From 01178567ebc428fcf8eb53a62b5ca9c449980491 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Thu, 24 Apr 2003 06:19:54 +0000 Subject: Remove more gamma DMA code. This isn't all of it, but it's a major portion. --- bsd/drm_lists.h | 235 -------------------------------------------------------- 1 file changed, 235 deletions(-) delete mode 100644 bsd/drm_lists.h (limited to 'bsd/drm_lists.h') 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 - * Gareth Hughes - * - * $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 */ -- cgit v1.2.3