2068 lines
56 KiB
C
2068 lines
56 KiB
C
#include <assert.h>
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#include <drm_fourcc.h>
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#include <drm_mode.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <strings.h>
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#include <time.h>
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#include <wayland-server-core.h>
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#include <wayland-util.h>
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#include <wlr/backend/interface.h>
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#include <wlr/interfaces/wlr_output.h>
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#include <wlr/render/wlr_renderer.h>
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#include <wlr/util/box.h>
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#include <wlr/util/log.h>
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#include <wlr/util/transform.h>
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#include <xf86drm.h>
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#include <xf86drmMode.h>
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#include "backend/drm/drm.h"
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#include "backend/drm/fb.h"
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#include "backend/drm/iface.h"
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#include "backend/drm/util.h"
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#include "render/pixel_format.h"
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#include "render/drm_format_set.h"
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#include "render/wlr_renderer.h"
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#include "types/wlr_output.h"
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#include "util/env.h"
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#include "config.h"
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#if HAVE_LIBLIFTOFF
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#include <libliftoff.h>
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#endif
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// Output state which needs a KMS commit to be applied
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static const uint32_t COMMIT_OUTPUT_STATE =
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WLR_OUTPUT_STATE_BUFFER |
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WLR_OUTPUT_STATE_MODE |
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WLR_OUTPUT_STATE_ENABLED |
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WLR_OUTPUT_STATE_GAMMA_LUT |
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WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED |
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WLR_OUTPUT_STATE_LAYERS;
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static const uint32_t SUPPORTED_OUTPUT_STATE =
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WLR_OUTPUT_STATE_BACKEND_OPTIONAL | COMMIT_OUTPUT_STATE;
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bool check_drm_features(struct wlr_drm_backend *drm) {
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if (drmGetCap(drm->fd, DRM_CAP_CURSOR_WIDTH, &drm->cursor_width)) {
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drm->cursor_width = 64;
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}
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if (drmGetCap(drm->fd, DRM_CAP_CURSOR_HEIGHT, &drm->cursor_height)) {
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drm->cursor_height = 64;
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}
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uint64_t cap;
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if (drmGetCap(drm->fd, DRM_CAP_PRIME, &cap) ||
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!(cap & DRM_PRIME_CAP_IMPORT)) {
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wlr_log(WLR_ERROR, "PRIME import not supported");
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return false;
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}
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if (drm->parent) {
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if (drmGetCap(drm->parent->fd, DRM_CAP_PRIME, &cap) ||
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!(cap & DRM_PRIME_CAP_EXPORT)) {
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wlr_log(WLR_ERROR,
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"PRIME export not supported on primary GPU");
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return false;
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}
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}
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if (drmSetClientCap(drm->fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1)) {
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wlr_log(WLR_ERROR, "DRM universal planes unsupported");
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return false;
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}
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if (drmGetCap(drm->fd, DRM_CAP_CRTC_IN_VBLANK_EVENT, &cap) || !cap) {
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wlr_log(WLR_ERROR, "DRM_CRTC_IN_VBLANK_EVENT unsupported");
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return false;
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}
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if (drmGetCap(drm->fd, DRM_CAP_TIMESTAMP_MONOTONIC, &cap) || !cap) {
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wlr_log(WLR_ERROR, "DRM_CAP_TIMESTAMP_MONOTONIC unsupported");
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return false;
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}
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if (env_parse_bool("WLR_DRM_FORCE_LIBLIFTOFF")) {
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#if HAVE_LIBLIFTOFF
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wlr_log(WLR_INFO,
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"WLR_DRM_FORCE_LIBLIFTOFF set, forcing libliftoff interface");
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if (drmSetClientCap(drm->fd, DRM_CLIENT_CAP_ATOMIC, 1) != 0) {
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wlr_log_errno(WLR_ERROR, "drmSetClientCap(ATOMIC) failed");
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return false;
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}
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drm->iface = &liftoff_iface;
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#else
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wlr_log(WLR_ERROR, "libliftoff interface not available");
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return false;
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#endif
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} else if (env_parse_bool("WLR_DRM_NO_ATOMIC")) {
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wlr_log(WLR_DEBUG,
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"WLR_DRM_NO_ATOMIC set, forcing legacy DRM interface");
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drm->iface = &legacy_iface;
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} else if (drmSetClientCap(drm->fd, DRM_CLIENT_CAP_ATOMIC, 1)) {
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wlr_log(WLR_DEBUG,
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"Atomic modesetting unsupported, using legacy DRM interface");
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drm->iface = &legacy_iface;
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} else {
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wlr_log(WLR_DEBUG, "Using atomic DRM interface");
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drm->iface = &atomic_iface;
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}
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if (drm->iface == &legacy_iface) {
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drm->supports_tearing_page_flips = drmGetCap(drm->fd, DRM_CAP_ASYNC_PAGE_FLIP, &cap) == 0 && cap == 1;
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} else {
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drm->supports_tearing_page_flips = drmGetCap(drm->fd, DRM_CAP_ATOMIC_ASYNC_PAGE_FLIP, &cap) == 0 && cap == 1;
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}
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if (env_parse_bool("WLR_DRM_NO_MODIFIERS")) {
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wlr_log(WLR_DEBUG, "WLR_DRM_NO_MODIFIERS set, disabling modifiers");
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} else {
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int ret = drmGetCap(drm->fd, DRM_CAP_ADDFB2_MODIFIERS, &cap);
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drm->addfb2_modifiers = ret == 0 && cap == 1;
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wlr_log(WLR_DEBUG, "ADDFB2 modifiers %s",
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drm->addfb2_modifiers ? "supported" : "unsupported");
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}
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return true;
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}
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static bool init_plane(struct wlr_drm_backend *drm,
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struct wlr_drm_plane *p, const drmModePlane *drm_plane) {
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uint32_t id = drm_plane->plane_id;
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union wlr_drm_plane_props props = {0};
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if (!get_drm_plane_props(drm->fd, id, &props)) {
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return false;
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}
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uint64_t type;
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if (!get_drm_prop(drm->fd, id, props.type, &type)) {
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return false;
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}
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p->type = type;
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p->id = drm_plane->plane_id;
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p->props = props;
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p->initial_crtc_id = drm_plane->crtc_id;
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for (size_t i = 0; i < drm_plane->count_formats; ++i) {
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// Force a LINEAR layout for the cursor if the driver doesn't support
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// modifiers
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wlr_drm_format_set_add(&p->formats, drm_plane->formats[i],
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DRM_FORMAT_MOD_LINEAR);
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if (type != DRM_PLANE_TYPE_CURSOR) {
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wlr_drm_format_set_add(&p->formats, drm_plane->formats[i],
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DRM_FORMAT_MOD_INVALID);
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}
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}
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if (p->props.in_formats && drm->addfb2_modifiers) {
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uint64_t blob_id;
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if (!get_drm_prop(drm->fd, p->id, p->props.in_formats, &blob_id)) {
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wlr_log(WLR_ERROR, "Failed to read IN_FORMATS property");
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return false;
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}
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drmModePropertyBlobRes *blob = drmModeGetPropertyBlob(drm->fd, blob_id);
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if (!blob) {
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wlr_log(WLR_ERROR, "Failed to read IN_FORMATS blob");
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return false;
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}
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drmModeFormatModifierIterator iter = {0};
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while (drmModeFormatModifierBlobIterNext(blob, &iter)) {
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wlr_drm_format_set_add(&p->formats, iter.fmt, iter.mod);
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}
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drmModeFreePropertyBlob(blob);
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}
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assert(drm->num_crtcs <= 32);
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for (size_t j = 0; j < drm->num_crtcs; j++) {
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uint32_t crtc_bit = 1 << j;
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if ((drm_plane->possible_crtcs & crtc_bit) == 0) {
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continue;
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}
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struct wlr_drm_crtc *crtc = &drm->crtcs[j];
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if (type == DRM_PLANE_TYPE_PRIMARY && !crtc->primary) {
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crtc->primary = p;
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break;
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}
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if (type == DRM_PLANE_TYPE_CURSOR && !crtc->cursor) {
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crtc->cursor = p;
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break;
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}
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}
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return true;
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}
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static bool init_planes(struct wlr_drm_backend *drm) {
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drmModePlaneRes *plane_res = drmModeGetPlaneResources(drm->fd);
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if (!plane_res) {
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wlr_log_errno(WLR_ERROR, "Failed to get DRM plane resources");
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return false;
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}
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wlr_log(WLR_INFO, "Found %"PRIu32" DRM planes", plane_res->count_planes);
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drm->num_planes = plane_res->count_planes;
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drm->planes = calloc(drm->num_planes, sizeof(*drm->planes));
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if (drm->planes == NULL) {
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wlr_log_errno(WLR_ERROR, "Allocation failed");
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goto error;
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}
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for (uint32_t i = 0; i < plane_res->count_planes; ++i) {
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uint32_t id = plane_res->planes[i];
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drmModePlane *drm_plane = drmModeGetPlane(drm->fd, id);
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if (!drm_plane) {
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wlr_log_errno(WLR_ERROR, "Failed to get DRM plane");
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goto error;
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}
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struct wlr_drm_plane *plane = &drm->planes[i];
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if (!init_plane(drm, plane, drm_plane)) {
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goto error;
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}
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drmModeFreePlane(drm_plane);
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}
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drmModeFreePlaneResources(plane_res);
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return true;
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error:
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free(drm->planes);
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drmModeFreePlaneResources(plane_res);
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return false;
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}
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bool init_drm_resources(struct wlr_drm_backend *drm) {
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drmModeRes *res = drmModeGetResources(drm->fd);
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if (!res) {
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wlr_log_errno(WLR_ERROR, "Failed to get DRM resources");
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return false;
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}
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wlr_log(WLR_INFO, "Found %d DRM CRTCs", res->count_crtcs);
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drm->num_crtcs = res->count_crtcs;
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if (drm->num_crtcs == 0) {
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drmModeFreeResources(res);
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return true;
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}
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drm->crtcs = calloc(drm->num_crtcs, sizeof(drm->crtcs[0]));
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if (!drm->crtcs) {
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wlr_log_errno(WLR_ERROR, "Allocation failed");
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goto error_res;
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}
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for (size_t i = 0; i < drm->num_crtcs; ++i) {
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struct wlr_drm_crtc *crtc = &drm->crtcs[i];
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crtc->id = res->crtcs[i];
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drmModeCrtc *drm_crtc = drmModeGetCrtc(drm->fd, crtc->id);
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if (drm_crtc == NULL) {
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wlr_log_errno(WLR_ERROR, "drmModeGetCrtc failed");
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goto error_res;
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}
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crtc->legacy_gamma_size = drm_crtc->gamma_size;
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drmModeFreeCrtc(drm_crtc);
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if (!get_drm_crtc_props(drm->fd, crtc->id, &crtc->props)) {
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goto error_crtcs;
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}
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wl_list_init(&crtc->layers);
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}
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if (!init_planes(drm)) {
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goto error_crtcs;
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}
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if (drm->iface->init != NULL && !drm->iface->init(drm)) {
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goto error_crtcs;
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}
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drmModeFreeResources(res);
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return true;
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error_crtcs:
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free(drm->crtcs);
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error_res:
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drmModeFreeResources(res);
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return false;
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}
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static void drm_plane_finish_surface(struct wlr_drm_plane *plane) {
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if (!plane) {
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return;
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}
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drm_fb_clear(&plane->queued_fb);
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drm_fb_clear(&plane->current_fb);
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finish_drm_surface(&plane->mgpu_surf);
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}
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void finish_drm_resources(struct wlr_drm_backend *drm) {
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if (!drm) {
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return;
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}
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if (drm->iface->finish != NULL) {
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drm->iface->finish(drm);
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}
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for (size_t i = 0; i < drm->num_crtcs; ++i) {
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struct wlr_drm_crtc *crtc = &drm->crtcs[i];
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if (crtc->mode_id && crtc->own_mode_id) {
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drmModeDestroyPropertyBlob(drm->fd, crtc->mode_id);
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}
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if (crtc->gamma_lut) {
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drmModeDestroyPropertyBlob(drm->fd, crtc->gamma_lut);
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}
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}
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free(drm->crtcs);
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for (size_t i = 0; i < drm->num_planes; ++i) {
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struct wlr_drm_plane *plane = &drm->planes[i];
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drm_plane_finish_surface(plane);
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wlr_drm_format_set_finish(&plane->formats);
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}
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free(drm->planes);
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}
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static struct wlr_drm_connector *get_drm_connector_from_output(
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struct wlr_output *wlr_output) {
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assert(wlr_output_is_drm(wlr_output));
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struct wlr_drm_connector *conn = wl_container_of(wlr_output, conn, output);
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return conn;
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}
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static void layer_handle_addon_destroy(struct wlr_addon *addon) {
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struct wlr_drm_layer *layer = wl_container_of(addon, layer, addon);
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wlr_addon_finish(&layer->addon);
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wl_list_remove(&layer->link);
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#if HAVE_LIBLIFTOFF
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liftoff_layer_destroy(layer->liftoff);
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#endif
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drm_fb_clear(&layer->pending_fb);
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drm_fb_clear(&layer->queued_fb);
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drm_fb_clear(&layer->current_fb);
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free(layer->candidate_planes);
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free(layer);
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}
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const struct wlr_addon_interface layer_impl = {
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.name = "wlr_drm_layer",
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.destroy = layer_handle_addon_destroy,
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};
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struct wlr_drm_layer *get_drm_layer(struct wlr_drm_backend *drm,
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struct wlr_output_layer *wlr_layer) {
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struct wlr_addon *addon =
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wlr_addon_find(&wlr_layer->addons, drm, &layer_impl);
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assert(addon != NULL);
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struct wlr_drm_layer *layer = wl_container_of(addon, layer, addon);
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return layer;
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}
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static struct wlr_drm_layer *get_or_create_layer(struct wlr_drm_backend *drm,
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struct wlr_drm_crtc *crtc, struct wlr_output_layer *wlr_layer) {
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struct wlr_drm_layer *layer;
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struct wlr_addon *addon =
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wlr_addon_find(&wlr_layer->addons, drm, &layer_impl);
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if (addon != NULL) {
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layer = wl_container_of(addon, layer, addon);
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return layer;
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}
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layer = calloc(1, sizeof(*layer));
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if (layer == NULL) {
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return NULL;
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}
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layer->wlr = wlr_layer;
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#if HAVE_LIBLIFTOFF
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layer->liftoff = liftoff_layer_create(crtc->liftoff);
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if (layer->liftoff == NULL) {
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free(layer);
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return NULL;
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}
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#else
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abort(); // unreachable
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#endif
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layer->candidate_planes = calloc(sizeof(bool), drm->num_planes);
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if (layer->candidate_planes == NULL) {
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#if HAVE_LIBLIFTOFF
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liftoff_layer_destroy(layer->liftoff);
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#endif
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free(layer);
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return NULL;
|
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}
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|
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wlr_addon_init(&layer->addon, &wlr_layer->addons, drm, &layer_impl);
|
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wl_list_insert(&crtc->layers, &layer->link);
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return layer;
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}
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|
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static void drm_connector_set_pending_page_flip(struct wlr_drm_connector *conn,
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struct wlr_drm_page_flip *page_flip) {
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if (conn->pending_page_flip != NULL) {
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conn->pending_page_flip->conn = NULL;
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}
|
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conn->pending_page_flip = page_flip;
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}
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|
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void drm_page_flip_destroy(struct wlr_drm_page_flip *page_flip) {
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if (!page_flip) {
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return;
|
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}
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|
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wl_list_remove(&page_flip->link);
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free(page_flip);
|
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}
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|
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static struct wlr_drm_page_flip *drm_page_flip_create(struct wlr_drm_connector *conn) {
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struct wlr_drm_page_flip *page_flip = calloc(1, sizeof(*page_flip));
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if (page_flip == NULL) {
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return NULL;
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}
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page_flip->conn = conn;
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wl_list_insert(&conn->backend->page_flips, &page_flip->link);
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return page_flip;
|
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}
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|
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static bool drm_crtc_commit(struct wlr_drm_connector *conn,
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const struct wlr_drm_connector_state *state,
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uint32_t flags, bool test_only) {
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// Disallow atomic-only flags
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assert((flags & ~DRM_MODE_PAGE_FLIP_FLAGS) == 0);
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struct wlr_drm_page_flip *page_flip = NULL;
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if (flags & DRM_MODE_PAGE_FLIP_EVENT) {
|
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page_flip = drm_page_flip_create(conn);
|
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if (page_flip == NULL) {
|
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return false;
|
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}
|
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}
|
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|
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struct wlr_drm_backend *drm = conn->backend;
|
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struct wlr_drm_crtc *crtc = conn->crtc;
|
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bool ok = drm->iface->crtc_commit(conn, state, page_flip, flags, test_only);
|
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if (ok && !test_only) {
|
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drm_fb_clear(&crtc->primary->queued_fb);
|
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if (state->primary_fb != NULL) {
|
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crtc->primary->queued_fb = drm_fb_lock(state->primary_fb);
|
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}
|
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if (crtc->cursor != NULL && conn->cursor_pending_fb != NULL) {
|
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drm_fb_move(&crtc->cursor->queued_fb, &conn->cursor_pending_fb);
|
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}
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|
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struct wlr_drm_layer *layer;
|
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wl_list_for_each(layer, &crtc->layers, link) {
|
|
drm_fb_move(&layer->queued_fb, &layer->pending_fb);
|
|
}
|
|
|
|
drm_connector_set_pending_page_flip(conn, page_flip);
|
|
|
|
if (state->base->committed & WLR_OUTPUT_STATE_MODE) {
|
|
conn->refresh = calculate_refresh_rate(&state->mode);
|
|
}
|
|
} else {
|
|
// The set_cursor() hook is a bit special: it's not really synchronized
|
|
// to commit() or test(). Once set_cursor() returns true, the new
|
|
// cursor is effectively committed. So don't roll it back here, or we
|
|
// risk ending up in a state where we don't have a cursor FB but
|
|
// wlr_drm_connector.cursor_enabled is true.
|
|
// TODO: fix our output interface to avoid this issue.
|
|
|
|
struct wlr_drm_layer *layer;
|
|
wl_list_for_each(layer, &crtc->layers, link) {
|
|
drm_fb_clear(&layer->pending_fb);
|
|
}
|
|
|
|
drm_page_flip_destroy(page_flip);
|
|
}
|
|
return ok;
|
|
}
|
|
|
|
static void drm_connector_state_init(struct wlr_drm_connector_state *state,
|
|
struct wlr_drm_connector *conn,
|
|
const struct wlr_output_state *base) {
|
|
*state = (struct wlr_drm_connector_state){
|
|
.base = base,
|
|
.modeset = base->allow_reconfiguration,
|
|
.active = output_pending_enabled(&conn->output, base),
|
|
// The wlr_output API requires non-modeset commits with a new buffer to
|
|
// wait for the frame event. However compositors often perform
|
|
// non-modesets commits without a new buffer without waiting for the
|
|
// frame event. In that case we need to make the KMS commit blocking,
|
|
// otherwise the kernel will error out with EBUSY.
|
|
.nonblock = !base->allow_reconfiguration &&
|
|
(base->committed & WLR_OUTPUT_STATE_BUFFER),
|
|
};
|
|
|
|
struct wlr_output_mode *mode = conn->output.current_mode;
|
|
int32_t width = conn->output.width;
|
|
int32_t height = conn->output.height;
|
|
int32_t refresh = conn->output.refresh;
|
|
|
|
if (base->committed & WLR_OUTPUT_STATE_MODE) {
|
|
switch (base->mode_type) {
|
|
case WLR_OUTPUT_STATE_MODE_FIXED:;
|
|
mode = base->mode;
|
|
break;
|
|
case WLR_OUTPUT_STATE_MODE_CUSTOM:
|
|
mode = NULL;
|
|
width = base->custom_mode.width;
|
|
height = base->custom_mode.height;
|
|
refresh = base->custom_mode.refresh;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (mode) {
|
|
struct wlr_drm_mode *drm_mode = wl_container_of(mode, drm_mode, wlr_mode);
|
|
state->mode = drm_mode->drm_mode;
|
|
} else {
|
|
generate_cvt_mode(&state->mode, width, height, (float)refresh / 1000);
|
|
state->mode.type = DRM_MODE_TYPE_USERDEF;
|
|
}
|
|
|
|
if (conn->crtc != NULL) {
|
|
struct wlr_drm_plane *primary = conn->crtc->primary;
|
|
if (primary->queued_fb != NULL) {
|
|
state->primary_fb = drm_fb_lock(primary->queued_fb);
|
|
} else if (primary->current_fb != NULL) {
|
|
state->primary_fb = drm_fb_lock(primary->current_fb);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void drm_connector_state_finish(struct wlr_drm_connector_state *state) {
|
|
drm_fb_clear(&state->primary_fb);
|
|
}
|
|
|
|
static bool drm_connector_state_update_primary_fb(struct wlr_drm_connector *conn,
|
|
struct wlr_drm_connector_state *state) {
|
|
struct wlr_drm_backend *drm = conn->backend;
|
|
|
|
assert(state->base->committed & WLR_OUTPUT_STATE_BUFFER);
|
|
|
|
struct wlr_drm_crtc *crtc = conn->crtc;
|
|
assert(crtc != NULL);
|
|
|
|
struct wlr_drm_plane *plane = crtc->primary;
|
|
struct wlr_buffer *source_buf = state->base->buffer;
|
|
|
|
struct wlr_buffer *local_buf;
|
|
if (drm->parent) {
|
|
struct wlr_drm_format format = {0};
|
|
if (!drm_plane_pick_render_format(plane, &format, &drm->mgpu_renderer)) {
|
|
wlr_log(WLR_ERROR, "Failed to pick primary plane format");
|
|
return false;
|
|
}
|
|
|
|
// TODO: fallback to modifier-less buffer allocation
|
|
bool ok = init_drm_surface(&plane->mgpu_surf, &drm->mgpu_renderer,
|
|
source_buf->width, source_buf->height, &format);
|
|
wlr_drm_format_finish(&format);
|
|
if (!ok) {
|
|
return false;
|
|
}
|
|
|
|
local_buf = drm_surface_blit(&plane->mgpu_surf, source_buf);
|
|
if (local_buf == NULL) {
|
|
return false;
|
|
}
|
|
} else {
|
|
local_buf = wlr_buffer_lock(source_buf);
|
|
}
|
|
|
|
bool ok = drm_fb_import(&state->primary_fb, drm, local_buf,
|
|
&plane->formats);
|
|
wlr_buffer_unlock(local_buf);
|
|
if (!ok) {
|
|
wlr_drm_conn_log(conn, WLR_DEBUG,
|
|
"Failed to import buffer for scan-out");
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool drm_connector_set_pending_layer_fbs(struct wlr_drm_connector *conn,
|
|
const struct wlr_output_state *state) {
|
|
struct wlr_drm_backend *drm = conn->backend;
|
|
|
|
struct wlr_drm_crtc *crtc = conn->crtc;
|
|
if (!crtc || drm->parent) {
|
|
return false;
|
|
}
|
|
|
|
if (!crtc->liftoff) {
|
|
return true; // libliftoff is disabled
|
|
}
|
|
|
|
assert(state->committed & WLR_OUTPUT_STATE_LAYERS);
|
|
|
|
for (size_t i = 0; i < state->layers_len; i++) {
|
|
struct wlr_output_layer_state *layer_state = &state->layers[i];
|
|
struct wlr_drm_layer *layer =
|
|
get_or_create_layer(drm, crtc, layer_state->layer);
|
|
if (!layer) {
|
|
return false;
|
|
}
|
|
|
|
if (layer_state->buffer != NULL) {
|
|
drm_fb_import(&layer->pending_fb, drm, layer_state->buffer, NULL);
|
|
} else {
|
|
drm_fb_clear(&layer->pending_fb);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool drm_connector_alloc_crtc(struct wlr_drm_connector *conn);
|
|
|
|
static bool drm_connector_test(struct wlr_output *output,
|
|
const struct wlr_output_state *state) {
|
|
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
|
|
|
|
if (!conn->backend->session->active) {
|
|
return false;
|
|
}
|
|
|
|
uint32_t unsupported = state->committed & ~SUPPORTED_OUTPUT_STATE;
|
|
if (unsupported != 0) {
|
|
wlr_log(WLR_DEBUG, "Unsupported output state fields: 0x%"PRIx32,
|
|
unsupported);
|
|
return false;
|
|
}
|
|
|
|
if ((state->committed & COMMIT_OUTPUT_STATE) == 0) {
|
|
// This commit doesn't change the KMS state
|
|
return true;
|
|
}
|
|
|
|
if ((state->committed & WLR_OUTPUT_STATE_ENABLED) && state->enabled) {
|
|
if (output->current_mode == NULL &&
|
|
!(state->committed & WLR_OUTPUT_STATE_MODE)) {
|
|
wlr_drm_conn_log(conn, WLR_DEBUG,
|
|
"Can't enable an output without a mode");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (output_pending_enabled(output, state) && !drm_connector_alloc_crtc(conn)) {
|
|
wlr_drm_conn_log(conn, WLR_DEBUG,
|
|
"No CRTC available for this connector");
|
|
return false;
|
|
}
|
|
|
|
bool ok = false;
|
|
struct wlr_drm_connector_state pending = {0};
|
|
drm_connector_state_init(&pending, conn, state);
|
|
|
|
if ((state->committed & WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED) &&
|
|
state->adaptive_sync_enabled &&
|
|
!drm_connector_supports_vrr(conn)) {
|
|
goto out;
|
|
}
|
|
|
|
if (conn->backend->parent) {
|
|
// If we're running as a secondary GPU, we can't perform an atomic
|
|
// commit without blitting a buffer.
|
|
ok = true;
|
|
goto out;
|
|
}
|
|
|
|
if (!conn->crtc) {
|
|
// If the output is disabled, we don't have a crtc even after
|
|
// reallocation
|
|
ok = true;
|
|
goto out;
|
|
}
|
|
|
|
if (state->committed & WLR_OUTPUT_STATE_BUFFER) {
|
|
if (!drm_connector_state_update_primary_fb(conn, &pending)) {
|
|
goto out;
|
|
}
|
|
|
|
if (pending.base->tearing_page_flip && !conn->backend->supports_tearing_page_flips) {
|
|
wlr_log(WLR_ERROR, "Attempted to submit a tearing page flip to an unsupported backend!");
|
|
goto out;
|
|
}
|
|
}
|
|
if (state->committed & WLR_OUTPUT_STATE_LAYERS) {
|
|
if (!drm_connector_set_pending_layer_fbs(conn, pending.base)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (pending.active && !pending.primary_fb) {
|
|
wlr_drm_conn_log(conn, WLR_DEBUG,
|
|
"No primary frame buffer available for this connector");
|
|
goto out;
|
|
}
|
|
|
|
ok = drm_crtc_commit(conn, &pending, 0, true);
|
|
|
|
out:
|
|
drm_connector_state_finish(&pending);
|
|
return ok;
|
|
}
|
|
|
|
bool drm_connector_supports_vrr(struct wlr_drm_connector *conn) {
|
|
struct wlr_drm_backend *drm = conn->backend;
|
|
|
|
struct wlr_drm_crtc *crtc = conn->crtc;
|
|
if (!crtc) {
|
|
return false;
|
|
}
|
|
|
|
uint64_t vrr_capable;
|
|
if (conn->props.vrr_capable == 0 ||
|
|
!get_drm_prop(drm->fd, conn->id, conn->props.vrr_capable,
|
|
&vrr_capable) || !vrr_capable) {
|
|
wlr_drm_conn_log(conn, WLR_DEBUG, "Failed to enable adaptive sync: "
|
|
"connector doesn't support VRR");
|
|
return false;
|
|
}
|
|
|
|
if (crtc->props.vrr_enabled == 0) {
|
|
wlr_drm_conn_log(conn, WLR_DEBUG, "Failed to enable adaptive sync: "
|
|
"CRTC %"PRIu32" doesn't support VRR", crtc->id);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool drm_connector_commit_state(struct wlr_drm_connector *conn,
|
|
const struct wlr_output_state *base) {
|
|
struct wlr_drm_backend *drm = conn->backend;
|
|
|
|
if (!drm->session->active) {
|
|
return false;
|
|
}
|
|
|
|
bool ok = false;
|
|
struct wlr_drm_connector_state pending = {0};
|
|
drm_connector_state_init(&pending, conn, base);
|
|
|
|
if (!pending.active && conn->crtc == NULL) {
|
|
// Disabling an already-disabled connector
|
|
ok = true;
|
|
goto out;
|
|
}
|
|
|
|
if (pending.active) {
|
|
if (!drm_connector_alloc_crtc(conn)) {
|
|
wlr_drm_conn_log(conn, WLR_ERROR,
|
|
"No CRTC available for this connector");
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (pending.base->committed & WLR_OUTPUT_STATE_BUFFER) {
|
|
if (!drm_connector_state_update_primary_fb(conn, &pending)) {
|
|
goto out;
|
|
}
|
|
}
|
|
if (pending.base->committed & WLR_OUTPUT_STATE_LAYERS) {
|
|
if (!drm_connector_set_pending_layer_fbs(conn, pending.base)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (pending.modeset) {
|
|
if (pending.active) {
|
|
wlr_drm_conn_log(conn, WLR_INFO, "Modesetting with %dx%d @ %.3f Hz",
|
|
pending.mode.hdisplay, pending.mode.vdisplay,
|
|
(float)calculate_refresh_rate(&pending.mode) / 1000);
|
|
} else {
|
|
wlr_drm_conn_log(conn, WLR_INFO, "Turning off");
|
|
}
|
|
}
|
|
|
|
// wlr_drm_interface.crtc_commit will perform either a non-blocking
|
|
// page-flip, either a blocking modeset. When performing a blocking modeset
|
|
// we'll wait for all queued page-flips to complete, so we don't need this
|
|
// safeguard.
|
|
if (pending.nonblock && conn->pending_page_flip != NULL) {
|
|
wlr_drm_conn_log(conn, WLR_ERROR, "Failed to page-flip output: "
|
|
"a page-flip is already pending");
|
|
goto out;
|
|
}
|
|
|
|
uint32_t flags = 0;
|
|
if (pending.active) {
|
|
flags |= DRM_MODE_PAGE_FLIP_EVENT;
|
|
}
|
|
if (pending.base->tearing_page_flip) {
|
|
flags |= DRM_MODE_PAGE_FLIP_ASYNC;
|
|
}
|
|
|
|
ok = drm_crtc_commit(conn, &pending, flags, false);
|
|
if (!ok) {
|
|
goto out;
|
|
}
|
|
|
|
if (!pending.active) {
|
|
drm_plane_finish_surface(conn->crtc->primary);
|
|
drm_plane_finish_surface(conn->crtc->cursor);
|
|
drm_fb_clear(&conn->cursor_pending_fb);
|
|
|
|
conn->cursor_enabled = false;
|
|
conn->crtc = NULL;
|
|
}
|
|
|
|
out:
|
|
drm_connector_state_finish(&pending);
|
|
return ok;
|
|
}
|
|
|
|
static bool drm_connector_commit(struct wlr_output *output,
|
|
const struct wlr_output_state *state) {
|
|
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
|
|
|
|
if (!drm_connector_test(output, state)) {
|
|
return false;
|
|
}
|
|
|
|
return drm_connector_commit_state(conn, state);
|
|
}
|
|
|
|
size_t drm_crtc_get_gamma_lut_size(struct wlr_drm_backend *drm,
|
|
struct wlr_drm_crtc *crtc) {
|
|
if (crtc->props.gamma_lut_size == 0 || drm->iface == &legacy_iface) {
|
|
return (size_t)crtc->legacy_gamma_size;
|
|
}
|
|
|
|
uint64_t gamma_lut_size;
|
|
if (!get_drm_prop(drm->fd, crtc->id, crtc->props.gamma_lut_size,
|
|
&gamma_lut_size)) {
|
|
wlr_log(WLR_ERROR, "Unable to get gamma lut size");
|
|
return 0;
|
|
}
|
|
|
|
return gamma_lut_size;
|
|
}
|
|
|
|
static size_t drm_connector_get_gamma_size(struct wlr_output *output) {
|
|
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
|
|
struct wlr_drm_backend *drm = conn->backend;
|
|
struct wlr_drm_crtc *crtc = conn->crtc;
|
|
|
|
if (crtc == NULL) {
|
|
return 0;
|
|
}
|
|
|
|
return drm_crtc_get_gamma_lut_size(drm, crtc);
|
|
}
|
|
|
|
struct wlr_drm_fb *get_next_cursor_fb(struct wlr_drm_connector *conn) {
|
|
if (!conn->cursor_enabled || conn->crtc == NULL) {
|
|
return NULL;
|
|
}
|
|
if (conn->cursor_pending_fb != NULL) {
|
|
return conn->cursor_pending_fb;
|
|
}
|
|
if (conn->crtc->cursor->queued_fb != NULL) {
|
|
return conn->crtc->cursor->queued_fb;
|
|
}
|
|
return conn->crtc->cursor->current_fb;
|
|
}
|
|
|
|
static void realloc_crtcs(struct wlr_drm_backend *drm,
|
|
struct wlr_drm_connector *want_conn);
|
|
|
|
static bool drm_connector_alloc_crtc(struct wlr_drm_connector *conn) {
|
|
if (conn->crtc == NULL) {
|
|
realloc_crtcs(conn->backend, conn);
|
|
}
|
|
bool ok = conn->crtc != NULL;
|
|
if (!ok) {
|
|
wlr_drm_conn_log(conn, WLR_DEBUG, "Failed to find free CRTC");
|
|
}
|
|
return ok;
|
|
}
|
|
|
|
static struct wlr_drm_mode *drm_mode_create(const drmModeModeInfo *modeinfo) {
|
|
struct wlr_drm_mode *mode = calloc(1, sizeof(*mode));
|
|
if (!mode) {
|
|
return NULL;
|
|
}
|
|
|
|
mode->drm_mode = *modeinfo;
|
|
mode->wlr_mode.width = mode->drm_mode.hdisplay;
|
|
mode->wlr_mode.height = mode->drm_mode.vdisplay;
|
|
mode->wlr_mode.refresh = calculate_refresh_rate(modeinfo);
|
|
mode->wlr_mode.picture_aspect_ratio = get_picture_aspect_ratio(modeinfo);
|
|
if (modeinfo->type & DRM_MODE_TYPE_PREFERRED) {
|
|
mode->wlr_mode.preferred = true;
|
|
}
|
|
|
|
return mode;
|
|
}
|
|
|
|
struct wlr_output_mode *wlr_drm_connector_add_mode(struct wlr_output *output,
|
|
const drmModeModeInfo *modeinfo) {
|
|
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
|
|
|
|
if (modeinfo->type != DRM_MODE_TYPE_USERDEF) {
|
|
return NULL;
|
|
}
|
|
|
|
struct wlr_output_mode *wlr_mode;
|
|
wl_list_for_each(wlr_mode, &conn->output.modes, link) {
|
|
struct wlr_drm_mode *mode = wl_container_of(wlr_mode, mode, wlr_mode);
|
|
if (memcmp(&mode->drm_mode, modeinfo, sizeof(*modeinfo)) == 0) {
|
|
return wlr_mode;
|
|
}
|
|
}
|
|
|
|
struct wlr_drm_mode *mode = drm_mode_create(modeinfo);
|
|
if (!mode) {
|
|
return NULL;
|
|
}
|
|
|
|
wl_list_insert(&conn->output.modes, &mode->wlr_mode.link);
|
|
|
|
wlr_drm_conn_log(conn, WLR_INFO, "Registered custom mode "
|
|
"%"PRId32"x%"PRId32"@%"PRId32,
|
|
mode->wlr_mode.width, mode->wlr_mode.height,
|
|
mode->wlr_mode.refresh);
|
|
|
|
return &mode->wlr_mode;
|
|
}
|
|
|
|
const drmModeModeInfo *wlr_drm_mode_get_info(struct wlr_output_mode *wlr_mode) {
|
|
const struct wlr_drm_mode *mode = wl_container_of(wlr_mode, mode, wlr_mode);
|
|
return &mode->drm_mode;
|
|
}
|
|
|
|
static bool drm_connector_set_cursor(struct wlr_output *output,
|
|
struct wlr_buffer *buffer, int hotspot_x, int hotspot_y) {
|
|
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
|
|
struct wlr_drm_backend *drm = conn->backend;
|
|
struct wlr_drm_crtc *crtc = conn->crtc;
|
|
|
|
if (!crtc) {
|
|
return false;
|
|
}
|
|
|
|
struct wlr_drm_plane *plane = crtc->cursor;
|
|
if (plane == NULL) {
|
|
return false;
|
|
}
|
|
|
|
if (conn->cursor_hotspot_x != hotspot_x ||
|
|
conn->cursor_hotspot_y != hotspot_y) {
|
|
// Update cursor hotspot
|
|
conn->cursor_x -= hotspot_x - conn->cursor_hotspot_x;
|
|
conn->cursor_y -= hotspot_y - conn->cursor_hotspot_y;
|
|
conn->cursor_hotspot_x = hotspot_x;
|
|
conn->cursor_hotspot_y = hotspot_y;
|
|
}
|
|
|
|
conn->cursor_enabled = false;
|
|
if (buffer != NULL) {
|
|
if ((uint64_t)buffer->width != drm->cursor_width ||
|
|
(uint64_t)buffer->height != drm->cursor_height) {
|
|
wlr_drm_conn_log(conn, WLR_DEBUG, "Cursor buffer size mismatch");
|
|
return false;
|
|
}
|
|
|
|
struct wlr_buffer *local_buf;
|
|
if (drm->parent) {
|
|
struct wlr_drm_format format = {0};
|
|
if (!drm_plane_pick_render_format(plane, &format, &drm->mgpu_renderer)) {
|
|
wlr_log(WLR_ERROR, "Failed to pick cursor plane format");
|
|
return false;
|
|
}
|
|
|
|
bool ok = init_drm_surface(&plane->mgpu_surf, &drm->mgpu_renderer,
|
|
buffer->width, buffer->height, &format);
|
|
wlr_drm_format_finish(&format);
|
|
if (!ok) {
|
|
return false;
|
|
}
|
|
|
|
local_buf = drm_surface_blit(&plane->mgpu_surf, buffer);
|
|
if (local_buf == NULL) {
|
|
return false;
|
|
}
|
|
} else {
|
|
local_buf = wlr_buffer_lock(buffer);
|
|
}
|
|
|
|
bool ok = drm_fb_import(&conn->cursor_pending_fb, drm, local_buf,
|
|
&plane->formats);
|
|
wlr_buffer_unlock(local_buf);
|
|
if (!ok) {
|
|
return false;
|
|
}
|
|
|
|
conn->cursor_enabled = true;
|
|
conn->cursor_width = buffer->width;
|
|
conn->cursor_height = buffer->height;
|
|
}
|
|
|
|
wlr_output_update_needs_frame(output);
|
|
return true;
|
|
}
|
|
|
|
static bool drm_connector_move_cursor(struct wlr_output *output,
|
|
int x, int y) {
|
|
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
|
|
if (!conn->crtc) {
|
|
return false;
|
|
}
|
|
struct wlr_drm_plane *plane = conn->crtc->cursor;
|
|
if (!plane) {
|
|
return false;
|
|
}
|
|
|
|
struct wlr_box box = { .x = x, .y = y };
|
|
|
|
int width, height;
|
|
wlr_output_transformed_resolution(output, &width, &height);
|
|
|
|
enum wl_output_transform transform =
|
|
wlr_output_transform_invert(output->transform);
|
|
wlr_box_transform(&box, &box, transform, width, height);
|
|
|
|
box.x -= conn->cursor_hotspot_x;
|
|
box.y -= conn->cursor_hotspot_y;
|
|
|
|
conn->cursor_x = box.x;
|
|
conn->cursor_y = box.y;
|
|
|
|
wlr_output_update_needs_frame(output);
|
|
return true;
|
|
}
|
|
|
|
bool drm_connector_is_cursor_visible(struct wlr_drm_connector *conn) {
|
|
return conn->cursor_enabled &&
|
|
conn->cursor_x < conn->output.width &&
|
|
conn->cursor_y < conn->output.height &&
|
|
conn->cursor_x + conn->cursor_width >= 0 &&
|
|
conn->cursor_y + conn->cursor_height >= 0;
|
|
}
|
|
|
|
static void dealloc_crtc(struct wlr_drm_connector *conn);
|
|
|
|
/**
|
|
* Destroy the compositor-facing part of a connector.
|
|
*
|
|
* The connector isn't destroyed when disconnected. Only the compositor-facing
|
|
* wlr_output interface is cleaned up.
|
|
*/
|
|
static void drm_connector_destroy_output(struct wlr_output *output) {
|
|
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
|
|
|
|
dealloc_crtc(conn);
|
|
|
|
conn->status = DRM_MODE_DISCONNECTED;
|
|
drm_connector_set_pending_page_flip(conn, NULL);
|
|
|
|
struct wlr_drm_mode *mode, *mode_tmp;
|
|
wl_list_for_each_safe(mode, mode_tmp, &conn->output.modes, wlr_mode.link) {
|
|
wl_list_remove(&mode->wlr_mode.link);
|
|
free(mode);
|
|
}
|
|
|
|
conn->output = (struct wlr_output){0};
|
|
}
|
|
|
|
static const struct wlr_drm_format_set *drm_connector_get_cursor_formats(
|
|
struct wlr_output *output, uint32_t buffer_caps) {
|
|
if (!(buffer_caps & WLR_BUFFER_CAP_DMABUF)) {
|
|
return NULL;
|
|
}
|
|
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
|
|
if (!drm_connector_alloc_crtc(conn)) {
|
|
return NULL;
|
|
}
|
|
struct wlr_drm_plane *plane = conn->crtc->cursor;
|
|
if (!plane) {
|
|
return NULL;
|
|
}
|
|
if (conn->backend->parent) {
|
|
return &conn->backend->mgpu_formats;
|
|
}
|
|
return &plane->formats;
|
|
}
|
|
|
|
static void drm_connector_get_cursor_size(struct wlr_output *output,
|
|
int *width, int *height) {
|
|
struct wlr_drm_backend *drm = get_drm_backend_from_backend(output->backend);
|
|
*width = (int)drm->cursor_width;
|
|
*height = (int)drm->cursor_height;
|
|
}
|
|
|
|
static const struct wlr_drm_format_set *drm_connector_get_primary_formats(
|
|
struct wlr_output *output, uint32_t buffer_caps) {
|
|
if (!(buffer_caps & WLR_BUFFER_CAP_DMABUF)) {
|
|
return NULL;
|
|
}
|
|
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
|
|
if (!drm_connector_alloc_crtc(conn)) {
|
|
return NULL;
|
|
}
|
|
if (conn->backend->parent) {
|
|
return &conn->backend->mgpu_formats;
|
|
}
|
|
return &conn->crtc->primary->formats;
|
|
}
|
|
|
|
static const struct wlr_output_impl output_impl = {
|
|
.set_cursor = drm_connector_set_cursor,
|
|
.move_cursor = drm_connector_move_cursor,
|
|
.destroy = drm_connector_destroy_output,
|
|
.test = drm_connector_test,
|
|
.commit = drm_connector_commit,
|
|
.get_gamma_size = drm_connector_get_gamma_size,
|
|
.get_cursor_formats = drm_connector_get_cursor_formats,
|
|
.get_cursor_size = drm_connector_get_cursor_size,
|
|
.get_primary_formats = drm_connector_get_primary_formats,
|
|
};
|
|
|
|
bool wlr_output_is_drm(struct wlr_output *output) {
|
|
return output->impl == &output_impl;
|
|
}
|
|
|
|
uint32_t wlr_drm_connector_get_id(struct wlr_output *output) {
|
|
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
|
|
return conn->id;
|
|
}
|
|
|
|
enum wl_output_transform wlr_drm_connector_get_panel_orientation(
|
|
struct wlr_output *output) {
|
|
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
|
|
if (!conn->props.panel_orientation) {
|
|
return WL_OUTPUT_TRANSFORM_NORMAL;
|
|
}
|
|
|
|
char *orientation = get_drm_prop_enum(conn->backend->fd, conn->id,
|
|
conn->props.panel_orientation);
|
|
if (orientation == NULL) {
|
|
return WL_OUTPUT_TRANSFORM_NORMAL;
|
|
}
|
|
|
|
enum wl_output_transform tr;
|
|
if (strcmp(orientation, "Normal") == 0) {
|
|
tr = WL_OUTPUT_TRANSFORM_NORMAL;
|
|
} else if (strcmp(orientation, "Left Side Up") == 0) {
|
|
tr = WL_OUTPUT_TRANSFORM_90;
|
|
} else if (strcmp(orientation, "Upside Down") == 0) {
|
|
tr = WL_OUTPUT_TRANSFORM_180;
|
|
} else if (strcmp(orientation, "Right Side Up") == 0) {
|
|
tr = WL_OUTPUT_TRANSFORM_270;
|
|
} else {
|
|
wlr_drm_conn_log(conn, WLR_ERROR, "Unknown panel orientation: %s", orientation);
|
|
tr = WL_OUTPUT_TRANSFORM_NORMAL;
|
|
}
|
|
|
|
free(orientation);
|
|
return tr;
|
|
}
|
|
|
|
static const int32_t subpixel_map[] = {
|
|
[DRM_MODE_SUBPIXEL_UNKNOWN] = WL_OUTPUT_SUBPIXEL_UNKNOWN,
|
|
[DRM_MODE_SUBPIXEL_HORIZONTAL_RGB] = WL_OUTPUT_SUBPIXEL_HORIZONTAL_RGB,
|
|
[DRM_MODE_SUBPIXEL_HORIZONTAL_BGR] = WL_OUTPUT_SUBPIXEL_HORIZONTAL_BGR,
|
|
[DRM_MODE_SUBPIXEL_VERTICAL_RGB] = WL_OUTPUT_SUBPIXEL_VERTICAL_RGB,
|
|
[DRM_MODE_SUBPIXEL_VERTICAL_BGR] = WL_OUTPUT_SUBPIXEL_VERTICAL_BGR,
|
|
[DRM_MODE_SUBPIXEL_NONE] = WL_OUTPUT_SUBPIXEL_NONE,
|
|
};
|
|
|
|
static void dealloc_crtc(struct wlr_drm_connector *conn) {
|
|
if (conn->crtc == NULL) {
|
|
return;
|
|
}
|
|
|
|
wlr_drm_conn_log(conn, WLR_DEBUG, "De-allocating CRTC %" PRIu32,
|
|
conn->crtc->id);
|
|
|
|
struct wlr_output_state state;
|
|
wlr_output_state_init(&state);
|
|
wlr_output_state_set_enabled(&state, false);
|
|
if (!drm_connector_commit_state(conn, &state)) {
|
|
// On GPU unplug, disabling the CRTC can fail with EPERM
|
|
wlr_drm_conn_log(conn, WLR_ERROR, "Failed to disable CRTC %"PRIu32,
|
|
conn->crtc->id);
|
|
}
|
|
wlr_output_state_finish(&state);
|
|
}
|
|
|
|
static void format_nullable_crtc(char *str, size_t size, struct wlr_drm_crtc *crtc) {
|
|
if (crtc != NULL) {
|
|
snprintf(str, size, "CRTC %"PRIu32, crtc->id);
|
|
} else {
|
|
snprintf(str, size, "no CRTC");
|
|
}
|
|
}
|
|
|
|
static void realloc_crtcs(struct wlr_drm_backend *drm,
|
|
struct wlr_drm_connector *want_conn) {
|
|
assert(drm->num_crtcs > 0);
|
|
|
|
size_t num_connectors = wl_list_length(&drm->connectors);
|
|
if (num_connectors == 0) {
|
|
return;
|
|
}
|
|
|
|
wlr_log(WLR_DEBUG, "Reallocating CRTCs");
|
|
|
|
struct wlr_drm_connector *connectors[num_connectors];
|
|
uint32_t connector_constraints[num_connectors];
|
|
uint32_t previous_match[drm->num_crtcs];
|
|
uint32_t new_match[drm->num_crtcs];
|
|
|
|
for (size_t i = 0; i < drm->num_crtcs; ++i) {
|
|
previous_match[i] = UNMATCHED;
|
|
}
|
|
|
|
size_t i = 0;
|
|
struct wlr_drm_connector *conn;
|
|
wl_list_for_each(conn, &drm->connectors, link) {
|
|
connectors[i] = conn;
|
|
|
|
if (conn->crtc) {
|
|
previous_match[conn->crtc - drm->crtcs] = i;
|
|
}
|
|
|
|
// Only request a CRTC if the connected is currently enabled or it's the
|
|
// connector the user wants to enable
|
|
bool want_crtc = conn == want_conn || conn->output.enabled;
|
|
|
|
if (conn->status == DRM_MODE_CONNECTED && want_crtc) {
|
|
connector_constraints[i] = conn->possible_crtcs;
|
|
} else {
|
|
// Will always fail to match anything
|
|
connector_constraints[i] = 0;
|
|
}
|
|
|
|
++i;
|
|
}
|
|
|
|
match_obj(num_connectors, connector_constraints,
|
|
drm->num_crtcs, previous_match, new_match);
|
|
|
|
// Converts our crtc=>connector result into a connector=>crtc one.
|
|
struct wlr_drm_crtc *connector_match[num_connectors];
|
|
for (size_t i = 0 ; i < num_connectors; ++i) {
|
|
connector_match[i] = NULL;
|
|
}
|
|
for (size_t i = 0; i < drm->num_crtcs; ++i) {
|
|
if (new_match[i] != UNMATCHED) {
|
|
connector_match[new_match[i]] = &drm->crtcs[i];
|
|
}
|
|
}
|
|
|
|
for (size_t i = 0; i < num_connectors; ++i) {
|
|
struct wlr_drm_connector *conn = connectors[i];
|
|
struct wlr_drm_crtc *new_crtc = connector_match[i];
|
|
|
|
char old_crtc_str[16], new_crtc_str[16];
|
|
format_nullable_crtc(old_crtc_str, sizeof(old_crtc_str), conn->crtc);
|
|
format_nullable_crtc(new_crtc_str, sizeof(new_crtc_str), new_crtc);
|
|
|
|
char crtc_str[64];
|
|
if (conn->crtc != new_crtc) {
|
|
snprintf(crtc_str, sizeof(crtc_str), "%s → %s", old_crtc_str, new_crtc_str);
|
|
} else {
|
|
snprintf(crtc_str, sizeof(crtc_str), "%s (no change)", new_crtc_str);
|
|
}
|
|
|
|
wlr_log(WLR_DEBUG, " Connector %s (%s%s): %s",
|
|
conn->name, drm_connector_status_str(conn->status),
|
|
connector_constraints[i] != 0 ? ", needs CRTC" : "",
|
|
crtc_str);
|
|
}
|
|
|
|
// Refuse to remove a CRTC from an enabled connector, and refuse to
|
|
// change the CRTC of an enabled connector.
|
|
for (size_t i = 0; i < num_connectors; ++i) {
|
|
struct wlr_drm_connector *conn = connectors[i];
|
|
if (conn->status != DRM_MODE_CONNECTED || !conn->output.enabled) {
|
|
continue;
|
|
}
|
|
if (connector_match[i] == NULL) {
|
|
wlr_log(WLR_DEBUG, "Could not match a CRTC for previously connected output; "
|
|
"keeping old configuration");
|
|
return;
|
|
}
|
|
assert(conn->crtc != NULL);
|
|
if (connector_match[i] != conn->crtc) {
|
|
wlr_log(WLR_DEBUG, "Cannot switch CRTC for enabled output; "
|
|
"keeping old configuration");
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Apply new configuration
|
|
for (size_t i = 0; i < num_connectors; ++i) {
|
|
struct wlr_drm_connector *conn = connectors[i];
|
|
|
|
if (conn->crtc != NULL && connector_match[i]) {
|
|
// We don't need to change anything
|
|
continue;
|
|
}
|
|
|
|
dealloc_crtc(conn);
|
|
if (connector_match[i] != NULL) {
|
|
conn->crtc = connector_match[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
static struct wlr_drm_crtc *connector_get_current_crtc(
|
|
struct wlr_drm_connector *wlr_conn, const drmModeConnector *drm_conn) {
|
|
struct wlr_drm_backend *drm = wlr_conn->backend;
|
|
|
|
uint32_t crtc_id = 0;
|
|
if (wlr_conn->props.crtc_id != 0) {
|
|
uint64_t value;
|
|
if (!get_drm_prop(drm->fd, wlr_conn->id,
|
|
wlr_conn->props.crtc_id, &value)) {
|
|
wlr_drm_conn_log(wlr_conn, WLR_ERROR,
|
|
"Failed to get CRTC_ID connector property");
|
|
return NULL;
|
|
}
|
|
crtc_id = (uint32_t)value;
|
|
} else if (drm_conn->encoder_id != 0) {
|
|
// Fallback to the legacy API
|
|
drmModeEncoder *enc = drmModeGetEncoder(drm->fd, drm_conn->encoder_id);
|
|
if (enc == NULL) {
|
|
wlr_drm_conn_log(wlr_conn, WLR_ERROR,
|
|
"drmModeGetEncoder() failed");
|
|
return NULL;
|
|
}
|
|
crtc_id = enc->crtc_id;
|
|
drmModeFreeEncoder(enc);
|
|
}
|
|
if (crtc_id == 0) {
|
|
return NULL;
|
|
}
|
|
|
|
for (size_t i = 0; i < drm->num_crtcs; ++i) {
|
|
if (drm->crtcs[i].id == crtc_id) {
|
|
return &drm->crtcs[i];
|
|
}
|
|
}
|
|
|
|
wlr_drm_conn_log(wlr_conn, WLR_ERROR,
|
|
"Failed to find current CRTC ID %" PRIu32, crtc_id);
|
|
return NULL;
|
|
}
|
|
|
|
static struct wlr_drm_connector *create_drm_connector(struct wlr_drm_backend *drm,
|
|
const drmModeConnector *drm_conn) {
|
|
struct wlr_drm_connector *wlr_conn = calloc(1, sizeof(*wlr_conn));
|
|
if (!wlr_conn) {
|
|
wlr_log_errno(WLR_ERROR, "Allocation failed");
|
|
return NULL;
|
|
}
|
|
|
|
wlr_conn->backend = drm;
|
|
wlr_conn->status = DRM_MODE_DISCONNECTED;
|
|
wlr_conn->id = drm_conn->connector_id;
|
|
|
|
if (!get_drm_connector_props(drm->fd, wlr_conn->id, &wlr_conn->props)) {
|
|
free(wlr_conn);
|
|
return false;
|
|
}
|
|
|
|
const char *conn_name =
|
|
drmModeGetConnectorTypeName(drm_conn->connector_type);
|
|
if (conn_name == NULL) {
|
|
conn_name = "Unknown";
|
|
}
|
|
|
|
snprintf(wlr_conn->name, sizeof(wlr_conn->name),
|
|
"%s-%"PRIu32, conn_name, drm_conn->connector_type_id);
|
|
|
|
wlr_conn->possible_crtcs =
|
|
drmModeConnectorGetPossibleCrtcs(drm->fd, drm_conn);
|
|
if (wlr_conn->possible_crtcs == 0) {
|
|
wlr_drm_conn_log(wlr_conn, WLR_ERROR, "No CRTC possible");
|
|
}
|
|
|
|
wlr_conn->crtc = connector_get_current_crtc(wlr_conn, drm_conn);
|
|
|
|
wl_list_insert(drm->connectors.prev, &wlr_conn->link);
|
|
return wlr_conn;
|
|
}
|
|
|
|
static drmModeModeInfo *connector_get_current_mode(struct wlr_drm_connector *wlr_conn) {
|
|
struct wlr_drm_backend *drm = wlr_conn->backend;
|
|
|
|
if (wlr_conn->crtc == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
if (wlr_conn->crtc->props.mode_id != 0) {
|
|
size_t size = 0;
|
|
drmModeModeInfo *mode = get_drm_prop_blob(drm->fd, wlr_conn->crtc->id,
|
|
wlr_conn->crtc->props.mode_id, &size);
|
|
assert(mode == NULL || size == sizeof(*mode));
|
|
return mode;
|
|
} else {
|
|
// Fallback to the legacy API
|
|
drmModeCrtc *drm_crtc = drmModeGetCrtc(drm->fd, wlr_conn->crtc->id);
|
|
if (drm_crtc == NULL) {
|
|
wlr_log_errno(WLR_ERROR, "drmModeGetCrtc failed");
|
|
return NULL;
|
|
}
|
|
if (!drm_crtc->mode_valid) {
|
|
drmModeFreeCrtc(drm_crtc);
|
|
return NULL;
|
|
}
|
|
drmModeModeInfo *mode = malloc(sizeof(*mode));
|
|
if (mode == NULL) {
|
|
wlr_log_errno(WLR_ERROR, "Allocation failed");
|
|
drmModeFreeCrtc(drm_crtc);
|
|
return NULL;
|
|
}
|
|
*mode = drm_crtc->mode;
|
|
drmModeFreeCrtc(drm_crtc);
|
|
return mode;
|
|
}
|
|
}
|
|
|
|
static bool connect_drm_connector(struct wlr_drm_connector *wlr_conn,
|
|
const drmModeConnector *drm_conn) {
|
|
struct wlr_drm_backend *drm = wlr_conn->backend;
|
|
struct wlr_output *output = &wlr_conn->output;
|
|
|
|
wlr_log(WLR_DEBUG, "Current CRTC: %d",
|
|
wlr_conn->crtc ? (int)wlr_conn->crtc->id : -1);
|
|
|
|
// keep track of all the modes ourselves first. We must only fill out
|
|
// the modes list after wlr_output_init()
|
|
struct wl_list modes;
|
|
wl_list_init(&modes);
|
|
|
|
struct wlr_output_state state;
|
|
wlr_output_state_init(&state);
|
|
wlr_output_state_set_enabled(&state, wlr_conn->crtc != NULL);
|
|
|
|
drmModeModeInfo *current_modeinfo = connector_get_current_mode(wlr_conn);
|
|
|
|
wlr_log(WLR_INFO, "Detected modes:");
|
|
|
|
for (int i = 0; i < drm_conn->count_modes; ++i) {
|
|
if (drm_conn->modes[i].flags & DRM_MODE_FLAG_INTERLACE) {
|
|
continue;
|
|
}
|
|
|
|
struct wlr_drm_mode *mode = drm_mode_create(&drm_conn->modes[i]);
|
|
if (!mode) {
|
|
wlr_log_errno(WLR_ERROR, "Allocation failed");
|
|
free(current_modeinfo);
|
|
wlr_output_state_finish(&state);
|
|
return false;
|
|
}
|
|
|
|
// If this is the current mode set on the conn's crtc,
|
|
// then set it as the conn's output current mode.
|
|
if (current_modeinfo != NULL && memcmp(&mode->drm_mode,
|
|
current_modeinfo, sizeof(*current_modeinfo)) == 0) {
|
|
wlr_output_state_set_mode(&state, &mode->wlr_mode);
|
|
|
|
uint64_t mode_id = 0;
|
|
get_drm_prop(drm->fd, wlr_conn->crtc->id,
|
|
wlr_conn->crtc->props.mode_id, &mode_id);
|
|
|
|
wlr_conn->crtc->own_mode_id = false;
|
|
wlr_conn->crtc->mode_id = mode_id;
|
|
wlr_conn->refresh = calculate_refresh_rate(current_modeinfo);
|
|
}
|
|
|
|
wlr_log(WLR_INFO, " %"PRId32"x%"PRId32" @ %.3f Hz %s",
|
|
mode->wlr_mode.width, mode->wlr_mode.height,
|
|
(float)mode->wlr_mode.refresh / 1000,
|
|
mode->wlr_mode.preferred ? "(preferred)" : "");
|
|
|
|
wl_list_insert(modes.prev, &mode->wlr_mode.link);
|
|
}
|
|
|
|
free(current_modeinfo);
|
|
|
|
wlr_output_init(output, &drm->backend, &output_impl, drm->session->event_loop, &state);
|
|
wlr_output_state_finish(&state);
|
|
|
|
// fill out the modes
|
|
wl_list_insert_list(&output->modes, &modes);
|
|
|
|
wlr_output_set_name(output, wlr_conn->name);
|
|
|
|
output->phys_width = drm_conn->mmWidth;
|
|
output->phys_height = drm_conn->mmHeight;
|
|
wlr_log(WLR_INFO, "Physical size: %"PRId32"x%"PRId32,
|
|
output->phys_width, output->phys_height);
|
|
if (drm_conn->subpixel < sizeof(subpixel_map) / sizeof(subpixel_map[0])) {
|
|
output->subpixel = subpixel_map[drm_conn->subpixel];
|
|
} else {
|
|
wlr_log(WLR_ERROR, "Unknown subpixel value: %d", (int)drm_conn->subpixel);
|
|
}
|
|
|
|
uint64_t non_desktop;
|
|
if (get_drm_prop(drm->fd, wlr_conn->id,
|
|
wlr_conn->props.non_desktop, &non_desktop)) {
|
|
if (non_desktop == 1) {
|
|
wlr_log(WLR_INFO, "Non-desktop connector");
|
|
}
|
|
output->non_desktop = non_desktop;
|
|
}
|
|
|
|
memset(wlr_conn->max_bpc_bounds, 0, sizeof(wlr_conn->max_bpc_bounds));
|
|
if (wlr_conn->props.max_bpc != 0) {
|
|
if (!introspect_drm_prop_range(drm->fd, wlr_conn->props.max_bpc,
|
|
&wlr_conn->max_bpc_bounds[0], &wlr_conn->max_bpc_bounds[1])) {
|
|
wlr_log(WLR_ERROR, "Failed to introspect 'max bpc' property");
|
|
}
|
|
}
|
|
|
|
size_t edid_len = 0;
|
|
uint8_t *edid = get_drm_prop_blob(drm->fd,
|
|
wlr_conn->id, wlr_conn->props.edid, &edid_len);
|
|
parse_edid(wlr_conn, edid_len, edid);
|
|
free(edid);
|
|
|
|
char *subconnector = NULL;
|
|
if (wlr_conn->props.subconnector) {
|
|
subconnector = get_drm_prop_enum(drm->fd,
|
|
wlr_conn->id, wlr_conn->props.subconnector);
|
|
}
|
|
if (subconnector && strcmp(subconnector, "Native") == 0) {
|
|
free(subconnector);
|
|
subconnector = NULL;
|
|
}
|
|
|
|
char description[128];
|
|
snprintf(description, sizeof(description), "%s %s%s%s (%s%s%s)",
|
|
output->make, output->model,
|
|
output->serial ? " " : "",
|
|
output->serial ? output->serial : "",
|
|
output->name,
|
|
subconnector ? " via " : "",
|
|
subconnector ? subconnector : "");
|
|
wlr_output_set_description(output, description);
|
|
|
|
free(subconnector);
|
|
wlr_conn->status = DRM_MODE_CONNECTED;
|
|
return true;
|
|
}
|
|
|
|
static void disconnect_drm_connector(struct wlr_drm_connector *conn);
|
|
|
|
void scan_drm_connectors(struct wlr_drm_backend *drm,
|
|
struct wlr_device_hotplug_event *event) {
|
|
if (event != NULL && event->connector_id != 0) {
|
|
wlr_log(WLR_INFO, "Scanning DRM connector %"PRIu32" on %s",
|
|
event->connector_id, drm->name);
|
|
} else {
|
|
wlr_log(WLR_INFO, "Scanning DRM connectors on %s", drm->name);
|
|
}
|
|
|
|
drmModeRes *res = drmModeGetResources(drm->fd);
|
|
if (!res) {
|
|
wlr_log_errno(WLR_ERROR, "Failed to get DRM resources");
|
|
return;
|
|
}
|
|
|
|
size_t seen_len = wl_list_length(&drm->connectors);
|
|
// +1 so length can never be 0, which is undefined behaviour.
|
|
// Last element isn't used.
|
|
bool seen[seen_len + 1];
|
|
memset(seen, false, sizeof(seen));
|
|
size_t new_outputs_len = 0;
|
|
struct wlr_drm_connector *new_outputs[res->count_connectors + 1];
|
|
|
|
for (int i = 0; i < res->count_connectors; ++i) {
|
|
uint32_t conn_id = res->connectors[i];
|
|
|
|
ssize_t index = -1;
|
|
struct wlr_drm_connector *c, *wlr_conn = NULL;
|
|
wl_list_for_each(c, &drm->connectors, link) {
|
|
index++;
|
|
if (c->id == conn_id) {
|
|
wlr_conn = c;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// If the hotplug event contains a connector ID, ignore any other
|
|
// connector.
|
|
if (event != NULL && event->connector_id != 0 &&
|
|
event->connector_id != conn_id) {
|
|
if (wlr_conn != NULL) {
|
|
seen[index] = true;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
drmModeConnector *drm_conn = drmModeGetConnector(drm->fd, conn_id);
|
|
if (!drm_conn) {
|
|
wlr_log_errno(WLR_ERROR, "Failed to get DRM connector");
|
|
continue;
|
|
}
|
|
|
|
if (!wlr_conn) {
|
|
wlr_conn = create_drm_connector(drm, drm_conn);
|
|
if (wlr_conn == NULL) {
|
|
continue;
|
|
}
|
|
wlr_log(WLR_INFO, "Found connector '%s'", wlr_conn->name);
|
|
} else {
|
|
seen[index] = true;
|
|
}
|
|
|
|
// This can only happen *after* hotplug, since we haven't read the
|
|
// connector properties yet
|
|
if (wlr_conn->props.link_status != 0) {
|
|
uint64_t link_status;
|
|
if (!get_drm_prop(drm->fd, wlr_conn->id,
|
|
wlr_conn->props.link_status, &link_status)) {
|
|
wlr_drm_conn_log(wlr_conn, WLR_ERROR,
|
|
"Failed to get link status prop");
|
|
continue;
|
|
}
|
|
|
|
if (link_status == DRM_MODE_LINK_STATUS_BAD) {
|
|
// We need to reload our list of modes and force a modeset
|
|
wlr_drm_conn_log(wlr_conn, WLR_INFO, "Bad link detected");
|
|
disconnect_drm_connector(wlr_conn);
|
|
}
|
|
}
|
|
|
|
if (wlr_conn->status == DRM_MODE_DISCONNECTED &&
|
|
drm_conn->connection == DRM_MODE_CONNECTED) {
|
|
wlr_log(WLR_INFO, "'%s' connected", wlr_conn->name);
|
|
if (!connect_drm_connector(wlr_conn, drm_conn)) {
|
|
wlr_drm_conn_log(wlr_conn, WLR_ERROR, "Failed to connect DRM connector");
|
|
continue;
|
|
}
|
|
new_outputs[new_outputs_len++] = wlr_conn;
|
|
} else if (wlr_conn->status == DRM_MODE_CONNECTED &&
|
|
drm_conn->connection != DRM_MODE_CONNECTED) {
|
|
wlr_log(WLR_INFO, "'%s' disconnected", wlr_conn->name);
|
|
disconnect_drm_connector(wlr_conn);
|
|
}
|
|
|
|
drmModeFreeConnector(drm_conn);
|
|
}
|
|
|
|
drmModeFreeResources(res);
|
|
|
|
// Iterate in reverse order because we'll remove items from the list and
|
|
// still want indices to remain correct.
|
|
struct wlr_drm_connector *conn, *tmp_conn;
|
|
size_t index = wl_list_length(&drm->connectors);
|
|
wl_list_for_each_reverse_safe(conn, tmp_conn, &drm->connectors, link) {
|
|
index--;
|
|
if (index >= seen_len || seen[index]) {
|
|
continue;
|
|
}
|
|
|
|
wlr_log(WLR_INFO, "'%s' disappeared", conn->name);
|
|
destroy_drm_connector(conn);
|
|
}
|
|
|
|
realloc_crtcs(drm, NULL);
|
|
|
|
for (size_t i = 0; i < new_outputs_len; ++i) {
|
|
struct wlr_drm_connector *conn = new_outputs[i];
|
|
|
|
wlr_drm_conn_log(conn, WLR_INFO, "Requesting modeset");
|
|
wl_signal_emit_mutable(&drm->backend.events.new_output,
|
|
&conn->output);
|
|
}
|
|
}
|
|
|
|
void scan_drm_leases(struct wlr_drm_backend *drm) {
|
|
drmModeLesseeListRes *list = drmModeListLessees(drm->fd);
|
|
if (list == NULL) {
|
|
wlr_log_errno(WLR_ERROR, "drmModeListLessees failed");
|
|
return;
|
|
}
|
|
|
|
struct wlr_drm_connector *conn;
|
|
wl_list_for_each(conn, &drm->connectors, link) {
|
|
if (conn->lease == NULL) {
|
|
continue;
|
|
}
|
|
|
|
bool found = false;
|
|
for (size_t i = 0; i < list->count; i++) {
|
|
if (list->lessees[i] == conn->lease->lessee_id) {
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!found) {
|
|
wlr_log(WLR_DEBUG, "DRM lease %"PRIu32" has been terminated",
|
|
conn->lease->lessee_id);
|
|
drm_lease_destroy(conn->lease);
|
|
}
|
|
}
|
|
|
|
drmFree(list);
|
|
}
|
|
|
|
static void build_current_connector_state(struct wlr_output_state *state,
|
|
struct wlr_drm_connector *conn) {
|
|
bool enabled = conn->status != DRM_MODE_DISCONNECTED && conn->output.enabled;
|
|
|
|
wlr_output_state_init(state);
|
|
wlr_output_state_set_enabled(state, enabled);
|
|
if (!enabled) {
|
|
return;
|
|
}
|
|
|
|
if (conn->output.current_mode != NULL) {
|
|
wlr_output_state_set_mode(state, conn->output.current_mode);
|
|
} else {
|
|
wlr_output_state_set_custom_mode(state,
|
|
conn->output.width, conn->output.height, conn->output.refresh);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check whether we need to perform a full reset after a VT switch.
|
|
*
|
|
* If any connector or plane has a different CRTC, we need to perform a full
|
|
* reset to restore our mapping. We couldn't avoid a full reset even if we
|
|
* used a single KMS atomic commit to apply our state: the kernel rejects
|
|
* commits which migrate a plane from one CRTC to another without going through
|
|
* an intermediate state where the plane is disabled.
|
|
*/
|
|
static bool skip_reset_for_restore(struct wlr_drm_backend *drm) {
|
|
struct wlr_drm_connector *conn;
|
|
wl_list_for_each(conn, &drm->connectors, link) {
|
|
drmModeConnector *drm_conn = drmModeGetConnectorCurrent(drm->fd, conn->id);
|
|
if (drm_conn == NULL) {
|
|
return false;
|
|
}
|
|
struct wlr_drm_crtc *crtc = connector_get_current_crtc(conn, drm_conn);
|
|
drmModeFreeConnector(drm_conn);
|
|
|
|
if (crtc != NULL && conn->crtc != crtc) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
for (size_t i = 0; i < drm->num_planes; i++) {
|
|
struct wlr_drm_plane *plane = &drm->planes[i];
|
|
|
|
drmModePlane *drm_plane = drmModeGetPlane(drm->fd, plane->id);
|
|
if (drm_plane == NULL) {
|
|
return false;
|
|
}
|
|
uint32_t crtc_id = drm_plane->crtc_id;
|
|
drmModeFreePlane(drm_plane);
|
|
|
|
struct wlr_drm_crtc *crtc = NULL;
|
|
for (size_t i = 0; i < drm->num_crtcs; i++) {
|
|
if (drm->crtcs[i].id == crtc_id) {
|
|
crtc = &drm->crtcs[i];
|
|
break;
|
|
}
|
|
}
|
|
if (crtc == NULL) {
|
|
continue;
|
|
}
|
|
|
|
bool ok = false;
|
|
switch (plane->type) {
|
|
case DRM_PLANE_TYPE_PRIMARY:
|
|
ok = crtc->primary == plane;
|
|
break;
|
|
case DRM_PLANE_TYPE_CURSOR:
|
|
ok = crtc->cursor == plane;
|
|
break;
|
|
}
|
|
if (!ok) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void restore_drm_device(struct wlr_drm_backend *drm) {
|
|
// The previous DRM master leaves KMS in an undefined state. We need
|
|
// to restore our own state, but be careful to avoid invalid
|
|
// configurations. The connector/CRTC mapping may have changed, so
|
|
// first disable all CRTCs, then light up the ones we were using
|
|
// before the VT switch.
|
|
// TODO: better use the atomic API to improve restoration after a VT switch
|
|
if (!skip_reset_for_restore(drm) && !drm->iface->reset(drm)) {
|
|
wlr_log(WLR_ERROR, "Failed to reset state after VT switch");
|
|
}
|
|
|
|
struct wlr_drm_connector *conn;
|
|
wl_list_for_each(conn, &drm->connectors, link) {
|
|
struct wlr_output_state state;
|
|
build_current_connector_state(&state, conn);
|
|
if (!drm_connector_commit_state(conn, &state)) {
|
|
wlr_drm_conn_log(conn, WLR_ERROR, "Failed to restore state after VT switch");
|
|
}
|
|
wlr_output_state_finish(&state);
|
|
}
|
|
}
|
|
|
|
static int mhz_to_nsec(int mhz) {
|
|
return 1000000000000LL / mhz;
|
|
}
|
|
|
|
static void handle_page_flip(int fd, unsigned seq,
|
|
unsigned tv_sec, unsigned tv_usec, unsigned crtc_id, void *data) {
|
|
struct wlr_drm_page_flip *page_flip = data;
|
|
|
|
struct wlr_drm_connector *conn = page_flip->conn;
|
|
if (conn != NULL) {
|
|
conn->pending_page_flip = NULL;
|
|
}
|
|
drm_page_flip_destroy(page_flip);
|
|
|
|
if (conn == NULL) {
|
|
return;
|
|
}
|
|
|
|
struct wlr_drm_backend *drm = conn->backend;
|
|
|
|
if (conn->status != DRM_MODE_CONNECTED || conn->crtc == NULL) {
|
|
wlr_drm_conn_log(conn, WLR_DEBUG,
|
|
"Ignoring page-flip event for disabled connector");
|
|
return;
|
|
}
|
|
|
|
struct wlr_drm_plane *plane = conn->crtc->primary;
|
|
if (plane->queued_fb) {
|
|
drm_fb_move(&plane->current_fb, &plane->queued_fb);
|
|
}
|
|
if (conn->crtc->cursor && conn->crtc->cursor->queued_fb) {
|
|
drm_fb_move(&conn->crtc->cursor->current_fb,
|
|
&conn->crtc->cursor->queued_fb);
|
|
}
|
|
|
|
struct wlr_drm_layer *layer;
|
|
wl_list_for_each(layer, &conn->crtc->layers, link) {
|
|
drm_fb_move(&layer->current_fb, &layer->queued_fb);
|
|
}
|
|
|
|
uint32_t present_flags = WLR_OUTPUT_PRESENT_VSYNC |
|
|
WLR_OUTPUT_PRESENT_HW_CLOCK | WLR_OUTPUT_PRESENT_HW_COMPLETION;
|
|
/* Don't report ZERO_COPY in multi-gpu situations, because we had to copy
|
|
* data between the GPUs, even if we were using the direct scanout
|
|
* interface.
|
|
*/
|
|
if (!drm->parent) {
|
|
present_flags |= WLR_OUTPUT_PRESENT_ZERO_COPY;
|
|
}
|
|
|
|
struct timespec present_time = {
|
|
.tv_sec = tv_sec,
|
|
.tv_nsec = tv_usec * 1000,
|
|
};
|
|
struct wlr_output_event_present present_event = {
|
|
/* The DRM backend guarantees that the presentation event will be for
|
|
* the last submitted frame. */
|
|
.commit_seq = conn->output.commit_seq,
|
|
.presented = drm->session->active,
|
|
.when = &present_time,
|
|
.seq = seq,
|
|
.refresh = mhz_to_nsec(conn->refresh),
|
|
.flags = present_flags,
|
|
};
|
|
wlr_output_send_present(&conn->output, &present_event);
|
|
|
|
if (drm->session->active) {
|
|
wlr_output_send_frame(&conn->output);
|
|
}
|
|
}
|
|
|
|
int handle_drm_event(int fd, uint32_t mask, void *data) {
|
|
struct wlr_drm_backend *drm = data;
|
|
|
|
drmEventContext event = {
|
|
.version = 3,
|
|
.page_flip_handler2 = handle_page_flip,
|
|
};
|
|
|
|
if (drmHandleEvent(fd, &event) != 0) {
|
|
wlr_log(WLR_ERROR, "drmHandleEvent failed");
|
|
wlr_backend_destroy(&drm->backend);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static void disconnect_drm_connector(struct wlr_drm_connector *conn) {
|
|
if (conn->status == DRM_MODE_DISCONNECTED) {
|
|
return;
|
|
}
|
|
|
|
// This will cleanup the compositor-facing wlr_output, but won't destroy
|
|
// our wlr_drm_connector.
|
|
wlr_output_destroy(&conn->output);
|
|
|
|
assert(conn->status == DRM_MODE_DISCONNECTED);
|
|
}
|
|
|
|
void destroy_drm_connector(struct wlr_drm_connector *conn) {
|
|
disconnect_drm_connector(conn);
|
|
|
|
wl_list_remove(&conn->link);
|
|
free(conn);
|
|
}
|
|
|
|
int wlr_drm_backend_get_non_master_fd(struct wlr_backend *backend) {
|
|
assert(backend);
|
|
|
|
struct wlr_drm_backend *drm = get_drm_backend_from_backend(backend);
|
|
int fd = open(drm->name, O_RDWR | O_CLOEXEC);
|
|
|
|
if (fd < 0) {
|
|
wlr_log_errno(WLR_ERROR, "Unable to clone DRM fd for client fd");
|
|
return -1;
|
|
}
|
|
|
|
if (drmIsMaster(fd) && drmDropMaster(fd) < 0) {
|
|
wlr_log_errno(WLR_ERROR, "Failed to drop master");
|
|
return -1;
|
|
}
|
|
|
|
return fd;
|
|
}
|
|
|
|
struct wlr_drm_lease *wlr_drm_create_lease(struct wlr_output **outputs,
|
|
size_t n_outputs, int *lease_fd_ptr) {
|
|
assert(outputs);
|
|
|
|
if (n_outputs == 0) {
|
|
wlr_log(WLR_ERROR, "Can't lease 0 outputs");
|
|
return NULL;
|
|
}
|
|
|
|
struct wlr_drm_backend *drm =
|
|
get_drm_backend_from_backend(outputs[0]->backend);
|
|
|
|
int n_objects = 0;
|
|
uint32_t objects[4 * n_outputs + 1];
|
|
for (size_t i = 0; i < n_outputs; ++i) {
|
|
struct wlr_drm_connector *conn =
|
|
get_drm_connector_from_output(outputs[i]);
|
|
assert(conn->lease == NULL);
|
|
|
|
if (conn->backend != drm) {
|
|
wlr_log(WLR_ERROR, "Can't lease output from different backends");
|
|
return NULL;
|
|
}
|
|
|
|
objects[n_objects++] = conn->id;
|
|
wlr_log(WLR_DEBUG, "Connector %d", conn->id);
|
|
|
|
if (!drm_connector_alloc_crtc(conn)) {
|
|
wlr_log(WLR_ERROR, "Failled to allocate connector CRTC");
|
|
return NULL;
|
|
}
|
|
|
|
objects[n_objects++] = conn->crtc->id;
|
|
wlr_log(WLR_DEBUG, "CRTC %d", conn->crtc->id);
|
|
|
|
objects[n_objects++] = conn->crtc->primary->id;
|
|
wlr_log(WLR_DEBUG, "Primary plane %d", conn->crtc->primary->id);
|
|
|
|
if (conn->crtc->cursor) {
|
|
wlr_log(WLR_DEBUG, "Cursor plane %d", conn->crtc->cursor->id);
|
|
objects[n_objects++] = conn->crtc->cursor->id;
|
|
}
|
|
}
|
|
|
|
assert(n_objects != 0);
|
|
|
|
struct wlr_drm_lease *lease = calloc(1, sizeof(*lease));
|
|
if (lease == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
lease->backend = drm;
|
|
wl_signal_init(&lease->events.destroy);
|
|
|
|
wlr_log(WLR_DEBUG, "Issuing DRM lease with %d objects", n_objects);
|
|
int lease_fd = drmModeCreateLease(drm->fd, objects, n_objects, O_CLOEXEC,
|
|
&lease->lessee_id);
|
|
if (lease_fd < 0) {
|
|
free(lease);
|
|
return NULL;
|
|
}
|
|
*lease_fd_ptr = lease_fd;
|
|
|
|
wlr_log(WLR_DEBUG, "Issued DRM lease %"PRIu32, lease->lessee_id);
|
|
for (size_t i = 0; i < n_outputs; ++i) {
|
|
struct wlr_drm_connector *conn =
|
|
get_drm_connector_from_output(outputs[i]);
|
|
conn->lease = lease;
|
|
conn->crtc->lease = lease;
|
|
}
|
|
|
|
return lease;
|
|
}
|
|
|
|
void wlr_drm_lease_terminate(struct wlr_drm_lease *lease) {
|
|
struct wlr_drm_backend *drm = lease->backend;
|
|
|
|
wlr_log(WLR_DEBUG, "Terminating DRM lease %d", lease->lessee_id);
|
|
int ret = drmModeRevokeLease(drm->fd, lease->lessee_id);
|
|
if (ret < 0) {
|
|
wlr_log_errno(WLR_ERROR, "Failed to terminate lease");
|
|
}
|
|
|
|
drm_lease_destroy(lease);
|
|
}
|
|
|
|
void drm_lease_destroy(struct wlr_drm_lease *lease) {
|
|
struct wlr_drm_backend *drm = lease->backend;
|
|
|
|
wl_signal_emit_mutable(&lease->events.destroy, NULL);
|
|
|
|
struct wlr_drm_connector *conn;
|
|
wl_list_for_each(conn, &drm->connectors, link) {
|
|
if (conn->lease == lease) {
|
|
conn->lease = NULL;
|
|
}
|
|
}
|
|
|
|
for (size_t i = 0; i < drm->num_crtcs; ++i) {
|
|
if (drm->crtcs[i].lease == lease) {
|
|
drm->crtcs[i].lease = NULL;
|
|
}
|
|
}
|
|
|
|
free(lease);
|
|
}
|