Chris Wilson | 5c9c884 | 2014-02-04 14:14:31 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2014 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 | * Chris Wilson <chris@chris-wilson.co.uk> |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | #include <unistd.h> |
| 29 | #include <stdlib.h> |
| 30 | #include <stdio.h> |
| 31 | #include <string.h> |
| 32 | #include <fcntl.h> |
| 33 | #include <inttypes.h> |
| 34 | #include <errno.h> |
| 35 | #include <setjmp.h> |
| 36 | #include <signal.h> |
| 37 | |
| 38 | #include "drm.h" |
Daniel Vetter | e49ceb8 | 2014-03-22 21:07:37 +0100 | [diff] [blame^] | 39 | #include "ioctl_wrappers.h" |
Chris Wilson | 5c9c884 | 2014-02-04 14:14:31 +0000 | [diff] [blame] | 40 | #include "drmtest.h" |
| 41 | |
| 42 | #define OBJECT_SIZE (1024*1024) |
| 43 | |
| 44 | /* Testcase: checks that the kernel reports EFAULT when trying to use purged bo |
| 45 | * |
| 46 | */ |
| 47 | |
| 48 | static jmp_buf jmp; |
| 49 | |
| 50 | static void sigtrap(int sig) |
| 51 | { |
| 52 | longjmp(jmp, sig); |
| 53 | } |
| 54 | |
| 55 | static void |
| 56 | dontneed_before_mmap(void) |
| 57 | { |
| 58 | int fd = drm_open_any(); |
| 59 | uint32_t handle; |
| 60 | char *ptr; |
| 61 | |
| 62 | handle = gem_create(fd, OBJECT_SIZE); |
| 63 | gem_madvise(fd, handle, I915_MADV_DONTNEED); |
| 64 | ptr = gem_mmap(fd, handle, OBJECT_SIZE, PROT_READ | PROT_WRITE); |
| 65 | igt_assert(ptr == NULL); |
| 66 | igt_assert(errno == EFAULT); |
| 67 | close(fd); |
| 68 | } |
| 69 | |
| 70 | static void |
| 71 | dontneed_after_mmap(void) |
| 72 | { |
| 73 | int fd = drm_open_any(); |
| 74 | uint32_t handle; |
| 75 | char *ptr; |
| 76 | |
| 77 | handle = gem_create(fd, OBJECT_SIZE); |
| 78 | ptr = gem_mmap(fd, handle, OBJECT_SIZE, PROT_READ | PROT_WRITE); |
| 79 | igt_assert(ptr != NULL); |
| 80 | gem_madvise(fd, handle, I915_MADV_DONTNEED); |
| 81 | close(fd); |
| 82 | |
| 83 | signal(SIGBUS, sigtrap); |
| 84 | switch (setjmp(jmp)) { |
| 85 | case SIGBUS: |
| 86 | break; |
| 87 | case 0: |
| 88 | *ptr = 0; |
| 89 | default: |
| 90 | igt_assert(!"reached"); |
| 91 | break; |
| 92 | } |
| 93 | munmap(ptr, OBJECT_SIZE); |
| 94 | signal(SIGBUS, SIG_DFL); |
| 95 | } |
| 96 | |
| 97 | static void |
| 98 | dontneed_before_pwrite(void) |
| 99 | { |
| 100 | int fd = drm_open_any(); |
| 101 | uint32_t buf[] = { MI_BATCH_BUFFER_END, 0 }; |
| 102 | struct drm_i915_gem_pwrite gem_pwrite; |
| 103 | |
| 104 | gem_pwrite.handle = gem_create(fd, OBJECT_SIZE); |
| 105 | gem_pwrite.offset = 0; |
| 106 | gem_pwrite.size = sizeof(buf); |
| 107 | gem_pwrite.data_ptr = (uintptr_t)buf; |
| 108 | gem_madvise(fd, gem_pwrite.handle, I915_MADV_DONTNEED); |
| 109 | |
| 110 | igt_assert(drmIoctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &gem_pwrite)); |
| 111 | igt_assert(errno == EFAULT); |
| 112 | |
| 113 | gem_close(fd, gem_pwrite.handle); |
| 114 | close(fd); |
| 115 | } |
| 116 | |
| 117 | static void |
| 118 | dontneed_before_exec(void) |
| 119 | { |
| 120 | int fd = drm_open_any(); |
| 121 | struct drm_i915_gem_execbuffer2 execbuf; |
| 122 | struct drm_i915_gem_exec_object2 exec; |
| 123 | uint32_t buf[] = { MI_BATCH_BUFFER_END, 0 }; |
| 124 | |
| 125 | memset(&execbuf, 0, sizeof(execbuf)); |
| 126 | memset(&exec, 0, sizeof(exec)); |
| 127 | |
| 128 | exec.handle = gem_create(fd, OBJECT_SIZE); |
| 129 | gem_write(fd, exec.handle, 0, buf, sizeof(buf)); |
| 130 | gem_madvise(fd, exec.handle, I915_MADV_DONTNEED); |
| 131 | |
| 132 | execbuf.buffers_ptr = (uintptr_t)&exec; |
| 133 | execbuf.buffer_count = 1; |
| 134 | gem_execbuf(fd, &execbuf); |
| 135 | |
| 136 | gem_close(fd, exec.handle); |
| 137 | close(fd); |
| 138 | } |
| 139 | |
Daniel Vetter | 36be04b | 2014-02-11 23:52:43 +0100 | [diff] [blame] | 140 | igt_main |
Chris Wilson | 5c9c884 | 2014-02-04 14:14:31 +0000 | [diff] [blame] | 141 | { |
| 142 | igt_skip_on_simulation(); |
| 143 | |
| 144 | igt_subtest("dontneed-before-mmap") |
| 145 | dontneed_before_mmap(); |
| 146 | |
| 147 | igt_subtest("dontneed-after-mmap") |
| 148 | dontneed_after_mmap(); |
| 149 | |
| 150 | igt_subtest("dontneed-before-pwrite") |
| 151 | dontneed_before_pwrite(); |
| 152 | |
| 153 | igt_subtest("dontneed-before-exec") |
| 154 | dontneed_before_exec(); |
| 155 | } |