diff options
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/char/agp/amd-k7-agp.c | 24 | ||||
-rw-r--r-- | drivers/char/agp/amd64-agp.c | 6 | ||||
-rw-r--r-- | drivers/char/agp/ati-agp.c | 22 | ||||
-rw-r--r-- | drivers/char/agp/efficeon-agp.c | 16 | ||||
-rw-r--r-- | drivers/char/agp/intel-agp.c | 11 | ||||
-rw-r--r-- | drivers/char/agp/nvidia-agp.c | 24 | ||||
-rw-r--r-- | drivers/char/agp/sis-agp.c | 7 | ||||
-rw-r--r-- | drivers/char/agp/via-agp.c | 6 | ||||
-rw-r--r-- | drivers/pci/access.c | 8 | ||||
-rw-r--r-- | drivers/pci/doe.c | 20 | ||||
-rw-r--r-- | drivers/pci/hotplug/Kconfig | 3 | ||||
-rw-r--r-- | drivers/pci/hotplug/TODO | 3 | ||||
-rw-r--r-- | drivers/pci/hotplug/acpiphp_glue.c | 8 | ||||
-rw-r--r-- | drivers/pci/hotplug/pciehp_hpc.c | 4 | ||||
-rw-r--r-- | drivers/pci/hotplug/shpchp.h | 1 | ||||
-rw-r--r-- | drivers/pci/hotplug/shpchp_hpc.c | 18 | ||||
-rw-r--r-- | drivers/pci/irq.c | 2 | ||||
-rw-r--r-- | drivers/pci/pci-acpi.c | 2 | ||||
-rw-r--r-- | drivers/pci/pci-driver.c | 8 | ||||
-rw-r--r-- | drivers/pci/pci.c | 105 | ||||
-rw-r--r-- | drivers/pci/pci.h | 1 | ||||
-rw-r--r-- | drivers/pci/pcie/Kconfig | 8 | ||||
-rw-r--r-- | drivers/pci/pcie/portdrv.c | 2 | ||||
-rw-r--r-- | drivers/pci/probe.c | 10 | ||||
-rw-r--r-- | drivers/pci/remove.c | 6 |
25 files changed, 155 insertions, 170 deletions
diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c index 2b2095542816..55397ba765d2 100644 --- a/drivers/char/agp/amd-k7-agp.c +++ b/drivers/char/agp/amd-k7-agp.c @@ -488,26 +488,11 @@ static void agp_amdk7_remove(struct pci_dev *pdev) agp_put_bridge(bridge); } -#ifdef CONFIG_PM - -static int agp_amdk7_suspend(struct pci_dev *pdev, pm_message_t state) +static int agp_amdk7_resume(struct device *dev) { - pci_save_state(pdev); - pci_set_power_state(pdev, pci_choose_state(pdev, state)); - - return 0; -} - -static int agp_amdk7_resume(struct pci_dev *pdev) -{ - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - return amd_irongate_driver.configure(); } -#endif /* CONFIG_PM */ - /* must be the same order as name table above */ static const struct pci_device_id agp_amdk7_pci_table[] = { { @@ -539,15 +524,14 @@ static const struct pci_device_id agp_amdk7_pci_table[] = { MODULE_DEVICE_TABLE(pci, agp_amdk7_pci_table); +static DEFINE_SIMPLE_DEV_PM_OPS(agp_amdk7_pm_ops, NULL, agp_amdk7_resume); + static struct pci_driver agp_amdk7_pci_driver = { .name = "agpgart-amdk7", .id_table = agp_amdk7_pci_table, .probe = agp_amdk7_probe, .remove = agp_amdk7_remove, -#ifdef CONFIG_PM - .suspend = agp_amdk7_suspend, - .resume = agp_amdk7_resume, -#endif + .driver.pm = &agp_amdk7_pm_ops, }; static int __init agp_amdk7_init(void) diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c index 84a4aa9312cf..ce8651436609 100644 --- a/drivers/char/agp/amd64-agp.c +++ b/drivers/char/agp/amd64-agp.c @@ -588,9 +588,7 @@ static void agp_amd64_remove(struct pci_dev *pdev) agp_bridges_found--; } -#define agp_amd64_suspend NULL - -static int __maybe_unused agp_amd64_resume(struct device *dev) +static int agp_amd64_resume(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); @@ -727,7 +725,7 @@ static const struct pci_device_id agp_amd64_pci_promisc_table[] = { { } }; -static SIMPLE_DEV_PM_OPS(agp_amd64_pm_ops, agp_amd64_suspend, agp_amd64_resume); +static DEFINE_SIMPLE_DEV_PM_OPS(agp_amd64_pm_ops, NULL, agp_amd64_resume); static struct pci_driver agp_amd64_pci_driver = { .name = "agpgart-amd64", diff --git a/drivers/char/agp/ati-agp.c b/drivers/char/agp/ati-agp.c index 6f5530482d83..3c1fce48aabe 100644 --- a/drivers/char/agp/ati-agp.c +++ b/drivers/char/agp/ati-agp.c @@ -238,23 +238,10 @@ static int ati_configure(void) } -#ifdef CONFIG_PM -static int agp_ati_suspend(struct pci_dev *dev, pm_message_t state) +static int agp_ati_resume(struct device *dev) { - pci_save_state(dev); - pci_set_power_state(dev, PCI_D3hot); - - return 0; -} - -static int agp_ati_resume(struct pci_dev *dev) -{ - pci_set_power_state(dev, PCI_D0); - pci_restore_state(dev); - return ati_configure(); } -#endif /* *Since we don't need contiguous memory we just try @@ -559,15 +546,14 @@ static const struct pci_device_id agp_ati_pci_table[] = { MODULE_DEVICE_TABLE(pci, agp_ati_pci_table); +static DEFINE_SIMPLE_DEV_PM_OPS(agp_ati_pm_ops, NULL, agp_ati_resume); + static struct pci_driver agp_ati_pci_driver = { .name = "agpgart-ati", .id_table = agp_ati_pci_table, .probe = agp_ati_probe, .remove = agp_ati_remove, -#ifdef CONFIG_PM - .suspend = agp_ati_suspend, - .resume = agp_ati_resume, -#endif + .driver.pm = &agp_ati_pm_ops, }; static int __init agp_ati_init(void) diff --git a/drivers/char/agp/efficeon-agp.c b/drivers/char/agp/efficeon-agp.c index c53f0f9ef5b0..f28d42319269 100644 --- a/drivers/char/agp/efficeon-agp.c +++ b/drivers/char/agp/efficeon-agp.c @@ -412,18 +412,11 @@ static void agp_efficeon_remove(struct pci_dev *pdev) agp_put_bridge(bridge); } -#ifdef CONFIG_PM -static int agp_efficeon_suspend(struct pci_dev *dev, pm_message_t state) -{ - return 0; -} - -static int agp_efficeon_resume(struct pci_dev *pdev) +static int agp_efficeon_resume(struct device *dev) { printk(KERN_DEBUG PFX "agp_efficeon_resume()\n"); return efficeon_configure(); } -#endif static const struct pci_device_id agp_efficeon_pci_table[] = { { @@ -437,6 +430,8 @@ static const struct pci_device_id agp_efficeon_pci_table[] = { { } }; +static DEFINE_SIMPLE_DEV_PM_OPS(agp_efficeon_pm_ops, NULL, agp_efficeon_resume); + MODULE_DEVICE_TABLE(pci, agp_efficeon_pci_table); static struct pci_driver agp_efficeon_pci_driver = { @@ -444,10 +439,7 @@ static struct pci_driver agp_efficeon_pci_driver = { .id_table = agp_efficeon_pci_table, .probe = agp_efficeon_probe, .remove = agp_efficeon_remove, -#ifdef CONFIG_PM - .suspend = agp_efficeon_suspend, - .resume = agp_efficeon_resume, -#endif + .driver.pm = &agp_efficeon_pm_ops, }; static int __init agp_efficeon_init(void) diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c index 9e4f27a6cb5a..c518b3a9db04 100644 --- a/drivers/char/agp/intel-agp.c +++ b/drivers/char/agp/intel-agp.c @@ -817,16 +817,15 @@ static void agp_intel_remove(struct pci_dev *pdev) agp_put_bridge(bridge); } -#ifdef CONFIG_PM -static int agp_intel_resume(struct pci_dev *pdev) +static int agp_intel_resume(struct device *dev) { + struct pci_dev *pdev = to_pci_dev(dev); struct agp_bridge_data *bridge = pci_get_drvdata(pdev); bridge->driver->configure(); return 0; } -#endif static const struct pci_device_id agp_intel_pci_table[] = { #define ID(x) \ @@ -895,14 +894,14 @@ static const struct pci_device_id agp_intel_pci_table[] = { MODULE_DEVICE_TABLE(pci, agp_intel_pci_table); +static DEFINE_SIMPLE_DEV_PM_OPS(agp_intel_pm_ops, NULL, agp_intel_resume); + static struct pci_driver agp_intel_pci_driver = { .name = "agpgart-intel", .id_table = agp_intel_pci_table, .probe = agp_intel_probe, .remove = agp_intel_remove, -#ifdef CONFIG_PM - .resume = agp_intel_resume, -#endif + .driver.pm = &agp_intel_pm_ops, }; static int __init agp_intel_init(void) diff --git a/drivers/char/agp/nvidia-agp.c b/drivers/char/agp/nvidia-agp.c index 826dbd06f6bb..dbcbc06cc202 100644 --- a/drivers/char/agp/nvidia-agp.c +++ b/drivers/char/agp/nvidia-agp.c @@ -404,28 +404,13 @@ static void agp_nvidia_remove(struct pci_dev *pdev) agp_put_bridge(bridge); } -#ifdef CONFIG_PM -static int agp_nvidia_suspend(struct pci_dev *pdev, pm_message_t state) +static int agp_nvidia_resume(struct device *dev) { - pci_save_state(pdev); - pci_set_power_state(pdev, PCI_D3hot); - - return 0; -} - -static int agp_nvidia_resume(struct pci_dev *pdev) -{ - /* set power state 0 and restore PCI space */ - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - /* reconfigure AGP hardware again */ nvidia_configure(); return 0; } -#endif - static const struct pci_device_id agp_nvidia_pci_table[] = { { @@ -449,15 +434,14 @@ static const struct pci_device_id agp_nvidia_pci_table[] = { MODULE_DEVICE_TABLE(pci, agp_nvidia_pci_table); +static DEFINE_SIMPLE_DEV_PM_OPS(agp_nvidia_pm_ops, NULL, agp_nvidia_resume); + static struct pci_driver agp_nvidia_pci_driver = { .name = "agpgart-nvidia", .id_table = agp_nvidia_pci_table, .probe = agp_nvidia_probe, .remove = agp_nvidia_remove, -#ifdef CONFIG_PM - .suspend = agp_nvidia_suspend, - .resume = agp_nvidia_resume, -#endif + .driver.pm = &agp_nvidia_pm_ops, }; static int __init agp_nvidia_init(void) diff --git a/drivers/char/agp/sis-agp.c b/drivers/char/agp/sis-agp.c index f8a02f4bef1b..484bb101c53b 100644 --- a/drivers/char/agp/sis-agp.c +++ b/drivers/char/agp/sis-agp.c @@ -217,10 +217,7 @@ static void agp_sis_remove(struct pci_dev *pdev) agp_put_bridge(bridge); } -#define agp_sis_suspend NULL - -static int __maybe_unused agp_sis_resume( - __attribute__((unused)) struct device *dev) +static int agp_sis_resume(__attribute__((unused)) struct device *dev) { return sis_driver.configure(); } @@ -407,7 +404,7 @@ static const struct pci_device_id agp_sis_pci_table[] = { MODULE_DEVICE_TABLE(pci, agp_sis_pci_table); -static SIMPLE_DEV_PM_OPS(agp_sis_pm_ops, agp_sis_suspend, agp_sis_resume); +static DEFINE_SIMPLE_DEV_PM_OPS(agp_sis_pm_ops, NULL, agp_sis_resume); static struct pci_driver agp_sis_pci_driver = { .name = "agpgart-sis", diff --git a/drivers/char/agp/via-agp.c b/drivers/char/agp/via-agp.c index b2f484f527fb..bc5140af2dcb 100644 --- a/drivers/char/agp/via-agp.c +++ b/drivers/char/agp/via-agp.c @@ -489,9 +489,7 @@ static void agp_via_remove(struct pci_dev *pdev) agp_put_bridge(bridge); } -#define agp_via_suspend NULL - -static int __maybe_unused agp_via_resume(struct device *dev) +static int agp_via_resume(struct device *dev) { struct agp_bridge_data *bridge = dev_get_drvdata(dev); @@ -551,7 +549,7 @@ static const struct pci_device_id agp_via_pci_table[] = { MODULE_DEVICE_TABLE(pci, agp_via_pci_table); -static SIMPLE_DEV_PM_OPS(agp_via_pm_ops, agp_via_suspend, agp_via_resume); +static DEFINE_SIMPLE_DEV_PM_OPS(agp_via_pm_ops, NULL, agp_via_resume); static struct pci_driver agp_via_pci_driver = { .name = "agpgart-via", diff --git a/drivers/pci/access.c b/drivers/pci/access.c index 708c7529647f..3c230ca3de58 100644 --- a/drivers/pci/access.c +++ b/drivers/pci/access.c @@ -350,6 +350,11 @@ bool pcie_cap_has_lnkctl(const struct pci_dev *dev) type == PCI_EXP_TYPE_PCIE_BRIDGE; } +bool pcie_cap_has_lnkctl2(const struct pci_dev *dev) +{ + return pcie_cap_has_lnkctl(dev) && pcie_cap_version(dev) > 1; +} + static inline bool pcie_cap_has_sltctl(const struct pci_dev *dev) { return pcie_downstream_port(dev) && @@ -390,10 +395,11 @@ static bool pcie_capability_reg_implemented(struct pci_dev *dev, int pos) return pcie_cap_has_rtctl(dev); case PCI_EXP_DEVCAP2: case PCI_EXP_DEVCTL2: + return pcie_cap_version(dev) > 1; case PCI_EXP_LNKCAP2: case PCI_EXP_LNKCTL2: case PCI_EXP_LNKSTA2: - return pcie_cap_version(dev) > 1; + return pcie_cap_has_lnkctl2(dev); default: return false; } diff --git a/drivers/pci/doe.c b/drivers/pci/doe.c index e402f05068a5..66d9ab288646 100644 --- a/drivers/pci/doe.c +++ b/drivers/pci/doe.c @@ -29,6 +29,9 @@ #define PCI_DOE_FLAG_CANCEL 0 #define PCI_DOE_FLAG_DEAD 1 +/* Max data object length is 2^18 dwords */ +#define PCI_DOE_MAX_LENGTH (1 << 18) + /** * struct pci_doe_mb - State for a single DOE mailbox * @@ -107,6 +110,7 @@ static int pci_doe_send_req(struct pci_doe_mb *doe_mb, { struct pci_dev *pdev = doe_mb->pdev; int offset = doe_mb->cap_offset; + size_t length; u32 val; int i; @@ -123,15 +127,20 @@ static int pci_doe_send_req(struct pci_doe_mb *doe_mb, if (FIELD_GET(PCI_DOE_STATUS_ERROR, val)) return -EIO; + /* Length is 2 DW of header + length of payload in DW */ + length = 2 + task->request_pl_sz / sizeof(u32); + if (length > PCI_DOE_MAX_LENGTH) + return -EIO; + if (length == PCI_DOE_MAX_LENGTH) + length = 0; + /* Write DOE Header */ val = FIELD_PREP(PCI_DOE_DATA_OBJECT_HEADER_1_VID, task->prot.vid) | FIELD_PREP(PCI_DOE_DATA_OBJECT_HEADER_1_TYPE, task->prot.type); pci_write_config_dword(pdev, offset + PCI_DOE_WRITE, val); - /* Length is 2 DW of header + length of payload in DW */ pci_write_config_dword(pdev, offset + PCI_DOE_WRITE, FIELD_PREP(PCI_DOE_DATA_OBJECT_HEADER_2_LENGTH, - 2 + task->request_pl_sz / - sizeof(u32))); + length)); for (i = 0; i < task->request_pl_sz / sizeof(u32); i++) pci_write_config_dword(pdev, offset + PCI_DOE_WRITE, task->request_pl[i]); @@ -178,7 +187,10 @@ static int pci_doe_recv_resp(struct pci_doe_mb *doe_mb, struct pci_doe_task *tas pci_write_config_dword(pdev, offset + PCI_DOE_READ, 0); length = FIELD_GET(PCI_DOE_DATA_OBJECT_HEADER_2_LENGTH, val); - if (length > SZ_1M || length < 2) + /* A value of 0x0 indicates max data object length */ + if (!length) + length = PCI_DOE_MAX_LENGTH; + if (length < 2) return -EIO; /* First 2 dwords have already been read */ diff --git a/drivers/pci/hotplug/Kconfig b/drivers/pci/hotplug/Kconfig index 840a84bb5ee2..48113b210cf9 100644 --- a/drivers/pci/hotplug/Kconfig +++ b/drivers/pci/hotplug/Kconfig @@ -6,11 +6,14 @@ menuconfig HOTPLUG_PCI bool "Support for PCI Hotplug" depends on PCI && SYSFS + default y if USB4 help Say Y here if you have a motherboard with a PCI Hotplug controller. This allows you to add and remove PCI cards while the machine is powered up and running. + Thunderbolt/USB4 PCIe tunneling depends on native PCIe hotplug. + When in doubt, say N. if HOTPLUG_PCI diff --git a/drivers/pci/hotplug/TODO b/drivers/pci/hotplug/TODO index 88f217c82b4f..fdb8dd6ea24d 100644 --- a/drivers/pci/hotplug/TODO +++ b/drivers/pci/hotplug/TODO @@ -58,9 +58,6 @@ shpchp: pciehp with commit 82a9e79ef132 ("PCI: pciehp: remove hpc_ops"). Clarify if there was a specific reason not to apply the same change to shpchp. -* The ->get_mode1_ECC_cap callback in shpchp_hpc_ops is never invoked. - Why was it introduced? Can it be removed? - * The hardirq handler shpc_isr() queues events on a workqueue. It can be simplified by converting it to threaded IRQ handling. Use pciehp as a template. diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 6efa3d8db9a5..5b1f271c6034 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -411,6 +411,14 @@ static void check_hotplug_bridge(struct acpiphp_slot *slot, struct pci_dev *dev) if (dev->is_hotplug_bridge) return; + /* + * In the PCIe case, only Root Ports and Downstream Ports are capable of + * accommodating hotplug devices, so avoid marking Upstream Ports as + * "hotplug bridges". + */ + if (pci_is_pcie(dev) && pci_pcie_type(dev) == PCI_EXP_TYPE_UPSTREAM) + return; + list_for_each_entry(func, &slot->funcs, sibling) { if (PCI_FUNC(dev->devfn) == func->function) { dev->is_hotplug_bridge = 1; diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c index 040ae076ec0e..10e9670eea0b 100644 --- a/drivers/pci/hotplug/pciehp_hpc.c +++ b/drivers/pci/hotplug/pciehp_hpc.c @@ -811,7 +811,9 @@ static void pcie_enable_notification(struct controller *ctrl) else cmd |= PCI_EXP_SLTCTL_PDCE; if (!pciehp_poll_mode) - cmd |= PCI_EXP_SLTCTL_HPIE | PCI_EXP_SLTCTL_CCIE; + cmd |= PCI_EXP_SLTCTL_HPIE; + if (!pciehp_poll_mode && !NO_CMD_CMPL(ctrl)) + cmd |= PCI_EXP_SLTCTL_CCIE; mask = (PCI_EXP_SLTCTL_PDCE | PCI_EXP_SLTCTL_ABPE | PCI_EXP_SLTCTL_PFDE | diff --git a/drivers/pci/hotplug/shpchp.h b/drivers/pci/hotplug/shpchp.h index 6e85885b554c..3a97f455336e 100644 --- a/drivers/pci/hotplug/shpchp.h +++ b/drivers/pci/hotplug/shpchp.h @@ -311,7 +311,6 @@ struct hpc_ops { int (*get_latch_status)(struct slot *slot, u8 *status); int (*get_adapter_status)(struct slot *slot, u8 *status); int (*get_adapter_speed)(struct slot *slot, enum pci_bus_speed *speed); - int (*get_mode1_ECC_cap)(struct slot *slot, u8 *mode); int (*get_prog_int)(struct slot *slot, u8 *prog_int); int (*query_power_fault)(struct slot *slot); void (*green_led_on)(struct slot *slot); diff --git a/drivers/pci/hotplug/shpchp_hpc.c b/drivers/pci/hotplug/shpchp_hpc.c index bd7557ca4910..48e4daefc44a 100644 --- a/drivers/pci/hotplug/shpchp_hpc.c +++ b/drivers/pci/hotplug/shpchp_hpc.c @@ -489,23 +489,6 @@ static int hpc_get_adapter_speed(struct slot *slot, enum pci_bus_speed *value) return retval; } -static int hpc_get_mode1_ECC_cap(struct slot *slot, u8 *mode) -{ - int retval = 0; - struct controller *ctrl = slot->ctrl; - u16 sec_bus_status = shpc_readw(ctrl, SEC_BUS_CONFIG); - u8 pi = shpc_readb(ctrl, PROG_INTERFACE); - - if (pi == 2) { - *mode = (sec_bus_status & 0x0100) >> 8; - } else { - retval = -1; - } - - ctrl_dbg(ctrl, "Mode 1 ECC cap = %d\n", *mode); - return retval; -} - static int hpc_query_power_fault(struct slot *slot) { struct controller *ctrl = slot->ctrl; @@ -900,7 +883,6 @@ static const struct hpc_ops shpchp_hpc_ops = { .get_adapter_status = hpc_get_adapter_status, .get_adapter_speed = hpc_get_adapter_speed, - .get_mode1_ECC_cap = hpc_get_mode1_ECC_cap, .get_prog_int = hpc_get_prog_int, .query_power_fault = hpc_query_power_fault, diff --git a/drivers/pci/irq.c b/drivers/pci/irq.c index 12ecd0aaa28d..0050e8f6814e 100644 --- a/drivers/pci/irq.c +++ b/drivers/pci/irq.c @@ -44,6 +44,8 @@ int pci_request_irq(struct pci_dev *dev, unsigned int nr, irq_handler_t handler, va_start(ap, fmt); devname = kvasprintf(GFP_KERNEL, fmt, ap); va_end(ap); + if (!devname) + return -ENOMEM; ret = request_threaded_irq(pci_irq_vector(dev, nr), handler, thread_fn, irqflags, devname, dev_id); diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index a46fec776ad7..068d6745bf98 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -67,7 +67,7 @@ static acpi_status acpi_match_rc(acpi_handle handle, u32 lvl, void *context, unsigned long long uid; acpi_status status; - status = acpi_evaluate_integer(handle, "_UID", NULL, &uid); + status = acpi_evaluate_integer(handle, METHOD_NAME__UID, NULL, &uid); if (ACPI_FAILURE(status) || uid != *segment) return AE_CTRL_DEPTH; diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 107d77f3c846..a2ceeacc33eb 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -646,7 +646,7 @@ static int pci_legacy_suspend(struct device *dev, pm_message_t state) return 0; } -static int pci_legacy_suspend_late(struct device *dev, pm_message_t state) +static int pci_legacy_suspend_late(struct device *dev) { struct pci_dev *pci_dev = to_pci_dev(dev); @@ -848,7 +848,7 @@ static int pci_pm_suspend_noirq(struct device *dev) return 0; if (pci_has_legacy_pm_support(pci_dev)) - return pci_legacy_suspend_late(dev, PMSG_SUSPEND); + return pci_legacy_suspend_late(dev); if (!pm) { pci_save_state(pci_dev); @@ -1060,7 +1060,7 @@ static int pci_pm_freeze_noirq(struct device *dev) const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; if (pci_has_legacy_pm_support(pci_dev)) - return pci_legacy_suspend_late(dev, PMSG_FREEZE); + return pci_legacy_suspend_late(dev); if (pm && pm->freeze_noirq) { int error; @@ -1179,7 +1179,7 @@ static int pci_pm_poweroff_noirq(struct device *dev) return 0; if (pci_has_legacy_pm_support(pci_dev)) - return pci_legacy_suspend_late(dev, PMSG_HIBERNATE); + return pci_legacy_suspend_late(dev); if (!pm) { pci_fixup_device(pci_fixup_suspend_late, pci_dev); diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 2127aba3550b..fba95486caaf 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -6447,6 +6447,8 @@ bool pci_device_is_present(struct pci_dev *pdev) { u32 v; + /* Check PF if pdev is a VF, since VF Vendor/Device IDs are 0xffff */ + pdev = pci_physfn(pdev); if (pci_dev_is_disconnected(pdev)) return false; return pci_bus_read_dev_vendor_id(pdev->bus, pdev->devfn, &v, 0); @@ -6743,60 +6745,70 @@ static void pci_no_domains(void) } #ifdef CONFIG_PCI_DOMAINS_GENERIC -static atomic_t __domain_nr = ATOMIC_INIT(-1); +static DEFINE_IDA(pci_domain_nr_static_ida); +static DEFINE_IDA(pci_domain_nr_dynamic_ida); -static int pci_get_new_domain_nr(void) +static void of_pci_reserve_static_domain_nr(void) { - return atomic_inc_return(&__domain_nr); + struct device_node *np; + int domain_nr; + + for_each_node_by_type(np, "pci") { + domain_nr = of_get_pci_domain_nr(np); + if (domain_nr < 0) + continue; + /* + * Permanently allocate domain_nr in dynamic_ida + * to prevent it from dynamic allocation. + */ + ida_alloc_range(&pci_domain_nr_dynamic_ida, + domain_nr, domain_nr, GFP_KERNEL); + } } static int of_pci_bus_find_domain_nr(struct device *parent) { - static int use_dt_domains = -1; - int domain = -1; + static bool static_domains_reserved = false; + int domain_nr; - if (parent) - domain = of_get_pci_domain_nr(parent->of_node); + /* On the first call scan device tree for static allocations. */ + if (!static_domains_reserved) { + of_pci_reserve_static_domain_nr(); + static_domains_reserved = true; + } + + if (parent) { + /* + * If domain is in DT, allocate it in static IDA. This + * prevents duplicate static allocations in case of errors + * in DT. + */ + domain_nr = of_get_pci_domain_nr(parent->of_node); + if (domain_nr >= 0) + return ida_alloc_range(&pci_domain_nr_static_ida, + domain_nr, domain_nr, + GFP_KERNEL); + } /* - * Check DT domain and use_dt_domains values. - * - * If DT domain property is valid (domain >= 0) and - * use_dt_domains != 0, the DT assignment is valid since this means - * we have not previously allocated a domain number by using - * pci_get_new_domain_nr(); we should also update use_dt_domains to - * 1, to indicate that we have just assigned a domain number from - * DT. - * - * If DT domain property value is not valid (ie domain < 0), and we - * have not previously assigned a domain number from DT - * (use_dt_domains != 1) we should assign a domain number by - * using the: - * - * pci_get_new_domain_nr() - * - * API and update the use_dt_domains value to keep track of method we - * are using to assign domain numbers (use_dt_domains = 0). - * - * All other combinations imply we have a platform that is trying - * to mix domain numbers obtained from DT and pci_get_new_domain_nr(), - * which is a recipe for domain mishandling and it is prevented by - * invalidating the domain value (domain = -1) and printing a - * corresponding error. + * If domain was not specified in DT, choose a free ID from dynamic + * allocations. All domain numbers from DT are permanently in + * dynamic allocations to prevent assigning them to other DT nodes + * without static domain. */ - if (domain >= 0 && use_dt_domains) { - use_dt_domains = 1; - } else if (domain < 0 && use_dt_domains != 1) { - use_dt_domains = 0; - domain = pci_get_new_domain_nr(); - } else { - if (parent) - pr_err("Node %pOF has ", parent->of_node); - pr_err("Inconsistent \"linux,pci-domain\" property in DT\n"); - domain = -1; - } + return ida_alloc(&pci_domain_nr_dynamic_ida, GFP_KERNEL); +} - return domain; +static void of_pci_bus_release_domain_nr(struct pci_bus *bus, struct device *parent) +{ + if (bus->domain_nr < 0) + return; + + /* Release domain from IDA where it was allocated. */ + if (of_get_pci_domain_nr(parent->of_node) == bus->domain_nr) + ida_free(&pci_domain_nr_static_ida, bus->domain_nr); + else + ida_free(&pci_domain_nr_dynamic_ida, bus->domain_nr); } int pci_bus_find_domain_nr(struct pci_bus *bus, struct device *parent) @@ -6804,6 +6816,13 @@ int pci_bus_find_domain_nr(struct pci_bus *bus, struct device *parent) return acpi_disabled ? of_pci_bus_find_domain_nr(parent) : acpi_pci_bus_find_domain_nr(bus); } + +void pci_bus_release_domain_nr(struct pci_bus *bus, struct device *parent) +{ + if (!acpi_disabled) + return; + of_pci_bus_release_domain_nr(bus, parent); +} #endif /** diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index b1ebb7ab8805..9ed3b5550043 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -15,6 +15,7 @@ extern const unsigned char pcie_link_speed[]; extern bool pci_early_dump; bool pcie_cap_has_lnkctl(const struct pci_dev *dev); +bool pcie_cap_has_lnkctl2(const struct pci_dev *dev); bool pcie_cap_has_rtctl(const struct pci_dev *dev); /* Functions internal to the PCI core code */ diff --git a/drivers/pci/pcie/Kconfig b/drivers/pci/pcie/Kconfig index 788ac8df3f9d..228652a59f27 100644 --- a/drivers/pci/pcie/Kconfig +++ b/drivers/pci/pcie/Kconfig @@ -4,6 +4,7 @@ # config PCIEPORTBUS bool "PCI Express Port Bus support" + default y if USB4 help This enables PCI Express Port Bus support. Users can then enable support for Native Hot-Plug, Advanced Error Reporting, Power @@ -15,9 +16,12 @@ config PCIEPORTBUS config HOTPLUG_PCI_PCIE bool "PCI Express Hotplug driver" depends on HOTPLUG_PCI && PCIEPORTBUS + default y if USB4 help - Say Y here if you have a motherboard that supports PCI Express Native - Hotplug + Say Y here if you have a motherboard that supports PCIe native + hotplug. + + Thunderbolt/USB4 PCIe tunneling depends on native PCIe hotplug. When in doubt, say N. diff --git a/drivers/pci/pcie/portdrv.c b/drivers/pci/pcie/portdrv.c index 8b16e96ec15c..2cc2e60bcb39 100644 --- a/drivers/pci/pcie/portdrv.c +++ b/drivers/pci/pcie/portdrv.c @@ -220,6 +220,8 @@ static int get_port_device_capability(struct pci_dev *dev) int services = 0; if (dev->is_hotplug_bridge && + (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT || + pci_pcie_type(dev) == PCI_EXP_TYPE_DOWNSTREAM) && (pcie_ports_native || host->native_pcie_hotplug)) { services |= PCIE_PORT_SERVICE_HP; diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index b66fa42c4b1f..1e234189aff1 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -906,6 +906,10 @@ static int pci_register_host_bridge(struct pci_host_bridge *bridge) bus->domain_nr = pci_bus_find_domain_nr(bus, parent); else bus->domain_nr = bridge->domain_nr; + if (bus->domain_nr < 0) { + err = bus->domain_nr; + goto free; + } #endif b = pci_find_bus(pci_domain_nr(bus), bridge->busnr); @@ -1030,6 +1034,9 @@ unregister: device_del(&bridge->dev); free: +#ifdef CONFIG_PCI_DOMAINS_GENERIC + pci_bus_release_domain_nr(bus, parent); +#endif kfree(bus); return err; } @@ -1891,9 +1898,6 @@ int pci_setup_device(struct pci_dev *dev) dev->broken_intx_masking = pci_intx_mask_broken(dev); - /* Clear errors left from system firmware */ - pci_write_config_word(dev, PCI_STATUS, 0xffff); - switch (dev->hdr_type) { /* header type */ case PCI_HEADER_TYPE_NORMAL: /* standard header */ if (class == PCI_CLASS_BRIDGE_PCI) diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c index 4c54c75050dc..0145aef1b930 100644 --- a/drivers/pci/remove.c +++ b/drivers/pci/remove.c @@ -160,6 +160,12 @@ void pci_remove_root_bus(struct pci_bus *bus) pci_remove_bus(bus); host_bridge->bus = NULL; +#ifdef CONFIG_PCI_DOMAINS_GENERIC + /* Release domain_nr if it was dynamically allocated */ + if (host_bridge->domain_nr == PCI_DOMAIN_NR_NOT_SET) + pci_bus_release_domain_nr(bus, host_bridge->dev.parent); +#endif + /* remove the host bridge */ device_del(&host_bridge->dev); } |