--- /dev/null
+/* agpsupport.c -- 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
+ * 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.
+ *
+ * Author: Rickard E. (Rik) Faith <faith@valinux.com>
+ *
+ */
+
+#define __NO_VERSION__
+#include "drmP.h"
+#include <linux/module.h>
+
+const drm_agp_t *drm_agp_p;
+
+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->acquired || !(drm_agp_p->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->acquired || !(drm_agp_p->acquire)) return -EINVAL;
+ if ((retcode = (*(drm_agp_p->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->acquired || !(drm_agp_p->release)) return -EINVAL;
+ (*(drm_agp_p->release))();
+ dev->agp->acquired = 0;
+ return 0;
+
+}
+
+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->acquired || !(drm_agp_p->enable)) return -EINVAL;
+
+ if (copy_from_user(&mode, (drm_agp_mode_t *)arg, sizeof(mode)))
+ return -EFAULT;
+
+ dev->agp->mode = mode.mode;
+ (*(drm_agp_p->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->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->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->acquired || !(drm_agp_p->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->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_p = (drm_agp_t *)inter_module_get("drm_agp");
+ DRM_DEBUG("drm_agp_p = %p\n", drm_agp_p);
+
+ if (drm_agp_p) {
+ if (!(head = drm_alloc(sizeof(*head), DRM_MEM_AGPLISTS)))
+ return NULL;
+ memset((void *)head, 0, sizeof(*head));
+ (*(drm_agp_p->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_I840: head->chipset = "Intel i840"; 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;
+ default: head->chipset = "Unknown"; break;
+ }
+ 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)
+{
+ inter_module_put("drm_agp");
+}
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