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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
e6186309 RD |
2 | #include <stdio.h> |
3 | #include <stdlib.h> | |
4 | #include <unistd.h> | |
5 | #include <fcntl.h> | |
6 | #include <string.h> | |
7 | #include <memory.h> | |
8 | #include <malloc.h> | |
9 | #include <time.h> | |
10 | #include <ctype.h> | |
11 | #include <sys/types.h> | |
12 | #include <sys/wait.h> | |
13 | #include <signal.h> | |
e6186309 RD |
14 | #include <errno.h> |
15 | #include <sys/time.h> | |
16 | #include <linux/hpet.h> | |
17 | ||
18 | ||
19 | extern void hpet_open_close(int, const char **); | |
20 | extern void hpet_info(int, const char **); | |
21 | extern void hpet_poll(int, const char **); | |
22 | extern void hpet_fasync(int, const char **); | |
23 | extern void hpet_read(int, const char **); | |
24 | ||
25 | #include <sys/poll.h> | |
26 | #include <sys/ioctl.h> | |
e6186309 RD |
27 | |
28 | struct hpet_command { | |
29 | char *command; | |
30 | void (*func)(int argc, const char ** argv); | |
31 | } hpet_command[] = { | |
32 | { | |
33 | "open-close", | |
34 | hpet_open_close | |
35 | }, | |
36 | { | |
37 | "info", | |
38 | hpet_info | |
39 | }, | |
40 | { | |
41 | "poll", | |
42 | hpet_poll | |
43 | }, | |
44 | { | |
45 | "fasync", | |
46 | hpet_fasync | |
47 | }, | |
48 | }; | |
49 | ||
50 | int | |
51 | main(int argc, const char ** argv) | |
52 | { | |
f0cd147e | 53 | unsigned int i; |
e6186309 RD |
54 | |
55 | argc--; | |
56 | argv++; | |
57 | ||
58 | if (!argc) { | |
59 | fprintf(stderr, "-hpet: requires command\n"); | |
60 | return -1; | |
61 | } | |
62 | ||
63 | ||
64 | for (i = 0; i < (sizeof (hpet_command) / sizeof (hpet_command[0])); i++) | |
65 | if (!strcmp(argv[0], hpet_command[i].command)) { | |
66 | argc--; | |
67 | argv++; | |
68 | fprintf(stderr, "-hpet: executing %s\n", | |
69 | hpet_command[i].command); | |
70 | hpet_command[i].func(argc, argv); | |
71 | return 0; | |
72 | } | |
73 | ||
74 | fprintf(stderr, "do_hpet: command %s not implemented\n", argv[0]); | |
75 | ||
76 | return -1; | |
77 | } | |
78 | ||
79 | void | |
80 | hpet_open_close(int argc, const char **argv) | |
81 | { | |
82 | int fd; | |
83 | ||
84 | if (argc != 1) { | |
85 | fprintf(stderr, "hpet_open_close: device-name\n"); | |
86 | return; | |
87 | } | |
88 | ||
89 | fd = open(argv[0], O_RDONLY); | |
90 | if (fd < 0) | |
91 | fprintf(stderr, "hpet_open_close: open failed\n"); | |
92 | else | |
93 | close(fd); | |
94 | ||
95 | return; | |
96 | } | |
97 | ||
98 | void | |
99 | hpet_info(int argc, const char **argv) | |
100 | { | |
aaaddfe0 JSR |
101 | struct hpet_info info; |
102 | int fd; | |
103 | ||
104 | if (argc != 1) { | |
105 | fprintf(stderr, "hpet_info: device-name\n"); | |
106 | return; | |
107 | } | |
108 | ||
109 | fd = open(argv[0], O_RDONLY); | |
110 | if (fd < 0) { | |
111 | fprintf(stderr, "hpet_info: open of %s failed\n", argv[0]); | |
112 | return; | |
113 | } | |
114 | ||
115 | if (ioctl(fd, HPET_INFO, &info) < 0) { | |
116 | fprintf(stderr, "hpet_info: failed to get info\n"); | |
117 | goto out; | |
118 | } | |
119 | ||
120 | fprintf(stderr, "hpet_info: hi_irqfreq 0x%lx hi_flags 0x%lx ", | |
121 | info.hi_ireqfreq, info.hi_flags); | |
122 | fprintf(stderr, "hi_hpet %d hi_timer %d\n", | |
123 | info.hi_hpet, info.hi_timer); | |
124 | ||
125 | out: | |
126 | close(fd); | |
127 | return; | |
e6186309 RD |
128 | } |
129 | ||
130 | void | |
131 | hpet_poll(int argc, const char **argv) | |
132 | { | |
133 | unsigned long freq; | |
134 | int iterations, i, fd; | |
135 | struct pollfd pfd; | |
136 | struct hpet_info info; | |
137 | struct timeval stv, etv; | |
138 | struct timezone tz; | |
139 | long usec; | |
140 | ||
141 | if (argc != 3) { | |
142 | fprintf(stderr, "hpet_poll: device-name freq iterations\n"); | |
143 | return; | |
144 | } | |
145 | ||
146 | freq = atoi(argv[1]); | |
147 | iterations = atoi(argv[2]); | |
148 | ||
149 | fd = open(argv[0], O_RDONLY); | |
150 | ||
151 | if (fd < 0) { | |
152 | fprintf(stderr, "hpet_poll: open of %s failed\n", argv[0]); | |
153 | return; | |
154 | } | |
155 | ||
156 | if (ioctl(fd, HPET_IRQFREQ, freq) < 0) { | |
157 | fprintf(stderr, "hpet_poll: HPET_IRQFREQ failed\n"); | |
158 | goto out; | |
159 | } | |
160 | ||
161 | if (ioctl(fd, HPET_INFO, &info) < 0) { | |
162 | fprintf(stderr, "hpet_poll: failed to get info\n"); | |
163 | goto out; | |
164 | } | |
165 | ||
166 | fprintf(stderr, "hpet_poll: info.hi_flags 0x%lx\n", info.hi_flags); | |
167 | ||
168 | if (info.hi_flags && (ioctl(fd, HPET_EPI, 0) < 0)) { | |
169 | fprintf(stderr, "hpet_poll: HPET_EPI failed\n"); | |
170 | goto out; | |
171 | } | |
172 | ||
173 | if (ioctl(fd, HPET_IE_ON, 0) < 0) { | |
174 | fprintf(stderr, "hpet_poll, HPET_IE_ON failed\n"); | |
175 | goto out; | |
176 | } | |
177 | ||
178 | pfd.fd = fd; | |
179 | pfd.events = POLLIN; | |
180 | ||
181 | for (i = 0; i < iterations; i++) { | |
182 | pfd.revents = 0; | |
183 | gettimeofday(&stv, &tz); | |
184 | if (poll(&pfd, 1, -1) < 0) | |
185 | fprintf(stderr, "hpet_poll: poll failed\n"); | |
186 | else { | |
187 | long data; | |
188 | ||
189 | gettimeofday(&etv, &tz); | |
190 | usec = stv.tv_sec * 1000000 + stv.tv_usec; | |
191 | usec = (etv.tv_sec * 1000000 + etv.tv_usec) - usec; | |
192 | ||
193 | fprintf(stderr, | |
194 | "hpet_poll: expired time = 0x%lx\n", usec); | |
195 | ||
196 | fprintf(stderr, "hpet_poll: revents = 0x%x\n", | |
197 | pfd.revents); | |
198 | ||
199 | if (read(fd, &data, sizeof(data)) != sizeof(data)) { | |
200 | fprintf(stderr, "hpet_poll: read failed\n"); | |
201 | } | |
202 | else | |
203 | fprintf(stderr, "hpet_poll: data 0x%lx\n", | |
204 | data); | |
205 | } | |
206 | } | |
207 | ||
208 | out: | |
209 | close(fd); | |
210 | return; | |
211 | } | |
212 | ||
213 | static int hpet_sigio_count; | |
214 | ||
215 | static void | |
216 | hpet_sigio(int val) | |
217 | { | |
218 | fprintf(stderr, "hpet_sigio: called\n"); | |
219 | hpet_sigio_count++; | |
220 | } | |
221 | ||
222 | void | |
223 | hpet_fasync(int argc, const char **argv) | |
224 | { | |
225 | unsigned long freq; | |
226 | int iterations, i, fd, value; | |
227 | sig_t oldsig; | |
228 | struct hpet_info info; | |
229 | ||
230 | hpet_sigio_count = 0; | |
231 | fd = -1; | |
232 | ||
233 | if ((oldsig = signal(SIGIO, hpet_sigio)) == SIG_ERR) { | |
234 | fprintf(stderr, "hpet_fasync: failed to set signal handler\n"); | |
235 | return; | |
236 | } | |
237 | ||
238 | if (argc != 3) { | |
239 | fprintf(stderr, "hpet_fasync: device-name freq iterations\n"); | |
240 | goto out; | |
241 | } | |
242 | ||
243 | fd = open(argv[0], O_RDONLY); | |
244 | ||
245 | if (fd < 0) { | |
246 | fprintf(stderr, "hpet_fasync: failed to open %s\n", argv[0]); | |
247 | return; | |
248 | } | |
249 | ||
250 | ||
251 | if ((fcntl(fd, F_SETOWN, getpid()) == 1) || | |
252 | ((value = fcntl(fd, F_GETFL)) == 1) || | |
253 | (fcntl(fd, F_SETFL, value | O_ASYNC) == 1)) { | |
254 | fprintf(stderr, "hpet_fasync: fcntl failed\n"); | |
255 | goto out; | |
256 | } | |
257 | ||
258 | freq = atoi(argv[1]); | |
259 | iterations = atoi(argv[2]); | |
260 | ||
261 | if (ioctl(fd, HPET_IRQFREQ, freq) < 0) { | |
262 | fprintf(stderr, "hpet_fasync: HPET_IRQFREQ failed\n"); | |
263 | goto out; | |
264 | } | |
265 | ||
266 | if (ioctl(fd, HPET_INFO, &info) < 0) { | |
267 | fprintf(stderr, "hpet_fasync: failed to get info\n"); | |
268 | goto out; | |
269 | } | |
270 | ||
271 | fprintf(stderr, "hpet_fasync: info.hi_flags 0x%lx\n", info.hi_flags); | |
272 | ||
273 | if (info.hi_flags && (ioctl(fd, HPET_EPI, 0) < 0)) { | |
274 | fprintf(stderr, "hpet_fasync: HPET_EPI failed\n"); | |
275 | goto out; | |
276 | } | |
277 | ||
278 | if (ioctl(fd, HPET_IE_ON, 0) < 0) { | |
279 | fprintf(stderr, "hpet_fasync, HPET_IE_ON failed\n"); | |
280 | goto out; | |
281 | } | |
282 | ||
283 | for (i = 0; i < iterations; i++) { | |
284 | (void) pause(); | |
285 | fprintf(stderr, "hpet_fasync: count = %d\n", hpet_sigio_count); | |
286 | } | |
287 | ||
288 | out: | |
289 | signal(SIGIO, oldsig); | |
290 | ||
291 | if (fd >= 0) | |
292 | close(fd); | |
293 | ||
294 | return; | |
295 | } |