--- /dev/null
+/*
+ * Copyright (c) 2014 - 2016, The Linux Foundation. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for
+ * any purpose with or without fee is hereby granted, provided that the
+ * above copyright notice and this permission notice appear in all copies.
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <linux/cpu_rmap.h>
+#include <linux/of.h>
+#include <linux/of_net.h>
+#include <linux/timer.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
+#include <linux/clk.h>
+#include <linux/string.h>
+#include <linux/reset.h>
+#include "edma.h"
+#include "ess_edma.h"
+
+/* Weight round robin and virtual QID mask */
+#define EDMA_WRR_VID_SCTL_MASK 0xffff
+
+/* Weight round robin and virtual QID shift */
+#define EDMA_WRR_VID_SCTL_SHIFT 16
+
+char edma_axi_driver_name[] = "ess_edma";
+static const u32 default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE |
+ NETIF_MSG_LINK | NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP;
+
+static u32 edma_hw_addr;
+
+char edma_tx_irq[16][64];
+char edma_rx_irq[8][64];
+struct net_device *edma_netdev[EDMA_MAX_PORTID_SUPPORTED];
+static u16 tx_start[4] = {EDMA_TXQ_START_CORE0, EDMA_TXQ_START_CORE1,
+ EDMA_TXQ_START_CORE2, EDMA_TXQ_START_CORE3};
+static u32 tx_mask[4] = {EDMA_TXQ_IRQ_MASK_CORE0, EDMA_TXQ_IRQ_MASK_CORE1,
+ EDMA_TXQ_IRQ_MASK_CORE2, EDMA_TXQ_IRQ_MASK_CORE3};
+
+static u32 edma_default_ltag __read_mostly = EDMA_LAN_DEFAULT_VLAN;
+static u32 edma_default_wtag __read_mostly = EDMA_WAN_DEFAULT_VLAN;
+static u32 edma_default_group1_vtag __read_mostly = EDMA_DEFAULT_GROUP1_VLAN;
+static u32 edma_default_group2_vtag __read_mostly = EDMA_DEFAULT_GROUP2_VLAN;
+static u32 edma_default_group3_vtag __read_mostly = EDMA_DEFAULT_GROUP3_VLAN;
+static u32 edma_default_group4_vtag __read_mostly = EDMA_DEFAULT_GROUP4_VLAN;
+static u32 edma_default_group5_vtag __read_mostly = EDMA_DEFAULT_GROUP5_VLAN;
+static u32 edma_rss_idt_val = EDMA_RSS_IDT_VALUE;
+static u32 edma_rss_idt_idx;
+
+static int edma_weight_assigned_to_q __read_mostly;
+static int edma_queue_to_virtual_q __read_mostly;
+static bool edma_enable_rstp __read_mostly;
+static int edma_athr_hdr_eth_type __read_mostly;
+
+static int page_mode;
+module_param(page_mode, int, 0);
+MODULE_PARM_DESC(page_mode, "enable page mode");
+
+static int overwrite_mode;
+module_param(overwrite_mode, int, 0);
+MODULE_PARM_DESC(overwrite_mode, "overwrite default page_mode setting");
+
+static int jumbo_mru = EDMA_RX_HEAD_BUFF_SIZE;
+module_param(jumbo_mru, int, 0);
+MODULE_PARM_DESC(jumbo_mru, "enable fraglist support");
+
+static int num_rxq = 4;
+module_param(num_rxq, int, 0);
+MODULE_PARM_DESC(num_rxq, "change the number of rx queues");
+
+void edma_write_reg(u16 reg_addr, u32 reg_value)
+{
+ writel(reg_value, ((void __iomem *)(edma_hw_addr + reg_addr)));
+}
+
+void edma_read_reg(u16 reg_addr, volatile u32 *reg_value)
+{
+ *reg_value = readl((void __iomem *)(edma_hw_addr + reg_addr));
+}
+
+static void ess_write_reg(struct edma_common_info *edma, u16 reg_addr, u32 reg_value)
+{
+ writel(reg_value, ((void __iomem *)
+ ((unsigned long)edma->ess_hw_addr + reg_addr)));
+}
+
+static void ess_read_reg(struct edma_common_info *edma, u16 reg_addr,
+ volatile u32 *reg_value)
+{
+ *reg_value = readl((void __iomem *)
+ ((unsigned long)edma->ess_hw_addr + reg_addr));
+}
+
+static int ess_reset(struct edma_common_info *edma)
+{
+ struct device_node *switch_node = NULL;
+ struct reset_control *ess_rst;
+ u32 regval;
+
+ switch_node = of_find_node_by_name(NULL, "ess-switch");
+ if (!switch_node) {
+ pr_err("switch-node not found\n");
+ return -EINVAL;
+ }
+
+ ess_rst = of_reset_control_get(switch_node, "ess_rst");
+ of_node_put(switch_node);
+
+ if (IS_ERR(ess_rst)) {
+ pr_err("failed to find ess_rst!\n");
+ return -ENOENT;
+ }
+
+ reset_control_assert(ess_rst);
+ msleep(10);
+ reset_control_deassert(ess_rst);
+ msleep(100);
+ reset_control_put(ess_rst);
+
+ /* Enable only port 5 <--> port 0
+ * bits 0:6 bitmap of ports it can fwd to */
+#define SET_PORT_BMP(r,v) \
+ ess_read_reg(edma, r, ®val); \
+ ess_write_reg(edma, r, ((regval & ~0x3F) | v));
+
+ SET_PORT_BMP(ESS_PORT0_LOOKUP_CTRL,0x20);
+ SET_PORT_BMP(ESS_PORT1_LOOKUP_CTRL,0x00);
+ SET_PORT_BMP(ESS_PORT2_LOOKUP_CTRL,0x00);
+ SET_PORT_BMP(ESS_PORT3_LOOKUP_CTRL,0x00);
+ SET_PORT_BMP(ESS_PORT4_LOOKUP_CTRL,0x00);
+ SET_PORT_BMP(ESS_PORT5_LOOKUP_CTRL,0x01);
+ ess_write_reg(edma, ESS_RGMII_CTRL, 0x400);
+ ess_write_reg(edma, ESS_PORT0_STATUS, ESS_PORT_1G_FDX);
+ ess_write_reg(edma, ESS_PORT5_STATUS, ESS_PORT_1G_FDX);
+ ess_write_reg(edma, ESS_PORT0_HEADER_CTRL, 0);
+#undef SET_PORT_BMP
+
+ /* forward multicast and broadcast frames to CPU */
+ ess_write_reg(edma, ESS_FWD_CTRL1,
+ (ESS_PORTS_ALL << ESS_FWD_CTRL1_UC_FLOOD_S) |
+ (ESS_PORTS_ALL << ESS_FWD_CTRL1_MC_FLOOD_S) |
+ (ESS_PORTS_ALL << ESS_FWD_CTRL1_BC_FLOOD_S));
+
+ return 0;
+}
+
+void ess_set_port_status_speed(struct edma_common_info *edma,
+ struct phy_device *phydev, uint8_t port_id)
+{
+ uint16_t reg_off = ESS_PORT0_STATUS + (4 * port_id);
+ uint32_t reg_val = 0;
+
+ ess_read_reg(edma, reg_off, ®_val);
+
+ /* reset the speed bits [0:1] */
+ reg_val &= ~ESS_PORT_STATUS_SPEED_INV;
+
+ /* set the new speed */
+ switch(phydev->speed) {
+ case SPEED_1000: reg_val |= ESS_PORT_STATUS_SPEED_1000; break;
+ case SPEED_100: reg_val |= ESS_PORT_STATUS_SPEED_100; break;
+ case SPEED_10: reg_val |= ESS_PORT_STATUS_SPEED_10; break;
+ default: reg_val |= ESS_PORT_STATUS_SPEED_INV; break;
+ }
+
+ /* check full/half duplex */
+ if (phydev->duplex) {
+ reg_val |= ESS_PORT_STATUS_DUPLEX_MODE;
+ } else {
+ reg_val &= ~ESS_PORT_STATUS_DUPLEX_MODE;
+ }
+
+ ess_write_reg(edma, reg_off, reg_val);
+}
+
+/* edma_change_tx_coalesce()
+ * change tx interrupt moderation timer
+ */
+void edma_change_tx_coalesce(int usecs)
+{
+ u32 reg_value;
+
+ /* Here, we right shift the value from the user by 1, this is
+ * done because IMT resolution timer is 2usecs. 1 count
+ * of this register corresponds to 2 usecs.
+ */
+ edma_read_reg(EDMA_REG_IRQ_MODRT_TIMER_INIT, ®_value);
+ reg_value = ((reg_value & 0xffff) | ((usecs >> 1) << 16));
+ edma_write_reg(EDMA_REG_IRQ_MODRT_TIMER_INIT, reg_value);
+}
+
+/* edma_change_rx_coalesce()
+ * change rx interrupt moderation timer
+ */
+void edma_change_rx_coalesce(int usecs)
+{
+ u32 reg_value;
+
+ /* Here, we right shift the value from the user by 1, this is
+ * done because IMT resolution timer is 2usecs. 1 count
+ * of this register corresponds to 2 usecs.
+ */
+ edma_read_reg(EDMA_REG_IRQ_MODRT_TIMER_INIT, ®_value);
+ reg_value = ((reg_value & 0xffff0000) | (usecs >> 1));
+ edma_write_reg(EDMA_REG_IRQ_MODRT_TIMER_INIT, reg_value);
+}
+
+/* edma_get_tx_rx_coalesce()
+ * Get tx/rx interrupt moderation value
+ */
+void edma_get_tx_rx_coalesce(u32 *reg_val)
+{
+ edma_read_reg(EDMA_REG_IRQ_MODRT_TIMER_INIT, reg_val);
+}
+
+void edma_read_append_stats(struct edma_common_info *edma_cinfo)
+{
+ uint32_t *p;
+ int i;
+ u32 stat;
+
+ spin_lock_bh(&edma_cinfo->stats_lock);
+ p = (uint32_t *)&(edma_cinfo->edma_ethstats);
+
+ for (i = 0; i < EDMA_MAX_TRANSMIT_QUEUE; i++) {
+ edma_read_reg(EDMA_REG_TX_STAT_PKT_Q(i), &stat);
+ *p += stat;
+ p++;
+ }
+
+ for (i = 0; i < EDMA_MAX_TRANSMIT_QUEUE; i++) {
+ edma_read_reg(EDMA_REG_TX_STAT_BYTE_Q(i), &stat);
+ *p += stat;
+ p++;
+ }
+
+ for (i = 0; i < EDMA_MAX_RECEIVE_QUEUE; i++) {
+ edma_read_reg(EDMA_REG_RX_STAT_PKT_Q(i), &stat);
+ *p += stat;
+ p++;
+ }
+
+ for (i = 0; i < EDMA_MAX_RECEIVE_QUEUE; i++) {
+ edma_read_reg(EDMA_REG_RX_STAT_BYTE_Q(i), &stat);
+ *p += stat;
+ p++;
+ }
+
+ spin_unlock_bh(&edma_cinfo->stats_lock);
+}
+
+static void edma_statistics_timer(struct timer_list *t)
+{
+ struct edma_common_info *edma_cinfo =
+ from_timer(edma_cinfo, t, edma_stats_timer);
+
+ edma_read_append_stats(edma_cinfo);
+
+ mod_timer(&edma_cinfo->edma_stats_timer, jiffies + 1*HZ);
+}
+
+static int edma_enable_stp_rstp(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ int ret;
+
+ ret = proc_dointvec(table, write, buffer, lenp, ppos);
+ if (write)
+ edma_set_stp_rstp(edma_enable_rstp);
+
+ return ret;
+}
+
+static int edma_ath_hdr_eth_type(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ int ret;
+
+ ret = proc_dointvec(table, write, buffer, lenp, ppos);
+ if (write)
+ edma_assign_ath_hdr_type(edma_athr_hdr_eth_type);
+
+ return ret;
+}
+
+static int edma_change_default_lan_vlan(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ struct edma_adapter *adapter;
+ int ret;
+
+ if (!edma_netdev[1]) {
+ pr_err("Netdevice for default_lan does not exist\n");
+ return -1;
+ }
+
+ adapter = netdev_priv(edma_netdev[1]);
+
+ ret = proc_dointvec(table, write, buffer, lenp, ppos);
+
+ if (write)
+ adapter->default_vlan_tag = edma_default_ltag;
+
+ return ret;
+}
+
+static int edma_change_default_wan_vlan(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ struct edma_adapter *adapter;
+ int ret;
+
+ if (!edma_netdev[0]) {
+ pr_err("Netdevice for default_wan does not exist\n");
+ return -1;
+ }
+
+ adapter = netdev_priv(edma_netdev[0]);
+
+ ret = proc_dointvec(table, write, buffer, lenp, ppos);
+
+ if (write)
+ adapter->default_vlan_tag = edma_default_wtag;
+
+ return ret;
+}
+
+static int edma_change_group1_vtag(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ struct edma_adapter *adapter;
+ struct edma_common_info *edma_cinfo;
+ int ret;
+
+ if (!edma_netdev[0]) {
+ pr_err("Netdevice for Group 1 does not exist\n");
+ return -1;
+ }
+
+ adapter = netdev_priv(edma_netdev[0]);
+ edma_cinfo = adapter->edma_cinfo;
+
+ ret = proc_dointvec(table, write, buffer, lenp, ppos);
+
+ if (write)
+ adapter->default_vlan_tag = edma_default_group1_vtag;
+
+ return ret;
+}
+
+static int edma_change_group2_vtag(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ struct edma_adapter *adapter;
+ struct edma_common_info *edma_cinfo;
+ int ret;
+
+ if (!edma_netdev[1]) {
+ pr_err("Netdevice for Group 2 does not exist\n");
+ return -1;
+ }
+
+ adapter = netdev_priv(edma_netdev[1]);
+ edma_cinfo = adapter->edma_cinfo;
+
+ ret = proc_dointvec(table, write, buffer, lenp, ppos);
+
+ if (write)
+ adapter->default_vlan_tag = edma_default_group2_vtag;
+
+ return ret;
+}
+
+static int edma_change_group3_vtag(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ struct edma_adapter *adapter;
+ struct edma_common_info *edma_cinfo;
+ int ret;
+
+ if (!edma_netdev[2]) {
+ pr_err("Netdevice for Group 3 does not exist\n");
+ return -1;
+ }
+
+ adapter = netdev_priv(edma_netdev[2]);
+ edma_cinfo = adapter->edma_cinfo;
+
+ ret = proc_dointvec(table, write, buffer, lenp, ppos);
+
+ if (write)
+ adapter->default_vlan_tag = edma_default_group3_vtag;
+
+ return ret;
+}
+
+static int edma_change_group4_vtag(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ struct edma_adapter *adapter;
+ struct edma_common_info *edma_cinfo;
+ int ret;
+
+ if (!edma_netdev[3]) {
+ pr_err("Netdevice for Group 4 does not exist\n");
+ return -1;
+ }
+
+ adapter = netdev_priv(edma_netdev[3]);
+ edma_cinfo = adapter->edma_cinfo;
+
+ ret = proc_dointvec(table, write, buffer, lenp, ppos);
+
+ if (write)
+ adapter->default_vlan_tag = edma_default_group4_vtag;
+
+ return ret;
+}
+
+static int edma_change_group5_vtag(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ struct edma_adapter *adapter;
+ struct edma_common_info *edma_cinfo;
+ int ret;
+
+ if (!edma_netdev[4]) {
+ pr_err("Netdevice for Group 5 does not exist\n");
+ return -1;
+ }
+
+ adapter = netdev_priv(edma_netdev[4]);
+ edma_cinfo = adapter->edma_cinfo;
+
+ ret = proc_dointvec(table, write, buffer, lenp, ppos);
+
+ if (write)
+ adapter->default_vlan_tag = edma_default_group5_vtag;
+
+ return ret;
+}
+
+static int edma_set_rss_idt_value(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ int ret;
+
+ ret = proc_dointvec(table, write, buffer, lenp, ppos);
+ if (write && !ret)
+ edma_write_reg(EDMA_REG_RSS_IDT(edma_rss_idt_idx),
+ edma_rss_idt_val);
+ return ret;
+}
+
+static int edma_set_rss_idt_idx(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ int ret;
+ u32 old_value = edma_rss_idt_idx;
+
+ ret = proc_dointvec(table, write, buffer, lenp, ppos);
+ if (!write || ret)
+ return ret;
+
+ if (edma_rss_idt_idx >= EDMA_NUM_IDT) {
+ pr_err("Invalid RSS indirection table index %d\n",
+ edma_rss_idt_idx);
+ edma_rss_idt_idx = old_value;
+ return -EINVAL;
+ }
+ return ret;
+}
+
+static int edma_weight_assigned_to_queues(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ int ret, queue_id, weight;
+ u32 reg_data, data, reg_addr;
+
+ ret = proc_dointvec(table, write, buffer, lenp, ppos);
+ if (write) {
+ queue_id = edma_weight_assigned_to_q & EDMA_WRR_VID_SCTL_MASK;
+ if (queue_id < 0 || queue_id > 15) {
+ pr_err("queue_id not within desired range\n");
+ return -EINVAL;
+ }
+
+ weight = edma_weight_assigned_to_q >> EDMA_WRR_VID_SCTL_SHIFT;
+ if (weight < 0 || weight > 0xF) {
+ pr_err("queue_id not within desired range\n");
+ return -EINVAL;
+ }
+
+ data = weight << EDMA_WRR_SHIFT(queue_id);
+
+ reg_addr = EDMA_REG_WRR_CTRL_Q0_Q3 + (queue_id & ~0x3);
+ edma_read_reg(reg_addr, ®_data);
+ reg_data &= ~(1 << EDMA_WRR_SHIFT(queue_id));
+ edma_write_reg(reg_addr, data | reg_data);
+ }
+
+ return ret;
+}
+
+static int edma_queue_to_virtual_queue_map(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ int ret, queue_id, virtual_qid;
+ u32 reg_data, data, reg_addr;
+
+ ret = proc_dointvec(table, write, buffer, lenp, ppos);
+ if (write) {
+ queue_id = edma_queue_to_virtual_q & EDMA_WRR_VID_SCTL_MASK;
+ if (queue_id < 0 || queue_id > 15) {
+ pr_err("queue_id not within desired range\n");
+ return -EINVAL;
+ }
+
+ virtual_qid = edma_queue_to_virtual_q >>
+ EDMA_WRR_VID_SCTL_SHIFT;
+ if (virtual_qid < 0 || virtual_qid > 8) {
+ pr_err("queue_id not within desired range\n");
+ return -EINVAL;
+ }
+
+ data = virtual_qid << EDMA_VQ_ID_SHIFT(queue_id);
+
+ reg_addr = EDMA_REG_VQ_CTRL0 + (queue_id & ~0x3);
+ edma_read_reg(reg_addr, ®_data);
+ reg_data &= ~(1 << EDMA_VQ_ID_SHIFT(queue_id));
+ edma_write_reg(reg_addr, data | reg_data);
+ }
+
+ return ret;
+}
+
+static struct ctl_table edma_table[] = {
+ {
+ .procname = "default_lan_tag",
+ .data = &edma_default_ltag,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = edma_change_default_lan_vlan
+ },
+ {
+ .procname = "default_wan_tag",
+ .data = &edma_default_wtag,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = edma_change_default_wan_vlan
+ },
+ {
+ .procname = "weight_assigned_to_queues",
+ .data = &edma_weight_assigned_to_q,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = edma_weight_assigned_to_queues
+ },
+ {
+ .procname = "queue_to_virtual_queue_map",
+ .data = &edma_queue_to_virtual_q,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = edma_queue_to_virtual_queue_map
+ },
+ {
+ .procname = "enable_stp_rstp",
+ .data = &edma_enable_rstp,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = edma_enable_stp_rstp
+ },
+ {
+ .procname = "athr_hdr_eth_type",
+ .data = &edma_athr_hdr_eth_type,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = edma_ath_hdr_eth_type
+ },
+ {
+ .procname = "default_group1_vlan_tag",
+ .data = &edma_default_group1_vtag,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = edma_change_group1_vtag
+ },
+ {
+ .procname = "default_group2_vlan_tag",
+ .data = &edma_default_group2_vtag,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = edma_change_group2_vtag
+ },
+ {
+ .procname = "default_group3_vlan_tag",
+ .data = &edma_default_group3_vtag,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = edma_change_group3_vtag
+ },
+ {
+ .procname = "default_group4_vlan_tag",
+ .data = &edma_default_group4_vtag,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = edma_change_group4_vtag
+ },
+ {
+ .procname = "default_group5_vlan_tag",
+ .data = &edma_default_group5_vtag,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = edma_change_group5_vtag
+ },
+ {
+ .procname = "edma_rss_idt_value",
+ .data = &edma_rss_idt_val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = edma_set_rss_idt_value
+ },
+ {
+ .procname = "edma_rss_idt_idx",
+ .data = &edma_rss_idt_idx,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = edma_set_rss_idt_idx
+ },
+ {}
+};
+
+static int ess_parse(struct edma_common_info *edma)
+{
+ struct device_node *switch_node;
+ int ret = -EINVAL;
+
+ switch_node = of_find_node_by_name(NULL, "ess-switch");
+ if (!switch_node) {
+ pr_err("cannot find ess-switch node\n");
+ goto out;
+ }
+
+ edma->ess_hw_addr = of_io_request_and_map(switch_node,
+ 0, KBUILD_MODNAME);
+ if (!edma->ess_hw_addr) {
+ pr_err("%s ioremap fail.", __func__);
+ goto out;
+ }
+
+ edma->ess_clk = of_clk_get_by_name(switch_node, "ess_clk");
+ ret = clk_prepare_enable(edma->ess_clk);
+out:
+ of_node_put(switch_node);
+ return ret;
+}
+
+/* edma_axi_netdev_ops
+ * Describe the operations supported by registered netdevices
+ *
+ * static const struct net_device_ops edma_axi_netdev_ops = {
+ * .ndo_open = edma_open,
+ * .ndo_stop = edma_close,
+ * .ndo_start_xmit = edma_xmit_frame,
+ * .ndo_set_mac_address = edma_set_mac_addr,
+ * }
+ */
+static const struct net_device_ops edma_axi_netdev_ops = {
+ .ndo_open = edma_open,
+ .ndo_stop = edma_close,
+ .ndo_start_xmit = edma_xmit,
+ .ndo_set_mac_address = edma_set_mac_addr,
+#ifdef CONFIG_RFS_ACCEL
+ .ndo_rx_flow_steer = edma_rx_flow_steer,
+ .ndo_register_rfs_filter = edma_register_rfs_filter,
+ .ndo_get_default_vlan_tag = edma_get_default_vlan_tag,
+#endif
+ .ndo_get_stats = edma_get_stats,
+};
+
+/* edma_axi_probe()
+ * Initialise an adapter identified by a platform_device structure.
+ *
+ * The OS initialization, configuring of the adapter private structure,
+ * and a hardware reset occur in the probe.
+ */
+static int edma_axi_probe(struct platform_device *pdev)
+{
+ struct edma_common_info *edma_cinfo;
+ struct edma_hw *hw;
+ struct edma_adapter *adapter[EDMA_MAX_PORTID_SUPPORTED];
+ struct resource *res;
+ struct device_node *np = pdev->dev.of_node;
+ struct device_node *pnp;
+ struct device_node *mdio_node = NULL;
+ struct platform_device *mdio_plat = NULL;
+ struct mii_bus *miibus = NULL;
+ struct edma_mdio_data *mdio_data = NULL;
+ int i, j, k, err = 0;
+ int portid_bmp;
+ int idx = 0, idx_mac = 0;
+
+ if (CONFIG_NR_CPUS != EDMA_CPU_CORES_SUPPORTED) {
+ dev_err(&pdev->dev, "Invalid CPU Cores\n");
+ return -EINVAL;
+ }
+
+ if ((num_rxq != 4) && (num_rxq != 8)) {
+ dev_err(&pdev->dev, "Invalid RX queue, edma probe failed\n");
+ return -EINVAL;
+ }
+ edma_cinfo = kzalloc(sizeof(struct edma_common_info), GFP_KERNEL);
+ if (!edma_cinfo) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+
+ edma_cinfo->pdev = pdev;
+
+ of_property_read_u32(np, "qcom,num_gmac", &edma_cinfo->num_gmac);
+ if (edma_cinfo->num_gmac > EDMA_MAX_PORTID_SUPPORTED) {
+ pr_err("Invalid DTSI Entry for qcom,num_gmac\n");
+ err = -EINVAL;
+ goto err_cinfo;
+ }
+
+ /* Initialize the netdev array before allocation
+ * to avoid double free
+ */
+ for (i = 0 ; i < edma_cinfo->num_gmac ; i++)
+ edma_netdev[i] = NULL;
+
+ for (i = 0 ; i < edma_cinfo->num_gmac ; i++) {
+ edma_netdev[i] = alloc_etherdev_mqs(sizeof(struct edma_adapter),
+ EDMA_NETDEV_TX_QUEUE, EDMA_NETDEV_RX_QUEUE);
+
+ if (!edma_netdev[i]) {
+ dev_err(&pdev->dev,
+ "net device alloc fails for index=%d\n", i);
+ err = -ENODEV;
+ goto err_ioremap;
+ }
+
+ SET_NETDEV_DEV(edma_netdev[i], &pdev->dev);
+ platform_set_drvdata(pdev, edma_netdev[i]);
+ edma_cinfo->netdev[i] = edma_netdev[i];
+ }
+
+ /* Fill ring details */
+ edma_cinfo->num_tx_queues = EDMA_MAX_TRANSMIT_QUEUE;
+ edma_cinfo->num_txq_per_core = (EDMA_MAX_TRANSMIT_QUEUE / 4);
+ edma_cinfo->tx_ring_count = EDMA_TX_RING_SIZE;
+
+ /* Update num rx queues based on module parameter */
+ edma_cinfo->num_rx_queues = num_rxq;
+ edma_cinfo->num_rxq_per_core = ((num_rxq == 4) ? 1 : 2);
+
+ edma_cinfo->rx_ring_count = EDMA_RX_RING_SIZE;
+
+ hw = &edma_cinfo->hw;
+
+ /* Fill HW defaults */
+ hw->tx_intr_mask = EDMA_TX_IMR_NORMAL_MASK;
+ hw->rx_intr_mask = EDMA_RX_IMR_NORMAL_MASK;
+
+ of_property_read_u32(np, "qcom,page-mode", &edma_cinfo->page_mode);
+ of_property_read_u32(np, "qcom,rx_head_buf_size",
+ &hw->rx_head_buff_size);
+
+ if (overwrite_mode) {
+ dev_info(&pdev->dev, "page mode overwritten");
+ edma_cinfo->page_mode = page_mode;
+ }
+
+ if (jumbo_mru)
+ edma_cinfo->fraglist_mode = 1;
+
+ if (edma_cinfo->page_mode)
+ hw->rx_head_buff_size = EDMA_RX_HEAD_BUFF_SIZE_JUMBO;
+ else if (edma_cinfo->fraglist_mode)
+ hw->rx_head_buff_size = jumbo_mru;
+ else if (!hw->rx_head_buff_size)
+ hw->rx_head_buff_size = EDMA_RX_HEAD_BUFF_SIZE;
+
+ hw->misc_intr_mask = 0;
+ hw->wol_intr_mask = 0;
+
+ hw->intr_clear_type = EDMA_INTR_CLEAR_TYPE;
+ hw->intr_sw_idx_w = EDMA_INTR_SW_IDX_W_TYPE;
+
+ /* configure RSS type to the different protocol that can be
+ * supported
+ */
+ hw->rss_type = EDMA_RSS_TYPE_IPV4TCP | EDMA_RSS_TYPE_IPV6_TCP |
+ EDMA_RSS_TYPE_IPV4_UDP | EDMA_RSS_TYPE_IPV6UDP |
+ EDMA_RSS_TYPE_IPV4 | EDMA_RSS_TYPE_IPV6;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ edma_cinfo->hw.hw_addr = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(edma_cinfo->hw.hw_addr)) {
+ err = PTR_ERR(edma_cinfo->hw.hw_addr);
+ goto err_ioremap;
+ }
+
+ edma_hw_addr = (u32)edma_cinfo->hw.hw_addr;
+
+ /* Parse tx queue interrupt number from device tree */
+ for (i = 0; i < edma_cinfo->num_tx_queues; i++)
+ edma_cinfo->tx_irq[i] = platform_get_irq(pdev, i);
+
+ /* Parse rx queue interrupt number from device tree
+ * Here we are setting j to point to the point where we
+ * left tx interrupt parsing(i.e 16) and run run the loop
+ * from 0 to 7 to parse rx interrupt number.
+ */
+ for (i = 0, j = edma_cinfo->num_tx_queues, k = 0;
+ i < edma_cinfo->num_rx_queues; i++) {
+ edma_cinfo->rx_irq[k] = platform_get_irq(pdev, j);
+ k += ((num_rxq == 4) ? 2 : 1);
+ j += ((num_rxq == 4) ? 2 : 1);
+ }
+
+ edma_cinfo->rx_head_buffer_len = edma_cinfo->hw.rx_head_buff_size;
+ edma_cinfo->rx_page_buffer_len = PAGE_SIZE;
+
+ err = edma_alloc_queues_tx(edma_cinfo);
+ if (err) {
+ dev_err(&pdev->dev, "Allocation of TX queue failed\n");
+ goto err_tx_qinit;
+ }
+
+ err = edma_alloc_queues_rx(edma_cinfo);
+ if (err) {
+ dev_err(&pdev->dev, "Allocation of RX queue failed\n");
+ goto err_rx_qinit;
+ }
+
+ err = edma_alloc_tx_rings(edma_cinfo);
+ if (err) {
+ dev_err(&pdev->dev, "Allocation of TX resources failed\n");
+ goto err_tx_rinit;
+ }
+
+ err = edma_alloc_rx_rings(edma_cinfo);
+ if (err) {
+ dev_err(&pdev->dev, "Allocation of RX resources failed\n");
+ goto err_rx_rinit;
+ }
+
+ /* Initialize netdev and netdev bitmap for transmit descriptor rings */
+ for (i = 0; i < edma_cinfo->num_tx_queues; i++) {
+ struct edma_tx_desc_ring *etdr = edma_cinfo->tpd_ring[i];
+ int j;
+
+ etdr->netdev_bmp = 0;
+ for (j = 0; j < EDMA_MAX_NETDEV_PER_QUEUE; j++) {
+ etdr->netdev[j] = NULL;
+ etdr->nq[j] = NULL;
+ }
+ }
+
+ if (of_property_read_bool(np, "qcom,mdio_supported")) {
+ mdio_node = of_find_compatible_node(NULL, NULL,
+ "qcom,ipq4019-mdio");
+ if (!mdio_node) {
+ dev_err(&pdev->dev, "cannot find mdio node by phandle");
+ err = -EIO;
+ goto err_mdiobus_init_fail;
+ }
+
+ mdio_plat = of_find_device_by_node(mdio_node);
+ if (!mdio_plat) {
+ dev_err(&pdev->dev,
+ "cannot find platform device from mdio node");
+ of_node_put(mdio_node);
+ err = -EIO;
+ goto err_mdiobus_init_fail;
+ }
+
+ mdio_data = dev_get_drvdata(&mdio_plat->dev);
+ if (!mdio_data) {
+ dev_err(&pdev->dev,
+ "cannot get mii bus reference from device data");
+ of_node_put(mdio_node);
+ err = -EIO;
+ goto err_mdiobus_init_fail;
+ }
+
+ miibus = mdio_data->mii_bus;
+ }
+
+ if (of_property_read_bool(np, "qcom,single-phy") &&
+ edma_cinfo->num_gmac == 1) {
+ err = ess_parse(edma_cinfo);
+ if (!err)
+ err = ess_reset(edma_cinfo);
+ if (err)
+ goto err_single_phy_init;
+ else
+ edma_cinfo->is_single_phy = true;
+ }
+
+ for_each_available_child_of_node(np, pnp) {
+ const char *mac_addr;
+
+ /* this check is needed if parent and daughter dts have
+ * different number of gmac nodes
+ */
+ if (idx_mac == edma_cinfo->num_gmac) {
+ of_node_put(np);
+ break;
+ }
+
+ mac_addr = of_get_mac_address(pnp);
+ if (!IS_ERR(mac_addr))
+ memcpy(edma_netdev[idx_mac]->dev_addr, mac_addr, ETH_ALEN);
+
+ idx_mac++;
+ }
+
+ /* Populate the adapter structure register the netdevice */
+ for (i = 0; i < edma_cinfo->num_gmac; i++) {
+ int k, m;
+
+ adapter[i] = netdev_priv(edma_netdev[i]);
+ adapter[i]->netdev = edma_netdev[i];
+ adapter[i]->pdev = pdev;
+ for (j = 0; j < CONFIG_NR_CPUS; j++) {
+ m = i % 2;
+ adapter[i]->tx_start_offset[j] =
+ ((j << EDMA_TX_CPU_START_SHIFT) + (m << 1));
+ /* Share the queues with available net-devices.
+ * For instance , with 5 net-devices
+ * eth0/eth2/eth4 will share q0,q1,q4,q5,q8,q9,q12,q13
+ * and eth1/eth3 will get the remaining.
+ */
+ for (k = adapter[i]->tx_start_offset[j]; k <
+ (adapter[i]->tx_start_offset[j] + 2); k++) {
+ if (edma_fill_netdev(edma_cinfo, k, i, j)) {
+ pr_err("Netdev overflow Error\n");
+ goto err_register;
+ }
+ }
+ }
+
+ adapter[i]->edma_cinfo = edma_cinfo;
+ edma_netdev[i]->netdev_ops = &edma_axi_netdev_ops;
+ edma_netdev[i]->max_mtu = 9000;
+ edma_netdev[i]->features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM
+ | NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_SG |
+ NETIF_F_TSO | NETIF_F_GRO;
+ edma_netdev[i]->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM |
+ NETIF_F_HW_VLAN_CTAG_RX
+ | NETIF_F_SG | NETIF_F_TSO | NETIF_F_GRO;
+ edma_netdev[i]->vlan_features = NETIF_F_HW_CSUM | NETIF_F_SG |
+ NETIF_F_TSO | NETIF_F_GRO;
+ edma_netdev[i]->wanted_features = NETIF_F_HW_CSUM | NETIF_F_SG |
+ NETIF_F_TSO | NETIF_F_GRO;
+
+#ifdef CONFIG_RFS_ACCEL
+ edma_netdev[i]->features |= NETIF_F_NTUPLE;
+ edma_netdev[i]->hw_features |= NETIF_F_NTUPLE;
+ edma_netdev[i]->vlan_features |= NETIF_F_NTUPLE;
+ edma_netdev[i]->wanted_features |= NETIF_F_NTUPLE;
+#endif
+ edma_set_ethtool_ops(edma_netdev[i]);
+
+ /* This just fill in some default MAC address
+ */
+ if (!is_valid_ether_addr(edma_netdev[i]->dev_addr)) {
+ random_ether_addr(edma_netdev[i]->dev_addr);
+ pr_info("EDMA using MAC@ - using");
+ pr_info("%02x:%02x:%02x:%02x:%02x:%02x\n",
+ *(edma_netdev[i]->dev_addr),
+ *(edma_netdev[i]->dev_addr + 1),
+ *(edma_netdev[i]->dev_addr + 2),
+ *(edma_netdev[i]->dev_addr + 3),
+ *(edma_netdev[i]->dev_addr + 4),
+ *(edma_netdev[i]->dev_addr + 5));
+ }
+
+ err = register_netdev(edma_netdev[i]);
+ if (err)
+ goto err_register;
+
+ /* carrier off reporting is important to
+ * ethtool even BEFORE open
+ */
+ netif_carrier_off(edma_netdev[i]);
+
+ /* Allocate reverse irq cpu mapping structure for
+ * receive queues
+ */
+#ifdef CONFIG_RFS_ACCEL
+ edma_netdev[i]->rx_cpu_rmap =
+ alloc_irq_cpu_rmap(EDMA_NETDEV_RX_QUEUE);
+ if (!edma_netdev[i]->rx_cpu_rmap) {
+ err = -ENOMEM;
+ goto err_rmap_alloc_fail;
+ }
+#endif
+ }
+
+ for (i = 0; i < EDMA_MAX_PORTID_BITMAP_INDEX; i++)
+ edma_cinfo->portid_netdev_lookup_tbl[i] = NULL;
+
+ for_each_available_child_of_node(np, pnp) {
+ const uint32_t *vlan_tag = NULL;
+ int len;
+
+ /* this check is needed if parent and daughter dts have
+ * different number of gmac nodes
+ */
+ if (idx == edma_cinfo->num_gmac)
+ break;
+
+ /* Populate port-id to netdev lookup table */
+ vlan_tag = of_get_property(pnp, "vlan_tag", &len);
+ if (!vlan_tag) {
+ pr_err("Vlan tag parsing Failed.\n");
+ goto err_rmap_alloc_fail;
+ }
+
+ adapter[idx]->default_vlan_tag = of_read_number(vlan_tag, 1);
+ vlan_tag++;
+ portid_bmp = of_read_number(vlan_tag, 1);
+ adapter[idx]->dp_bitmap = portid_bmp;
+
+ portid_bmp = portid_bmp >> 1; /* We ignore CPU Port bit 0 */
+ while (portid_bmp) {
+ int port_bit = ffs(portid_bmp);
+
+ if (port_bit > EDMA_MAX_PORTID_SUPPORTED)
+ goto err_rmap_alloc_fail;
+ edma_cinfo->portid_netdev_lookup_tbl[port_bit] =
+ edma_netdev[idx];
+ portid_bmp &= ~(1 << (port_bit - 1));
+ }
+
+ if (!of_property_read_u32(pnp, "qcom,poll_required",
+ &adapter[idx]->poll_required)) {
+ if (adapter[idx]->poll_required) {
+ of_property_read_u32(pnp, "qcom,phy_mdio_addr",
+ &adapter[idx]->phy_mdio_addr);
+ of_property_read_u32(pnp, "qcom,forced_speed",
+ &adapter[idx]->forced_speed);
+ of_property_read_u32(pnp, "qcom,forced_duplex",
+ &adapter[idx]->forced_duplex);
+
+ /* create a phyid using MDIO bus id
+ * and MDIO bus address
+ */
+ snprintf(adapter[idx]->phy_id,
+ MII_BUS_ID_SIZE + 3, PHY_ID_FMT,
+ miibus->id,
+ adapter[idx]->phy_mdio_addr);
+ }
+ } else {
+ adapter[idx]->poll_required = 0;
+ adapter[idx]->forced_speed = SPEED_1000;
+ adapter[idx]->forced_duplex = DUPLEX_FULL;
+ }
+
+ idx++;
+ }
+
+ edma_cinfo->edma_ctl_table_hdr = register_net_sysctl(&init_net,
+ "net/edma",
+ edma_table);
+ if (!edma_cinfo->edma_ctl_table_hdr) {
+ dev_err(&pdev->dev, "edma sysctl table hdr not registered\n");
+ goto err_unregister_sysctl_tbl;
+ }
+
+ /* Disable all 16 Tx and 8 rx irqs */
+ edma_irq_disable(edma_cinfo);
+
+ err = edma_reset(edma_cinfo);
+ if (err) {
+ err = -EIO;
+ goto err_reset;
+ }
+
+ /* populate per_core_info, do a napi_Add, request 16 TX irqs,
+ * 8 RX irqs, do a napi enable
+ */
+ for (i = 0; i < CONFIG_NR_CPUS; i++) {
+ u8 rx_start;
+
+ edma_cinfo->edma_percpu_info[i].napi.state = 0;
+
+ netif_napi_add(edma_netdev[0],
+ &edma_cinfo->edma_percpu_info[i].napi,
+ edma_poll, 64);
+ napi_enable(&edma_cinfo->edma_percpu_info[i].napi);
+ edma_cinfo->edma_percpu_info[i].tx_mask = tx_mask[i];
+ edma_cinfo->edma_percpu_info[i].rx_mask = EDMA_RX_PER_CPU_MASK
+ << (i << EDMA_RX_PER_CPU_MASK_SHIFT);
+ edma_cinfo->edma_percpu_info[i].tx_start = tx_start[i];
+ edma_cinfo->edma_percpu_info[i].rx_start =
+ i << EDMA_RX_CPU_START_SHIFT;
+ rx_start = i << EDMA_RX_CPU_START_SHIFT;
+ edma_cinfo->edma_percpu_info[i].tx_status = 0;
+ edma_cinfo->edma_percpu_info[i].rx_status = 0;
+ edma_cinfo->edma_percpu_info[i].edma_cinfo = edma_cinfo;
+
+ /* Request irq per core */
+ for (j = edma_cinfo->edma_percpu_info[i].tx_start;
+ j < tx_start[i] + 4; j++) {
+ sprintf(&edma_tx_irq[j][0], "edma_eth_tx%d", j);
+ err = request_irq(edma_cinfo->tx_irq[j],
+ edma_interrupt,
+ 0,
+ &edma_tx_irq[j][0],
+ &edma_cinfo->edma_percpu_info[i]);
+ if (err)
+ goto err_reset;
+ }
+
+ for (j = edma_cinfo->edma_percpu_info[i].rx_start;
+ j < (rx_start +
+ ((edma_cinfo->num_rx_queues == 4) ? 1 : 2));
+ j++) {
+ sprintf(&edma_rx_irq[j][0], "edma_eth_rx%d", j);
+ err = request_irq(edma_cinfo->rx_irq[j],
+ edma_interrupt,
+ 0,
+ &edma_rx_irq[j][0],
+ &edma_cinfo->edma_percpu_info[i]);
+ if (err)
+ goto err_reset;
+ }
+
+#ifdef CONFIG_RFS_ACCEL
+ for (j = edma_cinfo->edma_percpu_info[i].rx_start;
+ j < rx_start + 2; j += 2) {
+ err = irq_cpu_rmap_add(edma_netdev[0]->rx_cpu_rmap,
+ edma_cinfo->rx_irq[j]);
+ if (err)
+ goto err_rmap_add_fail;
+ }
+#endif
+ }
+
+ /* Used to clear interrupt status, allocate rx buffer,
+ * configure edma descriptors registers
+ */
+ err = edma_configure(edma_cinfo);
+ if (err) {
+ err = -EIO;
+ goto err_configure;
+ }
+
+ /* Configure RSS indirection table.
+ * 128 hash will be configured in the following
+ * pattern: hash{0,1,2,3} = {Q0,Q2,Q4,Q6} respectively
+ * and so on
+ */
+ for (i = 0; i < EDMA_NUM_IDT; i++)
+ edma_write_reg(EDMA_REG_RSS_IDT(i), EDMA_RSS_IDT_VALUE);
+
+ /* Configure load balance mapping table.
+ * 4 table entry will be configured according to the
+ * following pattern: load_balance{0,1,2,3} = {Q0,Q1,Q3,Q4}
+ * respectively.
+ */
+ edma_write_reg(EDMA_REG_LB_RING, EDMA_LB_REG_VALUE);
+
+ /* Configure Virtual queue for Tx rings
+ * User can also change this value runtime through
+ * a sysctl
+ */
+ edma_write_reg(EDMA_REG_VQ_CTRL0, EDMA_VQ_REG_VALUE);
+ edma_write_reg(EDMA_REG_VQ_CTRL1, EDMA_VQ_REG_VALUE);
+
+ /* Configure Max AXI Burst write size to 128 bytes*/
+ edma_write_reg(EDMA_REG_AXIW_CTRL_MAXWRSIZE,
+ EDMA_AXIW_MAXWRSIZE_VALUE);
+
+ /* Enable All 16 tx and 8 rx irq mask */
+ edma_irq_enable(edma_cinfo);
+ edma_enable_tx_ctrl(&edma_cinfo->hw);
+ edma_enable_rx_ctrl(&edma_cinfo->hw);
+
+ for (i = 0; i < edma_cinfo->num_gmac; i++) {
+ if (adapter[i]->poll_required) {
+ int phy_mode = of_get_phy_mode(np);
+
+ if (phy_mode < 0)
+ phy_mode = PHY_INTERFACE_MODE_SGMII;
+ adapter[i]->phydev =
+ phy_connect(edma_netdev[i],
+ (const char *)adapter[i]->phy_id,
+ &edma_adjust_link,
+ phy_mode);
+ if (IS_ERR(adapter[i]->phydev)) {
+ dev_dbg(&pdev->dev, "PHY attach FAIL");
+ err = -EIO;
+ goto edma_phy_attach_fail;
+ } else {
+ linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT,
+ adapter[i]->phydev->advertising);
+ linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
+ adapter[i]->phydev->advertising);
+ linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT,
+ adapter[i]->phydev->supported);
+ linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
+ adapter[i]->phydev->supported);
+ }
+ } else {
+ adapter[i]->phydev = NULL;
+ }
+ }
+
+ spin_lock_init(&edma_cinfo->stats_lock);
+
+ timer_setup(&edma_cinfo->edma_stats_timer, edma_statistics_timer, 0);
+ mod_timer(&edma_cinfo->edma_stats_timer, jiffies + 1*HZ);
+
+ return 0;
+
+edma_phy_attach_fail:
+ miibus = NULL;
+err_configure:
+#ifdef CONFIG_RFS_ACCEL
+ for (i = 0; i < edma_cinfo->num_gmac; i++) {
+ free_irq_cpu_rmap(adapter[i]->netdev->rx_cpu_rmap);
+ adapter[i]->netdev->rx_cpu_rmap = NULL;
+ }
+#endif
+err_rmap_add_fail:
+ edma_free_irqs(adapter[0]);
+ for (i = 0; i < CONFIG_NR_CPUS; i++)
+ napi_disable(&edma_cinfo->edma_percpu_info[i].napi);
+err_reset:
+err_unregister_sysctl_tbl:
+err_rmap_alloc_fail:
+ for (i = 0; i < edma_cinfo->num_gmac; i++)
+ unregister_netdev(edma_netdev[i]);
+err_register:
+err_single_phy_init:
+ iounmap(edma_cinfo->ess_hw_addr);
+ clk_disable_unprepare(edma_cinfo->ess_clk);
+err_mdiobus_init_fail:
+ edma_free_rx_rings(edma_cinfo);
+err_rx_rinit:
+ edma_free_tx_rings(edma_cinfo);
+err_tx_rinit:
+ edma_free_queues(edma_cinfo);
+err_rx_qinit:
+err_tx_qinit:
+ iounmap(edma_cinfo->hw.hw_addr);
+err_ioremap:
+ for (i = 0; i < edma_cinfo->num_gmac; i++) {
+ if (edma_netdev[i])
+ free_netdev(edma_netdev[i]);
+ }
+err_cinfo:
+ kfree(edma_cinfo);
+err_alloc:
+ return err;
+}
+
+/* edma_axi_remove()
+ * Device Removal Routine
+ *
+ * edma_axi_remove is called by the platform subsystem to alert the driver
+ * that it should release a platform device.
+ */
+static int edma_axi_remove(struct platform_device *pdev)
+{
+ struct edma_adapter *adapter = netdev_priv(edma_netdev[0]);
+ struct edma_common_info *edma_cinfo = adapter->edma_cinfo;
+ struct edma_hw *hw = &edma_cinfo->hw;
+ int i;
+
+ for (i = 0; i < edma_cinfo->num_gmac; i++)
+ unregister_netdev(edma_netdev[i]);
+
+ edma_stop_rx_tx(hw);
+ for (i = 0; i < CONFIG_NR_CPUS; i++)
+ napi_disable(&edma_cinfo->edma_percpu_info[i].napi);
+
+ edma_irq_disable(edma_cinfo);
+ edma_write_reg(EDMA_REG_RX_ISR, 0xff);
+ edma_write_reg(EDMA_REG_TX_ISR, 0xffff);
+#ifdef CONFIG_RFS_ACCEL
+ for (i = 0; i < edma_cinfo->num_gmac; i++) {
+ free_irq_cpu_rmap(edma_netdev[i]->rx_cpu_rmap);
+ edma_netdev[i]->rx_cpu_rmap = NULL;
+ }
+#endif
+
+ for (i = 0; i < edma_cinfo->num_gmac; i++) {
+ struct edma_adapter *adapter = netdev_priv(edma_netdev[i]);
+
+ if (adapter->phydev)
+ phy_disconnect(adapter->phydev);
+ }
+
+ del_timer_sync(&edma_cinfo->edma_stats_timer);
+ edma_free_irqs(adapter);
+ unregister_net_sysctl_table(edma_cinfo->edma_ctl_table_hdr);
+ iounmap(edma_cinfo->ess_hw_addr);
+ clk_disable_unprepare(edma_cinfo->ess_clk);
+ edma_free_tx_resources(edma_cinfo);
+ edma_free_rx_resources(edma_cinfo);
+ edma_free_tx_rings(edma_cinfo);
+ edma_free_rx_rings(edma_cinfo);
+ edma_free_queues(edma_cinfo);
+ for (i = 0; i < edma_cinfo->num_gmac; i++)
+ free_netdev(edma_netdev[i]);
+
+ kfree(edma_cinfo);
+
+ return 0;
+}
+
+static const struct of_device_id edma_of_mtable[] = {
+ {.compatible = "qcom,ess-edma" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, edma_of_mtable);
+
+static struct platform_driver edma_axi_driver = {
+ .driver = {
+ .name = edma_axi_driver_name,
+ .of_match_table = edma_of_mtable,
+ },
+ .probe = edma_axi_probe,
+ .remove = edma_axi_remove,
+};
+
+module_platform_driver(edma_axi_driver);
+
+MODULE_AUTHOR("Qualcomm Atheros Inc");
+MODULE_DESCRIPTION("QCA ESS EDMA driver");
+MODULE_LICENSE("GPL");
projects / openwrt / openwrt.git / blobdiff