diff options
Diffstat (limited to 'linux-core/drm_vm.c')
| -rw-r--r-- | linux-core/drm_vm.c | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/linux-core/drm_vm.c b/linux-core/drm_vm.c index 43ef500a..ce66f908 100644 --- a/linux-core/drm_vm.c +++ b/linux-core/drm_vm.c @@ -60,7 +60,7 @@ struct page *DRM(vm_nopage)(struct vm_area_struct *vma, unsigned long address, int write_access) { -#if defined(__alpha__) && __REALLY_HAVE_AGP +#if __REALLY_HAVE_AGP drm_file_t *priv = vma->vm_file->private_data; drm_device_t *dev = priv->dev; drm_map_t *map = NULL; @@ -70,6 +70,9 @@ struct page *DRM(vm_nopage)(struct vm_area_struct *vma, /* * Find the right map */ + + if(!dev->agp->cant_use_aperture) goto vm_nopage_error; + list_for_each(list, &dev->maplist->head) { r_list = (drm_map_list_t *)list; map = r_list->map; @@ -83,10 +86,12 @@ struct page *DRM(vm_nopage)(struct vm_area_struct *vma, struct drm_agp_mem *agpmem; struct page *page; +#if __alpha__ /* - * Make it a bus-relative address + * Adjust to a bus-relative address */ baddr -= dev->hose->mem_space->start; +#endif /* * It's AGP memory - find the real physical page to map @@ -97,27 +102,24 @@ struct page *DRM(vm_nopage)(struct vm_area_struct *vma, break; } - if (!agpmem) { - /* - * Oops - no memory found - */ - return NOPAGE_SIGBUS; /* couldn't find it */ - } + if (!agpmem) goto vm_nopage_error; /* * Get the page, inc the use count, and return it */ offset = (baddr - agpmem->bound) >> PAGE_SHIFT; - agpmem->memory->memory[offset] &= ~1UL; /* HACK */ + agpmem->memory->memory[offset] &= dev->agp->page_mask; page = virt_to_page(__va(agpmem->memory->memory[offset])); -#if 0 - DRM_ERROR("baddr = 0x%lx page = 0x%lx, offset = 0x%lx\n", - baddr, __va(agpmem->memory->memory[offset]), offset); -#endif get_page(page); + + DRM_DEBUG("baddr = 0x%lx page = 0x%p, offset = 0x%lx\n", + baddr, __va(agpmem->memory->memory[offset]), offset); + return page; } -#endif +vm_nopage_error: +#endif /* __REALLY_HAVE_AGP */ + return NOPAGE_SIGBUS; /* Disallow mremap */ } |