Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1 | /*----------------------------------------------------------------------------- |
| 2 | * pmcc4_drv.c - |
| 3 | * |
| 4 | * Copyright (C) 2007 One Stop Systems, Inc. |
| 5 | * Copyright (C) 2002-2006 SBE, Inc. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * For further information, contact via email: support@onestopsystems.com |
| 18 | * One Stop Systems, Inc. Escondido, California U.S.A. |
| 19 | *----------------------------------------------------------------------------- |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 20 | */ |
| 21 | |
Joe Perches | e6e4d05 | 2010-05-03 11:02:44 -0700 | [diff] [blame] | 22 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 23 | |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 24 | #include <linux/types.h> |
| 25 | #include "pmcc4_sysdep.h" |
| 26 | #include <linux/errno.h> |
| 27 | #include <linux/kernel.h> |
| 28 | #include <linux/sched.h> /* include for timer */ |
| 29 | #include <linux/timer.h> /* include for timer */ |
| 30 | #include <linux/hdlc.h> |
| 31 | #include <asm/io.h> |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 32 | |
| 33 | #include "sbecom_inline_linux.h" |
| 34 | #include "libsbew.h" |
| 35 | #include "pmcc4_private.h" |
| 36 | #include "pmcc4.h" |
| 37 | #include "pmcc4_ioctls.h" |
| 38 | #include "musycc.h" |
| 39 | #include "comet.h" |
| 40 | #include "sbe_bid.h" |
| 41 | |
| 42 | #ifdef SBE_INCLUDE_SYMBOLS |
| 43 | #define STATIC |
| 44 | #else |
| 45 | #define STATIC static |
| 46 | #endif |
| 47 | |
| 48 | |
| 49 | #define KERN_WARN KERN_WARNING |
| 50 | |
| 51 | /* forward references */ |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 52 | status_t c4_wk_chan_init (mpi_t *, mch_t *); |
| 53 | void c4_wq_port_cleanup (mpi_t *); |
| 54 | status_t c4_wq_port_init (mpi_t *); |
| 55 | |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 56 | int c4_loop_port (ci_t *, int, u_int8_t); |
| 57 | status_t c4_set_port (ci_t *, int); |
| 58 | status_t musycc_chan_down (ci_t *, int); |
| 59 | |
| 60 | u_int32_t musycc_chan_proto (int); |
| 61 | status_t musycc_dump_ring (ci_t *, unsigned int); |
| 62 | status_t __init musycc_init (ci_t *); |
| 63 | void musycc_init_mdt (mpi_t *); |
| 64 | void musycc_serv_req (mpi_t *, u_int32_t); |
| 65 | void musycc_update_timeslots (mpi_t *); |
| 66 | |
| 67 | extern void musycc_update_tx_thp (mch_t *); |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 68 | extern int cxt1e1_log_level; |
Bob Beers | c694ed8 | 2010-10-16 18:06:36 -0400 | [diff] [blame] | 69 | extern int cxt1e1_max_mru; |
| 70 | extern int cxt1e1_max_mtu; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 71 | extern int max_rxdesc_used, max_rxdesc_default; |
| 72 | extern int max_txdesc_used, max_txdesc_default; |
| 73 | |
| 74 | #if defined (__powerpc__) |
| 75 | extern void *memset (void *s, int c, size_t n); |
| 76 | |
| 77 | #endif |
| 78 | |
| 79 | int drvr_state = SBE_DRVR_INIT; |
| 80 | ci_t *c4_list = 0; |
| 81 | ci_t *CI; /* dummy pointer to board ZEROE's data - |
| 82 | * DEBUG USAGE */ |
| 83 | |
| 84 | |
| 85 | void |
| 86 | sbecom_set_loglevel (int d) |
| 87 | { |
| 88 | /* |
| 89 | * The code within the following -if- clause is a backdoor debug facility |
| 90 | * which can be used to display the state of a board's channel. |
| 91 | */ |
| 92 | if (d > LOG_DEBUG) |
| 93 | { |
| 94 | unsigned int channum = d - (LOG_DEBUG + 1); /* convert to ZERO |
| 95 | * relativity */ |
| 96 | |
| 97 | (void) musycc_dump_ring ((ci_t *) CI, channum); /* CI implies support |
| 98 | * for card 0 only */ |
| 99 | } else |
| 100 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 101 | if (cxt1e1_log_level != d) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 102 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 103 | pr_info("log level changed from %d to %d\n", cxt1e1_log_level, d); |
| 104 | cxt1e1_log_level = d; /* set new */ |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 105 | } else |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 106 | pr_info("log level is %d\n", cxt1e1_log_level); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 107 | } |
| 108 | } |
| 109 | |
| 110 | |
| 111 | mch_t * |
| 112 | c4_find_chan (int channum) |
| 113 | { |
| 114 | ci_t *ci; |
| 115 | mch_t *ch; |
| 116 | int portnum, gchan; |
| 117 | |
| 118 | for (ci = c4_list; ci; ci = ci->next) |
| 119 | for (portnum = 0; portnum < ci->max_port; portnum++) |
| 120 | for (gchan = 0; gchan < MUSYCC_NCHANS; gchan++) |
| 121 | { |
| 122 | if ((ch = ci->port[portnum].chan[gchan])) |
| 123 | { |
| 124 | if ((ch->state != UNASSIGNED) && |
| 125 | (ch->channum == channum)) |
| 126 | return (ch); |
| 127 | } |
| 128 | } |
| 129 | return 0; |
| 130 | } |
| 131 | |
| 132 | |
| 133 | ci_t *__init |
| 134 | c4_new (void *hi) |
| 135 | { |
| 136 | ci_t *ci; |
| 137 | |
| 138 | #ifdef SBE_MAP_DEBUG |
Joe Perches | e6e4d05 | 2010-05-03 11:02:44 -0700 | [diff] [blame] | 139 | pr_warning("c4_new() entered, ci needs %u.\n", |
| 140 | (unsigned int) sizeof (ci_t)); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 141 | #endif |
| 142 | |
| 143 | ci = (ci_t *) OS_kmalloc (sizeof (ci_t)); |
| 144 | if (ci) |
| 145 | { |
| 146 | ci->hdw_info = hi; |
| 147 | ci->state = C_INIT; /* mark as hardware not available */ |
| 148 | ci->next = c4_list; |
| 149 | c4_list = ci; |
| 150 | ci->brdno = ci->next ? ci->next->brdno + 1 : 0; |
| 151 | } else |
Joe Perches | e6e4d05 | 2010-05-03 11:02:44 -0700 | [diff] [blame] | 152 | pr_warning("failed CI malloc, size %u.\n", |
| 153 | (unsigned int) sizeof (ci_t)); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 154 | |
| 155 | if (CI == 0) |
| 156 | CI = ci; /* DEBUG, only board 0 usage */ |
| 157 | return ci; |
| 158 | } |
| 159 | |
| 160 | |
| 161 | /*** |
| 162 | * Check port state and set LED states using watchdog or ioctl... |
| 163 | * also check for in-band SF loopback commands (& cause results if they are there) |
| 164 | * |
| 165 | * Alarm function depends on comet bits indicating change in |
| 166 | * link status (linkMask) to keep the link status indication straight. |
| 167 | * |
| 168 | * Indications are only LED and system log -- except when ioctl is invoked. |
| 169 | * |
| 170 | * "alarmed" record (a.k.a. copyVal, in some cases below) decodes as: |
| 171 | * |
| 172 | * RMAI (E1 only) 0x100 |
| 173 | * alarm LED on 0x80 |
| 174 | * link LED on 0x40 |
| 175 | * link returned 0x20 (link was down, now it's back and 'port get' hasn't run) |
| 176 | * change in LED 0x10 (update LED register because value has changed) |
| 177 | * link is down 0x08 |
| 178 | * YelAlm(RAI) 0x04 |
| 179 | * RedAlm 0x02 |
| 180 | * AIS(blue)Alm 0x01 |
| 181 | * |
| 182 | * note "link has returned" indication is reset on read |
| 183 | * (e.g. by use of the c4_control port get command) |
| 184 | */ |
| 185 | |
| 186 | #define sbeLinkMask 0x41 /* change in signal status (lost/recovered) + |
| 187 | * state */ |
| 188 | #define sbeLinkChange 0x40 |
| 189 | #define sbeLinkDown 0x01 |
| 190 | #define sbeAlarmsMask 0x07 /* red / yellow / blue alarm conditions */ |
| 191 | #define sbeE1AlarmsMask 0x107 /* alarm conditions */ |
| 192 | |
| 193 | #define COMET_LBCMD_READ 0x80 /* read only (do not set, return read value) */ |
| 194 | |
| 195 | void |
| 196 | checkPorts (ci_t * ci) |
| 197 | { |
| 198 | #ifndef CONFIG_SBE_PMCC4_NCOMM |
| 199 | /* |
| 200 | * PORT POINT - NCOMM needs to avoid this code since the polling of |
| 201 | * alarms conflicts with NCOMM's interrupt servicing implementation. |
| 202 | */ |
| 203 | |
| 204 | comet_t *comet; |
| 205 | volatile u_int32_t value; |
| 206 | u_int32_t copyVal, LEDval; |
| 207 | |
| 208 | u_int8_t portnum; |
| 209 | |
| 210 | LEDval = 0; |
| 211 | for (portnum = 0; portnum < ci->max_port; portnum++) |
| 212 | { |
| 213 | copyVal = 0x12f & (ci->alarmed[portnum]); /* port's alarm record */ |
| 214 | comet = ci->port[portnum].cometbase; |
| 215 | value = pci_read_32 ((u_int32_t *) &comet->cdrc_ists) & sbeLinkMask; /* link loss reg */ |
| 216 | |
| 217 | if (value & sbeLinkChange) /* is there a change in the link stuff */ |
| 218 | { |
| 219 | /* if there's been a change (above) and yet it's the same (below) */ |
| 220 | if (!(((copyVal >> 3) & sbeLinkDown) ^ (value & sbeLinkDown))) |
| 221 | { |
| 222 | if (value & sbeLinkDown) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 223 | pr_warning("%s: Port %d momentarily recovered.\n", |
| 224 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 225 | else |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 226 | pr_warning("%s: Warning: Port %d link was briefly down.\n", |
| 227 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 228 | } else if (value & sbeLinkDown) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 229 | pr_warning("%s: Warning: Port %d link is down.\n", |
| 230 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 231 | else |
| 232 | { |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 233 | pr_warning("%s: Port %d link has recovered.\n", |
| 234 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 235 | copyVal |= 0x20; /* record link transition to up */ |
| 236 | } |
| 237 | copyVal |= 0x10; /* change (link) --> update LEDs */ |
| 238 | } |
| 239 | copyVal &= 0x137; /* clear LED & link old history bits & |
| 240 | * save others */ |
| 241 | if (value & sbeLinkDown) |
| 242 | copyVal |= 0x08; /* record link status (now) */ |
| 243 | else |
| 244 | { /* if link is up, do this */ |
| 245 | copyVal |= 0x40; /* LED indicate link is up */ |
| 246 | /* Alarm things & the like ... first if E1, then if T1 */ |
| 247 | if (IS_FRAME_ANY_E1 (ci->port[portnum].p.port_mode)) |
| 248 | { |
| 249 | /* |
| 250 | * first check Codeword (SaX) changes & CRC and |
| 251 | * sub-multi-frame errors |
| 252 | */ |
| 253 | /* |
| 254 | * note these errors are printed every time they are detected |
| 255 | * vs. alarms |
| 256 | */ |
| 257 | value = pci_read_32 ((u_int32_t *) &comet->e1_frmr_nat_ists); /* codeword */ |
| 258 | if (value & 0x1f) |
| 259 | { /* if errors (crc or smf only) */ |
| 260 | if (value & 0x10) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 261 | pr_warning("%s: E1 Port %d Codeword Sa4 change detected.\n", |
| 262 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 263 | if (value & 0x08) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 264 | pr_warning("%s: E1 Port %d Codeword Sa5 change detected.\n", |
| 265 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 266 | if (value & 0x04) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 267 | pr_warning("%s: E1 Port %d Codeword Sa6 change detected.\n", |
| 268 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 269 | if (value & 0x02) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 270 | pr_warning("%s: E1 Port %d Codeword Sa7 change detected.\n", |
| 271 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 272 | if (value & 0x01) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 273 | pr_warning("%s: E1 Port %d Codeword Sa8 change detected.\n", |
| 274 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 275 | } |
| 276 | value = pci_read_32 ((u_int32_t *) &comet->e1_frmr_mists); /* crc & smf */ |
| 277 | if (value & 0x3) |
| 278 | { /* if errors (crc or smf only) */ |
| 279 | if (value & sbeE1CRC) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 280 | pr_warning("%s: E1 Port %d CRC-4 error(s) detected.\n", |
| 281 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 282 | if (value & sbeE1errSMF) /* error in sub-multiframe */ |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 283 | pr_warning("%s: E1 Port %d received errored SMF.\n", |
| 284 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 285 | } |
| 286 | value = pci_read_32 ((u_int32_t *) &comet->e1_frmr_masts) & 0xcc; /* alarms */ |
| 287 | /* |
| 288 | * pack alarms together (bitmiser), and construct similar to |
| 289 | * T1 |
| 290 | */ |
| 291 | /* RAI,RMAI,.,.,LOF,AIS,.,. ==> RMAI,.,.,.,.,.,RAI,LOF,AIS */ |
| 292 | /* see 0x97 */ |
| 293 | value = (value >> 2); |
| 294 | if (value & 0x30) |
| 295 | { |
| 296 | if (value & 0x20) |
| 297 | value |= 0x40; /* RAI */ |
| 298 | if (value & 0x10) |
| 299 | value |= 0x100; /* RMAI */ |
| 300 | value &= ~0x30; |
| 301 | } /* finished packing alarm in handy order */ |
| 302 | if (value != (copyVal & sbeE1AlarmsMask)) |
| 303 | { /* if alarms changed */ |
| 304 | copyVal |= 0x10;/* change LED status */ |
| 305 | if ((copyVal & sbeRedAlm) && !(value & sbeRedAlm)) |
| 306 | { |
| 307 | copyVal &= ~sbeRedAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 308 | pr_warning("%s: E1 Port %d LOF alarm ended.\n", |
| 309 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 310 | } else if (!(copyVal & sbeRedAlm) && (value & sbeRedAlm)) |
| 311 | { |
| 312 | copyVal |= sbeRedAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 313 | pr_warning("%s: E1 Warning: Port %d LOF alarm.\n", |
| 314 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 315 | } else if ((copyVal & sbeYelAlm) && !(value & sbeYelAlm)) |
| 316 | { |
| 317 | copyVal &= ~sbeYelAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 318 | pr_warning("%s: E1 Port %d RAI alarm ended.\n", |
| 319 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 320 | } else if (!(copyVal & sbeYelAlm) && (value & sbeYelAlm)) |
| 321 | { |
| 322 | copyVal |= sbeYelAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 323 | pr_warning("%s: E1 Warning: Port %d RAI alarm.\n", |
| 324 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 325 | } else if ((copyVal & sbeE1RMAI) && !(value & sbeE1RMAI)) |
| 326 | { |
| 327 | copyVal &= ~sbeE1RMAI; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 328 | pr_warning("%s: E1 Port %d RMAI alarm ended.\n", |
| 329 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 330 | } else if (!(copyVal & sbeE1RMAI) && (value & sbeE1RMAI)) |
| 331 | { |
| 332 | copyVal |= sbeE1RMAI; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 333 | pr_warning("%s: E1 Warning: Port %d RMAI alarm.\n", |
| 334 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 335 | } else if ((copyVal & sbeAISAlm) && !(value & sbeAISAlm)) |
| 336 | { |
| 337 | copyVal &= ~sbeAISAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 338 | pr_warning("%s: E1 Port %d AIS alarm ended.\n", |
| 339 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 340 | } else if (!(copyVal & sbeAISAlm) && (value & sbeAISAlm)) |
| 341 | { |
| 342 | copyVal |= sbeAISAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 343 | pr_warning("%s: E1 Warning: Port %d AIS alarm.\n", |
| 344 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 345 | } |
| 346 | } |
| 347 | /* end of E1 alarm code */ |
| 348 | } else |
| 349 | { /* if a T1 mode */ |
| 350 | value = pci_read_32 ((u_int32_t *) &comet->t1_almi_ists); /* alarms */ |
| 351 | value &= sbeAlarmsMask; |
| 352 | if (value != (copyVal & sbeAlarmsMask)) |
| 353 | { /* if alarms changed */ |
| 354 | copyVal |= 0x10;/* change LED status */ |
| 355 | if ((copyVal & sbeRedAlm) && !(value & sbeRedAlm)) |
| 356 | { |
| 357 | copyVal &= ~sbeRedAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 358 | pr_warning("%s: Port %d red alarm ended.\n", |
| 359 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 360 | } else if (!(copyVal & sbeRedAlm) && (value & sbeRedAlm)) |
| 361 | { |
| 362 | copyVal |= sbeRedAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 363 | pr_warning("%s: Warning: Port %d red alarm.\n", |
| 364 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 365 | } else if ((copyVal & sbeYelAlm) && !(value & sbeYelAlm)) |
| 366 | { |
| 367 | copyVal &= ~sbeYelAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 368 | pr_warning("%s: Port %d yellow (RAI) alarm ended.\n", |
| 369 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 370 | } else if (!(copyVal & sbeYelAlm) && (value & sbeYelAlm)) |
| 371 | { |
| 372 | copyVal |= sbeYelAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 373 | pr_warning("%s: Warning: Port %d yellow (RAI) alarm.\n", |
| 374 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 375 | } else if ((copyVal & sbeAISAlm) && !(value & sbeAISAlm)) |
| 376 | { |
| 377 | copyVal &= ~sbeAISAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 378 | pr_warning("%s: Port %d blue (AIS) alarm ended.\n", |
| 379 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 380 | } else if (!(copyVal & sbeAISAlm) && (value & sbeAISAlm)) |
| 381 | { |
| 382 | copyVal |= sbeAISAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 383 | pr_warning("%s: Warning: Port %d blue (AIS) alarm.\n", |
| 384 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 385 | } |
| 386 | } |
| 387 | } /* end T1 mode alarm checks */ |
| 388 | } |
| 389 | if (copyVal & sbeAlarmsMask) |
| 390 | copyVal |= 0x80; /* if alarm turn yel LED on */ |
| 391 | if (copyVal & 0x10) |
| 392 | LEDval |= 0x100; /* tag if LED values have changed */ |
| 393 | LEDval |= ((copyVal & 0xc0) >> (6 - (portnum * 2))); |
| 394 | |
| 395 | ci->alarmed[portnum] &= 0xfffff000; /* out with the old (it's fff |
| 396 | * ... foo) */ |
| 397 | ci->alarmed[portnum] |= (copyVal); /* in with the new */ |
| 398 | |
| 399 | /* |
| 400 | * enough with the alarms and LED's, now let's check for loopback |
| 401 | * requests |
| 402 | */ |
| 403 | |
| 404 | if (IS_FRAME_ANY_T1 (ci->port[portnum].p.port_mode)) |
| 405 | { /* if a T1 mode */ |
| 406 | /* |
| 407 | * begin in-band (SF) loopback code detection -- start by reading |
| 408 | * command |
| 409 | */ |
| 410 | value = pci_read_32 ((u_int32_t *) &comet->ibcd_ies); /* detect reg. */ |
| 411 | value &= 0x3; /* trim to handy bits */ |
| 412 | if (value & 0x2) |
| 413 | { /* activate loopback (sets for deactivate |
| 414 | * code length) */ |
| 415 | copyVal = c4_loop_port (ci, portnum, COMET_LBCMD_READ); /* read line loopback |
| 416 | * mode */ |
| 417 | if (copyVal != COMET_MDIAG_LINELB) /* don't do it again if |
| 418 | * already in that mode */ |
| 419 | c4_loop_port (ci, portnum, COMET_MDIAG_LINELB); /* put port in line |
| 420 | * loopback mode */ |
| 421 | } |
| 422 | if (value & 0x1) |
| 423 | { /* deactivate loopback (sets for activate |
| 424 | * code length) */ |
| 425 | copyVal = c4_loop_port (ci, portnum, COMET_LBCMD_READ); /* read line loopback |
| 426 | * mode */ |
| 427 | if (copyVal != COMET_MDIAG_LBOFF) /* don't do it again if |
| 428 | * already in that mode */ |
| 429 | c4_loop_port (ci, portnum, COMET_MDIAG_LBOFF); /* take port out of any |
| 430 | * loopback mode */ |
| 431 | } |
| 432 | } |
| 433 | if (IS_FRAME_ANY_T1ESF (ci->port[portnum].p.port_mode)) |
| 434 | { /* if a T1 ESF mode */ |
| 435 | /* begin ESF loopback code */ |
| 436 | value = pci_read_32 ((u_int32_t *) &comet->t1_rboc_sts) & 0x3f; /* read command */ |
| 437 | if (value == 0x07) |
| 438 | c4_loop_port (ci, portnum, COMET_MDIAG_LINELB); /* put port in line |
| 439 | * loopback mode */ |
| 440 | if (value == 0x0a) |
| 441 | c4_loop_port (ci, portnum, COMET_MDIAG_PAYLB); /* put port in payload |
| 442 | * loopbk mode */ |
| 443 | if ((value == 0x1c) || (value == 0x19) || (value == 0x12)) |
| 444 | c4_loop_port (ci, portnum, COMET_MDIAG_LBOFF); /* take port out of any |
| 445 | * loopbk mode */ |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 446 | if (cxt1e1_log_level >= LOG_DEBUG) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 447 | if (value != 0x3f) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 448 | pr_warning("%s: BOC value = %x on Port %d\n", |
| 449 | ci->devname, value, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 450 | /* end ESF loopback code */ |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | /* if something is new, update LED's */ |
| 455 | if (LEDval & 0x100) |
| 456 | pci_write_32 ((u_int32_t *) &ci->cpldbase->leds, LEDval & 0xff); |
| 457 | #endif /*** CONFIG_SBE_PMCC4_NCOMM ***/ |
| 458 | } |
| 459 | |
| 460 | |
| 461 | STATIC void |
| 462 | c4_watchdog (ci_t * ci) |
| 463 | { |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 464 | if (drvr_state != SBE_DRVR_AVAILABLE) |
| 465 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 466 | if (cxt1e1_log_level >= LOG_MONITOR) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 467 | pr_info("drvr not available (%x)\n", drvr_state); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 468 | return; |
| 469 | } |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 470 | ci->wdcount++; |
| 471 | checkPorts (ci); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 472 | ci->wd_notify = 0; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 473 | } |
| 474 | |
| 475 | |
| 476 | void |
| 477 | c4_cleanup (void) |
| 478 | { |
| 479 | ci_t *ci, *next; |
| 480 | mpi_t *pi; |
| 481 | int portnum, j; |
| 482 | |
| 483 | ci = c4_list; |
| 484 | while (ci) |
| 485 | { |
| 486 | next = ci->next; /* protect <next> from upcoming <free> */ |
| 487 | pci_write_32 ((u_int32_t *) &ci->cpldbase->leds, PMCC4_CPLD_LED_OFF); |
| 488 | for (portnum = 0; portnum < ci->max_port; portnum++) |
| 489 | { |
| 490 | pi = &ci->port[portnum]; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 491 | c4_wq_port_cleanup (pi); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 492 | for (j = 0; j < MUSYCC_NCHANS; j++) |
| 493 | { |
| 494 | if (pi->chan[j]) |
| 495 | OS_kfree (pi->chan[j]); /* free mch_t struct */ |
| 496 | } |
| 497 | OS_kfree (pi->regram_saved); |
| 498 | } |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 499 | OS_kfree (ci->iqd_p_saved); |
| 500 | OS_kfree (ci); |
| 501 | ci = next; /* cleanup next board, if any */ |
| 502 | } |
| 503 | } |
| 504 | |
| 505 | |
| 506 | /* |
| 507 | * This function issues a write to all comet chips and expects the same data |
| 508 | * to be returned from the subsequent read. This determines the board build |
| 509 | * to be a 1-port, 2-port, or 4-port build. The value returned represents a |
| 510 | * bit-mask of the found ports. Only certain configurations are considered |
| 511 | * VALID or LEGAL builds. |
| 512 | */ |
| 513 | |
| 514 | int |
| 515 | c4_get_portcfg (ci_t * ci) |
| 516 | { |
| 517 | comet_t *comet; |
| 518 | int portnum, mask; |
| 519 | u_int32_t wdata, rdata; |
| 520 | |
| 521 | wdata = COMET_MDIAG_LBOFF; /* take port out of any loopback mode */ |
| 522 | |
| 523 | mask = 0; |
| 524 | for (portnum = 0; portnum < MUSYCC_NPORTS; portnum++) |
| 525 | { |
| 526 | comet = ci->port[portnum].cometbase; |
| 527 | pci_write_32 ((u_int32_t *) &comet->mdiag, wdata); |
| 528 | rdata = pci_read_32 ((u_int32_t *) &comet->mdiag) & COMET_MDIAG_LBMASK; |
| 529 | if (wdata == rdata) |
| 530 | mask |= 1 << portnum; |
| 531 | } |
| 532 | return mask; |
| 533 | } |
| 534 | |
| 535 | |
| 536 | /* nothing herein should generate interrupts */ |
| 537 | |
| 538 | status_t __init |
| 539 | c4_init (ci_t * ci, u_char *func0, u_char *func1) |
| 540 | { |
| 541 | mpi_t *pi; |
| 542 | mch_t *ch; |
| 543 | static u_int32_t count = 0; |
| 544 | int portnum, j; |
| 545 | |
| 546 | ci->state = C_INIT; |
| 547 | ci->brdno = count++; |
| 548 | ci->intlog.this_status_new = 0; |
| 549 | atomic_set (&ci->bh_pending, 0); |
| 550 | |
| 551 | ci->reg = (struct musycc_globalr *) func0; |
| 552 | ci->eeprombase = (u_int32_t *) (func1 + EEPROM_OFFSET); |
| 553 | ci->cpldbase = (c4cpld_t *) ((u_int32_t *) (func1 + ISPLD_OFFSET)); |
| 554 | |
| 555 | /*** PORT POINT - the following is the first access of any type to the hardware ***/ |
| 556 | #ifdef CONFIG_SBE_PMCC4_NCOMM |
| 557 | /* NCOMM driver uses INTB interrupt to monitor CPLD register */ |
| 558 | pci_write_32 ((u_int32_t *) &ci->reg->glcd, GCD_MAGIC); |
| 559 | #else |
| 560 | /* standard driver POLLS for INTB via CPLD register */ |
| 561 | pci_write_32 ((u_int32_t *) &ci->reg->glcd, GCD_MAGIC | MUSYCC_GCD_INTB_DISABLE); |
| 562 | #endif |
| 563 | |
| 564 | { |
| 565 | int pmsk; |
| 566 | |
| 567 | /* need comet addresses available for determination of hardware build */ |
| 568 | for (portnum = 0; portnum < MUSYCC_NPORTS; portnum++) |
| 569 | { |
| 570 | pi = &ci->port[portnum]; |
| 571 | pi->cometbase = (comet_t *) ((u_int32_t *) (func1 + COMET_OFFSET (portnum))); |
| 572 | pi->reg = (struct musycc_globalr *) ((u_char *) ci->reg + (portnum * 0x800)); |
| 573 | pi->portnum = portnum; |
| 574 | pi->p.portnum = portnum; |
| 575 | pi->openchans = 0; |
| 576 | #ifdef SBE_MAP_DEBUG |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 577 | pr_info("Comet-%d: addr = %p\n", portnum, pi->cometbase); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 578 | #endif |
| 579 | } |
| 580 | pmsk = c4_get_portcfg (ci); |
| 581 | switch (pmsk) |
| 582 | { |
| 583 | case 0x1: |
| 584 | ci->max_port = 1; |
| 585 | break; |
| 586 | case 0x3: |
| 587 | ci->max_port = 2; |
| 588 | break; |
| 589 | #if 0 |
| 590 | case 0x7: /* not built, but could be... */ |
| 591 | ci->max_port = 3; |
| 592 | break; |
| 593 | #endif |
| 594 | case 0xf: |
| 595 | ci->max_port = 4; |
| 596 | break; |
| 597 | default: |
| 598 | ci->max_port = 0; |
Joe Perches | e6e4d05 | 2010-05-03 11:02:44 -0700 | [diff] [blame] | 599 | pr_warning("%s: illegal port configuration (%x)\n", |
| 600 | ci->devname, pmsk); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 601 | return SBE_DRVR_FAIL; |
| 602 | } |
| 603 | #ifdef SBE_MAP_DEBUG |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 604 | pr_info(">> %s: c4_get_build - pmsk %x max_port %x\n", |
| 605 | ci->devname, pmsk, ci->max_port); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 606 | #endif |
| 607 | } |
| 608 | |
| 609 | for (portnum = 0; portnum < ci->max_port; portnum++) |
| 610 | { |
| 611 | pi = &ci->port[portnum]; |
| 612 | pi->up = ci; |
| 613 | pi->sr_last = 0xffffffff; |
| 614 | pi->p.port_mode = CFG_FRAME_SF; /* T1 B8ZS, the default */ |
| 615 | pi->p.portP = (CFG_CLK_PORT_EXTERNAL | CFG_LBO_LH0); /* T1 defaults */ |
| 616 | |
| 617 | OS_sem_init (&pi->sr_sem_busy, SEM_AVAILABLE); |
| 618 | OS_sem_init (&pi->sr_sem_wait, SEM_TAKEN); |
| 619 | |
| 620 | for (j = 0; j < 32; j++) |
| 621 | { |
| 622 | pi->fifomap[j] = -1; |
| 623 | pi->tsm[j] = 0; /* no assignments, all available */ |
| 624 | } |
| 625 | |
| 626 | /* allocate channel structures for this port */ |
| 627 | for (j = 0; j < MUSYCC_NCHANS; j++) |
| 628 | { |
| 629 | ch = OS_kmalloc (sizeof (mch_t)); |
| 630 | if (ch) |
| 631 | { |
| 632 | pi->chan[j] = ch; |
| 633 | ch->state = UNASSIGNED; |
| 634 | ch->up = pi; |
| 635 | ch->gchan = (-1); /* channel assignment not yet known */ |
| 636 | ch->channum = (-1); /* channel assignment not yet known */ |
| 637 | ch->p.card = ci->brdno; |
| 638 | ch->p.port = portnum; |
| 639 | ch->p.channum = (-1); /* channel assignment not yet known */ |
| 640 | ch->p.mode_56k = 0; /* default is 64kbps mode */ |
| 641 | } else |
| 642 | { |
Joe Perches | e6e4d05 | 2010-05-03 11:02:44 -0700 | [diff] [blame] | 643 | pr_warning("failed mch_t malloc, port %d channel %d size %u.\n", |
| 644 | portnum, j, (unsigned int) sizeof (mch_t)); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 645 | break; |
| 646 | } |
| 647 | } |
| 648 | } |
| 649 | |
| 650 | |
| 651 | { |
| 652 | /* |
| 653 | * Set LEDs through their paces to supply visual proof that LEDs are |
| 654 | * functional and not burnt out nor broken. |
| 655 | * |
| 656 | * YELLOW + GREEN -> OFF. |
| 657 | */ |
| 658 | |
| 659 | pci_write_32 ((u_int32_t *) &ci->cpldbase->leds, |
| 660 | PMCC4_CPLD_LED_GREEN | PMCC4_CPLD_LED_YELLOW); |
| 661 | OS_uwait (750000, "leds"); |
| 662 | pci_write_32 ((u_int32_t *) &ci->cpldbase->leds, PMCC4_CPLD_LED_OFF); |
| 663 | } |
| 664 | |
| 665 | OS_init_watchdog (&ci->wd, (void (*) (void *)) c4_watchdog, ci, WATCHDOG_TIMEOUT); |
| 666 | return SBE_DRVR_SUCCESS; |
| 667 | } |
| 668 | |
| 669 | |
| 670 | /* better be fully setup to handle interrupts when you call this */ |
| 671 | |
| 672 | status_t __init |
| 673 | c4_init2 (ci_t * ci) |
| 674 | { |
| 675 | status_t ret; |
| 676 | |
| 677 | /* PORT POINT: this routine generates first interrupt */ |
| 678 | if ((ret = musycc_init (ci)) != SBE_DRVR_SUCCESS) |
| 679 | return ret; |
| 680 | |
| 681 | #if 0 |
| 682 | ci->p.framing_type = FRAMING_CBP; |
| 683 | ci->p.h110enable = 1; |
| 684 | #if 0 |
| 685 | ci->p.hypersize = 0; |
| 686 | #else |
| 687 | hyperdummy = 0; |
| 688 | #endif |
| 689 | ci->p.clock = 0; /* Use internal clocking until set to |
| 690 | * external */ |
| 691 | c4_card_set_params (ci, &ci->p); |
| 692 | #endif |
| 693 | OS_start_watchdog (&ci->wd); |
| 694 | return SBE_DRVR_SUCCESS; |
| 695 | } |
| 696 | |
| 697 | |
| 698 | /* This function sets the loopback mode (or clears it, as the case may be). */ |
| 699 | |
| 700 | int |
| 701 | c4_loop_port (ci_t * ci, int portnum, u_int8_t cmd) |
| 702 | { |
| 703 | comet_t *comet; |
| 704 | volatile u_int32_t loopValue; |
| 705 | |
| 706 | comet = ci->port[portnum].cometbase; |
| 707 | loopValue = pci_read_32 ((u_int32_t *) &comet->mdiag) & COMET_MDIAG_LBMASK; |
| 708 | |
| 709 | if (cmd & COMET_LBCMD_READ) |
| 710 | return loopValue; /* return the read value */ |
| 711 | |
| 712 | if (loopValue != cmd) |
| 713 | { |
| 714 | switch (cmd) |
| 715 | { |
| 716 | case COMET_MDIAG_LINELB: |
| 717 | /* set(SF)loopback down (turn off) code length to 6 bits */ |
| 718 | pci_write_32 ((u_int32_t *) &comet->ibcd_cfg, 0x05); |
| 719 | break; |
| 720 | case COMET_MDIAG_LBOFF: |
| 721 | /* set (SF) loopback up (turn on) code length to 5 bits */ |
| 722 | pci_write_32 ((u_int32_t *) &comet->ibcd_cfg, 0x00); |
| 723 | break; |
| 724 | } |
| 725 | |
| 726 | pci_write_32 ((u_int32_t *) &comet->mdiag, cmd); |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 727 | if (cxt1e1_log_level >= LOG_WARN) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 728 | pr_info("%s: loopback mode changed to %2x from %2x on Port %d\n", |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 729 | ci->devname, cmd, loopValue, portnum); |
| 730 | loopValue = pci_read_32 ((u_int32_t *) &comet->mdiag) & COMET_MDIAG_LBMASK; |
| 731 | if (loopValue != cmd) |
| 732 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 733 | if (cxt1e1_log_level >= LOG_ERROR) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 734 | pr_info("%s: write to loop register failed, unknown state for Port %d\n", |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 735 | ci->devname, portnum); |
| 736 | } |
| 737 | } else |
| 738 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 739 | if (cxt1e1_log_level >= LOG_WARN) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 740 | pr_info("%s: loopback already in that mode (%2x)\n", |
| 741 | ci->devname, loopValue); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 742 | } |
| 743 | return 0; |
| 744 | } |
| 745 | |
| 746 | |
| 747 | /* c4_frame_rw: read or write the comet register specified |
| 748 | * (modifies use of port_param to non-standard use of struct) |
| 749 | * Specifically: |
| 750 | * pp.portnum (one guess) |
| 751 | * pp.port_mode offset of register |
| 752 | * pp.portP write (or not, i.e. read) |
| 753 | * pp.portStatus write value |
| 754 | * BTW: |
| 755 | * pp.portStatus also used to return read value |
| 756 | * pp.portP also used during write, to return old reg value |
| 757 | */ |
| 758 | |
| 759 | status_t |
| 760 | c4_frame_rw (ci_t * ci, struct sbecom_port_param * pp) |
| 761 | { |
| 762 | comet_t *comet; |
| 763 | volatile u_int32_t data; |
| 764 | |
| 765 | if (pp->portnum >= ci->max_port)/* sanity check */ |
| 766 | return ENXIO; |
| 767 | |
| 768 | comet = ci->port[pp->portnum].cometbase; |
| 769 | data = pci_read_32 ((u_int32_t *) comet + pp->port_mode) & 0xff; |
| 770 | |
| 771 | if (pp->portP) |
| 772 | { /* control says this is a register |
| 773 | * _write_ */ |
| 774 | if (pp->portStatus == data) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 775 | pr_info("%s: Port %d already that value! Writing again anyhow.\n", |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 776 | ci->devname, pp->portnum); |
| 777 | pp->portP = (u_int8_t) data; |
| 778 | pci_write_32 ((u_int32_t *) comet + pp->port_mode, |
| 779 | pp->portStatus); |
| 780 | data = pci_read_32 ((u_int32_t *) comet + pp->port_mode) & 0xff; |
| 781 | } |
| 782 | pp->portStatus = (u_int8_t) data; |
| 783 | return 0; |
| 784 | } |
| 785 | |
| 786 | |
| 787 | /* c4_pld_rw: read or write the pld register specified |
| 788 | * (modifies use of port_param to non-standard use of struct) |
| 789 | * Specifically: |
| 790 | * pp.port_mode offset of register |
| 791 | * pp.portP write (or not, i.e. read) |
| 792 | * pp.portStatus write value |
| 793 | * BTW: |
| 794 | * pp.portStatus also used to return read value |
| 795 | * pp.portP also used during write, to return old reg value |
| 796 | */ |
| 797 | |
| 798 | status_t |
| 799 | c4_pld_rw (ci_t * ci, struct sbecom_port_param * pp) |
| 800 | { |
| 801 | volatile u_int32_t *regaddr; |
| 802 | volatile u_int32_t data; |
| 803 | int regnum = pp->port_mode; |
| 804 | |
| 805 | regaddr = (u_int32_t *) ci->cpldbase + regnum; |
| 806 | data = pci_read_32 ((u_int32_t *) regaddr) & 0xff; |
| 807 | |
| 808 | if (pp->portP) |
| 809 | { /* control says this is a register |
| 810 | * _write_ */ |
| 811 | pp->portP = (u_int8_t) data; |
| 812 | pci_write_32 ((u_int32_t *) regaddr, pp->portStatus); |
| 813 | data = pci_read_32 ((u_int32_t *) regaddr) & 0xff; |
| 814 | } |
| 815 | pp->portStatus = (u_int8_t) data; |
| 816 | return 0; |
| 817 | } |
| 818 | |
| 819 | /* c4_musycc_rw: read or write the musycc register specified |
| 820 | * (modifies use of port_param to non-standard use of struct) |
| 821 | * Specifically: |
| 822 | * mcp.RWportnum port number and write indication bit (0x80) |
| 823 | * mcp.offset offset of register |
| 824 | * mcp.value write value going in and read value returning |
| 825 | */ |
| 826 | |
| 827 | /* PORT POINT: TX Subchannel Map registers are write-only |
| 828 | * areas within the MUSYCC and always return FF */ |
| 829 | /* PORT POINT: regram and reg structures are minorly different and <offset> ioctl |
| 830 | * settings are aligned with the <reg> struct musycc_globalr{} usage. |
| 831 | * Also, regram is separately allocated shared memory, allocated for each port. |
| 832 | * PORT POINT: access offsets of 0x6000 for Msg Cfg Desc Tbl are for 4-port MUSYCC |
| 833 | * only. (An 8-port MUSYCC has 0x16000 offsets for accessing its upper 4 tables.) |
| 834 | */ |
| 835 | |
| 836 | status_t |
| 837 | c4_musycc_rw (ci_t * ci, struct c4_musycc_param * mcp) |
| 838 | { |
| 839 | mpi_t *pi; |
| 840 | volatile u_int32_t *dph; /* hardware implemented register */ |
| 841 | u_int32_t *dpr = 0; /* RAM image of registers for group command |
| 842 | * usage */ |
| 843 | int offset = mcp->offset % 0x800; /* group relative address |
| 844 | * offset, mcp->portnum is |
| 845 | * not used */ |
| 846 | int portnum, ramread = 0; |
| 847 | volatile u_int32_t data; |
| 848 | |
| 849 | /* |
| 850 | * Sanity check hardware accessibility. The 0x6000 portion handles port |
| 851 | * numbers associated with Msg Descr Tbl decoding. |
| 852 | */ |
| 853 | portnum = (mcp->offset % 0x6000) / 0x800; |
| 854 | if (portnum >= ci->max_port) |
| 855 | return ENXIO; |
| 856 | pi = &ci->port[portnum]; |
| 857 | if (mcp->offset >= 0x6000) |
| 858 | offset += 0x6000; /* put back in MsgCfgDesc address offset */ |
| 859 | dph = (u_int32_t *) ((u_long) pi->reg + offset); |
| 860 | |
| 861 | /* read of TX are from RAM image, since hardware returns FF */ |
| 862 | dpr = (u_int32_t *) ((u_long) pi->regram + offset); |
| 863 | if (mcp->offset < 0x6000) /* non MsgDesc Tbl accesses might require |
| 864 | * RAM access */ |
| 865 | { |
| 866 | if (offset >= 0x200 && offset < 0x380) |
| 867 | ramread = 1; |
| 868 | if (offset >= 0x10 && offset < 0x200) |
| 869 | ramread = 1; |
| 870 | } |
| 871 | /* read register from RAM or hardware, depending... */ |
| 872 | if (ramread) |
| 873 | { |
| 874 | data = *dpr; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 875 | //pr_info("c4_musycc_rw: RAM addr %p read data %x (portno %x offset %x RAM ramread %x)\n", dpr, data, portnum, offset, ramread); /* RLD DEBUG */ |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 876 | } else |
| 877 | { |
| 878 | data = pci_read_32 ((u_int32_t *) dph); |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 879 | //pr_info("c4_musycc_rw: REG addr %p read data %x (portno %x offset %x RAM ramread %x)\n", dph, data, portnum, offset, ramread); /* RLD DEBUG */ |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 880 | } |
| 881 | |
| 882 | |
| 883 | if (mcp->RWportnum & 0x80) |
| 884 | { /* control says this is a register |
| 885 | * _write_ */ |
| 886 | if (mcp->value == data) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 887 | pr_info("%s: musycc grp%d already that value! writing again anyhow.\n", |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 888 | ci->devname, (mcp->RWportnum & 0x7)); |
| 889 | /* write register RAM */ |
| 890 | if (ramread) |
| 891 | *dpr = mcp->value; |
| 892 | /* write hardware register */ |
| 893 | pci_write_32 ((u_int32_t *) dph, mcp->value); |
| 894 | } |
| 895 | mcp->value = data; /* return the read value (or the 'old |
| 896 | * value', if is write) */ |
| 897 | return 0; |
| 898 | } |
| 899 | |
| 900 | status_t |
| 901 | c4_get_port (ci_t * ci, int portnum) |
| 902 | { |
| 903 | if (portnum >= ci->max_port) /* sanity check */ |
| 904 | return ENXIO; |
| 905 | |
| 906 | SD_SEM_TAKE (&ci->sem_wdbusy, "_wd_"); /* only 1 thru here, per |
| 907 | * board */ |
| 908 | checkPorts (ci); |
| 909 | ci->port[portnum].p.portStatus = (u_int8_t) ci->alarmed[portnum]; |
| 910 | ci->alarmed[portnum] &= 0xdf; |
| 911 | SD_SEM_GIVE (&ci->sem_wdbusy); /* release per-board hold */ |
| 912 | return 0; |
| 913 | } |
| 914 | |
| 915 | status_t |
| 916 | c4_set_port (ci_t * ci, int portnum) |
| 917 | { |
| 918 | mpi_t *pi; |
| 919 | struct sbecom_port_param *pp; |
| 920 | int e1mode; |
| 921 | u_int8_t clck; |
| 922 | int i; |
| 923 | |
| 924 | if (portnum >= ci->max_port) /* sanity check */ |
| 925 | return ENXIO; |
| 926 | |
| 927 | pi = &ci->port[portnum]; |
| 928 | pp = &ci->port[portnum].p; |
| 929 | e1mode = IS_FRAME_ANY_E1 (pp->port_mode); |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 930 | if (cxt1e1_log_level >= LOG_MONITOR2) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 931 | { |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 932 | pr_info("%s: c4_set_port[%d]: entered, e1mode = %x, openchans %d.\n", |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 933 | ci->devname, |
| 934 | portnum, e1mode, pi->openchans); |
| 935 | } |
| 936 | if (pi->openchans) |
| 937 | return EBUSY; /* group needs initialization only for |
| 938 | * first channel of a group */ |
| 939 | |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 940 | { |
| 941 | status_t ret; |
| 942 | |
| 943 | if ((ret = c4_wq_port_init (pi))) /* create/init |
| 944 | * workqueue_struct */ |
| 945 | return (ret); |
| 946 | } |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 947 | |
| 948 | init_comet (ci, pi->cometbase, pp->port_mode, 1 /* clockmaster == true */ , pp->portP); |
| 949 | clck = pci_read_32 ((u_int32_t *) &ci->cpldbase->mclk) & PMCC4_CPLD_MCLK_MASK; |
| 950 | if (e1mode) |
| 951 | clck |= 1 << portnum; |
| 952 | else |
| 953 | clck &= 0xf ^ (1 << portnum); |
| 954 | |
| 955 | pci_write_32 ((u_int32_t *) &ci->cpldbase->mclk, clck); |
| 956 | pci_write_32 ((u_int32_t *) &ci->cpldbase->mcsr, PMCC4_CPLD_MCSR_IND); |
| 957 | pci_write_32 ((u_int32_t *) &pi->reg->gbp, OS_vtophys (pi->regram)); |
| 958 | |
| 959 | /*********************************************************************/ |
| 960 | /* ERRATA: If transparent mode is used, do not set OOFMP_DISABLE bit */ |
| 961 | /*********************************************************************/ |
| 962 | |
| 963 | pi->regram->grcd = |
| 964 | __constant_cpu_to_le32 (MUSYCC_GRCD_RX_ENABLE | |
| 965 | MUSYCC_GRCD_TX_ENABLE | |
| 966 | MUSYCC_GRCD_OOFMP_DISABLE | |
| 967 | MUSYCC_GRCD_SF_ALIGN | /* per MUSYCC ERRATA, |
| 968 | * for T1 * fix */ |
| 969 | MUSYCC_GRCD_COFAIRQ_DISABLE | |
| 970 | MUSYCC_GRCD_MC_ENABLE | |
| 971 | (MUSYCC_GRCD_POLLTH_32 << MUSYCC_GRCD_POLLTH_SHIFT)); |
| 972 | |
| 973 | pi->regram->pcd = |
| 974 | __constant_cpu_to_le32 ((e1mode ? 1 : 0) | |
| 975 | MUSYCC_PCD_TXSYNC_RISING | |
| 976 | MUSYCC_PCD_RXSYNC_RISING | |
| 977 | MUSYCC_PCD_RXDATA_RISING); |
| 978 | |
| 979 | /* Message length descriptor */ |
Bob Beers | c694ed8 | 2010-10-16 18:06:36 -0400 | [diff] [blame] | 980 | pi->regram->mld = __constant_cpu_to_le32 (cxt1e1_max_mru | (cxt1e1_max_mru << 16)); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 981 | |
| 982 | /* tsm algorithm */ |
| 983 | for (i = 0; i < 32; i++) |
| 984 | { |
| 985 | |
| 986 | /*** ASSIGNMENT NOTES: ***/ |
| 987 | /*** Group's channel ZERO unavailable if E1. ***/ |
| 988 | /*** Group's channel 16 unavailable if E1 CAS. ***/ |
| 989 | /*** Group's channels 24-31 unavailable if T1. ***/ |
| 990 | |
| 991 | if (((i == 0) && e1mode) || |
| 992 | ((i == 16) && ((pp->port_mode == CFG_FRAME_E1CRC_CAS) || (pp->port_mode == CFG_FRAME_E1CRC_CAS_AMI))) |
| 993 | || ((i > 23) && (!e1mode))) |
| 994 | { |
| 995 | pi->tsm[i] = 0xff; /* make tslot unavailable for this mode */ |
| 996 | } else |
| 997 | { |
| 998 | pi->tsm[i] = 0x00; /* make tslot available for assignment */ |
| 999 | } |
| 1000 | } |
| 1001 | for (i = 0; i < MUSYCC_NCHANS; i++) |
| 1002 | { |
| 1003 | pi->regram->ttsm[i] = 0; |
| 1004 | pi->regram->rtsm[i] = 0; |
| 1005 | } |
| 1006 | FLUSH_MEM_WRITE (); |
| 1007 | musycc_serv_req (pi, SR_GROUP_INIT | SR_RX_DIRECTION); |
| 1008 | musycc_serv_req (pi, SR_GROUP_INIT | SR_TX_DIRECTION); |
| 1009 | |
| 1010 | musycc_init_mdt (pi); |
| 1011 | |
| 1012 | pi->group_is_set = 1; |
| 1013 | pi->p = *pp; |
| 1014 | return 0; |
| 1015 | } |
| 1016 | |
| 1017 | |
| 1018 | unsigned int max_int = 0; |
| 1019 | |
| 1020 | status_t |
| 1021 | c4_new_chan (ci_t * ci, int portnum, int channum, void *user) |
| 1022 | { |
| 1023 | mpi_t *pi; |
| 1024 | mch_t *ch; |
| 1025 | int gchan; |
| 1026 | |
| 1027 | if (c4_find_chan (channum)) /* a new channel shouldn't already exist */ |
| 1028 | return EEXIST; |
| 1029 | |
| 1030 | if (portnum >= ci->max_port) /* sanity check */ |
| 1031 | return ENXIO; |
| 1032 | |
| 1033 | pi = &(ci->port[portnum]); |
| 1034 | /* find any available channel within this port */ |
| 1035 | for (gchan = 0; gchan < MUSYCC_NCHANS; gchan++) |
| 1036 | { |
| 1037 | ch = pi->chan[gchan]; |
| 1038 | if (ch && ch->state == UNASSIGNED) /* no assignment is good! */ |
| 1039 | break; |
| 1040 | } |
| 1041 | if (gchan == MUSYCC_NCHANS) /* exhausted table, all were assigned */ |
| 1042 | return ENFILE; |
| 1043 | |
| 1044 | ch->up = pi; |
| 1045 | |
| 1046 | /* NOTE: mch_t already cleared during OS_kmalloc() */ |
| 1047 | ch->state = DOWN; |
| 1048 | ch->user = user; |
| 1049 | ch->gchan = gchan; |
| 1050 | ch->channum = channum; /* mark our channel assignment */ |
| 1051 | ch->p.channum = channum; |
| 1052 | #if 1 |
| 1053 | ch->p.card = ci->brdno; |
| 1054 | ch->p.port = portnum; |
| 1055 | #endif |
| 1056 | ch->p.chan_mode = CFG_CH_PROTO_HDLC_FCS16; |
| 1057 | ch->p.idlecode = CFG_CH_FLAG_7E; |
| 1058 | ch->p.pad_fill_count = 2; |
| 1059 | spin_lock_init (&ch->ch_rxlock); |
| 1060 | spin_lock_init (&ch->ch_txlock); |
| 1061 | |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1062 | { |
| 1063 | status_t ret; |
| 1064 | |
| 1065 | if ((ret = c4_wk_chan_init (pi, ch))) |
| 1066 | return ret; |
| 1067 | } |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1068 | |
| 1069 | /* save off interface assignments which bound a board */ |
| 1070 | if (ci->first_if == 0) /* first channel registered is assumed to |
| 1071 | * be the lowest channel */ |
| 1072 | { |
| 1073 | ci->first_if = ci->last_if = user; |
| 1074 | ci->first_channum = ci->last_channum = channum; |
| 1075 | } else |
| 1076 | { |
| 1077 | ci->last_if = user; |
| 1078 | if (ci->last_channum < channum) /* higher number channel found */ |
| 1079 | ci->last_channum = channum; |
| 1080 | } |
| 1081 | return 0; |
| 1082 | } |
| 1083 | |
| 1084 | status_t |
| 1085 | c4_del_chan (int channum) |
| 1086 | { |
| 1087 | mch_t *ch; |
| 1088 | |
| 1089 | if (!(ch = c4_find_chan (channum))) |
| 1090 | return ENOENT; |
| 1091 | if (ch->state == UP) |
| 1092 | musycc_chan_down ((ci_t *) 0, channum); |
| 1093 | ch->state = UNASSIGNED; |
| 1094 | ch->gchan = (-1); |
| 1095 | ch->channum = (-1); |
| 1096 | ch->p.channum = (-1); |
| 1097 | return 0; |
| 1098 | } |
| 1099 | |
| 1100 | status_t |
| 1101 | c4_del_chan_stats (int channum) |
| 1102 | { |
| 1103 | mch_t *ch; |
| 1104 | |
| 1105 | if (!(ch = c4_find_chan (channum))) |
| 1106 | return ENOENT; |
| 1107 | |
| 1108 | memset (&ch->s, 0, sizeof (struct sbecom_chan_stats)); |
| 1109 | return 0; |
| 1110 | } |
| 1111 | |
| 1112 | |
| 1113 | status_t |
| 1114 | c4_set_chan (int channum, struct sbecom_chan_param * p) |
| 1115 | { |
| 1116 | mch_t *ch; |
| 1117 | int i, x = 0; |
| 1118 | |
| 1119 | if (!(ch = c4_find_chan (channum))) |
| 1120 | return ENOENT; |
| 1121 | |
| 1122 | #if 1 |
| 1123 | if (ch->p.card != p->card || |
| 1124 | ch->p.port != p->port || |
| 1125 | ch->p.channum != p->channum) |
| 1126 | return EINVAL; |
| 1127 | #endif |
| 1128 | |
| 1129 | if (!(ch->up->group_is_set)) |
| 1130 | { |
| 1131 | return EIO; /* out of order, SET_PORT command |
| 1132 | * required prior to first group's |
| 1133 | * SET_CHAN command */ |
| 1134 | } |
| 1135 | /* |
| 1136 | * Check for change of parameter settings in order to invoke closing of |
| 1137 | * channel prior to hardware poking. |
| 1138 | */ |
| 1139 | |
| 1140 | if (ch->p.status != p->status || ch->p.chan_mode != p->chan_mode || |
| 1141 | ch->p.data_inv != p->data_inv || ch->p.intr_mask != p->intr_mask || |
| 1142 | ch->txd_free < ch->txd_num) /* to clear out queued messages */ |
| 1143 | x = 1; /* we have a change requested */ |
| 1144 | for (i = 0; i < 32; i++) /* check for timeslot mapping changes */ |
| 1145 | if (ch->p.bitmask[i] != p->bitmask[i]) |
| 1146 | x = 1; /* we have a change requested */ |
| 1147 | ch->p = *p; |
| 1148 | if (x && (ch->state == UP)) /* if change request and channel is |
| 1149 | * open... */ |
| 1150 | { |
| 1151 | status_t ret; |
| 1152 | |
| 1153 | if ((ret = musycc_chan_down ((ci_t *) 0, channum))) |
| 1154 | return ret; |
| 1155 | if ((ret = c4_chan_up (ch->up->up, channum))) |
| 1156 | return ret; |
| 1157 | sd_enable_xmit (ch->user); /* re-enable to catch flow controlled |
| 1158 | * channel */ |
| 1159 | } |
| 1160 | return 0; |
| 1161 | } |
| 1162 | |
| 1163 | |
| 1164 | status_t |
| 1165 | c4_get_chan (int channum, struct sbecom_chan_param * p) |
| 1166 | { |
| 1167 | mch_t *ch; |
| 1168 | |
| 1169 | if (!(ch = c4_find_chan (channum))) |
| 1170 | return ENOENT; |
| 1171 | *p = ch->p; |
| 1172 | return 0; |
| 1173 | } |
| 1174 | |
| 1175 | status_t |
| 1176 | c4_get_chan_stats (int channum, struct sbecom_chan_stats * p) |
| 1177 | { |
| 1178 | mch_t *ch; |
| 1179 | |
| 1180 | if (!(ch = c4_find_chan (channum))) |
| 1181 | return ENOENT; |
| 1182 | *p = ch->s; |
| 1183 | p->tx_pending = atomic_read (&ch->tx_pending); |
| 1184 | return 0; |
| 1185 | } |
| 1186 | |
| 1187 | STATIC int |
| 1188 | c4_fifo_alloc (mpi_t * pi, int chan, int *len) |
| 1189 | { |
| 1190 | int i, l = 0, start = 0, max = 0, maxstart = 0; |
| 1191 | |
| 1192 | for (i = 0; i < 32; i++) |
| 1193 | { |
| 1194 | if (pi->fifomap[i] != -1) |
| 1195 | { |
| 1196 | l = 0; |
| 1197 | start = i + 1; |
| 1198 | continue; |
| 1199 | } |
| 1200 | ++l; |
| 1201 | if (l > max) |
| 1202 | { |
| 1203 | max = l; |
| 1204 | maxstart = start; |
| 1205 | } |
| 1206 | if (max == *len) |
| 1207 | break; |
| 1208 | } |
| 1209 | if (max != *len) |
| 1210 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 1211 | if (cxt1e1_log_level >= LOG_WARN) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1212 | pr_info("%s: wanted to allocate %d fifo space, but got only %d\n", |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1213 | pi->up->devname, *len, max); |
| 1214 | *len = max; |
| 1215 | } |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 1216 | if (cxt1e1_log_level >= LOG_DEBUG) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1217 | pr_info("%s: allocated %d fifo at %d for channel %d/%d\n", |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1218 | pi->up->devname, max, start, chan, pi->p.portnum); |
| 1219 | for (i = maxstart; i < (maxstart + max); i++) |
| 1220 | pi->fifomap[i] = chan; |
| 1221 | return start; |
| 1222 | } |
| 1223 | |
| 1224 | void |
| 1225 | c4_fifo_free (mpi_t * pi, int chan) |
| 1226 | { |
| 1227 | int i; |
| 1228 | |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 1229 | if (cxt1e1_log_level >= LOG_DEBUG) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1230 | pr_info("%s: deallocated fifo for channel %d/%d\n", |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1231 | pi->up->devname, chan, pi->p.portnum); |
| 1232 | for (i = 0; i < 32; i++) |
| 1233 | if (pi->fifomap[i] == chan) |
| 1234 | pi->fifomap[i] = -1; |
| 1235 | } |
| 1236 | |
| 1237 | |
| 1238 | status_t |
| 1239 | c4_chan_up (ci_t * ci, int channum) |
| 1240 | { |
| 1241 | mpi_t *pi; |
| 1242 | mch_t *ch; |
| 1243 | struct mbuf *m; |
| 1244 | struct mdesc *md; |
| 1245 | int nts, nbuf, txnum, rxnum; |
| 1246 | int addr, i, j, gchan; |
| 1247 | u_int32_t tmp; /* for optimizing conversion across BE |
| 1248 | * platform */ |
| 1249 | |
| 1250 | if (!(ch = c4_find_chan (channum))) |
| 1251 | return ENOENT; |
| 1252 | if (ch->state == UP) |
| 1253 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 1254 | if (cxt1e1_log_level >= LOG_MONITOR) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1255 | pr_info("%s: channel already UP, graceful early exit\n", |
| 1256 | ci->devname); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1257 | return 0; |
| 1258 | } |
| 1259 | pi = ch->up; |
| 1260 | gchan = ch->gchan; |
| 1261 | /* find nts ('number of timeslots') */ |
| 1262 | nts = 0; |
| 1263 | for (i = 0; i < 32; i++) |
| 1264 | { |
| 1265 | if (ch->p.bitmask[i] & pi->tsm[i]) |
| 1266 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 1267 | if (1 || cxt1e1_log_level >= LOG_WARN) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1268 | { |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1269 | pr_info("%s: c4_chan_up[%d] EINVAL (attempt to cfg in-use or unavailable TimeSlot[%d])\n", |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1270 | ci->devname, channum, i); |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1271 | pr_info("+ ask4 %x, currently %x\n", |
| 1272 | ch->p.bitmask[i], pi->tsm[i]); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1273 | } |
| 1274 | return EINVAL; |
| 1275 | } |
| 1276 | for (j = 0; j < 8; j++) |
| 1277 | if (ch->p.bitmask[i] & (1 << j)) |
| 1278 | nts++; |
| 1279 | } |
| 1280 | |
| 1281 | nbuf = nts / 8 ? nts / 8 : 1; |
| 1282 | if (!nbuf) |
| 1283 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 1284 | /* if( cxt1e1_log_level >= LOG_WARN) */ |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1285 | pr_info("%s: c4_chan_up[%d] ENOBUFS (no TimeSlots assigned)\n", |
| 1286 | ci->devname, channum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1287 | return ENOBUFS; /* this should not happen */ |
| 1288 | } |
| 1289 | addr = c4_fifo_alloc (pi, gchan, &nbuf); |
| 1290 | ch->state = UP; |
| 1291 | |
| 1292 | /* Setup the Time Slot Map */ |
| 1293 | musycc_update_timeslots (pi); |
| 1294 | |
| 1295 | /* ch->tx_limit = nts; */ |
| 1296 | ch->s.tx_pending = 0; |
| 1297 | |
| 1298 | /* Set Channel Configuration Descriptors */ |
| 1299 | { |
| 1300 | u_int32_t ccd; |
| 1301 | |
| 1302 | ccd = musycc_chan_proto (ch->p.chan_mode) << MUSYCC_CCD_PROTO_SHIFT; |
| 1303 | if ((ch->p.chan_mode == CFG_CH_PROTO_ISLP_MODE) || |
| 1304 | (ch->p.chan_mode == CFG_CH_PROTO_TRANS)) |
| 1305 | { |
| 1306 | ccd |= MUSYCC_CCD_FCS_XFER; /* Non FSC Mode */ |
| 1307 | } |
| 1308 | ccd |= 2 << MUSYCC_CCD_MAX_LENGTH; /* Select second MTU */ |
| 1309 | ccd |= ch->p.intr_mask; |
| 1310 | ccd |= addr << MUSYCC_CCD_BUFFER_LOC; |
| 1311 | if (ch->p.chan_mode == CFG_CH_PROTO_TRANS) |
| 1312 | ccd |= (nbuf) << MUSYCC_CCD_BUFFER_LENGTH; |
| 1313 | else |
| 1314 | ccd |= (nbuf - 1) << MUSYCC_CCD_BUFFER_LENGTH; |
| 1315 | |
| 1316 | if (ch->p.data_inv & CFG_CH_DINV_TX) |
| 1317 | ccd |= MUSYCC_CCD_INVERT_DATA; /* Invert data */ |
| 1318 | pi->regram->tcct[gchan] = cpu_to_le32 (ccd); |
| 1319 | |
| 1320 | if (ch->p.data_inv & CFG_CH_DINV_RX) |
| 1321 | ccd |= MUSYCC_CCD_INVERT_DATA; /* Invert data */ |
| 1322 | else |
| 1323 | ccd &= ~MUSYCC_CCD_INVERT_DATA; /* take away data inversion */ |
| 1324 | pi->regram->rcct[gchan] = cpu_to_le32 (ccd); |
| 1325 | FLUSH_MEM_WRITE (); |
| 1326 | } |
| 1327 | |
| 1328 | /* Reread the Channel Configuration Descriptor for this channel */ |
| 1329 | musycc_serv_req (pi, SR_CHANNEL_CONFIG | SR_RX_DIRECTION | gchan); |
| 1330 | musycc_serv_req (pi, SR_CHANNEL_CONFIG | SR_TX_DIRECTION | gchan); |
| 1331 | |
| 1332 | /* |
| 1333 | * Figure out how many buffers we want. If the customer has changed from |
| 1334 | * the defaults, then use the changed values. Otherwise, use Transparent |
| 1335 | * mode's specific minimum default settings. |
| 1336 | */ |
| 1337 | if (ch->p.chan_mode == CFG_CH_PROTO_TRANS) |
| 1338 | { |
| 1339 | if (max_rxdesc_used == max_rxdesc_default) /* use default setting */ |
| 1340 | max_rxdesc_used = MUSYCC_RXDESC_TRANS; |
| 1341 | if (max_txdesc_used == max_txdesc_default) /* use default setting */ |
| 1342 | max_txdesc_used = MUSYCC_TXDESC_TRANS; |
| 1343 | } |
| 1344 | /* |
| 1345 | * Increase counts when hyperchanneling, since this implies an increase |
| 1346 | * in throughput per channel |
| 1347 | */ |
| 1348 | rxnum = max_rxdesc_used + (nts / 4); |
| 1349 | txnum = max_txdesc_used + (nts / 4); |
| 1350 | |
| 1351 | #if 0 |
| 1352 | /* DEBUG INFO */ |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 1353 | if (cxt1e1_log_level >= LOG_MONITOR) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1354 | pr_info("%s: mode %x rxnum %d (rxused %d def %d) txnum %d (txused %d def %d)\n", |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1355 | ci->devname, ch->p.chan_mode, |
| 1356 | rxnum, max_rxdesc_used, max_rxdesc_default, |
| 1357 | txnum, max_txdesc_used, max_txdesc_default); |
| 1358 | #endif |
| 1359 | |
| 1360 | ch->rxd_num = rxnum; |
| 1361 | ch->txd_num = txnum; |
| 1362 | ch->rxix_irq_srv = 0; |
| 1363 | |
| 1364 | ch->mdr = OS_kmalloc (sizeof (struct mdesc) * rxnum); |
| 1365 | ch->mdt = OS_kmalloc (sizeof (struct mdesc) * txnum); |
| 1366 | if (ch->p.chan_mode == CFG_CH_PROTO_TRANS) |
Bob Beers | c694ed8 | 2010-10-16 18:06:36 -0400 | [diff] [blame] | 1367 | tmp = __constant_cpu_to_le32 (cxt1e1_max_mru | EOBIRQ_ENABLE); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1368 | else |
Bob Beers | c694ed8 | 2010-10-16 18:06:36 -0400 | [diff] [blame] | 1369 | tmp = __constant_cpu_to_le32 (cxt1e1_max_mru); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1370 | |
| 1371 | for (i = 0, md = ch->mdr; i < rxnum; i++, md++) |
| 1372 | { |
| 1373 | if (i == (rxnum - 1)) |
| 1374 | { |
| 1375 | md->snext = &ch->mdr[0];/* wrapness */ |
| 1376 | } else |
| 1377 | { |
| 1378 | md->snext = &ch->mdr[i + 1]; |
| 1379 | } |
| 1380 | md->next = cpu_to_le32 (OS_vtophys (md->snext)); |
| 1381 | |
Bob Beers | c694ed8 | 2010-10-16 18:06:36 -0400 | [diff] [blame] | 1382 | if (!(m = OS_mem_token_alloc (cxt1e1_max_mru))) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1383 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 1384 | if (cxt1e1_log_level >= LOG_MONITOR) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1385 | pr_info("%s: c4_chan_up[%d] - token alloc failure, size = %d.\n", |
Bob Beers | c694ed8 | 2010-10-16 18:06:36 -0400 | [diff] [blame] | 1386 | ci->devname, channum, cxt1e1_max_mru); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1387 | goto errfree; |
| 1388 | } |
| 1389 | md->mem_token = m; |
| 1390 | md->data = cpu_to_le32 (OS_vtophys (OS_mem_token_data (m))); |
| 1391 | md->status = tmp | MUSYCC_RX_OWNED; /* MUSYCC owns RX descriptor ** |
| 1392 | * CODING NOTE: |
| 1393 | * MUSYCC_RX_OWNED = 0 so no |
| 1394 | * need to byteSwap */ |
| 1395 | } |
| 1396 | |
| 1397 | for (i = 0, md = ch->mdt; i < txnum; i++, md++) |
| 1398 | { |
| 1399 | md->status = HOST_TX_OWNED; /* Host owns TX descriptor ** CODING |
| 1400 | * NOTE: HOST_TX_OWNED = 0 so no need to |
| 1401 | * byteSwap */ |
| 1402 | md->mem_token = 0; |
| 1403 | md->data = 0; |
| 1404 | if (i == (txnum - 1)) |
| 1405 | { |
| 1406 | md->snext = &ch->mdt[0];/* wrapness */ |
| 1407 | } else |
| 1408 | { |
| 1409 | md->snext = &ch->mdt[i + 1]; |
| 1410 | } |
| 1411 | md->next = cpu_to_le32 (OS_vtophys (md->snext)); |
| 1412 | } |
| 1413 | ch->txd_irq_srv = ch->txd_usr_add = &ch->mdt[0]; |
| 1414 | ch->txd_free = txnum; |
| 1415 | ch->tx_full = 0; |
| 1416 | ch->txd_required = 0; |
| 1417 | |
| 1418 | /* Configure it into the chip */ |
| 1419 | tmp = cpu_to_le32 (OS_vtophys (&ch->mdt[0])); |
| 1420 | pi->regram->thp[gchan] = tmp; |
| 1421 | pi->regram->tmp[gchan] = tmp; |
| 1422 | |
| 1423 | tmp = cpu_to_le32 (OS_vtophys (&ch->mdr[0])); |
| 1424 | pi->regram->rhp[gchan] = tmp; |
| 1425 | pi->regram->rmp[gchan] = tmp; |
| 1426 | |
| 1427 | /* Activate the Channel */ |
| 1428 | FLUSH_MEM_WRITE (); |
| 1429 | if (ch->p.status & RX_ENABLED) |
| 1430 | { |
| 1431 | #ifdef RLD_TRANS_DEBUG |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1432 | pr_info("++ c4_chan_up() CHAN RX ACTIVATE: chan %d\n", ch->channum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1433 | #endif |
| 1434 | ch->ch_start_rx = 0; /* we are restarting RX... */ |
| 1435 | musycc_serv_req (pi, SR_CHANNEL_ACTIVATE | SR_RX_DIRECTION | gchan); |
| 1436 | } |
| 1437 | if (ch->p.status & TX_ENABLED) |
| 1438 | { |
| 1439 | #ifdef RLD_TRANS_DEBUG |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1440 | pr_info("++ c4_chan_up() CHAN TX ACTIVATE: chan %d <delayed>\n", ch->channum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1441 | #endif |
| 1442 | ch->ch_start_tx = CH_START_TX_1ST; /* we are delaying start |
| 1443 | * until receipt from user of |
| 1444 | * first packet to transmit. */ |
| 1445 | } |
| 1446 | ch->status = ch->p.status; |
| 1447 | pi->openchans++; |
| 1448 | return 0; |
| 1449 | |
| 1450 | errfree: |
| 1451 | while (i > 0) |
| 1452 | { |
| 1453 | /* Don't leak all the previously allocated mbufs in this loop */ |
| 1454 | i--; |
| 1455 | OS_mem_token_free (ch->mdr[i].mem_token); |
| 1456 | } |
| 1457 | OS_kfree (ch->mdt); |
| 1458 | ch->mdt = 0; |
| 1459 | ch->txd_num = 0; |
| 1460 | OS_kfree (ch->mdr); |
| 1461 | ch->mdr = 0; |
| 1462 | ch->rxd_num = 0; |
| 1463 | ch->state = DOWN; |
| 1464 | return ENOBUFS; |
| 1465 | } |
| 1466 | |
| 1467 | /* stop the hardware from servicing & interrupting */ |
| 1468 | |
| 1469 | void |
| 1470 | c4_stopwd (ci_t * ci) |
| 1471 | { |
| 1472 | OS_stop_watchdog (&ci->wd); |
| 1473 | SD_SEM_TAKE (&ci->sem_wdbusy, "_stop_"); /* ensure WD not running */ |
| 1474 | SD_SEM_GIVE (&ci->sem_wdbusy); |
| 1475 | } |
| 1476 | |
| 1477 | |
| 1478 | void |
| 1479 | sbecom_get_brdinfo (ci_t * ci, struct sbe_brd_info * bip, u_int8_t *bsn) |
| 1480 | { |
| 1481 | char *np; |
| 1482 | u_int32_t sn = 0; |
| 1483 | int i; |
| 1484 | |
| 1485 | bip->brdno = ci->brdno; /* our board number */ |
| 1486 | bip->brd_id = ci->brd_id; |
| 1487 | bip->brd_hdw_id = ci->hdw_bid; |
| 1488 | bip->brd_chan_cnt = MUSYCC_NCHANS * ci->max_port; /* number of channels |
| 1489 | * being used */ |
| 1490 | bip->brd_port_cnt = ci->max_port; /* number of ports being used */ |
| 1491 | bip->brd_pci_speed = BINFO_PCI_SPEED_unk; /* PCI speed not yet |
| 1492 | * determinable */ |
| 1493 | |
| 1494 | if (ci->first_if) |
| 1495 | { |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1496 | { |
| 1497 | struct net_device *dev; |
| 1498 | |
| 1499 | dev = (struct net_device *) ci->first_if; |
| 1500 | np = (char *) dev->name; |
| 1501 | } |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1502 | strncpy (bip->first_iname, np, CHNM_STRLEN - 1); |
| 1503 | } else |
| 1504 | strcpy (bip->first_iname, "<NULL>"); |
| 1505 | if (ci->last_if) |
| 1506 | { |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1507 | { |
| 1508 | struct net_device *dev; |
| 1509 | |
| 1510 | dev = (struct net_device *) ci->last_if; |
| 1511 | np = (char *) dev->name; |
| 1512 | } |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1513 | strncpy (bip->last_iname, np, CHNM_STRLEN - 1); |
| 1514 | } else |
| 1515 | strcpy (bip->last_iname, "<NULL>"); |
| 1516 | |
| 1517 | if (bsn) |
| 1518 | { |
| 1519 | for (i = 0; i < 3; i++) |
| 1520 | { |
| 1521 | bip->brd_mac_addr[i] = *bsn++; |
| 1522 | } |
| 1523 | for (; i < 6; i++) |
| 1524 | { |
| 1525 | bip->brd_mac_addr[i] = *bsn; |
| 1526 | sn = (sn << 8) | *bsn++; |
| 1527 | } |
| 1528 | } else |
| 1529 | { |
| 1530 | for (i = 0; i < 6; i++) |
| 1531 | bip->brd_mac_addr[i] = 0; |
| 1532 | } |
| 1533 | bip->brd_sn = sn; |
| 1534 | } |
| 1535 | |
| 1536 | |
| 1537 | status_t |
| 1538 | c4_get_iidinfo (ci_t * ci, struct sbe_iid_info * iip) |
| 1539 | { |
| 1540 | struct net_device *dev; |
| 1541 | char *np; |
| 1542 | |
| 1543 | if (!(dev = getuserbychan (iip->channum))) |
| 1544 | return ENOENT; |
| 1545 | |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1546 | np = dev->name; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1547 | strncpy (iip->iname, np, CHNM_STRLEN - 1); |
| 1548 | return 0; |
| 1549 | } |
| 1550 | |
| 1551 | |
| 1552 | #ifdef CONFIG_SBE_PMCC4_NCOMM |
| 1553 | void (*nciInterrupt[MAX_BOARDS][4]) (void); |
| 1554 | extern void wanpmcC4T1E1_hookInterrupt (int cardID, int deviceID, void *handler); |
| 1555 | |
| 1556 | void |
| 1557 | wanpmcC4T1E1_hookInterrupt (int cardID, int deviceID, void *handler) |
| 1558 | { |
| 1559 | if (cardID < MAX_BOARDS) /* sanity check */ |
| 1560 | nciInterrupt[cardID][deviceID] = handler; |
| 1561 | } |
| 1562 | |
| 1563 | irqreturn_t |
| 1564 | c4_ebus_intr_th_handler (void *devp) |
| 1565 | { |
| 1566 | ci_t *ci = (ci_t *) devp; |
| 1567 | volatile u_int32_t ists; |
| 1568 | int handled = 0; |
| 1569 | int brdno; |
| 1570 | |
| 1571 | /* which COMET caused the interrupt */ |
| 1572 | brdno = ci->brdno; |
| 1573 | ists = pci_read_32 ((u_int32_t *) &ci->cpldbase->intr); |
| 1574 | if (ists & PMCC4_CPLD_INTR_CMT_1) |
| 1575 | { |
| 1576 | handled = 0x1; |
| 1577 | if (nciInterrupt[brdno][0] != NULL) |
| 1578 | (*nciInterrupt[brdno][0]) (); |
| 1579 | } |
| 1580 | if (ists & PMCC4_CPLD_INTR_CMT_2) |
| 1581 | { |
| 1582 | handled |= 0x2; |
| 1583 | if (nciInterrupt[brdno][1] != NULL) |
| 1584 | (*nciInterrupt[brdno][1]) (); |
| 1585 | } |
| 1586 | if (ists & PMCC4_CPLD_INTR_CMT_3) |
| 1587 | { |
| 1588 | handled |= 0x4; |
| 1589 | if (nciInterrupt[brdno][2] != NULL) |
| 1590 | (*nciInterrupt[brdno][2]) (); |
| 1591 | } |
| 1592 | if (ists & PMCC4_CPLD_INTR_CMT_4) |
| 1593 | { |
| 1594 | handled |= 0x8; |
| 1595 | if (nciInterrupt[brdno][3] != NULL) |
| 1596 | (*nciInterrupt[brdno][3]) (); |
| 1597 | } |
| 1598 | #if 0 |
| 1599 | /*** Test code just de-implements the asserted interrupt. Alternate |
| 1600 | vendor will supply COMET interrupt handling code herein or such. |
| 1601 | ***/ |
| 1602 | pci_write_32 ((u_int32_t *) &ci->reg->glcd, GCD_MAGIC | MUSYCC_GCD_INTB_DISABLE); |
| 1603 | #endif |
| 1604 | |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1605 | return IRQ_RETVAL (handled); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1606 | } |
| 1607 | |
| 1608 | |
| 1609 | unsigned long |
| 1610 | wanpmcC4T1E1_getBaseAddress (int cardID, int deviceID) |
| 1611 | { |
| 1612 | ci_t *ci; |
| 1613 | unsigned long base = 0; |
| 1614 | |
| 1615 | ci = c4_list; |
| 1616 | while (ci) |
| 1617 | { |
| 1618 | if (ci->brdno == cardID) /* found valid device */ |
| 1619 | { |
| 1620 | if (deviceID < ci->max_port) /* comet is supported */ |
| 1621 | base = ((unsigned long) ci->port[deviceID].cometbase); |
| 1622 | break; |
| 1623 | } |
| 1624 | ci = ci->next; /* next board, if any */ |
| 1625 | } |
| 1626 | return (base); |
| 1627 | } |
| 1628 | |
| 1629 | #endif /*** CONFIG_SBE_PMCC4_NCOMM ***/ |
| 1630 | |
| 1631 | |
| 1632 | /*** End-of-File ***/ |