/* drm_agpsupport.h -- DRM support for AGP/GART backend -*- linux-c -*- * Created: Mon Dec 13 09:56:45 1999 by faith@precisioninsight.com * * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. * 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 * VA LINUX SYSTEMS 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. * * Author: * Rickard E. (Rik) Faith <faith@valinux.com> * Gareth Hughes <gareth@valinux.com> */ #define __NO_VERSION__ #include "drmP.h" #include <linux/module.h> #if __REALLY_HAVE_AGP #if LINUX_VERSION_CODE < 0x020400 #include "agpsupport-pre24.h" #else #define DRM_AGP_GET (drm_agp_t *)inter_module_get("drm_agp") #define DRM_AGP_PUT inter_module_put("drm_agp") #endif static const drm_agp_t *drm_agp = NULL; int DRM(agp_info)(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; agp_kern_info *kern; drm_agp_info_t info; if (!dev->agp || !dev->agp->acquired || !drm_agp->copy_info) return -EINVAL; kern = &dev->agp->agp_info; info.agp_version_major = kern->version.major; info.agp_version_minor = kern->version.minor; info.mode = kern->mode; info.aperture_base = kern->aper_base; info.aperture_size = kern->aper_size * 1024 * 1024; info.memory_allowed = kern->max_memory << PAGE_SHIFT; info.memory_used = kern->current_memory << PAGE_SHIFT; info.id_vendor = kern->device->vendor; info.id_device = kern->device->device; if (copy_to_user((drm_agp_info_t *)arg, &info, sizeof(info))) return -EFAULT; return 0; } int DRM(agp_acquire)(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; int retcode; if (!dev->agp || dev->agp->acquired || !drm_agp->acquire) return -EINVAL; if ((retcode = drm_agp->acquire())) return retcode; dev->agp->acquired = 1; return 0; } int DRM(agp_release)(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; if (!dev->agp || !dev->agp->acquired || !drm_agp->release) return -EINVAL; drm_agp->release(); dev->agp->acquired = 0; return 0; } void DRM(agp_do_release)(void) { if (drm_agp->release) drm_agp->release(); } int DRM(agp_enable)(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_agp_mode_t mode; if (!dev->agp || !dev->agp->acquired || !drm_agp->enable) return -EINVAL; if (copy_from_user(&mode, (drm_agp_mode_t *)arg, sizeof(mode))) return -EFAULT; dev->agp->mode = mode.mode; drm_agp->enable(mode.mode); dev->agp->base = dev->agp->agp_info.aper_base; dev->agp->enabled = 1; return 0; } int DRM(agp_alloc)(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_agp_buffer_t request; drm_agp_mem_t *entry; agp_memory *memory; unsigned long pages; u32 type; if (!dev->agp || !dev->agp->acquired) return -EINVAL; if (copy_from_user(&request, (drm_agp_buffer_t *)arg, sizeof(request))) return -EFAULT; if (!(entry = DRM(alloc)(sizeof(*entry), DRM_MEM_AGPLISTS))) return -ENOMEM; memset(entry, 0, sizeof(*entry)); pages = (request.size + PAGE_SIZE - 1) / PAGE_SIZE; type = (u32) request.type; if (!(memory = DRM(alloc_agp)(pages, type))) { DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS); return -ENOMEM; } entry->handle = (unsigned long)memory->memory; entry->memory = memory; entry->bound = 0; entry->pages = pages; entry->prev = NULL; entry->next = dev->agp->memory; if (dev->agp->memory) dev->agp->memory->prev = entry; dev->agp->memory = entry; request.handle = entry->handle; request.physical = memory->physical; if (copy_to_user((drm_agp_buffer_t *)arg, &request, sizeof(request))) { dev->agp->memory = entry->next; dev->agp->memory->prev = NULL; DRM(free_agp)(memory, pages); DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS); return -EFAULT; } return 0; } static drm_agp_mem_t *DRM(agp_lookup_entry)(drm_device_t *dev, unsigned long handle) { drm_agp_mem_t *entry; for (entry = dev->agp->memory; entry; entry = entry->next) { if (entry->handle == handle) return entry; } return NULL; } int DRM(agp_unbind)(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_agp_binding_t request; drm_agp_mem_t *entry; if (!dev->agp || !dev->agp->acquired) return -EINVAL; if (copy_from_user(&request, (drm_agp_binding_t *)arg, sizeof(request))) return -EFAULT; if (!(entry = DRM(agp_lookup_entry)(dev, request.handle))) return -EINVAL; if (!entry->bound) return -EINVAL; return DRM(unbind_agp)(entry->memory); } int DRM(agp_bind)(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_agp_binding_t request; drm_agp_mem_t *entry; int retcode; int page; if (!dev->agp || !dev->agp->acquired || !drm_agp->bind_memory) return -EINVAL; if (copy_from_user(&request, (drm_agp_binding_t *)arg, sizeof(request))) return -EFAULT; if (!(entry = DRM(agp_lookup_entry)(dev, request.handle))) return -EINVAL; if (entry->bound) return -EINVAL; page = (request.offset + PAGE_SIZE - 1) / PAGE_SIZE; if ((retcode = DRM(bind_agp)(entry->memory, page))) return retcode; entry->bound = dev->agp->base + (page << PAGE_SHIFT); DRM_DEBUG("base = 0x%lx entry->bound = 0x%lx\n", dev->agp->base, entry->bound); return 0; } int DRM(agp_free)(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->dev; drm_agp_buffer_t request; drm_agp_mem_t *entry; if (!dev->agp || !dev->agp->acquired) return -EINVAL; if (copy_from_user(&request, (drm_agp_buffer_t *)arg, sizeof(request))) return -EFAULT; if (!(entry = DRM(agp_lookup_entry)(dev, request.handle))) return -EINVAL; if (entry->bound) DRM(unbind_agp)(entry->memory); if (entry->prev) entry->prev->next = entry->next; else dev->agp->memory = entry->next; if (entry->next) entry->next->prev = entry->prev; DRM(free_agp)(entry->memory, entry->pages); DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS); return 0; } drm_agp_head_t *DRM(agp_init)(void) { drm_agp_head_t *head = NULL; drm_agp = DRM_AGP_GET; if (drm_agp) { if (!(head = DRM(alloc)(sizeof(*head), DRM_MEM_AGPLISTS))) return NULL; memset((void *)head, 0, sizeof(*head)); drm_agp->copy_info(&head->agp_info); if (head->agp_info.chipset == NOT_SUPPORTED) { DRM(free)(head, sizeof(*head), DRM_MEM_AGPLISTS); return NULL; } head->memory = NULL; switch (head->agp_info.chipset) { case INTEL_GENERIC: head->chipset = "Intel"; break; case INTEL_LX: head->chipset = "Intel 440LX"; break; case INTEL_BX: head->chipset = "Intel 440BX"; break; case INTEL_GX: head->chipset = "Intel 440GX"; break; case INTEL_I810: head->chipset = "Intel i810"; break; #if LINUX_VERSION_CODE >= 0x020400 case INTEL_I815: head->chipset = "Intel i815"; break; case INTEL_I820: head->chipset = "Intel i820"; break; case INTEL_I840: head->chipset = "Intel i840"; break; case INTEL_I845: head->chipset = "Intel i845"; break; case INTEL_I850: head->chipset = "Intel i850"; break; #endif case VIA_GENERIC: head->chipset = "VIA"; break; case VIA_VP3: head->chipset = "VIA VP3"; break; case VIA_MVP3: head->chipset = "VIA MVP3"; break; #if LINUX_VERSION_CODE >= 0x020400 case VIA_MVP4: head->chipset = "VIA MVP4"; break; case VIA_APOLLO_KX133: head->chipset = "VIA Apollo KX133"; break; case VIA_APOLLO_KT133: head->chipset = "VIA Apollo KT133"; break; #endif case VIA_APOLLO_PRO: head->chipset = "VIA Apollo Pro"; break; case SIS_GENERIC: head->chipset = "SiS"; break; case AMD_GENERIC: head->chipset = "AMD"; break; case AMD_IRONGATE: head->chipset = "AMD Irongate"; break; case ALI_GENERIC: head->chipset = "ALi"; break; case ALI_M1541: head->chipset = "ALi M1541"; break; #if LINUX_VERSION_CODE >= 0x020402 case ALI_M1621: head->chipset = "ALi M1621"; break; case ALI_M1631: head->chipset = "ALi M1631"; break; case ALI_M1632: head->chipset = "ALi M1632"; break; case ALI_M1641: head->chipset = "ALi M1641"; break; case ALI_M1644: head->chipset = "ALi M1644"; break; case ALI_M1647: head->chipset = "ALi M1647"; break; case ALI_M1651: head->chipset = "ALi M1651"; break; #endif #if LINUX_VERSION_CODE >= 0x020406 case SVWRKS_HE: head->chipset = "Serverworks HE"; break; case SVWRKS_LE: head->chipset = "Serverworks LE"; break; case SVWRKS_GENERIC: head->chipset = "Serverworks Generic"; break; #endif default: head->chipset = "Unknown"; break; } #if LINUX_VERSION_CODE <= 0x020408 head->cant_use_aperture = 0; head->page_mask = ~(0xfff); #else head->cant_use_aperture = head->agp_info.cant_use_aperture; head->page_mask = head->agp_info.page_mask; #endif DRM_INFO("AGP %d.%d on %s @ 0x%08lx %ZuMB\n", head->agp_info.version.major, head->agp_info.version.minor, head->chipset, head->agp_info.aper_base, head->agp_info.aper_size); } return head; } void DRM(agp_uninit)(void) { DRM_AGP_PUT; drm_agp = NULL; } agp_memory *DRM(agp_allocate_memory)(size_t pages, u32 type) { if (!drm_agp->allocate_memory) return NULL; return drm_agp->allocate_memory(pages, type); } int DRM(agp_free_memory)(agp_memory *handle) { if (!handle || !drm_agp->free_memory) return 0; drm_agp->free_memory(handle); return 1; } int DRM(agp_bind_memory)(agp_memory *handle, off_t start) { if (!handle || !drm_agp->bind_memory) return -EINVAL; return drm_agp->bind_memory(handle, start); } int DRM(agp_unbind_memory)(agp_memory *handle) { if (!handle || !drm_agp->unbind_memory) return -EINVAL; return drm_agp->unbind_memory(handle); } #endif /* __REALLY_HAVE_AGP */