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drm: add _DRM_CONSISTENT map type

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Added a new DRM map type _DRM_CONSISTENT for consistent PCI memory. It
uses drm_pci_alloc/free for allocating/freeing the memory.

From: Felix Kuhling <fxkuehl@gmx.de>
Signed-off-by: David Airlie <airlied@linux.ie>
This commit is contained in:
Dave Airlie
2005-07-10 14:34:13 +10:00
committed by Dave Airlie
parent f179bc77d0
commit 2d0f9eaff8
5 changed files with 40 additions and 7 deletions
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7
drivers/char/drm/drm_vm.c
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@@ -228,6 +228,10 @@ static void drm_vm_shm_close(struct vm_area_struct *vma)
case _DRM_AGP:
case _DRM_SCATTER_GATHER:
break;
case _DRM_CONSISTENT:
drm_pci_free(dev, map->size, map->handle,
map->offset);
break;
}
drm_free(map, sizeof(*map), DRM_MEM_MAPS);
}
@@ -645,6 +649,9 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
vma->vm_ops = &drm_vm_ops;
break;
case _DRM_SHM:
case _DRM_CONSISTENT:
/* Consistent memory is really like shared memory. It's only
* allocate in a different way */
vma->vm_ops = &drm_vm_shm_ops;
vma->vm_private_data = (void *)map;
/* Don't let this area swap. Change when