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PCI: Identify Enhanced Allocation (EA) BAR Equivalent resources in sysfs

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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>
This commit is contained in:
Alex Williamson 2016-05-16 15:12:02 -05:00 • committed by Bjorn Helgaas
parent c20e128030
commit 92efb1bd9b
2 changed files with 5 additions and 1 deletions
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4
include/linux/ioport.h
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@ -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