drm_ioctl.h
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上传日期:2013-02-24
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- /* drm_ioctl.h -- IOCTL processing for DRM -*- linux-c -*-
- * Created: Fri Jan 8 09:01:26 1999 by faith@valinux.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.
- *
- * Authors:
- * Rickard E. (Rik) Faith <faith@valinux.com>
- * Gareth Hughes <gareth@valinux.com>
- */
- #define __NO_VERSION__
- #include "drmP.h"
- int DRM(irq_busid)(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
- {
- drm_irq_busid_t p;
- struct pci_dev *dev;
- if (copy_from_user(&p, (drm_irq_busid_t *)arg, sizeof(p)))
- return -EFAULT;
- dev = pci_find_slot(p.busnum, PCI_DEVFN(p.devnum, p.funcnum));
- if (dev) p.irq = dev->irq;
- else p.irq = 0;
- DRM_DEBUG("%d:%d:%d => IRQ %dn",
- p.busnum, p.devnum, p.funcnum, p.irq);
- if (copy_to_user((drm_irq_busid_t *)arg, &p, sizeof(p)))
- return -EFAULT;
- return 0;
- }
- int DRM(getunique)(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_unique_t u;
- if (copy_from_user(&u, (drm_unique_t *)arg, sizeof(u)))
- return -EFAULT;
- if (u.unique_len >= dev->unique_len) {
- if (copy_to_user(u.unique, dev->unique, dev->unique_len))
- return -EFAULT;
- }
- u.unique_len = dev->unique_len;
- if (copy_to_user((drm_unique_t *)arg, &u, sizeof(u)))
- return -EFAULT;
- return 0;
- }
- int DRM(setunique)(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_unique_t u;
- if (dev->unique_len || dev->unique) return -EBUSY;
- if (copy_from_user(&u, (drm_unique_t *)arg, sizeof(u))) return -EFAULT;
- if (!u.unique_len || u.unique_len > 1024) return -EINVAL;
- dev->unique_len = u.unique_len;
- dev->unique = DRM(alloc)(u.unique_len + 1, DRM_MEM_DRIVER);
- if(!dev->unique) return -ENOMEM;
- if (copy_from_user(dev->unique, u.unique, dev->unique_len))
- return -EFAULT;
- dev->unique[dev->unique_len] = ' ';
- dev->devname = DRM(alloc)(strlen(dev->name) + strlen(dev->unique) + 2,
- DRM_MEM_DRIVER);
- if(!dev->devname) {
- DRM(free)(dev->devname, sizeof(*dev->devname), DRM_MEM_DRIVER);
- return -ENOMEM;
- }
- sprintf(dev->devname, "%s@%s", dev->name, dev->unique);
- do {
- struct pci_dev *pci_dev;
- int b, d, f;
- char *p;
-
- for(p = dev->unique; p && *p && *p != ':'; p++);
- if (!p || !*p) break;
- b = (int)simple_strtoul(p+1, &p, 10);
- if (*p != ':') break;
- d = (int)simple_strtoul(p+1, &p, 10);
- if (*p != ':') break;
- f = (int)simple_strtoul(p+1, &p, 10);
- if (*p) break;
-
- pci_dev = pci_find_slot(b, PCI_DEVFN(d,f));
- if (pci_dev) {
- dev->pdev = pci_dev;
- #ifdef __alpha__
- dev->hose = pci_dev->sysdata;
- #endif
- }
- } while(0);
- return 0;
- }
- int DRM(getmap)( 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_map_t map;
- drm_map_list_t *r_list = NULL;
- struct list_head *list;
- int idx;
- int i;
- if (copy_from_user(&map, (drm_map_t *)arg, sizeof(map)))
- return -EFAULT;
- idx = map.offset;
- down(&dev->struct_sem);
- if (idx < 0 || idx >= dev->map_count) {
- up(&dev->struct_sem);
- return -EINVAL;
- }
- i = 0;
- list_for_each(list, &dev->maplist->head) {
- if(i == idx) {
- r_list = (drm_map_list_t *)list;
- break;
- }
- i++;
- }
- if(!r_list || !r_list->map) {
- up(&dev->struct_sem);
- return -EINVAL;
- }
- map.offset = r_list->map->offset;
- map.size = r_list->map->size;
- map.type = r_list->map->type;
- map.flags = r_list->map->flags;
- map.handle = r_list->map->handle;
- map.mtrr = r_list->map->mtrr;
- up(&dev->struct_sem);
- if (copy_to_user((drm_map_t *)arg, &map, sizeof(map))) return -EFAULT;
- return 0;
- }
- int DRM(getclient)( 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_client_t client;
- drm_file_t *pt;
- int idx;
- int i;
- if (copy_from_user(&client, (drm_client_t *)arg, sizeof(client)))
- return -EFAULT;
- idx = client.idx;
- down(&dev->struct_sem);
- for (i = 0, pt = dev->file_first; i < idx && pt; i++, pt = pt->next)
- ;
- if (!pt) {
- up(&dev->struct_sem);
- return -EINVAL;
- }
- client.auth = pt->authenticated;
- client.pid = pt->pid;
- client.uid = pt->uid;
- client.magic = pt->magic;
- client.iocs = pt->ioctl_count;
- up(&dev->struct_sem);
- if (copy_to_user((drm_client_t *)arg, &client, sizeof(client)))
- return -EFAULT;
- return 0;
- }
- int DRM(getstats)( 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_stats_t stats;
- int i;
- memset(&stats, 0, sizeof(stats));
-
- down(&dev->struct_sem);
- for (i = 0; i < dev->counters; i++) {
- if (dev->types[i] == _DRM_STAT_LOCK)
- stats.data[i].value
- = (dev->lock.hw_lock
- ? dev->lock.hw_lock->lock : 0);
- else
- stats.data[i].value = atomic_read(&dev->counts[i]);
- stats.data[i].type = dev->types[i];
- }
-
- stats.count = dev->counters;
- up(&dev->struct_sem);
- if (copy_to_user((drm_stats_t *)arg, &stats, sizeof(stats)))
- return -EFAULT;
- return 0;
- }