diff options
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/cmd_parser.c | 19 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/mmio_context.c | 33 |
2 files changed, 37 insertions, 15 deletions
diff --git a/drivers/gpu/drm/i915/gvt/cmd_parser.c b/drivers/gpu/drm/i915/gvt/cmd_parser.c index 18c45734c7a2..be5c519b3324 100644 --- a/drivers/gpu/drm/i915/gvt/cmd_parser.c +++ b/drivers/gpu/drm/i915/gvt/cmd_parser.c @@ -825,6 +825,21 @@ static int force_nonpriv_reg_handler(struct parser_exec_state *s, return 0; } +static inline bool is_mocs_mmio(unsigned int offset) +{ + return ((offset >= 0xc800) && (offset <= 0xcff8)) || + ((offset >= 0xb020) && (offset <= 0xb0a0)); +} + +static int mocs_cmd_reg_handler(struct parser_exec_state *s, + unsigned int offset, unsigned int index) +{ + if (!is_mocs_mmio(offset)) + return -EINVAL; + vgpu_vreg(s->vgpu, offset) = cmd_val(s, index + 1); + return 0; +} + static int cmd_reg_handler(struct parser_exec_state *s, unsigned int offset, unsigned int index, char *cmd) { @@ -848,6 +863,10 @@ static int cmd_reg_handler(struct parser_exec_state *s, return 0; } + if (is_mocs_mmio(offset) && + mocs_cmd_reg_handler(s, offset, index)) + return -EINVAL; + if (is_force_nonpriv_mmio(offset) && force_nonpriv_reg_handler(s, offset, index)) return -EPERM; diff --git a/drivers/gpu/drm/i915/gvt/mmio_context.c b/drivers/gpu/drm/i915/gvt/mmio_context.c index 5ad72fc0f9e7..06ea3d24e8d0 100644 --- a/drivers/gpu/drm/i915/gvt/mmio_context.c +++ b/drivers/gpu/drm/i915/gvt/mmio_context.c @@ -203,6 +203,8 @@ static void switch_mocs(struct intel_vgpu *pre, struct intel_vgpu *next, { struct drm_i915_private *dev_priv; i915_reg_t offset, l3_offset; + u32 old_v, new_v; + u32 regs[] = { [RCS] = 0xc800, [VCS] = 0xc900, @@ -220,16 +222,17 @@ static void switch_mocs(struct intel_vgpu *pre, struct intel_vgpu *next, for (i = 0; i < 64; i++) { if (pre) - vgpu_vreg(pre, offset) = - I915_READ_FW(offset); + old_v = vgpu_vreg(pre, offset); else - gen9_render_mocs[ring_id][i] = - I915_READ_FW(offset); - + old_v = gen9_render_mocs[ring_id][i] + = I915_READ_FW(offset); if (next) - I915_WRITE_FW(offset, vgpu_vreg(next, offset)); + new_v = vgpu_vreg(next, offset); else - I915_WRITE_FW(offset, gen9_render_mocs[ring_id][i]); + new_v = gen9_render_mocs[ring_id][i]; + + if (old_v != new_v) + I915_WRITE_FW(offset, new_v); offset.reg += 4; } @@ -238,17 +241,17 @@ static void switch_mocs(struct intel_vgpu *pre, struct intel_vgpu *next, l3_offset.reg = 0xb020; for (i = 0; i < 32; i++) { if (pre) - vgpu_vreg(pre, l3_offset) = - I915_READ_FW(l3_offset); + old_v = vgpu_vreg(pre, l3_offset); else - gen9_render_mocs_L3[i] = - I915_READ_FW(l3_offset); + old_v = gen9_render_mocs_L3[i] + = I915_READ_FW(offset); if (next) - I915_WRITE_FW(l3_offset, - vgpu_vreg(next, l3_offset)); + new_v = vgpu_vreg(next, l3_offset); else - I915_WRITE_FW(l3_offset, - gen9_render_mocs_L3[i]); + new_v = gen9_render_mocs_L3[i]; + + if (old_v != new_v) + I915_WRITE_FW(l3_offset, new_v); l3_offset.reg += 4; } |