d0538f66491267879b7418b21ad78e3dcc2dcc83cg/*
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * Use is subject to license terms.
d0538f66491267879b7418b21ad78e3dcc2dcc83cg */
d0538f66491267879b7418b21ad78e3dcc2dcc83cg/*
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * ati_pcigart.h -- ATI PCI GART support -*- linux-c -*-
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * Created: Wed Dec 13 21:52:19 2000 by gareth@valinux.com
d0538f66491267879b7418b21ad78e3dcc2dcc83cg */
d0538f66491267879b7418b21ad78e3dcc2dcc83cg/*
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * All Rights Reserved.
d0538f66491267879b7418b21ad78e3dcc2dcc83cg *
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * Permission is hereby granted, free of charge, to any person obtaining a
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * copy of this software and associated documentation files (the "Software"),
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * to deal in the Software without restriction, including without limitation
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * the rights to use, copy, modify, merge, publish, distribute, sublicense,
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * and/or sell copies of the Software, and to permit persons to whom the
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * Software is furnished to do so, subject to the following conditions:
d0538f66491267879b7418b21ad78e3dcc2dcc83cg *
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * The above copyright notice and this permission notice (including the next
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * paragraph) shall be included in all copies or substantial portions of the
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * Software.
d0538f66491267879b7418b21ad78e3dcc2dcc83cg *
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * DEALINGS IN THE SOFTWARE.
d0538f66491267879b7418b21ad78e3dcc2dcc83cg *
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * Authors:
d0538f66491267879b7418b21ad78e3dcc2dcc83cg * Gareth Hughes <gareth@valinux.com>
d0538f66491267879b7418b21ad78e3dcc2dcc83cg *
d0538f66491267879b7418b21ad78e3dcc2dcc83cg */
d0538f66491267879b7418b21ad78e3dcc2dcc83cg
d0538f66491267879b7418b21ad78e3dcc2dcc83cg#include "drmP.h"
d0538f66491267879b7418b21ad78e3dcc2dcc83cg
d0538f66491267879b7418b21ad78e3dcc2dcc83cg#define ATI_PCIGART_PAGE_SIZE 4096 /* PCI GART page size */
d0538f66491267879b7418b21ad78e3dcc2dcc83cg#define ATI_MAX_PCIGART_PAGES 8192 /* 32 MB aperture, 4K pages */
d0538f66491267879b7418b21ad78e3dcc2dcc83cg#define ATI_PCIGART_TABLE_SIZE 32768
d0538f66491267879b7418b21ad78e3dcc2dcc83cg
d0538f66491267879b7418b21ad78e3dcc2dcc83cgint
d0538f66491267879b7418b21ad78e3dcc2dcc83cgdrm_ati_pcigart_init(drm_device_t *dev, drm_ati_pcigart_info *gart_info)
d0538f66491267879b7418b21ad78e3dcc2dcc83cg{
d0538f66491267879b7418b21ad78e3dcc2dcc83cg unsigned long pages;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg drm_sg_mem_t *entry;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg drm_dma_handle_t *dmah;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg u32 *pci_gart = NULL, page_base;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg int i, j, k;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg int pagenum;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg size_t bulksize;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg
d0538f66491267879b7418b21ad78e3dcc2dcc83cg entry = dev->sg;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg if (entry == NULL) {
d0538f66491267879b7418b21ad78e3dcc2dcc83cg DRM_ERROR("no scatter/gather memory!\n");
d0538f66491267879b7418b21ad78e3dcc2dcc83cg return (0);
d0538f66491267879b7418b21ad78e3dcc2dcc83cg }
d0538f66491267879b7418b21ad78e3dcc2dcc83cg
d0538f66491267879b7418b21ad78e3dcc2dcc83cg if (gart_info->gart_table_location == DRM_ATI_GART_MAIN) {
d0538f66491267879b7418b21ad78e3dcc2dcc83cg /* GART table in system memory */
d0538f66491267879b7418b21ad78e3dcc2dcc83cg entry->dmah_gart = drm_pci_alloc(dev, ATI_PCIGART_TABLE_SIZE, 0,
d0538f66491267879b7418b21ad78e3dcc2dcc83cg 0xfffffffful, 1);
d0538f66491267879b7418b21ad78e3dcc2dcc83cg if (entry->dmah_gart == NULL) {
d0538f66491267879b7418b21ad78e3dcc2dcc83cg DRM_ERROR("cannot allocate PCI GART table!\n");
d0538f66491267879b7418b21ad78e3dcc2dcc83cg return (0);
d0538f66491267879b7418b21ad78e3dcc2dcc83cg }
d0538f66491267879b7418b21ad78e3dcc2dcc83cg gart_info->addr = (void *)entry->dmah_gart->vaddr;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg gart_info->bus_addr = entry->dmah_gart->paddr;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg pci_gart = (u32 *)entry->dmah_gart->vaddr;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg } else {
d0538f66491267879b7418b21ad78e3dcc2dcc83cg /* GART table in framebuffer memory */
d0538f66491267879b7418b21ad78e3dcc2dcc83cg pci_gart = gart_info->addr;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg }
d0538f66491267879b7418b21ad78e3dcc2dcc83cg
d0538f66491267879b7418b21ad78e3dcc2dcc83cg pages = DRM_MIN(entry->pages, ATI_MAX_PCIGART_PAGES);
d0538f66491267879b7418b21ad78e3dcc2dcc83cg bzero(pci_gart, ATI_PCIGART_TABLE_SIZE);
8793b36b40d14ad0a0fecc97738dc118a928f46cNick Todd /*CONSTCOND*/
d0538f66491267879b7418b21ad78e3dcc2dcc83cg ASSERT(PAGE_SIZE >= ATI_PCIGART_PAGE_SIZE);
d0538f66491267879b7418b21ad78e3dcc2dcc83cg
d0538f66491267879b7418b21ad78e3dcc2dcc83cg dmah = entry->dmah_sg;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg pagenum = 0;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg for (i = 0; i < dmah->cookie_num; i++) {
d0538f66491267879b7418b21ad78e3dcc2dcc83cg bulksize = dmah->cookie.dmac_size;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg for (k = 0; k < bulksize / PAGE_SIZE; k++) {
d0538f66491267879b7418b21ad78e3dcc2dcc83cg entry->busaddr[pagenum] =
d0538f66491267879b7418b21ad78e3dcc2dcc83cg dmah->cookie.dmac_address + k * PAGE_SIZE;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg page_base = (u32) entry->busaddr[pagenum];
d0538f66491267879b7418b21ad78e3dcc2dcc83cg if (pagenum ++ == pages)
d0538f66491267879b7418b21ad78e3dcc2dcc83cg goto out;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg for (j = 0; j < (PAGE_SIZE / ATI_PCIGART_PAGE_SIZE);
d0538f66491267879b7418b21ad78e3dcc2dcc83cg j++) {
d0538f66491267879b7418b21ad78e3dcc2dcc83cg if (gart_info->is_pcie)
d0538f66491267879b7418b21ad78e3dcc2dcc83cg *pci_gart = (page_base >> 8) | 0xc;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg else
d0538f66491267879b7418b21ad78e3dcc2dcc83cg *pci_gart = page_base;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg pci_gart++;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg page_base += ATI_PCIGART_PAGE_SIZE;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg }
d0538f66491267879b7418b21ad78e3dcc2dcc83cg }
d0538f66491267879b7418b21ad78e3dcc2dcc83cg ddi_dma_nextcookie(dmah->dma_hdl, &dmah->cookie);
d0538f66491267879b7418b21ad78e3dcc2dcc83cg }
d0538f66491267879b7418b21ad78e3dcc2dcc83cg
d0538f66491267879b7418b21ad78e3dcc2dcc83cgout:
d0538f66491267879b7418b21ad78e3dcc2dcc83cg if (gart_info->gart_table_location == DRM_ATI_GART_MAIN) {
d0538f66491267879b7418b21ad78e3dcc2dcc83cg (void) ddi_dma_sync(entry->dmah_gart->dma_hdl, 0,
d0538f66491267879b7418b21ad78e3dcc2dcc83cg entry->dmah_gart->real_sz, DDI_DMA_SYNC_FORDEV);
d0538f66491267879b7418b21ad78e3dcc2dcc83cg }
d0538f66491267879b7418b21ad78e3dcc2dcc83cg
d0538f66491267879b7418b21ad78e3dcc2dcc83cg return (1);
d0538f66491267879b7418b21ad78e3dcc2dcc83cg}
d0538f66491267879b7418b21ad78e3dcc2dcc83cg
d0538f66491267879b7418b21ad78e3dcc2dcc83cg/*ARGSUSED*/
d0538f66491267879b7418b21ad78e3dcc2dcc83cgextern int
d0538f66491267879b7418b21ad78e3dcc2dcc83cgdrm_ati_pcigart_cleanup(drm_device_t *dev, drm_ati_pcigart_info *gart_info)
d0538f66491267879b7418b21ad78e3dcc2dcc83cg{
d0538f66491267879b7418b21ad78e3dcc2dcc83cg drm_dma_handle_t *dmah;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg
d0538f66491267879b7418b21ad78e3dcc2dcc83cg if (dev->sg == NULL) {
d0538f66491267879b7418b21ad78e3dcc2dcc83cg DRM_ERROR("no scatter/gather memory!\n");
d0538f66491267879b7418b21ad78e3dcc2dcc83cg return (0);
d0538f66491267879b7418b21ad78e3dcc2dcc83cg }
d0538f66491267879b7418b21ad78e3dcc2dcc83cg dmah = dev->sg->dmah_gart;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg dev->sg->dmah_gart = NULL;
d0538f66491267879b7418b21ad78e3dcc2dcc83cg if (dmah)
d0538f66491267879b7418b21ad78e3dcc2dcc83cg drm_pci_free(dev, dmah);
d0538f66491267879b7418b21ad78e3dcc2dcc83cg return (1);
d0538f66491267879b7418b21ad78e3dcc2dcc83cg}