static int negative_reloc(int fd, unsigned flags)
{
struct drm_i915_gem_execbuffer2 execbuf;
- struct drm_i915_gem_exec_object2 gem_exec;
+ struct drm_i915_gem_exec_object2 gem_exec[2];
struct drm_i915_gem_relocation_entry gem_reloc[1000];
uint64_t gtt_max = gem_aperture_size(fd);
uint32_t buf[1024] = {MI_BATCH_BUFFER_END};
int i;
+#define BIAS (256*1024)
+
igt_require(intel_gen(intel_get_drm_devid(fd)) >= 7);
- memset(&gem_exec, 0, sizeof(gem_exec));
- gem_exec.handle = gem_create(fd, 4096);
- gem_write(fd, gem_exec.handle, 0, buf, 8);
+ memset(gem_exec, 0, sizeof(gem_exec));
+ gem_exec[0].handle = gem_create(fd, 4096);
+ gem_write(fd, gem_exec[0].handle, 0, buf, 8);
+
+ gem_reloc[0].offset = 1024;
+ gem_reloc[0].delta = 0;
+ gem_reloc[0].target_handle = gem_exec[0].handle;
+ gem_reloc[0].read_domains = I915_GEM_DOMAIN_COMMAND;
+
+ gem_exec[1].handle = gem_create(fd, 4096);
+ gem_write(fd, gem_exec[1].handle, 0, buf, 8);
+ gem_exec[1].relocation_count = 1;
+ gem_exec[1].relocs_ptr = (uintptr_t)gem_reloc;
memset(&execbuf, 0, sizeof(execbuf));
- execbuf.buffers_ptr = (uintptr_t)&gem_exec;
- execbuf.buffer_count = 1;
+ execbuf.buffers_ptr = (uintptr_t)gem_exec;
+ execbuf.buffer_count = 2;
execbuf.batch_len = 8;
- execbuf.flags = flags & USE_LUT;
do_or_die(drmIoctl(fd,
DRM_IOCTL_I915_GEM_EXECBUFFER2,
&execbuf));
+ gem_close(fd, gem_exec[1].handle);
- printf("Found offset %ld for 4k batch\n", (long)gem_exec.offset);
- igt_require(gem_exec.offset < 16*1024*1024);
+ printf("Found offset %ld for 4k batch\n", (long)gem_exec[0].offset);
+ igt_require(gem_exec[0].offset < BIAS);
memset(gem_reloc, 0, sizeof(gem_reloc));
for (i = 0; i < sizeof(gem_reloc)/sizeof(gem_reloc[0]); i++) {
gem_reloc[i].offset = 8 + 4*i;
- gem_reloc[i].delta = -16*1024*i;
- gem_reloc[i].target_handle = flags & USE_LUT ? 0 : gem_exec.handle;
+ gem_reloc[i].delta = -BIAS*i/1024;
+ gem_reloc[i].target_handle = flags & USE_LUT ? 0 : gem_exec[0].handle;
gem_reloc[i].read_domains = I915_GEM_DOMAIN_COMMAND;
}
- gem_exec.relocation_count = 1000;
- gem_exec.relocs_ptr = (uintptr_t)gem_reloc;
+ gem_exec[0].relocation_count = sizeof(gem_reloc)/sizeof(gem_reloc[0]);
+ gem_exec[0].relocs_ptr = (uintptr_t)gem_reloc;
+ execbuf.buffer_count = 1;
+ execbuf.flags = flags & USE_LUT;
do_or_die(drmIoctl(fd,
DRM_IOCTL_I915_GEM_EXECBUFFER2,
&execbuf));
- gem_read(fd, gem_exec.handle, 0, buf, sizeof(buf));
- gem_close(fd, gem_exec.handle);
+ printf("Batch is now at offset %ld\n", (long)gem_exec[0].offset);
+
+ gem_read(fd, gem_exec[0].handle, 0, buf, sizeof(buf));
+ gem_close(fd, gem_exec[0].handle);
for (i = 0; i < sizeof(gem_reloc)/sizeof(gem_reloc[0]); i++)
igt_assert(buf[2 + i] < gtt_max);