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pci: Search for the first Intel GPU, rather than assume a fixed slot

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Everywhere else we search for a match based on an Intel display
device, so if the quick check of the fixed slot fails, fallback to
walking the PCI bus looking for a match.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2012-12-06 12:16:12 +00:00
parent 51f08301ab
commit 50fdf32e46
1 changed files with 20 additions and 1 deletions
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21
lib/intel_pci.c
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@ -54,8 +54,27 @@ intel_get_pci_device(void)
exit(1); exit(1);
} }
/* Grab the graphics card */ /* Grab the graphics card. Try the canonical slot first, then
* walk the entire PCI bus for a matching device. */
pci_dev = pci_device_find_by_slot(0, 0, 2, 0); pci_dev = pci_device_find_by_slot(0, 0, 2, 0);
if (pci_dev == NULL || pci_dev->vendor_id != 0x8086) {
struct pci_device_iterator *iter;
struct pci_id_match match;
match.vendor_id = 0x8086; /* Intel */
match.device_id = PCI_MATCH_ANY;
match.subvendor_id = PCI_MATCH_ANY;
match.subdevice_id = PCI_MATCH_ANY;
match.device_class = 0x3 << 16;
match.device_class_mask = 0xff << 16;
match.match_data = 0;
iter = pci_id_match_iterator_create(&match);
pci_dev = pci_device_next(iter);
pci_iterator_destroy(iter);
}
if (pci_dev == NULL) if (pci_dev == NULL)
errx(1, "Couldn't find graphics card"); errx(1, "Couldn't find graphics card");