Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: isac.c,v 1.31.2.3 2004/01/13 14:31:25 keil Exp $ |
| 2 | * |
| 3 | * ISAC specific routines |
| 4 | * |
| 5 | * Author Karsten Keil |
| 6 | * Copyright by Karsten Keil <keil@isdn4linux.de> |
| 7 | * |
| 8 | * This software may be used and distributed according to the terms |
| 9 | * of the GNU General Public License, incorporated herein by reference. |
| 10 | * |
| 11 | * For changes and modifications please read |
| 12 | * Documentation/isdn/HiSax.cert |
| 13 | * |
| 14 | */ |
| 15 | |
| 16 | #include "hisax.h" |
| 17 | #include "isac.h" |
| 18 | #include "arcofi.h" |
| 19 | #include "isdnl1.h" |
| 20 | #include <linux/interrupt.h> |
| 21 | #include <linux/init.h> |
| 22 | |
| 23 | #define DBUSY_TIMER_VALUE 80 |
| 24 | #define ARCOFI_USE 1 |
| 25 | |
| 26 | static char *ISACVer[] __devinitdata = |
| 27 | {"2086/2186 V1.1", "2085 B1", "2085 B2", |
| 28 | "2085 V2.3"}; |
| 29 | |
Sam Ravnborg | f4e6433 | 2008-02-09 23:29:28 -0800 | [diff] [blame] | 30 | void __devinit ISACVersion(struct IsdnCardState *cs, char *s) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | { |
| 32 | int val; |
| 33 | |
| 34 | val = cs->readisac(cs, ISAC_RBCH); |
| 35 | printk(KERN_INFO "%s ISAC version (%x): %s\n", s, val, ISACVer[(val >> 5) & 3]); |
| 36 | } |
| 37 | |
| 38 | static void |
| 39 | ph_command(struct IsdnCardState *cs, unsigned int command) |
| 40 | { |
| 41 | if (cs->debug & L1_DEB_ISAC) |
| 42 | debugl1(cs, "ph_command %x", command); |
| 43 | cs->writeisac(cs, ISAC_CIX0, (command << 2) | 3); |
| 44 | } |
| 45 | |
| 46 | |
| 47 | static void |
| 48 | isac_new_ph(struct IsdnCardState *cs) |
| 49 | { |
| 50 | switch (cs->dc.isac.ph_state) { |
| 51 | case (ISAC_IND_RS): |
| 52 | case (ISAC_IND_EI): |
| 53 | ph_command(cs, ISAC_CMD_DUI); |
| 54 | l1_msg(cs, HW_RESET | INDICATION, NULL); |
| 55 | break; |
| 56 | case (ISAC_IND_DID): |
| 57 | l1_msg(cs, HW_DEACTIVATE | CONFIRM, NULL); |
| 58 | break; |
| 59 | case (ISAC_IND_DR): |
| 60 | l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL); |
| 61 | break; |
| 62 | case (ISAC_IND_PU): |
| 63 | l1_msg(cs, HW_POWERUP | CONFIRM, NULL); |
| 64 | break; |
| 65 | case (ISAC_IND_RSY): |
| 66 | l1_msg(cs, HW_RSYNC | INDICATION, NULL); |
| 67 | break; |
| 68 | case (ISAC_IND_ARD): |
| 69 | l1_msg(cs, HW_INFO2 | INDICATION, NULL); |
| 70 | break; |
| 71 | case (ISAC_IND_AI8): |
| 72 | l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL); |
| 73 | break; |
| 74 | case (ISAC_IND_AI10): |
| 75 | l1_msg(cs, HW_INFO4_P10 | INDICATION, NULL); |
| 76 | break; |
| 77 | default: |
| 78 | break; |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | static void |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 83 | isac_bh(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 85 | struct IsdnCardState *cs = |
| 86 | container_of(work, struct IsdnCardState, tqueue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | struct PStack *stptr; |
| 88 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | if (test_and_clear_bit(D_CLEARBUSY, &cs->event)) { |
| 90 | if (cs->debug) |
| 91 | debugl1(cs, "D-Channel Busy cleared"); |
| 92 | stptr = cs->stlist; |
| 93 | while (stptr != NULL) { |
| 94 | stptr->l1.l1l2(stptr, PH_PAUSE | CONFIRM, NULL); |
| 95 | stptr = stptr->next; |
| 96 | } |
| 97 | } |
| 98 | if (test_and_clear_bit(D_L1STATECHANGE, &cs->event)) |
| 99 | isac_new_ph(cs); |
| 100 | if (test_and_clear_bit(D_RCVBUFREADY, &cs->event)) |
| 101 | DChannel_proc_rcv(cs); |
| 102 | if (test_and_clear_bit(D_XMTBUFREADY, &cs->event)) |
| 103 | DChannel_proc_xmt(cs); |
| 104 | #if ARCOFI_USE |
| 105 | if (!test_bit(HW_ARCOFI, &cs->HW_Flags)) |
| 106 | return; |
| 107 | if (test_and_clear_bit(D_RX_MON1, &cs->event)) |
| 108 | arcofi_fsm(cs, ARCOFI_RX_END, NULL); |
| 109 | if (test_and_clear_bit(D_TX_MON1, &cs->event)) |
| 110 | arcofi_fsm(cs, ARCOFI_TX_END, NULL); |
| 111 | #endif |
| 112 | } |
| 113 | |
Adrian Bunk | 672c3fd | 2005-06-25 14:59:18 -0700 | [diff] [blame] | 114 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | isac_empty_fifo(struct IsdnCardState *cs, int count) |
| 116 | { |
| 117 | u_char *ptr; |
| 118 | |
| 119 | if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO)) |
| 120 | debugl1(cs, "isac_empty_fifo"); |
| 121 | |
| 122 | if ((cs->rcvidx + count) >= MAX_DFRAME_LEN_L1) { |
| 123 | if (cs->debug & L1_DEB_WARN) |
| 124 | debugl1(cs, "isac_empty_fifo overrun %d", |
| 125 | cs->rcvidx + count); |
| 126 | cs->writeisac(cs, ISAC_CMDR, 0x80); |
| 127 | cs->rcvidx = 0; |
| 128 | return; |
| 129 | } |
| 130 | ptr = cs->rcvbuf + cs->rcvidx; |
| 131 | cs->rcvidx += count; |
| 132 | cs->readisacfifo(cs, ptr, count); |
| 133 | cs->writeisac(cs, ISAC_CMDR, 0x80); |
| 134 | if (cs->debug & L1_DEB_ISAC_FIFO) { |
| 135 | char *t = cs->dlog; |
| 136 | |
| 137 | t += sprintf(t, "isac_empty_fifo cnt %d", count); |
| 138 | QuickHex(t, ptr, count); |
| 139 | debugl1(cs, cs->dlog); |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | static void |
| 144 | isac_fill_fifo(struct IsdnCardState *cs) |
| 145 | { |
| 146 | int count, more; |
| 147 | u_char *ptr; |
| 148 | |
| 149 | if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO)) |
| 150 | debugl1(cs, "isac_fill_fifo"); |
| 151 | |
| 152 | if (!cs->tx_skb) |
| 153 | return; |
| 154 | |
| 155 | count = cs->tx_skb->len; |
| 156 | if (count <= 0) |
| 157 | return; |
| 158 | |
| 159 | more = 0; |
| 160 | if (count > 32) { |
| 161 | more = !0; |
| 162 | count = 32; |
| 163 | } |
| 164 | ptr = cs->tx_skb->data; |
| 165 | skb_pull(cs->tx_skb, count); |
| 166 | cs->tx_cnt += count; |
| 167 | cs->writeisacfifo(cs, ptr, count); |
| 168 | cs->writeisac(cs, ISAC_CMDR, more ? 0x8 : 0xa); |
| 169 | if (test_and_set_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) { |
| 170 | debugl1(cs, "isac_fill_fifo dbusytimer running"); |
| 171 | del_timer(&cs->dbusytimer); |
| 172 | } |
| 173 | init_timer(&cs->dbusytimer); |
| 174 | cs->dbusytimer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ)/1000); |
| 175 | add_timer(&cs->dbusytimer); |
| 176 | if (cs->debug & L1_DEB_ISAC_FIFO) { |
| 177 | char *t = cs->dlog; |
| 178 | |
| 179 | t += sprintf(t, "isac_fill_fifo cnt %d", count); |
| 180 | QuickHex(t, ptr, count); |
| 181 | debugl1(cs, cs->dlog); |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | void |
| 186 | isac_interrupt(struct IsdnCardState *cs, u_char val) |
| 187 | { |
| 188 | u_char exval, v1; |
| 189 | struct sk_buff *skb; |
| 190 | unsigned int count; |
| 191 | |
| 192 | if (cs->debug & L1_DEB_ISAC) |
| 193 | debugl1(cs, "ISAC interrupt %x", val); |
| 194 | if (val & 0x80) { /* RME */ |
| 195 | exval = cs->readisac(cs, ISAC_RSTA); |
| 196 | if ((exval & 0x70) != 0x20) { |
| 197 | if (exval & 0x40) { |
| 198 | if (cs->debug & L1_DEB_WARN) |
| 199 | debugl1(cs, "ISAC RDO"); |
| 200 | #ifdef ERROR_STATISTIC |
| 201 | cs->err_rx++; |
| 202 | #endif |
| 203 | } |
| 204 | if (!(exval & 0x20)) { |
| 205 | if (cs->debug & L1_DEB_WARN) |
| 206 | debugl1(cs, "ISAC CRC error"); |
| 207 | #ifdef ERROR_STATISTIC |
| 208 | cs->err_crc++; |
| 209 | #endif |
| 210 | } |
| 211 | cs->writeisac(cs, ISAC_CMDR, 0x80); |
| 212 | } else { |
| 213 | count = cs->readisac(cs, ISAC_RBCL) & 0x1f; |
| 214 | if (count == 0) |
| 215 | count = 32; |
| 216 | isac_empty_fifo(cs, count); |
| 217 | if ((count = cs->rcvidx) > 0) { |
| 218 | cs->rcvidx = 0; |
| 219 | if (!(skb = alloc_skb(count, GFP_ATOMIC))) |
| 220 | printk(KERN_WARNING "HiSax: D receive out of memory\n"); |
| 221 | else { |
| 222 | memcpy(skb_put(skb, count), cs->rcvbuf, count); |
| 223 | skb_queue_tail(&cs->rq, skb); |
| 224 | } |
| 225 | } |
| 226 | } |
| 227 | cs->rcvidx = 0; |
| 228 | schedule_event(cs, D_RCVBUFREADY); |
| 229 | } |
| 230 | if (val & 0x40) { /* RPF */ |
| 231 | isac_empty_fifo(cs, 32); |
| 232 | } |
| 233 | if (val & 0x20) { /* RSC */ |
| 234 | /* never */ |
| 235 | if (cs->debug & L1_DEB_WARN) |
| 236 | debugl1(cs, "ISAC RSC interrupt"); |
| 237 | } |
| 238 | if (val & 0x10) { /* XPR */ |
| 239 | if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) |
| 240 | del_timer(&cs->dbusytimer); |
| 241 | if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags)) |
| 242 | schedule_event(cs, D_CLEARBUSY); |
| 243 | if (cs->tx_skb) { |
| 244 | if (cs->tx_skb->len) { |
| 245 | isac_fill_fifo(cs); |
| 246 | goto afterXPR; |
| 247 | } else { |
| 248 | dev_kfree_skb_irq(cs->tx_skb); |
| 249 | cs->tx_cnt = 0; |
| 250 | cs->tx_skb = NULL; |
| 251 | } |
| 252 | } |
| 253 | if ((cs->tx_skb = skb_dequeue(&cs->sq))) { |
| 254 | cs->tx_cnt = 0; |
| 255 | isac_fill_fifo(cs); |
| 256 | } else |
| 257 | schedule_event(cs, D_XMTBUFREADY); |
| 258 | } |
| 259 | afterXPR: |
| 260 | if (val & 0x04) { /* CISQ */ |
| 261 | exval = cs->readisac(cs, ISAC_CIR0); |
| 262 | if (cs->debug & L1_DEB_ISAC) |
| 263 | debugl1(cs, "ISAC CIR0 %02X", exval ); |
| 264 | if (exval & 2) { |
| 265 | cs->dc.isac.ph_state = (exval >> 2) & 0xf; |
| 266 | if (cs->debug & L1_DEB_ISAC) |
| 267 | debugl1(cs, "ph_state change %x", cs->dc.isac.ph_state); |
| 268 | schedule_event(cs, D_L1STATECHANGE); |
| 269 | } |
| 270 | if (exval & 1) { |
| 271 | exval = cs->readisac(cs, ISAC_CIR1); |
| 272 | if (cs->debug & L1_DEB_ISAC) |
| 273 | debugl1(cs, "ISAC CIR1 %02X", exval ); |
| 274 | } |
| 275 | } |
| 276 | if (val & 0x02) { /* SIN */ |
| 277 | /* never */ |
| 278 | if (cs->debug & L1_DEB_WARN) |
| 279 | debugl1(cs, "ISAC SIN interrupt"); |
| 280 | } |
| 281 | if (val & 0x01) { /* EXI */ |
| 282 | exval = cs->readisac(cs, ISAC_EXIR); |
| 283 | if (cs->debug & L1_DEB_WARN) |
| 284 | debugl1(cs, "ISAC EXIR %02x", exval); |
| 285 | if (exval & 0x80) { /* XMR */ |
| 286 | debugl1(cs, "ISAC XMR"); |
| 287 | printk(KERN_WARNING "HiSax: ISAC XMR\n"); |
| 288 | } |
| 289 | if (exval & 0x40) { /* XDU */ |
| 290 | debugl1(cs, "ISAC XDU"); |
| 291 | printk(KERN_WARNING "HiSax: ISAC XDU\n"); |
| 292 | #ifdef ERROR_STATISTIC |
| 293 | cs->err_tx++; |
| 294 | #endif |
| 295 | if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) |
| 296 | del_timer(&cs->dbusytimer); |
| 297 | if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags)) |
| 298 | schedule_event(cs, D_CLEARBUSY); |
| 299 | if (cs->tx_skb) { /* Restart frame */ |
| 300 | skb_push(cs->tx_skb, cs->tx_cnt); |
| 301 | cs->tx_cnt = 0; |
| 302 | isac_fill_fifo(cs); |
| 303 | } else { |
| 304 | printk(KERN_WARNING "HiSax: ISAC XDU no skb\n"); |
| 305 | debugl1(cs, "ISAC XDU no skb"); |
| 306 | } |
| 307 | } |
| 308 | if (exval & 0x04) { /* MOS */ |
| 309 | v1 = cs->readisac(cs, ISAC_MOSR); |
| 310 | if (cs->debug & L1_DEB_MONITOR) |
| 311 | debugl1(cs, "ISAC MOSR %02x", v1); |
| 312 | #if ARCOFI_USE |
| 313 | if (v1 & 0x08) { |
| 314 | if (!cs->dc.isac.mon_rx) { |
| 315 | if (!(cs->dc.isac.mon_rx = kmalloc(MAX_MON_FRAME, GFP_ATOMIC))) { |
| 316 | if (cs->debug & L1_DEB_WARN) |
| 317 | debugl1(cs, "ISAC MON RX out of memory!"); |
| 318 | cs->dc.isac.mocr &= 0xf0; |
| 319 | cs->dc.isac.mocr |= 0x0a; |
| 320 | cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); |
| 321 | goto afterMONR0; |
| 322 | } else |
| 323 | cs->dc.isac.mon_rxp = 0; |
| 324 | } |
| 325 | if (cs->dc.isac.mon_rxp >= MAX_MON_FRAME) { |
| 326 | cs->dc.isac.mocr &= 0xf0; |
| 327 | cs->dc.isac.mocr |= 0x0a; |
| 328 | cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); |
| 329 | cs->dc.isac.mon_rxp = 0; |
| 330 | if (cs->debug & L1_DEB_WARN) |
| 331 | debugl1(cs, "ISAC MON RX overflow!"); |
| 332 | goto afterMONR0; |
| 333 | } |
| 334 | cs->dc.isac.mon_rx[cs->dc.isac.mon_rxp++] = cs->readisac(cs, ISAC_MOR0); |
| 335 | if (cs->debug & L1_DEB_MONITOR) |
| 336 | debugl1(cs, "ISAC MOR0 %02x", cs->dc.isac.mon_rx[cs->dc.isac.mon_rxp -1]); |
| 337 | if (cs->dc.isac.mon_rxp == 1) { |
| 338 | cs->dc.isac.mocr |= 0x04; |
| 339 | cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); |
| 340 | } |
| 341 | } |
| 342 | afterMONR0: |
| 343 | if (v1 & 0x80) { |
| 344 | if (!cs->dc.isac.mon_rx) { |
| 345 | if (!(cs->dc.isac.mon_rx = kmalloc(MAX_MON_FRAME, GFP_ATOMIC))) { |
| 346 | if (cs->debug & L1_DEB_WARN) |
| 347 | debugl1(cs, "ISAC MON RX out of memory!"); |
| 348 | cs->dc.isac.mocr &= 0x0f; |
| 349 | cs->dc.isac.mocr |= 0xa0; |
| 350 | cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); |
| 351 | goto afterMONR1; |
| 352 | } else |
| 353 | cs->dc.isac.mon_rxp = 0; |
| 354 | } |
| 355 | if (cs->dc.isac.mon_rxp >= MAX_MON_FRAME) { |
| 356 | cs->dc.isac.mocr &= 0x0f; |
| 357 | cs->dc.isac.mocr |= 0xa0; |
| 358 | cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); |
| 359 | cs->dc.isac.mon_rxp = 0; |
| 360 | if (cs->debug & L1_DEB_WARN) |
| 361 | debugl1(cs, "ISAC MON RX overflow!"); |
| 362 | goto afterMONR1; |
| 363 | } |
| 364 | cs->dc.isac.mon_rx[cs->dc.isac.mon_rxp++] = cs->readisac(cs, ISAC_MOR1); |
| 365 | if (cs->debug & L1_DEB_MONITOR) |
| 366 | debugl1(cs, "ISAC MOR1 %02x", cs->dc.isac.mon_rx[cs->dc.isac.mon_rxp -1]); |
| 367 | cs->dc.isac.mocr |= 0x40; |
| 368 | cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); |
| 369 | } |
| 370 | afterMONR1: |
| 371 | if (v1 & 0x04) { |
| 372 | cs->dc.isac.mocr &= 0xf0; |
| 373 | cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); |
| 374 | cs->dc.isac.mocr |= 0x0a; |
| 375 | cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); |
| 376 | schedule_event(cs, D_RX_MON0); |
| 377 | } |
| 378 | if (v1 & 0x40) { |
| 379 | cs->dc.isac.mocr &= 0x0f; |
| 380 | cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); |
| 381 | cs->dc.isac.mocr |= 0xa0; |
| 382 | cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); |
| 383 | schedule_event(cs, D_RX_MON1); |
| 384 | } |
| 385 | if (v1 & 0x02) { |
| 386 | if ((!cs->dc.isac.mon_tx) || (cs->dc.isac.mon_txc && |
| 387 | (cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc) && |
| 388 | !(v1 & 0x08))) { |
| 389 | cs->dc.isac.mocr &= 0xf0; |
| 390 | cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); |
| 391 | cs->dc.isac.mocr |= 0x0a; |
| 392 | cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); |
| 393 | if (cs->dc.isac.mon_txc && |
| 394 | (cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc)) |
| 395 | schedule_event(cs, D_TX_MON0); |
| 396 | goto AfterMOX0; |
| 397 | } |
| 398 | if (cs->dc.isac.mon_txc && (cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc)) { |
| 399 | schedule_event(cs, D_TX_MON0); |
| 400 | goto AfterMOX0; |
| 401 | } |
| 402 | cs->writeisac(cs, ISAC_MOX0, |
| 403 | cs->dc.isac.mon_tx[cs->dc.isac.mon_txp++]); |
| 404 | if (cs->debug & L1_DEB_MONITOR) |
| 405 | debugl1(cs, "ISAC %02x -> MOX0", cs->dc.isac.mon_tx[cs->dc.isac.mon_txp -1]); |
| 406 | } |
| 407 | AfterMOX0: |
| 408 | if (v1 & 0x20) { |
| 409 | if ((!cs->dc.isac.mon_tx) || (cs->dc.isac.mon_txc && |
| 410 | (cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc) && |
| 411 | !(v1 & 0x80))) { |
| 412 | cs->dc.isac.mocr &= 0x0f; |
| 413 | cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); |
| 414 | cs->dc.isac.mocr |= 0xa0; |
| 415 | cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); |
| 416 | if (cs->dc.isac.mon_txc && |
| 417 | (cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc)) |
| 418 | schedule_event(cs, D_TX_MON1); |
| 419 | goto AfterMOX1; |
| 420 | } |
| 421 | if (cs->dc.isac.mon_txc && (cs->dc.isac.mon_txp >= cs->dc.isac.mon_txc)) { |
| 422 | schedule_event(cs, D_TX_MON1); |
| 423 | goto AfterMOX1; |
| 424 | } |
| 425 | cs->writeisac(cs, ISAC_MOX1, |
| 426 | cs->dc.isac.mon_tx[cs->dc.isac.mon_txp++]); |
| 427 | if (cs->debug & L1_DEB_MONITOR) |
| 428 | debugl1(cs, "ISAC %02x -> MOX1", cs->dc.isac.mon_tx[cs->dc.isac.mon_txp -1]); |
| 429 | } |
| 430 | AfterMOX1:; |
| 431 | #endif |
| 432 | } |
| 433 | } |
| 434 | } |
| 435 | |
| 436 | static void |
| 437 | ISAC_l1hw(struct PStack *st, int pr, void *arg) |
| 438 | { |
| 439 | struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware; |
| 440 | struct sk_buff *skb = arg; |
| 441 | u_long flags; |
| 442 | int val; |
| 443 | |
| 444 | switch (pr) { |
| 445 | case (PH_DATA |REQUEST): |
| 446 | if (cs->debug & DEB_DLOG_HEX) |
| 447 | LogFrame(cs, skb->data, skb->len); |
| 448 | if (cs->debug & DEB_DLOG_VERBOSE) |
| 449 | dlogframe(cs, skb, 0); |
| 450 | spin_lock_irqsave(&cs->lock, flags); |
| 451 | if (cs->tx_skb) { |
| 452 | skb_queue_tail(&cs->sq, skb); |
| 453 | #ifdef L2FRAME_DEBUG /* psa */ |
| 454 | if (cs->debug & L1_DEB_LAPD) |
| 455 | Logl2Frame(cs, skb, "PH_DATA Queued", 0); |
| 456 | #endif |
| 457 | } else { |
| 458 | cs->tx_skb = skb; |
| 459 | cs->tx_cnt = 0; |
| 460 | #ifdef L2FRAME_DEBUG /* psa */ |
| 461 | if (cs->debug & L1_DEB_LAPD) |
| 462 | Logl2Frame(cs, skb, "PH_DATA", 0); |
| 463 | #endif |
| 464 | isac_fill_fifo(cs); |
| 465 | } |
| 466 | spin_unlock_irqrestore(&cs->lock, flags); |
| 467 | break; |
| 468 | case (PH_PULL |INDICATION): |
| 469 | spin_lock_irqsave(&cs->lock, flags); |
| 470 | if (cs->tx_skb) { |
| 471 | if (cs->debug & L1_DEB_WARN) |
| 472 | debugl1(cs, " l2l1 tx_skb exist this shouldn't happen"); |
| 473 | skb_queue_tail(&cs->sq, skb); |
| 474 | } else { |
| 475 | if (cs->debug & DEB_DLOG_HEX) |
| 476 | LogFrame(cs, skb->data, skb->len); |
| 477 | if (cs->debug & DEB_DLOG_VERBOSE) |
| 478 | dlogframe(cs, skb, 0); |
| 479 | cs->tx_skb = skb; |
| 480 | cs->tx_cnt = 0; |
| 481 | #ifdef L2FRAME_DEBUG /* psa */ |
| 482 | if (cs->debug & L1_DEB_LAPD) |
| 483 | Logl2Frame(cs, skb, "PH_DATA_PULLED", 0); |
| 484 | #endif |
| 485 | isac_fill_fifo(cs); |
| 486 | } |
| 487 | spin_unlock_irqrestore(&cs->lock, flags); |
| 488 | break; |
| 489 | case (PH_PULL | REQUEST): |
| 490 | #ifdef L2FRAME_DEBUG /* psa */ |
| 491 | if (cs->debug & L1_DEB_LAPD) |
| 492 | debugl1(cs, "-> PH_REQUEST_PULL"); |
| 493 | #endif |
| 494 | if (!cs->tx_skb) { |
| 495 | test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags); |
| 496 | st->l1.l1l2(st, PH_PULL | CONFIRM, NULL); |
| 497 | } else |
| 498 | test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags); |
| 499 | break; |
| 500 | case (HW_RESET | REQUEST): |
| 501 | spin_lock_irqsave(&cs->lock, flags); |
| 502 | if ((cs->dc.isac.ph_state == ISAC_IND_EI) || |
| 503 | (cs->dc.isac.ph_state == ISAC_IND_DR) || |
| 504 | (cs->dc.isac.ph_state == ISAC_IND_RS)) |
| 505 | ph_command(cs, ISAC_CMD_TIM); |
| 506 | else |
| 507 | ph_command(cs, ISAC_CMD_RS); |
| 508 | spin_unlock_irqrestore(&cs->lock, flags); |
| 509 | break; |
| 510 | case (HW_ENABLE | REQUEST): |
| 511 | spin_lock_irqsave(&cs->lock, flags); |
| 512 | ph_command(cs, ISAC_CMD_TIM); |
| 513 | spin_unlock_irqrestore(&cs->lock, flags); |
| 514 | break; |
| 515 | case (HW_INFO3 | REQUEST): |
| 516 | spin_lock_irqsave(&cs->lock, flags); |
| 517 | ph_command(cs, ISAC_CMD_AR8); |
| 518 | spin_unlock_irqrestore(&cs->lock, flags); |
| 519 | break; |
| 520 | case (HW_TESTLOOP | REQUEST): |
| 521 | spin_lock_irqsave(&cs->lock, flags); |
| 522 | val = 0; |
| 523 | if (1 & (long) arg) |
| 524 | val |= 0x0c; |
| 525 | if (2 & (long) arg) |
| 526 | val |= 0x3; |
| 527 | if (test_bit(HW_IOM1, &cs->HW_Flags)) { |
| 528 | /* IOM 1 Mode */ |
| 529 | if (!val) { |
| 530 | cs->writeisac(cs, ISAC_SPCR, 0xa); |
| 531 | cs->writeisac(cs, ISAC_ADF1, 0x2); |
| 532 | } else { |
| 533 | cs->writeisac(cs, ISAC_SPCR, val); |
| 534 | cs->writeisac(cs, ISAC_ADF1, 0xa); |
| 535 | } |
| 536 | } else { |
| 537 | /* IOM 2 Mode */ |
| 538 | cs->writeisac(cs, ISAC_SPCR, val); |
| 539 | if (val) |
| 540 | cs->writeisac(cs, ISAC_ADF1, 0x8); |
| 541 | else |
| 542 | cs->writeisac(cs, ISAC_ADF1, 0x0); |
| 543 | } |
| 544 | spin_unlock_irqrestore(&cs->lock, flags); |
| 545 | break; |
| 546 | case (HW_DEACTIVATE | RESPONSE): |
| 547 | skb_queue_purge(&cs->rq); |
| 548 | skb_queue_purge(&cs->sq); |
| 549 | if (cs->tx_skb) { |
| 550 | dev_kfree_skb_any(cs->tx_skb); |
| 551 | cs->tx_skb = NULL; |
| 552 | } |
| 553 | if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) |
| 554 | del_timer(&cs->dbusytimer); |
| 555 | if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags)) |
| 556 | schedule_event(cs, D_CLEARBUSY); |
| 557 | break; |
| 558 | default: |
| 559 | if (cs->debug & L1_DEB_WARN) |
| 560 | debugl1(cs, "isac_l1hw unknown %04x", pr); |
| 561 | break; |
| 562 | } |
| 563 | } |
| 564 | |
Adrian Bunk | 672c3fd | 2005-06-25 14:59:18 -0700 | [diff] [blame] | 565 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | setstack_isac(struct PStack *st, struct IsdnCardState *cs) |
| 567 | { |
| 568 | st->l1.l1hw = ISAC_l1hw; |
| 569 | } |
| 570 | |
Adrian Bunk | 672c3fd | 2005-06-25 14:59:18 -0700 | [diff] [blame] | 571 | static void |
Jesper Juhl | 3c7208f | 2005-11-07 01:01:29 -0800 | [diff] [blame] | 572 | DC_Close_isac(struct IsdnCardState *cs) |
| 573 | { |
| 574 | kfree(cs->dc.isac.mon_rx); |
| 575 | cs->dc.isac.mon_rx = NULL; |
| 576 | kfree(cs->dc.isac.mon_tx); |
| 577 | cs->dc.isac.mon_tx = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | } |
| 579 | |
| 580 | static void |
| 581 | dbusy_timer_handler(struct IsdnCardState *cs) |
| 582 | { |
| 583 | struct PStack *stptr; |
| 584 | int rbch, star; |
| 585 | |
| 586 | if (test_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) { |
| 587 | rbch = cs->readisac(cs, ISAC_RBCH); |
| 588 | star = cs->readisac(cs, ISAC_STAR); |
| 589 | if (cs->debug) |
| 590 | debugl1(cs, "D-Channel Busy RBCH %02x STAR %02x", |
| 591 | rbch, star); |
| 592 | if (rbch & ISAC_RBCH_XAC) { /* D-Channel Busy */ |
| 593 | test_and_set_bit(FLG_L1_DBUSY, &cs->HW_Flags); |
| 594 | stptr = cs->stlist; |
| 595 | while (stptr != NULL) { |
| 596 | stptr->l1.l1l2(stptr, PH_PAUSE | INDICATION, NULL); |
| 597 | stptr = stptr->next; |
| 598 | } |
| 599 | } else { |
| 600 | /* discard frame; reset transceiver */ |
| 601 | test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags); |
| 602 | if (cs->tx_skb) { |
| 603 | dev_kfree_skb_any(cs->tx_skb); |
| 604 | cs->tx_cnt = 0; |
| 605 | cs->tx_skb = NULL; |
| 606 | } else { |
| 607 | printk(KERN_WARNING "HiSax: ISAC D-Channel Busy no skb\n"); |
| 608 | debugl1(cs, "D-Channel Busy no skb"); |
| 609 | } |
| 610 | cs->writeisac(cs, ISAC_CMDR, 0x01); /* Transmitter reset */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 611 | cs->irq_func(cs->irq, cs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | } |
| 613 | } |
| 614 | } |
| 615 | |
Sam Ravnborg | d348c2a | 2008-02-09 23:28:12 -0800 | [diff] [blame] | 616 | void initisac(struct IsdnCardState *cs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | { |
| 618 | cs->setstack_d = setstack_isac; |
| 619 | cs->DC_Close = DC_Close_isac; |
| 620 | cs->dc.isac.mon_tx = NULL; |
| 621 | cs->dc.isac.mon_rx = NULL; |
| 622 | cs->writeisac(cs, ISAC_MASK, 0xff); |
| 623 | cs->dc.isac.mocr = 0xaa; |
| 624 | if (test_bit(HW_IOM1, &cs->HW_Flags)) { |
| 625 | /* IOM 1 Mode */ |
| 626 | cs->writeisac(cs, ISAC_ADF2, 0x0); |
| 627 | cs->writeisac(cs, ISAC_SPCR, 0xa); |
| 628 | cs->writeisac(cs, ISAC_ADF1, 0x2); |
| 629 | cs->writeisac(cs, ISAC_STCR, 0x70); |
| 630 | cs->writeisac(cs, ISAC_MODE, 0xc9); |
| 631 | } else { |
| 632 | /* IOM 2 Mode */ |
| 633 | if (!cs->dc.isac.adf2) |
| 634 | cs->dc.isac.adf2 = 0x80; |
| 635 | cs->writeisac(cs, ISAC_ADF2, cs->dc.isac.adf2); |
| 636 | cs->writeisac(cs, ISAC_SQXR, 0x2f); |
| 637 | cs->writeisac(cs, ISAC_SPCR, 0x00); |
| 638 | cs->writeisac(cs, ISAC_STCR, 0x70); |
| 639 | cs->writeisac(cs, ISAC_MODE, 0xc9); |
| 640 | cs->writeisac(cs, ISAC_TIMR, 0x00); |
| 641 | cs->writeisac(cs, ISAC_ADF1, 0x00); |
| 642 | } |
| 643 | ph_command(cs, ISAC_CMD_RS); |
| 644 | cs->writeisac(cs, ISAC_MASK, 0x0); |
| 645 | } |
| 646 | |
Sam Ravnborg | d348c2a | 2008-02-09 23:28:12 -0800 | [diff] [blame] | 647 | void clear_pending_isac_ints(struct IsdnCardState *cs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | { |
| 649 | int val, eval; |
| 650 | |
| 651 | val = cs->readisac(cs, ISAC_STAR); |
| 652 | debugl1(cs, "ISAC STAR %x", val); |
| 653 | val = cs->readisac(cs, ISAC_MODE); |
| 654 | debugl1(cs, "ISAC MODE %x", val); |
| 655 | val = cs->readisac(cs, ISAC_ADF2); |
| 656 | debugl1(cs, "ISAC ADF2 %x", val); |
| 657 | val = cs->readisac(cs, ISAC_ISTA); |
| 658 | debugl1(cs, "ISAC ISTA %x", val); |
| 659 | if (val & 0x01) { |
| 660 | eval = cs->readisac(cs, ISAC_EXIR); |
| 661 | debugl1(cs, "ISAC EXIR %x", eval); |
| 662 | } |
| 663 | val = cs->readisac(cs, ISAC_CIR0); |
| 664 | debugl1(cs, "ISAC CIR0 %x", val); |
| 665 | cs->dc.isac.ph_state = (val >> 2) & 0xf; |
| 666 | schedule_event(cs, D_L1STATECHANGE); |
| 667 | /* Disable all IRQ */ |
| 668 | cs->writeisac(cs, ISAC_MASK, 0xFF); |
| 669 | } |
| 670 | |
| 671 | void __devinit |
| 672 | setup_isac(struct IsdnCardState *cs) |
| 673 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 674 | INIT_WORK(&cs->tqueue, isac_bh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | cs->dbusytimer.function = (void *) dbusy_timer_handler; |
| 676 | cs->dbusytimer.data = (long) cs; |
| 677 | init_timer(&cs->dbusytimer); |
| 678 | } |