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| author | Alex Williamson <alex.williamson@redhat.com> | 2016-05-16 15:12:02 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2016-05-16 15:12:02 -0500 |
| commit | 92efb1bd9bcbdf83cc0e6cfead752d0c82f63677 (patch) | |
| tree | c93500e8f364189e7ebf0222ac701672531bfdad | |
| parent | c20e128030caf0537d5e906753eac1c28fefdb75 (diff) | |
| download | talos-obmc-linux-92efb1bd9bcbdf83cc0e6cfead752d0c82f63677.tar.gz talos-obmc-linux-92efb1bd9bcbdf83cc0e6cfead752d0c82f63677.zip | |
PCI: Identify Enhanced Allocation (EA) BAR Equivalent resources in sysfs
Resource flags are exposed to userspace via the sysfs "resource" file.
lspci reads the sysfs file to determine resource properties.
Add a "BAR Equivalent Indicator" flag so lspci can distinguish between
[virtual] and [enhanced] resources.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Sean O. Stalley <sean.stalley@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| -rw-r--r-- | drivers/pci/pci.c | 2 | ||||
| -rw-r--r-- | include/linux/ioport.h | 4 |
2 files changed, 5 insertions, 1 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 25e0327d4429..7b008c7cac35 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -2228,7 +2228,7 @@ void pci_pm_init(struct pci_dev *dev) static unsigned long pci_ea_flags(struct pci_dev *dev, u8 prop) { - unsigned long flags = IORESOURCE_PCI_FIXED; + unsigned long flags = IORESOURCE_PCI_FIXED | IORESOURCE_PCI_EA_BEI; switch (prop) { case PCI_EA_P_MEM: diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 0b65543dc6cf..6230064d7f95 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -26,6 +26,9 @@ struct resource { /* * IO resources have these defined flags. + * + * PCI devices expose these flags to userspace in the "resource" sysfs file, + * so don't move them. */ #define IORESOURCE_BITS 0x000000ff /* Bus-specific bits */ @@ -110,6 +113,7 @@ struct resource { /* PCI control bits. Shares IORESOURCE_BITS with above PCI ROM. */ #define IORESOURCE_PCI_FIXED (1<<4) /* Do not move resource */ +#define IORESOURCE_PCI_EA_BEI (1<<5) /* BAR Equivalent Indicator */ /* * I/O Resource Descriptors |
