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 | |
1da177e4 LT |
60 | |
61 | static char *applicom_pci_devnames[] = { | |
62 | "PCI board", | |
63 | "PCI2000IBS / PCI2000CAN", | |
64 | "PCI2000PFB" | |
65 | }; | |
66 | ||
67 | static struct pci_device_id applicom_pci_tbl[] = { | |
53a7a1bb JS |
68 | { PCI_VDEVICE(APPLICOM, PCI_DEVICE_ID_APPLICOM_PCIGENERIC) }, |
69 | { PCI_VDEVICE(APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN) }, | |
70 | { PCI_VDEVICE(APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000PFB) }, | |
1da177e4 LT |
71 | { 0 } |
72 | }; | |
73 | MODULE_DEVICE_TABLE(pci, applicom_pci_tbl); | |
74 | ||
75 | MODULE_AUTHOR("David Woodhouse & Applicom International"); | |
76 | MODULE_DESCRIPTION("Driver for Applicom Profibus card"); | |
77 | MODULE_LICENSE("GPL"); | |
78 | ||
79 | MODULE_SUPPORTED_DEVICE("ac"); | |
80 | ||
81 | ||
82 | static struct applicom_board { | |
83 | unsigned long PhysIO; | |
84 | void __iomem *RamIO; | |
85 | wait_queue_head_t FlagSleepSend; | |
86 | long irq; | |
87 | spinlock_t mutex; | |
88 | } apbs[MAX_BOARD]; | |
89 | ||
90 | static unsigned int irq = 0; /* interrupt number IRQ */ | |
91 | static unsigned long mem = 0; /* physical segment of board */ | |
92 | ||
93 | module_param(irq, uint, 0); | |
94 | MODULE_PARM_DESC(irq, "IRQ of the Applicom board"); | |
95 | module_param(mem, ulong, 0); | |
96 | MODULE_PARM_DESC(mem, "Shared Memory Address of Applicom board"); | |
97 | ||
98 | static unsigned int numboards; /* number of installed boards */ | |
99 | static volatile unsigned char Dummy; | |
100 | static DECLARE_WAIT_QUEUE_HEAD(FlagSleepRec); | |
101 | static unsigned int WriteErrorCount; /* number of write error */ | |
102 | static unsigned int ReadErrorCount; /* number of read error */ | |
103 | static unsigned int DeviceErrorCount; /* number of device error */ | |
104 | ||
105 | static ssize_t ac_read (struct file *, char __user *, size_t, loff_t *); | |
106 | static ssize_t ac_write (struct file *, const char __user *, size_t, loff_t *); | |
107 | static int ac_ioctl(struct inode *, struct file *, unsigned int, | |
108 | unsigned long); | |
7d12e780 | 109 | static irqreturn_t ac_interrupt(int, void *); |
1da177e4 | 110 | |
62322d25 | 111 | static const struct file_operations ac_fops = { |
1da177e4 LT |
112 | .owner = THIS_MODULE, |
113 | .llseek = no_llseek, | |
114 | .read = ac_read, | |
115 | .write = ac_write, | |
116 | .ioctl = ac_ioctl, | |
117 | }; | |
118 | ||
119 | static struct miscdevice ac_miscdev = { | |
120 | AC_MINOR, | |
121 | "ac", | |
122 | &ac_fops | |
123 | }; | |
124 | ||
125 | static int dummy; /* dev_id for request_irq() */ | |
126 | ||
127 | static int ac_register_board(unsigned long physloc, void __iomem *loc, | |
128 | unsigned char boardno) | |
129 | { | |
130 | volatile unsigned char byte_reset_it; | |
131 | ||
132 | if((readb(loc + CONF_END_TEST) != 0x00) || | |
133 | (readb(loc + CONF_END_TEST + 1) != 0x55) || | |
134 | (readb(loc + CONF_END_TEST + 2) != 0xAA) || | |
135 | (readb(loc + CONF_END_TEST + 3) != 0xFF)) | |
136 | return 0; | |
137 | ||
138 | if (!boardno) | |
139 | boardno = readb(loc + NUMCARD_OWNER_TO_PC); | |
140 | ||
e60b6e2f | 141 | if (!boardno || boardno > MAX_BOARD) { |
1da177e4 LT |
142 | printk(KERN_WARNING "Board #%d (at 0x%lx) is out of range (1 <= x <= %d).\n", |
143 | boardno, physloc, MAX_BOARD); | |
144 | return 0; | |
145 | } | |
146 | ||
147 | if (apbs[boardno - 1].RamIO) { | |
148 | printk(KERN_WARNING "Board #%d (at 0x%lx) conflicts with previous board #%d (at 0x%lx)\n", | |
149 | boardno, physloc, boardno, apbs[boardno-1].PhysIO); | |
150 | return 0; | |
151 | } | |
152 | ||
153 | boardno--; | |
154 | ||
155 | apbs[boardno].PhysIO = physloc; | |
156 | apbs[boardno].RamIO = loc; | |
157 | init_waitqueue_head(&apbs[boardno].FlagSleepSend); | |
158 | spin_lock_init(&apbs[boardno].mutex); | |
159 | byte_reset_it = readb(loc + RAM_IT_TO_PC); | |
160 | ||
161 | numboards++; | |
162 | return boardno + 1; | |
163 | } | |
164 | ||
2e611390 | 165 | static void __exit applicom_exit(void) |
1da177e4 | 166 | { |
819a3eba | 167 | unsigned int i; |
1da177e4 LT |
168 | |
169 | misc_deregister(&ac_miscdev); | |
170 | ||
171 | for (i = 0; i < MAX_BOARD; i++) { | |
172 | ||
173 | if (!apbs[i].RamIO) | |
174 | continue; | |
175 | ||
176 | if (apbs[i].irq) | |
177 | free_irq(apbs[i].irq, &dummy); | |
178 | ||
179 | iounmap(apbs[i].RamIO); | |
180 | } | |
181 | } | |
182 | ||
2e611390 | 183 | static int __init applicom_init(void) |
1da177e4 LT |
184 | { |
185 | int i, numisa = 0; | |
186 | struct pci_dev *dev = NULL; | |
187 | void __iomem *RamIO; | |
819a3eba | 188 | int boardno, ret; |
1da177e4 LT |
189 | |
190 | printk(KERN_INFO "Applicom driver: $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $\n"); | |
191 | ||
192 | /* No mem and irq given - check for a PCI card */ | |
193 | ||
194 | while ( (dev = pci_get_class(PCI_CLASS_OTHERS << 16, dev))) { | |
195 | ||
53a7a1bb | 196 | if (!pci_match_id(applicom_pci_tbl, dev)) |
1da177e4 LT |
197 | continue; |
198 | ||
199 | if (pci_enable_device(dev)) | |
200 | return -EIO; | |
201 | ||
24cb2335 | 202 | RamIO = ioremap_nocache(pci_resource_start(dev, 0), LEN_RAM_IO); |
1da177e4 LT |
203 | |
204 | if (!RamIO) { | |
e29419ff GKH |
205 | printk(KERN_INFO "ac.o: Failed to ioremap PCI memory " |
206 | "space at 0x%llx\n", | |
55b29a72 | 207 | (unsigned long long)pci_resource_start(dev, 0)); |
1da177e4 LT |
208 | pci_disable_device(dev); |
209 | return -EIO; | |
210 | } | |
211 | ||
e29419ff GKH |
212 | printk(KERN_INFO "Applicom %s found at mem 0x%llx, irq %d\n", |
213 | applicom_pci_devnames[dev->device-1], | |
55b29a72 | 214 | (unsigned long long)pci_resource_start(dev, 0), |
1da177e4 LT |
215 | dev->irq); |
216 | ||
55b29a72 JS |
217 | boardno = ac_register_board(pci_resource_start(dev, 0), |
218 | RamIO, 0); | |
1da177e4 LT |
219 | if (!boardno) { |
220 | printk(KERN_INFO "ac.o: PCI Applicom device doesn't have correct signature.\n"); | |
221 | iounmap(RamIO); | |
222 | pci_disable_device(dev); | |
223 | continue; | |
224 | } | |
225 | ||
0f2ed4c6 | 226 | if (request_irq(dev->irq, &ac_interrupt, IRQF_SHARED, "Applicom PCI", &dummy)) { |
1da177e4 LT |
227 | printk(KERN_INFO "Could not allocate IRQ %d for PCI Applicom device.\n", dev->irq); |
228 | iounmap(RamIO); | |
229 | pci_disable_device(dev); | |
230 | apbs[boardno - 1].RamIO = NULL; | |
231 | continue; | |
232 | } | |
233 | ||
234 | /* Enable interrupts. */ | |
235 | ||
236 | writeb(0x40, apbs[boardno - 1].RamIO + RAM_IT_FROM_PC); | |
237 | ||
238 | apbs[boardno - 1].irq = dev->irq; | |
239 | } | |
240 | ||
241 | /* Finished with PCI cards. If none registered, | |
242 | * and there was no mem/irq specified, exit */ | |
243 | ||
244 | if (!mem || !irq) { | |
245 | if (numboards) | |
246 | goto fin; | |
247 | else { | |
248 | printk(KERN_INFO "ac.o: No PCI boards found.\n"); | |
249 | printk(KERN_INFO "ac.o: For an ISA board you must supply memory and irq parameters.\n"); | |
250 | return -ENXIO; | |
251 | } | |
252 | } | |
253 | ||
254 | /* Now try the specified ISA cards */ | |
255 | ||
256 | for (i = 0; i < MAX_ISA_BOARD; i++) { | |
24cb2335 | 257 | RamIO = ioremap_nocache(mem + (LEN_RAM_IO * i), LEN_RAM_IO); |
1da177e4 LT |
258 | |
259 | if (!RamIO) { | |
260 | printk(KERN_INFO "ac.o: Failed to ioremap the ISA card's memory space (slot #%d)\n", i + 1); | |
261 | continue; | |
262 | } | |
263 | ||
264 | if (!(boardno = ac_register_board((unsigned long)mem+ (LEN_RAM_IO*i), | |
265 | RamIO,i+1))) { | |
266 | iounmap(RamIO); | |
267 | continue; | |
268 | } | |
269 | ||
270 | printk(KERN_NOTICE "Applicom ISA card found at mem 0x%lx, irq %d\n", mem + (LEN_RAM_IO*i), irq); | |
271 | ||
272 | if (!numisa) { | |
0f2ed4c6 | 273 | if (request_irq(irq, &ac_interrupt, IRQF_SHARED, "Applicom ISA", &dummy)) { |
1da177e4 LT |
274 | printk(KERN_WARNING "Could not allocate IRQ %d for ISA Applicom device.\n", irq); |
275 | iounmap(RamIO); | |
276 | apbs[boardno - 1].RamIO = NULL; | |
277 | } | |
278 | else | |
279 | apbs[boardno - 1].irq = irq; | |
280 | } | |
281 | else | |
282 | apbs[boardno - 1].irq = 0; | |
283 | ||
284 | numisa++; | |
285 | } | |
286 | ||
287 | if (!numisa) | |
819a3eba CL |
288 | printk(KERN_WARNING "ac.o: No valid ISA Applicom boards found " |
289 | "at mem 0x%lx\n", mem); | |
1da177e4 LT |
290 | |
291 | fin: | |
292 | init_waitqueue_head(&FlagSleepRec); | |
293 | ||
294 | WriteErrorCount = 0; | |
295 | ReadErrorCount = 0; | |
296 | DeviceErrorCount = 0; | |
297 | ||
298 | if (numboards) { | |
819a3eba CL |
299 | ret = misc_register(&ac_miscdev); |
300 | if (ret) { | |
301 | printk(KERN_WARNING "ac.o: Unable to register misc device\n"); | |
302 | goto out; | |
303 | } | |
1da177e4 LT |
304 | for (i = 0; i < MAX_BOARD; i++) { |
305 | int serial; | |
306 | char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1]; | |
307 | ||
308 | if (!apbs[i].RamIO) | |
309 | continue; | |
310 | ||
311 | for (serial = 0; serial < SERIAL_NUMBER - TYPE_CARD; serial++) | |
312 | boardname[serial] = readb(apbs[i].RamIO + TYPE_CARD + serial); | |
313 | ||
314 | boardname[serial] = 0; | |
315 | ||
316 | ||
317 | printk(KERN_INFO "Applicom board %d: %s, PROM V%d.%d", | |
318 | i+1, boardname, | |
319 | (int)(readb(apbs[i].RamIO + VERS) >> 4), | |
320 | (int)(readb(apbs[i].RamIO + VERS) & 0xF)); | |
321 | ||
322 | serial = (readb(apbs[i].RamIO + SERIAL_NUMBER) << 16) + | |
323 | (readb(apbs[i].RamIO + SERIAL_NUMBER + 1) << 8) + | |
324 | (readb(apbs[i].RamIO + SERIAL_NUMBER + 2) ); | |
325 | ||
326 | if (serial != 0) | |
327 | printk(" S/N %d\n", serial); | |
328 | else | |
329 | printk("\n"); | |
330 | } | |
331 | return 0; | |
332 | } | |
333 | ||
334 | else | |
335 | return -ENXIO; | |
819a3eba CL |
336 | |
337 | out: | |
338 | for (i = 0; i < MAX_BOARD; i++) { | |
339 | if (!apbs[i].RamIO) | |
340 | continue; | |
341 | if (apbs[i].irq) | |
342 | free_irq(apbs[i].irq, &dummy); | |
343 | iounmap(apbs[i].RamIO); | |
344 | } | |
345 | pci_disable_device(dev); | |
346 | return ret; | |
1da177e4 LT |
347 | } |
348 | ||
2e611390 AB |
349 | module_init(applicom_init); |
350 | module_exit(applicom_exit); | |
1da177e4 | 351 | |
1da177e4 LT |
352 | |
353 | static ssize_t ac_write(struct file *file, const char __user *buf, size_t count, loff_t * ppos) | |
354 | { | |
355 | unsigned int NumCard; /* Board number 1 -> 8 */ | |
356 | unsigned int IndexCard; /* Index board number 0 -> 7 */ | |
357 | unsigned char TicCard; /* Board TIC to send */ | |
358 | unsigned long flags; /* Current priority */ | |
359 | struct st_ram_io st_loc; | |
360 | struct mailbox tmpmailbox; | |
361 | #ifdef DEBUG | |
362 | int c; | |
363 | #endif | |
364 | DECLARE_WAITQUEUE(wait, current); | |
365 | ||
366 | if (count != sizeof(struct st_ram_io) + sizeof(struct mailbox)) { | |
367 | static int warncount = 5; | |
368 | if (warncount) { | |
369 | printk(KERN_INFO "Hmmm. write() of Applicom card, length %zd != expected %zd\n", | |
370 | count, sizeof(struct st_ram_io) + sizeof(struct mailbox)); | |
371 | warncount--; | |
372 | } | |
373 | return -EINVAL; | |
374 | } | |
375 | ||
376 | if(copy_from_user(&st_loc, buf, sizeof(struct st_ram_io))) | |
377 | return -EFAULT; | |
378 | ||
379 | if(copy_from_user(&tmpmailbox, &buf[sizeof(struct st_ram_io)], | |
380 | sizeof(struct mailbox))) | |
381 | return -EFAULT; | |
382 | ||
383 | NumCard = st_loc.num_card; /* board number to send */ | |
384 | TicCard = st_loc.tic_des_from_pc; /* tic number to send */ | |
385 | IndexCard = NumCard - 1; | |
386 | ||
387 | if((NumCard < 1) || (NumCard > MAX_BOARD) || !apbs[IndexCard].RamIO) | |
388 | return -EINVAL; | |
389 | ||
390 | #ifdef DEBUG | |
391 | printk("Write to applicom card #%d. struct st_ram_io follows:", | |
392 | IndexCard+1); | |
393 | ||
394 | for (c = 0; c < sizeof(struct st_ram_io);) { | |
395 | ||
396 | printk("\n%5.5X: %2.2X", c, ((unsigned char *) &st_loc)[c]); | |
397 | ||
398 | for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) { | |
399 | printk(" %2.2X", ((unsigned char *) &st_loc)[c]); | |
400 | } | |
401 | } | |
402 | ||
403 | printk("\nstruct mailbox follows:"); | |
404 | ||
405 | for (c = 0; c < sizeof(struct mailbox);) { | |
406 | printk("\n%5.5X: %2.2X", c, ((unsigned char *) &tmpmailbox)[c]); | |
407 | ||
408 | for (c++; c % 8 && c < sizeof(struct mailbox); c++) { | |
409 | printk(" %2.2X", ((unsigned char *) &tmpmailbox)[c]); | |
410 | } | |
411 | } | |
412 | ||
413 | printk("\n"); | |
414 | #endif | |
415 | ||
416 | spin_lock_irqsave(&apbs[IndexCard].mutex, flags); | |
417 | ||
418 | /* Test octet ready correct */ | |
419 | if(readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) > 2) { | |
420 | Dummy = readb(apbs[IndexCard].RamIO + VERS); | |
421 | spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags); | |
422 | printk(KERN_WARNING "APPLICOM driver write error board %d, DataFromPcReady = %d\n", | |
423 | IndexCard,(int)readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY)); | |
424 | DeviceErrorCount++; | |
425 | return -EIO; | |
426 | } | |
427 | ||
428 | /* Place ourselves on the wait queue */ | |
429 | set_current_state(TASK_INTERRUPTIBLE); | |
430 | add_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait); | |
431 | ||
432 | /* Check whether the card is ready for us */ | |
433 | while (readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) != 0) { | |
434 | Dummy = readb(apbs[IndexCard].RamIO + VERS); | |
435 | /* It's busy. Sleep. */ | |
436 | ||
437 | spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags); | |
438 | schedule(); | |
439 | if (signal_pending(current)) { | |
440 | remove_wait_queue(&apbs[IndexCard].FlagSleepSend, | |
441 | &wait); | |
442 | return -EINTR; | |
443 | } | |
444 | spin_lock_irqsave(&apbs[IndexCard].mutex, flags); | |
445 | set_current_state(TASK_INTERRUPTIBLE); | |
446 | } | |
447 | ||
448 | /* We may not have actually slept */ | |
449 | set_current_state(TASK_RUNNING); | |
450 | remove_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait); | |
451 | ||
452 | writeb(1, apbs[IndexCard].RamIO + DATA_FROM_PC_READY); | |
453 | ||
454 | /* Which is best - lock down the pages with rawio and then | |
455 | copy directly, or use bounce buffers? For now we do the latter | |
456 | because it works with 2.2 still */ | |
457 | { | |
458 | unsigned char *from = (unsigned char *) &tmpmailbox; | |
459 | void __iomem *to = apbs[IndexCard].RamIO + RAM_FROM_PC; | |
460 | int c; | |
461 | ||
462 | for (c = 0; c < sizeof(struct mailbox); c++) | |
463 | writeb(*(from++), to++); | |
464 | } | |
465 | ||
466 | writeb(0x20, apbs[IndexCard].RamIO + TIC_OWNER_FROM_PC); | |
467 | writeb(0xff, apbs[IndexCard].RamIO + NUMCARD_OWNER_FROM_PC); | |
468 | writeb(TicCard, apbs[IndexCard].RamIO + TIC_DES_FROM_PC); | |
469 | writeb(NumCard, apbs[IndexCard].RamIO + NUMCARD_DES_FROM_PC); | |
470 | writeb(2, apbs[IndexCard].RamIO + DATA_FROM_PC_READY); | |
471 | writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); | |
472 | Dummy = readb(apbs[IndexCard].RamIO + VERS); | |
473 | spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags); | |
474 | return 0; | |
475 | } | |
476 | ||
477 | static int do_ac_read(int IndexCard, char __user *buf, | |
478 | struct st_ram_io *st_loc, struct mailbox *mailbox) | |
479 | { | |
480 | void __iomem *from = apbs[IndexCard].RamIO + RAM_TO_PC; | |
bc20589b | 481 | unsigned char *to = (unsigned char *)mailbox; |
1da177e4 LT |
482 | #ifdef DEBUG |
483 | int c; | |
484 | #endif | |
485 | ||
486 | st_loc->tic_owner_to_pc = readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC); | |
487 | st_loc->numcard_owner_to_pc = readb(apbs[IndexCard].RamIO + NUMCARD_OWNER_TO_PC); | |
488 | ||
489 | ||
490 | { | |
491 | int c; | |
492 | ||
493 | for (c = 0; c < sizeof(struct mailbox); c++) | |
494 | *(to++) = readb(from++); | |
495 | } | |
496 | writeb(1, apbs[IndexCard].RamIO + ACK_FROM_PC_READY); | |
497 | writeb(1, apbs[IndexCard].RamIO + TYP_ACK_FROM_PC); | |
498 | writeb(IndexCard+1, apbs[IndexCard].RamIO + NUMCARD_ACK_FROM_PC); | |
499 | writeb(readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC), | |
500 | apbs[IndexCard].RamIO + TIC_ACK_FROM_PC); | |
501 | writeb(2, apbs[IndexCard].RamIO + ACK_FROM_PC_READY); | |
502 | writeb(0, apbs[IndexCard].RamIO + DATA_TO_PC_READY); | |
503 | writeb(2, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); | |
504 | Dummy = readb(apbs[IndexCard].RamIO + VERS); | |
505 | ||
506 | #ifdef DEBUG | |
507 | printk("Read from applicom card #%d. struct st_ram_io follows:", NumCard); | |
508 | ||
509 | for (c = 0; c < sizeof(struct st_ram_io);) { | |
510 | printk("\n%5.5X: %2.2X", c, ((unsigned char *)st_loc)[c]); | |
511 | ||
512 | for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) { | |
513 | printk(" %2.2X", ((unsigned char *)st_loc)[c]); | |
514 | } | |
515 | } | |
516 | ||
517 | printk("\nstruct mailbox follows:"); | |
518 | ||
519 | for (c = 0; c < sizeof(struct mailbox);) { | |
520 | printk("\n%5.5X: %2.2X", c, ((unsigned char *)mailbox)[c]); | |
521 | ||
522 | for (c++; c % 8 && c < sizeof(struct mailbox); c++) { | |
523 | printk(" %2.2X", ((unsigned char *)mailbox)[c]); | |
524 | } | |
525 | } | |
526 | printk("\n"); | |
527 | #endif | |
528 | return (sizeof(struct st_ram_io) + sizeof(struct mailbox)); | |
529 | } | |
530 | ||
531 | static ssize_t ac_read (struct file *filp, char __user *buf, size_t count, loff_t *ptr) | |
532 | { | |
533 | unsigned long flags; | |
534 | unsigned int i; | |
535 | unsigned char tmp; | |
536 | int ret = 0; | |
537 | DECLARE_WAITQUEUE(wait, current); | |
538 | #ifdef DEBUG | |
539 | int loopcount=0; | |
540 | #endif | |
541 | /* No need to ratelimit this. Only root can trigger it anyway */ | |
542 | if (count != sizeof(struct st_ram_io) + sizeof(struct mailbox)) { | |
543 | printk( KERN_WARNING "Hmmm. read() of Applicom card, length %zd != expected %zd\n", | |
544 | count,sizeof(struct st_ram_io) + sizeof(struct mailbox)); | |
545 | return -EINVAL; | |
546 | } | |
547 | ||
548 | while(1) { | |
549 | /* Stick ourself on the wait queue */ | |
550 | set_current_state(TASK_INTERRUPTIBLE); | |
551 | add_wait_queue(&FlagSleepRec, &wait); | |
552 | ||
553 | /* Scan each board, looking for one which has a packet for us */ | |
554 | for (i=0; i < MAX_BOARD; i++) { | |
555 | if (!apbs[i].RamIO) | |
556 | continue; | |
557 | spin_lock_irqsave(&apbs[i].mutex, flags); | |
558 | ||
559 | tmp = readb(apbs[i].RamIO + DATA_TO_PC_READY); | |
560 | ||
561 | if (tmp == 2) { | |
562 | struct st_ram_io st_loc; | |
563 | struct mailbox mailbox; | |
564 | ||
565 | /* Got a packet for us */ | |
566 | ret = do_ac_read(i, buf, &st_loc, &mailbox); | |
567 | spin_unlock_irqrestore(&apbs[i].mutex, flags); | |
568 | set_current_state(TASK_RUNNING); | |
569 | remove_wait_queue(&FlagSleepRec, &wait); | |
570 | ||
571 | if (copy_to_user(buf, &st_loc, sizeof(st_loc))) | |
572 | return -EFAULT; | |
573 | if (copy_to_user(buf + sizeof(st_loc), &mailbox, sizeof(mailbox))) | |
574 | return -EFAULT; | |
575 | return tmp; | |
576 | } | |
577 | ||
578 | if (tmp > 2) { | |
579 | /* Got an error */ | |
580 | Dummy = readb(apbs[i].RamIO + VERS); | |
581 | ||
582 | spin_unlock_irqrestore(&apbs[i].mutex, flags); | |
583 | set_current_state(TASK_RUNNING); | |
584 | remove_wait_queue(&FlagSleepRec, &wait); | |
585 | ||
586 | printk(KERN_WARNING "APPLICOM driver read error board %d, DataToPcReady = %d\n", | |
587 | i,(int)readb(apbs[i].RamIO + DATA_TO_PC_READY)); | |
588 | DeviceErrorCount++; | |
589 | return -EIO; | |
590 | } | |
591 | ||
592 | /* Nothing for us. Try the next board */ | |
593 | Dummy = readb(apbs[i].RamIO + VERS); | |
594 | spin_unlock_irqrestore(&apbs[i].mutex, flags); | |
595 | ||
596 | } /* per board */ | |
597 | ||
598 | /* OK - No boards had data for us. Sleep now */ | |
599 | ||
600 | schedule(); | |
601 | remove_wait_queue(&FlagSleepRec, &wait); | |
602 | ||
603 | if (signal_pending(current)) | |
604 | return -EINTR; | |
605 | ||
606 | #ifdef DEBUG | |
607 | if (loopcount++ > 2) { | |
56003191 | 608 | printk(KERN_DEBUG "Looping in ac_read. loopcount %d\n", loopcount); |
1da177e4 LT |
609 | } |
610 | #endif | |
611 | } | |
612 | } | |
613 | ||
7d12e780 | 614 | static irqreturn_t ac_interrupt(int vec, void *dev_instance) |
1da177e4 LT |
615 | { |
616 | unsigned int i; | |
617 | unsigned int FlagInt; | |
618 | unsigned int LoopCount; | |
619 | int handled = 0; | |
620 | ||
621 | // printk("Applicom interrupt on IRQ %d occurred\n", vec); | |
622 | ||
623 | LoopCount = 0; | |
624 | ||
625 | do { | |
626 | FlagInt = 0; | |
627 | for (i = 0; i < MAX_BOARD; i++) { | |
628 | ||
629 | /* Skip if this board doesn't exist */ | |
630 | if (!apbs[i].RamIO) | |
631 | continue; | |
632 | ||
633 | spin_lock(&apbs[i].mutex); | |
634 | ||
635 | /* Skip if this board doesn't want attention */ | |
636 | if(readb(apbs[i].RamIO + RAM_IT_TO_PC) == 0) { | |
637 | spin_unlock(&apbs[i].mutex); | |
638 | continue; | |
639 | } | |
640 | ||
641 | handled = 1; | |
642 | FlagInt = 1; | |
643 | writeb(0, apbs[i].RamIO + RAM_IT_TO_PC); | |
644 | ||
645 | if (readb(apbs[i].RamIO + DATA_TO_PC_READY) > 2) { | |
646 | printk(KERN_WARNING "APPLICOM driver interrupt err board %d, DataToPcReady = %d\n", | |
647 | i+1,(int)readb(apbs[i].RamIO + DATA_TO_PC_READY)); | |
648 | DeviceErrorCount++; | |
649 | } | |
650 | ||
651 | if((readb(apbs[i].RamIO + DATA_FROM_PC_READY) > 2) && | |
652 | (readb(apbs[i].RamIO + DATA_FROM_PC_READY) != 6)) { | |
653 | ||
654 | printk(KERN_WARNING "APPLICOM driver interrupt err board %d, DataFromPcReady = %d\n", | |
655 | i+1,(int)readb(apbs[i].RamIO + DATA_FROM_PC_READY)); | |
656 | DeviceErrorCount++; | |
657 | } | |
658 | ||
659 | if (readb(apbs[i].RamIO + DATA_TO_PC_READY) == 2) { /* mailbox sent by the card ? */ | |
660 | if (waitqueue_active(&FlagSleepRec)) { | |
661 | wake_up_interruptible(&FlagSleepRec); | |
662 | } | |
663 | } | |
664 | ||
665 | if (readb(apbs[i].RamIO + DATA_FROM_PC_READY) == 0) { /* ram i/o free for write by pc ? */ | |
666 | if (waitqueue_active(&apbs[i].FlagSleepSend)) { /* process sleep during read ? */ | |
667 | wake_up_interruptible(&apbs[i].FlagSleepSend); | |
668 | } | |
669 | } | |
670 | Dummy = readb(apbs[i].RamIO + VERS); | |
671 | ||
672 | if(readb(apbs[i].RamIO + RAM_IT_TO_PC)) { | |
673 | /* There's another int waiting on this card */ | |
674 | spin_unlock(&apbs[i].mutex); | |
675 | i--; | |
676 | } else { | |
677 | spin_unlock(&apbs[i].mutex); | |
678 | } | |
679 | } | |
680 | if (FlagInt) | |
681 | LoopCount = 0; | |
682 | else | |
683 | LoopCount++; | |
684 | } while(LoopCount < 2); | |
685 | return IRQ_RETVAL(handled); | |
686 | } | |
687 | ||
688 | ||
689 | ||
690 | static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) | |
691 | ||
692 | { /* @ ADG ou ATO selon le cas */ | |
693 | int i; | |
694 | unsigned char IndexCard; | |
695 | void __iomem *pmem; | |
696 | int ret = 0; | |
697 | volatile unsigned char byte_reset_it; | |
698 | struct st_ram_io *adgl; | |
699 | void __user *argp = (void __user *)arg; | |
700 | ||
701 | /* In general, the device is only openable by root anyway, so we're not | |
702 | particularly concerned that bogus ioctls can flood the console. */ | |
703 | ||
704 | adgl = kmalloc(sizeof(struct st_ram_io), GFP_KERNEL); | |
705 | if (!adgl) | |
706 | return -ENOMEM; | |
707 | ||
708 | if (copy_from_user(adgl, argp, sizeof(struct st_ram_io))) { | |
709 | kfree(adgl); | |
710 | return -EFAULT; | |
711 | } | |
712 | ||
713 | IndexCard = adgl->num_card-1; | |
714 | ||
a7be18d4 | 715 | if(cmd != 6 && ((IndexCard >= MAX_BOARD) || !apbs[IndexCard].RamIO)) { |
1da177e4 LT |
716 | static int warncount = 10; |
717 | if (warncount) { | |
718 | printk( KERN_WARNING "APPLICOM driver IOCTL, bad board number %d\n",(int)IndexCard+1); | |
719 | warncount--; | |
720 | } | |
721 | kfree(adgl); | |
722 | return -EINVAL; | |
723 | } | |
724 | ||
725 | switch (cmd) { | |
726 | ||
727 | case 0: | |
728 | pmem = apbs[IndexCard].RamIO; | |
729 | for (i = 0; i < sizeof(struct st_ram_io); i++) | |
730 | ((unsigned char *)adgl)[i]=readb(pmem++); | |
731 | if (copy_to_user(argp, adgl, sizeof(struct st_ram_io))) | |
732 | ret = -EFAULT; | |
733 | break; | |
734 | case 1: | |
735 | pmem = apbs[IndexCard].RamIO + CONF_END_TEST; | |
736 | for (i = 0; i < 4; i++) | |
737 | adgl->conf_end_test[i] = readb(pmem++); | |
738 | for (i = 0; i < 2; i++) | |
739 | adgl->error_code[i] = readb(pmem++); | |
740 | for (i = 0; i < 4; i++) | |
741 | adgl->parameter_error[i] = readb(pmem++); | |
742 | pmem = apbs[IndexCard].RamIO + VERS; | |
743 | adgl->vers = readb(pmem); | |
744 | pmem = apbs[IndexCard].RamIO + TYPE_CARD; | |
745 | for (i = 0; i < 20; i++) | |
746 | adgl->reserv1[i] = readb(pmem++); | |
747 | *(int *)&adgl->reserv1[20] = | |
748 | (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER) << 16) + | |
749 | (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER + 1) << 8) + | |
750 | (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER + 2) ); | |
751 | ||
752 | if (copy_to_user(argp, adgl, sizeof(struct st_ram_io))) | |
753 | ret = -EFAULT; | |
754 | break; | |
755 | case 2: | |
756 | pmem = apbs[IndexCard].RamIO + CONF_END_TEST; | |
757 | for (i = 0; i < 10; i++) | |
758 | writeb(0xff, pmem++); | |
759 | writeb(adgl->data_from_pc_ready, | |
760 | apbs[IndexCard].RamIO + DATA_FROM_PC_READY); | |
761 | ||
762 | writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); | |
763 | ||
764 | for (i = 0; i < MAX_BOARD; i++) { | |
765 | if (apbs[i].RamIO) { | |
766 | byte_reset_it = readb(apbs[i].RamIO + RAM_IT_TO_PC); | |
767 | } | |
768 | } | |
769 | break; | |
770 | case 3: | |
771 | pmem = apbs[IndexCard].RamIO + TIC_DES_FROM_PC; | |
772 | writeb(adgl->tic_des_from_pc, pmem); | |
773 | break; | |
774 | case 4: | |
775 | pmem = apbs[IndexCard].RamIO + TIC_OWNER_TO_PC; | |
776 | adgl->tic_owner_to_pc = readb(pmem++); | |
777 | adgl->numcard_owner_to_pc = readb(pmem); | |
778 | if (copy_to_user(argp, adgl,sizeof(struct st_ram_io))) | |
779 | ret = -EFAULT; | |
780 | break; | |
781 | case 5: | |
782 | writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_OWNER_TO_PC); | |
783 | writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_DES_FROM_PC); | |
784 | writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_ACK_FROM_PC); | |
785 | writeb(4, apbs[IndexCard].RamIO + DATA_FROM_PC_READY); | |
786 | writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); | |
787 | break; | |
788 | case 6: | |
789 | printk(KERN_INFO "APPLICOM driver release .... V2.8.0 ($Revision: 1.30 $)\n"); | |
790 | printk(KERN_INFO "Number of installed boards . %d\n", (int) numboards); | |
791 | printk(KERN_INFO "Segment of board ........... %X\n", (int) mem); | |
792 | printk(KERN_INFO "Interrupt IRQ number ....... %d\n", (int) irq); | |
793 | for (i = 0; i < MAX_BOARD; i++) { | |
794 | int serial; | |
795 | char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1]; | |
796 | ||
797 | if (!apbs[i].RamIO) | |
798 | continue; | |
799 | ||
800 | for (serial = 0; serial < SERIAL_NUMBER - TYPE_CARD; serial++) | |
801 | boardname[serial] = readb(apbs[i].RamIO + TYPE_CARD + serial); | |
802 | boardname[serial] = 0; | |
803 | ||
804 | printk(KERN_INFO "Prom version board %d ....... V%d.%d %s", | |
805 | i+1, | |
806 | (int)(readb(apbs[IndexCard].RamIO + VERS) >> 4), | |
807 | (int)(readb(apbs[IndexCard].RamIO + VERS) & 0xF), | |
808 | boardname); | |
809 | ||
810 | ||
811 | serial = (readb(apbs[i].RamIO + SERIAL_NUMBER) << 16) + | |
812 | (readb(apbs[i].RamIO + SERIAL_NUMBER + 1) << 8) + | |
813 | (readb(apbs[i].RamIO + SERIAL_NUMBER + 2) ); | |
814 | ||
815 | if (serial != 0) | |
816 | printk(" S/N %d\n", serial); | |
817 | else | |
818 | printk("\n"); | |
819 | } | |
820 | if (DeviceErrorCount != 0) | |
821 | printk(KERN_INFO "DeviceErrorCount ........... %d\n", DeviceErrorCount); | |
822 | if (ReadErrorCount != 0) | |
823 | printk(KERN_INFO "ReadErrorCount ............. %d\n", ReadErrorCount); | |
824 | if (WriteErrorCount != 0) | |
825 | printk(KERN_INFO "WriteErrorCount ............ %d\n", WriteErrorCount); | |
826 | if (waitqueue_active(&FlagSleepRec)) | |
827 | printk(KERN_INFO "Process in read pending\n"); | |
828 | for (i = 0; i < MAX_BOARD; i++) { | |
829 | if (apbs[i].RamIO && waitqueue_active(&apbs[i].FlagSleepSend)) | |
830 | printk(KERN_INFO "Process in write pending board %d\n",i+1); | |
831 | } | |
832 | break; | |
833 | default: | |
a7be18d4 | 834 | ret = -ENOTTY; |
1da177e4 LT |
835 | break; |
836 | } | |
837 | Dummy = readb(apbs[IndexCard].RamIO + VERS); | |
838 | kfree(adgl); | |
839 | return 0; | |
840 | } | |
841 |