ac/debug: Dump indirect buffers.

This is for handling chained command buffers and secondary command
buffers. It doesn't handle the trace id for secondary command buffers
yet, but I don't think that is possible in general with just writes,
as we could call a secondary command buffer multiple times.

I think this is good enough for now, as the most useful case is the
chaining when we grow an IB.

Signed-off-by: Bas Nieuwenhuizen <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>
Reviewed-by: Dave Airlie <[email protected]>

3 files changed, 27 insertions, 4 deletions

diff --git a/src/amd/common/ac_debug.c b/src/amd/common/ac_debug.c
index d068492885e..f91e448a47f 100644
--- a/src/amd/common/ac_debug.c
+++ b/src/amd/common/ac_debug.c
@@ -139,7 +139,9 @@ static void ac_parse_set_reg_packet(FILE *f, uint32_t *ib, unsigned count,
 }
 
 static uint32_t *ac_parse_packet3(FILE *f, uint32_t *ib, int *num_dw,
-				  int trace_id, enum chip_class chip_class)
+				  int trace_id, enum chip_class chip_class,
+				  ac_debug_addr_callback addr_callback,
+				  void *addr_callback_data)
 {
 	unsigned count = PKT_COUNT_G(ib[0]);
 	unsigned op = PKT3_IT_OPCODE_G(ib[0]);
@@ -258,6 +260,17 @@ static uint32_t *ac_parse_packet3(FILE *f, uint32_t *ib, int *num_dw,
 		ac_dump_reg(f, R_3F0_IB_BASE_LO, ib[1], ~0);
 		ac_dump_reg(f, R_3F1_IB_BASE_HI, ib[2], ~0);
 		ac_dump_reg(f, R_3F2_CONTROL, ib[3], ~0);
+
+		if (addr_callback) {
+			uint64_t addr = ((uint64_t)ib[2] << 32) | ib[1];
+			void *data = addr_callback(addr_callback_data, addr);
+			const char *name = G_3F2_CHAIN(ib[3]) ? "chained" : "nested";
+
+			if (data)
+				ac_parse_ib(f, data,  G_3F2_IB_SIZE(ib[3]),
+					    trace_id, name, chip_class,
+					    addr_callback, addr_callback_data);
+		}
 		break;
 	case PKT3_CLEAR_STATE:
 	case PKT3_INCREMENT_DE_COUNTER:
@@ -320,9 +333,13 @@ static uint32_t *ac_parse_packet3(FILE *f, uint32_t *ib, int *num_dw,
  * \param chip_class	chip class
  * \param trace_id	the last trace ID that is known to have been reached
  *			and executed by the CP, typically read from a buffer
+ * \param addr_callback Get a mapped pointer of the IB at a given address. Can
+ *                      be NULL.
+ * \param addr_callback_data user data for addr_callback
  */
 void ac_parse_ib(FILE *f, uint32_t *ib, int num_dw, int trace_id,
-		 const char *name, enum chip_class chip_class)
+		 const char *name, enum chip_class chip_class,
+		 ac_debug_addr_callback addr_callback, void *addr_callback_data)
 {
 	fprintf(f, "------------------ %s begin ------------------\n", name);
 
@@ -332,7 +349,8 @@ void ac_parse_ib(FILE *f, uint32_t *ib, int num_dw, int trace_id,
 		switch (type) {
 		case 3:
 			ib = ac_parse_packet3(f, ib, &num_dw, trace_id,
-					      chip_class);
+					      chip_class, addr_callback,
+					      addr_callback_data);
 			break;
 		case 2:
 			/* type-2 nop */
diff --git a/src/amd/common/ac_debug.h b/src/amd/common/ac_debug.h
index f72b67a8456..63ac4fa84d1 100644
--- a/src/amd/common/ac_debug.h
+++ b/src/amd/common/ac_debug.h
@@ -35,9 +35,12 @@
 #define AC_IS_TRACE_POINT(x)            (((x) & 0xcafe0000) == 0xcafe0000)
 #define AC_GET_TRACE_POINT_ID(x)        ((x) & 0xffff)
 
+typedef void *(*ac_debug_addr_callback)(void *data, uint64_t addr);
+
 void ac_dump_reg(FILE *file, unsigned offset, uint32_t value,
 		 uint32_t field_mask);
 void ac_parse_ib(FILE *f, uint32_t *ib, int num_dw, int trace_id,
-		 const char *name, enum chip_class chip_class);
+		 const char *name, enum chip_class chip_class,
+		 ac_debug_addr_callback addr_callback, void *addr_callback_data);
 
 #endif
diff --git a/src/amd/common/sid.h b/src/amd/common/sid.h
index fc21a184cb0..285cfbfb62f 100644
--- a/src/amd/common/sid.h
+++ b/src/amd/common/sid.h
@@ -133,7 +133,9 @@
 #define   R_3F1_IB_BASE_HI                     0x3F1
 #define   R_3F2_CONTROL                        0x3F2
 #define     S_3F2_IB_SIZE(x)                   (((unsigned)(x) & 0xfffff) << 0)
+#define     G_3F2_IB_SIZE(x)                   (((unsigned)(x) >> 0) & 0xfffff)
 #define     S_3F2_CHAIN(x)                     (((unsigned)(x) & 0x1) << 20)
+#define     G_3F2_CHAIN(x)                     (((unsigned)(x) >> 20) & 0x1)
 #define     S_3F2_VALID(x)                     (((unsigned)(x) & 0x1) << 23)
 
 #define PKT3_COPY_DATA			       0x40