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path: root/src/gallium/winsys/drm/intel/common/ws_dri_fencemgr.c
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Diffstat (limited to 'src/gallium/winsys/drm/intel/common/ws_dri_fencemgr.c')
-rw-r--r--src/gallium/winsys/drm/intel/common/ws_dri_fencemgr.c377
1 files changed, 0 insertions, 377 deletions
diff --git a/src/gallium/winsys/drm/intel/common/ws_dri_fencemgr.c b/src/gallium/winsys/drm/intel/common/ws_dri_fencemgr.c
deleted file mode 100644
index 831c75d30cc..00000000000
--- a/src/gallium/winsys/drm/intel/common/ws_dri_fencemgr.c
+++ /dev/null
@@ -1,377 +0,0 @@
-#include "ws_dri_fencemgr.h"
-#include "pipe/p_thread.h"
-#include <xf86mm.h>
-#include <string.h>
-#include <unistd.h>
-
-/*
- * Note: Locking order is
- * _DriFenceObject::mutex
- * _DriFenceMgr::mutex
- */
-
-struct _DriFenceMgr {
- /*
- * Constant members. Need no mutex protection.
- */
- struct _DriFenceMgrCreateInfo info;
- void *private;
-
- /*
- * These members are protected by this->mutex
- */
- pipe_mutex mutex;
- int refCount;
- drmMMListHead *heads;
- int num_fences;
-};
-
-struct _DriFenceObject {
-
- /*
- * These members are constant and need no mutex protection.
- */
- struct _DriFenceMgr *mgr;
- uint32_t fence_class;
- uint32_t fence_type;
-
- /*
- * These members are protected by mgr->mutex.
- */
- drmMMListHead head;
- int refCount;
-
- /*
- * These members are protected by this->mutex.
- */
- pipe_mutex mutex;
- uint32_t signaled_type;
- void *private;
-};
-
-uint32_t
-driFenceType(struct _DriFenceObject *fence)
-{
- return fence->fence_type;
-}
-
-struct _DriFenceMgr *
-driFenceMgrCreate(const struct _DriFenceMgrCreateInfo *info)
-{
- struct _DriFenceMgr *tmp;
- uint32_t i;
-
- tmp = calloc(1, sizeof(*tmp));
- if (!tmp)
- return NULL;
-
- pipe_mutex_init(tmp->mutex);
- pipe_mutex_lock(tmp->mutex);
- tmp->refCount = 1;
- tmp->info = *info;
- tmp->num_fences = 0;
- tmp->heads = calloc(tmp->info.num_classes, sizeof(*tmp->heads));
- if (!tmp->heads)
- goto out_err;
-
- for (i=0; i<tmp->info.num_classes; ++i) {
- DRMINITLISTHEAD(&tmp->heads[i]);
- }
- pipe_mutex_unlock(tmp->mutex);
- return tmp;
-
- out_err:
- if (tmp)
- free(tmp);
- return NULL;
-}
-
-static void
-driFenceMgrUnrefUnlock(struct _DriFenceMgr **pMgr)
-{
- struct _DriFenceMgr *mgr = *pMgr;
-
- *pMgr = NULL;
- if (--mgr->refCount == 0)
- free(mgr);
- else
- pipe_mutex_unlock(mgr->mutex);
-}
-
-void
-driFenceMgrUnReference(struct _DriFenceMgr **pMgr)
-{
- pipe_mutex_lock((*pMgr)->mutex);
- driFenceMgrUnrefUnlock(pMgr);
-}
-
-static void
-driFenceUnReferenceLocked(struct _DriFenceObject **pFence)
-{
- struct _DriFenceObject *fence = *pFence;
- struct _DriFenceMgr *mgr = fence->mgr;
-
- *pFence = NULL;
- if (--fence->refCount == 0) {
- DRMLISTDELINIT(&fence->head);
- if (fence->private)
- mgr->info.unreference(mgr, &fence->private);
- --mgr->num_fences;
- fence->mgr = NULL;
- --mgr->refCount;
- free(fence);
-
- }
-}
-
-
-static void
-driSignalPreviousFencesLocked(struct _DriFenceMgr *mgr,
- drmMMListHead *list,
- uint32_t fence_class,
- uint32_t fence_type)
-{
- struct _DriFenceObject *entry;
- drmMMListHead *prev;
-
- while(list != &mgr->heads[fence_class]) {
- entry = DRMLISTENTRY(struct _DriFenceObject, list, head);
-
- /*
- * Up refcount so that entry doesn't disappear from under us
- * when we unlock-relock mgr to get the correct locking order.
- */
-
- ++entry->refCount;
- pipe_mutex_unlock(mgr->mutex);
- pipe_mutex_lock(entry->mutex);
- pipe_mutex_lock(mgr->mutex);
-
- prev = list->prev;
-
-
-
- if (list->prev == list) {
-
- /*
- * Somebody else removed the entry from the list.
- */
-
- pipe_mutex_unlock(entry->mutex);
- driFenceUnReferenceLocked(&entry);
- return;
- }
-
- entry->signaled_type |= (fence_type & entry->fence_type);
- if (entry->signaled_type == entry->fence_type) {
- DRMLISTDELINIT(list);
- mgr->info.unreference(mgr, &entry->private);
- }
- pipe_mutex_unlock(entry->mutex);
- driFenceUnReferenceLocked(&entry);
- list = prev;
- }
-}
-
-
-int
-driFenceFinish(struct _DriFenceObject *fence, uint32_t fence_type,
- int lazy_hint)
-{
- struct _DriFenceMgr *mgr = fence->mgr;
- int ret = 0;
-
- pipe_mutex_lock(fence->mutex);
-
- if ((fence->signaled_type & fence_type) == fence_type)
- goto out0;
-
- ret = mgr->info.finish(mgr, fence->private, fence_type, lazy_hint);
- if (ret)
- goto out0;
-
- pipe_mutex_lock(mgr->mutex);
- pipe_mutex_unlock(fence->mutex);
-
- driSignalPreviousFencesLocked(mgr, &fence->head, fence->fence_class,
- fence_type);
- pipe_mutex_unlock(mgr->mutex);
- return 0;
-
- out0:
- pipe_mutex_unlock(fence->mutex);
- return ret;
-}
-
-uint32_t driFenceSignaledTypeCached(struct _DriFenceObject *fence)
-{
- uint32_t ret;
-
- pipe_mutex_lock(fence->mutex);
- ret = fence->signaled_type;
- pipe_mutex_unlock(fence->mutex);
-
- return ret;
-}
-
-int
-driFenceSignaledType(struct _DriFenceObject *fence, uint32_t flush_type,
- uint32_t *signaled)
-{
- int ret = 0;
- struct _DriFenceMgr *mgr;
-
- pipe_mutex_lock(fence->mutex);
- mgr = fence->mgr;
- *signaled = fence->signaled_type;
- if ((fence->signaled_type & flush_type) == flush_type)
- goto out0;
-
- ret = mgr->info.signaled(mgr, fence->private, flush_type, signaled);
- if (ret) {
- *signaled = fence->signaled_type;
- goto out0;
- }
-
- if ((fence->signaled_type | *signaled) == fence->signaled_type)
- goto out0;
-
- pipe_mutex_lock(mgr->mutex);
- pipe_mutex_unlock(fence->mutex);
-
- driSignalPreviousFencesLocked(mgr, &fence->head, fence->fence_class,
- *signaled);
-
- pipe_mutex_unlock(mgr->mutex);
- return 0;
- out0:
- pipe_mutex_unlock(fence->mutex);
- return ret;
-}
-
-struct _DriFenceObject *
-driFenceReference(struct _DriFenceObject *fence)
-{
- pipe_mutex_lock(fence->mgr->mutex);
- ++fence->refCount;
- pipe_mutex_unlock(fence->mgr->mutex);
- return fence;
-}
-
-void
-driFenceUnReference(struct _DriFenceObject **pFence)
-{
- struct _DriFenceMgr *mgr;
-
- if (*pFence == NULL)
- return;
-
- mgr = (*pFence)->mgr;
- pipe_mutex_lock(mgr->mutex);
- ++mgr->refCount;
- driFenceUnReferenceLocked(pFence);
- driFenceMgrUnrefUnlock(&mgr);
-}
-
-struct _DriFenceObject
-*driFenceCreate(struct _DriFenceMgr *mgr, uint32_t fence_class,
- uint32_t fence_type, void *private, size_t private_size)
-{
- struct _DriFenceObject *fence;
- size_t fence_size = sizeof(*fence);
-
- if (private_size)
- fence_size = ((fence_size + 15) & ~15);
-
- fence = calloc(1, fence_size + private_size);
-
- if (!fence) {
- int ret = mgr->info.finish(mgr, private, fence_type, 0);
-
- if (ret)
- usleep(10000000);
-
- return NULL;
- }
-
- pipe_mutex_init(fence->mutex);
- pipe_mutex_lock(fence->mutex);
- pipe_mutex_lock(mgr->mutex);
- fence->refCount = 1;
- DRMLISTADDTAIL(&fence->head, &mgr->heads[fence_class]);
- fence->mgr = mgr;
- ++mgr->refCount;
- ++mgr->num_fences;
- pipe_mutex_unlock(mgr->mutex);
- fence->fence_class = fence_class;
- fence->fence_type = fence_type;
- fence->signaled_type = 0;
- fence->private = private;
- if (private_size) {
- fence->private = (void *)(((uint8_t *) fence) + fence_size);
- memcpy(fence->private, private, private_size);
- }
-
- pipe_mutex_unlock(fence->mutex);
- return fence;
-}
-
-
-static int
-tSignaled(struct _DriFenceMgr *mgr, void *private, uint32_t flush_type,
- uint32_t *signaled_type)
-{
- long fd = (long) mgr->private;
- int dummy;
- drmFence *fence = (drmFence *) private;
- int ret;
-
- *signaled_type = 0;
- ret = drmFenceSignaled((int) fd, fence, flush_type, &dummy);
- if (ret)
- return ret;
-
- *signaled_type = fence->signaled;
-
- return 0;
-}
-
-static int
-tFinish(struct _DriFenceMgr *mgr, void *private, uint32_t fence_type,
- int lazy_hint)
-{
- long fd = (long) mgr->private;
- unsigned flags = lazy_hint ? DRM_FENCE_FLAG_WAIT_LAZY : 0;
-
- return drmFenceWait((int)fd, flags, (drmFence *) private, fence_type);
-}
-
-static int
-tUnref(struct _DriFenceMgr *mgr, void **private)
-{
- long fd = (long) mgr->private;
- drmFence *fence = (drmFence *) *private;
- *private = NULL;
-
- return drmFenceUnreference(fd, fence);
-}
-
-struct _DriFenceMgr *driFenceMgrTTMInit(int fd)
-{
- struct _DriFenceMgrCreateInfo info;
- struct _DriFenceMgr *mgr;
-
- info.flags = DRI_FENCE_CLASS_ORDERED;
- info.num_classes = 4;
- info.signaled = tSignaled;
- info.finish = tFinish;
- info.unreference = tUnref;
-
- mgr = driFenceMgrCreate(&info);
- if (mgr == NULL)
- return NULL;
-
- mgr->private = (void *) (long) fd;
- return mgr;
-}
-
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