| /* |
| * 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 <chris@chris-wilson.co.uk> |
| * |
| */ |
| |
| #include "igt.h" |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <fcntl.h> |
| #include <inttypes.h> |
| #include <errno.h> |
| #include <setjmp.h> |
| #include <signal.h> |
| |
| #include "drm.h" |
| |
| IGT_TEST_DESCRIPTION("Checks that the kernel reports EFAULT when trying to use" |
| " purged bo."); |
| |
| #define OBJECT_SIZE (1024*1024) |
| |
| /* Testcase: checks that the kernel reports EFAULT when trying to use purged bo |
| * |
| */ |
| |
| static jmp_buf jmp; |
| |
| static void __attribute__((noreturn)) sigtrap(int sig) |
| { |
| longjmp(jmp, sig); |
| } |
| |
| static void |
| dontneed_before_mmap(void) |
| { |
| int fd = drm_open_driver(DRIVER_INTEL); |
| uint32_t handle; |
| char *ptr; |
| |
| handle = gem_create(fd, OBJECT_SIZE); |
| gem_madvise(fd, handle, I915_MADV_DONTNEED); |
| ptr = gem_mmap__gtt(fd, handle, OBJECT_SIZE, PROT_READ | PROT_WRITE); |
| close(fd); |
| |
| signal(SIGSEGV, sigtrap); |
| signal(SIGBUS, sigtrap); |
| switch (setjmp(jmp)) { |
| case SIGBUS: |
| break; |
| case 0: |
| *ptr = 0; |
| default: |
| igt_assert(!"reached"); |
| break; |
| } |
| munmap(ptr, OBJECT_SIZE); |
| signal(SIGBUS, SIG_DFL); |
| signal(SIGSEGV, SIG_DFL); |
| } |
| |
| static void |
| dontneed_after_mmap(void) |
| { |
| int fd = drm_open_driver(DRIVER_INTEL); |
| uint32_t handle; |
| char *ptr; |
| |
| handle = gem_create(fd, OBJECT_SIZE); |
| ptr = gem_mmap__gtt(fd, handle, OBJECT_SIZE, PROT_READ | PROT_WRITE); |
| igt_assert(ptr); |
| gem_madvise(fd, handle, I915_MADV_DONTNEED); |
| close(fd); |
| |
| signal(SIGBUS, sigtrap); |
| switch (setjmp(jmp)) { |
| case SIGBUS: |
| break; |
| case 0: |
| *ptr = 0; |
| default: |
| igt_assert(!"reached"); |
| break; |
| } |
| munmap(ptr, OBJECT_SIZE); |
| signal(SIGBUS, SIG_DFL); |
| } |
| |
| static void |
| dontneed_before_pwrite(void) |
| { |
| int fd = drm_open_driver(DRIVER_INTEL); |
| uint32_t buf[] = { MI_BATCH_BUFFER_END, 0 }; |
| struct drm_i915_gem_pwrite gem_pwrite; |
| |
| gem_pwrite.handle = gem_create(fd, OBJECT_SIZE); |
| gem_pwrite.offset = 0; |
| gem_pwrite.size = sizeof(buf); |
| gem_pwrite.data_ptr = to_user_pointer(buf); |
| gem_madvise(fd, gem_pwrite.handle, I915_MADV_DONTNEED); |
| |
| igt_assert(drmIoctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &gem_pwrite)); |
| igt_assert(errno == EFAULT); |
| |
| gem_close(fd, gem_pwrite.handle); |
| close(fd); |
| } |
| |
| static void |
| dontneed_before_exec(void) |
| { |
| int fd = drm_open_driver(DRIVER_INTEL); |
| struct drm_i915_gem_execbuffer2 execbuf; |
| struct drm_i915_gem_exec_object2 exec; |
| uint32_t buf[] = { MI_BATCH_BUFFER_END, 0 }; |
| |
| memset(&execbuf, 0, sizeof(execbuf)); |
| memset(&exec, 0, sizeof(exec)); |
| |
| exec.handle = gem_create(fd, OBJECT_SIZE); |
| gem_write(fd, exec.handle, 0, buf, sizeof(buf)); |
| gem_madvise(fd, exec.handle, I915_MADV_DONTNEED); |
| |
| execbuf.buffers_ptr = to_user_pointer(&exec); |
| execbuf.buffer_count = 1; |
| execbuf.batch_len = sizeof(buf); |
| gem_execbuf(fd, &execbuf); |
| |
| gem_close(fd, exec.handle); |
| close(fd); |
| } |
| |
| igt_main |
| { |
| igt_skip_on_simulation(); |
| |
| igt_subtest("dontneed-before-mmap") |
| dontneed_before_mmap(); |
| |
| igt_subtest("dontneed-after-mmap") |
| dontneed_after_mmap(); |
| |
| igt_subtest("dontneed-before-pwrite") |
| dontneed_before_pwrite(); |
| |
| igt_subtest("dontneed-before-exec") |
| dontneed_before_exec(); |
| } |