/*- * 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 * Gareth Hughes * */ /** @file drm_auth.c * Implementation of the get/authmagic ioctls implementing the authentication * scheme between the master and clients. */ #include "drmP.h" static int drm_hash_magic(drm_magic_t magic) { return magic & (DRM_HASH_SIZE-1); } /** * Returns the file private associated with the given magic number. */ static struct drm_file *drm_find_file(struct drm_device *dev, drm_magic_t magic) { drm_magic_entry_t *pt; int hash = drm_hash_magic(magic); DRM_SPINLOCK_ASSERT(&dev->dev_lock); for (pt = dev->magiclist[hash].head; pt; pt = pt->next) { if (pt->magic == magic) { return pt->priv; } } return NULL; } /** * Inserts the given magic number into the hash table of used magic number * lists. */ static int drm_add_magic(struct drm_device *dev, struct drm_file *priv, drm_magic_t magic) { int hash; drm_magic_entry_t *entry; DRM_DEBUG("%d\n", magic); DRM_SPINLOCK_ASSERT(&dev->dev_lock); hash = drm_hash_magic(magic); entry = malloc(sizeof(*entry), M_DRM, M_ZERO | M_NOWAIT); if (!entry) return ENOMEM; entry->magic = magic; entry->priv = priv; entry->next = NULL; if (dev->magiclist[hash].tail) { dev->magiclist[hash].tail->next = entry; dev->magiclist[hash].tail = entry; } else { dev->magiclist[hash].head = entry; dev->magiclist[hash].tail = entry; } return 0; } /** * Removes the given magic number from the hash table of used magic number * lists. */ static int drm_remove_magic(struct drm_device *dev, drm_magic_t magic) { drm_magic_entry_t *prev = NULL; drm_magic_entry_t *pt; int hash; DRM_SPINLOCK_ASSERT(&dev->dev_lock); DRM_DEBUG("%d\n", magic); hash = drm_hash_magic(magic); for (pt = dev->magiclist[hash].head; pt; prev = pt, pt = pt->next) { if (pt->magic == magic) { if (dev->magiclist[hash].head == pt) { dev->magiclist[hash].head = pt->next; } if (dev->magiclist[hash].tail == pt) { dev->magiclist[hash].tail = prev; } if (prev) { prev->next = pt->next; } free(pt, M_DRM); return 0; } } return EINVAL; } /** * Called by the client, this returns a unique magic number to be authorized * by the master. * * The master may use its own knowledge of the client (such as the X * connection that the magic is passed over) to determine if the magic number * should be authenticated. */ int drm_getmagic(struct drm_device *dev, void *data, struct drm_file *file_priv) { static drm_magic_t sequence = 0; struct drm_auth *auth = data; /* Find unique magic */ if (file_priv->magic) { auth->magic = file_priv->magic; } else { DRM_LOCK(); do { int old = sequence; auth->magic = old+1; if (!atomic_cmpset_int(&sequence, old, auth->magic)) continue; } while (drm_find_file(dev, auth->magic)); file_priv->magic = auth->magic; drm_add_magic(dev, file_priv, auth->magic); DRM_UNLOCK(); } DRM_DEBUG("%u\n", auth->magic); return 0; } /** * Marks the client associated with the given magic number as authenticated. */ int drm_authmagic(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_auth *auth = data; struct drm_file *priv; DRM_DEBUG("%u\n", auth->magic); DRM_LOCK(); priv = drm_find_file(dev, auth->magic); if (priv != NULL) { priv->authenticated = 1; drm_remove_magic(dev, auth->magic); DRM_UNLOCK(); return 0; } else { DRM_UNLOCK(); return EINVAL; } } d='n58' href='#n58'>58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 
/* savage_drv.c -- Savage DRI driver
 */
/*-
 * Copyright 2005 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"
#include "savage_drm.h"
#include "savage_drv.h"
#include "drm_pciids.h"

/* drv_PCI_IDs comes from drm_pciids.h, generated from drm_pciids.txt. */
static drm_pci_id_list_t savage_pciidlist[] = {
	savage_PCI_IDS
};

static void savage_configure(drm_device_t *dev)
{
	dev->driver.buf_priv_size	= sizeof(drm_savage_buf_priv_t);
	dev->driver.load		= savage_driver_load;
	dev->driver.firstopen		= savage_driver_firstopen;
	dev->driver.lastclose		= savage_driver_lastclose;
	dev->driver.unload		= savage_driver_unload;
	dev->driver.reclaim_buffers_locked = savage_reclaim_buffers;
	dev->driver.dma_ioctl		= savage_bci_buffers;

	dev->driver.ioctls		= savage_ioctls;
	dev->driver.max_ioctl		= savage_max_ioctl;

	dev->driver.name		= DRIVER_NAME;
	dev->driver.desc		= DRIVER_DESC;
	dev->driver.date		= DRIVER_DATE;
	dev->driver.major		= DRIVER_MAJOR;
	dev->driver.minor		= DRIVER_MINOR;
	dev->driver.patchlevel		= DRIVER_PATCHLEVEL;

	dev->driver.use_agp		= 1;
	dev->driver.use_mtrr		= 1;
	dev->driver.use_pci_dma		= 1;
	dev->driver.use_dma		= 1;
}

#ifdef __FreeBSD__
static int
savage_probe(device_t dev)
{
	return drm_probe(dev, savage_pciidlist);
}

static int
savage_attach(device_t nbdev)
{
	drm_device_t *dev = device_get_softc(nbdev);

	bzero(dev, sizeof(drm_device_t));
	savage_configure(dev);
	return drm_attach(nbdev, savage_pciidlist);
}

static device_method_t savage_methods[] = {
	/* Device interface */
	DEVMETHOD(device_probe,		savage_probe),
	DEVMETHOD(device_attach,	savage_attach),
	DEVMETHOD(device_detach,	drm_detach),

	{ 0, 0 }
};

static driver_t savage_driver = {
	"drm",
	savage_methods,
	sizeof(drm_device_t)
};

extern devclass_t drm_devclass;
#if __FreeBSD_version >= 700010
DRIVER_MODULE(savage, vgapci, savage_driver, drm_devclass, 0, 0);
#else
DRIVER_MODULE(savage, pci, savage_driver, drm_devclass, 0, 0);
#endif
MODULE_DEPEND(savage, drm, 1, 1, 1);

#elif defined(__NetBSD__) || defined(__OpenBSD__)
CFDRIVER_DECL(savage, DV_TTY, NULL);
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-12 13:06:26 +0000