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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> | |
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 | */ | |
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 | ||
1da177e4 LT |
20 | static const char *ISurf_revision = "$Revision: 1.12.2.4 $"; |
21 | ||
475be4d8 | 22 | #define byteout(addr, val) outb(val, addr) |
1da177e4 LT |
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 | |
475be4d8 | 49 | ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size) |
1da177e4 LT |
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 | |
475be4d8 | 57 | WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size) |
1da177e4 LT |
58 | { |
59 | register int i; | |
475be4d8 JP |
60 | for (i = 0; i < size; i++) { |
61 | writeb(data[i], cs->hw.isurf.isac); mb(); | |
1da177e4 LT |
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 | */ | |
475be4d8 | 70 | |
1da177e4 LT |
71 | static u_char |
72 | ReadISAR(struct IsdnCardState *cs, int mode, u_char offset) | |
475be4d8 JP |
73 | { |
74 | return (readb(cs->hw.isurf.isar + offset)); | |
1da177e4 LT |
75 | } |
76 | ||
77 | static void | |
78 | WriteISAR(struct IsdnCardState *cs, int mode, u_char offset, u_char value) | |
79 | { | |
475be4d8 | 80 | writeb(value, cs->hw.isurf.isar + offset); mb(); |
1da177e4 LT |
81 | } |
82 | ||
83 | static irqreturn_t | |
7d12e780 | 84 | isurf_interrupt(int intno, void *dev_id) |
1da177e4 LT |
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); | |
475be4d8 | 93 | Start_ISAR: |
1da177e4 LT |
94 | if (val & ISAR_IRQSTA) |
95 | isar_int_main(cs); | |
96 | val = readb(cs->hw.isurf.isac + ISAC_ISTA); | |
475be4d8 | 97 | Start_ISAC: |
1da177e4 LT |
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(); | |
475be4d8 JP |
116 | writeb(0xFF, cs->hw.isurf.isac + ISAC_MASK); mb(); |
117 | writeb(0, cs->hw.isurf.isac + ISAC_MASK); mb(); | |
1da177e4 LT |
118 | writeb(ISAR_IRQMSK, cs->hw.isurf.isar + ISAR_IRQBIT); mb(); |
119 | spin_unlock_irqrestore(&cs->lock, flags); | |
120 | return IRQ_HANDLED; | |
121 | } | |
122 | ||
672c3fd9 | 123 | static void |
1da177e4 LT |
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) { | |
475be4d8 JP |
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); | |
1da177e4 | 171 | } |
475be4d8 | 172 | return (0); |
1da177e4 LT |
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 | | |
475be4d8 | 185 | ISURF_ARCOFI_RESET); |
1da177e4 LT |
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); | |
475be4d8 | 191 | return (ret); |
1da177e4 | 192 | } |
475be4d8 | 193 | return (isar_auxcmd(cs, ic)); |
1da177e4 LT |
194 | } |
195 | ||
196 | #ifdef __ISAPNP__ | |
ed5a84cd | 197 | static struct pnp_card *pnp_c = NULL; |
1da177e4 LT |
198 | #endif |
199 | ||
ed5a84cd | 200 | int setup_isurf(struct IsdnCard *card) |
1da177e4 LT |
201 | { |
202 | int ver; | |
203 | struct IsdnCardState *cs = card->cs; | |
204 | char tmp[64]; | |
205 | ||
206 | strcpy(tmp, ISurf_revision); | |
207 | printk(KERN_INFO "HiSax: ISurf driver Rev. %s\n", HiSax_getrev(tmp)); | |
475be4d8 JP |
208 | |
209 | if (cs->typ != ISDN_CTYPE_ISURF) | |
210 | return (0); | |
1da177e4 LT |
211 | if (card->para[1] && card->para[2]) { |
212 | cs->hw.isurf.reset = card->para[1]; | |
213 | cs->hw.isurf.phymem = card->para[2]; | |
214 | cs->irq = card->para[0]; | |
215 | } else { | |
216 | #ifdef __ISAPNP__ | |
217 | if (isapnp_present()) { | |
218 | struct pnp_dev *pnp_d = NULL; | |
219 | int err; | |
220 | ||
221 | cs->subtyp = 0; | |
222 | if ((pnp_c = pnp_find_card( | |
475be4d8 JP |
223 | ISAPNP_VENDOR('S', 'I', 'E'), |
224 | ISAPNP_FUNCTION(0x0010), pnp_c))) { | |
1da177e4 | 225 | if (!(pnp_d = pnp_find_dev(pnp_c, |
475be4d8 JP |
226 | ISAPNP_VENDOR('S', 'I', 'E'), |
227 | ISAPNP_FUNCTION(0x0010), pnp_d))) { | |
1da177e4 LT |
228 | printk(KERN_ERR "ISurfPnP: PnP error card found, no device\n"); |
229 | return (0); | |
230 | } | |
231 | pnp_disable_dev(pnp_d); | |
232 | err = pnp_activate_dev(pnp_d); | |
5b999fd0 KK |
233 | if (err < 0) { |
234 | pr_warn("%s: pnp_activate_dev ret=%d\n", | |
235 | __func__, err); | |
236 | return 0; | |
237 | } | |
1da177e4 LT |
238 | cs->hw.isurf.reset = pnp_port_start(pnp_d, 0); |
239 | cs->hw.isurf.phymem = pnp_mem_start(pnp_d, 1); | |
240 | cs->irq = pnp_irq(pnp_d, 0); | |
241 | if (!cs->irq || !cs->hw.isurf.reset || !cs->hw.isurf.phymem) { | |
242 | printk(KERN_ERR "ISurfPnP:some resources are missing %d/%x/%lx\n", | |
475be4d8 | 243 | cs->irq, cs->hw.isurf.reset, cs->hw.isurf.phymem); |
1da177e4 | 244 | pnp_disable_dev(pnp_d); |
475be4d8 | 245 | return (0); |
1da177e4 LT |
246 | } |
247 | } else { | |
248 | printk(KERN_INFO "ISurfPnP: no ISAPnP card found\n"); | |
475be4d8 | 249 | return (0); |
1da177e4 LT |
250 | } |
251 | } else { | |
252 | printk(KERN_INFO "ISurfPnP: no ISAPnP bus found\n"); | |
475be4d8 | 253 | return (0); |
1da177e4 LT |
254 | } |
255 | #else | |
8349304d | 256 | printk(KERN_WARNING "HiSax: Siemens I-Surf port/mem not set\n"); |
1da177e4 LT |
257 | return (0); |
258 | #endif | |
259 | } | |
260 | if (!request_region(cs->hw.isurf.reset, 1, "isurf isdn")) { | |
261 | printk(KERN_WARNING | |
475be4d8 JP |
262 | "HiSax: Siemens I-Surf config port %x already in use\n", |
263 | cs->hw.isurf.reset); | |
264 | return (0); | |
1da177e4 LT |
265 | } |
266 | if (!request_region(cs->hw.isurf.phymem, ISURF_IOMEM_SIZE, "isurf iomem")) { | |
8349304d | 267 | printk(KERN_WARNING "HiSax: Siemens I-Surf memory region " |
475be4d8 JP |
268 | "%lx-%lx already in use\n", |
269 | cs->hw.isurf.phymem, | |
270 | cs->hw.isurf.phymem + ISURF_IOMEM_SIZE); | |
1da177e4 LT |
271 | release_region(cs->hw.isurf.reset, 1); |
272 | return (0); | |
273 | } | |
274 | cs->hw.isurf.isar = ioremap(cs->hw.isurf.phymem, ISURF_IOMEM_SIZE); | |
275 | cs->hw.isurf.isac = cs->hw.isurf.isar + ISURF_ISAC_OFFSET; | |
276 | printk(KERN_INFO | |
277 | "ISurf: defined at 0x%x 0x%lx IRQ %d\n", | |
278 | cs->hw.isurf.reset, | |
279 | cs->hw.isurf.phymem, | |
280 | cs->irq); | |
281 | ||
282 | setup_isac(cs); | |
283 | cs->cardmsg = &ISurf_card_msg; | |
284 | cs->irq_func = &isurf_interrupt; | |
285 | cs->auxcmd = &isurf_auxcmd; | |
286 | cs->readisac = &ReadISAC; | |
287 | cs->writeisac = &WriteISAC; | |
288 | cs->readisacfifo = &ReadISACfifo; | |
289 | cs->writeisacfifo = &WriteISACfifo; | |
290 | cs->bcs[0].hw.isar.reg = &cs->hw.isurf.isar_r; | |
291 | cs->bcs[1].hw.isar.reg = &cs->hw.isurf.isar_r; | |
292 | test_and_set_bit(HW_ISAR, &cs->HW_Flags); | |
293 | ISACVersion(cs, "ISurf:"); | |
294 | cs->BC_Read_Reg = &ReadISAR; | |
295 | cs->BC_Write_Reg = &WriteISAR; | |
296 | cs->BC_Send_Data = &isar_fill_fifo; | |
297 | ver = ISARVersion(cs, "ISurf:"); | |
298 | if (ver < 0) { | |
299 | printk(KERN_WARNING | |
475be4d8 | 300 | "ISurf: wrong ISAR version (ret = %d)\n", ver); |
1da177e4 LT |
301 | release_io_isurf(cs); |
302 | return (0); | |
303 | } | |
304 | return (1); | |
305 | } |