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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-03 16:31:35 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-03 16:31:35 -0700 |
commit | 862f0012549110d6f2586bf54b52ed4540cbff3a (patch) | |
tree | 83d29a684b885b1f58af76e0cd29b8552fd480ea /drivers/pci | |
parent | f991fae5c6d42dfc5029150b05a78cf3f6c18cc9 (diff) | |
parent | a0f75f9d495b3905b4c658c1d813a127f558a350 (diff) | |
download | linux-stable-862f0012549110d6f2586bf54b52ed4540cbff3a.tar.gz linux-stable-862f0012549110d6f2586bf54b52ed4540cbff3a.tar.bz2 linux-stable-862f0012549110d6f2586bf54b52ed4540cbff3a.zip |
Merge tag 'pci-v3.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI changes from Bjorn Helgaas:
"PCI device hotplug
- Add pci_alloc_dev() interface (Gu Zheng)
- Add pci_bus_get()/put() for reference counting (Jiang Liu)
- Fix SR-IOV reference count issues (Jiang Liu)
- Remove unused acpi_pci_roots list (Jiang Liu)
MSI
- Conserve interrupt resources on x86 (Alexander Gordeev)
AER
- Force fatal severity when component has been reset (Betty Dall)
- Reset link below Root Port as well as Downstream Port (Betty Dall)
- Fix "Firmware first" flag setting (Bjorn Helgaas)
- Don't parse HEST for non-PCIe devices (Bjorn Helgaas)
ASPM
- Warn when we can't disable ASPM as driver requests (Bjorn Helgaas)
Miscellaneous
- Add CircuitCo PCI IDs (Darren Hart)
- Add AMD CZ SATA and SMBus PCI IDs (Shane Huang)
- Work around Ivytown NTB BAR size issue (Jon Mason)
- Detect invalid initial BAR values (Kevin Hao)
- Add pcibios_release_device() (Sebastian Ott)
- Fix powerpc & sparc PCI_UNKNOWN power state usage (Bjorn Helgaas)"
* tag 'pci-v3.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (51 commits)
MAINTAINERS: Add ACPI folks for ACPI-related things under drivers/pci
PCI: Add CircuitCo vendor ID and subsystem ID
PCI: Use pdev->pm_cap instead of pci_find_capability(..,PCI_CAP_ID_PM)
PCI: Return early on allocation failures to unindent mainline code
PCI: Simplify IOV implementation and fix reference count races
PCI: Drop redundant setting of bus->is_added in virtfn_add_bus()
unicore32/PCI: Remove redundant call of pci_bus_add_devices()
m68k/PCI: Remove redundant call of pci_bus_add_devices()
PCI / ACPI / PM: Use correct power state strings in messages
PCI: Fix comment typo for pcie_pme_remove()
PCI: Rename pci_release_bus_bridge_dev() to pci_release_host_bridge_dev()
PCI: Fix refcount issue in pci_create_root_bus() error recovery path
ia64/PCI: Clean up pci_scan_root_bus() usage
PCI/AER: Reset link for devices below Root Port or Downstream Port
ACPI / APEI: Force fatal AER severity when component has been reset
PCI/AER: Remove "extern" from function declarations
PCI/AER: Move AER severity defines to aer.h
PCI/AER: Set dev->__aer_firmware_first only for matching devices
PCI/AER: Factor out HEST device type matching
PCI/AER: Don't parse HEST table for non-PCIe devices
...
Diffstat (limited to 'drivers/pci')
-rw-r--r-- | drivers/pci/bus.c | 15 | ||||
-rw-r--r-- | drivers/pci/ioapic.c | 13 | ||||
-rw-r--r-- | drivers/pci/iov.c | 65 | ||||
-rw-r--r-- | drivers/pci/msi.c | 10 | ||||
-rw-r--r-- | drivers/pci/pci-acpi.c | 10 | ||||
-rw-r--r-- | drivers/pci/pci-sysfs.c | 48 | ||||
-rw-r--r-- | drivers/pci/pci.c | 4 | ||||
-rw-r--r-- | drivers/pci/pcie/aer/aerdrv.h | 4 | ||||
-rw-r--r-- | drivers/pci/pcie/aer/aerdrv_acpi.c | 47 | ||||
-rw-r--r-- | drivers/pci/pcie/aer/aerdrv_core.c | 17 | ||||
-rw-r--r-- | drivers/pci/pcie/aspm.c | 29 | ||||
-rw-r--r-- | drivers/pci/pcie/pme.c | 2 | ||||
-rw-r--r-- | drivers/pci/probe.c | 114 | ||||
-rw-r--r-- | drivers/pci/quirks.c | 33 |
14 files changed, 252 insertions, 159 deletions
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index 32e66a6f12d9..b1ff02ab4f13 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -283,6 +283,21 @@ void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), } EXPORT_SYMBOL_GPL(pci_walk_bus); +struct pci_bus *pci_bus_get(struct pci_bus *bus) +{ + if (bus) + get_device(&bus->dev); + return bus; +} +EXPORT_SYMBOL(pci_bus_get); + +void pci_bus_put(struct pci_bus *bus) +{ + if (bus) + put_device(&bus->dev); +} +EXPORT_SYMBOL(pci_bus_put); + EXPORT_SYMBOL(pci_bus_alloc_resource); EXPORT_SYMBOL_GPL(pci_bus_add_device); EXPORT_SYMBOL(pci_bus_add_devices); diff --git a/drivers/pci/ioapic.c b/drivers/pci/ioapic.c index 3c6bbdd059a4..1b90579b233a 100644 --- a/drivers/pci/ioapic.c +++ b/drivers/pci/ioapic.c @@ -113,17 +113,6 @@ static struct pci_driver ioapic_driver = { .remove = ioapic_remove, }; -static int __init ioapic_init(void) -{ - return pci_register_driver(&ioapic_driver); -} - -static void __exit ioapic_exit(void) -{ - pci_unregister_driver(&ioapic_driver); -} - -module_init(ioapic_init); -module_exit(ioapic_exit); +module_pci_driver(ioapic_driver); MODULE_LICENSE("GPL"); diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index c93071d428f5..de8ffacf9c9b 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -47,51 +47,43 @@ static struct pci_bus *virtfn_add_bus(struct pci_bus *bus, int busnr) return NULL; pci_bus_insert_busn_res(child, busnr, busnr); - bus->is_added = 1; return child; } -static void virtfn_remove_bus(struct pci_bus *bus, int busnr) +static void virtfn_remove_bus(struct pci_bus *physbus, struct pci_bus *virtbus) { - struct pci_bus *child; - - if (bus->number == busnr) - return; - - child = pci_find_bus(pci_domain_nr(bus), busnr); - BUG_ON(!child); - - if (list_empty(&child->devices)) - pci_remove_bus(child); + if (physbus != virtbus && list_empty(&virtbus->devices)) + pci_remove_bus(virtbus); } static int virtfn_add(struct pci_dev *dev, int id, int reset) { int i; - int rc; + int rc = -ENOMEM; u64 size; char buf[VIRTFN_ID_LEN]; struct pci_dev *virtfn; struct resource *res; struct pci_sriov *iov = dev->sriov; + struct pci_bus *bus; - virtfn = alloc_pci_dev(); + mutex_lock(&iov->dev->sriov->lock); + bus = virtfn_add_bus(dev->bus, virtfn_bus(dev, id)); + if (!bus) + goto failed; + + virtfn = pci_alloc_dev(bus); if (!virtfn) - return -ENOMEM; + goto failed0; - mutex_lock(&iov->dev->sriov->lock); - virtfn->bus = virtfn_add_bus(dev->bus, virtfn_bus(dev, id)); - if (!virtfn->bus) { - kfree(virtfn); - mutex_unlock(&iov->dev->sriov->lock); - return -ENOMEM; - } virtfn->devfn = virtfn_devfn(dev, id); virtfn->vendor = dev->vendor; pci_read_config_word(dev, iov->pos + PCI_SRIOV_VF_DID, &virtfn->device); pci_setup_device(virtfn); virtfn->dev.parent = dev->dev.parent; + virtfn->physfn = pci_dev_get(dev); + virtfn->is_virtfn = 1; for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) { res = dev->resource + PCI_IOV_RESOURCES + i; @@ -113,9 +105,6 @@ static int virtfn_add(struct pci_dev *dev, int id, int reset) pci_device_add(virtfn, virtfn->bus); mutex_unlock(&iov->dev->sriov->lock); - virtfn->physfn = pci_dev_get(dev); - virtfn->is_virtfn = 1; - rc = pci_bus_add_device(virtfn); sprintf(buf, "virtfn%u", id); rc = sysfs_create_link(&dev->dev.kobj, &virtfn->dev.kobj, buf); @@ -135,7 +124,9 @@ failed1: pci_dev_put(dev); mutex_lock(&iov->dev->sriov->lock); pci_stop_and_remove_bus_device(virtfn); - virtfn_remove_bus(dev->bus, virtfn_bus(dev, id)); +failed0: + virtfn_remove_bus(dev->bus, bus); +failed: mutex_unlock(&iov->dev->sriov->lock); return rc; @@ -144,20 +135,15 @@ failed1: static void virtfn_remove(struct pci_dev *dev, int id, int reset) { char buf[VIRTFN_ID_LEN]; - struct pci_bus *bus; struct pci_dev *virtfn; struct pci_sriov *iov = dev->sriov; - bus = pci_find_bus(pci_domain_nr(dev->bus), virtfn_bus(dev, id)); - if (!bus) - return; - - virtfn = pci_get_slot(bus, virtfn_devfn(dev, id)); + virtfn = pci_get_domain_bus_and_slot(pci_domain_nr(dev->bus), + virtfn_bus(dev, id), + virtfn_devfn(dev, id)); if (!virtfn) return; - pci_dev_put(virtfn); - if (reset) { device_release_driver(&virtfn->dev); __pci_reset_function(virtfn); @@ -175,9 +161,11 @@ static void virtfn_remove(struct pci_dev *dev, int id, int reset) mutex_lock(&iov->dev->sriov->lock); pci_stop_and_remove_bus_device(virtfn); - virtfn_remove_bus(dev->bus, virtfn_bus(dev, id)); + virtfn_remove_bus(dev->bus, virtfn->bus); mutex_unlock(&iov->dev->sriov->lock); + /* balance pci_get_domain_bus_and_slot() */ + pci_dev_put(virtfn); pci_dev_put(dev); } @@ -334,13 +322,14 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn) if (!pdev) return -ENODEV; - pci_dev_put(pdev); - - if (!pdev->is_physfn) + if (!pdev->is_physfn) { + pci_dev_put(pdev); return -ENODEV; + } rc = sysfs_create_link(&dev->dev.kobj, &pdev->dev.kobj, "dep_link"); + pci_dev_put(pdev); if (rc) return rc; } diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 2c1075213bec..aca7578b05e5 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -81,7 +81,10 @@ void default_teardown_msi_irqs(struct pci_dev *dev) int i, nvec; if (entry->irq == 0) continue; - nvec = 1 << entry->msi_attrib.multiple; + if (entry->nvec_used) + nvec = entry->nvec_used; + else + nvec = 1 << entry->msi_attrib.multiple; for (i = 0; i < nvec; i++) arch_teardown_msi_irq(entry->irq + i); } @@ -336,7 +339,10 @@ static void free_msi_irqs(struct pci_dev *dev) int i, nvec; if (!entry->irq) continue; - nvec = 1 << entry->msi_attrib.multiple; + if (entry->nvec_used) + nvec = entry->nvec_used; + else + nvec = 1 << entry->msi_attrib.multiple; #ifdef CONFIG_GENERIC_HARDIRQS for (i = 0; i < nvec; i++) BUG_ON(irq_has_action(entry->irq + i)); diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index e4b1fb2c0f5d..dbdc5f7e2b29 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -186,8 +186,8 @@ static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state) [PCI_D0] = ACPI_STATE_D0, [PCI_D1] = ACPI_STATE_D1, [PCI_D2] = ACPI_STATE_D2, - [PCI_D3hot] = ACPI_STATE_D3, - [PCI_D3cold] = ACPI_STATE_D3 + [PCI_D3hot] = ACPI_STATE_D3_COLD, + [PCI_D3cold] = ACPI_STATE_D3_COLD, }; int error = -EINVAL; @@ -211,7 +211,7 @@ static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state) if (!error) dev_info(&dev->dev, "power state changed by ACPI to %s\n", - pci_power_name(state)); + acpi_power_state_string(state_conv[state])); return error; } @@ -376,12 +376,12 @@ static int __init acpi_pci_init(void) int ret; if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_MSI) { - printk(KERN_INFO"ACPI FADT declares the system doesn't support MSI, so disable it\n"); + pr_info("ACPI FADT declares the system doesn't support MSI, so disable it\n"); pci_no_msi(); } if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_ASPM) { - printk(KERN_INFO"ACPI FADT declares the system doesn't support PCIe ASPM, so disable it\n"); + pr_info("ACPI FADT declares the system doesn't support PCIe ASPM, so disable it\n"); pcie_no_aspm(); } diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index 5b4a9d9cd200..c0dbe1f61362 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -66,7 +66,7 @@ static ssize_t broken_parity_status_store(struct device *dev, struct pci_dev *pdev = to_pci_dev(dev); unsigned long val; - if (strict_strtoul(buf, 0, &val) < 0) + if (kstrtoul(buf, 0, &val) < 0) return -EINVAL; pdev->broken_parity_status = !!val; @@ -188,7 +188,7 @@ static ssize_t is_enabled_store(struct device *dev, { struct pci_dev *pdev = to_pci_dev(dev); unsigned long val; - ssize_t result = strict_strtoul(buf, 0, &val); + ssize_t result = kstrtoul(buf, 0, &val); if (result < 0) return result; @@ -259,7 +259,7 @@ msi_bus_store(struct device *dev, struct device_attribute *attr, struct pci_dev *pdev = to_pci_dev(dev); unsigned long val; - if (strict_strtoul(buf, 0, &val) < 0) + if (kstrtoul(buf, 0, &val) < 0) return -EINVAL; /* bad things may happen if the no_msi flag is changed @@ -291,7 +291,7 @@ static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf, unsigned long val; struct pci_bus *b = NULL; - if (strict_strtoul(buf, 0, &val) < 0) + if (kstrtoul(buf, 0, &val) < 0) return -EINVAL; if (val) { @@ -315,7 +315,7 @@ dev_rescan_store(struct device *dev, struct device_attribute *attr, unsigned long val; struct pci_dev *pdev = to_pci_dev(dev); - if (strict_strtoul(buf, 0, &val) < 0) + if (kstrtoul(buf, 0, &val) < 0) return -EINVAL; if (val) { @@ -325,6 +325,8 @@ dev_rescan_store(struct device *dev, struct device_attribute *attr, } return count; } +struct device_attribute dev_rescan_attr = __ATTR(rescan, (S_IWUSR|S_IWGRP), + NULL, dev_rescan_store); static void remove_callback(struct device *dev) { @@ -342,7 +344,7 @@ remove_store(struct device *dev, struct device_attribute *dummy, int ret = 0; unsigned long val; - if (strict_strtoul(buf, 0, &val) < 0) + if (kstrtoul(buf, 0, &val) < 0) return -EINVAL; /* An attribute cannot be unregistered by one of its own methods, @@ -354,6 +356,8 @@ remove_store(struct device *dev, struct device_attribute *dummy, count = ret; return count; } +struct device_attribute dev_remove_attr = __ATTR(remove, (S_IWUSR|S_IWGRP), + NULL, remove_store); static ssize_t dev_bus_rescan_store(struct device *dev, struct device_attribute *attr, @@ -362,7 +366,7 @@ dev_bus_rescan_store(struct device *dev, struct device_attribute *attr, unsigned long val; struct pci_bus *bus = to_pci_bus(dev); - if (strict_strtoul(buf, 0, &val) < 0) + if (kstrtoul(buf, 0, &val) < 0) return -EINVAL; if (val) { @@ -384,7 +388,7 @@ static ssize_t d3cold_allowed_store(struct device *dev, struct pci_dev *pdev = to_pci_dev(dev); unsigned long val; - if (strict_strtoul(buf, 0, &val) < 0) + if (kstrtoul(buf, 0, &val) < 0) return -EINVAL; pdev->d3cold_allowed = !!val; @@ -504,8 +508,6 @@ struct device_attribute pci_dev_attrs[] = { __ATTR(broken_parity_status,(S_IRUGO|S_IWUSR), broken_parity_status_show,broken_parity_status_store), __ATTR(msi_bus, 0644, msi_bus_show, msi_bus_store), - __ATTR(remove, (S_IWUSR|S_IWGRP), NULL, remove_store), - __ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, dev_rescan_store), #if defined(CONFIG_PM_RUNTIME) && defined(CONFIG_ACPI) __ATTR(d3cold_allowed, 0644, d3cold_allowed_show, d3cold_allowed_store), #endif @@ -1236,7 +1238,7 @@ static ssize_t reset_store(struct device *dev, { struct pci_dev *pdev = to_pci_dev(dev); unsigned long val; - ssize_t result = strict_strtoul(buf, 0, &val); + ssize_t result = kstrtoul(buf, 0, &val); if (result < 0) return result; @@ -1463,6 +1465,29 @@ static umode_t pci_dev_attrs_are_visible(struct kobject *kobj, return a->mode; } +static struct attribute *pci_dev_hp_attrs[] = { + &dev_remove_attr.attr, + &dev_rescan_attr.attr, + NULL, +}; + +static umode_t pci_dev_hp_attrs_are_visible(struct kobject *kobj, + struct attribute *a, int n) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct pci_dev *pdev = to_pci_dev(dev); + + if (pdev->is_virtfn) + return 0; + + return a->mode; +} + +static struct attribute_group pci_dev_hp_attr_group = { + .attrs = pci_dev_hp_attrs, + .is_visible = pci_dev_hp_attrs_are_visible, +}; + #ifdef CONFIG_PCI_IOV static struct attribute *sriov_dev_attrs[] = { &sriov_totalvfs_attr.attr, @@ -1494,6 +1519,7 @@ static struct attribute_group pci_dev_attr_group = { static const struct attribute_group *pci_dev_attr_groups[] = { &pci_dev_attr_group, + &pci_dev_hp_attr_group, #ifdef CONFIG_PCI_IOV &sriov_dev_attr_group, #endif diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 95057a925d80..e37fea6e178d 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -805,7 +805,7 @@ pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state) { pci_power_t ret; - if (!pci_find_capability(dev, PCI_CAP_ID_PM)) + if (!dev->pm_cap) return PCI_D0; ret = platform_pci_choose_state(dev); @@ -2431,7 +2431,7 @@ bool pci_acs_path_enabled(struct pci_dev *start, /** * pci_swizzle_interrupt_pin - swizzle INTx for device behind bridge * @dev: the PCI device - * @pin: the INTx pin (1=INTA, 2=INTB, 3=INTD, 4=INTD) + * @pin: the INTx pin (1=INTA, 2=INTB, 3=INTC, 4=INTD) * * Perform INTx swizzling for a device behind one level of bridge. This is * required by section 9.1 of the PCI-to-PCI bridge specification for devices diff --git a/drivers/pci/pcie/aer/aerdrv.h b/drivers/pci/pcie/aer/aerdrv.h index d12c77cd6991..90ea3e88041f 100644 --- a/drivers/pci/pcie/aer/aerdrv.h +++ b/drivers/pci/pcie/aer/aerdrv.h @@ -13,10 +13,6 @@ #include <linux/aer.h> #include <linux/interrupt.h> -#define AER_NONFATAL 0 -#define AER_FATAL 1 -#define AER_CORRECTABLE 2 - #define SYSTEM_ERROR_INTR_ON_MESG_MASK (PCI_EXP_RTCTL_SECEE| \ PCI_EXP_RTCTL_SENFEE| \ PCI_EXP_RTCTL_SEFEE) diff --git a/drivers/pci/pcie/aer/aerdrv_acpi.c b/drivers/pci/pcie/aer/aerdrv_acpi.c index 5194a7d41730..cf611ab2193a 100644 --- a/drivers/pci/pcie/aer/aerdrv_acpi.c +++ b/drivers/pci/pcie/aer/aerdrv_acpi.c @@ -29,6 +29,22 @@ static inline int hest_match_pci(struct acpi_hest_aer_common *p, p->function == PCI_FUNC(pci->devfn)); } +static inline bool hest_match_type(struct acpi_hest_header *hest_hdr, + struct pci_dev *dev) +{ + u16 hest_type = hest_hdr->type; + u8 pcie_type = pci_pcie_type(dev); + + if ((hest_type == ACPI_HEST_TYPE_AER_ROOT_PORT && + pcie_type == PCI_EXP_TYPE_ROOT_PORT) || + (hest_type == ACPI_HEST_TYPE_AER_ENDPOINT && + pcie_type == PCI_EXP_TYPE_ENDPOINT) || + (hest_type == ACPI_HEST_TYPE_AER_BRIDGE && + (dev->class >> 16) == PCI_BASE_CLASS_BRIDGE)) + return true; + return false; +} + struct aer_hest_parse_info { struct pci_dev *pci_dev; int firmware_first; @@ -38,34 +54,16 @@ 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; - u8 pcie_type = 0; - u8 bridge = 0; - int ff = 0; - - switch (hest_hdr->type) { - case ACPI_HEST_TYPE_AER_ROOT_PORT: - pcie_type = PCI_EXP_TYPE_ROOT_PORT; - break; - case ACPI_HEST_TYPE_AER_ENDPOINT: - pcie_type = PCI_EXP_TYPE_ENDPOINT; - break; - case ACPI_HEST_TYPE_AER_BRIDGE: - if ((info->pci_dev->class >> 16) == PCI_BASE_CLASS_BRIDGE) - bridge = 1; - break; - default: - return 0; - } + int ff; p = (struct acpi_hest_aer_common *)(hest_hdr + 1); + ff = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST); if (p->flags & ACPI_HEST_GLOBAL) { - if ((pci_is_pcie(info->pci_dev) && - pci_pcie_type(info->pci_dev) == pcie_type) || bridge) - ff = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST); + if (hest_match_type(hest_hdr, info->pci_dev)) + info->firmware_first = ff; } else if (hest_match_pci(p, info->pci_dev)) - ff = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST); - info->firmware_first = ff; + info->firmware_first = ff; return 0; } @@ -89,6 +87,9 @@ static void aer_set_firmware_first(struct pci_dev *pci_dev) int pcie_aer_get_firmware_first(struct pci_dev *dev) { + if (!pci_is_pcie(dev)) + return 0; + if (!dev->__aer_firmware_first_valid) aer_set_firmware_first(dev); return dev->__aer_firmware_first; diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c index 0f4554e48cc5..8b68ae59b7b6 100644 --- a/drivers/pci/pcie/aer/aerdrv_core.c +++ b/drivers/pci/pcie/aer/aerdrv_core.c @@ -400,16 +400,16 @@ void aer_do_secondary_bus_reset(struct pci_dev *dev) } /** - * default_downstream_reset_link - default reset function for Downstream Port - * @dev: pointer to downstream port's pci_dev data structure + * default_reset_link - default reset function + * @dev: pointer to pci_dev data structure * - * Invoked when performing link reset at Downstream Port w/ no aer driver. + * Invoked when performing link reset on a Downstream Port or a + * Root Port with no aer driver. */ -static pci_ers_result_t default_downstream_reset_link(struct pci_dev *dev) +static pci_ers_result_t default_reset_link(struct pci_dev *dev) { aer_do_secondary_bus_reset(dev); - dev_printk(KERN_DEBUG, &dev->dev, - "Downstream Port link has been reset\n"); + dev_printk(KERN_DEBUG, &dev->dev, "downstream link has been reset\n"); return PCI_ERS_RESULT_RECOVERED; } @@ -458,8 +458,9 @@ static pci_ers_result_t reset_link(struct pci_dev *dev) if (driver && driver->reset_link) { status = driver->reset_link(udev); - } else if (pci_pcie_type(udev) == PCI_EXP_TYPE_DOWNSTREAM) { - status = default_downstream_reset_link(udev); + } else if (pci_pcie_type(udev) == PCI_EXP_TYPE_DOWNSTREAM || + pci_pcie_type(udev) == PCI_EXP_TYPE_ROOT_PORT) { + status = default_reset_link(udev); } else { dev_printk(KERN_DEBUG, &dev->dev, "no link-reset support at upstream device %s\n", diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index d320df6375a2..403a44374ed5 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -714,19 +714,12 @@ void pcie_aspm_powersave_config_link(struct pci_dev *pdev) up_read(&pci_bus_sem); } -/* - * pci_disable_link_state - disable pci device's link state, so the link will - * never enter specific states - */ static void __pci_disable_link_state(struct pci_dev *pdev, int state, bool sem, bool force) { struct pci_dev *parent = pdev->bus->self; struct pcie_link_state *link; - if (aspm_disabled && !force) - return; - if (!pci_is_pcie(pdev)) return; @@ -736,6 +729,19 @@ static void __pci_disable_link_state(struct pci_dev *pdev, int state, bool sem, if (!parent || !parent->link_state) return; + /* + * A driver requested that ASPM be disabled on this device, but + * if we don't have permission to manage ASPM (e.g., on ACPI + * systems we have to observe the FADT ACPI_FADT_NO_ASPM bit and + * the _OSC method), we can't honor that request. Windows has + * a similar mechanism using "PciASPMOptOut", which is also + * ignored in this situation. + */ + if (aspm_disabled && !force) { + dev_warn(&pdev->dev, "can't disable ASPM; OS doesn't have ASPM control\n"); + return; + } + if (sem) down_read(&pci_bus_sem); mutex_lock(&aspm_lock); @@ -761,6 +767,15 @@ void pci_disable_link_state_locked(struct pci_dev *pdev, int state) } EXPORT_SYMBOL(pci_disable_link_state_locked); +/** + * pci_disable_link_state - Disable device's link state, so the link will + * never enter specific states. Note that if the BIOS didn't grant ASPM + * control to the OS, this does nothing because we can't touch the LNKCTL + * register. + * + * @pdev: PCI device + * @state: ASPM link state to disable + */ void pci_disable_link_state(struct pci_dev *pdev, int state) { __pci_disable_link_state(pdev, state, true, false); diff --git a/drivers/pci/pcie/pme.c b/drivers/pci/pcie/pme.c index 795db1f9d50c..e56e594ce112 100644 --- a/drivers/pci/pcie/pme.c +++ b/drivers/pci/pcie/pme.c @@ -408,7 +408,7 @@ static int pcie_pme_resume(struct pcie_device *srv) /** * pcie_pme_remove - Prepare PCIe PME service device for removal. - * @srv - PCIe service device to resume. + * @srv - PCIe service device to remove. */ static void pcie_pme_remove(struct pcie_device *srv) { diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 58cc0a8a0979..46ada5c098eb 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -170,7 +170,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, { u32 l, sz, mask; u16 orig_cmd; - struct pci_bus_region region; + struct pci_bus_region region, inverted_region; bool bar_too_big = false, bar_disabled = false; mask = type ? PCI_ROM_ADDRESS_MASK : ~0; @@ -250,12 +250,10 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, pci_write_config_dword(dev, pos + 4, 0); region.start = 0; region.end = sz64; - pcibios_bus_to_resource(dev, res, ®ion); bar_disabled = true; } else { region.start = l64; region.end = l64 + sz64; - pcibios_bus_to_resource(dev, res, ®ion); } } else { sz = pci_size(l, sz, mask); @@ -265,7 +263,28 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, region.start = l; region.end = l + sz; - pcibios_bus_to_resource(dev, res, ®ion); + } + + pcibios_bus_to_resource(dev, res, ®ion); + pcibios_resource_to_bus(dev, &inverted_region, res); + + /* + * If "A" is a BAR value (a bus address), "bus_to_resource(A)" is + * the corresponding resource address (the physical address used by + * the CPU. Converting that resource address back to a bus address + * should yield the original BAR value: + * + * resource_to_bus(bus_to_resource(A)) == A + * + * If it doesn't, CPU accesses to "bus_to_resource(A)" will not + * be claimed by the device. + */ + if (inverted_region.start != region.start) { + dev_info(&dev->dev, "reg 0x%x: initial BAR value %pa invalid; forcing reassignment\n", + pos, ®ion.start); + res->flags |= IORESOURCE_UNSET; + res->end -= res->start; + res->start = 0; } goto out; @@ -278,9 +297,9 @@ out: pci_write_config_word(dev, PCI_COMMAND, orig_cmd); if (bar_too_big) - dev_err(&dev->dev, "reg %x: can't handle 64-bit BAR\n", pos); + dev_err(&dev->dev, "reg 0x%x: can't handle 64-bit BAR\n", pos); if (res->flags && !bar_disabled) - dev_printk(KERN_DEBUG, &dev->dev, "reg %x: %pR\n", pos, res); + dev_printk(KERN_DEBUG, &dev->dev, "reg 0x%x: %pR\n", pos, res); return (res->flags & IORESOURCE_MEM_64) ? 1 : 0; } @@ -451,33 +470,46 @@ void pci_read_bridge_bases(struct pci_bus *child) } } -static struct pci_bus * pci_alloc_bus(void) +static struct pci_bus *pci_alloc_bus(void) { struct pci_bus *b; b = kzalloc(sizeof(*b), GFP_KERNEL); - if (b) { - INIT_LIST_HEAD(&b->node); - INIT_LIST_HEAD(&b->children); - INIT_LIST_HEAD(&b->devices); - INIT_LIST_HEAD(&b->slots); - INIT_LIST_HEAD(&b->resources); - b->max_bus_speed = PCI_SPEED_UNKNOWN; - b->cur_bus_speed = PCI_SPEED_UNKNOWN; - } + if (!b) + return NULL; + + INIT_LIST_HEAD(&b->node); + INIT_LIST_HEAD(&b->children); + INIT_LIST_HEAD(&b->devices); + INIT_LIST_HEAD(&b->slots); + INIT_LIST_HEAD(&b->resources); + b->max_bus_speed = PCI_SPEED_UNKNOWN; + b->cur_bus_speed = PCI_SPEED_UNKNOWN; return b; } +static void pci_release_host_bridge_dev(struct device *dev) +{ + struct pci_host_bridge *bridge = to_pci_host_bridge(dev); + + if (bridge->release_fn) + bridge->release_fn(bridge); + + pci_free_resource_list(&bridge->windows); + + kfree(bridge); +} + static struct pci_host_bridge *pci_alloc_host_bridge(struct pci_bus *b) { struct pci_host_bridge *bridge; bridge = kzalloc(sizeof(*bridge), GFP_KERNEL); - if (bridge) { - INIT_LIST_HEAD(&bridge->windows); - bridge->bus = b; - } + if (!bridge) + return NULL; + INIT_LIST_HEAD(&bridge->windows); + bridge->bus = b; return bridge; } @@ -1133,6 +1165,7 @@ static void pci_release_dev(struct device *dev) pci_release_capabilities(pci_dev); pci_release_of_node(pci_dev); pcibios_release_device(pci_dev); + pci_bus_put(pci_dev->bus); kfree(pci_dev); } @@ -1189,19 +1222,7 @@ int pci_cfg_space_size(struct pci_dev *dev) return PCI_CFG_SPACE_SIZE; } -static void pci_release_bus_bridge_dev(struct device *dev) -{ - struct pci_host_bridge *bridge = to_pci_host_bridge(dev); - - if (bridge->release_fn) - bridge->release_fn(bridge); - - pci_free_resource_list(&bridge->windows); - - kfree(bridge); -} - -struct pci_dev *alloc_pci_dev(void) +struct pci_dev *pci_alloc_dev(struct pci_bus *bus) { struct pci_dev *dev; @@ -1211,9 +1232,16 @@ struct pci_dev *alloc_pci_dev(void) INIT_LIST_HEAD(&dev->bus_list); dev->dev.type = &pci_dev_type; + dev->bus = pci_bus_get(bus); return dev; } +EXPORT_SYMBOL(pci_alloc_dev); + +struct pci_dev *alloc_pci_dev(void) +{ + return pci_alloc_dev(NULL); +} EXPORT_SYMBOL(alloc_pci_dev); bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *l, @@ -1264,11 +1292,10 @@ static struct pci_dev *pci_scan_device(struct pci_bus *bus, int devfn) if (!pci_bus_read_dev_vendor_id(bus, devfn, &l, 60*1000)) return NULL; - dev = alloc_pci_dev(); + dev = pci_alloc_dev(bus); if (!dev) return NULL; - dev->bus = bus; dev->devfn = devfn; dev->vendor = l & 0xffff; dev->device = (l >> 16) & 0xffff; @@ -1276,6 +1303,7 @@ static struct pci_dev *pci_scan_device(struct pci_bus *bus, int devfn) pci_set_of_node(dev); if (pci_setup_device(dev)) { + pci_bus_put(dev->bus); kfree(dev); return NULL; } @@ -1701,15 +1729,19 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus, goto err_out; bridge->dev.parent = parent; - bridge->dev.release = pci_release_bus_bridge_dev; + bridge->dev.release = pci_release_host_bridge_dev; dev_set_name(&bridge->dev, "pci%04x:%02x", pci_domain_nr(b), bus); error = pcibios_root_bridge_prepare(bridge); - if (error) - goto bridge_dev_reg_err; + if (error) { + kfree(bridge); + goto err_out; + } error = device_register(&bridge->dev); - if (error) - goto bridge_dev_reg_err; + if (error) { + put_device(&bridge->dev); + goto err_out; + } b->bridge = get_device(&bridge->dev); device_enable_async_suspend(b->bridge); pci_set_bus_of_node(b); @@ -1765,8 +1797,6 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus, class_dev_reg_err: put_device(&bridge->dev); device_unregister(&bridge->dev); -bridge_dev_reg_err: - kfree(bridge); err_out: kfree(b); return NULL; diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 7d68aeebf56b..e85d23044ae0 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -1022,6 +1022,8 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode); +DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode); /* * Serverworks CSB5 IDE does not fully support native mode @@ -1832,7 +1834,6 @@ static void quirk_e100_interrupt(struct pci_dev *dev) u16 command, pmcsr; u8 __iomem *csr; u8 cmd_hi; - int pm; switch (dev->device) { /* PCI IDs taken from drivers/net/e100.c */ @@ -1870,9 +1871,8 @@ static void quirk_e100_interrupt(struct pci_dev *dev) * Check that the device is in the D0 power state. If it's not, * there is no point to look any further. */ - pm = pci_find_capability(dev, PCI_CAP_ID_PM); - if (pm) { - pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr); + if (dev->pm_cap) { + pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr); if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0) return; } @@ -2865,6 +2865,31 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f9, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65fa, quirk_intel_mc_errata); +/* + * Ivytown NTB BAR sizes are misreported by the hardware due to an erratum. To + * work around this, query the size it should be configured to by the device and + * modify the resource end to correspond to this new size. + */ +static void quirk_intel_ntb(struct pci_dev *dev) +{ + int rc; + u8 val; + + rc = pci_read_config_byte(dev, 0x00D0, &val); + if (rc) + return; + + dev->resource[2].end = dev->resource[2].start + ((u64) 1 << val) - 1; + + rc = pci_read_config_byte(dev, 0x00D1, &val); + if (rc) + return; + + dev->resource[4].end = dev->resource[4].start + ((u64) 1 << val) - 1; +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e08, quirk_intel_ntb); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e0d, quirk_intel_ntb); + static ktime_t fixup_debug_start(struct pci_dev *dev, void (*fn)(struct pci_dev *dev)) { |