2 * Copyright © 2011,2012 Intel Corporation
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:
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
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
24 * Chris Wilson <chris@chris-wilson.co.uk>
25 * Daniel Vetter <daniel.vetter@ffwll.ch>
30 * Testcase: Check whether we correctly invalidate the cs tlb
32 * Motivated by a strange bug on launchpad where *acth != ipehr, on snb notably
33 * where everything should be coherent by default.
35 * https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1063252
48 #include <sys/ioctl.h>
54 #include "intel_gpu_tools.h"
56 #define LOCAL_I915_EXEC_VEBOX (4<<0)
57 #define BATCH_SIZE (1024*1024)
59 static int exec(int fd, uint32_t handle, int split,
60 uint64_t *gtt_ofs, unsigned ring_id)
62 struct drm_i915_gem_execbuffer2 execbuf;
63 struct drm_i915_gem_exec_object2 gem_exec[1];
66 gem_exec[0].handle = handle;
67 gem_exec[0].relocation_count = 0;
68 gem_exec[0].relocs_ptr = 0;
69 gem_exec[0].alignment = 0;
70 gem_exec[0].offset = 0x00100000;
71 gem_exec[0].flags = 0;
72 gem_exec[0].rsvd1 = 0;
73 gem_exec[0].rsvd2 = 0;
75 execbuf.buffers_ptr = (uintptr_t)gem_exec;
76 execbuf.buffer_count = 1;
77 execbuf.batch_start_offset = 0;
78 execbuf.batch_len = 8*(split+1);
79 execbuf.cliprects_ptr = 0;
80 execbuf.num_cliprects = 0;
83 execbuf.flags = ring_id;
84 i915_execbuffer2_set_context_id(execbuf, 0);
88 DRM_IOCTL_I915_GEM_EXECBUFFER2,
91 *gtt_ofs = gem_exec[0].offset;
96 static void run_on_ring(int fd, unsigned ring_id, const char *ring_name)
98 uint32_t handle, handle_new;
99 uint64_t gtt_offset, gtt_offset_new;
100 uint32_t *batch_ptr, *batch_ptr_old;
105 sprintf(buf, "testing %s cs tlb coherency: ", ring_name);
107 /* Shut up gcc, too stupid. */
108 batch_ptr_old = NULL;
112 for (split = 0; split < BATCH_SIZE/8 - 1; split += 2) {
113 igt_progress(buf, split, BATCH_SIZE/8 - 1);
115 handle_new = gem_create(fd, BATCH_SIZE);
116 batch_ptr = gem_mmap__cpu(fd, handle_new, BATCH_SIZE,
117 PROT_READ | PROT_WRITE);
118 batch_ptr[split*2] = MI_BATCH_BUFFER_END;
120 for (i = split*2 + 2; i < BATCH_SIZE/8; i++)
121 batch_ptr[i] = 0xffffffff;
124 gem_sync(fd, handle);
125 gem_close(fd, handle);
128 if (exec(fd, handle_new, split, >t_offset_new, 0))
132 /* Check that we've managed to collide in the tlb. */
133 assert(gtt_offset == gtt_offset_new);
135 /* We hang onto the storage of the old batch by keeping
136 * the cpu mmap around. */
137 munmap(batch_ptr_old, BATCH_SIZE);
141 gtt_offset = gtt_offset_new;
142 batch_ptr_old = batch_ptr;
147 int main(int argc, char **argv)
151 igt_subtest_init(argc, argv);
152 igt_skip_on_simulation();
156 if (!igt_only_list_subtests()) {
157 /* This test is very sensitive to residual gtt_mm noise from previous
158 * tests. Try to quiet thing down first. */
159 gem_quiescent_gpu(fd);
160 sleep(5); /* needs more serious ducttape */
163 igt_subtest("render")
164 run_on_ring(fd, I915_EXEC_RENDER, "render");
167 if (gem_check_bsd(fd))
168 run_on_ring(fd, I915_EXEC_BSD, "bsd");
171 if (gem_check_blt(fd))
172 run_on_ring(fd, I915_EXEC_BLT, "blt");
175 if (gem_check_vebox(fd))
176 run_on_ring(fd, LOCAL_I915_EXEC_VEBOX, "vebox");