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