char/agp/amd64-agp.c

116  * Get the current Aperture size from the x86-64.
243 /* Some basic sanity checks for the aperture. */
249 	/* Request the Aperture. This catches cases when someone else  in agp_aperture_valid()
255 	    !(aperture_resource = request_mem_region(aper, size, "aperture"))) {  in agp_aperture_valid()
256 		printk(KERN_ERR PFX "Aperture conflicts with PCI mapping.\n");  in agp_aperture_valid()
263  * W*s centric BIOS sometimes only set up the aperture in the AGP
265  * in aperture.c, but when IOMMU is not enabled or we run
267  * Unfortunately it is impossible to fix the aperture here because it's too late
305 		dev_info(&agp->dev, "aperture size %u MB is not right, using settings from NB\n",  in fix_northbridge()
315 	dev_info(&agp->dev, "aperture from AGP @ %Lx size %u MB\n",  in fix_northbridge()
340 			dev_err(&dev->dev, "no usable aperture found\n");  in cache_nbs()
343 			dev_err(&dev->dev, "consider rebooting with iommu=memaper=2 to get a good aperture\n");  in cache_nbs()
418 	/* if x86-64 aperture base is beyond 4G, exit here */  in uli_agp_init()
486 	/* if x86-64 aperture base is beyond 4G, exit here */  in nforce3_agp_init()
488 		dev_info(&pdev->dev, "aperture base > 4G\n");  in nforce3_agp_init()