Hi,
oscar.mateo@xxxxxxxxx writes:
> From: Oscar Mateo <oscar.mateo@xxxxxxxxx>
>
> Guarantees that error capture works at a very basic level.
>
> v2: Also check that the ring object contains a reloc with MI_BB_START
> for the presumed batch object's address.
>
> Signed-off-by: Oscar Mateo <oscar.mateo@xxxxxxxxx>
> ---
> tests/.gitignore | 1 +
> tests/Makefile.sources | 1 +
> tests/gem_error_capture.c | 269 ++++++++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 271 insertions(+)
> create mode 100644 tests/gem_error_capture.c
>
> diff --git a/tests/.gitignore b/tests/.gitignore
> index 146bab0..945574c 100644
> --- a/tests/.gitignore
> +++ b/tests/.gitignore
> @@ -27,6 +27,7 @@ gem_ctx_create
> gem_ctx_exec
> gem_double_irq_loop
> gem_dummy_reloc_loop
> +gem_error_capture
> gem_evict_alignment
> gem_evict_everything
> gem_exec_bad_domains
> diff --git a/tests/Makefile.sources b/tests/Makefile.sources
> index bf02a48..612beb6 100644
> --- a/tests/Makefile.sources
> +++ b/tests/Makefile.sources
> @@ -24,6 +24,7 @@ TESTS_progs_M = \
> gem_ctx_bad_exec \
> gem_ctx_exec \
> gem_dummy_reloc_loop \
> + gem_error_capture \
> gem_evict_alignment \
> gem_evict_everything \
> gem_exec_bad_domains \
> diff --git a/tests/gem_error_capture.c b/tests/gem_error_capture.c
> new file mode 100644
> index 0000000..88845c9
> --- /dev/null
> +++ b/tests/gem_error_capture.c
> @@ -0,0 +1,269 @@
> +/*
> + * Copyright © 2014 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:
> + * Oscar Mateo <oscar.mateo@xxxxxxxxx>
> + *
> + */
> +
> +/*
> + * Testcase: Check whether basic error state capture/dump mechanism is correctly
> + * working for all rings.
> + */
> +
> +#include <unistd.h>
> +#include <stdlib.h>
> +#include <stdint.h>
> +#include <stdio.h>
> +#include <string.h>
> +#include <fcntl.h>
> +#include <inttypes.h>
> +#include <errno.h>
> +#include <sys/stat.h>
> +#include <sys/ioctl.h>
> +#include "drm.h"
> +#include "ioctl_wrappers.h"
> +#include "drmtest.h"
> +#include "intel_io.h"
> +#include "igt_debugfs.h"
> +
> +#define MAGIC_NUMBER 0x10001
> +uint32_t batch[4] = {MI_NOOP, MI_BATCH_BUFFER_END, MAGIC_NUMBER, MAGIC_NUMBER};
> +
> +static void stop_rings(void)
> +{
> + int fd;
> + static const char buf[] = "0xf";
> +
> + fd = igt_debugfs_open("i915_ring_stop", O_WRONLY);
> + igt_assert(fd >= 0);
> +
> + igt_assert(write(fd, buf, sizeof(buf)) == sizeof(buf));
> +
> + close(fd);
> +}
> +
> +static bool rings_stopped(void)
> +{
> + int fd;
> + static char buf[128];
> + unsigned long long val;
> +
> + fd = igt_debugfs_open("i915_ring_stop", O_RDONLY);
> + igt_assert(fd >= 0);
> +
> + igt_assert(read(fd, buf, sizeof(buf)) > 0);
> + close(fd);
> +
> + sscanf(buf, "%llx", &val);
> +
> + return (bool)val;
> +}
Please use igt_set_stop_rings() and igt_get_stop_rings().
Also consider stopping only the ring you are testing for.
> +static void clear_error_state(void)
> +{
> + int fd;
> + static const char buf[] = "";
> +
> + fd = igt_debugfs_open("i915_error_state", O_WRONLY);
> + igt_assert(fd >= 0);
> +
> + igt_assert(write(fd, buf, sizeof(buf)) == sizeof(buf));
> + close(fd);
> +}
> +
> +static void check_error_state(const char *expected_ring_name,
> + uint64_t expected_offset)
> +{
> + FILE *file;
> + int debug_fd;
> + char *line = NULL;
> + size_t line_size = 0;
> + char *dashes = NULL;
> + char *ring_name = NULL;
> + int bb_matched = 0;
> + uint32_t gtt_offset;
> + char expected_line[32];
> + int req_matched = 0;
> + int requests;
> + uint32_t seqno, tail;
> + long jiffies;
> + int ringbuf_matched = 0;
> + unsigned int offset, command, expected_addr = 0;
> + int i, items;
> + bool bb_ok = false, req_ok = false, ringbuf_ok = false;
> +
> + debug_fd = igt_debugfs_open("i915_error_state", O_RDONLY);
> + igt_assert(debug_fd >= 0);
> + file = fdopen(debug_fd, "r");
> +
> + while (getline(&line, &line_size, file) > 0) {
> + dashes = strstr(line, "---");
> + if (!dashes)
> + continue;
> +
> + ring_name = realloc(ring_name, dashes - line);
> + strncpy(ring_name, line, dashes - line);
> + ring_name[dashes - line - 1] = '\0';
> +
> + bb_matched = sscanf(dashes, "--- gtt_offset = 0x%08x\n",
> + >t_offset);
> + if (bb_matched == 1) {
> + igt_assert(strstr(ring_name, expected_ring_name));
> + igt_assert(gtt_offset == expected_offset);
> +
> + for (i = 0; i < sizeof(batch) / 4; i++) {
> + igt_assert(getline(&line, &line_size, file) > 0);
> + snprintf(expected_line, sizeof(expected_line), "%08x : %08x",
> + 4*i, batch[i]);
> + igt_assert(strstr(line, expected_line));
> + }
> + bb_ok = true;
> + continue;
> + }
> +
> + req_matched = sscanf(dashes, "--- %d requests\n",
> + &requests);
> + if (req_matched == 1) {
> + igt_assert(strstr(ring_name, expected_ring_name));
> + igt_assert(requests == 1);
> +
> + igt_assert(getline(&line, &line_size, file) > 0);
> + items = sscanf(line, " seqno 0x%08x, emitted %ld, tail 0x%08x\n",
> + &seqno, &jiffies, &tail);
> + igt_assert(items == 3);
> + req_ok = true;
> + continue;
> + }
> +
> + ringbuf_matched = sscanf(dashes, "--- ringbuffer = 0x%08x\n",
> + >t_offset);
> + if (ringbuf_matched == 1) {
> + if (!strstr(ring_name, expected_ring_name))
> + continue;
> + igt_assert(req_ok);
> +
> + for (i = 0; i < tail / 4; i++) {
> + igt_assert(getline(&line, &line_size, file) > 0);
> + items = sscanf(line, "%08x : %08x\n",
> + &offset, &command);
> + igt_assert(items == 2);
> + if ((command & 0x1F800000) == MI_BATCH_BUFFER_START) {
> + igt_assert(getline(&line, &line_size, file) > 0);
> + items = sscanf(line, "%08x : %08x\n",
> + &offset, &expected_addr);
> + igt_assert(items == 2);
Should check for MAGIC_NUMBER here?
-Mika
> + i++;
> + }
> + }
> + igt_assert(expected_addr == expected_offset);
> + ringbuf_ok = true;
> + continue;
> + }
> +
> + if (bb_ok && req_ok && ringbuf_ok)
> + break;
> + }
> + igt_assert(bb_ok && req_ok && ringbuf_ok);
> +
> + free(line);
> + free(ring_name);
> + close(debug_fd);
> +}
> +
> +static void test(int fd, uint32_t handle, unsigned ring_id, const char *ring_name)
> +{
> + struct drm_i915_gem_execbuffer2 execbuf;
> + struct drm_i915_gem_exec_object2 exec;
> + uint64_t presumed_offset;
> +
> + gem_require_ring(fd, ring_id);
> +
> + clear_error_state();
> +
> + exec.handle = handle;
> + exec.relocation_count = 0;
> + exec.relocs_ptr = 0;
> + exec.alignment = 0;
> + exec.offset = 0;
> + exec.flags = 0;
> + exec.rsvd1 = 0;
> + exec.rsvd2 = 0;
> +
> + execbuf.buffers_ptr = (uintptr_t)&exec;
> + execbuf.buffer_count = 1;
> + execbuf.batch_start_offset = 0;
> + execbuf.batch_len = 16;
> + execbuf.cliprects_ptr = 0;
> + execbuf.num_cliprects = 0;
> + execbuf.DR1 = 0;
> + execbuf.DR4 = 0;
> + execbuf.flags = ring_id;
> + i915_execbuffer2_set_context_id(execbuf, 0);
> + execbuf.rsvd2 = 0;
> +
> + gem_execbuf(fd, &execbuf);
> + gem_sync(fd, handle);
> +
> + presumed_offset = exec.offset;
> +
> + stop_rings();
> +
> + gem_execbuf(fd, &execbuf);
> + gem_sync(fd, handle);
> +
> + igt_assert(rings_stopped() == false);
> + igt_assert(presumed_offset == exec.offset);
> +
> + check_error_state(ring_name, exec.offset);
> +}
> +
> +uint32_t handle;
> +int fd;
> +
> +igt_main
> +{
> + igt_fixture {
> + fd = drm_open_any();
> +
> + handle = gem_create(fd, 4096);
> + gem_write(fd, handle, 0, batch, sizeof(batch));
> + }
> +
> + igt_subtest("render")
> + test(fd, handle, I915_EXEC_RENDER, "render ring");
> +
> + igt_subtest("bsd")
> + test(fd, handle, I915_EXEC_BSD, "bsd ring");
> +
> + igt_subtest("blt")
> + test(fd, handle, I915_EXEC_BLT, "blitter ring");
> +
> + igt_subtest("vebox")
> + test(fd, handle, I915_EXEC_VEBOX, "video enhancement ring");
> +
> + igt_fixture {
> + gem_close(fd, handle);
> +
> + close(fd);
> + }
> +}
> --
> 1.9.0
>
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