blob: 8c7da8181dd34019ff5416bb6de4edfd3ee27135 [file] [log] [blame]
/*
* Copyright © 2008-2011 Kristian Høgsberg
* Copyright © 2011 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.
*/
#include "config.h"
#include <errno.h>
#include <stdint.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <linux/input.h>
#include <linux/vt.h>
#include <assert.h>
#include <sys/mman.h>
#include <dlfcn.h>
#include <time.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <drm_fourcc.h>
#include <gbm.h>
#include <libudev.h>
#include "compositor.h"
#include "compositor-drm.h"
#include "shared/helpers.h"
#include "shared/timespec-util.h"
#if defined(ENABLE_OPENGL)
#include "gl-renderer.h"
#endif
#if defined(ENABLE_IMXG2D)
#include "g2d-renderer.h"
#endif
#include "weston-egl-ext.h"
#include "pixman-renderer.h"
#include "pixel-formats.h"
#include "libbacklight.h"
#include "libinput-seat.h"
#include "launcher-util.h"
#include "vaapi-recorder.h"
#include "presentation-time-server-protocol.h"
#include "linux-dmabuf.h"
#include "linux-dmabuf-unstable-v1-server-protocol.h"
#ifndef DRM_CAP_TIMESTAMP_MONOTONIC
#define DRM_CAP_TIMESTAMP_MONOTONIC 0x6
#endif
#ifndef DRM_CLIENT_CAP_UNIVERSAL_PLANES
#define DRM_CLIENT_CAP_UNIVERSAL_PLANES 2
#endif
#ifndef DRM_CAP_CURSOR_WIDTH
#define DRM_CAP_CURSOR_WIDTH 0x8
#endif
#ifndef DRM_CAP_CURSOR_HEIGHT
#define DRM_CAP_CURSOR_HEIGHT 0x9
#endif
#ifndef GBM_BO_USE_CURSOR
#define GBM_BO_USE_CURSOR GBM_BO_USE_CURSOR_64X64
#endif
#ifdef HAVE_DRM_FORMATS_BLOB
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);
}
#endif
/**
* Represents the values of an enum-type KMS property
*/
struct drm_property_enum_info {
const char *name; /**< name as string (static, not freed) */
bool valid; /**< true if value is supported; ignore if false */
uint64_t value; /**< raw value */
};
/**
* Holds information on a DRM property, including its ID and the enum
* values it holds.
*
* DRM properties are allocated dynamically, and maintained as DRM objects
* within the normal object ID space; they thus do not have a stable ID
* to refer to. This includes enum values, which must be referred to by
* integer values, but these are not stable.
*
* drm_property_info allows a cache to be maintained where Weston can use
* enum values internally to refer to properties, with the mapping to DRM
* ID values being maintained internally.
*/
struct drm_property_info {
const char *name; /**< name as string (static, not freed) */
uint32_t prop_id; /**< KMS property object ID */
unsigned int num_enum_values; /**< number of enum values */
struct drm_property_enum_info *enum_values; /**< array of enum values */
};
/**
* List of properties attached to DRM planes
*/
enum wdrm_plane_property {
WDRM_PLANE_TYPE = 0,
WDRM_PLANE_SRC_X,
WDRM_PLANE_SRC_Y,
WDRM_PLANE_SRC_W,
WDRM_PLANE_SRC_H,
WDRM_PLANE_CRTC_X,
WDRM_PLANE_CRTC_Y,
WDRM_PLANE_CRTC_W,
WDRM_PLANE_CRTC_H,
WDRM_PLANE_FB_ID,
WDRM_PLANE_CRTC_ID,
WDRM_PLANE_IN_FORMATS,
WDRM_PLANE__COUNT
};
/**
* Possible values for the WDRM_PLANE_TYPE property.
*/
enum wdrm_plane_type {
WDRM_PLANE_TYPE_PRIMARY = 0,
WDRM_PLANE_TYPE_CURSOR,
WDRM_PLANE_TYPE_OVERLAY,
WDRM_PLANE_TYPE__COUNT
};
static 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",
},
};
static 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" },
};
/**
* List of properties attached to a DRM connector
*/
enum wdrm_connector_property {
WDRM_CONNECTOR_EDID = 0,
WDRM_CONNECTOR_DPMS,
WDRM_CONNECTOR_CRTC_ID,
WDRM_CONNECTOR__COUNT
};
static const struct drm_property_info connector_props[] = {
[WDRM_CONNECTOR_EDID] = { .name = "EDID" },
[WDRM_CONNECTOR_DPMS] = { .name = "DPMS" },
[WDRM_CONNECTOR_CRTC_ID] = { .name = "CRTC_ID", },
};
/**
* List of properties attached to DRM CRTCs
*/
enum wdrm_crtc_property {
WDRM_CRTC_MODE_ID = 0,
WDRM_CRTC_ACTIVE,
WDRM_CRTC__COUNT
};
static const struct drm_property_info crtc_props[] = {
[WDRM_CRTC_MODE_ID] = { .name = "MODE_ID", },
[WDRM_CRTC_ACTIVE] = { .name = "ACTIVE", },
};
/**
* Mode for drm_output_state_duplicate.
*/
enum drm_output_state_duplicate_mode {
DRM_OUTPUT_STATE_CLEAR_PLANES, /**< reset all planes to off */
DRM_OUTPUT_STATE_PRESERVE_PLANES, /**< preserve plane state */
};
/**
* 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 */
};
struct drm_backend {
struct weston_backend base;
struct weston_compositor *compositor;
struct udev *udev;
struct wl_event_source *drm_source;
struct udev_monitor *udev_monitor;
struct wl_event_source *udev_drm_source;
struct {
int id;
int fd;
char *filename;
} drm;
struct gbm_device *gbm;
struct wl_listener session_listener;
uint32_t gbm_format;
/* we need these parameters in order to not fail drmModeAddFB2()
* due to out of bounds dimensions, and then mistakenly set
* sprites_are_broken:
*/
int min_width, max_width;
int min_height, max_height;
struct wl_list plane_list;
int sprites_are_broken;
int sprites_hidden;
void *repaint_data;
bool state_invalid;
/* Connector and CRTC IDs not used by any enabled output. */
struct wl_array unused_connectors;
struct wl_array unused_crtcs;
int cursors_are_broken;
bool universal_planes;
bool atomic_modeset;
int use_pixman;
#if defined(ENABLE_IMXG2D)
int use_g2d;
#endif
struct udev_input input;
int32_t cursor_width;
int32_t cursor_height;
uint32_t pageflip_timeout;
bool shutting_down;
};
struct drm_mode {
struct weston_mode base;
drmModeModeInfo mode_info;
uint32_t blob_id;
};
enum drm_fb_type {
BUFFER_INVALID = 0, /**< never used */
BUFFER_CLIENT, /**< directly sourced from client */
BUFFER_DMABUF, /**< imported from linux_dmabuf client */
BUFFER_PIXMAN_DUMB, /**< internal Pixman rendering */
BUFFER_GBM_SURFACE, /**< internal EGL rendering */
BUFFER_CURSOR, /**< internal cursor buffer */
};
struct drm_fb {
enum drm_fb_type type;
int refcnt;
uint32_t fb_id, size;
uint32_t handles[4];
uint32_t strides[4];
uint32_t offsets[4];
const struct pixel_format_info *format;
uint64_t modifier;
int width, height;
int fd;
struct weston_buffer_reference buffer_ref;
/* Used by gbm fbs */
struct gbm_bo *bo;
struct gbm_surface *gbm_surface;
/* Used by dumb fbs */
void *map;
};
struct drm_edid {
char eisa_id[13];
char monitor_name[13];
char pnp_id[5];
char serial_number[13];
};
/**
* Pending state holds one or more drm_output_state structures, collected from
* performing repaint. This pending state is transient, and only lives between
* beginning a repaint group and flushing the results: after flush, each
* output state will complete and be retired separately.
*/
struct drm_pending_state {
struct drm_backend *backend;
struct wl_list output_list;
};
/*
* Output state holds the dynamic state for one Weston output, i.e. a KMS CRTC,
* plus >= 1 each of encoder/connector/plane. Since everything but the planes
* is currently statically assigned per-output, we mainly use this to track
* plane state.
*
* pending_state is set when the output state is owned by a pending_state,
* i.e. when it is being constructed and has not yet been applied. When the
* output state has been applied, the owning pending_state is freed.
*/
struct drm_output_state {
struct drm_pending_state *pending_state;
struct drm_output *output;
struct wl_list link;
enum dpms_enum dpms;
struct wl_list plane_list;
};
/**
* Plane state holds the dynamic state for a plane: where it is positioned,
* and which buffer it is currently displaying.
*
* The plane state is owned by an output state, except when setting an initial
* state. See drm_output_state for notes on state object lifetime.
*/
struct drm_plane_state {
struct drm_plane *plane;
struct drm_output *output;
struct drm_output_state *output_state;
struct drm_fb *fb;
struct weston_view *ev; /**< maintained for drm_assign_planes only */
int32_t src_x, src_y;
uint32_t src_w, src_h;
int32_t dest_x, dest_y;
uint32_t dest_w, dest_h;
bool complete;
struct wl_list link; /* drm_output_state::plane_list */
};
/**
* A plane represents one buffer, positioned within a CRTC, and stacked
* relative to other planes on the same CRTC.
*
* Each CRTC has a 'primary plane', which use used to display the classic
* framebuffer contents, as accessed through the legacy drmModeSetCrtc
* call (which combines setting the CRTC's actual physical mode, and the
* properties of the primary plane).
*
* The cursor plane also has its own alternate legacy API.
*
* Other planes are used opportunistically to display content we do not
* wish to blit into the primary plane. These non-primary/cursor planes
* are referred to as 'sprites'.
*/
struct drm_plane {
struct weston_plane base;
struct drm_backend *backend;
enum wdrm_plane_type type;
uint32_t possible_crtcs;
uint32_t plane_id;
uint32_t count_formats;
struct drm_property_info props[WDRM_PLANE__COUNT];
/* The last state submitted to the kernel for this plane. */
struct drm_plane_state *state_cur;
struct wl_list link;
struct {
uint32_t format;
uint32_t count_modifiers;
uint64_t *modifiers;
} formats[];
};
struct drm_output {
struct weston_output base;
drmModeConnector *connector;
uint32_t crtc_id; /* object ID to pass to DRM functions */
int pipe; /* index of CRTC in resource array / bitmasks */
uint32_t connector_id;
struct drm_edid edid;
/* Holds the properties for the connector */
struct drm_property_info props_conn[WDRM_CONNECTOR__COUNT];
/* Holds the properties for the CRTC */
struct drm_property_info props_crtc[WDRM_CRTC__COUNT];
struct backlight *backlight;
int vblank_pending;
int page_flip_pending;
int atomic_complete_pending;
int destroy_pending;
int disable_pending;
int dpms_off_pending;
struct drm_fb *gbm_cursor_fb[2];
struct drm_plane *cursor_plane;
struct weston_view *cursor_view;
int current_cursor;
struct gbm_surface *gbm_surface;
uint32_t gbm_format;
/* Plane being displayed directly on the CRTC */
struct drm_plane *scanout_plane;
/* The last state submitted to the kernel for this CRTC. */
struct drm_output_state *state_cur;
/* The previously-submitted state, where the hardware has not
* yet acknowledged completion of state_cur. */
struct drm_output_state *state_last;
struct drm_fb *dumb[2];
pixman_image_t *image[2];
#if defined(ENABLE_IMXG2D)
struct g2d_surfaceEx g2d_image[2];
#endif
int current_image;
pixman_region32_t previous_damage;
struct vaapi_recorder *recorder;
struct wl_listener recorder_frame_listener;
struct wl_event_source *pageflip_timer;
};
#if defined(ENABLE_OPENGL)
static struct gl_renderer_interface *gl_renderer;
#endif
#if defined(ENABLE_IMXG2D)
static struct g2d_renderer_interface *g2d_renderer;
#endif
static const char default_seat[] = "seat0";
static void
wl_array_remove_uint32(struct wl_array *array, uint32_t elm)
{
uint32_t *pos, *end;
end = (uint32_t *) ((char *) array->data + array->size);
wl_array_for_each(pos, array) {
if (*pos != elm)
continue;
array->size -= sizeof(*pos);
if (pos + 1 == end)
break;
memmove(pos, pos + 1, (char *) end - (char *) (pos + 1));
break;
}
}
static inline struct drm_output *
to_drm_output(struct weston_output *base)
{
return container_of(base, struct drm_output, base);
}
static inline struct drm_backend *
to_drm_backend(struct weston_compositor *base)
{
return container_of(base->backend, struct drm_backend, base);
}
static int
pageflip_timeout(void *data) {
/*
* Our timer just went off, that means we're not receiving drm
* page flip events anymore for that output. Let's gracefully exit
* weston with a return value so devs can debug what's going on.
*/
struct drm_output *output = data;
struct weston_compositor *compositor = output->base.compositor;
weston_log("Pageflip timeout reached on output %s, your "
"driver is probably buggy! Exiting.\n",
output->base.name);
weston_compositor_exit_with_code(compositor, EXIT_FAILURE);
return 0;
}
/* Creates the pageflip timer. Note that it isn't armed by default */
static int
drm_output_pageflip_timer_create(struct drm_output *output)
{
struct wl_event_loop *loop = NULL;
struct weston_compositor *ec = output->base.compositor;
loop = wl_display_get_event_loop(ec->wl_display);
assert(loop);
output->pageflip_timer = wl_event_loop_add_timer(loop,
pageflip_timeout,
output);
if (output->pageflip_timer == NULL) {
weston_log("creating drm pageflip timer failed: %m\n");
return -1;
}
return 0;
}
static inline struct drm_mode *
to_drm_mode(struct weston_mode *base)
{
return container_of(base, struct drm_mode, base);
}
/**
* 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
*/
static uint64_t
drm_property_get_value(struct drm_property_info *info,
drmModeObjectPropertiesPtr 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;
}
/**
* 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
*/
static 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];
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.
*
* @param info DRM property info array
* @param num_props Number of entries in array to free
*/
static 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);
}
static void
drm_output_set_cursor(struct drm_output_state *output_state);
static void
drm_output_update_msc(struct drm_output *output, unsigned int seq);
static void
drm_output_destroy(struct weston_output *output_base);
/**
* Returns true if the plane can be used on the given output for its current
* repaint cycle.
*/
static bool
drm_plane_is_available(struct drm_plane *plane, struct drm_output *output)
{
assert(plane->state_cur);
/* The plane still has a request not yet completed by the kernel. */
if (!plane->state_cur->complete)
return false;
/* The plane is still active on another output. */
if (plane->state_cur->output && plane->state_cur->output != output)
return false;
/* Check whether the plane can be used with this CRTC; possible_crtcs
* is a bitmask of CRTC indices (pipe), rather than CRTC object ID. */
return !!(plane->possible_crtcs & (1 << output->pipe));
}
static struct drm_output *
drm_output_find_by_crtc(struct drm_backend *b, uint32_t crtc_id)
{
struct drm_output *output;
wl_list_for_each(output, &b->compositor->output_list, base.link) {
if (output->crtc_id == crtc_id)
return output;
}
wl_list_for_each(output, &b->compositor->pending_output_list,
base.link) {
if (output->crtc_id == crtc_id)
return output;
}
return NULL;
}
static struct drm_output *
drm_output_find_by_connector(struct drm_backend *b, uint32_t connector_id)
{
struct drm_output *output;
wl_list_for_each(output, &b->compositor->output_list, base.link) {
if (output->connector_id == connector_id)
return output;
}
wl_list_for_each(output, &b->compositor->pending_output_list,
base.link) {
if (output->connector_id == connector_id)
return output;
}
return NULL;
}
static void
drm_fb_destroy(struct drm_fb *fb)
{
if (fb->fb_id != 0)
drmModeRmFB(fb->fd, fb->fb_id);
weston_buffer_reference(&fb->buffer_ref, NULL);
free(fb);
}
static void
drm_fb_destroy_dumb(struct drm_fb *fb)
{
struct drm_mode_destroy_dumb destroy_arg;
assert(fb->type == BUFFER_PIXMAN_DUMB);
if (fb->map && fb->size > 0)
munmap(fb->map, fb->size);
memset(&destroy_arg, 0, sizeof(destroy_arg));
destroy_arg.handle = fb->handles[0];
drmIoctl(fb->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_arg);
drm_fb_destroy(fb);
}
static void
drm_fb_destroy_gbm(struct gbm_bo *bo, void *data)
{
struct drm_fb *fb = data;
assert(fb->type == BUFFER_GBM_SURFACE || fb->type == BUFFER_CLIENT ||
fb->type == BUFFER_CURSOR);
drm_fb_destroy(fb);
}
static int
drm_fb_addfb(struct drm_fb *fb)
{
int ret = -EINVAL;
#ifdef HAVE_DRM_ADDFB2_MODIFIERS
uint64_t mods[4] = { };
int i;
#endif
/* If we have a modifier set, we must only use the WithModifiers
* entrypoint; we cannot import it through legacy ioctls. */
if (fb->modifier != DRM_FORMAT_MOD_INVALID) {
/* KMS demands that if a modifier is set, it must be the same
* for all planes. */
#ifdef HAVE_DRM_ADDFB2_MODIFIERS
for (i = 0; i < (int) ARRAY_LENGTH(mods) && fb->handles[i]; i++)
mods[i] = fb->modifier;
ret = drmModeAddFB2WithModifiers(fb->fd, fb->width, fb->height,
fb->format->format,
fb->handles, fb->strides,
fb->offsets, mods, &fb->fb_id,
DRM_MODE_FB_MODIFIERS);
#endif
if (ret == 0)
return ret;
}
ret = drmModeAddFB2(fb->fd, fb->width, fb->height, fb->format->format,
fb->handles, fb->strides, fb->offsets, &fb->fb_id,
0);
if (ret == 0)
return 0;
/* Legacy AddFB can't always infer the format from depth/bpp alone, so
* check if our format is one of the lucky ones. */
if (!fb->format->depth || !fb->format->bpp)
return ret;
/* Cannot fall back to AddFB for multi-planar formats either. */
if (fb->handles[1] || fb->handles[2] || fb->handles[3])
return ret;
ret = drmModeAddFB(fb->fd, fb->width, fb->height,
fb->format->depth, fb->format->bpp,
fb->strides[0], fb->handles[0], &fb->fb_id);
return ret;
}
static struct drm_fb *
drm_fb_create_dumb(struct drm_backend *b, int width, int height,
uint32_t format)
{
struct drm_fb *fb;
int ret;
struct drm_mode_create_dumb create_arg;
struct drm_mode_destroy_dumb destroy_arg;
struct drm_mode_map_dumb map_arg;
fb = zalloc(sizeof *fb);
if (!fb)
return NULL;
fb->refcnt = 1;
fb->format = pixel_format_get_info(format);
if (!fb->format) {
weston_log("failed to look up format 0x%lx\n",
(unsigned long) format);
goto err_fb;
}
if (!fb->format->depth || !fb->format->bpp) {
weston_log("format 0x%lx is not compatible with dumb buffers\n",
(unsigned long) format);
goto err_fb;
}
memset(&create_arg, 0, sizeof create_arg);
create_arg.bpp = fb->format->bpp;
create_arg.width = width;
create_arg.height = height;
ret = drmIoctl(b->drm.fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_arg);
if (ret)
goto err_fb;
fb->type = BUFFER_PIXMAN_DUMB;
fb->modifier = DRM_FORMAT_MOD_INVALID;
fb->handles[0] = create_arg.handle;
fb->strides[0] = create_arg.pitch;
fb->size = create_arg.size;
fb->width = width;
fb->height = height;
fb->fd = b->drm.fd;
if (drm_fb_addfb(fb) != 0) {
weston_log("failed to create kms fb: %m\n");
goto err_bo;
}
memset(&map_arg, 0, sizeof map_arg);
map_arg.handle = fb->handles[0];
ret = drmIoctl(fb->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_arg);
if (ret)
goto err_add_fb;
fb->map = mmap(NULL, fb->size, PROT_WRITE,
MAP_SHARED, b->drm.fd, map_arg.offset);
if (fb->map == MAP_FAILED)
goto err_add_fb;
return fb;
err_add_fb:
drmModeRmFB(b->drm.fd, fb->fb_id);
err_bo:
memset(&destroy_arg, 0, sizeof(destroy_arg));
destroy_arg.handle = create_arg.handle;
drmIoctl(b->drm.fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_arg);
err_fb:
free(fb);
return NULL;
}
static struct drm_fb *
drm_fb_ref(struct drm_fb *fb)
{
fb->refcnt++;
return fb;
}
static void
drm_fb_destroy_dmabuf(struct drm_fb *fb)
{
/* We deliberately do not close the GEM handles here; GBM manages
* their lifetime through the BO. */
gbm_bo_destroy(fb->bo);
drm_fb_destroy(fb);
}
static struct drm_fb *
drm_fb_get_from_dmabuf(struct linux_dmabuf_buffer *dmabuf,
struct drm_backend *backend, bool is_opaque)
{
#ifdef HAVE_GBM_FD_IMPORT
struct drm_fb *fb;
struct gbm_import_fd_data import_legacy = {
.width = dmabuf->attributes.width,
.height = dmabuf->attributes.height,
.format = dmabuf->attributes.format,
.stride = dmabuf->attributes.stride[0],
.fd = dmabuf->attributes.fd[0],
};
struct gbm_import_fd_modifier_data import_mod = {
.width = dmabuf->attributes.width,
.height = dmabuf->attributes.height,
.format = dmabuf->attributes.format,
.num_fds = dmabuf->attributes.n_planes,
.modifier = dmabuf->attributes.modifier[0],
};
int i;
/* XXX: TODO:
*
* Currently the buffer is rejected if any dmabuf attribute
* flag is set. This keeps us from passing an inverted /
* interlaced / bottom-first buffer (or any other type that may
* be added in the future) through to an overlay. Ultimately,
* these types of buffers should be handled through buffer
* transforms and not as spot-checks requiring specific
* knowledge. */
if (dmabuf->attributes.flags)
return NULL;
fb = zalloc(sizeof *fb);
if (fb == NULL)
return NULL;
fb->refcnt = 1;
fb->type = BUFFER_DMABUF;
memcpy(import_mod.fds, dmabuf->attributes.fd, sizeof(import_mod.fds));
memcpy(import_mod.strides, dmabuf->attributes.stride,
sizeof(import_mod.fds));
memcpy(import_mod.offsets, dmabuf->attributes.offset,
sizeof(import_mod.fds));
if (dmabuf->attributes.modifier[0] != DRM_FORMAT_MOD_INVALID) {
fb->bo = gbm_bo_import(backend->gbm, GBM_BO_IMPORT_FD_MODIFIER,
&import_mod,
GBM_BO_USE_SCANOUT);
} else {
fb->bo = gbm_bo_import(backend->gbm, GBM_BO_IMPORT_FD,
&import_legacy,
GBM_BO_USE_SCANOUT);
}
if (!fb->bo)
goto err_free;
fb->width = dmabuf->attributes.width;
fb->height = dmabuf->attributes.height;
memcpy(fb->strides, dmabuf->attributes.stride, sizeof(fb->strides));
memcpy(fb->offsets, dmabuf->attributes.offset, sizeof(fb->offsets));
fb->format = pixel_format_get_info(dmabuf->attributes.format);
fb->modifier = dmabuf->attributes.modifier[0];
fb->size = 0;
fb->fd = backend->drm.fd;
if (!fb->format) {
weston_log("couldn't look up format info for 0x%lx\n",
(unsigned long) fb->format);
goto err_free;
}
if (is_opaque)
fb->format = pixel_format_get_opaque_substitute(fb->format);
if (backend->min_width > fb->width ||
fb->width > backend->max_width ||
backend->min_height > fb->height ||
fb->height > backend->max_height) {
weston_log("bo geometry out of bounds\n");
goto err_free;
}
for (i = 0; i < dmabuf->attributes.n_planes; i++) {
fb->handles[i] = gbm_bo_get_handle_for_plane(fb->bo, i).u32;
if (!fb->handles[i])
goto err_free;
}
if (drm_fb_addfb(fb) != 0) {
weston_log("failed to create kms fb: %m\n");
goto err_free;
}
return fb;
err_free:
drm_fb_destroy_dmabuf(fb);
#endif
return NULL;
}
static struct drm_fb *
drm_fb_get_from_bo(struct gbm_bo *bo, struct drm_backend *backend,
bool is_opaque, enum drm_fb_type type)
{
struct drm_fb *fb = gbm_bo_get_user_data(bo);
#ifdef HAVE_GBM_MODIFIERS
int i;
#endif
if (fb) {
assert(fb->type == type);
return drm_fb_ref(fb);
}
fb = zalloc(sizeof *fb);
if (fb == NULL)
return NULL;
fb->type = type;
fb->refcnt = 1;
fb->bo = bo;
fb->fd = backend->drm.fd;
fb->width = gbm_bo_get_width(bo);
fb->height = gbm_bo_get_height(bo);
fb->format = pixel_format_get_info(gbm_bo_get_format(bo));
fb->size = 0;
#ifdef HAVE_GBM_MODIFIERS
fb->modifier = gbm_bo_get_modifier(bo);
for (i = 0; i < gbm_bo_get_plane_count(bo); i++) {
fb->strides[i] = gbm_bo_get_stride_for_plane(bo, i);
fb->handles[i] = gbm_bo_get_handle_for_plane(bo, i).u32;
fb->offsets[i] = gbm_bo_get_offset(bo, i);
}
#else
fb->strides[0] = gbm_bo_get_stride(bo);
fb->handles[0] = gbm_bo_get_handle(bo).u32;
fb->modifier = DRM_FORMAT_MOD_INVALID;
#endif
if (!fb->format) {
weston_log("couldn't look up format 0x%lx\n",
(unsigned long) gbm_bo_get_format(bo));
goto err_free;
}
if (is_opaque)
fb->format = pixel_format_get_opaque_substitute(fb->format);
if (backend->min_width > fb->width ||
fb->width > backend->max_width ||
backend->min_height > fb->height ||
fb->height > backend->max_height) {
weston_log("bo geometry out of bounds\n");
goto err_free;
}
if (drm_fb_addfb(fb) != 0) {
weston_log("failed to create kms fb: %m\n");
goto err_free;
}
gbm_bo_set_user_data(bo, fb, drm_fb_destroy_gbm);
return fb;
err_free:
free(fb);
return NULL;
}
static void
drm_fb_set_buffer(struct drm_fb *fb, struct weston_buffer *buffer)
{
assert(fb->buffer_ref.buffer == NULL);
assert(fb->type == BUFFER_CLIENT || fb->type == BUFFER_DMABUF);
weston_buffer_reference(&fb->buffer_ref, buffer);
}
static void
drm_fb_unref(struct drm_fb *fb)
{
if (!fb)
return;
assert(fb->refcnt > 0);
if (--fb->refcnt > 0)
return;
switch (fb->type) {
case BUFFER_PIXMAN_DUMB:
drm_fb_destroy_dumb(fb);
break;
case BUFFER_CURSOR:
case BUFFER_CLIENT:
gbm_bo_destroy(fb->bo);
break;
case BUFFER_GBM_SURFACE:
gbm_surface_release_buffer(fb->gbm_surface, fb->bo);
break;
case BUFFER_DMABUF:
drm_fb_destroy_dmabuf(fb);
break;
default:
assert(NULL);
break;
}
}
/**
* Allocate a new, empty, plane state.
*/
static struct drm_plane_state *
drm_plane_state_alloc(struct drm_output_state *state_output,
struct drm_plane *plane)
{
struct drm_plane_state *state = zalloc(sizeof(*state));
assert(state);
state->output_state = state_output;
state->plane = plane;
/* Here we only add the plane state to the desired link, and not
* set the member. Having an output pointer set means that the
* plane will be displayed on the output; this won't be the case
* when we go to disable a plane. In this case, it must be part of
* the commit (and thus the output state), but the member must be
* NULL, as it will not be on any output when the state takes
* effect.
*/
if (state_output)
wl_list_insert(&state_output->plane_list, &state->link);
else
wl_list_init(&state->link);
return state;
}
/**
* Free an existing plane state. As a special case, the state will not
* normally be freed if it is the current state; see drm_plane_set_state.
*/
static void
drm_plane_state_free(struct drm_plane_state *state, bool force)
{
if (!state)
return;
wl_list_remove(&state->link);
wl_list_init(&state->link);
state->output_state = NULL;
if (force || state != state->plane->state_cur) {
drm_fb_unref(state->fb);
free(state);
}
}
/**
* Duplicate an existing plane state into a new plane state, storing it within
* the given output state. If the output state already contains a plane state
* for the drm_plane referenced by 'src', that plane state is freed first.
*/
static struct drm_plane_state *
drm_plane_state_duplicate(struct drm_output_state *state_output,
struct drm_plane_state *src)
{
struct drm_plane_state *dst = malloc(sizeof(*dst));
struct drm_plane_state *old, *tmp;
assert(src);
assert(dst);
*dst = *src;
wl_list_init(&dst->link);
wl_list_for_each_safe(old, tmp, &state_output->plane_list, link) {
/* Duplicating a plane state into the same output state, so
* it can replace itself with an identical copy of itself,
* makes no sense. */
assert(old != src);
if (old->plane == dst->plane)
drm_plane_state_free(old, false);
}
wl_list_insert(&state_output->plane_list, &dst->link);
if (src->fb)
dst->fb = drm_fb_ref(src->fb);
dst->output_state = state_output;
dst->complete = false;
return dst;
}
/**
* Remove a plane state from an output state; if the plane was previously
* enabled, then replace it with a disabling state. This ensures that the
* output state was untouched from it was before the plane state was
* modified by the caller of this function.
*
* This is required as drm_output_state_get_plane may either allocate a
* new plane state, in which case this function will just perform a matching
* drm_plane_state_free, or it may instead repurpose an existing disabling
* state (if the plane was previously active), in which case this function
* will reset it.
*/
static void
drm_plane_state_put_back(struct drm_plane_state *state)
{
struct drm_output_state *state_output;
struct drm_plane *plane;
if (!state)
return;
state_output = state->output_state;
plane = state->plane;
drm_plane_state_free(state, false);
/* Plane was previously disabled; no need to keep this temporary
* state around. */
if (!plane->state_cur->fb)
return;
(void) drm_plane_state_alloc(state_output, plane);
}
/**
* Given a weston_view, fill the drm_plane_state's co-ordinates to display on
* a given plane.
*/
static void
drm_plane_state_coords_for_view(struct drm_plane_state *state,
struct weston_view *ev)
{
struct drm_output *output = state->output;
pixman_region32_t dest_rect, src_rect;
pixman_box32_t *box, tbox;
float sxf1, syf1, sxf2, syf2;
/* Update the base weston_plane co-ordinates. */
box = pixman_region32_extents(&ev->transform.boundingbox);
state->plane->base.x = box->x1;
state->plane->base.y = box->y1;
/* First calculate the destination co-ordinates by taking the
* area of the view which is visible on this output, performing any
* transforms to account for output rotation and scale as necessary. */
pixman_region32_init(&dest_rect);
pixman_region32_intersect(&dest_rect, &ev->transform.boundingbox,
&output->base.region);
pixman_region32_translate(&dest_rect, -output->base.x, -output->base.y);
box = pixman_region32_extents(&dest_rect);
tbox = weston_transformed_rect(output->base.width,
output->base.height,
output->base.transform,
output->base.current_scale,
*box);
state->dest_x = tbox.x1;
state->dest_y = tbox.y1;
state->dest_w = tbox.x2 - tbox.x1;
state->dest_h = tbox.y2 - tbox.y1;
pixman_region32_fini(&dest_rect);
/* Now calculate the source rectangle, by finding the extents of the
* view, and working backwards to source co-ordinates. */
pixman_region32_init(&src_rect);
pixman_region32_intersect(&src_rect, &ev->transform.boundingbox,
&output->base.region);
box = pixman_region32_extents(&src_rect);
weston_view_from_global_float(ev, box->x1, box->y1, &sxf1, &syf1);
weston_surface_to_buffer_float(ev->surface, sxf1, syf1, &sxf1, &syf1);
weston_view_from_global_float(ev, box->x2, box->y2, &sxf2, &syf2);
weston_surface_to_buffer_float(ev->surface, sxf2, syf2, &sxf2, &syf2);
pixman_region32_fini(&src_rect);
state->src_x = wl_fixed_from_double(sxf1) << 8;
state->src_y = wl_fixed_from_double(syf1) << 8;
state->src_w = wl_fixed_from_double(sxf2 - sxf1) << 8;
state->src_h = wl_fixed_from_double(syf2 - syf1) << 8;
}
static bool
drm_view_is_opaque(struct weston_view *ev)
{
pixman_region32_t r;
bool ret = false;
/* We can scanout an ARGB buffer if the surface's
* opaque region covers the whole output, but we have
* to use XRGB as the KMS format code. */
pixman_region32_init_rect(&r, 0, 0,
ev->surface->width,
ev->surface->height);
pixman_region32_subtract(&r, &r, &ev->surface->opaque);
if (!pixman_region32_not_empty(&r))
ret = true;
pixman_region32_fini(&r);
return ret;
}
static struct drm_fb *
drm_fb_get_from_view(struct drm_output_state *state, struct weston_view *ev)
{
struct drm_output *output = state->output;
struct drm_backend *b = to_drm_backend(output->base.compositor);
struct weston_buffer *buffer = ev->surface->buffer_ref.buffer;
bool is_opaque = drm_view_is_opaque(ev);
struct linux_dmabuf_buffer *dmabuf;
struct drm_fb *fb;
if (ev->alpha != 1.0f)
return NULL;
if (!buffer)
return NULL;
if (wl_shm_buffer_get(buffer->resource))
return NULL;
dmabuf = linux_dmabuf_buffer_get(buffer->resource);
if (dmabuf) {
fb = drm_fb_get_from_dmabuf(dmabuf, b, is_opaque);
if (!fb)
return NULL;
} else {
struct gbm_bo *bo;
if (!b->gbm)
return NULL;
bo = gbm_bo_import(b->gbm, GBM_BO_IMPORT_WL_BUFFER,
buffer->resource, GBM_BO_USE_SCANOUT);
if (!bo)
return NULL;
fb = drm_fb_get_from_bo(bo, b, is_opaque, BUFFER_CLIENT);
if (!fb) {
gbm_bo_destroy(bo);
return NULL;
}
}
drm_fb_set_buffer(fb, buffer);
return fb;
}
/**
* Return a plane state from a drm_output_state.
*/
static struct drm_plane_state *
drm_output_state_get_existing_plane(struct drm_output_state *state_output,
struct drm_plane *plane)
{
struct drm_plane_state *ps;
wl_list_for_each(ps, &state_output->plane_list, link) {
if (ps->plane == plane)
return ps;
}
return NULL;
}
/**
* Return a plane state from a drm_output_state, either existing or
* freshly allocated.
*/
static struct drm_plane_state *
drm_output_state_get_plane(struct drm_output_state *state_output,
struct drm_plane *plane)
{
struct drm_plane_state *ps;
ps = drm_output_state_get_existing_plane(state_output, plane);
if (ps)
return ps;
return drm_plane_state_alloc(state_output, plane);
}
/**
* Allocate a new, empty drm_output_state. This should not generally be used
* in the repaint cycle; see drm_output_state_duplicate.
*/
static struct drm_output_state *
drm_output_state_alloc(struct drm_output *output,
struct drm_pending_state *pending_state)
{
struct drm_output_state *state = zalloc(sizeof(*state));
assert(state);
state->output = output;
state->dpms = WESTON_DPMS_OFF;
state->pending_state = pending_state;
if (pending_state)
wl_list_insert(&pending_state->output_list, &state->link);
else
wl_list_init(&state->link);
wl_list_init(&state->plane_list);
return state;
}
/**
* Duplicate an existing drm_output_state into a new one. This is generally
* used during the repaint cycle, to capture the existing state of an output
* and modify it to create a new state to be used.
*
* The mode determines whether the output will be reset to an a blank state,
* or an exact mirror of the current state.
*/
static struct drm_output_state *
drm_output_state_duplicate(struct drm_output_state *src,
struct drm_pending_state *pending_state,
enum drm_output_state_duplicate_mode plane_mode)
{
struct drm_output_state *dst = malloc(sizeof(*dst));
struct drm_plane_state *ps;
assert(dst);
/* Copy the whole structure, then individually modify the
* pending_state, as well as the list link into our pending
* state. */
*dst = *src;
dst->pending_state = pending_state;
if (pending_state)
wl_list_insert(&pending_state->output_list, &dst->link);
else
wl_list_init(&dst->link);
wl_list_init(&dst->plane_list);
wl_list_for_each(ps, &src->plane_list, link) {
/* Don't carry planes which are now disabled; these should be
* free for other outputs to reuse. */
if (!ps->output)
continue;
if (plane_mode == DRM_OUTPUT_STATE_CLEAR_PLANES)
(void) drm_plane_state_alloc(dst, ps->plane);
else
(void) drm_plane_state_duplicate(dst, ps);
}
return dst;
}
/**
* Free an unused drm_output_state.
*/
static void
drm_output_state_free(struct drm_output_state *state)
{
struct drm_plane_state *ps, *next;
if (!state)
return;
wl_list_for_each_safe(ps, next, &state->plane_list, link)
drm_plane_state_free(ps, false);
wl_list_remove(&state->link);
free(state);
}
/**
* Get output state to disable output
*
* Returns a pointer to an output_state object which can be used to disable
* an output (e.g. DPMS off).
*
* @param pending_state The pending state object owning this update
* @param output The output to disable
* @returns A drm_output_state to disable the output
*/
static struct drm_output_state *
drm_output_get_disable_state(struct drm_pending_state *pending_state,
struct drm_output *output)
{
struct drm_output_state *output_state;
output_state = drm_output_state_duplicate(output->state_cur,
pending_state,
DRM_OUTPUT_STATE_CLEAR_PLANES);
output_state->dpms = WESTON_DPMS_OFF;
return output_state;
}
/**
* Allocate a new drm_pending_state
*
* Allocate a new, empty, 'pending state' structure to be used across a
* repaint cycle or similar.
*
* @param backend DRM backend
* @returns Newly-allocated pending state structure
*/
static struct drm_pending_state *
drm_pending_state_alloc(struct drm_backend *backend)
{
struct drm_pending_state *ret;
ret = calloc(1, sizeof(*ret));
if (!ret)
return NULL;
ret->backend = backend;
wl_list_init(&ret->output_list);
return ret;
}
/**
* Free a drm_pending_state structure
*
* Frees a pending_state structure, as well as any output_states connected
* to this pending state.
*
* @param pending_state Pending state structure to free
*/
static void
drm_pending_state_free(struct drm_pending_state *pending_state)
{
struct drm_output_state *output_state, *tmp;
if (!pending_state)
return;
wl_list_for_each_safe(output_state, tmp, &pending_state->output_list,
link) {
drm_output_state_free(output_state);
}
free(pending_state);
}
/**
* Find an output state in a pending state
*
* Given a pending_state structure, find the output_state for a particular
* output.
*
* @param pending_state Pending state structure to search
* @param output Output to find state for
* @returns Output state if present, or NULL if not
*/
static struct drm_output_state *
drm_pending_state_get_output(struct drm_pending_state *pending_state,
struct drm_output *output)
{
struct drm_output_state *output_state;
wl_list_for_each(output_state, &pending_state->output_list, link) {
if (output_state->output == output)
return output_state;
}
return NULL;
}
static int drm_pending_state_apply_sync(struct drm_pending_state *state);
static int drm_pending_state_test(struct drm_pending_state *state);
/**
* Mark a drm_output_state (the output's last state) as complete. This handles
* any post-completion actions such as updating the repaint timer, disabling the
* output, and finally freeing the state.
*/
static void
drm_output_update_complete(struct drm_output *output, uint32_t flags,
unsigned int sec, unsigned int usec)
{
struct drm_backend *b = to_drm_backend(output->base.compositor);
struct drm_plane_state *ps;
struct timespec ts;
/* Stop the pageflip timer instead of rearming it here */
if (output->pageflip_timer)
wl_event_source_timer_update(output->pageflip_timer, 0);
wl_list_for_each(ps, &output->state_cur->plane_list, link)
ps->complete = true;
drm_output_state_free(output->state_last);
output->state_last = NULL;
if (output->destroy_pending) {
output->destroy_pending = 0;
output->disable_pending = 0;
output->dpms_off_pending = 0;
drm_output_destroy(&output->base);
return;
} else if (output->disable_pending) {
output->disable_pending = 0;
output->dpms_off_pending = 0;
weston_output_disable(&output->base);
return;
} else if (output->dpms_off_pending) {
struct drm_pending_state *pending = drm_pending_state_alloc(b);
output->dpms_off_pending = 0;
drm_output_get_disable_state(pending, output);
drm_pending_state_apply_sync(pending);
return;
} else if (output->state_cur->dpms == WESTON_DPMS_OFF &&
output->base.repaint_status != REPAINT_AWAITING_COMPLETION) {
/* DPMS can happen to us either in the middle of a repaint
* cycle (when we have painted fresh content, only to throw it
* away for DPMS off), or at any other random point. If the
* latter is true, then we cannot go through finish_frame,
* because the repaint machinery does not expect this. */
return;
}
ts.tv_sec = sec;
ts.tv_nsec = usec * 1000;
weston_output_finish_frame(&output->base, &ts, flags);
/* We can't call this from frame_notify, because the output's
* repaint needed flag is cleared just after that */
if (output->recorder)
weston_output_schedule_repaint(&output->base);
}
/**
* 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;
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)
output->atomic_complete_pending = 1;
/* 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;
if (plane->type == WDRM_PLANE_TYPE_OVERLAY)
output->vblank_pending++;
else if (plane->type == WDRM_PLANE_TYPE_PRIMARY)
output->page_flip_pending = 1;
}
}
enum drm_output_propose_state_mode {
DRM_OUTPUT_PROPOSE_STATE_MIXED, /**< mix renderer & planes */
DRM_OUTPUT_PROPOSE_STATE_PLANES_ONLY, /**< only assign to planes */
};
static struct drm_plane_state *
drm_output_prepare_scanout_view(struct drm_output_state *output_state,
struct weston_view *ev,
enum drm_output_propose_state_mode mode)
{
struct drm_output *output = output_state->output;
struct drm_backend *b = to_drm_backend(output->base.compositor);
struct drm_plane *scanout_plane = output->scanout_plane;
struct drm_plane_state *state;
struct drm_plane_state *state_old = NULL;
struct drm_fb *fb;
int ret;
fb = drm_fb_get_from_view(output_state, ev);
if (!fb)
return NULL;
/* Can't change formats with just a pageflip */
if (!b->atomic_modeset && fb->format->format != output->gbm_format) {
drm_fb_unref(fb);
return NULL;
}
state = drm_output_state_get_plane(output_state, scanout_plane);
/* Check if we've already placed a buffer on this plane; if there's a
* buffer there but it comes from GBM, then it's the result of
* drm_output_propose_state placing it here for testing purposes. */
if (state->fb &&
(state->fb->type == BUFFER_GBM_SURFACE ||
state->fb->type == BUFFER_PIXMAN_DUMB)) {
state_old = calloc(1, sizeof(*state_old));
memcpy(state_old, state, sizeof(*state_old));
state_old->output_state = NULL;
wl_list_init(&state_old->link);
} else if (state->fb) {
drm_fb_unref(fb);
return NULL;
}
state->fb = fb;
state->ev = ev;
state->output = output;
drm_plane_state_coords_for_view(state, ev);
/* The legacy API does not let us perform cropping or scaling. */
if (!b->atomic_modeset &&
(state->src_x != 0 || state->src_y != 0 ||
state->src_w != state->dest_w << 16 ||
state->src_h != state->dest_h << 16))
goto err;
if (mode == DRM_OUTPUT_PROPOSE_STATE_PLANES_ONLY) {
drm_plane_state_free(state_old, false);
return state;
}
ret = drm_pending_state_test(output_state->pending_state);
if (ret != 0)
goto err;
drm_plane_state_free(state_old, false);
return state;
err:
drm_plane_state_free(state, false);
if (state_old) {
wl_list_insert(&output_state->plane_list, &state_old->link);
state_old->output_state = output_state;
}
return NULL;
}
static struct drm_fb *
drm_output_render_gl(struct drm_output_state *state, pixman_region32_t *damage)
{
struct drm_output *output = state->output;
struct drm_backend *b = to_drm_backend(output->base.compositor);
struct gbm_bo *bo;
struct drm_fb *ret;
output->base.compositor->renderer->repaint_output(&output->base,
damage);
bo = gbm_surface_lock_front_buffer(output->gbm_surface);
if (!bo) {
weston_log("failed to lock front buffer: %m\n");
return NULL;
}
ret = drm_fb_get_from_bo(bo, b, false, BUFFER_GBM_SURFACE);
if (!ret) {
weston_log("failed to get drm_fb for bo\n");
gbm_surface_release_buffer(output->gbm_surface, bo);
return NULL;
}
ret->gbm_surface = output->gbm_surface;
return ret;
}
static struct drm_fb *
drm_output_render_pixman(struct drm_output_state *state,
pixman_region32_t *damage)
{
struct drm_output *output = state->output;
struct weston_compositor *ec = output->base.compositor;
pixman_region32_t total_damage, previous_damage;
pixman_region32_init(&total_damage);
pixman_region32_init(&previous_damage);
pixman_region32_copy(&previous_damage, damage);
pixman_region32_union(&total_damage, damage, &output->previous_damage);
pixman_region32_copy(&output->previous_damage, &previous_damage);
output->current_image ^= 1;
pixman_renderer_output_set_buffer(&output->base,
output->image[output->current_image]);
ec->renderer->repaint_output(&output->base, &total_damage);
pixman_region32_fini(&total_damage);
pixman_region32_fini(&previous_damage);
return drm_fb_ref(output->dumb[output->current_image]);
}
#if defined(ENABLE_IMXG2D)
static struct drm_fb *
drm_output_render_g2d(struct drm_output_state *state, pixman_region32_t *damage)
{
struct drm_output *output = state->output;
struct weston_compositor *ec = output->base.compositor;
pixman_region32_t total_damage, previous_damage;
pixman_region32_init(&total_damage);
pixman_region32_init(&previous_damage);
pixman_region32_copy(&previous_damage, damage);
pixman_region32_union(&total_damage, damage, &output->previous_damage);
pixman_region32_copy(&output->previous_damage, &previous_damage);
output->current_image ^= 1;
g2d_renderer->output_set_buffer(&output->base,
&output->g2d_image[output->current_image]);
ec->renderer->repaint_output(&output->base, &total_damage);
pixman_region32_fini(&total_damage);
pixman_region32_fini(&previous_damage);
return drm_fb_ref(output->dumb[output->current_image]);
}
#endif
static void
drm_output_render(struct drm_output_state *state, pixman_region32_t *damage)
{
struct drm_output *output = state->output;
struct weston_compositor *c = output->base.compositor;
struct drm_plane_state *scanout_state;
struct drm_plane *scanout_plane = output->scanout_plane;
struct drm_backend *b = to_drm_backend(c);
struct drm_fb *fb;
char *p;
/* If we already have a client buffer promoted to scanout, then we don't
* want to render. */
scanout_state = drm_output_state_get_plane(state,
output->scanout_plane);
if (scanout_state->fb &&
scanout_state->fb->type != BUFFER_GBM_SURFACE &&
scanout_state->fb->type != BUFFER_PIXMAN_DUMB)
return;
if (
#if defined(ENABLE_IMXG2D)
!b->use_g2d &&
#endif
!pixman_region32_not_empty(damage) &&
scanout_plane->state_cur->fb &&
(scanout_plane->state_cur->fb->type == BUFFER_GBM_SURFACE ||
scanout_plane->state_cur->fb->type == BUFFER_PIXMAN_DUMB) &&
scanout_plane->state_cur->fb->width ==
output->base.current_mode->width &&
scanout_plane->state_cur->fb->height ==
output->base.current_mode->height) {
fb = drm_fb_ref(scanout_plane->state_cur->fb);
} else if (b->use_pixman) {
fb = drm_output_render_pixman(state, damage);
}
#if defined(ENABLE_IMXG2D)
else if (b->use_g2d)
fb = drm_output_render_g2d(state, damage);
#endif
#if defined(ENABLE_OPENGL)
else
fb = drm_output_render_gl(state, damage);
#endif
if (!fb) {
drm_plane_state_put_back(scanout_state);
return;
}
drm_fb_unref(scanout_state->fb);
scanout_state->fb = fb;
scanout_state->output = output;
scanout_state->src_x = 0;
scanout_state->src_y = 0;
scanout_state->src_w = output->base.current_mode->width << 16;
scanout_state->src_h = output->base.current_mode->height << 16;
scanout_state->dest_x = 0;
scanout_state->dest_y = 0;
scanout_state->dest_w = scanout_state->src_w >> 16;
scanout_state->dest_h = scanout_state->src_h >> 16;
p = getenv("DESKTOP_SHELL_WINDOW");
if (p) {
uint32_t width, height;
int n;
n = sscanf(p, "%dx%d", &width, &height);
if (n == 2) {
if (scanout_state->src_w > (width << 16))
scanout_state->src_w = width << 16;
if (scanout_state->src_h > (height << 16))
scanout_state->src_h = height << 16;
}
}
pixman_region32_subtract(&c->primary_plane.damage,
&c->primary_plane.damage, damage);
}
static 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_id,
size, r, g, b);
if (rc)
weston_log("set gamma failed: %m\n");
}
/* Determine the type of vblank synchronization to use for the output.
*
* The pipe parameter indicates which CRTC is in use. Knowing this, we
* can determine which vblank sequence type to use for it. Traditional
* cards had only two CRTCs, with CRTC 0 using no special flags, and
* CRTC 1 using DRM_VBLANK_SECONDARY. The first bit of the pipe
* parameter indicates this.
*
* Bits 1-5 of the pipe parameter are 5 bit wide pipe number between
* 0-31. If this is non-zero it indicates we're dealing with a
* multi-gpu situation and we need to calculate the vblank sync
* using DRM_BLANK_HIGH_CRTC_MASK.
*/
static unsigned int
drm_waitvblank_pipe(struct drm_output *output)
{
if (output->pipe > 1)
return (output->pipe << DRM_VBLANK_HIGH_CRTC_SHIFT) &
DRM_VBLANK_HIGH_CRTC_MASK;
else if (output->pipe > 0)
return DRM_VBLANK_SECONDARY;
else
return 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_property_info *dpms_prop =
&output->props_conn[WDRM_CONNECTOR_DPMS];
struct drm_plane_state *scanout_state;
struct drm_plane_state *ps;
struct drm_mode *mode;
struct drm_plane *p;
struct timespec now;
int ret = 0;
/* 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) {
output->cursor_view = NULL;
output->cursor_plane->base.x = INT32_MIN;
output->cursor_plane->base.y = INT32_MIN;
}
if (state->dpms != WESTON_DPMS_ON) {
wl_list_for_each(ps, &state->plane_list, link) {
p = ps->plane;
assert(ps->fb == NULL);
assert(ps->output == NULL);
if (p->type != WDRM_PLANE_TYPE_OVERLAY)
continue;
ret = drmModeSetPlane(backend->drm.fd, p->plane_id,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
if (ret)
weston_log("drmModeSetPlane failed disable: %m\n");
}
if (output->cursor_plane) {
ret = drmModeSetCursor(backend->drm.fd, output->crtc_id,
0, 0, 0);
if (ret)
weston_log("drmModeSetCursor failed disable: %m\n");
}
ret = drmModeSetCrtc(backend->drm.fd, output->crtc_id, 0, 0, 0,
&output->connector_id, 0, NULL);
if (ret)
weston_log("drmModeSetCrtc failed disabling: %m\n");
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->dest_x == 0);
assert(scanout_state->dest_y == 0);
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, output->crtc_id,
scanout_state->fb->fb_id,
0, 0,
&output->connector_id, 1,
&mode->mode_info);
if (ret) {
weston_log("set mode failed: %m\n");
goto err;
}
}
if (drmModePageFlip(backend->drm.fd, output->crtc_id,
scanout_state->fb->fb_id,
DRM_MODE_PAGE_FLIP_EVENT, output) < 0) {
weston_log("queueing pageflip failed: %m\n");
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);
/*
* Now, update all the sprite surfaces
*/
wl_list_for_each(ps, &state->plane_list, link) {
uint32_t flags = 0, fb_id = 0;
drmVBlank vbl = {
.request.type = DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT,
.request.sequence = 1,
};
p = ps->plane;
if (p->type != WDRM_PLANE_TYPE_OVERLAY)
continue;
assert(p->state_cur->complete);
assert(!!p->state_cur->output == !!p->state_cur->fb);
assert(!p->state_cur->output || p->state_cur->output == output);
assert(!ps->complete);
assert(!ps->output || ps->output == output);
assert(!!ps->output == !!ps->fb);
if (ps->fb && !backend->sprites_hidden)
fb_id = ps->fb->fb_id;
ret = drmModeSetPlane(backend->drm.fd, p->plane_id,
output->crtc_id, fb_id, flags,
ps->dest_x, ps->dest_y,
ps->dest_w, ps->dest_h,
ps->src_x, ps->src_y,
ps->src_w, ps->src_h);
if (ret)
weston_log("setplane failed: %d: %s\n",
ret, strerror(errno));
vbl.request.type |= drm_waitvblank_pipe(output);
/*
* Queue a vblank signal so we know when the surface
* becomes active on the display or has been replaced.
*/
vbl.request.signal = (unsigned long) ps;
ret = drmWaitVBlank(backend->drm.fd, &vbl);
if (ret) {
weston_log("vblank event request failed: %d: %s\n",
ret, strerror(errno));
}
}
if (dpms_prop->prop_id && state->dpms != output->state_cur->dpms) {
ret = drmModeConnectorSetProperty(backend->drm.fd,
output->connector_id,
dpms_prop->prop_id,
state->dpms);
if (ret) {
weston_log("DRM: DPMS: failed property set for %s\n",
output->base.name);
}
}
drm_output_assign_state(state, DRM_STATE_APPLY_ASYNC);
return 0;
err:
output->cursor_view = NULL;
drm_output_state_free(state);
return -1;
}
#ifdef HAVE_DRM_ATOMIC
static int
crtc_add_prop(drmModeAtomicReq *req, struct drm_output *output,
enum wdrm_crtc_property prop, uint64_t val)
{
struct drm_property_info *info = &output->props_crtc[prop];
int ret;
if (info->prop_id == 0)
return -1;
ret = drmModeAtomicAddProperty(req, output->crtc_id, info->prop_id,
val);
return (ret <= 0) ? -1 : 0;
}
static int
connector_add_prop(drmModeAtomicReq *req, struct drm_output *output,
enum wdrm_connector_property prop, uint64_t val)
{
struct drm_property_info *info = &output->props_conn[prop];
int ret;
if (info->prop_id == 0)
return -1;
ret = drmModeAtomicAddProperty(req, output->connector_id,
info->prop_id, 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);
return (ret <= 0) ? -1 : 0;
}
static int
drm_mode_ensure_blob(struct drm_backend *backend, struct drm_mode *mode)
{
int ret;
if (mode->blob_id)
return 0;
ret = drmModeCreatePropertyBlob(backend->drm.fd,
&mode->mode_info,
sizeof(mode->mode_info),
&mode->blob_id);
if (ret != 0)
weston_log("failed to create mode property blob: %m\n");
return ret;
}
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 *backend = to_drm_backend(output->base.compositor);
struct drm_plane_state *plane_state;
struct drm_mode *current_mode = to_drm_mode(output->base.current_mode);
int ret = 0;
if (state->dpms != output->state_cur->dpms)
*flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
if (state->dpms == WESTON_DPMS_ON) {
ret = drm_mode_ensure_blob(backend, current_mode);
if (ret != 0)
return ret;
ret |= crtc_add_prop(req, output, WDRM_CRTC_MODE_ID,
current_mode->blob_id);
ret |= crtc_add_prop(req, output, WDRM_CRTC_ACTIVE, 1);
ret |= connector_add_prop(req, output, WDRM_CONNECTOR_CRTC_ID,
output->crtc_id);
} else {
ret |= crtc_add_prop(req, output, WDRM_CRTC_MODE_ID, 0);
ret |= crtc_add_prop(req, output, WDRM_CRTC_ACTIVE, 0);
ret |= connector_add_prop(req, output, WDRM_CONNECTOR_CRTC_ID,
0);
}
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;
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 ? output->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 (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 = 0;
int ret = 0;
if (!req)
return -1;
if (b->state_invalid) {
uint32_t *unused;
int err;
/* 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_array_for_each(unused, &b->unused_connectors) {
struct drm_property_info infos[WDRM_CONNECTOR__COUNT];
struct drm_property_info *info;
drmModeObjectProperties *props;
memset(infos, 0, sizeof(infos));
props = drmModeObjectGetProperties(b->drm.fd,
*unused,
DRM_MODE_OBJECT_CONNECTOR);
if (!props) {
ret = -1;
continue;
}
drm_property_info_populate(b, connector_props, infos,
WDRM_CONNECTOR__COUNT,
props);
drmModeFreeObjectProperties(props);
info = &infos[WDRM_CONNECTOR_CRTC_ID];
err = drmModeAtomicAddProperty(req, *unused,
info->prop_id, 0);
if (err <= 0)
ret = -1;
info = &infos[WDRM_CONNECTOR_DPMS];
if (info->prop_id > 0)
err = drmModeAtomicAddProperty(req, *unused,
info->prop_id,
DRM_MODE_DPMS_OFF);
if (err <= 0)
ret = -1;
drm_property_info_free(infos, WDRM_CONNECTOR__COUNT);
}
wl_array_for_each(unused, &b->unused_crtcs) {
struct drm_property_info infos[WDRM_CRTC__COUNT];
struct drm_property_info *info;
drmModeObjectProperties *props;
uint64_t active;
memset(infos, 0, sizeof(infos));
/* 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,
*unused,
DRM_MODE_OBJECT_CRTC);
if (!props) {
ret = -1;
continue;
}
drm_property_info_populate(b, crtc_props, infos,
WDRM_CRTC__COUNT,
props);
info = &infos[WDRM_CRTC_ACTIVE];
active = drm_property_get_value(info, props, 0);
drmModeFreeObjectProperties(props);
if (active == 0) {
drm_property_info_free(infos, WDRM_CRTC__COUNT);
continue;
}
err = drmModeAtomicAddProperty(req, *unused,
info->prop_id, 0);
if (err <= 0)
ret = -1;
info = &infos[WDRM_CRTC_MODE_ID];
err = drmModeAtomicAddProperty(req, *unused,
info->prop_id, 0);
if (err <= 0)
ret = -1;
drm_property_info_free(infos, WDRM_CRTC__COUNT);
}
/* 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) {
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 (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;
}
switch (mode) {
case DRM_STATE_APPLY_SYNC:
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;
}
ret = drmModeAtomicCommit(b->drm.fd, req, flags, b);
if (mode == DRM_STATE_TEST_ONLY)
return ret;
if (ret != 0) {
weston_log("atomic: couldn't commit new state: %m\n");
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;
}
#endif
/**
* 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.
*/
static int
drm_pending_state_test(struct drm_pending_state *pending_state)
{
#ifdef HAVE_DRM_ATOMIC
struct drm_backend *b = pending_state->backend;
if (b->atomic_modeset)
return drm_pending_state_apply_atomic(pending_state,
DRM_STATE_TEST_ONLY);
#endif
/* We have no way to test state before application on the legacy
* modesetting API, so just claim it succeeded. */
return 0;
}
static 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;
uint32_t *unused;
#ifdef HAVE_DRM_ATOMIC
if (b->atomic_modeset)
return drm_pending_state_apply_atomic(pending_state,
DRM_STATE_APPLY_ASYNC);
#endif
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_array_for_each(unused, &b->unused_crtcs)
drmModeSetCrtc(b->drm.fd, *unused, 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;
ret = drm_output_apply_state_legacy(output_state);
if (ret != 0) {
weston_log("Couldn't apply state for output %s\n",
output->base.name);
}
}
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.
*/
static 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;
uint32_t *unused;
#ifdef HAVE_DRM_ATOMIC
if (b->atomic_modeset)
return drm_pending_state_apply_atomic(pending_state,
DRM_STATE_APPLY_SYNC);
#endif
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_array_for_each(unused, &b->unused_crtcs)
drmModeSetCrtc(b->drm.fd, *unused, 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;
}
static int
drm_output_repaint(struct weston_output *output_base,
pixman_region32_t *damage,
void *repaint_data)
{
struct drm_pending_state *pending_state = repaint_data;
struct drm_output *output = to_drm_output(output_base);
struct drm_backend *backend = to_drm_backend(output_base->compositor);
struct drm_output_state *state = NULL;
struct drm_plane_state *scanout_state;
if (output->disable_pending || output->destroy_pending)
goto err;
assert(!output->state_last);
/* If planes have been disabled in the core, we might not have
* hit assign_planes at all, so might not have valid output state
* here. */
state = drm_pending_state_get_output(pending_state, output);
if (!state)
state = drm_output_state_duplicate(output->state_cur,
pending_state,
DRM_OUTPUT_STATE_CLEAR_PLANES);
state->dpms = WESTON_DPMS_ON;
drm_output_render(state, damage);
scanout_state = drm_output_state_get_plane(state,
output->scanout_plane);
if (!scanout_state || !scanout_state->fb)
goto err;
wl_array_remove_uint32(&backend->unused_connectors,
output->connector_id);
wl_array_remove_uint32(&backend->unused_crtcs, output->crtc_id);
return 0;
err:
drm_output_state_free(state);
return -1;
}
static void
drm_output_start_repaint_loop(struct weston_output *output_base)
{
struct drm_output *output = to_drm_output(output_base);
struct drm_pending_state *pending_state;
struct drm_plane *scanout_plane = output->scanout_plane;
struct drm_backend *backend =
to_drm_backend(output_base->compositor);
struct timespec ts, tnow;
struct timespec vbl2now;
int64_t refresh_nsec;
int ret;
drmVBlank vbl = {
.request.type = DRM_VBLANK_RELATIVE,
.request.sequence = 0,
.request.signal = 0,
};
if (output->disable_pending || output->destroy_pending)
return;
if (!output->scanout_plane->state_cur->fb) {
/* We can't page flip if there's no mode set */
goto finish_frame;
}
/* Need to smash all state in from scratch; current timings might not
* be what we want, page flip might not work, etc.
*/
if (backend->state_invalid)
goto finish_frame;
assert(scanout_plane->state_cur->output == output);
/* Try to get current msc and timestamp via instant query */
vbl.request.type |= drm_waitvblank_pipe(output);
ret = drmWaitVBlank(backend->drm.fd, &vbl);
/* Error ret or zero timestamp means failure to get valid timestamp */
if ((ret == 0) && (vbl.reply.tval_sec > 0 || vbl.reply.tval_usec > 0)) {
ts.tv_sec = vbl.reply.tval_sec;
ts.tv_nsec = vbl.reply.tval_usec * 1000;
/* Valid timestamp for most recent vblank - not stale?
* Stale ts could happen on Linux 3.17+, so make sure it
* is not older than 1 refresh duration since now.
*/
weston_compositor_read_presentation_clock(backend->compositor,
&tnow);
timespec_sub(&vbl2now, &tnow, &ts);
refresh_nsec =
millihz_to_nsec(output->base.current_mode->refresh);
if (timespec_to_nsec(&vbl2now) < refresh_nsec) {
drm_output_update_msc(output, vbl.reply.sequence);
weston_output_finish_frame(output_base, &ts,
WP_PRESENTATION_FEEDBACK_INVALID);
return;
}
}
/* Immediate query didn't provide valid timestamp.
* Use pageflip fallback.
*/
assert(!output->page_flip_pending);
assert(!output->state_last);
pending_state = drm_pending_state_alloc(backend);
drm_output_state_duplicate(output->state_cur, pending_state,
DRM_OUTPUT_STATE_PRESERVE_PLANES);
ret = drm_pending_state_apply(pending_state);
if (ret != 0) {
weston_log("applying repaint-start state failed: %m\n");
goto finish_frame;
}
return;
finish_frame:
/* if we cannot page-flip, immediately finish frame */
weston_output_finish_frame(output_base, NULL,
WP_PRESENTATION_FEEDBACK_INVALID);
}
static 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++;