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| author | Brad Volkin <bradley.d.volkin@intel.com> | 2014-02-18 10:15:55 -0800 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-04-01 22:58:14 +0200 |
| commit | 114d4f700878405a9fd65a6ade4f981514b82919 (patch) | |
| tree | 19aee24e789cc422d103f588a7e65518aef7ecea /drivers/gpu/drm/i915/i915_cmd_parser.c | |
| parent | d4d4803513af986a5280d810e093cd2bc2e71d88 (diff) | |
| download | blackbird-obmc-linux-114d4f700878405a9fd65a6ade4f981514b82919.tar.gz blackbird-obmc-linux-114d4f700878405a9fd65a6ade4f981514b82919.zip | |
drm/i915: Reject commands that would store to global HWS page
PIPE_CONTROL and MI_FLUSH_DW have bits that would write to the
hardware status page. The driver stores request tracking info
there, so don't let userspace overwrite it.
v2: trailing comma fix, rebased
Signed-off-by: Brad Volkin <bradley.d.volkin@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_cmd_parser.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_cmd_parser.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_cmd_parser.c b/drivers/gpu/drm/i915/i915_cmd_parser.c index bf4ffd8826ba..a8f00dbc0dde 100644 --- a/drivers/gpu/drm/i915/i915_cmd_parser.c +++ b/drivers/gpu/drm/i915/i915_cmd_parser.c @@ -193,7 +193,8 @@ static const struct drm_i915_cmd_descriptor render_cmds[] = { }, { .offset = 1, - .mask = PIPE_CONTROL_GLOBAL_GTT_IVB, + .mask = (PIPE_CONTROL_GLOBAL_GTT_IVB | + PIPE_CONTROL_STORE_DATA_INDEX), .expected = 0, .condition_offset = 1, .condition_mask = PIPE_CONTROL_POST_SYNC_OP_MASK, @@ -242,6 +243,13 @@ static const struct drm_i915_cmd_descriptor video_cmds[] = { .expected = 0, .condition_offset = 0, .condition_mask = MI_FLUSH_DW_OP_MASK, + }, + { + .offset = 0, + .mask = MI_FLUSH_DW_STORE_INDEX, + .expected = 0, + .condition_offset = 0, + .condition_mask = MI_FLUSH_DW_OP_MASK, }}, ), CMD( MI_CONDITIONAL_BATCH_BUFFER_END, SMI, !F, 0xFF, B, .bits = {{ @@ -278,6 +286,13 @@ static const struct drm_i915_cmd_descriptor vecs_cmds[] = { .expected = 0, .condition_offset = 0, .condition_mask = MI_FLUSH_DW_OP_MASK, + }, + { + .offset = 0, + .mask = MI_FLUSH_DW_STORE_INDEX, + .expected = 0, + .condition_offset = 0, + .condition_mask = MI_FLUSH_DW_OP_MASK, }}, ), CMD( MI_CONDITIONAL_BATCH_BUFFER_END, SMI, !F, 0xFF, B, .bits = {{ @@ -308,6 +323,13 @@ static const struct drm_i915_cmd_descriptor blt_cmds[] = { .expected = 0, .condition_offset = 0, .condition_mask = MI_FLUSH_DW_OP_MASK, + }, + { + .offset = 0, + .mask = MI_FLUSH_DW_STORE_INDEX, + .expected = 0, + .condition_offset = 0, + .condition_mask = MI_FLUSH_DW_OP_MASK, }}, ), CMD( COLOR_BLT, S2D, !F, 0x3F, S ), CMD( SRC_COPY_BLT, S2D, !F, 0x3F, S ), |
