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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>

 */

#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) {

                DRM_ERROR("pci_find_slot failed for %d:%d:%d\n",

                          p.busnum, p.devnum, p.funcnum);

                p.irq = 0;

                goto out;

        }

        if (pci_enable_device(dev) != 0) {

                DRM_ERROR("pci_enable_device failed for %d:%d:%d\n",

                          p.busnum, p.devnum, p.funcnum);

                p.irq = 0;

                goto out;

        }

        p.irq = dev->irq;

 out:

        DRM_DEBUG("%d:%d:%d => IRQ %d\n",

                  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] = '\0';

        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 domain, 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;

                domain = b >> 8;

                b &= 0xff;

#ifdef __alpha__

                /*

                 * Find the hose the device is on (the domain number is the

                 * hose index) and offset the bus by the root bus of that

                 * hose.

                 */

                for(pci_dev = pci_find_device(PCI_ANY_ID,PCI_ANY_ID,NULL);

                    pci_dev;

                    pci_dev = pci_find_device(PCI_ANY_ID,PCI_ANY_ID,pci_dev)) {

                        struct pci_controller *hose = pci_dev->sysdata;

                        if (hose->index == domain) {

                                b += hose->bus->number;

                                break;

                        }

                }

#endif

                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;

}