mirror of
https://github.com/tiagovignatti/intel-gpu-tools.git
synced 2025-06-20 22:36:24 +00:00
igt/gem_mmap_gtt: Check GTT mmapping of large tiled objects
Move function CPU mmap test of large bo to gem_mmap, and include a page-by-page copy between two huge objects (as we have had many bugs triggering pagefault-of-doom for full apertures before). Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson
parent
cf9f48e704
commit
be955173d0
@ -36,12 +36,69 @@
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#include <sys/ioctl.h>
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#include "drm.h"
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#include "ioctl_wrappers.h"
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#include "igt_aux.h"
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#include "drmtest.h"
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#define OBJECT_SIZE 16384
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#define PAGE_SIZE 4096
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int fd;
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int handle;
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static void
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test_huge_bo(int huge, int tiling)
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{
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uint64_t huge_object_size, last_offset;
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char *ptr_cpu;
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char *cpu_pattern;
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uint32_t bo;
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int i;
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switch (huge) {
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case -1:
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huge_object_size = gem_mappable_aperture_size() / 2;
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break;
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case 0:
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huge_object_size = gem_mappable_aperture_size() + PAGE_SIZE;
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break;
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default:
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huge_object_size = gem_aperture_size(fd) + PAGE_SIZE;
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break;
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}
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intel_require_memory(1, huge_object_size, CHECK_RAM);
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last_offset = huge_object_size - PAGE_SIZE;
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cpu_pattern = malloc(PAGE_SIZE);
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igt_assert(cpu_pattern);
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for (i = 0; i < PAGE_SIZE; i++)
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cpu_pattern[i] = i;
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bo = gem_create(fd, huge_object_size);
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/* Obtain CPU mapping for the object. */
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ptr_cpu = gem_mmap__cpu(fd, bo, 0, huge_object_size,
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PROT_READ | PROT_WRITE);
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igt_assert(ptr_cpu);
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gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
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gem_close(fd, bo);
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/* Write first page through the mapping and assert reading it back
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* works. */
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memcpy(ptr_cpu, cpu_pattern, PAGE_SIZE);
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igt_assert(memcmp(ptr_cpu, cpu_pattern, PAGE_SIZE) == 0);
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/* Write last page through the mapping and assert reading it back
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* works. */
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memcpy(ptr_cpu + last_offset, cpu_pattern, PAGE_SIZE);
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igt_assert(memcmp(ptr_cpu + last_offset, cpu_pattern, PAGE_SIZE) == 0);
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/* Cross check that accessing two simultaneous pages works. */
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igt_assert(memcmp(ptr_cpu, ptr_cpu + last_offset, PAGE_SIZE) == 0);
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munmap(ptr_cpu, huge_object_size);
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free(cpu_pattern);
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}
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igt_main
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{
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struct drm_i915_gem_mmap arg;
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@ -99,6 +156,13 @@ igt_main
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gem_close(fd, handle);
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}
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igt_subtest("small-bo")
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test_huge_bo(fd, -1);
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igt_subtest("big-bo")
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test_huge_bo(fd, 0);
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igt_subtest("huge-bo")
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test_huge_bo(fd, 1);
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igt_fixture
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close(fd);
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}
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@ -40,6 +40,7 @@
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#include "ioctl_wrappers.h"
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#include "drmtest.h"
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#include "igt_debugfs.h"
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#include "igt_aux.h"
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#ifndef PAGE_SIZE
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#define PAGE_SIZE 4096
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@ -53,26 +54,6 @@ set_domain_gtt(int fd, uint32_t handle)
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gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
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}
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static void
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set_domain_cpu(int fd, uint32_t handle)
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{
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gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
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}
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static void
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pread_bo(int fd, int handle, void *buf, int offset, int size)
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{
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struct drm_i915_gem_pread gem_pread;
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memset(&gem_pread, 0, sizeof(gem_pread));
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gem_pread.handle = handle;
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gem_pread.data_ptr = (uintptr_t)buf;
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gem_pread.size = size;
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gem_pread.offset = offset;
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igt_assert(ioctl(fd, DRM_IOCTL_I915_GEM_PREAD, &gem_pread) == 0);
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}
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static void *
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mmap_bo(int fd, uint32_t handle)
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{
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@ -284,89 +265,153 @@ test_write_gtt(int fd)
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}
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static void
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test_huge_bo(int fd)
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test_huge_bo(int fd, int huge, int tiling)
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{
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uint32_t bo;
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char *ptr_cpu;
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char *ptr_gtt;
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char *cpu_pattern;
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char *gtt_pattern;
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uint64_t mappable_aperture_pages = gem_mappable_aperture_size() /
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PAGE_SIZE;
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uint64_t huge_object_size = (mappable_aperture_pages + 1) * PAGE_SIZE;
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uint64_t last_offset = huge_object_size - PAGE_SIZE;
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char *ptr;
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char *tiled_pattern;
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char *linear_pattern;
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uint64_t size, last_offset;
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int pitch = tiling == I915_TILING_Y ? 128 : 512;
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int i;
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cpu_pattern = malloc(PAGE_SIZE);
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gtt_pattern = malloc(PAGE_SIZE);
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igt_assert(cpu_pattern && gtt_pattern);
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memset(cpu_pattern, 0xaa, PAGE_SIZE);
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memset(gtt_pattern, ~0xaa, PAGE_SIZE);
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switch (huge) {
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case -1:
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size = gem_mappable_aperture_size() / 2;
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break;
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case 0:
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size = gem_mappable_aperture_size() + PAGE_SIZE;
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break;
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default:
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size = gem_aperture_size(fd) + PAGE_SIZE;
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break;
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}
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intel_require_memory(1, size, CHECK_RAM);
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bo = gem_create(fd, huge_object_size);
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last_offset = size - PAGE_SIZE;
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/* Obtain CPU mapping for the object. */
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ptr_cpu = gem_mmap__cpu(fd, bo, 0, huge_object_size,
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/* Create pattern */
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bo = gem_create(fd, PAGE_SIZE);
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if (tiling)
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gem_set_tiling(fd, bo, tiling, pitch);
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linear_pattern = gem_mmap__gtt(fd, bo, PAGE_SIZE,
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PROT_READ | PROT_WRITE);
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igt_assert(ptr_cpu);
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igt_assert(linear_pattern);
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for (i = 0; i < PAGE_SIZE; i++)
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linear_pattern[i] = i;
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tiled_pattern = gem_mmap__cpu(fd, bo, 0, PAGE_SIZE, PROT_READ);
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igt_assert(tiled_pattern);
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set_domain_cpu(fd, bo);
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gem_set_domain(fd, bo, I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT, 0);
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gem_close(fd, bo);
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/* Write first page through the mapping and assert reading it back
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* works. */
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memcpy(ptr_cpu, cpu_pattern, PAGE_SIZE);
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igt_assert(memcmp(ptr_cpu, cpu_pattern, PAGE_SIZE) == 0);
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bo = gem_create(fd, size);
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if (tiling)
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gem_set_tiling(fd, bo, tiling, pitch);
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/* Write last page through the mapping and assert reading it back
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* works. */
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memcpy(ptr_cpu + last_offset, cpu_pattern, PAGE_SIZE);
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igt_assert(memcmp(ptr_cpu + last_offset, cpu_pattern, PAGE_SIZE) == 0);
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/* Cross check that accessing two simultaneous pages works. */
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igt_assert(memcmp(ptr_cpu, ptr_cpu + last_offset, PAGE_SIZE) == 0);
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munmap(ptr_cpu, huge_object_size);
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ptr_cpu = NULL;
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/* Initialise first/last page through CPU mmap */
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ptr = gem_mmap__cpu(fd, bo, 0, size, PROT_READ | PROT_WRITE);
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memcpy(ptr, tiled_pattern, PAGE_SIZE);
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memcpy(ptr + last_offset, tiled_pattern, PAGE_SIZE);
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munmap(ptr, size);
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/* Obtain mapping for the object through GTT. */
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ptr_gtt = gem_mmap__gtt(fd, bo, huge_object_size,
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PROT_READ | PROT_WRITE);
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igt_require_f(ptr_gtt, "Huge BO GTT mapping not supported.\n");
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ptr = gem_mmap__gtt(fd, bo, size, PROT_READ | PROT_WRITE);
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igt_require_f(ptr, "Huge BO GTT mapping not supported.\n");
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set_domain_gtt(fd, bo);
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/* Access through GTT should still provide the CPU written values. */
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igt_assert(memcmp(ptr_gtt , cpu_pattern, PAGE_SIZE) == 0);
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igt_assert(memcmp(ptr_gtt + last_offset, cpu_pattern, PAGE_SIZE) == 0);
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igt_assert(memcmp(ptr , linear_pattern, PAGE_SIZE) == 0);
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igt_assert(memcmp(ptr + last_offset, linear_pattern, PAGE_SIZE) == 0);
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/* Try replacing first page through GTT mapping and make sure other page
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* stays intact. */
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memcpy(ptr_gtt, gtt_pattern, PAGE_SIZE);
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igt_assert(memcmp(ptr_gtt , gtt_pattern, PAGE_SIZE) == 0);
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igt_assert(memcmp(ptr_gtt + last_offset, cpu_pattern, PAGE_SIZE) == 0);
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gem_set_tiling(fd, bo, I915_TILING_NONE, 0);
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/* And make sure that after writing, both pages contain what they
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* should.*/
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memcpy(ptr_gtt + last_offset, gtt_pattern, PAGE_SIZE);
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igt_assert(memcmp(ptr_gtt , gtt_pattern, PAGE_SIZE) == 0);
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igt_assert(memcmp(ptr_gtt + last_offset, gtt_pattern, PAGE_SIZE) == 0);
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igt_assert(memcmp(ptr , tiled_pattern, PAGE_SIZE) == 0);
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igt_assert(memcmp(ptr + last_offset, tiled_pattern, PAGE_SIZE) == 0);
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munmap(ptr_gtt, huge_object_size);
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ptr_gtt = NULL;
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/* Verify the page contents after GTT writes by reading without mapping.
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* Mapping to CPU domain is avoided not to cause a huge flush.
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*/
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pread_bo(fd, bo, cpu_pattern, 0, PAGE_SIZE);
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igt_assert(memcmp(cpu_pattern, gtt_pattern, PAGE_SIZE) == 0);
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memset(cpu_pattern, 0x00, PAGE_SIZE);
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pread_bo(fd, bo, cpu_pattern, last_offset, PAGE_SIZE);
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igt_assert(memcmp(cpu_pattern, gtt_pattern, PAGE_SIZE) == 0);
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munmap(ptr, size);
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gem_close(fd, bo);
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free(cpu_pattern);
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free(gtt_pattern);
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munmap(tiled_pattern, PAGE_SIZE);
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munmap(linear_pattern, PAGE_SIZE);
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}
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static void
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test_huge_copy(int fd, int huge, int tiling_a, int tiling_b)
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{
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uint64_t huge_object_size, i;
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uint32_t bo, *pattern_a, *pattern_b;
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char *a, *b;
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switch (huge) {
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case -1:
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huge_object_size = gem_mappable_aperture_size() / 4;
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break;
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case 0:
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huge_object_size = gem_mappable_aperture_size() + PAGE_SIZE;
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break;
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default:
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huge_object_size = gem_aperture_size(fd) + PAGE_SIZE;
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break;
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}
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intel_require_memory(2, huge_object_size, CHECK_RAM);
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pattern_a = malloc(PAGE_SIZE);
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for (i = 0; i < PAGE_SIZE/4; i++)
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pattern_a[i] = i;
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pattern_b = malloc(PAGE_SIZE);
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for (i = 0; i < PAGE_SIZE/4; i++)
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pattern_b[i] = ~i;
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bo = gem_create(fd, huge_object_size);
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if (tiling_a)
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gem_set_tiling(fd, bo, tiling_a,
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tiling_a == I915_TILING_Y ? 128 : 512);
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a = gem_mmap__gtt(fd, bo, huge_object_size, PROT_READ | PROT_WRITE);
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igt_require(a);
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gem_close(fd, bo);
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for (i = 0; i < huge_object_size / PAGE_SIZE; i++)
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memcpy(a + PAGE_SIZE*i, pattern_a, PAGE_SIZE);
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bo = gem_create(fd, huge_object_size);
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if (tiling_b)
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gem_set_tiling(fd, bo, tiling_b,
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tiling_b == I915_TILING_Y ? 128 : 512);
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b = gem_mmap__gtt(fd, bo, huge_object_size, PROT_READ | PROT_WRITE);
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igt_require(b);
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gem_close(fd, bo);
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for (i = 0; i < huge_object_size / PAGE_SIZE; i++)
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memcpy(b + PAGE_SIZE*i, pattern_b, PAGE_SIZE);
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for (i = 0; i < huge_object_size / PAGE_SIZE; i++) {
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if (i & 1)
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memcpy(a + i *PAGE_SIZE, b + i*PAGE_SIZE, PAGE_SIZE);
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else
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memcpy(b + i *PAGE_SIZE, a + i*PAGE_SIZE, PAGE_SIZE);
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}
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for (i = 0; i < huge_object_size / PAGE_SIZE; i++) {
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if (i & 1)
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igt_assert(memcmp(pattern_b, a + PAGE_SIZE*i, PAGE_SIZE) == 0);
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else
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igt_assert(memcmp(pattern_a, a + PAGE_SIZE*i, PAGE_SIZE) == 0);
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}
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munmap(a, huge_object_size);
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for (i = 0; i < huge_object_size / PAGE_SIZE; i++) {
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if (i & 1)
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igt_assert(memcmp(pattern_b, b + PAGE_SIZE*i, PAGE_SIZE) == 0);
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else
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igt_assert(memcmp(pattern_a, b + PAGE_SIZE*i, PAGE_SIZE) == 0);
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}
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munmap(b, huge_object_size);
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free(pattern_a);
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free(pattern_b);
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}
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static void
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@ -507,8 +552,40 @@ igt_main
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run_without_prefault(fd, test_write_gtt);
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igt_subtest("write-cpu-read-gtt")
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test_write_cpu_read_gtt(fd);
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igt_subtest("small-bo")
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test_huge_bo(fd, -1, I915_TILING_NONE);
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igt_subtest("small-bo-tiledX")
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test_huge_bo(fd, -1, I915_TILING_X);
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igt_subtest("small-bo-tiledY")
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test_huge_bo(fd, -1, I915_TILING_Y);
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igt_subtest("big-bo")
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test_huge_bo(fd, 0, I915_TILING_NONE);
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igt_subtest("big-bo-tiledX")
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test_huge_bo(fd, 0, I915_TILING_X);
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igt_subtest("big-bo-tiledY")
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test_huge_bo(fd, 0, I915_TILING_Y);
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igt_subtest("huge-bo")
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test_huge_bo(fd);
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test_huge_bo(fd, 1, I915_TILING_NONE);
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igt_subtest("huge-bo-tiledX")
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test_huge_bo(fd, 1, I915_TILING_X);
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igt_subtest("huge-bo-tiledY")
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test_huge_bo(fd, 1, I915_TILING_Y);
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igt_subtest("small-copy")
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test_huge_copy(fd, -1, I915_TILING_NONE, I915_TILING_NONE);
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igt_subtest("small-copy-XY")
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test_huge_copy(fd, -1, I915_TILING_X, I915_TILING_Y);
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igt_subtest("big-copy")
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test_huge_copy(fd, 0, I915_TILING_NONE, I915_TILING_NONE);
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igt_subtest("big-copy-XY")
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test_huge_copy(fd, 0, I915_TILING_X, I915_TILING_Y);
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igt_subtest("huge-copy")
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test_huge_copy(fd, 1, I915_TILING_NONE, I915_TILING_NONE);
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igt_subtest("huge-copy-XY")
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test_huge_copy(fd, 1, I915_TILING_X, I915_TILING_Y);
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igt_fixture
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close(fd);
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