diff options
Diffstat (limited to 'bsd-core/drm_scatter.c')
-rw-r--r-- | bsd-core/drm_scatter.c | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/bsd-core/drm_scatter.c b/bsd-core/drm_scatter.c deleted file mode 100644 index 09bc5aae..00000000 --- a/bsd-core/drm_scatter.c +++ /dev/null @@ -1,190 +0,0 @@ -/*- - * 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 - * PRECISION INSIGHT 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: - * Gareth Hughes <gareth@valinux.com> - * Eric Anholt <anholt@FreeBSD.org> - * - */ - -/** @file drm_scatter.c - * Allocation of memory for scatter-gather mappings by the graphics chip. - * - * The memory allocated here is then made into an aperture in the card - * by drm_ati_pcigart_init(). - */ - -#include "drmP.h" - -static void drm_sg_alloc_cb(void *arg, bus_dma_segment_t *segs, - int nsegs, int error); - -int -drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather *request) -{ - struct drm_sg_mem *entry; - struct drm_dma_handle *dmah; - unsigned long pages; - int ret; - - if (dev->sg) - return EINVAL; - - entry = malloc(sizeof(*entry), DRM_MEM_SGLISTS, M_WAITOK | M_ZERO); - if (!entry) - return ENOMEM; - - pages = round_page(request->size) / PAGE_SIZE; - DRM_DEBUG("sg size=%ld pages=%ld\n", request->size, pages); - - entry->pages = pages; - - entry->busaddr = malloc(pages * sizeof(*entry->busaddr), DRM_MEM_PAGES, - M_WAITOK | M_ZERO); - if (!entry->busaddr) { - free(entry, DRM_MEM_SGLISTS); - return ENOMEM; - } - - dmah = malloc(sizeof(struct drm_dma_handle), DRM_MEM_DMA, - M_ZERO | M_NOWAIT); - if (dmah == NULL) { - free(entry->busaddr, DRM_MEM_PAGES); - free(entry, DRM_MEM_SGLISTS); - return ENOMEM; - } - - ret = bus_dma_tag_create(NULL, PAGE_SIZE, 0, /* tag, align, boundary */ - BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, /* lowaddr, highaddr */ - NULL, NULL, /* filtfunc, filtfuncargs */ - request->size, pages, /* maxsize, nsegs */ - PAGE_SIZE, 0, /* maxsegsize, flags */ - NULL, NULL, /* lockfunc, lockfuncargs */ - &dmah->tag); - if (ret != 0) { - free(dmah, DRM_MEM_DMA); - free(entry->busaddr, DRM_MEM_PAGES); - free(entry, DRM_MEM_SGLISTS); - return ENOMEM; - } - - 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); - free(entry->busaddr, DRM_MEM_PAGES); - free(entry, DRM_MEM_SGLISTS); - return ENOMEM; - } - - ret = bus_dmamap_load(dmah->tag, dmah->map, dmah->vaddr, - request->size, drm_sg_alloc_cb, entry, - 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); - free(entry->busaddr, DRM_MEM_PAGES); - free(entry, DRM_MEM_SGLISTS); - return ENOMEM; - } - - entry->sg_dmah = dmah; - entry->handle = (unsigned long)dmah->vaddr; - - DRM_DEBUG("sg alloc handle = %08lx\n", entry->handle); - - entry->virtual = (void *)entry->handle; - request->handle = entry->handle; - - DRM_LOCK(); - if (dev->sg) { - DRM_UNLOCK(); - drm_sg_cleanup(entry); - return EINVAL; - } - dev->sg = entry; - DRM_UNLOCK(); - - return 0; -} - -static void -drm_sg_alloc_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error) -{ - struct drm_sg_mem *entry = arg; - int i; - - if (error != 0) - return; - - for(i = 0 ; i < nsegs ; i++) { - entry->busaddr[i] = segs[i].ds_addr; - } -} - -int -drm_sg_alloc_ioctl(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - struct drm_scatter_gather *request = data; - - DRM_DEBUG("\n"); - - return drm_sg_alloc(dev, request); -} - -void -drm_sg_cleanup(struct drm_sg_mem *entry) -{ - struct drm_dma_handle *dmah = entry->sg_dmah; - - bus_dmamap_unload(dmah->tag, dmah->map); - bus_dmamem_free(dmah->tag, dmah->vaddr, dmah->map); - bus_dma_tag_destroy(dmah->tag); - free(dmah, DRM_MEM_DMA); - free(entry->busaddr, DRM_MEM_PAGES); - free(entry, DRM_MEM_SGLISTS); -} - -int -drm_sg_free(struct drm_device *dev, void *data, struct drm_file *file_priv) -{ - struct drm_scatter_gather *request = data; - struct drm_sg_mem *entry; - - DRM_LOCK(); - entry = dev->sg; - dev->sg = NULL; - DRM_UNLOCK(); - - if (!entry || entry->handle != request->handle) - return EINVAL; - - DRM_DEBUG("sg free virtual = 0x%lx\n", entry->handle); - - drm_sg_cleanup(entry); - - return 0; -} |