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niccy.c
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1 /* $Id: niccy.c,v 1.21.2.4 2004/01/13 23:48:39 keil Exp $
2  *
3  * low level stuff for Dr. Neuhaus NICCY PnP and NICCY PCI and
4  * compatible (SAGEM cybermodem)
5  *
6  * Author Karsten Keil
7  * Copyright by Karsten Keil <[email protected]>
8  *
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  * Thanks to Dr. Neuhaus and SAGEM for information
13  *
14  */
15 
16 #include <linux/init.h>
17 #include "hisax.h"
18 #include "isac.h"
19 #include "hscx.h"
20 #include "isdnl1.h"
21 #include <linux/pci.h>
22 #include <linux/isapnp.h>
23 
24 static const char *niccy_revision = "$Revision: 1.21.2.4 $";
25 
26 #define byteout(addr, val) outb(val, addr)
27 #define bytein(addr) inb(addr)
28 
29 #define ISAC_PCI_DATA 0
30 #define HSCX_PCI_DATA 1
31 #define ISAC_PCI_ADDR 2
32 #define HSCX_PCI_ADDR 3
33 #define ISAC_PNP 0
34 #define HSCX_PNP 1
35 
36 /* SUB Types */
37 #define NICCY_PNP 1
38 #define NICCY_PCI 2
39 
40 /* PCI stuff */
41 #define PCI_IRQ_CTRL_REG 0x38
42 #define PCI_IRQ_ENABLE 0x1f00
43 #define PCI_IRQ_DISABLE 0xff0000
44 #define PCI_IRQ_ASSERT 0x800000
45 
46 static inline u_char readreg(unsigned int ale, unsigned int adr, u_char off)
47 {
48  register u_char ret;
49 
50  byteout(ale, off);
51  ret = bytein(adr);
52  return ret;
53 }
54 
55 static inline void readfifo(unsigned int ale, unsigned int adr, u_char off,
56  u_char *data, int size)
57 {
58  byteout(ale, off);
59  insb(adr, data, size);
60 }
61 
62 static inline void writereg(unsigned int ale, unsigned int adr, u_char off,
63  u_char data)
64 {
65  byteout(ale, off);
66  byteout(adr, data);
67 }
68 
69 static inline void writefifo(unsigned int ale, unsigned int adr, u_char off,
70  u_char *data, int size)
71 {
72  byteout(ale, off);
73  outsb(adr, data, size);
74 }
75 
76 /* Interface functions */
77 
78 static u_char ReadISAC(struct IsdnCardState *cs, u_char offset)
79 {
80  return readreg(cs->hw.niccy.isac_ale, cs->hw.niccy.isac, offset);
81 }
82 
83 static void WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
84 {
85  writereg(cs->hw.niccy.isac_ale, cs->hw.niccy.isac, offset, value);
86 }
87 
88 static void ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
89 {
90  readfifo(cs->hw.niccy.isac_ale, cs->hw.niccy.isac, 0, data, size);
91 }
92 
93 static void WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
94 {
95  writefifo(cs->hw.niccy.isac_ale, cs->hw.niccy.isac, 0, data, size);
96 }
97 
98 static u_char ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
99 {
100  return readreg(cs->hw.niccy.hscx_ale,
101  cs->hw.niccy.hscx, offset + (hscx ? 0x40 : 0));
102 }
103 
104 static void WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset,
105  u_char value)
106 {
107  writereg(cs->hw.niccy.hscx_ale,
108  cs->hw.niccy.hscx, offset + (hscx ? 0x40 : 0), value);
109 }
110 
111 #define READHSCX(cs, nr, reg) readreg(cs->hw.niccy.hscx_ale, \
112  cs->hw.niccy.hscx, reg + (nr ? 0x40 : 0))
113 #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.niccy.hscx_ale, \
114  cs->hw.niccy.hscx, reg + (nr ? 0x40 : 0), data)
115 
116 #define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.niccy.hscx_ale, \
117  cs->hw.niccy.hscx, (nr ? 0x40 : 0), ptr, cnt)
118 
119 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.niccy.hscx_ale, \
120  cs->hw.niccy.hscx, (nr ? 0x40 : 0), ptr, cnt)
121 
122 #include "hscx_irq.c"
123 
124 static irqreturn_t niccy_interrupt(int intno, void *dev_id)
125 {
126  struct IsdnCardState *cs = dev_id;
127  u_char val;
128  u_long flags;
129 
130  spin_lock_irqsave(&cs->lock, flags);
131  if (cs->subtyp == NICCY_PCI) {
132  int ival;
133  ival = inl(cs->hw.niccy.cfg_reg + PCI_IRQ_CTRL_REG);
134  if (!(ival & PCI_IRQ_ASSERT)) { /* IRQ not for us (shared) */
135  spin_unlock_irqrestore(&cs->lock, flags);
136  return IRQ_NONE;
137  }
138  outl(ival, cs->hw.niccy.cfg_reg + PCI_IRQ_CTRL_REG);
139  }
140  val = readreg(cs->hw.niccy.hscx_ale, cs->hw.niccy.hscx,
141  HSCX_ISTA + 0x40);
142 Start_HSCX:
143  if (val)
144  hscx_int_main(cs, val);
145  val = readreg(cs->hw.niccy.isac_ale, cs->hw.niccy.isac, ISAC_ISTA);
146 Start_ISAC:
147  if (val)
148  isac_interrupt(cs, val);
149  val = readreg(cs->hw.niccy.hscx_ale, cs->hw.niccy.hscx,
150  HSCX_ISTA + 0x40);
151  if (val) {
152  if (cs->debug & L1_DEB_HSCX)
153  debugl1(cs, "HSCX IntStat after IntRoutine");
154  goto Start_HSCX;
155  }
156  val = readreg(cs->hw.niccy.isac_ale, cs->hw.niccy.isac, ISAC_ISTA);
157  if (val) {
158  if (cs->debug & L1_DEB_ISAC)
159  debugl1(cs, "ISAC IntStat after IntRoutine");
160  goto Start_ISAC;
161  }
162  writereg(cs->hw.niccy.hscx_ale, cs->hw.niccy.hscx, HSCX_MASK, 0xFF);
163  writereg(cs->hw.niccy.hscx_ale, cs->hw.niccy.hscx, HSCX_MASK + 0x40,
164  0xFF);
165  writereg(cs->hw.niccy.isac_ale, cs->hw.niccy.isac, ISAC_MASK, 0xFF);
166  writereg(cs->hw.niccy.isac_ale, cs->hw.niccy.isac, ISAC_MASK, 0);
167  writereg(cs->hw.niccy.hscx_ale, cs->hw.niccy.hscx, HSCX_MASK, 0);
168  writereg(cs->hw.niccy.hscx_ale, cs->hw.niccy.hscx, HSCX_MASK + 0x40, 0);
169  spin_unlock_irqrestore(&cs->lock, flags);
170  return IRQ_HANDLED;
171 }
172 
173 static void release_io_niccy(struct IsdnCardState *cs)
174 {
175  if (cs->subtyp == NICCY_PCI) {
176  int val;
177 
178  val = inl(cs->hw.niccy.cfg_reg + PCI_IRQ_CTRL_REG);
179  val &= PCI_IRQ_DISABLE;
180  outl(val, cs->hw.niccy.cfg_reg + PCI_IRQ_CTRL_REG);
181  release_region(cs->hw.niccy.cfg_reg, 0x40);
182  release_region(cs->hw.niccy.isac, 4);
183  } else {
184  release_region(cs->hw.niccy.isac, 2);
185  release_region(cs->hw.niccy.isac_ale, 2);
186  }
187 }
188 
189 static void niccy_reset(struct IsdnCardState *cs)
190 {
191  if (cs->subtyp == NICCY_PCI) {
192  int val;
193 
194  val = inl(cs->hw.niccy.cfg_reg + PCI_IRQ_CTRL_REG);
195  val |= PCI_IRQ_ENABLE;
196  outl(val, cs->hw.niccy.cfg_reg + PCI_IRQ_CTRL_REG);
197  }
198  inithscxisac(cs, 3);
199 }
200 
201 static int niccy_card_msg(struct IsdnCardState *cs, int mt, void *arg)
202 {
203  u_long flags;
204 
205  switch (mt) {
206  case CARD_RESET:
207  spin_lock_irqsave(&cs->lock, flags);
208  niccy_reset(cs);
209  spin_unlock_irqrestore(&cs->lock, flags);
210  return 0;
211  case CARD_RELEASE:
212  release_io_niccy(cs);
213  return 0;
214  case CARD_INIT:
215  spin_lock_irqsave(&cs->lock, flags);
216  niccy_reset(cs);
217  spin_unlock_irqrestore(&cs->lock, flags);
218  return 0;
219  case CARD_TEST:
220  return 0;
221  }
222  return 0;
223 }
224 
225 #ifdef __ISAPNP__
226 static struct pnp_card *pnp_c __devinitdata = NULL;
227 #endif
228 
229 int __devinit setup_niccy(struct IsdnCard *card)
230 {
231  struct IsdnCardState *cs = card->cs;
232  char tmp[64];
233 
234  strcpy(tmp, niccy_revision);
235  printk(KERN_INFO "HiSax: Niccy driver Rev. %s\n", HiSax_getrev(tmp));
236  if (cs->typ != ISDN_CTYPE_NICCY)
237  return 0;
238 #ifdef __ISAPNP__
239  if (!card->para[1] && isapnp_present()) {
240  struct pnp_dev *pnp_d = NULL;
241  int err;
242 
243  pnp_c = pnp_find_card(ISAPNP_VENDOR('S', 'D', 'A'),
244  ISAPNP_FUNCTION(0x0150), pnp_c);
245  if (pnp_c) {
246  pnp_d = pnp_find_dev(pnp_c,
247  ISAPNP_VENDOR('S', 'D', 'A'),
248  ISAPNP_FUNCTION(0x0150), pnp_d);
249  if (!pnp_d) {
250  printk(KERN_ERR "NiccyPnP: PnP error card "
251  "found, no device\n");
252  return 0;
253  }
254  pnp_disable_dev(pnp_d);
255  err = pnp_activate_dev(pnp_d);
256  if (err < 0) {
257  printk(KERN_WARNING "%s: pnp_activate_dev "
258  "ret(%d)\n", __func__, err);
259  return 0;
260  }
261  card->para[1] = pnp_port_start(pnp_d, 0);
262  card->para[2] = pnp_port_start(pnp_d, 1);
263  card->para[0] = pnp_irq(pnp_d, 0);
264  if (!card->para[0] || !card->para[1] ||
265  !card->para[2]) {
266  printk(KERN_ERR "NiccyPnP:some resources are "
267  "missing %ld/%lx/%lx\n",
268  card->para[0], card->para[1],
269  card->para[2]);
270  pnp_disable_dev(pnp_d);
271  return 0;
272  }
273  } else
274  printk(KERN_INFO "NiccyPnP: no ISAPnP card found\n");
275  }
276 #endif
277  if (card->para[1]) {
278  cs->hw.niccy.isac = card->para[1] + ISAC_PNP;
279  cs->hw.niccy.hscx = card->para[1] + HSCX_PNP;
280  cs->hw.niccy.isac_ale = card->para[2] + ISAC_PNP;
281  cs->hw.niccy.hscx_ale = card->para[2] + HSCX_PNP;
282  cs->hw.niccy.cfg_reg = 0;
283  cs->subtyp = NICCY_PNP;
284  cs->irq = card->para[0];
285  if (!request_region(cs->hw.niccy.isac, 2, "niccy data")) {
286  printk(KERN_WARNING "HiSax: NICCY data port %x-%x "
287  "already in use\n",
288  cs->hw.niccy.isac, cs->hw.niccy.isac + 1);
289  return 0;
290  }
291  if (!request_region(cs->hw.niccy.isac_ale, 2, "niccy addr")) {
292  printk(KERN_WARNING "HiSax: NICCY address port %x-%x "
293  "already in use\n",
294  cs->hw.niccy.isac_ale,
295  cs->hw.niccy.isac_ale + 1);
296  release_region(cs->hw.niccy.isac, 2);
297  return 0;
298  }
299  } else {
300 #ifdef CONFIG_PCI
301  static struct pci_dev *niccy_dev __devinitdata;
302 
303  u_int pci_ioaddr;
304  cs->subtyp = 0;
305  if ((niccy_dev = hisax_find_pci_device(PCI_VENDOR_ID_SATSAGEM,
306  PCI_DEVICE_ID_SATSAGEM_NICCY,
307  niccy_dev))) {
308  if (pci_enable_device(niccy_dev))
309  return 0;
310  /* get IRQ */
311  if (!niccy_dev->irq) {
312  printk(KERN_WARNING
313  "Niccy: No IRQ for PCI card found\n");
314  return 0;
315  }
316  cs->irq = niccy_dev->irq;
317  cs->hw.niccy.cfg_reg = pci_resource_start(niccy_dev, 0);
318  if (!cs->hw.niccy.cfg_reg) {
319  printk(KERN_WARNING
320  "Niccy: No IO-Adr for PCI cfg found\n");
321  return 0;
322  }
323  pci_ioaddr = pci_resource_start(niccy_dev, 1);
324  if (!pci_ioaddr) {
325  printk(KERN_WARNING
326  "Niccy: No IO-Adr for PCI card found\n");
327  return 0;
328  }
329  cs->subtyp = NICCY_PCI;
330  } else {
331  printk(KERN_WARNING "Niccy: No PCI card found\n");
332  return 0;
333  }
334  cs->irq_flags |= IRQF_SHARED;
335  cs->hw.niccy.isac = pci_ioaddr + ISAC_PCI_DATA;
336  cs->hw.niccy.isac_ale = pci_ioaddr + ISAC_PCI_ADDR;
337  cs->hw.niccy.hscx = pci_ioaddr + HSCX_PCI_DATA;
338  cs->hw.niccy.hscx_ale = pci_ioaddr + HSCX_PCI_ADDR;
339  if (!request_region(cs->hw.niccy.isac, 4, "niccy")) {
340  printk(KERN_WARNING
341  "HiSax: NICCY data port %x-%x already in use\n",
342  cs->hw.niccy.isac, cs->hw.niccy.isac + 4);
343  return 0;
344  }
345  if (!request_region(cs->hw.niccy.cfg_reg, 0x40, "niccy pci")) {
346  printk(KERN_WARNING
347  "HiSax: NICCY pci port %x-%x already in use\n",
348  cs->hw.niccy.cfg_reg,
349  cs->hw.niccy.cfg_reg + 0x40);
350  release_region(cs->hw.niccy.isac, 4);
351  return 0;
352  }
353 #else
354  printk(KERN_WARNING "Niccy: io0 0 and NO_PCI_BIOS\n");
355  printk(KERN_WARNING "Niccy: unable to config NICCY PCI\n");
356  return 0;
357 #endif /* CONFIG_PCI */
358  }
359  printk(KERN_INFO "HiSax: NICCY %s config irq:%d data:0x%X ale:0x%X\n",
360  (cs->subtyp == 1) ? "PnP" : "PCI",
361  cs->irq, cs->hw.niccy.isac, cs->hw.niccy.isac_ale);
362  setup_isac(cs);
363  cs->readisac = &ReadISAC;
364  cs->writeisac = &WriteISAC;
365  cs->readisacfifo = &ReadISACfifo;
366  cs->writeisacfifo = &WriteISACfifo;
367  cs->BC_Read_Reg = &ReadHSCX;
368  cs->BC_Write_Reg = &WriteHSCX;
369  cs->BC_Send_Data = &hscx_fill_fifo;
370  cs->cardmsg = &niccy_card_msg;
371  cs->irq_func = &niccy_interrupt;
372  ISACVersion(cs, "Niccy:");
373  if (HscxVersion(cs, "Niccy:")) {
374  printk(KERN_WARNING "Niccy: wrong HSCX versions check IO "
375  "address\n");
376  release_io_niccy(cs);
377  return 0;
378  }
379  return 1;
380 }
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