isdn: bootup crash fix
[linux-2.6] / drivers / isdn / hisax / hfcscard.c
1 /* $Id: hfcscard.c,v 1.10.2.4 2004/01/14 16:04:48 keil Exp $
2  *
3  * low level stuff for hfcs based cards (Teles3c, ACER P10)
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 <linux/isapnp.h>
15 #include "hisax.h"
16 #include "hfc_2bds0.h"
17 #include "isdnl1.h"
18
19 extern const char *CardType[];
20
21 static const char *hfcs_revision = "$Revision: 1.10.2.4 $";
22
23 static irqreturn_t
24 hfcs_interrupt(int intno, void *dev_id)
25 {
26         struct IsdnCardState *cs = dev_id;
27         u_char val, stat;
28         u_long flags;
29
30         spin_lock_irqsave(&cs->lock, flags);
31         if ((HFCD_ANYINT | HFCD_BUSY_NBUSY) & 
32                 (stat = cs->BC_Read_Reg(cs, HFCD_DATA, HFCD_STAT))) {
33                 val = cs->BC_Read_Reg(cs, HFCD_DATA, HFCD_INT_S1);
34                 if (cs->debug & L1_DEB_ISAC)
35                         debugl1(cs, "HFCS: stat(%02x) s1(%02x)", stat, val);
36                 hfc2bds0_interrupt(cs, val);
37         } else {
38                 if (cs->debug & L1_DEB_ISAC)
39                         debugl1(cs, "HFCS: irq_no_irq stat(%02x)", stat);
40         }
41         spin_unlock_irqrestore(&cs->lock, flags);
42         return IRQ_HANDLED;
43 }
44
45 static void
46 hfcs_Timer(struct IsdnCardState *cs)
47 {
48         cs->hw.hfcD.timer.expires = jiffies + 75;
49         /* WD RESET */
50 /*      WriteReg(cs, HFCD_DATA, HFCD_CTMT, cs->hw.hfcD.ctmt | 0x80);
51         add_timer(&cs->hw.hfcD.timer);
52 */
53 }
54
55 static void
56 release_io_hfcs(struct IsdnCardState *cs)
57 {
58         release2bds0(cs);
59         del_timer(&cs->hw.hfcD.timer);
60         if (cs->hw.hfcD.addr)
61                 release_region(cs->hw.hfcD.addr, 2);
62 }
63
64 static void
65 reset_hfcs(struct IsdnCardState *cs)
66 {
67         printk(KERN_INFO "HFCS: resetting card\n");
68         cs->hw.hfcD.cirm = HFCD_RESET;
69         if (cs->typ == ISDN_CTYPE_TELES3C)
70                 cs->hw.hfcD.cirm |= HFCD_MEM8K;
71         cs->BC_Write_Reg(cs, HFCD_DATA, HFCD_CIRM, cs->hw.hfcD.cirm);   /* Reset On */
72         mdelay(10);
73         cs->hw.hfcD.cirm = 0;
74         if (cs->typ == ISDN_CTYPE_TELES3C)
75                 cs->hw.hfcD.cirm |= HFCD_MEM8K;
76         cs->BC_Write_Reg(cs, HFCD_DATA, HFCD_CIRM, cs->hw.hfcD.cirm);   /* Reset Off */
77         mdelay(10);
78         if (cs->typ == ISDN_CTYPE_TELES3C)
79                 cs->hw.hfcD.cirm |= HFCD_INTB;
80         else if (cs->typ == ISDN_CTYPE_ACERP10)
81                 cs->hw.hfcD.cirm |= HFCD_INTA;
82         cs->BC_Write_Reg(cs, HFCD_DATA, HFCD_CIRM, cs->hw.hfcD.cirm);
83         cs->BC_Write_Reg(cs, HFCD_DATA, HFCD_CLKDEL, 0x0e);
84         cs->BC_Write_Reg(cs, HFCD_DATA, HFCD_TEST, HFCD_AUTO_AWAKE); /* S/T Auto awake */
85         cs->hw.hfcD.ctmt = HFCD_TIM25 | HFCD_AUTO_TIMER;
86         cs->BC_Write_Reg(cs, HFCD_DATA, HFCD_CTMT, cs->hw.hfcD.ctmt);
87         cs->hw.hfcD.int_m2 = HFCD_IRQ_ENABLE;
88         cs->hw.hfcD.int_m1 = HFCD_INTS_B1TRANS | HFCD_INTS_B2TRANS |
89                 HFCD_INTS_DTRANS | HFCD_INTS_B1REC | HFCD_INTS_B2REC |
90                 HFCD_INTS_DREC | HFCD_INTS_L1STATE;
91         cs->BC_Write_Reg(cs, HFCD_DATA, HFCD_INT_M1, cs->hw.hfcD.int_m1);
92         cs->BC_Write_Reg(cs, HFCD_DATA, HFCD_INT_M2, cs->hw.hfcD.int_m2);
93         cs->BC_Write_Reg(cs, HFCD_DATA, HFCD_STATES, HFCD_LOAD_STATE | 2); /* HFC ST 2 */
94         udelay(10);
95         cs->BC_Write_Reg(cs, HFCD_DATA, HFCD_STATES, 2); /* HFC ST 2 */
96         cs->hw.hfcD.mst_m = HFCD_MASTER;
97         cs->BC_Write_Reg(cs, HFCD_DATA, HFCD_MST_MODE, cs->hw.hfcD.mst_m); /* HFC Master */
98         cs->hw.hfcD.sctrl = 0;
99         cs->BC_Write_Reg(cs, HFCD_DATA, HFCD_SCTRL, cs->hw.hfcD.sctrl);
100 }
101
102 static int
103 hfcs_card_msg(struct IsdnCardState *cs, int mt, void *arg)
104 {
105         u_long flags;
106         int delay;
107
108         if (cs->debug & L1_DEB_ISAC)
109                 debugl1(cs, "HFCS: card_msg %x", mt);
110         switch (mt) {
111                 case CARD_RESET:
112                         spin_lock_irqsave(&cs->lock, flags);
113                         reset_hfcs(cs);
114                         spin_unlock_irqrestore(&cs->lock, flags);
115                         return(0);
116                 case CARD_RELEASE:
117                         release_io_hfcs(cs);
118                         return(0);
119                 case CARD_INIT:
120                         delay = (75*HZ)/100 +1;
121                         mod_timer(&cs->hw.hfcD.timer, jiffies + delay);
122                         spin_lock_irqsave(&cs->lock, flags);
123                         reset_hfcs(cs);
124                         init2bds0(cs);
125                         spin_unlock_irqrestore(&cs->lock, flags);
126                         delay = (80*HZ)/1000 +1;
127                         msleep(80);
128                         spin_lock_irqsave(&cs->lock, flags);
129                         cs->hw.hfcD.ctmt |= HFCD_TIM800;
130                         cs->BC_Write_Reg(cs, HFCD_DATA, HFCD_CTMT, cs->hw.hfcD.ctmt); 
131                         cs->BC_Write_Reg(cs, HFCD_DATA, HFCD_MST_MODE, cs->hw.hfcD.mst_m);
132                         spin_unlock_irqrestore(&cs->lock, flags);
133                         return(0);
134                 case CARD_TEST:
135                         return(0);
136         }
137         return(0);
138 }
139
140 #ifdef __ISAPNP__
141 static struct isapnp_device_id hfc_ids[] __devinitdata = {
142         { ISAPNP_VENDOR('A', 'N', 'X'), ISAPNP_FUNCTION(0x1114),
143           ISAPNP_VENDOR('A', 'N', 'X'), ISAPNP_FUNCTION(0x1114), 
144           (unsigned long) "Acer P10" },
145         { ISAPNP_VENDOR('B', 'I', 'L'), ISAPNP_FUNCTION(0x0002),
146           ISAPNP_VENDOR('B', 'I', 'L'), ISAPNP_FUNCTION(0x0002), 
147           (unsigned long) "Billion 2" },
148         { ISAPNP_VENDOR('B', 'I', 'L'), ISAPNP_FUNCTION(0x0001),
149           ISAPNP_VENDOR('B', 'I', 'L'), ISAPNP_FUNCTION(0x0001), 
150           (unsigned long) "Billion 1" },
151         { ISAPNP_VENDOR('T', 'A', 'G'), ISAPNP_FUNCTION(0x7410),
152           ISAPNP_VENDOR('T', 'A', 'G'), ISAPNP_FUNCTION(0x7410), 
153           (unsigned long) "IStar PnP" },
154         { ISAPNP_VENDOR('T', 'A', 'G'), ISAPNP_FUNCTION(0x2610),
155           ISAPNP_VENDOR('T', 'A', 'G'), ISAPNP_FUNCTION(0x2610), 
156           (unsigned long) "Teles 16.3c" },
157         { ISAPNP_VENDOR('S', 'F', 'M'), ISAPNP_FUNCTION(0x0001),
158           ISAPNP_VENDOR('S', 'F', 'M'), ISAPNP_FUNCTION(0x0001), 
159           (unsigned long) "Tornado Tipa C" },
160         { ISAPNP_VENDOR('K', 'Y', 'E'), ISAPNP_FUNCTION(0x0001),
161           ISAPNP_VENDOR('K', 'Y', 'E'), ISAPNP_FUNCTION(0x0001), 
162           (unsigned long) "Genius Speed Surfer" },
163         { 0, }
164 };
165
166 static struct isapnp_device_id *ipid __devinitdata = &hfc_ids[0];
167 static struct pnp_card *pnp_c __devinitdata = NULL;
168 #endif
169
170 int __devinit
171 setup_hfcs(struct IsdnCard *card)
172 {
173         struct IsdnCardState *cs = card->cs;
174         char tmp[64];
175
176         strcpy(tmp, hfcs_revision);
177         printk(KERN_INFO "HiSax: HFC-S driver Rev. %s\n", HiSax_getrev(tmp));
178
179 #ifdef __ISAPNP__
180         if (!card->para[1] && isapnp_present()) {
181                 struct pnp_dev *pnp_d;
182                 while(ipid->card_vendor) {
183                         if ((pnp_c = pnp_find_card(ipid->card_vendor,
184                                 ipid->card_device, pnp_c))) {
185                                 pnp_d = NULL;
186                                 if ((pnp_d = pnp_find_dev(pnp_c,
187                                         ipid->vendor, ipid->function, pnp_d))) {
188                                         int err;
189
190                                         printk(KERN_INFO "HiSax: %s detected\n",
191                                                 (char *)ipid->driver_data);
192                                         pnp_disable_dev(pnp_d);
193                                         err = pnp_activate_dev(pnp_d);
194                                         if (err<0) {
195                                                 printk(KERN_WARNING "%s: pnp_activate_dev ret(%d)\n",
196                                                         __FUNCTION__, err);
197                                                 return(0);
198                                         }
199                                         card->para[1] = pnp_port_start(pnp_d, 0);
200                                         card->para[0] = pnp_irq(pnp_d, 0);
201                                         if (!card->para[0] || !card->para[1]) {
202                                                 printk(KERN_ERR "HFC PnP:some resources are missing %ld/%lx\n",
203                                                         card->para[0], card->para[1]);
204                                                 pnp_disable_dev(pnp_d);
205                                                 return(0);
206                                         }
207                                         break;
208                                 } else {
209                                         printk(KERN_ERR "HFC PnP: PnP error card found, no device\n");
210                                 }
211                         }
212                         ipid++;
213                         pnp_c = NULL;
214                 } 
215                 if (!ipid->card_vendor) {
216                         printk(KERN_INFO "HFC PnP: no ISAPnP card found\n");
217                         return(0);
218                 }
219         }
220 #endif
221         cs->hw.hfcD.addr = card->para[1] & 0xfffe;
222         cs->irq = card->para[0];
223         cs->hw.hfcD.cip = 0;
224         cs->hw.hfcD.int_s1 = 0;
225         cs->hw.hfcD.send = NULL;
226         cs->bcs[0].hw.hfc.send = NULL;
227         cs->bcs[1].hw.hfc.send = NULL;
228         cs->hw.hfcD.dfifosize = 512;
229         cs->dc.hfcd.ph_state = 0;
230         cs->hw.hfcD.fifo = 255;
231         if (cs->typ == ISDN_CTYPE_TELES3C) {
232                 cs->hw.hfcD.bfifosize = 1024 + 512;
233         } else if (cs->typ == ISDN_CTYPE_ACERP10) {
234                 cs->hw.hfcD.bfifosize = 7*1024 + 512;
235         } else
236                 return (0);
237         if (!request_region(cs->hw.hfcD.addr, 2, "HFCS isdn")) {
238                 printk(KERN_WARNING
239                        "HiSax: %s config port %x-%x already in use\n",
240                        CardType[card->typ],
241                        cs->hw.hfcD.addr,
242                        cs->hw.hfcD.addr + 2);
243                 return (0);
244         }
245         printk(KERN_INFO
246                "HFCS: defined at 0x%x IRQ %d HZ %d\n",
247                cs->hw.hfcD.addr,
248                cs->irq, HZ);
249         if (cs->typ == ISDN_CTYPE_TELES3C) {
250                 /* Teles 16.3c IO ADR is 0x200 | YY0U (YY Bit 15/14 address) */
251                 outb(0x00, cs->hw.hfcD.addr);
252                 outb(0x56, cs->hw.hfcD.addr | 1);
253         } else if (cs->typ == ISDN_CTYPE_ACERP10) {
254                 /* Acer P10 IO ADR is 0x300 */
255                 outb(0x00, cs->hw.hfcD.addr);
256                 outb(0x57, cs->hw.hfcD.addr | 1);
257         }
258         set_cs_func(cs);
259         cs->hw.hfcD.timer.function = (void *) hfcs_Timer;
260         cs->hw.hfcD.timer.data = (long) cs;
261         init_timer(&cs->hw.hfcD.timer);
262         cs->cardmsg = &hfcs_card_msg;
263         cs->irq_func = &hfcs_interrupt;
264         return (1);
265 }