[ISDN] Hisax: eliminate many unnecessary references to CardType[]
[linux-2.6.git] / drivers / isdn / hisax / isurf.c
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 static const char *ISurf_revision = "$Revision: 1.12.2.4 $";
21
22 #define byteout(addr,val) outb(val,addr)
23 #define bytein(addr) inb(addr)
24
25 #define ISURF_ISAR_RESET        1
26 #define ISURF_ISAC_RESET        2
27 #define ISURF_ISAR_EA           4
28 #define ISURF_ARCOFI_RESET      8
29 #define ISURF_RESET (ISURF_ISAR_RESET | ISURF_ISAC_RESET | ISURF_ARCOFI_RESET)
30
31 #define ISURF_ISAR_OFFSET       0
32 #define ISURF_ISAC_OFFSET       0x100
33 #define ISURF_IOMEM_SIZE        0x400
34 /* Interface functions */
35
36 static u_char
37 ReadISAC(struct IsdnCardState *cs, u_char offset)
38 {
39         return (readb(cs->hw.isurf.isac + offset));
40 }
41
42 static void
43 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
44 {
45         writeb(value, cs->hw.isurf.isac + offset); mb();
46 }
47
48 static void
49 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
50 {
51         register int i;
52         for (i = 0; i < size; i++)
53                 data[i] = readb(cs->hw.isurf.isac);
54 }
55
56 static void
57 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
58 {
59         register int i;
60         for (i = 0; i < size; i++){
61                 writeb(data[i], cs->hw.isurf.isac);mb();
62         }
63 }
64
65 /* ISAR access routines
66  * mode = 0 access with IRQ on
67  * mode = 1 access with IRQ off
68  * mode = 2 access with IRQ off and using last offset
69  */
70   
71 static u_char
72 ReadISAR(struct IsdnCardState *cs, int mode, u_char offset)
73 {       
74         return(readb(cs->hw.isurf.isar + offset));
75 }
76
77 static void
78 WriteISAR(struct IsdnCardState *cs, int mode, u_char offset, u_char value)
79 {
80         writeb(value, cs->hw.isurf.isar + offset);mb();
81 }
82
83 static irqreturn_t
84 isurf_interrupt(int intno, void *dev_id)
85 {
86         struct IsdnCardState *cs = dev_id;
87         u_char val;
88         int cnt = 5;
89         u_long flags;
90
91         spin_lock_irqsave(&cs->lock, flags);
92         val = readb(cs->hw.isurf.isar + ISAR_IRQBIT);
93       Start_ISAR:
94         if (val & ISAR_IRQSTA)
95                 isar_int_main(cs);
96         val = readb(cs->hw.isurf.isac + ISAC_ISTA);
97       Start_ISAC:
98         if (val)
99                 isac_interrupt(cs, val);
100         val = readb(cs->hw.isurf.isar + ISAR_IRQBIT);
101         if ((val & ISAR_IRQSTA) && --cnt) {
102                 if (cs->debug & L1_DEB_HSCX)
103                         debugl1(cs, "ISAR IntStat after IntRoutine");
104                 goto Start_ISAR;
105         }
106         val = readb(cs->hw.isurf.isac + ISAC_ISTA);
107         if (val && --cnt) {
108                 if (cs->debug & L1_DEB_ISAC)
109                         debugl1(cs, "ISAC IntStat after IntRoutine");
110                 goto Start_ISAC;
111         }
112         if (!cnt)
113                 printk(KERN_WARNING "ISurf IRQ LOOP\n");
114
115         writeb(0, cs->hw.isurf.isar + ISAR_IRQBIT); mb();
116         writeb(0xFF, cs->hw.isurf.isac + ISAC_MASK);mb();
117         writeb(0, cs->hw.isurf.isac + ISAC_MASK);mb();
118         writeb(ISAR_IRQMSK, cs->hw.isurf.isar + ISAR_IRQBIT); mb();
119         spin_unlock_irqrestore(&cs->lock, flags);
120         return IRQ_HANDLED;
121 }
122
123 static void
124 release_io_isurf(struct IsdnCardState *cs)
125 {
126         release_region(cs->hw.isurf.reset, 1);
127         iounmap(cs->hw.isurf.isar);
128         release_mem_region(cs->hw.isurf.phymem, ISURF_IOMEM_SIZE);
129 }
130
131 static void
132 reset_isurf(struct IsdnCardState *cs, u_char chips)
133 {
134         printk(KERN_INFO "ISurf: resetting card\n");
135
136         byteout(cs->hw.isurf.reset, chips); /* Reset On */
137         mdelay(10);
138         byteout(cs->hw.isurf.reset, ISURF_ISAR_EA); /* Reset Off */
139         mdelay(10);
140 }
141
142 static int
143 ISurf_card_msg(struct IsdnCardState *cs, int mt, void *arg)
144 {
145         u_long flags;
146
147         switch (mt) {
148                 case CARD_RESET:
149                         spin_lock_irqsave(&cs->lock, flags);
150                         reset_isurf(cs, ISURF_RESET);
151                         spin_unlock_irqrestore(&cs->lock, flags);
152                         return(0);
153                 case CARD_RELEASE:
154                         release_io_isurf(cs);
155                         return(0);
156                 case CARD_INIT:
157                         spin_lock_irqsave(&cs->lock, flags);
158                         reset_isurf(cs, ISURF_RESET);
159                         clear_pending_isac_ints(cs);
160                         writeb(0, cs->hw.isurf.isar+ISAR_IRQBIT);mb();
161                         initisac(cs);
162                         initisar(cs);
163                         /* Reenable ISAC IRQ */
164                         cs->writeisac(cs, ISAC_MASK, 0);
165                         /* RESET Receiver and Transmitter */
166                         cs->writeisac(cs, ISAC_CMDR, 0x41);
167                         spin_unlock_irqrestore(&cs->lock, flags);
168                         return(0);
169                 case CARD_TEST:
170                         return(0);
171         }
172         return(0);
173 }
174
175 static int
176 isurf_auxcmd(struct IsdnCardState *cs, isdn_ctrl *ic) {
177         int ret;
178         u_long flags;
179
180         if ((ic->command == ISDN_CMD_IOCTL) && (ic->arg == 9)) {
181                 ret = isar_auxcmd(cs, ic);
182                 spin_lock_irqsave(&cs->lock, flags);
183                 if (!ret) {
184                         reset_isurf(cs, ISURF_ISAR_EA | ISURF_ISAC_RESET |
185                                 ISURF_ARCOFI_RESET);
186                         initisac(cs);
187                         cs->writeisac(cs, ISAC_MASK, 0);
188                         cs->writeisac(cs, ISAC_CMDR, 0x41);
189                 }
190                 spin_unlock_irqrestore(&cs->lock, flags);
191                 return(ret);
192         }
193         return(isar_auxcmd(cs, ic));
194 }
195
196 #ifdef __ISAPNP__
197 static struct pnp_card *pnp_c __devinitdata = NULL;
198 #endif
199
200 int __devinit
201 setup_isurf(struct IsdnCard *card)
202 {
203         int ver;
204         struct IsdnCardState *cs = card->cs;
205         char tmp[64];
206
207         strcpy(tmp, ISurf_revision);
208         printk(KERN_INFO "HiSax: ISurf driver Rev. %s\n", HiSax_getrev(tmp));
209         
210         if (cs->typ != ISDN_CTYPE_ISURF)
211                 return(0);
212         if (card->para[1] && card->para[2]) {
213                 cs->hw.isurf.reset = card->para[1];
214                 cs->hw.isurf.phymem = card->para[2];
215                 cs->irq = card->para[0];
216         } else {
217 #ifdef __ISAPNP__
218                 if (isapnp_present()) {
219                         struct pnp_dev *pnp_d = NULL;
220                         int err;
221
222                         cs->subtyp = 0;
223                         if ((pnp_c = pnp_find_card(
224                                 ISAPNP_VENDOR('S', 'I', 'E'),
225                                 ISAPNP_FUNCTION(0x0010), pnp_c))) {
226                                 if (!(pnp_d = pnp_find_dev(pnp_c,
227                                         ISAPNP_VENDOR('S', 'I', 'E'),
228                                         ISAPNP_FUNCTION(0x0010), pnp_d))) {
229                                         printk(KERN_ERR "ISurfPnP: PnP error card found, no device\n");
230                                         return (0);
231                                 }
232                                 pnp_disable_dev(pnp_d);
233                                 err = pnp_activate_dev(pnp_d);
234                                 cs->hw.isurf.reset = pnp_port_start(pnp_d, 0);
235                                 cs->hw.isurf.phymem = pnp_mem_start(pnp_d, 1);
236                                 cs->irq = pnp_irq(pnp_d, 0);
237                                 if (!cs->irq || !cs->hw.isurf.reset || !cs->hw.isurf.phymem) {
238                                         printk(KERN_ERR "ISurfPnP:some resources are missing %d/%x/%lx\n",
239                                                 cs->irq, cs->hw.isurf.reset, cs->hw.isurf.phymem);
240                                         pnp_disable_dev(pnp_d);
241                                         return(0);
242                                 }
243                         } else {
244                                 printk(KERN_INFO "ISurfPnP: no ISAPnP card found\n");
245                                 return(0);
246                         }
247                 } else {
248                         printk(KERN_INFO "ISurfPnP: no ISAPnP bus found\n");
249                         return(0);
250                 }
251 #else
252                 printk(KERN_WARNING "HiSax: Siemens I-Surf port/mem not set\n");
253                 return (0);
254 #endif
255         }
256         if (!request_region(cs->hw.isurf.reset, 1, "isurf isdn")) {
257                 printk(KERN_WARNING
258                         "HiSax: Siemens I-Surf config port %x already in use\n",
259                         cs->hw.isurf.reset);
260                         return (0);
261         }
262         if (!request_region(cs->hw.isurf.phymem, ISURF_IOMEM_SIZE, "isurf iomem")) {
263                 printk(KERN_WARNING "HiSax: Siemens I-Surf memory region "
264                         "%lx-%lx already in use\n",
265                         cs->hw.isurf.phymem,
266                         cs->hw.isurf.phymem + ISURF_IOMEM_SIZE);
267                 release_region(cs->hw.isurf.reset, 1);
268                 return (0);
269         }
270         cs->hw.isurf.isar = ioremap(cs->hw.isurf.phymem, ISURF_IOMEM_SIZE);
271         cs->hw.isurf.isac = cs->hw.isurf.isar + ISURF_ISAC_OFFSET;
272         printk(KERN_INFO
273                "ISurf: defined at 0x%x 0x%lx IRQ %d\n",
274                cs->hw.isurf.reset,
275                cs->hw.isurf.phymem,
276                cs->irq);
277
278         setup_isac(cs);
279         cs->cardmsg = &ISurf_card_msg;
280         cs->irq_func = &isurf_interrupt;
281         cs->auxcmd = &isurf_auxcmd;
282         cs->readisac = &ReadISAC;
283         cs->writeisac = &WriteISAC;
284         cs->readisacfifo = &ReadISACfifo;
285         cs->writeisacfifo = &WriteISACfifo;
286         cs->bcs[0].hw.isar.reg = &cs->hw.isurf.isar_r;
287         cs->bcs[1].hw.isar.reg = &cs->hw.isurf.isar_r;
288         test_and_set_bit(HW_ISAR, &cs->HW_Flags);
289         ISACVersion(cs, "ISurf:");
290         cs->BC_Read_Reg = &ReadISAR;
291         cs->BC_Write_Reg = &WriteISAR;
292         cs->BC_Send_Data = &isar_fill_fifo;
293         ver = ISARVersion(cs, "ISurf:");
294         if (ver < 0) {
295                 printk(KERN_WARNING
296                         "ISurf: wrong ISAR version (ret = %d)\n", ver);
297                 release_io_isurf(cs);
298                 return (0);
299         }
300         return (1);
301 }