diff options
Diffstat (limited to 'linux-core/drm_dma.c')
| -rw-r--r-- | linux-core/drm_dma.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/linux-core/drm_dma.c b/linux-core/drm_dma.c deleted file mode 100644 index f7bff0ac..00000000 --- a/linux-core/drm_dma.c +++ /dev/null @@ -1,179 +0,0 @@ -/** - * \file drm_dma.c - * DMA IOCTL and function support - * - * \author Rickard E. (Rik) Faith <faith@valinux.com> - * \author Gareth Hughes <gareth@valinux.com> - */ - -/* - * Created: Fri Mar 19 14:30:16 1999 by faith@valinux.com - * - * 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. - */ - -#include "drmP.h" - -/** - * Initialize the DMA data. - * - * \param dev DRM device. - * \return zero on success or a negative value on failure. - * - * Allocate and initialize a drm_device_dma structure. - */ -int drm_dma_setup(struct drm_device *dev) -{ - int i; - - dev->dma = drm_alloc(sizeof(*dev->dma), DRM_MEM_DRIVER); - if (!dev->dma) - return -ENOMEM; - - memset(dev->dma, 0, sizeof(*dev->dma)); - - for (i = 0; i <= DRM_MAX_ORDER; i++) - memset(&dev->dma->bufs[i], 0, sizeof(dev->dma->bufs[0])); - - return 0; -} - -/** - * Cleanup the DMA resources. - * - * \param dev DRM device. - * - * Free all pages associated with DMA buffers, the buffers and pages lists, and - * finally the drm_device::dma structure itself. - */ -void drm_dma_takedown(struct drm_device *dev) -{ - struct drm_device_dma *dma = dev->dma; - int i, j; - - if (!dma) - 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++) { - if (dma->bufs[i].seglist[j]) { - drm_pci_free(dev, dma->bufs[i].seglist[j]); - } - } - drm_free(dma->bufs[i].seglist, - dma->bufs[i].seg_count - * sizeof(*dma->bufs[0].seglist), DRM_MEM_SEGS); - } - if (dma->bufs[i].buf_count) { - for (j = 0; j < dma->bufs[i].buf_count; j++) { - if (dma->bufs[i].buflist[j].dev_private) { - drm_free(dma->bufs[i].buflist[j]. - dev_private, - dma->bufs[i].buflist[j]. - dev_priv_size, DRM_MEM_BUFS); - } - } - drm_free(dma->bufs[i].buflist, - dma->bufs[i].buf_count * - sizeof(*dma->bufs[0].buflist), DRM_MEM_BUFS); - } - } - - if (dma->buflist) { - drm_free(dma->buflist, - dma->buf_count * sizeof(*dma->buflist), DRM_MEM_BUFS); - } - - if (dma->pagelist) { - drm_free(dma->pagelist, - dma->page_count * sizeof(*dma->pagelist), - DRM_MEM_PAGES); - } - drm_free(dev->dma, sizeof(*dev->dma), DRM_MEM_DRIVER); - dev->dma = NULL; -} - -/** - * Free a buffer. - * - * \param dev DRM device. - * \param buf buffer to free. - * - * Resets the fields of \p buf. - */ -void drm_free_buffer(struct drm_device *dev, struct drm_buf *buf) -{ - if (!buf) - return; - - buf->waiting = 0; - buf->pending = 0; - buf->file_priv = NULL; - buf->used = 0; - - if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) - && waitqueue_active(&buf->dma_wait)) { - wake_up_interruptible(&buf->dma_wait); - } -} - -/** - * Reclaim the buffers. - * - * \param file_priv DRM file private. - * - * Frees each buffer associated with \p file_priv not already on the hardware. - */ -void drm_core_reclaim_buffers(struct drm_device *dev, - struct drm_file *file_priv) -{ - struct drm_device_dma *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; - } - } - } -} -EXPORT_SYMBOL(drm_core_reclaim_buffers); |