tests/kms: Move Intel specific kms tests to i915 directory

As KMS tests on IGT are officially supported on multiple SoCs
and there is an active development on it. So, KMS tests are
meant to be generic and if we need to test few things specific
to Intel, we can use igt_require_intel(). But if the whole test
is Intel specific, then the best place for the test would be
tests/i915.

This patch will
* Move all Intel specific kms tests to tests/i915 directory.
* Update the tests those are generic but still open the driver
  as 'drm_open_driver_master(DRIVER_INTEL);'.

V2:
* Few more tests
V3:
* Remove cleanups (will submit separate patch later)
* Move few more tests to i915 dir (Karthik)
V4:
* Move kms_big_joiner.c to i915 dir (Karthik)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Mark Yacoub <markyacoub@chromium.org>
Cc: Petri Latvala <petri.latvala@intel.com>
Cc: Vidya Srinivas <vidya.srinivas@intel.com>
Cc: Karthik B S <karthik.b.s@intel.com>
Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem@intel.com>
Reviewed-by: Mark Yacoub <markyacoub@chromium.org>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Reviewed-by: Karthik B S <karthik.b.s@intel.com>

1 files changed, 441 insertions, 0 deletions

diff --git a/tests/i915/kms_fbcon_fbt.c b/tests/i915/kms_fbcon_fbt.c
new file mode 100644
index 00000000..98c452c4
--- /dev/null
+++ b/tests/i915/kms_fbcon_fbt.c
@@ -0,0 +1,441 @@
+/*
+ * 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: Paulo Zanoni <paulo.r.zanoni@intel.com>
+ *
+ */
+
+#include "igt.h"
+#include "igt_device.h"
+#include "igt_psr.h"
+#include "igt_sysfs.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+
+IGT_TEST_DESCRIPTION("Test the relationship between fbcon and the frontbuffer "
+		     "tracking infrastructure.");
+
+#define MAX_CONNECTORS 32
+
+struct drm_info {
+	int fd, debugfs_fd;
+	struct igt_fb fb;
+	drmModeResPtr res;
+	drmModeConnectorPtr connectors[MAX_CONNECTORS];
+};
+
+static void wait_user(const char *msg)
+{
+	igt_info("%s\n", msg);
+	igt_debug_wait_for_keypress("fbt");
+}
+
+static bool fbc_supported_on_chipset(int device, int debugfs_fd)
+{
+	char buf[128];
+	int ret;
+
+	ret = igt_debugfs_simple_read(debugfs_fd, "i915_fbc_status",
+				      buf, sizeof(buf));
+	if (ret < 0)
+		return false;
+
+	return !strstr(buf, "FBC unsupported on this chipset\n");
+}
+
+static bool connector_can_fbc(drmModeConnectorPtr connector)
+{
+	return true;
+}
+
+static void fbc_print_status(int debugfs_fd)
+{
+	static char buf[128];
+
+	igt_debugfs_simple_read(debugfs_fd, "i915_fbc_status", buf,
+				sizeof(buf));
+	igt_debug("FBC status: %s\n", buf);
+}
+
+static bool fbc_check_status(int debugfs_fd, bool enabled)
+{
+	char buf[128];
+
+	igt_debugfs_simple_read(debugfs_fd, "i915_fbc_status", buf,
+				sizeof(buf));
+	if (enabled)
+		return strstr(buf, "FBC enabled\n");
+	else
+		return strstr(buf, "FBC disabled");
+}
+
+static bool fbc_wait_until_enabled(int debugfs_fd)
+{
+	bool r = igt_wait(fbc_check_status(debugfs_fd, true), 5000, 1);
+	fbc_print_status(debugfs_fd);
+	return r;
+}
+
+static bool fbc_is_disabled(int debugfs_fd)
+{
+	bool r = fbc_check_status(debugfs_fd, false);
+
+	fbc_print_status(debugfs_fd);
+	return r;
+}
+
+static bool fbc_wait_until_disabled(int debugfs_fd)
+{
+	bool r = igt_wait(fbc_check_status(debugfs_fd, false), 5000, 1);
+	fbc_print_status(debugfs_fd);
+	return r;
+}
+
+static bool fbc_check_cursor_blinking(struct drm_info *drm)
+{
+	igt_pipe_crc_t *pipe_crc;
+	igt_crc_t crc[2];
+	bool ret;
+	int i;
+
+	pipe_crc = igt_pipe_crc_new(drm->fd, PIPE_A, INTEL_PIPE_CRC_SOURCE_AUTO);
+
+	igt_pipe_crc_start(pipe_crc);
+	igt_pipe_crc_drain(pipe_crc);
+
+	for (i = 0; i < 60; i++) {
+		igt_pipe_crc_get_single(pipe_crc, &crc[i % 2]);
+
+		if (i > 0) {
+			ret = igt_find_crc_mismatch(&crc[0], &crc[1], NULL);
+			if (ret)
+				break;
+		}
+	}
+	igt_pipe_crc_stop(pipe_crc);
+	igt_pipe_crc_free(pipe_crc);
+
+	return ret;
+}
+
+static bool fbc_wait_until_update(struct drm_info *drm)
+{
+	/*
+	 * As now kernel enables FBC on linear surfaces on GEN9+, check if the
+	 * fbcon cursor blinking is causing the FBC to uncompress the
+	 * framebuffer.
+	 *
+	 * For older GENs FBC is still expected to be disabled as it still
+	 * relies on a tiled and fenceable framebuffer to track modifications.
+	 */
+	if (AT_LEAST_GEN(intel_get_drm_devid(drm->fd), 9)) {
+		if (!fbc_wait_until_enabled(drm->debugfs_fd))
+			return false;
+
+		return fbc_check_cursor_blinking(drm);
+	} else {
+		return fbc_wait_until_disabled(drm->debugfs_fd);
+	}
+}
+
+typedef bool (*connector_possible_fn)(drmModeConnectorPtr connector);
+
+static void set_mode_for_one_screen(struct drm_info *drm,
+				    connector_possible_fn connector_possible)
+{
+	int i, rc;
+	uint32_t crtc_id;
+	drmModeModeInfoPtr mode;
+	uint32_t buffer_id;
+	drmModeConnectorPtr c = NULL;
+
+	for (i = 0; i < drm->res->count_connectors; i++) {
+		c = drm->connectors[i];
+
+		if (c->connection == DRM_MODE_CONNECTED && c->count_modes &&
+		    connector_possible(c)) {
+			mode = &c->modes[0];
+			break;
+		}
+	}
+	igt_require_f(i < drm->res->count_connectors,
+		      "No connector available\n");
+
+	crtc_id = kmstest_find_crtc_for_connector(drm->fd, drm->res, c, 0);
+
+	buffer_id = igt_create_fb(drm->fd, mode->hdisplay, mode->vdisplay,
+				  DRM_FORMAT_XRGB8888,
+				  I915_FORMAT_MOD_X_TILED, &drm->fb);
+	igt_draw_fill_fb(drm->fd, &drm->fb, 0xFF);
+
+	igt_info("Setting %dx%d mode for %s connector\n",
+		 mode->hdisplay, mode->vdisplay,
+		 kmstest_connector_type_str(c->connector_type));
+
+	rc = drmModeSetCrtc(drm->fd, crtc_id, buffer_id, 0, 0,
+			    &c->connector_id, 1, mode);
+	igt_assert_eq(rc, 0);
+}
+
+static bool connector_can_psr(drmModeConnectorPtr connector)
+{
+	return (connector->connector_type == DRM_MODE_CONNECTOR_eDP);
+}
+
+static void psr_print_status(int debugfs_fd)
+{
+	static char buf[PSR_STATUS_MAX_LEN];
+
+	igt_debugfs_simple_read(debugfs_fd, "i915_edp_psr_status", buf,
+				sizeof(buf));
+	igt_debug("PSR status: %s\n", buf);
+}
+
+static bool psr_wait_until_enabled(int debugfs_fd)
+{
+	bool r = psr_wait_entry(debugfs_fd, PSR_MODE_1);
+
+	psr_print_status(debugfs_fd);
+	return r;
+}
+
+static bool psr_is_disabled(int debugfs_fd)
+{
+	bool r = psr_disabled_check(debugfs_fd);
+
+	psr_print_status(debugfs_fd);
+	return r;
+}
+
+static bool psr_supported_on_chipset(int device, int debugfs_fd)
+{
+	return psr_sink_support(device, debugfs_fd, PSR_MODE_1);
+}
+
+static bool psr_wait_until_update(struct drm_info *drm)
+{
+	return psr_long_wait_update(drm->debugfs_fd, PSR_MODE_1);
+}
+
+static void disable_features(int device, int debugfs_fd)
+{
+	igt_set_module_param_int(device, "enable_fbc", 0);
+	if (psr_sink_support(device, debugfs_fd, PSR_MODE_1))
+		psr_disable(device, debugfs_fd);
+}
+
+static inline void fbc_modparam_enable(int device, int debugfs_fd)
+{
+	igt_set_module_param_int(device, "enable_fbc", 1);
+}
+
+static inline void psr_debugfs_enable(int device, int debugfs_fd)
+{
+	psr_enable(device, debugfs_fd, PSR_MODE_1);
+}
+
+static void fbc_skips_on_fbcon(int debugfs_fd)
+{
+	const char *reasons[] = {
+		"incompatible mode",
+		"mode too large for compression",
+		"framebuffer not tiled or fenced",
+		"pixel format is invalid",
+		"rotation unsupported",
+		"tiling unsupported",
+		"framebuffer stride not supported",
+		"per-pixel alpha blending is incompatible with FBC",
+		"pixel rate is too big",
+		"CFB requirements changed",
+		"plane Y offset is misaligned",
+		"plane height + offset is non-modulo of 4"
+	};
+	bool skip = false;
+	char buf[128];
+	int i;
+
+	igt_debugfs_simple_read(debugfs_fd, "i915_fbc_status", buf, sizeof(buf));
+	if (strstr(buf, "FBC enabled\n"))
+		return;
+
+	for (i = 0; skip == false && i < ARRAY_SIZE(reasons); i++)
+		skip = strstr(buf, reasons[i]);
+
+	if (skip)
+		igt_skip("fbcon modeset is not compatible with FBC\n");
+}
+
+static void psr_skips_on_fbcon(int debugfs_fd)
+{
+	/*
+	 * Unless fbcon enables interlaced mode all other PSR restrictions
+	 * will be caught and skipped in supported_on_chipset() hook.
+	 * As PSR don't expose in debugfs why it is not enabling for now
+	 * not checking not even if it was not enabled because of interlaced
+	 * mode, if some day it happens changes will be needed first.
+	 */
+}
+
+struct feature {
+	bool (*supported_on_chipset)(int device, int debugfs_fd);
+	bool (*wait_until_enabled)(int debugfs_fd);
+	bool (*is_disabled)(int debugfs_fd);
+	bool (*wait_until_update)(struct drm_info *drm);
+	bool (*connector_possible_fn)(drmModeConnectorPtr connector);
+	void (*enable)(int device, int debugfs_fd);
+	/* skip test if feature can't be enabled due fbcon modeset */
+	void (*skips_on_fbcon)(int debugfs_fd);
+} fbc = {
+	.supported_on_chipset = fbc_supported_on_chipset,
+	.wait_until_enabled = fbc_wait_until_enabled,
+	.is_disabled = fbc_is_disabled,
+	.wait_until_update = fbc_wait_until_update,
+	.connector_possible_fn = connector_can_fbc,
+	.enable = fbc_modparam_enable,
+	.skips_on_fbcon = fbc_skips_on_fbcon,
+}, psr = {
+	.supported_on_chipset = psr_supported_on_chipset,
+	.wait_until_enabled = psr_wait_until_enabled,
+	.is_disabled = psr_is_disabled,
+	.wait_until_update = psr_wait_until_update,
+	.connector_possible_fn = connector_can_psr,
+	.enable = psr_debugfs_enable,
+	.skips_on_fbcon = psr_skips_on_fbcon,
+};
+
+static void restore_fbcon(struct drm_info *drm)
+{
+	kmstest_unset_all_crtcs(drm->fd, drm->res);
+	igt_remove_fb(drm->fd, &drm->fb);
+	igt_device_drop_master(drm->fd);
+	kmstest_set_vt_text_mode();
+}
+
+static void subtest(struct drm_info *drm, struct feature *feature, bool suspend)
+{
+	igt_device_set_master(drm->fd);
+	kmstest_set_vt_graphics_mode();
+
+	igt_require(feature->supported_on_chipset(drm->fd, drm->debugfs_fd));
+
+	disable_features(drm->fd, drm->debugfs_fd);
+	feature->enable(drm->fd, drm->debugfs_fd);
+
+	kmstest_unset_all_crtcs(drm->fd, drm->res);
+	wait_user("Modes unset.");
+	igt_assert(feature->is_disabled(drm->debugfs_fd));
+
+	set_mode_for_one_screen(drm, feature->connector_possible_fn);
+	wait_user("Screen set.");
+	igt_assert(feature->wait_until_enabled(drm->debugfs_fd));
+
+	if (suspend) {
+		igt_system_suspend_autoresume(SUSPEND_STATE_MEM,
+					      SUSPEND_TEST_NONE);
+		sleep(5);
+		igt_assert(feature->wait_until_enabled(drm->debugfs_fd));
+	}
+
+	restore_fbcon(drm);
+
+	/* Wait for fbcon to restore itself. */
+	sleep(3);
+
+	wait_user("Back to fbcon.");
+	feature->skips_on_fbcon(drm->debugfs_fd);
+	igt_assert(feature->wait_until_update(drm));
+
+	if (suspend) {
+		igt_system_suspend_autoresume(SUSPEND_STATE_MEM,
+					      SUSPEND_TEST_NONE);
+		sleep(5);
+		igt_assert(feature->wait_until_update(drm));
+	}
+}
+
+static void setup_environment(struct drm_info *drm)
+{
+	int i;
+
+	drm->fd = drm_open_driver_master(DRIVER_INTEL);
+	igt_require(drm->fd >= 0);
+	drm->debugfs_fd = igt_debugfs_dir(drm->fd);
+	igt_require(drm->debugfs_fd >= 0);
+
+	drm->res = drmModeGetResources(drm->fd);
+	igt_require(drm->res);
+	igt_assert(drm->res->count_connectors <= MAX_CONNECTORS);
+
+	for (i = 0; i < drm->res->count_connectors; i++)
+		drm->connectors[i] = drmModeGetConnectorCurrent(drm->fd,
+						drm->res->connectors[i]);
+
+	/*
+	 * igt_main()->igt_subtest_init_parse_opts()->common_init() disables the
+	 * fbcon bind, so to test it is necessary enable it again
+	 */
+	bind_fbcon(true);
+	fbcon_blink_enable(true);
+}
+
+static void teardown_environment(struct drm_info *drm)
+{
+	int i;
+
+	for (i = 0; i < drm->res->count_connectors; i++)
+		drmModeFreeConnector(drm->connectors[i]);
+
+	drmModeFreeResources(drm->res);
+	close(drm->debugfs_fd);
+	close(drm->fd);
+	kmstest_restore_vt_mode();
+}
+
+igt_main
+{
+	struct drm_info drm = { .fd = -1 };
+
+	igt_fixture
+		setup_environment(&drm);
+
+	igt_describe("Test the relationship between fbcon and the frontbuffer "
+		     "tracking infrastructure with fbc enabled.");
+	igt_subtest("fbc")
+		subtest(&drm, &fbc, false);
+	igt_describe("Test the relationship between fbcon and the frontbuffer "
+		     "tracking infrastructure with psr enabled.");
+	igt_subtest("psr")
+		subtest(&drm, &psr, false);
+	igt_describe("Suspend test to validate  the relationship between fbcon and the frontbuffer "
+		     "tracking infrastructure with fbc enabled.");
+	igt_subtest("fbc-suspend")
+		subtest(&drm, &fbc, true);
+	igt_describe("Suspend test to validate the relationship between fbcon and the frontbuffer "
+		     "tracking infrastructure with psr enabled.");
+	igt_subtest("psr-suspend")
+		subtest(&drm, &psr, true);
+
+	igt_fixture
+		teardown_environment(&drm);
+}