liquidio: moved octeon_setup_interrupt to lio_core.c

Moving common octeon_setup_interrupt to lio_core.c

Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 202 insertions, 263 deletions

diff --git a/drivers/net/ethernet/cavium/liquidio/lio_core.c b/drivers/net/ethernet/cavium/liquidio/lio_core.c
index 5c5f957f9d40..217200ceecc7 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_core.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_core.c
@@ -864,6 +864,7 @@ static void liquidio_schedule_droq_pkt_handlers(struct octeon_device *oct)
  * @param irq unused
  * @param dev octeon device
  */
+static
 irqreturn_t liquidio_legacy_intr_handler(int irq __attribute__((unused)),
 					 void *dev)
 {
@@ -884,3 +885,202 @@ irqreturn_t liquidio_legacy_intr_handler(int irq __attribute__((unused)),
 
 	return ret;
 }
+
+/**
+ * \brief Setup interrupt for octeon device
+ * @param oct octeon device
+ *
+ *  Enable interrupt in Octeon device as given in the PCI interrupt mask.
+ */
+int octeon_setup_interrupt(struct octeon_device *oct)
+{
+	struct msix_entry *msix_entries;
+	char *queue_irq_names = NULL;
+	int i, num_interrupts = 0;
+	int num_alloc_ioq_vectors;
+	char *aux_irq_name = NULL;
+	int num_ioq_vectors;
+	int irqret, err;
+
+	if (oct->msix_on) {
+		if (OCTEON_CN23XX_PF(oct)) {
+			oct->num_msix_irqs = oct->sriov_info.num_pf_rings;
+			num_interrupts = MAX_IOQ_INTERRUPTS_PER_PF + 1;
+
+			/* one non ioq interrupt for handling
+			 * sli_mac_pf_int_sum
+			 */
+			oct->num_msix_irqs += 1;
+		} else if (OCTEON_CN23XX_VF(oct)) {
+			oct->num_msix_irqs = oct->sriov_info.rings_per_vf;
+			num_interrupts = MAX_IOQ_INTERRUPTS_PER_VF;
+		}
+
+		/* allocate storage for the names assigned to each irq */
+		oct->irq_name_storage =
+			kcalloc(num_interrupts, INTRNAMSIZ, GFP_KERNEL);
+		if (!oct->irq_name_storage) {
+			dev_err(&oct->pci_dev->dev, "Irq name storage alloc failed...\n");
+			return -ENOMEM;
+		}
+
+		queue_irq_names = oct->irq_name_storage;
+
+		if (OCTEON_CN23XX_PF(oct))
+			aux_irq_name = &queue_irq_names
+				[IRQ_NAME_OFF(MAX_IOQ_INTERRUPTS_PER_PF)];
+
+		oct->msix_entries = kcalloc(oct->num_msix_irqs,
+					    sizeof(struct msix_entry),
+					    GFP_KERNEL);
+		if (!oct->msix_entries) {
+			dev_err(&oct->pci_dev->dev, "Memory Alloc failed...\n");
+			kfree(oct->irq_name_storage);
+			oct->irq_name_storage = NULL;
+			return -ENOMEM;
+		}
+
+		msix_entries = (struct msix_entry *)oct->msix_entries;
+
+		/*Assumption is that pf msix vectors start from pf srn to pf to
+		 * trs and not from 0. if not change this code
+		 */
+		if (OCTEON_CN23XX_PF(oct)) {
+			for (i = 0; i < oct->num_msix_irqs - 1; i++)
+				msix_entries[i].entry =
+					oct->sriov_info.pf_srn + i;
+
+			msix_entries[oct->num_msix_irqs - 1].entry =
+				oct->sriov_info.trs;
+		} else if (OCTEON_CN23XX_VF(oct)) {
+			for (i = 0; i < oct->num_msix_irqs; i++)
+				msix_entries[i].entry = i;
+		}
+		num_alloc_ioq_vectors = pci_enable_msix_range(
+						oct->pci_dev, msix_entries,
+						oct->num_msix_irqs,
+						oct->num_msix_irqs);
+		if (num_alloc_ioq_vectors < 0) {
+			dev_err(&oct->pci_dev->dev, "unable to Allocate MSI-X interrupts\n");
+			kfree(oct->msix_entries);
+			oct->msix_entries = NULL;
+			kfree(oct->irq_name_storage);
+			oct->irq_name_storage = NULL;
+			return num_alloc_ioq_vectors;
+		}
+
+		dev_dbg(&oct->pci_dev->dev, "OCTEON: Enough MSI-X interrupts are allocated...\n");
+
+		num_ioq_vectors = oct->num_msix_irqs;
+		/** For PF, there is one non-ioq interrupt handler */
+		if (OCTEON_CN23XX_PF(oct)) {
+			num_ioq_vectors -= 1;
+
+			snprintf(aux_irq_name, INTRNAMSIZ,
+				 "LiquidIO%u-pf%u-aux", oct->octeon_id,
+				 oct->pf_num);
+			irqret = request_irq(
+					msix_entries[num_ioq_vectors].vector,
+					liquidio_legacy_intr_handler, 0,
+					aux_irq_name, oct);
+			if (irqret) {
+				dev_err(&oct->pci_dev->dev,
+					"Request_irq failed for MSIX interrupt Error: %d\n",
+					irqret);
+				pci_disable_msix(oct->pci_dev);
+				kfree(oct->msix_entries);
+				kfree(oct->irq_name_storage);
+				oct->irq_name_storage = NULL;
+				oct->msix_entries = NULL;
+				return irqret;
+			}
+		}
+		for (i = 0 ; i < num_ioq_vectors ; i++) {
+			if (OCTEON_CN23XX_PF(oct))
+				snprintf(&queue_irq_names[IRQ_NAME_OFF(i)],
+					 INTRNAMSIZ, "LiquidIO%u-pf%u-rxtx-%u",
+					 oct->octeon_id, oct->pf_num, i);
+
+			if (OCTEON_CN23XX_VF(oct))
+				snprintf(&queue_irq_names[IRQ_NAME_OFF(i)],
+					 INTRNAMSIZ, "LiquidIO%u-vf%u-rxtx-%u",
+					 oct->octeon_id, oct->vf_num, i);
+
+			irqret = request_irq(msix_entries[i].vector,
+					     liquidio_msix_intr_handler, 0,
+					     &queue_irq_names[IRQ_NAME_OFF(i)],
+					     &oct->ioq_vector[i]);
+
+			if (irqret) {
+				dev_err(&oct->pci_dev->dev,
+					"Request_irq failed for MSIX interrupt Error: %d\n",
+					irqret);
+				/** Freeing the non-ioq irq vector here . */
+				free_irq(msix_entries[num_ioq_vectors].vector,
+					 oct);
+
+				while (i) {
+					i--;
+					/** clearing affinity mask. */
+					irq_set_affinity_hint(
+						      msix_entries[i].vector,
+						      NULL);
+					free_irq(msix_entries[i].vector,
+						 &oct->ioq_vector[i]);
+				}
+				pci_disable_msix(oct->pci_dev);
+				kfree(oct->msix_entries);
+				kfree(oct->irq_name_storage);
+				oct->irq_name_storage = NULL;
+				oct->msix_entries = NULL;
+				return irqret;
+			}
+			oct->ioq_vector[i].vector = msix_entries[i].vector;
+			/* assign the cpu mask for this msix interrupt vector */
+			irq_set_affinity_hint(msix_entries[i].vector,
+					      &oct->ioq_vector[i].affinity_mask
+					      );
+		}
+		dev_dbg(&oct->pci_dev->dev, "OCTEON[%d]: MSI-X enabled\n",
+			oct->octeon_id);
+	} else {
+		err = pci_enable_msi(oct->pci_dev);
+		if (err)
+			dev_warn(&oct->pci_dev->dev, "Reverting to legacy interrupts. Error: %d\n",
+				 err);
+		else
+			oct->flags |= LIO_FLAG_MSI_ENABLED;
+
+		/* allocate storage for the names assigned to the irq */
+		oct->irq_name_storage = kcalloc(1, INTRNAMSIZ, GFP_KERNEL);
+		if (!oct->irq_name_storage)
+			return -ENOMEM;
+
+		queue_irq_names = oct->irq_name_storage;
+
+		if (OCTEON_CN23XX_PF(oct))
+			snprintf(&queue_irq_names[IRQ_NAME_OFF(0)], INTRNAMSIZ,
+				 "LiquidIO%u-pf%u-rxtx-%u",
+				 oct->octeon_id, oct->pf_num, 0);
+
+		if (OCTEON_CN23XX_VF(oct))
+			snprintf(&queue_irq_names[IRQ_NAME_OFF(0)], INTRNAMSIZ,
+				 "LiquidIO%u-vf%u-rxtx-%u",
+				 oct->octeon_id, oct->vf_num, 0);
+
+		irqret = request_irq(oct->pci_dev->irq,
+				     liquidio_legacy_intr_handler,
+				     IRQF_SHARED,
+				     &queue_irq_names[IRQ_NAME_OFF(0)], oct);
+		if (irqret) {
+			if (oct->flags & LIO_FLAG_MSI_ENABLED)
+				pci_disable_msi(oct->pci_dev);
+			dev_err(&oct->pci_dev->dev, "Request IRQ failed with code: %d\n",
+				irqret);
+			kfree(oct->irq_name_storage);
+			oct->irq_name_storage = NULL;
+			return irqret;
+		}
+	}
+	return 0;
+}
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c
index 478144ddebe2..82ed201e7a30 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c
@@ -901,169 +901,6 @@ static inline void update_link_status(struct net_device *netdev,
 	}
 }
 
-/**
- * \brief Setup interrupt for octeon device
- * @param oct octeon device
- *
- *  Enable interrupt in Octeon device as given in the PCI interrupt mask.
- */
-static int octeon_setup_interrupt(struct octeon_device *oct)
-{
-	int irqret, err;
-	struct msix_entry *msix_entries;
-	int i;
-	int num_ioq_vectors;
-	int num_alloc_ioq_vectors;
-	char *queue_irq_names = NULL;
-	char *aux_irq_name = NULL;
-
-	if (OCTEON_CN23XX_PF(oct) && oct->msix_on) {
-		oct->num_msix_irqs = oct->sriov_info.num_pf_rings;
-		/* one non ioq interrupt for handling sli_mac_pf_int_sum */
-		oct->num_msix_irqs += 1;
-
-		/* allocate storage for the names assigned to each irq */
-		oct->irq_name_storage =
-			kcalloc((MAX_IOQ_INTERRUPTS_PER_PF + 1), INTRNAMSIZ,
-				GFP_KERNEL);
-		if (!oct->irq_name_storage) {
-			dev_err(&oct->pci_dev->dev, "Irq name storage alloc failed...\n");
-			return -ENOMEM;
-		}
-
-		queue_irq_names = oct->irq_name_storage;
-		aux_irq_name = &queue_irq_names
-				[IRQ_NAME_OFF(MAX_IOQ_INTERRUPTS_PER_PF)];
-
-		oct->msix_entries = kcalloc(
-		    oct->num_msix_irqs, sizeof(struct msix_entry), GFP_KERNEL);
-		if (!oct->msix_entries) {
-			dev_err(&oct->pci_dev->dev, "Memory Alloc failed...\n");
-			kfree(oct->irq_name_storage);
-			oct->irq_name_storage = NULL;
-			return -ENOMEM;
-		}
-
-		msix_entries = (struct msix_entry *)oct->msix_entries;
-		/*Assumption is that pf msix vectors start from pf srn to pf to
-		 * trs and not from 0. if not change this code
-		 */
-		for (i = 0; i < oct->num_msix_irqs - 1; i++)
-			msix_entries[i].entry = oct->sriov_info.pf_srn + i;
-		msix_entries[oct->num_msix_irqs - 1].entry =
-		    oct->sriov_info.trs;
-		num_alloc_ioq_vectors = pci_enable_msix_range(
-						oct->pci_dev, msix_entries,
-						oct->num_msix_irqs,
-						oct->num_msix_irqs);
-		if (num_alloc_ioq_vectors < 0) {
-			dev_err(&oct->pci_dev->dev, "unable to Allocate MSI-X interrupts\n");
-			kfree(oct->msix_entries);
-			oct->msix_entries = NULL;
-			kfree(oct->irq_name_storage);
-			oct->irq_name_storage = NULL;
-			return num_alloc_ioq_vectors;
-		}
-		dev_dbg(&oct->pci_dev->dev, "OCTEON: Enough MSI-X interrupts are allocated...\n");
-
-		num_ioq_vectors = oct->num_msix_irqs;
-
-		/** For PF, there is one non-ioq interrupt handler */
-		num_ioq_vectors -= 1;
-
-		snprintf(aux_irq_name, INTRNAMSIZ,
-			 "LiquidIO%u-pf%u-aux", oct->octeon_id, oct->pf_num);
-		irqret = request_irq(msix_entries[num_ioq_vectors].vector,
-				     liquidio_legacy_intr_handler, 0,
-				     aux_irq_name, oct);
-		if (irqret) {
-			dev_err(&oct->pci_dev->dev,
-				"OCTEON: Request_irq failed for MSIX interrupt Error: %d\n",
-				irqret);
-			pci_disable_msix(oct->pci_dev);
-			kfree(oct->msix_entries);
-			oct->msix_entries = NULL;
-			kfree(oct->irq_name_storage);
-			oct->irq_name_storage = NULL;
-			return irqret;
-		}
-
-		for (i = 0; i < num_ioq_vectors; i++) {
-			snprintf(&queue_irq_names[IRQ_NAME_OFF(i)], INTRNAMSIZ,
-				 "LiquidIO%u-pf%u-rxtx-%u",
-				 oct->octeon_id, oct->pf_num, i);
-
-			irqret = request_irq(msix_entries[i].vector,
-					     liquidio_msix_intr_handler, 0,
-					     &queue_irq_names[IRQ_NAME_OFF(i)],
-					     &oct->ioq_vector[i]);
-			if (irqret) {
-				dev_err(&oct->pci_dev->dev,
-					"OCTEON: Request_irq failed for MSIX interrupt Error: %d\n",
-					irqret);
-				/** Freeing the non-ioq irq vector here . */
-				free_irq(msix_entries[num_ioq_vectors].vector,
-					 oct);
-
-				while (i) {
-					i--;
-					/** clearing affinity mask. */
-					irq_set_affinity_hint(
-						msix_entries[i].vector, NULL);
-					free_irq(msix_entries[i].vector,
-						 &oct->ioq_vector[i]);
-				}
-				pci_disable_msix(oct->pci_dev);
-				kfree(oct->msix_entries);
-				oct->msix_entries = NULL;
-				kfree(oct->irq_name_storage);
-				oct->irq_name_storage = NULL;
-				return irqret;
-			}
-			oct->ioq_vector[i].vector = msix_entries[i].vector;
-			/* assign the cpu mask for this msix interrupt vector */
-			irq_set_affinity_hint(
-					msix_entries[i].vector,
-					(&oct->ioq_vector[i].affinity_mask));
-		}
-		dev_dbg(&oct->pci_dev->dev, "OCTEON[%d]: MSI-X enabled\n",
-			oct->octeon_id);
-	} else {
-		err = pci_enable_msi(oct->pci_dev);
-		if (err)
-			dev_warn(&oct->pci_dev->dev, "Reverting to legacy interrupts. Error: %d\n",
-				 err);
-		else
-			oct->flags |= LIO_FLAG_MSI_ENABLED;
-
-		/* allocate storage for the names assigned to the irq */
-		oct->irq_name_storage = kcalloc(1, INTRNAMSIZ, GFP_KERNEL);
-		if (!oct->irq_name_storage)
-			return -ENOMEM;
-
-		queue_irq_names = oct->irq_name_storage;
-
-		snprintf(&queue_irq_names[IRQ_NAME_OFF(0)], INTRNAMSIZ,
-			 "LiquidIO%u-pf%u-rxtx-%u",
-			 oct->octeon_id, oct->pf_num, 0);
-
-		irqret = request_irq(oct->pci_dev->irq,
-				     liquidio_legacy_intr_handler,
-				     IRQF_SHARED,
-				     &queue_irq_names[IRQ_NAME_OFF(0)], oct);
-		if (irqret) {
-			if (oct->flags & LIO_FLAG_MSI_ENABLED)
-				pci_disable_msi(oct->pci_dev);
-			dev_err(&oct->pci_dev->dev, "Request IRQ failed with code: %d\n",
-				irqret);
-			kfree(oct->irq_name_storage);
-			oct->irq_name_storage = NULL;
-			return irqret;
-		}
-	}
-	return 0;
-}
-
 static struct octeon_device *get_other_octeon_device(struct octeon_device *oct)
 {
 	struct octeon_device *other_oct;
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
index 688b438e3e19..a2f0d628958d 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
@@ -643,104 +643,6 @@ static void update_link_status(struct net_device *netdev,
 }
 
 /**
- * \brief Setup interrupt for octeon device
- * @param oct octeon device
- *
- *  Enable interrupt in Octeon device as given in the PCI interrupt mask.
- */
-static int octeon_setup_interrupt(struct octeon_device *oct)
-{
-	struct msix_entry *msix_entries;
-	char *queue_irq_names = NULL;
-	int num_alloc_ioq_vectors;
-	int num_ioq_vectors;
-	int irqret;
-	int i;
-
-	if (oct->msix_on) {
-		oct->num_msix_irqs = oct->sriov_info.rings_per_vf;
-
-		/* allocate storage for the names assigned to each irq */
-		oct->irq_name_storage =
-			kcalloc(MAX_IOQ_INTERRUPTS_PER_VF, INTRNAMSIZ,
-				GFP_KERNEL);
-		if (!oct->irq_name_storage) {
-			dev_err(&oct->pci_dev->dev, "Irq name storage alloc failed...\n");
-			return -ENOMEM;
-		}
-
-		queue_irq_names = oct->irq_name_storage;
-
-		oct->msix_entries = kcalloc(
-		    oct->num_msix_irqs, sizeof(struct msix_entry), GFP_KERNEL);
-		if (!oct->msix_entries) {
-			dev_err(&oct->pci_dev->dev, "Memory Alloc failed...\n");
-			kfree(oct->irq_name_storage);
-			oct->irq_name_storage = NULL;
-			return -ENOMEM;
-		}
-
-		msix_entries = (struct msix_entry *)oct->msix_entries;
-
-		for (i = 0; i < oct->num_msix_irqs; i++)
-			msix_entries[i].entry = i;
-		num_alloc_ioq_vectors = pci_enable_msix_range(
-						oct->pci_dev, msix_entries,
-						oct->num_msix_irqs,
-						oct->num_msix_irqs);
-		if (num_alloc_ioq_vectors < 0) {
-			dev_err(&oct->pci_dev->dev, "unable to Allocate MSI-X interrupts\n");
-			kfree(oct->msix_entries);
-			oct->msix_entries = NULL;
-			kfree(oct->irq_name_storage);
-			oct->irq_name_storage = NULL;
-			return num_alloc_ioq_vectors;
-		}
-		dev_dbg(&oct->pci_dev->dev, "OCTEON: Enough MSI-X interrupts are allocated...\n");
-
-		num_ioq_vectors = oct->num_msix_irqs;
-
-		for (i = 0; i < num_ioq_vectors; i++) {
-			snprintf(&queue_irq_names[IRQ_NAME_OFF(i)], INTRNAMSIZ,
-				 "LiquidIO%u-vf%u-rxtx-%u",
-				 oct->octeon_id, oct->vf_num, i);
-
-			irqret = request_irq(msix_entries[i].vector,
-					     liquidio_msix_intr_handler, 0,
-					     &queue_irq_names[IRQ_NAME_OFF(i)],
-					     &oct->ioq_vector[i]);
-			if (irqret) {
-				dev_err(&oct->pci_dev->dev,
-					"OCTEON: Request_irq failed for MSIX interrupt Error: %d\n",
-					irqret);
-
-				while (i) {
-					i--;
-					irq_set_affinity_hint(
-					    msix_entries[i].vector, NULL);
-					free_irq(msix_entries[i].vector,
-						 &oct->ioq_vector[i]);
-				}
-				pci_disable_msix(oct->pci_dev);
-				kfree(oct->msix_entries);
-				oct->msix_entries = NULL;
-				kfree(oct->irq_name_storage);
-				oct->irq_name_storage = NULL;
-				return irqret;
-			}
-			oct->ioq_vector[i].vector = msix_entries[i].vector;
-			/* assign the cpu mask for this msix interrupt vector */
-			irq_set_affinity_hint(
-			    msix_entries[i].vector,
-			    (&oct->ioq_vector[i].affinity_mask));
-		}
-		dev_dbg(&oct->pci_dev->dev,
-			"OCTEON[%d]: MSI-X enabled\n", oct->octeon_id);
-	}
-	return 0;
-}
-
-/**
  * \brief PCI probe handler
  * @param pdev PCI device structure
  * @param ent unused
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_network.h b/drivers/net/ethernet/cavium/liquidio/octeon_network.h
index de5eecb56a15..ad29550c91f7 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_network.h
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_network.h
@@ -172,8 +172,8 @@ int liquidio_setup_io_queues(struct octeon_device *octeon_dev, int ifidx);
 irqreturn_t liquidio_msix_intr_handler(int irq __attribute__((unused)),
 				       void *dev);
 
-irqreturn_t liquidio_legacy_intr_handler(int irq __attribute__((unused)),
-					 void *dev);
+int octeon_setup_interrupt(struct octeon_device *oct);
+
 /**
  * \brief Register ethtool operations
  * @param netdev    pointer to network device