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-rw-r--r--bsd-core/drm_pci.c125
1 files changed, 0 insertions, 125 deletions
diff --git a/bsd-core/drm_pci.c b/bsd-core/drm_pci.c
deleted file mode 100644
index b2d2635c..00000000
--- a/bsd-core/drm_pci.c
+++ /dev/null
@@ -1,125 +0,0 @@
-/*-
- * Copyright 2003 Eric Anholt.
- * 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 THE
- * AUTHOR 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.
- */
-
-/**
- * \file drm_pci.h
- * \brief PCI consistent, DMA-accessible memory allocation.
- *
- * \author Eric Anholt <anholt@FreeBSD.org>
- */
-
-#include "drmP.h"
-
-/**********************************************************************/
-/** \name PCI memory */
-/*@{*/
-
-static void
-drm_pci_busdma_callback(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
-{
- drm_dma_handle_t *dmah = arg;
-
- if (error != 0)
- return;
-
- KASSERT(nsegs == 1, ("drm_pci_busdma_callback: bad dma segment count"));
- dmah->busaddr = segs[0].ds_addr;
-}
-
-/**
- * \brief Allocate a physically contiguous DMA-accessible consistent
- * memory block.
- */
-drm_dma_handle_t *
-drm_pci_alloc(struct drm_device *dev, size_t size,
- size_t align, dma_addr_t maxaddr)
-{
- drm_dma_handle_t *dmah;
- int ret;
-
- /* Need power-of-two alignment, so fail the allocation if it isn't. */
- if ((align & (align - 1)) != 0) {
- DRM_ERROR("drm_pci_alloc with non-power-of-two alignment %d\n",
- (int)align);
- return NULL;
- }
-
- dmah = malloc(sizeof(drm_dma_handle_t), DRM_MEM_DMA, M_ZERO | M_NOWAIT);
- if (dmah == NULL)
- return NULL;
-
- /* Make sure we aren't holding locks here */
- mtx_assert(&dev->dev_lock, MA_NOTOWNED);
- if (mtx_owned(&dev->dev_lock))
- DRM_ERROR("called while holding dev_lock\n");
- mtx_assert(&dev->dma_lock, MA_NOTOWNED);
- if (mtx_owned(&dev->dma_lock))
- DRM_ERROR("called while holding dma_lock\n");
-
- ret = bus_dma_tag_create(NULL, align, 0, /* tag, align, boundary */
- maxaddr, BUS_SPACE_MAXADDR, /* lowaddr, highaddr */
- NULL, NULL, /* filtfunc, filtfuncargs */
- size, 1, size, /* maxsize, nsegs, maxsegsize */
- 0, NULL, NULL, /* flags, lockfunc, lockfuncargs */
- &dmah->tag);
- if (ret != 0) {
- free(dmah, DRM_MEM_DMA);
- return NULL;
- }
-
- ret = bus_dmamem_alloc(dmah->tag, &dmah->vaddr,
- BUS_DMA_WAITOK | BUS_DMA_ZERO, &dmah->map);
- if (ret != 0) {
- bus_dma_tag_destroy(dmah->tag);
- free(dmah, DRM_MEM_DMA);
- return NULL;
- }
-
- ret = bus_dmamap_load(dmah->tag, dmah->map, dmah->vaddr, size,
- drm_pci_busdma_callback, dmah, BUS_DMA_NOWAIT | BUS_DMA_NOCACHE);
- if (ret != 0) {
- bus_dmamem_free(dmah->tag, dmah->vaddr, dmah->map);
- bus_dma_tag_destroy(dmah->tag);
- free(dmah, DRM_MEM_DMA);
- return NULL;
- }
-
- return dmah;
-}
-
-/**
- * \brief Free a DMA-accessible consistent memory block.
- */
-void
-drm_pci_free(struct drm_device *dev, drm_dma_handle_t *dmah)
-{
- if (dmah == NULL)
- return;
-
- bus_dmamem_free(dmah->tag, dmah->vaddr, dmah->map);
- bus_dma_tag_destroy(dmah->tag);
-
- free(dmah, DRM_MEM_DMA);
-}
-
-/*@}*/