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/* ioctl.c -- IOCTL processing for DRM -*- linux-c -*-
* Created: Fri Jan 8 09:01:26 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* 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@precisioninsight.com>
*
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/ioctl.c,v 1.1 1999/09/25 14:38:01 dawes Exp $
*
*/
#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;
copy_from_user_ret(&p, (drm_irq_busid_t *)arg, sizeof(p), -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 %d\n",
p.busnum, p.devnum, p.funcnum, p.irq);
copy_to_user_ret((drm_irq_busid_t *)arg, &p, sizeof(p), -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;
copy_from_user_ret(&u, (drm_unique_t *)arg, sizeof(u), -EFAULT);
if (u.unique_len >= dev->unique_len) {
copy_to_user_ret(u.unique, dev->unique, dev->unique_len,
-EFAULT);
}
u.unique_len = dev->unique_len;
copy_to_user_ret((drm_unique_t *)arg, &u, sizeof(u), -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;
copy_from_user_ret(&u, (drm_unique_t *)arg, sizeof(u), -EFAULT);
if (!u.unique_len) return -EINVAL;
dev->unique_len = u.unique_len;
dev->unique = drm_alloc(u.unique_len + 1, DRM_MEM_DRIVER);
copy_from_user_ret(dev->unique, u.unique, dev->unique_len,
-EFAULT);
dev->unique[dev->unique_len] = '\0';
dev->devname = drm_alloc(strlen(dev->name) + strlen(dev->unique) + 2,
DRM_MEM_DRIVER);
sprintf(dev->devname, "%s@%s", dev->name, dev->unique);
return 0;
}
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