radeonsi: remove radeon_winsys::cs_set_preamble

It only does radeon_emit_array and it's not possible to do anything better.

Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23517>

src/gallium/drivers/radeonsi/si_gfx_cs.c

@@ -421,9 +421,9 @@ void si_begin_new_gfx_cs(struct si_context *ctx, bool first_cs)
    if (ctx->cs_preamble_state) {
       struct si_pm4_state *preamble = is_secure ? ctx->cs_preamble_state_tmz :
                                                   ctx->cs_preamble_state;
-      ctx->ws->cs_set_preamble(&ctx->gfx_cs, preamble->pm4, preamble->ndw,
-                               preamble != ctx->last_preamble);
-      ctx->last_preamble = preamble;
+      radeon_begin(&ctx->gfx_cs);
+      radeon_emit_array(preamble->pm4, preamble->ndw);
+      radeon_end();
    }
 
    if (!ctx->has_graphics) {

src/gallium/drivers/radeonsi/si_pipe.h

@@ -1038,7 +1038,6 @@ struct si_context {
    struct pipe_scissor_state window_rectangles[4];
 
    /* Precomputed states. */
-   struct si_pm4_state *last_preamble;
    struct si_pm4_state *cs_preamble_state;
    struct si_pm4_state *cs_preamble_state_tmz;
    uint16_t gs_ring_state_dw_offset;

src/gallium/drivers/radeonsi/si_state_shaders.cpp

@@ -3876,7 +3876,6 @@ bool si_update_gs_ring_buffers(struct si_context *sctx)
    }
 
    /* Flush the context to re-emit both cs_preamble states. */
-   sctx->last_preamble = NULL; /* flag that the preamble has changed */
    sctx->initial_gfx_cs_size = 0; /* force flush */
    si_flush_gfx_cs(sctx, RADEON_FLUSH_ASYNC_START_NEXT_GFX_IB_NOW, NULL);
 
@@ -4143,7 +4142,6 @@ void si_init_tess_factor_ring(struct si_context *sctx)
    /* Flush the context to re-emit the cs_preamble state.
     * This is done only once in a lifetime of a context.
     */
-   sctx->last_preamble = NULL; /* flag that the preamble has changed */
    sctx->initial_gfx_cs_size = 0; /* force flush */
    si_flush_gfx_cs(sctx, RADEON_FLUSH_ASYNC_START_NEXT_GFX_IB_NOW, NULL);
 }

src/gallium/include/winsys/radeon_winsys.h

@@ -526,19 +526,6 @@ struct radeon_winsys {
                                    struct pipe_fence_handle **fence),
                      void *flush_ctx, bool allow_context_lost);
 
-   /**
-    * Set or change the CS preamble, which is a sequence of packets that is executed before
-    * the command buffer. If the winsys doesn't support preambles, the packets are inserted
-    * into the command buffer.
-    *
-    * \param cs               Command stream
-    * \param preamble_ib      Preamble IB for the context.
-    * \param preamble_num_dw  Number of dwords in the preamble IB.
-    * \param preamble_changed Whether the preamble changed or is the same as the last one.
-    */
-   void (*cs_set_preamble)(struct radeon_cmdbuf *cs, const uint32_t *preamble_ib,
-                           unsigned preamble_num_dw, bool preamble_changed);
-
    /**
     * Set up and enable mid command buffer preemption for the command stream.
     *

src/gallium/winsys/amdgpu/drm/amdgpu_cs.c

@@ -1114,13 +1114,6 @@ amdgpu_cs_create(struct radeon_cmdbuf *rcs,
    return true;
 }
 
-static void amdgpu_cs_set_preamble(struct radeon_cmdbuf *cs, const uint32_t *preamble_ib,
-                                   unsigned preamble_num_dw, bool preamble_changed)
-{
-   /* TODO: implement this properly */
-   radeon_emit_array(cs, preamble_ib, preamble_num_dw);
-}
-
 static bool
 amdgpu_cs_setup_preemption(struct radeon_cmdbuf *rcs, const uint32_t *preamble_ib,
                            unsigned preamble_num_dw)
@@ -1965,7 +1958,6 @@ void amdgpu_cs_init_functions(struct amdgpu_screen_winsys *ws)
    ws->base.ctx_destroy = amdgpu_ctx_destroy;
    ws->base.ctx_query_reset_status = amdgpu_ctx_query_reset_status;
    ws->base.cs_create = amdgpu_cs_create;
-   ws->base.cs_set_preamble = amdgpu_cs_set_preamble;
    ws->base.cs_setup_preemption = amdgpu_cs_setup_preemption;
    ws->base.cs_destroy = amdgpu_cs_destroy;
    ws->base.cs_add_buffer = amdgpu_cs_add_buffer;

src/gallium/winsys/radeon/drm/radeon_drm_cs.c

@@ -845,7 +845,6 @@ void radeon_drm_cs_init_functions(struct radeon_drm_winsys *ws)
    ws->base.ctx_destroy = radeon_drm_ctx_destroy;
    ws->base.ctx_query_reset_status = radeon_drm_ctx_query_reset_status;
    ws->base.cs_create = radeon_drm_cs_create;
-   ws->base.cs_set_preamble = radeon_drm_cs_set_preamble;
    ws->base.cs_destroy = radeon_drm_cs_destroy;
    ws->base.cs_add_buffer = radeon_drm_cs_add_buffer;
    ws->base.cs_lookup_buffer = radeon_drm_cs_lookup_buffer;