From daa9e3d80a6c25667b259e864376ac929d5a11bd Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Thu, 15 May 2014 08:43:11 +0100 Subject: [PATCH] Add gem_bad_reloc This test feeds a batch containing self-references into the kernel and checks that the relocation offsets remain as valid GTT addresses. This is to exercise SNA passing in negative relocation deltas which can hang the GPU if they wrap around. References: https://bugs.freedesktop.org/show_bug.cgi?id=78533 Signed-off-by: Chris Wilson --- tests/.gitignore | 1 + tests/Makefile.sources | 1 + tests/gem_bad_reloc.c | 116 +++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 118 insertions(+) create mode 100644 tests/gem_bad_reloc.c diff --git a/tests/.gitignore b/tests/.gitignore index ea1f0f9..4e27ead 100644 --- a/tests/.gitignore +++ b/tests/.gitignore @@ -14,6 +14,7 @@ gem_bad_address gem_bad_batch gem_bad_blit gem_bad_length +gem_bad_reloc gem_basic gem_caching gem_close_race diff --git a/tests/Makefile.sources b/tests/Makefile.sources index 393c4a2..4bdef36 100644 --- a/tests/Makefile.sources +++ b/tests/Makefile.sources @@ -17,6 +17,7 @@ NOUVEAU_TESTS_M = \ TESTS_progs_M = \ core_get_client_auth \ drv_suspend \ + gem_bad_reloc \ gem_basic \ gem_caching \ gem_close_race \ diff --git a/tests/gem_bad_reloc.c b/tests/gem_bad_reloc.c new file mode 100644 index 0000000..74649fc --- /dev/null +++ b/tests/gem_bad_reloc.c @@ -0,0 +1,116 @@ +/* + * Copyright © 2014 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + * + * Authors: + * Chris Wilson + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "drm.h" +#include "ioctl_wrappers.h" +#include "drmtest.h" +#include "intel_io.h" + +/* Simulates SNA behaviour using negative self-relocations for + * STATE_BASE_ADDRESS command packets. If they wrap around (to values greater + * than the total size of the GTT), the GPU will hang. + * See https://bugs.freedesktop.org/show_bug.cgi?id=78533 + */ +static int negative_reloc(int fd, uint32_t handle) +{ + struct drm_i915_gem_execbuffer2 execbuf; + struct drm_i915_gem_exec_object2 gem_exec; + struct drm_i915_gem_relocation_entry gem_reloc[1000]; + uint64_t gtt_max = gem_aperture_size(fd); + uint32_t buf[1024]; + int i; + + memset(&gem_exec, 0, sizeof(gem_exec)); + gem_exec.handle = handle; + + memset(&execbuf, 0, sizeof(execbuf)); + execbuf.buffers_ptr = (uintptr_t)&gem_exec; + execbuf.buffer_count = 1; + execbuf.batch_len = 8; + + do_or_die(drmIoctl(fd, + DRM_IOCTL_I915_GEM_EXECBUFFER2, + &execbuf)); + + printf("Found offset %ld for 4k batch\n", (long)gem_exec.offset); + igt_require(gem_exec.offset < 16*1024*1024); + + memset(gem_reloc, 0, sizeof(gem_reloc)); + for (i = 0; i < sizeof(gem_reloc)/sizeof(gem_reloc[0]); i++) { + gem_reloc[i].offset = 8 + 4*i; + gem_reloc[i].delta = -16*1024*i; + gem_reloc[i].target_handle = handle; + gem_reloc[i].read_domains = I915_GEM_DOMAIN_COMMAND; + } + + gem_exec.relocation_count = 1000; + gem_exec.relocs_ptr = (uintptr_t)gem_reloc; + + do_or_die(drmIoctl(fd, + DRM_IOCTL_I915_GEM_EXECBUFFER2, + &execbuf)); + + gem_read(fd, handle, 0, buf, sizeof(buf)); + for (i = 0; i < sizeof(gem_reloc)/sizeof(gem_reloc[0]); i++) + igt_assert(buf[2 + i] < gtt_max); + + return 0; +} + +uint32_t batch[2] = {MI_BATCH_BUFFER_END}; +uint32_t handle; +int fd; + +igt_main +{ + igt_fixture { + fd = drm_open_any(); + + handle = gem_create(fd, 4096); + gem_write(fd, handle, 0, batch, sizeof(batch)); + } + + igt_subtest("negative-reloc") + negative_reloc(fd, handle); + + igt_fixture { + gem_close(fd, handle); + + close(fd); + } +} -- 2.7.4