winsys/radeon: add an interface for contexts

Same idea as in libdrm_amdgpu.

A command stream can only be created for a specific context and it's always
submitted to that context.

This will mainly be used by amdgpu and it's required by the GPU reset status
query too.
(radeon only has a basic version of the query and thus doesn't need this)

Reviewed-by: Christian König <[email protected]>

2 files changed, 9 insertions, 1 deletions

diff --git a/src/gallium/drivers/r300/r300_context.c b/src/gallium/drivers/r300/r300_context.c
index c35aa3b24aa..8c24ad6d98a 100644
--- a/src/gallium/drivers/r300/r300_context.c
+++ b/src/gallium/drivers/r300/r300_context.c
@@ -94,6 +94,8 @@ static void r300_destroy_context(struct pipe_context* context)
 
     if (r300->cs)
         r300->rws->cs_destroy(r300->cs);
+    if (r300->ctx)
+        r300->rws->ctx_destroy(r300->ctx);
 
     rc_destroy_regalloc_state(&r300->fs_regalloc_state);
 
@@ -382,7 +384,11 @@ struct pipe_context* r300_create_context(struct pipe_screen* screen,
                      sizeof(struct pipe_transfer), 64,
                      UTIL_SLAB_SINGLETHREADED);
 
-    r300->cs = rws->cs_create(rws, RING_GFX, r300_flush_callback, r300, NULL);
+    r300->ctx = rws->ctx_create(rws);
+    if (!r300->ctx)
+        goto fail;
+
+    r300->cs = rws->cs_create(r300->ctx, RING_GFX, r300_flush_callback, r300, NULL);
     if (r300->cs == NULL)
         goto fail;
 
diff --git a/src/gallium/drivers/r300/r300_context.h b/src/gallium/drivers/r300/r300_context.h
index 5a58500b074..18ae11a3a24 100644
--- a/src/gallium/drivers/r300/r300_context.h
+++ b/src/gallium/drivers/r300/r300_context.h
@@ -449,6 +449,8 @@ struct r300_context {
 
     /* The interface to the windowing system, etc. */
     struct radeon_winsys *rws;
+    /* The submission context. */
+    struct radeon_winsys_ctx *ctx;
     /* The command stream. */
     struct radeon_winsys_cs *cs;
     /* Screen. */