diff options
Diffstat (limited to 'drivers/pci/pcie')
| -rw-r--r-- | drivers/pci/pcie/aer/aer_inject.c | 9 | ||||
| -rw-r--r-- | drivers/pci/pcie/aer/aerdrv_acpi.c | 56 | ||||
| -rw-r--r-- | drivers/pci/pcie/aer/aerdrv_core.c | 7 | ||||
| -rw-r--r-- | drivers/pci/pcie/aer/aerdrv_errprint.c | 101 | ||||
| -rw-r--r-- | drivers/pci/pcie/aspm.c | 14 | ||||
| -rw-r--r-- | drivers/pci/pcie/pme.c | 7 | ||||
| -rw-r--r-- | drivers/pci/pcie/portdrv.h | 2 | ||||
| -rw-r--r-- | drivers/pci/pcie/portdrv_bus.c | 4 | ||||
| -rw-r--r-- | drivers/pci/pcie/portdrv_core.c | 62 | ||||
| -rw-r--r-- | drivers/pci/pcie/portdrv_pci.c | 13 |
10 files changed, 134 insertions, 141 deletions
diff --git a/drivers/pci/pcie/aer/aer_inject.c b/drivers/pci/pcie/aer/aer_inject.c index 587e7e85310..182224acedb 100644 --- a/drivers/pci/pcie/aer/aer_inject.c +++ b/drivers/pci/pcie/aer/aer_inject.c @@ -397,16 +397,14 @@ static int aer_inject(struct aer_error_inj *einj) if (!aer_mask_override && einj->cor_status && !(einj->cor_status & ~cor_mask)) { ret = -EINVAL; - printk(KERN_WARNING "The correctable error(s) is masked " - "by device\n"); + printk(KERN_WARNING "The correctable error(s) is masked by device\n"); spin_unlock_irqrestore(&inject_lock, flags); goto out_put; } if (!aer_mask_override && einj->uncor_status && !(einj->uncor_status & ~uncor_mask)) { ret = -EINVAL; - printk(KERN_WARNING "The uncorrectable error(s) is masked " - "by device\n"); + printk(KERN_WARNING "The uncorrectable error(s) is masked by device\n"); spin_unlock_irqrestore(&inject_lock, flags); goto out_put; } @@ -464,8 +462,7 @@ static int aer_inject(struct aer_error_inj *einj) goto out_put; } aer_irq(-1, edev); - } - else + } else ret = -EINVAL; out_put: kfree(err_alloc); diff --git a/drivers/pci/pcie/aer/aerdrv_acpi.c b/drivers/pci/pcie/aer/aerdrv_acpi.c index cf611ab2193..01906576ab9 100644 --- a/drivers/pci/pcie/aer/aerdrv_acpi.c +++ b/drivers/pci/pcie/aer/aerdrv_acpi.c @@ -23,10 +23,10 @@ static inline int hest_match_pci(struct acpi_hest_aer_common *p, struct pci_dev *pci) { - return (0 == pci_domain_nr(pci->bus) && - p->bus == pci->bus->number && - p->device == PCI_SLOT(pci->devfn) && - p->function == PCI_FUNC(pci->devfn)); + return ACPI_HEST_SEGMENT(p->bus) == pci_domain_nr(pci->bus) && + ACPI_HEST_BUS(p->bus) == pci->bus->number && + p->device == PCI_SLOT(pci->devfn) && + p->function == PCI_FUNC(pci->devfn); } static inline bool hest_match_type(struct acpi_hest_header *hest_hdr, @@ -50,14 +50,37 @@ struct aer_hest_parse_info { int firmware_first; }; +static int hest_source_is_pcie_aer(struct acpi_hest_header *hest_hdr) +{ + if (hest_hdr->type == ACPI_HEST_TYPE_AER_ROOT_PORT || + hest_hdr->type == ACPI_HEST_TYPE_AER_ENDPOINT || + hest_hdr->type == ACPI_HEST_TYPE_AER_BRIDGE) + return 1; + return 0; +} + static int aer_hest_parse(struct acpi_hest_header *hest_hdr, void *data) { struct aer_hest_parse_info *info = data; struct acpi_hest_aer_common *p; int ff; + if (!hest_source_is_pcie_aer(hest_hdr)) + return 0; + p = (struct acpi_hest_aer_common *)(hest_hdr + 1); ff = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST); + + /* + * If no specific device is supplied, determine whether + * FIRMWARE_FIRST is set for *any* PCIe device. + */ + if (!info->pci_dev) { + info->firmware_first |= ff; + return 0; + } + + /* Otherwise, check the specific device */ if (p->flags & ACPI_HEST_GLOBAL) { if (hest_match_type(hest_hdr, info->pci_dev)) info->firmware_first = ff; @@ -97,33 +120,20 @@ int pcie_aer_get_firmware_first(struct pci_dev *dev) static bool aer_firmware_first; -static int aer_hest_parse_aff(struct acpi_hest_header *hest_hdr, void *data) -{ - struct acpi_hest_aer_common *p; - - if (aer_firmware_first) - return 0; - - switch (hest_hdr->type) { - case ACPI_HEST_TYPE_AER_ROOT_PORT: - case ACPI_HEST_TYPE_AER_ENDPOINT: - case ACPI_HEST_TYPE_AER_BRIDGE: - p = (struct acpi_hest_aer_common *)(hest_hdr + 1); - aer_firmware_first = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST); - default: - return 0; - } -} - /** * aer_acpi_firmware_first - Check if APEI should control AER. */ bool aer_acpi_firmware_first(void) { static bool parsed = false; + struct aer_hest_parse_info info = { + .pci_dev = NULL, /* Check all PCIe devices */ + .firmware_first = 0, + }; if (!parsed) { - apei_hest_parse(aer_hest_parse_aff, NULL); + apei_hest_parse(aer_hest_parse, &info); + aer_firmware_first = info.firmware_first; parsed = true; } return aer_firmware_first; diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c index 85ca36f2136..5653ea94547 100644 --- a/drivers/pci/pcie/aer/aerdrv_core.c +++ b/drivers/pci/pcie/aer/aerdrv_core.c @@ -525,7 +525,7 @@ static void handle_error_source(struct pcie_device *aerdev, if (info->severity == AER_CORRECTABLE) { /* - * Correctable error does not need software intevention. + * Correctable error does not need software intervention. * No need to go through error recovery process. */ pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR); @@ -542,8 +542,7 @@ static void aer_recover_work_func(struct work_struct *work); #define AER_RECOVER_RING_ORDER 4 #define AER_RECOVER_RING_SIZE (1 << AER_RECOVER_RING_ORDER) -struct aer_recover_entry -{ +struct aer_recover_entry { u8 bus; u8 devfn; u16 domain; @@ -574,7 +573,7 @@ void aer_recover_queue(int domain, unsigned int bus, unsigned int devfn, }; spin_lock_irqsave(&aer_recover_ring_lock, flags); - if (kfifo_put(&aer_recover_ring, &entry)) + if (kfifo_put(&aer_recover_ring, entry)) schedule_work(&aer_recover_work); else pr_err("AER recover: Buffer overflow when recovering AER for %04x:%02x:%02x:%x\n", diff --git a/drivers/pci/pcie/aer/aerdrv_errprint.c b/drivers/pci/pcie/aer/aerdrv_errprint.c index 2c7c9f5f592..36ed31b5219 100644 --- a/drivers/pci/pcie/aer/aerdrv_errprint.c +++ b/drivers/pci/pcie/aer/aerdrv_errprint.c @@ -124,6 +124,21 @@ static const char *aer_agent_string[] = { "Transmitter ID" }; +static void __print_tlp_header(struct pci_dev *dev, + struct aer_header_log_regs *t) +{ + unsigned char *tlp = (unsigned char *)&t; + + dev_err(&dev->dev, " TLP Header:" + " %02x%02x%02x%02x %02x%02x%02x%02x" + " %02x%02x%02x%02x %02x%02x%02x%02x\n", + *(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp, + *(tlp + 7), *(tlp + 6), *(tlp + 5), *(tlp + 4), + *(tlp + 11), *(tlp + 10), *(tlp + 9), + *(tlp + 8), *(tlp + 15), *(tlp + 14), + *(tlp + 13), *(tlp + 12)); +} + static void __aer_print_error(struct pci_dev *dev, struct aer_err_info *info) { @@ -153,48 +168,35 @@ static void __aer_print_error(struct pci_dev *dev, void aer_print_error(struct pci_dev *dev, struct aer_err_info *info) { + int layer, agent; int id = ((dev->bus->number << 8) | dev->devfn); - if (info->status == 0) { - dev_err(&dev->dev, - "PCIe Bus Error: severity=%s, type=Unaccessible, " - "id=%04x(Unregistered Agent ID)\n", + if (!info->status) { + dev_err(&dev->dev, "PCIe Bus Error: severity=%s, type=Unaccessible, id=%04x(Unregistered Agent ID)\n", aer_error_severity_string[info->severity], id); - } else { - int layer, agent; - - layer = AER_GET_LAYER_ERROR(info->severity, info->status); - agent = AER_GET_AGENT(info->severity, info->status); - - dev_err(&dev->dev, - "PCIe Bus Error: severity=%s, type=%s, id=%04x(%s)\n", - aer_error_severity_string[info->severity], - aer_error_layer[layer], id, aer_agent_string[agent]); - - dev_err(&dev->dev, - " device [%04x:%04x] error status/mask=%08x/%08x\n", - dev->vendor, dev->device, - info->status, info->mask); - - __aer_print_error(dev, info); - - if (info->tlp_header_valid) { - unsigned char *tlp = (unsigned char *) &info->tlp; - dev_err(&dev->dev, " TLP Header:" - " %02x%02x%02x%02x %02x%02x%02x%02x" - " %02x%02x%02x%02x %02x%02x%02x%02x\n", - *(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp, - *(tlp + 7), *(tlp + 6), *(tlp + 5), *(tlp + 4), - *(tlp + 11), *(tlp + 10), *(tlp + 9), - *(tlp + 8), *(tlp + 15), *(tlp + 14), - *(tlp + 13), *(tlp + 12)); - } + goto out; } + layer = AER_GET_LAYER_ERROR(info->severity, info->status); + agent = AER_GET_AGENT(info->severity, info->status); + + dev_err(&dev->dev, "PCIe Bus Error: severity=%s, type=%s, id=%04x(%s)\n", + aer_error_severity_string[info->severity], + aer_error_layer[layer], id, aer_agent_string[agent]); + + dev_err(&dev->dev, " device [%04x:%04x] error status/mask=%08x/%08x\n", + dev->vendor, dev->device, + info->status, info->mask); + + __aer_print_error(dev, info); + + if (info->tlp_header_valid) + __print_tlp_header(dev, &info->tlp); + +out: if (info->id && info->error_dev_num > 1 && info->id == id) - dev_err(&dev->dev, - " Error of this Agent(%04x) is reported first\n", - id); + dev_err(&dev->dev, " Error of this Agent(%04x) is reported first\n", id); + trace_aer_event(dev_name(&dev->dev), (info->status & ~info->mask), info->severity); } @@ -228,6 +230,7 @@ void cper_print_aer(struct pci_dev *dev, int cper_severity, const char **status_strs; aer_severity = cper_severity_to_aer(cper_severity); + if (aer_severity == AER_CORRECTABLE) { status = aer->cor_status; mask = aer->cor_mask; @@ -240,28 +243,22 @@ void cper_print_aer(struct pci_dev *dev, int cper_severity, status_strs_size = ARRAY_SIZE(aer_uncorrectable_error_string); tlp_header_valid = status & AER_LOG_TLP_MASKS; } + layer = AER_GET_LAYER_ERROR(aer_severity, status); agent = AER_GET_AGENT(aer_severity, status); - dev_err(&dev->dev, "aer_status: 0x%08x, aer_mask: 0x%08x\n", - status, mask); + + dev_err(&dev->dev, "aer_status: 0x%08x, aer_mask: 0x%08x\n", status, mask); cper_print_bits("", status, status_strs, status_strs_size); dev_err(&dev->dev, "aer_layer=%s, aer_agent=%s\n", - aer_error_layer[layer], aer_agent_string[agent]); + aer_error_layer[layer], aer_agent_string[agent]); + if (aer_severity != AER_CORRECTABLE) dev_err(&dev->dev, "aer_uncor_severity: 0x%08x\n", - aer->uncor_severity); - if (tlp_header_valid) { - const unsigned char *tlp; - tlp = (const unsigned char *)&aer->header_log; - dev_err(&dev->dev, "aer_tlp_header:" - " %02x%02x%02x%02x %02x%02x%02x%02x" - " %02x%02x%02x%02x %02x%02x%02x%02x\n", - *(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp, - *(tlp + 7), *(tlp + 6), *(tlp + 5), *(tlp + 4), - *(tlp + 11), *(tlp + 10), *(tlp + 9), - *(tlp + 8), *(tlp + 15), *(tlp + 14), - *(tlp + 13), *(tlp + 12)); - } + aer->uncor_severity); + + if (tlp_header_valid) + __print_tlp_header(dev, &aer->header_log); + trace_aer_event(dev_name(&dev->dev), (status & ~mask), aer_severity); } diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index 403a44374ed..e1e7026b838 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -548,7 +548,7 @@ static struct pcie_link_state *alloc_pcie_link_state(struct pci_dev *pdev) /* * pcie_aspm_init_link_state: Initiate PCI express link state. - * It is called after the pcie and its children devices are scaned. + * It is called after the pcie and its children devices are scanned. * @pdev: the root port or switch downstream port */ void pcie_aspm_init_link_state(struct pci_dev *pdev) @@ -984,18 +984,6 @@ void pcie_no_aspm(void) } } -/** - * pcie_aspm_enabled - is PCIe ASPM enabled? - * - * Returns true if ASPM has not been disabled by the command-line option - * pcie_aspm=off. - **/ -int pcie_aspm_enabled(void) -{ - return !aspm_disabled; -} -EXPORT_SYMBOL(pcie_aspm_enabled); - bool pcie_aspm_support_enabled(void) { return aspm_support_enabled; diff --git a/drivers/pci/pcie/pme.c b/drivers/pci/pcie/pme.c index e56e594ce11..82e06a86cd7 100644 --- a/drivers/pci/pcie/pme.c +++ b/drivers/pci/pcie/pme.c @@ -199,8 +199,7 @@ static void pcie_pme_handle_request(struct pci_dev *port, u16 req_id) * assuming that the PME was reported by a PCIe-PCI bridge that * used devfn different from zero. */ - dev_dbg(&port->dev, "PME interrupt generated for " - "non-existent device %02x:%02x.%d\n", + dev_dbg(&port->dev, "PME interrupt generated for non-existent device %02x:%02x.%d\n", busnr, PCI_SLOT(devfn), PCI_FUNC(devfn)); found = pcie_pme_from_pci_bridge(bus, 0); } @@ -419,8 +418,8 @@ static void pcie_pme_remove(struct pcie_device *srv) static struct pcie_port_service_driver pcie_pme_driver = { .name = "pcie_pme", - .port_type = PCI_EXP_TYPE_ROOT_PORT, - .service = PCIE_PORT_SERVICE_PME, + .port_type = PCI_EXP_TYPE_ROOT_PORT, + .service = PCIE_PORT_SERVICE_PME, .probe = pcie_pme_probe, .suspend = pcie_pme_suspend, diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h index d2eb80aab56..d525548404d 100644 --- a/drivers/pci/pcie/portdrv.h +++ b/drivers/pci/pcie/portdrv.h @@ -14,7 +14,7 @@ #define PCIE_PORT_DEVICE_MAXSERVICES 4 /* * According to the PCI Express Base Specification 2.0, the indices of - * the MSI-X table entires used by port services must not exceed 31 + * the MSI-X table entries used by port services must not exceed 31 */ #define PCIE_PORT_MAX_MSIX_ENTRIES 32 diff --git a/drivers/pci/pcie/portdrv_bus.c b/drivers/pci/pcie/portdrv_bus.c index 67be55a7f26..87e79a6ffb5 100644 --- a/drivers/pci/pcie/portdrv_bus.c +++ b/drivers/pci/pcie/portdrv_bus.c @@ -18,8 +18,8 @@ static int pcie_port_bus_match(struct device *dev, struct device_driver *drv); struct bus_type pcie_port_bus_type = { - .name = "pci_express", - .match = pcie_port_bus_match, + .name = "pci_express", + .match = pcie_port_bus_match, }; EXPORT_SYMBOL_GPL(pcie_port_bus_type); diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index 31063ac3099..2f0ce668a77 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -46,7 +46,7 @@ static void release_pcie_device(struct device *dev) * pcie_port_msix_add_entry - add entry to given array of MSI-X entries * @entries: Array of MSI-X entries * @new_entry: Index of the entry to add to the array - * @nr_entries: Number of entries aleady in the array + * @nr_entries: Number of entries already in the array * * Return value: Position of the added entry in the array */ @@ -79,9 +79,10 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask) u16 reg16; u32 reg32; - nr_entries = pci_msix_table_size(dev); - if (!nr_entries) - return -EINVAL; + nr_entries = pci_msix_vec_count(dev); + if (nr_entries < 0) + return nr_entries; + BUG_ON(!nr_entries); if (nr_entries > PCIE_PORT_MAX_MSIX_ENTRIES) nr_entries = PCIE_PORT_MAX_MSIX_ENTRIES; @@ -98,7 +99,7 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask) for (i = 0; i < nr_entries; i++) msix_entries[i].entry = i; - status = pci_enable_msix(dev, msix_entries, nr_entries); + status = pci_enable_msix_exact(dev, msix_entries, nr_entries); if (status) goto Exit; @@ -170,7 +171,7 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask) pci_disable_msix(dev); /* Now allocate the MSI-X vectors for real */ - status = pci_enable_msix(dev, msix_entries, nvec); + status = pci_enable_msix_exact(dev, msix_entries, nvec); if (status) goto Exit; } @@ -260,13 +261,14 @@ static int get_port_device_capability(struct pci_dev *dev) if (pcie_ports_disabled) return 0; - err = pcie_port_platform_notify(dev, &cap_mask); - if (!pcie_ports_auto) { - cap_mask = PCIE_PORT_SERVICE_PME | PCIE_PORT_SERVICE_HP - | PCIE_PORT_SERVICE_VC; - if (pci_aer_available()) - cap_mask |= PCIE_PORT_SERVICE_AER; - } else if (err) { + cap_mask = PCIE_PORT_SERVICE_PME | PCIE_PORT_SERVICE_HP + | PCIE_PORT_SERVICE_VC; + if (pci_aer_available()) + cap_mask |= PCIE_PORT_SERVICE_AER; + + if (pcie_ports_auto) { + err = pcie_port_platform_notify(dev, &cap_mask); + if (err) return 0; } @@ -343,11 +345,12 @@ static int pcie_device_init(struct pci_dev *pdev, int service, int irq) device_enable_async_suspend(device); retval = device_register(device); - if (retval) - kfree(pcie); - else - get_device(device); - return retval; + if (retval) { + put_device(device); + return retval; + } + + return 0; } /** @@ -376,10 +379,13 @@ int pcie_port_device_register(struct pci_dev *dev) /* * Initialize service irqs. Don't use service devices that * require interrupts if there is no way to generate them. + * However, some drivers may have a polling mode (e.g. pciehp_poll_mode) + * that can be used in the absence of irqs. Allow them to determine + * if that is to be used. */ status = init_service_irqs(dev, irqs, capabilities); if (status) { - capabilities &= PCIE_PORT_SERVICE_VC; + capabilities &= PCIE_PORT_SERVICE_VC | PCIE_PORT_SERVICE_HP; if (!capabilities) goto error_disable; } @@ -453,10 +459,8 @@ int pcie_port_device_resume(struct device *dev) static int remove_iter(struct device *dev, void *data) { - if (dev->bus == &pcie_port_bus_type) { - put_device(dev); + if (dev->bus == &pcie_port_bus_type) device_unregister(dev); - } return 0; } @@ -497,12 +501,12 @@ static int pcie_port_probe_service(struct device *dev) pciedev = to_pcie_device(dev); status = driver->probe(pciedev); - if (!status) { - dev_printk(KERN_DEBUG, dev, "service driver %s loaded\n", - driver->name); - get_device(dev); - } - return status; + if (status) + return status; + + dev_printk(KERN_DEBUG, dev, "service driver %s loaded\n", driver->name); + get_device(dev); + return 0; } /** @@ -553,7 +557,7 @@ int pcie_port_service_register(struct pcie_port_service_driver *new) if (pcie_ports_disabled) return -ENODEV; - new->driver.name = (char *)new->name; + new->driver.name = new->name; new->driver.bus = &pcie_port_bus_type; new->driver.probe = pcie_port_probe_service; new->driver.remove = pcie_port_remove_service; diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index 696caed5fdf..80887eaa066 100644 --- a/drivers/pci/pcie/portdrv_pci.c +++ b/drivers/pci/pcie/portdrv_pci.c @@ -204,8 +204,8 @@ static int pcie_portdrv_probe(struct pci_dev *dev, return -ENODEV; if (!dev->irq && dev->pin) { - dev_warn(&dev->dev, "device [%04x:%04x] has invalid IRQ; " - "check vendor BIOS\n", dev->vendor, dev->device); + dev_warn(&dev->dev, "device [%04x:%04x] has invalid IRQ; check vendor BIOS\n", + dev->vendor, dev->device); } status = pcie_port_device_register(dev); if (status) @@ -223,7 +223,6 @@ static int pcie_portdrv_probe(struct pci_dev *dev, static void pcie_portdrv_remove(struct pci_dev *dev) { pcie_port_device_remove(dev); - pci_disable_device(dev); } static int error_detected_iter(struct device *device, void *data) @@ -390,15 +389,15 @@ static struct pci_driver pcie_portdriver = { .probe = pcie_portdrv_probe, .remove = pcie_portdrv_remove, - .err_handler = &pcie_portdrv_err_handler, + .err_handler = &pcie_portdrv_err_handler, - .driver.pm = PCIE_PORTDRV_PM_OPS, + .driver.pm = PCIE_PORTDRV_PM_OPS, }; static int __init dmi_pcie_pme_disable_msi(const struct dmi_system_id *d) { pr_notice("%s detected: will not use MSI for PCIe PME signaling\n", - d->ident); + d->ident); pcie_pme_disable_msi(); return 0; } @@ -412,7 +411,7 @@ static struct dmi_system_id __initdata pcie_portdrv_dmi_table[] = { .ident = "MSI Wind U-100", .matches = { DMI_MATCH(DMI_SYS_VENDOR, - "MICRO-STAR INTERNATIONAL CO., LTD"), + "MICRO-STAR INTERNATIONAL CO., LTD"), DMI_MATCH(DMI_PRODUCT_NAME, "U-100"), }, }, |