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weston/libweston/backend-drm/kms.c

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/*
* Copyright © 2008-2011 Kristian Høgsberg
* Copyright © 2011 Intel Corporation
* Copyright © 2017, 2018 Collabora, Ltd.
* Copyright © 2017, 2018 General Electric Company
* Copyright (c) 2018 DisplayLink (UK) Ltd.
*
* 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.
*/
#include "config.h"
#include <stdint.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <libweston/libweston.h>
#include <libweston/backend-drm.h>
#include "shared/helpers.h"
#include "shared/weston-drm-fourcc.h"
#include "drm-internal.h"
#include "pixel-formats.h"
#include "presentation-time-server-protocol.h"
struct drm_property_enum_info plane_type_enums[] = {
[WDRM_PLANE_TYPE_PRIMARY] = {
.name = "Primary",
},
[WDRM_PLANE_TYPE_OVERLAY] = {
.name = "Overlay",
},
[WDRM_PLANE_TYPE_CURSOR] = {
.name = "Cursor",
},
};
const struct drm_property_info plane_props[] = {
[WDRM_PLANE_TYPE] = {
.name = "type",
.enum_values = plane_type_enums,
.num_enum_values = WDRM_PLANE_TYPE__COUNT,
},
[WDRM_PLANE_SRC_X] = { .name = "SRC_X", },
[WDRM_PLANE_SRC_Y] = { .name = "SRC_Y", },
[WDRM_PLANE_SRC_W] = { .name = "SRC_W", },
[WDRM_PLANE_SRC_H] = { .name = "SRC_H", },
[WDRM_PLANE_CRTC_X] = { .name = "CRTC_X", },
[WDRM_PLANE_CRTC_Y] = { .name = "CRTC_Y", },
[WDRM_PLANE_CRTC_W] = { .name = "CRTC_W", },
[WDRM_PLANE_CRTC_H] = { .name = "CRTC_H", },
[WDRM_PLANE_FB_ID] = { .name = "FB_ID", },
[WDRM_PLANE_CRTC_ID] = { .name = "CRTC_ID", },
[WDRM_PLANE_IN_FORMATS] = { .name = "IN_FORMATS" },
[WDRM_PLANE_IN_FENCE_FD] = { .name = "IN_FENCE_FD" },
[WDRM_PLANE_FB_DAMAGE_CLIPS] = { .name = "FB_DAMAGE_CLIPS" },
[WDRM_PLANE_ZPOS] = { .name = "zpos" },
};
struct drm_property_enum_info dpms_state_enums[] = {
[WDRM_DPMS_STATE_OFF] = {
.name = "Off",
},
[WDRM_DPMS_STATE_ON] = {
.name = "On",
},
[WDRM_DPMS_STATE_STANDBY] = {
.name = "Standby",
},
[WDRM_DPMS_STATE_SUSPEND] = {
.name = "Suspend",
},
};
struct drm_property_enum_info content_protection_enums[] = {
[WDRM_CONTENT_PROTECTION_UNDESIRED] = {
.name = "Undesired",
},
[WDRM_CONTENT_PROTECTION_DESIRED] = {
.name = "Desired",
},
[WDRM_CONTENT_PROTECTION_ENABLED] = {
.name = "Enabled",
},
};
struct drm_property_enum_info hdcp_content_type_enums[] = {
[WDRM_HDCP_CONTENT_TYPE0] = {
.name = "HDCP Type0",
},
[WDRM_HDCP_CONTENT_TYPE1] = {
.name = "HDCP Type1",
},
};
struct drm_property_enum_info panel_orientation_enums[] = {
[WDRM_PANEL_ORIENTATION_NORMAL] = { .name = "Normal", },
[WDRM_PANEL_ORIENTATION_UPSIDE_DOWN] = { .name = "Upside Down", },
[WDRM_PANEL_ORIENTATION_LEFT_SIDE_UP] = { .name = "Left Side Up", },
[WDRM_PANEL_ORIENTATION_RIGHT_SIDE_UP] = { .name = "Right Side Up", },
};
const struct drm_property_info connector_props[] = {
[WDRM_CONNECTOR_EDID] = { .name = "EDID" },
[WDRM_CONNECTOR_DPMS] = {
.name = "DPMS",
.enum_values = dpms_state_enums,
.num_enum_values = WDRM_DPMS_STATE__COUNT,
},
[WDRM_CONNECTOR_CRTC_ID] = { .name = "CRTC_ID", },
[WDRM_CONNECTOR_NON_DESKTOP] = { .name = "non-desktop", },
[WDRM_CONNECTOR_CONTENT_PROTECTION] = {
.name = "Content Protection",
.enum_values = content_protection_enums,
.num_enum_values = WDRM_CONTENT_PROTECTION__COUNT,
},
[WDRM_CONNECTOR_HDCP_CONTENT_TYPE] = {
.name = "HDCP Content Type",
.enum_values = hdcp_content_type_enums,
.num_enum_values = WDRM_HDCP_CONTENT_TYPE__COUNT,
},
[WDRM_CONNECTOR_PANEL_ORIENTATION] = {
.name = "panel orientation",
.enum_values = panel_orientation_enums,
.num_enum_values = WDRM_PANEL_ORIENTATION__COUNT,
},
};
const struct drm_property_info crtc_props[] = {
[WDRM_CRTC_MODE_ID] = { .name = "MODE_ID", },
[WDRM_CRTC_ACTIVE] = { .name = "ACTIVE", },
};
/**
* Mode for drm_pending_state_apply and co.
*/
enum drm_state_apply_mode {
DRM_STATE_APPLY_SYNC, /**< state fully processed */
DRM_STATE_APPLY_ASYNC, /**< state pending event delivery */
DRM_STATE_TEST_ONLY, /**< test if the state can be applied */
};
/**
* Get the current value of a KMS property
*
* Given a drmModeObjectGetProperties return, as well as the drm_property_info
* for the target property, return the current value of that property,
* with an optional default. If the property is a KMS enum type, the return
* value will be translated into the appropriate internal enum.
*
* If the property is not present, the default value will be returned.
*
* @param info Internal structure for property to look up
* @param props Raw KMS properties for the target object
* @param def Value to return if property is not found
*/
uint64_t
drm_property_get_value(struct drm_property_info *info,
const drmModeObjectProperties *props,
uint64_t def)
{
unsigned int i;
if (info->prop_id == 0)
return def;
for (i = 0; i < props->count_props; i++) {
unsigned int j;
if (props->props[i] != info->prop_id)
continue;
/* Simple (non-enum) types can return the value directly */
if (info->num_enum_values == 0)
return props->prop_values[i];
/* Map from raw value to enum value */
for (j = 0; j < info->num_enum_values; j++) {
if (!info->enum_values[j].valid)
continue;
if (info->enum_values[j].value != props->prop_values[i])
continue;
return j;
}
/* We don't have a mapping for this enum; return default. */
break;
}
return def;
}
/**
* Get the current range values of a KMS property
*
* Given a drmModeObjectGetProperties return, as well as the drm_property_info
* for the target property, return the current range values of that property,
*
* If the property is not present, or there's no it is not a prop range then
* NULL will be returned.
*
* @param info Internal structure for property to look up
* @param props Raw KMS properties for the target object
*/
uint64_t *
drm_property_get_range_values(struct drm_property_info *info,
const drmModeObjectProperties *props)
{
unsigned int i;
if (info->prop_id == 0)
return NULL;
for (i = 0; i < props->count_props; i++) {
if (props->props[i] != info->prop_id)
continue;
if (!(info->flags & DRM_MODE_PROP_RANGE) &&
!(info->flags & DRM_MODE_PROP_SIGNED_RANGE))
continue;
return info->range_values;
}
return NULL;
}
/**
* Cache DRM property values
*
* Update a per-object array of drm_property_info structures, given the
* DRM properties of the object.
*
* Call this every time an object newly appears (note that only connectors
* can be hotplugged), the first time it is seen, or when its status changes
* in a way which invalidates the potential property values (currently, the
* only case for this is connector hotplug).
*
* This updates the property IDs and enum values within the drm_property_info
* array.
*
* DRM property enum values are dynamic at runtime; the user must query the
* property to find out the desired runtime value for a requested string
* name. Using the 'type' field on planes as an example, there is no single
* hardcoded constant for primary plane types; instead, the property must be
* queried at runtime to find the value associated with the string "Primary".
*
* This helper queries and caches the enum values, to allow us to use a set
* of compile-time-constant enums portably across various implementations.
* The values given in enum_names are searched for, and stored in the
* same-indexed field of the map array.
*
* @param b DRM backend object
* @param src DRM property info array to source from
* @param info DRM property info array to copy into
* @param num_infos Number of entries in the source array
* @param props DRM object properties for the object
*/
void
drm_property_info_populate(struct drm_backend *b,
const struct drm_property_info *src,
struct drm_property_info *info,
unsigned int num_infos,
drmModeObjectProperties *props)
{
drmModePropertyRes *prop;
unsigned i, j;
for (i = 0; i < num_infos; i++) {
unsigned int j;
info[i].name = src[i].name;
info[i].prop_id = 0;
info[i].num_enum_values = src[i].num_enum_values;
if (src[i].num_enum_values == 0)
continue;
info[i].enum_values =
malloc(src[i].num_enum_values *
sizeof(*info[i].enum_values));
assert(info[i].enum_values);
for (j = 0; j < info[i].num_enum_values; j++) {
info[i].enum_values[j].name = src[i].enum_values[j].name;
info[i].enum_values[j].valid = false;
}
}
for (i = 0; i < props->count_props; i++) {
unsigned int k;
prop = drmModeGetProperty(b->drm.fd, props->props[i]);
if (!prop)
continue;
for (j = 0; j < num_infos; j++) {
if (!strcmp(prop->name, info[j].name))
break;
}
/* We don't know/care about this property. */
if (j == num_infos) {
#ifdef DEBUG
weston_log("DRM debug: unrecognized property %u '%s'\n",
prop->prop_id, prop->name);
#endif
drmModeFreeProperty(prop);
continue;
}
if (info[j].num_enum_values == 0 &&
(prop->flags & DRM_MODE_PROP_ENUM)) {
weston_log("DRM: expected property %s to not be an"
" enum, but it is; ignoring\n", prop->name);
drmModeFreeProperty(prop);
continue;
}
info[j].prop_id = props->props[i];
info[j].flags = prop->flags;
if (prop->flags & DRM_MODE_PROP_RANGE ||
prop->flags & DRM_MODE_PROP_SIGNED_RANGE) {
info[j].num_range_values = prop->count_values;
for (int i = 0; i < prop->count_values; i++)
info[j].range_values[i] = prop->values[i];
}
if (info[j].num_enum_values == 0) {
drmModeFreeProperty(prop);
continue;
}
if (!(prop->flags & DRM_MODE_PROP_ENUM)) {
weston_log("DRM: expected property %s to be an enum,"
" but it is not; ignoring\n", prop->name);
drmModeFreeProperty(prop);
info[j].prop_id = 0;
continue;
}
for (k = 0; k < info[j].num_enum_values; k++) {
int l;
for (l = 0; l < prop->count_enums; l++) {
if (!strcmp(prop->enums[l].name,
info[j].enum_values[k].name))
break;
}
if (l == prop->count_enums)
continue;
info[j].enum_values[k].valid = true;
info[j].enum_values[k].value = prop->enums[l].value;
}
drmModeFreeProperty(prop);
}
#ifdef DEBUG
for (i = 0; i < num_infos; i++) {
if (info[i].prop_id == 0)
weston_log("DRM warning: property '%s' missing\n",
info[i].name);
}
#endif
}
/**
* Free DRM property information
*
* Frees all memory associated with a DRM property info array and zeroes
* it out, leaving it usable for a further drm_property_info_update() or
* drm_property_info_free().
*
* @param info DRM property info array
* @param num_props Number of entries in array to free
*/
void
drm_property_info_free(struct drm_property_info *info, int num_props)
{
int i;
for (i = 0; i < num_props; i++)
free(info[i].enum_values);
memset(info, 0, sizeof(*info) * num_props);
}
static inline uint32_t *
formats_ptr(struct drm_format_modifier_blob *blob)
{
return (uint32_t *)(((char *)blob) + blob->formats_offset);
}
static inline struct drm_format_modifier *
modifiers_ptr(struct drm_format_modifier_blob *blob)
{
return (struct drm_format_modifier *)
(((char *)blob) + blob->modifiers_offset);
}
/**
* Populates the plane's formats array, using either the IN_FORMATS blob
* property (if available), or the plane's format list if not.
*/
int
drm_plane_populate_formats(struct drm_plane *plane, const drmModePlane *kplane,
const drmModeObjectProperties *props,
const bool use_modifiers)
{
unsigned i, j;
drmModePropertyBlobRes *blob = NULL;
struct drm_format_modifier_blob *fmt_mod_blob;
struct drm_format_modifier *blob_modifiers;
uint32_t *blob_formats;
uint32_t blob_id;
struct weston_drm_format *fmt;
int ret = 0;
if (!use_modifiers)
goto fallback;
blob_id = drm_property_get_value(&plane->props[WDRM_PLANE_IN_FORMATS],
props,
0);
if (blob_id == 0)
goto fallback;
blob = drmModeGetPropertyBlob(plane->backend->drm.fd, blob_id);
if (!blob)
goto fallback;
fmt_mod_blob = blob->data;
blob_formats = formats_ptr(fmt_mod_blob);
blob_modifiers = modifiers_ptr(fmt_mod_blob);
assert(kplane->count_formats == fmt_mod_blob->count_formats);
for (i = 0; i < fmt_mod_blob->count_formats; i++) {
fmt = weston_drm_format_array_add_format(&plane->formats,
blob_formats[i]);
if (!fmt) {
ret = -1;
goto out;
}
for (j = 0; j < fmt_mod_blob->count_modifiers; j++) {
struct drm_format_modifier *mod = &blob_modifiers[j];
if ((i < mod->offset) || (i > mod->offset + 63))
continue;
if (!(mod->formats & (1 << (i - mod->offset))))
continue;
ret = weston_drm_format_add_modifier(fmt, mod->modifier);
if (ret < 0)
goto out;
}
if (fmt->modifiers.size == 0)
weston_drm_format_array_remove_latest_format(&plane->formats);
}
out:
drmModeFreePropertyBlob(blob);
return ret;
fallback:
/* No IN_FORMATS blob available, so just use the old. */
for (i = 0; i < kplane->count_formats; i++) {
fmt = weston_drm_format_array_add_format(&plane->formats,
kplane->formats[i]);
if (!fmt)
return -1;
ret = weston_drm_format_add_modifier(fmt, DRM_FORMAT_MOD_INVALID);
if (ret < 0)
return -1;
}
return 0;
}
void
drm_output_set_gamma(struct weston_output *output_base,
uint16_t size, uint16_t *r, uint16_t *g, uint16_t *b)
{
int rc;
struct drm_output *output = to_drm_output(output_base);
struct drm_backend *backend =
to_drm_backend(output->base.compositor);
/* check */
if (output_base->gamma_size != size)
return;
rc = drmModeCrtcSetGamma(backend->drm.fd,
output->crtc->crtc_id,
size, r, g, b);
if (rc)
weston_log("set gamma failed: %s\n", strerror(errno));
}
/**
* Mark an output state as current on the output, i.e. it has been
* submitted to the kernel. The mode argument determines whether this
* update will be applied synchronously (e.g. when calling drmModeSetCrtc),
* or asynchronously (in which case we wait for events to complete).
*/
static void
drm_output_assign_state(struct drm_output_state *state,
enum drm_state_apply_mode mode)
{
struct drm_output *output = state->output;
struct drm_backend *b = to_drm_backend(output->base.compositor);
struct drm_plane_state *plane_state;
struct drm_head *head;
assert(!output->state_last);
if (mode == DRM_STATE_APPLY_ASYNC)
output->state_last = output->state_cur;
else
drm_output_state_free(output->state_cur);
wl_list_remove(&state->link);
wl_list_init(&state->link);
state->pending_state = NULL;
output->state_cur = state;
if (b->atomic_modeset && mode == DRM_STATE_APPLY_ASYNC) {
drm_debug(b, "\t[CRTC:%u] setting pending flip\n",
output->crtc->crtc_id);
output->atomic_complete_pending = true;
}
if (b->atomic_modeset &&
state->protection == WESTON_HDCP_DISABLE)
wl_list_for_each(head, &output->base.head_list, base.output_link)
weston_head_set_content_protection_status(&head->base,
WESTON_HDCP_DISABLE);
/* Replace state_cur on each affected plane with the new state, being
* careful to dispose of orphaned (but only orphaned) previous state.
* If the previous state is not orphaned (still has an output_state
* attached), it will be disposed of by freeing the output_state. */
wl_list_for_each(plane_state, &state->plane_list, link) {
struct drm_plane *plane = plane_state->plane;
if (plane->state_cur && !plane->state_cur->output_state)
drm_plane_state_free(plane->state_cur, true);
plane->state_cur = plane_state;
if (mode != DRM_STATE_APPLY_ASYNC) {
plane_state->complete = true;
continue;
}
if (b->atomic_modeset)
continue;
assert(plane->type != WDRM_PLANE_TYPE_OVERLAY);
if (plane->type == WDRM_PLANE_TYPE_PRIMARY)
output->page_flip_pending = true;
}
}
static void
drm_output_set_cursor(struct drm_output_state *output_state)
{
struct drm_output *output = output_state->output;
struct drm_backend *b = to_drm_backend(output->base.compositor);
struct drm_crtc *crtc = output->crtc;
struct drm_plane *plane = output->cursor_plane;
struct drm_plane_state *state;
uint32_t handle;
if (!plane)
return;
state = drm_output_state_get_existing_plane(output_state, plane);
if (!state)
return;
if (!state->fb) {
pixman_region32_fini(&plane->base.damage);
pixman_region32_init(&plane->base.damage);
drmModeSetCursor(b->drm.fd, crtc->crtc_id, 0, 0, 0);
return;
}
assert(state->fb == output->gbm_cursor_fb[output->current_cursor]);
assert(!plane->state_cur->output || plane->state_cur->output == output);
handle = output->gbm_cursor_handle[output->current_cursor];
if (plane->state_cur->fb != state->fb) {
if (drmModeSetCursor(b->drm.fd, crtc->crtc_id, handle,
b->cursor_width, b->cursor_height)) {
weston_log("failed to set cursor: %s\n",
strerror(errno));
goto err;
}
}
pixman_region32_fini(&plane->base.damage);
pixman_region32_init(&plane->base.damage);
if (drmModeMoveCursor(b->drm.fd, crtc->crtc_id,
state->dest_x, state->dest_y)) {
weston_log("failed to move cursor: %s\n", strerror(errno));
goto err;
}
return;
err:
b->cursors_are_broken = true;
drmModeSetCursor(b->drm.fd, crtc->crtc_id, 0, 0, 0);
}
static int
drm_output_apply_state_legacy(struct drm_output_state *state)
{
struct drm_output *output = state->output;
struct drm_backend *backend = to_drm_backend(output->base.compositor);
struct drm_plane *scanout_plane = output->scanout_plane;
struct drm_crtc *crtc = output->crtc;
struct drm_property_info *dpms_prop;
struct drm_plane_state *scanout_state;
struct drm_mode *mode;
struct drm_head *head;
const struct pixel_format_info *pinfo = NULL;
uint32_t connectors[MAX_CLONED_CONNECTORS];
int n_conn = 0;
struct timespec now;
int ret = 0;
wl_list_for_each(head, &output->base.head_list, base.output_link) {
assert(n_conn < MAX_CLONED_CONNECTORS);
connectors[n_conn++] = head->connector.connector_id;
}
/* If disable_planes is set then assign_planes() wasn't
* called for this render, so we could still have a stale
* cursor plane set up.
*/
if (output->base.disable_planes) {
drm_output_set_cursor_view(output, NULL);
if (output->cursor_plane) {
output->cursor_plane->base.x = INT32_MIN;
output->cursor_plane->base.y = INT32_MIN;
}
}
if (state->dpms != WESTON_DPMS_ON) {
if (output->cursor_plane) {
ret = drmModeSetCursor(backend->drm.fd, crtc->crtc_id,
0, 0, 0);
if (ret)
weston_log("drmModeSetCursor failed disable: %s\n",
strerror(errno));
}
ret = drmModeSetCrtc(backend->drm.fd, crtc->crtc_id, 0, 0, 0,
NULL, 0, NULL);
if (ret)
weston_log("drmModeSetCrtc failed disabling: %s\n",
strerror(errno));
drm_output_assign_state(state, DRM_STATE_APPLY_SYNC);
weston_compositor_read_presentation_clock(output->base.compositor, &now);
drm_output_update_complete(output,
WP_PRESENTATION_FEEDBACK_KIND_HW_COMPLETION,
now.tv_sec, now.tv_nsec / 1000);
return 0;
}
scanout_state =
drm_output_state_get_existing_plane(state, scanout_plane);
/* The legacy SetCrtc API doesn't allow us to do scaling, and the
* legacy PageFlip API doesn't allow us to do clipping either. */
assert(scanout_state->src_x == 0);
assert(scanout_state->src_y == 0);
assert(scanout_state->src_w ==
(unsigned) (output->base.current_mode->width << 16));
assert(scanout_state->src_h ==
(unsigned) (output->base.current_mode->height << 16));
assert(scanout_state->dest_x == 0);
assert(scanout_state->dest_y == 0);
assert(scanout_state->dest_w == scanout_state->src_w >> 16);
assert(scanout_state->dest_h == scanout_state->src_h >> 16);
/* The legacy SetCrtc API doesn't support fences */
assert(scanout_state->in_fence_fd == -1);
mode = to_drm_mode(output->base.current_mode);
if (backend->state_invalid ||
!scanout_plane->state_cur->fb ||
scanout_plane->state_cur->fb->strides[0] !=
scanout_state->fb->strides[0]) {
ret = drmModeSetCrtc(backend->drm.fd, crtc->crtc_id,
scanout_state->fb->fb_id,
0, 0,
connectors, n_conn,
&mode->mode_info);
if (ret) {
weston_log("set mode failed: %s\n", strerror(errno));
goto err;
}
}
pinfo = scanout_state->fb->format;
drm_debug(backend, "\t[CRTC:%u, PLANE:%u] FORMAT: %s\n",
crtc->crtc_id, scanout_state->plane->plane_id,
pinfo ? pinfo->drm_format_name : "UNKNOWN");
if (drmModePageFlip(backend->drm.fd, crtc->crtc_id,
scanout_state->fb->fb_id,
DRM_MODE_PAGE_FLIP_EVENT, output) < 0) {
weston_log("queueing pageflip failed: %s\n", strerror(errno));
goto err;
}
assert(!output->page_flip_pending);
if (output->pageflip_timer)
wl_event_source_timer_update(output->pageflip_timer,
backend->pageflip_timeout);
drm_output_set_cursor(state);
if (state->dpms != output->state_cur->dpms) {
wl_list_for_each(head, &output->base.head_list, base.output_link) {
dpms_prop = &head->connector.props[WDRM_CONNECTOR_DPMS];
if (dpms_prop->prop_id == 0)
continue;
ret = drmModeConnectorSetProperty(backend->drm.fd,
head->connector.connector_id,
dpms_prop->prop_id,
state->dpms);
if (ret) {
weston_log("DRM: DPMS: failed property set for %s\n",
head->base.name);
}
}
}
drm_output_assign_state(state, DRM_STATE_APPLY_ASYNC);
return 0;
err:
drm_output_set_cursor_view(output, NULL);
drm_output_state_free(state);
return -1;
}
static int
crtc_add_prop(drmModeAtomicReq *req, struct drm_crtc *crtc,
enum wdrm_crtc_property prop, uint64_t val)
{
struct drm_property_info *info = &crtc->props_crtc[prop];
int ret;
if (info->prop_id == 0)
return -1;
ret = drmModeAtomicAddProperty(req, crtc->crtc_id, info->prop_id,
val);
drm_debug(crtc->backend, "\t\t\t[CRTC:%lu] %lu (%s) -> %llu (0x%llx)\n",
(unsigned long) crtc->crtc_id,
(unsigned long) info->prop_id, info->name,
(unsigned long long) val, (unsigned long long) val);
return (ret <= 0) ? -1 : 0;
}
static int
connector_add_prop(drmModeAtomicReq *req, struct drm_connector *connector,
enum wdrm_connector_property prop, uint64_t val)
{
struct drm_property_info *info = &connector->props[prop];
uint32_t connector_id = connector->connector_id;
int ret;
if (info->prop_id == 0)
return -1;
ret = drmModeAtomicAddProperty(req, connector_id, info->prop_id, val);
drm_debug(connector->backend, "\t\t\t[CONN:%lu] %lu (%s) -> %llu (0x%llx)\n",
(unsigned long) connector_id,
(unsigned long) info->prop_id, info->name,
(unsigned long long) val, (unsigned long long) val);
return (ret <= 0) ? -1 : 0;
}
static int
plane_add_prop(drmModeAtomicReq *req, struct drm_plane *plane,
enum wdrm_plane_property prop, uint64_t val)
{
struct drm_property_info *info = &plane->props[prop];
int ret;
if (info->prop_id == 0)
return -1;
ret = drmModeAtomicAddProperty(req, plane->plane_id, info->prop_id,
val);
drm_debug(plane->backend, "\t\t\t[PLANE:%lu] %lu (%s) -> %llu (0x%llx)\n",
(unsigned long) plane->plane_id,
(unsigned long) info->prop_id, info->name,
(unsigned long long) val, (unsigned long long) val);
return (ret <= 0) ? -1 : 0;
}
static bool
drm_connector_has_prop(struct drm_connector *connector,
enum wdrm_connector_property prop)
{
if (connector->props[prop].prop_id != 0)
return true;
return false;
}
/*
* This function converts the protection requests from weston_hdcp_protection
* corresponding drm values. These values can be set in "Content Protection"
* & "HDCP Content Type" connector properties.
*/
static void
get_drm_protection_from_weston(enum weston_hdcp_protection weston_protection,
enum wdrm_content_protection_state *drm_protection,
enum wdrm_hdcp_content_type *drm_cp_type)
{
switch (weston_protection) {
case WESTON_HDCP_DISABLE:
*drm_protection = WDRM_CONTENT_PROTECTION_UNDESIRED;
*drm_cp_type = WDRM_HDCP_CONTENT_TYPE0;
break;
case WESTON_HDCP_ENABLE_TYPE_0:
*drm_protection = WDRM_CONTENT_PROTECTION_DESIRED;
*drm_cp_type = WDRM_HDCP_CONTENT_TYPE0;
break;
case WESTON_HDCP_ENABLE_TYPE_1:
*drm_protection = WDRM_CONTENT_PROTECTION_DESIRED;
*drm_cp_type = WDRM_HDCP_CONTENT_TYPE1;
break;
default:
assert(0 && "bad weston_hdcp_protection");
}
}
static void
drm_connector_set_hdcp_property(struct drm_connector *connector,
enum weston_hdcp_protection protection,
drmModeAtomicReq *req)
{
int ret;
enum wdrm_content_protection_state drm_protection;
enum wdrm_hdcp_content_type drm_cp_type;
struct drm_property_enum_info *enum_info;
uint64_t prop_val;
struct drm_property_info *props = connector->props;
get_drm_protection_from_weston(protection, &drm_protection,
&drm_cp_type);
if (!drm_connector_has_prop(connector, WDRM_CONNECTOR_CONTENT_PROTECTION))
return;
/*
* Content-type property is not exposed for platforms not supporting
* HDCP2.2, therefore, type-1 cannot be supported. The type-0 content
* still can be supported if the content-protection property is exposed.
*/
if (!drm_connector_has_prop(connector, WDRM_CONNECTOR_HDCP_CONTENT_TYPE) &&
drm_cp_type != WDRM_HDCP_CONTENT_TYPE0)
return;
enum_info = props[WDRM_CONNECTOR_CONTENT_PROTECTION].enum_values;
prop_val = enum_info[drm_protection].value;
ret = connector_add_prop(req, connector,
WDRM_CONNECTOR_CONTENT_PROTECTION, prop_val);
assert(ret == 0);
if (!drm_connector_has_prop(connector, WDRM_CONNECTOR_HDCP_CONTENT_TYPE))
return;
enum_info = props[WDRM_CONNECTOR_HDCP_CONTENT_TYPE].enum_values;
prop_val = enum_info[drm_cp_type].value;
ret = connector_add_prop(req, connector,
WDRM_CONNECTOR_HDCP_CONTENT_TYPE, prop_val);
assert(ret == 0);
}
static int
drm_output_apply_state_atomic(struct drm_output_state *state,
drmModeAtomicReq *req,
uint32_t *flags)
{
struct drm_output *output = state->output;
struct drm_backend *b = to_drm_backend(output->base.compositor);
struct drm_crtc *crtc = output->crtc;
struct drm_plane_state *plane_state;
struct drm_mode *current_mode = to_drm_mode(output->base.current_mode);
struct drm_head *head;
int ret = 0;
drm_debug(b, "\t\t[atomic] %s output %lu (%s) state\n",
(*flags & DRM_MODE_ATOMIC_TEST_ONLY) ? "testing" : "applying",
(unsigned long) output->base.id, output->base.name);
if (state->dpms != output->state_cur->dpms) {
drm_debug(b, "\t\t\t[atomic] DPMS state differs, modeset OK\n");
*flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
}
if (state->dpms == WESTON_DPMS_ON) {
ret = drm_mode_ensure_blob(b, current_mode);
if (ret != 0)
return ret;
ret |= crtc_add_prop(req, crtc, WDRM_CRTC_MODE_ID,
current_mode->blob_id);
ret |= crtc_add_prop(req, crtc, WDRM_CRTC_ACTIVE, 1);
/* No need for the DPMS property, since it is implicit in
* routing and CRTC activity. */
wl_list_for_each(head, &output->base.head_list, base.output_link) {
ret |= connector_add_prop(req, &head->connector,
WDRM_CONNECTOR_CRTC_ID,
crtc->crtc_id);
}
} else {
ret |= crtc_add_prop(req, crtc, WDRM_CRTC_MODE_ID, 0);
ret |= crtc_add_prop(req, crtc, WDRM_CRTC_ACTIVE, 0);
/* No need for the DPMS property, since it is implicit in
* routing and CRTC activity. */
wl_list_for_each(head, &output->base.head_list, base.output_link)
ret |= connector_add_prop(req, &head->connector,
WDRM_CONNECTOR_CRTC_ID, 0);
}
wl_list_for_each(head, &output->base.head_list, base.output_link)
drm_connector_set_hdcp_property(&head->connector,
state->protection, req);
if (ret != 0) {
weston_log("couldn't set atomic CRTC/connector state\n");
return ret;
}
wl_list_for_each(plane_state, &state->plane_list, link) {
struct drm_plane *plane = plane_state->plane;
const struct pixel_format_info *pinfo = NULL;
ret |= plane_add_prop(req, plane, WDRM_PLANE_FB_ID,
plane_state->fb ? plane_state->fb->fb_id : 0);
ret |= plane_add_prop(req, plane, WDRM_PLANE_CRTC_ID,
plane_state->fb ? crtc->crtc_id : 0);
ret |= plane_add_prop(req, plane, WDRM_PLANE_SRC_X,
plane_state->src_x);
ret |= plane_add_prop(req, plane, WDRM_PLANE_SRC_Y,
plane_state->src_y);
ret |= plane_add_prop(req, plane, WDRM_PLANE_SRC_W,
plane_state->src_w);
ret |= plane_add_prop(req, plane, WDRM_PLANE_SRC_H,
plane_state->src_h);
ret |= plane_add_prop(req, plane, WDRM_PLANE_CRTC_X,
plane_state->dest_x);
ret |= plane_add_prop(req, plane, WDRM_PLANE_CRTC_Y,
plane_state->dest_y);
ret |= plane_add_prop(req, plane, WDRM_PLANE_CRTC_W,
plane_state->dest_w);
ret |= plane_add_prop(req, plane, WDRM_PLANE_CRTC_H,
plane_state->dest_h);
if (plane->props[WDRM_PLANE_FB_DAMAGE_CLIPS].prop_id != 0)
ret |= plane_add_prop(req, plane, WDRM_PLANE_FB_DAMAGE_CLIPS,
plane_state->damage_blob_id);
if (plane_state->fb && plane_state->fb->format)
pinfo = plane_state->fb->format;
drm_debug(plane->backend, "\t\t\t[PLANE:%lu] FORMAT: %s\n",
(unsigned long) plane->plane_id,
pinfo ? pinfo->drm_format_name : "UNKNOWN");
if (plane_state->in_fence_fd >= 0) {
ret |= plane_add_prop(req, plane,
WDRM_PLANE_IN_FENCE_FD,
plane_state->in_fence_fd);
}
/* do note, that 'invented' zpos values are set as immutable */
if (plane_state->zpos != DRM_PLANE_ZPOS_INVALID_PLANE &&
plane_state->plane->zpos_min != plane_state->plane->zpos_max)
ret |= plane_add_prop(req, plane,
WDRM_PLANE_ZPOS,
plane_state->zpos);
if (ret != 0) {
weston_log("couldn't set plane state\n");
return ret;
}
}
return 0;
}
/**
* Helper function used only by drm_pending_state_apply, with the same
* guarantees and constraints as that function.
*/
static int
drm_pending_state_apply_atomic(struct drm_pending_state *pending_state,
enum drm_state_apply_mode mode)
{
struct drm_backend *b = pending_state->backend;
struct drm_output_state *output_state, *tmp;
struct drm_plane *plane;
drmModeAtomicReq *req = drmModeAtomicAlloc();
uint32_t flags;
int ret = 0;
if (!req)
return -1;
switch (mode) {
case DRM_STATE_APPLY_SYNC:
flags = 0;
break;
case DRM_STATE_APPLY_ASYNC:
flags = DRM_MODE_PAGE_FLIP_EVENT | DRM_MODE_ATOMIC_NONBLOCK;
break;
case DRM_STATE_TEST_ONLY:
flags = DRM_MODE_ATOMIC_TEST_ONLY;
break;
}
if (b->state_invalid) {
struct weston_head *head_base;
struct drm_head *head;
struct drm_crtc *crtc;
uint32_t connector_id;
int err;
drm_debug(b, "\t\t[atomic] previous state invalid; "
"starting with fresh state\n");
/* If we need to reset all our state (e.g. because we've
* just started, or just been VT-switched in), explicitly
* disable all the CRTCs and connectors we aren't using. */
wl_list_for_each(head_base,
&b->compositor->head_list, compositor_link) {
struct drm_property_info *info;
if (weston_head_is_enabled(head_base))
continue;
head = to_drm_head(head_base);
connector_id = head->connector.connector_id;
drm_debug(b, "\t\t[atomic] disabling inactive head %s\n",
head_base->name);
info = &head->connector.props[WDRM_CONNECTOR_CRTC_ID];
err = drmModeAtomicAddProperty(req, connector_id,
info->prop_id, 0);
drm_debug(b, "\t\t\t[CONN:%lu] %lu (%s) -> 0\n",
(unsigned long) connector_id,
(unsigned long) info->prop_id,
info->name);
if (err <= 0)
ret = -1;
}
wl_list_for_each(crtc, &b->crtc_list, link) {
struct drm_property_info *info;
drmModeObjectProperties *props;
uint64_t active;
/* Ignore CRTCs that are in use */
if (crtc->output)
continue;
/* We can't emit a disable on a CRTC that's already
* off, as the kernel will refuse to generate an event
* for an off->off state and fail the commit.
*/
props = drmModeObjectGetProperties(b->drm.fd,
crtc->crtc_id,
DRM_MODE_OBJECT_CRTC);
if (!props) {
ret = -1;
continue;
}
info = &crtc->props_crtc[WDRM_CRTC_ACTIVE];
active = drm_property_get_value(info, props, 0);
drmModeFreeObjectProperties(props);
if (active == 0)
continue;
drm_debug(b, "\t\t[atomic] disabling unused CRTC %lu\n",
(unsigned long) crtc->crtc_id);
ret |= crtc_add_prop(req, crtc, WDRM_CRTC_ACTIVE, 0);
ret |= crtc_add_prop(req, crtc, WDRM_CRTC_MODE_ID, 0);
}
/* Disable all the planes; planes which are being used will
* override this state in the output-state application. */
wl_list_for_each(plane, &b->plane_list, link) {
drm_debug(b, "\t\t[atomic] starting with plane %lu disabled\n",
(unsigned long) plane->plane_id);
plane_add_prop(req, plane, WDRM_PLANE_CRTC_ID, 0);
plane_add_prop(req, plane, WDRM_PLANE_FB_ID, 0);
}
flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
}
wl_list_for_each(output_state, &pending_state->output_list, link) {
if (output_state->output->virtual)
continue;
if (mode == DRM_STATE_APPLY_SYNC)
assert(output_state->dpms == WESTON_DPMS_OFF);
ret |= drm_output_apply_state_atomic(output_state, req, &flags);
}
if (ret != 0) {
weston_log("atomic: couldn't compile atomic state\n");
goto out;
}
ret = drmModeAtomicCommit(b->drm.fd, req, flags, b);
drm_debug(b, "[atomic] drmModeAtomicCommit\n");
/* Test commits do not take ownership of the state; return
* without freeing here. */
if (mode == DRM_STATE_TEST_ONLY) {
drmModeAtomicFree(req);
return ret;
}
if (ret != 0) {
weston_log("atomic: couldn't commit new state: %s\n",
strerror(errno));
goto out;
}
wl_list_for_each_safe(output_state, tmp, &pending_state->output_list,
link)
drm_output_assign_state(output_state, mode);
b->state_invalid = false;
assert(wl_list_empty(&pending_state->output_list));
out:
drmModeAtomicFree(req);
drm_pending_state_free(pending_state);
return ret;
}
/**
* Tests a pending state, to see if the kernel will accept the update as
* constructed.
*
* Using atomic modesetting, the kernel performs the same checks as it would
* on a real commit, returning success or failure without actually modifying
* the running state. It does not return -EBUSY if there are pending updates
* in flight, so states may be tested at any point, however this means a
* state which passed testing may fail on a real commit if the timing is not
* respected (e.g. committing before the previous commit has completed).
*
* Without atomic modesetting, we have no way to check, so we optimistically
* claim it will work.
*
* Unlike drm_pending_state_apply() and drm_pending_state_apply_sync(), this
* function does _not_ take ownership of pending_state, nor does it clear
* state_invalid.
*/
int
drm_pending_state_test(struct drm_pending_state *pending_state)
{
struct drm_backend *b = pending_state->backend;
if (b->atomic_modeset)
return drm_pending_state_apply_atomic(pending_state,
DRM_STATE_TEST_ONLY);
/* We have no way to test state before application on the legacy
* modesetting API, so just claim it succeeded. */
return 0;
}
/**
* Applies all of a pending_state asynchronously: the primary entry point for
* applying KMS state to a device. Updates the state for all outputs in the
* pending_state, as well as disabling any unclaimed outputs.
*
* Unconditionally takes ownership of pending_state, and clears state_invalid.
*/
int
drm_pending_state_apply(struct drm_pending_state *pending_state)
{
struct drm_backend *b = pending_state->backend;
struct drm_output_state *output_state, *tmp;
struct drm_crtc *crtc;
if (b->atomic_modeset)
return drm_pending_state_apply_atomic(pending_state,
DRM_STATE_APPLY_ASYNC);
if (b->state_invalid) {
/* If we need to reset all our state (e.g. because we've
* just started, or just been VT-switched in), explicitly
* disable all the CRTCs we aren't using. This also disables
* all connectors on these CRTCs, so we don't need to do that
* separately with the pre-atomic API. */
wl_list_for_each(crtc, &b->crtc_list, link) {
if (crtc->output)
continue;
drmModeSetCrtc(b->drm.fd, crtc->crtc_id, 0, 0, 0,
NULL, 0, NULL);
}
}
wl_list_for_each_safe(output_state, tmp, &pending_state->output_list,
link) {
struct drm_output *output = output_state->output;
int ret;
if (output->virtual) {
drm_output_assign_state(output_state,
DRM_STATE_APPLY_ASYNC);
continue;
}
ret = drm_output_apply_state_legacy(output_state);
if (ret != 0) {
weston_log("Couldn't apply state for output %s\n",
output->base.name);
weston_output_repaint_failed(&output->base);
drm_output_state_free(output->state_cur);
output->state_cur = drm_output_state_alloc(output, NULL);
b->state_invalid = true;
if (!b->use_pixman) {
drm_output_fini_egl(output);
drm_output_init_egl(output, b);
}
}
}
b->state_invalid = false;
assert(wl_list_empty(&pending_state->output_list));
drm_pending_state_free(pending_state);
return 0;
}
/**
* The synchronous version of drm_pending_state_apply. May only be used to
* disable outputs. Does so synchronously: the request is guaranteed to have
* completed on return, and the output will not be touched afterwards.
*
* Unconditionally takes ownership of pending_state, and clears state_invalid.
*/
int
drm_pending_state_apply_sync(struct drm_pending_state *pending_state)
{
struct drm_backend *b = pending_state->backend;
struct drm_output_state *output_state, *tmp;
struct drm_crtc *crtc;
if (b->atomic_modeset)
return drm_pending_state_apply_atomic(pending_state,
DRM_STATE_APPLY_SYNC);
if (b->state_invalid) {
/* If we need to reset all our state (e.g. because we've
* just started, or just been VT-switched in), explicitly
* disable all the CRTCs we aren't using. This also disables
* all connectors on these CRTCs, so we don't need to do that
* separately with the pre-atomic API. */
wl_list_for_each(crtc, &b->crtc_list, link) {
if (crtc->output)
continue;
drmModeSetCrtc(b->drm.fd, crtc->crtc_id, 0, 0, 0,
NULL, 0, NULL);
}
}
wl_list_for_each_safe(output_state, tmp, &pending_state->output_list,
link) {
int ret;
assert(output_state->dpms == WESTON_DPMS_OFF);
ret = drm_output_apply_state_legacy(output_state);
if (ret != 0) {
weston_log("Couldn't apply state for output %s\n",
output_state->output->base.name);
}
}
b->state_invalid = false;
assert(wl_list_empty(&pending_state->output_list));
drm_pending_state_free(pending_state);
return 0;
}
void
drm_output_update_msc(struct drm_output *output, unsigned int seq)
{
uint64_t msc_hi = output->base.msc >> 32;
if (seq < (output->base.msc & 0xffffffff))
msc_hi++;
output->base.msc = (msc_hi << 32) + seq;
}
static void
page_flip_handler(int fd, unsigned int frame,
unsigned int sec, unsigned int usec, void *data)
{
struct drm_output *output = data;
struct drm_backend *b = to_drm_backend(output->base.compositor);
uint32_t flags = WP_PRESENTATION_FEEDBACK_KIND_VSYNC |
WP_PRESENTATION_FEEDBACK_KIND_HW_COMPLETION |
WP_PRESENTATION_FEEDBACK_KIND_HW_CLOCK;
drm_output_update_msc(output, frame);
assert(!b->atomic_modeset);
assert(output->page_flip_pending);
output->page_flip_pending = false;
drm_output_update_complete(output, flags, sec, usec);
}
static void
atomic_flip_handler(int fd, unsigned int frame, unsigned int sec,
unsigned int usec, unsigned int crtc_id, void *data)
{
struct drm_backend *b = data;
struct drm_crtc *crtc;
struct drm_output *output;
uint32_t flags = WP_PRESENTATION_FEEDBACK_KIND_VSYNC |
WP_PRESENTATION_FEEDBACK_KIND_HW_COMPLETION |
WP_PRESENTATION_FEEDBACK_KIND_HW_CLOCK;
crtc = drm_crtc_find(b, crtc_id);
assert(crtc);
output = crtc->output;
/* During the initial modeset, we can disable CRTCs which we don't
* actually handle during normal operation; this will give us events
* for unknown outputs. Ignore them. */
if (!output || !output->base.enabled)
return;
drm_output_update_msc(output, frame);
drm_debug(b, "[atomic][CRTC:%u] flip processing started\n", crtc_id);
assert(b->atomic_modeset);
assert(output->atomic_complete_pending);
output->atomic_complete_pending = false;
drm_output_update_complete(output, flags, sec, usec);
drm_debug(b, "[atomic][CRTC:%u] flip processing completed\n", crtc_id);
}
int
on_drm_input(int fd, uint32_t mask, void *data)
{
struct drm_backend *b = data;
drmEventContext evctx;
memset(&evctx, 0, sizeof evctx);
evctx.version = 3;
if (b->atomic_modeset)
evctx.page_flip_handler2 = atomic_flip_handler;
else
evctx.page_flip_handler = page_flip_handler;
drmHandleEvent(fd, &evctx);
return 1;
}
int
init_kms_caps(struct drm_backend *b)
{
uint64_t cap;
int ret;
weston_log("using %s\n", b->drm.filename);
ret = drmGetCap(b->drm.fd, DRM_CAP_TIMESTAMP_MONOTONIC, &cap);
if (ret != 0 || cap != 1) {
weston_log("Error: kernel DRM KMS does not support DRM_CAP_TIMESTAMP_MONOTONIC.\n");
return -1;
}
if (weston_compositor_set_presentation_clock(b->compositor, CLOCK_MONOTONIC) < 0) {
weston_log("Error: failed to set presentation clock to CLOCK_MONOTONIC.\n");
return -1;
}
ret = drmGetCap(b->drm.fd, DRM_CAP_CURSOR_WIDTH, &cap);
if (ret == 0)
b->cursor_width = cap;
else
b->cursor_width = 64;
ret = drmGetCap(b->drm.fd, DRM_CAP_CURSOR_HEIGHT, &cap);
if (ret == 0)
b->cursor_height = cap;
else
b->cursor_height = 64;
ret = drmSetClientCap(b->drm.fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1);
if (ret) {
weston_log("Error: drm card doesn't support universal planes!\n");
return -1;
}
if (!getenv("WESTON_DISABLE_ATOMIC")) {
ret = drmGetCap(b->drm.fd, DRM_CAP_CRTC_IN_VBLANK_EVENT, &cap);
if (ret != 0)
cap = 0;
ret = drmSetClientCap(b->drm.fd, DRM_CLIENT_CAP_ATOMIC, 1);
b->atomic_modeset = ((ret == 0) && (cap == 1));
}
weston_log("DRM: %s atomic modesetting\n",
b->atomic_modeset ? "supports" : "does not support");
if (!getenv("WESTON_DISABLE_GBM_MODIFIERS")) {
ret = drmGetCap(b->drm.fd, DRM_CAP_ADDFB2_MODIFIERS, &cap);
if (ret == 0)
b->fb_modifiers = cap;
}
weston_log("DRM: %s GBM modifiers\n",
b->fb_modifiers ? "supports" : "does not support");
drmSetClientCap(b->drm.fd, DRM_CLIENT_CAP_WRITEBACK_CONNECTORS, 1);
/*
* KMS support for hardware planes cannot properly synchronize
* without nuclear page flip. Without nuclear/atomic, hw plane
* and cursor plane updates would either tear or cause extra
* waits for vblanks which means dropping the compositor framerate
* to a fraction. For cursors, it's not so bad, so they are
* enabled.
*/
if (!b->atomic_modeset || getenv("WESTON_FORCE_RENDERER"))
b->sprites_are_broken = true;
ret = drmSetClientCap(b->drm.fd, DRM_CLIENT_CAP_ASPECT_RATIO, 1);
b->aspect_ratio_supported = (ret == 0);
weston_log("DRM: %s picture aspect ratio\n",
b->aspect_ratio_supported ? "supports" : "does not support");
return 0;
}
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