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157 lines
4.2 KiB
157 lines
4.2 KiB
/*
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* Copyright © 2009 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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*
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*/
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/** @file gem_tiled_pread_pwrite.c
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*
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* This is a test of pread's behavior on tiled objects with respect to the
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* reported swizzling value.
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*
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* The goal is to exercise the slow_bit17_copy path for reading on bit17
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* machines, but will also be useful for catching swizzling value bugs on
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* other systems.
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*/
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/*
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* Testcase: Test swizzling by testing pwrite does the inverse of pread
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*
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* Together with the explicit pread testcase, this should cover our swizzle
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* handling.
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*
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* Note that this test will use swap in an effort to test all of ram.
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*/
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#include "igt.h"
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#include "igt_x86.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/ioctl.h>
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#include <drm.h>
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IGT_TEST_DESCRIPTION("Test swizzling by testing pwrite does the inverse of"
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" pread.");
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#define WIDTH 512
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#define HEIGHT 512
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static uint32_t linear[WIDTH * HEIGHT];
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static uint32_t current_tiling_mode;
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#define PAGE_SIZE 4096
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static uint32_t
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create_bo_and_fill(int fd)
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{
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uint32_t handle;
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uint32_t *data;
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int i;
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handle = gem_create(fd, sizeof(linear));
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gem_set_tiling(fd, handle, current_tiling_mode, WIDTH * sizeof(uint32_t));
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/* Fill the BO with dwords starting at start_val */
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data = gem_mmap__gtt(fd, handle, sizeof(linear),
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PROT_READ | PROT_WRITE);
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gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
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for (i = 0; i < WIDTH*HEIGHT; i++)
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data[i] = i;
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munmap(data, sizeof(linear));
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return handle;
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}
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static uint32_t
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create_bo(int fd)
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{
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uint32_t handle;
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handle = gem_create(fd, sizeof(linear));
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gem_set_tiling(fd, handle, current_tiling_mode, WIDTH * sizeof(uint32_t));
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return handle;
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}
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static void copy_wc_page(void *dst, const void *src)
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{
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igt_memcpy_from_wc(dst, src, PAGE_SIZE);
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}
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igt_simple_main
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{
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uint32_t tiling, swizzle;
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int count;
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int fd;
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fd = drm_open_driver(DRIVER_INTEL);
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count = SLOW_QUICK(intel_get_total_ram_mb() * 9 / 10, 8) ;
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for (int i = 0; i < count/2; i++) {
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uint32_t handle, handle_target;
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char *data;
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int n;
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current_tiling_mode = I915_TILING_X;
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handle = create_bo_and_fill(fd);
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igt_require(gem_get_tiling(fd, handle, &tiling, &swizzle));
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gem_read(fd, handle, 0, linear, sizeof(linear));
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handle_target = create_bo(fd);
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gem_write(fd, handle_target, 0, linear, sizeof(linear));
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/* Check the target bo's contents. */
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data = gem_mmap__gtt(fd, handle_target, sizeof(linear), PROT_READ);
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n = 0;
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for (int pfn = 0; pfn < sizeof(linear)/PAGE_SIZE; pfn++) {
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uint32_t page[PAGE_SIZE/sizeof(uint32_t)];
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copy_wc_page(page, data + PAGE_SIZE*pfn);
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for (int j = 0; j < PAGE_SIZE/sizeof(uint32_t); j++) {
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igt_assert_f(page[j] == n,
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"mismatch at %i: %i\n",
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n, page[j]);
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n++;
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}
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}
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munmap(data, sizeof(linear));
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/* Leak both bos so that we use all of system mem! */
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gem_madvise(fd, handle_target, I915_MADV_DONTNEED);
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gem_madvise(fd, handle, I915_MADV_DONTNEED);
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igt_progress("gem_tiled_pread_pwrite: ", i, count/2);
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}
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close(fd);
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}
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