+++ /dev/null
-/**************************************************************************
- *
- * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- *
- **************************************************************************/
-/*
- * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
- */
-
-#include <xf86drm.h>
-#include <stdlib.h>
-#include <errno.h>
-#include "imports.h"
-#include "glthread.h"
-#include "dri_bufpool.h"
-#include "dri_bufmgr.h"
-#include "intel_screen.h"
-
-typedef struct
-{
- drmMMListHead head;
- struct _BPool *parent;
- struct _DriFenceObject *fence;
- unsigned long start;
- int unfenced;
- int mapped;
-} BBuf;
-
-typedef struct _BPool
-{
- _glthread_Mutex mutex;
- unsigned long bufSize;
- unsigned poolSize;
- unsigned numFree;
- unsigned numTot;
- unsigned numDelayed;
- unsigned checkDelayed;
- drmMMListHead free;
- drmMMListHead delayed;
- drmMMListHead head;
- drmBO kernelBO;
- void *virtual;
- BBuf *bufs;
-} BPool;
-
-
-static BPool *
-createBPool(int fd, unsigned long bufSize, unsigned numBufs, unsigned flags,
- unsigned checkDelayed)
-{
- BPool *p = (BPool *) malloc(sizeof(*p));
- BBuf *buf;
- int i;
-
- if (!p)
- return NULL;
-
- p->bufs = (BBuf *) malloc(numBufs * sizeof(*p->bufs));
- if (!p->bufs) {
- free(p);
- return NULL;
- }
-
- DRMINITLISTHEAD(&p->free);
- DRMINITLISTHEAD(&p->head);
- DRMINITLISTHEAD(&p->delayed);
-
- p->numTot = numBufs;
- p->numFree = numBufs;
- p->bufSize = bufSize;
- p->numDelayed = 0;
- p->checkDelayed = checkDelayed;
-
- _glthread_INIT_MUTEX(p->mutex);
-
- if (drmBOCreate(fd, 0, numBufs * bufSize, 0, NULL, drm_bo_type_dc,
- flags, DRM_BO_HINT_DONT_FENCE, &p->kernelBO)) {
- free(p->bufs);
- free(p);
- return NULL;
- }
- if (drmBOMap(fd, &p->kernelBO, DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE, 0,
- &p->virtual)) {
- drmBODestroy(fd, &p->kernelBO);
- free(p->bufs);
- free(p);
- return NULL;
- }
-
- /*
- * We unmap the buffer so that we can validate it later. Note that this is
- * just a synchronizing operation. The buffer will have a virtual mapping
- * until it is destroyed.
- */
-
- drmBOUnmap(fd, &p->kernelBO);
-
- buf = p->bufs;
- for (i = 0; i < numBufs; ++i) {
- buf->parent = p;
- buf->fence = NULL;
- buf->start = i * bufSize;
- buf->mapped = 0;
- buf->unfenced = 0;
- DRMLISTADDTAIL(&buf->head, &p->free);
- buf++;
- }
-
- return p;
-}
-
-
-static void
-pool_checkFree(BPool * p, int wait)
-{
- drmMMListHead *list, *prev;
- BBuf *buf;
- int signaled = 0;
- int i;
-
- list = p->delayed.next;
-
- if (p->numDelayed > 3) {
- for (i = 0; i < p->numDelayed; i += 3) {
- list = list->next;
- }
- }
-
- prev = list->prev;
- for (; list != &p->delayed; list = prev, prev = list->prev) {
-
- buf = DRMLISTENTRY(BBuf, list, head);
-
- if (!signaled) {
- if (wait) {
- driFenceFinish(buf->fence, DRM_FENCE_TYPE_EXE, 1);
- signaled = 1;
- }
- else {
- signaled = driFenceSignaled(buf->fence, DRM_FENCE_TYPE_EXE);
- }
- }
-
- if (!signaled)
- break;
-
- driFenceUnReference(buf->fence);
- buf->fence = NULL;
- DRMLISTDEL(list);
- p->numDelayed--;
- DRMLISTADD(list, &p->free);
- p->numFree++;
- }
-}
-
-static void *
-pool_create(struct _DriBufferPool *pool,
- unsigned long size, unsigned flags, unsigned hint,
- unsigned alignment)
-{
- BPool *p = (BPool *) pool->data;
-
- drmMMListHead *item;
-
- if (alignment && (alignment != 4096))
- return NULL;
-
- _glthread_LOCK_MUTEX(p->mutex);
-
- if (p->numFree == 0)
- pool_checkFree(p, GL_TRUE);
-
- if (p->numFree == 0) {
- fprintf(stderr, "Out of fixed size buffer objects\n");
- BM_CKFATAL(-ENOMEM);
- }
-
- item = p->free.next;
-
- if (item == &p->free) {
- fprintf(stderr, "Fixed size buffer pool corruption\n");
- }
-
- DRMLISTDEL(item);
- --p->numFree;
-
- _glthread_UNLOCK_MUTEX(p->mutex);
- return (void *) DRMLISTENTRY(BBuf, item, head);
-}
-
-
-static int
-pool_destroy(struct _DriBufferPool *pool, void *private)
-{
- BBuf *buf = (BBuf *) private;
- BPool *p = buf->parent;
-
- _glthread_LOCK_MUTEX(p->mutex);
-
- if (buf->fence) {
- DRMLISTADDTAIL(&buf->head, &p->delayed);
- p->numDelayed++;
- }
- else {
- buf->unfenced = 0;
- DRMLISTADD(&buf->head, &p->free);
- p->numFree++;
- }
-
- if ((p->numDelayed % p->checkDelayed) == 0)
- pool_checkFree(p, 0);
-
- _glthread_UNLOCK_MUTEX(p->mutex);
- return 0;
-}
-
-
-static int
-pool_map(struct _DriBufferPool *pool, void *private, unsigned flags,
- int hint, void **virtual)
-{
-
- BBuf *buf = (BBuf *) private;
- BPool *p = buf->parent;
-
- _glthread_LOCK_MUTEX(p->mutex);
-
- /*
- * Currently Mesa doesn't have any condition variables to resolve this
- * cleanly in a multithreading environment.
- * We bail out instead.
- */
-
- if (buf->mapped) {
- fprintf(stderr, "Trying to map already mapped buffer object\n");
- BM_CKFATAL(-EINVAL);
- }
-
-#if 0
- if (buf->unfenced && !(hint & DRM_BO_HINT_ALLOW_UNFENCED_MAP)) {
- fprintf(stderr, "Trying to map an unfenced buffer object 0x%08x"
- " 0x%08x %d\n", hint, flags, buf->start);
- BM_CKFATAL(-EINVAL);
- }
-
-#endif
-
- if (buf->fence) {
- _glthread_UNLOCK_MUTEX(p->mutex);
- return -EBUSY;
- }
-
- buf->mapped = GL_TRUE;
- *virtual = (unsigned char *) p->virtual + buf->start;
- _glthread_UNLOCK_MUTEX(p->mutex);
- return 0;
-}
-
-static int
-pool_waitIdle(struct _DriBufferPool *pool, void *private, int lazy)
-{
- BBuf *buf = (BBuf *) private;
- driFenceFinish(buf->fence, 0, lazy);
- return 0;
-}
-
-static int
-pool_unmap(struct _DriBufferPool *pool, void *private)
-{
- BBuf *buf = (BBuf *) private;
-
- buf->mapped = 0;
- return 0;
-}
-
-static unsigned long
-pool_offset(struct _DriBufferPool *pool, void *private)
-{
- BBuf *buf = (BBuf *) private;
- BPool *p = buf->parent;
-
- return p->kernelBO.offset + buf->start;
-}
-
-static unsigned
-pool_flags(struct _DriBufferPool *pool, void *private)
-{
- BPool *p = (BPool *) pool->data;
-
- return p->kernelBO.flags;
-}
-
-static unsigned long
-pool_size(struct _DriBufferPool *pool, void *private)
-{
- BPool *p = (BPool *) pool->data;
-
- return p->bufSize;
-}
-
-
-static int
-pool_fence(struct _DriBufferPool *pool, void *private,
- struct _DriFenceObject *fence)
-{
- BBuf *buf = (BBuf *) private;
- BPool *p = buf->parent;
-
- _glthread_LOCK_MUTEX(p->mutex);
- if (buf->fence) {
- driFenceUnReference(buf->fence);
- }
- buf->fence = fence;
- buf->unfenced = 0;
- driFenceReference(buf->fence);
- _glthread_UNLOCK_MUTEX(p->mutex);
-
- return 0;
-}
-
-static drmBO *
-pool_kernel(struct _DriBufferPool *pool, void *private)
-{
- BBuf *buf = (BBuf *) private;
- BPool *p = buf->parent;
-
- return &p->kernelBO;
-}
-
-static int
-pool_validate(struct _DriBufferPool *pool, void *private)
-{
- BBuf *buf = (BBuf *) private;
- BPool *p = buf->parent;
- _glthread_LOCK_MUTEX(p->mutex);
- buf->unfenced = GL_TRUE;
- _glthread_UNLOCK_MUTEX(p->mutex);
- return 0;
-}
-
-static void
-pool_takedown(struct _DriBufferPool *pool)
-{
- BPool *p = (BPool *) pool->data;
-
- /*
- * Wait on outstanding fences.
- */
-
- _glthread_LOCK_MUTEX(p->mutex);
- while ((p->numFree < p->numTot) && p->numDelayed) {
- _glthread_UNLOCK_MUTEX(p->mutex);
- sched_yield();
- pool_checkFree(p, GL_TRUE);
- _glthread_LOCK_MUTEX(p->mutex);
- }
-
- drmBODestroy(pool->fd, &p->kernelBO);
- free(p->bufs);
- _glthread_UNLOCK_MUTEX(p->mutex);
- free(p);
- free(pool);
-}
-
-
-struct _DriBufferPool *
-driBatchPoolInit(int fd, unsigned flags,
- unsigned long bufSize,
- unsigned numBufs, unsigned checkDelayed)
-{
- struct _DriBufferPool *pool;
-
- pool = (struct _DriBufferPool *) malloc(sizeof(*pool));
- if (!pool)
- return NULL;
-
- pool->data = createBPool(fd, bufSize, numBufs, flags, checkDelayed);
- if (!pool->data)
- return NULL;
-
- pool->fd = fd;
- pool->map = &pool_map;
- pool->unmap = &pool_unmap;
- pool->destroy = &pool_destroy;
- pool->offset = &pool_offset;
- pool->flags = &pool_flags;
- pool->size = &pool_size;
- pool->create = &pool_create;
- pool->fence = &pool_fence;
- pool->kernel = &pool_kernel;
- pool->validate = &pool_validate;
- pool->waitIdle = &pool_waitIdle;
- pool->setstatic = NULL;
- pool->takeDown = &pool_takedown;
- return pool;
-}
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