Quoting Mika Kuoppala (2019-11-13 15:49:11)
> From: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
>
> For testing blitter engine command parser on gen9.
>
> v2: bad jump offset
> v3: rebase
> v4: improve bb start and subcase it
> v5: fix presumed offsets (Jon)
>
> Signed-off-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
> ---
> tests/Makefile.sources | 3 +
> tests/i915/gem_blt_parse.c | 997 ++++++++++++++++++++++++++
I was thinking gem_exec_parse_blt.c so the relationship with the
previous gem_exec_parse is clearer (both that this cmdparser, and that
this is a subset of the execbuf ABI).
> tests/intel-ci/fast-feedback.testlist | 1 +
> tests/meson.build | 1 +
> 4 files changed, 1002 insertions(+)
> create mode 100644 tests/i915/gem_blt_parse.c
>
> diff --git a/tests/Makefile.sources b/tests/Makefile.sources
> index abf1e2fc..75c79edb 100644
> --- a/tests/Makefile.sources
> +++ b/tests/Makefile.sources
> @@ -244,6 +244,9 @@ gem_exec_params_SOURCES = i915/gem_exec_params.c
> TESTS_progs += gem_exec_parse
> gem_exec_parse_SOURCES = i915/gem_exec_parse.c
>
> +TESTS_progs += gem_blt_parse
> +gem_blt_parse_SOURCES = i915/gem_blt_parse.c
> +
> TESTS_progs += gem_exec_reloc
> gem_exec_reloc_SOURCES = i915/gem_exec_reloc.c
>
> diff --git a/tests/i915/gem_blt_parse.c b/tests/i915/gem_blt_parse.c
> new file mode 100644
> index 00000000..607afba9
> --- /dev/null
> +++ b/tests/i915/gem_blt_parse.c
> @@ -0,0 +1,997 @@
> +/*
> + * Copyright © 2018 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.
> + *
> + */
> +
> +#include "igt.h"
> +#include <stdlib.h>
> +#include <stdint.h>
> +#include <stdio.h>
> +#include <errno.h>
> +
> +#include <drm.h>
> +
> +#ifndef I915_PARAM_CMD_PARSER_VERSION
> +#define I915_PARAM_CMD_PARSER_VERSION 28
> +#endif
> +
> +#ifndef I915_PARAM_HAS_SECURE_BATCHES
> +#define I915_PARAM_HAS_SECURE_BATCHES 23
> +#endif
Now pulled in from uapi/i915_drm.h
> +
> +/* To help craft commands known to be invalid across all engines */
> +#define INSTR_CLIENT_SHIFT 29
> +#define INSTR_INVALID_CLIENT 0x7
> +
> +#define MI_LOAD_REGISTER_REG (0x2a << 23)
> +#define MI_STORE_REGISTER_MEM (0x24 << 23)
> +#define MI_ARB_ON_OFF (0x8 << 23)
> +#define MI_USER_INTERRUPT (0x02 << 23)
> +#define MI_FLUSH_DW (0x26 << 23)
> +#define MI_ARB_CHECK (0x05 << 23)
> +#define MI_REPORT_HEAD (0x07 << 23)
> +#define MI_SUSPEND_FLUSH (0x0b << 23)
> +#define MI_LOAD_SCAN_LINES_EXCL (0x13 << 23)
> +#define MI_UPDATE_GTT (0x23 << 23)
> +
> +#define BCS_SWCTRL 0x22200
> +#define BCS_GPR_BASE 0x22600
> +#define BCS_GPR(n) (0x22600 + (n) * 8)
> +#define BCS_GPR_UDW(n) (0x22600 + (n) * 8 + 4)
> +
> +#define HANDLE_SIZE 4096
> +
> +static int parser_version;
> +
> +static int command_parser_version(int fd)
> +{
> + int version = -1;
> + drm_i915_getparam_t gp;
> +
> + gp.param = I915_PARAM_CMD_PARSER_VERSION;
> + gp.value = &version;
> +
> + if (drmIoctl(fd, DRM_IOCTL_I915_GETPARAM, &gp) == 0)
> + return version;
> +
> + return -1;
> +}
> +
> +static int __exec_batch_patched(int fd, int engine,
> + uint32_t cmd_bo, const uint32_t *cmds, int size,
> + uint32_t target_bo, uint64_t target_offset, uint64_t target_delta)
> +{
> + struct drm_i915_gem_execbuffer2 execbuf;
> + struct drm_i915_gem_exec_object2 obj[2];
> + struct drm_i915_gem_relocation_entry reloc[1];
> +
> + gem_write(fd, cmd_bo, 0, cmds, size);
> +
> + memset(obj, 0, sizeof(obj));
> + obj[0].handle = target_bo;
> + obj[1].handle = cmd_bo;
> +
> + memset(reloc, 0, sizeof(reloc));
> + reloc[0].offset = target_offset;
> + reloc[0].target_handle = target_bo;
> + reloc[0].delta = target_delta;
> + reloc[0].read_domains = I915_GEM_DOMAIN_COMMAND;
> + reloc[0].write_domain = I915_GEM_DOMAIN_COMMAND;
> + reloc[0].presumed_offset = -1;
> +
> + obj[1].relocs_ptr = to_user_pointer(reloc);
> + obj[1].relocation_count = 1;
> +
> + memset(&execbuf, 0, sizeof(execbuf));
> + execbuf.buffers_ptr = to_user_pointer(obj);
> + execbuf.buffer_count = 2;
> + execbuf.batch_len = size;
> + execbuf.flags = engine;
> +
> + return __gem_execbuf(fd, &execbuf);
> +}
> +
> +static void exec_batch_patched(int fd, int engine,
> + uint32_t cmd_bo, const uint32_t *cmds,
> + int size, int patch_offset,
> + long int expected_value)
> +{
> + const uint32_t target_bo = gem_create(fd, HANDLE_SIZE);
> + uint64_t actual_value = 0;
> + long int ret;
> +
> + ret = __exec_batch_patched(fd, engine, cmd_bo, cmds, size, target_bo, patch_offset, 0);
> + if (ret) {
> + igt_assert_lt(ret, 0);
> + gem_close(fd, target_bo);
> + igt_assert_eq(ret, expected_value);
> + return;
> + }
> +
> + gem_sync(fd, cmd_bo);
What evil is this covering up?
> +
> + gem_read(fd, target_bo, 0, &actual_value, sizeof(actual_value));
> +
> + gem_close(fd, target_bo);
> +
> + igt_assert_eq(actual_value, expected_value);
> +}
> +
> +static int __exec_batch(int fd, int engine, uint32_t cmd_bo,
> + const uint32_t *cmds, int size)
> +{
> + struct drm_i915_gem_execbuffer2 execbuf;
> + struct drm_i915_gem_exec_object2 obj[1];
> + int ret;
> +
> + gem_write(fd, cmd_bo, 0, cmds, size);
> +
> + memset(obj, 0, sizeof(obj));
> + obj[0].handle = cmd_bo;
> +
> + memset(&execbuf, 0, sizeof(execbuf));
> + execbuf.buffers_ptr = to_user_pointer(obj);
> + execbuf.buffer_count = 1;
> + execbuf.batch_len = size;
> + execbuf.flags = engine;
> +
> + ret = __gem_execbuf(fd, &execbuf);
> +
> + if (!ret)
> + gem_sync(fd, cmd_bo);
More evil?
> +
> + return ret;
> +}
> +
> +#if 0
> +static void print_batch(const uint32_t *cmds, const uint32_t sz)
> +{
> + const int commands = sz / 4;
> + int i;
> +
> + igt_info("Batch size %d\n", sz);
> + for (i = 0; i < commands; i++)
> + igt_info("0x%08x: 0x%08x\n", i, cmds[i]);
> +}
> +#else
> +#define print_batch(cmds, size)
> +#endif
> +
> +#define exec_batch(fd, engine, bo, cmds, sz, expected) \
> + print_batch(cmds, sz); \
> + igt_assert_eq(__exec_batch(fd, engine, bo, cmds, sz), expected)
> +
> +static void exec_split_batch(int fd, int engine, const uint32_t *cmds,
> + int size, int expected_ret)
> +{
> + struct drm_i915_gem_execbuffer2 execbuf;
> + struct drm_i915_gem_exec_object2 obj[1];
> + uint32_t cmd_bo;
> + const uint32_t noop[1024] = { 0 };
> + const int alloc_size = 4096 * 2;
> + const int actual_start_offset = 4096-sizeof(uint32_t);
> +
> + /* Allocate and fill a 2-page batch with noops */
> + cmd_bo = gem_create(fd, alloc_size);
> + gem_write(fd, cmd_bo, 0, noop, sizeof(noop));
> + gem_write(fd, cmd_bo, 4096, noop, sizeof(noop));
> +
> + /* Write the provided commands such that the first dword
> + * of the command buffer is the last dword of the first
> + * page (i.e. the command is split across the two pages).
> + */
> + gem_write(fd, cmd_bo, actual_start_offset, cmds, size);
> +
> + memset(obj, 0, sizeof(obj));
> + obj[0].handle = cmd_bo;
> +
> + memset(&execbuf, 0, sizeof(execbuf));
> + execbuf.buffers_ptr = to_user_pointer(obj);
> + execbuf.buffer_count = 1;
> + /* NB: We want batch_start_offset and batch_len to point to the block
> + * of the actual commands (i.e. at the last dword of the first page),
> + * but have to adjust both the start offset and length to meet the
> + * kernel driver's requirements on the alignment of those fields.
> + */
> + execbuf.batch_start_offset = actual_start_offset & ~0x7;
> + execbuf.batch_len =
> + ALIGN(size + actual_start_offset - execbuf.batch_start_offset,
> + 0x8);
> + execbuf.flags = engine;
> +
> + igt_assert_eq(__gem_execbuf(fd, &execbuf), expected_ret);
> +
> + gem_sync(fd, cmd_bo);
Yet more.
> + gem_close(fd, cmd_bo);
> +}
> +
> +static void exec_batch_chained(int fd, int engine,
> + uint32_t cmd_bo, const uint32_t *cmds,
> + int size, int patch_offset,
> + uint64_t expected_value,
> + int expected_return)
> +{
> + struct drm_i915_gem_execbuffer2 execbuf;
> + struct drm_i915_gem_exec_object2 obj[3];
> + struct drm_i915_gem_relocation_entry reloc[1];
> + struct drm_i915_gem_relocation_entry first_level_reloc;
> +
> + const uint32_t target_bo = gem_create(fd, 4096);
> + const uint32_t first_level_bo = gem_create(fd, 4096);
> + uint64_t actual_value = 0;
> + int ret;
> +
> + const uint32_t first_level_cmds[] = {
> + MI_BATCH_BUFFER_START | MI_BATCH_NON_SECURE_I965 | 1,
> + 0,
> + 0,
> + MI_BATCH_BUFFER_END,
> + };
> +
> + gem_write(fd, first_level_bo, 0,
> + first_level_cmds, sizeof(first_level_cmds));
> + gem_write(fd, cmd_bo, 0, cmds, size);
> +
> + memset(obj, 0, sizeof(obj));
> + obj[0].handle = target_bo;
> + obj[1].handle = cmd_bo;
> + obj[2].handle = first_level_bo;
> +
> + memset(reloc, 0, sizeof(reloc));
> + reloc[0].offset = patch_offset;
> + reloc[0].delta = 0;
> + reloc[0].target_handle = target_bo;
> + reloc[0].read_domains = I915_GEM_DOMAIN_COMMAND;
> + reloc[0].write_domain = I915_GEM_DOMAIN_COMMAND;
> + reloc[0].presumed_offset = -1;
> +
> + obj[1].relocation_count = 1;
> + obj[1].relocs_ptr = to_user_pointer(&reloc);
> +
> + memset(&first_level_reloc, 0, sizeof(first_level_reloc));
> + first_level_reloc.offset = 4;
> + first_level_reloc.delta = 0;
> + first_level_reloc.target_handle = cmd_bo;
> + first_level_reloc.read_domains = I915_GEM_DOMAIN_COMMAND;
> + first_level_reloc.write_domain = 0;
> + obj[2].relocation_count = 1;
> + obj[2].relocs_ptr = to_user_pointer(&first_level_reloc);
> +
> + memset(&execbuf, 0, sizeof(execbuf));
> + execbuf.buffers_ptr = to_user_pointer(obj);
> + execbuf.buffer_count = 3;
> + execbuf.batch_len = sizeof(first_level_cmds);
> + execbuf.flags = engine;
> +
> + ret = __gem_execbuf(fd, &execbuf);
> + if (expected_return && ret == expected_return)
> + goto out;
> +
> + gem_sync(fd, cmd_bo);
What are you doing???
> +
> + gem_read(fd,target_bo, 0, &actual_value, sizeof(actual_value));
> +
> +out:
> + if (!expected_return)
> + igt_assert_eq(expected_value, actual_value);
> + else
> + igt_assert_neq(expected_value, actual_value);
> +
> + gem_close(fd, first_level_bo);
> + gem_close(fd, target_bo);
> +}
> +
> +static void test_secure_batches(const int fd)
> +{
> + int v = -1;
> + drm_i915_getparam_t gp;
> +
> + gp.param = I915_PARAM_HAS_SECURE_BATCHES;
> + gp.value = &v;
> +
> + igt_assert_eq(drmIoctl(fd, DRM_IOCTL_I915_GETPARAM, &gp), 0);
> + igt_assert_eq(v, 0);
> +
> + igt_assert(!gem_engine_has_mutable_submission(fd, I915_EXEC_BLT));
> +}
> +
> +struct cmd {
> + uint32_t cmd;
> + int len;
> + const char *name;
> +};
> +
> +#define CMD(C, L) { .cmd = (C), .len = (L), .name = #C }
> +#define CMD_N(C) { .cmd = (C), .len = 1, .name = #C }
> +
> +static const struct cmd allowed_cmds[] = {
> + CMD_N(MI_NOOP),
> + CMD_N(MI_USER_INTERRUPT),
> + CMD_N(MI_WAIT_FOR_EVENT),
> + CMD(MI_FLUSH_DW, 5),
> + CMD_N(MI_ARB_CHECK),
> + CMD_N(MI_REPORT_HEAD),
> + CMD_N(MI_FLUSH),
> + CMD_N(MI_ARB_ON_OFF),
> + CMD_N(MI_SUSPEND_FLUSH),
> + CMD(MI_LOAD_SCAN_LINES_INCL, 2),
> + CMD(MI_LOAD_SCAN_LINES_EXCL, 2),
> +};
> +
> +static uint32_t *inject_cmd(uint32_t *batch, const uint32_t cmd, int len)
> +{
> + int i = 0;
> +
> + batch[i++] = cmd;
> +
> + while (--len)
> + batch[i++] = 0;
> +
> + return &batch[i];
> +}
> +
> +static unsigned long batch_num_cmds(const uint32_t * const batch_start,
> + const uint32_t * const batch_end)
> +{
> + igt_assert_lte((unsigned long)batch_start, (unsigned long)batch_end);
> +
> + return batch_end - batch_start;
> +}
> +
> +static unsigned long batch_bytes(const uint32_t * const batch_start,
> + const uint32_t * const batch_end)
> +{
> + const unsigned long bytes = batch_num_cmds(batch_start, batch_end) * 4;
> +
> + igt_assert(!(bytes & 0x7));
> +
> + return bytes;
> +}
> +
> +static void test_allowed_all(const int fd, const uint32_t handle)
> +{
> + uint32_t batch[4096];
> + uint32_t *b = &batch[0];
> +
> + for (int i = 0; i < ARRAY_SIZE(allowed_cmds); i++)
> + b = inject_cmd(b, allowed_cmds[i].cmd,
> + allowed_cmds[i].len);
> +
> + if (!(batch_num_cmds(batch, b) % 2))
> + b = inject_cmd(b, MI_NOOP, 1);
> +
> + b = inject_cmd(b, MI_BATCH_BUFFER_END, 1);
> +
> + exec_batch(fd, I915_EXEC_BLT, handle, batch, batch_bytes(batch, b), 0);
> +}
> +
> +static void test_allowed_single(const int fd, const uint32_t handle)
> +{
> + uint32_t batch[4096];
> + int ret;
> +
> + for (int i = 0; i < ARRAY_SIZE(allowed_cmds); i++) {
> + uint32_t *b = &batch[0];
> +
> + b = inject_cmd(b, allowed_cmds[i].cmd,
> + allowed_cmds[i].len);
> +
> + if (!(batch_num_cmds(batch, b) % 2))
> + b = inject_cmd(b, MI_NOOP, 1);
> +
> + b = inject_cmd(b, MI_BATCH_BUFFER_END, 1);
> +
> + ret = __exec_batch(fd, I915_EXEC_BLT, handle,
> + batch, batch_bytes(batch, b));
> +
> + igt_assert_eq(ret, 0);
> + };
> +}
> +
> +static void test_bb_secure(const int fd, const uint32_t handle)
> +{
> + struct drm_i915_gem_execbuffer2 execbuf;
> + struct drm_i915_gem_exec_object2 obj[1];
> + struct drm_i915_gem_relocation_entry reloc[1];
> + int ret;
> +
> + const uint32_t batch_secure[] = {
> + MI_BATCH_BUFFER_START | 1,
> + 12,
> + 0,
> + MI_NOOP,
> + MI_NOOP,
> + MI_BATCH_BUFFER_END,
> + };
> +
> + gem_write(fd, handle, 0, batch_secure, sizeof(batch_secure));
> +
> + memset(obj, 0, sizeof(obj));
> + obj[0].handle = handle;
> +
> + memset(reloc, 0, sizeof(reloc));
> + reloc[0].offset = 1 * sizeof(uint32_t);
> + reloc[0].target_handle = handle;
> + reloc[0].delta = 4 * sizeof(uint32_t);
> + reloc[0].read_domains = I915_GEM_DOMAIN_COMMAND;
> + reloc[0].write_domain = 0;
> + reloc[0].presumed_offset = -1;
> +
> + obj[0].relocs_ptr = to_user_pointer(reloc);
> + obj[0].relocation_count = 1;
> +
> + memset(&execbuf, 0, sizeof(execbuf));
> + execbuf.buffers_ptr = to_user_pointer(obj);
> + execbuf.buffer_count = 1;
> + execbuf.batch_len = sizeof(batch_secure);
> + execbuf.flags = I915_EXEC_BLT;
> +
> + ret = __gem_execbuf(fd, &execbuf);
> +
> + igt_assert_eq(ret, -EACCES);
> +}
> +
> +#define BB_START_PARAM 0
> +#define BB_START_OUT 1
> +#define BB_START_CMD 2
> +
> +static void test_bb_start(const int fd, const uint32_t handle, int test)
> +{
> + struct drm_i915_gem_execbuffer2 execbuf;
> + struct drm_i915_gem_exec_object2 obj[2];
> + struct drm_i915_gem_relocation_entry reloc[3];
> + const uint32_t target_bo = gem_create(fd, 4096);
> + uint32_t *dst;
> + int ret;
> + unsigned int jump_off;
> +
> + const uint32_t batch[] = {
> + MI_NOOP,
> + MI_NOOP,
> + MI_NOOP,
> + MI_NOOP,
> + MI_STORE_DWORD_IMM,
> + 0,
> + 0,
> + 1,
> + MI_STORE_DWORD_IMM,
> + 4,
> + 0,
> + 2,
> + MI_COND_BATCH_BUFFER_END | 1,
> + 0,
> + 0,
> + 0,
> + MI_BATCH_BUFFER_START | MI_BATCH_NON_SECURE_I965 | 1,
> + 0,
> + 0,
> + MI_BATCH_BUFFER_END,
> + };
> +
> + igt_require(gem_can_store_dword(fd, I915_EXEC_BLT));
> +
> + switch (test) {
> + case BB_START_PARAM:
> + jump_off = 5 * sizeof(uint32_t);
> + break;
> + case BB_START_CMD:
> + jump_off = 8 * sizeof(uint32_t);
> + break;
> + default:
> + jump_off = 0xf00d0000;
> + }
> +
> + gem_write(fd, handle, 0, batch, sizeof(batch));
> +
> + memset(obj, 0, sizeof(obj));
> + obj[0].handle = target_bo;
> + obj[1].handle = handle;
> +
> + memset(reloc, 0, sizeof(reloc));
> + reloc[0].offset = 5 * sizeof(uint32_t);
> + reloc[0].target_handle = obj[0].handle;
> + reloc[0].delta = 0;
> + reloc[0].read_domains = I915_GEM_DOMAIN_COMMAND;
> + reloc[0].write_domain = I915_GEM_DOMAIN_COMMAND;
> + reloc[0].presumed_offset = -1;
> +
> + reloc[1].offset = 9 * sizeof(uint32_t);
> + reloc[1].target_handle = obj[0].handle;
> + reloc[1].delta = 1 * sizeof(uint32_t);
> + reloc[1].read_domains = I915_GEM_DOMAIN_COMMAND;
> + reloc[1].write_domain = I915_GEM_DOMAIN_COMMAND;
> + reloc[1].presumed_offset = -1;
> +
> + reloc[2].offset = 17 * sizeof(uint32_t);
> + reloc[2].target_handle = obj[1].handle;
> + reloc[2].delta = jump_off;
> + reloc[2].read_domains = I915_GEM_DOMAIN_COMMAND;
> + reloc[2].write_domain = 0;
> + reloc[2].presumed_offset = -1;
> +
> + obj[1].relocs_ptr = to_user_pointer(reloc);
> + obj[1].relocation_count = 3;
> +
> + memset(&execbuf, 0, sizeof(execbuf));
> + execbuf.buffers_ptr = to_user_pointer(obj);
> + execbuf.buffer_count = 2;
> + execbuf.batch_len = sizeof(batch);
> + execbuf.flags = I915_EXEC_BLT;
> +
> + dst = gem_mmap__cpu(fd, obj[0].handle, 0, 4096,
> + PROT_READ | PROT_WRITE);
> +
> + igt_assert_eq(dst[0], 0);
> + igt_assert_eq(dst[1], 0);
> +
> + ret = __gem_execbuf(fd, &execbuf);
> +
> + switch (test) {
> + case BB_START_PARAM:
> + igt_assert_eq(ret, -EINVAL);
> + break;
> + case BB_START_CMD:
> + igt_assert_eq(ret, 0);
> +
> + while (READ_ONCE(dst[0]) == 0)
> + ;
> +
> + while (READ_ONCE(dst[1]) == 0)
> + ;
> +
> + igt_assert_eq(dst[0], 1);
> + igt_assert_eq(dst[1], 2);
> +
> + igt_info("values now %x %x\n", dst[0], dst[1]);
> +
> + dst[0] = 0;
> +
> + igt_info("values now %x %x\n", dst[0], dst[1]);
> +
> + gem_sync(fd, handle);
> +
> + igt_info("values now %x %x\n", dst[0], dst[1]);
> +
> + igt_assert_eq(dst[0], 0);
> + igt_assert_eq(dst[1], 2);
> +
> + break;
> +
> + case BB_START_OUT:
> + igt_assert_eq(ret, -EINVAL);
> + break;
> + }
> +
> + gem_sync(fd, handle);
> + gem_munmap(dst, 4096);
> + gem_close(fd, target_bo);
> +}
> +
> +static void test_bb_chained(const int fd, const uint32_t handle)
> +{
> + const uint32_t batch[] = {
> + (0x20 << 23) | 2, /* MI_STORE_DATA_IMM */
> + 0,
> + 0,
> + 0xbaadf00d,
> + MI_NOOP,
> + MI_BATCH_BUFFER_END,
> + };
> +
> + exec_batch_chained(fd, I915_EXEC_RENDER,
> + handle,
> + batch, sizeof(batch),
> + 4,
> + 0xbaadf00d,
> + 0);
> +
> + exec_batch_chained(fd, I915_EXEC_BLT,
> + handle,
> + batch, sizeof(batch),
> + 4,
> + 0xbaadf00d,
> + EPERM);
> +}
> +
> +static void test_cmd_crossing_page(const int fd, const uint32_t handle)
> +{
> + const uint32_t lri_ok[] = {
> + MI_LOAD_REGISTER_IMM,
> + BCS_GPR(0),
> + 0xbaadf00d,
> + MI_BATCH_BUFFER_END,
> + };
> + const uint32_t store_reg[] = {
> + MI_STORE_REGISTER_MEM | (4 - 2),
> + BCS_GPR(0),
> + 0, /* reloc */
> + 0, /* reloc */
> + MI_NOOP,
> + MI_BATCH_BUFFER_END,
> + };
> +
> + exec_split_batch(fd, I915_EXEC_BLT,
> + lri_ok, sizeof(lri_ok),
> + 0);
> +
> + exec_batch_patched(fd, I915_EXEC_BLT, handle,
> + store_reg, sizeof(store_reg),
> + 2 * sizeof(uint32_t), /* reloc */
> + 0xbaadf00d);
> +}
> +
> +static void test_invalid_length(const int fd, const uint32_t handle)
> +{
> + const uint32_t ok_val = 0xbaadf00d;
> + const uint32_t bad_val = 0xf00dbaad;
> + const uint32_t noops[8192] = { 0, };
> +
> + const uint32_t lri_ok[] = {
> + MI_LOAD_REGISTER_IMM,
> + BCS_GPR(0),
> + ok_val,
> + MI_BATCH_BUFFER_END,
> + };
> +
> + const uint32_t lri_bad[] = {
> + MI_LOAD_REGISTER_IMM,
> + BCS_GPR(0),
> + bad_val,
> + MI_BATCH_BUFFER_END,
> + };
> +
> + const uint32_t store_reg[] = {
> + MI_STORE_REGISTER_MEM | (4 - 2),
> + BCS_GPR(0),
> + 0, /* reloc */
> + 0, /* reloc */
> + MI_NOOP,
> + MI_BATCH_BUFFER_END,
> + };
> +
> + exec_batch(fd, I915_EXEC_BLT, handle,
> + lri_ok, sizeof(lri_ok),
> + 0);
> +
> + exec_batch_patched(fd, I915_EXEC_BLT, handle,
> + store_reg, sizeof(store_reg),
> + 2 * sizeof(uint32_t), /* reloc */
> + ok_val);
> +
> + exec_batch(fd, I915_EXEC_BLT, handle,
> + lri_bad, 0,
> + 0);
> +
> + exec_batch_patched(fd, I915_EXEC_BLT, handle,
> + store_reg, sizeof(store_reg),
> + 2 * sizeof(uint32_t), /* reloc */
> + ok_val);
> +
> + exec_batch(fd, I915_EXEC_BLT, handle,
> + lri_ok, 4096,
> + 0);
> +
> + igt_assert_eq(__gem_write(fd, handle, 0, noops, 4097), -EINVAL);
> +}
> +
> +struct reg {
> + uint32_t addr;
> + uint32_t mask;
> + bool masked_write;
> + bool privileged;
> +};
> +
> +#define REG_M(ADDR, MASK, WM, P) { (ADDR), (MASK), (WM), (P) }
> +#define REG(ADDR) REG_M(ADDR, 0xffffffff, false, false)
> +#define REG_P(ADDR) REG_M(ADDR, 0xffffffff, false, true)
> +
> +static const struct reg regs[] = {
> + REG_M(BCS_SWCTRL, 0x3, true, false),
> + REG(BCS_GPR(0)),
> + REG(BCS_GPR_UDW(0)),
> + REG(BCS_GPR(1)),
> + REG(BCS_GPR_UDW(1)),
> + REG(BCS_GPR(2)),
> + REG(BCS_GPR_UDW(2)),
> + REG(BCS_GPR(3)),
> + REG(BCS_GPR_UDW(3)),
> + REG(BCS_GPR(4)),
> + REG(BCS_GPR_UDW(4)),
> + REG(BCS_GPR(5)),
> + REG(BCS_GPR_UDW(5)),
> + REG(BCS_GPR(6)),
> + REG(BCS_GPR_UDW(6)),
> + REG(BCS_GPR(7)),
> + REG(BCS_GPR_UDW(7)),
> + REG(BCS_GPR(8)),
> + REG(BCS_GPR_UDW(8)),
> + REG(BCS_GPR(9)),
> + REG(BCS_GPR_UDW(9)),
> + REG(BCS_GPR(10)),
> + REG(BCS_GPR_UDW(10)),
> + REG(BCS_GPR(11)),
> + REG(BCS_GPR_UDW(11)),
> + REG(BCS_GPR(12)),
> + REG(BCS_GPR_UDW(12)),
> + REG(BCS_GPR(13)),
> + REG(BCS_GPR_UDW(13)),
> + REG(BCS_GPR(14)),
> + REG(BCS_GPR_UDW(14)),
> + REG(BCS_GPR(15)),
> + REG(BCS_GPR_UDW(15)),
> +
> + REG_P(0),
> + REG_P(200000),
> +
> + REG_P(BCS_SWCTRL - 1),
> + REG_P(BCS_SWCTRL - 2),
> + REG_P(BCS_SWCTRL - 3),
> + REG_P(BCS_SWCTRL - 4),
> + REG_P(BCS_SWCTRL + 4),
> +
> + REG_P(BCS_GPR(0) - 1),
> + REG_P(BCS_GPR(0) - 2),
> + REG_P(BCS_GPR(0) - 3),
> + REG_P(BCS_GPR(0) - 4),
> + REG_P(BCS_GPR_UDW(15) + 4),
> +};
> +
> +static void test_register(const int fd, const uint32_t handle,
> + const struct reg *r)
> +{
> + const uint32_t lri_zero[] = {
> + MI_LOAD_REGISTER_IMM,
> + r->addr,
> + r->masked_write ? 0xffff0000 : 0,
> + MI_BATCH_BUFFER_END,
> + };
> +
> + const uint32_t lri_mask[] = {
> + MI_LOAD_REGISTER_IMM,
> + r->addr,
> + r->masked_write ? (r->mask << 16) | r->mask : r->mask,
> + MI_BATCH_BUFFER_END,
> + };
> +
> + const uint32_t store_reg[] = {
> + MI_STORE_REGISTER_MEM | (4 - 2),
> + r->addr,
> + 0, /* reloc */
> + 0, /* reloc */
> + MI_NOOP,
> + MI_BATCH_BUFFER_END,
> + };
> +
> + exec_batch(fd, I915_EXEC_BLT, handle,
> + lri_mask, sizeof(lri_mask),
> + r->privileged ? -EACCES : 0);
> +
> + exec_batch_patched(fd, I915_EXEC_BLT, handle,
> + store_reg, sizeof(store_reg),
> + 2 * sizeof(uint32_t), /* reloc */
> + r->privileged ? -EACCES : r->mask);
> +
> + exec_batch(fd, I915_EXEC_BLT, handle,
> + lri_zero, sizeof(lri_zero),
> + r->privileged ? -EACCES : 0);
> +
> + exec_batch_patched(fd, I915_EXEC_BLT, handle,
> + store_reg, sizeof(store_reg),
> + 2 * sizeof(uint32_t), /* reloc */
> + r->privileged ? -EACCES : 0);
> +}
> +
> +static void test_valid_registers(const int fd, const uint32_t handle)
> +{
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(regs); i++)
> + test_register(fd, handle, ®s[i]);
> +}
> +
> +static long int read_reg(const int fd, const uint32_t handle,
> + const uint32_t addr)
> +{
> + const uint32_t store_reg[] = {
> + MI_STORE_REGISTER_MEM | (4 - 2),
> + addr,
> + 0, /* reloc */
> + 0, /* reloc */
> + MI_NOOP,
> + MI_BATCH_BUFFER_END,
> + };
> + uint32_t target_bo;
> + uint32_t value;
> + long int ret;
> +
> + target_bo = gem_create(fd, HANDLE_SIZE);
> +
> + ret = __exec_batch_patched(fd, I915_EXEC_BLT, handle,
> + store_reg, sizeof(store_reg),
> + target_bo, 2 * sizeof(uint32_t), 0);
> +
> + if (ret) {
> + igt_assert_lt(ret, 0);
> + gem_close(fd, target_bo);
> + return ret;
> + }
> +
> + gem_sync(fd, handle);
> +
> + gem_read(fd, target_bo, 0, &value, sizeof(value));
> +
> + gem_close(fd, target_bo);
> +
> + return value;
> +}
> +
> +static int write_reg(const int fd, const uint32_t handle,
> + const uint32_t addr, const uint32_t val)
> +{
> + const uint32_t lri[] = {
> + MI_LOAD_REGISTER_IMM,
> + addr,
> + val,
> + MI_BATCH_BUFFER_END,
> + };
> +
> + return __exec_batch(fd, I915_EXEC_BLT, handle,
> + lri, sizeof(lri));
> +}
> +
> +static void test_unaligned_access(const int fd, const uint32_t handle)
> +{
> + const uint32_t addr = BCS_GPR(4);
> + const uint32_t val = 0xbaadfead;
> + const uint32_t pre = 0x12345678;
> + const uint32_t post = 0x87654321;
> +
> + igt_assert_eq(write_reg(fd, handle, addr - 4, pre), 0);
> + igt_assert_eq(write_reg(fd, handle, addr, val), 0);
> + igt_assert_eq(write_reg(fd, handle, addr + 4, post), 0);
> +
> + igt_assert_eq(read_reg(fd, handle, addr - 4), pre);
> + igt_assert_eq(read_reg(fd, handle, addr), val);
> + igt_assert_eq(read_reg(fd, handle, addr + 4), post);
> +
> + for (int i = 0; i < 4; i++) {
> + igt_assert_eq(write_reg(fd, handle, addr + i, val), 0);
> + igt_assert_eq(read_reg(fd, handle, addr), val);
> +
> + igt_assert_eq(read_reg(fd, handle, addr + 1), val);
> + igt_assert_eq(read_reg(fd, handle, addr + 2), val);
> + igt_assert_eq(read_reg(fd, handle, addr + 3), val);
> + igt_assert_eq(read_reg(fd, handle, addr + 4), post);
> + igt_assert_eq(read_reg(fd, handle, addr - 3), pre);
> + igt_assert_eq(read_reg(fd, handle, addr - 2), pre);
> + igt_assert_eq(read_reg(fd, handle, addr - 1), pre);
> + }
> +}
> +
> +igt_main
> +{
> + uint32_t handle;
> + int fd;
> +
> + igt_fixture {
> + fd = drm_open_driver(DRIVER_INTEL);
> + igt_require_gem(fd);
> + gem_require_blitter(fd);
> +
> + parser_version = command_parser_version(fd);
> + /* igt_require(parser_version == 10); */
> +
> + igt_require(gem_uses_ppgtt(fd));
> + igt_require(gem_has_blt(fd));
> + igt_require(intel_gen(intel_get_drm_devid(fd)) == 9);
> +
> + handle = gem_create(fd, HANDLE_SIZE);
> +
> + igt_fork_hang_detector(fd);
> + }
> +
> + igt_subtest("secure-batches")
> + test_secure_batches(fd);
> +
> + igt_subtest("allowed-all")
> + test_allowed_all(fd, handle);
> +
> + igt_subtest("allowed-single")
> + test_allowed_single(fd, handle);
> +
> + igt_subtest("bb-start-param")
> + test_bb_start(fd, handle, BB_START_PARAM);
> +
> + igt_subtest("bb-start-out")
> + test_bb_start(fd, handle, BB_START_OUT);
> +
> + igt_subtest("bb-secure")
> + test_bb_secure(fd, handle);
> +
> + igt_subtest("bb-chained")
> + test_bb_chained(fd, handle);
> +
> + igt_subtest("cmd-crossing-page")
> + test_cmd_crossing_page(fd, handle);
> +
> + igt_subtest("batch-without-end") {
> + const uint32_t noop[1024] = { 0 };
> +
> + exec_batch(fd, I915_EXEC_BLT, handle,
> + noop, sizeof(noop),
> + -EINVAL);
> + }
> +
> + igt_subtest("batch-zero-length") {
> + const uint32_t noop[] = { 0, MI_BATCH_BUFFER_END };
> +
> + exec_batch(fd, I915_EXEC_BLT, handle,
> + noop, 0,
> + -EINVAL);
> + }
> +
> + igt_subtest("batch-invalid-length")
> + test_invalid_length(fd, handle);
> +
> + igt_subtest("basic-rejected") {
> + const uint32_t invalid_cmd[] = {
> + INSTR_INVALID_CLIENT << INSTR_CLIENT_SHIFT,
> + MI_BATCH_BUFFER_END,
> + };
> + const uint32_t invalid_set_context[] = {
> + MI_SET_CONTEXT | 32, /* invalid length */
> + MI_BATCH_BUFFER_END,
> + };
> +
> + exec_batch(fd, I915_EXEC_BLT, handle,
> + invalid_cmd, sizeof(invalid_cmd),
> + -EINVAL);
> +
> + exec_batch(fd, I915_EXEC_BLT, handle,
> + invalid_set_context, sizeof(invalid_set_context),
> + -EINVAL);
> + }
> +
> + igt_subtest("valid-registers")
> + test_valid_registers(fd, handle);
> +
> + igt_subtest("unaligned-access")
> + test_unaligned_access(fd, handle);
> +
> + igt_subtest_group {
> + igt_hang_t hang;
> +
> + igt_fixture igt_allow_hang(fd, 0, 0);
> +
> + igt_subtest("bb-start-cmd")
> + test_bb_start(fd, handle, BB_START_CMD);
> +
> + igt_fixture igt_disallow_hang(fd, hang);
> + }
> +
> + igt_fixture {
> + igt_stop_hang_detector();
> + gem_close(fd, handle);
> +
> + close(fd);
> + }
> +}
So why do you have so many unexplained syncs?
-Chris
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