2 * This software may be used and distributed according to the terms
3 * of the GNU General Public License, incorporated herein by reference.
7 #include <linux/module.h>
8 #include <linux/init.h>
9 #include <linux/interrupt.h>
14 MODULE_DESCRIPTION("ISDN4Linux: Driver for Spellcaster card");
15 MODULE_AUTHOR("Spellcaster Telecommunications Inc.");
16 MODULE_LICENSE("GPL");
17 MODULE_PARM( io
, "1-" __MODULE_STRING(MAX_CARDS
) "i");
18 MODULE_PARM(irq
, "1-" __MODULE_STRING(MAX_CARDS
) "i");
19 MODULE_PARM(ram
, "1-" __MODULE_STRING(MAX_CARDS
) "i");
20 MODULE_PARM(do_reset
, "i");
22 board
*sc_adapter
[MAX_CARDS
];
25 static char devname
[] = "scX";
26 const char version
[] = "2.0b1";
28 const char *boardname
[] = { "DataCommute/BRI", "DataCommute/PRI", "TeleCommute/BRI" };
30 /* insmod set parameters */
31 static unsigned int io
[] = {0,0,0,0};
32 static unsigned char irq
[] = {0,0,0,0};
33 static unsigned long ram
[] = {0,0,0,0};
34 static int do_reset
= 0;
36 static int sup_irq
[] = { 11, 10, 9, 5, 12, 14, 7, 3, 4, 6 };
39 extern irqreturn_t
interrupt_handler(int, void *, struct pt_regs
*);
40 extern int sndpkt(int, int, int, struct sk_buff
*);
41 extern int command(isdn_ctrl
*);
42 extern int indicate_status(int, int, ulong
, char*);
43 extern int reset(int);
45 int identify_board(unsigned long, unsigned int);
47 int irq_supported(int irq_x
)
50 for(i
=0 ; i
< MAX_IRQS
; i
++) {
51 if(sup_irq
[i
] == irq_x
)
57 static int __init
sc_init(void)
63 unsigned long memsize
= 0;
64 unsigned long features
= 0;
66 unsigned char channels
;
70 int last_base
= IOBASE_MIN
;
71 int probe_exhasted
= 0;
74 pr_info("SpellCaster ISA ISDN Adapter Driver rev. %s Loaded\n", version
);
76 pr_info("SpellCaster ISA ISDN Adapter Driver rev. %s\n", version
);
78 pr_info("Copyright (C) 1996 SpellCaster Telecommunications Inc.\n");
80 while(b
++ < MAX_CARDS
- 1) {
81 pr_debug("Probing for adapter #%d\n", b
);
83 * Initialize reusable variables
91 * See if we should probe for IO base
93 pr_debug("I/O Base for board %d is 0x%x, %s probe\n", b
, io
[b
],
94 io
[b
] == 0 ? "will" : "won't");
97 * No, I/O Base has been provided
99 for (i
= 0 ; i
< MAX_IO_REGS
- 1 ; i
++) {
100 if(!request_region(io
[b
] + i
* 0x400, 1, "sc test")) {
101 pr_debug("check_region for 0x%x failed\n", io
[b
] + i
* 0x400);
105 release_region(io
[b
] + i
* 0x400, 1);
109 * Confirm the I/O Address with a test
112 pr_debug("I/O Address 0x%x is in use.\n");
116 outb(0x18, io
[b
] + 0x400 * EXP_PAGE0
);
117 if(inb(io
[b
] + 0x400 * EXP_PAGE0
) != 0x18) {
118 pr_debug("I/O Base 0x%x fails test\n");
124 * Yes, probe for I/O Base
127 pr_debug("All probe addresses exhasted, skipping\n");
130 pr_debug("Probing for I/O...\n");
131 for (i
= last_base
; i
<= IOBASE_MAX
; i
+= IOBASE_OFFSET
) {
133 if (i
== IOBASE_MAX
) {
134 probe_exhasted
= 1; /* No more addresses to probe */
135 pr_debug("End of Probes\n");
137 last_base
= i
+ IOBASE_OFFSET
;
138 pr_debug(" checking 0x%x...", i
);
139 for ( j
= 0 ; j
< MAX_IO_REGS
- 1 ; j
++) {
140 if(!request_region(i
+ j
* 0x400, 1, "sc test")) {
141 pr_debug("Failed\n");
145 release_region(i
+ j
* 0x400, 1);
150 outb(0x18, io
[b
] + 0x400 * EXP_PAGE0
);
151 if(inb(io
[b
] + 0x400 * EXP_PAGE0
) != 0x18) {
152 pr_debug("Failed by test\n");
155 pr_debug("Passed\n");
165 * See if we should probe for shared RAM
168 pr_debug("Doing a SAFE probe reset\n");
169 outb(0xFF, io
[b
] + RESET_OFFSET
);
170 set_current_state(TASK_INTERRUPTIBLE
);
171 schedule_timeout(milliseconds(10000));
173 pr_debug("RAM Base for board %d is 0x%x, %s probe\n", b
, ram
[b
],
174 ram
[b
] == 0 ? "will" : "won't");
178 * No, the RAM base has been provided
179 * Just look for a signature and ID the
182 if(request_region(ram
[b
], SRAM_PAGESIZE
, "sc test")) {
183 pr_debug("request_region for RAM base 0x%x succeeded\n", ram
[b
]);
184 model
= identify_board(ram
[b
], io
[b
]);
185 release_region(ram
[b
], SRAM_PAGESIZE
);
190 * Yes, probe for free RAM and look for
191 * a signature and id the board model
193 for (i
= SRAM_MIN
; i
< SRAM_MAX
; i
+= SRAM_PAGESIZE
) {
194 pr_debug("Checking RAM address 0x%x...\n", i
);
195 if(request_region(i
, SRAM_PAGESIZE
, "sc test")) {
196 pr_debug(" check_region succeeded\n");
197 model
= identify_board(i
, io
[b
]);
198 release_region(i
, SRAM_PAGESIZE
);
200 pr_debug(" Identified a %s\n",
205 pr_debug(" Unidentifed or inaccessible\n");
208 pr_debug(" request failed\n");
212 * See if we found free RAM and the board model
214 if(!ram
[b
] || model
< 0) {
216 * Nope, there was no place in RAM for the
217 * board, or it couldn't be identified
219 pr_debug("Failed to find an adapter at 0x%x\n", ram
[b
]);
224 * Set the board's magic number, memory size and page register
231 features
= PRI_FEATURES
;
239 features
= BRI_FEATURES
;
242 switch(ram
[b
] >> 12 & 0x0F) {
244 pr_debug("RAM Page register set to EXP_PAGE0\n");
249 pr_debug("RAM Page register set to EXP_PAGE1\n");
254 pr_debug("RAM Page register set to EXP_PAGE2\n");
259 pr_debug("RAM Page register set to EXP_PAGE3\n");
264 pr_debug("RAM base address doesn't fall on 16K boundary\n");
268 pr_debug("current IRQ: %d b: %d\n",irq
[b
],b
);
271 * Make sure we got an IRQ
275 * No interrupt could be used
277 pr_debug("Failed to acquire an IRQ line\n");
282 * Horray! We found a board, Make sure we can register
285 interface
= kmalloc(sizeof(isdn_if
), GFP_KERNEL
);
286 if (interface
== NULL
) {
288 * Oops, can't malloc isdn_if
292 memset(interface
, 0, sizeof(isdn_if
));
294 interface
->owner
= THIS_MODULE
;
295 interface
->hl_hdrlen
= 0;
296 interface
->channels
= channels
;
297 interface
->maxbufsize
= BUFFER_SIZE
;
298 interface
->features
= features
;
299 interface
->writebuf_skb
= sndpkt
;
300 interface
->writecmd
= NULL
;
301 interface
->command
= command
;
302 strcpy(interface
->id
, devname
);
303 interface
->id
[2] = '0' + cinst
;
306 * Allocate the board structure
308 sc_adapter
[cinst
] = kmalloc(sizeof(board
), GFP_KERNEL
);
309 if (sc_adapter
[cinst
] == NULL
) {
311 * Oops, can't alloc memory for the board
316 memset(sc_adapter
[cinst
], 0, sizeof(board
));
317 spin_lock_init(&sc_adapter
[cinst
]->lock
);
319 if(!register_isdn(interface
)) {
321 * Oops, couldn't register for some reason
324 kfree(sc_adapter
[cinst
]);
328 sc_adapter
[cinst
]->card
= interface
;
329 sc_adapter
[cinst
]->driverId
= interface
->channels
;
330 strcpy(sc_adapter
[cinst
]->devicename
, interface
->id
);
331 sc_adapter
[cinst
]->nChannels
= channels
;
332 sc_adapter
[cinst
]->ramsize
= memsize
;
333 sc_adapter
[cinst
]->shmem_magic
= magic
;
334 sc_adapter
[cinst
]->shmem_pgport
= pgport
;
335 sc_adapter
[cinst
]->StartOnReset
= 1;
338 * Allocate channels status structures
340 sc_adapter
[cinst
]->channel
= kmalloc(sizeof(bchan
) * channels
, GFP_KERNEL
);
341 if (sc_adapter
[cinst
]->channel
== NULL
) {
343 * Oops, can't alloc memory for the channels
345 indicate_status(cinst
, ISDN_STAT_UNLOAD
, 0, NULL
); /* Fix me */
347 kfree(sc_adapter
[cinst
]);
350 memset(sc_adapter
[cinst
]->channel
, 0, sizeof(bchan
) * channels
);
353 * Lock down the hardware resources
355 sc_adapter
[cinst
]->interrupt
= irq
[b
];
356 if (request_irq(sc_adapter
[cinst
]->interrupt
, interrupt_handler
,
357 SA_INTERRUPT
, interface
->id
, NULL
))
359 kfree(sc_adapter
[cinst
]->channel
);
360 indicate_status(cinst
, ISDN_STAT_UNLOAD
, 0, NULL
); /* Fix me */
362 kfree(sc_adapter
[cinst
]);
366 sc_adapter
[cinst
]->iobase
= io
[b
];
367 for(i
= 0 ; i
< MAX_IO_REGS
- 1 ; i
++) {
368 sc_adapter
[cinst
]->ioport
[i
] = io
[b
] + i
* 0x400;
369 request_region(sc_adapter
[cinst
]->ioport
[i
], 1,
371 pr_debug("Requesting I/O Port %#x\n",
372 sc_adapter
[cinst
]->ioport
[i
]);
374 sc_adapter
[cinst
]->ioport
[IRQ_SELECT
] = io
[b
] + 0x2;
375 request_region(sc_adapter
[cinst
]->ioport
[IRQ_SELECT
], 1,
377 pr_debug("Requesting I/O Port %#x\n",
378 sc_adapter
[cinst
]->ioport
[IRQ_SELECT
]);
379 sc_adapter
[cinst
]->rambase
= ram
[b
];
380 request_region(sc_adapter
[cinst
]->rambase
, SRAM_PAGESIZE
,
383 pr_info(" %s (%d) - %s %d channels IRQ %d, I/O Base 0x%x, RAM Base 0x%lx\n",
384 sc_adapter
[cinst
]->devicename
,
385 sc_adapter
[cinst
]->driverId
,
386 boardname
[model
], channels
, irq
[b
], io
[b
], ram
[b
]);
389 * reset the adapter to put things in motion
397 pr_info("Failed to find any adapters, driver unloaded\n");
401 static void __exit
sc_exit(void)
405 for(i
= 0 ; i
< cinst
; i
++) {
406 pr_debug("Cleaning up after adapter %d\n", i
);
410 del_timer(&(sc_adapter
[i
]->reset_timer
));
411 del_timer(&(sc_adapter
[i
]->stat_timer
));
414 * Tell I4L we're toast
416 indicate_status(i
, ISDN_STAT_STOP
, 0, NULL
);
417 indicate_status(i
, ISDN_STAT_UNLOAD
, 0, NULL
);
422 release_region(sc_adapter
[i
]->rambase
, SRAM_PAGESIZE
);
427 FREE_IRQ(sc_adapter
[i
]->interrupt
, NULL
);
430 * Reset for a clean start
432 outb(0xFF, sc_adapter
[i
]->ioport
[SFT_RESET
]);
435 * Release the I/O Port regions
437 for(j
= 0 ; j
< MAX_IO_REGS
- 1; j
++) {
438 release_region(sc_adapter
[i
]->ioport
[j
], 1);
439 pr_debug("Releasing I/O Port %#x\n",
440 sc_adapter
[i
]->ioport
[j
]);
442 release_region(sc_adapter
[i
]->ioport
[IRQ_SELECT
], 1);
443 pr_debug("Releasing I/O Port %#x\n",
444 sc_adapter
[i
]->ioport
[IRQ_SELECT
]);
447 * Release any memory we alloced
449 kfree(sc_adapter
[i
]->channel
);
450 kfree(sc_adapter
[i
]->card
);
451 kfree(sc_adapter
[i
]);
453 pr_info("SpellCaster ISA ISDN Adapter Driver Unloaded.\n");
456 int identify_board(unsigned long rambase
, unsigned int iobase
)
466 pr_debug("Attempting to identify adapter @ 0x%x io 0x%x\n",
470 * Enable the base pointer
472 outb(rambase
>> 12, iobase
+ 0x2c00);
474 switch(rambase
>> 12 & 0x0F) {
476 pgport
= iobase
+ PG0_OFFSET
;
477 pr_debug("Page Register offset is 0x%x\n", PG0_OFFSET
);
481 pgport
= iobase
+ PG1_OFFSET
;
482 pr_debug("Page Register offset is 0x%x\n", PG1_OFFSET
);
486 pgport
= iobase
+ PG2_OFFSET
;
487 pr_debug("Page Register offset is 0x%x\n", PG2_OFFSET
);
491 pgport
= iobase
+ PG3_OFFSET
;
492 pr_debug("Page Register offset is 0x%x\n", PG3_OFFSET
);
495 pr_debug("Invalid rambase 0x%lx\n", rambase
);
500 * Try to identify a PRI card
502 outb(PRI_BASEPG_VAL
, pgport
);
503 set_current_state(TASK_INTERRUPTIBLE
);
504 schedule_timeout(HZ
);
505 sig
= readl(rambase
+ SIG_OFFSET
);
506 pr_debug("Looking for a signature, got 0x%x\n", sig
);
511 * Try to identify a PRI card
513 outb(BRI_BASEPG_VAL
, pgport
);
514 set_current_state(TASK_INTERRUPTIBLE
);
515 schedule_timeout(HZ
);
516 sig
= readl(rambase
+ SIG_OFFSET
);
517 pr_debug("Looking for a signature, got 0x%x\n", sig
);
526 sig
= readl(rambase
+ SIG_OFFSET
);
527 pr_debug("Looking for a signature, got 0x%x\n", sig
);
531 dpm
= (DualPortMemory
*) rambase
;
533 memset(&sndmsg
, 0, MSG_LEN
);
534 sndmsg
.msg_byte_cnt
= 3;
535 sndmsg
.type
= cmReqType1
;
536 sndmsg
.class = cmReqClass0
;
537 sndmsg
.code
= cmReqHWConfig
;
538 memcpy_toio(&(dpm
->req_queue
[dpm
->req_head
++]), &sndmsg
, MSG_LEN
);
539 outb(0, iobase
+ 0x400);
540 pr_debug("Sent HWConfig message\n");
542 * Wait for the response
545 while((inb(iobase
+ FIFOSTAT_OFFSET
) & RF_HAS_DATA
) && x
< 100) {
546 set_current_state(TASK_INTERRUPTIBLE
);
551 pr_debug("Timeout waiting for response\n");
555 memcpy_fromio(&rcvmsg
, &(dpm
->rsp_queue
[dpm
->rsp_tail
]), MSG_LEN
);
556 pr_debug("Got HWConfig response, status = 0x%x\n", rcvmsg
.rsp_status
);
557 memcpy(&hwci
, &(rcvmsg
.msg_data
.HWCresponse
), sizeof(HWConfig_pl
));
558 pr_debug("Hardware Config: Interface: %s, RAM Size: %d, Serial: %s\n"
559 " Part: %s, Rev: %s\n",
560 hwci
.st_u_sense
? "S/T" : "U", hwci
.ram_size
,
561 hwci
.serial_no
, hwci
.part_no
, hwci
.rev_no
);
563 if(!strncmp(PRI_PARTNO
, hwci
.part_no
, 6))
565 if(!strncmp(BRI_PARTNO
, hwci
.part_no
, 6))
571 module_init(sc_init
);
572 module_exit(sc_exit
);