You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
150 lines
4.2 KiB
150 lines
4.2 KiB
/*
|
|
* Copyright © 2011 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:
|
|
* Daniel Vetter <daniel.vetter@ffwll.ch>
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Testcase: Test the CS prefetch behaviour on batches
|
|
*
|
|
* Historically the batch prefetcher doesn't check whether it's crossing page
|
|
* boundaries and likes to throw up when it gets a pagefault in return for his
|
|
* over-eager behaviour. Check for this.
|
|
*
|
|
* This test for a bug where we've failed to plug a scratch pte entry into the
|
|
* very last gtt pte.
|
|
*/
|
|
#include "igt.h"
|
|
|
|
IGT_TEST_DESCRIPTION("Test the CS prefetch behaviour on batches.");
|
|
|
|
#define BATCH_SIZE 4096
|
|
|
|
struct shadow {
|
|
uint32_t handle;
|
|
struct drm_i915_gem_relocation_entry reloc;
|
|
};
|
|
|
|
static void setup(int fd, int gen, struct shadow *shadow)
|
|
{
|
|
uint32_t buf[16];
|
|
int i;
|
|
|
|
shadow->handle = gem_create(fd, 4096);
|
|
|
|
i = 0;
|
|
buf[i++] = MI_STORE_DWORD_IMM | (gen < 6 ? 1 << 22 : 0);
|
|
if (gen >= 8) {
|
|
buf[i++] = BATCH_SIZE - sizeof(uint32_t);
|
|
buf[i++] = 0;
|
|
} else if (gen >= 4) {
|
|
buf[i++] = 0;
|
|
buf[i++] = BATCH_SIZE - sizeof(uint32_t);
|
|
} else {
|
|
buf[i-1]--;
|
|
buf[i++] = BATCH_SIZE - sizeof(uint32_t);
|
|
}
|
|
buf[i++] = MI_BATCH_BUFFER_END;
|
|
buf[i++] = MI_BATCH_BUFFER_END;
|
|
gem_write(fd, shadow->handle, 0, buf, sizeof(buf));
|
|
|
|
memset(&shadow->reloc, 0, sizeof(shadow->reloc));
|
|
if (gen >= 8 || gen < 4)
|
|
shadow->reloc.offset = sizeof(uint32_t);
|
|
else
|
|
shadow->reloc.offset = 2*sizeof(uint32_t);
|
|
shadow->reloc.delta = BATCH_SIZE - sizeof(uint32_t);
|
|
shadow->reloc.read_domains = I915_GEM_DOMAIN_INSTRUCTION;
|
|
shadow->reloc.write_domain = I915_GEM_DOMAIN_INSTRUCTION;
|
|
}
|
|
|
|
static void can_test_ring(unsigned ring)
|
|
{
|
|
int master = drm_open_driver_master(DRIVER_INTEL);
|
|
int fd = drm_open_driver(DRIVER_INTEL);
|
|
|
|
/* Dance to avoid dying with master open */
|
|
close(master);
|
|
igt_require_gem(fd);
|
|
gem_require_ring(fd, ring);
|
|
igt_require(gem_can_store_dword(fd, ring));
|
|
close(fd);
|
|
}
|
|
|
|
static void test_ring(unsigned ring)
|
|
{
|
|
struct drm_i915_gem_execbuffer2 execbuf;
|
|
struct drm_i915_gem_exec_object2 obj[2];
|
|
struct shadow shadow;
|
|
uint64_t i, count;
|
|
int fd, gen;
|
|
|
|
can_test_ring(ring);
|
|
|
|
fd = drm_open_driver_master(DRIVER_INTEL);
|
|
gen = intel_gen(intel_get_drm_devid(fd));
|
|
setup(fd, gen, &shadow);
|
|
|
|
count = gem_aperture_size(fd) / BATCH_SIZE;
|
|
intel_require_memory(count, BATCH_SIZE, CHECK_RAM);
|
|
/* Fill the entire gart with batches and run them. */
|
|
memset(obj, 0, sizeof(obj));
|
|
obj[1].handle = shadow.handle;
|
|
obj[1].relocs_ptr = to_user_pointer(&shadow.reloc);
|
|
obj[1].relocation_count = 1;
|
|
|
|
memset(&execbuf, 0, sizeof(execbuf));
|
|
execbuf.buffers_ptr = to_user_pointer(obj);
|
|
execbuf.flags = ring;
|
|
if (gen < 6)
|
|
execbuf.flags |= I915_EXEC_SECURE;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
/* Create the new batch using the GPU */
|
|
obj[0].handle = gem_create(fd, BATCH_SIZE);
|
|
shadow.reloc.target_handle = obj[0].handle;
|
|
execbuf.buffer_count = 2;
|
|
gem_execbuf(fd, &execbuf);
|
|
|
|
/* ...then execute the new batch */
|
|
execbuf.buffer_count = 1;
|
|
gem_execbuf(fd, &execbuf);
|
|
|
|
/* ...and leak the handle to consume the GTT */
|
|
}
|
|
|
|
close(fd);
|
|
}
|
|
|
|
igt_main
|
|
{
|
|
const struct intel_execution_engine *e;
|
|
|
|
igt_skip_on_simulation();
|
|
|
|
for (e = intel_execution_engines; e->name; e++)
|
|
igt_subtest_f("%s", e->name)
|
|
test_ring(e->exec_id | e->flags);
|
|
}
|