diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/si.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/si.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index 3319a9a53d8e..c76825ffa37f 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -2789,6 +2789,47 @@ void si_vm_fini(struct radeon_device *rdev) { } +/** + * si_vm_set_page - update the page tables using the CP + * + * @rdev: radeon_device pointer + * @pe: addr of the page entry + * @addr: dst addr to write into pe + * @count: number of page entries to update + * @incr: increase next addr by incr bytes + * @flags: access flags + * + * Update the page tables using the CP (cayman-si). + */ +void si_vm_set_page(struct radeon_device *rdev, uint64_t pe, + uint64_t addr, unsigned count, + uint32_t incr, uint32_t flags) +{ + struct radeon_ring *ring = &rdev->ring[rdev->asic->vm.pt_ring_index]; + uint32_t r600_flags = cayman_vm_page_flags(rdev, flags); + int i; + uint64_t value; + + radeon_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 2 + count * 2)); + radeon_ring_write(ring, (WRITE_DATA_ENGINE_SEL(0) | + WRITE_DATA_DST_SEL(1))); + radeon_ring_write(ring, pe); + radeon_ring_write(ring, upper_32_bits(pe)); + for (i = 0; i < count; ++i) { + if (flags & RADEON_VM_PAGE_SYSTEM) { + value = radeon_vm_map_gart(rdev, addr); + value &= 0xFFFFFFFFFFFFF000ULL; + } else if (flags & RADEON_VM_PAGE_VALID) + value = addr; + else + value = 0; + addr += incr; + value |= r600_flags; + radeon_ring_write(ring, value); + radeon_ring_write(ring, upper_32_bits(value)); + } +} + void si_vm_flush(struct radeon_device *rdev, int ridx, struct radeon_vm *vm) { struct radeon_ring *ring = &rdev->ring[ridx]; |