1 /* $Id: act2000_isa.c,v 1.11.6.3 2001/09/23 22:24:32 kai Exp $
3 * ISDN lowlevel-module for the IBM ISDN-S0 Active 2000 (ISA-Version).
6 * Copyright by Fritz Elfert <fritz@isdn4linux.de>
8 * This software may be used and distributed according to the terms
9 * of the GNU General Public License, incorporated herein by reference.
11 * Thanks to Friedemann Baitinger and IBM Germany
16 #include "act2000_isa.h"
19 static act2000_card
*irq2card_map
[16];
22 act2000_isa_delay(long t
)
24 set_current_state(TASK_INTERRUPTIBLE
);
29 * Reset Controller, then try to read the Card's signature.
31 * 1 = Signature found.
32 * 0 = Signature not found.
35 act2000_isa_reset(unsigned short portbase
)
43 if ((reg
= inb(portbase
+ ISA_COR
)) != 0xff) {
44 outb(reg
| ISA_COR_RESET
, portbase
+ ISA_COR
);
46 outb(reg
, portbase
+ ISA_COR
);
49 for (i
= 0; i
< 16; i
++) {
50 if (inb(portbase
+ ISA_ISR
) & ISA_ISR_SERIAL
)
54 if (serial
== ISA_SER_ID
)
61 act2000_isa_detect(unsigned short portbase
)
65 if (request_region(portbase
, ACT2000_PORTLEN
, "act2000isa")) {
66 ret
= act2000_isa_reset(portbase
);
67 release_region(portbase
, ISA_REGION
);
73 act2000_isa_interrupt(int irq
, void *dev_id
, struct pt_regs
*regs
)
75 act2000_card
*card
= irq2card_map
[irq
];
80 "act2000: Spurious interrupt!\n");
83 istatus
= (inb(ISA_PORT_ISR
) & 0x07);
84 if (istatus
& ISA_ISR_OUT
) {
85 /* RX fifo has data */
86 istatus
&= ISA_ISR_OUT_MASK
;
87 outb(0, ISA_PORT_SIS
);
88 act2000_isa_receive(card
);
89 outb(ISA_SIS_INT
, ISA_PORT_SIS
);
91 if (istatus
& ISA_ISR_ERR
) {
93 istatus
&= ISA_ISR_ERR_MASK
;
94 printk(KERN_WARNING
"act2000: errIRQ\n");
97 printk(KERN_DEBUG
"act2000: ?IRQ %d %02x\n", irq
, istatus
);
102 act2000_isa_select_irq(act2000_card
* card
)
106 reg
= (inb(ISA_PORT_COR
) & ~ISA_COR_IRQOFF
) | ISA_COR_PERR
;
130 outb(reg
, ISA_PORT_COR
);
134 act2000_isa_enable_irq(act2000_card
* card
)
136 act2000_isa_select_irq(card
);
137 /* Enable READ irq */
138 outb(ISA_SIS_INT
, ISA_PORT_SIS
);
142 * Install interrupt handler, enable irq on card.
143 * If irq is -1, choose next free irq, else irq is given explicitely.
146 act2000_isa_config_irq(act2000_card
* card
, short irq
)
148 if (card
->flags
& ACT2000_FLAGS_IVALID
) {
149 free_irq(card
->irq
, NULL
);
150 irq2card_map
[card
->irq
] = NULL
;
152 card
->flags
&= ~ACT2000_FLAGS_IVALID
;
153 outb(ISA_COR_IRQOFF
, ISA_PORT_COR
);
157 if (!request_irq(irq
, &act2000_isa_interrupt
, 0, card
->regname
, NULL
)) {
159 irq2card_map
[card
->irq
] = card
;
160 card
->flags
|= ACT2000_FLAGS_IVALID
;
162 "act2000: Could not request irq %d\n",irq
);
165 act2000_isa_select_irq(card
);
166 /* Disable READ and WRITE irq */
167 outb(0, ISA_PORT_SIS
);
168 outb(0, ISA_PORT_SOS
);
174 act2000_isa_config_port(act2000_card
* card
, unsigned short portbase
)
176 if (card
->flags
& ACT2000_FLAGS_PVALID
) {
177 release_region(card
->port
, ISA_REGION
);
178 card
->flags
&= ~ACT2000_FLAGS_PVALID
;
180 if (request_region(portbase
, ACT2000_PORTLEN
, card
->regname
) == NULL
)
183 card
->port
= portbase
;
184 card
->flags
|= ACT2000_FLAGS_PVALID
;
190 * Release ressources, used by an adaptor.
193 act2000_isa_release(act2000_card
* card
)
197 spin_lock_irqsave(&card
->lock
, flags
);
198 if (card
->flags
& ACT2000_FLAGS_IVALID
) {
199 free_irq(card
->irq
, NULL
);
200 irq2card_map
[card
->irq
] = NULL
;
202 card
->flags
&= ~ACT2000_FLAGS_IVALID
;
203 if (card
->flags
& ACT2000_FLAGS_PVALID
)
204 release_region(card
->port
, ISA_REGION
);
205 card
->flags
&= ~ACT2000_FLAGS_PVALID
;
206 spin_unlock_irqrestore(&card
->lock
, flags
);
210 act2000_isa_writeb(act2000_card
* card
, u_char data
)
215 if (inb(ISA_PORT_SOS
) & ISA_SOS_READY
) {
216 outb(data
, ISA_PORT_SDO
);
227 act2000_isa_readb(act2000_card
* card
, u_char
* data
)
232 if (inb(ISA_PORT_SIS
) & ISA_SIS_READY
) {
233 *data
= inb(ISA_PORT_SDI
);
244 act2000_isa_receive(act2000_card
*card
)
248 if (test_and_set_bit(ACT2000_LOCK_RX
, (void *) &card
->ilock
) != 0)
250 while (!act2000_isa_readb(card
, &c
)) {
251 if (card
->idat
.isa
.rcvidx
< 8) {
252 card
->idat
.isa
.rcvhdr
[card
->idat
.isa
.rcvidx
++] = c
;
253 if (card
->idat
.isa
.rcvidx
== 8) {
254 int valid
= actcapi_chkhdr(card
, (actcapi_msghdr
*)&card
->idat
.isa
.rcvhdr
);
257 card
->idat
.isa
.rcvlen
= ((actcapi_msghdr
*)&card
->idat
.isa
.rcvhdr
)->len
;
258 card
->idat
.isa
.rcvskb
= dev_alloc_skb(card
->idat
.isa
.rcvlen
);
259 if (card
->idat
.isa
.rcvskb
== NULL
) {
260 card
->idat
.isa
.rcvignore
= 1;
262 "act2000_isa_receive: no memory\n");
263 test_and_clear_bit(ACT2000_LOCK_RX
, (void *) &card
->ilock
);
266 memcpy(skb_put(card
->idat
.isa
.rcvskb
, 8), card
->idat
.isa
.rcvhdr
, 8);
267 card
->idat
.isa
.rcvptr
= skb_put(card
->idat
.isa
.rcvskb
, card
->idat
.isa
.rcvlen
- 8);
269 card
->idat
.isa
.rcvidx
= 0;
271 "act2000_isa_receive: Invalid CAPI msg\n");
273 int i
; __u8
*p
; __u8
*c
; __u8 tmp
[30];
274 for (i
= 0, p
= (__u8
*)&card
->idat
.isa
.rcvhdr
, c
= tmp
; i
< 8; i
++)
275 c
+= sprintf(c
, "%02x ", *(p
++));
276 printk(KERN_WARNING
"act2000_isa_receive: %s\n", tmp
);
281 if (!card
->idat
.isa
.rcvignore
)
282 *card
->idat
.isa
.rcvptr
++ = c
;
283 if (++card
->idat
.isa
.rcvidx
>= card
->idat
.isa
.rcvlen
) {
284 if (!card
->idat
.isa
.rcvignore
) {
285 skb_queue_tail(&card
->rcvq
, card
->idat
.isa
.rcvskb
);
286 act2000_schedule_rx(card
);
288 card
->idat
.isa
.rcvidx
= 0;
289 card
->idat
.isa
.rcvlen
= 8;
290 card
->idat
.isa
.rcvignore
= 0;
291 card
->idat
.isa
.rcvskb
= NULL
;
292 card
->idat
.isa
.rcvptr
= card
->idat
.isa
.rcvhdr
;
296 if (!(card
->flags
& ACT2000_FLAGS_IVALID
)) {
297 /* In polling mode, schedule myself */
298 if ((card
->idat
.isa
.rcvidx
) &&
299 (card
->idat
.isa
.rcvignore
||
300 (card
->idat
.isa
.rcvidx
< card
->idat
.isa
.rcvlen
)))
301 act2000_schedule_poll(card
);
303 test_and_clear_bit(ACT2000_LOCK_RX
, (void *) &card
->ilock
);
307 act2000_isa_send(act2000_card
* card
)
314 if (test_and_set_bit(ACT2000_LOCK_TX
, (void *) &card
->ilock
) != 0)
317 spin_lock_irqsave(&card
->lock
, flags
);
319 if ((card
->sbuf
= skb_dequeue(&card
->sndq
))) {
320 card
->ack_msg
= card
->sbuf
->data
;
321 msg
= (actcapi_msg
*)card
->sbuf
->data
;
322 if ((msg
->hdr
.cmd
.cmd
== 0x86) &&
323 (msg
->hdr
.cmd
.subcmd
== 0) ) {
324 /* Save flags in message */
325 card
->need_b3ack
= msg
->msg
.data_b3_req
.flags
;
326 msg
->msg
.data_b3_req
.flags
= 0;
330 spin_unlock_irqrestore(&card
->lock
, flags
);
332 /* No more data to send */
333 test_and_clear_bit(ACT2000_LOCK_TX
, (void *) &card
->ilock
);
339 if (act2000_isa_writeb(card
, *(skb
->data
))) {
340 /* Fifo is full, but more data to send */
341 test_and_clear_bit(ACT2000_LOCK_TX
, (void *) &card
->ilock
);
342 /* Schedule myself */
343 act2000_schedule_tx(card
);
349 msg
= (actcapi_msg
*)card
->ack_msg
;
350 if ((msg
->hdr
.cmd
.cmd
== 0x86) &&
351 (msg
->hdr
.cmd
.subcmd
== 0) ) {
353 * If it's user data, reset data-ptr
354 * and put skb into ackq.
356 skb
->data
= card
->ack_msg
;
357 /* Restore flags in message */
358 msg
->msg
.data_b3_req
.flags
= card
->need_b3ack
;
359 skb_queue_tail(&card
->ackq
, skb
);
367 * Get firmware ID, check for 'ISDN' signature.
370 act2000_isa_getid(act2000_card
* card
)
374 u_char
*p
= (u_char
*) & fid
;
380 if (act2000_isa_readb(card
, p
++))
385 printk(KERN_WARNING
"act2000: No Firmware-ID!\n");
389 fid
.revlen
[0] = '\0';
390 if (strcmp(fid
.isdn
, "ISDN")) {
391 printk(KERN_WARNING
"act2000: Wrong Firmware-ID!\n");
394 if ((p
= strchr(fid
.revision
, '\n')))
396 printk(KERN_INFO
"act2000: Firmware-ID: %s\n", fid
.revision
);
397 if (card
->flags
& ACT2000_FLAGS_IVALID
) {
398 printk(KERN_DEBUG
"Enabling Interrupts ...\n");
399 act2000_isa_enable_irq(card
);
405 * Download microcode into card, check Firmware signature.
408 act2000_isa_download(act2000_card
* card
, act2000_ddef __user
* cb
)
420 if (!act2000_isa_reset(card
->port
))
422 act2000_isa_delay(HZ
/ 2);
423 if(copy_from_user(&cblock
, cb
, sizeof(cblock
)))
425 length
= cblock
.length
;
427 if ((ret
= verify_area(VERIFY_READ
, p
, length
)))
429 buf
= (u_char
*) kmalloc(1024, GFP_KERNEL
);
434 l
= (length
> 1024) ? 1024 : length
;
437 if (copy_from_user(buf
, p
, l
)) {
442 if (act2000_isa_writeb(card
, *b
++)) {
444 "act2000: loader timed out"
445 " len=%d c=%d\n", length
, c
);
455 act2000_isa_delay(HZ
/ 2);
456 return (act2000_isa_getid(card
));