Signed-off-by: Taku Izumi <izumi.taku@xxxxxxxxxxxxxx>
---
drivers/platform/x86/fjes/fjes.h | 47 ++
drivers/platform/x86/fjes/fjes_hw.c | 214 ++++++
drivers/platform/x86/fjes/fjes_main.c | 1267 +++++++++++++++++++++++++++++++++
drivers/platform/x86/fjes/fjes_regs.h | 1 -
4 files changed, 1528 insertions(+), 1 deletion(-)
diff --git a/drivers/platform/x86/fjes/fjes.h b/drivers/platform/x86/fjes/fjes.h
index efe7cc4..c056fc4 100644
--- a/drivers/platform/x86/fjes/fjes.h
+++ b/drivers/platform/x86/fjes/fjes.h
@@ -24,11 +24,58 @@
#define FJES_H_
#include <linux/acpi.h>
+#include <linux/workqueue.h>
#include "fjes_hw.h"
#define FJES_ACPI_SYMBOL "Extended Socket"
+
+#define FJES_MAX_QUEUES 1
+#define FJES_TX_RETRY_INTERVAL (20 * HZ)
+#define FJES_TX_RETRY_TIMEOUT (100)
+#define FJES_TX_TX_STALL_TIMEOUT (FJES_TX_RETRY_INTERVAL/2)
+#define FJES_OPEN_ZONE_UPDATE_WAIT (300) /* msec */
+#define FJES_IRQ_WATCH_DELAY (HZ)
+
+
+/* board specific private data structure */
+struct fjes_adapter {
+
+ struct net_device *netdev;
+ struct platform_device *plat_dev;
+
+ struct napi_struct napi;
+ struct rtnl_link_stats64 stats64;
+
+ unsigned int tx_retry_count;
+ unsigned long tx_start_jiffies;
+ unsigned long rx_last_jiffies;
+ bool unset_rx_last;
+
+
+ struct work_struct force_close_task;
+ bool force_reset;
+ bool open_guard;
+
+ bool irq_registered;
+
+ struct workqueue_struct *txrx_wq;
+ struct workqueue_struct *control_wq;
+
+ struct work_struct tx_stall_task;
+ struct work_struct raise_intr_rxdata_task;
+
+ struct work_struct unshare_watch_task;
+ unsigned long unshare_watch_bitmask;
+
+ struct delayed_work interrupt_watch_task;
+ bool interrupt_watch_enable;
+
+ struct fjes_hw hw;
+
+};
+
extern char fjes_driver_name[];
extern char fjes_driver_version[];
extern u32 fjes_support_mtu[];
diff --git a/drivers/platform/x86/fjes/fjes_hw.c b/drivers/platform/x86/fjes/fjes_hw.c
index 4431aba..2beeb3a 100644
--- a/drivers/platform/x86/fjes/fjes_hw.c
+++ b/drivers/platform/x86/fjes/fjes_hw.c
@@ -22,6 +22,10 @@
#include "fjes_hw.h"
#include "fjes.h"
+static void fjes_hw_update_zone_task(struct work_struct *);
+static void fjes_hw_epstop_task(struct work_struct *);
+
+
u32 fjes_hw_rd32(struct fjes_hw *hw, u32 reg)
{
u8 *base = hw->base;
@@ -326,6 +330,9 @@ int fjes_hw_init(struct fjes_hw *hw)
fjes_hw_set_irqmask(hw, REG_ICTL_MASK_ALL, true);
+ INIT_WORK(&hw->update_zone_task, fjes_hw_update_zone_task);
+ INIT_WORK(&hw->epstop_task, fjes_hw_epstop_task);
+
mutex_init(&hw->hw_info.lock);
hw->max_epid = fjes_hw_get_max_epid(hw);
@@ -942,3 +949,210 @@ int fjes_hw_epbuf_tx_pkt_send(struct epbuf_handler *epbh,
return 0;
}
+static void fjes_hw_update_zone_task(struct work_struct *work)
+{
+
+ struct fjes_hw *hw = container_of(work,
+ struct fjes_hw, update_zone_task);
+ struct fjes_adapter *adapter = (struct fjes_adapter *)hw->back;
+ struct net_device *netdev = adapter->netdev;
+ int ret;
+ int epidx;
+ enum ep_partner_status pstatus;
+ unsigned long share_bit = 0;
+ unsigned long unshare_bit = 0;
+ unsigned long irq_bit = 0;
+ bool update = false;
+ union fjes_device_command_res *res_buf =
+ hw->hw_info.res_buf;
+
+ mutex_lock(&hw->hw_info.lock);
+
+ ret = fjes_hw_request_info(hw);
+ switch (ret) {
+ case -ENOMSG:
+ case -EBUSY:
+ default:
+ if (!work_pending(&adapter->force_close_task)) {
+ adapter->force_reset = true;
+ schedule_work(&adapter->force_close_task);
+ }
+ break;
+
+ case 0:
+
+ for (epidx = 0; epidx < hw->max_epid; epidx++) {
+ if (epidx != hw->my_epid) {
+
+ pstatus = fjes_hw_get_partner_ep_status(hw, epidx);
+ switch (pstatus) {
+ case EP_PARTNER_UNSHARE:
+ default:
+ if ((res_buf->info.info[epidx].zone !=
+ FJES_ZONING_ZONE_TYPE_NONE) &&
+ (res_buf->info.info[epidx].es_status ==
+ FJES_ZONING_STATUS_ENABLE) &&
+ (res_buf->info.info[epidx].zone ==
+ res_buf->info.info[hw->my_epid].zone))
+ set_bit(epidx, &share_bit);
+ else
+ set_bit(epidx, &unshare_bit);
+ break;
+
+ case EP_PARTNER_COMPLETE:
+ case EP_PARTNER_WAITING:
+ if ((res_buf->info.info[epidx].zone ==
+ FJES_ZONING_ZONE_TYPE_NONE) ||
+ (res_buf->info.info[epidx].es_status !=
+ FJES_ZONING_STATUS_ENABLE) ||
+ (res_buf->info.info[epidx].zone !=
+ res_buf->info.
+ info[hw->my_epid].zone)) {
+
+ set_bit(epidx,
+ &adapter->unshare_watch_bitmask);
+ set_bit(epidx,
+ &hw->hw_info.buffer_unshare_reserve_bit);
+ }
+ break;
+
+ case EP_PARTNER_SHARED:
+ if ((res_buf->info.info[epidx].zone ==
+ FJES_ZONING_ZONE_TYPE_NONE) ||
+ (res_buf->info.info[epidx].es_status !=
+ FJES_ZONING_STATUS_ENABLE) ||
+ (res_buf->info.info[epidx].zone !=
+ res_buf->info.
+ info[hw->my_epid].zone))
+
+ set_bit(epidx, &irq_bit);
+ break;
+ }
+
+ }
+
+ if (hw->ep_shm_info[epidx].zone !=
+ res_buf->info.info[epidx].zone)
+ update = true;
+ hw->ep_shm_info[epidx].es_status =
+ res_buf->info.info[epidx].es_status;
+ hw->ep_shm_info[epidx].zone =
+ res_buf->info.info[epidx].zone;
+
+ }
+ break;
+ }
+
+ mutex_unlock(&hw->hw_info.lock);
+
+ for (epidx = 0; epidx < hw->max_epid; epidx++) {
+
+ if (epidx == hw->my_epid)
+ continue;
+
+ if (test_bit(epidx, &share_bit)) {
+
+ fjes_hw_setup_epbuf(&hw->ep_shm_info[epidx].tx,
+ netdev->dev_addr, netdev->mtu);
+
+ mutex_lock(&hw->hw_info.lock);
+
+ ret = fjes_hw_register_buff_addr(hw, epidx,
+ &hw->ep_shm_info[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);
+ }
+
+
+ if (test_bit(epidx, &unshare_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);
+
+ if (ret == 0)
+ fjes_hw_setup_epbuf(&hw->ep_shm_info[epidx].tx,
+ netdev->dev_addr, netdev->mtu);
+
+ }
+
+ if (test_bit(epidx, &irq_bit)) {
+ fjes_hw_raise_interrupt(hw, epidx,
+ REG_ICTL_MASK_TXRX_STOP_REQ);
+
+ set_bit(epidx, &hw->txrx_stop_req_bit);
+ hw->ep_shm_info[epidx].tx.
+ info->v1i.rx_status |=
+ FJES_RX_STOP_REQ_REQUEST;
+ set_bit(epidx, &hw->hw_info.buffer_unshare_reserve_bit);
+ }
+
+ }
+
+ if (irq_bit || adapter->unshare_watch_bitmask) {
+ if (!work_pending(&adapter->unshare_watch_task))
+ queue_work(adapter->control_wq,
+ &adapter->unshare_watch_task);
+ }
+}
+
+static void fjes_hw_epstop_task(struct work_struct *work)
+{
+ struct fjes_hw *hw = container_of(work,
+ struct fjes_hw, epstop_task);
+ struct fjes_adapter *adapter = (struct fjes_adapter *)hw->back;
+ int epid_bit;
+ unsigned long remain_bit;
+
+ while ((remain_bit = hw->epstop_req_bit)) {
+
+ for (epid_bit = 0; remain_bit; (remain_bit >>= 1),
+ (epid_bit++)) {
+
+ if (remain_bit & 1) {
+
+ hw->ep_shm_info[epid_bit].
+ tx.info->v1i.rx_status |=
+ FJES_RX_STOP_REQ_DONE;
+
+ clear_bit(epid_bit, &hw->epstop_req_bit);
+ set_bit(epid_bit,
+ &adapter->unshare_watch_bitmask);
+
+ if (!work_pending(&adapter->unshare_watch_task))
+ queue_work(adapter->control_wq,
+ &adapter->unshare_watch_task);
+ }
+ }
+ }
+}
diff --git a/drivers/platform/x86/fjes/fjes_main.c b/drivers/platform/x86/fjes/fjes_main.c
index 80aaf4d..0bf8efc 100644
--- a/drivers/platform/x86/fjes/fjes_main.c
+++ b/drivers/platform/x86/fjes/fjes_main.c
@@ -23,6 +23,8 @@
#include <linux/types.h>
#include <linux/nls.h>
#include <linux/platform_device.h>
+#include <linux/netdevice.h>
+#include <linux/interrupt.h>
#include "fjes.h"
@@ -43,6 +45,22 @@ 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_tx_retry(struct net_device *);
+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 irqreturn_t fjes_intr(int, void*);
static int fjes_acpi_add(struct acpi_device *);
static int fjes_acpi_remove(struct acpi_device *);
@@ -51,6 +69,17 @@ 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_force_close_task(struct work_struct *);
+static void fjes_tx_stall_task(struct work_struct *);
+static void fjes_raise_intr_rxdata_task(struct work_struct *);
+static void fjes_watch_unsahre_task(struct work_struct *);
+static void fjes_irq_watch_task(struct work_struct *);
+static void fjes_netdev_setup(struct net_device *);
+
+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},
@@ -224,6 +253,831 @@ static acpi_status fjes_get_acpi_resource(struct acpi_resource *acpi_res,
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)
+{
+ int result;
+ struct fjes_adapter *adapter = netdev_priv(netdev);
+ struct fjes_hw *hw = &adapter->hw;
+
+ 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;
+ int epidx;
+
+ netif_tx_stop_all_queues(netdev);
+ netif_carrier_off(netdev);
+
+ fjes_hw_raise_epstop(hw);
+
+ napi_disable(&adapter->napi);
+
+ for (epidx = 0; epidx < hw->max_epid; epidx++) {
+ if (epidx == hw->my_epid)
+ continue;
+
+ adapter->hw.ep_shm_info[epidx].tx.info->v1i.rx_status &=
+ ~FJES_RX_POLL_WORK;
+ }
+
+ fjes_free_irq(adapter);
+
+ cancel_work_sync(&adapter->tx_stall_task);
+ cancel_work_sync(&adapter->raise_intr_rxdata_task);
+ cancel_work_sync(&adapter->unshare_watch_task);
+ adapter->unshare_watch_bitmask = 0;
+
+ 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)
+{
+ int epidx;
+ struct ep_share_mem_info *buf_pair;
+ int result;
+ struct fjes_hw *hw = &adapter->hw;
+ struct net_device *netdev = adapter->netdev;
+
+
+ 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]);
+
+ fjes_hw_setup_epbuf(&(buf_pair->tx), netdev->dev_addr,
+ netdev->mtu);
+
+ 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)
+{
+ int epidx;
+ struct ep_share_mem_info *buf_pair;
+ int result;
+ struct fjes_hw *hw = &adapter->hw;
+ struct net_device *netdev = adapter->netdev;
+ struct fjes_device_command_param param;
+ bool reset_flag = false;
+
+ 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];
+
+ fjes_hw_setup_epbuf(&buf_pair->tx, netdev->dev_addr,
+ netdev->mtu);
+
+ 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 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;
+ enum ep_partner_status pstatus;
+
+ int len;
+ char *data, shortpkt[VLAN_ETH_HLEN];
+
+ u16 queue_no = 0;
+ struct netdev_queue *cur_queue = netdev_get_tx_queue(netdev, queue_no);
+ netdev_tx_t ret = NETDEV_TX_OK;
+ struct ethhdr *eth;
+ int dest_epid;
+
+ int max_epid, my_epid;
+ u16 vlan_id = 0;
+ bool vlan = false;
+ bool is_multi = false;
+
+ 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[my_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[my_epid].net_stats.tx_dropped += 1;
+ adapter->stats64.tx_errors += 1;
+ hw->ep_shm_info[my_epid].net_stats.tx_errors += 1;
+
+ ret = NETDEV_TX_OK;
+
+ } else if ((vlan == true) &&
+ !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[my_epid].net_stats.tx_fifo_errors += 1;
+ adapter->stats64.tx_errors += 1;
+ hw->ep_shm_info[my_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[my_epid].net_stats.tx_packets += 1;
+ adapter->stats64.tx_bytes += len;
+ hw->ep_shm_info[my_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 *curQueue = netdev_get_tx_queue(netdev, 0);
+
+ netif_tx_wake_queue(curQueue);
+}
+
+
+
+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)
+{
+ int idx;
+ bool running = netif_running(netdev);
+ int ret = 0;
+
+ 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;
+
+ if (running)
+ fjes_close(netdev);
+
+ netdev->mtu = new_mtu;
+
+ if (running)
+ ret = fjes_open(netdev);
+
+ return ret;
+ }
+ }
+
+ return -EINVAL;
+}
+
+
+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;
+
+ status = fjes_hw_get_partner_ep_status(hw, src_epid);
+ switch (status) {
+ case EP_PARTNER_UNSHARE:
+ default:
+ break;
+ case EP_PARTNER_COMPLETE:
+ break;
+ case EP_PARTNER_WAITING:
+ if (src_epid < hw->my_epid) {
+ hw->ep_shm_info[src_epid].tx.info->v1i.rx_status |=
+ FJES_RX_STOP_REQ_DONE;
+
+ 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;
+
+ 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:
+ hw->ep_shm_info[src_epid].tx.info->v1i.rx_status |=
+ FJES_RX_STOP_REQ_DONE;
+ 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_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_DEV_STOP_REQ)
+ fjes_stop_req_irq(adapter, icr & REG_IS_MASK_EPID);
+
+ 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;
+ int cur_epid;
+ int max_epid;
+ int i;
+ enum ep_partner_status pstatus;
+
+ 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 *frameBuf;
+
+ *cur_epid = fjes_rxframe_search_exist(adapter, *cur_epid);
+ if (*cur_epid < 0)
+ return NULL;
+
+ frameBuf =
+ fjes_hw_epbuf_rx_curpkt_get_addr(&
+ (adapter->hw.
+ ep_shm_info[*cur_epid].rx), psize);
+
+ return frameBuf;
+}
+
+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 fjes_hw *hw = &adapter->hw;
+ struct net_device *netdev = napi->dev;
+ int work_done = 0;
+ struct sk_buff *skb;
+ void *frameData;
+ size_t frameLen;
+ int cur_epid = 0;
+ int epidx = 0;
+
+ for (epidx = 0; epidx < hw->max_epid; epidx++) {
+ if (epidx == hw->my_epid)
+ continue;
+
+ adapter->hw.ep_shm_info[epidx].tx.info->v1i.rx_status |=
+ FJES_RX_POLL_WORK;
+ }
+
+ while (work_done < budget) {
+
+ prefetch(&adapter->hw);
+ frameData = fjes_rxframe_get(adapter, &frameLen, &cur_epid);
+
+ if (frameData) {
+
+ skb = napi_alloc_skb(napi, frameLen);
+ 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, frameLen), frameData,
+ frameLen);
+ skb->protocol = eth_type_trans(skb, netdev);
+ skb->ip_summed = CHECKSUM_UNNECESSARY; /* don't check it */
+
+ 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 += frameLen;
+ hw->ep_shm_info[cur_epid].net_stats.rx_bytes += frameLen;
+
+
+ if (is_multicast_ether_addr
+ (((struct ethhdr *)frameData)->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 {
+
+ for (epidx = 0; epidx < hw->max_epid; epidx++) {
+ if (epidx == hw->my_epid)
+ continue;
+ adapter->hw.ep_shm_info[epidx].tx.info->v1i.rx_status &=
+ ~FJES_RX_POLL_WORK;
+ }
+
+ fjes_hw_set_irqmask(hw, REG_ICTL_MASK_RX_DATA, false);
+ }
+ }
+
+ return work_done;
+}
+
+
/*
* fjes_probe - Device Initialization Routine
*
@@ -231,7 +1085,84 @@ static acpi_status fjes_get_acpi_resource(struct acpi_resource *acpi_res,
*/
static int fjes_probe(struct platform_device *plat_dev)
{
+ struct net_device *netdev;
+ struct fjes_adapter *adapter;
+ struct fjes_hw *hw;
+ struct resource *res;
+ 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_alloc_netdev;
+
+ 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_sw_init;
+
+
+ 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_unsahre_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 = res->end - res->start;
+ hw->hw_res.irq = platform_get_irq(plat_dev, 0);
+ err = fjes_hw_init(&adapter->hw);
+ if (err)
+ goto err_hw_init;
+
+ /* 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_register;
+
+ netif_carrier_off(netdev);
+
return 0;
+
+err_register:
+ fjes_hw_exit(&adapter->hw);
+err_hw_init:
+err_sw_init:
+ free_netdev(netdev);
+err_alloc_netdev:
+ return err;
}
/*
@@ -239,7 +1170,343 @@ static int fjes_probe(struct platform_device *plat_dev)
*/
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);
+ cancel_work_sync(&adapter->force_close_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);
+ cancel_work_sync(&hw->update_zone_task);
+ cancel_work_sync(&hw->epstop_task);
+
+ 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;
+ netdev->mtu = fjes_support_mtu[0];
+ netdev->flags |= IFF_BROADCAST;
+ netdev->features |= NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_FILTER;
+
+}
+
+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_tx_stall_task(struct work_struct *work)
+{
+ struct fjes_adapter *adapter = container_of(work,
+ struct fjes_adapter, tx_stall_task);
+ struct fjes_hw *hw = &adapter->hw;
+ struct net_device *netdev = adapter->netdev;
+ enum ep_partner_status pstatus;
+ int epid;
+ int max_epid, my_epid;
+ union ep_buffer_info *info;
+ int all_queue_available;
+ int i;
+ int sendable;
+
+ 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 (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_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;
+ int epid;
+ int max_epid, my_epid;
+ enum ep_partner_status pstatus;
+
+ 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_hw_raise_interrupt(hw, epid, REG_ICTL_MASK_RX_DATA);
+
+ }
+
+ }
+
+ usleep_range(500, 1000);
+
+}
+
+static void fjes_watch_unsahre_task(struct work_struct *work)
+{
+ struct fjes_adapter *adapter = container_of(work,
+ struct fjes_adapter, unshare_watch_task);
+ struct fjes_hw *hw = &adapter->hw;
+ struct net_device *netdev = adapter->netdev;
+ int epidx;
+ int max_epid, my_epid;
+ unsigned long unshare_watch_bitmask;
+ 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;
+
+ if (test_bit(epidx, &hw->txrx_stop_req_bit)) {
+
+ is_shared = fjes_hw_epid_is_shared(hw->hw_info.share, epidx);
+ if (!is_shared ||
+ (is_shared &&
+ (FJES_RX_STOP_REQ_DONE &
+ hw->ep_shm_info[epidx].rx.info->v1i.rx_status))) {
+
+ 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);
+
+ fjes_hw_setup_epbuf(&hw->ep_shm_info[epidx].tx,
+ netdev->dev_addr, netdev->mtu);
+
+ clear_bit(epidx, &hw->txrx_stop_req_bit);
+ clear_bit(epidx, &unshare_watch_bitmask);
+ clear_bit(epidx, &hw->hw_info.buffer_unshare_reserve_bit);
+
+ }
+ }
+
+ is_shared = fjes_hw_epid_is_shared(hw->hw_info.share, epidx);
+ if (!is_shared && test_bit(epidx, &unshare_watch_bitmask)) {
+
+ 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);
+
+ fjes_hw_setup_epbuf(&hw->ep_shm_info[epidx].tx,
+ netdev->dev_addr, netdev->mtu);
+
+ 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);
+
+ fjes_hw_setup_epbuf(&hw->ep_shm_info[epidx].tx,
+ netdev->dev_addr, netdev->mtu);
+
+ 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)) {
+ hw->ep_shm_info[epidx].tx.info->v1i.rx_status &=
+ ~FJES_RX_STOP_REQ_DONE;
+ }
+ }
+
+ }
+
+}
+
+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);
+ }
+
+}
+
diff --git a/drivers/platform/x86/fjes/fjes_regs.h b/drivers/platform/x86/fjes/fjes_regs.h
index 490737b..dbccf71 100644
--- a/drivers/platform/x86/fjes/fjes_regs.h
+++ b/drivers/platform/x86/fjes/fjes_regs.h
@@ -147,5 +147,4 @@ do { \
#define rd32(reg) (fjes_hw_rd32(hw, reg))
-
#endif /* FJES_REGS_H_ */
--
1.8.3.1
--
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