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