gallium/radeon: use cs_check_space throughout

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

src/gallium/drivers/r300/r300_blit.c

@@ -382,7 +382,7 @@ static void r300_clear(struct pipe_context* pipe,
             r300_get_num_cs_end_dwords(r300);
 
         /* Reserve CS space. */
-        if (dwords > (r300->cs->max_dw - r300->cs->cdw)) {
+        if (!r300->rws->cs_check_space(r300->cs, dwords)) {
             r300_flush(&r300->context, RADEON_FLUSH_ASYNC, NULL);
         }
 

src/gallium/drivers/r300/r300_render.c

@@ -215,7 +215,7 @@ static boolean r300_reserve_cs_dwords(struct r300_context *r300,
     cs_dwords += r300_get_num_cs_end_dwords(r300);
 
     /* Reserve requested CS space. */
-    if (cs_dwords > (r300->cs->max_dw - r300->cs->cdw)) {
+    if (!r300->rws->cs_check_space(r300->cs, cs_dwords)) {
         r300_flush(&r300->context, RADEON_FLUSH_ASYNC, NULL);
         flushed = TRUE;
     }

src/gallium/drivers/r600/r600_hw_context.c

@@ -47,9 +47,7 @@ void r600_need_cs_space(struct r600_context *ctx, unsigned num_dw,
 	ctx->b.gtt = 0;
 	ctx->b.vram = 0;
 
-	/* The number of dwords we already used in the CS so far. */
-	num_dw += ctx->b.gfx.cs->cdw;
-
+	/* Check available space in CS. */
 	if (count_draw_in) {
 		uint64_t mask;
 
@@ -82,7 +80,7 @@ void r600_need_cs_space(struct r600_context *ctx, unsigned num_dw,
 	num_dw += 10;
 
 	/* Flush if there's not enough space. */
-	if (num_dw > ctx->b.gfx.cs->max_dw) {
+	if (!ctx->b.ws->cs_check_space(ctx->b.gfx.cs, num_dw)) {
 		ctx->b.gfx.flush(ctx, RADEON_FLUSH_ASYNC, NULL);
 	}
 }

src/gallium/drivers/radeon/r600_pipe_common.c

@@ -168,7 +168,7 @@ void r600_need_dma_space(struct r600_common_context *ctx, unsigned num_dw,
 	/* Flush if there's not enough space, or if the memory usage per IB
 	 * is too large.
 	 */
-	if ((num_dw + ctx->dma.cs->cdw) > ctx->dma.cs->max_dw ||
+	if (!ctx->ws->cs_check_space(ctx->dma.cs, num_dw) ||
 	    !ctx->ws->cs_memory_below_limit(ctx->dma.cs, vram, gtt)) {
 		ctx->dma.flush(ctx, RADEON_FLUSH_ASYNC, NULL);
 		assert((num_dw + ctx->dma.cs->cdw) <= ctx->dma.cs->max_dw);

src/gallium/drivers/radeonsi/si_hw_context.c

@@ -84,9 +84,8 @@ void si_need_cs_space(struct si_context *ctx)
 	/* If the CS is sufficiently large, don't count the space needed
 	 * and just flush if there is not enough space left.
 	 */
-	if (unlikely(cs->cdw > cs->max_dw - 2048 ||
-                     (ce_ib && ce_ib->max_dw - ce_ib->cdw <
-                      si_ce_needed_cs_space())))
+	if (!ctx->b.ws->cs_check_space(cs, 2048) ||
+	    (ce_ib && !ctx->b.ws->cs_check_space(ce_ib, si_ce_needed_cs_space())))
 		ctx->b.gfx.flush(ctx, RADEON_FLUSH_ASYNC, NULL);
 }