wlroots/backend/drm/drm.c

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C
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#define _XOPEN_SOURCE 700
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#include <assert.h>
#include <drm_fourcc.h>
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#include <drm_mode.h>
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#include <errno.h>
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#include <gbm.h>
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#include <inttypes.h>
#include <stdint.h>
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
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#include <time.h>
#include <wayland-server-core.h>
#include <wayland-util.h>
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#include <wlr/backend/interface.h>
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#include <wlr/interfaces/wlr_output.h>
#include <wlr/render/wlr_renderer.h>
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#include <wlr/types/wlr_matrix.h>
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#include <wlr/util/box.h>
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#include <wlr/util/log.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include "backend/drm/cvt.h"
#include "backend/drm/drm.h"
#include "backend/drm/iface.h"
#include "backend/drm/util.h"
#include "render/pixel_format.h"
#include "render/drm_format_set.h"
#include "render/swapchain.h"
#include "render/wlr_renderer.h"
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#include "util/signal.h"
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static const uint32_t SUPPORTED_OUTPUT_STATE =
WLR_OUTPUT_STATE_BACKEND_OPTIONAL |
WLR_OUTPUT_STATE_BUFFER |
WLR_OUTPUT_STATE_MODE |
WLR_OUTPUT_STATE_ENABLED |
WLR_OUTPUT_STATE_GAMMA_LUT;
bool check_drm_features(struct wlr_drm_backend *drm) {
if (drmGetCap(drm->fd, DRM_CAP_CURSOR_WIDTH, &drm->cursor_width)) {
drm->cursor_width = 64;
}
if (drmGetCap(drm->fd, DRM_CAP_CURSOR_HEIGHT, &drm->cursor_height)) {
drm->cursor_height = 64;
}
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uint64_t cap;
if (drmGetCap(drm->fd, DRM_CAP_PRIME, &cap) ||
!(cap & DRM_PRIME_CAP_IMPORT)) {
wlr_log(WLR_ERROR, "PRIME import not supported");
return false;
}
if (drm->parent) {
if (drmGetCap(drm->parent->fd, DRM_CAP_PRIME, &cap) ||
!(cap & DRM_PRIME_CAP_EXPORT)) {
wlr_log(WLR_ERROR,
"PRIME export not supported on primary GPU");
return false;
}
}
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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;
}
if (drmGetCap(drm->fd, DRM_CAP_CRTC_IN_VBLANK_EVENT, &cap) || !cap) {
wlr_log(WLR_ERROR, "DRM_CRTC_IN_VBLANK_EVENT unsupported");
return false;
}
const char *no_atomic = getenv("WLR_DRM_NO_ATOMIC");
if (no_atomic && strcmp(no_atomic, "1") == 0) {
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wlr_log(WLR_DEBUG,
"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,
"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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int ret = drmGetCap(drm->fd, DRM_CAP_TIMESTAMP_MONOTONIC, &cap);
drm->clock = (ret == 0 && cap == 1) ? CLOCK_MONOTONIC : CLOCK_REALTIME;
const char *no_modifiers = getenv("WLR_DRM_NO_MODIFIERS");
if (no_modifiers != NULL && strcmp(no_modifiers, "1") == 0) {
wlr_log(WLR_DEBUG, "WLR_DRM_NO_MODIFIERS set, disabling modifiers");
} else {
ret = drmGetCap(drm->fd, DRM_CAP_ADDFB2_MODIFIERS, &cap);
drm->addfb2_modifiers = ret == 0 && cap == 1;
wlr_log(WLR_DEBUG, "ADDFB2 modifiers %s",
drm->addfb2_modifiers ? "supported" : "unsupported");
}
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return true;
}
static bool add_plane(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc, const drmModePlane *drm_plane,
uint32_t type, union wlr_drm_plane_props *props) {
assert(!(type == DRM_PLANE_TYPE_PRIMARY && crtc->primary));
assert(!(type == DRM_PLANE_TYPE_CURSOR && crtc->cursor));
struct wlr_drm_plane *p = calloc(1, sizeof(*p));
if (!p) {
wlr_log_errno(WLR_ERROR, "Allocation failed");
return false;
}
p->type = type;
p->id = drm_plane->plane_id;
p->props = *props;
for (size_t j = 0; j < drm_plane->count_formats; ++j) {
wlr_drm_format_set_add(&p->formats, drm_plane->formats[j],
DRM_FORMAT_MOD_INVALID);
}
if (p->props.in_formats && drm->addfb2_modifiers) {
uint64_t blob_id;
if (!get_drm_prop(drm->fd, p->id, p->props.in_formats, &blob_id)) {
wlr_log(WLR_ERROR, "Failed to read IN_FORMATS property");
goto error;
}
drmModePropertyBlobRes *blob = drmModeGetPropertyBlob(drm->fd, blob_id);
if (!blob) {
wlr_log(WLR_ERROR, "Failed to read IN_FORMATS blob");
goto error;
}
struct drm_format_modifier_blob *data = blob->data;
uint32_t *fmts = (uint32_t *)((char *)data + data->formats_offset);
struct drm_format_modifier *mods = (struct drm_format_modifier *)
((char *)data + data->modifiers_offset);
for (uint32_t i = 0; i < data->count_modifiers; ++i) {
for (int j = 0; j < 64; ++j) {
if (mods[i].formats & ((uint64_t)1 << j)) {
wlr_drm_format_set_add(&p->formats,
fmts[j + mods[i].offset], mods[i].modifier);
}
}
}
drmModeFreePropertyBlob(blob);
} else if (type == DRM_PLANE_TYPE_CURSOR) {
// Force a LINEAR layout for the cursor if the driver doesn't support
// modifiers
for (size_t i = 0; i < p->formats.len; ++i) {
wlr_drm_format_set_add(&p->formats, p->formats.formats[i]->format,
DRM_FORMAT_MOD_LINEAR);
}
}
switch (type) {
case DRM_PLANE_TYPE_PRIMARY:
crtc->primary = p;
break;
case DRM_PLANE_TYPE_CURSOR:
crtc->cursor = p;
break;
default:
abort();
}
return true;
error:
free(p);
return false;
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}
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static bool init_planes(struct wlr_drm_backend *drm) {
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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wlr_log(WLR_INFO, "Found %"PRIu32" DRM planes", plane_res->count_planes);
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for (uint32_t i = 0; i < plane_res->count_planes; ++i) {
uint32_t id = plane_res->planes[i];
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drmModePlane *plane = drmModeGetPlane(drm->fd, id);
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if (!plane) {
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wlr_log_errno(WLR_ERROR, "Failed to get DRM plane");
goto error;
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}
union wlr_drm_plane_props props = {0};
if (!get_drm_plane_props(drm->fd, id, &props)) {
drmModeFreePlane(plane);
goto error;
}
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uint64_t type;
if (!get_drm_prop(drm->fd, id, props.type, &type)) {
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drmModeFreePlane(plane);
goto error;
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}
// We don't really care about overlay planes, as we don't support them
// yet.
if (type == DRM_PLANE_TYPE_OVERLAY) {
drmModeFreePlane(plane);
continue;
}
assert(drm->num_crtcs <= 32);
struct wlr_drm_crtc *crtc = NULL;
for (size_t j = 0; j < drm->num_crtcs ; j++) {
uint32_t crtc_bit = 1 << j;
if ((plane->possible_crtcs & crtc_bit) == 0) {
continue;
}
struct wlr_drm_crtc *candidate = &drm->crtcs[j];
if ((type == DRM_PLANE_TYPE_PRIMARY && !candidate->primary) ||
(type == DRM_PLANE_TYPE_CURSOR && !candidate->cursor)) {
crtc = candidate;
break;
}
}
if (!crtc) {
drmModeFreePlane(plane);
continue;
}
if (!add_plane(drm, crtc, plane, type, &props)) {
drmModeFreePlane(plane);
goto error;
}
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drmModeFreePlane(plane);
}
drmModeFreePlaneResources(plane_res);
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return true;
error:
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drmModeFreePlaneResources(plane_res);
return false;
}
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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wlr_log(WLR_INFO, "Found %d DRM CRTCs", res->count_crtcs);
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drm->num_crtcs = res->count_crtcs;
if (drm->num_crtcs == 0) {
drmModeFreeResources(res);
return true;
}
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drm->crtcs = calloc(drm->num_crtcs, sizeof(drm->crtcs[0]));
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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for (size_t i = 0; i < drm->num_crtcs; ++i) {
struct wlr_drm_crtc *crtc = &drm->crtcs[i];
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crtc->id = res->crtcs[i];
crtc->legacy_crtc = drmModeGetCrtc(drm->fd, crtc->id);
get_drm_crtc_props(drm->fd, crtc->id, &crtc->props);
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}
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if (!init_planes(drm)) {
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goto error_crtcs;
}
drmModeFreeResources(res);
return true;
error_crtcs:
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free(drm->crtcs);
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error_res:
drmModeFreeResources(res);
return false;
}
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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for (size_t i = 0; i < drm->num_crtcs; ++i) {
struct wlr_drm_crtc *crtc = &drm->crtcs[i];
drmModeFreeCrtc(crtc->legacy_crtc);
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if (crtc->mode_id) {
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drmModeDestroyPropertyBlob(drm->fd, crtc->mode_id);
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}
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if (crtc->gamma_lut) {
drmModeDestroyPropertyBlob(drm->fd, crtc->gamma_lut);
}
if (crtc->primary) {
wlr_drm_format_set_finish(&crtc->primary->formats);
free(crtc->primary);
}
if (crtc->cursor) {
wlr_drm_format_set_finish(&crtc->cursor->formats);
free(crtc->cursor);
}
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}
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free(drm->crtcs);
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}
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static struct wlr_drm_connector *get_drm_connector_from_output(
struct wlr_output *wlr_output) {
assert(wlr_output_is_drm(wlr_output));
return (struct wlr_drm_connector *)wlr_output;
}
static bool drm_connector_attach_render(struct wlr_output *output,
int *buffer_age) {
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struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
return drm_surface_make_current(&conn->crtc->primary->surf, buffer_age);
}
static void drm_plane_set_committed(struct wlr_drm_plane *plane) {
drm_fb_move(&plane->queued_fb, &plane->pending_fb);
if (plane->queued_fb && plane->surf.swapchain) {
wlr_swapchain_set_buffer_submitted(plane->surf.swapchain,
plane->queued_fb->wlr_buf);
}
}
static bool drm_crtc_commit(struct wlr_drm_connector *conn,
const struct wlr_output_state *state, uint32_t flags, bool test_only) {
// Disallow atomic-only flags
assert((flags & ~DRM_MODE_PAGE_FLIP_FLAGS) == 0);
struct wlr_drm_backend *drm = conn->backend;
struct wlr_drm_crtc *crtc = conn->crtc;
bool ok = drm->iface->crtc_commit(conn, state, flags, test_only);
if (ok && !test_only) {
drm_plane_set_committed(crtc->primary);
if (crtc->cursor != NULL) {
drm_plane_set_committed(crtc->cursor);
}
} else {
drm_fb_clear(&crtc->primary->pending_fb);
// 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.
}
return ok;
}
static bool drm_crtc_page_flip(struct wlr_drm_connector *conn,
const struct wlr_output_state *state) {
struct wlr_drm_crtc *crtc = conn->crtc;
assert(crtc != NULL);
// 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 (conn->pending_page_flip_crtc && !drm_connector_state_is_modeset(state)) {
wlr_drm_conn_log(conn, WLR_ERROR, "Failed to page-flip output: "
"a page-flip is already pending");
return false;
}
assert(drm_connector_state_active(conn, state));
assert(plane_get_next_fb(crtc->primary));
if (!drm_crtc_commit(conn, state, DRM_MODE_PAGE_FLIP_EVENT, false)) {
return false;
}
conn->pending_page_flip_crtc = crtc->id;
// wlr_output's API guarantees that submitting a buffer will schedule a
// frame event. However the DRM backend will also schedule a frame event
// when performing a modeset. Set frame_pending to true so that
// wlr_output_schedule_frame doesn't trigger a synthetic frame event.
conn->output.frame_pending = true;
return true;
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}
static bool drm_connector_set_pending_fb(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) {
return false;
}
struct wlr_drm_plane *plane = crtc->primary;
assert(state->committed & WLR_OUTPUT_STATE_BUFFER);
switch (state->buffer_type) {
case WLR_OUTPUT_STATE_BUFFER_RENDER:
if (!drm_plane_lock_surface(plane, drm)) {
wlr_drm_conn_log(conn, WLR_ERROR, "drm_plane_lock_surface failed");
return false;
}
break;
case WLR_OUTPUT_STATE_BUFFER_SCANOUT:;
if (!drm_fb_import(&plane->pending_fb, drm, state->buffer,
&crtc->primary->formats)) {
wlr_drm_conn_log(conn, WLR_DEBUG,
"Failed to import buffer for scan-out");
return false;
}
break;
}
return true;
}
static bool drm_connector_alloc_crtc(struct wlr_drm_connector *conn);
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static bool drm_connector_test(struct wlr_output *output) {
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
if (!conn->backend->session->active) {
return false;
}
uint32_t unsupported = output->pending.committed & ~SUPPORTED_OUTPUT_STATE;
if (unsupported != 0) {
wlr_log(WLR_DEBUG, "Unsupported output state fields: 0x%"PRIx32,
unsupported);
return false;
}
if ((output->pending.committed & WLR_OUTPUT_STATE_ENABLED) &&
output->pending.enabled) {
if (output->current_mode == NULL &&
!(output->pending.committed & WLR_OUTPUT_STATE_MODE)) {
wlr_drm_conn_log(conn, WLR_DEBUG,
"Can't enable an output without a mode");
return false;
}
}
if (drm_connector_state_active(conn, &output->pending)) {
if (!drm_connector_alloc_crtc(conn)) {
wlr_drm_conn_log(conn, WLR_DEBUG,
"No CRTC available for this connector");
return false;
}
}
if ((output->pending.committed & WLR_OUTPUT_STATE_BUFFER) &&
output->pending.buffer_type == WLR_OUTPUT_STATE_BUFFER_SCANOUT) {
if (!drm_connector_set_pending_fb(conn, &output->pending)) {
return false;
}
if (!drm_crtc_commit(conn, &output->pending, 0, true)) {
return false;
}
}
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return true;
}
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_set_mode(struct wlr_drm_connector *conn,
const struct wlr_output_state *state);
bool drm_connector_commit_state(struct wlr_drm_connector *conn,
const struct wlr_output_state *pending) {
struct wlr_drm_backend *drm = conn->backend;
struct wlr_output_state state = *pending;
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if (!drm->session->active) {
return false;
}
if (drm_connector_state_active(conn, &state)) {
if (!drm_connector_alloc_crtc(conn)) {
wlr_drm_conn_log(conn, WLR_ERROR,
"No CRTC available for this connector");
return false;
}
}
if (state.committed & WLR_OUTPUT_STATE_BUFFER) {
if (!drm_connector_set_pending_fb(conn, &state)) {
return false;
}
}
if (state.committed & (WLR_OUTPUT_STATE_MODE | WLR_OUTPUT_STATE_ENABLED)) {
if ((state.committed & WLR_OUTPUT_STATE_MODE) &&
state.mode_type == WLR_OUTPUT_STATE_MODE_CUSTOM) {
drmModeModeInfo mode = {0};
drm_connector_state_mode(conn, &state, &mode);
state.mode_type = WLR_OUTPUT_STATE_MODE_FIXED;
state.mode = wlr_drm_connector_add_mode(&conn->output, &mode);
if (state.mode == NULL) {
return false;
}
}
if (!drm_connector_set_mode(conn, &state)) {
return false;
}
} else if (state.committed & WLR_OUTPUT_STATE_BUFFER) {
if (!drm_crtc_page_flip(conn, &state)) {
return false;
}
} else if (state.committed & (WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED |
WLR_OUTPUT_STATE_GAMMA_LUT)) {
assert(conn->crtc != NULL);
// TODO: maybe request a page-flip event here?
if (!drm_crtc_commit(conn, &state, 0, false)) {
return false;
}
}
return true;
}
static bool drm_connector_commit(struct wlr_output *output) {
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
if (!drm_connector_test(output)) {
return false;
}
return drm_connector_commit_state(conn, &output->pending);
}
static void drm_connector_rollback_render(struct wlr_output *output) {
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struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
return drm_surface_unset_current(&conn->crtc->primary->surf);
}
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_crtc->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) {
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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);
}
static bool drm_connector_export_dmabuf(struct wlr_output *output,
struct wlr_dmabuf_attributes *attribs) {
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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 (drm->parent) {
// We don't keep track of the original buffer on the parent GPU when
// using multi-GPU.
return false;
}
if (!drm->session->active) {
return false;
}
if (!crtc) {
return false;
}
struct wlr_drm_fb *fb = crtc->primary->queued_fb;
if (fb == NULL) {
fb = crtc->primary->current_fb;
}
if (fb == NULL) {
return false;
}
// export_dmabuf gives ownership of the DMA-BUF to the caller, so we need
// to dup it
struct wlr_dmabuf_attributes buf_attribs = {0};
if (!wlr_buffer_get_dmabuf(fb->wlr_buf, &buf_attribs)) {
return false;
}
return wlr_dmabuf_attributes_copy(attribs, &buf_attribs);
}
struct wlr_drm_fb *plane_get_next_fb(struct wlr_drm_plane *plane) {
if (plane->pending_fb) {
return plane->pending_fb;
}
if (plane->queued_fb) {
return plane->queued_fb;
}
return plane->current_fb;
}
static bool drm_connector_test_renderer(struct wlr_drm_connector *conn,
const struct wlr_output_state *state) {
struct wlr_drm_backend *drm = conn->backend;
if (drm->iface == &legacy_iface) {
return true;
}
struct wlr_drm_plane *plane = conn->crtc->primary;
struct wlr_drm_fb *prev_fb = NULL;
drm_fb_move(&prev_fb, &plane->pending_fb);
bool ok = false;
if (!drm_surface_render_black_frame(&plane->surf)) {
goto out;
}
if (!drm_plane_lock_surface(plane, drm)) {
goto out;
}
ok = drm_crtc_commit(conn, state, 0, true);
2017-05-01 03:20:48 +00:00
out:
drm_fb_move(&plane->pending_fb, &prev_fb);
return ok;
}
static bool drm_connector_init_renderer(struct wlr_drm_connector *conn,
const struct wlr_output_state *state) {
struct wlr_drm_backend *drm = conn->backend;
if (conn->state != WLR_DRM_CONN_CONNECTED &&
conn->state != WLR_DRM_CONN_NEEDS_MODESET) {
return false;
}
assert(conn->crtc != NULL);
wlr_drm_conn_log(conn, WLR_DEBUG, "Initializing renderer");
drmModeModeInfo mode = {0};
drm_connector_state_mode(conn, state, &mode);
struct wlr_drm_plane *plane = conn->crtc->primary;
int width = mode.hdisplay;
int height = mode.vdisplay;
if (drm->addfb2_modifiers) {
// Modifiers are supported, try to use them
if (drm_plane_init_surface(plane, drm, width, height, true) &&
drm_connector_test_renderer(conn, state)) {
return true;
}
// If page-flipping with modifiers enabled doesn't work, retry without
// modifiers
wlr_drm_conn_log(conn, WLR_INFO,
"Page-flip failed with primary FB modifiers enabled, "
"retrying without modifiers");
}
if (drm_plane_init_surface(plane, drm, width, height, false) &&
drm_connector_test_renderer(conn, state)) {
return true;
}
wlr_drm_conn_log(conn, WLR_ERROR, "Failed to initialize renderer: "
"initial page-flip failed");
return false;
}
static void realloc_crtcs(struct wlr_drm_backend *drm);
backend/drm: steal CRTCs from disabled outputs This commit allows outputs that need a CRTC to steal it from user-disabled outputs. Note that in the case there are enough CRTCs, disabled outputs don't loose it (so there's no modeset and plane initialization needed after DPMS). CRTC allocation still prefers to keep the old configuration, even if that means allocating an extra CRTC to a disabled output. CRTC reallocation now happen when enabling/disabling an output as well as when trying to modeset. When enabling an output without a CRTC, we realloc to try to steal a CRTC from a disabled output (that doesn't really need the CRTC). When disabling an output, we try to give our CRTC to an output that needs one. Modesetting is similar to enabling. A new DRM connector field has been added: `desired_enabled`. Outputs without CRTCs get automatically disabled. This field keeps track of the state desired by the user, allowing to automatically re-enable outputs when a CRTC becomes free. This required some changes to the allocation algorithm. Previously, the algorithm tried to keep the previous configuration even if a new configuration with a better score was possible (it only changed configuration when the old one didn't work anymore). This is now changed and the old configuration (still preferred) is only retained without considering new possibilities when it's perfect (all outputs have CRTCs). User-disabled outputs now have `possible_crtcs` set to 0, meaning they can only retain a previous CRTC (not acquire a new one). The allocation algorithm has been updated to do not bump the score when assigning a CRTC to a disabled output.
2018-09-10 21:35:22 +00:00
static void attempt_enable_needs_modeset(struct wlr_drm_backend *drm) {
// Try to modeset any output that has a desired mode and a CRTC (ie. was
// lacking a CRTC on last modeset)
struct wlr_drm_connector *conn;
wl_list_for_each(conn, &drm->outputs, link) {
if (conn->state == WLR_DRM_CONN_NEEDS_MODESET &&
conn->crtc != NULL && conn->desired_mode != NULL &&
conn->desired_enabled) {
wlr_drm_conn_log(conn, WLR_DEBUG,
"Output has a desired mode and a CRTC, attempting a modeset");
struct wlr_output_state state = {
.committed = WLR_OUTPUT_STATE_MODE | WLR_OUTPUT_STATE_ENABLED,
.enabled = true,
.mode_type = WLR_OUTPUT_STATE_MODE_FIXED,
.mode = conn->desired_mode,
};
drm_connector_commit_state(conn, &state);
backend/drm: steal CRTCs from disabled outputs This commit allows outputs that need a CRTC to steal it from user-disabled outputs. Note that in the case there are enough CRTCs, disabled outputs don't loose it (so there's no modeset and plane initialization needed after DPMS). CRTC allocation still prefers to keep the old configuration, even if that means allocating an extra CRTC to a disabled output. CRTC reallocation now happen when enabling/disabling an output as well as when trying to modeset. When enabling an output without a CRTC, we realloc to try to steal a CRTC from a disabled output (that doesn't really need the CRTC). When disabling an output, we try to give our CRTC to an output that needs one. Modesetting is similar to enabling. A new DRM connector field has been added: `desired_enabled`. Outputs without CRTCs get automatically disabled. This field keeps track of the state desired by the user, allowing to automatically re-enable outputs when a CRTC becomes free. This required some changes to the allocation algorithm. Previously, the algorithm tried to keep the previous configuration even if a new configuration with a better score was possible (it only changed configuration when the old one didn't work anymore). This is now changed and the old configuration (still preferred) is only retained without considering new possibilities when it's perfect (all outputs have CRTCs). User-disabled outputs now have `possible_crtcs` set to 0, meaning they can only retain a previous CRTC (not acquire a new one). The allocation algorithm has been updated to do not bump the score when assigning a CRTC to a disabled output.
2018-09-10 21:35:22 +00:00
}
}
}
static bool drm_connector_alloc_crtc(struct wlr_drm_connector *conn) {
if (conn->crtc != NULL) {
return true;
}
bool prev_desired_enabled = conn->desired_enabled;
conn->desired_enabled = true;
realloc_crtcs(conn->backend);
conn->desired_enabled = prev_desired_enabled;
return conn->crtc != NULL;
}
static bool drm_connector_set_mode(struct wlr_drm_connector *conn,
const struct wlr_output_state *state) {
struct wlr_drm_backend *drm = conn->backend;
struct wlr_output_mode *wlr_mode = NULL;
if (drm_connector_state_active(conn, state)) {
if (state->committed & WLR_OUTPUT_STATE_MODE) {
assert(state->mode_type == WLR_OUTPUT_STATE_MODE_FIXED);
wlr_mode = state->mode;
} else {
wlr_mode = conn->output.current_mode;
}
}
conn->desired_enabled = wlr_mode != NULL;
conn->desired_mode = wlr_mode;
backend/drm: steal CRTCs from disabled outputs This commit allows outputs that need a CRTC to steal it from user-disabled outputs. Note that in the case there are enough CRTCs, disabled outputs don't loose it (so there's no modeset and plane initialization needed after DPMS). CRTC allocation still prefers to keep the old configuration, even if that means allocating an extra CRTC to a disabled output. CRTC reallocation now happen when enabling/disabling an output as well as when trying to modeset. When enabling an output without a CRTC, we realloc to try to steal a CRTC from a disabled output (that doesn't really need the CRTC). When disabling an output, we try to give our CRTC to an output that needs one. Modesetting is similar to enabling. A new DRM connector field has been added: `desired_enabled`. Outputs without CRTCs get automatically disabled. This field keeps track of the state desired by the user, allowing to automatically re-enable outputs when a CRTC becomes free. This required some changes to the allocation algorithm. Previously, the algorithm tried to keep the previous configuration even if a new configuration with a better score was possible (it only changed configuration when the old one didn't work anymore). This is now changed and the old configuration (still preferred) is only retained without considering new possibilities when it's perfect (all outputs have CRTCs). User-disabled outputs now have `possible_crtcs` set to 0, meaning they can only retain a previous CRTC (not acquire a new one). The allocation algorithm has been updated to do not bump the score when assigning a CRTC to a disabled output.
2018-09-10 21:35:22 +00:00
if (wlr_mode == NULL) {
if (conn->crtc != NULL) {
if (!drm_crtc_commit(conn, state, 0, false)) {
return false;
}
realloc_crtcs(drm);
attempt_enable_needs_modeset(drm);
}
wlr_output_update_enabled(&conn->output, false);
return true;
}
if (conn->state != WLR_DRM_CONN_CONNECTED
&& conn->state != WLR_DRM_CONN_NEEDS_MODESET) {
wlr_drm_conn_log(conn, WLR_ERROR,
"Cannot modeset a disconnected output");
return false;
2018-01-06 23:28:21 +00:00
}
if (!drm_connector_alloc_crtc(conn)) {
wlr_drm_conn_log(conn, WLR_ERROR,
"Cannot perform modeset: no CRTC for this connector");
return false;
2017-07-30 22:04:34 +00:00
}
wlr_drm_conn_log(conn, WLR_INFO,
"Modesetting with '%" PRId32 "x%" PRId32 "@%" PRId32 "mHz'",
wlr_mode->width, wlr_mode->height, wlr_mode->refresh);
if (!drm_connector_init_renderer(conn, state)) {
wlr_drm_conn_log(conn, WLR_ERROR,
"Failed to initialize renderer for plane");
return false;
}
2017-05-07 16:26:48 +00:00
// drm_crtc_page_flip expects a FB to be available
struct wlr_drm_plane *plane = conn->crtc->primary;
if (!plane_get_next_fb(plane)) {
if (!drm_surface_render_black_frame(&plane->surf)) {
return false;
}
if (!drm_plane_lock_surface(plane, drm)) {
return false;
}
}
if (!drm_crtc_page_flip(conn, state)) {
return false;
}
conn->state = WLR_DRM_CONN_CONNECTED;
conn->desired_mode = NULL;
wlr_output_update_mode(&conn->output, wlr_mode);
wlr_output_update_enabled(&conn->output, true);
backend/drm: steal CRTCs from disabled outputs This commit allows outputs that need a CRTC to steal it from user-disabled outputs. Note that in the case there are enough CRTCs, disabled outputs don't loose it (so there's no modeset and plane initialization needed after DPMS). CRTC allocation still prefers to keep the old configuration, even if that means allocating an extra CRTC to a disabled output. CRTC reallocation now happen when enabling/disabling an output as well as when trying to modeset. When enabling an output without a CRTC, we realloc to try to steal a CRTC from a disabled output (that doesn't really need the CRTC). When disabling an output, we try to give our CRTC to an output that needs one. Modesetting is similar to enabling. A new DRM connector field has been added: `desired_enabled`. Outputs without CRTCs get automatically disabled. This field keeps track of the state desired by the user, allowing to automatically re-enable outputs when a CRTC becomes free. This required some changes to the allocation algorithm. Previously, the algorithm tried to keep the previous configuration even if a new configuration with a better score was possible (it only changed configuration when the old one didn't work anymore). This is now changed and the old configuration (still preferred) is only retained without considering new possibilities when it's perfect (all outputs have CRTCs). User-disabled outputs now have `possible_crtcs` set to 0, meaning they can only retain a previous CRTC (not acquire a new one). The allocation algorithm has been updated to do not bump the score when assigning a CRTC to a disabled output.
2018-09-10 21:35:22 +00:00
conn->desired_enabled = true;
// When switching VTs, the mode is not updated but the buffers become
// invalid, so we need to manually damage the output here
wlr_output_damage_whole(&conn->output);
2017-05-07 16:26:48 +00:00
return true;
}
struct wlr_output_mode *wlr_drm_connector_add_mode(struct wlr_output *output,
const drmModeModeInfo *modeinfo) {
2018-09-17 20:25:20 +00:00
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 = (struct wlr_drm_mode *)wlr_mode;
if (memcmp(&mode->drm_mode, modeinfo, sizeof(*modeinfo)) == 0) {
return wlr_mode;
}
}
struct wlr_drm_mode *mode = calloc(1, sizeof(*mode));
if (!mode) {
return NULL;
}
memcpy(&mode->drm_mode, modeinfo, sizeof(*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);
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);
wl_list_insert(&conn->output.modes, &mode->wlr_mode.link);
return &mode->wlr_mode;
}
2018-04-21 10:42:18 +00:00
static bool drm_connector_set_cursor(struct wlr_output *output,
struct wlr_buffer *buffer, int hotspot_x, int hotspot_y) {
2018-09-17 20:25:20 +00:00
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;
2018-01-21 19:57:24 +00:00
if (!crtc) {
return false;
}
2017-06-26 07:32:36 +00:00
struct wlr_drm_plane *plane = crtc->cursor;
if (plane == NULL) {
return false;
2017-08-06 09:38:40 +00:00
}
2017-06-26 07:32:36 +00:00
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;
wlr_output_update_needs_frame(output);
}
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;
}
2017-06-26 05:34:15 +00:00
struct wlr_buffer *local_buf;
if (drm->parent) {
struct wlr_drm_format *format =
drm_plane_pick_render_format(plane, &drm->renderer);
if (format == NULL) {
wlr_log(WLR_ERROR, "Failed to pick cursor plane format");
return false;
}
2018-05-09 18:58:18 +00:00
bool ok = init_drm_surface(&plane->mgpu_surf, &drm->renderer,
buffer->width, buffer->height, format);
free(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(&plane->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;
}
2017-08-07 09:07:42 +00:00
wlr_output_update_needs_frame(output);
return true;
2017-06-16 19:38:34 +00:00
}
2018-04-21 10:42:18 +00:00
static bool drm_connector_move_cursor(struct wlr_output *output,
2017-06-16 19:38:34 +00:00
int x, int y) {
2018-09-17 20:25:20 +00:00
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);
2017-08-20 20:02:39 +00:00
enum wl_output_transform transform =
wlr_output_transform_invert(output->transform);
wlr_box_transform(&box, &box, transform, width, height);
2017-08-20 20:02:39 +00:00
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;
2017-06-16 19:38:34 +00:00
}
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) {
2018-09-17 20:25:20 +00:00
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
dealloc_crtc(conn);
conn->state = WLR_DRM_CONN_DISCONNECTED;
conn->desired_enabled = false;
conn->desired_mode = NULL;
conn->possible_crtcs = 0;
conn->pending_page_flip_crtc = 0;
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);
}
memset(&conn->output, 0, sizeof(struct wlr_output));
2017-05-07 16:26:48 +00:00
}
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 (!conn->crtc) {
return false;
}
struct wlr_drm_plane *plane = conn->crtc->cursor;
if (!plane) {
return false;
}
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;
}
2018-04-21 10:42:18 +00:00
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,
.attach_render = drm_connector_attach_render,
2020-04-02 10:41:19 +00:00
.test = drm_connector_test,
.commit = drm_connector_commit,
.rollback_render = drm_connector_rollback_render,
2018-04-21 10:42:18 +00:00
.get_gamma_size = drm_connector_get_gamma_size,
.export_dmabuf = drm_connector_export_dmabuf,
.get_cursor_formats = drm_connector_get_cursor_formats,
.get_cursor_size = drm_connector_get_cursor_size,
2017-05-07 16:26:48 +00:00
};
2017-12-19 18:59:08 +00:00
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;
}
bool drm_connector_state_is_modeset(const struct wlr_output_state *state) {
return state->committed &
(WLR_OUTPUT_STATE_ENABLED | WLR_OUTPUT_STATE_MODE);
}
bool drm_connector_state_active(struct wlr_drm_connector *conn,
const struct wlr_output_state *state) {
if (state->committed & WLR_OUTPUT_STATE_ENABLED) {
return state->enabled;
}
return conn->output.enabled;
}
void drm_connector_state_mode(struct wlr_drm_connector *conn,
const struct wlr_output_state *state, drmModeModeInfo *out) {
assert(drm_connector_state_active(conn, state));
struct wlr_output_mode *wlr_mode = conn->output.current_mode;
if (state->committed & WLR_OUTPUT_STATE_MODE) {
switch (state->mode_type) {
case WLR_OUTPUT_STATE_MODE_FIXED:
wlr_mode = state->mode;
break;
case WLR_OUTPUT_STATE_MODE_CUSTOM:;
drmModeModeInfo mode = {0};
generate_cvt_mode(&mode, state->custom_mode.width,
state->custom_mode.height,
(float)state->custom_mode.refresh / 1000, false, false);
mode.type = DRM_MODE_TYPE_USERDEF;
memcpy(out, &mode, sizeof(drmModeModeInfo));
return;
}
}
struct wlr_drm_mode *mode = (struct wlr_drm_mode *)wlr_mode;
memcpy(out, &mode->drm_mode, sizeof(drmModeModeInfo));
}
2017-07-20 11:26:53 +00:00
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,
};
2017-05-13 08:37:15 +00:00
static void dealloc_crtc(struct wlr_drm_connector *conn) {
struct wlr_drm_backend *drm = conn->backend;
if (conn->crtc == NULL) {
return;
}
wlr_drm_conn_log(conn, WLR_DEBUG, "De-allocating CRTC %zu",
conn->crtc - drm->crtcs);
struct wlr_output_state state = {
.committed = WLR_OUTPUT_STATE_ENABLED,
.enabled = false,
};
if (!drm_crtc_commit(conn, &state, 0, false)) {
// 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);
}
drm_plane_finish_surface(conn->crtc->primary);
drm_plane_finish_surface(conn->crtc->cursor);
conn->cursor_enabled = false;
conn->crtc = NULL;
}
static void realloc_crtcs(struct wlr_drm_backend *drm) {
assert(drm->num_crtcs > 0);
size_t num_outputs = wl_list_length(&drm->outputs);
if (num_outputs == 0) {
return;
backend/drm: steal CRTCs from disabled outputs This commit allows outputs that need a CRTC to steal it from user-disabled outputs. Note that in the case there are enough CRTCs, disabled outputs don't loose it (so there's no modeset and plane initialization needed after DPMS). CRTC allocation still prefers to keep the old configuration, even if that means allocating an extra CRTC to a disabled output. CRTC reallocation now happen when enabling/disabling an output as well as when trying to modeset. When enabling an output without a CRTC, we realloc to try to steal a CRTC from a disabled output (that doesn't really need the CRTC). When disabling an output, we try to give our CRTC to an output that needs one. Modesetting is similar to enabling. A new DRM connector field has been added: `desired_enabled`. Outputs without CRTCs get automatically disabled. This field keeps track of the state desired by the user, allowing to automatically re-enable outputs when a CRTC becomes free. This required some changes to the allocation algorithm. Previously, the algorithm tried to keep the previous configuration even if a new configuration with a better score was possible (it only changed configuration when the old one didn't work anymore). This is now changed and the old configuration (still preferred) is only retained without considering new possibilities when it's perfect (all outputs have CRTCs). User-disabled outputs now have `possible_crtcs` set to 0, meaning they can only retain a previous CRTC (not acquire a new one). The allocation algorithm has been updated to do not bump the score when assigning a CRTC to a disabled output.
2018-09-10 21:35:22 +00:00
}
wlr_log(WLR_DEBUG, "Reallocating CRTCs");
struct wlr_drm_connector *connectors[num_outputs];
uint32_t connector_constraints[num_outputs];
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;
}
wlr_log(WLR_DEBUG, "State before reallocation:");
size_t i = 0;
struct wlr_drm_connector *conn;
wl_list_for_each(conn, &drm->outputs, link) {
backend/drm: steal CRTCs from disabled outputs This commit allows outputs that need a CRTC to steal it from user-disabled outputs. Note that in the case there are enough CRTCs, disabled outputs don't loose it (so there's no modeset and plane initialization needed after DPMS). CRTC allocation still prefers to keep the old configuration, even if that means allocating an extra CRTC to a disabled output. CRTC reallocation now happen when enabling/disabling an output as well as when trying to modeset. When enabling an output without a CRTC, we realloc to try to steal a CRTC from a disabled output (that doesn't really need the CRTC). When disabling an output, we try to give our CRTC to an output that needs one. Modesetting is similar to enabling. A new DRM connector field has been added: `desired_enabled`. Outputs without CRTCs get automatically disabled. This field keeps track of the state desired by the user, allowing to automatically re-enable outputs when a CRTC becomes free. This required some changes to the allocation algorithm. Previously, the algorithm tried to keep the previous configuration even if a new configuration with a better score was possible (it only changed configuration when the old one didn't work anymore). This is now changed and the old configuration (still preferred) is only retained without considering new possibilities when it's perfect (all outputs have CRTCs). User-disabled outputs now have `possible_crtcs` set to 0, meaning they can only retain a previous CRTC (not acquire a new one). The allocation algorithm has been updated to do not bump the score when assigning a CRTC to a disabled output.
2018-09-10 21:35:22 +00:00
connectors[i] = conn;
backend/drm: steal CRTCs from disabled outputs This commit allows outputs that need a CRTC to steal it from user-disabled outputs. Note that in the case there are enough CRTCs, disabled outputs don't loose it (so there's no modeset and plane initialization needed after DPMS). CRTC allocation still prefers to keep the old configuration, even if that means allocating an extra CRTC to a disabled output. CRTC reallocation now happen when enabling/disabling an output as well as when trying to modeset. When enabling an output without a CRTC, we realloc to try to steal a CRTC from a disabled output (that doesn't really need the CRTC). When disabling an output, we try to give our CRTC to an output that needs one. Modesetting is similar to enabling. A new DRM connector field has been added: `desired_enabled`. Outputs without CRTCs get automatically disabled. This field keeps track of the state desired by the user, allowing to automatically re-enable outputs when a CRTC becomes free. This required some changes to the allocation algorithm. Previously, the algorithm tried to keep the previous configuration even if a new configuration with a better score was possible (it only changed configuration when the old one didn't work anymore). This is now changed and the old configuration (still preferred) is only retained without considering new possibilities when it's perfect (all outputs have CRTCs). User-disabled outputs now have `possible_crtcs` set to 0, meaning they can only retain a previous CRTC (not acquire a new one). The allocation algorithm has been updated to do not bump the score when assigning a CRTC to a disabled output.
2018-09-10 21:35:22 +00:00
wlr_log(WLR_DEBUG, " '%s' crtc=%d state=%d desired_enabled=%d",
conn->name, conn->crtc ? (int)(conn->crtc - drm->crtcs) : -1,
backend/drm: steal CRTCs from disabled outputs This commit allows outputs that need a CRTC to steal it from user-disabled outputs. Note that in the case there are enough CRTCs, disabled outputs don't loose it (so there's no modeset and plane initialization needed after DPMS). CRTC allocation still prefers to keep the old configuration, even if that means allocating an extra CRTC to a disabled output. CRTC reallocation now happen when enabling/disabling an output as well as when trying to modeset. When enabling an output without a CRTC, we realloc to try to steal a CRTC from a disabled output (that doesn't really need the CRTC). When disabling an output, we try to give our CRTC to an output that needs one. Modesetting is similar to enabling. A new DRM connector field has been added: `desired_enabled`. Outputs without CRTCs get automatically disabled. This field keeps track of the state desired by the user, allowing to automatically re-enable outputs when a CRTC becomes free. This required some changes to the allocation algorithm. Previously, the algorithm tried to keep the previous configuration even if a new configuration with a better score was possible (it only changed configuration when the old one didn't work anymore). This is now changed and the old configuration (still preferred) is only retained without considering new possibilities when it's perfect (all outputs have CRTCs). User-disabled outputs now have `possible_crtcs` set to 0, meaning they can only retain a previous CRTC (not acquire a new one). The allocation algorithm has been updated to do not bump the score when assigning a CRTC to a disabled output.
2018-09-10 21:35:22 +00:00
conn->state, conn->desired_enabled);
if (conn->crtc) {
previous_match[conn->crtc - drm->crtcs] = i;
}
backend/drm: steal CRTCs from disabled outputs This commit allows outputs that need a CRTC to steal it from user-disabled outputs. Note that in the case there are enough CRTCs, disabled outputs don't loose it (so there's no modeset and plane initialization needed after DPMS). CRTC allocation still prefers to keep the old configuration, even if that means allocating an extra CRTC to a disabled output. CRTC reallocation now happen when enabling/disabling an output as well as when trying to modeset. When enabling an output without a CRTC, we realloc to try to steal a CRTC from a disabled output (that doesn't really need the CRTC). When disabling an output, we try to give our CRTC to an output that needs one. Modesetting is similar to enabling. A new DRM connector field has been added: `desired_enabled`. Outputs without CRTCs get automatically disabled. This field keeps track of the state desired by the user, allowing to automatically re-enable outputs when a CRTC becomes free. This required some changes to the allocation algorithm. Previously, the algorithm tried to keep the previous configuration even if a new configuration with a better score was possible (it only changed configuration when the old one didn't work anymore). This is now changed and the old configuration (still preferred) is only retained without considering new possibilities when it's perfect (all outputs have CRTCs). User-disabled outputs now have `possible_crtcs` set to 0, meaning they can only retain a previous CRTC (not acquire a new one). The allocation algorithm has been updated to do not bump the score when assigning a CRTC to a disabled output.
2018-09-10 21:35:22 +00:00
// Only search CRTCs for user-enabled outputs (that are already
// connected or in need of a modeset)
if ((conn->state == WLR_DRM_CONN_CONNECTED ||
conn->state == WLR_DRM_CONN_NEEDS_MODESET) &&
conn->desired_enabled) {
connector_constraints[i] = conn->possible_crtcs;
} else {
// Will always fail to match anything
connector_constraints[i] = 0;
}
++i;
}
match_obj(num_outputs, connector_constraints,
drm->num_crtcs, previous_match, new_match);
// Converts our crtc=>connector result into a connector=>crtc one.
ssize_t connector_match[num_outputs];
for (size_t i = 0 ; i < num_outputs; ++i) {
connector_match[i] = -1;
}
for (size_t i = 0; i < drm->num_crtcs; ++i) {
if (new_match[i] != UNMATCHED) {
connector_match[new_match[i]] = i;
}
}
/*
* In the case that we add a new connector (hotplug) and we fail to
* match everything, we prefer to fail the new connector and keep all
* of the old mappings instead.
*/
for (size_t i = 0; i < num_outputs; ++i) {
struct wlr_drm_connector *conn = connectors[i];
if (conn->state == WLR_DRM_CONN_CONNECTED &&
conn->desired_enabled &&
connector_match[i] == -1) {
wlr_log(WLR_DEBUG, "Could not match a CRTC for previously connected output; "
"keeping old configuration");
return;
}
}
wlr_log(WLR_DEBUG, "State after reallocation:");
// Apply new configuration
for (size_t i = 0; i < num_outputs; ++i) {
struct wlr_drm_connector *conn = connectors[i];
bool prev_enabled = conn->crtc;
wlr_log(WLR_DEBUG, " '%s' crtc=%zd state=%d desired_enabled=%d",
conn->name, connector_match[i], conn->state, conn->desired_enabled);
// We don't need to change anything.
if (prev_enabled && connector_match[i] == conn->crtc - drm->crtcs) {
continue;
}
dealloc_crtc(conn);
if (connector_match[i] == -1) {
if (prev_enabled) {
wlr_drm_conn_log(conn, WLR_DEBUG, "Output has lost its CRTC");
conn->state = WLR_DRM_CONN_NEEDS_MODESET;
wlr_output_update_enabled(&conn->output, false);
conn->desired_mode = conn->output.current_mode;
wlr_output_update_mode(&conn->output, NULL);
}
continue;
}
conn->crtc = &drm->crtcs[connector_match[i]];
// Only realloc buffers if we have actually been modeset
if (conn->state != WLR_DRM_CONN_CONNECTED) {
continue;
}
struct wlr_output_state state = {
.committed = WLR_OUTPUT_STATE_ENABLED,
.enabled = true,
};
if (!drm_connector_init_renderer(conn, &state)) {
wlr_drm_conn_log(conn, WLR_ERROR, "Failed to initialize renderer");
wlr_output_update_enabled(&conn->output, false);
continue;
}
wlr_output_damage_whole(&conn->output);
}
}
static uint32_t get_possible_crtcs(int fd, drmModeRes *res,
drmModeConnector *conn) {
uint32_t possible_crtcs = 0;
for (int i = 0; i < conn->count_encoders; ++i) {
drmModeEncoder *enc = drmModeGetEncoder(fd, conn->encoders[i]);
if (!enc) {
continue;
}
possible_crtcs |= enc->possible_crtcs;
drmModeFreeEncoder(enc);
}
return possible_crtcs;
}
static void disconnect_drm_connector(struct wlr_drm_connector *conn);
void scan_drm_connectors(struct wlr_drm_backend *drm) {
/*
* This GPU is not really a modesetting device.
* It's just being used as a renderer.
*/
if (drm->num_crtcs == 0) {
return;
}
wlr_log(WLR_INFO, "Scanning DRM connectors on %s", drm->name);
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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;
}
2017-05-01 03:20:48 +00:00
size_t seen_len = wl_list_length(&drm->outputs);
// +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];
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for (int i = 0; i < res->count_connectors; ++i) {
drmModeConnector *drm_conn = drmModeGetConnector(drm->fd,
res->connectors[i]);
if (!drm_conn) {
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wlr_log_errno(WLR_ERROR, "Failed to get DRM connector");
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continue;
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}
drmModeEncoder *curr_enc = drmModeGetEncoder(drm->fd,
drm_conn->encoder_id);
ssize_t index = -1;
struct wlr_drm_connector *c, *wlr_conn = NULL;
wl_list_for_each(c, &drm->outputs, link) {
index++;
if (c->id == drm_conn->connector_id) {
wlr_conn = c;
break;
}
}
if (!wlr_conn) {
wlr_conn = calloc(1, sizeof(*wlr_conn));
if (!wlr_conn) {
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wlr_log_errno(WLR_ERROR, "Allocation failed");
drmModeFreeEncoder(curr_enc);
drmModeFreeConnector(drm_conn);
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continue;
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}
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wlr_conn->backend = drm;
wlr_conn->state = WLR_DRM_CONN_DISCONNECTED;
wlr_conn->id = drm_conn->connector_id;
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snprintf(wlr_conn->name, sizeof(wlr_conn->name),
"%s-%"PRIu32, conn_get_name(drm_conn->connector_type),
drm_conn->connector_type_id);
if (curr_enc) {
wlr_conn->old_crtc = drmModeGetCrtc(drm->fd, curr_enc->crtc_id);
}
wl_list_insert(drm->outputs.prev, &wlr_conn->link);
wlr_log(WLR_INFO, "Found connector '%s'", wlr_conn->name);
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} else {
seen[index] = true;
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}
if (curr_enc) {
for (size_t i = 0; i < drm->num_crtcs; ++i) {
if (drm->crtcs[i].id == curr_enc->crtc_id) {
wlr_conn->crtc = &drm->crtcs[i];
break;
}
}
} else {
wlr_conn->crtc = NULL;
}
// 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->state == WLR_DRM_CONN_DISCONNECTED &&
drm_conn->connection == DRM_MODE_CONNECTED) {
wlr_log(WLR_INFO, "'%s' connected", wlr_conn->name);
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wlr_log(WLR_DEBUG, "Current CRTC: %d",
wlr_conn->crtc ? (int)wlr_conn->crtc->id : -1);
wlr_output_init(&wlr_conn->output, &drm->backend, &output_impl,
drm->display);
memcpy(wlr_conn->output.name, wlr_conn->name,
sizeof(wlr_conn->output.name));
wlr_conn->output.phys_width = drm_conn->mmWidth;
wlr_conn->output.phys_height = drm_conn->mmHeight;
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wlr_log(WLR_INFO, "Physical size: %"PRId32"x%"PRId32,
wlr_conn->output.phys_width, wlr_conn->output.phys_height);
wlr_conn->output.subpixel = subpixel_map[drm_conn->subpixel];
get_drm_connector_props(drm->fd, wlr_conn->id, &wlr_conn->props);
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->output, 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;
}
struct wlr_output *output = &wlr_conn->output;
char description[128];
snprintf(description, sizeof(description), "%s %s %s (%s%s%s)",
output->make, output->model, output->serial, output->name,
subconnector ? " via " : "", subconnector ? subconnector : "");
wlr_output_set_description(output, description);
free(subconnector);
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wlr_log(WLR_INFO, "Detected modes:");
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for (int i = 0; i < drm_conn->count_modes; ++i) {
struct wlr_drm_mode *mode = calloc(1, sizeof(*mode));
if (!mode) {
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wlr_log_errno(WLR_ERROR, "Allocation failed");
continue;
}
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if (drm_conn->modes[i].flags & DRM_MODE_FLAG_INTERLACE) {
free(mode);
continue;
}
mode->drm_mode = drm_conn->modes[i];
mode->wlr_mode.width = mode->drm_mode.hdisplay;
mode->wlr_mode.height = mode->drm_mode.vdisplay;
mode->wlr_mode.refresh = calculate_refresh_rate(&mode->drm_mode);
if (mode->drm_mode.type & DRM_MODE_TYPE_PREFERRED) {
mode->wlr_mode.preferred = true;
}
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wlr_log(WLR_INFO, " %"PRId32"x%"PRId32"@%"PRId32" %s",
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mode->wlr_mode.width, mode->wlr_mode.height,
mode->wlr_mode.refresh,
mode->wlr_mode.preferred ? "(preferred)" : "");
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wl_list_insert(&wlr_conn->output.modes, &mode->wlr_mode.link);
}
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wlr_conn->possible_crtcs = get_possible_crtcs(drm->fd, res, drm_conn);
if (wlr_conn->possible_crtcs == 0) {
wlr_drm_conn_log(wlr_conn, WLR_ERROR, "No CRTC possible");
}
// TODO: this results in connectors being enabled without a mode
// set
wlr_output_update_enabled(&wlr_conn->output, wlr_conn->crtc != NULL);
backend/drm: steal CRTCs from disabled outputs This commit allows outputs that need a CRTC to steal it from user-disabled outputs. Note that in the case there are enough CRTCs, disabled outputs don't loose it (so there's no modeset and plane initialization needed after DPMS). CRTC allocation still prefers to keep the old configuration, even if that means allocating an extra CRTC to a disabled output. CRTC reallocation now happen when enabling/disabling an output as well as when trying to modeset. When enabling an output without a CRTC, we realloc to try to steal a CRTC from a disabled output (that doesn't really need the CRTC). When disabling an output, we try to give our CRTC to an output that needs one. Modesetting is similar to enabling. A new DRM connector field has been added: `desired_enabled`. Outputs without CRTCs get automatically disabled. This field keeps track of the state desired by the user, allowing to automatically re-enable outputs when a CRTC becomes free. This required some changes to the allocation algorithm. Previously, the algorithm tried to keep the previous configuration even if a new configuration with a better score was possible (it only changed configuration when the old one didn't work anymore). This is now changed and the old configuration (still preferred) is only retained without considering new possibilities when it's perfect (all outputs have CRTCs). User-disabled outputs now have `possible_crtcs` set to 0, meaning they can only retain a previous CRTC (not acquire a new one). The allocation algorithm has been updated to do not bump the score when assigning a CRTC to a disabled output.
2018-09-10 21:35:22 +00:00
wlr_conn->desired_enabled = true;
wlr_conn->state = WLR_DRM_CONN_NEEDS_MODESET;
new_outputs[new_outputs_len++] = wlr_conn;
} else if ((wlr_conn->state == WLR_DRM_CONN_CONNECTED ||
wlr_conn->state == WLR_DRM_CONN_NEEDS_MODESET) &&
drm_conn->connection != DRM_MODE_CONNECTED) {
wlr_log(WLR_INFO, "'%s' disconnected", wlr_conn->name);
disconnect_drm_connector(wlr_conn);
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}
drmModeFreeEncoder(curr_enc);
drmModeFreeConnector(drm_conn);
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}
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->outputs);
wl_list_for_each_reverse_safe(conn, tmp_conn, &drm->outputs, link) {
index--;
if (index >= seen_len || seen[index]) {
continue;
}
wlr_log(WLR_INFO, "'%s' disappeared", conn->name);
destroy_drm_connector(conn);
}
realloc_crtcs(drm);
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");
wlr_signal_emit_safe(&drm->backend.events.new_output,
&conn->output);
}
backend/drm: steal CRTCs from disabled outputs This commit allows outputs that need a CRTC to steal it from user-disabled outputs. Note that in the case there are enough CRTCs, disabled outputs don't loose it (so there's no modeset and plane initialization needed after DPMS). CRTC allocation still prefers to keep the old configuration, even if that means allocating an extra CRTC to a disabled output. CRTC reallocation now happen when enabling/disabling an output as well as when trying to modeset. When enabling an output without a CRTC, we realloc to try to steal a CRTC from a disabled output (that doesn't really need the CRTC). When disabling an output, we try to give our CRTC to an output that needs one. Modesetting is similar to enabling. A new DRM connector field has been added: `desired_enabled`. Outputs without CRTCs get automatically disabled. This field keeps track of the state desired by the user, allowing to automatically re-enable outputs when a CRTC becomes free. This required some changes to the allocation algorithm. Previously, the algorithm tried to keep the previous configuration even if a new configuration with a better score was possible (it only changed configuration when the old one didn't work anymore). This is now changed and the old configuration (still preferred) is only retained without considering new possibilities when it's perfect (all outputs have CRTCs). User-disabled outputs now have `possible_crtcs` set to 0, meaning they can only retain a previous CRTC (not acquire a new one). The allocation algorithm has been updated to do not bump the score when assigning a CRTC to a disabled output.
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attempt_enable_needs_modeset(drm);
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}
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_backend *drm = data;
bool found = false;
struct wlr_drm_connector *conn;
wl_list_for_each(conn, &drm->outputs, link) {
if (conn->pending_page_flip_crtc == crtc_id) {
found = true;
break;
}
}
if (!found) {
wlr_log(WLR_DEBUG, "Unexpected page-flip event for CRTC %u", crtc_id);
return;
}
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conn->pending_page_flip_crtc = 0;
backend/drm: steal CRTCs from disabled outputs This commit allows outputs that need a CRTC to steal it from user-disabled outputs. Note that in the case there are enough CRTCs, disabled outputs don't loose it (so there's no modeset and plane initialization needed after DPMS). CRTC allocation still prefers to keep the old configuration, even if that means allocating an extra CRTC to a disabled output. CRTC reallocation now happen when enabling/disabling an output as well as when trying to modeset. When enabling an output without a CRTC, we realloc to try to steal a CRTC from a disabled output (that doesn't really need the CRTC). When disabling an output, we try to give our CRTC to an output that needs one. Modesetting is similar to enabling. A new DRM connector field has been added: `desired_enabled`. Outputs without CRTCs get automatically disabled. This field keeps track of the state desired by the user, allowing to automatically re-enable outputs when a CRTC becomes free. This required some changes to the allocation algorithm. Previously, the algorithm tried to keep the previous configuration even if a new configuration with a better score was possible (it only changed configuration when the old one didn't work anymore). This is now changed and the old configuration (still preferred) is only retained without considering new possibilities when it's perfect (all outputs have CRTCs). User-disabled outputs now have `possible_crtcs` set to 0, meaning they can only retain a previous CRTC (not acquire a new one). The allocation algorithm has been updated to do not bump the score when assigning a CRTC to a disabled output.
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if (conn->state != WLR_DRM_CONN_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);
}
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 && plane->current_fb &&
wlr_client_buffer_get(plane->current_fb->wlr_buf)) {
present_flags |= WLR_OUTPUT_PRESENT_ZERO_COPY;
}
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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,
.when = &present_time,
.seq = seq,
.refresh = mhz_to_nsec(conn->output.refresh),
.flags = present_flags,
};
wlr_output_send_present(&conn->output, &present_event);
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if (drm->session->active && conn->output.enabled) {
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wlr_output_send_frame(&conn->output);
}
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}
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int handle_drm_event(int fd, uint32_t mask, void *data) {
struct wlr_drm_backend *drm = data;
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drmEventContext event = {
.version = 3,
.page_flip_handler2 = handle_page_flip,
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};
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if (drmHandleEvent(fd, &event) != 0) {
wlr_log(WLR_ERROR, "drmHandleEvent failed");
wl_display_terminate(drm->display);
}
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return 1;
}
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void restore_drm_outputs(struct wlr_drm_backend *drm) {
uint64_t to_close = (UINT64_C(1) << wl_list_length(&drm->outputs)) - 1;
struct wlr_drm_connector *conn;
wl_list_for_each(conn, &drm->outputs, link) {
if (conn->state == WLR_DRM_CONN_CONNECTED) {
conn->state = WLR_DRM_CONN_CLEANUP;
}
}
time_t timeout = time(NULL) + 5;
while (to_close && time(NULL) < timeout) {
handle_drm_event(drm->fd, 0, drm);
size_t i = 0;
struct wlr_drm_connector *conn;
wl_list_for_each(conn, &drm->outputs, link) {
if (conn->state != WLR_DRM_CONN_CLEANUP || !conn->pending_page_flip_crtc) {
to_close &= ~(UINT64_C(1) << i);
}
i++;
}
}
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if (to_close) {
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wlr_log(WLR_ERROR, "Timed out stopping output renderers");
}
wl_list_for_each(conn, &drm->outputs, link) {
drmModeCrtc *crtc = conn->old_crtc;
if (!crtc) {
continue;
}
drmModeSetCrtc(drm->fd, crtc->crtc_id, crtc->buffer_id, crtc->x, crtc->y,
&conn->id, 1, &crtc->mode);
drmModeSetCursor(drm->fd, crtc->crtc_id, 0, 0, 0);
}
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}
static void disconnect_drm_connector(struct wlr_drm_connector *conn) {
if (conn->state == WLR_DRM_CONN_DISCONNECTED) {
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return;
}
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// This will cleanup the compositor-facing wlr_output, but won't destroy
// our wlr_drm_connector.
wlr_output_destroy(&conn->output);
assert(conn->state == WLR_DRM_CONN_DISCONNECTED);
}
void destroy_drm_connector(struct wlr_drm_connector *conn) {
disconnect_drm_connector(conn);
drmModeFreeCrtc(conn->old_crtc);
wl_list_remove(&conn->link);
free(conn);
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}