Split agpsupport.c into pre-2.4.0 version and current version.
Rik Faith
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94071289a4
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006458f227
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/* agpsupport.c -- DRM support for AGP/GART backend -*- linux-c -*-
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* Created: Mon Dec 13 09:56:45 1999 by faith@precisioninsight.com
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*
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* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
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* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Author: Rickard E. (Rik) Faith <faith@valinux.com>
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*
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*/
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#define __NO_VERSION__
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#include "drmP.h"
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#include <linux/module.h>
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const drm_agp_t *drm_agp_p;
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int drm_agp_info(struct inode *inode, struct file *filp, unsigned int cmd,
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unsigned long arg)
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{
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drm_file_t *priv = filp->private_data;
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drm_device_t *dev = priv->dev;
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agp_kern_info *kern;
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drm_agp_info_t info;
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if (!dev->agp->acquired || !(drm_agp_p->copy_info)) return -EINVAL;
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kern = &dev->agp->agp_info;
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info.agp_version_major = kern->version.major;
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info.agp_version_minor = kern->version.minor;
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info.mode = kern->mode;
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info.aperture_base = kern->aper_base;
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info.aperture_size = kern->aper_size * 1024 * 1024;
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info.memory_allowed = kern->max_memory << PAGE_SHIFT;
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info.memory_used = kern->current_memory << PAGE_SHIFT;
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info.id_vendor = kern->device->vendor;
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info.id_device = kern->device->device;
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if (copy_to_user((drm_agp_info_t *)arg, &info, sizeof(info)))
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return -EFAULT;
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return 0;
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}
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int drm_agp_acquire(struct inode *inode, struct file *filp, unsigned int cmd,
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unsigned long arg)
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{
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drm_file_t *priv = filp->private_data;
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drm_device_t *dev = priv->dev;
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int retcode;
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if (dev->agp->acquired || !(drm_agp_p->acquire)) return -EINVAL;
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if ((retcode = (*(drm_agp_p->acquire))())) return retcode;
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dev->agp->acquired = 1;
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return 0;
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}
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int drm_agp_release(struct inode *inode, struct file *filp, unsigned int cmd,
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unsigned long arg)
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{
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drm_file_t *priv = filp->private_data;
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drm_device_t *dev = priv->dev;
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if (!dev->agp->acquired || !(drm_agp_p->release)) return -EINVAL;
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(*(drm_agp_p->release))();
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dev->agp->acquired = 0;
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return 0;
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}
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int drm_agp_enable(struct inode *inode, struct file *filp, unsigned int cmd,
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unsigned long arg)
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{
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drm_file_t *priv = filp->private_data;
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drm_device_t *dev = priv->dev;
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drm_agp_mode_t mode;
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if (!dev->agp->acquired || !(drm_agp_p->enable)) return -EINVAL;
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if (copy_from_user(&mode, (drm_agp_mode_t *)arg, sizeof(mode)))
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return -EFAULT;
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dev->agp->mode = mode.mode;
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(*(drm_agp_p->enable))(mode.mode);
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dev->agp->base = dev->agp->agp_info.aper_base;
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dev->agp->enabled = 1;
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return 0;
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}
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int drm_agp_alloc(struct inode *inode, struct file *filp, unsigned int cmd,
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unsigned long arg)
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{
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drm_file_t *priv = filp->private_data;
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drm_device_t *dev = priv->dev;
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drm_agp_buffer_t request;
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drm_agp_mem_t *entry;
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agp_memory *memory;
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unsigned long pages;
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u32 type;
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if (!dev->agp->acquired) return -EINVAL;
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if (copy_from_user(&request, (drm_agp_buffer_t *)arg, sizeof(request)))
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return -EFAULT;
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if (!(entry = drm_alloc(sizeof(*entry), DRM_MEM_AGPLISTS)))
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return -ENOMEM;
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memset(entry, 0, sizeof(*entry));
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pages = (request.size + PAGE_SIZE - 1) / PAGE_SIZE;
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type = (u32) request.type;
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if (!(memory = drm_alloc_agp(pages, type))) {
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drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
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return -ENOMEM;
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}
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entry->handle = (unsigned long)memory->memory;
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entry->memory = memory;
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entry->bound = 0;
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entry->pages = pages;
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entry->prev = NULL;
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entry->next = dev->agp->memory;
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if (dev->agp->memory) dev->agp->memory->prev = entry;
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dev->agp->memory = entry;
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request.handle = entry->handle;
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request.physical = memory->physical;
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if (copy_to_user((drm_agp_buffer_t *)arg, &request, sizeof(request))) {
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dev->agp->memory = entry->next;
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dev->agp->memory->prev = NULL;
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drm_free_agp(memory, pages);
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drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
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return -EFAULT;
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}
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return 0;
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}
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static drm_agp_mem_t *drm_agp_lookup_entry(drm_device_t *dev,
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unsigned long handle)
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{
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drm_agp_mem_t *entry;
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for (entry = dev->agp->memory; entry; entry = entry->next) {
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if (entry->handle == handle) return entry;
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}
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return NULL;
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}
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int drm_agp_unbind(struct inode *inode, struct file *filp, unsigned int cmd,
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unsigned long arg)
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{
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drm_file_t *priv = filp->private_data;
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drm_device_t *dev = priv->dev;
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drm_agp_binding_t request;
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drm_agp_mem_t *entry;
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if (!dev->agp->acquired) return -EINVAL;
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if (copy_from_user(&request, (drm_agp_binding_t *)arg, sizeof(request)))
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return -EFAULT;
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if (!(entry = drm_agp_lookup_entry(dev, request.handle)))
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return -EINVAL;
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if (!entry->bound) return -EINVAL;
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return drm_unbind_agp(entry->memory);
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}
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int drm_agp_bind(struct inode *inode, struct file *filp, unsigned int cmd,
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unsigned long arg)
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{
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drm_file_t *priv = filp->private_data;
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drm_device_t *dev = priv->dev;
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drm_agp_binding_t request;
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drm_agp_mem_t *entry;
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int retcode;
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int page;
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if (!dev->agp->acquired || !(drm_agp_p->bind_memory)) return -EINVAL;
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if (copy_from_user(&request, (drm_agp_binding_t *)arg, sizeof(request)))
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return -EFAULT;
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if (!(entry = drm_agp_lookup_entry(dev, request.handle)))
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return -EINVAL;
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if (entry->bound) return -EINVAL;
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page = (request.offset + PAGE_SIZE - 1) / PAGE_SIZE;
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if ((retcode = drm_bind_agp(entry->memory, page))) return retcode;
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entry->bound = dev->agp->base + (page << PAGE_SHIFT);
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DRM_DEBUG("base = 0x%lx entry->bound = 0x%lx\n",
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dev->agp->base, entry->bound);
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return 0;
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}
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int drm_agp_free(struct inode *inode, struct file *filp, unsigned int cmd,
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unsigned long arg)
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{
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drm_file_t *priv = filp->private_data;
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drm_device_t *dev = priv->dev;
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drm_agp_buffer_t request;
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drm_agp_mem_t *entry;
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if (!dev->agp->acquired) return -EINVAL;
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if (copy_from_user(&request, (drm_agp_buffer_t *)arg, sizeof(request)))
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return -EFAULT;
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if (!(entry = drm_agp_lookup_entry(dev, request.handle)))
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return -EINVAL;
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if (entry->bound) drm_unbind_agp(entry->memory);
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if (entry->prev) entry->prev->next = entry->next;
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else dev->agp->memory = entry->next;
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if (entry->next) entry->next->prev = entry->prev;
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drm_free_agp(entry->memory, entry->pages);
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drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
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return 0;
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}
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drm_agp_head_t *drm_agp_init(void)
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{
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drm_agp_head_t *head = NULL;
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drm_agp_p = (drm_agp_t *)inter_module_get("drm_agp");
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DRM_DEBUG("drm_agp_p = %p\n", drm_agp_p);
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if (drm_agp_p) {
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if (!(head = drm_alloc(sizeof(*head), DRM_MEM_AGPLISTS)))
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return NULL;
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memset((void *)head, 0, sizeof(*head));
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(*(drm_agp_p->copy_info))(&head->agp_info);
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if (head->agp_info.chipset == NOT_SUPPORTED) {
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drm_free(head, sizeof(*head), DRM_MEM_AGPLISTS);
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return NULL;
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}
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head->memory = NULL;
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switch (head->agp_info.chipset) {
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case INTEL_GENERIC: head->chipset = "Intel"; break;
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case INTEL_LX: head->chipset = "Intel 440LX"; break;
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case INTEL_BX: head->chipset = "Intel 440BX"; break;
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case INTEL_GX: head->chipset = "Intel 440GX"; break;
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case INTEL_I810: head->chipset = "Intel i810"; break;
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#if LINUX_VERSION_CODE >= 0x020400
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case INTEL_I840: head->chipset = "Intel i840"; break;
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#endif
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case VIA_GENERIC: head->chipset = "VIA"; break;
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case VIA_VP3: head->chipset = "VIA VP3"; break;
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case VIA_MVP3: head->chipset = "VIA MVP3"; break;
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#if LINUX_VERSION_CODE >= 0x020400
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case VIA_MVP4: head->chipset = "VIA MVP4"; break;
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case VIA_APOLLO_KX133: head->chipset = "VIA Apollo KX133";
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break;
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case VIA_APOLLO_KT133: head->chipset = "VIA Apollo KT133";
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break;
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#endif
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case VIA_APOLLO_PRO: head->chipset = "VIA Apollo Pro";
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break;
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case SIS_GENERIC: head->chipset = "SiS"; break;
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case AMD_GENERIC: head->chipset = "AMD"; break;
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case AMD_IRONGATE: head->chipset = "AMD Irongate"; break;
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case ALI_GENERIC: head->chipset = "ALi"; break;
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case ALI_M1541: head->chipset = "ALi M1541"; break;
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default: head->chipset = "Unknown"; break;
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}
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DRM_INFO("AGP %d.%d on %s @ 0x%08lx %ZuMB\n",
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head->agp_info.version.major,
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head->agp_info.version.minor,
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head->chipset,
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head->agp_info.aper_base,
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head->agp_info.aper_size);
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}
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return head;
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}
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void drm_agp_uninit(void)
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{
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inter_module_put("drm_agp");
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}
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