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1da177e4 LT |
1 | /* $Id: isurf.c,v 1.12.2.4 2004/01/13 21:46:03 keil Exp $ |
2 | * | |
3 | * low level stuff for Siemens I-Surf/I-Talk cards | |
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 | */ | |
12 | ||
13 | #include <linux/init.h> | |
14 | #include "hisax.h" | |
15 | #include "isac.h" | |
16 | #include "isar.h" | |
17 | #include "isdnl1.h" | |
18 | #include <linux/isapnp.h> | |
19 | ||
20 | extern const char *CardType[]; | |
21 | ||
22 | static const char *ISurf_revision = "$Revision: 1.12.2.4 $"; | |
23 | ||
24 | #define byteout(addr,val) outb(val,addr) | |
25 | #define bytein(addr) inb(addr) | |
26 | ||
27 | #define ISURF_ISAR_RESET 1 | |
28 | #define ISURF_ISAC_RESET 2 | |
29 | #define ISURF_ISAR_EA 4 | |
30 | #define ISURF_ARCOFI_RESET 8 | |
31 | #define ISURF_RESET (ISURF_ISAR_RESET | ISURF_ISAC_RESET | ISURF_ARCOFI_RESET) | |
32 | ||
33 | #define ISURF_ISAR_OFFSET 0 | |
34 | #define ISURF_ISAC_OFFSET 0x100 | |
35 | #define ISURF_IOMEM_SIZE 0x400 | |
36 | /* Interface functions */ | |
37 | ||
38 | static u_char | |
39 | ReadISAC(struct IsdnCardState *cs, u_char offset) | |
40 | { | |
41 | return (readb(cs->hw.isurf.isac + offset)); | |
42 | } | |
43 | ||
44 | static void | |
45 | WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value) | |
46 | { | |
47 | writeb(value, cs->hw.isurf.isac + offset); mb(); | |
48 | } | |
49 | ||
50 | static void | |
51 | ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size) | |
52 | { | |
53 | register int i; | |
54 | for (i = 0; i < size; i++) | |
55 | data[i] = readb(cs->hw.isurf.isac); | |
56 | } | |
57 | ||
58 | static void | |
59 | WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size) | |
60 | { | |
61 | register int i; | |
62 | for (i = 0; i < size; i++){ | |
63 | writeb(data[i], cs->hw.isurf.isac);mb(); | |
64 | } | |
65 | } | |
66 | ||
67 | /* ISAR access routines | |
68 | * mode = 0 access with IRQ on | |
69 | * mode = 1 access with IRQ off | |
70 | * mode = 2 access with IRQ off and using last offset | |
71 | */ | |
72 | ||
73 | static u_char | |
74 | ReadISAR(struct IsdnCardState *cs, int mode, u_char offset) | |
75 | { | |
76 | return(readb(cs->hw.isurf.isar + offset)); | |
77 | } | |
78 | ||
79 | static void | |
80 | WriteISAR(struct IsdnCardState *cs, int mode, u_char offset, u_char value) | |
81 | { | |
82 | writeb(value, cs->hw.isurf.isar + offset);mb(); | |
83 | } | |
84 | ||
85 | static irqreturn_t | |
86 | isurf_interrupt(int intno, void *dev_id, struct pt_regs *regs) | |
87 | { | |
88 | struct IsdnCardState *cs = dev_id; | |
89 | u_char val; | |
90 | int cnt = 5; | |
91 | u_long flags; | |
92 | ||
93 | spin_lock_irqsave(&cs->lock, flags); | |
94 | val = readb(cs->hw.isurf.isar + ISAR_IRQBIT); | |
95 | Start_ISAR: | |
96 | if (val & ISAR_IRQSTA) | |
97 | isar_int_main(cs); | |
98 | val = readb(cs->hw.isurf.isac + ISAC_ISTA); | |
99 | Start_ISAC: | |
100 | if (val) | |
101 | isac_interrupt(cs, val); | |
102 | val = readb(cs->hw.isurf.isar + ISAR_IRQBIT); | |
103 | if ((val & ISAR_IRQSTA) && --cnt) { | |
104 | if (cs->debug & L1_DEB_HSCX) | |
105 | debugl1(cs, "ISAR IntStat after IntRoutine"); | |
106 | goto Start_ISAR; | |
107 | } | |
108 | val = readb(cs->hw.isurf.isac + ISAC_ISTA); | |
109 | if (val && --cnt) { | |
110 | if (cs->debug & L1_DEB_ISAC) | |
111 | debugl1(cs, "ISAC IntStat after IntRoutine"); | |
112 | goto Start_ISAC; | |
113 | } | |
114 | if (!cnt) | |
115 | printk(KERN_WARNING "ISurf IRQ LOOP\n"); | |
116 | ||
117 | writeb(0, cs->hw.isurf.isar + ISAR_IRQBIT); mb(); | |
118 | writeb(0xFF, cs->hw.isurf.isac + ISAC_MASK);mb(); | |
119 | writeb(0, cs->hw.isurf.isac + ISAC_MASK);mb(); | |
120 | writeb(ISAR_IRQMSK, cs->hw.isurf.isar + ISAR_IRQBIT); mb(); | |
121 | spin_unlock_irqrestore(&cs->lock, flags); | |
122 | return IRQ_HANDLED; | |
123 | } | |
124 | ||
672c3fd9 | 125 | static void |
1da177e4 LT |
126 | release_io_isurf(struct IsdnCardState *cs) |
127 | { | |
128 | release_region(cs->hw.isurf.reset, 1); | |
129 | iounmap(cs->hw.isurf.isar); | |
130 | release_mem_region(cs->hw.isurf.phymem, ISURF_IOMEM_SIZE); | |
131 | } | |
132 | ||
133 | static void | |
134 | reset_isurf(struct IsdnCardState *cs, u_char chips) | |
135 | { | |
136 | printk(KERN_INFO "ISurf: resetting card\n"); | |
137 | ||
138 | byteout(cs->hw.isurf.reset, chips); /* Reset On */ | |
139 | mdelay(10); | |
140 | byteout(cs->hw.isurf.reset, ISURF_ISAR_EA); /* Reset Off */ | |
141 | mdelay(10); | |
142 | } | |
143 | ||
144 | static int | |
145 | ISurf_card_msg(struct IsdnCardState *cs, int mt, void *arg) | |
146 | { | |
147 | u_long flags; | |
148 | ||
149 | switch (mt) { | |
150 | case CARD_RESET: | |
151 | spin_lock_irqsave(&cs->lock, flags); | |
152 | reset_isurf(cs, ISURF_RESET); | |
153 | spin_unlock_irqrestore(&cs->lock, flags); | |
154 | return(0); | |
155 | case CARD_RELEASE: | |
156 | release_io_isurf(cs); | |
157 | return(0); | |
158 | case CARD_INIT: | |
159 | spin_lock_irqsave(&cs->lock, flags); | |
160 | reset_isurf(cs, ISURF_RESET); | |
161 | clear_pending_isac_ints(cs); | |
162 | writeb(0, cs->hw.isurf.isar+ISAR_IRQBIT);mb(); | |
163 | initisac(cs); | |
164 | initisar(cs); | |
165 | /* Reenable ISAC IRQ */ | |
166 | cs->writeisac(cs, ISAC_MASK, 0); | |
167 | /* RESET Receiver and Transmitter */ | |
168 | cs->writeisac(cs, ISAC_CMDR, 0x41); | |
169 | spin_unlock_irqrestore(&cs->lock, flags); | |
170 | return(0); | |
171 | case CARD_TEST: | |
172 | return(0); | |
173 | } | |
174 | return(0); | |
175 | } | |
176 | ||
177 | static int | |
178 | isurf_auxcmd(struct IsdnCardState *cs, isdn_ctrl *ic) { | |
179 | int ret; | |
180 | u_long flags; | |
181 | ||
182 | if ((ic->command == ISDN_CMD_IOCTL) && (ic->arg == 9)) { | |
183 | ret = isar_auxcmd(cs, ic); | |
184 | spin_lock_irqsave(&cs->lock, flags); | |
185 | if (!ret) { | |
186 | reset_isurf(cs, ISURF_ISAR_EA | ISURF_ISAC_RESET | | |
187 | ISURF_ARCOFI_RESET); | |
188 | initisac(cs); | |
189 | cs->writeisac(cs, ISAC_MASK, 0); | |
190 | cs->writeisac(cs, ISAC_CMDR, 0x41); | |
191 | } | |
192 | spin_unlock_irqrestore(&cs->lock, flags); | |
193 | return(ret); | |
194 | } | |
195 | return(isar_auxcmd(cs, ic)); | |
196 | } | |
197 | ||
198 | #ifdef __ISAPNP__ | |
199 | static struct pnp_card *pnp_c __initdata = NULL; | |
200 | #endif | |
201 | ||
202 | int __init | |
203 | setup_isurf(struct IsdnCard *card) | |
204 | { | |
205 | int ver; | |
206 | struct IsdnCardState *cs = card->cs; | |
207 | char tmp[64]; | |
208 | ||
209 | strcpy(tmp, ISurf_revision); | |
210 | printk(KERN_INFO "HiSax: ISurf driver Rev. %s\n", HiSax_getrev(tmp)); | |
211 | ||
212 | if (cs->typ != ISDN_CTYPE_ISURF) | |
213 | return(0); | |
214 | if (card->para[1] && card->para[2]) { | |
215 | cs->hw.isurf.reset = card->para[1]; | |
216 | cs->hw.isurf.phymem = card->para[2]; | |
217 | cs->irq = card->para[0]; | |
218 | } else { | |
219 | #ifdef __ISAPNP__ | |
220 | if (isapnp_present()) { | |
221 | struct pnp_dev *pnp_d = NULL; | |
222 | int err; | |
223 | ||
224 | cs->subtyp = 0; | |
225 | if ((pnp_c = pnp_find_card( | |
226 | ISAPNP_VENDOR('S', 'I', 'E'), | |
227 | ISAPNP_FUNCTION(0x0010), pnp_c))) { | |
228 | if (!(pnp_d = pnp_find_dev(pnp_c, | |
229 | ISAPNP_VENDOR('S', 'I', 'E'), | |
230 | ISAPNP_FUNCTION(0x0010), pnp_d))) { | |
231 | printk(KERN_ERR "ISurfPnP: PnP error card found, no device\n"); | |
232 | return (0); | |
233 | } | |
234 | pnp_disable_dev(pnp_d); | |
235 | err = pnp_activate_dev(pnp_d); | |
236 | cs->hw.isurf.reset = pnp_port_start(pnp_d, 0); | |
237 | cs->hw.isurf.phymem = pnp_mem_start(pnp_d, 1); | |
238 | cs->irq = pnp_irq(pnp_d, 0); | |
239 | if (!cs->irq || !cs->hw.isurf.reset || !cs->hw.isurf.phymem) { | |
240 | printk(KERN_ERR "ISurfPnP:some resources are missing %d/%x/%lx\n", | |
241 | cs->irq, cs->hw.isurf.reset, cs->hw.isurf.phymem); | |
242 | pnp_disable_dev(pnp_d); | |
243 | return(0); | |
244 | } | |
245 | } else { | |
246 | printk(KERN_INFO "ISurfPnP: no ISAPnP card found\n"); | |
247 | return(0); | |
248 | } | |
249 | } else { | |
250 | printk(KERN_INFO "ISurfPnP: no ISAPnP bus found\n"); | |
251 | return(0); | |
252 | } | |
253 | #else | |
254 | printk(KERN_WARNING "HiSax: %s port/mem not set\n", | |
255 | CardType[card->typ]); | |
256 | return (0); | |
257 | #endif | |
258 | } | |
259 | if (!request_region(cs->hw.isurf.reset, 1, "isurf isdn")) { | |
260 | printk(KERN_WARNING | |
261 | "HiSax: %s config port %x already in use\n", | |
262 | CardType[card->typ], | |
263 | cs->hw.isurf.reset); | |
264 | return (0); | |
265 | } | |
266 | if (!request_region(cs->hw.isurf.phymem, ISURF_IOMEM_SIZE, "isurf iomem")) { | |
267 | printk(KERN_WARNING | |
268 | "HiSax: %s memory region %lx-%lx already in use\n", | |
269 | CardType[card->typ], | |
270 | cs->hw.isurf.phymem, | |
271 | cs->hw.isurf.phymem + ISURF_IOMEM_SIZE); | |
272 | release_region(cs->hw.isurf.reset, 1); | |
273 | return (0); | |
274 | } | |
275 | cs->hw.isurf.isar = ioremap(cs->hw.isurf.phymem, ISURF_IOMEM_SIZE); | |
276 | cs->hw.isurf.isac = cs->hw.isurf.isar + ISURF_ISAC_OFFSET; | |
277 | printk(KERN_INFO | |
278 | "ISurf: defined at 0x%x 0x%lx IRQ %d\n", | |
279 | cs->hw.isurf.reset, | |
280 | cs->hw.isurf.phymem, | |
281 | cs->irq); | |
282 | ||
283 | setup_isac(cs); | |
284 | cs->cardmsg = &ISurf_card_msg; | |
285 | cs->irq_func = &isurf_interrupt; | |
286 | cs->auxcmd = &isurf_auxcmd; | |
287 | cs->readisac = &ReadISAC; | |
288 | cs->writeisac = &WriteISAC; | |
289 | cs->readisacfifo = &ReadISACfifo; | |
290 | cs->writeisacfifo = &WriteISACfifo; | |
291 | cs->bcs[0].hw.isar.reg = &cs->hw.isurf.isar_r; | |
292 | cs->bcs[1].hw.isar.reg = &cs->hw.isurf.isar_r; | |
293 | test_and_set_bit(HW_ISAR, &cs->HW_Flags); | |
294 | ISACVersion(cs, "ISurf:"); | |
295 | cs->BC_Read_Reg = &ReadISAR; | |
296 | cs->BC_Write_Reg = &WriteISAR; | |
297 | cs->BC_Send_Data = &isar_fill_fifo; | |
298 | ver = ISARVersion(cs, "ISurf:"); | |
299 | if (ver < 0) { | |
300 | printk(KERN_WARNING | |
301 | "ISurf: wrong ISAR version (ret = %d)\n", ver); | |
302 | release_io_isurf(cs); | |
303 | return (0); | |
304 | } | |
305 | return (1); | |
306 | } |