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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* $Id: sportster.c,v 1.16.2.4 2004/01/13 23:48:39 keil Exp $
2 *
3 * low level stuff for USR Sportster internal TA
4 *
5 * Author Karsten Keil
6 * Copyright by Karsten Keil <keil@isdn4linux.de>
Joe Perches475be4d2012-02-19 19:52:38 -08007 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 * 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
Adrian Bunk672c3fd2005-06-25 14:59:18 -070021static const char *sportster_revision = "$Revision: 1.16.2.4 $";
Linus Torvalds1da177e2005-04-16 15:20:36 -070022
Joe Perches475be4d2012-02-19 19:52:38 -080023#define byteout(addr, val) outb(val, addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#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{
Joe Perches475be4d2012-02-19 19:52:38 -080036 return (base + ((off & 0xfc) << 8) + ((off & 3) << 1));
Linus Torvalds1da177e2005-04-16 15:20:36 -070037}
38
39static inline void
Joe Perches475be4d2012-02-19 19:52:38 -080040read_fifo(unsigned int adr, u_char *data, int size)
Linus Torvalds1da177e2005-04-16 15:20:36 -070041{
42 insb(adr, data, size);
43}
44
45static void
Joe Perches475be4d2012-02-19 19:52:38 -080046write_fifo(unsigned int adr, u_char *data, int size)
Linus Torvalds1da177e2005-04-16 15:20:36 -070047{
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
Joe Perches475be4d2012-02-19 19:52:38 -080066ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
Linus Torvalds1da177e2005-04-16 15:20:36 -070067{
68 read_fifo(cs->hw.spt.isac, data, size);
69}
70
71static void
Joe Perches475be4d2012-02-19 19:52:38 -080072WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
Linus Torvalds1da177e2005-04-16 15:20:36 -070073{
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
David Howells7d12e782006-10-05 14:55:46 +0100101sportster_interrupt(int intno, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102{
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);
Joe Perches475be4d2012-02-19 19:52:38 -0800109Start_HSCX:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110 if (val)
111 hscx_int_main(cs, val);
112 val = ReadISAC(cs, ISAC_ISTA);
Joe Perches475be4d2012-02-19 19:52:38 -0800113Start_ISAC:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114 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 */
Joe Perches475be4d2012-02-19 19:52:38 -0800129 bytein(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ + 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 spin_unlock_irqrestore(&cs->lock, flags);
131 return IRQ_HANDLED;
132}
133
Adrian Bunk672c3fd2005-06-25 14:59:18 -0700134static void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135release_io_sportster(struct IsdnCardState *cs)
136{
137 int i, adr;
138
139 byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, 0);
Joe Perches475be4d2012-02-19 19:52:38 -0800140 for (i = 0; i < 64; i++) {
141 adr = cs->hw.spt.cfg_reg + i * 1024;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142 release_region(adr, 8);
143 }
144}
145
Adrian Bunk672c3fd2005-06-25 14:59:18 -0700146static void
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147reset_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) {
Joe Perches475be4d2012-02-19 19:52:38 -0800163 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 }
Joe Perches475be4d2012-02-19 19:52:38 -0800183 return (0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184}
185
Greg Kroah-Hartmaned5a84c2012-12-21 13:13:05 -0800186static int get_io_range(struct IsdnCardState *cs)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187{
188 int i, j, adr;
Joe Perches475be4d2012-02-19 19:52:38 -0800189
190 for (i = 0; i < 64; i++) {
191 adr = cs->hw.spt.cfg_reg + i * 1024;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 if (!request_region(adr, 8, "sportster")) {
Jeff Garzik83493042007-10-31 03:42:07 -0400193 printk(KERN_WARNING "HiSax: USR Sportster config port "
Joe Perches475be4d2012-02-19 19:52:38 -0800194 "%x-%x already in use\n",
195 adr, adr + 8);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 break;
Joe Perches475be4d2012-02-19 19:52:38 -0800197 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 }
Joe Perches475be4d2012-02-19 19:52:38 -0800199 if (i == 64)
200 return (1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201 else {
Joe Perches475be4d2012-02-19 19:52:38 -0800202 for (j = 0; j < i; j++) {
203 adr = cs->hw.spt.cfg_reg + j * 1024;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204 release_region(adr, 8);
205 }
Joe Perches475be4d2012-02-19 19:52:38 -0800206 return (0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 }
208}
209
Greg Kroah-Hartmaned5a84c2012-12-21 13:13:05 -0800210int setup_sportster(struct IsdnCard *card)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211{
212 struct IsdnCardState *cs = card->cs;
213 char tmp[64];
214
215 strcpy(tmp, sportster_revision);
216 printk(KERN_INFO "HiSax: USR Sportster driver Rev. %s\n", HiSax_getrev(tmp));
217 if (cs->typ != ISDN_CTYPE_SPORTSTER)
218 return (0);
219
220 cs->hw.spt.cfg_reg = card->para[1];
221 cs->irq = card->para[0];
222 if (!get_io_range(cs))
223 return (0);
224 cs->hw.spt.isac = cs->hw.spt.cfg_reg + SPORTSTER_ISAC;
225 cs->hw.spt.hscx[0] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXA;
226 cs->hw.spt.hscx[1] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXB;
Joe Perches475be4d2012-02-19 19:52:38 -0800227
228 switch (cs->irq) {
229 case 5: cs->hw.spt.res_irq = 1;
230 break;
231 case 7: cs->hw.spt.res_irq = 2;
232 break;
233 case 10:cs->hw.spt.res_irq = 3;
234 break;
235 case 11:cs->hw.spt.res_irq = 4;
236 break;
237 case 12:cs->hw.spt.res_irq = 5;
238 break;
239 case 14:cs->hw.spt.res_irq = 6;
240 break;
241 case 15:cs->hw.spt.res_irq = 7;
242 break;
243 default:release_io_sportster(cs);
244 printk(KERN_WARNING "Sportster: wrong IRQ\n");
245 return (0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246 }
Jeff Garzik83493042007-10-31 03:42:07 -0400247 printk(KERN_INFO "HiSax: USR Sportster config irq:%d cfg:0x%X\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800248 cs->irq, cs->hw.spt.cfg_reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 setup_isac(cs);
250 cs->readisac = &ReadISAC;
251 cs->writeisac = &WriteISAC;
252 cs->readisacfifo = &ReadISACfifo;
253 cs->writeisacfifo = &WriteISACfifo;
254 cs->BC_Read_Reg = &ReadHSCX;
255 cs->BC_Write_Reg = &WriteHSCX;
256 cs->BC_Send_Data = &hscx_fill_fifo;
257 cs->cardmsg = &Sportster_card_msg;
258 cs->irq_func = &sportster_interrupt;
259 ISACVersion(cs, "Sportster:");
260 if (HscxVersion(cs, "Sportster:")) {
261 printk(KERN_WARNING
262 "Sportster: wrong HSCX versions check IO address\n");
263 release_io_sportster(cs);
264 return (0);
265 }
266 return (1);
267}