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author | Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> | 2010-03-17 00:47:56 +0000 |
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committer | Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> | 2010-03-17 00:47:56 +0000 |
commit | 295b3af7671b8de88670ace7d3197f66c08b7f9b (patch) | |
tree | 58514c2131ee38849dffed49e54537acd7256d9b | |
parent | 6093969529efb5318dbe66678dc72027aabafa05 (diff) | |
download | flashrom-295b3af7671b8de88670ace7d3197f66c08b7f9b.tar.gz flashrom-295b3af7671b8de88670ace7d3197f66c08b7f9b.tar.bz2 flashrom-295b3af7671b8de88670ace7d3197f66c08b7f9b.zip |
PCI device BARs of all types had only bits 1:0 cleared while reading the address
That was correct for IO BARs, but failed to mask bit 3:2 for MEM BARs,
resulting in odd offsets for prefetchable MEM BARs and for 64-bit
capable MEM BARs. Mask the correct number of bits for all types of BARs
and add some debug printing about BAR type.
Corresponding to flashrom svn r946.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
-rw-r--r-- | pcidev.c | 18 |
1 files changed, 17 insertions, 1 deletions
@@ -32,6 +32,7 @@ uint32_t pcidev_validate(struct pci_dev *dev, uint32_t bar, struct pcidev_status *devs) { int i; + /* FIXME: 64 bit memory BARs need a 64 bit addr. */ uint32_t addr; for (i = 0; devs[i].device_name != NULL; i++) { @@ -42,12 +43,27 @@ uint32_t pcidev_validate(struct pci_dev *dev, uint32_t bar, * Don't use dev->base_addr[x] (as value for 'bar'), won't * work on older libpci. */ - addr = pci_read_long(dev, bar) & ~0x03; + addr = pci_read_long(dev, bar); printf("Found \"%s %s\" (%04x:%04x, BDF %02x:%02x.%x).\n", devs[i].vendor_name, devs[i].device_name, dev->vendor_id, dev->device_id, dev->bus, dev->dev, dev->func); + msg_pdbg("Requested BAR is %s", (addr & 0x1) ? "IO" : "MEM"); + if (addr & 0x1) { + /* Mask off IO space indicator and reserved bit. */ + msg_pdbg("\n"); + addr &= ~0x3; + } else { + msg_pdbg(", %sbit, %sprefetchable\n", + ((addr & 0x6) == 0x0) ? "32" : + (((addr & 0x6) == 0x4) ? "64" : "reserved"), + (addr & 0x8) ? "" : "not "); + /* Mask off Mem space indicator, 32/64bit type indicator + * and Prefetchable indicator. + */ + addr &= ~0xf; + } if (devs[i].status == NT) { printf("===\nThis PCI device is UNTESTED. Please " |