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* ACPI: Eliminate the DEVICE_ACPI_HANDLE() macroRafael J. Wysocki2013-11-141-2/+2
| | | | | | | | | Since DEVICE_ACPI_HANDLE() is now literally identical to ACPI_HANDLE(), replace it with the latter everywhere and drop its definition from include/acpi.h. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ACPI / PCI: Make bus registration and unregistration symmetricRafael J. Wysocki2013-07-231-6/+4Star
| | | | | | | | | | | | | | | Since acpi_pci_slot_enumerate() and acpiphp_enumerate_slots() can get the ACPI device handle they need from bus->bridge, it is not necessary to pass that handle to them as an argument. Drop the second argument of acpi_pci_slot_enumerate() and acpiphp_enumerate_slots(), rework them to obtain the ACPI handle from bus->bridge and make acpi_pci_add_bus() and acpi_pci_remove_bus() entirely symmetrical. Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Yinghai Lu <yinghai@kernel.org>
* PCI: acpiphp: Re-enumerate devices when host bridge receives Bus CheckYinghai Lu2013-05-171-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When a PCI host bridge device receives a Bus Check notification, we must re-enumerate starting with the bridge to discover changes (devices that have been added or removed). Prior to 668192b678 ("PCI: acpiphp: Move host bridge hotplug to pci_root.c"), this happened in _handle_hotplug_event_bridge(). After that commit, _handle_hotplug_event_bridge() is not installed for host bridges, and the host bridge notify handler, _handle_hotplug_event_root() did not re-enumerate. This patch adds re-enumeration to _handle_hotplug_event_root(). This fixes cases where we don't notice the addition or removal of PCI devices, e.g., the PCI-to-USB ExpressCard in the bugzilla below. [bhelgaas: changelog, references] Reference: https://lkml.kernel.org/r/CAAh6nkmbKR3HTqm5ommevsBwhL_u0N8Rk7Wsms_LfP=nBgKNew@mail.gmail.com Reference: https://bugzilla.kernel.org/show_bug.cgi?id=57961 Reported-by: Gavin Guo <tuffkidtt@gmail.com> Tested-by: Gavin Guo <tuffkidtt@gmail.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Jiang Liu <jiang.liu@huawei.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> CC: stable@vger.kernel.org # v3.9+
* PCI: acpiphp: Do not use ACPI PCI subdriver mechanismJiang Liu2013-04-131-0/+11
| | | | | | | | | | | | | | | | | | | | | | | Previously the acpiphp driver registered itself as an ACPI PCI subdriver, so its callbacks were invoked when creating/destroying PCI root buses to manage ACPI-based PCI hotplug slots. But it doesn't handle P2P bridge hotplug events, so it will cause strange behaviour if there are hotplug slots associated with a hot-removed P2P bridge. This patch fixes this issue by: 1) Directly hooking into PCI core to update hotplug slot devices when creating/destroying PCI buses through: pci_{add|remove}_bus() -> acpi_pci_{add|remove}_bus() 2) Getting rid of unused ACPI PCI subdriver-related code It also cleans up unused code in the acpiphp driver. [bhelgaas: keep acpi_pci_add_bus() stub for CONFIG_ACPI=n] Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Yinghai Lu <yinghai@kernel.org> Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com> Cc: Toshi Kani <toshi.kani@hp.com>
* PCI/ACPI: Handle PCI slot devices when creating/destroying PCI busesJiang Liu2013-04-121-0/+12
| | | | | | | | | | | | | | | | | | Currently the pci_slot driver doesn't update PCI slot devices when PCI device hotplug event happens, which may cause memory leak and returning stale information to user. Now the pci_slot driver has been changed as built-in driver, so invoke PCI slot enumeration and destroy routines directly from the PCI core. And remove ACPI PCI sub-driver related code because it isn't needed any more. [bhelgas: removed "extern" from function declarations] Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Toshi Kani <toshi.kani@hp.com>
* PCI/ACPI: Prepare stub functions to handle ACPI PCI (hotplug) slotsJiang Liu2013-04-121-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | Prepare two stub functions to handle ACPI PCI slots and ACPI PCI hotplug slots, which will be invoked by the PCI core when creating/destroying PCI buses. It will be used to get rid of ACPI PCI subdrivers for pci_slot and acpiphp, and eventually remove the ACPI PCI subdriver mechanism. And it will also be used to handle ACPI PCI (hotplug) slots in a unified way, both at boot time and for PCI hotplug operations. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Yinghai Lu <yinghai@kernel.org> Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com> Cc: Toshi Kani <toshi.kani@hp.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Myron Stowe <myron.stowe@redhat.com>
* PCI/ACPI: Use DEVICE_ACPI_HANDLE rather than searching acpi_pci_rootsYinghai Lu2012-09-241-6/+11
| | | | | | | | | | | | When we bind a device to an ACPI handle, the handle is stored in dev->archdata.acpi_handle. For such devices, there's no need to search the acpi_pci_roots list with acpi_get_pci_rootbridge_handle(); we can just use DEVICE_ACPI_HANDLE(dev) directly. [bhelgaas: changelog, reorder "if" to avoid negation] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Len Brown <lenb@kernel.org> Cc: linux-acpi@vger.kernel.org
* PCI/ACPI: provide MMCONFIG address for PCI host bridgesJiang Liu2012-06-221-0/+1
| | | | | | | | | This patch provide MMCONFIG address for PCI host bridges, which will be used to support host bridge hotplug. It gets MMCONFIG address by evaluating _CBA method if available. Reviewed-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* PCI / ACPI: Fix build of the AER driver for CONFIG_ACPI unsetRafael J. Wysocki2011-01-161-3/+0Star
| | | | | | | | | | | | | | After commit 415e12b23792 ("PCI/ACPI: Request _OSC control once for each root bridge (v3)") include/linux/pci-acpi.h is included by drivers/pci/pcie/aer/aerdrv.c and if CONFIG_ACPI is unset, the bogus and unnecessary alternative definition of acpi_find_root_bridge_handle() causes a build error to occur. Remove the offending piece of garbage. Reported-and-tested-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* PCI/ACPI: Request _OSC control once for each root bridge (v3)Rafael J. Wysocki2011-01-141-0/+6
| | | | | | | | | | | | | | Move the evaluation of acpi_pci_osc_control_set() (to request control of PCI Express native features) into acpi_pci_root_add() to avoid calling it many times for the same root complex with the same arguments. Additionally, check if all of the requisite _OSC support bits are set before calling acpi_pci_osc_control_set() for a given root complex. References: https://bugzilla.kernel.org/show_bug.cgi?id=20232 Reported-by: Ozan Caglayan <ozan@pardus.org.tr> Tested-by: Ozan Caglayan <ozan@pardus.org.tr> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI / ACPI / PM: Platform support for PCI PME wake-upRafael J. Wysocki2010-02-231-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Although the majority of PCI devices can generate PMEs that in principle may be used to wake up devices suspended at run time, platform support is generally necessary to convert PMEs into wake-up events that can be delivered to the kernel. If ACPI is used for this purpose, PME signals generated by a PCI device will trigger the ACPI GPE associated with the device to generate an ACPI wake-up event that we can set up a handler for, provided that everything is configured correctly. Unfortunately, the subset of PCI devices that have GPEs associated with them is quite limited. The devices without dedicated GPEs have to rely on the GPEs associated with other devices (in the majority of cases their upstream bridges and, possibly, the root bridge) to generate ACPI wake-up events in response to PME signals from them. Add ACPI platform support for PCI PME wake-up: o Add a framework making is possible to use ACPI system notify handlers for run-time PM. o Add new PCI platform callback ->run_wake() to struct pci_platform_pm_ops allowing us to enable/disable the platform to generate wake-up events for given device. Implemet this callback for the ACPI platform. o Define ACPI wake-up handlers for PCI devices and PCI root buses and make the PCI-ACPI binding code register wake-up notifiers for all PCI devices present in the ACPI tables. o Add function pci_dev_run_wake() which can be used by PCI drivers to check if given device is capable of generating wake-up events at run time. Developed in cooperation with Matthew Garrett <mjg@redhat.com>. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: use pci_is_root_bus() in acpi_find_root_bridge_handle()Kenji Kaneshige2009-06-161-1/+1
| | | | | | | | | | Use pci_is_root_bus() in acpi_find_root_bridge_handle() to check if the pci bus is root, for code consistency. Reviewed-by: Alex Chiang <achiang@hp.com> Reviewed-by: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: use pci_is_root_bus() in acpi_pci_get_bridge_handle()Kenji Kaneshige2009-06-161-1/+1
| | | | | | | | | | Use pci_is_root_bus() in acpi_pci_get_bridge_handle() to check if the pci bus is root, for code consistency. Reviewed-by: Grant Grundler <grundler@parisc-linux.org> Reviewed-by: Alex Chiang <achiang@hp.com> Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI/ACPI: fix wrong assumption in acpi_find_root_bridge_handleKenji Kaneshige2009-03-201-6/+6
| | | | | | | | | | | Current acpi_find_root_bridge_handle() has a assumption that pci_bus->self is NULL on the root pci bus. But it might not be true on some platforms. Because of this wrong assumption, current acpi_find_root_bridge_handle() might cause endless loop. We must check pci_bus->parent instead. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI/ACPI: fix wrong assumption in acpi_pci_get_bridge_handleKenji Kaneshige2009-03-201-5/+4Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current acpi_pci_get_bridge_handle() has an assumption that pci_bus->self is NULL on the root pci bus. But it might not true on some platforms. Because of this wrong assumption, current acpi_pci_get_bridge_handle() might return improper ACPI handle. We must check pci_bus->parent instead. This bug is the root cause of the following kernel panic reported by James Bottomley. This problem was introduced by the commit e8c331e963c58b83db24b7d0e39e8c07f687dbc6. The immediate cause was acpi_pci_get_bridge_handle() returned NULL unexpectedly and it was passed as the second argument of acpi_walk_namespace(). pci_hotplug: PCI Hot Plug PCI Core version: 0.5 acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 IP: [<ffffffff8039646f>] acpi_ns_get_next_node+0xb/0x3c PGD 0 Oops: 0000 [#1] SMP last sysfs file: CPU 0 Modules linked in: Pid: 1, comm: swapper Not tainted 2.6.28 #1 RIP: 0010:[<ffffffff8039646f>] [<ffffffff8039646f>] acpi_ns_get_next_node+0xb/0x3c RSP: 0018:ffff88007f87fd30 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff8037d260 R09: ffff88007f87fdfc R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffffffff80742040(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000000000000010 CR3: 0000000000201000 CR4: 00000000000006a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process swapper (pid: 1, threadinfo ffff88007f87e000, task ffff88007f875040) Stack: 0000000000000000 ffffffff803964f5 ffff88007f81b728 0000000000001001 ffff88007f87fdfc ffffffff8037d260 0000000600000001 0000000000000000 ffffffff8037d260 0000000000000000 0000000000000001 ffff88007f87fdfc Call Trace: [<ffffffff803964f5>] acpi_ns_walk_namespace+0x55/0x138 [<ffffffff8037d260>] is_pci_dock_device+0x0/0x20 [<ffffffff8037d260>] is_pci_dock_device+0x0/0x20 [<ffffffff80394a9e>] acpi_walk_namespace+0x5f/0x83 [<ffffffff8037dd33>] detect_ejectable_slots+0x53/0x70 [<ffffffff8037de38>] add_bridge+0xe8/0x200 [<ffffffff80394aaa>] acpi_walk_namespace+0x6b/0x83 [<ffffffff803a4ad1>] acpi_pci_register_driver+0x48/0x61 [<ffffffff806fc5df>] acpiphp_init+0x0/0x58 [<ffffffff806fc732>] acpiphp_glue_init+0x4c/0x5a [<ffffffff806fc616>] acpiphp_init+0x37/0x58 [<ffffffff8020903b>] _stext+0x3b/0x180 [<ffffffff80312598>] create_proc_entry+0x58/0xa0 [<ffffffff802815d1>] register_irq_proc+0xc1/0xe0 [<ffffffff806db64b>] kernel_init+0x152/0x1ac [<ffffffff8023d970>] finish_task_switch+0x0/0x110 [<ffffffff8020ca7a>] child_rip+0xa/0x20 [<ffffffff8020c47c>] restore_args+0x0/0x30 [<ffffffff806db4f9>] kernel_init+0x0/0x1ac [<ffffffff8020ca70>] child_rip+0x0/0x20 Code: 89 c2 48 8b 00 48 85 c0 75 f5 48 8b 45 00 48 89 02 44 88 65 09 48 89 5d 00 31 c0 5b 5d 41 5c c3 53 48 85 d2 89 fb 48 89 d7 75 06 <48> 8b 56 10 eb 08 e8 73 f1 ff ff 48 89 c2 85 db 74 1a eb 13 0f RIP [<ffffffff8039646f>] acpi_ns_get_next_node+0xb/0x3c RSP <ffff88007f87fd30> CR2: 0000000000000010 ---[ end trace a7919e7f17c0a725 ]--- Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI/ACPI: rename pci_osc_control_set()Kenji Kaneshige2009-03-201-45/+0Star
| | | | | | | | | | | | | - Rename pci_osc_control_set() to acpi_pci_osc_control_set() according to the other API names in drivers/acpi/pci_root.c. - Move _OSC related definitions to include/linux/acpi.h because _OSC related API is implemented in drivers/acpi/pci_root.c now. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Reviewed-by: Andrew Patterson <andrew.patterson@hp.com> Tested-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI/ACPI: move _OSC code to pci_root.cKenji Kaneshige2009-03-201-1/+0Star
| | | | | | | | | | | | | | | | | | Move PCI _OSC management code from drivers/pci/pci-acpi.c to drivers/acpi/pci_root.c. The benefits are - We no longer need struct osc_data and its management code (contents are moved to struct acpi_pci_root). This simplify the code, and we no longer care about kmalloc() failure. - We can make pci_acpi_osc_support() be a static function, which is called only from drivers/acpi/pci_root.c. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Reviewed-by: Andrew Patterson <andrew.patterson@hp.com> Tested-by: Andrew Patterson <andrew.patterson@hp.com> Acked-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI hotplug: introduce functions for ACPI slot detectionKenji Kaneshige2009-01-071-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | Some ACPI related PCI hotplug code can be shared among PCI hotplug drivers. This patch introduces the following functions in drivers/pci/hotplug/acpi_pcihp.c to share the code, and changes acpiphp and pciehp to use them. - int acpi_pci_detect_ejectable(struct pci_bus *pbus) This checks if the specified PCI bus has ejectable slots. - int acpi_pci_check_ejectable(struct pci_bus *pbus, acpi_handle handle) This checks if the specified handle is ejectable ACPI PCI slot. The 'pbus' parameter is needed to check if 'handle' is PCI related ACPI object. This patch also introduces the following inline function in include/linux/pci-acpi.h, which is useful to get ACPI handle of the PCI bridge from struct pci_bus of the bridge's secondary bus. - static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus) This returns ACPI handle of the PCI bridge which generates PCI bus specified by 'pbus'. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* ACPI/PCI: remove obsolete _OSC capability support functionsAndrew Patterson2009-01-071-11/+0Star
| | | | | | | | | | | The acpi_query_osc, __pci_osc_support_set, pci_osc_support_set, and pcie_osc_support_set functions have been obsoleted in favor of setting these capabilities during root bridge discovery with pci_acpi_osc_support. There are no longer any callers of these functions, so remove them. Signed-off-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* ACPI/PCI: call _OSC support during root bridge discoveryAndrew Patterson2009-01-071-0/+1
| | | | | | | | | | Add pci_acpi_osc_support() and call it when a PCI bridge is added. This allows us to avoid having every individual PCI root bridge driver call _OSC support for every root bridge in their probe functions, a significant savings in boot time. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* ACPI/PCI: include missing acpi.h file in pci-acpi.h.Andrew Patterson2009-01-071-0/+2
| | | | | | | The pci-acpi.h file will not compile without including linux/acpi.h. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI: add acpi_find_root_bridge_handleJiri Slaby2008-08-181-0/+11
| | | | | | | | | | | Consolidate finding of a root bridge and getting its handle to the one inline function. It's cut & pasted on multiple places. Use this new inline in those. Cc: kristen.c.accardi@intel.com Acked-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* PCI ACPI: Added a function to register _OSC with only PCIe devices.Andrew Patterson2008-02-021-1/+10
| | | | | | | | | | | | | | The function pci_osc_support_set() traverses every root bridge when checking for _OSC support for a capability. It quits as soon as it finds a device/bridge that doesn't support the requested capability. This won't work for systems that have mixed PCI and PCIe bridges when checking for PCIe features. I split this function into two -- pci_osc_support_set() and pcie_osc_support_set(). The latter is used when only PCIe devices should be traversed. Signed-off-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] PCI: fix pciehp compile issue when CONFIG_ACPI is not enabledakpm@osdl.org2006-06-111-1/+1
| | | | | | | | Fix build error when CONFIG_ACPI not defined Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] pciehp: request control of each hotplug controller individuallyrajesh.shah@intel.com2005-11-111-2/+3
| | | | | | | | | | | | | This patch tweaks the way pciehp requests control of the hotplug hardware from BIOS. It now tries to invoke the ACPI _OSC method for a specific hotplug controller only, rather than walking the entire acpi namespace invoking all possible _OSC methods under all host bridges. This allows us to gain control of each hotplug controller individually, even if BIOS fails to give us control of some other hotplug controller in the system. Signed-off-by: Rajesh Shah <rajesh.shah@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Linux-2.6.12-rc2Linus Torvalds2005-04-171-0/+61
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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