<div dir="ltr"> <div class="gmail_extra"> <div class="gmail_quote">On Thu, Dec 11, 2014 at 3:16 PM, Kenneth Graunke <<a href="mailto:kenneth@whitecape.org" target="_blank">kenneth@whitecape.org</a>> wrote:<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">modesetting hooked up vblank support for DRI2, but was missing support for vblanks in Present. This is mostly copy and pasted from Keith's code in the intel driver. Signed-off-by: Kenneth Graunke <<a href="mailto:kenneth@whitecape.org" target="_blank">kenneth@whitecape.org</a>> --- hw/xfree86/drivers/modesetting/Makefile.am | 1 + hw/xfree86/drivers/modesetting/driver.c | 5 + hw/xfree86/drivers/modesetting/driver.h | 6 + hw/xfree86/drivers/modesetting/present.c | 237 +++++++++++++++++++++++++++++ hw/xfree86/drivers/modesetting/vblank.c | 18 +++ 5 files changed, 267 insertions(+) create mode 100644 hw/xfree86/drivers/modesetting/present.c diff --git a/hw/xfree86/drivers/modesetting/Makefile.am b/hw/xfree86/drivers/modesetting/Makefile.am index 921ca00..82c4f2f 100644 --- a/hw/xfree86/drivers/modesetting/Makefile.am +++ b/hw/xfree86/drivers/modesetting/Makefile.am @@ -50,6 +50,7 @@ modesetting_drv_la_SOURCES = \ drmmode_display.h \ dumb_bo.c \ dumb_bo.h \ + present.c \ vblank.c \ $(NULL) diff --git a/hw/xfree86/drivers/modesetting/driver.c b/hw/xfree86/drivers/modesetting/driver.c index 476c814..5dda96b 100644 --- a/hw/xfree86/drivers/modesetting/driver.c +++ b/hw/xfree86/drivers/modesetting/driver.c @@ -1113,6 +1113,11 @@ ScreenInit(ScreenPtr pScreen, int argc, char **argv) xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Failed to initialize the DRI2 extension.\n"); } + + if (!ms_present_screen_init(pScreen)) { + xf86DrvMsg(pScrn->scrnIndex, X_ERROR, + "Failed to initialize the Present extension.\n"); + } } #endif diff --git a/hw/xfree86/drivers/modesetting/driver.h b/hw/xfree86/drivers/modesetting/driver.h index 4267fa1..3decc3e 100644 --- a/hw/xfree86/drivers/modesetting/driver.h +++ b/hw/xfree86/drivers/modesetting/driver.h @@ -114,6 +114,10 @@ uint32_t ms_drm_queue_alloc(xf86CrtcPtr crtc, ms_drm_handler_proc handler, ms_drm_abort_proc abort); +void ms_drm_abort(ScrnInfoPtr scrn, + Bool (*match)(void *data, void *match_data), + void *match_data); + xf86CrtcPtr ms_dri2_crtc_covering_drawable(DrawablePtr pDraw); xf86CrtcPtr ms_covering_crtc(ScrnInfoPtr scrn, BoxPtr box, xf86CrtcPtr desired, BoxPtr crtc_box_ret); @@ -129,3 +133,5 @@ void ms_dri2_close_screen(ScreenPtr screen); Bool ms_vblank_screen_init(ScreenPtr screen); void ms_vblank_close_screen(ScreenPtr screen); + +Bool ms_present_screen_init(ScreenPtr screen); diff --git a/hw/xfree86/drivers/modesetting/present.c b/hw/xfree86/drivers/modesetting/present.c new file mode 100644 index 0000000..92de421 --- /dev/null +++ b/hw/xfree86/drivers/modesetting/present.c @@ -0,0 +1,237 @@ +/* + * 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 <poll.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" </blockquote><div> </div><div>You need to include galmor.h here. It won't build for me without it. </div><div>--Jason </div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> + +#if 0 +#define DebugPresent(x) ErrorF x +#else +#define DebugPresent(x) +#endif + +struct ms_present_vblank_event { + uint64_t event_id; +}; + +static RRCrtcPtr +ms_present_get_crtc(WindowPtr window) +{ + ScreenPtr screen = window->drawable.pScreen; + ScrnInfoPtr pScrn = xf86ScreenToScrn(screen); + BoxRec box, crtcbox; + xf86CrtcPtr crtc; + RRCrtcPtr randr_crtc = NULL; + + box.x1 = window->drawable.x; + box.y1 = window->drawable.y; + box.x2 = box.x1 + window->drawable.width; + box.y2 = box.y1 + window->drawable.height; + + crtc = ms_covering_crtc(pScrn, &box, NULL, &crtcbox); + + /* Make sure the CRTC is valid and this is the real front buffer */ + if (crtc != NULL && !crtc->rotatedData) + randr_crtc = crtc->randr_crtc; + + return randr_crtc; +} + +static int +ms_present_get_ust_msc(RRCrtcPtr crtc, CARD64 *ust, CARD64 *msc) +{ + xf86CrtcPtr xf86_crtc = crtc->devPrivate; + + return ms_get_crtc_ust_msc(xf86_crtc, ust, msc); +} + +/* + * Flush the DRM event queue when full; makes space for new events. + */ +static Bool +ms_flush_drm_events(ScreenPtr screen) +{ + ScrnInfoPtr scrn = xf86ScreenToScrn(screen); + modesettingPtr ms = modesettingPTR(scrn); + + struct pollfd p = { .fd = ms->fd, .events = POLLIN }; + int r; + + do { + r = poll(&p, 1, 0); + } while (r == -1 && (errno == EINTR || errno == EAGAIN)); + + if (r <= 0) + return 0; + + return drmHandleEvent(ms->fd, &ms->event_context); +} + +/* + * 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; + + 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; + + 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; + ScreenPtr screen = crtc->pScreen; + ScrnInfoPtr scrn = xf86ScreenToScrn(screen); + modesettingPtr ms = modesettingPTR(scrn); + drmmode_crtc_private_ptr drmmode_crtc = xf86_crtc->driver_private; + struct ms_present_vblank_event *event; + drmVBlank vbl; + int ret; + 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; + } + + vbl.request.type = + DRM_VBLANK_ABSOLUTE | DRM_VBLANK_EVENT | drmmode_crtc->vblank_pipe; + vbl.request.sequence = msc; + vbl.request.signal = seq; + for (;;) { + ret = drmWaitVBlank(ms->fd, &vbl); + if (!ret) + break; + if (errno != EBUSY || !ms_flush_drm_events(screen)) + return BadAlloc; + } + DebugPresent(("\t\tiq %lld seq %u msc %llu (hw msc %u)\n", + (long long) event_id, seq, (long long) msc, + vbl.request.sequence)); + 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) +{ + ScreenPtr screen = window->drawable.pScreen; + ScrnInfoPtr scrn = xf86ScreenToScrn(screen); + modesettingPtr ms = modesettingPTR(scrn); + + if (ms->drmmode.glamor) + glamor_block_handler(screen); +} + +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, + .check_flip = 0, + .flip = 0, + .unflip = 0, +}; + +Bool +ms_present_screen_init(ScreenPtr screen) +{ + return present_screen_init(screen, &ms_present_screen_info); +} diff --git a/hw/xfree86/drivers/modesetting/vblank.c b/hw/xfree86/drivers/modesetting/vblank.c index 5031ef8..c123205 100644 --- a/hw/xfree86/drivers/modesetting/vblank.c +++ b/hw/xfree86/drivers/modesetting/vblank.c @@ -323,6 +323,24 @@ ms_drm_abort_scrn(ScrnInfoPtr scrn) } /* + * Externally usable abort function that uses a callback to match a single + * queued entry to abort + */ +void +ms_drm_abort(ScrnInfoPtr scrn, Bool (*match)(void *data, void *match_data), + void *match_data) +{ + struct ms_drm_queue *q; + + xorg_list_for_each_entry(q, &ms_drm_queue, list) { + if (match(q->data, match_data)) { + ms_drm_abort_one(q); + break; + } + } +} + +/* * General DRM kernel handler. Looks for the matching sequence number in the * drm event queue and calls the handler for it. */ -- 2.1.3 _______________________________________________ <a href="mailto:xorg-devel@lists.x.org" target="_blank">xorg-devel@lists.x.org</a>: X.Org development Archives: <a href="http://lists.x.org/archives/xorg-devel" target="_blank">http://lists.x.org/archives/xorg-devel</a> Info: <a href="http://lists.x.org/mailman/listinfo/xorg-devel" target="_blank">http://lists.x.org/mailman/listinfo/xorg-devel</a></blockquote></div></div></div>