5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 * Copyright 2018 Joyent, Inc.
26 */
27
28 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
29 /* All Rights Reserved */
30
31 /*
32 * University Copyright- Copyright (c) 1982, 1986, 1988
33 * The Regents of the University of California
34 * All Rights Reserved
35 *
36 * University Acknowledgment- Portions of this document are derived from
37 * software developed by the University of California, Berkeley, and its
38 * contributors.
39 */
40
41 /*
42 * VM - segment of a mapped device.
43 *
44 * This segment driver is used when mapping character special devices.
45 */
3971 * if cookie is NULL, no effects on the system
3972 */
3973 if (cookie == NULL)
3974 return;
3975
3976 cp = (struct ddi_umem_cookie *)cookie;
3977
3978 switch (cp->type) {
3979 case KMEM_PAGEABLE :
3980 ASSERT(cp->cvaddr != NULL && cp->size != 0);
3981 /*
3982 * Check if there are still any pending faults on the cookie
3983 * while the driver is deleting it,
3984 * XXX - could change to an ASSERT but wont catch errant drivers
3985 */
3986 mutex_enter(&cp->lock);
3987 if (cp->locked) {
3988 mutex_exit(&cp->lock);
3989 panic("ddi_umem_free for cookie with pending faults %p",
3990 (void *)cp);
3991 return;
3992 }
3993
3994 segkp_release(segkp, cp->cvaddr);
3995
3996 /*
3997 * release mutex associated with this cookie.
3998 */
3999 mutex_destroy(&cp->lock);
4000 break;
4001 case KMEM_NON_PAGEABLE :
4002 ASSERT(cp->cvaddr != NULL && cp->size != 0);
4003 devmap_umem_free_np(cp->cvaddr, cp->size);
4004 break;
4005 case UMEM_TRASH :
4006 break;
4007 case UMEM_LOCKED :
4008 /* Callers should use ddi_umem_unlock for this type */
4009 ddi_umem_unlock(cookie);
4010 /* Frees the cookie too */
4011 return;
|
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 * Copyright 2019 Joyent, Inc.
26 */
27
28 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
29 /* All Rights Reserved */
30
31 /*
32 * University Copyright- Copyright (c) 1982, 1986, 1988
33 * The Regents of the University of California
34 * All Rights Reserved
35 *
36 * University Acknowledgment- Portions of this document are derived from
37 * software developed by the University of California, Berkeley, and its
38 * contributors.
39 */
40
41 /*
42 * VM - segment of a mapped device.
43 *
44 * This segment driver is used when mapping character special devices.
45 */
3971 * if cookie is NULL, no effects on the system
3972 */
3973 if (cookie == NULL)
3974 return;
3975
3976 cp = (struct ddi_umem_cookie *)cookie;
3977
3978 switch (cp->type) {
3979 case KMEM_PAGEABLE :
3980 ASSERT(cp->cvaddr != NULL && cp->size != 0);
3981 /*
3982 * Check if there are still any pending faults on the cookie
3983 * while the driver is deleting it,
3984 * XXX - could change to an ASSERT but wont catch errant drivers
3985 */
3986 mutex_enter(&cp->lock);
3987 if (cp->locked) {
3988 mutex_exit(&cp->lock);
3989 panic("ddi_umem_free for cookie with pending faults %p",
3990 (void *)cp);
3991 }
3992
3993 segkp_release(segkp, cp->cvaddr);
3994
3995 /*
3996 * release mutex associated with this cookie.
3997 */
3998 mutex_destroy(&cp->lock);
3999 break;
4000 case KMEM_NON_PAGEABLE :
4001 ASSERT(cp->cvaddr != NULL && cp->size != 0);
4002 devmap_umem_free_np(cp->cvaddr, cp->size);
4003 break;
4004 case UMEM_TRASH :
4005 break;
4006 case UMEM_LOCKED :
4007 /* Callers should use ddi_umem_unlock for this type */
4008 ddi_umem_unlock(cookie);
4009 /* Frees the cookie too */
4010 return;
|