diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_device.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_device.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index 248bce86af5..c8ea050c8fa 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -1123,7 +1123,19 @@ static void radeon_check_arguments(struct radeon_device *rdev) /* defines number of bits in page table versus page directory, * a page is 4KB so we have 12 bits offset, minimum 9 bits in the * page table and the remaining bits are in the page directory */ - if (radeon_vm_block_size < 9) { + if (radeon_vm_block_size == -1) { + + /* Total bits covered by PD + PTs */ + unsigned bits = ilog2(radeon_vm_size) + 17; + + /* Make sure the PD is 4K in size up to 8GB address space. + Above that split equal between PD and PTs */ + if (radeon_vm_size <= 8) + radeon_vm_block_size = bits - 9; + else + radeon_vm_block_size = (bits + 3) / 2; + + } else if (radeon_vm_block_size < 9) { dev_warn(rdev->dev, "VM page table size (%d) too small\n", radeon_vm_block_size); radeon_vm_block_size = 9; |