Commit | Line | Data |
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1da177e4 LT |
1 | /* Derived from Applicom driver ac.c for SCO Unix */ |
2 | /* Ported by David Woodhouse, Axiom (Cambridge) Ltd. */ | |
3 | /* dwmw2@infradead.org 30/8/98 */ | |
4 | /* $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $ */ | |
5 | /* This module is for Linux 2.1 and 2.2 series kernels. */ | |
6 | /*****************************************************************************/ | |
7 | /* J PAGET 18/02/94 passage V2.4.2 ioctl avec code 2 reset to les interrupt */ | |
8 | /* ceci pour reseter correctement apres une sortie sauvage */ | |
9 | /* J PAGET 02/05/94 passage V2.4.3 dans le traitement de d'interruption, */ | |
10 | /* LoopCount n'etait pas initialise a 0. */ | |
11 | /* F LAFORSE 04/07/95 version V2.6.0 lecture bidon apres acces a une carte */ | |
12 | /* pour liberer le bus */ | |
13 | /* J.PAGET 19/11/95 version V2.6.1 Nombre, addresse,irq n'est plus configure */ | |
14 | /* et passe en argument a acinit, mais est scrute sur le bus pour s'adapter */ | |
15 | /* au nombre de cartes presentes sur le bus. IOCL code 6 affichait V2.4.3 */ | |
16 | /* F.LAFORSE 28/11/95 creation de fichiers acXX.o avec les differentes */ | |
17 | /* adresses de base des cartes, IOCTL 6 plus complet */ | |
18 | /* J.PAGET le 19/08/96 copie de la version V2.6 en V2.8.0 sans modification */ | |
19 | /* de code autre que le texte V2.6.1 en V2.8.0 */ | |
20 | /*****************************************************************************/ | |
21 | ||
22 | ||
23 | #include <linux/kernel.h> | |
24 | #include <linux/module.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/errno.h> | |
28 | #include <linux/miscdevice.h> | |
29 | #include <linux/pci.h> | |
30 | #include <linux/wait.h> | |
31 | #include <linux/init.h> | |
32 | #include <linux/fs.h> | |
33 | ||
34 | #include <asm/io.h> | |
35 | #include <asm/uaccess.h> | |
36 | ||
37 | #include "applicom.h" | |
38 | ||
39 | ||
40 | /* NOTE: We use for loops with {write,read}b() instead of | |
41 | memcpy_{from,to}io throughout this driver. This is because | |
42 | the board doesn't correctly handle word accesses - only | |
43 | bytes. | |
44 | */ | |
45 | ||
46 | ||
47 | #undef DEBUG | |
48 | ||
49 | #define MAX_BOARD 8 /* maximum of pc board possible */ | |
50 | #define MAX_ISA_BOARD 4 | |
51 | #define LEN_RAM_IO 0x800 | |
52 | #define AC_MINOR 157 | |
53 | ||
54 | #ifndef PCI_VENDOR_ID_APPLICOM | |
55 | #define PCI_VENDOR_ID_APPLICOM 0x1389 | |
56 | #define PCI_DEVICE_ID_APPLICOM_PCIGENERIC 0x0001 | |
57 | #define PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN 0x0002 | |
58 | #define PCI_DEVICE_ID_APPLICOM_PCI2000PFB 0x0003 | |
59 | #endif | |
60 | #define MAX_PCI_DEVICE_NUM 3 | |
61 | ||
62 | static char *applicom_pci_devnames[] = { | |
63 | "PCI board", | |
64 | "PCI2000IBS / PCI2000CAN", | |
65 | "PCI2000PFB" | |
66 | }; | |
67 | ||
68 | static struct pci_device_id applicom_pci_tbl[] = { | |
69 | { PCI_VENDOR_ID_APPLICOM, PCI_DEVICE_ID_APPLICOM_PCIGENERIC, | |
70 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
71 | { PCI_VENDOR_ID_APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN, | |
72 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
73 | { PCI_VENDOR_ID_APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000PFB, | |
74 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
75 | { 0 } | |
76 | }; | |
77 | MODULE_DEVICE_TABLE(pci, applicom_pci_tbl); | |
78 | ||
79 | MODULE_AUTHOR("David Woodhouse & Applicom International"); | |
80 | MODULE_DESCRIPTION("Driver for Applicom Profibus card"); | |
81 | MODULE_LICENSE("GPL"); | |
82 | ||
83 | MODULE_SUPPORTED_DEVICE("ac"); | |
84 | ||
85 | ||
86 | static struct applicom_board { | |
87 | unsigned long PhysIO; | |
88 | void __iomem *RamIO; | |
89 | wait_queue_head_t FlagSleepSend; | |
90 | long irq; | |
91 | spinlock_t mutex; | |
92 | } apbs[MAX_BOARD]; | |
93 | ||
94 | static unsigned int irq = 0; /* interrupt number IRQ */ | |
95 | static unsigned long mem = 0; /* physical segment of board */ | |
96 | ||
97 | module_param(irq, uint, 0); | |
98 | MODULE_PARM_DESC(irq, "IRQ of the Applicom board"); | |
99 | module_param(mem, ulong, 0); | |
100 | MODULE_PARM_DESC(mem, "Shared Memory Address of Applicom board"); | |
101 | ||
102 | static unsigned int numboards; /* number of installed boards */ | |
103 | static volatile unsigned char Dummy; | |
104 | static DECLARE_WAIT_QUEUE_HEAD(FlagSleepRec); | |
105 | static unsigned int WriteErrorCount; /* number of write error */ | |
106 | static unsigned int ReadErrorCount; /* number of read error */ | |
107 | static unsigned int DeviceErrorCount; /* number of device error */ | |
108 | ||
109 | static ssize_t ac_read (struct file *, char __user *, size_t, loff_t *); | |
110 | static ssize_t ac_write (struct file *, const char __user *, size_t, loff_t *); | |
111 | static int ac_ioctl(struct inode *, struct file *, unsigned int, | |
112 | unsigned long); | |
113 | static irqreturn_t ac_interrupt(int, void *, struct pt_regs *); | |
114 | ||
115 | static struct file_operations ac_fops = { | |
116 | .owner = THIS_MODULE, | |
117 | .llseek = no_llseek, | |
118 | .read = ac_read, | |
119 | .write = ac_write, | |
120 | .ioctl = ac_ioctl, | |
121 | }; | |
122 | ||
123 | static struct miscdevice ac_miscdev = { | |
124 | AC_MINOR, | |
125 | "ac", | |
126 | &ac_fops | |
127 | }; | |
128 | ||
129 | static int dummy; /* dev_id for request_irq() */ | |
130 | ||
131 | static int ac_register_board(unsigned long physloc, void __iomem *loc, | |
132 | unsigned char boardno) | |
133 | { | |
134 | volatile unsigned char byte_reset_it; | |
135 | ||
136 | if((readb(loc + CONF_END_TEST) != 0x00) || | |
137 | (readb(loc + CONF_END_TEST + 1) != 0x55) || | |
138 | (readb(loc + CONF_END_TEST + 2) != 0xAA) || | |
139 | (readb(loc + CONF_END_TEST + 3) != 0xFF)) | |
140 | return 0; | |
141 | ||
142 | if (!boardno) | |
143 | boardno = readb(loc + NUMCARD_OWNER_TO_PC); | |
144 | ||
e60b6e2f | 145 | if (!boardno || boardno > MAX_BOARD) { |
1da177e4 LT |
146 | printk(KERN_WARNING "Board #%d (at 0x%lx) is out of range (1 <= x <= %d).\n", |
147 | boardno, physloc, MAX_BOARD); | |
148 | return 0; | |
149 | } | |
150 | ||
151 | if (apbs[boardno - 1].RamIO) { | |
152 | printk(KERN_WARNING "Board #%d (at 0x%lx) conflicts with previous board #%d (at 0x%lx)\n", | |
153 | boardno, physloc, boardno, apbs[boardno-1].PhysIO); | |
154 | return 0; | |
155 | } | |
156 | ||
157 | boardno--; | |
158 | ||
159 | apbs[boardno].PhysIO = physloc; | |
160 | apbs[boardno].RamIO = loc; | |
161 | init_waitqueue_head(&apbs[boardno].FlagSleepSend); | |
162 | spin_lock_init(&apbs[boardno].mutex); | |
163 | byte_reset_it = readb(loc + RAM_IT_TO_PC); | |
164 | ||
165 | numboards++; | |
166 | return boardno + 1; | |
167 | } | |
168 | ||
169 | #ifdef MODULE | |
170 | ||
171 | #define applicom_init init_module | |
172 | ||
173 | void cleanup_module(void) | |
174 | { | |
819a3eba | 175 | unsigned int i; |
1da177e4 LT |
176 | |
177 | misc_deregister(&ac_miscdev); | |
178 | ||
179 | for (i = 0; i < MAX_BOARD; i++) { | |
180 | ||
181 | if (!apbs[i].RamIO) | |
182 | continue; | |
183 | ||
184 | if (apbs[i].irq) | |
185 | free_irq(apbs[i].irq, &dummy); | |
186 | ||
187 | iounmap(apbs[i].RamIO); | |
188 | } | |
189 | } | |
190 | ||
191 | #endif /* MODULE */ | |
192 | ||
193 | int __init applicom_init(void) | |
194 | { | |
195 | int i, numisa = 0; | |
196 | struct pci_dev *dev = NULL; | |
197 | void __iomem *RamIO; | |
819a3eba | 198 | int boardno, ret; |
1da177e4 LT |
199 | |
200 | printk(KERN_INFO "Applicom driver: $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $\n"); | |
201 | ||
202 | /* No mem and irq given - check for a PCI card */ | |
203 | ||
204 | while ( (dev = pci_get_class(PCI_CLASS_OTHERS << 16, dev))) { | |
205 | ||
206 | if (dev->vendor != PCI_VENDOR_ID_APPLICOM) | |
207 | continue; | |
208 | ||
209 | if (dev->device > MAX_PCI_DEVICE_NUM || dev->device == 0) | |
210 | continue; | |
211 | ||
212 | if (pci_enable_device(dev)) | |
213 | return -EIO; | |
214 | ||
215 | RamIO = ioremap(dev->resource[0].start, LEN_RAM_IO); | |
216 | ||
217 | if (!RamIO) { | |
218 | printk(KERN_INFO "ac.o: Failed to ioremap PCI memory space at 0x%lx\n", dev->resource[0].start); | |
219 | pci_disable_device(dev); | |
220 | return -EIO; | |
221 | } | |
222 | ||
223 | printk(KERN_INFO "Applicom %s found at mem 0x%lx, irq %d\n", | |
224 | applicom_pci_devnames[dev->device-1], dev->resource[0].start, | |
225 | dev->irq); | |
226 | ||
227 | boardno = ac_register_board(dev->resource[0].start, RamIO,0); | |
228 | if (!boardno) { | |
229 | printk(KERN_INFO "ac.o: PCI Applicom device doesn't have correct signature.\n"); | |
230 | iounmap(RamIO); | |
231 | pci_disable_device(dev); | |
232 | continue; | |
233 | } | |
234 | ||
235 | if (request_irq(dev->irq, &ac_interrupt, SA_SHIRQ, "Applicom PCI", &dummy)) { | |
236 | printk(KERN_INFO "Could not allocate IRQ %d for PCI Applicom device.\n", dev->irq); | |
237 | iounmap(RamIO); | |
238 | pci_disable_device(dev); | |
239 | apbs[boardno - 1].RamIO = NULL; | |
240 | continue; | |
241 | } | |
242 | ||
243 | /* Enable interrupts. */ | |
244 | ||
245 | writeb(0x40, apbs[boardno - 1].RamIO + RAM_IT_FROM_PC); | |
246 | ||
247 | apbs[boardno - 1].irq = dev->irq; | |
248 | } | |
249 | ||
250 | /* Finished with PCI cards. If none registered, | |
251 | * and there was no mem/irq specified, exit */ | |
252 | ||
253 | if (!mem || !irq) { | |
254 | if (numboards) | |
255 | goto fin; | |
256 | else { | |
257 | printk(KERN_INFO "ac.o: No PCI boards found.\n"); | |
258 | printk(KERN_INFO "ac.o: For an ISA board you must supply memory and irq parameters.\n"); | |
259 | return -ENXIO; | |
260 | } | |
261 | } | |
262 | ||
263 | /* Now try the specified ISA cards */ | |
264 | ||
265 | for (i = 0; i < MAX_ISA_BOARD; i++) { | |
266 | RamIO = ioremap(mem + (LEN_RAM_IO * i), LEN_RAM_IO); | |
267 | ||
268 | if (!RamIO) { | |
269 | printk(KERN_INFO "ac.o: Failed to ioremap the ISA card's memory space (slot #%d)\n", i + 1); | |
270 | continue; | |
271 | } | |
272 | ||
273 | if (!(boardno = ac_register_board((unsigned long)mem+ (LEN_RAM_IO*i), | |
274 | RamIO,i+1))) { | |
275 | iounmap(RamIO); | |
276 | continue; | |
277 | } | |
278 | ||
279 | printk(KERN_NOTICE "Applicom ISA card found at mem 0x%lx, irq %d\n", mem + (LEN_RAM_IO*i), irq); | |
280 | ||
281 | if (!numisa) { | |
282 | if (request_irq(irq, &ac_interrupt, SA_SHIRQ, "Applicom ISA", &dummy)) { | |
283 | printk(KERN_WARNING "Could not allocate IRQ %d for ISA Applicom device.\n", irq); | |
284 | iounmap(RamIO); | |
285 | apbs[boardno - 1].RamIO = NULL; | |
286 | } | |
287 | else | |
288 | apbs[boardno - 1].irq = irq; | |
289 | } | |
290 | else | |
291 | apbs[boardno - 1].irq = 0; | |
292 | ||
293 | numisa++; | |
294 | } | |
295 | ||
296 | if (!numisa) | |
819a3eba CL |
297 | printk(KERN_WARNING "ac.o: No valid ISA Applicom boards found " |
298 | "at mem 0x%lx\n", mem); | |
1da177e4 LT |
299 | |
300 | fin: | |
301 | init_waitqueue_head(&FlagSleepRec); | |
302 | ||
303 | WriteErrorCount = 0; | |
304 | ReadErrorCount = 0; | |
305 | DeviceErrorCount = 0; | |
306 | ||
307 | if (numboards) { | |
819a3eba CL |
308 | ret = misc_register(&ac_miscdev); |
309 | if (ret) { | |
310 | printk(KERN_WARNING "ac.o: Unable to register misc device\n"); | |
311 | goto out; | |
312 | } | |
1da177e4 LT |
313 | for (i = 0; i < MAX_BOARD; i++) { |
314 | int serial; | |
315 | char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1]; | |
316 | ||
317 | if (!apbs[i].RamIO) | |
318 | continue; | |
319 | ||
320 | for (serial = 0; serial < SERIAL_NUMBER - TYPE_CARD; serial++) | |
321 | boardname[serial] = readb(apbs[i].RamIO + TYPE_CARD + serial); | |
322 | ||
323 | boardname[serial] = 0; | |
324 | ||
325 | ||
326 | printk(KERN_INFO "Applicom board %d: %s, PROM V%d.%d", | |
327 | i+1, boardname, | |
328 | (int)(readb(apbs[i].RamIO + VERS) >> 4), | |
329 | (int)(readb(apbs[i].RamIO + VERS) & 0xF)); | |
330 | ||
331 | serial = (readb(apbs[i].RamIO + SERIAL_NUMBER) << 16) + | |
332 | (readb(apbs[i].RamIO + SERIAL_NUMBER + 1) << 8) + | |
333 | (readb(apbs[i].RamIO + SERIAL_NUMBER + 2) ); | |
334 | ||
335 | if (serial != 0) | |
336 | printk(" S/N %d\n", serial); | |
337 | else | |
338 | printk("\n"); | |
339 | } | |
340 | return 0; | |
341 | } | |
342 | ||
343 | else | |
344 | return -ENXIO; | |
819a3eba CL |
345 | |
346 | out: | |
347 | for (i = 0; i < MAX_BOARD; i++) { | |
348 | if (!apbs[i].RamIO) | |
349 | continue; | |
350 | if (apbs[i].irq) | |
351 | free_irq(apbs[i].irq, &dummy); | |
352 | iounmap(apbs[i].RamIO); | |
353 | } | |
354 | pci_disable_device(dev); | |
355 | return ret; | |
1da177e4 LT |
356 | } |
357 | ||
358 | ||
359 | #ifndef MODULE | |
360 | __initcall(applicom_init); | |
361 | #endif | |
362 | ||
363 | static ssize_t ac_write(struct file *file, const char __user *buf, size_t count, loff_t * ppos) | |
364 | { | |
365 | unsigned int NumCard; /* Board number 1 -> 8 */ | |
366 | unsigned int IndexCard; /* Index board number 0 -> 7 */ | |
367 | unsigned char TicCard; /* Board TIC to send */ | |
368 | unsigned long flags; /* Current priority */ | |
369 | struct st_ram_io st_loc; | |
370 | struct mailbox tmpmailbox; | |
371 | #ifdef DEBUG | |
372 | int c; | |
373 | #endif | |
374 | DECLARE_WAITQUEUE(wait, current); | |
375 | ||
376 | if (count != sizeof(struct st_ram_io) + sizeof(struct mailbox)) { | |
377 | static int warncount = 5; | |
378 | if (warncount) { | |
379 | printk(KERN_INFO "Hmmm. write() of Applicom card, length %zd != expected %zd\n", | |
380 | count, sizeof(struct st_ram_io) + sizeof(struct mailbox)); | |
381 | warncount--; | |
382 | } | |
383 | return -EINVAL; | |
384 | } | |
385 | ||
386 | if(copy_from_user(&st_loc, buf, sizeof(struct st_ram_io))) | |
387 | return -EFAULT; | |
388 | ||
389 | if(copy_from_user(&tmpmailbox, &buf[sizeof(struct st_ram_io)], | |
390 | sizeof(struct mailbox))) | |
391 | return -EFAULT; | |
392 | ||
393 | NumCard = st_loc.num_card; /* board number to send */ | |
394 | TicCard = st_loc.tic_des_from_pc; /* tic number to send */ | |
395 | IndexCard = NumCard - 1; | |
396 | ||
397 | if((NumCard < 1) || (NumCard > MAX_BOARD) || !apbs[IndexCard].RamIO) | |
398 | return -EINVAL; | |
399 | ||
400 | #ifdef DEBUG | |
401 | printk("Write to applicom card #%d. struct st_ram_io follows:", | |
402 | IndexCard+1); | |
403 | ||
404 | for (c = 0; c < sizeof(struct st_ram_io);) { | |
405 | ||
406 | printk("\n%5.5X: %2.2X", c, ((unsigned char *) &st_loc)[c]); | |
407 | ||
408 | for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) { | |
409 | printk(" %2.2X", ((unsigned char *) &st_loc)[c]); | |
410 | } | |
411 | } | |
412 | ||
413 | printk("\nstruct mailbox follows:"); | |
414 | ||
415 | for (c = 0; c < sizeof(struct mailbox);) { | |
416 | printk("\n%5.5X: %2.2X", c, ((unsigned char *) &tmpmailbox)[c]); | |
417 | ||
418 | for (c++; c % 8 && c < sizeof(struct mailbox); c++) { | |
419 | printk(" %2.2X", ((unsigned char *) &tmpmailbox)[c]); | |
420 | } | |
421 | } | |
422 | ||
423 | printk("\n"); | |
424 | #endif | |
425 | ||
426 | spin_lock_irqsave(&apbs[IndexCard].mutex, flags); | |
427 | ||
428 | /* Test octet ready correct */ | |
429 | if(readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) > 2) { | |
430 | Dummy = readb(apbs[IndexCard].RamIO + VERS); | |
431 | spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags); | |
432 | printk(KERN_WARNING "APPLICOM driver write error board %d, DataFromPcReady = %d\n", | |
433 | IndexCard,(int)readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY)); | |
434 | DeviceErrorCount++; | |
435 | return -EIO; | |
436 | } | |
437 | ||
438 | /* Place ourselves on the wait queue */ | |
439 | set_current_state(TASK_INTERRUPTIBLE); | |
440 | add_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait); | |
441 | ||
442 | /* Check whether the card is ready for us */ | |
443 | while (readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) != 0) { | |
444 | Dummy = readb(apbs[IndexCard].RamIO + VERS); | |
445 | /* It's busy. Sleep. */ | |
446 | ||
447 | spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags); | |
448 | schedule(); | |
449 | if (signal_pending(current)) { | |
450 | remove_wait_queue(&apbs[IndexCard].FlagSleepSend, | |
451 | &wait); | |
452 | return -EINTR; | |
453 | } | |
454 | spin_lock_irqsave(&apbs[IndexCard].mutex, flags); | |
455 | set_current_state(TASK_INTERRUPTIBLE); | |
456 | } | |
457 | ||
458 | /* We may not have actually slept */ | |
459 | set_current_state(TASK_RUNNING); | |
460 | remove_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait); | |
461 | ||
462 | writeb(1, apbs[IndexCard].RamIO + DATA_FROM_PC_READY); | |
463 | ||
464 | /* Which is best - lock down the pages with rawio and then | |
465 | copy directly, or use bounce buffers? For now we do the latter | |
466 | because it works with 2.2 still */ | |
467 | { | |
468 | unsigned char *from = (unsigned char *) &tmpmailbox; | |
469 | void __iomem *to = apbs[IndexCard].RamIO + RAM_FROM_PC; | |
470 | int c; | |
471 | ||
472 | for (c = 0; c < sizeof(struct mailbox); c++) | |
473 | writeb(*(from++), to++); | |
474 | } | |
475 | ||
476 | writeb(0x20, apbs[IndexCard].RamIO + TIC_OWNER_FROM_PC); | |
477 | writeb(0xff, apbs[IndexCard].RamIO + NUMCARD_OWNER_FROM_PC); | |
478 | writeb(TicCard, apbs[IndexCard].RamIO + TIC_DES_FROM_PC); | |
479 | writeb(NumCard, apbs[IndexCard].RamIO + NUMCARD_DES_FROM_PC); | |
480 | writeb(2, apbs[IndexCard].RamIO + DATA_FROM_PC_READY); | |
481 | writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); | |
482 | Dummy = readb(apbs[IndexCard].RamIO + VERS); | |
483 | spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags); | |
484 | return 0; | |
485 | } | |
486 | ||
487 | static int do_ac_read(int IndexCard, char __user *buf, | |
488 | struct st_ram_io *st_loc, struct mailbox *mailbox) | |
489 | { | |
490 | void __iomem *from = apbs[IndexCard].RamIO + RAM_TO_PC; | |
491 | unsigned char *to = (unsigned char *)&mailbox; | |
492 | #ifdef DEBUG | |
493 | int c; | |
494 | #endif | |
495 | ||
496 | st_loc->tic_owner_to_pc = readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC); | |
497 | st_loc->numcard_owner_to_pc = readb(apbs[IndexCard].RamIO + NUMCARD_OWNER_TO_PC); | |
498 | ||
499 | ||
500 | { | |
501 | int c; | |
502 | ||
503 | for (c = 0; c < sizeof(struct mailbox); c++) | |
504 | *(to++) = readb(from++); | |
505 | } | |
506 | writeb(1, apbs[IndexCard].RamIO + ACK_FROM_PC_READY); | |
507 | writeb(1, apbs[IndexCard].RamIO + TYP_ACK_FROM_PC); | |
508 | writeb(IndexCard+1, apbs[IndexCard].RamIO + NUMCARD_ACK_FROM_PC); | |
509 | writeb(readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC), | |
510 | apbs[IndexCard].RamIO + TIC_ACK_FROM_PC); | |
511 | writeb(2, apbs[IndexCard].RamIO + ACK_FROM_PC_READY); | |
512 | writeb(0, apbs[IndexCard].RamIO + DATA_TO_PC_READY); | |
513 | writeb(2, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); | |
514 | Dummy = readb(apbs[IndexCard].RamIO + VERS); | |
515 | ||
516 | #ifdef DEBUG | |
517 | printk("Read from applicom card #%d. struct st_ram_io follows:", NumCard); | |
518 | ||
519 | for (c = 0; c < sizeof(struct st_ram_io);) { | |
520 | printk("\n%5.5X: %2.2X", c, ((unsigned char *)st_loc)[c]); | |
521 | ||
522 | for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) { | |
523 | printk(" %2.2X", ((unsigned char *)st_loc)[c]); | |
524 | } | |
525 | } | |
526 | ||
527 | printk("\nstruct mailbox follows:"); | |
528 | ||
529 | for (c = 0; c < sizeof(struct mailbox);) { | |
530 | printk("\n%5.5X: %2.2X", c, ((unsigned char *)mailbox)[c]); | |
531 | ||
532 | for (c++; c % 8 && c < sizeof(struct mailbox); c++) { | |
533 | printk(" %2.2X", ((unsigned char *)mailbox)[c]); | |
534 | } | |
535 | } | |
536 | printk("\n"); | |
537 | #endif | |
538 | return (sizeof(struct st_ram_io) + sizeof(struct mailbox)); | |
539 | } | |
540 | ||
541 | static ssize_t ac_read (struct file *filp, char __user *buf, size_t count, loff_t *ptr) | |
542 | { | |
543 | unsigned long flags; | |
544 | unsigned int i; | |
545 | unsigned char tmp; | |
546 | int ret = 0; | |
547 | DECLARE_WAITQUEUE(wait, current); | |
548 | #ifdef DEBUG | |
549 | int loopcount=0; | |
550 | #endif | |
551 | /* No need to ratelimit this. Only root can trigger it anyway */ | |
552 | if (count != sizeof(struct st_ram_io) + sizeof(struct mailbox)) { | |
553 | printk( KERN_WARNING "Hmmm. read() of Applicom card, length %zd != expected %zd\n", | |
554 | count,sizeof(struct st_ram_io) + sizeof(struct mailbox)); | |
555 | return -EINVAL; | |
556 | } | |
557 | ||
558 | while(1) { | |
559 | /* Stick ourself on the wait queue */ | |
560 | set_current_state(TASK_INTERRUPTIBLE); | |
561 | add_wait_queue(&FlagSleepRec, &wait); | |
562 | ||
563 | /* Scan each board, looking for one which has a packet for us */ | |
564 | for (i=0; i < MAX_BOARD; i++) { | |
565 | if (!apbs[i].RamIO) | |
566 | continue; | |
567 | spin_lock_irqsave(&apbs[i].mutex, flags); | |
568 | ||
569 | tmp = readb(apbs[i].RamIO + DATA_TO_PC_READY); | |
570 | ||
571 | if (tmp == 2) { | |
572 | struct st_ram_io st_loc; | |
573 | struct mailbox mailbox; | |
574 | ||
575 | /* Got a packet for us */ | |
576 | ret = do_ac_read(i, buf, &st_loc, &mailbox); | |
577 | spin_unlock_irqrestore(&apbs[i].mutex, flags); | |
578 | set_current_state(TASK_RUNNING); | |
579 | remove_wait_queue(&FlagSleepRec, &wait); | |
580 | ||
581 | if (copy_to_user(buf, &st_loc, sizeof(st_loc))) | |
582 | return -EFAULT; | |
583 | if (copy_to_user(buf + sizeof(st_loc), &mailbox, sizeof(mailbox))) | |
584 | return -EFAULT; | |
585 | return tmp; | |
586 | } | |
587 | ||
588 | if (tmp > 2) { | |
589 | /* Got an error */ | |
590 | Dummy = readb(apbs[i].RamIO + VERS); | |
591 | ||
592 | spin_unlock_irqrestore(&apbs[i].mutex, flags); | |
593 | set_current_state(TASK_RUNNING); | |
594 | remove_wait_queue(&FlagSleepRec, &wait); | |
595 | ||
596 | printk(KERN_WARNING "APPLICOM driver read error board %d, DataToPcReady = %d\n", | |
597 | i,(int)readb(apbs[i].RamIO + DATA_TO_PC_READY)); | |
598 | DeviceErrorCount++; | |
599 | return -EIO; | |
600 | } | |
601 | ||
602 | /* Nothing for us. Try the next board */ | |
603 | Dummy = readb(apbs[i].RamIO + VERS); | |
604 | spin_unlock_irqrestore(&apbs[i].mutex, flags); | |
605 | ||
606 | } /* per board */ | |
607 | ||
608 | /* OK - No boards had data for us. Sleep now */ | |
609 | ||
610 | schedule(); | |
611 | remove_wait_queue(&FlagSleepRec, &wait); | |
612 | ||
613 | if (signal_pending(current)) | |
614 | return -EINTR; | |
615 | ||
616 | #ifdef DEBUG | |
617 | if (loopcount++ > 2) { | |
56003191 | 618 | printk(KERN_DEBUG "Looping in ac_read. loopcount %d\n", loopcount); |
1da177e4 LT |
619 | } |
620 | #endif | |
621 | } | |
622 | } | |
623 | ||
624 | static irqreturn_t ac_interrupt(int vec, void *dev_instance, struct pt_regs *regs) | |
625 | { | |
626 | unsigned int i; | |
627 | unsigned int FlagInt; | |
628 | unsigned int LoopCount; | |
629 | int handled = 0; | |
630 | ||
631 | // printk("Applicom interrupt on IRQ %d occurred\n", vec); | |
632 | ||
633 | LoopCount = 0; | |
634 | ||
635 | do { | |
636 | FlagInt = 0; | |
637 | for (i = 0; i < MAX_BOARD; i++) { | |
638 | ||
639 | /* Skip if this board doesn't exist */ | |
640 | if (!apbs[i].RamIO) | |
641 | continue; | |
642 | ||
643 | spin_lock(&apbs[i].mutex); | |
644 | ||
645 | /* Skip if this board doesn't want attention */ | |
646 | if(readb(apbs[i].RamIO + RAM_IT_TO_PC) == 0) { | |
647 | spin_unlock(&apbs[i].mutex); | |
648 | continue; | |
649 | } | |
650 | ||
651 | handled = 1; | |
652 | FlagInt = 1; | |
653 | writeb(0, apbs[i].RamIO + RAM_IT_TO_PC); | |
654 | ||
655 | if (readb(apbs[i].RamIO + DATA_TO_PC_READY) > 2) { | |
656 | printk(KERN_WARNING "APPLICOM driver interrupt err board %d, DataToPcReady = %d\n", | |
657 | i+1,(int)readb(apbs[i].RamIO + DATA_TO_PC_READY)); | |
658 | DeviceErrorCount++; | |
659 | } | |
660 | ||
661 | if((readb(apbs[i].RamIO + DATA_FROM_PC_READY) > 2) && | |
662 | (readb(apbs[i].RamIO + DATA_FROM_PC_READY) != 6)) { | |
663 | ||
664 | printk(KERN_WARNING "APPLICOM driver interrupt err board %d, DataFromPcReady = %d\n", | |
665 | i+1,(int)readb(apbs[i].RamIO + DATA_FROM_PC_READY)); | |
666 | DeviceErrorCount++; | |
667 | } | |
668 | ||
669 | if (readb(apbs[i].RamIO + DATA_TO_PC_READY) == 2) { /* mailbox sent by the card ? */ | |
670 | if (waitqueue_active(&FlagSleepRec)) { | |
671 | wake_up_interruptible(&FlagSleepRec); | |
672 | } | |
673 | } | |
674 | ||
675 | if (readb(apbs[i].RamIO + DATA_FROM_PC_READY) == 0) { /* ram i/o free for write by pc ? */ | |
676 | if (waitqueue_active(&apbs[i].FlagSleepSend)) { /* process sleep during read ? */ | |
677 | wake_up_interruptible(&apbs[i].FlagSleepSend); | |
678 | } | |
679 | } | |
680 | Dummy = readb(apbs[i].RamIO + VERS); | |
681 | ||
682 | if(readb(apbs[i].RamIO + RAM_IT_TO_PC)) { | |
683 | /* There's another int waiting on this card */ | |
684 | spin_unlock(&apbs[i].mutex); | |
685 | i--; | |
686 | } else { | |
687 | spin_unlock(&apbs[i].mutex); | |
688 | } | |
689 | } | |
690 | if (FlagInt) | |
691 | LoopCount = 0; | |
692 | else | |
693 | LoopCount++; | |
694 | } while(LoopCount < 2); | |
695 | return IRQ_RETVAL(handled); | |
696 | } | |
697 | ||
698 | ||
699 | ||
700 | static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) | |
701 | ||
702 | { /* @ ADG ou ATO selon le cas */ | |
703 | int i; | |
704 | unsigned char IndexCard; | |
705 | void __iomem *pmem; | |
706 | int ret = 0; | |
707 | volatile unsigned char byte_reset_it; | |
708 | struct st_ram_io *adgl; | |
709 | void __user *argp = (void __user *)arg; | |
710 | ||
711 | /* In general, the device is only openable by root anyway, so we're not | |
712 | particularly concerned that bogus ioctls can flood the console. */ | |
713 | ||
714 | adgl = kmalloc(sizeof(struct st_ram_io), GFP_KERNEL); | |
715 | if (!adgl) | |
716 | return -ENOMEM; | |
717 | ||
718 | if (copy_from_user(adgl, argp, sizeof(struct st_ram_io))) { | |
719 | kfree(adgl); | |
720 | return -EFAULT; | |
721 | } | |
722 | ||
723 | IndexCard = adgl->num_card-1; | |
724 | ||
725 | if(cmd != 0 && cmd != 6 && | |
726 | ((IndexCard >= MAX_BOARD) || !apbs[IndexCard].RamIO)) { | |
727 | static int warncount = 10; | |
728 | if (warncount) { | |
729 | printk( KERN_WARNING "APPLICOM driver IOCTL, bad board number %d\n",(int)IndexCard+1); | |
730 | warncount--; | |
731 | } | |
732 | kfree(adgl); | |
733 | return -EINVAL; | |
734 | } | |
735 | ||
736 | switch (cmd) { | |
737 | ||
738 | case 0: | |
739 | pmem = apbs[IndexCard].RamIO; | |
740 | for (i = 0; i < sizeof(struct st_ram_io); i++) | |
741 | ((unsigned char *)adgl)[i]=readb(pmem++); | |
742 | if (copy_to_user(argp, adgl, sizeof(struct st_ram_io))) | |
743 | ret = -EFAULT; | |
744 | break; | |
745 | case 1: | |
746 | pmem = apbs[IndexCard].RamIO + CONF_END_TEST; | |
747 | for (i = 0; i < 4; i++) | |
748 | adgl->conf_end_test[i] = readb(pmem++); | |
749 | for (i = 0; i < 2; i++) | |
750 | adgl->error_code[i] = readb(pmem++); | |
751 | for (i = 0; i < 4; i++) | |
752 | adgl->parameter_error[i] = readb(pmem++); | |
753 | pmem = apbs[IndexCard].RamIO + VERS; | |
754 | adgl->vers = readb(pmem); | |
755 | pmem = apbs[IndexCard].RamIO + TYPE_CARD; | |
756 | for (i = 0; i < 20; i++) | |
757 | adgl->reserv1[i] = readb(pmem++); | |
758 | *(int *)&adgl->reserv1[20] = | |
759 | (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER) << 16) + | |
760 | (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER + 1) << 8) + | |
761 | (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER + 2) ); | |
762 | ||
763 | if (copy_to_user(argp, adgl, sizeof(struct st_ram_io))) | |
764 | ret = -EFAULT; | |
765 | break; | |
766 | case 2: | |
767 | pmem = apbs[IndexCard].RamIO + CONF_END_TEST; | |
768 | for (i = 0; i < 10; i++) | |
769 | writeb(0xff, pmem++); | |
770 | writeb(adgl->data_from_pc_ready, | |
771 | apbs[IndexCard].RamIO + DATA_FROM_PC_READY); | |
772 | ||
773 | writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); | |
774 | ||
775 | for (i = 0; i < MAX_BOARD; i++) { | |
776 | if (apbs[i].RamIO) { | |
777 | byte_reset_it = readb(apbs[i].RamIO + RAM_IT_TO_PC); | |
778 | } | |
779 | } | |
780 | break; | |
781 | case 3: | |
782 | pmem = apbs[IndexCard].RamIO + TIC_DES_FROM_PC; | |
783 | writeb(adgl->tic_des_from_pc, pmem); | |
784 | break; | |
785 | case 4: | |
786 | pmem = apbs[IndexCard].RamIO + TIC_OWNER_TO_PC; | |
787 | adgl->tic_owner_to_pc = readb(pmem++); | |
788 | adgl->numcard_owner_to_pc = readb(pmem); | |
789 | if (copy_to_user(argp, adgl,sizeof(struct st_ram_io))) | |
790 | ret = -EFAULT; | |
791 | break; | |
792 | case 5: | |
793 | writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_OWNER_TO_PC); | |
794 | writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_DES_FROM_PC); | |
795 | writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_ACK_FROM_PC); | |
796 | writeb(4, apbs[IndexCard].RamIO + DATA_FROM_PC_READY); | |
797 | writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); | |
798 | break; | |
799 | case 6: | |
800 | printk(KERN_INFO "APPLICOM driver release .... V2.8.0 ($Revision: 1.30 $)\n"); | |
801 | printk(KERN_INFO "Number of installed boards . %d\n", (int) numboards); | |
802 | printk(KERN_INFO "Segment of board ........... %X\n", (int) mem); | |
803 | printk(KERN_INFO "Interrupt IRQ number ....... %d\n", (int) irq); | |
804 | for (i = 0; i < MAX_BOARD; i++) { | |
805 | int serial; | |
806 | char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1]; | |
807 | ||
808 | if (!apbs[i].RamIO) | |
809 | continue; | |
810 | ||
811 | for (serial = 0; serial < SERIAL_NUMBER - TYPE_CARD; serial++) | |
812 | boardname[serial] = readb(apbs[i].RamIO + TYPE_CARD + serial); | |
813 | boardname[serial] = 0; | |
814 | ||
815 | printk(KERN_INFO "Prom version board %d ....... V%d.%d %s", | |
816 | i+1, | |
817 | (int)(readb(apbs[IndexCard].RamIO + VERS) >> 4), | |
818 | (int)(readb(apbs[IndexCard].RamIO + VERS) & 0xF), | |
819 | boardname); | |
820 | ||
821 | ||
822 | serial = (readb(apbs[i].RamIO + SERIAL_NUMBER) << 16) + | |
823 | (readb(apbs[i].RamIO + SERIAL_NUMBER + 1) << 8) + | |
824 | (readb(apbs[i].RamIO + SERIAL_NUMBER + 2) ); | |
825 | ||
826 | if (serial != 0) | |
827 | printk(" S/N %d\n", serial); | |
828 | else | |
829 | printk("\n"); | |
830 | } | |
831 | if (DeviceErrorCount != 0) | |
832 | printk(KERN_INFO "DeviceErrorCount ........... %d\n", DeviceErrorCount); | |
833 | if (ReadErrorCount != 0) | |
834 | printk(KERN_INFO "ReadErrorCount ............. %d\n", ReadErrorCount); | |
835 | if (WriteErrorCount != 0) | |
836 | printk(KERN_INFO "WriteErrorCount ............ %d\n", WriteErrorCount); | |
837 | if (waitqueue_active(&FlagSleepRec)) | |
838 | printk(KERN_INFO "Process in read pending\n"); | |
839 | for (i = 0; i < MAX_BOARD; i++) { | |
840 | if (apbs[i].RamIO && waitqueue_active(&apbs[i].FlagSleepSend)) | |
841 | printk(KERN_INFO "Process in write pending board %d\n",i+1); | |
842 | } | |
843 | break; | |
844 | default: | |
845 | printk(KERN_INFO "APPLICOM driver ioctl, unknown function code %d\n",cmd) ; | |
846 | ret = -EINVAL; | |
847 | break; | |
848 | } | |
849 | Dummy = readb(apbs[IndexCard].RamIO + VERS); | |
850 | kfree(adgl); | |
851 | return 0; | |
852 | } | |
853 | ||
854 | #ifndef MODULE | |
855 | static int __init applicom_setup(char *str) | |
856 | { | |
857 | int ints[4]; | |
858 | ||
859 | (void) get_options(str, 4, ints); | |
860 | ||
861 | if (ints[0] > 2) { | |
862 | printk(KERN_WARNING "Too many arguments to 'applicom=', expected mem,irq only.\n"); | |
863 | } | |
864 | ||
865 | if (ints[0] < 2) { | |
866 | printk(KERN_INFO"applicom numargs: %d\n", ints[0]); | |
867 | return 0; | |
868 | } | |
869 | ||
870 | mem = ints[1]; | |
871 | irq = ints[2]; | |
872 | return 1; | |
873 | } | |
874 | ||
875 | __setup("applicom=", applicom_setup); | |
876 | ||
877 | #endif /* MODULE */ | |
878 |