linux/i810_drv.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55

/* i810_drv.c -- I810 driver -*- linux-c -*-
 * Created: Mon Dec 13 01:56:22 1999 by jhartmann@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
 * 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>
 *    Jeff Hartmann <jhartmann@valinux.com>
 *    Gareth Hughes <gareth@valinux.com>
 */

#include <linux/config.h>
#include "i810.h"
#include "drmP.h"
#include "drm.h"
#include "i810_drm.h"
#include "i810_drv.h"

#include "drm_agpsupport.h"
#include "drm_auth.h"
#include "drm_bufs.h"
#include "drm_context.h"
#include "drm_dma.h"
#include "drm_drawable.h"
#include "drm_drv.h"

#include "drm_fops.h"
#include "drm_init.h"
#include "drm_ioctl.h"
#include "drm_lock.h"
#include "drm_memory.h"
#include "drm_proc.h"
#include "drm_vm.h"
#include "drm_stub.h"
/* drm_irq.c -- IRQ IOCTL and function support
 * Created: Fri Oct 18 2003 by anholt@FreeBSD.org
 */
/*-
 * Copyright 2003 Eric Anholt
 * 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
 * ERIC ANHOLT 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:
 *    Eric Anholt <anholt@FreeBSD.org>
 *
 */

#include "drmP.h"
#include "drm.h"

int drm_irq_by_busid(DRM_IOCTL_ARGS)
{
	DRM_DEVICE;
	drm_irq_busid_t irq;

	DRM_COPY_FROM_USER_IOCTL(irq, (drm_irq_busid_t *)data, sizeof(irq));

	if ((irq.busnum >> 8) != dev->pci_domain ||
	    (irq.busnum & 0xff) != dev->pci_bus ||
	    irq.devnum != dev->pci_slot ||
	    irq.funcnum != dev->pci_func)
		return EINVAL;

	irq.irq = dev->irq;

	DRM_DEBUG("%d:%d:%d => IRQ %d\n",
		  irq.busnum, irq.devnum, irq.funcnum, irq.irq);

	DRM_COPY_TO_USER_IOCTL( (drm_irq_busid_t *)data, irq, sizeof(irq) );

	return 0;
}

#if defined(__FreeBSD__) && __FreeBSD_version >= 500000
static irqreturn_t
drm_irq_handler_wrap(DRM_IRQ_ARGS)
{
	drm_device_t *dev = (drm_device_t *)arg;

	DRM_SPINLOCK(&dev->irq_lock);
	dev->driver.irq_handler(arg);
	DRM_SPINUNLOCK(&dev->irq_lock);
}
#endif

int drm_irq_install(drm_device_t *dev)
{
	int retcode;
#ifdef __NetBSD__
	pci_intr_handle_t ih;
#endif

	if (dev->irq == 0 || dev->dev_private == NULL)
		return DRM_ERR(EINVAL);

	DRM_DEBUG( "%s: irq=%d\n", __FUNCTION__, dev->irq );

	DRM_LOCK();
	if (dev->irq_enabled) {
		DRM_UNLOCK();
		return DRM_ERR(EBUSY);
	}
	dev->irq_enabled = 1;

	dev->context_flag = 0;

	DRM_SPININIT(dev->irq_lock, "DRM IRQ lock");

				/* Before installing handler */
	dev->driver.irq_preinstall(dev);
	DRM_UNLOCK();

				/* Install handler */
#ifdef __FreeBSD__
	dev->irqrid = 0;
	dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ, 
				      &dev->irqrid, RF_SHAREABLE);
	if (!dev->irqr) {
		retcode = ENOENT;
		goto err;
	}
#if __FreeBSD_version >= 700031
	retcode = bus_setup_intr(dev->device, dev->irqr,
				 INTR_TYPE_TTY | INTR_MPSAFE,
				 NULL, drm_irq_handler_wrap, dev, &dev->irqh);
#else
	retcode = bus_setup_intr(dev->device, dev->irqr,
				 INTR_TYPE_TTY | INTR_MPSAFE,
				 drm_irq_handler_wrap, dev, &dev->irqh);
#endif
	if (retcode != 0)
		goto err;
#elif defined(__NetBSD__) || defined(__OpenBSD__)
	if (pci_intr_map(&dev->pa, &ih) != 0) {
		retcode = ENOENT;
		goto err;
	}
	dev->irqh = pci_intr_establish(&dev->pa.pa_pc, ih, IPL_TTY,
	    (irqreturn_t (*)(void *))dev->irq_handler, dev);
	if (!dev->irqh) {
		retcode = ENOENT;
		goto err;
	}
#endif

				/* After installing handler */
	DRM_LOCK();
	dev->driver.irq_postinstall(dev);
	DRM_UNLOCK();

	return 0;
err:
	DRM_LOCK();
	dev->irq_enabled = 0;
#ifdef ___FreeBSD__
	if (dev->irqrid != 0) {
		bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid,
		    dev->irqr);
		dev->irqrid = 0;
	}
#endif
	DRM_SPINUNINIT(dev->irq_lock);
	DRM_UNLOCK();
	return retcode;
}

int drm_irq_uninstall(drm_device_t *dev)
{
#ifdef __FreeBSD__
	int irqrid;
#endif

	if (!dev->irq_enabled)
		return DRM_ERR(EINVAL);

	dev->irq_enabled = 0;
#ifdef __FreeBSD__
	irqrid = dev->irqrid;
	dev->irqrid = 0;
#endif

	DRM_DEBUG( "%s: irq=%d\n", __FUNCTION__, dev->irq );

	dev->driver.irq_uninstall(dev);