summaryrefslogtreecommitdiff
path: root/tests/gem_tiled_pread_pwrite.c
diff options
context:
space:
mode:
authorDaniel Vetter <daniel.vetter@ffwll.ch>2011-12-02 10:55:56 +0100
committerDaniel Vetter <daniel.vetter@ffwll.ch>2011-12-02 10:55:56 +0100
commit783f16e328f331f92ef37b986b0f845c4ae23d98 (patch)
tree23c7ae846ab685a6bdac4dff04909577adbc6215 /tests/gem_tiled_pread_pwrite.c
parenteafdf50044f53e4b5eef222f6374c9ddba21e9da (diff)
tests: add gem_tiled_pread_pwrite
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'tests/gem_tiled_pread_pwrite.c')
-rw-r--r--tests/gem_tiled_pread_pwrite.c230
1 files changed, 230 insertions, 0 deletions
diff --git a/tests/gem_tiled_pread_pwrite.c b/tests/gem_tiled_pread_pwrite.c
new file mode 100644
index 00000000..52b33579
--- /dev/null
+++ b/tests/gem_tiled_pread_pwrite.c
@@ -0,0 +1,230 @@
+/*
+ * 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:
+ * Eric Anholt <eric@anholt.net>
+ *
+ */
+
+/** @file gem_tiled_pread_pwrite.c
+ *
+ * This is a test of pread's behavior on tiled objects with respect to the
+ * reported swizzling value.
+ *
+ * The goal is to exercise the slow_bit17_copy path for reading on bit17
+ * machines, but will also be useful for catching swizzling value bugs on
+ * other systems.
+ */
+
+/*
+ * Testcase: Test swizzling by testing pwrite does the invers of pread
+ *
+ * Together with the explicit pread testcase, this should cover our swizzle
+ * handling.
+ *
+ * Note that this test will use swap in an effort to test all of ram.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include "drm.h"
+#include "i915_drm.h"
+#include "drmtest.h"
+#include "intel_gpu_tools.h"
+
+#define WIDTH 512
+#define HEIGHT 512
+static uint32_t linear[WIDTH * HEIGHT];
+static uint32_t current_tiling_mode;
+
+#define PAGE_SIZE 4096
+
+static uint32_t
+gem_create(int fd, int size)
+{
+ struct drm_i915_gem_create create;
+
+ create.handle = 0;
+ create.size = size;
+ (void)drmIoctl(fd, DRM_IOCTL_I915_GEM_CREATE, &create);
+
+ return create.handle;
+}
+
+static void *gem_mmap(int fd, uint32_t handle, int size, int prot)
+{
+ struct drm_i915_gem_mmap_gtt mmap_arg;
+ void *ptr;
+
+ mmap_arg.handle = handle;
+ if (drmIoctl(fd, DRM_IOCTL_I915_GEM_MMAP_GTT, &mmap_arg))
+ return NULL;
+
+ ptr = mmap(0, size, prot, MAP_SHARED, fd, mmap_arg.offset);
+ if (ptr == MAP_FAILED)
+ ptr = NULL;
+
+ return ptr;
+}
+
+static int gem_write(int fd,
+ uint32_t handle, uint32_t offset,
+ const void *src, int length)
+{
+ struct drm_i915_gem_pwrite pwrite;
+
+ pwrite.handle = handle;
+ pwrite.offset = offset;
+ pwrite.size = length;
+ pwrite.data_ptr = (uintptr_t)src;
+ return drmIoctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &pwrite);
+}
+
+static void
+gem_read(int fd, uint32_t handle, int offset, int length, void *buf)
+{
+ struct drm_i915_gem_pread pread;
+ int ret;
+
+ pread.handle = handle;
+ pread.offset = offset;
+ pread.size = length;
+ pread.data_ptr = (uintptr_t)buf;
+ ret = drmIoctl(fd, DRM_IOCTL_I915_GEM_PREAD, &pread);
+ assert(ret == 0);
+}
+
+static void
+gem_set_tiling(int fd, uint32_t handle, int tiling)
+{
+ struct drm_i915_gem_set_tiling set_tiling;
+ int ret;
+
+ do {
+ set_tiling.handle = handle;
+ set_tiling.tiling_mode = tiling;
+ set_tiling.stride = WIDTH * sizeof(uint32_t);
+
+ ret = ioctl(fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling);
+ } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
+}
+
+static void
+gem_get_tiling(int fd, uint32_t handle, uint32_t *tiling, uint32_t *swizzle)
+{
+ struct drm_i915_gem_get_tiling get_tiling;
+ int ret;
+
+ memset(&get_tiling, 0, sizeof(get_tiling));
+ get_tiling.handle = handle;
+
+ ret = drmIoctl(fd, DRM_IOCTL_I915_GEM_GET_TILING, &get_tiling);
+ assert(ret == 0);
+
+ *tiling = get_tiling.tiling_mode;
+ *swizzle = get_tiling.swizzle_mode;
+}
+
+static uint32_t
+create_bo_and_fill(int fd)
+{
+ uint32_t handle;
+ uint32_t *data;
+ int i;
+
+ handle = gem_create(fd, sizeof(linear));
+ gem_set_tiling(fd, handle, current_tiling_mode);
+
+ /* Fill the BO with dwords starting at start_val */
+ data = gem_mmap(fd, handle, sizeof(linear), PROT_READ | PROT_WRITE);
+ for (i = 0; i < WIDTH*HEIGHT; i++)
+ data[i] = i;
+ munmap(data, sizeof(linear));
+
+ return handle;
+}
+
+static uint32_t
+create_bo(int fd)
+{
+ uint32_t handle;
+
+ handle = gem_create(fd, sizeof(linear));
+ gem_set_tiling(fd, handle, current_tiling_mode);
+
+ return handle;
+}
+
+int
+main(int argc, char **argv)
+{
+ int fd;
+ uint32_t *data;
+ int i, j;
+ uint32_t tiling, swizzle;
+ uint32_t handle, handle_target;
+ uint32_t devid;
+ int count;
+
+
+ fd = drm_open_any();
+ count = intel_get_total_ram_mb() * 9 / 10;
+
+ devid = intel_get_drm_devid(fd);
+
+ for (i = 0; i < count/2; i++) {
+ current_tiling_mode = I915_TILING_X;
+
+ handle = create_bo_and_fill(fd);
+ gem_get_tiling(fd, handle, &tiling, &swizzle);
+
+ gem_read(fd, handle, 0, sizeof(linear), linear);
+
+ handle_target = create_bo(fd);
+ gem_write(fd, handle_target, 0, linear, sizeof(linear));
+
+ /* Check the target bo's contents. */
+ data = gem_mmap(fd, handle_target, sizeof(linear), PROT_READ | PROT_WRITE);
+ for (j = 0; j < WIDTH*HEIGHT; j++)
+ if (data[j] != j) {
+ fprintf(stderr, "mismatch at %i: %i\n",
+ j, data[j]);
+ exit(1);
+ }
+ munmap(data, sizeof(linear));
+
+ /* Leak both bos so that we use all of system mem! */
+ }
+
+ close(fd);
+
+ return 0;
+}