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707b2ce6 KK |
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 | ||
a6b7a407 | 24 | #include <linux/interrupt.h> |
707b2ce6 KK |
25 | #include <linux/module.h> |
26 | #include <linux/pci.h> | |
27 | #include <linux/delay.h> | |
28 | #include <linux/mISDNhw.h> | |
5a0e3ad6 | 29 | #include <linux/slab.h> |
707b2ce6 KK |
30 | #include "w6692.h" |
31 | ||
32 | #define W6692_REV "2.0" | |
33 | ||
34 | #define DBUSY_TIMER_VALUE 80 | |
35 | ||
36 | enum { | |
37 | W6692_ASUS, | |
38 | W6692_WINBOND, | |
39 | W6692_USR | |
40 | }; | |
41 | ||
42 | /* private data in the PCI devices list */ | |
43 | struct w6692map { | |
44 | u_int subtype; | |
45 | char *name; | |
46 | }; | |
47 | ||
48 | static const struct w6692map w6692_map[] = | |
49 | { | |
50 | {W6692_ASUS, "Dynalink/AsusCom IS64PH"}, | |
51 | {W6692_WINBOND, "Winbond W6692"}, | |
52 | {W6692_USR, "USR W6692"} | |
53 | }; | |
54 | ||
55 | #ifndef PCI_VENDOR_ID_USR | |
56 | #define PCI_VENDOR_ID_USR 0x16ec | |
57 | #define PCI_DEVICE_ID_USR_6692 0x3409 | |
58 | #endif | |
59 | ||
60 | struct w6692_ch { | |
61 | struct bchannel bch; | |
62 | u32 addr; | |
63 | struct timer_list timer; | |
64 | u8 b_mode; | |
65 | }; | |
66 | ||
67 | struct w6692_hw { | |
68 | struct list_head list; | |
69 | struct pci_dev *pdev; | |
70 | char name[MISDN_MAX_IDLEN]; | |
71 | u32 irq; | |
72 | u32 irqcnt; | |
73 | u32 addr; | |
74 | u32 fmask; /* feature mask - bit set per card nr */ | |
75 | int subtype; | |
76 | spinlock_t lock; /* hw lock */ | |
77 | u8 imask; | |
78 | u8 pctl; | |
79 | u8 xaddr; | |
80 | u8 xdata; | |
81 | u8 state; | |
82 | struct w6692_ch bc[2]; | |
83 | struct dchannel dch; | |
84 | char log[64]; | |
85 | }; | |
86 | ||
87 | static LIST_HEAD(Cards); | |
88 | static DEFINE_RWLOCK(card_lock); /* protect Cards */ | |
89 | ||
90 | static int w6692_cnt; | |
91 | static int debug; | |
92 | static u32 led; | |
93 | static u32 pots; | |
94 | ||
95 | static void | |
96 | _set_debug(struct w6692_hw *card) | |
97 | { | |
98 | card->dch.debug = debug; | |
99 | card->bc[0].bch.debug = debug; | |
100 | card->bc[1].bch.debug = debug; | |
101 | } | |
102 | ||
103 | static int | |
104 | set_debug(const char *val, struct kernel_param *kp) | |
105 | { | |
106 | int ret; | |
107 | struct w6692_hw *card; | |
108 | ||
109 | ret = param_set_uint(val, kp); | |
110 | if (!ret) { | |
111 | read_lock(&card_lock); | |
112 | list_for_each_entry(card, &Cards, list) | |
113 | _set_debug(card); | |
114 | read_unlock(&card_lock); | |
115 | } | |
116 | return ret; | |
117 | } | |
118 | ||
119 | MODULE_AUTHOR("Karsten Keil"); | |
120 | MODULE_LICENSE("GPL v2"); | |
121 | MODULE_VERSION(W6692_REV); | |
122 | module_param_call(debug, set_debug, param_get_uint, &debug, S_IRUGO | S_IWUSR); | |
123 | MODULE_PARM_DESC(debug, "W6692 debug mask"); | |
124 | module_param(led, uint, S_IRUGO | S_IWUSR); | |
125 | MODULE_PARM_DESC(led, "W6692 LED support bitmask (one bit per card)"); | |
126 | module_param(pots, uint, S_IRUGO | S_IWUSR); | |
127 | MODULE_PARM_DESC(pots, "W6692 POTS support bitmask (one bit per card)"); | |
128 | ||
129 | static inline u8 | |
130 | ReadW6692(struct w6692_hw *card, u8 offset) | |
131 | { | |
132 | return inb(card->addr + offset); | |
133 | } | |
134 | ||
135 | static inline void | |
136 | WriteW6692(struct w6692_hw *card, u8 offset, u8 value) | |
137 | { | |
138 | outb(value, card->addr + offset); | |
139 | } | |
140 | ||
141 | static inline u8 | |
142 | ReadW6692B(struct w6692_ch *bc, u8 offset) | |
143 | { | |
144 | return inb(bc->addr + offset); | |
145 | } | |
146 | ||
147 | static inline void | |
148 | WriteW6692B(struct w6692_ch *bc, u8 offset, u8 value) | |
149 | { | |
150 | outb(value, bc->addr + offset); | |
151 | } | |
152 | ||
153 | static void | |
154 | enable_hwirq(struct w6692_hw *card) | |
155 | { | |
156 | WriteW6692(card, W_IMASK, card->imask); | |
157 | } | |
158 | ||
159 | static void | |
160 | disable_hwirq(struct w6692_hw *card) | |
161 | { | |
162 | WriteW6692(card, W_IMASK, 0xff); | |
163 | } | |
164 | ||
165 | static const char *W6692Ver[] = {"V00", "V01", "V10", "V11"}; | |
166 | ||
167 | static void | |
168 | W6692Version(struct w6692_hw *card) | |
169 | { | |
170 | int val; | |
171 | ||
172 | val = ReadW6692(card, W_D_RBCH); | |
173 | pr_notice("%s: Winbond W6692 version: %s\n", card->name, | |
475be4d8 | 174 | W6692Ver[(val >> 6) & 3]); |
707b2ce6 KK |
175 | } |
176 | ||
177 | static void | |
178 | w6692_led_handler(struct w6692_hw *card, int on) | |
179 | { | |
180 | if ((!(card->fmask & led)) || card->subtype == W6692_USR) | |
181 | return; | |
182 | if (on) { | |
183 | card->xdata &= 0xfb; /* LED ON */ | |
184 | WriteW6692(card, W_XDATA, card->xdata); | |
185 | } else { | |
186 | card->xdata |= 0x04; /* LED OFF */ | |
187 | WriteW6692(card, W_XDATA, card->xdata); | |
188 | } | |
189 | } | |
190 | ||
191 | static void | |
192 | ph_command(struct w6692_hw *card, u8 cmd) | |
193 | { | |
194 | pr_debug("%s: ph_command %x\n", card->name, cmd); | |
195 | WriteW6692(card, W_CIX, cmd); | |
196 | } | |
197 | ||
198 | static void | |
199 | W6692_new_ph(struct w6692_hw *card) | |
200 | { | |
201 | if (card->state == W_L1CMD_RST) | |
202 | ph_command(card, W_L1CMD_DRC); | |
203 | schedule_event(&card->dch, FLG_PHCHANGE); | |
204 | } | |
205 | ||
206 | static void | |
207 | W6692_ph_bh(struct dchannel *dch) | |
208 | { | |
209 | struct w6692_hw *card = dch->hw; | |
210 | ||
211 | switch (card->state) { | |
212 | case W_L1CMD_RST: | |
213 | dch->state = 0; | |
214 | l1_event(dch->l1, HW_RESET_IND); | |
215 | break; | |
216 | case W_L1IND_CD: | |
217 | dch->state = 3; | |
218 | l1_event(dch->l1, HW_DEACT_CNF); | |
219 | break; | |
220 | case W_L1IND_DRD: | |
221 | dch->state = 3; | |
222 | l1_event(dch->l1, HW_DEACT_IND); | |
223 | break; | |
224 | case W_L1IND_CE: | |
225 | dch->state = 4; | |
226 | l1_event(dch->l1, HW_POWERUP_IND); | |
227 | break; | |
228 | case W_L1IND_LD: | |
229 | if (dch->state <= 5) { | |
230 | dch->state = 5; | |
231 | l1_event(dch->l1, ANYSIGNAL); | |
232 | } else { | |
233 | dch->state = 8; | |
234 | l1_event(dch->l1, LOSTFRAMING); | |
235 | } | |
236 | break; | |
237 | case W_L1IND_ARD: | |
238 | dch->state = 6; | |
239 | l1_event(dch->l1, INFO2); | |
240 | break; | |
241 | case W_L1IND_AI8: | |
242 | dch->state = 7; | |
243 | l1_event(dch->l1, INFO4_P8); | |
244 | break; | |
245 | case W_L1IND_AI10: | |
246 | dch->state = 7; | |
247 | l1_event(dch->l1, INFO4_P10); | |
248 | break; | |
249 | default: | |
250 | pr_debug("%s: TE unknown state %02x dch state %02x\n", | |
475be4d8 | 251 | card->name, card->state, dch->state); |
707b2ce6 KK |
252 | break; |
253 | } | |
254 | pr_debug("%s: TE newstate %02x\n", card->name, dch->state); | |
255 | } | |
256 | ||
257 | static void | |
258 | W6692_empty_Dfifo(struct w6692_hw *card, int count) | |
259 | { | |
260 | struct dchannel *dch = &card->dch; | |
261 | u8 *ptr; | |
262 | ||
263 | pr_debug("%s: empty_Dfifo %d\n", card->name, count); | |
264 | if (!dch->rx_skb) { | |
265 | dch->rx_skb = mI_alloc_skb(card->dch.maxlen, GFP_ATOMIC); | |
266 | if (!dch->rx_skb) { | |
267 | pr_info("%s: D receive out of memory\n", card->name); | |
268 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK); | |
269 | return; | |
270 | } | |
271 | } | |
272 | if ((dch->rx_skb->len + count) >= dch->maxlen) { | |
273 | pr_debug("%s: empty_Dfifo overrun %d\n", card->name, | |
475be4d8 | 274 | dch->rx_skb->len + count); |
707b2ce6 KK |
275 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK); |
276 | return; | |
277 | } | |
278 | ptr = skb_put(dch->rx_skb, count); | |
279 | insb(card->addr + W_D_RFIFO, ptr, count); | |
280 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK); | |
281 | if (debug & DEBUG_HW_DFIFO) { | |
282 | snprintf(card->log, 63, "D-recv %s %d ", | |
475be4d8 | 283 | card->name, count); |
707b2ce6 KK |
284 | print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count); |
285 | } | |
286 | } | |
287 | ||
288 | static void | |
289 | W6692_fill_Dfifo(struct w6692_hw *card) | |
290 | { | |
291 | struct dchannel *dch = &card->dch; | |
292 | int count; | |
293 | u8 *ptr; | |
294 | u8 cmd = W_D_CMDR_XMS; | |
295 | ||
296 | pr_debug("%s: fill_Dfifo\n", card->name); | |
297 | if (!dch->tx_skb) | |
298 | return; | |
299 | count = dch->tx_skb->len - dch->tx_idx; | |
300 | if (count <= 0) | |
301 | return; | |
302 | if (count > W_D_FIFO_THRESH) | |
303 | count = W_D_FIFO_THRESH; | |
304 | else | |
305 | cmd |= W_D_CMDR_XME; | |
306 | ptr = dch->tx_skb->data + dch->tx_idx; | |
307 | dch->tx_idx += count; | |
308 | outsb(card->addr + W_D_XFIFO, ptr, count); | |
309 | WriteW6692(card, W_D_CMDR, cmd); | |
310 | if (test_and_set_bit(FLG_BUSY_TIMER, &dch->Flags)) { | |
311 | pr_debug("%s: fill_Dfifo dbusytimer running\n", card->name); | |
312 | del_timer(&dch->timer); | |
313 | } | |
314 | init_timer(&dch->timer); | |
475be4d8 | 315 | dch->timer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ) / 1000); |
707b2ce6 KK |
316 | add_timer(&dch->timer); |
317 | if (debug & DEBUG_HW_DFIFO) { | |
318 | snprintf(card->log, 63, "D-send %s %d ", | |
475be4d8 | 319 | card->name, count); |
707b2ce6 KK |
320 | print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count); |
321 | } | |
322 | } | |
323 | ||
324 | static void | |
325 | d_retransmit(struct w6692_hw *card) | |
326 | { | |
327 | struct dchannel *dch = &card->dch; | |
328 | ||
329 | if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags)) | |
330 | del_timer(&dch->timer); | |
331 | #ifdef FIXME | |
332 | if (test_and_clear_bit(FLG_L1_BUSY, &dch->Flags)) | |
333 | dchannel_sched_event(dch, D_CLEARBUSY); | |
334 | #endif | |
335 | if (test_bit(FLG_TX_BUSY, &dch->Flags)) { | |
336 | /* Restart frame */ | |
337 | dch->tx_idx = 0; | |
338 | W6692_fill_Dfifo(card); | |
339 | } else if (dch->tx_skb) { /* should not happen */ | |
340 | pr_info("%s: %s without TX_BUSY\n", card->name, __func__); | |
341 | test_and_set_bit(FLG_TX_BUSY, &dch->Flags); | |
342 | dch->tx_idx = 0; | |
343 | W6692_fill_Dfifo(card); | |
344 | } else { | |
345 | pr_info("%s: XDU no TX_BUSY\n", card->name); | |
346 | if (get_next_dframe(dch)) | |
347 | W6692_fill_Dfifo(card); | |
348 | } | |
349 | } | |
350 | ||
351 | static void | |
352 | handle_rxD(struct w6692_hw *card) { | |
353 | u8 stat; | |
354 | int count; | |
355 | ||
356 | stat = ReadW6692(card, W_D_RSTA); | |
357 | if (stat & (W_D_RSTA_RDOV | W_D_RSTA_CRCE | W_D_RSTA_RMB)) { | |
358 | if (stat & W_D_RSTA_RDOV) { | |
359 | pr_debug("%s: D-channel RDOV\n", card->name); | |
360 | #ifdef ERROR_STATISTIC | |
361 | card->dch.err_rx++; | |
362 | #endif | |
363 | } | |
364 | if (stat & W_D_RSTA_CRCE) { | |
365 | pr_debug("%s: D-channel CRC error\n", card->name); | |
366 | #ifdef ERROR_STATISTIC | |
367 | card->dch.err_crc++; | |
368 | #endif | |
369 | } | |
370 | if (stat & W_D_RSTA_RMB) { | |
371 | pr_debug("%s: D-channel ABORT\n", card->name); | |
372 | #ifdef ERROR_STATISTIC | |
373 | card->dch.err_rx++; | |
374 | #endif | |
375 | } | |
376 | if (card->dch.rx_skb) | |
377 | dev_kfree_skb(card->dch.rx_skb); | |
378 | card->dch.rx_skb = NULL; | |
379 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK | W_D_CMDR_RRST); | |
380 | } else { | |
381 | count = ReadW6692(card, W_D_RBCL) & (W_D_FIFO_THRESH - 1); | |
382 | if (count == 0) | |
383 | count = W_D_FIFO_THRESH; | |
384 | W6692_empty_Dfifo(card, count); | |
385 | recv_Dchannel(&card->dch); | |
386 | } | |
387 | } | |
388 | ||
389 | static void | |
390 | handle_txD(struct w6692_hw *card) { | |
391 | if (test_and_clear_bit(FLG_BUSY_TIMER, &card->dch.Flags)) | |
392 | del_timer(&card->dch.timer); | |
393 | if (card->dch.tx_skb && card->dch.tx_idx < card->dch.tx_skb->len) { | |
394 | W6692_fill_Dfifo(card); | |
395 | } else { | |
396 | if (card->dch.tx_skb) | |
397 | dev_kfree_skb(card->dch.tx_skb); | |
398 | if (get_next_dframe(&card->dch)) | |
399 | W6692_fill_Dfifo(card); | |
400 | } | |
401 | } | |
402 | ||
403 | static void | |
404 | handle_statusD(struct w6692_hw *card) | |
405 | { | |
406 | struct dchannel *dch = &card->dch; | |
407 | u8 exval, v1, cir; | |
408 | ||
409 | exval = ReadW6692(card, W_D_EXIR); | |
410 | ||
411 | pr_debug("%s: D_EXIR %02x\n", card->name, exval); | |
412 | if (exval & (W_D_EXI_XDUN | W_D_EXI_XCOL)) { | |
413 | /* Transmit underrun/collision */ | |
414 | pr_debug("%s: D-channel underrun/collision\n", card->name); | |
415 | #ifdef ERROR_STATISTIC | |
416 | dch->err_tx++; | |
417 | #endif | |
418 | d_retransmit(card); | |
419 | } | |
420 | if (exval & W_D_EXI_RDOV) { /* RDOV */ | |
421 | pr_debug("%s: D-channel RDOV\n", card->name); | |
422 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST); | |
423 | } | |
424 | if (exval & W_D_EXI_TIN2) /* TIN2 - never */ | |
425 | pr_debug("%s: spurious TIN2 interrupt\n", card->name); | |
426 | if (exval & W_D_EXI_MOC) { /* MOC - not supported */ | |
427 | v1 = ReadW6692(card, W_MOSR); | |
428 | pr_debug("%s: spurious MOC interrupt MOSR %02x\n", | |
475be4d8 | 429 | card->name, v1); |
707b2ce6 KK |
430 | } |
431 | if (exval & W_D_EXI_ISC) { /* ISC - Level1 change */ | |
432 | cir = ReadW6692(card, W_CIR); | |
433 | pr_debug("%s: ISC CIR %02X\n", card->name, cir); | |
434 | if (cir & W_CIR_ICC) { | |
435 | v1 = cir & W_CIR_COD_MASK; | |
436 | pr_debug("%s: ph_state_change %x -> %x\n", card->name, | |
475be4d8 | 437 | dch->state, v1); |
707b2ce6 KK |
438 | card->state = v1; |
439 | if (card->fmask & led) { | |
440 | switch (v1) { | |
441 | case W_L1IND_AI8: | |
442 | case W_L1IND_AI10: | |
443 | w6692_led_handler(card, 1); | |
444 | break; | |
445 | default: | |
446 | w6692_led_handler(card, 0); | |
447 | break; | |
448 | } | |
449 | } | |
450 | W6692_new_ph(card); | |
451 | } | |
452 | if (cir & W_CIR_SCC) { | |
453 | v1 = ReadW6692(card, W_SQR); | |
454 | pr_debug("%s: SCC SQR %02X\n", card->name, v1); | |
455 | } | |
456 | } | |
457 | if (exval & W_D_EXI_WEXP) | |
458 | pr_debug("%s: spurious WEXP interrupt!\n", card->name); | |
459 | if (exval & W_D_EXI_TEXP) | |
460 | pr_debug("%s: spurious TEXP interrupt!\n", card->name); | |
461 | } | |
462 | ||
463 | static void | |
464 | W6692_empty_Bfifo(struct w6692_ch *wch, int count) | |
465 | { | |
466 | struct w6692_hw *card = wch->bch.hw; | |
467 | u8 *ptr; | |
7206e659 | 468 | int maxlen; |
707b2ce6 KK |
469 | |
470 | pr_debug("%s: empty_Bfifo %d\n", card->name, count); | |
471 | if (unlikely(wch->bch.state == ISDN_P_NONE)) { | |
472 | pr_debug("%s: empty_Bfifo ISDN_P_NONE\n", card->name); | |
473 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT); | |
474 | if (wch->bch.rx_skb) | |
475 | skb_trim(wch->bch.rx_skb, 0); | |
476 | return; | |
477 | } | |
c27b46e7 KK |
478 | if (test_bit(FLG_RX_OFF, &wch->bch.Flags)) { |
479 | wch->bch.dropcnt += count; | |
480 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT); | |
481 | return; | |
482 | } | |
7206e659 KK |
483 | maxlen = bchannel_get_rxbuf(&wch->bch, count); |
484 | if (maxlen < 0) { | |
707b2ce6 | 485 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT); |
7206e659 KK |
486 | if (wch->bch.rx_skb) |
487 | skb_trim(wch->bch.rx_skb, 0); | |
488 | pr_warning("%s.B%d: No bufferspace for %d bytes\n", | |
489 | card->name, wch->bch.nr, count); | |
707b2ce6 KK |
490 | return; |
491 | } | |
492 | ptr = skb_put(wch->bch.rx_skb, count); | |
493 | insb(wch->addr + W_B_RFIFO, ptr, count); | |
494 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT); | |
495 | if (debug & DEBUG_HW_DFIFO) { | |
496 | snprintf(card->log, 63, "B%1d-recv %s %d ", | |
475be4d8 | 497 | wch->bch.nr, card->name, count); |
707b2ce6 KK |
498 | print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count); |
499 | } | |
500 | } | |
501 | ||
502 | static void | |
503 | W6692_fill_Bfifo(struct w6692_ch *wch) | |
504 | { | |
505 | struct w6692_hw *card = wch->bch.hw; | |
6d1ee48f | 506 | int count, fillempty = 0; |
707b2ce6 KK |
507 | u8 *ptr, cmd = W_B_CMDR_RACT | W_B_CMDR_XMS; |
508 | ||
509 | pr_debug("%s: fill Bfifo\n", card->name); | |
6d1ee48f KK |
510 | if (!wch->bch.tx_skb) { |
511 | if (!test_bit(FLG_TX_EMPTY, &wch->bch.Flags)) | |
512 | return; | |
513 | ptr = wch->bch.fill; | |
514 | count = W_B_FIFO_THRESH; | |
515 | fillempty = 1; | |
516 | } else { | |
517 | count = wch->bch.tx_skb->len - wch->bch.tx_idx; | |
518 | if (count <= 0) | |
519 | return; | |
520 | ptr = wch->bch.tx_skb->data + wch->bch.tx_idx; | |
521 | } | |
707b2ce6 KK |
522 | if (count > W_B_FIFO_THRESH) |
523 | count = W_B_FIFO_THRESH; | |
524 | else if (test_bit(FLG_HDLC, &wch->bch.Flags)) | |
525 | cmd |= W_B_CMDR_XME; | |
526 | ||
527 | pr_debug("%s: fill Bfifo%d/%d\n", card->name, | |
475be4d8 | 528 | count, wch->bch.tx_idx); |
707b2ce6 | 529 | wch->bch.tx_idx += count; |
6d1ee48f KK |
530 | if (fillempty) { |
531 | while (count > 0) { | |
532 | outsb(wch->addr + W_B_XFIFO, ptr, MISDN_BCH_FILL_SIZE); | |
533 | count -= MISDN_BCH_FILL_SIZE; | |
534 | } | |
535 | } else { | |
536 | outsb(wch->addr + W_B_XFIFO, ptr, count); | |
537 | } | |
707b2ce6 | 538 | WriteW6692B(wch, W_B_CMDR, cmd); |
6d1ee48f | 539 | if ((debug & DEBUG_HW_BFIFO) && !fillempty) { |
707b2ce6 | 540 | snprintf(card->log, 63, "B%1d-send %s %d ", |
475be4d8 | 541 | wch->bch.nr, card->name, count); |
707b2ce6 KK |
542 | print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count); |
543 | } | |
544 | } | |
545 | ||
3e598177 | 546 | #if 0 |
707b2ce6 KK |
547 | static int |
548 | setvolume(struct w6692_ch *wch, int mic, struct sk_buff *skb) | |
549 | { | |
550 | struct w6692_hw *card = wch->bch.hw; | |
551 | u16 *vol = (u16 *)skb->data; | |
552 | u8 val; | |
553 | ||
554 | if ((!(card->fmask & pots)) || | |
555 | !test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) | |
556 | return -ENODEV; | |
557 | if (skb->len < 2) | |
558 | return -EINVAL; | |
559 | if (*vol > 7) | |
560 | return -EINVAL; | |
561 | val = *vol & 7; | |
562 | val = 7 - val; | |
563 | if (mic) { | |
564 | val <<= 3; | |
565 | card->xaddr &= 0xc7; | |
566 | } else { | |
567 | card->xaddr &= 0xf8; | |
568 | } | |
569 | card->xaddr |= val; | |
570 | WriteW6692(card, W_XADDR, card->xaddr); | |
571 | return 0; | |
572 | } | |
573 | ||
574 | static int | |
575 | enable_pots(struct w6692_ch *wch) | |
576 | { | |
577 | struct w6692_hw *card = wch->bch.hw; | |
578 | ||
579 | if ((!(card->fmask & pots)) || | |
580 | !test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) | |
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_XRST); | |
585 | card->pctl |= ((wch->bch.nr & 2) ? W_PCTL_PCX : 0); | |
586 | WriteW6692(card, W_PCTL, card->pctl); | |
587 | return 0; | |
588 | } | |
3e598177 | 589 | #endif |
707b2ce6 KK |
590 | |
591 | static int | |
592 | disable_pots(struct w6692_ch *wch) | |
593 | { | |
594 | struct w6692_hw *card = wch->bch.hw; | |
595 | ||
596 | if (!(card->fmask & pots)) | |
597 | return -ENODEV; | |
598 | wch->b_mode &= ~(W_B_MODE_EPCM | W_B_MODE_BSW0); | |
599 | WriteW6692B(wch, W_B_MODE, wch->b_mode); | |
600 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT | | |
475be4d8 | 601 | W_B_CMDR_XRST); |
707b2ce6 KK |
602 | return 0; |
603 | } | |
604 | ||
605 | static int | |
606 | w6692_mode(struct w6692_ch *wch, u32 pr) | |
607 | { | |
608 | struct w6692_hw *card; | |
609 | ||
610 | card = wch->bch.hw; | |
611 | pr_debug("%s: B%d protocol %x-->%x\n", card->name, | |
475be4d8 | 612 | wch->bch.nr, wch->bch.state, pr); |
707b2ce6 KK |
613 | switch (pr) { |
614 | case ISDN_P_NONE: | |
615 | if ((card->fmask & pots) && (wch->b_mode & W_B_MODE_EPCM)) | |
616 | disable_pots(wch); | |
617 | wch->b_mode = 0; | |
618 | mISDN_clear_bchannel(&wch->bch); | |
619 | WriteW6692B(wch, W_B_MODE, wch->b_mode); | |
620 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST); | |
621 | test_and_clear_bit(FLG_HDLC, &wch->bch.Flags); | |
622 | test_and_clear_bit(FLG_TRANSPARENT, &wch->bch.Flags); | |
623 | break; | |
624 | case ISDN_P_B_RAW: | |
625 | wch->b_mode = W_B_MODE_MMS; | |
626 | WriteW6692B(wch, W_B_MODE, wch->b_mode); | |
627 | WriteW6692B(wch, W_B_EXIM, 0); | |
628 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT | | |
475be4d8 | 629 | W_B_CMDR_XRST); |
707b2ce6 KK |
630 | test_and_set_bit(FLG_TRANSPARENT, &wch->bch.Flags); |
631 | break; | |
632 | case ISDN_P_B_HDLC: | |
633 | wch->b_mode = W_B_MODE_ITF; | |
634 | WriteW6692B(wch, W_B_MODE, wch->b_mode); | |
635 | WriteW6692B(wch, W_B_ADM1, 0xff); | |
636 | WriteW6692B(wch, W_B_ADM2, 0xff); | |
637 | WriteW6692B(wch, W_B_EXIM, 0); | |
638 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT | | |
475be4d8 | 639 | W_B_CMDR_XRST); |
707b2ce6 KK |
640 | test_and_set_bit(FLG_HDLC, &wch->bch.Flags); |
641 | break; | |
642 | default: | |
643 | pr_info("%s: protocol %x not known\n", card->name, pr); | |
644 | return -ENOPROTOOPT; | |
645 | } | |
646 | wch->bch.state = pr; | |
647 | return 0; | |
648 | } | |
649 | ||
650 | static void | |
651 | send_next(struct w6692_ch *wch) | |
652 | { | |
8bfddfbe | 653 | if (wch->bch.tx_skb && wch->bch.tx_idx < wch->bch.tx_skb->len) { |
707b2ce6 | 654 | W6692_fill_Bfifo(wch); |
8bfddfbe KK |
655 | } else { |
656 | if (wch->bch.tx_skb) | |
707b2ce6 | 657 | dev_kfree_skb(wch->bch.tx_skb); |
6d1ee48f KK |
658 | if (get_next_bframe(&wch->bch)) { |
659 | W6692_fill_Bfifo(wch); | |
660 | test_and_clear_bit(FLG_TX_EMPTY, &wch->bch.Flags); | |
661 | } else if (test_bit(FLG_TX_EMPTY, &wch->bch.Flags)) { | |
707b2ce6 | 662 | W6692_fill_Bfifo(wch); |
6d1ee48f | 663 | } |
707b2ce6 KK |
664 | } |
665 | } | |
666 | ||
667 | static void | |
668 | W6692B_interrupt(struct w6692_hw *card, int ch) | |
669 | { | |
670 | struct w6692_ch *wch = &card->bc[ch]; | |
671 | int count; | |
672 | u8 stat, star = 0; | |
673 | ||
674 | stat = ReadW6692B(wch, W_B_EXIR); | |
675 | pr_debug("%s: B%d EXIR %02x\n", card->name, wch->bch.nr, stat); | |
676 | if (stat & W_B_EXI_RME) { | |
677 | star = ReadW6692B(wch, W_B_STAR); | |
678 | if (star & (W_B_STAR_RDOV | W_B_STAR_CRCE | W_B_STAR_RMB)) { | |
679 | if ((star & W_B_STAR_RDOV) && | |
680 | test_bit(FLG_ACTIVE, &wch->bch.Flags)) { | |
681 | pr_debug("%s: B%d RDOV proto=%x\n", card->name, | |
475be4d8 | 682 | wch->bch.nr, wch->bch.state); |
707b2ce6 KK |
683 | #ifdef ERROR_STATISTIC |
684 | wch->bch.err_rdo++; | |
685 | #endif | |
686 | } | |
687 | if (test_bit(FLG_HDLC, &wch->bch.Flags)) { | |
688 | if (star & W_B_STAR_CRCE) { | |
689 | pr_debug("%s: B%d CRC error\n", | |
475be4d8 | 690 | card->name, wch->bch.nr); |
707b2ce6 KK |
691 | #ifdef ERROR_STATISTIC |
692 | wch->bch.err_crc++; | |
693 | #endif | |
694 | } | |
695 | if (star & W_B_STAR_RMB) { | |
696 | pr_debug("%s: B%d message abort\n", | |
475be4d8 | 697 | card->name, wch->bch.nr); |
707b2ce6 KK |
698 | #ifdef ERROR_STATISTIC |
699 | wch->bch.err_inv++; | |
700 | #endif | |
701 | } | |
702 | } | |
703 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | | |
475be4d8 | 704 | W_B_CMDR_RRST | W_B_CMDR_RACT); |
707b2ce6 KK |
705 | if (wch->bch.rx_skb) |
706 | skb_trim(wch->bch.rx_skb, 0); | |
707 | } else { | |
708 | count = ReadW6692B(wch, W_B_RBCL) & | |
709 | (W_B_FIFO_THRESH - 1); | |
710 | if (count == 0) | |
711 | count = W_B_FIFO_THRESH; | |
712 | W6692_empty_Bfifo(wch, count); | |
034005a0 | 713 | recv_Bchannel(&wch->bch, 0, false); |
707b2ce6 KK |
714 | } |
715 | } | |
716 | if (stat & W_B_EXI_RMR) { | |
717 | if (!(stat & W_B_EXI_RME)) | |
718 | star = ReadW6692B(wch, W_B_STAR); | |
719 | if (star & W_B_STAR_RDOV) { | |
720 | pr_debug("%s: B%d RDOV proto=%x\n", card->name, | |
475be4d8 | 721 | wch->bch.nr, wch->bch.state); |
707b2ce6 KK |
722 | #ifdef ERROR_STATISTIC |
723 | wch->bch.err_rdo++; | |
724 | #endif | |
725 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | | |
475be4d8 | 726 | W_B_CMDR_RRST | W_B_CMDR_RACT); |
707b2ce6 KK |
727 | } else { |
728 | W6692_empty_Bfifo(wch, W_B_FIFO_THRESH); | |
034005a0 KK |
729 | if (test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) |
730 | recv_Bchannel(&wch->bch, 0, false); | |
707b2ce6 KK |
731 | } |
732 | } | |
733 | if (stat & W_B_EXI_RDOV) { | |
734 | /* only if it is not handled yet */ | |
735 | if (!(star & W_B_STAR_RDOV)) { | |
736 | pr_debug("%s: B%d RDOV IRQ proto=%x\n", card->name, | |
475be4d8 | 737 | wch->bch.nr, wch->bch.state); |
707b2ce6 KK |
738 | #ifdef ERROR_STATISTIC |
739 | wch->bch.err_rdo++; | |
740 | #endif | |
741 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | | |
475be4d8 | 742 | W_B_CMDR_RRST | W_B_CMDR_RACT); |
707b2ce6 KK |
743 | } |
744 | } | |
745 | if (stat & W_B_EXI_XFR) { | |
746 | if (!(stat & (W_B_EXI_RME | W_B_EXI_RMR))) { | |
747 | star = ReadW6692B(wch, W_B_STAR); | |
748 | pr_debug("%s: B%d star %02x\n", card->name, | |
475be4d8 | 749 | wch->bch.nr, star); |
707b2ce6 KK |
750 | } |
751 | if (star & W_B_STAR_XDOW) { | |
6d1ee48f KK |
752 | pr_warning("%s: B%d XDOW proto=%x\n", card->name, |
753 | wch->bch.nr, wch->bch.state); | |
707b2ce6 KK |
754 | #ifdef ERROR_STATISTIC |
755 | wch->bch.err_xdu++; | |
756 | #endif | |
757 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_XRST | | |
475be4d8 | 758 | W_B_CMDR_RACT); |
707b2ce6 KK |
759 | /* resend */ |
760 | if (wch->bch.tx_skb) { | |
761 | if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) | |
762 | wch->bch.tx_idx = 0; | |
763 | } | |
764 | } | |
765 | send_next(wch); | |
6d1ee48f | 766 | if (star & W_B_STAR_XDOW) |
707b2ce6 KK |
767 | return; /* handle XDOW only once */ |
768 | } | |
769 | if (stat & W_B_EXI_XDUN) { | |
6d1ee48f KK |
770 | pr_warning("%s: B%d XDUN proto=%x\n", card->name, |
771 | wch->bch.nr, wch->bch.state); | |
707b2ce6 KK |
772 | #ifdef ERROR_STATISTIC |
773 | wch->bch.err_xdu++; | |
774 | #endif | |
6d1ee48f | 775 | /* resend - no XRST needed */ |
707b2ce6 KK |
776 | if (wch->bch.tx_skb) { |
777 | if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) | |
778 | wch->bch.tx_idx = 0; | |
6d1ee48f KK |
779 | } else if (test_bit(FLG_FILLEMPTY, &wch->bch.Flags)) { |
780 | test_and_set_bit(FLG_TX_EMPTY, &wch->bch.Flags); | |
707b2ce6 KK |
781 | } |
782 | send_next(wch); | |
783 | } | |
784 | } | |
785 | ||
786 | static irqreturn_t | |
787 | w6692_irq(int intno, void *dev_id) | |
788 | { | |
789 | struct w6692_hw *card = dev_id; | |
790 | u8 ista; | |
791 | ||
792 | spin_lock(&card->lock); | |
793 | ista = ReadW6692(card, W_ISTA); | |
794 | if ((ista | card->imask) == card->imask) { | |
795 | /* possible a shared IRQ reqest */ | |
796 | spin_unlock(&card->lock); | |
797 | return IRQ_NONE; | |
798 | } | |
799 | card->irqcnt++; | |
800 | pr_debug("%s: ista %02x\n", card->name, ista); | |
801 | ista &= ~card->imask; | |
802 | if (ista & W_INT_B1_EXI) | |
803 | W6692B_interrupt(card, 0); | |
804 | if (ista & W_INT_B2_EXI) | |
805 | W6692B_interrupt(card, 1); | |
806 | if (ista & W_INT_D_RME) | |
807 | handle_rxD(card); | |
808 | if (ista & W_INT_D_RMR) | |
809 | W6692_empty_Dfifo(card, W_D_FIFO_THRESH); | |
810 | if (ista & W_INT_D_XFR) | |
811 | handle_txD(card); | |
812 | if (ista & W_INT_D_EXI) | |
813 | handle_statusD(card); | |
814 | if (ista & (W_INT_XINT0 | W_INT_XINT1)) /* XINT0/1 - never */ | |
815 | pr_debug("%s: W6692 spurious XINT!\n", card->name); | |
816 | /* End IRQ Handler */ | |
817 | spin_unlock(&card->lock); | |
818 | return IRQ_HANDLED; | |
819 | } | |
820 | ||
821 | static void | |
822 | dbusy_timer_handler(struct dchannel *dch) | |
823 | { | |
824 | struct w6692_hw *card = dch->hw; | |
825 | int rbch, star; | |
826 | u_long flags; | |
827 | ||
828 | if (test_bit(FLG_BUSY_TIMER, &dch->Flags)) { | |
829 | spin_lock_irqsave(&card->lock, flags); | |
830 | rbch = ReadW6692(card, W_D_RBCH); | |
831 | star = ReadW6692(card, W_D_STAR); | |
832 | pr_debug("%s: D-Channel Busy RBCH %02x STAR %02x\n", | |
475be4d8 | 833 | card->name, rbch, star); |
707b2ce6 KK |
834 | if (star & W_D_STAR_XBZ) /* D-Channel Busy */ |
835 | test_and_set_bit(FLG_L1_BUSY, &dch->Flags); | |
836 | else { | |
837 | /* discard frame; reset transceiver */ | |
838 | test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags); | |
839 | if (dch->tx_idx) | |
840 | dch->tx_idx = 0; | |
841 | else | |
842 | pr_info("%s: W6692 D-Channel Busy no tx_idx\n", | |
843 | card->name); | |
844 | /* Transmitter reset */ | |
845 | WriteW6692(card, W_D_CMDR, W_D_CMDR_XRST); | |
846 | } | |
847 | spin_unlock_irqrestore(&card->lock, flags); | |
848 | } | |
849 | } | |
850 | ||
569e937e | 851 | static void initW6692(struct w6692_hw *card) |
707b2ce6 KK |
852 | { |
853 | u8 val; | |
854 | ||
855 | card->dch.timer.function = (void *)dbusy_timer_handler; | |
856 | card->dch.timer.data = (u_long)&card->dch; | |
857 | init_timer(&card->dch.timer); | |
858 | w6692_mode(&card->bc[0], ISDN_P_NONE); | |
859 | w6692_mode(&card->bc[1], ISDN_P_NONE); | |
860 | WriteW6692(card, W_D_CTL, 0x00); | |
861 | disable_hwirq(card); | |
862 | WriteW6692(card, W_D_SAM, 0xff); | |
863 | WriteW6692(card, W_D_TAM, 0xff); | |
864 | WriteW6692(card, W_D_MODE, W_D_MODE_RACT); | |
865 | card->state = W_L1CMD_RST; | |
866 | ph_command(card, W_L1CMD_RST); | |
867 | ph_command(card, W_L1CMD_ECK); | |
868 | /* enable all IRQ but extern */ | |
869 | card->imask = 0x18; | |
870 | WriteW6692(card, W_D_EXIM, 0x00); | |
871 | WriteW6692B(&card->bc[0], W_B_EXIM, 0); | |
872 | WriteW6692B(&card->bc[1], W_B_EXIM, 0); | |
873 | /* Reset D-chan receiver and transmitter */ | |
874 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST | W_D_CMDR_XRST); | |
875 | /* Reset B-chan receiver and transmitter */ | |
876 | WriteW6692B(&card->bc[0], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST); | |
877 | WriteW6692B(&card->bc[1], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST); | |
878 | /* enable peripheral */ | |
879 | if (card->subtype == W6692_USR) { | |
880 | /* seems that USR implemented some power control features | |
881 | * Pin 79 is connected to the oscilator circuit so we | |
882 | * have to handle it here | |
883 | */ | |
884 | card->pctl = 0x80; | |
885 | card->xdata = 0; | |
886 | WriteW6692(card, W_PCTL, card->pctl); | |
887 | WriteW6692(card, W_XDATA, card->xdata); | |
888 | } else { | |
889 | card->pctl = W_PCTL_OE5 | W_PCTL_OE4 | W_PCTL_OE2 | | |
890 | W_PCTL_OE1 | W_PCTL_OE0; | |
891 | card->xaddr = 0x00;/* all sw off */ | |
892 | if (card->fmask & pots) | |
893 | card->xdata |= 0x06; /* POWER UP/ LED OFF / ALAW */ | |
894 | if (card->fmask & led) | |
895 | card->xdata |= 0x04; /* LED OFF */ | |
896 | if ((card->fmask & pots) || (card->fmask & led)) { | |
897 | WriteW6692(card, W_PCTL, card->pctl); | |
898 | WriteW6692(card, W_XADDR, card->xaddr); | |
899 | WriteW6692(card, W_XDATA, card->xdata); | |
900 | val = ReadW6692(card, W_XADDR); | |
901 | if (debug & DEBUG_HW) | |
902 | pr_notice("%s: W_XADDR=%02x\n", | |
475be4d8 | 903 | card->name, val); |
707b2ce6 KK |
904 | } |
905 | } | |
906 | } | |
907 | ||
908 | static void | |
909 | reset_w6692(struct w6692_hw *card) | |
910 | { | |
911 | WriteW6692(card, W_D_CTL, W_D_CTL_SRST); | |
912 | mdelay(10); | |
913 | WriteW6692(card, W_D_CTL, 0); | |
914 | } | |
915 | ||
916 | static int | |
917 | init_card(struct w6692_hw *card) | |
918 | { | |
919 | int cnt = 3; | |
920 | u_long flags; | |
921 | ||
922 | spin_lock_irqsave(&card->lock, flags); | |
923 | disable_hwirq(card); | |
924 | spin_unlock_irqrestore(&card->lock, flags); | |
925 | if (request_irq(card->irq, w6692_irq, IRQF_SHARED, card->name, card)) { | |
926 | pr_info("%s: couldn't get interrupt %d\n", card->name, | |
927 | card->irq); | |
928 | return -EIO; | |
929 | } | |
930 | while (cnt--) { | |
931 | spin_lock_irqsave(&card->lock, flags); | |
932 | initW6692(card); | |
933 | enable_hwirq(card); | |
934 | spin_unlock_irqrestore(&card->lock, flags); | |
935 | /* Timeout 10ms */ | |
936 | msleep_interruptible(10); | |
937 | if (debug & DEBUG_HW) | |
938 | pr_notice("%s: IRQ %d count %d\n", card->name, | |
475be4d8 | 939 | card->irq, card->irqcnt); |
707b2ce6 KK |
940 | if (!card->irqcnt) { |
941 | pr_info("%s: IRQ(%d) getting no IRQs during init %d\n", | |
942 | card->name, card->irq, 3 - cnt); | |
943 | reset_w6692(card); | |
944 | } else | |
945 | return 0; | |
946 | } | |
947 | free_irq(card->irq, card); | |
948 | return -EIO; | |
949 | } | |
950 | ||
951 | static int | |
952 | w6692_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb) | |
953 | { | |
954 | struct bchannel *bch = container_of(ch, struct bchannel, ch); | |
955 | struct w6692_ch *bc = container_of(bch, struct w6692_ch, bch); | |
956 | struct w6692_hw *card = bch->hw; | |
957 | int ret = -EINVAL; | |
958 | struct mISDNhead *hh = mISDN_HEAD_P(skb); | |
8bfddfbe | 959 | unsigned long flags; |
707b2ce6 KK |
960 | |
961 | switch (hh->prim) { | |
962 | case PH_DATA_REQ: | |
963 | spin_lock_irqsave(&card->lock, flags); | |
964 | ret = bchannel_senddata(bch, skb); | |
965 | if (ret > 0) { /* direct TX */ | |
707b2ce6 KK |
966 | ret = 0; |
967 | W6692_fill_Bfifo(bc); | |
8bfddfbe KK |
968 | } |
969 | spin_unlock_irqrestore(&card->lock, flags); | |
707b2ce6 KK |
970 | return ret; |
971 | case PH_ACTIVATE_REQ: | |
972 | spin_lock_irqsave(&card->lock, flags); | |
973 | if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags)) | |
974 | ret = w6692_mode(bc, ch->protocol); | |
975 | else | |
976 | ret = 0; | |
977 | spin_unlock_irqrestore(&card->lock, flags); | |
978 | if (!ret) | |
979 | _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0, | |
475be4d8 | 980 | NULL, GFP_KERNEL); |
707b2ce6 KK |
981 | break; |
982 | case PH_DEACTIVATE_REQ: | |
983 | spin_lock_irqsave(&card->lock, flags); | |
984 | mISDN_clear_bchannel(bch); | |
985 | w6692_mode(bc, ISDN_P_NONE); | |
986 | spin_unlock_irqrestore(&card->lock, flags); | |
987 | _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0, | |
475be4d8 | 988 | NULL, GFP_KERNEL); |
707b2ce6 KK |
989 | ret = 0; |
990 | break; | |
991 | default: | |
992 | pr_info("%s: %s unknown prim(%x,%x)\n", | |
993 | card->name, __func__, hh->prim, hh->id); | |
994 | ret = -EINVAL; | |
995 | } | |
996 | if (!ret) | |
997 | dev_kfree_skb(skb); | |
998 | return ret; | |
999 | } | |
1000 | ||
1001 | static int | |
1002 | channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq) | |
1003 | { | |
034005a0 | 1004 | return mISDN_ctrl_bchannel(bch, cq); |
707b2ce6 KK |
1005 | } |
1006 | ||
1007 | static int | |
1008 | open_bchannel(struct w6692_hw *card, struct channel_req *rq) | |
1009 | { | |
1010 | struct bchannel *bch; | |
1011 | ||
819a1008 | 1012 | if (rq->adr.channel == 0 || rq->adr.channel > 2) |
707b2ce6 KK |
1013 | return -EINVAL; |
1014 | if (rq->protocol == ISDN_P_NONE) | |
1015 | return -EINVAL; | |
1016 | bch = &card->bc[rq->adr.channel - 1].bch; | |
1017 | if (test_and_set_bit(FLG_OPEN, &bch->Flags)) | |
1018 | return -EBUSY; /* b-channel can be only open once */ | |
707b2ce6 KK |
1019 | bch->ch.protocol = rq->protocol; |
1020 | rq->ch = &bch->ch; | |
1021 | return 0; | |
1022 | } | |
1023 | ||
1024 | static int | |
1025 | channel_ctrl(struct w6692_hw *card, struct mISDN_ctrl_req *cq) | |
1026 | { | |
1027 | int ret = 0; | |
1028 | ||
1029 | switch (cq->op) { | |
1030 | case MISDN_CTRL_GETOP: | |
c626c127 KK |
1031 | cq->op = MISDN_CTRL_L1_TIMER3; |
1032 | break; | |
1033 | case MISDN_CTRL_L1_TIMER3: | |
1034 | ret = l1_event(card->dch.l1, HW_TIMER3_VALUE | (cq->p1 & 0xff)); | |
707b2ce6 KK |
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); | |
4b921eda | 1057 | cancel_work_sync(&bch->workq); |
1368112c | 1058 | spin_lock_irqsave(&card->lock, flags); |
4b921eda | 1059 | mISDN_clear_bchannel(bch); |
1368112c KK |
1060 | w6692_mode(bc, ISDN_P_NONE); |
1061 | spin_unlock_irqrestore(&card->lock, flags); | |
707b2ce6 KK |
1062 | ch->protocol = ISDN_P_NONE; |
1063 | ch->peer = NULL; | |
1064 | module_put(THIS_MODULE); | |
1065 | ret = 0; | |
1066 | break; | |
1067 | case CONTROL_CHANNEL: | |
1068 | ret = channel_bctrl(bch, arg); | |
1069 | break; | |
1070 | default: | |
1071 | pr_info("%s: %s unknown prim(%x)\n", | |
1072 | card->name, __func__, cmd); | |
1073 | } | |
1074 | return ret; | |
1075 | } | |
1076 | ||
1077 | static int | |
1078 | w6692_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb) | |
1079 | { | |
1080 | struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D); | |
1081 | struct dchannel *dch = container_of(dev, struct dchannel, dev); | |
1082 | struct w6692_hw *card = container_of(dch, struct w6692_hw, dch); | |
1083 | int ret = -EINVAL; | |
1084 | struct mISDNhead *hh = mISDN_HEAD_P(skb); | |
1085 | u32 id; | |
1086 | u_long flags; | |
1087 | ||
1088 | switch (hh->prim) { | |
1089 | case PH_DATA_REQ: | |
1090 | spin_lock_irqsave(&card->lock, flags); | |
1091 | ret = dchannel_senddata(dch, skb); | |
1092 | if (ret > 0) { /* direct TX */ | |
1093 | id = hh->id; /* skb can be freed */ | |
1094 | W6692_fill_Dfifo(card); | |
1095 | ret = 0; | |
1096 | spin_unlock_irqrestore(&card->lock, flags); | |
1097 | queue_ch_frame(ch, PH_DATA_CNF, id, NULL); | |
1098 | } else | |
1099 | spin_unlock_irqrestore(&card->lock, flags); | |
1100 | return ret; | |
1101 | case PH_ACTIVATE_REQ: | |
1102 | ret = l1_event(dch->l1, hh->prim); | |
1103 | break; | |
1104 | case PH_DEACTIVATE_REQ: | |
1105 | test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags); | |
1106 | ret = l1_event(dch->l1, hh->prim); | |
1107 | break; | |
1108 | } | |
1109 | ||
1110 | if (!ret) | |
1111 | dev_kfree_skb(skb); | |
1112 | return ret; | |
1113 | } | |
1114 | ||
1115 | static int | |
1116 | w6692_l1callback(struct dchannel *dch, u32 cmd) | |
1117 | { | |
1118 | struct w6692_hw *card = container_of(dch, struct w6692_hw, dch); | |
1119 | u_long flags; | |
1120 | ||
1121 | pr_debug("%s: cmd(%x) state(%02x)\n", card->name, cmd, card->state); | |
1122 | switch (cmd) { | |
1123 | case INFO3_P8: | |
1124 | spin_lock_irqsave(&card->lock, flags); | |
1125 | ph_command(card, W_L1CMD_AR8); | |
1126 | spin_unlock_irqrestore(&card->lock, flags); | |
1127 | break; | |
1128 | case INFO3_P10: | |
1129 | spin_lock_irqsave(&card->lock, flags); | |
1130 | ph_command(card, W_L1CMD_AR10); | |
1131 | spin_unlock_irqrestore(&card->lock, flags); | |
1132 | break; | |
1133 | case HW_RESET_REQ: | |
1134 | spin_lock_irqsave(&card->lock, flags); | |
1135 | if (card->state != W_L1IND_DRD) | |
1136 | ph_command(card, W_L1CMD_RST); | |
1137 | ph_command(card, W_L1CMD_ECK); | |
1138 | spin_unlock_irqrestore(&card->lock, flags); | |
1139 | break; | |
1140 | case HW_DEACT_REQ: | |
1141 | skb_queue_purge(&dch->squeue); | |
1142 | if (dch->tx_skb) { | |
1143 | dev_kfree_skb(dch->tx_skb); | |
1144 | dch->tx_skb = NULL; | |
1145 | } | |
1146 | dch->tx_idx = 0; | |
1147 | if (dch->rx_skb) { | |
1148 | dev_kfree_skb(dch->rx_skb); | |
1149 | dch->rx_skb = NULL; | |
1150 | } | |
1151 | test_and_clear_bit(FLG_TX_BUSY, &dch->Flags); | |
1152 | if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags)) | |
1153 | del_timer(&dch->timer); | |
1154 | break; | |
1155 | case HW_POWERUP_REQ: | |
1156 | spin_lock_irqsave(&card->lock, flags); | |
1157 | ph_command(card, W_L1CMD_ECK); | |
1158 | spin_unlock_irqrestore(&card->lock, flags); | |
1159 | break; | |
1160 | case PH_ACTIVATE_IND: | |
1161 | test_and_set_bit(FLG_ACTIVE, &dch->Flags); | |
1162 | _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL, | |
475be4d8 | 1163 | GFP_ATOMIC); |
707b2ce6 KK |
1164 | break; |
1165 | case PH_DEACTIVATE_IND: | |
1166 | test_and_clear_bit(FLG_ACTIVE, &dch->Flags); | |
1167 | _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL, | |
475be4d8 | 1168 | GFP_ATOMIC); |
707b2ce6 KK |
1169 | break; |
1170 | default: | |
1171 | pr_debug("%s: %s unknown command %x\n", card->name, | |
475be4d8 | 1172 | __func__, cmd); |
707b2ce6 KK |
1173 | return -1; |
1174 | } | |
1175 | return 0; | |
1176 | } | |
1177 | ||
1178 | static int | |
3e7a8716 | 1179 | open_dchannel(struct w6692_hw *card, struct channel_req *rq, void *caller) |
707b2ce6 KK |
1180 | { |
1181 | pr_debug("%s: %s dev(%d) open from %p\n", card->name, __func__, | |
3e7a8716 | 1182 | card->dch.dev.id, caller); |
707b2ce6 KK |
1183 | if (rq->protocol != ISDN_P_TE_S0) |
1184 | return -EINVAL; | |
1185 | if (rq->adr.channel == 1) | |
1186 | /* E-Channel not supported */ | |
1187 | return -EINVAL; | |
1188 | rq->ch = &card->dch.dev.D; | |
1189 | rq->ch->protocol = rq->protocol; | |
1190 | if (card->dch.state == 7) | |
1191 | _queue_data(rq->ch, PH_ACTIVATE_IND, MISDN_ID_ANY, | |
475be4d8 | 1192 | 0, NULL, GFP_KERNEL); |
707b2ce6 KK |
1193 | return 0; |
1194 | } | |
1195 | ||
1196 | static int | |
1197 | w6692_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg) | |
1198 | { | |
1199 | struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D); | |
1200 | struct dchannel *dch = container_of(dev, struct dchannel, dev); | |
1201 | struct w6692_hw *card = container_of(dch, struct w6692_hw, dch); | |
1202 | struct channel_req *rq; | |
1203 | int err = 0; | |
1204 | ||
1205 | pr_debug("%s: DCTRL: %x %p\n", card->name, cmd, arg); | |
1206 | switch (cmd) { | |
1207 | case OPEN_CHANNEL: | |
1208 | rq = arg; | |
1209 | if (rq->protocol == ISDN_P_TE_S0) | |
3e7a8716 | 1210 | err = open_dchannel(card, rq, __builtin_return_address(0)); |
707b2ce6 KK |
1211 | else |
1212 | err = open_bchannel(card, rq); | |
1213 | if (err) | |
1214 | break; | |
1215 | if (!try_module_get(THIS_MODULE)) | |
1216 | pr_info("%s: cannot get module\n", card->name); | |
1217 | break; | |
1218 | case CLOSE_CHANNEL: | |
1219 | pr_debug("%s: dev(%d) close from %p\n", card->name, | |
475be4d8 | 1220 | dch->dev.id, __builtin_return_address(0)); |
707b2ce6 KK |
1221 | module_put(THIS_MODULE); |
1222 | break; | |
1223 | case CONTROL_CHANNEL: | |
1224 | err = channel_ctrl(card, arg); | |
1225 | break; | |
1226 | default: | |
1227 | pr_debug("%s: unknown DCTRL command %x\n", card->name, cmd); | |
1228 | return -EINVAL; | |
1229 | } | |
1230 | return err; | |
1231 | } | |
1232 | ||
70034918 | 1233 | static int |
707b2ce6 KK |
1234 | setup_w6692(struct w6692_hw *card) |
1235 | { | |
1236 | u32 val; | |
1237 | ||
1238 | if (!request_region(card->addr, 256, card->name)) { | |
1239 | pr_info("%s: config port %x-%x already in use\n", card->name, | |
475be4d8 | 1240 | card->addr, card->addr + 255); |
707b2ce6 KK |
1241 | return -EIO; |
1242 | } | |
1243 | W6692Version(card); | |
1244 | card->bc[0].addr = card->addr; | |
1245 | card->bc[1].addr = card->addr + 0x40; | |
1246 | val = ReadW6692(card, W_ISTA); | |
1247 | if (debug & DEBUG_HW) | |
1248 | pr_notice("%s ISTA=%02x\n", card->name, val); | |
1249 | val = ReadW6692(card, W_IMASK); | |
1250 | if (debug & DEBUG_HW) | |
1251 | pr_notice("%s IMASK=%02x\n", card->name, val); | |
1252 | val = ReadW6692(card, W_D_EXIR); | |
1253 | if (debug & DEBUG_HW) | |
1254 | pr_notice("%s D_EXIR=%02x\n", card->name, val); | |
1255 | val = ReadW6692(card, W_D_EXIM); | |
1256 | if (debug & DEBUG_HW) | |
1257 | pr_notice("%s D_EXIM=%02x\n", card->name, val); | |
1258 | val = ReadW6692(card, W_D_RSTA); | |
1259 | if (debug & DEBUG_HW) | |
1260 | pr_notice("%s D_RSTA=%02x\n", card->name, val); | |
1261 | return 0; | |
1262 | } | |
1263 | ||
1264 | static void | |
1265 | release_card(struct w6692_hw *card) | |
1266 | { | |
1267 | u_long flags; | |
1268 | ||
1269 | spin_lock_irqsave(&card->lock, flags); | |
1270 | disable_hwirq(card); | |
1271 | w6692_mode(&card->bc[0], ISDN_P_NONE); | |
1272 | w6692_mode(&card->bc[1], ISDN_P_NONE); | |
1273 | if ((card->fmask & led) || card->subtype == W6692_USR) { | |
1274 | card->xdata |= 0x04; /* LED OFF */ | |
1275 | WriteW6692(card, W_XDATA, card->xdata); | |
1276 | } | |
1277 | spin_unlock_irqrestore(&card->lock, flags); | |
1278 | free_irq(card->irq, card); | |
1279 | l1_event(card->dch.l1, CLOSE_CHANNEL); | |
1280 | mISDN_unregister_device(&card->dch.dev); | |
1281 | release_region(card->addr, 256); | |
1282 | mISDN_freebchannel(&card->bc[1].bch); | |
1283 | mISDN_freebchannel(&card->bc[0].bch); | |
1284 | mISDN_freedchannel(&card->dch); | |
1285 | write_lock_irqsave(&card_lock, flags); | |
1286 | list_del(&card->list); | |
1287 | write_unlock_irqrestore(&card_lock, flags); | |
1288 | pci_disable_device(card->pdev); | |
1289 | pci_set_drvdata(card->pdev, NULL); | |
1290 | kfree(card); | |
1291 | } | |
1292 | ||
1293 | static int | |
1294 | setup_instance(struct w6692_hw *card) | |
1295 | { | |
1296 | int i, err; | |
1297 | u_long flags; | |
1298 | ||
1299 | snprintf(card->name, MISDN_MAX_IDLEN - 1, "w6692.%d", w6692_cnt + 1); | |
1300 | write_lock_irqsave(&card_lock, flags); | |
1301 | list_add_tail(&card->list, &Cards); | |
1302 | write_unlock_irqrestore(&card_lock, flags); | |
1303 | card->fmask = (1 << w6692_cnt); | |
1304 | _set_debug(card); | |
1305 | spin_lock_init(&card->lock); | |
1306 | mISDN_initdchannel(&card->dch, MAX_DFRAME_LEN_L1, W6692_ph_bh); | |
1307 | card->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0); | |
1308 | card->dch.dev.D.send = w6692_l2l1D; | |
1309 | card->dch.dev.D.ctrl = w6692_dctrl; | |
1310 | card->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) | | |
1311 | (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK)); | |
1312 | card->dch.hw = card; | |
1313 | card->dch.dev.nrbchan = 2; | |
1314 | for (i = 0; i < 2; i++) { | |
034005a0 KK |
1315 | mISDN_initbchannel(&card->bc[i].bch, MAX_DATA_MEM, |
1316 | W_B_FIFO_THRESH); | |
707b2ce6 KK |
1317 | card->bc[i].bch.hw = card; |
1318 | card->bc[i].bch.nr = i + 1; | |
1319 | card->bc[i].bch.ch.nr = i + 1; | |
1320 | card->bc[i].bch.ch.send = w6692_l2l1B; | |
1321 | card->bc[i].bch.ch.ctrl = w6692_bctrl; | |
1322 | set_channelmap(i + 1, card->dch.dev.channelmap); | |
1323 | list_add(&card->bc[i].bch.ch.list, &card->dch.dev.bchannels); | |
1324 | } | |
1325 | err = setup_w6692(card); | |
1326 | if (err) | |
1327 | goto error_setup; | |
1328 | err = mISDN_register_device(&card->dch.dev, &card->pdev->dev, | |
475be4d8 | 1329 | card->name); |
707b2ce6 KK |
1330 | if (err) |
1331 | goto error_reg; | |
1332 | err = init_card(card); | |
1333 | if (err) | |
1334 | goto error_init; | |
1335 | err = create_l1(&card->dch, w6692_l1callback); | |
1336 | if (!err) { | |
1337 | w6692_cnt++; | |
1338 | pr_notice("W6692 %d cards installed\n", w6692_cnt); | |
1339 | return 0; | |
1340 | } | |
1341 | ||
1342 | free_irq(card->irq, card); | |
1343 | error_init: | |
1344 | mISDN_unregister_device(&card->dch.dev); | |
1345 | error_reg: | |
1346 | release_region(card->addr, 256); | |
1347 | error_setup: | |
1348 | mISDN_freebchannel(&card->bc[1].bch); | |
1349 | mISDN_freebchannel(&card->bc[0].bch); | |
1350 | mISDN_freedchannel(&card->dch); | |
1351 | write_lock_irqsave(&card_lock, flags); | |
1352 | list_del(&card->list); | |
1353 | write_unlock_irqrestore(&card_lock, flags); | |
1354 | kfree(card); | |
1355 | return err; | |
1356 | } | |
1357 | ||
ed5a84cd | 1358 | static int |
707b2ce6 KK |
1359 | w6692_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
1360 | { | |
1361 | int err = -ENOMEM; | |
1362 | struct w6692_hw *card; | |
1363 | struct w6692map *m = (struct w6692map *)ent->driver_data; | |
1364 | ||
1365 | card = kzalloc(sizeof(struct w6692_hw), GFP_KERNEL); | |
1366 | if (!card) { | |
1367 | pr_info("No kmem for w6692 card\n"); | |
1368 | return err; | |
1369 | } | |
1370 | card->pdev = pdev; | |
1371 | card->subtype = m->subtype; | |
1372 | err = pci_enable_device(pdev); | |
1373 | if (err) { | |
1374 | kfree(card); | |
1375 | return err; | |
1376 | } | |
1377 | ||
1378 | printk(KERN_INFO "mISDN_w6692: found adapter %s at %s\n", | |
1379 | m->name, pci_name(pdev)); | |
1380 | ||
1381 | card->addr = pci_resource_start(pdev, 1); | |
1382 | card->irq = pdev->irq; | |
1383 | pci_set_drvdata(pdev, card); | |
1384 | err = setup_instance(card); | |
1385 | if (err) | |
1386 | pci_set_drvdata(pdev, NULL); | |
1387 | return err; | |
1388 | } | |
1389 | ||
ed5a84cd | 1390 | static void |
707b2ce6 KK |
1391 | w6692_remove_pci(struct pci_dev *pdev) |
1392 | { | |
1393 | struct w6692_hw *card = pci_get_drvdata(pdev); | |
1394 | ||
1395 | if (card) | |
1396 | release_card(card); | |
1397 | else | |
1398 | if (debug) | |
698f9315 | 1399 | pr_notice("%s: drvdata already removed\n", __func__); |
707b2ce6 KK |
1400 | } |
1401 | ||
1402 | static struct pci_device_id w6692_ids[] = { | |
1403 | { PCI_VENDOR_ID_DYNALINK, PCI_DEVICE_ID_DYNALINK_IS64PH, | |
1404 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[0]}, | |
1405 | { PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692, | |
1406 | PCI_VENDOR_ID_USR, PCI_DEVICE_ID_USR_6692, 0, 0, | |
1407 | (ulong)&w6692_map[2]}, | |
1408 | { PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692, | |
1409 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[1]}, | |
1410 | { } | |
1411 | }; | |
1412 | MODULE_DEVICE_TABLE(pci, w6692_ids); | |
1413 | ||
1414 | static struct pci_driver w6692_driver = { | |
1415 | .name = "w6692", | |
1416 | .probe = w6692_probe, | |
ed5a84cd | 1417 | .remove = w6692_remove_pci, |
707b2ce6 KK |
1418 | .id_table = w6692_ids, |
1419 | }; | |
1420 | ||
1421 | static int __init w6692_init(void) | |
1422 | { | |
1423 | int err; | |
1424 | ||
1425 | pr_notice("Winbond W6692 PCI driver Rev. %s\n", W6692_REV); | |
1426 | ||
1427 | err = pci_register_driver(&w6692_driver); | |
1428 | return err; | |
1429 | } | |
1430 | ||
1431 | static void __exit w6692_cleanup(void) | |
1432 | { | |
1433 | pci_unregister_driver(&w6692_driver); | |
1434 | } | |
1435 | ||
1436 | module_init(w6692_init); | |
1437 | module_exit(w6692_cleanup); |