#define QLC_DEFAULT_RCV_DESCRIPTORS_SRIOV_VF 2048
#define QLC_DEFAULT_JUMBO_RCV_DESCRIPTORS_SRIOV_VF 512
+#define QLC_83XX_VF_RESET_FAIL_THRESH 8
+#define QLC_BC_CMD_MAX_RETRY_CNT 5
+
+static void qlcnic_sriov_vf_poll_dev_state(struct work_struct *);
+static void qlcnic_sriov_vf_cancel_fw_work(struct qlcnic_adapter *);
static void qlcnic_sriov_cleanup_transaction(struct qlcnic_bc_trans *);
static int qlcnic_sriov_vf_mbx_op(struct qlcnic_adapter *,
struct qlcnic_cmd_args *);
static struct qlcnic_nic_template qlcnic_sriov_vf_ops = {
.config_bridged_mode = qlcnic_config_bridged_mode,
.config_led = qlcnic_config_led,
- .cancel_idc_work = qlcnic_83xx_idc_exit,
+ .cancel_idc_work = qlcnic_sriov_vf_cancel_fw_work,
.napi_add = qlcnic_83xx_napi_add,
.napi_del = qlcnic_83xx_napi_del,
.config_ipaddr = qlcnic_83xx_config_ipaddr,
pci_set_drvdata(adapter->pdev, adapter);
dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
adapter->netdev->name);
+ qlcnic_schedule_work(adapter, qlcnic_sriov_vf_poll_dev_state,
+ adapter->ahw->idc.delay);
return 0;
err_out_send_channel_term:
return err;
}
+static int qlcnic_sriov_check_dev_ready(struct qlcnic_adapter *adapter)
+{
+ u32 state;
+
+ do {
+ msleep(20);
+ if (++adapter->fw_fail_cnt > QLC_BC_CMD_MAX_RETRY_CNT)
+ return -EIO;
+ state = QLCRDX(adapter->ahw, QLC_83XX_IDC_DEV_STATE);
+ } while (state != QLC_83XX_IDC_DEV_READY);
+
+ return 0;
+}
+
int qlcnic_sriov_vf_init(struct qlcnic_adapter *adapter, int pci_using_dac)
{
struct qlcnic_hardware_context *ahw = adapter->ahw;
+ int err;
spin_lock_init(&ahw->mbx_lock);
- set_bit(QLC_83XX_MBX_READY, &adapter->ahw->idc.status);
+ set_bit(QLC_83XX_MBX_READY, &ahw->idc.status);
+ set_bit(QLC_83XX_MODULE_LOADED, &ahw->idc.status);
+ ahw->idc.delay = QLC_83XX_IDC_FW_POLL_DELAY;
+ ahw->reset_context = 0;
+ adapter->fw_fail_cnt = 0;
ahw->msix_supported = 1;
+ adapter->need_fw_reset = 0;
adapter->flags |= QLCNIC_TX_INTR_SHARED;
- if (qlcnic_sriov_setup_vf(adapter, pci_using_dac))
- return -EIO;
+ err = qlcnic_sriov_check_dev_ready(adapter);
+ if (err)
+ return err;
+
+ err = qlcnic_sriov_setup_vf(adapter, pci_using_dac);
+ if (err)
+ return err;
if (qlcnic_read_mac_addr(adapter))
dev_warn(&adapter->pdev->dev, "failed to read mac addr\n");
- set_bit(QLC_83XX_MODULE_LOADED, &adapter->ahw->idc.status);
- adapter->ahw->idc.delay = QLC_83XX_IDC_FW_POLL_DELAY;
- adapter->ahw->reset_context = 0;
- adapter->fw_fail_cnt = 0;
clear_bit(__QLCNIC_RESETTING, &adapter->state);
- adapter->need_fw_reset = 0;
return 0;
}
struct qlcnic_vf_info *vf,
work_func_t func)
{
- if (test_bit(QLC_BC_VF_FLR, &vf->state))
+ if (test_bit(QLC_BC_VF_FLR, &vf->state) ||
+ vf->adapter->need_fw_reset)
return;
INIT_WORK(&vf->trans_work, func);
int err = -EIO;
while (flag) {
- if (test_bit(QLC_BC_VF_FLR, &vf->state))
+ if (test_bit(QLC_BC_VF_FLR, &vf->state) ||
+ vf->adapter->need_fw_reset)
trans->trans_state = QLC_ABORT;
switch (trans->trans_state) {
struct qlcnic_cmd_args cmd;
u8 req;
+ if (adapter->need_fw_reset)
+ return;
+
if (test_bit(QLC_BC_VF_FLR, &vf->state))
return;
int err;
u8 cmd_op;
+ if (adapter->need_fw_reset)
+ return;
+
if (!test_bit(QLC_BC_VF_STATE, &vf->state) &&
hdr->op_type != QLC_BC_CMD &&
hdr->cmd_op != QLCNIC_BC_CMD_CHANNEL_INIT)
return err;
}
+static int qlcnic_sriov_retry_bc_cmd(struct qlcnic_adapter *adapter,
+ struct qlcnic_bc_trans *trans)
+{
+ u8 max = QLC_BC_CMD_MAX_RETRY_CNT;
+ u32 state;
+
+ state = QLCRDX(adapter->ahw, QLC_83XX_IDC_DEV_STATE);
+ if (state == QLC_83XX_IDC_DEV_READY) {
+ msleep(20);
+ clear_bit(QLC_BC_VF_CHANNEL, &trans->vf->state);
+ trans->trans_state = QLC_INIT;
+ if (++adapter->fw_fail_cnt > max)
+ return -EIO;
+ else
+ return 0;
+ }
+
+ return -EIO;
+}
+
static int qlcnic_sriov_vf_mbx_op(struct qlcnic_adapter *adapter,
struct qlcnic_cmd_args *cmd)
{
+ struct qlcnic_hardware_context *ahw = adapter->ahw;
+ struct device *dev = &adapter->pdev->dev;
struct qlcnic_bc_trans *trans;
int err;
u32 rsp_data, opcode, mbx_err_code, rsp;
u16 seq = ++adapter->ahw->sriov->bc.trans_counter;
+ u8 func = ahw->pci_func;
- if (qlcnic_sriov_alloc_bc_trans(&trans))
- return -ENOMEM;
+ rsp = qlcnic_sriov_alloc_bc_trans(&trans);
+ if (rsp)
+ return rsp;
- if (qlcnic_sriov_prepare_bc_hdr(trans, cmd, seq, QLC_BC_COMMAND))
- return -ENOMEM;
+ rsp = qlcnic_sriov_prepare_bc_hdr(trans, cmd, seq, QLC_BC_COMMAND);
+ if (rsp)
+ goto cleanup_transaction;
+retry:
if (!test_bit(QLC_83XX_MBX_READY, &adapter->ahw->idc.status)) {
rsp = -EIO;
QLCDB(adapter, DRV, "MBX not Ready!(cmd 0x%x) for VF 0x%x\n",
- QLCNIC_MBX_RSP(cmd->req.arg[0]), adapter->ahw->pci_func);
+ QLCNIC_MBX_RSP(cmd->req.arg[0]), func);
goto err_out;
}
- err = qlcnic_sriov_send_bc_cmd(adapter, trans, adapter->ahw->pci_func);
+ err = qlcnic_sriov_send_bc_cmd(adapter, trans, func);
if (err) {
- dev_err(&adapter->pdev->dev,
- "MBX command 0x%x timed out for VF %d\n",
- (cmd->req.arg[0] & 0xffff), adapter->ahw->pci_func);
+ dev_err(dev, "MBX command 0x%x timed out for VF %d\n",
+ (cmd->req.arg[0] & 0xffff), func);
rsp = QLCNIC_RCODE_TIMEOUT;
+
+ /* After adapter reset PF driver may take some time to
+ * respond to VF's request. Retry request till maximum retries.
+ */
+ if ((trans->req_hdr->cmd_op == QLCNIC_BC_CMD_CHANNEL_INIT) &&
+ !qlcnic_sriov_retry_bc_cmd(adapter, trans))
+ goto retry;
+
goto err_out;
}
rsp = mbx_err_code;
if (!rsp)
rsp = 1;
- dev_err(&adapter->pdev->dev,
+ dev_err(dev,
"MBX command 0x%x failed with err:0x%x for VF %d\n",
- opcode, mbx_err_code, adapter->ahw->pci_func);
+ opcode, mbx_err_code, func);
}
err_out:
+ if (rsp == QLCNIC_RCODE_TIMEOUT) {
+ ahw->reset_context = 1;
+ adapter->need_fw_reset = 1;
+ clear_bit(QLC_83XX_MBX_READY, &ahw->idc.status);
+ }
+
+cleanup_transaction:
qlcnic_sriov_cleanup_transaction(trans);
return rsp;
}
struct qlcnic_adapter *adapter = netdev_priv(netdev);
struct qlcnic_back_channel *bc = &adapter->ahw->sriov->bc;
+ if (adapter->need_fw_reset)
+ return;
+
qlcnic_sriov_schedule_bc_async_work(bc, qlcnic_sriov_handle_async_multi,
netdev);
}
+
+static int qlcnic_sriov_vf_reinit_driver(struct qlcnic_adapter *adapter)
+{
+ int err;
+
+ set_bit(QLC_83XX_MBX_READY, &adapter->ahw->idc.status);
+ qlcnic_83xx_enable_mbx_intrpt(adapter);
+
+ err = qlcnic_sriov_cfg_bc_intr(adapter, 1);
+ if (err)
+ return err;
+
+ err = qlcnic_sriov_channel_cfg_cmd(adapter, QLCNIC_BC_CMD_CHANNEL_INIT);
+ if (err)
+ goto err_out_cleanup_bc_intr;
+
+ err = qlcnic_sriov_vf_init_driver(adapter);
+ if (err)
+ goto err_out_term_channel;
+
+ return 0;
+
+err_out_term_channel:
+ qlcnic_sriov_channel_cfg_cmd(adapter, QLCNIC_BC_CMD_CHANNEL_TERM);
+
+err_out_cleanup_bc_intr:
+ qlcnic_sriov_cfg_bc_intr(adapter, 0);
+ return err;
+}
+
+static void qlcnic_sriov_vf_attach(struct qlcnic_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+
+ if (netif_running(netdev)) {
+ if (!qlcnic_up(adapter, netdev))
+ qlcnic_restore_indev_addr(netdev, NETDEV_UP);
+ }
+
+ netif_device_attach(netdev);
+}
+
+static void qlcnic_sriov_vf_detach(struct qlcnic_adapter *adapter)
+{
+ struct qlcnic_hardware_context *ahw = adapter->ahw;
+ struct qlcnic_intrpt_config *intr_tbl = ahw->intr_tbl;
+ struct net_device *netdev = adapter->netdev;
+ u8 i, max_ints = ahw->num_msix - 1;
+
+ qlcnic_83xx_disable_mbx_intr(adapter);
+ netif_device_detach(netdev);
+ if (netif_running(netdev))
+ qlcnic_down(adapter, netdev);
+
+ for (i = 0; i < max_ints; i++) {
+ intr_tbl[i].id = i;
+ intr_tbl[i].enabled = 0;
+ intr_tbl[i].src = 0;
+ }
+ ahw->reset_context = 0;
+}
+
+static int qlcnic_sriov_vf_handle_dev_ready(struct qlcnic_adapter *adapter)
+{
+ struct qlcnic_hardware_context *ahw = adapter->ahw;
+ struct device *dev = &adapter->pdev->dev;
+ struct qlc_83xx_idc *idc = &ahw->idc;
+ u8 func = ahw->pci_func;
+ u32 state;
+
+ if ((idc->prev_state == QLC_83XX_IDC_DEV_NEED_RESET) ||
+ (idc->prev_state == QLC_83XX_IDC_DEV_INIT)) {
+ if (!qlcnic_sriov_vf_reinit_driver(adapter)) {
+ qlcnic_sriov_vf_attach(adapter);
+ adapter->fw_fail_cnt = 0;
+ dev_info(dev,
+ "%s: Reinitalization of VF 0x%x done after FW reset\n",
+ __func__, func);
+ } else {
+ dev_err(dev,
+ "%s: Reinitialization of VF 0x%x failed after FW reset\n",
+ __func__, func);
+ state = QLCRDX(ahw, QLC_83XX_IDC_DEV_STATE);
+ dev_info(dev, "Current state 0x%x after FW reset\n",
+ state);
+ }
+ }
+
+ return 0;
+}
+
+static int qlcnic_sriov_vf_handle_context_reset(struct qlcnic_adapter *adapter)
+{
+ struct qlcnic_hardware_context *ahw = adapter->ahw;
+ struct device *dev = &adapter->pdev->dev;
+ struct qlc_83xx_idc *idc = &ahw->idc;
+ u8 func = ahw->pci_func;
+ u32 state;
+
+ adapter->reset_ctx_cnt++;
+
+ /* Skip the context reset and check if FW is hung */
+ if (adapter->reset_ctx_cnt < 3) {
+ adapter->need_fw_reset = 1;
+ clear_bit(QLC_83XX_MBX_READY, &idc->status);
+ dev_info(dev,
+ "Resetting context, wait here to check if FW is in failed state\n");
+ return 0;
+ }
+
+ /* Check if number of resets exceed the threshold.
+ * If it exceeds the threshold just fail the VF.
+ */
+ if (adapter->reset_ctx_cnt > QLC_83XX_VF_RESET_FAIL_THRESH) {
+ clear_bit(QLC_83XX_MODULE_LOADED, &idc->status);
+ adapter->tx_timeo_cnt = 0;
+ adapter->fw_fail_cnt = 0;
+ adapter->reset_ctx_cnt = 0;
+ qlcnic_sriov_vf_detach(adapter);
+ dev_err(dev,
+ "Device context resets have exceeded the threshold, device interface will be shutdown\n");
+ return -EIO;
+ }
+
+ dev_info(dev, "Resetting context of VF 0x%x\n", func);
+ dev_info(dev, "%s: Context reset count %d for VF 0x%x\n",
+ __func__, adapter->reset_ctx_cnt, func);
+ set_bit(__QLCNIC_RESETTING, &adapter->state);
+ adapter->need_fw_reset = 1;
+ clear_bit(QLC_83XX_MBX_READY, &idc->status);
+ qlcnic_sriov_vf_detach(adapter);
+ adapter->need_fw_reset = 0;
+
+ if (!qlcnic_sriov_vf_reinit_driver(adapter)) {
+ qlcnic_sriov_vf_attach(adapter);
+ adapter->netdev->trans_start = jiffies;
+ adapter->tx_timeo_cnt = 0;
+ adapter->reset_ctx_cnt = 0;
+ adapter->fw_fail_cnt = 0;
+ dev_info(dev, "Done resetting context for VF 0x%x\n", func);
+ } else {
+ dev_err(dev, "%s: Reinitialization of VF 0x%x failed\n",
+ __func__, func);
+ state = QLCRDX(ahw, QLC_83XX_IDC_DEV_STATE);
+ dev_info(dev, "%s: Current state 0x%x\n", __func__, state);
+ }
+
+ return 0;
+}
+
+static int qlcnic_sriov_vf_idc_ready_state(struct qlcnic_adapter *adapter)
+{
+ struct qlcnic_hardware_context *ahw = adapter->ahw;
+ int ret = 0;
+
+ if (ahw->idc.prev_state != QLC_83XX_IDC_DEV_READY)
+ ret = qlcnic_sriov_vf_handle_dev_ready(adapter);
+ else if (ahw->reset_context)
+ ret = qlcnic_sriov_vf_handle_context_reset(adapter);
+
+ clear_bit(__QLCNIC_RESETTING, &adapter->state);
+ return ret;
+}
+
+static int qlcnic_sriov_vf_idc_failed_state(struct qlcnic_adapter *adapter)
+{
+ struct qlc_83xx_idc *idc = &adapter->ahw->idc;
+
+ dev_err(&adapter->pdev->dev, "Device is in failed state\n");
+ if (idc->prev_state == QLC_83XX_IDC_DEV_READY)
+ qlcnic_sriov_vf_detach(adapter);
+
+ clear_bit(QLC_83XX_MODULE_LOADED, &idc->status);
+ clear_bit(__QLCNIC_RESETTING, &adapter->state);
+ return -EIO;
+}
+
+static int
+qlcnic_sriov_vf_idc_need_quiescent_state(struct qlcnic_adapter *adapter)
+{
+ struct qlc_83xx_idc *idc = &adapter->ahw->idc;
+
+ dev_info(&adapter->pdev->dev, "Device is in quiescent state\n");
+ if (idc->prev_state == QLC_83XX_IDC_DEV_READY) {
+ set_bit(__QLCNIC_RESETTING, &adapter->state);
+ adapter->tx_timeo_cnt = 0;
+ adapter->reset_ctx_cnt = 0;
+ clear_bit(QLC_83XX_MBX_READY, &idc->status);
+ qlcnic_sriov_vf_detach(adapter);
+ }
+
+ return 0;
+}
+
+static int qlcnic_sriov_vf_idc_init_reset_state(struct qlcnic_adapter *adapter)
+{
+ struct qlc_83xx_idc *idc = &adapter->ahw->idc;
+ u8 func = adapter->ahw->pci_func;
+
+ if (idc->prev_state == QLC_83XX_IDC_DEV_READY) {
+ dev_err(&adapter->pdev->dev,
+ "Firmware hang detected by VF 0x%x\n", func);
+ set_bit(__QLCNIC_RESETTING, &adapter->state);
+ adapter->tx_timeo_cnt = 0;
+ adapter->reset_ctx_cnt = 0;
+ clear_bit(QLC_83XX_MBX_READY, &idc->status);
+ qlcnic_sriov_vf_detach(adapter);
+ }
+ return 0;
+}
+
+static int qlcnic_sriov_vf_idc_unknown_state(struct qlcnic_adapter *adapter)
+{
+ dev_err(&adapter->pdev->dev, "%s: Device in unknown state\n", __func__);
+ return 0;
+}
+
+static void qlcnic_sriov_vf_poll_dev_state(struct work_struct *work)
+{
+ struct qlcnic_adapter *adapter;
+ struct qlc_83xx_idc *idc;
+ int ret = 0;
+
+ adapter = container_of(work, struct qlcnic_adapter, fw_work.work);
+ idc = &adapter->ahw->idc;
+ idc->curr_state = QLCRDX(adapter->ahw, QLC_83XX_IDC_DEV_STATE);
+
+ switch (idc->curr_state) {
+ case QLC_83XX_IDC_DEV_READY:
+ ret = qlcnic_sriov_vf_idc_ready_state(adapter);
+ break;
+ case QLC_83XX_IDC_DEV_NEED_RESET:
+ case QLC_83XX_IDC_DEV_INIT:
+ ret = qlcnic_sriov_vf_idc_init_reset_state(adapter);
+ break;
+ case QLC_83XX_IDC_DEV_NEED_QUISCENT:
+ ret = qlcnic_sriov_vf_idc_need_quiescent_state(adapter);
+ break;
+ case QLC_83XX_IDC_DEV_FAILED:
+ ret = qlcnic_sriov_vf_idc_failed_state(adapter);
+ break;
+ case QLC_83XX_IDC_DEV_QUISCENT:
+ break;
+ default:
+ ret = qlcnic_sriov_vf_idc_unknown_state(adapter);
+ }
+
+ idc->prev_state = idc->curr_state;
+ if (!ret && test_bit(QLC_83XX_MODULE_LOADED, &idc->status))
+ qlcnic_schedule_work(adapter, qlcnic_sriov_vf_poll_dev_state,
+ idc->delay);
+}
+
+static void qlcnic_sriov_vf_cancel_fw_work(struct qlcnic_adapter *adapter)
+{
+ while (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
+ msleep(20);
+
+ clear_bit(QLC_83XX_MODULE_LOADED, &adapter->ahw->idc.status);
+ clear_bit(__QLCNIC_RESETTING, &adapter->state);
+ cancel_delayed_work_sync(&adapter->fw_work);
+}
projects / linux-imx.git / commitdiff