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igt/gem_pwrite: Test handling of larger than mappable buffers

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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2015-04-26 10:13:49 +01:00
parent dfda0b6aec
commit be6e32b925
1 changed files with 62 additions and 2 deletions
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64
tests/gem_pwrite.c
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@ -39,6 +39,7 @@
#include "drm.h"
#include "ioctl_wrappers.h"
#include "drmtest.h"
#include "igt_aux.h"
#define OBJECT_SIZE 16384
@ -80,6 +81,59 @@ static const char *bytes_per_sec(char *buf, double v)
return buf;
}
static void test_big_cpu(int fd)
{
uint32_t handle;
uint32_t *ptr;
uint64_t offset, size;
size = 3 * gem_aperture_size(fd) / 4;
intel_require_memory(1, size, CHECK_RAM);
igt_require(gem_mmap__has_wc(fd));
handle = gem_create(fd, size);
gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
ptr = gem_mmap__wc(fd, handle, 0, size, PROT_READ);
for (offset = 0; offset < size; offset += 4096) {
int suboffset = (offset >> 12) % (4096 - sizeof(offset));
uint64_t tmp;
gem_write(fd, handle, offset + suboffset , &offset, sizeof(offset));
gem_read(fd, handle, offset + suboffset, &tmp, sizeof(tmp));
igt_assert_eq(offset, tmp);
}
munmap(ptr, size);
gem_close(fd, handle);
}
static void test_big_gtt(int fd)
{
uint64_t offset, size;
uint64_t *ptr;
uint32_t handle;
size = 3 * gem_aperture_size(fd) / 4;
intel_require_memory(1, size, CHECK_RAM);
igt_require(gem_mmap__has_wc(fd));
handle = gem_create(fd, size);
gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
ptr = gem_mmap__wc(fd, handle, 0, size, PROT_READ);
for (offset = 0; offset < size; offset += 4096) {
int suboffset = (offset >> 12) % (4096 / sizeof(offset) - 1) * sizeof(offset);
gem_write(fd, handle, offset + suboffset, &offset, sizeof(offset));
igt_assert_eq(ptr[(offset + suboffset)/sizeof(offset)], offset);
}
munmap(ptr, size);
gem_close(fd, handle);
}
uint32_t *src, dst;
int fd;
@ -153,9 +207,15 @@ int main(int argc, char **argv)
igt_fixture {
free(src);
gem_close(fd, dst);
close(fd);
}
igt_subtest("big-cpu")
test_big_cpu(fd);
igt_subtest("big-gtt")
test_big_gtt(fd);
igt_fixture
close(fd);
igt_exit();
}