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Based on some BIOS configuration (GGC register in host bridge, bit 1),

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IGP may declare subclass as either VGA-compatible, or non-VGA.  The
difference is that in the later case, IGP does not claim VGA cycles.
Other than that, the device functions normally, and agp_i810 should
attach to it.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2014-11-11 12:52:45 +00:00
parent a41f4046f5
commit d6fe56e5d7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=274378
1 changed files with 2 additions and 1 deletions
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3
sys/dev/agp/agp_i810.c
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@ -749,7 +749,8 @@ agp_i810_match(device_t dev)
int i, devid;
if (pci_get_class(dev) != PCIC_DISPLAY
|| pci_get_subclass(dev) != PCIS_DISPLAY_VGA)
|| (pci_get_subclass(dev) != PCIS_DISPLAY_VGA &&
pci_get_subclass(dev) != PCIS_DISPLAY_OTHER))
return (NULL);
devid = pci_get_devid(dev);