This series add support for Renesas USB controllers uPD720201 and uPD720202.
These require firmware to be loaded and in case devices have ROM those can
also be programmed if empty. If ROM is programmed, it runs from ROM as well.
This includes patches from Christian which supported these controllers w/o
ROM and later my patches for ROM support and debugfs hook for rom erase and
export of xhci-pci functions.
Changes in v7:
Make a single module which removes issues with module loading
Keep the renesas code in renesas file
Add hc_driver as argument for usb_hcd_pci_probe and modify hdc drivers to
pass this and not use driver_data
Use driver data for fw name
Remove code to check if we need to load firmware or not
remove multiple fw version support, we can do that with symlink in
userspace
Changes in v6:
Move the renesas code into a seprate driver which invokes xhci-pci functions.
Changes in v5:
Added a debugfs rom erase patch, helps in debugging
Squashed patch 1 & 2 as requested by Mathias
Changes in v4:
Rollback the delay values as we got device failures
Changes in v3:
Dropped patch 2 as discussed with Christian
Removed aligned 8 bytes check
Change order for firware search from highest version to lowest
Added entry for new firmware for device 0x14 as well
Add tested by Christian
Changes in v2:
used macros for timeout count and delay
removed renesas_fw_alive_check
cleaned renesas_fw_callback
removed recurion for renesas_fw_download
added MODULE_FIRMWARE
added comment for multiple fw order
Christian Lamparter (1):
usb: renesas-xhci: Add the renesas xhci driver
Vinod Koul (4):
usb: hci: add hc_driver as argument for usb_hcd_pci_probe
usb: xhci: Add support for Renesas controller with memory
usb: renesas-xhci: Add ROM loader for uPD720201
usb: xhci: provide a debugfs hook for erasing rom
drivers/usb/core/hcd-pci.c | 7 +-
drivers/usb/host/Makefile | 3 +-
drivers/usb/host/ehci-pci.c | 6 +-
drivers/usb/host/ohci-pci.c | 9 +-
drivers/usb/host/uhci-pci.c | 8 +-
drivers/usb/host/xhci-pci-renesas.c | 809 ++++++++++++++++++++++++++++
drivers/usb/host/xhci-pci.c | 43 +-
drivers/usb/host/xhci-pci.h | 14 +
include/linux/usb/hcd.h | 3 +-
9 files changed, 878 insertions(+), 24 deletions(-)
create mode 100644 drivers/usb/host/xhci-pci-renesas.c
create mode 100644 drivers/usb/host/xhci-pci.h
--
2.25.1
usb_hcd_pci_probe expects users to call this with driver_data set as
hc_driver, that limits the possibility of using the driver_data for
driver data.
Add hc_driver as argument to usb_hcd_pci_probe and modify the callers
ehci/ohci/xhci/uhci to pass hc_driver as argument and freeup the
driver_data used
Tested xhci driver on Dragon-board RB3, compile tested ehci and ohci.
Couldn't compile uhci
Suggested-by: Mathias Nyman <[email protected]>
Signed-off-by: Vinod Koul <[email protected]>
---
drivers/usb/core/hcd-pci.c | 7 ++++---
drivers/usb/host/ehci-pci.c | 6 ++----
drivers/usb/host/ohci-pci.c | 9 ++++++---
drivers/usb/host/uhci-pci.c | 8 ++++++--
drivers/usb/host/xhci-pci.c | 14 +++++---------
include/linux/usb/hcd.h | 3 ++-
6 files changed, 25 insertions(+), 22 deletions(-)
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index f0a259937da8..b0a3400f836f 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -159,6 +159,7 @@ static void ehci_wait_for_companions(struct pci_dev *pdev, struct usb_hcd *hcd,
* usb_hcd_pci_probe - initialize PCI-based HCDs
* @dev: USB Host Controller being probed
* @id: pci hotplug id connecting controller to HCD framework
+ * @driver: USB HC driver handle
* Context: !in_interrupt()
*
* Allocates basic PCI resources for this USB host controller, and
@@ -169,9 +170,9 @@ static void ehci_wait_for_companions(struct pci_dev *pdev, struct usb_hcd *hcd,
*
* Return: 0 if successful.
*/
-int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
+int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id,
+ struct hc_driver *driver)
{
- struct hc_driver *driver;
struct usb_hcd *hcd;
int retval;
int hcd_irq = 0;
@@ -181,7 +182,7 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
if (!id)
return -EINVAL;
- driver = (struct hc_driver *)id->driver_data;
+
if (!driver)
return -EINVAL;
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index b0882c13a1d1..daaddfbbf797 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -360,23 +360,21 @@ static int ehci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
if (is_bypassed_id(pdev))
return -ENODEV;
- return usb_hcd_pci_probe(pdev, id);
+ return usb_hcd_pci_probe(pdev, id, &ehci_pci_hc_driver);
}
static void ehci_pci_remove(struct pci_dev *pdev)
{
pci_clear_mwi(pdev);
- usb_hcd_pci_remove(pdev);
+ usb_hcd_pci_remove(pdev);
}
/* PCI driver selection metadata; PCI hotplugging uses this */
static const struct pci_device_id pci_ids [] = { {
/* handle any USB 2.0 EHCI controller */
PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_EHCI, ~0),
- .driver_data = (unsigned long) &ehci_pci_hc_driver,
}, {
PCI_VDEVICE(STMICRO, PCI_DEVICE_ID_STMICRO_USB_HOST),
- .driver_data = (unsigned long) &ehci_pci_hc_driver,
},
{ /* end: all zeroes */ }
};
diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
index f4e13a3fddee..78b0d84c7675 100644
--- a/drivers/usb/host/ohci-pci.c
+++ b/drivers/usb/host/ohci-pci.c
@@ -277,21 +277,24 @@ static const struct ohci_driver_overrides pci_overrides __initconst = {
static const struct pci_device_id pci_ids[] = { {
/* handle any USB OHCI controller */
PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_OHCI, ~0),
- .driver_data = (unsigned long) &ohci_pci_hc_driver,
}, {
/* The device in the ConneXT I/O hub has no class reg */
PCI_VDEVICE(STMICRO, PCI_DEVICE_ID_STMICRO_USB_OHCI),
- .driver_data = (unsigned long) &ohci_pci_hc_driver,
}, { /* end: all zeroes */ }
};
MODULE_DEVICE_TABLE (pci, pci_ids);
+static int ohci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
+{
+ return usb_hcd_pci_probe(dev, id, &ohci_pci_hc_driver);
+}
+
/* pci driver glue; this is a "new style" PCI driver module */
static struct pci_driver ohci_pci_driver = {
.name = (char *) hcd_name,
.id_table = pci_ids,
- .probe = usb_hcd_pci_probe,
+ .probe = ohci_pci_probe,
.remove = usb_hcd_pci_remove,
.shutdown = usb_hcd_pci_shutdown,
diff --git a/drivers/usb/host/uhci-pci.c b/drivers/usb/host/uhci-pci.c
index 0fa3d72bae26..d59b9257c52b 100644
--- a/drivers/usb/host/uhci-pci.c
+++ b/drivers/usb/host/uhci-pci.c
@@ -287,17 +287,21 @@ static const struct hc_driver uhci_driver = {
static const struct pci_device_id uhci_pci_ids[] = { {
/* handle any USB UHCI controller */
PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_UHCI, ~0),
- .driver_data = (unsigned long) &uhci_driver,
}, { /* end: all zeroes */ }
};
MODULE_DEVICE_TABLE(pci, uhci_pci_ids);
+static int uhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
+{
+ return usb_hcd_pci_probe(dev, id, &uhci_driver);
+}
+
static struct pci_driver uhci_pci_driver = {
.name = (char *)hcd_name,
.id_table = uhci_pci_ids,
- .probe = usb_hcd_pci_probe,
+ .probe = uhci_pci_probe,
.remove = usb_hcd_pci_remove,
.shutdown = uhci_shutdown,
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 4917c5b033fa..a19752178216 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -316,11 +316,8 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
int retval;
struct xhci_hcd *xhci;
- struct hc_driver *driver;
struct usb_hcd *hcd;
- driver = (struct hc_driver *)id->driver_data;
-
/* Prevent runtime suspending between USB-2 and USB-3 initialization */
pm_runtime_get_noresume(&dev->dev);
@@ -330,7 +327,7 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
* to say USB 2.0, but I'm not sure what the implications would be in
* the other parts of the HCD code.
*/
- retval = usb_hcd_pci_probe(dev, id);
+ retval = usb_hcd_pci_probe(dev, id, &xhci_pci_hc_driver);
if (retval)
goto put_runtime_pm;
@@ -338,8 +335,8 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
/* USB 2.0 roothub is stored in the PCI device now. */
hcd = dev_get_drvdata(&dev->dev);
xhci = hcd_to_xhci(hcd);
- xhci->shared_hcd = usb_create_shared_hcd(driver, &dev->dev,
- pci_name(dev), hcd);
+ xhci->shared_hcd = usb_create_shared_hcd(&xhci_pci_hc_driver, &dev->dev,
+ pci_name(dev), hcd);
if (!xhci->shared_hcd) {
retval = -ENOMEM;
goto dealloc_usb2_hcd;
@@ -536,10 +533,9 @@ static void xhci_pci_shutdown(struct usb_hcd *hcd)
/*-------------------------------------------------------------------------*/
/* PCI driver selection metadata; PCI hotplugging uses this */
-static const struct pci_device_id pci_ids[] = { {
+static const struct pci_device_id pci_ids[] = {
/* handle any USB 3.0 xHCI controller */
- PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0),
- .driver_data = (unsigned long) &xhci_pci_hc_driver,
+ { PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0),
},
{ /* end: all zeroes */ }
};
diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
index 712b2a603645..7823a06f6692 100644
--- a/include/linux/usb/hcd.h
+++ b/include/linux/usb/hcd.h
@@ -479,7 +479,8 @@ extern void usb_hcd_platform_shutdown(struct platform_device *dev);
struct pci_dev;
struct pci_device_id;
extern int usb_hcd_pci_probe(struct pci_dev *dev,
- const struct pci_device_id *id);
+ const struct pci_device_id *id,
+ struct hc_driver *driver);
extern void usb_hcd_pci_remove(struct pci_dev *dev);
extern void usb_hcd_pci_shutdown(struct pci_dev *dev);
--
2.25.1
From: Christian Lamparter <[email protected]>
This add a new driver for renesas xhci which is basically a firmware
loader for uPD720201 and uPD720202 w/o ROM. It uses xhci-pci driver for
most of the work.
This is added in Makefile before the xhci-pci driver so that it first
get probed for renesas devices before the xhci-pci driver has a chance
to claim any device.
This patch adds a firmware loader for the uPD720201K8-711-BAC-A
and uPD720202K8-711-BAA-A variant. Both of these chips are listed
in Renesas' R19UH0078EJ0500 Rev.5.00 "User's Manual: Hardware" as
devices which need the firmware loader on page 2 in order to
work as they "do not support the External ROM".
The "Firmware Download Sequence" is describe in chapter
"7.1 FW Download Interface" R19UH0078EJ0500 Rev.5.00 page 131.
The firmware "K2013080.mem" is available from a USB3.0 Host to
PCIe Adapter (PP2U-E card) "Firmware download" archive. An
alternative version can be sourced from Netgear's WNDR4700 GPL
archives.
The release notes of the PP2U-E's "Firmware Download" ver 2.0.1.3
(2012-06-15) state that the firmware is for the following devices:
- uPD720201 ES 2.0 sample whose revision ID is 2.
- uPD720201 ES 2.1 sample & CS sample & Mass product, ID is 3.
- uPD720202 ES 2.0 sample & CS sample & Mass product, ID is 2.
Cc: Yoshihiro Shimoda <[email protected]>
Signed-off-by: Christian Lamparter <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
[vkoul: fixed comments:
used macros for timeout count and delay
removed renesas_fw_alive_check
cleaned renesas_fw_callback
removed recursion for renesas_fw_download
add register defines and field names
move to a separate file]
Signed-off-by: Vinod Koul <[email protected]>
---
drivers/usb/host/Makefile | 3 +-
drivers/usb/host/xhci-pci-renesas.c | 438 ++++++++++++++++++++++++++++
drivers/usb/host/xhci-pci.h | 11 +
3 files changed, 451 insertions(+), 1 deletion(-)
create mode 100644 drivers/usb/host/xhci-pci-renesas.c
create mode 100644 drivers/usb/host/xhci-pci.h
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index b191361257cc..c3a79f626393 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -70,7 +70,8 @@ obj-$(CONFIG_USB_OHCI_HCD_DAVINCI) += ohci-da8xx.o
obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o
obj-$(CONFIG_USB_FHCI_HCD) += fhci.o
obj-$(CONFIG_USB_XHCI_HCD) += xhci-hcd.o
-obj-$(CONFIG_USB_XHCI_PCI) += xhci-pci.o
+usb-xhci-pci-objs := xhci-pci.o xhci-pci-renesas.o
+obj-$(CONFIG_USB_XHCI_PCI) += usb-xhci-pci.o
obj-$(CONFIG_USB_XHCI_PLATFORM) += xhci-plat-hcd.o
obj-$(CONFIG_USB_XHCI_HISTB) += xhci-histb.o
obj-$(CONFIG_USB_XHCI_MTK) += xhci-mtk.o
diff --git a/drivers/usb/host/xhci-pci-renesas.c b/drivers/usb/host/xhci-pci-renesas.c
new file mode 100644
index 000000000000..59b44c1dd543
--- /dev/null
+++ b/drivers/usb/host/xhci-pci-renesas.c
@@ -0,0 +1,438 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2019-2020 Linaro Limited */
+
+#include <linux/acpi.h>
+#include <linux/firmware.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/unaligned/access_ok.h>
+
+#include "xhci.h"
+#include "xhci-trace.h"
+#include "xhci-pci.h"
+
+#define RENESAS_FW_VERSION 0x6C
+#define RENESAS_ROM_CONFIG 0xF0
+#define RENESAS_FW_STATUS 0xF4
+#define RENESAS_FW_STATUS_MSB 0xF5
+#define RENESAS_ROM_STATUS 0xF6
+#define RENESAS_ROM_STATUS_MSB 0xF7
+#define RENESAS_DATA0 0xF8
+#define RENESAS_DATA1 0xFC
+
+#define RENESAS_FW_VERSION_FIELD GENMASK(23, 7)
+#define RENESAS_FW_VERSION_OFFSET 8
+
+#define RENESAS_FW_STATUS_DOWNLOAD_ENABLE BIT(0)
+#define RENESAS_FW_STATUS_LOCK BIT(1)
+#define RENESAS_FW_STATUS_RESULT GENMASK(6, 4)
+ #define RENESAS_FW_STATUS_INVALID 0
+ #define RENESAS_FW_STATUS_SUCCESS BIT(4)
+ #define RENESAS_FW_STATUS_ERROR BIT(5)
+#define RENESAS_FW_STATUS_SET_DATA0 BIT(8)
+#define RENESAS_FW_STATUS_SET_DATA1 BIT(9)
+
+#define RENESAS_ROM_STATUS_ACCESS BIT(0)
+#define RENESAS_ROM_STATUS_ERASE BIT(1)
+#define RENESAS_ROM_STATUS_RELOAD BIT(2)
+#define RENESAS_ROM_STATUS_RESULT GENMASK(6, 4)
+ #define RENESAS_ROM_STATUS_NO_RESULT 0
+ #define RENESAS_ROM_STATUS_SUCCESS BIT(4)
+ #define RENESAS_ROM_STATUS_ERROR BIT(5)
+#define RENESAS_ROM_STATUS_SET_DATA0 BIT(8)
+#define RENESAS_ROM_STATUS_SET_DATA1 BIT(9)
+#define RENESAS_ROM_STATUS_ROM_EXISTS BIT(15)
+
+#define RENESAS_ROM_ERASE_MAGIC 0x5A65726F
+#define RENESAS_ROM_WRITE_MAGIC 0x53524F4D
+
+#define RENESAS_RETRY 10000
+#define RENESAS_DELAY 10
+
+static int renesas_fw_download_image(struct pci_dev *dev,
+ const u32 *fw,
+ size_t step)
+{
+ size_t i;
+ int err;
+ u8 fw_status;
+ bool data0_or_data1;
+
+ /*
+ * The hardware does alternate between two 32-bit pages.
+ * (This is because each row of the firmware is 8 bytes).
+ *
+ * for even steps we use DATA0, for odd steps DATA1.
+ */
+ data0_or_data1 = (step & 1) == 1;
+
+ /* step+1. Read "Set DATAX" and confirm it is cleared. */
+ for (i = 0; i < RENESAS_RETRY; i++) {
+ err = pci_read_config_byte(dev, RENESAS_FW_STATUS_MSB,
+ &fw_status);
+ if (err)
+ return pcibios_err_to_errno(err);
+ if (!(fw_status & BIT(data0_or_data1)))
+ break;
+
+ udelay(RENESAS_DELAY);
+ }
+ if (i == RENESAS_RETRY) {
+ dev_err(&dev->dev, "FW Load timedout");
+ return -ETIMEDOUT;
+ }
+
+ /*
+ * step+2. Write FW data to "DATAX".
+ * "LSB is left" => force little endian
+ */
+ err = pci_write_config_dword(dev, data0_or_data1 ?
+ RENESAS_DATA1 : RENESAS_DATA0,
+ (__force u32)cpu_to_le32(fw[step]));
+ if (err)
+ return pcibios_err_to_errno(err);
+
+ udelay(100);
+
+ /* step+3. Set "Set DATAX". */
+ err = pci_write_config_byte(dev, RENESAS_FW_STATUS_MSB,
+ BIT(data0_or_data1));
+ if (err)
+ return pcibios_err_to_errno(err);
+
+ return 0;
+}
+
+static int renesas_fw_verify(struct pci_dev *dev,
+ const void *fw_data,
+ size_t length)
+{
+ u16 fw_version_pointer;
+ u16 fw_version;
+
+ /*
+ * The Firmware's Data Format is describe in
+ * "6.3 Data Format" R19UH0078EJ0500 Rev.5.00 page 124
+ */
+
+ /*
+ * The bootrom chips of the big brother have sizes up to 64k, let's
+ * assume that's the biggest the firmware can get.
+ */
+ if (length < 0x1000 || length >= 0x10000) {
+ dev_err(&dev->dev, "firmware is size %zd is not (4k - 64k).",
+ length);
+ return -EINVAL;
+ }
+
+ /* The First 2 bytes are fixed value (55aa). "LSB on Left" */
+ if (get_unaligned_le16(fw_data) != 0x55aa) {
+ dev_err(&dev->dev, "no valid firmware header found.");
+ return -EINVAL;
+ }
+
+ /* verify the firmware version position and print it. */
+ fw_version_pointer = get_unaligned_le16(fw_data + 4);
+ if (fw_version_pointer + 2 >= length) {
+ dev_err(&dev->dev,
+ "firmware version pointer is outside of the firmware image.");
+ return -EINVAL;
+ }
+
+ fw_version = get_unaligned_le16(fw_data + fw_version_pointer);
+ dev_dbg(&dev->dev, "got firmware version: %02x.", fw_version);
+
+ return 0;
+}
+
+static int renesas_fw_check_running(struct pci_dev *pdev)
+{
+ int err;
+ u8 fw_state;
+
+ /*
+ * Test if the device is actually needing the firmware. As most
+ * BIOSes will initialize the device for us. If the device is
+ * initialized.
+ */
+ err = pci_read_config_byte(pdev, RENESAS_FW_STATUS, &fw_state);
+ if (err)
+ return pcibios_err_to_errno(err);
+
+ /*
+ * Check if "FW Download Lock" is locked. If it is and the FW is
+ * ready we can simply continue. If the FW is not ready, we have
+ * to give up.
+ */
+ if (fw_state & RENESAS_FW_STATUS_LOCK) {
+ dev_dbg(&pdev->dev, "FW Download Lock is engaged.");
+
+ if (fw_state & RENESAS_FW_STATUS_SUCCESS)
+ return 0;
+
+ dev_err(&pdev->dev,
+ "FW Download Lock is set and FW is not ready. Giving Up.");
+ return -EIO;
+ }
+
+ /*
+ * Check if "FW Download Enable" is set. If someone (us?) tampered
+ * with it and it can't be resetted, we have to give up too... and
+ * ask for a forgiveness and a reboot.
+ */
+ if (fw_state & RENESAS_FW_STATUS_DOWNLOAD_ENABLE) {
+ dev_err(&pdev->dev,
+ "FW Download Enable is stale. Giving Up (poweroff/reboot needed).");
+ return -EIO;
+ }
+
+ /* Otherwise, Check the "Result Code" Bits (6:4) and act accordingly */
+ switch (fw_state & RENESAS_FW_STATUS_RESULT) {
+ case 0: /* No result yet */
+ dev_dbg(&pdev->dev, "FW is not ready/loaded yet.");
+
+ /* tell the caller, that this device needs the firmware. */
+ return 1;
+
+ case RENESAS_FW_STATUS_SUCCESS: /* Success, device should be working. */
+ dev_dbg(&pdev->dev, "FW is ready.");
+ return 0;
+
+ case RENESAS_FW_STATUS_ERROR: /* Error State */
+ dev_err(&pdev->dev,
+ "hardware is in an error state. Giving up (poweroff/reboot needed).");
+ return -ENODEV;
+
+ default: /* All other states are marked as "Reserved states" */
+ dev_err(&pdev->dev,
+ "hardware is in an invalid state %lx. Giving up (poweroff/reboot needed).",
+ (fw_state & RENESAS_FW_STATUS_RESULT) >> 4);
+ return -EINVAL;
+ }
+}
+
+static int renesas_fw_download(struct pci_dev *pdev,
+ const struct firmware *fw)
+{
+ const u32 *fw_data = (const u32 *)fw->data;
+ size_t i;
+ int err;
+ u8 fw_status;
+
+ /*
+ * For more information and the big picture: please look at the
+ * "Firmware Download Sequence" in "7.1 FW Download Interface"
+ * of R19UH0078EJ0500 Rev.5.00 page 131
+ */
+
+ /*
+ * 0. Set "FW Download Enable" bit in the
+ * "FW Download Control & Status Register" at 0xF4
+ */
+ err = pci_write_config_byte(pdev, RENESAS_FW_STATUS,
+ RENESAS_FW_STATUS_DOWNLOAD_ENABLE);
+ if (err)
+ return pcibios_err_to_errno(err);
+
+ /* 1 - 10 follow one step after the other. */
+ for (i = 0; i < fw->size / 4; i++) {
+ err = renesas_fw_download_image(pdev, fw_data, i);
+ if (err) {
+ dev_err(&pdev->dev,
+ "Firmware Download Step %zd failed at position %zd bytes with (%d).",
+ i, i * 4, err);
+ return err;
+ }
+ }
+
+ /*
+ * This sequence continues until the last data is written to
+ * "DATA0" or "DATA1". Naturally, we wait until "SET DATA0/1"
+ * is cleared by the hardware beforehand.
+ */
+ for (i = 0; i < RENESAS_RETRY; i++) {
+ err = pci_read_config_byte(pdev, RENESAS_FW_STATUS_MSB,
+ &fw_status);
+ if (err)
+ return pcibios_err_to_errno(err);
+ if (!(fw_status & (BIT(0) | BIT(1))))
+ break;
+
+ udelay(RENESAS_DELAY);
+ }
+ if (i == RENESAS_RETRY)
+ dev_warn(&pdev->dev, "Final Firmware Download step timed out.");
+
+ /*
+ * 11. After finishing writing the last data of FW, the
+ * System Software must clear "FW Download Enable"
+ */
+ err = pci_write_config_byte(pdev, RENESAS_FW_STATUS, 0);
+ if (err)
+ return pcibios_err_to_errno(err);
+
+ /* 12. Read "Result Code" and confirm it is good. */
+ for (i = 0; i < RENESAS_RETRY; i++) {
+ err = pci_read_config_byte(pdev, RENESAS_FW_STATUS, &fw_status);
+ if (err)
+ return pcibios_err_to_errno(err);
+ if (fw_status & RENESAS_FW_STATUS_SUCCESS)
+ break;
+
+ udelay(RENESAS_DELAY);
+ }
+ if (i == RENESAS_RETRY) {
+ /* Timed out / Error - let's see if we can fix this */
+ err = renesas_fw_check_running(pdev);
+ switch (err) {
+ case 0: /*
+ * we shouldn't end up here.
+ * maybe it took a little bit longer.
+ * But all should be well?
+ */
+ break;
+
+ case 1: /* (No result yet! */
+ dev_err(&pdev->dev, "FW Load timedout");
+ return -ETIMEDOUT;
+
+ default:
+ return err;
+ }
+ }
+ /*
+ * Optional last step: Engage Firmware Lock
+ *
+ * err = pci_write_config_byte(pdev, 0xF4, BIT(2));
+ * if (err)
+ * return pcibios_err_to_errno(err);
+ */
+
+ return 0;
+}
+
+struct renesas_fw_ctx {
+ struct pci_dev *pdev;
+ const struct pci_device_id *id;
+ bool resume;
+ const struct renesas_fw_entry *entry;
+};
+
+static void renesas_fw_callback(const struct firmware *fw,
+ void *context)
+{
+ struct renesas_fw_ctx *ctx = context;
+ struct pci_dev *pdev = ctx->pdev;
+ struct device *parent = pdev->dev.parent;
+ int err;
+
+ if (!fw) {
+ dev_err(&pdev->dev, "firmware failed to load\n");
+ goto cleanup;
+ }
+
+ err = renesas_fw_verify(pdev, fw->data, fw->size);
+ if (err)
+ goto cleanup;
+
+ err = renesas_fw_download(pdev, fw);
+ release_firmware(fw);
+ if (err) {
+ dev_err(&pdev->dev, "firmware failed to download (%d).", err);
+ goto cleanup;
+ }
+
+ return;
+
+cleanup:
+ /* in case of an error - fall through */
+ dev_info(&pdev->dev, "Unloading driver");
+
+ if (parent)
+ device_lock(parent);
+
+ device_release_driver(&pdev->dev);
+
+ if (parent)
+ device_unlock(parent);
+
+ pci_dev_put(pdev);
+}
+
+static int renesas_fw_download_to_hw(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ struct renesas_fw_ctx *ctx;
+ char *fw_name = (char *)id->driver_data;
+ int err;
+
+ err = renesas_fw_check_running(pdev);
+ /* Continue ahead, if the firmware is already running. */
+ if (err == 0)
+ return 0;
+
+ if (err != 1)
+ return err;
+
+ ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+ ctx->pdev = pdev;
+ ctx->id = id;
+
+ pci_dev_get(pdev);
+ err = request_firmware_nowait(THIS_MODULE, 1, fw_name,
+ &pdev->dev, GFP_KERNEL,
+ ctx, renesas_fw_callback);
+ if (err) {
+ dev_err(&pdev->dev, "request_firmware failed: %d\n", err);
+ pci_dev_put(pdev);
+ return err;
+ }
+
+ /*
+ * The renesas_fw_callback() callback will continue the probe
+ * process, once it aquires the firmware.
+ */
+ return 1;
+}
+
+int renesas_xhci_pci_probe(struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ int retval;
+
+ /*
+ * Check if this device is a RENESAS uPD720201/2 device.
+ * Otherwise, we can continue with xhci_pci_probe as usual.
+ */
+ retval = renesas_fw_download_to_hw(dev, id);
+ switch (retval) {
+ case 0:
+ break;
+
+ case 1: /* let it load the firmware and recontinue the probe. */
+ retval = 1;
+ break;
+
+ default:
+ break;
+ };
+
+ return retval;
+}
+
+int renesas_xhci_pci_remove(struct pci_dev *dev)
+{
+ if (renesas_fw_check_running(dev)) {
+ /*
+ * bail out early, if this was a renesas device w/o FW.
+ * Else we might hit the NMI watchdog in xhci_handsake
+ * during xhci_reset as part of the driver's unloading.
+ * which we forced in the renesas_fw_callback().
+ */
+ return -EIO;
+ }
+ return 0;
+}
diff --git a/drivers/usb/host/xhci-pci.h b/drivers/usb/host/xhci-pci.h
new file mode 100644
index 000000000000..4d6aa250b9be
--- /dev/null
+++ b/drivers/usb/host/xhci-pci.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2019-2020 Linaro Limted */
+
+#ifndef XHCI_PCI_H
+#define XHCI_PCI_H
+
+int renesas_xhci_pci_probe(struct pci_dev *dev,
+ const struct pci_device_id *id);
+int renesas_xhci_pci_remove(struct pci_dev *dev);
+#endif
+
--
2.25.1
Some rensas controller like uPD720201 and uPD720202 need firmware to be
loaded. Add these devices in table and invoke renesas firmware loader
functions to check and load the firmware into device memory when
required.
Signed-off-by: Vinod Koul <[email protected]>
---
drivers/usb/host/xhci-pci-renesas.c | 1 +
drivers/usb/host/xhci-pci.c | 29 ++++++++++++++++++++++++++++-
drivers/usb/host/xhci-pci.h | 3 +++
3 files changed, 32 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/host/xhci-pci-renesas.c b/drivers/usb/host/xhci-pci-renesas.c
index 59b44c1dd543..ce17778b80db 100644
--- a/drivers/usb/host/xhci-pci-renesas.c
+++ b/drivers/usb/host/xhci-pci-renesas.c
@@ -343,6 +343,7 @@ static void renesas_fw_callback(const struct firmware *fw,
goto cleanup;
}
+ xhci_pci_probe(pdev, ctx->id);
return;
cleanup:
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index a19752178216..7e63658542ac 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -15,6 +15,7 @@
#include "xhci.h"
#include "xhci-trace.h"
+#include "xhci-pci.h"
#define SSIC_PORT_NUM 2
#define SSIC_PORT_CFG2 0x880c
@@ -312,11 +313,25 @@ static int xhci_pci_setup(struct usb_hcd *hcd)
* We need to register our own PCI probe function (instead of the USB core's
* function) in order to create a second roothub under xHCI.
*/
-static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
+int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
int retval;
struct xhci_hcd *xhci;
struct usb_hcd *hcd;
+ char *renesas_fw;
+
+ renesas_fw = (char *)id->driver_data;
+ if (renesas_fw) {
+ retval = renesas_xhci_pci_probe(dev, id);
+ switch (retval) {
+ case 0: /* fw check success, continue */
+ break;
+ case 1: /* fw will be loaded by async load */
+ return 0;
+ default: /* error */
+ return retval;
+ }
+ }
/* Prevent runtime suspending between USB-2 and USB-3 initialization */
pm_runtime_get_noresume(&dev->dev);
@@ -379,6 +394,11 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
static void xhci_pci_remove(struct pci_dev *dev)
{
struct xhci_hcd *xhci;
+ int err;
+
+ err = renesas_xhci_pci_remove(dev);
+ if (err)
+ return;
xhci = hcd_to_xhci(pci_get_drvdata(dev));
xhci->xhc_state |= XHCI_STATE_REMOVING;
@@ -534,12 +554,19 @@ static void xhci_pci_shutdown(struct usb_hcd *hcd)
/* PCI driver selection metadata; PCI hotplugging uses this */
static const struct pci_device_id pci_ids[] = {
+ { PCI_DEVICE(0x1912, 0x0014),
+ .driver_data = (unsigned long)"renesas_usb_fw.mem",
+ },
+ { PCI_DEVICE(0x1912, 0x0015),
+ .driver_data = (unsigned long)"renesas_usb_fw.mem",
+ },
/* handle any USB 3.0 xHCI controller */
{ PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0),
},
{ /* end: all zeroes */ }
};
MODULE_DEVICE_TABLE(pci, pci_ids);
+MODULE_FIRMWARE("renesas_usb_fw.mem");
/* pci driver glue; this is a "new style" PCI driver module */
static struct pci_driver xhci_pci_driver = {
diff --git a/drivers/usb/host/xhci-pci.h b/drivers/usb/host/xhci-pci.h
index 4d6aa250b9be..873a03bd102e 100644
--- a/drivers/usb/host/xhci-pci.h
+++ b/drivers/usb/host/xhci-pci.h
@@ -7,5 +7,8 @@
int renesas_xhci_pci_probe(struct pci_dev *dev,
const struct pci_device_id *id);
int renesas_xhci_pci_remove(struct pci_dev *dev);
+
+int xhci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id);
+
#endif
--
2.25.1
uPD720201 supports ROM and allows software to program the ROM and boot
from it. Add support for detecting if ROM is present, if so load the ROM
if not programmed earlier.
Signed-off-by: Vinod Koul <[email protected]>
Cc: Yoshihiro Shimoda <[email protected]>
Cc: Christian Lamparter <[email protected]>
---
drivers/usb/host/xhci-pci-renesas.c | 341 +++++++++++++++++++++++++++-
1 file changed, 338 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/host/xhci-pci-renesas.c b/drivers/usb/host/xhci-pci-renesas.c
index ce17778b80db..d43b3a76dff5 100644
--- a/drivers/usb/host/xhci-pci-renesas.c
+++ b/drivers/usb/host/xhci-pci-renesas.c
@@ -50,6 +50,22 @@
#define RENESAS_RETRY 10000
#define RENESAS_DELAY 10
+#define ROM_VALID_01 0x2013
+#define ROM_VALID_02 0x2026
+
+static int renesas_verify_fw_version(struct pci_dev *pdev, u32 version)
+{
+ switch (version) {
+ case ROM_VALID_01:
+ case ROM_VALID_02:
+ return 0;
+ default:
+ dev_err(&pdev->dev, "FW has invalid version :%d\n", version);
+ return 1;
+ }
+ return -EINVAL;
+}
+
static int renesas_fw_download_image(struct pci_dev *dev,
const u32 *fw,
size_t step)
@@ -146,10 +162,62 @@ static int renesas_fw_verify(struct pci_dev *dev,
return 0;
}
-static int renesas_fw_check_running(struct pci_dev *pdev)
+static int renesas_check_rom_state(struct pci_dev *pdev)
{
+ u16 rom_state;
+ u32 version;
int err;
+
+ /* check FW version */
+ err = pci_read_config_dword(pdev, RENESAS_FW_VERSION, &version);
+ if (err)
+ return pcibios_err_to_errno(err);
+
+ version &= RENESAS_FW_VERSION_FIELD;
+ version = version >> RENESAS_FW_VERSION_OFFSET;
+
+ err = renesas_verify_fw_version(pdev, version);
+ if (err)
+ return err;
+
+ /*
+ * Test if ROM is present and loaded, if so we can skip everything
+ */
+ err = pci_read_config_word(pdev, RENESAS_ROM_STATUS, &rom_state);
+ if (err)
+ return pcibios_err_to_errno(err);
+
+ if (rom_state & BIT(15)) {
+ /* ROM exists */
+ dev_dbg(&pdev->dev, "ROM exists\n");
+
+ /* Check the "Result Code" Bits (6:4) and act accordingly */
+ switch (rom_state & RENESAS_ROM_STATUS_RESULT) {
+ case RENESAS_ROM_STATUS_SUCCESS:
+ return 0;
+
+ case RENESAS_ROM_STATUS_NO_RESULT: /* No result yet */
+ return 0;
+
+ case RENESAS_ROM_STATUS_ERROR: /* Error State */
+ default: /* All other states are marked as "Reserved states" */
+ dev_err(&pdev->dev, "Invalid ROM..");
+ break;
+ }
+ }
+
+ return -EIO;
+}
+
+static int renesas_fw_check_running(struct pci_dev *pdev)
+{
u8 fw_state;
+ int err;
+
+ /* Check if device has ROM and loaded, if so skip everything */
+ err = renesas_check_rom_state(pdev);
+ if (!err)
+ return err;
/*
* Test if the device is actually needing the firmware. As most
@@ -315,16 +383,263 @@ static int renesas_fw_download(struct pci_dev *pdev,
struct renesas_fw_ctx {
struct pci_dev *pdev;
const struct pci_device_id *id;
- bool resume;
- const struct renesas_fw_entry *entry;
};
+static bool renesas_check_rom(struct pci_dev *pdev)
+{
+ u16 rom_status;
+ int retval;
+
+ /* 1. Check if external ROM exists */
+ retval = pci_read_config_word(pdev, RENESAS_ROM_STATUS, &rom_status);
+ if (retval)
+ return false;
+
+ rom_status &= RENESAS_ROM_STATUS_ROM_EXISTS;
+ if (rom_status) {
+ dev_dbg(&pdev->dev, "External ROM exists\n");
+ return true; /* External ROM exists */
+ }
+
+ return false;
+}
+
+static void renesas_rom_erase(struct pci_dev *pdev)
+{
+ int retval, i;
+ u8 status;
+
+ dev_dbg(&pdev->dev, "Performing ROM Erase...\n");
+ retval = pci_write_config_dword(pdev, RENESAS_DATA0,
+ RENESAS_ROM_ERASE_MAGIC);
+ if (retval) {
+ dev_err(&pdev->dev, "ROM erase, magic word write failed: %d\n",
+ pcibios_err_to_errno(retval));
+ return;
+ }
+
+ retval = pci_read_config_byte(pdev, RENESAS_ROM_STATUS, &status);
+ if (retval) {
+ dev_err(&pdev->dev, "ROM status read failed: %d\n",
+ pcibios_err_to_errno(retval));
+ return;
+ }
+ status |= RENESAS_ROM_STATUS_ERASE;
+ retval = pci_write_config_byte(pdev, RENESAS_ROM_STATUS, status);
+ if (retval) {
+ dev_err(&pdev->dev, "ROM erase set word write failed\n");
+ return;
+ }
+
+ /* sleep a bit while ROM is erased */
+ msleep(20);
+
+ for (i = 0; i < RENESAS_RETRY; i++) {
+ retval = pci_read_config_byte(pdev, RENESAS_ROM_STATUS,
+ &status);
+ status &= RENESAS_ROM_STATUS_ERASE;
+ if (!status)
+ break;
+
+ mdelay(RENESAS_DELAY);
+ }
+
+ if (i == RENESAS_RETRY)
+ dev_dbg(&pdev->dev, "Chip erase timedout: %x\n", status);
+
+ dev_dbg(&pdev->dev, "ROM Erase... Done success\n");
+}
+
+static bool renesas_download_rom(struct pci_dev *pdev,
+ const u32 *fw, size_t step)
+{
+ bool data0_or_data1;
+ u8 fw_status;
+ size_t i;
+ int err;
+
+ /*
+ * The hardware does alternate between two 32-bit pages.
+ * (This is because each row of the firmware is 8 bytes).
+ *
+ * for even steps we use DATA0, for odd steps DATA1.
+ */
+ data0_or_data1 = (step & 1) == 1;
+
+ /* Read "Set DATAX" and confirm it is cleared. */
+ for (i = 0; i < RENESAS_RETRY; i++) {
+ err = pci_read_config_byte(pdev, RENESAS_ROM_STATUS_MSB,
+ &fw_status);
+ if (err) {
+ dev_err(&pdev->dev, "Read ROM Status failed: %d\n",
+ pcibios_err_to_errno(err));
+ return false;
+ }
+ if (!(fw_status & BIT(data0_or_data1)))
+ break;
+
+ udelay(RENESAS_DELAY);
+ }
+ if (i == RENESAS_RETRY) {
+ dev_err(&pdev->dev, "Timeout for Set DATAX step: %zd\n", step);
+ return false;
+ }
+
+ /*
+ * Write FW data to "DATAX".
+ * "LSB is left" => force little endian
+ */
+ err = pci_write_config_dword(pdev, data0_or_data1 ?
+ RENESAS_DATA1 : RENESAS_DATA0,
+ (__force u32)cpu_to_le32(fw[step]));
+ if (err) {
+ dev_err(&pdev->dev, "Write to DATAX failed: %d\n",
+ pcibios_err_to_errno(err));
+ return false;
+ }
+
+ udelay(100);
+
+ /* Set "Set DATAX". */
+ err = pci_write_config_byte(pdev, RENESAS_ROM_STATUS_MSB,
+ BIT(data0_or_data1));
+ if (err) {
+ dev_err(&pdev->dev, "Write config for DATAX failed: %d\n",
+ pcibios_err_to_errno(err));
+ return false;
+ }
+
+ return true;
+}
+
+static bool renesas_setup_rom(struct pci_dev *pdev, const struct firmware *fw)
+{
+ const u32 *fw_data = (const u32 *)fw->data;
+ int err, i;
+ u8 status;
+
+ /* 2. Write magic word to Data0 */
+ err = pci_write_config_dword(pdev, RENESAS_DATA0,
+ RENESAS_ROM_WRITE_MAGIC);
+ if (err)
+ return false;
+
+ /* 3. Set External ROM access */
+ err = pci_write_config_byte(pdev, RENESAS_ROM_STATUS,
+ RENESAS_ROM_STATUS_ACCESS);
+ if (err)
+ goto remove_bypass;
+
+ /* 4. Check the result */
+ err = pci_read_config_byte(pdev, RENESAS_ROM_STATUS, &status);
+ if (err)
+ goto remove_bypass;
+ status &= GENMASK(6, 4);
+ if (status) {
+ dev_err(&pdev->dev,
+ "setting external rom failed: %x\n", status);
+ goto remove_bypass;
+ }
+
+ /* 5 to 16 Write FW to DATA0/1 while checking SetData0/1 */
+ for (i = 0; i < fw->size / 4; i++) {
+ err = renesas_download_rom(pdev, fw_data, i);
+ if (!err) {
+ dev_err(&pdev->dev,
+ "ROM Download Step %d failed at position %d bytes\n",
+ i, i * 4);
+ goto remove_bypass;
+ }
+ }
+
+ /*
+ * wait till DATA0/1 is cleared
+ */
+ for (i = 0; i < RENESAS_RETRY; i++) {
+ err = pci_read_config_byte(pdev, RENESAS_ROM_STATUS_MSB,
+ &status);
+ if (err)
+ goto remove_bypass;
+ if (!(status & (BIT(0) | BIT(1))))
+ break;
+
+ udelay(RENESAS_DELAY);
+ }
+ if (i == RENESAS_RETRY) {
+ dev_err(&pdev->dev, "Final Firmware ROM Download step timed out\n");
+ goto remove_bypass;
+ }
+
+ /* 17. Remove bypass */
+ err = pci_write_config_byte(pdev, RENESAS_ROM_STATUS, 0);
+ if (err)
+ return false;
+
+ udelay(10);
+
+ /* 18. check result */
+ for (i = 0; i < RENESAS_RETRY; i++) {
+ err = pci_read_config_byte(pdev, RENESAS_ROM_STATUS, &status);
+ if (err) {
+ dev_err(&pdev->dev, "Read ROM status failed:%d\n",
+ pcibios_err_to_errno(err));
+ return false;
+ }
+ status &= RENESAS_ROM_STATUS_RESULT;
+ if (status == RENESAS_ROM_STATUS_SUCCESS) {
+ dev_dbg(&pdev->dev, "Download ROM success\n");
+ break;
+ }
+ udelay(RENESAS_DELAY);
+ }
+ if (i == RENESAS_RETRY) { /* Timed out */
+ dev_err(&pdev->dev,
+ "Download to external ROM TO: %x\n", status);
+ return false;
+ }
+
+ dev_dbg(&pdev->dev, "Download to external ROM scuceeded\n");
+
+ /* Last step set Reload */
+ err = pci_write_config_byte(pdev, RENESAS_ROM_STATUS,
+ RENESAS_ROM_STATUS_RELOAD);
+ if (err) {
+ dev_err(&pdev->dev, "Set ROM execute failed: %d\n",
+ pcibios_err_to_errno(err));
+ return false;
+ }
+
+ /*
+ * wait till Reload is cleared
+ */
+ for (i = 0; i < RENESAS_RETRY; i++) {
+ err = pci_read_config_byte(pdev, RENESAS_ROM_STATUS, &status);
+ if (err)
+ return false;
+ if (!(status & RENESAS_ROM_STATUS_RELOAD))
+ break;
+
+ udelay(RENESAS_DELAY);
+ }
+ if (i == RENESAS_RETRY) {
+ dev_err(&pdev->dev, "ROM Exec timed out: %x\n", status);
+ return false;
+ }
+
+ return true;
+
+remove_bypass:
+ pci_write_config_byte(pdev, RENESAS_ROM_STATUS, 0);
+ return false;
+}
+
static void renesas_fw_callback(const struct firmware *fw,
void *context)
{
struct renesas_fw_ctx *ctx = context;
struct pci_dev *pdev = ctx->pdev;
struct device *parent = pdev->dev.parent;
+ bool rom;
int err;
if (!fw) {
@@ -336,6 +651,25 @@ static void renesas_fw_callback(const struct firmware *fw,
if (err)
goto cleanup;
+ /* Check if the device has external ROM */
+ rom = renesas_check_rom(pdev);
+ if (rom) {
+ /* perfrom chip erase first */
+ renesas_rom_erase(pdev);
+
+ /* lets try loading fw on ROM first */
+ rom = renesas_setup_rom(pdev, fw);
+ if (!rom) {
+ dev_err(&pdev->dev,
+ "ROM load failed, falling back on FW load\n");
+ } else {
+ dev_err(&pdev->dev,
+ "ROM load success\n");
+ release_firmware(fw);
+ goto do_probe;
+ }
+ }
+
err = renesas_fw_download(pdev, fw);
release_firmware(fw);
if (err) {
@@ -343,6 +677,7 @@ static void renesas_fw_callback(const struct firmware *fw,
goto cleanup;
}
+do_probe:
xhci_pci_probe(pdev, ctx->id);
return;
--
2.25.1
run "echo 1 > /sys/kernel/debug/renesas-usb/rom_erase" to erase firmware
when driver is loaded.
Subsequent init of driver shall reload the firmware
Signed-off-by: Vinod Koul <[email protected]>
---
drivers/usb/host/xhci-pci-renesas.c | 35 +++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/drivers/usb/host/xhci-pci-renesas.c b/drivers/usb/host/xhci-pci-renesas.c
index d43b3a76dff5..c1088b07dfa9 100644
--- a/drivers/usb/host/xhci-pci-renesas.c
+++ b/drivers/usb/host/xhci-pci-renesas.c
@@ -2,6 +2,7 @@
/* Copyright (C) 2019-2020 Linaro Limited */
#include <linux/acpi.h>
+#include <linux/debugfs.h>
#include <linux/firmware.h>
#include <linux/module.h>
#include <linux/pci.h>
@@ -162,6 +163,8 @@ static int renesas_fw_verify(struct pci_dev *dev,
return 0;
}
+static void debugfs_init(struct pci_dev *pdev);
+
static int renesas_check_rom_state(struct pci_dev *pdev)
{
u16 rom_state;
@@ -194,9 +197,11 @@ static int renesas_check_rom_state(struct pci_dev *pdev)
/* Check the "Result Code" Bits (6:4) and act accordingly */
switch (rom_state & RENESAS_ROM_STATUS_RESULT) {
case RENESAS_ROM_STATUS_SUCCESS:
+ debugfs_init(pdev);
return 0;
case RENESAS_ROM_STATUS_NO_RESULT: /* No result yet */
+ debugfs_init(pdev);
return 0;
case RENESAS_ROM_STATUS_ERROR: /* Error State */
@@ -450,6 +455,34 @@ static void renesas_rom_erase(struct pci_dev *pdev)
dev_dbg(&pdev->dev, "ROM Erase... Done success\n");
}
+static int debugfs_rom_erase(void *data, u64 value)
+{
+ struct pci_dev *pdev = data;
+
+ if (value == 1) {
+ dev_dbg(&pdev->dev, "Userspace requested ROM erase\n");
+ renesas_rom_erase(pdev);
+ return 0;
+ }
+ return -EINVAL;
+}
+DEFINE_DEBUGFS_ATTRIBUTE(rom_erase_ops, NULL, debugfs_rom_erase, "%llu\n");
+
+static struct dentry *debugfs_root;
+
+static void debugfs_init(struct pci_dev *pdev)
+{
+ debugfs_root = debugfs_create_dir("renesas_usb", NULL);
+
+ debugfs_create_file("rom_erase", 0200, debugfs_root,
+ pdev, &rom_erase_ops);
+}
+
+static void debugfs_exit(void)
+{
+ debugfs_remove_recursive(debugfs_root);
+}
+
static bool renesas_download_rom(struct pci_dev *pdev,
const u32 *fw, size_t step)
{
@@ -761,6 +794,8 @@ int renesas_xhci_pci_probe(struct pci_dev *dev,
int renesas_xhci_pci_remove(struct pci_dev *dev)
{
+ debugfs_exit();
+
if (renesas_fw_check_running(dev)) {
/*
* bail out early, if this was a renesas device w/o FW.
--
2.25.1
Hi Vinod,
I love your patch! Yet something to improve:
[auto build test ERROR on v5.6-rc7]
[also build test ERROR on next-20200323]
[cannot apply to usb/usb-testing]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
url: https://github.com/0day-ci/linux/commits/Vinod-Koul/usb-xhci-Add-support-for-Renesas-USB-controllers/20200323-203447
base: 16fbf79b0f83bc752cee8589279f1ebfe57b3b6e
config: x86_64-defconfig (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 006244152d6c7dd6a390ff89b236cc7801834b46)
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
COMPILER=clang make.cross ARCH=x86_64
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <[email protected]>
All errors (new ones prefixed by >>):
In file included from drivers/usb/host/uhci-hcd.c:847:
>> drivers/usb/host/uhci-pci.c:297:36: error: passing 'const struct hc_driver *' to parameter of type 'struct hc_driver *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
return usb_hcd_pci_probe(dev, id, &uhci_driver);
^~~~~~~~~~~~
include/linux/usb/hcd.h:483:27: note: passing argument to parameter 'driver' here
struct hc_driver *driver);
^
1 error generated.
vim +297 drivers/usb/host/uhci-pci.c
294
295 static int uhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
296 {
> 297 return usb_hcd_pci_probe(dev, id, &uhci_driver);
298 }
299
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]
On Mon, 23 Mar 2020, Vinod Koul wrote:
> usb_hcd_pci_probe expects users to call this with driver_data set as
> hc_driver, that limits the possibility of using the driver_data for
> driver data.
>
> Add hc_driver as argument to usb_hcd_pci_probe and modify the callers
> ehci/ohci/xhci/uhci to pass hc_driver as argument and freeup the
> driver_data used
>
> Tested xhci driver on Dragon-board RB3, compile tested ehci and ohci.
> Couldn't compile uhci
>
> Suggested-by: Mathias Nyman <[email protected]>
> Signed-off-by: Vinod Koul <[email protected]>
> ---
> drivers/usb/core/hcd-pci.c | 7 ++++---
> drivers/usb/host/ehci-pci.c | 6 ++----
> drivers/usb/host/ohci-pci.c | 9 ++++++---
> drivers/usb/host/uhci-pci.c | 8 ++++++--
> drivers/usb/host/xhci-pci.c | 14 +++++---------
> include/linux/usb/hcd.h | 3 ++-
> 6 files changed, 25 insertions(+), 22 deletions(-)
For all but the xHCI parts:
Acked-by: Alan Stern <[email protected]>
On 23-03-20, 22:49, kbuild test robot wrote:
> Hi Vinod,
>
> I love your patch! Yet something to improve:
Thanks for the report.
> [auto build test ERROR on v5.6-rc7]
> [also build test ERROR on next-20200323]
> [cannot apply to usb/usb-testing]
> [if your patch is applied to the wrong git tree, please drop us a note to help
> improve the system. BTW, we also suggest to use '--base' option to specify the
> base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
>
> url: https://github.com/0day-ci/linux/commits/Vinod-Koul/usb-xhci-Add-support-for-Renesas-USB-controllers/20200323-203447
> base: 16fbf79b0f83bc752cee8589279f1ebfe57b3b6e
> config: x86_64-defconfig (attached as .config)
> compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 006244152d6c7dd6a390ff89b236cc7801834b46)
> reproduce:
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # save the attached .config to linux build tree
> COMPILER=clang make.cross ARCH=x86_64
>
> If you fix the issue, kindly add following tag
> Reported-by: kbuild test robot <[email protected]>
>
> All errors (new ones prefixed by >>):
>
> In file included from drivers/usb/host/uhci-hcd.c:847:
> >> drivers/usb/host/uhci-pci.c:297:36: error: passing 'const struct hc_driver *' to parameter of type 'struct hc_driver *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
> return usb_hcd_pci_probe(dev, id, &uhci_driver);
> ^~~~~~~~~~~~
> include/linux/usb/hcd.h:483:27: note: passing argument to parameter 'driver' here
> struct hc_driver *driver);
I need to drop the const qualifiers for uhci_driver, I have checked that
and will send v8 with this fix
--
~Vinod
On 23-03-20, 11:25, Alan Stern wrote:
> On Mon, 23 Mar 2020, Vinod Koul wrote:
>
> > usb_hcd_pci_probe expects users to call this with driver_data set as
> > hc_driver, that limits the possibility of using the driver_data for
> > driver data.
> >
> > Add hc_driver as argument to usb_hcd_pci_probe and modify the callers
> > ehci/ohci/xhci/uhci to pass hc_driver as argument and freeup the
> > driver_data used
> >
> > Tested xhci driver on Dragon-board RB3, compile tested ehci and ohci.
> > Couldn't compile uhci
> >
> > Suggested-by: Mathias Nyman <[email protected]>
> > Signed-off-by: Vinod Koul <[email protected]>
> > ---
> > drivers/usb/core/hcd-pci.c | 7 ++++---
> > drivers/usb/host/ehci-pci.c | 6 ++----
> > drivers/usb/host/ohci-pci.c | 9 ++++++---
> > drivers/usb/host/uhci-pci.c | 8 ++++++--
> > drivers/usb/host/xhci-pci.c | 14 +++++---------
> > include/linux/usb/hcd.h | 3 ++-
> > 6 files changed, 25 insertions(+), 22 deletions(-)
>
> For all but the xHCI parts:
>
> Acked-by: Alan Stern <[email protected]>
Alan, Thanks for the quick ack. I will send v8 with your ack on first
patch (that touches *hci )
Thanks
--
~Vinod
On Mon, 23 Mar 2020, Vinod Koul wrote:
> On 23-03-20, 22:49, kbuild test robot wrote:
> > Hi Vinod,
> >
> > I love your patch! Yet something to improve:
>
> Thanks for the report.
>
> > [auto build test ERROR on v5.6-rc7]
> > [also build test ERROR on next-20200323]
> > [cannot apply to usb/usb-testing]
> > [if your patch is applied to the wrong git tree, please drop us a note to help
> > improve the system. BTW, we also suggest to use '--base' option to specify the
> > base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
> >
> > url: https://github.com/0day-ci/linux/commits/Vinod-Koul/usb-xhci-Add-support-for-Renesas-USB-controllers/20200323-203447
> > base: 16fbf79b0f83bc752cee8589279f1ebfe57b3b6e
> > config: x86_64-defconfig (attached as .config)
> > compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 006244152d6c7dd6a390ff89b236cc7801834b46)
> > reproduce:
> > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> > chmod +x ~/bin/make.cross
> > # save the attached .config to linux build tree
> > COMPILER=clang make.cross ARCH=x86_64
> >
> > If you fix the issue, kindly add following tag
> > Reported-by: kbuild test robot <[email protected]>
> >
> > All errors (new ones prefixed by >>):
> >
> > In file included from drivers/usb/host/uhci-hcd.c:847:
> > >> drivers/usb/host/uhci-pci.c:297:36: error: passing 'const struct hc_driver *' to parameter of type 'struct hc_driver *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
> > return usb_hcd_pci_probe(dev, id, &uhci_driver);
> > ^~~~~~~~~~~~
> > include/linux/usb/hcd.h:483:27: note: passing argument to parameter 'driver' here
> > struct hc_driver *driver);
>
> I need to drop the const qualifiers for uhci_driver, I have checked that
> and will send v8 with this fix
No, don't remove the qualifier for uhci_driver. Instead, change
usb_hcd_pci_probe(): make driver a pointer to const.
Alan Stern
On 23-03-20, 11:48, Alan Stern wrote:
> On Mon, 23 Mar 2020, Vinod Koul wrote:
>
> > On 23-03-20, 22:49, kbuild test robot wrote:
> > > Hi Vinod,
> > >
> > > I love your patch! Yet something to improve:
> >
> > Thanks for the report.
> >
> > > [auto build test ERROR on v5.6-rc7]
> > > [also build test ERROR on next-20200323]
> > > [cannot apply to usb/usb-testing]
> > > [if your patch is applied to the wrong git tree, please drop us a note to help
> > > improve the system. BTW, we also suggest to use '--base' option to specify the
> > > base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
> > >
> > > url: https://github.com/0day-ci/linux/commits/Vinod-Koul/usb-xhci-Add-support-for-Renesas-USB-controllers/20200323-203447
> > > base: 16fbf79b0f83bc752cee8589279f1ebfe57b3b6e
> > > config: x86_64-defconfig (attached as .config)
> > > compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 006244152d6c7dd6a390ff89b236cc7801834b46)
> > > reproduce:
> > > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> > > chmod +x ~/bin/make.cross
> > > # save the attached .config to linux build tree
> > > COMPILER=clang make.cross ARCH=x86_64
> > >
> > > If you fix the issue, kindly add following tag
> > > Reported-by: kbuild test robot <[email protected]>
> > >
> > > All errors (new ones prefixed by >>):
> > >
> > > In file included from drivers/usb/host/uhci-hcd.c:847:
> > > >> drivers/usb/host/uhci-pci.c:297:36: error: passing 'const struct hc_driver *' to parameter of type 'struct hc_driver *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
> > > return usb_hcd_pci_probe(dev, id, &uhci_driver);
> > > ^~~~~~~~~~~~
> > > include/linux/usb/hcd.h:483:27: note: passing argument to parameter 'driver' here
> > > struct hc_driver *driver);
> >
> > I need to drop the const qualifiers for uhci_driver, I have checked that
> > and will send v8 with this fix
>
> No, don't remove the qualifier for uhci_driver. Instead, change
> usb_hcd_pci_probe(): make driver a pointer to const.
Thanks that is indeed a better idea.
Will send v8 shortly
--
~Vinod
Hi Vinod,
I love your patch! Perhaps something to improve:
[auto build test WARNING on v5.6-rc7]
[also build test WARNING on next-20200323]
[cannot apply to usb/usb-testing]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
url: https://github.com/0day-ci/linux/commits/Vinod-Koul/usb-xhci-Add-support-for-Renesas-USB-controllers/20200323-203447
base: 16fbf79b0f83bc752cee8589279f1ebfe57b3b6e
config: i386-allyesconfig (attached as .config)
compiler: gcc-7 (Debian 7.5.0-5) 7.5.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <[email protected]>
All warnings (new ones prefixed by >>):
In file included from drivers/usb/host/uhci-hcd.c:847:0:
drivers/usb/host/uhci-pci.c: In function 'uhci_pci_probe':
>> drivers/usb/host/uhci-pci.c:297:36: warning: passing argument 3 of 'usb_hcd_pci_probe' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
return usb_hcd_pci_probe(dev, id, &uhci_driver);
^
In file included from drivers/usb/host/uhci-hcd.c:42:0:
include/linux/usb/hcd.h:481:12: note: expected 'struct hc_driver *' but argument is of type 'const struct hc_driver *'
extern int usb_hcd_pci_probe(struct pci_dev *dev,
^~~~~~~~~~~~~~~~~
vim +297 drivers/usb/host/uhci-pci.c
294
295 static int uhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
296 {
> 297 return usb_hcd_pci_probe(dev, id, &uhci_driver);
298 }
299
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]