diff options
| -rw-r--r-- | drivers/infiniband/hw/qib/qib.h | 8 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_iba6120.c | 6 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_iba7220.c | 7 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_iba7322.c | 48 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_pcie.c | 149 |
5 files changed, 98 insertions, 120 deletions
diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h index a3e21a25cea5..f9e1c69603a5 100644 --- a/drivers/infiniband/hw/qib/qib.h +++ b/drivers/infiniband/hw/qib/qib.h @@ -1,7 +1,7 @@ #ifndef _QIB_KERNEL_H #define _QIB_KERNEL_H /* - * Copyright (c) 2012, 2013 Intel Corporation. All rights reserved. + * Copyright (c) 2012 - 2017 Intel Corporation. All rights reserved. * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * @@ -443,7 +443,7 @@ struct qib_irq_notify; #endif struct qib_msix_entry { - struct msix_entry msix; + int irq; void *arg; #ifdef CONFIG_INFINIBAND_QIB_DCA int dca; @@ -1433,9 +1433,9 @@ int qib_pcie_init(struct pci_dev *, const struct pci_device_id *); int qib_pcie_ddinit(struct qib_devdata *, struct pci_dev *, const struct pci_device_id *); void qib_pcie_ddcleanup(struct qib_devdata *); -int qib_pcie_params(struct qib_devdata *, u32, u32 *, struct qib_msix_entry *); +int qib_pcie_params(struct qib_devdata *dd, u32 minw, u32 *nent); int qib_reinit_intr(struct qib_devdata *); -void qib_enable_intx(struct pci_dev *); +void qib_enable_intx(struct qib_devdata *dd); void qib_nomsi(struct qib_devdata *); void qib_nomsix(struct qib_devdata *); void qib_pcie_getcmd(struct qib_devdata *, u16 *, u8 *, u8 *); diff --git a/drivers/infiniband/hw/qib/qib_iba6120.c b/drivers/infiniband/hw/qib/qib_iba6120.c index e423b71e6ea0..46045fc28fa0 100644 --- a/drivers/infiniband/hw/qib/qib_iba6120.c +++ b/drivers/infiniband/hw/qib/qib_iba6120.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2013 Intel Corporation. All rights reserved. + * Copyright (c) 2013 - 2017 Intel Corporation. All rights reserved. * Copyright (c) 2006, 2007, 2008, 2009, 2010 QLogic Corporation. * All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. @@ -1838,7 +1838,7 @@ static int qib_6120_setup_reset(struct qib_devdata *dd) bail: if (ret) { - if (qib_pcie_params(dd, dd->lbus_width, NULL, NULL)) + if (qib_pcie_params(dd, dd->lbus_width, NULL)) qib_dev_err(dd, "Reset failed to setup PCIe or interrupts; continuing anyway\n"); /* clear the reset error, init error/hwerror mask */ @@ -3562,7 +3562,7 @@ struct qib_devdata *qib_init_iba6120_funcs(struct pci_dev *pdev, if (qib_mini_init) goto bail; - if (qib_pcie_params(dd, 8, NULL, NULL)) + if (qib_pcie_params(dd, 8, NULL)) qib_dev_err(dd, "Failed to setup PCIe or interrupts; continuing anyway\n"); dd->cspec->irq = pdev->irq; /* save IRQ */ diff --git a/drivers/infiniband/hw/qib/qib_iba7220.c b/drivers/infiniband/hw/qib/qib_iba7220.c index c3679c48e61c..49cd6e3beb72 100644 --- a/drivers/infiniband/hw/qib/qib_iba7220.c +++ b/drivers/infiniband/hw/qib/qib_iba7220.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2011 - 2017 Intel Corporation. All rights reserved. * Copyright (c) 2006, 2007, 2008, 2009, 2010 QLogic Corporation. * All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. @@ -2148,7 +2149,7 @@ static int qib_setup_7220_reset(struct qib_devdata *dd) bail: if (ret) { - if (qib_pcie_params(dd, dd->lbus_width, NULL, NULL)) + if (qib_pcie_params(dd, dd->lbus_width, NULL)) qib_dev_err(dd, "Reset failed to setup PCIe or interrupts; continuing anyway\n"); @@ -3309,7 +3310,7 @@ static int qib_7220_intr_fallback(struct qib_devdata *dd) qib_devinfo(dd->pcidev, "MSI interrupt not detected, trying INTx interrupts\n"); qib_7220_free_irq(dd); - qib_enable_intx(dd->pcidev); + qib_enable_intx(dd); /* * Some newer kernels require free_irq before disable_msi, * and irq can be changed during disable and INTx enable @@ -4619,7 +4620,7 @@ struct qib_devdata *qib_init_iba7220_funcs(struct pci_dev *pdev, minwidth = 8; /* x8 capable boards */ break; } - if (qib_pcie_params(dd, minwidth, NULL, NULL)) + if (qib_pcie_params(dd, minwidth, NULL)) qib_dev_err(dd, "Failed to setup PCIe or interrupts; continuing anyway\n"); diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c index bb2439fff8fa..2653064ce9e9 100644 --- a/drivers/infiniband/hw/qib/qib_iba7322.c +++ b/drivers/infiniband/hw/qib/qib_iba7322.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2012 Intel Corporation. All rights reserved. + * Copyright (c) 2012 - 2017 Intel Corporation. All rights reserved. * Copyright (c) 2008 - 2012 QLogic Corporation. All rights reserved. * * This software is available to you under a choice of one of two @@ -2841,10 +2841,10 @@ static void qib_7322_nomsix(struct qib_devdata *dd) reset_dca_notifier(dd, &dd->cspec->msix_entries[i]); #endif irq_set_affinity_hint( - dd->cspec->msix_entries[i].msix.vector, NULL); + dd->cspec->msix_entries[i].irq, NULL); free_cpumask_var(dd->cspec->msix_entries[i].mask); - free_irq(dd->cspec->msix_entries[i].msix.vector, - dd->cspec->msix_entries[i].arg); + free_irq(dd->cspec->msix_entries[i].irq, + dd->cspec->msix_entries[i].arg); } qib_nomsix(dd); } @@ -3336,9 +3336,9 @@ static void reset_dca_notifier(struct qib_devdata *dd, struct qib_msix_entry *m) qib_devinfo(dd->pcidev, "Disabling notifier on HCA %d irq %d\n", dd->unit, - m->msix.vector); + m->irq); irq_set_affinity_notifier( - m->msix.vector, + m->irq, NULL); m->notifier = NULL; } @@ -3354,7 +3354,7 @@ static void setup_dca_notifier(struct qib_devdata *dd, struct qib_msix_entry *m) int ret; m->notifier = n; - n->notify.irq = m->msix.vector; + n->notify.irq = m->irq; n->notify.notify = qib_irq_notifier_notify; n->notify.release = qib_irq_notifier_release; n->arg = m->arg; @@ -3500,10 +3500,21 @@ try_intx: - 1, QIB_DRV_NAME "%d (kctx)", dd->unit); } - ret = request_irq( - dd->cspec->msix_entries[msixnum].msix.vector, - handler, 0, dd->cspec->msix_entries[msixnum].name, - arg); + + dd->cspec->msix_entries[msixnum].irq = pci_irq_vector( + dd->pcidev, msixnum); + if (dd->cspec->msix_entries[msixnum].irq < 0) { + qib_dev_err(dd, + "Couldn't get MSIx irq (vec=%d): %d\n", + msixnum, + dd->cspec->msix_entries[msixnum].irq); + qib_7322_nomsix(dd); + goto try_intx; + } + ret = request_irq(dd->cspec->msix_entries[msixnum].irq, + handler, 0, + dd->cspec->msix_entries[msixnum].name, + arg); if (ret) { /* * Shouldn't happen since the enable said we could @@ -3512,7 +3523,7 @@ try_intx: qib_dev_err(dd, "Couldn't setup MSIx interrupt (vec=%d, irq=%d): %d\n", msixnum, - dd->cspec->msix_entries[msixnum].msix.vector, + dd->cspec->msix_entries[msixnum].irq, ret); qib_7322_nomsix(dd); goto try_intx; @@ -3548,7 +3559,7 @@ try_intx: dd->cspec->msix_entries[msixnum].mask); } irq_set_affinity_hint( - dd->cspec->msix_entries[msixnum].msix.vector, + dd->cspec->msix_entries[msixnum].irq, dd->cspec->msix_entries[msixnum].mask); } msixnum++; @@ -3744,7 +3755,6 @@ static int qib_do_7322_reset(struct qib_devdata *dd) if (msix_entries) { /* restore the MSIx vector address and data if saved above */ for (i = 0; i < msix_entries; i++) { - dd->cspec->msix_entries[i].msix.entry = i; if (!msix_vecsave || !msix_vecsave[2 * i]) continue; qib_write_kreg(dd, 2 * i + @@ -3762,8 +3772,7 @@ static int qib_do_7322_reset(struct qib_devdata *dd) write_7322_initregs(dd); if (qib_pcie_params(dd, dd->lbus_width, - &dd->cspec->num_msix_entries, - dd->cspec->msix_entries)) + &dd->cspec->num_msix_entries)) qib_dev_err(dd, "Reset failed to setup PCIe or interrupts; continuing anyway\n"); @@ -5195,7 +5204,7 @@ static int qib_7322_intr_fallback(struct qib_devdata *dd) qib_devinfo(dd->pcidev, "MSIx interrupt not detected, trying INTx interrupts\n"); qib_7322_nomsix(dd); - qib_enable_intx(dd->pcidev); + qib_enable_intx(dd); qib_setup_7322_interrupt(dd, 0); return 1; } @@ -7327,10 +7336,7 @@ struct qib_devdata *qib_init_iba7322_funcs(struct pci_dev *pdev, if (!dd->cspec->msix_entries) tabsize = 0; - for (i = 0; i < tabsize; i++) - dd->cspec->msix_entries[i].msix.entry = i; - - if (qib_pcie_params(dd, 8, &tabsize, dd->cspec->msix_entries)) + if (qib_pcie_params(dd, 8, &tabsize)) qib_dev_err(dd, "Failed to setup PCIe or interrupts; continuing anyway\n"); /* may be less than we wanted, if not enough available */ diff --git a/drivers/infiniband/hw/qib/qib_pcie.c b/drivers/infiniband/hw/qib/qib_pcie.c index c379b8342a09..d90403e31a9d 100644 --- a/drivers/infiniband/hw/qib/qib_pcie.c +++ b/drivers/infiniband/hw/qib/qib_pcie.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2010 - 2017 Intel Corporation. All rights reserved. * Copyright (c) 2008, 2009 QLogic Corporation. All rights reserved. * * This software is available to you under a choice of one of two @@ -187,112 +188,84 @@ void qib_pcie_ddcleanup(struct qib_devdata *dd) pci_set_drvdata(dd->pcidev, NULL); } -static void qib_msix_setup(struct qib_devdata *dd, int pos, u32 *msixcnt, - struct qib_msix_entry *qib_msix_entry) -{ - int ret; - int nvec = *msixcnt; - struct msix_entry *msix_entry; - int i; - - ret = pci_msix_vec_count(dd->pcidev); - if (ret < 0) - goto do_intx; - - nvec = min(nvec, ret); - - /* We can't pass qib_msix_entry array to qib_msix_setup - * so use a dummy msix_entry array and copy the allocated - * irq back to the qib_msix_entry array. */ - msix_entry = kcalloc(nvec, sizeof(*msix_entry), GFP_KERNEL); - if (!msix_entry) - goto do_intx; - - for (i = 0; i < nvec; i++) - msix_entry[i] = qib_msix_entry[i].msix; - - ret = pci_enable_msix_range(dd->pcidev, msix_entry, 1, nvec); - if (ret < 0) - goto free_msix_entry; - else - nvec = ret; - - for (i = 0; i < nvec; i++) - qib_msix_entry[i].msix = msix_entry[i]; - - kfree(msix_entry); - *msixcnt = nvec; - return; - -free_msix_entry: - kfree(msix_entry); - -do_intx: - qib_dev_err( - dd, - "pci_enable_msix_range %d vectors failed: %d, falling back to INTx\n", - nvec, ret); - *msixcnt = 0; - qib_enable_intx(dd->pcidev); -} - /** * We save the msi lo and hi values, so we can restore them after * chip reset (the kernel PCI infrastructure doesn't yet handle that * correctly. */ -static int qib_msi_setup(struct qib_devdata *dd, int pos) +static void qib_msi_setup(struct qib_devdata *dd, int pos) { struct pci_dev *pdev = dd->pcidev; u16 control; - int ret; - ret = pci_enable_msi(pdev); - if (ret) - qib_dev_err(dd, - "pci_enable_msi failed: %d, interrupts may not work\n", - ret); - /* continue even if it fails, we may still be OK... */ - - pci_read_config_dword(pdev, pos + PCI_MSI_ADDRESS_LO, - &dd->msi_lo); - pci_read_config_dword(pdev, pos + PCI_MSI_ADDRESS_HI, - &dd->msi_hi); + pci_read_config_dword(pdev, pos + PCI_MSI_ADDRESS_LO, &dd->msi_lo); + pci_read_config_dword(pdev, pos + PCI_MSI_ADDRESS_HI, &dd->msi_hi); pci_read_config_word(pdev, pos + PCI_MSI_FLAGS, &control); + /* now save the data (vector) info */ - pci_read_config_word(pdev, pos + ((control & PCI_MSI_FLAGS_64BIT) - ? 12 : 8), + pci_read_config_word(pdev, + pos + ((control & PCI_MSI_FLAGS_64BIT) ? 12 : 8), &dd->msi_data); - return ret; } -int qib_pcie_params(struct qib_devdata *dd, u32 minw, u32 *nent, - struct qib_msix_entry *entry) +static int qib_allocate_irqs(struct qib_devdata *dd, u32 maxvec) +{ + unsigned int flags = PCI_IRQ_LEGACY; + + /* Check our capabilities */ + if (dd->pcidev->msix_cap) { + flags |= PCI_IRQ_MSIX; + } else { + if (dd->pcidev->msi_cap) { + flags |= PCI_IRQ_MSI; + /* Get msi_lo and msi_hi */ + qib_msi_setup(dd, dd->pcidev->msi_cap); + } + } + + if (!(flags & (PCI_IRQ_MSIX | PCI_IRQ_MSI))) + qib_dev_err(dd, "No PCI MSI or MSIx capability!\n"); + + return pci_alloc_irq_vectors(dd->pcidev, 1, maxvec, flags); +} + +int qib_pcie_params(struct qib_devdata *dd, u32 minw, u32 *nent) { u16 linkstat, speed; - int pos = 0, ret = 1; + int nvec; + int maxvec; + int ret = 0; if (!pci_is_pcie(dd->pcidev)) { qib_dev_err(dd, "Can't find PCI Express capability!\n"); /* set up something... */ dd->lbus_width = 1; dd->lbus_speed = 2500; /* Gen1, 2.5GHz */ + ret = -1; goto bail; } - pos = dd->pcidev->msix_cap; - if (nent && *nent && pos) { - qib_msix_setup(dd, pos, nent, entry); - ret = 0; /* did it, either MSIx or INTx */ - } else { - pos = dd->pcidev->msi_cap; - if (pos) - ret = qib_msi_setup(dd, pos); - else - qib_dev_err(dd, "No PCI MSI or MSIx capability!\n"); + maxvec = (nent && *nent) ? *nent : 1; + nvec = qib_allocate_irqs(dd, maxvec); + if (nvec < 0) { + ret = nvec; + goto bail; + } + + /* + * If nent exists, make sure to record how many vectors were allocated + */ + if (nent) { + *nent = nvec; + + /* + * If we requested (nent) MSIX, but msix_enabled is not set, + * pci_alloc_irq_vectors() enabled INTx. + */ + if (!dd->pcidev->msix_enabled) + qib_dev_err(dd, + "no msix vectors allocated, using INTx\n"); } - if (!pos) - qib_enable_intx(dd->pcidev); pcie_capability_read_word(dd->pcidev, PCI_EXP_LNKSTA, &linkstat); /* @@ -379,7 +352,7 @@ int qib_reinit_intr(struct qib_devdata *dd) ret = 1; bail: if (!ret && (dd->flags & QIB_HAS_INTX)) { - qib_enable_intx(dd->pcidev); + qib_enable_intx(dd); ret = 1; } @@ -397,7 +370,7 @@ bail: void qib_nomsi(struct qib_devdata *dd) { dd->msi_lo = 0; - pci_disable_msi(dd->pcidev); + pci_free_irq_vectors(dd->pcidev); } /* @@ -405,23 +378,21 @@ void qib_nomsi(struct qib_devdata *dd) */ void qib_nomsix(struct qib_devdata *dd) { - pci_disable_msix(dd->pcidev); + pci_free_irq_vectors(dd->pcidev); } /* * Similar to pci_intx(pdev, 1), except that we make sure * msi(x) is off. */ -void qib_enable_intx(struct pci_dev *pdev) +void qib_enable_intx(struct qib_devdata *dd) { u16 cw, new; int pos; + struct pci_dev *pdev = dd->pcidev; - /* first, turn on INTx */ - pci_read_config_word(pdev, PCI_COMMAND, &cw); - new = cw & ~PCI_COMMAND_INTX_DISABLE; - if (new != cw) - pci_write_config_word(pdev, PCI_COMMAND, new); + if (pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_LEGACY) < 0) + qib_dev_err(dd, "Failed to enable INTx\n"); pos = pdev->msi_cap; if (pos) { |
