[SeaBIOS] [PATCH 06/12] pciinit: bridges can have two regions too
Alexey Korolev
alexey.korolev at endace.com
Tue Apr 24 08:18:24 CEST 2012
Patch takes into account PCI bar and ROM regions of PCI bridges
Original patch by: Gerd Hoffmann <kraxel at redhat.com>
Signed-off-by: Kevin O'Connor <kevin at koconnor.net>
Signed-off-by: Alexey Korolev <alexey.korolev at endace.com>
---
src/pci.h | 1 +
src/pciinit.c | 8 +++++---
2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/src/pci.h b/src/pci.h
index 5598100..6be838c 100644
--- a/src/pci.h
+++ b/src/pci.h
@@ -5,6 +5,7 @@
#define PCI_ROM_SLOT 6
#define PCI_NUM_REGIONS 7
+#define PCI_BRIDGE_NUM_REGIONS 2
static inline u8 pci_bdf_to_bus(u16 bdf) {
return bdf >> 8;
diff --git a/src/pciinit.c b/src/pciinit.c
index 2bd4426..9b521e3 100644
--- a/src/pciinit.c
+++ b/src/pciinit.c
@@ -370,13 +370,15 @@ static int pci_bios_check_devices(struct pci_bus *busses)
// Calculate resources needed for regular (non-bus) devices.
struct pci_device *pci;
foreachpci(pci) {
- if (pci->class == PCI_CLASS_BRIDGE_PCI) {
+ if (pci->class == PCI_CLASS_BRIDGE_PCI)
busses[pci->secondary_bus].bus_dev = pci;
- continue;
- }
+
struct pci_bus *bus = &busses[pci_bdf_to_bus(pci->bdf)];
int i;
for (i = 0; i < PCI_NUM_REGIONS; i++) {
+ if ((pci->class == PCI_CLASS_BRIDGE_PCI) &&
+ (i >= PCI_BRIDGE_NUM_REGIONS && i < PCI_ROM_SLOT))
+ continue;
u32 val, size;
pci_bios_get_bar(pci, i, &val, &size);
if (val == 0)
--
1.7.5.4
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