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1da177e4 LT |
1 | /* $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> | |
475be4d8 | 7 | * |
1da177e4 LT |
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 | ||
672c3fd9 | 21 | static const char *sportster_revision = "$Revision: 1.16.2.4 $"; |
1da177e4 | 22 | |
475be4d8 | 23 | #define byteout(addr, val) outb(val, addr) |
1da177e4 LT |
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 | ||
33 | static inline int | |
34 | calc_off(unsigned int base, unsigned int off) | |
35 | { | |
475be4d8 | 36 | return (base + ((off & 0xfc) << 8) + ((off & 3) << 1)); |
1da177e4 LT |
37 | } |
38 | ||
39 | static inline void | |
475be4d8 | 40 | read_fifo(unsigned int adr, u_char *data, int size) |
1da177e4 LT |
41 | { |
42 | insb(adr, data, size); | |
43 | } | |
44 | ||
45 | static void | |
475be4d8 | 46 | write_fifo(unsigned int adr, u_char *data, int size) |
1da177e4 LT |
47 | { |
48 | outsb(adr, data, size); | |
49 | } | |
50 | ||
51 | /* Interface functions */ | |
52 | ||
53 | static u_char | |
54 | ReadISAC(struct IsdnCardState *cs, u_char offset) | |
55 | { | |
56 | return (bytein(calc_off(cs->hw.spt.isac, offset))); | |
57 | } | |
58 | ||
59 | static void | |
60 | WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value) | |
61 | { | |
62 | byteout(calc_off(cs->hw.spt.isac, offset), value); | |
63 | } | |
64 | ||
65 | static void | |
475be4d8 | 66 | ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size) |
1da177e4 LT |
67 | { |
68 | read_fifo(cs->hw.spt.isac, data, size); | |
69 | } | |
70 | ||
71 | static void | |
475be4d8 | 72 | WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size) |
1da177e4 LT |
73 | { |
74 | write_fifo(cs->hw.spt.isac, data, size); | |
75 | } | |
76 | ||
77 | static u_char | |
78 | ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset) | |
79 | { | |
80 | return (bytein(calc_off(cs->hw.spt.hscx[hscx], offset))); | |
81 | } | |
82 | ||
83 | static void | |
84 | WriteHSCX(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 | ||
100 | static irqreturn_t | |
7d12e780 | 101 | sportster_interrupt(int intno, void *dev_id) |
1da177e4 LT |
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); | |
475be4d8 | 109 | Start_HSCX: |
1da177e4 LT |
110 | if (val) |
111 | hscx_int_main(cs, val); | |
112 | val = ReadISAC(cs, ISAC_ISTA); | |
475be4d8 | 113 | Start_ISAC: |
1da177e4 LT |
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 */ | |
475be4d8 | 129 | bytein(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ + 1); |
1da177e4 LT |
130 | spin_unlock_irqrestore(&cs->lock, flags); |
131 | return IRQ_HANDLED; | |
132 | } | |
133 | ||
672c3fd9 | 134 | static void |
1da177e4 LT |
135 | release_io_sportster(struct IsdnCardState *cs) |
136 | { | |
137 | int i, adr; | |
138 | ||
139 | byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, 0); | |
475be4d8 JP |
140 | for (i = 0; i < 64; i++) { |
141 | adr = cs->hw.spt.cfg_reg + i * 1024; | |
1da177e4 LT |
142 | release_region(adr, 8); |
143 | } | |
144 | } | |
145 | ||
672c3fd9 | 146 | static void |
1da177e4 LT |
147 | reset_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 | ||
157 | static int | |
158 | Sportster_card_msg(struct IsdnCardState *cs, int mt, void *arg) | |
159 | { | |
160 | u_long flags; | |
161 | ||
162 | switch (mt) { | |
475be4d8 JP |
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); | |
1da177e4 | 182 | } |
475be4d8 | 183 | return (0); |
1da177e4 LT |
184 | } |
185 | ||
ed5a84cd | 186 | static int get_io_range(struct IsdnCardState *cs) |
1da177e4 LT |
187 | { |
188 | int i, j, adr; | |
475be4d8 JP |
189 | |
190 | for (i = 0; i < 64; i++) { | |
191 | adr = cs->hw.spt.cfg_reg + i * 1024; | |
1da177e4 | 192 | if (!request_region(adr, 8, "sportster")) { |
8349304d | 193 | printk(KERN_WARNING "HiSax: USR Sportster config port " |
475be4d8 JP |
194 | "%x-%x already in use\n", |
195 | adr, adr + 8); | |
1da177e4 | 196 | break; |
475be4d8 | 197 | } |
1da177e4 | 198 | } |
475be4d8 JP |
199 | if (i == 64) |
200 | return (1); | |
1da177e4 | 201 | else { |
475be4d8 JP |
202 | for (j = 0; j < i; j++) { |
203 | adr = cs->hw.spt.cfg_reg + j * 1024; | |
1da177e4 LT |
204 | release_region(adr, 8); |
205 | } | |
475be4d8 | 206 | return (0); |
1da177e4 LT |
207 | } |
208 | } | |
209 | ||
ed5a84cd | 210 | int setup_sportster(struct IsdnCard *card) |
1da177e4 LT |
211 | { |
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; | |
475be4d8 JP |
227 | |
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); | |
1da177e4 | 246 | } |
8349304d | 247 | printk(KERN_INFO "HiSax: USR Sportster config irq:%d cfg:0x%X\n", |
475be4d8 | 248 | cs->irq, cs->hw.spt.cfg_reg); |
1da177e4 LT |
249 | 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 | } |