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  • only in /asuswrt-rt-n18u-9.0.0.4.380.2695/release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/isdn/hisax/
1/* $Id: sportster.c,v 1.16.2.4 2004/01/13 23:48:39 Exp $
2 *
3 * low level stuff for USR Sportster internal TA
4 *
5 * Author       Karsten Keil
6 * Copyright    by Karsten Keil      <keil@isdn4linux.de>
7 *
8 * This software may be used and distributed according to the terms
9 * of the GNU General Public License, incorporated herein by reference.
10 *
11 * Thanks to Christian "naddy" Weisgerber (3Com, US Robotics) for documentation
12 *
13 *
14 */
15#include <linux/init.h>
16#include "hisax.h"
17#include "isac.h"
18#include "hscx.h"
19#include "isdnl1.h"
20
21static const char *sportster_revision = "$Revision: 1.16.2.4 $";
22
23#define byteout(addr,val) outb(val,addr)
24#define bytein(addr) inb(addr)
25
26#define	 SPORTSTER_ISAC		0xC000
27#define	 SPORTSTER_HSCXA	0x0000
28#define	 SPORTSTER_HSCXB	0x4000
29#define	 SPORTSTER_RES_IRQ	0x8000
30#define	 SPORTSTER_RESET	0x80
31#define	 SPORTSTER_INTE		0x40
32
33static inline int
34calc_off(unsigned int base, unsigned int off)
35{
36	return(base + ((off & 0xfc)<<8) + ((off & 3)<<1));
37}
38
39static inline void
40read_fifo(unsigned int adr, u_char * data, int size)
41{
42	insb(adr, data, size);
43}
44
45static void
46write_fifo(unsigned int adr, u_char * data, int size)
47{
48	outsb(adr, data, size);
49}
50
51/* Interface functions */
52
53static u_char
54ReadISAC(struct IsdnCardState *cs, u_char offset)
55{
56	return (bytein(calc_off(cs->hw.spt.isac, offset)));
57}
58
59static void
60WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
61{
62	byteout(calc_off(cs->hw.spt.isac, offset), value);
63}
64
65static void
66ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
67{
68	read_fifo(cs->hw.spt.isac, data, size);
69}
70
71static void
72WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
73{
74	write_fifo(cs->hw.spt.isac, data, size);
75}
76
77static u_char
78ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
79{
80	return (bytein(calc_off(cs->hw.spt.hscx[hscx], offset)));
81}
82
83static void
84WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
85{
86	byteout(calc_off(cs->hw.spt.hscx[hscx], offset), value);
87}
88
89/*
90 * fast interrupt HSCX stuff goes here
91 */
92
93#define READHSCX(cs, nr, reg) bytein(calc_off(cs->hw.spt.hscx[nr], reg))
94#define WRITEHSCX(cs, nr, reg, data) byteout(calc_off(cs->hw.spt.hscx[nr], reg), data)
95#define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.spt.hscx[nr], ptr, cnt)
96#define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.spt.hscx[nr], ptr, cnt)
97
98#include "hscx_irq.c"
99
100static irqreturn_t
101sportster_interrupt(int intno, void *dev_id)
102{
103	struct IsdnCardState *cs = dev_id;
104	u_char val;
105	u_long flags;
106
107	spin_lock_irqsave(&cs->lock, flags);
108	val = READHSCX(cs, 1, HSCX_ISTA);
109      Start_HSCX:
110	if (val)
111		hscx_int_main(cs, val);
112	val = ReadISAC(cs, ISAC_ISTA);
113      Start_ISAC:
114	if (val)
115		isac_interrupt(cs, val);
116	val = READHSCX(cs, 1, HSCX_ISTA);
117	if (val) {
118		if (cs->debug & L1_DEB_HSCX)
119			debugl1(cs, "HSCX IntStat after IntRoutine");
120		goto Start_HSCX;
121	}
122	val = ReadISAC(cs, ISAC_ISTA);
123	if (val) {
124		if (cs->debug & L1_DEB_ISAC)
125			debugl1(cs, "ISAC IntStat after IntRoutine");
126		goto Start_ISAC;
127	}
128	/* get a new irq impulse if there any pending */
129	bytein(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ +1);
130	spin_unlock_irqrestore(&cs->lock, flags);
131	return IRQ_HANDLED;
132}
133
134static void
135release_io_sportster(struct IsdnCardState *cs)
136{
137	int i, adr;
138
139	byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, 0);
140	for (i=0; i<64; i++) {
141		adr = cs->hw.spt.cfg_reg + i *1024;
142		release_region(adr, 8);
143	}
144}
145
146static void
147reset_sportster(struct IsdnCardState *cs)
148{
149	cs->hw.spt.res_irq |= SPORTSTER_RESET; /* Reset On */
150	byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
151	mdelay(10);
152	cs->hw.spt.res_irq &= ~SPORTSTER_RESET; /* Reset Off */
153	byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
154	mdelay(10);
155}
156
157static int
158Sportster_card_msg(struct IsdnCardState *cs, int mt, void *arg)
159{
160	u_long flags;
161
162	switch (mt) {
163		case CARD_RESET:
164			spin_lock_irqsave(&cs->lock, flags);
165			reset_sportster(cs);
166			spin_unlock_irqrestore(&cs->lock, flags);
167			return(0);
168		case CARD_RELEASE:
169			release_io_sportster(cs);
170			return(0);
171		case CARD_INIT:
172			spin_lock_irqsave(&cs->lock, flags);
173			reset_sportster(cs);
174			inithscxisac(cs, 1);
175			cs->hw.spt.res_irq |= SPORTSTER_INTE; /* IRQ On */
176			byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
177			inithscxisac(cs, 2);
178			spin_unlock_irqrestore(&cs->lock, flags);
179			return(0);
180		case CARD_TEST:
181			return(0);
182	}
183	return(0);
184}
185
186static int __devinit
187get_io_range(struct IsdnCardState *cs)
188{
189	int i, j, adr;
190
191	for (i=0;i<64;i++) {
192		adr = cs->hw.spt.cfg_reg + i *1024;
193		if (!request_region(adr, 8, "sportster")) {
194			printk(KERN_WARNING "HiSax: USR Sportster config port "
195				"%x-%x already in use\n",
196				adr, adr + 8);
197			break;
198		}
199	}
200	if (i==64)
201		return(1);
202	else {
203		for (j=0; j<i; j++) {
204			adr = cs->hw.spt.cfg_reg + j *1024;
205			release_region(adr, 8);
206		}
207		return(0);
208	}
209}
210
211int __devinit
212setup_sportster(struct IsdnCard *card)
213{
214	struct IsdnCardState *cs = card->cs;
215	char tmp[64];
216
217	strcpy(tmp, sportster_revision);
218	printk(KERN_INFO "HiSax: USR Sportster driver Rev. %s\n", HiSax_getrev(tmp));
219	if (cs->typ != ISDN_CTYPE_SPORTSTER)
220		return (0);
221
222	cs->hw.spt.cfg_reg = card->para[1];
223	cs->irq = card->para[0];
224	if (!get_io_range(cs))
225		return (0);
226	cs->hw.spt.isac = cs->hw.spt.cfg_reg + SPORTSTER_ISAC;
227	cs->hw.spt.hscx[0] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXA;
228	cs->hw.spt.hscx[1] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXB;
229
230	switch(cs->irq) {
231		case 5:	cs->hw.spt.res_irq = 1;
232			break;
233		case 7:	cs->hw.spt.res_irq = 2;
234			break;
235		case 10:cs->hw.spt.res_irq = 3;
236			break;
237		case 11:cs->hw.spt.res_irq = 4;
238			break;
239		case 12:cs->hw.spt.res_irq = 5;
240			break;
241		case 14:cs->hw.spt.res_irq = 6;
242			break;
243		case 15:cs->hw.spt.res_irq = 7;
244			break;
245		default:release_io_sportster(cs);
246			printk(KERN_WARNING "Sportster: wrong IRQ\n");
247			return(0);
248	}
249	printk(KERN_INFO "HiSax: USR Sportster config irq:%d cfg:0x%X\n",
250		cs->irq, cs->hw.spt.cfg_reg);
251	setup_isac(cs);
252	cs->readisac = &ReadISAC;
253	cs->writeisac = &WriteISAC;
254	cs->readisacfifo = &ReadISACfifo;
255	cs->writeisacfifo = &WriteISACfifo;
256	cs->BC_Read_Reg = &ReadHSCX;
257	cs->BC_Write_Reg = &WriteHSCX;
258	cs->BC_Send_Data = &hscx_fill_fifo;
259	cs->cardmsg = &Sportster_card_msg;
260	cs->irq_func = &sportster_interrupt;
261	ISACVersion(cs, "Sportster:");
262	if (HscxVersion(cs, "Sportster:")) {
263		printk(KERN_WARNING
264		       "Sportster: wrong HSCX versions check IO address\n");
265		release_io_sportster(cs);
266		return (0);
267	}
268	return (1);
269}
270