tests/gem_dummy_reloc_loop.c

   1 /*
   2  * Copyright © 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  * Authors:
  24  *    Daniel Vetter <daniel.vetter@ffwll.ch> (based on gem_storedw_*.c)
  25  *
  26  */
  27
  28 #include <stdlib.h>
  29 #include <stdio.h>
  30 #include <string.h>
  31 #include <assert.h>
  32 #include <fcntl.h>
  33 #include <inttypes.h>
  34 #include <errno.h>
  35 #include <sys/stat.h>
  36 #include <sys/time.h>
  37 #include "drm.h"
  38 #include "i915_drm.h"
  39 #include "drmtest.h"
  40 #include "intel_bufmgr.h"
  41 #include "intel_batchbuffer.h"
  42 #include "intel_gpu_tools.h"
  43 #include "i830_reg.h"
  44
  45 #define LOCAL_I915_EXEC_VEBOX (4<<0)
  46
  47 static drm_intel_bufmgr *bufmgr;
  48 struct intel_batchbuffer *batch;
  49 static drm_intel_bo *target_buffer;
  50
  51 /*
  52  * Testcase: Basic check of ring<->cpu sync using a dummy reloc
  53  *
  54  * The last test (that randomly switches the ring) seems to be pretty effective
  55  * at hitting the missed irq bug that's worked around with the HWSTAM irq write.
  56  */
  57
  58
  59 #define MI_COND_BATCH_BUFFER_END        (0x36<<23 | 1)
  60 #define MI_DO_COMPARE                   (1<<21)
  61 static void
  62 dummy_reloc_loop(int ring)
  63 {
  64         int i;
  65
  66         for (i = 0; i < 0x100000; i++) {
  67                 if (ring == I915_EXEC_RENDER) {
  68                         BEGIN_BATCH(4);
  69                         OUT_BATCH(MI_COND_BATCH_BUFFER_END | MI_DO_COMPARE);
  70                         OUT_BATCH(0xffffffff); /* compare dword */
  71                         OUT_RELOC(target_buffer, I915_GEM_DOMAIN_RENDER,
  72                                         I915_GEM_DOMAIN_RENDER, 0);
  73                         OUT_BATCH(MI_NOOP);
  74                         ADVANCE_BATCH();
  75                 } else {
  76                         BEGIN_BATCH(4);
  77                         OUT_BATCH(MI_FLUSH_DW | 1);
  78                         OUT_BATCH(0); /* reserved */
  79                         OUT_RELOC(target_buffer, I915_GEM_DOMAIN_RENDER,
  80                                         I915_GEM_DOMAIN_RENDER, 0);
  81                         OUT_BATCH(MI_NOOP | (1<<22) | (0xf));
  82                         ADVANCE_BATCH();
  83                 }
  84                 intel_batchbuffer_flush_on_ring(batch, ring);
  85
  86                 drm_intel_bo_map(target_buffer, 0);
  87                 // map to force completion
  88                 drm_intel_bo_unmap(target_buffer);
  89         }
  90 }
  91
  92 static void
  93 dummy_reloc_loop_random_ring(int num_rings)
  94 {
  95         int i;
  96
  97         srandom(0xdeadbeef);
  98
  99         for (i = 0; i < 0x100000; i++) {
 100                 int ring = random() % num_rings + 1;
 101
 102                 if (ring == I915_EXEC_RENDER) {
 103                         BEGIN_BATCH(4);
 104                         OUT_BATCH(MI_COND_BATCH_BUFFER_END | MI_DO_COMPARE);
 105                         OUT_BATCH(0xffffffff); /* compare dword */
 106                         OUT_RELOC(target_buffer, I915_GEM_DOMAIN_RENDER,
 107                                         I915_GEM_DOMAIN_RENDER, 0);
 108                         OUT_BATCH(MI_NOOP);
 109                         ADVANCE_BATCH();
 110                 } else {
 111                         BEGIN_BATCH(4);
 112                         OUT_BATCH(MI_FLUSH_DW | 1);
 113                         OUT_BATCH(0); /* reserved */
 114                         OUT_RELOC(target_buffer, I915_GEM_DOMAIN_RENDER,
 115                                         I915_GEM_DOMAIN_RENDER, 0);
 116                         OUT_BATCH(MI_NOOP | (1<<22) | (0xf));
 117                         ADVANCE_BATCH();
 118                 }
 119                 intel_batchbuffer_flush_on_ring(batch, ring);
 120
 121                 drm_intel_bo_map(target_buffer, 0);
 122                 // map to force waiting on rendering
 123                 drm_intel_bo_unmap(target_buffer);
 124         }
 125 }
 126
 127 int main(int argc, char **argv)
 128 {
 129         int fd;
 130         int devid;
 131         int num_rings;
 132
 133         drmtest_subtest_init(argc, argv);
 134         drmtest_skip_on_simulation();
 135
 136         fd = drm_open_any();
 137         devid = intel_get_drm_devid(fd);
 138         num_rings = gem_get_num_rings(fd);
 139         if (!HAS_BLT_RING(devid)) {
 140                 fprintf(stderr, "not (yet) implemented for pre-snb\n");
 141                 return 77;
 142         }
 143
 144         bufmgr = drm_intel_bufmgr_gem_init(fd, 4096);
 145         if (!bufmgr) {
 146                 fprintf(stderr, "failed to init libdrm\n");
 147                 exit(-1);
 148         }
 149         drm_intel_bufmgr_gem_enable_reuse(bufmgr);
 150
 151         batch = intel_batchbuffer_alloc(bufmgr, devid);
 152         if (!batch) {
 153                 fprintf(stderr, "failed to create batch buffer\n");
 154                 exit(-1);
 155         }
 156
 157         target_buffer = drm_intel_bo_alloc(bufmgr, "target bo", 4096, 4096);
 158         if (!target_buffer) {
 159                 fprintf(stderr, "failed to alloc target buffer\n");
 160                 exit(-1);
 161         }
 162
 163         if (drmtest_run_subtest("render")) {
 164                 printf("running dummy loop on render\n");
 165                 dummy_reloc_loop(I915_EXEC_RENDER);
 166                 printf("dummy loop run on render completed\n");
 167         }
 168
 169         if (drmtest_run_subtest("bsd")) {
 170                 if (HAS_BSD_RING(devid)) {
 171                         sleep(2);
 172                         printf("running dummy loop on bsd\n");
 173                         dummy_reloc_loop(I915_EXEC_BSD);
 174                         printf("dummy loop run on bsd completed\n");
 175                 }
 176         }
 177
 178         if (drmtest_run_subtest("blt")) {
 179                 if (HAS_BLT_RING(devid)) {
 180                         sleep(2);
 181                         printf("running dummy loop on blt\n");
 182                         dummy_reloc_loop(I915_EXEC_BLT);
 183                         printf("dummy loop run on blt completed\n");
 184                 }
 185         }
 186
 187         if (drmtest_run_subtest("vebox")) {
 188                 if (gem_has_vebox(fd)) {
 189                         sleep(2);
 190                         printf("running dummy loop on vebox\n");
 191                         dummy_reloc_loop(LOCAL_I915_EXEC_VEBOX);
 192                         printf("dummy loop run on vebox completed\n");
 193                 }
 194         }
 195
 196         if (drmtest_run_subtest("mixed")) {
 197                 if (num_rings > 1) {
 198                         sleep(2);
 199                         printf("running dummy loop on random rings\n");
 200                         dummy_reloc_loop_random_ring(num_rings);
 201                         printf("dummy loop run on random rings completed\n");
 202                 }
 203         }
 204
 205         drm_intel_bo_unreference(target_buffer);
 206         intel_batchbuffer_free(batch);
 207         drm_intel_bufmgr_destroy(bufmgr);
 208
 209         close(fd);
 210
 211         return 0;
 212 }