diff options
Diffstat (limited to 'linux/drm_vm.h')
| -rw-r--r-- | linux/drm_vm.h | 41 |
1 files changed, 27 insertions, 14 deletions
diff --git a/linux/drm_vm.h b/linux/drm_vm.h index 76a10cf5..59b19da3 100644 --- a/linux/drm_vm.h +++ b/linux/drm_vm.h @@ -108,12 +108,12 @@ struct page *DRM(vm_nopage)(struct vm_area_struct *vma, * Get the page, inc the use count, and return it */ offset = (baddr - agpmem->bound) >> PAGE_SHIFT; - agpmem->memory->memory[offset] &= dev->agp->page_mask; page = virt_to_page(__va(agpmem->memory->memory[offset])); get_page(page); - DRM_DEBUG("baddr = 0x%lx page = 0x%p, offset = 0x%lx\n", - baddr, __va(agpmem->memory->memory[offset]), offset); + DRM_DEBUG("baddr = 0x%lx page = 0x%p, offset = 0x%lx, count=%d\n", + baddr, __va(agpmem->memory->memory[offset]), offset, + atomic_read(&page->count)); return page; } @@ -207,7 +207,7 @@ void DRM(vm_shm_close)(struct vm_area_struct *vma) DRM_DEBUG("mtrr_del = %d\n", retcode); } #endif - DRM(ioremapfree)(map->handle, map->size); + DRM(ioremapfree)(map->handle, map->size, dev); break; case _DRM_SHM: vfree(map->handle); @@ -381,7 +381,16 @@ int DRM(mmap)(struct file *filp, struct vm_area_struct *vma) if ( !priv->authenticated ) return -EACCES; - if (!VM_OFFSET(vma)) return DRM(mmap_dma)(filp, vma); + /* We check for "dma". On Apple's UniNorth, it's valid to have + * the AGP mapped at physical address 0 + * --BenH. + */ + if (!VM_OFFSET(vma) +#if __REALLY_HAVE_AGP + && (!dev->agp || dev->agp->agp_info.device->vendor != PCI_VENDOR_ID_APPLE) +#endif + ) + return DRM(mmap_dma)(filp, vma); /* A sequential search of a linked list is fine here because: 1) there will only be @@ -421,15 +430,19 @@ int DRM(mmap)(struct file *filp, struct vm_area_struct *vma) switch (map->type) { case _DRM_AGP: -#if defined(__alpha__) +#if __REALLY_HAVE_AGP + if (dev->agp->cant_use_aperture) { /* - * On Alpha we can't talk to bus dma address from the - * CPU, so for memory of type DRM_AGP, we'll deal with - * sorting out the real physical pages and mappings - * in nopage() + * On some platforms we can't talk to bus dma address from the CPU, so for + * memory of type DRM_AGP, we'll deal with sorting out the real physical + * pages and mappings in nopage() */ +#if defined(__powerpc__) + pgprot_val(vma->vm_page_prot) |= _PAGE_NO_CACHE; +#endif vma->vm_ops = &DRM(vm_ops); break; + } #endif /* fall through to _DRM_FRAME_BUFFER... */ case _DRM_FRAME_BUFFER: @@ -440,15 +453,15 @@ int DRM(mmap)(struct file *filp, struct vm_area_struct *vma) pgprot_val(vma->vm_page_prot) |= _PAGE_PCD; pgprot_val(vma->vm_page_prot) &= ~_PAGE_PWT; } -#elif defined(__ia64__) - if (map->type != _DRM_AGP) - vma->vm_page_prot = - pgprot_writecombine(vma->vm_page_prot); #elif defined(__powerpc__) pgprot_val(vma->vm_page_prot) |= _PAGE_NO_CACHE | _PAGE_GUARDED; #endif vma->vm_flags |= VM_IO; /* not in core dump */ } +#if defined(__ia64__) + if (map->type != _DRM_AGP) + vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); +#endif offset = DRIVER_GET_REG_OFS(); #ifdef __sparc__ if (io_remap_page_range(DRM_RPR_ARG(vma) vma->vm_start, |