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| author | Keith Busch <keith.busch@intel.com> | 2016-09-13 09:05:40 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2016-09-23 08:41:08 -0500 |
| commit | 3161832d58c7f3bf8b190a2887086be0932d8dd3 (patch) | |
| tree | 2d310a553c2c47d16dd32d275324f669168a4836 /arch/x86/pci | |
| parent | 576243b3f9eaa47ab568ac49574b3a095c2365f1 (diff) | |
| download | linux-3161832d58c7f3bf8b190a2887086be0932d8dd3.tar.gz linux-3161832d58c7f3bf8b190a2887086be0932d8dd3.tar.bz2 linux-3161832d58c7f3bf8b190a2887086be0932d8dd3.zip | |
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/pci')
| -rw-r--r-- | arch/x86/pci/common.c | 7 | ||||
| -rw-r--r-- | arch/x86/pci/vmd.c | 1 |
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c index 7b6a9d14c8c0..a4fdfa7dcc1b 100644 --- a/arch/x86/pci/common.c +++ b/arch/x86/pci/common.c @@ -677,6 +677,12 @@ static void set_dma_domain_ops(struct pci_dev *pdev) static void set_dma_domain_ops(struct pci_dev *pdev) {} #endif +static void set_dev_domain_options(struct pci_dev *pdev) +{ + if (is_vmd(pdev->bus)) + pdev->hotplug_user_indicators = 1; +} + int pcibios_add_device(struct pci_dev *dev) { struct setup_data *data; @@ -707,6 +713,7 @@ int pcibios_add_device(struct pci_dev *dev) iounmap(data); } set_dma_domain_ops(dev); + set_dev_domain_options(dev); return 0; } diff --git a/arch/x86/pci/vmd.c b/arch/x86/pci/vmd.c index b814ca675131..a021b7b0eb69 100644 --- a/arch/x86/pci/vmd.c +++ b/arch/x86/pci/vmd.c @@ -596,6 +596,7 @@ static int vmd_enable_domain(struct vmd_dev *vmd) .parent = res, }; + sd->vmd_domain = true; sd->domain = vmd_find_free_domain(); if (sd->domain < 0) return sd->domain; |