diff options
Diffstat (limited to 'bsd-core/ati_pcigart.c')
-rw-r--r-- | bsd-core/ati_pcigart.c | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/bsd-core/ati_pcigart.c b/bsd-core/ati_pcigart.c deleted file mode 100644 index bae10a69..00000000 --- a/bsd-core/ati_pcigart.c +++ /dev/null @@ -1,219 +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> - * - */ - -/** @file ati_pcigart.c - * Implementation of ATI's PCIGART, which provides an aperture in card virtual - * address space with addresses remapped to system memory. - */ - -#include "drmP.h" - -#define ATI_PCIGART_PAGE_SIZE 4096 /* PCI GART page size */ -#define ATI_PCIGART_PAGE_MASK (~(ATI_PCIGART_PAGE_SIZE-1)) - -#define ATI_PCIE_WRITE 0x4 -#define ATI_PCIE_READ 0x8 - -static void -drm_ati_alloc_pcigart_table_cb(void *arg, bus_dma_segment_t *segs, - int nsegs, int error) -{ - struct drm_dma_handle *dmah = arg; - - if (error != 0) - return; - - KASSERT(nsegs == 1, - ("drm_ati_alloc_pcigart_table_cb: bad dma segment count")); - - dmah->busaddr = segs[0].ds_addr; -} - -static int -drm_ati_alloc_pcigart_table(struct drm_device *dev, - struct drm_ati_pcigart_info *gart_info) -{ - struct drm_dma_handle *dmah; - int flags, ret; - - dmah = malloc(sizeof(struct drm_dma_handle), DRM_MEM_DMA, - M_ZERO | M_NOWAIT); - if (dmah == NULL) - return ENOMEM; - - DRM_UNLOCK(); - ret = bus_dma_tag_create(NULL, PAGE_SIZE, 0, /* tag, align, boundary */ - gart_info->table_mask, BUS_SPACE_MAXADDR, /* lowaddr, highaddr */ - NULL, NULL, /* filtfunc, filtfuncargs */ - gart_info->table_size, 1, /* maxsize, nsegs */ - gart_info->table_size, /* maxsegsize */ - BUS_DMA_ALLOCNOW, NULL, NULL, /* flags, lockfunc, lockfuncargs */ - &dmah->tag); - if (ret != 0) { - free(dmah, DRM_MEM_DMA); - return ENOMEM; - } - - flags = BUS_DMA_NOWAIT | BUS_DMA_ZERO; - if (gart_info->gart_reg_if == DRM_ATI_GART_IGP) - flags |= BUS_DMA_NOCACHE; - - ret = bus_dmamem_alloc(dmah->tag, &dmah->vaddr, flags, &dmah->map); - if (ret != 0) { - bus_dma_tag_destroy(dmah->tag); - free(dmah, DRM_MEM_DMA); - return ENOMEM; - } - DRM_LOCK(); - - ret = bus_dmamap_load(dmah->tag, dmah->map, dmah->vaddr, - gart_info->table_size, drm_ati_alloc_pcigart_table_cb, dmah, 0); - if (ret != 0) { - bus_dmamem_free(dmah->tag, dmah->vaddr, dmah->map); - bus_dma_tag_destroy(dmah->tag); - free(dmah, DRM_MEM_DMA); - return ENOMEM; - } - - dev->sg->dmah = dmah; - - return 0; -} - -static void -drm_ati_free_pcigart_table(struct drm_device *dev, - struct drm_ati_pcigart_info *gart_info) -{ - struct drm_dma_handle *dmah = dev->sg->dmah; - - bus_dmamem_free(dmah->tag, dmah->vaddr, dmah->map); - bus_dma_tag_destroy(dmah->tag); - free(dmah, DRM_MEM_DMA); - dev->sg->dmah = NULL; -} - -int -drm_ati_pcigart_cleanup(struct drm_device *dev, - struct drm_ati_pcigart_info *gart_info) -{ - /* we need to support large memory configurations */ - if (dev->sg == NULL) { - DRM_ERROR("no scatter/gather memory!\n"); - return 0; - } - - if (gart_info->bus_addr) { - if (gart_info->gart_table_location == DRM_ATI_GART_MAIN) { - gart_info->bus_addr = 0; - if (dev->sg->dmah) - drm_ati_free_pcigart_table(dev, gart_info); - } - } - - return 1; -} - -int -drm_ati_pcigart_init(struct drm_device *dev, - struct drm_ati_pcigart_info *gart_info) -{ - void *address = NULL; - unsigned long pages; - u32 *pci_gart, page_base; - dma_addr_t bus_address = 0; - dma_addr_t entry_addr; - int i, j, ret = 0; - int max_pages; - - /* we need to support large memory configurations */ - if (dev->sg == NULL) { - DRM_ERROR("no scatter/gather memory!\n"); - goto done; - } - - if (gart_info->gart_table_location == DRM_ATI_GART_MAIN) { - DRM_DEBUG("PCI: no table in VRAM: using normal RAM\n"); - - ret = drm_ati_alloc_pcigart_table(dev, gart_info); - if (ret) { - DRM_ERROR("cannot allocate PCI GART page!\n"); - goto done; - } - - address = (void *)dev->sg->dmah->vaddr; - bus_address = dev->sg->dmah->busaddr; - } else { - address = gart_info->addr; - bus_address = gart_info->bus_addr; - DRM_DEBUG("PCI: Gart Table: VRAM %08X mapped at %08lX\n", - (unsigned int)bus_address, (unsigned long)address); - } - - pci_gart = (u32 *) address; - - max_pages = (gart_info->table_size / sizeof(u32)); - pages = (dev->sg->pages <= max_pages) - ? dev->sg->pages : max_pages; - - memset(pci_gart, 0, max_pages * sizeof(u32)); - - KASSERT(PAGE_SIZE >= ATI_PCIGART_PAGE_SIZE, ("page size too small")); - - for (i = 0; i < pages; i++) { - entry_addr = dev->sg->busaddr[i]; - for (j = 0; j < (PAGE_SIZE / ATI_PCIGART_PAGE_SIZE); j++) { - page_base = (u32) entry_addr & ATI_PCIGART_PAGE_MASK; - switch(gart_info->gart_reg_if) { - case DRM_ATI_GART_IGP: - page_base |= - (upper_32_bits(entry_addr) & 0xff) << 4; - page_base |= 0xc; - break; - case DRM_ATI_GART_PCIE: - page_base >>= 8; - page_base |= - (upper_32_bits(entry_addr) & 0xff) << 24; - page_base |= ATI_PCIE_READ | ATI_PCIE_WRITE; - break; - default: - case DRM_ATI_GART_PCI: - break; - } - *pci_gart = cpu_to_le32(page_base); - pci_gart++; - entry_addr += ATI_PCIGART_PAGE_SIZE; - } - } - - ret = 1; - - done: - gart_info->addr = address; - gart_info->bus_addr = bus_address; - return ret; -} |