diff options
| author | Dave Airlie <airlied@redhat.com> | 2016-04-22 03:06:23 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-05-05 03:30:16 +0300 |
| commit | 84ef4c12ee7b7a080364ad9168ffcf5fa6df4ecf (patch) | |
| tree | 724e85194b41da72029333988df985e30f2d333e /drivers/gpu/drm/radeon/evergreen_cs.c | |
| parent | adcec288bc066065310a6668755c673264ee12d9 (diff) | |
| download | linux-84ef4c12ee7b7a080364ad9168ffcf5fa6df4ecf.tar.xz | |
drm/radeon: add cayman VM support for append packet.
This adds support for SET_APPEND_CNT packet3 to the VM paths.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/evergreen_cs.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/evergreen_cs.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen_cs.c b/drivers/gpu/drm/radeon/evergreen_cs.c index 18ddd752b64b..0d3f744de35a 100644 --- a/drivers/gpu/drm/radeon/evergreen_cs.c +++ b/drivers/gpu/drm/radeon/evergreen_cs.c @@ -3483,6 +3483,27 @@ static int evergreen_vm_packet3_check(struct radeon_device *rdev, } } break; + case PACKET3_SET_APPEND_CNT: { + uint32_t areg; + uint32_t allowed_reg_base; + + if (pkt->count != 2) { + DRM_ERROR("bad SET_APPEND_CNT (invalid count)\n"); + return -EINVAL; + } + + allowed_reg_base = GDS_APPEND_COUNT_0; + allowed_reg_base -= PACKET3_SET_CONTEXT_REG_START; + allowed_reg_base >>= 2; + + areg = idx_value >> 16; + if (areg < allowed_reg_base || areg > (allowed_reg_base + 11)) { + DRM_ERROR("forbidden register for append cnt 0x%08x at %d\n", + areg, idx); + return -EINVAL; + } + break; + } default: return -EINVAL; } |