/*
* Copyright © 2014 Intel Corporation
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#ifdef HAVE_DIX_CONFIG_H
#include "dix-config.h"
#endif
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/types.h>
#include <time.h>
#include <xf86.h>
#include <xf86Crtc.h>
#include <xf86drm.h>
#include <xf86str.h>
#include <present.h>
#include "driver.h"
#include "drmmode_display.h"
#if 0
#define DebugPresent(x) ErrorF x
#else
#define DebugPresent(x)
#endif
struct ms_present_vblank_event {
uint64_t event_id;
Bool unflip;
};
static RRCrtcPtr
ms_present_get_crtc(WindowPtr window)
{
return ms_randr_crtc_covering_drawable(&window->drawable);
}
static int
ms_present_get_ust_msc(RRCrtcPtr crtc, uint64_t *ust, uint64_t *msc)
{
xf86CrtcPtr xf86_crtc = crtc->devPrivate;
return ms_get_crtc_ust_msc(xf86_crtc, ust, msc);
}
/*
* Changes the variable refresh state for every CRTC on the screen.
*/
void
ms_present_set_screen_vrr(ScrnInfoPtr scrn, Bool vrr_enabled)
{
xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(scrn);
xf86CrtcPtr crtc;
int i;
for (i = 0; i < config->num_crtc; i++) {
crtc = config->crtc[i];
drmmode_crtc_set_vrr(crtc, vrr_enabled);
}
}
/*
* Called when the queued vblank event has occurred
*/
static void
ms_present_vblank_handler(uint64_t msc, uint64_t usec, void *data)
{
struct ms_present_vblank_event *event = data;
DebugPresent(("\t\tmh %lld msc %llu\n",
(long long) event->event_id, (long long) msc));
present_event_notify(event->event_id, usec, msc);
free(event);
}
/*
* Called when the queued vblank is aborted
*/
static void
ms_present_vblank_abort(void *data)
{
struct ms_present_vblank_event *event = data;
DebugPresent(("\t\tma %lld\n", (long long) event->event_id));
free(event);
}
/*
* Queue an event to report back to the Present extension when the specified
* MSC has past
*/
static int
ms_present_queue_vblank(RRCrtcPtr crtc,
uint64_t event_id,
uint64_t msc)
{
xf86CrtcPtr xf86_crtc = crtc->devPrivate;
struct ms_present_vblank_event *event;
uint32_t seq;
event = calloc(sizeof(struct ms_present_vblank_event), 1);
if (!event)
return BadAlloc;
event->event_id = event_id;
seq = ms_drm_queue_alloc(xf86_crtc, event,
ms_present_vblank_handler,
ms_present_vblank_abort);
if (!seq) {
free(event);
return BadAlloc;
}
if (!ms_queue_vblank(xf86_crtc, MS_QUEUE_ABSOLUTE, msc, NULL, seq))
return BadAlloc;
DebugPresent(("\t\tmq %lld seq %u msc %llu\n",
(long long) event_id, seq, (long long) msc));
return Success;
}
static Bool
ms_present_event_match(void *data, void *match_data)
{
struct ms_present_vblank_event *event = data;
uint64_t *match = match_data;
return *match == event->event_id;
}
/*
* Remove a pending vblank event from the DRM queue so that it is not reported
* to the extension
*/
static void
ms_present_abort_vblank(RRCrtcPtr crtc, uint64_t event_id, uint64_t msc)
{
ScreenPtr screen = crtc->pScreen;
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
ms_drm_abort(scrn, ms_present_event_match, &event_id);
}
/*
* Flush our batch buffer when requested by the Present extension.
*/
static void
ms_present_flush(WindowPtr window)
{
#ifdef GLAMOR_HAS_GBM
ScreenPtr screen = window->drawable.pScreen;
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
modesettingPtr ms = modesettingPTR(scrn);
if (ms->drmmode.glamor)
ms->glamor.block_handler(screen);
#endif
}
#ifdef GLAMOR_HAS_GBM
/**
* Callback for the DRM event queue when a flip has completed on all pipes
*
* Notify the extension code
*/
static void
ms_present_flip_handler(modesettingPtr ms, uint64_t msc,
uint64_t ust, void *data)
{
struct ms_present_vblank_event *event = data;
DebugPresent(("\t\tms:fc %lld msc %llu ust %llu\n",
(long long) event->event_id,
(long long) msc, (long long) ust));
if (event->unflip)
ms->drmmode.present_flipping = FALSE;
ms_present_vblank_handler(msc, ust, event);
}
/*
* Callback for the DRM queue abort code. A flip has been aborted.
*/
static void
ms_present_flip_abort(modesettingPtr ms, void *data)
{
struct ms_present_vblank_event *event = data;
DebugPresent(("\t\tms:fa %lld\n", (long long) event->event_id));
free(event);
}
/*
* Test to see if page flipping is possible on the target crtc
*
* We ignore sw-cursors when *disabling* flipping, we may very well be
* returning to scanning out the normal framebuffer *because* we just
* switched to sw-cursor mode and check_flip just failed because of that.
*/
static Bool
ms_present_check_unflip(RRCrtcPtr crtc,
WindowPtr window,
PixmapPtr pixmap,
Bool sync_flip,
PresentFlipReason *reason)
{
ScreenPtr screen = window->drawable.pScreen;
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
modesettingPtr ms = modesettingPTR(scrn);
xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(scrn);
int num_crtcs_on = 0;
int i;
struct gbm_bo *gbm;
if (!ms->drmmode.pageflip)
return FALSE;
if (ms->drmmode.dri2_flipping)
return FALSE;
if (!scrn->vtSema)
return FALSE;
for (i = 0; i < config->num_crtc; i++) {
drmmode_crtc_private_ptr drmmode_crtc = config->crtc[i]->driver_private;
/* Don't do pageflipping if CRTCs are rotated. */
if (drmmode_crtc->rotate_bo.gbm)
return FALSE;
if (xf86_crtc_on(config->crtc[i]))
num_crtcs_on++;
}
/* We can't do pageflipping if all the CRTCs are off. */
if (num_crtcs_on == 0)
return FALSE;
/*
* Check stride, can't change that reliably on flip on some drivers, unless
* the kms driver is atomic_modeset_capable.
*/
if (!ms->atomic_modeset_capable &&
pixmap->devKind != drmmode_bo_get_pitch(&ms->drmmode.front_bo))
return FALSE;
if (!ms->drmmode.glamor)
return FALSE;
#ifdef GBM_BO_WITH_MODIFIERS
/* Check if buffer format/modifier is supported by all active CRTCs */
gbm = ms->glamor.gbm_bo_from_pixmap(screen, pixmap);
if (gbm) {
uint32_t format;
uint64_t modifier;
format = gbm_bo_get_format(gbm);
modifier = gbm_bo_get_modifier(gbm);
gbm_bo_destroy(gbm);
if (!drmmode_is_format_supported(scrn, format, modifier)) {
if (reason)
*reason = PRESENT_FLIP_REASON_BUFFER_FORMAT;
return FALSE;
}
}
#endif
/* Make sure there's a bo we can get to */
/* XXX: actually do this. also...is it sufficient?
* if (!glamor_get_pixmap_private(pixmap))
* return FALSE;
*/
return TRUE;
}
static Bool
ms_present_check_flip(RRCrtcPtr crtc,
WindowPtr window,
PixmapPtr pixmap,
Bool sync_flip,
PresentFlipReason *reason)
{
ScreenPtr screen = window->drawable.pScreen;
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
modesettingPtr ms = modesettingPTR(scrn);
if (ms->drmmode.sprites_visible > 0)
return FALSE;
if(!ms_present_check_unflip(crtc, window, pixmap, sync_flip, reason))
return FALSE;
ms->flip_window = window;
return TRUE;
}
/*
* Queue a flip on 'crtc' to 'pixmap' at 'target_msc'. If 'sync_flip' is true,
* then wait for vblank. Otherwise, flip immediately
*/
static Bool
ms_present_flip(RRCrtcPtr crtc,
uint64_t event_id,
uint64_t target_msc,
PixmapPtr pixmap,
Bool sync_flip)
{
ScreenPtr screen = crtc->pScreen;
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
modesettingPtr ms = modesettingPTR(scrn);
xf86CrtcPtr xf86_crtc = crtc->devPrivate;
drmmode_crtc_private_ptr drmmode_crtc = xf86_crtc->driver_private;
Bool ret;
struct ms_present_vblank_event *event;
if (!ms_present_check_flip(crtc, ms->flip_window, pixmap, sync_flip, NULL))
return FALSE;
event = calloc(1, sizeof(struct ms_present_vblank_event));
if (!event)
return FALSE;
DebugPresent(("\t\tms:pf %lld msc %llu\n",
(long long) event_id, (long long) target_msc));
event->event_id = event_id;
event->unflip = FALSE;
/* A window can only flip if it covers the entire X screen.
* Only one window can flip at a time.
*
* If the window also has the variable refresh property then
* variable refresh supported can be enabled on every CRTC.
*/
if (ms->vrr_support && ms->is_connector_vrr_capable &&
ms_window_has_variable_refresh(ms, ms->flip_window)) {
ms_present_set_screen_vrr(scrn, TRUE);
}
ret = ms_do_pageflip(screen, pixmap, event, drmmode_crtc->vblank_pipe, !sync_flip,
ms_present_flip_handler, ms_present_flip_abort,
"Present-flip");
if (ret)
ms->drmmode.present_flipping = TRUE;
return ret;
}
/*
* Queue a flip back to the normal frame buffer
*/
static void
ms_present_unflip(ScreenPtr screen, uint64_t event_id)
{
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
modesettingPtr ms = modesettingPTR(scrn);
PixmapPtr pixmap = screen->GetScreenPixmap(screen);
xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(scrn);
int i;
ms_present_set_screen_vrr(scrn, FALSE);
if (ms_present_check_unflip(NULL, screen->root, pixmap, TRUE, NULL)) {
struct ms_present_vblank_event *event;
event = calloc(1, sizeof(struct ms_present_vblank_event));
if (!event)
return;
event->event_id = event_id;
event->unflip = TRUE;
if (ms_do_pageflip(screen, pixmap, event, -1, FALSE,
ms_present_flip_handler, ms_present_flip_abort,
"Present-unflip")) {
return;
}
}
for (i = 0; i < config->num_crtc; i++) {
xf86CrtcPtr crtc = config->crtc[i];
drmmode_crtc_private_ptr drmmode_crtc = crtc->driver_private;
if (!crtc->enabled)
continue;
/* info->drmmode.fb_id still points to the FB for the last flipped BO.
* Clear it, drmmode_set_mode_major will re-create it
*/
if (drmmode_crtc->drmmode->fb_id) {
drmModeRmFB(drmmode_crtc->drmmode->fd,
drmmode_crtc->drmmode->fb_id);
drmmode_crtc->drmmode->fb_id = 0;
}
if (drmmode_crtc->dpms_mode == DPMSModeOn)
crtc->funcs->set_mode_major(crtc, &crtc->mode, crtc->rotation,
crtc->x, crtc->y);
else
drmmode_crtc->need_modeset = TRUE;
}
present_event_notify(event_id, 0, 0);
ms->drmmode.present_flipping = FALSE;
}
#endif
static present_screen_info_rec ms_present_screen_info = {
.version = PRESENT_SCREEN_INFO_VERSION,
.get_crtc = ms_present_get_crtc,
.get_ust_msc = ms_present_get_ust_msc,
.queue_vblank = ms_present_queue_vblank,
.abort_vblank = ms_present_abort_vblank,
.flush = ms_present_flush,
.capabilities = PresentCapabilityNone,
#ifdef GLAMOR_HAS_GBM
.check_flip = NULL,
.check_flip2 = ms_present_check_flip,
.flip = ms_present_flip,
.unflip = ms_present_unflip,
#endif
};
Bool
ms_present_screen_init(ScreenPtr screen)
{
ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
modesettingPtr ms = modesettingPTR(scrn);
uint64_t value;
int ret;
ret = drmGetCap(ms->fd, DRM_CAP_ASYNC_PAGE_FLIP, &value);
if (ret == 0 && value == 1) {
ms_present_screen_info.capabilities |= PresentCapabilityAsync;
ms->drmmode.can_async_flip = TRUE;
}
return present_screen_init(screen, &ms_present_screen_info);
}