| /* |
| * FUJITSU Extended Socket Network Device driver |
| * Copyright (c) 2015 FUJITSU LIMITED |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms and conditions of the GNU General Public License, |
| * version 2, as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along with |
| * this program; if not, see <http://www.gnu.org/licenses/>. |
| * |
| * The full GNU General Public License is included in this distribution in |
| * the file called "COPYING". |
| * |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/types.h> |
| #include <linux/nls.h> |
| #include <linux/platform_device.h> |
| #include <linux/netdevice.h> |
| #include <linux/interrupt.h> |
| |
| #include "fjes.h" |
| |
| #define MAJ 1 |
| #define MIN 1 |
| #define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) |
| #define DRV_NAME "fjes" |
| char fjes_driver_name[] = DRV_NAME; |
| char fjes_driver_version[] = DRV_VERSION; |
| static const char fjes_driver_string[] = |
| "FUJITSU Extended Socket Network Device Driver"; |
| static const char fjes_copyright[] = |
| "Copyright (c) 2015 FUJITSU LIMITED"; |
| |
| MODULE_AUTHOR("Taku Izumi <izumi.taku@jp.fujitsu.com>"); |
| MODULE_DESCRIPTION("FUJITSU Extended Socket Network Device Driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION(DRV_VERSION); |
| |
| static int fjes_request_irq(struct fjes_adapter *); |
| static void fjes_free_irq(struct fjes_adapter *); |
| |
| static int fjes_open(struct net_device *); |
| static int fjes_close(struct net_device *); |
| static int fjes_setup_resources(struct fjes_adapter *); |
| static void fjes_free_resources(struct fjes_adapter *); |
| static netdev_tx_t fjes_xmit_frame(struct sk_buff *, struct net_device *); |
| static void fjes_raise_intr_rxdata_task(struct work_struct *); |
| static void fjes_tx_stall_task(struct work_struct *); |
| static void fjes_force_close_task(struct work_struct *); |
| static irqreturn_t fjes_intr(int, void*); |
| static struct rtnl_link_stats64 * |
| fjes_get_stats64(struct net_device *, struct rtnl_link_stats64 *); |
| static int fjes_change_mtu(struct net_device *, int); |
| static int fjes_vlan_rx_add_vid(struct net_device *, __be16 proto, u16); |
| static int fjes_vlan_rx_kill_vid(struct net_device *, __be16 proto, u16); |
| static void fjes_tx_retry(struct net_device *); |
| |
| static int fjes_acpi_add(struct acpi_device *); |
| static int fjes_acpi_remove(struct acpi_device *); |
| static acpi_status fjes_get_acpi_resource(struct acpi_resource *, void*); |
| |
| static int fjes_probe(struct platform_device *); |
| static int fjes_remove(struct platform_device *); |
| |
| static int fjes_sw_init(struct fjes_adapter *); |
| static void fjes_netdev_setup(struct net_device *); |
| static void fjes_irq_watch_task(struct work_struct *); |
| static void fjes_watch_unshare_task(struct work_struct *); |
| static void fjes_rx_irq(struct fjes_adapter *, int); |
| static int fjes_poll(struct napi_struct *, int); |
| |
| static const struct acpi_device_id fjes_acpi_ids[] = { |
| {"PNP0C02", 0}, |
| {"", 0}, |
| }; |
| MODULE_DEVICE_TABLE(acpi, fjes_acpi_ids); |
| |
| static struct acpi_driver fjes_acpi_driver = { |
| .name = DRV_NAME, |
| .class = DRV_NAME, |
| .owner = THIS_MODULE, |
| .ids = fjes_acpi_ids, |
| .ops = { |
| .add = fjes_acpi_add, |
| .remove = fjes_acpi_remove, |
| }, |
| }; |
| |
| static struct platform_driver fjes_driver = { |
| .driver = { |
| .name = DRV_NAME, |
| .owner = THIS_MODULE, |
| }, |
| .probe = fjes_probe, |
| .remove = fjes_remove, |
| }; |
| |
| static struct resource fjes_resource[] = { |
| { |
| .flags = IORESOURCE_MEM, |
| .start = 0, |
| .end = 0, |
| }, |
| { |
| .flags = IORESOURCE_IRQ, |
| .start = 0, |
| .end = 0, |
| }, |
| }; |
| |
| static int fjes_acpi_add(struct acpi_device *device) |
| { |
| struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL}; |
| char str_buf[sizeof(FJES_ACPI_SYMBOL) + 1]; |
| struct platform_device *plat_dev; |
| union acpi_object *str; |
| acpi_status status; |
| int result; |
| |
| status = acpi_evaluate_object(device->handle, "_STR", NULL, &buffer); |
| if (ACPI_FAILURE(status)) |
| return -ENODEV; |
| |
| str = buffer.pointer; |
| result = utf16s_to_utf8s((wchar_t *)str->string.pointer, |
| str->string.length, UTF16_LITTLE_ENDIAN, |
| str_buf, sizeof(str_buf) - 1); |
| str_buf[result] = 0; |
| |
| if (strncmp(FJES_ACPI_SYMBOL, str_buf, strlen(FJES_ACPI_SYMBOL)) != 0) { |
| kfree(buffer.pointer); |
| return -ENODEV; |
| } |
| kfree(buffer.pointer); |
| |
| status = acpi_walk_resources(device->handle, METHOD_NAME__CRS, |
| fjes_get_acpi_resource, fjes_resource); |
| if (ACPI_FAILURE(status)) |
| return -ENODEV; |
| |
| /* create platform_device */ |
| plat_dev = platform_device_register_simple(DRV_NAME, 0, fjes_resource, |
| ARRAY_SIZE(fjes_resource)); |
| device->driver_data = plat_dev; |
| |
| return 0; |
| } |
| |
| static int fjes_acpi_remove(struct acpi_device *device) |
| { |
| struct platform_device *plat_dev; |
| |
| plat_dev = (struct platform_device *)acpi_driver_data(device); |
| platform_device_unregister(plat_dev); |
| |
| return 0; |
| } |
| |
| static acpi_status |
| fjes_get_acpi_resource(struct acpi_resource *acpi_res, void *data) |
| { |
| struct acpi_resource_address32 *addr; |
| struct acpi_resource_irq *irq; |
| struct resource *res = data; |
| |
| switch (acpi_res->type) { |
| case ACPI_RESOURCE_TYPE_ADDRESS32: |
| addr = &acpi_res->data.address32; |
| res[0].start = addr->address.minimum; |
| res[0].end = addr->address.minimum + |
| addr->address.address_length - 1; |
| break; |
| |
| case ACPI_RESOURCE_TYPE_IRQ: |
| irq = &acpi_res->data.irq; |
| if (irq->interrupt_count != 1) |
| return AE_ERROR; |
| res[1].start = irq->interrupts[0]; |
| res[1].end = irq->interrupts[0]; |
| break; |
| |
| default: |
| break; |
| } |
| |
| return AE_OK; |
| } |
| |
| static int fjes_request_irq(struct fjes_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| int result = -1; |
| |
| adapter->interrupt_watch_enable = true; |
| if (!delayed_work_pending(&adapter->interrupt_watch_task)) { |
| queue_delayed_work(adapter->control_wq, |
| &adapter->interrupt_watch_task, |
| FJES_IRQ_WATCH_DELAY); |
| } |
| |
| if (!adapter->irq_registered) { |
| result = request_irq(adapter->hw.hw_res.irq, fjes_intr, |
| IRQF_SHARED, netdev->name, adapter); |
| if (result) |
| adapter->irq_registered = false; |
| else |
| adapter->irq_registered = true; |
| } |
| |
| return result; |
| } |
| |
| static void fjes_free_irq(struct fjes_adapter *adapter) |
| { |
| struct fjes_hw *hw = &adapter->hw; |
| |
| adapter->interrupt_watch_enable = false; |
| cancel_delayed_work_sync(&adapter->interrupt_watch_task); |
| |
| fjes_hw_set_irqmask(hw, REG_ICTL_MASK_ALL, true); |
| |
| if (adapter->irq_registered) { |
| free_irq(adapter->hw.hw_res.irq, adapter); |
| adapter->irq_registered = false; |
| } |
| } |
| |
| static const struct net_device_ops fjes_netdev_ops = { |
| .ndo_open = fjes_open, |
| .ndo_stop = fjes_close, |
| .ndo_start_xmit = fjes_xmit_frame, |
| .ndo_get_stats64 = fjes_get_stats64, |
| .ndo_change_mtu = fjes_change_mtu, |
| .ndo_tx_timeout = fjes_tx_retry, |
| .ndo_vlan_rx_add_vid = fjes_vlan_rx_add_vid, |
| .ndo_vlan_rx_kill_vid = fjes_vlan_rx_kill_vid, |
| }; |
| |
| /* fjes_open - Called when a network interface is made active */ |
| static int fjes_open(struct net_device *netdev) |
| { |
| struct fjes_adapter *adapter = netdev_priv(netdev); |
| struct fjes_hw *hw = &adapter->hw; |
| int result; |
| |
| if (adapter->open_guard) |
| return -ENXIO; |
| |
| result = fjes_setup_resources(adapter); |
| if (result) |
| goto err_setup_res; |
| |
| hw->txrx_stop_req_bit = 0; |
| hw->epstop_req_bit = 0; |
| |
| napi_enable(&adapter->napi); |
| |
| fjes_hw_capture_interrupt_status(hw); |
| |
| result = fjes_request_irq(adapter); |
| if (result) |
| goto err_req_irq; |
| |
| fjes_hw_set_irqmask(hw, REG_ICTL_MASK_ALL, false); |
| |
| netif_tx_start_all_queues(netdev); |
| netif_carrier_on(netdev); |
| |
| return 0; |
| |
| err_req_irq: |
| fjes_free_irq(adapter); |
| napi_disable(&adapter->napi); |
| |
| err_setup_res: |
| fjes_free_resources(adapter); |
| return result; |
| } |
| |
| /* fjes_close - Disables a network interface */ |
| static int fjes_close(struct net_device *netdev) |
| { |
| struct fjes_adapter *adapter = netdev_priv(netdev); |
| struct fjes_hw *hw = &adapter->hw; |
| unsigned long flags; |
| int epidx; |
| |
| netif_tx_stop_all_queues(netdev); |
| netif_carrier_off(netdev); |
| |
| fjes_hw_raise_epstop(hw); |
| |
| napi_disable(&adapter->napi); |
| |
| spin_lock_irqsave(&hw->rx_status_lock, flags); |
| for (epidx = 0; epidx < hw->max_epid; epidx++) { |
| if (epidx == hw->my_epid) |
| continue; |
| |
| if (fjes_hw_get_partner_ep_status(hw, epidx) == |
| EP_PARTNER_SHARED) |
| adapter->hw.ep_shm_info[epidx] |
| .tx.info->v1i.rx_status &= |
| ~FJES_RX_POLL_WORK; |
| } |
| spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
| |
| fjes_free_irq(adapter); |
| |
| cancel_delayed_work_sync(&adapter->interrupt_watch_task); |
| cancel_work_sync(&adapter->unshare_watch_task); |
| adapter->unshare_watch_bitmask = 0; |
| cancel_work_sync(&adapter->raise_intr_rxdata_task); |
| cancel_work_sync(&adapter->tx_stall_task); |
| |
| cancel_work_sync(&hw->update_zone_task); |
| cancel_work_sync(&hw->epstop_task); |
| |
| fjes_hw_wait_epstop(hw); |
| |
| fjes_free_resources(adapter); |
| |
| return 0; |
| } |
| |
| static int fjes_setup_resources(struct fjes_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| struct ep_share_mem_info *buf_pair; |
| struct fjes_hw *hw = &adapter->hw; |
| unsigned long flags; |
| int result; |
| int epidx; |
| |
| mutex_lock(&hw->hw_info.lock); |
| result = fjes_hw_request_info(hw); |
| switch (result) { |
| case 0: |
| for (epidx = 0; epidx < hw->max_epid; epidx++) { |
| hw->ep_shm_info[epidx].es_status = |
| hw->hw_info.res_buf->info.info[epidx].es_status; |
| hw->ep_shm_info[epidx].zone = |
| hw->hw_info.res_buf->info.info[epidx].zone; |
| } |
| break; |
| default: |
| case -ENOMSG: |
| case -EBUSY: |
| adapter->force_reset = true; |
| |
| mutex_unlock(&hw->hw_info.lock); |
| return result; |
| } |
| mutex_unlock(&hw->hw_info.lock); |
| |
| for (epidx = 0; epidx < (hw->max_epid); epidx++) { |
| if ((epidx != hw->my_epid) && |
| (hw->ep_shm_info[epidx].es_status == |
| FJES_ZONING_STATUS_ENABLE)) { |
| fjes_hw_raise_interrupt(hw, epidx, |
| REG_ICTL_MASK_INFO_UPDATE); |
| } |
| } |
| |
| msleep(FJES_OPEN_ZONE_UPDATE_WAIT * hw->max_epid); |
| |
| for (epidx = 0; epidx < (hw->max_epid); epidx++) { |
| if (epidx == hw->my_epid) |
| continue; |
| |
| buf_pair = &hw->ep_shm_info[epidx]; |
| |
| spin_lock_irqsave(&hw->rx_status_lock, flags); |
| fjes_hw_setup_epbuf(&buf_pair->tx, netdev->dev_addr, |
| netdev->mtu); |
| spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
| |
| if (fjes_hw_epid_is_same_zone(hw, epidx)) { |
| mutex_lock(&hw->hw_info.lock); |
| result = |
| fjes_hw_register_buff_addr(hw, epidx, buf_pair); |
| mutex_unlock(&hw->hw_info.lock); |
| |
| switch (result) { |
| case 0: |
| break; |
| case -ENOMSG: |
| case -EBUSY: |
| default: |
| adapter->force_reset = true; |
| return result; |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static void fjes_free_resources(struct fjes_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| struct fjes_device_command_param param; |
| struct ep_share_mem_info *buf_pair; |
| struct fjes_hw *hw = &adapter->hw; |
| bool reset_flag = false; |
| unsigned long flags; |
| int result; |
| int epidx; |
| |
| for (epidx = 0; epidx < hw->max_epid; epidx++) { |
| if (epidx == hw->my_epid) |
| continue; |
| |
| mutex_lock(&hw->hw_info.lock); |
| result = fjes_hw_unregister_buff_addr(hw, epidx); |
| mutex_unlock(&hw->hw_info.lock); |
| |
| if (result) |
| reset_flag = true; |
| |
| buf_pair = &hw->ep_shm_info[epidx]; |
| |
| spin_lock_irqsave(&hw->rx_status_lock, flags); |
| fjes_hw_setup_epbuf(&buf_pair->tx, |
| netdev->dev_addr, netdev->mtu); |
| spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
| |
| clear_bit(epidx, &hw->txrx_stop_req_bit); |
| } |
| |
| if (reset_flag || adapter->force_reset) { |
| result = fjes_hw_reset(hw); |
| |
| adapter->force_reset = false; |
| |
| if (result) |
| adapter->open_guard = true; |
| |
| hw->hw_info.buffer_share_bit = 0; |
| |
| memset((void *)¶m, 0, sizeof(param)); |
| |
| param.req_len = hw->hw_info.req_buf_size; |
| param.req_start = __pa(hw->hw_info.req_buf); |
| param.res_len = hw->hw_info.res_buf_size; |
| param.res_start = __pa(hw->hw_info.res_buf); |
| param.share_start = __pa(hw->hw_info.share->ep_status); |
| |
| fjes_hw_init_command_registers(hw, ¶m); |
| } |
| } |
| |
| static void fjes_tx_stall_task(struct work_struct *work) |
| { |
| struct fjes_adapter *adapter = container_of(work, |
| struct fjes_adapter, tx_stall_task); |
| struct net_device *netdev = adapter->netdev; |
| struct fjes_hw *hw = &adapter->hw; |
| int all_queue_available, sendable; |
| enum ep_partner_status pstatus; |
| int max_epid, my_epid, epid; |
| union ep_buffer_info *info; |
| int i; |
| |
| if (((long)jiffies - |
| (long)(netdev->trans_start)) > FJES_TX_TX_STALL_TIMEOUT) { |
| netif_wake_queue(netdev); |
| return; |
| } |
| |
| my_epid = hw->my_epid; |
| max_epid = hw->max_epid; |
| |
| for (i = 0; i < 5; i++) { |
| all_queue_available = 1; |
| |
| for (epid = 0; epid < max_epid; epid++) { |
| if (my_epid == epid) |
| continue; |
| |
| pstatus = fjes_hw_get_partner_ep_status(hw, epid); |
| sendable = (pstatus == EP_PARTNER_SHARED); |
| if (!sendable) |
| continue; |
| |
| info = adapter->hw.ep_shm_info[epid].tx.info; |
| |
| if (!(info->v1i.rx_status & FJES_RX_MTU_CHANGING_DONE)) |
| return; |
| |
| if (EP_RING_FULL(info->v1i.head, info->v1i.tail, |
| info->v1i.count_max)) { |
| all_queue_available = 0; |
| break; |
| } |
| } |
| |
| if (all_queue_available) { |
| netif_wake_queue(netdev); |
| return; |
| } |
| } |
| |
| usleep_range(50, 100); |
| |
| queue_work(adapter->txrx_wq, &adapter->tx_stall_task); |
| } |
| |
| static void fjes_force_close_task(struct work_struct *work) |
| { |
| struct fjes_adapter *adapter = container_of(work, |
| struct fjes_adapter, force_close_task); |
| struct net_device *netdev = adapter->netdev; |
| |
| rtnl_lock(); |
| dev_close(netdev); |
| rtnl_unlock(); |
| } |
| |
| static void fjes_raise_intr_rxdata_task(struct work_struct *work) |
| { |
| struct fjes_adapter *adapter = container_of(work, |
| struct fjes_adapter, raise_intr_rxdata_task); |
| struct fjes_hw *hw = &adapter->hw; |
| enum ep_partner_status pstatus; |
| int max_epid, my_epid, epid; |
| |
| my_epid = hw->my_epid; |
| max_epid = hw->max_epid; |
| |
| for (epid = 0; epid < max_epid; epid++) |
| hw->ep_shm_info[epid].tx_status_work = 0; |
| |
| for (epid = 0; epid < max_epid; epid++) { |
| if (epid == my_epid) |
| continue; |
| |
| pstatus = fjes_hw_get_partner_ep_status(hw, epid); |
| if (pstatus == EP_PARTNER_SHARED) { |
| hw->ep_shm_info[epid].tx_status_work = |
| hw->ep_shm_info[epid].tx.info->v1i.tx_status; |
| |
| if (hw->ep_shm_info[epid].tx_status_work == |
| FJES_TX_DELAY_SEND_PENDING) { |
| hw->ep_shm_info[epid].tx.info->v1i.tx_status = |
| FJES_TX_DELAY_SEND_NONE; |
| } |
| } |
| } |
| |
| for (epid = 0; epid < max_epid; epid++) { |
| if (epid == my_epid) |
| continue; |
| |
| pstatus = fjes_hw_get_partner_ep_status(hw, epid); |
| if ((hw->ep_shm_info[epid].tx_status_work == |
| FJES_TX_DELAY_SEND_PENDING) && |
| (pstatus == EP_PARTNER_SHARED) && |
| !(hw->ep_shm_info[epid].rx.info->v1i.rx_status & |
| FJES_RX_POLL_WORK)) { |
| fjes_hw_raise_interrupt(hw, epid, |
| REG_ICTL_MASK_RX_DATA); |
| } |
| } |
| |
| usleep_range(500, 1000); |
| } |
| |
| static int fjes_tx_send(struct fjes_adapter *adapter, int dest, |
| void *data, size_t len) |
| { |
| int retval; |
| |
| retval = fjes_hw_epbuf_tx_pkt_send(&adapter->hw.ep_shm_info[dest].tx, |
| data, len); |
| if (retval) |
| return retval; |
| |
| adapter->hw.ep_shm_info[dest].tx.info->v1i.tx_status = |
| FJES_TX_DELAY_SEND_PENDING; |
| if (!work_pending(&adapter->raise_intr_rxdata_task)) |
| queue_work(adapter->txrx_wq, |
| &adapter->raise_intr_rxdata_task); |
| |
| retval = 0; |
| return retval; |
| } |
| |
| static netdev_tx_t |
| fjes_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
| { |
| struct fjes_adapter *adapter = netdev_priv(netdev); |
| struct fjes_hw *hw = &adapter->hw; |
| |
| int max_epid, my_epid, dest_epid; |
| enum ep_partner_status pstatus; |
| struct netdev_queue *cur_queue; |
| char shortpkt[VLAN_ETH_HLEN]; |
| bool is_multi, vlan; |
| struct ethhdr *eth; |
| u16 queue_no = 0; |
| u16 vlan_id = 0; |
| netdev_tx_t ret; |
| char *data; |
| int len; |
| |
| ret = NETDEV_TX_OK; |
| is_multi = false; |
| cur_queue = netdev_get_tx_queue(netdev, queue_no); |
| |
| eth = (struct ethhdr *)skb->data; |
| my_epid = hw->my_epid; |
| |
| vlan = (vlan_get_tag(skb, &vlan_id) == 0) ? true : false; |
| |
| data = skb->data; |
| len = skb->len; |
| |
| if (is_multicast_ether_addr(eth->h_dest)) { |
| dest_epid = 0; |
| max_epid = hw->max_epid; |
| is_multi = true; |
| } else if (is_local_ether_addr(eth->h_dest)) { |
| dest_epid = eth->h_dest[ETH_ALEN - 1]; |
| max_epid = dest_epid + 1; |
| |
| if ((eth->h_dest[0] == 0x02) && |
| (0x00 == (eth->h_dest[1] | eth->h_dest[2] | |
| eth->h_dest[3] | eth->h_dest[4])) && |
| (dest_epid < hw->max_epid)) { |
| ; |
| } else { |
| dest_epid = 0; |
| max_epid = 0; |
| ret = NETDEV_TX_OK; |
| |
| adapter->stats64.tx_packets += 1; |
| hw->ep_shm_info[my_epid].net_stats.tx_packets += 1; |
| adapter->stats64.tx_bytes += len; |
| hw->ep_shm_info[my_epid].net_stats.tx_bytes += len; |
| } |
| } else { |
| dest_epid = 0; |
| max_epid = 0; |
| ret = NETDEV_TX_OK; |
| |
| adapter->stats64.tx_packets += 1; |
| hw->ep_shm_info[my_epid].net_stats.tx_packets += 1; |
| adapter->stats64.tx_bytes += len; |
| hw->ep_shm_info[my_epid].net_stats.tx_bytes += len; |
| } |
| |
| for (; dest_epid < max_epid; dest_epid++) { |
| if (my_epid == dest_epid) |
| continue; |
| |
| pstatus = fjes_hw_get_partner_ep_status(hw, dest_epid); |
| if (pstatus != EP_PARTNER_SHARED) { |
| ret = NETDEV_TX_OK; |
| } else if (!fjes_hw_check_epbuf_version( |
| &adapter->hw.ep_shm_info[dest_epid].rx, 0)) { |
| /* version is NOT 0 */ |
| adapter->stats64.tx_carrier_errors += 1; |
| hw->ep_shm_info[dest_epid].net_stats |
| .tx_carrier_errors += 1; |
| |
| ret = NETDEV_TX_OK; |
| } else if (!fjes_hw_check_mtu( |
| &adapter->hw.ep_shm_info[dest_epid].rx, |
| netdev->mtu)) { |
| adapter->stats64.tx_dropped += 1; |
| hw->ep_shm_info[dest_epid].net_stats.tx_dropped += 1; |
| adapter->stats64.tx_errors += 1; |
| hw->ep_shm_info[dest_epid].net_stats.tx_errors += 1; |
| |
| ret = NETDEV_TX_OK; |
| } else if (vlan && |
| !fjes_hw_check_vlan_id( |
| &adapter->hw.ep_shm_info[dest_epid].rx, |
| vlan_id)) { |
| ret = NETDEV_TX_OK; |
| } else { |
| if (len < VLAN_ETH_HLEN) { |
| memset(shortpkt, 0, VLAN_ETH_HLEN); |
| memcpy(shortpkt, skb->data, skb->len); |
| len = VLAN_ETH_HLEN; |
| data = shortpkt; |
| } |
| |
| if (adapter->tx_retry_count == 0) { |
| adapter->tx_start_jiffies = jiffies; |
| adapter->tx_retry_count = 1; |
| } else { |
| adapter->tx_retry_count++; |
| } |
| |
| if (fjes_tx_send(adapter, dest_epid, data, len)) { |
| if (is_multi) { |
| ret = NETDEV_TX_OK; |
| } else if ( |
| ((long)jiffies - |
| (long)adapter->tx_start_jiffies) >= |
| FJES_TX_RETRY_TIMEOUT) { |
| adapter->stats64.tx_fifo_errors += 1; |
| hw->ep_shm_info[dest_epid].net_stats |
| .tx_fifo_errors += 1; |
| adapter->stats64.tx_errors += 1; |
| hw->ep_shm_info[dest_epid].net_stats |
| .tx_errors += 1; |
| |
| ret = NETDEV_TX_OK; |
| } else { |
| netdev->trans_start = jiffies; |
| netif_tx_stop_queue(cur_queue); |
| |
| if (!work_pending(&adapter->tx_stall_task)) |
| queue_work(adapter->txrx_wq, |
| &adapter->tx_stall_task); |
| |
| ret = NETDEV_TX_BUSY; |
| } |
| } else { |
| if (!is_multi) { |
| adapter->stats64.tx_packets += 1; |
| hw->ep_shm_info[dest_epid].net_stats |
| .tx_packets += 1; |
| adapter->stats64.tx_bytes += len; |
| hw->ep_shm_info[dest_epid].net_stats |
| .tx_bytes += len; |
| } |
| |
| adapter->tx_retry_count = 0; |
| ret = NETDEV_TX_OK; |
| } |
| } |
| } |
| |
| if (ret == NETDEV_TX_OK) { |
| dev_kfree_skb(skb); |
| if (is_multi) { |
| adapter->stats64.tx_packets += 1; |
| hw->ep_shm_info[my_epid].net_stats.tx_packets += 1; |
| adapter->stats64.tx_bytes += 1; |
| hw->ep_shm_info[my_epid].net_stats.tx_bytes += len; |
| } |
| } |
| |
| return ret; |
| } |
| |
| static void fjes_tx_retry(struct net_device *netdev) |
| { |
| struct netdev_queue *queue = netdev_get_tx_queue(netdev, 0); |
| |
| netif_tx_wake_queue(queue); |
| } |
| |
| static struct rtnl_link_stats64 * |
| fjes_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats) |
| { |
| struct fjes_adapter *adapter = netdev_priv(netdev); |
| |
| memcpy(stats, &adapter->stats64, sizeof(struct rtnl_link_stats64)); |
| |
| return stats; |
| } |
| |
| static int fjes_change_mtu(struct net_device *netdev, int new_mtu) |
| { |
| struct fjes_adapter *adapter = netdev_priv(netdev); |
| bool running = netif_running(netdev); |
| struct fjes_hw *hw = &adapter->hw; |
| unsigned long flags; |
| int ret = -EINVAL; |
| int idx, epidx; |
| |
| for (idx = 0; fjes_support_mtu[idx] != 0; idx++) { |
| if (new_mtu <= fjes_support_mtu[idx]) { |
| new_mtu = fjes_support_mtu[idx]; |
| if (new_mtu == netdev->mtu) |
| return 0; |
| |
| ret = 0; |
| break; |
| } |
| } |
| |
| if (ret) |
| return ret; |
| |
| if (running) { |
| spin_lock_irqsave(&hw->rx_status_lock, flags); |
| for (epidx = 0; epidx < hw->max_epid; epidx++) { |
| if (epidx == hw->my_epid) |
| continue; |
| hw->ep_shm_info[epidx].tx.info->v1i.rx_status &= |
| ~FJES_RX_MTU_CHANGING_DONE; |
| } |
| spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
| |
| netif_tx_stop_all_queues(netdev); |
| netif_carrier_off(netdev); |
| cancel_work_sync(&adapter->tx_stall_task); |
| napi_disable(&adapter->napi); |
| |
| msleep(1000); |
| |
| netif_tx_stop_all_queues(netdev); |
| } |
| |
| netdev->mtu = new_mtu; |
| |
| if (running) { |
| spin_lock_irqsave(&hw->rx_status_lock, flags); |
| for (epidx = 0; epidx < hw->max_epid; epidx++) { |
| if (epidx == hw->my_epid) |
| continue; |
| |
| spin_lock_irqsave(&hw->rx_status_lock, flags); |
| fjes_hw_setup_epbuf(&hw->ep_shm_info[epidx].tx, |
| netdev->dev_addr, |
| netdev->mtu); |
| |
| hw->ep_shm_info[epidx].tx.info->v1i.rx_status |= |
| FJES_RX_MTU_CHANGING_DONE; |
| spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
| } |
| |
| netif_tx_wake_all_queues(netdev); |
| netif_carrier_on(netdev); |
| napi_enable(&adapter->napi); |
| napi_schedule(&adapter->napi); |
| } |
| |
| return ret; |
| } |
| |
| static int fjes_vlan_rx_add_vid(struct net_device *netdev, |
| __be16 proto, u16 vid) |
| { |
| struct fjes_adapter *adapter = netdev_priv(netdev); |
| bool ret = true; |
| int epid; |
| |
| for (epid = 0; epid < adapter->hw.max_epid; epid++) { |
| if (epid == adapter->hw.my_epid) |
| continue; |
| |
| if (!fjes_hw_check_vlan_id( |
| &adapter->hw.ep_shm_info[epid].tx, vid)) |
| ret = fjes_hw_set_vlan_id( |
| &adapter->hw.ep_shm_info[epid].tx, vid); |
| } |
| |
| return ret ? 0 : -ENOSPC; |
| } |
| |
| static int fjes_vlan_rx_kill_vid(struct net_device *netdev, |
| __be16 proto, u16 vid) |
| { |
| struct fjes_adapter *adapter = netdev_priv(netdev); |
| int epid; |
| |
| for (epid = 0; epid < adapter->hw.max_epid; epid++) { |
| if (epid == adapter->hw.my_epid) |
| continue; |
| |
| fjes_hw_del_vlan_id(&adapter->hw.ep_shm_info[epid].tx, vid); |
| } |
| |
| return 0; |
| } |
| |
| static void fjes_txrx_stop_req_irq(struct fjes_adapter *adapter, |
| int src_epid) |
| { |
| struct fjes_hw *hw = &adapter->hw; |
| enum ep_partner_status status; |
| unsigned long flags; |
| |
| status = fjes_hw_get_partner_ep_status(hw, src_epid); |
| switch (status) { |
| case EP_PARTNER_UNSHARE: |
| case EP_PARTNER_COMPLETE: |
| default: |
| break; |
| case EP_PARTNER_WAITING: |
| if (src_epid < hw->my_epid) { |
| spin_lock_irqsave(&hw->rx_status_lock, flags); |
| hw->ep_shm_info[src_epid].tx.info->v1i.rx_status |= |
| FJES_RX_STOP_REQ_DONE; |
| spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
| |
| clear_bit(src_epid, &hw->txrx_stop_req_bit); |
| set_bit(src_epid, &adapter->unshare_watch_bitmask); |
| |
| if (!work_pending(&adapter->unshare_watch_task)) |
| queue_work(adapter->control_wq, |
| &adapter->unshare_watch_task); |
| } |
| break; |
| case EP_PARTNER_SHARED: |
| if (hw->ep_shm_info[src_epid].rx.info->v1i.rx_status & |
| FJES_RX_STOP_REQ_REQUEST) { |
| set_bit(src_epid, &hw->epstop_req_bit); |
| if (!work_pending(&hw->epstop_task)) |
| queue_work(adapter->control_wq, |
| &hw->epstop_task); |
| } |
| break; |
| } |
| } |
| |
| static void fjes_stop_req_irq(struct fjes_adapter *adapter, int src_epid) |
| { |
| struct fjes_hw *hw = &adapter->hw; |
| enum ep_partner_status status; |
| unsigned long flags; |
| |
| set_bit(src_epid, &hw->hw_info.buffer_unshare_reserve_bit); |
| |
| status = fjes_hw_get_partner_ep_status(hw, src_epid); |
| switch (status) { |
| case EP_PARTNER_WAITING: |
| spin_lock_irqsave(&hw->rx_status_lock, flags); |
| hw->ep_shm_info[src_epid].tx.info->v1i.rx_status |= |
| FJES_RX_STOP_REQ_DONE; |
| spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
| clear_bit(src_epid, &hw->txrx_stop_req_bit); |
| /* fall through */ |
| case EP_PARTNER_UNSHARE: |
| case EP_PARTNER_COMPLETE: |
| default: |
| set_bit(src_epid, &adapter->unshare_watch_bitmask); |
| if (!work_pending(&adapter->unshare_watch_task)) |
| queue_work(adapter->control_wq, |
| &adapter->unshare_watch_task); |
| break; |
| case EP_PARTNER_SHARED: |
| set_bit(src_epid, &hw->epstop_req_bit); |
| |
| if (!work_pending(&hw->epstop_task)) |
| queue_work(adapter->control_wq, &hw->epstop_task); |
| break; |
| } |
| } |
| |
| static void fjes_update_zone_irq(struct fjes_adapter *adapter, |
| int src_epid) |
| { |
| struct fjes_hw *hw = &adapter->hw; |
| |
| if (!work_pending(&hw->update_zone_task)) |
| queue_work(adapter->control_wq, &hw->update_zone_task); |
| } |
| |
| static irqreturn_t fjes_intr(int irq, void *data) |
| { |
| struct fjes_adapter *adapter = data; |
| struct fjes_hw *hw = &adapter->hw; |
| irqreturn_t ret; |
| u32 icr; |
| |
| icr = fjes_hw_capture_interrupt_status(hw); |
| |
| if (icr & REG_IS_MASK_IS_ASSERT) { |
| if (icr & REG_ICTL_MASK_RX_DATA) |
| fjes_rx_irq(adapter, icr & REG_IS_MASK_EPID); |
| |
| if (icr & REG_ICTL_MASK_DEV_STOP_REQ) |
| fjes_stop_req_irq(adapter, icr & REG_IS_MASK_EPID); |
| |
| if (icr & REG_ICTL_MASK_TXRX_STOP_REQ) |
| fjes_txrx_stop_req_irq(adapter, icr & REG_IS_MASK_EPID); |
| |
| if (icr & REG_ICTL_MASK_TXRX_STOP_DONE) |
| fjes_hw_set_irqmask(hw, |
| REG_ICTL_MASK_TXRX_STOP_DONE, true); |
| |
| if (icr & REG_ICTL_MASK_INFO_UPDATE) |
| fjes_update_zone_irq(adapter, icr & REG_IS_MASK_EPID); |
| |
| ret = IRQ_HANDLED; |
| } else { |
| ret = IRQ_NONE; |
| } |
| |
| return ret; |
| } |
| |
| static int fjes_rxframe_search_exist(struct fjes_adapter *adapter, |
| int start_epid) |
| { |
| struct fjes_hw *hw = &adapter->hw; |
| enum ep_partner_status pstatus; |
| int max_epid, cur_epid; |
| int i; |
| |
| max_epid = hw->max_epid; |
| start_epid = (start_epid + 1 + max_epid) % max_epid; |
| |
| for (i = 0; i < max_epid; i++) { |
| cur_epid = (start_epid + i) % max_epid; |
| if (cur_epid == hw->my_epid) |
| continue; |
| |
| pstatus = fjes_hw_get_partner_ep_status(hw, cur_epid); |
| if (pstatus == EP_PARTNER_SHARED) { |
| if (!fjes_hw_epbuf_rx_is_empty( |
| &hw->ep_shm_info[cur_epid].rx)) |
| return cur_epid; |
| } |
| } |
| return -1; |
| } |
| |
| static void *fjes_rxframe_get(struct fjes_adapter *adapter, size_t *psize, |
| int *cur_epid) |
| { |
| void *frame; |
| |
| *cur_epid = fjes_rxframe_search_exist(adapter, *cur_epid); |
| if (*cur_epid < 0) |
| return NULL; |
| |
| frame = |
| fjes_hw_epbuf_rx_curpkt_get_addr( |
| &adapter->hw.ep_shm_info[*cur_epid].rx, psize); |
| |
| return frame; |
| } |
| |
| static void fjes_rxframe_release(struct fjes_adapter *adapter, int cur_epid) |
| { |
| fjes_hw_epbuf_rx_curpkt_drop(&adapter->hw.ep_shm_info[cur_epid].rx); |
| } |
| |
| static void fjes_rx_irq(struct fjes_adapter *adapter, int src_epid) |
| { |
| struct fjes_hw *hw = &adapter->hw; |
| |
| fjes_hw_set_irqmask(hw, REG_ICTL_MASK_RX_DATA, true); |
| |
| adapter->unset_rx_last = true; |
| napi_schedule(&adapter->napi); |
| } |
| |
| static int fjes_poll(struct napi_struct *napi, int budget) |
| { |
| struct fjes_adapter *adapter = |
| container_of(napi, struct fjes_adapter, napi); |
| struct net_device *netdev = napi->dev; |
| struct fjes_hw *hw = &adapter->hw; |
| struct sk_buff *skb; |
| int work_done = 0; |
| int cur_epid = 0; |
| int epidx; |
| size_t frame_len; |
| void *frame; |
| |
| spin_lock(&hw->rx_status_lock); |
| for (epidx = 0; epidx < hw->max_epid; epidx++) { |
| if (epidx == hw->my_epid) |
| continue; |
| |
| if (fjes_hw_get_partner_ep_status(hw, epidx) == |
| EP_PARTNER_SHARED) |
| adapter->hw.ep_shm_info[epidx] |
| .tx.info->v1i.rx_status |= FJES_RX_POLL_WORK; |
| } |
| spin_unlock(&hw->rx_status_lock); |
| |
| while (work_done < budget) { |
| prefetch(&adapter->hw); |
| frame = fjes_rxframe_get(adapter, &frame_len, &cur_epid); |
| |
| if (frame) { |
| skb = napi_alloc_skb(napi, frame_len); |
| if (!skb) { |
| adapter->stats64.rx_dropped += 1; |
| hw->ep_shm_info[cur_epid].net_stats |
| .rx_dropped += 1; |
| adapter->stats64.rx_errors += 1; |
| hw->ep_shm_info[cur_epid].net_stats |
| .rx_errors += 1; |
| } else { |
| memcpy(skb_put(skb, frame_len), |
| frame, frame_len); |
| skb->protocol = eth_type_trans(skb, netdev); |
| skb->ip_summed = CHECKSUM_UNNECESSARY; |
| |
| netif_receive_skb(skb); |
| |
| work_done++; |
| |
| adapter->stats64.rx_packets += 1; |
| hw->ep_shm_info[cur_epid].net_stats |
| .rx_packets += 1; |
| adapter->stats64.rx_bytes += frame_len; |
| hw->ep_shm_info[cur_epid].net_stats |
| .rx_bytes += frame_len; |
| |
| if (is_multicast_ether_addr( |
| ((struct ethhdr *)frame)->h_dest)) { |
| adapter->stats64.multicast += 1; |
| hw->ep_shm_info[cur_epid].net_stats |
| .multicast += 1; |
| } |
| } |
| |
| fjes_rxframe_release(adapter, cur_epid); |
| adapter->unset_rx_last = true; |
| } else { |
| break; |
| } |
| } |
| |
| if (work_done < budget) { |
| napi_complete(napi); |
| |
| if (adapter->unset_rx_last) { |
| adapter->rx_last_jiffies = jiffies; |
| adapter->unset_rx_last = false; |
| } |
| |
| if (((long)jiffies - (long)adapter->rx_last_jiffies) < 3) { |
| napi_reschedule(napi); |
| } else { |
| spin_lock(&hw->rx_status_lock); |
| for (epidx = 0; epidx < hw->max_epid; epidx++) { |
| if (epidx == hw->my_epid) |
| continue; |
| if (fjes_hw_get_partner_ep_status(hw, epidx) == |
| EP_PARTNER_SHARED) |
| adapter->hw.ep_shm_info[epidx].tx |
| .info->v1i.rx_status &= |
| ~FJES_RX_POLL_WORK; |
| } |
| spin_unlock(&hw->rx_status_lock); |
| |
| fjes_hw_set_irqmask(hw, REG_ICTL_MASK_RX_DATA, false); |
| } |
| } |
| |
| return work_done; |
| } |
| |
| /* fjes_probe - Device Initialization Routine */ |
| static int fjes_probe(struct platform_device *plat_dev) |
| { |
| struct fjes_adapter *adapter; |
| struct net_device *netdev; |
| struct resource *res; |
| struct fjes_hw *hw; |
| int err; |
| |
| err = -ENOMEM; |
| netdev = alloc_netdev_mq(sizeof(struct fjes_adapter), "es%d", |
| NET_NAME_UNKNOWN, fjes_netdev_setup, |
| FJES_MAX_QUEUES); |
| |
| if (!netdev) |
| goto err_out; |
| |
| SET_NETDEV_DEV(netdev, &plat_dev->dev); |
| |
| dev_set_drvdata(&plat_dev->dev, netdev); |
| adapter = netdev_priv(netdev); |
| adapter->netdev = netdev; |
| adapter->plat_dev = plat_dev; |
| hw = &adapter->hw; |
| hw->back = adapter; |
| |
| /* setup the private structure */ |
| err = fjes_sw_init(adapter); |
| if (err) |
| goto err_free_netdev; |
| |
| INIT_WORK(&adapter->force_close_task, fjes_force_close_task); |
| adapter->force_reset = false; |
| adapter->open_guard = false; |
| |
| adapter->txrx_wq = create_workqueue(DRV_NAME "/txrx"); |
| adapter->control_wq = create_workqueue(DRV_NAME "/control"); |
| |
| INIT_WORK(&adapter->tx_stall_task, fjes_tx_stall_task); |
| INIT_WORK(&adapter->raise_intr_rxdata_task, |
| fjes_raise_intr_rxdata_task); |
| INIT_WORK(&adapter->unshare_watch_task, fjes_watch_unshare_task); |
| adapter->unshare_watch_bitmask = 0; |
| |
| INIT_DELAYED_WORK(&adapter->interrupt_watch_task, fjes_irq_watch_task); |
| adapter->interrupt_watch_enable = false; |
| |
| res = platform_get_resource(plat_dev, IORESOURCE_MEM, 0); |
| hw->hw_res.start = res->start; |
| hw->hw_res.size = resource_size(res); |
| hw->hw_res.irq = platform_get_irq(plat_dev, 0); |
| err = fjes_hw_init(&adapter->hw); |
| if (err) |
| goto err_free_netdev; |
| |
| /* setup MAC address (02:00:00:00:00:[epid])*/ |
| netdev->dev_addr[0] = 2; |
| netdev->dev_addr[1] = 0; |
| netdev->dev_addr[2] = 0; |
| netdev->dev_addr[3] = 0; |
| netdev->dev_addr[4] = 0; |
| netdev->dev_addr[5] = hw->my_epid; /* EPID */ |
| |
| err = register_netdev(netdev); |
| if (err) |
| goto err_hw_exit; |
| |
| netif_carrier_off(netdev); |
| |
| return 0; |
| |
| err_hw_exit: |
| fjes_hw_exit(&adapter->hw); |
| err_free_netdev: |
| free_netdev(netdev); |
| err_out: |
| return err; |
| } |
| |
| /* fjes_remove - Device Removal Routine */ |
| static int fjes_remove(struct platform_device *plat_dev) |
| { |
| struct net_device *netdev = dev_get_drvdata(&plat_dev->dev); |
| struct fjes_adapter *adapter = netdev_priv(netdev); |
| struct fjes_hw *hw = &adapter->hw; |
| |
| cancel_delayed_work_sync(&adapter->interrupt_watch_task); |
| cancel_work_sync(&adapter->unshare_watch_task); |
| cancel_work_sync(&adapter->raise_intr_rxdata_task); |
| cancel_work_sync(&adapter->tx_stall_task); |
| if (adapter->control_wq) |
| destroy_workqueue(adapter->control_wq); |
| if (adapter->txrx_wq) |
| destroy_workqueue(adapter->txrx_wq); |
| |
| unregister_netdev(netdev); |
| |
| fjes_hw_exit(hw); |
| |
| netif_napi_del(&adapter->napi); |
| |
| free_netdev(netdev); |
| |
| return 0; |
| } |
| |
| static int fjes_sw_init(struct fjes_adapter *adapter) |
| { |
| struct net_device *netdev = adapter->netdev; |
| |
| netif_napi_add(netdev, &adapter->napi, fjes_poll, 64); |
| |
| return 0; |
| } |
| |
| /* fjes_netdev_setup - netdevice initialization routine */ |
| static void fjes_netdev_setup(struct net_device *netdev) |
| { |
| ether_setup(netdev); |
| |
| netdev->watchdog_timeo = FJES_TX_RETRY_INTERVAL; |
| netdev->netdev_ops = &fjes_netdev_ops; |
| fjes_set_ethtool_ops(netdev); |
| netdev->mtu = fjes_support_mtu[3]; |
| netdev->flags |= IFF_BROADCAST; |
| netdev->features |= NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_FILTER; |
| } |
| |
| static void fjes_irq_watch_task(struct work_struct *work) |
| { |
| struct fjes_adapter *adapter = container_of(to_delayed_work(work), |
| struct fjes_adapter, interrupt_watch_task); |
| |
| local_irq_disable(); |
| fjes_intr(adapter->hw.hw_res.irq, adapter); |
| local_irq_enable(); |
| |
| if (fjes_rxframe_search_exist(adapter, 0) >= 0) |
| napi_schedule(&adapter->napi); |
| |
| if (adapter->interrupt_watch_enable) { |
| if (!delayed_work_pending(&adapter->interrupt_watch_task)) |
| queue_delayed_work(adapter->control_wq, |
| &adapter->interrupt_watch_task, |
| FJES_IRQ_WATCH_DELAY); |
| } |
| } |
| |
| static void fjes_watch_unshare_task(struct work_struct *work) |
| { |
| struct fjes_adapter *adapter = |
| container_of(work, struct fjes_adapter, unshare_watch_task); |
| |
| struct net_device *netdev = adapter->netdev; |
| struct fjes_hw *hw = &adapter->hw; |
| |
| int unshare_watch, unshare_reserve; |
| int max_epid, my_epid, epidx; |
| int stop_req, stop_req_done; |
| ulong unshare_watch_bitmask; |
| unsigned long flags; |
| int wait_time = 0; |
| int is_shared; |
| int ret; |
| |
| my_epid = hw->my_epid; |
| max_epid = hw->max_epid; |
| |
| unshare_watch_bitmask = adapter->unshare_watch_bitmask; |
| adapter->unshare_watch_bitmask = 0; |
| |
| while ((unshare_watch_bitmask || hw->txrx_stop_req_bit) && |
| (wait_time < 3000)) { |
| for (epidx = 0; epidx < hw->max_epid; epidx++) { |
| if (epidx == hw->my_epid) |
| continue; |
| |
| is_shared = fjes_hw_epid_is_shared(hw->hw_info.share, |
| epidx); |
| |
| stop_req = test_bit(epidx, &hw->txrx_stop_req_bit); |
| |
| stop_req_done = hw->ep_shm_info[epidx].rx.info->v1i.rx_status & |
| FJES_RX_STOP_REQ_DONE; |
| |
| unshare_watch = test_bit(epidx, &unshare_watch_bitmask); |
| |
| unshare_reserve = test_bit(epidx, |
| &hw->hw_info.buffer_unshare_reserve_bit); |
| |
| if ((!stop_req || |
| (is_shared && (!is_shared || !stop_req_done))) && |
| (is_shared || !unshare_watch || !unshare_reserve)) |
| continue; |
| |
| mutex_lock(&hw->hw_info.lock); |
| ret = fjes_hw_unregister_buff_addr(hw, epidx); |
| switch (ret) { |
| case 0: |
| break; |
| case -ENOMSG: |
| case -EBUSY: |
| default: |
| if (!work_pending( |
| &adapter->force_close_task)) { |
| adapter->force_reset = true; |
| schedule_work( |
| &adapter->force_close_task); |
| } |
| break; |
| } |
| mutex_unlock(&hw->hw_info.lock); |
| |
| spin_lock_irqsave(&hw->rx_status_lock, flags); |
| fjes_hw_setup_epbuf(&hw->ep_shm_info[epidx].tx, |
| netdev->dev_addr, netdev->mtu); |
| spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
| |
| clear_bit(epidx, &hw->txrx_stop_req_bit); |
| clear_bit(epidx, &unshare_watch_bitmask); |
| clear_bit(epidx, |
| &hw->hw_info.buffer_unshare_reserve_bit); |
| } |
| |
| msleep(100); |
| wait_time += 100; |
| } |
| |
| if (hw->hw_info.buffer_unshare_reserve_bit) { |
| for (epidx = 0; epidx < hw->max_epid; epidx++) { |
| if (epidx == hw->my_epid) |
| continue; |
| |
| if (test_bit(epidx, |
| &hw->hw_info.buffer_unshare_reserve_bit)) { |
| mutex_lock(&hw->hw_info.lock); |
| |
| ret = fjes_hw_unregister_buff_addr(hw, epidx); |
| switch (ret) { |
| case 0: |
| break; |
| case -ENOMSG: |
| case -EBUSY: |
| default: |
| if (!work_pending( |
| &adapter->force_close_task)) { |
| adapter->force_reset = true; |
| schedule_work( |
| &adapter->force_close_task); |
| } |
| break; |
| } |
| mutex_unlock(&hw->hw_info.lock); |
| |
| spin_lock_irqsave(&hw->rx_status_lock, flags); |
| fjes_hw_setup_epbuf( |
| &hw->ep_shm_info[epidx].tx, |
| netdev->dev_addr, netdev->mtu); |
| spin_unlock_irqrestore(&hw->rx_status_lock, |
| flags); |
| |
| clear_bit(epidx, &hw->txrx_stop_req_bit); |
| clear_bit(epidx, &unshare_watch_bitmask); |
| clear_bit(epidx, &hw->hw_info.buffer_unshare_reserve_bit); |
| } |
| |
| if (test_bit(epidx, &unshare_watch_bitmask)) { |
| spin_lock_irqsave(&hw->rx_status_lock, flags); |
| hw->ep_shm_info[epidx].tx.info->v1i.rx_status &= |
| ~FJES_RX_STOP_REQ_DONE; |
| spin_unlock_irqrestore(&hw->rx_status_lock, |
| flags); |
| } |
| } |
| } |
| } |
| |
| /* fjes_init_module - Driver Registration Routine */ |
| static int __init fjes_init_module(void) |
| { |
| int result; |
| |
| pr_info("%s - version %s - %s\n", |
| fjes_driver_string, fjes_driver_version, fjes_copyright); |
| |
| result = platform_driver_register(&fjes_driver); |
| if (result < 0) |
| return result; |
| |
| result = acpi_bus_register_driver(&fjes_acpi_driver); |
| if (result < 0) |
| goto fail_acpi_driver; |
| |
| return 0; |
| |
| fail_acpi_driver: |
| platform_driver_unregister(&fjes_driver); |
| return result; |
| } |
| |
| module_init(fjes_init_module); |
| |
| /* fjes_exit_module - Driver Exit Cleanup Routine */ |
| static void __exit fjes_exit_module(void) |
| { |
| acpi_bus_unregister_driver(&fjes_acpi_driver); |
| platform_driver_unregister(&fjes_driver); |
| } |
| |
| module_exit(fjes_exit_module); |