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  /src/sys/dev/pci/
agp_amd.c 264 int vas; local in function:agp_amd_get_aperture
266 vas = (pci_conf_read(sc->as_pc, sc->as_tag, AGP_AMD751_APCTRL) & 0x06);
267 vas >>= 1;
269 * The aperture size is equal to 32M<<vas.
271 return (32*1024*1024) << vas;
277 int vas; local in function:agp_amd_set_aperture
289 vas = ffs(aperture / 32*1024*1024) - 1;
292 reg = (reg & ~0x06) | (vas << 1);

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