| /* |
| * Copyright © 2009 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: |
| * Daniel Vetter <daniel.vetter@ffwll.ch> |
| * |
| */ |
| |
| /** @file gem_gtt_cpu_tlb.c |
| * |
| * This test checks whether gtt tlbs for cpu access are correctly invalidated. |
| */ |
| |
| #include "igt.h" |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <fcntl.h> |
| #include <inttypes.h> |
| #include <errno.h> |
| #include <sys/stat.h> |
| #include <sys/time.h> |
| #include <sys/ioctl.h> |
| #include "drm.h" |
| |
| IGT_TEST_DESCRIPTION("Check whether gtt tlbs for cpu access are correctly" |
| " invalidated."); |
| |
| #define OBJ_SIZE (1024*1024) |
| |
| #define PAGE_SIZE 4096 |
| |
| static uint32_t |
| create_bo(int fd) |
| { |
| uint32_t handle; |
| uint32_t *data; |
| int i; |
| |
| handle = gem_create(fd, OBJ_SIZE); |
| |
| /* Fill the BO with dwords starting at start_val */ |
| data = gem_mmap__gtt(fd, handle, OBJ_SIZE, PROT_READ | PROT_WRITE); |
| for (i = 0; i < OBJ_SIZE/4; i++) |
| data[i] = i; |
| munmap(data, OBJ_SIZE); |
| |
| return handle; |
| } |
| |
| igt_simple_main |
| { |
| int fd; |
| int i; |
| uint32_t handle; |
| |
| uint32_t *ptr; |
| |
| igt_skip_on_simulation(); |
| |
| fd = drm_open_driver(DRIVER_INTEL); |
| |
| handle = gem_create(fd, OBJ_SIZE); |
| |
| /* touch one page */ |
| ptr = gem_mmap__gtt(fd, handle, OBJ_SIZE, PROT_READ | PROT_WRITE); |
| *ptr = 0xdeadbeef; |
| munmap(ptr, OBJ_SIZE); |
| |
| gem_close(fd, handle); |
| |
| /* stirr up the page allocator a bit. */ |
| ptr = malloc(OBJ_SIZE); |
| igt_assert(ptr); |
| memset(ptr, 0x1, OBJ_SIZE); |
| |
| handle = create_bo(fd); |
| |
| /* Read a bunch of random subsets of the data and check that they come |
| * out right. |
| */ |
| gem_read(fd, handle, 0, ptr, OBJ_SIZE); |
| for (i = 0; i < OBJ_SIZE/4; i++) |
| igt_assert(ptr[i] == i); |
| |
| close(fd); |
| } |