diff options
Diffstat (limited to 'linux-core/via_buffer.c')
| -rw-r--r-- | linux-core/via_buffer.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/linux-core/via_buffer.c b/linux-core/via_buffer.c new file mode 100644 index 00000000..f156ee6d --- /dev/null +++ b/linux-core/via_buffer.c @@ -0,0 +1,163 @@ +/************************************************************************** + * + * Copyright (c) 2007 Tungsten Graphics, Inc., Cedar Park, TX., USA, + * 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, sub license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS 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: Thomas Hellström <thomas-at-tungstengraphics-dot-com> + */ + +#include "drmP.h" +#include "via_drm.h" +#include "via_drv.h" + +drm_ttm_backend_t *via_create_ttm_backend_entry(drm_device_t * dev) +{ + return drm_agp_init_ttm(dev, NULL); +} + +int via_fence_types(drm_buffer_object_t *bo, uint32_t * class, uint32_t * type) +{ + *class = 0; + *type = 3; + return 0; +} + +int via_invalidate_caches(drm_device_t * dev, uint32_t flags) +{ + /* + * FIXME: Invalidate texture caches here. + */ + + return 0; +} + + +static int via_vram_info(drm_device_t *dev, + unsigned long *offset, + unsigned long *size) +{ + struct pci_dev *pdev = dev->pdev; + unsigned long flags; + + int ret = DRM_ERR(EINVAL); + int i; + for (i=0; i<6; ++i) { + flags = pci_resource_flags(pdev, i); + if ((flags & (IORESOURCE_MEM | IORESOURCE_PREFETCH)) == + (IORESOURCE_MEM | IORESOURCE_PREFETCH)) { + ret = 0; + break; + } + } + + if (ret) { + DRM_ERROR("Could not find VRAM PCI resource\n"); + return ret; + } + + *offset = pci_resource_start(pdev, i); + *size = pci_resource_end(pdev, i) - *offset + 1; + return 0; +} + +int via_init_mem_type(drm_device_t * dev, uint32_t type, + drm_mem_type_manager_t * man) +{ + switch (type) { + case DRM_BO_MEM_LOCAL: + /* System memory */ + + man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE | + _DRM_FLAG_MEMTYPE_CACHED; + man->drm_bus_maptype = 0; + break; + + case DRM_BO_MEM_TT: + /* Dynamic agpgart memory */ + + if (!(drm_core_has_AGP(dev) && dev->agp)) { + DRM_ERROR("AGP is not enabled for memory type %u\n", + (unsigned)type); + return -EINVAL; + } + man->io_offset = dev->agp->agp_info.aper_base; + man->io_size = dev->agp->agp_info.aper_size * 1024 * 1024; + man->io_addr = NULL; + man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE | _DRM_FLAG_NEEDS_IOREMAP; + + /* Only to get pte protection right. */ + + man->drm_bus_maptype = _DRM_AGP; + break; + + case DRM_BO_MEM_VRAM: + /* "On-card" video ram */ + + man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE | _DRM_FLAG_NEEDS_IOREMAP; + man->drm_bus_maptype = _DRM_FRAME_BUFFER; + man->io_addr = NULL; + return via_vram_info(dev, &man->io_offset, &man->io_size); + break; + + case DRM_BO_MEM_PRIV0: + /* Pre-bound agpgart memory */ + + if (!(drm_core_has_AGP(dev) && dev->agp)) { + DRM_ERROR("AGP is not enabled for memory type %u\n", + (unsigned)type); + return -EINVAL; + } + man->io_offset = dev->agp->agp_info.aper_base; + man->io_size = dev->agp->agp_info.aper_size * 1024 * 1024; + man->io_addr = NULL; + man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE | + _DRM_FLAG_MEMTYPE_FIXED | _DRM_FLAG_NEEDS_IOREMAP; + man->drm_bus_maptype = _DRM_AGP; + break; + + default: + DRM_ERROR("Unsupported memory type %u\n", (unsigned)type); + return -EINVAL; + } + return 0; +} + +uint32_t via_evict_mask(drm_buffer_object_t *bo) +{ + switch (bo->mem.mem_type) { + case DRM_BO_MEM_LOCAL: + case DRM_BO_MEM_TT: + return DRM_BO_FLAG_MEM_LOCAL; /* Evict TT to local */ + case DRM_BO_MEM_PRIV0: /* Evict pre-bound AGP to TT */ + return DRM_BO_MEM_TT; + case DRM_BO_MEM_VRAM: + if (bo->mem.num_pages > 128) + return DRM_BO_MEM_TT; + else + return DRM_BO_MEM_LOCAL; + default: + return DRM_BO_MEM_LOCAL; + } +} |