1 /*
2 * Copyright (c) 2016 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29 #include <sys/sysctl.h>
30
31 extern kern_return_t test_pmap_enter_disconnect(unsigned int);
32 extern kern_return_t test_pmap_iommu_disconnect(void);
33 extern kern_return_t test_pmap_extended(void);
34 extern void test_pmap_call_overhead(unsigned int);
35 extern uint64_t test_pmap_page_protect_overhead(unsigned int, unsigned int);
36
37 static int
sysctl_test_pmap_enter_disconnect(__unused struct sysctl_oid * oidp,__unused void * arg1,__unused int arg2,struct sysctl_req * req)38 sysctl_test_pmap_enter_disconnect(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
39 {
40 unsigned int num_loops;
41 int error, changed;
42 error = sysctl_io_number(req, 0, sizeof(num_loops), &num_loops, &changed);
43 if (error || !changed) {
44 return error;
45 }
46 return test_pmap_enter_disconnect(num_loops);
47 }
48
49 SYSCTL_PROC(_kern, OID_AUTO, pmap_enter_disconnect_test,
50 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
51 0, 0, sysctl_test_pmap_enter_disconnect, "I", "");
52
53 static int
sysctl_test_pmap_iommu_disconnect(__unused struct sysctl_oid * oidp,__unused void * arg1,__unused int arg2,struct sysctl_req * req)54 sysctl_test_pmap_iommu_disconnect(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
55 {
56 unsigned int run = 0;
57 int error, changed;
58 error = sysctl_io_number(req, 0, sizeof(run), &run, &changed);
59 if (error || !changed) {
60 return error;
61 }
62 return test_pmap_iommu_disconnect();
63 }
64
65 SYSCTL_PROC(_kern, OID_AUTO, pmap_iommu_disconnect_test,
66 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
67 0, 0, sysctl_test_pmap_iommu_disconnect, "I", "");
68
69 static int
sysctl_test_pmap_extended(__unused struct sysctl_oid * oidp,__unused void * arg1,__unused int arg2,struct sysctl_req * req)70 sysctl_test_pmap_extended(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
71 {
72 unsigned int run = 0;
73 int error, changed;
74 error = sysctl_io_number(req, 0, sizeof(run), &run, &changed);
75 if (error || !changed) {
76 return error;
77 }
78 return test_pmap_extended();
79 }
80
81 SYSCTL_PROC(_kern, OID_AUTO, pmap_extended_test,
82 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
83 0, 0, sysctl_test_pmap_extended, "I", "");
84
85 static int
sysctl_test_pmap_call_overhead(__unused struct sysctl_oid * oidp,__unused void * arg1,__unused int arg2,struct sysctl_req * req)86 sysctl_test_pmap_call_overhead(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
87 {
88 unsigned int num_loops;
89 int error, changed;
90 error = sysctl_io_number(req, 0, sizeof(num_loops), &num_loops, &changed);
91 if (error || !changed) {
92 return error;
93 }
94 test_pmap_call_overhead(num_loops);
95 return 0;
96 }
97
98 SYSCTL_PROC(_kern, OID_AUTO, pmap_call_overhead_test,
99 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
100 0, 0, sysctl_test_pmap_call_overhead, "I", "");
101
102 static int
sysctl_test_pmap_page_protect_overhead(__unused struct sysctl_oid * oidp,__unused void * arg1,__unused int arg2,struct sysctl_req * req)103 sysctl_test_pmap_page_protect_overhead(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
104 {
105 struct {
106 unsigned int num_loops;
107 unsigned int num_aliases;
108 } ppo_in;
109
110 int error;
111 uint64_t duration;
112
113 error = SYSCTL_IN(req, &ppo_in, sizeof(ppo_in));
114 if (error) {
115 return error;
116 }
117
118 duration = test_pmap_page_protect_overhead(ppo_in.num_loops, ppo_in.num_aliases);
119 error = SYSCTL_OUT(req, &duration, sizeof(duration));
120 return error;
121 }
122
123 SYSCTL_PROC(_kern, OID_AUTO, pmap_page_protect_overhead_test,
124 CTLTYPE_OPAQUE | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_test_pmap_page_protect_overhead, "-", "");
125