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> |
Dulshani Gunawardhana | f74a9d6 | 2013-05-21 21:44:35 +0530 | [diff] [blame] | 31 | #include <linux/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 | |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 42 | #define KERN_WARN KERN_WARNING |
| 43 | |
| 44 | /* forward references */ |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 45 | status_t c4_wk_chan_init (mpi_t *, mch_t *); |
| 46 | void c4_wq_port_cleanup (mpi_t *); |
| 47 | status_t c4_wq_port_init (mpi_t *); |
| 48 | |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 49 | int c4_loop_port (ci_t *, int, u_int8_t); |
| 50 | status_t c4_set_port (ci_t *, int); |
| 51 | status_t musycc_chan_down (ci_t *, int); |
| 52 | |
| 53 | u_int32_t musycc_chan_proto (int); |
| 54 | status_t musycc_dump_ring (ci_t *, unsigned int); |
| 55 | status_t __init musycc_init (ci_t *); |
| 56 | void musycc_init_mdt (mpi_t *); |
| 57 | void musycc_serv_req (mpi_t *, u_int32_t); |
| 58 | void musycc_update_timeslots (mpi_t *); |
| 59 | |
| 60 | extern void musycc_update_tx_thp (mch_t *); |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 61 | extern int cxt1e1_log_level; |
Bob Beers | c694ed8 | 2010-10-16 18:06:36 -0400 | [diff] [blame] | 62 | extern int cxt1e1_max_mru; |
| 63 | extern int cxt1e1_max_mtu; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 64 | extern int max_rxdesc_used, max_rxdesc_default; |
| 65 | extern int max_txdesc_used, max_txdesc_default; |
| 66 | |
| 67 | #if defined (__powerpc__) |
| 68 | extern void *memset (void *s, int c, size_t n); |
| 69 | |
| 70 | #endif |
| 71 | |
| 72 | int drvr_state = SBE_DRVR_INIT; |
Sachin Kamat | 360d26e | 2013-09-27 09:36:35 +0530 | [diff] [blame] | 73 | ci_t *c4_list = NULL; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 74 | ci_t *CI; /* dummy pointer to board ZEROE's data - |
| 75 | * DEBUG USAGE */ |
| 76 | |
| 77 | |
| 78 | void |
| 79 | sbecom_set_loglevel (int d) |
| 80 | { |
| 81 | /* |
| 82 | * The code within the following -if- clause is a backdoor debug facility |
| 83 | * which can be used to display the state of a board's channel. |
| 84 | */ |
| 85 | if (d > LOG_DEBUG) |
| 86 | { |
| 87 | unsigned int channum = d - (LOG_DEBUG + 1); /* convert to ZERO |
| 88 | * relativity */ |
| 89 | |
| 90 | (void) musycc_dump_ring ((ci_t *) CI, channum); /* CI implies support |
| 91 | * for card 0 only */ |
| 92 | } else |
| 93 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 94 | if (cxt1e1_log_level != d) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 95 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 96 | pr_info("log level changed from %d to %d\n", cxt1e1_log_level, d); |
| 97 | cxt1e1_log_level = d; /* set new */ |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 98 | } else |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 99 | pr_info("log level is %d\n", cxt1e1_log_level); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 100 | } |
| 101 | } |
| 102 | |
| 103 | |
| 104 | mch_t * |
| 105 | c4_find_chan (int channum) |
| 106 | { |
| 107 | ci_t *ci; |
| 108 | mch_t *ch; |
| 109 | int portnum, gchan; |
| 110 | |
| 111 | for (ci = c4_list; ci; ci = ci->next) |
| 112 | for (portnum = 0; portnum < ci->max_port; portnum++) |
| 113 | for (gchan = 0; gchan < MUSYCC_NCHANS; gchan++) |
| 114 | { |
Chi Pham | 24e7d79 | 2014-03-12 16:36:19 +0100 | [diff] [blame] | 115 | ch = ci->port[portnum].chan[gchan]; |
| 116 | if (ch) { |
| 117 | if ((ch->state != UNASSIGNED) && |
| 118 | (ch->channum == channum)) |
| 119 | return ch; |
| 120 | } |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 121 | } |
Sachin Kamat | 360d26e | 2013-09-27 09:36:35 +0530 | [diff] [blame] | 122 | return NULL; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 123 | } |
| 124 | |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 125 | /*** |
| 126 | * Check port state and set LED states using watchdog or ioctl... |
| 127 | * also check for in-band SF loopback commands (& cause results if they are there) |
| 128 | * |
| 129 | * Alarm function depends on comet bits indicating change in |
| 130 | * link status (linkMask) to keep the link status indication straight. |
| 131 | * |
| 132 | * Indications are only LED and system log -- except when ioctl is invoked. |
| 133 | * |
| 134 | * "alarmed" record (a.k.a. copyVal, in some cases below) decodes as: |
| 135 | * |
| 136 | * RMAI (E1 only) 0x100 |
| 137 | * alarm LED on 0x80 |
| 138 | * link LED on 0x40 |
| 139 | * link returned 0x20 (link was down, now it's back and 'port get' hasn't run) |
| 140 | * change in LED 0x10 (update LED register because value has changed) |
| 141 | * link is down 0x08 |
| 142 | * YelAlm(RAI) 0x04 |
| 143 | * RedAlm 0x02 |
| 144 | * AIS(blue)Alm 0x01 |
| 145 | * |
| 146 | * note "link has returned" indication is reset on read |
| 147 | * (e.g. by use of the c4_control port get command) |
| 148 | */ |
| 149 | |
| 150 | #define sbeLinkMask 0x41 /* change in signal status (lost/recovered) + |
| 151 | * state */ |
| 152 | #define sbeLinkChange 0x40 |
| 153 | #define sbeLinkDown 0x01 |
| 154 | #define sbeAlarmsMask 0x07 /* red / yellow / blue alarm conditions */ |
| 155 | #define sbeE1AlarmsMask 0x107 /* alarm conditions */ |
| 156 | |
| 157 | #define COMET_LBCMD_READ 0x80 /* read only (do not set, return read value) */ |
| 158 | |
| 159 | void |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 160 | checkPorts (ci_t *ci) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 161 | { |
| 162 | #ifndef CONFIG_SBE_PMCC4_NCOMM |
| 163 | /* |
| 164 | * PORT POINT - NCOMM needs to avoid this code since the polling of |
| 165 | * alarms conflicts with NCOMM's interrupt servicing implementation. |
| 166 | */ |
| 167 | |
Sima Baymani | 987e8be | 2013-11-05 21:49:16 +0100 | [diff] [blame] | 168 | struct s_comet_reg *comet; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 169 | volatile u_int32_t value; |
| 170 | u_int32_t copyVal, LEDval; |
| 171 | |
| 172 | u_int8_t portnum; |
| 173 | |
| 174 | LEDval = 0; |
| 175 | for (portnum = 0; portnum < ci->max_port; portnum++) |
| 176 | { |
| 177 | copyVal = 0x12f & (ci->alarmed[portnum]); /* port's alarm record */ |
| 178 | comet = ci->port[portnum].cometbase; |
| 179 | value = pci_read_32 ((u_int32_t *) &comet->cdrc_ists) & sbeLinkMask; /* link loss reg */ |
| 180 | |
| 181 | if (value & sbeLinkChange) /* is there a change in the link stuff */ |
| 182 | { |
| 183 | /* if there's been a change (above) and yet it's the same (below) */ |
| 184 | if (!(((copyVal >> 3) & sbeLinkDown) ^ (value & sbeLinkDown))) |
| 185 | { |
| 186 | if (value & sbeLinkDown) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 187 | pr_warning("%s: Port %d momentarily recovered.\n", |
| 188 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 189 | else |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 190 | pr_warning("%s: Warning: Port %d link was briefly down.\n", |
| 191 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 192 | } else if (value & sbeLinkDown) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 193 | pr_warning("%s: Warning: Port %d link is down.\n", |
| 194 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 195 | else |
| 196 | { |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 197 | pr_warning("%s: Port %d link has recovered.\n", |
| 198 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 199 | copyVal |= 0x20; /* record link transition to up */ |
| 200 | } |
| 201 | copyVal |= 0x10; /* change (link) --> update LEDs */ |
| 202 | } |
| 203 | copyVal &= 0x137; /* clear LED & link old history bits & |
| 204 | * save others */ |
| 205 | if (value & sbeLinkDown) |
| 206 | copyVal |= 0x08; /* record link status (now) */ |
| 207 | else |
| 208 | { /* if link is up, do this */ |
| 209 | copyVal |= 0x40; /* LED indicate link is up */ |
| 210 | /* Alarm things & the like ... first if E1, then if T1 */ |
| 211 | if (IS_FRAME_ANY_E1 (ci->port[portnum].p.port_mode)) |
| 212 | { |
| 213 | /* |
| 214 | * first check Codeword (SaX) changes & CRC and |
| 215 | * sub-multi-frame errors |
| 216 | */ |
| 217 | /* |
| 218 | * note these errors are printed every time they are detected |
| 219 | * vs. alarms |
| 220 | */ |
| 221 | value = pci_read_32 ((u_int32_t *) &comet->e1_frmr_nat_ists); /* codeword */ |
| 222 | if (value & 0x1f) |
| 223 | { /* if errors (crc or smf only) */ |
| 224 | if (value & 0x10) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 225 | pr_warning("%s: E1 Port %d Codeword Sa4 change detected.\n", |
| 226 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 227 | if (value & 0x08) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 228 | pr_warning("%s: E1 Port %d Codeword Sa5 change detected.\n", |
| 229 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 230 | if (value & 0x04) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 231 | pr_warning("%s: E1 Port %d Codeword Sa6 change detected.\n", |
| 232 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 233 | if (value & 0x02) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 234 | pr_warning("%s: E1 Port %d Codeword Sa7 change detected.\n", |
| 235 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 236 | if (value & 0x01) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 237 | pr_warning("%s: E1 Port %d Codeword Sa8 change detected.\n", |
| 238 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 239 | } |
| 240 | value = pci_read_32 ((u_int32_t *) &comet->e1_frmr_mists); /* crc & smf */ |
| 241 | if (value & 0x3) |
| 242 | { /* if errors (crc or smf only) */ |
| 243 | if (value & sbeE1CRC) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 244 | pr_warning("%s: E1 Port %d CRC-4 error(s) detected.\n", |
| 245 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 246 | if (value & sbeE1errSMF) /* error in sub-multiframe */ |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 247 | pr_warning("%s: E1 Port %d received errored SMF.\n", |
| 248 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 249 | } |
| 250 | value = pci_read_32 ((u_int32_t *) &comet->e1_frmr_masts) & 0xcc; /* alarms */ |
| 251 | /* |
| 252 | * pack alarms together (bitmiser), and construct similar to |
| 253 | * T1 |
| 254 | */ |
| 255 | /* RAI,RMAI,.,.,LOF,AIS,.,. ==> RMAI,.,.,.,.,.,RAI,LOF,AIS */ |
| 256 | /* see 0x97 */ |
| 257 | value = (value >> 2); |
| 258 | if (value & 0x30) |
| 259 | { |
| 260 | if (value & 0x20) |
| 261 | value |= 0x40; /* RAI */ |
| 262 | if (value & 0x10) |
| 263 | value |= 0x100; /* RMAI */ |
| 264 | value &= ~0x30; |
| 265 | } /* finished packing alarm in handy order */ |
| 266 | if (value != (copyVal & sbeE1AlarmsMask)) |
| 267 | { /* if alarms changed */ |
| 268 | copyVal |= 0x10;/* change LED status */ |
| 269 | if ((copyVal & sbeRedAlm) && !(value & sbeRedAlm)) |
| 270 | { |
| 271 | copyVal &= ~sbeRedAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 272 | pr_warning("%s: E1 Port %d LOF alarm ended.\n", |
| 273 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 274 | } else if (!(copyVal & sbeRedAlm) && (value & sbeRedAlm)) |
| 275 | { |
| 276 | copyVal |= sbeRedAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 277 | pr_warning("%s: E1 Warning: Port %d LOF alarm.\n", |
| 278 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 279 | } else if ((copyVal & sbeYelAlm) && !(value & sbeYelAlm)) |
| 280 | { |
| 281 | copyVal &= ~sbeYelAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 282 | pr_warning("%s: E1 Port %d RAI alarm ended.\n", |
| 283 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 284 | } else if (!(copyVal & sbeYelAlm) && (value & sbeYelAlm)) |
| 285 | { |
| 286 | copyVal |= sbeYelAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 287 | pr_warning("%s: E1 Warning: Port %d RAI alarm.\n", |
| 288 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 289 | } else if ((copyVal & sbeE1RMAI) && !(value & sbeE1RMAI)) |
| 290 | { |
| 291 | copyVal &= ~sbeE1RMAI; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 292 | pr_warning("%s: E1 Port %d RMAI alarm ended.\n", |
| 293 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 294 | } else if (!(copyVal & sbeE1RMAI) && (value & sbeE1RMAI)) |
| 295 | { |
| 296 | copyVal |= sbeE1RMAI; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 297 | pr_warning("%s: E1 Warning: Port %d RMAI alarm.\n", |
| 298 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 299 | } else if ((copyVal & sbeAISAlm) && !(value & sbeAISAlm)) |
| 300 | { |
| 301 | copyVal &= ~sbeAISAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 302 | pr_warning("%s: E1 Port %d AIS alarm ended.\n", |
| 303 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 304 | } else if (!(copyVal & sbeAISAlm) && (value & sbeAISAlm)) |
| 305 | { |
| 306 | copyVal |= sbeAISAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 307 | pr_warning("%s: E1 Warning: Port %d AIS alarm.\n", |
| 308 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 309 | } |
| 310 | } |
| 311 | /* end of E1 alarm code */ |
| 312 | } else |
| 313 | { /* if a T1 mode */ |
| 314 | value = pci_read_32 ((u_int32_t *) &comet->t1_almi_ists); /* alarms */ |
| 315 | value &= sbeAlarmsMask; |
| 316 | if (value != (copyVal & sbeAlarmsMask)) |
| 317 | { /* if alarms changed */ |
| 318 | copyVal |= 0x10;/* change LED status */ |
| 319 | if ((copyVal & sbeRedAlm) && !(value & sbeRedAlm)) |
| 320 | { |
| 321 | copyVal &= ~sbeRedAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 322 | pr_warning("%s: Port %d red alarm ended.\n", |
| 323 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 324 | } else if (!(copyVal & sbeRedAlm) && (value & sbeRedAlm)) |
| 325 | { |
| 326 | copyVal |= sbeRedAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 327 | pr_warning("%s: Warning: Port %d red alarm.\n", |
| 328 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 329 | } else if ((copyVal & sbeYelAlm) && !(value & sbeYelAlm)) |
| 330 | { |
| 331 | copyVal &= ~sbeYelAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 332 | pr_warning("%s: Port %d yellow (RAI) alarm ended.\n", |
| 333 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 334 | } else if (!(copyVal & sbeYelAlm) && (value & sbeYelAlm)) |
| 335 | { |
| 336 | copyVal |= sbeYelAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 337 | pr_warning("%s: Warning: Port %d yellow (RAI) alarm.\n", |
| 338 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 339 | } else if ((copyVal & sbeAISAlm) && !(value & sbeAISAlm)) |
| 340 | { |
| 341 | copyVal &= ~sbeAISAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 342 | pr_warning("%s: Port %d blue (AIS) alarm ended.\n", |
| 343 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 344 | } else if (!(copyVal & sbeAISAlm) && (value & sbeAISAlm)) |
| 345 | { |
| 346 | copyVal |= sbeAISAlm; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 347 | pr_warning("%s: Warning: Port %d blue (AIS) alarm.\n", |
| 348 | ci->devname, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 349 | } |
| 350 | } |
| 351 | } /* end T1 mode alarm checks */ |
| 352 | } |
| 353 | if (copyVal & sbeAlarmsMask) |
| 354 | copyVal |= 0x80; /* if alarm turn yel LED on */ |
| 355 | if (copyVal & 0x10) |
| 356 | LEDval |= 0x100; /* tag if LED values have changed */ |
| 357 | LEDval |= ((copyVal & 0xc0) >> (6 - (portnum * 2))); |
| 358 | |
| 359 | ci->alarmed[portnum] &= 0xfffff000; /* out with the old (it's fff |
| 360 | * ... foo) */ |
| 361 | ci->alarmed[portnum] |= (copyVal); /* in with the new */ |
| 362 | |
| 363 | /* |
| 364 | * enough with the alarms and LED's, now let's check for loopback |
| 365 | * requests |
| 366 | */ |
| 367 | |
| 368 | if (IS_FRAME_ANY_T1 (ci->port[portnum].p.port_mode)) |
| 369 | { /* if a T1 mode */ |
| 370 | /* |
| 371 | * begin in-band (SF) loopback code detection -- start by reading |
| 372 | * command |
| 373 | */ |
| 374 | value = pci_read_32 ((u_int32_t *) &comet->ibcd_ies); /* detect reg. */ |
| 375 | value &= 0x3; /* trim to handy bits */ |
| 376 | if (value & 0x2) |
| 377 | { /* activate loopback (sets for deactivate |
| 378 | * code length) */ |
| 379 | copyVal = c4_loop_port (ci, portnum, COMET_LBCMD_READ); /* read line loopback |
| 380 | * mode */ |
| 381 | if (copyVal != COMET_MDIAG_LINELB) /* don't do it again if |
| 382 | * already in that mode */ |
| 383 | c4_loop_port (ci, portnum, COMET_MDIAG_LINELB); /* put port in line |
| 384 | * loopback mode */ |
| 385 | } |
| 386 | if (value & 0x1) |
| 387 | { /* deactivate loopback (sets for activate |
| 388 | * code length) */ |
| 389 | copyVal = c4_loop_port (ci, portnum, COMET_LBCMD_READ); /* read line loopback |
| 390 | * mode */ |
| 391 | if (copyVal != COMET_MDIAG_LBOFF) /* don't do it again if |
| 392 | * already in that mode */ |
| 393 | c4_loop_port (ci, portnum, COMET_MDIAG_LBOFF); /* take port out of any |
| 394 | * loopback mode */ |
| 395 | } |
| 396 | } |
| 397 | if (IS_FRAME_ANY_T1ESF (ci->port[portnum].p.port_mode)) |
| 398 | { /* if a T1 ESF mode */ |
| 399 | /* begin ESF loopback code */ |
| 400 | value = pci_read_32 ((u_int32_t *) &comet->t1_rboc_sts) & 0x3f; /* read command */ |
| 401 | if (value == 0x07) |
| 402 | c4_loop_port (ci, portnum, COMET_MDIAG_LINELB); /* put port in line |
| 403 | * loopback mode */ |
| 404 | if (value == 0x0a) |
| 405 | c4_loop_port (ci, portnum, COMET_MDIAG_PAYLB); /* put port in payload |
| 406 | * loopbk mode */ |
| 407 | if ((value == 0x1c) || (value == 0x19) || (value == 0x12)) |
| 408 | c4_loop_port (ci, portnum, COMET_MDIAG_LBOFF); /* take port out of any |
| 409 | * loopbk mode */ |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 410 | if (cxt1e1_log_level >= LOG_DEBUG) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 411 | if (value != 0x3f) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 412 | pr_warning("%s: BOC value = %x on Port %d\n", |
| 413 | ci->devname, value, portnum); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 414 | /* end ESF loopback code */ |
| 415 | } |
| 416 | } |
| 417 | |
| 418 | /* if something is new, update LED's */ |
| 419 | if (LEDval & 0x100) |
| 420 | pci_write_32 ((u_int32_t *) &ci->cpldbase->leds, LEDval & 0xff); |
| 421 | #endif /*** CONFIG_SBE_PMCC4_NCOMM ***/ |
| 422 | } |
| 423 | |
| 424 | |
Shaun Laing | 37ca35c | 2013-08-09 07:54:24 -0600 | [diff] [blame] | 425 | static void |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 426 | c4_watchdog (ci_t *ci) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 427 | { |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 428 | if (drvr_state != SBE_DRVR_AVAILABLE) |
| 429 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 430 | if (cxt1e1_log_level >= LOG_MONITOR) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 431 | pr_info("drvr not available (%x)\n", drvr_state); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 432 | return; |
| 433 | } |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 434 | ci->wdcount++; |
| 435 | checkPorts (ci); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 436 | ci->wd_notify = 0; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 437 | } |
| 438 | |
| 439 | |
| 440 | void |
| 441 | c4_cleanup (void) |
| 442 | { |
| 443 | ci_t *ci, *next; |
| 444 | mpi_t *pi; |
| 445 | int portnum, j; |
| 446 | |
| 447 | ci = c4_list; |
| 448 | while (ci) |
| 449 | { |
| 450 | next = ci->next; /* protect <next> from upcoming <free> */ |
| 451 | pci_write_32 ((u_int32_t *) &ci->cpldbase->leds, PMCC4_CPLD_LED_OFF); |
| 452 | for (portnum = 0; portnum < ci->max_port; portnum++) |
| 453 | { |
| 454 | pi = &ci->port[portnum]; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 455 | c4_wq_port_cleanup (pi); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 456 | for (j = 0; j < MUSYCC_NCHANS; j++) |
| 457 | { |
| 458 | if (pi->chan[j]) |
Daeseok Youn | 693d963 | 2014-04-18 09:31:35 +0900 | [diff] [blame] | 459 | kfree(pi->chan[j]); /* free mch_t struct */ |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 460 | } |
Daeseok Youn | 693d963 | 2014-04-18 09:31:35 +0900 | [diff] [blame] | 461 | kfree(pi->regram_saved); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 462 | } |
Daeseok Youn | 693d963 | 2014-04-18 09:31:35 +0900 | [diff] [blame] | 463 | kfree(ci->iqd_p_saved); |
| 464 | kfree(ci); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 465 | ci = next; /* cleanup next board, if any */ |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | |
| 470 | /* |
| 471 | * This function issues a write to all comet chips and expects the same data |
| 472 | * to be returned from the subsequent read. This determines the board build |
| 473 | * to be a 1-port, 2-port, or 4-port build. The value returned represents a |
| 474 | * bit-mask of the found ports. Only certain configurations are considered |
| 475 | * VALID or LEGAL builds. |
| 476 | */ |
| 477 | |
| 478 | int |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 479 | c4_get_portcfg (ci_t *ci) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 480 | { |
Sima Baymani | 987e8be | 2013-11-05 21:49:16 +0100 | [diff] [blame] | 481 | struct s_comet_reg *comet; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 482 | int portnum, mask; |
| 483 | u_int32_t wdata, rdata; |
| 484 | |
| 485 | wdata = COMET_MDIAG_LBOFF; /* take port out of any loopback mode */ |
| 486 | |
| 487 | mask = 0; |
| 488 | for (portnum = 0; portnum < MUSYCC_NPORTS; portnum++) |
| 489 | { |
| 490 | comet = ci->port[portnum].cometbase; |
| 491 | pci_write_32 ((u_int32_t *) &comet->mdiag, wdata); |
| 492 | rdata = pci_read_32 ((u_int32_t *) &comet->mdiag) & COMET_MDIAG_LBMASK; |
| 493 | if (wdata == rdata) |
| 494 | mask |= 1 << portnum; |
| 495 | } |
| 496 | return mask; |
| 497 | } |
| 498 | |
| 499 | |
| 500 | /* nothing herein should generate interrupts */ |
| 501 | |
| 502 | status_t __init |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 503 | c4_init (ci_t *ci, u_char *func0, u_char *func1) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 504 | { |
| 505 | mpi_t *pi; |
| 506 | mch_t *ch; |
| 507 | static u_int32_t count = 0; |
| 508 | int portnum, j; |
| 509 | |
| 510 | ci->state = C_INIT; |
| 511 | ci->brdno = count++; |
| 512 | ci->intlog.this_status_new = 0; |
| 513 | atomic_set (&ci->bh_pending, 0); |
| 514 | |
| 515 | ci->reg = (struct musycc_globalr *) func0; |
| 516 | ci->eeprombase = (u_int32_t *) (func1 + EEPROM_OFFSET); |
| 517 | ci->cpldbase = (c4cpld_t *) ((u_int32_t *) (func1 + ISPLD_OFFSET)); |
| 518 | |
| 519 | /*** PORT POINT - the following is the first access of any type to the hardware ***/ |
| 520 | #ifdef CONFIG_SBE_PMCC4_NCOMM |
| 521 | /* NCOMM driver uses INTB interrupt to monitor CPLD register */ |
| 522 | pci_write_32 ((u_int32_t *) &ci->reg->glcd, GCD_MAGIC); |
| 523 | #else |
| 524 | /* standard driver POLLS for INTB via CPLD register */ |
| 525 | pci_write_32 ((u_int32_t *) &ci->reg->glcd, GCD_MAGIC | MUSYCC_GCD_INTB_DISABLE); |
| 526 | #endif |
| 527 | |
| 528 | { |
| 529 | int pmsk; |
| 530 | |
| 531 | /* need comet addresses available for determination of hardware build */ |
| 532 | for (portnum = 0; portnum < MUSYCC_NPORTS; portnum++) |
| 533 | { |
| 534 | pi = &ci->port[portnum]; |
Sima Baymani | 987e8be | 2013-11-05 21:49:16 +0100 | [diff] [blame] | 535 | pi->cometbase = (struct s_comet_reg *) ((u_int32_t *) (func1 + COMET_OFFSET (portnum))); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 536 | pi->reg = (struct musycc_globalr *) ((u_char *) ci->reg + (portnum * 0x800)); |
| 537 | pi->portnum = portnum; |
| 538 | pi->p.portnum = portnum; |
| 539 | pi->openchans = 0; |
| 540 | #ifdef SBE_MAP_DEBUG |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 541 | pr_info("Comet-%d: addr = %p\n", portnum, pi->cometbase); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 542 | #endif |
| 543 | } |
| 544 | pmsk = c4_get_portcfg (ci); |
| 545 | switch (pmsk) |
| 546 | { |
| 547 | case 0x1: |
| 548 | ci->max_port = 1; |
| 549 | break; |
| 550 | case 0x3: |
| 551 | ci->max_port = 2; |
| 552 | break; |
| 553 | #if 0 |
| 554 | case 0x7: /* not built, but could be... */ |
| 555 | ci->max_port = 3; |
| 556 | break; |
| 557 | #endif |
| 558 | case 0xf: |
| 559 | ci->max_port = 4; |
| 560 | break; |
| 561 | default: |
| 562 | ci->max_port = 0; |
Joe Perches | e6e4d05 | 2010-05-03 11:02:44 -0700 | [diff] [blame] | 563 | pr_warning("%s: illegal port configuration (%x)\n", |
| 564 | ci->devname, pmsk); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 565 | return SBE_DRVR_FAIL; |
| 566 | } |
| 567 | #ifdef SBE_MAP_DEBUG |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 568 | pr_info(">> %s: c4_get_build - pmsk %x max_port %x\n", |
| 569 | ci->devname, pmsk, ci->max_port); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 570 | #endif |
| 571 | } |
| 572 | |
| 573 | for (portnum = 0; portnum < ci->max_port; portnum++) |
| 574 | { |
| 575 | pi = &ci->port[portnum]; |
| 576 | pi->up = ci; |
| 577 | pi->sr_last = 0xffffffff; |
| 578 | pi->p.port_mode = CFG_FRAME_SF; /* T1 B8ZS, the default */ |
| 579 | pi->p.portP = (CFG_CLK_PORT_EXTERNAL | CFG_LBO_LH0); /* T1 defaults */ |
| 580 | |
| 581 | OS_sem_init (&pi->sr_sem_busy, SEM_AVAILABLE); |
| 582 | OS_sem_init (&pi->sr_sem_wait, SEM_TAKEN); |
| 583 | |
| 584 | for (j = 0; j < 32; j++) |
| 585 | { |
| 586 | pi->fifomap[j] = -1; |
| 587 | pi->tsm[j] = 0; /* no assignments, all available */ |
| 588 | } |
| 589 | |
| 590 | /* allocate channel structures for this port */ |
| 591 | for (j = 0; j < MUSYCC_NCHANS; j++) |
| 592 | { |
Daeseok Youn | 693d963 | 2014-04-18 09:31:35 +0900 | [diff] [blame] | 593 | ch = kzalloc(sizeof(mch_t), GFP_KERNEL | GFP_DMA); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 594 | if (ch) |
| 595 | { |
| 596 | pi->chan[j] = ch; |
| 597 | ch->state = UNASSIGNED; |
| 598 | ch->up = pi; |
| 599 | ch->gchan = (-1); /* channel assignment not yet known */ |
| 600 | ch->channum = (-1); /* channel assignment not yet known */ |
| 601 | ch->p.card = ci->brdno; |
| 602 | ch->p.port = portnum; |
| 603 | ch->p.channum = (-1); /* channel assignment not yet known */ |
| 604 | ch->p.mode_56k = 0; /* default is 64kbps mode */ |
| 605 | } else |
| 606 | { |
Joe Perches | e6e4d05 | 2010-05-03 11:02:44 -0700 | [diff] [blame] | 607 | pr_warning("failed mch_t malloc, port %d channel %d size %u.\n", |
| 608 | portnum, j, (unsigned int) sizeof (mch_t)); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 609 | break; |
| 610 | } |
| 611 | } |
| 612 | } |
| 613 | |
| 614 | |
| 615 | { |
| 616 | /* |
| 617 | * Set LEDs through their paces to supply visual proof that LEDs are |
| 618 | * functional and not burnt out nor broken. |
| 619 | * |
| 620 | * YELLOW + GREEN -> OFF. |
| 621 | */ |
| 622 | |
| 623 | pci_write_32 ((u_int32_t *) &ci->cpldbase->leds, |
| 624 | PMCC4_CPLD_LED_GREEN | PMCC4_CPLD_LED_YELLOW); |
| 625 | OS_uwait (750000, "leds"); |
| 626 | pci_write_32 ((u_int32_t *) &ci->cpldbase->leds, PMCC4_CPLD_LED_OFF); |
| 627 | } |
| 628 | |
| 629 | OS_init_watchdog (&ci->wd, (void (*) (void *)) c4_watchdog, ci, WATCHDOG_TIMEOUT); |
| 630 | return SBE_DRVR_SUCCESS; |
| 631 | } |
| 632 | |
| 633 | |
| 634 | /* better be fully setup to handle interrupts when you call this */ |
| 635 | |
| 636 | status_t __init |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 637 | c4_init2 (ci_t *ci) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 638 | { |
| 639 | status_t ret; |
| 640 | |
| 641 | /* PORT POINT: this routine generates first interrupt */ |
Chi Pham | 24e7d79 | 2014-03-12 16:36:19 +0100 | [diff] [blame] | 642 | ret = musycc_init(ci); |
| 643 | if (ret != SBE_DRVR_SUCCESS) |
| 644 | return ret; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 645 | |
| 646 | #if 0 |
| 647 | ci->p.framing_type = FRAMING_CBP; |
| 648 | ci->p.h110enable = 1; |
| 649 | #if 0 |
| 650 | ci->p.hypersize = 0; |
| 651 | #else |
| 652 | hyperdummy = 0; |
| 653 | #endif |
| 654 | ci->p.clock = 0; /* Use internal clocking until set to |
| 655 | * external */ |
| 656 | c4_card_set_params (ci, &ci->p); |
| 657 | #endif |
| 658 | OS_start_watchdog (&ci->wd); |
| 659 | return SBE_DRVR_SUCCESS; |
| 660 | } |
| 661 | |
| 662 | |
| 663 | /* This function sets the loopback mode (or clears it, as the case may be). */ |
| 664 | |
| 665 | int |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 666 | c4_loop_port (ci_t *ci, int portnum, u_int8_t cmd) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 667 | { |
Sima Baymani | 987e8be | 2013-11-05 21:49:16 +0100 | [diff] [blame] | 668 | struct s_comet_reg *comet; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 669 | volatile u_int32_t loopValue; |
| 670 | |
| 671 | comet = ci->port[portnum].cometbase; |
| 672 | loopValue = pci_read_32 ((u_int32_t *) &comet->mdiag) & COMET_MDIAG_LBMASK; |
| 673 | |
| 674 | if (cmd & COMET_LBCMD_READ) |
| 675 | return loopValue; /* return the read value */ |
| 676 | |
| 677 | if (loopValue != cmd) |
| 678 | { |
| 679 | switch (cmd) |
| 680 | { |
| 681 | case COMET_MDIAG_LINELB: |
| 682 | /* set(SF)loopback down (turn off) code length to 6 bits */ |
| 683 | pci_write_32 ((u_int32_t *) &comet->ibcd_cfg, 0x05); |
| 684 | break; |
| 685 | case COMET_MDIAG_LBOFF: |
| 686 | /* set (SF) loopback up (turn on) code length to 5 bits */ |
| 687 | pci_write_32 ((u_int32_t *) &comet->ibcd_cfg, 0x00); |
| 688 | break; |
| 689 | } |
| 690 | |
| 691 | pci_write_32 ((u_int32_t *) &comet->mdiag, cmd); |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 692 | if (cxt1e1_log_level >= LOG_WARN) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 693 | 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] | 694 | ci->devname, cmd, loopValue, portnum); |
| 695 | loopValue = pci_read_32 ((u_int32_t *) &comet->mdiag) & COMET_MDIAG_LBMASK; |
| 696 | if (loopValue != cmd) |
| 697 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 698 | if (cxt1e1_log_level >= LOG_ERROR) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 699 | 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] | 700 | ci->devname, portnum); |
| 701 | } |
| 702 | } else |
| 703 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 704 | if (cxt1e1_log_level >= LOG_WARN) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 705 | pr_info("%s: loopback already in that mode (%2x)\n", |
| 706 | ci->devname, loopValue); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 707 | } |
| 708 | return 0; |
| 709 | } |
| 710 | |
| 711 | |
| 712 | /* c4_frame_rw: read or write the comet register specified |
| 713 | * (modifies use of port_param to non-standard use of struct) |
| 714 | * Specifically: |
| 715 | * pp.portnum (one guess) |
| 716 | * pp.port_mode offset of register |
| 717 | * pp.portP write (or not, i.e. read) |
| 718 | * pp.portStatus write value |
| 719 | * BTW: |
| 720 | * pp.portStatus also used to return read value |
| 721 | * pp.portP also used during write, to return old reg value |
| 722 | */ |
| 723 | |
| 724 | status_t |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 725 | c4_frame_rw (ci_t *ci, struct sbecom_port_param *pp) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 726 | { |
Sima Baymani | 987e8be | 2013-11-05 21:49:16 +0100 | [diff] [blame] | 727 | struct s_comet_reg *comet; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 728 | volatile u_int32_t data; |
| 729 | |
| 730 | if (pp->portnum >= ci->max_port)/* sanity check */ |
Daeseok Youn | 2ebd09ac | 2014-03-18 09:45:40 +0900 | [diff] [blame] | 731 | return -ENXIO; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 732 | |
| 733 | comet = ci->port[pp->portnum].cometbase; |
| 734 | data = pci_read_32 ((u_int32_t *) comet + pp->port_mode) & 0xff; |
| 735 | |
| 736 | if (pp->portP) |
| 737 | { /* control says this is a register |
| 738 | * _write_ */ |
| 739 | if (pp->portStatus == data) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 740 | pr_info("%s: Port %d already that value! Writing again anyhow.\n", |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 741 | ci->devname, pp->portnum); |
| 742 | pp->portP = (u_int8_t) data; |
| 743 | pci_write_32 ((u_int32_t *) comet + pp->port_mode, |
| 744 | pp->portStatus); |
| 745 | data = pci_read_32 ((u_int32_t *) comet + pp->port_mode) & 0xff; |
| 746 | } |
| 747 | pp->portStatus = (u_int8_t) data; |
| 748 | return 0; |
| 749 | } |
| 750 | |
| 751 | |
| 752 | /* c4_pld_rw: read or write the pld register specified |
| 753 | * (modifies use of port_param to non-standard use of struct) |
| 754 | * Specifically: |
| 755 | * pp.port_mode offset of register |
| 756 | * pp.portP write (or not, i.e. read) |
| 757 | * pp.portStatus write value |
| 758 | * BTW: |
| 759 | * pp.portStatus also used to return read value |
| 760 | * pp.portP also used during write, to return old reg value |
| 761 | */ |
| 762 | |
| 763 | status_t |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 764 | c4_pld_rw (ci_t *ci, struct sbecom_port_param *pp) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 765 | { |
| 766 | volatile u_int32_t *regaddr; |
| 767 | volatile u_int32_t data; |
| 768 | int regnum = pp->port_mode; |
| 769 | |
| 770 | regaddr = (u_int32_t *) ci->cpldbase + regnum; |
| 771 | data = pci_read_32 ((u_int32_t *) regaddr) & 0xff; |
| 772 | |
| 773 | if (pp->portP) |
| 774 | { /* control says this is a register |
| 775 | * _write_ */ |
| 776 | pp->portP = (u_int8_t) data; |
| 777 | pci_write_32 ((u_int32_t *) regaddr, pp->portStatus); |
| 778 | data = pci_read_32 ((u_int32_t *) regaddr) & 0xff; |
| 779 | } |
| 780 | pp->portStatus = (u_int8_t) data; |
| 781 | return 0; |
| 782 | } |
| 783 | |
| 784 | /* c4_musycc_rw: read or write the musycc register specified |
| 785 | * (modifies use of port_param to non-standard use of struct) |
| 786 | * Specifically: |
| 787 | * mcp.RWportnum port number and write indication bit (0x80) |
| 788 | * mcp.offset offset of register |
| 789 | * mcp.value write value going in and read value returning |
| 790 | */ |
| 791 | |
| 792 | /* PORT POINT: TX Subchannel Map registers are write-only |
| 793 | * areas within the MUSYCC and always return FF */ |
| 794 | /* PORT POINT: regram and reg structures are minorly different and <offset> ioctl |
| 795 | * settings are aligned with the <reg> struct musycc_globalr{} usage. |
| 796 | * Also, regram is separately allocated shared memory, allocated for each port. |
| 797 | * PORT POINT: access offsets of 0x6000 for Msg Cfg Desc Tbl are for 4-port MUSYCC |
| 798 | * only. (An 8-port MUSYCC has 0x16000 offsets for accessing its upper 4 tables.) |
| 799 | */ |
| 800 | |
| 801 | status_t |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 802 | c4_musycc_rw (ci_t *ci, struct c4_musycc_param *mcp) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 803 | { |
| 804 | mpi_t *pi; |
| 805 | volatile u_int32_t *dph; /* hardware implemented register */ |
Sachin Kamat | 360d26e | 2013-09-27 09:36:35 +0530 | [diff] [blame] | 806 | u_int32_t *dpr = NULL; /* RAM image of registers for group command |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 807 | * usage */ |
| 808 | int offset = mcp->offset % 0x800; /* group relative address |
| 809 | * offset, mcp->portnum is |
| 810 | * not used */ |
| 811 | int portnum, ramread = 0; |
| 812 | volatile u_int32_t data; |
| 813 | |
| 814 | /* |
| 815 | * Sanity check hardware accessibility. The 0x6000 portion handles port |
| 816 | * numbers associated with Msg Descr Tbl decoding. |
| 817 | */ |
| 818 | portnum = (mcp->offset % 0x6000) / 0x800; |
| 819 | if (portnum >= ci->max_port) |
Daeseok Youn | 2ebd09ac | 2014-03-18 09:45:40 +0900 | [diff] [blame] | 820 | return -ENXIO; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 821 | pi = &ci->port[portnum]; |
| 822 | if (mcp->offset >= 0x6000) |
| 823 | offset += 0x6000; /* put back in MsgCfgDesc address offset */ |
| 824 | dph = (u_int32_t *) ((u_long) pi->reg + offset); |
| 825 | |
| 826 | /* read of TX are from RAM image, since hardware returns FF */ |
| 827 | dpr = (u_int32_t *) ((u_long) pi->regram + offset); |
| 828 | if (mcp->offset < 0x6000) /* non MsgDesc Tbl accesses might require |
| 829 | * RAM access */ |
| 830 | { |
| 831 | if (offset >= 0x200 && offset < 0x380) |
| 832 | ramread = 1; |
| 833 | if (offset >= 0x10 && offset < 0x200) |
| 834 | ramread = 1; |
| 835 | } |
| 836 | /* read register from RAM or hardware, depending... */ |
| 837 | if (ramread) |
| 838 | { |
| 839 | data = *dpr; |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 840 | //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] | 841 | } else |
| 842 | { |
| 843 | data = pci_read_32 ((u_int32_t *) dph); |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 844 | //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] | 845 | } |
| 846 | |
| 847 | |
| 848 | if (mcp->RWportnum & 0x80) |
| 849 | { /* control says this is a register |
| 850 | * _write_ */ |
| 851 | if (mcp->value == data) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 852 | 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] | 853 | ci->devname, (mcp->RWportnum & 0x7)); |
| 854 | /* write register RAM */ |
| 855 | if (ramread) |
| 856 | *dpr = mcp->value; |
| 857 | /* write hardware register */ |
| 858 | pci_write_32 ((u_int32_t *) dph, mcp->value); |
| 859 | } |
| 860 | mcp->value = data; /* return the read value (or the 'old |
| 861 | * value', if is write) */ |
| 862 | return 0; |
| 863 | } |
| 864 | |
| 865 | status_t |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 866 | c4_get_port (ci_t *ci, int portnum) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 867 | { |
| 868 | if (portnum >= ci->max_port) /* sanity check */ |
Daeseok Youn | 2ebd09ac | 2014-03-18 09:45:40 +0900 | [diff] [blame] | 869 | return -ENXIO; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 870 | |
| 871 | SD_SEM_TAKE (&ci->sem_wdbusy, "_wd_"); /* only 1 thru here, per |
| 872 | * board */ |
| 873 | checkPorts (ci); |
| 874 | ci->port[portnum].p.portStatus = (u_int8_t) ci->alarmed[portnum]; |
| 875 | ci->alarmed[portnum] &= 0xdf; |
| 876 | SD_SEM_GIVE (&ci->sem_wdbusy); /* release per-board hold */ |
| 877 | return 0; |
| 878 | } |
| 879 | |
| 880 | status_t |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 881 | c4_set_port (ci_t *ci, int portnum) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 882 | { |
| 883 | mpi_t *pi; |
| 884 | struct sbecom_port_param *pp; |
| 885 | int e1mode; |
| 886 | u_int8_t clck; |
| 887 | int i; |
| 888 | |
| 889 | if (portnum >= ci->max_port) /* sanity check */ |
Daeseok Youn | 2ebd09ac | 2014-03-18 09:45:40 +0900 | [diff] [blame] | 890 | return -ENXIO; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 891 | |
| 892 | pi = &ci->port[portnum]; |
| 893 | pp = &ci->port[portnum].p; |
| 894 | e1mode = IS_FRAME_ANY_E1 (pp->port_mode); |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 895 | if (cxt1e1_log_level >= LOG_MONITOR2) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 896 | { |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 897 | 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] | 898 | ci->devname, |
| 899 | portnum, e1mode, pi->openchans); |
| 900 | } |
| 901 | if (pi->openchans) |
Daeseok Youn | 2ebd09ac | 2014-03-18 09:45:40 +0900 | [diff] [blame] | 902 | return -EBUSY; /* group needs initialization only for |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 903 | * first channel of a group */ |
| 904 | |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 905 | { |
| 906 | status_t ret; |
| 907 | |
Chi Pham | 24e7d79 | 2014-03-12 16:36:19 +0100 | [diff] [blame] | 908 | ret = c4_wq_port_init(pi); |
| 909 | if (ret) /* create/init workqueue_struct */ |
| 910 | return ret; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 911 | } |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 912 | |
| 913 | init_comet (ci, pi->cometbase, pp->port_mode, 1 /* clockmaster == true */ , pp->portP); |
| 914 | clck = pci_read_32 ((u_int32_t *) &ci->cpldbase->mclk) & PMCC4_CPLD_MCLK_MASK; |
| 915 | if (e1mode) |
| 916 | clck |= 1 << portnum; |
| 917 | else |
| 918 | clck &= 0xf ^ (1 << portnum); |
| 919 | |
| 920 | pci_write_32 ((u_int32_t *) &ci->cpldbase->mclk, clck); |
| 921 | pci_write_32 ((u_int32_t *) &ci->cpldbase->mcsr, PMCC4_CPLD_MCSR_IND); |
| 922 | pci_write_32 ((u_int32_t *) &pi->reg->gbp, OS_vtophys (pi->regram)); |
| 923 | |
| 924 | /*********************************************************************/ |
| 925 | /* ERRATA: If transparent mode is used, do not set OOFMP_DISABLE bit */ |
| 926 | /*********************************************************************/ |
| 927 | |
| 928 | pi->regram->grcd = |
| 929 | __constant_cpu_to_le32 (MUSYCC_GRCD_RX_ENABLE | |
| 930 | MUSYCC_GRCD_TX_ENABLE | |
| 931 | MUSYCC_GRCD_OOFMP_DISABLE | |
| 932 | MUSYCC_GRCD_SF_ALIGN | /* per MUSYCC ERRATA, |
| 933 | * for T1 * fix */ |
| 934 | MUSYCC_GRCD_COFAIRQ_DISABLE | |
| 935 | MUSYCC_GRCD_MC_ENABLE | |
| 936 | (MUSYCC_GRCD_POLLTH_32 << MUSYCC_GRCD_POLLTH_SHIFT)); |
| 937 | |
| 938 | pi->regram->pcd = |
| 939 | __constant_cpu_to_le32 ((e1mode ? 1 : 0) | |
| 940 | MUSYCC_PCD_TXSYNC_RISING | |
| 941 | MUSYCC_PCD_RXSYNC_RISING | |
| 942 | MUSYCC_PCD_RXDATA_RISING); |
| 943 | |
| 944 | /* Message length descriptor */ |
Bob Beers | c694ed8 | 2010-10-16 18:06:36 -0400 | [diff] [blame] | 945 | 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] | 946 | |
| 947 | /* tsm algorithm */ |
| 948 | for (i = 0; i < 32; i++) |
| 949 | { |
| 950 | |
| 951 | /*** ASSIGNMENT NOTES: ***/ |
| 952 | /*** Group's channel ZERO unavailable if E1. ***/ |
| 953 | /*** Group's channel 16 unavailable if E1 CAS. ***/ |
| 954 | /*** Group's channels 24-31 unavailable if T1. ***/ |
| 955 | |
| 956 | if (((i == 0) && e1mode) || |
| 957 | ((i == 16) && ((pp->port_mode == CFG_FRAME_E1CRC_CAS) || (pp->port_mode == CFG_FRAME_E1CRC_CAS_AMI))) |
| 958 | || ((i > 23) && (!e1mode))) |
| 959 | { |
| 960 | pi->tsm[i] = 0xff; /* make tslot unavailable for this mode */ |
| 961 | } else |
| 962 | { |
| 963 | pi->tsm[i] = 0x00; /* make tslot available for assignment */ |
| 964 | } |
| 965 | } |
| 966 | for (i = 0; i < MUSYCC_NCHANS; i++) |
| 967 | { |
| 968 | pi->regram->ttsm[i] = 0; |
| 969 | pi->regram->rtsm[i] = 0; |
| 970 | } |
| 971 | FLUSH_MEM_WRITE (); |
| 972 | musycc_serv_req (pi, SR_GROUP_INIT | SR_RX_DIRECTION); |
| 973 | musycc_serv_req (pi, SR_GROUP_INIT | SR_TX_DIRECTION); |
| 974 | |
| 975 | musycc_init_mdt (pi); |
| 976 | |
| 977 | pi->group_is_set = 1; |
| 978 | pi->p = *pp; |
| 979 | return 0; |
| 980 | } |
| 981 | |
| 982 | |
| 983 | unsigned int max_int = 0; |
| 984 | |
| 985 | status_t |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 986 | c4_new_chan (ci_t *ci, int portnum, int channum, void *user) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 987 | { |
| 988 | mpi_t *pi; |
| 989 | mch_t *ch; |
| 990 | int gchan; |
| 991 | |
| 992 | if (c4_find_chan (channum)) /* a new channel shouldn't already exist */ |
Daeseok Youn | 2ebd09ac | 2014-03-18 09:45:40 +0900 | [diff] [blame] | 993 | return -EEXIST; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 994 | |
| 995 | if (portnum >= ci->max_port) /* sanity check */ |
Daeseok Youn | 2ebd09ac | 2014-03-18 09:45:40 +0900 | [diff] [blame] | 996 | return -ENXIO; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 997 | |
| 998 | pi = &(ci->port[portnum]); |
| 999 | /* find any available channel within this port */ |
| 1000 | for (gchan = 0; gchan < MUSYCC_NCHANS; gchan++) |
| 1001 | { |
| 1002 | ch = pi->chan[gchan]; |
| 1003 | if (ch && ch->state == UNASSIGNED) /* no assignment is good! */ |
| 1004 | break; |
| 1005 | } |
| 1006 | if (gchan == MUSYCC_NCHANS) /* exhausted table, all were assigned */ |
Daeseok Youn | 2ebd09ac | 2014-03-18 09:45:40 +0900 | [diff] [blame] | 1007 | return -ENFILE; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1008 | |
| 1009 | ch->up = pi; |
| 1010 | |
| 1011 | /* NOTE: mch_t already cleared during OS_kmalloc() */ |
| 1012 | ch->state = DOWN; |
| 1013 | ch->user = user; |
| 1014 | ch->gchan = gchan; |
| 1015 | ch->channum = channum; /* mark our channel assignment */ |
| 1016 | ch->p.channum = channum; |
| 1017 | #if 1 |
| 1018 | ch->p.card = ci->brdno; |
| 1019 | ch->p.port = portnum; |
| 1020 | #endif |
| 1021 | ch->p.chan_mode = CFG_CH_PROTO_HDLC_FCS16; |
| 1022 | ch->p.idlecode = CFG_CH_FLAG_7E; |
| 1023 | ch->p.pad_fill_count = 2; |
| 1024 | spin_lock_init (&ch->ch_rxlock); |
| 1025 | spin_lock_init (&ch->ch_txlock); |
| 1026 | |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1027 | { |
| 1028 | status_t ret; |
| 1029 | |
Chi Pham | 24e7d79 | 2014-03-12 16:36:19 +0100 | [diff] [blame] | 1030 | ret = c4_wk_chan_init(pi, ch); |
| 1031 | if (ret) |
| 1032 | return ret; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1033 | } |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1034 | |
| 1035 | /* save off interface assignments which bound a board */ |
Sachin Kamat | 360d26e | 2013-09-27 09:36:35 +0530 | [diff] [blame] | 1036 | if (!ci->first_if) /* first channel registered is assumed to |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1037 | * be the lowest channel */ |
| 1038 | { |
| 1039 | ci->first_if = ci->last_if = user; |
| 1040 | ci->first_channum = ci->last_channum = channum; |
| 1041 | } else |
| 1042 | { |
| 1043 | ci->last_if = user; |
| 1044 | if (ci->last_channum < channum) /* higher number channel found */ |
| 1045 | ci->last_channum = channum; |
| 1046 | } |
| 1047 | return 0; |
| 1048 | } |
| 1049 | |
| 1050 | status_t |
| 1051 | c4_del_chan (int channum) |
| 1052 | { |
| 1053 | mch_t *ch; |
| 1054 | |
Chi Pham | 24e7d79 | 2014-03-12 16:36:19 +0100 | [diff] [blame] | 1055 | ch = c4_find_chan(channum); |
| 1056 | if (!ch) |
| 1057 | return -ENOENT; |
Daeseok Youn | 2ebd09ac | 2014-03-18 09:45:40 +0900 | [diff] [blame] | 1058 | |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1059 | if (ch->state == UP) |
| 1060 | musycc_chan_down ((ci_t *) 0, channum); |
| 1061 | ch->state = UNASSIGNED; |
| 1062 | ch->gchan = (-1); |
| 1063 | ch->channum = (-1); |
| 1064 | ch->p.channum = (-1); |
| 1065 | return 0; |
| 1066 | } |
| 1067 | |
| 1068 | status_t |
| 1069 | c4_del_chan_stats (int channum) |
| 1070 | { |
| 1071 | mch_t *ch; |
| 1072 | |
Chi Pham | 24e7d79 | 2014-03-12 16:36:19 +0100 | [diff] [blame] | 1073 | ch = c4_find_chan(channum); |
| 1074 | if (!ch) |
| 1075 | return -ENOENT; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1076 | |
| 1077 | memset (&ch->s, 0, sizeof (struct sbecom_chan_stats)); |
| 1078 | return 0; |
| 1079 | } |
| 1080 | |
| 1081 | |
| 1082 | status_t |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 1083 | c4_set_chan (int channum, struct sbecom_chan_param *p) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1084 | { |
| 1085 | mch_t *ch; |
| 1086 | int i, x = 0; |
| 1087 | |
Chi Pham | 24e7d79 | 2014-03-12 16:36:19 +0100 | [diff] [blame] | 1088 | ch = c4_find_chan(channum); |
| 1089 | if (!ch) |
| 1090 | return -ENOENT; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1091 | |
| 1092 | #if 1 |
| 1093 | if (ch->p.card != p->card || |
| 1094 | ch->p.port != p->port || |
| 1095 | ch->p.channum != p->channum) |
Daeseok Youn | 2ebd09ac | 2014-03-18 09:45:40 +0900 | [diff] [blame] | 1096 | return -EINVAL; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1097 | #endif |
| 1098 | |
| 1099 | if (!(ch->up->group_is_set)) |
| 1100 | { |
Daeseok Youn | 2ebd09ac | 2014-03-18 09:45:40 +0900 | [diff] [blame] | 1101 | return -EIO; /* out of order, SET_PORT command |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1102 | * required prior to first group's |
| 1103 | * SET_CHAN command */ |
| 1104 | } |
| 1105 | /* |
| 1106 | * Check for change of parameter settings in order to invoke closing of |
| 1107 | * channel prior to hardware poking. |
| 1108 | */ |
| 1109 | |
| 1110 | if (ch->p.status != p->status || ch->p.chan_mode != p->chan_mode || |
| 1111 | ch->p.data_inv != p->data_inv || ch->p.intr_mask != p->intr_mask || |
| 1112 | ch->txd_free < ch->txd_num) /* to clear out queued messages */ |
| 1113 | x = 1; /* we have a change requested */ |
| 1114 | for (i = 0; i < 32; i++) /* check for timeslot mapping changes */ |
| 1115 | if (ch->p.bitmask[i] != p->bitmask[i]) |
| 1116 | x = 1; /* we have a change requested */ |
| 1117 | ch->p = *p; |
| 1118 | if (x && (ch->state == UP)) /* if change request and channel is |
| 1119 | * open... */ |
| 1120 | { |
| 1121 | status_t ret; |
| 1122 | |
Chi Pham | 24e7d79 | 2014-03-12 16:36:19 +0100 | [diff] [blame] | 1123 | ret = musycc_chan_down((ci_t *)0, channum); |
| 1124 | if (ret) |
| 1125 | return ret; |
| 1126 | ret = c4_chan_up(ch->up->up, channum); |
| 1127 | if (ret) |
| 1128 | return ret; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1129 | sd_enable_xmit (ch->user); /* re-enable to catch flow controlled |
| 1130 | * channel */ |
| 1131 | } |
| 1132 | return 0; |
| 1133 | } |
| 1134 | |
| 1135 | |
| 1136 | status_t |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 1137 | c4_get_chan (int channum, struct sbecom_chan_param *p) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1138 | { |
| 1139 | mch_t *ch; |
| 1140 | |
Chi Pham | 24e7d79 | 2014-03-12 16:36:19 +0100 | [diff] [blame] | 1141 | ch = c4_find_chan(channum); |
| 1142 | if (!ch) |
| 1143 | return -ENOENT; |
Daeseok Youn | 2ebd09ac | 2014-03-18 09:45:40 +0900 | [diff] [blame] | 1144 | |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1145 | *p = ch->p; |
| 1146 | return 0; |
| 1147 | } |
| 1148 | |
| 1149 | status_t |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 1150 | c4_get_chan_stats (int channum, struct sbecom_chan_stats *p) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1151 | { |
| 1152 | mch_t *ch; |
| 1153 | |
Chi Pham | 24e7d79 | 2014-03-12 16:36:19 +0100 | [diff] [blame] | 1154 | ch = c4_find_chan(channum); |
| 1155 | if (!ch) |
| 1156 | return -ENOENT; |
Daeseok Youn | 2ebd09ac | 2014-03-18 09:45:40 +0900 | [diff] [blame] | 1157 | |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1158 | *p = ch->s; |
| 1159 | p->tx_pending = atomic_read (&ch->tx_pending); |
| 1160 | return 0; |
| 1161 | } |
| 1162 | |
Shaun Laing | 37ca35c | 2013-08-09 07:54:24 -0600 | [diff] [blame] | 1163 | static int |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 1164 | c4_fifo_alloc (mpi_t *pi, int chan, int *len) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1165 | { |
| 1166 | int i, l = 0, start = 0, max = 0, maxstart = 0; |
| 1167 | |
| 1168 | for (i = 0; i < 32; i++) |
| 1169 | { |
| 1170 | if (pi->fifomap[i] != -1) |
| 1171 | { |
| 1172 | l = 0; |
| 1173 | start = i + 1; |
| 1174 | continue; |
| 1175 | } |
| 1176 | ++l; |
| 1177 | if (l > max) |
| 1178 | { |
| 1179 | max = l; |
| 1180 | maxstart = start; |
| 1181 | } |
| 1182 | if (max == *len) |
| 1183 | break; |
| 1184 | } |
| 1185 | if (max != *len) |
| 1186 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 1187 | if (cxt1e1_log_level >= LOG_WARN) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1188 | 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] | 1189 | pi->up->devname, *len, max); |
| 1190 | *len = max; |
| 1191 | } |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 1192 | if (cxt1e1_log_level >= LOG_DEBUG) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1193 | 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] | 1194 | pi->up->devname, max, start, chan, pi->p.portnum); |
| 1195 | for (i = maxstart; i < (maxstart + max); i++) |
| 1196 | pi->fifomap[i] = chan; |
| 1197 | return start; |
| 1198 | } |
| 1199 | |
| 1200 | void |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 1201 | c4_fifo_free (mpi_t *pi, int chan) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1202 | { |
| 1203 | int i; |
| 1204 | |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 1205 | if (cxt1e1_log_level >= LOG_DEBUG) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1206 | pr_info("%s: deallocated fifo for channel %d/%d\n", |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1207 | pi->up->devname, chan, pi->p.portnum); |
| 1208 | for (i = 0; i < 32; i++) |
| 1209 | if (pi->fifomap[i] == chan) |
| 1210 | pi->fifomap[i] = -1; |
| 1211 | } |
| 1212 | |
| 1213 | |
| 1214 | status_t |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 1215 | c4_chan_up (ci_t *ci, int channum) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1216 | { |
| 1217 | mpi_t *pi; |
| 1218 | mch_t *ch; |
| 1219 | struct mbuf *m; |
| 1220 | struct mdesc *md; |
| 1221 | int nts, nbuf, txnum, rxnum; |
| 1222 | int addr, i, j, gchan; |
| 1223 | u_int32_t tmp; /* for optimizing conversion across BE |
| 1224 | * platform */ |
| 1225 | |
Chi Pham | 24e7d79 | 2014-03-12 16:36:19 +0100 | [diff] [blame] | 1226 | ch = c4_find_chan(channum); |
| 1227 | if (!ch) |
| 1228 | return -ENOENT; |
Daeseok Youn | 2ebd09ac | 2014-03-18 09:45:40 +0900 | [diff] [blame] | 1229 | |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1230 | if (ch->state == UP) |
| 1231 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 1232 | if (cxt1e1_log_level >= LOG_MONITOR) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1233 | pr_info("%s: channel already UP, graceful early exit\n", |
| 1234 | ci->devname); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1235 | return 0; |
| 1236 | } |
| 1237 | pi = ch->up; |
| 1238 | gchan = ch->gchan; |
| 1239 | /* find nts ('number of timeslots') */ |
| 1240 | nts = 0; |
| 1241 | for (i = 0; i < 32; i++) |
| 1242 | { |
| 1243 | if (ch->p.bitmask[i] & pi->tsm[i]) |
| 1244 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 1245 | if (1 || cxt1e1_log_level >= LOG_WARN) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1246 | { |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1247 | 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] | 1248 | ci->devname, channum, i); |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1249 | pr_info("+ ask4 %x, currently %x\n", |
| 1250 | ch->p.bitmask[i], pi->tsm[i]); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1251 | } |
Daeseok Youn | 2ebd09ac | 2014-03-18 09:45:40 +0900 | [diff] [blame] | 1252 | return -EINVAL; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1253 | } |
| 1254 | for (j = 0; j < 8; j++) |
| 1255 | if (ch->p.bitmask[i] & (1 << j)) |
| 1256 | nts++; |
| 1257 | } |
| 1258 | |
| 1259 | nbuf = nts / 8 ? nts / 8 : 1; |
| 1260 | if (!nbuf) |
| 1261 | { |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 1262 | /* if( cxt1e1_log_level >= LOG_WARN) */ |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1263 | pr_info("%s: c4_chan_up[%d] ENOBUFS (no TimeSlots assigned)\n", |
| 1264 | ci->devname, channum); |
Daeseok Youn | 2ebd09ac | 2014-03-18 09:45:40 +0900 | [diff] [blame] | 1265 | return -ENOBUFS; /* this should not happen */ |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1266 | } |
| 1267 | addr = c4_fifo_alloc (pi, gchan, &nbuf); |
| 1268 | ch->state = UP; |
| 1269 | |
| 1270 | /* Setup the Time Slot Map */ |
| 1271 | musycc_update_timeslots (pi); |
| 1272 | |
| 1273 | /* ch->tx_limit = nts; */ |
| 1274 | ch->s.tx_pending = 0; |
| 1275 | |
| 1276 | /* Set Channel Configuration Descriptors */ |
| 1277 | { |
| 1278 | u_int32_t ccd; |
| 1279 | |
| 1280 | ccd = musycc_chan_proto (ch->p.chan_mode) << MUSYCC_CCD_PROTO_SHIFT; |
| 1281 | if ((ch->p.chan_mode == CFG_CH_PROTO_ISLP_MODE) || |
| 1282 | (ch->p.chan_mode == CFG_CH_PROTO_TRANS)) |
| 1283 | { |
| 1284 | ccd |= MUSYCC_CCD_FCS_XFER; /* Non FSC Mode */ |
| 1285 | } |
| 1286 | ccd |= 2 << MUSYCC_CCD_MAX_LENGTH; /* Select second MTU */ |
| 1287 | ccd |= ch->p.intr_mask; |
| 1288 | ccd |= addr << MUSYCC_CCD_BUFFER_LOC; |
| 1289 | if (ch->p.chan_mode == CFG_CH_PROTO_TRANS) |
| 1290 | ccd |= (nbuf) << MUSYCC_CCD_BUFFER_LENGTH; |
| 1291 | else |
| 1292 | ccd |= (nbuf - 1) << MUSYCC_CCD_BUFFER_LENGTH; |
| 1293 | |
| 1294 | if (ch->p.data_inv & CFG_CH_DINV_TX) |
| 1295 | ccd |= MUSYCC_CCD_INVERT_DATA; /* Invert data */ |
| 1296 | pi->regram->tcct[gchan] = cpu_to_le32 (ccd); |
| 1297 | |
| 1298 | if (ch->p.data_inv & CFG_CH_DINV_RX) |
| 1299 | ccd |= MUSYCC_CCD_INVERT_DATA; /* Invert data */ |
| 1300 | else |
| 1301 | ccd &= ~MUSYCC_CCD_INVERT_DATA; /* take away data inversion */ |
| 1302 | pi->regram->rcct[gchan] = cpu_to_le32 (ccd); |
| 1303 | FLUSH_MEM_WRITE (); |
| 1304 | } |
| 1305 | |
| 1306 | /* Reread the Channel Configuration Descriptor for this channel */ |
| 1307 | musycc_serv_req (pi, SR_CHANNEL_CONFIG | SR_RX_DIRECTION | gchan); |
| 1308 | musycc_serv_req (pi, SR_CHANNEL_CONFIG | SR_TX_DIRECTION | gchan); |
| 1309 | |
| 1310 | /* |
| 1311 | * Figure out how many buffers we want. If the customer has changed from |
| 1312 | * the defaults, then use the changed values. Otherwise, use Transparent |
| 1313 | * mode's specific minimum default settings. |
| 1314 | */ |
| 1315 | if (ch->p.chan_mode == CFG_CH_PROTO_TRANS) |
| 1316 | { |
| 1317 | if (max_rxdesc_used == max_rxdesc_default) /* use default setting */ |
| 1318 | max_rxdesc_used = MUSYCC_RXDESC_TRANS; |
| 1319 | if (max_txdesc_used == max_txdesc_default) /* use default setting */ |
| 1320 | max_txdesc_used = MUSYCC_TXDESC_TRANS; |
| 1321 | } |
| 1322 | /* |
| 1323 | * Increase counts when hyperchanneling, since this implies an increase |
| 1324 | * in throughput per channel |
| 1325 | */ |
| 1326 | rxnum = max_rxdesc_used + (nts / 4); |
| 1327 | txnum = max_txdesc_used + (nts / 4); |
| 1328 | |
| 1329 | #if 0 |
| 1330 | /* DEBUG INFO */ |
Greg Kroah-Hartman | b8b7399 | 2010-12-10 10:46:30 -0800 | [diff] [blame] | 1331 | if (cxt1e1_log_level >= LOG_MONITOR) |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1332 | 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] | 1333 | ci->devname, ch->p.chan_mode, |
| 1334 | rxnum, max_rxdesc_used, max_rxdesc_default, |
| 1335 | txnum, max_txdesc_used, max_txdesc_default); |
| 1336 | #endif |
| 1337 | |
| 1338 | ch->rxd_num = rxnum; |
| 1339 | ch->txd_num = txnum; |
| 1340 | ch->rxix_irq_srv = 0; |
| 1341 | |
Daeseok Youn | 693d963 | 2014-04-18 09:31:35 +0900 | [diff] [blame] | 1342 | ch->mdr = kzalloc(sizeof(struct mdesc) * rxnum, GFP_KERNEL | GFP_DMA); |
| 1343 | ch->mdt = kzalloc(sizeof(struct mdesc) * txnum, GFP_KERNEL | GFP_DMA); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1344 | if (ch->p.chan_mode == CFG_CH_PROTO_TRANS) |
Bob Beers | c694ed8 | 2010-10-16 18:06:36 -0400 | [diff] [blame] | 1345 | tmp = __constant_cpu_to_le32 (cxt1e1_max_mru | EOBIRQ_ENABLE); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1346 | else |
Bob Beers | c694ed8 | 2010-10-16 18:06:36 -0400 | [diff] [blame] | 1347 | tmp = __constant_cpu_to_le32 (cxt1e1_max_mru); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1348 | |
| 1349 | for (i = 0, md = ch->mdr; i < rxnum; i++, md++) |
| 1350 | { |
| 1351 | if (i == (rxnum - 1)) |
| 1352 | { |
| 1353 | md->snext = &ch->mdr[0];/* wrapness */ |
| 1354 | } else |
| 1355 | { |
| 1356 | md->snext = &ch->mdr[i + 1]; |
| 1357 | } |
| 1358 | md->next = cpu_to_le32 (OS_vtophys (md->snext)); |
| 1359 | |
Chi Pham | 24e7d79 | 2014-03-12 16:36:19 +0100 | [diff] [blame] | 1360 | m = OS_mem_token_alloc(cxt1e1_max_mru); |
| 1361 | if (!m) { |
| 1362 | if (cxt1e1_log_level >= LOG_MONITOR) |
| 1363 | pr_info( |
| 1364 | "%s: c4_chan_up[%d] - token alloc failure, size = %d.\n", |
| 1365 | ci->devname, channum, cxt1e1_max_mru); |
| 1366 | goto errfree; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1367 | } |
| 1368 | md->mem_token = m; |
| 1369 | md->data = cpu_to_le32 (OS_vtophys (OS_mem_token_data (m))); |
| 1370 | md->status = tmp | MUSYCC_RX_OWNED; /* MUSYCC owns RX descriptor ** |
| 1371 | * CODING NOTE: |
| 1372 | * MUSYCC_RX_OWNED = 0 so no |
| 1373 | * need to byteSwap */ |
| 1374 | } |
| 1375 | |
| 1376 | for (i = 0, md = ch->mdt; i < txnum; i++, md++) |
| 1377 | { |
| 1378 | md->status = HOST_TX_OWNED; /* Host owns TX descriptor ** CODING |
| 1379 | * NOTE: HOST_TX_OWNED = 0 so no need to |
| 1380 | * byteSwap */ |
Sachin Kamat | 360d26e | 2013-09-27 09:36:35 +0530 | [diff] [blame] | 1381 | md->mem_token = NULL; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1382 | md->data = 0; |
| 1383 | if (i == (txnum - 1)) |
| 1384 | { |
| 1385 | md->snext = &ch->mdt[0];/* wrapness */ |
| 1386 | } else |
| 1387 | { |
| 1388 | md->snext = &ch->mdt[i + 1]; |
| 1389 | } |
| 1390 | md->next = cpu_to_le32 (OS_vtophys (md->snext)); |
| 1391 | } |
| 1392 | ch->txd_irq_srv = ch->txd_usr_add = &ch->mdt[0]; |
| 1393 | ch->txd_free = txnum; |
| 1394 | ch->tx_full = 0; |
| 1395 | ch->txd_required = 0; |
| 1396 | |
| 1397 | /* Configure it into the chip */ |
| 1398 | tmp = cpu_to_le32 (OS_vtophys (&ch->mdt[0])); |
| 1399 | pi->regram->thp[gchan] = tmp; |
| 1400 | pi->regram->tmp[gchan] = tmp; |
| 1401 | |
| 1402 | tmp = cpu_to_le32 (OS_vtophys (&ch->mdr[0])); |
| 1403 | pi->regram->rhp[gchan] = tmp; |
| 1404 | pi->regram->rmp[gchan] = tmp; |
| 1405 | |
| 1406 | /* Activate the Channel */ |
| 1407 | FLUSH_MEM_WRITE (); |
| 1408 | if (ch->p.status & RX_ENABLED) |
| 1409 | { |
| 1410 | #ifdef RLD_TRANS_DEBUG |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1411 | 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] | 1412 | #endif |
| 1413 | ch->ch_start_rx = 0; /* we are restarting RX... */ |
| 1414 | musycc_serv_req (pi, SR_CHANNEL_ACTIVATE | SR_RX_DIRECTION | gchan); |
| 1415 | } |
| 1416 | if (ch->p.status & TX_ENABLED) |
| 1417 | { |
| 1418 | #ifdef RLD_TRANS_DEBUG |
Joe Perches | 694a980 | 2010-05-03 12:33:16 -0700 | [diff] [blame] | 1419 | 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] | 1420 | #endif |
| 1421 | ch->ch_start_tx = CH_START_TX_1ST; /* we are delaying start |
| 1422 | * until receipt from user of |
| 1423 | * first packet to transmit. */ |
| 1424 | } |
| 1425 | ch->status = ch->p.status; |
| 1426 | pi->openchans++; |
| 1427 | return 0; |
| 1428 | |
| 1429 | errfree: |
| 1430 | while (i > 0) |
| 1431 | { |
| 1432 | /* Don't leak all the previously allocated mbufs in this loop */ |
| 1433 | i--; |
| 1434 | OS_mem_token_free (ch->mdr[i].mem_token); |
| 1435 | } |
Daeseok Youn | 693d963 | 2014-04-18 09:31:35 +0900 | [diff] [blame] | 1436 | kfree(ch->mdt); |
Sachin Kamat | 360d26e | 2013-09-27 09:36:35 +0530 | [diff] [blame] | 1437 | ch->mdt = NULL; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1438 | ch->txd_num = 0; |
Daeseok Youn | 693d963 | 2014-04-18 09:31:35 +0900 | [diff] [blame] | 1439 | kfree(ch->mdr); |
Sachin Kamat | 360d26e | 2013-09-27 09:36:35 +0530 | [diff] [blame] | 1440 | ch->mdr = NULL; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1441 | ch->rxd_num = 0; |
| 1442 | ch->state = DOWN; |
Daeseok Youn | 2ebd09ac | 2014-03-18 09:45:40 +0900 | [diff] [blame] | 1443 | return -ENOBUFS; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1444 | } |
| 1445 | |
| 1446 | /* stop the hardware from servicing & interrupting */ |
| 1447 | |
| 1448 | void |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 1449 | c4_stopwd (ci_t *ci) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1450 | { |
| 1451 | OS_stop_watchdog (&ci->wd); |
| 1452 | SD_SEM_TAKE (&ci->sem_wdbusy, "_stop_"); /* ensure WD not running */ |
| 1453 | SD_SEM_GIVE (&ci->sem_wdbusy); |
| 1454 | } |
| 1455 | |
| 1456 | |
| 1457 | void |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 1458 | sbecom_get_brdinfo (ci_t *ci, struct sbe_brd_info *bip, u_int8_t *bsn) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1459 | { |
| 1460 | char *np; |
| 1461 | u_int32_t sn = 0; |
| 1462 | int i; |
| 1463 | |
| 1464 | bip->brdno = ci->brdno; /* our board number */ |
| 1465 | bip->brd_id = ci->brd_id; |
| 1466 | bip->brd_hdw_id = ci->hdw_bid; |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 1467 | bip->brd_chan_cnt = MUSYCC_NCHANS *ci->max_port; /* number of channels |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1468 | * being used */ |
| 1469 | bip->brd_port_cnt = ci->max_port; /* number of ports being used */ |
| 1470 | bip->brd_pci_speed = BINFO_PCI_SPEED_unk; /* PCI speed not yet |
| 1471 | * determinable */ |
| 1472 | |
| 1473 | if (ci->first_if) |
| 1474 | { |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1475 | { |
| 1476 | struct net_device *dev; |
| 1477 | |
| 1478 | dev = (struct net_device *) ci->first_if; |
| 1479 | np = (char *) dev->name; |
| 1480 | } |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1481 | strncpy (bip->first_iname, np, CHNM_STRLEN - 1); |
| 1482 | } else |
| 1483 | strcpy (bip->first_iname, "<NULL>"); |
| 1484 | if (ci->last_if) |
| 1485 | { |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1486 | { |
| 1487 | struct net_device *dev; |
| 1488 | |
| 1489 | dev = (struct net_device *) ci->last_if; |
| 1490 | np = (char *) dev->name; |
| 1491 | } |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1492 | strncpy (bip->last_iname, np, CHNM_STRLEN - 1); |
| 1493 | } else |
| 1494 | strcpy (bip->last_iname, "<NULL>"); |
| 1495 | |
| 1496 | if (bsn) |
| 1497 | { |
| 1498 | for (i = 0; i < 3; i++) |
| 1499 | { |
| 1500 | bip->brd_mac_addr[i] = *bsn++; |
| 1501 | } |
| 1502 | for (; i < 6; i++) |
| 1503 | { |
| 1504 | bip->brd_mac_addr[i] = *bsn; |
| 1505 | sn = (sn << 8) | *bsn++; |
| 1506 | } |
| 1507 | } else |
| 1508 | { |
| 1509 | for (i = 0; i < 6; i++) |
| 1510 | bip->brd_mac_addr[i] = 0; |
| 1511 | } |
| 1512 | bip->brd_sn = sn; |
| 1513 | } |
| 1514 | |
| 1515 | |
| 1516 | status_t |
Dulshani Gunawardhana | ee1803c | 2013-05-22 23:29:26 +0530 | [diff] [blame] | 1517 | c4_get_iidinfo (ci_t *ci, struct sbe_iid_info *iip) |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1518 | { |
| 1519 | struct net_device *dev; |
| 1520 | char *np; |
| 1521 | |
Chi Pham | 24e7d79 | 2014-03-12 16:36:19 +0100 | [diff] [blame] | 1522 | dev = getuserbychan(iip->channum); |
| 1523 | if (!dev) |
| 1524 | return -ENOENT; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1525 | |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1526 | np = dev->name; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1527 | strncpy (iip->iname, np, CHNM_STRLEN - 1); |
Chen Gang | f1159d7 | 2013-04-07 18:01:48 +0800 | [diff] [blame] | 1528 | iip->iname[CHNM_STRLEN - 1] = '\0'; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1529 | return 0; |
| 1530 | } |
| 1531 | |
| 1532 | |
| 1533 | #ifdef CONFIG_SBE_PMCC4_NCOMM |
| 1534 | void (*nciInterrupt[MAX_BOARDS][4]) (void); |
| 1535 | extern void wanpmcC4T1E1_hookInterrupt (int cardID, int deviceID, void *handler); |
| 1536 | |
| 1537 | void |
| 1538 | wanpmcC4T1E1_hookInterrupt (int cardID, int deviceID, void *handler) |
| 1539 | { |
| 1540 | if (cardID < MAX_BOARDS) /* sanity check */ |
| 1541 | nciInterrupt[cardID][deviceID] = handler; |
| 1542 | } |
| 1543 | |
| 1544 | irqreturn_t |
| 1545 | c4_ebus_intr_th_handler (void *devp) |
| 1546 | { |
| 1547 | ci_t *ci = (ci_t *) devp; |
| 1548 | volatile u_int32_t ists; |
| 1549 | int handled = 0; |
| 1550 | int brdno; |
| 1551 | |
| 1552 | /* which COMET caused the interrupt */ |
| 1553 | brdno = ci->brdno; |
| 1554 | ists = pci_read_32 ((u_int32_t *) &ci->cpldbase->intr); |
| 1555 | if (ists & PMCC4_CPLD_INTR_CMT_1) |
| 1556 | { |
| 1557 | handled = 0x1; |
| 1558 | if (nciInterrupt[brdno][0] != NULL) |
| 1559 | (*nciInterrupt[brdno][0]) (); |
| 1560 | } |
| 1561 | if (ists & PMCC4_CPLD_INTR_CMT_2) |
| 1562 | { |
| 1563 | handled |= 0x2; |
| 1564 | if (nciInterrupt[brdno][1] != NULL) |
| 1565 | (*nciInterrupt[brdno][1]) (); |
| 1566 | } |
| 1567 | if (ists & PMCC4_CPLD_INTR_CMT_3) |
| 1568 | { |
| 1569 | handled |= 0x4; |
| 1570 | if (nciInterrupt[brdno][2] != NULL) |
| 1571 | (*nciInterrupt[brdno][2]) (); |
| 1572 | } |
| 1573 | if (ists & PMCC4_CPLD_INTR_CMT_4) |
| 1574 | { |
| 1575 | handled |= 0x8; |
| 1576 | if (nciInterrupt[brdno][3] != NULL) |
| 1577 | (*nciInterrupt[brdno][3]) (); |
| 1578 | } |
| 1579 | #if 0 |
| 1580 | /*** Test code just de-implements the asserted interrupt. Alternate |
| 1581 | vendor will supply COMET interrupt handling code herein or such. |
| 1582 | ***/ |
| 1583 | pci_write_32 ((u_int32_t *) &ci->reg->glcd, GCD_MAGIC | MUSYCC_GCD_INTB_DISABLE); |
| 1584 | #endif |
| 1585 | |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1586 | return IRQ_RETVAL (handled); |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1587 | } |
| 1588 | |
| 1589 | |
| 1590 | unsigned long |
| 1591 | wanpmcC4T1E1_getBaseAddress (int cardID, int deviceID) |
| 1592 | { |
| 1593 | ci_t *ci; |
| 1594 | unsigned long base = 0; |
| 1595 | |
| 1596 | ci = c4_list; |
| 1597 | while (ci) |
| 1598 | { |
| 1599 | if (ci->brdno == cardID) /* found valid device */ |
| 1600 | { |
| 1601 | if (deviceID < ci->max_port) /* comet is supported */ |
| 1602 | base = ((unsigned long) ci->port[deviceID].cometbase); |
| 1603 | break; |
| 1604 | } |
| 1605 | ci = ci->next; /* next board, if any */ |
| 1606 | } |
Dulshani Gunawardhana | bcf636d | 2013-05-22 23:30:45 +0530 | [diff] [blame] | 1607 | return base; |
Bob Beers | 50ee11f | 2010-03-04 08:40:46 -0500 | [diff] [blame] | 1608 | } |
| 1609 | |
| 1610 | #endif /*** CONFIG_SBE_PMCC4_NCOMM ***/ |
| 1611 | |
| 1612 | |
| 1613 | /*** End-of-File ***/ |