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* Merge branch 'pci/stephen-const' into nextBjorn Helgaas2012-09-12
|\ | | | | | | | | | | | | | | * pci/stephen-const: make drivers with pci error handlers const scsi: make pci error handlers const netdev: make pci_error_handlers const PCI: Make pci_error_handlers const
| * make drivers with pci error handlers constStephen Hemminger2012-09-07
| | | | | | | | | | | | Covers the rest of the uses of pci error handler. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| * scsi: make pci error handlers constStephen Hemminger2012-09-07
| | | | | | | | Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| * netdev: make pci_error_handlers constStephen Hemminger2012-09-07
| | | | | | | | Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| * PCI: Make pci_error_handlers constStephen Hemminger2012-09-07
| | | | | | | | | | | | | | Since pci_error_handlers is just a function table make it const. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Linas Vepstas <linasvepstas@gmail.com>
* | Merge branch 'pci/gavin-window-alignment' into nextBjorn Helgaas2012-09-11
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | * pci/gavin-window-alignment: powerpc/powernv: I/O and memory alignment for P2P bridges powerpc/PCI: Override pcibios_window_alignment() PCI: Refactor pbus_size_mem() PCI: Align P2P windows using pcibios_window_alignment() PCI: Add weak pcibios_window_alignment() interface
| * | PCI: Refactor pbus_size_mem()Gavin Shan2012-09-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | The original idea comes from Ram Pai. This patch puts the chunk of code for calculating the minimal alignment of memory window into a separate inline function. Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| * | PCI: Align P2P windows using pcibios_window_alignment()Gavin Shan2012-09-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes pbus_size_io() and pbus_size_mem() to do window (I/O, memory and prefetchable memory) reassignment based on the minimal alignments for the P2P bridge, which was retrieved by window_alignment(). [bhelgaas: changelog] Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| * | PCI: Add weak pcibios_window_alignment() interfaceGavin Shan2012-09-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements a weak function to return the default I/O or memory window alignment for a P2P bridge. By default, I/O windows are aligned to 4KiB or 1KiB and memory windows are aligned to 4MiB. Some platforms, e.g., powernv, have special alignment requirements and can override pcibios_window_alignment(). [bhelgaas: changelog] Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | | Merge branch 'pci/shengzhou-irq' into nextBjorn Helgaas2012-09-10
|\ \ \ | | | | | | | | | | | | | | | | * pci/shengzhou-irq: PCI: Use dev->irq instead of dev->pin to enable non MSI/INTx interrupt
| * | | PCI: Use dev->irq instead of dev->pin to enable non MSI/INTx interruptShengzhou Liu2012-09-07
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | On some platforms, root port has neither MSI/MSI-X nor INTx interrupt generated in RC mode. In this case, we have to use other interrupt, e.g., system shared interrupt, for port service IRQ to have AER, Hot-plug, etc., services work. Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | | Merge branch 'pci/oliver-pciehp-resume' into nextBjorn Helgaas2012-09-10
|\ \ \ | | | | | | | | | | | | | | | | * pci/oliver-pciehp-resume: PCI: pciehp: Always implement resume, regardless of pciehp_force param
| * | | PCI: pciehp: Always implement resume, regardless of pciehp_force paramOliver Neukum2012-09-07
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, the driver ignored resume unless the pciehp_force module_param was specified. On some laptops that means that interrupts are not delivered after S3, so card removals and insertions are not handled. This patch makes the driver handle resume regardless of pciehp_force. [bhelgaas: changelog] Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl>
* | | Merge branch 'pci/feng-avoid-kmalloc' into nextBjorn Helgaas2012-09-10
|\ \ \ | | | | | | | | | | | | | | | | | | | | * pci/feng-avoid-kmalloc: PCI: Remove the obsolete no_pci_devices() check PCI: Use pci_device_id on stack for pci_get_subsys/class() to avoid kmalloc
| * | | PCI: Remove the obsolete no_pci_devices() checkFeng Tang2012-09-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In function pci_get_subsys() there is a check: /* * pci_find_subsys() can be called on the ide_setup() path, * super-early in boot. But the down_read() will enable local * interrupts, which can cause some machines to crash. So here we * detect and flag that situation and bail out early. */ if (unlikely(no_pci_devices())) return NULL; But there is no ide_setup() now, and no down_read() either, which makes the check obsolete. So remove it. Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | PCI: Use pci_device_id on stack for pci_get_subsys/class() to avoid kmallocFeng Tang2012-08-24
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a kernel warning https://lkml.org/lkml/2012/7/31/682 pci_get_subsys() may get called in late system reboot stage, using a sleepable kmalloc() sounds fragile and will cause a kernel warning with my recent commmit 55c844a "x86/reboot: Fix a warning message triggered by stop_other_cpus()" which disable local interrupt in late system shutdown/reboot phase. Using a local parameter instead will fix it and make it eligible for calling from atomic context. Do the same change for the pci_get_class() as suggested by Bjorn Helgaas. Initializing the on-stack struct pci_device_id suggested by Fengguang Wu and Jiri Slaby. Section 6.7.8 of the C99 standard guarantees that when we initialize some of the struct members, the rest of the struct is implicitly initialized the same as objects with static storage duration, i.e., to zero in this case. [bhelgaas: changelog, incorporate Fengguang/Jiri initialization fix] Bisected-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Fengguang Wu <fengguang.wu@intel.com>
* | | Merge branch 'pci/bjorn-remove-fakephp' into nextBjorn Helgaas2012-09-06
|\ \ \ | | | | | | | | | | | | | | | | * pci/bjorn-remove-fakephp: PCI: Remove the fakephp driver
| * | | PCI: Remove the fakephp driverBjorn Helgaas2012-08-24
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | The fakephp driver was scheduled for removal in 2011. Fakephp presented /sys/bus/pci/slots/.../power files for every PCI function. Writing "0" to one of these files logically removed the device from the system. The PCI core now provides the same functionality with /sys/bus/pci/devices/.../remove. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | | Merge branch 'pci/bjorn-cleanup-remove' into nextBjorn Helgaas2012-08-23
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * pci/bjorn-cleanup-remove: PCI: Remove unused pci_dev_b() sgi-agp: Use list_for_each_entry() for bus->devices traversal parisc/PCI: Use list_for_each_entry() for bus->devices traversal parisc/PCI: Enable PERR/SERR on all devices frv/PCI: Use list_for_each_entry() for bus->devices traversal PCI: Leave normal LIST_POISON in deleted list entries PCI: Rename local variables to conventional names PCI: Remove unused, commented-out, code PCI: Stop and remove devices in one pass PCI: Fold stop and remove helpers into their callers PCI: Use list_for_each_entry() for bus->devices traversal PCI: Remove pci_stop_and_remove_behind_bridge() PCI: Don't export stop_bus_device and remove_bus_device interfaces pcmcia: Use common pci_stop_and_remove_bus_device() PCI: acpiphp: Use common pci_stop_and_remove_bus_device() PCI: acpiphp: Stop disabling bridges on remove
| * | | sgi-agp: Use list_for_each_entry() for bus->devices traversalBjorn Helgaas2012-08-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace list_for_each() + pci_dev_b() with the simpler list_for_each_entry(). Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Yinghai Lu <yinghai@kernel.org> CC: David Airlie <airlied@linux.ie>
| * | | parisc/PCI: Use list_for_each_entry() for bus->devices traversalBjorn Helgaas2012-08-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace list_for_each() + pci_dev_b() with the simpler list_for_each_entry(). Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Yinghai Lu <yinghai@kernel.org> CC: linux-parisc@vger.kernel.org
| * | | parisc/PCI: Enable PERR/SERR on all devicesBjorn Helgaas2012-08-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, we enabled PERR & SERR for the first device on the bus, but left other devices alone. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Yinghai Lu <yinghai@kernel.org> CC: linux-parisc@vger.kernel.org
| * | | PCI: Leave normal LIST_POISON in deleted list entriesBjorn Helgaas2012-08-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | list_del() already sets next/prev to LIST_POISON1/LIST_POISON2, so we don't need to do anything special here to prevent further list accesses. Tested-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Yinghai Lu <yinghai@kernel.org>
| * | | PCI: Rename local variables to conventional namesBjorn Helgaas2012-08-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | "bus" is the conventional name for a "struct pci_bus *" variable. Tested-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Yinghai Lu <yinghai@kernel.org>
| * | | PCI: Remove unused, commented-out, codeBjorn Helgaas2012-08-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This removes unused code that was already commented out. Tested-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Yinghai Lu <yinghai@kernel.org>
| * | | PCI: Stop and remove devices in one passBjorn Helgaas2012-08-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, when we removed a PCI device, we made two passes over the hierarchy rooted at the device. In the first pass, we stopped all the devices, and in the second, we removed them. This patch combines the two passes into one so that we remove a device as soon as it and all its children have been stopped. Note that we previously stopped devices in reverse order and removed them in forward order. Now we stop and remove them in reverse order. Tested-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Yinghai Lu <yinghai@kernel.org>
| * | | PCI: Fold stop and remove helpers into their callersBjorn Helgaas2012-08-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pci_stop_bus_devices() is only two lines of code and is only called by pci_stop_bus_device(), so I think it's easier to read if we just fold it into the caller. Similarly for __pci_remove_behind_bridge(). Tested-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Yinghai Lu <yinghai@kernel.org>
| * | | PCI: Use list_for_each_entry() for bus->devices traversalBjorn Helgaas2012-08-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace list_for_each() + pci_dev_b() with the simpler list_for_each_entry(). Tested-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Yinghai Lu <yinghai@kernel.org>
| * | | PCI: Remove pci_stop_and_remove_behind_bridge()Bjorn Helgaas2012-08-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PCMCIA CardBus driver was the only user of pci_stop_and_remove_behind_bridge(), and it now uses pci_stop_and_remove_bus_device() instead, so remove this interface. This removes exported symbol pci_stop_and_remove_behind_bridge. Tested-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Yinghai Lu <yinghai@kernel.org>
| * | | PCI: Don't export stop_bus_device and remove_bus_device interfacesBjorn Helgaas2012-08-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The acpiphp hotplug driver was the only user of pci_stop_bus_device() and __pci_remove_bus_device(), and it now uses pci_stop_and_remove_bus_device() instead, so stop exposing these interfaces. This removes these exported symbols: __pci_remove_bus_device pci_stop_bus_device Tested-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Yinghai Lu <yinghai@kernel.org>
| * | | pcmcia: Use common pci_stop_and_remove_bus_device()Bjorn Helgaas2012-08-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use pci_stop_and_remove_bus_device() like most other hotplug drivers rather than the special-purpose "behind_bridge" variant. This just means we have to iterate through all the devices downstream of the bridge ourselves, which is the same thing pci_stop_behind_bridge() did. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Yinghai Lu <yinghai@kernel.org>
| * | | PCI: acpiphp: Use common pci_stop_and_remove_bus_device()Bjorn Helgaas2012-08-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use pci_stop_and_remove_bus_device() like most other hotplug drivers rather than stopping and removing separately. Tested-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Yinghai Lu <yinghai@kernel.org>
| * | | PCI: acpiphp: Stop disabling bridges on removeBjorn Helgaas2012-08-17
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | acpiphp_disable_slot() turns off power to the slot immediately after calling disable_device(), so there's no point in disabling any bridges below the slot: we're about to turn them off anyway. Tested-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Yinghai Lu <yinghai@kernel.org>
* | | Merge branch 'pci/bjorn-find-next-ext-cap' into nextBjorn Helgaas2012-08-23
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | * pci/bjorn-find-next-ext-cap: PCI: Add Vendor-Specific Extended Capability header info PCI: Add pci_find_next_ext_capability() Conflicts: drivers/pci/pci.c
| * | PCI: Add pci_find_next_ext_capability()Bjorn Helgaas2012-08-22
| |/ | | | | | | | | | | | | | | Some extended capabilities, e.g., the vendor-specific capability, can occur several times. The existing pci_find_ext_capability() only finds the first occurrence. This adds pci_find_next_ext_capability(), which can iterate through all of them. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | rtl8192e: Use PCI Express Capability accessorsJiang Liu2012-08-23
| | | | | | | | | | | | Use PCI Express Capability access functions to simplify rtl8192e driver. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | et131x: Use PCI Express Capability accessorsJiang Liu2012-08-23
| | | | | | | | | | | | Use PCI Express Capability access functions to simplify et131x driver. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | rapdio/tsi721: Use PCI Express Capability accessorsJiang Liu2012-08-23
| | | | | | | | | | | | | | | | Use PCI Express Capability access functions to simplify tsi721 driver. [bhelgaas: use word (16-bit) accesses for PCI_EXP_DEVCTL, PCI_EXP_DEVCTL2] Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Alexandre Bounine <alexandre.bounine@idt.com>
* | drm/radeon: Use PCI Express Capability accessorsJiang Liu2012-08-23
| | | | | | | | | | | | | | Use PCI Express Capability access functions to simplify radeon driver. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
* | [SCSI] qla4xxx: Use PCI Express Capability accessorsJiang Liu2012-08-23
| | | | | | | | | | | | Use PCI Express Capability access functions to simplify qla4xxx driver. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | [SCSI] qla4xxx: Use PCI Express Capability accessorsJiang Liu2012-08-23
| | | | | | | | | | | | Use PCI Express Capability access functions to simplify qla2xxx driver. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | IB/qib: Use PCI Express Capability accessorsJiang Liu2012-08-23
| | | | | | | | | | | | | | | | Use PCI Express Capability access functions to simplify qib driver. 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> Acked-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
* | IB/mthca: Use PCI Express Capability accessorsJiang Liu2012-08-23
| | | | | | | | | | | | | | | | Use PCI Express Capability access functions to simplify mthca driver. 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> Acked-by: Roland Dreier <roland@purestorage.com>
* | rtlwifi: Use PCI Express Capability accessorsJiang Liu2012-08-23
| | | | | | | | | | | | | | Use PCI Express Capability access functions to simplify rtlwifi driver. [bhelgaas: split iwlegacy, iwlwifi, rtlwifi into separate patches] Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | iwlwifi: Use PCI Express Capability accessorsJiang Liu2012-08-23
| | | | | | | | | | | | | | Use PCI Express Capability access functions to simplify iwlwifi driver. [bhelgaas: split iwlegacy, iwlwifi, rtlwifi into separate patches] Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | iwlegacy: Use PCI Express Capability accessorsJiang Liu2012-08-23
| | | | | | | | | | | | | | Use PCI Express Capability access functions to simplify iwlegacy driver. [bhelgaas: split iwlegacy, iwlwifi, rtlwifi into separate patches] Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | ath9k: Use PCI Express Capability accessorsJiang Liu2012-08-23
| | | | | | | | | | | | Use PCI Express Capability access functions to simplify ath9k driver. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | atl1c: Use PCI Express Capability accessorsJiang Liu2012-08-23
| | | | | | | | | | | | Use PCI Express Capability access functions to simplify atl1c driver. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | cxgb4: Use PCI Express Capability accessorsJiang Liu2012-08-23
| | | | | | | | | | | | Use PCI Express Capability access functions to simplify cxgb4 driver. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | cxgb3: Use PCI Express Capability accessorsJiang Liu2012-08-23
| | | | | | | | | | | | | | Use PCI Express Capability access functions to simplify cxgb3 driver. [bhelgaas: split cxgb3 and cxgb4 into separate patches] Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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