| @@ -1,14 +1,14 @@ | | | @@ -1,14 +1,14 @@ |
1 | /* $NetBSD: kern_rndq.c,v 1.47 2015/04/13 22:43:41 riastradh Exp $ */ | | 1 | /* $NetBSD: kern_rndq.c,v 1.48 2015/04/14 11:59:40 riastradh Exp $ */ |
2 | | | 2 | |
3 | /*- | | 3 | /*- |
4 | * Copyright (c) 1997-2013 The NetBSD Foundation, Inc. | | 4 | * Copyright (c) 1997-2013 The NetBSD Foundation, Inc. |
5 | * All rights reserved. | | 5 | * All rights reserved. |
6 | * | | 6 | * |
7 | * This code is derived from software contributed to The NetBSD Foundation | | 7 | * This code is derived from software contributed to The NetBSD Foundation |
8 | * by Michael Graff <explorer@flame.org> and Thor Lancelot Simon. | | 8 | * by Michael Graff <explorer@flame.org> and Thor Lancelot Simon. |
9 | * This code uses ideas and algorithms from the Linux driver written by | | 9 | * This code uses ideas and algorithms from the Linux driver written by |
10 | * Ted Ts'o. | | 10 | * Ted Ts'o. |
11 | * | | 11 | * |
12 | * Redistribution and use in source and binary forms, with or without | | 12 | * Redistribution and use in source and binary forms, with or without |
13 | * modification, are permitted provided that the following conditions | | 13 | * modification, are permitted provided that the following conditions |
14 | * are met: | | 14 | * are met: |
| @@ -22,27 +22,27 @@ | | | @@ -22,27 +22,27 @@ |
22 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | | 22 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
23 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | | 23 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
24 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS | | 24 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
25 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | | 25 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | | 26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | | 27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | | 28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | | 29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | | 30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
31 | * POSSIBILITY OF SUCH DAMAGE. | | 31 | * POSSIBILITY OF SUCH DAMAGE. |
32 | */ | | 32 | */ |
33 | | | 33 | |
34 | #include <sys/cdefs.h> | | 34 | #include <sys/cdefs.h> |
35 | __KERNEL_RCSID(0, "$NetBSD: kern_rndq.c,v 1.47 2015/04/13 22:43:41 riastradh Exp $"); | | 35 | __KERNEL_RCSID(0, "$NetBSD: kern_rndq.c,v 1.48 2015/04/14 11:59:40 riastradh Exp $"); |
36 | | | 36 | |
37 | #include <sys/param.h> | | 37 | #include <sys/param.h> |
38 | #include <sys/atomic.h> | | 38 | #include <sys/atomic.h> |
39 | #include <sys/ioctl.h> | | 39 | #include <sys/ioctl.h> |
40 | #include <sys/fcntl.h> | | 40 | #include <sys/fcntl.h> |
41 | #include <sys/select.h> | | 41 | #include <sys/select.h> |
42 | #include <sys/poll.h> | | 42 | #include <sys/poll.h> |
43 | #include <sys/kmem.h> | | 43 | #include <sys/kmem.h> |
44 | #include <sys/mutex.h> | | 44 | #include <sys/mutex.h> |
45 | #include <sys/proc.h> | | 45 | #include <sys/proc.h> |
46 | #include <sys/kernel.h> | | 46 | #include <sys/kernel.h> |
47 | #include <sys/conf.h> | | 47 | #include <sys/conf.h> |
48 | #include <sys/systm.h> | | 48 | #include <sys/systm.h> |
| @@ -208,27 +208,27 @@ rnd_printf(const char *fmt, ...) | | | @@ -208,27 +208,27 @@ rnd_printf(const char *fmt, ...) |
208 | rnd_printing = 0; | | 208 | rnd_printing = 0; |
209 | } | | 209 | } |
210 | | | 210 | |
211 | void | | 211 | void |
212 | rnd_init_softint(void) { | | 212 | rnd_init_softint(void) { |
213 | rnd_process = softint_establish(SOFTINT_SERIAL|SOFTINT_MPSAFE, | | 213 | rnd_process = softint_establish(SOFTINT_SERIAL|SOFTINT_MPSAFE, |
214 | rnd_intr, NULL); | | 214 | rnd_intr, NULL); |
215 | rnd_wakeup = softint_establish(SOFTINT_CLOCK|SOFTINT_MPSAFE, | | 215 | rnd_wakeup = softint_establish(SOFTINT_CLOCK|SOFTINT_MPSAFE, |
216 | rnd_wake, NULL); | | 216 | rnd_wake, NULL); |
217 | rnd_schedule_process(); | | 217 | rnd_schedule_process(); |
218 | } | | 218 | } |
219 | | | 219 | |
220 | /* | | 220 | /* |
221 | * Generate a 64-bit counter. | | 221 | * Generate a 32-bit counter. |
222 | */ | | 222 | */ |
223 | static inline uint32_t | | 223 | static inline uint32_t |
224 | rnd_counter(void) | | 224 | rnd_counter(void) |
225 | { | | 225 | { |
226 | struct timespec ts; | | 226 | struct timespec ts; |
227 | uint32_t ret; | | 227 | uint32_t ret; |
228 | | | 228 | |
229 | #if defined(__HAVE_CPU_COUNTER) | | 229 | #if defined(__HAVE_CPU_COUNTER) |
230 | if (cpu_hascounter()) | | 230 | if (cpu_hascounter()) |
231 | return cpu_counter32(); | | 231 | return cpu_counter32(); |
232 | #endif | | 232 | #endif |
233 | if (rnd_ready) { | | 233 | if (rnd_ready) { |
234 | nanouptime(&ts); | | 234 | nanouptime(&ts); |