diff options
Diffstat (limited to 'xorg-server/hw/xfree86/dri2/dri2.c')
| -rw-r--r-- | xorg-server/hw/xfree86/dri2/dri2.c | 493 |
1 files changed, 493 insertions, 0 deletions
diff --git a/xorg-server/hw/xfree86/dri2/dri2.c b/xorg-server/hw/xfree86/dri2/dri2.c new file mode 100644 index 000000000..74aef7196 --- /dev/null +++ b/xorg-server/hw/xfree86/dri2/dri2.c @@ -0,0 +1,493 @@ +/* + * Copyright © 2007 Red Hat, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Soft- + * ware"), to deal in the Software without restriction, including without + * limitation the rights to use, copy, modify, merge, publish, distribute, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, provided that the above copyright + * notice(s) and this permission notice appear in all copies of the Soft- + * ware and that both the above copyright notice(s) and this permission + * notice appear in supporting documentation. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL- + * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY + * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN + * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE- + * QUENTIAL 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 PERFOR- + * MANCE OF THIS SOFTWARE. + * + * Except as contained in this notice, the name of a copyright holder shall + * not be used in advertising or otherwise to promote the sale, use or + * other dealings in this Software without prior written authorization of + * the copyright holder. + * + * Authors: + * Kristian Høgsberg (krh@redhat.com) + */ + +#ifdef HAVE_XORG_CONFIG_H +#include <xorg-config.h> +#endif + +#include <xf86drm.h> +#include "xf86Module.h" +#include "scrnintstr.h" +#include "windowstr.h" +#include "region.h" +#include "damage.h" +#include "dri2.h" +#include <GL/internal/dri_sarea.h> + +#include "xf86.h" + +static DevPrivateKey dri2ScreenPrivateKey = &dri2ScreenPrivateKey; +static DevPrivateKey dri2WindowPrivateKey = &dri2WindowPrivateKey; +static DevPrivateKey dri2PixmapPrivateKey = &dri2PixmapPrivateKey; + +typedef struct _DRI2DrawablePriv { + unsigned int refCount; + unsigned int boHandle; + unsigned int dri2Handle; +} DRI2DrawablePrivRec, *DRI2DrawablePrivPtr; + +typedef struct _DRI2Screen { + int fd; + drmBO sareaBO; + void *sarea; + unsigned int sareaSize; + const char *driverName; + unsigned int nextHandle; + + __DRIEventBuffer *buffer; + int locked; + + DRI2GetPixmapHandleProcPtr getPixmapHandle; + DRI2BeginClipNotifyProcPtr beginClipNotify; + DRI2EndClipNotifyProcPtr endClipNotify; + + ClipNotifyProcPtr ClipNotify; + HandleExposuresProcPtr HandleExposures; +} DRI2ScreenRec, *DRI2ScreenPtr; + +static DRI2ScreenPtr +DRI2GetScreen(ScreenPtr pScreen) +{ + return dixLookupPrivate(&pScreen->devPrivates, dri2ScreenPrivateKey); +} + +static void * +DRI2ScreenAllocEvent(DRI2ScreenPtr ds, size_t size) +{ + unsigned int *pad, mask = ds->buffer->size - 1; + size_t pad_size; + void *p; + + if ((ds->buffer->head & mask) + size > ds->buffer->size) { + /* The requested event size would wrap the buffer, so pad to + * the end and allocate the event from the start. */ + pad_size = ds->buffer->size - (ds->buffer->head & mask); + pad = (unsigned int *) + (ds->buffer->data + (ds->buffer->prealloc & mask)); + *pad = DRI2_EVENT_HEADER(DRI2_EVENT_PAD, pad_size); + ds->buffer->prealloc += pad_size; + } + + p = ds->buffer->data + (ds->buffer->prealloc & mask); + ds->buffer->prealloc += size; + + return p; +} + +static void +DRI2ScreenCommitEvents(DRI2ScreenPtr ds) +{ + ds->buffer->head = ds->buffer->prealloc; +} + +static void +DRI2PostDrawableConfig(DrawablePtr pDraw) +{ + ScreenPtr pScreen = pDraw->pScreen; + DRI2ScreenPtr ds = DRI2GetScreen(pScreen); + DRI2DrawablePrivPtr pPriv; + WindowPtr pWin; + PixmapPtr pPixmap; + BoxPtr pBox; + BoxRec pixmapBox; + int nBox; + int i; + __DRIDrawableConfigEvent *e; + size_t size; + + if (pDraw->type == DRAWABLE_WINDOW) { + pWin = (WindowPtr) pDraw; + pPriv = dixLookupPrivate(&pWin->devPrivates, dri2WindowPrivateKey); + + nBox = REGION_NUM_RECTS(&pWin->clipList); + pBox = REGION_RECTS(&pWin->clipList); + + pPixmap = pScreen->GetWindowPixmap(pWin); + } else { + pPixmap = (PixmapPtr) pDraw; + pPriv = dixLookupPrivate(&pPixmap->devPrivates, dri2PixmapPrivateKey); + + pixmapBox.x1 = 0; + pixmapBox.y1 = 0; + pixmapBox.x2 = pDraw->width; + pixmapBox.y2 = pDraw->height; + nBox = 1; + pBox = &pixmapBox; + } + + if (!pPriv) + return; + + size = sizeof *e + nBox * sizeof e->rects[0]; + + e = DRI2ScreenAllocEvent(ds, size); + e->event_header = DRI2_EVENT_HEADER(DRI2_EVENT_DRAWABLE_CONFIG, size); + e->drawable = pPriv->dri2Handle; + e->x = pDraw->x - pPixmap->screen_x; + e->y = pDraw->y - pPixmap->screen_y; + e->width = pDraw->width; + e->height = pDraw->height; + + e->num_rects = nBox; + for (i = 0; i < nBox; i++) { + e->rects[i].x1 = pBox->x1 - pPixmap->screen_x; + e->rects[i].y1 = pBox->y1 - pPixmap->screen_y; + e->rects[i].x2 = pBox->x2 - pPixmap->screen_x; + e->rects[i].y2 = pBox->y2 - pPixmap->screen_y; + pBox++; + } +} + +static void +DRI2PostBufferAttach(DrawablePtr pDraw, Bool force) +{ + ScreenPtr pScreen = pDraw->pScreen; + DRI2ScreenPtr ds = DRI2GetScreen(pScreen); + DRI2DrawablePrivPtr pPriv; + WindowPtr pWin; + PixmapPtr pPixmap; + __DRIBufferAttachEvent *e; + size_t size; + unsigned int flags; + unsigned int boHandle; + + if (pDraw->type == DRAWABLE_WINDOW) { + pWin = (WindowPtr) pDraw; + pPixmap = pScreen->GetWindowPixmap(pWin); + pPriv = dixLookupPrivate(&pWin->devPrivates, dri2WindowPrivateKey); + } else { + pPixmap = (PixmapPtr) pDraw; + pPriv = dixLookupPrivate(&pPixmap->devPrivates, dri2PixmapPrivateKey); + } + + if (!pPriv) + return; + + boHandle = ds->getPixmapHandle(pPixmap, &flags); + if (boHandle == pPriv->boHandle && !force) + return; + + pPriv->boHandle = boHandle; + size = sizeof *e; + e = DRI2ScreenAllocEvent(ds, size); + e->event_header = DRI2_EVENT_HEADER(DRI2_EVENT_BUFFER_ATTACH, size); + e->drawable = pPriv->dri2Handle; + e->buffer.attachment = DRI_DRAWABLE_BUFFER_FRONT_LEFT; + e->buffer.handle = pPriv->boHandle; + e->buffer.pitch = pPixmap->devKind; + e->buffer.cpp = pPixmap->drawable.bitsPerPixel / 8; + e->buffer.flags = flags; +} + +static void +DRI2ClipNotify(WindowPtr pWin, int dx, int dy) +{ + ScreenPtr pScreen = pWin->drawable.pScreen; + DRI2ScreenPtr ds = DRI2GetScreen(pScreen); + + if (!ds->locked) { + ds->beginClipNotify(pScreen); + ds->locked = 1; + } + + if (ds->ClipNotify) { + pScreen->ClipNotify = ds->ClipNotify; + pScreen->ClipNotify(pWin, dx, dy); + pScreen->ClipNotify = DRI2ClipNotify; + } + + DRI2PostDrawableConfig(&pWin->drawable); + DRI2PostBufferAttach(&pWin->drawable, FALSE); +} + +static void +DRI2HandleExposures(WindowPtr pWin) +{ + ScreenPtr pScreen = pWin->drawable.pScreen; + DRI2ScreenPtr ds = DRI2GetScreen(pScreen); + + if (ds->HandleExposures) { + pScreen->HandleExposures = ds->HandleExposures; + pScreen->HandleExposures(pWin); + pScreen->HandleExposures = DRI2HandleExposures; + } + + DRI2ScreenCommitEvents(ds); + + if (ds->locked) { + ds->endClipNotify(pScreen); + ds->locked = 0; + } +} + +void +DRI2CloseScreen(ScreenPtr pScreen) +{ + DRI2ScreenPtr ds = DRI2GetScreen(pScreen); + + pScreen->ClipNotify = ds->ClipNotify; + pScreen->HandleExposures = ds->HandleExposures; + + drmBOUnmap(ds->fd, &ds->sareaBO); + drmBOUnreference(ds->fd, &ds->sareaBO); + + xfree(ds); + dixSetPrivate(&pScreen->devPrivates, dri2ScreenPrivateKey, NULL); +} + +Bool +DRI2CreateDrawable(DrawablePtr pDraw, + unsigned int *handle, unsigned int *head) +{ + DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen); + WindowPtr pWin; + PixmapPtr pPixmap; + DRI2DrawablePrivPtr pPriv; + DevPrivateKey key; + PrivateRec **devPrivates; + + if (pDraw->type == DRAWABLE_WINDOW) { + pWin = (WindowPtr) pDraw; + devPrivates = &pWin->devPrivates; + key = dri2WindowPrivateKey; + } else { + pPixmap = (PixmapPtr) pDraw; + devPrivates = &pPixmap->devPrivates; + key = dri2PixmapPrivateKey; + } + + pPriv = dixLookupPrivate(devPrivates, key); + if (pPriv != NULL) { + pPriv->refCount++; + } else { + pPriv = xalloc(sizeof *pPriv); + pPriv->refCount = 1; + pPriv->boHandle = 0; + pPriv->dri2Handle = ds->nextHandle++; + dixSetPrivate(devPrivates, key, pPriv); + } + + *handle = pPriv->dri2Handle; + *head = ds->buffer->head; + + DRI2PostDrawableConfig(pDraw); + DRI2PostBufferAttach(pDraw, TRUE); + DRI2ScreenCommitEvents(ds); + + return TRUE; +} + +void +DRI2DestroyDrawable(DrawablePtr pDraw) +{ + PixmapPtr pPixmap; + WindowPtr pWin; + DRI2DrawablePrivPtr pPriv; + DevPrivateKey key; + PrivateRec **devPrivates; + + if (pDraw->type == DRAWABLE_WINDOW) { + pWin = (WindowPtr) pDraw; + devPrivates = &pWin->devPrivates; + key = dri2WindowPrivateKey; + } else { + pPixmap = (PixmapPtr) pDraw; + devPrivates = &pPixmap->devPrivates; + key = dri2PixmapPrivateKey; + } + + pPriv = dixLookupPrivate(devPrivates, key); + if (pPriv == NULL) + return; + + pPriv->refCount--; + if (pPriv->refCount == 0) { + dixSetPrivate(devPrivates, key, NULL); + xfree(pPriv); + } +} + +void +DRI2ReemitDrawableInfo(DrawablePtr pDraw, unsigned int *head) +{ + DRI2ScreenPtr ds = DRI2GetScreen(pDraw->pScreen); + + *head = ds->buffer->head; + + DRI2PostDrawableConfig(pDraw); + DRI2PostBufferAttach(pDraw, TRUE); + DRI2ScreenCommitEvents(ds); +} + +Bool +DRI2Connect(ScreenPtr pScreen, int *fd, const char **driverName, + unsigned int *sareaHandle) +{ + DRI2ScreenPtr ds = DRI2GetScreen(pScreen); + + if (ds == NULL) + return FALSE; + + *fd = ds->fd; + *driverName = ds->driverName; + *sareaHandle = ds->sareaBO.handle; + + return TRUE; +} + +Bool +DRI2AuthConnection(ScreenPtr pScreen, drm_magic_t magic) +{ + DRI2ScreenPtr ds = DRI2GetScreen(pScreen); + + if (ds == NULL || drmAuthMagic(ds->fd, magic)) + return FALSE; + + return TRUE; +} + +unsigned int +DRI2GetPixmapHandle(PixmapPtr pPixmap, unsigned int *flags) +{ + DRI2ScreenPtr ds = DRI2GetScreen(pPixmap->drawable.pScreen); + + return ds->getPixmapHandle(pPixmap, flags); +} + +static void * +DRI2SetupSAREA(ScreenPtr pScreen, size_t driverSareaSize) +{ + DRI2ScreenPtr ds = DRI2GetScreen(pScreen); + unsigned long mask; + const size_t event_buffer_size = 32 * 1024; + + ds->sareaSize = + sizeof(*ds->buffer) + event_buffer_size + + driverSareaSize + + sizeof (unsigned int); + + mask = DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE | DRM_BO_FLAG_MAPPABLE | + DRM_BO_FLAG_MEM_LOCAL | DRM_BO_FLAG_SHAREABLE; + + if (drmBOCreate(ds->fd, ds->sareaSize, 1, NULL, mask, 0, &ds->sareaBO)) + return NULL; + + if (drmBOMap(ds->fd, &ds->sareaBO, + DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE, 0, &ds->sarea)) { + drmBOUnreference(ds->fd, &ds->sareaBO); + return NULL; + } + + xf86DrvMsg(pScreen->myNum, X_INFO, + "[DRI2] Allocated %d byte SAREA, BO handle 0x%08x\n", + ds->sareaSize, ds->sareaBO.handle); + memset(ds->sarea, 0, ds->sareaSize); + + ds->buffer = ds->sarea; + ds->buffer->block_header = + DRI2_SAREA_BLOCK_HEADER(DRI2_SAREA_BLOCK_EVENT_BUFFER, + sizeof *ds->buffer + event_buffer_size); + ds->buffer->size = event_buffer_size; + + return DRI2_SAREA_BLOCK_NEXT(ds->buffer); +} + +void * +DRI2ScreenInit(ScreenPtr pScreen, DRI2InfoPtr info) +{ + DRI2ScreenPtr ds; + void *p; + + ds = xalloc(sizeof *ds); + if (!ds) + return NULL; + + ds->fd = info->fd; + ds->driverName = info->driverName; + ds->nextHandle = 1; + + ds->getPixmapHandle = info->getPixmapHandle; + ds->beginClipNotify = info->beginClipNotify; + ds->endClipNotify = info->endClipNotify; + + ds->ClipNotify = pScreen->ClipNotify; + pScreen->ClipNotify = DRI2ClipNotify; + ds->HandleExposures = pScreen->HandleExposures; + pScreen->HandleExposures = DRI2HandleExposures; + + dixSetPrivate(&pScreen->devPrivates, dri2ScreenPrivateKey, ds); + + p = DRI2SetupSAREA(pScreen, info->driverSareaSize); + if (p == NULL) { + xfree(ds); + return NULL; + } + + xf86DrvMsg(pScreen->myNum, X_INFO, "[DRI2] Setup complete\n"); + + return p; +} + +extern ExtensionModule dri2ExtensionModule; + +static pointer +DRI2Setup(pointer module, pointer opts, int *errmaj, int *errmin) +{ + static Bool setupDone = FALSE; + + if (!setupDone) { + setupDone = TRUE; + LoadExtension(&dri2ExtensionModule, FALSE); + } else { + if (errmaj) + *errmaj = LDR_ONCEONLY; + } + + return (pointer) 1; +} + +static XF86ModuleVersionInfo DRI2VersRec = +{ + "dri2", + MODULEVENDORSTRING, + MODINFOSTRING1, + MODINFOSTRING2, + XORG_VERSION_CURRENT, + 1, 0, 0, + ABI_CLASS_EXTENSION, + ABI_EXTENSION_VERSION, + MOD_CLASS_NONE, + { 0, 0, 0, 0 } +}; + +_X_EXPORT XF86ModuleData dri2ModuleData = { &DRI2VersRec, DRI2Setup, NULL }; + |