1 /* enternow_pci.c,v 0.99 2001/10/02
2 *
3 * enternow_pci.c Card-specific routines for
4 * Formula-n enter:now ISDN PCI ab
5 * Gerdes AG Power ISDN PCI
6 * Woerltronic SA 16 PCI
7 * (based on HiSax driver by Karsten Keil)
8 *
9 * Author Christoph Ersfeld <info@formula-n.de>
10 * Formula-n Europe AG (www.formula-n.com)
11 * previously Gerdes AG
12 *
13 *
14 * This file is (c) under GNU PUBLIC LICENSE
15 *
16 * Notes:
17 * This driver interfaces to netjet.c which performs B-channel
18 * processing.
19 *
20 * Version 0.99 is the first release of this driver and there are
21 * certainly a few bugs.
22 * It isn't testet on linux 2.4 yet, so consider this code to be
23 * beta.
24 *
25 * Please don't report me any malfunction without sending
26 * (compressed) debug-logs.
27 * It would be nearly impossible to retrace it.
28 *
29 * Log D-channel-processing as follows:
30 *
31 * 1. Load hisax with card-specific parameters, this example ist for
32 * Formula-n enter:now ISDN PCI and compatible
33 * (f.e. Gerdes Power ISDN PCI)
34 *
35 * modprobe hisax type=41 protocol=2 id=gerdes
36 *
37 * if you chose an other value for id, you need to modify the
38 * code below, too.
39 *
40 * 2. set debug-level
41 *
42 * hisaxctrl gerdes 1 0x3ff
43 * hisaxctrl gerdes 11 0x4f
44 * cat /dev/isdnctrl >> ~/log &
45 *
46 * Please take also a look into /var/log/messages if there is
47 * anything importand concerning HISAX.
48 *
49 *
50 * Credits:
51 * Programming the driver for Formula-n enter:now ISDN PCI and
52 * neccessary the driver for the used Amd 7930 D-channel-controller
53 * was spnsored by Formula-n Europe AG.
54 * Thanks to Karsten Keil and Petr Novak, who gave me support in
55 * Hisax-specific questions.
56 * I want so say special thanks to Carl-Friedrich Braun, who had to
57 * answer a lot of questions about generally ISDN and about handling
58 * of the Amd-Chip.
59 *
60 */
61
62
63 #define __NO_VERSION__
64 #include <linux/config.h>
65 #include "hisax.h"
66 #include "isac.h"
67 #include "isdnl1.h"
68 #include "amd7930_fn.h"
69 #include "enternow.h"
70 #include <linux/interrupt.h>
71 #include <linux/ppp_defs.h>
72 #include <linux/pci.h>
73 #include <linux/init.h>
74 #include "netjet.h"
75
76
77
78 const char *enternow_pci_rev = "$Revision: 1.1.2.1 $";
79
80
81 /* *************************** I/O-Interface functions ************************************* */
82
83
84 /* cs->readisac, macro rByteAMD */
85 BYTE
ReadByteAmd7930(struct IsdnCardState * cs,BYTE offset)86 ReadByteAmd7930(struct IsdnCardState *cs, BYTE offset)
87 {
88 /* direktes Register */
89 if(offset < 8)
90 return (InByte(cs->hw.njet.isac + 4*offset));
91
92 /* indirektes Register */
93 else {
94 OutByte(cs->hw.njet.isac + 4*AMD_CR, offset);
95 return(InByte(cs->hw.njet.isac + 4*AMD_DR));
96 }
97 }
98
99 /* cs->writeisac, macro wByteAMD */
100 void
WriteByteAmd7930(struct IsdnCardState * cs,BYTE offset,BYTE value)101 WriteByteAmd7930(struct IsdnCardState *cs, BYTE offset, BYTE value)
102 {
103 /* direktes Register */
104 if(offset < 8)
105 OutByte(cs->hw.njet.isac + 4*offset, value);
106
107 /* indirektes Register */
108 else {
109 OutByte(cs->hw.njet.isac + 4*AMD_CR, offset);
110 OutByte(cs->hw.njet.isac + 4*AMD_DR, value);
111 }
112 }
113
114
115 void
enpci_setIrqMask(struct IsdnCardState * cs,BYTE val)116 enpci_setIrqMask(struct IsdnCardState *cs, BYTE val) {
117 if (!val)
118 OutByte(cs->hw.njet.base+NETJET_IRQMASK1, 0x00);
119 else
120 OutByte(cs->hw.njet.base+NETJET_IRQMASK1, TJ_AMD_IRQ);
121 }
122
123
dummyrr(struct IsdnCardState * cs,int chan,BYTE off)124 static BYTE dummyrr(struct IsdnCardState *cs, int chan, BYTE off)
125 {
126 return(5);
127 }
128
dummywr(struct IsdnCardState * cs,int chan,BYTE off,BYTE value)129 static void dummywr(struct IsdnCardState *cs, int chan, BYTE off, BYTE value)
130 {
131
132 }
133
134
135 /* ******************************************************************************** */
136
137
138 static void
reset_enpci(struct IsdnCardState * cs)139 reset_enpci(struct IsdnCardState *cs)
140 {
141 long flags;
142
143 if (cs->debug & L1_DEB_ISAC)
144 debugl1(cs, "enter:now PCI: reset");
145
146 save_flags(flags);
147 sti();
148 /* Reset on, (also for AMD) */
149 cs->hw.njet.ctrl_reg = 0x07;
150 OutByte(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
151 set_current_state(TASK_UNINTERRUPTIBLE);
152 /* 80 ms delay */
153 schedule_timeout((80*HZ)/1000);
154 /* Reset off */
155 cs->hw.njet.ctrl_reg = 0x70;
156 OutByte(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
157 set_current_state(TASK_UNINTERRUPTIBLE);
158 /* 80ms delay */
159 schedule_timeout((80*HZ)/1000);
160 restore_flags(flags);
161 cs->hw.njet.auxd = 0; // LED-status
162 cs->hw.njet.dmactrl = 0;
163 OutByte(cs->hw.njet.base + NETJET_AUXCTRL, ~TJ_AMD_IRQ);
164 OutByte(cs->hw.njet.base + NETJET_IRQMASK1, TJ_AMD_IRQ);
165 OutByte(cs->hw.njet.auxa, cs->hw.njet.auxd); // LED off
166
167 }
168
169
170 static int
enpci_card_msg(struct IsdnCardState * cs,int mt,void * arg)171 enpci_card_msg(struct IsdnCardState *cs, int mt, void *arg)
172 {
173 BYTE *chan;
174
175 if (cs->debug & L1_DEB_ISAC)
176 debugl1(cs, "enter:now PCI: card_msg: 0x%04X", mt);
177
178 switch (mt) {
179 case CARD_RESET:
180 reset_enpci(cs);
181 Amd7930_init(cs);
182 break;
183 case CARD_RELEASE:
184 release_io_netjet(cs);
185 break;
186 case CARD_INIT:
187 inittiger(cs);
188 Amd7930_init(cs);
189 break;
190 case CARD_TEST:
191 break;
192 case MDL_ASSIGN:
193 /* TEI assigned, LED1 on */
194 cs->hw.njet.auxd = TJ_AMD_IRQ << 1;
195 OutByte(cs->hw.njet.base + NETJET_AUXDATA, cs->hw.njet.auxd);
196 break;
197 case MDL_REMOVE:
198 /* TEI removed, LEDs off */
199 cs->hw.njet.auxd = 0;
200 OutByte(cs->hw.njet.base + NETJET_AUXDATA, 0x00);
201 break;
202 case MDL_BC_ASSIGN:
203 /* activate B-channel */
204 chan = (BYTE *)arg;
205
206 if (cs->debug & L1_DEB_ISAC)
207 debugl1(cs, "enter:now PCI: assign phys. BC %d in AMD LMR1", *chan);
208
209 cs->dc.amd7930.ph_command(cs, (cs->dc.amd7930.lmr1 | (*chan + 1)), "MDL_BC_ASSIGN");
210 /* at least one b-channel in use, LED 2 on */
211 cs->hw.njet.auxd |= TJ_AMD_IRQ << 2;
212 OutByte(cs->hw.njet.base + NETJET_AUXDATA, cs->hw.njet.auxd);
213 break;
214 case MDL_BC_RELEASE:
215 /* deactivate B-channel */
216 chan = (BYTE *)arg;
217
218 if (cs->debug & L1_DEB_ISAC)
219 debugl1(cs, "enter:now PCI: release phys. BC %d in Amd LMR1", *chan);
220
221 cs->dc.amd7930.ph_command(cs, (cs->dc.amd7930.lmr1 & ~(*chan + 1)), "MDL_BC_RELEASE");
222 /* no b-channel active -> LED2 off */
223 if (!(cs->dc.amd7930.lmr1 & 3)) {
224 cs->hw.njet.auxd &= ~(TJ_AMD_IRQ << 2);
225 OutByte(cs->hw.njet.base + NETJET_AUXDATA, cs->hw.njet.auxd);
226 }
227 break;
228 default:
229 break;
230
231 }
232 return(0);
233 }
234
235
236 static void
enpci_interrupt(int intno,void * dev_id,struct pt_regs * regs)237 enpci_interrupt(int intno, void *dev_id, struct pt_regs *regs)
238 {
239 struct IsdnCardState *cs = dev_id;
240 BYTE sval, ir;
241 long flags;
242
243
244 if (!cs) {
245 printk(KERN_WARNING "enter:now PCI: Spurious interrupt!\n");
246 return;
247 }
248
249 sval = InByte(cs->hw.njet.base + NETJET_IRQSTAT1);
250
251 /* AMD threw an interrupt */
252 if (!(sval & TJ_AMD_IRQ)) {
253 /* read and clear interrupt-register */
254 ir = ReadByteAmd7930(cs, 0x00);
255 Amd7930_interrupt(cs, ir);
256 }
257
258 /* DMA-Interrupt: B-channel-stuff */
259 /* set bits in sval to indicate which page is free */
260
261 save_flags(flags);
262 cli();
263 /* set bits in sval to indicate which page is free */
264 if (inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR) <
265 inl(cs->hw.njet.base + NETJET_DMA_WRITE_IRQ))
266 /* the 2nd write page is free */
267 sval = 0x08;
268 else /* the 1st write page is free */
269 sval = 0x04;
270 if (inl(cs->hw.njet.base + NETJET_DMA_READ_ADR) <
271 inl(cs->hw.njet.base + NETJET_DMA_READ_IRQ))
272 /* the 2nd read page is free */
273 sval = sval | 0x02;
274 else /* the 1st read page is free */
275 sval = sval | 0x01;
276 if (sval != cs->hw.njet.last_is0) /* we have a DMA interrupt */
277 {
278 if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
279 restore_flags(flags);
280 return;
281 }
282 cs->hw.njet.irqstat0 = sval;
283 restore_flags(flags);
284 if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_READ) !=
285 (cs->hw.njet.last_is0 & NETJET_IRQM0_READ))
286 /* we have a read dma int */
287 read_tiger(cs);
288 if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE) !=
289 (cs->hw.njet.last_is0 & NETJET_IRQM0_WRITE))
290 /* we have a write dma int */
291 write_tiger(cs);
292 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
293 } else
294 restore_flags(flags);
295 }
296
297
298 static struct pci_dev *dev_netjet __initdata = NULL;
299
300 /* called by config.c */
301 int __init
setup_enternow_pci(struct IsdnCard * card)302 setup_enternow_pci(struct IsdnCard *card)
303 {
304 int bytecnt;
305 struct IsdnCardState *cs = card->cs;
306 char tmp[64];
307 long flags;
308
309 #if CONFIG_PCI
310 #ifdef __BIG_ENDIAN
311 #error "not running on big endian machines now"
312 #endif
313 strcpy(tmp, enternow_pci_rev);
314 printk(KERN_INFO "HiSax: Formula-n Europe AG enter:now ISDN PCI driver Rev. %s\n", HiSax_getrev(tmp));
315 if (cs->typ != ISDN_CTYPE_ENTERNOW)
316 return(0);
317 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
318
319 for ( ;; )
320 {
321 if (!pci_present()) {
322 printk(KERN_ERR "enter:now PCI: no PCI bus present\n");
323 return(0);
324 }
325 if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
326 PCI_DEVICE_ID_TIGERJET_300, dev_netjet))) {
327 if (pci_enable_device(dev_netjet))
328 return(0);
329 cs->irq = dev_netjet->irq;
330 if (!cs->irq) {
331 printk(KERN_WARNING "enter:now PCI: No IRQ for PCI card found\n");
332 return(0);
333 }
334 cs->hw.njet.base = pci_resource_start(dev_netjet, 0);
335 if (!cs->hw.njet.base) {
336 printk(KERN_WARNING "enter:now PCI: No IO-Adr for PCI card found\n");
337 return(0);
338 }
339 /* checks Sub-Vendor ID because system crashes with Traverse-Card */
340 if ((dev_netjet->subsystem_vendor != 0x55) ||
341 (dev_netjet->subsystem_device != 0x02)) {
342 printk(KERN_WARNING "enter:now: You tried to load this driver with an incompatible TigerJet-card\n");
343 printk(KERN_WARNING "Use type=20 for Traverse NetJet PCI Card.\n");
344 return(0);
345 }
346 } else {
347 printk(KERN_WARNING "enter:now PCI: No PCI card found\n");
348 return(0);
349 }
350
351 cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA;
352 cs->hw.njet.isac = cs->hw.njet.base + 0xC0; // Fenster zum AMD
353
354 save_flags(flags);
355 sti();
356
357 /* Reset an */
358 cs->hw.njet.ctrl_reg = 0x07; // ge�ndert von 0xff
359 OutByte(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
360
361 set_current_state(TASK_UNINTERRUPTIBLE);
362 /* 50 ms Pause */
363 schedule_timeout((50*HZ)/1000);
364
365 cs->hw.njet.ctrl_reg = 0x30; /* Reset Off and status read clear */
366 OutByte(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
367
368 set_current_state(TASK_UNINTERRUPTIBLE);
369 schedule_timeout((10*HZ)/1000); /* Timeout 10ms */
370
371 restore_flags(flags);
372
373 cs->hw.njet.auxd = 0x00; // war 0xc0
374 cs->hw.njet.dmactrl = 0;
375
376 OutByte(cs->hw.njet.base + NETJET_AUXCTRL, ~TJ_AMD_IRQ);
377 OutByte(cs->hw.njet.base + NETJET_IRQMASK1, TJ_AMD_IRQ);
378 OutByte(cs->hw.njet.auxa, cs->hw.njet.auxd);
379
380 break;
381 }
382 #else
383
384 printk(KERN_WARNING "enter:now PCI: NO_PCI_BIOS\n");
385 printk(KERN_WARNING "enter:now PCI: unable to config Formula-n enter:now ISDN PCI ab\n");
386 return (0);
387
388 #endif /* CONFIG_PCI */
389
390 bytecnt = 256;
391
392 printk(KERN_INFO
393 "enter:now PCI: PCI card configured at 0x%lx IRQ %d\n",
394 cs->hw.njet.base, cs->irq);
395 if (check_region(cs->hw.njet.base, bytecnt)) {
396 printk(KERN_WARNING
397 "HiSax: %s config port %lx-%lx already in use\n",
398 CardType[card->typ],
399 cs->hw.njet.base,
400 cs->hw.njet.base + bytecnt);
401 return (0);
402 } else {
403 request_region(cs->hw.njet.base, bytecnt, "Fn_ISDN");
404 }
405 reset_enpci(cs);
406 cs->hw.njet.last_is0 = 0;
407 /* macro rByteAMD */
408 cs->readisac = &ReadByteAmd7930;
409 /* macro wByteAMD */
410 cs->writeisac = &WriteByteAmd7930;
411 cs->dc.amd7930.setIrqMask = &enpci_setIrqMask;
412
413 cs->BC_Read_Reg = &dummyrr;
414 cs->BC_Write_Reg = &dummywr;
415 cs->BC_Send_Data = &netjet_fill_dma;
416 cs->cardmsg = &enpci_card_msg;
417 cs->irq_func = &enpci_interrupt;
418 cs->irq_flags |= SA_SHIRQ;
419
420 return (1);
421 }
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