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1da177e4 LT |
1 | /* $Id: hfc_sx.c,v 1.12.2.5 2004/02/11 13:21:33 keil Exp $ |
2 | * | |
3 | * level driver for Cologne Chip Designs hfc-s+/sp based cards | |
4 | * | |
5 | * Author Werner Cornelius | |
6 | * based on existing driver for CCD HFC PCI cards | |
7 | * Copyright by Werner Cornelius <werner@isdn4linux.de> | |
475be4d8 | 8 | * |
1da177e4 LT |
9 | * This software may be used and distributed according to the terms |
10 | * of the GNU General Public License, incorporated herein by reference. | |
11 | * | |
12 | */ | |
13 | ||
14 | #include <linux/init.h> | |
15 | #include "hisax.h" | |
16 | #include "hfc_sx.h" | |
17 | #include "isdnl1.h" | |
18 | #include <linux/interrupt.h> | |
19 | #include <linux/isapnp.h> | |
5a0e3ad6 | 20 | #include <linux/slab.h> |
1da177e4 | 21 | |
1da177e4 LT |
22 | static const char *hfcsx_revision = "$Revision: 1.12.2.5 $"; |
23 | ||
24 | /***************************************/ | |
25 | /* IRQ-table for CCDs demo board */ | |
26 | /* IRQs 6,5,10,11,12,15 are supported */ | |
27 | /***************************************/ | |
28 | ||
29 | /* Teles 16.3c Vendor Id TAG2620, Version 1.0, Vendor version 2.1 | |
30 | * | |
31 | * Thanks to Uwe Wisniewski | |
32 | * | |
33 | * ISA-SLOT Signal PIN | |
34 | * B25 IRQ3 92 IRQ_G | |
35 | * B23 IRQ5 94 IRQ_A | |
36 | * B4 IRQ2/9 95 IRQ_B | |
37 | * D3 IRQ10 96 IRQ_C | |
38 | * D4 IRQ11 97 IRQ_D | |
39 | * D5 IRQ12 98 IRQ_E | |
40 | * D6 IRQ15 99 IRQ_F | |
41 | */ | |
42 | ||
43 | #undef CCD_DEMO_BOARD | |
44 | #ifdef CCD_DEMO_BOARD | |
45 | static u_char ccd_sp_irqtab[16] = { | |
475be4d8 | 46 | 0, 0, 0, 0, 0, 2, 1, 0, 0, 0, 3, 4, 5, 0, 0, 6 |
1da177e4 LT |
47 | }; |
48 | #else /* Teles 16.3c */ | |
49 | static u_char ccd_sp_irqtab[16] = { | |
475be4d8 | 50 | 0, 0, 0, 7, 0, 1, 0, 0, 0, 2, 3, 4, 5, 0, 0, 6 |
1da177e4 LT |
51 | }; |
52 | #endif | |
53 | #define NT_T1_COUNT 20 /* number of 3.125ms interrupts for G2 timeout */ | |
54 | ||
475be4d8 | 55 | #define byteout(addr, val) outb(val, addr) |
1da177e4 LT |
56 | #define bytein(addr) inb(addr) |
57 | ||
58 | /******************************/ | |
59 | /* In/Out access to registers */ | |
60 | /******************************/ | |
61 | static inline void | |
62 | Write_hfc(struct IsdnCardState *cs, u_char regnum, u_char val) | |
63 | { | |
475be4d8 | 64 | byteout(cs->hw.hfcsx.base + 1, regnum); |
1da177e4 | 65 | byteout(cs->hw.hfcsx.base, val); |
475be4d8 | 66 | } |
1da177e4 LT |
67 | |
68 | static inline u_char | |
69 | Read_hfc(struct IsdnCardState *cs, u_char regnum) | |
70 | { | |
475be4d8 | 71 | u_char ret; |
1da177e4 | 72 | |
475be4d8 | 73 | byteout(cs->hw.hfcsx.base + 1, regnum); |
1da177e4 | 74 | ret = bytein(cs->hw.hfcsx.base); |
475be4d8 JP |
75 | return (ret); |
76 | } | |
1da177e4 LT |
77 | |
78 | ||
79 | /**************************************************/ | |
80 | /* select a fifo and remember which one for reuse */ | |
81 | /**************************************************/ | |
82 | static void | |
83 | fifo_select(struct IsdnCardState *cs, u_char fifo) | |
84 | { | |
475be4d8 JP |
85 | if (fifo == cs->hw.hfcsx.last_fifo) |
86 | return; /* still valid */ | |
1da177e4 | 87 | |
475be4d8 | 88 | byteout(cs->hw.hfcsx.base + 1, HFCSX_FIF_SEL); |
1da177e4 | 89 | byteout(cs->hw.hfcsx.base, fifo); |
475be4d8 | 90 | while (bytein(cs->hw.hfcsx.base + 1) & 1); /* wait for busy */ |
1da177e4 LT |
91 | udelay(4); |
92 | byteout(cs->hw.hfcsx.base, fifo); | |
475be4d8 | 93 | while (bytein(cs->hw.hfcsx.base + 1) & 1); /* wait for busy */ |
1da177e4 LT |
94 | } |
95 | ||
96 | /******************************************/ | |
97 | /* reset the specified fifo to defaults. */ | |
98 | /* If its a send fifo init needed markers */ | |
99 | /******************************************/ | |
100 | static void | |
101 | reset_fifo(struct IsdnCardState *cs, u_char fifo) | |
102 | { | |
103 | fifo_select(cs, fifo); /* first select the fifo */ | |
475be4d8 | 104 | byteout(cs->hw.hfcsx.base + 1, HFCSX_CIRM); |
1da177e4 LT |
105 | byteout(cs->hw.hfcsx.base, cs->hw.hfcsx.cirm | 0x80); /* reset cmd */ |
106 | udelay(1); | |
475be4d8 JP |
107 | while (bytein(cs->hw.hfcsx.base + 1) & 1); /* wait for busy */ |
108 | } | |
1da177e4 LT |
109 | |
110 | ||
111 | /*************************************************************/ | |
112 | /* write_fifo writes the skb contents to the desired fifo */ | |
113 | /* if no space is available or an error occurs 0 is returned */ | |
114 | /* the skb is not released in any way. */ | |
115 | /*************************************************************/ | |
116 | static int | |
117 | write_fifo(struct IsdnCardState *cs, struct sk_buff *skb, u_char fifo, int trans_max) | |
118 | { | |
475be4d8 JP |
119 | unsigned short *msp; |
120 | int fifo_size, count, z1, z2; | |
1da177e4 LT |
121 | u_char f_msk, f1, f2, *src; |
122 | ||
475be4d8 JP |
123 | if (skb->len <= 0) return (0); |
124 | if (fifo & 1) return (0); /* no write fifo */ | |
1da177e4 LT |
125 | |
126 | fifo_select(cs, fifo); | |
127 | if (fifo & 4) { | |
475be4d8 JP |
128 | fifo_size = D_FIFO_SIZE; /* D-channel */ |
129 | f_msk = MAX_D_FRAMES; | |
130 | if (trans_max) return (0); /* only HDLC */ | |
1da177e4 LT |
131 | } |
132 | else { | |
475be4d8 JP |
133 | fifo_size = cs->hw.hfcsx.b_fifo_size; /* B-channel */ |
134 | f_msk = MAX_B_FRAMES; | |
1da177e4 LT |
135 | } |
136 | ||
475be4d8 | 137 | z1 = Read_hfc(cs, HFCSX_FIF_Z1H); |
1da177e4 LT |
138 | z1 = ((z1 << 8) | Read_hfc(cs, HFCSX_FIF_Z1L)); |
139 | ||
140 | /* Check for transparent mode */ | |
141 | if (trans_max) { | |
475be4d8 JP |
142 | z2 = Read_hfc(cs, HFCSX_FIF_Z2H); |
143 | z2 = ((z2 << 8) | Read_hfc(cs, HFCSX_FIF_Z2L)); | |
144 | count = z2 - z1; | |
145 | if (count <= 0) | |
146 | count += fifo_size; /* free bytes */ | |
147 | if (count < skb->len + 1) return (0); /* no room */ | |
148 | count = fifo_size - count; /* bytes still not send */ | |
149 | if (count > 2 * trans_max) return (0); /* delay to long */ | |
150 | count = skb->len; | |
151 | src = skb->data; | |
152 | while (count--) | |
153 | Write_hfc(cs, HFCSX_FIF_DWR, *src++); | |
154 | return (1); /* success */ | |
1da177e4 LT |
155 | } |
156 | ||
475be4d8 JP |
157 | msp = ((struct hfcsx_extra *)(cs->hw.hfcsx.extra))->marker; |
158 | msp += (((fifo >> 1) & 3) * (MAX_B_FRAMES + 1)); | |
1da177e4 LT |
159 | f1 = Read_hfc(cs, HFCSX_FIF_F1) & f_msk; |
160 | f2 = Read_hfc(cs, HFCSX_FIF_F2) & f_msk; | |
161 | ||
162 | count = f1 - f2; /* frame count actually buffered */ | |
163 | if (count < 0) | |
164 | count += (f_msk + 1); /* if wrap around */ | |
475be4d8 JP |
165 | if (count > f_msk - 1) { |
166 | if (cs->debug & L1_DEB_ISAC_FIFO) | |
167 | debugl1(cs, "hfcsx_write_fifo %d more as %d frames", fifo, f_msk - 1); | |
168 | return (0); | |
1da177e4 LT |
169 | } |
170 | ||
171 | *(msp + f1) = z1; /* remember marker */ | |
172 | ||
173 | if (cs->debug & L1_DEB_ISAC_FIFO) | |
174 | debugl1(cs, "hfcsx_write_fifo %d f1(%x) f2(%x) z1(f1)(%x)", | |
175 | fifo, f1, f2, z1); | |
176 | /* now determine free bytes in FIFO buffer */ | |
177 | count = *(msp + f2) - z1; | |
178 | if (count <= 0) | |
475be4d8 | 179 | count += fifo_size; /* count now contains available bytes */ |
1da177e4 LT |
180 | |
181 | if (cs->debug & L1_DEB_ISAC_FIFO) | |
475be4d8 JP |
182 | debugl1(cs, "hfcsx_write_fifo %d count(%u/%d)", |
183 | fifo, skb->len, count); | |
1da177e4 | 184 | if (count < skb->len) { |
475be4d8 JP |
185 | if (cs->debug & L1_DEB_ISAC_FIFO) |
186 | debugl1(cs, "hfcsx_write_fifo %d no fifo mem", fifo); | |
187 | return (0); | |
1da177e4 | 188 | } |
475be4d8 | 189 | |
1da177e4 LT |
190 | count = skb->len; /* get frame len */ |
191 | src = skb->data; /* source pointer */ | |
192 | while (count--) | |
475be4d8 JP |
193 | Write_hfc(cs, HFCSX_FIF_DWR, *src++); |
194 | ||
1da177e4 LT |
195 | Read_hfc(cs, HFCSX_FIF_INCF1); /* increment F1 */ |
196 | udelay(1); | |
475be4d8 JP |
197 | while (bytein(cs->hw.hfcsx.base + 1) & 1); /* wait for busy */ |
198 | return (1); | |
199 | } | |
1da177e4 LT |
200 | |
201 | /***************************************************************/ | |
202 | /* read_fifo reads data to an skb from the desired fifo */ | |
203 | /* if no data is available or an error occurs NULL is returned */ | |
204 | /* the skb is not released in any way. */ | |
205 | /***************************************************************/ | |
475be4d8 | 206 | static struct sk_buff * |
1da177e4 LT |
207 | read_fifo(struct IsdnCardState *cs, u_char fifo, int trans_max) |
208 | { int fifo_size, count, z1, z2; | |
209 | u_char f_msk, f1, f2, *dst; | |
210 | struct sk_buff *skb; | |
211 | ||
475be4d8 | 212 | if (!(fifo & 1)) return (NULL); /* no read fifo */ |
1da177e4 LT |
213 | fifo_select(cs, fifo); |
214 | if (fifo & 4) { | |
475be4d8 JP |
215 | fifo_size = D_FIFO_SIZE; /* D-channel */ |
216 | f_msk = MAX_D_FRAMES; | |
217 | if (trans_max) return (NULL); /* only hdlc */ | |
1da177e4 LT |
218 | } |
219 | else { | |
475be4d8 JP |
220 | fifo_size = cs->hw.hfcsx.b_fifo_size; /* B-channel */ |
221 | f_msk = MAX_B_FRAMES; | |
1da177e4 LT |
222 | } |
223 | ||
224 | /* transparent mode */ | |
225 | if (trans_max) { | |
475be4d8 JP |
226 | z1 = Read_hfc(cs, HFCSX_FIF_Z1H); |
227 | z1 = ((z1 << 8) | Read_hfc(cs, HFCSX_FIF_Z1L)); | |
228 | z2 = Read_hfc(cs, HFCSX_FIF_Z2H); | |
229 | z2 = ((z2 << 8) | Read_hfc(cs, HFCSX_FIF_Z2L)); | |
230 | /* now determine bytes in actual FIFO buffer */ | |
231 | count = z1 - z2; | |
232 | if (count <= 0) | |
233 | count += fifo_size; /* count now contains buffered bytes */ | |
234 | count++; | |
235 | if (count > trans_max) | |
236 | count = trans_max; /* limit length */ | |
237 | skb = dev_alloc_skb(count); | |
238 | if (skb) { | |
239 | dst = skb_put(skb, count); | |
240 | while (count--) | |
241 | *dst++ = Read_hfc(cs, HFCSX_FIF_DRD); | |
242 | return skb; | |
243 | } else | |
244 | return NULL; /* no memory */ | |
1da177e4 LT |
245 | } |
246 | ||
247 | do { | |
475be4d8 JP |
248 | f1 = Read_hfc(cs, HFCSX_FIF_F1) & f_msk; |
249 | f2 = Read_hfc(cs, HFCSX_FIF_F2) & f_msk; | |
250 | ||
251 | if (f1 == f2) return (NULL); /* no frame available */ | |
252 | ||
253 | z1 = Read_hfc(cs, HFCSX_FIF_Z1H); | |
254 | z1 = ((z1 << 8) | Read_hfc(cs, HFCSX_FIF_Z1L)); | |
255 | z2 = Read_hfc(cs, HFCSX_FIF_Z2H); | |
256 | z2 = ((z2 << 8) | Read_hfc(cs, HFCSX_FIF_Z2L)); | |
257 | ||
1da177e4 | 258 | if (cs->debug & L1_DEB_ISAC_FIFO) |
475be4d8 JP |
259 | debugl1(cs, "hfcsx_read_fifo %d f1(%x) f2(%x) z1(f2)(%x) z2(f2)(%x)", |
260 | fifo, f1, f2, z1, z2); | |
261 | /* now determine bytes in actual FIFO buffer */ | |
262 | count = z1 - z2; | |
263 | if (count <= 0) | |
264 | count += fifo_size; /* count now contains buffered bytes */ | |
265 | count++; | |
266 | ||
267 | if (cs->debug & L1_DEB_ISAC_FIFO) | |
268 | debugl1(cs, "hfcsx_read_fifo %d count %u)", | |
269 | fifo, count); | |
270 | ||
271 | if ((count > fifo_size) || (count < 4)) { | |
272 | if (cs->debug & L1_DEB_WARN) | |
465b1678 | 273 | debugl1(cs, "hfcsx_read_fifo %d packet inv. len %d ", fifo , count); |
475be4d8 JP |
274 | while (count) { |
275 | count--; /* empty fifo */ | |
276 | Read_hfc(cs, HFCSX_FIF_DRD); | |
277 | } | |
278 | skb = NULL; | |
279 | } else | |
280 | if ((skb = dev_alloc_skb(count - 3))) { | |
281 | count -= 3; | |
282 | dst = skb_put(skb, count); | |
283 | ||
284 | while (count--) | |
285 | *dst++ = Read_hfc(cs, HFCSX_FIF_DRD); | |
286 | ||
287 | Read_hfc(cs, HFCSX_FIF_DRD); /* CRC 1 */ | |
288 | Read_hfc(cs, HFCSX_FIF_DRD); /* CRC 2 */ | |
289 | if (Read_hfc(cs, HFCSX_FIF_DRD)) { | |
290 | dev_kfree_skb_irq(skb); | |
291 | if (cs->debug & L1_DEB_ISAC_FIFO) | |
292 | debugl1(cs, "hfcsx_read_fifo %d crc error", fifo); | |
293 | skb = NULL; | |
294 | } | |
295 | } else { | |
296 | printk(KERN_WARNING "HFC-SX: receive out of memory\n"); | |
297 | return (NULL); | |
298 | } | |
299 | ||
300 | Read_hfc(cs, HFCSX_FIF_INCF2); /* increment F2 */ | |
301 | udelay(1); | |
302 | while (bytein(cs->hw.hfcsx.base + 1) & 1); /* wait for busy */ | |
303 | udelay(1); | |
1da177e4 | 304 | } while (!skb); /* retry in case of crc error */ |
475be4d8 JP |
305 | return (skb); |
306 | } | |
1da177e4 LT |
307 | |
308 | /******************************************/ | |
309 | /* free hardware resources used by driver */ | |
310 | /******************************************/ | |
672c3fd9 | 311 | static void |
1da177e4 LT |
312 | release_io_hfcsx(struct IsdnCardState *cs) |
313 | { | |
314 | cs->hw.hfcsx.int_m2 = 0; /* interrupt output off ! */ | |
315 | Write_hfc(cs, HFCSX_INT_M2, cs->hw.hfcsx.int_m2); | |
316 | Write_hfc(cs, HFCSX_CIRM, HFCSX_RESET); /* Reset On */ | |
317 | msleep(30); /* Timeout 30ms */ | |
318 | Write_hfc(cs, HFCSX_CIRM, 0); /* Reset Off */ | |
319 | del_timer(&cs->hw.hfcsx.timer); | |
320 | release_region(cs->hw.hfcsx.base, 2); /* release IO-Block */ | |
321 | kfree(cs->hw.hfcsx.extra); | |
322 | cs->hw.hfcsx.extra = NULL; | |
323 | } | |
324 | ||
325 | /**********************************************************/ | |
326 | /* set_fifo_size determines the size of the RAM and FIFOs */ | |
327 | /* returning 0 -> need to reset the chip again. */ | |
328 | /**********************************************************/ | |
329 | static int set_fifo_size(struct IsdnCardState *cs) | |
330 | { | |
475be4d8 JP |
331 | |
332 | if (cs->hw.hfcsx.b_fifo_size) return (1); /* already determined */ | |
1da177e4 LT |
333 | |
334 | if ((cs->hw.hfcsx.chip >> 4) == 9) { | |
475be4d8 JP |
335 | cs->hw.hfcsx.b_fifo_size = B_FIFO_SIZE_32K; |
336 | return (1); | |
1da177e4 LT |
337 | } |
338 | ||
475be4d8 JP |
339 | cs->hw.hfcsx.b_fifo_size = B_FIFO_SIZE_8K; |
340 | cs->hw.hfcsx.cirm |= 0x10; /* only 8K of ram */ | |
341 | return (0); | |
1da177e4 LT |
342 | |
343 | } | |
344 | ||
345 | /********************************************************************************/ | |
346 | /* function called to reset the HFC SX chip. A complete software reset of chip */ | |
347 | /* and fifos is done. */ | |
348 | /********************************************************************************/ | |
349 | static void | |
350 | reset_hfcsx(struct IsdnCardState *cs) | |
351 | { | |
352 | cs->hw.hfcsx.int_m2 = 0; /* interrupt output off ! */ | |
353 | Write_hfc(cs, HFCSX_INT_M2, cs->hw.hfcsx.int_m2); | |
354 | ||
355 | printk(KERN_INFO "HFC_SX: resetting card\n"); | |
356 | while (1) { | |
475be4d8 JP |
357 | Write_hfc(cs, HFCSX_CIRM, HFCSX_RESET | cs->hw.hfcsx.cirm); /* Reset */ |
358 | mdelay(30); | |
359 | Write_hfc(cs, HFCSX_CIRM, cs->hw.hfcsx.cirm); /* Reset Off */ | |
360 | mdelay(20); | |
361 | if (Read_hfc(cs, HFCSX_STATUS) & 2) | |
362 | printk(KERN_WARNING "HFC-SX init bit busy\n"); | |
363 | cs->hw.hfcsx.last_fifo = 0xff; /* invalidate */ | |
364 | if (!set_fifo_size(cs)) continue; | |
365 | break; | |
1da177e4 LT |
366 | } |
367 | ||
368 | cs->hw.hfcsx.trm = 0 + HFCSX_BTRANS_THRESMASK; /* no echo connect , threshold */ | |
369 | Write_hfc(cs, HFCSX_TRM, cs->hw.hfcsx.trm); | |
370 | ||
371 | Write_hfc(cs, HFCSX_CLKDEL, 0x0e); /* ST-Bit delay for TE-Mode */ | |
372 | cs->hw.hfcsx.sctrl_e = HFCSX_AUTO_AWAKE; | |
373 | Write_hfc(cs, HFCSX_SCTRL_E, cs->hw.hfcsx.sctrl_e); /* S/T Auto awake */ | |
374 | cs->hw.hfcsx.bswapped = 0; /* no exchange */ | |
375 | cs->hw.hfcsx.nt_mode = 0; /* we are in TE mode */ | |
376 | cs->hw.hfcsx.ctmt = HFCSX_TIM3_125 | HFCSX_AUTO_TIMER; | |
377 | Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt); | |
378 | ||
475be4d8 JP |
379 | cs->hw.hfcsx.int_m1 = HFCSX_INTS_DTRANS | HFCSX_INTS_DREC | |
380 | HFCSX_INTS_L1STATE | HFCSX_INTS_TIMER; | |
1da177e4 LT |
381 | Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1); |
382 | ||
383 | /* Clear already pending ints */ | |
384 | if (Read_hfc(cs, HFCSX_INT_S1)); | |
385 | ||
386 | Write_hfc(cs, HFCSX_STATES, HFCSX_LOAD_STATE | 2); /* HFC ST 2 */ | |
387 | udelay(10); | |
388 | Write_hfc(cs, HFCSX_STATES, 2); /* HFC ST 2 */ | |
389 | cs->hw.hfcsx.mst_m = HFCSX_MASTER; /* HFC Master Mode */ | |
390 | ||
391 | Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m); | |
392 | cs->hw.hfcsx.sctrl = 0x40; /* set tx_lo mode, error in datasheet ! */ | |
393 | Write_hfc(cs, HFCSX_SCTRL, cs->hw.hfcsx.sctrl); | |
394 | cs->hw.hfcsx.sctrl_r = 0; | |
395 | Write_hfc(cs, HFCSX_SCTRL_R, cs->hw.hfcsx.sctrl_r); | |
396 | ||
397 | /* Init GCI/IOM2 in master mode */ | |
398 | /* Slots 0 and 1 are set for B-chan 1 and 2 */ | |
399 | /* D- and monitor/CI channel are not enabled */ | |
400 | /* STIO1 is used as output for data, B1+B2 from ST->IOM+HFC */ | |
401 | /* STIO2 is used as data input, B1+B2 from IOM->ST */ | |
25985edc | 402 | /* ST B-channel send disabled -> continuous 1s */ |
1da177e4 LT |
403 | /* The IOM slots are always enabled */ |
404 | cs->hw.hfcsx.conn = 0x36; /* set data flow directions */ | |
405 | Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn); | |
406 | Write_hfc(cs, HFCSX_B1_SSL, 0x80); /* B1-Slot 0 STIO1 out enabled */ | |
407 | Write_hfc(cs, HFCSX_B2_SSL, 0x81); /* B2-Slot 1 STIO1 out enabled */ | |
408 | Write_hfc(cs, HFCSX_B1_RSL, 0x80); /* B1-Slot 0 STIO2 in enabled */ | |
409 | Write_hfc(cs, HFCSX_B2_RSL, 0x81); /* B2-Slot 1 STIO2 in enabled */ | |
410 | ||
411 | /* Finally enable IRQ output */ | |
412 | cs->hw.hfcsx.int_m2 = HFCSX_IRQ_ENABLE; | |
413 | Write_hfc(cs, HFCSX_INT_M2, cs->hw.hfcsx.int_m2); | |
414 | if (Read_hfc(cs, HFCSX_INT_S2)); | |
415 | } | |
416 | ||
417 | /***************************************************/ | |
418 | /* Timer function called when kernel timer expires */ | |
419 | /***************************************************/ | |
420 | static void | |
421 | hfcsx_Timer(struct IsdnCardState *cs) | |
422 | { | |
423 | cs->hw.hfcsx.timer.expires = jiffies + 75; | |
424 | /* WD RESET */ | |
425 | /* WriteReg(cs, HFCD_DATA, HFCD_CTMT, cs->hw.hfcsx.ctmt | 0x80); | |
475be4d8 JP |
426 | add_timer(&cs->hw.hfcsx.timer); |
427 | */ | |
1da177e4 LT |
428 | } |
429 | ||
430 | /************************************************/ | |
431 | /* select a b-channel entry matching and active */ | |
432 | /************************************************/ | |
433 | static | |
434 | struct BCState * | |
435 | Sel_BCS(struct IsdnCardState *cs, int channel) | |
436 | { | |
437 | if (cs->bcs[0].mode && (cs->bcs[0].channel == channel)) | |
438 | return (&cs->bcs[0]); | |
439 | else if (cs->bcs[1].mode && (cs->bcs[1].channel == channel)) | |
440 | return (&cs->bcs[1]); | |
441 | else | |
442 | return (NULL); | |
443 | } | |
444 | ||
445 | /*******************************/ | |
446 | /* D-channel receive procedure */ | |
447 | /*******************************/ | |
448 | static | |
449 | int | |
450 | receive_dmsg(struct IsdnCardState *cs) | |
451 | { | |
452 | struct sk_buff *skb; | |
453 | int count = 5; | |
454 | ||
455 | if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { | |
456 | debugl1(cs, "rec_dmsg blocked"); | |
457 | return (1); | |
458 | } | |
459 | ||
460 | do { | |
475be4d8 JP |
461 | skb = read_fifo(cs, HFCSX_SEL_D_RX, 0); |
462 | if (skb) { | |
463 | skb_queue_tail(&cs->rq, skb); | |
464 | schedule_event(cs, D_RCVBUFREADY); | |
465 | } | |
1da177e4 LT |
466 | } while (--count && skb); |
467 | ||
468 | test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); | |
469 | return (1); | |
470 | } | |
471 | ||
472 | /**********************************/ | |
473 | /* B-channel main receive routine */ | |
474 | /**********************************/ | |
672c3fd9 | 475 | static void |
1da177e4 LT |
476 | main_rec_hfcsx(struct BCState *bcs) |
477 | { | |
478 | struct IsdnCardState *cs = bcs->cs; | |
479 | int count = 5; | |
480 | struct sk_buff *skb; | |
481 | ||
475be4d8 | 482 | Begin: |
1da177e4 LT |
483 | count--; |
484 | if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { | |
485 | debugl1(cs, "rec_data %d blocked", bcs->channel); | |
486 | return; | |
487 | } | |
475be4d8 | 488 | skb = read_fifo(cs, ((bcs->channel) && (!cs->hw.hfcsx.bswapped)) ? |
1da177e4 | 489 | HFCSX_SEL_B2_RX : HFCSX_SEL_B1_RX, |
475be4d8 | 490 | (bcs->mode == L1_MODE_TRANS) ? |
1da177e4 LT |
491 | HFCSX_BTRANS_THRESHOLD : 0); |
492 | ||
493 | if (skb) { | |
475be4d8 JP |
494 | skb_queue_tail(&bcs->rqueue, skb); |
495 | schedule_event(bcs, B_RCVBUFREADY); | |
1da177e4 LT |
496 | } |
497 | ||
498 | test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); | |
499 | if (count && skb) | |
500 | goto Begin; | |
501 | return; | |
502 | } | |
503 | ||
504 | /**************************/ | |
505 | /* D-channel send routine */ | |
506 | /**************************/ | |
507 | static void | |
508 | hfcsx_fill_dfifo(struct IsdnCardState *cs) | |
509 | { | |
510 | if (!cs->tx_skb) | |
511 | return; | |
512 | if (cs->tx_skb->len <= 0) | |
513 | return; | |
514 | ||
515 | if (write_fifo(cs, cs->tx_skb, HFCSX_SEL_D_TX, 0)) { | |
475be4d8 JP |
516 | dev_kfree_skb_any(cs->tx_skb); |
517 | cs->tx_skb = NULL; | |
1da177e4 LT |
518 | } |
519 | return; | |
520 | } | |
521 | ||
522 | /**************************/ | |
523 | /* B-channel send routine */ | |
524 | /**************************/ | |
525 | static void | |
526 | hfcsx_fill_fifo(struct BCState *bcs) | |
527 | { | |
528 | struct IsdnCardState *cs = bcs->cs; | |
529 | ||
530 | if (!bcs->tx_skb) | |
531 | return; | |
532 | if (bcs->tx_skb->len <= 0) | |
533 | return; | |
534 | ||
475be4d8 JP |
535 | if (write_fifo(cs, bcs->tx_skb, |
536 | ((bcs->channel) && (!cs->hw.hfcsx.bswapped)) ? | |
1da177e4 | 537 | HFCSX_SEL_B2_TX : HFCSX_SEL_B1_TX, |
475be4d8 | 538 | (bcs->mode == L1_MODE_TRANS) ? |
1da177e4 LT |
539 | HFCSX_BTRANS_THRESHOLD : 0)) { |
540 | ||
475be4d8 JP |
541 | bcs->tx_cnt -= bcs->tx_skb->len; |
542 | if (test_bit(FLG_LLI_L1WAKEUP, &bcs->st->lli.flag) && | |
543 | (PACKET_NOACK != bcs->tx_skb->pkt_type)) { | |
544 | u_long flags; | |
545 | spin_lock_irqsave(&bcs->aclock, flags); | |
546 | bcs->ackcnt += bcs->tx_skb->len; | |
547 | spin_unlock_irqrestore(&bcs->aclock, flags); | |
548 | schedule_event(bcs, B_ACKPENDING); | |
549 | } | |
550 | dev_kfree_skb_any(bcs->tx_skb); | |
551 | bcs->tx_skb = NULL; | |
552 | test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); | |
1da177e4 LT |
553 | } |
554 | } | |
555 | ||
556 | /**********************************************/ | |
557 | /* D-channel l1 state call for leased NT-mode */ | |
558 | /**********************************************/ | |
559 | static void | |
560 | dch_nt_l2l1(struct PStack *st, int pr, void *arg) | |
561 | { | |
562 | struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware; | |
563 | ||
564 | switch (pr) { | |
475be4d8 JP |
565 | case (PH_DATA | REQUEST): |
566 | case (PH_PULL | REQUEST): | |
567 | case (PH_PULL | INDICATION): | |
568 | st->l1.l1hw(st, pr, arg); | |
569 | break; | |
570 | case (PH_ACTIVATE | REQUEST): | |
571 | st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL); | |
572 | break; | |
573 | case (PH_TESTLOOP | REQUEST): | |
574 | if (1 & (long) arg) | |
575 | debugl1(cs, "PH_TEST_LOOP B1"); | |
576 | if (2 & (long) arg) | |
577 | debugl1(cs, "PH_TEST_LOOP B2"); | |
578 | if (!(3 & (long) arg)) | |
579 | debugl1(cs, "PH_TEST_LOOP DISABLED"); | |
580 | st->l1.l1hw(st, HW_TESTLOOP | REQUEST, arg); | |
581 | break; | |
582 | default: | |
583 | if (cs->debug) | |
584 | debugl1(cs, "dch_nt_l2l1 msg %04X unhandled", pr); | |
585 | break; | |
1da177e4 LT |
586 | } |
587 | } | |
588 | ||
589 | ||
590 | ||
591 | /***********************/ | |
592 | /* set/reset echo mode */ | |
593 | /***********************/ | |
594 | static int | |
475be4d8 | 595 | hfcsx_auxcmd(struct IsdnCardState *cs, isdn_ctrl *ic) |
1da177e4 LT |
596 | { |
597 | unsigned long flags; | |
598 | int i = *(unsigned int *) ic->parm.num; | |
599 | ||
600 | if ((ic->arg == 98) && | |
601 | (!(cs->hw.hfcsx.int_m1 & (HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC + HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC)))) { | |
475be4d8 | 602 | spin_lock_irqsave(&cs->lock, flags); |
1da177e4 LT |
603 | Write_hfc(cs, HFCSX_STATES, HFCSX_LOAD_STATE | 0); /* HFC ST G0 */ |
604 | udelay(10); | |
605 | cs->hw.hfcsx.sctrl |= SCTRL_MODE_NT; | |
606 | Write_hfc(cs, HFCSX_SCTRL, cs->hw.hfcsx.sctrl); /* set NT-mode */ | |
607 | udelay(10); | |
608 | Write_hfc(cs, HFCSX_STATES, HFCSX_LOAD_STATE | 1); /* HFC ST G1 */ | |
609 | udelay(10); | |
610 | Write_hfc(cs, HFCSX_STATES, 1 | HFCSX_ACTIVATE | HFCSX_DO_ACTION); | |
611 | cs->dc.hfcsx.ph_state = 1; | |
612 | cs->hw.hfcsx.nt_mode = 1; | |
613 | cs->hw.hfcsx.nt_timer = 0; | |
614 | spin_unlock_irqrestore(&cs->lock, flags); | |
615 | cs->stlist->l2.l2l1 = dch_nt_l2l1; | |
616 | debugl1(cs, "NT mode activated"); | |
617 | return (0); | |
618 | } | |
619 | if ((cs->chanlimit > 1) || (cs->hw.hfcsx.bswapped) || | |
620 | (cs->hw.hfcsx.nt_mode) || (ic->arg != 12)) | |
621 | return (-EINVAL); | |
622 | ||
623 | if (i) { | |
624 | cs->logecho = 1; | |
625 | cs->hw.hfcsx.trm |= 0x20; /* enable echo chan */ | |
626 | cs->hw.hfcsx.int_m1 |= HFCSX_INTS_B2REC; | |
627 | /* reset Channel !!!!! */ | |
628 | } else { | |
629 | cs->logecho = 0; | |
630 | cs->hw.hfcsx.trm &= ~0x20; /* disable echo chan */ | |
631 | cs->hw.hfcsx.int_m1 &= ~HFCSX_INTS_B2REC; | |
632 | } | |
633 | cs->hw.hfcsx.sctrl_r &= ~SCTRL_B2_ENA; | |
634 | cs->hw.hfcsx.sctrl &= ~SCTRL_B2_ENA; | |
635 | cs->hw.hfcsx.conn |= 0x10; /* B2-IOM -> B2-ST */ | |
636 | cs->hw.hfcsx.ctmt &= ~2; | |
637 | spin_lock_irqsave(&cs->lock, flags); | |
638 | Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt); | |
639 | Write_hfc(cs, HFCSX_SCTRL_R, cs->hw.hfcsx.sctrl_r); | |
640 | Write_hfc(cs, HFCSX_SCTRL, cs->hw.hfcsx.sctrl); | |
641 | Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn); | |
642 | Write_hfc(cs, HFCSX_TRM, cs->hw.hfcsx.trm); | |
643 | Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1); | |
644 | spin_unlock_irqrestore(&cs->lock, flags); | |
645 | return (0); | |
646 | } /* hfcsx_auxcmd */ | |
647 | ||
648 | /*****************************/ | |
649 | /* E-channel receive routine */ | |
650 | /*****************************/ | |
651 | static void | |
652 | receive_emsg(struct IsdnCardState *cs) | |
653 | { | |
654 | int count = 5; | |
655 | u_char *ptr; | |
656 | struct sk_buff *skb; | |
657 | ||
658 | if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { | |
659 | debugl1(cs, "echo_rec_data blocked"); | |
660 | return; | |
661 | } | |
662 | do { | |
475be4d8 JP |
663 | skb = read_fifo(cs, HFCSX_SEL_B2_RX, 0); |
664 | if (skb) { | |
665 | if (cs->debug & DEB_DLOG_HEX) { | |
666 | ptr = cs->dlog; | |
667 | if ((skb->len) < MAX_DLOG_SPACE / 3 - 10) { | |
668 | *ptr++ = 'E'; | |
669 | *ptr++ = 'C'; | |
670 | *ptr++ = 'H'; | |
671 | *ptr++ = 'O'; | |
672 | *ptr++ = ':'; | |
673 | ptr += QuickHex(ptr, skb->data, skb->len); | |
674 | ptr--; | |
675 | *ptr++ = '\n'; | |
676 | *ptr = 0; | |
19cebbcb | 677 | HiSax_putstatus(cs, NULL, cs->dlog); |
475be4d8 JP |
678 | } else |
679 | HiSax_putstatus(cs, "LogEcho: ", "warning Frame too big (%d)", skb->len); | |
680 | } | |
681 | dev_kfree_skb_any(skb); | |
682 | } | |
1da177e4 LT |
683 | } while (--count && skb); |
684 | ||
685 | test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); | |
686 | return; | |
687 | } /* receive_emsg */ | |
688 | ||
689 | ||
690 | /*********************/ | |
691 | /* Interrupt handler */ | |
692 | /*********************/ | |
693 | static irqreturn_t | |
7d12e780 | 694 | hfcsx_interrupt(int intno, void *dev_id) |
1da177e4 LT |
695 | { |
696 | struct IsdnCardState *cs = dev_id; | |
697 | u_char exval; | |
698 | struct BCState *bcs; | |
699 | int count = 15; | |
700 | u_long flags; | |
701 | u_char val, stat; | |
702 | ||
703 | if (!(cs->hw.hfcsx.int_m2 & 0x08)) | |
704 | return IRQ_NONE; /* not initialised */ | |
705 | ||
706 | spin_lock_irqsave(&cs->lock, flags); | |
707 | if (HFCSX_ANYINT & (stat = Read_hfc(cs, HFCSX_STATUS))) { | |
708 | val = Read_hfc(cs, HFCSX_INT_S1); | |
709 | if (cs->debug & L1_DEB_ISAC) | |
710 | debugl1(cs, "HFC-SX: stat(%02x) s1(%02x)", stat, val); | |
711 | } else { | |
712 | spin_unlock_irqrestore(&cs->lock, flags); | |
713 | return IRQ_NONE; | |
714 | } | |
715 | if (cs->debug & L1_DEB_ISAC) | |
716 | debugl1(cs, "HFC-SX irq %x %s", val, | |
717 | test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags) ? | |
718 | "locked" : "unlocked"); | |
719 | val &= cs->hw.hfcsx.int_m1; | |
720 | if (val & 0x40) { /* state machine irq */ | |
721 | exval = Read_hfc(cs, HFCSX_STATES) & 0xf; | |
722 | if (cs->debug & L1_DEB_ISAC) | |
723 | debugl1(cs, "ph_state chg %d->%d", cs->dc.hfcsx.ph_state, | |
724 | exval); | |
725 | cs->dc.hfcsx.ph_state = exval; | |
726 | schedule_event(cs, D_L1STATECHANGE); | |
727 | val &= ~0x40; | |
728 | } | |
729 | if (val & 0x80) { /* timer irq */ | |
730 | if (cs->hw.hfcsx.nt_mode) { | |
731 | if ((--cs->hw.hfcsx.nt_timer) < 0) | |
732 | schedule_event(cs, D_L1STATECHANGE); | |
733 | } | |
734 | val &= ~0x80; | |
735 | Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt | HFCSX_CLTIMER); | |
736 | } | |
737 | while (val) { | |
738 | if (test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { | |
739 | cs->hw.hfcsx.int_s1 |= val; | |
740 | spin_unlock_irqrestore(&cs->lock, flags); | |
741 | return IRQ_HANDLED; | |
742 | } | |
743 | if (cs->hw.hfcsx.int_s1 & 0x18) { | |
744 | exval = val; | |
745 | val = cs->hw.hfcsx.int_s1; | |
746 | cs->hw.hfcsx.int_s1 = exval; | |
747 | } | |
748 | if (val & 0x08) { | |
749 | if (!(bcs = Sel_BCS(cs, cs->hw.hfcsx.bswapped ? 1 : 0))) { | |
750 | if (cs->debug) | |
751 | debugl1(cs, "hfcsx spurious 0x08 IRQ"); | |
752 | } else | |
753 | main_rec_hfcsx(bcs); | |
754 | } | |
755 | if (val & 0x10) { | |
756 | if (cs->logecho) | |
757 | receive_emsg(cs); | |
758 | else if (!(bcs = Sel_BCS(cs, 1))) { | |
759 | if (cs->debug) | |
760 | debugl1(cs, "hfcsx spurious 0x10 IRQ"); | |
761 | } else | |
762 | main_rec_hfcsx(bcs); | |
763 | } | |
764 | if (val & 0x01) { | |
765 | if (!(bcs = Sel_BCS(cs, cs->hw.hfcsx.bswapped ? 1 : 0))) { | |
766 | if (cs->debug) | |
767 | debugl1(cs, "hfcsx spurious 0x01 IRQ"); | |
768 | } else { | |
769 | if (bcs->tx_skb) { | |
770 | if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { | |
771 | hfcsx_fill_fifo(bcs); | |
772 | test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); | |
773 | } else | |
774 | debugl1(cs, "fill_data %d blocked", bcs->channel); | |
775 | } else { | |
776 | if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) { | |
777 | if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { | |
778 | hfcsx_fill_fifo(bcs); | |
779 | test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); | |
780 | } else | |
781 | debugl1(cs, "fill_data %d blocked", bcs->channel); | |
782 | } else { | |
783 | schedule_event(bcs, B_XMTBUFREADY); | |
784 | } | |
785 | } | |
786 | } | |
787 | } | |
788 | if (val & 0x02) { | |
789 | if (!(bcs = Sel_BCS(cs, 1))) { | |
790 | if (cs->debug) | |
791 | debugl1(cs, "hfcsx spurious 0x02 IRQ"); | |
792 | } else { | |
793 | if (bcs->tx_skb) { | |
794 | if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { | |
795 | hfcsx_fill_fifo(bcs); | |
796 | test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); | |
797 | } else | |
798 | debugl1(cs, "fill_data %d blocked", bcs->channel); | |
799 | } else { | |
800 | if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) { | |
801 | if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { | |
802 | hfcsx_fill_fifo(bcs); | |
803 | test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); | |
804 | } else | |
805 | debugl1(cs, "fill_data %d blocked", bcs->channel); | |
806 | } else { | |
807 | schedule_event(bcs, B_XMTBUFREADY); | |
808 | } | |
809 | } | |
810 | } | |
811 | } | |
812 | if (val & 0x20) { /* receive dframe */ | |
813 | receive_dmsg(cs); | |
814 | } | |
815 | if (val & 0x04) { /* dframe transmitted */ | |
816 | if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) | |
817 | del_timer(&cs->dbusytimer); | |
818 | if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags)) | |
819 | schedule_event(cs, D_CLEARBUSY); | |
820 | if (cs->tx_skb) { | |
821 | if (cs->tx_skb->len) { | |
822 | if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { | |
823 | hfcsx_fill_dfifo(cs); | |
824 | test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); | |
825 | } else { | |
826 | debugl1(cs, "hfcsx_fill_dfifo irq blocked"); | |
827 | } | |
828 | goto afterXPR; | |
829 | } else { | |
830 | dev_kfree_skb_irq(cs->tx_skb); | |
831 | cs->tx_cnt = 0; | |
832 | cs->tx_skb = NULL; | |
833 | } | |
834 | } | |
835 | if ((cs->tx_skb = skb_dequeue(&cs->sq))) { | |
836 | cs->tx_cnt = 0; | |
837 | if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { | |
838 | hfcsx_fill_dfifo(cs); | |
839 | test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); | |
840 | } else { | |
841 | debugl1(cs, "hfcsx_fill_dfifo irq blocked"); | |
842 | } | |
843 | } else | |
844 | schedule_event(cs, D_XMTBUFREADY); | |
845 | } | |
475be4d8 | 846 | afterXPR: |
1da177e4 LT |
847 | if (cs->hw.hfcsx.int_s1 && count--) { |
848 | val = cs->hw.hfcsx.int_s1; | |
849 | cs->hw.hfcsx.int_s1 = 0; | |
850 | if (cs->debug & L1_DEB_ISAC) | |
851 | debugl1(cs, "HFC-SX irq %x loop %d", val, 15 - count); | |
852 | } else | |
853 | val = 0; | |
854 | } | |
855 | spin_unlock_irqrestore(&cs->lock, flags); | |
856 | return IRQ_HANDLED; | |
857 | } | |
858 | ||
859 | /********************************************************************/ | |
860 | /* timer callback for D-chan busy resolution. Currently no function */ | |
861 | /********************************************************************/ | |
862 | static void | |
863 | hfcsx_dbusy_timer(struct IsdnCardState *cs) | |
864 | { | |
865 | } | |
866 | ||
867 | /*************************************/ | |
868 | /* Layer 1 D-channel hardware access */ | |
869 | /*************************************/ | |
870 | static void | |
871 | HFCSX_l1hw(struct PStack *st, int pr, void *arg) | |
872 | { | |
873 | struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware; | |
874 | struct sk_buff *skb = arg; | |
875 | u_long flags; | |
876 | ||
877 | switch (pr) { | |
475be4d8 JP |
878 | case (PH_DATA | REQUEST): |
879 | if (cs->debug & DEB_DLOG_HEX) | |
880 | LogFrame(cs, skb->data, skb->len); | |
881 | if (cs->debug & DEB_DLOG_VERBOSE) | |
882 | dlogframe(cs, skb, 0); | |
883 | spin_lock_irqsave(&cs->lock, flags); | |
884 | if (cs->tx_skb) { | |
885 | skb_queue_tail(&cs->sq, skb); | |
1da177e4 | 886 | #ifdef L2FRAME_DEBUG /* psa */ |
475be4d8 JP |
887 | if (cs->debug & L1_DEB_LAPD) |
888 | Logl2Frame(cs, skb, "PH_DATA Queued", 0); | |
1da177e4 | 889 | #endif |
475be4d8 | 890 | } else { |
1da177e4 LT |
891 | cs->tx_skb = skb; |
892 | cs->tx_cnt = 0; | |
893 | #ifdef L2FRAME_DEBUG /* psa */ | |
894 | if (cs->debug & L1_DEB_LAPD) | |
475be4d8 | 895 | Logl2Frame(cs, skb, "PH_DATA", 0); |
1da177e4 LT |
896 | #endif |
897 | if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { | |
475be4d8 | 898 | hfcsx_fill_dfifo(cs); |
1da177e4 LT |
899 | test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); |
900 | } else | |
901 | debugl1(cs, "hfcsx_fill_dfifo blocked"); | |
475be4d8 JP |
902 | |
903 | } | |
904 | spin_unlock_irqrestore(&cs->lock, flags); | |
905 | break; | |
906 | case (PH_PULL | INDICATION): | |
907 | spin_lock_irqsave(&cs->lock, flags); | |
908 | if (cs->tx_skb) { | |
909 | if (cs->debug & L1_DEB_WARN) | |
910 | debugl1(cs, " l2l1 tx_skb exist this shouldn't happen"); | |
911 | skb_queue_tail(&cs->sq, skb); | |
1da177e4 LT |
912 | spin_unlock_irqrestore(&cs->lock, flags); |
913 | break; | |
475be4d8 JP |
914 | } |
915 | if (cs->debug & DEB_DLOG_HEX) | |
916 | LogFrame(cs, skb->data, skb->len); | |
917 | if (cs->debug & DEB_DLOG_VERBOSE) | |
918 | dlogframe(cs, skb, 0); | |
919 | cs->tx_skb = skb; | |
920 | cs->tx_cnt = 0; | |
1da177e4 | 921 | #ifdef L2FRAME_DEBUG /* psa */ |
475be4d8 JP |
922 | if (cs->debug & L1_DEB_LAPD) |
923 | Logl2Frame(cs, skb, "PH_DATA_PULLED", 0); | |
1da177e4 | 924 | #endif |
475be4d8 JP |
925 | if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { |
926 | hfcsx_fill_dfifo(cs); | |
927 | test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); | |
928 | } else | |
929 | debugl1(cs, "hfcsx_fill_dfifo blocked"); | |
930 | spin_unlock_irqrestore(&cs->lock, flags); | |
931 | break; | |
932 | case (PH_PULL | REQUEST): | |
933 | #ifdef L2FRAME_DEBUG /* psa */ | |
934 | if (cs->debug & L1_DEB_LAPD) | |
935 | debugl1(cs, "-> PH_REQUEST_PULL"); | |
936 | #endif | |
937 | if (!cs->tx_skb) { | |
938 | test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags); | |
939 | st->l1.l1l2(st, PH_PULL | CONFIRM, NULL); | |
940 | } else | |
941 | test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags); | |
942 | break; | |
943 | case (HW_RESET | REQUEST): | |
944 | spin_lock_irqsave(&cs->lock, flags); | |
945 | Write_hfc(cs, HFCSX_STATES, HFCSX_LOAD_STATE | 3); /* HFC ST 3 */ | |
946 | udelay(6); | |
947 | Write_hfc(cs, HFCSX_STATES, 3); /* HFC ST 2 */ | |
948 | cs->hw.hfcsx.mst_m |= HFCSX_MASTER; | |
949 | Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m); | |
950 | Write_hfc(cs, HFCSX_STATES, HFCSX_ACTIVATE | HFCSX_DO_ACTION); | |
951 | spin_unlock_irqrestore(&cs->lock, flags); | |
952 | l1_msg(cs, HW_POWERUP | CONFIRM, NULL); | |
953 | break; | |
954 | case (HW_ENABLE | REQUEST): | |
955 | spin_lock_irqsave(&cs->lock, flags); | |
956 | Write_hfc(cs, HFCSX_STATES, HFCSX_ACTIVATE | HFCSX_DO_ACTION); | |
957 | spin_unlock_irqrestore(&cs->lock, flags); | |
958 | break; | |
959 | case (HW_DEACTIVATE | REQUEST): | |
960 | spin_lock_irqsave(&cs->lock, flags); | |
961 | cs->hw.hfcsx.mst_m &= ~HFCSX_MASTER; | |
962 | Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m); | |
963 | spin_unlock_irqrestore(&cs->lock, flags); | |
964 | break; | |
965 | case (HW_INFO3 | REQUEST): | |
966 | spin_lock_irqsave(&cs->lock, flags); | |
967 | cs->hw.hfcsx.mst_m |= HFCSX_MASTER; | |
968 | Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m); | |
969 | spin_unlock_irqrestore(&cs->lock, flags); | |
970 | break; | |
971 | case (HW_TESTLOOP | REQUEST): | |
972 | spin_lock_irqsave(&cs->lock, flags); | |
973 | switch ((long) arg) { | |
974 | case (1): | |
975 | Write_hfc(cs, HFCSX_B1_SSL, 0x80); /* tx slot */ | |
976 | Write_hfc(cs, HFCSX_B1_RSL, 0x80); /* rx slot */ | |
977 | cs->hw.hfcsx.conn = (cs->hw.hfcsx.conn & ~7) | 1; | |
978 | Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn); | |
1da177e4 | 979 | break; |
475be4d8 JP |
980 | case (2): |
981 | Write_hfc(cs, HFCSX_B2_SSL, 0x81); /* tx slot */ | |
982 | Write_hfc(cs, HFCSX_B2_RSL, 0x81); /* rx slot */ | |
983 | cs->hw.hfcsx.conn = (cs->hw.hfcsx.conn & ~0x38) | 0x08; | |
984 | Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn); | |
1da177e4 LT |
985 | break; |
986 | default: | |
475be4d8 | 987 | spin_unlock_irqrestore(&cs->lock, flags); |
1da177e4 | 988 | if (cs->debug & L1_DEB_WARN) |
475be4d8 JP |
989 | debugl1(cs, "hfcsx_l1hw loop invalid %4lx", (unsigned long)arg); |
990 | return; | |
991 | } | |
992 | cs->hw.hfcsx.trm |= 0x80; /* enable IOM-loop */ | |
993 | Write_hfc(cs, HFCSX_TRM, cs->hw.hfcsx.trm); | |
994 | spin_unlock_irqrestore(&cs->lock, flags); | |
995 | break; | |
996 | default: | |
997 | if (cs->debug & L1_DEB_WARN) | |
998 | debugl1(cs, "hfcsx_l1hw unknown pr %4x", pr); | |
999 | break; | |
1da177e4 LT |
1000 | } |
1001 | } | |
1002 | ||
1003 | /***********************************************/ | |
1004 | /* called during init setting l1 stack pointer */ | |
1005 | /***********************************************/ | |
672c3fd9 | 1006 | static void |
1da177e4 LT |
1007 | setstack_hfcsx(struct PStack *st, struct IsdnCardState *cs) |
1008 | { | |
1009 | st->l1.l1hw = HFCSX_l1hw; | |
1010 | } | |
1011 | ||
1012 | /**************************************/ | |
1013 | /* send B-channel data if not blocked */ | |
1014 | /**************************************/ | |
1015 | static void | |
1016 | hfcsx_send_data(struct BCState *bcs) | |
1017 | { | |
1018 | struct IsdnCardState *cs = bcs->cs; | |
1019 | ||
1020 | if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { | |
475be4d8 | 1021 | hfcsx_fill_fifo(bcs); |
1da177e4 LT |
1022 | test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); |
1023 | } else | |
1024 | debugl1(cs, "send_data %d blocked", bcs->channel); | |
1025 | } | |
1026 | ||
1027 | /***************************************************************/ | |
1028 | /* activate/deactivate hardware for selected channels and mode */ | |
1029 | /***************************************************************/ | |
672c3fd9 | 1030 | static void |
1da177e4 LT |
1031 | mode_hfcsx(struct BCState *bcs, int mode, int bc) |
1032 | { | |
1033 | struct IsdnCardState *cs = bcs->cs; | |
1034 | int fifo2; | |
1035 | ||
1036 | if (cs->debug & L1_DEB_HSCX) | |
1037 | debugl1(cs, "HFCSX bchannel mode %d bchan %d/%d", | |
1038 | mode, bc, bcs->channel); | |
1039 | bcs->mode = mode; | |
1040 | bcs->channel = bc; | |
1041 | fifo2 = bc; | |
1042 | if (cs->chanlimit > 1) { | |
1043 | cs->hw.hfcsx.bswapped = 0; /* B1 and B2 normal mode */ | |
1044 | cs->hw.hfcsx.sctrl_e &= ~0x80; | |
1045 | } else { | |
1046 | if (bc) { | |
1047 | if (mode != L1_MODE_NULL) { | |
1048 | cs->hw.hfcsx.bswapped = 1; /* B1 and B2 exchanged */ | |
1049 | cs->hw.hfcsx.sctrl_e |= 0x80; | |
1050 | } else { | |
1051 | cs->hw.hfcsx.bswapped = 0; /* B1 and B2 normal mode */ | |
1052 | cs->hw.hfcsx.sctrl_e &= ~0x80; | |
1053 | } | |
1054 | fifo2 = 0; | |
1055 | } else { | |
1056 | cs->hw.hfcsx.bswapped = 0; /* B1 and B2 normal mode */ | |
1057 | cs->hw.hfcsx.sctrl_e &= ~0x80; | |
1058 | } | |
1059 | } | |
1060 | switch (mode) { | |
475be4d8 JP |
1061 | case (L1_MODE_NULL): |
1062 | if (bc) { | |
1063 | cs->hw.hfcsx.sctrl &= ~SCTRL_B2_ENA; | |
1064 | cs->hw.hfcsx.sctrl_r &= ~SCTRL_B2_ENA; | |
1065 | } else { | |
1066 | cs->hw.hfcsx.sctrl &= ~SCTRL_B1_ENA; | |
1067 | cs->hw.hfcsx.sctrl_r &= ~SCTRL_B1_ENA; | |
1068 | } | |
1069 | if (fifo2) { | |
1070 | cs->hw.hfcsx.int_m1 &= ~(HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC); | |
1071 | } else { | |
1072 | cs->hw.hfcsx.int_m1 &= ~(HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC); | |
1073 | } | |
1074 | break; | |
1075 | case (L1_MODE_TRANS): | |
1076 | if (bc) { | |
1077 | cs->hw.hfcsx.sctrl |= SCTRL_B2_ENA; | |
1078 | cs->hw.hfcsx.sctrl_r |= SCTRL_B2_ENA; | |
1079 | } else { | |
1080 | cs->hw.hfcsx.sctrl |= SCTRL_B1_ENA; | |
1081 | cs->hw.hfcsx.sctrl_r |= SCTRL_B1_ENA; | |
1082 | } | |
1083 | if (fifo2) { | |
1084 | cs->hw.hfcsx.int_m1 |= (HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC); | |
1085 | cs->hw.hfcsx.ctmt |= 2; | |
1086 | cs->hw.hfcsx.conn &= ~0x18; | |
1087 | } else { | |
1088 | cs->hw.hfcsx.int_m1 |= (HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC); | |
1089 | cs->hw.hfcsx.ctmt |= 1; | |
1090 | cs->hw.hfcsx.conn &= ~0x03; | |
1091 | } | |
1092 | break; | |
1093 | case (L1_MODE_HDLC): | |
1094 | if (bc) { | |
1095 | cs->hw.hfcsx.sctrl |= SCTRL_B2_ENA; | |
1096 | cs->hw.hfcsx.sctrl_r |= SCTRL_B2_ENA; | |
1097 | } else { | |
1098 | cs->hw.hfcsx.sctrl |= SCTRL_B1_ENA; | |
1099 | cs->hw.hfcsx.sctrl_r |= SCTRL_B1_ENA; | |
1100 | } | |
1101 | if (fifo2) { | |
1102 | cs->hw.hfcsx.int_m1 |= (HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC); | |
1103 | cs->hw.hfcsx.ctmt &= ~2; | |
1104 | cs->hw.hfcsx.conn &= ~0x18; | |
1105 | } else { | |
1106 | cs->hw.hfcsx.int_m1 |= (HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC); | |
1107 | cs->hw.hfcsx.ctmt &= ~1; | |
1108 | cs->hw.hfcsx.conn &= ~0x03; | |
1109 | } | |
1110 | break; | |
1111 | case (L1_MODE_EXTRN): | |
1112 | if (bc) { | |
1113 | cs->hw.hfcsx.conn |= 0x10; | |
1114 | cs->hw.hfcsx.sctrl |= SCTRL_B2_ENA; | |
1115 | cs->hw.hfcsx.sctrl_r |= SCTRL_B2_ENA; | |
1116 | cs->hw.hfcsx.int_m1 &= ~(HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC); | |
1117 | } else { | |
1118 | cs->hw.hfcsx.conn |= 0x02; | |
1119 | cs->hw.hfcsx.sctrl |= SCTRL_B1_ENA; | |
1120 | cs->hw.hfcsx.sctrl_r |= SCTRL_B1_ENA; | |
1121 | cs->hw.hfcsx.int_m1 &= ~(HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC); | |
1122 | } | |
1123 | break; | |
1da177e4 LT |
1124 | } |
1125 | Write_hfc(cs, HFCSX_SCTRL_E, cs->hw.hfcsx.sctrl_e); | |
1126 | Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1); | |
1127 | Write_hfc(cs, HFCSX_SCTRL, cs->hw.hfcsx.sctrl); | |
1128 | Write_hfc(cs, HFCSX_SCTRL_R, cs->hw.hfcsx.sctrl_r); | |
1129 | Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt); | |
1130 | Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn); | |
1131 | if (mode != L1_MODE_EXTRN) { | |
475be4d8 JP |
1132 | reset_fifo(cs, fifo2 ? HFCSX_SEL_B2_RX : HFCSX_SEL_B1_RX); |
1133 | reset_fifo(cs, fifo2 ? HFCSX_SEL_B2_TX : HFCSX_SEL_B1_TX); | |
1da177e4 LT |
1134 | } |
1135 | } | |
1136 | ||
1137 | /******************************/ | |
1138 | /* Layer2 -> Layer 1 Transfer */ | |
1139 | /******************************/ | |
1140 | static void | |
1141 | hfcsx_l2l1(struct PStack *st, int pr, void *arg) | |
1142 | { | |
1143 | struct BCState *bcs = st->l1.bcs; | |
1144 | struct sk_buff *skb = arg; | |
1145 | u_long flags; | |
1146 | ||
1147 | switch (pr) { | |
475be4d8 JP |
1148 | case (PH_DATA | REQUEST): |
1149 | spin_lock_irqsave(&bcs->cs->lock, flags); | |
1150 | if (bcs->tx_skb) { | |
1151 | skb_queue_tail(&bcs->squeue, skb); | |
1152 | } else { | |
1153 | bcs->tx_skb = skb; | |
1da177e4 | 1154 | // test_and_set_bit(BC_FLG_BUSY, &bcs->Flag); |
475be4d8 JP |
1155 | bcs->cs->BC_Send_Data(bcs); |
1156 | } | |
1157 | spin_unlock_irqrestore(&bcs->cs->lock, flags); | |
1158 | break; | |
1159 | case (PH_PULL | INDICATION): | |
1160 | spin_lock_irqsave(&bcs->cs->lock, flags); | |
1161 | if (bcs->tx_skb) { | |
eeb4e6d1 JL |
1162 | printk(KERN_WARNING "%s: this shouldn't happen\n", |
1163 | __func__); | |
475be4d8 | 1164 | } else { |
1da177e4 | 1165 | // test_and_set_bit(BC_FLG_BUSY, &bcs->Flag); |
475be4d8 JP |
1166 | bcs->tx_skb = skb; |
1167 | bcs->cs->BC_Send_Data(bcs); | |
1168 | } | |
1169 | spin_unlock_irqrestore(&bcs->cs->lock, flags); | |
1170 | break; | |
1171 | case (PH_PULL | REQUEST): | |
1172 | if (!bcs->tx_skb) { | |
1173 | test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags); | |
1174 | st->l1.l1l2(st, PH_PULL | CONFIRM, NULL); | |
1175 | } else | |
1176 | test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags); | |
1177 | break; | |
1178 | case (PH_ACTIVATE | REQUEST): | |
1179 | spin_lock_irqsave(&bcs->cs->lock, flags); | |
1180 | test_and_set_bit(BC_FLG_ACTIV, &bcs->Flag); | |
1181 | mode_hfcsx(bcs, st->l1.mode, st->l1.bc); | |
1182 | spin_unlock_irqrestore(&bcs->cs->lock, flags); | |
1183 | l1_msg_b(st, pr, arg); | |
1184 | break; | |
1185 | case (PH_DEACTIVATE | REQUEST): | |
1186 | l1_msg_b(st, pr, arg); | |
1187 | break; | |
1188 | case (PH_DEACTIVATE | CONFIRM): | |
1189 | spin_lock_irqsave(&bcs->cs->lock, flags); | |
1190 | test_and_clear_bit(BC_FLG_ACTIV, &bcs->Flag); | |
1191 | test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); | |
1192 | mode_hfcsx(bcs, 0, st->l1.bc); | |
1193 | spin_unlock_irqrestore(&bcs->cs->lock, flags); | |
1194 | st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL); | |
1195 | break; | |
1da177e4 LT |
1196 | } |
1197 | } | |
1198 | ||
1199 | /******************************************/ | |
1200 | /* deactivate B-channel access and queues */ | |
1201 | /******************************************/ | |
1202 | static void | |
1203 | close_hfcsx(struct BCState *bcs) | |
1204 | { | |
1205 | mode_hfcsx(bcs, 0, bcs->channel); | |
1206 | if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) { | |
1207 | skb_queue_purge(&bcs->rqueue); | |
1208 | skb_queue_purge(&bcs->squeue); | |
1209 | if (bcs->tx_skb) { | |
1210 | dev_kfree_skb_any(bcs->tx_skb); | |
1211 | bcs->tx_skb = NULL; | |
1212 | test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); | |
1213 | } | |
1214 | } | |
1215 | } | |
1216 | ||
1217 | /*************************************/ | |
1218 | /* init B-channel queues and control */ | |
1219 | /*************************************/ | |
1220 | static int | |
1221 | open_hfcsxstate(struct IsdnCardState *cs, struct BCState *bcs) | |
1222 | { | |
1223 | if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) { | |
1224 | skb_queue_head_init(&bcs->rqueue); | |
1225 | skb_queue_head_init(&bcs->squeue); | |
1226 | } | |
1227 | bcs->tx_skb = NULL; | |
1228 | test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); | |
1229 | bcs->event = 0; | |
1230 | bcs->tx_cnt = 0; | |
1231 | return (0); | |
1232 | } | |
1233 | ||
1234 | /*********************************/ | |
1235 | /* inits the stack for B-channel */ | |
1236 | /*********************************/ | |
1237 | static int | |
1238 | setstack_2b(struct PStack *st, struct BCState *bcs) | |
1239 | { | |
1240 | bcs->channel = st->l1.bc; | |
1241 | if (open_hfcsxstate(st->l1.hardware, bcs)) | |
1242 | return (-1); | |
1243 | st->l1.bcs = bcs; | |
1244 | st->l2.l2l1 = hfcsx_l2l1; | |
1245 | setstack_manager(st); | |
1246 | bcs->st = st; | |
1247 | setstack_l1_B(st); | |
1248 | return (0); | |
1249 | } | |
1250 | ||
1251 | /***************************/ | |
1252 | /* handle L1 state changes */ | |
1253 | /***************************/ | |
1254 | static void | |
c4028958 | 1255 | hfcsx_bh(struct work_struct *work) |
1da177e4 | 1256 | { |
c4028958 DH |
1257 | struct IsdnCardState *cs = |
1258 | container_of(work, struct IsdnCardState, tqueue); | |
1da177e4 LT |
1259 | u_long flags; |
1260 | ||
1da177e4 LT |
1261 | if (test_and_clear_bit(D_L1STATECHANGE, &cs->event)) { |
1262 | if (!cs->hw.hfcsx.nt_mode) | |
1263 | switch (cs->dc.hfcsx.ph_state) { | |
475be4d8 JP |
1264 | case (0): |
1265 | l1_msg(cs, HW_RESET | INDICATION, NULL); | |
1266 | break; | |
1267 | case (3): | |
1268 | l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL); | |
1269 | break; | |
1270 | case (8): | |
1271 | l1_msg(cs, HW_RSYNC | INDICATION, NULL); | |
1272 | break; | |
1273 | case (6): | |
1274 | l1_msg(cs, HW_INFO2 | INDICATION, NULL); | |
1275 | break; | |
1276 | case (7): | |
1277 | l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL); | |
1278 | break; | |
1279 | default: | |
1280 | break; | |
1281 | } else { | |
1da177e4 | 1282 | switch (cs->dc.hfcsx.ph_state) { |
475be4d8 JP |
1283 | case (2): |
1284 | spin_lock_irqsave(&cs->lock, flags); | |
1285 | if (cs->hw.hfcsx.nt_timer < 0) { | |
1da177e4 LT |
1286 | cs->hw.hfcsx.nt_timer = 0; |
1287 | cs->hw.hfcsx.int_m1 &= ~HFCSX_INTS_TIMER; | |
1288 | Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1); | |
475be4d8 JP |
1289 | /* Clear already pending ints */ |
1290 | if (Read_hfc(cs, HFCSX_INT_S1)); | |
1291 | ||
1292 | Write_hfc(cs, HFCSX_STATES, 4 | HFCSX_LOAD_STATE); | |
1293 | udelay(10); | |
1294 | Write_hfc(cs, HFCSX_STATES, 4); | |
1295 | cs->dc.hfcsx.ph_state = 4; | |
1296 | } else { | |
1297 | cs->hw.hfcsx.int_m1 |= HFCSX_INTS_TIMER; | |
1298 | Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1); | |
1299 | cs->hw.hfcsx.ctmt &= ~HFCSX_AUTO_TIMER; | |
1300 | cs->hw.hfcsx.ctmt |= HFCSX_TIM3_125; | |
1301 | Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt | HFCSX_CLTIMER); | |
1302 | Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt | HFCSX_CLTIMER); | |
1303 | cs->hw.hfcsx.nt_timer = NT_T1_COUNT; | |
1304 | Write_hfc(cs, HFCSX_STATES, 2 | HFCSX_NT_G2_G3); /* allow G2 -> G3 transition */ | |
1305 | } | |
1306 | spin_unlock_irqrestore(&cs->lock, flags); | |
1307 | break; | |
1308 | case (1): | |
1309 | case (3): | |
1310 | case (4): | |
1311 | spin_lock_irqsave(&cs->lock, flags); | |
1312 | cs->hw.hfcsx.nt_timer = 0; | |
1313 | cs->hw.hfcsx.int_m1 &= ~HFCSX_INTS_TIMER; | |
1314 | Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1); | |
1315 | spin_unlock_irqrestore(&cs->lock, flags); | |
1316 | break; | |
1317 | default: | |
1318 | break; | |
1da177e4 LT |
1319 | } |
1320 | } | |
1321 | } | |
1322 | if (test_and_clear_bit(D_RCVBUFREADY, &cs->event)) | |
1323 | DChannel_proc_rcv(cs); | |
1324 | if (test_and_clear_bit(D_XMTBUFREADY, &cs->event)) | |
1325 | DChannel_proc_xmt(cs); | |
1326 | } | |
1327 | ||
1328 | ||
1329 | /********************************/ | |
1330 | /* called for card init message */ | |
1331 | /********************************/ | |
7740ac6a | 1332 | static void inithfcsx(struct IsdnCardState *cs) |
1da177e4 LT |
1333 | { |
1334 | cs->setstack_d = setstack_hfcsx; | |
1335 | cs->BC_Send_Data = &hfcsx_send_data; | |
1336 | cs->bcs[0].BC_SetStack = setstack_2b; | |
1337 | cs->bcs[1].BC_SetStack = setstack_2b; | |
1338 | cs->bcs[0].BC_Close = close_hfcsx; | |
1339 | cs->bcs[1].BC_Close = close_hfcsx; | |
1340 | mode_hfcsx(cs->bcs, 0, 0); | |
1341 | mode_hfcsx(cs->bcs + 1, 0, 1); | |
1342 | } | |
1343 | ||
1344 | ||
1345 | ||
1346 | /*******************************************/ | |
1347 | /* handle card messages from control layer */ | |
1348 | /*******************************************/ | |
1349 | static int | |
1350 | hfcsx_card_msg(struct IsdnCardState *cs, int mt, void *arg) | |
1351 | { | |
1352 | u_long flags; | |
1353 | ||
1354 | if (cs->debug & L1_DEB_ISAC) | |
1355 | debugl1(cs, "HFCSX: card_msg %x", mt); | |
1356 | switch (mt) { | |
475be4d8 JP |
1357 | case CARD_RESET: |
1358 | spin_lock_irqsave(&cs->lock, flags); | |
1359 | reset_hfcsx(cs); | |
1360 | spin_unlock_irqrestore(&cs->lock, flags); | |
1361 | return (0); | |
1362 | case CARD_RELEASE: | |
1363 | release_io_hfcsx(cs); | |
1364 | return (0); | |
1365 | case CARD_INIT: | |
1366 | spin_lock_irqsave(&cs->lock, flags); | |
1367 | inithfcsx(cs); | |
1368 | spin_unlock_irqrestore(&cs->lock, flags); | |
1369 | msleep(80); /* Timeout 80ms */ | |
1370 | /* now switch timer interrupt off */ | |
1371 | spin_lock_irqsave(&cs->lock, flags); | |
1372 | cs->hw.hfcsx.int_m1 &= ~HFCSX_INTS_TIMER; | |
1373 | Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1); | |
1374 | /* reinit mode reg */ | |
1375 | Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m); | |
1376 | spin_unlock_irqrestore(&cs->lock, flags); | |
1377 | return (0); | |
1378 | case CARD_TEST: | |
1379 | return (0); | |
1da177e4 LT |
1380 | } |
1381 | return (0); | |
1382 | } | |
1383 | ||
1384 | #ifdef __ISAPNP__ | |
ed5a84cd | 1385 | static struct isapnp_device_id hfc_ids[] = { |
1da177e4 | 1386 | { ISAPNP_VENDOR('T', 'A', 'G'), ISAPNP_FUNCTION(0x2620), |
475be4d8 | 1387 | ISAPNP_VENDOR('T', 'A', 'G'), ISAPNP_FUNCTION(0x2620), |
1da177e4 LT |
1388 | (unsigned long) "Teles 16.3c2" }, |
1389 | { 0, } | |
1390 | }; | |
1391 | ||
ed5a84cd GKH |
1392 | static struct isapnp_device_id *ipid = &hfc_ids[0]; |
1393 | static struct pnp_card *pnp_c = NULL; | |
1da177e4 LT |
1394 | #endif |
1395 | ||
ed5a84cd | 1396 | int setup_hfcsx(struct IsdnCard *card) |
1da177e4 LT |
1397 | { |
1398 | struct IsdnCardState *cs = card->cs; | |
1399 | char tmp[64]; | |
1400 | ||
1401 | strcpy(tmp, hfcsx_revision); | |
1402 | printk(KERN_INFO "HiSax: HFC-SX driver Rev. %s\n", HiSax_getrev(tmp)); | |
1403 | #ifdef __ISAPNP__ | |
1404 | if (!card->para[1] && isapnp_present()) { | |
1405 | struct pnp_dev *pnp_d; | |
475be4d8 | 1406 | while (ipid->card_vendor) { |
1da177e4 | 1407 | if ((pnp_c = pnp_find_card(ipid->card_vendor, |
475be4d8 | 1408 | ipid->card_device, pnp_c))) { |
1da177e4 LT |
1409 | pnp_d = NULL; |
1410 | if ((pnp_d = pnp_find_dev(pnp_c, | |
475be4d8 | 1411 | ipid->vendor, ipid->function, pnp_d))) { |
1da177e4 LT |
1412 | int err; |
1413 | ||
1414 | printk(KERN_INFO "HiSax: %s detected\n", | |
475be4d8 | 1415 | (char *)ipid->driver_data); |
1da177e4 LT |
1416 | pnp_disable_dev(pnp_d); |
1417 | err = pnp_activate_dev(pnp_d); | |
475be4d8 | 1418 | if (err < 0) { |
1da177e4 | 1419 | printk(KERN_WARNING "%s: pnp_activate_dev ret(%d)\n", |
475be4d8 JP |
1420 | __func__, err); |
1421 | return (0); | |
1da177e4 LT |
1422 | } |
1423 | card->para[1] = pnp_port_start(pnp_d, 0); | |
1424 | card->para[0] = pnp_irq(pnp_d, 0); | |
1425 | if (!card->para[0] || !card->para[1]) { | |
1426 | printk(KERN_ERR "HFC PnP:some resources are missing %ld/%lx\n", | |
475be4d8 | 1427 | card->para[0], card->para[1]); |
1da177e4 | 1428 | pnp_disable_dev(pnp_d); |
475be4d8 | 1429 | return (0); |
1da177e4 LT |
1430 | } |
1431 | break; | |
1432 | } else { | |
1433 | printk(KERN_ERR "HFC PnP: PnP error card found, no device\n"); | |
1434 | } | |
1435 | } | |
1436 | ipid++; | |
1437 | pnp_c = NULL; | |
475be4d8 | 1438 | } |
1da177e4 LT |
1439 | if (!ipid->card_vendor) { |
1440 | printk(KERN_INFO "HFC PnP: no ISAPnP card found\n"); | |
475be4d8 | 1441 | return (0); |
1da177e4 LT |
1442 | } |
1443 | } | |
1444 | #endif | |
1445 | cs->hw.hfcsx.base = card->para[1] & 0xfffe; | |
1446 | cs->irq = card->para[0]; | |
1447 | cs->hw.hfcsx.int_s1 = 0; | |
1448 | cs->dc.hfcsx.ph_state = 0; | |
1449 | cs->hw.hfcsx.fifo = 255; | |
475be4d8 | 1450 | if ((cs->typ == ISDN_CTYPE_HFC_SX) || |
1da177e4 | 1451 | (cs->typ == ISDN_CTYPE_HFC_SP_PCMCIA)) { |
475be4d8 JP |
1452 | if ((!cs->hw.hfcsx.base) || !request_region(cs->hw.hfcsx.base, 2, "HFCSX isdn")) { |
1453 | printk(KERN_WARNING | |
1454 | "HiSax: HFC-SX io-base %#lx already in use\n", | |
1455 | cs->hw.hfcsx.base); | |
1456 | return (0); | |
1da177e4 LT |
1457 | } |
1458 | byteout(cs->hw.hfcsx.base, cs->hw.hfcsx.base & 0xFF); | |
1459 | byteout(cs->hw.hfcsx.base + 1, | |
1460 | ((cs->hw.hfcsx.base >> 8) & 3) | 0x54); | |
1461 | udelay(10); | |
475be4d8 JP |
1462 | cs->hw.hfcsx.chip = Read_hfc(cs, HFCSX_CHIP_ID); |
1463 | switch (cs->hw.hfcsx.chip >> 4) { | |
1464 | case 1: | |
1465 | tmp[0] = '+'; | |
1466 | break; | |
1467 | case 9: | |
1468 | tmp[0] = 'P'; | |
1469 | break; | |
1470 | default: | |
1471 | printk(KERN_WARNING | |
1472 | "HFC-SX: invalid chip id 0x%x\n", | |
1473 | cs->hw.hfcsx.chip >> 4); | |
1474 | release_region(cs->hw.hfcsx.base, 2); | |
1475 | return (0); | |
1476 | } | |
1da177e4 | 1477 | if (!ccd_sp_irqtab[cs->irq & 0xF]) { |
475be4d8 JP |
1478 | printk(KERN_WARNING |
1479 | "HFC_SX: invalid irq %d specified\n", cs->irq & 0xF); | |
1480 | release_region(cs->hw.hfcsx.base, 2); | |
1481 | return (0); | |
1482 | } | |
f754e913 | 1483 | if (!(cs->hw.hfcsx.extra = |
1da177e4 | 1484 | kmalloc(sizeof(struct hfcsx_extra), GFP_ATOMIC))) { |
475be4d8 JP |
1485 | release_region(cs->hw.hfcsx.base, 2); |
1486 | printk(KERN_WARNING "HFC-SX: unable to allocate memory\n"); | |
1487 | return (0); | |
1da177e4 LT |
1488 | } |
1489 | printk(KERN_INFO "HFC-S%c chip detected at base 0x%x IRQ %d HZ %d\n", | |
475be4d8 | 1490 | tmp[0], (u_int) cs->hw.hfcsx.base, cs->irq, HZ); |
1da177e4 LT |
1491 | cs->hw.hfcsx.int_m2 = 0; /* disable alle interrupts */ |
1492 | cs->hw.hfcsx.int_m1 = 0; | |
1493 | Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1); | |
1494 | Write_hfc(cs, HFCSX_INT_M2, cs->hw.hfcsx.int_m2); | |
1495 | } else | |
1496 | return (0); /* no valid card type */ | |
1497 | ||
aff55a36 | 1498 | setup_timer(&cs->dbusytimer, (void *)hfcsx_dbusy_timer, (long)cs); |
c4028958 | 1499 | INIT_WORK(&cs->tqueue, hfcsx_bh); |
1da177e4 LT |
1500 | cs->readisac = NULL; |
1501 | cs->writeisac = NULL; | |
1502 | cs->readisacfifo = NULL; | |
1503 | cs->writeisacfifo = NULL; | |
1504 | cs->BC_Read_Reg = NULL; | |
1505 | cs->BC_Write_Reg = NULL; | |
1506 | cs->irq_func = &hfcsx_interrupt; | |
1507 | ||
1da177e4 LT |
1508 | cs->hw.hfcsx.b_fifo_size = 0; /* fifo size still unknown */ |
1509 | cs->hw.hfcsx.cirm = ccd_sp_irqtab[cs->irq & 0xF]; /* RAM not evaluated */ | |
aff55a36 | 1510 | setup_timer(&cs->hw.hfcsx.timer, (void *)hfcsx_Timer, (long)cs); |
1da177e4 LT |
1511 | |
1512 | reset_hfcsx(cs); | |
1513 | cs->cardmsg = &hfcsx_card_msg; | |
1514 | cs->auxcmd = &hfcsx_auxcmd; | |
1515 | return (1); | |
1516 | } |