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> | |
d43c36dc | 26 | #include <linux/sched.h> |
1da177e4 LT |
27 | #include <linux/slab.h> |
28 | #include <linux/errno.h> | |
29 | #include <linux/miscdevice.h> | |
30 | #include <linux/pci.h> | |
31 | #include <linux/wait.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/fs.h> | |
34 | ||
35 | #include <asm/io.h> | |
36 | #include <asm/uaccess.h> | |
37 | ||
38 | #include "applicom.h" | |
39 | ||
40 | ||
41 | /* NOTE: We use for loops with {write,read}b() instead of | |
42 | memcpy_{from,to}io throughout this driver. This is because | |
43 | the board doesn't correctly handle word accesses - only | |
44 | bytes. | |
45 | */ | |
46 | ||
47 | ||
48 | #undef DEBUG | |
49 | ||
50 | #define MAX_BOARD 8 /* maximum of pc board possible */ | |
51 | #define MAX_ISA_BOARD 4 | |
52 | #define LEN_RAM_IO 0x800 | |
53 | #define AC_MINOR 157 | |
54 | ||
55 | #ifndef PCI_VENDOR_ID_APPLICOM | |
56 | #define PCI_VENDOR_ID_APPLICOM 0x1389 | |
57 | #define PCI_DEVICE_ID_APPLICOM_PCIGENERIC 0x0001 | |
58 | #define PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN 0x0002 | |
59 | #define PCI_DEVICE_ID_APPLICOM_PCI2000PFB 0x0003 | |
60 | #endif | |
1da177e4 LT |
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[] = { | |
53a7a1bb JS |
69 | { PCI_VDEVICE(APPLICOM, PCI_DEVICE_ID_APPLICOM_PCIGENERIC) }, |
70 | { PCI_VDEVICE(APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN) }, | |
71 | { PCI_VDEVICE(APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000PFB) }, | |
1da177e4 LT |
72 | { 0 } |
73 | }; | |
74 | MODULE_DEVICE_TABLE(pci, applicom_pci_tbl); | |
75 | ||
76 | MODULE_AUTHOR("David Woodhouse & Applicom International"); | |
77 | MODULE_DESCRIPTION("Driver for Applicom Profibus card"); | |
78 | MODULE_LICENSE("GPL"); | |
14f8d3ff | 79 | MODULE_ALIAS_MISCDEV(AC_MINOR); |
1da177e4 LT |
80 | |
81 | MODULE_SUPPORTED_DEVICE("ac"); | |
82 | ||
83 | ||
84 | static struct applicom_board { | |
85 | unsigned long PhysIO; | |
86 | void __iomem *RamIO; | |
87 | wait_queue_head_t FlagSleepSend; | |
88 | long irq; | |
89 | spinlock_t mutex; | |
90 | } apbs[MAX_BOARD]; | |
91 | ||
92 | static unsigned int irq = 0; /* interrupt number IRQ */ | |
93 | static unsigned long mem = 0; /* physical segment of board */ | |
94 | ||
95 | module_param(irq, uint, 0); | |
96 | MODULE_PARM_DESC(irq, "IRQ of the Applicom board"); | |
97 | module_param(mem, ulong, 0); | |
98 | MODULE_PARM_DESC(mem, "Shared Memory Address of Applicom board"); | |
99 | ||
100 | static unsigned int numboards; /* number of installed boards */ | |
101 | static volatile unsigned char Dummy; | |
102 | static DECLARE_WAIT_QUEUE_HEAD(FlagSleepRec); | |
103 | static unsigned int WriteErrorCount; /* number of write error */ | |
104 | static unsigned int ReadErrorCount; /* number of read error */ | |
105 | static unsigned int DeviceErrorCount; /* number of device error */ | |
106 | ||
107 | static ssize_t ac_read (struct file *, char __user *, size_t, loff_t *); | |
108 | static ssize_t ac_write (struct file *, const char __user *, size_t, loff_t *); | |
109 | static int ac_ioctl(struct inode *, struct file *, unsigned int, | |
110 | unsigned long); | |
7d12e780 | 111 | static irqreturn_t ac_interrupt(int, void *); |
1da177e4 | 112 | |
62322d25 | 113 | static const struct file_operations ac_fops = { |
1da177e4 LT |
114 | .owner = THIS_MODULE, |
115 | .llseek = no_llseek, | |
116 | .read = ac_read, | |
117 | .write = ac_write, | |
118 | .ioctl = ac_ioctl, | |
119 | }; | |
120 | ||
121 | static struct miscdevice ac_miscdev = { | |
122 | AC_MINOR, | |
123 | "ac", | |
124 | &ac_fops | |
125 | }; | |
126 | ||
127 | static int dummy; /* dev_id for request_irq() */ | |
128 | ||
129 | static int ac_register_board(unsigned long physloc, void __iomem *loc, | |
130 | unsigned char boardno) | |
131 | { | |
132 | volatile unsigned char byte_reset_it; | |
133 | ||
134 | if((readb(loc + CONF_END_TEST) != 0x00) || | |
135 | (readb(loc + CONF_END_TEST + 1) != 0x55) || | |
136 | (readb(loc + CONF_END_TEST + 2) != 0xAA) || | |
137 | (readb(loc + CONF_END_TEST + 3) != 0xFF)) | |
138 | return 0; | |
139 | ||
140 | if (!boardno) | |
141 | boardno = readb(loc + NUMCARD_OWNER_TO_PC); | |
142 | ||
e60b6e2f | 143 | if (!boardno || boardno > MAX_BOARD) { |
1da177e4 LT |
144 | printk(KERN_WARNING "Board #%d (at 0x%lx) is out of range (1 <= x <= %d).\n", |
145 | boardno, physloc, MAX_BOARD); | |
146 | return 0; | |
147 | } | |
148 | ||
149 | if (apbs[boardno - 1].RamIO) { | |
150 | printk(KERN_WARNING "Board #%d (at 0x%lx) conflicts with previous board #%d (at 0x%lx)\n", | |
151 | boardno, physloc, boardno, apbs[boardno-1].PhysIO); | |
152 | return 0; | |
153 | } | |
154 | ||
155 | boardno--; | |
156 | ||
157 | apbs[boardno].PhysIO = physloc; | |
158 | apbs[boardno].RamIO = loc; | |
159 | init_waitqueue_head(&apbs[boardno].FlagSleepSend); | |
160 | spin_lock_init(&apbs[boardno].mutex); | |
161 | byte_reset_it = readb(loc + RAM_IT_TO_PC); | |
162 | ||
163 | numboards++; | |
164 | return boardno + 1; | |
165 | } | |
166 | ||
2e611390 | 167 | static void __exit applicom_exit(void) |
1da177e4 | 168 | { |
819a3eba | 169 | unsigned int i; |
1da177e4 LT |
170 | |
171 | misc_deregister(&ac_miscdev); | |
172 | ||
173 | for (i = 0; i < MAX_BOARD; i++) { | |
174 | ||
175 | if (!apbs[i].RamIO) | |
176 | continue; | |
177 | ||
178 | if (apbs[i].irq) | |
179 | free_irq(apbs[i].irq, &dummy); | |
180 | ||
181 | iounmap(apbs[i].RamIO); | |
182 | } | |
183 | } | |
184 | ||
2e611390 | 185 | static int __init applicom_init(void) |
1da177e4 LT |
186 | { |
187 | int i, numisa = 0; | |
188 | struct pci_dev *dev = NULL; | |
189 | void __iomem *RamIO; | |
819a3eba | 190 | int boardno, ret; |
1da177e4 LT |
191 | |
192 | printk(KERN_INFO "Applicom driver: $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $\n"); | |
193 | ||
194 | /* No mem and irq given - check for a PCI card */ | |
195 | ||
196 | while ( (dev = pci_get_class(PCI_CLASS_OTHERS << 16, dev))) { | |
197 | ||
53a7a1bb | 198 | if (!pci_match_id(applicom_pci_tbl, dev)) |
1da177e4 LT |
199 | continue; |
200 | ||
201 | if (pci_enable_device(dev)) | |
202 | return -EIO; | |
203 | ||
24cb2335 | 204 | RamIO = ioremap_nocache(pci_resource_start(dev, 0), LEN_RAM_IO); |
1da177e4 LT |
205 | |
206 | if (!RamIO) { | |
e29419ff GKH |
207 | printk(KERN_INFO "ac.o: Failed to ioremap PCI memory " |
208 | "space at 0x%llx\n", | |
55b29a72 | 209 | (unsigned long long)pci_resource_start(dev, 0)); |
1da177e4 LT |
210 | pci_disable_device(dev); |
211 | return -EIO; | |
212 | } | |
213 | ||
e29419ff GKH |
214 | printk(KERN_INFO "Applicom %s found at mem 0x%llx, irq %d\n", |
215 | applicom_pci_devnames[dev->device-1], | |
55b29a72 | 216 | (unsigned long long)pci_resource_start(dev, 0), |
1da177e4 LT |
217 | dev->irq); |
218 | ||
55b29a72 JS |
219 | boardno = ac_register_board(pci_resource_start(dev, 0), |
220 | RamIO, 0); | |
1da177e4 LT |
221 | if (!boardno) { |
222 | printk(KERN_INFO "ac.o: PCI Applicom device doesn't have correct signature.\n"); | |
223 | iounmap(RamIO); | |
224 | pci_disable_device(dev); | |
225 | continue; | |
226 | } | |
227 | ||
0f2ed4c6 | 228 | if (request_irq(dev->irq, &ac_interrupt, IRQF_SHARED, "Applicom PCI", &dummy)) { |
1da177e4 LT |
229 | printk(KERN_INFO "Could not allocate IRQ %d for PCI Applicom device.\n", dev->irq); |
230 | iounmap(RamIO); | |
231 | pci_disable_device(dev); | |
232 | apbs[boardno - 1].RamIO = NULL; | |
233 | continue; | |
234 | } | |
235 | ||
236 | /* Enable interrupts. */ | |
237 | ||
238 | writeb(0x40, apbs[boardno - 1].RamIO + RAM_IT_FROM_PC); | |
239 | ||
240 | apbs[boardno - 1].irq = dev->irq; | |
241 | } | |
242 | ||
243 | /* Finished with PCI cards. If none registered, | |
244 | * and there was no mem/irq specified, exit */ | |
245 | ||
246 | if (!mem || !irq) { | |
247 | if (numboards) | |
248 | goto fin; | |
249 | else { | |
250 | printk(KERN_INFO "ac.o: No PCI boards found.\n"); | |
251 | printk(KERN_INFO "ac.o: For an ISA board you must supply memory and irq parameters.\n"); | |
252 | return -ENXIO; | |
253 | } | |
254 | } | |
255 | ||
256 | /* Now try the specified ISA cards */ | |
257 | ||
258 | for (i = 0; i < MAX_ISA_BOARD; i++) { | |
24cb2335 | 259 | RamIO = ioremap_nocache(mem + (LEN_RAM_IO * i), LEN_RAM_IO); |
1da177e4 LT |
260 | |
261 | if (!RamIO) { | |
262 | printk(KERN_INFO "ac.o: Failed to ioremap the ISA card's memory space (slot #%d)\n", i + 1); | |
263 | continue; | |
264 | } | |
265 | ||
266 | if (!(boardno = ac_register_board((unsigned long)mem+ (LEN_RAM_IO*i), | |
267 | RamIO,i+1))) { | |
268 | iounmap(RamIO); | |
269 | continue; | |
270 | } | |
271 | ||
272 | printk(KERN_NOTICE "Applicom ISA card found at mem 0x%lx, irq %d\n", mem + (LEN_RAM_IO*i), irq); | |
273 | ||
274 | if (!numisa) { | |
0f2ed4c6 | 275 | if (request_irq(irq, &ac_interrupt, IRQF_SHARED, "Applicom ISA", &dummy)) { |
1da177e4 LT |
276 | printk(KERN_WARNING "Could not allocate IRQ %d for ISA Applicom device.\n", irq); |
277 | iounmap(RamIO); | |
278 | apbs[boardno - 1].RamIO = NULL; | |
279 | } | |
280 | else | |
281 | apbs[boardno - 1].irq = irq; | |
282 | } | |
283 | else | |
284 | apbs[boardno - 1].irq = 0; | |
285 | ||
286 | numisa++; | |
287 | } | |
288 | ||
289 | if (!numisa) | |
819a3eba CL |
290 | printk(KERN_WARNING "ac.o: No valid ISA Applicom boards found " |
291 | "at mem 0x%lx\n", mem); | |
1da177e4 LT |
292 | |
293 | fin: | |
294 | init_waitqueue_head(&FlagSleepRec); | |
295 | ||
296 | WriteErrorCount = 0; | |
297 | ReadErrorCount = 0; | |
298 | DeviceErrorCount = 0; | |
299 | ||
300 | if (numboards) { | |
819a3eba CL |
301 | ret = misc_register(&ac_miscdev); |
302 | if (ret) { | |
303 | printk(KERN_WARNING "ac.o: Unable to register misc device\n"); | |
304 | goto out; | |
305 | } | |
1da177e4 LT |
306 | for (i = 0; i < MAX_BOARD; i++) { |
307 | int serial; | |
308 | char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1]; | |
309 | ||
310 | if (!apbs[i].RamIO) | |
311 | continue; | |
312 | ||
313 | for (serial = 0; serial < SERIAL_NUMBER - TYPE_CARD; serial++) | |
314 | boardname[serial] = readb(apbs[i].RamIO + TYPE_CARD + serial); | |
315 | ||
316 | boardname[serial] = 0; | |
317 | ||
318 | ||
319 | printk(KERN_INFO "Applicom board %d: %s, PROM V%d.%d", | |
320 | i+1, boardname, | |
321 | (int)(readb(apbs[i].RamIO + VERS) >> 4), | |
322 | (int)(readb(apbs[i].RamIO + VERS) & 0xF)); | |
323 | ||
324 | serial = (readb(apbs[i].RamIO + SERIAL_NUMBER) << 16) + | |
325 | (readb(apbs[i].RamIO + SERIAL_NUMBER + 1) << 8) + | |
326 | (readb(apbs[i].RamIO + SERIAL_NUMBER + 2) ); | |
327 | ||
328 | if (serial != 0) | |
329 | printk(" S/N %d\n", serial); | |
330 | else | |
331 | printk("\n"); | |
332 | } | |
333 | return 0; | |
334 | } | |
335 | ||
336 | else | |
337 | return -ENXIO; | |
819a3eba CL |
338 | |
339 | out: | |
340 | for (i = 0; i < MAX_BOARD; i++) { | |
341 | if (!apbs[i].RamIO) | |
342 | continue; | |
343 | if (apbs[i].irq) | |
344 | free_irq(apbs[i].irq, &dummy); | |
345 | iounmap(apbs[i].RamIO); | |
346 | } | |
347 | pci_disable_device(dev); | |
348 | return ret; | |
1da177e4 LT |
349 | } |
350 | ||
2e611390 AB |
351 | module_init(applicom_init); |
352 | module_exit(applicom_exit); | |
1da177e4 | 353 | |
1da177e4 LT |
354 | |
355 | static ssize_t ac_write(struct file *file, const char __user *buf, size_t count, loff_t * ppos) | |
356 | { | |
357 | unsigned int NumCard; /* Board number 1 -> 8 */ | |
358 | unsigned int IndexCard; /* Index board number 0 -> 7 */ | |
359 | unsigned char TicCard; /* Board TIC to send */ | |
360 | unsigned long flags; /* Current priority */ | |
361 | struct st_ram_io st_loc; | |
362 | struct mailbox tmpmailbox; | |
363 | #ifdef DEBUG | |
364 | int c; | |
365 | #endif | |
366 | DECLARE_WAITQUEUE(wait, current); | |
367 | ||
368 | if (count != sizeof(struct st_ram_io) + sizeof(struct mailbox)) { | |
369 | static int warncount = 5; | |
370 | if (warncount) { | |
371 | printk(KERN_INFO "Hmmm. write() of Applicom card, length %zd != expected %zd\n", | |
372 | count, sizeof(struct st_ram_io) + sizeof(struct mailbox)); | |
373 | warncount--; | |
374 | } | |
375 | return -EINVAL; | |
376 | } | |
377 | ||
378 | if(copy_from_user(&st_loc, buf, sizeof(struct st_ram_io))) | |
379 | return -EFAULT; | |
380 | ||
381 | if(copy_from_user(&tmpmailbox, &buf[sizeof(struct st_ram_io)], | |
382 | sizeof(struct mailbox))) | |
383 | return -EFAULT; | |
384 | ||
385 | NumCard = st_loc.num_card; /* board number to send */ | |
386 | TicCard = st_loc.tic_des_from_pc; /* tic number to send */ | |
387 | IndexCard = NumCard - 1; | |
388 | ||
389 | if((NumCard < 1) || (NumCard > MAX_BOARD) || !apbs[IndexCard].RamIO) | |
390 | return -EINVAL; | |
391 | ||
392 | #ifdef DEBUG | |
393 | printk("Write to applicom card #%d. struct st_ram_io follows:", | |
394 | IndexCard+1); | |
395 | ||
396 | for (c = 0; c < sizeof(struct st_ram_io);) { | |
397 | ||
398 | printk("\n%5.5X: %2.2X", c, ((unsigned char *) &st_loc)[c]); | |
399 | ||
400 | for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) { | |
401 | printk(" %2.2X", ((unsigned char *) &st_loc)[c]); | |
402 | } | |
403 | } | |
404 | ||
405 | printk("\nstruct mailbox follows:"); | |
406 | ||
407 | for (c = 0; c < sizeof(struct mailbox);) { | |
408 | printk("\n%5.5X: %2.2X", c, ((unsigned char *) &tmpmailbox)[c]); | |
409 | ||
410 | for (c++; c % 8 && c < sizeof(struct mailbox); c++) { | |
411 | printk(" %2.2X", ((unsigned char *) &tmpmailbox)[c]); | |
412 | } | |
413 | } | |
414 | ||
415 | printk("\n"); | |
416 | #endif | |
417 | ||
418 | spin_lock_irqsave(&apbs[IndexCard].mutex, flags); | |
419 | ||
420 | /* Test octet ready correct */ | |
421 | if(readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) > 2) { | |
422 | Dummy = readb(apbs[IndexCard].RamIO + VERS); | |
423 | spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags); | |
424 | printk(KERN_WARNING "APPLICOM driver write error board %d, DataFromPcReady = %d\n", | |
425 | IndexCard,(int)readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY)); | |
426 | DeviceErrorCount++; | |
427 | return -EIO; | |
428 | } | |
429 | ||
430 | /* Place ourselves on the wait queue */ | |
431 | set_current_state(TASK_INTERRUPTIBLE); | |
432 | add_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait); | |
433 | ||
434 | /* Check whether the card is ready for us */ | |
435 | while (readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) != 0) { | |
436 | Dummy = readb(apbs[IndexCard].RamIO + VERS); | |
437 | /* It's busy. Sleep. */ | |
438 | ||
439 | spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags); | |
440 | schedule(); | |
441 | if (signal_pending(current)) { | |
442 | remove_wait_queue(&apbs[IndexCard].FlagSleepSend, | |
443 | &wait); | |
444 | return -EINTR; | |
445 | } | |
446 | spin_lock_irqsave(&apbs[IndexCard].mutex, flags); | |
447 | set_current_state(TASK_INTERRUPTIBLE); | |
448 | } | |
449 | ||
450 | /* We may not have actually slept */ | |
451 | set_current_state(TASK_RUNNING); | |
452 | remove_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait); | |
453 | ||
454 | writeb(1, apbs[IndexCard].RamIO + DATA_FROM_PC_READY); | |
455 | ||
456 | /* Which is best - lock down the pages with rawio and then | |
457 | copy directly, or use bounce buffers? For now we do the latter | |
458 | because it works with 2.2 still */ | |
459 | { | |
460 | unsigned char *from = (unsigned char *) &tmpmailbox; | |
461 | void __iomem *to = apbs[IndexCard].RamIO + RAM_FROM_PC; | |
462 | int c; | |
463 | ||
464 | for (c = 0; c < sizeof(struct mailbox); c++) | |
465 | writeb(*(from++), to++); | |
466 | } | |
467 | ||
468 | writeb(0x20, apbs[IndexCard].RamIO + TIC_OWNER_FROM_PC); | |
469 | writeb(0xff, apbs[IndexCard].RamIO + NUMCARD_OWNER_FROM_PC); | |
470 | writeb(TicCard, apbs[IndexCard].RamIO + TIC_DES_FROM_PC); | |
471 | writeb(NumCard, apbs[IndexCard].RamIO + NUMCARD_DES_FROM_PC); | |
472 | writeb(2, apbs[IndexCard].RamIO + DATA_FROM_PC_READY); | |
473 | writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); | |
474 | Dummy = readb(apbs[IndexCard].RamIO + VERS); | |
475 | spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags); | |
476 | return 0; | |
477 | } | |
478 | ||
479 | static int do_ac_read(int IndexCard, char __user *buf, | |
480 | struct st_ram_io *st_loc, struct mailbox *mailbox) | |
481 | { | |
482 | void __iomem *from = apbs[IndexCard].RamIO + RAM_TO_PC; | |
bc20589b | 483 | unsigned char *to = (unsigned char *)mailbox; |
1da177e4 LT |
484 | #ifdef DEBUG |
485 | int c; | |
486 | #endif | |
487 | ||
488 | st_loc->tic_owner_to_pc = readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC); | |
489 | st_loc->numcard_owner_to_pc = readb(apbs[IndexCard].RamIO + NUMCARD_OWNER_TO_PC); | |
490 | ||
491 | ||
492 | { | |
493 | int c; | |
494 | ||
495 | for (c = 0; c < sizeof(struct mailbox); c++) | |
496 | *(to++) = readb(from++); | |
497 | } | |
498 | writeb(1, apbs[IndexCard].RamIO + ACK_FROM_PC_READY); | |
499 | writeb(1, apbs[IndexCard].RamIO + TYP_ACK_FROM_PC); | |
500 | writeb(IndexCard+1, apbs[IndexCard].RamIO + NUMCARD_ACK_FROM_PC); | |
501 | writeb(readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC), | |
502 | apbs[IndexCard].RamIO + TIC_ACK_FROM_PC); | |
503 | writeb(2, apbs[IndexCard].RamIO + ACK_FROM_PC_READY); | |
504 | writeb(0, apbs[IndexCard].RamIO + DATA_TO_PC_READY); | |
505 | writeb(2, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); | |
506 | Dummy = readb(apbs[IndexCard].RamIO + VERS); | |
507 | ||
508 | #ifdef DEBUG | |
509 | printk("Read from applicom card #%d. struct st_ram_io follows:", NumCard); | |
510 | ||
511 | for (c = 0; c < sizeof(struct st_ram_io);) { | |
512 | printk("\n%5.5X: %2.2X", c, ((unsigned char *)st_loc)[c]); | |
513 | ||
514 | for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) { | |
515 | printk(" %2.2X", ((unsigned char *)st_loc)[c]); | |
516 | } | |
517 | } | |
518 | ||
519 | printk("\nstruct mailbox follows:"); | |
520 | ||
521 | for (c = 0; c < sizeof(struct mailbox);) { | |
522 | printk("\n%5.5X: %2.2X", c, ((unsigned char *)mailbox)[c]); | |
523 | ||
524 | for (c++; c % 8 && c < sizeof(struct mailbox); c++) { | |
525 | printk(" %2.2X", ((unsigned char *)mailbox)[c]); | |
526 | } | |
527 | } | |
528 | printk("\n"); | |
529 | #endif | |
530 | return (sizeof(struct st_ram_io) + sizeof(struct mailbox)); | |
531 | } | |
532 | ||
533 | static ssize_t ac_read (struct file *filp, char __user *buf, size_t count, loff_t *ptr) | |
534 | { | |
535 | unsigned long flags; | |
536 | unsigned int i; | |
537 | unsigned char tmp; | |
538 | int ret = 0; | |
539 | DECLARE_WAITQUEUE(wait, current); | |
540 | #ifdef DEBUG | |
541 | int loopcount=0; | |
542 | #endif | |
543 | /* No need to ratelimit this. Only root can trigger it anyway */ | |
544 | if (count != sizeof(struct st_ram_io) + sizeof(struct mailbox)) { | |
545 | printk( KERN_WARNING "Hmmm. read() of Applicom card, length %zd != expected %zd\n", | |
546 | count,sizeof(struct st_ram_io) + sizeof(struct mailbox)); | |
547 | return -EINVAL; | |
548 | } | |
549 | ||
550 | while(1) { | |
551 | /* Stick ourself on the wait queue */ | |
552 | set_current_state(TASK_INTERRUPTIBLE); | |
553 | add_wait_queue(&FlagSleepRec, &wait); | |
554 | ||
555 | /* Scan each board, looking for one which has a packet for us */ | |
556 | for (i=0; i < MAX_BOARD; i++) { | |
557 | if (!apbs[i].RamIO) | |
558 | continue; | |
559 | spin_lock_irqsave(&apbs[i].mutex, flags); | |
560 | ||
561 | tmp = readb(apbs[i].RamIO + DATA_TO_PC_READY); | |
562 | ||
563 | if (tmp == 2) { | |
564 | struct st_ram_io st_loc; | |
565 | struct mailbox mailbox; | |
566 | ||
567 | /* Got a packet for us */ | |
568 | ret = do_ac_read(i, buf, &st_loc, &mailbox); | |
569 | spin_unlock_irqrestore(&apbs[i].mutex, flags); | |
570 | set_current_state(TASK_RUNNING); | |
571 | remove_wait_queue(&FlagSleepRec, &wait); | |
572 | ||
573 | if (copy_to_user(buf, &st_loc, sizeof(st_loc))) | |
574 | return -EFAULT; | |
575 | if (copy_to_user(buf + sizeof(st_loc), &mailbox, sizeof(mailbox))) | |
576 | return -EFAULT; | |
577 | return tmp; | |
578 | } | |
579 | ||
580 | if (tmp > 2) { | |
581 | /* Got an error */ | |
582 | Dummy = readb(apbs[i].RamIO + VERS); | |
583 | ||
584 | spin_unlock_irqrestore(&apbs[i].mutex, flags); | |
585 | set_current_state(TASK_RUNNING); | |
586 | remove_wait_queue(&FlagSleepRec, &wait); | |
587 | ||
588 | printk(KERN_WARNING "APPLICOM driver read error board %d, DataToPcReady = %d\n", | |
589 | i,(int)readb(apbs[i].RamIO + DATA_TO_PC_READY)); | |
590 | DeviceErrorCount++; | |
591 | return -EIO; | |
592 | } | |
593 | ||
594 | /* Nothing for us. Try the next board */ | |
595 | Dummy = readb(apbs[i].RamIO + VERS); | |
596 | spin_unlock_irqrestore(&apbs[i].mutex, flags); | |
597 | ||
598 | } /* per board */ | |
599 | ||
600 | /* OK - No boards had data for us. Sleep now */ | |
601 | ||
602 | schedule(); | |
603 | remove_wait_queue(&FlagSleepRec, &wait); | |
604 | ||
605 | if (signal_pending(current)) | |
606 | return -EINTR; | |
607 | ||
608 | #ifdef DEBUG | |
609 | if (loopcount++ > 2) { | |
56003191 | 610 | printk(KERN_DEBUG "Looping in ac_read. loopcount %d\n", loopcount); |
1da177e4 LT |
611 | } |
612 | #endif | |
613 | } | |
614 | } | |
615 | ||
7d12e780 | 616 | static irqreturn_t ac_interrupt(int vec, void *dev_instance) |
1da177e4 LT |
617 | { |
618 | unsigned int i; | |
619 | unsigned int FlagInt; | |
620 | unsigned int LoopCount; | |
621 | int handled = 0; | |
622 | ||
623 | // printk("Applicom interrupt on IRQ %d occurred\n", vec); | |
624 | ||
625 | LoopCount = 0; | |
626 | ||
627 | do { | |
628 | FlagInt = 0; | |
629 | for (i = 0; i < MAX_BOARD; i++) { | |
630 | ||
631 | /* Skip if this board doesn't exist */ | |
632 | if (!apbs[i].RamIO) | |
633 | continue; | |
634 | ||
635 | spin_lock(&apbs[i].mutex); | |
636 | ||
637 | /* Skip if this board doesn't want attention */ | |
638 | if(readb(apbs[i].RamIO + RAM_IT_TO_PC) == 0) { | |
639 | spin_unlock(&apbs[i].mutex); | |
640 | continue; | |
641 | } | |
642 | ||
643 | handled = 1; | |
644 | FlagInt = 1; | |
645 | writeb(0, apbs[i].RamIO + RAM_IT_TO_PC); | |
646 | ||
647 | if (readb(apbs[i].RamIO + DATA_TO_PC_READY) > 2) { | |
648 | printk(KERN_WARNING "APPLICOM driver interrupt err board %d, DataToPcReady = %d\n", | |
649 | i+1,(int)readb(apbs[i].RamIO + DATA_TO_PC_READY)); | |
650 | DeviceErrorCount++; | |
651 | } | |
652 | ||
653 | if((readb(apbs[i].RamIO + DATA_FROM_PC_READY) > 2) && | |
654 | (readb(apbs[i].RamIO + DATA_FROM_PC_READY) != 6)) { | |
655 | ||
656 | printk(KERN_WARNING "APPLICOM driver interrupt err board %d, DataFromPcReady = %d\n", | |
657 | i+1,(int)readb(apbs[i].RamIO + DATA_FROM_PC_READY)); | |
658 | DeviceErrorCount++; | |
659 | } | |
660 | ||
661 | if (readb(apbs[i].RamIO + DATA_TO_PC_READY) == 2) { /* mailbox sent by the card ? */ | |
662 | if (waitqueue_active(&FlagSleepRec)) { | |
663 | wake_up_interruptible(&FlagSleepRec); | |
664 | } | |
665 | } | |
666 | ||
667 | if (readb(apbs[i].RamIO + DATA_FROM_PC_READY) == 0) { /* ram i/o free for write by pc ? */ | |
668 | if (waitqueue_active(&apbs[i].FlagSleepSend)) { /* process sleep during read ? */ | |
669 | wake_up_interruptible(&apbs[i].FlagSleepSend); | |
670 | } | |
671 | } | |
672 | Dummy = readb(apbs[i].RamIO + VERS); | |
673 | ||
674 | if(readb(apbs[i].RamIO + RAM_IT_TO_PC)) { | |
675 | /* There's another int waiting on this card */ | |
676 | spin_unlock(&apbs[i].mutex); | |
677 | i--; | |
678 | } else { | |
679 | spin_unlock(&apbs[i].mutex); | |
680 | } | |
681 | } | |
682 | if (FlagInt) | |
683 | LoopCount = 0; | |
684 | else | |
685 | LoopCount++; | |
686 | } while(LoopCount < 2); | |
687 | return IRQ_RETVAL(handled); | |
688 | } | |
689 | ||
690 | ||
691 | ||
692 | static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) | |
693 | ||
694 | { /* @ ADG ou ATO selon le cas */ | |
695 | int i; | |
696 | unsigned char IndexCard; | |
697 | void __iomem *pmem; | |
698 | int ret = 0; | |
699 | volatile unsigned char byte_reset_it; | |
700 | struct st_ram_io *adgl; | |
701 | void __user *argp = (void __user *)arg; | |
702 | ||
703 | /* In general, the device is only openable by root anyway, so we're not | |
704 | particularly concerned that bogus ioctls can flood the console. */ | |
705 | ||
706 | adgl = kmalloc(sizeof(struct st_ram_io), GFP_KERNEL); | |
707 | if (!adgl) | |
708 | return -ENOMEM; | |
709 | ||
710 | if (copy_from_user(adgl, argp, sizeof(struct st_ram_io))) { | |
711 | kfree(adgl); | |
712 | return -EFAULT; | |
713 | } | |
714 | ||
715 | IndexCard = adgl->num_card-1; | |
716 | ||
a7be18d4 | 717 | if(cmd != 6 && ((IndexCard >= MAX_BOARD) || !apbs[IndexCard].RamIO)) { |
1da177e4 LT |
718 | static int warncount = 10; |
719 | if (warncount) { | |
720 | printk( KERN_WARNING "APPLICOM driver IOCTL, bad board number %d\n",(int)IndexCard+1); | |
721 | warncount--; | |
722 | } | |
723 | kfree(adgl); | |
724 | return -EINVAL; | |
725 | } | |
726 | ||
727 | switch (cmd) { | |
728 | ||
729 | case 0: | |
730 | pmem = apbs[IndexCard].RamIO; | |
731 | for (i = 0; i < sizeof(struct st_ram_io); i++) | |
732 | ((unsigned char *)adgl)[i]=readb(pmem++); | |
733 | if (copy_to_user(argp, adgl, sizeof(struct st_ram_io))) | |
734 | ret = -EFAULT; | |
735 | break; | |
736 | case 1: | |
737 | pmem = apbs[IndexCard].RamIO + CONF_END_TEST; | |
738 | for (i = 0; i < 4; i++) | |
739 | adgl->conf_end_test[i] = readb(pmem++); | |
740 | for (i = 0; i < 2; i++) | |
741 | adgl->error_code[i] = readb(pmem++); | |
742 | for (i = 0; i < 4; i++) | |
743 | adgl->parameter_error[i] = readb(pmem++); | |
744 | pmem = apbs[IndexCard].RamIO + VERS; | |
745 | adgl->vers = readb(pmem); | |
746 | pmem = apbs[IndexCard].RamIO + TYPE_CARD; | |
747 | for (i = 0; i < 20; i++) | |
748 | adgl->reserv1[i] = readb(pmem++); | |
749 | *(int *)&adgl->reserv1[20] = | |
750 | (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER) << 16) + | |
751 | (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER + 1) << 8) + | |
752 | (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER + 2) ); | |
753 | ||
754 | if (copy_to_user(argp, adgl, sizeof(struct st_ram_io))) | |
755 | ret = -EFAULT; | |
756 | break; | |
757 | case 2: | |
758 | pmem = apbs[IndexCard].RamIO + CONF_END_TEST; | |
759 | for (i = 0; i < 10; i++) | |
760 | writeb(0xff, pmem++); | |
761 | writeb(adgl->data_from_pc_ready, | |
762 | apbs[IndexCard].RamIO + DATA_FROM_PC_READY); | |
763 | ||
764 | writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); | |
765 | ||
766 | for (i = 0; i < MAX_BOARD; i++) { | |
767 | if (apbs[i].RamIO) { | |
768 | byte_reset_it = readb(apbs[i].RamIO + RAM_IT_TO_PC); | |
769 | } | |
770 | } | |
771 | break; | |
772 | case 3: | |
773 | pmem = apbs[IndexCard].RamIO + TIC_DES_FROM_PC; | |
774 | writeb(adgl->tic_des_from_pc, pmem); | |
775 | break; | |
776 | case 4: | |
777 | pmem = apbs[IndexCard].RamIO + TIC_OWNER_TO_PC; | |
778 | adgl->tic_owner_to_pc = readb(pmem++); | |
779 | adgl->numcard_owner_to_pc = readb(pmem); | |
780 | if (copy_to_user(argp, adgl,sizeof(struct st_ram_io))) | |
781 | ret = -EFAULT; | |
782 | break; | |
783 | case 5: | |
784 | writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_OWNER_TO_PC); | |
785 | writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_DES_FROM_PC); | |
786 | writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_ACK_FROM_PC); | |
787 | writeb(4, apbs[IndexCard].RamIO + DATA_FROM_PC_READY); | |
788 | writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); | |
789 | break; | |
790 | case 6: | |
791 | printk(KERN_INFO "APPLICOM driver release .... V2.8.0 ($Revision: 1.30 $)\n"); | |
792 | printk(KERN_INFO "Number of installed boards . %d\n", (int) numboards); | |
793 | printk(KERN_INFO "Segment of board ........... %X\n", (int) mem); | |
794 | printk(KERN_INFO "Interrupt IRQ number ....... %d\n", (int) irq); | |
795 | for (i = 0; i < MAX_BOARD; i++) { | |
796 | int serial; | |
797 | char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1]; | |
798 | ||
799 | if (!apbs[i].RamIO) | |
800 | continue; | |
801 | ||
802 | for (serial = 0; serial < SERIAL_NUMBER - TYPE_CARD; serial++) | |
803 | boardname[serial] = readb(apbs[i].RamIO + TYPE_CARD + serial); | |
804 | boardname[serial] = 0; | |
805 | ||
806 | printk(KERN_INFO "Prom version board %d ....... V%d.%d %s", | |
807 | i+1, | |
808 | (int)(readb(apbs[IndexCard].RamIO + VERS) >> 4), | |
809 | (int)(readb(apbs[IndexCard].RamIO + VERS) & 0xF), | |
810 | boardname); | |
811 | ||
812 | ||
813 | serial = (readb(apbs[i].RamIO + SERIAL_NUMBER) << 16) + | |
814 | (readb(apbs[i].RamIO + SERIAL_NUMBER + 1) << 8) + | |
815 | (readb(apbs[i].RamIO + SERIAL_NUMBER + 2) ); | |
816 | ||
817 | if (serial != 0) | |
818 | printk(" S/N %d\n", serial); | |
819 | else | |
820 | printk("\n"); | |
821 | } | |
822 | if (DeviceErrorCount != 0) | |
823 | printk(KERN_INFO "DeviceErrorCount ........... %d\n", DeviceErrorCount); | |
824 | if (ReadErrorCount != 0) | |
825 | printk(KERN_INFO "ReadErrorCount ............. %d\n", ReadErrorCount); | |
826 | if (WriteErrorCount != 0) | |
827 | printk(KERN_INFO "WriteErrorCount ............ %d\n", WriteErrorCount); | |
828 | if (waitqueue_active(&FlagSleepRec)) | |
829 | printk(KERN_INFO "Process in read pending\n"); | |
830 | for (i = 0; i < MAX_BOARD; i++) { | |
831 | if (apbs[i].RamIO && waitqueue_active(&apbs[i].FlagSleepSend)) | |
832 | printk(KERN_INFO "Process in write pending board %d\n",i+1); | |
833 | } | |
834 | break; | |
835 | default: | |
a7be18d4 | 836 | ret = -ENOTTY; |
1da177e4 LT |
837 | break; |
838 | } | |
839 | Dummy = readb(apbs[IndexCard].RamIO + VERS); | |
840 | kfree(adgl); | |
841 | return 0; | |
842 | } | |
843 |