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Merge tag 'pci-v4.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

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Pull PCI updates from Bjorn Helgaas:
 "PCI changes for the v4.3 merge window:

  Enumeration:
   - Allocate ATS struct during enumeration (Bjorn Helgaas)
   - Embed ATS info directly into struct pci_dev (Bjorn Helgaas)
   - Reduce size of ATS structure elements (Bjorn Helgaas)
   - Stop caching ATS Invalidate Queue Depth (Bjorn Helgaas)
   - iommu/vt-d: Cache PCI ATS state and Invalidate Queue Depth (Bjorn Helgaas)
   - Move MPS configuration check to pci_configure_device() (Bjorn Helgaas)
   - Set MPS to match upstream bridge (Keith Busch)
   - ARM/PCI: Set MPS before pci_bus_add_devices() (Murali Karicheri)
   - Add pci_scan_root_bus_msi() (Lorenzo Pieralisi)
   - ARM/PCI, designware, xilinx: Use pci_scan_root_bus_msi() (Lorenzo Pieralisi)

  Resource management:
   - Call pci_read_bridge_bases() from core instead of arch code (Lorenzo Pieralisi)

  PCI device hotplug:
   - pciehp: Remove unused interrupt events (Bjorn Helgaas)
   - pciehp: Remove ignored MRL sensor interrupt events (Bjorn Helgaas)
   - pciehp: Handle invalid data when reading from non-existent devices (Jarod Wilson)
   - pciehp: Simplify pcie_poll_cmd() (Yijing Wang)
   - Use "slot" and "pci_slot" for struct hotplug_slot and struct pci_slot (Yijing Wang)
   - Protect pci_bus->slots with pci_slot_mutex, not pci_bus_sem (Yijing Wang)
   - Hold pci_slot_mutex while searching bus->slots list (Yijing Wang)

  Power management:
   - Disable async suspend/resume for JMicron multi-function SATA/AHCI (Zhang Rui)

  Virtualization:
   - Add ACS quirks for Intel I219-LM/V (Alex Williamson)
   - Restore ACS configuration as part of pci_restore_state() (Alexander Duyck)

  MSI:
   - Add pcibios_alloc_irq() and pcibios_free_irq() (Jiang Liu)
   - x86: Implement pcibios_alloc_irq() and pcibios_free_irq() (Jiang Liu)
   - Add helpers to manage pci_dev->irq and pci_dev->irq_managed (Jiang Liu)
   - Free legacy IRQ when enabling MSI/MSI-X (Jiang Liu)
   - ARM/PCI: Remove msi_controller from struct pci_sys_data (Lorenzo Pieralisi)
   - Remove unused pcibios_msi_controller() hook (Lorenzo Pieralisi)

  Generic host bridge driver:
   - Remove dependency on ARM-specific struct hw_pci (Jayachandran C)
   - Build setup-irq.o for arm64 (Jayachandran C)
   - Add arm64 support (Jayachandran C)

  APM X-Gene host bridge driver:
   - Add APM X-Gene PCIe 64-bit prefetchable window (Duc Dang)
   - Add support for a 64-bit prefetchable memory window (Duc Dang)
   - Drop owner assignment from platform_driver (Krzysztof Kozlowski)

  Broadcom iProc host bridge driver:
   - Allow BCMA bus driver to be built as module (Hauke Mehrtens)
   - Delete unnecessary checks before phy calls (Markus Elfring)
   - Add arm64 support (Ray Jui)

  Synopsys DesignWare host bridge driver:
   - Don't complain missing *config* reg space if va_cfg0 is set (Murali Karicheri)

  TI DRA7xx host bridge driver:
   - Disable pm_runtime on get_sync failure (Kishon Vijay Abraham I)
   - Add PM support (Kishon Vijay Abraham I)
   - Clear MSE bit during suspend so clocks will idle (Kishon Vijay Abraham I)
   - Add support to make GPIO drive PERST# line (Kishon Vijay Abraham I)

  Xilinx AXI host bridge driver:
   - Check for MSI interrupt flag before handling as INTx (Russell Joyce)

  Miscellaneous:
   - Fix Intersil/Techwell TW686[4589] AV capture class code (Krzysztof Hałasa)
   - Use PCI_CLASS_SERIAL_USB instead of bare number (Bjorn Helgaas)
   - Fix generic NCR 53c810 class code quirk (Bjorn Helgaas)
   - Fix TI816X class code quirk (Bjorn Helgaas)
   - Remove unused "pci_probe" flags (Bjorn Helgaas)
   - Host bridge driver code simplifications (Fabio Estevam)
   - Add dev_flags bit to access VPD through function 0 (Mark Rustad)
   - Add VPD function 0 quirk for Intel Ethernet devices (Mark Rustad)
   - Kill off set_irq_flags() usage (Rob Herring)
   - Remove Intel Cherrytrail D3 delays (Srinidhi Kasagar)
   - Clean up pci_find_capability() (Wei Yang)"

* tag 'pci-v4.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (72 commits)
  PCI: Disable async suspend/resume for JMicron multi-function SATA/AHCI
  PCI: Set MPS to match upstream bridge
  PCI: Move MPS configuration check to pci_configure_device()
  PCI: Drop references acquired by of_parse_phandle()
  PCI/MSI: Remove unused pcibios_msi_controller() hook
  ARM/PCI: Remove msi_controller from struct pci_sys_data
  ARM/PCI, designware, xilinx: Use pci_scan_root_bus_msi()
  PCI: Add pci_scan_root_bus_msi()
  ARM/PCI: Replace panic with WARN messages on failures
  PCI: generic: Add arm64 support
  PCI: Build setup-irq.o for arm64
  PCI: generic: Remove dependency on ARM-specific struct hw_pci
  PCI: imx6: Simplify a trivial if-return sequence
  PCI: spear: Use BUG_ON() instead of condition followed by BUG()
  PCI: dra7xx: Remove unneeded use of IS_ERR_VALUE()
  PCI: Remove pci_ats_enabled()
  PCI: Stop caching ATS Invalidate Queue Depth
  PCI: Move ATS declarations to linux/pci.h so they're all together
  PCI: Clean up ATS error handling
  PCI: Use pci_physfn() rather than looking up physfn by hand
  ...
This commit is contained in:
Linus Torvalds
2015-08-31 17:14:39 -07:00
parent edc837da4b 9ca678d1df
commit 26f8b7edc9
64 changed files with 796 additions and 681 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/iommu/intel-iommu.c
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@@ -408,6 +408,10 @@ struct device_domain_info {
struct list_head global; /* link to global list */
u8 bus; /* PCI bus number */
u8 devfn; /* PCI devfn number */
struct {
u8 enabled:1;
u8 qdep;
} ats; /* ATS state */
struct device *dev; /* it's NULL for PCIe-to-PCI bridge */
struct intel_iommu *iommu; /* IOMMU used by this device */
struct dmar_domain *domain; /* pointer to domain */
@@ -1391,19 +1395,26 @@ iommu_support_dev_iotlb (struct dmar_domain *domain, struct intel_iommu *iommu,
static void iommu_enable_dev_iotlb(struct device_domain_info *info)
{
struct pci_dev *pdev;
if (!info || !dev_is_pci(info->dev))
return;
pci_enable_ats(to_pci_dev(info->dev), VTD_PAGE_SHIFT);
pdev = to_pci_dev(info->dev);
if (pci_enable_ats(pdev, VTD_PAGE_SHIFT))
return;
info->ats.enabled = 1;
info->ats.qdep = pci_ats_queue_depth(pdev);
}
static void iommu_disable_dev_iotlb(struct device_domain_info *info)
{
if (!info->dev || !dev_is_pci(info->dev) ||
!pci_ats_enabled(to_pci_dev(info->dev)))
if (!info->ats.enabled)
return;
pci_disable_ats(to_pci_dev(info->dev));
info->ats.enabled = 0;
}
static void iommu_flush_dev_iotlb(struct dmar_domain *domain,
@@ -1415,16 +1426,11 @@ static void iommu_flush_dev_iotlb(struct dmar_domain *domain,
spin_lock_irqsave(&device_domain_lock, flags);
list_for_each_entry(info, &domain->devices, link) {
struct pci_dev *pdev;
if (!info->dev || !dev_is_pci(info->dev))
continue;
pdev = to_pci_dev(info->dev);
if (!pci_ats_enabled(pdev))
if (!info->ats.enabled)
continue;
sid = info->bus << 8 | info->devfn;
qdep = pci_ats_queue_depth(pdev);
qdep = info->ats.qdep;
qi_flush_dev_iotlb(info->iommu, sid, qdep, addr, mask);
}
spin_unlock_irqrestore(&device_domain_lock, flags);
@@ -2275,6 +2281,8 @@ static struct dmar_domain *dmar_insert_dev_info(struct intel_iommu *iommu,
info->bus = bus;
info->devfn = devfn;
info->ats.enabled = 0;
info->ats.qdep = 0;
info->dev = dev;
info->domain = domain;
info->iommu = iommu;