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authorEric Anholt <anholt@freebsd.org>2003-04-24 06:19:54 +0000
committerEric Anholt <anholt@freebsd.org>2003-04-24 06:19:54 +0000
commit01178567ebc428fcf8eb53a62b5ca9c449980491 (patch)
treea43c915a8e287d0eb44cab14562417b9950dd9cd /bsd/drm_lists.h
parentc6d2af70cb30a5cc65aebae2637313158a95346e (diff)
Remove more gamma DMA code. This isn't all of it, but it's a major portion.
Diffstat (limited to 'bsd/drm_lists.h')
-rw-r--r--bsd/drm_lists.h235
1 files changed, 0 insertions, 235 deletions
diff --git a/bsd/drm_lists.h b/bsd/drm_lists.h
deleted file mode 100644
index caac72cc..00000000
--- a/bsd/drm_lists.h
+++ /dev/null
@@ -1,235 +0,0 @@
-/* drm_lists.h -- Buffer list handling routines -*- linux-c -*-
- * Created: Mon Apr 19 20:54:22 1999 by faith@valinux.com
- *
- * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
- * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
- * 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, sublicense,
- * 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 above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * 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 NONINFRINGEMENT. IN NO EVENT SHALL
- * VA LINUX SYSTEMS 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.
- *
- * Authors:
- * Rickard E. (Rik) Faith <faith@valinux.com>
- * Gareth Hughes <gareth@valinux.com>
- *
- * $FreeBSD: src/sys/dev/drm/drm_lists.h,v 1.3 2003/03/09 02:08:28 anholt Exp $
- */
-
-#include "drmP.h"
-
-#if __HAVE_DMA_WAITLIST
-
-int DRM(waitlist_create)(drm_waitlist_t *bl, int count)
-{
- if (bl->count)
- return DRM_ERR( EINVAL );
-
- bl->bufs = DRM(alloc)((bl->count + 2) * sizeof(*bl->bufs),
- DRM_MEM_BUFLISTS);
-
- if(!bl->bufs) return DRM_ERR(ENOMEM);
-
- bzero(bl->bufs, sizeof(*bl->bufs));
-
- bl->count = count;
- bl->rp = bl->bufs;
- bl->wp = bl->bufs;
- bl->end = &bl->bufs[bl->count+1];
- DRM_SPININIT( bl->write_lock, "writelock" );
- DRM_SPININIT( bl->read_lock, "readlock" );
- return 0;
-}
-
-int DRM(waitlist_destroy)(drm_waitlist_t *bl)
-{
- if (bl->rp != bl->wp)
- return DRM_ERR( EINVAL );
- if (bl->bufs) DRM(free)(bl->bufs,
- (bl->count + 2) * sizeof(*bl->bufs),
- DRM_MEM_BUFLISTS);
- bl->count = 0;
- bl->bufs = NULL;
- bl->rp = NULL;
- bl->wp = NULL;
- bl->end = NULL;
- DRM_SPINUNINIT( bl->write_lock );
- DRM_SPINUNINIT( bl->read_lock );
- return 0;
-}
-
-int DRM(waitlist_put)(drm_waitlist_t *bl, drm_buf_t *buf)
-{
- int left;
- int s;
- left = DRM_LEFTCOUNT(bl);
- if (!left) {
- DRM_ERROR("Overflow while adding buffer %d from pid %d\n",
- buf->idx, buf->pid);
- return DRM_ERR( EINVAL );
- }
- buf->list = DRM_LIST_WAIT;
-
- DRM_SPINLOCK(&bl->write_lock);
- s = spldrm();
- *bl->wp = buf;
- if (++bl->wp >= bl->end) bl->wp = bl->bufs;
- splx(s);
- DRM_SPINUNLOCK(&bl->write_lock);
-
- return 0;
-}
-
-drm_buf_t *DRM(waitlist_get)(drm_waitlist_t *bl)
-{
- drm_buf_t *buf;
- int s;
-
- DRM_SPINLOCK(&bl->read_lock);
- s = spldrm();
- buf = *bl->rp;
- if (bl->rp == bl->wp) {
- splx(s);
- DRM_SPINUNLOCK(&bl->read_lock);
- return NULL;
- }
- if (++bl->rp >= bl->end) bl->rp = bl->bufs;
- splx(s);
- DRM_SPINUNLOCK(&bl->read_lock);
-
- return buf;
-}
-
-#endif /* __HAVE_DMA_WAITLIST */
-
-
-#if __HAVE_DMA_FREELIST
-
-int DRM(freelist_create)(drm_freelist_t *bl, int count)
-{
- atomic_set(&bl->count, 0);
- bl->next = NULL;
- bl->waiting = 0;
-
- bl->low_mark = 0;
- bl->high_mark = 0;
- atomic_set(&bl->wfh, 0);
- DRM_SPININIT( bl->lock, "freelistlock" );
- ++bl->initialized;
- return 0;
-}
-
-int DRM(freelist_destroy)(drm_freelist_t *bl)
-{
- atomic_set(&bl->count, 0);
- bl->next = NULL;
- DRM_SPINUNINIT( bl->lock );
- return 0;
-}
-
-int DRM(freelist_put)(drm_device_t *dev, drm_freelist_t *bl, drm_buf_t *buf)
-{
- drm_device_dma_t *dma = dev->dma;
-
- if (!dma) {
- DRM_ERROR("No DMA support\n");
- return 1;
- }
-
- if (buf->waiting || buf->pending || buf->list == DRM_LIST_FREE) {
- DRM_ERROR("Freed buffer %d: w%d, p%d, l%d\n",
- buf->idx, buf->waiting, buf->pending, buf->list);
- }
- if (!bl) return 1;
- buf->list = DRM_LIST_FREE;
-
- DRM_SPINLOCK( &bl->lock );
- buf->next = bl->next;
- bl->next = buf;
- DRM_SPINUNLOCK( &bl->lock );
-
- atomic_inc(&bl->count);
- if (atomic_read(&bl->count) > dma->buf_count) {
- DRM_ERROR("%ld of %d buffers free after addition of %d\n",
- (unsigned long)atomic_read(&bl->count),
- dma->buf_count, buf->idx);
- return 1;
- }
- /* Check for high water mark */
- if (atomic_read(&bl->wfh) && atomic_read(&bl->count)>=bl->high_mark) {
- atomic_set(&bl->wfh, 0);
- DRM_WAKEUP_INT((void *)&bl->waiting);
- }
- return 0;
-}
-
-static drm_buf_t *DRM(freelist_try)(drm_freelist_t *bl)
-{
- drm_buf_t *buf;
-
- if (!bl) return NULL;
-
- /* Get buffer */
- DRM_SPINLOCK(&bl->lock);
- if (!bl->next) {
- DRM_SPINUNLOCK(&bl->lock);
- return NULL;
- }
- buf = bl->next;
- bl->next = bl->next->next;
- DRM_SPINUNLOCK(&bl->lock);
-
- atomic_dec(&bl->count);
- buf->next = NULL;
- buf->list = DRM_LIST_NONE;
- if (buf->waiting || buf->pending) {
- DRM_ERROR("Free buffer %d: w%d, p%d, l%d\n",
- buf->idx, buf->waiting, buf->pending, buf->list);
- }
-
- return buf;
-}
-
-drm_buf_t *DRM(freelist_get)(drm_freelist_t *bl, int block)
-{
- drm_buf_t *buf = NULL;
- int error;
-
- if (!bl || !bl->initialized) return NULL;
-
- /* Check for low water mark */
- if (atomic_read(&bl->count) <= bl->low_mark) /* Became low */
- atomic_set(&bl->wfh, 1);
- if (atomic_read(&bl->wfh)) {
- if (block) {
- for (;;) {
- if (!atomic_read(&bl->wfh)
- && (buf = DRM(freelist_try(bl)))) break;
- error = tsleep((void *)&bl->waiting, PZERO|PCATCH,
- "drmfg", 0);
- if (error)
- break;
- }
- }
- return buf;
- }
-
- return DRM(freelist_try)(bl);
-}
-
-#endif /* __HAVE_DMA_FREELIST */