1/* $Id: teles0.c,v 1.1.1.1 2007/08/03 18:52:36 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
24extern const char *CardType[];
25
26static const char *teles0_revision = "$Revision: 1.1.1.1 $";
27
28#define TELES_IOMEM_SIZE	0x400
29#define byteout(addr,val) outb(val,addr)
30#define bytein(addr) inb(addr)
31
32static inline u_char
33readisac(void __iomem *adr, u_char off)
34{
35	return readb(adr + ((off & 1) ? 0x2ff : 0x100) + off);
36}
37
38static inline void
39writeisac(void __iomem *adr, u_char off, u_char data)
40{
41	writeb(data, adr + ((off & 1) ? 0x2ff : 0x100) + off); mb();
42}
43
44
45static inline u_char
46readhscx(void __iomem *adr, int hscx, u_char off)
47{
48	return readb(adr + (hscx ? 0x1c0 : 0x180) +
49		     ((off & 1) ? 0x1ff : 0) + off);
50}
51
52static inline void
53writehscx(void __iomem *adr, int hscx, u_char off, u_char data)
54{
55	writeb(data, adr + (hscx ? 0x1c0 : 0x180) +
56	       ((off & 1) ? 0x1ff : 0) + off); mb();
57}
58
59static inline void
60read_fifo_isac(void __iomem *adr, u_char * data, int size)
61{
62	register int i;
63	register u_char __iomem *ad = adr + 0x100;
64	for (i = 0; i < size; i++)
65		data[i] = readb(ad);
66}
67
68static inline void
69write_fifo_isac(void __iomem *adr, u_char * data, int size)
70{
71	register int i;
72	register u_char __iomem *ad = adr + 0x100;
73	for (i = 0; i < size; i++) {
74		writeb(data[i], ad); mb();
75	}
76}
77
78static inline void
79read_fifo_hscx(void __iomem *adr, int hscx, u_char * data, int size)
80{
81	register int i;
82	register u_char __iomem *ad = adr + (hscx ? 0x1c0 : 0x180);
83	for (i = 0; i < size; i++)
84		data[i] = readb(ad);
85}
86
87static inline void
88write_fifo_hscx(void __iomem *adr, int hscx, u_char * data, int size)
89{
90	int i;
91	register u_char __iomem *ad = adr + (hscx ? 0x1c0 : 0x180);
92	for (i = 0; i < size; i++) {
93		writeb(data[i], ad); mb();
94	}
95}
96
97/* Interface functions */
98
99static u_char
100ReadISAC(struct IsdnCardState *cs, u_char offset)
101{
102	return (readisac(cs->hw.teles0.membase, offset));
103}
104
105static void
106WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
107{
108	writeisac(cs->hw.teles0.membase, offset, value);
109}
110
111static void
112ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
113{
114	read_fifo_isac(cs->hw.teles0.membase, data, size);
115}
116
117static void
118WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
119{
120	write_fifo_isac(cs->hw.teles0.membase, data, size);
121}
122
123static u_char
124ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
125{
126	return (readhscx(cs->hw.teles0.membase, hscx, offset));
127}
128
129static void
130WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
131{
132	writehscx(cs->hw.teles0.membase, hscx, offset, value);
133}
134
135/*
136 * fast interrupt HSCX stuff goes here
137 */
138
139#define READHSCX(cs, nr, reg) readhscx(cs->hw.teles0.membase, nr, reg)
140#define WRITEHSCX(cs, nr, reg, data) writehscx(cs->hw.teles0.membase, nr, reg, data)
141#define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)
142#define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo_hscx(cs->hw.teles0.membase, nr, ptr, cnt)
143
144#include "hscx_irq.c"
145
146static irqreturn_t
147teles0_interrupt(int intno, void *dev_id)
148{
149	struct IsdnCardState *cs = dev_id;
150	u_char val;
151	u_long flags;
152	int count = 0;
153
154	spin_lock_irqsave(&cs->lock, flags);
155	val = readhscx(cs->hw.teles0.membase, 1, HSCX_ISTA);
156      Start_HSCX:
157	if (val)
158		hscx_int_main(cs, val);
159	val = readisac(cs->hw.teles0.membase, ISAC_ISTA);
160      Start_ISAC:
161	if (val)
162		isac_interrupt(cs, val);
163	count++;
164	val = readhscx(cs->hw.teles0.membase, 1, HSCX_ISTA);
165	if (val && count < 5) {
166		if (cs->debug & L1_DEB_HSCX)
167			debugl1(cs, "HSCX IntStat after IntRoutine");
168		goto Start_HSCX;
169	}
170	val = readisac(cs->hw.teles0.membase, ISAC_ISTA);
171	if (val && count < 5) {
172		if (cs->debug & L1_DEB_ISAC)
173			debugl1(cs, "ISAC IntStat after IntRoutine");
174		goto Start_ISAC;
175	}
176	writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0xFF);
177	writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0xFF);
178	writeisac(cs->hw.teles0.membase, ISAC_MASK, 0xFF);
179	writeisac(cs->hw.teles0.membase, ISAC_MASK, 0x0);
180	writehscx(cs->hw.teles0.membase, 0, HSCX_MASK, 0x0);
181	writehscx(cs->hw.teles0.membase, 1, HSCX_MASK, 0x0);
182	spin_unlock_irqrestore(&cs->lock, flags);
183	return IRQ_HANDLED;
184}
185
186static void
187release_io_teles0(struct IsdnCardState *cs)
188{
189	if (cs->hw.teles0.cfg_reg)
190		release_region(cs->hw.teles0.cfg_reg, 8);
191	iounmap(cs->hw.teles0.membase);
192	release_mem_region(cs->hw.teles0.phymem, TELES_IOMEM_SIZE);
193}
194
195static int
196reset_teles0(struct IsdnCardState *cs)
197{
198	u_char cfval;
199
200	if (cs->hw.teles0.cfg_reg) {
201		switch (cs->irq) {
202			case 2:
203			case 9:
204				cfval = 0x00;
205				break;
206			case 3:
207				cfval = 0x02;
208				break;
209			case 4:
210				cfval = 0x04;
211				break;
212			case 5:
213				cfval = 0x06;
214				break;
215			case 10:
216				cfval = 0x08;
217				break;
218			case 11:
219				cfval = 0x0A;
220				break;
221			case 12:
222				cfval = 0x0C;
223				break;
224			case 15:
225				cfval = 0x0E;
226				break;
227			default:
228				return(1);
229		}
230		cfval |= ((cs->hw.teles0.phymem >> 9) & 0xF0);
231		byteout(cs->hw.teles0.cfg_reg + 4, cfval);
232		HZDELAY(HZ / 10 + 1);
233		byteout(cs->hw.teles0.cfg_reg + 4, cfval | 1);
234		HZDELAY(HZ / 10 + 1);
235	}
236	writeb(0, cs->hw.teles0.membase + 0x80); mb();
237	HZDELAY(HZ / 5 + 1);
238	writeb(1, cs->hw.teles0.membase + 0x80); mb();
239	HZDELAY(HZ / 5 + 1);
240	return(0);
241}
242
243static int
244Teles_card_msg(struct IsdnCardState *cs, int mt, void *arg)
245{
246	u_long flags;
247
248	switch (mt) {
249		case CARD_RESET:
250			spin_lock_irqsave(&cs->lock, flags);
251			reset_teles0(cs);
252			spin_unlock_irqrestore(&cs->lock, flags);
253			return(0);
254		case CARD_RELEASE:
255			release_io_teles0(cs);
256			return(0);
257		case CARD_INIT:
258			spin_lock_irqsave(&cs->lock, flags);
259			inithscxisac(cs, 3);
260			spin_unlock_irqrestore(&cs->lock, flags);
261			return(0);
262		case CARD_TEST:
263			return(0);
264	}
265	return(0);
266}
267
268int __devinit
269setup_teles0(struct IsdnCard *card)
270{
271	u_char val;
272	struct IsdnCardState *cs = card->cs;
273	char tmp[64];
274
275	strcpy(tmp, teles0_revision);
276	printk(KERN_INFO "HiSax: Teles 8.0/16.0 driver Rev. %s\n", HiSax_getrev(tmp));
277	if ((cs->typ != ISDN_CTYPE_16_0) && (cs->typ != ISDN_CTYPE_8_0))
278		return (0);
279
280	if (cs->typ == ISDN_CTYPE_16_0)
281		cs->hw.teles0.cfg_reg = card->para[2];
282	else			/* 8.0 */
283		cs->hw.teles0.cfg_reg = 0;
284
285	if (card->para[1] < 0x10000) {
286		card->para[1] <<= 4;
287		printk(KERN_INFO
288		   "Teles0: membase configured DOSish, assuming 0x%lx\n",
289		       (unsigned long) card->para[1]);
290	}
291	cs->irq = card->para[0];
292	if (cs->hw.teles0.cfg_reg) {
293		if (!request_region(cs->hw.teles0.cfg_reg, 8, "teles cfg")) {
294			printk(KERN_WARNING
295			  "HiSax: %s config port %x-%x already in use\n",
296			       CardType[card->typ],
297			       cs->hw.teles0.cfg_reg,
298			       cs->hw.teles0.cfg_reg + 8);
299			return (0);
300		}
301	}
302	if (cs->hw.teles0.cfg_reg) {
303		if ((val = bytein(cs->hw.teles0.cfg_reg + 0)) != 0x51) {
304			printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
305			       cs->hw.teles0.cfg_reg + 0, val);
306			release_region(cs->hw.teles0.cfg_reg, 8);
307			return (0);
308		}
309		if ((val = bytein(cs->hw.teles0.cfg_reg + 1)) != 0x93) {
310			printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
311			       cs->hw.teles0.cfg_reg + 1, val);
312			release_region(cs->hw.teles0.cfg_reg, 8);
313			return (0);
314		}
315		val = bytein(cs->hw.teles0.cfg_reg + 2);	/* 0x1e=without AB
316								   * 0x1f=with AB
317								   * 0x1c 16.3 ???
318								 */
319		if (val != 0x1e && val != 0x1f) {
320			printk(KERN_WARNING "Teles0: 16.0 Byte at %x is %x\n",
321			       cs->hw.teles0.cfg_reg + 2, val);
322			release_region(cs->hw.teles0.cfg_reg, 8);
323			return (0);
324		}
325	}
326	/* 16.0 and 8.0 designed for IOM1 */
327	test_and_set_bit(HW_IOM1, &cs->HW_Flags);
328	cs->hw.teles0.phymem = card->para[1];
329	if (!request_mem_region(cs->hw.teles0.phymem, TELES_IOMEM_SIZE, "teles iomem")) {
330		printk(KERN_WARNING
331			"HiSax: %s memory region %lx-%lx already in use\n",
332			CardType[card->typ],
333			cs->hw.teles0.phymem,
334			cs->hw.teles0.phymem + TELES_IOMEM_SIZE);
335		if (cs->hw.teles0.cfg_reg)
336			release_region(cs->hw.teles0.cfg_reg, 8);
337		return (0);
338	}
339	cs->hw.teles0.membase = ioremap(cs->hw.teles0.phymem, TELES_IOMEM_SIZE);
340	printk(KERN_INFO
341	       "HiSax: %s config irq:%d mem:%p cfg:0x%X\n",
342	       CardType[cs->typ], cs->irq,
343	       cs->hw.teles0.membase, cs->hw.teles0.cfg_reg);
344	if (reset_teles0(cs)) {
345		printk(KERN_WARNING "Teles0: wrong IRQ\n");
346		release_io_teles0(cs);
347		return (0);
348	}
349	setup_isac(cs);
350	cs->readisac = &ReadISAC;
351	cs->writeisac = &WriteISAC;
352	cs->readisacfifo = &ReadISACfifo;
353	cs->writeisacfifo = &WriteISACfifo;
354	cs->BC_Read_Reg = &ReadHSCX;
355	cs->BC_Write_Reg = &WriteHSCX;
356	cs->BC_Send_Data = &hscx_fill_fifo;
357	cs->cardmsg = &Teles_card_msg;
358	cs->irq_func = &teles0_interrupt;
359	ISACVersion(cs, "Teles0:");
360	if (HscxVersion(cs, "Teles0:")) {
361		printk(KERN_WARNING
362		 "Teles0: wrong HSCX versions check IO/MEM addresses\n");
363		release_io_teles0(cs);
364		return (0);
365	}
366	return (1);
367}
368