Some of the workarounds are lost followed by a gpu reset, suspend/resume;
this patch adds a test which compares register state before and after
the test scenario.
This test currently verifies only bdw workarounds.
v2: address patch cleanup comments (ThomasW)
Add binary to ignore list and use igt_debugfs helper fns
to read debugfs file and igt_info for printing debug info.
Signed-off-by: Arun Siluvery <arun.siluvery@xxxxxxxxxxxxxxx>
---
tests/.gitignore | 1 +
tests/Makefile.sources | 1 +
tests/gem_workarounds.c | 233 ++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 235 insertions(+)
create mode 100644 tests/gem_workarounds.c
diff --git a/tests/.gitignore b/tests/.gitignore
index 985afbd..1103e2e 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -97,20 +97,21 @@ gem_tiled_fence_blits
gem_tiled_partial_pwrite_pread
gem_tiled_pread
gem_tiled_pread_pwrite
gem_tiled_swapping
gem_tiling_max_stride
gem_unfence_active_buffers
gem_unref_active_buffers
gem_userptr_blits
gem_wait_render_timeout
gem_write_read_ring_switch
+gem_workarounds
gen3_mixed_blits
gen3_render_linear_blits
gen3_render_mixed_blits
gen3_render_tiledx_blits
gen3_render_tiledy_blits
gen7_forcewake_mt
igt_fork_helper
igt_list_only
igt_no_exit
igt_no_exit_list_only
diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 0eb9369..a17acd1 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -127,20 +127,21 @@ TESTS_progs = \
gem_storedw_loop_vebox \
gem_threaded_access_tiled \
gem_tiled_fence_blits \
gem_tiled_pread \
gem_tiled_pread_pwrite \
gem_tiled_swapping \
gem_tiling_max_stride \
gem_unfence_active_buffers \
gem_unref_active_buffers \
gem_wait_render_timeout \
+ gem_workarounds \
gen3_mixed_blits \
gen3_render_linear_blits \
gen3_render_mixed_blits \
gen3_render_tiledx_blits \
gen3_render_tiledy_blits \
gen7_forcewake_mt \
kms_force_connector \
kms_sink_crc_basic \
kms_fence_pin_leak \
pm_psr \
diff --git a/tests/gem_workarounds.c b/tests/gem_workarounds.c
new file mode 100644
index 0000000..72e714f
--- /dev/null
+++ b/tests/gem_workarounds.c
@@ -0,0 +1,233 @@
+/*
+ * 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:
+ * Arun Siluvery <arun.siluvery@xxxxxxxxxxxxxxx>
+ *
+ */
+
+#define _GNU_SOURCE
+#include <stdbool.h>
+#include <unistd.h>
+#include <stdlib.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 <sys/mman.h>
+#include <time.h>
+#include <signal.h>
+
+#include "ioctl_wrappers.h"
+#include "drmtest.h"
+#include "igt_debugfs.h"
+#include "igt_aux.h"
+#include "intel_chipset.h"
+#include "intel_io.h"
+
+enum operation {
+ GPU_RESET = 0x01,
+ SUSPEND_RESUME = 0x02,
+};
+
+struct intel_wa_reg {
+ uint32_t addr;
+ uint32_t value;
+ uint32_t mask;
+};
+
+int drm_fd;
+uint32_t devid;
+static drm_intel_bufmgr *bufmgr;
+struct intel_batchbuffer *batch;
+int num_wa_regs;
+struct intel_wa_reg *wa_regs;
+
+
+static void test_hang_gpu(void)
+{
+ int retry_count = 30;
+ enum stop_ring_flags flags;
+ struct drm_i915_gem_execbuffer2 execbuf;
+ struct drm_i915_gem_exec_object2 gem_exec;
+ uint32_t b[2] = {MI_BATCH_BUFFER_END};
+
+ igt_assert(retry_count);
+ igt_set_stop_rings(STOP_RING_DEFAULTS);
+
+ memset(&gem_exec, 0, sizeof(gem_exec));
+ gem_exec.handle = gem_create(drm_fd, 4096);
+ gem_write(drm_fd, gem_exec.handle, 0, b, sizeof(b));
+
+ memset(&execbuf, 0, sizeof(execbuf));
+ execbuf.buffers_ptr = (uintptr_t)&gem_exec;
+ execbuf.buffer_count = 1;
+ execbuf.batch_len = sizeof(b);
+
+ drmIoctl(drm_fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf);
+
+ while(retry_count--) {
+ flags = igt_get_stop_rings();
+ if (flags == 0)
+ break;
+ igt_info("gpu hang not yet cleared, retries left %d\n", retry_count);
+ sleep(1);
+ }
+
+ flags = igt_get_stop_rings();
+ if (flags)
+ igt_set_stop_rings(STOP_RING_NONE);
+}
+
+static void test_suspend_resume(void)
+{
+ igt_info("Suspending the device ...\n");
+ igt_system_suspend_autoresume();
+}
+
+static void get_current_wa_data(struct intel_wa_reg **curr, int num)
+{
+ int i;
+ struct intel_wa_reg *ptr = NULL;
+
+ ptr = *curr;
+
+ intel_register_access_init(intel_get_pci_device(), 0);
+
+ for (i = 0; i < num; ++i) {
+ ptr[i].addr = wa_regs[i].addr;
+ ptr[i].value = intel_register_read(wa_regs[i].addr);
+ ptr[i].mask = wa_regs[i].mask;
+ }
+
+ intel_register_access_fini();
+}
+
+static void check_workarounds(enum operation op, int num)
+{
+ int i;
+ int fail_count = 0;
+ int status = 0;
+ struct intel_wa_reg *current_wa = NULL;
+
+ switch (op) {
+ case GPU_RESET:
+ test_hang_gpu();
+ break;
+
+ case SUSPEND_RESUME:
+ test_suspend_resume();
+ break;
+
+ default:
+ fail_count = 1;
+ goto out;
+ }
+
+ current_wa = malloc(num * sizeof(*current_wa));
+ igt_assert(current_wa);
+ get_current_wa_data(¤t_wa, num);
+
+ igt_info("Address\tbefore\t\tafter\t\tw/a mask\tresult\n");
+ for (i = 0; i < num; ++i) {
+ status = (current_wa[i].value & current_wa[i].mask) !=
+ (wa_regs[i].value & wa_regs[i].mask);
+ if (status)
+ ++fail_count;
+
+ igt_info("0x%X\t0x%08X\t0x%08X\t0x%08X\t%s\n",
+ current_wa[i].addr, wa_regs[i].value,
+ current_wa[i].value, current_wa[i].mask,
+ status ? "fail" : "success");
+ }
+
+out:
+ free(current_wa);
+ igt_assert(fail_count == 0);
+}
+
+int main(int argc, char **argv)
+{
+ igt_subtest_init(argc, argv);
+
+ igt_fixture {
+ int i;
+ int fd;
+ int ret;
+ FILE *file;
+ char *line = NULL;
+ size_t line_size;
+
+ drm_fd = drm_open_any();
+
+ bufmgr = drm_intel_bufmgr_gem_init(drm_fd, 4096);
+ devid = intel_get_drm_devid(drm_fd);
+ batch = intel_batchbuffer_alloc(bufmgr, devid);
+
+ fd = igt_debugfs_open("intel_wa_registers", O_RDONLY);
+ igt_assert(fd >= 0);
+
+ file = fdopen(fd, "r");
+ igt_assert(file > 0);
+
+ ret = getline(&line, &line_size, file);
+ igt_assert(ret > 0);
+ sscanf(line, "Workarounds applied: %d", &num_wa_regs);
+ igt_assert(num_wa_regs > 0);
+
+ wa_regs = malloc(num_wa_regs * sizeof(*wa_regs));
+
+ i = 0;
+ while(getline(&line, &line_size, file) > 0) {
+ sscanf(line, "0x%X: 0x%08X, mask: 0x%08X",
+ &wa_regs[i].addr, &wa_regs[i].value,
+ &wa_regs[i].mask);
+ ++i;
+ }
+
+ free(line);
+ fclose(file);
+ close(fd);
+ }
+
+ igt_subtest("check-workaround-data-after-reset") {
+ if (IS_BROADWELL(devid))
+ check_workarounds(GPU_RESET, num_wa_regs);
+ else
+ igt_skip_on("No Workaround table available!!\n");
+ }
+
+ igt_subtest("check-workaround-data-after-suspend-resume") {
+ if (IS_BROADWELL(devid))
+ check_workarounds(SUSPEND_RESUME, num_wa_regs);
+ else
+ igt_skip_on("No Workaround table available!!\n");
+ }
+
+ free(wa_regs);
+
+ close(drm_fd);
+ igt_exit();
+}
--
2.0.4
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