From: Christoph Hellwig Date: Thu, 12 Jan 2017 10:17:29 +0000 (+0100) Subject: scsi: csiostor: switch to pci_alloc_irq_vectors X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=104d9c7f94aa835b9d7bde38b13b611ddb8adbb6;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git scsi: csiostor: switch to pci_alloc_irq_vectors And get automatic MSI-X affinity for free. Signed-off-by: Christoph Hellwig Acked-by: Varun Prakash Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/csiostor/csio_hw.h b/drivers/scsi/csiostor/csio_hw.h index 029bef82c057..62758e830d3b 100644 --- a/drivers/scsi/csiostor/csio_hw.h +++ b/drivers/scsi/csiostor/csio_hw.h @@ -95,7 +95,6 @@ enum { }; struct csio_msix_entries { - unsigned short vector; /* Assigned MSI-X vector */ void *dev_id; /* Priv object associated w/ this msix*/ char desc[24]; /* Description of this vector */ }; diff --git a/drivers/scsi/csiostor/csio_isr.c b/drivers/scsi/csiostor/csio_isr.c index 2fb71c6c3b37..7c8814715711 100644 --- a/drivers/scsi/csiostor/csio_isr.c +++ b/drivers/scsi/csiostor/csio_isr.c @@ -383,17 +383,15 @@ csio_request_irqs(struct csio_hw *hw) int rv, i, j, k = 0; struct csio_msix_entries *entryp = &hw->msix_entries[0]; struct csio_scsi_cpu_info *info; + struct pci_dev *pdev = hw->pdev; if (hw->intr_mode != CSIO_IM_MSIX) { - rv = request_irq(hw->pdev->irq, csio_fcoe_isr, - (hw->intr_mode == CSIO_IM_MSI) ? - 0 : IRQF_SHARED, - KBUILD_MODNAME, hw); + rv = request_irq(pci_irq_vector(pdev, 0), csio_fcoe_isr, + hw->intr_mode == CSIO_IM_MSI ? 0 : IRQF_SHARED, + KBUILD_MODNAME, hw); if (rv) { - if (hw->intr_mode == CSIO_IM_MSI) - pci_disable_msi(hw->pdev); csio_err(hw, "Failed to allocate interrupt line.\n"); - return -EINVAL; + goto out_free_irqs; } goto out; @@ -402,22 +400,22 @@ csio_request_irqs(struct csio_hw *hw) /* Add the MSIX vector descriptions */ csio_add_msix_desc(hw); - rv = request_irq(entryp[k].vector, csio_nondata_isr, 0, + rv = request_irq(pci_irq_vector(pdev, k), csio_nondata_isr, 0, entryp[k].desc, hw); if (rv) { csio_err(hw, "IRQ request failed for vec %d err:%d\n", - entryp[k].vector, rv); - goto err; + pci_irq_vector(pdev, k), rv); + goto out_free_irqs; } - entryp[k++].dev_id = (void *)hw; + entryp[k++].dev_id = hw; - rv = request_irq(entryp[k].vector, csio_fwevt_isr, 0, + rv = request_irq(pci_irq_vector(pdev, k), csio_fwevt_isr, 0, entryp[k].desc, hw); if (rv) { csio_err(hw, "IRQ request failed for vec %d err:%d\n", - entryp[k].vector, rv); - goto err; + pci_irq_vector(pdev, k), rv); + goto out_free_irqs; } entryp[k++].dev_id = (void *)hw; @@ -429,51 +427,31 @@ csio_request_irqs(struct csio_hw *hw) struct csio_scsi_qset *sqset = &hw->sqset[i][j]; struct csio_q *q = hw->wrm.q_arr[sqset->iq_idx]; - rv = request_irq(entryp[k].vector, csio_scsi_isr, 0, + rv = request_irq(pci_irq_vector(pdev, k), csio_scsi_isr, 0, entryp[k].desc, q); if (rv) { csio_err(hw, "IRQ request failed for vec %d err:%d\n", - entryp[k].vector, rv); - goto err; + pci_irq_vector(pdev, k), rv); + goto out_free_irqs; } - entryp[k].dev_id = (void *)q; + entryp[k].dev_id = q; } /* for all scsi cpus */ } /* for all ports */ out: hw->flags |= CSIO_HWF_HOST_INTR_ENABLED; - return 0; -err: - for (i = 0; i < k; i++) { - entryp = &hw->msix_entries[i]; - free_irq(entryp->vector, entryp->dev_id); - } - pci_disable_msix(hw->pdev); - +out_free_irqs: + for (i = 0; i < k; i++) + free_irq(pci_irq_vector(pdev, i), hw->msix_entries[i].dev_id); + pci_free_irq_vectors(hw->pdev); return -EINVAL; } -static void -csio_disable_msix(struct csio_hw *hw, bool free) -{ - int i; - struct csio_msix_entries *entryp; - int cnt = hw->num_sqsets + CSIO_EXTRA_VECS; - - if (free) { - for (i = 0; i < cnt; i++) { - entryp = &hw->msix_entries[i]; - free_irq(entryp->vector, entryp->dev_id); - } - } - pci_disable_msix(hw->pdev); -} - /* Reduce per-port max possible CPUs */ static void csio_reduce_sqsets(struct csio_hw *hw, int cnt) @@ -500,10 +478,9 @@ static int csio_enable_msix(struct csio_hw *hw) { int i, j, k, n, min, cnt; - struct csio_msix_entries *entryp; - struct msix_entry *entries; int extra = CSIO_EXTRA_VECS; struct csio_scsi_cpu_info *info; + struct irq_affinity desc = { .pre_vectors = 2 }; min = hw->num_pports + extra; cnt = hw->num_sqsets + extra; @@ -512,50 +489,35 @@ csio_enable_msix(struct csio_hw *hw) if (hw->flags & CSIO_HWF_USING_SOFT_PARAMS || !csio_is_hw_master(hw)) cnt = min_t(uint8_t, hw->cfg_niq, cnt); - entries = kzalloc(sizeof(struct msix_entry) * cnt, GFP_KERNEL); - if (!entries) - return -ENOMEM; - - for (i = 0; i < cnt; i++) - entries[i].entry = (uint16_t)i; - csio_dbg(hw, "FW supp #niq:%d, trying %d msix's\n", hw->cfg_niq, cnt); - cnt = pci_enable_msix_range(hw->pdev, entries, min, cnt); - if (cnt < 0) { - kfree(entries); + cnt = pci_alloc_irq_vectors_affinity(hw->pdev, min, cnt, + PCI_IRQ_MSIX | PCI_IRQ_AFFINITY, &desc); + if (cnt < 0) return cnt; - } if (cnt < (hw->num_sqsets + extra)) { csio_dbg(hw, "Reducing sqsets to %d\n", cnt - extra); csio_reduce_sqsets(hw, cnt - extra); } - /* Save off vectors */ - for (i = 0; i < cnt; i++) { - entryp = &hw->msix_entries[i]; - entryp->vector = entries[i].vector; - } - /* Distribute vectors */ k = 0; - csio_set_nondata_intr_idx(hw, entries[k].entry); - csio_set_mb_intr_idx(csio_hw_to_mbm(hw), entries[k++].entry); - csio_set_fwevt_intr_idx(hw, entries[k++].entry); + csio_set_nondata_intr_idx(hw, k); + csio_set_mb_intr_idx(csio_hw_to_mbm(hw), k++); + csio_set_fwevt_intr_idx(hw, k++); for (i = 0; i < hw->num_pports; i++) { info = &hw->scsi_cpu_info[i]; for (j = 0; j < hw->num_scsi_msix_cpus; j++) { n = (j % info->max_cpus) + k; - hw->sqset[i][j].intr_idx = entries[n].entry; + hw->sqset[i][j].intr_idx = n; } k += info->max_cpus; } - kfree(entries); return 0; } @@ -597,22 +559,26 @@ csio_intr_disable(struct csio_hw *hw, bool free) { csio_hw_intr_disable(hw); - switch (hw->intr_mode) { - case CSIO_IM_MSIX: - csio_disable_msix(hw, free); - break; - case CSIO_IM_MSI: - if (free) - free_irq(hw->pdev->irq, hw); - pci_disable_msi(hw->pdev); - break; - case CSIO_IM_INTX: - if (free) - free_irq(hw->pdev->irq, hw); - break; - default: - break; + if (free) { + int i; + + switch (hw->intr_mode) { + case CSIO_IM_MSIX: + for (i = 0; i < hw->num_sqsets + CSIO_EXTRA_VECS; i++) { + free_irq(pci_irq_vector(hw->pdev, i), + hw->msix_entries[i].dev_id); + } + break; + case CSIO_IM_MSI: + case CSIO_IM_INTX: + free_irq(pci_irq_vector(hw->pdev, 0), hw); + break; + default: + break; + } } + + pci_free_irq_vectors(hw->pdev); hw->intr_mode = CSIO_IM_NONE; hw->flags &= ~CSIO_HWF_HOST_INTR_ENABLED; }