1*1cf12d02Sjmmv /* $NetBSD: k_uvm.c,v 1.1 2012/02/17 22:36:50 jmmv Exp $ */
2*1cf12d02Sjmmv /*
3*1cf12d02Sjmmv * Copyright (c) 2012 The NetBSD Foundation, Inc.
4*1cf12d02Sjmmv * All rights reserved.
5*1cf12d02Sjmmv *
6*1cf12d02Sjmmv * Redistribution and use in source and binary forms, with or without
7*1cf12d02Sjmmv * modification, are permitted provided that the following conditions
8*1cf12d02Sjmmv * are met:
9*1cf12d02Sjmmv * 1. Redistributions of source code must retain the above copyright
10*1cf12d02Sjmmv * notice, this list of conditions and the following disclaimer.
11*1cf12d02Sjmmv * 2. Redistributions in binary form must reproduce the above copyright
12*1cf12d02Sjmmv * notice, this list of conditions and the following disclaimer in the
13*1cf12d02Sjmmv * documentation and/or other materials provided with the distribution.
14*1cf12d02Sjmmv *
15*1cf12d02Sjmmv * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
16*1cf12d02Sjmmv * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
17*1cf12d02Sjmmv * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18*1cf12d02Sjmmv * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19*1cf12d02Sjmmv * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
20*1cf12d02Sjmmv * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21*1cf12d02Sjmmv * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
22*1cf12d02Sjmmv * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23*1cf12d02Sjmmv * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
24*1cf12d02Sjmmv * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
25*1cf12d02Sjmmv * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
26*1cf12d02Sjmmv * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27*1cf12d02Sjmmv */
28*1cf12d02Sjmmv
29*1cf12d02Sjmmv #include <sys/cdefs.h>
30*1cf12d02Sjmmv __KERNEL_RCSID(0, "$NetBSD: k_uvm.c,v 1.1 2012/02/17 22:36:50 jmmv Exp $");
31*1cf12d02Sjmmv
32*1cf12d02Sjmmv #include <sys/param.h>
33*1cf12d02Sjmmv #include <sys/kernel.h>
34*1cf12d02Sjmmv #include <sys/module.h>
35*1cf12d02Sjmmv #include <sys/sysctl.h>
36*1cf12d02Sjmmv
37*1cf12d02Sjmmv MODULE(MODULE_CLASS_MISC, k_uvm, NULL);
38*1cf12d02Sjmmv
39*1cf12d02Sjmmv /* --------------------------------------------------------------------- */
40*1cf12d02Sjmmv /* Sysctl interface to query information about the module. */
41*1cf12d02Sjmmv /* --------------------------------------------------------------------- */
42*1cf12d02Sjmmv
43*1cf12d02Sjmmv static struct sysctllog *clogp;
44*1cf12d02Sjmmv static int page_size;
45*1cf12d02Sjmmv
46*1cf12d02Sjmmv #define K_UVM 0x12345678
47*1cf12d02Sjmmv #define K_UVM_VALUE 0
48*1cf12d02Sjmmv
49*1cf12d02Sjmmv SYSCTL_SETUP(sysctl_k_uvm_setup, "sysctl k_uvm subtree setup")
50*1cf12d02Sjmmv {
51*1cf12d02Sjmmv
52*1cf12d02Sjmmv sysctl_createv(clog, 0, NULL, NULL,
53*1cf12d02Sjmmv CTLFLAG_PERMANENT,
54*1cf12d02Sjmmv CTLTYPE_NODE, "k_uvm", NULL,
55*1cf12d02Sjmmv NULL, 0, NULL, 0,
56*1cf12d02Sjmmv CTL_VENDOR, K_UVM, CTL_EOL);
57*1cf12d02Sjmmv
58*1cf12d02Sjmmv sysctl_createv(clog, 0, NULL, NULL,
59*1cf12d02Sjmmv CTLFLAG_PERMANENT,
60*1cf12d02Sjmmv CTLTYPE_INT, "page_size",
61*1cf12d02Sjmmv SYSCTL_DESCR("Value of PAGE_SIZE"),
62*1cf12d02Sjmmv NULL, 0, &page_size, 0,
63*1cf12d02Sjmmv CTL_VENDOR, K_UVM, K_UVM_VALUE, CTL_EOL);
64*1cf12d02Sjmmv }
65*1cf12d02Sjmmv
66*1cf12d02Sjmmv /* --------------------------------------------------------------------- */
67*1cf12d02Sjmmv /* Module management. */
68*1cf12d02Sjmmv /* --------------------------------------------------------------------- */
69*1cf12d02Sjmmv
70*1cf12d02Sjmmv static
71*1cf12d02Sjmmv int
k_uvm_init(prop_dictionary_t props)72*1cf12d02Sjmmv k_uvm_init(prop_dictionary_t props)
73*1cf12d02Sjmmv {
74*1cf12d02Sjmmv
75*1cf12d02Sjmmv page_size = PAGE_SIZE;
76*1cf12d02Sjmmv
77*1cf12d02Sjmmv sysctl_k_uvm_setup(&clogp);
78*1cf12d02Sjmmv
79*1cf12d02Sjmmv return 0;
80*1cf12d02Sjmmv }
81*1cf12d02Sjmmv
82*1cf12d02Sjmmv static
83*1cf12d02Sjmmv int
k_uvm_fini(void * arg)84*1cf12d02Sjmmv k_uvm_fini(void *arg)
85*1cf12d02Sjmmv {
86*1cf12d02Sjmmv
87*1cf12d02Sjmmv sysctl_teardown(&clogp);
88*1cf12d02Sjmmv
89*1cf12d02Sjmmv return 0;
90*1cf12d02Sjmmv }
91*1cf12d02Sjmmv
92*1cf12d02Sjmmv static
93*1cf12d02Sjmmv int
k_uvm_modcmd(modcmd_t cmd,void * arg)94*1cf12d02Sjmmv k_uvm_modcmd(modcmd_t cmd, void *arg)
95*1cf12d02Sjmmv {
96*1cf12d02Sjmmv int ret;
97*1cf12d02Sjmmv
98*1cf12d02Sjmmv switch (cmd) {
99*1cf12d02Sjmmv case MODULE_CMD_INIT:
100*1cf12d02Sjmmv ret = k_uvm_init(arg);
101*1cf12d02Sjmmv break;
102*1cf12d02Sjmmv
103*1cf12d02Sjmmv case MODULE_CMD_FINI:
104*1cf12d02Sjmmv ret = k_uvm_fini(arg);
105*1cf12d02Sjmmv break;
106*1cf12d02Sjmmv
107*1cf12d02Sjmmv case MODULE_CMD_STAT:
108*1cf12d02Sjmmv default:
109*1cf12d02Sjmmv ret = ENOTTY;
110*1cf12d02Sjmmv }
111*1cf12d02Sjmmv
112*1cf12d02Sjmmv return ret;
113*1cf12d02Sjmmv }
114