[PATCH v3 4/6] gpu: host1x: Disassemble more instructions

[Mikko Perttunen]

The disassembler for debug dumps was missing some newer host1x opcodes.
Add disassembly support for these.

Signed-off-by: Mikko Perttunen <mperttunen@xxxxxxxxxx>
---
 drivers/gpu/host1x/hw/debug_hw.c      | 59 ++++++++++++++++++++++++++++++++---
 drivers/gpu/host1x/hw/debug_hw_1x01.c |  2 +-
 drivers/gpu/host1x/hw/debug_hw_1x06.c |  3 +-
 3 files changed, 58 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/host1x/hw/debug_hw.c b/drivers/gpu/host1x/hw/debug_hw.c
index 1e67667e308c..989476801f9d 100644
--- a/drivers/gpu/host1x/hw/debug_hw.c
+++ b/drivers/gpu/host1x/hw/debug_hw.c
@@ -30,6 +30,13 @@ enum {
 	HOST1X_OPCODE_IMM	= 0x04,
 	HOST1X_OPCODE_RESTART	= 0x05,
 	HOST1X_OPCODE_GATHER	= 0x06,
+	HOST1X_OPCODE_SETSTRMID = 0x07,
+	HOST1X_OPCODE_SETAPPID  = 0x08,
+	HOST1X_OPCODE_SETPYLD   = 0x09,
+	HOST1X_OPCODE_INCR_W    = 0x0a,
+	HOST1X_OPCODE_NONINCR_W = 0x0b,
+	HOST1X_OPCODE_GATHER_W  = 0x0c,
+	HOST1X_OPCODE_RESTART_W = 0x0d,
 	HOST1X_OPCODE_EXTEND	= 0x0e,
 };
 
@@ -38,11 +45,16 @@ enum {
 	HOST1X_OPCODE_EXTEND_RELEASE_MLOCK	= 0x01,
 };
 
-static unsigned int show_channel_command(struct output *o, u32 val)
+#define INVALID_PAYLOAD				0xffffffff
+
+static unsigned int show_channel_command(struct output *o, u32 val,
+					 u32 *payload)
 {
-	unsigned int mask, subop, num;
+	unsigned int mask, subop, num, opcode;
+
+	opcode = val >> 28;
 
-	switch (val >> 28) {
+	switch (opcode) {
 	case HOST1X_OPCODE_SETCLASS:
 		mask = val & 0x3f;
 		if (mask) {
@@ -97,6 +109,44 @@ static unsigned int show_channel_command(struct output *o, u32 val)
 				    val >> 14 & 0x1, val & 0x3fff);
 		return 1;
 
+#if HOST1X_HW >= 6
+	case HOST1X_OPCODE_SETSTRMID:
+		host1x_debug_cont(o, "SETSTRMID(offset=%06x)\n",
+				  val & 0x3fffff);
+		return 0;
+
+	case HOST1X_OPCODE_SETAPPID:
+		host1x_debug_cont(o, "SETAPPID(appid=%02x)\n", val & 0xff);
+		return 0;
+
+	case HOST1X_OPCODE_SETPYLD:
+		*payload = val & 0xffff;
+		host1x_debug_cont(o, "SETPYLD(data=%04x)\n", *payload);
+		return 0;
+
+	case HOST1X_OPCODE_INCR_W:
+	case HOST1X_OPCODE_NONINCR_W:
+		host1x_debug_cont(o, "%s(offset=%06x, ",
+				  opcode == HOST1X_OPCODE_INCR_W ?
+					"INCR_W" : "NONINCR_W",
+				  val & 0x3fffff);
+		if (*payload == 0) {
+			host1x_debug_cont(o, "[])\n");
+			return 0;
+		} else if (*payload == INVALID_PAYLOAD) {
+			host1x_debug_cont(o, "unknown)\n");
+			return 0;
+		} else {
+			host1x_debug_cont(o, "[");
+			return *payload;
+		}
+
+	case HOST1X_OPCODE_GATHER_W:
+		host1x_debug_cont(o, "GATHER_W(count=%04x, addr=[",
+				  val & 0x3fff);
+		return 2;
+#endif
+
 	case HOST1X_OPCODE_EXTEND:
 		subop = val >> 24 & 0xf;
 		if (subop == HOST1X_OPCODE_EXTEND_ACQUIRE_MLOCK)
@@ -122,6 +172,7 @@ static void show_gather(struct output *o, phys_addr_t phys_addr,
 	/* Map dmaget cursor to corresponding mem handle */
 	u32 offset = phys_addr - pin_addr;
 	unsigned int data_count = 0, i;
+	u32 payload = INVALID_PAYLOAD;
 
 	/*
 	 * Sometimes we're given different hardware address to the same
@@ -139,7 +190,7 @@ static void show_gather(struct output *o, phys_addr_t phys_addr,
 
 		if (!data_count) {
 			host1x_debug_output(o, "%08x: %08x: ", addr, val);
-			data_count = show_channel_command(o, val);
+			data_count = show_channel_command(o, val, &payload);
 		} else {
 			host1x_debug_cont(o, "%08x%s", val,
 					    data_count > 1 ? ", " : "])\n");
diff --git a/drivers/gpu/host1x/hw/debug_hw_1x01.c b/drivers/gpu/host1x/hw/debug_hw_1x01.c
index 09e1aa7bb5dd..8790d5fd5f20 100644
--- a/drivers/gpu/host1x/hw/debug_hw_1x01.c
+++ b/drivers/gpu/host1x/hw/debug_hw_1x01.c
@@ -112,7 +112,7 @@ static void host1x_debug_show_channel_fifo(struct host1x *host,
 
 		if (!data_count) {
 			host1x_debug_output(o, "%08x: ", val);
-			data_count = show_channel_command(o, val);
+			data_count = show_channel_command(o, val, NULL);
 		} else {
 			host1x_debug_cont(o, "%08x%s", val,
 					  data_count > 1 ? ", " : "])\n");
diff --git a/drivers/gpu/host1x/hw/debug_hw_1x06.c b/drivers/gpu/host1x/hw/debug_hw_1x06.c
index bd89da5dc64c..b503c740c022 100644
--- a/drivers/gpu/host1x/hw/debug_hw_1x06.c
+++ b/drivers/gpu/host1x/hw/debug_hw_1x06.c
@@ -63,6 +63,7 @@ static void host1x_debug_show_channel_fifo(struct host1x *host,
 					   struct output *o)
 {
 	u32 val, rd_ptr, wr_ptr, start, end;
+	u32 payload = INVALID_PAYLOAD;
 	unsigned int data_count = 0;
 
 	host1x_debug_output(o, "%u: fifo:\n", ch->id);
@@ -107,7 +108,7 @@ static void host1x_debug_show_channel_fifo(struct host1x *host,
 		if (!data_count) {
 			host1x_debug_output(o, "%03x 0x%08x: ",
 					    rd_ptr - start, val);
-			data_count = show_channel_command(o, val);
+			data_count = show_channel_command(o, val, &payload);
 		} else {
 			host1x_debug_cont(o, "%08x%s", val,
 					  data_count > 1 ? ", " : "])\n");
-- 
2.14.1