Commit 8e305cb2 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Martin K. Petersen
Browse files

scsi: snic: switch to pci_irq_alloc_vectors 



Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Acked-by: default avatarNarsimhulu Musini <nmusini@cisco.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 156f8759

drivers/scsi/snic/snic.h

+0 −1
Original line number Diff line number Diff line
@@ -299,7 +299,6 @@ struct snic { 


	/* pci related */

	struct pci_dev *pdev;

	struct msix_entry msix_entry[SNIC_MSIX_INTR_MAX];

	struct snic_msix_entry msix[SNIC_MSIX_INTR_MAX];



	/* io related info */

drivers/scsi/snic/snic_isr.c

+19 −29
Original line number Diff line number Diff line
@@ -93,7 +93,7 @@ snic_free_intr(struct snic *snic) 
	/* ONLY interrupt mode MSIX is supported */

	for (i = 0; i < ARRAY_SIZE(snic->msix); i++) {

		if (snic->msix[i].requested) {

			free_irq(snic->msix_entry[i].vector,

			free_irq(pci_irq_vector(snic->pdev, i),

				 snic->msix[i].devid);

		}

	}
@@ -134,7 +134,7 @@ snic_request_intr(struct snic *snic) 
	snic->msix[SNIC_MSIX_ERR_NOTIFY].devid = snic;



	for (i = 0; i < ARRAY_SIZE(snic->msix); i++) {

		ret = request_irq(snic->msix_entry[i].vector,

		ret = request_irq(pci_irq_vector(snic->pdev, i),

				  snic->msix[i].isr,

				  0,

				  snic->msix[i].devname,
@@ -158,47 +158,37 @@ snic_set_intr_mode(struct snic *snic) 
{

	unsigned int n = ARRAY_SIZE(snic->wq);

	unsigned int m = SNIC_CQ_IO_CMPL_MAX;

	unsigned int i;

	unsigned int vecs = n + m + 1;



	/*

	 * We need n WQs, m CQs, and n+m+1 INTRs

	 * (last INTR is used for WQ/CQ errors and notification area

	 */



	BUILD_BUG_ON((ARRAY_SIZE(snic->wq) + SNIC_CQ_IO_CMPL_MAX) >

			ARRAY_SIZE(snic->intr));

	SNIC_BUG_ON(ARRAY_SIZE(snic->msix_entry) < (n + m + 1));



	for (i = 0; i < (n + m + 1); i++)

		snic->msix_entry[i].entry = i;

	if (snic->wq_count < n || snic->cq_count < n + m)

		goto fail;



	if (pci_alloc_irq_vectors(snic->pdev, vecs, vecs, PCI_IRQ_MSIX) < 0)

		goto fail;



	if (snic->wq_count >= n && snic->cq_count >= (n + m)) {

		if (!pci_enable_msix(snic->pdev,

				     snic->msix_entry,

				     (n + m + 1))) {

	snic->wq_count = n;

	snic->cq_count = n + m;

			snic->intr_count = n + m + 1;

	snic->intr_count = vecs;

	snic->err_intr_offset = SNIC_MSIX_ERR_NOTIFY;



			SNIC_ISR_DBG(snic->shost,

				     "Using MSI-X Interrupts\n");

			svnic_dev_set_intr_mode(snic->vdev,

						VNIC_DEV_INTR_MODE_MSIX);



	SNIC_ISR_DBG(snic->shost, "Using MSI-X Interrupts\n");

	svnic_dev_set_intr_mode(snic->vdev, VNIC_DEV_INTR_MODE_MSIX);

	return 0;

		}

	}



fail:

	svnic_dev_set_intr_mode(snic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN);



	return -EINVAL;

} /* end of snic_set_intr_mode */



void

snic_clear_intr_mode(struct snic *snic)

{

	pci_disable_msix(snic->pdev);



	pci_free_irq_vectors(snic->pdev);

	svnic_dev_set_intr_mode(snic->vdev, VNIC_DEV_INTR_MODE_INTX);

}