Merge tag 'pci-v3.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "PCI changes for the v3.14 merge window:

  Resource management
    - Change pci_bus_region addresses to dma_addr_t (Bjorn Helgaas)
    - Support 64-bit AGP BARs (Bjorn Helgaas, Yinghai Lu)
    - Add pci_bus_address() to get bus address of a BAR (Bjorn Helgaas)
    - Use pci_resource_start() for CPU address of AGP BARs (Bjorn Helgaas)
    - Enforce bus address limits in resource allocation (Yinghai Lu)
    - Allocate 64-bit BARs above 4G when possible (Yinghai Lu)
    - Convert pcibios_resource_to_bus() to take pci_bus, not pci_dev (Yinghai Lu)

  PCI device hotplug
    - Major rescan/remove locking update (Rafael J. Wysocki)
    - Make ioapic builtin only (not modular) (Yinghai Lu)
    - Fix release/free issues (Yinghai Lu)
    - Clean up pciehp (Bjorn Helgaas)
    - Announce pciehp slot info during enumeration (Bjorn Helgaas)

  MSI
    - Add pci_msi_vec_count(), pci_msix_vec_count() (Alexander Gordeev)
    - Add pci_enable_msi_range(), pci_enable_msix_range() (Alexander Gordeev)
    - Deprecate "tri-state" interfaces: fail/success/fail+info (Alexander Gordeev)
    - Export MSI mode using attributes, not kobjects (Greg Kroah-Hartman)
    - Drop "irq" param from *_restore_msi_irqs() (DuanZhenzhong)

  SR-IOV
    - Clear NumVFs when disabling SR-IOV in sriov_init() (ethan.zhao)

  Virtualization
    - Add support for save/restore of extended capabilities (Alex Williamson)
    - Add Virtual Channel to save/restore support (Alex Williamson)
    - Never treat a VF as a multifunction device (Alex Williamson)
    - Add pci_try_reset_function(), et al (Alex Williamson)

  AER
    - Ignore non-PCIe error sources (Betty Dall)
    - Support ACPI HEST error sources for domains other than 0 (Betty Dall)
    - Consolidate HEST error source parsers (Bjorn Helgaas)
    - Add a TLP header print helper (Borislav Petkov)

  Freescale i.MX6
    - Remove unnecessary code (Fabio Estevam)
    - Make reset-gpio optional (Marek Vasut)
    - Report "link up" only after link training completes (Marek Vasut)
    - Start link in Gen1 before negotiating for Gen2 mode (Marek Vasut)
    - Fix PCIe startup code (Richard Zhu)

  Marvell MVEBU
    - Remove duplicate of_clk_get_by_name() call (Andrew Lunn)
    - Drop writes to bridge Secondary Status register (Jason Gunthorpe)
    - Obey bridge PCI_COMMAND_MEM and PCI_COMMAND_IO bits (Jason Gunthorpe)
    - Support a bridge with no IO port window (Jason Gunthorpe)
    - Use max_t() instead of max(resource_size_t,) (Jingoo Han)
    - Remove redundant of_match_ptr (Sachin Kamat)
    - Call pci_ioremap_io() at startup instead of dynamically (Thomas Petazzoni)

  NVIDIA Tegra
    - Disable Gen2 for Tegra20 and Tegra30 (Eric Brower)

  Renesas R-Car
    - Add runtime PM support (Valentine Barshak)
    - Fix rcar_pci_probe() return value check (Wei Yongjun)

  Synopsys DesignWare
    - Fix crash in dw_msi_teardown_irq() (Bjørn Erik Nilsen)
    - Remove redundant call to pci_write_config_word() (Bjørn Erik Nilsen)
    - Fix missing MSI IRQs (Harro Haan)
    - Add dw_pcie prefix before cfg_read/write (Pratyush Anand)
    - Fix I/O transfers by using CPU (not realio) address (Pratyush Anand)
    - Whitespace cleanup (Jingoo Han)

  EISA
    - Call put_device() if device_register() fails (Levente Kurusa)
    - Revert EISA initialization breakage ((Bjorn Helgaas)

  Miscellaneous
    - Remove unused code, including PCIe 3.0 interfaces (Stephen Hemminger)
    - Prevent bus conflicts while checking for bridge apertures (Bjorn Helgaas)
    - Stop clearing bridge Secondary Status when setting up I/O aperture (Bjorn Helgaas)
    - Use dev_is_pci() to identify PCI devices (Yijing Wang)
    - Deprecate DEFINE_PCI_DEVICE_TABLE (Joe Perches)
    - Update documentation 00-INDEX (Erik Ekman)"

* tag 'pci-v3.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (119 commits)
  Revert "EISA: Initialize device before its resources"
  Revert "EISA: Log device resources in dmesg"
  vfio-pci: Use pci "try" reset interface
  PCI: Check parent kobject in pci_destroy_dev()
  xen/pcifront: Use global PCI rescan-remove locking
  powerpc/eeh: Use global PCI rescan-remove locking
  PCI: Fix pci_check_and_unmask_intx() comment typos
  PCI: Add pci_try_reset_function(), pci_try_reset_slot(), pci_try_reset_bus()
  MPT / PCI: Use pci_stop_and_remove_bus_device_locked()
  platform / x86: Use global PCI rescan-remove locking
  PCI: hotplug: Use global PCI rescan-remove locking
  pcmcia: Use global PCI rescan-remove locking
  ACPI / hotplug / PCI: Use global PCI rescan-remove locking
  ACPI / PCI: Use global PCI rescan-remove locking in PCI root hotplug
  PCI: Add global pci_lock_rescan_remove()
  PCI: Cleanup pci.h whitespace
  PCI: Reorder so actual code comes before stubs
  PCI/AER: Support ACPI HEST AER error sources for PCI domains other than 0
  ACPICA: Add helper macros to extract bus/segment numbers from HEST table.
  PCI: Make local functions static
  ...

109 files changed, 2510 insertions, 1985 deletions

diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
index 5210a51c90fd..a3c5a6685036 100644
--- a/Documentation/ABI/testing/sysfs-bus-pci
+++ b/Documentation/ABI/testing/sysfs-bus-pci
@@ -70,18 +70,15 @@ Date:		September, 2011
 Contact:	Neil Horman <nhorman@tuxdriver.com>
 Description:
 		The /sys/devices/.../msi_irqs directory contains a variable set
-		of sub-directories, with each sub-directory being named after a
-		corresponding msi irq vector allocated to that device.  Each
-		numbered sub-directory N contains attributes of that irq.
-		Note that this directory is not created for device drivers which
-		do not support msi irqs
+		of files, with each file being named after a corresponding msi
+		irq vector allocated to that device.
 
-What:		/sys/bus/pci/devices/.../msi_irqs/<N>/mode
+What:		/sys/bus/pci/devices/.../msi_irqs/<N>
 Date:		September 2011
 Contact:	Neil Horman <nhorman@tuxdriver.com>
 Description:
 		This attribute indicates the mode that the irq vector named by
-		the parent directory is in (msi vs. msix)
+		the file is in (msi vs. msix)
 
 What:		/sys/bus/pci/devices/.../remove
 Date:		January 2009
diff --git a/Documentation/PCI/00-INDEX b/Documentation/PCI/00-INDEX
index 812b17fe3ed0..147231f1613e 100644
--- a/Documentation/PCI/00-INDEX
+++ b/Documentation/PCI/00-INDEX
@@ -2,12 +2,12 @@
 	- this file
 MSI-HOWTO.txt
 	- the Message Signaled Interrupts (MSI) Driver Guide HOWTO and FAQ.
-PCI-DMA-mapping.txt
-	- info for PCI drivers using DMA portably across all platforms
 PCIEBUS-HOWTO.txt
 	- a guide describing the PCI Express Port Bus driver
 pci-error-recovery.txt
 	- info on PCI error recovery
+pci-iov-howto.txt
+	- the PCI Express I/O Virtualization HOWTO
 pci.txt
 	- info on the PCI subsystem for device driver authors
 pcieaer-howto.txt
diff --git a/Documentation/PCI/MSI-HOWTO.txt b/Documentation/PCI/MSI-HOWTO.txt
index a09178086c30..a8d01005f480 100644
--- a/Documentation/PCI/MSI-HOWTO.txt
+++ b/Documentation/PCI/MSI-HOWTO.txt
@@ -82,93 +82,111 @@ Most of the hard work is done for the driver in the PCI layer.  It simply
 has to request that the PCI layer set up the MSI capability for this
 device.
 
-4.2.1 pci_enable_msi
+4.2.1 pci_enable_msi_range
 
-int pci_enable_msi(struct pci_dev *dev)
+int pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec)
 
-A successful call allocates ONE interrupt to the device, regardless
-of how many MSIs the device supports.  The device is switched from
-pin-based interrupt mode to MSI mode.  The dev->irq number is changed
-to a new number which represents the message signaled interrupt;
-consequently, this function should be called before the driver calls
-request_irq(), because an MSI is delivered via a vector that is
-different from the vector of a pin-based interrupt.
+This function allows a device driver to request any number of MSI
+interrupts within specified range from 'minvec' to 'maxvec'.
 
-4.2.2 pci_enable_msi_block
+If this function returns a positive number it indicates the number of
+MSI interrupts that have been successfully allocated.  In this case
+the device is switched from pin-based interrupt mode to MSI mode and
+updates dev->irq to be the lowest of the new interrupts assigned to it.
+The other interrupts assigned to the device are in the range dev->irq
+to dev->irq + returned value - 1.  Device driver can use the returned
+number of successfully allocated MSI interrupts to further allocate
+and initialize device resources.
 
-int pci_enable_msi_block(struct pci_dev *dev, int count)
+If this function returns a negative number, it indicates an error and
+the driver should not attempt to request any more MSI interrupts for
+this device.
 
-This variation on the above call allows a device driver to request multiple
-MSIs.  The MSI specification only allows interrupts to be allocated in
-powers of two, up to a maximum of 2^5 (32).
+This function should be called before the driver calls request_irq(),
+because MSI interrupts are delivered via vectors that are different
+from the vector of a pin-based interrupt.
 
-If this function returns 0, it has succeeded in allocating at least as many
-interrupts as the driver requested (it may have allocated more in order
-to satisfy the power-of-two requirement).  In this case, the function
-enables MSI on this device and updates dev->irq to be the low