| cfe_console.c (183374) | cfe_console.c (183376) |
|---|---|
| 1/*- 2 * Copyright (c) 2007 Bruce M. Simpson. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2007 Bruce M. Simpson. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> |
| 28__FBSDID("$FreeBSD: head/sys/dev/cfe/cfe_console.c 183374 2008-09-26 05:10:57Z imp $"); | 28__FBSDID("$FreeBSD: head/sys/dev/cfe/cfe_console.c 183376 2008-09-26 05:37:54Z imp $"); |
| 29 30#include "opt_comconsole.h" 31 32#include <sys/param.h> 33#include <sys/kdb.h> 34#include <sys/kernel.h> 35#include <sys/priv.h> 36#include <sys/systm.h> --- 8 unchanged lines hidden (view full) --- 45 46#include <ddb/ddb.h> 47 48#ifndef CFECONS_POLL_HZ 49#define CFECONS_POLL_HZ 4 50#endif 51#define CFEBURSTLEN 128 /* max number of bytes to write in one chunk */ 52 | 29 30#include "opt_comconsole.h" 31 32#include <sys/param.h> 33#include <sys/kdb.h> 34#include <sys/kernel.h> 35#include <sys/priv.h> 36#include <sys/systm.h> --- 8 unchanged lines hidden (view full) --- 45 46#include <ddb/ddb.h> 47 48#ifndef CFECONS_POLL_HZ 49#define CFECONS_POLL_HZ 4 50#endif 51#define CFEBURSTLEN 128 /* max number of bytes to write in one chunk */ 52 |
| 53static d_open_t cfe_dev_open; 54static d_close_t cfe_dev_close; | 53static tsw_open_t cfe_tty_open; 54static tsw_close_t cfe_tty_close; 55static tsw_outwakeup_t cfe_tty_outwakeup; |
| 55 | 56 |
| 56static struct cdevsw cfe_cdevsw = { 57 .d_version = D_VERSION, 58 .d_open = cfe_dev_open, 59 .d_close = cfe_dev_close, 60 .d_name = "cfe", 61 .d_flags = D_TTY | D_NEEDGIANT, | 57static struct ttydevsw cfe_ttydevsw = { 58 .tsw_flags = TF_NOPREFIX, 59 .tsw_open = cfe_tty_open, 60 .tsw_close = cfe_tty_close, 61 .tsw_outwakeup = cfe_tty_outwakeup, |
| 62}; 63 64static int conhandle = -1; 65static struct tty *cfe_tp = NULL; 66/* XXX does cfe have to poll? */ 67static int polltime; 68static struct callout_handle cfe_timeouthandle 69 = CALLOUT_HANDLE_INITIALIZER(&cfe_timeouthandle); 70 71#if defined(KDB) && defined(ALT_BREAK_TO_DEBUGGER) 72static int alt_break_state; 73#endif 74 | 62}; 63 64static int conhandle = -1; 65static struct tty *cfe_tp = NULL; 66/* XXX does cfe have to poll? */ 67static int polltime; 68static struct callout_handle cfe_timeouthandle 69 = CALLOUT_HANDLE_INITIALIZER(&cfe_timeouthandle); 70 71#if defined(KDB) && defined(ALT_BREAK_TO_DEBUGGER) 72static int alt_break_state; 73#endif 74 |
| 75static void cfe_tty_start(struct tty *); 76static int cfe_tty_param(struct tty *, struct termios *); 77static void cfe_tty_stop(struct tty *, int); | |
| 78static void cfe_timeout(void *); 79 80static cn_probe_t cfe_cnprobe; 81static cn_init_t cfe_cninit; 82static cn_term_t cfe_cnterm; 83static cn_getc_t cfe_cngetc; 84static cn_putc_t cfe_cnputc; 85 86CONSOLE_DRIVER(cfe); 87 88static void 89cn_drvinit(void *unused) 90{ 91 char output[32]; | 75static void cfe_timeout(void *); 76 77static cn_probe_t cfe_cnprobe; 78static cn_init_t cfe_cninit; 79static cn_term_t cfe_cnterm; 80static cn_getc_t cfe_cngetc; 81static cn_putc_t cfe_cnputc; 82 83CONSOLE_DRIVER(cfe); 84 85static void 86cn_drvinit(void *unused) 87{ 88 char output[32]; |
| 92 struct cdev *dev; | 89 struct tty *tp; |
| 93 94 if (cfe_consdev.cn_pri != CN_DEAD && 95 cfe_consdev.cn_name[0] != '\0') { | 90 91 if (cfe_consdev.cn_pri != CN_DEAD && 92 cfe_consdev.cn_name[0] != '\0') { |
| 96 dev = make_dev(&cfe_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, "%s", 97 output); 98 make_dev_alias(dev, "cfecons"); | 93 tp = tty_alloc(&cfe_ttydevsw, NULL, NULL); 94 tty_makedev(tp, NULL, "%s", output); 95 tty_makealias(tp, "cfecons"); |
| 99 } 100} 101 102static int | 96 } 97} 98 99static int |
| 103cfe_dev_open(struct cdev *dev, int flag, int mode, struct thread *td) | 100cfe_tty_open(struct tty *tp) |
| 104{ | 101{ |
| 105 struct tty *tp; 106 int unit; 107 int error, setuptimeout; | 102 polltime = hz / CFECONS_POLL_HZ; 103 if (polltime < 1) 104 polltime = 1; 105 cfe_timeouthandle = timeout(cfe_timeout, tp, polltime); |
| 108 | 106 |
| 109 error = 0; 110 setuptimeout = 0; 111 unit = minor(dev); 112 113 /* 114 * XXX: BAD, should happen at attach time 115 */ 116 if (dev->si_tty == NULL) { 117 cfe_tp = ttyalloc(); 118 dev->si_tty = cfe_tp; 119 cfe_tp->t_dev = dev; 120 } 121 tp = dev->si_tty; 122 123 tp->t_oproc = cfe_tty_start; 124 tp->t_param = cfe_tty_param; 125 tp->t_stop = cfe_tty_stop; 126 tp->t_dev = dev; 127 128 if ((tp->t_state & TS_ISOPEN) == 0) { 129 tp->t_state |= TS_CARR_ON; 130 ttyconsolemode(tp, 0); 131 132 setuptimeout = 1; 133 } else if ((tp->t_state & TS_XCLUDE) && 134 priv_check(td, PRIV_TTY_EXCLUSIVE)) { 135 return (EBUSY); 136 } 137 138 error = ttyld_open(tp, dev); 139 140 if (error == 0 && setuptimeout) { 141 polltime = hz / CFECONS_POLL_HZ; 142 if (polltime < 1) { 143 polltime = 1; 144 } 145 146 cfe_timeouthandle = timeout(cfe_timeout, tp, polltime); 147 } 148 149 return (error); | 107 return (0); |
| 150} 151 | 108} 109 |
| 152static int 153cfe_dev_close(struct cdev *dev, int flag, int mode, struct thread *td) | 110static void 111cfe_tty_close(struct tty *tp) |
| 154{ | 112{ |
| 155 int unit; 156 struct tty *tp; | |
| 157 | 113 |
| 158 unit = minor(dev); 159 tp = dev->si_tty; 160 161 if (unit != 0) { 162 return (ENXIO); 163 } 164 | |
| 165 /* XXX Should be replaced with callout_stop(9) */ 166 untimeout(cfe_timeout, tp, cfe_timeouthandle); | 114 /* XXX Should be replaced with callout_stop(9) */ 115 untimeout(cfe_timeout, tp, cfe_timeouthandle); |
| 167 ttyld_close(tp, flag); 168 tty_close(tp); 169 170 return (0); | |
| 171} 172 | 116} 117 |
| 173 174static int 175cfe_tty_param(struct tty *tp, struct termios *t) 176{ 177 178 return (0); 179} 180 | |
| 181static void | 118static void |
| 182cfe_tty_start(struct tty *tp) | 119cfe_tty_outwakeup(struct tty *tp) |
| 183{ | 120{ |
| 184 struct clist *cl; | |
| 185 int len; 186 u_char buf[CFEBURSTLEN]; 187 | 121 int len; 122 u_char buf[CFEBURSTLEN]; 123 |
| 188 if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP)) 189 return; 190 191 tp->t_state |= TS_BUSY; 192 cl = &tp->t_outq; 193 len = q_to_b(cl, buf, CFEBURSTLEN); 194 while (cfe_write(conhandle, buf, len) == 0) 195 ; 196 tp->t_state &= ~TS_BUSY; 197 198 ttwwakeup(tp); 199} 200 201static void 202cfe_tty_stop(struct tty *tp, int flag) 203{ 204 205 if (tp->t_state & TS_BUSY) { 206 if ((tp->t_state & TS_TTSTOP) == 0) { 207 tp->t_state |= TS_FLUSH; 208 } | 124 for (;;) { 125 len = ttydisc_getc(tp, buf, sizeof buf); 126 if (len == 0) 127 break; 128 while (cfe_write(conhandle, buf, len) == 0) 129 ; |
| 209 } 210} 211 212static void 213cfe_timeout(void *v) 214{ 215 struct tty *tp; 216 int c; 217 218 tp = (struct tty *)v; 219 | 130 } 131} 132 133static void 134cfe_timeout(void *v) 135{ 136 struct tty *tp; 137 int c; 138 139 tp = (struct tty *)v; 140 |
| 220 while ((c = cfe_cngetc(NULL)) != -1) { 221 if (tp->t_state & TS_ISOPEN) { 222 ttyld_rint(tp, c); 223 } 224 } | 141 tty_lock(tp); 142 while ((c = cfe_cngetc(NULL)) != -1) 143 ttydisc_rint(tp, c, 0); 144 ttydisc_rint_done(tp); 145 tty_unlock(tp); |
| 225 226 cfe_timeouthandle = timeout(cfe_timeout, tp, polltime); 227} 228 229static void 230cfe_cnprobe(struct consdev *cp) 231{ 232 --- 35 unchanged lines hidden (view full) --- 268 int result; 269 unsigned char ch; 270 271 while ((result = cfe_read(conhandle, &ch, 1)) == 0) 272 ; 273 274 if (result > 0) { 275#if defined(KDB) && defined(ALT_BREAK_TO_DEBUGGER) | 146 147 cfe_timeouthandle = timeout(cfe_timeout, tp, polltime); 148} 149 150static void 151cfe_cnprobe(struct consdev *cp) 152{ 153 --- 35 unchanged lines hidden (view full) --- 189 int result; 190 unsigned char ch; 191 192 while ((result = cfe_read(conhandle, &ch, 1)) == 0) 193 ; 194 195 if (result > 0) { 196#if defined(KDB) && defined(ALT_BREAK_TO_DEBUGGER) |
| 276 if (kdb_alt_break(ch, &alt_break_state)) 277 kdb_enter(KDB_WHY_BREAK, "Break sequence on console"); | 197 int kdb_brk; 198 199 if ((kdb_brk = kdb_alt_break(ch, &alt_break_state)) != 0) { 200 switch (kdb_brk) { 201 case KDB_REQ_DEBUGGER: 202 kdb_enter(KDB_WHY_BREAK, 203 "Break sequence on console"); 204 break; 205 case KDB_REQ_PANIC: 206 kdb_panic("Panic sequence on console"); 207 break; 208 case KDB_REQ_REBOOT: 209 kdb_reboot(); 210 break; 211 212 } 213 } |
| 278#endif 279 return (ch); 280 } 281 282 return (-1); 283} 284 285static void --- 4 unchanged lines hidden (view full) --- 290 if (c == '\n') 291 cfe_cnputc(cp, '\r'); 292 293 cbuf = c; 294 while (cfe_write(conhandle, &cbuf, 1) == 0) 295 ; 296} 297 | 214#endif 215 return (ch); 216 } 217 218 return (-1); 219} 220 221static void --- 4 unchanged lines hidden (view full) --- 226 if (c == '\n') 227 cfe_cnputc(cp, '\r'); 228 229 cbuf = c; 230 while (cfe_write(conhandle, &cbuf, 1) == 0) 231 ; 232} 233 |
| 298SYSINIT(cndev, SI_SUB_CONFIGURE, SI_ORDER_MIDDLE, cn_drvinit, NULL) | 234SYSINIT(cndev, SI_SUB_CONFIGURE, SI_ORDER_MIDDLE, cn_drvinit, NULL); |