Split drrs handling into library to be used by other testcases as well.
v3: Add library function descriptions
v2: Moved into libigt instead of static kms_drrs_helper
Signed-off-by: Jouni Högander <jouni.hogander at intel.com>
---
lib/i915/intel_drrs.c | 133 ++++++++++++++++++++++++++
lib/i915/intel_drrs.h | 17 ++++
lib/meson.build | 1 +
tests/i915/kms_frontbuffer_tracking.c | 83 ++--------------
4 files changed, 158 insertions(+), 76 deletions(-)
create mode 100644 lib/i915/intel_drrs.c
create mode 100644 lib/i915/intel_drrs.h
diff --git a/lib/i915/intel_drrs.c b/lib/i915/intel_drrs.c
new file mode 100644
index 00000000..2f83e139
--- /dev/null
+++ b/lib/i915/intel_drrs.c
@@ -0,0 +1,133 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#include <fcntl.h>
+
+#include "igt.h"
+#include "igt_sysfs.h"
+
+#include "intel_drrs.h"
+
+/**
+ * intel_is_drrs_supported:
+ * @device: fd of the device
+ * @pipe: Display pipe
+ *
+ * Check if DRRS is supported on given pipe.
+ *
+ * Returns:
+ * true if DRRS is supported and false otherwise.
+ */
+bool intel_is_drrs_supported(int device, enum pipe pipe)
+{
+ char buf[256];
+ int dir;
+
+ dir = igt_debugfs_pipe_dir(device, pipe, O_DIRECTORY);
+ igt_require_fd(dir);
+ igt_debugfs_simple_read(dir, "i915_drrs_status", buf, sizeof(buf));
+ close(dir);
+ if (*buf == '\0')
+ return false;
+
+ return !strcasestr(buf, "DRRS enabled:");
+}
+
+/**
+ * intel_output_has_drrs
+ * @device: fd of the device
+ * @output: Display output
+ *
+ * Check if drrs used on given output.
+ *
+ * Returns:
+ * true if DRRS is used and false otherwise.
+ */
+bool intel_output_has_drrs(int device, igt_output_t *output)
+{
+ char buf[256];
+ int dir;
+
+ dir = igt_debugfs_connector_dir(device, output->name, O_DIRECTORY);
+ igt_require_fd(dir);
+ igt_debugfs_simple_read(dir, "i915_drrs_type", buf, sizeof(buf));
+ close(dir);
+
+ return strstr(buf, "seamless");
+}
+
+static void drrs_set(int device, enum pipe pipe, unsigned int val)
+{
+ char buf[2];
+ int dir, ret;
+
+ igt_debug("Manually %sabling DRRS. %u\n", val ? "en" : "dis", val);
+ snprintf(buf, sizeof(buf), "%d", val);
+
+ dir = igt_debugfs_pipe_dir(device, pipe, O_DIRECTORY);
+ igt_require_fd(dir);
+ ret = igt_sysfs_write(dir, "i915_drrs_ctl", buf, sizeof(buf) - 1);
+
+ /*
+ * drrs_enable() is called on DRRS capable platform only,
+ * whereas drrs_disable() is called on all platforms.
+ * So handle the failure of debugfs_write only for drrs_enable().
+ */
+ if (val)
+ igt_assert_f(ret == (sizeof(buf) - 1), "debugfs_write failed");
+}
+
+/**
+ * intel_drrs_enable:
+ * @device: fd of the device
+ * @pipe: Display pipe
+ *
+ * Enable DRRS on given pipe
+ *
+ * Returns:
+ * none
+ */
+void intel_drrs_enable(int device, enum pipe pipe)
+{
+ drrs_set(device, pipe, 1);
+}
+
+/**
+ * intel_drrs_disable:
+ * @device: fd of the device
+ * @pipe: Display pipe
+ *
+ * Disable DRRS on given pipe
+ *
+ * Returns:
+ * none
+ */
+void intel_drrs_disable(int device, enum pipe pipe)
+{
+ drrs_set(device, pipe, 0);
+}
+
+/**
+ * intel_is_drrs_inactive:
+ * @device: fd of the device
+ * @pipe: Display pipe
+ *
+ * Check if drrs is inactive on given pipe
+ *
+ * Returns:
+ * true if inactive and false otherwise
+ */
+bool intel_is_drrs_inactive(int device, enum pipe pipe)
+{
+ char buf[256];
+ int dir;
+
+ dir = igt_debugfs_pipe_dir(device, pipe, O_DIRECTORY);
+ igt_require_fd(dir);
+ igt_debugfs_simple_read(dir, "i915_drrs_status", buf, sizeof(buf));
+ close(dir);
+
+ return strstr(buf, "DRRS active: no");
+}
diff --git a/lib/i915/intel_drrs.h b/lib/i915/intel_drrs.h
new file mode 100644
index 00000000..d4d27a5f
--- /dev/null
+++ b/lib/i915/intel_drrs.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef INTEL_DRRS_H
+#define INTEL_DRRS_H
+
+#include "igt.h"
+
+bool intel_is_drrs_supported(int device, enum pipe pipe);
+bool intel_output_has_drrs(int device, igt_output_t *output);
+void intel_drrs_enable(int device, enum pipe pipe);
+void intel_drrs_disable(int device, enum pipe pipe);
+bool intel_is_drrs_inactive(int device, enum pipe pipe);
+
+#endif
diff --git a/lib/meson.build b/lib/meson.build
index e3916096..64abc76b 100644
--- a/lib/meson.build
+++ b/lib/meson.build
@@ -12,6 +12,7 @@ lib_sources = [
'i915/gem_mman.c',
'i915/gem_vm.c',
'i915/intel_decode.c',
+ 'i915/intel_drrs.c',
'i915/intel_fbc.c',
'i915/intel_memory_region.c',
'i915/intel_mocs.c',
diff --git a/tests/i915/kms_frontbuffer_tracking.c b/tests/i915/kms_frontbuffer_tracking.c
index f5da0f24..4669e0d4 100644
--- a/tests/i915/kms_frontbuffer_tracking.c
+++ b/tests/i915/kms_frontbuffer_tracking.c
@@ -32,6 +32,7 @@
#include "i915/gem.h"
#include "i915/gem_create.h"
+#include "i915/intel_drrs.h"
#include "i915/intel_fbc.h"
#include "igt.h"
#include "igt_sysfs.h"
@@ -746,54 +747,10 @@ static void __debugfs_read_crtc(const char *param, char *buf, int len)
close(dir);
}
-static int __debugfs_write_crtc(const char *param, const char *buf, int len)
-{
- int dir, ret;
- enum pipe pipe;
-
- pipe = prim_mode_params.pipe;
- dir = igt_debugfs_pipe_dir(drm.fd, pipe, O_DIRECTORY);
- igt_require_fd(dir);
- ret = igt_sysfs_write(dir, param, buf, len - 1);
- close(dir);
-
- return ret;
-}
-
-static void __debugfs_read_connector(const char *param, char *buf, int len)
-{
- int dir;
- igt_output_t *output;
-
- output = prim_mode_params.output;
- dir = igt_debugfs_connector_dir(drm.fd, output->name, O_DIRECTORY);
- igt_require_fd(dir);
- igt_debugfs_simple_read(dir, param, buf, len);
- close(dir);
-}
-
#define debugfs_read_crtc(p, arr) __debugfs_read_crtc(p, arr, sizeof(arr))
#define debugfs_write_crtc(p, arr) __debugfs_write_crtc(p, arr, sizeof(arr))
#define debugfs_read_connector(p, arr) __debugfs_read_connector(p, arr, sizeof(arr))
-static void drrs_set(unsigned int val)
-{
- char buf[2];
- int ret;
-
- igt_debug("Manually %sabling DRRS. %u\n", val ? "en" : "dis", val);
- snprintf(buf, sizeof(buf), "%d", val);
- ret = debugfs_write_crtc("i915_drrs_ctl", buf);
-
- /*
- * drrs_enable() is called on DRRS capable platform only,
- * whereas drrs_disable() is called on all platforms.
- * So handle the failure of debugfs_write only for drrs_enable().
- */
- if (val)
- igt_assert_f(ret == (sizeof(buf) - 1), "debugfs_write failed");
-}
-
static bool is_drrs_high(void)
{
char buf[MAX_DRRS_STATUS_BUF_LEN];
@@ -810,22 +767,6 @@ static bool is_drrs_low(void)
return strstr(buf, "DRRS refresh rate: low");
}
-static bool is_drrs_supported(void)
-{
- char buf[MAX_DRRS_STATUS_BUF_LEN];
-
- debugfs_read_crtc("i915_drrs_status", buf);
- return strcasestr(buf, "DRRS enabled:");
-}
-
-static bool is_drrs_inactive(void)
-{
- char buf[MAX_DRRS_STATUS_BUF_LEN];
-
- debugfs_read_crtc("i915_drrs_status", buf);
- return strstr(buf, "DRRS active: no");
-}
-
static void drrs_print_status(void)
{
char buf[MAX_DRRS_STATUS_BUF_LEN];
@@ -834,14 +775,6 @@ static void drrs_print_status(void)
igt_info("DRRS STATUS :\n%s\n", buf);
}
-static bool output_has_drrs(void)
-{
- char buf[MAX_DRRS_STATUS_BUF_LEN];
-
- debugfs_read_connector("i915_drrs_type", buf);
- return strstr(buf, "seamless");
-}
-
static struct timespec fbc_get_last_action(void)
{
struct timespec ret = { 0, 0 };
@@ -955,9 +888,6 @@ static bool drrs_wait_until_rr_switch_to_low(void)
return igt_wait(is_drrs_low(), 5000, 1);
}
-#define drrs_enable() drrs_set(1)
-#define drrs_disable() drrs_set(0)
-
static struct rect pat1_get_rect(struct fb_region *fb, int r)
{
struct rect rect;
@@ -1159,8 +1089,9 @@ static bool disable_features(const struct test_mode *t)
if (t->feature == FEATURE_DEFAULT)
return false;
- drrs_disable();
intel_fbc_disable(drm.fd);
+ intel_drrs_disable(drm.fd, prim_mode_params.pipe);
+
return psr.can_test ? psr_disable(drm.fd, drm.debugfs) : false;
}
@@ -1437,12 +1368,12 @@ static void teardown_psr(void)
static void setup_drrs(void)
{
- if (!output_has_drrs()) {
+ if (!intel_output_has_drrs(drm.fd, prim_mode_params.output)) {
igt_info("Can't test DRRS: no usable screen.\n");
return;
}
- if (!is_drrs_supported()) {
+ if (!intel_is_drrs_supported(drm.fd, prim_mode_params.pipe)) {
igt_info("Can't test DRRS: Not supported.\n");
return;
}
@@ -1599,7 +1530,7 @@ static void do_status_assertions(int flags)
igt_assert_f(false, "DRRS LOW\n");
}
} else if (flags & ASSERT_DRRS_INACTIVE) {
- if (!is_drrs_inactive()) {
+ if (!intel_is_drrs_inactive(drm.fd, prim_mode_params.pipe)) {
drrs_print_status();
igt_assert_f(false, "DRRS INACTIVE\n");
}
@@ -1764,7 +1695,7 @@ static bool enable_features_for_test(const struct test_mode *t)
if (t->feature & FEATURE_PSR)
ret = psr_enable(drm.fd, drm.debugfs, PSR_MODE_1);
if (t->feature & FEATURE_DRRS)
- drrs_enable();
+ intel_drrs_enable(drm.fd, prim_mode_params.pipe);
return ret;
}
--
2.34.1