Previous submission: https://patchwork.kernel.org/patch/10081731/
Most of the feedback was addressed by a separate series of cleanup
/ refactoring patches [1] which were applied.
The thing left to do is to split the original patch into moving out the
core bus infrastructure separate from the irqchip glue code, and
integrate the documentation with the kernel build system.
This patchset only handles moving the fsl-mc bus core out of staging.
The remaining objects (DPBP, DPCON) and drivers (dpio, dpaa2-eth) will
be moved out in subsequent patches.
[1] https://lkml.org/lkml/2018/1/16/386
Notes:
-v5:
- split irqchip glue code to separate patch (GregKH)
- integrate doc with the kernel build system
-v4:
- regenerated patch with renames detection disabled (Andrew Lunn)
-v3:
- rebased
-v2:
- group irqchip gic its glue code together with the rest (Marc Zyngier)
Bogdan Purcareata (2):
staging: fsl-mc: Move core bus out of staging
staging: fsl-mc: Move irqchip code out of staging
Documentation/networking/dpaa2/index.rst | 8 +
Documentation/networking/dpaa2/overview.rst | 404 +++++++++
Documentation/networking/index.rst | 1 +
MAINTAINERS | 3 +-
drivers/bus/Kconfig | 2 +
drivers/bus/Makefile | 4 +
drivers/bus/fsl-mc/Kconfig | 16 +
drivers/bus/fsl-mc/Makefile | 16 +
drivers/bus/fsl-mc/dpmcp.c | 99 +++
drivers/bus/fsl-mc/dprc-driver.c | 809 ++++++++++++++++++
drivers/bus/fsl-mc/dprc.c | 532 ++++++++++++
drivers/bus/fsl-mc/fsl-mc-allocator.c | 648 ++++++++++++++
drivers/bus/fsl-mc/fsl-mc-bus.c | 948 +++++++++++++++++++++
drivers/bus/fsl-mc/fsl-mc-msi.c | 285 +++++++
drivers/bus/fsl-mc/fsl-mc-private.h | 475 +++++++++++
drivers/bus/fsl-mc/mc-io.c | 268 ++++++
drivers/bus/fsl-mc/mc-sys.c | 296 +++++++
drivers/irqchip/Makefile | 1 +
drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c | 100 +++
drivers/staging/fsl-dpaa2/ethernet/README | 2 +-
drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c | 2 +-
drivers/staging/fsl-dpaa2/ethernet/dpni.c | 2 +-
drivers/staging/fsl-mc/TODO | 18 -
drivers/staging/fsl-mc/bus/Kconfig | 10 -
drivers/staging/fsl-mc/bus/Makefile | 15 +-
drivers/staging/fsl-mc/bus/dpbp.c | 2 +-
drivers/staging/fsl-mc/bus/dpcon.c | 2 +-
drivers/staging/fsl-mc/bus/dpio/dpio-driver.c | 2 +-
drivers/staging/fsl-mc/bus/dpio/dpio-service.c | 2 +-
drivers/staging/fsl-mc/bus/dpio/dpio.c | 2 +-
drivers/staging/fsl-mc/bus/dpmcp.c | 99 ---
drivers/staging/fsl-mc/bus/dprc-driver.c | 809 ------------------
drivers/staging/fsl-mc/bus/dprc.c | 531 ------------
drivers/staging/fsl-mc/bus/fsl-mc-allocator.c | 648 --------------
drivers/staging/fsl-mc/bus/fsl-mc-bus.c | 948 ---------------------
drivers/staging/fsl-mc/bus/fsl-mc-msi.c | 284 ------
drivers/staging/fsl-mc/bus/fsl-mc-private.h | 475 -----------
.../staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c | 100 ---
drivers/staging/fsl-mc/bus/mc-io.c | 268 ------
drivers/staging/fsl-mc/bus/mc-sys.c | 296 -------
drivers/staging/fsl-mc/include/mc.h | 454 ----------
drivers/staging/fsl-mc/overview.rst | 404 ---------
include/linux/fsl/mc.h | 454 ++++++++++
43 files changed, 5378 insertions(+), 5366 deletions(-)
create mode 100644 Documentation/networking/dpaa2/index.rst
create mode 100644 Documentation/networking/dpaa2/overview.rst
create mode 100644 drivers/bus/fsl-mc/Kconfig
create mode 100644 drivers/bus/fsl-mc/Makefile
create mode 100644 drivers/bus/fsl-mc/dpmcp.c
create mode 100644 drivers/bus/fsl-mc/dprc-driver.c
create mode 100644 drivers/bus/fsl-mc/dprc.c
create mode 100644 drivers/bus/fsl-mc/fsl-mc-allocator.c
create mode 100644 drivers/bus/fsl-mc/fsl-mc-bus.c
create mode 100644 drivers/bus/fsl-mc/fsl-mc-msi.c
create mode 100644 drivers/bus/fsl-mc/fsl-mc-private.h
create mode 100644 drivers/bus/fsl-mc/mc-io.c
create mode 100644 drivers/bus/fsl-mc/mc-sys.c
create mode 100644 drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c
delete mode 100644 drivers/staging/fsl-mc/TODO
delete mode 100644 drivers/staging/fsl-mc/bus/dpmcp.c
delete mode 100644 drivers/staging/fsl-mc/bus/dprc-driver.c
delete mode 100644 drivers/staging/fsl-mc/bus/dprc.c
delete mode 100644 drivers/staging/fsl-mc/bus/fsl-mc-allocator.c
delete mode 100644 drivers/staging/fsl-mc/bus/fsl-mc-bus.c
delete mode 100644 drivers/staging/fsl-mc/bus/fsl-mc-msi.c
delete mode 100644 drivers/staging/fsl-mc/bus/fsl-mc-private.h
delete mode 100644 drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c
delete mode 100644 drivers/staging/fsl-mc/bus/mc-io.c
delete mode 100644 drivers/staging/fsl-mc/bus/mc-sys.c
delete mode 100644 drivers/staging/fsl-mc/include/mc.h
delete mode 100644 drivers/staging/fsl-mc/overview.rst
create mode 100644 include/linux/fsl/mc.h
--
2.7.4
Move the source files out of staging into their final locations:
-mc.h include file in drivers/staging/fsl-mc/include go to include/linux/fsl
-source files in drivers/staging/fsl-mc/bus go to drivers/bus/fsl-mc
-overview.rst, providing an overview of DPAA2, goes to
Documentation/networking/dpaa2/overview.rst
Update or delete other remaining staging files -- Makefile, Kconfig, TODO.
Update dpaa2_eth and dpio staging drivers.
Add integration bits for the documentation build system.
Signed-off-by: Stuart Yoder <[email protected]>
[rebased, add dpaa2_eth and dpio #include updates]
Signed-off-by: Laurentiu Tudor <[email protected]>
[rebased, split irqchip to separate patch]
Signed-off-by: Bogdan Purcareata <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Jason Cooper <[email protected]>
Cc: Marc Zyngier <[email protected]>
---
Notes:
-v5:
- split irqchip glue code to separate patch (GregKH)
- integrate doc with the kernel build system
-v4:
- regenerated patch with renames detection disabled (Andrew Lunn)
-v3:
- rebased
-v2:
- group irqchip gic its glue code together with the rest (Marc Zyngier)
Documentation/networking/dpaa2/index.rst | 8 +
Documentation/networking/dpaa2/overview.rst | 404 +++++++++
Documentation/networking/index.rst | 1 +
MAINTAINERS | 3 +-
drivers/bus/Kconfig | 2 +
drivers/bus/Makefile | 4 +
drivers/bus/fsl-mc/Kconfig | 16 +
drivers/bus/fsl-mc/Makefile | 16 +
drivers/bus/fsl-mc/dpmcp.c | 99 +++
drivers/bus/fsl-mc/dprc-driver.c | 809 ++++++++++++++++++
drivers/bus/fsl-mc/dprc.c | 532 ++++++++++++
drivers/bus/fsl-mc/fsl-mc-allocator.c | 648 ++++++++++++++
drivers/bus/fsl-mc/fsl-mc-bus.c | 948 +++++++++++++++++++++
drivers/bus/fsl-mc/fsl-mc-msi.c | 285 +++++++
drivers/bus/fsl-mc/fsl-mc-private.h | 475 +++++++++++
drivers/bus/fsl-mc/mc-io.c | 268 ++++++
drivers/bus/fsl-mc/mc-sys.c | 296 +++++++
drivers/staging/fsl-dpaa2/ethernet/README | 2 +-
drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c | 2 +-
drivers/staging/fsl-dpaa2/ethernet/dpni.c | 2 +-
drivers/staging/fsl-mc/TODO | 18 -
drivers/staging/fsl-mc/bus/Kconfig | 10 -
drivers/staging/fsl-mc/bus/Makefile | 16 +-
drivers/staging/fsl-mc/bus/dpbp.c | 2 +-
drivers/staging/fsl-mc/bus/dpcon.c | 2 +-
drivers/staging/fsl-mc/bus/dpio/dpio-driver.c | 2 +-
drivers/staging/fsl-mc/bus/dpio/dpio-service.c | 2 +-
drivers/staging/fsl-mc/bus/dpio/dpio.c | 2 +-
drivers/staging/fsl-mc/bus/dpmcp.c | 99 ---
drivers/staging/fsl-mc/bus/dprc-driver.c | 809 ------------------
drivers/staging/fsl-mc/bus/dprc.c | 531 ------------
drivers/staging/fsl-mc/bus/fsl-mc-allocator.c | 648 --------------
drivers/staging/fsl-mc/bus/fsl-mc-bus.c | 948 ---------------------
drivers/staging/fsl-mc/bus/fsl-mc-msi.c | 284 ------
drivers/staging/fsl-mc/bus/fsl-mc-private.h | 475 -----------
.../staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c | 2 +-
drivers/staging/fsl-mc/bus/mc-io.c | 268 ------
drivers/staging/fsl-mc/bus/mc-sys.c | 296 -------
drivers/staging/fsl-mc/include/mc.h | 454 ----------
drivers/staging/fsl-mc/overview.rst | 404 ---------
include/linux/fsl/mc.h | 454 ++++++++++
41 files changed, 5279 insertions(+), 5267 deletions(-)
create mode 100644 Documentation/networking/dpaa2/index.rst
create mode 100644 Documentation/networking/dpaa2/overview.rst
create mode 100644 drivers/bus/fsl-mc/Kconfig
create mode 100644 drivers/bus/fsl-mc/Makefile
create mode 100644 drivers/bus/fsl-mc/dpmcp.c
create mode 100644 drivers/bus/fsl-mc/dprc-driver.c
create mode 100644 drivers/bus/fsl-mc/dprc.c
create mode 100644 drivers/bus/fsl-mc/fsl-mc-allocator.c
create mode 100644 drivers/bus/fsl-mc/fsl-mc-bus.c
create mode 100644 drivers/bus/fsl-mc/fsl-mc-msi.c
create mode 100644 drivers/bus/fsl-mc/fsl-mc-private.h
create mode 100644 drivers/bus/fsl-mc/mc-io.c
create mode 100644 drivers/bus/fsl-mc/mc-sys.c
delete mode 100644 drivers/staging/fsl-mc/TODO
delete mode 100644 drivers/staging/fsl-mc/bus/dpmcp.c
delete mode 100644 drivers/staging/fsl-mc/bus/dprc-driver.c
delete mode 100644 drivers/staging/fsl-mc/bus/dprc.c
delete mode 100644 drivers/staging/fsl-mc/bus/fsl-mc-allocator.c
delete mode 100644 drivers/staging/fsl-mc/bus/fsl-mc-bus.c
delete mode 100644 drivers/staging/fsl-mc/bus/fsl-mc-msi.c
delete mode 100644 drivers/staging/fsl-mc/bus/fsl-mc-private.h
delete mode 100644 drivers/staging/fsl-mc/bus/mc-io.c
delete mode 100644 drivers/staging/fsl-mc/bus/mc-sys.c
delete mode 100644 drivers/staging/fsl-mc/include/mc.h
delete mode 100644 drivers/staging/fsl-mc/overview.rst
create mode 100644 include/linux/fsl/mc.h
diff --git a/Documentation/networking/dpaa2/index.rst b/Documentation/networking/dpaa2/index.rst
new file mode 100644
index 0000000..4c6586c
--- /dev/null
+++ b/Documentation/networking/dpaa2/index.rst
@@ -0,0 +1,8 @@
+===================
+DPAA2 Documentation
+===================
+
+.. toctree::
+ :maxdepth: 1
+
+ overview
diff --git a/Documentation/networking/dpaa2/overview.rst b/Documentation/networking/dpaa2/overview.rst
new file mode 100644
index 0000000..79fede4
--- /dev/null
+++ b/Documentation/networking/dpaa2/overview.rst
@@ -0,0 +1,404 @@
+.. include:: <isonum.txt>
+
+DPAA2 (Data Path Acceleration Architecture Gen2) Overview
+=========================================================
+
+:Copyright: |copy| 2015 Freescale Semiconductor Inc.
+:Copyright: |copy| 2018 NXP
+
+This document provides an overview of the Freescale DPAA2 architecture
+and how it is integrated into the Linux kernel.
+
+Introduction
+============
+
+DPAA2 is a hardware architecture designed for high-speeed network
+packet processing. DPAA2 consists of sophisticated mechanisms for
+processing Ethernet packets, queue management, buffer management,
+autonomous L2 switching, virtual Ethernet bridging, and accelerator
+(e.g. crypto) sharing.
+
+A DPAA2 hardware component called the Management Complex (or MC) manages the
+DPAA2 hardware resources. The MC provides an object-based abstraction for
+software drivers to use the DPAA2 hardware.
+The MC uses DPAA2 hardware resources such as queues, buffer pools, and
+network ports to create functional objects/devices such as network
+interfaces, an L2 switch, or accelerator instances.
+The MC provides memory-mapped I/O command interfaces (MC portals)
+which DPAA2 software drivers use to operate on DPAA2 objects.
+
+The diagram below shows an overview of the DPAA2 resource management
+architecture::
+
+ +--------------------------------------+
+ | OS |
+ | DPAA2 drivers |
+ | | |
+ +-----------------------------|--------+
+ |
+ | (create,discover,connect
+ | config,use,destroy)
+ |
+ DPAA2 |
+ +------------------------| mc portal |-+
+ | | |
+ | +- - - - - - - - - - - - -V- - -+ |
+ | | | |
+ | | Management Complex (MC) | |
+ | | | |
+ | +- - - - - - - - - - - - - - - -+ |
+ | |
+ | Hardware Hardware |
+ | Resources Objects |
+ | --------- ------- |
+ | -queues -DPRC |
+ | -buffer pools -DPMCP |
+ | -Eth MACs/ports -DPIO |
+ | -network interface -DPNI |
+ | profiles -DPMAC |
+ | -queue portals -DPBP |
+ | -MC portals ... |
+ | ... |
+ | |
+ +--------------------------------------+
+
+
+The MC mediates operations such as create, discover,
+connect, configuration, and destroy. Fast-path operations
+on data, such as packet transmit/receive, are not mediated by
+the MC and are done directly using memory mapped regions in
+DPIO objects.
+
+Overview of DPAA2 Objects
+=========================
+
+The section provides a brief overview of some key DPAA2 objects.
+A simple scenario is described illustrating the objects involved
+in creating a network interfaces.
+
+DPRC (Datapath Resource Container)
+----------------------------------
+
+A DPRC is a container object that holds all the other
+types of DPAA2 objects. In the example diagram below there
+are 8 objects of 5 types (DPMCP, DPIO, DPBP, DPNI, and DPMAC)
+in the container.
+
+::
+
+ +---------------------------------------------------------+
+ | DPRC |
+ | |
+ | +-------+ +-------+ +-------+ +-------+ +-------+ |
+ | | DPMCP | | DPIO | | DPBP | | DPNI | | DPMAC | |
+ | +-------+ +-------+ +-------+ +---+---+ +---+---+ |
+ | | DPMCP | | DPIO | |
+ | +-------+ +-------+ |
+ | | DPMCP | |
+ | +-------+ |
+ | |
+ +---------------------------------------------------------+
+
+From the point of view of an OS, a DPRC behaves similar to a plug and
+play bus, like PCI. DPRC commands can be used to enumerate the contents
+of the DPRC, discover the hardware objects present (including mappable
+regions and interrupts).
+
+::
+
+ DPRC.1 (bus)
+ |
+ +--+--------+-------+-------+-------+
+ | | | | |
+ DPMCP.1 DPIO.1 DPBP.1 DPNI.1 DPMAC.1
+ DPMCP.2 DPIO.2
+ DPMCP.3
+
+Hardware objects can be created and destroyed dynamically, providing
+the ability to hot plug/unplug objects in and out of the DPRC.
+
+A DPRC has a mappable MMIO region (an MC portal) that can be used
+to send MC commands. It has an interrupt for status events (like
+hotplug).
+All objects in a container share the same hardware "isolation context".
+This means that with respect to an IOMMU the isolation granularity
+is at the DPRC (container) level, not at the individual object
+level.
+
+DPRCs can be defined statically and populated with objects
+via a config file passed to the MC when firmware starts it.
+
+DPAA2 Objects for an Ethernet Network Interface
+-----------------------------------------------
+
+A typical Ethernet NIC is monolithic-- the NIC device contains TX/RX
+queuing mechanisms, configuration mechanisms, buffer management,
+physical ports, and interrupts. DPAA2 uses a more granular approach
+utilizing multiple hardware objects. Each object provides specialized
+functions. Groups of these objects are used by software to provide
+Ethernet network interface functionality. This approach provides
+efficient use of finite hardware resources, flexibility, and
+performance advantages.
+
+The diagram below shows the objects needed for a simple
+network interface configuration on a system with 2 CPUs.
+
+::
+
+ +---+---+ +---+---+
+ CPU0 CPU1
+ +---+---+ +---+---+
+ | |
+ +---+---+ +---+---+
+ DPIO DPIO
+ +---+---+ +---+---+
+ \ /
+ \ /
+ \ /
+ +---+---+
+ DPNI --- DPBP,DPMCP
+ +---+---+
+ |
+ |
+ +---+---+
+ DPMAC
+ +---+---+
+ |
+ port/PHY
+
+Below the objects are described. For each object a brief description
+is provided along with a summary of the kinds of operations the object
+supports and a summary of key resources of the object (MMIO regions
+and IRQs).
+
+DPMAC (Datapath Ethernet MAC)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Represents an Ethernet MAC, a hardware device that connects to an Ethernet
+PHY and allows physical transmission and reception of Ethernet frames.
+
+- MMIO regions: none
+- IRQs: DPNI link change
+- commands: set link up/down, link config, get stats,
+ IRQ config, enable, reset
+
+DPNI (Datapath Network Interface)
+Contains TX/RX queues, network interface configuration, and RX buffer pool
+configuration mechanisms. The TX/RX queues are in memory and are identified
+by queue number.
+
+- MMIO regions: none
+- IRQs: link state
+- commands: port config, offload config, queue config,
+ parse/classify config, IRQ config, enable, reset
+
+DPIO (Datapath I/O)
+~~~~~~~~~~~~~~~~~~~
+Provides interfaces to enqueue and dequeue
+packets and do hardware buffer pool management operations. The DPAA2
+architecture separates the mechanism to access queues (the DPIO object)
+from the queues themselves. The DPIO provides an MMIO interface to
+enqueue/dequeue packets. To enqueue something a descriptor is written
+to the DPIO MMIO region, which includes the target queue number.
+There will typically be one DPIO assigned to each CPU. This allows all
+CPUs to simultaneously perform enqueue/dequeued operations. DPIOs are
+expected to be shared by different DPAA2 drivers.
+
+- MMIO regions: queue operations, buffer management
+- IRQs: data availability, congestion notification, buffer
+ pool depletion
+- commands: IRQ config, enable, reset
+
+DPBP (Datapath Buffer Pool)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Represents a hardware buffer pool.
+
+- MMIO regions: none
+- IRQs: none
+- commands: enable, reset
+
+DPMCP (Datapath MC Portal)
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+Provides an MC command portal.
+Used by drivers to send commands to the MC to manage
+objects.
+
+- MMIO regions: MC command portal
+- IRQs: command completion
+- commands: IRQ config, enable, reset
+
+Object Connections
+==================
+Some objects have explicit relationships that must
+be configured:
+
+- DPNI <--> DPMAC
+- DPNI <--> DPNI
+- DPNI <--> L2-switch-port
+
+ A DPNI must be connected to something such as a DPMAC,
+ another DPNI, or L2 switch port. The DPNI connection
+ is made via a DPRC command.
+
+::
+
+ +-------+ +-------+
+ | DPNI | | DPMAC |
+ +---+---+ +---+---+
+ | |
+ +==========+
+
+- DPNI <--> DPBP
+
+ A network interface requires a 'buffer pool' (DPBP
+ object) which provides a list of pointers to memory
+ where received Ethernet data is to be copied. The
+ Ethernet driver configures the DPBPs associated with
+ the network interface.
+
+Interrupts
+==========
+All interrupts generated by DPAA2 objects are message
+interrupts. At the hardware level message interrupts
+generated by devices will normally have 3 components--
+1) a non-spoofable 'device-id' expressed on the hardware
+bus, 2) an address, 3) a data value.
+
+In the case of DPAA2 devices/objects, all objects in the
+same container/DPRC share the same 'device-id'.
+For ARM-based SoC this is the same as the stream ID.
+
+
+DPAA2 Linux Drivers Overview
+============================
+
+This section provides an overview of the Linux kernel drivers for
+DPAA2-- 1) the bus driver and associated "DPAA2 infrastructure"
+drivers and 2) functional object drivers (such as Ethernet).
+
+As described previously, a DPRC is a container that holds the other
+types of DPAA2 objects. It is functionally similar to a plug-and-play
+bus controller.
+Each object in the DPRC is a Linux "device" and is bound to a driver.
+The diagram below shows the Linux drivers involved in a networking
+scenario and the objects bound to each driver. A brief description
+of each driver follows.
+
+::
+
+ +------------+
+ | OS Network |
+ | Stack |
+ +------------+ +------------+
+ | Allocator |. . . . . . . | Ethernet |
+ |(DPMCP,DPBP)| | (DPNI) |
+ +-.----------+ +---+---+----+
+ . . ^ |
+ . . <data avail, | | <enqueue,
+ . . tx confirm> | | dequeue>
+ +-------------+ . | |
+ | DPRC driver | . +---+---V----+ +---------+
+ | (DPRC) | . . . . . .| DPIO driver| | MAC |
+ +----------+--+ | (DPIO) | | (DPMAC) |
+ | +------+-----+ +-----+---+
+ |<dev add/remove> | |
+ | | |
+ +--------+----------+ | +--+---+
+ | MC-bus driver | | | PHY |
+ | | | |driver|
+ | /bus/fsl-mc | | +--+---+
+ +-------------------+ | |
+ | |
+ ========================= HARDWARE =========|=================|======
+ DPIO |
+ | |
+ DPNI---DPBP |
+ | |
+ DPMAC |
+ | |
+ PHY ---------------+
+ ============================================|========================
+
+A brief description of each driver is provided below.
+
+MC-bus driver
+-------------
+The MC-bus driver is a platform driver and is probed from a
+node in the device tree (compatible "fsl,qoriq-mc") passed in by boot
+firmware. It is responsible for bootstrapping the DPAA2 kernel
+infrastructure.
+Key functions include:
+
+- registering a new bus type named "fsl-mc" with the kernel,
+ and implementing bus call-backs (e.g. match/uevent/dev_groups)
+- implementing APIs for DPAA2 driver registration and for device
+ add/remove
+- creates an MSI IRQ domain
+- doing a 'device add' to expose the 'root' DPRC, in turn triggering
+ a bind of the root DPRC to the DPRC driver
+
+The binding for the MC-bus device-tree node can be consulted at
+*Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt*.
+The sysfs bind/unbind interfaces for the MC-bus can be consulted at
+*Documentation/ABI/testing/sysfs-bus-fsl-mc*.
+
+DPRC driver
+-----------
+The DPRC driver is bound to DPRC objects and does runtime management
+of a bus instance. It performs the initial bus scan of the DPRC
+and handles interrupts for container events such as hot plug by
+re-scanning the DPRC.
+
+Allocator
+---------
+Certain objects such as DPMCP and DPBP are generic and fungible,
+and are intended to be used by other drivers. For example,
+the DPAA2 Ethernet driver needs:
+
+- DPMCPs to send MC commands, to configure network interfaces
+- DPBPs for network buffer pools
+
+The allocator driver registers for these allocatable object types
+and those objects are bound to the allocator when the bus is probed.
+The allocator maintains a pool of objects that are available for
+allocation by other DPAA2 drivers.
+
+DPIO driver
+-----------
+The DPIO driver is bound to DPIO objects and provides services that allow
+other drivers such as the Ethernet driver to enqueue and dequeue data for
+their respective objects.
+Key services include:
+
+- data availability notifications
+- hardware queuing operations (enqueue and dequeue of data)
+- hardware buffer pool management
+
+To transmit a packet the Ethernet driver puts data on a queue and
+invokes a DPIO API. For receive, the Ethernet driver registers
+a data availability notification callback. To dequeue a packet
+a DPIO API is used.
+There is typically one DPIO object per physical CPU for optimum
+performance, allowing different CPUs to simultaneously enqueue
+and dequeue data.
+
+The DPIO driver operates on behalf of all DPAA2 drivers
+active in the kernel-- Ethernet, crypto, compression,
+etc.
+
+Ethernet driver
+---------------
+The Ethernet driver is bound to a DPNI and implements the kernel
+interfaces needed to connect the DPAA2 network interface to
+the network stack.
+Each DPNI corresponds to a Linux network interface.
+
+MAC driver
+----------
+An Ethernet PHY is an off-chip, board specific component and is managed
+by the appropriate PHY driver via an mdio bus. The MAC driver
+plays a role of being a proxy between the PHY driver and the
+MC. It does this proxy via the MC commands to a DPMAC object.
+If the PHY driver signals a link change, the MAC driver notifies
+the MC via a DPMAC command. If a network interface is brought
+up or down, the MC notifies the DPMAC driver via an interrupt and
+the driver can take appropriate action.
diff --git a/Documentation/networking/index.rst b/Documentation/networking/index.rst
index 66e6208..233b4ff 100644
--- a/Documentation/networking/index.rst
+++ b/Documentation/networking/index.rst
@@ -7,6 +7,7 @@ Contents:
:maxdepth: 2
batman-adv
+ dpaa2/index
kapi
z8530book
diff --git a/MAINTAINERS b/MAINTAINERS
index 2722afd..35f7517 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -11280,8 +11280,9 @@ M: Stuart Yoder <[email protected]>
M: Laurentiu Tudor <[email protected]>
L: [email protected]
S: Maintained
-F: drivers/staging/fsl-mc/
+F: drivers/bus/fsl-mc/
F: Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt
+F: Documentation/networking/dpaa2/overview.rst
QT1010 MEDIA DRIVER
M: Antti Palosaari <[email protected]>
diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig
index dc7b3c7..7773150 100644
--- a/drivers/bus/Kconfig
+++ b/drivers/bus/Kconfig
@@ -199,4 +199,6 @@ config DA8XX_MSTPRI
configuration. Allows to adjust the priorities of all master
peripherals.
+source "drivers/bus/fsl-mc/Kconfig"
+
endmenu
diff --git a/drivers/bus/Makefile b/drivers/bus/Makefile
index 9bcd0bf..b666c49 100644
--- a/drivers/bus/Makefile
+++ b/drivers/bus/Makefile
@@ -8,6 +8,10 @@ obj-$(CONFIG_ARM_CCI) += arm-cci.o
obj-$(CONFIG_ARM_CCN) += arm-ccn.o
obj-$(CONFIG_BRCMSTB_GISB_ARB) += brcmstb_gisb.o
+
+# DPAA2 fsl-mc bus
+obj-$(CONFIG_FSL_MC_BUS) += fsl-mc/
+
obj-$(CONFIG_IMX_WEIM) += imx-weim.o
obj-$(CONFIG_MIPS_CDMM) += mips_cdmm.o
obj-$(CONFIG_MVEBU_MBUS) += mvebu-mbus.o
diff --git a/drivers/bus/fsl-mc/Kconfig b/drivers/bus/fsl-mc/Kconfig
new file mode 100644
index 0000000..bcca644
--- /dev/null
+++ b/drivers/bus/fsl-mc/Kconfig
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# DPAA2 fsl-mc bus
+#
+# Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
+#
+
+config FSL_MC_BUS
+ bool "QorIQ DPAA2 fsl-mc bus driver"
+ depends on OF && (ARCH_LAYERSCAPE || (COMPILE_TEST && (ARM || ARM64 || X86 || PPC)))
+ select GENERIC_MSI_IRQ_DOMAIN
+ help
+ Driver to enable the bus infrastructure for the QorIQ DPAA2
+ architecture. The fsl-mc bus driver handles discovery of
+ DPAA2 objects (which are represented as Linux devices) and
+ binding objects to drivers.
diff --git a/drivers/bus/fsl-mc/Makefile b/drivers/bus/fsl-mc/Makefile
new file mode 100644
index 0000000..6a97f2c
--- /dev/null
+++ b/drivers/bus/fsl-mc/Makefile
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Freescale Management Complex (MC) bus drivers
+#
+# Copyright (C) 2014 Freescale Semiconductor, Inc.
+#
+obj-$(CONFIG_FSL_MC_BUS) += mc-bus-driver.o
+
+mc-bus-driver-objs := fsl-mc-bus.o \
+ mc-sys.o \
+ mc-io.o \
+ dprc.o \
+ dprc-driver.o \
+ fsl-mc-allocator.o \
+ fsl-mc-msi.o \
+ dpmcp.o
diff --git a/drivers/bus/fsl-mc/dpmcp.c b/drivers/bus/fsl-mc/dpmcp.c
new file mode 100644
index 0000000..8d997b0
--- /dev/null
+++ b/drivers/bus/fsl-mc/dpmcp.c
@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/fsl/mc.h>
+
+#include "fsl-mc-private.h"
+
+/**
+ * dpmcp_open() - Open a control session for the specified object.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @dpmcp_id: DPMCP unique ID
+ * @token: Returned token; use in subsequent API calls
+ *
+ * This function can be used to open a control session for an
+ * already created object; an object may have been declared in
+ * the DPL or by calling the dpmcp_create function.
+ * This function returns a unique authentication token,
+ * associated with the specific object ID and the specific MC
+ * portal; this token must be used in all subsequent commands for
+ * this specific object
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpmcp_open(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ int dpmcp_id,
+ u16 *token)
+{
+ struct mc_command cmd = { 0 };
+ struct dpmcp_cmd_open *cmd_params;
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_OPEN,
+ cmd_flags, 0);
+ cmd_params = (struct dpmcp_cmd_open *)cmd.params;
+ cmd_params->dpmcp_id = cpu_to_le32(dpmcp_id);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *token = mc_cmd_hdr_read_token(&cmd);
+
+ return err;
+}
+
+/**
+ * dpmcp_close() - Close the control session of the object
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPMCP object
+ *
+ * After this function is called, no further operations are
+ * allowed on the object without opening a new control session.
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpmcp_close(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_CLOSE,
+ cmd_flags, token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dpmcp_reset() - Reset the DPMCP, returns the object to initial state.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPMCP object
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpmcp_reset(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMCP_CMDID_RESET,
+ cmd_flags, token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
diff --git a/drivers/bus/fsl-mc/dprc-driver.c b/drivers/bus/fsl-mc/dprc-driver.c
new file mode 100644
index 0000000..52c7e15
--- /dev/null
+++ b/drivers/bus/fsl-mc/dprc-driver.c
@@ -0,0 +1,809 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Freescale data path resource container (DPRC) driver
+ *
+ * Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
+ * Author: German Rivera <[email protected]>
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/msi.h>
+#include <linux/fsl/mc.h>
+
+#include "fsl-mc-private.h"
+
+#define FSL_MC_DPRC_DRIVER_NAME "fsl_mc_dprc"
+
+struct fsl_mc_child_objs {
+ int child_count;
+ struct fsl_mc_obj_desc *child_array;
+};
+
+static bool fsl_mc_device_match(struct fsl_mc_device *mc_dev,
+ struct fsl_mc_obj_desc *obj_desc)
+{
+ return mc_dev->obj_desc.id == obj_desc->id &&
+ strcmp(mc_dev->obj_desc.type, obj_desc->type) == 0;
+
+}
+
+static int __fsl_mc_device_remove_if_not_in_mc(struct device *dev, void *data)
+{
+ int i;
+ struct fsl_mc_child_objs *objs;
+ struct fsl_mc_device *mc_dev;
+
+ mc_dev = to_fsl_mc_device(dev);
+ objs = data;
+
+ for (i = 0; i < objs->child_count; i++) {
+ struct fsl_mc_obj_desc *obj_desc = &objs->child_array[i];
+
+ if (strlen(obj_desc->type) != 0 &&
+ fsl_mc_device_match(mc_dev, obj_desc))
+ break;
+ }
+
+ if (i == objs->child_count)
+ fsl_mc_device_remove(mc_dev);
+
+ return 0;
+}
+
+static int __fsl_mc_device_remove(struct device *dev, void *data)
+{
+ fsl_mc_device_remove(to_fsl_mc_device(dev));
+ return 0;
+}
+
+/**
+ * dprc_remove_devices - Removes devices for objects removed from a DPRC
+ *
+ * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
+ * @obj_desc_array: array of object descriptors for child objects currently
+ * present in the DPRC in the MC.
+ * @num_child_objects_in_mc: number of entries in obj_desc_array
+ *
+ * Synchronizes the state of the Linux bus driver with the actual state of
+ * the MC by removing devices that represent MC objects that have
+ * been dynamically removed in the physical DPRC.
+ */
+static void dprc_remove_devices(struct fsl_mc_device *mc_bus_dev,
+ struct fsl_mc_obj_desc *obj_desc_array,
+ int num_child_objects_in_mc)
+{
+ if (num_child_objects_in_mc != 0) {
+ /*
+ * Remove child objects that are in the DPRC in Linux,
+ * but not in the MC:
+ */
+ struct fsl_mc_child_objs objs;
+
+ objs.child_count = num_child_objects_in_mc;
+ objs.child_array = obj_desc_array;
+ device_for_each_child(&mc_bus_dev->dev, &objs,
+ __fsl_mc_device_remove_if_not_in_mc);
+ } else {
+ /*
+ * There are no child objects for this DPRC in the MC.
+ * So, remove all the child devices from Linux:
+ */
+ device_for_each_child(&mc_bus_dev->dev, NULL,
+ __fsl_mc_device_remove);
+ }
+}
+
+static int __fsl_mc_device_match(struct device *dev, void *data)
+{
+ struct fsl_mc_obj_desc *obj_desc = data;
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+
+ return fsl_mc_device_match(mc_dev, obj_desc);
+}
+
+static struct fsl_mc_device *fsl_mc_device_lookup(struct fsl_mc_obj_desc
+ *obj_desc,
+ struct fsl_mc_device
+ *mc_bus_dev)
+{
+ struct device *dev;
+
+ dev = device_find_child(&mc_bus_dev->dev, obj_desc,
+ __fsl_mc_device_match);
+
+ return dev ? to_fsl_mc_device(dev) : NULL;
+}
+
+/**
+ * check_plugged_state_change - Check change in an MC object's plugged state
+ *
+ * @mc_dev: pointer to the fsl-mc device for a given MC object
+ * @obj_desc: pointer to the MC object's descriptor in the MC
+ *
+ * If the plugged state has changed from unplugged to plugged, the fsl-mc
+ * device is bound to the corresponding device driver.
+ * If the plugged state has changed from plugged to unplugged, the fsl-mc
+ * device is unbound from the corresponding device driver.
+ */
+static void check_plugged_state_change(struct fsl_mc_device *mc_dev,
+ struct fsl_mc_obj_desc *obj_desc)
+{
+ int error;
+ u32 plugged_flag_at_mc =
+ obj_desc->state & FSL_MC_OBJ_STATE_PLUGGED;
+
+ if (plugged_flag_at_mc !=
+ (mc_dev->obj_desc.state & FSL_MC_OBJ_STATE_PLUGGED)) {
+ if (plugged_flag_at_mc) {
+ mc_dev->obj_desc.state |= FSL_MC_OBJ_STATE_PLUGGED;
+ error = device_attach(&mc_dev->dev);
+ if (error < 0) {
+ dev_err(&mc_dev->dev,
+ "device_attach() failed: %d\n",
+ error);
+ }
+ } else {
+ mc_dev->obj_desc.state &= ~FSL_MC_OBJ_STATE_PLUGGED;
+ device_release_driver(&mc_dev->dev);
+ }
+ }
+}
+
+/**
+ * dprc_add_new_devices - Adds devices to the logical bus for a DPRC
+ *
+ * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
+ * @obj_desc_array: array of device descriptors for child devices currently
+ * present in the physical DPRC.
+ * @num_child_objects_in_mc: number of entries in obj_desc_array
+ *
+ * Synchronizes the state of the Linux bus driver with the actual
+ * state of the MC by adding objects that have been newly discovered
+ * in the physical DPRC.
+ */
+static void dprc_add_new_devices(struct fsl_mc_device *mc_bus_dev,
+ struct fsl_mc_obj_desc *obj_desc_array,
+ int num_child_objects_in_mc)
+{
+ int error;
+ int i;
+
+ for (i = 0; i < num_child_objects_in_mc; i++) {
+ struct fsl_mc_device *child_dev;
+ struct fsl_mc_obj_desc *obj_desc = &obj_desc_array[i];
+
+ if (strlen(obj_desc->type) == 0)
+ continue;
+
+ /*
+ * Check if device is already known to Linux:
+ */
+ child_dev = fsl_mc_device_lookup(obj_desc, mc_bus_dev);
+ if (child_dev) {
+ check_plugged_state_change(child_dev, obj_desc);
+ put_device(&child_dev->dev);
+ continue;
+ }
+
+ error = fsl_mc_device_add(obj_desc, NULL, &mc_bus_dev->dev,
+ &child_dev);
+ if (error < 0)
+ continue;
+ }
+}
+
+/**
+ * dprc_scan_objects - Discover objects in a DPRC
+ *
+ * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
+ * @total_irq_count: If argument is provided the function populates the
+ * total number of IRQs created by objects in the DPRC.
+ *
+ * Detects objects added and removed from a DPRC and synchronizes the
+ * state of the Linux bus driver, MC by adding and removing
+ * devices accordingly.
+ * Two types of devices can be found in a DPRC: allocatable objects (e.g.,
+ * dpbp, dpmcp) and non-allocatable devices (e.g., dprc, dpni).
+ * All allocatable devices needed to be probed before all non-allocatable
+ * devices, to ensure that device drivers for non-allocatable
+ * devices can allocate any type of allocatable devices.
+ * That is, we need to ensure that the corresponding resource pools are
+ * populated before they can get allocation requests from probe callbacks
+ * of the device drivers for the non-allocatable devices.
+ */
+static int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev,
+ unsigned int *total_irq_count)
+{
+ int num_child_objects;
+ int dprc_get_obj_failures;
+ int error;
+ unsigned int irq_count = mc_bus_dev->obj_desc.irq_count;
+ struct fsl_mc_obj_desc *child_obj_desc_array = NULL;
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
+
+ error = dprc_get_obj_count(mc_bus_dev->mc_io,
+ 0,
+ mc_bus_dev->mc_handle,
+ &num_child_objects);
+ if (error < 0) {
+ dev_err(&mc_bus_dev->dev, "dprc_get_obj_count() failed: %d\n",
+ error);
+ return error;
+ }
+
+ if (num_child_objects != 0) {
+ int i;
+
+ child_obj_desc_array =
+ devm_kmalloc_array(&mc_bus_dev->dev, num_child_objects,
+ sizeof(*child_obj_desc_array),
+ GFP_KERNEL);
+ if (!child_obj_desc_array)
+ return -ENOMEM;
+
+ /*
+ * Discover objects currently present in the physical DPRC:
+ */
+ dprc_get_obj_failures = 0;
+ for (i = 0; i < num_child_objects; i++) {
+ struct fsl_mc_obj_desc *obj_desc =
+ &child_obj_desc_array[i];
+
+ error = dprc_get_obj(mc_bus_dev->mc_io,
+ 0,
+ mc_bus_dev->mc_handle,
+ i, obj_desc);
+ if (error < 0) {
+ dev_err(&mc_bus_dev->dev,
+ "dprc_get_obj(i=%d) failed: %d\n",
+ i, error);
+ /*
+ * Mark the obj entry as "invalid", by using the
+ * empty string as obj type:
+ */
+ obj_desc->type[0] = '\0';
+ obj_desc->id = error;
+ dprc_get_obj_failures++;
+ continue;
+ }
+
+ /*
+ * add a quirk for all versions of dpsec < 4.0...none
+ * are coherent regardless of what the MC reports.
+ */
+ if ((strcmp(obj_desc->type, "dpseci") == 0) &&
+ (obj_desc->ver_major < 4))
+ obj_desc->flags |=
+ FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY;
+
+ irq_count += obj_desc->irq_count;
+ dev_dbg(&mc_bus_dev->dev,
+ "Discovered object: type %s, id %d\n",
+ obj_desc->type, obj_desc->id);
+ }
+
+ if (dprc_get_obj_failures != 0) {
+ dev_err(&mc_bus_dev->dev,
+ "%d out of %d devices could not be retrieved\n",
+ dprc_get_obj_failures, num_child_objects);
+ }
+ }
+
+ /*
+ * Allocate IRQ's before binding the scanned devices with their
+ * respective drivers.
+ */
+ if (dev_get_msi_domain(&mc_bus_dev->dev) && !mc_bus->irq_resources) {
+ if (irq_count > FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS) {
+ dev_warn(&mc_bus_dev->dev,
+ "IRQs needed (%u) exceed IRQs preallocated (%u)\n",
+ irq_count, FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS);
+ }
+
+ error = fsl_mc_populate_irq_pool(mc_bus,
+ FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS);
+ if (error < 0)
+ return error;
+ }
+
+ if (total_irq_count)
+ *total_irq_count = irq_count;
+
+ dprc_remove_devices(mc_bus_dev, child_obj_desc_array,
+ num_child_objects);
+
+ dprc_add_new_devices(mc_bus_dev, child_obj_desc_array,
+ num_child_objects);
+
+ if (child_obj_desc_array)
+ devm_kfree(&mc_bus_dev->dev, child_obj_desc_array);
+
+ return 0;
+}
+
+/**
+ * dprc_scan_container - Scans a physical DPRC and synchronizes Linux bus state
+ *
+ * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
+ *
+ * Scans the physical DPRC and synchronizes the state of the Linux
+ * bus driver with the actual state of the MC by adding and removing
+ * devices as appropriate.
+ */
+static int dprc_scan_container(struct fsl_mc_device *mc_bus_dev)
+{
+ int error;
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
+
+ fsl_mc_init_all_resource_pools(mc_bus_dev);
+
+ /*
+ * Discover objects in the DPRC:
+ */
+ mutex_lock(&mc_bus->scan_mutex);
+ error = dprc_scan_objects(mc_bus_dev, NULL);
+ mutex_unlock(&mc_bus->scan_mutex);
+ if (error < 0) {
+ fsl_mc_cleanup_all_resource_pools(mc_bus_dev);
+ return error;
+ }
+
+ return 0;
+}
+
+/**
+ * dprc_irq0_handler - Regular ISR for DPRC interrupt 0
+ *
+ * @irq: IRQ number of the interrupt being handled
+ * @arg: Pointer to device structure
+ */
+static irqreturn_t dprc_irq0_handler(int irq_num, void *arg)
+{
+ return IRQ_WAKE_THREAD;
+}
+
+/**
+ * dprc_irq0_handler_thread - Handler thread function for DPRC interrupt 0
+ *
+ * @irq: IRQ number of the interrupt being handled
+ * @arg: Pointer to device structure
+ */
+static irqreturn_t dprc_irq0_handler_thread(int irq_num, void *arg)
+{
+ int error;
+ u32 status;
+ struct device *dev = arg;
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
+ struct fsl_mc_io *mc_io = mc_dev->mc_io;
+ struct msi_desc *msi_desc = mc_dev->irqs[0]->msi_desc;
+
+ dev_dbg(dev, "DPRC IRQ %d triggered on CPU %u\n",
+ irq_num, smp_processor_id());
+
+ if (!(mc_dev->flags & FSL_MC_IS_DPRC))
+ return IRQ_HANDLED;
+
+ mutex_lock(&mc_bus->scan_mutex);
+ if (!msi_desc || msi_desc->irq != (u32)irq_num)
+ goto out;
+
+ status = 0;
+ error = dprc_get_irq_status(mc_io, 0, mc_dev->mc_handle, 0,
+ &status);
+ if (error < 0) {
+ dev_err(dev,
+ "dprc_get_irq_status() failed: %d\n", error);
+ goto out;
+ }
+
+ error = dprc_clear_irq_status(mc_io, 0, mc_dev->mc_handle, 0,
+ status);
+ if (error < 0) {
+ dev_err(dev,
+ "dprc_clear_irq_status() failed: %d\n", error);
+ goto out;
+ }
+
+ if (status & (DPRC_IRQ_EVENT_OBJ_ADDED |
+ DPRC_IRQ_EVENT_OBJ_REMOVED |
+ DPRC_IRQ_EVENT_CONTAINER_DESTROYED |
+ DPRC_IRQ_EVENT_OBJ_DESTROYED |
+ DPRC_IRQ_EVENT_OBJ_CREATED)) {
+ unsigned int irq_count;
+
+ error = dprc_scan_objects(mc_dev, &irq_count);
+ if (error < 0) {
+ /*
+ * If the error is -ENXIO, we ignore it, as it indicates
+ * that the object scan was aborted, as we detected that
+ * an object was removed from the DPRC in the MC, while
+ * we were scanning the DPRC.
+ */
+ if (error != -ENXIO) {
+ dev_err(dev, "dprc_scan_objects() failed: %d\n",
+ error);
+ }
+
+ goto out;
+ }
+
+ if (irq_count > FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS) {
+ dev_warn(dev,
+ "IRQs needed (%u) exceed IRQs preallocated (%u)\n",
+ irq_count, FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS);
+ }
+ }
+
+out:
+ mutex_unlock(&mc_bus->scan_mutex);
+ return IRQ_HANDLED;
+}
+
+/*
+ * Disable and clear interrupt for a given DPRC object
+ */
+static int disable_dprc_irq(struct fsl_mc_device *mc_dev)
+{
+ int error;
+ struct fsl_mc_io *mc_io = mc_dev->mc_io;
+
+ /*
+ * Disable generation of interrupt, while we configure it:
+ */
+ error = dprc_set_irq_enable(mc_io, 0, mc_dev->mc_handle, 0, 0);
+ if (error < 0) {
+ dev_err(&mc_dev->dev,
+ "Disabling DPRC IRQ failed: dprc_set_irq_enable() failed: %d\n",
+ error);
+ return error;
+ }
+
+ /*
+ * Disable all interrupt causes for the interrupt:
+ */
+ error = dprc_set_irq_mask(mc_io, 0, mc_dev->mc_handle, 0, 0x0);
+ if (error < 0) {
+ dev_err(&mc_dev->dev,
+ "Disabling DPRC IRQ failed: dprc_set_irq_mask() failed: %d\n",
+ error);
+ return error;
+ }
+
+ /*
+ * Clear any leftover interrupts:
+ */
+ error = dprc_clear_irq_status(mc_io, 0, mc_dev->mc_handle, 0, ~0x0U);
+ if (error < 0) {
+ dev_err(&mc_dev->dev,
+ "Disabling DPRC IRQ failed: dprc_clear_irq_status() failed: %d\n",
+ error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int register_dprc_irq_handler(struct fsl_mc_device *mc_dev)
+{
+ int error;
+ struct fsl_mc_device_irq *irq = mc_dev->irqs[0];
+
+ /*
+ * NOTE: devm_request_threaded_irq() invokes the device-specific
+ * function that programs the MSI physically in the device
+ */
+ error = devm_request_threaded_irq(&mc_dev->dev,
+ irq->msi_desc->irq,
+ dprc_irq0_handler,
+ dprc_irq0_handler_thread,
+ IRQF_NO_SUSPEND | IRQF_ONESHOT,
+ dev_name(&mc_dev->dev),
+ &mc_dev->dev);
+ if (error < 0) {
+ dev_err(&mc_dev->dev,
+ "devm_request_threaded_irq() failed: %d\n",
+ error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int enable_dprc_irq(struct fsl_mc_device *mc_dev)
+{
+ int error;
+
+ /*
+ * Enable all interrupt causes for the interrupt:
+ */
+ error = dprc_set_irq_mask(mc_dev->mc_io, 0, mc_dev->mc_handle, 0,
+ ~0x0u);
+ if (error < 0) {
+ dev_err(&mc_dev->dev,
+ "Enabling DPRC IRQ failed: dprc_set_irq_mask() failed: %d\n",
+ error);
+
+ return error;
+ }
+
+ /*
+ * Enable generation of the interrupt:
+ */
+ error = dprc_set_irq_enable(mc_dev->mc_io, 0, mc_dev->mc_handle, 0, 1);
+ if (error < 0) {
+ dev_err(&mc_dev->dev,
+ "Enabling DPRC IRQ failed: dprc_set_irq_enable() failed: %d\n",
+ error);
+
+ return error;
+ }
+
+ return 0;
+}
+
+/*
+ * Setup interrupt for a given DPRC device
+ */
+static int dprc_setup_irq(struct fsl_mc_device *mc_dev)
+{
+ int error;
+
+ error = fsl_mc_allocate_irqs(mc_dev);
+ if (error < 0)
+ return error;
+
+ error = disable_dprc_irq(mc_dev);
+ if (error < 0)
+ goto error_free_irqs;
+
+ error = register_dprc_irq_handler(mc_dev);
+ if (error < 0)
+ goto error_free_irqs;
+
+ error = enable_dprc_irq(mc_dev);
+ if (error < 0)
+ goto error_free_irqs;
+
+ return 0;
+
+error_free_irqs:
+ fsl_mc_free_irqs(mc_dev);
+ return error;
+}
+
+/**
+ * dprc_probe - callback invoked when a DPRC is being bound to this driver
+ *
+ * @mc_dev: Pointer to fsl-mc device representing a DPRC
+ *
+ * It opens the physical DPRC in the MC.
+ * It scans the DPRC to discover the MC objects contained in it.
+ * It creates the interrupt pool for the MC bus associated with the DPRC.
+ * It configures the interrupts for the DPRC device itself.
+ */
+static int dprc_probe(struct fsl_mc_device *mc_dev)
+{
+ int error;
+ size_t region_size;
+ struct device *parent_dev = mc_dev->dev.parent;
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
+ bool mc_io_created = false;
+ bool msi_domain_set = false;
+ u16 major_ver, minor_ver;
+
+ if (!is_fsl_mc_bus_dprc(mc_dev))
+ return -EINVAL;
+
+ if (dev_get_msi_domain(&mc_dev->dev))
+ return -EINVAL;
+
+ if (!mc_dev->mc_io) {
+ /*
+ * This is a child DPRC:
+ */
+ if (!dev_is_fsl_mc(parent_dev))
+ return -EINVAL;
+
+ if (mc_dev->obj_desc.region_count == 0)
+ return -EINVAL;
+
+ region_size = resource_size(mc_dev->regions);
+
+ error = fsl_create_mc_io(&mc_dev->dev,
+ mc_dev->regions[0].start,
+ region_size,
+ NULL,
+ FSL_MC_IO_ATOMIC_CONTEXT_PORTAL,
+ &mc_dev->mc_io);
+ if (error < 0)
+ return error;
+
+ mc_io_created = true;
+
+ /*
+ * Inherit parent MSI domain:
+ */
+ dev_set_msi_domain(&mc_dev->dev,
+ dev_get_msi_domain(parent_dev));
+ msi_domain_set = true;
+ } else {
+ /*
+ * This is a root DPRC
+ */
+ struct irq_domain *mc_msi_domain;
+
+ if (dev_is_fsl_mc(parent_dev))
+ return -EINVAL;
+
+ error = fsl_mc_find_msi_domain(parent_dev,
+ &mc_msi_domain);
+ if (error < 0) {
+ dev_warn(&mc_dev->dev,
+ "WARNING: MC bus without interrupt support\n");
+ } else {
+ dev_set_msi_domain(&mc_dev->dev, mc_msi_domain);
+ msi_domain_set = true;
+ }
+ }
+
+ error = dprc_open(mc_dev->mc_io, 0, mc_dev->obj_desc.id,
+ &mc_dev->mc_handle);
+ if (error < 0) {
+ dev_err(&mc_dev->dev, "dprc_open() failed: %d\n", error);
+ goto error_cleanup_msi_domain;
+ }
+
+ error = dprc_get_attributes(mc_dev->mc_io, 0, mc_dev->mc_handle,
+ &mc_bus->dprc_attr);
+ if (error < 0) {
+ dev_err(&mc_dev->dev, "dprc_get_attributes() failed: %d\n",
+ error);
+ goto error_cleanup_open;
+ }
+
+ error = dprc_get_api_version(mc_dev->mc_io, 0,
+ &major_ver,
+ &minor_ver);
+ if (error < 0) {
+ dev_err(&mc_dev->dev, "dprc_get_api_version() failed: %d\n",
+ error);
+ goto error_cleanup_open;
+ }
+
+ if (major_ver < DPRC_MIN_VER_MAJOR ||
+ (major_ver == DPRC_MIN_VER_MAJOR &&
+ minor_ver < DPRC_MIN_VER_MINOR)) {
+ dev_err(&mc_dev->dev,
+ "ERROR: DPRC version %d.%d not supported\n",
+ major_ver, minor_ver);
+ error = -ENOTSUPP;
+ goto error_cleanup_open;
+ }
+
+ mutex_init(&mc_bus->scan_mutex);
+
+ /*
+ * Discover MC objects in DPRC object:
+ */
+ error = dprc_scan_container(mc_dev);
+ if (error < 0)
+ goto error_cleanup_open;
+
+ /*
+ * Configure interrupt for the DPRC object associated with this MC bus:
+ */
+ error = dprc_setup_irq(mc_dev);
+ if (error < 0)
+ goto error_cleanup_open;
+
+ dev_info(&mc_dev->dev, "DPRC device bound to driver");
+ return 0;
+
+error_cleanup_open:
+ (void)dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);
+
+error_cleanup_msi_domain:
+ if (msi_domain_set)
+ dev_set_msi_domain(&mc_dev->dev, NULL);
+
+ if (mc_io_created) {
+ fsl_destroy_mc_io(mc_dev->mc_io);
+ mc_dev->mc_io = NULL;
+ }
+
+ return error;
+}
+
+/*
+ * Tear down interrupt for a given DPRC object
+ */
+static void dprc_teardown_irq(struct fsl_mc_device *mc_dev)
+{
+ struct fsl_mc_device_irq *irq = mc_dev->irqs[0];
+
+ (void)disable_dprc_irq(mc_dev);
+
+ devm_free_irq(&mc_dev->dev, irq->msi_desc->irq, &mc_dev->dev);
+
+ fsl_mc_free_irqs(mc_dev);
+}
+
+/**
+ * dprc_remove - callback invoked when a DPRC is being unbound from this driver
+ *
+ * @mc_dev: Pointer to fsl-mc device representing the DPRC
+ *
+ * It removes the DPRC's child objects from Linux (not from the MC) and
+ * closes the DPRC device in the MC.
+ * It tears down the interrupts that were configured for the DPRC device.
+ * It destroys the interrupt pool associated with this MC bus.
+ */
+static int dprc_remove(struct fsl_mc_device *mc_dev)
+{
+ int error;
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
+
+ if (!is_fsl_mc_bus_dprc(mc_dev))
+ return -EINVAL;
+ if (!mc_dev->mc_io)
+ return -EINVAL;
+
+ if (!mc_bus->irq_resources)
+ return -EINVAL;
+
+ if (dev_get_msi_domain(&mc_dev->dev))
+ dprc_teardown_irq(mc_dev);
+
+ device_for_each_child(&mc_dev->dev, NULL, __fsl_mc_device_remove);
+
+ if (dev_get_msi_domain(&mc_dev->dev)) {
+ fsl_mc_cleanup_irq_pool(mc_bus);
+ dev_set_msi_domain(&mc_dev->dev, NULL);
+ }
+
+ fsl_mc_cleanup_all_resource_pools(mc_dev);
+
+ error = dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);
+ if (error < 0)
+ dev_err(&mc_dev->dev, "dprc_close() failed: %d\n", error);
+
+ if (!fsl_mc_is_root_dprc(&mc_dev->dev)) {
+ fsl_destroy_mc_io(mc_dev->mc_io);
+ mc_dev->mc_io = NULL;
+ }
+
+ dev_info(&mc_dev->dev, "DPRC device unbound from driver");
+ return 0;
+}
+
+static const struct fsl_mc_device_id match_id_table[] = {
+ {
+ .vendor = FSL_MC_VENDOR_FREESCALE,
+ .obj_type = "dprc"},
+ {.vendor = 0x0},
+};
+
+static struct fsl_mc_driver dprc_driver = {
+ .driver = {
+ .name = FSL_MC_DPRC_DRIVER_NAME,
+ .owner = THIS_MODULE,
+ .pm = NULL,
+ },
+ .match_id_table = match_id_table,
+ .probe = dprc_probe,
+ .remove = dprc_remove,
+};
+
+int __init dprc_driver_init(void)
+{
+ return fsl_mc_driver_register(&dprc_driver);
+}
+
+void dprc_driver_exit(void)
+{
+ fsl_mc_driver_unregister(&dprc_driver);
+}
diff --git a/drivers/bus/fsl-mc/dprc.c b/drivers/bus/fsl-mc/dprc.c
new file mode 100644
index 0000000..5c23e8d
--- /dev/null
+++ b/drivers/bus/fsl-mc/dprc.c
@@ -0,0 +1,532 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/fsl/mc.h>
+
+#include "fsl-mc-private.h"
+
+/**
+ * dprc_open() - Open DPRC object for use
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @container_id: Container ID to open
+ * @token: Returned token of DPRC object
+ *
+ * Return: '0' on Success; Error code otherwise.
+ *
+ * @warning Required before any operation on the object.
+ */
+int dprc_open(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ int container_id,
+ u16 *token)
+{
+ struct mc_command cmd = { 0 };
+ struct dprc_cmd_open *cmd_params;
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_OPEN, cmd_flags,
+ 0);
+ cmd_params = (struct dprc_cmd_open *)cmd.params;
+ cmd_params->container_id = cpu_to_le32(container_id);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *token = mc_cmd_hdr_read_token(&cmd);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(dprc_open);
+
+/**
+ * dprc_close() - Close the control session of the object
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPRC object
+ *
+ * After this function is called, no further operations are
+ * allowed on the object without opening a new control session.
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dprc_close(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_CLOSE, cmd_flags,
+ token);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL_GPL(dprc_close);
+
+/**
+ * dprc_set_irq() - Set IRQ information for the DPRC to trigger an interrupt.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPRC object
+ * @irq_index: Identifies the interrupt index to configure
+ * @irq_cfg: IRQ configuration
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dprc_set_irq(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ u8 irq_index,
+ struct dprc_irq_cfg *irq_cfg)
+{
+ struct mc_command cmd = { 0 };
+ struct dprc_cmd_set_irq *cmd_params;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ,
+ cmd_flags,
+ token);
+ cmd_params = (struct dprc_cmd_set_irq *)cmd.params;
+ cmd_params->irq_val = cpu_to_le32(irq_cfg->val);
+ cmd_params->irq_index = irq_index;
+ cmd_params->irq_addr = cpu_to_le64(irq_cfg->paddr);
+ cmd_params->irq_num = cpu_to_le32(irq_cfg->irq_num);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dprc_set_irq_enable() - Set overall interrupt state.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPRC object
+ * @irq_index: The interrupt index to configure
+ * @en: Interrupt state - enable = 1, disable = 0
+ *
+ * Allows GPP software to control when interrupts are generated.
+ * Each interrupt can have up to 32 causes. The enable/disable control's the
+ * overall interrupt state. if the interrupt is disabled no causes will cause
+ * an interrupt.
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dprc_set_irq_enable(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ u8 irq_index,
+ u8 en)
+{
+ struct mc_command cmd = { 0 };
+ struct dprc_cmd_set_irq_enable *cmd_params;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ_ENABLE,
+ cmd_flags, token);
+ cmd_params = (struct dprc_cmd_set_irq_enable *)cmd.params;
+ cmd_params->enable = en & DPRC_ENABLE;
+ cmd_params->irq_index = irq_index;
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dprc_set_irq_mask() - Set interrupt mask.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPRC object
+ * @irq_index: The interrupt index to configure
+ * @mask: event mask to trigger interrupt;
+ * each bit:
+ * 0 = ignore event
+ * 1 = consider event for asserting irq
+ *
+ * Every interrupt can have up to 32 causes and the interrupt model supports
+ * masking/unmasking each cause independently
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dprc_set_irq_mask(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ u8 irq_index,
+ u32 mask)
+{
+ struct mc_command cmd = { 0 };
+ struct dprc_cmd_set_irq_mask *cmd_params;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ_MASK,
+ cmd_flags, token);
+ cmd_params = (struct dprc_cmd_set_irq_mask *)cmd.params;
+ cmd_params->mask = cpu_to_le32(mask);
+ cmd_params->irq_index = irq_index;
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dprc_get_irq_status() - Get the current status of any pending interrupts.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPRC object
+ * @irq_index: The interrupt index to configure
+ * @status: Returned interrupts status - one bit per cause:
+ * 0 = no interrupt pending
+ * 1 = interrupt pending
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dprc_get_irq_status(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ u8 irq_index,
+ u32 *status)
+{
+ struct mc_command cmd = { 0 };
+ struct dprc_cmd_get_irq_status *cmd_params;
+ struct dprc_rsp_get_irq_status *rsp_params;
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_IRQ_STATUS,
+ cmd_flags, token);
+ cmd_params = (struct dprc_cmd_get_irq_status *)cmd.params;
+ cmd_params->status = cpu_to_le32(*status);
+ cmd_params->irq_index = irq_index;
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ rsp_params = (struct dprc_rsp_get_irq_status *)cmd.params;
+ *status = le32_to_cpu(rsp_params->status);
+
+ return 0;
+}
+
+/**
+ * dprc_clear_irq_status() - Clear a pending interrupt's status
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPRC object
+ * @irq_index: The interrupt index to configure
+ * @status: bits to clear (W1C) - one bit per cause:
+ * 0 = don't change
+ * 1 = clear status bit
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dprc_clear_irq_status(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ u8 irq_index,
+ u32 status)
+{
+ struct mc_command cmd = { 0 };
+ struct dprc_cmd_clear_irq_status *cmd_params;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_CLEAR_IRQ_STATUS,
+ cmd_flags, token);
+ cmd_params = (struct dprc_cmd_clear_irq_status *)cmd.params;
+ cmd_params->status = cpu_to_le32(status);
+ cmd_params->irq_index = irq_index;
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dprc_get_attributes() - Obtains container attributes
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPRC object
+ * @attributes Returned container attributes
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dprc_get_attributes(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ struct dprc_attributes *attr)
+{
+ struct mc_command cmd = { 0 };
+ struct dprc_rsp_get_attributes *rsp_params;
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_ATTR,
+ cmd_flags,
+ token);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ rsp_params = (struct dprc_rsp_get_attributes *)cmd.params;
+ attr->container_id = le32_to_cpu(rsp_params->container_id);
+ attr->icid = le16_to_cpu(rsp_params->icid);
+ attr->options = le32_to_cpu(rsp_params->options);
+ attr->portal_id = le32_to_cpu(rsp_params->portal_id);
+
+ return 0;
+}
+
+/**
+ * dprc_get_obj_count() - Obtains the number of objects in the DPRC
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPRC object
+ * @obj_count: Number of objects assigned to the DPRC
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dprc_get_obj_count(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ int *obj_count)
+{
+ struct mc_command cmd = { 0 };
+ struct dprc_rsp_get_obj_count *rsp_params;
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ_COUNT,
+ cmd_flags, token);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ rsp_params = (struct dprc_rsp_get_obj_count *)cmd.params;
+ *obj_count = le32_to_cpu(rsp_params->obj_count);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(dprc_get_obj_count);
+
+/**
+ * dprc_get_obj() - Get general information on an object
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPRC object
+ * @obj_index: Index of the object to be queried (< obj_count)
+ * @obj_desc: Returns the requested object descriptor
+ *
+ * The object descriptors are retrieved one by one by incrementing
+ * obj_index up to (not including) the value of obj_count returned
+ * from dprc_get_obj_count(). dprc_get_obj_count() must
+ * be called prior to dprc_get_obj().
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dprc_get_obj(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ int obj_index,
+ struct fsl_mc_obj_desc *obj_desc)
+{
+ struct mc_command cmd = { 0 };
+ struct dprc_cmd_get_obj *cmd_params;
+ struct dprc_rsp_get_obj *rsp_params;
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ,
+ cmd_flags,
+ token);
+ cmd_params = (struct dprc_cmd_get_obj *)cmd.params;
+ cmd_params->obj_index = cpu_to_le32(obj_index);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ rsp_params = (struct dprc_rsp_get_obj *)cmd.params;
+ obj_desc->id = le32_to_cpu(rsp_params->id);
+ obj_desc->vendor = le16_to_cpu(rsp_params->vendor);
+ obj_desc->irq_count = rsp_params->irq_count;
+ obj_desc->region_count = rsp_params->region_count;
+ obj_desc->state = le32_to_cpu(rsp_params->state);
+ obj_desc->ver_major = le16_to_cpu(rsp_params->version_major);
+ obj_desc->ver_minor = le16_to_cpu(rsp_params->version_minor);
+ obj_desc->flags = le16_to_cpu(rsp_params->flags);
+ strncpy(obj_desc->type, rsp_params->type, 16);
+ obj_desc->type[15] = '\0';
+ strncpy(obj_desc->label, rsp_params->label, 16);
+ obj_desc->label[15] = '\0';
+ return 0;
+}
+EXPORT_SYMBOL_GPL(dprc_get_obj);
+
+/**
+ * dprc_set_obj_irq() - Set IRQ information for object to trigger an interrupt.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPRC object
+ * @obj_type: Type of the object to set its IRQ
+ * @obj_id: ID of the object to set its IRQ
+ * @irq_index: The interrupt index to configure
+ * @irq_cfg: IRQ configuration
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dprc_set_obj_irq(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ char *obj_type,
+ int obj_id,
+ u8 irq_index,
+ struct dprc_irq_cfg *irq_cfg)
+{
+ struct mc_command cmd = { 0 };
+ struct dprc_cmd_set_obj_irq *cmd_params;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_OBJ_IRQ,
+ cmd_flags,
+ token);
+ cmd_params = (struct dprc_cmd_set_obj_irq *)cmd.params;
+ cmd_params->irq_val = cpu_to_le32(irq_cfg->val);
+ cmd_params->irq_index = irq_index;
+ cmd_params->irq_addr = cpu_to_le64(irq_cfg->paddr);
+ cmd_params->irq_num = cpu_to_le32(irq_cfg->irq_num);
+ cmd_params->obj_id = cpu_to_le32(obj_id);
+ strncpy(cmd_params->obj_type, obj_type, 16);
+ cmd_params->obj_type[15] = '\0';
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL_GPL(dprc_set_obj_irq);
+
+/**
+ * dprc_get_obj_region() - Get region information for a specified object.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPRC object
+ * @obj_type; Object type as returned in dprc_get_obj()
+ * @obj_id: Unique object instance as returned in dprc_get_obj()
+ * @region_index: The specific region to query
+ * @region_desc: Returns the requested region descriptor
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dprc_get_obj_region(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ char *obj_type,
+ int obj_id,
+ u8 region_index,
+ struct dprc_region_desc *region_desc)
+{
+ struct mc_command cmd = { 0 };
+ struct dprc_cmd_get_obj_region *cmd_params;
+ struct dprc_rsp_get_obj_region *rsp_params;
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ_REG,
+ cmd_flags, token);
+ cmd_params = (struct dprc_cmd_get_obj_region *)cmd.params;
+ cmd_params->obj_id = cpu_to_le32(obj_id);
+ cmd_params->region_index = region_index;
+ strncpy(cmd_params->obj_type, obj_type, 16);
+ cmd_params->obj_type[15] = '\0';
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ rsp_params = (struct dprc_rsp_get_obj_region *)cmd.params;
+ region_desc->base_offset = le64_to_cpu(rsp_params->base_addr);
+ region_desc->size = le32_to_cpu(rsp_params->size);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(dprc_get_obj_region);
+
+/**
+ * dprc_get_api_version - Get Data Path Resource Container API version
+ * @mc_io: Pointer to Mc portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @major_ver: Major version of Data Path Resource Container API
+ * @minor_ver: Minor version of Data Path Resource Container API
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dprc_get_api_version(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 *major_ver,
+ u16 *minor_ver)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_API_VERSION,
+ cmd_flags, 0);
+
+ /* send command to mc */
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ mc_cmd_read_api_version(&cmd, major_ver, minor_ver);
+
+ return 0;
+}
+
+/**
+ * dprc_get_container_id - Get container ID associated with a given portal.
+ * @mc_io: Pointer to Mc portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @container_id: Requested container id
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dprc_get_container_id(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ int *container_id)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_CONT_ID,
+ cmd_flags,
+ 0);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ *container_id = (int)mc_cmd_read_object_id(&cmd);
+
+ return 0;
+}
diff --git a/drivers/bus/fsl-mc/fsl-mc-allocator.c b/drivers/bus/fsl-mc/fsl-mc-allocator.c
new file mode 100644
index 0000000..452c5d7
--- /dev/null
+++ b/drivers/bus/fsl-mc/fsl-mc-allocator.c
@@ -0,0 +1,648 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * fsl-mc object allocator driver
+ *
+ * Copyright (C) 2013-2016 Freescale Semiconductor, Inc.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/msi.h>
+#include <linux/fsl/mc.h>
+
+#include "fsl-mc-private.h"
+
+static bool __must_check fsl_mc_is_allocatable(struct fsl_mc_device *mc_dev)
+{
+ return is_fsl_mc_bus_dpbp(mc_dev) ||
+ is_fsl_mc_bus_dpmcp(mc_dev) ||
+ is_fsl_mc_bus_dpcon(mc_dev);
+}
+
+/**
+ * fsl_mc_resource_pool_add_device - add allocatable object to a resource
+ * pool of a given fsl-mc bus
+ *
+ * @mc_bus: pointer to the fsl-mc bus
+ * @pool_type: pool type
+ * @mc_dev: pointer to allocatable fsl-mc device
+ */
+static int __must_check fsl_mc_resource_pool_add_device(struct fsl_mc_bus
+ *mc_bus,
+ enum fsl_mc_pool_type
+ pool_type,
+ struct fsl_mc_device
+ *mc_dev)
+{
+ struct fsl_mc_resource_pool *res_pool;
+ struct fsl_mc_resource *resource;
+ struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
+ int error = -EINVAL;
+
+ if (pool_type < 0 || pool_type >= FSL_MC_NUM_POOL_TYPES)
+ goto out;
+ if (!fsl_mc_is_allocatable(mc_dev))
+ goto out;
+ if (mc_dev->resource)
+ goto out;
+
+ res_pool = &mc_bus->resource_pools[pool_type];
+ if (res_pool->type != pool_type)
+ goto out;
+ if (res_pool->mc_bus != mc_bus)
+ goto out;
+
+ mutex_lock(&res_pool->mutex);
+
+ if (res_pool->max_count < 0)
+ goto out_unlock;
+ if (res_pool->free_count < 0 ||
+ res_pool->free_count > res_pool->max_count)
+ goto out_unlock;
+
+ resource = devm_kzalloc(&mc_bus_dev->dev, sizeof(*resource),
+ GFP_KERNEL);
+ if (!resource) {
+ error = -ENOMEM;
+ dev_err(&mc_bus_dev->dev,
+ "Failed to allocate memory for fsl_mc_resource\n");
+ goto out_unlock;
+ }
+
+ resource->type = pool_type;
+ resource->id = mc_dev->obj_desc.id;
+ resource->data = mc_dev;
+ resource->parent_pool = res_pool;
+ INIT_LIST_HEAD(&resource->node);
+ list_add_tail(&resource->node, &res_pool->free_list);
+ mc_dev->resource = resource;
+ res_pool->free_count++;
+ res_pool->max_count++;
+ error = 0;
+out_unlock:
+ mutex_unlock(&res_pool->mutex);
+out:
+ return error;
+}
+
+/**
+ * fsl_mc_resource_pool_remove_device - remove an allocatable device from a
+ * resource pool
+ *
+ * @mc_dev: pointer to allocatable fsl-mc device
+ *
+ * It permanently removes an allocatable fsl-mc device from the resource
+ * pool. It's an error if the device is in use.
+ */
+static int __must_check fsl_mc_resource_pool_remove_device(struct fsl_mc_device
+ *mc_dev)
+{
+ struct fsl_mc_device *mc_bus_dev;
+ struct fsl_mc_bus *mc_bus;
+ struct fsl_mc_resource_pool *res_pool;
+ struct fsl_mc_resource *resource;
+ int error = -EINVAL;
+
+ if (!fsl_mc_is_allocatable(mc_dev))
+ goto out;
+
+ resource = mc_dev->resource;
+ if (!resource || resource->data != mc_dev)
+ goto out;
+
+ mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
+ mc_bus = to_fsl_mc_bus(mc_bus_dev);
+ res_pool = resource->parent_pool;
+ if (res_pool != &mc_bus->resource_pools[resource->type])
+ goto out;
+
+ mutex_lock(&res_pool->mutex);
+
+ if (res_pool->max_count <= 0)
+ goto out_unlock;
+ if (res_pool->free_count <= 0 ||
+ res_pool->free_count > res_pool->max_count)
+ goto out_unlock;
+
+ /*
+ * If the device is currently allocated, its resource is not
+ * in the free list and thus, the device cannot be removed.
+ */
+ if (list_empty(&resource->node)) {
+ error = -EBUSY;
+ dev_err(&mc_bus_dev->dev,
+ "Device %s cannot be removed from resource pool\n",
+ dev_name(&mc_dev->dev));
+ goto out_unlock;
+ }
+
+ list_del_init(&resource->node);
+ res_pool->free_count--;
+ res_pool->max_count--;
+
+ devm_kfree(&mc_bus_dev->dev, resource);
+ mc_dev->resource = NULL;
+ error = 0;
+out_unlock:
+ mutex_unlock(&res_pool->mutex);
+out:
+ return error;
+}
+
+static const char *const fsl_mc_pool_type_strings[] = {
+ [FSL_MC_POOL_DPMCP] = "dpmcp",
+ [FSL_MC_POOL_DPBP] = "dpbp",
+ [FSL_MC_POOL_DPCON] = "dpcon",
+ [FSL_MC_POOL_IRQ] = "irq",
+};
+
+static int __must_check object_type_to_pool_type(const char *object_type,
+ enum fsl_mc_pool_type
+ *pool_type)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(fsl_mc_pool_type_strings); i++) {
+ if (strcmp(object_type, fsl_mc_pool_type_strings[i]) == 0) {
+ *pool_type = i;
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
+
+int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus,
+ enum fsl_mc_pool_type pool_type,
+ struct fsl_mc_resource **new_resource)
+{
+ struct fsl_mc_resource_pool *res_pool;
+ struct fsl_mc_resource *resource;
+ struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
+ int error = -EINVAL;
+
+ BUILD_BUG_ON(ARRAY_SIZE(fsl_mc_pool_type_strings) !=
+ FSL_MC_NUM_POOL_TYPES);
+
+ *new_resource = NULL;
+ if (pool_type < 0 || pool_type >= FSL_MC_NUM_POOL_TYPES)
+ goto out;
+
+ res_pool = &mc_bus->resource_pools[pool_type];
+ if (res_pool->mc_bus != mc_bus)
+ goto out;
+
+ mutex_lock(&res_pool->mutex);
+ resource = list_first_entry_or_null(&res_pool->free_list,
+ struct fsl_mc_resource, node);
+
+ if (!resource) {
+ error = -ENXIO;
+ dev_err(&mc_bus_dev->dev,
+ "No more resources of type %s left\n",
+ fsl_mc_pool_type_strings[pool_type]);
+ goto out_unlock;
+ }
+
+ if (resource->type != pool_type)
+ goto out_unlock;
+ if (resource->parent_pool != res_pool)
+ goto out_unlock;
+ if (res_pool->free_count <= 0 ||
+ res_pool->free_count > res_pool->max_count)
+ goto out_unlock;
+
+ list_del_init(&resource->node);
+
+ res_pool->free_count--;
+ error = 0;
+out_unlock:
+ mutex_unlock(&res_pool->mutex);
+ *new_resource = resource;
+out:
+ return error;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_resource_allocate);
+
+void fsl_mc_resource_free(struct fsl_mc_resource *resource)
+{
+ struct fsl_mc_resource_pool *res_pool;
+
+ res_pool = resource->parent_pool;
+ if (resource->type != res_pool->type)
+ return;
+
+ mutex_lock(&res_pool->mutex);
+ if (res_pool->free_count < 0 ||
+ res_pool->free_count >= res_pool->max_count)
+ goto out_unlock;
+
+ if (!list_empty(&resource->node))
+ goto out_unlock;
+
+ list_add_tail(&resource->node, &res_pool->free_list);
+ res_pool->free_count++;
+out_unlock:
+ mutex_unlock(&res_pool->mutex);
+}
+EXPORT_SYMBOL_GPL(fsl_mc_resource_free);
+
+/**
+ * fsl_mc_object_allocate - Allocates an fsl-mc object of the given
+ * pool type from a given fsl-mc bus instance
+ *
+ * @mc_dev: fsl-mc device which is used in conjunction with the
+ * allocated object
+ * @pool_type: pool type
+ * @new_mc_dev: pointer to area where the pointer to the allocated device
+ * is to be returned
+ *
+ * Allocatable objects are always used in conjunction with some functional
+ * device. This function allocates an object of the specified type from
+ * the DPRC containing the functional device.
+ *
+ * NOTE: pool_type must be different from FSL_MC_POOL_MCP, since MC
+ * portals are allocated using fsl_mc_portal_allocate(), instead of
+ * this function.
+ */
+int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev,
+ enum fsl_mc_pool_type pool_type,
+ struct fsl_mc_device **new_mc_adev)
+{
+ struct fsl_mc_device *mc_bus_dev;
+ struct fsl_mc_bus *mc_bus;
+ struct fsl_mc_device *mc_adev;
+ int error = -EINVAL;
+ struct fsl_mc_resource *resource = NULL;
+
+ *new_mc_adev = NULL;
+ if (mc_dev->flags & FSL_MC_IS_DPRC)
+ goto error;
+
+ if (!dev_is_fsl_mc(mc_dev->dev.parent))
+ goto error;
+
+ if (pool_type == FSL_MC_POOL_DPMCP)
+ goto error;
+
+ mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
+ mc_bus = to_fsl_mc_bus(mc_bus_dev);
+ error = fsl_mc_resource_allocate(mc_bus, pool_type, &resource);
+ if (error < 0)
+ goto error;
+
+ mc_adev = resource->data;
+ if (!mc_adev)
+ goto error;
+
+ *new_mc_adev = mc_adev;
+ return 0;
+error:
+ if (resource)
+ fsl_mc_resource_free(resource);
+
+ return error;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_object_allocate);
+
+/**
+ * fsl_mc_object_free - Returns an fsl-mc object to the resource
+ * pool where it came from.
+ * @mc_adev: Pointer to the fsl-mc device
+ */
+void fsl_mc_object_free(struct fsl_mc_device *mc_adev)
+{
+ struct fsl_mc_resource *resource;
+
+ resource = mc_adev->resource;
+ if (resource->type == FSL_MC_POOL_DPMCP)
+ return;
+ if (resource->data != mc_adev)
+ return;
+
+ fsl_mc_resource_free(resource);
+}
+EXPORT_SYMBOL_GPL(fsl_mc_object_free);
+
+/*
+ * A DPRC and the devices in the DPRC all share the same GIC-ITS device
+ * ID. A block of IRQs is pre-allocated and maintained in a pool
+ * from which devices can allocate them when needed.
+ */
+
+/*
+ * Initialize the interrupt pool associated with an fsl-mc bus.
+ * It allocates a block of IRQs from the GIC-ITS.
+ */
+int fsl_mc_populate_irq_pool(struct fsl_mc_bus *mc_bus,
+ unsigned int irq_count)
+{
+ unsigned int i;
+ struct msi_desc *msi_desc;
+ struct fsl_mc_device_irq *irq_resources;
+ struct fsl_mc_device_irq *mc_dev_irq;
+ int error;
+ struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
+ struct fsl_mc_resource_pool *res_pool =
+ &mc_bus->resource_pools[FSL_MC_POOL_IRQ];
+
+ if (irq_count == 0 ||
+ irq_count > FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS)
+ return -EINVAL;
+
+ error = fsl_mc_msi_domain_alloc_irqs(&mc_bus_dev->dev, irq_count);
+ if (error < 0)
+ return error;
+
+ irq_resources = devm_kzalloc(&mc_bus_dev->dev,
+ sizeof(*irq_resources) * irq_count,
+ GFP_KERNEL);
+ if (!irq_resources) {
+ error = -ENOMEM;
+ goto cleanup_msi_irqs;
+ }
+
+ for (i = 0; i < irq_count; i++) {
+ mc_dev_irq = &irq_resources[i];
+
+ /*
+ * NOTE: This mc_dev_irq's MSI addr/value pair will be set
+ * by the fsl_mc_msi_write_msg() callback
+ */
+ mc_dev_irq->resource.type = res_pool->type;
+ mc_dev_irq->resource.data = mc_dev_irq;
+ mc_dev_irq->resource.parent_pool = res_pool;
+ INIT_LIST_HEAD(&mc_dev_irq->resource.node);
+ list_add_tail(&mc_dev_irq->resource.node, &res_pool->free_list);
+ }
+
+ for_each_msi_entry(msi_desc, &mc_bus_dev->dev) {
+ mc_dev_irq = &irq_resources[msi_desc->fsl_mc.msi_index];
+ mc_dev_irq->msi_desc = msi_desc;
+ mc_dev_irq->resource.id = msi_desc->irq;
+ }
+
+ res_pool->max_count = irq_count;
+ res_pool->free_count = irq_count;
+ mc_bus->irq_resources = irq_resources;
+ return 0;
+
+cleanup_msi_irqs:
+ fsl_mc_msi_domain_free_irqs(&mc_bus_dev->dev);
+ return error;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_populate_irq_pool);
+
+/**
+ * Teardown the interrupt pool associated with an fsl-mc bus.
+ * It frees the IRQs that were allocated to the pool, back to the GIC-ITS.
+ */
+void fsl_mc_cleanup_irq_pool(struct fsl_mc_bus *mc_bus)
+{
+ struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
+ struct fsl_mc_resource_pool *res_pool =
+ &mc_bus->resource_pools[FSL_MC_POOL_IRQ];
+
+ if (!mc_bus->irq_resources)
+ return;
+
+ if (res_pool->max_count == 0)
+ return;
+
+ if (res_pool->free_count != res_pool->max_count)
+ return;
+
+ INIT_LIST_HEAD(&res_pool->free_list);
+ res_pool->max_count = 0;
+ res_pool->free_count = 0;
+ mc_bus->irq_resources = NULL;
+ fsl_mc_msi_domain_free_irqs(&mc_bus_dev->dev);
+}
+EXPORT_SYMBOL_GPL(fsl_mc_cleanup_irq_pool);
+
+/**
+ * Allocate the IRQs required by a given fsl-mc device.
+ */
+int __must_check fsl_mc_allocate_irqs(struct fsl_mc_device *mc_dev)
+{
+ int i;
+ int irq_count;
+ int res_allocated_count = 0;
+ int error = -EINVAL;
+ struct fsl_mc_device_irq **irqs = NULL;
+ struct fsl_mc_bus *mc_bus;
+ struct fsl_mc_resource_pool *res_pool;
+
+ if (mc_dev->irqs)
+ return -EINVAL;
+
+ irq_count = mc_dev->obj_desc.irq_count;
+ if (irq_count == 0)
+ return -EINVAL;
+
+ if (is_fsl_mc_bus_dprc(mc_dev))
+ mc_bus = to_fsl_mc_bus(mc_dev);
+ else
+ mc_bus = to_fsl_mc_bus(to_fsl_mc_device(mc_dev->dev.parent));
+
+ if (!mc_bus->irq_resources)
+ return -EINVAL;
+
+ res_pool = &mc_bus->resource_pools[FSL_MC_POOL_IRQ];
+ if (res_pool->free_count < irq_count) {
+ dev_err(&mc_dev->dev,
+ "Not able to allocate %u irqs for device\n", irq_count);
+ return -ENOSPC;
+ }
+
+ irqs = devm_kzalloc(&mc_dev->dev, irq_count * sizeof(irqs[0]),
+ GFP_KERNEL);
+ if (!irqs)
+ return -ENOMEM;
+
+ for (i = 0; i < irq_count; i++) {
+ struct fsl_mc_resource *resource;
+
+ error = fsl_mc_resource_allocate(mc_bus, FSL_MC_POOL_IRQ,
+ &resource);
+ if (error < 0)
+ goto error_resource_alloc;
+
+ irqs[i] = to_fsl_mc_irq(resource);
+ res_allocated_count++;
+
+ irqs[i]->mc_dev = mc_dev;
+ irqs[i]->dev_irq_index = i;
+ }
+
+ mc_dev->irqs = irqs;
+ return 0;
+
+error_resource_alloc:
+ for (i = 0; i < res_allocated_count; i++) {
+ irqs[i]->mc_dev = NULL;
+ fsl_mc_resource_free(&irqs[i]->resource);
+ }
+
+ return error;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_allocate_irqs);
+
+/*
+ * Frees the IRQs that were allocated for an fsl-mc device.
+ */
+void fsl_mc_free_irqs(struct fsl_mc_device *mc_dev)
+{
+ int i;
+ int irq_count;
+ struct fsl_mc_bus *mc_bus;
+ struct fsl_mc_device_irq **irqs = mc_dev->irqs;
+
+ if (!irqs)
+ return;
+
+ irq_count = mc_dev->obj_desc.irq_count;
+
+ if (is_fsl_mc_bus_dprc(mc_dev))
+ mc_bus = to_fsl_mc_bus(mc_dev);
+ else
+ mc_bus = to_fsl_mc_bus(to_fsl_mc_device(mc_dev->dev.parent));
+
+ if (!mc_bus->irq_resources)
+ return;
+
+ for (i = 0; i < irq_count; i++) {
+ irqs[i]->mc_dev = NULL;
+ fsl_mc_resource_free(&irqs[i]->resource);
+ }
+
+ mc_dev->irqs = NULL;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_free_irqs);
+
+void fsl_mc_init_all_resource_pools(struct fsl_mc_device *mc_bus_dev)
+{
+ int pool_type;
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
+
+ for (pool_type = 0; pool_type < FSL_MC_NUM_POOL_TYPES; pool_type++) {
+ struct fsl_mc_resource_pool *res_pool =
+ &mc_bus->resource_pools[pool_type];
+
+ res_pool->type = pool_type;
+ res_pool->max_count = 0;
+ res_pool->free_count = 0;
+ res_pool->mc_bus = mc_bus;
+ INIT_LIST_HEAD(&res_pool->free_list);
+ mutex_init(&res_pool->mutex);
+ }
+}
+
+static void fsl_mc_cleanup_resource_pool(struct fsl_mc_device *mc_bus_dev,
+ enum fsl_mc_pool_type pool_type)
+{
+ struct fsl_mc_resource *resource;
+ struct fsl_mc_resource *next;
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
+ struct fsl_mc_resource_pool *res_pool =
+ &mc_bus->resource_pools[pool_type];
+ int free_count = 0;
+
+ list_for_each_entry_safe(resource, next, &res_pool->free_list, node) {
+ free_count++;
+ devm_kfree(&mc_bus_dev->dev, resource);
+ }
+}
+
+void fsl_mc_cleanup_all_resource_pools(struct fsl_mc_device *mc_bus_dev)
+{
+ int pool_type;
+
+ for (pool_type = 0; pool_type < FSL_MC_NUM_POOL_TYPES; pool_type++)
+ fsl_mc_cleanup_resource_pool(mc_bus_dev, pool_type);
+}
+
+/**
+ * fsl_mc_allocator_probe - callback invoked when an allocatable device is
+ * being added to the system
+ */
+static int fsl_mc_allocator_probe(struct fsl_mc_device *mc_dev)
+{
+ enum fsl_mc_pool_type pool_type;
+ struct fsl_mc_device *mc_bus_dev;
+ struct fsl_mc_bus *mc_bus;
+ int error;
+
+ if (!fsl_mc_is_allocatable(mc_dev))
+ return -EINVAL;
+
+ mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
+ if (!dev_is_fsl_mc(&mc_bus_dev->dev))
+ return -EINVAL;
+
+ mc_bus = to_fsl_mc_bus(mc_bus_dev);
+ error = object_type_to_pool_type(mc_dev->obj_desc.type, &pool_type);
+ if (error < 0)
+ return error;
+
+ error = fsl_mc_resource_pool_add_device(mc_bus, pool_type, mc_dev);
+ if (error < 0)
+ return error;
+
+ dev_dbg(&mc_dev->dev,
+ "Allocatable fsl-mc device bound to fsl_mc_allocator driver");
+ return 0;
+}
+
+/**
+ * fsl_mc_allocator_remove - callback invoked when an allocatable device is
+ * being removed from the system
+ */
+static int fsl_mc_allocator_remove(struct fsl_mc_device *mc_dev)
+{
+ int error;
+
+ if (!fsl_mc_is_allocatable(mc_dev))
+ return -EINVAL;
+
+ if (mc_dev->resource) {
+ error = fsl_mc_resource_pool_remove_device(mc_dev);
+ if (error < 0)
+ return error;
+ }
+
+ dev_dbg(&mc_dev->dev,
+ "Allocatable fsl-mc device unbound from fsl_mc_allocator driver");
+ return 0;
+}
+
+static const struct fsl_mc_device_id match_id_table[] = {
+ {
+ .vendor = FSL_MC_VENDOR_FREESCALE,
+ .obj_type = "dpbp",
+ },
+ {
+ .vendor = FSL_MC_VENDOR_FREESCALE,
+ .obj_type = "dpmcp",
+ },
+ {
+ .vendor = FSL_MC_VENDOR_FREESCALE,
+ .obj_type = "dpcon",
+ },
+ {.vendor = 0x0},
+};
+
+static struct fsl_mc_driver fsl_mc_allocator_driver = {
+ .driver = {
+ .name = "fsl_mc_allocator",
+ .pm = NULL,
+ },
+ .match_id_table = match_id_table,
+ .probe = fsl_mc_allocator_probe,
+ .remove = fsl_mc_allocator_remove,
+};
+
+int __init fsl_mc_allocator_driver_init(void)
+{
+ return fsl_mc_driver_register(&fsl_mc_allocator_driver);
+}
diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c
new file mode 100644
index 0000000..1b333c4
--- /dev/null
+++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
@@ -0,0 +1,948 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Freescale Management Complex (MC) bus driver
+ *
+ * Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
+ * Author: German Rivera <[email protected]>
+ *
+ */
+
+#define pr_fmt(fmt) "fsl-mc: " fmt
+
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/limits.h>
+#include <linux/bitops.h>
+#include <linux/msi.h>
+#include <linux/dma-mapping.h>
+
+#include "fsl-mc-private.h"
+
+/**
+ * Default DMA mask for devices on a fsl-mc bus
+ */
+#define FSL_MC_DEFAULT_DMA_MASK (~0ULL)
+
+/**
+ * struct fsl_mc - Private data of a "fsl,qoriq-mc" platform device
+ * @root_mc_bus_dev: fsl-mc device representing the root DPRC
+ * @num_translation_ranges: number of entries in addr_translation_ranges
+ * @translation_ranges: array of bus to system address translation ranges
+ */
+struct fsl_mc {
+ struct fsl_mc_device *root_mc_bus_dev;
+ u8 num_translation_ranges;
+ struct fsl_mc_addr_translation_range *translation_ranges;
+};
+
+/**
+ * struct fsl_mc_addr_translation_range - bus to system address translation
+ * range
+ * @mc_region_type: Type of MC region for the range being translated
+ * @start_mc_offset: Start MC offset of the range being translated
+ * @end_mc_offset: MC offset of the first byte after the range (last MC
+ * offset of the range is end_mc_offset - 1)
+ * @start_phys_addr: system physical address corresponding to start_mc_addr
+ */
+struct fsl_mc_addr_translation_range {
+ enum dprc_region_type mc_region_type;
+ u64 start_mc_offset;
+ u64 end_mc_offset;
+ phys_addr_t start_phys_addr;
+};
+
+/**
+ * struct mc_version
+ * @major: Major version number: incremented on API compatibility changes
+ * @minor: Minor version number: incremented on API additions (that are
+ * backward compatible); reset when major version is incremented
+ * @revision: Internal revision number: incremented on implementation changes
+ * and/or bug fixes that have no impact on API
+ */
+struct mc_version {
+ u32 major;
+ u32 minor;
+ u32 revision;
+};
+
+/**
+ * fsl_mc_bus_match - device to driver matching callback
+ * @dev: the fsl-mc device to match against
+ * @drv: the device driver to search for matching fsl-mc object type
+ * structures
+ *
+ * Returns 1 on success, 0 otherwise.
+ */
+static int fsl_mc_bus_match(struct device *dev, struct device_driver *drv)
+{
+ const struct fsl_mc_device_id *id;
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+ struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(drv);
+ bool found = false;
+
+ if (!mc_drv->match_id_table)
+ goto out;
+
+ /*
+ * If the object is not 'plugged' don't match.
+ * Only exception is the root DPRC, which is a special case.
+ */
+ if ((mc_dev->obj_desc.state & FSL_MC_OBJ_STATE_PLUGGED) == 0 &&
+ !fsl_mc_is_root_dprc(&mc_dev->dev))
+ goto out;
+
+ /*
+ * Traverse the match_id table of the given driver, trying to find
+ * a matching for the given device.
+ */
+ for (id = mc_drv->match_id_table; id->vendor != 0x0; id++) {
+ if (id->vendor == mc_dev->obj_desc.vendor &&
+ strcmp(id->obj_type, mc_dev->obj_desc.type) == 0) {
+ found = true;
+
+ break;
+ }
+ }
+
+out:
+ dev_dbg(dev, "%smatched\n", found ? "" : "not ");
+ return found;
+}
+
+/**
+ * fsl_mc_bus_uevent - callback invoked when a device is added
+ */
+static int fsl_mc_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+
+ if (add_uevent_var(env, "MODALIAS=fsl-mc:v%08Xd%s",
+ mc_dev->obj_desc.vendor,
+ mc_dev->obj_desc.type))
+ return -ENOMEM;
+
+ return 0;
+}
+
+static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+
+ return sprintf(buf, "fsl-mc:v%08Xd%s\n", mc_dev->obj_desc.vendor,
+ mc_dev->obj_desc.type);
+}
+static DEVICE_ATTR_RO(modalias);
+
+static struct attribute *fsl_mc_dev_attrs[] = {
+ &dev_attr_modalias.attr,
+ NULL,
+};
+
+ATTRIBUTE_GROUPS(fsl_mc_dev);
+
+struct bus_type fsl_mc_bus_type = {
+ .name = "fsl-mc",
+ .match = fsl_mc_bus_match,
+ .uevent = fsl_mc_bus_uevent,
+ .dev_groups = fsl_mc_dev_groups,
+};
+EXPORT_SYMBOL_GPL(fsl_mc_bus_type);
+
+struct device_type fsl_mc_bus_dprc_type = {
+ .name = "fsl_mc_bus_dprc"
+};
+
+struct device_type fsl_mc_bus_dpni_type = {
+ .name = "fsl_mc_bus_dpni"
+};
+
+struct device_type fsl_mc_bus_dpio_type = {
+ .name = "fsl_mc_bus_dpio"
+};
+
+struct device_type fsl_mc_bus_dpsw_type = {
+ .name = "fsl_mc_bus_dpsw"
+};
+
+struct device_type fsl_mc_bus_dpbp_type = {
+ .name = "fsl_mc_bus_dpbp"
+};
+
+struct device_type fsl_mc_bus_dpcon_type = {
+ .name = "fsl_mc_bus_dpcon"
+};
+
+struct device_type fsl_mc_bus_dpmcp_type = {
+ .name = "fsl_mc_bus_dpmcp"
+};
+
+struct device_type fsl_mc_bus_dpmac_type = {
+ .name = "fsl_mc_bus_dpmac"
+};
+
+struct device_type fsl_mc_bus_dprtc_type = {
+ .name = "fsl_mc_bus_dprtc"
+};
+
+static struct device_type *fsl_mc_get_device_type(const char *type)
+{
+ static const struct {
+ struct device_type *dev_type;
+ const char *type;
+ } dev_types[] = {
+ { &fsl_mc_bus_dprc_type, "dprc" },
+ { &fsl_mc_bus_dpni_type, "dpni" },
+ { &fsl_mc_bus_dpio_type, "dpio" },
+ { &fsl_mc_bus_dpsw_type, "dpsw" },
+ { &fsl_mc_bus_dpbp_type, "dpbp" },
+ { &fsl_mc_bus_dpcon_type, "dpcon" },
+ { &fsl_mc_bus_dpmcp_type, "dpmcp" },
+ { &fsl_mc_bus_dpmac_type, "dpmac" },
+ { &fsl_mc_bus_dprtc_type, "dprtc" },
+ { NULL, NULL }
+ };
+ int i;
+
+ for (i = 0; dev_types[i].dev_type; i++)
+ if (!strcmp(dev_types[i].type, type))
+ return dev_types[i].dev_type;
+
+ return NULL;
+}
+
+static int fsl_mc_driver_probe(struct device *dev)
+{
+ struct fsl_mc_driver *mc_drv;
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+ int error;
+
+ mc_drv = to_fsl_mc_driver(dev->driver);
+
+ error = mc_drv->probe(mc_dev);
+ if (error < 0) {
+ if (error != -EPROBE_DEFER)
+ dev_err(dev, "%s failed: %d\n", __func__, error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int fsl_mc_driver_remove(struct device *dev)
+{
+ struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(dev->driver);
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+ int error;
+
+ error = mc_drv->remove(mc_dev);
+ if (error < 0) {
+ dev_err(dev, "%s failed: %d\n", __func__, error);
+ return error;
+ }
+
+ return 0;
+}
+
+static void fsl_mc_driver_shutdown(struct device *dev)
+{
+ struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(dev->driver);
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+
+ mc_drv->shutdown(mc_dev);
+}
+
+/**
+ * __fsl_mc_driver_register - registers a child device driver with the
+ * MC bus
+ *
+ * This function is implicitly invoked from the registration function of
+ * fsl_mc device drivers, which is generated by the
+ * module_fsl_mc_driver() macro.
+ */
+int __fsl_mc_driver_register(struct fsl_mc_driver *mc_driver,
+ struct module *owner)
+{
+ int error;
+
+ mc_driver->driver.owner = owner;
+ mc_driver->driver.bus = &fsl_mc_bus_type;
+
+ if (mc_driver->probe)
+ mc_driver->driver.probe = fsl_mc_driver_probe;
+
+ if (mc_driver->remove)
+ mc_driver->driver.remove = fsl_mc_driver_remove;
+
+ if (mc_driver->shutdown)
+ mc_driver->driver.shutdown = fsl_mc_driver_shutdown;
+
+ error = driver_register(&mc_driver->driver);
+ if (error < 0) {
+ pr_err("driver_register() failed for %s: %d\n",
+ mc_driver->driver.name, error);
+ return error;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(__fsl_mc_driver_register);
+
+/**
+ * fsl_mc_driver_unregister - unregisters a device driver from the
+ * MC bus
+ */
+void fsl_mc_driver_unregister(struct fsl_mc_driver *mc_driver)
+{
+ driver_unregister(&mc_driver->driver);
+}
+EXPORT_SYMBOL_GPL(fsl_mc_driver_unregister);
+
+/**
+ * mc_get_version() - Retrieves the Management Complex firmware
+ * version information
+ * @mc_io: Pointer to opaque I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @mc_ver_info: Returned version information structure
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+static int mc_get_version(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ struct mc_version *mc_ver_info)
+{
+ struct mc_command cmd = { 0 };
+ struct dpmng_rsp_get_version *rsp_params;
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPMNG_CMDID_GET_VERSION,
+ cmd_flags,
+ 0);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ rsp_params = (struct dpmng_rsp_get_version *)cmd.params;
+ mc_ver_info->revision = le32_to_cpu(rsp_params->revision);
+ mc_ver_info->major = le32_to_cpu(rsp_params->version_major);
+ mc_ver_info->minor = le32_to_cpu(rsp_params->version_minor);
+
+ return 0;
+}
+
+/**
+ * fsl_mc_get_root_dprc - function to traverse to the root dprc
+ */
+static void fsl_mc_get_root_dprc(struct device *dev,
+ struct device **root_dprc_dev)
+{
+ if (!dev) {
+ *root_dprc_dev = NULL;
+ } else if (!dev_is_fsl_mc(dev)) {
+ *root_dprc_dev = NULL;
+ } else {
+ *root_dprc_dev = dev;
+ while (dev_is_fsl_mc((*root_dprc_dev)->parent))
+ *root_dprc_dev = (*root_dprc_dev)->parent;
+ }
+}
+
+static int get_dprc_attr(struct fsl_mc_io *mc_io,
+ int container_id, struct dprc_attributes *attr)
+{
+ u16 dprc_handle;
+ int error;
+
+ error = dprc_open(mc_io, 0, container_id, &dprc_handle);
+ if (error < 0) {
+ dev_err(mc_io->dev, "dprc_open() failed: %d\n", error);
+ return error;
+ }
+
+ memset(attr, 0, sizeof(struct dprc_attributes));
+ error = dprc_get_attributes(mc_io, 0, dprc_handle, attr);
+ if (error < 0) {
+ dev_err(mc_io->dev, "dprc_get_attributes() failed: %d\n",
+ error);
+ goto common_cleanup;
+ }
+
+ error = 0;
+
+common_cleanup:
+ (void)dprc_close(mc_io, 0, dprc_handle);
+ return error;
+}
+
+static int get_dprc_icid(struct fsl_mc_io *mc_io,
+ int container_id, u16 *icid)
+{
+ struct dprc_attributes attr;
+ int error;
+
+ error = get_dprc_attr(mc_io, container_id, &attr);
+ if (error == 0)
+ *icid = attr.icid;
+
+ return error;
+}
+
+static int translate_mc_addr(struct fsl_mc_device *mc_dev,
+ enum dprc_region_type mc_region_type,
+ u64 mc_offset, phys_addr_t *phys_addr)
+{
+ int i;
+ struct device *root_dprc_dev;
+ struct fsl_mc *mc;
+
+ fsl_mc_get_root_dprc(&mc_dev->dev, &root_dprc_dev);
+ mc = dev_get_drvdata(root_dprc_dev->parent);
+
+ if (mc->num_translation_ranges == 0) {
+ /*
+ * Do identity mapping:
+ */
+ *phys_addr = mc_offset;
+ return 0;
+ }
+
+ for (i = 0; i < mc->num_translation_ranges; i++) {
+ struct fsl_mc_addr_translation_range *range =
+ &mc->translation_ranges[i];
+
+ if (mc_region_type == range->mc_region_type &&
+ mc_offset >= range->start_mc_offset &&
+ mc_offset < range->end_mc_offset) {
+ *phys_addr = range->start_phys_addr +
+ (mc_offset - range->start_mc_offset);
+ return 0;
+ }
+ }
+
+ return -EFAULT;
+}
+
+static int fsl_mc_device_get_mmio_regions(struct fsl_mc_device *mc_dev,
+ struct fsl_mc_device *mc_bus_dev)
+{
+ int i;
+ int error;
+ struct resource *regions;
+ struct fsl_mc_obj_desc *obj_desc = &mc_dev->obj_desc;
+ struct device *parent_dev = mc_dev->dev.parent;
+ enum dprc_region_type mc_region_type;
+
+ if (is_fsl_mc_bus_dprc(mc_dev) ||
+ is_fsl_mc_bus_dpmcp(mc_dev)) {
+ mc_region_type = DPRC_REGION_TYPE_MC_PORTAL;
+ } else if (is_fsl_mc_bus_dpio(mc_dev)) {
+ mc_region_type = DPRC_REGION_TYPE_QBMAN_PORTAL;
+ } else {
+ /*
+ * This function should not have been called for this MC object
+ * type, as this object type is not supposed to have MMIO
+ * regions
+ */
+ return -EINVAL;
+ }
+
+ regions = kmalloc_array(obj_desc->region_count,
+ sizeof(regions[0]), GFP_KERNEL);
+ if (!regions)
+ return -ENOMEM;
+
+ for (i = 0; i < obj_desc->region_count; i++) {
+ struct dprc_region_desc region_desc;
+
+ error = dprc_get_obj_region(mc_bus_dev->mc_io,
+ 0,
+ mc_bus_dev->mc_handle,
+ obj_desc->type,
+ obj_desc->id, i, ®ion_desc);
+ if (error < 0) {
+ dev_err(parent_dev,
+ "dprc_get_obj_region() failed: %d\n", error);
+ goto error_cleanup_regions;
+ }
+
+ error = translate_mc_addr(mc_dev, mc_region_type,
+ region_desc.base_offset,
+ ®ions[i].start);
+ if (error < 0) {
+ dev_err(parent_dev,
+ "Invalid MC offset: %#x (for %s.%d\'s region %d)\n",
+ region_desc.base_offset,
+ obj_desc->type, obj_desc->id, i);
+ goto error_cleanup_regions;
+ }
+
+ regions[i].end = regions[i].start + region_desc.size - 1;
+ regions[i].name = "fsl-mc object MMIO region";
+ regions[i].flags = IORESOURCE_IO;
+ if (region_desc.flags & DPRC_REGION_CACHEABLE)
+ regions[i].flags |= IORESOURCE_CACHEABLE;
+ }
+
+ mc_dev->regions = regions;
+ return 0;
+
+error_cleanup_regions:
+ kfree(regions);
+ return error;
+}
+
+/**
+ * fsl_mc_is_root_dprc - function to check if a given device is a root dprc
+ */
+bool fsl_mc_is_root_dprc(struct device *dev)
+{
+ struct device *root_dprc_dev;
+
+ fsl_mc_get_root_dprc(dev, &root_dprc_dev);
+ if (!root_dprc_dev)
+ return false;
+ return dev == root_dprc_dev;
+}
+
+static void fsl_mc_device_release(struct device *dev)
+{
+ struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+
+ kfree(mc_dev->regions);
+
+ if (is_fsl_mc_bus_dprc(mc_dev))
+ kfree(to_fsl_mc_bus(mc_dev));
+ else
+ kfree(mc_dev);
+}
+
+/**
+ * Add a newly discovered fsl-mc device to be visible in Linux
+ */
+int fsl_mc_device_add(struct fsl_mc_obj_desc *obj_desc,
+ struct fsl_mc_io *mc_io,
+ struct device *parent_dev,
+ struct fsl_mc_device **new_mc_dev)
+{
+ int error;
+ struct fsl_mc_device *mc_dev = NULL;
+ struct fsl_mc_bus *mc_bus = NULL;
+ struct fsl_mc_device *parent_mc_dev;
+
+ if (dev_is_fsl_mc(parent_dev))
+ parent_mc_dev = to_fsl_mc_device(parent_dev);
+ else
+ parent_mc_dev = NULL;
+
+ if (strcmp(obj_desc->type, "dprc") == 0) {
+ /*
+ * Allocate an MC bus device object:
+ */
+ mc_bus = kzalloc(sizeof(*mc_bus), GFP_KERNEL);
+ if (!mc_bus)
+ return -ENOMEM;
+
+ mc_dev = &mc_bus->mc_dev;
+ } else {
+ /*
+ * Allocate a regular fsl_mc_device object:
+ */
+ mc_dev = kzalloc(sizeof(*mc_dev), GFP_KERNEL);
+ if (!mc_dev)
+ return -ENOMEM;
+ }
+
+ mc_dev->obj_desc = *obj_desc;
+ mc_dev->mc_io = mc_io;
+ device_initialize(&mc_dev->dev);
+ mc_dev->dev.parent = parent_dev;
+ mc_dev->dev.bus = &fsl_mc_bus_type;
+ mc_dev->dev.release = fsl_mc_device_release;
+ mc_dev->dev.type = fsl_mc_get_device_type(obj_desc->type);
+ if (!mc_dev->dev.type) {
+ error = -ENODEV;
+ dev_err(parent_dev, "unknown device type %s\n", obj_desc->type);
+ goto error_cleanup_dev;
+ }
+ dev_set_name(&mc_dev->dev, "%s.%d", obj_desc->type, obj_desc->id);
+
+ if (strcmp(obj_desc->type, "dprc") == 0) {
+ struct fsl_mc_io *mc_io2;
+
+ mc_dev->flags |= FSL_MC_IS_DPRC;
+
+ /*
+ * To get the DPRC's ICID, we need to open the DPRC
+ * in get_dprc_icid(). For child DPRCs, we do so using the
+ * parent DPRC's MC portal instead of the child DPRC's MC
+ * portal, in case the child DPRC is already opened with
+ * its own portal (e.g., the DPRC used by AIOP).
+ *
+ * NOTE: There cannot be more than one active open for a
+ * given MC object, using the same MC portal.
+ */
+ if (parent_mc_dev) {
+ /*
+ * device being added is a child DPRC device
+ */
+ mc_io2 = parent_mc_dev->mc_io;
+ } else {
+ /*
+ * device being added is the root DPRC device
+ */
+ if (!mc_io) {
+ error = -EINVAL;
+ goto error_cleanup_dev;
+ }
+
+ mc_io2 = mc_io;
+ }
+
+ error = get_dprc_icid(mc_io2, obj_desc->id, &mc_dev->icid);
+ if (error < 0)
+ goto error_cleanup_dev;
+ } else {
+ /*
+ * A non-DPRC object has to be a child of a DPRC, use the
+ * parent's ICID and interrupt domain.
+ */
+ mc_dev->icid = parent_mc_dev->icid;
+ mc_dev->dma_mask = FSL_MC_DEFAULT_DMA_MASK;
+ mc_dev->dev.dma_mask = &mc_dev->dma_mask;
+ dev_set_msi_domain(&mc_dev->dev,
+ dev_get_msi_domain(&parent_mc_dev->dev));
+ }
+
+ /*
+ * Get MMIO regions for the device from the MC:
+ *
+ * NOTE: the root DPRC is a special case as its MMIO region is
+ * obtained from the device tree
+ */
+ if (parent_mc_dev && obj_desc->region_count != 0) {
+ error = fsl_mc_device_get_mmio_regions(mc_dev,
+ parent_mc_dev);
+ if (error < 0)
+ goto error_cleanup_dev;
+ }
+
+ /* Objects are coherent, unless 'no shareability' flag set. */
+ if (!(obj_desc->flags & FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY))
+ arch_setup_dma_ops(&mc_dev->dev, 0, 0, NULL, true);
+
+ /*
+ * The device-specific probe callback will get invoked by device_add()
+ */
+ error = device_add(&mc_dev->dev);
+ if (error < 0) {
+ dev_err(parent_dev,
+ "device_add() failed for device %s: %d\n",
+ dev_name(&mc_dev->dev), error);
+ goto error_cleanup_dev;
+ }
+
+ dev_dbg(parent_dev, "added %s\n", dev_name(&mc_dev->dev));
+
+ *new_mc_dev = mc_dev;
+ return 0;
+
+error_cleanup_dev:
+ kfree(mc_dev->regions);
+ kfree(mc_bus);
+ kfree(mc_dev);
+
+ return error;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_device_add);
+
+/**
+ * fsl_mc_device_remove - Remove an fsl-mc device from being visible to
+ * Linux
+ *
+ * @mc_dev: Pointer to an fsl-mc device
+ */
+void fsl_mc_device_remove(struct fsl_mc_device *mc_dev)
+{
+ /*
+ * The device-specific remove callback will get invoked by device_del()
+ */
+ device_del(&mc_dev->dev);
+ put_device(&mc_dev->dev);
+}
+EXPORT_SYMBOL_GPL(fsl_mc_device_remove);
+
+static int parse_mc_ranges(struct device *dev,
+ int *paddr_cells,
+ int *mc_addr_cells,
+ int *mc_size_cells,
+ const __be32 **ranges_start)
+{
+ const __be32 *prop;
+ int range_tuple_cell_count;
+ int ranges_len;
+ int tuple_len;
+ struct device_node *mc_node = dev->of_node;
+
+ *ranges_start = of_get_property(mc_node, "ranges", &ranges_len);
+ if (!(*ranges_start) || !ranges_len) {
+ dev_warn(dev,
+ "missing or empty ranges property for device tree node '%s'\n",
+ mc_node->name);
+ return 0;
+ }
+
+ *paddr_cells = of_n_addr_cells(mc_node);
+
+ prop = of_get_property(mc_node, "#address-cells", NULL);
+ if (prop)
+ *mc_addr_cells = be32_to_cpup(prop);
+ else
+ *mc_addr_cells = *paddr_cells;
+
+ prop = of_get_property(mc_node, "#size-cells", NULL);
+ if (prop)
+ *mc_size_cells = be32_to_cpup(prop);
+ else
+ *mc_size_cells = of_n_size_cells(mc_node);
+
+ range_tuple_cell_count = *paddr_cells + *mc_addr_cells +
+ *mc_size_cells;
+
+ tuple_len = range_tuple_cell_count * sizeof(__be32);
+ if (ranges_len % tuple_len != 0) {
+ dev_err(dev, "malformed ranges property '%s'\n", mc_node->name);
+ return -EINVAL;
+ }
+
+ return ranges_len / tuple_len;
+}
+
+static int get_mc_addr_translation_ranges(struct device *dev,
+ struct fsl_mc_addr_translation_range
+ **ranges,
+ u8 *num_ranges)
+{
+ int ret;
+ int paddr_cells;
+ int mc_addr_cells;
+ int mc_size_cells;
+ int i;
+ const __be32 *ranges_start;
+ const __be32 *cell;
+
+ ret = parse_mc_ranges(dev,
+ &paddr_cells,
+ &mc_addr_cells,
+ &mc_size_cells,
+ &ranges_start);
+ if (ret < 0)
+ return ret;
+
+ *num_ranges = ret;
+ if (!ret) {
+ /*
+ * Missing or empty ranges property ("ranges;") for the
+ * 'fsl,qoriq-mc' node. In this case, identity mapping
+ * will be used.
+ */
+ *ranges = NULL;
+ return 0;
+ }
+
+ *ranges = devm_kcalloc(dev, *num_ranges,
+ sizeof(struct fsl_mc_addr_translation_range),
+ GFP_KERNEL);
+ if (!(*ranges))
+ return -ENOMEM;
+
+ cell = ranges_start;
+ for (i = 0; i < *num_ranges; ++i) {
+ struct fsl_mc_addr_translation_range *range = &(*ranges)[i];
+
+ range->mc_region_type = of_read_number(cell, 1);
+ range->start_mc_offset = of_read_number(cell + 1,
+ mc_addr_cells - 1);
+ cell += mc_addr_cells;
+ range->start_phys_addr = of_read_number(cell, paddr_cells);
+ cell += paddr_cells;
+ range->end_mc_offset = range->start_mc_offset +
+ of_read_number(cell, mc_size_cells);
+
+ cell += mc_size_cells;
+ }
+
+ return 0;
+}
+
+/**
+ * fsl_mc_bus_probe - callback invoked when the root MC bus is being
+ * added
+ */
+static int fsl_mc_bus_probe(struct platform_device *pdev)
+{
+ struct fsl_mc_obj_desc obj_desc;
+ int error;
+ struct fsl_mc *mc;
+ struct fsl_mc_device *mc_bus_dev = NULL;
+ struct fsl_mc_io *mc_io = NULL;
+ int container_id;
+ phys_addr_t mc_portal_phys_addr;
+ u32 mc_portal_size;
+ struct mc_version mc_version;
+ struct resource res;
+
+ mc = devm_kzalloc(&pdev->dev, sizeof(*mc), GFP_KERNEL);
+ if (!mc)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, mc);
+
+ /*
+ * Get physical address of MC portal for the root DPRC:
+ */
+ error = of_address_to_resource(pdev->dev.of_node, 0, &res);
+ if (error < 0) {
+ dev_err(&pdev->dev,
+ "of_address_to_resource() failed for %pOF\n",
+ pdev->dev.of_node);
+ return error;
+ }
+
+ mc_portal_phys_addr = res.start;
+ mc_portal_size = resource_size(&res);
+ error = fsl_create_mc_io(&pdev->dev, mc_portal_phys_addr,
+ mc_portal_size, NULL,
+ FSL_MC_IO_ATOMIC_CONTEXT_PORTAL, &mc_io);
+ if (error < 0)
+ return error;
+
+ error = mc_get_version(mc_io, 0, &mc_version);
+ if (error != 0) {
+ dev_err(&pdev->dev,
+ "mc_get_version() failed with error %d\n", error);
+ goto error_cleanup_mc_io;
+ }
+
+ dev_info(&pdev->dev, "MC firmware version: %u.%u.%u\n",
+ mc_version.major, mc_version.minor, mc_version.revision);
+
+ error = get_mc_addr_translation_ranges(&pdev->dev,
+ &mc->translation_ranges,
+ &mc->num_translation_ranges);
+ if (error < 0)
+ goto error_cleanup_mc_io;
+
+ error = dprc_get_container_id(mc_io, 0, &container_id);
+ if (error < 0) {
+ dev_err(&pdev->dev,
+ "dprc_get_container_id() failed: %d\n", error);
+ goto error_cleanup_mc_io;
+ }
+
+ memset(&obj_desc, 0, sizeof(struct fsl_mc_obj_desc));
+ error = dprc_get_api_version(mc_io, 0,
+ &obj_desc.ver_major,
+ &obj_desc.ver_minor);
+ if (error < 0)
+ goto error_cleanup_mc_io;
+
+ obj_desc.vendor = FSL_MC_VENDOR_FREESCALE;
+ strcpy(obj_desc.type, "dprc");
+ obj_desc.id = container_id;
+ obj_desc.irq_count = 1;
+ obj_desc.region_count = 0;
+
+ error = fsl_mc_device_add(&obj_desc, mc_io, &pdev->dev, &mc_bus_dev);
+ if (error < 0)
+ goto error_cleanup_mc_io;
+
+ mc->root_mc_bus_dev = mc_bus_dev;
+ return 0;
+
+error_cleanup_mc_io:
+ fsl_destroy_mc_io(mc_io);
+ return error;
+}
+
+/**
+ * fsl_mc_bus_remove - callback invoked when the root MC bus is being
+ * removed
+ */
+static int fsl_mc_bus_remove(struct platform_device *pdev)
+{
+ struct fsl_mc *mc = platform_get_drvdata(pdev);
+
+ if (!fsl_mc_is_root_dprc(&mc->root_mc_bus_dev->dev))
+ return -EINVAL;
+
+ fsl_mc_device_remove(mc->root_mc_bus_dev);
+
+ fsl_destroy_mc_io(mc->root_mc_bus_dev->mc_io);
+ mc->root_mc_bus_dev->mc_io = NULL;
+
+ return 0;
+}
+
+static const struct of_device_id fsl_mc_bus_match_table[] = {
+ {.compatible = "fsl,qoriq-mc",},
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, fsl_mc_bus_match_table);
+
+static struct platform_driver fsl_mc_bus_driver = {
+ .driver = {
+ .name = "fsl_mc_bus",
+ .pm = NULL,
+ .of_match_table = fsl_mc_bus_match_table,
+ },
+ .probe = fsl_mc_bus_probe,
+ .remove = fsl_mc_bus_remove,
+};
+
+static int __init fsl_mc_bus_driver_init(void)
+{
+ int error;
+
+ error = bus_register(&fsl_mc_bus_type);
+ if (error < 0) {
+ pr_err("bus type registration failed: %d\n", error);
+ goto error_cleanup_cache;
+ }
+
+ error = platform_driver_register(&fsl_mc_bus_driver);
+ if (error < 0) {
+ pr_err("platform_driver_register() failed: %d\n", error);
+ goto error_cleanup_bus;
+ }
+
+ error = dprc_driver_init();
+ if (error < 0)
+ goto error_cleanup_driver;
+
+ error = fsl_mc_allocator_driver_init();
+ if (error < 0)
+ goto error_cleanup_dprc_driver;
+
+ return 0;
+
+error_cleanup_dprc_driver:
+ dprc_driver_exit();
+
+error_cleanup_driver:
+ platform_driver_unregister(&fsl_mc_bus_driver);
+
+error_cleanup_bus:
+ bus_unregister(&fsl_mc_bus_type);
+
+error_cleanup_cache:
+ return error;
+}
+postcore_initcall(fsl_mc_bus_driver_init);
diff --git a/drivers/bus/fsl-mc/fsl-mc-msi.c b/drivers/bus/fsl-mc/fsl-mc-msi.c
new file mode 100644
index 0000000..ec35e25
--- /dev/null
+++ b/drivers/bus/fsl-mc/fsl-mc-msi.c
@@ -0,0 +1,285 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Freescale Management Complex (MC) bus driver MSI support
+ *
+ * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
+ * Author: German Rivera <[email protected]>
+ *
+ */
+
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/msi.h>
+
+#include "fsl-mc-private.h"
+
+#ifdef GENERIC_MSI_DOMAIN_OPS
+/*
+ * Generate a unique ID identifying the interrupt (only used within the MSI
+ * irqdomain. Combine the icid with the interrupt index.
+ */
+static irq_hw_number_t fsl_mc_domain_calc_hwirq(struct fsl_mc_device *dev,
+ struct msi_desc *desc)
+{
+ /*
+ * Make the base hwirq value for ICID*10000 so it is readable
+ * as a decimal value in /proc/interrupts.
+ */
+ return (irq_hw_number_t)(desc->fsl_mc.msi_index + (dev->icid * 10000));
+}
+
+static void fsl_mc_msi_set_desc(msi_alloc_info_t *arg,
+ struct msi_desc *desc)
+{
+ arg->desc = desc;
+ arg->hwirq = fsl_mc_domain_calc_hwirq(to_fsl_mc_device(desc->dev),
+ desc);
+}
+#else
+#define fsl_mc_msi_set_desc NULL
+#endif
+
+static void fsl_mc_msi_update_dom_ops(struct msi_domain_info *info)
+{
+ struct msi_domain_ops *ops = info->ops;
+
+ if (!ops)
+ return;
+
+ /*
+ * set_desc should not be set by the caller
+ */
+ if (!ops->set_desc)
+ ops->set_desc = fsl_mc_msi_set_desc;
+}
+
+static void __fsl_mc_msi_write_msg(struct fsl_mc_device *mc_bus_dev,
+ struct fsl_mc_device_irq *mc_dev_irq)
+{
+ int error;
+ struct fsl_mc_device *owner_mc_dev = mc_dev_irq->mc_dev;
+ struct msi_desc *msi_desc = mc_dev_irq->msi_desc;
+ struct dprc_irq_cfg irq_cfg;
+
+ /*
+ * msi_desc->msg.address is 0x0 when this function is invoked in
+ * the free_irq() code path. In this case, for the MC, we don't
+ * really need to "unprogram" the MSI, so we just return.
+ */
+ if (msi_desc->msg.address_lo == 0x0 && msi_desc->msg.address_hi == 0x0)
+ return;
+
+ if (!owner_mc_dev)
+ return;
+
+ irq_cfg.paddr = ((u64)msi_desc->msg.address_hi << 32) |
+ msi_desc->msg.address_lo;
+ irq_cfg.val = msi_desc->msg.data;
+ irq_cfg.irq_num = msi_desc->irq;
+
+ if (owner_mc_dev == mc_bus_dev) {
+ /*
+ * IRQ is for the mc_bus_dev's DPRC itself
+ */
+ error = dprc_set_irq(mc_bus_dev->mc_io,
+ MC_CMD_FLAG_INTR_DIS | MC_CMD_FLAG_PRI,
+ mc_bus_dev->mc_handle,
+ mc_dev_irq->dev_irq_index,
+ &irq_cfg);
+ if (error < 0) {
+ dev_err(&owner_mc_dev->dev,
+ "dprc_set_irq() failed: %d\n", error);
+ }
+ } else {
+ /*
+ * IRQ is for for a child device of mc_bus_dev
+ */
+ error = dprc_set_obj_irq(mc_bus_dev->mc_io,
+ MC_CMD_FLAG_INTR_DIS | MC_CMD_FLAG_PRI,
+ mc_bus_dev->mc_handle,
+ owner_mc_dev->obj_desc.type,
+ owner_mc_dev->obj_desc.id,
+ mc_dev_irq->dev_irq_index,
+ &irq_cfg);
+ if (error < 0) {
+ dev_err(&owner_mc_dev->dev,
+ "dprc_obj_set_irq() failed: %d\n", error);
+ }
+ }
+}
+
+/*
+ * NOTE: This function is invoked with interrupts disabled
+ */
+static void fsl_mc_msi_write_msg(struct irq_data *irq_data,
+ struct msi_msg *msg)
+{
+ struct msi_desc *msi_desc = irq_data_get_msi_desc(irq_data);
+ struct fsl_mc_device *mc_bus_dev = to_fsl_mc_device(msi_desc->dev);
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
+ struct fsl_mc_device_irq *mc_dev_irq =
+ &mc_bus->irq_resources[msi_desc->fsl_mc.msi_index];
+
+ msi_desc->msg = *msg;
+
+ /*
+ * Program the MSI (paddr, value) pair in the device:
+ */
+ __fsl_mc_msi_write_msg(mc_bus_dev, mc_dev_irq);
+}
+
+static void fsl_mc_msi_update_chip_ops(struct msi_domain_info *info)
+{
+ struct irq_chip *chip = info->chip;
+
+ if (!chip)
+ return;
+
+ /*
+ * irq_write_msi_msg should not be set by the caller
+ */
+ if (!chip->irq_write_msi_msg)
+ chip->irq_write_msi_msg = fsl_mc_msi_write_msg;
+}
+
+/**
+ * fsl_mc_msi_create_irq_domain - Create a fsl-mc MSI interrupt domain
+ * @np: Optional device-tree node of the interrupt controller
+ * @info: MSI domain info
+ * @parent: Parent irq domain
+ *
+ * Updates the domain and chip ops and creates a fsl-mc MSI
+ * interrupt domain.
+ *
+ * Returns:
+ * A domain pointer or NULL in case of failure.
+ */
+struct irq_domain *fsl_mc_msi_create_irq_domain(struct fwnode_handle *fwnode,
+ struct msi_domain_info *info,
+ struct irq_domain *parent)
+{
+ struct irq_domain *domain;
+
+ if (info->flags & MSI_FLAG_USE_DEF_DOM_OPS)
+ fsl_mc_msi_update_dom_ops(info);
+ if (info->flags & MSI_FLAG_USE_DEF_CHIP_OPS)
+ fsl_mc_msi_update_chip_ops(info);
+
+ domain = msi_create_irq_domain(fwnode, info, parent);
+ if (domain)
+ irq_domain_update_bus_token(domain, DOMAIN_BUS_FSL_MC_MSI);
+
+ return domain;
+}
+
+int fsl_mc_find_msi_domain(struct device *mc_platform_dev,
+ struct irq_domain **mc_msi_domain)
+{
+ struct irq_domain *msi_domain;
+ struct device_node *mc_of_node = mc_platform_dev->of_node;
+
+ msi_domain = of_msi_get_domain(mc_platform_dev, mc_of_node,
+ DOMAIN_BUS_FSL_MC_MSI);
+ if (!msi_domain) {
+ pr_err("Unable to find fsl-mc MSI domain for %pOF\n",
+ mc_of_node);
+
+ return -ENOENT;
+ }
+
+ *mc_msi_domain = msi_domain;
+ return 0;
+}
+
+static void fsl_mc_msi_free_descs(struct device *dev)
+{
+ struct msi_desc *desc, *tmp;
+
+ list_for_each_entry_safe(desc, tmp, dev_to_msi_list(dev), list) {
+ list_del(&desc->list);
+ free_msi_entry(desc);
+ }
+}
+
+static int fsl_mc_msi_alloc_descs(struct device *dev, unsigned int irq_count)
+
+{
+ unsigned int i;
+ int error;
+ struct msi_desc *msi_desc;
+
+ for (i = 0; i < irq_count; i++) {
+ msi_desc = alloc_msi_entry(dev, 1, NULL);
+ if (!msi_desc) {
+ dev_err(dev, "Failed to allocate msi entry\n");
+ error = -ENOMEM;
+ goto cleanup_msi_descs;
+ }
+
+ msi_desc->fsl_mc.msi_index = i;
+ INIT_LIST_HEAD(&msi_desc->list);
+ list_add_tail(&msi_desc->list, dev_to_msi_list(dev));
+ }
+
+ return 0;
+
+cleanup_msi_descs:
+ fsl_mc_msi_free_descs(dev);
+ return error;
+}
+
+int fsl_mc_msi_domain_alloc_irqs(struct device *dev,
+ unsigned int irq_count)
+{
+ struct irq_domain *msi_domain;
+ int error;
+
+ if (!list_empty(dev_to_msi_list(dev)))
+ return -EINVAL;
+
+ error = fsl_mc_msi_alloc_descs(dev, irq_count);
+ if (error < 0)
+ return error;
+
+ msi_domain = dev_get_msi_domain(dev);
+ if (!msi_domain) {
+ error = -EINVAL;
+ goto cleanup_msi_descs;
+ }
+
+ /*
+ * NOTE: Calling this function will trigger the invocation of the
+ * its_fsl_mc_msi_prepare() callback
+ */
+ error = msi_domain_alloc_irqs(msi_domain, dev, irq_count);
+
+ if (error) {
+ dev_err(dev, "Failed to allocate IRQs\n");
+ goto cleanup_msi_descs;
+ }
+
+ return 0;
+
+cleanup_msi_descs:
+ fsl_mc_msi_free_descs(dev);
+ return error;
+}
+
+void fsl_mc_msi_domain_free_irqs(struct device *dev)
+{
+ struct irq_domain *msi_domain;
+
+ msi_domain = dev_get_msi_domain(dev);
+ if (!msi_domain)
+ return;
+
+ msi_domain_free_irqs(msi_domain, dev);
+
+ if (list_empty(dev_to_msi_list(dev)))
+ return;
+
+ fsl_mc_msi_free_descs(dev);
+}
diff --git a/drivers/bus/fsl-mc/fsl-mc-private.h b/drivers/bus/fsl-mc/fsl-mc-private.h
new file mode 100644
index 0000000..bed990c
--- /dev/null
+++ b/drivers/bus/fsl-mc/fsl-mc-private.h
@@ -0,0 +1,475 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Freescale Management Complex (MC) bus private declarations
+ *
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ *
+ */
+#ifndef _FSL_MC_PRIVATE_H_
+#define _FSL_MC_PRIVATE_H_
+
+#include <linux/fsl/mc.h>
+#include <linux/mutex.h>
+
+/*
+ * Data Path Management Complex (DPMNG) General API
+ */
+
+/* DPMNG command versioning */
+#define DPMNG_CMD_BASE_VERSION 1
+#define DPMNG_CMD_ID_OFFSET 4
+
+#define DPMNG_CMD(id) (((id) << DPMNG_CMD_ID_OFFSET) | DPMNG_CMD_BASE_VERSION)
+
+/* DPMNG command IDs */
+#define DPMNG_CMDID_GET_VERSION DPMNG_CMD(0x831)
+
+struct dpmng_rsp_get_version {
+ __le32 revision;
+ __le32 version_major;
+ __le32 version_minor;
+};
+
+/*
+ * Data Path Management Command Portal (DPMCP) API
+ */
+
+/* Minimal supported DPMCP Version */
+#define DPMCP_MIN_VER_MAJOR 3
+#define DPMCP_MIN_VER_MINOR 0
+
+/* DPMCP command versioning */
+#define DPMCP_CMD_BASE_VERSION 1
+#define DPMCP_CMD_ID_OFFSET 4
+
+#define DPMCP_CMD(id) (((id) << DPMCP_CMD_ID_OFFSET) | DPMCP_CMD_BASE_VERSION)
+
+/* DPMCP command IDs */
+#define DPMCP_CMDID_CLOSE DPMCP_CMD(0x800)
+#define DPMCP_CMDID_OPEN DPMCP_CMD(0x80b)
+#define DPMCP_CMDID_RESET DPMCP_CMD(0x005)
+
+struct dpmcp_cmd_open {
+ __le32 dpmcp_id;
+};
+
+/*
+ * Initialization and runtime control APIs for DPMCP
+ */
+int dpmcp_open(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ int dpmcp_id,
+ u16 *token);
+
+int dpmcp_close(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token);
+
+int dpmcp_reset(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token);
+
+/*
+ * Data Path Resource Container (DPRC) API
+ */
+
+/* Minimal supported DPRC Version */
+#define DPRC_MIN_VER_MAJOR 6
+#define DPRC_MIN_VER_MINOR 0
+
+/* DPRC command versioning */
+#define DPRC_CMD_BASE_VERSION 1
+#define DPRC_CMD_ID_OFFSET 4
+
+#define DPRC_CMD(id) (((id) << DPRC_CMD_ID_OFFSET) | DPRC_CMD_BASE_VERSION)
+
+/* DPRC command IDs */
+#define DPRC_CMDID_CLOSE DPRC_CMD(0x800)
+#define DPRC_CMDID_OPEN DPRC_CMD(0x805)
+#define DPRC_CMDID_GET_API_VERSION DPRC_CMD(0xa05)
+
+#define DPRC_CMDID_GET_ATTR DPRC_CMD(0x004)
+
+#define DPRC_CMDID_SET_IRQ DPRC_CMD(0x010)
+#define DPRC_CMDID_SET_IRQ_ENABLE DPRC_CMD(0x012)
+#define DPRC_CMDID_SET_IRQ_MASK DPRC_CMD(0x014)
+#define DPRC_CMDID_GET_IRQ_STATUS DPRC_CMD(0x016)
+#define DPRC_CMDID_CLEAR_IRQ_STATUS DPRC_CMD(0x017)
+
+#define DPRC_CMDID_GET_CONT_ID DPRC_CMD(0x830)
+#define DPRC_CMDID_GET_OBJ_COUNT DPRC_CMD(0x159)
+#define DPRC_CMDID_GET_OBJ DPRC_CMD(0x15A)
+#define DPRC_CMDID_GET_OBJ_REG DPRC_CMD(0x15E)
+#define DPRC_CMDID_SET_OBJ_IRQ DPRC_CMD(0x15F)
+
+struct dprc_cmd_open {
+ __le32 container_id;
+};
+
+struct dprc_cmd_set_irq {
+ /* cmd word 0 */
+ __le32 irq_val;
+ u8 irq_index;
+ u8 pad[3];
+ /* cmd word 1 */
+ __le64 irq_addr;
+ /* cmd word 2 */
+ __le32 irq_num;
+};
+
+#define DPRC_ENABLE 0x1
+
+struct dprc_cmd_set_irq_enable {
+ u8 enable;
+ u8 pad[3];
+ u8 irq_index;
+};
+
+struct dprc_cmd_set_irq_mask {
+ __le32 mask;
+ u8 irq_index;
+};
+
+struct dprc_cmd_get_irq_status {
+ __le32 status;
+ u8 irq_index;
+};
+
+struct dprc_rsp_get_irq_status {
+ __le32 status;
+};
+
+struct dprc_cmd_clear_irq_status {
+ __le32 status;
+ u8 irq_index;
+};
+
+struct dprc_rsp_get_attributes {
+ /* response word 0 */
+ __le32 container_id;
+ __le16 icid;
+ __le16 pad;
+ /* response word 1 */
+ __le32 options;
+ __le32 portal_id;
+};
+
+struct dprc_rsp_get_obj_count {
+ __le32 pad;
+ __le32 obj_count;
+};
+
+struct dprc_cmd_get_obj {
+ __le32 obj_index;
+};
+
+struct dprc_rsp_get_obj {
+ /* response word 0 */
+ __le32 pad0;
+ __le32 id;
+ /* response word 1 */
+ __le16 vendor;
+ u8 irq_count;
+ u8 region_count;
+ __le32 state;
+ /* response word 2 */
+ __le16 version_major;
+ __le16 version_minor;
+ __le16 flags;
+ __le16 pad1;
+ /* response word 3-4 */
+ u8 type[16];
+ /* response word 5-6 */
+ u8 label[16];
+};
+
+struct dprc_cmd_get_obj_region {
+ /* cmd word 0 */
+ __le32 obj_id;
+ __le16 pad0;
+ u8 region_index;
+ u8 pad1;
+ /* cmd word 1-2 */
+ __le64 pad2[2];
+ /* cmd word 3-4 */
+ u8 obj_type[16];
+};
+
+struct dprc_rsp_get_obj_region {
+ /* response word 0 */
+ __le64 pad;
+ /* response word 1 */
+ __le64 base_addr;
+ /* response word 2 */
+ __le32 size;
+};
+
+struct dprc_cmd_set_obj_irq {
+ /* cmd word 0 */
+ __le32 irq_val;
+ u8 irq_index;
+ u8 pad[3];
+ /* cmd word 1 */
+ __le64 irq_addr;
+ /* cmd word 2 */
+ __le32 irq_num;
+ __le32 obj_id;
+ /* cmd word 3-4 */
+ u8 obj_type[16];
+};
+
+/*
+ * DPRC API for managing and querying DPAA resources
+ */
+int dprc_open(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ int container_id,
+ u16 *token);
+
+int dprc_close(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token);
+
+/* DPRC IRQ events */
+
+/* IRQ event - Indicates that a new object added to the container */
+#define DPRC_IRQ_EVENT_OBJ_ADDED 0x00000001
+/* IRQ event - Indicates that an object was removed from the container */
+#define DPRC_IRQ_EVENT_OBJ_REMOVED 0x00000002
+/*
+ * IRQ event - Indicates that one of the descendant containers that opened by
+ * this container is destroyed
+ */
+#define DPRC_IRQ_EVENT_CONTAINER_DESTROYED 0x00000010
+
+/*
+ * IRQ event - Indicates that on one of the container's opened object is
+ * destroyed
+ */
+#define DPRC_IRQ_EVENT_OBJ_DESTROYED 0x00000020
+
+/* Irq event - Indicates that object is created at the container */
+#define DPRC_IRQ_EVENT_OBJ_CREATED 0x00000040
+
+/**
+ * struct dprc_irq_cfg - IRQ configuration
+ * @paddr: Address that must be written to signal a message-based interrupt
+ * @val: Value to write into irq_addr address
+ * @irq_num: A user defined number associated with this IRQ
+ */
+struct dprc_irq_cfg {
+ phys_addr_t paddr;
+ u32 val;
+ int irq_num;
+};
+
+int dprc_set_irq(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ u8 irq_index,
+ struct dprc_irq_cfg *irq_cfg);
+
+int dprc_set_irq_enable(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ u8 irq_index,
+ u8 en);
+
+int dprc_set_irq_mask(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ u8 irq_index,
+ u32 mask);
+
+int dprc_get_irq_status(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ u8 irq_index,
+ u32 *status);
+
+int dprc_clear_irq_status(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ u8 irq_index,
+ u32 status);
+
+/**
+ * struct dprc_attributes - Container attributes
+ * @container_id: Container's ID
+ * @icid: Container's ICID
+ * @portal_id: Container's portal ID
+ * @options: Container's options as set at container's creation
+ */
+struct dprc_attributes {
+ int container_id;
+ u16 icid;
+ int portal_id;
+ u64 options;
+};
+
+int dprc_get_attributes(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ struct dprc_attributes *attributes);
+
+int dprc_get_obj_count(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ int *obj_count);
+
+int dprc_get_obj(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ int obj_index,
+ struct fsl_mc_obj_desc *obj_desc);
+
+int dprc_set_obj_irq(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ char *obj_type,
+ int obj_id,
+ u8 irq_index,
+ struct dprc_irq_cfg *irq_cfg);
+
+/* Region flags */
+/* Cacheable - Indicates that region should be mapped as cacheable */
+#define DPRC_REGION_CACHEABLE 0x00000001
+
+/**
+ * enum dprc_region_type - Region type
+ * @DPRC_REGION_TYPE_MC_PORTAL: MC portal region
+ * @DPRC_REGION_TYPE_QBMAN_PORTAL: Qbman portal region
+ */
+enum dprc_region_type {
+ DPRC_REGION_TYPE_MC_PORTAL,
+ DPRC_REGION_TYPE_QBMAN_PORTAL
+};
+
+/**
+ * struct dprc_region_desc - Mappable region descriptor
+ * @base_offset: Region offset from region's base address.
+ * For DPMCP and DPRC objects, region base is offset from SoC MC portals
+ * base address; For DPIO, region base is offset from SoC QMan portals
+ * base address
+ * @size: Region size (in bytes)
+ * @flags: Region attributes
+ * @type: Portal region type
+ */
+struct dprc_region_desc {
+ u32 base_offset;
+ u32 size;
+ u32 flags;
+ enum dprc_region_type type;
+};
+
+int dprc_get_obj_region(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ char *obj_type,
+ int obj_id,
+ u8 region_index,
+ struct dprc_region_desc *region_desc);
+
+int dprc_get_api_version(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 *major_ver,
+ u16 *minor_ver);
+
+int dprc_get_container_id(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ int *container_id);
+
+/**
+ * Maximum number of total IRQs that can be pre-allocated for an MC bus'
+ * IRQ pool
+ */
+#define FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS 256
+
+/**
+ * struct fsl_mc_resource_pool - Pool of MC resources of a given
+ * type
+ * @type: type of resources in the pool
+ * @max_count: maximum number of resources in the pool
+ * @free_count: number of free resources in the pool
+ * @mutex: mutex to serialize access to the pool's free list
+ * @free_list: anchor node of list of free resources in the pool
+ * @mc_bus: pointer to the MC bus that owns this resource pool
+ */
+struct fsl_mc_resource_pool {
+ enum fsl_mc_pool_type type;
+ int max_count;
+ int free_count;
+ struct mutex mutex; /* serializes access to free_list */
+ struct list_head free_list;
+ struct fsl_mc_bus *mc_bus;
+};
+
+/**
+ * struct fsl_mc_bus - logical bus that corresponds to a physical DPRC
+ * @mc_dev: fsl-mc device for the bus device itself.
+ * @resource_pools: array of resource pools (one pool per resource type)
+ * for this MC bus. These resources represent allocatable entities
+ * from the physical DPRC.
+ * @irq_resources: Pointer to array of IRQ objects for the IRQ pool
+ * @scan_mutex: Serializes bus scanning
+ * @dprc_attr: DPRC attributes
+ */
+struct fsl_mc_bus {
+ struct fsl_mc_device mc_dev;
+ struct fsl_mc_resource_pool resource_pools[FSL_MC_NUM_POOL_TYPES];
+ struct fsl_mc_device_irq *irq_resources;
+ struct mutex scan_mutex; /* serializes bus scanning */
+ struct dprc_attributes dprc_attr;
+};
+
+#define to_fsl_mc_bus(_mc_dev) \
+ container_of(_mc_dev, struct fsl_mc_bus, mc_dev)
+
+int __must_check fsl_mc_device_add(struct fsl_mc_obj_desc *obj_desc,
+ struct fsl_mc_io *mc_io,
+ struct device *parent_dev,
+ struct fsl_mc_device **new_mc_dev);
+
+void fsl_mc_device_remove(struct fsl_mc_device *mc_dev);
+
+int __init dprc_driver_init(void);
+
+void dprc_driver_exit(void);
+
+int __init fsl_mc_allocator_driver_init(void);
+
+void fsl_mc_init_all_resource_pools(struct fsl_mc_device *mc_bus_dev);
+
+void fsl_mc_cleanup_all_resource_pools(struct fsl_mc_device *mc_bus_dev);
+
+int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus,
+ enum fsl_mc_pool_type pool_type,
+ struct fsl_mc_resource
+ **new_resource);
+
+void fsl_mc_resource_free(struct fsl_mc_resource *resource);
+
+int fsl_mc_msi_domain_alloc_irqs(struct device *dev,
+ unsigned int irq_count);
+
+void fsl_mc_msi_domain_free_irqs(struct device *dev);
+
+int fsl_mc_find_msi_domain(struct device *mc_platform_dev,
+ struct irq_domain **mc_msi_domain);
+
+int fsl_mc_populate_irq_pool(struct fsl_mc_bus *mc_bus,
+ unsigned int irq_count);
+
+void fsl_mc_cleanup_irq_pool(struct fsl_mc_bus *mc_bus);
+
+int __must_check fsl_create_mc_io(struct device *dev,
+ phys_addr_t mc_portal_phys_addr,
+ u32 mc_portal_size,
+ struct fsl_mc_device *dpmcp_dev,
+ u32 flags, struct fsl_mc_io **new_mc_io);
+
+void fsl_destroy_mc_io(struct fsl_mc_io *mc_io);
+
+bool fsl_mc_is_root_dprc(struct device *dev);
+
+#endif /* _FSL_MC_PRIVATE_H_ */
diff --git a/drivers/bus/fsl-mc/mc-io.c b/drivers/bus/fsl-mc/mc-io.c
new file mode 100644
index 0000000..7226cfc
--- /dev/null
+++ b/drivers/bus/fsl-mc/mc-io.c
@@ -0,0 +1,268 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
+ *
+ */
+
+#include <linux/io.h>
+#include <linux/fsl/mc.h>
+
+#include "fsl-mc-private.h"
+
+static int fsl_mc_io_set_dpmcp(struct fsl_mc_io *mc_io,
+ struct fsl_mc_device *dpmcp_dev)
+{
+ int error;
+
+ if (mc_io->dpmcp_dev)
+ return -EINVAL;
+
+ if (dpmcp_dev->mc_io)
+ return -EINVAL;
+
+ error = dpmcp_open(mc_io,
+ 0,
+ dpmcp_dev->obj_desc.id,
+ &dpmcp_dev->mc_handle);
+ if (error < 0)
+ return error;
+
+ mc_io->dpmcp_dev = dpmcp_dev;
+ dpmcp_dev->mc_io = mc_io;
+ return 0;
+}
+
+static void fsl_mc_io_unset_dpmcp(struct fsl_mc_io *mc_io)
+{
+ int error;
+ struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
+
+ error = dpmcp_close(mc_io,
+ 0,
+ dpmcp_dev->mc_handle);
+ if (error < 0) {
+ dev_err(&dpmcp_dev->dev, "dpmcp_close() failed: %d\n",
+ error);
+ }
+
+ mc_io->dpmcp_dev = NULL;
+ dpmcp_dev->mc_io = NULL;
+}
+
+/**
+ * Creates an MC I/O object
+ *
+ * @dev: device to be associated with the MC I/O object
+ * @mc_portal_phys_addr: physical address of the MC portal to use
+ * @mc_portal_size: size in bytes of the MC portal
+ * @dpmcp-dev: Pointer to the DPMCP object associated with this MC I/O
+ * object or NULL if none.
+ * @flags: flags for the new MC I/O object
+ * @new_mc_io: Area to return pointer to newly created MC I/O object
+ *
+ * Returns '0' on Success; Error code otherwise.
+ */
+int __must_check fsl_create_mc_io(struct device *dev,
+ phys_addr_t mc_portal_phys_addr,
+ u32 mc_portal_size,
+ struct fsl_mc_device *dpmcp_dev,
+ u32 flags, struct fsl_mc_io **new_mc_io)
+{
+ int error;
+ struct fsl_mc_io *mc_io;
+ void __iomem *mc_portal_virt_addr;
+ struct resource *res;
+
+ mc_io = devm_kzalloc(dev, sizeof(*mc_io), GFP_KERNEL);
+ if (!mc_io)
+ return -ENOMEM;
+
+ mc_io->dev = dev;
+ mc_io->flags = flags;
+ mc_io->portal_phys_addr = mc_portal_phys_addr;
+ mc_io->portal_size = mc_portal_size;
+ if (flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
+ spin_lock_init(&mc_io->spinlock);
+ else
+ mutex_init(&mc_io->mutex);
+
+ res = devm_request_mem_region(dev,
+ mc_portal_phys_addr,
+ mc_portal_size,
+ "mc_portal");
+ if (!res) {
+ dev_err(dev,
+ "devm_request_mem_region failed for MC portal %pa\n",
+ &mc_portal_phys_addr);
+ return -EBUSY;
+ }
+
+ mc_portal_virt_addr = devm_ioremap_nocache(dev,
+ mc_portal_phys_addr,
+ mc_portal_size);
+ if (!mc_portal_virt_addr) {
+ dev_err(dev,
+ "devm_ioremap_nocache failed for MC portal %pa\n",
+ &mc_portal_phys_addr);
+ return -ENXIO;
+ }
+
+ mc_io->portal_virt_addr = mc_portal_virt_addr;
+ if (dpmcp_dev) {
+ error = fsl_mc_io_set_dpmcp(mc_io, dpmcp_dev);
+ if (error < 0)
+ goto error_destroy_mc_io;
+ }
+
+ *new_mc_io = mc_io;
+ return 0;
+
+error_destroy_mc_io:
+ fsl_destroy_mc_io(mc_io);
+ return error;
+}
+
+/**
+ * Destroys an MC I/O object
+ *
+ * @mc_io: MC I/O object to destroy
+ */
+void fsl_destroy_mc_io(struct fsl_mc_io *mc_io)
+{
+ struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
+
+ if (dpmcp_dev)
+ fsl_mc_io_unset_dpmcp(mc_io);
+
+ devm_iounmap(mc_io->dev, mc_io->portal_virt_addr);
+ devm_release_mem_region(mc_io->dev,
+ mc_io->portal_phys_addr,
+ mc_io->portal_size);
+
+ mc_io->portal_virt_addr = NULL;
+ devm_kfree(mc_io->dev, mc_io);
+}
+
+/**
+ * fsl_mc_portal_allocate - Allocates an MC portal
+ *
+ * @mc_dev: MC device for which the MC portal is to be allocated
+ * @mc_io_flags: Flags for the fsl_mc_io object that wraps the allocated
+ * MC portal.
+ * @new_mc_io: Pointer to area where the pointer to the fsl_mc_io object
+ * that wraps the allocated MC portal is to be returned
+ *
+ * This function allocates an MC portal from the device's parent DPRC,
+ * from the corresponding MC bus' pool of MC portals and wraps
+ * it in a new fsl_mc_io object. If 'mc_dev' is a DPRC itself, the
+ * portal is allocated from its own MC bus.
+ */
+int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
+ u16 mc_io_flags,
+ struct fsl_mc_io **new_mc_io)
+{
+ struct fsl_mc_device *mc_bus_dev;
+ struct fsl_mc_bus *mc_bus;
+ phys_addr_t mc_portal_phys_addr;
+ size_t mc_portal_size;
+ struct fsl_mc_device *dpmcp_dev;
+ int error = -EINVAL;
+ struct fsl_mc_resource *resource = NULL;
+ struct fsl_mc_io *mc_io = NULL;
+
+ if (mc_dev->flags & FSL_MC_IS_DPRC) {
+ mc_bus_dev = mc_dev;
+ } else {
+ if (!dev_is_fsl_mc(mc_dev->dev.parent))
+ return error;
+
+ mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
+ }
+
+ mc_bus = to_fsl_mc_bus(mc_bus_dev);
+ *new_mc_io = NULL;
+ error = fsl_mc_resource_allocate(mc_bus, FSL_MC_POOL_DPMCP, &resource);
+ if (error < 0)
+ return error;
+
+ error = -EINVAL;
+ dpmcp_dev = resource->data;
+
+ if (dpmcp_dev->obj_desc.ver_major < DPMCP_MIN_VER_MAJOR ||
+ (dpmcp_dev->obj_desc.ver_major == DPMCP_MIN_VER_MAJOR &&
+ dpmcp_dev->obj_desc.ver_minor < DPMCP_MIN_VER_MINOR)) {
+ dev_err(&dpmcp_dev->dev,
+ "ERROR: Version %d.%d of DPMCP not supported.\n",
+ dpmcp_dev->obj_desc.ver_major,
+ dpmcp_dev->obj_desc.ver_minor);
+ error = -ENOTSUPP;
+ goto error_cleanup_resource;
+ }
+
+ mc_portal_phys_addr = dpmcp_dev->regions[0].start;
+ mc_portal_size = resource_size(dpmcp_dev->regions);
+
+ error = fsl_create_mc_io(&mc_bus_dev->dev,
+ mc_portal_phys_addr,
+ mc_portal_size, dpmcp_dev,
+ mc_io_flags, &mc_io);
+ if (error < 0)
+ goto error_cleanup_resource;
+
+ *new_mc_io = mc_io;
+ return 0;
+
+error_cleanup_resource:
+ fsl_mc_resource_free(resource);
+ return error;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_portal_allocate);
+
+/**
+ * fsl_mc_portal_free - Returns an MC portal to the pool of free MC portals
+ * of a given MC bus
+ *
+ * @mc_io: Pointer to the fsl_mc_io object that wraps the MC portal to free
+ */
+void fsl_mc_portal_free(struct fsl_mc_io *mc_io)
+{
+ struct fsl_mc_device *dpmcp_dev;
+ struct fsl_mc_resource *resource;
+
+ /*
+ * Every mc_io obtained by calling fsl_mc_portal_allocate() is supposed
+ * to have a DPMCP object associated with.
+ */
+ dpmcp_dev = mc_io->dpmcp_dev;
+
+ resource = dpmcp_dev->resource;
+ if (!resource || resource->type != FSL_MC_POOL_DPMCP)
+ return;
+
+ if (resource->data != dpmcp_dev)
+ return;
+
+ fsl_destroy_mc_io(mc_io);
+ fsl_mc_resource_free(resource);
+}
+EXPORT_SYMBOL_GPL(fsl_mc_portal_free);
+
+/**
+ * fsl_mc_portal_reset - Resets the dpmcp object for a given fsl_mc_io object
+ *
+ * @mc_io: Pointer to the fsl_mc_io object that wraps the MC portal to free
+ */
+int fsl_mc_portal_reset(struct fsl_mc_io *mc_io)
+{
+ int error;
+ struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
+
+ error = dpmcp_reset(mc_io, 0, dpmcp_dev->mc_handle);
+ if (error < 0) {
+ dev_err(&dpmcp_dev->dev, "dpmcp_reset() failed: %d\n", error);
+ return error;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_portal_reset);
diff --git a/drivers/bus/fsl-mc/mc-sys.c b/drivers/bus/fsl-mc/mc-sys.c
new file mode 100644
index 0000000..bd03f15
--- /dev/null
+++ b/drivers/bus/fsl-mc/mc-sys.c
@@ -0,0 +1,296 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
+ *
+ * I/O services to send MC commands to the MC hardware
+ *
+ */
+
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/io-64-nonatomic-hi-lo.h>
+#include <linux/fsl/mc.h>
+
+#include "fsl-mc-private.h"
+
+/**
+ * Timeout in milliseconds to wait for the completion of an MC command
+ */
+#define MC_CMD_COMPLETION_TIMEOUT_MS 500
+
+/*
+ * usleep_range() min and max values used to throttle down polling
+ * iterations while waiting for MC command completion
+ */
+#define MC_CMD_COMPLETION_POLLING_MIN_SLEEP_USECS 10
+#define MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS 500
+
+static enum mc_cmd_status mc_cmd_hdr_read_status(struct mc_command *cmd)
+{
+ struct mc_cmd_header *hdr = (struct mc_cmd_header *)&cmd->header;
+
+ return (enum mc_cmd_status)hdr->status;
+}
+
+static u16 mc_cmd_hdr_read_cmdid(struct mc_command *cmd)
+{
+ struct mc_cmd_header *hdr = (struct mc_cmd_header *)&cmd->header;
+ u16 cmd_id = le16_to_cpu(hdr->cmd_id);
+
+ return cmd_id;
+}
+
+static int mc_status_to_error(enum mc_cmd_status status)
+{
+ static const int mc_status_to_error_map[] = {
+ [MC_CMD_STATUS_OK] = 0,
+ [MC_CMD_STATUS_AUTH_ERR] = -EACCES,
+ [MC_CMD_STATUS_NO_PRIVILEGE] = -EPERM,
+ [MC_CMD_STATUS_DMA_ERR] = -EIO,
+ [MC_CMD_STATUS_CONFIG_ERR] = -ENXIO,
+ [MC_CMD_STATUS_TIMEOUT] = -ETIMEDOUT,
+ [MC_CMD_STATUS_NO_RESOURCE] = -ENAVAIL,
+ [MC_CMD_STATUS_NO_MEMORY] = -ENOMEM,
+ [MC_CMD_STATUS_BUSY] = -EBUSY,
+ [MC_CMD_STATUS_UNSUPPORTED_OP] = -ENOTSUPP,
+ [MC_CMD_STATUS_INVALID_STATE] = -ENODEV,
+ };
+
+ if ((u32)status >= ARRAY_SIZE(mc_status_to_error_map))
+ return -EINVAL;
+
+ return mc_status_to_error_map[status];
+}
+
+static const char *mc_status_to_string(enum mc_cmd_status status)
+{
+ static const char *const status_strings[] = {
+ [MC_CMD_STATUS_OK] = "Command completed successfully",
+ [MC_CMD_STATUS_READY] = "Command ready to be processed",
+ [MC_CMD_STATUS_AUTH_ERR] = "Authentication error",
+ [MC_CMD_STATUS_NO_PRIVILEGE] = "No privilege",
+ [MC_CMD_STATUS_DMA_ERR] = "DMA or I/O error",
+ [MC_CMD_STATUS_CONFIG_ERR] = "Configuration error",
+ [MC_CMD_STATUS_TIMEOUT] = "Operation timed out",
+ [MC_CMD_STATUS_NO_RESOURCE] = "No resources",
+ [MC_CMD_STATUS_NO_MEMORY] = "No memory available",
+ [MC_CMD_STATUS_BUSY] = "Device is busy",
+ [MC_CMD_STATUS_UNSUPPORTED_OP] = "Unsupported operation",
+ [MC_CMD_STATUS_INVALID_STATE] = "Invalid state"
+ };
+
+ if ((unsigned int)status >= ARRAY_SIZE(status_strings))
+ return "Unknown MC error";
+
+ return status_strings[status];
+}
+
+/**
+ * mc_write_command - writes a command to a Management Complex (MC) portal
+ *
+ * @portal: pointer to an MC portal
+ * @cmd: pointer to a filled command
+ */
+static inline void mc_write_command(struct mc_command __iomem *portal,
+ struct mc_command *cmd)
+{
+ int i;
+
+ /* copy command parameters into the portal */
+ for (i = 0; i < MC_CMD_NUM_OF_PARAMS; i++)
+ /*
+ * Data is already in the expected LE byte-order. Do an
+ * extra LE -> CPU conversion so that the CPU -> LE done in
+ * the device io write api puts it back in the right order.
+ */
+ writeq_relaxed(le64_to_cpu(cmd->params[i]), &portal->params[i]);
+
+ /* submit the command by writing the header */
+ writeq(le64_to_cpu(cmd->header), &portal->header);
+}
+
+/**
+ * mc_read_response - reads the response for the last MC command from a
+ * Management Complex (MC) portal
+ *
+ * @portal: pointer to an MC portal
+ * @resp: pointer to command response buffer
+ *
+ * Returns MC_CMD_STATUS_OK on Success; Error code otherwise.
+ */
+static inline enum mc_cmd_status mc_read_response(struct mc_command __iomem *
+ portal,
+ struct mc_command *resp)
+{
+ int i;
+ enum mc_cmd_status status;
+
+ /* Copy command response header from MC portal: */
+ resp->header = cpu_to_le64(readq_relaxed(&portal->header));
+ status = mc_cmd_hdr_read_status(resp);
+ if (status != MC_CMD_STATUS_OK)
+ return status;
+
+ /* Copy command response data from MC portal: */
+ for (i = 0; i < MC_CMD_NUM_OF_PARAMS; i++)
+ /*
+ * Data is expected to be in LE byte-order. Do an
+ * extra CPU -> LE to revert the LE -> CPU done in
+ * the device io read api.
+ */
+ resp->params[i] =
+ cpu_to_le64(readq_relaxed(&portal->params[i]));
+
+ return status;
+}
+
+/**
+ * Waits for the completion of an MC command doing preemptible polling.
+ * uslepp_range() is called between polling iterations.
+ *
+ * @mc_io: MC I/O object to be used
+ * @cmd: command buffer to receive MC response
+ * @mc_status: MC command completion status
+ */
+static int mc_polling_wait_preemptible(struct fsl_mc_io *mc_io,
+ struct mc_command *cmd,
+ enum mc_cmd_status *mc_status)
+{
+ enum mc_cmd_status status;
+ unsigned long jiffies_until_timeout =
+ jiffies + msecs_to_jiffies(MC_CMD_COMPLETION_TIMEOUT_MS);
+
+ /*
+ * Wait for response from the MC hardware:
+ */
+ for (;;) {
+ status = mc_read_response(mc_io->portal_virt_addr, cmd);
+ if (status != MC_CMD_STATUS_READY)
+ break;
+
+ /*
+ * TODO: When MC command completion interrupts are supported
+ * call wait function here instead of usleep_range()
+ */
+ usleep_range(MC_CMD_COMPLETION_POLLING_MIN_SLEEP_USECS,
+ MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS);
+
+ if (time_after_eq(jiffies, jiffies_until_timeout)) {
+ dev_dbg(mc_io->dev,
+ "MC command timed out (portal: %pa, dprc handle: %#x, command: %#x)\n",
+ &mc_io->portal_phys_addr,
+ (unsigned int)mc_cmd_hdr_read_token(cmd),
+ (unsigned int)mc_cmd_hdr_read_cmdid(cmd));
+
+ return -ETIMEDOUT;
+ }
+ }
+
+ *mc_status = status;
+ return 0;
+}
+
+/**
+ * Waits for the completion of an MC command doing atomic polling.
+ * udelay() is called between polling iterations.
+ *
+ * @mc_io: MC I/O object to be used
+ * @cmd: command buffer to receive MC response
+ * @mc_status: MC command completion status
+ */
+static int mc_polling_wait_atomic(struct fsl_mc_io *mc_io,
+ struct mc_command *cmd,
+ enum mc_cmd_status *mc_status)
+{
+ enum mc_cmd_status status;
+ unsigned long timeout_usecs = MC_CMD_COMPLETION_TIMEOUT_MS * 1000;
+
+ BUILD_BUG_ON((MC_CMD_COMPLETION_TIMEOUT_MS * 1000) %
+ MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS != 0);
+
+ for (;;) {
+ status = mc_read_response(mc_io->portal_virt_addr, cmd);
+ if (status != MC_CMD_STATUS_READY)
+ break;
+
+ udelay(MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS);
+ timeout_usecs -= MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS;
+ if (timeout_usecs == 0) {
+ dev_dbg(mc_io->dev,
+ "MC command timed out (portal: %pa, dprc handle: %#x, command: %#x)\n",
+ &mc_io->portal_phys_addr,
+ (unsigned int)mc_cmd_hdr_read_token(cmd),
+ (unsigned int)mc_cmd_hdr_read_cmdid(cmd));
+
+ return -ETIMEDOUT;
+ }
+ }
+
+ *mc_status = status;
+ return 0;
+}
+
+/**
+ * Sends a command to the MC device using the given MC I/O object
+ *
+ * @mc_io: MC I/O object to be used
+ * @cmd: command to be sent
+ *
+ * Returns '0' on Success; Error code otherwise.
+ */
+int mc_send_command(struct fsl_mc_io *mc_io, struct mc_command *cmd)
+{
+ int error;
+ enum mc_cmd_status status;
+ unsigned long irq_flags = 0;
+
+ if (in_irq() && !(mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL))
+ return -EINVAL;
+
+ if (mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
+ spin_lock_irqsave(&mc_io->spinlock, irq_flags);
+ else
+ mutex_lock(&mc_io->mutex);
+
+ /*
+ * Send command to the MC hardware:
+ */
+ mc_write_command(mc_io->portal_virt_addr, cmd);
+
+ /*
+ * Wait for response from the MC hardware:
+ */
+ if (!(mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL))
+ error = mc_polling_wait_preemptible(mc_io, cmd, &status);
+ else
+ error = mc_polling_wait_atomic(mc_io, cmd, &status);
+
+ if (error < 0)
+ goto common_exit;
+
+ if (status != MC_CMD_STATUS_OK) {
+ dev_dbg(mc_io->dev,
+ "MC command failed: portal: %pa, dprc handle: %#x, command: %#x, status: %s (%#x)\n",
+ &mc_io->portal_phys_addr,
+ (unsigned int)mc_cmd_hdr_read_token(cmd),
+ (unsigned int)mc_cmd_hdr_read_cmdid(cmd),
+ mc_status_to_string(status),
+ (unsigned int)status);
+
+ error = mc_status_to_error(status);
+ goto common_exit;
+ }
+
+ error = 0;
+common_exit:
+ if (mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
+ spin_unlock_irqrestore(&mc_io->spinlock, irq_flags);
+ else
+ mutex_unlock(&mc_io->mutex);
+
+ return error;
+}
+EXPORT_SYMBOL_GPL(mc_send_command);
diff --git a/drivers/staging/fsl-dpaa2/ethernet/README b/drivers/staging/fsl-dpaa2/ethernet/README
index 410952e..03bf90e 100644
--- a/drivers/staging/fsl-dpaa2/ethernet/README
+++ b/drivers/staging/fsl-dpaa2/ethernet/README
@@ -36,7 +36,7 @@ are treated as internal resources of other objects.
For a more detailed description of the DPAA2 architecture and its object
abstractions see:
- drivers/staging/fsl-mc/README.txt
+ Documentation/networking/dpaa2/overview.rst
Each Linux net device is built on top of a Datapath Network Interface (DPNI)
object and uses Buffer Pools (DPBPs), I/O Portals (DPIOs) and Concentrators
diff --git a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
index 2817e67..b519fee 100644
--- a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
+++ b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
@@ -39,7 +39,7 @@
#include <linux/kthread.h>
#include <linux/iommu.h>
-#include "../../fsl-mc/include/mc.h"
+#include <linux/fsl/mc.h>
#include "dpaa2-eth.h"
/* CREATE_TRACE_POINTS only needs to be defined once. Other dpa files
diff --git a/drivers/staging/fsl-dpaa2/ethernet/dpni.c b/drivers/staging/fsl-dpaa2/ethernet/dpni.c
index e8be761..b16ff5c 100644
--- a/drivers/staging/fsl-dpaa2/ethernet/dpni.c
+++ b/drivers/staging/fsl-dpaa2/ethernet/dpni.c
@@ -32,7 +32,7 @@
*/
#include <linux/kernel.h>
#include <linux/errno.h>
-#include "../../fsl-mc/include/mc.h"
+#include <linux/fsl/mc.h>
#include "dpni.h"
#include "dpni-cmd.h"
diff --git a/drivers/staging/fsl-mc/TODO b/drivers/staging/fsl-mc/TODO
deleted file mode 100644
index 54a8bc6..0000000
--- a/drivers/staging/fsl-mc/TODO
+++ /dev/null
@@ -1,18 +0,0 @@
-* Add at least one device driver for a DPAA2 object (child device of the
- fsl-mc bus). Most likely candidate for this is adding DPAA2 Ethernet
- driver support, which depends on drivers for several objects: DPNI,
- DPIO, DPMAC. Other pre-requisites include:
-
- * MC firmware uprev. The MC firmware upon which the fsl-mc
- bus driver and DPAA2 object drivers are based is continuing
- to evolve, so minor updates are needed to keep in sync with binary
- interface changes to the MC.
-
-* Cleanup
-
-Please send any patches to Greg Kroah-Hartman <[email protected]>,
[email protected], [email protected],
[email protected]
-
-[1] https://lkml.org/lkml/2015/7/9/93
-[2] https://lkml.org/lkml/2015/7/7/712
diff --git a/drivers/staging/fsl-mc/bus/Kconfig b/drivers/staging/fsl-mc/bus/Kconfig
index 1f91000..5f4115d 100644
--- a/drivers/staging/fsl-mc/bus/Kconfig
+++ b/drivers/staging/fsl-mc/bus/Kconfig
@@ -5,16 +5,6 @@
# Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
#
-config FSL_MC_BUS
- bool "QorIQ DPAA2 fsl-mc bus driver"
- depends on OF && (ARCH_LAYERSCAPE || (COMPILE_TEST && (ARM || ARM64 || X86 || PPC)))
- select GENERIC_MSI_IRQ_DOMAIN
- help
- Driver to enable the bus infrastructure for the QorIQ DPAA2
- architecture. The fsl-mc bus driver handles discovery of
- DPAA2 objects (which are represented as Linux devices) and
- binding objects to drivers.
-
config FSL_MC_DPIO
tristate "QorIQ DPAA2 DPIO driver"
depends on FSL_MC_BUS && ARCH_LAYERSCAPE
diff --git a/drivers/staging/fsl-mc/bus/Makefile b/drivers/staging/fsl-mc/bus/Makefile
index 29059db..18b1b5f 100644
--- a/drivers/staging/fsl-mc/bus/Makefile
+++ b/drivers/staging/fsl-mc/bus/Makefile
@@ -4,19 +4,9 @@
#
# Copyright (C) 2014 Freescale Semiconductor, Inc.
#
-obj-$(CONFIG_FSL_MC_BUS) += mc-bus-driver.o
-
-mc-bus-driver-objs := fsl-mc-bus.o \
- mc-sys.o \
- mc-io.o \
- dprc.o \
- dprc-driver.o \
- fsl-mc-allocator.o \
- fsl-mc-msi.o \
- irq-gic-v3-its-fsl-mc-msi.o \
- dpmcp.o \
- dpbp.o \
- dpcon.o
+obj-$(CONFIG_FSL_MC_BUS) += irq-gic-v3-its-fsl-mc-msi.o \
+ dpbp.o \
+ dpcon.o
# MC DPIO driver
obj-$(CONFIG_FSL_MC_DPIO) += dpio/
diff --git a/drivers/staging/fsl-mc/bus/dpbp.c b/drivers/staging/fsl-mc/bus/dpbp.c
index a4df846..c0addaa 100644
--- a/drivers/staging/fsl-mc/bus/dpbp.c
+++ b/drivers/staging/fsl-mc/bus/dpbp.c
@@ -4,7 +4,7 @@
*
*/
#include <linux/kernel.h>
-#include "../include/mc.h"
+#include <linux/fsl/mc.h>
#include "../include/dpbp.h"
#include "dpbp-cmd.h"
diff --git a/drivers/staging/fsl-mc/bus/dpcon.c b/drivers/staging/fsl-mc/bus/dpcon.c
index 8f84d7b..021b425 100644
--- a/drivers/staging/fsl-mc/bus/dpcon.c
+++ b/drivers/staging/fsl-mc/bus/dpcon.c
@@ -4,7 +4,7 @@
*
*/
#include <linux/kernel.h>
-#include "../include/mc.h"
+#include <linux/fsl/mc.h>
#include "../include/dpcon.h"
#include "dpcon-cmd.h"
diff --git a/drivers/staging/fsl-mc/bus/dpio/dpio-driver.c b/drivers/staging/fsl-mc/bus/dpio/dpio-driver.c
index b8479ef..182b384 100644
--- a/drivers/staging/fsl-mc/bus/dpio/dpio-driver.c
+++ b/drivers/staging/fsl-mc/bus/dpio/dpio-driver.c
@@ -14,7 +14,7 @@
#include <linux/dma-mapping.h>
#include <linux/delay.h>
-#include "../../include/mc.h"
+#include <linux/fsl/mc.h>
#include "../../include/dpaa2-io.h"
#include "qbman-portal.h"
diff --git a/drivers/staging/fsl-mc/bus/dpio/dpio-service.c b/drivers/staging/fsl-mc/bus/dpio/dpio-service.c
index d3c8462..1acff7e 100644
--- a/drivers/staging/fsl-mc/bus/dpio/dpio-service.c
+++ b/drivers/staging/fsl-mc/bus/dpio/dpio-service.c
@@ -5,7 +5,7 @@
*
*/
#include <linux/types.h>
-#include "../../include/mc.h"
+#include <linux/fsl/mc.h>
#include "../../include/dpaa2-io.h"
#include <linux/init.h>
#include <linux/module.h>
diff --git a/drivers/staging/fsl-mc/bus/dpio/dpio.c b/drivers/staging/fsl-mc/bus/dpio/dpio.c
index 20cdeae..3175057 100644
--- a/drivers/staging/fsl-mc/bus/dpio/dpio.c
+++ b/drivers/staging/fsl-mc/bus/dpio/dpio.c
@@ -5,7 +5,7 @@
*
*/
#include <linux/kernel.h>
-#include "../../include/mc.h"
+#include <linux/fsl/mc.h>
#include "dpio.h"
#include "dpio-cmd.h"
diff --git a/drivers/staging/fsl-mc/bus/dpmcp.c b/drivers/staging/fsl-mc/bus/dpmcp.c
deleted file mode 100644
index be07c77..0000000
--- a/drivers/staging/fsl-mc/bus/dpmcp.c
+++ /dev/null
@@ -1,99 +0,0 @@
-// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
-/*
- * Copyright 2013-2016 Freescale Semiconductor Inc.
- *
- */
-#include <linux/kernel.h>
-#include "../include/mc.h"
-
-#include "fsl-mc-private.h"
-
-/**
- * dpmcp_open() - Open a control session for the specified object.
- * @mc_io: Pointer to MC portal's I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @dpmcp_id: DPMCP unique ID
- * @token: Returned token; use in subsequent API calls
- *
- * This function can be used to open a control session for an
- * already created object; an object may have been declared in
- * the DPL or by calling the dpmcp_create function.
- * This function returns a unique authentication token,
- * associated with the specific object ID and the specific MC
- * portal; this token must be used in all subsequent commands for
- * this specific object
- *
- * Return: '0' on Success; Error code otherwise.
- */
-int dpmcp_open(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- int dpmcp_id,
- u16 *token)
-{
- struct mc_command cmd = { 0 };
- struct dpmcp_cmd_open *cmd_params;
- int err;
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPMCP_CMDID_OPEN,
- cmd_flags, 0);
- cmd_params = (struct dpmcp_cmd_open *)cmd.params;
- cmd_params->dpmcp_id = cpu_to_le32(dpmcp_id);
-
- /* send command to mc*/
- err = mc_send_command(mc_io, &cmd);
- if (err)
- return err;
-
- /* retrieve response parameters */
- *token = mc_cmd_hdr_read_token(&cmd);
-
- return err;
-}
-
-/**
- * dpmcp_close() - Close the control session of the object
- * @mc_io: Pointer to MC portal's I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @token: Token of DPMCP object
- *
- * After this function is called, no further operations are
- * allowed on the object without opening a new control session.
- *
- * Return: '0' on Success; Error code otherwise.
- */
-int dpmcp_close(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token)
-{
- struct mc_command cmd = { 0 };
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPMCP_CMDID_CLOSE,
- cmd_flags, token);
-
- /* send command to mc*/
- return mc_send_command(mc_io, &cmd);
-}
-
-/**
- * dpmcp_reset() - Reset the DPMCP, returns the object to initial state.
- * @mc_io: Pointer to MC portal's I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @token: Token of DPMCP object
- *
- * Return: '0' on Success; Error code otherwise.
- */
-int dpmcp_reset(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token)
-{
- struct mc_command cmd = { 0 };
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPMCP_CMDID_RESET,
- cmd_flags, token);
-
- /* send command to mc*/
- return mc_send_command(mc_io, &cmd);
-}
diff --git a/drivers/staging/fsl-mc/bus/dprc-driver.c b/drivers/staging/fsl-mc/bus/dprc-driver.c
deleted file mode 100644
index b090757..0000000
--- a/drivers/staging/fsl-mc/bus/dprc-driver.c
+++ /dev/null
@@ -1,809 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Freescale data path resource container (DPRC) driver
- *
- * Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
- * Author: German Rivera <[email protected]>
- *
- */
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/msi.h>
-#include "../include/mc.h"
-
-#include "fsl-mc-private.h"
-
-#define FSL_MC_DPRC_DRIVER_NAME "fsl_mc_dprc"
-
-struct fsl_mc_child_objs {
- int child_count;
- struct fsl_mc_obj_desc *child_array;
-};
-
-static bool fsl_mc_device_match(struct fsl_mc_device *mc_dev,
- struct fsl_mc_obj_desc *obj_desc)
-{
- return mc_dev->obj_desc.id == obj_desc->id &&
- strcmp(mc_dev->obj_desc.type, obj_desc->type) == 0;
-
-}
-
-static int __fsl_mc_device_remove_if_not_in_mc(struct device *dev, void *data)
-{
- int i;
- struct fsl_mc_child_objs *objs;
- struct fsl_mc_device *mc_dev;
-
- mc_dev = to_fsl_mc_device(dev);
- objs = data;
-
- for (i = 0; i < objs->child_count; i++) {
- struct fsl_mc_obj_desc *obj_desc = &objs->child_array[i];
-
- if (strlen(obj_desc->type) != 0 &&
- fsl_mc_device_match(mc_dev, obj_desc))
- break;
- }
-
- if (i == objs->child_count)
- fsl_mc_device_remove(mc_dev);
-
- return 0;
-}
-
-static int __fsl_mc_device_remove(struct device *dev, void *data)
-{
- fsl_mc_device_remove(to_fsl_mc_device(dev));
- return 0;
-}
-
-/**
- * dprc_remove_devices - Removes devices for objects removed from a DPRC
- *
- * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
- * @obj_desc_array: array of object descriptors for child objects currently
- * present in the DPRC in the MC.
- * @num_child_objects_in_mc: number of entries in obj_desc_array
- *
- * Synchronizes the state of the Linux bus driver with the actual state of
- * the MC by removing devices that represent MC objects that have
- * been dynamically removed in the physical DPRC.
- */
-static void dprc_remove_devices(struct fsl_mc_device *mc_bus_dev,
- struct fsl_mc_obj_desc *obj_desc_array,
- int num_child_objects_in_mc)
-{
- if (num_child_objects_in_mc != 0) {
- /*
- * Remove child objects that are in the DPRC in Linux,
- * but not in the MC:
- */
- struct fsl_mc_child_objs objs;
-
- objs.child_count = num_child_objects_in_mc;
- objs.child_array = obj_desc_array;
- device_for_each_child(&mc_bus_dev->dev, &objs,
- __fsl_mc_device_remove_if_not_in_mc);
- } else {
- /*
- * There are no child objects for this DPRC in the MC.
- * So, remove all the child devices from Linux:
- */
- device_for_each_child(&mc_bus_dev->dev, NULL,
- __fsl_mc_device_remove);
- }
-}
-
-static int __fsl_mc_device_match(struct device *dev, void *data)
-{
- struct fsl_mc_obj_desc *obj_desc = data;
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
-
- return fsl_mc_device_match(mc_dev, obj_desc);
-}
-
-static struct fsl_mc_device *fsl_mc_device_lookup(struct fsl_mc_obj_desc
- *obj_desc,
- struct fsl_mc_device
- *mc_bus_dev)
-{
- struct device *dev;
-
- dev = device_find_child(&mc_bus_dev->dev, obj_desc,
- __fsl_mc_device_match);
-
- return dev ? to_fsl_mc_device(dev) : NULL;
-}
-
-/**
- * check_plugged_state_change - Check change in an MC object's plugged state
- *
- * @mc_dev: pointer to the fsl-mc device for a given MC object
- * @obj_desc: pointer to the MC object's descriptor in the MC
- *
- * If the plugged state has changed from unplugged to plugged, the fsl-mc
- * device is bound to the corresponding device driver.
- * If the plugged state has changed from plugged to unplugged, the fsl-mc
- * device is unbound from the corresponding device driver.
- */
-static void check_plugged_state_change(struct fsl_mc_device *mc_dev,
- struct fsl_mc_obj_desc *obj_desc)
-{
- int error;
- u32 plugged_flag_at_mc =
- obj_desc->state & FSL_MC_OBJ_STATE_PLUGGED;
-
- if (plugged_flag_at_mc !=
- (mc_dev->obj_desc.state & FSL_MC_OBJ_STATE_PLUGGED)) {
- if (plugged_flag_at_mc) {
- mc_dev->obj_desc.state |= FSL_MC_OBJ_STATE_PLUGGED;
- error = device_attach(&mc_dev->dev);
- if (error < 0) {
- dev_err(&mc_dev->dev,
- "device_attach() failed: %d\n",
- error);
- }
- } else {
- mc_dev->obj_desc.state &= ~FSL_MC_OBJ_STATE_PLUGGED;
- device_release_driver(&mc_dev->dev);
- }
- }
-}
-
-/**
- * dprc_add_new_devices - Adds devices to the logical bus for a DPRC
- *
- * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
- * @obj_desc_array: array of device descriptors for child devices currently
- * present in the physical DPRC.
- * @num_child_objects_in_mc: number of entries in obj_desc_array
- *
- * Synchronizes the state of the Linux bus driver with the actual
- * state of the MC by adding objects that have been newly discovered
- * in the physical DPRC.
- */
-static void dprc_add_new_devices(struct fsl_mc_device *mc_bus_dev,
- struct fsl_mc_obj_desc *obj_desc_array,
- int num_child_objects_in_mc)
-{
- int error;
- int i;
-
- for (i = 0; i < num_child_objects_in_mc; i++) {
- struct fsl_mc_device *child_dev;
- struct fsl_mc_obj_desc *obj_desc = &obj_desc_array[i];
-
- if (strlen(obj_desc->type) == 0)
- continue;
-
- /*
- * Check if device is already known to Linux:
- */
- child_dev = fsl_mc_device_lookup(obj_desc, mc_bus_dev);
- if (child_dev) {
- check_plugged_state_change(child_dev, obj_desc);
- put_device(&child_dev->dev);
- continue;
- }
-
- error = fsl_mc_device_add(obj_desc, NULL, &mc_bus_dev->dev,
- &child_dev);
- if (error < 0)
- continue;
- }
-}
-
-/**
- * dprc_scan_objects - Discover objects in a DPRC
- *
- * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
- * @total_irq_count: If argument is provided the function populates the
- * total number of IRQs created by objects in the DPRC.
- *
- * Detects objects added and removed from a DPRC and synchronizes the
- * state of the Linux bus driver, MC by adding and removing
- * devices accordingly.
- * Two types of devices can be found in a DPRC: allocatable objects (e.g.,
- * dpbp, dpmcp) and non-allocatable devices (e.g., dprc, dpni).
- * All allocatable devices needed to be probed before all non-allocatable
- * devices, to ensure that device drivers for non-allocatable
- * devices can allocate any type of allocatable devices.
- * That is, we need to ensure that the corresponding resource pools are
- * populated before they can get allocation requests from probe callbacks
- * of the device drivers for the non-allocatable devices.
- */
-static int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev,
- unsigned int *total_irq_count)
-{
- int num_child_objects;
- int dprc_get_obj_failures;
- int error;
- unsigned int irq_count = mc_bus_dev->obj_desc.irq_count;
- struct fsl_mc_obj_desc *child_obj_desc_array = NULL;
- struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
-
- error = dprc_get_obj_count(mc_bus_dev->mc_io,
- 0,
- mc_bus_dev->mc_handle,
- &num_child_objects);
- if (error < 0) {
- dev_err(&mc_bus_dev->dev, "dprc_get_obj_count() failed: %d\n",
- error);
- return error;
- }
-
- if (num_child_objects != 0) {
- int i;
-
- child_obj_desc_array =
- devm_kmalloc_array(&mc_bus_dev->dev, num_child_objects,
- sizeof(*child_obj_desc_array),
- GFP_KERNEL);
- if (!child_obj_desc_array)
- return -ENOMEM;
-
- /*
- * Discover objects currently present in the physical DPRC:
- */
- dprc_get_obj_failures = 0;
- for (i = 0; i < num_child_objects; i++) {
- struct fsl_mc_obj_desc *obj_desc =
- &child_obj_desc_array[i];
-
- error = dprc_get_obj(mc_bus_dev->mc_io,
- 0,
- mc_bus_dev->mc_handle,
- i, obj_desc);
- if (error < 0) {
- dev_err(&mc_bus_dev->dev,
- "dprc_get_obj(i=%d) failed: %d\n",
- i, error);
- /*
- * Mark the obj entry as "invalid", by using the
- * empty string as obj type:
- */
- obj_desc->type[0] = '\0';
- obj_desc->id = error;
- dprc_get_obj_failures++;
- continue;
- }
-
- /*
- * add a quirk for all versions of dpsec < 4.0...none
- * are coherent regardless of what the MC reports.
- */
- if ((strcmp(obj_desc->type, "dpseci") == 0) &&
- (obj_desc->ver_major < 4))
- obj_desc->flags |=
- FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY;
-
- irq_count += obj_desc->irq_count;
- dev_dbg(&mc_bus_dev->dev,
- "Discovered object: type %s, id %d\n",
- obj_desc->type, obj_desc->id);
- }
-
- if (dprc_get_obj_failures != 0) {
- dev_err(&mc_bus_dev->dev,
- "%d out of %d devices could not be retrieved\n",
- dprc_get_obj_failures, num_child_objects);
- }
- }
-
- /*
- * Allocate IRQ's before binding the scanned devices with their
- * respective drivers.
- */
- if (dev_get_msi_domain(&mc_bus_dev->dev) && !mc_bus->irq_resources) {
- if (irq_count > FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS) {
- dev_warn(&mc_bus_dev->dev,
- "IRQs needed (%u) exceed IRQs preallocated (%u)\n",
- irq_count, FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS);
- }
-
- error = fsl_mc_populate_irq_pool(mc_bus,
- FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS);
- if (error < 0)
- return error;
- }
-
- if (total_irq_count)
- *total_irq_count = irq_count;
-
- dprc_remove_devices(mc_bus_dev, child_obj_desc_array,
- num_child_objects);
-
- dprc_add_new_devices(mc_bus_dev, child_obj_desc_array,
- num_child_objects);
-
- if (child_obj_desc_array)
- devm_kfree(&mc_bus_dev->dev, child_obj_desc_array);
-
- return 0;
-}
-
-/**
- * dprc_scan_container - Scans a physical DPRC and synchronizes Linux bus state
- *
- * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
- *
- * Scans the physical DPRC and synchronizes the state of the Linux
- * bus driver with the actual state of the MC by adding and removing
- * devices as appropriate.
- */
-static int dprc_scan_container(struct fsl_mc_device *mc_bus_dev)
-{
- int error;
- struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
-
- fsl_mc_init_all_resource_pools(mc_bus_dev);
-
- /*
- * Discover objects in the DPRC:
- */
- mutex_lock(&mc_bus->scan_mutex);
- error = dprc_scan_objects(mc_bus_dev, NULL);
- mutex_unlock(&mc_bus->scan_mutex);
- if (error < 0) {
- fsl_mc_cleanup_all_resource_pools(mc_bus_dev);
- return error;
- }
-
- return 0;
-}
-
-/**
- * dprc_irq0_handler - Regular ISR for DPRC interrupt 0
- *
- * @irq: IRQ number of the interrupt being handled
- * @arg: Pointer to device structure
- */
-static irqreturn_t dprc_irq0_handler(int irq_num, void *arg)
-{
- return IRQ_WAKE_THREAD;
-}
-
-/**
- * dprc_irq0_handler_thread - Handler thread function for DPRC interrupt 0
- *
- * @irq: IRQ number of the interrupt being handled
- * @arg: Pointer to device structure
- */
-static irqreturn_t dprc_irq0_handler_thread(int irq_num, void *arg)
-{
- int error;
- u32 status;
- struct device *dev = arg;
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
- struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
- struct fsl_mc_io *mc_io = mc_dev->mc_io;
- struct msi_desc *msi_desc = mc_dev->irqs[0]->msi_desc;
-
- dev_dbg(dev, "DPRC IRQ %d triggered on CPU %u\n",
- irq_num, smp_processor_id());
-
- if (!(mc_dev->flags & FSL_MC_IS_DPRC))
- return IRQ_HANDLED;
-
- mutex_lock(&mc_bus->scan_mutex);
- if (!msi_desc || msi_desc->irq != (u32)irq_num)
- goto out;
-
- status = 0;
- error = dprc_get_irq_status(mc_io, 0, mc_dev->mc_handle, 0,
- &status);
- if (error < 0) {
- dev_err(dev,
- "dprc_get_irq_status() failed: %d\n", error);
- goto out;
- }
-
- error = dprc_clear_irq_status(mc_io, 0, mc_dev->mc_handle, 0,
- status);
- if (error < 0) {
- dev_err(dev,
- "dprc_clear_irq_status() failed: %d\n", error);
- goto out;
- }
-
- if (status & (DPRC_IRQ_EVENT_OBJ_ADDED |
- DPRC_IRQ_EVENT_OBJ_REMOVED |
- DPRC_IRQ_EVENT_CONTAINER_DESTROYED |
- DPRC_IRQ_EVENT_OBJ_DESTROYED |
- DPRC_IRQ_EVENT_OBJ_CREATED)) {
- unsigned int irq_count;
-
- error = dprc_scan_objects(mc_dev, &irq_count);
- if (error < 0) {
- /*
- * If the error is -ENXIO, we ignore it, as it indicates
- * that the object scan was aborted, as we detected that
- * an object was removed from the DPRC in the MC, while
- * we were scanning the DPRC.
- */
- if (error != -ENXIO) {
- dev_err(dev, "dprc_scan_objects() failed: %d\n",
- error);
- }
-
- goto out;
- }
-
- if (irq_count > FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS) {
- dev_warn(dev,
- "IRQs needed (%u) exceed IRQs preallocated (%u)\n",
- irq_count, FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS);
- }
- }
-
-out:
- mutex_unlock(&mc_bus->scan_mutex);
- return IRQ_HANDLED;
-}
-
-/*
- * Disable and clear interrupt for a given DPRC object
- */
-static int disable_dprc_irq(struct fsl_mc_device *mc_dev)
-{
- int error;
- struct fsl_mc_io *mc_io = mc_dev->mc_io;
-
- /*
- * Disable generation of interrupt, while we configure it:
- */
- error = dprc_set_irq_enable(mc_io, 0, mc_dev->mc_handle, 0, 0);
- if (error < 0) {
- dev_err(&mc_dev->dev,
- "Disabling DPRC IRQ failed: dprc_set_irq_enable() failed: %d\n",
- error);
- return error;
- }
-
- /*
- * Disable all interrupt causes for the interrupt:
- */
- error = dprc_set_irq_mask(mc_io, 0, mc_dev->mc_handle, 0, 0x0);
- if (error < 0) {
- dev_err(&mc_dev->dev,
- "Disabling DPRC IRQ failed: dprc_set_irq_mask() failed: %d\n",
- error);
- return error;
- }
-
- /*
- * Clear any leftover interrupts:
- */
- error = dprc_clear_irq_status(mc_io, 0, mc_dev->mc_handle, 0, ~0x0U);
- if (error < 0) {
- dev_err(&mc_dev->dev,
- "Disabling DPRC IRQ failed: dprc_clear_irq_status() failed: %d\n",
- error);
- return error;
- }
-
- return 0;
-}
-
-static int register_dprc_irq_handler(struct fsl_mc_device *mc_dev)
-{
- int error;
- struct fsl_mc_device_irq *irq = mc_dev->irqs[0];
-
- /*
- * NOTE: devm_request_threaded_irq() invokes the device-specific
- * function that programs the MSI physically in the device
- */
- error = devm_request_threaded_irq(&mc_dev->dev,
- irq->msi_desc->irq,
- dprc_irq0_handler,
- dprc_irq0_handler_thread,
- IRQF_NO_SUSPEND | IRQF_ONESHOT,
- dev_name(&mc_dev->dev),
- &mc_dev->dev);
- if (error < 0) {
- dev_err(&mc_dev->dev,
- "devm_request_threaded_irq() failed: %d\n",
- error);
- return error;
- }
-
- return 0;
-}
-
-static int enable_dprc_irq(struct fsl_mc_device *mc_dev)
-{
- int error;
-
- /*
- * Enable all interrupt causes for the interrupt:
- */
- error = dprc_set_irq_mask(mc_dev->mc_io, 0, mc_dev->mc_handle, 0,
- ~0x0u);
- if (error < 0) {
- dev_err(&mc_dev->dev,
- "Enabling DPRC IRQ failed: dprc_set_irq_mask() failed: %d\n",
- error);
-
- return error;
- }
-
- /*
- * Enable generation of the interrupt:
- */
- error = dprc_set_irq_enable(mc_dev->mc_io, 0, mc_dev->mc_handle, 0, 1);
- if (error < 0) {
- dev_err(&mc_dev->dev,
- "Enabling DPRC IRQ failed: dprc_set_irq_enable() failed: %d\n",
- error);
-
- return error;
- }
-
- return 0;
-}
-
-/*
- * Setup interrupt for a given DPRC device
- */
-static int dprc_setup_irq(struct fsl_mc_device *mc_dev)
-{
- int error;
-
- error = fsl_mc_allocate_irqs(mc_dev);
- if (error < 0)
- return error;
-
- error = disable_dprc_irq(mc_dev);
- if (error < 0)
- goto error_free_irqs;
-
- error = register_dprc_irq_handler(mc_dev);
- if (error < 0)
- goto error_free_irqs;
-
- error = enable_dprc_irq(mc_dev);
- if (error < 0)
- goto error_free_irqs;
-
- return 0;
-
-error_free_irqs:
- fsl_mc_free_irqs(mc_dev);
- return error;
-}
-
-/**
- * dprc_probe - callback invoked when a DPRC is being bound to this driver
- *
- * @mc_dev: Pointer to fsl-mc device representing a DPRC
- *
- * It opens the physical DPRC in the MC.
- * It scans the DPRC to discover the MC objects contained in it.
- * It creates the interrupt pool for the MC bus associated with the DPRC.
- * It configures the interrupts for the DPRC device itself.
- */
-static int dprc_probe(struct fsl_mc_device *mc_dev)
-{
- int error;
- size_t region_size;
- struct device *parent_dev = mc_dev->dev.parent;
- struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
- bool mc_io_created = false;
- bool msi_domain_set = false;
- u16 major_ver, minor_ver;
-
- if (!is_fsl_mc_bus_dprc(mc_dev))
- return -EINVAL;
-
- if (dev_get_msi_domain(&mc_dev->dev))
- return -EINVAL;
-
- if (!mc_dev->mc_io) {
- /*
- * This is a child DPRC:
- */
- if (!dev_is_fsl_mc(parent_dev))
- return -EINVAL;
-
- if (mc_dev->obj_desc.region_count == 0)
- return -EINVAL;
-
- region_size = resource_size(mc_dev->regions);
-
- error = fsl_create_mc_io(&mc_dev->dev,
- mc_dev->regions[0].start,
- region_size,
- NULL,
- FSL_MC_IO_ATOMIC_CONTEXT_PORTAL,
- &mc_dev->mc_io);
- if (error < 0)
- return error;
-
- mc_io_created = true;
-
- /*
- * Inherit parent MSI domain:
- */
- dev_set_msi_domain(&mc_dev->dev,
- dev_get_msi_domain(parent_dev));
- msi_domain_set = true;
- } else {
- /*
- * This is a root DPRC
- */
- struct irq_domain *mc_msi_domain;
-
- if (dev_is_fsl_mc(parent_dev))
- return -EINVAL;
-
- error = fsl_mc_find_msi_domain(parent_dev,
- &mc_msi_domain);
- if (error < 0) {
- dev_warn(&mc_dev->dev,
- "WARNING: MC bus without interrupt support\n");
- } else {
- dev_set_msi_domain(&mc_dev->dev, mc_msi_domain);
- msi_domain_set = true;
- }
- }
-
- error = dprc_open(mc_dev->mc_io, 0, mc_dev->obj_desc.id,
- &mc_dev->mc_handle);
- if (error < 0) {
- dev_err(&mc_dev->dev, "dprc_open() failed: %d\n", error);
- goto error_cleanup_msi_domain;
- }
-
- error = dprc_get_attributes(mc_dev->mc_io, 0, mc_dev->mc_handle,
- &mc_bus->dprc_attr);
- if (error < 0) {
- dev_err(&mc_dev->dev, "dprc_get_attributes() failed: %d\n",
- error);
- goto error_cleanup_open;
- }
-
- error = dprc_get_api_version(mc_dev->mc_io, 0,
- &major_ver,
- &minor_ver);
- if (error < 0) {
- dev_err(&mc_dev->dev, "dprc_get_api_version() failed: %d\n",
- error);
- goto error_cleanup_open;
- }
-
- if (major_ver < DPRC_MIN_VER_MAJOR ||
- (major_ver == DPRC_MIN_VER_MAJOR &&
- minor_ver < DPRC_MIN_VER_MINOR)) {
- dev_err(&mc_dev->dev,
- "ERROR: DPRC version %d.%d not supported\n",
- major_ver, minor_ver);
- error = -ENOTSUPP;
- goto error_cleanup_open;
- }
-
- mutex_init(&mc_bus->scan_mutex);
-
- /*
- * Discover MC objects in DPRC object:
- */
- error = dprc_scan_container(mc_dev);
- if (error < 0)
- goto error_cleanup_open;
-
- /*
- * Configure interrupt for the DPRC object associated with this MC bus:
- */
- error = dprc_setup_irq(mc_dev);
- if (error < 0)
- goto error_cleanup_open;
-
- dev_info(&mc_dev->dev, "DPRC device bound to driver");
- return 0;
-
-error_cleanup_open:
- (void)dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);
-
-error_cleanup_msi_domain:
- if (msi_domain_set)
- dev_set_msi_domain(&mc_dev->dev, NULL);
-
- if (mc_io_created) {
- fsl_destroy_mc_io(mc_dev->mc_io);
- mc_dev->mc_io = NULL;
- }
-
- return error;
-}
-
-/*
- * Tear down interrupt for a given DPRC object
- */
-static void dprc_teardown_irq(struct fsl_mc_device *mc_dev)
-{
- struct fsl_mc_device_irq *irq = mc_dev->irqs[0];
-
- (void)disable_dprc_irq(mc_dev);
-
- devm_free_irq(&mc_dev->dev, irq->msi_desc->irq, &mc_dev->dev);
-
- fsl_mc_free_irqs(mc_dev);
-}
-
-/**
- * dprc_remove - callback invoked when a DPRC is being unbound from this driver
- *
- * @mc_dev: Pointer to fsl-mc device representing the DPRC
- *
- * It removes the DPRC's child objects from Linux (not from the MC) and
- * closes the DPRC device in the MC.
- * It tears down the interrupts that were configured for the DPRC device.
- * It destroys the interrupt pool associated with this MC bus.
- */
-static int dprc_remove(struct fsl_mc_device *mc_dev)
-{
- int error;
- struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
-
- if (!is_fsl_mc_bus_dprc(mc_dev))
- return -EINVAL;
- if (!mc_dev->mc_io)
- return -EINVAL;
-
- if (!mc_bus->irq_resources)
- return -EINVAL;
-
- if (dev_get_msi_domain(&mc_dev->dev))
- dprc_teardown_irq(mc_dev);
-
- device_for_each_child(&mc_dev->dev, NULL, __fsl_mc_device_remove);
-
- if (dev_get_msi_domain(&mc_dev->dev)) {
- fsl_mc_cleanup_irq_pool(mc_bus);
- dev_set_msi_domain(&mc_dev->dev, NULL);
- }
-
- fsl_mc_cleanup_all_resource_pools(mc_dev);
-
- error = dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);
- if (error < 0)
- dev_err(&mc_dev->dev, "dprc_close() failed: %d\n", error);
-
- if (!fsl_mc_is_root_dprc(&mc_dev->dev)) {
- fsl_destroy_mc_io(mc_dev->mc_io);
- mc_dev->mc_io = NULL;
- }
-
- dev_info(&mc_dev->dev, "DPRC device unbound from driver");
- return 0;
-}
-
-static const struct fsl_mc_device_id match_id_table[] = {
- {
- .vendor = FSL_MC_VENDOR_FREESCALE,
- .obj_type = "dprc"},
- {.vendor = 0x0},
-};
-
-static struct fsl_mc_driver dprc_driver = {
- .driver = {
- .name = FSL_MC_DPRC_DRIVER_NAME,
- .owner = THIS_MODULE,
- .pm = NULL,
- },
- .match_id_table = match_id_table,
- .probe = dprc_probe,
- .remove = dprc_remove,
-};
-
-int __init dprc_driver_init(void)
-{
- return fsl_mc_driver_register(&dprc_driver);
-}
-
-void dprc_driver_exit(void)
-{
- fsl_mc_driver_unregister(&dprc_driver);
-}
diff --git a/drivers/staging/fsl-mc/bus/dprc.c b/drivers/staging/fsl-mc/bus/dprc.c
deleted file mode 100644
index 97f5172..0000000
--- a/drivers/staging/fsl-mc/bus/dprc.c
+++ /dev/null
@@ -1,531 +0,0 @@
-// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
-/*
- * Copyright 2013-2016 Freescale Semiconductor Inc.
- *
- */
-#include <linux/kernel.h>
-#include "../include/mc.h"
-#include "fsl-mc-private.h"
-
-/**
- * dprc_open() - Open DPRC object for use
- * @mc_io: Pointer to MC portal's I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @container_id: Container ID to open
- * @token: Returned token of DPRC object
- *
- * Return: '0' on Success; Error code otherwise.
- *
- * @warning Required before any operation on the object.
- */
-int dprc_open(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- int container_id,
- u16 *token)
-{
- struct mc_command cmd = { 0 };
- struct dprc_cmd_open *cmd_params;
- int err;
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_OPEN, cmd_flags,
- 0);
- cmd_params = (struct dprc_cmd_open *)cmd.params;
- cmd_params->container_id = cpu_to_le32(container_id);
-
- /* send command to mc*/
- err = mc_send_command(mc_io, &cmd);
- if (err)
- return err;
-
- /* retrieve response parameters */
- *token = mc_cmd_hdr_read_token(&cmd);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(dprc_open);
-
-/**
- * dprc_close() - Close the control session of the object
- * @mc_io: Pointer to MC portal's I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @token: Token of DPRC object
- *
- * After this function is called, no further operations are
- * allowed on the object without opening a new control session.
- *
- * Return: '0' on Success; Error code otherwise.
- */
-int dprc_close(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token)
-{
- struct mc_command cmd = { 0 };
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_CLOSE, cmd_flags,
- token);
-
- /* send command to mc*/
- return mc_send_command(mc_io, &cmd);
-}
-EXPORT_SYMBOL_GPL(dprc_close);
-
-/**
- * dprc_set_irq() - Set IRQ information for the DPRC to trigger an interrupt.
- * @mc_io: Pointer to MC portal's I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @token: Token of DPRC object
- * @irq_index: Identifies the interrupt index to configure
- * @irq_cfg: IRQ configuration
- *
- * Return: '0' on Success; Error code otherwise.
- */
-int dprc_set_irq(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- u8 irq_index,
- struct dprc_irq_cfg *irq_cfg)
-{
- struct mc_command cmd = { 0 };
- struct dprc_cmd_set_irq *cmd_params;
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ,
- cmd_flags,
- token);
- cmd_params = (struct dprc_cmd_set_irq *)cmd.params;
- cmd_params->irq_val = cpu_to_le32(irq_cfg->val);
- cmd_params->irq_index = irq_index;
- cmd_params->irq_addr = cpu_to_le64(irq_cfg->paddr);
- cmd_params->irq_num = cpu_to_le32(irq_cfg->irq_num);
-
- /* send command to mc*/
- return mc_send_command(mc_io, &cmd);
-}
-
-/**
- * dprc_set_irq_enable() - Set overall interrupt state.
- * @mc_io: Pointer to MC portal's I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @token: Token of DPRC object
- * @irq_index: The interrupt index to configure
- * @en: Interrupt state - enable = 1, disable = 0
- *
- * Allows GPP software to control when interrupts are generated.
- * Each interrupt can have up to 32 causes. The enable/disable control's the
- * overall interrupt state. if the interrupt is disabled no causes will cause
- * an interrupt.
- *
- * Return: '0' on Success; Error code otherwise.
- */
-int dprc_set_irq_enable(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- u8 irq_index,
- u8 en)
-{
- struct mc_command cmd = { 0 };
- struct dprc_cmd_set_irq_enable *cmd_params;
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ_ENABLE,
- cmd_flags, token);
- cmd_params = (struct dprc_cmd_set_irq_enable *)cmd.params;
- cmd_params->enable = en & DPRC_ENABLE;
- cmd_params->irq_index = irq_index;
-
- /* send command to mc*/
- return mc_send_command(mc_io, &cmd);
-}
-
-/**
- * dprc_set_irq_mask() - Set interrupt mask.
- * @mc_io: Pointer to MC portal's I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @token: Token of DPRC object
- * @irq_index: The interrupt index to configure
- * @mask: event mask to trigger interrupt;
- * each bit:
- * 0 = ignore event
- * 1 = consider event for asserting irq
- *
- * Every interrupt can have up to 32 causes and the interrupt model supports
- * masking/unmasking each cause independently
- *
- * Return: '0' on Success; Error code otherwise.
- */
-int dprc_set_irq_mask(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- u8 irq_index,
- u32 mask)
-{
- struct mc_command cmd = { 0 };
- struct dprc_cmd_set_irq_mask *cmd_params;
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ_MASK,
- cmd_flags, token);
- cmd_params = (struct dprc_cmd_set_irq_mask *)cmd.params;
- cmd_params->mask = cpu_to_le32(mask);
- cmd_params->irq_index = irq_index;
-
- /* send command to mc*/
- return mc_send_command(mc_io, &cmd);
-}
-
-/**
- * dprc_get_irq_status() - Get the current status of any pending interrupts.
- * @mc_io: Pointer to MC portal's I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @token: Token of DPRC object
- * @irq_index: The interrupt index to configure
- * @status: Returned interrupts status - one bit per cause:
- * 0 = no interrupt pending
- * 1 = interrupt pending
- *
- * Return: '0' on Success; Error code otherwise.
- */
-int dprc_get_irq_status(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- u8 irq_index,
- u32 *status)
-{
- struct mc_command cmd = { 0 };
- struct dprc_cmd_get_irq_status *cmd_params;
- struct dprc_rsp_get_irq_status *rsp_params;
- int err;
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_IRQ_STATUS,
- cmd_flags, token);
- cmd_params = (struct dprc_cmd_get_irq_status *)cmd.params;
- cmd_params->status = cpu_to_le32(*status);
- cmd_params->irq_index = irq_index;
-
- /* send command to mc*/
- err = mc_send_command(mc_io, &cmd);
- if (err)
- return err;
-
- /* retrieve response parameters */
- rsp_params = (struct dprc_rsp_get_irq_status *)cmd.params;
- *status = le32_to_cpu(rsp_params->status);
-
- return 0;
-}
-
-/**
- * dprc_clear_irq_status() - Clear a pending interrupt's status
- * @mc_io: Pointer to MC portal's I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @token: Token of DPRC object
- * @irq_index: The interrupt index to configure
- * @status: bits to clear (W1C) - one bit per cause:
- * 0 = don't change
- * 1 = clear status bit
- *
- * Return: '0' on Success; Error code otherwise.
- */
-int dprc_clear_irq_status(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- u8 irq_index,
- u32 status)
-{
- struct mc_command cmd = { 0 };
- struct dprc_cmd_clear_irq_status *cmd_params;
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_CLEAR_IRQ_STATUS,
- cmd_flags, token);
- cmd_params = (struct dprc_cmd_clear_irq_status *)cmd.params;
- cmd_params->status = cpu_to_le32(status);
- cmd_params->irq_index = irq_index;
-
- /* send command to mc*/
- return mc_send_command(mc_io, &cmd);
-}
-
-/**
- * dprc_get_attributes() - Obtains container attributes
- * @mc_io: Pointer to MC portal's I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @token: Token of DPRC object
- * @attributes Returned container attributes
- *
- * Return: '0' on Success; Error code otherwise.
- */
-int dprc_get_attributes(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- struct dprc_attributes *attr)
-{
- struct mc_command cmd = { 0 };
- struct dprc_rsp_get_attributes *rsp_params;
- int err;
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_ATTR,
- cmd_flags,
- token);
-
- /* send command to mc*/
- err = mc_send_command(mc_io, &cmd);
- if (err)
- return err;
-
- /* retrieve response parameters */
- rsp_params = (struct dprc_rsp_get_attributes *)cmd.params;
- attr->container_id = le32_to_cpu(rsp_params->container_id);
- attr->icid = le16_to_cpu(rsp_params->icid);
- attr->options = le32_to_cpu(rsp_params->options);
- attr->portal_id = le32_to_cpu(rsp_params->portal_id);
-
- return 0;
-}
-
-/**
- * dprc_get_obj_count() - Obtains the number of objects in the DPRC
- * @mc_io: Pointer to MC portal's I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @token: Token of DPRC object
- * @obj_count: Number of objects assigned to the DPRC
- *
- * Return: '0' on Success; Error code otherwise.
- */
-int dprc_get_obj_count(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- int *obj_count)
-{
- struct mc_command cmd = { 0 };
- struct dprc_rsp_get_obj_count *rsp_params;
- int err;
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ_COUNT,
- cmd_flags, token);
-
- /* send command to mc*/
- err = mc_send_command(mc_io, &cmd);
- if (err)
- return err;
-
- /* retrieve response parameters */
- rsp_params = (struct dprc_rsp_get_obj_count *)cmd.params;
- *obj_count = le32_to_cpu(rsp_params->obj_count);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(dprc_get_obj_count);
-
-/**
- * dprc_get_obj() - Get general information on an object
- * @mc_io: Pointer to MC portal's I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @token: Token of DPRC object
- * @obj_index: Index of the object to be queried (< obj_count)
- * @obj_desc: Returns the requested object descriptor
- *
- * The object descriptors are retrieved one by one by incrementing
- * obj_index up to (not including) the value of obj_count returned
- * from dprc_get_obj_count(). dprc_get_obj_count() must
- * be called prior to dprc_get_obj().
- *
- * Return: '0' on Success; Error code otherwise.
- */
-int dprc_get_obj(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- int obj_index,
- struct fsl_mc_obj_desc *obj_desc)
-{
- struct mc_command cmd = { 0 };
- struct dprc_cmd_get_obj *cmd_params;
- struct dprc_rsp_get_obj *rsp_params;
- int err;
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ,
- cmd_flags,
- token);
- cmd_params = (struct dprc_cmd_get_obj *)cmd.params;
- cmd_params->obj_index = cpu_to_le32(obj_index);
-
- /* send command to mc*/
- err = mc_send_command(mc_io, &cmd);
- if (err)
- return err;
-
- /* retrieve response parameters */
- rsp_params = (struct dprc_rsp_get_obj *)cmd.params;
- obj_desc->id = le32_to_cpu(rsp_params->id);
- obj_desc->vendor = le16_to_cpu(rsp_params->vendor);
- obj_desc->irq_count = rsp_params->irq_count;
- obj_desc->region_count = rsp_params->region_count;
- obj_desc->state = le32_to_cpu(rsp_params->state);
- obj_desc->ver_major = le16_to_cpu(rsp_params->version_major);
- obj_desc->ver_minor = le16_to_cpu(rsp_params->version_minor);
- obj_desc->flags = le16_to_cpu(rsp_params->flags);
- strncpy(obj_desc->type, rsp_params->type, 16);
- obj_desc->type[15] = '\0';
- strncpy(obj_desc->label, rsp_params->label, 16);
- obj_desc->label[15] = '\0';
- return 0;
-}
-EXPORT_SYMBOL_GPL(dprc_get_obj);
-
-/**
- * dprc_set_obj_irq() - Set IRQ information for object to trigger an interrupt.
- * @mc_io: Pointer to MC portal's I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @token: Token of DPRC object
- * @obj_type: Type of the object to set its IRQ
- * @obj_id: ID of the object to set its IRQ
- * @irq_index: The interrupt index to configure
- * @irq_cfg: IRQ configuration
- *
- * Return: '0' on Success; Error code otherwise.
- */
-int dprc_set_obj_irq(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- char *obj_type,
- int obj_id,
- u8 irq_index,
- struct dprc_irq_cfg *irq_cfg)
-{
- struct mc_command cmd = { 0 };
- struct dprc_cmd_set_obj_irq *cmd_params;
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_OBJ_IRQ,
- cmd_flags,
- token);
- cmd_params = (struct dprc_cmd_set_obj_irq *)cmd.params;
- cmd_params->irq_val = cpu_to_le32(irq_cfg->val);
- cmd_params->irq_index = irq_index;
- cmd_params->irq_addr = cpu_to_le64(irq_cfg->paddr);
- cmd_params->irq_num = cpu_to_le32(irq_cfg->irq_num);
- cmd_params->obj_id = cpu_to_le32(obj_id);
- strncpy(cmd_params->obj_type, obj_type, 16);
- cmd_params->obj_type[15] = '\0';
-
- /* send command to mc*/
- return mc_send_command(mc_io, &cmd);
-}
-EXPORT_SYMBOL_GPL(dprc_set_obj_irq);
-
-/**
- * dprc_get_obj_region() - Get region information for a specified object.
- * @mc_io: Pointer to MC portal's I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @token: Token of DPRC object
- * @obj_type; Object type as returned in dprc_get_obj()
- * @obj_id: Unique object instance as returned in dprc_get_obj()
- * @region_index: The specific region to query
- * @region_desc: Returns the requested region descriptor
- *
- * Return: '0' on Success; Error code otherwise.
- */
-int dprc_get_obj_region(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- char *obj_type,
- int obj_id,
- u8 region_index,
- struct dprc_region_desc *region_desc)
-{
- struct mc_command cmd = { 0 };
- struct dprc_cmd_get_obj_region *cmd_params;
- struct dprc_rsp_get_obj_region *rsp_params;
- int err;
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ_REG,
- cmd_flags, token);
- cmd_params = (struct dprc_cmd_get_obj_region *)cmd.params;
- cmd_params->obj_id = cpu_to_le32(obj_id);
- cmd_params->region_index = region_index;
- strncpy(cmd_params->obj_type, obj_type, 16);
- cmd_params->obj_type[15] = '\0';
-
- /* send command to mc*/
- err = mc_send_command(mc_io, &cmd);
- if (err)
- return err;
-
- /* retrieve response parameters */
- rsp_params = (struct dprc_rsp_get_obj_region *)cmd.params;
- region_desc->base_offset = le64_to_cpu(rsp_params->base_addr);
- region_desc->size = le32_to_cpu(rsp_params->size);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(dprc_get_obj_region);
-
-/**
- * dprc_get_api_version - Get Data Path Resource Container API version
- * @mc_io: Pointer to Mc portal's I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @major_ver: Major version of Data Path Resource Container API
- * @minor_ver: Minor version of Data Path Resource Container API
- *
- * Return: '0' on Success; Error code otherwise.
- */
-int dprc_get_api_version(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 *major_ver,
- u16 *minor_ver)
-{
- struct mc_command cmd = { 0 };
- int err;
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_API_VERSION,
- cmd_flags, 0);
-
- /* send command to mc */
- err = mc_send_command(mc_io, &cmd);
- if (err)
- return err;
-
- /* retrieve response parameters */
- mc_cmd_read_api_version(&cmd, major_ver, minor_ver);
-
- return 0;
-}
-
-/**
- * dprc_get_container_id - Get container ID associated with a given portal.
- * @mc_io: Pointer to Mc portal's I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @container_id: Requested container id
- *
- * Return: '0' on Success; Error code otherwise.
- */
-int dprc_get_container_id(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- int *container_id)
-{
- struct mc_command cmd = { 0 };
- int err;
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_CONT_ID,
- cmd_flags,
- 0);
-
- /* send command to mc*/
- err = mc_send_command(mc_io, &cmd);
- if (err)
- return err;
-
- /* retrieve response parameters */
- *container_id = (int)mc_cmd_read_object_id(&cmd);
-
- return 0;
-}
diff --git a/drivers/staging/fsl-mc/bus/fsl-mc-allocator.c b/drivers/staging/fsl-mc/bus/fsl-mc-allocator.c
deleted file mode 100644
index 8f313a4..0000000
--- a/drivers/staging/fsl-mc/bus/fsl-mc-allocator.c
+++ /dev/null
@@ -1,648 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * fsl-mc object allocator driver
- *
- * Copyright (C) 2013-2016 Freescale Semiconductor, Inc.
- *
- */
-
-#include <linux/module.h>
-#include <linux/msi.h>
-#include "../include/mc.h"
-
-#include "fsl-mc-private.h"
-
-static bool __must_check fsl_mc_is_allocatable(struct fsl_mc_device *mc_dev)
-{
- return is_fsl_mc_bus_dpbp(mc_dev) ||
- is_fsl_mc_bus_dpmcp(mc_dev) ||
- is_fsl_mc_bus_dpcon(mc_dev);
-}
-
-/**
- * fsl_mc_resource_pool_add_device - add allocatable object to a resource
- * pool of a given fsl-mc bus
- *
- * @mc_bus: pointer to the fsl-mc bus
- * @pool_type: pool type
- * @mc_dev: pointer to allocatable fsl-mc device
- */
-static int __must_check fsl_mc_resource_pool_add_device(struct fsl_mc_bus
- *mc_bus,
- enum fsl_mc_pool_type
- pool_type,
- struct fsl_mc_device
- *mc_dev)
-{
- struct fsl_mc_resource_pool *res_pool;
- struct fsl_mc_resource *resource;
- struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
- int error = -EINVAL;
-
- if (pool_type < 0 || pool_type >= FSL_MC_NUM_POOL_TYPES)
- goto out;
- if (!fsl_mc_is_allocatable(mc_dev))
- goto out;
- if (mc_dev->resource)
- goto out;
-
- res_pool = &mc_bus->resource_pools[pool_type];
- if (res_pool->type != pool_type)
- goto out;
- if (res_pool->mc_bus != mc_bus)
- goto out;
-
- mutex_lock(&res_pool->mutex);
-
- if (res_pool->max_count < 0)
- goto out_unlock;
- if (res_pool->free_count < 0 ||
- res_pool->free_count > res_pool->max_count)
- goto out_unlock;
-
- resource = devm_kzalloc(&mc_bus_dev->dev, sizeof(*resource),
- GFP_KERNEL);
- if (!resource) {
- error = -ENOMEM;
- dev_err(&mc_bus_dev->dev,
- "Failed to allocate memory for fsl_mc_resource\n");
- goto out_unlock;
- }
-
- resource->type = pool_type;
- resource->id = mc_dev->obj_desc.id;
- resource->data = mc_dev;
- resource->parent_pool = res_pool;
- INIT_LIST_HEAD(&resource->node);
- list_add_tail(&resource->node, &res_pool->free_list);
- mc_dev->resource = resource;
- res_pool->free_count++;
- res_pool->max_count++;
- error = 0;
-out_unlock:
- mutex_unlock(&res_pool->mutex);
-out:
- return error;
-}
-
-/**
- * fsl_mc_resource_pool_remove_device - remove an allocatable device from a
- * resource pool
- *
- * @mc_dev: pointer to allocatable fsl-mc device
- *
- * It permanently removes an allocatable fsl-mc device from the resource
- * pool. It's an error if the device is in use.
- */
-static int __must_check fsl_mc_resource_pool_remove_device(struct fsl_mc_device
- *mc_dev)
-{
- struct fsl_mc_device *mc_bus_dev;
- struct fsl_mc_bus *mc_bus;
- struct fsl_mc_resource_pool *res_pool;
- struct fsl_mc_resource *resource;
- int error = -EINVAL;
-
- if (!fsl_mc_is_allocatable(mc_dev))
- goto out;
-
- resource = mc_dev->resource;
- if (!resource || resource->data != mc_dev)
- goto out;
-
- mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
- mc_bus = to_fsl_mc_bus(mc_bus_dev);
- res_pool = resource->parent_pool;
- if (res_pool != &mc_bus->resource_pools[resource->type])
- goto out;
-
- mutex_lock(&res_pool->mutex);
-
- if (res_pool->max_count <= 0)
- goto out_unlock;
- if (res_pool->free_count <= 0 ||
- res_pool->free_count > res_pool->max_count)
- goto out_unlock;
-
- /*
- * If the device is currently allocated, its resource is not
- * in the free list and thus, the device cannot be removed.
- */
- if (list_empty(&resource->node)) {
- error = -EBUSY;
- dev_err(&mc_bus_dev->dev,
- "Device %s cannot be removed from resource pool\n",
- dev_name(&mc_dev->dev));
- goto out_unlock;
- }
-
- list_del_init(&resource->node);
- res_pool->free_count--;
- res_pool->max_count--;
-
- devm_kfree(&mc_bus_dev->dev, resource);
- mc_dev->resource = NULL;
- error = 0;
-out_unlock:
- mutex_unlock(&res_pool->mutex);
-out:
- return error;
-}
-
-static const char *const fsl_mc_pool_type_strings[] = {
- [FSL_MC_POOL_DPMCP] = "dpmcp",
- [FSL_MC_POOL_DPBP] = "dpbp",
- [FSL_MC_POOL_DPCON] = "dpcon",
- [FSL_MC_POOL_IRQ] = "irq",
-};
-
-static int __must_check object_type_to_pool_type(const char *object_type,
- enum fsl_mc_pool_type
- *pool_type)
-{
- unsigned int i;
-
- for (i = 0; i < ARRAY_SIZE(fsl_mc_pool_type_strings); i++) {
- if (strcmp(object_type, fsl_mc_pool_type_strings[i]) == 0) {
- *pool_type = i;
- return 0;
- }
- }
-
- return -EINVAL;
-}
-
-int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus,
- enum fsl_mc_pool_type pool_type,
- struct fsl_mc_resource **new_resource)
-{
- struct fsl_mc_resource_pool *res_pool;
- struct fsl_mc_resource *resource;
- struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
- int error = -EINVAL;
-
- BUILD_BUG_ON(ARRAY_SIZE(fsl_mc_pool_type_strings) !=
- FSL_MC_NUM_POOL_TYPES);
-
- *new_resource = NULL;
- if (pool_type < 0 || pool_type >= FSL_MC_NUM_POOL_TYPES)
- goto out;
-
- res_pool = &mc_bus->resource_pools[pool_type];
- if (res_pool->mc_bus != mc_bus)
- goto out;
-
- mutex_lock(&res_pool->mutex);
- resource = list_first_entry_or_null(&res_pool->free_list,
- struct fsl_mc_resource, node);
-
- if (!resource) {
- error = -ENXIO;
- dev_err(&mc_bus_dev->dev,
- "No more resources of type %s left\n",
- fsl_mc_pool_type_strings[pool_type]);
- goto out_unlock;
- }
-
- if (resource->type != pool_type)
- goto out_unlock;
- if (resource->parent_pool != res_pool)
- goto out_unlock;
- if (res_pool->free_count <= 0 ||
- res_pool->free_count > res_pool->max_count)
- goto out_unlock;
-
- list_del_init(&resource->node);
-
- res_pool->free_count--;
- error = 0;
-out_unlock:
- mutex_unlock(&res_pool->mutex);
- *new_resource = resource;
-out:
- return error;
-}
-EXPORT_SYMBOL_GPL(fsl_mc_resource_allocate);
-
-void fsl_mc_resource_free(struct fsl_mc_resource *resource)
-{
- struct fsl_mc_resource_pool *res_pool;
-
- res_pool = resource->parent_pool;
- if (resource->type != res_pool->type)
- return;
-
- mutex_lock(&res_pool->mutex);
- if (res_pool->free_count < 0 ||
- res_pool->free_count >= res_pool->max_count)
- goto out_unlock;
-
- if (!list_empty(&resource->node))
- goto out_unlock;
-
- list_add_tail(&resource->node, &res_pool->free_list);
- res_pool->free_count++;
-out_unlock:
- mutex_unlock(&res_pool->mutex);
-}
-EXPORT_SYMBOL_GPL(fsl_mc_resource_free);
-
-/**
- * fsl_mc_object_allocate - Allocates an fsl-mc object of the given
- * pool type from a given fsl-mc bus instance
- *
- * @mc_dev: fsl-mc device which is used in conjunction with the
- * allocated object
- * @pool_type: pool type
- * @new_mc_dev: pointer to area where the pointer to the allocated device
- * is to be returned
- *
- * Allocatable objects are always used in conjunction with some functional
- * device. This function allocates an object of the specified type from
- * the DPRC containing the functional device.
- *
- * NOTE: pool_type must be different from FSL_MC_POOL_MCP, since MC
- * portals are allocated using fsl_mc_portal_allocate(), instead of
- * this function.
- */
-int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev,
- enum fsl_mc_pool_type pool_type,
- struct fsl_mc_device **new_mc_adev)
-{
- struct fsl_mc_device *mc_bus_dev;
- struct fsl_mc_bus *mc_bus;
- struct fsl_mc_device *mc_adev;
- int error = -EINVAL;
- struct fsl_mc_resource *resource = NULL;
-
- *new_mc_adev = NULL;
- if (mc_dev->flags & FSL_MC_IS_DPRC)
- goto error;
-
- if (!dev_is_fsl_mc(mc_dev->dev.parent))
- goto error;
-
- if (pool_type == FSL_MC_POOL_DPMCP)
- goto error;
-
- mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
- mc_bus = to_fsl_mc_bus(mc_bus_dev);
- error = fsl_mc_resource_allocate(mc_bus, pool_type, &resource);
- if (error < 0)
- goto error;
-
- mc_adev = resource->data;
- if (!mc_adev)
- goto error;
-
- *new_mc_adev = mc_adev;
- return 0;
-error:
- if (resource)
- fsl_mc_resource_free(resource);
-
- return error;
-}
-EXPORT_SYMBOL_GPL(fsl_mc_object_allocate);
-
-/**
- * fsl_mc_object_free - Returns an fsl-mc object to the resource
- * pool where it came from.
- * @mc_adev: Pointer to the fsl-mc device
- */
-void fsl_mc_object_free(struct fsl_mc_device *mc_adev)
-{
- struct fsl_mc_resource *resource;
-
- resource = mc_adev->resource;
- if (resource->type == FSL_MC_POOL_DPMCP)
- return;
- if (resource->data != mc_adev)
- return;
-
- fsl_mc_resource_free(resource);
-}
-EXPORT_SYMBOL_GPL(fsl_mc_object_free);
-
-/*
- * A DPRC and the devices in the DPRC all share the same GIC-ITS device
- * ID. A block of IRQs is pre-allocated and maintained in a pool
- * from which devices can allocate them when needed.
- */
-
-/*
- * Initialize the interrupt pool associated with an fsl-mc bus.
- * It allocates a block of IRQs from the GIC-ITS.
- */
-int fsl_mc_populate_irq_pool(struct fsl_mc_bus *mc_bus,
- unsigned int irq_count)
-{
- unsigned int i;
- struct msi_desc *msi_desc;
- struct fsl_mc_device_irq *irq_resources;
- struct fsl_mc_device_irq *mc_dev_irq;
- int error;
- struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
- struct fsl_mc_resource_pool *res_pool =
- &mc_bus->resource_pools[FSL_MC_POOL_IRQ];
-
- if (irq_count == 0 ||
- irq_count > FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS)
- return -EINVAL;
-
- error = fsl_mc_msi_domain_alloc_irqs(&mc_bus_dev->dev, irq_count);
- if (error < 0)
- return error;
-
- irq_resources = devm_kzalloc(&mc_bus_dev->dev,
- sizeof(*irq_resources) * irq_count,
- GFP_KERNEL);
- if (!irq_resources) {
- error = -ENOMEM;
- goto cleanup_msi_irqs;
- }
-
- for (i = 0; i < irq_count; i++) {
- mc_dev_irq = &irq_resources[i];
-
- /*
- * NOTE: This mc_dev_irq's MSI addr/value pair will be set
- * by the fsl_mc_msi_write_msg() callback
- */
- mc_dev_irq->resource.type = res_pool->type;
- mc_dev_irq->resource.data = mc_dev_irq;
- mc_dev_irq->resource.parent_pool = res_pool;
- INIT_LIST_HEAD(&mc_dev_irq->resource.node);
- list_add_tail(&mc_dev_irq->resource.node, &res_pool->free_list);
- }
-
- for_each_msi_entry(msi_desc, &mc_bus_dev->dev) {
- mc_dev_irq = &irq_resources[msi_desc->fsl_mc.msi_index];
- mc_dev_irq->msi_desc = msi_desc;
- mc_dev_irq->resource.id = msi_desc->irq;
- }
-
- res_pool->max_count = irq_count;
- res_pool->free_count = irq_count;
- mc_bus->irq_resources = irq_resources;
- return 0;
-
-cleanup_msi_irqs:
- fsl_mc_msi_domain_free_irqs(&mc_bus_dev->dev);
- return error;
-}
-EXPORT_SYMBOL_GPL(fsl_mc_populate_irq_pool);
-
-/**
- * Teardown the interrupt pool associated with an fsl-mc bus.
- * It frees the IRQs that were allocated to the pool, back to the GIC-ITS.
- */
-void fsl_mc_cleanup_irq_pool(struct fsl_mc_bus *mc_bus)
-{
- struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
- struct fsl_mc_resource_pool *res_pool =
- &mc_bus->resource_pools[FSL_MC_POOL_IRQ];
-
- if (!mc_bus->irq_resources)
- return;
-
- if (res_pool->max_count == 0)
- return;
-
- if (res_pool->free_count != res_pool->max_count)
- return;
-
- INIT_LIST_HEAD(&res_pool->free_list);
- res_pool->max_count = 0;
- res_pool->free_count = 0;
- mc_bus->irq_resources = NULL;
- fsl_mc_msi_domain_free_irqs(&mc_bus_dev->dev);
-}
-EXPORT_SYMBOL_GPL(fsl_mc_cleanup_irq_pool);
-
-/**
- * Allocate the IRQs required by a given fsl-mc device.
- */
-int __must_check fsl_mc_allocate_irqs(struct fsl_mc_device *mc_dev)
-{
- int i;
- int irq_count;
- int res_allocated_count = 0;
- int error = -EINVAL;
- struct fsl_mc_device_irq **irqs = NULL;
- struct fsl_mc_bus *mc_bus;
- struct fsl_mc_resource_pool *res_pool;
-
- if (mc_dev->irqs)
- return -EINVAL;
-
- irq_count = mc_dev->obj_desc.irq_count;
- if (irq_count == 0)
- return -EINVAL;
-
- if (is_fsl_mc_bus_dprc(mc_dev))
- mc_bus = to_fsl_mc_bus(mc_dev);
- else
- mc_bus = to_fsl_mc_bus(to_fsl_mc_device(mc_dev->dev.parent));
-
- if (!mc_bus->irq_resources)
- return -EINVAL;
-
- res_pool = &mc_bus->resource_pools[FSL_MC_POOL_IRQ];
- if (res_pool->free_count < irq_count) {
- dev_err(&mc_dev->dev,
- "Not able to allocate %u irqs for device\n", irq_count);
- return -ENOSPC;
- }
-
- irqs = devm_kzalloc(&mc_dev->dev, irq_count * sizeof(irqs[0]),
- GFP_KERNEL);
- if (!irqs)
- return -ENOMEM;
-
- for (i = 0; i < irq_count; i++) {
- struct fsl_mc_resource *resource;
-
- error = fsl_mc_resource_allocate(mc_bus, FSL_MC_POOL_IRQ,
- &resource);
- if (error < 0)
- goto error_resource_alloc;
-
- irqs[i] = to_fsl_mc_irq(resource);
- res_allocated_count++;
-
- irqs[i]->mc_dev = mc_dev;
- irqs[i]->dev_irq_index = i;
- }
-
- mc_dev->irqs = irqs;
- return 0;
-
-error_resource_alloc:
- for (i = 0; i < res_allocated_count; i++) {
- irqs[i]->mc_dev = NULL;
- fsl_mc_resource_free(&irqs[i]->resource);
- }
-
- return error;
-}
-EXPORT_SYMBOL_GPL(fsl_mc_allocate_irqs);
-
-/*
- * Frees the IRQs that were allocated for an fsl-mc device.
- */
-void fsl_mc_free_irqs(struct fsl_mc_device *mc_dev)
-{
- int i;
- int irq_count;
- struct fsl_mc_bus *mc_bus;
- struct fsl_mc_device_irq **irqs = mc_dev->irqs;
-
- if (!irqs)
- return;
-
- irq_count = mc_dev->obj_desc.irq_count;
-
- if (is_fsl_mc_bus_dprc(mc_dev))
- mc_bus = to_fsl_mc_bus(mc_dev);
- else
- mc_bus = to_fsl_mc_bus(to_fsl_mc_device(mc_dev->dev.parent));
-
- if (!mc_bus->irq_resources)
- return;
-
- for (i = 0; i < irq_count; i++) {
- irqs[i]->mc_dev = NULL;
- fsl_mc_resource_free(&irqs[i]->resource);
- }
-
- mc_dev->irqs = NULL;
-}
-EXPORT_SYMBOL_GPL(fsl_mc_free_irqs);
-
-void fsl_mc_init_all_resource_pools(struct fsl_mc_device *mc_bus_dev)
-{
- int pool_type;
- struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
-
- for (pool_type = 0; pool_type < FSL_MC_NUM_POOL_TYPES; pool_type++) {
- struct fsl_mc_resource_pool *res_pool =
- &mc_bus->resource_pools[pool_type];
-
- res_pool->type = pool_type;
- res_pool->max_count = 0;
- res_pool->free_count = 0;
- res_pool->mc_bus = mc_bus;
- INIT_LIST_HEAD(&res_pool->free_list);
- mutex_init(&res_pool->mutex);
- }
-}
-
-static void fsl_mc_cleanup_resource_pool(struct fsl_mc_device *mc_bus_dev,
- enum fsl_mc_pool_type pool_type)
-{
- struct fsl_mc_resource *resource;
- struct fsl_mc_resource *next;
- struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
- struct fsl_mc_resource_pool *res_pool =
- &mc_bus->resource_pools[pool_type];
- int free_count = 0;
-
- list_for_each_entry_safe(resource, next, &res_pool->free_list, node) {
- free_count++;
- devm_kfree(&mc_bus_dev->dev, resource);
- }
-}
-
-void fsl_mc_cleanup_all_resource_pools(struct fsl_mc_device *mc_bus_dev)
-{
- int pool_type;
-
- for (pool_type = 0; pool_type < FSL_MC_NUM_POOL_TYPES; pool_type++)
- fsl_mc_cleanup_resource_pool(mc_bus_dev, pool_type);
-}
-
-/**
- * fsl_mc_allocator_probe - callback invoked when an allocatable device is
- * being added to the system
- */
-static int fsl_mc_allocator_probe(struct fsl_mc_device *mc_dev)
-{
- enum fsl_mc_pool_type pool_type;
- struct fsl_mc_device *mc_bus_dev;
- struct fsl_mc_bus *mc_bus;
- int error;
-
- if (!fsl_mc_is_allocatable(mc_dev))
- return -EINVAL;
-
- mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
- if (!dev_is_fsl_mc(&mc_bus_dev->dev))
- return -EINVAL;
-
- mc_bus = to_fsl_mc_bus(mc_bus_dev);
- error = object_type_to_pool_type(mc_dev->obj_desc.type, &pool_type);
- if (error < 0)
- return error;
-
- error = fsl_mc_resource_pool_add_device(mc_bus, pool_type, mc_dev);
- if (error < 0)
- return error;
-
- dev_dbg(&mc_dev->dev,
- "Allocatable fsl-mc device bound to fsl_mc_allocator driver");
- return 0;
-}
-
-/**
- * fsl_mc_allocator_remove - callback invoked when an allocatable device is
- * being removed from the system
- */
-static int fsl_mc_allocator_remove(struct fsl_mc_device *mc_dev)
-{
- int error;
-
- if (!fsl_mc_is_allocatable(mc_dev))
- return -EINVAL;
-
- if (mc_dev->resource) {
- error = fsl_mc_resource_pool_remove_device(mc_dev);
- if (error < 0)
- return error;
- }
-
- dev_dbg(&mc_dev->dev,
- "Allocatable fsl-mc device unbound from fsl_mc_allocator driver");
- return 0;
-}
-
-static const struct fsl_mc_device_id match_id_table[] = {
- {
- .vendor = FSL_MC_VENDOR_FREESCALE,
- .obj_type = "dpbp",
- },
- {
- .vendor = FSL_MC_VENDOR_FREESCALE,
- .obj_type = "dpmcp",
- },
- {
- .vendor = FSL_MC_VENDOR_FREESCALE,
- .obj_type = "dpcon",
- },
- {.vendor = 0x0},
-};
-
-static struct fsl_mc_driver fsl_mc_allocator_driver = {
- .driver = {
- .name = "fsl_mc_allocator",
- .pm = NULL,
- },
- .match_id_table = match_id_table,
- .probe = fsl_mc_allocator_probe,
- .remove = fsl_mc_allocator_remove,
-};
-
-int __init fsl_mc_allocator_driver_init(void)
-{
- return fsl_mc_driver_register(&fsl_mc_allocator_driver);
-}
diff --git a/drivers/staging/fsl-mc/bus/fsl-mc-bus.c b/drivers/staging/fsl-mc/bus/fsl-mc-bus.c
deleted file mode 100644
index 1b333c4..0000000
--- a/drivers/staging/fsl-mc/bus/fsl-mc-bus.c
+++ /dev/null
@@ -1,948 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Freescale Management Complex (MC) bus driver
- *
- * Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
- * Author: German Rivera <[email protected]>
- *
- */
-
-#define pr_fmt(fmt) "fsl-mc: " fmt
-
-#include <linux/module.h>
-#include <linux/of_device.h>
-#include <linux/of_address.h>
-#include <linux/ioport.h>
-#include <linux/slab.h>
-#include <linux/limits.h>
-#include <linux/bitops.h>
-#include <linux/msi.h>
-#include <linux/dma-mapping.h>
-
-#include "fsl-mc-private.h"
-
-/**
- * Default DMA mask for devices on a fsl-mc bus
- */
-#define FSL_MC_DEFAULT_DMA_MASK (~0ULL)
-
-/**
- * struct fsl_mc - Private data of a "fsl,qoriq-mc" platform device
- * @root_mc_bus_dev: fsl-mc device representing the root DPRC
- * @num_translation_ranges: number of entries in addr_translation_ranges
- * @translation_ranges: array of bus to system address translation ranges
- */
-struct fsl_mc {
- struct fsl_mc_device *root_mc_bus_dev;
- u8 num_translation_ranges;
- struct fsl_mc_addr_translation_range *translation_ranges;
-};
-
-/**
- * struct fsl_mc_addr_translation_range - bus to system address translation
- * range
- * @mc_region_type: Type of MC region for the range being translated
- * @start_mc_offset: Start MC offset of the range being translated
- * @end_mc_offset: MC offset of the first byte after the range (last MC
- * offset of the range is end_mc_offset - 1)
- * @start_phys_addr: system physical address corresponding to start_mc_addr
- */
-struct fsl_mc_addr_translation_range {
- enum dprc_region_type mc_region_type;
- u64 start_mc_offset;
- u64 end_mc_offset;
- phys_addr_t start_phys_addr;
-};
-
-/**
- * struct mc_version
- * @major: Major version number: incremented on API compatibility changes
- * @minor: Minor version number: incremented on API additions (that are
- * backward compatible); reset when major version is incremented
- * @revision: Internal revision number: incremented on implementation changes
- * and/or bug fixes that have no impact on API
- */
-struct mc_version {
- u32 major;
- u32 minor;
- u32 revision;
-};
-
-/**
- * fsl_mc_bus_match - device to driver matching callback
- * @dev: the fsl-mc device to match against
- * @drv: the device driver to search for matching fsl-mc object type
- * structures
- *
- * Returns 1 on success, 0 otherwise.
- */
-static int fsl_mc_bus_match(struct device *dev, struct device_driver *drv)
-{
- const struct fsl_mc_device_id *id;
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
- struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(drv);
- bool found = false;
-
- if (!mc_drv->match_id_table)
- goto out;
-
- /*
- * If the object is not 'plugged' don't match.
- * Only exception is the root DPRC, which is a special case.
- */
- if ((mc_dev->obj_desc.state & FSL_MC_OBJ_STATE_PLUGGED) == 0 &&
- !fsl_mc_is_root_dprc(&mc_dev->dev))
- goto out;
-
- /*
- * Traverse the match_id table of the given driver, trying to find
- * a matching for the given device.
- */
- for (id = mc_drv->match_id_table; id->vendor != 0x0; id++) {
- if (id->vendor == mc_dev->obj_desc.vendor &&
- strcmp(id->obj_type, mc_dev->obj_desc.type) == 0) {
- found = true;
-
- break;
- }
- }
-
-out:
- dev_dbg(dev, "%smatched\n", found ? "" : "not ");
- return found;
-}
-
-/**
- * fsl_mc_bus_uevent - callback invoked when a device is added
- */
-static int fsl_mc_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
-{
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
-
- if (add_uevent_var(env, "MODALIAS=fsl-mc:v%08Xd%s",
- mc_dev->obj_desc.vendor,
- mc_dev->obj_desc.type))
- return -ENOMEM;
-
- return 0;
-}
-
-static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
-
- return sprintf(buf, "fsl-mc:v%08Xd%s\n", mc_dev->obj_desc.vendor,
- mc_dev->obj_desc.type);
-}
-static DEVICE_ATTR_RO(modalias);
-
-static struct attribute *fsl_mc_dev_attrs[] = {
- &dev_attr_modalias.attr,
- NULL,
-};
-
-ATTRIBUTE_GROUPS(fsl_mc_dev);
-
-struct bus_type fsl_mc_bus_type = {
- .name = "fsl-mc",
- .match = fsl_mc_bus_match,
- .uevent = fsl_mc_bus_uevent,
- .dev_groups = fsl_mc_dev_groups,
-};
-EXPORT_SYMBOL_GPL(fsl_mc_bus_type);
-
-struct device_type fsl_mc_bus_dprc_type = {
- .name = "fsl_mc_bus_dprc"
-};
-
-struct device_type fsl_mc_bus_dpni_type = {
- .name = "fsl_mc_bus_dpni"
-};
-
-struct device_type fsl_mc_bus_dpio_type = {
- .name = "fsl_mc_bus_dpio"
-};
-
-struct device_type fsl_mc_bus_dpsw_type = {
- .name = "fsl_mc_bus_dpsw"
-};
-
-struct device_type fsl_mc_bus_dpbp_type = {
- .name = "fsl_mc_bus_dpbp"
-};
-
-struct device_type fsl_mc_bus_dpcon_type = {
- .name = "fsl_mc_bus_dpcon"
-};
-
-struct device_type fsl_mc_bus_dpmcp_type = {
- .name = "fsl_mc_bus_dpmcp"
-};
-
-struct device_type fsl_mc_bus_dpmac_type = {
- .name = "fsl_mc_bus_dpmac"
-};
-
-struct device_type fsl_mc_bus_dprtc_type = {
- .name = "fsl_mc_bus_dprtc"
-};
-
-static struct device_type *fsl_mc_get_device_type(const char *type)
-{
- static const struct {
- struct device_type *dev_type;
- const char *type;
- } dev_types[] = {
- { &fsl_mc_bus_dprc_type, "dprc" },
- { &fsl_mc_bus_dpni_type, "dpni" },
- { &fsl_mc_bus_dpio_type, "dpio" },
- { &fsl_mc_bus_dpsw_type, "dpsw" },
- { &fsl_mc_bus_dpbp_type, "dpbp" },
- { &fsl_mc_bus_dpcon_type, "dpcon" },
- { &fsl_mc_bus_dpmcp_type, "dpmcp" },
- { &fsl_mc_bus_dpmac_type, "dpmac" },
- { &fsl_mc_bus_dprtc_type, "dprtc" },
- { NULL, NULL }
- };
- int i;
-
- for (i = 0; dev_types[i].dev_type; i++)
- if (!strcmp(dev_types[i].type, type))
- return dev_types[i].dev_type;
-
- return NULL;
-}
-
-static int fsl_mc_driver_probe(struct device *dev)
-{
- struct fsl_mc_driver *mc_drv;
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
- int error;
-
- mc_drv = to_fsl_mc_driver(dev->driver);
-
- error = mc_drv->probe(mc_dev);
- if (error < 0) {
- if (error != -EPROBE_DEFER)
- dev_err(dev, "%s failed: %d\n", __func__, error);
- return error;
- }
-
- return 0;
-}
-
-static int fsl_mc_driver_remove(struct device *dev)
-{
- struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(dev->driver);
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
- int error;
-
- error = mc_drv->remove(mc_dev);
- if (error < 0) {
- dev_err(dev, "%s failed: %d\n", __func__, error);
- return error;
- }
-
- return 0;
-}
-
-static void fsl_mc_driver_shutdown(struct device *dev)
-{
- struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(dev->driver);
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
-
- mc_drv->shutdown(mc_dev);
-}
-
-/**
- * __fsl_mc_driver_register - registers a child device driver with the
- * MC bus
- *
- * This function is implicitly invoked from the registration function of
- * fsl_mc device drivers, which is generated by the
- * module_fsl_mc_driver() macro.
- */
-int __fsl_mc_driver_register(struct fsl_mc_driver *mc_driver,
- struct module *owner)
-{
- int error;
-
- mc_driver->driver.owner = owner;
- mc_driver->driver.bus = &fsl_mc_bus_type;
-
- if (mc_driver->probe)
- mc_driver->driver.probe = fsl_mc_driver_probe;
-
- if (mc_driver->remove)
- mc_driver->driver.remove = fsl_mc_driver_remove;
-
- if (mc_driver->shutdown)
- mc_driver->driver.shutdown = fsl_mc_driver_shutdown;
-
- error = driver_register(&mc_driver->driver);
- if (error < 0) {
- pr_err("driver_register() failed for %s: %d\n",
- mc_driver->driver.name, error);
- return error;
- }
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(__fsl_mc_driver_register);
-
-/**
- * fsl_mc_driver_unregister - unregisters a device driver from the
- * MC bus
- */
-void fsl_mc_driver_unregister(struct fsl_mc_driver *mc_driver)
-{
- driver_unregister(&mc_driver->driver);
-}
-EXPORT_SYMBOL_GPL(fsl_mc_driver_unregister);
-
-/**
- * mc_get_version() - Retrieves the Management Complex firmware
- * version information
- * @mc_io: Pointer to opaque I/O object
- * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
- * @mc_ver_info: Returned version information structure
- *
- * Return: '0' on Success; Error code otherwise.
- */
-static int mc_get_version(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- struct mc_version *mc_ver_info)
-{
- struct mc_command cmd = { 0 };
- struct dpmng_rsp_get_version *rsp_params;
- int err;
-
- /* prepare command */
- cmd.header = mc_encode_cmd_header(DPMNG_CMDID_GET_VERSION,
- cmd_flags,
- 0);
-
- /* send command to mc*/
- err = mc_send_command(mc_io, &cmd);
- if (err)
- return err;
-
- /* retrieve response parameters */
- rsp_params = (struct dpmng_rsp_get_version *)cmd.params;
- mc_ver_info->revision = le32_to_cpu(rsp_params->revision);
- mc_ver_info->major = le32_to_cpu(rsp_params->version_major);
- mc_ver_info->minor = le32_to_cpu(rsp_params->version_minor);
-
- return 0;
-}
-
-/**
- * fsl_mc_get_root_dprc - function to traverse to the root dprc
- */
-static void fsl_mc_get_root_dprc(struct device *dev,
- struct device **root_dprc_dev)
-{
- if (!dev) {
- *root_dprc_dev = NULL;
- } else if (!dev_is_fsl_mc(dev)) {
- *root_dprc_dev = NULL;
- } else {
- *root_dprc_dev = dev;
- while (dev_is_fsl_mc((*root_dprc_dev)->parent))
- *root_dprc_dev = (*root_dprc_dev)->parent;
- }
-}
-
-static int get_dprc_attr(struct fsl_mc_io *mc_io,
- int container_id, struct dprc_attributes *attr)
-{
- u16 dprc_handle;
- int error;
-
- error = dprc_open(mc_io, 0, container_id, &dprc_handle);
- if (error < 0) {
- dev_err(mc_io->dev, "dprc_open() failed: %d\n", error);
- return error;
- }
-
- memset(attr, 0, sizeof(struct dprc_attributes));
- error = dprc_get_attributes(mc_io, 0, dprc_handle, attr);
- if (error < 0) {
- dev_err(mc_io->dev, "dprc_get_attributes() failed: %d\n",
- error);
- goto common_cleanup;
- }
-
- error = 0;
-
-common_cleanup:
- (void)dprc_close(mc_io, 0, dprc_handle);
- return error;
-}
-
-static int get_dprc_icid(struct fsl_mc_io *mc_io,
- int container_id, u16 *icid)
-{
- struct dprc_attributes attr;
- int error;
-
- error = get_dprc_attr(mc_io, container_id, &attr);
- if (error == 0)
- *icid = attr.icid;
-
- return error;
-}
-
-static int translate_mc_addr(struct fsl_mc_device *mc_dev,
- enum dprc_region_type mc_region_type,
- u64 mc_offset, phys_addr_t *phys_addr)
-{
- int i;
- struct device *root_dprc_dev;
- struct fsl_mc *mc;
-
- fsl_mc_get_root_dprc(&mc_dev->dev, &root_dprc_dev);
- mc = dev_get_drvdata(root_dprc_dev->parent);
-
- if (mc->num_translation_ranges == 0) {
- /*
- * Do identity mapping:
- */
- *phys_addr = mc_offset;
- return 0;
- }
-
- for (i = 0; i < mc->num_translation_ranges; i++) {
- struct fsl_mc_addr_translation_range *range =
- &mc->translation_ranges[i];
-
- if (mc_region_type == range->mc_region_type &&
- mc_offset >= range->start_mc_offset &&
- mc_offset < range->end_mc_offset) {
- *phys_addr = range->start_phys_addr +
- (mc_offset - range->start_mc_offset);
- return 0;
- }
- }
-
- return -EFAULT;
-}
-
-static int fsl_mc_device_get_mmio_regions(struct fsl_mc_device *mc_dev,
- struct fsl_mc_device *mc_bus_dev)
-{
- int i;
- int error;
- struct resource *regions;
- struct fsl_mc_obj_desc *obj_desc = &mc_dev->obj_desc;
- struct device *parent_dev = mc_dev->dev.parent;
- enum dprc_region_type mc_region_type;
-
- if (is_fsl_mc_bus_dprc(mc_dev) ||
- is_fsl_mc_bus_dpmcp(mc_dev)) {
- mc_region_type = DPRC_REGION_TYPE_MC_PORTAL;
- } else if (is_fsl_mc_bus_dpio(mc_dev)) {
- mc_region_type = DPRC_REGION_TYPE_QBMAN_PORTAL;
- } else {
- /*
- * This function should not have been called for this MC object
- * type, as this object type is not supposed to have MMIO
- * regions
- */
- return -EINVAL;
- }
-
- regions = kmalloc_array(obj_desc->region_count,
- sizeof(regions[0]), GFP_KERNEL);
- if (!regions)
- return -ENOMEM;
-
- for (i = 0; i < obj_desc->region_count; i++) {
- struct dprc_region_desc region_desc;
-
- error = dprc_get_obj_region(mc_bus_dev->mc_io,
- 0,
- mc_bus_dev->mc_handle,
- obj_desc->type,
- obj_desc->id, i, ®ion_desc);
- if (error < 0) {
- dev_err(parent_dev,
- "dprc_get_obj_region() failed: %d\n", error);
- goto error_cleanup_regions;
- }
-
- error = translate_mc_addr(mc_dev, mc_region_type,
- region_desc.base_offset,
- ®ions[i].start);
- if (error < 0) {
- dev_err(parent_dev,
- "Invalid MC offset: %#x (for %s.%d\'s region %d)\n",
- region_desc.base_offset,
- obj_desc->type, obj_desc->id, i);
- goto error_cleanup_regions;
- }
-
- regions[i].end = regions[i].start + region_desc.size - 1;
- regions[i].name = "fsl-mc object MMIO region";
- regions[i].flags = IORESOURCE_IO;
- if (region_desc.flags & DPRC_REGION_CACHEABLE)
- regions[i].flags |= IORESOURCE_CACHEABLE;
- }
-
- mc_dev->regions = regions;
- return 0;
-
-error_cleanup_regions:
- kfree(regions);
- return error;
-}
-
-/**
- * fsl_mc_is_root_dprc - function to check if a given device is a root dprc
- */
-bool fsl_mc_is_root_dprc(struct device *dev)
-{
- struct device *root_dprc_dev;
-
- fsl_mc_get_root_dprc(dev, &root_dprc_dev);
- if (!root_dprc_dev)
- return false;
- return dev == root_dprc_dev;
-}
-
-static void fsl_mc_device_release(struct device *dev)
-{
- struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
-
- kfree(mc_dev->regions);
-
- if (is_fsl_mc_bus_dprc(mc_dev))
- kfree(to_fsl_mc_bus(mc_dev));
- else
- kfree(mc_dev);
-}
-
-/**
- * Add a newly discovered fsl-mc device to be visible in Linux
- */
-int fsl_mc_device_add(struct fsl_mc_obj_desc *obj_desc,
- struct fsl_mc_io *mc_io,
- struct device *parent_dev,
- struct fsl_mc_device **new_mc_dev)
-{
- int error;
- struct fsl_mc_device *mc_dev = NULL;
- struct fsl_mc_bus *mc_bus = NULL;
- struct fsl_mc_device *parent_mc_dev;
-
- if (dev_is_fsl_mc(parent_dev))
- parent_mc_dev = to_fsl_mc_device(parent_dev);
- else
- parent_mc_dev = NULL;
-
- if (strcmp(obj_desc->type, "dprc") == 0) {
- /*
- * Allocate an MC bus device object:
- */
- mc_bus = kzalloc(sizeof(*mc_bus), GFP_KERNEL);
- if (!mc_bus)
- return -ENOMEM;
-
- mc_dev = &mc_bus->mc_dev;
- } else {
- /*
- * Allocate a regular fsl_mc_device object:
- */
- mc_dev = kzalloc(sizeof(*mc_dev), GFP_KERNEL);
- if (!mc_dev)
- return -ENOMEM;
- }
-
- mc_dev->obj_desc = *obj_desc;
- mc_dev->mc_io = mc_io;
- device_initialize(&mc_dev->dev);
- mc_dev->dev.parent = parent_dev;
- mc_dev->dev.bus = &fsl_mc_bus_type;
- mc_dev->dev.release = fsl_mc_device_release;
- mc_dev->dev.type = fsl_mc_get_device_type(obj_desc->type);
- if (!mc_dev->dev.type) {
- error = -ENODEV;
- dev_err(parent_dev, "unknown device type %s\n", obj_desc->type);
- goto error_cleanup_dev;
- }
- dev_set_name(&mc_dev->dev, "%s.%d", obj_desc->type, obj_desc->id);
-
- if (strcmp(obj_desc->type, "dprc") == 0) {
- struct fsl_mc_io *mc_io2;
-
- mc_dev->flags |= FSL_MC_IS_DPRC;
-
- /*
- * To get the DPRC's ICID, we need to open the DPRC
- * in get_dprc_icid(). For child DPRCs, we do so using the
- * parent DPRC's MC portal instead of the child DPRC's MC
- * portal, in case the child DPRC is already opened with
- * its own portal (e.g., the DPRC used by AIOP).
- *
- * NOTE: There cannot be more than one active open for a
- * given MC object, using the same MC portal.
- */
- if (parent_mc_dev) {
- /*
- * device being added is a child DPRC device
- */
- mc_io2 = parent_mc_dev->mc_io;
- } else {
- /*
- * device being added is the root DPRC device
- */
- if (!mc_io) {
- error = -EINVAL;
- goto error_cleanup_dev;
- }
-
- mc_io2 = mc_io;
- }
-
- error = get_dprc_icid(mc_io2, obj_desc->id, &mc_dev->icid);
- if (error < 0)
- goto error_cleanup_dev;
- } else {
- /*
- * A non-DPRC object has to be a child of a DPRC, use the
- * parent's ICID and interrupt domain.
- */
- mc_dev->icid = parent_mc_dev->icid;
- mc_dev->dma_mask = FSL_MC_DEFAULT_DMA_MASK;
- mc_dev->dev.dma_mask = &mc_dev->dma_mask;
- dev_set_msi_domain(&mc_dev->dev,
- dev_get_msi_domain(&parent_mc_dev->dev));
- }
-
- /*
- * Get MMIO regions for the device from the MC:
- *
- * NOTE: the root DPRC is a special case as its MMIO region is
- * obtained from the device tree
- */
- if (parent_mc_dev && obj_desc->region_count != 0) {
- error = fsl_mc_device_get_mmio_regions(mc_dev,
- parent_mc_dev);
- if (error < 0)
- goto error_cleanup_dev;
- }
-
- /* Objects are coherent, unless 'no shareability' flag set. */
- if (!(obj_desc->flags & FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY))
- arch_setup_dma_ops(&mc_dev->dev, 0, 0, NULL, true);
-
- /*
- * The device-specific probe callback will get invoked by device_add()
- */
- error = device_add(&mc_dev->dev);
- if (error < 0) {
- dev_err(parent_dev,
- "device_add() failed for device %s: %d\n",
- dev_name(&mc_dev->dev), error);
- goto error_cleanup_dev;
- }
-
- dev_dbg(parent_dev, "added %s\n", dev_name(&mc_dev->dev));
-
- *new_mc_dev = mc_dev;
- return 0;
-
-error_cleanup_dev:
- kfree(mc_dev->regions);
- kfree(mc_bus);
- kfree(mc_dev);
-
- return error;
-}
-EXPORT_SYMBOL_GPL(fsl_mc_device_add);
-
-/**
- * fsl_mc_device_remove - Remove an fsl-mc device from being visible to
- * Linux
- *
- * @mc_dev: Pointer to an fsl-mc device
- */
-void fsl_mc_device_remove(struct fsl_mc_device *mc_dev)
-{
- /*
- * The device-specific remove callback will get invoked by device_del()
- */
- device_del(&mc_dev->dev);
- put_device(&mc_dev->dev);
-}
-EXPORT_SYMBOL_GPL(fsl_mc_device_remove);
-
-static int parse_mc_ranges(struct device *dev,
- int *paddr_cells,
- int *mc_addr_cells,
- int *mc_size_cells,
- const __be32 **ranges_start)
-{
- const __be32 *prop;
- int range_tuple_cell_count;
- int ranges_len;
- int tuple_len;
- struct device_node *mc_node = dev->of_node;
-
- *ranges_start = of_get_property(mc_node, "ranges", &ranges_len);
- if (!(*ranges_start) || !ranges_len) {
- dev_warn(dev,
- "missing or empty ranges property for device tree node '%s'\n",
- mc_node->name);
- return 0;
- }
-
- *paddr_cells = of_n_addr_cells(mc_node);
-
- prop = of_get_property(mc_node, "#address-cells", NULL);
- if (prop)
- *mc_addr_cells = be32_to_cpup(prop);
- else
- *mc_addr_cells = *paddr_cells;
-
- prop = of_get_property(mc_node, "#size-cells", NULL);
- if (prop)
- *mc_size_cells = be32_to_cpup(prop);
- else
- *mc_size_cells = of_n_size_cells(mc_node);
-
- range_tuple_cell_count = *paddr_cells + *mc_addr_cells +
- *mc_size_cells;
-
- tuple_len = range_tuple_cell_count * sizeof(__be32);
- if (ranges_len % tuple_len != 0) {
- dev_err(dev, "malformed ranges property '%s'\n", mc_node->name);
- return -EINVAL;
- }
-
- return ranges_len / tuple_len;
-}
-
-static int get_mc_addr_translation_ranges(struct device *dev,
- struct fsl_mc_addr_translation_range
- **ranges,
- u8 *num_ranges)
-{
- int ret;
- int paddr_cells;
- int mc_addr_cells;
- int mc_size_cells;
- int i;
- const __be32 *ranges_start;
- const __be32 *cell;
-
- ret = parse_mc_ranges(dev,
- &paddr_cells,
- &mc_addr_cells,
- &mc_size_cells,
- &ranges_start);
- if (ret < 0)
- return ret;
-
- *num_ranges = ret;
- if (!ret) {
- /*
- * Missing or empty ranges property ("ranges;") for the
- * 'fsl,qoriq-mc' node. In this case, identity mapping
- * will be used.
- */
- *ranges = NULL;
- return 0;
- }
-
- *ranges = devm_kcalloc(dev, *num_ranges,
- sizeof(struct fsl_mc_addr_translation_range),
- GFP_KERNEL);
- if (!(*ranges))
- return -ENOMEM;
-
- cell = ranges_start;
- for (i = 0; i < *num_ranges; ++i) {
- struct fsl_mc_addr_translation_range *range = &(*ranges)[i];
-
- range->mc_region_type = of_read_number(cell, 1);
- range->start_mc_offset = of_read_number(cell + 1,
- mc_addr_cells - 1);
- cell += mc_addr_cells;
- range->start_phys_addr = of_read_number(cell, paddr_cells);
- cell += paddr_cells;
- range->end_mc_offset = range->start_mc_offset +
- of_read_number(cell, mc_size_cells);
-
- cell += mc_size_cells;
- }
-
- return 0;
-}
-
-/**
- * fsl_mc_bus_probe - callback invoked when the root MC bus is being
- * added
- */
-static int fsl_mc_bus_probe(struct platform_device *pdev)
-{
- struct fsl_mc_obj_desc obj_desc;
- int error;
- struct fsl_mc *mc;
- struct fsl_mc_device *mc_bus_dev = NULL;
- struct fsl_mc_io *mc_io = NULL;
- int container_id;
- phys_addr_t mc_portal_phys_addr;
- u32 mc_portal_size;
- struct mc_version mc_version;
- struct resource res;
-
- mc = devm_kzalloc(&pdev->dev, sizeof(*mc), GFP_KERNEL);
- if (!mc)
- return -ENOMEM;
-
- platform_set_drvdata(pdev, mc);
-
- /*
- * Get physical address of MC portal for the root DPRC:
- */
- error = of_address_to_resource(pdev->dev.of_node, 0, &res);
- if (error < 0) {
- dev_err(&pdev->dev,
- "of_address_to_resource() failed for %pOF\n",
- pdev->dev.of_node);
- return error;
- }
-
- mc_portal_phys_addr = res.start;
- mc_portal_size = resource_size(&res);
- error = fsl_create_mc_io(&pdev->dev, mc_portal_phys_addr,
- mc_portal_size, NULL,
- FSL_MC_IO_ATOMIC_CONTEXT_PORTAL, &mc_io);
- if (error < 0)
- return error;
-
- error = mc_get_version(mc_io, 0, &mc_version);
- if (error != 0) {
- dev_err(&pdev->dev,
- "mc_get_version() failed with error %d\n", error);
- goto error_cleanup_mc_io;
- }
-
- dev_info(&pdev->dev, "MC firmware version: %u.%u.%u\n",
- mc_version.major, mc_version.minor, mc_version.revision);
-
- error = get_mc_addr_translation_ranges(&pdev->dev,
- &mc->translation_ranges,
- &mc->num_translation_ranges);
- if (error < 0)
- goto error_cleanup_mc_io;
-
- error = dprc_get_container_id(mc_io, 0, &container_id);
- if (error < 0) {
- dev_err(&pdev->dev,
- "dprc_get_container_id() failed: %d\n", error);
- goto error_cleanup_mc_io;
- }
-
- memset(&obj_desc, 0, sizeof(struct fsl_mc_obj_desc));
- error = dprc_get_api_version(mc_io, 0,
- &obj_desc.ver_major,
- &obj_desc.ver_minor);
- if (error < 0)
- goto error_cleanup_mc_io;
-
- obj_desc.vendor = FSL_MC_VENDOR_FREESCALE;
- strcpy(obj_desc.type, "dprc");
- obj_desc.id = container_id;
- obj_desc.irq_count = 1;
- obj_desc.region_count = 0;
-
- error = fsl_mc_device_add(&obj_desc, mc_io, &pdev->dev, &mc_bus_dev);
- if (error < 0)
- goto error_cleanup_mc_io;
-
- mc->root_mc_bus_dev = mc_bus_dev;
- return 0;
-
-error_cleanup_mc_io:
- fsl_destroy_mc_io(mc_io);
- return error;
-}
-
-/**
- * fsl_mc_bus_remove - callback invoked when the root MC bus is being
- * removed
- */
-static int fsl_mc_bus_remove(struct platform_device *pdev)
-{
- struct fsl_mc *mc = platform_get_drvdata(pdev);
-
- if (!fsl_mc_is_root_dprc(&mc->root_mc_bus_dev->dev))
- return -EINVAL;
-
- fsl_mc_device_remove(mc->root_mc_bus_dev);
-
- fsl_destroy_mc_io(mc->root_mc_bus_dev->mc_io);
- mc->root_mc_bus_dev->mc_io = NULL;
-
- return 0;
-}
-
-static const struct of_device_id fsl_mc_bus_match_table[] = {
- {.compatible = "fsl,qoriq-mc",},
- {},
-};
-
-MODULE_DEVICE_TABLE(of, fsl_mc_bus_match_table);
-
-static struct platform_driver fsl_mc_bus_driver = {
- .driver = {
- .name = "fsl_mc_bus",
- .pm = NULL,
- .of_match_table = fsl_mc_bus_match_table,
- },
- .probe = fsl_mc_bus_probe,
- .remove = fsl_mc_bus_remove,
-};
-
-static int __init fsl_mc_bus_driver_init(void)
-{
- int error;
-
- error = bus_register(&fsl_mc_bus_type);
- if (error < 0) {
- pr_err("bus type registration failed: %d\n", error);
- goto error_cleanup_cache;
- }
-
- error = platform_driver_register(&fsl_mc_bus_driver);
- if (error < 0) {
- pr_err("platform_driver_register() failed: %d\n", error);
- goto error_cleanup_bus;
- }
-
- error = dprc_driver_init();
- if (error < 0)
- goto error_cleanup_driver;
-
- error = fsl_mc_allocator_driver_init();
- if (error < 0)
- goto error_cleanup_dprc_driver;
-
- return 0;
-
-error_cleanup_dprc_driver:
- dprc_driver_exit();
-
-error_cleanup_driver:
- platform_driver_unregister(&fsl_mc_bus_driver);
-
-error_cleanup_bus:
- bus_unregister(&fsl_mc_bus_type);
-
-error_cleanup_cache:
- return error;
-}
-postcore_initcall(fsl_mc_bus_driver_init);
diff --git a/drivers/staging/fsl-mc/bus/fsl-mc-msi.c b/drivers/staging/fsl-mc/bus/fsl-mc-msi.c
deleted file mode 100644
index 971ad87..0000000
--- a/drivers/staging/fsl-mc/bus/fsl-mc-msi.c
+++ /dev/null
@@ -1,284 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Freescale Management Complex (MC) bus driver MSI support
- *
- * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
- * Author: German Rivera <[email protected]>
- *
- */
-
-#include <linux/of_device.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/irq.h>
-#include <linux/irqdomain.h>
-#include <linux/msi.h>
-#include "fsl-mc-private.h"
-
-#ifdef GENERIC_MSI_DOMAIN_OPS
-/*
- * Generate a unique ID identifying the interrupt (only used within the MSI
- * irqdomain. Combine the icid with the interrupt index.
- */
-static irq_hw_number_t fsl_mc_domain_calc_hwirq(struct fsl_mc_device *dev,
- struct msi_desc *desc)
-{
- /*
- * Make the base hwirq value for ICID*10000 so it is readable
- * as a decimal value in /proc/interrupts.
- */
- return (irq_hw_number_t)(desc->fsl_mc.msi_index + (dev->icid * 10000));
-}
-
-static void fsl_mc_msi_set_desc(msi_alloc_info_t *arg,
- struct msi_desc *desc)
-{
- arg->desc = desc;
- arg->hwirq = fsl_mc_domain_calc_hwirq(to_fsl_mc_device(desc->dev),
- desc);
-}
-#else
-#define fsl_mc_msi_set_desc NULL
-#endif
-
-static void fsl_mc_msi_update_dom_ops(struct msi_domain_info *info)
-{
- struct msi_domain_ops *ops = info->ops;
-
- if (!ops)
- return;
-
- /*
- * set_desc should not be set by the caller
- */
- if (!ops->set_desc)
- ops->set_desc = fsl_mc_msi_set_desc;
-}
-
-static void __fsl_mc_msi_write_msg(struct fsl_mc_device *mc_bus_dev,
- struct fsl_mc_device_irq *mc_dev_irq)
-{
- int error;
- struct fsl_mc_device *owner_mc_dev = mc_dev_irq->mc_dev;
- struct msi_desc *msi_desc = mc_dev_irq->msi_desc;
- struct dprc_irq_cfg irq_cfg;
-
- /*
- * msi_desc->msg.address is 0x0 when this function is invoked in
- * the free_irq() code path. In this case, for the MC, we don't
- * really need to "unprogram" the MSI, so we just return.
- */
- if (msi_desc->msg.address_lo == 0x0 && msi_desc->msg.address_hi == 0x0)
- return;
-
- if (!owner_mc_dev)
- return;
-
- irq_cfg.paddr = ((u64)msi_desc->msg.address_hi << 32) |
- msi_desc->msg.address_lo;
- irq_cfg.val = msi_desc->msg.data;
- irq_cfg.irq_num = msi_desc->irq;
-
- if (owner_mc_dev == mc_bus_dev) {
- /*
- * IRQ is for the mc_bus_dev's DPRC itself
- */
- error = dprc_set_irq(mc_bus_dev->mc_io,
- MC_CMD_FLAG_INTR_DIS | MC_CMD_FLAG_PRI,
- mc_bus_dev->mc_handle,
- mc_dev_irq->dev_irq_index,
- &irq_cfg);
- if (error < 0) {
- dev_err(&owner_mc_dev->dev,
- "dprc_set_irq() failed: %d\n", error);
- }
- } else {
- /*
- * IRQ is for for a child device of mc_bus_dev
- */
- error = dprc_set_obj_irq(mc_bus_dev->mc_io,
- MC_CMD_FLAG_INTR_DIS | MC_CMD_FLAG_PRI,
- mc_bus_dev->mc_handle,
- owner_mc_dev->obj_desc.type,
- owner_mc_dev->obj_desc.id,
- mc_dev_irq->dev_irq_index,
- &irq_cfg);
- if (error < 0) {
- dev_err(&owner_mc_dev->dev,
- "dprc_obj_set_irq() failed: %d\n", error);
- }
- }
-}
-
-/*
- * NOTE: This function is invoked with interrupts disabled
- */
-static void fsl_mc_msi_write_msg(struct irq_data *irq_data,
- struct msi_msg *msg)
-{
- struct msi_desc *msi_desc = irq_data_get_msi_desc(irq_data);
- struct fsl_mc_device *mc_bus_dev = to_fsl_mc_device(msi_desc->dev);
- struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
- struct fsl_mc_device_irq *mc_dev_irq =
- &mc_bus->irq_resources[msi_desc->fsl_mc.msi_index];
-
- msi_desc->msg = *msg;
-
- /*
- * Program the MSI (paddr, value) pair in the device:
- */
- __fsl_mc_msi_write_msg(mc_bus_dev, mc_dev_irq);
-}
-
-static void fsl_mc_msi_update_chip_ops(struct msi_domain_info *info)
-{
- struct irq_chip *chip = info->chip;
-
- if (!chip)
- return;
-
- /*
- * irq_write_msi_msg should not be set by the caller
- */
- if (!chip->irq_write_msi_msg)
- chip->irq_write_msi_msg = fsl_mc_msi_write_msg;
-}
-
-/**
- * fsl_mc_msi_create_irq_domain - Create a fsl-mc MSI interrupt domain
- * @np: Optional device-tree node of the interrupt controller
- * @info: MSI domain info
- * @parent: Parent irq domain
- *
- * Updates the domain and chip ops and creates a fsl-mc MSI
- * interrupt domain.
- *
- * Returns:
- * A domain pointer or NULL in case of failure.
- */
-struct irq_domain *fsl_mc_msi_create_irq_domain(struct fwnode_handle *fwnode,
- struct msi_domain_info *info,
- struct irq_domain *parent)
-{
- struct irq_domain *domain;
-
- if (info->flags & MSI_FLAG_USE_DEF_DOM_OPS)
- fsl_mc_msi_update_dom_ops(info);
- if (info->flags & MSI_FLAG_USE_DEF_CHIP_OPS)
- fsl_mc_msi_update_chip_ops(info);
-
- domain = msi_create_irq_domain(fwnode, info, parent);
- if (domain)
- irq_domain_update_bus_token(domain, DOMAIN_BUS_FSL_MC_MSI);
-
- return domain;
-}
-
-int fsl_mc_find_msi_domain(struct device *mc_platform_dev,
- struct irq_domain **mc_msi_domain)
-{
- struct irq_domain *msi_domain;
- struct device_node *mc_of_node = mc_platform_dev->of_node;
-
- msi_domain = of_msi_get_domain(mc_platform_dev, mc_of_node,
- DOMAIN_BUS_FSL_MC_MSI);
- if (!msi_domain) {
- pr_err("Unable to find fsl-mc MSI domain for %pOF\n",
- mc_of_node);
-
- return -ENOENT;
- }
-
- *mc_msi_domain = msi_domain;
- return 0;
-}
-
-static void fsl_mc_msi_free_descs(struct device *dev)
-{
- struct msi_desc *desc, *tmp;
-
- list_for_each_entry_safe(desc, tmp, dev_to_msi_list(dev), list) {
- list_del(&desc->list);
- free_msi_entry(desc);
- }
-}
-
-static int fsl_mc_msi_alloc_descs(struct device *dev, unsigned int irq_count)
-
-{
- unsigned int i;
- int error;
- struct msi_desc *msi_desc;
-
- for (i = 0; i < irq_count; i++) {
- msi_desc = alloc_msi_entry(dev, 1, NULL);
- if (!msi_desc) {
- dev_err(dev, "Failed to allocate msi entry\n");
- error = -ENOMEM;
- goto cleanup_msi_descs;
- }
-
- msi_desc->fsl_mc.msi_index = i;
- INIT_LIST_HEAD(&msi_desc->list);
- list_add_tail(&msi_desc->list, dev_to_msi_list(dev));
- }
-
- return 0;
-
-cleanup_msi_descs:
- fsl_mc_msi_free_descs(dev);
- return error;
-}
-
-int fsl_mc_msi_domain_alloc_irqs(struct device *dev,
- unsigned int irq_count)
-{
- struct irq_domain *msi_domain;
- int error;
-
- if (!list_empty(dev_to_msi_list(dev)))
- return -EINVAL;
-
- error = fsl_mc_msi_alloc_descs(dev, irq_count);
- if (error < 0)
- return error;
-
- msi_domain = dev_get_msi_domain(dev);
- if (!msi_domain) {
- error = -EINVAL;
- goto cleanup_msi_descs;
- }
-
- /*
- * NOTE: Calling this function will trigger the invocation of the
- * its_fsl_mc_msi_prepare() callback
- */
- error = msi_domain_alloc_irqs(msi_domain, dev, irq_count);
-
- if (error) {
- dev_err(dev, "Failed to allocate IRQs\n");
- goto cleanup_msi_descs;
- }
-
- return 0;
-
-cleanup_msi_descs:
- fsl_mc_msi_free_descs(dev);
- return error;
-}
-
-void fsl_mc_msi_domain_free_irqs(struct device *dev)
-{
- struct irq_domain *msi_domain;
-
- msi_domain = dev_get_msi_domain(dev);
- if (!msi_domain)
- return;
-
- msi_domain_free_irqs(msi_domain, dev);
-
- if (list_empty(dev_to_msi_list(dev)))
- return;
-
- fsl_mc_msi_free_descs(dev);
-}
diff --git a/drivers/staging/fsl-mc/bus/fsl-mc-private.h b/drivers/staging/fsl-mc/bus/fsl-mc-private.h
deleted file mode 100644
index 83b89d6..0000000
--- a/drivers/staging/fsl-mc/bus/fsl-mc-private.h
+++ /dev/null
@@ -1,475 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Freescale Management Complex (MC) bus private declarations
- *
- * Copyright (C) 2016 Freescale Semiconductor, Inc.
- *
- */
-#ifndef _FSL_MC_PRIVATE_H_
-#define _FSL_MC_PRIVATE_H_
-
-#include "../include/mc.h"
-#include <linux/mutex.h>
-
-/*
- * Data Path Management Complex (DPMNG) General API
- */
-
-/* DPMNG command versioning */
-#define DPMNG_CMD_BASE_VERSION 1
-#define DPMNG_CMD_ID_OFFSET 4
-
-#define DPMNG_CMD(id) (((id) << DPMNG_CMD_ID_OFFSET) | DPMNG_CMD_BASE_VERSION)
-
-/* DPMNG command IDs */
-#define DPMNG_CMDID_GET_VERSION DPMNG_CMD(0x831)
-
-struct dpmng_rsp_get_version {
- __le32 revision;
- __le32 version_major;
- __le32 version_minor;
-};
-
-/*
- * Data Path Management Command Portal (DPMCP) API
- */
-
-/* Minimal supported DPMCP Version */
-#define DPMCP_MIN_VER_MAJOR 3
-#define DPMCP_MIN_VER_MINOR 0
-
-/* DPMCP command versioning */
-#define DPMCP_CMD_BASE_VERSION 1
-#define DPMCP_CMD_ID_OFFSET 4
-
-#define DPMCP_CMD(id) (((id) << DPMCP_CMD_ID_OFFSET) | DPMCP_CMD_BASE_VERSION)
-
-/* DPMCP command IDs */
-#define DPMCP_CMDID_CLOSE DPMCP_CMD(0x800)
-#define DPMCP_CMDID_OPEN DPMCP_CMD(0x80b)
-#define DPMCP_CMDID_RESET DPMCP_CMD(0x005)
-
-struct dpmcp_cmd_open {
- __le32 dpmcp_id;
-};
-
-/*
- * Initialization and runtime control APIs for DPMCP
- */
-int dpmcp_open(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- int dpmcp_id,
- u16 *token);
-
-int dpmcp_close(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token);
-
-int dpmcp_reset(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token);
-
-/*
- * Data Path Resource Container (DPRC) API
- */
-
-/* Minimal supported DPRC Version */
-#define DPRC_MIN_VER_MAJOR 6
-#define DPRC_MIN_VER_MINOR 0
-
-/* DPRC command versioning */
-#define DPRC_CMD_BASE_VERSION 1
-#define DPRC_CMD_ID_OFFSET 4
-
-#define DPRC_CMD(id) (((id) << DPRC_CMD_ID_OFFSET) | DPRC_CMD_BASE_VERSION)
-
-/* DPRC command IDs */
-#define DPRC_CMDID_CLOSE DPRC_CMD(0x800)
-#define DPRC_CMDID_OPEN DPRC_CMD(0x805)
-#define DPRC_CMDID_GET_API_VERSION DPRC_CMD(0xa05)
-
-#define DPRC_CMDID_GET_ATTR DPRC_CMD(0x004)
-
-#define DPRC_CMDID_SET_IRQ DPRC_CMD(0x010)
-#define DPRC_CMDID_SET_IRQ_ENABLE DPRC_CMD(0x012)
-#define DPRC_CMDID_SET_IRQ_MASK DPRC_CMD(0x014)
-#define DPRC_CMDID_GET_IRQ_STATUS DPRC_CMD(0x016)
-#define DPRC_CMDID_CLEAR_IRQ_STATUS DPRC_CMD(0x017)
-
-#define DPRC_CMDID_GET_CONT_ID DPRC_CMD(0x830)
-#define DPRC_CMDID_GET_OBJ_COUNT DPRC_CMD(0x159)
-#define DPRC_CMDID_GET_OBJ DPRC_CMD(0x15A)
-#define DPRC_CMDID_GET_OBJ_REG DPRC_CMD(0x15E)
-#define DPRC_CMDID_SET_OBJ_IRQ DPRC_CMD(0x15F)
-
-struct dprc_cmd_open {
- __le32 container_id;
-};
-
-struct dprc_cmd_set_irq {
- /* cmd word 0 */
- __le32 irq_val;
- u8 irq_index;
- u8 pad[3];
- /* cmd word 1 */
- __le64 irq_addr;
- /* cmd word 2 */
- __le32 irq_num;
-};
-
-#define DPRC_ENABLE 0x1
-
-struct dprc_cmd_set_irq_enable {
- u8 enable;
- u8 pad[3];
- u8 irq_index;
-};
-
-struct dprc_cmd_set_irq_mask {
- __le32 mask;
- u8 irq_index;
-};
-
-struct dprc_cmd_get_irq_status {
- __le32 status;
- u8 irq_index;
-};
-
-struct dprc_rsp_get_irq_status {
- __le32 status;
-};
-
-struct dprc_cmd_clear_irq_status {
- __le32 status;
- u8 irq_index;
-};
-
-struct dprc_rsp_get_attributes {
- /* response word 0 */
- __le32 container_id;
- __le16 icid;
- __le16 pad;
- /* response word 1 */
- __le32 options;
- __le32 portal_id;
-};
-
-struct dprc_rsp_get_obj_count {
- __le32 pad;
- __le32 obj_count;
-};
-
-struct dprc_cmd_get_obj {
- __le32 obj_index;
-};
-
-struct dprc_rsp_get_obj {
- /* response word 0 */
- __le32 pad0;
- __le32 id;
- /* response word 1 */
- __le16 vendor;
- u8 irq_count;
- u8 region_count;
- __le32 state;
- /* response word 2 */
- __le16 version_major;
- __le16 version_minor;
- __le16 flags;
- __le16 pad1;
- /* response word 3-4 */
- u8 type[16];
- /* response word 5-6 */
- u8 label[16];
-};
-
-struct dprc_cmd_get_obj_region {
- /* cmd word 0 */
- __le32 obj_id;
- __le16 pad0;
- u8 region_index;
- u8 pad1;
- /* cmd word 1-2 */
- __le64 pad2[2];
- /* cmd word 3-4 */
- u8 obj_type[16];
-};
-
-struct dprc_rsp_get_obj_region {
- /* response word 0 */
- __le64 pad;
- /* response word 1 */
- __le64 base_addr;
- /* response word 2 */
- __le32 size;
-};
-
-struct dprc_cmd_set_obj_irq {
- /* cmd word 0 */
- __le32 irq_val;
- u8 irq_index;
- u8 pad[3];
- /* cmd word 1 */
- __le64 irq_addr;
- /* cmd word 2 */
- __le32 irq_num;
- __le32 obj_id;
- /* cmd word 3-4 */
- u8 obj_type[16];
-};
-
-/*
- * DPRC API for managing and querying DPAA resources
- */
-int dprc_open(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- int container_id,
- u16 *token);
-
-int dprc_close(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token);
-
-/* DPRC IRQ events */
-
-/* IRQ event - Indicates that a new object added to the container */
-#define DPRC_IRQ_EVENT_OBJ_ADDED 0x00000001
-/* IRQ event - Indicates that an object was removed from the container */
-#define DPRC_IRQ_EVENT_OBJ_REMOVED 0x00000002
-/*
- * IRQ event - Indicates that one of the descendant containers that opened by
- * this container is destroyed
- */
-#define DPRC_IRQ_EVENT_CONTAINER_DESTROYED 0x00000010
-
-/*
- * IRQ event - Indicates that on one of the container's opened object is
- * destroyed
- */
-#define DPRC_IRQ_EVENT_OBJ_DESTROYED 0x00000020
-
-/* Irq event - Indicates that object is created at the container */
-#define DPRC_IRQ_EVENT_OBJ_CREATED 0x00000040
-
-/**
- * struct dprc_irq_cfg - IRQ configuration
- * @paddr: Address that must be written to signal a message-based interrupt
- * @val: Value to write into irq_addr address
- * @irq_num: A user defined number associated with this IRQ
- */
-struct dprc_irq_cfg {
- phys_addr_t paddr;
- u32 val;
- int irq_num;
-};
-
-int dprc_set_irq(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- u8 irq_index,
- struct dprc_irq_cfg *irq_cfg);
-
-int dprc_set_irq_enable(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- u8 irq_index,
- u8 en);
-
-int dprc_set_irq_mask(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- u8 irq_index,
- u32 mask);
-
-int dprc_get_irq_status(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- u8 irq_index,
- u32 *status);
-
-int dprc_clear_irq_status(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- u8 irq_index,
- u32 status);
-
-/**
- * struct dprc_attributes - Container attributes
- * @container_id: Container's ID
- * @icid: Container's ICID
- * @portal_id: Container's portal ID
- * @options: Container's options as set at container's creation
- */
-struct dprc_attributes {
- int container_id;
- u16 icid;
- int portal_id;
- u64 options;
-};
-
-int dprc_get_attributes(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- struct dprc_attributes *attributes);
-
-int dprc_get_obj_count(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- int *obj_count);
-
-int dprc_get_obj(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- int obj_index,
- struct fsl_mc_obj_desc *obj_desc);
-
-int dprc_set_obj_irq(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- char *obj_type,
- int obj_id,
- u8 irq_index,
- struct dprc_irq_cfg *irq_cfg);
-
-/* Region flags */
-/* Cacheable - Indicates that region should be mapped as cacheable */
-#define DPRC_REGION_CACHEABLE 0x00000001
-
-/**
- * enum dprc_region_type - Region type
- * @DPRC_REGION_TYPE_MC_PORTAL: MC portal region
- * @DPRC_REGION_TYPE_QBMAN_PORTAL: Qbman portal region
- */
-enum dprc_region_type {
- DPRC_REGION_TYPE_MC_PORTAL,
- DPRC_REGION_TYPE_QBMAN_PORTAL
-};
-
-/**
- * struct dprc_region_desc - Mappable region descriptor
- * @base_offset: Region offset from region's base address.
- * For DPMCP and DPRC objects, region base is offset from SoC MC portals
- * base address; For DPIO, region base is offset from SoC QMan portals
- * base address
- * @size: Region size (in bytes)
- * @flags: Region attributes
- * @type: Portal region type
- */
-struct dprc_region_desc {
- u32 base_offset;
- u32 size;
- u32 flags;
- enum dprc_region_type type;
-};
-
-int dprc_get_obj_region(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 token,
- char *obj_type,
- int obj_id,
- u8 region_index,
- struct dprc_region_desc *region_desc);
-
-int dprc_get_api_version(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- u16 *major_ver,
- u16 *minor_ver);
-
-int dprc_get_container_id(struct fsl_mc_io *mc_io,
- u32 cmd_flags,
- int *container_id);
-
-/**
- * Maximum number of total IRQs that can be pre-allocated for an MC bus'
- * IRQ pool
- */
-#define FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS 256
-
-/**
- * struct fsl_mc_resource_pool - Pool of MC resources of a given
- * type
- * @type: type of resources in the pool
- * @max_count: maximum number of resources in the pool
- * @free_count: number of free resources in the pool
- * @mutex: mutex to serialize access to the pool's free list
- * @free_list: anchor node of list of free resources in the pool
- * @mc_bus: pointer to the MC bus that owns this resource pool
- */
-struct fsl_mc_resource_pool {
- enum fsl_mc_pool_type type;
- int max_count;
- int free_count;
- struct mutex mutex; /* serializes access to free_list */
- struct list_head free_list;
- struct fsl_mc_bus *mc_bus;
-};
-
-/**
- * struct fsl_mc_bus - logical bus that corresponds to a physical DPRC
- * @mc_dev: fsl-mc device for the bus device itself.
- * @resource_pools: array of resource pools (one pool per resource type)
- * for this MC bus. These resources represent allocatable entities
- * from the physical DPRC.
- * @irq_resources: Pointer to array of IRQ objects for the IRQ pool
- * @scan_mutex: Serializes bus scanning
- * @dprc_attr: DPRC attributes
- */
-struct fsl_mc_bus {
- struct fsl_mc_device mc_dev;
- struct fsl_mc_resource_pool resource_pools[FSL_MC_NUM_POOL_TYPES];
- struct fsl_mc_device_irq *irq_resources;
- struct mutex scan_mutex; /* serializes bus scanning */
- struct dprc_attributes dprc_attr;
-};
-
-#define to_fsl_mc_bus(_mc_dev) \
- container_of(_mc_dev, struct fsl_mc_bus, mc_dev)
-
-int __must_check fsl_mc_device_add(struct fsl_mc_obj_desc *obj_desc,
- struct fsl_mc_io *mc_io,
- struct device *parent_dev,
- struct fsl_mc_device **new_mc_dev);
-
-void fsl_mc_device_remove(struct fsl_mc_device *mc_dev);
-
-int __init dprc_driver_init(void);
-
-void dprc_driver_exit(void);
-
-int __init fsl_mc_allocator_driver_init(void);
-
-void fsl_mc_init_all_resource_pools(struct fsl_mc_device *mc_bus_dev);
-
-void fsl_mc_cleanup_all_resource_pools(struct fsl_mc_device *mc_bus_dev);
-
-int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus,
- enum fsl_mc_pool_type pool_type,
- struct fsl_mc_resource
- **new_resource);
-
-void fsl_mc_resource_free(struct fsl_mc_resource *resource);
-
-int fsl_mc_msi_domain_alloc_irqs(struct device *dev,
- unsigned int irq_count);
-
-void fsl_mc_msi_domain_free_irqs(struct device *dev);
-
-int fsl_mc_find_msi_domain(struct device *mc_platform_dev,
- struct irq_domain **mc_msi_domain);
-
-int fsl_mc_populate_irq_pool(struct fsl_mc_bus *mc_bus,
- unsigned int irq_count);
-
-void fsl_mc_cleanup_irq_pool(struct fsl_mc_bus *mc_bus);
-
-int __must_check fsl_create_mc_io(struct device *dev,
- phys_addr_t mc_portal_phys_addr,
- u32 mc_portal_size,
- struct fsl_mc_device *dpmcp_dev,
- u32 flags, struct fsl_mc_io **new_mc_io);
-
-void fsl_destroy_mc_io(struct fsl_mc_io *mc_io);
-
-bool fsl_mc_is_root_dprc(struct device *dev);
-
-#endif /* _FSL_MC_PRIVATE_H_ */
diff --git a/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c b/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c
index 5064d5d..b365fbb 100644
--- a/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c
+++ b/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c
@@ -13,7 +13,7 @@
#include <linux/msi.h>
#include <linux/of.h>
#include <linux/of_irq.h>
-#include "../include/mc.h"
+#include <linux/fsl/mc.h>
static struct irq_chip its_msi_irq_chip = {
.name = "ITS-fMSI",
diff --git a/drivers/staging/fsl-mc/bus/mc-io.c b/drivers/staging/fsl-mc/bus/mc-io.c
deleted file mode 100644
index 7e6fb36..0000000
--- a/drivers/staging/fsl-mc/bus/mc-io.c
+++ /dev/null
@@ -1,268 +0,0 @@
-// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
-/*
- * Copyright 2013-2016 Freescale Semiconductor Inc.
- *
- */
-
-#include <linux/io.h>
-#include "../include/mc.h"
-
-#include "fsl-mc-private.h"
-
-static int fsl_mc_io_set_dpmcp(struct fsl_mc_io *mc_io,
- struct fsl_mc_device *dpmcp_dev)
-{
- int error;
-
- if (mc_io->dpmcp_dev)
- return -EINVAL;
-
- if (dpmcp_dev->mc_io)
- return -EINVAL;
-
- error = dpmcp_open(mc_io,
- 0,
- dpmcp_dev->obj_desc.id,
- &dpmcp_dev->mc_handle);
- if (error < 0)
- return error;
-
- mc_io->dpmcp_dev = dpmcp_dev;
- dpmcp_dev->mc_io = mc_io;
- return 0;
-}
-
-static void fsl_mc_io_unset_dpmcp(struct fsl_mc_io *mc_io)
-{
- int error;
- struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
-
- error = dpmcp_close(mc_io,
- 0,
- dpmcp_dev->mc_handle);
- if (error < 0) {
- dev_err(&dpmcp_dev->dev, "dpmcp_close() failed: %d\n",
- error);
- }
-
- mc_io->dpmcp_dev = NULL;
- dpmcp_dev->mc_io = NULL;
-}
-
-/**
- * Creates an MC I/O object
- *
- * @dev: device to be associated with the MC I/O object
- * @mc_portal_phys_addr: physical address of the MC portal to use
- * @mc_portal_size: size in bytes of the MC portal
- * @dpmcp-dev: Pointer to the DPMCP object associated with this MC I/O
- * object or NULL if none.
- * @flags: flags for the new MC I/O object
- * @new_mc_io: Area to return pointer to newly created MC I/O object
- *
- * Returns '0' on Success; Error code otherwise.
- */
-int __must_check fsl_create_mc_io(struct device *dev,
- phys_addr_t mc_portal_phys_addr,
- u32 mc_portal_size,
- struct fsl_mc_device *dpmcp_dev,
- u32 flags, struct fsl_mc_io **new_mc_io)
-{
- int error;
- struct fsl_mc_io *mc_io;
- void __iomem *mc_portal_virt_addr;
- struct resource *res;
-
- mc_io = devm_kzalloc(dev, sizeof(*mc_io), GFP_KERNEL);
- if (!mc_io)
- return -ENOMEM;
-
- mc_io->dev = dev;
- mc_io->flags = flags;
- mc_io->portal_phys_addr = mc_portal_phys_addr;
- mc_io->portal_size = mc_portal_size;
- if (flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
- spin_lock_init(&mc_io->spinlock);
- else
- mutex_init(&mc_io->mutex);
-
- res = devm_request_mem_region(dev,
- mc_portal_phys_addr,
- mc_portal_size,
- "mc_portal");
- if (!res) {
- dev_err(dev,
- "devm_request_mem_region failed for MC portal %pa\n",
- &mc_portal_phys_addr);
- return -EBUSY;
- }
-
- mc_portal_virt_addr = devm_ioremap_nocache(dev,
- mc_portal_phys_addr,
- mc_portal_size);
- if (!mc_portal_virt_addr) {
- dev_err(dev,
- "devm_ioremap_nocache failed for MC portal %pa\n",
- &mc_portal_phys_addr);
- return -ENXIO;
- }
-
- mc_io->portal_virt_addr = mc_portal_virt_addr;
- if (dpmcp_dev) {
- error = fsl_mc_io_set_dpmcp(mc_io, dpmcp_dev);
- if (error < 0)
- goto error_destroy_mc_io;
- }
-
- *new_mc_io = mc_io;
- return 0;
-
-error_destroy_mc_io:
- fsl_destroy_mc_io(mc_io);
- return error;
-}
-
-/**
- * Destroys an MC I/O object
- *
- * @mc_io: MC I/O object to destroy
- */
-void fsl_destroy_mc_io(struct fsl_mc_io *mc_io)
-{
- struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
-
- if (dpmcp_dev)
- fsl_mc_io_unset_dpmcp(mc_io);
-
- devm_iounmap(mc_io->dev, mc_io->portal_virt_addr);
- devm_release_mem_region(mc_io->dev,
- mc_io->portal_phys_addr,
- mc_io->portal_size);
-
- mc_io->portal_virt_addr = NULL;
- devm_kfree(mc_io->dev, mc_io);
-}
-
-/**
- * fsl_mc_portal_allocate - Allocates an MC portal
- *
- * @mc_dev: MC device for which the MC portal is to be allocated
- * @mc_io_flags: Flags for the fsl_mc_io object that wraps the allocated
- * MC portal.
- * @new_mc_io: Pointer to area where the pointer to the fsl_mc_io object
- * that wraps the allocated MC portal is to be returned
- *
- * This function allocates an MC portal from the device's parent DPRC,
- * from the corresponding MC bus' pool of MC portals and wraps
- * it in a new fsl_mc_io object. If 'mc_dev' is a DPRC itself, the
- * portal is allocated from its own MC bus.
- */
-int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
- u16 mc_io_flags,
- struct fsl_mc_io **new_mc_io)
-{
- struct fsl_mc_device *mc_bus_dev;
- struct fsl_mc_bus *mc_bus;
- phys_addr_t mc_portal_phys_addr;
- size_t mc_portal_size;
- struct fsl_mc_device *dpmcp_dev;
- int error = -EINVAL;
- struct fsl_mc_resource *resource = NULL;
- struct fsl_mc_io *mc_io = NULL;
-
- if (mc_dev->flags & FSL_MC_IS_DPRC) {
- mc_bus_dev = mc_dev;
- } else {
- if (!dev_is_fsl_mc(mc_dev->dev.parent))
- return error;
-
- mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
- }
-
- mc_bus = to_fsl_mc_bus(mc_bus_dev);
- *new_mc_io = NULL;
- error = fsl_mc_resource_allocate(mc_bus, FSL_MC_POOL_DPMCP, &resource);
- if (error < 0)
- return error;
-
- error = -EINVAL;
- dpmcp_dev = resource->data;
-
- if (dpmcp_dev->obj_desc.ver_major < DPMCP_MIN_VER_MAJOR ||
- (dpmcp_dev->obj_desc.ver_major == DPMCP_MIN_VER_MAJOR &&
- dpmcp_dev->obj_desc.ver_minor < DPMCP_MIN_VER_MINOR)) {
- dev_err(&dpmcp_dev->dev,
- "ERROR: Version %d.%d of DPMCP not supported.\n",
- dpmcp_dev->obj_desc.ver_major,
- dpmcp_dev->obj_desc.ver_minor);
- error = -ENOTSUPP;
- goto error_cleanup_resource;
- }
-
- mc_portal_phys_addr = dpmcp_dev->regions[0].start;
- mc_portal_size = resource_size(dpmcp_dev->regions);
-
- error = fsl_create_mc_io(&mc_bus_dev->dev,
- mc_portal_phys_addr,
- mc_portal_size, dpmcp_dev,
- mc_io_flags, &mc_io);
- if (error < 0)
- goto error_cleanup_resource;
-
- *new_mc_io = mc_io;
- return 0;
-
-error_cleanup_resource:
- fsl_mc_resource_free(resource);
- return error;
-}
-EXPORT_SYMBOL_GPL(fsl_mc_portal_allocate);
-
-/**
- * fsl_mc_portal_free - Returns an MC portal to the pool of free MC portals
- * of a given MC bus
- *
- * @mc_io: Pointer to the fsl_mc_io object that wraps the MC portal to free
- */
-void fsl_mc_portal_free(struct fsl_mc_io *mc_io)
-{
- struct fsl_mc_device *dpmcp_dev;
- struct fsl_mc_resource *resource;
-
- /*
- * Every mc_io obtained by calling fsl_mc_portal_allocate() is supposed
- * to have a DPMCP object associated with.
- */
- dpmcp_dev = mc_io->dpmcp_dev;
-
- resource = dpmcp_dev->resource;
- if (!resource || resource->type != FSL_MC_POOL_DPMCP)
- return;
-
- if (resource->data != dpmcp_dev)
- return;
-
- fsl_destroy_mc_io(mc_io);
- fsl_mc_resource_free(resource);
-}
-EXPORT_SYMBOL_GPL(fsl_mc_portal_free);
-
-/**
- * fsl_mc_portal_reset - Resets the dpmcp object for a given fsl_mc_io object
- *
- * @mc_io: Pointer to the fsl_mc_io object that wraps the MC portal to free
- */
-int fsl_mc_portal_reset(struct fsl_mc_io *mc_io)
-{
- int error;
- struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
-
- error = dpmcp_reset(mc_io, 0, dpmcp_dev->mc_handle);
- if (error < 0) {
- dev_err(&dpmcp_dev->dev, "dpmcp_reset() failed: %d\n", error);
- return error;
- }
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(fsl_mc_portal_reset);
diff --git a/drivers/staging/fsl-mc/bus/mc-sys.c b/drivers/staging/fsl-mc/bus/mc-sys.c
deleted file mode 100644
index f09d75d..0000000
--- a/drivers/staging/fsl-mc/bus/mc-sys.c
+++ /dev/null
@@ -1,296 +0,0 @@
-// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
-/*
- * Copyright 2013-2016 Freescale Semiconductor Inc.
- *
- * I/O services to send MC commands to the MC hardware
- *
- */
-
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <linux/device.h>
-#include <linux/io.h>
-#include <linux/io-64-nonatomic-hi-lo.h>
-#include "../include/mc.h"
-
-#include "fsl-mc-private.h"
-
-/**
- * Timeout in milliseconds to wait for the completion of an MC command
- */
-#define MC_CMD_COMPLETION_TIMEOUT_MS 500
-
-/*
- * usleep_range() min and max values used to throttle down polling
- * iterations while waiting for MC command completion
- */
-#define MC_CMD_COMPLETION_POLLING_MIN_SLEEP_USECS 10
-#define MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS 500
-
-static enum mc_cmd_status mc_cmd_hdr_read_status(struct mc_command *cmd)
-{
- struct mc_cmd_header *hdr = (struct mc_cmd_header *)&cmd->header;
-
- return (enum mc_cmd_status)hdr->status;
-}
-
-static u16 mc_cmd_hdr_read_cmdid(struct mc_command *cmd)
-{
- struct mc_cmd_header *hdr = (struct mc_cmd_header *)&cmd->header;
- u16 cmd_id = le16_to_cpu(hdr->cmd_id);
-
- return cmd_id;
-}
-
-static int mc_status_to_error(enum mc_cmd_status status)
-{
- static const int mc_status_to_error_map[] = {
- [MC_CMD_STATUS_OK] = 0,
- [MC_CMD_STATUS_AUTH_ERR] = -EACCES,
- [MC_CMD_STATUS_NO_PRIVILEGE] = -EPERM,
- [MC_CMD_STATUS_DMA_ERR] = -EIO,
- [MC_CMD_STATUS_CONFIG_ERR] = -ENXIO,
- [MC_CMD_STATUS_TIMEOUT] = -ETIMEDOUT,
- [MC_CMD_STATUS_NO_RESOURCE] = -ENAVAIL,
- [MC_CMD_STATUS_NO_MEMORY] = -ENOMEM,
- [MC_CMD_STATUS_BUSY] = -EBUSY,
- [MC_CMD_STATUS_UNSUPPORTED_OP] = -ENOTSUPP,
- [MC_CMD_STATUS_INVALID_STATE] = -ENODEV,
- };
-
- if ((u32)status >= ARRAY_SIZE(mc_status_to_error_map))
- return -EINVAL;
-
- return mc_status_to_error_map[status];
-}
-
-static const char *mc_status_to_string(enum mc_cmd_status status)
-{
- static const char *const status_strings[] = {
- [MC_CMD_STATUS_OK] = "Command completed successfully",
- [MC_CMD_STATUS_READY] = "Command ready to be processed",
- [MC_CMD_STATUS_AUTH_ERR] = "Authentication error",
- [MC_CMD_STATUS_NO_PRIVILEGE] = "No privilege",
- [MC_CMD_STATUS_DMA_ERR] = "DMA or I/O error",
- [MC_CMD_STATUS_CONFIG_ERR] = "Configuration error",
- [MC_CMD_STATUS_TIMEOUT] = "Operation timed out",
- [MC_CMD_STATUS_NO_RESOURCE] = "No resources",
- [MC_CMD_STATUS_NO_MEMORY] = "No memory available",
- [MC_CMD_STATUS_BUSY] = "Device is busy",
- [MC_CMD_STATUS_UNSUPPORTED_OP] = "Unsupported operation",
- [MC_CMD_STATUS_INVALID_STATE] = "Invalid state"
- };
-
- if ((unsigned int)status >= ARRAY_SIZE(status_strings))
- return "Unknown MC error";
-
- return status_strings[status];
-}
-
-/**
- * mc_write_command - writes a command to a Management Complex (MC) portal
- *
- * @portal: pointer to an MC portal
- * @cmd: pointer to a filled command
- */
-static inline void mc_write_command(struct mc_command __iomem *portal,
- struct mc_command *cmd)
-{
- int i;
-
- /* copy command parameters into the portal */
- for (i = 0; i < MC_CMD_NUM_OF_PARAMS; i++)
- /*
- * Data is already in the expected LE byte-order. Do an
- * extra LE -> CPU conversion so that the CPU -> LE done in
- * the device io write api puts it back in the right order.
- */
- writeq_relaxed(le64_to_cpu(cmd->params[i]), &portal->params[i]);
-
- /* submit the command by writing the header */
- writeq(le64_to_cpu(cmd->header), &portal->header);
-}
-
-/**
- * mc_read_response - reads the response for the last MC command from a
- * Management Complex (MC) portal
- *
- * @portal: pointer to an MC portal
- * @resp: pointer to command response buffer
- *
- * Returns MC_CMD_STATUS_OK on Success; Error code otherwise.
- */
-static inline enum mc_cmd_status mc_read_response(struct mc_command __iomem *
- portal,
- struct mc_command *resp)
-{
- int i;
- enum mc_cmd_status status;
-
- /* Copy command response header from MC portal: */
- resp->header = cpu_to_le64(readq_relaxed(&portal->header));
- status = mc_cmd_hdr_read_status(resp);
- if (status != MC_CMD_STATUS_OK)
- return status;
-
- /* Copy command response data from MC portal: */
- for (i = 0; i < MC_CMD_NUM_OF_PARAMS; i++)
- /*
- * Data is expected to be in LE byte-order. Do an
- * extra CPU -> LE to revert the LE -> CPU done in
- * the device io read api.
- */
- resp->params[i] =
- cpu_to_le64(readq_relaxed(&portal->params[i]));
-
- return status;
-}
-
-/**
- * Waits for the completion of an MC command doing preemptible polling.
- * uslepp_range() is called between polling iterations.
- *
- * @mc_io: MC I/O object to be used
- * @cmd: command buffer to receive MC response
- * @mc_status: MC command completion status
- */
-static int mc_polling_wait_preemptible(struct fsl_mc_io *mc_io,
- struct mc_command *cmd,
- enum mc_cmd_status *mc_status)
-{
- enum mc_cmd_status status;
- unsigned long jiffies_until_timeout =
- jiffies + msecs_to_jiffies(MC_CMD_COMPLETION_TIMEOUT_MS);
-
- /*
- * Wait for response from the MC hardware:
- */
- for (;;) {
- status = mc_read_response(mc_io->portal_virt_addr, cmd);
- if (status != MC_CMD_STATUS_READY)
- break;
-
- /*
- * TODO: When MC command completion interrupts are supported
- * call wait function here instead of usleep_range()
- */
- usleep_range(MC_CMD_COMPLETION_POLLING_MIN_SLEEP_USECS,
- MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS);
-
- if (time_after_eq(jiffies, jiffies_until_timeout)) {
- dev_dbg(mc_io->dev,
- "MC command timed out (portal: %pa, dprc handle: %#x, command: %#x)\n",
- &mc_io->portal_phys_addr,
- (unsigned int)mc_cmd_hdr_read_token(cmd),
- (unsigned int)mc_cmd_hdr_read_cmdid(cmd));
-
- return -ETIMEDOUT;
- }
- }
-
- *mc_status = status;
- return 0;
-}
-
-/**
- * Waits for the completion of an MC command doing atomic polling.
- * udelay() is called between polling iterations.
- *
- * @mc_io: MC I/O object to be used
- * @cmd: command buffer to receive MC response
- * @mc_status: MC command completion status
- */
-static int mc_polling_wait_atomic(struct fsl_mc_io *mc_io,
- struct mc_command *cmd,
- enum mc_cmd_status *mc_status)
-{
- enum mc_cmd_status status;
- unsigned long timeout_usecs = MC_CMD_COMPLETION_TIMEOUT_MS * 1000;
-
- BUILD_BUG_ON((MC_CMD_COMPLETION_TIMEOUT_MS * 1000) %
- MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS != 0);
-
- for (;;) {
- status = mc_read_response(mc_io->portal_virt_addr, cmd);
- if (status != MC_CMD_STATUS_READY)
- break;
-
- udelay(MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS);
- timeout_usecs -= MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS;
- if (timeout_usecs == 0) {
- dev_dbg(mc_io->dev,
- "MC command timed out (portal: %pa, dprc handle: %#x, command: %#x)\n",
- &mc_io->portal_phys_addr,
- (unsigned int)mc_cmd_hdr_read_token(cmd),
- (unsigned int)mc_cmd_hdr_read_cmdid(cmd));
-
- return -ETIMEDOUT;
- }
- }
-
- *mc_status = status;
- return 0;
-}
-
-/**
- * Sends a command to the MC device using the given MC I/O object
- *
- * @mc_io: MC I/O object to be used
- * @cmd: command to be sent
- *
- * Returns '0' on Success; Error code otherwise.
- */
-int mc_send_command(struct fsl_mc_io *mc_io, struct mc_command *cmd)
-{
- int error;
- enum mc_cmd_status status;
- unsigned long irq_flags = 0;
-
- if (in_irq() && !(mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL))
- return -EINVAL;
-
- if (mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
- spin_lock_irqsave(&mc_io->spinlock, irq_flags);
- else
- mutex_lock(&mc_io->mutex);
-
- /*
- * Send command to the MC hardware:
- */
- mc_write_command(mc_io->portal_virt_addr, cmd);
-
- /*
- * Wait for response from the MC hardware:
- */
- if (!(mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL))
- error = mc_polling_wait_preemptible(mc_io, cmd, &status);
- else
- error = mc_polling_wait_atomic(mc_io, cmd, &status);
-
- if (error < 0)
- goto common_exit;
-
- if (status != MC_CMD_STATUS_OK) {
- dev_dbg(mc_io->dev,
- "MC command failed: portal: %pa, dprc handle: %#x, command: %#x, status: %s (%#x)\n",
- &mc_io->portal_phys_addr,
- (unsigned int)mc_cmd_hdr_read_token(cmd),
- (unsigned int)mc_cmd_hdr_read_cmdid(cmd),
- mc_status_to_string(status),
- (unsigned int)status);
-
- error = mc_status_to_error(status);
- goto common_exit;
- }
-
- error = 0;
-common_exit:
- if (mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
- spin_unlock_irqrestore(&mc_io->spinlock, irq_flags);
- else
- mutex_unlock(&mc_io->mutex);
-
- return error;
-}
-EXPORT_SYMBOL_GPL(mc_send_command);
diff --git a/drivers/staging/fsl-mc/include/mc.h b/drivers/staging/fsl-mc/include/mc.h
deleted file mode 100644
index 765ba41..0000000
--- a/drivers/staging/fsl-mc/include/mc.h
+++ /dev/null
@@ -1,454 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Freescale Management Complex (MC) bus public interface
- *
- * Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
- * Author: German Rivera <[email protected]>
- *
- */
-#ifndef _FSL_MC_H_
-#define _FSL_MC_H_
-
-#include <linux/device.h>
-#include <linux/mod_devicetable.h>
-#include <linux/interrupt.h>
-
-#define FSL_MC_VENDOR_FREESCALE 0x1957
-
-struct irq_domain;
-struct msi_domain_info;
-
-struct fsl_mc_device;
-struct fsl_mc_io;
-
-/**
- * struct fsl_mc_driver - MC object device driver object
- * @driver: Generic device driver
- * @match_id_table: table of supported device matching Ids
- * @probe: Function called when a device is added
- * @remove: Function called when a device is removed
- * @shutdown: Function called at shutdown time to quiesce the device
- * @suspend: Function called when a device is stopped
- * @resume: Function called when a device is resumed
- *
- * Generic DPAA device driver object for device drivers that are registered
- * with a DPRC bus. This structure is to be embedded in each device-specific
- * driver structure.
- */
-struct fsl_mc_driver {
- struct device_driver driver;
- const struct fsl_mc_device_id *match_id_table;
- int (*probe)(struct fsl_mc_device *dev);
- int (*remove)(struct fsl_mc_device *dev);
- void (*shutdown)(struct fsl_mc_device *dev);
- int (*suspend)(struct fsl_mc_device *dev, pm_message_t state);
- int (*resume)(struct fsl_mc_device *dev);
-};
-
-#define to_fsl_mc_driver(_drv) \
- container_of(_drv, struct fsl_mc_driver, driver)
-
-/**
- * enum fsl_mc_pool_type - Types of allocatable MC bus resources
- *
- * Entries in these enum are used as indices in the array of resource
- * pools of an fsl_mc_bus object.
- */
-enum fsl_mc_pool_type {
- FSL_MC_POOL_DPMCP = 0x0, /* corresponds to "dpmcp" in the MC */
- FSL_MC_POOL_DPBP, /* corresponds to "dpbp" in the MC */
- FSL_MC_POOL_DPCON, /* corresponds to "dpcon" in the MC */
- FSL_MC_POOL_IRQ,
-
- /*
- * NOTE: New resource pool types must be added before this entry
- */
- FSL_MC_NUM_POOL_TYPES
-};
-
-/**
- * struct fsl_mc_resource - MC generic resource
- * @type: type of resource
- * @id: unique MC resource Id within the resources of the same type
- * @data: pointer to resource-specific data if the resource is currently
- * allocated, or NULL if the resource is not currently allocated.
- * @parent_pool: pointer to the parent resource pool from which this
- * resource is allocated from.
- * @node: Node in the free list of the corresponding resource pool
- *
- * NOTE: This structure is to be embedded as a field of specific
- * MC resource structures.
- */
-struct fsl_mc_resource {
- enum fsl_mc_pool_type type;
- s32 id;
- void *data;
- struct fsl_mc_resource_pool *parent_pool;
- struct list_head node;
-};
-
-/**
- * struct fsl_mc_device_irq - MC object device message-based interrupt
- * @msi_desc: pointer to MSI descriptor allocated by fsl_mc_msi_alloc_descs()
- * @mc_dev: MC object device that owns this interrupt
- * @dev_irq_index: device-relative IRQ index
- * @resource: MC generic resource associated with the interrupt
- */
-struct fsl_mc_device_irq {
- struct msi_desc *msi_desc;
- struct fsl_mc_device *mc_dev;
- u8 dev_irq_index;
- struct fsl_mc_resource resource;
-};
-
-#define to_fsl_mc_irq(_mc_resource) \
- container_of(_mc_resource, struct fsl_mc_device_irq, resource)
-
-/* Opened state - Indicates that an object is open by at least one owner */
-#define FSL_MC_OBJ_STATE_OPEN 0x00000001
-/* Plugged state - Indicates that the object is plugged */
-#define FSL_MC_OBJ_STATE_PLUGGED 0x00000002
-
-/**
- * Shareability flag - Object flag indicating no memory shareability.
- * the object generates memory accesses that are non coherent with other
- * masters;
- * user is responsible for proper memory handling through IOMMU configuration.
- */
-#define FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY 0x0001
-
-/**
- * struct fsl_mc_obj_desc - Object descriptor
- * @type: Type of object: NULL terminated string
- * @id: ID of logical object resource
- * @vendor: Object vendor identifier
- * @ver_major: Major version number
- * @ver_minor: Minor version number
- * @irq_count: Number of interrupts supported by the object
- * @region_count: Number of mappable regions supported by the object
- * @state: Object state: combination of FSL_MC_OBJ_STATE_ states
- * @label: Object label: NULL terminated string
- * @flags: Object's flags
- */
-struct fsl_mc_obj_desc {
- char type[16];
- int id;
- u16 vendor;
- u16 ver_major;
- u16 ver_minor;
- u8 irq_count;
- u8 region_count;
- u32 state;
- char label[16];
- u16 flags;
-};
-
-/**
- * Bit masks for a MC object device (struct fsl_mc_device) flags
- */
-#define FSL_MC_IS_DPRC 0x0001
-
-/**
- * struct fsl_mc_device - MC object device object
- * @dev: Linux driver model device object
- * @dma_mask: Default DMA mask
- * @flags: MC object device flags
- * @icid: Isolation context ID for the device
- * @mc_handle: MC handle for the corresponding MC object opened
- * @mc_io: Pointer to MC IO object assigned to this device or
- * NULL if none.
- * @obj_desc: MC description of the DPAA device
- * @regions: pointer to array of MMIO region entries
- * @irqs: pointer to array of pointers to interrupts allocated to this device
- * @resource: generic resource associated with this MC object device, if any.
- *
- * Generic device object for MC object devices that are "attached" to a
- * MC bus.
- *
- * NOTES:
- * - For a non-DPRC object its icid is the same as its parent DPRC's icid.
- * - The SMMU notifier callback gets invoked after device_add() has been
- * called for an MC object device, but before the device-specific probe
- * callback gets called.
- * - DP_OBJ_DPRC objects are the only MC objects that have built-in MC
- * portals. For all other MC objects, their device drivers are responsible for
- * allocating MC portals for them by calling fsl_mc_portal_allocate().
- * - Some types of MC objects (e.g., DP_OBJ_DPBP, DP_OBJ_DPCON) are
- * treated as resources that can be allocated/deallocated from the
- * corresponding resource pool in the object's parent DPRC, using the
- * fsl_mc_object_allocate()/fsl_mc_object_free() functions. These MC objects
- * are known as "allocatable" objects. For them, the corresponding
- * fsl_mc_device's 'resource' points to the associated resource object.
- * For MC objects that are not allocatable (e.g., DP_OBJ_DPRC, DP_OBJ_DPNI),
- * 'resource' is NULL.
- */
-struct fsl_mc_device {
- struct device dev;
- u64 dma_mask;
- u16 flags;
- u16 icid;
- u16 mc_handle;
- struct fsl_mc_io *mc_io;
- struct fsl_mc_obj_desc obj_desc;
- struct resource *regions;
- struct fsl_mc_device_irq **irqs;
- struct fsl_mc_resource *resource;
-};
-
-#define to_fsl_mc_device(_dev) \
- container_of(_dev, struct fsl_mc_device, dev)
-
-#define MC_CMD_NUM_OF_PARAMS 7
-
-struct mc_cmd_header {
- u8 src_id;
- u8 flags_hw;
- u8 status;
- u8 flags_sw;
- __le16 token;
- __le16 cmd_id;
-};
-
-struct mc_command {
- u64 header;
- u64 params[MC_CMD_NUM_OF_PARAMS];
-};
-
-enum mc_cmd_status {
- MC_CMD_STATUS_OK = 0x0, /* Completed successfully */
- MC_CMD_STATUS_READY = 0x1, /* Ready to be processed */
- MC_CMD_STATUS_AUTH_ERR = 0x3, /* Authentication error */
- MC_CMD_STATUS_NO_PRIVILEGE = 0x4, /* No privilege */
- MC_CMD_STATUS_DMA_ERR = 0x5, /* DMA or I/O error */
- MC_CMD_STATUS_CONFIG_ERR = 0x6, /* Configuration error */
- MC_CMD_STATUS_TIMEOUT = 0x7, /* Operation timed out */
- MC_CMD_STATUS_NO_RESOURCE = 0x8, /* No resources */
- MC_CMD_STATUS_NO_MEMORY = 0x9, /* No memory available */
- MC_CMD_STATUS_BUSY = 0xA, /* Device is busy */
- MC_CMD_STATUS_UNSUPPORTED_OP = 0xB, /* Unsupported operation */
- MC_CMD_STATUS_INVALID_STATE = 0xC /* Invalid state */
-};
-
-/*
- * MC command flags
- */
-
-/* High priority flag */
-#define MC_CMD_FLAG_PRI 0x80
-/* Command completion flag */
-#define MC_CMD_FLAG_INTR_DIS 0x01
-
-static inline u64 mc_encode_cmd_header(u16 cmd_id,
- u32 cmd_flags,
- u16 token)
-{
- u64 header = 0;
- struct mc_cmd_header *hdr = (struct mc_cmd_header *)&header;
-
- hdr->cmd_id = cpu_to_le16(cmd_id);
- hdr->token = cpu_to_le16(token);
- hdr->status = MC_CMD_STATUS_READY;
- if (cmd_flags & MC_CMD_FLAG_PRI)
- hdr->flags_hw = MC_CMD_FLAG_PRI;
- if (cmd_flags & MC_CMD_FLAG_INTR_DIS)
- hdr->flags_sw = MC_CMD_FLAG_INTR_DIS;
-
- return header;
-}
-
-static inline u16 mc_cmd_hdr_read_token(struct mc_command *cmd)
-{
- struct mc_cmd_header *hdr = (struct mc_cmd_header *)&cmd->header;
- u16 token = le16_to_cpu(hdr->token);
-
- return token;
-}
-
-struct mc_rsp_create {
- __le32 object_id;
-};
-
-struct mc_rsp_api_ver {
- __le16 major_ver;
- __le16 minor_ver;
-};
-
-static inline u32 mc_cmd_read_object_id(struct mc_command *cmd)
-{
- struct mc_rsp_create *rsp_params;
-
- rsp_params = (struct mc_rsp_create *)cmd->params;
- return le32_to_cpu(rsp_params->object_id);
-}
-
-static inline void mc_cmd_read_api_version(struct mc_command *cmd,
- u16 *major_ver,
- u16 *minor_ver)
-{
- struct mc_rsp_api_ver *rsp_params;
-
- rsp_params = (struct mc_rsp_api_ver *)cmd->params;
- *major_ver = le16_to_cpu(rsp_params->major_ver);
- *minor_ver = le16_to_cpu(rsp_params->minor_ver);
-}
-
-/**
- * Bit masks for a MC I/O object (struct fsl_mc_io) flags
- */
-#define FSL_MC_IO_ATOMIC_CONTEXT_PORTAL 0x0001
-
-/**
- * struct fsl_mc_io - MC I/O object to be passed-in to mc_send_command()
- * @dev: device associated with this Mc I/O object
- * @flags: flags for mc_send_command()
- * @portal_size: MC command portal size in bytes
- * @portal_phys_addr: MC command portal physical address
- * @portal_virt_addr: MC command portal virtual address
- * @dpmcp_dev: pointer to the DPMCP device associated with the MC portal.
- *
- * Fields are only meaningful if the FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is not
- * set:
- * @mutex: Mutex to serialize mc_send_command() calls that use the same MC
- * portal, if the fsl_mc_io object was created with the
- * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag off. mc_send_command() calls for this
- * fsl_mc_io object must be made only from non-atomic context.
- *
- * Fields are only meaningful if the FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is
- * set:
- * @spinlock: Spinlock to serialize mc_send_command() calls that use the same MC
- * portal, if the fsl_mc_io object was created with the
- * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag on. mc_send_command() calls for this
- * fsl_mc_io object can be made from atomic or non-atomic context.
- */
-struct fsl_mc_io {
- struct device *dev;
- u16 flags;
- u32 portal_size;
- phys_addr_t portal_phys_addr;
- void __iomem *portal_virt_addr;
- struct fsl_mc_device *dpmcp_dev;
- union {
- /*
- * This field is only meaningful if the
- * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is not set
- */
- struct mutex mutex; /* serializes mc_send_command() */
-
- /*
- * This field is only meaningful if the
- * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is set
- */
- spinlock_t spinlock; /* serializes mc_send_command() */
- };
-};
-
-int mc_send_command(struct fsl_mc_io *mc_io, struct mc_command *cmd);
-
-#ifdef CONFIG_FSL_MC_BUS
-#define dev_is_fsl_mc(_dev) ((_dev)->bus == &fsl_mc_bus_type)
-#else
-/* If fsl-mc bus is not present device cannot belong to fsl-mc bus */
-#define dev_is_fsl_mc(_dev) (0)
-#endif
-
-/*
- * module_fsl_mc_driver() - Helper macro for drivers that don't do
- * anything special in module init/exit. This eliminates a lot of
- * boilerplate. Each module may only use this macro once, and
- * calling it replaces module_init() and module_exit()
- */
-#define module_fsl_mc_driver(__fsl_mc_driver) \
- module_driver(__fsl_mc_driver, fsl_mc_driver_register, \
- fsl_mc_driver_unregister)
-
-/*
- * Macro to avoid include chaining to get THIS_MODULE
- */
-#define fsl_mc_driver_register(drv) \
- __fsl_mc_driver_register(drv, THIS_MODULE)
-
-int __must_check __fsl_mc_driver_register(struct fsl_mc_driver *fsl_mc_driver,
- struct module *owner);
-
-void fsl_mc_driver_unregister(struct fsl_mc_driver *driver);
-
-int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
- u16 mc_io_flags,
- struct fsl_mc_io **new_mc_io);
-
-void fsl_mc_portal_free(struct fsl_mc_io *mc_io);
-
-int fsl_mc_portal_reset(struct fsl_mc_io *mc_io);
-
-int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev,
- enum fsl_mc_pool_type pool_type,
- struct fsl_mc_device **new_mc_adev);
-
-void fsl_mc_object_free(struct fsl_mc_device *mc_adev);
-
-struct irq_domain *fsl_mc_msi_create_irq_domain(struct fwnode_handle *fwnode,
- struct msi_domain_info *info,
- struct irq_domain *parent);
-
-int __must_check fsl_mc_allocate_irqs(struct fsl_mc_device *mc_dev);
-
-void fsl_mc_free_irqs(struct fsl_mc_device *mc_dev);
-
-extern struct bus_type fsl_mc_bus_type;
-
-extern struct device_type fsl_mc_bus_dprc_type;
-extern struct device_type fsl_mc_bus_dpni_type;
-extern struct device_type fsl_mc_bus_dpio_type;
-extern struct device_type fsl_mc_bus_dpsw_type;
-extern struct device_type fsl_mc_bus_dpbp_type;
-extern struct device_type fsl_mc_bus_dpcon_type;
-extern struct device_type fsl_mc_bus_dpmcp_type;
-extern struct device_type fsl_mc_bus_dpmac_type;
-extern struct device_type fsl_mc_bus_dprtc_type;
-
-static inline bool is_fsl_mc_bus_dprc(const struct fsl_mc_device *mc_dev)
-{
- return mc_dev->dev.type == &fsl_mc_bus_dprc_type;
-}
-
-static inline bool is_fsl_mc_bus_dpni(const struct fsl_mc_device *mc_dev)
-{
- return mc_dev->dev.type == &fsl_mc_bus_dpni_type;
-}
-
-static inline bool is_fsl_mc_bus_dpio(const struct fsl_mc_device *mc_dev)
-{
- return mc_dev->dev.type == &fsl_mc_bus_dpio_type;
-}
-
-static inline bool is_fsl_mc_bus_dpsw(const struct fsl_mc_device *mc_dev)
-{
- return mc_dev->dev.type == &fsl_mc_bus_dpsw_type;
-}
-
-static inline bool is_fsl_mc_bus_dpbp(const struct fsl_mc_device *mc_dev)
-{
- return mc_dev->dev.type == &fsl_mc_bus_dpbp_type;
-}
-
-static inline bool is_fsl_mc_bus_dpcon(const struct fsl_mc_device *mc_dev)
-{
- return mc_dev->dev.type == &fsl_mc_bus_dpcon_type;
-}
-
-static inline bool is_fsl_mc_bus_dpmcp(const struct fsl_mc_device *mc_dev)
-{
- return mc_dev->dev.type == &fsl_mc_bus_dpmcp_type;
-}
-
-static inline bool is_fsl_mc_bus_dpmac(const struct fsl_mc_device *mc_dev)
-{
- return mc_dev->dev.type == &fsl_mc_bus_dpmac_type;
-}
-
-static inline bool is_fsl_mc_bus_dprtc(const struct fsl_mc_device *mc_dev)
-{
- return mc_dev->dev.type == &fsl_mc_bus_dprtc_type;
-}
-
-#endif /* _FSL_MC_H_ */
diff --git a/drivers/staging/fsl-mc/overview.rst b/drivers/staging/fsl-mc/overview.rst
deleted file mode 100644
index 79fede4..0000000
--- a/drivers/staging/fsl-mc/overview.rst
+++ /dev/null
@@ -1,404 +0,0 @@
-.. include:: <isonum.txt>
-
-DPAA2 (Data Path Acceleration Architecture Gen2) Overview
-=========================================================
-
-:Copyright: |copy| 2015 Freescale Semiconductor Inc.
-:Copyright: |copy| 2018 NXP
-
-This document provides an overview of the Freescale DPAA2 architecture
-and how it is integrated into the Linux kernel.
-
-Introduction
-============
-
-DPAA2 is a hardware architecture designed for high-speeed network
-packet processing. DPAA2 consists of sophisticated mechanisms for
-processing Ethernet packets, queue management, buffer management,
-autonomous L2 switching, virtual Ethernet bridging, and accelerator
-(e.g. crypto) sharing.
-
-A DPAA2 hardware component called the Management Complex (or MC) manages the
-DPAA2 hardware resources. The MC provides an object-based abstraction for
-software drivers to use the DPAA2 hardware.
-The MC uses DPAA2 hardware resources such as queues, buffer pools, and
-network ports to create functional objects/devices such as network
-interfaces, an L2 switch, or accelerator instances.
-The MC provides memory-mapped I/O command interfaces (MC portals)
-which DPAA2 software drivers use to operate on DPAA2 objects.
-
-The diagram below shows an overview of the DPAA2 resource management
-architecture::
-
- +--------------------------------------+
- | OS |
- | DPAA2 drivers |
- | | |
- +-----------------------------|--------+
- |
- | (create,discover,connect
- | config,use,destroy)
- |
- DPAA2 |
- +------------------------| mc portal |-+
- | | |
- | +- - - - - - - - - - - - -V- - -+ |
- | | | |
- | | Management Complex (MC) | |
- | | | |
- | +- - - - - - - - - - - - - - - -+ |
- | |
- | Hardware Hardware |
- | Resources Objects |
- | --------- ------- |
- | -queues -DPRC |
- | -buffer pools -DPMCP |
- | -Eth MACs/ports -DPIO |
- | -network interface -DPNI |
- | profiles -DPMAC |
- | -queue portals -DPBP |
- | -MC portals ... |
- | ... |
- | |
- +--------------------------------------+
-
-
-The MC mediates operations such as create, discover,
-connect, configuration, and destroy. Fast-path operations
-on data, such as packet transmit/receive, are not mediated by
-the MC and are done directly using memory mapped regions in
-DPIO objects.
-
-Overview of DPAA2 Objects
-=========================
-
-The section provides a brief overview of some key DPAA2 objects.
-A simple scenario is described illustrating the objects involved
-in creating a network interfaces.
-
-DPRC (Datapath Resource Container)
-----------------------------------
-
-A DPRC is a container object that holds all the other
-types of DPAA2 objects. In the example diagram below there
-are 8 objects of 5 types (DPMCP, DPIO, DPBP, DPNI, and DPMAC)
-in the container.
-
-::
-
- +---------------------------------------------------------+
- | DPRC |
- | |
- | +-------+ +-------+ +-------+ +-------+ +-------+ |
- | | DPMCP | | DPIO | | DPBP | | DPNI | | DPMAC | |
- | +-------+ +-------+ +-------+ +---+---+ +---+---+ |
- | | DPMCP | | DPIO | |
- | +-------+ +-------+ |
- | | DPMCP | |
- | +-------+ |
- | |
- +---------------------------------------------------------+
-
-From the point of view of an OS, a DPRC behaves similar to a plug and
-play bus, like PCI. DPRC commands can be used to enumerate the contents
-of the DPRC, discover the hardware objects present (including mappable
-regions and interrupts).
-
-::
-
- DPRC.1 (bus)
- |
- +--+--------+-------+-------+-------+
- | | | | |
- DPMCP.1 DPIO.1 DPBP.1 DPNI.1 DPMAC.1
- DPMCP.2 DPIO.2
- DPMCP.3
-
-Hardware objects can be created and destroyed dynamically, providing
-the ability to hot plug/unplug objects in and out of the DPRC.
-
-A DPRC has a mappable MMIO region (an MC portal) that can be used
-to send MC commands. It has an interrupt for status events (like
-hotplug).
-All objects in a container share the same hardware "isolation context".
-This means that with respect to an IOMMU the isolation granularity
-is at the DPRC (container) level, not at the individual object
-level.
-
-DPRCs can be defined statically and populated with objects
-via a config file passed to the MC when firmware starts it.
-
-DPAA2 Objects for an Ethernet Network Interface
------------------------------------------------
-
-A typical Ethernet NIC is monolithic-- the NIC device contains TX/RX
-queuing mechanisms, configuration mechanisms, buffer management,
-physical ports, and interrupts. DPAA2 uses a more granular approach
-utilizing multiple hardware objects. Each object provides specialized
-functions. Groups of these objects are used by software to provide
-Ethernet network interface functionality. This approach provides
-efficient use of finite hardware resources, flexibility, and
-performance advantages.
-
-The diagram below shows the objects needed for a simple
-network interface configuration on a system with 2 CPUs.
-
-::
-
- +---+---+ +---+---+
- CPU0 CPU1
- +---+---+ +---+---+
- | |
- +---+---+ +---+---+
- DPIO DPIO
- +---+---+ +---+---+
- \ /
- \ /
- \ /
- +---+---+
- DPNI --- DPBP,DPMCP
- +---+---+
- |
- |
- +---+---+
- DPMAC
- +---+---+
- |
- port/PHY
-
-Below the objects are described. For each object a brief description
-is provided along with a summary of the kinds of operations the object
-supports and a summary of key resources of the object (MMIO regions
-and IRQs).
-
-DPMAC (Datapath Ethernet MAC)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-Represents an Ethernet MAC, a hardware device that connects to an Ethernet
-PHY and allows physical transmission and reception of Ethernet frames.
-
-- MMIO regions: none
-- IRQs: DPNI link change
-- commands: set link up/down, link config, get stats,
- IRQ config, enable, reset
-
-DPNI (Datapath Network Interface)
-Contains TX/RX queues, network interface configuration, and RX buffer pool
-configuration mechanisms. The TX/RX queues are in memory and are identified
-by queue number.
-
-- MMIO regions: none
-- IRQs: link state
-- commands: port config, offload config, queue config,
- parse/classify config, IRQ config, enable, reset
-
-DPIO (Datapath I/O)
-~~~~~~~~~~~~~~~~~~~
-Provides interfaces to enqueue and dequeue
-packets and do hardware buffer pool management operations. The DPAA2
-architecture separates the mechanism to access queues (the DPIO object)
-from the queues themselves. The DPIO provides an MMIO interface to
-enqueue/dequeue packets. To enqueue something a descriptor is written
-to the DPIO MMIO region, which includes the target queue number.
-There will typically be one DPIO assigned to each CPU. This allows all
-CPUs to simultaneously perform enqueue/dequeued operations. DPIOs are
-expected to be shared by different DPAA2 drivers.
-
-- MMIO regions: queue operations, buffer management
-- IRQs: data availability, congestion notification, buffer
- pool depletion
-- commands: IRQ config, enable, reset
-
-DPBP (Datapath Buffer Pool)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~
-Represents a hardware buffer pool.
-
-- MMIO regions: none
-- IRQs: none
-- commands: enable, reset
-
-DPMCP (Datapath MC Portal)
-~~~~~~~~~~~~~~~~~~~~~~~~~~
-Provides an MC command portal.
-Used by drivers to send commands to the MC to manage
-objects.
-
-- MMIO regions: MC command portal
-- IRQs: command completion
-- commands: IRQ config, enable, reset
-
-Object Connections
-==================
-Some objects have explicit relationships that must
-be configured:
-
-- DPNI <--> DPMAC
-- DPNI <--> DPNI
-- DPNI <--> L2-switch-port
-
- A DPNI must be connected to something such as a DPMAC,
- another DPNI, or L2 switch port. The DPNI connection
- is made via a DPRC command.
-
-::
-
- +-------+ +-------+
- | DPNI | | DPMAC |
- +---+---+ +---+---+
- | |
- +==========+
-
-- DPNI <--> DPBP
-
- A network interface requires a 'buffer pool' (DPBP
- object) which provides a list of pointers to memory
- where received Ethernet data is to be copied. The
- Ethernet driver configures the DPBPs associated with
- the network interface.
-
-Interrupts
-==========
-All interrupts generated by DPAA2 objects are message
-interrupts. At the hardware level message interrupts
-generated by devices will normally have 3 components--
-1) a non-spoofable 'device-id' expressed on the hardware
-bus, 2) an address, 3) a data value.
-
-In the case of DPAA2 devices/objects, all objects in the
-same container/DPRC share the same 'device-id'.
-For ARM-based SoC this is the same as the stream ID.
-
-
-DPAA2 Linux Drivers Overview
-============================
-
-This section provides an overview of the Linux kernel drivers for
-DPAA2-- 1) the bus driver and associated "DPAA2 infrastructure"
-drivers and 2) functional object drivers (such as Ethernet).
-
-As described previously, a DPRC is a container that holds the other
-types of DPAA2 objects. It is functionally similar to a plug-and-play
-bus controller.
-Each object in the DPRC is a Linux "device" and is bound to a driver.
-The diagram below shows the Linux drivers involved in a networking
-scenario and the objects bound to each driver. A brief description
-of each driver follows.
-
-::
-
- +------------+
- | OS Network |
- | Stack |
- +------------+ +------------+
- | Allocator |. . . . . . . | Ethernet |
- |(DPMCP,DPBP)| | (DPNI) |
- +-.----------+ +---+---+----+
- . . ^ |
- . . <data avail, | | <enqueue,
- . . tx confirm> | | dequeue>
- +-------------+ . | |
- | DPRC driver | . +---+---V----+ +---------+
- | (DPRC) | . . . . . .| DPIO driver| | MAC |
- +----------+--+ | (DPIO) | | (DPMAC) |
- | +------+-----+ +-----+---+
- |<dev add/remove> | |
- | | |
- +--------+----------+ | +--+---+
- | MC-bus driver | | | PHY |
- | | | |driver|
- | /bus/fsl-mc | | +--+---+
- +-------------------+ | |
- | |
- ========================= HARDWARE =========|=================|======
- DPIO |
- | |
- DPNI---DPBP |
- | |
- DPMAC |
- | |
- PHY ---------------+
- ============================================|========================
-
-A brief description of each driver is provided below.
-
-MC-bus driver
--------------
-The MC-bus driver is a platform driver and is probed from a
-node in the device tree (compatible "fsl,qoriq-mc") passed in by boot
-firmware. It is responsible for bootstrapping the DPAA2 kernel
-infrastructure.
-Key functions include:
-
-- registering a new bus type named "fsl-mc" with the kernel,
- and implementing bus call-backs (e.g. match/uevent/dev_groups)
-- implementing APIs for DPAA2 driver registration and for device
- add/remove
-- creates an MSI IRQ domain
-- doing a 'device add' to expose the 'root' DPRC, in turn triggering
- a bind of the root DPRC to the DPRC driver
-
-The binding for the MC-bus device-tree node can be consulted at
-*Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt*.
-The sysfs bind/unbind interfaces for the MC-bus can be consulted at
-*Documentation/ABI/testing/sysfs-bus-fsl-mc*.
-
-DPRC driver
------------
-The DPRC driver is bound to DPRC objects and does runtime management
-of a bus instance. It performs the initial bus scan of the DPRC
-and handles interrupts for container events such as hot plug by
-re-scanning the DPRC.
-
-Allocator
----------
-Certain objects such as DPMCP and DPBP are generic and fungible,
-and are intended to be used by other drivers. For example,
-the DPAA2 Ethernet driver needs:
-
-- DPMCPs to send MC commands, to configure network interfaces
-- DPBPs for network buffer pools
-
-The allocator driver registers for these allocatable object types
-and those objects are bound to the allocator when the bus is probed.
-The allocator maintains a pool of objects that are available for
-allocation by other DPAA2 drivers.
-
-DPIO driver
------------
-The DPIO driver is bound to DPIO objects and provides services that allow
-other drivers such as the Ethernet driver to enqueue and dequeue data for
-their respective objects.
-Key services include:
-
-- data availability notifications
-- hardware queuing operations (enqueue and dequeue of data)
-- hardware buffer pool management
-
-To transmit a packet the Ethernet driver puts data on a queue and
-invokes a DPIO API. For receive, the Ethernet driver registers
-a data availability notification callback. To dequeue a packet
-a DPIO API is used.
-There is typically one DPIO object per physical CPU for optimum
-performance, allowing different CPUs to simultaneously enqueue
-and dequeue data.
-
-The DPIO driver operates on behalf of all DPAA2 drivers
-active in the kernel-- Ethernet, crypto, compression,
-etc.
-
-Ethernet driver
----------------
-The Ethernet driver is bound to a DPNI and implements the kernel
-interfaces needed to connect the DPAA2 network interface to
-the network stack.
-Each DPNI corresponds to a Linux network interface.
-
-MAC driver
-----------
-An Ethernet PHY is an off-chip, board specific component and is managed
-by the appropriate PHY driver via an mdio bus. The MAC driver
-plays a role of being a proxy between the PHY driver and the
-MC. It does this proxy via the MC commands to a DPMAC object.
-If the PHY driver signals a link change, the MAC driver notifies
-the MC via a DPMAC command. If a network interface is brought
-up or down, the MC notifies the DPMAC driver via an interrupt and
-the driver can take appropriate action.
diff --git a/include/linux/fsl/mc.h b/include/linux/fsl/mc.h
new file mode 100644
index 0000000..765ba41
--- /dev/null
+++ b/include/linux/fsl/mc.h
@@ -0,0 +1,454 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Freescale Management Complex (MC) bus public interface
+ *
+ * Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
+ * Author: German Rivera <[email protected]>
+ *
+ */
+#ifndef _FSL_MC_H_
+#define _FSL_MC_H_
+
+#include <linux/device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/interrupt.h>
+
+#define FSL_MC_VENDOR_FREESCALE 0x1957
+
+struct irq_domain;
+struct msi_domain_info;
+
+struct fsl_mc_device;
+struct fsl_mc_io;
+
+/**
+ * struct fsl_mc_driver - MC object device driver object
+ * @driver: Generic device driver
+ * @match_id_table: table of supported device matching Ids
+ * @probe: Function called when a device is added
+ * @remove: Function called when a device is removed
+ * @shutdown: Function called at shutdown time to quiesce the device
+ * @suspend: Function called when a device is stopped
+ * @resume: Function called when a device is resumed
+ *
+ * Generic DPAA device driver object for device drivers that are registered
+ * with a DPRC bus. This structure is to be embedded in each device-specific
+ * driver structure.
+ */
+struct fsl_mc_driver {
+ struct device_driver driver;
+ const struct fsl_mc_device_id *match_id_table;
+ int (*probe)(struct fsl_mc_device *dev);
+ int (*remove)(struct fsl_mc_device *dev);
+ void (*shutdown)(struct fsl_mc_device *dev);
+ int (*suspend)(struct fsl_mc_device *dev, pm_message_t state);
+ int (*resume)(struct fsl_mc_device *dev);
+};
+
+#define to_fsl_mc_driver(_drv) \
+ container_of(_drv, struct fsl_mc_driver, driver)
+
+/**
+ * enum fsl_mc_pool_type - Types of allocatable MC bus resources
+ *
+ * Entries in these enum are used as indices in the array of resource
+ * pools of an fsl_mc_bus object.
+ */
+enum fsl_mc_pool_type {
+ FSL_MC_POOL_DPMCP = 0x0, /* corresponds to "dpmcp" in the MC */
+ FSL_MC_POOL_DPBP, /* corresponds to "dpbp" in the MC */
+ FSL_MC_POOL_DPCON, /* corresponds to "dpcon" in the MC */
+ FSL_MC_POOL_IRQ,
+
+ /*
+ * NOTE: New resource pool types must be added before this entry
+ */
+ FSL_MC_NUM_POOL_TYPES
+};
+
+/**
+ * struct fsl_mc_resource - MC generic resource
+ * @type: type of resource
+ * @id: unique MC resource Id within the resources of the same type
+ * @data: pointer to resource-specific data if the resource is currently
+ * allocated, or NULL if the resource is not currently allocated.
+ * @parent_pool: pointer to the parent resource pool from which this
+ * resource is allocated from.
+ * @node: Node in the free list of the corresponding resource pool
+ *
+ * NOTE: This structure is to be embedded as a field of specific
+ * MC resource structures.
+ */
+struct fsl_mc_resource {
+ enum fsl_mc_pool_type type;
+ s32 id;
+ void *data;
+ struct fsl_mc_resource_pool *parent_pool;
+ struct list_head node;
+};
+
+/**
+ * struct fsl_mc_device_irq - MC object device message-based interrupt
+ * @msi_desc: pointer to MSI descriptor allocated by fsl_mc_msi_alloc_descs()
+ * @mc_dev: MC object device that owns this interrupt
+ * @dev_irq_index: device-relative IRQ index
+ * @resource: MC generic resource associated with the interrupt
+ */
+struct fsl_mc_device_irq {
+ struct msi_desc *msi_desc;
+ struct fsl_mc_device *mc_dev;
+ u8 dev_irq_index;
+ struct fsl_mc_resource resource;
+};
+
+#define to_fsl_mc_irq(_mc_resource) \
+ container_of(_mc_resource, struct fsl_mc_device_irq, resource)
+
+/* Opened state - Indicates that an object is open by at least one owner */
+#define FSL_MC_OBJ_STATE_OPEN 0x00000001
+/* Plugged state - Indicates that the object is plugged */
+#define FSL_MC_OBJ_STATE_PLUGGED 0x00000002
+
+/**
+ * Shareability flag - Object flag indicating no memory shareability.
+ * the object generates memory accesses that are non coherent with other
+ * masters;
+ * user is responsible for proper memory handling through IOMMU configuration.
+ */
+#define FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY 0x0001
+
+/**
+ * struct fsl_mc_obj_desc - Object descriptor
+ * @type: Type of object: NULL terminated string
+ * @id: ID of logical object resource
+ * @vendor: Object vendor identifier
+ * @ver_major: Major version number
+ * @ver_minor: Minor version number
+ * @irq_count: Number of interrupts supported by the object
+ * @region_count: Number of mappable regions supported by the object
+ * @state: Object state: combination of FSL_MC_OBJ_STATE_ states
+ * @label: Object label: NULL terminated string
+ * @flags: Object's flags
+ */
+struct fsl_mc_obj_desc {
+ char type[16];
+ int id;
+ u16 vendor;
+ u16 ver_major;
+ u16 ver_minor;
+ u8 irq_count;
+ u8 region_count;
+ u32 state;
+ char label[16];
+ u16 flags;
+};
+
+/**
+ * Bit masks for a MC object device (struct fsl_mc_device) flags
+ */
+#define FSL_MC_IS_DPRC 0x0001
+
+/**
+ * struct fsl_mc_device - MC object device object
+ * @dev: Linux driver model device object
+ * @dma_mask: Default DMA mask
+ * @flags: MC object device flags
+ * @icid: Isolation context ID for the device
+ * @mc_handle: MC handle for the corresponding MC object opened
+ * @mc_io: Pointer to MC IO object assigned to this device or
+ * NULL if none.
+ * @obj_desc: MC description of the DPAA device
+ * @regions: pointer to array of MMIO region entries
+ * @irqs: pointer to array of pointers to interrupts allocated to this device
+ * @resource: generic resource associated with this MC object device, if any.
+ *
+ * Generic device object for MC object devices that are "attached" to a
+ * MC bus.
+ *
+ * NOTES:
+ * - For a non-DPRC object its icid is the same as its parent DPRC's icid.
+ * - The SMMU notifier callback gets invoked after device_add() has been
+ * called for an MC object device, but before the device-specific probe
+ * callback gets called.
+ * - DP_OBJ_DPRC objects are the only MC objects that have built-in MC
+ * portals. For all other MC objects, their device drivers are responsible for
+ * allocating MC portals for them by calling fsl_mc_portal_allocate().
+ * - Some types of MC objects (e.g., DP_OBJ_DPBP, DP_OBJ_DPCON) are
+ * treated as resources that can be allocated/deallocated from the
+ * corresponding resource pool in the object's parent DPRC, using the
+ * fsl_mc_object_allocate()/fsl_mc_object_free() functions. These MC objects
+ * are known as "allocatable" objects. For them, the corresponding
+ * fsl_mc_device's 'resource' points to the associated resource object.
+ * For MC objects that are not allocatable (e.g., DP_OBJ_DPRC, DP_OBJ_DPNI),
+ * 'resource' is NULL.
+ */
+struct fsl_mc_device {
+ struct device dev;
+ u64 dma_mask;
+ u16 flags;
+ u16 icid;
+ u16 mc_handle;
+ struct fsl_mc_io *mc_io;
+ struct fsl_mc_obj_desc obj_desc;
+ struct resource *regions;
+ struct fsl_mc_device_irq **irqs;
+ struct fsl_mc_resource *resource;
+};
+
+#define to_fsl_mc_device(_dev) \
+ container_of(_dev, struct fsl_mc_device, dev)
+
+#define MC_CMD_NUM_OF_PARAMS 7
+
+struct mc_cmd_header {
+ u8 src_id;
+ u8 flags_hw;
+ u8 status;
+ u8 flags_sw;
+ __le16 token;
+ __le16 cmd_id;
+};
+
+struct mc_command {
+ u64 header;
+ u64 params[MC_CMD_NUM_OF_PARAMS];
+};
+
+enum mc_cmd_status {
+ MC_CMD_STATUS_OK = 0x0, /* Completed successfully */
+ MC_CMD_STATUS_READY = 0x1, /* Ready to be processed */
+ MC_CMD_STATUS_AUTH_ERR = 0x3, /* Authentication error */
+ MC_CMD_STATUS_NO_PRIVILEGE = 0x4, /* No privilege */
+ MC_CMD_STATUS_DMA_ERR = 0x5, /* DMA or I/O error */
+ MC_CMD_STATUS_CONFIG_ERR = 0x6, /* Configuration error */
+ MC_CMD_STATUS_TIMEOUT = 0x7, /* Operation timed out */
+ MC_CMD_STATUS_NO_RESOURCE = 0x8, /* No resources */
+ MC_CMD_STATUS_NO_MEMORY = 0x9, /* No memory available */
+ MC_CMD_STATUS_BUSY = 0xA, /* Device is busy */
+ MC_CMD_STATUS_UNSUPPORTED_OP = 0xB, /* Unsupported operation */
+ MC_CMD_STATUS_INVALID_STATE = 0xC /* Invalid state */
+};
+
+/*
+ * MC command flags
+ */
+
+/* High priority flag */
+#define MC_CMD_FLAG_PRI 0x80
+/* Command completion flag */
+#define MC_CMD_FLAG_INTR_DIS 0x01
+
+static inline u64 mc_encode_cmd_header(u16 cmd_id,
+ u32 cmd_flags,
+ u16 token)
+{
+ u64 header = 0;
+ struct mc_cmd_header *hdr = (struct mc_cmd_header *)&header;
+
+ hdr->cmd_id = cpu_to_le16(cmd_id);
+ hdr->token = cpu_to_le16(token);
+ hdr->status = MC_CMD_STATUS_READY;
+ if (cmd_flags & MC_CMD_FLAG_PRI)
+ hdr->flags_hw = MC_CMD_FLAG_PRI;
+ if (cmd_flags & MC_CMD_FLAG_INTR_DIS)
+ hdr->flags_sw = MC_CMD_FLAG_INTR_DIS;
+
+ return header;
+}
+
+static inline u16 mc_cmd_hdr_read_token(struct mc_command *cmd)
+{
+ struct mc_cmd_header *hdr = (struct mc_cmd_header *)&cmd->header;
+ u16 token = le16_to_cpu(hdr->token);
+
+ return token;
+}
+
+struct mc_rsp_create {
+ __le32 object_id;
+};
+
+struct mc_rsp_api_ver {
+ __le16 major_ver;
+ __le16 minor_ver;
+};
+
+static inline u32 mc_cmd_read_object_id(struct mc_command *cmd)
+{
+ struct mc_rsp_create *rsp_params;
+
+ rsp_params = (struct mc_rsp_create *)cmd->params;
+ return le32_to_cpu(rsp_params->object_id);
+}
+
+static inline void mc_cmd_read_api_version(struct mc_command *cmd,
+ u16 *major_ver,
+ u16 *minor_ver)
+{
+ struct mc_rsp_api_ver *rsp_params;
+
+ rsp_params = (struct mc_rsp_api_ver *)cmd->params;
+ *major_ver = le16_to_cpu(rsp_params->major_ver);
+ *minor_ver = le16_to_cpu(rsp_params->minor_ver);
+}
+
+/**
+ * Bit masks for a MC I/O object (struct fsl_mc_io) flags
+ */
+#define FSL_MC_IO_ATOMIC_CONTEXT_PORTAL 0x0001
+
+/**
+ * struct fsl_mc_io - MC I/O object to be passed-in to mc_send_command()
+ * @dev: device associated with this Mc I/O object
+ * @flags: flags for mc_send_command()
+ * @portal_size: MC command portal size in bytes
+ * @portal_phys_addr: MC command portal physical address
+ * @portal_virt_addr: MC command portal virtual address
+ * @dpmcp_dev: pointer to the DPMCP device associated with the MC portal.
+ *
+ * Fields are only meaningful if the FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is not
+ * set:
+ * @mutex: Mutex to serialize mc_send_command() calls that use the same MC
+ * portal, if the fsl_mc_io object was created with the
+ * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag off. mc_send_command() calls for this
+ * fsl_mc_io object must be made only from non-atomic context.
+ *
+ * Fields are only meaningful if the FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is
+ * set:
+ * @spinlock: Spinlock to serialize mc_send_command() calls that use the same MC
+ * portal, if the fsl_mc_io object was created with the
+ * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag on. mc_send_command() calls for this
+ * fsl_mc_io object can be made from atomic or non-atomic context.
+ */
+struct fsl_mc_io {
+ struct device *dev;
+ u16 flags;
+ u32 portal_size;
+ phys_addr_t portal_phys_addr;
+ void __iomem *portal_virt_addr;
+ struct fsl_mc_device *dpmcp_dev;
+ union {
+ /*
+ * This field is only meaningful if the
+ * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is not set
+ */
+ struct mutex mutex; /* serializes mc_send_command() */
+
+ /*
+ * This field is only meaningful if the
+ * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is set
+ */
+ spinlock_t spinlock; /* serializes mc_send_command() */
+ };
+};
+
+int mc_send_command(struct fsl_mc_io *mc_io, struct mc_command *cmd);
+
+#ifdef CONFIG_FSL_MC_BUS
+#define dev_is_fsl_mc(_dev) ((_dev)->bus == &fsl_mc_bus_type)
+#else
+/* If fsl-mc bus is not present device cannot belong to fsl-mc bus */
+#define dev_is_fsl_mc(_dev) (0)
+#endif
+
+/*
+ * module_fsl_mc_driver() - Helper macro for drivers that don't do
+ * anything special in module init/exit. This eliminates a lot of
+ * boilerplate. Each module may only use this macro once, and
+ * calling it replaces module_init() and module_exit()
+ */
+#define module_fsl_mc_driver(__fsl_mc_driver) \
+ module_driver(__fsl_mc_driver, fsl_mc_driver_register, \
+ fsl_mc_driver_unregister)
+
+/*
+ * Macro to avoid include chaining to get THIS_MODULE
+ */
+#define fsl_mc_driver_register(drv) \
+ __fsl_mc_driver_register(drv, THIS_MODULE)
+
+int __must_check __fsl_mc_driver_register(struct fsl_mc_driver *fsl_mc_driver,
+ struct module *owner);
+
+void fsl_mc_driver_unregister(struct fsl_mc_driver *driver);
+
+int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
+ u16 mc_io_flags,
+ struct fsl_mc_io **new_mc_io);
+
+void fsl_mc_portal_free(struct fsl_mc_io *mc_io);
+
+int fsl_mc_portal_reset(struct fsl_mc_io *mc_io);
+
+int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev,
+ enum fsl_mc_pool_type pool_type,
+ struct fsl_mc_device **new_mc_adev);
+
+void fsl_mc_object_free(struct fsl_mc_device *mc_adev);
+
+struct irq_domain *fsl_mc_msi_create_irq_domain(struct fwnode_handle *fwnode,
+ struct msi_domain_info *info,
+ struct irq_domain *parent);
+
+int __must_check fsl_mc_allocate_irqs(struct fsl_mc_device *mc_dev);
+
+void fsl_mc_free_irqs(struct fsl_mc_device *mc_dev);
+
+extern struct bus_type fsl_mc_bus_type;
+
+extern struct device_type fsl_mc_bus_dprc_type;
+extern struct device_type fsl_mc_bus_dpni_type;
+extern struct device_type fsl_mc_bus_dpio_type;
+extern struct device_type fsl_mc_bus_dpsw_type;
+extern struct device_type fsl_mc_bus_dpbp_type;
+extern struct device_type fsl_mc_bus_dpcon_type;
+extern struct device_type fsl_mc_bus_dpmcp_type;
+extern struct device_type fsl_mc_bus_dpmac_type;
+extern struct device_type fsl_mc_bus_dprtc_type;
+
+static inline bool is_fsl_mc_bus_dprc(const struct fsl_mc_device *mc_dev)
+{
+ return mc_dev->dev.type == &fsl_mc_bus_dprc_type;
+}
+
+static inline bool is_fsl_mc_bus_dpni(const struct fsl_mc_device *mc_dev)
+{
+ return mc_dev->dev.type == &fsl_mc_bus_dpni_type;
+}
+
+static inline bool is_fsl_mc_bus_dpio(const struct fsl_mc_device *mc_dev)
+{
+ return mc_dev->dev.type == &fsl_mc_bus_dpio_type;
+}
+
+static inline bool is_fsl_mc_bus_dpsw(const struct fsl_mc_device *mc_dev)
+{
+ return mc_dev->dev.type == &fsl_mc_bus_dpsw_type;
+}
+
+static inline bool is_fsl_mc_bus_dpbp(const struct fsl_mc_device *mc_dev)
+{
+ return mc_dev->dev.type == &fsl_mc_bus_dpbp_type;
+}
+
+static inline bool is_fsl_mc_bus_dpcon(const struct fsl_mc_device *mc_dev)
+{
+ return mc_dev->dev.type == &fsl_mc_bus_dpcon_type;
+}
+
+static inline bool is_fsl_mc_bus_dpmcp(const struct fsl_mc_device *mc_dev)
+{
+ return mc_dev->dev.type == &fsl_mc_bus_dpmcp_type;
+}
+
+static inline bool is_fsl_mc_bus_dpmac(const struct fsl_mc_device *mc_dev)
+{
+ return mc_dev->dev.type == &fsl_mc_bus_dpmac_type;
+}
+
+static inline bool is_fsl_mc_bus_dprtc(const struct fsl_mc_device *mc_dev)
+{
+ return mc_dev->dev.type == &fsl_mc_bus_dprtc_type;
+}
+
+#endif /* _FSL_MC_H_ */
--
2.7.4
Now that the fsl-mc bus core infrastructure is out of staging, the
remaining irqchip glue code used (irq-gic-v3-its-fsl-mc-msi.c) goes
to drivers/irqchip.
Signed-off-by: Stuart Yoder <[email protected]>
[rebased, add dpaa2_eth and dpio #include updates]
Signed-off-by: Laurentiu Tudor <[email protected]>
[rebased, split irqchip to separate patch]
Signed-off-by: Bogdan Purcareata <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Jason Cooper <[email protected]>
Cc: Marc Zyngier <[email protected]>
---
Notes:
-v5:
- split irqchip glue code to separate patch (GregKH)
-v4 - v1:
- no change
drivers/irqchip/Makefile | 1 +
drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c | 100 +++++++++++++++++++++
drivers/staging/fsl-mc/bus/Makefile | 3 +-
.../staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c | 100 ---------------------
4 files changed, 102 insertions(+), 102 deletions(-)
create mode 100644 drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c
delete mode 100644 drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c
diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index d2df34a..641d8a4 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -32,6 +32,7 @@ obj-$(CONFIG_ARM_GIC_V2M) += irq-gic-v2m.o
obj-$(CONFIG_ARM_GIC_V3) += irq-gic-v3.o irq-gic-common.o
obj-$(CONFIG_ARM_GIC_V3_ITS) += irq-gic-v3-its.o irq-gic-v3-its-platform-msi.o irq-gic-v4.o
obj-$(CONFIG_ARM_GIC_V3_ITS_PCI) += irq-gic-v3-its-pci-msi.o
+obj-$(CONFIG_FSL_MC_BUS) += irq-gic-v3-its-fsl-mc-msi.o
obj-$(CONFIG_PARTITION_PERCPU) += irq-partition-percpu.o
obj-$(CONFIG_HISILICON_IRQ_MBIGEN) += irq-mbigen.o
obj-$(CONFIG_ARM_NVIC) += irq-nvic.o
diff --git a/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c b/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c
new file mode 100644
index 0000000..b365fbb
--- /dev/null
+++ b/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c
@@ -0,0 +1,100 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Freescale Management Complex (MC) bus driver MSI support
+ *
+ * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
+ * Author: German Rivera <[email protected]>
+ *
+ */
+
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+#include <linux/irq.h>
+#include <linux/msi.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/fsl/mc.h>
+
+static struct irq_chip its_msi_irq_chip = {
+ .name = "ITS-fMSI",
+ .irq_mask = irq_chip_mask_parent,
+ .irq_unmask = irq_chip_unmask_parent,
+ .irq_eoi = irq_chip_eoi_parent,
+ .irq_set_affinity = msi_domain_set_affinity
+};
+
+static int its_fsl_mc_msi_prepare(struct irq_domain *msi_domain,
+ struct device *dev,
+ int nvec, msi_alloc_info_t *info)
+{
+ struct fsl_mc_device *mc_bus_dev;
+ struct msi_domain_info *msi_info;
+
+ if (!dev_is_fsl_mc(dev))
+ return -EINVAL;
+
+ mc_bus_dev = to_fsl_mc_device(dev);
+ if (!(mc_bus_dev->flags & FSL_MC_IS_DPRC))
+ return -EINVAL;
+
+ /*
+ * Set the device Id to be passed to the GIC-ITS:
+ *
+ * NOTE: This device id corresponds to the IOMMU stream ID
+ * associated with the DPRC object (ICID).
+ */
+#ifdef GENERIC_MSI_DOMAIN_OPS
+ info->scratchpad[0].ul = mc_bus_dev->icid;
+#endif
+ msi_info = msi_get_domain_info(msi_domain->parent);
+ return msi_info->ops->msi_prepare(msi_domain->parent, dev, nvec, info);
+}
+
+static struct msi_domain_ops its_fsl_mc_msi_ops __ro_after_init = {
+ .msi_prepare = its_fsl_mc_msi_prepare,
+};
+
+static struct msi_domain_info its_fsl_mc_msi_domain_info = {
+ .flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS),
+ .ops = &its_fsl_mc_msi_ops,
+ .chip = &its_msi_irq_chip,
+};
+
+static const struct of_device_id its_device_id[] = {
+ { .compatible = "arm,gic-v3-its", },
+ {},
+};
+
+static int __init its_fsl_mc_msi_init(void)
+{
+ struct device_node *np;
+ struct irq_domain *parent;
+ struct irq_domain *mc_msi_domain;
+
+ for (np = of_find_matching_node(NULL, its_device_id); np;
+ np = of_find_matching_node(np, its_device_id)) {
+ if (!of_property_read_bool(np, "msi-controller"))
+ continue;
+
+ parent = irq_find_matching_host(np, DOMAIN_BUS_NEXUS);
+ if (!parent || !msi_get_domain_info(parent)) {
+ pr_err("%pOF: unable to locate ITS domain\n", np);
+ continue;
+ }
+
+ mc_msi_domain = fsl_mc_msi_create_irq_domain(
+ of_node_to_fwnode(np),
+ &its_fsl_mc_msi_domain_info,
+ parent);
+ if (!mc_msi_domain) {
+ pr_err("%pOF: unable to create fsl-mc domain\n", np);
+ continue;
+ }
+
+ pr_info("fsl-mc MSI: %pOF domain created\n", np);
+ }
+
+ return 0;
+}
+
+early_initcall(its_fsl_mc_msi_init);
diff --git a/drivers/staging/fsl-mc/bus/Makefile b/drivers/staging/fsl-mc/bus/Makefile
index 18b1b5f..b67889e 100644
--- a/drivers/staging/fsl-mc/bus/Makefile
+++ b/drivers/staging/fsl-mc/bus/Makefile
@@ -4,8 +4,7 @@
#
# Copyright (C) 2014 Freescale Semiconductor, Inc.
#
-obj-$(CONFIG_FSL_MC_BUS) += irq-gic-v3-its-fsl-mc-msi.o \
- dpbp.o \
+obj-$(CONFIG_FSL_MC_BUS) += dpbp.o \
dpcon.o
# MC DPIO driver
diff --git a/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c b/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c
deleted file mode 100644
index b365fbb..0000000
--- a/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c
+++ /dev/null
@@ -1,100 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Freescale Management Complex (MC) bus driver MSI support
- *
- * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
- * Author: German Rivera <[email protected]>
- *
- */
-
-#include <linux/of_device.h>
-#include <linux/of_address.h>
-#include <linux/irq.h>
-#include <linux/msi.h>
-#include <linux/of.h>
-#include <linux/of_irq.h>
-#include <linux/fsl/mc.h>
-
-static struct irq_chip its_msi_irq_chip = {
- .name = "ITS-fMSI",
- .irq_mask = irq_chip_mask_parent,
- .irq_unmask = irq_chip_unmask_parent,
- .irq_eoi = irq_chip_eoi_parent,
- .irq_set_affinity = msi_domain_set_affinity
-};
-
-static int its_fsl_mc_msi_prepare(struct irq_domain *msi_domain,
- struct device *dev,
- int nvec, msi_alloc_info_t *info)
-{
- struct fsl_mc_device *mc_bus_dev;
- struct msi_domain_info *msi_info;
-
- if (!dev_is_fsl_mc(dev))
- return -EINVAL;
-
- mc_bus_dev = to_fsl_mc_device(dev);
- if (!(mc_bus_dev->flags & FSL_MC_IS_DPRC))
- return -EINVAL;
-
- /*
- * Set the device Id to be passed to the GIC-ITS:
- *
- * NOTE: This device id corresponds to the IOMMU stream ID
- * associated with the DPRC object (ICID).
- */
-#ifdef GENERIC_MSI_DOMAIN_OPS
- info->scratchpad[0].ul = mc_bus_dev->icid;
-#endif
- msi_info = msi_get_domain_info(msi_domain->parent);
- return msi_info->ops->msi_prepare(msi_domain->parent, dev, nvec, info);
-}
-
-static struct msi_domain_ops its_fsl_mc_msi_ops __ro_after_init = {
- .msi_prepare = its_fsl_mc_msi_prepare,
-};
-
-static struct msi_domain_info its_fsl_mc_msi_domain_info = {
- .flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS),
- .ops = &its_fsl_mc_msi_ops,
- .chip = &its_msi_irq_chip,
-};
-
-static const struct of_device_id its_device_id[] = {
- { .compatible = "arm,gic-v3-its", },
- {},
-};
-
-static int __init its_fsl_mc_msi_init(void)
-{
- struct device_node *np;
- struct irq_domain *parent;
- struct irq_domain *mc_msi_domain;
-
- for (np = of_find_matching_node(NULL, its_device_id); np;
- np = of_find_matching_node(np, its_device_id)) {
- if (!of_property_read_bool(np, "msi-controller"))
- continue;
-
- parent = irq_find_matching_host(np, DOMAIN_BUS_NEXUS);
- if (!parent || !msi_get_domain_info(parent)) {
- pr_err("%pOF: unable to locate ITS domain\n", np);
- continue;
- }
-
- mc_msi_domain = fsl_mc_msi_create_irq_domain(
- of_node_to_fwnode(np),
- &its_fsl_mc_msi_domain_info,
- parent);
- if (!mc_msi_domain) {
- pr_err("%pOF: unable to create fsl-mc domain\n", np);
- continue;
- }
-
- pr_info("fsl-mc MSI: %pOF domain created\n", np);
- }
-
- return 0;
-}
-
-early_initcall(its_fsl_mc_msi_init);
--
2.7.4
On 26/01/18 12:51, Bogdan Purcareata wrote:
> Now that the fsl-mc bus core infrastructure is out of staging, the
> remaining irqchip glue code used (irq-gic-v3-its-fsl-mc-msi.c) goes
> to drivers/irqchip.
>
> Signed-off-by: Stuart Yoder <[email protected]>
> [rebased, add dpaa2_eth and dpio #include updates]
> Signed-off-by: Laurentiu Tudor <[email protected]>
> [rebased, split irqchip to separate patch]
> Signed-off-by: Bogdan Purcareata <[email protected]>
> Cc: Thomas Gleixner <[email protected]>
> Cc: Jason Cooper <[email protected]>
> Cc: Marc Zyngier <[email protected]>
> ---
> Notes:
> -v5:
> - split irqchip glue code to separate patch (GregKH)
> -v4 - v1:
> - no change
>
> drivers/irqchip/Makefile | 1 +
> drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c | 100 +++++++++++++++++++++
> drivers/staging/fsl-mc/bus/Makefile | 3 +-
> .../staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c | 100 ---------------------
> 4 files changed, 102 insertions(+), 102 deletions(-)
> create mode 100644 drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c
> delete mode 100644 drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c
>
> diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
> index d2df34a..641d8a4 100644
> --- a/drivers/irqchip/Makefile
> +++ b/drivers/irqchip/Makefile
> @@ -32,6 +32,7 @@ obj-$(CONFIG_ARM_GIC_V2M) += irq-gic-v2m.o
> obj-$(CONFIG_ARM_GIC_V3) += irq-gic-v3.o irq-gic-common.o
> obj-$(CONFIG_ARM_GIC_V3_ITS) += irq-gic-v3-its.o irq-gic-v3-its-platform-msi.o irq-gic-v4.o
> obj-$(CONFIG_ARM_GIC_V3_ITS_PCI) += irq-gic-v3-its-pci-msi.o
> +obj-$(CONFIG_FSL_MC_BUS) += irq-gic-v3-its-fsl-mc-msi.o
> obj-$(CONFIG_PARTITION_PERCPU) += irq-partition-percpu.o
> obj-$(CONFIG_HISILICON_IRQ_MBIGEN) += irq-mbigen.o
> obj-$(CONFIG_ARM_NVIC) += irq-nvic.o
> diff --git a/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c b/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c
> new file mode 100644
> index 0000000..b365fbb
> --- /dev/null
> +++ b/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c
> @@ -0,0 +1,100 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Freescale Management Complex (MC) bus driver MSI support
> + *
> + * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
> + * Author: German Rivera <[email protected]>
> + *
> + */
> +
> +#include <linux/of_device.h>
> +#include <linux/of_address.h>
> +#include <linux/irq.h>
> +#include <linux/msi.h>
> +#include <linux/of.h>
> +#include <linux/of_irq.h>
> +#include <linux/fsl/mc.h>
> +
> +static struct irq_chip its_msi_irq_chip = {
> + .name = "ITS-fMSI",
> + .irq_mask = irq_chip_mask_parent,
> + .irq_unmask = irq_chip_unmask_parent,
> + .irq_eoi = irq_chip_eoi_parent,
> + .irq_set_affinity = msi_domain_set_affinity
> +};
> +
> +static int its_fsl_mc_msi_prepare(struct irq_domain *msi_domain,
> + struct device *dev,
> + int nvec, msi_alloc_info_t *info)
> +{
> + struct fsl_mc_device *mc_bus_dev;
> + struct msi_domain_info *msi_info;
> +
> + if (!dev_is_fsl_mc(dev))
> + return -EINVAL;
> +
> + mc_bus_dev = to_fsl_mc_device(dev);
> + if (!(mc_bus_dev->flags & FSL_MC_IS_DPRC))
> + return -EINVAL;
> +
> + /*
> + * Set the device Id to be passed to the GIC-ITS:
> + *
> + * NOTE: This device id corresponds to the IOMMU stream ID
> + * associated with the DPRC object (ICID).
> + */
> +#ifdef GENERIC_MSI_DOMAIN_OPS
> + info->scratchpad[0].ul = mc_bus_dev->icid;
> +#endif
I'd really like to avoid this kind of condition in irqchip drivers.
Either the architecture you're targeting this at can deal with it, and
you can compile this driver, or it doesn't, and you really shouldn't
offer it. And given that this thing is 100% specific to the ARM GICv3
ITS, you should really have a dependency on it.
Thanks,
M.
--
Jazz is not dead. It just smells funny...
On Fri, Jan 26, 2018 at 06:51:26AM -0600, Bogdan Purcareata wrote:
> Move the source files out of staging into their final locations:
> -mc.h include file in drivers/staging/fsl-mc/include go to include/linux/fsl
> -source files in drivers/staging/fsl-mc/bus go to drivers/bus/fsl-mc
> -overview.rst, providing an overview of DPAA2, goes to
> Documentation/networking/dpaa2/overview.rst
>
> Update or delete other remaining staging files -- Makefile, Kconfig, TODO.
> Update dpaa2_eth and dpio staging drivers.
> Add integration bits for the documentation build system.
>
> Signed-off-by: Stuart Yoder <[email protected]>
> [rebased, add dpaa2_eth and dpio #include updates]
> Signed-off-by: Laurentiu Tudor <[email protected]>
> [rebased, split irqchip to separate patch]
> Signed-off-by: Bogdan Purcareata <[email protected]>
> Cc: Thomas Gleixner <[email protected]>
> Cc: Jason Cooper <[email protected]>
> Cc: Marc Zyngier <[email protected]>
> ---
> Notes:
> -v5:
> - split irqchip glue code to separate patch (GregKH)
> - integrate doc with the kernel build system
> -v4:
> - regenerated patch with renames detection disabled (Andrew Lunn)
> -v3:
> - rebased
> -v2:
> - group irqchip gic its glue code together with the rest (Marc Zyngier)
>
> Documentation/networking/dpaa2/index.rst | 8 +
> Documentation/networking/dpaa2/overview.rst | 404 +++++++++
> Documentation/networking/index.rst | 1 +
> MAINTAINERS | 3 +-
> drivers/bus/Kconfig | 2 +
> drivers/bus/Makefile | 4 +
> drivers/bus/fsl-mc/Kconfig | 16 +
> drivers/bus/fsl-mc/Makefile | 16 +
> drivers/bus/fsl-mc/dpmcp.c | 99 +++
> drivers/bus/fsl-mc/dprc-driver.c | 809 ++++++++++++++++++
> drivers/bus/fsl-mc/dprc.c | 532 ++++++++++++
> drivers/bus/fsl-mc/fsl-mc-allocator.c | 648 ++++++++++++++
> drivers/bus/fsl-mc/fsl-mc-bus.c | 948 +++++++++++++++++++++
> drivers/bus/fsl-mc/fsl-mc-msi.c | 285 +++++++
> drivers/bus/fsl-mc/fsl-mc-private.h | 475 +++++++++++
> drivers/bus/fsl-mc/mc-io.c | 268 ++++++
> drivers/bus/fsl-mc/mc-sys.c | 296 +++++++
> drivers/staging/fsl-dpaa2/ethernet/README | 2 +-
> drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c | 2 +-
> drivers/staging/fsl-dpaa2/ethernet/dpni.c | 2 +-
> drivers/staging/fsl-mc/TODO | 18 -
> drivers/staging/fsl-mc/bus/Kconfig | 10 -
> drivers/staging/fsl-mc/bus/Makefile | 16 +-
> drivers/staging/fsl-mc/bus/dpbp.c | 2 +-
> drivers/staging/fsl-mc/bus/dpcon.c | 2 +-
> drivers/staging/fsl-mc/bus/dpio/dpio-driver.c | 2 +-
> drivers/staging/fsl-mc/bus/dpio/dpio-service.c | 2 +-
> drivers/staging/fsl-mc/bus/dpio/dpio.c | 2 +-
> drivers/staging/fsl-mc/bus/dpmcp.c | 99 ---
> drivers/staging/fsl-mc/bus/dprc-driver.c | 809 ------------------
> drivers/staging/fsl-mc/bus/dprc.c | 531 ------------
> drivers/staging/fsl-mc/bus/fsl-mc-allocator.c | 648 --------------
> drivers/staging/fsl-mc/bus/fsl-mc-bus.c | 948 ---------------------
> drivers/staging/fsl-mc/bus/fsl-mc-msi.c | 284 ------
> drivers/staging/fsl-mc/bus/fsl-mc-private.h | 475 -----------
> .../staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c | 2 +-
> drivers/staging/fsl-mc/bus/mc-io.c | 268 ------
> drivers/staging/fsl-mc/bus/mc-sys.c | 296 -------
> drivers/staging/fsl-mc/include/mc.h | 454 ----------
> drivers/staging/fsl-mc/overview.rst | 404 ---------
> include/linux/fsl/mc.h | 454 ++++++++++
> 41 files changed, 5279 insertions(+), 5267 deletions(-)
> create mode 100644 Documentation/networking/dpaa2/index.rst
> create mode 100644 Documentation/networking/dpaa2/overview.rst
> create mode 100644 drivers/bus/fsl-mc/Kconfig
> create mode 100644 drivers/bus/fsl-mc/Makefile
> create mode 100644 drivers/bus/fsl-mc/dpmcp.c
> create mode 100644 drivers/bus/fsl-mc/dprc-driver.c
> create mode 100644 drivers/bus/fsl-mc/dprc.c
> create mode 100644 drivers/bus/fsl-mc/fsl-mc-allocator.c
> create mode 100644 drivers/bus/fsl-mc/fsl-mc-bus.c
> create mode 100644 drivers/bus/fsl-mc/fsl-mc-msi.c
> create mode 100644 drivers/bus/fsl-mc/fsl-mc-private.h
> create mode 100644 drivers/bus/fsl-mc/mc-io.c
> create mode 100644 drivers/bus/fsl-mc/mc-sys.c
> delete mode 100644 drivers/staging/fsl-mc/TODO
> delete mode 100644 drivers/staging/fsl-mc/bus/dpmcp.c
> delete mode 100644 drivers/staging/fsl-mc/bus/dprc-driver.c
> delete mode 100644 drivers/staging/fsl-mc/bus/dprc.c
> delete mode 100644 drivers/staging/fsl-mc/bus/fsl-mc-allocator.c
> delete mode 100644 drivers/staging/fsl-mc/bus/fsl-mc-bus.c
> delete mode 100644 drivers/staging/fsl-mc/bus/fsl-mc-msi.c
> delete mode 100644 drivers/staging/fsl-mc/bus/fsl-mc-private.h
> delete mode 100644 drivers/staging/fsl-mc/bus/mc-io.c
> delete mode 100644 drivers/staging/fsl-mc/bus/mc-sys.c
> delete mode 100644 drivers/staging/fsl-mc/include/mc.h
> delete mode 100644 drivers/staging/fsl-mc/overview.rst
> create mode 100644 include/linux/fsl/mc.h
I thought you were creating this with -M to git format-patch, what
happened? That will show the files being renamed, not just deleted and
added.
thanks,
greg k-h
> -----Original Message-----
> From: Greg KH [mailto:[email protected]]
> Sent: Friday, January 26, 2018 4:06 PM
> To: Bogdan Purcareata <[email protected]>
> Cc: Laurentiu Tudor <[email protected]>; Ruxandra Ioana Ciocoi Radulescu
> <[email protected]>; [email protected]; [email protected];
> [email protected]; Ioana Ciornei <[email protected]>; Nipun Gupta
> <[email protected]>; Roy Pledge <[email protected]>; Horia Geant?
> <[email protected]>; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]
> Subject: Re: [PATCH v5 1/2] staging: fsl-mc: Move core bus out of staging
>
> On Fri, Jan 26, 2018 at 06:51:26AM -0600, Bogdan Purcareata wrote:
> > Move the source files out of staging into their final locations:
> > -mc.h include file in drivers/staging/fsl-mc/include go to
> include/linux/fsl
> > -source files in drivers/staging/fsl-mc/bus go to drivers/bus/fsl-mc
> > -overview.rst, providing an overview of DPAA2, goes to
> > Documentation/networking/dpaa2/overview.rst
> >
> > Update or delete other remaining staging files -- Makefile, Kconfig, TODO.
> > Update dpaa2_eth and dpio staging drivers.
> > Add integration bits for the documentation build system.
> >
> > Signed-off-by: Stuart Yoder <[email protected]>
> > [rebased, add dpaa2_eth and dpio #include updates]
> > Signed-off-by: Laurentiu Tudor <[email protected]>
> > [rebased, split irqchip to separate patch]
> > Signed-off-by: Bogdan Purcareata <[email protected]>
> > Cc: Thomas Gleixner <[email protected]>
> > Cc: Jason Cooper <[email protected]>
> > Cc: Marc Zyngier <[email protected]>
> > ---
> > Notes:
> > -v5:
> > - split irqchip glue code to separate patch (GregKH)
> > - integrate doc with the kernel build system
> > -v4:
> > - regenerated patch with renames detection disabled (Andrew Lunn)
> > -v3:
> > - rebased
> > -v2:
> > - group irqchip gic its glue code together with the rest (Marc Zyngier)
> >
> > Documentation/networking/dpaa2/index.rst | 8 +
> > Documentation/networking/dpaa2/overview.rst | 404 +++++++++
> > Documentation/networking/index.rst | 1 +
> > MAINTAINERS | 3 +-
> > drivers/bus/Kconfig | 2 +
> > drivers/bus/Makefile | 4 +
> > drivers/bus/fsl-mc/Kconfig | 16 +
> > drivers/bus/fsl-mc/Makefile | 16 +
> > drivers/bus/fsl-mc/dpmcp.c | 99 +++
> > drivers/bus/fsl-mc/dprc-driver.c | 809 ++++++++++++++++++
> > drivers/bus/fsl-mc/dprc.c | 532 ++++++++++++
> > drivers/bus/fsl-mc/fsl-mc-allocator.c | 648 ++++++++++++++
> > drivers/bus/fsl-mc/fsl-mc-bus.c | 948
> +++++++++++++++++++++
> > drivers/bus/fsl-mc/fsl-mc-msi.c | 285 +++++++
> > drivers/bus/fsl-mc/fsl-mc-private.h | 475 +++++++++++
> > drivers/bus/fsl-mc/mc-io.c | 268 ++++++
> > drivers/bus/fsl-mc/mc-sys.c | 296 +++++++
> > drivers/staging/fsl-dpaa2/ethernet/README | 2 +-
> > drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c | 2 +-
> > drivers/staging/fsl-dpaa2/ethernet/dpni.c | 2 +-
> > drivers/staging/fsl-mc/TODO | 18 -
> > drivers/staging/fsl-mc/bus/Kconfig | 10 -
> > drivers/staging/fsl-mc/bus/Makefile | 16 +-
> > drivers/staging/fsl-mc/bus/dpbp.c | 2 +-
> > drivers/staging/fsl-mc/bus/dpcon.c | 2 +-
> > drivers/staging/fsl-mc/bus/dpio/dpio-driver.c | 2 +-
> > drivers/staging/fsl-mc/bus/dpio/dpio-service.c | 2 +-
> > drivers/staging/fsl-mc/bus/dpio/dpio.c | 2 +-
> > drivers/staging/fsl-mc/bus/dpmcp.c | 99 ---
> > drivers/staging/fsl-mc/bus/dprc-driver.c | 809 ------------------
> > drivers/staging/fsl-mc/bus/dprc.c | 531 ------------
> > drivers/staging/fsl-mc/bus/fsl-mc-allocator.c | 648 --------------
> > drivers/staging/fsl-mc/bus/fsl-mc-bus.c | 948 -------------------
> --
> > drivers/staging/fsl-mc/bus/fsl-mc-msi.c | 284 ------
> > drivers/staging/fsl-mc/bus/fsl-mc-private.h | 475 -----------
> > .../staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c | 2 +-
> > drivers/staging/fsl-mc/bus/mc-io.c | 268 ------
> > drivers/staging/fsl-mc/bus/mc-sys.c | 296 -------
> > drivers/staging/fsl-mc/include/mc.h | 454 ----------
> > drivers/staging/fsl-mc/overview.rst | 404 ---------
> > include/linux/fsl/mc.h | 454 ++++++++++
> > 41 files changed, 5279 insertions(+), 5267 deletions(-)
> > create mode 100644 Documentation/networking/dpaa2/index.rst
> > create mode 100644 Documentation/networking/dpaa2/overview.rst
> > create mode 100644 drivers/bus/fsl-mc/Kconfig
> > create mode 100644 drivers/bus/fsl-mc/Makefile
> > create mode 100644 drivers/bus/fsl-mc/dpmcp.c
> > create mode 100644 drivers/bus/fsl-mc/dprc-driver.c
> > create mode 100644 drivers/bus/fsl-mc/dprc.c
> > create mode 100644 drivers/bus/fsl-mc/fsl-mc-allocator.c
> > create mode 100644 drivers/bus/fsl-mc/fsl-mc-bus.c
> > create mode 100644 drivers/bus/fsl-mc/fsl-mc-msi.c
> > create mode 100644 drivers/bus/fsl-mc/fsl-mc-private.h
> > create mode 100644 drivers/bus/fsl-mc/mc-io.c
> > create mode 100644 drivers/bus/fsl-mc/mc-sys.c
> > delete mode 100644 drivers/staging/fsl-mc/TODO
> > delete mode 100644 drivers/staging/fsl-mc/bus/dpmcp.c
> > delete mode 100644 drivers/staging/fsl-mc/bus/dprc-driver.c
> > delete mode 100644 drivers/staging/fsl-mc/bus/dprc.c
> > delete mode 100644 drivers/staging/fsl-mc/bus/fsl-mc-allocator.c
> > delete mode 100644 drivers/staging/fsl-mc/bus/fsl-mc-bus.c
> > delete mode 100644 drivers/staging/fsl-mc/bus/fsl-mc-msi.c
> > delete mode 100644 drivers/staging/fsl-mc/bus/fsl-mc-private.h
> > delete mode 100644 drivers/staging/fsl-mc/bus/mc-io.c
> > delete mode 100644 drivers/staging/fsl-mc/bus/mc-sys.c
> > delete mode 100644 drivers/staging/fsl-mc/include/mc.h
> > delete mode 100644 drivers/staging/fsl-mc/overview.rst
> > create mode 100644 include/linux/fsl/mc.h
>
> I thought you were creating this with -M to git format-patch, what
> happened? That will show the files being renamed, not just deleted and
> added.
We previously received feedback suggesting to create the
patchset with file renaming detection disabled (comment added
in the notes).
Bogdan P.