1 | /* |
2 | * Kernel CAPI 2.0 Module - /proc/capi handling |
3 | * |
4 | * Copyright 1999 by Carsten Paeth <calle@calle.de> |
5 | * Copyright 2002 by Kai Germaschewski <kai@germaschewski.name> |
6 | * |
7 | * This software may be used and distributed according to the terms |
8 | * of the GNU General Public License, incorporated herein by reference. |
9 | * |
10 | */ |
11 | |
12 | |
13 | #include "kcapi.h" |
14 | #include <linux/proc_fs.h> |
15 | #include <linux/seq_file.h> |
16 | #include <linux/init.h> |
17 | #include <linux/export.h> |
18 | |
19 | static char *state2str(unsigned short state) |
20 | { |
21 | switch (state) { |
22 | case CAPI_CTR_DETECTED: return "detected" ; |
23 | case CAPI_CTR_LOADING: return "loading" ; |
24 | case CAPI_CTR_RUNNING: return "running" ; |
25 | default: return "???" ; |
26 | } |
27 | } |
28 | |
29 | // /proc/capi |
30 | // =========================================================================== |
31 | |
32 | // /proc/capi/controller: |
33 | // cnr driver cardstate name driverinfo |
34 | // /proc/capi/contrstats: |
35 | // cnr nrecvctlpkt nrecvdatapkt nsentctlpkt nsentdatapkt |
36 | // --------------------------------------------------------------------------- |
37 | |
38 | static void *controller_start(struct seq_file *seq, loff_t *pos) |
39 | __acquires(capi_controller_lock) |
40 | { |
41 | mutex_lock(&capi_controller_lock); |
42 | |
43 | if (*pos < CAPI_MAXCONTR) |
44 | return &capi_controller[*pos]; |
45 | |
46 | return NULL; |
47 | } |
48 | |
49 | static void *controller_next(struct seq_file *seq, void *v, loff_t *pos) |
50 | { |
51 | ++*pos; |
52 | if (*pos < CAPI_MAXCONTR) |
53 | return &capi_controller[*pos]; |
54 | |
55 | return NULL; |
56 | } |
57 | |
58 | static void controller_stop(struct seq_file *seq, void *v) |
59 | __releases(capi_controller_lock) |
60 | { |
61 | mutex_unlock(lock: &capi_controller_lock); |
62 | } |
63 | |
64 | static int controller_show(struct seq_file *seq, void *v) |
65 | { |
66 | struct capi_ctr *ctr = *(struct capi_ctr **) v; |
67 | |
68 | if (!ctr) |
69 | return 0; |
70 | |
71 | seq_printf(m: seq, fmt: "%d %-10s %-8s %-16s %s\n" , |
72 | ctr->cnr, ctr->driver_name, |
73 | state2str(state: ctr->state), |
74 | ctr->name, |
75 | ctr->procinfo ? ctr->procinfo(ctr) : "" ); |
76 | |
77 | return 0; |
78 | } |
79 | |
80 | static int contrstats_show(struct seq_file *seq, void *v) |
81 | { |
82 | struct capi_ctr *ctr = *(struct capi_ctr **) v; |
83 | |
84 | if (!ctr) |
85 | return 0; |
86 | |
87 | seq_printf(m: seq, fmt: "%d %lu %lu %lu %lu\n" , |
88 | ctr->cnr, |
89 | ctr->nrecvctlpkt, |
90 | ctr->nrecvdatapkt, |
91 | ctr->nsentctlpkt, |
92 | ctr->nsentdatapkt); |
93 | |
94 | return 0; |
95 | } |
96 | |
97 | static const struct seq_operations seq_controller_ops = { |
98 | .start = controller_start, |
99 | .next = controller_next, |
100 | .stop = controller_stop, |
101 | .show = controller_show, |
102 | }; |
103 | |
104 | static const struct seq_operations seq_contrstats_ops = { |
105 | .start = controller_start, |
106 | .next = controller_next, |
107 | .stop = controller_stop, |
108 | .show = contrstats_show, |
109 | }; |
110 | |
111 | // /proc/capi/applications: |
112 | // applid l3cnt dblkcnt dblklen #ncci recvqueuelen |
113 | // /proc/capi/applstats: |
114 | // applid nrecvctlpkt nrecvdatapkt nsentctlpkt nsentdatapkt |
115 | // --------------------------------------------------------------------------- |
116 | |
117 | static void *applications_start(struct seq_file *seq, loff_t *pos) |
118 | __acquires(capi_controller_lock) |
119 | { |
120 | mutex_lock(&capi_controller_lock); |
121 | |
122 | if (*pos < CAPI_MAXAPPL) |
123 | return &capi_applications[*pos]; |
124 | |
125 | return NULL; |
126 | } |
127 | |
128 | static void * |
129 | applications_next(struct seq_file *seq, void *v, loff_t *pos) |
130 | { |
131 | ++*pos; |
132 | if (*pos < CAPI_MAXAPPL) |
133 | return &capi_applications[*pos]; |
134 | |
135 | return NULL; |
136 | } |
137 | |
138 | static void applications_stop(struct seq_file *seq, void *v) |
139 | __releases(capi_controller_lock) |
140 | { |
141 | mutex_unlock(lock: &capi_controller_lock); |
142 | } |
143 | |
144 | static int |
145 | applications_show(struct seq_file *seq, void *v) |
146 | { |
147 | struct capi20_appl *ap = *(struct capi20_appl **) v; |
148 | |
149 | if (!ap) |
150 | return 0; |
151 | |
152 | seq_printf(m: seq, fmt: "%u %d %d %d\n" , |
153 | ap->applid, |
154 | ap->rparam.level3cnt, |
155 | ap->rparam.datablkcnt, |
156 | ap->rparam.datablklen); |
157 | |
158 | return 0; |
159 | } |
160 | |
161 | static int |
162 | applstats_show(struct seq_file *seq, void *v) |
163 | { |
164 | struct capi20_appl *ap = *(struct capi20_appl **) v; |
165 | |
166 | if (!ap) |
167 | return 0; |
168 | |
169 | seq_printf(m: seq, fmt: "%u %lu %lu %lu %lu\n" , |
170 | ap->applid, |
171 | ap->nrecvctlpkt, |
172 | ap->nrecvdatapkt, |
173 | ap->nsentctlpkt, |
174 | ap->nsentdatapkt); |
175 | |
176 | return 0; |
177 | } |
178 | |
179 | static const struct seq_operations seq_applications_ops = { |
180 | .start = applications_start, |
181 | .next = applications_next, |
182 | .stop = applications_stop, |
183 | .show = applications_show, |
184 | }; |
185 | |
186 | static const struct seq_operations seq_applstats_ops = { |
187 | .start = applications_start, |
188 | .next = applications_next, |
189 | .stop = applications_stop, |
190 | .show = applstats_show, |
191 | }; |
192 | |
193 | // --------------------------------------------------------------------------- |
194 | |
195 | /* /proc/capi/drivers is always empty */ |
196 | static ssize_t empty_read(struct file *file, char __user *buf, |
197 | size_t size, loff_t *off) |
198 | { |
199 | return 0; |
200 | } |
201 | |
202 | static const struct proc_ops empty_proc_ops = { |
203 | .proc_read = empty_read, |
204 | .proc_lseek = default_llseek, |
205 | }; |
206 | |
207 | // --------------------------------------------------------------------------- |
208 | |
209 | void __init |
210 | kcapi_proc_init(void) |
211 | { |
212 | proc_mkdir("capi" , NULL); |
213 | proc_mkdir("capi/controllers" , NULL); |
214 | proc_create_seq("capi/controller" , 0, NULL, &seq_controller_ops); |
215 | proc_create_seq("capi/contrstats" , 0, NULL, &seq_contrstats_ops); |
216 | proc_create_seq("capi/applications" , 0, NULL, &seq_applications_ops); |
217 | proc_create_seq("capi/applstats" , 0, NULL, &seq_applstats_ops); |
218 | proc_create(name: "capi/driver" , mode: 0, NULL, proc_ops: &empty_proc_ops); |
219 | } |
220 | |
221 | void |
222 | kcapi_proc_exit(void) |
223 | { |
224 | remove_proc_entry("capi/driver" , NULL); |
225 | remove_proc_entry("capi/controller" , NULL); |
226 | remove_proc_entry("capi/contrstats" , NULL); |
227 | remove_proc_entry("capi/applications" , NULL); |
228 | remove_proc_entry("capi/applstats" , NULL); |
229 | remove_proc_entry("capi/controllers" , NULL); |
230 | remove_proc_entry("capi" , NULL); |
231 | } |
232 | |