pci: add domain identifier
- Add identifier for PCI domain.
- The field is declared as "int"; refer Linux source:
include/asm-x86_64/pci.h
- Legacy domain field used to be 16-bits.
Signed-off-by: Aditya Basu <mitthu@google.com>
Signed-off-by: Barret Rhoden <brho@cs.berkeley.edu>
diff --git a/kern/arch/x86/pci.c b/kern/arch/x86/pci.c
index ed90424..600cdab 100644
--- a/kern/arch/x86/pci.c
+++ b/kern/arch/x86/pci.c
@@ -202,7 +202,7 @@
{
physaddr_t paddr;
- paddr = acpi_pci_get_mmio_cfg_addr(0 /* segment for legacy PCI enum*/,
+ paddr = acpi_pci_get_mmio_cfg_addr(pcidev->domain,
pcidev->bus, pcidev->dev,
pcidev->func);
if (!paddr)
@@ -243,6 +243,9 @@
/* we don't need to lock it til we post the
* pcidev to the list*/
spinlock_init_irqsave(&pcidev->lock);
+ /* we only discover domain 0 during legacy
+ * PCI enumeration */
+ pcidev->domain = 0;
pcidev->bus = i;
pcidev->dev = j;
pcidev->func = k;
diff --git a/kern/arch/x86/pci.h b/kern/arch/x86/pci.h
index 55bfb93..9c2ab71 100644
--- a/kern/arch/x86/pci.h
+++ b/kern/arch/x86/pci.h
@@ -175,6 +175,7 @@
void *dev_data; /* device private pointer */
struct device device;
bool in_use; /* prevent double discovery */
+ int domain; /* legacy size was 16-bits */
uint8_t bus;
uint8_t dev;
uint8_t func;
