diff options
Diffstat (limited to 'bsd-core/drm_dma.c')
| -rw-r--r-- | bsd-core/drm_dma.c | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/bsd-core/drm_dma.c b/bsd-core/drm_dma.c deleted file mode 100644 index c2d9994e..00000000 --- a/bsd-core/drm_dma.c +++ /dev/null @@ -1,136 +0,0 @@ -/*- - * Copyright 1999, 2000 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> - * - */ - -/** @file drm_dma.c - * Support code for DMA buffer management. - * - * The implementation used to be significantly more complicated, but the - * complexity has been moved into the drivers as different buffer management - * schemes evolved. - */ - -#include "drmP.h" - -int drm_dma_setup(struct drm_device *dev) -{ - - dev->dma = malloc(sizeof(*dev->dma), DRM_MEM_DRIVER, M_NOWAIT | M_ZERO); - if (dev->dma == NULL) - return ENOMEM; - - DRM_SPININIT(&dev->dma_lock, "drmdma"); - - return 0; -} - -void drm_dma_takedown(struct drm_device *dev) -{ - drm_device_dma_t *dma = dev->dma; - int i, j; - - if (dma == NULL) - return; - - /* Clear dma buffers */ - for (i = 0; i <= DRM_MAX_ORDER; i++) { - if (dma->bufs[i].seg_count) { - DRM_DEBUG("order %d: buf_count = %d," - " seg_count = %d\n", i, dma->bufs[i].buf_count, - dma->bufs[i].seg_count); - for (j = 0; j < dma->bufs[i].seg_count; j++) { - drm_pci_free(dev, dma->bufs[i].seglist[j]); - } - free(dma->bufs[i].seglist, DRM_MEM_SEGS); - } - - if (dma->bufs[i].buf_count) { - for (j = 0; j < dma->bufs[i].buf_count; j++) { - free(dma->bufs[i].buflist[j].dev_private, - DRM_MEM_BUFS); - } - free(dma->bufs[i].buflist, DRM_MEM_BUFS); - } - } - - free(dma->buflist, DRM_MEM_BUFS); - free(dma->pagelist, DRM_MEM_PAGES); - free(dev->dma, DRM_MEM_DRIVER); - dev->dma = NULL; - DRM_SPINUNINIT(&dev->dma_lock); -} - - -void drm_free_buffer(struct drm_device *dev, drm_buf_t *buf) -{ - if (!buf) - return; - - buf->pending = 0; - buf->file_priv= NULL; - buf->used = 0; -} - -void drm_reclaim_buffers(struct drm_device *dev, struct drm_file *file_priv) -{ - drm_device_dma_t *dma = dev->dma; - int i; - - if (!dma) - return; - - for (i = 0; i < dma->buf_count; i++) { - if (dma->buflist[i]->file_priv == file_priv) { - switch (dma->buflist[i]->list) { - case DRM_LIST_NONE: - drm_free_buffer(dev, dma->buflist[i]); - break; - case DRM_LIST_WAIT: - dma->buflist[i]->list = DRM_LIST_RECLAIM; - break; - default: - /* Buffer already on hardware. */ - break; - } - } - } -} - -/* Call into the driver-specific DMA handler */ -int drm_dma(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - - if (dev->driver->dma_ioctl) { - /* shared code returns -errno */ - return -dev->driver->dma_ioctl(dev, data, file_priv); - } else { - DRM_DEBUG("DMA ioctl on driver with no dma handler\n"); - return EINVAL; - } -} |