xref: /freebsd/contrib/netbsd-tests/modules/k_uvm/k_uvm.c (revision 9268022b74279434ed6300244e3f977e56a8ceb5)
1*57718be8SEnji Cooper /*	$NetBSD: k_uvm.c,v 1.1 2012/02/17 22:36:50 jmmv Exp $	*/
2*57718be8SEnji Cooper /*
3*57718be8SEnji Cooper  * Copyright (c) 2012 The NetBSD Foundation, Inc.
4*57718be8SEnji Cooper  * All rights reserved.
5*57718be8SEnji Cooper  *
6*57718be8SEnji Cooper  * Redistribution and use in source and binary forms, with or without
7*57718be8SEnji Cooper  * modification, are permitted provided that the following conditions
8*57718be8SEnji Cooper  * are met:
9*57718be8SEnji Cooper  * 1. Redistributions of source code must retain the above copyright
10*57718be8SEnji Cooper  *    notice, this list of conditions and the following disclaimer.
11*57718be8SEnji Cooper  * 2. Redistributions in binary form must reproduce the above copyright
12*57718be8SEnji Cooper  *    notice, this list of conditions and the following disclaimer in the
13*57718be8SEnji Cooper  *    documentation and/or other materials provided with the distribution.
14*57718be8SEnji Cooper  *
15*57718be8SEnji Cooper  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
16*57718be8SEnji Cooper  * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
17*57718be8SEnji Cooper  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18*57718be8SEnji Cooper  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19*57718be8SEnji Cooper  * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
20*57718be8SEnji Cooper  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21*57718be8SEnji Cooper  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
22*57718be8SEnji Cooper  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23*57718be8SEnji Cooper  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
24*57718be8SEnji Cooper  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
25*57718be8SEnji Cooper  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
26*57718be8SEnji Cooper  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27*57718be8SEnji Cooper  */
28*57718be8SEnji Cooper 
29*57718be8SEnji Cooper #include <sys/cdefs.h>
30*57718be8SEnji Cooper __KERNEL_RCSID(0, "$NetBSD: k_uvm.c,v 1.1 2012/02/17 22:36:50 jmmv Exp $");
31*57718be8SEnji Cooper 
32*57718be8SEnji Cooper #include <sys/param.h>
33*57718be8SEnji Cooper #include <sys/kernel.h>
34*57718be8SEnji Cooper #include <sys/module.h>
35*57718be8SEnji Cooper #include <sys/sysctl.h>
36*57718be8SEnji Cooper 
37*57718be8SEnji Cooper MODULE(MODULE_CLASS_MISC, k_uvm, NULL);
38*57718be8SEnji Cooper 
39*57718be8SEnji Cooper /* --------------------------------------------------------------------- */
40*57718be8SEnji Cooper /* Sysctl interface to query information about the module.               */
41*57718be8SEnji Cooper /* --------------------------------------------------------------------- */
42*57718be8SEnji Cooper 
43*57718be8SEnji Cooper static struct sysctllog *clogp;
44*57718be8SEnji Cooper static int page_size;
45*57718be8SEnji Cooper 
46*57718be8SEnji Cooper #define K_UVM 0x12345678
47*57718be8SEnji Cooper #define K_UVM_VALUE 0
48*57718be8SEnji Cooper 
49*57718be8SEnji Cooper SYSCTL_SETUP(sysctl_k_uvm_setup, "sysctl k_uvm subtree setup")
50*57718be8SEnji Cooper {
51*57718be8SEnji Cooper 
52*57718be8SEnji Cooper 	sysctl_createv(clog, 0, NULL, NULL,
53*57718be8SEnji Cooper 	               CTLFLAG_PERMANENT,
54*57718be8SEnji Cooper 	               CTLTYPE_NODE, "k_uvm", NULL,
55*57718be8SEnji Cooper 	               NULL, 0, NULL, 0,
56*57718be8SEnji Cooper 	               CTL_VENDOR, K_UVM, CTL_EOL);
57*57718be8SEnji Cooper 
58*57718be8SEnji Cooper 	sysctl_createv(clog, 0, NULL, NULL,
59*57718be8SEnji Cooper 	               CTLFLAG_PERMANENT,
60*57718be8SEnji Cooper 	               CTLTYPE_INT, "page_size",
61*57718be8SEnji Cooper 		       SYSCTL_DESCR("Value of PAGE_SIZE"),
62*57718be8SEnji Cooper 		       NULL, 0, &page_size, 0,
63*57718be8SEnji Cooper 	               CTL_VENDOR, K_UVM, K_UVM_VALUE, CTL_EOL);
64*57718be8SEnji Cooper }
65*57718be8SEnji Cooper 
66*57718be8SEnji Cooper /* --------------------------------------------------------------------- */
67*57718be8SEnji Cooper /* Module management.                                                    */
68*57718be8SEnji Cooper /* --------------------------------------------------------------------- */
69*57718be8SEnji Cooper 
70*57718be8SEnji Cooper static
71*57718be8SEnji Cooper int
k_uvm_init(prop_dictionary_t props)72*57718be8SEnji Cooper k_uvm_init(prop_dictionary_t props)
73*57718be8SEnji Cooper {
74*57718be8SEnji Cooper 
75*57718be8SEnji Cooper 	page_size = PAGE_SIZE;
76*57718be8SEnji Cooper 
77*57718be8SEnji Cooper 	sysctl_k_uvm_setup(&clogp);
78*57718be8SEnji Cooper 
79*57718be8SEnji Cooper 	return 0;
80*57718be8SEnji Cooper }
81*57718be8SEnji Cooper 
82*57718be8SEnji Cooper static
83*57718be8SEnji Cooper int
k_uvm_fini(void * arg)84*57718be8SEnji Cooper k_uvm_fini(void *arg)
85*57718be8SEnji Cooper {
86*57718be8SEnji Cooper 
87*57718be8SEnji Cooper 	sysctl_teardown(&clogp);
88*57718be8SEnji Cooper 
89*57718be8SEnji Cooper 	return 0;
90*57718be8SEnji Cooper }
91*57718be8SEnji Cooper 
92*57718be8SEnji Cooper static
93*57718be8SEnji Cooper int
k_uvm_modcmd(modcmd_t cmd,void * arg)94*57718be8SEnji Cooper k_uvm_modcmd(modcmd_t cmd, void *arg)
95*57718be8SEnji Cooper {
96*57718be8SEnji Cooper 	int ret;
97*57718be8SEnji Cooper 
98*57718be8SEnji Cooper 	switch (cmd) {
99*57718be8SEnji Cooper 	case MODULE_CMD_INIT:
100*57718be8SEnji Cooper 		ret = k_uvm_init(arg);
101*57718be8SEnji Cooper 		break;
102*57718be8SEnji Cooper 
103*57718be8SEnji Cooper 	case MODULE_CMD_FINI:
104*57718be8SEnji Cooper 		ret = k_uvm_fini(arg);
105*57718be8SEnji Cooper 		break;
106*57718be8SEnji Cooper 
107*57718be8SEnji Cooper 	case MODULE_CMD_STAT:
108*57718be8SEnji Cooper 	default:
109*57718be8SEnji Cooper 		ret = ENOTTY;
110*57718be8SEnji Cooper 	}
111*57718be8SEnji Cooper 
112*57718be8SEnji Cooper 	return ret;
113*57718be8SEnji Cooper }
114