Karsten Keil | 707b2ce | 2009-07-22 20:06:05 +0200 | [diff] [blame] | 1 | /* |
| 2 | * w6692.c mISDN driver for Winbond w6692 based cards |
| 3 | * |
| 4 | * Author Karsten Keil <kkeil@suse.de> |
| 5 | * based on the w6692 I4L driver from Petr Novak <petr.novak@i.cz> |
| 6 | * |
| 7 | * Copyright 2009 by Karsten Keil <keil@isdn4linux.de> |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 as |
| 11 | * published by the Free Software Foundation. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/pci.h> |
| 26 | #include <linux/delay.h> |
| 27 | #include <linux/mISDNhw.h> |
| 28 | #include "w6692.h" |
| 29 | |
| 30 | #define W6692_REV "2.0" |
| 31 | |
| 32 | #define DBUSY_TIMER_VALUE 80 |
| 33 | |
| 34 | enum { |
| 35 | W6692_ASUS, |
| 36 | W6692_WINBOND, |
| 37 | W6692_USR |
| 38 | }; |
| 39 | |
| 40 | /* private data in the PCI devices list */ |
| 41 | struct w6692map { |
| 42 | u_int subtype; |
| 43 | char *name; |
| 44 | }; |
| 45 | |
| 46 | static const struct w6692map w6692_map[] = |
| 47 | { |
| 48 | {W6692_ASUS, "Dynalink/AsusCom IS64PH"}, |
| 49 | {W6692_WINBOND, "Winbond W6692"}, |
| 50 | {W6692_USR, "USR W6692"} |
| 51 | }; |
| 52 | |
| 53 | #ifndef PCI_VENDOR_ID_USR |
| 54 | #define PCI_VENDOR_ID_USR 0x16ec |
| 55 | #define PCI_DEVICE_ID_USR_6692 0x3409 |
| 56 | #endif |
| 57 | |
| 58 | struct w6692_ch { |
| 59 | struct bchannel bch; |
| 60 | u32 addr; |
| 61 | struct timer_list timer; |
| 62 | u8 b_mode; |
| 63 | }; |
| 64 | |
| 65 | struct w6692_hw { |
| 66 | struct list_head list; |
| 67 | struct pci_dev *pdev; |
| 68 | char name[MISDN_MAX_IDLEN]; |
| 69 | u32 irq; |
| 70 | u32 irqcnt; |
| 71 | u32 addr; |
| 72 | u32 fmask; /* feature mask - bit set per card nr */ |
| 73 | int subtype; |
| 74 | spinlock_t lock; /* hw lock */ |
| 75 | u8 imask; |
| 76 | u8 pctl; |
| 77 | u8 xaddr; |
| 78 | u8 xdata; |
| 79 | u8 state; |
| 80 | struct w6692_ch bc[2]; |
| 81 | struct dchannel dch; |
| 82 | char log[64]; |
| 83 | }; |
| 84 | |
| 85 | static LIST_HEAD(Cards); |
| 86 | static DEFINE_RWLOCK(card_lock); /* protect Cards */ |
| 87 | |
| 88 | static int w6692_cnt; |
| 89 | static int debug; |
| 90 | static u32 led; |
| 91 | static u32 pots; |
| 92 | |
| 93 | static void |
| 94 | _set_debug(struct w6692_hw *card) |
| 95 | { |
| 96 | card->dch.debug = debug; |
| 97 | card->bc[0].bch.debug = debug; |
| 98 | card->bc[1].bch.debug = debug; |
| 99 | } |
| 100 | |
| 101 | static int |
| 102 | set_debug(const char *val, struct kernel_param *kp) |
| 103 | { |
| 104 | int ret; |
| 105 | struct w6692_hw *card; |
| 106 | |
| 107 | ret = param_set_uint(val, kp); |
| 108 | if (!ret) { |
| 109 | read_lock(&card_lock); |
| 110 | list_for_each_entry(card, &Cards, list) |
| 111 | _set_debug(card); |
| 112 | read_unlock(&card_lock); |
| 113 | } |
| 114 | return ret; |
| 115 | } |
| 116 | |
| 117 | MODULE_AUTHOR("Karsten Keil"); |
| 118 | MODULE_LICENSE("GPL v2"); |
| 119 | MODULE_VERSION(W6692_REV); |
| 120 | module_param_call(debug, set_debug, param_get_uint, &debug, S_IRUGO | S_IWUSR); |
| 121 | MODULE_PARM_DESC(debug, "W6692 debug mask"); |
| 122 | module_param(led, uint, S_IRUGO | S_IWUSR); |
| 123 | MODULE_PARM_DESC(led, "W6692 LED support bitmask (one bit per card)"); |
| 124 | module_param(pots, uint, S_IRUGO | S_IWUSR); |
| 125 | MODULE_PARM_DESC(pots, "W6692 POTS support bitmask (one bit per card)"); |
| 126 | |
| 127 | static inline u8 |
| 128 | ReadW6692(struct w6692_hw *card, u8 offset) |
| 129 | { |
| 130 | return inb(card->addr + offset); |
| 131 | } |
| 132 | |
| 133 | static inline void |
| 134 | WriteW6692(struct w6692_hw *card, u8 offset, u8 value) |
| 135 | { |
| 136 | outb(value, card->addr + offset); |
| 137 | } |
| 138 | |
| 139 | static inline u8 |
| 140 | ReadW6692B(struct w6692_ch *bc, u8 offset) |
| 141 | { |
| 142 | return inb(bc->addr + offset); |
| 143 | } |
| 144 | |
| 145 | static inline void |
| 146 | WriteW6692B(struct w6692_ch *bc, u8 offset, u8 value) |
| 147 | { |
| 148 | outb(value, bc->addr + offset); |
| 149 | } |
| 150 | |
| 151 | static void |
| 152 | enable_hwirq(struct w6692_hw *card) |
| 153 | { |
| 154 | WriteW6692(card, W_IMASK, card->imask); |
| 155 | } |
| 156 | |
| 157 | static void |
| 158 | disable_hwirq(struct w6692_hw *card) |
| 159 | { |
| 160 | WriteW6692(card, W_IMASK, 0xff); |
| 161 | } |
| 162 | |
| 163 | static const char *W6692Ver[] = {"V00", "V01", "V10", "V11"}; |
| 164 | |
| 165 | static void |
| 166 | W6692Version(struct w6692_hw *card) |
| 167 | { |
| 168 | int val; |
| 169 | |
| 170 | val = ReadW6692(card, W_D_RBCH); |
| 171 | pr_notice("%s: Winbond W6692 version: %s\n", card->name, |
| 172 | W6692Ver[(val >> 6) & 3]); |
| 173 | } |
| 174 | |
| 175 | static void |
| 176 | w6692_led_handler(struct w6692_hw *card, int on) |
| 177 | { |
| 178 | if ((!(card->fmask & led)) || card->subtype == W6692_USR) |
| 179 | return; |
| 180 | if (on) { |
| 181 | card->xdata &= 0xfb; /* LED ON */ |
| 182 | WriteW6692(card, W_XDATA, card->xdata); |
| 183 | } else { |
| 184 | card->xdata |= 0x04; /* LED OFF */ |
| 185 | WriteW6692(card, W_XDATA, card->xdata); |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | static void |
| 190 | ph_command(struct w6692_hw *card, u8 cmd) |
| 191 | { |
| 192 | pr_debug("%s: ph_command %x\n", card->name, cmd); |
| 193 | WriteW6692(card, W_CIX, cmd); |
| 194 | } |
| 195 | |
| 196 | static void |
| 197 | W6692_new_ph(struct w6692_hw *card) |
| 198 | { |
| 199 | if (card->state == W_L1CMD_RST) |
| 200 | ph_command(card, W_L1CMD_DRC); |
| 201 | schedule_event(&card->dch, FLG_PHCHANGE); |
| 202 | } |
| 203 | |
| 204 | static void |
| 205 | W6692_ph_bh(struct dchannel *dch) |
| 206 | { |
| 207 | struct w6692_hw *card = dch->hw; |
| 208 | |
| 209 | switch (card->state) { |
| 210 | case W_L1CMD_RST: |
| 211 | dch->state = 0; |
| 212 | l1_event(dch->l1, HW_RESET_IND); |
| 213 | break; |
| 214 | case W_L1IND_CD: |
| 215 | dch->state = 3; |
| 216 | l1_event(dch->l1, HW_DEACT_CNF); |
| 217 | break; |
| 218 | case W_L1IND_DRD: |
| 219 | dch->state = 3; |
| 220 | l1_event(dch->l1, HW_DEACT_IND); |
| 221 | break; |
| 222 | case W_L1IND_CE: |
| 223 | dch->state = 4; |
| 224 | l1_event(dch->l1, HW_POWERUP_IND); |
| 225 | break; |
| 226 | case W_L1IND_LD: |
| 227 | if (dch->state <= 5) { |
| 228 | dch->state = 5; |
| 229 | l1_event(dch->l1, ANYSIGNAL); |
| 230 | } else { |
| 231 | dch->state = 8; |
| 232 | l1_event(dch->l1, LOSTFRAMING); |
| 233 | } |
| 234 | break; |
| 235 | case W_L1IND_ARD: |
| 236 | dch->state = 6; |
| 237 | l1_event(dch->l1, INFO2); |
| 238 | break; |
| 239 | case W_L1IND_AI8: |
| 240 | dch->state = 7; |
| 241 | l1_event(dch->l1, INFO4_P8); |
| 242 | break; |
| 243 | case W_L1IND_AI10: |
| 244 | dch->state = 7; |
| 245 | l1_event(dch->l1, INFO4_P10); |
| 246 | break; |
| 247 | default: |
| 248 | pr_debug("%s: TE unknown state %02x dch state %02x\n", |
| 249 | card->name, card->state, dch->state); |
| 250 | break; |
| 251 | } |
| 252 | pr_debug("%s: TE newstate %02x\n", card->name, dch->state); |
| 253 | } |
| 254 | |
| 255 | static void |
| 256 | W6692_empty_Dfifo(struct w6692_hw *card, int count) |
| 257 | { |
| 258 | struct dchannel *dch = &card->dch; |
| 259 | u8 *ptr; |
| 260 | |
| 261 | pr_debug("%s: empty_Dfifo %d\n", card->name, count); |
| 262 | if (!dch->rx_skb) { |
| 263 | dch->rx_skb = mI_alloc_skb(card->dch.maxlen, GFP_ATOMIC); |
| 264 | if (!dch->rx_skb) { |
| 265 | pr_info("%s: D receive out of memory\n", card->name); |
| 266 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK); |
| 267 | return; |
| 268 | } |
| 269 | } |
| 270 | if ((dch->rx_skb->len + count) >= dch->maxlen) { |
| 271 | pr_debug("%s: empty_Dfifo overrun %d\n", card->name, |
| 272 | dch->rx_skb->len + count); |
| 273 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK); |
| 274 | return; |
| 275 | } |
| 276 | ptr = skb_put(dch->rx_skb, count); |
| 277 | insb(card->addr + W_D_RFIFO, ptr, count); |
| 278 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK); |
| 279 | if (debug & DEBUG_HW_DFIFO) { |
| 280 | snprintf(card->log, 63, "D-recv %s %d ", |
| 281 | card->name, count); |
| 282 | print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count); |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | static void |
| 287 | W6692_fill_Dfifo(struct w6692_hw *card) |
| 288 | { |
| 289 | struct dchannel *dch = &card->dch; |
| 290 | int count; |
| 291 | u8 *ptr; |
| 292 | u8 cmd = W_D_CMDR_XMS; |
| 293 | |
| 294 | pr_debug("%s: fill_Dfifo\n", card->name); |
| 295 | if (!dch->tx_skb) |
| 296 | return; |
| 297 | count = dch->tx_skb->len - dch->tx_idx; |
| 298 | if (count <= 0) |
| 299 | return; |
| 300 | if (count > W_D_FIFO_THRESH) |
| 301 | count = W_D_FIFO_THRESH; |
| 302 | else |
| 303 | cmd |= W_D_CMDR_XME; |
| 304 | ptr = dch->tx_skb->data + dch->tx_idx; |
| 305 | dch->tx_idx += count; |
| 306 | outsb(card->addr + W_D_XFIFO, ptr, count); |
| 307 | WriteW6692(card, W_D_CMDR, cmd); |
| 308 | if (test_and_set_bit(FLG_BUSY_TIMER, &dch->Flags)) { |
| 309 | pr_debug("%s: fill_Dfifo dbusytimer running\n", card->name); |
| 310 | del_timer(&dch->timer); |
| 311 | } |
| 312 | init_timer(&dch->timer); |
| 313 | dch->timer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ)/1000); |
| 314 | add_timer(&dch->timer); |
| 315 | if (debug & DEBUG_HW_DFIFO) { |
| 316 | snprintf(card->log, 63, "D-send %s %d ", |
| 317 | card->name, count); |
| 318 | print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count); |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | static void |
| 323 | d_retransmit(struct w6692_hw *card) |
| 324 | { |
| 325 | struct dchannel *dch = &card->dch; |
| 326 | |
| 327 | if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags)) |
| 328 | del_timer(&dch->timer); |
| 329 | #ifdef FIXME |
| 330 | if (test_and_clear_bit(FLG_L1_BUSY, &dch->Flags)) |
| 331 | dchannel_sched_event(dch, D_CLEARBUSY); |
| 332 | #endif |
| 333 | if (test_bit(FLG_TX_BUSY, &dch->Flags)) { |
| 334 | /* Restart frame */ |
| 335 | dch->tx_idx = 0; |
| 336 | W6692_fill_Dfifo(card); |
| 337 | } else if (dch->tx_skb) { /* should not happen */ |
| 338 | pr_info("%s: %s without TX_BUSY\n", card->name, __func__); |
| 339 | test_and_set_bit(FLG_TX_BUSY, &dch->Flags); |
| 340 | dch->tx_idx = 0; |
| 341 | W6692_fill_Dfifo(card); |
| 342 | } else { |
| 343 | pr_info("%s: XDU no TX_BUSY\n", card->name); |
| 344 | if (get_next_dframe(dch)) |
| 345 | W6692_fill_Dfifo(card); |
| 346 | } |
| 347 | } |
| 348 | |
| 349 | static void |
| 350 | handle_rxD(struct w6692_hw *card) { |
| 351 | u8 stat; |
| 352 | int count; |
| 353 | |
| 354 | stat = ReadW6692(card, W_D_RSTA); |
| 355 | if (stat & (W_D_RSTA_RDOV | W_D_RSTA_CRCE | W_D_RSTA_RMB)) { |
| 356 | if (stat & W_D_RSTA_RDOV) { |
| 357 | pr_debug("%s: D-channel RDOV\n", card->name); |
| 358 | #ifdef ERROR_STATISTIC |
| 359 | card->dch.err_rx++; |
| 360 | #endif |
| 361 | } |
| 362 | if (stat & W_D_RSTA_CRCE) { |
| 363 | pr_debug("%s: D-channel CRC error\n", card->name); |
| 364 | #ifdef ERROR_STATISTIC |
| 365 | card->dch.err_crc++; |
| 366 | #endif |
| 367 | } |
| 368 | if (stat & W_D_RSTA_RMB) { |
| 369 | pr_debug("%s: D-channel ABORT\n", card->name); |
| 370 | #ifdef ERROR_STATISTIC |
| 371 | card->dch.err_rx++; |
| 372 | #endif |
| 373 | } |
| 374 | if (card->dch.rx_skb) |
| 375 | dev_kfree_skb(card->dch.rx_skb); |
| 376 | card->dch.rx_skb = NULL; |
| 377 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK | W_D_CMDR_RRST); |
| 378 | } else { |
| 379 | count = ReadW6692(card, W_D_RBCL) & (W_D_FIFO_THRESH - 1); |
| 380 | if (count == 0) |
| 381 | count = W_D_FIFO_THRESH; |
| 382 | W6692_empty_Dfifo(card, count); |
| 383 | recv_Dchannel(&card->dch); |
| 384 | } |
| 385 | } |
| 386 | |
| 387 | static void |
| 388 | handle_txD(struct w6692_hw *card) { |
| 389 | if (test_and_clear_bit(FLG_BUSY_TIMER, &card->dch.Flags)) |
| 390 | del_timer(&card->dch.timer); |
| 391 | if (card->dch.tx_skb && card->dch.tx_idx < card->dch.tx_skb->len) { |
| 392 | W6692_fill_Dfifo(card); |
| 393 | } else { |
| 394 | if (card->dch.tx_skb) |
| 395 | dev_kfree_skb(card->dch.tx_skb); |
| 396 | if (get_next_dframe(&card->dch)) |
| 397 | W6692_fill_Dfifo(card); |
| 398 | } |
| 399 | } |
| 400 | |
| 401 | static void |
| 402 | handle_statusD(struct w6692_hw *card) |
| 403 | { |
| 404 | struct dchannel *dch = &card->dch; |
| 405 | u8 exval, v1, cir; |
| 406 | |
| 407 | exval = ReadW6692(card, W_D_EXIR); |
| 408 | |
| 409 | pr_debug("%s: D_EXIR %02x\n", card->name, exval); |
| 410 | if (exval & (W_D_EXI_XDUN | W_D_EXI_XCOL)) { |
| 411 | /* Transmit underrun/collision */ |
| 412 | pr_debug("%s: D-channel underrun/collision\n", card->name); |
| 413 | #ifdef ERROR_STATISTIC |
| 414 | dch->err_tx++; |
| 415 | #endif |
| 416 | d_retransmit(card); |
| 417 | } |
| 418 | if (exval & W_D_EXI_RDOV) { /* RDOV */ |
| 419 | pr_debug("%s: D-channel RDOV\n", card->name); |
| 420 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST); |
| 421 | } |
| 422 | if (exval & W_D_EXI_TIN2) /* TIN2 - never */ |
| 423 | pr_debug("%s: spurious TIN2 interrupt\n", card->name); |
| 424 | if (exval & W_D_EXI_MOC) { /* MOC - not supported */ |
| 425 | v1 = ReadW6692(card, W_MOSR); |
| 426 | pr_debug("%s: spurious MOC interrupt MOSR %02x\n", |
| 427 | card->name, v1); |
| 428 | } |
| 429 | if (exval & W_D_EXI_ISC) { /* ISC - Level1 change */ |
| 430 | cir = ReadW6692(card, W_CIR); |
| 431 | pr_debug("%s: ISC CIR %02X\n", card->name, cir); |
| 432 | if (cir & W_CIR_ICC) { |
| 433 | v1 = cir & W_CIR_COD_MASK; |
| 434 | pr_debug("%s: ph_state_change %x -> %x\n", card->name, |
| 435 | dch->state, v1); |
| 436 | card->state = v1; |
| 437 | if (card->fmask & led) { |
| 438 | switch (v1) { |
| 439 | case W_L1IND_AI8: |
| 440 | case W_L1IND_AI10: |
| 441 | w6692_led_handler(card, 1); |
| 442 | break; |
| 443 | default: |
| 444 | w6692_led_handler(card, 0); |
| 445 | break; |
| 446 | } |
| 447 | } |
| 448 | W6692_new_ph(card); |
| 449 | } |
| 450 | if (cir & W_CIR_SCC) { |
| 451 | v1 = ReadW6692(card, W_SQR); |
| 452 | pr_debug("%s: SCC SQR %02X\n", card->name, v1); |
| 453 | } |
| 454 | } |
| 455 | if (exval & W_D_EXI_WEXP) |
| 456 | pr_debug("%s: spurious WEXP interrupt!\n", card->name); |
| 457 | if (exval & W_D_EXI_TEXP) |
| 458 | pr_debug("%s: spurious TEXP interrupt!\n", card->name); |
| 459 | } |
| 460 | |
| 461 | static void |
| 462 | W6692_empty_Bfifo(struct w6692_ch *wch, int count) |
| 463 | { |
| 464 | struct w6692_hw *card = wch->bch.hw; |
| 465 | u8 *ptr; |
| 466 | |
| 467 | pr_debug("%s: empty_Bfifo %d\n", card->name, count); |
| 468 | if (unlikely(wch->bch.state == ISDN_P_NONE)) { |
| 469 | pr_debug("%s: empty_Bfifo ISDN_P_NONE\n", card->name); |
| 470 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT); |
| 471 | if (wch->bch.rx_skb) |
| 472 | skb_trim(wch->bch.rx_skb, 0); |
| 473 | return; |
| 474 | } |
| 475 | if (!wch->bch.rx_skb) { |
| 476 | wch->bch.rx_skb = mI_alloc_skb(wch->bch.maxlen, GFP_ATOMIC); |
| 477 | if (unlikely(!wch->bch.rx_skb)) { |
| 478 | pr_info("%s: B receive out of memory\n", card->name); |
| 479 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | |
| 480 | W_B_CMDR_RACT); |
| 481 | return; |
| 482 | } |
| 483 | } |
| 484 | if (wch->bch.rx_skb->len + count > wch->bch.maxlen) { |
| 485 | pr_debug("%s: empty_Bfifo incoming packet too large\n", |
| 486 | card->name); |
| 487 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT); |
| 488 | skb_trim(wch->bch.rx_skb, 0); |
| 489 | return; |
| 490 | } |
| 491 | ptr = skb_put(wch->bch.rx_skb, count); |
| 492 | insb(wch->addr + W_B_RFIFO, ptr, count); |
| 493 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT); |
| 494 | if (debug & DEBUG_HW_DFIFO) { |
| 495 | snprintf(card->log, 63, "B%1d-recv %s %d ", |
| 496 | wch->bch.nr, card->name, count); |
| 497 | print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count); |
| 498 | } |
| 499 | } |
| 500 | |
| 501 | static void |
| 502 | W6692_fill_Bfifo(struct w6692_ch *wch) |
| 503 | { |
| 504 | struct w6692_hw *card = wch->bch.hw; |
| 505 | int count; |
| 506 | u8 *ptr, cmd = W_B_CMDR_RACT | W_B_CMDR_XMS; |
| 507 | |
| 508 | pr_debug("%s: fill Bfifo\n", card->name); |
| 509 | if (!wch->bch.tx_skb) |
| 510 | return; |
| 511 | count = wch->bch.tx_skb->len - wch->bch.tx_idx; |
| 512 | if (count <= 0) |
| 513 | return; |
| 514 | ptr = wch->bch.tx_skb->data + wch->bch.tx_idx; |
| 515 | if (count > W_B_FIFO_THRESH) |
| 516 | count = W_B_FIFO_THRESH; |
| 517 | else if (test_bit(FLG_HDLC, &wch->bch.Flags)) |
| 518 | cmd |= W_B_CMDR_XME; |
| 519 | |
| 520 | pr_debug("%s: fill Bfifo%d/%d\n", card->name, |
| 521 | count, wch->bch.tx_idx); |
| 522 | wch->bch.tx_idx += count; |
| 523 | outsb(wch->addr + W_B_XFIFO, ptr, count); |
| 524 | WriteW6692B(wch, W_B_CMDR, cmd); |
| 525 | if (debug & DEBUG_HW_DFIFO) { |
| 526 | snprintf(card->log, 63, "B%1d-send %s %d ", |
| 527 | wch->bch.nr, card->name, count); |
| 528 | print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count); |
| 529 | } |
| 530 | } |
| 531 | |
| 532 | static int |
| 533 | setvolume(struct w6692_ch *wch, int mic, struct sk_buff *skb) |
| 534 | { |
| 535 | struct w6692_hw *card = wch->bch.hw; |
| 536 | u16 *vol = (u16 *)skb->data; |
| 537 | u8 val; |
| 538 | |
| 539 | if ((!(card->fmask & pots)) || |
| 540 | !test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) |
| 541 | return -ENODEV; |
| 542 | if (skb->len < 2) |
| 543 | return -EINVAL; |
| 544 | if (*vol > 7) |
| 545 | return -EINVAL; |
| 546 | val = *vol & 7; |
| 547 | val = 7 - val; |
| 548 | if (mic) { |
| 549 | val <<= 3; |
| 550 | card->xaddr &= 0xc7; |
| 551 | } else { |
| 552 | card->xaddr &= 0xf8; |
| 553 | } |
| 554 | card->xaddr |= val; |
| 555 | WriteW6692(card, W_XADDR, card->xaddr); |
| 556 | return 0; |
| 557 | } |
| 558 | |
| 559 | static int |
| 560 | enable_pots(struct w6692_ch *wch) |
| 561 | { |
| 562 | struct w6692_hw *card = wch->bch.hw; |
| 563 | |
| 564 | if ((!(card->fmask & pots)) || |
| 565 | !test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) |
| 566 | return -ENODEV; |
| 567 | wch->b_mode |= W_B_MODE_EPCM | W_B_MODE_BSW0; |
| 568 | WriteW6692B(wch, W_B_MODE, wch->b_mode); |
| 569 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST); |
| 570 | card->pctl |= ((wch->bch.nr & 2) ? W_PCTL_PCX : 0); |
| 571 | WriteW6692(card, W_PCTL, card->pctl); |
| 572 | return 0; |
| 573 | } |
| 574 | |
| 575 | static int |
| 576 | disable_pots(struct w6692_ch *wch) |
| 577 | { |
| 578 | struct w6692_hw *card = wch->bch.hw; |
| 579 | |
| 580 | if (!(card->fmask & pots)) |
| 581 | return -ENODEV; |
| 582 | wch->b_mode &= ~(W_B_MODE_EPCM | W_B_MODE_BSW0); |
| 583 | WriteW6692B(wch, W_B_MODE, wch->b_mode); |
| 584 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT | |
| 585 | W_B_CMDR_XRST); |
| 586 | return 0; |
| 587 | } |
| 588 | |
| 589 | static int |
| 590 | w6692_mode(struct w6692_ch *wch, u32 pr) |
| 591 | { |
| 592 | struct w6692_hw *card; |
| 593 | |
| 594 | card = wch->bch.hw; |
| 595 | pr_debug("%s: B%d protocol %x-->%x\n", card->name, |
| 596 | wch->bch.nr, wch->bch.state, pr); |
| 597 | switch (pr) { |
| 598 | case ISDN_P_NONE: |
| 599 | if ((card->fmask & pots) && (wch->b_mode & W_B_MODE_EPCM)) |
| 600 | disable_pots(wch); |
| 601 | wch->b_mode = 0; |
| 602 | mISDN_clear_bchannel(&wch->bch); |
| 603 | WriteW6692B(wch, W_B_MODE, wch->b_mode); |
| 604 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST); |
| 605 | test_and_clear_bit(FLG_HDLC, &wch->bch.Flags); |
| 606 | test_and_clear_bit(FLG_TRANSPARENT, &wch->bch.Flags); |
| 607 | break; |
| 608 | case ISDN_P_B_RAW: |
| 609 | wch->b_mode = W_B_MODE_MMS; |
| 610 | WriteW6692B(wch, W_B_MODE, wch->b_mode); |
| 611 | WriteW6692B(wch, W_B_EXIM, 0); |
| 612 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT | |
| 613 | W_B_CMDR_XRST); |
| 614 | test_and_set_bit(FLG_TRANSPARENT, &wch->bch.Flags); |
| 615 | break; |
| 616 | case ISDN_P_B_HDLC: |
| 617 | wch->b_mode = W_B_MODE_ITF; |
| 618 | WriteW6692B(wch, W_B_MODE, wch->b_mode); |
| 619 | WriteW6692B(wch, W_B_ADM1, 0xff); |
| 620 | WriteW6692B(wch, W_B_ADM2, 0xff); |
| 621 | WriteW6692B(wch, W_B_EXIM, 0); |
| 622 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT | |
| 623 | W_B_CMDR_XRST); |
| 624 | test_and_set_bit(FLG_HDLC, &wch->bch.Flags); |
| 625 | break; |
| 626 | default: |
| 627 | pr_info("%s: protocol %x not known\n", card->name, pr); |
| 628 | return -ENOPROTOOPT; |
| 629 | } |
| 630 | wch->bch.state = pr; |
| 631 | return 0; |
| 632 | } |
| 633 | |
| 634 | static void |
| 635 | send_next(struct w6692_ch *wch) |
| 636 | { |
| 637 | if (wch->bch.tx_skb && wch->bch.tx_idx < wch->bch.tx_skb->len) |
| 638 | W6692_fill_Bfifo(wch); |
| 639 | else { |
| 640 | if (wch->bch.tx_skb) { |
| 641 | /* send confirm, on trans, free on hdlc. */ |
| 642 | if (test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) |
| 643 | confirm_Bsend(&wch->bch); |
| 644 | dev_kfree_skb(wch->bch.tx_skb); |
| 645 | } |
| 646 | if (get_next_bframe(&wch->bch)) |
| 647 | W6692_fill_Bfifo(wch); |
| 648 | } |
| 649 | } |
| 650 | |
| 651 | static void |
| 652 | W6692B_interrupt(struct w6692_hw *card, int ch) |
| 653 | { |
| 654 | struct w6692_ch *wch = &card->bc[ch]; |
| 655 | int count; |
| 656 | u8 stat, star = 0; |
| 657 | |
| 658 | stat = ReadW6692B(wch, W_B_EXIR); |
| 659 | pr_debug("%s: B%d EXIR %02x\n", card->name, wch->bch.nr, stat); |
| 660 | if (stat & W_B_EXI_RME) { |
| 661 | star = ReadW6692B(wch, W_B_STAR); |
| 662 | if (star & (W_B_STAR_RDOV | W_B_STAR_CRCE | W_B_STAR_RMB)) { |
| 663 | if ((star & W_B_STAR_RDOV) && |
| 664 | test_bit(FLG_ACTIVE, &wch->bch.Flags)) { |
| 665 | pr_debug("%s: B%d RDOV proto=%x\n", card->name, |
| 666 | wch->bch.nr, wch->bch.state); |
| 667 | #ifdef ERROR_STATISTIC |
| 668 | wch->bch.err_rdo++; |
| 669 | #endif |
| 670 | } |
| 671 | if (test_bit(FLG_HDLC, &wch->bch.Flags)) { |
| 672 | if (star & W_B_STAR_CRCE) { |
| 673 | pr_debug("%s: B%d CRC error\n", |
| 674 | card->name, wch->bch.nr); |
| 675 | #ifdef ERROR_STATISTIC |
| 676 | wch->bch.err_crc++; |
| 677 | #endif |
| 678 | } |
| 679 | if (star & W_B_STAR_RMB) { |
| 680 | pr_debug("%s: B%d message abort\n", |
| 681 | card->name, wch->bch.nr); |
| 682 | #ifdef ERROR_STATISTIC |
| 683 | wch->bch.err_inv++; |
| 684 | #endif |
| 685 | } |
| 686 | } |
| 687 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | |
| 688 | W_B_CMDR_RRST | W_B_CMDR_RACT); |
| 689 | if (wch->bch.rx_skb) |
| 690 | skb_trim(wch->bch.rx_skb, 0); |
| 691 | } else { |
| 692 | count = ReadW6692B(wch, W_B_RBCL) & |
| 693 | (W_B_FIFO_THRESH - 1); |
| 694 | if (count == 0) |
| 695 | count = W_B_FIFO_THRESH; |
| 696 | W6692_empty_Bfifo(wch, count); |
| 697 | recv_Bchannel(&wch->bch, 0); |
| 698 | } |
| 699 | } |
| 700 | if (stat & W_B_EXI_RMR) { |
| 701 | if (!(stat & W_B_EXI_RME)) |
| 702 | star = ReadW6692B(wch, W_B_STAR); |
| 703 | if (star & W_B_STAR_RDOV) { |
| 704 | pr_debug("%s: B%d RDOV proto=%x\n", card->name, |
| 705 | wch->bch.nr, wch->bch.state); |
| 706 | #ifdef ERROR_STATISTIC |
| 707 | wch->bch.err_rdo++; |
| 708 | #endif |
| 709 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | |
| 710 | W_B_CMDR_RRST | W_B_CMDR_RACT); |
| 711 | } else { |
| 712 | W6692_empty_Bfifo(wch, W_B_FIFO_THRESH); |
| 713 | if (test_bit(FLG_TRANSPARENT, &wch->bch.Flags) && |
| 714 | wch->bch.rx_skb && (wch->bch.rx_skb->len > 0)) |
| 715 | recv_Bchannel(&wch->bch, 0); |
| 716 | } |
| 717 | } |
| 718 | if (stat & W_B_EXI_RDOV) { |
| 719 | /* only if it is not handled yet */ |
| 720 | if (!(star & W_B_STAR_RDOV)) { |
| 721 | pr_debug("%s: B%d RDOV IRQ proto=%x\n", card->name, |
| 722 | wch->bch.nr, wch->bch.state); |
| 723 | #ifdef ERROR_STATISTIC |
| 724 | wch->bch.err_rdo++; |
| 725 | #endif |
| 726 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | |
| 727 | W_B_CMDR_RRST | W_B_CMDR_RACT); |
| 728 | } |
| 729 | } |
| 730 | if (stat & W_B_EXI_XFR) { |
| 731 | if (!(stat & (W_B_EXI_RME | W_B_EXI_RMR))) { |
| 732 | star = ReadW6692B(wch, W_B_STAR); |
| 733 | pr_debug("%s: B%d star %02x\n", card->name, |
| 734 | wch->bch.nr, star); |
| 735 | } |
| 736 | if (star & W_B_STAR_XDOW) { |
| 737 | pr_debug("%s: B%d XDOW proto=%x\n", card->name, |
| 738 | wch->bch.nr, wch->bch.state); |
| 739 | #ifdef ERROR_STATISTIC |
| 740 | wch->bch.err_xdu++; |
| 741 | #endif |
| 742 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_XRST | |
| 743 | W_B_CMDR_RACT); |
| 744 | /* resend */ |
| 745 | if (wch->bch.tx_skb) { |
| 746 | if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) |
| 747 | wch->bch.tx_idx = 0; |
| 748 | } |
| 749 | } |
| 750 | send_next(wch); |
| 751 | if (stat & W_B_EXI_XDUN) |
| 752 | return; /* handle XDOW only once */ |
| 753 | } |
| 754 | if (stat & W_B_EXI_XDUN) { |
| 755 | pr_debug("%s: B%d XDUN proto=%x\n", card->name, |
| 756 | wch->bch.nr, wch->bch.state); |
| 757 | #ifdef ERROR_STATISTIC |
| 758 | wch->bch.err_xdu++; |
| 759 | #endif |
| 760 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_XRST | W_B_CMDR_RACT); |
| 761 | /* resend */ |
| 762 | if (wch->bch.tx_skb) { |
| 763 | if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) |
| 764 | wch->bch.tx_idx = 0; |
| 765 | } |
| 766 | send_next(wch); |
| 767 | } |
| 768 | } |
| 769 | |
| 770 | static irqreturn_t |
| 771 | w6692_irq(int intno, void *dev_id) |
| 772 | { |
| 773 | struct w6692_hw *card = dev_id; |
| 774 | u8 ista; |
| 775 | |
| 776 | spin_lock(&card->lock); |
| 777 | ista = ReadW6692(card, W_ISTA); |
| 778 | if ((ista | card->imask) == card->imask) { |
| 779 | /* possible a shared IRQ reqest */ |
| 780 | spin_unlock(&card->lock); |
| 781 | return IRQ_NONE; |
| 782 | } |
| 783 | card->irqcnt++; |
| 784 | pr_debug("%s: ista %02x\n", card->name, ista); |
| 785 | ista &= ~card->imask; |
| 786 | if (ista & W_INT_B1_EXI) |
| 787 | W6692B_interrupt(card, 0); |
| 788 | if (ista & W_INT_B2_EXI) |
| 789 | W6692B_interrupt(card, 1); |
| 790 | if (ista & W_INT_D_RME) |
| 791 | handle_rxD(card); |
| 792 | if (ista & W_INT_D_RMR) |
| 793 | W6692_empty_Dfifo(card, W_D_FIFO_THRESH); |
| 794 | if (ista & W_INT_D_XFR) |
| 795 | handle_txD(card); |
| 796 | if (ista & W_INT_D_EXI) |
| 797 | handle_statusD(card); |
| 798 | if (ista & (W_INT_XINT0 | W_INT_XINT1)) /* XINT0/1 - never */ |
| 799 | pr_debug("%s: W6692 spurious XINT!\n", card->name); |
| 800 | /* End IRQ Handler */ |
| 801 | spin_unlock(&card->lock); |
| 802 | return IRQ_HANDLED; |
| 803 | } |
| 804 | |
| 805 | static void |
| 806 | dbusy_timer_handler(struct dchannel *dch) |
| 807 | { |
| 808 | struct w6692_hw *card = dch->hw; |
| 809 | int rbch, star; |
| 810 | u_long flags; |
| 811 | |
| 812 | if (test_bit(FLG_BUSY_TIMER, &dch->Flags)) { |
| 813 | spin_lock_irqsave(&card->lock, flags); |
| 814 | rbch = ReadW6692(card, W_D_RBCH); |
| 815 | star = ReadW6692(card, W_D_STAR); |
| 816 | pr_debug("%s: D-Channel Busy RBCH %02x STAR %02x\n", |
| 817 | card->name, rbch, star); |
| 818 | if (star & W_D_STAR_XBZ) /* D-Channel Busy */ |
| 819 | test_and_set_bit(FLG_L1_BUSY, &dch->Flags); |
| 820 | else { |
| 821 | /* discard frame; reset transceiver */ |
| 822 | test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags); |
| 823 | if (dch->tx_idx) |
| 824 | dch->tx_idx = 0; |
| 825 | else |
| 826 | pr_info("%s: W6692 D-Channel Busy no tx_idx\n", |
| 827 | card->name); |
| 828 | /* Transmitter reset */ |
| 829 | WriteW6692(card, W_D_CMDR, W_D_CMDR_XRST); |
| 830 | } |
| 831 | spin_unlock_irqrestore(&card->lock, flags); |
| 832 | } |
| 833 | } |
| 834 | |
| 835 | void initW6692(struct w6692_hw *card) |
| 836 | { |
| 837 | u8 val; |
| 838 | |
| 839 | card->dch.timer.function = (void *)dbusy_timer_handler; |
| 840 | card->dch.timer.data = (u_long)&card->dch; |
| 841 | init_timer(&card->dch.timer); |
| 842 | w6692_mode(&card->bc[0], ISDN_P_NONE); |
| 843 | w6692_mode(&card->bc[1], ISDN_P_NONE); |
| 844 | WriteW6692(card, W_D_CTL, 0x00); |
| 845 | disable_hwirq(card); |
| 846 | WriteW6692(card, W_D_SAM, 0xff); |
| 847 | WriteW6692(card, W_D_TAM, 0xff); |
| 848 | WriteW6692(card, W_D_MODE, W_D_MODE_RACT); |
| 849 | card->state = W_L1CMD_RST; |
| 850 | ph_command(card, W_L1CMD_RST); |
| 851 | ph_command(card, W_L1CMD_ECK); |
| 852 | /* enable all IRQ but extern */ |
| 853 | card->imask = 0x18; |
| 854 | WriteW6692(card, W_D_EXIM, 0x00); |
| 855 | WriteW6692B(&card->bc[0], W_B_EXIM, 0); |
| 856 | WriteW6692B(&card->bc[1], W_B_EXIM, 0); |
| 857 | /* Reset D-chan receiver and transmitter */ |
| 858 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST | W_D_CMDR_XRST); |
| 859 | /* Reset B-chan receiver and transmitter */ |
| 860 | WriteW6692B(&card->bc[0], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST); |
| 861 | WriteW6692B(&card->bc[1], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST); |
| 862 | /* enable peripheral */ |
| 863 | if (card->subtype == W6692_USR) { |
| 864 | /* seems that USR implemented some power control features |
| 865 | * Pin 79 is connected to the oscilator circuit so we |
| 866 | * have to handle it here |
| 867 | */ |
| 868 | card->pctl = 0x80; |
| 869 | card->xdata = 0; |
| 870 | WriteW6692(card, W_PCTL, card->pctl); |
| 871 | WriteW6692(card, W_XDATA, card->xdata); |
| 872 | } else { |
| 873 | card->pctl = W_PCTL_OE5 | W_PCTL_OE4 | W_PCTL_OE2 | |
| 874 | W_PCTL_OE1 | W_PCTL_OE0; |
| 875 | card->xaddr = 0x00;/* all sw off */ |
| 876 | if (card->fmask & pots) |
| 877 | card->xdata |= 0x06; /* POWER UP/ LED OFF / ALAW */ |
| 878 | if (card->fmask & led) |
| 879 | card->xdata |= 0x04; /* LED OFF */ |
| 880 | if ((card->fmask & pots) || (card->fmask & led)) { |
| 881 | WriteW6692(card, W_PCTL, card->pctl); |
| 882 | WriteW6692(card, W_XADDR, card->xaddr); |
| 883 | WriteW6692(card, W_XDATA, card->xdata); |
| 884 | val = ReadW6692(card, W_XADDR); |
| 885 | if (debug & DEBUG_HW) |
| 886 | pr_notice("%s: W_XADDR=%02x\n", |
| 887 | card->name, val); |
| 888 | } |
| 889 | } |
| 890 | } |
| 891 | |
| 892 | static void |
| 893 | reset_w6692(struct w6692_hw *card) |
| 894 | { |
| 895 | WriteW6692(card, W_D_CTL, W_D_CTL_SRST); |
| 896 | mdelay(10); |
| 897 | WriteW6692(card, W_D_CTL, 0); |
| 898 | } |
| 899 | |
| 900 | static int |
| 901 | init_card(struct w6692_hw *card) |
| 902 | { |
| 903 | int cnt = 3; |
| 904 | u_long flags; |
| 905 | |
| 906 | spin_lock_irqsave(&card->lock, flags); |
| 907 | disable_hwirq(card); |
| 908 | spin_unlock_irqrestore(&card->lock, flags); |
| 909 | if (request_irq(card->irq, w6692_irq, IRQF_SHARED, card->name, card)) { |
| 910 | pr_info("%s: couldn't get interrupt %d\n", card->name, |
| 911 | card->irq); |
| 912 | return -EIO; |
| 913 | } |
| 914 | while (cnt--) { |
| 915 | spin_lock_irqsave(&card->lock, flags); |
| 916 | initW6692(card); |
| 917 | enable_hwirq(card); |
| 918 | spin_unlock_irqrestore(&card->lock, flags); |
| 919 | /* Timeout 10ms */ |
| 920 | msleep_interruptible(10); |
| 921 | if (debug & DEBUG_HW) |
| 922 | pr_notice("%s: IRQ %d count %d\n", card->name, |
| 923 | card->irq, card->irqcnt); |
| 924 | if (!card->irqcnt) { |
| 925 | pr_info("%s: IRQ(%d) getting no IRQs during init %d\n", |
| 926 | card->name, card->irq, 3 - cnt); |
| 927 | reset_w6692(card); |
| 928 | } else |
| 929 | return 0; |
| 930 | } |
| 931 | free_irq(card->irq, card); |
| 932 | return -EIO; |
| 933 | } |
| 934 | |
| 935 | static int |
| 936 | w6692_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb) |
| 937 | { |
| 938 | struct bchannel *bch = container_of(ch, struct bchannel, ch); |
| 939 | struct w6692_ch *bc = container_of(bch, struct w6692_ch, bch); |
| 940 | struct w6692_hw *card = bch->hw; |
| 941 | int ret = -EINVAL; |
| 942 | struct mISDNhead *hh = mISDN_HEAD_P(skb); |
| 943 | u32 id; |
| 944 | u_long flags; |
| 945 | |
| 946 | switch (hh->prim) { |
| 947 | case PH_DATA_REQ: |
| 948 | spin_lock_irqsave(&card->lock, flags); |
| 949 | ret = bchannel_senddata(bch, skb); |
| 950 | if (ret > 0) { /* direct TX */ |
| 951 | id = hh->id; /* skb can be freed */ |
| 952 | ret = 0; |
| 953 | W6692_fill_Bfifo(bc); |
| 954 | spin_unlock_irqrestore(&card->lock, flags); |
| 955 | if (!test_bit(FLG_TRANSPARENT, &bch->Flags)) |
| 956 | queue_ch_frame(ch, PH_DATA_CNF, id, NULL); |
| 957 | } else |
| 958 | spin_unlock_irqrestore(&card->lock, flags); |
| 959 | return ret; |
| 960 | case PH_ACTIVATE_REQ: |
| 961 | spin_lock_irqsave(&card->lock, flags); |
| 962 | if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags)) |
| 963 | ret = w6692_mode(bc, ch->protocol); |
| 964 | else |
| 965 | ret = 0; |
| 966 | spin_unlock_irqrestore(&card->lock, flags); |
| 967 | if (!ret) |
| 968 | _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0, |
| 969 | NULL, GFP_KERNEL); |
| 970 | break; |
| 971 | case PH_DEACTIVATE_REQ: |
| 972 | spin_lock_irqsave(&card->lock, flags); |
| 973 | mISDN_clear_bchannel(bch); |
| 974 | w6692_mode(bc, ISDN_P_NONE); |
| 975 | spin_unlock_irqrestore(&card->lock, flags); |
| 976 | _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0, |
| 977 | NULL, GFP_KERNEL); |
| 978 | ret = 0; |
| 979 | break; |
| 980 | default: |
| 981 | pr_info("%s: %s unknown prim(%x,%x)\n", |
| 982 | card->name, __func__, hh->prim, hh->id); |
| 983 | ret = -EINVAL; |
| 984 | } |
| 985 | if (!ret) |
| 986 | dev_kfree_skb(skb); |
| 987 | return ret; |
| 988 | } |
| 989 | |
| 990 | static int |
| 991 | channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq) |
| 992 | { |
| 993 | int ret = 0; |
| 994 | |
| 995 | switch (cq->op) { |
| 996 | case MISDN_CTRL_GETOP: |
| 997 | cq->op = 0; |
| 998 | break; |
| 999 | /* Nothing implemented yet */ |
| 1000 | case MISDN_CTRL_FILL_EMPTY: |
| 1001 | default: |
| 1002 | pr_info("%s: unknown Op %x\n", __func__, cq->op); |
| 1003 | ret = -EINVAL; |
| 1004 | break; |
| 1005 | } |
| 1006 | return ret; |
| 1007 | } |
| 1008 | |
| 1009 | static int |
| 1010 | open_bchannel(struct w6692_hw *card, struct channel_req *rq) |
| 1011 | { |
| 1012 | struct bchannel *bch; |
| 1013 | |
| 1014 | if (rq->adr.channel > 2) |
| 1015 | return -EINVAL; |
| 1016 | if (rq->protocol == ISDN_P_NONE) |
| 1017 | return -EINVAL; |
| 1018 | bch = &card->bc[rq->adr.channel - 1].bch; |
| 1019 | if (test_and_set_bit(FLG_OPEN, &bch->Flags)) |
| 1020 | return -EBUSY; /* b-channel can be only open once */ |
| 1021 | test_and_clear_bit(FLG_FILLEMPTY, &bch->Flags); |
| 1022 | bch->ch.protocol = rq->protocol; |
| 1023 | rq->ch = &bch->ch; |
| 1024 | return 0; |
| 1025 | } |
| 1026 | |
| 1027 | static int |
| 1028 | channel_ctrl(struct w6692_hw *card, struct mISDN_ctrl_req *cq) |
| 1029 | { |
| 1030 | int ret = 0; |
| 1031 | |
| 1032 | switch (cq->op) { |
| 1033 | case MISDN_CTRL_GETOP: |
| 1034 | cq->op = 0; |
| 1035 | break; |
| 1036 | default: |
| 1037 | pr_info("%s: unknown CTRL OP %x\n", card->name, cq->op); |
| 1038 | ret = -EINVAL; |
| 1039 | break; |
| 1040 | } |
| 1041 | return ret; |
| 1042 | } |
| 1043 | |
| 1044 | static int |
| 1045 | w6692_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg) |
| 1046 | { |
| 1047 | struct bchannel *bch = container_of(ch, struct bchannel, ch); |
| 1048 | struct w6692_ch *bc = container_of(bch, struct w6692_ch, bch); |
| 1049 | struct w6692_hw *card = bch->hw; |
| 1050 | int ret = -EINVAL; |
| 1051 | u_long flags; |
| 1052 | |
| 1053 | pr_debug("%s: %s cmd:%x %p\n", card->name, __func__, cmd, arg); |
| 1054 | switch (cmd) { |
| 1055 | case CLOSE_CHANNEL: |
| 1056 | test_and_clear_bit(FLG_OPEN, &bch->Flags); |
| 1057 | if (test_bit(FLG_ACTIVE, &bch->Flags)) { |
| 1058 | spin_lock_irqsave(&card->lock, flags); |
| 1059 | mISDN_freebchannel(bch); |
| 1060 | w6692_mode(bc, ISDN_P_NONE); |
| 1061 | spin_unlock_irqrestore(&card->lock, flags); |
| 1062 | } else { |
| 1063 | skb_queue_purge(&bch->rqueue); |
| 1064 | bch->rcount = 0; |
| 1065 | } |
| 1066 | ch->protocol = ISDN_P_NONE; |
| 1067 | ch->peer = NULL; |
| 1068 | module_put(THIS_MODULE); |
| 1069 | ret = 0; |
| 1070 | break; |
| 1071 | case CONTROL_CHANNEL: |
| 1072 | ret = channel_bctrl(bch, arg); |
| 1073 | break; |
| 1074 | default: |
| 1075 | pr_info("%s: %s unknown prim(%x)\n", |
| 1076 | card->name, __func__, cmd); |
| 1077 | } |
| 1078 | return ret; |
| 1079 | } |
| 1080 | |
| 1081 | static int |
| 1082 | w6692_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb) |
| 1083 | { |
| 1084 | struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D); |
| 1085 | struct dchannel *dch = container_of(dev, struct dchannel, dev); |
| 1086 | struct w6692_hw *card = container_of(dch, struct w6692_hw, dch); |
| 1087 | int ret = -EINVAL; |
| 1088 | struct mISDNhead *hh = mISDN_HEAD_P(skb); |
| 1089 | u32 id; |
| 1090 | u_long flags; |
| 1091 | |
| 1092 | switch (hh->prim) { |
| 1093 | case PH_DATA_REQ: |
| 1094 | spin_lock_irqsave(&card->lock, flags); |
| 1095 | ret = dchannel_senddata(dch, skb); |
| 1096 | if (ret > 0) { /* direct TX */ |
| 1097 | id = hh->id; /* skb can be freed */ |
| 1098 | W6692_fill_Dfifo(card); |
| 1099 | ret = 0; |
| 1100 | spin_unlock_irqrestore(&card->lock, flags); |
| 1101 | queue_ch_frame(ch, PH_DATA_CNF, id, NULL); |
| 1102 | } else |
| 1103 | spin_unlock_irqrestore(&card->lock, flags); |
| 1104 | return ret; |
| 1105 | case PH_ACTIVATE_REQ: |
| 1106 | ret = l1_event(dch->l1, hh->prim); |
| 1107 | break; |
| 1108 | case PH_DEACTIVATE_REQ: |
| 1109 | test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags); |
| 1110 | ret = l1_event(dch->l1, hh->prim); |
| 1111 | break; |
| 1112 | } |
| 1113 | |
| 1114 | if (!ret) |
| 1115 | dev_kfree_skb(skb); |
| 1116 | return ret; |
| 1117 | } |
| 1118 | |
| 1119 | static int |
| 1120 | w6692_l1callback(struct dchannel *dch, u32 cmd) |
| 1121 | { |
| 1122 | struct w6692_hw *card = container_of(dch, struct w6692_hw, dch); |
| 1123 | u_long flags; |
| 1124 | |
| 1125 | pr_debug("%s: cmd(%x) state(%02x)\n", card->name, cmd, card->state); |
| 1126 | switch (cmd) { |
| 1127 | case INFO3_P8: |
| 1128 | spin_lock_irqsave(&card->lock, flags); |
| 1129 | ph_command(card, W_L1CMD_AR8); |
| 1130 | spin_unlock_irqrestore(&card->lock, flags); |
| 1131 | break; |
| 1132 | case INFO3_P10: |
| 1133 | spin_lock_irqsave(&card->lock, flags); |
| 1134 | ph_command(card, W_L1CMD_AR10); |
| 1135 | spin_unlock_irqrestore(&card->lock, flags); |
| 1136 | break; |
| 1137 | case HW_RESET_REQ: |
| 1138 | spin_lock_irqsave(&card->lock, flags); |
| 1139 | if (card->state != W_L1IND_DRD) |
| 1140 | ph_command(card, W_L1CMD_RST); |
| 1141 | ph_command(card, W_L1CMD_ECK); |
| 1142 | spin_unlock_irqrestore(&card->lock, flags); |
| 1143 | break; |
| 1144 | case HW_DEACT_REQ: |
| 1145 | skb_queue_purge(&dch->squeue); |
| 1146 | if (dch->tx_skb) { |
| 1147 | dev_kfree_skb(dch->tx_skb); |
| 1148 | dch->tx_skb = NULL; |
| 1149 | } |
| 1150 | dch->tx_idx = 0; |
| 1151 | if (dch->rx_skb) { |
| 1152 | dev_kfree_skb(dch->rx_skb); |
| 1153 | dch->rx_skb = NULL; |
| 1154 | } |
| 1155 | test_and_clear_bit(FLG_TX_BUSY, &dch->Flags); |
| 1156 | if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags)) |
| 1157 | del_timer(&dch->timer); |
| 1158 | break; |
| 1159 | case HW_POWERUP_REQ: |
| 1160 | spin_lock_irqsave(&card->lock, flags); |
| 1161 | ph_command(card, W_L1CMD_ECK); |
| 1162 | spin_unlock_irqrestore(&card->lock, flags); |
| 1163 | break; |
| 1164 | case PH_ACTIVATE_IND: |
| 1165 | test_and_set_bit(FLG_ACTIVE, &dch->Flags); |
| 1166 | _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL, |
| 1167 | GFP_ATOMIC); |
| 1168 | break; |
| 1169 | case PH_DEACTIVATE_IND: |
| 1170 | test_and_clear_bit(FLG_ACTIVE, &dch->Flags); |
| 1171 | _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL, |
| 1172 | GFP_ATOMIC); |
| 1173 | break; |
| 1174 | default: |
| 1175 | pr_debug("%s: %s unknown command %x\n", card->name, |
| 1176 | __func__, cmd); |
| 1177 | return -1; |
| 1178 | } |
| 1179 | return 0; |
| 1180 | } |
| 1181 | |
| 1182 | static int |
| 1183 | open_dchannel(struct w6692_hw *card, struct channel_req *rq) |
| 1184 | { |
| 1185 | pr_debug("%s: %s dev(%d) open from %p\n", card->name, __func__, |
| 1186 | card->dch.dev.id, __builtin_return_address(1)); |
| 1187 | if (rq->protocol != ISDN_P_TE_S0) |
| 1188 | return -EINVAL; |
| 1189 | if (rq->adr.channel == 1) |
| 1190 | /* E-Channel not supported */ |
| 1191 | return -EINVAL; |
| 1192 | rq->ch = &card->dch.dev.D; |
| 1193 | rq->ch->protocol = rq->protocol; |
| 1194 | if (card->dch.state == 7) |
| 1195 | _queue_data(rq->ch, PH_ACTIVATE_IND, MISDN_ID_ANY, |
| 1196 | 0, NULL, GFP_KERNEL); |
| 1197 | return 0; |
| 1198 | } |
| 1199 | |
| 1200 | static int |
| 1201 | w6692_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg) |
| 1202 | { |
| 1203 | struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D); |
| 1204 | struct dchannel *dch = container_of(dev, struct dchannel, dev); |
| 1205 | struct w6692_hw *card = container_of(dch, struct w6692_hw, dch); |
| 1206 | struct channel_req *rq; |
| 1207 | int err = 0; |
| 1208 | |
| 1209 | pr_debug("%s: DCTRL: %x %p\n", card->name, cmd, arg); |
| 1210 | switch (cmd) { |
| 1211 | case OPEN_CHANNEL: |
| 1212 | rq = arg; |
| 1213 | if (rq->protocol == ISDN_P_TE_S0) |
| 1214 | err = open_dchannel(card, rq); |
| 1215 | else |
| 1216 | err = open_bchannel(card, rq); |
| 1217 | if (err) |
| 1218 | break; |
| 1219 | if (!try_module_get(THIS_MODULE)) |
| 1220 | pr_info("%s: cannot get module\n", card->name); |
| 1221 | break; |
| 1222 | case CLOSE_CHANNEL: |
| 1223 | pr_debug("%s: dev(%d) close from %p\n", card->name, |
| 1224 | dch->dev.id, __builtin_return_address(0)); |
| 1225 | module_put(THIS_MODULE); |
| 1226 | break; |
| 1227 | case CONTROL_CHANNEL: |
| 1228 | err = channel_ctrl(card, arg); |
| 1229 | break; |
| 1230 | default: |
| 1231 | pr_debug("%s: unknown DCTRL command %x\n", card->name, cmd); |
| 1232 | return -EINVAL; |
| 1233 | } |
| 1234 | return err; |
| 1235 | } |
| 1236 | |
Stephen Rothwell | 7003491 | 2009-07-27 08:05:52 -0700 | [diff] [blame^] | 1237 | static int |
Karsten Keil | 707b2ce | 2009-07-22 20:06:05 +0200 | [diff] [blame] | 1238 | setup_w6692(struct w6692_hw *card) |
| 1239 | { |
| 1240 | u32 val; |
| 1241 | |
| 1242 | if (!request_region(card->addr, 256, card->name)) { |
| 1243 | pr_info("%s: config port %x-%x already in use\n", card->name, |
| 1244 | card->addr, card->addr + 255); |
| 1245 | return -EIO; |
| 1246 | } |
| 1247 | W6692Version(card); |
| 1248 | card->bc[0].addr = card->addr; |
| 1249 | card->bc[1].addr = card->addr + 0x40; |
| 1250 | val = ReadW6692(card, W_ISTA); |
| 1251 | if (debug & DEBUG_HW) |
| 1252 | pr_notice("%s ISTA=%02x\n", card->name, val); |
| 1253 | val = ReadW6692(card, W_IMASK); |
| 1254 | if (debug & DEBUG_HW) |
| 1255 | pr_notice("%s IMASK=%02x\n", card->name, val); |
| 1256 | val = ReadW6692(card, W_D_EXIR); |
| 1257 | if (debug & DEBUG_HW) |
| 1258 | pr_notice("%s D_EXIR=%02x\n", card->name, val); |
| 1259 | val = ReadW6692(card, W_D_EXIM); |
| 1260 | if (debug & DEBUG_HW) |
| 1261 | pr_notice("%s D_EXIM=%02x\n", card->name, val); |
| 1262 | val = ReadW6692(card, W_D_RSTA); |
| 1263 | if (debug & DEBUG_HW) |
| 1264 | pr_notice("%s D_RSTA=%02x\n", card->name, val); |
| 1265 | return 0; |
| 1266 | } |
| 1267 | |
| 1268 | static void |
| 1269 | release_card(struct w6692_hw *card) |
| 1270 | { |
| 1271 | u_long flags; |
| 1272 | |
| 1273 | spin_lock_irqsave(&card->lock, flags); |
| 1274 | disable_hwirq(card); |
| 1275 | w6692_mode(&card->bc[0], ISDN_P_NONE); |
| 1276 | w6692_mode(&card->bc[1], ISDN_P_NONE); |
| 1277 | if ((card->fmask & led) || card->subtype == W6692_USR) { |
| 1278 | card->xdata |= 0x04; /* LED OFF */ |
| 1279 | WriteW6692(card, W_XDATA, card->xdata); |
| 1280 | } |
| 1281 | spin_unlock_irqrestore(&card->lock, flags); |
| 1282 | free_irq(card->irq, card); |
| 1283 | l1_event(card->dch.l1, CLOSE_CHANNEL); |
| 1284 | mISDN_unregister_device(&card->dch.dev); |
| 1285 | release_region(card->addr, 256); |
| 1286 | mISDN_freebchannel(&card->bc[1].bch); |
| 1287 | mISDN_freebchannel(&card->bc[0].bch); |
| 1288 | mISDN_freedchannel(&card->dch); |
| 1289 | write_lock_irqsave(&card_lock, flags); |
| 1290 | list_del(&card->list); |
| 1291 | write_unlock_irqrestore(&card_lock, flags); |
| 1292 | pci_disable_device(card->pdev); |
| 1293 | pci_set_drvdata(card->pdev, NULL); |
| 1294 | kfree(card); |
| 1295 | } |
| 1296 | |
| 1297 | static int |
| 1298 | setup_instance(struct w6692_hw *card) |
| 1299 | { |
| 1300 | int i, err; |
| 1301 | u_long flags; |
| 1302 | |
| 1303 | snprintf(card->name, MISDN_MAX_IDLEN - 1, "w6692.%d", w6692_cnt + 1); |
| 1304 | write_lock_irqsave(&card_lock, flags); |
| 1305 | list_add_tail(&card->list, &Cards); |
| 1306 | write_unlock_irqrestore(&card_lock, flags); |
| 1307 | card->fmask = (1 << w6692_cnt); |
| 1308 | _set_debug(card); |
| 1309 | spin_lock_init(&card->lock); |
| 1310 | mISDN_initdchannel(&card->dch, MAX_DFRAME_LEN_L1, W6692_ph_bh); |
| 1311 | card->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0); |
| 1312 | card->dch.dev.D.send = w6692_l2l1D; |
| 1313 | card->dch.dev.D.ctrl = w6692_dctrl; |
| 1314 | card->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) | |
| 1315 | (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK)); |
| 1316 | card->dch.hw = card; |
| 1317 | card->dch.dev.nrbchan = 2; |
| 1318 | for (i = 0; i < 2; i++) { |
| 1319 | mISDN_initbchannel(&card->bc[i].bch, MAX_DATA_MEM); |
| 1320 | card->bc[i].bch.hw = card; |
| 1321 | card->bc[i].bch.nr = i + 1; |
| 1322 | card->bc[i].bch.ch.nr = i + 1; |
| 1323 | card->bc[i].bch.ch.send = w6692_l2l1B; |
| 1324 | card->bc[i].bch.ch.ctrl = w6692_bctrl; |
| 1325 | set_channelmap(i + 1, card->dch.dev.channelmap); |
| 1326 | list_add(&card->bc[i].bch.ch.list, &card->dch.dev.bchannels); |
| 1327 | } |
| 1328 | err = setup_w6692(card); |
| 1329 | if (err) |
| 1330 | goto error_setup; |
| 1331 | err = mISDN_register_device(&card->dch.dev, &card->pdev->dev, |
| 1332 | card->name); |
| 1333 | if (err) |
| 1334 | goto error_reg; |
| 1335 | err = init_card(card); |
| 1336 | if (err) |
| 1337 | goto error_init; |
| 1338 | err = create_l1(&card->dch, w6692_l1callback); |
| 1339 | if (!err) { |
| 1340 | w6692_cnt++; |
| 1341 | pr_notice("W6692 %d cards installed\n", w6692_cnt); |
| 1342 | return 0; |
| 1343 | } |
| 1344 | |
| 1345 | free_irq(card->irq, card); |
| 1346 | error_init: |
| 1347 | mISDN_unregister_device(&card->dch.dev); |
| 1348 | error_reg: |
| 1349 | release_region(card->addr, 256); |
| 1350 | error_setup: |
| 1351 | mISDN_freebchannel(&card->bc[1].bch); |
| 1352 | mISDN_freebchannel(&card->bc[0].bch); |
| 1353 | mISDN_freedchannel(&card->dch); |
| 1354 | write_lock_irqsave(&card_lock, flags); |
| 1355 | list_del(&card->list); |
| 1356 | write_unlock_irqrestore(&card_lock, flags); |
| 1357 | kfree(card); |
| 1358 | return err; |
| 1359 | } |
| 1360 | |
| 1361 | static int __devinit |
| 1362 | w6692_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| 1363 | { |
| 1364 | int err = -ENOMEM; |
| 1365 | struct w6692_hw *card; |
| 1366 | struct w6692map *m = (struct w6692map *)ent->driver_data; |
| 1367 | |
| 1368 | card = kzalloc(sizeof(struct w6692_hw), GFP_KERNEL); |
| 1369 | if (!card) { |
| 1370 | pr_info("No kmem for w6692 card\n"); |
| 1371 | return err; |
| 1372 | } |
| 1373 | card->pdev = pdev; |
| 1374 | card->subtype = m->subtype; |
| 1375 | err = pci_enable_device(pdev); |
| 1376 | if (err) { |
| 1377 | kfree(card); |
| 1378 | return err; |
| 1379 | } |
| 1380 | |
| 1381 | printk(KERN_INFO "mISDN_w6692: found adapter %s at %s\n", |
| 1382 | m->name, pci_name(pdev)); |
| 1383 | |
| 1384 | card->addr = pci_resource_start(pdev, 1); |
| 1385 | card->irq = pdev->irq; |
| 1386 | pci_set_drvdata(pdev, card); |
| 1387 | err = setup_instance(card); |
| 1388 | if (err) |
| 1389 | pci_set_drvdata(pdev, NULL); |
| 1390 | return err; |
| 1391 | } |
| 1392 | |
| 1393 | static void __devexit |
| 1394 | w6692_remove_pci(struct pci_dev *pdev) |
| 1395 | { |
| 1396 | struct w6692_hw *card = pci_get_drvdata(pdev); |
| 1397 | |
| 1398 | if (card) |
| 1399 | release_card(card); |
| 1400 | else |
| 1401 | if (debug) |
| 1402 | pr_notice("%s: drvdata allready removed\n", __func__); |
| 1403 | } |
| 1404 | |
| 1405 | static struct pci_device_id w6692_ids[] = { |
| 1406 | { PCI_VENDOR_ID_DYNALINK, PCI_DEVICE_ID_DYNALINK_IS64PH, |
| 1407 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[0]}, |
| 1408 | { PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692, |
| 1409 | PCI_VENDOR_ID_USR, PCI_DEVICE_ID_USR_6692, 0, 0, |
| 1410 | (ulong)&w6692_map[2]}, |
| 1411 | { PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692, |
| 1412 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[1]}, |
| 1413 | { } |
| 1414 | }; |
| 1415 | MODULE_DEVICE_TABLE(pci, w6692_ids); |
| 1416 | |
| 1417 | static struct pci_driver w6692_driver = { |
| 1418 | .name = "w6692", |
| 1419 | .probe = w6692_probe, |
| 1420 | .remove = __devexit_p(w6692_remove_pci), |
| 1421 | .id_table = w6692_ids, |
| 1422 | }; |
| 1423 | |
| 1424 | static int __init w6692_init(void) |
| 1425 | { |
| 1426 | int err; |
| 1427 | |
| 1428 | pr_notice("Winbond W6692 PCI driver Rev. %s\n", W6692_REV); |
| 1429 | |
| 1430 | err = pci_register_driver(&w6692_driver); |
| 1431 | return err; |
| 1432 | } |
| 1433 | |
| 1434 | static void __exit w6692_cleanup(void) |
| 1435 | { |
| 1436 | pci_unregister_driver(&w6692_driver); |
| 1437 | } |
| 1438 | |
| 1439 | module_init(w6692_init); |
| 1440 | module_exit(w6692_cleanup); |