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      1 /*
      2  * Copyright  2009-2011 Intel Corporation
      3  *
      4  * Permission is hereby granted, free of charge, to any person obtaining a
      5  * copy of this software and associated documentation files (the "Software"),
      6  * to deal in the Software without restriction, including without limitation
      7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      8  * and/or sell copies of the Software, and to permit persons to whom the
      9  * Software is furnished to do so, subject to the following conditions:
     10  *
     11  * The above copyright notice and this permission notice (including the next
     12  * paragraph) shall be included in all copies or substantial portions of the
     13  * Software.
     14  *
     15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
     21  * IN THE SOFTWARE.
     22  */
     23 
     24 #ifdef HAVE_CONFIG_H
     25 #include "config.h"
     26 #endif
     27 
     28 #include <assert.h>
     29 #include <stdint.h>
     30 #include <stdlib.h>
     31 #include <stdio.h>
     32 #include <stdbool.h>
     33 #include <stdarg.h>
     34 #include <string.h>
     35 
     36 #include "libdrm_macros.h"
     37 #include "xf86drm.h"
     38 #include "intel_chipset.h"
     39 #include "intel_bufmgr.h"
     40 
     41 
     42 /* Struct for tracking drm_intel_decode state. */
     43 struct drm_intel_decode {
     44 	/** stdio file where the output should land.  Defaults to stdout. */
     45 	FILE *out;
     46 
     47 	/** PCI device ID. */
     48 	uint32_t devid;
     49 
     50 	/**
     51 	 * Shorthand device identifier: 3 is 915, 4 is 965, 5 is
     52 	 * Ironlake, etc.
     53 	 */
     54 	int gen;
     55 
     56 	/** GPU address of the start of the current packet. */
     57 	uint32_t hw_offset;
     58 	/** CPU virtual address of the start of the current packet. */
     59 	uint32_t *data;
     60 	/** DWORDs of remaining batchbuffer data starting from the packet. */
     61 	uint32_t count;
     62 
     63 	/** GPU address of the start of the batchbuffer data. */
     64 	uint32_t base_hw_offset;
     65 	/** CPU Virtual address of the start of the batchbuffer data. */
     66 	uint32_t *base_data;
     67 	/** Number of DWORDs of batchbuffer data. */
     68 	uint32_t base_count;
     69 
     70 	/** @{
     71 	 * GPU head and tail pointers, which will be noted in the dump, or ~0.
     72 	 */
     73 	uint32_t head, tail;
     74 	/** @} */
     75 
     76 	/**
     77 	 * Whether to dump the dwords after MI_BATCHBUFFER_END.
     78 	 *
     79 	 * This sometimes provides clues in corrupted batchbuffers,
     80 	 * and is used by the intel-gpu-tools.
     81 	 */
     82 	bool dump_past_end;
     83 
     84 	bool overflowed;
     85 };
     86 
     87 static FILE *out;
     88 static uint32_t saved_s2 = 0, saved_s4 = 0;
     89 static char saved_s2_set = 0, saved_s4_set = 0;
     90 static uint32_t head_offset = 0xffffffff;	/* undefined */
     91 static uint32_t tail_offset = 0xffffffff;	/* undefined */
     92 
     93 #ifndef ARRAY_SIZE
     94 #define ARRAY_SIZE(A) (sizeof(A)/sizeof(A[0]))
     95 #endif
     96 
     97 #define BUFFER_FAIL(_count, _len, _name) do {			\
     98     fprintf(out, "Buffer size too small in %s (%d < %d)\n",	\
     99 	    (_name), (_count), (_len));				\
    100     return _count;						\
    101 } while (0)
    102 
    103 static float int_as_float(uint32_t intval)
    104 {
    105 	union intfloat {
    106 		uint32_t i;
    107 		float f;
    108 	} uval;
    109 
    110 	uval.i = intval;
    111 	return uval.f;
    112 }
    113 
    114 static void DRM_PRINTFLIKE(3, 4)
    115 instr_out(struct drm_intel_decode *ctx, unsigned int index,
    116 	  const char *fmt, ...)
    117 {
    118 	va_list va;
    119 	const char *parseinfo;
    120 	uint32_t offset = ctx->hw_offset + index * 4;
    121 
    122 	if (index > ctx->count) {
    123 		if (!ctx->overflowed) {
    124 			fprintf(out, "ERROR: Decode attempted to continue beyond end of batchbuffer\n");
    125 			ctx->overflowed = true;
    126 		}
    127 		return;
    128 	}
    129 
    130 	if (offset == head_offset)
    131 		parseinfo = "HEAD";
    132 	else if (offset == tail_offset)
    133 		parseinfo = "TAIL";
    134 	else
    135 		parseinfo = "    ";
    136 
    137 	fprintf(out, "0x%08x: %s 0x%08x: %s", offset, parseinfo,
    138 		ctx->data[index], index == 0 ? "" : "   ");
    139 	va_start(va, fmt);
    140 	vfprintf(out, fmt, va);
    141 	va_end(va);
    142 }
    143 
    144 static int
    145 decode_MI_SET_CONTEXT(struct drm_intel_decode *ctx)
    146 {
    147 	uint32_t data = ctx->data[1];
    148 	if (ctx->gen > 7)
    149 		return 1;
    150 
    151 	instr_out(ctx, 0, "MI_SET_CONTEXT\n");
    152 	instr_out(ctx, 1, "gtt offset = 0x%x%s%s\n",
    153 		  data & ~0xfff,
    154 		  data & (1<<1)? ", Force Restore": "",
    155 		  data & (1<<0)? ", Restore Inhibit": "");
    156 
    157 	return 2;
    158 }
    159 
    160 static int
    161 decode_MI_WAIT_FOR_EVENT(struct drm_intel_decode *ctx)
    162 {
    163 	const char *cc_wait;
    164 	int cc_shift = 0;
    165 	uint32_t data = ctx->data[0];
    166 
    167 	if (ctx->gen <= 5)
    168 		cc_shift = 9;
    169 	else
    170 		cc_shift = 16;
    171 
    172 	switch ((data >> cc_shift) & 0x1f) {
    173 	case 1:
    174 		cc_wait = ", cc wait 1";
    175 		break;
    176 	case 2:
    177 		cc_wait = ", cc wait 2";
    178 		break;
    179 	case 3:
    180 		cc_wait = ", cc wait 3";
    181 		break;
    182 	case 4:
    183 		cc_wait = ", cc wait 4";
    184 		break;
    185 	case 5:
    186 		cc_wait = ", cc wait 4";
    187 		break;
    188 	default:
    189 		cc_wait = "";
    190 		break;
    191 	}
    192 
    193 	if (ctx->gen <= 5) {
    194 		instr_out(ctx, 0, "MI_WAIT_FOR_EVENT%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
    195 			  data & (1<<18)? ", pipe B start vblank wait": "",
    196 			  data & (1<<17)? ", pipe A start vblank wait": "",
    197 			  data & (1<<16)? ", overlay flip pending wait": "",
    198 			  data & (1<<14)? ", pipe B hblank wait": "",
    199 			  data & (1<<13)? ", pipe A hblank wait": "",
    200 			  cc_wait,
    201 			  data & (1<<8)? ", plane C pending flip wait": "",
    202 			  data & (1<<7)? ", pipe B vblank wait": "",
    203 			  data & (1<<6)? ", plane B pending flip wait": "",
    204 			  data & (1<<5)? ", pipe B scan line wait": "",
    205 			  data & (1<<4)? ", fbc idle wait": "",
    206 			  data & (1<<3)? ", pipe A vblank wait": "",
    207 			  data & (1<<2)? ", plane A pending flip wait": "",
    208 			  data & (1<<1)? ", plane A scan line wait": "");
    209 	} else {
    210 		instr_out(ctx, 0, "MI_WAIT_FOR_EVENT%s%s%s%s%s%s%s%s%s%s%s%s\n",
    211 			  data & (1<<20)? ", sprite C pending flip wait": "", /* ivb */
    212 			  cc_wait,
    213 			  data & (1<<13)? ", pipe B hblank wait": "",
    214 			  data & (1<<11)? ", pipe B vblank wait": "",
    215 			  data & (1<<10)? ", sprite B pending flip wait": "",
    216 			  data & (1<<9)? ", plane B pending flip wait": "",
    217 			  data & (1<<8)? ", plane B scan line wait": "",
    218 			  data & (1<<5)? ", pipe A hblank wait": "",
    219 			  data & (1<<3)? ", pipe A vblank wait": "",
    220 			  data & (1<<2)? ", sprite A pending flip wait": "",
    221 			  data & (1<<1)? ", plane A pending flip wait": "",
    222 			  data & (1<<0)? ", plane A scan line wait": "");
    223 	}
    224 
    225 	return 1;
    226 }
    227 
    228 static int
    229 decode_mi(struct drm_intel_decode *ctx)
    230 {
    231 	unsigned int opcode, len = -1;
    232 	const char *post_sync_op = "";
    233 	uint32_t *data = ctx->data;
    234 
    235 	struct {
    236 		uint32_t opcode;
    237 		int len_mask;
    238 		unsigned int min_len;
    239 		unsigned int max_len;
    240 		const char *name;
    241 		int (*func)(struct drm_intel_decode *ctx);
    242 	} opcodes_mi[] = {
    243 		{ 0x08, 0, 1, 1, "MI_ARB_ON_OFF" },
    244 		{ 0x0a, 0, 1, 1, "MI_BATCH_BUFFER_END" },
    245 		{ 0x30, 0x3f, 3, 3, "MI_BATCH_BUFFER" },
    246 		{ 0x31, 0x3f, 2, 2, "MI_BATCH_BUFFER_START" },
    247 		{ 0x14, 0x3f, 3, 3, "MI_DISPLAY_BUFFER_INFO" },
    248 		{ 0x04, 0, 1, 1, "MI_FLUSH" },
    249 		{ 0x22, 0x1f, 3, 3, "MI_LOAD_REGISTER_IMM" },
    250 		{ 0x13, 0x3f, 2, 2, "MI_LOAD_SCAN_LINES_EXCL" },
    251 		{ 0x12, 0x3f, 2, 2, "MI_LOAD_SCAN_LINES_INCL" },
    252 		{ 0x00, 0, 1, 1, "MI_NOOP" },
    253 		{ 0x11, 0x3f, 2, 2, "MI_OVERLAY_FLIP" },
    254 		{ 0x07, 0, 1, 1, "MI_REPORT_HEAD" },
    255 		{ 0x18, 0x3f, 2, 2, "MI_SET_CONTEXT", decode_MI_SET_CONTEXT },
    256 		{ 0x20, 0x3f, 3, 4, "MI_STORE_DATA_IMM" },
    257 		{ 0x21, 0x3f, 3, 4, "MI_STORE_DATA_INDEX" },
    258 		{ 0x24, 0x3f, 3, 3, "MI_STORE_REGISTER_MEM" },
    259 		{ 0x02, 0, 1, 1, "MI_USER_INTERRUPT" },
    260 		{ 0x03, 0, 1, 1, "MI_WAIT_FOR_EVENT", decode_MI_WAIT_FOR_EVENT },
    261 		{ 0x16, 0x7f, 3, 3, "MI_SEMAPHORE_MBOX" },
    262 		{ 0x26, 0x1f, 3, 4, "MI_FLUSH_DW" },
    263 		{ 0x28, 0x3f, 3, 3, "MI_REPORT_PERF_COUNT" },
    264 		{ 0x29, 0xff, 3, 3, "MI_LOAD_REGISTER_MEM" },
    265 		{ 0x0b, 0, 1, 1, "MI_SUSPEND_FLUSH"},
    266 	}, *opcode_mi = NULL;
    267 
    268 	/* check instruction length */
    269 	for (opcode = 0; opcode < sizeof(opcodes_mi) / sizeof(opcodes_mi[0]);
    270 	     opcode++) {
    271 		if ((data[0] & 0x1f800000) >> 23 == opcodes_mi[opcode].opcode) {
    272 			len = 1;
    273 			if (opcodes_mi[opcode].max_len > 1) {
    274 				len =
    275 				    (data[0] & opcodes_mi[opcode].len_mask) + 2;
    276 				if (len < opcodes_mi[opcode].min_len
    277 				    || len > opcodes_mi[opcode].max_len) {
    278 					fprintf(out,
    279 						"Bad length (%d) in %s, [%d, %d]\n",
    280 						len, opcodes_mi[opcode].name,
    281 						opcodes_mi[opcode].min_len,
    282 						opcodes_mi[opcode].max_len);
    283 				}
    284 			}
    285 			opcode_mi = &opcodes_mi[opcode];
    286 			break;
    287 		}
    288 	}
    289 
    290 	if (opcode_mi && opcode_mi->func)
    291 		return opcode_mi->func(ctx);
    292 
    293 	switch ((data[0] & 0x1f800000) >> 23) {
    294 	case 0x0a:
    295 		instr_out(ctx, 0, "MI_BATCH_BUFFER_END\n");
    296 		return -1;
    297 	case 0x16:
    298 		instr_out(ctx, 0, "MI_SEMAPHORE_MBOX%s%s%s%s %u\n",
    299 			  data[0] & (1 << 22) ? " global gtt," : "",
    300 			  data[0] & (1 << 21) ? " update semaphore," : "",
    301 			  data[0] & (1 << 20) ? " compare semaphore," : "",
    302 			  data[0] & (1 << 18) ? " use compare reg" : "",
    303 			  (data[0] & (0x3 << 16)) >> 16);
    304 		instr_out(ctx, 1, "value\n");
    305 		instr_out(ctx, 2, "address\n");
    306 		return len;
    307 	case 0x21:
    308 		instr_out(ctx, 0, "MI_STORE_DATA_INDEX%s\n",
    309 			  data[0] & (1 << 21) ? " use per-process HWS," : "");
    310 		instr_out(ctx, 1, "index\n");
    311 		instr_out(ctx, 2, "dword\n");
    312 		if (len == 4)
    313 			instr_out(ctx, 3, "upper dword\n");
    314 		return len;
    315 	case 0x00:
    316 		if (data[0] & (1 << 22))
    317 			instr_out(ctx, 0,
    318 				  "MI_NOOP write NOPID reg, val=0x%x\n",
    319 				  data[0] & ((1 << 22) - 1));
    320 		else
    321 			instr_out(ctx, 0, "MI_NOOP\n");
    322 		return len;
    323 	case 0x26:
    324 		switch (data[0] & (0x3 << 14)) {
    325 		case (0 << 14):
    326 			post_sync_op = "no write";
    327 			break;
    328 		case (1 << 14):
    329 			post_sync_op = "write data";
    330 			break;
    331 		case (2 << 14):
    332 			post_sync_op = "reserved";
    333 			break;
    334 		case (3 << 14):
    335 			post_sync_op = "write TIMESTAMP";
    336 			break;
    337 		}
    338 		instr_out(ctx, 0,
    339 			  "MI_FLUSH_DW%s%s%s%s post_sync_op='%s' %s%s\n",
    340 			  data[0] & (1 << 22) ?
    341 			  " enable protected mem (BCS-only)," : "",
    342 			  data[0] & (1 << 21) ? " store in hws," : "",
    343 			  data[0] & (1 << 18) ? " invalidate tlb," : "",
    344 			  data[0] & (1 << 17) ? " flush gfdt," : "",
    345 			  post_sync_op,
    346 			  data[0] & (1 << 8) ? " enable notify interrupt," : "",
    347 			  data[0] & (1 << 7) ?
    348 			  " invalidate video state (BCS-only)," : "");
    349 		if (data[0] & (1 << 21))
    350 			instr_out(ctx, 1, "hws index\n");
    351 		else
    352 			instr_out(ctx, 1, "address\n");
    353 		instr_out(ctx, 2, "dword\n");
    354 		if (len == 4)
    355 			instr_out(ctx, 3, "upper dword\n");
    356 		return len;
    357 	}
    358 
    359 	for (opcode = 0; opcode < sizeof(opcodes_mi) / sizeof(opcodes_mi[0]);
    360 	     opcode++) {
    361 		if ((data[0] & 0x1f800000) >> 23 == opcodes_mi[opcode].opcode) {
    362 			unsigned int i;
    363 
    364 			instr_out(ctx, 0, "%s\n",
    365 				  opcodes_mi[opcode].name);
    366 			for (i = 1; i < len; i++) {
    367 				instr_out(ctx, i, "dword %d\n", i);
    368 			}
    369 
    370 			return len;
    371 		}
    372 	}
    373 
    374 	instr_out(ctx, 0, "MI UNKNOWN\n");
    375 	return 1;
    376 }
    377 
    378 static void
    379 decode_2d_br00(struct drm_intel_decode *ctx, const char *cmd)
    380 {
    381 	instr_out(ctx, 0,
    382 		  "%s (rgb %sabled, alpha %sabled, src tile %d, dst tile %d)\n",
    383 		  cmd,
    384 		  (ctx->data[0] & (1 << 20)) ? "en" : "dis",
    385 		  (ctx->data[0] & (1 << 21)) ? "en" : "dis",
    386 		  (ctx->data[0] >> 15) & 1,
    387 		  (ctx->data[0] >> 11) & 1);
    388 }
    389 
    390 static void
    391 decode_2d_br01(struct drm_intel_decode *ctx)
    392 {
    393 	const char *format;
    394 	switch ((ctx->data[1] >> 24) & 0x3) {
    395 	case 0:
    396 		format = "8";
    397 		break;
    398 	case 1:
    399 		format = "565";
    400 		break;
    401 	case 2:
    402 		format = "1555";
    403 		break;
    404 	case 3:
    405 		format = "8888";
    406 		break;
    407 	}
    408 
    409 	instr_out(ctx, 1,
    410 		  "format %s, pitch %d, rop 0x%02x, "
    411 		  "clipping %sabled, %s%s \n",
    412 		  format,
    413 		  (short)(ctx->data[1] & 0xffff),
    414 		  (ctx->data[1] >> 16) & 0xff,
    415 		  ctx->data[1] & (1 << 30) ? "en" : "dis",
    416 		  ctx->data[1] & (1 << 31) ? "solid pattern enabled, " : "",
    417 		  ctx->data[1] & (1 << 31) ?
    418 		  "mono pattern transparency enabled, " : "");
    419 
    420 }
    421 
    422 static int
    423 decode_2d(struct drm_intel_decode *ctx)
    424 {
    425 	unsigned int opcode, len;
    426 	uint32_t *data = ctx->data;
    427 
    428 	struct {
    429 		uint32_t opcode;
    430 		unsigned int min_len;
    431 		unsigned int max_len;
    432 		const char *name;
    433 	} opcodes_2d[] = {
    434 		{ 0x40, 5, 5, "COLOR_BLT" },
    435 		{ 0x43, 6, 6, "SRC_COPY_BLT" },
    436 		{ 0x01, 8, 8, "XY_SETUP_BLT" },
    437 		{ 0x11, 9, 9, "XY_SETUP_MONO_PATTERN_SL_BLT" },
    438 		{ 0x03, 3, 3, "XY_SETUP_CLIP_BLT" },
    439 		{ 0x24, 2, 2, "XY_PIXEL_BLT" },
    440 		{ 0x25, 3, 3, "XY_SCANLINES_BLT" },
    441 		{ 0x26, 4, 4, "Y_TEXT_BLT" },
    442 		{ 0x31, 5, 134, "XY_TEXT_IMMEDIATE_BLT" },
    443 		{ 0x50, 6, 6, "XY_COLOR_BLT" },
    444 		{ 0x51, 6, 6, "XY_PAT_BLT" },
    445 		{ 0x76, 8, 8, "XY_PAT_CHROMA_BLT" },
    446 		{ 0x72, 7, 135, "XY_PAT_BLT_IMMEDIATE" },
    447 		{ 0x77, 9, 137, "XY_PAT_CHROMA_BLT_IMMEDIATE" },
    448 		{ 0x52, 9, 9, "XY_MONO_PAT_BLT" },
    449 		{ 0x59, 7, 7, "XY_MONO_PAT_FIXED_BLT" },
    450 		{ 0x53, 8, 8, "XY_SRC_COPY_BLT" },
    451 		{ 0x54, 8, 8, "XY_MONO_SRC_COPY_BLT" },
    452 		{ 0x71, 9, 137, "XY_MONO_SRC_COPY_IMMEDIATE_BLT" },
    453 		{ 0x55, 9, 9, "XY_FULL_BLT" },
    454 		{ 0x55, 9, 137, "XY_FULL_IMMEDIATE_PATTERN_BLT" },
    455 		{ 0x56, 9, 9, "XY_FULL_MONO_SRC_BLT" },
    456 		{ 0x75, 10, 138, "XY_FULL_MONO_SRC_IMMEDIATE_PATTERN_BLT" },
    457 		{ 0x57, 12, 12, "XY_FULL_MONO_PATTERN_BLT" },
    458 		{ 0x58, 12, 12, "XY_FULL_MONO_PATTERN_MONO_SRC_BLT"},
    459 	};
    460 
    461 	switch ((data[0] & 0x1fc00000) >> 22) {
    462 	case 0x25:
    463 		instr_out(ctx, 0,
    464 			  "XY_SCANLINES_BLT (pattern seed (%d, %d), dst tile %d)\n",
    465 			  (data[0] >> 12) & 0x8,
    466 			  (data[0] >> 8) & 0x8, (data[0] >> 11) & 1);
    467 
    468 		len = (data[0] & 0x000000ff) + 2;
    469 		if (len != 3)
    470 			fprintf(out, "Bad count in XY_SCANLINES_BLT\n");
    471 
    472 		instr_out(ctx, 1, "dest (%d,%d)\n",
    473 			  data[1] & 0xffff, data[1] >> 16);
    474 		instr_out(ctx, 2, "dest (%d,%d)\n",
    475 			  data[2] & 0xffff, data[2] >> 16);
    476 		return len;
    477 	case 0x01:
    478 		decode_2d_br00(ctx, "XY_SETUP_BLT");
    479 
    480 		len = (data[0] & 0x000000ff) + 2;
    481 		if (len != 8)
    482 			fprintf(out, "Bad count in XY_SETUP_BLT\n");
    483 
    484 		decode_2d_br01(ctx);
    485 		instr_out(ctx, 2, "cliprect (%d,%d)\n",
    486 			  data[2] & 0xffff, data[2] >> 16);
    487 		instr_out(ctx, 3, "cliprect (%d,%d)\n",
    488 			  data[3] & 0xffff, data[3] >> 16);
    489 		instr_out(ctx, 4, "setup dst offset 0x%08x\n",
    490 			  data[4]);
    491 		instr_out(ctx, 5, "setup background color\n");
    492 		instr_out(ctx, 6, "setup foreground color\n");
    493 		instr_out(ctx, 7, "color pattern offset\n");
    494 		return len;
    495 	case 0x03:
    496 		decode_2d_br00(ctx, "XY_SETUP_CLIP_BLT");
    497 
    498 		len = (data[0] & 0x000000ff) + 2;
    499 		if (len != 3)
    500 			fprintf(out, "Bad count in XY_SETUP_CLIP_BLT\n");
    501 
    502 		instr_out(ctx, 1, "cliprect (%d,%d)\n",
    503 			  data[1] & 0xffff, data[2] >> 16);
    504 		instr_out(ctx, 2, "cliprect (%d,%d)\n",
    505 			  data[2] & 0xffff, data[3] >> 16);
    506 		return len;
    507 	case 0x11:
    508 		decode_2d_br00(ctx, "XY_SETUP_MONO_PATTERN_SL_BLT");
    509 
    510 		len = (data[0] & 0x000000ff) + 2;
    511 		if (len != 9)
    512 			fprintf(out,
    513 				"Bad count in XY_SETUP_MONO_PATTERN_SL_BLT\n");
    514 
    515 		decode_2d_br01(ctx);
    516 		instr_out(ctx, 2, "cliprect (%d,%d)\n",
    517 			  data[2] & 0xffff, data[2] >> 16);
    518 		instr_out(ctx, 3, "cliprect (%d,%d)\n",
    519 			  data[3] & 0xffff, data[3] >> 16);
    520 		instr_out(ctx, 4, "setup dst offset 0x%08x\n",
    521 			  data[4]);
    522 		instr_out(ctx, 5, "setup background color\n");
    523 		instr_out(ctx, 6, "setup foreground color\n");
    524 		instr_out(ctx, 7, "mono pattern dw0\n");
    525 		instr_out(ctx, 8, "mono pattern dw1\n");
    526 		return len;
    527 	case 0x50:
    528 		decode_2d_br00(ctx, "XY_COLOR_BLT");
    529 
    530 		len = (data[0] & 0x000000ff) + 2;
    531 		if (len != 6)
    532 			fprintf(out, "Bad count in XY_COLOR_BLT\n");
    533 
    534 		decode_2d_br01(ctx);
    535 		instr_out(ctx, 2, "(%d,%d)\n",
    536 			  data[2] & 0xffff, data[2] >> 16);
    537 		instr_out(ctx, 3, "(%d,%d)\n",
    538 			  data[3] & 0xffff, data[3] >> 16);
    539 		instr_out(ctx, 4, "offset 0x%08x\n", data[4]);
    540 		instr_out(ctx, 5, "color\n");
    541 		return len;
    542 	case 0x53:
    543 		decode_2d_br00(ctx, "XY_SRC_COPY_BLT");
    544 
    545 		len = (data[0] & 0x000000ff) + 2;
    546 		if (len != 8)
    547 			fprintf(out, "Bad count in XY_SRC_COPY_BLT\n");
    548 
    549 		decode_2d_br01(ctx);
    550 		instr_out(ctx, 2, "dst (%d,%d)\n",
    551 			  data[2] & 0xffff, data[2] >> 16);
    552 		instr_out(ctx, 3, "dst (%d,%d)\n",
    553 			  data[3] & 0xffff, data[3] >> 16);
    554 		instr_out(ctx, 4, "dst offset 0x%08x\n", data[4]);
    555 		instr_out(ctx, 5, "src (%d,%d)\n",
    556 			  data[5] & 0xffff, data[5] >> 16);
    557 		instr_out(ctx, 6, "src pitch %d\n",
    558 			  (short)(data[6] & 0xffff));
    559 		instr_out(ctx, 7, "src offset 0x%08x\n", data[7]);
    560 		return len;
    561 	}
    562 
    563 	for (opcode = 0; opcode < sizeof(opcodes_2d) / sizeof(opcodes_2d[0]);
    564 	     opcode++) {
    565 		if ((data[0] & 0x1fc00000) >> 22 == opcodes_2d[opcode].opcode) {
    566 			unsigned int i;
    567 
    568 			len = 1;
    569 			instr_out(ctx, 0, "%s\n",
    570 				  opcodes_2d[opcode].name);
    571 			if (opcodes_2d[opcode].max_len > 1) {
    572 				len = (data[0] & 0x000000ff) + 2;
    573 				if (len < opcodes_2d[opcode].min_len ||
    574 				    len > opcodes_2d[opcode].max_len) {
    575 					fprintf(out, "Bad count in %s\n",
    576 						opcodes_2d[opcode].name);
    577 				}
    578 			}
    579 
    580 			for (i = 1; i < len; i++) {
    581 				instr_out(ctx, i, "dword %d\n", i);
    582 			}
    583 
    584 			return len;
    585 		}
    586 	}
    587 
    588 	instr_out(ctx, 0, "2D UNKNOWN\n");
    589 	return 1;
    590 }
    591 
    592 static int
    593 decode_3d_1c(struct drm_intel_decode *ctx)
    594 {
    595 	uint32_t *data = ctx->data;
    596 	uint32_t opcode;
    597 
    598 	opcode = (data[0] & 0x00f80000) >> 19;
    599 
    600 	switch (opcode) {
    601 	case 0x11:
    602 		instr_out(ctx, 0,
    603 			  "3DSTATE_DEPTH_SUBRECTANGLE_DISABLE\n");
    604 		return 1;
    605 	case 0x10:
    606 		instr_out(ctx, 0, "3DSTATE_SCISSOR_ENABLE %s\n",
    607 			  data[0] & 1 ? "enabled" : "disabled");
    608 		return 1;
    609 	case 0x01:
    610 		instr_out(ctx, 0, "3DSTATE_MAP_COORD_SET_I830\n");
    611 		return 1;
    612 	case 0x0a:
    613 		instr_out(ctx, 0, "3DSTATE_MAP_CUBE_I830\n");
    614 		return 1;
    615 	case 0x05:
    616 		instr_out(ctx, 0, "3DSTATE_MAP_TEX_STREAM_I830\n");
    617 		return 1;
    618 	}
    619 
    620 	instr_out(ctx, 0, "3D UNKNOWN: 3d_1c opcode = 0x%x\n",
    621 		  opcode);
    622 	return 1;
    623 }
    624 
    625 /** Sets the string dstname to describe the destination of the PS instruction */
    626 static void
    627 i915_get_instruction_dst(uint32_t *data, int i, char *dstname, int do_mask)
    628 {
    629 	uint32_t a0 = data[i];
    630 	int dst_nr = (a0 >> 14) & 0xf;
    631 	char dstmask[8];
    632 	const char *sat;
    633 
    634 	if (do_mask) {
    635 		if (((a0 >> 10) & 0xf) == 0xf) {
    636 			dstmask[0] = 0;
    637 		} else {
    638 			int dstmask_index = 0;
    639 
    640 			dstmask[dstmask_index++] = '.';
    641 			if (a0 & (1 << 10))
    642 				dstmask[dstmask_index++] = 'x';
    643 			if (a0 & (1 << 11))
    644 				dstmask[dstmask_index++] = 'y';
    645 			if (a0 & (1 << 12))
    646 				dstmask[dstmask_index++] = 'z';
    647 			if (a0 & (1 << 13))
    648 				dstmask[dstmask_index++] = 'w';
    649 			dstmask[dstmask_index++] = 0;
    650 		}
    651 
    652 		if (a0 & (1 << 22))
    653 			sat = ".sat";
    654 		else
    655 			sat = "";
    656 	} else {
    657 		dstmask[0] = 0;
    658 		sat = "";
    659 	}
    660 
    661 	switch ((a0 >> 19) & 0x7) {
    662 	case 0:
    663 		if (dst_nr > 15)
    664 			fprintf(out, "bad destination reg R%d\n", dst_nr);
    665 		sprintf(dstname, "R%d%s%s", dst_nr, dstmask, sat);
    666 		break;
    667 	case 4:
    668 		if (dst_nr > 0)
    669 			fprintf(out, "bad destination reg oC%d\n", dst_nr);
    670 		sprintf(dstname, "oC%s%s", dstmask, sat);
    671 		break;
    672 	case 5:
    673 		if (dst_nr > 0)
    674 			fprintf(out, "bad destination reg oD%d\n", dst_nr);
    675 		sprintf(dstname, "oD%s%s", dstmask, sat);
    676 		break;
    677 	case 6:
    678 		if (dst_nr > 3)
    679 			fprintf(out, "bad destination reg U%d\n", dst_nr);
    680 		sprintf(dstname, "U%d%s%s", dst_nr, dstmask, sat);
    681 		break;
    682 	default:
    683 		sprintf(dstname, "RESERVED");
    684 		break;
    685 	}
    686 }
    687 
    688 static const char *
    689 i915_get_channel_swizzle(uint32_t select)
    690 {
    691 	switch (select & 0x7) {
    692 	case 0:
    693 		return (select & 8) ? "-x" : "x";
    694 	case 1:
    695 		return (select & 8) ? "-y" : "y";
    696 	case 2:
    697 		return (select & 8) ? "-z" : "z";
    698 	case 3:
    699 		return (select & 8) ? "-w" : "w";
    700 	case 4:
    701 		return (select & 8) ? "-0" : "0";
    702 	case 5:
    703 		return (select & 8) ? "-1" : "1";
    704 	default:
    705 		return (select & 8) ? "-bad" : "bad";
    706 	}
    707 }
    708 
    709 static void
    710 i915_get_instruction_src_name(uint32_t src_type, uint32_t src_nr, char *name)
    711 {
    712 	switch (src_type) {
    713 	case 0:
    714 		sprintf(name, "R%d", src_nr);
    715 		if (src_nr > 15)
    716 			fprintf(out, "bad src reg %s\n", name);
    717 		break;
    718 	case 1:
    719 		if (src_nr < 8)
    720 			sprintf(name, "T%d", src_nr);
    721 		else if (src_nr == 8)
    722 			sprintf(name, "DIFFUSE");
    723 		else if (src_nr == 9)
    724 			sprintf(name, "SPECULAR");
    725 		else if (src_nr == 10)
    726 			sprintf(name, "FOG");
    727 		else {
    728 			fprintf(out, "bad src reg T%d\n", src_nr);
    729 			sprintf(name, "RESERVED");
    730 		}
    731 		break;
    732 	case 2:
    733 		sprintf(name, "C%d", src_nr);
    734 		if (src_nr > 31)
    735 			fprintf(out, "bad src reg %s\n", name);
    736 		break;
    737 	case 4:
    738 		sprintf(name, "oC");
    739 		if (src_nr > 0)
    740 			fprintf(out, "bad src reg oC%d\n", src_nr);
    741 		break;
    742 	case 5:
    743 		sprintf(name, "oD");
    744 		if (src_nr > 0)
    745 			fprintf(out, "bad src reg oD%d\n", src_nr);
    746 		break;
    747 	case 6:
    748 		sprintf(name, "U%d", src_nr);
    749 		if (src_nr > 3)
    750 			fprintf(out, "bad src reg %s\n", name);
    751 		break;
    752 	default:
    753 		fprintf(out, "bad src reg type %d\n", src_type);
    754 		sprintf(name, "RESERVED");
    755 		break;
    756 	}
    757 }
    758 
    759 static void i915_get_instruction_src0(uint32_t *data, int i, char *srcname)
    760 {
    761 	uint32_t a0 = data[i];
    762 	uint32_t a1 = data[i + 1];
    763 	int src_nr = (a0 >> 2) & 0x1f;
    764 	const char *swizzle_x = i915_get_channel_swizzle((a1 >> 28) & 0xf);
    765 	const char *swizzle_y = i915_get_channel_swizzle((a1 >> 24) & 0xf);
    766 	const char *swizzle_z = i915_get_channel_swizzle((a1 >> 20) & 0xf);
    767 	const char *swizzle_w = i915_get_channel_swizzle((a1 >> 16) & 0xf);
    768 	char swizzle[100];
    769 
    770 	i915_get_instruction_src_name((a0 >> 7) & 0x7, src_nr, srcname);
    771 	sprintf(swizzle, ".%s%s%s%s", swizzle_x, swizzle_y, swizzle_z,
    772 		swizzle_w);
    773 	if (strcmp(swizzle, ".xyzw") != 0)
    774 		strcat(srcname, swizzle);
    775 }
    776 
    777 static void i915_get_instruction_src1(uint32_t *data, int i, char *srcname)
    778 {
    779 	uint32_t a1 = data[i + 1];
    780 	uint32_t a2 = data[i + 2];
    781 	int src_nr = (a1 >> 8) & 0x1f;
    782 	const char *swizzle_x = i915_get_channel_swizzle((a1 >> 4) & 0xf);
    783 	const char *swizzle_y = i915_get_channel_swizzle((a1 >> 0) & 0xf);
    784 	const char *swizzle_z = i915_get_channel_swizzle((a2 >> 28) & 0xf);
    785 	const char *swizzle_w = i915_get_channel_swizzle((a2 >> 24) & 0xf);
    786 	char swizzle[100];
    787 
    788 	i915_get_instruction_src_name((a1 >> 13) & 0x7, src_nr, srcname);
    789 	sprintf(swizzle, ".%s%s%s%s", swizzle_x, swizzle_y, swizzle_z,
    790 		swizzle_w);
    791 	if (strcmp(swizzle, ".xyzw") != 0)
    792 		strcat(srcname, swizzle);
    793 }
    794 
    795 static void i915_get_instruction_src2(uint32_t *data, int i, char *srcname)
    796 {
    797 	uint32_t a2 = data[i + 2];
    798 	int src_nr = (a2 >> 16) & 0x1f;
    799 	const char *swizzle_x = i915_get_channel_swizzle((a2 >> 12) & 0xf);
    800 	const char *swizzle_y = i915_get_channel_swizzle((a2 >> 8) & 0xf);
    801 	const char *swizzle_z = i915_get_channel_swizzle((a2 >> 4) & 0xf);
    802 	const char *swizzle_w = i915_get_channel_swizzle((a2 >> 0) & 0xf);
    803 	char swizzle[100];
    804 
    805 	i915_get_instruction_src_name((a2 >> 21) & 0x7, src_nr, srcname);
    806 	sprintf(swizzle, ".%s%s%s%s", swizzle_x, swizzle_y, swizzle_z,
    807 		swizzle_w);
    808 	if (strcmp(swizzle, ".xyzw") != 0)
    809 		strcat(srcname, swizzle);
    810 }
    811 
    812 static void
    813 i915_get_instruction_addr(uint32_t src_type, uint32_t src_nr, char *name)
    814 {
    815 	switch (src_type) {
    816 	case 0:
    817 		sprintf(name, "R%d", src_nr);
    818 		if (src_nr > 15)
    819 			fprintf(out, "bad src reg %s\n", name);
    820 		break;
    821 	case 1:
    822 		if (src_nr < 8)
    823 			sprintf(name, "T%d", src_nr);
    824 		else if (src_nr == 8)
    825 			sprintf(name, "DIFFUSE");
    826 		else if (src_nr == 9)
    827 			sprintf(name, "SPECULAR");
    828 		else if (src_nr == 10)
    829 			sprintf(name, "FOG");
    830 		else {
    831 			fprintf(out, "bad src reg T%d\n", src_nr);
    832 			sprintf(name, "RESERVED");
    833 		}
    834 		break;
    835 	case 4:
    836 		sprintf(name, "oC");
    837 		if (src_nr > 0)
    838 			fprintf(out, "bad src reg oC%d\n", src_nr);
    839 		break;
    840 	case 5:
    841 		sprintf(name, "oD");
    842 		if (src_nr > 0)
    843 			fprintf(out, "bad src reg oD%d\n", src_nr);
    844 		break;
    845 	default:
    846 		fprintf(out, "bad src reg type %d\n", src_type);
    847 		sprintf(name, "RESERVED");
    848 		break;
    849 	}
    850 }
    851 
    852 static void
    853 i915_decode_alu1(struct drm_intel_decode *ctx,
    854 		 int i, char *instr_prefix, const char *op_name)
    855 {
    856 	char dst[100], src0[100];
    857 
    858 	i915_get_instruction_dst(ctx->data, i, dst, 1);
    859 	i915_get_instruction_src0(ctx->data, i, src0);
    860 
    861 	instr_out(ctx, i++, "%s: %s %s, %s\n", instr_prefix,
    862 		  op_name, dst, src0);
    863 	instr_out(ctx, i++, "%s\n", instr_prefix);
    864 	instr_out(ctx, i++, "%s\n", instr_prefix);
    865 }
    866 
    867 static void
    868 i915_decode_alu2(struct drm_intel_decode *ctx,
    869 		 int i, char *instr_prefix, const char *op_name)
    870 {
    871 	char dst[100], src0[100], src1[100];
    872 
    873 	i915_get_instruction_dst(ctx->data, i, dst, 1);
    874 	i915_get_instruction_src0(ctx->data, i, src0);
    875 	i915_get_instruction_src1(ctx->data, i, src1);
    876 
    877 	instr_out(ctx, i++, "%s: %s %s, %s, %s\n", instr_prefix,
    878 		  op_name, dst, src0, src1);
    879 	instr_out(ctx, i++, "%s\n", instr_prefix);
    880 	instr_out(ctx, i++, "%s\n", instr_prefix);
    881 }
    882 
    883 static void
    884 i915_decode_alu3(struct drm_intel_decode *ctx,
    885 		 int i, char *instr_prefix, const char *op_name)
    886 {
    887 	char dst[100], src0[100], src1[100], src2[100];
    888 
    889 	i915_get_instruction_dst(ctx->data, i, dst, 1);
    890 	i915_get_instruction_src0(ctx->data, i, src0);
    891 	i915_get_instruction_src1(ctx->data, i, src1);
    892 	i915_get_instruction_src2(ctx->data, i, src2);
    893 
    894 	instr_out(ctx, i++, "%s: %s %s, %s, %s, %s\n", instr_prefix,
    895 		  op_name, dst, src0, src1, src2);
    896 	instr_out(ctx, i++, "%s\n", instr_prefix);
    897 	instr_out(ctx, i++, "%s\n", instr_prefix);
    898 }
    899 
    900 static void
    901 i915_decode_tex(struct drm_intel_decode *ctx, int i,
    902 		const char *instr_prefix, const char *tex_name)
    903 {
    904 	uint32_t t0 = ctx->data[i];
    905 	uint32_t t1 = ctx->data[i + 1];
    906 	char dst_name[100];
    907 	char addr_name[100];
    908 	int sampler_nr;
    909 
    910 	i915_get_instruction_dst(ctx->data, i, dst_name, 0);
    911 	i915_get_instruction_addr((t1 >> 24) & 0x7,
    912 				  (t1 >> 17) & 0xf, addr_name);
    913 	sampler_nr = t0 & 0xf;
    914 
    915 	instr_out(ctx, i++, "%s: %s %s, S%d, %s\n", instr_prefix,
    916 		  tex_name, dst_name, sampler_nr, addr_name);
    917 	instr_out(ctx, i++, "%s\n", instr_prefix);
    918 	instr_out(ctx, i++, "%s\n", instr_prefix);
    919 }
    920 
    921 static void
    922 i915_decode_dcl(struct drm_intel_decode *ctx, int i, char *instr_prefix)
    923 {
    924 	uint32_t d0 = ctx->data[i];
    925 	const char *sampletype;
    926 	int dcl_nr = (d0 >> 14) & 0xf;
    927 	const char *dcl_x = d0 & (1 << 10) ? "x" : "";
    928 	const char *dcl_y = d0 & (1 << 11) ? "y" : "";
    929 	const char *dcl_z = d0 & (1 << 12) ? "z" : "";
    930 	const char *dcl_w = d0 & (1 << 13) ? "w" : "";
    931 	char dcl_mask[10];
    932 
    933 	switch ((d0 >> 19) & 0x3) {
    934 	case 1:
    935 		sprintf(dcl_mask, ".%s%s%s%s", dcl_x, dcl_y, dcl_z, dcl_w);
    936 		if (strcmp(dcl_mask, ".") == 0)
    937 			fprintf(out, "bad (empty) dcl mask\n");
    938 
    939 		if (dcl_nr > 10)
    940 			fprintf(out, "bad T%d dcl register number\n", dcl_nr);
    941 		if (dcl_nr < 8) {
    942 			if (strcmp(dcl_mask, ".x") != 0 &&
    943 			    strcmp(dcl_mask, ".xy") != 0 &&
    944 			    strcmp(dcl_mask, ".xz") != 0 &&
    945 			    strcmp(dcl_mask, ".w") != 0 &&
    946 			    strcmp(dcl_mask, ".xyzw") != 0) {
    947 				fprintf(out, "bad T%d.%s dcl mask\n", dcl_nr,
    948 					dcl_mask);
    949 			}
    950 			instr_out(ctx, i++, "%s: DCL T%d%s\n",
    951 				  instr_prefix, dcl_nr, dcl_mask);
    952 		} else {
    953 			if (strcmp(dcl_mask, ".xz") == 0)
    954 				fprintf(out, "errataed bad dcl mask %s\n",
    955 					dcl_mask);
    956 			else if (strcmp(dcl_mask, ".xw") == 0)
    957 				fprintf(out, "errataed bad dcl mask %s\n",
    958 					dcl_mask);
    959 			else if (strcmp(dcl_mask, ".xzw") == 0)
    960 				fprintf(out, "errataed bad dcl mask %s\n",
    961 					dcl_mask);
    962 
    963 			if (dcl_nr == 8) {
    964 				instr_out(ctx, i++,
    965 					  "%s: DCL DIFFUSE%s\n", instr_prefix,
    966 					  dcl_mask);
    967 			} else if (dcl_nr == 9) {
    968 				instr_out(ctx, i++,
    969 					  "%s: DCL SPECULAR%s\n", instr_prefix,
    970 					  dcl_mask);
    971 			} else if (dcl_nr == 10) {
    972 				instr_out(ctx, i++,
    973 					  "%s: DCL FOG%s\n", instr_prefix,
    974 					  dcl_mask);
    975 			}
    976 		}
    977 		instr_out(ctx, i++, "%s\n", instr_prefix);
    978 		instr_out(ctx, i++, "%s\n", instr_prefix);
    979 		break;
    980 	case 3:
    981 		switch ((d0 >> 22) & 0x3) {
    982 		case 0:
    983 			sampletype = "2D";
    984 			break;
    985 		case 1:
    986 			sampletype = "CUBE";
    987 			break;
    988 		case 2:
    989 			sampletype = "3D";
    990 			break;
    991 		default:
    992 			sampletype = "RESERVED";
    993 			break;
    994 		}
    995 		if (dcl_nr > 15)
    996 			fprintf(out, "bad S%d dcl register number\n", dcl_nr);
    997 		instr_out(ctx, i++, "%s: DCL S%d %s\n",
    998 			  instr_prefix, dcl_nr, sampletype);
    999 		instr_out(ctx, i++, "%s\n", instr_prefix);
   1000 		instr_out(ctx, i++, "%s\n", instr_prefix);
   1001 		break;
   1002 	default:
   1003 		instr_out(ctx, i++, "%s: DCL RESERVED%d\n",
   1004 			  instr_prefix, dcl_nr);
   1005 		instr_out(ctx, i++, "%s\n", instr_prefix);
   1006 		instr_out(ctx, i++, "%s\n", instr_prefix);
   1007 	}
   1008 }
   1009 
   1010 static void
   1011 i915_decode_instruction(struct drm_intel_decode *ctx,
   1012 			int i, char *instr_prefix)
   1013 {
   1014 	switch ((ctx->data[i] >> 24) & 0x1f) {
   1015 	case 0x0:
   1016 		instr_out(ctx, i++, "%s: NOP\n", instr_prefix);
   1017 		instr_out(ctx, i++, "%s\n", instr_prefix);
   1018 		instr_out(ctx, i++, "%s\n", instr_prefix);
   1019 		break;
   1020 	case 0x01:
   1021 		i915_decode_alu2(ctx, i, instr_prefix, "ADD");
   1022 		break;
   1023 	case 0x02:
   1024 		i915_decode_alu1(ctx, i, instr_prefix, "MOV");
   1025 		break;
   1026 	case 0x03:
   1027 		i915_decode_alu2(ctx, i, instr_prefix, "MUL");
   1028 		break;
   1029 	case 0x04:
   1030 		i915_decode_alu3(ctx, i, instr_prefix, "MAD");
   1031 		break;
   1032 	case 0x05:
   1033 		i915_decode_alu3(ctx, i, instr_prefix, "DP2ADD");
   1034 		break;
   1035 	case 0x06:
   1036 		i915_decode_alu2(ctx, i, instr_prefix, "DP3");
   1037 		break;
   1038 	case 0x07:
   1039 		i915_decode_alu2(ctx, i, instr_prefix, "DP4");
   1040 		break;
   1041 	case 0x08:
   1042 		i915_decode_alu1(ctx, i, instr_prefix, "FRC");
   1043 		break;
   1044 	case 0x09:
   1045 		i915_decode_alu1(ctx, i, instr_prefix, "RCP");
   1046 		break;
   1047 	case 0x0a:
   1048 		i915_decode_alu1(ctx, i, instr_prefix, "RSQ");
   1049 		break;
   1050 	case 0x0b:
   1051 		i915_decode_alu1(ctx, i, instr_prefix, "EXP");
   1052 		break;
   1053 	case 0x0c:
   1054 		i915_decode_alu1(ctx, i, instr_prefix, "LOG");
   1055 		break;
   1056 	case 0x0d:
   1057 		i915_decode_alu2(ctx, i, instr_prefix, "CMP");
   1058 		break;
   1059 	case 0x0e:
   1060 		i915_decode_alu2(ctx, i, instr_prefix, "MIN");
   1061 		break;
   1062 	case 0x0f:
   1063 		i915_decode_alu2(ctx, i, instr_prefix, "MAX");
   1064 		break;
   1065 	case 0x10:
   1066 		i915_decode_alu1(ctx, i, instr_prefix, "FLR");
   1067 		break;
   1068 	case 0x11:
   1069 		i915_decode_alu1(ctx, i, instr_prefix, "MOD");
   1070 		break;
   1071 	case 0x12:
   1072 		i915_decode_alu1(ctx, i, instr_prefix, "TRC");
   1073 		break;
   1074 	case 0x13:
   1075 		i915_decode_alu2(ctx, i, instr_prefix, "SGE");
   1076 		break;
   1077 	case 0x14:
   1078 		i915_decode_alu2(ctx, i, instr_prefix, "SLT");
   1079 		break;
   1080 	case 0x15:
   1081 		i915_decode_tex(ctx, i, instr_prefix, "TEXLD");
   1082 		break;
   1083 	case 0x16:
   1084 		i915_decode_tex(ctx, i, instr_prefix, "TEXLDP");
   1085 		break;
   1086 	case 0x17:
   1087 		i915_decode_tex(ctx, i, instr_prefix, "TEXLDB");
   1088 		break;
   1089 	case 0x19:
   1090 		i915_decode_dcl(ctx, i, instr_prefix);
   1091 		break;
   1092 	default:
   1093 		instr_out(ctx, i++, "%s: unknown\n", instr_prefix);
   1094 		instr_out(ctx, i++, "%s\n", instr_prefix);
   1095 		instr_out(ctx, i++, "%s\n", instr_prefix);
   1096 		break;
   1097 	}
   1098 }
   1099 
   1100 static const char *
   1101 decode_compare_func(uint32_t op)
   1102 {
   1103 	switch (op & 0x7) {
   1104 	case 0:
   1105 		return "always";
   1106 	case 1:
   1107 		return "never";
   1108 	case 2:
   1109 		return "less";
   1110 	case 3:
   1111 		return "equal";
   1112 	case 4:
   1113 		return "lequal";
   1114 	case 5:
   1115 		return "greater";
   1116 	case 6:
   1117 		return "notequal";
   1118 	case 7:
   1119 		return "gequal";
   1120 	}
   1121 	return "";
   1122 }
   1123 
   1124 static const char *
   1125 decode_stencil_op(uint32_t op)
   1126 {
   1127 	switch (op & 0x7) {
   1128 	case 0:
   1129 		return "keep";
   1130 	case 1:
   1131 		return "zero";
   1132 	case 2:
   1133 		return "replace";
   1134 	case 3:
   1135 		return "incr_sat";
   1136 	case 4:
   1137 		return "decr_sat";
   1138 	case 5:
   1139 		return "greater";
   1140 	case 6:
   1141 		return "incr";
   1142 	case 7:
   1143 		return "decr";
   1144 	}
   1145 	return "";
   1146 }
   1147 
   1148 #if 0
   1149 static const char *
   1150 decode_logic_op(uint32_t op)
   1151 {
   1152 	switch (op & 0xf) {
   1153 	case 0:
   1154 		return "clear";
   1155 	case 1:
   1156 		return "nor";
   1157 	case 2:
   1158 		return "and_inv";
   1159 	case 3:
   1160 		return "copy_inv";
   1161 	case 4:
   1162 		return "and_rvrse";
   1163 	case 5:
   1164 		return "inv";
   1165 	case 6:
   1166 		return "xor";
   1167 	case 7:
   1168 		return "nand";
   1169 	case 8:
   1170 		return "and";
   1171 	case 9:
   1172 		return "equiv";
   1173 	case 10:
   1174 		return "noop";
   1175 	case 11:
   1176 		return "or_inv";
   1177 	case 12:
   1178 		return "copy";
   1179 	case 13:
   1180 		return "or_rvrse";
   1181 	case 14:
   1182 		return "or";
   1183 	case 15:
   1184 		return "set";
   1185 	}
   1186 	return "";
   1187 }
   1188 #endif
   1189 
   1190 static const char *
   1191 decode_blend_fact(uint32_t op)
   1192 {
   1193 	switch (op & 0xf) {
   1194 	case 1:
   1195 		return "zero";
   1196 	case 2:
   1197 		return "one";
   1198 	case 3:
   1199 		return "src_colr";
   1200 	case 4:
   1201 		return "inv_src_colr";
   1202 	case 5:
   1203 		return "src_alpha";
   1204 	case 6:
   1205 		return "inv_src_alpha";
   1206 	case 7:
   1207 		return "dst_alpha";
   1208 	case 8:
   1209 		return "inv_dst_alpha";
   1210 	case 9:
   1211 		return "dst_colr";
   1212 	case 10:
   1213 		return "inv_dst_colr";
   1214 	case 11:
   1215 		return "src_alpha_sat";
   1216 	case 12:
   1217 		return "cnst_colr";
   1218 	case 13:
   1219 		return "inv_cnst_colr";
   1220 	case 14:
   1221 		return "cnst_alpha";
   1222 	case 15:
   1223 		return "inv_const_alpha";
   1224 	}
   1225 	return "";
   1226 }
   1227 
   1228 static const char *
   1229 decode_tex_coord_mode(uint32_t mode)
   1230 {
   1231 	switch (mode & 0x7) {
   1232 	case 0:
   1233 		return "wrap";
   1234 	case 1:
   1235 		return "mirror";
   1236 	case 2:
   1237 		return "clamp_edge";
   1238 	case 3:
   1239 		return "cube";
   1240 	case 4:
   1241 		return "clamp_border";
   1242 	case 5:
   1243 		return "mirror_once";
   1244 	}
   1245 	return "";
   1246 }
   1247 
   1248 static const char *
   1249 decode_sample_filter(uint32_t mode)
   1250 {
   1251 	switch (mode & 0x7) {
   1252 	case 0:
   1253 		return "nearest";
   1254 	case 1:
   1255 		return "linear";
   1256 	case 2:
   1257 		return "anisotropic";
   1258 	case 3:
   1259 		return "4x4_1";
   1260 	case 4:
   1261 		return "4x4_2";
   1262 	case 5:
   1263 		return "4x4_flat";
   1264 	case 6:
   1265 		return "6x5_mono";
   1266 	}
   1267 	return "";
   1268 }
   1269 
   1270 static int
   1271 decode_3d_1d(struct drm_intel_decode *ctx)
   1272 {
   1273 	unsigned int len, i, c, idx, word, map, sampler, instr;
   1274 	const char *format, *zformat, *type;
   1275 	uint32_t opcode;
   1276 	uint32_t *data = ctx->data;
   1277 	uint32_t devid = ctx->devid;
   1278 
   1279 	struct {
   1280 		uint32_t opcode;
   1281 		int i830_only;
   1282 		unsigned int min_len;
   1283 		unsigned int max_len;
   1284 		const char *name;
   1285 	} opcodes_3d_1d[] = {
   1286 		{ 0x86, 0, 4, 4, "3DSTATE_CHROMA_KEY" },
   1287 		{ 0x88, 0, 2, 2, "3DSTATE_CONSTANT_BLEND_COLOR" },
   1288 		{ 0x99, 0, 2, 2, "3DSTATE_DEFAULT_DIFFUSE" },
   1289 		{ 0x9a, 0, 2, 2, "3DSTATE_DEFAULT_SPECULAR" },
   1290 		{ 0x98, 0, 2, 2, "3DSTATE_DEFAULT_Z" },
   1291 		{ 0x97, 0, 2, 2, "3DSTATE_DEPTH_OFFSET_SCALE" },
   1292 		{ 0x9d, 0, 65, 65, "3DSTATE_FILTER_COEFFICIENTS_4X4" },
   1293 		{ 0x9e, 0, 4, 4, "3DSTATE_MONO_FILTER" },
   1294 		{ 0x89, 0, 4, 4, "3DSTATE_FOG_MODE" },
   1295 		{ 0x8f, 0, 2, 16, "3DSTATE_MAP_PALLETE_LOAD_32" },
   1296 		{ 0x83, 0, 2, 2, "3DSTATE_SPAN_STIPPLE" },
   1297 		{ 0x8c, 1, 2, 2, "3DSTATE_MAP_COORD_TRANSFORM_I830" },
   1298 		{ 0x8b, 1, 2, 2, "3DSTATE_MAP_VERTEX_TRANSFORM_I830" },
   1299 		{ 0x8d, 1, 3, 3, "3DSTATE_W_STATE_I830" },
   1300 		{ 0x01, 1, 2, 2, "3DSTATE_COLOR_FACTOR_I830" },
   1301 		{ 0x02, 1, 2, 2, "3DSTATE_MAP_COORD_SETBIND_I830"},
   1302 	}, *opcode_3d_1d;
   1303 
   1304 	opcode = (data[0] & 0x00ff0000) >> 16;
   1305 
   1306 	switch (opcode) {
   1307 	case 0x07:
   1308 		/* This instruction is unusual.  A 0 length means just
   1309 		 * 1 DWORD instead of 2.  The 0 length is specified in
   1310 		 * one place to be unsupported, but stated to be
   1311 		 * required in another, and 0 length LOAD_INDIRECTs
   1312 		 * appear to cause no harm at least.
   1313 		 */
   1314 		instr_out(ctx, 0, "3DSTATE_LOAD_INDIRECT\n");
   1315 		len = (data[0] & 0x000000ff) + 1;
   1316 		i = 1;
   1317 		if (data[0] & (0x01 << 8)) {
   1318 			instr_out(ctx, i++, "SIS.0\n");
   1319 			instr_out(ctx, i++, "SIS.1\n");
   1320 		}
   1321 		if (data[0] & (0x02 << 8)) {
   1322 			instr_out(ctx, i++, "DIS.0\n");
   1323 		}
   1324 		if (data[0] & (0x04 << 8)) {
   1325 			instr_out(ctx, i++, "SSB.0\n");
   1326 			instr_out(ctx, i++, "SSB.1\n");
   1327 		}
   1328 		if (data[0] & (0x08 << 8)) {
   1329 			instr_out(ctx, i++, "MSB.0\n");
   1330 			instr_out(ctx, i++, "MSB.1\n");
   1331 		}
   1332 		if (data[0] & (0x10 << 8)) {
   1333 			instr_out(ctx, i++, "PSP.0\n");
   1334 			instr_out(ctx, i++, "PSP.1\n");
   1335 		}
   1336 		if (data[0] & (0x20 << 8)) {
   1337 			instr_out(ctx, i++, "PSC.0\n");
   1338 			instr_out(ctx, i++, "PSC.1\n");
   1339 		}
   1340 		if (len != i) {
   1341 			fprintf(out, "Bad count in 3DSTATE_LOAD_INDIRECT\n");
   1342 			return len;
   1343 		}
   1344 		return len;
   1345 	case 0x04:
   1346 		instr_out(ctx, 0,
   1347 			  "3DSTATE_LOAD_STATE_IMMEDIATE_1\n");
   1348 		len = (data[0] & 0x0000000f) + 2;
   1349 		i = 1;
   1350 		for (word = 0; word <= 8; word++) {
   1351 			if (data[0] & (1 << (4 + word))) {
   1352 				/* save vertex state for decode */
   1353 				if (!IS_GEN2(devid)) {
   1354 					int tex_num;
   1355 
   1356 					if (word == 2) {
   1357 						saved_s2_set = 1;
   1358 						saved_s2 = data[i];
   1359 					}
   1360 					if (word == 4) {
   1361 						saved_s4_set = 1;
   1362 						saved_s4 = data[i];
   1363 					}
   1364 
   1365 					switch (word) {
   1366 					case 0:
   1367 						instr_out(ctx, i,
   1368 							  "S0: vbo offset: 0x%08x%s\n",
   1369 							  data[i] & (~1),
   1370 							  data[i] & 1 ?
   1371 							  ", auto cache invalidate disabled"
   1372 							  : "");
   1373 						break;
   1374 					case 1:
   1375 						instr_out(ctx, i,
   1376 							  "S1: vertex width: %i, vertex pitch: %i\n",
   1377 							  (data[i] >> 24) &
   1378 							  0x3f,
   1379 							  (data[i] >> 16) &
   1380 							  0x3f);
   1381 						break;
   1382 					case 2:
   1383 						instr_out(ctx, i,
   1384 							  "S2: texcoord formats: ");
   1385 						for (tex_num = 0;
   1386 						     tex_num < 8; tex_num++) {
   1387 							switch ((data[i] >>
   1388 								 tex_num *
   1389 								 4) & 0xf) {
   1390 							case 0:
   1391 								fprintf(out,
   1392 									"%i=2D ",
   1393 									tex_num);
   1394 								break;
   1395 							case 1:
   1396 								fprintf(out,
   1397 									"%i=3D ",
   1398 									tex_num);
   1399 								break;
   1400 							case 2:
   1401 								fprintf(out,
   1402 									"%i=4D ",
   1403 									tex_num);
   1404 								break;
   1405 							case 3:
   1406 								fprintf(out,
   1407 									"%i=1D ",
   1408 									tex_num);
   1409 								break;
   1410 							case 4:
   1411 								fprintf(out,
   1412 									"%i=2D_16 ",
   1413 									tex_num);
   1414 								break;
   1415 							case 5:
   1416 								fprintf(out,
   1417 									"%i=4D_16 ",
   1418 									tex_num);
   1419 								break;
   1420 							case 0xf:
   1421 								fprintf(out,
   1422 									"%i=NP ",
   1423 									tex_num);
   1424 								break;
   1425 							}
   1426 						}
   1427 						fprintf(out, "\n");
   1428 
   1429 						break;
   1430 					case 3:
   1431 						instr_out(ctx, i,
   1432 							  "S3: not documented\n");
   1433 						break;
   1434 					case 4:
   1435 						{
   1436 							const char *cullmode = "";
   1437 							const char *vfmt_xyzw = "";
   1438 							switch ((data[i] >> 13)
   1439 								& 0x3) {
   1440 							case 0:
   1441 								cullmode =
   1442 								    "both";
   1443 								break;
   1444 							case 1:
   1445 								cullmode =
   1446 								    "none";
   1447 								break;
   1448 							case 2:
   1449 								cullmode = "cw";
   1450 								break;
   1451 							case 3:
   1452 								cullmode =
   1453 								    "ccw";
   1454 								break;
   1455 							}
   1456 							switch (data[i] &
   1457 								(7 << 6 | 1 <<
   1458 								 2)) {
   1459 							case 1 << 6:
   1460 								vfmt_xyzw =
   1461 								    "XYZ,";
   1462 								break;
   1463 							case 2 << 6:
   1464 								vfmt_xyzw =
   1465 								    "XYZW,";
   1466 								break;
   1467 							case 3 << 6:
   1468 								vfmt_xyzw =
   1469 								    "XY,";
   1470 								break;
   1471 							case 4 << 6:
   1472 								vfmt_xyzw =
   1473 								    "XYW,";
   1474 								break;
   1475 							case 1 << 6 | 1 << 2:
   1476 								vfmt_xyzw =
   1477 								    "XYZF,";
   1478 								break;
   1479 							case 2 << 6 | 1 << 2:
   1480 								vfmt_xyzw =
   1481 								    "XYZWF,";
   1482 								break;
   1483 							case 3 << 6 | 1 << 2:
   1484 								vfmt_xyzw =
   1485 								    "XYF,";
   1486 								break;
   1487 							case 4 << 6 | 1 << 2:
   1488 								vfmt_xyzw =
   1489 								    "XYWF,";
   1490 								break;
   1491 							}
   1492 							instr_out(ctx, i,
   1493 								  "S4: point_width=%i, line_width=%.1f,"
   1494 								  "%s%s%s%s%s cullmode=%s, vfmt=%s%s%s%s%s%s "
   1495 								  "%s%s%s%s%s\n",
   1496 								  (data[i] >>
   1497 								   23) & 0x1ff,
   1498 								  ((data[i] >>
   1499 								    19) & 0xf) /
   1500 								  2.0,
   1501 								  data[i] & (0xf
   1502 									     <<
   1503 									     15)
   1504 								  ?
   1505 								  " flatshade="
   1506 								  : "",
   1507 								  data[i] & (1
   1508 									     <<
   1509 									     18)
   1510 								  ? "Alpha," :
   1511 								  "",
   1512 								  data[i] & (1
   1513 									     <<
   1514 									     17)
   1515 								  ? "Fog," : "",
   1516 								  data[i] & (1
   1517 									     <<
   1518 									     16)
   1519 								  ? "Specular,"
   1520 								  : "",
   1521 								  data[i] & (1
   1522 									     <<
   1523 									     15)
   1524 								  ? "Color," :
   1525 								  "", cullmode,
   1526 								  data[i] & (1
   1527 									     <<
   1528 									     12)
   1529 								  ?
   1530 								  "PointWidth,"
   1531 								  : "",
   1532 								  data[i] & (1
   1533 									     <<
   1534 									     11)
   1535 								  ? "SpecFog," :
   1536 								  "",
   1537 								  data[i] & (1
   1538 									     <<
   1539 									     10)
   1540 								  ? "Color," :
   1541 								  "",
   1542 								  data[i] & (1
   1543 									     <<
   1544 									     9)
   1545 								  ? "DepthOfs,"
   1546 								  : "",
   1547 								  vfmt_xyzw,
   1548 								  data[i] & (1
   1549 									     <<
   1550 									     9)
   1551 								  ? "FogParam,"
   1552 								  : "",
   1553 								  data[i] & (1
   1554 									     <<
   1555 									     5)
   1556 								  ?
   1557 								  "force default diffuse, "
   1558 								  : "",
   1559 								  data[i] & (1
   1560 									     <<
   1561 									     4)
   1562 								  ?
   1563 								  "force default specular, "
   1564 								  : "",
   1565 								  data[i] & (1
   1566 									     <<
   1567 									     3)
   1568 								  ?
   1569 								  "local depth ofs enable, "
   1570 								  : "",
   1571 								  data[i] & (1
   1572 									     <<
   1573 									     1)
   1574 								  ?
   1575 								  "point sprite enable, "
   1576 								  : "",
   1577 								  data[i] & (1
   1578 									     <<
   1579 									     0)
   1580 								  ?
   1581 								  "line AA enable, "
   1582 								  : "");
   1583 							break;
   1584 						}
   1585 					case 5:
   1586 						{
   1587 							instr_out(ctx, i,
   1588 								  "S5:%s%s%s%s%s"
   1589 								  "%s%s%s%s stencil_ref=0x%x, stencil_test=%s, "
   1590 								  "stencil_fail=%s, stencil_pass_z_fail=%s, "
   1591 								  "stencil_pass_z_pass=%s, %s%s%s%s\n",
   1592 								  data[i] & (0xf
   1593 									     <<
   1594 									     28)
   1595 								  ?
   1596 								  " write_disable="
   1597 								  : "",
   1598 								  data[i] & (1
   1599 									     <<
   1600 									     31)
   1601 								  ? "Alpha," :
   1602 								  "",
   1603 								  data[i] & (1
   1604 									     <<
   1605 									     30)
   1606 								  ? "Red," : "",
   1607 								  data[i] & (1
   1608 									     <<
   1609 									     29)
   1610 								  ? "Green," :
   1611 								  "",
   1612 								  data[i] & (1
   1613 									     <<
   1614 									     28)
   1615 								  ? "Blue," :
   1616 								  "",
   1617 								  data[i] & (1
   1618 									     <<
   1619 									     27)
   1620 								  ?
   1621 								  " force default point size,"
   1622 								  : "",
   1623 								  data[i] & (1
   1624 									     <<
   1625 									     26)
   1626 								  ?
   1627 								  " last pixel enable,"
   1628 								  : "",
   1629 								  data[i] & (1
   1630 									     <<
   1631 									     25)
   1632 								  ?
   1633 								  " global depth ofs enable,"
   1634 								  : "",
   1635 								  data[i] & (1
   1636 									     <<
   1637 									     24)
   1638 								  ?
   1639 								  " fog enable,"
   1640 								  : "",
   1641 								  (data[i] >>
   1642 								   16) & 0xff,
   1643 								  decode_compare_func
   1644 								  (data[i] >>
   1645 								   13),
   1646 								  decode_stencil_op
   1647 								  (data[i] >>
   1648 								   10),
   1649 								  decode_stencil_op
   1650 								  (data[i] >>
   1651 								   7),
   1652 								  decode_stencil_op
   1653 								  (data[i] >>
   1654 								   4),
   1655 								  data[i] & (1
   1656 									     <<
   1657 									     3)
   1658 								  ?
   1659 								  "stencil write enable, "
   1660 								  : "",
   1661 								  data[i] & (1
   1662 									     <<
   1663 									     2)
   1664 								  ?
   1665 								  "stencil test enable, "
   1666 								  : "",
   1667 								  data[i] & (1
   1668 									     <<
   1669 									     1)
   1670 								  ?
   1671 								  "color dither enable, "
   1672 								  : "",
   1673 								  data[i] & (1
   1674 									     <<
   1675 									     0)
   1676 								  ?
   1677 								  "logicop enable, "
   1678 								  : "");
   1679 						}
   1680 						break;
   1681 					case 6:
   1682 						instr_out(ctx, i,
   1683 							  "S6: %salpha_test=%s, alpha_ref=0x%x, "
   1684 							  "depth_test=%s, %ssrc_blnd_fct=%s, dst_blnd_fct=%s, "
   1685 							  "%s%stristrip_provoking_vertex=%i\n",
   1686 							  data[i] & (1 << 31) ?
   1687 							  "alpha test enable, "
   1688 							  : "",
   1689 							  decode_compare_func
   1690 							  (data[i] >> 28),
   1691 							  data[i] & (0xff <<
   1692 								     20),
   1693 							  decode_compare_func
   1694 							  (data[i] >> 16),
   1695 							  data[i] & (1 << 15) ?
   1696 							  "cbuf blend enable, "
   1697 							  : "",
   1698 							  decode_blend_fact(data
   1699 									    [i]
   1700 									    >>
   1701 									    8),
   1702 							  decode_blend_fact(data
   1703 									    [i]
   1704 									    >>
   1705 									    4),
   1706 							  data[i] & (1 << 3) ?
   1707 							  "depth write enable, "
   1708 							  : "",
   1709 							  data[i] & (1 << 2) ?
   1710 							  "cbuf write enable, "
   1711 							  : "",
   1712 							  data[i] & (0x3));
   1713 						break;
   1714 					case 7:
   1715 						instr_out(ctx, i,
   1716 							  "S7: depth offset constant: 0x%08x\n",
   1717 							  data[i]);
   1718 						break;
   1719 					}
   1720 				} else {
   1721 					instr_out(ctx, i,
   1722 						  "S%d: 0x%08x\n", word, data[i]);
   1723 				}
   1724 				i++;
   1725 			}
   1726 		}
   1727 		if (len != i) {
   1728 			fprintf(out,
   1729 				"Bad count in 3DSTATE_LOAD_STATE_IMMEDIATE_1\n");
   1730 		}
   1731 		return len;
   1732 	case 0x03:
   1733 		instr_out(ctx, 0,
   1734 			  "3DSTATE_LOAD_STATE_IMMEDIATE_2\n");
   1735 		len = (data[0] & 0x0000000f) + 2;
   1736 		i = 1;
   1737 		for (word = 6; word <= 14; word++) {
   1738 			if (data[0] & (1 << word)) {
   1739 				if (word == 6)
   1740 					instr_out(ctx, i++,
   1741 						  "TBCF\n");
   1742 				else if (word >= 7 && word <= 10) {
   1743 					instr_out(ctx, i++,
   1744 						  "TB%dC\n", word - 7);
   1745 					instr_out(ctx, i++,
   1746 						  "TB%dA\n", word - 7);
   1747 				} else if (word >= 11 && word <= 14) {
   1748 					instr_out(ctx, i,
   1749 						  "TM%dS0: offset=0x%08x, %s\n",
   1750 						  word - 11,
   1751 						  data[i] & 0xfffffffe,
   1752 						  data[i] & 1 ? "use fence" :
   1753 						  "");
   1754 					i++;
   1755 					instr_out(ctx, i,
   1756 						  "TM%dS1: height=%i, width=%i, %s\n",
   1757 						  word - 11, data[i] >> 21,
   1758 						  (data[i] >> 10) & 0x3ff,
   1759 						  data[i] & 2 ? (data[i] & 1 ?
   1760 								 "y-tiled" :
   1761 								 "x-tiled") :
   1762 						  "");
   1763 					i++;
   1764 					instr_out(ctx, i,
   1765 						  "TM%dS2: pitch=%i, \n",
   1766 						  word - 11,
   1767 						  ((data[i] >> 21) + 1) * 4);
   1768 					i++;
   1769 					instr_out(ctx, i++,
   1770 						  "TM%dS3\n", word - 11);
   1771 					instr_out(ctx, i++,
   1772 						  "TM%dS4: dflt color\n",
   1773 						  word - 11);
   1774 				}
   1775 			}
   1776 		}
   1777 		if (len != i) {
   1778 			fprintf(out,
   1779 				"Bad count in 3DSTATE_LOAD_STATE_IMMEDIATE_2\n");
   1780 		}
   1781 		return len;
   1782 	case 0x00:
   1783 		instr_out(ctx, 0, "3DSTATE_MAP_STATE\n");
   1784 		len = (data[0] & 0x0000003f) + 2;
   1785 		instr_out(ctx, 1, "mask\n");
   1786 
   1787 		i = 2;
   1788 		for (map = 0; map <= 15; map++) {
   1789 			if (data[1] & (1 << map)) {
   1790 				int width, height, pitch, dword;
   1791 				const char *tiling;
   1792 
   1793 				dword = data[i];
   1794 				instr_out(ctx, i++,
   1795 					  "map %d MS2 %s%s%s\n", map,
   1796 					  dword & (1 << 31) ?
   1797 					  "untrusted surface, " : "",
   1798 					  dword & (1 << 1) ?
   1799 					  "vertical line stride enable, " : "",
   1800 					  dword & (1 << 0) ?
   1801 					  "vertical ofs enable, " : "");
   1802 
   1803 				dword = data[i];
   1804 				width = ((dword >> 10) & ((1 << 11) - 1)) + 1;
   1805 				height = ((dword >> 21) & ((1 << 11) - 1)) + 1;
   1806 
   1807 				tiling = "none";
   1808 				if (dword & (1 << 2))
   1809 					tiling = "fenced";
   1810 				else if (dword & (1 << 1))
   1811 					tiling = dword & (1 << 0) ? "Y" : "X";
   1812 				type = " BAD";
   1813 				format = "BAD";
   1814 				switch ((dword >> 7) & 0x7) {
   1815 				case 1:
   1816 					type = "8b";
   1817 					switch ((dword >> 3) & 0xf) {
   1818 					case 0:
   1819 						format = "I";
   1820 						break;
   1821 					case 1:
   1822 						format = "L";
   1823 						break;
   1824 					case 4:
   1825 						format = "A";
   1826 						break;
   1827 					case 5:
   1828 						format = " mono";
   1829 						break;
   1830 					}
   1831 					break;
   1832 				case 2:
   1833 					type = "16b";
   1834 					switch ((dword >> 3) & 0xf) {
   1835 					case 0:
   1836 						format = " rgb565";
   1837 						break;
   1838 					case 1:
   1839 						format = " argb1555";
   1840 						break;
   1841 					case 2:
   1842 						format = " argb4444";
   1843 						break;
   1844 					case 5:
   1845 						format = " ay88";
   1846 						break;
   1847 					case 6:
   1848 						format = " bump655";
   1849 						break;
   1850 					case 7:
   1851 						format = "I";
   1852 						break;
   1853 					case 8:
   1854 						format = "L";
   1855 						break;
   1856 					case 9:
   1857 						format = "A";
   1858 						break;
   1859 					}
   1860 					break;
   1861 				case 3:
   1862 					type = "32b";
   1863 					switch ((dword >> 3) & 0xf) {
   1864 					case 0:
   1865 						format = " argb8888";
   1866 						break;
   1867 					case 1:
   1868 						format = " abgr8888";
   1869 						break;
   1870 					case 2:
   1871 						format = " xrgb8888";
   1872 						break;
   1873 					case 3:
   1874 						format = " xbgr8888";
   1875 						break;
   1876 					case 4:
   1877 						format = " qwvu8888";
   1878 						break;
   1879 					case 5:
   1880 						format = " axvu8888";
   1881 						break;
   1882 					case 6:
   1883 						format = " lxvu8888";
   1884 						break;
   1885 					case 7:
   1886 						format = " xlvu8888";
   1887 						break;
   1888 					case 8:
   1889 						format = " argb2101010";
   1890 						break;
   1891 					case 9:
   1892 						format = " abgr2101010";
   1893 						break;
   1894 					case 10:
   1895 						format = " awvu2101010";
   1896 						break;
   1897 					case 11:
   1898 						format = " gr1616";
   1899 						break;
   1900 					case 12:
   1901 						format = " vu1616";
   1902 						break;
   1903 					case 13:
   1904 						format = " xI824";
   1905 						break;
   1906 					case 14:
   1907 						format = " xA824";
   1908 						break;
   1909 					case 15:
   1910 						format = " xL824";
   1911 						break;
   1912 					}
   1913 					break;
   1914 				case 5:
   1915 					type = "422";
   1916 					switch ((dword >> 3) & 0xf) {
   1917 					case 0:
   1918 						format = " yuv_swapy";
   1919 						break;
   1920 					case 1:
   1921 						format = " yuv";
   1922 						break;
   1923 					case 2:
   1924 						format = " yuv_swapuv";
   1925 						break;
   1926 					case 3:
   1927 						format = " yuv_swapuvy";
   1928 						break;
   1929 					}
   1930 					break;
   1931 				case 6:
   1932 					type = "compressed";
   1933 					switch ((dword >> 3) & 0x7) {
   1934 					case 0:
   1935 						format = " dxt1";
   1936 						break;
   1937 					case 1:
   1938 						format = " dxt2_3";
   1939 						break;
   1940 					case 2:
   1941 						format = " dxt4_5";
   1942 						break;
   1943 					case 3:
   1944 						format = " fxt1";
   1945 						break;
   1946 					case 4:
   1947 						format = " dxt1_rb";
   1948 						break;
   1949 					}
   1950 					break;
   1951 				case 7:
   1952 					type = "4b indexed";
   1953 					switch ((dword >> 3) & 0xf) {
   1954 					case 7:
   1955 						format = " argb8888";
   1956 						break;
   1957 					}
   1958 					break;
   1959 				}
   1960 				dword = data[i];
   1961 				instr_out(ctx, i++,
   1962 					  "map %d MS3 [width=%d, height=%d, format=%s%s, tiling=%s%s]\n",
   1963 					  map, width, height, type, format,
   1964 					  tiling,
   1965 					  dword & (1 << 9) ? " palette select" :
   1966 					  "");
   1967 
   1968 				dword = data[i];
   1969 				pitch =
   1970 				    4 * (((dword >> 21) & ((1 << 11) - 1)) + 1);
   1971 				instr_out(ctx, i++,
   1972 					  "map %d MS4 [pitch=%d, max_lod=%i, vol_depth=%i, cube_face_ena=%x, %s]\n",
   1973 					  map, pitch, (dword >> 9) & 0x3f,
   1974 					  dword & 0xff, (dword >> 15) & 0x3f,
   1975 					  dword & (1 << 8) ? "miplayout legacy"
   1976 					  : "miplayout right");
   1977 			}
   1978 		}
   1979 		if (len != i) {
   1980 			fprintf(out, "Bad count in 3DSTATE_MAP_STATE\n");
   1981 			return len;
   1982 		}
   1983 		return len;
   1984 	case 0x06:
   1985 		instr_out(ctx, 0,
   1986 			  "3DSTATE_PIXEL_SHADER_CONSTANTS\n");
   1987 		len = (data[0] & 0x000000ff) + 2;
   1988 
   1989 		i = 2;
   1990 		for (c = 0; c <= 31; c++) {
   1991 			if (data[1] & (1 << c)) {
   1992 				instr_out(ctx, i, "C%d.X = %f\n", c,
   1993 					  int_as_float(data[i]));
   1994 				i++;
   1995 				instr_out(ctx, i, "C%d.Y = %f\n",
   1996 					  c, int_as_float(data[i]));
   1997 				i++;
   1998 				instr_out(ctx, i, "C%d.Z = %f\n",
   1999 					  c, int_as_float(data[i]));
   2000 				i++;
   2001 				instr_out(ctx, i, "C%d.W = %f\n",
   2002 					  c, int_as_float(data[i]));
   2003 				i++;
   2004 			}
   2005 		}
   2006 		if (len != i) {
   2007 			fprintf(out,
   2008 				"Bad count in 3DSTATE_PIXEL_SHADER_CONSTANTS\n");
   2009 		}
   2010 		return len;
   2011 	case 0x05:
   2012 		instr_out(ctx, 0, "3DSTATE_PIXEL_SHADER_PROGRAM\n");
   2013 		len = (data[0] & 0x000000ff) + 2;
   2014 		if ((len - 1) % 3 != 0 || len > 370) {
   2015 			fprintf(out,
   2016 				"Bad count in 3DSTATE_PIXEL_SHADER_PROGRAM\n");
   2017 		}
   2018 		i = 1;
   2019 		for (instr = 0; instr < (len - 1) / 3; instr++) {
   2020 			char instr_prefix[10];
   2021 
   2022 			sprintf(instr_prefix, "PS%03d", instr);
   2023 			i915_decode_instruction(ctx, i,
   2024 						instr_prefix);
   2025 			i += 3;
   2026 		}
   2027 		return len;
   2028 	case 0x01:
   2029 		if (IS_GEN2(devid))
   2030 			break;
   2031 		instr_out(ctx, 0, "3DSTATE_SAMPLER_STATE\n");
   2032 		instr_out(ctx, 1, "mask\n");
   2033 		len = (data[0] & 0x0000003f) + 2;
   2034 		i = 2;
   2035 		for (sampler = 0; sampler <= 15; sampler++) {
   2036 			if (data[1] & (1 << sampler)) {
   2037 				uint32_t dword;
   2038 				const char *mip_filter = "";
   2039 
   2040 				dword = data[i];
   2041 				switch ((dword >> 20) & 0x3) {
   2042 				case 0:
   2043 					mip_filter = "none";
   2044 					break;
   2045 				case 1:
   2046 					mip_filter = "nearest";
   2047 					break;
   2048 				case 3:
   2049 					mip_filter = "linear";
   2050 					break;
   2051 				}
   2052 				instr_out(ctx, i++,
   2053 					  "sampler %d SS2:%s%s%s "
   2054 					  "base_mip_level=%i, mip_filter=%s, mag_filter=%s, min_filter=%s "
   2055 					  "lod_bias=%.2f,%s max_aniso=%i, shadow_func=%s\n",
   2056 					  sampler,
   2057 					  dword & (1 << 31) ? " reverse gamma,"
   2058 					  : "",
   2059 					  dword & (1 << 30) ? " packed2planar,"
   2060 					  : "",
   2061 					  dword & (1 << 29) ?
   2062 					  " colorspace conversion," : "",
   2063 					  (dword >> 22) & 0x1f, mip_filter,
   2064 					  decode_sample_filter(dword >> 17),
   2065 					  decode_sample_filter(dword >> 14),
   2066 					  ((dword >> 5) & 0x1ff) / (0x10 * 1.0),
   2067 					  dword & (1 << 4) ? " shadow," : "",
   2068 					  dword & (1 << 3) ? 4 : 2,
   2069 					  decode_compare_func(dword));
   2070 				dword = data[i];
   2071 				instr_out(ctx, i++,
   2072 					  "sampler %d SS3: min_lod=%.2f,%s "
   2073 					  "tcmode_x=%s, tcmode_y=%s, tcmode_z=%s,%s texmap_idx=%i,%s\n",
   2074 					  sampler,
   2075 					  ((dword >> 24) & 0xff) / (0x10 * 1.0),
   2076 					  dword & (1 << 17) ?
   2077 					  " kill pixel enable," : "",
   2078 					  decode_tex_coord_mode(dword >> 12),
   2079 					  decode_tex_coord_mode(dword >> 9),
   2080 					  decode_tex_coord_mode(dword >> 6),
   2081 					  dword & (1 << 5) ?
   2082 					  " normalized coords," : "",
   2083 					  (dword >> 1) & 0xf,
   2084 					  dword & (1 << 0) ? " deinterlacer," :
   2085 					  "");
   2086 				dword = data[i];
   2087 				instr_out(ctx, i++,
   2088 					  "sampler %d SS4: border color\n",
   2089 					  sampler);
   2090 			}
   2091 		}
   2092 		if (len != i) {
   2093 			fprintf(out, "Bad count in 3DSTATE_SAMPLER_STATE\n");
   2094 		}
   2095 		return len;
   2096 	case 0x85:
   2097 		len = (data[0] & 0x0000000f) + 2;
   2098 
   2099 		if (len != 2)
   2100 			fprintf(out,
   2101 				"Bad count in 3DSTATE_DEST_BUFFER_VARIABLES\n");
   2102 
   2103 		instr_out(ctx, 0,
   2104 			  "3DSTATE_DEST_BUFFER_VARIABLES\n");
   2105 
   2106 		switch ((data[1] >> 8) & 0xf) {
   2107 		case 0x0:
   2108 			format = "g8";
   2109 			break;
   2110 		case 0x1:
   2111 			format = "x1r5g5b5";
   2112 			break;
   2113 		case 0x2:
   2114 			format = "r5g6b5";
   2115 			break;
   2116 		case 0x3:
   2117 			format = "a8r8g8b8";
   2118 			break;
   2119 		case 0x4:
   2120 			format = "ycrcb_swapy";
   2121 			break;
   2122 		case 0x5:
   2123 			format = "ycrcb_normal";
   2124 			break;
   2125 		case 0x6:
   2126 			format = "ycrcb_swapuv";
   2127 			break;
   2128 		case 0x7:
   2129 			format = "ycrcb_swapuvy";
   2130 			break;
   2131 		case 0x8:
   2132 			format = "a4r4g4b4";
   2133 			break;
   2134 		case 0x9:
   2135 			format = "a1r5g5b5";
   2136 			break;
   2137 		case 0xa:
   2138 			format = "a2r10g10b10";
   2139 			break;
   2140 		default:
   2141 			format = "BAD";
   2142 			break;
   2143 		}
   2144 		switch ((data[1] >> 2) & 0x3) {
   2145 		case 0x0:
   2146 			zformat = "u16";
   2147 			break;
   2148 		case 0x1:
   2149 			zformat = "f16";
   2150 			break;
   2151 		case 0x2:
   2152 			zformat = "u24x8";
   2153 			break;
   2154 		default:
   2155 			zformat = "BAD";
   2156 			break;
   2157 		}
   2158 		instr_out(ctx, 1,
   2159 			  "%s format, %s depth format, early Z %sabled\n",
   2160 			  format, zformat,
   2161 			  (data[1] & (1 << 31)) ? "en" : "dis");
   2162 		return len;
   2163 
   2164 	case 0x8e:
   2165 		{
   2166 			const char *name, *tiling;
   2167 
   2168 			len = (data[0] & 0x0000000f) + 2;
   2169 			if (len != 3)
   2170 				fprintf(out,
   2171 					"Bad count in 3DSTATE_BUFFER_INFO\n");
   2172 
   2173 			switch ((data[1] >> 24) & 0x7) {
   2174 			case 0x3:
   2175 				name = "color";
   2176 				break;
   2177 			case 0x7:
   2178 				name = "depth";
   2179 				break;
   2180 			default:
   2181 				name = "unknown";
   2182 				break;
   2183 			}
   2184 
   2185 			tiling = "none";
   2186 			if (data[1] & (1 << 23))
   2187 				tiling = "fenced";
   2188 			else if (data[1] & (1 << 22))
   2189 				tiling = data[1] & (1 << 21) ? "Y" : "X";
   2190 
   2191 			instr_out(ctx, 0, "3DSTATE_BUFFER_INFO\n");
   2192 			instr_out(ctx, 1,
   2193 				  "%s, tiling = %s, pitch=%d\n", name, tiling,
   2194 				  data[1] & 0xffff);
   2195 
   2196 			instr_out(ctx, 2, "address\n");
   2197 			return len;
   2198 		}
   2199 	case 0x81:
   2200 		len = (data[0] & 0x0000000f) + 2;
   2201 
   2202 		if (len != 3)
   2203 			fprintf(out,
   2204 				"Bad count in 3DSTATE_SCISSOR_RECTANGLE\n");
   2205 
   2206 		instr_out(ctx, 0, "3DSTATE_SCISSOR_RECTANGLE\n");
   2207 		instr_out(ctx, 1, "(%d,%d)\n",
   2208 			  data[1] & 0xffff, data[1] >> 16);
   2209 		instr_out(ctx, 2, "(%d,%d)\n",
   2210 			  data[2] & 0xffff, data[2] >> 16);
   2211 
   2212 		return len;
   2213 	case 0x80:
   2214 		len = (data[0] & 0x0000000f) + 2;
   2215 
   2216 		if (len != 5)
   2217 			fprintf(out,
   2218 				"Bad count in 3DSTATE_DRAWING_RECTANGLE\n");
   2219 
   2220 		instr_out(ctx, 0, "3DSTATE_DRAWING_RECTANGLE\n");
   2221 		instr_out(ctx, 1, "%s\n",
   2222 			  data[1] & (1 << 30) ? "depth ofs disabled " : "");
   2223 		instr_out(ctx, 2, "(%d,%d)\n",
   2224 			  data[2] & 0xffff, data[2] >> 16);
   2225 		instr_out(ctx, 3, "(%d,%d)\n",
   2226 			  data[3] & 0xffff, data[3] >> 16);
   2227 		instr_out(ctx, 4, "(%d,%d)\n",
   2228 			  data[4] & 0xffff, data[4] >> 16);
   2229 
   2230 		return len;
   2231 	case 0x9c:
   2232 		len = (data[0] & 0x0000000f) + 2;
   2233 
   2234 		if (len != 7)
   2235 			fprintf(out, "Bad count in 3DSTATE_CLEAR_PARAMETERS\n");
   2236 
   2237 		instr_out(ctx, 0, "3DSTATE_CLEAR_PARAMETERS\n");
   2238 		instr_out(ctx, 1, "prim_type=%s, clear=%s%s%s\n",
   2239 			  data[1] & (1 << 16) ? "CLEAR_RECT" : "ZONE_INIT",
   2240 			  data[1] & (1 << 2) ? "color," : "",
   2241 			  data[1] & (1 << 1) ? "depth," : "",
   2242 			  data[1] & (1 << 0) ? "stencil," : "");
   2243 		instr_out(ctx, 2, "clear color\n");
   2244 		instr_out(ctx, 3, "clear depth/stencil\n");
   2245 		instr_out(ctx, 4, "color value (rgba8888)\n");
   2246 		instr_out(ctx, 5, "depth value %f\n",
   2247 			  int_as_float(data[5]));
   2248 		instr_out(ctx, 6, "clear stencil\n");
   2249 		return len;
   2250 	}
   2251 
   2252 	for (idx = 0; idx < ARRAY_SIZE(opcodes_3d_1d); idx++) {
   2253 		opcode_3d_1d = &opcodes_3d_1d[idx];
   2254 		if (opcode_3d_1d->i830_only && !IS_GEN2(devid))
   2255 			continue;
   2256 
   2257 		if (((data[0] & 0x00ff0000) >> 16) == opcode_3d_1d->opcode) {
   2258 			len = 1;
   2259 
   2260 			instr_out(ctx, 0, "%s\n",
   2261 				  opcode_3d_1d->name);
   2262 			if (opcode_3d_1d->max_len > 1) {
   2263 				len = (data[0] & 0x0000ffff) + 2;
   2264 				if (len < opcode_3d_1d->min_len ||
   2265 				    len > opcode_3d_1d->max_len) {
   2266 					fprintf(out, "Bad count in %s\n",
   2267 						opcode_3d_1d->name);
   2268 				}
   2269 			}
   2270 
   2271 			for (i = 1; i < len; i++) {
   2272 				instr_out(ctx, i, "dword %d\n", i);
   2273 			}
   2274 
   2275 			return len;
   2276 		}
   2277 	}
   2278 
   2279 	instr_out(ctx, 0, "3D UNKNOWN: 3d_1d opcode = 0x%x\n",
   2280 		  opcode);
   2281 	return 1;
   2282 }
   2283 
   2284 static int
   2285 decode_3d_primitive(struct drm_intel_decode *ctx)
   2286 {
   2287 	uint32_t *data = ctx->data;
   2288 	uint32_t count = ctx->count;
   2289 	char immediate = (data[0] & (1 << 23)) == 0;
   2290 	unsigned int len, i, j, ret;
   2291 	const char *primtype;
   2292 	int original_s2 = saved_s2;
   2293 	int original_s4 = saved_s4;
   2294 
   2295 	switch ((data[0] >> 18) & 0xf) {
   2296 	case 0x0:
   2297 		primtype = "TRILIST";
   2298 		break;
   2299 	case 0x1:
   2300 		primtype = "TRISTRIP";
   2301 		break;
   2302 	case 0x2:
   2303 		primtype = "TRISTRIP_REVERSE";
   2304 		break;
   2305 	case 0x3:
   2306 		primtype = "TRIFAN";
   2307 		break;
   2308 	case 0x4:
   2309 		primtype = "POLYGON";
   2310 		break;
   2311 	case 0x5:
   2312 		primtype = "LINELIST";
   2313 		break;
   2314 	case 0x6:
   2315 		primtype = "LINESTRIP";
   2316 		break;
   2317 	case 0x7:
   2318 		primtype = "RECTLIST";
   2319 		break;
   2320 	case 0x8:
   2321 		primtype = "POINTLIST";
   2322 		break;
   2323 	case 0x9:
   2324 		primtype = "DIB";
   2325 		break;
   2326 	case 0xa:
   2327 		primtype = "CLEAR_RECT";
   2328 		saved_s4 = 3 << 6;
   2329 		saved_s2 = ~0;
   2330 		break;
   2331 	default:
   2332 		primtype = "unknown";
   2333 		break;
   2334 	}
   2335 
   2336 	/* XXX: 3DPRIM_DIB not supported */
   2337 	if (immediate) {
   2338 		len = (data[0] & 0x0003ffff) + 2;
   2339 		instr_out(ctx, 0, "3DPRIMITIVE inline %s\n",
   2340 			  primtype);
   2341 		if (count < len)
   2342 			BUFFER_FAIL(count, len, "3DPRIMITIVE inline");
   2343 		if (!saved_s2_set || !saved_s4_set) {
   2344 			fprintf(out, "unknown vertex format\n");
   2345 			for (i = 1; i < len; i++) {
   2346 				instr_out(ctx, i,
   2347 					  "           vertex data (%f float)\n",
   2348 					  int_as_float(data[i]));
   2349 			}
   2350 		} else {
   2351 			unsigned int vertex = 0;
   2352 			for (i = 1; i < len;) {
   2353 				unsigned int tc;
   2354 
   2355 #define VERTEX_OUT(fmt, ...) do {					\
   2356     if (i < len)							\
   2357 	instr_out(ctx, i, " V%d."fmt"\n", vertex, __VA_ARGS__); \
   2358     else								\
   2359 	fprintf(out, " missing data in V%d\n", vertex);			\
   2360     i++;								\
   2361 } while (0)
   2362 
   2363 				VERTEX_OUT("X = %f", int_as_float(data[i]));
   2364 				VERTEX_OUT("Y = %f", int_as_float(data[i]));
   2365 				switch (saved_s4 >> 6 & 0x7) {
   2366 				case 0x1:
   2367 					VERTEX_OUT("Z = %f",
   2368 						   int_as_float(data[i]));
   2369 					break;
   2370 				case 0x2:
   2371 					VERTEX_OUT("Z = %f",
   2372 						   int_as_float(data[i]));
   2373 					VERTEX_OUT("W = %f",
   2374 						   int_as_float(data[i]));
   2375 					break;
   2376 				case 0x3:
   2377 					break;
   2378 				case 0x4:
   2379 					VERTEX_OUT("W = %f",
   2380 						   int_as_float(data[i]));
   2381 					break;
   2382 				default:
   2383 					fprintf(out, "bad S4 position mask\n");
   2384 				}
   2385 
   2386 				if (saved_s4 & (1 << 10)) {
   2387 					VERTEX_OUT
   2388 					    ("color = (A=0x%02x, R=0x%02x, G=0x%02x, "
   2389 					     "B=0x%02x)", data[i] >> 24,
   2390 					     (data[i] >> 16) & 0xff,
   2391 					     (data[i] >> 8) & 0xff,
   2392 					     data[i] & 0xff);
   2393 				}
   2394 				if (saved_s4 & (1 << 11)) {
   2395 					VERTEX_OUT
   2396 					    ("spec = (A=0x%02x, R=0x%02x, G=0x%02x, "
   2397 					     "B=0x%02x)", data[i] >> 24,
   2398 					     (data[i] >> 16) & 0xff,
   2399 					     (data[i] >> 8) & 0xff,
   2400 					     data[i] & 0xff);
   2401 				}
   2402 				if (saved_s4 & (1 << 12))
   2403 					VERTEX_OUT("width = 0x%08x)", data[i]);
   2404 
   2405 				for (tc = 0; tc <= 7; tc++) {
   2406 					switch ((saved_s2 >> (tc * 4)) & 0xf) {
   2407 					case 0x0:
   2408 						VERTEX_OUT("T%d.X = %f", tc,
   2409 							   int_as_float(data
   2410 									[i]));
   2411 						VERTEX_OUT("T%d.Y = %f", tc,
   2412 							   int_as_float(data
   2413 									[i]));
   2414 						break;
   2415 					case 0x1:
   2416 						VERTEX_OUT("T%d.X = %f", tc,
   2417 							   int_as_float(data
   2418 									[i]));
   2419 						VERTEX_OUT("T%d.Y = %f", tc,
   2420 							   int_as_float(data
   2421 									[i]));
   2422 						VERTEX_OUT("T%d.Z = %f", tc,
   2423 							   int_as_float(data
   2424 									[i]));
   2425 						break;
   2426 					case 0x2:
   2427 						VERTEX_OUT("T%d.X = %f", tc,
   2428 							   int_as_float(data
   2429 									[i]));
   2430 						VERTEX_OUT("T%d.Y = %f", tc,
   2431 							   int_as_float(data
   2432 									[i]));
   2433 						VERTEX_OUT("T%d.Z = %f", tc,
   2434 							   int_as_float(data
   2435 									[i]));
   2436 						VERTEX_OUT("T%d.W = %f", tc,
   2437 							   int_as_float(data
   2438 									[i]));
   2439 						break;
   2440 					case 0x3:
   2441 						VERTEX_OUT("T%d.X = %f", tc,
   2442 							   int_as_float(data
   2443 									[i]));
   2444 						break;
   2445 					case 0x4:
   2446 						VERTEX_OUT
   2447 						    ("T%d.XY = 0x%08x half-float",
   2448 						     tc, data[i]);
   2449 						break;
   2450 					case 0x5:
   2451 						VERTEX_OUT
   2452 						    ("T%d.XY = 0x%08x half-float",
   2453 						     tc, data[i]);
   2454 						VERTEX_OUT
   2455 						    ("T%d.ZW = 0x%08x half-float",
   2456 						     tc, data[i]);
   2457 						break;
   2458 					case 0xf:
   2459 						break;
   2460 					default:
   2461 						fprintf(out,
   2462 							"bad S2.T%d format\n",
   2463 							tc);
   2464 					}
   2465 				}
   2466 				vertex++;
   2467 			}
   2468 		}
   2469 
   2470 		ret = len;
   2471 	} else {
   2472 		/* indirect vertices */
   2473 		len = data[0] & 0x0000ffff;	/* index count */
   2474 		if (data[0] & (1 << 17)) {
   2475 			/* random vertex access */
   2476 			if (count < (len + 1) / 2 + 1) {
   2477 				BUFFER_FAIL(count, (len + 1) / 2 + 1,
   2478 					    "3DPRIMITIVE random indirect");
   2479 			}
   2480 			instr_out(ctx, 0,
   2481 				  "3DPRIMITIVE random indirect %s (%d)\n",
   2482 				  primtype, len);
   2483 			if (len == 0) {
   2484 				/* vertex indices continue until 0xffff is
   2485 				 * found
   2486 				 */
   2487 				for (i = 1; i < count; i++) {
   2488 					if ((data[i] & 0xffff) == 0xffff) {
   2489 						instr_out(ctx, i,
   2490 							  "    indices: (terminator)\n");
   2491 						ret = i;
   2492 						goto out;
   2493 					} else if ((data[i] >> 16) == 0xffff) {
   2494 						instr_out(ctx, i,
   2495 							  "    indices: 0x%04x, (terminator)\n",
   2496 							  data[i] & 0xffff);
   2497 						ret = i;
   2498 						goto out;
   2499 					} else {
   2500 						instr_out(ctx, i,
   2501 							  "    indices: 0x%04x, 0x%04x\n",
   2502 							  data[i] & 0xffff,
   2503 							  data[i] >> 16);
   2504 					}
   2505 				}
   2506 				fprintf(out,
   2507 					"3DPRIMITIVE: no terminator found in index buffer\n");
   2508 				ret = count;
   2509 				goto out;
   2510 			} else {
   2511 				/* fixed size vertex index buffer */
   2512 				for (j = 1, i = 0; i < len; i += 2, j++) {
   2513 					if (i * 2 == len - 1) {
   2514 						instr_out(ctx, j,
   2515 							  "    indices: 0x%04x\n",
   2516 							  data[j] & 0xffff);
   2517 					} else {
   2518 						instr_out(ctx, j,
   2519 							  "    indices: 0x%04x, 0x%04x\n",
   2520 							  data[j] & 0xffff,
   2521 							  data[j] >> 16);
   2522 					}
   2523 				}
   2524 			}
   2525 			ret = (len + 1) / 2 + 1;
   2526 			goto out;
   2527 		} else {
   2528 			/* sequential vertex access */
   2529 			instr_out(ctx, 0,
   2530 				  "3DPRIMITIVE sequential indirect %s, %d starting from "
   2531 				  "%d\n", primtype, len, data[1] & 0xffff);
   2532 			instr_out(ctx, 1, "           start\n");
   2533 			ret = 2;
   2534 			goto out;
   2535 		}
   2536 	}
   2537 
   2538 out:
   2539 	saved_s2 = original_s2;
   2540 	saved_s4 = original_s4;
   2541 	return ret;
   2542 }
   2543 
   2544 static int
   2545 decode_3d(struct drm_intel_decode *ctx)
   2546 {
   2547 	uint32_t opcode;
   2548 	unsigned int idx;
   2549 	uint32_t *data = ctx->data;
   2550 
   2551 	struct {
   2552 		uint32_t opcode;
   2553 		unsigned int min_len;
   2554 		unsigned int max_len;
   2555 		const char *name;
   2556 	} opcodes_3d[] = {
   2557 		{ 0x06, 1, 1, "3DSTATE_ANTI_ALIASING" },
   2558 		{ 0x08, 1, 1, "3DSTATE_BACKFACE_STENCIL_OPS" },
   2559 		{ 0x09, 1, 1, "3DSTATE_BACKFACE_STENCIL_MASKS" },
   2560 		{ 0x16, 1, 1, "3DSTATE_COORD_SET_BINDINGS" },
   2561 		{ 0x15, 1, 1, "3DSTATE_FOG_COLOR" },
   2562 		{ 0x0b, 1, 1, "3DSTATE_INDEPENDENT_ALPHA_BLEND" },
   2563 		{ 0x0d, 1, 1, "3DSTATE_MODES_4" },
   2564 		{ 0x0c, 1, 1, "3DSTATE_MODES_5" },
   2565 		{ 0x07, 1, 1, "3DSTATE_RASTERIZATION_RULES"},
   2566 	}, *opcode_3d;
   2567 
   2568 	opcode = (data[0] & 0x1f000000) >> 24;
   2569 
   2570 	switch (opcode) {
   2571 	case 0x1f:
   2572 		return decode_3d_primitive(ctx);
   2573 	case 0x1d:
   2574 		return decode_3d_1d(ctx);
   2575 	case 0x1c:
   2576 		return decode_3d_1c(ctx);
   2577 	}
   2578 
   2579 	for (idx = 0; idx < ARRAY_SIZE(opcodes_3d); idx++) {
   2580 		opcode_3d = &opcodes_3d[idx];
   2581 		if (opcode == opcode_3d->opcode) {
   2582 			unsigned int len = 1, i;
   2583 
   2584 			instr_out(ctx, 0, "%s\n", opcode_3d->name);
   2585 			if (opcode_3d->max_len > 1) {
   2586 				len = (data[0] & 0xff) + 2;
   2587 				if (len < opcode_3d->min_len ||
   2588 				    len > opcode_3d->max_len) {
   2589 					fprintf(out, "Bad count in %s\n",
   2590 						opcode_3d->name);
   2591 				}
   2592 			}
   2593 
   2594 			for (i = 1; i < len; i++) {
   2595 				instr_out(ctx, i, "dword %d\n", i);
   2596 			}
   2597 			return len;
   2598 		}
   2599 	}
   2600 
   2601 	instr_out(ctx, 0, "3D UNKNOWN: 3d opcode = 0x%x\n", opcode);
   2602 	return 1;
   2603 }
   2604 
   2605 static const char *get_965_surfacetype(unsigned int surfacetype)
   2606 {
   2607 	switch (surfacetype) {
   2608 	case 0:
   2609 		return "1D";
   2610 	case 1:
   2611 		return "2D";
   2612 	case 2:
   2613 		return "3D";
   2614 	case 3:
   2615 		return "CUBE";
   2616 	case 4:
   2617 		return "BUFFER";
   2618 	case 7:
   2619 		return "NULL";
   2620 	default:
   2621 		return "unknown";
   2622 	}
   2623 }
   2624 
   2625 static const char *get_965_depthformat(unsigned int depthformat)
   2626 {
   2627 	switch (depthformat) {
   2628 	case 0:
   2629 		return "s8_z24float";
   2630 	case 1:
   2631 		return "z32float";
   2632 	case 2:
   2633 		return "z24s8";
   2634 	case 5:
   2635 		return "z16";
   2636 	default:
   2637 		return "unknown";
   2638 	}
   2639 }
   2640 
   2641 static const char *get_965_element_component(uint32_t data, int component)
   2642 {
   2643 	uint32_t component_control = (data >> (16 + (3 - component) * 4)) & 0x7;
   2644 
   2645 	switch (component_control) {
   2646 	case 0:
   2647 		return "nostore";
   2648 	case 1:
   2649 		switch (component) {
   2650 		case 0:
   2651 			return "X";
   2652 		case 1:
   2653 			return "Y";
   2654 		case 2:
   2655 			return "Z";
   2656 		case 3:
   2657 			return "W";
   2658 		default:
   2659 			return "fail";
   2660 		}
   2661 	case 2:
   2662 		return "0.0";
   2663 	case 3:
   2664 		return "1.0";
   2665 	case 4:
   2666 		return "0x1";
   2667 	case 5:
   2668 		return "VID";
   2669 	default:
   2670 		return "fail";
   2671 	}
   2672 }
   2673 
   2674 static const char *get_965_prim_type(uint32_t primtype)
   2675 {
   2676 	switch (primtype) {
   2677 	case 0x01:
   2678 		return "point list";
   2679 	case 0x02:
   2680 		return "line list";
   2681 	case 0x03:
   2682 		return "line strip";
   2683 	case 0x04:
   2684 		return "tri list";
   2685 	case 0x05:
   2686 		return "tri strip";
   2687 	case 0x06:
   2688 		return "tri fan";
   2689 	case 0x07:
   2690 		return "quad list";
   2691 	case 0x08:
   2692 		return "quad strip";
   2693 	case 0x09:
   2694 		return "line list adj";
   2695 	case 0x0a:
   2696 		return "line strip adj";
   2697 	case 0x0b:
   2698 		return "tri list adj";
   2699 	case 0x0c:
   2700 		return "tri strip adj";
   2701 	case 0x0d:
   2702 		return "tri strip reverse";
   2703 	case 0x0e:
   2704 		return "polygon";
   2705 	case 0x0f:
   2706 		return "rect list";
   2707 	case 0x10:
   2708 		return "line loop";
   2709 	case 0x11:
   2710 		return "point list bf";
   2711 	case 0x12:
   2712 		return "line strip cont";
   2713 	case 0x13:
   2714 		return "line strip bf";
   2715 	case 0x14:
   2716 		return "line strip cont bf";
   2717 	case 0x15:
   2718 		return "tri fan no stipple";
   2719 	default:
   2720 		return "fail";
   2721 	}
   2722 }
   2723 
   2724 static int
   2725 i965_decode_urb_fence(struct drm_intel_decode *ctx, int len)
   2726 {
   2727 	uint32_t vs_fence, clip_fence, gs_fence, sf_fence, vfe_fence, cs_fence;
   2728 	uint32_t *data = ctx->data;
   2729 
   2730 	if (len != 3)
   2731 		fprintf(out, "Bad count in URB_FENCE\n");
   2732 
   2733 	vs_fence = data[1] & 0x3ff;
   2734 	gs_fence = (data[1] >> 10) & 0x3ff;
   2735 	clip_fence = (data[1] >> 20) & 0x3ff;
   2736 	sf_fence = data[2] & 0x3ff;
   2737 	vfe_fence = (data[2] >> 10) & 0x3ff;
   2738 	cs_fence = (data[2] >> 20) & 0x7ff;
   2739 
   2740 	instr_out(ctx, 0, "URB_FENCE: %s%s%s%s%s%s\n",
   2741 		  (data[0] >> 13) & 1 ? "cs " : "",
   2742 		  (data[0] >> 12) & 1 ? "vfe " : "",
   2743 		  (data[0] >> 11) & 1 ? "sf " : "",
   2744 		  (data[0] >> 10) & 1 ? "clip " : "",
   2745 		  (data[0] >> 9) & 1 ? "gs " : "",
   2746 		  (data[0] >> 8) & 1 ? "vs " : "");
   2747 	instr_out(ctx, 1,
   2748 		  "vs fence: %d, clip_fence: %d, gs_fence: %d\n",
   2749 		  vs_fence, clip_fence, gs_fence);
   2750 	instr_out(ctx, 2,
   2751 		  "sf fence: %d, vfe_fence: %d, cs_fence: %d\n",
   2752 		  sf_fence, vfe_fence, cs_fence);
   2753 	if (gs_fence < vs_fence)
   2754 		fprintf(out, "gs fence < vs fence!\n");
   2755 	if (clip_fence < gs_fence)
   2756 		fprintf(out, "clip fence < gs fence!\n");
   2757 	if (sf_fence < clip_fence)
   2758 		fprintf(out, "sf fence < clip fence!\n");
   2759 	if (cs_fence < sf_fence)
   2760 		fprintf(out, "cs fence < sf fence!\n");
   2761 
   2762 	return len;
   2763 }
   2764 
   2765 static void
   2766 state_base_out(struct drm_intel_decode *ctx, unsigned int index,
   2767 	       const char *name)
   2768 {
   2769 	if (ctx->data[index] & 1) {
   2770 		instr_out(ctx, index,
   2771 			  "%s state base address 0x%08x\n", name,
   2772 			  ctx->data[index] & ~1);
   2773 	} else {
   2774 		instr_out(ctx, index, "%s state base not updated\n",
   2775 			  name);
   2776 	}
   2777 }
   2778 
   2779 static void
   2780 state_max_out(struct drm_intel_decode *ctx, unsigned int index,
   2781 	      const char *name)
   2782 {
   2783 	if (ctx->data[index] & 1) {
   2784 		if (ctx->data[index] == 1) {
   2785 			instr_out(ctx, index,
   2786 				  "%s state upper bound disabled\n", name);
   2787 		} else {
   2788 			instr_out(ctx, index,
   2789 				  "%s state upper bound 0x%08x\n", name,
   2790 				  ctx->data[index] & ~1);
   2791 		}
   2792 	} else {
   2793 		instr_out(ctx, index,
   2794 			  "%s state upper bound not updated\n", name);
   2795 	}
   2796 }
   2797 
   2798 static int
   2799 gen7_3DSTATE_VIEWPORT_STATE_POINTERS_CC(struct drm_intel_decode *ctx)
   2800 {
   2801 	instr_out(ctx, 0, "3DSTATE_VIEWPORT_STATE_POINTERS_CC\n");
   2802 	instr_out(ctx, 1, "pointer to CC viewport\n");
   2803 
   2804 	return 2;
   2805 }
   2806 
   2807 static int
   2808 gen7_3DSTATE_VIEWPORT_STATE_POINTERS_SF_CLIP(struct drm_intel_decode *ctx)
   2809 {
   2810 	instr_out(ctx, 0, "3DSTATE_VIEWPORT_STATE_POINTERS_SF_CLIP\n");
   2811 	instr_out(ctx, 1, "pointer to SF_CLIP viewport\n");
   2812 
   2813 	return 2;
   2814 }
   2815 
   2816 static int
   2817 gen7_3DSTATE_BLEND_STATE_POINTERS(struct drm_intel_decode *ctx)
   2818 {
   2819 	instr_out(ctx, 0, "3DSTATE_BLEND_STATE_POINTERS\n");
   2820 	instr_out(ctx, 1, "pointer to BLEND_STATE at 0x%08x (%s)\n",
   2821 		  ctx->data[1] & ~1,
   2822 		  (ctx->data[1] & 1) ? "changed" : "unchanged");
   2823 
   2824 	return 2;
   2825 }
   2826 
   2827 static int
   2828 gen7_3DSTATE_DEPTH_STENCIL_STATE_POINTERS(struct drm_intel_decode *ctx)
   2829 {
   2830 	instr_out(ctx, 0, "3DSTATE_DEPTH_STENCIL_STATE_POINTERS\n");
   2831 	instr_out(ctx, 1,
   2832 		  "pointer to DEPTH_STENCIL_STATE at 0x%08x (%s)\n",
   2833 		  ctx->data[1] & ~1,
   2834 		  (ctx->data[1] & 1) ? "changed" : "unchanged");
   2835 
   2836 	return 2;
   2837 }
   2838 
   2839 static int
   2840 gen7_3DSTATE_HIER_DEPTH_BUFFER(struct drm_intel_decode *ctx)
   2841 {
   2842 	instr_out(ctx, 0, "3DSTATE_HIER_DEPTH_BUFFER\n");
   2843 	instr_out(ctx, 1, "pitch %db\n",
   2844 		  (ctx->data[1] & 0x1ffff) + 1);
   2845 	instr_out(ctx, 2, "pointer to HiZ buffer\n");
   2846 
   2847 	return 3;
   2848 }
   2849 
   2850 static int
   2851 gen6_3DSTATE_CC_STATE_POINTERS(struct drm_intel_decode *ctx)
   2852 {
   2853 	instr_out(ctx, 0, "3DSTATE_CC_STATE_POINTERS\n");
   2854 	instr_out(ctx, 1, "blend change %d\n", ctx->data[1] & 1);
   2855 	instr_out(ctx, 2, "depth stencil change %d\n",
   2856 		  ctx->data[2] & 1);
   2857 	instr_out(ctx, 3, "cc change %d\n", ctx->data[3] & 1);
   2858 
   2859 	return 4;
   2860 }
   2861 
   2862 static int
   2863 gen7_3DSTATE_CC_STATE_POINTERS(struct drm_intel_decode *ctx)
   2864 {
   2865 	instr_out(ctx, 0, "3DSTATE_CC_STATE_POINTERS\n");
   2866 	instr_out(ctx, 1, "pointer to COLOR_CALC_STATE at 0x%08x "
   2867 		  "(%s)\n",
   2868 		  ctx->data[1] & ~1,
   2869 		  (ctx->data[1] & 1) ? "changed" : "unchanged");
   2870 
   2871 	return 2;
   2872 }
   2873 
   2874 static int
   2875 gen7_3DSTATE_URB_unit(struct drm_intel_decode *ctx, const char *unit)
   2876 {
   2877     int start_kb = ((ctx->data[1] >> 25) & 0x3f) * 8;
   2878     /* the field is # of 512-bit rows - 1, we print bytes */
   2879     int entry_size = (((ctx->data[1] >> 16) & 0x1ff) + 1);
   2880     int nr_entries = ctx->data[1] & 0xffff;
   2881 
   2882     instr_out(ctx, 0, "3DSTATE_URB_%s\n", unit);
   2883     instr_out(ctx, 1,
   2884 	      "%dKB start, size=%d 64B rows, nr_entries=%d, total size %dB\n",
   2885 	      start_kb, entry_size, nr_entries, nr_entries * 64 * entry_size);
   2886 
   2887     return 2;
   2888 }
   2889 
   2890 static int
   2891 gen7_3DSTATE_URB_VS(struct drm_intel_decode *ctx)
   2892 {
   2893 	return gen7_3DSTATE_URB_unit(ctx, "VS");
   2894 }
   2895 
   2896 static int
   2897 gen7_3DSTATE_URB_HS(struct drm_intel_decode *ctx)
   2898 {
   2899 	return gen7_3DSTATE_URB_unit(ctx, "HS");
   2900 }
   2901 
   2902 static int
   2903 gen7_3DSTATE_URB_DS(struct drm_intel_decode *ctx)
   2904 {
   2905 	return gen7_3DSTATE_URB_unit(ctx, "DS");
   2906 }
   2907 
   2908 static int
   2909 gen7_3DSTATE_URB_GS(struct drm_intel_decode *ctx)
   2910 {
   2911 	return gen7_3DSTATE_URB_unit(ctx, "GS");
   2912 }
   2913 
   2914 static int
   2915 gen7_3DSTATE_CONSTANT(struct drm_intel_decode *ctx, const char *unit)
   2916 {
   2917 	int rlen[4];
   2918 
   2919 	rlen[0] = (ctx->data[1] >> 0) & 0xffff;
   2920 	rlen[1] = (ctx->data[1] >> 16) & 0xffff;
   2921 	rlen[2] = (ctx->data[2] >> 0) & 0xffff;
   2922 	rlen[3] = (ctx->data[2] >> 16) & 0xffff;
   2923 
   2924 	instr_out(ctx, 0, "3DSTATE_CONSTANT_%s\n", unit);
   2925 	instr_out(ctx, 1, "len 0 = %d, len 1 = %d\n", rlen[0], rlen[1]);
   2926 	instr_out(ctx, 2, "len 2 = %d, len 3 = %d\n", rlen[2], rlen[3]);
   2927 	instr_out(ctx, 3, "pointer to constbuf 0\n");
   2928 	instr_out(ctx, 4, "pointer to constbuf 1\n");
   2929 	instr_out(ctx, 5, "pointer to constbuf 2\n");
   2930 	instr_out(ctx, 6, "pointer to constbuf 3\n");
   2931 
   2932 	return 7;
   2933 }
   2934 
   2935 static int
   2936 gen7_3DSTATE_CONSTANT_VS(struct drm_intel_decode *ctx)
   2937 {
   2938 	return gen7_3DSTATE_CONSTANT(ctx, "VS");
   2939 }
   2940 
   2941 static int
   2942 gen7_3DSTATE_CONSTANT_GS(struct drm_intel_decode *ctx)
   2943 {
   2944 	return gen7_3DSTATE_CONSTANT(ctx, "GS");
   2945 }
   2946 
   2947 static int
   2948 gen7_3DSTATE_CONSTANT_PS(struct drm_intel_decode *ctx)
   2949 {
   2950 	return gen7_3DSTATE_CONSTANT(ctx, "PS");
   2951 }
   2952 
   2953 static int
   2954 gen7_3DSTATE_CONSTANT_DS(struct drm_intel_decode *ctx)
   2955 {
   2956 	return gen7_3DSTATE_CONSTANT(ctx, "DS");
   2957 }
   2958 
   2959 static int
   2960 gen7_3DSTATE_CONSTANT_HS(struct drm_intel_decode *ctx)
   2961 {
   2962 	return gen7_3DSTATE_CONSTANT(ctx, "HS");
   2963 }
   2964 
   2965 
   2966 static int
   2967 gen6_3DSTATE_WM(struct drm_intel_decode *ctx)
   2968 {
   2969 	instr_out(ctx, 0, "3DSTATE_WM\n");
   2970 	instr_out(ctx, 1, "kernel start pointer 0\n");
   2971 	instr_out(ctx, 2,
   2972 		  "SPF=%d, VME=%d, Sampler Count %d, "
   2973 		  "Binding table count %d\n",
   2974 		  (ctx->data[2] >> 31) & 1,
   2975 		  (ctx->data[2] >> 30) & 1,
   2976 		  (ctx->data[2] >> 27) & 7,
   2977 		  (ctx->data[2] >> 18) & 0xff);
   2978 	instr_out(ctx, 3, "scratch offset\n");
   2979 	instr_out(ctx, 4,
   2980 		  "Depth Clear %d, Depth Resolve %d, HiZ Resolve %d, "
   2981 		  "Dispatch GRF start[0] %d, start[1] %d, start[2] %d\n",
   2982 		  (ctx->data[4] & (1 << 30)) != 0,
   2983 		  (ctx->data[4] & (1 << 28)) != 0,
   2984 		  (ctx->data[4] & (1 << 27)) != 0,
   2985 		  (ctx->data[4] >> 16) & 0x7f,
   2986 		  (ctx->data[4] >> 8) & 0x7f,
   2987 		  (ctx->data[4] & 0x7f));
   2988 	instr_out(ctx, 5,
   2989 		  "MaxThreads %d, PS KillPixel %d, PS computed Z %d, "
   2990 		  "PS use sourceZ %d, Thread Dispatch %d, PS use sourceW %d, "
   2991 		  "Dispatch32 %d, Dispatch16 %d, Dispatch8 %d\n",
   2992 		  ((ctx->data[5] >> 25) & 0x7f) + 1,
   2993 		  (ctx->data[5] & (1 << 22)) != 0,
   2994 		  (ctx->data[5] & (1 << 21)) != 0,
   2995 		  (ctx->data[5] & (1 << 20)) != 0,
   2996 		  (ctx->data[5] & (1 << 19)) != 0,
   2997 		  (ctx->data[5] & (1 << 8)) != 0,
   2998 		  (ctx->data[5] & (1 << 2)) != 0,
   2999 		  (ctx->data[5] & (1 << 1)) != 0,
   3000 		  (ctx->data[5] & (1 << 0)) != 0);
   3001 	instr_out(ctx, 6,
   3002 		  "Num SF output %d, Pos XY offset %d, ZW interp mode %d , "
   3003 		  "Barycentric interp mode 0x%x, Point raster rule %d, "
   3004 		  "Multisample mode %d, "
   3005 		  "Multisample Dispatch mode %d\n",
   3006 		  (ctx->data[6] >> 20) & 0x3f,
   3007 		  (ctx->data[6] >> 18) & 3,
   3008 		  (ctx->data[6] >> 16) & 3,
   3009 		  (ctx->data[6] >> 10) & 0x3f,
   3010 		  (ctx->data[6] & (1 << 9)) != 0,
   3011 		  (ctx->data[6] >> 1) & 3,
   3012 		  (ctx->data[6] & 1));
   3013 	instr_out(ctx, 7, "kernel start pointer 1\n");
   3014 	instr_out(ctx, 8, "kernel start pointer 2\n");
   3015 
   3016 	return 9;
   3017 }
   3018 
   3019 static int
   3020 gen7_3DSTATE_WM(struct drm_intel_decode *ctx)
   3021 {
   3022 	const char *computed_depth = "";
   3023 	const char *early_depth = "";
   3024 	const char *zw_interp = "";
   3025 
   3026 	switch ((ctx->data[1] >> 23) & 0x3) {
   3027 	case 0:
   3028 		computed_depth = "";
   3029 		break;
   3030 	case 1:
   3031 		computed_depth = "computed depth";
   3032 		break;
   3033 	case 2:
   3034 		computed_depth = "computed depth >=";
   3035 		break;
   3036 	case 3:
   3037 		computed_depth = "computed depth <=";
   3038 		break;
   3039 	}
   3040 
   3041 	switch ((ctx->data[1] >> 21) & 0x3) {
   3042 	case 0:
   3043 		early_depth = "";
   3044 		break;
   3045 	case 1:
   3046 		early_depth = ", EDSC_PSEXEC";
   3047 		break;
   3048 	case 2:
   3049 		early_depth = ", EDSC_PREPS";
   3050 		break;
   3051 	case 3:
   3052 		early_depth = ", BAD EDSC";
   3053 		break;
   3054 	}
   3055 
   3056 	switch ((ctx->data[1] >> 17) & 0x3) {
   3057 	case 0:
   3058 		early_depth = "";
   3059 		break;
   3060 	case 1:
   3061 		early_depth = ", BAD ZW interp";
   3062 		break;
   3063 	case 2:
   3064 		early_depth = ", ZW centroid";
   3065 		break;
   3066 	case 3:
   3067 		early_depth = ", ZW sample";
   3068 		break;
   3069 	}
   3070 
   3071 	instr_out(ctx, 0, "3DSTATE_WM\n");
   3072 	instr_out(ctx, 1, "(%s%s%s%s%s%s)%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
   3073 		  (ctx->data[1] & (1 << 11)) ? "PP " : "",
   3074 		  (ctx->data[1] & (1 << 12)) ? "PC " : "",
   3075 		  (ctx->data[1] & (1 << 13)) ? "PS " : "",
   3076 		  (ctx->data[1] & (1 << 14)) ? "NPP " : "",
   3077 		  (ctx->data[1] & (1 << 15)) ? "NPC " : "",
   3078 		  (ctx->data[1] & (1 << 16)) ? "NPS " : "",
   3079 		  (ctx->data[1] & (1 << 30)) ? ", depth clear" : "",
   3080 		  (ctx->data[1] & (1 << 29)) ? "" : ", disabled",
   3081 		  (ctx->data[1] & (1 << 28)) ? ", depth resolve" : "",
   3082 		  (ctx->data[1] & (1 << 27)) ? ", hiz resolve" : "",
   3083 		  (ctx->data[1] & (1 << 25)) ? ", kill" : "",
   3084 		  computed_depth,
   3085 		  early_depth,
   3086 		  zw_interp,
   3087 		  (ctx->data[1] & (1 << 20)) ? ", source depth" : "",
   3088 		  (ctx->data[1] & (1 << 19)) ? ", source W" : "",
   3089 		  (ctx->data[1] & (1 << 10)) ? ", coverage" : "",
   3090 		  (ctx->data[1] & (1 << 4)) ? ", poly stipple" : "",
   3091 		  (ctx->data[1] & (1 << 3)) ? ", line stipple" : "",
   3092 		  (ctx->data[1] & (1 << 2)) ? ", point UL" : ", point UR"
   3093 		  );
   3094 	instr_out(ctx, 2, "MS\n");
   3095 
   3096 	return 3;
   3097 }
   3098 
   3099 static int
   3100 gen4_3DPRIMITIVE(struct drm_intel_decode *ctx)
   3101 {
   3102 	instr_out(ctx, 0,
   3103 		  "3DPRIMITIVE: %s %s\n",
   3104 		  get_965_prim_type((ctx->data[0] >> 10) & 0x1f),
   3105 		  (ctx->data[0] & (1 << 15)) ? "random" : "sequential");
   3106 	instr_out(ctx, 1, "vertex count\n");
   3107 	instr_out(ctx, 2, "start vertex\n");
   3108 	instr_out(ctx, 3, "instance count\n");
   3109 	instr_out(ctx, 4, "start instance\n");
   3110 	instr_out(ctx, 5, "index bias\n");
   3111 
   3112 	return 6;
   3113 }
   3114 
   3115 static int
   3116 gen7_3DPRIMITIVE(struct drm_intel_decode *ctx)
   3117 {
   3118 	bool indirect = !!(ctx->data[0] & (1 << 10));
   3119 
   3120 	instr_out(ctx, 0,
   3121 		  "3DPRIMITIVE: %s%s\n",
   3122 		  indirect ? " indirect" : "",
   3123 		  (ctx->data[0] & (1 << 8)) ? " predicated" : "");
   3124 	instr_out(ctx, 1, "%s %s\n",
   3125 		  get_965_prim_type(ctx->data[1] & 0x3f),
   3126 		  (ctx->data[1] & (1 << 8)) ? "random" : "sequential");
   3127 	instr_out(ctx, 2, indirect ? "ignored" : "vertex count\n");
   3128 	instr_out(ctx, 3, indirect ? "ignored" : "start vertex\n");
   3129 	instr_out(ctx, 4, indirect ? "ignored" : "instance count\n");
   3130 	instr_out(ctx, 5, indirect ? "ignored" : "start instance\n");
   3131 	instr_out(ctx, 6, indirect ? "ignored" : "index bias\n");
   3132 
   3133 	return 7;
   3134 }
   3135 
   3136 static int
   3137 decode_3d_965(struct drm_intel_decode *ctx)
   3138 {
   3139 	uint32_t opcode;
   3140 	unsigned int len;
   3141 	unsigned int i, j, sba_len;
   3142 	const char *desc1 = NULL;
   3143 	uint32_t *data = ctx->data;
   3144 	uint32_t devid = ctx->devid;
   3145 
   3146 	struct {
   3147 		uint32_t opcode;
   3148 		uint32_t len_mask;
   3149 		int unsigned min_len;
   3150 		int unsigned max_len;
   3151 		const char *name;
   3152 		int gen;
   3153 		int (*func)(struct drm_intel_decode *ctx);
   3154 	} opcodes_3d[] = {
   3155 		{ 0x6000, 0x00ff, 3, 3, "URB_FENCE" },
   3156 		{ 0x6001, 0xffff, 2, 2, "CS_URB_STATE" },
   3157 		{ 0x6002, 0x00ff, 2, 2, "CONSTANT_BUFFER" },
   3158 		{ 0x6101, 0xffff, 6, 10, "STATE_BASE_ADDRESS" },
   3159 		{ 0x6102, 0xffff, 2, 2, "STATE_SIP" },
   3160 		{ 0x6104, 0xffff, 1, 1, "3DSTATE_PIPELINE_SELECT" },
   3161 		{ 0x680b, 0xffff, 1, 1, "3DSTATE_VF_STATISTICS" },
   3162 		{ 0x6904, 0xffff, 1, 1, "3DSTATE_PIPELINE_SELECT" },
   3163 		{ 0x7800, 0xffff, 7, 7, "3DSTATE_PIPELINED_POINTERS" },
   3164 		{ 0x7801, 0x00ff, 4, 6, "3DSTATE_BINDING_TABLE_POINTERS" },
   3165 		{ 0x7802, 0x00ff, 4, 4, "3DSTATE_SAMPLER_STATE_POINTERS" },
   3166 		{ 0x7805, 0x00ff, 7, 7, "3DSTATE_DEPTH_BUFFER", 7 },
   3167 		{ 0x7805, 0x00ff, 3, 3, "3DSTATE_URB" },
   3168 		{ 0x7804, 0x00ff, 3, 3, "3DSTATE_CLEAR_PARAMS" },
   3169 		{ 0x7806, 0x00ff, 3, 3, "3DSTATE_STENCIL_BUFFER" },
   3170 		{ 0x790f, 0x00ff, 3, 3, "3DSTATE_HIER_DEPTH_BUFFER", 6 },
   3171 		{ 0x7807, 0x00ff, 3, 3, "3DSTATE_HIER_DEPTH_BUFFER", 7, gen7_3DSTATE_HIER_DEPTH_BUFFER },
   3172 		{ 0x7808, 0x00ff, 5, 257, "3DSTATE_VERTEX_BUFFERS" },
   3173 		{ 0x7809, 0x00ff, 3, 256, "3DSTATE_VERTEX_ELEMENTS" },
   3174 		{ 0x780a, 0x00ff, 3, 3, "3DSTATE_INDEX_BUFFER" },
   3175 		{ 0x780b, 0xffff, 1, 1, "3DSTATE_VF_STATISTICS" },
   3176 		{ 0x780d, 0x00ff, 4, 4, "3DSTATE_VIEWPORT_STATE_POINTERS" },
   3177 		{ 0x780e, 0xffff, 4, 4, NULL, 6, gen6_3DSTATE_CC_STATE_POINTERS },
   3178 		{ 0x780e, 0x00ff, 2, 2, NULL, 7, gen7_3DSTATE_CC_STATE_POINTERS },
   3179 		{ 0x780f, 0x00ff, 2, 2, "3DSTATE_SCISSOR_POINTERS" },
   3180 		{ 0x7810, 0x00ff, 6, 6, "3DSTATE_VS" },
   3181 		{ 0x7811, 0x00ff, 7, 7, "3DSTATE_GS" },
   3182 		{ 0x7812, 0x00ff, 4, 4, "3DSTATE_CLIP" },
   3183 		{ 0x7813, 0x00ff, 20, 20, "3DSTATE_SF", 6 },
   3184 		{ 0x7813, 0x00ff, 7, 7, "3DSTATE_SF", 7 },
   3185 		{ 0x7814, 0x00ff, 3, 3, "3DSTATE_WM", 7, gen7_3DSTATE_WM },
   3186 		{ 0x7814, 0x00ff, 9, 9, "3DSTATE_WM", 6, gen6_3DSTATE_WM },
   3187 		{ 0x7815, 0x00ff, 5, 5, "3DSTATE_CONSTANT_VS_STATE", 6 },
   3188 		{ 0x7815, 0x00ff, 7, 7, "3DSTATE_CONSTANT_VS", 7, gen7_3DSTATE_CONSTANT_VS },
   3189 		{ 0x7816, 0x00ff, 5, 5, "3DSTATE_CONSTANT_GS_STATE", 6 },
   3190 		{ 0x7816, 0x00ff, 7, 7, "3DSTATE_CONSTANT_GS", 7, gen7_3DSTATE_CONSTANT_GS },
   3191 		{ 0x7817, 0x00ff, 5, 5, "3DSTATE_CONSTANT_PS_STATE", 6 },
   3192 		{ 0x7817, 0x00ff, 7, 7, "3DSTATE_CONSTANT_PS", 7, gen7_3DSTATE_CONSTANT_PS },
   3193 		{ 0x7818, 0xffff, 2, 2, "3DSTATE_SAMPLE_MASK" },
   3194 		{ 0x7819, 0x00ff, 7, 7, "3DSTATE_CONSTANT_HS", 7, gen7_3DSTATE_CONSTANT_HS },
   3195 		{ 0x781a, 0x00ff, 7, 7, "3DSTATE_CONSTANT_DS", 7, gen7_3DSTATE_CONSTANT_DS },
   3196 		{ 0x781b, 0x00ff, 7, 7, "3DSTATE_HS" },
   3197 		{ 0x781c, 0x00ff, 4, 4, "3DSTATE_TE" },
   3198 		{ 0x781d, 0x00ff, 6, 6, "3DSTATE_DS" },
   3199 		{ 0x781e, 0x00ff, 3, 3, "3DSTATE_STREAMOUT" },
   3200 		{ 0x781f, 0x00ff, 14, 14, "3DSTATE_SBE" },
   3201 		{ 0x7820, 0x00ff, 8, 8, "3DSTATE_PS" },
   3202 		{ 0x7821, 0x00ff, 2, 2, NULL, 7, gen7_3DSTATE_VIEWPORT_STATE_POINTERS_SF_CLIP },
   3203 		{ 0x7823, 0x00ff, 2, 2, NULL, 7, gen7_3DSTATE_VIEWPORT_STATE_POINTERS_CC },
   3204 		{ 0x7824, 0x00ff, 2, 2, NULL, 7, gen7_3DSTATE_BLEND_STATE_POINTERS },
   3205 		{ 0x7825, 0x00ff, 2, 2, NULL, 7, gen7_3DSTATE_DEPTH_STENCIL_STATE_POINTERS },
   3206 		{ 0x7826, 0x00ff, 2, 2, "3DSTATE_BINDING_TABLE_POINTERS_VS" },
   3207 		{ 0x7827, 0x00ff, 2, 2, "3DSTATE_BINDING_TABLE_POINTERS_HS" },
   3208 		{ 0x7828, 0x00ff, 2, 2, "3DSTATE_BINDING_TABLE_POINTERS_DS" },
   3209 		{ 0x7829, 0x00ff, 2, 2, "3DSTATE_BINDING_TABLE_POINTERS_GS" },
   3210 		{ 0x782a, 0x00ff, 2, 2, "3DSTATE_BINDING_TABLE_POINTERS_PS" },
   3211 		{ 0x782b, 0x00ff, 2, 2, "3DSTATE_SAMPLER_STATE_POINTERS_VS" },
   3212 		{ 0x782c, 0x00ff, 2, 2, "3DSTATE_SAMPLER_STATE_POINTERS_HS" },
   3213 		{ 0x782d, 0x00ff, 2, 2, "3DSTATE_SAMPLER_STATE_POINTERS_DS" },
   3214 		{ 0x782e, 0x00ff, 2, 2, "3DSTATE_SAMPLER_STATE_POINTERS_GS" },
   3215 		{ 0x782f, 0x00ff, 2, 2, "3DSTATE_SAMPLER_STATE_POINTERS_PS" },
   3216 		{ 0x7830, 0x00ff, 2, 2, NULL, 7, gen7_3DSTATE_URB_VS },
   3217 		{ 0x7831, 0x00ff, 2, 2, NULL, 7, gen7_3DSTATE_URB_HS },
   3218 		{ 0x7832, 0x00ff, 2, 2, NULL, 7, gen7_3DSTATE_URB_DS },
   3219 		{ 0x7833, 0x00ff, 2, 2, NULL, 7, gen7_3DSTATE_URB_GS },
   3220 		{ 0x7900, 0xffff, 4, 4, "3DSTATE_DRAWING_RECTANGLE" },
   3221 		{ 0x7901, 0xffff, 5, 5, "3DSTATE_CONSTANT_COLOR" },
   3222 		{ 0x7905, 0xffff, 5, 7, "3DSTATE_DEPTH_BUFFER" },
   3223 		{ 0x7906, 0xffff, 2, 2, "3DSTATE_POLY_STIPPLE_OFFSET" },
   3224 		{ 0x7907, 0xffff, 33, 33, "3DSTATE_POLY_STIPPLE_PATTERN" },
   3225 		{ 0x7908, 0xffff, 3, 3, "3DSTATE_LINE_STIPPLE" },
   3226 		{ 0x7909, 0xffff, 2, 2, "3DSTATE_GLOBAL_DEPTH_OFFSET_CLAMP" },
   3227 		{ 0x7909, 0xffff, 2, 2, "3DSTATE_CLEAR_PARAMS" },
   3228 		{ 0x790a, 0xffff, 3, 3, "3DSTATE_AA_LINE_PARAMETERS" },
   3229 		{ 0x790b, 0xffff, 4, 4, "3DSTATE_GS_SVB_INDEX" },
   3230 		{ 0x790d, 0xffff, 3, 3, "3DSTATE_MULTISAMPLE", 6 },
   3231 		{ 0x790d, 0xffff, 4, 4, "3DSTATE_MULTISAMPLE", 7 },
   3232 		{ 0x7910, 0x00ff, 2, 2, "3DSTATE_CLEAR_PARAMS" },
   3233 		{ 0x7912, 0x00ff, 2, 2, "3DSTATE_PUSH_CONSTANT_ALLOC_VS" },
   3234 		{ 0x7913, 0x00ff, 2, 2, "3DSTATE_PUSH_CONSTANT_ALLOC_HS" },
   3235 		{ 0x7914, 0x00ff, 2, 2, "3DSTATE_PUSH_CONSTANT_ALLOC_DS" },
   3236 		{ 0x7915, 0x00ff, 2, 2, "3DSTATE_PUSH_CONSTANT_ALLOC_GS" },
   3237 		{ 0x7916, 0x00ff, 2, 2, "3DSTATE_PUSH_CONSTANT_ALLOC_PS" },
   3238 		{ 0x7917, 0x00ff, 2, 2+128*2, "3DSTATE_SO_DECL_LIST" },
   3239 		{ 0x7918, 0x00ff, 4, 4, "3DSTATE_SO_BUFFER" },
   3240 		{ 0x7a00, 0x00ff, 4, 6, "PIPE_CONTROL" },
   3241 		{ 0x7b00, 0x00ff, 7, 7, NULL, 7, gen7_3DPRIMITIVE },
   3242 		{ 0x7b00, 0x00ff, 6, 6, NULL, 0, gen4_3DPRIMITIVE },
   3243 	}, *opcode_3d = NULL;
   3244 
   3245 	opcode = (data[0] & 0xffff0000) >> 16;
   3246 
   3247 	for (i = 0; i < ARRAY_SIZE(opcodes_3d); i++) {
   3248 		if (opcode != opcodes_3d[i].opcode)
   3249 			continue;
   3250 
   3251 		/* If it's marked as not our gen, skip. */
   3252 		if (opcodes_3d[i].gen && opcodes_3d[i].gen != ctx->gen)
   3253 			continue;
   3254 
   3255 		opcode_3d = &opcodes_3d[i];
   3256 		break;
   3257 	}
   3258 
   3259 	if (opcode_3d) {
   3260 		if (opcode_3d->max_len == 1)
   3261 			len = 1;
   3262 		else
   3263 			len = (data[0] & opcode_3d->len_mask) + 2;
   3264 
   3265 		if (len < opcode_3d->min_len ||
   3266 		    len > opcode_3d->max_len) {
   3267 			fprintf(out, "Bad length %d in %s, expected %d-%d\n",
   3268 				len, opcode_3d->name,
   3269 				opcode_3d->min_len, opcode_3d->max_len);
   3270 		}
   3271 	} else {
   3272 		len = (data[0] & 0x0000ffff) + 2;
   3273 	}
   3274 
   3275 	switch (opcode) {
   3276 	case 0x6000:
   3277 		return i965_decode_urb_fence(ctx, len);
   3278 	case 0x6001:
   3279 		instr_out(ctx, 0, "CS_URB_STATE\n");
   3280 		instr_out(ctx, 1,
   3281 			  "entry_size: %d [%d bytes], n_entries: %d\n",
   3282 			  (data[1] >> 4) & 0x1f,
   3283 			  (((data[1] >> 4) & 0x1f) + 1) * 64, data[1] & 0x7);
   3284 		return len;
   3285 	case 0x6002:
   3286 		instr_out(ctx, 0, "CONSTANT_BUFFER: %s\n",
   3287 			  (data[0] >> 8) & 1 ? "valid" : "invalid");
   3288 		instr_out(ctx, 1,
   3289 			  "offset: 0x%08x, length: %d bytes\n", data[1] & ~0x3f,
   3290 			  ((data[1] & 0x3f) + 1) * 64);
   3291 		return len;
   3292 	case 0x6101:
   3293 		i = 0;
   3294 		instr_out(ctx, 0, "STATE_BASE_ADDRESS\n");
   3295 		i++;
   3296 
   3297 		if (IS_GEN6(devid) || IS_GEN7(devid))
   3298 			sba_len = 10;
   3299 		else if (IS_GEN5(devid))
   3300 			sba_len = 8;
   3301 		else
   3302 			sba_len = 6;
   3303 		if (len != sba_len)
   3304 			fprintf(out, "Bad count in STATE_BASE_ADDRESS\n");
   3305 
   3306 		state_base_out(ctx, i++, "general");
   3307 		state_base_out(ctx, i++, "surface");
   3308 		if (IS_GEN6(devid) || IS_GEN7(devid))
   3309 			state_base_out(ctx, i++, "dynamic");
   3310 		state_base_out(ctx, i++, "indirect");
   3311 		if (IS_GEN5(devid) || IS_GEN6(devid) || IS_GEN7(devid))
   3312 			state_base_out(ctx, i++, "instruction");
   3313 
   3314 		state_max_out(ctx, i++, "general");
   3315 		if (IS_GEN6(devid) || IS_GEN7(devid))
   3316 			state_max_out(ctx, i++, "dynamic");
   3317 		state_max_out(ctx, i++, "indirect");
   3318 		if (IS_GEN5(devid) || IS_GEN6(devid) || IS_GEN7(devid))
   3319 			state_max_out(ctx, i++, "instruction");
   3320 
   3321 		return len;
   3322 	case 0x7800:
   3323 		instr_out(ctx, 0, "3DSTATE_PIPELINED_POINTERS\n");
   3324 		instr_out(ctx, 1, "VS state\n");
   3325 		instr_out(ctx, 2, "GS state\n");
   3326 		instr_out(ctx, 3, "Clip state\n");
   3327 		instr_out(ctx, 4, "SF state\n");
   3328 		instr_out(ctx, 5, "WM state\n");
   3329 		instr_out(ctx, 6, "CC state\n");
   3330 		return len;
   3331 	case 0x7801:
   3332 		if (len != 6 && len != 4)
   3333 			fprintf(out,
   3334 				"Bad count in 3DSTATE_BINDING_TABLE_POINTERS\n");
   3335 		if (len == 6) {
   3336 			instr_out(ctx, 0,
   3337 				  "3DSTATE_BINDING_TABLE_POINTERS\n");
   3338 			instr_out(ctx, 1, "VS binding table\n");
   3339 			instr_out(ctx, 2, "GS binding table\n");
   3340 			instr_out(ctx, 3, "Clip binding table\n");
   3341 			instr_out(ctx, 4, "SF binding table\n");
   3342 			instr_out(ctx, 5, "WM binding table\n");
   3343 		} else {
   3344 			instr_out(ctx, 0,
   3345 				  "3DSTATE_BINDING_TABLE_POINTERS: VS mod %d, "
   3346 				  "GS mod %d, PS mod %d\n",
   3347 				  (data[0] & (1 << 8)) != 0,
   3348 				  (data[0] & (1 << 9)) != 0,
   3349 				  (data[0] & (1 << 12)) != 0);
   3350 			instr_out(ctx, 1, "VS binding table\n");
   3351 			instr_out(ctx, 2, "GS binding table\n");
   3352 			instr_out(ctx, 3, "WM binding table\n");
   3353 		}
   3354 
   3355 		return len;
   3356 	case 0x7802:
   3357 		instr_out(ctx, 0,
   3358 			  "3DSTATE_SAMPLER_STATE_POINTERS: VS mod %d, "
   3359 			  "GS mod %d, PS mod %d\n", (data[0] & (1 << 8)) != 0,
   3360 			  (data[0] & (1 << 9)) != 0,
   3361 			  (data[0] & (1 << 12)) != 0);
   3362 		instr_out(ctx, 1, "VS sampler state\n");
   3363 		instr_out(ctx, 2, "GS sampler state\n");
   3364 		instr_out(ctx, 3, "WM sampler state\n");
   3365 		return len;
   3366 	case 0x7805:
   3367 		/* Actually 3DSTATE_DEPTH_BUFFER on gen7. */
   3368 		if (ctx->gen == 7)
   3369 			break;
   3370 
   3371 		instr_out(ctx, 0, "3DSTATE_URB\n");
   3372 		instr_out(ctx, 1,
   3373 			  "VS entries %d, alloc size %d (1024bit row)\n",
   3374 			  data[1] & 0xffff, ((data[1] >> 16) & 0x07f) + 1);
   3375 		instr_out(ctx, 2,
   3376 			  "GS entries %d, alloc size %d (1024bit row)\n",
   3377 			  (data[2] >> 8) & 0x3ff, (data[2] & 7) + 1);
   3378 		return len;
   3379 
   3380 	case 0x7808:
   3381 		if ((len - 1) % 4 != 0)
   3382 			fprintf(out, "Bad count in 3DSTATE_VERTEX_BUFFERS\n");
   3383 		instr_out(ctx, 0, "3DSTATE_VERTEX_BUFFERS\n");
   3384 
   3385 		for (i = 1; i < len;) {
   3386 			int idx, access;
   3387 			if (IS_GEN6(devid)) {
   3388 				idx = 26;
   3389 				access = 20;
   3390 			} else {
   3391 				idx = 27;
   3392 				access = 26;
   3393 			}
   3394 			instr_out(ctx, i,
   3395 				  "buffer %d: %s, pitch %db\n", data[i] >> idx,
   3396 				  data[i] & (1 << access) ? "random" :
   3397 				  "sequential", data[i] & 0x07ff);
   3398 			i++;
   3399 			instr_out(ctx, i++, "buffer address\n");
   3400 			instr_out(ctx, i++, "max index\n");
   3401 			instr_out(ctx, i++, "mbz\n");
   3402 		}
   3403 		return len;
   3404 
   3405 	case 0x7809:
   3406 		if ((len + 1) % 2 != 0)
   3407 			fprintf(out, "Bad count in 3DSTATE_VERTEX_ELEMENTS\n");
   3408 		instr_out(ctx, 0, "3DSTATE_VERTEX_ELEMENTS\n");
   3409 
   3410 		for (i = 1; i < len;) {
   3411 			instr_out(ctx, i,
   3412 				  "buffer %d: %svalid, type 0x%04x, "
   3413 				  "src offset 0x%04x bytes\n",
   3414 				  data[i] >> ((IS_GEN6(devid) || IS_GEN7(devid)) ? 26 : 27),
   3415 				  data[i] & (1 << ((IS_GEN6(devid) || IS_GEN7(devid)) ? 25 : 26)) ?
   3416 				  "" : "in", (data[i] >> 16) & 0x1ff,
   3417 				  data[i] & 0x07ff);
   3418 			i++;
   3419 			instr_out(ctx, i, "(%s, %s, %s, %s), "
   3420 				  "dst offset 0x%02x bytes\n",
   3421 				  get_965_element_component(data[i], 0),
   3422 				  get_965_element_component(data[i], 1),
   3423 				  get_965_element_component(data[i], 2),
   3424 				  get_965_element_component(data[i], 3),
   3425 				  (data[i] & 0xff) * 4);
   3426 			i++;
   3427 		}
   3428 		return len;
   3429 
   3430 	case 0x780d:
   3431 		instr_out(ctx, 0,
   3432 			  "3DSTATE_VIEWPORT_STATE_POINTERS\n");
   3433 		instr_out(ctx, 1, "clip\n");
   3434 		instr_out(ctx, 2, "sf\n");
   3435 		instr_out(ctx, 3, "cc\n");
   3436 		return len;
   3437 
   3438 	case 0x780a:
   3439 		instr_out(ctx, 0, "3DSTATE_INDEX_BUFFER\n");
   3440 		instr_out(ctx, 1, "beginning buffer address\n");
   3441 		instr_out(ctx, 2, "ending buffer address\n");
   3442 		return len;
   3443 
   3444 	case 0x780f:
   3445 		instr_out(ctx, 0, "3DSTATE_SCISSOR_POINTERS\n");
   3446 		instr_out(ctx, 1, "scissor rect offset\n");
   3447 		return len;
   3448 
   3449 	case 0x7810:
   3450 		instr_out(ctx, 0, "3DSTATE_VS\n");
   3451 		instr_out(ctx, 1, "kernel pointer\n");
   3452 		instr_out(ctx, 2,
   3453 			  "SPF=%d, VME=%d, Sampler Count %d, "
   3454 			  "Binding table count %d\n", (data[2] >> 31) & 1,
   3455 			  (data[2] >> 30) & 1, (data[2] >> 27) & 7,
   3456 			  (data[2] >> 18) & 0xff);
   3457 		instr_out(ctx, 3, "scratch offset\n");
   3458 		instr_out(ctx, 4,
   3459 			  "Dispatch GRF start %d, VUE read length %d, "
   3460 			  "VUE read offset %d\n", (data[4] >> 20) & 0x1f,
   3461 			  (data[4] >> 11) & 0x3f, (data[4] >> 4) & 0x3f);
   3462 		instr_out(ctx, 5,
   3463 			  "Max Threads %d, Vertex Cache %sable, "
   3464 			  "VS func %sable\n", ((data[5] >> 25) & 0x7f) + 1,
   3465 			  (data[5] & (1 << 1)) != 0 ? "dis" : "en",
   3466 			  (data[5] & 1) != 0 ? "en" : "dis");
   3467 		return len;
   3468 
   3469 	case 0x7811:
   3470 		instr_out(ctx, 0, "3DSTATE_GS\n");
   3471 		instr_out(ctx, 1, "kernel pointer\n");
   3472 		instr_out(ctx, 2,
   3473 			  "SPF=%d, VME=%d, Sampler Count %d, "
   3474 			  "Binding table count %d\n", (data[2] >> 31) & 1,
   3475 			  (data[2] >> 30) & 1, (data[2] >> 27) & 7,
   3476 			  (data[2] >> 18) & 0xff);
   3477 		instr_out(ctx, 3, "scratch offset\n");
   3478 		instr_out(ctx, 4,
   3479 			  "Dispatch GRF start %d, VUE read length %d, "
   3480 			  "VUE read offset %d\n", (data[4] & 0xf),
   3481 			  (data[4] >> 11) & 0x3f, (data[4] >> 4) & 0x3f);
   3482 		instr_out(ctx, 5,
   3483 			  "Max Threads %d, Rendering %sable\n",
   3484 			  ((data[5] >> 25) & 0x7f) + 1,
   3485 			  (data[5] & (1 << 8)) != 0 ? "en" : "dis");
   3486 		instr_out(ctx, 6,
   3487 			  "Reorder %sable, Discard Adjaceny %sable, "
   3488 			  "GS %sable\n",
   3489 			  (data[6] & (1 << 30)) != 0 ? "en" : "dis",
   3490 			  (data[6] & (1 << 29)) != 0 ? "en" : "dis",
   3491 			  (data[6] & (1 << 15)) != 0 ? "en" : "dis");
   3492 		return len;
   3493 
   3494 	case 0x7812:
   3495 		instr_out(ctx, 0, "3DSTATE_CLIP\n");
   3496 		instr_out(ctx, 1,
   3497 			  "UserClip distance cull test mask 0x%x\n",
   3498 			  data[1] & 0xff);
   3499 		instr_out(ctx, 2,
   3500 			  "Clip %sable, API mode %s, Viewport XY test %sable, "
   3501 			  "Viewport Z test %sable, Guardband test %sable, Clip mode %d, "
   3502 			  "Perspective Divide %sable, Non-Perspective Barycentric %sable, "
   3503 			  "Tri Provoking %d, Line Provoking %d, Trifan Provoking %d\n",
   3504 			  (data[2] & (1 << 31)) != 0 ? "en" : "dis",
   3505 			  (data[2] & (1 << 30)) != 0 ? "D3D" : "OGL",
   3506 			  (data[2] & (1 << 28)) != 0 ? "en" : "dis",
   3507 			  (data[2] & (1 << 27)) != 0 ? "en" : "dis",
   3508 			  (data[2] & (1 << 26)) != 0 ? "en" : "dis",
   3509 			  (data[2] >> 13) & 7,
   3510 			  (data[2] & (1 << 9)) != 0 ? "dis" : "en",
   3511 			  (data[2] & (1 << 8)) != 0 ? "en" : "dis",
   3512 			  (data[2] >> 4) & 3, (data[2] >> 2) & 3,
   3513 			  (data[2] & 3));
   3514 		instr_out(ctx, 3,
   3515 			  "Min PointWidth %d, Max PointWidth %d, "
   3516 			  "Force Zero RTAIndex %sable, Max VPIndex %d\n",
   3517 			  (data[3] >> 17) & 0x7ff, (data[3] >> 6) & 0x7ff,
   3518 			  (data[3] & (1 << 5)) != 0 ? "en" : "dis",
   3519 			  (data[3] & 0xf));
   3520 		return len;
   3521 
   3522 	case 0x7813:
   3523 		if (ctx->gen == 7)
   3524 			break;
   3525 
   3526 		instr_out(ctx, 0, "3DSTATE_SF\n");
   3527 		instr_out(ctx, 1,
   3528 			  "Attrib Out %d, Attrib Swizzle %sable, VUE read length %d, "
   3529 			  "VUE read offset %d\n", (data[1] >> 22) & 0x3f,
   3530 			  (data[1] & (1 << 21)) != 0 ? "en" : "dis",
   3531 			  (data[1] >> 11) & 0x1f, (data[1] >> 4) & 0x3f);
   3532 		instr_out(ctx, 2,
   3533 			  "Legacy Global DepthBias %sable, FrontFace fill %d, BF fill %d, "
   3534 			  "VP transform %sable, FrontWinding_%s\n",
   3535 			  (data[2] & (1 << 11)) != 0 ? "en" : "dis",
   3536 			  (data[2] >> 5) & 3, (data[2] >> 3) & 3,
   3537 			  (data[2] & (1 << 1)) != 0 ? "en" : "dis",
   3538 			  (data[2] & 1) != 0 ? "CCW" : "CW");
   3539 		instr_out(ctx, 3,
   3540 			  "AA %sable, CullMode %d, Scissor %sable, Multisample m ode %d\n",
   3541 			  (data[3] & (1 << 31)) != 0 ? "en" : "dis",
   3542 			  (data[3] >> 29) & 3,
   3543 			  (data[3] & (1 << 11)) != 0 ? "en" : "dis",
   3544 			  (data[3] >> 8) & 3);
   3545 		instr_out(ctx, 4,
   3546 			  "Last Pixel %sable, SubPixel Precision %d, Use PixelWidth %d\n",
   3547 			  (data[4] & (1 << 31)) != 0 ? "en" : "dis",
   3548 			  (data[4] & (1 << 12)) != 0 ? 4 : 8,
   3549 			  (data[4] & (1 << 11)) != 0);
   3550 		instr_out(ctx, 5,
   3551 			  "Global Depth Offset Constant %f\n",
   3552 			  *(float *)(&data[5]));
   3553 		instr_out(ctx, 6, "Global Depth Offset Scale %f\n",
   3554 			  *(float *)(&data[6]));
   3555 		instr_out(ctx, 7, "Global Depth Offset Clamp %f\n",
   3556 			  *(float *)(&data[7]));
   3557 
   3558 		for (i = 0, j = 0; i < 8; i++, j += 2)
   3559 			instr_out(ctx, i + 8,
   3560 				  "Attrib %d (Override %s%s%s%s, Const Source %d, Swizzle Select %d, "
   3561 				  "Source %d); Attrib %d (Override %s%s%s%s, Const Source %d, Swizzle Select %d, Source %d)\n",
   3562 				  j + 1,
   3563 				  (data[8 + i] & (1 << 31)) != 0 ? "W" : "",
   3564 				  (data[8 + i] & (1 << 30)) != 0 ? "Z" : "",
   3565 				  (data[8 + i] & (1 << 29)) != 0 ? "Y" : "",
   3566 				  (data[8 + i] & (1 << 28)) != 0 ? "X" : "",
   3567 				  (data[8 + i] >> 25) & 3,
   3568 				  (data[8 + i] >> 22) & 3,
   3569 				  (data[8 + i] >> 16) & 0x1f, j,
   3570 				  (data[8 + i] & (1 << 15)) != 0 ? "W" : "",
   3571 				  (data[8 + i] & (1 << 14)) != 0 ? "Z" : "",
   3572 				  (data[8 + i] & (1 << 13)) != 0 ? "Y" : "",
   3573 				  (data[8 + i] & (1 << 12)) != 0 ? "X" : "",
   3574 				  (data[8 + i] >> 9) & 3,
   3575 				  (data[8 + i] >> 6) & 3, (data[8 + i] & 0x1f));
   3576 		instr_out(ctx, 16,
   3577 			  "Point Sprite TexCoord Enable\n");
   3578 		instr_out(ctx, 17, "Const Interp Enable\n");
   3579 		instr_out(ctx, 18,
   3580 			  "Attrib 7-0 WrapShortest Enable\n");
   3581 		instr_out(ctx, 19,
   3582 			  "Attrib 15-8 WrapShortest Enable\n");
   3583 
   3584 		return len;
   3585 
   3586 	case 0x7900:
   3587 		instr_out(ctx, 0, "3DSTATE_DRAWING_RECTANGLE\n");
   3588 		instr_out(ctx, 1, "top left: %d,%d\n",
   3589 			  data[1] & 0xffff, (data[1] >> 16) & 0xffff);
   3590 		instr_out(ctx, 2, "bottom right: %d,%d\n",
   3591 			  data[2] & 0xffff, (data[2] >> 16) & 0xffff);
   3592 		instr_out(ctx, 3, "origin: %d,%d\n",
   3593 			  (int)data[3] & 0xffff, ((int)data[3] >> 16) & 0xffff);
   3594 
   3595 		return len;
   3596 
   3597 	case 0x7905:
   3598 		instr_out(ctx, 0, "3DSTATE_DEPTH_BUFFER\n");
   3599 		if (IS_GEN5(devid) || IS_GEN6(devid))
   3600 			instr_out(ctx, 1,
   3601 				  "%s, %s, pitch = %d bytes, %stiled, HiZ %d, Separate Stencil %d\n",
   3602 				  get_965_surfacetype(data[1] >> 29),
   3603 				  get_965_depthformat((data[1] >> 18) & 0x7),
   3604 				  (data[1] & 0x0001ffff) + 1,
   3605 				  data[1] & (1 << 27) ? "" : "not ",
   3606 				  (data[1] & (1 << 22)) != 0,
   3607 				  (data[1] & (1 << 21)) != 0);
   3608 		else
   3609 			instr_out(ctx, 1,
   3610 				  "%s, %s, pitch = %d bytes, %stiled\n",
   3611 				  get_965_surfacetype(data[1] >> 29),
   3612 				  get_965_depthformat((data[1] >> 18) & 0x7),
   3613 				  (data[1] & 0x0001ffff) + 1,
   3614 				  data[1] & (1 << 27) ? "" : "not ");
   3615 		instr_out(ctx, 2, "depth offset\n");
   3616 		instr_out(ctx, 3, "%dx%d\n",
   3617 			  ((data[3] & 0x0007ffc0) >> 6) + 1,
   3618 			  ((data[3] & 0xfff80000) >> 19) + 1);
   3619 		instr_out(ctx, 4, "volume depth\n");
   3620 		if (len >= 6)
   3621 			instr_out(ctx, 5, "\n");
   3622 		if (len >= 7) {
   3623 			if (IS_GEN6(devid))
   3624 				instr_out(ctx, 6, "\n");
   3625 			else
   3626 				instr_out(ctx, 6,
   3627 					  "render target view extent\n");
   3628 		}
   3629 
   3630 		return len;
   3631 
   3632 	case 0x7a00:
   3633 		if (IS_GEN6(devid) || IS_GEN7(devid)) {
   3634 			if (len != 4 && len != 5)
   3635 				fprintf(out, "Bad count in PIPE_CONTROL\n");
   3636 
   3637 			switch ((data[1] >> 14) & 0x3) {
   3638 			case 0:
   3639 				desc1 = "no write";
   3640 				break;
   3641 			case 1:
   3642 				desc1 = "qword write";
   3643 				break;
   3644 			case 2:
   3645 				desc1 = "PS_DEPTH_COUNT write";
   3646 				break;
   3647 			case 3:
   3648 				desc1 = "TIMESTAMP write";
   3649 				break;
   3650 			}
   3651 			instr_out(ctx, 0, "PIPE_CONTROL\n");
   3652 			instr_out(ctx, 1,
   3653 				  "%s, %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
   3654 				  desc1,
   3655 				  data[1] & (1 << 20) ? "cs stall, " : "",
   3656 				  data[1] & (1 << 19) ?
   3657 				  "global snapshot count reset, " : "",
   3658 				  data[1] & (1 << 18) ? "tlb invalidate, " : "",
   3659 				  data[1] & (1 << 17) ? "gfdt flush, " : "",
   3660 				  data[1] & (1 << 17) ? "media state clear, " :
   3661 				  "",
   3662 				  data[1] & (1 << 13) ? "depth stall, " : "",
   3663 				  data[1] & (1 << 12) ?
   3664 				  "render target cache flush, " : "",
   3665 				  data[1] & (1 << 11) ?
   3666 				  "instruction cache invalidate, " : "",
   3667 				  data[1] & (1 << 10) ?
   3668 				  "texture cache invalidate, " : "",
   3669 				  data[1] & (1 << 9) ?
   3670 				  "indirect state invalidate, " : "",
   3671 				  data[1] & (1 << 8) ? "notify irq, " : "",
   3672 				  data[1] & (1 << 7) ? "PIPE_CONTROL flush, " :
   3673 				  "",
   3674 				  data[1] & (1 << 6) ? "protect mem app_id, " :
   3675 				  "", data[1] & (1 << 5) ? "DC flush, " : "",
   3676 				  data[1] & (1 << 4) ? "vf fetch invalidate, " :
   3677 				  "",
   3678 				  data[1] & (1 << 3) ?
   3679 				  "constant cache invalidate, " : "",
   3680 				  data[1] & (1 << 2) ?
   3681 				  "state cache invalidate, " : "",
   3682 				  data[1] & (1 << 1) ? "stall at scoreboard, " :
   3683 				  "",
   3684 				  data[1] & (1 << 0) ? "depth cache flush, " :
   3685 				  "");
   3686 			if (len == 5) {
   3687 				instr_out(ctx, 2,
   3688 					  "destination address\n");
   3689 				instr_out(ctx, 3,
   3690 					  "immediate dword low\n");
   3691 				instr_out(ctx, 4,
   3692 					  "immediate dword high\n");
   3693 			} else {
   3694 				for (i = 2; i < len; i++) {
   3695 					instr_out(ctx, i, "\n");
   3696 				}
   3697 			}
   3698 			return len;
   3699 		} else {
   3700 			if (len != 4)
   3701 				fprintf(out, "Bad count in PIPE_CONTROL\n");
   3702 
   3703 			switch ((data[0] >> 14) & 0x3) {
   3704 			case 0:
   3705 				desc1 = "no write";
   3706 				break;
   3707 			case 1:
   3708 				desc1 = "qword write";
   3709 				break;
   3710 			case 2:
   3711 				desc1 = "PS_DEPTH_COUNT write";
   3712 				break;
   3713 			case 3:
   3714 				desc1 = "TIMESTAMP write";
   3715 				break;
   3716 			}
   3717 			instr_out(ctx, 0,
   3718 				  "PIPE_CONTROL: %s, %sdepth stall, %sRC write flush, "
   3719 				  "%sinst flush\n",
   3720 				  desc1,
   3721 				  data[0] & (1 << 13) ? "" : "no ",
   3722 				  data[0] & (1 << 12) ? "" : "no ",
   3723 				  data[0] & (1 << 11) ? "" : "no ");
   3724 			instr_out(ctx, 1, "destination address\n");
   3725 			instr_out(ctx, 2, "immediate dword low\n");
   3726 			instr_out(ctx, 3, "immediate dword high\n");
   3727 			return len;
   3728 		}
   3729 	}
   3730 
   3731 	if (opcode_3d) {
   3732 		if (opcode_3d->func) {
   3733 			return opcode_3d->func(ctx);
   3734 		} else {
   3735 			instr_out(ctx, 0, "%s\n", opcode_3d->name);
   3736 
   3737 			for (i = 1; i < len; i++) {
   3738 				instr_out(ctx, i, "dword %d\n", i);
   3739 			}
   3740 			return len;
   3741 		}
   3742 	}
   3743 
   3744 	instr_out(ctx, 0, "3D UNKNOWN: 3d_965 opcode = 0x%x\n",
   3745 		  opcode);
   3746 	return 1;
   3747 }
   3748 
   3749 static int
   3750 decode_3d_i830(struct drm_intel_decode *ctx)
   3751 {
   3752 	unsigned int idx;
   3753 	uint32_t opcode;
   3754 	uint32_t *data = ctx->data;
   3755 
   3756 	struct {
   3757 		uint32_t opcode;
   3758 		unsigned int min_len;
   3759 		unsigned int max_len;
   3760 		const char *name;
   3761 	} opcodes_3d[] = {
   3762 		{ 0x02, 1, 1, "3DSTATE_MODES_3" },
   3763 		{ 0x03, 1, 1, "3DSTATE_ENABLES_1" },
   3764 		{ 0x04, 1, 1, "3DSTATE_ENABLES_2" },
   3765 		{ 0x05, 1, 1, "3DSTATE_VFT0" },
   3766 		{ 0x06, 1, 1, "3DSTATE_AA" },
   3767 		{ 0x07, 1, 1, "3DSTATE_RASTERIZATION_RULES" },
   3768 		{ 0x08, 1, 1, "3DSTATE_MODES_1" },
   3769 		{ 0x09, 1, 1, "3DSTATE_STENCIL_TEST" },
   3770 		{ 0x0a, 1, 1, "3DSTATE_VFT1" },
   3771 		{ 0x0b, 1, 1, "3DSTATE_INDPT_ALPHA_BLEND" },
   3772 		{ 0x0c, 1, 1, "3DSTATE_MODES_5" },
   3773 		{ 0x0d, 1, 1, "3DSTATE_MAP_BLEND_OP" },
   3774 		{ 0x0e, 1, 1, "3DSTATE_MAP_BLEND_ARG" },
   3775 		{ 0x0f, 1, 1, "3DSTATE_MODES_2" },
   3776 		{ 0x15, 1, 1, "3DSTATE_FOG_COLOR" },
   3777 		{ 0x16, 1, 1, "3DSTATE_MODES_4"},
   3778 	}, *opcode_3d;
   3779 
   3780 	opcode = (data[0] & 0x1f000000) >> 24;
   3781 
   3782 	switch (opcode) {
   3783 	case 0x1f:
   3784 		return decode_3d_primitive(ctx);
   3785 	case 0x1d:
   3786 		return decode_3d_1d(ctx);
   3787 	case 0x1c:
   3788 		return decode_3d_1c(ctx);
   3789 	}
   3790 
   3791 	for (idx = 0; idx < ARRAY_SIZE(opcodes_3d); idx++) {
   3792 		opcode_3d = &opcodes_3d[idx];
   3793 		if ((data[0] & 0x1f000000) >> 24 == opcode_3d->opcode) {
   3794 			unsigned int len = 1, i;
   3795 
   3796 			instr_out(ctx, 0, "%s\n", opcode_3d->name);
   3797 			if (opcode_3d->max_len > 1) {
   3798 				len = (data[0] & 0xff) + 2;
   3799 				if (len < opcode_3d->min_len ||
   3800 				    len > opcode_3d->max_len) {
   3801 					fprintf(out, "Bad count in %s\n",
   3802 						opcode_3d->name);
   3803 				}
   3804 			}
   3805 
   3806 			for (i = 1; i < len; i++) {
   3807 				instr_out(ctx, i, "dword %d\n", i);
   3808 			}
   3809 			return len;
   3810 		}
   3811 	}
   3812 
   3813 	instr_out(ctx, 0, "3D UNKNOWN: 3d_i830 opcode = 0x%x\n",
   3814 		  opcode);
   3815 	return 1;
   3816 }
   3817 
   3818 struct drm_intel_decode *
   3819 drm_intel_decode_context_alloc(uint32_t devid)
   3820 {
   3821 	struct drm_intel_decode *ctx;
   3822 
   3823 	ctx = calloc(1, sizeof(struct drm_intel_decode));
   3824 	if (!ctx)
   3825 		return NULL;
   3826 
   3827 	ctx->devid = devid;
   3828 	ctx->out = stdout;
   3829 
   3830 	if (IS_GEN9(devid))
   3831 		ctx->gen = 9;
   3832 	else if (IS_GEN8(devid))
   3833 		ctx->gen = 8;
   3834 	else if (IS_GEN7(devid))
   3835 		ctx->gen = 7;
   3836 	else if (IS_GEN6(devid))
   3837 		ctx->gen = 6;
   3838 	else if (IS_GEN5(devid))
   3839 		ctx->gen = 5;
   3840 	else if (IS_GEN4(devid))
   3841 		ctx->gen = 4;
   3842 	else if (IS_9XX(devid))
   3843 		ctx->gen = 3;
   3844 	else {
   3845 		assert(IS_GEN2(devid));
   3846 		ctx->gen = 2;
   3847 	}
   3848 
   3849 	return ctx;
   3850 }
   3851 
   3852 void
   3853 drm_intel_decode_context_free(struct drm_intel_decode *ctx)
   3854 {
   3855 	free(ctx);
   3856 }
   3857 
   3858 void
   3859 drm_intel_decode_set_dump_past_end(struct drm_intel_decode *ctx,
   3860 				   int dump_past_end)
   3861 {
   3862 	ctx->dump_past_end = !!dump_past_end;
   3863 }
   3864 
   3865 void
   3866 drm_intel_decode_set_batch_pointer(struct drm_intel_decode *ctx,
   3867 				   void *data, uint32_t hw_offset, int count)
   3868 {
   3869 	ctx->base_data = data;
   3870 	ctx->base_hw_offset = hw_offset;
   3871 	ctx->base_count = count;
   3872 }
   3873 
   3874 void
   3875 drm_intel_decode_set_head_tail(struct drm_intel_decode *ctx,
   3876 			       uint32_t head, uint32_t tail)
   3877 {
   3878 	ctx->head = head;
   3879 	ctx->tail = tail;
   3880 }
   3881 
   3882 void
   3883 drm_intel_decode_set_output_file(struct drm_intel_decode *ctx,
   3884 				 FILE *output)
   3885 {
   3886 	ctx->out = output;
   3887 }
   3888 
   3889 /**
   3890  * Decodes an i830-i915 batch buffer, writing the output to stdout.
   3891  *
   3892  * \param data batch buffer contents
   3893  * \param count number of DWORDs to decode in the batch buffer
   3894  * \param hw_offset hardware address for the buffer
   3895  */
   3896 void
   3897 drm_intel_decode(struct drm_intel_decode *ctx)
   3898 {
   3899 	int ret;
   3900 	unsigned int index = 0;
   3901 	uint32_t devid;
   3902 	int size = ctx->base_count * 4;
   3903 	void *temp;
   3904 
   3905 	if (!ctx)
   3906 		return;
   3907 
   3908 	/* Put a scratch page full of obviously undefined data after
   3909 	 * the batchbuffer.  This lets us avoid a bunch of length
   3910 	 * checking in statically sized packets.
   3911 	 */
   3912 	temp = malloc(size + 4096);
   3913 	memcpy(temp, ctx->base_data, size);
   3914 	memset((char *)temp + size, 0xd0, 4096);
   3915 	ctx->data = temp;
   3916 
   3917 	ctx->hw_offset = ctx->base_hw_offset;
   3918 	ctx->count = ctx->base_count;
   3919 
   3920 	devid = ctx->devid;
   3921 	head_offset = ctx->head;
   3922 	tail_offset = ctx->tail;
   3923 	out = ctx->out;
   3924 
   3925 	saved_s2_set = 0;
   3926 	saved_s4_set = 1;
   3927 
   3928 	while (ctx->count > 0) {
   3929 		index = 0;
   3930 
   3931 		switch ((ctx->data[index] & 0xe0000000) >> 29) {
   3932 		case 0x0:
   3933 			ret = decode_mi(ctx);
   3934 
   3935 			/* If MI_BATCHBUFFER_END happened, then dump
   3936 			 * the rest of the output in case we some day
   3937 			 * want it in debugging, but don't decode it
   3938 			 * since it'll just confuse in the common
   3939 			 * case.
   3940 			 */
   3941 			if (ret == -1) {
   3942 				if (ctx->dump_past_end) {
   3943 					index++;
   3944 				} else {
   3945 					for (index = index + 1; index < ctx->count;
   3946 					     index++) {
   3947 						instr_out(ctx, index, "\n");
   3948 					}
   3949 				}
   3950 			} else
   3951 				index += ret;
   3952 			break;
   3953 		case 0x2:
   3954 			index += decode_2d(ctx);
   3955 			break;
   3956 		case 0x3:
   3957 			if (IS_9XX(devid) && !IS_GEN3(devid)) {
   3958 				index +=
   3959 				    decode_3d_965(ctx);
   3960 			} else if (IS_GEN3(devid)) {
   3961 				index += decode_3d(ctx);
   3962 			} else {
   3963 				index +=
   3964 				    decode_3d_i830(ctx);
   3965 			}
   3966 			break;
   3967 		default:
   3968 			instr_out(ctx, index, "UNKNOWN\n");
   3969 			index++;
   3970 			break;
   3971 		}
   3972 		fflush(out);
   3973 
   3974 		if (ctx->count < index)
   3975 			break;
   3976 
   3977 		ctx->count -= index;
   3978 		ctx->data += index;
   3979 		ctx->hw_offset += 4 * index;
   3980 	}
   3981 
   3982 	free(temp);
   3983 }
   3984