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authorAlex Williamson <alex.williamson@redhat.com>2016-05-16 23:12:02 +0300
committerBjorn Helgaas <bhelgaas@google.com>2016-05-16 23:12:02 +0300
commit92efb1bd9bcbdf83cc0e6cfead752d0c82f63677 (patch)
treec93500e8f364189e7ebf0222ac701672531bfdad /include/linux
parentc20e128030caf0537d5e906753eac1c28fefdb75 (diff)
downloadlinux-92efb1bd9bcbdf83cc0e6cfead752d0c82f63677.tar.xz
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>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/ioport.h4
1 files changed, 4 insertions, 0 deletions
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