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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"); | |
2ebb87f4 | 104 | MODULE_DESCRIPTION("mISDN driver for Winbond w6692 based cards"); |
707b2ce6 KK |
105 | MODULE_LICENSE("GPL v2"); |
106 | MODULE_VERSION(W6692_REV); | |
107 | module_param_call(debug, set_debug, param_get_uint, &debug, S_IRUGO | S_IWUSR); | |
108 | MODULE_PARM_DESC(debug, "W6692 debug mask"); | |
109 | module_param(led, uint, S_IRUGO | S_IWUSR); | |
110 | MODULE_PARM_DESC(led, "W6692 LED support bitmask (one bit per card)"); | |
111 | module_param(pots, uint, S_IRUGO | S_IWUSR); | |
112 | MODULE_PARM_DESC(pots, "W6692 POTS support bitmask (one bit per card)"); | |
113 | ||
114 | static inline u8 | |
115 | ReadW6692(struct w6692_hw *card, u8 offset) | |
116 | { | |
117 | return inb(card->addr + offset); | |
118 | } | |
119 | ||
120 | static inline void | |
121 | WriteW6692(struct w6692_hw *card, u8 offset, u8 value) | |
122 | { | |
123 | outb(value, card->addr + offset); | |
124 | } | |
125 | ||
126 | static inline u8 | |
127 | ReadW6692B(struct w6692_ch *bc, u8 offset) | |
128 | { | |
129 | return inb(bc->addr + offset); | |
130 | } | |
131 | ||
132 | static inline void | |
133 | WriteW6692B(struct w6692_ch *bc, u8 offset, u8 value) | |
134 | { | |
135 | outb(value, bc->addr + offset); | |
136 | } | |
137 | ||
138 | static void | |
139 | enable_hwirq(struct w6692_hw *card) | |
140 | { | |
141 | WriteW6692(card, W_IMASK, card->imask); | |
142 | } | |
143 | ||
144 | static void | |
145 | disable_hwirq(struct w6692_hw *card) | |
146 | { | |
147 | WriteW6692(card, W_IMASK, 0xff); | |
148 | } | |
149 | ||
150 | static const char *W6692Ver[] = {"V00", "V01", "V10", "V11"}; | |
151 | ||
152 | static void | |
153 | W6692Version(struct w6692_hw *card) | |
154 | { | |
155 | int val; | |
156 | ||
157 | val = ReadW6692(card, W_D_RBCH); | |
158 | pr_notice("%s: Winbond W6692 version: %s\n", card->name, | |
475be4d8 | 159 | W6692Ver[(val >> 6) & 3]); |
707b2ce6 KK |
160 | } |
161 | ||
162 | static void | |
163 | w6692_led_handler(struct w6692_hw *card, int on) | |
164 | { | |
165 | if ((!(card->fmask & led)) || card->subtype == W6692_USR) | |
166 | return; | |
167 | if (on) { | |
168 | card->xdata &= 0xfb; /* LED ON */ | |
169 | WriteW6692(card, W_XDATA, card->xdata); | |
170 | } else { | |
171 | card->xdata |= 0x04; /* LED OFF */ | |
172 | WriteW6692(card, W_XDATA, card->xdata); | |
173 | } | |
174 | } | |
175 | ||
176 | static void | |
177 | ph_command(struct w6692_hw *card, u8 cmd) | |
178 | { | |
179 | pr_debug("%s: ph_command %x\n", card->name, cmd); | |
180 | WriteW6692(card, W_CIX, cmd); | |
181 | } | |
182 | ||
183 | static void | |
184 | W6692_new_ph(struct w6692_hw *card) | |
185 | { | |
186 | if (card->state == W_L1CMD_RST) | |
187 | ph_command(card, W_L1CMD_DRC); | |
188 | schedule_event(&card->dch, FLG_PHCHANGE); | |
189 | } | |
190 | ||
191 | static void | |
192 | W6692_ph_bh(struct dchannel *dch) | |
193 | { | |
194 | struct w6692_hw *card = dch->hw; | |
195 | ||
196 | switch (card->state) { | |
197 | case W_L1CMD_RST: | |
198 | dch->state = 0; | |
199 | l1_event(dch->l1, HW_RESET_IND); | |
200 | break; | |
201 | case W_L1IND_CD: | |
202 | dch->state = 3; | |
203 | l1_event(dch->l1, HW_DEACT_CNF); | |
204 | break; | |
205 | case W_L1IND_DRD: | |
206 | dch->state = 3; | |
207 | l1_event(dch->l1, HW_DEACT_IND); | |
208 | break; | |
209 | case W_L1IND_CE: | |
210 | dch->state = 4; | |
211 | l1_event(dch->l1, HW_POWERUP_IND); | |
212 | break; | |
213 | case W_L1IND_LD: | |
214 | if (dch->state <= 5) { | |
215 | dch->state = 5; | |
216 | l1_event(dch->l1, ANYSIGNAL); | |
217 | } else { | |
218 | dch->state = 8; | |
219 | l1_event(dch->l1, LOSTFRAMING); | |
220 | } | |
221 | break; | |
222 | case W_L1IND_ARD: | |
223 | dch->state = 6; | |
224 | l1_event(dch->l1, INFO2); | |
225 | break; | |
226 | case W_L1IND_AI8: | |
227 | dch->state = 7; | |
228 | l1_event(dch->l1, INFO4_P8); | |
229 | break; | |
230 | case W_L1IND_AI10: | |
231 | dch->state = 7; | |
232 | l1_event(dch->l1, INFO4_P10); | |
233 | break; | |
234 | default: | |
235 | pr_debug("%s: TE unknown state %02x dch state %02x\n", | |
475be4d8 | 236 | card->name, card->state, dch->state); |
707b2ce6 KK |
237 | break; |
238 | } | |
239 | pr_debug("%s: TE newstate %02x\n", card->name, dch->state); | |
240 | } | |
241 | ||
242 | static void | |
243 | W6692_empty_Dfifo(struct w6692_hw *card, int count) | |
244 | { | |
245 | struct dchannel *dch = &card->dch; | |
246 | u8 *ptr; | |
247 | ||
248 | pr_debug("%s: empty_Dfifo %d\n", card->name, count); | |
249 | if (!dch->rx_skb) { | |
250 | dch->rx_skb = mI_alloc_skb(card->dch.maxlen, GFP_ATOMIC); | |
251 | if (!dch->rx_skb) { | |
252 | pr_info("%s: D receive out of memory\n", card->name); | |
253 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK); | |
254 | return; | |
255 | } | |
256 | } | |
257 | if ((dch->rx_skb->len + count) >= dch->maxlen) { | |
258 | pr_debug("%s: empty_Dfifo overrun %d\n", card->name, | |
475be4d8 | 259 | dch->rx_skb->len + count); |
707b2ce6 KK |
260 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK); |
261 | return; | |
262 | } | |
263 | ptr = skb_put(dch->rx_skb, count); | |
264 | insb(card->addr + W_D_RFIFO, ptr, count); | |
265 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK); | |
266 | if (debug & DEBUG_HW_DFIFO) { | |
267 | snprintf(card->log, 63, "D-recv %s %d ", | |
475be4d8 | 268 | card->name, count); |
707b2ce6 KK |
269 | print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count); |
270 | } | |
271 | } | |
272 | ||
273 | static void | |
274 | W6692_fill_Dfifo(struct w6692_hw *card) | |
275 | { | |
276 | struct dchannel *dch = &card->dch; | |
277 | int count; | |
278 | u8 *ptr; | |
279 | u8 cmd = W_D_CMDR_XMS; | |
280 | ||
281 | pr_debug("%s: fill_Dfifo\n", card->name); | |
282 | if (!dch->tx_skb) | |
283 | return; | |
284 | count = dch->tx_skb->len - dch->tx_idx; | |
285 | if (count <= 0) | |
286 | return; | |
287 | if (count > W_D_FIFO_THRESH) | |
288 | count = W_D_FIFO_THRESH; | |
289 | else | |
290 | cmd |= W_D_CMDR_XME; | |
291 | ptr = dch->tx_skb->data + dch->tx_idx; | |
292 | dch->tx_idx += count; | |
293 | outsb(card->addr + W_D_XFIFO, ptr, count); | |
294 | WriteW6692(card, W_D_CMDR, cmd); | |
295 | if (test_and_set_bit(FLG_BUSY_TIMER, &dch->Flags)) { | |
296 | pr_debug("%s: fill_Dfifo dbusytimer running\n", card->name); | |
297 | del_timer(&dch->timer); | |
298 | } | |
475be4d8 | 299 | dch->timer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ) / 1000); |
707b2ce6 KK |
300 | add_timer(&dch->timer); |
301 | if (debug & DEBUG_HW_DFIFO) { | |
302 | snprintf(card->log, 63, "D-send %s %d ", | |
475be4d8 | 303 | card->name, count); |
707b2ce6 KK |
304 | print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count); |
305 | } | |
306 | } | |
307 | ||
308 | static void | |
309 | d_retransmit(struct w6692_hw *card) | |
310 | { | |
311 | struct dchannel *dch = &card->dch; | |
312 | ||
313 | if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags)) | |
314 | del_timer(&dch->timer); | |
315 | #ifdef FIXME | |
316 | if (test_and_clear_bit(FLG_L1_BUSY, &dch->Flags)) | |
317 | dchannel_sched_event(dch, D_CLEARBUSY); | |
318 | #endif | |
319 | if (test_bit(FLG_TX_BUSY, &dch->Flags)) { | |
320 | /* Restart frame */ | |
321 | dch->tx_idx = 0; | |
322 | W6692_fill_Dfifo(card); | |
323 | } else if (dch->tx_skb) { /* should not happen */ | |
324 | pr_info("%s: %s without TX_BUSY\n", card->name, __func__); | |
325 | test_and_set_bit(FLG_TX_BUSY, &dch->Flags); | |
326 | dch->tx_idx = 0; | |
327 | W6692_fill_Dfifo(card); | |
328 | } else { | |
329 | pr_info("%s: XDU no TX_BUSY\n", card->name); | |
330 | if (get_next_dframe(dch)) | |
331 | W6692_fill_Dfifo(card); | |
332 | } | |
333 | } | |
334 | ||
335 | static void | |
336 | handle_rxD(struct w6692_hw *card) { | |
337 | u8 stat; | |
338 | int count; | |
339 | ||
340 | stat = ReadW6692(card, W_D_RSTA); | |
341 | if (stat & (W_D_RSTA_RDOV | W_D_RSTA_CRCE | W_D_RSTA_RMB)) { | |
342 | if (stat & W_D_RSTA_RDOV) { | |
343 | pr_debug("%s: D-channel RDOV\n", card->name); | |
344 | #ifdef ERROR_STATISTIC | |
345 | card->dch.err_rx++; | |
346 | #endif | |
347 | } | |
348 | if (stat & W_D_RSTA_CRCE) { | |
349 | pr_debug("%s: D-channel CRC error\n", card->name); | |
350 | #ifdef ERROR_STATISTIC | |
351 | card->dch.err_crc++; | |
352 | #endif | |
353 | } | |
354 | if (stat & W_D_RSTA_RMB) { | |
355 | pr_debug("%s: D-channel ABORT\n", card->name); | |
356 | #ifdef ERROR_STATISTIC | |
357 | card->dch.err_rx++; | |
358 | #endif | |
359 | } | |
0f817a5e | 360 | dev_kfree_skb(card->dch.rx_skb); |
707b2ce6 KK |
361 | card->dch.rx_skb = NULL; |
362 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RACK | W_D_CMDR_RRST); | |
363 | } else { | |
364 | count = ReadW6692(card, W_D_RBCL) & (W_D_FIFO_THRESH - 1); | |
365 | if (count == 0) | |
366 | count = W_D_FIFO_THRESH; | |
367 | W6692_empty_Dfifo(card, count); | |
368 | recv_Dchannel(&card->dch); | |
369 | } | |
370 | } | |
371 | ||
372 | static void | |
373 | handle_txD(struct w6692_hw *card) { | |
374 | if (test_and_clear_bit(FLG_BUSY_TIMER, &card->dch.Flags)) | |
375 | del_timer(&card->dch.timer); | |
376 | if (card->dch.tx_skb && card->dch.tx_idx < card->dch.tx_skb->len) { | |
377 | W6692_fill_Dfifo(card); | |
378 | } else { | |
0f817a5e | 379 | dev_kfree_skb(card->dch.tx_skb); |
707b2ce6 KK |
380 | if (get_next_dframe(&card->dch)) |
381 | W6692_fill_Dfifo(card); | |
382 | } | |
383 | } | |
384 | ||
385 | static void | |
386 | handle_statusD(struct w6692_hw *card) | |
387 | { | |
388 | struct dchannel *dch = &card->dch; | |
389 | u8 exval, v1, cir; | |
390 | ||
391 | exval = ReadW6692(card, W_D_EXIR); | |
392 | ||
393 | pr_debug("%s: D_EXIR %02x\n", card->name, exval); | |
394 | if (exval & (W_D_EXI_XDUN | W_D_EXI_XCOL)) { | |
395 | /* Transmit underrun/collision */ | |
396 | pr_debug("%s: D-channel underrun/collision\n", card->name); | |
397 | #ifdef ERROR_STATISTIC | |
398 | dch->err_tx++; | |
399 | #endif | |
400 | d_retransmit(card); | |
401 | } | |
402 | if (exval & W_D_EXI_RDOV) { /* RDOV */ | |
403 | pr_debug("%s: D-channel RDOV\n", card->name); | |
404 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST); | |
405 | } | |
406 | if (exval & W_D_EXI_TIN2) /* TIN2 - never */ | |
407 | pr_debug("%s: spurious TIN2 interrupt\n", card->name); | |
408 | if (exval & W_D_EXI_MOC) { /* MOC - not supported */ | |
409 | v1 = ReadW6692(card, W_MOSR); | |
410 | pr_debug("%s: spurious MOC interrupt MOSR %02x\n", | |
475be4d8 | 411 | card->name, v1); |
707b2ce6 KK |
412 | } |
413 | if (exval & W_D_EXI_ISC) { /* ISC - Level1 change */ | |
414 | cir = ReadW6692(card, W_CIR); | |
415 | pr_debug("%s: ISC CIR %02X\n", card->name, cir); | |
416 | if (cir & W_CIR_ICC) { | |
417 | v1 = cir & W_CIR_COD_MASK; | |
418 | pr_debug("%s: ph_state_change %x -> %x\n", card->name, | |
475be4d8 | 419 | dch->state, v1); |
707b2ce6 KK |
420 | card->state = v1; |
421 | if (card->fmask & led) { | |
422 | switch (v1) { | |
423 | case W_L1IND_AI8: | |
424 | case W_L1IND_AI10: | |
425 | w6692_led_handler(card, 1); | |
426 | break; | |
427 | default: | |
428 | w6692_led_handler(card, 0); | |
429 | break; | |
430 | } | |
431 | } | |
432 | W6692_new_ph(card); | |
433 | } | |
434 | if (cir & W_CIR_SCC) { | |
435 | v1 = ReadW6692(card, W_SQR); | |
436 | pr_debug("%s: SCC SQR %02X\n", card->name, v1); | |
437 | } | |
438 | } | |
439 | if (exval & W_D_EXI_WEXP) | |
440 | pr_debug("%s: spurious WEXP interrupt!\n", card->name); | |
441 | if (exval & W_D_EXI_TEXP) | |
442 | pr_debug("%s: spurious TEXP interrupt!\n", card->name); | |
443 | } | |
444 | ||
445 | static void | |
446 | W6692_empty_Bfifo(struct w6692_ch *wch, int count) | |
447 | { | |
448 | struct w6692_hw *card = wch->bch.hw; | |
449 | u8 *ptr; | |
7206e659 | 450 | int maxlen; |
707b2ce6 KK |
451 | |
452 | pr_debug("%s: empty_Bfifo %d\n", card->name, count); | |
453 | if (unlikely(wch->bch.state == ISDN_P_NONE)) { | |
454 | pr_debug("%s: empty_Bfifo ISDN_P_NONE\n", card->name); | |
455 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT); | |
456 | if (wch->bch.rx_skb) | |
457 | skb_trim(wch->bch.rx_skb, 0); | |
458 | return; | |
459 | } | |
c27b46e7 KK |
460 | if (test_bit(FLG_RX_OFF, &wch->bch.Flags)) { |
461 | wch->bch.dropcnt += count; | |
462 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT); | |
463 | return; | |
464 | } | |
7206e659 KK |
465 | maxlen = bchannel_get_rxbuf(&wch->bch, count); |
466 | if (maxlen < 0) { | |
707b2ce6 | 467 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT); |
7206e659 KK |
468 | if (wch->bch.rx_skb) |
469 | skb_trim(wch->bch.rx_skb, 0); | |
257daba4 KW |
470 | pr_warn("%s.B%d: No bufferspace for %d bytes\n", |
471 | card->name, wch->bch.nr, count); | |
707b2ce6 KK |
472 | return; |
473 | } | |
474 | ptr = skb_put(wch->bch.rx_skb, count); | |
475 | insb(wch->addr + W_B_RFIFO, ptr, count); | |
476 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT); | |
477 | if (debug & DEBUG_HW_DFIFO) { | |
478 | snprintf(card->log, 63, "B%1d-recv %s %d ", | |
475be4d8 | 479 | wch->bch.nr, card->name, count); |
707b2ce6 KK |
480 | print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count); |
481 | } | |
482 | } | |
483 | ||
484 | static void | |
485 | W6692_fill_Bfifo(struct w6692_ch *wch) | |
486 | { | |
487 | struct w6692_hw *card = wch->bch.hw; | |
6d1ee48f | 488 | int count, fillempty = 0; |
707b2ce6 KK |
489 | u8 *ptr, cmd = W_B_CMDR_RACT | W_B_CMDR_XMS; |
490 | ||
491 | pr_debug("%s: fill Bfifo\n", card->name); | |
6d1ee48f KK |
492 | if (!wch->bch.tx_skb) { |
493 | if (!test_bit(FLG_TX_EMPTY, &wch->bch.Flags)) | |
494 | return; | |
495 | ptr = wch->bch.fill; | |
496 | count = W_B_FIFO_THRESH; | |
497 | fillempty = 1; | |
498 | } else { | |
499 | count = wch->bch.tx_skb->len - wch->bch.tx_idx; | |
500 | if (count <= 0) | |
501 | return; | |
502 | ptr = wch->bch.tx_skb->data + wch->bch.tx_idx; | |
503 | } | |
707b2ce6 KK |
504 | if (count > W_B_FIFO_THRESH) |
505 | count = W_B_FIFO_THRESH; | |
506 | else if (test_bit(FLG_HDLC, &wch->bch.Flags)) | |
507 | cmd |= W_B_CMDR_XME; | |
508 | ||
509 | pr_debug("%s: fill Bfifo%d/%d\n", card->name, | |
475be4d8 | 510 | count, wch->bch.tx_idx); |
707b2ce6 | 511 | wch->bch.tx_idx += count; |
6d1ee48f KK |
512 | if (fillempty) { |
513 | while (count > 0) { | |
514 | outsb(wch->addr + W_B_XFIFO, ptr, MISDN_BCH_FILL_SIZE); | |
515 | count -= MISDN_BCH_FILL_SIZE; | |
516 | } | |
517 | } else { | |
518 | outsb(wch->addr + W_B_XFIFO, ptr, count); | |
519 | } | |
707b2ce6 | 520 | WriteW6692B(wch, W_B_CMDR, cmd); |
6d1ee48f | 521 | if ((debug & DEBUG_HW_BFIFO) && !fillempty) { |
707b2ce6 | 522 | snprintf(card->log, 63, "B%1d-send %s %d ", |
475be4d8 | 523 | wch->bch.nr, card->name, count); |
707b2ce6 KK |
524 | print_hex_dump_bytes(card->log, DUMP_PREFIX_OFFSET, ptr, count); |
525 | } | |
526 | } | |
527 | ||
3e598177 | 528 | #if 0 |
707b2ce6 KK |
529 | static int |
530 | setvolume(struct w6692_ch *wch, int mic, struct sk_buff *skb) | |
531 | { | |
532 | struct w6692_hw *card = wch->bch.hw; | |
533 | u16 *vol = (u16 *)skb->data; | |
534 | u8 val; | |
535 | ||
536 | if ((!(card->fmask & pots)) || | |
537 | !test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) | |
538 | return -ENODEV; | |
539 | if (skb->len < 2) | |
540 | return -EINVAL; | |
541 | if (*vol > 7) | |
542 | return -EINVAL; | |
543 | val = *vol & 7; | |
544 | val = 7 - val; | |
545 | if (mic) { | |
546 | val <<= 3; | |
547 | card->xaddr &= 0xc7; | |
548 | } else { | |
549 | card->xaddr &= 0xf8; | |
550 | } | |
551 | card->xaddr |= val; | |
552 | WriteW6692(card, W_XADDR, card->xaddr); | |
553 | return 0; | |
554 | } | |
555 | ||
556 | static int | |
557 | enable_pots(struct w6692_ch *wch) | |
558 | { | |
559 | struct w6692_hw *card = wch->bch.hw; | |
560 | ||
561 | if ((!(card->fmask & pots)) || | |
562 | !test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) | |
563 | return -ENODEV; | |
564 | wch->b_mode |= W_B_MODE_EPCM | W_B_MODE_BSW0; | |
565 | WriteW6692B(wch, W_B_MODE, wch->b_mode); | |
566 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST); | |
567 | card->pctl |= ((wch->bch.nr & 2) ? W_PCTL_PCX : 0); | |
568 | WriteW6692(card, W_PCTL, card->pctl); | |
569 | return 0; | |
570 | } | |
3e598177 | 571 | #endif |
707b2ce6 KK |
572 | |
573 | static int | |
574 | disable_pots(struct w6692_ch *wch) | |
575 | { | |
576 | struct w6692_hw *card = wch->bch.hw; | |
577 | ||
578 | if (!(card->fmask & pots)) | |
579 | return -ENODEV; | |
580 | wch->b_mode &= ~(W_B_MODE_EPCM | W_B_MODE_BSW0); | |
581 | WriteW6692B(wch, W_B_MODE, wch->b_mode); | |
582 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT | | |
475be4d8 | 583 | W_B_CMDR_XRST); |
707b2ce6 KK |
584 | return 0; |
585 | } | |
586 | ||
587 | static int | |
588 | w6692_mode(struct w6692_ch *wch, u32 pr) | |
589 | { | |
590 | struct w6692_hw *card; | |
591 | ||
592 | card = wch->bch.hw; | |
593 | pr_debug("%s: B%d protocol %x-->%x\n", card->name, | |
475be4d8 | 594 | wch->bch.nr, wch->bch.state, pr); |
707b2ce6 KK |
595 | switch (pr) { |
596 | case ISDN_P_NONE: | |
597 | if ((card->fmask & pots) && (wch->b_mode & W_B_MODE_EPCM)) | |
598 | disable_pots(wch); | |
599 | wch->b_mode = 0; | |
600 | mISDN_clear_bchannel(&wch->bch); | |
601 | WriteW6692B(wch, W_B_MODE, wch->b_mode); | |
602 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST); | |
603 | test_and_clear_bit(FLG_HDLC, &wch->bch.Flags); | |
604 | test_and_clear_bit(FLG_TRANSPARENT, &wch->bch.Flags); | |
605 | break; | |
606 | case ISDN_P_B_RAW: | |
607 | wch->b_mode = W_B_MODE_MMS; | |
608 | WriteW6692B(wch, W_B_MODE, wch->b_mode); | |
609 | WriteW6692B(wch, W_B_EXIM, 0); | |
610 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT | | |
475be4d8 | 611 | W_B_CMDR_XRST); |
707b2ce6 KK |
612 | test_and_set_bit(FLG_TRANSPARENT, &wch->bch.Flags); |
613 | break; | |
614 | case ISDN_P_B_HDLC: | |
615 | wch->b_mode = W_B_MODE_ITF; | |
616 | WriteW6692B(wch, W_B_MODE, wch->b_mode); | |
617 | WriteW6692B(wch, W_B_ADM1, 0xff); | |
618 | WriteW6692B(wch, W_B_ADM2, 0xff); | |
619 | WriteW6692B(wch, W_B_EXIM, 0); | |
620 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_RACT | | |
475be4d8 | 621 | W_B_CMDR_XRST); |
707b2ce6 KK |
622 | test_and_set_bit(FLG_HDLC, &wch->bch.Flags); |
623 | break; | |
624 | default: | |
625 | pr_info("%s: protocol %x not known\n", card->name, pr); | |
626 | return -ENOPROTOOPT; | |
627 | } | |
628 | wch->bch.state = pr; | |
629 | return 0; | |
630 | } | |
631 | ||
632 | static void | |
633 | send_next(struct w6692_ch *wch) | |
634 | { | |
8bfddfbe | 635 | if (wch->bch.tx_skb && wch->bch.tx_idx < wch->bch.tx_skb->len) { |
707b2ce6 | 636 | W6692_fill_Bfifo(wch); |
8bfddfbe | 637 | } else { |
0f817a5e | 638 | dev_kfree_skb(wch->bch.tx_skb); |
6d1ee48f KK |
639 | if (get_next_bframe(&wch->bch)) { |
640 | W6692_fill_Bfifo(wch); | |
641 | test_and_clear_bit(FLG_TX_EMPTY, &wch->bch.Flags); | |
642 | } else if (test_bit(FLG_TX_EMPTY, &wch->bch.Flags)) { | |
707b2ce6 | 643 | W6692_fill_Bfifo(wch); |
6d1ee48f | 644 | } |
707b2ce6 KK |
645 | } |
646 | } | |
647 | ||
648 | static void | |
649 | W6692B_interrupt(struct w6692_hw *card, int ch) | |
650 | { | |
651 | struct w6692_ch *wch = &card->bc[ch]; | |
652 | int count; | |
653 | u8 stat, star = 0; | |
654 | ||
655 | stat = ReadW6692B(wch, W_B_EXIR); | |
656 | pr_debug("%s: B%d EXIR %02x\n", card->name, wch->bch.nr, stat); | |
657 | if (stat & W_B_EXI_RME) { | |
658 | star = ReadW6692B(wch, W_B_STAR); | |
659 | if (star & (W_B_STAR_RDOV | W_B_STAR_CRCE | W_B_STAR_RMB)) { | |
660 | if ((star & W_B_STAR_RDOV) && | |
661 | test_bit(FLG_ACTIVE, &wch->bch.Flags)) { | |
662 | pr_debug("%s: B%d RDOV proto=%x\n", card->name, | |
475be4d8 | 663 | wch->bch.nr, wch->bch.state); |
707b2ce6 KK |
664 | #ifdef ERROR_STATISTIC |
665 | wch->bch.err_rdo++; | |
666 | #endif | |
667 | } | |
668 | if (test_bit(FLG_HDLC, &wch->bch.Flags)) { | |
669 | if (star & W_B_STAR_CRCE) { | |
670 | pr_debug("%s: B%d CRC error\n", | |
475be4d8 | 671 | card->name, wch->bch.nr); |
707b2ce6 KK |
672 | #ifdef ERROR_STATISTIC |
673 | wch->bch.err_crc++; | |
674 | #endif | |
675 | } | |
676 | if (star & W_B_STAR_RMB) { | |
677 | pr_debug("%s: B%d message abort\n", | |
475be4d8 | 678 | card->name, wch->bch.nr); |
707b2ce6 KK |
679 | #ifdef ERROR_STATISTIC |
680 | wch->bch.err_inv++; | |
681 | #endif | |
682 | } | |
683 | } | |
684 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | | |
475be4d8 | 685 | W_B_CMDR_RRST | W_B_CMDR_RACT); |
707b2ce6 KK |
686 | if (wch->bch.rx_skb) |
687 | skb_trim(wch->bch.rx_skb, 0); | |
688 | } else { | |
689 | count = ReadW6692B(wch, W_B_RBCL) & | |
690 | (W_B_FIFO_THRESH - 1); | |
691 | if (count == 0) | |
692 | count = W_B_FIFO_THRESH; | |
693 | W6692_empty_Bfifo(wch, count); | |
034005a0 | 694 | recv_Bchannel(&wch->bch, 0, false); |
707b2ce6 KK |
695 | } |
696 | } | |
697 | if (stat & W_B_EXI_RMR) { | |
698 | if (!(stat & W_B_EXI_RME)) | |
699 | star = ReadW6692B(wch, W_B_STAR); | |
700 | if (star & W_B_STAR_RDOV) { | |
701 | pr_debug("%s: B%d RDOV proto=%x\n", card->name, | |
475be4d8 | 702 | wch->bch.nr, wch->bch.state); |
707b2ce6 KK |
703 | #ifdef ERROR_STATISTIC |
704 | wch->bch.err_rdo++; | |
705 | #endif | |
706 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | | |
475be4d8 | 707 | W_B_CMDR_RRST | W_B_CMDR_RACT); |
707b2ce6 KK |
708 | } else { |
709 | W6692_empty_Bfifo(wch, W_B_FIFO_THRESH); | |
034005a0 KK |
710 | if (test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) |
711 | recv_Bchannel(&wch->bch, 0, false); | |
707b2ce6 KK |
712 | } |
713 | } | |
714 | if (stat & W_B_EXI_RDOV) { | |
715 | /* only if it is not handled yet */ | |
716 | if (!(star & W_B_STAR_RDOV)) { | |
717 | pr_debug("%s: B%d RDOV IRQ proto=%x\n", card->name, | |
475be4d8 | 718 | wch->bch.nr, wch->bch.state); |
707b2ce6 KK |
719 | #ifdef ERROR_STATISTIC |
720 | wch->bch.err_rdo++; | |
721 | #endif | |
722 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_RACK | | |
475be4d8 | 723 | W_B_CMDR_RRST | W_B_CMDR_RACT); |
707b2ce6 KK |
724 | } |
725 | } | |
726 | if (stat & W_B_EXI_XFR) { | |
727 | if (!(stat & (W_B_EXI_RME | W_B_EXI_RMR))) { | |
728 | star = ReadW6692B(wch, W_B_STAR); | |
729 | pr_debug("%s: B%d star %02x\n", card->name, | |
475be4d8 | 730 | wch->bch.nr, star); |
707b2ce6 KK |
731 | } |
732 | if (star & W_B_STAR_XDOW) { | |
257daba4 KW |
733 | pr_warn("%s: B%d XDOW proto=%x\n", card->name, |
734 | wch->bch.nr, wch->bch.state); | |
707b2ce6 KK |
735 | #ifdef ERROR_STATISTIC |
736 | wch->bch.err_xdu++; | |
737 | #endif | |
738 | WriteW6692B(wch, W_B_CMDR, W_B_CMDR_XRST | | |
475be4d8 | 739 | W_B_CMDR_RACT); |
707b2ce6 KK |
740 | /* resend */ |
741 | if (wch->bch.tx_skb) { | |
742 | if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) | |
743 | wch->bch.tx_idx = 0; | |
744 | } | |
745 | } | |
746 | send_next(wch); | |
6d1ee48f | 747 | if (star & W_B_STAR_XDOW) |
707b2ce6 KK |
748 | return; /* handle XDOW only once */ |
749 | } | |
750 | if (stat & W_B_EXI_XDUN) { | |
257daba4 KW |
751 | pr_warn("%s: B%d XDUN proto=%x\n", card->name, |
752 | wch->bch.nr, wch->bch.state); | |
707b2ce6 KK |
753 | #ifdef ERROR_STATISTIC |
754 | wch->bch.err_xdu++; | |
755 | #endif | |
6d1ee48f | 756 | /* resend - no XRST needed */ |
707b2ce6 KK |
757 | if (wch->bch.tx_skb) { |
758 | if (!test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) | |
759 | wch->bch.tx_idx = 0; | |
6d1ee48f KK |
760 | } else if (test_bit(FLG_FILLEMPTY, &wch->bch.Flags)) { |
761 | test_and_set_bit(FLG_TX_EMPTY, &wch->bch.Flags); | |
707b2ce6 KK |
762 | } |
763 | send_next(wch); | |
764 | } | |
765 | } | |
766 | ||
767 | static irqreturn_t | |
768 | w6692_irq(int intno, void *dev_id) | |
769 | { | |
770 | struct w6692_hw *card = dev_id; | |
771 | u8 ista; | |
772 | ||
773 | spin_lock(&card->lock); | |
774 | ista = ReadW6692(card, W_ISTA); | |
775 | if ((ista | card->imask) == card->imask) { | |
776 | /* possible a shared IRQ reqest */ | |
777 | spin_unlock(&card->lock); | |
778 | return IRQ_NONE; | |
779 | } | |
780 | card->irqcnt++; | |
781 | pr_debug("%s: ista %02x\n", card->name, ista); | |
782 | ista &= ~card->imask; | |
783 | if (ista & W_INT_B1_EXI) | |
784 | W6692B_interrupt(card, 0); | |
785 | if (ista & W_INT_B2_EXI) | |
786 | W6692B_interrupt(card, 1); | |
787 | if (ista & W_INT_D_RME) | |
788 | handle_rxD(card); | |
789 | if (ista & W_INT_D_RMR) | |
790 | W6692_empty_Dfifo(card, W_D_FIFO_THRESH); | |
791 | if (ista & W_INT_D_XFR) | |
792 | handle_txD(card); | |
793 | if (ista & W_INT_D_EXI) | |
794 | handle_statusD(card); | |
795 | if (ista & (W_INT_XINT0 | W_INT_XINT1)) /* XINT0/1 - never */ | |
796 | pr_debug("%s: W6692 spurious XINT!\n", card->name); | |
797 | /* End IRQ Handler */ | |
798 | spin_unlock(&card->lock); | |
799 | return IRQ_HANDLED; | |
800 | } | |
801 | ||
802 | static void | |
e313ac12 | 803 | dbusy_timer_handler(struct timer_list *t) |
707b2ce6 | 804 | { |
e313ac12 | 805 | struct dchannel *dch = from_timer(dch, t, timer); |
707b2ce6 KK |
806 | struct w6692_hw *card = dch->hw; |
807 | int rbch, star; | |
808 | u_long flags; | |
809 | ||
810 | if (test_bit(FLG_BUSY_TIMER, &dch->Flags)) { | |
811 | spin_lock_irqsave(&card->lock, flags); | |
812 | rbch = ReadW6692(card, W_D_RBCH); | |
813 | star = ReadW6692(card, W_D_STAR); | |
814 | pr_debug("%s: D-Channel Busy RBCH %02x STAR %02x\n", | |
475be4d8 | 815 | card->name, rbch, star); |
707b2ce6 KK |
816 | if (star & W_D_STAR_XBZ) /* D-Channel Busy */ |
817 | test_and_set_bit(FLG_L1_BUSY, &dch->Flags); | |
818 | else { | |
819 | /* discard frame; reset transceiver */ | |
820 | test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags); | |
821 | if (dch->tx_idx) | |
822 | dch->tx_idx = 0; | |
823 | else | |
824 | pr_info("%s: W6692 D-Channel Busy no tx_idx\n", | |
825 | card->name); | |
826 | /* Transmitter reset */ | |
827 | WriteW6692(card, W_D_CMDR, W_D_CMDR_XRST); | |
828 | } | |
829 | spin_unlock_irqrestore(&card->lock, flags); | |
830 | } | |
831 | } | |
832 | ||
569e937e | 833 | static void initW6692(struct w6692_hw *card) |
707b2ce6 KK |
834 | { |
835 | u8 val; | |
836 | ||
e313ac12 | 837 | timer_setup(&card->dch.timer, dbusy_timer_handler, 0); |
707b2ce6 KK |
838 | w6692_mode(&card->bc[0], ISDN_P_NONE); |
839 | w6692_mode(&card->bc[1], ISDN_P_NONE); | |
840 | WriteW6692(card, W_D_CTL, 0x00); | |
841 | disable_hwirq(card); | |
842 | WriteW6692(card, W_D_SAM, 0xff); | |
843 | WriteW6692(card, W_D_TAM, 0xff); | |
844 | WriteW6692(card, W_D_MODE, W_D_MODE_RACT); | |
845 | card->state = W_L1CMD_RST; | |
846 | ph_command(card, W_L1CMD_RST); | |
847 | ph_command(card, W_L1CMD_ECK); | |
848 | /* enable all IRQ but extern */ | |
849 | card->imask = 0x18; | |
850 | WriteW6692(card, W_D_EXIM, 0x00); | |
851 | WriteW6692B(&card->bc[0], W_B_EXIM, 0); | |
852 | WriteW6692B(&card->bc[1], W_B_EXIM, 0); | |
853 | /* Reset D-chan receiver and transmitter */ | |
854 | WriteW6692(card, W_D_CMDR, W_D_CMDR_RRST | W_D_CMDR_XRST); | |
855 | /* Reset B-chan receiver and transmitter */ | |
856 | WriteW6692B(&card->bc[0], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST); | |
857 | WriteW6692B(&card->bc[1], W_B_CMDR, W_B_CMDR_RRST | W_B_CMDR_XRST); | |
858 | /* enable peripheral */ | |
859 | if (card->subtype == W6692_USR) { | |
860 | /* seems that USR implemented some power control features | |
861 | * Pin 79 is connected to the oscilator circuit so we | |
862 | * have to handle it here | |
863 | */ | |
864 | card->pctl = 0x80; | |
865 | card->xdata = 0; | |
866 | WriteW6692(card, W_PCTL, card->pctl); | |
867 | WriteW6692(card, W_XDATA, card->xdata); | |
868 | } else { | |
869 | card->pctl = W_PCTL_OE5 | W_PCTL_OE4 | W_PCTL_OE2 | | |
870 | W_PCTL_OE1 | W_PCTL_OE0; | |
871 | card->xaddr = 0x00;/* all sw off */ | |
872 | if (card->fmask & pots) | |
873 | card->xdata |= 0x06; /* POWER UP/ LED OFF / ALAW */ | |
874 | if (card->fmask & led) | |
875 | card->xdata |= 0x04; /* LED OFF */ | |
876 | if ((card->fmask & pots) || (card->fmask & led)) { | |
877 | WriteW6692(card, W_PCTL, card->pctl); | |
878 | WriteW6692(card, W_XADDR, card->xaddr); | |
879 | WriteW6692(card, W_XDATA, card->xdata); | |
880 | val = ReadW6692(card, W_XADDR); | |
881 | if (debug & DEBUG_HW) | |
882 | pr_notice("%s: W_XADDR=%02x\n", | |
475be4d8 | 883 | card->name, val); |
707b2ce6 KK |
884 | } |
885 | } | |
886 | } | |
887 | ||
888 | static void | |
889 | reset_w6692(struct w6692_hw *card) | |
890 | { | |
891 | WriteW6692(card, W_D_CTL, W_D_CTL_SRST); | |
892 | mdelay(10); | |
893 | WriteW6692(card, W_D_CTL, 0); | |
894 | } | |
895 | ||
896 | static int | |
897 | init_card(struct w6692_hw *card) | |
898 | { | |
899 | int cnt = 3; | |
900 | u_long flags; | |
901 | ||
902 | spin_lock_irqsave(&card->lock, flags); | |
903 | disable_hwirq(card); | |
904 | spin_unlock_irqrestore(&card->lock, flags); | |
905 | if (request_irq(card->irq, w6692_irq, IRQF_SHARED, card->name, card)) { | |
906 | pr_info("%s: couldn't get interrupt %d\n", card->name, | |
907 | card->irq); | |
908 | return -EIO; | |
909 | } | |
910 | while (cnt--) { | |
911 | spin_lock_irqsave(&card->lock, flags); | |
912 | initW6692(card); | |
913 | enable_hwirq(card); | |
914 | spin_unlock_irqrestore(&card->lock, flags); | |
915 | /* Timeout 10ms */ | |
916 | msleep_interruptible(10); | |
917 | if (debug & DEBUG_HW) | |
918 | pr_notice("%s: IRQ %d count %d\n", card->name, | |
475be4d8 | 919 | card->irq, card->irqcnt); |
707b2ce6 KK |
920 | if (!card->irqcnt) { |
921 | pr_info("%s: IRQ(%d) getting no IRQs during init %d\n", | |
922 | card->name, card->irq, 3 - cnt); | |
923 | reset_w6692(card); | |
924 | } else | |
925 | return 0; | |
926 | } | |
927 | free_irq(card->irq, card); | |
928 | return -EIO; | |
929 | } | |
930 | ||
931 | static int | |
932 | w6692_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb) | |
933 | { | |
934 | struct bchannel *bch = container_of(ch, struct bchannel, ch); | |
935 | struct w6692_ch *bc = container_of(bch, struct w6692_ch, bch); | |
936 | struct w6692_hw *card = bch->hw; | |
937 | int ret = -EINVAL; | |
938 | struct mISDNhead *hh = mISDN_HEAD_P(skb); | |
8bfddfbe | 939 | unsigned long flags; |
707b2ce6 KK |
940 | |
941 | switch (hh->prim) { | |
942 | case PH_DATA_REQ: | |
943 | spin_lock_irqsave(&card->lock, flags); | |
944 | ret = bchannel_senddata(bch, skb); | |
945 | if (ret > 0) { /* direct TX */ | |
707b2ce6 KK |
946 | ret = 0; |
947 | W6692_fill_Bfifo(bc); | |
8bfddfbe KK |
948 | } |
949 | spin_unlock_irqrestore(&card->lock, flags); | |
707b2ce6 KK |
950 | return ret; |
951 | case PH_ACTIVATE_REQ: | |
952 | spin_lock_irqsave(&card->lock, flags); | |
953 | if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags)) | |
954 | ret = w6692_mode(bc, ch->protocol); | |
955 | else | |
956 | ret = 0; | |
957 | spin_unlock_irqrestore(&card->lock, flags); | |
958 | if (!ret) | |
959 | _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 0, | |
475be4d8 | 960 | NULL, GFP_KERNEL); |
707b2ce6 KK |
961 | break; |
962 | case PH_DEACTIVATE_REQ: | |
963 | spin_lock_irqsave(&card->lock, flags); | |
964 | mISDN_clear_bchannel(bch); | |
965 | w6692_mode(bc, ISDN_P_NONE); | |
966 | spin_unlock_irqrestore(&card->lock, flags); | |
967 | _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 0, | |
475be4d8 | 968 | NULL, GFP_KERNEL); |
707b2ce6 KK |
969 | ret = 0; |
970 | break; | |
971 | default: | |
972 | pr_info("%s: %s unknown prim(%x,%x)\n", | |
973 | card->name, __func__, hh->prim, hh->id); | |
974 | ret = -EINVAL; | |
975 | } | |
976 | if (!ret) | |
977 | dev_kfree_skb(skb); | |
978 | return ret; | |
979 | } | |
980 | ||
981 | static int | |
982 | channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq) | |
983 | { | |
034005a0 | 984 | return mISDN_ctrl_bchannel(bch, cq); |
707b2ce6 KK |
985 | } |
986 | ||
987 | static int | |
988 | open_bchannel(struct w6692_hw *card, struct channel_req *rq) | |
989 | { | |
990 | struct bchannel *bch; | |
991 | ||
819a1008 | 992 | if (rq->adr.channel == 0 || rq->adr.channel > 2) |
707b2ce6 KK |
993 | return -EINVAL; |
994 | if (rq->protocol == ISDN_P_NONE) | |
995 | return -EINVAL; | |
996 | bch = &card->bc[rq->adr.channel - 1].bch; | |
997 | if (test_and_set_bit(FLG_OPEN, &bch->Flags)) | |
998 | return -EBUSY; /* b-channel can be only open once */ | |
707b2ce6 KK |
999 | bch->ch.protocol = rq->protocol; |
1000 | rq->ch = &bch->ch; | |
1001 | return 0; | |
1002 | } | |
1003 | ||
1004 | static int | |
1005 | channel_ctrl(struct w6692_hw *card, struct mISDN_ctrl_req *cq) | |
1006 | { | |
1007 | int ret = 0; | |
1008 | ||
1009 | switch (cq->op) { | |
1010 | case MISDN_CTRL_GETOP: | |
c626c127 KK |
1011 | cq->op = MISDN_CTRL_L1_TIMER3; |
1012 | break; | |
1013 | case MISDN_CTRL_L1_TIMER3: | |
1014 | ret = l1_event(card->dch.l1, HW_TIMER3_VALUE | (cq->p1 & 0xff)); | |
707b2ce6 KK |
1015 | break; |
1016 | default: | |
1017 | pr_info("%s: unknown CTRL OP %x\n", card->name, cq->op); | |
1018 | ret = -EINVAL; | |
1019 | break; | |
1020 | } | |
1021 | return ret; | |
1022 | } | |
1023 | ||
1024 | static int | |
1025 | w6692_bctrl(struct mISDNchannel *ch, u32 cmd, void *arg) | |
1026 | { | |
1027 | struct bchannel *bch = container_of(ch, struct bchannel, ch); | |
1028 | struct w6692_ch *bc = container_of(bch, struct w6692_ch, bch); | |
1029 | struct w6692_hw *card = bch->hw; | |
1030 | int ret = -EINVAL; | |
1031 | u_long flags; | |
1032 | ||
1033 | pr_debug("%s: %s cmd:%x %p\n", card->name, __func__, cmd, arg); | |
1034 | switch (cmd) { | |
1035 | case CLOSE_CHANNEL: | |
1036 | test_and_clear_bit(FLG_OPEN, &bch->Flags); | |
4b921eda | 1037 | cancel_work_sync(&bch->workq); |
1368112c | 1038 | spin_lock_irqsave(&card->lock, flags); |
4b921eda | 1039 | mISDN_clear_bchannel(bch); |
1368112c KK |
1040 | w6692_mode(bc, ISDN_P_NONE); |
1041 | spin_unlock_irqrestore(&card->lock, flags); | |
707b2ce6 KK |
1042 | ch->protocol = ISDN_P_NONE; |
1043 | ch->peer = NULL; | |
1044 | module_put(THIS_MODULE); | |
1045 | ret = 0; | |
1046 | break; | |
1047 | case CONTROL_CHANNEL: | |
1048 | ret = channel_bctrl(bch, arg); | |
1049 | break; | |
1050 | default: | |
1051 | pr_info("%s: %s unknown prim(%x)\n", | |
1052 | card->name, __func__, cmd); | |
1053 | } | |
1054 | return ret; | |
1055 | } | |
1056 | ||
1057 | static int | |
1058 | w6692_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb) | |
1059 | { | |
1060 | struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D); | |
1061 | struct dchannel *dch = container_of(dev, struct dchannel, dev); | |
1062 | struct w6692_hw *card = container_of(dch, struct w6692_hw, dch); | |
1063 | int ret = -EINVAL; | |
1064 | struct mISDNhead *hh = mISDN_HEAD_P(skb); | |
1065 | u32 id; | |
1066 | u_long flags; | |
1067 | ||
1068 | switch (hh->prim) { | |
1069 | case PH_DATA_REQ: | |
1070 | spin_lock_irqsave(&card->lock, flags); | |
1071 | ret = dchannel_senddata(dch, skb); | |
1072 | if (ret > 0) { /* direct TX */ | |
1073 | id = hh->id; /* skb can be freed */ | |
1074 | W6692_fill_Dfifo(card); | |
1075 | ret = 0; | |
1076 | spin_unlock_irqrestore(&card->lock, flags); | |
1077 | queue_ch_frame(ch, PH_DATA_CNF, id, NULL); | |
1078 | } else | |
1079 | spin_unlock_irqrestore(&card->lock, flags); | |
1080 | return ret; | |
1081 | case PH_ACTIVATE_REQ: | |
1082 | ret = l1_event(dch->l1, hh->prim); | |
1083 | break; | |
1084 | case PH_DEACTIVATE_REQ: | |
1085 | test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags); | |
1086 | ret = l1_event(dch->l1, hh->prim); | |
1087 | break; | |
1088 | } | |
1089 | ||
1090 | if (!ret) | |
1091 | dev_kfree_skb(skb); | |
1092 | return ret; | |
1093 | } | |
1094 | ||
1095 | static int | |
1096 | w6692_l1callback(struct dchannel *dch, u32 cmd) | |
1097 | { | |
1098 | struct w6692_hw *card = container_of(dch, struct w6692_hw, dch); | |
1099 | u_long flags; | |
1100 | ||
1101 | pr_debug("%s: cmd(%x) state(%02x)\n", card->name, cmd, card->state); | |
1102 | switch (cmd) { | |
1103 | case INFO3_P8: | |
1104 | spin_lock_irqsave(&card->lock, flags); | |
1105 | ph_command(card, W_L1CMD_AR8); | |
1106 | spin_unlock_irqrestore(&card->lock, flags); | |
1107 | break; | |
1108 | case INFO3_P10: | |
1109 | spin_lock_irqsave(&card->lock, flags); | |
1110 | ph_command(card, W_L1CMD_AR10); | |
1111 | spin_unlock_irqrestore(&card->lock, flags); | |
1112 | break; | |
1113 | case HW_RESET_REQ: | |
1114 | spin_lock_irqsave(&card->lock, flags); | |
1115 | if (card->state != W_L1IND_DRD) | |
1116 | ph_command(card, W_L1CMD_RST); | |
1117 | ph_command(card, W_L1CMD_ECK); | |
1118 | spin_unlock_irqrestore(&card->lock, flags); | |
1119 | break; | |
1120 | case HW_DEACT_REQ: | |
1121 | skb_queue_purge(&dch->squeue); | |
1122 | if (dch->tx_skb) { | |
1123 | dev_kfree_skb(dch->tx_skb); | |
1124 | dch->tx_skb = NULL; | |
1125 | } | |
1126 | dch->tx_idx = 0; | |
1127 | if (dch->rx_skb) { | |
1128 | dev_kfree_skb(dch->rx_skb); | |
1129 | dch->rx_skb = NULL; | |
1130 | } | |
1131 | test_and_clear_bit(FLG_TX_BUSY, &dch->Flags); | |
1132 | if (test_and_clear_bit(FLG_BUSY_TIMER, &dch->Flags)) | |
1133 | del_timer(&dch->timer); | |
1134 | break; | |
1135 | case HW_POWERUP_REQ: | |
1136 | spin_lock_irqsave(&card->lock, flags); | |
1137 | ph_command(card, W_L1CMD_ECK); | |
1138 | spin_unlock_irqrestore(&card->lock, flags); | |
1139 | break; | |
1140 | case PH_ACTIVATE_IND: | |
1141 | test_and_set_bit(FLG_ACTIVE, &dch->Flags); | |
1142 | _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL, | |
475be4d8 | 1143 | GFP_ATOMIC); |
707b2ce6 KK |
1144 | break; |
1145 | case PH_DEACTIVATE_IND: | |
1146 | test_and_clear_bit(FLG_ACTIVE, &dch->Flags); | |
1147 | _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL, | |
475be4d8 | 1148 | GFP_ATOMIC); |
707b2ce6 KK |
1149 | break; |
1150 | default: | |
1151 | pr_debug("%s: %s unknown command %x\n", card->name, | |
475be4d8 | 1152 | __func__, cmd); |
707b2ce6 KK |
1153 | return -1; |
1154 | } | |
1155 | return 0; | |
1156 | } | |
1157 | ||
1158 | static int | |
3e7a8716 | 1159 | open_dchannel(struct w6692_hw *card, struct channel_req *rq, void *caller) |
707b2ce6 KK |
1160 | { |
1161 | pr_debug("%s: %s dev(%d) open from %p\n", card->name, __func__, | |
3e7a8716 | 1162 | card->dch.dev.id, caller); |
707b2ce6 KK |
1163 | if (rq->protocol != ISDN_P_TE_S0) |
1164 | return -EINVAL; | |
1165 | if (rq->adr.channel == 1) | |
1166 | /* E-Channel not supported */ | |
1167 | return -EINVAL; | |
1168 | rq->ch = &card->dch.dev.D; | |
1169 | rq->ch->protocol = rq->protocol; | |
1170 | if (card->dch.state == 7) | |
1171 | _queue_data(rq->ch, PH_ACTIVATE_IND, MISDN_ID_ANY, | |
475be4d8 | 1172 | 0, NULL, GFP_KERNEL); |
707b2ce6 KK |
1173 | return 0; |
1174 | } | |
1175 | ||
1176 | static int | |
1177 | w6692_dctrl(struct mISDNchannel *ch, u32 cmd, void *arg) | |
1178 | { | |
1179 | struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D); | |
1180 | struct dchannel *dch = container_of(dev, struct dchannel, dev); | |
1181 | struct w6692_hw *card = container_of(dch, struct w6692_hw, dch); | |
1182 | struct channel_req *rq; | |
1183 | int err = 0; | |
1184 | ||
1185 | pr_debug("%s: DCTRL: %x %p\n", card->name, cmd, arg); | |
1186 | switch (cmd) { | |
1187 | case OPEN_CHANNEL: | |
1188 | rq = arg; | |
1189 | if (rq->protocol == ISDN_P_TE_S0) | |
3e7a8716 | 1190 | err = open_dchannel(card, rq, __builtin_return_address(0)); |
707b2ce6 KK |
1191 | else |
1192 | err = open_bchannel(card, rq); | |
1193 | if (err) | |
1194 | break; | |
1195 | if (!try_module_get(THIS_MODULE)) | |
1196 | pr_info("%s: cannot get module\n", card->name); | |
1197 | break; | |
1198 | case CLOSE_CHANNEL: | |
1199 | pr_debug("%s: dev(%d) close from %p\n", card->name, | |
475be4d8 | 1200 | dch->dev.id, __builtin_return_address(0)); |
707b2ce6 KK |
1201 | module_put(THIS_MODULE); |
1202 | break; | |
1203 | case CONTROL_CHANNEL: | |
1204 | err = channel_ctrl(card, arg); | |
1205 | break; | |
1206 | default: | |
1207 | pr_debug("%s: unknown DCTRL command %x\n", card->name, cmd); | |
1208 | return -EINVAL; | |
1209 | } | |
1210 | return err; | |
1211 | } | |
1212 | ||
70034918 | 1213 | static int |
707b2ce6 KK |
1214 | setup_w6692(struct w6692_hw *card) |
1215 | { | |
1216 | u32 val; | |
1217 | ||
1218 | if (!request_region(card->addr, 256, card->name)) { | |
1219 | pr_info("%s: config port %x-%x already in use\n", card->name, | |
475be4d8 | 1220 | card->addr, card->addr + 255); |
707b2ce6 KK |
1221 | return -EIO; |
1222 | } | |
1223 | W6692Version(card); | |
1224 | card->bc[0].addr = card->addr; | |
1225 | card->bc[1].addr = card->addr + 0x40; | |
1226 | val = ReadW6692(card, W_ISTA); | |
1227 | if (debug & DEBUG_HW) | |
1228 | pr_notice("%s ISTA=%02x\n", card->name, val); | |
1229 | val = ReadW6692(card, W_IMASK); | |
1230 | if (debug & DEBUG_HW) | |
1231 | pr_notice("%s IMASK=%02x\n", card->name, val); | |
1232 | val = ReadW6692(card, W_D_EXIR); | |
1233 | if (debug & DEBUG_HW) | |
1234 | pr_notice("%s D_EXIR=%02x\n", card->name, val); | |
1235 | val = ReadW6692(card, W_D_EXIM); | |
1236 | if (debug & DEBUG_HW) | |
1237 | pr_notice("%s D_EXIM=%02x\n", card->name, val); | |
1238 | val = ReadW6692(card, W_D_RSTA); | |
1239 | if (debug & DEBUG_HW) | |
1240 | pr_notice("%s D_RSTA=%02x\n", card->name, val); | |
1241 | return 0; | |
1242 | } | |
1243 | ||
1244 | static void | |
1245 | release_card(struct w6692_hw *card) | |
1246 | { | |
1247 | u_long flags; | |
1248 | ||
1249 | spin_lock_irqsave(&card->lock, flags); | |
1250 | disable_hwirq(card); | |
1251 | w6692_mode(&card->bc[0], ISDN_P_NONE); | |
1252 | w6692_mode(&card->bc[1], ISDN_P_NONE); | |
1253 | if ((card->fmask & led) || card->subtype == W6692_USR) { | |
1254 | card->xdata |= 0x04; /* LED OFF */ | |
1255 | WriteW6692(card, W_XDATA, card->xdata); | |
1256 | } | |
1257 | spin_unlock_irqrestore(&card->lock, flags); | |
1258 | free_irq(card->irq, card); | |
1259 | l1_event(card->dch.l1, CLOSE_CHANNEL); | |
1260 | mISDN_unregister_device(&card->dch.dev); | |
1261 | release_region(card->addr, 256); | |
1262 | mISDN_freebchannel(&card->bc[1].bch); | |
1263 | mISDN_freebchannel(&card->bc[0].bch); | |
1264 | mISDN_freedchannel(&card->dch); | |
1265 | write_lock_irqsave(&card_lock, flags); | |
1266 | list_del(&card->list); | |
1267 | write_unlock_irqrestore(&card_lock, flags); | |
1268 | pci_disable_device(card->pdev); | |
1269 | pci_set_drvdata(card->pdev, NULL); | |
1270 | kfree(card); | |
1271 | } | |
1272 | ||
1273 | static int | |
1274 | setup_instance(struct w6692_hw *card) | |
1275 | { | |
1276 | int i, err; | |
1277 | u_long flags; | |
1278 | ||
1279 | snprintf(card->name, MISDN_MAX_IDLEN - 1, "w6692.%d", w6692_cnt + 1); | |
1280 | write_lock_irqsave(&card_lock, flags); | |
1281 | list_add_tail(&card->list, &Cards); | |
1282 | write_unlock_irqrestore(&card_lock, flags); | |
1283 | card->fmask = (1 << w6692_cnt); | |
1284 | _set_debug(card); | |
1285 | spin_lock_init(&card->lock); | |
1286 | mISDN_initdchannel(&card->dch, MAX_DFRAME_LEN_L1, W6692_ph_bh); | |
1287 | card->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0); | |
1288 | card->dch.dev.D.send = w6692_l2l1D; | |
1289 | card->dch.dev.D.ctrl = w6692_dctrl; | |
1290 | card->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) | | |
1291 | (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK)); | |
1292 | card->dch.hw = card; | |
1293 | card->dch.dev.nrbchan = 2; | |
1294 | for (i = 0; i < 2; i++) { | |
034005a0 KK |
1295 | mISDN_initbchannel(&card->bc[i].bch, MAX_DATA_MEM, |
1296 | W_B_FIFO_THRESH); | |
707b2ce6 KK |
1297 | card->bc[i].bch.hw = card; |
1298 | card->bc[i].bch.nr = i + 1; | |
1299 | card->bc[i].bch.ch.nr = i + 1; | |
1300 | card->bc[i].bch.ch.send = w6692_l2l1B; | |
1301 | card->bc[i].bch.ch.ctrl = w6692_bctrl; | |
1302 | set_channelmap(i + 1, card->dch.dev.channelmap); | |
1303 | list_add(&card->bc[i].bch.ch.list, &card->dch.dev.bchannels); | |
1304 | } | |
1305 | err = setup_w6692(card); | |
1306 | if (err) | |
1307 | goto error_setup; | |
1308 | err = mISDN_register_device(&card->dch.dev, &card->pdev->dev, | |
475be4d8 | 1309 | card->name); |
707b2ce6 KK |
1310 | if (err) |
1311 | goto error_reg; | |
1312 | err = init_card(card); | |
1313 | if (err) | |
1314 | goto error_init; | |
1315 | err = create_l1(&card->dch, w6692_l1callback); | |
1316 | if (!err) { | |
1317 | w6692_cnt++; | |
1318 | pr_notice("W6692 %d cards installed\n", w6692_cnt); | |
1319 | return 0; | |
1320 | } | |
1321 | ||
1322 | free_irq(card->irq, card); | |
1323 | error_init: | |
1324 | mISDN_unregister_device(&card->dch.dev); | |
1325 | error_reg: | |
1326 | release_region(card->addr, 256); | |
1327 | error_setup: | |
1328 | mISDN_freebchannel(&card->bc[1].bch); | |
1329 | mISDN_freebchannel(&card->bc[0].bch); | |
1330 | mISDN_freedchannel(&card->dch); | |
1331 | write_lock_irqsave(&card_lock, flags); | |
1332 | list_del(&card->list); | |
1333 | write_unlock_irqrestore(&card_lock, flags); | |
1334 | kfree(card); | |
1335 | return err; | |
1336 | } | |
1337 | ||
ed5a84cd | 1338 | static int |
707b2ce6 KK |
1339 | w6692_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
1340 | { | |
1341 | int err = -ENOMEM; | |
1342 | struct w6692_hw *card; | |
1343 | struct w6692map *m = (struct w6692map *)ent->driver_data; | |
1344 | ||
1345 | card = kzalloc(sizeof(struct w6692_hw), GFP_KERNEL); | |
1346 | if (!card) { | |
1347 | pr_info("No kmem for w6692 card\n"); | |
1348 | return err; | |
1349 | } | |
1350 | card->pdev = pdev; | |
1351 | card->subtype = m->subtype; | |
1352 | err = pci_enable_device(pdev); | |
1353 | if (err) { | |
1354 | kfree(card); | |
1355 | return err; | |
1356 | } | |
1357 | ||
1358 | printk(KERN_INFO "mISDN_w6692: found adapter %s at %s\n", | |
1359 | m->name, pci_name(pdev)); | |
1360 | ||
1361 | card->addr = pci_resource_start(pdev, 1); | |
1362 | card->irq = pdev->irq; | |
1363 | pci_set_drvdata(pdev, card); | |
1364 | err = setup_instance(card); | |
1365 | if (err) | |
1366 | pci_set_drvdata(pdev, NULL); | |
1367 | return err; | |
1368 | } | |
1369 | ||
ed5a84cd | 1370 | static void |
707b2ce6 KK |
1371 | w6692_remove_pci(struct pci_dev *pdev) |
1372 | { | |
1373 | struct w6692_hw *card = pci_get_drvdata(pdev); | |
1374 | ||
1375 | if (card) | |
1376 | release_card(card); | |
1377 | else | |
1378 | if (debug) | |
698f9315 | 1379 | pr_notice("%s: drvdata already removed\n", __func__); |
707b2ce6 KK |
1380 | } |
1381 | ||
e8336ed0 | 1382 | static const struct pci_device_id w6692_ids[] = { |
707b2ce6 KK |
1383 | { PCI_VENDOR_ID_DYNALINK, PCI_DEVICE_ID_DYNALINK_IS64PH, |
1384 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[0]}, | |
1385 | { PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692, | |
1386 | PCI_VENDOR_ID_USR, PCI_DEVICE_ID_USR_6692, 0, 0, | |
1387 | (ulong)&w6692_map[2]}, | |
1388 | { PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692, | |
1389 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, (ulong)&w6692_map[1]}, | |
1390 | { } | |
1391 | }; | |
1392 | MODULE_DEVICE_TABLE(pci, w6692_ids); | |
1393 | ||
1394 | static struct pci_driver w6692_driver = { | |
1395 | .name = "w6692", | |
1396 | .probe = w6692_probe, | |
ed5a84cd | 1397 | .remove = w6692_remove_pci, |
707b2ce6 KK |
1398 | .id_table = w6692_ids, |
1399 | }; | |
1400 | ||
1401 | static int __init w6692_init(void) | |
1402 | { | |
1403 | int err; | |
1404 | ||
1405 | pr_notice("Winbond W6692 PCI driver Rev. %s\n", W6692_REV); | |
1406 | ||
1407 | err = pci_register_driver(&w6692_driver); | |
1408 | return err; | |
1409 | } | |
1410 | ||
1411 | static void __exit w6692_cleanup(void) | |
1412 | { | |
1413 | pci_unregister_driver(&w6692_driver); | |
1414 | } | |
1415 | ||
1416 | module_init(w6692_init); | |
1417 | module_exit(w6692_cleanup); |