[Intel-gfx] [PATCH 1/3] tools/null_state_gen: add macro to emit commands with null state

[Mika Kuoppala]

In null/golden context there are multiple state commands where
the actual state is always zero. For more compact batch representation
add a macro which just emits command and the rest of the state as zero.

Signed-off-by: Mika Kuoppala <mika.kuoppala at intel.com>
---
 tools/null_state_gen/intel_batchbuffer.c    | 12 ++++++++++++
 tools/null_state_gen/intel_batchbuffer.h    |  6 +++++-
 tools/null_state_gen/intel_null_state_gen.c | 12 +++++++++++-
 3 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/tools/null_state_gen/intel_batchbuffer.c b/tools/null_state_gen/intel_batchbuffer.c
index 2a0b340..6e86aef 100644
--- a/tools/null_state_gen/intel_batchbuffer.c
+++ b/tools/null_state_gen/intel_batchbuffer.c
@@ -274,3 +274,15 @@ const char *intel_batch_type_as_str(const struct bb_item *item)
 
 	return "UNKNOWN";
 }
+
+void intel_batch_cmd_emit_null(struct intel_batchbuffer *batch, const int cmd, const int len, const char *str)
+{
+	int i;
+
+	assert(len > 1);
+
+	bb_area_emit(batch->cmds, (cmd | (len - 2)), CMD, str);
+
+	for (i = 1; i < len; i++)
+		OUT_BATCH(0);
+}
diff --git a/tools/null_state_gen/intel_batchbuffer.h b/tools/null_state_gen/intel_batchbuffer.h
index e44c5c9..b4eed25 100644
--- a/tools/null_state_gen/intel_batchbuffer.h
+++ b/tools/null_state_gen/intel_batchbuffer.h
@@ -34,7 +34,7 @@
 #include <stdint.h>
 
 #define MAX_RELOCS 64
-#define MAX_ITEMS 4096
+#define MAX_ITEMS 1024
 #define MAX_STRLEN 256
 
 #define ALIGN(x, y) (((x) + (y)-1) & ~((y)-1))
@@ -69,6 +69,7 @@ struct intel_batchbuffer {
 
 struct intel_batchbuffer *intel_batchbuffer_create(void);
 
+#define OUT_CMD(cmd, len) intel_batch_cmd_emit_null(batch, cmd, len, #cmd " " #len)
 #define OUT_BATCH(d) bb_area_emit(batch->cmds, d, CMD, #d)
 #define OUT_BATCH_STATE_OFFSET(d) bb_area_emit(batch->cmds, d, STATE_OFFSET, #d)
 #define OUT_RELOC(batch, read_domain, write_domain, d) bb_area_emit(batch->cmds, d, RELOC, #d)
@@ -81,6 +82,7 @@ uint32_t intel_batch_state_copy(struct intel_batchbuffer *batch, void *d, unsign
 				const char *name);
 uint32_t intel_batch_state_alloc(struct intel_batchbuffer *batch, unsigned bytes, unsigned align,
 				 const char *name);
+uint32_t intel_batch_state_offset(struct intel_batchbuffer *batch, unsigned align);
 
 unsigned intel_batch_num_cmds(struct intel_batchbuffer *batch);
 
@@ -94,4 +96,6 @@ const char *intel_batch_type_as_str(const struct bb_item *item);
 void bb_area_emit(struct bb_area *a, uint32_t dword, item_type type, const char *str);
 void bb_area_emit_offset(struct bb_area *a, unsigned i, uint32_t dword, item_type type, const char *str);
 
+void intel_batch_cmd_emit_null(struct intel_batchbuffer *batch, const int cmd, const int len, const char *str);
+
 #endif
diff --git a/tools/null_state_gen/intel_null_state_gen.c b/tools/null_state_gen/intel_null_state_gen.c
index b337706..a7eb22b 100644
--- a/tools/null_state_gen/intel_null_state_gen.c
+++ b/tools/null_state_gen/intel_null_state_gen.c
@@ -23,6 +23,9 @@ static void print_usage(char *s)
 static int print_state(int gen, struct intel_batchbuffer *batch)
 {
 	int i;
+	unsigned long cmds;
+
+	fprintf(stderr, "Generating for gen%d\n", gen);
 
 	printf("#include \"intel_renderstate.h\"\n\n");
 
@@ -43,8 +46,10 @@ static int print_state(int gen, struct intel_batchbuffer *batch)
 			printf("\t /* 0x%08x %s '%s' */", i * 4,
 			       intel_batch_type_as_str(cmd), cmd->str);
 
-		if (i * 4 == batch->cmds_end_offset)
+		if (i * 4 == batch->cmds_end_offset) {
+			cmds = i + 1;
 			printf("\t /* cmds end */");
+		}
 
 		if (intel_batch_is_reloc(batch, i))
 			printf("\t /* reloc */");
@@ -60,6 +65,11 @@ static int print_state(int gen, struct intel_batchbuffer *batch)
 
 	printf("};\n\nRO_RENDERSTATE(%d);\n", gen);
 
+	fprintf(stderr, "Commands %lu (%lu bytes)\n", cmds, cmds * 4);
+	fprintf(stderr, "State    %lu (%lu bytes)\n", batch->state->num_items, batch->state->num_items * 4);
+	fprintf(stderr, "Total    %lu (%lu bytes)\n", batch->cmds->num_items, batch->cmds->num_items * 4);
+	fprintf(stderr, "\n");
+
 	return 0;
 }
 
-- 
1.9.1