diff options
| author | Keith Busch <keith.busch@intel.com> | 2016-09-13 18:05:40 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2016-09-23 16:41:08 +0300 |
| commit | 3161832d58c7f3bf8b190a2887086be0932d8dd3 (patch) | |
| tree | 2d310a553c2c47d16dd32d275324f669168a4836 /arch/x86/include | |
| parent | 576243b3f9eaa47ab568ac49574b3a095c2365f1 (diff) | |
| download | linux-3161832d58c7f3bf8b190a2887086be0932d8dd3.tar.xz | |
x86/PCI: VMD: Request userspace control of PCIe hotplug indicators
Add set_dev_domain_options() to set PCI domain-specific options as devices
are added. The first usage is to request exclusive userspace control of
PCIe hotplug indicators in VMD domains.
Devices in a VMD domain use PCIe hotplug Attention and Power Indicators in
a non-standard way; tell pciehp to ignore the indicators so userspace can
control them via the sysfs "attention" file.
To determine whether a bus is within a VMD domain, add a bool to the
pci_sysdata structure that the VMD driver sets during initialization.
[bhelgaas: changelog]
Requested-by: Kapil Karkra <kapil.karkra@intel.com>
Tested-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/pci.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h index 9ab7507ca1c2..1411dbed5e5e 100644 --- a/arch/x86/include/asm/pci.h +++ b/arch/x86/include/asm/pci.h @@ -23,6 +23,9 @@ struct pci_sysdata { #ifdef CONFIG_PCI_MSI_IRQ_DOMAIN void *fwnode; /* IRQ domain for MSI assignment */ #endif +#if IS_ENABLED(CONFIG_VMD) + bool vmd_domain; /* True if in Intel VMD domain */ +#endif }; extern int pci_routeirq; @@ -56,6 +59,17 @@ static inline void *_pci_root_bus_fwnode(struct pci_bus *bus) #define pci_root_bus_fwnode _pci_root_bus_fwnode #endif +static inline bool is_vmd(struct pci_bus *bus) +{ +#if IS_ENABLED(CONFIG_VMD) + struct pci_sysdata *sd = bus->sysdata; + + return sd->vmd_domain; +#else + return false; +#endif +} + /* Can be used to override the logic in pci_scan_bus for skipping already-configured bus numbers - to be used for buggy BIOSes or architectures with incomplete PCI setup by the loader */ |