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/drivers/isdn/hisax/teles0.c

https://bitbucket.org/ndreys/linux-sunxi
C | 365 lines | 308 code | 33 blank | 24 comment | 38 complexity | 24bb432ffabc3146f973c4063e43ca60 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  1/* $Id: teles0.c,v 2.15.2.4 2004/01/13 23:48:39 keil Exp $
  2 *
  3 * low level stuff for Teles Memory IO isdn cards
  4 *
  5 * Author       Karsten Keil
  6 *              based on the teles driver from Jan den Ouden
  7 * Copyright    by Karsten Keil      <keil@isdn4linux.de>
  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    Jan den Ouden
 13 *              Fritz Elfert
 14 *              Beat Doebeli
 15 *
 16 */
 17
 18#include <linux/init.h>
 19#include "hisax.h"
 20#include "isdnl1.h"
 21#include "isac.h"
 22#include "hscx.h"
 23
 24static const char *teles0_revision = "$Revision: 2.15.2.4 $";
 25
 26#define TELES_IOMEM_SIZE	0x400
 27#define byteout(addr,val) outb(val,addr)
 28#define bytein(addr) inb(addr)
 29
 30static inline u_char
 31readisac(void __iomem *adr, u_char off)
 32{
 33	return readb(adr + ((off & 1) ? 0x2ff : 0x100) + off);
 34}
 35
 36static inline void
 37writeisac(void __iomem *adr, u_char off, u_char data)
 38{
 39	writeb(data, adr + ((off & 1) ? 0x2ff : 0x100) + off); mb();
 40}
 41
 42
 43static inline u_char
 44readhscx(void __iomem *adr, int hscx, u_char off)
 45{
 46	return readb(adr + (hscx ? 0x1c0 : 0x180) +
 47		     ((off & 1) ? 0x1ff : 0) + off);
 48}
 49
 50static inline void
 51writehscx(void __iomem *adr, int hscx, u_char off, u_char data)
 52{
 53	writeb(data, adr + (hscx ? 0x1c0 : 0x180) +
 54	       ((off & 1) ? 0x1ff : 0) + off); mb();
 55}
 56
 57static inline void
 58read_fifo_isac(void __iomem *adr, u_char * data, int size)
 59{
 60	register int i;
 61	register u_char __iomem *ad = adr + 0x100;
 62	for (i = 0; i < size; i++)
 63		data[i] = readb(ad);
 64}
 65
 66static inline void
 67write_fifo_isac(void __iomem *adr, u_char * data, int size)
 68{
 69	register int i;
 70	register u_char __iomem *ad = adr + 0x100;
 71	for (i = 0; i < size; i++) {
 72		writeb(data[i], ad); mb();
 73	}
 74}
 75
 76static inline void
 77read_fifo_hscx(void __iomem *adr, int hscx, u_char * data, int size)
 78{
 79	register int i;
 80	register u_char __iomem *ad = adr + (hscx ? 0x1c0 : 0x180);
 81	for (i = 0; i < size; i++)
 82		data[i] = readb(ad);
 83}
 84
 85static inline void
 86write_fifo_hscx(void __iomem *adr, int hscx, u_char * data, int size)
 87{
 88	int i;
 89	register u_char __iomem *ad = adr + (hscx ? 0x1c0 : 0x180);
 90	for (i = 0; i < size; i++) {
 91		writeb(data[i], ad); mb();
 92	}
 93}
 94
 95/* Interface functions */
 96
 97static u_char
 98ReadISAC(struct IsdnCardState *cs, u_char offset)
 99{
100	return (readisac(cs->hw.teles0.membase, offset));
101}
102
103static void
104WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
105{
106	writeisac(cs->hw.teles0.membase, offset, value);
107}
108
109static void
110ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
111{
112	read_fifo_isac(cs->hw.teles0.membase, data, size);
113}
114
115static void
116WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
117{
118	write_fifo_isac(cs->hw.teles0.membase, data, size);
119}
120
121static u_char
122ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
123{
124	return (readhscx(cs->hw.teles0.membase, hscx, offset));
125}
126
127static void
128WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
129{
130	writehscx(cs->hw.teles0.membase, hscx, offset, value);
131}
132
133/*
134 * fast interrupt HSCX stuff goes here
135 */
136
137#define READHSCX(cs, nr, reg) readhscx(cs->hw.teles0.membase, nr, reg)
138#define WRITEHSCX(cs, nr, reg, data) writehscx(cs->hw.teles0.membase, nr, reg, data)
139#define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)
140#define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)
141
142#include "hscx_irq.c"
143
144static irqreturn_t
145teles0_interrupt(int intno, void *dev_id)
146{
147	struct IsdnCardState *cs = dev_id;
148	u_char val;
149	u_long flags;
150	int count = 0;
151
152	spin_lock_irqsave(&cs->lock, flags);
153	val = readhscx(cs->hw.teles0.membase, 1, HSCX_ISTA);
154      Start_HSCX:
155	if (val)
156		hscx_int_main(cs, val);
157	val = readisac(cs->hw.teles0.membase, ISAC_ISTA);
158      Start_ISAC:
159	if (val)
160		isac_interrupt(cs, val);
161	count++;
162	val = readhscx(cs->hw.teles0.membase, 1, HSCX_ISTA);
163	if (val && count < 5) {
164		if (cs->debug & L1_DEB_HSCX)
165			debugl1(cs, "HSCX IntStat after IntRoutine");
166		goto Start_HSCX;
167	}
168	val = readisac(cs->hw.teles0.membase, ISAC_ISTA);
169	if (val && count < 5) {
170		if (cs->debug & L1_DEB_ISAC)
171			debugl1(cs, "ISAC IntStat after IntRoutine");
172		goto Start_ISAC;
173	}
174	writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0xFF);
175	writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0xFF);
176	writeisac(cs->hw.teles0.membase, ISAC_MASK, 0xFF);
177	writeisac(cs->hw.teles0.membase, ISAC_MASK, 0x0);
178	writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0x0);
179	writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0x0);
180	spin_unlock_irqrestore(&cs->lock, flags);
181	return IRQ_HANDLED;
182}
183
184static void
185release_io_teles0(struct IsdnCardState *cs)
186{
187	if (cs->hw.teles0.cfg_reg)
188		release_region(cs->hw.teles0.cfg_reg, 8);
189	iounmap(cs->hw.teles0.membase);
190	release_mem_region(cs->hw.teles0.phymem, TELES_IOMEM_SIZE);
191}
192
193static int
194reset_teles0(struct IsdnCardState *cs)
195{
196	u_char cfval;
197
198	if (cs->hw.teles0.cfg_reg) {
199		switch (cs->irq) {
200			case 2:
201			case 9:
202				cfval = 0x00;
203				break;
204			case 3:
205				cfval = 0x02;
206				break;
207			case 4:
208				cfval = 0x04;
209				break;
210			case 5:
211				cfval = 0x06;
212				break;
213			case 10:
214				cfval = 0x08;
215				break;
216			case 11:
217				cfval = 0x0A;
218				break;
219			case 12:
220				cfval = 0x0C;
221				break;
222			case 15:
223				cfval = 0x0E;
224				break;
225			default:
226				return(1);
227		}
228		cfval |= ((cs->hw.teles0.phymem >> 9) & 0xF0);
229		byteout(cs->hw.teles0.cfg_reg + 4, cfval);
230		HZDELAY(HZ / 10 + 1);
231		byteout(cs->hw.teles0.cfg_reg + 4, cfval | 1);
232		HZDELAY(HZ / 10 + 1);
233	}
234	writeb(0, cs->hw.teles0.membase + 0x80); mb();
235	HZDELAY(HZ / 5 + 1);
236	writeb(1, cs->hw.teles0.membase + 0x80); mb();
237	HZDELAY(HZ / 5 + 1);
238	return(0);
239}
240
241static int
242Teles_card_msg(struct IsdnCardState *cs, int mt, void *arg)
243{
244	u_long flags;
245
246	switch (mt) {
247		case CARD_RESET:
248			spin_lock_irqsave(&cs->lock, flags);
249			reset_teles0(cs);
250			spin_unlock_irqrestore(&cs->lock, flags);
251			return(0);
252		case CARD_RELEASE:
253			release_io_teles0(cs);
254			return(0);
255		case CARD_INIT:
256			spin_lock_irqsave(&cs->lock, flags);
257			inithscxisac(cs, 3);
258			spin_unlock_irqrestore(&cs->lock, flags);
259			return(0);
260		case CARD_TEST:
261			return(0);
262	}
263	return(0);
264}
265
266int __devinit
267setup_teles0(struct IsdnCard *card)
268{
269	u_char val;
270	struct IsdnCardState *cs = card->cs;
271	char tmp[64];
272
273	strcpy(tmp, teles0_revision);
274	printk(KERN_INFO "HiSax: Teles 8.0/16.0 driver Rev. %s\n", HiSax_getrev(tmp));
275	if ((cs->typ != ISDN_CTYPE_16_0) && (cs->typ != ISDN_CTYPE_8_0))
276		return (0);
277
278	if (cs->typ == ISDN_CTYPE_16_0)
279		cs->hw.teles0.cfg_reg = card->para[2];
280	else			/* 8.0 */
281		cs->hw.teles0.cfg_reg = 0;
282
283	if (card->para[1] < 0x10000) {
284		card->para[1] <<= 4;
285		printk(KERN_INFO
286		   "Teles0: membase configured DOSish, assuming 0x%lx\n",
287		       (unsigned long) card->para[1]);
288	}
289	cs->irq = card->para[0];
290	if (cs->hw.teles0.cfg_reg) {
291		if (!request_region(cs->hw.teles0.cfg_reg, 8, "teles cfg")) {
292			printk(KERN_WARNING
293			  "HiSax: %s config port %x-%x already in use\n",
294			       CardType[card->typ],
295			       cs->hw.teles0.cfg_reg,
296			       cs->hw.teles0.cfg_reg + 8);
297			return (0);
298		}
299	}
300	if (cs->hw.teles0.cfg_reg) {
301		if ((val = bytein(cs->hw.teles0.cfg_reg + 0)) != 0x51) {
302			printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
303			       cs->hw.teles0.cfg_reg + 0, val);
304			release_region(cs->hw.teles0.cfg_reg, 8);
305			return (0);
306		}
307		if ((val = bytein(cs->hw.teles0.cfg_reg + 1)) != 0x93) {
308			printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
309			       cs->hw.teles0.cfg_reg + 1, val);
310			release_region(cs->hw.teles0.cfg_reg, 8);
311			return (0);
312		}
313		val = bytein(cs->hw.teles0.cfg_reg + 2);	/* 0x1e=without AB
314								   * 0x1f=with AB
315								   * 0x1c 16.3 ???
316								 */
317		if (val != 0x1e && val != 0x1f) {
318			printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
319			       cs->hw.teles0.cfg_reg + 2, val);
320			release_region(cs->hw.teles0.cfg_reg, 8);
321			return (0);
322		}
323	}
324	/* 16.0 and 8.0 designed for IOM1 */
325	test_and_set_bit(HW_IOM1, &cs->HW_Flags);
326	cs->hw.teles0.phymem = card->para[1];
327	if (!request_mem_region(cs->hw.teles0.phymem, TELES_IOMEM_SIZE, "teles iomem")) {
328		printk(KERN_WARNING
329			"HiSax: %s memory region %lx-%lx already in use\n",
330			CardType[card->typ],
331			cs->hw.teles0.phymem,
332			cs->hw.teles0.phymem + TELES_IOMEM_SIZE);
333		if (cs->hw.teles0.cfg_reg)
334			release_region(cs->hw.teles0.cfg_reg, 8);
335		return (0);
336	}
337	cs->hw.teles0.membase = ioremap(cs->hw.teles0.phymem, TELES_IOMEM_SIZE);
338	printk(KERN_INFO
339	       "HiSax: %s config irq:%d mem:%p cfg:0x%X\n",
340	       CardType[cs->typ], cs->irq,
341	       cs->hw.teles0.membase, cs->hw.teles0.cfg_reg);
342	if (reset_teles0(cs)) {
343		printk(KERN_WARNING "Teles0: wrong IRQ\n");
344		release_io_teles0(cs);
345		return (0);
346	}
347	setup_isac(cs);
348	cs->readisac = &ReadISAC;
349	cs->writeisac = &WriteISAC;
350	cs->readisacfifo = &ReadISACfifo;
351	cs->writeisacfifo = &WriteISACfifo;
352	cs->BC_Read_Reg = &ReadHSCX;
353	cs->BC_Write_Reg = &WriteHSCX;
354	cs->BC_Send_Data = &hscx_fill_fifo;
355	cs->cardmsg = &Teles_card_msg;
356	cs->irq_func = &teles0_interrupt;
357	ISACVersion(cs, "Teles0:");
358	if (HscxVersion(cs, "Teles0:")) {
359		printk(KERN_WARNING
360		 "Teles0: wrong HSCX versions check IO/MEM addresses\n");
361		release_io_teles0(cs);
362		return (0);
363	}
364	return (1);
365}