drm/i915/guc: Start protecting access to CTB descriptors

[linux-2.6-microblaze.git] / drivers / gpu / drm / i915 / gt / uc / intel_guc_ct.h

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h
index 494a51a..bc52dc4 100644 (file)
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h
@@ -27,12 +27,16 @@ struct intel_guc;
  * record (command transport buffer descriptor) and the actual buffer which
  * holds the commands.
  *
+ * @lock: protects access to the commands buffer and buffer descriptor
  * @desc: pointer to the buffer descriptor
  * @cmds: pointer to the commands buffer
+ * @size: size of the commands buffer
  */
 struct intel_guc_ct_buffer {
+       spinlock_t lock;
        struct guc_ct_buffer_desc *desc;
        u32 *cmds;
+       u32 size;
 };
 
 
@@ -45,8 +49,11 @@ struct intel_guc_ct {
        struct i915_vma *vma;
        bool enabled;
 
-       /* buffers for sending(0) and receiving(1) commands */
-       struct intel_guc_ct_buffer ctbs[2];
+       /* buffers for sending and receiving commands */
+       struct {
+               struct intel_guc_ct_buffer send;
+               struct intel_guc_ct_buffer recv;
+       } ctbs;
 
        struct {
                u32 last_fence; /* last fence used to send request */