From: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
This test chekcs our code that enables Package C8+. The environment
requirements for this test are quite complicated:
- The machine needs to be properly configured to reach PC8+ when
possible, which means all the power management policies and device
drivers must be properly configured.
- Before running the test, the machine needs to have 0 PC8+
residency. If you run the test after the machine already has PC8+
residency, it means you'll be comparing post-PC8+ with post-PC8+,
so you won't be able to get things lost after the first time we
enter PC8+.
- This means that after you run the test once, you have to
reboot, unless you use the "--skip-zero-pc8-check" option, but
you really need to know what you're doing.
- You need at least one output connected.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
---
tests/.gitignore | 1 +
tests/Makefile.am | 1 +
tests/pc8.c | 555 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 557 insertions(+)
create mode 100644 tests/pc8.c
diff --git a/tests/.gitignore b/tests/.gitignore
index 451ab2d..c70fdb7 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -90,6 +90,7 @@ getstats
getversion
kms_flip
kms_render
+pc8
prime_nv_api
prime_nv_pcopy
prime_nv_test
diff --git a/tests/Makefile.am b/tests/Makefile.am
index a59c25f..3507716 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -2,6 +2,7 @@ if BUILD_TESTS
noinst_PROGRAMS = \
gem_stress \
ddi_compute_wrpll \
+ pc8 \
$(TESTS_progs) \
$(TESTS_progs_M) \
$(HANG) \
diff --git a/tests/pc8.c b/tests/pc8.c
new file mode 100644
index 0000000..7fdfeb5
--- /dev/null
+++ b/tests/pc8.c
@@ -0,0 +1,555 @@
+/*
+ * Copyright © 2013 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:
+ * Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
+ *
+ */
+
+#include <stdio.h>
+#include <assert.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include "drm.h"
+#include "drmtest.h"
+#include "intel_batchbuffer.h"
+#include "intel_gpu_tools.h"
+
+#define MSR_PC8_RES 0x630
+#define MSR_PC9_RES 0x631
+#define MSR_PC10_RES 0x632
+
+#define MAX_CONNECTORS 32
+#define MAX_ENCODERS 32
+#define MAX_CRTCS 16
+
+int drm_fd;
+
+/* Stuff used when creating FBs and mode setting. */
+struct mode_set_data {
+ drmModeResPtr res;
+ drmModeConnectorPtr connectors[MAX_CONNECTORS];
+
+ drm_intel_bufmgr *bufmgr;
+ uint32_t devid;
+};
+
+enum compare_step {
+ STEP_RESET,
+ STEP_RESTORED,
+};
+
+/* Stuff we query at different times so we can compare. */
+struct compare_data {
+ drmModeResPtr res;
+ drmModeEncoderPtr encoders[MAX_ENCODERS];
+ drmModeConnectorPtr connectors[MAX_CONNECTORS];
+ drmModeCrtcPtr crtcs[MAX_CRTCS];
+ drmModePropertyBlobPtr edids[MAX_CONNECTORS];
+
+ struct {
+ /* We know these are lost */
+ uint32_t arb_mode;
+ uint32_t tilectl;
+
+ /* Stuff touched at init_clock_gating, so we can make sure we
+ * don't need to call it when reiniting. */
+ uint32_t gen6_ucgctl2;
+ uint32_t gen7_l3cntlreg1;
+ uint32_t transa_chicken1;
+
+ uint32_t deier;
+ uint32_t gtier;
+
+ uint32_t ddi_buf_trans_a_1;
+ uint32_t ddi_buf_trans_b_5;
+ uint32_t ddi_buf_trans_c_10;
+ uint32_t ddi_buf_trans_d_15;
+ uint32_t ddi_buf_trans_e_20;
+ } regs;
+};
+
+static uint64_t get_residency(int fd, uint32_t type)
+{
+ int rc;
+ uint64_t ret;
+
+ rc = pread(fd, &ret, sizeof(uint64_t), type);
+ assert(rc == sizeof(uint64_t));
+
+ return ret;
+}
+
+static bool pc8_plus_residency_is_zero(int fd)
+{
+ uint64_t res_pc8, res_pc9, res_pc10;
+
+ res_pc8 = get_residency(fd, MSR_PC8_RES);
+ res_pc9 = get_residency(fd, MSR_PC9_RES);
+ res_pc10 = get_residency(fd, MSR_PC10_RES);
+
+ if (res_pc8 != 0 || res_pc9 != 0 || res_pc10 != 0)
+ return false;
+
+ return true;
+}
+
+static bool pc8_plus_residency_changed(int fd, unsigned int timeout_sec)
+{
+ unsigned int i;
+ uint64_t res_pc8, res_pc9, res_pc10;
+ int to_sleep = 100 * 1000;
+
+ res_pc8 = get_residency(fd, MSR_PC8_RES);
+ res_pc9 = get_residency(fd, MSR_PC9_RES);
+ res_pc10 = get_residency(fd, MSR_PC10_RES);
+
+ for (i = 0; i < timeout_sec * 1000 * 1000; i += to_sleep) {
+ if (res_pc8 != get_residency(fd, MSR_PC8_RES) ||
+ res_pc9 != get_residency(fd, MSR_PC9_RES) ||
+ res_pc10 != get_residency(fd, MSR_PC10_RES)) {
+ return true;
+ }
+ usleep(to_sleep);
+ }
+
+ return false;
+}
+
+static void disable_all_screens(struct mode_set_data *data)
+{
+ int i, rc;
+
+ for (i = 0; i < data->res->count_crtcs; i++) {
+ rc = drmModeSetCrtc(drm_fd, data->res->crtcs[i], -1, 0, 0,
+ NULL, 0, NULL);
+ assert(rc == 0);
+ }
+}
+
+static uint32_t create_fb(struct mode_set_data *data, int width, int height)
+{
+ struct kmstest_fb fb;
+ cairo_t *cr;
+ uint32_t buffer_id;
+
+ buffer_id = kmstest_create_fb(drm_fd, width, height, 32, 24, false,
+ &fb);
+ cr = kmstest_get_cairo_ctx(drm_fd, &fb);
+ kmstest_paint_test_pattern(cr, width, height);
+ return buffer_id;
+}
+
+static void enable_one_screen(struct mode_set_data *data)
+{
+ uint32_t crtc_id = 0, buffer_id = 0, connector_id = 0;
+ drmModeModeInfoPtr mode = NULL;
+ int i, rc;
+
+ for (i = 0; i < data->res->count_connectors; i++) {
+ drmModeConnectorPtr c = data->connectors[i];
+
+ if (c->connection == DRM_MODE_CONNECTED && c->count_modes) {
+ connector_id = c->connector_id;
+ mode = &c->modes[0];
+ break;
+ }
+ }
+
+ crtc_id = data->res->crtcs[0];
+ buffer_id = create_fb(data, mode->hdisplay, mode->vdisplay);
+
+ assert(crtc_id);
+ assert(buffer_id);
+ assert(connector_id);
+ assert(mode);
+
+ rc = drmModeSetCrtc(drm_fd, crtc_id, buffer_id, 0, 0, &connector_id,
+ 1, mode);
+ assert(rc == 0);
+}
+
+static void get_connector_edid(struct compare_data *data, int index)
+{
+ unsigned int i;
+ drmModeConnectorPtr connector = data->connectors[index];
+ drmModeObjectPropertiesPtr props;
+
+ props = drmModeObjectGetProperties(drm_fd, connector->connector_id,
+ DRM_MODE_OBJECT_CONNECTOR);
+
+ for (i = 0; i < props->count_props; i++) {
+ drmModePropertyPtr prop = drmModeGetProperty(drm_fd,
+ props->props[i]);
+
+ if (strcmp(prop->name, "EDID") == 0) {
+ assert(prop->flags & DRM_MODE_PROP_BLOB);
+ assert(prop->count_blobs == 0);
+ data->edids[index] = drmModeGetPropertyBlob(drm_fd,
+ props->prop_values[i]);
+ }
+
+ drmModeFreeProperty(prop);
+ }
+
+ drmModeFreeObjectProperties(props);
+}
+
+static void init_mode_set_data(struct mode_set_data *data)
+{
+ int i;
+
+ data->res = drmModeGetResources(drm_fd);
+ assert(data->res);
+ assert(data->res->count_connectors <= MAX_CONNECTORS);
+
+ for (i = 0; i < data->res->count_connectors; i++)
+ data->connectors[i] = drmModeGetConnector(drm_fd,
+ data->res->connectors[i]);
+
+ data->bufmgr = drm_intel_bufmgr_gem_init(drm_fd, 4096);
+ data->devid = intel_get_drm_devid(drm_fd);
+
+ do_or_die(drmtest_set_vt_graphics_mode());
+ drm_intel_bufmgr_gem_enable_reuse(data->bufmgr);
+}
+
+static void fini_mode_set_data(struct mode_set_data *data)
+{
+ int i;
+
+ drm_intel_bufmgr_destroy(data->bufmgr);
+
+ for (i = 0; i < data->res->count_connectors; i++)
+ drmModeFreeConnector(data->connectors[i]);
+ drmModeFreeResources(data->res);
+}
+
+static void get_drm_info(struct compare_data *data)
+{
+ int i;
+
+ data->res = drmModeGetResources(drm_fd);
+ assert(data->res);
+
+ assert(data->res->count_connectors <= MAX_CONNECTORS);
+ assert(data->res->count_encoders <= MAX_ENCODERS);
+ assert(data->res->count_crtcs <= MAX_CRTCS);
+
+ for (i = 0; i < data->res->count_connectors; i++) {
+ data->connectors[i] = drmModeGetConnector(drm_fd,
+ data->res->connectors[i]);
+ get_connector_edid(data, i);
+ }
+ for (i = 0; i < data->res->count_encoders; i++)
+ data->encoders[i] = drmModeGetEncoder(drm_fd,
+ data->res->encoders[i]);
+ for (i = 0; i < data->res->count_crtcs; i++)
+ data->crtcs[i] = drmModeGetCrtc(drm_fd, data->res->crtcs[i]);
+
+ intel_register_access_init(intel_get_pci_device(), 0);
+ data->regs.arb_mode = INREG(0x4030);
+ data->regs.tilectl = INREG(0x101000);
+ data->regs.gen6_ucgctl2 = INREG(0x9404);
+ data->regs.gen7_l3cntlreg1 = INREG(0xB0C1);
+ data->regs.transa_chicken1 = INREG(0xF0060);
+ data->regs.deier = INREG(0x4400C);
+ data->regs.gtier = INREG(0x4401C);
+ data->regs.ddi_buf_trans_a_1 = INREG(0x64E00);
+ data->regs.ddi_buf_trans_b_5 = INREG(0x64E70);
+ data->regs.ddi_buf_trans_c_10 = INREG(0x64EE0);
+ data->regs.ddi_buf_trans_d_15 = INREG(0x64F58);
+ data->regs.ddi_buf_trans_e_20 = INREG(0x64FCC);
+ intel_register_access_fini();
+}
+
+static void free_drm_info(struct compare_data *data)
+{
+ int i;
+
+ for (i = 0; i < data->res->count_connectors; i++) {
+ drmModeFreeConnector(data->connectors[i]);
+ drmModeFreePropertyBlob(data->edids[i]);
+ }
+ for (i = 0; i < data->res->count_encoders; i++)
+ drmModeFreeEncoder(data->encoders[i]);
+ for (i = 0; i < data->res->count_crtcs; i++)
+ drmModeFreeCrtc(data->crtcs[i]);
+
+ drmModeFreeResources(data->res);
+}
+
+#define COMPARE(d1, d2, data) assert(d1->data == d2->data)
+#define COMPARE_ARRAY(d1, d2, size, data) do { \
+ for (i = 0; i < size; i++) \
+ assert(d1->data[i] == d2->data[i]); \
+} while (0)
+
+static void assert_drm_resources_equal(struct compare_data *d1,
+ struct compare_data *d2)
+{
+ COMPARE(d1, d2, res->count_connectors);
+ COMPARE(d1, d2, res->count_encoders);
+ COMPARE(d1, d2, res->count_crtcs);
+ COMPARE(d1, d2, res->min_width);
+ COMPARE(d1, d2, res->max_width);
+ COMPARE(d1, d2, res->min_height);
+ COMPARE(d1, d2, res->max_height);
+}
+
+static void assert_modes_equal(drmModeModeInfoPtr m1, drmModeModeInfoPtr m2)
+{
+ COMPARE(m1, m2, clock);
+ COMPARE(m1, m2, hdisplay);
+ COMPARE(m1, m2, hsync_start);
+ COMPARE(m1, m2, hsync_end);
+ COMPARE(m1, m2, htotal);
+ COMPARE(m1, m2, hskew);
+ COMPARE(m1, m2, vdisplay);
+ COMPARE(m1, m2, vsync_start);
+ COMPARE(m1, m2, vsync_end);
+ COMPARE(m1, m2, vtotal);
+ COMPARE(m1, m2, vscan);
+ COMPARE(m1, m2, vrefresh);
+ COMPARE(m1, m2, flags);
+ COMPARE(m1, m2, type);
+ assert(strcmp(m1->name, m2->name) == 0);
+}
+
+static void assert_drm_connectors_equal(drmModeConnectorPtr c1,
+ drmModeConnectorPtr c2)
+{
+ int i;
+
+ COMPARE(c1, c2, connector_id);
+ COMPARE(c1, c2, connector_type);
+ COMPARE(c1, c2, connector_type_id);
+ COMPARE(c1, c2, mmWidth);
+ COMPARE(c1, c2, mmHeight);
+ COMPARE(c1, c2, count_modes);
+ COMPARE(c1, c2, count_props);
+ COMPARE(c1, c2, count_encoders);
+ COMPARE_ARRAY(c1, c2, c1->count_props, props);
+ COMPARE_ARRAY(c1, c2, c1->count_encoders, encoders);
+
+ for (i = 0; i < c1->count_modes; i++)
+ assert_modes_equal(&c1->modes[0], &c2->modes[0]);
+}
+
+static void assert_drm_encoders_equal(drmModeEncoderPtr e1,
+ drmModeEncoderPtr e2)
+{
+ COMPARE(e1, e2, encoder_id);
+ COMPARE(e1, e2, encoder_type);
+ COMPARE(e1, e2, possible_crtcs);
+ COMPARE(e1, e2, possible_clones);
+}
+
+static void assert_drm_crtcs_equal(drmModeCrtcPtr c1, drmModeCrtcPtr c2)
+{
+ COMPARE(c1, c2, crtc_id);
+}
+
+static void assert_drm_edids_equal(drmModePropertyBlobPtr e1,
+ drmModePropertyBlobPtr e2)
+{
+ if (!e1 && !e2)
+ return;
+ assert(e1 && e2);
+
+ COMPARE(e1, e2, id);
+ COMPARE(e1, e2, length);
+
+ assert(memcmp(e1->data, e2->data, e1->length) == 0);
+}
+
+static void compare_registers(struct compare_data *d1, struct compare_data *d2,
+ enum compare_step step)
+{
+ /* Things that shouldn't change at all. */
+ COMPARE(d1, d2, regs.gen6_ucgctl2);
+ COMPARE(d1, d2, regs.gen7_l3cntlreg1);
+ COMPARE(d1, d2, regs.transa_chicken1);
+ COMPARE(d1, d2, regs.arb_mode);
+ COMPARE(d1, d2, regs.tilectl);
+ assert(d1->regs.deier & (1 << 31));
+ assert(d2->regs.deier & (1 << 31));
+
+ switch (step) {
+ case STEP_RESET:
+ assert(d2->regs.gtier == 0);
+ assert(d2->regs.ddi_buf_trans_a_1 == 0);
+ assert(d2->regs.ddi_buf_trans_b_5 == 0);
+ assert(d2->regs.ddi_buf_trans_c_10 == 0);
+ assert(d2->regs.ddi_buf_trans_d_15 == 0);
+ assert(d2->regs.ddi_buf_trans_e_20 == 0);
+ break;
+ case STEP_RESTORED:
+ COMPARE(d1, d2, regs.arb_mode);
+ COMPARE(d1, d2, regs.tilectl);
+ COMPARE(d1, d2, regs.gtier);
+ COMPARE(d1, d2, regs.ddi_buf_trans_a_1);
+ COMPARE(d1, d2, regs.ddi_buf_trans_b_5);
+ COMPARE(d1, d2, regs.ddi_buf_trans_c_10);
+ COMPARE(d1, d2, regs.ddi_buf_trans_d_15);
+ COMPARE(d1, d2, regs.ddi_buf_trans_e_20);
+ break;
+ default:
+ assert(0);
+ }
+}
+
+static void assert_drm_infos_equal(struct compare_data *d1,
+ struct compare_data *d2,
+ enum compare_step step)
+{
+ int i;
+
+ assert_drm_resources_equal(d1, d2);
+
+ for (i = 0; i < d1->res->count_connectors; i++) {
+ assert_drm_connectors_equal(d1->connectors[i],
+ d2->connectors[i]);
+ assert_drm_edids_equal(d1->edids[i], d2->edids[i]);
+ }
+
+ for (i = 0; i < d1->res->count_encoders; i++)
+ assert_drm_encoders_equal(d1->encoders[i], d2->encoders[i]);
+
+ for (i = 0; i < d1->res->count_crtcs; i++)
+ assert_drm_crtcs_equal(d1->crtcs[i], d2->crtcs[i]);
+
+ compare_registers(d1, d2, step);
+}
+
+#define BUF_SIZE (8 << 20)
+
+/* to avoid stupid depencies on libdrm, copy&paste */
+struct local_drm_i915_gem_wait {
+ /** Handle of BO we shall wait on */
+ __u32 bo_handle;
+ __u32 flags;
+ /** Number of nanoseconds to wait, Returns time remaining. */
+ __u64 timeout_ns;
+};
+#define WAIT_IOCTL DRM_IOWR(DRM_COMMAND_BASE + 0x2c, struct local_drm_i915_gem_wait)
+
+static int gem_bo_wait_timeout(int fd, uint32_t handle, uint64_t *timeout_ns)
+{
+ struct local_drm_i915_gem_wait wait;
+ int ret;
+
+ assert(timeout_ns);
+
+ wait.bo_handle = handle;
+ wait.timeout_ns = *timeout_ns;
+ wait.flags = 0;
+ ret = drmIoctl(fd, WAIT_IOCTL, &wait);
+ *timeout_ns = wait.timeout_ns;
+
+ return ret ? -errno : 0;
+}
+
+static void test_batch(struct mode_set_data *data)
+{
+ uint64_t timeout = 1000 * 1000 * 1000 * 2;
+ drm_intel_bo *dst;
+
+ dst = drm_intel_bo_alloc(data->bufmgr, "dst", BUF_SIZE, 4096);
+ if (gem_bo_wait_timeout(drm_fd, dst->handle, &timeout) == -EINVAL)
+ printf("Kernel doesn't support wait_timeout\n");
+}
+
+int main(int argc, char *argv[])
+{
+ struct mode_set_data ms_data;
+ struct compare_data pre_pc8, during_pc8, post_pc8;
+ int msr_fd;
+ bool skip_zero_pc8_check = false;
+
+ if (argc > 1) {
+ /* With this option we can test/debug/develop the tool without
+ * needing to reboot every time. */
+ if (strcmp(argv[1], "--skip-zero-pc8-check") == 0)
+ skip_zero_pc8_check = true;
+ }
+
+ drm_fd = drm_open_any();
+ assert(drm_fd > 0);
+
+ init_mode_set_data(&ms_data);
+
+ if (!IS_HASWELL(ms_data.devid)) {
+ printf("PC8+ feature only supported on Haswell.\n");
+ return 77;
+ }
+
+ msr_fd = open("/dev/cpu/0/msr", O_RDONLY);
+ assert(msr_fd != -1);
+
+ /* Make sure the machine still didn't enter PC8+, otherwise we won't be
+ * able to really compare pre-PC8+ with post-PC8+. */
+ printf("Pre-PC8+\n");
+ assert(skip_zero_pc8_check || pc8_plus_residency_is_zero(msr_fd));
+ get_drm_info(&pre_pc8);
+ test_batch(&ms_data);
+ assert(skip_zero_pc8_check || pc8_plus_residency_is_zero(msr_fd));
+
+ printf("PC8+\n");
+ disable_all_screens(&ms_data);
+ sleep(1);
+
+ assert(pc8_plus_residency_changed(msr_fd, 10));
+ get_drm_info(&during_pc8);
+ test_batch(&ms_data);
+ assert(pc8_plus_residency_changed(msr_fd, 10));
+
+ assert_drm_infos_equal(&pre_pc8, &during_pc8, STEP_RESET);
+
+ printf("Post-PC8+\n");
+ enable_one_screen(&ms_data);
+ sleep(1);
+
+ assert(!pc8_plus_residency_changed(msr_fd, 5));
+ get_drm_info(&post_pc8);
+ test_batch(&ms_data);
+ assert(!pc8_plus_residency_changed(msr_fd, 5));
+
+ assert_drm_infos_equal(&pre_pc8, &post_pc8, STEP_RESTORED);
+
+ free_drm_info(&pre_pc8);
+ free_drm_info(&during_pc8);
+ free_drm_info(&post_pc8);
+ fini_mode_set_data(&ms_data);
+ close(msr_fd);
+ drmClose(drm_fd);
+
+ printf("Done!\n");
+ return 0;
+}
--
1.8.1.2
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