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#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include "xorg-server.h"
#include "nv_include.h"
#ifdef DRI2
#include "dri2.h"
#endif
#if defined(DRI2) && DRI2INFOREC_VERSION >= 3
struct nouveau_dri2_buffer {
DRI2BufferRec base;
PixmapPtr ppix;
};
static inline struct nouveau_dri2_buffer *
nouveau_dri2_buffer(DRI2BufferPtr buf)
{
return (struct nouveau_dri2_buffer *)buf;
}
DRI2BufferPtr
nouveau_dri2_create_buffer(DrawablePtr pDraw, unsigned int attachment,
unsigned int format)
{
ScreenPtr pScreen = pDraw->pScreen;
NVPtr pNv = NVPTR(xf86Screens[pScreen->myNum]);
struct nouveau_dri2_buffer *nvbuf;
PixmapPtr ppix;
nvbuf = calloc(1, sizeof(*nvbuf));
if (!nvbuf)
return NULL;
if (attachment == DRI2BufferFrontLeft) {
if (pDraw->type == DRAWABLE_PIXMAP) {
ppix = (PixmapPtr)pDraw;
} else {
WindowPtr pwin = (WindowPtr)pDraw;
ppix = pScreen->GetWindowPixmap(pwin);
}
ppix->refcnt++;
} else {
unsigned int usage_hint = NOUVEAU_CREATE_PIXMAP_TILED;
if (attachment == DRI2BufferDepth ||
attachment == DRI2BufferDepthStencil)
usage_hint |= NOUVEAU_CREATE_PIXMAP_ZETA;
else
usage_hint |= NOUVEAU_CREATE_PIXMAP_SCANOUT;
ppix = pScreen->CreatePixmap(pScreen, pDraw->width,
pDraw->height, pDraw->depth,
usage_hint);
}
pNv->exa_force_cp = TRUE;
exaMoveInPixmap(ppix);
pNv->exa_force_cp = FALSE;
nvbuf->base.attachment = attachment;
nvbuf->base.pitch = ppix->devKind;
nvbuf->base.cpp = ppix->drawable.bitsPerPixel / 8;
nvbuf->base.driverPrivate = nvbuf;
nvbuf->base.format = format;
nvbuf->base.flags = 0;
nvbuf->ppix = ppix;
nouveau_bo_handle_get(nouveau_pixmap(ppix)->bo, &nvbuf->base.name);
return &nvbuf->base;
}
void
nouveau_dri2_destroy_buffer(DrawablePtr pDraw, DRI2BufferPtr buf)
{
struct nouveau_dri2_buffer *nvbuf;
nvbuf = nouveau_dri2_buffer(buf);
if (!nvbuf)
return;
pDraw->pScreen->DestroyPixmap(nvbuf->ppix);
free(nvbuf);
}
void
nouveau_dri2_copy_region(DrawablePtr pDraw, RegionPtr pRegion,
DRI2BufferPtr pDstBuffer, DRI2BufferPtr pSrcBuffer)
{
struct nouveau_dri2_buffer *src = nouveau_dri2_buffer(pSrcBuffer);
struct nouveau_dri2_buffer *dst = nouveau_dri2_buffer(pDstBuffer);
PixmapPtr pspix = src->ppix, pdpix = dst->ppix;
ScreenPtr pScreen = pDraw->pScreen;
RegionPtr pCopyClip;
GCPtr pGC;
if (src->base.attachment == DRI2BufferFrontLeft)
pspix = (PixmapPtr)pDraw;
if (dst->base.attachment == DRI2BufferFrontLeft)
pdpix = (PixmapPtr)pDraw;
pGC = GetScratchGC(pDraw->depth, pScreen);
pCopyClip = REGION_CREATE(pScreen, NULL, 0);
REGION_COPY(pScreen, pCopyClip, pRegion);
pGC->funcs->ChangeClip(pGC, CT_REGION, pCopyClip, 0);
ValidateGC(&pdpix->drawable, pGC);
pGC->ops->CopyArea(&pspix->drawable, &pdpix->drawable, pGC, 0, 0,
pDraw->width, pDraw->height, 0, 0);
FreeScratchGC(pGC);
}
struct nouveau_dri2_vblank_state {
enum {
SWAP
} action;
ClientPtr client;
XID draw;
DRI2BufferPtr dst;
DRI2BufferPtr src;
DRI2SwapEventPtr func;
void *data;
};
static Bool
can_sync_to_vblank(DrawablePtr draw)
{
ScrnInfoPtr scrn = xf86Screens[draw->pScreen->myNum];
NVPtr pNv = NVPTR(scrn);
PixmapPtr pix = NVGetDrawablePixmap(draw);
return pNv->glx_vblank &&
nouveau_exa_pixmap_is_onscreen(pix) &&
nv_window_belongs_to_crtc(scrn, draw->x, draw->y,
draw->width, draw->height);
}
static int
nouveau_wait_vblank(DrawablePtr draw, int type, CARD64 msc,
CARD64 *pmsc, CARD64 *pust, void *data)
{
ScrnInfoPtr scrn = xf86Screens[draw->pScreen->myNum];
NVPtr pNv = NVPTR(scrn);
int crtcs = nv_window_belongs_to_crtc(scrn, draw->x, draw->y,
draw->width, draw->height);
drmVBlank vbl;
int ret;
vbl.request.type = type | (crtcs == 2 ? DRM_VBLANK_SECONDARY : 0);
vbl.request.sequence = msc;
vbl.request.signal = (unsigned long)data;
ret = drmWaitVBlank(nouveau_device(pNv->dev)->fd, &vbl);
if (ret) {
xf86DrvMsg(scrn->scrnIndex, X_WARNING,
"Wait for VBlank failed: %s\n", strerror(errno));
return ret;
}
if (pmsc)
*pmsc = vbl.reply.sequence;
if (pust)
*pust = (CARD64)vbl.reply.tval_sec * 1000000 +
vbl.reply.tval_usec;
return 0;
}
static void
nouveau_dri2_finish_swap(DrawablePtr draw, unsigned int frame,
unsigned int tv_sec, unsigned int tv_usec,
struct nouveau_dri2_vblank_state *s)
{
ScrnInfoPtr scrn = xf86Screens[draw->pScreen->myNum];
NVPtr pNv = NVPTR(scrn);
PixmapPtr dst_pix = nouveau_dri2_buffer(s->dst)->ppix;
PixmapPtr src_pix = nouveau_dri2_buffer(s->src)->ppix;
struct nouveau_bo *dst_bo = nouveau_pixmap_bo(dst_pix);
struct nouveau_bo *src_bo = nouveau_pixmap_bo(src_pix);
struct nouveau_channel *chan = pNv->chan;
BoxRec box = { 0, 0, draw->width, draw->height };
RegionRec region;
int ret;
/* Throttle on the previous frame before swapping */
nouveau_bo_map(dst_bo, NOUVEAU_BO_RD);
nouveau_bo_unmap(dst_bo);
if (can_sync_to_vblank(draw)) {
int x1 = draw->x, y1 = draw->y,
x2 = draw->x + draw->width,
y2 = draw->y + draw->height;
/* Reference the back buffer to sync it to vblank */
WAIT_RING(chan, 1);
OUT_RELOC(chan, src_bo, 0,
NOUVEAU_BO_VRAM | NOUVEAU_BO_RD, 0, 0);
if (pNv->Architecture >= NV_ARCH_50)
NV50SyncToVBlank(dst_pix, x1, y1, x2, y2);
else
NV11SyncToVBlank(dst_pix, x1, y1, x2, y2);
FIRE_RING(chan);
}
RegionInit(®ion, &box, 0);
nouveau_dri2_copy_region(draw, ®ion, s->dst, s->src);
DRI2SwapComplete(s->client, draw, frame, tv_sec, tv_usec,
DRI2_BLIT_COMPLETE, s->func, s->data);
free(s);
}
static Bool
nouveau_dri2_schedule_swap(ClientPtr client, DrawablePtr draw,
DRI2BufferPtr dst, DRI2BufferPtr src,
CARD64 *target_msc, CARD64 divisor, CARD64 remainder,
DRI2SwapEventPtr func, void *data)
{
struct nouveau_dri2_vblank_state *s;
CARD64 current_msc;
int ret;
/* Initialize a swap structure */
s = malloc(sizeof(*s));
if (!s)
return FALSE;
*s = (struct nouveau_dri2_vblank_state)
{ SWAP, client, draw->id, dst, src, func, data };
if (can_sync_to_vblank(draw)) {
/* Get current sequence */
ret = nouveau_wait_vblank(draw, DRM_VBLANK_RELATIVE, 0,
¤t_msc, NULL, NULL);
if (ret)
goto fail;
/* Calculate a swap target if we don't have one */
if (current_msc >= *target_msc && divisor)
*target_msc = current_msc + divisor
- (current_msc - remainder) % divisor;
/* Request a vblank event one frame before the target */
ret = nouveau_wait_vblank(draw, DRM_VBLANK_ABSOLUTE |
DRM_VBLANK_EVENT,
max(current_msc, *target_msc - 1),
NULL, NULL, s);
if (ret)
goto fail;
} else {
/* We can't/don't want to sync to vblank, just swap. */
nouveau_dri2_finish_swap(draw, 0, 0, 0, s);
}
return TRUE;
fail:
free(s);
return FALSE;
}
void
nouveau_dri2_vblank_handler(int fd, unsigned int frame,
unsigned int tv_sec, unsigned int tv_usec,
void *event_data)
{
struct nouveau_dri2_vblank_state *s = event_data;
DrawablePtr draw;
int ret;
ret = dixLookupDrawable(&draw, s->draw, serverClient,
M_ANY, DixWriteAccess);
if (ret)
return;
switch (s->action) {
case SWAP:
nouveau_dri2_finish_swap(draw, frame, tv_sec, tv_usec, s);
break;
}
}
Bool
nouveau_dri2_init(ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
NVPtr pNv = NVPTR(pScrn);
DRI2InfoRec dri2 = { 0 };
if (pNv->Architecture >= NV_ARCH_30)
dri2.driverName = "nouveau";
else
dri2.driverName = "nouveau_vieux";
dri2.fd = nouveau_device(pNv->dev)->fd;
dri2.deviceName = pNv->drm_device_name;
dri2.version = DRI2INFOREC_VERSION;
dri2.CreateBuffer = nouveau_dri2_create_buffer;
dri2.DestroyBuffer = nouveau_dri2_destroy_buffer;
dri2.CopyRegion = nouveau_dri2_copy_region;
dri2.ScheduleSwap = nouveau_dri2_schedule_swap;
return DRI2ScreenInit(pScreen, &dri2);
}
void
nouveau_dri2_fini(ScreenPtr pScreen)
{
DRI2CloseScreen(pScreen);
}
#else
Bool
nouveau_dri2_init(ScreenPtr pScreen)
{
return TRUE;
}
void
nouveau_dri2_fini(ScreenPtr pScreen)
{
}
#endif
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