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