summaryrefslogtreecommitdiff
path: root/src/mesa/drivers/dri/i915tex/intel_batchpool.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa/drivers/dri/i915tex/intel_batchpool.c')
-rw-r--r--src/mesa/drivers/dri/i915tex/intel_batchpool.c418
1 files changed, 418 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i915tex/intel_batchpool.c b/src/mesa/drivers/dri/i915tex/intel_batchpool.c
new file mode 100644
index 0000000000..3c17c50204
--- /dev/null
+++ b/src/mesa/drivers/dri/i915tex/intel_batchpool.c
@@ -0,0 +1,418 @@
+/**************************************************************************
+ *
+ * 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, 0, &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;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 22:56:52 +0000