diff options
Diffstat (limited to 'target/linux/ipq40xx/files-5.4/drivers/net/ethernet/qualcomm/essedma/edma_axi.c')
| -rw-r--r-- | target/linux/ipq40xx/files-5.4/drivers/net/ethernet/qualcomm/essedma/edma_axi.c | 1363 |
1 files changed, 1363 insertions, 0 deletions
diff --git a/target/linux/ipq40xx/files-5.4/drivers/net/ethernet/qualcomm/essedma/edma_axi.c b/target/linux/ipq40xx/files-5.4/drivers/net/ethernet/qualcomm/essedma/edma_axi.c new file mode 100644 index 0000000000..db5eac2f03 --- /dev/null +++ b/target/linux/ipq40xx/files-5.4/drivers/net/ethernet/qualcomm/essedma/edma_axi.c @@ -0,0 +1,1363 @@ +/* + * 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 (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_TX + | NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_SG | + NETIF_F_TSO | NETIF_F_TSO6 | 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_TSO6 | + NETIF_F_GRO; + edma_netdev[i]->vlan_features = NETIF_F_HW_CSUM | NETIF_F_SG | + NETIF_F_TSO | NETIF_F_TSO6 | + NETIF_F_GRO; + edma_netdev[i]->wanted_features = NETIF_F_HW_CSUM | NETIF_F_SG | + NETIF_F_TSO | NETIF_F_TSO6 | + NETIF_F_GRO; + +#ifdef CONFIG_RFS_ACCEL + edma_netdev[i]->features |= NETIF_F_RXHASH | NETIF_F_NTUPLE; + edma_netdev[i]->hw_features |= NETIF_F_RXHASH | NETIF_F_NTUPLE; + edma_netdev[i]->vlan_features |= NETIF_F_RXHASH | NETIF_F_NTUPLE; + edma_netdev[i]->wanted_features |= NETIF_F_RXHASH | 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"); |