LinuxLists.cc - [PATCH 0/2] net: Add Keystone NetCP ethernet driver support

2014-04-22 21:21:59

Subject: [PATCH 0/2] net: Add Keystone NetCP ethernet driver support

Couple of patches to add Keystone NetCP ethernet driver support.

The network coprocessor (NetCP) is a hardware accelerator that processes
Ethernet packets. NetCP has a gigabit Ethernet (GbE) subsystem with a ethernet
switch sub-module to send and receive packets. NetCP also includes a packet
accelerator (PA) module to perform packet classification operations such as
header matching, and packet modification operations such as checksum
generation. NetCP can also optionally include a Security Accelerator(SA)
capable of performing IPSec operations on ingress/egress packets.

Keystone SoC's also have a 10 Gigabit Ethernet Subsystem (XGbE) which
includes a 3-port Ethernet switch sub-module capable of 10Gb/s and
1Gb/s rates per Ethernet port.

NetCP driver has a plug-in module architecture where each of the NetCP
sub-modules exist as a loadable kernel module which plug in to the netcp
core. These sub-modules are represented as "netcp-devices" in the dts
bindings. It is mandatory to have the ethernet switch sub-module for
the ethernet interface to be operational. Any other sub-module like the
PA is optional.

Both GBE and XGBE network processors supported using common driver. It
is also designed to handle future variants of NetCP.

Cc: David Miller <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Grant Likely <[email protected]>
Cc: Sandeep Nair <[email protected]>

Sandeep Nair (2):
Documentation: dt: net: Add binding doc for Keystone NetCP ethernet
driver
net: Add Keystone NetCP ethernet driver

.../devicetree/bindings/net/keystone-netcp.txt | 197 ++
drivers/net/ethernet/ti/Kconfig | 16 +-
drivers/net/ethernet/ti/Makefile | 4 +
drivers/net/ethernet/ti/netcp.h | 226 ++
drivers/net/ethernet/ti/netcp_core.c | 2194 ++++++++++++++++++++
drivers/net/ethernet/ti/netcp_ethss.c | 2177 +++++++++++++++++++
drivers/net/ethernet/ti/netcp_sgmii.c | 130 ++
drivers/net/ethernet/ti/netcp_xgbepcsr.c | 502 +++++
8 files changed, 5443 insertions(+), 3 deletions(-)
create mode 100644 Documentation/devicetree/bindings/net/keystone-netcp.txt
create mode 100644 drivers/net/ethernet/ti/netcp.h
create mode 100644 drivers/net/ethernet/ti/netcp_core.c
create mode 100644 drivers/net/ethernet/ti/netcp_ethss.c
create mode 100644 drivers/net/ethernet/ti/netcp_sgmii.c
create mode 100644 drivers/net/ethernet/ti/netcp_xgbepcsr.c

--
1.7.9.5

2014-04-22 21:22:11

by Santosh Shilimkar

[permalink] [raw]

Subject: [PATCH 1/2] Documentation: dt: net: Add binding doc for Keystone NetCP ethernet driver

2014-04-22 21:22:31

by Santosh Shilimkar

[permalink] [raw]

Subject: [PATCH 2/2] net: Add Keystone NetCP ethernet driver

From: Sandeep Nair <[email protected]>

The network coprocessor (NetCP) is a hardware accelerator that processes
Ethernet packets. NetCP has a gigabit Ethernet (GbE) subsystem with a ethernet
switch sub-module to send and receive packets. NetCP also includes a packet
accelerator (PA) module to perform packet classification operations such as
header matching, and packet modification operations such as checksum
generation. NetCP can also optionally include a Security Accelerator(SA)
capable of performing IPSec operations on ingress/egress packets.

Keystone SoC's also have a 10 Gigabit Ethernet Subsystem (XGbE) which
includes a 3-port Ethernet switch sub-module capable of 10Gb/s and
1Gb/s rates per Ethernet port.

NetCP driver has a plug-in module architecture where each of the NetCP
sub-modules exist as a loadable kernel module which plug in to the netcp
core. These sub-modules are represented as "netcp-devices" in the dts
bindings. It is mandatory to have the ethernet switch sub-module for
the ethernet interface to be operational. Any other sub-module like the
PA is optional.

Both GBE and XGBE network processors supported using common driver. It
is also designed to handle future variants of NetCP.

Cc: Rob Herring <[email protected]>
Cc: Grant Likely <[email protected]>
Cc: David Miller <[email protected]>

Signed-off-by: Sandeep Nair <[email protected]>
Signed-off-by: Santosh Shilimkar <[email protected]>
---
drivers/net/ethernet/ti/Kconfig | 16 +-
drivers/net/ethernet/ti/Makefile | 4 +
drivers/net/ethernet/ti/netcp.h | 226 +++
drivers/net/ethernet/ti/netcp_core.c | 2194 ++++++++++++++++++++++++++++++
drivers/net/ethernet/ti/netcp_ethss.c | 2177 +++++++++++++++++++++++++++++
drivers/net/ethernet/ti/netcp_sgmii.c | 130 ++
drivers/net/ethernet/ti/netcp_xgbepcsr.c | 502 +++++++
7 files changed, 5246 insertions(+), 3 deletions(-)
create mode 100644 drivers/net/ethernet/ti/netcp.h
create mode 100644 drivers/net/ethernet/ti/netcp_core.c
create mode 100644 drivers/net/ethernet/ti/netcp_ethss.c
create mode 100644 drivers/net/ethernet/ti/netcp_sgmii.c
create mode 100644 drivers/net/ethernet/ti/netcp_xgbepcsr.c

diff --git a/drivers/net/ethernet/ti/Kconfig b/drivers/net/ethernet/ti/Kconfig
index 53150c2..54ea39c 100644
--- a/drivers/net/ethernet/ti/Kconfig
+++ b/drivers/net/ethernet/ti/Kconfig
@@ -5,7 +5,7 @@
config NET_VENDOR_TI
bool "Texas Instruments (TI) devices"
default y
- depends on PCI || EISA || AR7 || (ARM && (ARCH_DAVINCI || ARCH_OMAP3 || SOC_AM33XX))
+ depends on PCI || EISA || AR7 || (ARM && (ARCH_DAVINCI || ARCH_OMAP3 || SOC_AM33XX || ARCH_KEYSTONE))
---help---
If you have a network (Ethernet) card belonging to this class, say Y
and read the Ethernet-HOWTO, available from
@@ -32,7 +32,7 @@ config TI_DAVINCI_EMAC

config TI_DAVINCI_MDIO
tristate "TI DaVinci MDIO Support"
- depends on ARM && ( ARCH_DAVINCI || ARCH_OMAP3 || SOC_AM33XX )
+ depends on ARM && ( ARCH_DAVINCI || ARCH_OMAP3 || SOC_AM33XX || ARCH_KEYSTONE )
select PHYLIB
---help---
This driver supports TI's DaVinci MDIO module.
@@ -70,13 +70,23 @@ config TI_CPSW

config TI_CPTS
boolean "TI Common Platform Time Sync (CPTS) Support"
- depends on TI_CPSW
+ depends on TI_CPSW || TI_KEYSTONE_NET
select PTP_1588_CLOCK
---help---
This driver supports the Common Platform Time Sync unit of
the CPSW Ethernet Switch. The unit can time stamp PTP UDP/IPv4
and Layer 2 packets, and the driver offers a PTP Hardware Clock.

+config TI_KEYSTONE_NETCP
+ tristate "TI Keystone NETCP Ethernet subsystem Support"
+ depends on ARCH_KEYSTONE && OF
+ default y if ARCH_KEYSTONE
+ ---help---
+ This driver supports TI's Keystone NETCP Ethernet subsystem.
+
+ To compile this driver as a module, choose M here: the module
+ will be called keystone_netcp.
+
config TLAN
tristate "TI ThunderLAN support"
depends on (PCI || EISA)
diff --git a/drivers/net/ethernet/ti/Makefile b/drivers/net/ethernet/ti/Makefile
index 9cfaab8..465d03d 100644
--- a/drivers/net/ethernet/ti/Makefile
+++ b/drivers/net/ethernet/ti/Makefile
@@ -10,3 +10,7 @@ obj-$(CONFIG_TI_DAVINCI_CPDMA) += davinci_cpdma.o
obj-$(CONFIG_TI_CPSW_PHY_SEL) += cpsw-phy-sel.o
obj-$(CONFIG_TI_CPSW) += ti_cpsw.o
ti_cpsw-y := cpsw_ale.o cpsw.o cpts.o
+
+obj-$(CONFIG_TI_KEYSTONE_NETCP) += keystone_netcp.o
+keystone_netcp-y := netcp_core.o netcp_ethss.o netcp_sgmii.o \
+ netcp_xgbepcsr.o cpsw_ale.o cpts.o
diff --git a/drivers/net/ethernet/ti/netcp.h b/drivers/net/ethernet/ti/netcp.h
new file mode 100644
index 0000000..b784d78
--- /dev/null
+++ b/drivers/net/ethernet/ti/netcp.h
@@ -0,0 +1,226 @@
+/*
+ * NetCP driver local header
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated
+ * Authors: Sandeep Nair <[email protected]>
+ * Sandeep Paulraj <[email protected]>
+ * Cyril Chemparathy <[email protected]>
+ * Santosh Shilimkar <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#ifndef __NETCP_H__
+#define __NETCP_H__
+
+#include <linux/netdevice.h>
+#include <linux/soc/ti/knav_dma.h>
+
+/* Maximum Ethernet frame size supported by Keystone switch */
+#define NETCP_MAX_FRAME_SIZE 9504
+
+#define SGMII_LINK_MAC_MAC_AUTONEG 0
+#define SGMII_LINK_MAC_PHY 1
+#define SGMII_LINK_MAC_MAC_FORCED 2
+#define SGMII_LINK_MAC_FIBER 3
+#define SGMII_LINK_MAC_PHY_NO_MDIO 4
+#define XGMII_LINK_MAC_PHY 10
+#define XGMII_LINK_MAC_MAC_FORCED 11
+
+struct netcp_device;
+
+struct netcp_tx_pipe {
+ struct netcp_device *netcp_device;
+ void *dma_queue;
+ unsigned dma_queue_id;
+ u8 dma_psflags;
+ void *dma_channel;
+ unsigned dma_chan_id;
+};
+
+#define ADDR_NEW BIT(0)
+#define ADDR_VALID BIT(1)
+
+enum netcp_addr_type {
+ ADDR_ANY,
+ ADDR_DEV,
+ ADDR_UCAST,
+ ADDR_MCAST,
+ ADDR_BCAST
+};
+
+struct netcp_addr {
+ struct netcp_intf *netcp;
+ unsigned char addr[MAX_ADDR_LEN];
+ enum netcp_addr_type type;
+ unsigned int flags;
+ struct list_head node;
+};
+
+struct netcp_intf {
+ struct device *dev;
+ struct device *ndev_dev;
+ struct net_device *ndev;
+ bool big_endian;
+ unsigned tx_compl_qid;
+ void *tx_pool;
+ struct list_head txhook_list_head;
+ unsigned int tx_pause_threshold;
+ void *tx_compl_q;
+
+ unsigned int tx_resume_threshold;
+ void *rx_queue;
+ void *rx_pool;
+ struct list_head rxhook_list_head;
+ unsigned rx_queue_id;
+ void *rx_fdq[KNAV_DMA_FDQ_PER_CHAN];
+ u32 rx_buffer_sizes[KNAV_DMA_FDQ_PER_CHAN];
+ struct napi_struct rx_napi;
+ struct napi_struct tx_napi;
+
+ void *rx_channel;
+ unsigned dma_chan_id;
+ u32 rx_pool_size;
+ u32 rx_pool_region_id;
+ u32 tx_pool_size;
+ u32 tx_pool_region_id;
+ struct list_head module_head;
+ struct list_head interface_list;
+ struct list_head addr_list;
+ bool netdev_registered;
+ bool primary_module_attached;
+
+ /* Lock used for protecting Rx/Tx hook list management */
+ spinlock_t lock;
+ struct netcp_device *netcp_device;
+ struct device_node *node_interface;
+
+ /* DMA configuration data */
+ u32 msg_enable;
+ u32 rx_queue_depths[KNAV_DMA_FDQ_PER_CHAN];
+};
+
+#define NETCP_PSDATA_LEN KNAV_DMA_NUM_PS_WORDS
+struct netcp_packet {
+ struct sk_buff *skb;
+ u32 *epib;
+ u32 *psdata;
+ unsigned int psdata_len;
+ struct netcp_intf *netcp;
+ struct netcp_tx_pipe *tx_pipe;
+ bool rxtstamp_complete;
+ void *ts_context;
+ int (*txtstamp_complete)(void *ctx, struct netcp_packet *pkt);
+};
+
+static inline u32 *netcp_push_psdata(struct netcp_packet *p_info,
+ unsigned bytes)
+{
+ u32 *buf;
+ unsigned words;
+
+ if ((bytes & 0x03) != 0)
+ return NULL;
+ words = bytes >> 2;
+
+ if ((p_info->psdata_len + words) > NETCP_PSDATA_LEN)
+ return NULL;
+
+ p_info->psdata_len += words;
+ buf = &p_info->psdata[NETCP_PSDATA_LEN - p_info->psdata_len];
+ return buf;
+}
+
+static inline int netcp_align_psdata(struct netcp_packet *p_info,
+ unsigned byte_align)
+{
+ int padding;
+
+ switch (byte_align) {
+ case 0:
+ padding = -EINVAL;
+ break;
+ case 1:
+ case 2:
+ case 4:
+ padding = 0;
+ break;
+ case 8:
+ padding = (p_info->psdata_len << 2) % 8;
+ break;
+ case 16:
+ padding = (p_info->psdata_len << 2) % 16;
+ break;
+ default:
+ padding = (p_info->psdata_len << 2) % byte_align;
+ break;
+ }
+ return padding;
+}
+
+struct netcp_module {
+ const char *name;
+ struct module *owner;
+ bool primary;
+
+ /* probe/remove: called once per NETCP instance */
+ int (*probe)(struct netcp_device *netcp_device,
+ struct device *device, struct device_node *node,
+ void **inst_priv);
+ int (*remove)(struct netcp_device *netcp_device, void *inst_priv);
+
+ /* attach/release: called once per network interface */
+ int (*attach)(void *inst_priv, struct net_device *ndev,
+ struct device_node *node, void **intf_priv);
+ int (*release)(void *intf_priv);
+ int (*open)(void *intf_priv, struct net_device *ndev);
+ int (*close)(void *intf_priv, struct net_device *ndev);
+ int (*add_addr)(void *intf_priv, struct netcp_addr *naddr);
+ int (*del_addr)(void *intf_priv, struct netcp_addr *naddr);
+ int (*add_vid)(void *intf_priv, int vid);
+ int (*del_vid)(void *intf_priv, int vid);
+ int (*ioctl)(void *intf_priv, struct ifreq *req, int cmd);
+
+ /* used internally */
+ struct list_head module_list;
+ struct list_head interface_list;
+};
+
+int netcp_register_module(struct netcp_module *module);
+void netcp_unregister_module(struct netcp_module *module);
+void *netcp_module_get_intf_data(struct netcp_module *module,
+ struct netcp_intf *intf);
+
+int netcp_txpipe_init(struct netcp_tx_pipe *tx_pipe,
+ struct netcp_device *netcp_device, unsigned dma_chan_id,
+ unsigned dma_queue_id);
+int netcp_txpipe_open(struct netcp_tx_pipe *tx_pipe);
+int netcp_txpipe_close(struct netcp_tx_pipe *tx_pipe);
+
+typedef int netcp_hook_rtn(int order, void *data, struct netcp_packet *packet);
+int netcp_register_txhook(struct netcp_intf *netcp_priv, int order,
+ netcp_hook_rtn *hook_rtn, void *hook_data);
+int netcp_unregister_txhook(struct netcp_intf *netcp_priv, int order,
+ netcp_hook_rtn *hook_rtn, void *hook_data);
+int netcp_register_rxhook(struct netcp_intf *netcp_priv, int order,
+ netcp_hook_rtn *hook_rtn, void *hook_data);
+int netcp_unregister_rxhook(struct netcp_intf *netcp_priv, int order,
+ netcp_hook_rtn *hook_rtn, void *hook_data);
+void *netcp_device_find_module(struct netcp_device *netcp_device,
+ const char *name);
+
+/* SGMII functions */
+int netcp_sgmii_reset(void __iomem *sgmii_ofs, int port);
+int netcp_sgmii_get_port_link(void __iomem *sgmii_ofs, int port);
+int netcp_sgmii_config(void __iomem *sgmii_ofs, int port, u32 interface);
+
+/* XGBE SERDES init functions */
+int netcp_xgbe_serdes_init(void __iomem *serdes_regs, void __iomem *xgbe_regs);
+
+#endif /* __NETCP_H__ */
diff --git a/drivers/net/ethernet/ti/netcp_core.c b/drivers/net/ethernet/ti/netcp_core.c
new file mode 100644
index 0000000..94feebc
--- /dev/null
+++ b/drivers/net/ethernet/ti/netcp_core.c
@@ -0,0 +1,2194 @@
+/*
+ * Keystone NetCP Core driver
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated
+ * Authors: Sandeep Nair <[email protected]>
+ * Sandeep Paulraj <[email protected]>
+ * Cyril Chemparathy <[email protected]>
+ * Santosh Shilimkar <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of_net.h>
+#include <linux/of_address.h>
+#include <linux/if_vlan.h>
+#include <linux/pm_runtime.h>
+#include <linux/platform_device.h>
+#include <linux/soc/ti/knav_qmss.h>
+#include <linux/soc/ti/knav_dma.h>
+
+#include "netcp.h"
+
+#define NETCP_SOP_OFFSET (NET_IP_ALIGN + NET_SKB_PAD)
+#define NETCP_NAPI_WEIGHT 64
+#define NETCP_TX_TIMEOUT (5 * HZ)
+#define NETCP_MIN_PACKET_SIZE ETH_ZLEN
+#define NETCP_MAX_MCAST_ADDR 16
+
+#define NETCP_EFUSE_REG_INDEX 0
+
+#define NETCP_MOD_PROBE_SKIPPED 1
+#define NETCP_MOD_PROBE_FAILED 2
+
+#define NETCP_DEBUG (NETIF_MSG_HW | NETIF_MSG_WOL | \
+ NETIF_MSG_DRV | NETIF_MSG_LINK | \
+ NETIF_MSG_IFUP | NETIF_MSG_INTR | \
+ NETIF_MSG_PROBE | NETIF_MSG_TIMER | \
+ NETIF_MSG_IFDOWN | NETIF_MSG_RX_ERR | \
+ NETIF_MSG_TX_ERR | NETIF_MSG_TX_DONE | \
+ NETIF_MSG_PKTDATA | NETIF_MSG_TX_QUEUED | \
+ NETIF_MSG_RX_STATUS)
+
+#define knav_queue_get_id(q) knav_queue_device_control(q, \
+ KNAV_QUEUE_GET_ID, (unsigned long) NULL)
+
+#define knav_queue_enable_notify(q) knav_queue_device_control(q, \
+ KNAV_QUEUE_ENABLE_NOTIFY, \
+ (unsigned long) NULL)
+
+#define knav_queue_disable_notify(q) knav_queue_device_control(q, \
+ KNAV_QUEUE_DISABLE_NOTIFY, \
+ (unsigned long) NULL)
+
+#define knav_queue_get_count(q) knav_queue_device_control(q, \
+ KNAV_QUEUE_GET_COUNT, (unsigned long) NULL)
+
+#define for_each_netcp_module(module) \
+ list_for_each_entry(module, &netcp_modules, module_list)
+
+#define for_each_netcp_device_module(netcp_device, inst_modpriv) \
+ list_for_each_entry(inst_modpriv, \
+ &((netcp_device)->modpriv_head), inst_list)
+
+#define for_each_module(netcp, intf_modpriv) \
+ list_for_each_entry(intf_modpriv, &netcp->module_head, intf_list)
+
+/* Module management structures */
+struct netcp_device {
+ struct list_head device_list;
+ struct list_head interface_head;
+ struct list_head modpriv_head;
+ struct device *device;
+ bool big_endian;
+ unsigned dma_id;
+};
+
+struct netcp_inst_modpriv {
+ struct netcp_device *netcp_device;
+ struct netcp_module *netcp_module;
+ struct list_head inst_list;
+ void *module_priv;
+};
+
+struct netcp_intf_modpriv {
+ struct netcp_intf *netcp_priv;
+ struct netcp_module *netcp_module;
+ struct list_head intf_list;
+ void *module_priv;
+};
+
+static LIST_HEAD(netcp_devices);
+static LIST_HEAD(netcp_modules);
+static DEFINE_MUTEX(netcp_modules_lock);
+
+static int netcp_debug_level = -1;
+module_param(netcp_debug_level, int, 0);
+MODULE_PARM_DESC(netcp_debug_level, "Netcp debug level (NETIF_MSG bits) (0=none,...,16=all)");
+
+static inline u32 hwval_to_host(bool big_endian, u32 hwval)
+{
+ if (big_endian)
+ return be32_to_cpu(hwval);
+ else
+ return le32_to_cpu(hwval);
+}
+
+/* Read the e-fuse value as 32 bit values to be endian independent */
+static inline int emac_arch_get_mac_addr(char *x, void __iomem *efuse_mac)
+{
+ unsigned int addr0, addr1;
+
+ addr1 = readl_relaxed(efuse_mac + 4);
+ addr0 = readl_relaxed(efuse_mac);
+
+ x[0] = (addr1 & 0x0000ff00) >> 8;
+ x[1] = addr1 & 0x000000ff;
+ x[2] = (addr0 & 0xff000000) >> 24;
+ x[3] = (addr0 & 0x00ff0000) >> 16;
+ x[4] = (addr0 & 0x0000ff00) >> 8;
+ x[5] = addr0 & 0x000000ff;
+
+ return 0;
+}
+
+static const char *netcp_node_name(struct device_node *node)
+{
+ const char *name;
+
+ if (of_property_read_string(node, "label", &name) < 0)
+ name = node->name;
+ if (!name)
+ name = "unknown";
+ return name;
+}
+
+/* Module management routines */
+static int netcp_register_interface(struct netcp_intf *netcp)
+{
+ int ret;
+
+ ret = register_netdev(netcp->ndev);
+ if (!ret)
+ netcp->netdev_registered = true;
+ return ret;
+}
+
+static int netcp_module_probe(struct netcp_device *netcp_device,
+ struct netcp_module *module)
+{
+ struct device *dev = netcp_device->device;
+ struct device_node *devices, *interface, *node = dev->of_node;
+ struct device_node *child;
+ struct netcp_inst_modpriv *inst_modpriv;
+ struct netcp_intf *netcp_intf;
+ struct netcp_module *tmp;
+ bool primary_module_registered = false;
+ int ret;
+
+ /* Find this module in the sub-tree for this device */
+ devices = of_get_child_by_name(node, "netcp-devices");
+ if (!devices) {
+ dev_err(dev, "could not find netcp-devices node\n");
+ return NETCP_MOD_PROBE_SKIPPED;
+ }
+
+ for_each_available_child_of_node(devices, child) {
+ const char *name = netcp_node_name(child);
+ if (!strcasecmp(module->name, name))
+ break;
+ }
+
+ /* If module not used for this device, skip it */
+ if (child == NULL) {
+ dev_warn(dev, "module(%s) not used for device\n", module->name);
+ return NETCP_MOD_PROBE_SKIPPED;
+ }
+
+ inst_modpriv = devm_kzalloc(dev, sizeof(*inst_modpriv), GFP_KERNEL);
+ if (!inst_modpriv) {
+ dev_err(dev, "Failed to allocate instance for %s\n",
+ module->name);
+ return -ENOMEM;
+ }
+
+ inst_modpriv->netcp_device = netcp_device;
+ inst_modpriv->netcp_module = module;
+ list_add_tail(&inst_modpriv->inst_list, &netcp_device->modpriv_head);
+
+ ret = module->probe(netcp_device, dev, child,
+ &inst_modpriv->module_priv);
+ if (ret) {
+ dev_err(dev, "Probe of module(%s) failed with %d\n",
+ module->name, ret);
+ list_del(&inst_modpriv->inst_list);
+ devm_kfree(dev, inst_modpriv);
+ return NETCP_MOD_PROBE_FAILED;
+ }
+
+ /* Attach modules only if the primary module is probed */
+ for_each_netcp_module(tmp) {
+ if (tmp->primary)
+ primary_module_registered = true;
+ }
+
+ if (!primary_module_registered)
+ return 0;
+
+ /* Attach module to interfaces */
+ list_for_each_entry(netcp_intf, &netcp_device->interface_head,
+ interface_list) {
+ struct netcp_intf_modpriv *intf_modpriv;
+
+ /* If interface not registered then register now */
+ if (!netcp_intf->netdev_registered)
+ ret = netcp_register_interface(netcp_intf);
+
+ if (ret)
+ return -ENODEV;
+
+ intf_modpriv = devm_kzalloc(dev, sizeof(*intf_modpriv),
+ GFP_KERNEL);
+ if (!intf_modpriv) {
+ dev_err(dev, "Error allocating intf_modpriv for %s\n",
+ module->name);
+ return -ENOMEM;
+ }
+
+ interface = of_parse_phandle(netcp_intf->node_interface,
+ module->name, 0);
+
+ intf_modpriv->netcp_priv = netcp_intf;
+ intf_modpriv->netcp_module = module;
+ list_add_tail(&intf_modpriv->intf_list,
+ &netcp_intf->module_head);
+
+ ret = module->attach(inst_modpriv->module_priv,
+ netcp_intf->ndev, interface,
+ &intf_modpriv->module_priv);
+ of_node_put(interface);
+ if (ret) {
+ dev_dbg(dev, "Attach of module %s declined with %d\n",
+ module->name, ret);
+ list_del(&intf_modpriv->intf_list);
+ devm_kfree(dev, intf_modpriv);
+ continue;
+ }
+ }
+ return 0;
+}
+
+int netcp_register_module(struct netcp_module *module)
+{
+ struct netcp_device *netcp_device;
+ struct netcp_module *tmp;
+ int ret;
+
+ if (!module->name) {
+ WARN(1, "error registering netcp module: no name\n");
+ return -EINVAL;
+ }
+
+ if (!module->probe) {
+ WARN(1, "error registering netcp module: no probe\n");
+ return -EINVAL;
+ }
+
+ mutex_lock(&netcp_modules_lock);
+
+ for_each_netcp_module(tmp) {
+ if (!strcasecmp(tmp->name, module->name)) {
+ mutex_unlock(&netcp_modules_lock);
+ return -EEXIST;
+ }
+ }
+ list_add_tail(&module->module_list, &netcp_modules);
+
+ list_for_each_entry(netcp_device, &netcp_devices, device_list) {
+ ret = netcp_module_probe(netcp_device, module);
+ if (ret < 0)
+ goto fail;
+ }
+
+ mutex_unlock(&netcp_modules_lock);
+ return 0;
+
+fail:
+ mutex_unlock(&netcp_modules_lock);
+ netcp_unregister_module(module);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(netcp_register_module);
+
+static void netcp_release_module(struct netcp_device *netcp_device,
+ struct netcp_module *module)
+{
+ struct netcp_inst_modpriv *inst_modpriv, *inst_tmp;
+ struct netcp_intf *netcp_intf, *netcp_tmp;
+ struct device *dev = netcp_device->device;
+
+ /* Release the module from each interface */
+ list_for_each_entry_safe(netcp_intf, netcp_tmp,
+ &netcp_device->interface_head,
+ interface_list) {
+ struct netcp_intf_modpriv *intf_modpriv, *intf_tmp;
+
+ list_for_each_entry_safe(intf_modpriv, intf_tmp,
+ &netcp_intf->module_head,
+ intf_list) {
+ if (intf_modpriv->netcp_module == module) {
+ module->release(intf_modpriv->module_priv);
+ list_del(&intf_modpriv->intf_list);
+ devm_kfree(dev, intf_modpriv);
+ break;
+ }
+ }
+ }
+
+ /* Remove the module from each instance */
+ list_for_each_entry_safe(inst_modpriv, inst_tmp,
+ &netcp_device->modpriv_head, inst_list) {
+ if (inst_modpriv->netcp_module == module) {
+ module->remove(netcp_device,
+ inst_modpriv->module_priv);
+ list_del(&inst_modpriv->inst_list);
+ devm_kfree(dev, inst_modpriv);
+ break;
+ }
+ }
+}
+
+void netcp_unregister_module(struct netcp_module *module)
+{
+ struct netcp_device *netcp_device;
+ struct netcp_module *module_tmp;
+
+ mutex_lock(&netcp_modules_lock);
+
+ list_for_each_entry(netcp_device, &netcp_devices, device_list) {
+ netcp_release_module(netcp_device, module);
+ }
+
+ /* Remove the module from the module list */
+ for_each_netcp_module(module_tmp) {
+ if (module == module_tmp) {
+ list_del(&module->module_list);
+ break;
+ }
+ }
+
+ mutex_unlock(&netcp_modules_lock);
+}
+EXPORT_SYMBOL_GPL(netcp_unregister_module);
+
+void *netcp_module_get_intf_data(struct netcp_module *module,
+ struct netcp_intf *intf)
+{
+ struct netcp_intf_modpriv *intf_modpriv;
+ list_for_each_entry(intf_modpriv, &intf->module_head, intf_list)
+ if (intf_modpriv->netcp_module == module)
+ return intf_modpriv->module_priv;
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(netcp_module_get_intf_data);
+
+/* Module TX and RX Hook management */
+struct netcp_hook_list {
+ struct list_head list;
+ netcp_hook_rtn *hook_rtn;
+ void *hook_data;
+ int order;
+};
+
+int netcp_register_txhook(struct netcp_intf *netcp_priv, int order,
+ netcp_hook_rtn *hook_rtn, void *hook_data)
+{
+ struct netcp_hook_list *entry;
+ struct netcp_hook_list *next;
+ unsigned long flags;
+
+ entry = devm_kzalloc(netcp_priv->dev, sizeof(*entry), GFP_KERNEL);
+ if (!entry)
+ return -ENOMEM;
+
+ entry->hook_rtn = hook_rtn;
+ entry->hook_data = hook_data;
+ entry->order = order;
+
+ spin_lock_irqsave(&netcp_priv->lock, flags);
+ list_for_each_entry(next, &netcp_priv->txhook_list_head, list) {
+ if (next->order > order)
+ break;
+ }
+ __list_add(&entry->list, next->list.prev, &next->list);
+ spin_unlock_irqrestore(&netcp_priv->lock, flags);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(netcp_register_txhook);
+
+int netcp_unregister_txhook(struct netcp_intf *netcp_priv, int order,
+ netcp_hook_rtn *hook_rtn, void *hook_data)
+{
+ struct netcp_hook_list *next, *n;
+ unsigned long flags;
+
+ spin_lock_irqsave(&netcp_priv->lock, flags);
+ list_for_each_entry_safe(next, n, &netcp_priv->txhook_list_head, list) {
+ if ((next->order == order) &&
+ (next->hook_rtn == hook_rtn) &&
+ (next->hook_data == hook_data)) {
+ list_del(&next->list);
+ spin_unlock_irqrestore(&netcp_priv->lock, flags);
+ devm_kfree(netcp_priv->dev, next);
+ return 0;
+ }
+ }
+ spin_unlock_irqrestore(&netcp_priv->lock, flags);
+ return -ENOENT;
+}
+EXPORT_SYMBOL_GPL(netcp_unregister_txhook);
+
+int netcp_register_rxhook(struct netcp_intf *netcp_priv, int order,
+ netcp_hook_rtn *hook_rtn, void *hook_data)
+{
+ struct netcp_hook_list *entry;
+ struct netcp_hook_list *next;
+ unsigned long flags;
+
+ entry = devm_kzalloc(netcp_priv->dev, sizeof(*entry), GFP_KERNEL);
+ if (!entry)
+ return -ENOMEM;
+
+ entry->hook_rtn = hook_rtn;
+ entry->hook_data = hook_data;
+ entry->order = order;
+
+ spin_lock_irqsave(&netcp_priv->lock, flags);
+ list_for_each_entry(next, &netcp_priv->rxhook_list_head, list) {
+ if (next->order > order)
+ break;
+ }
+ __list_add(&entry->list, next->list.prev, &next->list);
+ spin_unlock_irqrestore(&netcp_priv->lock, flags);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(netcp_register_rxhook);
+
+int netcp_unregister_rxhook(struct netcp_intf *netcp_priv, int order,
+ netcp_hook_rtn *hook_rtn, void *hook_data)
+{
+ struct netcp_hook_list *next, *n;
+ unsigned long flags;
+
+ spin_lock_irqsave(&netcp_priv->lock, flags);
+ list_for_each_entry_safe(next, n, &netcp_priv->rxhook_list_head, list) {
+ if ((next->order == order) &&
+ (next->hook_rtn == hook_rtn) &&
+ (next->hook_data == hook_data)) {
+ list_del(&next->list);
+ spin_unlock_irqrestore(&netcp_priv->lock, flags);
+ devm_kfree(netcp_priv->dev, next);
+ return 0;
+ }
+ }
+ spin_unlock_irqrestore(&netcp_priv->lock, flags);
+
+ return -ENOENT;
+}
+EXPORT_SYMBOL_GPL(netcp_unregister_rxhook);
+
+static inline void netcp_frag_free(bool is_frag, void *ptr)
+{
+ if (is_frag)
+ put_page(virt_to_head_page(ptr));
+ else
+ kfree(ptr);
+}
+
+static void netcp_free_rx_desc_chain(struct netcp_intf *netcp,
+ struct knav_dma_desc *desc)
+{
+ struct knav_dma_desc *ndesc;
+ dma_addr_t dma_desc, dma_buf;
+ unsigned buf_len, dma_sz = sizeof(*ndesc);
+ void *buf_ptr;
+
+ dma_desc = hwval_to_host(netcp->big_endian, desc->next_desc);
+
+ while (dma_desc) {
+ ndesc = knav_pool_desc_unmap(netcp->rx_pool, dma_desc, dma_sz);
+ if (unlikely(!ndesc)) {
+ dev_err(netcp->ndev_dev, "failed to unmap Rx desc\n");
+ break;
+ }
+ if (netcp->big_endian) {
+ dma_buf = be32_to_cpu(ndesc->buff);
+ buf_ptr = (void *)be32_to_cpu(ndesc->pad[0]);
+ dma_desc = be32_to_cpu(ndesc->next_desc);
+ } else {
+ dma_buf = le32_to_cpu(ndesc->buff);
+ buf_ptr = (void *)le32_to_cpu(ndesc->pad[0]);
+ dma_desc = le32_to_cpu(ndesc->next_desc);
+ }
+ dma_unmap_page(netcp->dev, dma_buf, PAGE_SIZE, DMA_FROM_DEVICE);
+ __free_page(buf_ptr);
+ knav_pool_desc_put(netcp->rx_pool, desc);
+ }
+
+ if (netcp->big_endian) {
+ buf_ptr = (void *)be32_to_cpu(desc->pad[0]);
+ buf_len = be32_to_cpu(desc->pad[1]);
+ } else {
+ buf_ptr = (void *)le32_to_cpu(desc->pad[0]);
+ buf_len = le32_to_cpu(desc->pad[1]);
+ }
+ if (buf_ptr)
+ netcp_frag_free(buf_len <= PAGE_SIZE, buf_ptr);
+ knav_pool_desc_put(netcp->rx_pool, desc);
+}
+
+static void netcp_empty_rx_queue(struct netcp_intf *netcp)
+{
+ struct knav_dma_desc *desc;
+ unsigned dma_sz;
+ dma_addr_t dma;
+
+ for (; ;) {
+ dma = knav_queue_pop(netcp->rx_queue, &dma_sz);
+ if (!dma)
+ break;
+
+ desc = knav_pool_desc_unmap(netcp->rx_pool, dma, dma_sz);
+ if (unlikely(!desc)) {
+ dev_err(netcp->ndev_dev, "%s: failed to unmap Rx desc\n",
+ __func__);
+ netcp->ndev->stats.rx_errors++;
+ continue;
+ }
+ netcp_free_rx_desc_chain(netcp, desc);
+ netcp->ndev->stats.rx_dropped++;
+ }
+}
+
+static inline int netcp_process_one_rx_packet(struct netcp_intf *netcp)
+{
+ unsigned dma_sz, buf_len, org_buf_len;
+ struct knav_dma_desc *desc, *ndesc;
+ unsigned pkt_sz = 0, accum_sz;
+ struct netcp_hook_list *rx_hook;
+ dma_addr_t dma_desc, dma_buff;
+ struct netcp_packet p_info;
+ struct sk_buff *skb;
+ void *org_buf_ptr;
+
+ dma_desc = knav_queue_pop(netcp->rx_queue, &dma_sz);
+ if (!dma_desc)
+ return -1;
+
+ desc = knav_pool_desc_unmap(netcp->rx_pool, dma_desc, dma_sz);
+ if (unlikely(!desc)) {
+ dev_err(netcp->ndev_dev, "failed to unmap Rx desc\n");
+ return 0;
+ }
+
+ if (netcp->big_endian) {
+ pkt_sz = be32_to_cpu(desc->desc_info);
+ buf_len = be32_to_cpu(desc->buff_len);
+ dma_buff = be32_to_cpu(desc->buff);
+ dma_desc = be32_to_cpu(desc->next_desc);
+ org_buf_ptr = (void *)be32_to_cpu(desc->pad[0]);
+ org_buf_len = be32_to_cpu(desc->pad[1]);
+ } else {
+ pkt_sz = le32_to_cpu(desc->desc_info);
+ buf_len = le32_to_cpu(desc->buff_len);
+ dma_buff = le32_to_cpu(desc->buff);
+ dma_desc = le32_to_cpu(desc->next_desc);
+ org_buf_ptr = (void *)le32_to_cpu(desc->pad[0]);
+ org_buf_len = le32_to_cpu(desc->pad[1]);
+ }
+
+ if (unlikely(!org_buf_ptr)) {
+ dev_err(netcp->ndev_dev, "NULL bufptr in desc\n");
+ goto free_desc;
+ }
+
+ pkt_sz &= KNAV_DMA_DESC_PKT_LEN_MASK;
+ accum_sz = buf_len;
+ dma_unmap_single(netcp->dev, dma_buff, buf_len, DMA_FROM_DEVICE);
+
+ /* Build a new sk_buff for the primary buffer */
+ skb = build_skb(org_buf_ptr, org_buf_len);
+ if (unlikely(!skb)) {
+ dev_err(netcp->ndev_dev, "build_skb() failed\n");
+ goto free_desc;
+ }
+
+ /* update data, tail and len */
+ skb_reserve(skb, NETCP_SOP_OFFSET);
+ __skb_put(skb, buf_len);
+
+ /* Fill in the page fragment list */
+ while (dma_desc) {
+ struct page *page;
+
+ ndesc = knav_pool_desc_unmap(netcp->rx_pool, dma_desc, dma_sz);
+ if (unlikely(!ndesc)) {
+ dev_err(netcp->ndev_dev, "failed to unmap Rx desc\n");
+ goto free_desc;
+ }
+
+ if (netcp->big_endian) {
+ dma_buff = be32_to_cpu(ndesc->buff);
+ buf_len = be32_to_cpu(ndesc->buff_len);
+ dma_desc = be32_to_cpu(ndesc->next_desc);
+ page = (void *)be32_to_cpu(ndesc->pad[0]);
+ } else {
+ dma_buff = le32_to_cpu(ndesc->buff);
+ buf_len = le32_to_cpu(ndesc->buff_len);
+ dma_desc = le32_to_cpu(ndesc->next_desc);
+ page = (void *)le32_to_cpu(ndesc->pad[0]);
+ }
+
+ if (likely(dma_buff && buf_len && page)) {
+ dma_unmap_page(netcp->dev, dma_buff, PAGE_SIZE,
+ DMA_FROM_DEVICE);
+ } else {
+ dev_err(netcp->ndev_dev, "Bad Rx desc dma_buff(%p), len(%d), page(%p)\n",
+ (void *)dma_buff, buf_len, page);
+ goto free_desc;
+ }
+
+ skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page,
+ offset_in_page(dma_buff), buf_len, PAGE_SIZE);
+ accum_sz += buf_len;
+
+ /* Free the descriptor */
+ knav_pool_desc_put(netcp->rx_pool, ndesc);
+ }
+
+ /* Free the primary descriptor */
+ knav_pool_desc_put(netcp->rx_pool, desc);
+
+ /* check for packet len and warn */
+ if (unlikely(pkt_sz != accum_sz))
+ dev_dbg(netcp->ndev_dev, "mismatch in packet size(%d) & sum of fragments(%d)\n",
+ pkt_sz, accum_sz);
+
+ /* Remove ethernet FCS from the packet */
+ __pskb_trim(skb, skb->len - ETH_FCS_LEN);
+
+ /* Call each of the RX hooks */
+ p_info.skb = skb;
+ p_info.rxtstamp_complete = false;
+ list_for_each_entry(rx_hook, &netcp->rxhook_list_head, list) {
+ int ret;
+
+ ret = rx_hook->hook_rtn(rx_hook->order, rx_hook->hook_data,
+ &p_info);
+ if (unlikely(ret)) {
+ dev_err(netcp->ndev_dev, "RX hook %d failed: %d\n",
+ rx_hook->order, ret);
+ netcp->ndev->stats.rx_errors++;
+ dev_kfree_skb(skb);
+ return 0;
+ }
+ }
+
+ netcp->ndev->last_rx = jiffies;
+ netcp->ndev->stats.rx_packets++;
+ netcp->ndev->stats.rx_bytes += skb->len;
+
+ /* push skb up the stack */
+ skb->protocol = eth_type_trans(skb, netcp->ndev);
+ netif_receive_skb(skb);
+ return 0;
+
+free_desc:
+ netcp_free_rx_desc_chain(netcp, desc);
+ netcp->ndev->stats.rx_errors++;
+ return 0;
+}
+
+static inline int netcp_process_rx_packets(struct netcp_intf *netcp,
+ unsigned budget)
+{
+ int i;
+
+ for (i = 0; (i < budget) && !netcp_process_one_rx_packet(netcp); i++)
+ ;
+ return i;
+}
+
+/* Release descriptors and attached buffers from Rx FDQ */
+static inline void netcp_free_rx_buf(struct netcp_intf *netcp, int fdq)
+{
+ struct knav_dma_desc *desc;
+ unsigned int buf_len, dma_sz;
+ dma_addr_t dma;
+ void *buf_ptr;
+
+ /* Allocate descriptor */
+ while ((dma = knav_queue_pop(netcp->rx_fdq[fdq], &dma_sz))) {
+ desc = knav_pool_desc_unmap(netcp->rx_pool, dma, dma_sz);
+ if (unlikely(!desc)) {
+ dev_err(netcp->ndev_dev, "failed to unmap Rx desc\n");
+ continue;
+ }
+
+ if (netcp->big_endian) {
+ dma = be32_to_cpu(desc->orig_buff);
+ buf_len = be32_to_cpu(desc->orig_len);
+ buf_ptr = (void *)be32_to_cpu(desc->pad[0]);
+ } else {
+ dma = le32_to_cpu(desc->orig_buff);
+ buf_len = le32_to_cpu(desc->orig_len);
+ buf_ptr = (void *)le32_to_cpu(desc->pad[0]);
+ }
+
+ if (unlikely(!dma)) {
+ dev_err(netcp->ndev_dev, "NULL orig_buff in desc\n");
+ knav_pool_desc_put(netcp->rx_pool, desc);
+ continue;
+ }
+
+ if (unlikely(!buf_ptr)) {
+ dev_err(netcp->ndev_dev, "NULL bufptr in desc\n");
+ knav_pool_desc_put(netcp->rx_pool, desc);
+ continue;
+ }
+
+ if (fdq == 0) {
+ dma_unmap_single(netcp->dev, dma, buf_len,
+ DMA_FROM_DEVICE);
+ netcp_frag_free((buf_len <= PAGE_SIZE), buf_ptr);
+ } else {
+ dma_unmap_page(netcp->dev, dma, buf_len,
+ DMA_FROM_DEVICE);
+ __free_page(buf_ptr);
+ }
+
+ knav_pool_desc_put(netcp->rx_pool, desc);
+ }
+}
+
+static void netcp_rxpool_free(struct netcp_intf *netcp)
+{
+ int i;
+
+ for (i = 0; i < KNAV_DMA_FDQ_PER_CHAN &&
+ !IS_ERR_OR_NULL(netcp->rx_fdq[i]); i++)
+ netcp_free_rx_buf(netcp, i);
+
+ if (knav_pool_count(netcp->rx_pool) != netcp->rx_pool_size)
+ dev_err(netcp->ndev_dev, "Lost Rx (%d) descriptors\n",
+ netcp->rx_pool_size - knav_pool_count(netcp->rx_pool));
+
+ knav_pool_destroy(netcp->rx_pool);
+ netcp->rx_pool = NULL;
+}
+
+static inline void netcp_allocate_rx_buf(struct netcp_intf *netcp, int fdq)
+{
+ struct knav_dma_desc *hwdesc;
+ unsigned int buf_len, dma_sz;
+ u32 desc_info, pkt_info;
+ struct page *page;
+ dma_addr_t dma;
+ void *bufptr;
+ u32 pad[2];
+
+ /* Allocate descriptor */
+ hwdesc = knav_pool_desc_get(netcp->rx_pool);
+ if (IS_ERR_OR_NULL(hwdesc)) {
+ dev_dbg(netcp->ndev_dev, "out of rx pool desc\n");
+ return;
+ }
+
+ if (likely(fdq == 0)) {
+ unsigned int primary_buf_len;
+ /* Allocate a primary receive queue entry */
+ buf_len = netcp->rx_buffer_sizes[0] + NETCP_SOP_OFFSET;
+ primary_buf_len = SKB_DATA_ALIGN(buf_len) +
+ SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
+
+ if (primary_buf_len <= PAGE_SIZE) {
+ bufptr = netdev_alloc_frag(primary_buf_len);
+ pad[1] = primary_buf_len;
+ } else {
+ bufptr = kmalloc(primary_buf_len, GFP_ATOMIC |
+ GFP_DMA32 | __GFP_COLD);
+ pad[1] = 0;
+ }
+
+ if (unlikely(!bufptr)) {
+ dev_warn_ratelimited(netcp->ndev_dev, "Primary RX buffer alloc failed\n");
+ goto fail;
+ }
+ dma = dma_map_single(netcp->dev, bufptr, buf_len,
+ DMA_TO_DEVICE);
+ pad[0] = (u32)bufptr;
+
+ } else {
+ /* Allocate a secondary receive queue entry */
+ page = alloc_page(GFP_ATOMIC | GFP_DMA32 | __GFP_COLD);
+ if (unlikely(!page)) {
+ dev_warn_ratelimited(netcp->ndev_dev, "Secondary page alloc failed\n");
+ goto fail;
+ }
+ buf_len = PAGE_SIZE;
+ dma = dma_map_page(netcp->dev, page, 0, buf_len, DMA_TO_DEVICE);
+ pad[0] = (u32)page;
+ pad[1] = 0;
+ }
+
+ desc_info = KNAV_DMA_DESC_PS_INFO_IN_DESC;
+ desc_info |= buf_len & KNAV_DMA_DESC_PKT_LEN_MASK;
+ pkt_info = KNAV_DMA_DESC_HAS_EPIB;
+ pkt_info |= KNAV_DMA_NUM_PS_WORDS << KNAV_DMA_DESC_PSLEN_SHIFT;
+ pkt_info |= (netcp->rx_queue_id & KNAV_DMA_DESC_RETQ_MASK) <<
+ KNAV_DMA_DESC_RETQ_SHIFT;
+
+ if (unlikely(netcp->big_endian)) {
+ hwdesc->desc_info = cpu_to_be32(desc_info);
+ hwdesc->packet_info = cpu_to_be32(pkt_info);
+ hwdesc->orig_len = cpu_to_be32(buf_len);
+ hwdesc->orig_buff = cpu_to_be32(dma);
+ hwdesc->pad[0] = cpu_to_be32(pad[0]);
+ hwdesc->pad[1] = cpu_to_be32(pad[1]);
+ } else {
+ hwdesc->desc_info = cpu_to_le32(desc_info);
+ hwdesc->packet_info = cpu_to_le32(pkt_info);
+ hwdesc->orig_len = cpu_to_le32(buf_len);
+ hwdesc->orig_buff = cpu_to_le32(dma);
+ hwdesc->pad[0] = cpu_to_le32(pad[0]);
+ hwdesc->pad[1] = cpu_to_le32(pad[1]);
+ }
+
+ /* Push to FDQs */
+ knav_pool_desc_map(netcp->rx_pool, hwdesc, sizeof(*hwdesc), &dma,
+ &dma_sz);
+ knav_queue_push(netcp->rx_fdq[fdq], dma, sizeof(*hwdesc), 0);
+ return;
+
+fail:
+ knav_pool_desc_put(netcp->rx_pool, hwdesc);
+}
+
+/* Refill Rx FDQ with descriptors & attached buffers */
+static inline void netcp_rxpool_refill(struct netcp_intf *netcp)
+{
+ u32 fdq_deficit[KNAV_DMA_FDQ_PER_CHAN] = {0};
+ int i;
+
+ /* Calculate the FDQ deficit and refill */
+ for (i = 0; i < KNAV_DMA_FDQ_PER_CHAN && netcp->rx_fdq[i]; i++) {
+ fdq_deficit[i] = netcp->rx_queue_depths[i] -
+ knav_queue_get_count(netcp->rx_fdq[i]);
+
+ while (fdq_deficit[i]--)
+ netcp_allocate_rx_buf(netcp, i);
+ } /* end for fdqs */
+}
+
+/* NAPI poll */
+static int netcp_rx_poll(struct napi_struct *napi, int budget)
+{
+ struct netcp_intf *netcp = container_of(napi, struct netcp_intf,
+ rx_napi);
+ unsigned packets;
+
+ packets = netcp_process_rx_packets(netcp, budget);
+
+ if (packets < budget) {
+ napi_complete(&netcp->rx_napi);
+ knav_queue_enable_notify(netcp->rx_queue);
+ }
+
+ netcp_rxpool_refill(netcp);
+ return packets;
+}
+
+static void netcp_rx_notify(void *arg)
+{
+ struct netcp_intf *netcp = arg;
+
+ knav_queue_disable_notify(netcp->rx_queue);
+ napi_schedule(&netcp->rx_napi);
+}
+
+static inline void netcp_free_tx_desc_chain(struct netcp_intf *netcp,
+ struct knav_dma_desc *desc,
+ unsigned desc_sz)
+{
+ struct knav_dma_desc *ndesc = desc;
+ dma_addr_t dma_desc, dma_buf;
+ unsigned buf_len;
+
+ while (ndesc) {
+ if (netcp->big_endian) {
+ dma_buf = cpu_to_be32(ndesc->buff);
+ buf_len = cpu_to_be32(ndesc->buff_len);
+ dma_desc = cpu_to_be32(ndesc->next_desc);
+ } else {
+ dma_buf = cpu_to_le32(ndesc->buff);
+ buf_len = cpu_to_le32(ndesc->buff_len);
+ dma_desc = cpu_to_le32(ndesc->next_desc);
+ }
+
+ if (dma_buf && buf_len)
+ dma_unmap_single(netcp->dev, dma_buf, buf_len,
+ DMA_TO_DEVICE);
+ else
+ dev_warn(netcp->ndev_dev, "bad Tx desc buf(%p), len(%d)\n",
+ (void *)dma_buf, buf_len);
+
+ knav_pool_desc_put(netcp->tx_pool, ndesc);
+ ndesc = NULL;
+ if (dma_desc) {
+ ndesc = knav_pool_desc_unmap(netcp->tx_pool, dma_desc,
+ desc_sz);
+ if (!ndesc)
+ dev_err(netcp->ndev_dev, "failed to unmap Tx desc\n");
+ }
+ }
+}
+
+static inline int netcp_process_tx_compl_packets(struct netcp_intf *netcp,
+ unsigned budget)
+{
+ struct knav_dma_desc *desc;
+ struct sk_buff *skb;
+ unsigned dma_sz;
+ dma_addr_t dma;
+ int pkts = 0;
+
+ while (budget--) {
+ dma = knav_queue_pop(netcp->tx_compl_q, &dma_sz);
+ if (!dma)
+ break;
+ desc = knav_pool_desc_unmap(netcp->tx_pool, dma, dma_sz);
+ if (unlikely(!desc)) {
+ dev_err(netcp->ndev_dev, "failed to unmap Tx desc\n");
+ netcp->ndev->stats.tx_errors++;
+ continue;
+ }
+ skb = (void *)hwval_to_host(netcp->big_endian, desc->pad[0]);
+ netcp_free_tx_desc_chain(netcp, desc, dma_sz);
+ if (!skb) {
+ dev_err(netcp->ndev_dev, "No skb in Tx desc\n");
+ netcp->ndev->stats.tx_errors++;
+ continue;
+ }
+
+ if (netif_subqueue_stopped(netcp->ndev, skb) &&
+ netif_running(netcp->ndev) &&
+ (knav_pool_count(netcp->tx_pool) >
+ netcp->tx_resume_threshold)) {
+ u16 subqueue = skb_get_queue_mapping(skb);
+
+ netif_wake_subqueue(netcp->ndev, subqueue);
+ }
+
+ netcp->ndev->stats.tx_packets++;
+ netcp->ndev->stats.tx_bytes += skb->len;
+ dev_kfree_skb(skb);
+ pkts++;
+ }
+ return pkts;
+}
+
+static int netcp_tx_poll(struct napi_struct *napi, int budget)
+{
+ int packets;
+ struct netcp_intf *netcp = container_of(napi, struct netcp_intf,
+ tx_napi);
+
+ packets = netcp_process_tx_compl_packets(netcp, budget);
+ if (packets < budget) {
+ napi_complete(&netcp->tx_napi);
+ knav_queue_enable_notify(netcp->tx_compl_q);
+ }
+
+ return packets;
+}
+
+static void netcp_tx_notify(void *arg)
+{
+ struct netcp_intf *netcp = arg;
+
+ knav_queue_disable_notify(netcp->tx_compl_q);
+ napi_schedule(&netcp->tx_napi);
+}
+
+static inline struct knav_dma_desc*
+netcp_tx_map_skb(struct sk_buff *skb, struct netcp_intf *netcp)
+{
+ struct knav_dma_desc *desc, *ndesc, *pdesc;
+ unsigned int pkt_len = skb_headlen(skb);
+ struct device *dev = netcp->dev;
+ dma_addr_t dma_addr;
+ unsigned dma_sz;
+ int i;
+
+ /* Map the linear buffer */
+ dma_addr = dma_map_single(dev, skb->data, pkt_len, DMA_TO_DEVICE);
+ if (unlikely(!dma_addr)) {
+ dev_err(netcp->ndev_dev, "Failed to map skb buffer\n");
+ return NULL;
+ }
+
+ desc = knav_pool_desc_get(netcp->tx_pool);
+ if (unlikely(IS_ERR_OR_NULL(desc))) {
+ dev_err(netcp->ndev_dev, "out of TX desc\n");
+ dma_unmap_single(dev, dma_addr, pkt_len, DMA_TO_DEVICE);
+ return NULL;
+ }
+
+ if (netcp->big_endian) {
+ desc->buff = cpu_to_be32(dma_addr);
+ desc->buff_len = cpu_to_be32(pkt_len);
+ desc->next_desc = 0;
+ } else {
+ desc->buff = cpu_to_le32(dma_addr);
+ desc->buff_len = cpu_to_le32(pkt_len);
+ desc->next_desc = 0;
+ }
+
+ if (skb_is_nonlinear(skb)) {
+ prefetchw(skb_shinfo(skb));
+ } else {
+ desc->next_desc = 0;
+ goto upd_pkt_len;
+ }
+
+ pdesc = desc;
+
+ /* Handle the case where skb is fragmented in pages */
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+ skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+ struct page *page = skb_frag_page(frag);
+ u32 page_offset = frag->page_offset;
+ u32 buf_len = skb_frag_size(frag);
+ dma_addr_t desc_dma;
+ u32 pkt_info;
+
+ dma_addr = dma_map_page(dev, page, page_offset, buf_len,
+ DMA_TO_DEVICE);
+ if (unlikely(!dma_addr)) {
+ dev_err(netcp->ndev_dev, "Failed to map skb page\n");
+ goto free_descs;
+ }
+
+ ndesc = knav_pool_desc_get(netcp->tx_pool);
+ if (unlikely(IS_ERR_OR_NULL(ndesc))) {
+ dev_err(netcp->ndev_dev, "out of TX desc for frags\n");
+ dma_unmap_page(dev, dma_addr, buf_len, DMA_TO_DEVICE);
+ goto free_descs;
+ }
+
+ desc_dma = knav_pool_desc_virt_to_dma(netcp->tx_pool,
+ (void *)ndesc);
+
+ pkt_info =
+ (netcp->tx_compl_qid & KNAV_DMA_DESC_RETQ_MASK) <<
+ KNAV_DMA_DESC_RETQ_SHIFT;
+
+ if (unlikely(netcp->big_endian)) {
+ ndesc->buff = cpu_to_be32(dma_addr);
+ ndesc->buff_len = cpu_to_be32(buf_len);
+ ndesc->packet_info = cpu_to_be32(pkt_info);
+ ndesc->next_desc = 0;
+ pdesc->next_desc = cpu_to_be32(desc_dma);
+ } else {
+ ndesc->buff = cpu_to_le32(dma_addr);
+ ndesc->buff_len = cpu_to_le32(buf_len);
+ ndesc->packet_info = cpu_to_le32(pkt_info);
+ ndesc->next_desc = 0;
+ pdesc->next_desc = cpu_to_le32(desc_dma);
+ }
+
+ pkt_len += buf_len;
+ if (pdesc != desc)
+ knav_pool_desc_map(netcp->tx_pool, pdesc,
+ sizeof(*pdesc), &desc_dma, &dma_sz);
+ pdesc = ndesc;
+ }
+ if (pdesc != desc)
+ knav_pool_desc_map(netcp->tx_pool, pdesc, sizeof(*pdesc),
+ &dma_addr, &dma_sz);
+
+ /* frag list based linkage is not supported for now. */
+ if (skb_shinfo(skb)->frag_list) {
+ dev_err_ratelimited(netcp->ndev_dev, "NETIF_F_FRAGLIST not supported\n");
+ goto free_descs;
+ }
+
+upd_pkt_len:
+ WARN_ON(pkt_len != skb->len);
+
+ pkt_len &= KNAV_DMA_DESC_PKT_LEN_MASK;
+ if (netcp->big_endian)
+ desc->desc_info = cpu_to_be32(pkt_len);
+ else
+ desc->desc_info = cpu_to_le32(pkt_len);
+
+ return desc;
+
+free_descs:
+ netcp_free_tx_desc_chain(netcp, desc, sizeof(*desc));
+ return NULL;
+}
+
+static inline int netcp_tx_submit_skb(struct netcp_intf *netcp,
+ struct sk_buff *skb,
+ struct knav_dma_desc *desc)
+{
+ struct netcp_tx_pipe *tx_pipe = NULL;
+ struct netcp_hook_list *tx_hook;
+ struct netcp_packet p_info;
+ u32 packet_info = 0;
+ unsigned dma_sz;
+ dma_addr_t dma;
+ int i, ret = 0;
+
+ p_info.netcp = netcp;
+ p_info.skb = skb;
+ p_info.tx_pipe = NULL;
+ p_info.psdata_len = 0;
+ p_info.ts_context = NULL;
+ p_info.txtstamp_complete = NULL;
+ p_info.epib = desc->epib;
+ p_info.psdata = desc->psdata;
+ memset(p_info.epib, 0, KNAV_DMA_NUM_EPIB_WORDS * sizeof(u32));
+
+ /* Find out where to inject the packet for transmission */
+ list_for_each_entry(tx_hook, &netcp->txhook_list_head, list) {
+ ret = tx_hook->hook_rtn(tx_hook->order, tx_hook->hook_data,
+ &p_info);
+ if (unlikely(ret != 0)) {
+ dev_err(netcp->ndev_dev, "TX hook %d rejected the packet with reason(%d)\n",
+ tx_hook->order, ret);
+ ret = (ret < 0) ? ret : NETDEV_TX_OK;
+ goto out;
+ }
+ }
+
+ /* Make sure some TX hook claimed the packet */
+ tx_pipe = p_info.tx_pipe;
+ if (tx_pipe == NULL) {
+ dev_err(netcp->ndev_dev, "No TX hook claimed the packet!\n");
+ ret = -ENXIO;
+ goto out;
+ }
+
+ /* update descriptor */
+ if (p_info.psdata_len) {
+ u32 *psdata = p_info.psdata;
+
+ memmove(p_info.psdata, p_info.psdata + p_info.psdata_len,
+ p_info.psdata_len);
+
+ if (netcp->big_endian) {
+ for (i = 0; i < p_info.psdata_len; i++, psdata++)
+ *psdata = cpu_to_be32(*psdata);
+ } else {
+ for (i = 0; i < p_info.psdata_len; i++, psdata++)
+ *psdata = cpu_to_le32(*psdata);
+ }
+ packet_info |=
+ (p_info.psdata_len & KNAV_DMA_DESC_PSLEN_MASK) <<
+ KNAV_DMA_DESC_PSLEN_SHIFT;
+ }
+
+ packet_info |= KNAV_DMA_DESC_HAS_EPIB |
+ ((netcp->tx_compl_qid & KNAV_DMA_DESC_RETQ_MASK) <<
+ KNAV_DMA_DESC_RETQ_SHIFT) |
+ ((tx_pipe->dma_psflags & KNAV_DMA_DESC_PSFLAG_MASK) <<
+ KNAV_DMA_DESC_PSFLAG_SHIFT);
+
+ if (netcp->big_endian) {
+ desc->packet_info = cpu_to_be32(packet_info);
+ desc->pad[0] = cpu_to_be32((u32)skb);
+ } else {
+ desc->packet_info = cpu_to_le32(packet_info);
+ desc->pad[0] = cpu_to_le32((u32)skb);
+ }
+
+ /* submit packet descriptor */
+ ret = knav_pool_desc_map(netcp->tx_pool, desc, sizeof(*desc), &dma,
+ &dma_sz);
+ if (unlikely(ret)) {
+ dev_err(netcp->ndev_dev, "%s() failed to map desc\n", __func__);
+ ret = -ENOMEM;
+ goto out;
+ }
+ skb_tx_timestamp(skb);
+ knav_queue_push(tx_pipe->dma_queue, dma, dma_sz, 0);
+
+out:
+ return ret;
+}
+
+/* Submit the packet */
+static int netcp_ndo_start_xmit(struct sk_buff *skb, struct net_device *ndev)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ int subqueue = skb_get_queue_mapping(skb);
+ struct knav_dma_desc *desc;
+ int desc_count, ret = 0;
+
+ if (unlikely(skb->len <= 0)) {
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+
+ if (unlikely(skb->len < NETCP_MIN_PACKET_SIZE)) {
+ ret = skb_padto(skb, NETCP_MIN_PACKET_SIZE);
+ if (ret < 0) {
+ /* If we get here, the skb has already been dropped */
+ dev_warn(netcp->ndev_dev, "padding failed (%d), packet dropped\n",
+ ret);
+ ndev->stats.tx_dropped++;
+ return ret;
+ }
+ skb->len = NETCP_MIN_PACKET_SIZE;
+ }
+
+ desc = netcp_tx_map_skb(skb, netcp);
+ if (unlikely(!desc)) {
+ netif_stop_subqueue(ndev, subqueue);
+ ret = -ENOBUFS;
+ goto drop;
+ }
+
+ ret = netcp_tx_submit_skb(netcp, skb, desc);
+ if (ret)
+ goto drop;
+
+ ndev->trans_start = jiffies;
+
+ /* Check Tx pool count & stop subqueue if needed */
+ desc_count = knav_pool_count(netcp->tx_pool);
+ if (desc_count < netcp->tx_pause_threshold) {
+ dev_dbg(netcp->ndev_dev, "pausing tx, count(%d)\n", desc_count);
+ netif_stop_subqueue(ndev, subqueue);
+ }
+ return NETDEV_TX_OK;
+
+drop:
+ ndev->stats.tx_dropped++;
+ if (desc)
+ netcp_free_tx_desc_chain(netcp, desc, sizeof(*desc));
+ dev_kfree_skb(skb);
+ return ret;
+}
+
+int netcp_txpipe_close(struct netcp_tx_pipe *tx_pipe)
+{
+ if (tx_pipe->dma_channel) {
+ knav_dma_close_channel(tx_pipe->dma_channel);
+ tx_pipe->dma_channel = NULL;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(netcp_txpipe_close);
+
+int netcp_txpipe_open(struct netcp_tx_pipe *tx_pipe)
+{
+ struct device *dev = tx_pipe->netcp_device->device;
+ unsigned dma_id = tx_pipe->netcp_device->dma_id;
+ struct knav_dma_cfg config;
+ int ret = 0;
+ u8 name[16];
+
+ memset(&config, 0, sizeof(config));
+ config.direction = DMA_MEM_TO_DEV;
+ config.chan_num = tx_pipe->dma_chan_id;
+ config.u.tx.filt_einfo = false;
+ config.u.tx.filt_pswords = false;
+ config.u.tx.priority = DMA_PRIO_MED_L;
+
+ tx_pipe->dma_channel = knav_dma_open_channel(dma_id, &config);
+ if (IS_ERR_OR_NULL(tx_pipe->dma_channel)) {
+ dev_err(dev, "failed opening tx chan(%d)\n",
+ tx_pipe->dma_chan_id);
+ goto err;
+ }
+
+ snprintf(name, sizeof(name), "tx-pipe-%s", dev_name(dev));
+ tx_pipe->dma_queue = knav_queue_open(name, tx_pipe->dma_queue_id,
+ KNAV_QUEUE_SHARED);
+ if (IS_ERR(tx_pipe->dma_queue)) {
+ dev_err(dev, "Could not open DMA queue for channel \"%s\": %d\n",
+ name, ret);
+ ret = PTR_ERR(tx_pipe->dma_queue);
+ goto err;
+ }
+
+ dev_dbg(dev, "opened tx pipe %s\n", name);
+ return 0;
+
+err:
+ if (!IS_ERR_OR_NULL(tx_pipe->dma_channel))
+ knav_dma_close_channel(tx_pipe->dma_channel);
+ tx_pipe->dma_channel = NULL;
+ return ret;
+}
+EXPORT_SYMBOL_GPL(netcp_txpipe_open);
+
+int netcp_txpipe_init(struct netcp_tx_pipe *tx_pipe,
+ struct netcp_device *netcp_device,
+ unsigned dma_chan_id, unsigned dma_queue_id)
+{
+ memset(tx_pipe, 0, sizeof(*tx_pipe));
+ tx_pipe->netcp_device = netcp_device;
+ tx_pipe->dma_chan_id = dma_chan_id;
+ tx_pipe->dma_queue_id = dma_queue_id;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(netcp_txpipe_init);
+
+static struct netcp_addr *netcp_addr_find(struct netcp_intf *netcp,
+ const u8 *addr,
+ enum netcp_addr_type type)
+{
+ struct netcp_addr *naddr;
+
+ list_for_each_entry(naddr, &netcp->addr_list, node) {
+ if (naddr->type != type)
+ continue;
+ if (addr && memcmp(addr, naddr->addr, ETH_ALEN))
+ continue;
+ return naddr;
+ }
+
+ return NULL;
+}
+
+static struct netcp_addr *netcp_addr_add(struct netcp_intf *netcp,
+ const u8 *addr,
+ enum netcp_addr_type type)
+{
+ struct netcp_addr *naddr;
+
+ naddr = devm_kmalloc(netcp->dev, sizeof(*naddr), GFP_ATOMIC);
+ if (!naddr)
+ return NULL;
+
+ naddr->type = type;
+ naddr->flags = 0;
+ naddr->netcp = netcp;
+ if (addr)
+ ether_addr_copy(naddr->addr, addr);
+ else
+ memset(naddr->addr, 0, ETH_ALEN);
+ list_add_tail(&naddr->node, &netcp->addr_list);
+
+ return naddr;
+}
+
+static void netcp_addr_del(struct netcp_intf *netcp, struct netcp_addr *naddr)
+{
+ list_del(&naddr->node);
+ devm_kfree(netcp->dev, naddr);
+}
+
+static void netcp_addr_clear_mark(struct netcp_intf *netcp)
+{
+ struct netcp_addr *naddr;
+
+ list_for_each_entry(naddr, &netcp->addr_list, node)
+ naddr->flags = 0;
+}
+
+static void netcp_addr_add_mark(struct netcp_intf *netcp, const u8 *addr,
+ enum netcp_addr_type type)
+{
+ struct netcp_addr *naddr;
+
+ naddr = netcp_addr_find(netcp, addr, type);
+ if (naddr) {
+ naddr->flags |= ADDR_VALID;
+ return;
+ }
+
+ naddr = netcp_addr_add(netcp, addr, type);
+ if (!WARN_ON(!naddr))
+ naddr->flags |= ADDR_NEW;
+}
+
+static void netcp_addr_sweep_del(struct netcp_intf *netcp)
+{
+ struct netcp_addr *naddr, *tmp;
+ struct netcp_intf_modpriv *priv;
+ struct netcp_module *module;
+ int error;
+
+ list_for_each_entry_safe(naddr, tmp, &netcp->addr_list, node) {
+ if (naddr->flags & (ADDR_VALID | ADDR_NEW))
+ continue;
+ dev_dbg(netcp->ndev_dev, "deleting address %pM, type %x\n",
+ naddr->addr, naddr->type);
+ mutex_lock(&netcp_modules_lock);
+ for_each_module(netcp, priv) {
+ module = priv->netcp_module;
+ if (!module->del_addr)
+ continue;
+ error = module->del_addr(priv->module_priv,
+ naddr);
+ WARN_ON(error);
+ }
+ mutex_unlock(&netcp_modules_lock);
+ netcp_addr_del(netcp, naddr);
+ }
+}
+
+static void netcp_addr_sweep_add(struct netcp_intf *netcp)
+{
+ struct netcp_addr *naddr, *tmp;
+ struct netcp_intf_modpriv *priv;
+ struct netcp_module *module;
+ int error;
+
+ list_for_each_entry_safe(naddr, tmp, &netcp->addr_list, node) {
+ if (!(naddr->flags & ADDR_NEW))
+ continue;
+ dev_dbg(netcp->ndev_dev, "adding address %pM, type %x\n",
+ naddr->addr, naddr->type);
+ mutex_lock(&netcp_modules_lock);
+ for_each_module(netcp, priv) {
+ module = priv->netcp_module;
+ if (!module->add_addr)
+ continue;
+ error = module->add_addr(priv->module_priv, naddr);
+ WARN_ON(error);
+ }
+ mutex_unlock(&netcp_modules_lock);
+ }
+}
+
+static void netcp_set_rx_mode(struct net_device *ndev)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ struct netdev_hw_addr *ndev_addr;
+ bool promisc;
+
+ promisc = (ndev->flags & IFF_PROMISC ||
+ ndev->flags & IFF_ALLMULTI ||
+ netdev_mc_count(ndev) > NETCP_MAX_MCAST_ADDR);
+
+ /* first clear all marks */
+ netcp_addr_clear_mark(netcp);
+
+ /* next add new entries, mark existing ones */
+ netcp_addr_add_mark(netcp, ndev->broadcast, ADDR_BCAST);
+ for_each_dev_addr(ndev, ndev_addr)
+ netcp_addr_add_mark(netcp, ndev_addr->addr, ADDR_DEV);
+ netdev_for_each_uc_addr(ndev_addr, ndev)
+ netcp_addr_add_mark(netcp, ndev_addr->addr, ADDR_UCAST);
+ netdev_for_each_mc_addr(ndev_addr, ndev)
+ netcp_addr_add_mark(netcp, ndev_addr->addr, ADDR_MCAST);
+
+ if (promisc)
+ netcp_addr_add_mark(netcp, NULL, ADDR_ANY);
+
+ /* finally sweep and callout into modules */
+ netcp_addr_sweep_del(netcp);
+ netcp_addr_sweep_add(netcp);
+}
+
+static void netcp_free_navigator_resources(struct netcp_intf *netcp)
+{
+ int i;
+
+ if (netcp->rx_channel) {
+ knav_dma_close_channel(netcp->rx_channel);
+ netcp->rx_channel = NULL;
+ }
+
+ if (!IS_ERR_OR_NULL(netcp->rx_pool))
+ netcp_rxpool_free(netcp);
+
+ if (!IS_ERR_OR_NULL(netcp->rx_queue)) {
+ knav_queue_close(netcp->rx_queue);
+ netcp->rx_queue = NULL;
+ }
+
+ for (i = 0; i < KNAV_DMA_FDQ_PER_CHAN &&
+ !IS_ERR_OR_NULL(netcp->rx_fdq[i]) ; ++i) {
+ knav_queue_close(netcp->rx_fdq[i]);
+ netcp->rx_fdq[i] = NULL;
+ }
+
+ if (!IS_ERR_OR_NULL(netcp->tx_compl_q)) {
+ knav_queue_close(netcp->tx_compl_q);
+ netcp->tx_compl_q = NULL;
+ }
+
+ if (!IS_ERR_OR_NULL(netcp->tx_pool)) {
+ knav_pool_destroy(netcp->tx_pool);
+ netcp->tx_pool = NULL;
+ }
+}
+
+static int netcp_setup_navigator_resources(struct net_device *ndev)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ struct knav_queue_notify_config notify_cfg;
+ struct knav_dma_cfg config;
+ unsigned dma_id = netcp->netcp_device->dma_id;
+ u32 last_fdq = 0;
+ u8 name[16];
+ int ret;
+ int i;
+
+ /* Create Rx/Tx descriptor pools */
+ snprintf(name, sizeof(name), "rx-pool-%s", ndev->name);
+ netcp->rx_pool = knav_pool_create(name, netcp->rx_pool_size,
+ netcp->rx_pool_region_id);
+ if (IS_ERR_OR_NULL(netcp->rx_pool)) {
+ dev_err(netcp->ndev_dev, "Couldn't create rx pool\n");
+ ret = PTR_ERR(netcp->rx_pool);
+ goto fail;
+ }
+
+ snprintf(name, sizeof(name), "tx-pool-%s", ndev->name);
+ netcp->tx_pool = knav_pool_create(name, netcp->tx_pool_size,
+ netcp->tx_pool_region_id);
+ if (IS_ERR_OR_NULL(netcp->tx_pool)) {
+ dev_err(netcp->ndev_dev, "Couldn't create tx pool\n");
+ ret = PTR_ERR(netcp->tx_pool);
+ goto fail;
+ }
+
+ /* open Tx completion queue */
+ snprintf(name, sizeof(name), "tx-compl-%s", ndev->name);
+ netcp->tx_compl_q = knav_queue_open(name, netcp->tx_compl_qid, 0);
+ if (IS_ERR_OR_NULL(netcp->tx_compl_q)) {
+ ret = PTR_ERR(netcp->tx_compl_q);
+ goto fail;
+ }
+ netcp->tx_compl_qid = knav_queue_get_id(netcp->tx_compl_q);
+
+ /* Set notification for Tx completion */
+ notify_cfg.fn = netcp_tx_notify;
+ notify_cfg.fn_arg = netcp;
+ ret = knav_queue_device_control(netcp->tx_compl_q,
+ KNAV_QUEUE_SET_NOTIFIER,
+ (unsigned long) &notify_cfg);
+ if (ret)
+ goto fail;
+
+ knav_queue_disable_notify(netcp->tx_compl_q);
+
+ /* open Rx completion queue */
+ snprintf(name, sizeof(name), "rx-compl-%s", ndev->name);
+ netcp->rx_queue = knav_queue_open(name, netcp->rx_queue_id, 0);
+ if (IS_ERR_OR_NULL(netcp->rx_queue)) {
+ ret = PTR_ERR(netcp->rx_queue);
+ goto fail;
+ }
+ netcp->rx_queue_id = knav_queue_get_id(netcp->rx_queue);
+
+ /* Set notification for Rx completion */
+ notify_cfg.fn = netcp_rx_notify;
+ notify_cfg.fn_arg = netcp;
+ ret = knav_queue_device_control(netcp->rx_queue,
+ KNAV_QUEUE_SET_NOTIFIER,
+ (unsigned long) &notify_cfg);
+ if (ret)
+ goto fail;
+
+ knav_queue_disable_notify(netcp->rx_queue);
+
+ /* open Rx FDQs */
+ for (i = 0; i < KNAV_DMA_FDQ_PER_CHAN &&
+ netcp->rx_queue_depths[i] && netcp->rx_buffer_sizes[i]; ++i) {
+ snprintf(name, sizeof(name), "rx-fdq-%s-%d", ndev->name, i);
+ netcp->rx_fdq[i] = knav_queue_open(name, KNAV_QUEUE_GP, 0);
+ if (IS_ERR_OR_NULL(netcp->rx_fdq[i])) {
+ ret = PTR_ERR(netcp->rx_fdq[i]);
+ goto fail;
+ }
+ }
+
+ memset(&config, 0, sizeof(config));
+ config.direction = DMA_DEV_TO_MEM;
+ config.chan_num = netcp->dma_chan_id;
+ config.u.rx.einfo_present = true;
+ config.u.rx.psinfo_present = true;
+ config.u.rx.err_mode = DMA_DROP;
+ config.u.rx.desc_type = DMA_DESC_HOST;
+ config.u.rx.psinfo_at_sop = false;
+ config.u.rx.sop_offset = NETCP_SOP_OFFSET;
+ config.u.rx.dst_q = netcp->rx_queue_id;
+ config.u.rx.thresh = DMA_THRESH_NONE;
+
+ for (i = 0; i < KNAV_DMA_FDQ_PER_CHAN; ++i) {
+ if (netcp->rx_fdq[i])
+ last_fdq = knav_queue_get_id(netcp->rx_fdq[i]);
+ config.u.rx.fdq[i] = last_fdq;
+ }
+
+ netcp->rx_channel = knav_dma_open_channel(dma_id, &config);
+ if (IS_ERR_OR_NULL(netcp->rx_channel)) {
+ dev_err(netcp->ndev_dev, "failed opening rx chan(%d)\n",
+ netcp->dma_chan_id);
+ goto fail;
+ }
+
+ dev_dbg(netcp->ndev_dev, "opened RX channel: %p\n", netcp->rx_channel);
+ return 0;
+
+fail:
+ netcp_free_navigator_resources(netcp);
+ return ret;
+}
+
+/* Open the device */
+static int netcp_ndo_open(struct net_device *ndev)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ struct netcp_intf_modpriv *intf_modpriv;
+ struct netcp_module *module;
+ int ret;
+
+ netif_carrier_off(ndev);
+ ret = netcp_setup_navigator_resources(ndev);
+ if (ret) {
+ dev_err(netcp->ndev_dev, "Failed to setup navigator resources\n");
+ goto fail;
+ }
+
+ mutex_lock(&netcp_modules_lock);
+ for_each_module(netcp, intf_modpriv) {
+ module = intf_modpriv->netcp_module;
+ if (module->open != NULL) {
+ ret = module->open(intf_modpriv->module_priv, ndev);
+ if (ret != 0) {
+ dev_err(netcp->ndev_dev, "module open failed\n");
+ goto fail_open;
+ }
+ }
+ }
+ mutex_unlock(&netcp_modules_lock);
+
+ netcp_rxpool_refill(netcp);
+ napi_enable(&netcp->rx_napi);
+ napi_enable(&netcp->tx_napi);
+ knav_queue_enable_notify(netcp->tx_compl_q);
+ knav_queue_enable_notify(netcp->rx_queue);
+ netif_tx_wake_all_queues(ndev);
+ dev_dbg(netcp->ndev_dev, "netcp device %s opened\n", ndev->name);
+ return 0;
+
+fail_open:
+ for_each_module(netcp, intf_modpriv) {
+ module = intf_modpriv->netcp_module;
+ if (module->close != NULL)
+ module->close(intf_modpriv->module_priv, ndev);
+ }
+ mutex_unlock(&netcp_modules_lock);
+
+fail:
+ netcp_free_navigator_resources(netcp);
+ return ret;
+}
+
+/* Close the device */
+static int netcp_ndo_stop(struct net_device *ndev)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ struct netcp_intf_modpriv *intf_modpriv;
+ struct netcp_module *module;
+ int err = 0;
+
+ netif_tx_stop_all_queues(ndev);
+ netif_carrier_off(ndev);
+ netcp_addr_clear_mark(netcp);
+ netcp_addr_sweep_del(netcp);
+ knav_queue_disable_notify(netcp->rx_queue);
+ knav_queue_disable_notify(netcp->tx_compl_q);
+ napi_disable(&netcp->rx_napi);
+ napi_disable(&netcp->tx_napi);
+
+ mutex_lock(&netcp_modules_lock);
+ for_each_module(netcp, intf_modpriv) {
+ module = intf_modpriv->netcp_module;
+ if (module->close != NULL) {
+ err = module->close(intf_modpriv->module_priv, ndev);
+ if (err != 0)
+ dev_err(netcp->ndev_dev, "Close failed\n");
+ }
+ }
+ mutex_unlock(&netcp_modules_lock);
+
+ /* Recycle Rx descriptors from completion queue */
+ netcp_empty_rx_queue(netcp);
+
+ /* Recycle Tx descriptors from completion queue */
+ netcp_process_tx_compl_packets(netcp, netcp->tx_pool_size);
+
+ if (knav_pool_count(netcp->tx_pool) != netcp->tx_pool_size)
+ dev_err(netcp->ndev_dev, "Lost (%d) Tx descs\n",
+ netcp->tx_pool_size - knav_pool_count(netcp->tx_pool));
+
+ netcp_free_navigator_resources(netcp);
+ dev_dbg(netcp->ndev_dev, "netcp device %s stopped\n", ndev->name);
+ return 0;
+}
+
+static int netcp_ndo_ioctl(struct net_device *ndev,
+ struct ifreq *req, int cmd)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ struct netcp_intf_modpriv *intf_modpriv;
+ struct netcp_module *module;
+ int ret = -1, err = -EOPNOTSUPP;
+
+ if (!netif_running(ndev))
+ return -EINVAL;
+
+ mutex_lock(&netcp_modules_lock);
+ for_each_module(netcp, intf_modpriv) {
+ module = intf_modpriv->netcp_module;
+ if (!module->ioctl)
+ continue;
+
+ err = module->ioctl(intf_modpriv->module_priv, req, cmd);
+ if ((err < 0) && (err != -EOPNOTSUPP)) {
+ ret = err;
+ goto out;
+ }
+ if (err == 0)
+ ret = err;
+ }
+
+out:
+ mutex_unlock(&netcp_modules_lock);
+ return (ret == 0) ? 0 : err;
+}
+
+static int netcp_ndo_change_mtu(struct net_device *ndev, int new_mtu)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+
+ /* MTU < 68 is an error for IPv4 traffic */
+ if ((new_mtu < 68) ||
+ (new_mtu > (NETCP_MAX_FRAME_SIZE - ETH_HLEN - ETH_FCS_LEN))) {
+ dev_err(netcp->ndev_dev, "Invalid mtu size = %d\n", new_mtu);
+ return -EINVAL;
+ }
+
+ ndev->mtu = new_mtu;
+ return 0;
+}
+
+static void netcp_ndo_tx_timeout(struct net_device *ndev)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ unsigned descs = knav_pool_count(netcp->tx_pool);
+
+ dev_err(netcp->ndev_dev, "transmit timed out tx descs(%d)\n", descs);
+ netcp_process_tx_compl_packets(netcp, netcp->tx_pool_size);
+ ndev->trans_start = jiffies;
+ netif_tx_wake_all_queues(ndev);
+}
+
+static int netcp_rx_add_vid(struct net_device *ndev, __be16 proto, u16 vid)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ struct netcp_intf_modpriv *intf_modpriv;
+ struct netcp_module *module;
+ int err = 0;
+
+ dev_dbg(netcp->ndev_dev, "adding rx vlan id: %d\n", vid);
+
+ mutex_lock(&netcp_modules_lock);
+ for_each_module(netcp, intf_modpriv) {
+ module = intf_modpriv->netcp_module;
+ if ((module->add_vid != NULL) && (vid != 0)) {
+ err = module->add_vid(intf_modpriv->module_priv, vid);
+ if (err != 0) {
+ dev_err(netcp->ndev_dev, "Could not add vlan id = %d\n",
+ vid);
+ return -ENODEV;
+ }
+ }
+ }
+ mutex_unlock(&netcp_modules_lock);
+ return 0;
+}
+
+static int netcp_rx_kill_vid(struct net_device *ndev, __be16 proto, u16 vid)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ struct netcp_intf_modpriv *intf_modpriv;
+ struct netcp_module *module;
+ int err = 0;
+
+ dev_dbg(netcp->ndev_dev, "removing rx vlan id: %d\n", vid);
+
+ mutex_lock(&netcp_modules_lock);
+ for_each_module(netcp, intf_modpriv) {
+ module = intf_modpriv->netcp_module;
+ if (module->del_vid != NULL) {
+ err = module->del_vid(intf_modpriv->module_priv, vid);
+ if (err != 0) {
+ dev_err(netcp->ndev_dev, "Could not delete vlan id = %d\n",
+ vid);
+ return -ENODEV;
+ }
+ }
+ }
+ mutex_unlock(&netcp_modules_lock);
+ return 0;
+}
+
+static u16 netcp_select_queue(struct net_device *dev, struct sk_buff *skb,
+ void *accel_priv,
+ select_queue_fallback_t fallback)
+{
+ return 0;
+}
+
+static int netcp_setup_tc(struct net_device *dev, u8 num_tc)
+{
+ int i;
+
+ /* setup tc must be called under rtnl lock */
+ ASSERT_RTNL();
+
+ /* Sanity-check the number of traffic classes requested */
+ if ((dev->real_num_tx_queues <= 1) ||
+ (dev->real_num_tx_queues < num_tc))
+ return -EINVAL;
+
+ /* Configure traffic class to queue mappings */
+ if (num_tc) {
+ netdev_set_num_tc(dev, num_tc);
+ for (i = 0; i < num_tc; i++)
+ netdev_set_tc_queue(dev, i, 1, i);
+ } else {
+ netdev_reset_tc(dev);
+ }
+
+ return 0;
+}
+
+static const struct net_device_ops netcp_netdev_ops = {
+ .ndo_open = netcp_ndo_open,
+ .ndo_stop = netcp_ndo_stop,
+ .ndo_start_xmit = netcp_ndo_start_xmit,
+ .ndo_set_rx_mode = netcp_set_rx_mode,
+ .ndo_do_ioctl = netcp_ndo_ioctl,
+ .ndo_change_mtu = netcp_ndo_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_vlan_rx_add_vid = netcp_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = netcp_rx_kill_vid,
+ .ndo_tx_timeout = netcp_ndo_tx_timeout,
+ .ndo_select_queue = netcp_select_queue,
+ .ndo_setup_tc = netcp_setup_tc,
+};
+
+int netcp_create_interface(struct netcp_device *netcp_device,
+ struct device_node *node_interface)
+{
+ struct device *dev = netcp_device->device;
+ struct device_node *node = dev->of_node;
+ struct netcp_intf *netcp;
+ struct net_device *ndev;
+ resource_size_t size;
+ struct resource res;
+ void __iomem *efuse = NULL;
+ u32 efuse_mac = 0;
+ const void *mac_addr;
+ u8 efuse_mac_addr[6];
+ u32 temp[2];
+ int ret = 0;
+
+ ndev = alloc_etherdev_mqs(sizeof(*netcp), 1, 1);
+ if (!ndev) {
+ dev_err(dev, "Error allocating netdev\n");
+ return -ENOMEM;
+ }
+
+ ndev->features |= NETIF_F_SG;
+ ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
+ ndev->hw_features = ndev->features;
+ ndev->vlan_features |= NETIF_F_SG;
+
+ netcp = netdev_priv(ndev);
+ spin_lock_init(&netcp->lock);
+ INIT_LIST_HEAD(&netcp->module_head);
+ INIT_LIST_HEAD(&netcp->txhook_list_head);
+ INIT_LIST_HEAD(&netcp->rxhook_list_head);
+ INIT_LIST_HEAD(&netcp->addr_list);
+ netcp->netcp_device = netcp_device;
+ netcp->dev = netcp_device->device;
+ netcp->ndev = ndev;
+ netcp->ndev_dev = &ndev->dev;
+ netcp->msg_enable = netif_msg_init(netcp_debug_level, NETCP_DEBUG);
+ netcp->tx_pause_threshold = MAX_SKB_FRAGS;
+ netcp->tx_resume_threshold = netcp->tx_pause_threshold;
+ netcp->big_endian = netcp_device->big_endian;
+ netcp->node_interface = node_interface;
+
+ ret = of_property_read_u32(node_interface, "efuse-mac", &efuse_mac);
+ if (efuse_mac) {
+ if (of_address_to_resource(node, NETCP_EFUSE_REG_INDEX, &res)) {
+ dev_err(dev, "could not find efuse-mac reg resource\n");
+ ret = -ENODEV;
+ goto quit;
+ }
+ size = resource_size(&res);
+
+ if (!devm_request_mem_region(dev, res.start, size,
+ dev_name(dev))) {
+ dev_err(dev, "could not reserve resource\n");
+ ret = -ENOMEM;
+ goto quit;
+ }
+
+ efuse = devm_ioremap_nocache(dev, res.start, size);
+ if (!efuse) {
+ dev_err(dev, "could not map resource\n");
+ devm_release_mem_region(dev, res.start, size);
+ ret = -ENOMEM;
+ goto quit;
+ }
+
+ emac_arch_get_mac_addr(efuse_mac_addr, efuse);
+ if (is_valid_ether_addr(efuse_mac_addr))
+ ether_addr_copy(ndev->dev_addr, efuse_mac_addr);
+ else
+ random_ether_addr(ndev->dev_addr);
+
+ devm_iounmap(dev, efuse);
+ devm_release_mem_region(dev, res.start, size);
+ } else {
+ mac_addr = of_get_mac_address(node_interface);
+ if (mac_addr)
+ ether_addr_copy(ndev->dev_addr, mac_addr);
+ else
+ random_ether_addr(ndev->dev_addr);
+ }
+
+ ret = of_property_read_u32(node_interface, "rx-channel",
+ &netcp->dma_chan_id);
+ if (ret < 0) {
+ dev_err(dev, "missing \"rx-channel\" parameter\n");
+ ret = -ENODEV;
+ goto quit;
+ }
+
+ ret = of_property_read_u32(node_interface, "rx-queue",
+ &netcp->rx_queue_id);
+ if (ret < 0) {
+ dev_warn(dev, "missing \"rx-queue\" parameter\n");
+ netcp->rx_queue_id = KNAV_QUEUE_QPEND;
+ }
+
+ ret = of_property_read_u32_array(node_interface, "rx-queue-depth",
+ netcp->rx_queue_depths,
+ KNAV_DMA_FDQ_PER_CHAN);
+ if (ret < 0) {
+ dev_err(dev, "missing \"rx-queue-depth\" parameter\n");
+ netcp->rx_queue_depths[0] = 128;
+ }
+
+ ret = of_property_read_u32_array(node_interface, "rx-buffer-size",
+ netcp->rx_buffer_sizes,
+ KNAV_DMA_FDQ_PER_CHAN);
+ if (ret) {
+ dev_err(dev, "missing \"rx-buffer-size\" parameter\n");
+ netcp->rx_buffer_sizes[0] = 1536;
+ }
+
+ ret = of_property_read_u32_array(node_interface, "rx-pool", temp, 2);
+ if (ret < 0) {
+ dev_err(dev, "missing \"rx-pool\" parameter\n");
+ ret = -ENODEV;
+ goto quit;
+ }
+ netcp->rx_pool_size = temp[0];
+ netcp->rx_pool_region_id = temp[1];
+
+ ret = of_property_read_u32_array(node_interface, "tx-pool", temp, 2);
+ if (ret < 0) {
+ dev_err(dev, "missing \"tx-pool\" parameter\n");
+ ret = -ENODEV;
+ goto quit;
+ }
+ netcp->tx_pool_size = temp[0];
+ netcp->tx_pool_region_id = temp[1];
+
+ if (netcp->tx_pool_size < MAX_SKB_FRAGS) {
+ dev_err(dev, "tx-pool size too small, must be atleast(%ld)\n",
+ MAX_SKB_FRAGS);
+ ret = -ENODEV;
+ goto quit;
+ }
+
+ ret = of_property_read_u32(node_interface, "tx-completion-queue",
+ &netcp->tx_compl_qid);
+ if (ret < 0) {
+ dev_warn(dev, "missing \"tx-completion-queue\" parameter\n");
+ netcp->tx_compl_qid = KNAV_QUEUE_QPEND;
+ }
+
+ /* NAPI register */
+ netif_napi_add(ndev, &netcp->rx_napi, netcp_rx_poll, NETCP_NAPI_WEIGHT);
+ netif_napi_add(ndev, &netcp->tx_napi, netcp_tx_poll, NETCP_NAPI_WEIGHT);
+
+ /* Register the network device */
+ ndev->dev_id = 0;
+ ndev->watchdog_timeo = NETCP_TX_TIMEOUT;
+ ndev->netdev_ops = &netcp_netdev_ops;
+ SET_NETDEV_DEV(ndev, dev);
+
+ list_add_tail(&netcp->interface_list, &netcp_device->interface_head);
+ return 0;
+
+quit:
+ free_netdev(ndev);
+ return ret;
+}
+
+void netcp_delete_interface(struct netcp_device *netcp_device,
+ struct net_device *ndev)
+{
+ struct netcp_intf_modpriv *intf_modpriv, *tmp;
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ struct netcp_module *module;
+
+ dev_dbg(netcp_device->device, "Removing interface \"%s\"\n",
+ ndev->name);
+
+ /* Notify each of the modules that the interface is going away */
+ list_for_each_entry_safe(intf_modpriv, tmp, &netcp->module_head,
+ intf_list) {
+ module = intf_modpriv->netcp_module;
+ dev_dbg(netcp_device->device, "Releasing module \"%s\"\n",
+ module->name);
+ if (module->release)
+ module->release(intf_modpriv->module_priv);
+ list_del(&intf_modpriv->intf_list);
+ kfree(intf_modpriv);
+ }
+ WARN(!list_empty(&netcp->module_head), "%s interface module list is not empty!\n",
+ ndev->name);
+
+ list_del(&netcp->interface_list);
+
+ of_node_put(netcp->node_interface);
+ unregister_netdev(ndev);
+ netif_napi_del(&netcp->rx_napi);
+ free_netdev(ndev);
+}
+
+static int netcp_probe(struct platform_device *pdev)
+{
+ struct device_node *node = pdev->dev.of_node;
+ struct device_node *child, *interfaces;
+ struct netcp_device *netcp_device;
+ struct device *dev = &pdev->dev;
+ struct netcp_module *module;
+ int ret;
+
+ if (!node) {
+ dev_err(dev, "could not find device info\n");
+ return -ENODEV;
+ }
+
+ pm_runtime_enable(&pdev->dev);
+ ret = pm_runtime_get_sync(&pdev->dev);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enable NETCP power-domain\n");
+ return ret;
+ }
+
+ /* Allocate a new NETCP device instance */
+ netcp_device = devm_kzalloc(dev, sizeof(*netcp_device), GFP_KERNEL);
+ if (!netcp_device) {
+ dev_err(dev, "failure allocating NETCP device\n");
+ return -ENOMEM;
+ }
+
+ netcp_device->big_endian = (of_get_property(node, "big-endian", NULL)
+ != NULL);
+
+ ret = of_property_read_u32(node, "dma-id", &netcp_device->dma_id);
+ if (ret < 0) {
+ dev_err(dev, "No Packet DMA device id, err %d\n", ret);
+ return -ENODEV;
+ }
+
+ /* Initialize the NETCP device instance */
+ INIT_LIST_HEAD(&netcp_device->interface_head);
+ INIT_LIST_HEAD(&netcp_device->modpriv_head);
+ netcp_device->device = dev;
+ platform_set_drvdata(pdev, netcp_device);
+
+ /* create interfaces */
+ interfaces = of_get_child_by_name(node, "netcp-interfaces");
+ if (!interfaces) {
+ dev_err(dev, "could not find netcp-interfaces node\n");
+ ret = -ENODEV;
+ goto probe_quit;
+ }
+
+ for_each_available_child_of_node(interfaces, child) {
+ ret = netcp_create_interface(netcp_device, child);
+ if (ret) {
+ dev_err(dev, "could not create interface(%s)\n",
+ child->name);
+ goto probe_quit;
+ }
+ }
+
+ /* Add the device instance to the list */
+ list_add_tail(&netcp_device->device_list, &netcp_devices);
+
+ /* Probe & attach any modules already registered */
+ mutex_lock(&netcp_modules_lock);
+ for_each_netcp_module(module) {
+ ret = netcp_module_probe(netcp_device, module);
+ if (ret < 0)
+ dev_err(dev, "module(%s) probe failed\n", module->name);
+ }
+ mutex_unlock(&netcp_modules_lock);
+ return 0;
+
+probe_quit:
+ pm_runtime_put_sync(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+ platform_set_drvdata(pdev, NULL);
+ return ret;
+}
+
+static int netcp_remove(struct platform_device *pdev)
+{
+ struct netcp_device *netcp_device = platform_get_drvdata(pdev);
+ struct netcp_inst_modpriv *inst_modpriv, *tmp;
+ struct netcp_module *module;
+
+ list_for_each_entry_safe(inst_modpriv, tmp, &netcp_device->modpriv_head,
+ inst_list) {
+ module = inst_modpriv->netcp_module;
+ dev_dbg(&pdev->dev, "Removing module \"%s\"\n", module->name);
+ module->remove(netcp_device, inst_modpriv->module_priv);
+ list_del(&inst_modpriv->inst_list);
+ kfree(inst_modpriv);
+ }
+ WARN(!list_empty(&netcp_device->interface_head), "%s interface list not empty!\n",
+ pdev->name);
+
+ devm_kfree(&pdev->dev, netcp_device);
+ pm_runtime_put_sync(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+ platform_set_drvdata(pdev, NULL);
+ return 0;
+}
+
+static struct of_device_id of_match[] = {
+ { .compatible = "ti,netcp-1.0", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, of_match);
+
+static struct platform_driver netcp_driver = {
+ .driver = {
+ .name = "netcp-1.0",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match,
+ },
+ .probe = netcp_probe,
+ .remove = netcp_remove,
+};
+module_platform_driver(netcp_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("TI NETCP driver for Keystone SOCs");
diff --git a/drivers/net/ethernet/ti/netcp_ethss.c b/drivers/net/ethernet/ti/netcp_ethss.c
new file mode 100644
index 0000000..23ecf95
--- /dev/null
+++ b/drivers/net/ethernet/ti/netcp_ethss.c
@@ -0,0 +1,2177 @@
+/*
+ * Keystone GBE and XGBE subsystem code
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated
+ * Authors: Sandeep Nair <[email protected]>
+ * Sandeep Paulraj <[email protected]>
+ * Cyril Chemparathy <[email protected]>
+ * Santosh Shilimkar <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/io.h>
+#include <linux/of_mdio.h>
+#include <linux/of_address.h>
+#include <linux/if_vlan.h>
+#include <linux/ethtool.h>
+
+#include "cpsw_ale.h"
+#include "netcp.h"
+
+#define NETCP_DRIVER_NAME "TI KeyStone Ethernet Driver"
+#define NETCP_DRIVER_VERSION "v1.0"
+
+#define GBE_IDENT(reg) ((reg >> 16) & 0xffff)
+#define GBE_MAJOR_VERSION(reg) (reg >> 8 & 0x7)
+#define GBE_MINOR_VERSION(reg) (reg & 0xff)
+#define GBE_RTL_VERSION(reg) ((reg >> 11) & 0x1f)
+
+/* 1G Ethernet SS defines */
+#define GBE_MODULE_NAME "netcp-gbe"
+#define GBE_SS_VERSION_14 0x4ed21104
+
+#define GBE13_SGMII_MODULE_OFFSET 0x100
+#define GBE13_SGMII34_MODULE_OFFSET 0x400
+#define GBE13_SWITCH_MODULE_OFFSET 0x800
+#define GBE13_HOST_PORT_OFFSET 0x834
+#define GBE13_SLAVE_PORT_OFFSET 0x860
+#define GBE13_EMAC_OFFSET 0x900
+#define GBE13_SLAVE_PORT2_OFFSET 0xa00
+#define GBE13_HW_STATS_OFFSET 0xb00
+#define GBE13_ALE_OFFSET 0xe00
+#define GBE13_HOST_PORT_NUM 0
+#define GBE13_NUM_SLAVES 4
+#define GBE13_NUM_ALE_PORTS (GBE13_NUM_SLAVES + 1)
+#define GBE13_NUM_ALE_ENTRIES 1024
+
+/* 10G Ethernet SS defines */
+#define XGBE_MODULE_NAME "netcp-xgbe"
+#define XGBE_SS_VERSION_10 0x4ee42100
+
+#define XGBE_SERDES_REG_INDEX 1
+#define XGBE10_SGMII_MODULE_OFFSET 0x100
+#define XGBE10_SWITCH_MODULE_OFFSET 0x1000
+#define XGBE10_HOST_PORT_OFFSET 0x1034
+#define XGBE10_SLAVE_PORT_OFFSET 0x1064
+#define XGBE10_EMAC_OFFSET 0x1400
+#define XGBE10_ALE_OFFSET 0x1700
+#define XGBE10_HW_STATS_OFFSET 0x1800
+#define XGBE10_HOST_PORT_NUM 0
+#define XGBE10_NUM_SLAVES 2
+#define XGBE10_NUM_ALE_PORTS (XGBE10_NUM_SLAVES + 1)
+#define XGBE10_NUM_ALE_ENTRIES 1024
+
+#define GBE_TIMER_INTERVAL (HZ / 2)
+
+/* Soft reset register values */
+#define SOFT_RESET_MASK BIT(0)
+#define SOFT_RESET BIT(0)
+#define DEVICE_EMACSL_RESET_POLL_COUNT 100
+#define GMACSL_RET_WARN_RESET_INCOMPLETE -2
+
+#define MACSL_RX_ENABLE_CSF BIT(23)
+#define MACSL_ENABLE_EXT_CTL BIT(18)
+#define MACSL_XGMII_ENABLE BIT(13)
+#define MACSL_XGIG_MODE BIT(8)
+#define MACSL_GIG_MODE BIT(7)
+#define MACSL_GMII_ENABLE BIT(5)
+#define MACSL_FULLDUPLEX BIT(0)
+
+#define GBE_CTL_P0_ENABLE BIT(2)
+#define GBE_REG_VAL_STAT_ENABLE_ALL 0xff
+#define XGBE_REG_VAL_STAT_ENABLE_ALL 0xf
+#define GBE_STATS_CD_SEL BIT(28)
+
+#define GBE_PORT_MASK(x) (BIT(x) - 1)
+#define GBE_MASK_NO_PORTS 0
+
+#define GBE_DEF_1G_MAC_CONTROL \
+ (MACSL_GIG_MODE | MACSL_GMII_ENABLE | \
+ MACSL_ENABLE_EXT_CTL | MACSL_RX_ENABLE_CSF)
+
+#define GBE_DEF_10G_MAC_CONTROL \
+ (MACSL_XGIG_MODE | MACSL_XGMII_ENABLE | \
+ MACSL_ENABLE_EXT_CTL | MACSL_RX_ENABLE_CSF)
+
+#define GBE_STATSA_MODULE 0
+#define GBE_STATSB_MODULE 1
+#define GBE_STATSC_MODULE 2
+#define GBE_STATSD_MODULE 3
+
+#define XGBE_STATS0_MODULE 0
+#define XGBE_STATS1_MODULE 1
+#define XGBE_STATS2_MODULE 2
+
+#define MAX_SLAVES GBE13_NUM_SLAVES
+/* s: 0-based slave_port */
+#define SGMII_BASE(s) \
+ (((s) < 2) ? gbe_dev->sgmii_port_regs : gbe_dev->sgmii_port34_regs)
+
+#define GBE_TX_QUEUE 648
+#define GBE_TXHOOK_ORDER 0
+#define GBE_DEFAULT_ALE_AGEOUT 30
+#define SLAVE_LINK_IS_XGMII(s) ((s)->link_interface >= XGMII_LINK_MAC_PHY)
+#define NETCP_LINK_STATE_INVALID -1
+
+#define GBE_SET_REG_OFS(p, rb, rn) p->rb##_ofs.rn = \
+ offsetof(struct gbe##_##rb, rn)
+#define XGBE_SET_REG_OFS(p, rb, rn) p->rb##_ofs.rn = \
+ offsetof(struct xgbe##_##rb, rn)
+#define GBE_REG_ADDR(p, rb, rn) (p->rb + p->rb##_ofs.rn)
+
+struct xgbe_ss_regs {
+ u32 id_ver;
+ u32 synce_count;
+ u32 synce_mux;
+ u32 control;
+};
+
+struct xgbe_switch_regs {
+ u32 id_ver;
+ u32 control;
+ u32 emcontrol;
+ u32 stat_port_en;
+ u32 ptype;
+ u32 soft_idle;
+ u32 thru_rate;
+ u32 gap_thresh;
+ u32 tx_start_wds;
+ u32 flow_control;
+ u32 cppi_thresh;
+};
+
+struct xgbe_port_regs {
+ u32 blk_cnt;
+ u32 port_vlan;
+ u32 tx_pri_map;
+ u32 sa_lo;
+ u32 sa_hi;
+ u32 ts_ctl;
+ u32 ts_seq_ltype;
+ u32 ts_vlan;
+ u32 ts_ctl_ltype2;
+ u32 ts_ctl2;
+ u32 control;
+};
+
+struct xgbe_host_port_regs {
+ u32 blk_cnt;
+ u32 port_vlan;
+ u32 tx_pri_map;
+ u32 src_id;
+ u32 rx_pri_map;
+ u32 rx_maxlen;
+};
+
+struct xgbe_emac_regs {
+ u32 id_ver;
+ u32 mac_control;
+ u32 mac_status;
+ u32 soft_reset;
+ u32 rx_maxlen;
+ u32 __reserved_0;
+ u32 rx_pause;
+ u32 tx_pause;
+ u32 em_control;
+ u32 __reserved_1;
+ u32 tx_gap;
+ u32 rsvd[4];
+};
+
+struct xgbe_host_hw_stats {
+ u32 rx_good_frames;
+ u32 rx_broadcast_frames;
+ u32 rx_multicast_frames;
+ u32 __rsvd_0[3];
+ u32 rx_oversized_frames;
+ u32 __rsvd_1;
+ u32 rx_undersized_frames;
+ u32 __rsvd_2;
+ u32 overrun_type4;
+ u32 overrun_type5;
+ u32 rx_bytes;
+ u32 tx_good_frames;
+ u32 tx_broadcast_frames;
+ u32 tx_multicast_frames;
+ u32 __rsvd_3[9];
+ u32 tx_bytes;
+ u32 tx_64byte_frames;
+ u32 tx_65_to_127byte_frames;
+ u32 tx_128_to_255byte_frames;
+ u32 tx_256_to_511byte_frames;
+ u32 tx_512_to_1023byte_frames;
+ u32 tx_1024byte_frames;
+ u32 net_bytes;
+ u32 rx_sof_overruns;
+ u32 rx_mof_overruns;
+ u32 rx_dma_overruns;
+};
+
+struct xgbe_hw_stats {
+ u32 rx_good_frames;
+ u32 rx_broadcast_frames;
+ u32 rx_multicast_frames;
+ u32 rx_pause_frames;
+ u32 rx_crc_errors;
+ u32 rx_align_code_errors;
+ u32 rx_oversized_frames;
+ u32 rx_jabber_frames;
+ u32 rx_undersized_frames;
+ u32 rx_fragments;
+ u32 overrun_type4;
+ u32 overrun_type5;
+ u32 rx_bytes;
+ u32 tx_good_frames;
+ u32 tx_broadcast_frames;
+ u32 tx_multicast_frames;
+ u32 tx_pause_frames;
+ u32 tx_deferred_frames;
+ u32 tx_collision_frames;
+ u32 tx_single_coll_frames;
+ u32 tx_mult_coll_frames;
+ u32 tx_excessive_collisions;
+ u32 tx_late_collisions;
+ u32 tx_underrun;
+ u32 tx_carrier_sense_errors;
+ u32 tx_bytes;
+ u32 tx_64byte_frames;
+ u32 tx_65_to_127byte_frames;
+ u32 tx_128_to_255byte_frames;
+ u32 tx_256_to_511byte_frames;
+ u32 tx_512_to_1023byte_frames;
+ u32 tx_1024byte_frames;
+ u32 net_bytes;
+ u32 rx_sof_overruns;
+ u32 rx_mof_overruns;
+ u32 rx_dma_overruns;
+};
+#define XGBE10_NUM_STAT_ENTRIES (sizeof(struct xgbe_hw_stats)/sizeof(u32))
+
+struct gbe_ss_regs {
+ u32 id_ver;
+ u32 soft_reset;
+ u32 control;
+ u32 int_control;
+ u32 rx_thresh_en;
+ u32 rx_en;
+ u32 tx_en;
+ u32 misc_en;
+ u32 mem_allign1[8];
+ u32 rx_thresh_stat;
+ u32 rx_stat;
+ u32 tx_stat;
+ u32 misc_stat;
+ u32 mem_allign2[8];
+ u32 rx_imax;
+ u32 tx_imax;
+};
+
+struct gbe_ss_regs_ofs {
+ u16 id_ver;
+ u16 control;
+};
+
+struct gbe_switch_regs {
+ u32 id_ver;
+ u32 control;
+ u32 soft_reset;
+ u32 stat_port_en;
+ u32 ptype;
+ u32 soft_idle;
+ u32 thru_rate;
+ u32 gap_thresh;
+ u32 tx_start_wds;
+ u32 flow_control;
+};
+
+struct gbe_switch_regs_ofs {
+ u16 id_ver;
+ u16 control;
+ u16 soft_reset;
+ u16 emcontrol;
+ u16 stat_port_en;
+ u16 ptype;
+ u16 flow_control;
+};
+
+struct gbe_port_regs {
+ u32 max_blks;
+ u32 blk_cnt;
+ u32 port_vlan;
+ u32 tx_pri_map;
+ u32 sa_lo;
+ u32 sa_hi;
+ u32 ts_ctl;
+ u32 ts_seq_ltype;
+ u32 ts_vlan;
+ u32 ts_ctl_ltype2;
+ u32 ts_ctl2;
+};
+
+struct gbe_port_regs_ofs {
+ u16 port_vlan;
+ u16 tx_pri_map;
+ u16 sa_lo;
+ u16 sa_hi;
+ u16 ts_ctl;
+ u16 ts_seq_ltype;
+ u16 ts_vlan;
+ u16 ts_ctl_ltype2;
+ u16 ts_ctl2;
+};
+
+struct gbe_host_port_regs {
+ u32 src_id;
+ u32 port_vlan;
+ u32 rx_pri_map;
+ u32 rx_maxlen;
+};
+
+struct gbe_host_port_regs_ofs {
+ u16 port_vlan;
+ u16 tx_pri_map;
+ u16 rx_maxlen;
+};
+
+struct gbe_emac_regs {
+ u32 id_ver;
+ u32 mac_control;
+ u32 mac_status;
+ u32 soft_reset;
+ u32 rx_maxlen;
+ u32 __reserved_0;
+ u32 rx_pause;
+ u32 tx_pause;
+ u32 __reserved_1;
+ u32 rx_pri_map;
+ u32 rsvd[6];
+};
+
+struct gbe_emac_regs_ofs {
+ u16 mac_control;
+ u16 soft_reset;
+ u16 rx_maxlen;
+};
+
+struct gbe_hw_stats {
+ u32 rx_good_frames;
+ u32 rx_broadcast_frames;
+ u32 rx_multicast_frames;
+ u32 rx_pause_frames;
+ u32 rx_crc_errors;
+ u32 rx_align_code_errors;
+ u32 rx_oversized_frames;
+ u32 rx_jabber_frames;
+ u32 rx_undersized_frames;
+ u32 rx_fragments;
+ u32 __pad_0[2];
+ u32 rx_bytes;
+ u32 tx_good_frames;
+ u32 tx_broadcast_frames;
+ u32 tx_multicast_frames;
+ u32 tx_pause_frames;
+ u32 tx_deferred_frames;
+ u32 tx_collision_frames;
+ u32 tx_single_coll_frames;
+ u32 tx_mult_coll_frames;
+ u32 tx_excessive_collisions;
+ u32 tx_late_collisions;
+ u32 tx_underrun;
+ u32 tx_carrier_sense_errors;
+ u32 tx_bytes;
+ u32 tx_64byte_frames;
+ u32 tx_65_to_127byte_frames;
+ u32 tx_128_to_255byte_frames;
+ u32 tx_256_to_511byte_frames;
+ u32 tx_512_to_1023byte_frames;
+ u32 tx_1024byte_frames;
+ u32 net_bytes;
+ u32 rx_sof_overruns;
+ u32 rx_mof_overruns;
+ u32 rx_dma_overruns;
+};
+#define GBE13_NUM_HW_STAT_ENTRIES (sizeof(struct gbe_hw_stats)/sizeof(u32))
+#define GBE13_NUM_HW_STATS_MOD 2
+#define XGBE10_NUM_HW_STATS_MOD 3
+#define GBE_MAX_HW_STAT_MODS 3
+#define GBE_HW_STATS_REG_MAP_SZ 0x100
+
+struct gbe_slave {
+ void __iomem *port_regs;
+ void __iomem *emac_regs;
+ struct gbe_port_regs_ofs port_regs_ofs;
+ struct gbe_emac_regs_ofs emac_regs_ofs;
+ int slave_num; /* 0 based logical number */
+ int port_num; /* actual port number */
+ atomic_t link_state;
+ bool open;
+ struct phy_device *phy;
+ u32 link_interface;
+ u32 mac_control;
+ u8 phy_port_t;
+ struct device_node *phy_node;
+ struct list_head slave_list;
+};
+
+struct gbe_priv {
+ struct device *dev;
+ struct netcp_device *netcp_device;
+ struct timer_list timer;
+ u32 num_slaves;
+ u32 ale_entries;
+ u32 ale_ports;
+ bool enable_ale;
+ struct netcp_tx_pipe tx_pipe;
+
+ int host_port;
+ u32 rx_packet_max;
+ u32 ss_version;
+
+ void __iomem *ss_regs;
+ void __iomem *switch_regs;
+ void __iomem *host_port_regs;
+ void __iomem *ale_reg;
+ void __iomem *sgmii_port_regs;
+ void __iomem *sgmii_port34_regs;
+ void __iomem *xgbe_serdes_regs;
+ void __iomem *hw_stats_regs[GBE_MAX_HW_STAT_MODS];
+
+ struct gbe_ss_regs_ofs ss_regs_ofs;
+ struct gbe_switch_regs_ofs switch_regs_ofs;
+ struct gbe_host_port_regs_ofs host_port_regs_ofs;
+
+ struct cpsw_ale *ale;
+ unsigned int tx_queue_id;
+ unsigned dma_chan_id;
+
+ struct list_head gbe_intf_head;
+ struct list_head secondary_slaves;
+ struct net_device *dummy_ndev;
+
+ u64 *hw_stats;
+ const struct netcp_ethtool_stat *et_stats;
+ int num_et_stats;
+ /* Lock for updating the hwstats */
+ spinlock_t hw_stats_lock;
+};
+
+struct gbe_intf {
+ struct net_device *ndev;
+ struct device *dev;
+ struct gbe_priv *gbe_dev;
+ struct netcp_tx_pipe tx_pipe;
+ struct gbe_slave *slave;
+ struct list_head gbe_intf_list;
+ unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
+};
+
+static struct netcp_module gbe_module;
+static struct netcp_module xgbe_module;
+
+/* Statistic management */
+struct netcp_ethtool_stat {
+ char desc[ETH_GSTRING_LEN];
+ int type;
+ u32 size;
+ int offset;
+};
+
+#define GBE_STATSA_INFO(field) "GBE_A:"#field, GBE_STATSA_MODULE,\
+ FIELD_SIZEOF(struct gbe_hw_stats, field), \
+ offsetof(struct gbe_hw_stats, field)
+
+#define GBE_STATSB_INFO(field) "GBE_B:"#field, GBE_STATSB_MODULE,\
+ FIELD_SIZEOF(struct gbe_hw_stats, field), \
+ offsetof(struct gbe_hw_stats, field)
+
+#define GBE_STATSC_INFO(field) "GBE_C:"#field, GBE_STATSC_MODULE,\
+ FIELD_SIZEOF(struct gbe_hw_stats, field), \
+ offsetof(struct gbe_hw_stats, field)
+
+#define GBE_STATSD_INFO(field) "GBE_D:"#field, GBE_STATSD_MODULE,\
+ FIELD_SIZEOF(struct gbe_hw_stats, field), \
+ offsetof(struct gbe_hw_stats, field)
+
+static const struct netcp_ethtool_stat gbe13_et_stats[] = {
+ /* GBE module A */
+ {GBE_STATSA_INFO(rx_good_frames)},
+ {GBE_STATSA_INFO(rx_broadcast_frames)},
+ {GBE_STATSA_INFO(rx_multicast_frames)},
+ {GBE_STATSA_INFO(rx_pause_frames)},
+ {GBE_STATSA_INFO(rx_crc_errors)},
+ {GBE_STATSA_INFO(rx_align_code_errors)},
+ {GBE_STATSA_INFO(rx_oversized_frames)},
+ {GBE_STATSA_INFO(rx_jabber_frames)},
+ {GBE_STATSA_INFO(rx_undersized_frames)},
+ {GBE_STATSA_INFO(rx_fragments)},
+ {GBE_STATSA_INFO(rx_bytes)},
+ {GBE_STATSA_INFO(tx_good_frames)},
+ {GBE_STATSA_INFO(tx_broadcast_frames)},
+ {GBE_STATSA_INFO(tx_multicast_frames)},
+ {GBE_STATSA_INFO(tx_pause_frames)},
+ {GBE_STATSA_INFO(tx_deferred_frames)},
+ {GBE_STATSA_INFO(tx_collision_frames)},
+ {GBE_STATSA_INFO(tx_single_coll_frames)},
+ {GBE_STATSA_INFO(tx_mult_coll_frames)},
+ {GBE_STATSA_INFO(tx_excessive_collisions)},
+ {GBE_STATSA_INFO(tx_late_collisions)},
+ {GBE_STATSA_INFO(tx_underrun)},
+ {GBE_STATSA_INFO(tx_carrier_sense_errors)},
+ {GBE_STATSA_INFO(tx_bytes)},
+ {GBE_STATSA_INFO(tx_64byte_frames)},
+ {GBE_STATSA_INFO(tx_65_to_127byte_frames)},
+ {GBE_STATSA_INFO(tx_128_to_255byte_frames)},
+ {GBE_STATSA_INFO(tx_256_to_511byte_frames)},
+ {GBE_STATSA_INFO(tx_512_to_1023byte_frames)},
+ {GBE_STATSA_INFO(tx_1024byte_frames)},
+ {GBE_STATSA_INFO(net_bytes)},
+ {GBE_STATSA_INFO(rx_sof_overruns)},
+ {GBE_STATSA_INFO(rx_mof_overruns)},
+ {GBE_STATSA_INFO(rx_dma_overruns)},
+ /* GBE module B */
+ {GBE_STATSB_INFO(rx_good_frames)},
+ {GBE_STATSB_INFO(rx_broadcast_frames)},
+ {GBE_STATSB_INFO(rx_multicast_frames)},
+ {GBE_STATSB_INFO(rx_pause_frames)},
+ {GBE_STATSB_INFO(rx_crc_errors)},
+ {GBE_STATSB_INFO(rx_align_code_errors)},
+ {GBE_STATSB_INFO(rx_oversized_frames)},
+ {GBE_STATSB_INFO(rx_jabber_frames)},
+ {GBE_STATSB_INFO(rx_undersized_frames)},
+ {GBE_STATSB_INFO(rx_fragments)},
+ {GBE_STATSB_INFO(rx_bytes)},
+ {GBE_STATSB_INFO(tx_good_frames)},
+ {GBE_STATSB_INFO(tx_broadcast_frames)},
+ {GBE_STATSB_INFO(tx_multicast_frames)},
+ {GBE_STATSB_INFO(tx_pause_frames)},
+ {GBE_STATSB_INFO(tx_deferred_frames)},
+ {GBE_STATSB_INFO(tx_collision_frames)},
+ {GBE_STATSB_INFO(tx_single_coll_frames)},
+ {GBE_STATSB_INFO(tx_mult_coll_frames)},
+ {GBE_STATSB_INFO(tx_excessive_collisions)},
+ {GBE_STATSB_INFO(tx_late_collisions)},
+ {GBE_STATSB_INFO(tx_underrun)},
+ {GBE_STATSB_INFO(tx_carrier_sense_errors)},
+ {GBE_STATSB_INFO(tx_bytes)},
+ {GBE_STATSB_INFO(tx_64byte_frames)},
+ {GBE_STATSB_INFO(tx_65_to_127byte_frames)},
+ {GBE_STATSB_INFO(tx_128_to_255byte_frames)},
+ {GBE_STATSB_INFO(tx_256_to_511byte_frames)},
+ {GBE_STATSB_INFO(tx_512_to_1023byte_frames)},
+ {GBE_STATSB_INFO(tx_1024byte_frames)},
+ {GBE_STATSB_INFO(net_bytes)},
+ {GBE_STATSB_INFO(rx_sof_overruns)},
+ {GBE_STATSB_INFO(rx_mof_overruns)},
+ {GBE_STATSB_INFO(rx_dma_overruns)},
+ /* GBE module C */
+ {GBE_STATSC_INFO(rx_good_frames)},
+ {GBE_STATSC_INFO(rx_broadcast_frames)},
+ {GBE_STATSC_INFO(rx_multicast_frames)},
+ {GBE_STATSC_INFO(rx_pause_frames)},
+ {GBE_STATSC_INFO(rx_crc_errors)},
+ {GBE_STATSC_INFO(rx_align_code_errors)},
+ {GBE_STATSC_INFO(rx_oversized_frames)},
+ {GBE_STATSC_INFO(rx_jabber_frames)},
+ {GBE_STATSC_INFO(rx_undersized_frames)},
+ {GBE_STATSC_INFO(rx_fragments)},
+ {GBE_STATSC_INFO(rx_bytes)},
+ {GBE_STATSC_INFO(tx_good_frames)},
+ {GBE_STATSC_INFO(tx_broadcast_frames)},
+ {GBE_STATSC_INFO(tx_multicast_frames)},
+ {GBE_STATSC_INFO(tx_pause_frames)},
+ {GBE_STATSC_INFO(tx_deferred_frames)},
+ {GBE_STATSC_INFO(tx_collision_frames)},
+ {GBE_STATSC_INFO(tx_single_coll_frames)},
+ {GBE_STATSC_INFO(tx_mult_coll_frames)},
+ {GBE_STATSC_INFO(tx_excessive_collisions)},
+ {GBE_STATSC_INFO(tx_late_collisions)},
+ {GBE_STATSC_INFO(tx_underrun)},
+ {GBE_STATSC_INFO(tx_carrier_sense_errors)},
+ {GBE_STATSC_INFO(tx_bytes)},
+ {GBE_STATSC_INFO(tx_64byte_frames)},
+ {GBE_STATSC_INFO(tx_65_to_127byte_frames)},
+ {GBE_STATSC_INFO(tx_128_to_255byte_frames)},
+ {GBE_STATSC_INFO(tx_256_to_511byte_frames)},
+ {GBE_STATSC_INFO(tx_512_to_1023byte_frames)},
+ {GBE_STATSC_INFO(tx_1024byte_frames)},
+ {GBE_STATSC_INFO(net_bytes)},
+ {GBE_STATSC_INFO(rx_sof_overruns)},
+ {GBE_STATSC_INFO(rx_mof_overruns)},
+ {GBE_STATSC_INFO(rx_dma_overruns)},
+ /* GBE module D */
+ {GBE_STATSD_INFO(rx_good_frames)},
+ {GBE_STATSD_INFO(rx_broadcast_frames)},
+ {GBE_STATSD_INFO(rx_multicast_frames)},
+ {GBE_STATSD_INFO(rx_pause_frames)},
+ {GBE_STATSD_INFO(rx_crc_errors)},
+ {GBE_STATSD_INFO(rx_align_code_errors)},
+ {GBE_STATSD_INFO(rx_oversized_frames)},
+ {GBE_STATSD_INFO(rx_jabber_frames)},
+ {GBE_STATSD_INFO(rx_undersized_frames)},
+ {GBE_STATSD_INFO(rx_fragments)},
+ {GBE_STATSD_INFO(rx_bytes)},
+ {GBE_STATSD_INFO(tx_good_frames)},
+ {GBE_STATSD_INFO(tx_broadcast_frames)},
+ {GBE_STATSD_INFO(tx_multicast_frames)},
+ {GBE_STATSD_INFO(tx_pause_frames)},
+ {GBE_STATSD_INFO(tx_deferred_frames)},
+ {GBE_STATSD_INFO(tx_collision_frames)},
+ {GBE_STATSD_INFO(tx_single_coll_frames)},
+ {GBE_STATSD_INFO(tx_mult_coll_frames)},
+ {GBE_STATSD_INFO(tx_excessive_collisions)},
+ {GBE_STATSD_INFO(tx_late_collisions)},
+ {GBE_STATSD_INFO(tx_underrun)},
+ {GBE_STATSD_INFO(tx_carrier_sense_errors)},
+ {GBE_STATSD_INFO(tx_bytes)},
+ {GBE_STATSD_INFO(tx_64byte_frames)},
+ {GBE_STATSD_INFO(tx_65_to_127byte_frames)},
+ {GBE_STATSD_INFO(tx_128_to_255byte_frames)},
+ {GBE_STATSD_INFO(tx_256_to_511byte_frames)},
+ {GBE_STATSD_INFO(tx_512_to_1023byte_frames)},
+ {GBE_STATSD_INFO(tx_1024byte_frames)},
+ {GBE_STATSD_INFO(net_bytes)},
+ {GBE_STATSD_INFO(rx_sof_overruns)},
+ {GBE_STATSD_INFO(rx_mof_overruns)},
+ {GBE_STATSD_INFO(rx_dma_overruns)},
+};
+
+#define XGBE_STATS0_INFO(field) "GBE_0:"#field, XGBE_STATS0_MODULE, \
+ FIELD_SIZEOF(struct xgbe_hw_stats, field), \
+ offsetof(struct xgbe_hw_stats, field)
+
+#define XGBE_STATS1_INFO(field) "GBE_1:"#field, XGBE_STATS1_MODULE, \
+ FIELD_SIZEOF(struct xgbe_hw_stats, field), \
+ offsetof(struct xgbe_hw_stats, field)
+
+#define XGBE_STATS2_INFO(field) "GBE_2:"#field, XGBE_STATS2_MODULE, \
+ FIELD_SIZEOF(struct xgbe_hw_stats, field), \
+ offsetof(struct xgbe_hw_stats, field)
+
+static const struct netcp_ethtool_stat xgbe10_et_stats[] = {
+ /* GBE module 0 */
+ {XGBE_STATS0_INFO(rx_good_frames)},
+ {XGBE_STATS0_INFO(rx_broadcast_frames)},
+ {XGBE_STATS0_INFO(rx_multicast_frames)},
+ {XGBE_STATS0_INFO(rx_oversized_frames)},
+ {XGBE_STATS0_INFO(rx_undersized_frames)},
+ {XGBE_STATS0_INFO(overrun_type4)},
+ {XGBE_STATS0_INFO(overrun_type5)},
+ {XGBE_STATS0_INFO(rx_bytes)},
+ {XGBE_STATS0_INFO(tx_good_frames)},
+ {XGBE_STATS0_INFO(tx_broadcast_frames)},
+ {XGBE_STATS0_INFO(tx_multicast_frames)},
+ {XGBE_STATS0_INFO(tx_bytes)},
+ {XGBE_STATS0_INFO(tx_64byte_frames)},
+ {XGBE_STATS0_INFO(tx_65_to_127byte_frames)},
+ {XGBE_STATS0_INFO(tx_128_to_255byte_frames)},
+ {XGBE_STATS0_INFO(tx_256_to_511byte_frames)},
+ {XGBE_STATS0_INFO(tx_512_to_1023byte_frames)},
+ {XGBE_STATS0_INFO(tx_1024byte_frames)},
+ {XGBE_STATS0_INFO(net_bytes)},
+ {XGBE_STATS0_INFO(rx_sof_overruns)},
+ {XGBE_STATS0_INFO(rx_mof_overruns)},
+ {XGBE_STATS0_INFO(rx_dma_overruns)},
+ /* XGBE module 1 */
+ {XGBE_STATS1_INFO(rx_good_frames)},
+ {XGBE_STATS1_INFO(rx_broadcast_frames)},
+ {XGBE_STATS1_INFO(rx_multicast_frames)},
+ {XGBE_STATS1_INFO(rx_pause_frames)},
+ {XGBE_STATS1_INFO(rx_crc_errors)},
+ {XGBE_STATS1_INFO(rx_align_code_errors)},
+ {XGBE_STATS1_INFO(rx_oversized_frames)},
+ {XGBE_STATS1_INFO(rx_jabber_frames)},
+ {XGBE_STATS1_INFO(rx_undersized_frames)},
+ {XGBE_STATS1_INFO(rx_fragments)},
+ {XGBE_STATS1_INFO(overrun_type4)},
+ {XGBE_STATS1_INFO(overrun_type5)},
+ {XGBE_STATS1_INFO(rx_bytes)},
+ {XGBE_STATS1_INFO(tx_good_frames)},
+ {XGBE_STATS1_INFO(tx_broadcast_frames)},
+ {XGBE_STATS1_INFO(tx_multicast_frames)},
+ {XGBE_STATS1_INFO(tx_pause_frames)},
+ {XGBE_STATS1_INFO(tx_deferred_frames)},
+ {XGBE_STATS1_INFO(tx_collision_frames)},
+ {XGBE_STATS1_INFO(tx_single_coll_frames)},
+ {XGBE_STATS1_INFO(tx_mult_coll_frames)},
+ {XGBE_STATS1_INFO(tx_excessive_collisions)},
+ {XGBE_STATS1_INFO(tx_late_collisions)},
+ {XGBE_STATS1_INFO(tx_underrun)},
+ {XGBE_STATS1_INFO(tx_carrier_sense_errors)},
+ {XGBE_STATS1_INFO(tx_bytes)},
+ {XGBE_STATS1_INFO(tx_64byte_frames)},
+ {XGBE_STATS1_INFO(tx_65_to_127byte_frames)},
+ {XGBE_STATS1_INFO(tx_128_to_255byte_frames)},
+ {XGBE_STATS1_INFO(tx_256_to_511byte_frames)},
+ {XGBE_STATS1_INFO(tx_512_to_1023byte_frames)},
+ {XGBE_STATS1_INFO(tx_1024byte_frames)},
+ {XGBE_STATS1_INFO(net_bytes)},
+ {XGBE_STATS1_INFO(rx_sof_overruns)},
+ {XGBE_STATS1_INFO(rx_mof_overruns)},
+ {XGBE_STATS1_INFO(rx_dma_overruns)},
+ /* XGBE module 2 */
+ {XGBE_STATS2_INFO(rx_good_frames)},
+ {XGBE_STATS2_INFO(rx_broadcast_frames)},
+ {XGBE_STATS2_INFO(rx_multicast_frames)},
+ {XGBE_STATS2_INFO(rx_pause_frames)},
+ {XGBE_STATS2_INFO(rx_crc_errors)},
+ {XGBE_STATS2_INFO(rx_align_code_errors)},
+ {XGBE_STATS2_INFO(rx_oversized_frames)},
+ {XGBE_STATS2_INFO(rx_jabber_frames)},
+ {XGBE_STATS2_INFO(rx_undersized_frames)},
+ {XGBE_STATS2_INFO(rx_fragments)},
+ {XGBE_STATS2_INFO(overrun_type4)},
+ {XGBE_STATS2_INFO(overrun_type5)},
+ {XGBE_STATS2_INFO(rx_bytes)},
+ {XGBE_STATS2_INFO(tx_good_frames)},
+ {XGBE_STATS2_INFO(tx_broadcast_frames)},
+ {XGBE_STATS2_INFO(tx_multicast_frames)},
+ {XGBE_STATS2_INFO(tx_pause_frames)},
+ {XGBE_STATS2_INFO(tx_deferred_frames)},
+ {XGBE_STATS2_INFO(tx_collision_frames)},
+ {XGBE_STATS2_INFO(tx_single_coll_frames)},
+ {XGBE_STATS2_INFO(tx_mult_coll_frames)},
+ {XGBE_STATS2_INFO(tx_excessive_collisions)},
+ {XGBE_STATS2_INFO(tx_late_collisions)},
+ {XGBE_STATS2_INFO(tx_underrun)},
+ {XGBE_STATS2_INFO(tx_carrier_sense_errors)},
+ {XGBE_STATS2_INFO(tx_bytes)},
+ {XGBE_STATS2_INFO(tx_64byte_frames)},
+ {XGBE_STATS2_INFO(tx_65_to_127byte_frames)},
+ {XGBE_STATS2_INFO(tx_128_to_255byte_frames)},
+ {XGBE_STATS2_INFO(tx_256_to_511byte_frames)},
+ {XGBE_STATS2_INFO(tx_512_to_1023byte_frames)},
+ {XGBE_STATS2_INFO(tx_1024byte_frames)},
+ {XGBE_STATS2_INFO(net_bytes)},
+ {XGBE_STATS2_INFO(rx_sof_overruns)},
+ {XGBE_STATS2_INFO(rx_mof_overruns)},
+ {XGBE_STATS2_INFO(rx_dma_overruns)},
+};
+
+#define for_each_intf(i, priv) \
+ list_for_each_entry((i), &(priv)->gbe_intf_head, gbe_intf_list)
+
+#define for_each_sec_slave(slave, priv) \
+ list_for_each_entry((slave), &(priv)->secondary_slaves, slave_list)
+
+#define first_sec_slave(priv) \
+ list_first_entry(&priv->secondary_slaves, \
+ struct gbe_slave, slave_list)
+
+static void keystone_get_drvinfo(struct net_device *ndev,
+ struct ethtool_drvinfo *info)
+{
+ strncpy(info->driver, NETCP_DRIVER_NAME, sizeof(info->driver));
+ strncpy(info->version, NETCP_DRIVER_VERSION, sizeof(info->version));
+}
+
+static u32 keystone_get_msglevel(struct net_device *ndev)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ return netcp->msg_enable;
+}
+
+static void keystone_set_msglevel(struct net_device *ndev, u32 value)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ netcp->msg_enable = value;
+}
+
+static void keystone_get_stat_strings(struct net_device *ndev,
+ uint32_t stringset, uint8_t *data)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ struct gbe_intf *gbe_intf;
+ struct gbe_priv *gbe_dev;
+ int i;
+
+ gbe_intf = netcp_module_get_intf_data(&gbe_module, netcp);
+ if (!gbe_intf)
+ return;
+ gbe_dev = gbe_intf->gbe_dev;
+
+ switch (stringset) {
+ case ETH_SS_STATS:
+ for (i = 0; i < gbe_dev->num_et_stats; i++) {
+ memcpy(data, gbe_dev->et_stats[i].desc,
+ ETH_GSTRING_LEN);
+ data += ETH_GSTRING_LEN;
+ }
+ break;
+ case ETH_SS_TEST:
+ break;
+ }
+}
+
+static int keystone_get_sset_count(struct net_device *ndev, int stringset)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ struct gbe_intf *gbe_intf;
+ struct gbe_priv *gbe_dev;
+
+ gbe_intf = netcp_module_get_intf_data(&gbe_module, netcp);
+ if (!gbe_intf)
+ return -EINVAL;
+ gbe_dev = gbe_intf->gbe_dev;
+
+ switch (stringset) {
+ case ETH_SS_TEST:
+ return 0;
+ case ETH_SS_STATS:
+ return gbe_dev->num_et_stats;
+ default:
+ return -EINVAL;
+ }
+}
+
+static void gbe_update_stats(struct gbe_priv *gbe_dev, uint64_t *data)
+{
+ void __iomem *base = NULL;
+ u32 __iomem *p;
+ u32 tmp = 0;
+ int i;
+
+ for (i = 0; i < gbe_dev->num_et_stats; i++) {
+ base = gbe_dev->hw_stats_regs[gbe_dev->et_stats[i].type];
+ p = base + gbe_dev->et_stats[i].offset;
+ tmp = readl_relaxed(p);
+ gbe_dev->hw_stats[i] = gbe_dev->hw_stats[i] + tmp;
+ if (data)
+ data[i] = gbe_dev->hw_stats[i];
+ /* write-to-decrement:
+ * new register value = old register value - write value
+ */
+ writel_relaxed(tmp, p);
+ }
+ return;
+}
+
+static void gbe_update_stats_ver14(struct gbe_priv *gbe_dev, uint64_t *data)
+{
+ void __iomem *gbe_statsa = gbe_dev->hw_stats_regs[0];
+ void __iomem *gbe_statsb = gbe_dev->hw_stats_regs[1];
+ u64 *hw_stats = &gbe_dev->hw_stats[0];
+ void __iomem *base = NULL;
+ u32 __iomem *p;
+ u32 tmp = 0, val, pair_size = (gbe_dev->num_et_stats / 2);
+ int i, j, pair;
+
+ for (pair = 0; pair < 2; pair++) {
+ val = readl_relaxed(GBE_REG_ADDR(gbe_dev, switch_regs,
+ stat_port_en));
+
+ if (pair == 0)
+ val &= ~GBE_STATS_CD_SEL;
+ else
+ val |= GBE_STATS_CD_SEL;
+
+ /* make the stat modules visible */
+ writel_relaxed(val, GBE_REG_ADDR(gbe_dev, switch_regs,
+ stat_port_en));
+
+ for (i = 0; i < pair_size; i++) {
+ j = pair * pair_size + i;
+ switch (gbe_dev->et_stats[j].type) {
+ case GBE_STATSA_MODULE:
+ case GBE_STATSC_MODULE:
+ base = gbe_statsa;
+ break;
+ case GBE_STATSB_MODULE:
+ case GBE_STATSD_MODULE:
+ base = gbe_statsb;
+ break;
+ }
+
+ p = base + gbe_dev->et_stats[j].offset;
+ tmp = readl_relaxed(p);
+ hw_stats[j] += tmp;
+ if (data)
+ data[j] = hw_stats[j];
+ /* write-to-decrement:
+ * new register value = old register value - write value
+ */
+ writel_relaxed(tmp, p);
+ }
+ }
+}
+
+static void keystone_get_ethtool_stats(struct net_device *ndev,
+ struct ethtool_stats *stats,
+ uint64_t *data)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ struct gbe_intf *gbe_intf;
+ struct gbe_priv *gbe_dev;
+
+ gbe_intf = netcp_module_get_intf_data(&gbe_module, netcp);
+ if (!gbe_intf)
+ return;
+
+ gbe_dev = gbe_intf->gbe_dev;
+ spin_lock_bh(&gbe_dev->hw_stats_lock);
+ if (gbe_dev->ss_version == GBE_SS_VERSION_14)
+ gbe_update_stats_ver14(gbe_dev, data);
+ else
+ gbe_update_stats(gbe_dev, data);
+ spin_unlock_bh(&gbe_dev->hw_stats_lock);
+ return;
+}
+
+static int keystone_get_settings(struct net_device *ndev,
+ struct ethtool_cmd *cmd)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ struct phy_device *phy = ndev->phydev;
+ struct gbe_intf *gbe_intf;
+ int ret;
+
+ if (!phy)
+ return -EINVAL;
+
+ gbe_intf = netcp_module_get_intf_data(&gbe_module, netcp);
+ if (!gbe_intf)
+ return -EINVAL;
+
+ if (!gbe_intf->slave)
+ return -EINVAL;
+
+ ret = phy_ethtool_gset(phy, cmd);
+ if (!ret)
+ cmd->port = gbe_intf->slave->phy_port_t;
+
+ return ret;
+}
+
+static int keystone_set_settings(struct net_device *ndev,
+ struct ethtool_cmd *cmd)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ struct phy_device *phy = ndev->phydev;
+ struct gbe_intf *gbe_intf;
+ u32 features = cmd->advertising & cmd->supported;
+
+ if (!phy)
+ return -EINVAL;
+
+ gbe_intf = netcp_module_get_intf_data(&gbe_module, netcp);
+ if (!gbe_intf)
+ return -EINVAL;
+
+ if (!gbe_intf->slave)
+ return -EINVAL;
+
+ if (cmd->port != gbe_intf->slave->phy_port_t) {
+ if ((cmd->port == PORT_TP) && !(features & ADVERTISED_TP))
+ return -EINVAL;
+
+ if ((cmd->port == PORT_AUI) && !(features & ADVERTISED_AUI))
+ return -EINVAL;
+
+ if ((cmd->port == PORT_BNC) && !(features & ADVERTISED_BNC))
+ return -EINVAL;
+
+ if ((cmd->port == PORT_MII) && !(features & ADVERTISED_MII))
+ return -EINVAL;
+
+ if ((cmd->port == PORT_FIBRE) && !(features & ADVERTISED_FIBRE))
+ return -EINVAL;
+ }
+
+ gbe_intf->slave->phy_port_t = cmd->port;
+ return phy_ethtool_sset(phy, cmd);
+}
+
+static const struct ethtool_ops keystone_ethtool_ops = {
+ .get_drvinfo = keystone_get_drvinfo,
+ .get_link = ethtool_op_get_link,
+ .get_msglevel = keystone_get_msglevel,
+ .set_msglevel = keystone_set_msglevel,
+ .get_strings = keystone_get_stat_strings,
+ .get_sset_count = keystone_get_sset_count,
+ .get_ethtool_stats = keystone_get_ethtool_stats,
+ .get_settings = keystone_get_settings,
+ .set_settings = keystone_set_settings,
+};
+
+#define mac_hi(mac) (((mac)[0] << 0) | ((mac)[1] << 8) | \
+ ((mac)[2] << 16) | ((mac)[3] << 24))
+#define mac_lo(mac) (((mac)[4] << 0) | ((mac)[5] << 8))
+
+static void gbe_set_slave_mac(struct gbe_slave *slave,
+ struct gbe_intf *gbe_intf)
+{
+ struct net_device *ndev = gbe_intf->ndev;
+
+ writel_relaxed(mac_hi(ndev->dev_addr),
+ GBE_REG_ADDR(slave, port_regs, sa_hi));
+ writel_relaxed(mac_lo(ndev->dev_addr),
+ GBE_REG_ADDR(slave, port_regs, sa_lo));
+}
+
+static inline int gbe_get_slave_port(struct gbe_priv *priv, u32 slave_num)
+{
+ if (priv->host_port == 0)
+ return slave_num + 1;
+ else
+ return slave_num;
+}
+
+static inline void netcp_ethss_link_state_action(struct gbe_priv *gbe_dev,
+ struct net_device *ndev,
+ struct gbe_slave *slave,
+ int up)
+{
+ struct phy_device *phy = slave->phy;
+ u32 mac_control = 0;
+
+ if (up) {
+ mac_control = slave->mac_control;
+ if (phy && (phy->speed == SPEED_1000)) {
+ mac_control |= MACSL_GIG_MODE;
+ mac_control &= ~MACSL_XGIG_MODE;
+ } else if (phy && (phy->speed == SPEED_10000)) {
+ mac_control |= MACSL_XGIG_MODE;
+ mac_control &= ~MACSL_GIG_MODE;
+ }
+
+ writel_relaxed(mac_control,
+ GBE_REG_ADDR(slave, emac_regs, mac_control));
+
+ cpsw_ale_control_set(gbe_dev->ale, slave->port_num,
+ ALE_PORT_STATE,
+ ALE_PORT_STATE_FORWARD);
+
+ if (ndev && slave->open)
+ netif_carrier_on(ndev);
+ } else {
+ writel_relaxed(mac_control,
+ GBE_REG_ADDR(slave, emac_regs, mac_control));
+ cpsw_ale_control_set(gbe_dev->ale, slave->port_num,
+ ALE_PORT_STATE,
+ ALE_PORT_STATE_DISABLE);
+ if (ndev)
+ netif_carrier_off(ndev);
+ }
+
+ if (phy)
+ phy_print_status(phy);
+}
+
+static inline int gbe_phy_link_status(struct gbe_slave *slave)
+{
+ if (!slave->phy)
+ return 1;
+
+ if (slave->phy->link)
+ return 1;
+ else
+ return 0;
+}
+
+static inline void netcp_ethss_update_link_state(struct gbe_priv *gbe_dev,
+ struct gbe_slave *slave,
+ struct net_device *ndev)
+{
+ int sp = slave->slave_num;
+ int phy_link_state, sgmii_link_state = 1, link_state;
+
+ if (!slave->open)
+ return;
+
+ if (!SLAVE_LINK_IS_XGMII(slave))
+ sgmii_link_state = netcp_sgmii_get_port_link(SGMII_BASE(sp),
+ sp);
+ phy_link_state = gbe_phy_link_status(slave);
+ link_state = phy_link_state & sgmii_link_state;
+
+ if (atomic_xchg(&slave->link_state, link_state) != link_state)
+ netcp_ethss_link_state_action(gbe_dev, ndev, slave,
+ link_state);
+}
+
+static void xgbe_adjust_link(struct net_device *ndev)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ struct gbe_intf *gbe_intf;
+
+ gbe_intf = netcp_module_get_intf_data(&xgbe_module, netcp);
+ if (!gbe_intf)
+ return;
+
+ netcp_ethss_update_link_state(gbe_intf->gbe_dev, gbe_intf->slave,
+ ndev);
+}
+
+static void gbe_adjust_link(struct net_device *ndev)
+{
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ struct gbe_intf *gbe_intf;
+
+ gbe_intf = netcp_module_get_intf_data(&gbe_module, netcp);
+ if (!gbe_intf)
+ return;
+
+ netcp_ethss_update_link_state(gbe_intf->gbe_dev, gbe_intf->slave,
+ ndev);
+}
+
+static void gbe_adjust_link_sec_slaves(struct net_device *ndev)
+{
+ struct gbe_priv *gbe_dev = netdev_priv(ndev);
+ struct gbe_slave *slave;
+
+ for_each_sec_slave(slave, gbe_dev)
+ netcp_ethss_update_link_state(gbe_dev, slave, NULL);
+}
+
+/* Reset EMAC
+ * Soft reset is set and polled until clear, or until a timeout occurs
+ */
+static int gbe_port_reset(struct gbe_slave *slave)
+{
+ u32 i, v;
+
+ /* Set the soft reset bit */
+ writel_relaxed(SOFT_RESET, GBE_REG_ADDR(slave, emac_regs, soft_reset));
+
+ /* Wait for the bit to clear */
+ for (i = 0; i < DEVICE_EMACSL_RESET_POLL_COUNT; i++) {
+ v = readl_relaxed(GBE_REG_ADDR(slave, emac_regs, soft_reset));
+ if ((v & SOFT_RESET_MASK) != SOFT_RESET)
+ return 0;
+ }
+
+ /* Timeout on the reset */
+ return GMACSL_RET_WARN_RESET_INCOMPLETE;
+}
+
+/* Configure EMAC */
+static void gbe_port_config(struct gbe_priv *gbe_dev, struct gbe_slave *slave,
+ int max_rx_len)
+{
+ u32 xgmii_mode;
+
+ if (max_rx_len > NETCP_MAX_FRAME_SIZE)
+ max_rx_len = NETCP_MAX_FRAME_SIZE;
+
+ /* Enable correct MII mode at SS level */
+ if ((gbe_dev->ss_version == XGBE_SS_VERSION_10) &&
+ (slave->link_interface >= XGMII_LINK_MAC_PHY)) {
+ xgmii_mode = readl_relaxed(GBE_REG_ADDR(gbe_dev, ss_regs,
+ control));
+ xgmii_mode |= (1 << slave->slave_num);
+ writel_relaxed(xgmii_mode, GBE_REG_ADDR(gbe_dev, ss_regs,
+ control));
+ }
+
+ writel_relaxed(max_rx_len, GBE_REG_ADDR(slave, emac_regs, rx_maxlen));
+ writel_relaxed(slave->mac_control,
+ GBE_REG_ADDR(slave, emac_regs, mac_control));
+}
+
+static void gbe_slave_stop(struct gbe_intf *intf)
+{
+ struct gbe_priv *gbe_dev = intf->gbe_dev;
+ struct gbe_slave *slave = intf->slave;
+
+ gbe_port_reset(slave);
+ /* Disable forwarding */
+ cpsw_ale_control_set(gbe_dev->ale, slave->port_num,
+ ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
+ cpsw_ale_del_mcast(gbe_dev->ale, intf->ndev->broadcast,
+ 1 << slave->port_num, 0, 0);
+
+
+ if (!slave->phy)
+ return;
+
+ phy_stop(slave->phy);
+ phy_disconnect(slave->phy);
+ slave->phy = NULL;
+}
+
+static void gbe_sgmii_config(struct gbe_priv *priv, struct gbe_slave *slave)
+{
+ void __iomem *sgmii_port_regs;
+
+ sgmii_port_regs = priv->sgmii_port_regs;
+ if ((priv->ss_version == GBE_SS_VERSION_14) && (slave->slave_num >= 2))
+ sgmii_port_regs = priv->sgmii_port34_regs;
+
+ if (!SLAVE_LINK_IS_XGMII(slave)) {
+ netcp_sgmii_reset(sgmii_port_regs, slave->slave_num);
+ netcp_sgmii_config(sgmii_port_regs, slave->slave_num,
+ slave->link_interface);
+ }
+}
+
+static int gbe_slave_open(struct gbe_intf *gbe_intf)
+{
+ struct gbe_priv *priv = gbe_intf->gbe_dev;
+ struct gbe_slave *slave = gbe_intf->slave;
+ void (*hndlr)(struct net_device *) = gbe_adjust_link;
+ phy_interface_t phy_mode;
+ bool has_phy = false;
+
+ gbe_sgmii_config(priv, slave);
+ gbe_port_reset(slave);
+ gbe_port_config(priv, slave, priv->rx_packet_max);
+ gbe_set_slave_mac(slave, gbe_intf);
+ /* enable forwarding */
+ cpsw_ale_control_set(priv->ale, slave->port_num,
+ ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
+ cpsw_ale_add_mcast(priv->ale, gbe_intf->ndev->broadcast,
+ 1 << slave->port_num, 0, 0, ALE_MCAST_FWD_2);
+
+ if (slave->link_interface == SGMII_LINK_MAC_PHY) {
+ has_phy = true;
+ phy_mode = PHY_INTERFACE_MODE_SGMII;
+ slave->phy_port_t = PORT_MII;
+ } else if (slave->link_interface == XGMII_LINK_MAC_PHY) {
+ has_phy = true;
+ phy_mode = PHY_INTERFACE_MODE_NA;
+ slave->phy_port_t = PORT_FIBRE;
+ }
+
+ if (has_phy) {
+ if (priv->ss_version == XGBE_SS_VERSION_10)
+ hndlr = xgbe_adjust_link;
+
+ slave->phy = of_phy_connect(gbe_intf->ndev,
+ slave->phy_node,
+ hndlr, 0,
+ phy_mode);
+ if (!slave->phy) {
+ dev_err(priv->dev, "phy not found on slave %d\n",
+ slave->slave_num);
+ return -ENODEV;
+ } else {
+ dev_dbg(priv->dev, "phy found: id is: 0x%s\n",
+ dev_name(&slave->phy->dev));
+ phy_start(slave->phy);
+ phy_read_status(slave->phy);
+ }
+ }
+ return 0;
+}
+
+static void gbe_init_host_port(struct gbe_priv *priv)
+{
+ int bypass_en = 1;
+ /* Max length register */
+ writel_relaxed(NETCP_MAX_FRAME_SIZE,
+ GBE_REG_ADDR(priv, host_port_regs, rx_maxlen));
+
+ cpsw_ale_start(priv->ale);
+
+ if (priv->enable_ale)
+ bypass_en = 0;
+
+ cpsw_ale_control_set(priv->ale, 0, ALE_BYPASS, bypass_en);
+
+ cpsw_ale_control_set(priv->ale, 0, ALE_NO_PORT_VLAN, 1);
+
+ cpsw_ale_control_set(priv->ale, priv->host_port,
+ ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
+
+ cpsw_ale_control_set(priv->ale, 0,
+ ALE_PORT_UNKNOWN_VLAN_MEMBER,
+ GBE_PORT_MASK(priv->ale_ports));
+
+ cpsw_ale_control_set(priv->ale, 0,
+ ALE_PORT_UNKNOWN_MCAST_FLOOD,
+ GBE_PORT_MASK(priv->ale_ports - 1));
+
+ cpsw_ale_control_set(priv->ale, 0,
+ ALE_PORT_UNKNOWN_REG_MCAST_FLOOD,
+ GBE_PORT_MASK(priv->ale_ports));
+
+ cpsw_ale_control_set(priv->ale, 0,
+ ALE_PORT_UNTAGGED_EGRESS,
+ GBE_PORT_MASK(priv->ale_ports));
+}
+
+static void gbe_add_mcast_addr(struct gbe_intf *gbe_intf, u8 *addr)
+{
+ struct gbe_priv *gbe_dev = gbe_intf->gbe_dev;
+ u16 vlan_id;
+
+ cpsw_ale_add_mcast(gbe_dev->ale, addr,
+ GBE_PORT_MASK(gbe_dev->ale_ports), 0, 0,
+ ALE_MCAST_FWD_2);
+ for_each_set_bit(vlan_id, gbe_intf->active_vlans, VLAN_N_VID) {
+ cpsw_ale_add_mcast(gbe_dev->ale, addr,
+ GBE_PORT_MASK(gbe_dev->ale_ports),
+ ALE_VLAN, vlan_id, ALE_MCAST_FWD_2);
+ }
+}
+
+static void gbe_add_ucast_addr(struct gbe_intf *gbe_intf, u8 *addr)
+{
+ struct gbe_priv *gbe_dev = gbe_intf->gbe_dev;
+ u16 vlan_id;
+
+ cpsw_ale_add_ucast(gbe_dev->ale, addr, gbe_dev->host_port, 0, 0);
+
+ for_each_set_bit(vlan_id, gbe_intf->active_vlans, VLAN_N_VID)
+ cpsw_ale_add_ucast(gbe_dev->ale, addr, gbe_dev->host_port,
+ ALE_VLAN, vlan_id);
+}
+
+static void gbe_del_mcast_addr(struct gbe_intf *gbe_intf, u8 *addr)
+{
+ struct gbe_priv *gbe_dev = gbe_intf->gbe_dev;
+ u16 vlan_id;
+
+ cpsw_ale_del_mcast(gbe_dev->ale, addr, 0, 0, 0);
+
+ for_each_set_bit(vlan_id, gbe_intf->active_vlans, VLAN_N_VID) {
+ cpsw_ale_del_mcast(gbe_dev->ale, addr, 0, ALE_VLAN, vlan_id);
+ }
+}
+
+static void gbe_del_ucast_addr(struct gbe_intf *gbe_intf, u8 *addr)
+{
+ struct gbe_priv *gbe_dev = gbe_intf->gbe_dev;
+ u16 vlan_id;
+
+ cpsw_ale_del_ucast(gbe_dev->ale, addr, gbe_dev->host_port, 0, 0);
+
+ for_each_set_bit(vlan_id, gbe_intf->active_vlans, VLAN_N_VID) {
+ cpsw_ale_del_ucast(gbe_dev->ale, addr, gbe_dev->host_port,
+ ALE_VLAN, vlan_id);
+ }
+}
+
+static int gbe_add_addr(void *intf_priv, struct netcp_addr *naddr)
+{
+ struct gbe_intf *gbe_intf = intf_priv;
+ struct gbe_priv *gbe_dev = gbe_intf->gbe_dev;
+
+ dev_dbg(gbe_dev->dev, "ethss adding address %pM, type %d\n",
+ naddr->addr, naddr->type);
+
+ switch (naddr->type) {
+ case ADDR_MCAST:
+ case ADDR_BCAST:
+ gbe_add_mcast_addr(gbe_intf, naddr->addr);
+ break;
+ case ADDR_UCAST:
+ case ADDR_DEV:
+ gbe_add_ucast_addr(gbe_intf, naddr->addr);
+ break;
+ case ADDR_ANY:
+ /* nothing to do for promiscuous */
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int gbe_del_addr(void *intf_priv, struct netcp_addr *naddr)
+{
+ struct gbe_intf *gbe_intf = intf_priv;
+ struct gbe_priv *gbe_dev = gbe_intf->gbe_dev;
+
+ dev_dbg(gbe_dev->dev, "ethss deleting address %pM, type %d\n",
+ naddr->addr, naddr->type);
+
+ switch (naddr->type) {
+ case ADDR_MCAST:
+ case ADDR_BCAST:
+ gbe_del_mcast_addr(gbe_intf, naddr->addr);
+ break;
+ case ADDR_UCAST:
+ case ADDR_DEV:
+ gbe_del_ucast_addr(gbe_intf, naddr->addr);
+ break;
+ case ADDR_ANY:
+ /* nothing to do for promiscuous */
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int gbe_add_vid(void *intf_priv, int vid)
+{
+ struct gbe_intf *gbe_intf = intf_priv;
+ struct gbe_priv *gbe_dev = gbe_intf->gbe_dev;
+
+ set_bit(vid, gbe_intf->active_vlans);
+
+ cpsw_ale_add_vlan(gbe_dev->ale, vid,
+ GBE_PORT_MASK(gbe_dev->ale_ports),
+ GBE_MASK_NO_PORTS,
+ GBE_PORT_MASK(gbe_dev->ale_ports),
+ GBE_PORT_MASK(gbe_dev->ale_ports - 1));
+
+ return 0;
+}
+
+static int gbe_del_vid(void *intf_priv, int vid)
+{
+ struct gbe_intf *gbe_intf = intf_priv;
+ struct gbe_priv *gbe_dev = gbe_intf->gbe_dev;
+
+ cpsw_ale_del_vlan(gbe_dev->ale, vid, 0);
+ clear_bit(vid, gbe_intf->active_vlans);
+ return 0;
+}
+
+static int gbe_ioctl(void *intf_priv, struct ifreq *req, int cmd)
+{
+ struct gbe_intf *gbe_intf = intf_priv;
+ struct phy_device *phy = gbe_intf->slave->phy;
+ int ret = -EOPNOTSUPP;
+
+ if (phy)
+ ret = phy_mii_ioctl(phy, req, cmd);
+
+ return ret;
+}
+
+static void netcp_ethss_timer(unsigned long arg)
+{
+ struct gbe_priv *gbe_dev = (struct gbe_priv *)arg;
+ struct gbe_intf *gbe_intf;
+ struct gbe_slave *slave;
+
+ /* Check & update SGMII link state of interfaces */
+ for_each_intf(gbe_intf, gbe_dev) {
+ if (!gbe_intf->slave->open)
+ continue;
+ netcp_ethss_update_link_state(gbe_dev, gbe_intf->slave,
+ gbe_intf->ndev);
+ }
+
+ /* Check & update SGMII link state of secondary ports */
+ for_each_sec_slave(slave, gbe_dev) {
+ netcp_ethss_update_link_state(gbe_dev, slave, NULL);
+ }
+
+ spin_lock_bh(&gbe_dev->hw_stats_lock);
+
+ if (gbe_dev->ss_version == GBE_SS_VERSION_14)
+ gbe_update_stats_ver14(gbe_dev, NULL);
+ else
+ gbe_update_stats(gbe_dev, NULL);
+
+ spin_unlock_bh(&gbe_dev->hw_stats_lock);
+
+ gbe_dev->timer.expires = jiffies + GBE_TIMER_INTERVAL;
+ add_timer(&gbe_dev->timer);
+ return;
+}
+
+static int gbe_tx_hook(int order, void *data, struct netcp_packet *p_info)
+{
+ struct gbe_intf *gbe_intf = data;
+ p_info->tx_pipe = &gbe_intf->tx_pipe;
+ return 0;
+}
+
+static int gbe_open(void *intf_priv, struct net_device *ndev)
+{
+ struct gbe_intf *gbe_intf = intf_priv;
+ struct gbe_priv *gbe_dev = gbe_intf->gbe_dev;
+ struct netcp_intf *netcp = netdev_priv(ndev);
+ struct gbe_slave *slave = gbe_intf->slave;
+ int port_num = slave->port_num;
+ u32 reg;
+ int ret;
+
+ reg = readl_relaxed(GBE_REG_ADDR(gbe_dev, switch_regs, id_ver));
+ dev_dbg(gbe_dev->dev, "initializing gbe version %d.%d (%d) GBE identification value 0x%x\n",
+ GBE_MAJOR_VERSION(reg), GBE_MINOR_VERSION(reg),
+ GBE_RTL_VERSION(reg), GBE_IDENT(reg));
+
+ if (gbe_dev->enable_ale)
+ gbe_intf->tx_pipe.dma_psflags = 0;
+ else
+ gbe_intf->tx_pipe.dma_psflags = port_num;
+
+
+ dev_dbg(gbe_dev->dev, "opened TX channel %d: %p with psflags %d\n",
+ gbe_intf->tx_pipe.dma_chan_id,
+ gbe_intf->tx_pipe.dma_channel,
+ gbe_intf->tx_pipe.dma_psflags);
+
+ gbe_slave_stop(gbe_intf);
+
+ /* disable priority elevation and enable statistics on all ports */
+ writel_relaxed(0, GBE_REG_ADDR(gbe_dev, switch_regs, ptype));
+
+ /* Control register */
+ writel_relaxed(GBE_CTL_P0_ENABLE, GBE_REG_ADDR(gbe_dev, switch_regs,
+ control));
+
+ /* All statistics enabled and STAT AB visible by default */
+ writel_relaxed(GBE_REG_VAL_STAT_ENABLE_ALL,
+ GBE_REG_ADDR(gbe_dev, switch_regs, stat_port_en));
+
+ ret = gbe_slave_open(gbe_intf);
+ if (ret)
+ goto fail;
+
+ netcp_register_txhook(netcp, GBE_TXHOOK_ORDER, gbe_tx_hook,
+ gbe_intf);
+
+ slave->open = true;
+ netcp_ethss_update_link_state(gbe_dev, slave, ndev);
+ return 0;
+
+fail:
+ gbe_slave_stop(gbe_intf);
+ return ret;
+}
+
+static int gbe_close(void *intf_priv, struct net_device *ndev)
+{
+ struct gbe_intf *gbe_intf = intf_priv;
+ struct netcp_intf *netcp = netdev_priv(ndev);
+
+ gbe_slave_stop(gbe_intf);
+ netcp_unregister_txhook(netcp, GBE_TXHOOK_ORDER, gbe_tx_hook,
+ gbe_intf);
+
+ gbe_intf->slave->open = false;
+ atomic_set(&gbe_intf->slave->link_state, NETCP_LINK_STATE_INVALID);
+ return 0;
+}
+
+static int init_slave(struct gbe_priv *gbe_dev, struct gbe_slave *slave,
+ struct device_node *node)
+{
+ int port_reg_num;
+ u32 port_reg_ofs, emac_reg_ofs;
+
+ if (of_property_read_u32(node, "slave-port", &slave->slave_num)) {
+ dev_err(gbe_dev->dev, "missing slave-port paramater\n");
+ return -EINVAL;
+ }
+
+ if (of_property_read_u32(node, "link-interface",
+ &slave->link_interface)) {
+ dev_warn(gbe_dev->dev, "missing link-interface value defaulting to 1G mac-phy link\n");
+ slave->link_interface = SGMII_LINK_MAC_PHY;
+ }
+
+ slave->open = false;
+ slave->phy_node = of_parse_phandle(node, "phy-handle", 0);
+ slave->port_num = gbe_get_slave_port(gbe_dev, slave->slave_num);
+
+ if (slave->link_interface >= XGMII_LINK_MAC_PHY)
+ slave->mac_control = GBE_DEF_10G_MAC_CONTROL;
+ else
+ slave->mac_control = GBE_DEF_1G_MAC_CONTROL;
+
+ /* Emac regs memmap are contiguous but port regs are not */
+ port_reg_num = slave->slave_num;
+ if (gbe_dev->ss_version == GBE_SS_VERSION_14) {
+ if (slave->slave_num > 1) {
+ port_reg_ofs = GBE13_SLAVE_PORT2_OFFSET;
+ port_reg_num -= 2;
+ } else {
+ port_reg_ofs = GBE13_SLAVE_PORT_OFFSET;
+ }
+ } else if (gbe_dev->ss_version == XGBE_SS_VERSION_10) {
+ port_reg_ofs = XGBE10_SLAVE_PORT_OFFSET;
+ } else {
+ dev_err(gbe_dev->dev, "unknown ethss(0x%x)\n",
+ gbe_dev->ss_version);
+ return -EINVAL;
+ }
+
+ if (gbe_dev->ss_version == GBE_SS_VERSION_14)
+ emac_reg_ofs = GBE13_EMAC_OFFSET;
+ else if (gbe_dev->ss_version == XGBE_SS_VERSION_10)
+ emac_reg_ofs = XGBE10_EMAC_OFFSET;
+
+ slave->port_regs = gbe_dev->ss_regs + port_reg_ofs +
+ (0x30 * port_reg_num);
+ slave->emac_regs = gbe_dev->ss_regs + emac_reg_ofs +
+ (0x40 * slave->slave_num);
+
+ if (gbe_dev->ss_version == GBE_SS_VERSION_14) {
+ /* Initialize slave port register offsets */
+ GBE_SET_REG_OFS(slave, port_regs, port_vlan);
+ GBE_SET_REG_OFS(slave, port_regs, tx_pri_map);
+ GBE_SET_REG_OFS(slave, port_regs, sa_lo);
+ GBE_SET_REG_OFS(slave, port_regs, sa_hi);
+ GBE_SET_REG_OFS(slave, port_regs, ts_ctl);
+ GBE_SET_REG_OFS(slave, port_regs, ts_seq_ltype);
+ GBE_SET_REG_OFS(slave, port_regs, ts_vlan);
+ GBE_SET_REG_OFS(slave, port_regs, ts_ctl_ltype2);
+ GBE_SET_REG_OFS(slave, port_regs, ts_ctl2);
+
+ /* Initialize EMAC register offsets */
+ GBE_SET_REG_OFS(slave, emac_regs, mac_control);
+ GBE_SET_REG_OFS(slave, emac_regs, soft_reset);
+ GBE_SET_REG_OFS(slave, emac_regs, rx_maxlen);
+
+ } else if (gbe_dev->ss_version == XGBE_SS_VERSION_10) {
+ /* Initialize slave port register offsets */
+ XGBE_SET_REG_OFS(slave, port_regs, port_vlan);
+ XGBE_SET_REG_OFS(slave, port_regs, tx_pri_map);
+ XGBE_SET_REG_OFS(slave, port_regs, sa_lo);
+ XGBE_SET_REG_OFS(slave, port_regs, sa_hi);
+ XGBE_SET_REG_OFS(slave, port_regs, ts_ctl);
+ XGBE_SET_REG_OFS(slave, port_regs, ts_seq_ltype);
+ XGBE_SET_REG_OFS(slave, port_regs, ts_vlan);
+ XGBE_SET_REG_OFS(slave, port_regs, ts_ctl_ltype2);
+ XGBE_SET_REG_OFS(slave, port_regs, ts_ctl2);
+
+ /* Initialize EMAC register offsets */
+ XGBE_SET_REG_OFS(slave, emac_regs, mac_control);
+ XGBE_SET_REG_OFS(slave, emac_regs, soft_reset);
+ XGBE_SET_REG_OFS(slave, emac_regs, rx_maxlen);
+ }
+
+ atomic_set(&slave->link_state, NETCP_LINK_STATE_INVALID);
+ return 0;
+}
+
+static void init_secondary_ports(struct gbe_priv *gbe_dev,
+ struct device_node *node)
+{
+ struct device *dev = gbe_dev->dev;
+ phy_interface_t phy_mode;
+ struct gbe_priv **priv;
+ struct device_node *port;
+ struct gbe_slave *slave;
+ bool mac_phy_link = false;
+
+ for_each_child_of_node(node, port) {
+ slave = devm_kzalloc(dev, sizeof(*slave), GFP_KERNEL);
+ if (!slave) {
+ dev_err(dev, "memomry alloc failed for secondary port(%s), skipping...\n",
+ port->name);
+ continue;
+ }
+
+ if (init_slave(gbe_dev, slave, port)) {
+ dev_err(dev, "Failed to initialize secondary port(%s), skipping...\n",
+ port->name);
+ devm_kfree(dev, slave);
+ continue;
+ }
+
+ gbe_sgmii_config(gbe_dev, slave);
+ gbe_port_reset(slave);
+ gbe_port_config(gbe_dev, slave, gbe_dev->rx_packet_max);
+ list_add_tail(&slave->slave_list, &gbe_dev->secondary_slaves);
+ gbe_dev->num_slaves++;
+ if ((slave->link_interface == SGMII_LINK_MAC_PHY) ||
+ (slave->link_interface == XGMII_LINK_MAC_PHY))
+ mac_phy_link = true;
+
+ slave->open = true;
+ }
+
+ /* of_phy_connect() is needed only for MAC-PHY interface */
+ if (!mac_phy_link)
+ return;
+
+ /* Allocate dummy netdev device for attaching to phy device */
+ gbe_dev->dummy_ndev = alloc_netdev(sizeof(gbe_dev), "dummy",
+ ether_setup);
+ if (!gbe_dev->dummy_ndev) {
+ dev_err(dev, "Failed to allocate dummy netdev for secondary ports, skipping phy_connect()...\n");
+ return;
+ }
+ priv = netdev_priv(gbe_dev->dummy_ndev);
+ *priv = gbe_dev;
+
+ if (slave->link_interface == SGMII_LINK_MAC_PHY) {
+ phy_mode = PHY_INTERFACE_MODE_SGMII;
+ slave->phy_port_t = PORT_MII;
+ } else {
+ phy_mode = PHY_INTERFACE_MODE_NA;
+ slave->phy_port_t = PORT_FIBRE;
+ }
+
+ for_each_sec_slave(slave, gbe_dev) {
+ if ((slave->link_interface != SGMII_LINK_MAC_PHY) &&
+ (slave->link_interface != XGMII_LINK_MAC_PHY))
+ continue;
+ slave->phy =
+ of_phy_connect(gbe_dev->dummy_ndev,
+ slave->phy_node,
+ gbe_adjust_link_sec_slaves,
+ 0, phy_mode);
+ if (IS_ERR_OR_NULL(slave->phy)) {
+ dev_err(dev, "phy not found for slave %d\n",
+ slave->slave_num);
+ slave->phy = NULL;
+ } else {
+ dev_dbg(dev, "phy found: id is: 0x%s\n",
+ dev_name(&slave->phy->dev));
+ phy_start(slave->phy);
+ phy_read_status(slave->phy);
+ }
+ }
+ return;
+}
+
+static void free_secondary_ports(struct gbe_priv *gbe_dev)
+{
+ struct gbe_slave *slave;
+
+ for (;;) {
+ slave = first_sec_slave(gbe_dev);
+ if (!slave)
+ break;
+ if (slave->phy)
+ phy_disconnect(slave->phy);
+ list_del(&slave->slave_list);
+ }
+ if (gbe_dev->dummy_ndev)
+ free_netdev(gbe_dev->dummy_ndev);
+}
+
+static int set_xgbe_ethss10_priv(struct gbe_priv *gbe_dev,
+ struct device_node *node)
+{
+ struct resource res;
+ void __iomem *regs;
+ int ret, i;
+
+ ret = of_address_to_resource(node, 0, &res);
+ if (ret) {
+ dev_err(gbe_dev->dev, "Can't translate of node(%s) address for xgbe subsystem regs\n",
+ node->name);
+ return ret;
+ }
+
+ regs = devm_ioremap_resource(gbe_dev->dev, &res);
+ if (IS_ERR(regs)) {
+ dev_err(gbe_dev->dev, "Failed to map xgbe register base\n");
+ return PTR_ERR(regs);
+ }
+ gbe_dev->ss_regs = regs;
+
+ ret = of_address_to_resource(node, XGBE_SERDES_REG_INDEX, &res);
+ if (ret) {
+ dev_err(gbe_dev->dev, "Can't translate of node(%s) address for xgbe serdes regs\n",
+ node->name);
+ return ret;
+ }
+
+ regs = devm_ioremap_resource(gbe_dev->dev, &res);
+ if (IS_ERR(regs)) {
+ dev_err(gbe_dev->dev, "Failed to map xgbe serdes register base\n");
+ return PTR_ERR(regs);
+ }
+ gbe_dev->xgbe_serdes_regs = regs;
+
+ gbe_dev->hw_stats = devm_kzalloc(gbe_dev->dev,
+ XGBE10_NUM_STAT_ENTRIES *
+ XGBE10_NUM_SLAVES * sizeof(u64),
+ GFP_KERNEL);
+ if (!gbe_dev->hw_stats) {
+ dev_err(gbe_dev->dev, "hw_stats memory allocation failed\n");
+ return -ENOMEM;
+ }
+
+ gbe_dev->ss_version = XGBE_SS_VERSION_10;
+ gbe_dev->sgmii_port_regs = regs + XGBE10_SGMII_MODULE_OFFSET;
+ gbe_dev->switch_regs = regs + XGBE10_SWITCH_MODULE_OFFSET;
+ gbe_dev->host_port_regs = regs + XGBE10_HOST_PORT_OFFSET;
+
+ for (i = 0; i < XGBE10_NUM_HW_STATS_MOD; i++)
+ gbe_dev->hw_stats_regs[i] = regs + XGBE10_HW_STATS_OFFSET +
+ (GBE_HW_STATS_REG_MAP_SZ * i);
+
+ gbe_dev->ale_reg = regs + XGBE10_ALE_OFFSET;
+ gbe_dev->ale_ports = XGBE10_NUM_ALE_PORTS;
+ gbe_dev->host_port = XGBE10_HOST_PORT_NUM;
+ gbe_dev->ale_entries = XGBE10_NUM_ALE_ENTRIES;
+ gbe_dev->et_stats = xgbe10_et_stats;
+ gbe_dev->num_et_stats = ARRAY_SIZE(xgbe10_et_stats);
+
+ /* Subsystem registers */
+ XGBE_SET_REG_OFS(gbe_dev, ss_regs, id_ver);
+ XGBE_SET_REG_OFS(gbe_dev, ss_regs, control);
+
+ /* Switch module registers */
+ XGBE_SET_REG_OFS(gbe_dev, switch_regs, id_ver);
+ XGBE_SET_REG_OFS(gbe_dev, switch_regs, control);
+ XGBE_SET_REG_OFS(gbe_dev, switch_regs, ptype);
+ XGBE_SET_REG_OFS(gbe_dev, switch_regs, stat_port_en);
+ XGBE_SET_REG_OFS(gbe_dev, switch_regs, flow_control);
+
+ /* Host port registers */
+ XGBE_SET_REG_OFS(gbe_dev, host_port_regs, port_vlan);
+ XGBE_SET_REG_OFS(gbe_dev, host_port_regs, tx_pri_map);
+ XGBE_SET_REG_OFS(gbe_dev, host_port_regs, rx_maxlen);
+ return 0;
+}
+
+static int set_gbe_ethss14_priv(struct gbe_priv *gbe_dev,
+ struct device_node *node)
+{
+ struct resource res;
+ void __iomem *regs;
+ int ret, i;
+ u32 ver;
+
+ ret = of_address_to_resource(node, 0, &res);
+ if (ret) {
+ dev_err(gbe_dev->dev, "Can't translate of node(%s) address\n",
+ node->name);
+ return ret;
+ }
+
+ regs = devm_ioremap_resource(gbe_dev->dev, &res);
+ if (IS_ERR(regs)) {
+ dev_err(gbe_dev->dev, "Failed to map gbe register base\n");
+ return PTR_ERR(regs);
+ }
+ gbe_dev->ss_regs = regs;
+
+ ver = readl_relaxed(gbe_dev->ss_regs);
+ if (ver != GBE_SS_VERSION_14) {
+ dev_err(gbe_dev->dev, "unknown GBE subsystem version 0x%08x\n",
+ ver);
+ return -ENODEV;
+ }
+
+ gbe_dev->hw_stats = devm_kzalloc(gbe_dev->dev,
+ GBE13_NUM_HW_STAT_ENTRIES *
+ GBE13_NUM_SLAVES * sizeof(u64),
+ GFP_KERNEL);
+ if (!gbe_dev->hw_stats) {
+ dev_err(gbe_dev->dev, "hw_stats memory allocation failed\n");
+ return -ENOMEM;
+ }
+
+ gbe_dev->ss_version = GBE_SS_VERSION_14;
+ gbe_dev->sgmii_port_regs = regs + GBE13_SGMII_MODULE_OFFSET;
+ gbe_dev->sgmii_port34_regs = regs + GBE13_SGMII34_MODULE_OFFSET;
+ gbe_dev->switch_regs = regs + GBE13_SWITCH_MODULE_OFFSET;
+ gbe_dev->host_port_regs = regs + GBE13_HOST_PORT_OFFSET;
+
+ for (i = 0; i < GBE13_NUM_HW_STATS_MOD; i++)
+ gbe_dev->hw_stats_regs[i] = regs + GBE13_HW_STATS_OFFSET +
+ (GBE_HW_STATS_REG_MAP_SZ * i);
+
+ gbe_dev->ale_reg = regs + GBE13_ALE_OFFSET;
+ gbe_dev->ale_ports = GBE13_NUM_ALE_PORTS;
+ gbe_dev->host_port = GBE13_HOST_PORT_NUM;
+ gbe_dev->ale_entries = GBE13_NUM_ALE_ENTRIES;
+ gbe_dev->et_stats = gbe13_et_stats;
+ gbe_dev->num_et_stats = ARRAY_SIZE(gbe13_et_stats);
+
+ /* Subsystem registers */
+ GBE_SET_REG_OFS(gbe_dev, ss_regs, id_ver);
+
+ /* Switch module registers */
+ GBE_SET_REG_OFS(gbe_dev, switch_regs, id_ver);
+ GBE_SET_REG_OFS(gbe_dev, switch_regs, control);
+ GBE_SET_REG_OFS(gbe_dev, switch_regs, soft_reset);
+ GBE_SET_REG_OFS(gbe_dev, switch_regs, stat_port_en);
+ GBE_SET_REG_OFS(gbe_dev, switch_regs, ptype);
+ GBE_SET_REG_OFS(gbe_dev, switch_regs, flow_control);
+
+ /* Host port registers */
+ GBE_SET_REG_OFS(gbe_dev, host_port_regs, port_vlan);
+ GBE_SET_REG_OFS(gbe_dev, host_port_regs, rx_maxlen);
+ return 0;
+}
+
+static int gbe_probe(struct netcp_device *netcp_device, struct device *dev,
+ struct device_node *node, void **inst_priv)
+{
+ struct device_node *interfaces, *interface;
+ struct device_node *secondary_ports;
+ struct cpsw_ale_params ale_params;
+ struct gbe_priv *gbe_dev;
+ u32 slave_num;
+ int ret = 0;
+
+ if (!node) {
+ dev_err(dev, "device tree info unavailable\n");
+ return -ENODEV;
+ }
+
+ gbe_dev = devm_kzalloc(dev, sizeof(struct gbe_priv), GFP_KERNEL);
+ if (!gbe_dev) {
+ dev_err(dev, "gbe_dev memory allocation failed\n");
+ return -ENOMEM;
+ }
+
+ gbe_dev->dev = dev;
+ gbe_dev->netcp_device = netcp_device;
+ gbe_dev->rx_packet_max = NETCP_MAX_FRAME_SIZE;
+
+ /* init the hw stats lock */
+ spin_lock_init(&gbe_dev->hw_stats_lock);
+
+ if (of_find_property(node, "enable-ale", NULL)) {
+ gbe_dev->enable_ale = true;
+ dev_info(dev, "ALE enabled\n");
+ } else {
+ gbe_dev->enable_ale = false;
+ dev_dbg(dev, "ALE bypass enabled*\n");
+ }
+
+ ret = of_property_read_u32(node, "tx-queue",
+ &gbe_dev->tx_queue_id);
+ if (ret < 0) {
+ dev_err(dev, "missing tx_queue parameter\n");
+ gbe_dev->tx_queue_id = GBE_TX_QUEUE;
+ }
+
+ ret = of_property_read_u32(node, "tx-channel",
+ &gbe_dev->dma_chan_id);
+ if (ret < 0) {
+ dev_err(dev, "missing \"tx-channel\" parameter\n");
+ ret = -ENODEV;
+ goto quit;
+ }
+
+ if (!strcmp(node->name, "gbe")) {
+ ret = set_gbe_ethss14_priv(gbe_dev, node);
+ if (ret)
+ goto quit;
+ } else if (!strcmp(node->name, "xgbe")) {
+ ret = set_xgbe_ethss10_priv(gbe_dev, node);
+ if (ret)
+ goto quit;
+ ret = netcp_xgbe_serdes_init(gbe_dev->xgbe_serdes_regs,
+ gbe_dev->ss_regs);
+ if (ret)
+ goto quit;
+ } else {
+ dev_err(dev, "unknown GBE node(%s)\n", node->name);
+ ret = -ENODEV;
+ goto quit;
+ }
+
+ interfaces = of_get_child_by_name(node, "interfaces");
+ if (!interfaces)
+ dev_err(dev, "could not find interfaces\n");
+
+ ret = netcp_txpipe_init(&gbe_dev->tx_pipe, netcp_device,
+ gbe_dev->dma_chan_id, gbe_dev->tx_queue_id);
+ if (ret)
+ goto quit;
+
+ ret = netcp_txpipe_open(&gbe_dev->tx_pipe);
+ if (ret)
+ goto quit;
+
+ /* Create network interfaces */
+ INIT_LIST_HEAD(&gbe_dev->gbe_intf_head);
+ for_each_child_of_node(interfaces, interface) {
+ ret = of_property_read_u32(interface, "slave-port", &slave_num);
+ if (ret) {
+ dev_err(dev, "missing slave-port parameter, skipping interface configuration for %s\n",
+ interface->name);
+ continue;
+ }
+ gbe_dev->num_slaves++;
+ }
+
+ if (!gbe_dev->num_slaves)
+ dev_warn(dev, "No network interface configured\n");
+
+ /* Initialize Secondary slave ports */
+ secondary_ports = of_get_child_by_name(node, "secondary-slave-ports");
+ INIT_LIST_HEAD(&gbe_dev->secondary_slaves);
+ if (secondary_ports)
+ init_secondary_ports(gbe_dev, secondary_ports);
+ of_node_put(secondary_ports);
+
+ if (!gbe_dev->num_slaves) {
+ dev_err(dev, "No network interface or secondary ports configured\n");
+ ret = -ENODEV;
+ goto quit;
+ }
+
+ memset(&ale_params, 0, sizeof(ale_params));
+ ale_params.dev = gbe_dev->dev;
+ ale_params.ale_regs = gbe_dev->ale_reg;
+ ale_params.ale_ageout = GBE_DEFAULT_ALE_AGEOUT;
+ ale_params.ale_entries = gbe_dev->ale_entries;
+ ale_params.ale_ports = gbe_dev->ale_ports;
+
+ gbe_dev->ale = cpsw_ale_create(&ale_params);
+ if (!gbe_dev->ale) {
+ dev_err(gbe_dev->dev, "error initializing ale engine\n");
+ ret = -ENODEV;
+ goto quit;
+ } else {
+ dev_dbg(gbe_dev->dev, "Created a gbe ale engine\n");
+ }
+
+ /* initialize host port */
+ gbe_init_host_port(gbe_dev);
+
+ init_timer(&gbe_dev->timer);
+ gbe_dev->timer.data = (unsigned long)gbe_dev;
+ gbe_dev->timer.function = netcp_ethss_timer;
+ gbe_dev->timer.expires = jiffies + GBE_TIMER_INTERVAL;
+ add_timer(&gbe_dev->timer);
+ *inst_priv = gbe_dev;
+ return 0;
+
+quit:
+ if (gbe_dev->hw_stats)
+ devm_kfree(dev, gbe_dev->hw_stats);
+ if (gbe_dev->ale)
+ cpsw_ale_destroy(gbe_dev->ale);
+ if (gbe_dev->ss_regs)
+ devm_iounmap(dev, gbe_dev->ss_regs);
+ if (interfaces)
+ of_node_put(interfaces);
+ devm_kfree(dev, gbe_dev);
+ return ret;
+}
+
+static int gbe_attach(void *inst_priv, struct net_device *ndev,
+ struct device_node *node, void **intf_priv)
+{
+ struct gbe_priv *gbe_dev = inst_priv;
+ struct gbe_intf *gbe_intf;
+ int ret;
+
+ if (!node) {
+ dev_err(gbe_dev->dev, "interface node not available\n");
+ return -ENODEV;
+ }
+
+ gbe_intf = devm_kzalloc(gbe_dev->dev, sizeof(*gbe_intf), GFP_KERNEL);
+ if (!gbe_intf) {
+ dev_err(gbe_dev->dev, "gbe interface memory allocation failed\n");
+ return -ENOMEM;
+ }
+ gbe_intf->ndev = ndev;
+ gbe_intf->dev = gbe_dev->dev;
+ gbe_intf->gbe_dev = gbe_dev;
+
+ gbe_intf->slave = devm_kzalloc(gbe_dev->dev,
+ sizeof(*gbe_intf->slave),
+ GFP_KERNEL);
+ if (!gbe_intf->slave) {
+ dev_err(gbe_dev->dev, "gbe interface slave memory allocation failed\n");
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ if (init_slave(gbe_dev, gbe_intf->slave, node)) {
+ ret = -ENODEV;
+ goto fail;
+ }
+
+ gbe_intf->tx_pipe = gbe_dev->tx_pipe;
+ SET_ETHTOOL_OPS(ndev, &keystone_ethtool_ops);
+ list_add_tail(&gbe_intf->gbe_intf_list, &gbe_dev->gbe_intf_head);
+ *intf_priv = gbe_intf;
+ return 0;
+
+fail:
+ if (gbe_intf->slave)
+ devm_kfree(gbe_dev->dev, gbe_intf->slave);
+ if (gbe_intf)
+ devm_kfree(gbe_dev->dev, gbe_intf);
+ return ret;
+}
+
+static int gbe_release(void *intf_priv)
+{
+ struct gbe_intf *gbe_intf = intf_priv;
+
+ SET_ETHTOOL_OPS(gbe_intf->ndev, NULL);
+ list_del(&gbe_intf->gbe_intf_list);
+ devm_kfree(gbe_intf->dev, gbe_intf->slave);
+ devm_kfree(gbe_intf->dev, gbe_intf);
+ return 0;
+}
+
+static int gbe_remove(struct netcp_device *netcp_device, void *inst_priv)
+{
+ struct gbe_priv *gbe_dev = inst_priv;
+
+ del_timer_sync(&gbe_dev->timer);
+ cpsw_ale_stop(gbe_dev->ale);
+ cpsw_ale_destroy(gbe_dev->ale);
+ netcp_txpipe_close(&gbe_dev->tx_pipe);
+ free_secondary_ports(gbe_dev);
+
+ if (!list_empty(&gbe_dev->gbe_intf_head))
+ dev_alert(gbe_dev->dev, "unreleased ethss interfaces present\n");
+
+ devm_kfree(gbe_dev->dev, gbe_dev->hw_stats);
+ devm_iounmap(gbe_dev->dev, gbe_dev->ss_regs);
+ memset(gbe_dev, 0x00, sizeof(*gbe_dev));
+ devm_kfree(gbe_dev->dev, gbe_dev);
+ return 0;
+}
+
+static struct netcp_module gbe_module = {
+ .name = GBE_MODULE_NAME,
+ .owner = THIS_MODULE,
+ .primary = true,
+ .probe = gbe_probe,
+ .open = gbe_open,
+ .close = gbe_close,
+ .remove = gbe_remove,
+ .attach = gbe_attach,
+ .release = gbe_release,
+ .add_addr = gbe_add_addr,
+ .del_addr = gbe_del_addr,
+ .add_vid = gbe_add_vid,
+ .del_vid = gbe_del_vid,
+ .ioctl = gbe_ioctl,
+};
+
+static struct netcp_module xgbe_module = {
+ .name = XGBE_MODULE_NAME,
+ .owner = THIS_MODULE,
+ .primary = true,
+ .probe = gbe_probe,
+ .open = gbe_open,
+ .close = gbe_close,
+ .remove = gbe_remove,
+ .attach = gbe_attach,
+ .release = gbe_release,
+ .add_addr = gbe_add_addr,
+ .del_addr = gbe_del_addr,
+ .add_vid = gbe_add_vid,
+ .del_vid = gbe_del_vid,
+ .ioctl = gbe_ioctl,
+};
+
+static int __init keystone_gbe_init(void)
+{
+ int ret;
+
+ ret = netcp_register_module(&gbe_module);
+ if (ret)
+ return ret;
+
+ ret = netcp_register_module(&xgbe_module);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+module_init(keystone_gbe_init);
+
+static void __exit keystone_gbe_exit(void)
+{
+ netcp_unregister_module(&gbe_module);
+ netcp_unregister_module(&xgbe_module);
+}
+module_exit(keystone_gbe_exit);
diff --git a/drivers/net/ethernet/ti/netcp_sgmii.c b/drivers/net/ethernet/ti/netcp_sgmii.c
new file mode 100644
index 0000000..55a5d61
--- /dev/null
+++ b/drivers/net/ethernet/ti/netcp_sgmii.c
@@ -0,0 +1,130 @@
+/*
+ * SGMI module initialisation
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated
+ * Authors: Sandeep Nair <[email protected]>
+ * Sandeep Paulraj <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include "netcp.h"
+
+#define SGMII_REG_STATUS_LOCK BIT(4)
+#define SGMII_REG_STATUS_LINK BIT(0)
+#define SGMII_REG_STATUS_AUTONEG BIT(2)
+#define SGMII_REG_CONTROL_AUTONEG BIT(0)
+
+#define SGMII23_OFFSET(x) ((x - 2) * 0x100)
+#define SGMII_OFFSET(x) ((x <= 1) ? (x * 0x100) : (SGMII23_OFFSET(x)))
+
+/* SGMII registers */
+#define SGMII_SRESET_REG(x) (SGMII_OFFSET(x) + 0x004)
+#define SGMII_CTL_REG(x) (SGMII_OFFSET(x) + 0x010)
+#define SGMII_STATUS_REG(x) (SGMII_OFFSET(x) + 0x014)
+#define SGMII_MRADV_REG(x) (SGMII_OFFSET(x) + 0x018)
+
+static inline void sgmii_write_reg(void __iomem *base, int reg, u32 val)
+{
+ writel_relaxed(val, base + reg);
+}
+
+static inline u32 sgmii_read_reg(void __iomem *base, int reg)
+{
+ return readl_relaxed(base + reg);
+}
+
+static inline void sgmii_write_reg_bit(void __iomem *base, int reg, u32 val)
+{
+ writel_relaxed((readl_relaxed(base + reg) | val), base + reg);
+}
+
+/* port is 0 based */
+int netcp_sgmii_reset(void __iomem *sgmii_ofs, int port)
+{
+ /* Soft reset */
+ sgmii_write_reg_bit(sgmii_ofs, SGMII_SRESET_REG(port), 0x1);
+ while (sgmii_read_reg(sgmii_ofs, SGMII_SRESET_REG(port)) != 0x0)
+ ;
+ return 0;
+}
+
+int netcp_sgmii_get_port_link(void __iomem *sgmii_ofs, int port)
+{
+ u32 status = 0, link = 0;
+
+ status = sgmii_read_reg(sgmii_ofs, SGMII_STATUS_REG(port));
+ if ((status & SGMII_REG_STATUS_LINK) != 0)
+ link = 1;
+ return link;
+}
+
+int netcp_sgmii_config(void __iomem *sgmii_ofs, int port, u32 interface)
+{
+ unsigned int i, status, mask;
+ u32 mr_adv_ability;
+ u32 control;
+
+ switch (interface) {
+ case SGMII_LINK_MAC_MAC_AUTONEG:
+ mr_adv_ability = 0x9801;
+ control = 0x21;
+ break;
+
+ case SGMII_LINK_MAC_PHY:
+ case SGMII_LINK_MAC_PHY_NO_MDIO:
+ mr_adv_ability = 1;
+ control = 1;
+ break;
+
+ case SGMII_LINK_MAC_MAC_FORCED:
+ mr_adv_ability = 0x9801;
+ control = 0x20;
+ break;
+
+ case SGMII_LINK_MAC_FIBER:
+ mr_adv_ability = 0x20;
+ control = 0x1;
+ break;
+
+ default:
+ WARN_ONCE(1, "Invalid sgmii interface: %d\n", interface);
+ return -EINVAL;
+ }
+
+ sgmii_write_reg(sgmii_ofs, SGMII_CTL_REG(port), 0);
+
+ /* Wait for the SerDes pll to lock */
+ for (i = 0; i < 1000; i++) {
+ usleep_range(1000, 2000);
+ status = sgmii_read_reg(sgmii_ofs, SGMII_STATUS_REG(port));
+ if ((status & SGMII_REG_STATUS_LOCK) != 0)
+ break;
+ }
+
+ if ((status & SGMII_REG_STATUS_LOCK) == 0)
+ pr_err("serdes PLL not locked\n");
+
+ sgmii_write_reg(sgmii_ofs, SGMII_MRADV_REG(port), mr_adv_ability);
+ sgmii_write_reg(sgmii_ofs, SGMII_CTL_REG(port), control);
+
+ mask = SGMII_REG_STATUS_LINK;
+ if (control & SGMII_REG_CONTROL_AUTONEG)
+ mask |= SGMII_REG_STATUS_AUTONEG;
+
+ for (i = 0; i < 1000; i++) {
+ usleep_range(200, 500);
+ status = sgmii_read_reg(sgmii_ofs, SGMII_STATUS_REG(port));
+ if ((status & mask) == mask)
+ break;
+ }
+
+ return 0;
+}
diff --git a/drivers/net/ethernet/ti/netcp_xgbepcsr.c b/drivers/net/ethernet/ti/netcp_xgbepcsr.c
new file mode 100644
index 0000000..b0b3467
--- /dev/null
+++ b/drivers/net/ethernet/ti/netcp_xgbepcsr.c
@@ -0,0 +1,502 @@
+/*
+ * XGE PCSR module initialisation
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated
+ * Authors: Sandeep Nair <[email protected]>
+ * WingMan Kwok <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#include "netcp.h"
+
+/* XGBE registers */
+#define XGBE_CTRL_OFFSET 0x0c
+#define XGBE_SGMII_1_OFFSET 0x0114
+#define XGBE_SGMII_2_OFFSET 0x0214
+
+/* PCS-R registers */
+#define PCSR_CPU_CTRL_OFFSET 0x1fd0
+#define POR_EN BIT(29)
+
+#define reg_rmw(addr, value, mask) \
+ writel_relaxed(((readl_relaxed(addr) & (~(mask))) | \
+ (value & (mask))), (addr))
+
+/* bit mask of width w at offset s */
+#define MASK_WID_SH(w, s) (((1 << w) - 1) << s)
+
+/* shift value v to offset s */
+#define VAL_SH(v, s) (v << s)
+
+#define PHY_A(serdes) 0
+
+struct serdes_cfg {
+ u32 ofs;
+ u32 val;
+ u32 mask;
+};
+
+static struct serdes_cfg cfg_phyb_1p25g_156p25mhz_cmu0[] = {
+ {0x0000, 0x00800002, 0x00ff00ff},
+ {0x0014, 0x00003838, 0x0000ffff},
+ {0x0060, 0x1c44e438, 0xffffffff},
+ {0x0064, 0x00c18400, 0x00ffffff},
+ {0x0068, 0x17078200, 0xffffff00},
+ {0x006c, 0x00000014, 0x000000ff},
+ {0x0078, 0x0000c000, 0x0000ff00},
+ {0x0000, 0x00000003, 0x000000ff},
+};
+
+static struct serdes_cfg cfg_phyb_10p3125g_156p25mhz_cmu1[] = {
+ {0x0c00, 0x00030002, 0x00ff00ff},
+ {0x0c14, 0x00005252, 0x0000ffff},
+ {0x0c28, 0x80000000, 0xff000000},
+ {0x0c2c, 0x000000f6, 0x000000ff},
+ {0x0c3c, 0x04000405, 0xff00ffff},
+ {0x0c40, 0xc0800000, 0xffff0000},
+ {0x0c44, 0x5a202062, 0xffffffff},
+ {0x0c48, 0x40040424, 0xffffffff},
+ {0x0c4c, 0x00004002, 0x0000ffff},
+ {0x0c50, 0x19001c00, 0xff00ff00},
+ {0x0c54, 0x00002100, 0x0000ff00},
+ {0x0c58, 0x00000060, 0x000000ff},
+ {0x0c60, 0x80131e7c, 0xffffffff},
+ {0x0c64, 0x8400cb02, 0xff00ffff},
+ {0x0c68, 0x17078200, 0xffffff00},
+ {0x0c6c, 0x00000016, 0x000000ff},
+ {0x0c74, 0x00000400, 0x0000ff00},
+ {0x0c78, 0x0000c000, 0x0000ff00},
+ {0x0c00, 0x00000003, 0x000000ff},
+};
+
+static struct serdes_cfg cfg_phyb_10p3125g_16bit_lane[] = {
+ {0x0204, 0x00000080, 0x000000ff},
+ {0x0208, 0x0000920d, 0x0000ffff},
+ {0x0204, 0xfc000000, 0xff000000},
+ {0x0208, 0x00009104, 0x0000ffff},
+ {0x0210, 0x1a000000, 0xff000000},
+ {0x0214, 0x00006b58, 0x00ffffff},
+ {0x0218, 0x75800084, 0xffff00ff},
+ {0x022c, 0x00300000, 0x00ff0000},
+ {0x0230, 0x00003800, 0x0000ff00},
+ {0x024c, 0x008f0000, 0x00ff0000},
+ {0x0250, 0x30000000, 0xff000000},
+ {0x0260, 0x00000002, 0x000000ff},
+ {0x0264, 0x00000057, 0x000000ff},
+ {0x0268, 0x00575700, 0x00ffff00},
+ {0x0278, 0xff000000, 0xff000000},
+ {0x0280, 0x00500050, 0x00ff00ff},
+ {0x0284, 0x00001f15, 0x0000ffff},
+ {0x028c, 0x00006f00, 0x0000ff00},
+ {0x0294, 0x00000000, 0xffffff00},
+ {0x0298, 0x00002640, 0xff00ffff},
+ {0x029c, 0x00000003, 0x000000ff},
+ {0x02a4, 0x00000f13, 0x0000ffff},
+ {0x02a8, 0x0001b600, 0x00ffff00},
+ {0x0380, 0x00000030, 0x000000ff},
+ {0x03c0, 0x00000200, 0x0000ff00},
+ {0x03cc, 0x00000018, 0x000000ff},
+ {0x03cc, 0x00000000, 0x000000ff},
+};
+
+static struct serdes_cfg cfg_phyb_10p3125g_comlane[] = {
+ {0x0a00, 0x00000800, 0x0000ff00},
+ {0x0a84, 0x00000000, 0x000000ff},
+ {0x0a8c, 0x00130000, 0x00ff0000},
+ {0x0a90, 0x77a00000, 0xffff0000},
+ {0x0a94, 0x00007777, 0x0000ffff},
+ {0x0b08, 0x000f0000, 0xffff0000},
+ {0x0b0c, 0x000f0000, 0x00ffffff},
+ {0x0b10, 0xbe000000, 0xff000000},
+ {0x0b14, 0x000000ff, 0x000000ff},
+ {0x0b18, 0x00000014, 0x000000ff},
+ {0x0b5c, 0x981b0000, 0xffff0000},
+ {0x0b64, 0x00001100, 0x0000ff00},
+ {0x0b78, 0x00000c00, 0x0000ff00},
+ {0x0abc, 0xff000000, 0xff000000},
+ {0x0ac0, 0x0000008b, 0x000000ff},
+};
+
+static struct serdes_cfg cfg_cm_c1_c2[] = {
+ {0x0208, 0x00000000, 0x00000f00},
+ {0x0208, 0x00000000, 0x0000001f},
+ {0x0204, 0x00000000, 0x00040000},
+ {0x0208, 0x000000a0, 0x000000e0},
+};
+
+static inline void netcp_xgbe_serdes_cmu_init(void __iomem *serdes_regs)
+{
+ int i;
+
+ /* cmu0 setup */
+ for (i = 0; i < ARRAY_SIZE(cfg_phyb_1p25g_156p25mhz_cmu0); i++) {
+ reg_rmw(serdes_regs + cfg_phyb_1p25g_156p25mhz_cmu0[i].ofs,
+ cfg_phyb_1p25g_156p25mhz_cmu0[i].val,
+ cfg_phyb_1p25g_156p25mhz_cmu0[i].mask);
+ }
+
+ /* cmu1 setup */
+ for (i = 0; i < ARRAY_SIZE(cfg_phyb_10p3125g_156p25mhz_cmu1); i++) {
+ reg_rmw(serdes_regs + cfg_phyb_10p3125g_156p25mhz_cmu1[i].ofs,
+ cfg_phyb_10p3125g_156p25mhz_cmu1[i].val,
+ cfg_phyb_10p3125g_156p25mhz_cmu1[i].mask);
+ }
+}
+
+/* lane is 0 based */
+static inline void netcp_xgbe_serdes_lane_config(
+ void __iomem *serdes_regs, int lane)
+{
+ int i;
+
+ /* lane setup */
+ for (i = 0; i < ARRAY_SIZE(cfg_phyb_10p3125g_16bit_lane); i++) {
+ reg_rmw(serdes_regs +
+ cfg_phyb_10p3125g_16bit_lane[i].ofs +
+ (0x200 * lane),
+ cfg_phyb_10p3125g_16bit_lane[i].val,
+ cfg_phyb_10p3125g_16bit_lane[i].mask);
+ }
+
+ /* disable auto negotiation*/
+ reg_rmw(serdes_regs + (0x200 * lane) + 0x0380,
+ 0x00000000, 0x00000010);
+
+ /* disable link training */
+ reg_rmw(serdes_regs + (0x200 * lane) + 0x03c0,
+ 0x00000000, 0x00000200);
+}
+
+static inline void netcp_xgbe_serdes_com_enable(void __iomem *serdes_regs)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(cfg_phyb_10p3125g_comlane); i++) {
+ reg_rmw(serdes_regs + cfg_phyb_10p3125g_comlane[i].ofs,
+ cfg_phyb_10p3125g_comlane[i].val,
+ cfg_phyb_10p3125g_comlane[i].mask);
+ }
+}
+
+static inline void netcp_xgbe_serdes_lane_enable(
+ void __iomem *serdes_regs, int lane)
+{
+ /* Set Lane Control Rate */
+ writel_relaxed(0xe0e9e038, serdes_regs + 0x1fe0 + (4 * lane));
+}
+
+static inline void netcp_xgbe_serdes_phyb_rst_clr(void __iomem *serdes_regs)
+{
+ reg_rmw(serdes_regs + 0x0a00, 0x0000001f, 0x000000ff);
+}
+
+static inline void netcp_xgbe_serdes_pll_disable(void __iomem *serdes_regs)
+{
+ writel_relaxed(0x88000000, serdes_regs + 0x1ff4);
+}
+
+static inline void netcp_xgbe_serdes_pll_enable(void __iomem *serdes_regs)
+{
+ netcp_xgbe_serdes_phyb_rst_clr(serdes_regs);
+ writel_relaxed(0xee000000, serdes_regs + 0x1ff4);
+}
+
+static int netcp_xgbe_wait_pll_locked(void __iomem *sw_regs)
+{
+ unsigned long timeout;
+ int ret = 0;
+ u32 val_1, val_0;
+
+ timeout = jiffies + msecs_to_jiffies(500);
+ do {
+ val_0 = (readl_relaxed(sw_regs + XGBE_SGMII_1_OFFSET) & BIT(4));
+ val_1 = (readl_relaxed(sw_regs + XGBE_SGMII_2_OFFSET) & BIT(4));
+
+ if (val_1 && val_0)
+ return 0;
+
+ if (time_after(jiffies, timeout)) {
+ ret = -ETIMEDOUT;
+ break;
+ }
+
+ cpu_relax();
+ } while (true);
+
+ pr_err("XGBE serdes not locked: time out.\n");
+ return ret;
+}
+
+static inline void netcp_xgbe_serdes_enable_xgmii_port(void __iomem *sw_regs)
+{
+ writel_relaxed(0x03, sw_regs + XGBE_CTRL_OFFSET);
+}
+
+static u32 netcp_xgbe_serdes_read_tbus_val(void __iomem *serdes_regs)
+{
+ u32 tmp;
+
+ if (PHY_A(serdes_regs)) {
+ tmp = (readl(serdes_regs + 0x0ec) >> 24) & 0x0ff;
+ tmp |= ((readl(serdes_regs + 0x0fc) >> 16) & 0x00f00);
+ } else {
+ tmp = (readl(serdes_regs + 0x0f8) >> 16) & 0x0fff;
+ }
+
+ return tmp;
+}
+
+static void netcp_xgbe_serdes_write_tbus_addr(void __iomem *serdes_regs,
+ int select, int ofs)
+{
+ if (PHY_A(serdes_regs)) {
+ reg_rmw(serdes_regs + 0x0008, ((select << 5) + ofs) << 24,
+ ~0x00ffffff);
+ return;
+ }
+
+ /* For 2 lane Phy-B, lane0 is actually lane1 */
+ switch (select) {
+ case 1:
+ select = 2;
+ break;
+ case 2:
+ select = 3;
+ break;
+ default:
+ return;
+ }
+
+ reg_rmw(serdes_regs + 0x00fc, ((select << 8) + ofs) << 16, ~0xf800ffff);
+}
+
+static u32 netcp_xgbe_serdes_read_select_tbus(void __iomem *serdes_regs,
+ int select, int ofs)
+{
+ /* Set tbus address */
+ netcp_xgbe_serdes_write_tbus_addr(serdes_regs, select, ofs);
+ /* Get TBUS Value */
+ return netcp_xgbe_serdes_read_tbus_val(serdes_regs);
+}
+
+static void netcp_xgbe_serdes_reset_cdr(void __iomem *serdes_regs,
+ void __iomem *sig_detect_reg, int lane)
+{
+ u32 tmp, dlpf, tbus;
+
+ /*Get the DLPF values */
+ tmp = netcp_xgbe_serdes_read_select_tbus(
+ serdes_regs, lane + 1, 5);
+
+ dlpf = tmp >> 2;
+
+ if (dlpf < 400 || dlpf > 700) {
+ reg_rmw(sig_detect_reg, VAL_SH(2, 1), MASK_WID_SH(2, 1));
+ mdelay(1);
+ reg_rmw(sig_detect_reg, VAL_SH(0, 1), MASK_WID_SH(2, 1));
+ } else {
+ tbus = netcp_xgbe_serdes_read_select_tbus(serdes_regs, lane +
+ 1, 0xe);
+
+ pr_debug("XGBE: CDR centered, DLPF: %4d,%d,%d.\n",
+ tmp >> 2, tmp & 3, (tbus >> 2) & 3);
+ }
+}
+
+/* Call every 100 ms */
+static int netcp_xgbe_check_link_status(void __iomem *serdes_regs,
+ void __iomem *sw_regs, u32 lanes,
+ u32 *current_state, u32 *lane_down)
+{
+ void __iomem *pcsr_base = sw_regs + 0x0600;
+ void __iomem *sig_detect_reg;
+ u32 pcsr_rx_stat, blk_lock, blk_errs;
+ int loss, i, status = 1;
+
+ for (i = 0; i < lanes; i++) {
+ /* Get the Loss bit */
+ loss = readl(serdes_regs + 0x1fc0 + 0x20 + (i * 0x04)) & 0x1;
+
+ /* Get Block Errors and Block Lock bits */
+ pcsr_rx_stat = readl(pcsr_base + 0x0c + (i * 0x80));
+ blk_lock = (pcsr_rx_stat >> 30) & 0x1;
+ blk_errs = (pcsr_rx_stat >> 16) & 0x0ff;
+
+ /* Get Signal Detect Overlay Address */
+ sig_detect_reg = serdes_regs + (i * 0x200) + 0x200 + 0x04;
+
+ /* If Block errors maxed out, attempt recovery! */
+ if (blk_errs == 0x0ff)
+ blk_lock = 0;
+
+ switch (current_state[i]) {
+ case 0:
+ /* if good link lock the signal detect ON! */
+ if (!loss && blk_lock) {
+ pr_debug("XGBE PCSR Linked Lane: %d\n", i);
+ reg_rmw(sig_detect_reg, VAL_SH(3, 1),
+ MASK_WID_SH(2, 1));
+ current_state[i] = 1;
+ } else if (!blk_lock) {
+ /* if no lock, then reset CDR */
+ pr_debug("XGBE PCSR Recover Lane: %d\n", i);
+ netcp_xgbe_serdes_reset_cdr(serdes_regs,
+ sig_detect_reg, i);
+ }
+ break;
+
+ case 1:
+ if (!blk_lock) {
+ /* Link Lost? */
+ lane_down[i] = 1;
+ current_state[i] = 2;
+ }
+ break;
+
+ case 2:
+ if (blk_lock)
+ /* Nope just noise */
+ current_state[i] = 1;
+ else {
+ /* Lost the block lock, reset CDR if it is
+ * not centered and go back to sync state
+ */
+ netcp_xgbe_serdes_reset_cdr(serdes_regs,
+ sig_detect_reg, i);
+ current_state[i] = 0;
+ }
+ break;
+
+ default:
+ pr_err("XGBE: unknown current_state[%d] %d\n",
+ i, current_state[i]);
+ break;
+ }
+
+ if (blk_errs > 0) {
+ /* Reset the Error counts! */
+ reg_rmw(pcsr_base + 0x08 + (i * 0x80), VAL_SH(0x19, 0),
+ MASK_WID_SH(8, 0));
+
+ reg_rmw(pcsr_base + 0x08 + (i * 0x80), VAL_SH(0x00, 0),
+ MASK_WID_SH(8, 0));
+ }
+
+ status &= (current_state[i] == 1);
+ }
+
+ return status;
+}
+
+static int netcp_xgbe_serdes_check_lane(void __iomem *serdes_regs,
+ void __iomem *sw_regs)
+{
+ u32 current_state[2] = {0, 0};
+ int retries = 0, link_up;
+ u32 lane_down[2];
+
+ do {
+ lane_down[0] = 0;
+ lane_down[1] = 0;
+
+ link_up = netcp_xgbe_check_link_status(serdes_regs, sw_regs, 2,
+ current_state,
+ lane_down);
+
+ /* if we did not get link up then wait 100ms before calling
+ * it again
+ */
+ if (link_up)
+ break;
+
+ if (lane_down[0])
+ pr_debug("XGBE: detected link down on lane 0\n");
+
+ if (lane_down[1])
+ pr_debug("XGBE: detected link down on lane 1\n");
+
+ if (++retries > 1) {
+ pr_debug("XGBE: timeout waiting for serdes link up\n");
+ return -ETIMEDOUT;
+ }
+ mdelay(100);
+ } while (!link_up);
+
+ pr_debug("XGBE: PCSR link is up\n");
+ return 0;
+}
+
+static inline void netcp_xgbe_serdes_setup_cm_c1_c2(void __iomem *serdes_regs,
+ int lane, int cm, int c1,
+ int c2)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(cfg_cm_c1_c2); i++) {
+ reg_rmw(serdes_regs + cfg_cm_c1_c2[i].ofs + (0x200 * lane),
+ cfg_cm_c1_c2[i].val,
+ cfg_cm_c1_c2[i].mask);
+ }
+}
+
+static inline void netcp_xgbe_reset_serdes(void __iomem *serdes_regs)
+{
+ /* Toggle the POR_EN bit in CONFIG.CPU_CTRL */
+ /* enable POR_EN bit */
+ reg_rmw(serdes_regs + PCSR_CPU_CTRL_OFFSET, POR_EN, POR_EN);
+ usleep_range(10, 100);
+
+ /* disable POR_EN bit */
+ reg_rmw(serdes_regs + PCSR_CPU_CTRL_OFFSET, 0, POR_EN);
+ usleep_range(10, 100);
+}
+
+static int netcp_xgbe_serdes_config(void __iomem *serdes_regs,
+ void __iomem *sw_regs)
+{
+ u32 ret, i;
+
+ netcp_xgbe_serdes_pll_disable(serdes_regs);
+ netcp_xgbe_serdes_cmu_init(serdes_regs);
+
+ for (i = 0; i < 2; i++)
+ netcp_xgbe_serdes_lane_config(serdes_regs, i);
+
+ netcp_xgbe_serdes_com_enable(serdes_regs);
+ /* This is EVM + RTM-BOC specific */
+ for (i = 0; i < 2; i++)
+ netcp_xgbe_serdes_setup_cm_c1_c2(serdes_regs, i, 0, 0, 5);
+
+ netcp_xgbe_serdes_pll_enable(serdes_regs);
+ for (i = 0; i < 2; i++)
+ netcp_xgbe_serdes_lane_enable(serdes_regs, i);
+
+ /* SB PLL Status Poll */
+ ret = netcp_xgbe_wait_pll_locked(sw_regs);
+ if (ret)
+ return ret;
+
+ netcp_xgbe_serdes_enable_xgmii_port(sw_regs);
+ netcp_xgbe_serdes_check_lane(serdes_regs, sw_regs);
+ return ret;
+}
+
+int netcp_xgbe_serdes_init(void __iomem *serdes_regs, void __iomem *xgbe_regs)
+{
+ u32 val;
+
+ /* read COMLANE bits 4:0 */
+ val = readl_relaxed(serdes_regs + 0xa00);
+ if (val & 0x1f) {
+ pr_debug("XGBE: serdes already in operation - reset\n");
+ netcp_xgbe_reset_serdes(serdes_regs);
+ }
+ return netcp_xgbe_serdes_config(serdes_regs, xgbe_regs);
+}
--
1.7.9.5

2014-04-22 22:02:37

by Stephen Hemminger

[permalink] [raw]

Subject: Re: [PATCH 0/2] net: Add Keystone NetCP ethernet driver support

On Tue, 22 Apr 2014 17:21:13 -0400
Santosh Shilimkar <[email protected]> wrote:

> NetCP driver has a plug-in module architecture where each of the NetCP
> sub-modules exist as a loadable kernel module which plug in to the netcp
> core. These sub-modules are represented as "netcp-devices" in the dts
> bindings. It is mandatory to have the ethernet switch sub-module for
> the ethernet interface to be operational. Any other sub-module like the
> PA is optional.

Where is the implementation of these modules. You need to include
this as separate patch set. Also the hooks for these modules should all
be EXPORT_SYMBOL_GPL() to disallow proprietary modules.

2014-04-22 23:56:52

by Santosh Shilimkar

[permalink] [raw]

Subject: Re: [PATCH 0/2] net: Add Keystone NetCP ethernet driver support

On Tuesday 22 April 2014 06:02 PM, Stephen Hemminger wrote:
> On Tue, 22 Apr 2014 17:21:13 -0400
> Santosh Shilimkar <[email protected]> wrote:
>
>> NetCP driver has a plug-in module architecture where each of the NetCP
>> sub-modules exist as a loadable kernel module which plug in to the netcp
>> core. These sub-modules are represented as "netcp-devices" in the dts
>> bindings. It is mandatory to have the ethernet switch sub-module for
>> the ethernet interface to be operational. Any other sub-module like the
>> PA is optional.
>
> Where is the implementation of these modules. You need to include
> this as separate patch set. Also the hooks for these modules should all
> be EXPORT_SYMBOL_GPL() to disallow proprietary modules.
>
There is no proprietary issue and all the hooks will be GPL. The plan is
to add them in another patch-set once the core driver gets merged. They need
some work to make them upstream ready.

Regards,
Santosh

2014-04-24 16:47:49

by David Miller

[permalink] [raw]

Subject: Re: [PATCH 2/2] net: Add Keystone NetCP ethernet driver

From: Santosh Shilimkar <[email protected]>
Date: Tue, 22 Apr 2014 17:21:15 -0400

> +struct netcp_tx_pipe {
> + struct netcp_device *netcp_device;
> + void *dma_queue;

Indent *dma_queue the same as the other struct members.

> + unsigned dma_queue_id;

Use explicit "unsigned int".

> + unsigned dma_chan_id;

Likewise.

> +struct netcp_addr {
> + struct netcp_intf *netcp;
> + unsigned char addr[MAX_ADDR_LEN];

If this is just an ethernet driver, ETH_ALEN is more appropriate here.

> + unsigned tx_compl_qid;

Explicit "unsigned int" please. I'm not going to point out all of the other
instances, audit your entire submission for this problem please.

> +static inline u32 *netcp_push_psdata(struct netcp_packet *p_info,
> + unsigned bytes)
> +{
> + u32 *buf;
> + unsigned words;

Do not use tabs between the type and the variable name in local variable
declarations.

Please audit for and fix this in your entire submission.

> +static inline u32 hwval_to_host(bool big_endian, u32 hwval)
> +{
> + if (big_endian)
> + return be32_to_cpu(hwval);
> + else
> + return le32_to_cpu(hwval);
> +}

You're much better off having a set of methods, one for big endian and
one for little endian, that just straight line codes the appropriate endian
accesses.

These conditionals peppered all over the place are just ugly.

2014-04-24 21:05:22

by Santosh Shilimkar

[permalink] [raw]

Subject: Re: [PATCH 2/2] net: Add Keystone NetCP ethernet driver

On Thursday 24 April 2014 12:47 PM, David Miller wrote:
> From: Santosh Shilimkar <[email protected]>
> Date: Tue, 22 Apr 2014 17:21:15 -0400
>
>> +struct netcp_tx_pipe {
>> + struct netcp_device *netcp_device;
>> + void *dma_queue;
>
> Indent *dma_queue the same as the other struct members.
>
sure
>> + unsigned dma_queue_id;
>
> Use explicit "unsigned int".
>
>> + unsigned dma_chan_id;
>
> Likewise.
>
ok

>> +struct netcp_addr {
>> + struct netcp_intf *netcp;
>> + unsigned char addr[MAX_ADDR_LEN];
>
> If this is just an ethernet driver, ETH_ALEN is more appropriate here.
>
Yep. Will use ETH_ALEN

>> + unsigned tx_compl_qid;
>
> Explicit "unsigned int" please. I'm not going to point out all of the other
> instances, audit your entire submission for this problem please.
>
Thats true... Will fix all instances of those.

>> +static inline u32 *netcp_push_psdata(struct netcp_packet *p_info,
>> + unsigned bytes)
>> +{
>> + u32 *buf;
>> + unsigned words;
>
> Do not use tabs between the type and the variable name in local variable
> declarations.
>
ok

> Please audit for and fix this in your entire submission.
>
Will Do.

>> +static inline u32 hwval_to_host(bool big_endian, u32 hwval)
>> +{
>> + if (big_endian)
>> + return be32_to_cpu(hwval);
>> + else
>> + return le32_to_cpu(hwval);
>> +}
>
> You're much better off having a set of methods, one for big endian and
> one for little endian, that just straight line codes the appropriate endian
> accesses.
>
good idea.

> These conditionals peppered all over the place are just ugly.
>
Agree. Will try to fit into some logical functions.

Thanks for the review David !!

regards,
Santosh