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/*
* Copyright © 2015 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:
* Vinay Belgaumkar <vinay.belgaumkar@intel.com>
* Thomas Daniel <thomas.daniel@intel.com>
*
*/
#include "igt.h"
#define EXEC_OBJECT_PINNED (1<<4)
#define EXEC_OBJECT_SUPPORTS_48B_ADDRESS (1<<3)
/* gen8_canonical_addr
* Used to convert any address into canonical form, i.e. [63:48] == [47].
* Based on kernel's sign_extend64 implementation.
* @address - a virtual address
*/
#define GEN8_HIGH_ADDRESS_BIT 47
static uint64_t gen8_canonical_addr(uint64_t address)
{
__u8 shift = 63 - GEN8_HIGH_ADDRESS_BIT;
return (__s64)(address << shift) >> shift;
}
static void test_invalid(int fd)
{
const uint32_t bbe = MI_BATCH_BUFFER_END;
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 object;
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = to_user_pointer(&object);
execbuf.buffer_count = 1;
memset(&object, 0, sizeof(object));
object.handle = gem_create(fd, 2*4096);
object.flags = EXEC_OBJECT_SUPPORTS_48B_ADDRESS | EXEC_OBJECT_PINNED;
gem_write(fd, object.handle, 0, &bbe, sizeof(bbe));
/* Check invalid alignment */
object.offset = 4096;
object.alignment = 64*1024;
igt_assert_eq(__gem_execbuf(fd, &execbuf), -EINVAL);
object.alignment = 0;
/* Check wraparound */
object.offset = -4096ULL;
igt_assert_eq(__gem_execbuf(fd, &execbuf), -EINVAL);
/* Check beyond bounds of aperture */
object.offset = gem_aperture_size(fd) - 4096;
object.offset = gen8_canonical_addr(object.offset);
igt_assert_eq(__gem_execbuf(fd, &execbuf), -EINVAL);
/* Check gen8 canonical addressing */
if (gem_aperture_size(fd) > 1ull<<GEN8_HIGH_ADDRESS_BIT) {
object.offset = 1ull << GEN8_HIGH_ADDRESS_BIT;
igt_assert_eq(__gem_execbuf(fd, &execbuf), -EINVAL);
object.offset = gen8_canonical_addr(object.offset);
igt_assert_eq(__gem_execbuf(fd, &execbuf), 0);
}
/* Check extended range */
if (gem_aperture_size(fd) > 1ull<<32) {
object.flags = EXEC_OBJECT_PINNED;
object.offset = 1ull<<32;
igt_assert_eq(__gem_execbuf(fd, &execbuf), -EINVAL);
object.offset = gen8_canonical_addr(object.offset);
object.flags |= EXEC_OBJECT_SUPPORTS_48B_ADDRESS;
igt_assert_eq(__gem_execbuf(fd, &execbuf), 0);
}
}
static void test_softpin(int fd)
{
const uint32_t size = 1024 * 1024;
const uint32_t bbe = MI_BATCH_BUFFER_END;
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 object;
uint64_t offset, end;
uint32_t last_handle;
int loop;
last_handle = gem_create(fd, size);
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = to_user_pointer(&object);
execbuf.buffer_count = 1;
for (loop = 0; loop < 1024; loop++) {
memset(&object, 0, sizeof(object));
object.handle = gem_create(fd, 2*size);
gem_write(fd, object.handle, 0, &bbe, sizeof(bbe));
/* Find a hole */
gem_execbuf(fd, &execbuf);
gem_close(fd, object.handle);
gem_close(fd, last_handle);
igt_debug("Made a 2 MiB hole: %08llx\n",
object.offset);
object.handle = gem_create(fd, size);
gem_write(fd, object.handle, 0, &bbe, sizeof(bbe));
object.flags |= EXEC_OBJECT_PINNED;
end = object.offset + size;
for (offset = object.offset; offset <= end; offset += 4096) {
object.offset = offset;
gem_execbuf(fd, &execbuf);
igt_assert_eq_u64(object.offset, offset);
}
last_handle = object.handle;
}
}
static void test_overlap(int fd)
{
const uint32_t size = 1024 * 1024;
const uint32_t bbe = MI_BATCH_BUFFER_END;
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 object[2];
uint64_t offset;
uint32_t handle;
handle = gem_create(fd, 3*size);
gem_write(fd, handle, 0, &bbe, sizeof(bbe));
memset(object, 0, sizeof(object));
object[0].handle = handle;
/* Find a hole */
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = to_user_pointer(object);
execbuf.buffer_count = 1;
gem_execbuf(fd, &execbuf);
igt_debug("Made a 3x1 MiB hole: %08llx\n",
object[0].offset);
object[0].handle = gem_create(fd, size);
object[0].offset += size;
object[0].flags |= EXEC_OBJECT_PINNED;
object[1].handle = gem_create(fd, size);
object[1].flags |= EXEC_OBJECT_PINNED;
gem_write(fd, object[1].handle, 0, &bbe, sizeof(bbe));
execbuf.buffer_count = 2;
/* Check that we fit into our hole */
object[1].offset = object[0].offset - size;
gem_execbuf(fd, &execbuf);
igt_assert_eq_u64(object[1].offset + size, object[0].offset);
object[1].offset = object[0].offset + size;
gem_execbuf(fd, &execbuf);
igt_assert_eq_u64(object[1].offset - size, object[0].offset);
/* Try all possible page-aligned overlaps */
for (offset = object[0].offset - size + 4096;
offset < object[0].offset + size;
offset += 4096) {
object[1].offset = offset;
igt_debug("[0]=[%08llx - %08llx] [1]=[%08llx - %08llx]\n",
(long long)object[0].offset,
(long long)object[0].offset + size,
(long long)object[1].offset,
(long long)object[1].offset + size);
igt_assert_eq(__gem_execbuf(fd, &execbuf), -EINVAL);
igt_assert_eq_u64(object[1].offset, offset);
}
gem_close(fd, object[1].handle);
gem_close(fd, object[0].handle);
gem_close(fd, handle);
}
static uint64_t busy_batch(int fd)
{
const int gen = intel_gen(intel_get_drm_devid(fd));
const int has_64bit_reloc = gen >= 8;
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 object[2];
uint32_t *map;
int factor = 10;
int i = 0;
memset(object, 0, sizeof(object));
object[0].handle = gem_create(fd, 1024*1024);
object[1].handle = gem_create(fd, 4096);
map = gem_mmap__cpu(fd, object[1].handle, 0, 4096, PROT_WRITE);
gem_set_domain(fd, object[1].handle,
I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
*map = MI_BATCH_BUFFER_END;
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = to_user_pointer(object);
execbuf.buffer_count = 2;
if (gen >= 6)
execbuf.flags = I915_EXEC_BLT;
gem_execbuf(fd, &execbuf);
igt_debug("Active offsets = [%08llx, %08llx]\n",
object[0].offset, object[1].offset);
#define COPY_BLT_CMD (2<<29|0x53<<22|0x6)
#define BLT_WRITE_ALPHA (1<<21)
#define BLT_WRITE_RGB (1<<20)
gem_set_domain(fd, object[1].handle,
I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
while (factor--) {
/* XY_SRC_COPY */
map[i++] = COPY_BLT_CMD | BLT_WRITE_ALPHA | BLT_WRITE_RGB;
if (has_64bit_reloc)
map[i-1] += 2;
map[i++] = 0xcc << 16 | 1 << 25 | 1 << 24 | (4*1024);
map[i++] = 0;
map[i++] = 256 << 16 | 1024;
map[i++] = object[0].offset;
if (has_64bit_reloc)
map[i++] = object[0].offset >> 32;
map[i++] = 0;
map[i++] = 4096;
map[i++] = object[0].offset;
if (has_64bit_reloc)
map[i++] = object[0].offset >> 32;
}
map[i++] = MI_BATCH_BUFFER_END;
munmap(map, 4096);
object[0].flags = EXEC_OBJECT_PINNED | EXEC_OBJECT_WRITE;
object[1].flags = EXEC_OBJECT_PINNED;
gem_execbuf(fd, &execbuf);
gem_close(fd, object[0].handle);
gem_close(fd, object[1].handle);
return object[1].offset;
}
static void test_evict_active(int fd)
{
const uint32_t bbe = MI_BATCH_BUFFER_END;
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 object;
uint64_t expected;
memset(&object, 0, sizeof(object));
object.handle = gem_create(fd, 4096);
gem_write(fd, object.handle, 0, &bbe, sizeof(bbe));
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = to_user_pointer(&object);
execbuf.buffer_count = 1;
expected = busy_batch(fd);
object.offset = expected;
object.flags = EXEC_OBJECT_PINNED;
/* Replace the active batch with ourselves, forcing an eviction */
gem_execbuf(fd, &execbuf);
igt_assert_eq_u64(object.offset, expected);
gem_close(fd, object.handle);
}
static void test_evict_snoop(int fd)
{
const uint32_t bbe = MI_BATCH_BUFFER_END;
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 object[2];
uint64_t hole;
igt_require(!gem_has_llc(fd));
igt_require(!gem_uses_ppgtt(fd));
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = to_user_pointer(object);
execbuf.buffer_count = 1;
/* Find a hole */
memset(object, 0, sizeof(object));
object[0].handle = gem_create(fd, 3*4096);
gem_write(fd, object[0].handle, 0, &bbe, sizeof(bbe));
gem_execbuf(fd, &execbuf);
gem_close(fd, object[0].handle);
hole = object[0].offset;
/* Create a snoop + uncached pair */
object[0].handle = gem_create(fd, 4096);
object[0].flags = EXEC_OBJECT_PINNED;
gem_set_caching(fd, object[0].handle, 1);
object[1].handle = gem_create(fd, 4096);
object[1].flags = EXEC_OBJECT_PINNED;
gem_write(fd, object[1].handle, 4096-sizeof(bbe), &bbe, sizeof(bbe));
execbuf.buffer_count = 2;
/* snoop abutting before uncached -> error */
object[0].offset = hole;
object[1].offset = hole + 4096;
igt_assert_eq(__gem_execbuf(fd, &execbuf), -EINVAL);
/* snoop abutting after uncached -> error */
object[0].offset = hole + 4096;
object[1].offset = hole;
igt_assert_eq(__gem_execbuf(fd, &execbuf), -EINVAL);
/* with gap -> okay */
object[0].offset = hole + 2*4096;
object[1].offset = hole;
igt_assert_eq(__gem_execbuf(fd, &execbuf), 0);
/* And we should force the snoop away (or the GPU may hang) */
object[0].flags = 0;
object[1].offset = hole + 4096;
igt_assert_eq(__gem_execbuf(fd, &execbuf), 0);
igt_assert(object[0].offset != hole);
igt_assert(object[0].offset != hole + 2*4096);
gem_close(fd, object[0].handle);
gem_close(fd, object[1].handle);
}
static void test_evict_hang(int fd)
{
const uint32_t bbe = MI_BATCH_BUFFER_END;
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 object;
igt_hang_t hang;
uint64_t expected;
memset(&object, 0, sizeof(object));
object.handle = gem_create(fd, 4096);
gem_write(fd, object.handle, 0, &bbe, sizeof(bbe));
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = to_user_pointer(&object);
execbuf.buffer_count = 1;
hang = igt_hang_ctx(fd, 0, 0, 0, (uint64_t *)&expected);
object.offset = expected;
object.flags = EXEC_OBJECT_PINNED;
/* Replace the hung batch with ourselves, forcing an eviction */
gem_execbuf(fd, &execbuf);
igt_assert_eq_u64(object.offset, expected);
igt_post_hang_ring(fd, hang);
gem_close(fd, object.handle);
}
static void xchg_offset(void *array, unsigned i, unsigned j)
{
struct drm_i915_gem_exec_object2 *object = array;
uint64_t tmp = object[i].offset;
object[i].offset = object[j].offset;
object[j].offset = tmp;
}
enum sleep { NOSLEEP, SUSPEND, HIBERNATE };
static void test_noreloc(int fd, enum sleep sleep)
{
const int gen = intel_gen(intel_get_drm_devid(fd));
const uint32_t size = 4096;
const uint32_t bbe = MI_BATCH_BUFFER_END;
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 object[257];
uint64_t offset;
uint32_t handle;
uint32_t *batch, *b;
int i, loop;
handle = gem_create(fd, (ARRAY_SIZE(object)+1)*size);
gem_write(fd, handle, 0, &bbe, sizeof(bbe));
memset(object, 0, sizeof(object));
object[0].handle = handle;
/* Find a hole */
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = to_user_pointer(object);
execbuf.buffer_count = 1;
if (gen < 6)
execbuf.flags |= I915_EXEC_SECURE;
gem_execbuf(fd, &execbuf);
gem_close(fd, object[0].handle);
igt_debug("Made a %dx%d KiB hole: %08llx\n",
(int)ARRAY_SIZE(object), size/1024, object[0].offset);
offset = object[0].offset;
for (i = 0; i < ARRAY_SIZE(object) - 1; i++) {
object[i].handle = gem_create(fd, size);
object[i].offset = offset + i*size;
object[i].flags = EXEC_OBJECT_PINNED | EXEC_OBJECT_WRITE;
}
object[i].handle = gem_create(fd, 2*size);
object[i].offset = offset + i*size;
object[i].flags = EXEC_OBJECT_PINNED;
b = batch = gem_mmap__cpu(fd, object[i].handle, 0, 2*size, PROT_WRITE);
gem_set_domain(fd, object[i].handle,
I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
for (i = 0; i < ARRAY_SIZE(object) - 1; i++) {
*b++ = MI_STORE_DWORD_IMM | (gen < 6 ? 1 << 22 : 0);
if (gen >= 8) {
*b++ = object[i].offset;
*b++ = object[i].offset >> 32;
} else if (gen >= 4) {
*b++ = 0;
*b++ = object[i].offset;
} else {
b[-1]--;
*b++ = object[i].offset;
}
*b++ = i;
}
*b++ = MI_BATCH_BUFFER_END;
igt_assert(b - batch <= 2*size/sizeof(uint32_t));
munmap(batch, size);
execbuf.buffer_count = ARRAY_SIZE(object);
for (loop = 0; loop < 1024; loop++) {
igt_permute_array(object, ARRAY_SIZE(object)-1, xchg_offset);
gem_execbuf(fd, &execbuf);
if ((loop & 127) == 0) {
switch (sleep) {
case NOSLEEP:
break;
case SUSPEND:
igt_system_suspend_autoresume(SUSPEND_STATE_MEM,
SUSPEND_TEST_NONE);
break;
case HIBERNATE:
igt_system_suspend_autoresume(SUSPEND_STATE_DISK,
SUSPEND_TEST_NONE);
break;
}
}
for (i = 0; i < ARRAY_SIZE(object) - 1; i++) {
uint32_t val;
gem_read(fd, object[i].handle, 0, &val, sizeof(val));
igt_assert_eq(val, (object[i].offset - offset)/size);
}
}
for (i = 0; i < ARRAY_SIZE(object); i++)
gem_close(fd, object[i].handle);
}
igt_main
{
int fd = -1;
igt_skip_on_simulation();
igt_fixture {
fd = drm_open_driver_master(DRIVER_INTEL);
igt_require_gem(fd);
igt_require(gem_has_softpin(fd));
igt_require(gem_can_store_dword(fd, 0));
}
igt_subtest("invalid")
test_invalid(fd);
igt_subtest("softpin")
test_softpin(fd);
igt_subtest("overlap")
test_overlap(fd);
igt_subtest("noreloc")
test_noreloc(fd, NOSLEEP);
igt_subtest("noreloc-interruptible")
igt_while_interruptible(true) test_noreloc(fd, NOSLEEP);
igt_subtest("noreloc-S3")
test_noreloc(fd, SUSPEND);
igt_subtest("noreloc-S4")
test_noreloc(fd, HIBERNATE);
for (int signal = 0; signal <= 1; signal++) {
igt_subtest_f("evict-active%s", signal ? "-interruptible" : "")
igt_while_interruptible(signal) test_evict_active(fd);
igt_subtest_f("evict-snoop%s", signal ? "-interruptible" : "")
igt_while_interruptible(signal) test_evict_snoop(fd);
}
igt_subtest("evict-hang")
test_evict_hang(fd);
igt_fixture
close(fd);
}