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82c29810 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
707b2ce6 KK |
2 | /* |
3 | * w6692.c mISDN driver for Winbond w6692 based cards | |
4 | * | |
5 | * Author Karsten Keil <kkeil@suse.de> | |
6 | * based on the w6692 I4L driver from Petr Novak <petr.novak@i.cz> | |
7 | * | |
8 | * Copyright 2009 by Karsten Keil <keil@isdn4linux.de> | |
707b2ce6 KK |
9 | */ |
10 | ||
a6b7a407 | 11 | #include <linux/interrupt.h> |
707b2ce6 KK |
12 | #include <linux/module.h> |
13 | #include <linux/pci.h> | |
14 | #include <linux/delay.h> | |
15 | #include <linux/mISDNhw.h> | |
5a0e3ad6 | 16 | #include <linux/slab.h> |
707b2ce6 KK |
17 | #include "w6692.h" |
18 | ||
19 | #define W6692_REV "2.0" | |
20 | ||
21 | #define DBUSY_TIMER_VALUE 80 | |
22 | ||
23 | enum { | |
24 | W6692_ASUS, | |
25 | W6692_WINBOND, | |
26 | W6692_USR | |
27 | }; | |
28 | ||
29 | /* private data in the PCI devices list */ | |
30 | struct w6692map { | |
31 | u_int subtype; | |
32 | char *name; | |
33 | }; | |
34 | ||
35 | static const struct w6692map w6692_map[] = | |
36 | { | |
37 | {W6692_ASUS, "Dynalink/AsusCom IS64PH"}, | |
38 | {W6692_WINBOND, "Winbond W6692"}, | |
39 | {W6692_USR, "USR W6692"} | |
40 | }; | |
41 | ||
707b2ce6 | 42 | #define PCI_DEVICE_ID_USR_6692 0x3409 |
707b2ce6 KK |
43 | |
44 | struct w6692_ch { | |
45 | struct bchannel bch; | |
46 | u32 addr; | |
47 | struct timer_list timer; | |
48 | u8 b_mode; | |
49 | }; | |
50 | ||
51 | struct w6692_hw { | |
52 | struct list_head list; | |
53 | struct pci_dev *pdev; | |
54 | char name[MISDN_MAX_IDLEN]; | |
55 | u32 irq; | |
56 | u32 irqcnt; | |
57 | u32 addr; | |
58 | u32 fmask; /* feature mask - bit set per card nr */ | |
59 | int subtype; | |
60 | spinlock_t lock; /* hw lock */ | |
61 | u8 imask; | |
62 | u8 pctl; | |
63 | u8 xaddr; | |
64 | u8 xdata; | |
65 | u8 state; | |
66 | struct w6692_ch bc[2]; | |
67 | struct dchannel dch; | |
68 | char log[64]; | |
69 | }; | |
70 | ||
71 | static LIST_HEAD(Cards); | |
72 | static DEFINE_RWLOCK(card_lock); /* protect Cards */ | |
73 | ||
74 | static int w6692_cnt; | |
75 | static int debug; | |
76 | static u32 led; | |
77 | static u32 pots; | |
78 | ||
79 | static void | |
80 | _set_debug(struct w6692_hw *card) | |
81 | { | |
82 | card->dch.debug = debug; | |
83 | card->bc[0].bch.debug = debug; | |
84 | card->bc[1].bch.debug = debug; | |
85 | } | |
86 | ||
87 | static int | |
e4dca7b7 | 88 | set_debug(const char *val, const struct kernel_param *kp) |
707b2ce6 KK |
89 | { |
90 | int ret; | |
91 | struct w6692_hw *card; | |
92 | ||
93 | ret = param_set_uint(val, kp); | |
94 | if (!ret) { | |
95 | read_lock(&card_lock); | |
96 | list_for_each_entry(card, &Cards, list) | |
97 | _set_debug(card); | |
98 | read_unlock(&card_lock); | |
99 | } | |
100 | return ret; | |
101 | } | |
102 | ||
103 | MODULE_AUTHOR("Karsten Keil"); | |
104 | MODULE_LICENSE("GPL v2"); | |
105 | MODULE_VERSION(W6692_REV); | |
106 | module_param_call(debug, set_debug, param_get_uint, &debug, S_IRUGO | S_IWUSR); | |
107 | MODULE_PARM_DESC(debug, "W6692 debug mask"); | |
108 | module_param(led, uint, S_IRUGO | S_IWUSR); | |
109 | MODULE_PARM_DESC(led, "W6692 LED support bitmask (one bit per card)"); | |
110 | module_param(pots, uint, S_IRUGO | S_IWUSR); | |
111 | MODULE_PARM_DESC(pots, "W6692 POTS support bitmask (one bit per card)"); | |
112 | ||
113 | static inline u8 | |
114 | ReadW6692(struct w6692_hw *card, u8 offset) | |
115 | { | |
116 | return inb(card->addr + offset); | |
117 | } | |
118 | ||
119 | static inline void | |
120 | WriteW6692(struct w6692_hw *card, u8 offset, u8 value) | |
121 | { | |
122 | outb(value, card->addr + offset); | |
123 | } | |
124 | ||
125 | static inline u8 | |
126 | ReadW6692B(struct w6692_ch *bc, u8 offset) | |
127 | { | |
128 | return inb(bc->addr + offset); | |
129 | } | |
130 | ||
131 | static inline void | |
132 | WriteW6692B(struct w6692_ch *bc, u8 offset, u8 value) | |
133 | { | |
134 | outb(value, bc->addr + offset); | |
135 | } | |
136 | ||
137 | static void | |
138 | enable_hwirq(struct w6692_hw *card) | |
139 | { | |
140 | WriteW6692(card, W_IMASK, card->imask); | |
141 | } | |
142 | ||
143 | static void | |
144 | disable_hwirq(struct w6692_hw *card) | |
145 | { | |
146 | WriteW6692(card, W_IMASK, 0xff); | |
147 | } | |
148 | ||
149 | static const char *W6692Ver[] = {"V00", "V01", "V10", "V11"}; | |
150 | ||
151 | static void | |
152 | W6692Version(struct w6692_hw *card) | |
153 | { | |
154 | int val; | |
155 | ||
156 | val = ReadW6692(card, W_D_RBCH); | |
157 | pr_notice("%s: Winbond W6692 version: %s\n", card->name, | |
475be4d8 | 158 | W6692Ver[(val >> 6) & 3]); |
707b2ce6 KK |
159 | } |
160 | ||
161 | static void | |
162 | w6692_led_handler(struct w6692_hw *card, int on) | |
163 | { | |
164 | if ((!(card->fmask & led)) || card->subtype == W6692_USR) | |
165 | return; | |
166 | if (on) { | |
167 | card->xdata &= 0xfb; /* LED ON */ | |
168 | WriteW6692(card, W_XDATA, card->xdata); | |
169 | } else { | |
170 | card->xdata |= 0x04; /* LED OFF */ | |
171 | WriteW6692(card, W_XDATA, card->xdata); | |
172 | } | |
173 | } | |
174 | ||
175 | static void | |
176 | ph_command(struct w6692_hw *card, u8 cmd) | |
177 | { | |
178 | pr_debug("%s: ph_command %x\n", card->name, cmd); | |
179 | WriteW6692(card, W_CIX, cmd); | |
180 | } | |
181 | ||
182 | static void | |
183 | W6692_new_ph(struct w6692_hw *card) | |
184 | { | |
185 | if (card->state == W_L1CMD_RST) | |
186 | ph_command(card, W_L1CMD_DRC); | |
187 | schedule_event(&card->dch, FLG_PHCHANGE); | |
188 | } | |
189 | ||
190 | static void | |
191 | W6692_ph_bh(struct dchannel *dch) | |
192 | { | |
193 | struct w6692_hw *card = dch->hw; | |
194 | ||
195 | switch (card->state) { | |
196 | case W_L1CMD_RST: | |
197 | dch->state = 0; | |
198 | l1_event(dch->l1, HW_RESET_IND); | |
199 | break; | |
200 | case W_L1IND_CD: | |
201 | dch->state = 3; | |
202 | l1_event(dch->l1, HW_DEACT_CNF); | |
203 | break; | |
204 | case W_L1IND_DRD: | |
205 | dch->state = 3; | |
206 | l1_event(dch->l1, HW_DEACT_IND); | |
207 | break; | |
208 | case W_L1IND_CE: | |
209 | dch->state = 4; | |
210 | l1_event(dch->l1, HW_POWERUP_IND); | |
211 | break; | |
212 | case W_L1IND_LD: | |
213 | if (dch->state <= 5) { | |
214 | dch->state = 5; | |
215 | l1_event(dch->l1, ANYSIGNAL); | |
216 | } else { | |
217 | dch->state = 8; | |
218 | l1_event(dch->l1, LOSTFRAMING); | |
219 | } | |
220 | break; | |
221 | case W_L1IND_ARD: | |
222 | dch->state = 6; | |
223 | l1_event(dch->l1, INFO2); | |
224 | break; | |
225 | case W_L1IND_AI8: | |
226 | dch->state = 7; | |
227 | l1_event(dch->l1, INFO4_P8); | |
228 | break; | |
229 | case W_L1IND_AI10: | |
230 | dch->state = 7; | |
231 | l1_event(dch->l1, INFO4_P10); | |
232 | break; | |
233 | default: | |
234 | pr_debug("%s: TE unknown state %02x dch state %02x\n", | |
475be4d8 | 235 | card->name, card->state, dch->state); |
707b2ce6 KK |
236 | break; |
237 | } | |
238 | pr_debug("%s: TE newstate %02x\n", card->name, dch->state); | |
239 | } | |
240 | ||
241 | static void | |
242 | W6692_empty_Dfifo(struct w6692_hw *card, int count) | |
243 | { | |
244 | struct dchannel *dch = &card->dch; | |
245 | u8 *ptr; | |
246 | ||
247 | pr_debug("%s: empty_Dfifo %d\n", card->name, count); | |
248 | if (!dch->rx_skb) { | |
249 | dch->rx_skb = mI_alloc_skb(card->dch.maxlen, GFP_ATOMIC); | |
250 | if (!dch->rx_skb) { | |
251 | pr_info("%s: D receive out of memory\n", card->name); | |
252 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK); | |
253 | return; | |
254 | } | |
255 | } | |
256 | if ((dch->rx_skb->len + count) >= dch->maxlen) { | |
257 | pr_debug("%s: empty_Dfifo overrun %d\n", card->name, | |
475be4d8 | 258 | dch->rx_skb->len + count); |
707b2ce6 KK |
259 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK); |
260 | return; | |
261 | } | |
262 | ptr = skb_put(dch->rx_skb, count); | |
263 | insb(card->addr + W_D_RFIFO, ptr, count); | |
264 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK); | |
265 | if (debug & DEBUG_HW_DFIFO) { | |
266 | snprintf(card->log, 63, "D-recv %s %d ", | |
475be4d8 | 267 | card->name, count); |
707b2ce6 KK |
268 | print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count); |
269 | } | |
270 | } | |
271 | ||
272 | static void | |
273 | W6692_fill_Dfifo(struct w6692_hw *card) | |
274 | { | |
275 | struct dchannel *dch = &card->dch; | |
276 | int count; | |
277 | u8 *ptr; | |
278 | u8 cmd = W_D_CMDR_XMS; | |
279 | ||
280 | pr_debug("%s: fill_Dfifo\n", card->name); | |
281 | if (!dch->tx_skb) | |
282 | return; | |
283 | count = dch->tx_skb->len - dch->tx_idx; | |
284 | if (count <= 0) | |
285 | return; | |
286 | if (count > W_D_FIFO_THRESH) | |
287 | count = W_D_FIFO_THRESH; | |
288 | else | |
289 | cmd |= W_D_CMDR_XME; | |
290 | ptr = dch->tx_skb->data + dch->tx_idx; | |
291 | dch->tx_idx += count; | |
292 | outsb(card->addr + W_D_XFIFO, ptr, count); | |
293 | WriteW6692(card, W_D_CMDR, cmd); | |
294 | if (test_and_set_bit(FLG_BUSY_TIMER, &dch->Flags)) { | |
295 | pr_debug("%s: fill_Dfifo dbusytimer running\n", card->name); | |
296 | del_timer(&dch->timer); | |
297 | } | |
475be4d8 | 298 | dch->timer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ) / 1000); |
707b2ce6 KK |
299 | add_timer(&dch->timer); |
300 | if (debug & DEBUG_HW_DFIFO) { | |
301 | snprintf(card->log, 63, "D-send %s %d ", | |
475be4d8 | 302 | card->name, count); |
707b2ce6 KK |
303 | print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count); |
304 | } | |
305 | } | |
306 | ||
307 | static void | |
308 | d_retransmit(struct w6692_hw *card) | |
309 | { | |
310 | struct dchannel *dch = &card->dch; | |
311 | ||
312 | if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags)) | |
313 | del_timer(&dch->timer); | |
314 | #ifdef FIXME | |
315 | if (test_and_clear_bit(FLG_L1_BUSY, &dch->Flags)) | |
316 | dchannel_sched_event(dch, D_CLEARBUSY); | |
317 | #endif | |
318 | if (test_bit(FLG_TX_BUSY, &dch->Flags)) { | |
319 | /* Restart frame */ | |
320 | dch->tx_idx = 0; | |
321 | W6692_fill_Dfifo(card); | |
322 | } else if (dch->tx_skb) { /* should not happen */ | |
323 | pr_info("%s: %s without TX_BUSY\n", card->name, __func__); | |
324 | test_and_set_bit(FLG_TX_BUSY, &dch->Flags); | |
325 | dch->tx_idx = 0; | |
326 | W6692_fill_Dfifo(card); | |
327 | } else { | |
328 | pr_info("%s: XDU no TX_BUSY\n", card->name); | |
329 | if (get_next_dframe(dch)) | |
330 | W6692_fill_Dfifo(card); | |
331 | } | |
332 | } | |
333 | ||
334 | static void | |
335 | handle_rxD(struct w6692_hw *card) { | |
336 | u8 stat; | |
337 | int count; | |
338 | ||
339 | stat = ReadW6692(card, W_D_RSTA); | |
340 | if (stat & (W_D_RSTA_RDOV | W_D_RSTA_CRCE | W_D_RSTA_RMB)) { | |
341 | if (stat & W_D_RSTA_RDOV) { | |
342 | pr_debug("%s: D-channel RDOV\n", card->name); | |
343 | #ifdef ERROR_STATISTIC | |
344 | card->dch.err_rx++; | |
345 | #endif | |
346 | } | |
347 | if (stat & W_D_RSTA_CRCE) { | |
348 | pr_debug("%s: D-channel CRC error\n", card->name); | |
349 | #ifdef ERROR_STATISTIC | |
350 | card->dch.err_crc++; | |
351 | #endif | |
352 | } | |
353 | if (stat & W_D_RSTA_RMB) { | |
354 | pr_debug("%s: D-channel ABORT\n", card->name); | |
355 | #ifdef ERROR_STATISTIC | |
356 | card->dch.err_rx++; | |
357 | #endif | |
358 | } | |
0f817a5e | 359 | dev_kfree_skb(card->dch.rx_skb); |
707b2ce6 KK |
360 | card->dch.rx_skb = NULL; |
361 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK | W_D_CMDR_RRST); | |
362 | } else { | |
363 | count = ReadW6692(card, W_D_RBCL) & (W_D_FIFO_THRESH - 1); | |
364 | if (count == 0) | |
365 | count = W_D_FIFO_THRESH; | |
366 | W6692_empty_Dfifo(card, count); | |
367 | recv_Dchannel(&card->dch); | |
368 | } | |
369 | } | |
370 | ||
371 | static void | |
372 | handle_txD(struct w6692_hw *card) { | |
373 | if (test_and_clear_bit(FLG_BUSY_TIMER, &card->dch.Flags)) | |
374 | del_timer(&card->dch.timer); | |
375 | if (card->dch.tx_skb && card->dch.tx_idx < card->dch.tx_skb->len) { | |
376 | W6692_fill_Dfifo(card); | |
377 | } else { | |
0f817a5e | 378 | dev_kfree_skb(card->dch.tx_skb); |
707b2ce6 KK |
379 | if (get_next_dframe(&card->dch)) |
380 | W6692_fill_Dfifo(card); | |
381 | } | |
382 | } | |
383 | ||
384 | static void | |
385 | handle_statusD(struct w6692_hw *card) | |
386 | { | |
387 | struct dchannel *dch = &card->dch; | |
388 | u8 exval, v1, cir; | |
389 | ||
390 | exval = ReadW6692(card, W_D_EXIR); | |
391 | ||
392 | pr_debug("%s: D_EXIR %02x\n", card->name, exval); | |
393 | if (exval & (W_D_EXI_XDUN | W_D_EXI_XCOL)) { | |
394 | /* Transmit underrun/collision */ | |
395 | pr_debug("%s: D-channel underrun/collision\n", card->name); | |
396 | #ifdef ERROR_STATISTIC | |
397 | dch->err_tx++; | |
398 | #endif | |
399 | d_retransmit(card); | |
400 | } | |
401 | if (exval & W_D_EXI_RDOV) { /* RDOV */ | |
402 | pr_debug("%s: D-channel RDOV\n", card->name); | |
403 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST); | |
404 | } | |
405 | if (exval & W_D_EXI_TIN2) /* TIN2 - never */ | |
406 | pr_debug("%s: spurious TIN2 interrupt\n", card->name); | |
407 | if (exval & W_D_EXI_MOC) { /* MOC - not supported */ | |
408 | v1 = ReadW6692(card, W_MOSR); | |
409 | pr_debug("%s: spurious MOC interrupt MOSR %02x\n", | |
475be4d8 | 410 | card->name, v1); |
707b2ce6 KK |
411 | } |
412 | if (exval & W_D_EXI_ISC) { /* ISC - Level1 change */ | |
413 | cir = ReadW6692(card, W_CIR); | |
414 | pr_debug("%s: ISC CIR %02X\n", card->name, cir); | |
415 | if (cir & W_CIR_ICC) { | |
416 | v1 = cir & W_CIR_COD_MASK; | |
417 | pr_debug("%s: ph_state_change %x -> %x\n", card->name, | |
475be4d8 | 418 | dch->state, v1); |
707b2ce6 KK |
419 | card->state = v1; |
420 | if (card->fmask & led) { | |
421 | switch (v1) { | |
422 | case W_L1IND_AI8: | |
423 | case W_L1IND_AI10: | |
424 | w6692_led_handler(card, 1); | |
425 | break; | |
426 | default: | |
427 | w6692_led_handler(card, 0); | |
428 | break; | |
429 | } | |
430 | } | |
431 | W6692_new_ph(card); | |
432 | } | |
433 | if (cir & W_CIR_SCC) { | |
434 | v1 = ReadW6692(card, W_SQR); | |
435 | pr_debug("%s: SCC SQR %02X\n", card->name, v1); | |
436 | } | |
437 | } | |
438 | if (exval & W_D_EXI_WEXP) | |
439 | pr_debug("%s: spurious WEXP interrupt!\n", card->name); | |
440 | if (exval & W_D_EXI_TEXP) | |
441 | pr_debug("%s: spurious TEXP interrupt!\n", card->name); | |
442 | } | |
443 | ||
444 | static void | |
445 | W6692_empty_Bfifo(struct w6692_ch *wch, int count) | |
446 | { | |
447 | struct w6692_hw *card = wch->bch.hw; | |
448 | u8 *ptr; | |
7206e659 | 449 | int maxlen; |
707b2ce6 KK |
450 | |
451 | pr_debug("%s: empty_Bfifo %d\n", card->name, count); | |
452 | if (unlikely(wch->bch.state == ISDN_P_NONE)) { | |
453 | pr_debug("%s: empty_Bfifo ISDN_P_NONE\n", card->name); | |
454 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT); | |
455 | if (wch->bch.rx_skb) | |
456 | skb_trim(wch->bch.rx_skb, 0); | |
457 | return; | |
458 | } | |
c27b46e7 KK |
459 | if (test_bit(FLG_RX_OFF, &wch->bch.Flags)) { |
460 | wch->bch.dropcnt += count; | |
461 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT); | |
462 | return; | |
463 | } | |
7206e659 KK |
464 | maxlen = bchannel_get_rxbuf(&wch->bch, count); |
465 | if (maxlen < 0) { | |
707b2ce6 | 466 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT); |
7206e659 KK |
467 | if (wch->bch.rx_skb) |
468 | skb_trim(wch->bch.rx_skb, 0); | |
257daba4 KW |
469 | pr_warn("%s.B%d: No bufferspace for %d bytes\n", |
470 | card->name, wch->bch.nr, count); | |
707b2ce6 KK |
471 | return; |
472 | } | |
473 | ptr = skb_put(wch->bch.rx_skb, count); | |
474 | insb(wch->addr + W_B_RFIFO, ptr, count); | |
475 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT); | |
476 | if (debug & DEBUG_HW_DFIFO) { | |
477 | snprintf(card->log, 63, "B%1d-recv %s %d ", | |
475be4d8 | 478 | wch->bch.nr, card->name, count); |
707b2ce6 KK |
479 | print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count); |
480 | } | |
481 | } | |
482 | ||
483 | static void | |
484 | W6692_fill_Bfifo(struct w6692_ch *wch) | |
485 | { | |
486 | struct w6692_hw *card = wch->bch.hw; | |
6d1ee48f | 487 | int count, fillempty = 0; |
707b2ce6 KK |
488 | u8 *ptr, cmd = W_B_CMDR_RACT | W_B_CMDR_XMS; |
489 | ||
490 | pr_debug("%s: fill Bfifo\n", card->name); | |
6d1ee48f KK |
491 | if (!wch->bch.tx_skb) { |
492 | if (!test_bit(FLG_TX_EMPTY, &wch->bch.Flags)) | |
493 | return; | |
494 | ptr = wch->bch.fill; | |
495 | count = W_B_FIFO_THRESH; | |
496 | fillempty = 1; | |
497 | } else { | |
498 | count = wch->bch.tx_skb->len - wch->bch.tx_idx; | |
499 | if (count <= 0) | |
500 | return; | |
501 | ptr = wch->bch.tx_skb->data + wch->bch.tx_idx; | |
502 | } | |
707b2ce6 KK |
503 | if (count > W_B_FIFO_THRESH) |
504 | count = W_B_FIFO_THRESH; | |
505 | else if (test_bit(FLG_HDLC, &wch->bch.Flags)) | |
506 | cmd |= W_B_CMDR_XME; | |
507 | ||
508 | pr_debug("%s: fill Bfifo%d/%d\n", card->name, | |
475be4d8 | 509 | count, wch->bch.tx_idx); |
707b2ce6 | 510 | wch->bch.tx_idx += count; |
6d1ee48f KK |
511 | if (fillempty) { |
512 | while (count > 0) { | |
513 | outsb(wch->addr + W_B_XFIFO, ptr, MISDN_BCH_FILL_SIZE); | |
514 | count -= MISDN_BCH_FILL_SIZE; | |
515 | } | |
516 | } else { | |
517 | outsb(wch->addr + W_B_XFIFO, ptr, count); | |
518 | } | |
707b2ce6 | 519 | WriteW6692B(wch, W_B_CMDR, cmd); |
6d1ee48f | 520 | if ((debug & DEBUG_HW_BFIFO) && !fillempty) { |
707b2ce6 | 521 | snprintf(card->log, 63, "B%1d-send %s %d ", |
475be4d8 | 522 | wch->bch.nr, card->name, count); |
707b2ce6 KK |
523 | print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count); |
524 | } | |
525 | } | |
526 | ||
3e598177 | 527 | #if 0 |
707b2ce6 KK |
528 | static int |
529 | setvolume(struct w6692_ch *wch, int mic, struct sk_buff *skb) | |
530 | { | |
531 | struct w6692_hw *card = wch->bch.hw; | |
532 | u16 *vol = (u16 *)skb->data; | |
533 | u8 val; | |
534 | ||
535 | if ((!(card->fmask & pots)) || | |
536 | !test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) | |
537 | return -ENODEV; | |
538 | if (skb->len < 2) | |
539 | return -EINVAL; | |
540 | if (*vol > 7) | |
541 | return -EINVAL; | |
542 | val = *vol & 7; | |
543 | val = 7 - val; | |
544 | if (mic) { | |
545 | val <<= 3; | |
546 | card->xaddr &= 0xc7; | |
547 | } else { | |
548 | card->xaddr &= 0xf8; | |
549 | } | |
550 | card->xaddr |= val; | |
551 | WriteW6692(card, W_XADDR, card->xaddr); | |
552 | return 0; | |
553 | } | |
554 | ||
555 | static int | |
556 | enable_pots(struct w6692_ch *wch) | |
557 | { | |
558 | struct w6692_hw *card = wch->bch.hw; | |
559 | ||
560 | if ((!(card->fmask & pots)) || | |
561 | !test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) | |
562 | return -ENODEV; | |
563 | wch->b_mode |= W_B_MODE_EPCM | W_B_MODE_BSW0; | |
564 | WriteW6692B(wch, W_B_MODE, wch->b_mode); | |
565 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST); | |
566 | card->pctl |= ((wch->bch.nr & 2) ? W_PCTL_PCX : 0); | |
567 | WriteW6692(card, W_PCTL, card->pctl); | |
568 | return 0; | |
569 | } | |
3e598177 | 570 | #endif |
707b2ce6 KK |
571 | |
572 | static int | |
573 | disable_pots(struct w6692_ch *wch) | |
574 | { | |
575 | struct w6692_hw *card = wch->bch.hw; | |
576 | ||
577 | if (!(card->fmask & pots)) | |
578 | return -ENODEV; | |
579 | wch->b_mode &= ~(W_B_MODE_EPCM | W_B_MODE_BSW0); | |
580 | WriteW6692B(wch, W_B_MODE, wch->b_mode); | |
581 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT | | |
475be4d8 | 582 | W_B_CMDR_XRST); |
707b2ce6 KK |
583 | return 0; |
584 | } | |
585 | ||
586 | static int | |
587 | w6692_mode(struct w6692_ch *wch, u32 pr) | |
588 | { | |
589 | struct w6692_hw *card; | |
590 | ||
591 | card = wch->bch.hw; | |
592 | pr_debug("%s: B%d protocol %x-->%x\n", card->name, | |
475be4d8 | 593 | wch->bch.nr, wch->bch.state, pr); |
707b2ce6 KK |
594 | switch (pr) { |
595 | case ISDN_P_NONE: | |
596 | if ((card->fmask & pots) && (wch->b_mode & W_B_MODE_EPCM)) | |
597 | disable_pots(wch); | |
598 | wch->b_mode = 0; | |
599 | mISDN_clear_bchannel(&wch->bch); | |
600 | WriteW6692B(wch, W_B_MODE, wch->b_mode); | |
601 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST); | |
602 | test_and_clear_bit(FLG_HDLC, &wch->bch.Flags); | |
603 | test_and_clear_bit(FLG_TRANSPARENT, &wch->bch.Flags); | |
604 | break; | |
605 | case ISDN_P_B_RAW: | |
606 | wch->b_mode = W_B_MODE_MMS; | |
607 | WriteW6692B(wch, W_B_MODE, wch->b_mode); | |
608 | WriteW6692B(wch, W_B_EXIM, 0); | |
609 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT | | |
475be4d8 | 610 | W_B_CMDR_XRST); |
707b2ce6 KK |
611 | test_and_set_bit(FLG_TRANSPARENT, &wch->bch.Flags); |
612 | break; | |
613 | case ISDN_P_B_HDLC: | |
614 | wch->b_mode = W_B_MODE_ITF; | |
615 | WriteW6692B(wch, W_B_MODE, wch->b_mode); | |
616 | WriteW6692B(wch, W_B_ADM1, 0xff); | |
617 | WriteW6692B(wch, W_B_ADM2, 0xff); | |
618 | WriteW6692B(wch, W_B_EXIM, 0); | |
619 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT | | |
475be4d8 | 620 | W_B_CMDR_XRST); |
707b2ce6 KK |
621 | test_and_set_bit(FLG_HDLC, &wch->bch.Flags); |
622 | break; | |
623 | default: | |
624 | pr_info("%s: protocol %x not known\n", card->name, pr); | |
625 | return -ENOPROTOOPT; | |
626 | } | |
627 | wch->bch.state = pr; | |
628 | return 0; | |
629 | } | |
630 | ||
631 | static void | |
632 | send_next(struct w6692_ch *wch) | |
633 | { | |
8bfddfbe | 634 | if (wch->bch.tx_skb && wch->bch.tx_idx < wch->bch.tx_skb->len) { |
707b2ce6 | 635 | W6692_fill_Bfifo(wch); |
8bfddfbe | 636 | } else { |
0f817a5e | 637 | dev_kfree_skb(wch->bch.tx_skb); |
6d1ee48f KK |
638 | if (get_next_bframe(&wch->bch)) { |
639 | W6692_fill_Bfifo(wch); | |
640 | test_and_clear_bit(FLG_TX_EMPTY, &wch->bch.Flags); | |
641 | } else if (test_bit(FLG_TX_EMPTY, &wch->bch.Flags)) { | |
707b2ce6 | 642 | W6692_fill_Bfifo(wch); |
6d1ee48f | 643 | } |
707b2ce6 KK |
644 | } |
645 | } | |
646 | ||
647 | static void | |
648 | W6692B_interrupt(struct w6692_hw *card, int ch) | |
649 | { | |
650 | struct w6692_ch *wch = &card->bc[ch]; | |
651 | int count; | |
652 | u8 stat, star = 0; | |
653 | ||
654 | stat = ReadW6692B(wch, W_B_EXIR); | |
655 | pr_debug("%s: B%d EXIR %02x\n", card->name, wch->bch.nr, stat); | |
656 | if (stat & W_B_EXI_RME) { | |
657 | star = ReadW6692B(wch, W_B_STAR); | |
658 | if (star & (W_B_STAR_RDOV | W_B_STAR_CRCE | W_B_STAR_RMB)) { | |
659 | if ((star & W_B_STAR_RDOV) && | |
660 | test_bit(FLG_ACTIVE, &wch->bch.Flags)) { | |
661 | pr_debug("%s: B%d RDOV proto=%x\n", card->name, | |
475be4d8 | 662 | wch->bch.nr, wch->bch.state); |
707b2ce6 KK |
663 | #ifdef ERROR_STATISTIC |
664 | wch->bch.err_rdo++; | |
665 | #endif | |
666 | } | |
667 | if (test_bit(FLG_HDLC, &wch->bch.Flags)) { | |
668 | if (star & W_B_STAR_CRCE) { | |
669 | pr_debug("%s: B%d CRC error\n", | |
475be4d8 | 670 | card->name, wch->bch.nr); |
707b2ce6 KK |
671 | #ifdef ERROR_STATISTIC |
672 | wch->bch.err_crc++; | |
673 | #endif | |
674 | } | |
675 | if (star & W_B_STAR_RMB) { | |
676 | pr_debug("%s: B%d message abort\n", | |
475be4d8 | 677 | card->name, wch->bch.nr); |
707b2ce6 KK |
678 | #ifdef ERROR_STATISTIC |
679 | wch->bch.err_inv++; | |
680 | #endif | |
681 | } | |
682 | } | |
683 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | | |
475be4d8 | 684 | W_B_CMDR_RRST | W_B_CMDR_RACT); |
707b2ce6 KK |
685 | if (wch->bch.rx_skb) |
686 | skb_trim(wch->bch.rx_skb, 0); | |
687 | } else { | |
688 | count = ReadW6692B(wch, W_B_RBCL) & | |
689 | (W_B_FIFO_THRESH - 1); | |
690 | if (count == 0) | |
691 | count = W_B_FIFO_THRESH; | |
692 | W6692_empty_Bfifo(wch, count); | |
034005a0 | 693 | recv_Bchannel(&wch->bch, 0, false); |
707b2ce6 KK |
694 | } |
695 | } | |
696 | if (stat & W_B_EXI_RMR) { | |
697 | if (!(stat & W_B_EXI_RME)) | |
698 | star = ReadW6692B(wch, W_B_STAR); | |
699 | if (star & W_B_STAR_RDOV) { | |
700 | pr_debug("%s: B%d RDOV proto=%x\n", card->name, | |
475be4d8 | 701 | wch->bch.nr, wch->bch.state); |
707b2ce6 KK |
702 | #ifdef ERROR_STATISTIC |
703 | wch->bch.err_rdo++; | |
704 | #endif | |
705 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | | |
475be4d8 | 706 | W_B_CMDR_RRST | W_B_CMDR_RACT); |
707b2ce6 KK |
707 | } else { |
708 | W6692_empty_Bfifo(wch, W_B_FIFO_THRESH); | |
034005a0 KK |
709 | if (test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) |
710 | recv_Bchannel(&wch->bch, 0, false); | |
707b2ce6 KK |
711 | } |
712 | } | |
713 | if (stat & W_B_EXI_RDOV) { | |
714 | /* only if it is not handled yet */ | |
715 | if (!(star & W_B_STAR_RDOV)) { | |
716 | pr_debug("%s: B%d RDOV IRQ proto=%x\n", card->name, | |
475be4d8 | 717 | wch->bch.nr, wch->bch.state); |
707b2ce6 KK |
718 | #ifdef ERROR_STATISTIC |
719 | wch->bch.err_rdo++; | |
720 | #endif | |
721 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | | |
475be4d8 | 722 | W_B_CMDR_RRST | W_B_CMDR_RACT); |
707b2ce6 KK |
723 | } |
724 | } | |
725 | if (stat & W_B_EXI_XFR) { | |
726 | if (!(stat & (W_B_EXI_RME | W_B_EXI_RMR))) { | |
727 | star = ReadW6692B(wch, W_B_STAR); | |
728 | pr_debug("%s: B%d star %02x\n", card->name, | |
475be4d8 | 729 | wch->bch.nr, star); |
707b2ce6 KK |
730 | } |
731 | if (star & W_B_STAR_XDOW) { | |
257daba4 KW |
732 | pr_warn("%s: B%d XDOW proto=%x\n", card->name, |
733 | wch->bch.nr, wch->bch.state); | |
707b2ce6 KK |
734 | #ifdef ERROR_STATISTIC |
735 | wch->bch.err_xdu++; | |
736 | #endif | |
737 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_XRST | | |
475be4d8 | 738 | W_B_CMDR_RACT); |
707b2ce6 KK |
739 | /* resend */ |
740 | if (wch->bch.tx_skb) { | |
741 | if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) | |
742 | wch->bch.tx_idx = 0; | |
743 | } | |
744 | } | |
745 | send_next(wch); | |
6d1ee48f | 746 | if (star & W_B_STAR_XDOW) |
707b2ce6 KK |
747 | return; /* handle XDOW only once */ |
748 | } | |
749 | if (stat & W_B_EXI_XDUN) { | |
257daba4 KW |
750 | pr_warn("%s: B%d XDUN proto=%x\n", card->name, |
751 | wch->bch.nr, wch->bch.state); | |
707b2ce6 KK |
752 | #ifdef ERROR_STATISTIC |
753 | wch->bch.err_xdu++; | |
754 | #endif | |
6d1ee48f | 755 | /* resend - no XRST needed */ |
707b2ce6 KK |
756 | if (wch->bch.tx_skb) { |
757 | if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) | |
758 | wch->bch.tx_idx = 0; | |
6d1ee48f KK |
759 | } else if (test_bit(FLG_FILLEMPTY, &wch->bch.Flags)) { |
760 | test_and_set_bit(FLG_TX_EMPTY, &wch->bch.Flags); | |
707b2ce6 KK |
761 | } |
762 | send_next(wch); | |
763 | } | |
764 | } | |
765 | ||
766 | static irqreturn_t | |
767 | w6692_irq(int intno, void *dev_id) | |
768 | { | |
769 | struct w6692_hw *card = dev_id; | |
770 | u8 ista; | |
771 | ||
772 | spin_lock(&card->lock); | |
773 | ista = ReadW6692(card, W_ISTA); | |
774 | if ((ista | card->imask) == card->imask) { | |
775 | /* possible a shared IRQ reqest */ | |
776 | spin_unlock(&card->lock); | |
777 | return IRQ_NONE; | |
778 | } | |
779 | card->irqcnt++; | |
780 | pr_debug("%s: ista %02x\n", card->name, ista); | |
781 | ista &= ~card->imask; | |
782 | if (ista & W_INT_B1_EXI) | |
783 | W6692B_interrupt(card, 0); | |
784 | if (ista & W_INT_B2_EXI) | |
785 | W6692B_interrupt(card, 1); | |
786 | if (ista & W_INT_D_RME) | |
787 | handle_rxD(card); | |
788 | if (ista & W_INT_D_RMR) | |
789 | W6692_empty_Dfifo(card, W_D_FIFO_THRESH); | |
790 | if (ista & W_INT_D_XFR) | |
791 | handle_txD(card); | |
792 | if (ista & W_INT_D_EXI) | |
793 | handle_statusD(card); | |
794 | if (ista & (W_INT_XINT0 | W_INT_XINT1)) /* XINT0/1 - never */ | |
795 | pr_debug("%s: W6692 spurious XINT!\n", card->name); | |
796 | /* End IRQ Handler */ | |
797 | spin_unlock(&card->lock); | |
798 | return IRQ_HANDLED; | |
799 | } | |
800 | ||
801 | static void | |
e313ac12 | 802 | dbusy_timer_handler(struct timer_list *t) |
707b2ce6 | 803 | { |
e313ac12 | 804 | struct dchannel *dch = from_timer(dch, t, timer); |
707b2ce6 KK |
805 | struct w6692_hw *card = dch->hw; |
806 | int rbch, star; | |
807 | u_long flags; | |
808 | ||
809 | if (test_bit(FLG_BUSY_TIMER, &dch->Flags)) { | |
810 | spin_lock_irqsave(&card->lock, flags); | |
811 | rbch = ReadW6692(card, W_D_RBCH); | |
812 | star = ReadW6692(card, W_D_STAR); | |
813 | pr_debug("%s: D-Channel Busy RBCH %02x STAR %02x\n", | |
475be4d8 | 814 | card->name, rbch, star); |
707b2ce6 KK |
815 | if (star & W_D_STAR_XBZ) /* D-Channel Busy */ |
816 | test_and_set_bit(FLG_L1_BUSY, &dch->Flags); | |
817 | else { | |
818 | /* discard frame; reset transceiver */ | |
819 | test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags); | |
820 | if (dch->tx_idx) | |
821 | dch->tx_idx = 0; | |
822 | else | |
823 | pr_info("%s: W6692 D-Channel Busy no tx_idx\n", | |
824 | card->name); | |
825 | /* Transmitter reset */ | |
826 | WriteW6692(card, W_D_CMDR, W_D_CMDR_XRST); | |
827 | } | |
828 | spin_unlock_irqrestore(&card->lock, flags); | |
829 | } | |
830 | } | |
831 | ||
569e937e | 832 | static void initW6692(struct w6692_hw *card) |
707b2ce6 KK |
833 | { |
834 | u8 val; | |
835 | ||
e313ac12 | 836 | timer_setup(&card->dch.timer, dbusy_timer_handler, 0); |
707b2ce6 KK |
837 | w6692_mode(&card->bc[0], ISDN_P_NONE); |
838 | w6692_mode(&card->bc[1], ISDN_P_NONE); | |
839 | WriteW6692(card, W_D_CTL, 0x00); | |
840 | disable_hwirq(card); | |
841 | WriteW6692(card, W_D_SAM, 0xff); | |
842 | WriteW6692(card, W_D_TAM, 0xff); | |
843 | WriteW6692(card, W_D_MODE, W_D_MODE_RACT); | |
844 | card->state = W_L1CMD_RST; | |
845 | ph_command(card, W_L1CMD_RST); | |
846 | ph_command(card, W_L1CMD_ECK); | |
847 | /* enable all IRQ but extern */ | |
848 | card->imask = 0x18; | |
849 | WriteW6692(card, W_D_EXIM, 0x00); | |
850 | WriteW6692B(&card->bc[0], W_B_EXIM, 0); | |
851 | WriteW6692B(&card->bc[1], W_B_EXIM, 0); | |
852 | /* Reset D-chan receiver and transmitter */ | |
853 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST | W_D_CMDR_XRST); | |
854 | /* Reset B-chan receiver and transmitter */ | |
855 | WriteW6692B(&card->bc[0], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST); | |
856 | WriteW6692B(&card->bc[1], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST); | |
857 | /* enable peripheral */ | |
858 | if (card->subtype == W6692_USR) { | |
859 | /* seems that USR implemented some power control features | |
860 | * Pin 79 is connected to the oscilator circuit so we | |
861 | * have to handle it here | |
862 | */ | |
863 | card->pctl = 0x80; | |
864 | card->xdata = 0; | |
865 | WriteW6692(card, W_PCTL, card->pctl); | |
866 | WriteW6692(card, W_XDATA, card->xdata); | |
867 | } else { | |
868 | card->pctl = W_PCTL_OE5 | W_PCTL_OE4 | W_PCTL_OE2 | | |
869 | W_PCTL_OE1 | W_PCTL_OE0; | |
870 | card->xaddr = 0x00;/* all sw off */ | |
871 | if (card->fmask & pots) | |
872 | card->xdata |= 0x06; /* POWER UP/ LED OFF / ALAW */ | |
873 | if (card->fmask & led) | |
874 | card->xdata |= 0x04; /* LED OFF */ | |
875 | if ((card->fmask & pots) || (card->fmask & led)) { | |
876 | WriteW6692(card, W_PCTL, card->pctl); | |
877 | WriteW6692(card, W_XADDR, card->xaddr); | |
878 | WriteW6692(card, W_XDATA, card->xdata); | |
879 | val = ReadW6692(card, W_XADDR); | |
880 | if (debug & DEBUG_HW) | |
881 | pr_notice("%s: W_XADDR=%02x\n", | |
475be4d8 | 882 | card->name, val); |
707b2ce6 KK |
883 | } |
884 | } | |
885 | } | |
886 | ||
887 | static void | |
888 | reset_w6692(struct w6692_hw *card) | |
889 | { | |
890 | WriteW6692(card, W_D_CTL, W_D_CTL_SRST); | |
891 | mdelay(10); | |
892 | WriteW6692(card, W_D_CTL, 0); | |
893 | } | |
894 | ||
895 | static int | |
896 | init_card(struct w6692_hw *card) | |
897 | { | |
898 | int cnt = 3; | |
899 | u_long flags; | |
900 | ||
901 | spin_lock_irqsave(&card->lock, flags); | |
902 | disable_hwirq(card); | |
903 | spin_unlock_irqrestore(&card->lock, flags); | |
904 | if (request_irq(card->irq, w6692_irq, IRQF_SHARED, card->name, card)) { | |
905 | pr_info("%s: couldn't get interrupt %d\n", card->name, | |
906 | card->irq); | |
907 | return -EIO; | |
908 | } | |
909 | while (cnt--) { | |
910 | spin_lock_irqsave(&card->lock, flags); | |
911 | initW6692(card); | |
912 | enable_hwirq(card); | |
913 | spin_unlock_irqrestore(&card->lock, flags); | |
914 | /* Timeout 10ms */ | |
915 | msleep_interruptible(10); | |
916 | if (debug & DEBUG_HW) | |
917 | pr_notice("%s: IRQ %d count %d\n", card->name, | |
475be4d8 | 918 | card->irq, card->irqcnt); |
707b2ce6 KK |
919 | if (!card->irqcnt) { |
920 | pr_info("%s: IRQ(%d) getting no IRQs during init %d\n", | |
921 | card->name, card->irq, 3 - cnt); | |
922 | reset_w6692(card); | |
923 | } else | |
924 | return 0; | |
925 | } | |
926 | free_irq(card->irq, card); | |
927 | return -EIO; | |
928 | } | |
929 | ||
930 | static int | |
931 | w6692_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb) | |
932 | { | |
933 | struct bchannel *bch = container_of(ch, struct bchannel, ch); | |
934 | struct w6692_ch *bc = container_of(bch, struct w6692_ch, bch); | |
935 | struct w6692_hw *card = bch->hw; | |
936 | int ret = -EINVAL; | |
937 | struct mISDNhead *hh = mISDN_HEAD_P(skb); | |
8bfddfbe | 938 | unsigned long flags; |
707b2ce6 KK |
939 | |
940 | switch (hh->prim) { | |
941 | case PH_DATA_REQ: | |
942 | spin_lock_irqsave(&card->lock, flags); | |
943 | ret = bchannel_senddata(bch, skb); | |
944 | if (ret > 0) { /* direct TX */ | |
707b2ce6 KK |
945 | ret = 0; |
946 | W6692_fill_Bfifo(bc); | |
8bfddfbe KK |
947 | } |
948 | spin_unlock_irqrestore(&card->lock, flags); | |
707b2ce6 KK |
949 | return ret; |
950 | case PH_ACTIVATE_REQ: | |
951 | spin_lock_irqsave(&card->lock, flags); | |
952 | if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags)) | |
953 | ret = w6692_mode(bc, ch->protocol); | |
954 | else | |
955 | ret = 0; | |
956 | spin_unlock_irqrestore(&card->lock, flags); | |
957 | if (!ret) | |
958 | _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0, | |
475be4d8 | 959 | NULL, GFP_KERNEL); |
707b2ce6 KK |
960 | break; |
961 | case PH_DEACTIVATE_REQ: | |
962 | spin_lock_irqsave(&card->lock, flags); | |
963 | mISDN_clear_bchannel(bch); | |
964 | w6692_mode(bc, ISDN_P_NONE); | |
965 | spin_unlock_irqrestore(&card->lock, flags); | |
966 | _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0, | |
475be4d8 | 967 | NULL, GFP_KERNEL); |
707b2ce6 KK |
968 | ret = 0; |
969 | break; | |
970 | default: | |
971 | pr_info("%s: %s unknown prim(%x,%x)\n", | |
972 | card->name, __func__, hh->prim, hh->id); | |
973 | ret = -EINVAL; | |
974 | } | |
975 | if (!ret) | |
976 | dev_kfree_skb(skb); | |
977 | return ret; | |
978 | } | |
979 | ||
980 | static int | |
981 | channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq) | |
982 | { | |
034005a0 | 983 | return mISDN_ctrl_bchannel(bch, cq); |
707b2ce6 KK |
984 | } |
985 | ||
986 | static int | |
987 | open_bchannel(struct w6692_hw *card, struct channel_req *rq) | |
988 | { | |
989 | struct bchannel *bch; | |
990 | ||
819a1008 | 991 | if (rq->adr.channel == 0 || rq->adr.channel > 2) |
707b2ce6 KK |
992 | return -EINVAL; |
993 | if (rq->protocol == ISDN_P_NONE) | |
994 | return -EINVAL; | |
995 | bch = &card->bc[rq->adr.channel - 1].bch; | |
996 | if (test_and_set_bit(FLG_OPEN, &bch->Flags)) | |
997 | return -EBUSY; /* b-channel can be only open once */ | |
707b2ce6 KK |
998 | bch->ch.protocol = rq->protocol; |
999 | rq->ch = &bch->ch; | |
1000 | return 0; | |
1001 | } | |
1002 | ||
1003 | static int | |
1004 | channel_ctrl(struct w6692_hw *card, struct mISDN_ctrl_req *cq) | |
1005 | { | |
1006 | int ret = 0; | |
1007 | ||
1008 | switch (cq->op) { | |
1009 | case MISDN_CTRL_GETOP: | |
c626c127 KK |
1010 | cq->op = MISDN_CTRL_L1_TIMER3; |
1011 | break; | |
1012 | case MISDN_CTRL_L1_TIMER3: | |
1013 | ret = l1_event(card->dch.l1, HW_TIMER3_VALUE | (cq->p1 & 0xff)); | |
707b2ce6 KK |
1014 | break; |
1015 | default: | |
1016 | pr_info("%s: unknown CTRL OP %x\n", card->name, cq->op); | |
1017 | ret = -EINVAL; | |
1018 | break; | |
1019 | } | |
1020 | return ret; | |
1021 | } | |
1022 | ||
1023 | static int | |
1024 | w6692_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg) | |
1025 | { | |
1026 | struct bchannel *bch = container_of(ch, struct bchannel, ch); | |
1027 | struct w6692_ch *bc = container_of(bch, struct w6692_ch, bch); | |
1028 | struct w6692_hw *card = bch->hw; | |
1029 | int ret = -EINVAL; | |
1030 | u_long flags; | |
1031 | ||
1032 | pr_debug("%s: %s cmd:%x %p\n", card->name, __func__, cmd, arg); | |
1033 | switch (cmd) { | |
1034 | case CLOSE_CHANNEL: | |
1035 | test_and_clear_bit(FLG_OPEN, &bch->Flags); | |
4b921eda | 1036 | cancel_work_sync(&bch->workq); |
1368112c | 1037 | spin_lock_irqsave(&card->lock, flags); |
4b921eda | 1038 | mISDN_clear_bchannel(bch); |
1368112c KK |
1039 | w6692_mode(bc, ISDN_P_NONE); |
1040 | spin_unlock_irqrestore(&card->lock, flags); | |
707b2ce6 KK |
1041 | ch->protocol = ISDN_P_NONE; |
1042 | ch->peer = NULL; | |
1043 | module_put(THIS_MODULE); | |
1044 | ret = 0; | |
1045 | break; | |
1046 | case CONTROL_CHANNEL: | |
1047 | ret = channel_bctrl(bch, arg); | |
1048 | break; | |
1049 | default: | |
1050 | pr_info("%s: %s unknown prim(%x)\n", | |
1051 | card->name, __func__, cmd); | |
1052 | } | |
1053 | return ret; | |
1054 | } | |
1055 | ||
1056 | static int | |
1057 | w6692_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb) | |
1058 | { | |
1059 | struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D); | |
1060 | struct dchannel *dch = container_of(dev, struct dchannel, dev); | |
1061 | struct w6692_hw *card = container_of(dch, struct w6692_hw, dch); | |
1062 | int ret = -EINVAL; | |
1063 | struct mISDNhead *hh = mISDN_HEAD_P(skb); | |
1064 | u32 id; | |
1065 | u_long flags; | |
1066 | ||
1067 | switch (hh->prim) { | |
1068 | case PH_DATA_REQ: | |
1069 | spin_lock_irqsave(&card->lock, flags); | |
1070 | ret = dchannel_senddata(dch, skb); | |
1071 | if (ret > 0) { /* direct TX */ | |
1072 | id = hh->id; /* skb can be freed */ | |
1073 | W6692_fill_Dfifo(card); | |
1074 | ret = 0; | |
1075 | spin_unlock_irqrestore(&card->lock, flags); | |
1076 | queue_ch_frame(ch, PH_DATA_CNF, id, NULL); | |
1077 | } else | |
1078 | spin_unlock_irqrestore(&card->lock, flags); | |
1079 | return ret; | |
1080 | case PH_ACTIVATE_REQ: | |
1081 | ret = l1_event(dch->l1, hh->prim); | |
1082 | break; | |
1083 | case PH_DEACTIVATE_REQ: | |
1084 | test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags); | |
1085 | ret = l1_event(dch->l1, hh->prim); | |
1086 | break; | |
1087 | } | |
1088 | ||
1089 | if (!ret) | |
1090 | dev_kfree_skb(skb); | |
1091 | return ret; | |
1092 | } | |
1093 | ||
1094 | static int | |
1095 | w6692_l1callback(struct dchannel *dch, u32 cmd) | |
1096 | { | |
1097 | struct w6692_hw *card = container_of(dch, struct w6692_hw, dch); | |
1098 | u_long flags; | |
1099 | ||
1100 | pr_debug("%s: cmd(%x) state(%02x)\n", card->name, cmd, card->state); | |
1101 | switch (cmd) { | |
1102 | case INFO3_P8: | |
1103 | spin_lock_irqsave(&card->lock, flags); | |
1104 | ph_command(card, W_L1CMD_AR8); | |
1105 | spin_unlock_irqrestore(&card->lock, flags); | |
1106 | break; | |
1107 | case INFO3_P10: | |
1108 | spin_lock_irqsave(&card->lock, flags); | |
1109 | ph_command(card, W_L1CMD_AR10); | |
1110 | spin_unlock_irqrestore(&card->lock, flags); | |
1111 | break; | |
1112 | case HW_RESET_REQ: | |
1113 | spin_lock_irqsave(&card->lock, flags); | |
1114 | if (card->state != W_L1IND_DRD) | |
1115 | ph_command(card, W_L1CMD_RST); | |
1116 | ph_command(card, W_L1CMD_ECK); | |
1117 | spin_unlock_irqrestore(&card->lock, flags); | |
1118 | break; | |
1119 | case HW_DEACT_REQ: | |
1120 | skb_queue_purge(&dch->squeue); | |
1121 | if (dch->tx_skb) { | |
1122 | dev_kfree_skb(dch->tx_skb); | |
1123 | dch->tx_skb = NULL; | |
1124 | } | |
1125 | dch->tx_idx = 0; | |
1126 | if (dch->rx_skb) { | |
1127 | dev_kfree_skb(dch->rx_skb); | |
1128 | dch->rx_skb = NULL; | |
1129 | } | |
1130 | test_and_clear_bit(FLG_TX_BUSY, &dch->Flags); | |
1131 | if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags)) | |
1132 | del_timer(&dch->timer); | |
1133 | break; | |
1134 | case HW_POWERUP_REQ: | |
1135 | spin_lock_irqsave(&card->lock, flags); | |
1136 | ph_command(card, W_L1CMD_ECK); | |
1137 | spin_unlock_irqrestore(&card->lock, flags); | |
1138 | break; | |
1139 | case PH_ACTIVATE_IND: | |
1140 | test_and_set_bit(FLG_ACTIVE, &dch->Flags); | |
1141 | _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL, | |
475be4d8 | 1142 | GFP_ATOMIC); |
707b2ce6 KK |
1143 | break; |
1144 | case PH_DEACTIVATE_IND: | |
1145 | test_and_clear_bit(FLG_ACTIVE, &dch->Flags); | |
1146 | _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL, | |
475be4d8 | 1147 | GFP_ATOMIC); |
707b2ce6 KK |
1148 | break; |
1149 | default: | |
1150 | pr_debug("%s: %s unknown command %x\n", card->name, | |
475be4d8 | 1151 | __func__, cmd); |
707b2ce6 KK |
1152 | return -1; |
1153 | } | |
1154 | return 0; | |
1155 | } | |
1156 | ||
1157 | static int | |
3e7a8716 | 1158 | open_dchannel(struct w6692_hw *card, struct channel_req *rq, void *caller) |
707b2ce6 KK |
1159 | { |
1160 | pr_debug("%s: %s dev(%d) open from %p\n", card->name, __func__, | |
3e7a8716 | 1161 | card->dch.dev.id, caller); |
707b2ce6 KK |
1162 | if (rq->protocol != ISDN_P_TE_S0) |
1163 | return -EINVAL; | |
1164 | if (rq->adr.channel == 1) | |
1165 | /* E-Channel not supported */ | |
1166 | return -EINVAL; | |
1167 | rq->ch = &card->dch.dev.D; | |
1168 | rq->ch->protocol = rq->protocol; | |
1169 | if (card->dch.state == 7) | |
1170 | _queue_data(rq->ch, PH_ACTIVATE_IND, MISDN_ID_ANY, | |
475be4d8 | 1171 | 0, NULL, GFP_KERNEL); |
707b2ce6 KK |
1172 | return 0; |
1173 | } | |
1174 | ||
1175 | static int | |
1176 | w6692_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg) | |
1177 | { | |
1178 | struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D); | |
1179 | struct dchannel *dch = container_of(dev, struct dchannel, dev); | |
1180 | struct w6692_hw *card = container_of(dch, struct w6692_hw, dch); | |
1181 | struct channel_req *rq; | |
1182 | int err = 0; | |
1183 | ||
1184 | pr_debug("%s: DCTRL: %x %p\n", card->name, cmd, arg); | |
1185 | switch (cmd) { | |
1186 | case OPEN_CHANNEL: | |
1187 | rq = arg; | |
1188 | if (rq->protocol == ISDN_P_TE_S0) | |
3e7a8716 | 1189 | err = open_dchannel(card, rq, __builtin_return_address(0)); |
707b2ce6 KK |
1190 | else |
1191 | err = open_bchannel(card, rq); | |
1192 | if (err) | |
1193 | break; | |
1194 | if (!try_module_get(THIS_MODULE)) | |
1195 | pr_info("%s: cannot get module\n", card->name); | |
1196 | break; | |
1197 | case CLOSE_CHANNEL: | |
1198 | pr_debug("%s: dev(%d) close from %p\n", card->name, | |
475be4d8 | 1199 | dch->dev.id, __builtin_return_address(0)); |
707b2ce6 KK |
1200 | module_put(THIS_MODULE); |
1201 | break; | |
1202 | case CONTROL_CHANNEL: | |
1203 | err = channel_ctrl(card, arg); | |
1204 | break; | |
1205 | default: | |
1206 | pr_debug("%s: unknown DCTRL command %x\n", card->name, cmd); | |
1207 | return -EINVAL; | |
1208 | } | |
1209 | return err; | |
1210 | } | |
1211 | ||
70034918 | 1212 | static int |
707b2ce6 KK |
1213 | setup_w6692(struct w6692_hw *card) |
1214 | { | |
1215 | u32 val; | |
1216 | ||
1217 | if (!request_region(card->addr, 256, card->name)) { | |
1218 | pr_info("%s: config port %x-%x already in use\n", card->name, | |
475be4d8 | 1219 | card->addr, card->addr + 255); |
707b2ce6 KK |
1220 | return -EIO; |
1221 | } | |
1222 | W6692Version(card); | |
1223 | card->bc[0].addr = card->addr; | |
1224 | card->bc[1].addr = card->addr + 0x40; | |
1225 | val = ReadW6692(card, W_ISTA); | |
1226 | if (debug & DEBUG_HW) | |
1227 | pr_notice("%s ISTA=%02x\n", card->name, val); | |
1228 | val = ReadW6692(card, W_IMASK); | |
1229 | if (debug & DEBUG_HW) | |
1230 | pr_notice("%s IMASK=%02x\n", card->name, val); | |
1231 | val = ReadW6692(card, W_D_EXIR); | |
1232 | if (debug & DEBUG_HW) | |
1233 | pr_notice("%s D_EXIR=%02x\n", card->name, val); | |
1234 | val = ReadW6692(card, W_D_EXIM); | |
1235 | if (debug & DEBUG_HW) | |
1236 | pr_notice("%s D_EXIM=%02x\n", card->name, val); | |
1237 | val = ReadW6692(card, W_D_RSTA); | |
1238 | if (debug & DEBUG_HW) | |
1239 | pr_notice("%s D_RSTA=%02x\n", card->name, val); | |
1240 | return 0; | |
1241 | } | |
1242 | ||
1243 | static void | |
1244 | release_card(struct w6692_hw *card) | |
1245 | { | |
1246 | u_long flags; | |
1247 | ||
1248 | spin_lock_irqsave(&card->lock, flags); | |
1249 | disable_hwirq(card); | |
1250 | w6692_mode(&card->bc[0], ISDN_P_NONE); | |
1251 | w6692_mode(&card->bc[1], ISDN_P_NONE); | |
1252 | if ((card->fmask & led) || card->subtype == W6692_USR) { | |
1253 | card->xdata |= 0x04; /* LED OFF */ | |
1254 | WriteW6692(card, W_XDATA, card->xdata); | |
1255 | } | |
1256 | spin_unlock_irqrestore(&card->lock, flags); | |
1257 | free_irq(card->irq, card); | |
1258 | l1_event(card->dch.l1, CLOSE_CHANNEL); | |
1259 | mISDN_unregister_device(&card->dch.dev); | |
1260 | release_region(card->addr, 256); | |
1261 | mISDN_freebchannel(&card->bc[1].bch); | |
1262 | mISDN_freebchannel(&card->bc[0].bch); | |
1263 | mISDN_freedchannel(&card->dch); | |
1264 | write_lock_irqsave(&card_lock, flags); | |
1265 | list_del(&card->list); | |
1266 | write_unlock_irqrestore(&card_lock, flags); | |
1267 | pci_disable_device(card->pdev); | |
1268 | pci_set_drvdata(card->pdev, NULL); | |
1269 | kfree(card); | |
1270 | } | |
1271 | ||
1272 | static int | |
1273 | setup_instance(struct w6692_hw *card) | |
1274 | { | |
1275 | int i, err; | |
1276 | u_long flags; | |
1277 | ||
1278 | snprintf(card->name, MISDN_MAX_IDLEN - 1, "w6692.%d", w6692_cnt + 1); | |
1279 | write_lock_irqsave(&card_lock, flags); | |
1280 | list_add_tail(&card->list, &Cards); | |
1281 | write_unlock_irqrestore(&card_lock, flags); | |
1282 | card->fmask = (1 << w6692_cnt); | |
1283 | _set_debug(card); | |
1284 | spin_lock_init(&card->lock); | |
1285 | mISDN_initdchannel(&card->dch, MAX_DFRAME_LEN_L1, W6692_ph_bh); | |
1286 | card->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0); | |
1287 | card->dch.dev.D.send = w6692_l2l1D; | |
1288 | card->dch.dev.D.ctrl = w6692_dctrl; | |
1289 | card->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) | | |
1290 | (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK)); | |
1291 | card->dch.hw = card; | |
1292 | card->dch.dev.nrbchan = 2; | |
1293 | for (i = 0; i < 2; i++) { | |
034005a0 KK |
1294 | mISDN_initbchannel(&card->bc[i].bch, MAX_DATA_MEM, |
1295 | W_B_FIFO_THRESH); | |
707b2ce6 KK |
1296 | card->bc[i].bch.hw = card; |
1297 | card->bc[i].bch.nr = i + 1; | |
1298 | card->bc[i].bch.ch.nr = i + 1; | |
1299 | card->bc[i].bch.ch.send = w6692_l2l1B; | |
1300 | card->bc[i].bch.ch.ctrl = w6692_bctrl; | |
1301 | set_channelmap(i + 1, card->dch.dev.channelmap); | |
1302 | list_add(&card->bc[i].bch.ch.list, &card->dch.dev.bchannels); | |
1303 | } | |
1304 | err = setup_w6692(card); | |
1305 | if (err) | |
1306 | goto error_setup; | |
1307 | err = mISDN_register_device(&card->dch.dev, &card->pdev->dev, | |
475be4d8 | 1308 | card->name); |
707b2ce6 KK |
1309 | if (err) |
1310 | goto error_reg; | |
1311 | err = init_card(card); | |
1312 | if (err) | |
1313 | goto error_init; | |
1314 | err = create_l1(&card->dch, w6692_l1callback); | |
1315 | if (!err) { | |
1316 | w6692_cnt++; | |
1317 | pr_notice("W6692 %d cards installed\n", w6692_cnt); | |
1318 | return 0; | |
1319 | } | |
1320 | ||
1321 | free_irq(card->irq, card); | |
1322 | error_init: | |
1323 | mISDN_unregister_device(&card->dch.dev); | |
1324 | error_reg: | |
1325 | release_region(card->addr, 256); | |
1326 | error_setup: | |
1327 | mISDN_freebchannel(&card->bc[1].bch); | |
1328 | mISDN_freebchannel(&card->bc[0].bch); | |
1329 | mISDN_freedchannel(&card->dch); | |
1330 | write_lock_irqsave(&card_lock, flags); | |
1331 | list_del(&card->list); | |
1332 | write_unlock_irqrestore(&card_lock, flags); | |
1333 | kfree(card); | |
1334 | return err; | |
1335 | } | |
1336 | ||
ed5a84cd | 1337 | static int |
707b2ce6 KK |
1338 | w6692_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
1339 | { | |
1340 | int err = -ENOMEM; | |
1341 | struct w6692_hw *card; | |
1342 | struct w6692map *m = (struct w6692map *)ent->driver_data; | |
1343 | ||
1344 | card = kzalloc(sizeof(struct w6692_hw), GFP_KERNEL); | |
1345 | if (!card) { | |
1346 | pr_info("No kmem for w6692 card\n"); | |
1347 | return err; | |
1348 | } | |
1349 | card->pdev = pdev; | |
1350 | card->subtype = m->subtype; | |
1351 | err = pci_enable_device(pdev); | |
1352 | if (err) { | |
1353 | kfree(card); | |
1354 | return err; | |
1355 | } | |
1356 | ||
1357 | printk(KERN_INFO "mISDN_w6692: found adapter %s at %s\n", | |
1358 | m->name, pci_name(pdev)); | |
1359 | ||
1360 | card->addr = pci_resource_start(pdev, 1); | |
1361 | card->irq = pdev->irq; | |
1362 | pci_set_drvdata(pdev, card); | |
1363 | err = setup_instance(card); | |
1364 | if (err) | |
1365 | pci_set_drvdata(pdev, NULL); | |
1366 | return err; | |
1367 | } | |
1368 | ||
ed5a84cd | 1369 | static void |
707b2ce6 KK |
1370 | w6692_remove_pci(struct pci_dev *pdev) |
1371 | { | |
1372 | struct w6692_hw *card = pci_get_drvdata(pdev); | |
1373 | ||
1374 | if (card) | |
1375 | release_card(card); | |
1376 | else | |
1377 | if (debug) | |
698f9315 | 1378 | pr_notice("%s: drvdata already removed\n", __func__); |
707b2ce6 KK |
1379 | } |
1380 | ||
e8336ed0 | 1381 | static const struct pci_device_id w6692_ids[] = { |
707b2ce6 KK |
1382 | { PCI_VENDOR_ID_DYNALINK, PCI_DEVICE_ID_DYNALINK_IS64PH, |
1383 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[0]}, | |
1384 | { PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692, | |
1385 | PCI_VENDOR_ID_USR, PCI_DEVICE_ID_USR_6692, 0, 0, | |
1386 | (ulong)&w6692_map[2]}, | |
1387 | { PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692, | |
1388 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[1]}, | |
1389 | { } | |
1390 | }; | |
1391 | MODULE_DEVICE_TABLE(pci, w6692_ids); | |
1392 | ||
1393 | static struct pci_driver w6692_driver = { | |
1394 | .name = "w6692", | |
1395 | .probe = w6692_probe, | |
ed5a84cd | 1396 | .remove = w6692_remove_pci, |
707b2ce6 KK |
1397 | .id_table = w6692_ids, |
1398 | }; | |
1399 | ||
1400 | static int __init w6692_init(void) | |
1401 | { | |
1402 | int err; | |
1403 | ||
1404 | pr_notice("Winbond W6692 PCI driver Rev. %s\n", W6692_REV); | |
1405 | ||
1406 | err = pci_register_driver(&w6692_driver); | |
1407 | return err; | |
1408 | } | |
1409 | ||
1410 | static void __exit w6692_cleanup(void) | |
1411 | { | |
1412 | pci_unregister_driver(&w6692_driver); | |
1413 | } | |
1414 | ||
1415 | module_init(w6692_init); | |
1416 | module_exit(w6692_cleanup); |