[PATCH v2 net-next 0/6] qlcnic: bug fixes and feature updates

[PATCH v2 net-next 0/6] qlcnic: bug fixes and feature updates

[Jitendra Kalsaria]

From: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>

Patch#1 "qlcnic: fix unsupported CDRP command error message" with commit id 
"e42ede226c067fef541e4240f919ed2baf25d268" is a re-submission and also respin
as suggested by Joe Perches. We are re-submitting the same patch because this
patch got undone by the recent driver refactoring.

Patch#5 did not get through in the last submission.

Please apply to net-next.

Thanks,
Jitendra

[PATCH v2 net-next 1/6] qlcnic: fix unsupported CDRP command error message.

[Jitendra Kalsaria]

From: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>

Added detailed error messages for FW CDRP command failure

Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
---
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c |   25 +++++++++++++++++++++-
 1 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c
index 4a3bd64..6308d4d 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c
@@ -126,6 +126,7 @@ int qlcnic_82xx_issue_cmd(struct qlcnic_adapter *adapter,
 	u32 signature;
 	struct pci_dev *pdev = adapter->pdev;
 	struct qlcnic_hardware_context *ahw = adapter->ahw;
+	const char *fmt;
 
 	signature = qlcnic_get_cmd_signature(ahw);
 
@@ -147,8 +148,28 @@ int qlcnic_82xx_issue_cmd(struct qlcnic_adapter *adapter,
 		cmd->rsp.arg[0] = QLCNIC_RCODE_TIMEOUT;
 	} else if (rsp == QLCNIC_CDRP_RSP_FAIL) {
 		cmd->rsp.arg[0] = QLCRD32(adapter, QLCNIC_CDRP_ARG(1));
-		dev_err(&pdev->dev, "failed card response code:0x%x\n",
-			cmd->rsp.arg[0]);
+		switch (cmd->rsp.arg[0]) {
+		case QLCNIC_RCODE_INVALID_ARGS:
+			fmt = "CDRP invalid args: [%d]\n";
+			break;
+		case QLCNIC_RCODE_NOT_SUPPORTED:
+		case QLCNIC_RCODE_NOT_IMPL:
+			fmt = "CDRP command not supported: [%d]\n";
+			break;
+		case QLCNIC_RCODE_NOT_PERMITTED:
+			fmt = "CDRP requested action not permitted: [%d]\n";
+			break;
+		case QLCNIC_RCODE_INVALID:
+			fmt = "CDRP invalid or unknown cmd received: [%d]\n";
+			break;
+		case QLCNIC_RCODE_TIMEOUT:
+			fmt = "CDRP command timeout: [%d]\n";
+			break;
+		default:
+			fmt = "CDRP command failed: [%d]\n";
+			break;
+		}
+		dev_err(&pdev->dev, fmt, cmd->rsp.arg[0]);
 	} else if (rsp == QLCNIC_CDRP_RSP_OK)
 		cmd->rsp.arg[0] = QLCNIC_RCODE_SUCCESS;
 
-- 
1.7.1

[PATCH v2 net-next 2/6] qlcnic: fix mailbox interrupt.

[Jitendra Kalsaria]

From: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>

o Config interrupt is not needed for mailbox interrupts.

Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
---
 .../net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c    |    4 +--
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c    |   27 +++++++++++++++++--
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c   |   17 +++---------
 3 files changed, 29 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
index f7b39d1..e92cc52 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
@@ -497,8 +497,6 @@ int qlcnic_83xx_setup_mbx_intr(struct qlcnic_adapter *adapter)
 
 	/* Enable mailbox interrupt */
 	qlcnic_83xx_enable_mbx_intrpt(adapter);
-	if (adapter->flags & QLCNIC_MSIX_ENABLED)
-		err = qlcnic_83xx_config_intrpt(adapter, 1);
 
 	return err;
 }
@@ -1915,7 +1913,7 @@ int qlcnic_83xx_config_intrpt(struct qlcnic_adapter *adapter, bool op_type)
 	u32 val, temp;
 	struct qlcnic_cmd_args cmd;
 
-	max_ints = adapter->ahw->num_msix;
+	max_ints = adapter->ahw->num_msix - 1;
 	qlcnic_alloc_mbx_args(&cmd, adapter, QLCNIC_CMD_CONFIG_INTRPT);
 	cmd.req.arg[1] = max_ints;
 	for (i = 0, index = 2; i < max_ints; i++) {
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c
index 6308d4d..a69097c 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ctx.c
@@ -599,9 +599,17 @@ int qlcnic_fw_create_ctx(struct qlcnic_adapter *dev)
 		dev->flags &= ~QLCNIC_NEED_FLR;
 	}
 
+	if (qlcnic_83xx_check(dev) && (dev->flags & QLCNIC_MSIX_ENABLED)) {
+		if (dev->ahw->diag_test != QLCNIC_LOOPBACK_TEST) {
+			err = qlcnic_83xx_config_intrpt(dev, 1);
+			if (err)
+				return err;
+		}
+	}
+
 	err = qlcnic_fw_cmd_create_rx_ctx(dev);
 	if (err)
-		return err;
+		goto err_out;
 
 	for (ring = 0; ring < dev->max_drv_tx_rings; ring++) {
 		err = qlcnic_fw_cmd_create_tx_ctx(dev,
@@ -610,18 +618,25 @@ int qlcnic_fw_create_ctx(struct qlcnic_adapter *dev)
 		if (err) {
 			qlcnic_fw_cmd_destroy_rx_ctx(dev);
 			if (ring == 0)
-				return err;
+				goto err_out;
 
 			for (i = 0; i < ring; i++)
 				qlcnic_fw_cmd_destroy_tx_ctx(dev,
 							     &dev->tx_ring[i]);
 
-			return err;
+			goto err_out;
 		}
 	}
 
 	set_bit(__QLCNIC_FW_ATTACHED, &dev->state);
 	return 0;
+
+err_out:
+	if (qlcnic_83xx_check(dev) && (dev->flags & QLCNIC_MSIX_ENABLED)) {
+		if (dev->ahw->diag_test != QLCNIC_LOOPBACK_TEST)
+			qlcnic_83xx_config_intrpt(dev, 0);
+	}
+	return err;
 }
 
 void qlcnic_fw_destroy_ctx(struct qlcnic_adapter *adapter)
@@ -633,6 +648,12 @@ void qlcnic_fw_destroy_ctx(struct qlcnic_adapter *adapter)
 		for (ring = 0; ring < adapter->max_drv_tx_rings; ring++)
 			qlcnic_fw_cmd_destroy_tx_ctx(adapter,
 						     &adapter->tx_ring[ring]);
+
+		if (qlcnic_83xx_check(adapter) &&
+		    (adapter->flags & QLCNIC_MSIX_ENABLED)) {
+			if (adapter->ahw->diag_test != QLCNIC_LOOPBACK_TEST)
+				qlcnic_83xx_config_intrpt(adapter, 0);
+		}
 		/* Allow dma queues to drain after context reset */
 		mdelay(20);
 	}
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index b953168..f084dc1 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -1965,11 +1965,8 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	return 0;
 
 err_out_disable_mbx_intr:
-	if (qlcnic_83xx_check(adapter)) {
-		if (adapter->flags & QLCNIC_MSIX_ENABLED)
-			qlcnic_83xx_config_intrpt(adapter, 0);
+	if (qlcnic_83xx_check(adapter))
 		qlcnic_83xx_free_mbx_intr(adapter);
-	}
 
 err_out_disable_msi:
 	qlcnic_teardown_intr(adapter);
@@ -2015,8 +2012,6 @@ static void qlcnic_remove(struct pci_dev *pdev)
 	unregister_netdev(netdev);
 
 	if (qlcnic_83xx_check(adapter)) {
-		if (adapter->flags & QLCNIC_MSIX_ENABLED)
-			qlcnic_83xx_config_intrpt(adapter, 0);
 		qlcnic_83xx_free_mbx_intr(adapter);
 		qlcnic_83xx_register_nic_idc_func(adapter, 0);
 		cancel_delayed_work_sync(&adapter->idc_aen_work);
@@ -3107,8 +3102,6 @@ static pci_ers_result_t qlcnic_io_error_detected(struct pci_dev *pdev,
 		qlcnic_down(adapter, netdev);
 
 	if (qlcnic_83xx_check(adapter)) {
-		if (adapter->flags & QLCNIC_MSIX_ENABLED)
-			qlcnic_83xx_config_intrpt(adapter, 0);
 		qlcnic_83xx_free_mbx_intr(adapter);
 		qlcnic_83xx_register_nic_idc_func(adapter, 0);
 		cancel_delayed_work_sync(&adapter->idc_aen_work);
@@ -3203,13 +3196,11 @@ int qlcnic_set_max_rss(struct qlcnic_adapter *adapter, u8 data, size_t len)
 	if (netif_running(netdev))
 		__qlcnic_down(adapter, netdev);
 
-	if (qlcnic_83xx_check(adapter)) {
-		if (adapter->flags & QLCNIC_MSIX_ENABLED)
-			qlcnic_83xx_config_intrpt(adapter, 0);
+	qlcnic_detach(adapter);
+
+	if (qlcnic_83xx_check(adapter))
 		qlcnic_83xx_free_mbx_intr(adapter);
-	}
 
-	qlcnic_detach(adapter);
 	qlcnic_teardown_intr(adapter);
 	err = qlcnic_setup_intr(adapter, data);
 	if (err) {
-- 
1.7.1

[PATCH v2 net-next 3/6] qlcnic: refactor Legacy interrupt handling for 83xx

[Jitendra Kalsaria]

From: Himanshu Madhani <himanshu.madhani@qlogic.com>

o Cleanly seperate 83xx Legacy interrupt handling code from 82xx
o Update 83xx Legacy interrupt handling code to match with the spec

Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
---
 .../net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c    |  130 +++++++++++++++++---
 .../net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h    |    3 +
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c     |   30 +----
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c   |   37 ++++--
 4 files changed, 144 insertions(+), 56 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
index e92cc52..cd5ae88 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
@@ -388,12 +388,45 @@ int qlcnic_83xx_setup_intr(struct qlcnic_adapter *adapter, u8 num_intr)
 	return 0;
 }
 
-inline void qlcnic_83xx_enable_intr(struct qlcnic_adapter *adapter,
-				    struct qlcnic_host_sds_ring *sds_ring)
+inline void qlcnic_83xx_clear_legacy_intr_mask(struct qlcnic_adapter *adapter)
+{
+	writel(0, adapter->tgt_mask_reg);
+}
+
+/* Enable MSI-x and INT-x interrupts */
+void qlcnic_83xx_enable_intr(struct qlcnic_adapter *adapter,
+			     struct qlcnic_host_sds_ring *sds_ring)
 {
 	writel(0, sds_ring->crb_intr_mask);
-	if (!QLCNIC_IS_MSI_FAMILY(adapter))
-		writel(0, adapter->tgt_mask_reg);
+}
+
+/* Disable MSI-x and INT-x interrupts */
+void qlcnic_83xx_disable_intr(struct qlcnic_adapter *adapter,
+			      struct qlcnic_host_sds_ring *sds_ring)
+{
+	writel(1, sds_ring->crb_intr_mask);
+}
+
+inline void qlcnic_83xx_enable_legacy_msix_mbx_intr(struct qlcnic_adapter
+						    *adapter)
+{
+	u32 mask;
+
+	/* Mailbox in MSI-x mode and Legacy Interrupt share the same
+	 * source register. We could be here before contexts are created
+	 * and sds_ring->crb_intr_mask has not been initialized, calculate
+	 * BAR offset for Interrupt Source Register
+	 */
+	mask = QLCRDX(adapter->ahw, QLCNIC_DEF_INT_MASK);
+	writel(0, adapter->ahw->pci_base0 + mask);
+}
+
+inline void qlcnic_83xx_disable_mbx_intr(struct qlcnic_adapter *adapter)
+{
+	u32 mask;
+
+	mask = QLCRDX(adapter->ahw, QLCNIC_DEF_INT_MASK);
+	writel(1, adapter->ahw->pci_base0 + mask);
 }
 
 static inline void qlcnic_83xx_get_mbx_data(struct qlcnic_adapter *adapter,
@@ -419,8 +452,12 @@ irqreturn_t qlcnic_83xx_clear_legacy_intr(struct qlcnic_adapter *adapter)
 		adapter->stats.spurious_intr++;
 		return IRQ_NONE;
 	}
+	/* The barrier is required to ensure writes to the registers */
+	wmb();
+
 	/* clear the interrupt trigger control register */
 	writel(0, adapter->isr_int_vec);
+	intr_val = readl(adapter->isr_int_vec);
 	do {
 		intr_val = readl(adapter->tgt_status_reg);
 		if (QLC_83XX_INTX_FUNC(intr_val) != ahw->pci_func)
@@ -429,13 +466,51 @@ irqreturn_t qlcnic_83xx_clear_legacy_intr(struct qlcnic_adapter *adapter)
 	} while (QLC_83XX_VALID_INTX_BIT30(intr_val) &&
 		 (retries < QLC_83XX_LEGACY_INTX_MAX_RETRY));
 
-	if (retries == QLC_83XX_LEGACY_INTX_MAX_RETRY) {
-		dev_info(&adapter->pdev->dev,
-			 "Reached maximum retries to clear legacy interrupt\n");
+	return IRQ_HANDLED;
+}
+
+static void qlcnic_83xx_poll_process_aen(struct qlcnic_adapter *adapter)
+{
+	u32 resp, event;
+	unsigned long flags;
+
+	spin_lock_irqsave(&adapter->ahw->mbx_lock, flags);
+
+	resp = QLCRDX(adapter->ahw, QLCNIC_FW_MBX_CTRL);
+	if (!(resp & QLCNIC_SET_OWNER))
+		goto out;
+
+	event = readl(QLCNIC_MBX_FW(adapter->ahw, 0));
+	if (event &  QLCNIC_MBX_ASYNC_EVENT)
+		qlcnic_83xx_process_aen(adapter);
+out:
+	qlcnic_83xx_enable_legacy_msix_mbx_intr(adapter);
+	spin_unlock_irqrestore(&adapter->ahw->mbx_lock, flags);
+}
+
+irqreturn_t qlcnic_83xx_intr(int irq, void *data)
+{
+	struct qlcnic_adapter *adapter = data;
+	struct qlcnic_host_sds_ring *sds_ring;
+	struct qlcnic_hardware_context *ahw = adapter->ahw;
+
+	if (qlcnic_83xx_clear_legacy_intr(adapter) == IRQ_NONE)
 		return IRQ_NONE;
+
+	qlcnic_83xx_poll_process_aen(adapter);
+
+	if (ahw->diag_test == QLCNIC_INTERRUPT_TEST) {
+		ahw->diag_cnt++;
+		qlcnic_83xx_enable_legacy_msix_mbx_intr(adapter);
+		return IRQ_HANDLED;
 	}
 
-	mdelay(QLC_83XX_LEGACY_INTX_DELAY);
+	if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
+		qlcnic_83xx_enable_legacy_msix_mbx_intr(adapter);
+	} else {
+		sds_ring = &adapter->recv_ctx->sds_rings[0];
+		napi_schedule(&sds_ring->napi);
+	}
 
 	return IRQ_HANDLED;
 }
@@ -460,14 +535,20 @@ done:
 
 void qlcnic_83xx_free_mbx_intr(struct qlcnic_adapter *adapter)
 {
-	u32 val = 0;
-	u32 num_msix = adapter->ahw->num_msix - 1;
+	u32 val = 0, num_msix = adapter->ahw->num_msix - 1;
 
-	val = (num_msix << 8);
+	if (adapter->flags & QLCNIC_MSIX_ENABLED)
+		num_msix = adapter->ahw->num_msix - 1;
+	else
+		num_msix = 0;
 
 	QLCWRX(adapter->ahw, QLCNIC_MBX_INTR_ENBL, val);
-	if (adapter->flags & QLCNIC_MSIX_ENABLED)
-		free_irq(adapter->msix_entries[num_msix].vector, adapter);
+
+	qlcnic_83xx_disable_mbx_intr(adapter);
+
+	msleep(20);
+	synchronize_irq(adapter->msix_entries[num_msix].vector);
+	free_irq(adapter->msix_entries[num_msix].vector, adapter);
 }
 
 int qlcnic_83xx_setup_mbx_intr(struct qlcnic_adapter *adapter)
@@ -486,13 +567,23 @@ int qlcnic_83xx_setup_mbx_intr(struct qlcnic_adapter *adapter)
 		handler = qlcnic_83xx_handle_aen;
 		val = adapter->msix_entries[adapter->ahw->num_msix - 1].vector;
 		snprintf(name, (IFNAMSIZ + 4),
-			 "%s[%s]", adapter->netdev->name, "aen");
+			 "%s[%s]", "qlcnic", "aen");
 		err = request_irq(val, handler, flags, name, adapter);
 		if (err) {
 			dev_err(&adapter->pdev->dev,
 				"failed to register MBX interrupt\n");
 			return err;
 		}
+	} else {
+		handler = qlcnic_83xx_intr;
+		val = adapter->msix_entries[0].vector;
+		err = request_irq(val, handler, flags, "qlcnic", adapter);
+		if (err) {
+			dev_err(&adapter->pdev->dev,
+				"failed to register INTx interrupt\n");
+			return err;
+		}
+		qlcnic_83xx_clear_legacy_intr_mask(adapter);
 	}
 
 	/* Enable mailbox interrupt */
@@ -604,6 +695,7 @@ void qlcnic_83xx_enable_mbx_intrpt(struct qlcnic_adapter *adapter)
 		val = BIT_2;
 
 	QLCWRX(adapter->ahw, QLCNIC_MBX_INTR_ENBL, val);
+	qlcnic_83xx_enable_legacy_msix_mbx_intr(adapter);
 }
 
 void qlcnic_83xx_check_vf(struct qlcnic_adapter *adapter,
@@ -700,6 +792,7 @@ int qlcnic_83xx_mbx_op(struct qlcnic_adapter *adapter,
 	int i;
 	u16 opcode;
 	u8 mbx_err_code;
+	unsigned long flags;
 	u32 rsp, mbx_val, fw_data, rsp_num, mbx_cmd;
 	struct qlcnic_hardware_context *ahw = adapter->ahw;
 
@@ -711,7 +804,7 @@ int qlcnic_83xx_mbx_op(struct qlcnic_adapter *adapter,
 		return 0;
 	}
 
-	spin_lock(&ahw->mbx_lock);
+	spin_lock_irqsave(&adapter->ahw->mbx_lock, flags);
 	mbx_val = QLCRDX(ahw, QLCNIC_HOST_MBX_CTRL);
 
 	if (mbx_val) {
@@ -721,7 +814,7 @@ int qlcnic_83xx_mbx_op(struct qlcnic_adapter *adapter,
 		      "Mailbox not available, 0x%x, collect FW dump\n",
 		      mbx_val);
 		cmd->rsp.arg[0] = QLCNIC_RCODE_TIMEOUT;
-		spin_unlock(&ahw->mbx_lock);
+		spin_unlock_irqrestore(&adapter->ahw->mbx_lock, flags);
 		return cmd->rsp.arg[0];
 	}
 
@@ -776,7 +869,7 @@ poll:
 out:
 	/* clear fw mbx control register */
 	QLCWRX(ahw, QLCNIC_FW_MBX_CTRL, QLCNIC_CLR_OWNER);
-	spin_unlock(&ahw->mbx_lock);
+	spin_unlock_irqrestore(&adapter->ahw->mbx_lock, flags);
 	return rsp;
 }
 
@@ -1194,7 +1287,7 @@ static void qlcnic_83xx_diag_free_res(struct net_device *netdev,
 	if (adapter->ahw->diag_test == QLCNIC_INTERRUPT_TEST) {
 		for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 			sds_ring = &adapter->recv_ctx->sds_rings[ring];
-			writel(1, sds_ring->crb_intr_mask);
+			qlcnic_83xx_disable_intr(adapter, sds_ring);
 		}
 	}
 
@@ -1730,6 +1823,7 @@ irqreturn_t qlcnic_83xx_handle_aen(int irq, void *data)
 	resp = QLCRDX(adapter->ahw, QLCNIC_FW_MBX_CTRL);
 	if (!(resp & QLCNIC_SET_OWNER))
 		goto out;
+
 	event = readl(QLCNIC_MBX_FW(adapter->ahw, 0));
 	if (event &  QLCNIC_MBX_ASYNC_EVENT)
 		qlcnic_83xx_process_aen(adapter);
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
index f60e28a..127fa27 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
@@ -368,9 +368,12 @@ irqreturn_t qlcnic_83xx_handle_aen(int, void *);
 int qlcnic_83xx_get_port_info(struct qlcnic_adapter *);
 void qlcnic_83xx_enable_mbx_intrpt(struct qlcnic_adapter *);
 irqreturn_t qlcnic_83xx_clear_legacy_intr(struct qlcnic_adapter *);
+irqreturn_t qlcnic_83xx_intr(int, void *);
 irqreturn_t qlcnic_83xx_tmp_intr(int, void *);
 void qlcnic_83xx_enable_intr(struct qlcnic_adapter *,
 			     struct qlcnic_host_sds_ring *);
+void qlcnic_83xx_disable_intr(struct qlcnic_adapter *,
+			     struct qlcnic_host_sds_ring *);
 void qlcnic_83xx_check_vf(struct qlcnic_adapter *,
 			  const struct pci_device_id *);
 void qlcnic_83xx_process_aen(struct qlcnic_adapter *);
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
index 93839f8..662292d 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
@@ -1558,24 +1558,6 @@ skip:
 	return count;
 }
 
-static void qlcnic_83xx_poll_process_aen(struct qlcnic_adapter *adapter)
-{
-	unsigned long flags;
-	u32 mask, resp, event;
-
-	spin_lock_irqsave(&adapter->ahw->mbx_lock, flags);
-	resp = QLCRDX(adapter->ahw, QLCNIC_FW_MBX_CTRL);
-	if (!(resp & QLCNIC_SET_OWNER))
-		goto out;
-	event = readl(QLCNIC_MBX_FW(adapter->ahw, 0));
-	if (event &  QLCNIC_MBX_ASYNC_EVENT)
-		qlcnic_83xx_process_aen(adapter);
-out:
-	mask = QLCRDX(adapter->ahw, QLCNIC_DEF_INT_MASK);
-	writel(0, adapter->ahw->pci_base0 + mask);
-	spin_unlock_irqrestore(&adapter->ahw->mbx_lock, flags);
-}
-
 static int qlcnic_83xx_poll(struct napi_struct *napi, int budget)
 {
 	int tx_complete;
@@ -1589,15 +1571,11 @@ static int qlcnic_83xx_poll(struct napi_struct *napi, int budget)
 	/* tx ring count = 1 */
 	tx_ring = adapter->tx_ring;
 
-	if (!(adapter->flags & QLCNIC_MSIX_ENABLED))
-		qlcnic_83xx_poll_process_aen(adapter);
-
 	tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget);
 	work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget);
 	if ((work_done < budget) && tx_complete) {
 		napi_complete(&sds_ring->napi);
-		if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
-			qlcnic_83xx_enable_intr(adapter, sds_ring);
+		qlcnic_83xx_enable_intr(adapter, sds_ring);
 	}
 
 	return work_done;
@@ -1653,7 +1631,8 @@ void qlcnic_83xx_napi_enable(struct qlcnic_adapter *adapter)
 	for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 		sds_ring = &recv_ctx->sds_rings[ring];
 		napi_enable(&sds_ring->napi);
-		qlcnic_83xx_enable_intr(adapter, sds_ring);
+		if (adapter->flags & QLCNIC_MSIX_ENABLED)
+			qlcnic_83xx_enable_intr(adapter, sds_ring);
 	}
 
 	if (adapter->flags & QLCNIC_MSIX_ENABLED) {
@@ -1677,7 +1656,8 @@ void qlcnic_83xx_napi_disable(struct qlcnic_adapter *adapter)
 
 	for (ring = 0; ring < adapter->max_sds_rings; ring++) {
 		sds_ring = &recv_ctx->sds_rings[ring];
-		writel(1, sds_ring->crb_intr_mask);
+		if (adapter->flags & QLCNIC_MSIX_ENABLED)
+			qlcnic_83xx_disable_intr(adapter, sds_ring);
 		napi_synchronize(&sds_ring->napi);
 		napi_disable(&sds_ring->napi);
 	}
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index f084dc1..3a0f182 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -1269,20 +1269,27 @@ qlcnic_request_irq(struct qlcnic_adapter *adapter)
 			handler = qlcnic_msi_intr;
 		else {
 			flags |= IRQF_SHARED;
-			handler = qlcnic_intr;
+			if (qlcnic_82xx_check(adapter))
+				handler = qlcnic_intr;
+			else
+				handler = qlcnic_83xx_intr;
 		}
 	}
 	adapter->irq = netdev->irq;
 
 	if (adapter->ahw->diag_test != QLCNIC_LOOPBACK_TEST) {
-		for (ring = 0; ring < adapter->max_sds_rings; ring++) {
-			sds_ring = &recv_ctx->sds_rings[ring];
-			snprintf(sds_ring->name, sizeof(int) + IFNAMSIZ,
-				 "%s[%d]", netdev->name, ring);
-			err = request_irq(sds_ring->irq, handler, flags,
-					  sds_ring->name, sds_ring);
-			if (err)
-				return err;
+		if (qlcnic_82xx_check(adapter) ||
+		    (qlcnic_83xx_check(adapter) &&
+		     (adapter->flags & QLCNIC_MSIX_ENABLED))) {
+			for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+				sds_ring = &recv_ctx->sds_rings[ring];
+				snprintf(sds_ring->name, sizeof(int) + IFNAMSIZ,
+					 "%s[%d]", netdev->name, ring);
+				err = request_irq(sds_ring->irq, handler, flags,
+						  sds_ring->name, sds_ring);
+				if (err)
+					return err;
+			}
 		}
 		if (qlcnic_83xx_check(adapter) &&
 		    (adapter->flags & QLCNIC_MSIX_ENABLED)) {
@@ -1292,7 +1299,7 @@ qlcnic_request_irq(struct qlcnic_adapter *adapter)
 				tx_ring = &adapter->tx_ring[ring];
 				snprintf(tx_ring->name, sizeof(int) + IFNAMSIZ,
 					 "%s[%d]", netdev->name,
-				adapter->max_sds_rings + ring);
+					 adapter->max_sds_rings + ring);
 				err = request_irq(tx_ring->irq, handler, flags,
 						  tx_ring->name, tx_ring);
 				if (err)
@@ -1313,9 +1320,13 @@ qlcnic_free_irq(struct qlcnic_adapter *adapter)
 	struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
 
 	if (adapter->ahw->diag_test != QLCNIC_LOOPBACK_TEST) {
-		for (ring = 0; ring < adapter->max_sds_rings; ring++) {
-			sds_ring = &recv_ctx->sds_rings[ring];
-			free_irq(sds_ring->irq, sds_ring);
+		if (qlcnic_82xx_check(adapter) ||
+		    (qlcnic_83xx_check(adapter) &&
+		     (adapter->flags & QLCNIC_MSIX_ENABLED))) {
+			for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+				sds_ring = &recv_ctx->sds_rings[ring];
+				free_irq(sds_ring->irq, sds_ring);
+			}
 		}
 		if (qlcnic_83xx_check(adapter)) {
 			for (ring = 0; ring < adapter->max_drv_tx_rings;
-- 
1.7.1

[PATCH v2 net-next 4/6] qlcnic: fix estimation of receive MSS in case of LRO for 83xx adapter

[Jitendra Kalsaria]

From: Shahed Shaikh <shahed.shaikh@qlogic.com>

Set gso_size to MSS obtained from adapter to avoid incorrect estimation
of receive MSS, which would lead to delayed ACKs in some traffic patterns

Example:
Send two or three packets and wait for ack and only then send
remaining packets.

Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
---
 .../net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h    |    1 +
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c     |   13 ++++++++++-
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c   |   24 +++++++++++++------
 3 files changed, 29 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
index 127fa27..61f81f6 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
@@ -223,6 +223,7 @@ struct qlc_83xx_idc {
 #define QLC_83XX_GET_LSO_CAPABILITY(val)		(val & 0x40)
 #define QLC_83XX_GET_HW_LRO_CAPABILITY(val)		(val & 0x400)
 #define QLC_83XX_GET_VLAN_ALIGN_CAPABILITY(val)	(val & 0x4000)
+#define QLC_83XX_GET_FW_LRO_MSS_CAPABILITY(val)	(val & 0x20000)
 #define QLC_83XX_VIRTUAL_NIC_MODE			0xFF
 #define QLC_83XX_DEFAULT_MODE				0x0
 #define QLCNIC_BRDTYPE_83XX_10G			0x0083
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
index 662292d..2990f45 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
@@ -88,6 +88,8 @@
 #define qlcnic_get_lro_sts_mss(sts_data1)		\
 	((sts_data1 >> 32) & 0x0FFFF)
 
+#define qlcnic_83xx_get_lro_sts_mss(sts) ((sts) & 0xffff)
+
 /* opcode field in status_desc */
 #define QLCNIC_SYN_OFFLOAD	0x03
 #define QLCNIC_RXPKT_DESC  	0x04
@@ -1423,7 +1425,7 @@ qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter,
 	bool push;
 	int l2_hdr_offset, l4_hdr_offset;
 	int index;
-	u16 lro_length, length, data_offset;
+	u16 lro_length, length, data_offset, gso_size;
 	u16 vid = 0xffff;
 
 	if (unlikely(ring > adapter->max_rds_rings))
@@ -1478,6 +1480,15 @@ qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter,
 	th->psh = push;
 	length = skb->len;
 
+	if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) {
+		gso_size = qlcnic_83xx_get_lro_sts_mss(sts_data[0]);
+		skb_shinfo(skb)->gso_size = gso_size;
+		if (skb->protocol == htons(ETH_P_IPV6))
+			skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
+		else
+			skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
+	}
+
 	if (vid != 0xffff)
 		__vlan_hwaccel_put_tag(skb, vid);
 
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index 3a0f182..e03017a 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -1339,11 +1339,24 @@ qlcnic_free_irq(struct qlcnic_adapter *adapter)
 	}
 }
 
+static void qlcnic_get_lro_mss_capability(struct qlcnic_adapter *adapter)
+{
+	u32 capab = 0;
+
+	if (qlcnic_82xx_check(adapter)) {
+		if (adapter->ahw->capabilities2 &
+		    QLCNIC_FW_CAPABILITY_2_LRO_MAX_TCP_SEG)
+			adapter->flags |= QLCNIC_FW_LRO_MSS_CAP;
+	} else {
+		capab = adapter->ahw->capabilities;
+		if (QLC_83XX_GET_FW_LRO_MSS_CAPABILITY(capab))
+			adapter->flags |= QLCNIC_FW_LRO_MSS_CAP;
+	}
+}
+
 int __qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
 {
 	int ring;
-	u32 capab2;
-
 	struct qlcnic_host_rds_ring *rds_ring;
 
 	if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
@@ -1353,12 +1366,7 @@ int __qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
 		return 0;
 	if (qlcnic_set_eswitch_port_config(adapter))
 		return -EIO;
-
-	if (adapter->ahw->capabilities & QLCNIC_FW_CAPABILITY_MORE_CAPS) {
-		capab2 = QLCRD32(adapter, CRB_FW_CAPABILITIES_2);
-		if (capab2 & QLCNIC_FW_CAPABILITY_2_LRO_MAX_TCP_SEG)
-			adapter->flags |= QLCNIC_FW_LRO_MSS_CAP;
-	}
+	qlcnic_get_lro_mss_capability(adapter);
 
 	if (qlcnic_fw_create_ctx(adapter))
 		return -EIO;
-- 
1.7.1

[PATCH v2 net-next 6/6] qlcnic: Bump up the version to 5.1.34

[Jitendra Kalsaria]

From: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>

Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
---
 drivers/net/ethernet/qlogic/qlcnic/qlcnic.h |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
index 01e9ea1..11c3db6 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
@@ -38,8 +38,8 @@
 
 #define _QLCNIC_LINUX_MAJOR 5
 #define _QLCNIC_LINUX_MINOR 1
-#define _QLCNIC_LINUX_SUBVERSION 33
-#define QLCNIC_LINUX_VERSIONID  "5.1.33"
+#define _QLCNIC_LINUX_SUBVERSION 34
+#define QLCNIC_LINUX_VERSIONID  "5.1.34"
 #define QLCNIC_DRV_IDC_VER  0x01
 #define QLCNIC_DRIVER_VERSION  ((_QLCNIC_LINUX_MAJOR << 16) |\
 		 (_QLCNIC_LINUX_MINOR << 8) | (_QLCNIC_LINUX_SUBVERSION))
-- 
1.7.1

Re: [PATCH v2 net-next 0/6] qlcnic: bug fixes and feature updates

[David Miller]

From: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Date: Mon, 18 Feb 2013 17:06:12 -0500

> From: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
> 
> Patch#1 "qlcnic: fix unsupported CDRP command error message" with commit id 
> "e42ede226c067fef541e4240f919ed2baf25d268" is a re-submission and also respin
> as suggested by Joe Perches. We are re-submitting the same patch because this
> patch got undone by the recent driver refactoring.
> 
> Patch#5 did not get through in the last submission.
> 
> Please apply to net-next.

Series applied, thanks.