92 lines
3.3 KiB
C
92 lines
3.3 KiB
C
/* ioctl.c -- IOCTL processing for DRM -*- linux-c -*-
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* Created: Fri Jan 8 09:01:26 1999 by faith@precisioninsight.com
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* Revised: Fri Aug 20 09:27:02 1999 by faith@precisioninsight.com
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*
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* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/ioctl.c,v 1.3 1999/08/30 13:05:00 faith Exp $
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* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/ioctl.c,v 1.1 1999/09/25 14:38:01 dawes Exp $
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*
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*/
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#define __NO_VERSION__
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#include "drmP.h"
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int drm_irq_busid(struct inode *inode, struct file *filp, unsigned int cmd,
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unsigned long arg)
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{
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drm_irq_busid_t p;
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struct pci_dev *dev;
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copy_from_user_ret(&p, (drm_irq_busid_t *)arg, sizeof(p), -EFAULT);
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dev = pci_find_slot(p.busnum, PCI_DEVFN(p.devnum, p.funcnum));
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if (dev) p.irq = dev->irq;
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else p.irq = 0;
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DRM_DEBUG("%d:%d:%d => IRQ %d\n",
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p.busnum, p.devnum, p.funcnum, p.irq);
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copy_to_user_ret((drm_irq_busid_t *)arg, &p, sizeof(p), -EFAULT);
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return 0;
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}
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int drm_getunique(struct inode *inode, struct file *filp, unsigned int cmd,
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unsigned long arg)
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{
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drm_file_t *priv = filp->private_data;
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drm_device_t *dev = priv->dev;
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drm_unique_t u;
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copy_from_user_ret(&u, (drm_unique_t *)arg, sizeof(u), -EFAULT);
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if (u.unique_len >= dev->unique_len) {
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copy_to_user_ret(u.unique, dev->unique, dev->unique_len,
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-EFAULT);
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}
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u.unique_len = dev->unique_len;
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copy_to_user_ret((drm_unique_t *)arg, &u, sizeof(u), -EFAULT);
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return 0;
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}
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int drm_setunique(struct inode *inode, struct file *filp, unsigned int cmd,
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unsigned long arg)
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{
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drm_file_t *priv = filp->private_data;
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drm_device_t *dev = priv->dev;
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drm_unique_t u;
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if (dev->unique_len || dev->unique) return -EBUSY;
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copy_from_user_ret(&u, (drm_unique_t *)arg, sizeof(u), -EFAULT);
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if (!u.unique_len) return -EINVAL;
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dev->unique_len = u.unique_len;
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dev->unique = drm_alloc(u.unique_len + 1, DRM_MEM_DRIVER);
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copy_from_user_ret(dev->unique, u.unique, dev->unique_len,
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-EFAULT);
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dev->unique[dev->unique_len] = '\0';
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dev->devname = drm_alloc(strlen(dev->name) + strlen(dev->unique) + 2,
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DRM_MEM_DRIVER);
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sprintf(dev->devname, "%s@%s", dev->name, dev->unique);
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return 0;
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}
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