* @param irq unused
* @param dev octeon device
*/
+static
irqreturn_t liquidio_legacy_intr_handler(int irq __attribute__((unused)),
void *dev)
{
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;
+}
}
}
-/**
- * \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;
}
/**
- * \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
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
projects / platform / kernel / linux-rpi.git / commitdiff