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-rw-r--r--tests/gem_tiled_pread.c165
1 files changed, 108 insertions, 57 deletions
diff --git a/tests/gem_tiled_pread.c b/tests/gem_tiled_pread.c
index ed7d8582..c3c6ed74 100644
--- a/tests/gem_tiled_pread.c
+++ b/tests/gem_tiled_pread.c
@@ -44,48 +44,108 @@
#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_bufmgr.h"
-#include "intel_batchbuffer.h"
-#include "intel_gpu_tools.h"
-static drm_intel_bufmgr *bufmgr;
-struct intel_batchbuffer *batch;
-static const int width = 512, height = 512;
-static const int size = 1024 * 1024;
+#define WIDTH 512
+#define HEIGHT 512
+static uint32_t linear[WIDTH * HEIGHT];
#define PAGE_SIZE 4096
-static drm_intel_bo *
-create_bo(uint32_t devid)
+static uint32_t
+gem_create(int fd, int size)
{
- drm_intel_bo *bo, *linear_bo;
- uint32_t *linear;
- uint32_t tiling = I915_TILING_X;
- int ret, i;
- int val = 0;
-
- bo = drm_intel_bo_alloc(bufmgr, "tiled bo", size, 4096);
- ret = drm_intel_bo_set_tiling(bo, &tiling, width * 4);
+ 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 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);
- assert(tiling == I915_TILING_X);
- linear_bo = drm_intel_bo_alloc(bufmgr, "linear src", size, 4096);
+}
- /* Fill the BO with dwords starting at start_val */
- drm_intel_bo_map(linear_bo, 1);
- linear = linear_bo->virtual;
+static void
+gem_set_tiling(int fd, uint32_t handle, int tiling)
+{
+ struct drm_i915_gem_set_tiling set_tiling;
+ int ret;
- for (i = 0; i < 1024 * 1024 / 4; i++)
- linear[i] = val++;
- drm_intel_bo_unmap(linear_bo);
+ do {
+ set_tiling.handle = handle;
+ set_tiling.tiling_mode = tiling;
+ set_tiling.stride = WIDTH * sizeof(uint32_t);
- intel_copy_bo(batch, bo, linear_bo, width, height);
+ ret = ioctl(fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling);
+ } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
+}
- drm_intel_bo_unreference(linear_bo);
+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;
- return bo;
+ 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(int fd)
+{
+ uint32_t handle;
+ uint32_t *data;
+ int i;
+
+ handle = gem_create(fd, sizeof(linear));
+ gem_set_tiling(fd, handle, I915_TILING_X);
+
+ /* 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 int
@@ -101,48 +161,40 @@ static uint32_t
calculate_expected(int offset)
{
int tile_off = offset & (PAGE_SIZE - 1);
- int tile_base = offset - tile_off;
+ int tile_base = offset & -PAGE_SIZE;
int tile_index = tile_base / PAGE_SIZE;
- int tiles_per_row = width / (512 / 4); /* X tiled = 512b rows */
+ int tiles_per_row = 4*WIDTH / 512; /* X tiled = 512b rows */
/* base x,y values from the tile (page) index. */
int base_y = tile_index / tiles_per_row * 8;
int base_x = tile_index % tiles_per_row * 128;
- assert((offset % 4) == 0);
/* x, y offsets within the tile */
int tile_y = tile_off / 512;
int tile_x = (tile_off % 512) / 4;
/* printf("%3d, %3d, %3d,%3d\n", base_x, base_y, tile_x, tile_y); */
- return (base_y + tile_y) * width + base_x + tile_x;
+ return (base_y + tile_y) * WIDTH + base_x + tile_x;
}
int
main(int argc, char **argv)
{
int fd;
- uint32_t devid;
- drm_intel_bo *bo;
int i, iter = 100;
- uint32_t buf[width * height];
uint32_t tiling, swizzle;
+ uint32_t handle;
fd = drm_open_any();
- devid = intel_get_drm_devid(fd);
-
- bufmgr = drm_intel_bufmgr_gem_init(fd, 4096);
- drm_intel_bufmgr_gem_enable_reuse(bufmgr);
- batch = intel_batchbuffer_alloc(bufmgr, intel_get_drm_devid(fd));
- bo = create_bo(devid);
-
- drm_intel_bo_get_tiling(bo, &tiling, &swizzle);
+ handle = create_bo(fd);
+ gem_get_tiling(fd, handle, &tiling, &swizzle);
/* Read a bunch of random subsets of the data and check that they come
* out right.
*/
for (i = 0; i < iter; i++) {
+ int size = WIDTH * HEIGHT * 4;
int offset = (random() % size) & ~3;
int len = (random() % size) & ~3;
int j;
@@ -153,15 +205,12 @@ main(int argc, char **argv)
if (offset + len > size)
len = size - offset;
- /* For sanity of reporting, make the first iteration be the
- * whole buffer.
- */
if (i == 0) {
offset = 0;
len = size;
}
- drm_intel_bo_get_subdata(bo, offset, len, buf);
+ gem_read(fd, handle, offset, len, linear);
/* Translate from offsets in the read buffer to the swizzled
* address that it corresponds to. This is the opposite of
@@ -171,30 +220,36 @@ main(int argc, char **argv)
for (j = offset; j < offset + len; j += 4) {
uint32_t expected_val, found_val;
int swizzled_offset;
+ const char *swizzle_str;
switch (swizzle) {
case I915_BIT_6_SWIZZLE_NONE:
swizzled_offset = j;
+ swizzle_str = "none";
break;
case I915_BIT_6_SWIZZLE_9:
swizzled_offset = j ^
swizzle_bit(9, j);
+ swizzle_str = "bit9";
break;
case I915_BIT_6_SWIZZLE_9_10:
swizzled_offset = j ^
swizzle_bit(9, j) ^
swizzle_bit(10, j);
+ swizzle_str = "bit9^10";
break;
case I915_BIT_6_SWIZZLE_9_11:
swizzled_offset = j ^
swizzle_bit(9, j) ^
swizzle_bit(11, j);
+ swizzle_str = "bit9^11";
break;
case I915_BIT_6_SWIZZLE_9_10_11:
swizzled_offset = j ^
swizzle_bit(9, j) ^
swizzle_bit(10, j) ^
swizzle_bit(11, j);
+ swizzle_str = "bit9^10^11";
break;
default:
fprintf(stderr, "Bad swizzle bits; %d\n",
@@ -202,23 +257,19 @@ main(int argc, char **argv)
abort();
}
expected_val = calculate_expected(swizzled_offset);
- found_val = buf[(j - offset) / 4];
+ found_val = linear[(j - offset) / 4];
if (expected_val != found_val) {
fprintf(stderr,
- "Bad read: %d instead of %d at 0x%08x "
- "for read from 0x%08x to 0x%08x\n",
- found_val, expected_val, j,
- offset, offset + len);
+ "Bad read [%d]: %d instead of %d at 0x%08x "
+ "for read from 0x%08x to 0x%08x, swizzle=%s\n",
+ i, found_val, expected_val, j,
+ offset, offset + len,
+ swizzle_str);
abort();
}
}
}
- drm_intel_bo_unreference(bo);
-
- intel_batchbuffer_free(batch);
- drm_intel_bufmgr_destroy(bufmgr);
-
close(fd);
return 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-19 19:32:04 +0000