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kms: Add update test API

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This API can be used to construct a MetaKmsUpdate with plane assignments
that in isolation will be tested against the current KMS state. How it
is tested depends on the KMS implementation; in the simple / legacy KMS
backend, the tests are identical to the current scanout requirements
(dimension, stride, format, modifiers, all must match), and with atomic
KMS, it uses the TEST_ONLY on a real constructed atomic mode setting
commit.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2146>
This commit is contained in:
Jonas Ådahl
2021-12-08 21:20:52 +01:00
committed by Marge Bot
parent 4bcd4a6fab
commit a14923e993
6 changed files with 145 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

89
src/backends/native/meta-kms-impl-device-simple.c
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@ -41,6 +41,12 @@ typedef struct _CachedModeSet
{
GList *connectors;
drmModeModeInfo *drm_mode;
int width;
int height;
int stride;
uint32_t format;
uint64_t modifier;
} CachedModeSet;
struct _MetaKmsImplDeviceSimple
@ -259,14 +265,21 @@ process_connector_update (MetaKmsImplDevice *impl_device,
static CachedModeSet *
cached_mode_set_new (GList *connectors,
const drmModeModeInfo *drm_mode)
const drmModeModeInfo *drm_mode,
MetaDrmBuffer *buffer)
{
CachedModeSet *cached_mode_set;
cached_mode_set = g_new0 (CachedModeSet, 1);
*cached_mode_set = (CachedModeSet) {
.connectors = g_list_copy (connectors),
.drm_mode = g_memdup2 (drm_mode, sizeof *drm_mode),
.width = meta_drm_buffer_get_width (buffer),
.height = meta_drm_buffer_get_height (buffer),
.stride = meta_drm_buffer_get_stride (buffer),
.format = meta_drm_buffer_get_format (buffer),
.modifier = meta_drm_buffer_get_modifier (buffer),
};
return cached_mode_set;
@ -353,6 +366,7 @@ process_mode_set (MetaKmsImplDevice *impl_device,
g_autofree uint32_t *connectors = NULL;
int n_connectors;
MetaKmsPlaneAssignment *plane_assignment;
MetaDrmBuffer *buffer;
drmModeModeInfo *drm_mode;
uint32_t x, y;
uint32_t fb_id;
@ -363,7 +377,6 @@ process_mode_set (MetaKmsImplDevice *impl_device,
if (mode_set->mode)
{
MetaDrmBuffer *buffer;
GList *l;
drm_mode = g_alloca (sizeof *drm_mode);
@ -437,6 +450,7 @@ process_mode_set (MetaKmsImplDevice *impl_device,
}
else
{
buffer = NULL;
drm_mode = NULL;
x = y = 0;
n_connectors = 0;
@ -471,7 +485,8 @@ process_mode_set (MetaKmsImplDevice *impl_device,
g_hash_table_replace (impl_device_simple->cached_mode_sets,
crtc,
cached_mode_set_new (mode_set->connectors,
drm_mode));
drm_mode,
buffer));
}
else
{
@ -1397,6 +1412,71 @@ meta_kms_impl_device_simple_setup_drm_event_context (MetaKmsImplDevice *impl_dev
drm_event_context->page_flip_handler = page_flip_handler;
}
static MetaKmsFeedback *
perform_update_test (MetaKmsImplDevice *impl_device,
MetaKmsUpdate *update)
{
MetaKmsImplDeviceSimple *impl_device_simple =
META_KMS_IMPL_DEVICE_SIMPLE (impl_device);
GList *failed_planes = NULL;
GList *l;
for (l = meta_kms_update_get_plane_assignments (update); l; l = l->next)
{
MetaKmsPlaneAssignment *plane_assignment = l->data;
MetaKmsPlane *plane = plane_assignment->plane;
MetaKmsCrtc *crtc = plane_assignment->crtc;
MetaDrmBuffer *buffer = plane_assignment->buffer;
CachedModeSet *cached_mode_set;
if (!plane_assignment->crtc ||
!plane_assignment->buffer)
continue;
cached_mode_set = get_cached_mode_set (impl_device_simple,
plane_assignment->crtc);
if (!cached_mode_set)
{
MetaKmsPlaneFeedback *plane_feedback;
plane_feedback =
meta_kms_plane_feedback_new_failed (plane, crtc,
"No existing mode set");
failed_planes = g_list_append (failed_planes, plane_feedback);
continue;
}
if (meta_drm_buffer_get_width (buffer) != cached_mode_set->width ||
meta_drm_buffer_get_height (buffer) != cached_mode_set->height ||
meta_drm_buffer_get_stride (buffer) != cached_mode_set->stride ||
meta_drm_buffer_get_format (buffer) != cached_mode_set->format ||
meta_drm_buffer_get_modifier (buffer) != cached_mode_set->modifier)
{
MetaKmsPlaneFeedback *plane_feedback;
plane_feedback =
meta_kms_plane_feedback_new_failed (plane, crtc,
"Incompatible buffer");
failed_planes = g_list_append (failed_planes, plane_feedback);
continue;
}
}
if (failed_planes)
{
GError *error;
error = g_error_new_literal (G_IO_ERROR,
G_IO_ERROR_FAILED,
"One or more buffers incompatible");
return meta_kms_feedback_new_failed (failed_planes, error);
}
else
{
return meta_kms_feedback_new_passed (NULL);
}
}
static MetaKmsFeedback *
meta_kms_impl_device_simple_process_update (MetaKmsImplDevice *impl_device,
MetaKmsUpdate *update,
@ -1409,6 +1489,9 @@ meta_kms_impl_device_simple_process_update (MetaKmsImplDevice *impl_device,
"[simple] Processing update %" G_GUINT64_FORMAT,
meta_kms_update_get_sequence_number (update));
if (flags & META_KMS_UPDATE_FLAG_TEST_ONLY)
return perform_update_test (impl_device, update);
if (meta_kms_update_is_power_save (update))
{
if (!process_power_save (impl_device, &error))