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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * This program is free software; you can redistribute it and/or | |
3 | * modify it under the terms of the GNU General Public License | |
4 | * as published by the Free Software Foundation; either version | |
5 | * 2 of the License, or (at your option) any later version. | |
6 | * | |
7 | * Original driver code supplied by Multi-Tech | |
8 | * | |
9 | * Changes | |
10 | * 1/9/98 alan@redhat.com Merge to 2.0.x kernel tree | |
11 | * Obtain and use official major/minors | |
12 | * Loader switched to a misc device | |
13 | * (fixed range check bug as a side effect) | |
14 | * Printk clean up | |
15 | * 9/12/98 alan@redhat.com Rough port to 2.1.x | |
16 | * | |
17 | * 10/6/99 sameer Merged the ISA and PCI drivers to | |
18 | * a new unified driver. | |
19 | * | |
20 | * 3/9/99 sameer Added support for ISI4616 cards. | |
21 | * | |
22 | * 16/9/99 sameer We do not force RTS low anymore. | |
d8d16e47 | 23 | * This is to prevent the firmware |
1da177e4 LT |
24 | * from getting confused. |
25 | * | |
26 | * 26/10/99 sameer Cosmetic changes:The driver now | |
27 | * dumps the Port Count information | |
28 | * along with I/O address and IRQ. | |
29 | * | |
30 | * 13/12/99 sameer Fixed the problem with IRQ sharing. | |
31 | * | |
32 | * 10/5/00 sameer Fixed isicom_shutdown_board() | |
33 | * to not lower DTR on all the ports | |
d8d16e47 | 34 | * when the last port on the card is |
1da177e4 LT |
35 | * closed. |
36 | * | |
37 | * 10/5/00 sameer Signal mask setup command added | |
d8d16e47 | 38 | * to isicom_setup_port and |
1da177e4 LT |
39 | * isicom_shutdown_port. |
40 | * | |
41 | * 24/5/00 sameer The driver is now SMP aware. | |
d8d16e47 JS |
42 | * |
43 | * | |
1da177e4 | 44 | * 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem |
d8d16e47 JS |
45 | * |
46 | * | |
1da177e4 LT |
47 | * 03/01/01 anil .s Added support for resetting the |
48 | * internal modems on ISI cards. | |
49 | * | |
50 | * 08/02/01 anil .s Upgraded the driver for kernel | |
51 | * 2.4.x | |
52 | * | |
d8d16e47 | 53 | * 11/04/01 Kevin Fixed firmware load problem with |
1da177e4 | 54 | * ISIHP-4X card |
d8d16e47 | 55 | * |
1da177e4 LT |
56 | * 30/04/01 anil .s Fixed the remote login through |
57 | * ISI port problem. Now the link | |
58 | * does not go down before password | |
59 | * prompt. | |
60 | * | |
61 | * 03/05/01 anil .s Fixed the problem with IRQ sharing | |
62 | * among ISI-PCI cards. | |
63 | * | |
64 | * 03/05/01 anil .s Added support to display the version | |
d8d16e47 | 65 | * info during insmod as well as module |
1da177e4 | 66 | * listing by lsmod. |
d8d16e47 | 67 | * |
1da177e4 LT |
68 | * 10/05/01 anil .s Done the modifications to the source |
69 | * file and Install script so that the | |
70 | * same installation can be used for | |
71 | * 2.2.x and 2.4.x kernel. | |
72 | * | |
73 | * 06/06/01 anil .s Now we drop both dtr and rts during | |
74 | * shutdown_port as well as raise them | |
75 | * during isicom_config_port. | |
d8d16e47 | 76 | * |
1da177e4 LT |
77 | * 09/06/01 acme@conectiva.com.br use capable, not suser, do |
78 | * restore_flags on failure in | |
79 | * isicom_send_break, verify put_user | |
80 | * result | |
81 | * | |
d8d16e47 JS |
82 | * 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps |
83 | * Baud index extended to 21 | |
84 | * | |
85 | * 20/03/03 ranjeeth Made to work for Linux Advanced server. | |
86 | * Taken care of license warning. | |
87 | * | |
88 | * 10/12/03 Ravindra Made to work for Fedora Core 1 of | |
1da177e4 LT |
89 | * Red Hat Distribution |
90 | * | |
91 | * 06/01/05 Alan Cox Merged the ISI and base kernel strands | |
92 | * into a single 2.6 driver | |
93 | * | |
94 | * *********************************************************** | |
95 | * | |
d8d16e47 | 96 | * To use this driver you also need the support package. You |
1da177e4 LT |
97 | * can find this in RPM format on |
98 | * ftp://ftp.linux.org.uk/pub/linux/alan | |
d8d16e47 | 99 | * |
1da177e4 LT |
100 | * You can find the original tools for this direct from Multitech |
101 | * ftp://ftp.multitech.com/ISI-Cards/ | |
102 | * | |
103 | * Having installed the cards the module options (/etc/modprobe.conf) | |
104 | * | |
105 | * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4 | |
106 | * | |
107 | * Omit those entries for boards you don't have installed. | |
108 | * | |
109 | * TODO | |
110 | * Hotplug | |
111 | * Merge testing | |
112 | * 64-bit verification | |
113 | */ | |
114 | ||
115 | #include <linux/module.h> | |
116 | #include <linux/kernel.h> | |
117 | #include <linux/tty.h> | |
33f0f88f | 118 | #include <linux/tty_flip.h> |
1da177e4 LT |
119 | #include <linux/termios.h> |
120 | #include <linux/fs.h> | |
121 | #include <linux/sched.h> | |
122 | #include <linux/serial.h> | |
123 | #include <linux/mm.h> | |
124 | #include <linux/miscdevice.h> | |
125 | #include <linux/interrupt.h> | |
126 | #include <linux/timer.h> | |
127 | #include <linux/delay.h> | |
128 | #include <linux/ioport.h> | |
129 | ||
130 | #include <asm/uaccess.h> | |
131 | #include <asm/io.h> | |
132 | #include <asm/system.h> | |
133 | ||
134 | #include <linux/pci.h> | |
135 | ||
136 | #include <linux/isicom.h> | |
137 | ||
138 | static struct pci_device_id isicom_pci_tbl[] = { | |
139 | { VENDOR_ID, 0x2028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
140 | { VENDOR_ID, 0x2051, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
141 | { VENDOR_ID, 0x2052, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
142 | { VENDOR_ID, 0x2053, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
143 | { VENDOR_ID, 0x2054, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
144 | { VENDOR_ID, 0x2055, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
145 | { VENDOR_ID, 0x2056, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
146 | { VENDOR_ID, 0x2057, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
147 | { VENDOR_ID, 0x2058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
148 | { 0 } | |
149 | }; | |
150 | MODULE_DEVICE_TABLE(pci, isicom_pci_tbl); | |
151 | ||
152 | static int prev_card = 3; /* start servicing isi_card[0] */ | |
153 | static struct tty_driver *isicom_normal; | |
154 | ||
155 | static struct timer_list tx; | |
156 | static char re_schedule = 1; | |
157 | #ifdef ISICOM_DEBUG | |
158 | static unsigned long tx_count = 0; | |
159 | #endif | |
160 | ||
161 | static int ISILoad_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg); | |
162 | ||
163 | static void isicom_tx(unsigned long _data); | |
d8d16e47 | 164 | static void isicom_start(struct tty_struct *tty); |
1da177e4 | 165 | |
d8d16e47 | 166 | static unsigned char *tmp_buf; |
1da177e4 LT |
167 | static DECLARE_MUTEX(tmp_buf_sem); |
168 | ||
169 | /* baud index mappings from linux defns to isi */ | |
170 | ||
171 | static signed char linuxb_to_isib[] = { | |
d8d16e47 | 172 | -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19 |
1da177e4 LT |
173 | }; |
174 | ||
175 | struct isi_board { | |
176 | unsigned short base; | |
177 | unsigned char irq; | |
178 | unsigned char port_count; | |
179 | unsigned short status; | |
180 | unsigned short port_status; /* each bit represents a single port */ | |
181 | unsigned short shift_count; | |
182 | struct isi_port * ports; | |
183 | signed char count; | |
184 | unsigned char isa; | |
185 | spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */ | |
186 | unsigned long flags; | |
187 | }; | |
188 | ||
189 | struct isi_port { | |
190 | unsigned short magic; | |
191 | unsigned int flags; | |
192 | int count; | |
193 | int blocked_open; | |
194 | int close_delay; | |
195 | unsigned short channel; | |
196 | unsigned short status; | |
197 | unsigned short closing_wait; | |
198 | struct isi_board * card; | |
199 | struct tty_struct * tty; | |
200 | wait_queue_head_t close_wait; | |
201 | wait_queue_head_t open_wait; | |
202 | struct work_struct hangup_tq; | |
203 | struct work_struct bh_tqueue; | |
204 | unsigned char * xmit_buf; | |
205 | int xmit_head; | |
206 | int xmit_tail; | |
207 | int xmit_cnt; | |
208 | }; | |
209 | ||
210 | static struct isi_board isi_card[BOARD_COUNT]; | |
211 | static struct isi_port isi_ports[PORT_COUNT]; | |
212 | ||
213 | /* | |
214 | * Locking functions for card level locking. We need to own both | |
215 | * the kernel lock for the card and have the card in a position that | |
216 | * it wants to talk. | |
217 | */ | |
d8d16e47 | 218 | |
1da177e4 LT |
219 | static int lock_card(struct isi_board *card) |
220 | { | |
221 | char retries; | |
222 | unsigned short base = card->base; | |
223 | ||
224 | for (retries = 0; retries < 100; retries++) { | |
225 | spin_lock_irqsave(&card->card_lock, card->flags); | |
226 | if (inw(base + 0xe) & 0x1) { | |
d8d16e47 | 227 | return 1; |
1da177e4 LT |
228 | } else { |
229 | spin_unlock_irqrestore(&card->card_lock, card->flags); | |
230 | udelay(1000); /* 1ms */ | |
231 | } | |
232 | } | |
233 | printk(KERN_WARNING "ISICOM: Failed to lock Card (0x%x)\n", card->base); | |
234 | return 0; /* Failed to aquire the card! */ | |
235 | } | |
236 | ||
237 | static int lock_card_at_interrupt(struct isi_board *card) | |
238 | { | |
239 | unsigned char retries; | |
240 | unsigned short base = card->base; | |
241 | ||
242 | for (retries = 0; retries < 200; retries++) { | |
243 | spin_lock_irqsave(&card->card_lock, card->flags); | |
244 | ||
245 | if (inw(base + 0xe) & 0x1) | |
d8d16e47 | 246 | return 1; |
1da177e4 LT |
247 | else |
248 | spin_unlock_irqrestore(&card->card_lock, card->flags); | |
249 | } | |
250 | /* Failing in interrupt is an acceptable event */ | |
251 | return 0; /* Failed to aquire the card! */ | |
252 | } | |
253 | ||
254 | static void unlock_card(struct isi_board *card) | |
255 | { | |
256 | spin_unlock_irqrestore(&card->card_lock, card->flags); | |
257 | } | |
258 | ||
259 | /* | |
260 | * ISI Card specific ops ... | |
261 | */ | |
d8d16e47 JS |
262 | |
263 | static void raise_dtr(struct isi_port *port) | |
1da177e4 | 264 | { |
d8d16e47 | 265 | struct isi_board *card = port->card; |
1da177e4 LT |
266 | unsigned short base = card->base; |
267 | unsigned char channel = port->channel; | |
268 | ||
269 | if (!lock_card(card)) | |
270 | return; | |
271 | ||
d8d16e47 | 272 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 LT |
273 | outw(0x0504, base); |
274 | InterruptTheCard(base); | |
275 | port->status |= ISI_DTR; | |
276 | unlock_card(card); | |
277 | } | |
278 | ||
d8d16e47 JS |
279 | static inline void drop_dtr(struct isi_port *port) |
280 | { | |
281 | struct isi_board *card = port->card; | |
1da177e4 LT |
282 | unsigned short base = card->base; |
283 | unsigned char channel = port->channel; | |
284 | ||
285 | if (!lock_card(card)) | |
286 | return; | |
287 | ||
d8d16e47 | 288 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 289 | outw(0x0404, base); |
d8d16e47 | 290 | InterruptTheCard(base); |
1da177e4 LT |
291 | port->status &= ~ISI_DTR; |
292 | unlock_card(card); | |
293 | } | |
294 | ||
d8d16e47 | 295 | static inline void raise_rts(struct isi_port *port) |
1da177e4 | 296 | { |
d8d16e47 | 297 | struct isi_board *card = port->card; |
1da177e4 LT |
298 | unsigned short base = card->base; |
299 | unsigned char channel = port->channel; | |
300 | ||
301 | if (!lock_card(card)) | |
302 | return; | |
303 | ||
d8d16e47 | 304 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 305 | outw(0x0a04, base); |
d8d16e47 | 306 | InterruptTheCard(base); |
1da177e4 LT |
307 | port->status |= ISI_RTS; |
308 | unlock_card(card); | |
309 | } | |
d8d16e47 | 310 | static inline void drop_rts(struct isi_port *port) |
1da177e4 | 311 | { |
d8d16e47 | 312 | struct isi_board *card = port->card; |
1da177e4 LT |
313 | unsigned short base = card->base; |
314 | unsigned char channel = port->channel; | |
315 | ||
316 | if (!lock_card(card)) | |
317 | return; | |
318 | ||
d8d16e47 | 319 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 320 | outw(0x0804, base); |
d8d16e47 | 321 | InterruptTheCard(base); |
1da177e4 LT |
322 | port->status &= ~ISI_RTS; |
323 | unlock_card(card); | |
324 | } | |
325 | ||
d8d16e47 | 326 | static inline void raise_dtr_rts(struct isi_port *port) |
1da177e4 | 327 | { |
d8d16e47 | 328 | struct isi_board *card = port->card; |
1da177e4 LT |
329 | unsigned short base = card->base; |
330 | unsigned char channel = port->channel; | |
331 | ||
332 | if (!lock_card(card)) | |
333 | return; | |
334 | ||
d8d16e47 | 335 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 LT |
336 | outw(0x0f04, base); |
337 | InterruptTheCard(base); | |
338 | port->status |= (ISI_DTR | ISI_RTS); | |
339 | unlock_card(card); | |
340 | } | |
341 | ||
d8d16e47 | 342 | static void drop_dtr_rts(struct isi_port *port) |
1da177e4 | 343 | { |
d8d16e47 | 344 | struct isi_board *card = port->card; |
1da177e4 LT |
345 | unsigned short base = card->base; |
346 | unsigned char channel = port->channel; | |
347 | ||
348 | if (!lock_card(card)) | |
349 | return; | |
350 | ||
d8d16e47 | 351 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 352 | outw(0x0c04, base); |
d8d16e47 | 353 | InterruptTheCard(base); |
1da177e4 LT |
354 | port->status &= ~(ISI_RTS | ISI_DTR); |
355 | unlock_card(card); | |
356 | } | |
357 | ||
d8d16e47 | 358 | static inline void kill_queue(struct isi_port *port, short queue) |
1da177e4 | 359 | { |
d8d16e47 | 360 | struct isi_board *card = port->card; |
1da177e4 LT |
361 | unsigned short base = card->base; |
362 | unsigned char channel = port->channel; | |
363 | ||
364 | if (!lock_card(card)) | |
365 | return; | |
366 | ||
d8d16e47 | 367 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 368 | outw((queue << 8) | 0x06, base); |
d8d16e47 | 369 | InterruptTheCard(base); |
1da177e4 LT |
370 | unlock_card(card); |
371 | } | |
372 | ||
373 | ||
d8d16e47 | 374 | /* |
1da177e4 LT |
375 | * Firmware loader driver specific routines. This needs to mostly die |
376 | * and be replaced with request_firmware. | |
377 | */ | |
378 | ||
379 | static struct file_operations ISILoad_fops = { | |
380 | .owner = THIS_MODULE, | |
381 | .ioctl = ISILoad_ioctl, | |
382 | }; | |
383 | ||
384 | static struct miscdevice isiloader_device = { | |
385 | ISILOAD_MISC_MINOR, "isictl", &ISILoad_fops | |
386 | }; | |
387 | ||
d8d16e47 | 388 | |
1da177e4 LT |
389 | static inline int WaitTillCardIsFree(unsigned short base) |
390 | { | |
391 | unsigned long count=0; | |
392 | while( (!(inw(base+0xe) & 0x1)) && (count++ < 6000000)); | |
d8d16e47 | 393 | if (inw(base+0xe)&0x1) |
1da177e4 LT |
394 | return 0; |
395 | else | |
396 | return 1; | |
397 | } | |
398 | ||
399 | static int ISILoad_ioctl(struct inode *inode, struct file *filp, | |
d8d16e47 | 400 | unsigned int cmd, unsigned long arg) |
1da177e4 LT |
401 | { |
402 | unsigned int card, i, j, signature, status, portcount = 0; | |
403 | unsigned long t; | |
404 | unsigned short word_count, base; | |
405 | bin_frame frame; | |
406 | void __user *argp = (void __user *)arg; | |
407 | /* exec_record exec_rec; */ | |
d8d16e47 JS |
408 | |
409 | if (get_user(card, (int __user *)argp)) | |
1da177e4 | 410 | return -EFAULT; |
d8d16e47 JS |
411 | |
412 | if (card < 0 || card >= BOARD_COUNT) | |
1da177e4 | 413 | return -ENXIO; |
d8d16e47 | 414 | |
1da177e4 | 415 | base=isi_card[card].base; |
d8d16e47 JS |
416 | |
417 | if (base==0) | |
1da177e4 | 418 | return -ENXIO; /* disabled or not used */ |
d8d16e47 | 419 | |
1da177e4 | 420 | switch(cmd) { |
d8d16e47 JS |
421 | case MIOCTL_RESET_CARD: |
422 | if (!capable(CAP_SYS_ADMIN)) | |
423 | return -EPERM; | |
424 | printk(KERN_DEBUG "ISILoad:Resetting Card%d at 0x%x ",card+1,base); | |
425 | ||
426 | inw(base+0x8); | |
427 | ||
428 | for (t=jiffies+HZ/100;time_before(jiffies, t);); | |
429 | ||
430 | outw(0,base+0x8); /* Reset */ | |
431 | ||
432 | for (j=1;j<=3;j++) { | |
433 | for (t=jiffies+HZ;time_before(jiffies, t);); | |
434 | printk("."); | |
435 | } | |
436 | signature=(inw(base+0x4)) & 0xff; | |
437 | if (isi_card[card].isa) { | |
438 | ||
439 | if (!(inw(base+0xe) & 0x1) || (inw(base+0x2))) { | |
1da177e4 | 440 | #ifdef ISICOM_DEBUG |
d8d16e47 | 441 | printk("\nbase+0x2=0x%x , base+0xe=0x%x",inw(base+0x2),inw(base+0xe)); |
1da177e4 | 442 | #endif |
d8d16e47 JS |
443 | printk("\nISILoad:ISA Card%d reset failure (Possible bad I/O Port Address 0x%x).\n",card+1,base); |
444 | return -EIO; | |
445 | } | |
446 | } | |
447 | else { | |
448 | portcount = inw(base+0x2); | |
449 | if (!(inw(base+0xe) & 0x1) || ((portcount!=0) && (portcount!=4) && (portcount!=8))) { | |
450 | #ifdef ISICOM_DEBUG | |
451 | printk("\nbase+0x2=0x%x , base+0xe=0x%x",inw(base+0x2),inw(base+0xe)); | |
452 | #endif | |
453 | printk("\nISILoad:PCI Card%d reset failure (Possible bad I/O Port Address 0x%x).\n",card+1,base); | |
454 | return -EIO; | |
1da177e4 | 455 | } |
d8d16e47 JS |
456 | } |
457 | switch(signature) { | |
458 | case 0xa5: | |
459 | case 0xbb: | |
460 | case 0xdd: | |
461 | if (isi_card[card].isa) | |
462 | isi_card[card].port_count = 8; | |
463 | else { | |
464 | if (portcount == 4) | |
465 | isi_card[card].port_count = 4; | |
466 | else | |
467 | isi_card[card].port_count = 8; | |
468 | } | |
469 | isi_card[card].shift_count = 12; | |
470 | break; | |
471 | ||
472 | case 0xcc: isi_card[card].port_count = 16; | |
473 | isi_card[card].shift_count = 11; | |
474 | break; | |
475 | ||
476 | default: printk("ISILoad:Card%d reset failure (Possible bad I/O Port Address 0x%x).\n",card+1,base); | |
477 | #ifdef ISICOM_DEBUG | |
478 | printk("Sig=0x%x\n",signature); | |
479 | #endif | |
480 | return -EIO; | |
481 | } | |
482 | printk("-Done\n"); | |
483 | return put_user(signature,(unsigned __user *)argp); | |
484 | ||
1da177e4 LT |
485 | case MIOCTL_LOAD_FIRMWARE: |
486 | if (!capable(CAP_SYS_ADMIN)) | |
487 | return -EPERM; | |
d8d16e47 JS |
488 | |
489 | if (copy_from_user(&frame, argp, sizeof(bin_frame))) | |
1da177e4 | 490 | return -EFAULT; |
d8d16e47 | 491 | |
1da177e4 LT |
492 | if (WaitTillCardIsFree(base)) |
493 | return -EIO; | |
d8d16e47 JS |
494 | |
495 | outw(0xf0,base); /* start upload sequence */ | |
1da177e4 | 496 | outw(0x00,base); |
d8d16e47 JS |
497 | outw((frame.addr), base); /* lsb of adderess */ |
498 | ||
1da177e4 LT |
499 | word_count=(frame.count >> 1) + frame.count % 2; |
500 | outw(word_count, base); | |
501 | InterruptTheCard(base); | |
d8d16e47 JS |
502 | |
503 | for (i=0;i<=0x2f;i++); /* a wee bit of delay */ | |
504 | ||
505 | if (WaitTillCardIsFree(base)) | |
1da177e4 | 506 | return -EIO; |
d8d16e47 | 507 | |
1da177e4 | 508 | if ((status=inw(base+0x4))!=0) { |
d8d16e47 | 509 | printk(KERN_WARNING "ISILoad:Card%d rejected load header:\nAddress:0x%x \nCount:0x%x \nStatus:0x%x \n", |
1da177e4 LT |
510 | card+1, frame.addr, frame.count, status); |
511 | return -EIO; | |
512 | } | |
513 | outsw(base, (void *) frame.bin_data, word_count); | |
d8d16e47 | 514 | |
1da177e4 | 515 | InterruptTheCard(base); |
d8d16e47 JS |
516 | |
517 | for (i=0;i<=0x0f;i++); /* another wee bit of delay */ | |
518 | ||
519 | if (WaitTillCardIsFree(base)) | |
1da177e4 | 520 | return -EIO; |
d8d16e47 | 521 | |
1da177e4 LT |
522 | if ((status=inw(base+0x4))!=0) { |
523 | printk(KERN_ERR "ISILoad:Card%d got out of sync.Card Status:0x%x\n",card+1, status); | |
524 | return -EIO; | |
d8d16e47 | 525 | } |
1da177e4 | 526 | return 0; |
d8d16e47 | 527 | |
1da177e4 LT |
528 | case MIOCTL_READ_FIRMWARE: |
529 | if (!capable(CAP_SYS_ADMIN)) | |
530 | return -EPERM; | |
d8d16e47 JS |
531 | |
532 | if (copy_from_user(&frame, argp, sizeof(bin_header))) | |
1da177e4 | 533 | return -EFAULT; |
d8d16e47 | 534 | |
1da177e4 LT |
535 | if (WaitTillCardIsFree(base)) |
536 | return -EIO; | |
d8d16e47 JS |
537 | |
538 | outw(0xf1,base); /* start download sequence */ | |
1da177e4 | 539 | outw(0x00,base); |
d8d16e47 JS |
540 | outw((frame.addr), base); /* lsb of adderess */ |
541 | ||
1da177e4 LT |
542 | word_count=(frame.count >> 1) + frame.count % 2; |
543 | outw(word_count+1, base); | |
544 | InterruptTheCard(base); | |
d8d16e47 JS |
545 | |
546 | for (i=0;i<=0xf;i++); /* a wee bit of delay */ | |
547 | ||
548 | if (WaitTillCardIsFree(base)) | |
1da177e4 | 549 | return -EIO; |
d8d16e47 | 550 | |
1da177e4 | 551 | if ((status=inw(base+0x4))!=0) { |
d8d16e47 | 552 | printk(KERN_WARNING "ISILoad:Card%d rejected verify header:\nAddress:0x%x \nCount:0x%x \nStatus:0x%x \n", |
1da177e4 LT |
553 | card+1, frame.addr, frame.count, status); |
554 | return -EIO; | |
555 | } | |
d8d16e47 | 556 | |
1da177e4 LT |
557 | inw(base); |
558 | insw(base, frame.bin_data, word_count); | |
559 | InterruptTheCard(base); | |
d8d16e47 JS |
560 | |
561 | for (i=0;i<=0x0f;i++); /* another wee bit of delay */ | |
562 | ||
563 | if (WaitTillCardIsFree(base)) | |
1da177e4 | 564 | return -EIO; |
d8d16e47 | 565 | |
1da177e4 LT |
566 | if ((status=inw(base+0x4))!=0) { |
567 | printk(KERN_ERR "ISILoad:Card%d verify got out of sync.Card Status:0x%x\n",card+1, status); | |
568 | return -EIO; | |
d8d16e47 JS |
569 | } |
570 | ||
571 | if (copy_to_user(argp, &frame, sizeof(bin_frame))) | |
1da177e4 LT |
572 | return -EFAULT; |
573 | return 0; | |
d8d16e47 | 574 | |
1da177e4 LT |
575 | case MIOCTL_XFER_CTRL: |
576 | if (!capable(CAP_SYS_ADMIN)) | |
577 | return -EPERM; | |
d8d16e47 | 578 | if (WaitTillCardIsFree(base)) |
1da177e4 | 579 | return -EIO; |
d8d16e47 | 580 | |
1da177e4 LT |
581 | outw(0xf2, base); |
582 | outw(0x800, base); | |
583 | outw(0x0, base); | |
584 | outw(0x0, base); | |
585 | InterruptTheCard(base); | |
d8d16e47 JS |
586 | outw(0x0, base+0x4); /* for ISI4608 cards */ |
587 | ||
1da177e4 | 588 | isi_card[card].status |= FIRMWARE_LOADED; |
d8d16e47 JS |
589 | return 0; |
590 | ||
1da177e4 | 591 | default: |
d8d16e47 JS |
592 | #ifdef ISICOM_DEBUG |
593 | printk(KERN_DEBUG "ISILoad: Received Ioctl cmd 0x%x.\n", cmd); | |
1da177e4 LT |
594 | #endif |
595 | return -ENOIOCTLCMD; | |
1da177e4 | 596 | } |
1da177e4 | 597 | } |
d8d16e47 | 598 | |
1da177e4 LT |
599 | |
600 | /* | |
601 | * ISICOM Driver specific routines ... | |
602 | * | |
603 | */ | |
d8d16e47 JS |
604 | |
605 | static inline int isicom_paranoia_check(struct isi_port const *port, char *name, | |
606 | const char *routine) | |
1da177e4 | 607 | { |
d8d16e47 JS |
608 | #ifdef ISICOM_DEBUG |
609 | static const char *badmagic = | |
1da177e4 | 610 | KERN_WARNING "ISICOM: Warning: bad isicom magic for dev %s in %s.\n"; |
d8d16e47 JS |
611 | static const char *badport = |
612 | KERN_WARNING "ISICOM: Warning: NULL isicom port for dev %s in %s.\n"; | |
1da177e4 LT |
613 | if (!port) { |
614 | printk(badport, name, routine); | |
615 | return 1; | |
616 | } | |
617 | if (port->magic != ISICOM_MAGIC) { | |
618 | printk(badmagic, name, routine); | |
619 | return 1; | |
d8d16e47 JS |
620 | } |
621 | #endif | |
1da177e4 LT |
622 | return 0; |
623 | } | |
d8d16e47 | 624 | |
1da177e4 | 625 | /* |
d8d16e47 | 626 | * Transmitter. |
1da177e4 LT |
627 | * |
628 | * We shovel data into the card buffers on a regular basis. The card | |
629 | * will do the rest of the work for us. | |
630 | */ | |
631 | ||
632 | static void isicom_tx(unsigned long _data) | |
633 | { | |
634 | short count = (BOARD_COUNT-1), card, base; | |
635 | short txcount, wrd, residue, word_count, cnt; | |
d8d16e47 JS |
636 | struct isi_port *port; |
637 | struct tty_struct *tty; | |
638 | ||
1da177e4 LT |
639 | #ifdef ISICOM_DEBUG |
640 | ++tx_count; | |
d8d16e47 JS |
641 | #endif |
642 | ||
1da177e4 LT |
643 | /* find next active board */ |
644 | card = (prev_card + 1) & 0x0003; | |
645 | while(count-- > 0) { | |
d8d16e47 | 646 | if (isi_card[card].status & BOARD_ACTIVE) |
1da177e4 | 647 | break; |
d8d16e47 | 648 | card = (card + 1) & 0x0003; |
1da177e4 LT |
649 | } |
650 | if (!(isi_card[card].status & BOARD_ACTIVE)) | |
651 | goto sched_again; | |
d8d16e47 | 652 | |
1da177e4 | 653 | prev_card = card; |
d8d16e47 | 654 | |
1da177e4 LT |
655 | count = isi_card[card].port_count; |
656 | port = isi_card[card].ports; | |
657 | base = isi_card[card].base; | |
658 | for (;count > 0;count--, port++) { | |
659 | if (!lock_card_at_interrupt(&isi_card[card])) | |
660 | continue; | |
661 | /* port not active or tx disabled to force flow control */ | |
662 | if (!(port->flags & ASYNC_INITIALIZED) || | |
d8d16e47 | 663 | !(port->status & ISI_TXOK)) |
1da177e4 LT |
664 | unlock_card(&isi_card[card]); |
665 | continue; | |
d8d16e47 | 666 | |
1da177e4 | 667 | tty = port->tty; |
d8d16e47 JS |
668 | |
669 | ||
670 | if (tty == NULL) { | |
1da177e4 LT |
671 | unlock_card(&isi_card[card]); |
672 | continue; | |
673 | } | |
d8d16e47 | 674 | |
1da177e4 LT |
675 | txcount = min_t(short, TX_SIZE, port->xmit_cnt); |
676 | if (txcount <= 0 || tty->stopped || tty->hw_stopped) { | |
677 | unlock_card(&isi_card[card]); | |
678 | continue; | |
679 | } | |
680 | if (!(inw(base + 0x02) & (1 << port->channel))) { | |
681 | unlock_card(&isi_card[card]); | |
d8d16e47 | 682 | continue; |
1da177e4 LT |
683 | } |
684 | #ifdef ISICOM_DEBUG | |
d8d16e47 JS |
685 | printk(KERN_DEBUG "ISICOM: txing %d bytes, port%d.\n", |
686 | txcount, port->channel+1); | |
687 | #endif | |
1da177e4 LT |
688 | outw((port->channel << isi_card[card].shift_count) | txcount |
689 | , base); | |
690 | residue = NO; | |
d8d16e47 | 691 | wrd = 0; |
1da177e4 LT |
692 | while (1) { |
693 | cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE - port->xmit_tail)); | |
694 | if (residue == YES) { | |
695 | residue = NO; | |
696 | if (cnt > 0) { | |
697 | wrd |= (port->xmit_buf[port->xmit_tail] << 8); | |
698 | port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1); | |
699 | port->xmit_cnt--; | |
700 | txcount--; | |
701 | cnt--; | |
d8d16e47 | 702 | outw(wrd, base); |
1da177e4 LT |
703 | } |
704 | else { | |
705 | outw(wrd, base); | |
706 | break; | |
707 | } | |
d8d16e47 | 708 | } |
1da177e4 LT |
709 | if (cnt <= 0) break; |
710 | word_count = cnt >> 1; | |
711 | outsw(base, port->xmit_buf+port->xmit_tail, word_count); | |
712 | port->xmit_tail = (port->xmit_tail + (word_count << 1)) & | |
713 | (SERIAL_XMIT_SIZE - 1); | |
714 | txcount -= (word_count << 1); | |
715 | port->xmit_cnt -= (word_count << 1); | |
716 | if (cnt & 0x0001) { | |
717 | residue = YES; | |
718 | wrd = port->xmit_buf[port->xmit_tail]; | |
719 | port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1); | |
720 | port->xmit_cnt--; | |
721 | txcount--; | |
722 | } | |
723 | } | |
724 | ||
725 | InterruptTheCard(base); | |
726 | if (port->xmit_cnt <= 0) | |
727 | port->status &= ~ISI_TXOK; | |
728 | if (port->xmit_cnt <= WAKEUP_CHARS) | |
729 | schedule_work(&port->bh_tqueue); | |
730 | unlock_card(&isi_card[card]); | |
d8d16e47 | 731 | } |
1da177e4 | 732 | |
d8d16e47 JS |
733 | /* schedule another tx for hopefully in about 10ms */ |
734 | sched_again: | |
735 | if (!re_schedule) | |
1da177e4 LT |
736 | return; |
737 | init_timer(&tx); | |
738 | tx.expires = jiffies + HZ/100; | |
739 | tx.data = 0; | |
740 | tx.function = isicom_tx; | |
741 | add_timer(&tx); | |
d8d16e47 JS |
742 | |
743 | return; | |
744 | } | |
745 | ||
1da177e4 LT |
746 | /* Interrupt handlers */ |
747 | ||
d8d16e47 JS |
748 | |
749 | static void isicom_bottomhalf(void *data) | |
1da177e4 | 750 | { |
d8d16e47 JS |
751 | struct isi_port *port = (struct isi_port *) data; |
752 | struct tty_struct *tty = port->tty; | |
753 | ||
1da177e4 LT |
754 | if (!tty) |
755 | return; | |
756 | ||
d8d16e47 | 757 | tty_wakeup(tty); |
1da177e4 | 758 | wake_up_interruptible(&tty->write_wait); |
d8d16e47 JS |
759 | } |
760 | ||
1da177e4 | 761 | /* |
d8d16e47 | 762 | * Main interrupt handler routine |
1da177e4 | 763 | */ |
d8d16e47 | 764 | |
1da177e4 LT |
765 | static irqreturn_t isicom_interrupt(int irq, void *dev_id, |
766 | struct pt_regs *regs) | |
767 | { | |
d8d16e47 JS |
768 | struct isi_board *card; |
769 | struct isi_port *port; | |
770 | struct tty_struct *tty; | |
1da177e4 LT |
771 | unsigned short base, header, word_count, count; |
772 | unsigned char channel; | |
773 | short byte_count; | |
33f0f88f | 774 | unsigned char *rp; |
d8d16e47 | 775 | |
1da177e4 LT |
776 | card = (struct isi_board *) dev_id; |
777 | ||
778 | if (!card || !(card->status & FIRMWARE_LOADED)) | |
779 | return IRQ_NONE; | |
d8d16e47 | 780 | |
1da177e4 LT |
781 | base = card->base; |
782 | spin_lock(&card->card_lock); | |
d8d16e47 | 783 | |
1da177e4 LT |
784 | if (card->isa == NO) { |
785 | /* | |
d8d16e47 JS |
786 | * disable any interrupts from the PCI card and lower the |
787 | * interrupt line | |
1da177e4 LT |
788 | */ |
789 | outw(0x8000, base+0x04); | |
790 | ClearInterrupt(base); | |
791 | } | |
d8d16e47 | 792 | |
1da177e4 LT |
793 | inw(base); /* get the dummy word out */ |
794 | header = inw(base); | |
795 | channel = (header & 0x7800) >> card->shift_count; | |
796 | byte_count = header & 0xff; | |
797 | ||
798 | if (channel + 1 > card->port_count) { | |
799 | printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%x): %d(channel) > port_count.\n", | |
800 | base, channel+1); | |
801 | if (card->isa) | |
802 | ClearInterrupt(base); | |
803 | else | |
d8d16e47 | 804 | outw(0x0000, base+0x04); /* enable interrupts */ |
1da177e4 | 805 | spin_unlock(&card->card_lock); |
d8d16e47 | 806 | return IRQ_HANDLED; |
1da177e4 LT |
807 | } |
808 | port = card->ports + channel; | |
809 | if (!(port->flags & ASYNC_INITIALIZED)) { | |
810 | if (card->isa) | |
811 | ClearInterrupt(base); | |
812 | else | |
813 | outw(0x0000, base+0x04); /* enable interrupts */ | |
814 | return IRQ_HANDLED; | |
d8d16e47 JS |
815 | } |
816 | ||
1da177e4 LT |
817 | tty = port->tty; |
818 | if (tty == NULL) { | |
819 | word_count = byte_count >> 1; | |
820 | while(byte_count > 1) { | |
821 | inw(base); | |
822 | byte_count -= 2; | |
823 | } | |
824 | if (byte_count & 0x01) | |
825 | inw(base); | |
826 | if (card->isa == YES) | |
827 | ClearInterrupt(base); | |
828 | else | |
829 | outw(0x0000, base+0x04); /* enable interrupts */ | |
830 | spin_unlock(&card->card_lock); | |
831 | return IRQ_HANDLED; | |
832 | } | |
d8d16e47 | 833 | |
1da177e4 LT |
834 | if (header & 0x8000) { /* Status Packet */ |
835 | header = inw(base); | |
836 | switch(header & 0xff) { | |
d8d16e47 JS |
837 | case 0: /* Change in EIA signals */ |
838 | ||
839 | if (port->flags & ASYNC_CHECK_CD) { | |
840 | if (port->status & ISI_DCD) { | |
841 | if (!(header & ISI_DCD)) { | |
842 | /* Carrier has been lost */ | |
1da177e4 | 843 | #ifdef ISICOM_DEBUG |
d8d16e47 JS |
844 | printk(KERN_DEBUG "ISICOM: interrupt: DCD->low.\n"); |
845 | #endif | |
846 | port->status &= ~ISI_DCD; | |
847 | schedule_work(&port->hangup_tq); | |
1da177e4 LT |
848 | } |
849 | } | |
850 | else { | |
d8d16e47 JS |
851 | if (header & ISI_DCD) { |
852 | /* Carrier has been detected */ | |
853 | #ifdef ISICOM_DEBUG | |
854 | printk(KERN_DEBUG "ISICOM: interrupt: DCD->high.\n"); | |
855 | #endif | |
1da177e4 | 856 | port->status |= ISI_DCD; |
d8d16e47 | 857 | wake_up_interruptible(&port->open_wait); |
1da177e4 | 858 | } |
d8d16e47 JS |
859 | } |
860 | } | |
861 | else { | |
862 | if (header & ISI_DCD) | |
863 | port->status |= ISI_DCD; | |
864 | else | |
865 | port->status &= ~ISI_DCD; | |
866 | } | |
867 | ||
868 | if (port->flags & ASYNC_CTS_FLOW) { | |
869 | if (port->tty->hw_stopped) { | |
870 | if (header & ISI_CTS) { | |
871 | port->tty->hw_stopped = 0; | |
872 | /* start tx ing */ | |
873 | port->status |= (ISI_TXOK | ISI_CTS); | |
874 | schedule_work(&port->bh_tqueue); | |
1da177e4 LT |
875 | } |
876 | } | |
877 | else { | |
d8d16e47 JS |
878 | if (!(header & ISI_CTS)) { |
879 | port->tty->hw_stopped = 1; | |
880 | /* stop tx ing */ | |
881 | port->status &= ~(ISI_TXOK | ISI_CTS); | |
882 | } | |
1da177e4 | 883 | } |
d8d16e47 JS |
884 | } |
885 | else { | |
886 | if (header & ISI_CTS) | |
887 | port->status |= ISI_CTS; | |
1da177e4 | 888 | else |
d8d16e47 JS |
889 | port->status &= ~ISI_CTS; |
890 | } | |
891 | ||
892 | if (header & ISI_DSR) | |
893 | port->status |= ISI_DSR; | |
894 | else | |
895 | port->status &= ~ISI_DSR; | |
896 | ||
897 | if (header & ISI_RI) | |
898 | port->status |= ISI_RI; | |
899 | else | |
900 | port->status &= ~ISI_RI; | |
901 | ||
902 | break; | |
903 | ||
904 | case 1: /* Received Break !!! */ | |
905 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
906 | if (port->flags & ASYNC_SAK) | |
907 | do_SAK(tty); | |
908 | tty_flip_buffer_push(tty); | |
909 | break; | |
910 | ||
911 | case 2: /* Statistics */ | |
912 | printk(KERN_DEBUG "ISICOM: isicom_interrupt: stats!!!.\n"); | |
913 | break; | |
914 | ||
915 | default: | |
916 | printk(KERN_WARNING "ISICOM: Intr: Unknown code in status packet.\n"); | |
917 | break; | |
918 | } | |
1da177e4 LT |
919 | } |
920 | else { /* Data Packet */ | |
33f0f88f AC |
921 | |
922 | count = tty_prepare_flip_string(tty, &rp, byte_count & ~1); | |
1da177e4 | 923 | #ifdef ISICOM_DEBUG |
d8d16e47 | 924 | printk(KERN_DEBUG "ISICOM: Intr: Can rx %d of %d bytes.\n", |
1da177e4 | 925 | count, byte_count); |
d8d16e47 | 926 | #endif |
1da177e4 | 927 | word_count = count >> 1; |
33f0f88f | 928 | insw(base, rp, word_count); |
1da177e4 LT |
929 | byte_count -= (word_count << 1); |
930 | if (count & 0x0001) { | |
33f0f88f | 931 | tty_insert_flip_char(tty, inw(base) & 0xff, TTY_NORMAL); |
1da177e4 | 932 | byte_count -= 2; |
d8d16e47 | 933 | } |
1da177e4 LT |
934 | if (byte_count > 0) { |
935 | printk(KERN_DEBUG "ISICOM: Intr(0x%x:%d): Flip buffer overflow! dropping bytes...\n", | |
936 | base, channel+1); | |
937 | while(byte_count > 0) { /* drain out unread xtra data */ | |
938 | inw(base); | |
939 | byte_count -= 2; | |
940 | } | |
941 | } | |
33f0f88f | 942 | tty_flip_buffer_push(tty); |
1da177e4 LT |
943 | } |
944 | if (card->isa == YES) | |
945 | ClearInterrupt(base); | |
946 | else | |
d8d16e47 | 947 | outw(0x0000, base+0x04); /* enable interrupts */ |
1da177e4 | 948 | return IRQ_HANDLED; |
d8d16e47 | 949 | } |
1da177e4 | 950 | |
d8d16e47 | 951 | static void isicom_config_port(struct isi_port *port) |
1da177e4 | 952 | { |
d8d16e47 JS |
953 | struct isi_board *card = port->card; |
954 | struct tty_struct *tty; | |
1da177e4 LT |
955 | unsigned long baud; |
956 | unsigned short channel_setup, base = card->base; | |
957 | unsigned short channel = port->channel, shift_count = card->shift_count; | |
958 | unsigned char flow_ctrl; | |
d8d16e47 | 959 | |
1da177e4 LT |
960 | if (!(tty = port->tty) || !tty->termios) |
961 | return; | |
962 | baud = C_BAUD(tty); | |
963 | if (baud & CBAUDEX) { | |
964 | baud &= ~CBAUDEX; | |
d8d16e47 | 965 | |
1da177e4 LT |
966 | /* if CBAUDEX bit is on and the baud is set to either 50 or 75 |
967 | * then the card is programmed for 57.6Kbps or 115Kbps | |
968 | * respectively. | |
d8d16e47 JS |
969 | */ |
970 | ||
1da177e4 LT |
971 | if (baud < 1 || baud > 2) |
972 | port->tty->termios->c_cflag &= ~CBAUDEX; | |
973 | else | |
974 | baud += 15; | |
d8d16e47 | 975 | } |
1da177e4 | 976 | if (baud == 15) { |
d8d16e47 JS |
977 | |
978 | /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set | |
1da177e4 LT |
979 | * by the set_serial_info ioctl ... this is done by |
980 | * the 'setserial' utility. | |
d8d16e47 JS |
981 | */ |
982 | ||
1da177e4 | 983 | if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
d8d16e47 | 984 | baud++; /* 57.6 Kbps */ |
1da177e4 | 985 | if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
d8d16e47 | 986 | baud +=2; /* 115 Kbps */ |
1da177e4 LT |
987 | } |
988 | if (linuxb_to_isib[baud] == -1) { | |
989 | /* hang up */ | |
d8d16e47 JS |
990 | drop_dtr(port); |
991 | return; | |
992 | } | |
993 | else | |
1da177e4 | 994 | raise_dtr(port); |
d8d16e47 | 995 | |
1da177e4 LT |
996 | if (lock_card(card)) { |
997 | outw(0x8000 | (channel << shift_count) |0x03, base); | |
998 | outw(linuxb_to_isib[baud] << 8 | 0x03, base); | |
999 | channel_setup = 0; | |
1000 | switch(C_CSIZE(tty)) { | |
d8d16e47 JS |
1001 | case CS5: |
1002 | channel_setup |= ISICOM_CS5; | |
1003 | break; | |
1004 | case CS6: | |
1005 | channel_setup |= ISICOM_CS6; | |
1006 | break; | |
1007 | case CS7: | |
1008 | channel_setup |= ISICOM_CS7; | |
1009 | break; | |
1010 | case CS8: | |
1011 | channel_setup |= ISICOM_CS8; | |
1012 | break; | |
1da177e4 | 1013 | } |
d8d16e47 | 1014 | |
1da177e4 LT |
1015 | if (C_CSTOPB(tty)) |
1016 | channel_setup |= ISICOM_2SB; | |
1017 | if (C_PARENB(tty)) { | |
1018 | channel_setup |= ISICOM_EVPAR; | |
1019 | if (C_PARODD(tty)) | |
d8d16e47 | 1020 | channel_setup |= ISICOM_ODPAR; |
1da177e4 | 1021 | } |
d8d16e47 | 1022 | outw(channel_setup, base); |
1da177e4 | 1023 | InterruptTheCard(base); |
d8d16e47 JS |
1024 | unlock_card(card); |
1025 | } | |
1da177e4 LT |
1026 | if (C_CLOCAL(tty)) |
1027 | port->flags &= ~ASYNC_CHECK_CD; | |
1028 | else | |
d8d16e47 JS |
1029 | port->flags |= ASYNC_CHECK_CD; |
1030 | ||
1da177e4 LT |
1031 | /* flow control settings ...*/ |
1032 | flow_ctrl = 0; | |
1033 | port->flags &= ~ASYNC_CTS_FLOW; | |
1034 | if (C_CRTSCTS(tty)) { | |
1035 | port->flags |= ASYNC_CTS_FLOW; | |
1036 | flow_ctrl |= ISICOM_CTSRTS; | |
d8d16e47 JS |
1037 | } |
1038 | if (I_IXON(tty)) | |
1da177e4 LT |
1039 | flow_ctrl |= ISICOM_RESPOND_XONXOFF; |
1040 | if (I_IXOFF(tty)) | |
d8d16e47 JS |
1041 | flow_ctrl |= ISICOM_INITIATE_XONXOFF; |
1042 | ||
1da177e4 LT |
1043 | if (lock_card(card)) { |
1044 | outw(0x8000 | (channel << shift_count) |0x04, base); | |
1045 | outw(flow_ctrl << 8 | 0x05, base); | |
1046 | outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base); | |
1047 | InterruptTheCard(base); | |
1048 | unlock_card(card); | |
1049 | } | |
d8d16e47 | 1050 | |
1da177e4 LT |
1051 | /* rx enabled -> enable port for rx on the card */ |
1052 | if (C_CREAD(tty)) { | |
1053 | card->port_status |= (1 << channel); | |
1054 | outw(card->port_status, base + 0x02); | |
1055 | } | |
1056 | } | |
1da177e4 | 1057 | |
d8d16e47 JS |
1058 | /* open et all */ |
1059 | ||
1060 | static inline void isicom_setup_board(struct isi_board *bp) | |
1da177e4 LT |
1061 | { |
1062 | int channel; | |
d8d16e47 | 1063 | struct isi_port *port; |
1da177e4 | 1064 | unsigned long flags; |
d8d16e47 | 1065 | |
1da177e4 LT |
1066 | spin_lock_irqsave(&bp->card_lock, flags); |
1067 | if (bp->status & BOARD_ACTIVE) { | |
1068 | spin_unlock_irqrestore(&bp->card_lock, flags); | |
1069 | return; | |
1070 | } | |
1071 | port = bp->ports; | |
1072 | bp->status |= BOARD_ACTIVE; | |
1073 | spin_unlock_irqrestore(&bp->card_lock, flags); | |
d8d16e47 | 1074 | for (channel = 0; channel < bp->port_count; channel++, port++) |
1da177e4 LT |
1075 | drop_dtr_rts(port); |
1076 | return; | |
1077 | } | |
d8d16e47 JS |
1078 | |
1079 | static int isicom_setup_port(struct isi_port *port) | |
1da177e4 | 1080 | { |
d8d16e47 | 1081 | struct isi_board *card = port->card; |
1da177e4 | 1082 | unsigned long flags; |
d8d16e47 | 1083 | |
1da177e4 LT |
1084 | if (port->flags & ASYNC_INITIALIZED) { |
1085 | return 0; | |
1086 | } | |
1087 | if (!port->xmit_buf) { | |
1088 | unsigned long page; | |
d8d16e47 | 1089 | |
1da177e4 LT |
1090 | if (!(page = get_zeroed_page(GFP_KERNEL))) |
1091 | return -ENOMEM; | |
d8d16e47 | 1092 | |
1da177e4 LT |
1093 | if (port->xmit_buf) { |
1094 | free_page(page); | |
1095 | return -ERESTARTSYS; | |
1096 | } | |
d8d16e47 JS |
1097 | port->xmit_buf = (unsigned char *) page; |
1098 | } | |
1da177e4 LT |
1099 | |
1100 | spin_lock_irqsave(&card->card_lock, flags); | |
1101 | if (port->tty) | |
1102 | clear_bit(TTY_IO_ERROR, &port->tty->flags); | |
1103 | if (port->count == 1) | |
1104 | card->count++; | |
d8d16e47 | 1105 | |
1da177e4 | 1106 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; |
d8d16e47 | 1107 | |
1da177e4 LT |
1108 | /* discard any residual data */ |
1109 | kill_queue(port, ISICOM_KILLTX | ISICOM_KILLRX); | |
d8d16e47 | 1110 | |
1da177e4 LT |
1111 | isicom_config_port(port); |
1112 | port->flags |= ASYNC_INITIALIZED; | |
1113 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 JS |
1114 | |
1115 | return 0; | |
1116 | } | |
1117 | ||
1118 | static int block_til_ready(struct tty_struct *tty, struct file *filp, struct isi_port *port) | |
1da177e4 | 1119 | { |
d8d16e47 | 1120 | struct isi_board *card = port->card; |
1da177e4 LT |
1121 | int do_clocal = 0, retval; |
1122 | unsigned long flags; | |
1123 | DECLARE_WAITQUEUE(wait, current); | |
1124 | ||
1125 | /* block if port is in the process of being closed */ | |
1126 | ||
1127 | if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) { | |
d8d16e47 | 1128 | #ifdef ISICOM_DEBUG |
1da177e4 | 1129 | printk(KERN_DEBUG "ISICOM: block_til_ready: close in progress.\n"); |
d8d16e47 | 1130 | #endif |
1da177e4 LT |
1131 | interruptible_sleep_on(&port->close_wait); |
1132 | if (port->flags & ASYNC_HUP_NOTIFY) | |
1133 | return -EAGAIN; | |
1134 | else | |
1135 | return -ERESTARTSYS; | |
1136 | } | |
d8d16e47 | 1137 | |
1da177e4 | 1138 | /* if non-blocking mode is set ... */ |
d8d16e47 | 1139 | |
1da177e4 | 1140 | if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) { |
d8d16e47 | 1141 | #ifdef ISICOM_DEBUG |
1da177e4 | 1142 | printk(KERN_DEBUG "ISICOM: block_til_ready: non-block mode.\n"); |
d8d16e47 | 1143 | #endif |
1da177e4 | 1144 | port->flags |= ASYNC_NORMAL_ACTIVE; |
d8d16e47 JS |
1145 | return 0; |
1146 | } | |
1147 | ||
1da177e4 LT |
1148 | if (C_CLOCAL(tty)) |
1149 | do_clocal = 1; | |
d8d16e47 JS |
1150 | |
1151 | /* block waiting for DCD to be asserted, and while | |
1da177e4 LT |
1152 | callout dev is busy */ |
1153 | retval = 0; | |
1154 | add_wait_queue(&port->open_wait, &wait); | |
1155 | ||
1156 | spin_lock_irqsave(&card->card_lock, flags); | |
1157 | if (!tty_hung_up_p(filp)) | |
1158 | port->count--; | |
1159 | port->blocked_open++; | |
1160 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1161 | |
1da177e4 LT |
1162 | while (1) { |
1163 | raise_dtr_rts(port); | |
1164 | ||
1165 | set_current_state(TASK_INTERRUPTIBLE); | |
d8d16e47 | 1166 | if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) { |
1da177e4 LT |
1167 | if (port->flags & ASYNC_HUP_NOTIFY) |
1168 | retval = -EAGAIN; | |
1169 | else | |
1170 | retval = -ERESTARTSYS; | |
1171 | break; | |
d8d16e47 | 1172 | } |
1da177e4 | 1173 | if (!(port->flags & ASYNC_CLOSING) && |
d8d16e47 | 1174 | (do_clocal || (port->status & ISI_DCD))) { |
1da177e4 | 1175 | break; |
d8d16e47 | 1176 | } |
1da177e4 LT |
1177 | if (signal_pending(current)) { |
1178 | retval = -ERESTARTSYS; | |
1179 | break; | |
1180 | } | |
d8d16e47 | 1181 | schedule(); |
1da177e4 LT |
1182 | } |
1183 | set_current_state(TASK_RUNNING); | |
1184 | remove_wait_queue(&port->open_wait, &wait); | |
1185 | spin_lock_irqsave(&card->card_lock, flags); | |
1186 | if (!tty_hung_up_p(filp)) | |
1187 | port->count++; | |
1188 | port->blocked_open--; | |
1189 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1190 | if (retval) | |
1191 | return retval; | |
1192 | port->flags |= ASYNC_NORMAL_ACTIVE; | |
1193 | return 0; | |
1194 | } | |
d8d16e47 JS |
1195 | |
1196 | static int isicom_open(struct tty_struct *tty, struct file *filp) | |
1da177e4 | 1197 | { |
d8d16e47 JS |
1198 | struct isi_port *port; |
1199 | struct isi_board *card; | |
1da177e4 LT |
1200 | unsigned int line, board; |
1201 | int error; | |
1202 | ||
1203 | line = tty->index; | |
1204 | if (line < 0 || line > PORT_COUNT-1) | |
1205 | return -ENODEV; | |
1206 | board = BOARD(line); | |
1207 | card = &isi_card[board]; | |
d8d16e47 | 1208 | |
1da177e4 LT |
1209 | if (!(card->status & FIRMWARE_LOADED)) |
1210 | return -ENODEV; | |
d8d16e47 | 1211 | |
1da177e4 LT |
1212 | /* open on a port greater than the port count for the card !!! */ |
1213 | if (line > ((board * 16) + card->port_count - 1)) | |
1214 | return -ENODEV; | |
1215 | ||
d8d16e47 | 1216 | port = &isi_ports[line]; |
1da177e4 LT |
1217 | if (isicom_paranoia_check(port, tty->name, "isicom_open")) |
1218 | return -ENODEV; | |
d8d16e47 JS |
1219 | |
1220 | isicom_setup_board(card); | |
1221 | ||
1da177e4 LT |
1222 | port->count++; |
1223 | tty->driver_data = port; | |
1224 | port->tty = tty; | |
1225 | if ((error = isicom_setup_port(port))!=0) | |
1226 | return error; | |
1227 | if ((error = block_til_ready(tty, filp, port))!=0) | |
1228 | return error; | |
1229 | ||
d8d16e47 | 1230 | return 0; |
1da177e4 | 1231 | } |
d8d16e47 | 1232 | |
1da177e4 LT |
1233 | /* close et all */ |
1234 | ||
d8d16e47 | 1235 | static inline void isicom_shutdown_board(struct isi_board *bp) |
1da177e4 LT |
1236 | { |
1237 | unsigned long flags; | |
1238 | ||
1239 | spin_lock_irqsave(&bp->card_lock, flags); | |
1240 | if (bp->status & BOARD_ACTIVE) { | |
1241 | bp->status &= ~BOARD_ACTIVE; | |
1242 | } | |
1243 | spin_unlock_irqrestore(&bp->card_lock, flags); | |
1244 | } | |
1245 | ||
d8d16e47 | 1246 | static void isicom_shutdown_port(struct isi_port *port) |
1da177e4 | 1247 | { |
d8d16e47 JS |
1248 | struct isi_board *card = port->card; |
1249 | struct tty_struct *tty; | |
1da177e4 | 1250 | unsigned long flags; |
d8d16e47 | 1251 | |
1da177e4 LT |
1252 | tty = port->tty; |
1253 | ||
d8d16e47 | 1254 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 LT |
1255 | if (!(port->flags & ASYNC_INITIALIZED)) { |
1256 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1257 | return; | |
1258 | } | |
1259 | if (port->xmit_buf) { | |
1260 | free_page((unsigned long) port->xmit_buf); | |
1261 | port->xmit_buf = NULL; | |
d8d16e47 | 1262 | } |
1da177e4 LT |
1263 | port->flags &= ~ASYNC_INITIALIZED; |
1264 | /* 3rd October 2000 : Vinayak P Risbud */ | |
1265 | port->tty = NULL; | |
1266 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1267 | |
1da177e4 LT |
1268 | /*Fix done by Anil .S on 30-04-2001 |
1269 | remote login through isi port has dtr toggle problem | |
1270 | due to which the carrier drops before the password prompt | |
d8d16e47 | 1271 | appears on the remote end. Now we drop the dtr only if the |
1da177e4 | 1272 | HUPCL(Hangup on close) flag is set for the tty*/ |
d8d16e47 JS |
1273 | |
1274 | if (C_HUPCL(tty)) | |
1da177e4 LT |
1275 | /* drop dtr on this port */ |
1276 | drop_dtr(port); | |
d8d16e47 JS |
1277 | |
1278 | /* any other port uninits */ | |
1da177e4 LT |
1279 | if (tty) |
1280 | set_bit(TTY_IO_ERROR, &tty->flags); | |
d8d16e47 | 1281 | |
1da177e4 LT |
1282 | if (--card->count < 0) { |
1283 | printk(KERN_DEBUG "ISICOM: isicom_shutdown_port: bad board(0x%x) count %d.\n", | |
1284 | card->base, card->count); | |
d8d16e47 | 1285 | card->count = 0; |
1da177e4 | 1286 | } |
d8d16e47 | 1287 | |
1da177e4 | 1288 | /* last port was closed , shutdown that boad too */ |
d8d16e47 | 1289 | if (C_HUPCL(tty)) { |
1da177e4 LT |
1290 | if (!card->count) |
1291 | isicom_shutdown_board(card); | |
1292 | } | |
1293 | } | |
1294 | ||
d8d16e47 | 1295 | static void isicom_close(struct tty_struct *tty, struct file *filp) |
1da177e4 | 1296 | { |
d8d16e47 JS |
1297 | struct isi_port *port = (struct isi_port *) tty->driver_data; |
1298 | struct isi_board *card = port->card; | |
1da177e4 | 1299 | unsigned long flags; |
d8d16e47 | 1300 | |
1da177e4 LT |
1301 | if (!port) |
1302 | return; | |
1303 | if (isicom_paranoia_check(port, tty->name, "isicom_close")) | |
1304 | return; | |
d8d16e47 JS |
1305 | |
1306 | #ifdef ISICOM_DEBUG | |
1da177e4 | 1307 | printk(KERN_DEBUG "ISICOM: Close start!!!.\n"); |
d8d16e47 JS |
1308 | #endif |
1309 | ||
1da177e4 LT |
1310 | spin_lock_irqsave(&card->card_lock, flags); |
1311 | if (tty_hung_up_p(filp)) { | |
1312 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1313 | return; | |
1314 | } | |
d8d16e47 | 1315 | |
1da177e4 LT |
1316 | if (tty->count == 1 && port->count != 1) { |
1317 | printk(KERN_WARNING "ISICOM:(0x%x) isicom_close: bad port count" | |
1318 | "tty->count = 1 port count = %d.\n", | |
1319 | card->base, port->count); | |
1320 | port->count = 1; | |
1321 | } | |
1322 | if (--port->count < 0) { | |
1323 | printk(KERN_WARNING "ISICOM:(0x%x) isicom_close: bad port count for" | |
d8d16e47 | 1324 | "channel%d = %d", card->base, port->channel, |
1da177e4 | 1325 | port->count); |
d8d16e47 | 1326 | port->count = 0; |
1da177e4 | 1327 | } |
d8d16e47 | 1328 | |
1da177e4 LT |
1329 | if (port->count) { |
1330 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1331 | return; | |
d8d16e47 | 1332 | } |
1da177e4 LT |
1333 | port->flags |= ASYNC_CLOSING; |
1334 | tty->closing = 1; | |
1335 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1336 | |
1da177e4 LT |
1337 | if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE) |
1338 | tty_wait_until_sent(tty, port->closing_wait); | |
d8d16e47 | 1339 | /* indicate to the card that no more data can be received |
1da177e4 LT |
1340 | on this port */ |
1341 | spin_lock_irqsave(&card->card_lock, flags); | |
d8d16e47 | 1342 | if (port->flags & ASYNC_INITIALIZED) { |
1da177e4 LT |
1343 | card->port_status &= ~(1 << port->channel); |
1344 | outw(card->port_status, card->base + 0x02); | |
d8d16e47 | 1345 | } |
1da177e4 LT |
1346 | isicom_shutdown_port(port); |
1347 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1348 | |
1da177e4 LT |
1349 | if (tty->driver->flush_buffer) |
1350 | tty->driver->flush_buffer(tty); | |
1351 | tty_ldisc_flush(tty); | |
1352 | ||
1353 | spin_lock_irqsave(&card->card_lock, flags); | |
1354 | tty->closing = 0; | |
1355 | ||
1356 | if (port->blocked_open) { | |
1357 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1358 | if (port->close_delay) { | |
d8d16e47 | 1359 | #ifdef ISICOM_DEBUG |
1da177e4 | 1360 | printk(KERN_DEBUG "ISICOM: scheduling until time out.\n"); |
d8d16e47 | 1361 | #endif |
1da177e4 LT |
1362 | msleep_interruptible(jiffies_to_msecs(port->close_delay)); |
1363 | } | |
1364 | spin_lock_irqsave(&card->card_lock, flags); | |
1365 | wake_up_interruptible(&port->open_wait); | |
d8d16e47 | 1366 | } |
1da177e4 LT |
1367 | port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); |
1368 | wake_up_interruptible(&port->close_wait); | |
1369 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1370 | } | |
1371 | ||
1372 | /* write et all */ | |
d8d16e47 JS |
1373 | static int isicom_write(struct tty_struct *tty, const unsigned char *buf, |
1374 | int count) | |
1da177e4 | 1375 | { |
d8d16e47 JS |
1376 | struct isi_port *port = (struct isi_port *) tty->driver_data; |
1377 | struct isi_board *card = port->card; | |
1da177e4 LT |
1378 | unsigned long flags; |
1379 | int cnt, total = 0; | |
1380 | ||
1381 | if (isicom_paranoia_check(port, tty->name, "isicom_write")) | |
1382 | return 0; | |
d8d16e47 | 1383 | |
1da177e4 LT |
1384 | if (!tty || !port->xmit_buf || !tmp_buf) |
1385 | return 0; | |
d8d16e47 | 1386 | |
1da177e4 | 1387 | spin_lock_irqsave(&card->card_lock, flags); |
d8d16e47 JS |
1388 | |
1389 | while(1) { | |
1da177e4 | 1390 | cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1, |
d8d16e47 JS |
1391 | SERIAL_XMIT_SIZE - port->xmit_head)); |
1392 | if (cnt <= 0) | |
1da177e4 | 1393 | break; |
d8d16e47 | 1394 | |
1da177e4 LT |
1395 | memcpy(port->xmit_buf + port->xmit_head, buf, cnt); |
1396 | port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE - 1); | |
1397 | port->xmit_cnt += cnt; | |
1398 | buf += cnt; | |
1399 | count -= cnt; | |
1400 | total += cnt; | |
d8d16e47 | 1401 | } |
1da177e4 LT |
1402 | if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
1403 | port->status |= ISI_TXOK; | |
1404 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1405 | return total; |
1da177e4 LT |
1406 | } |
1407 | ||
1408 | /* put_char et all */ | |
d8d16e47 | 1409 | static void isicom_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1410 | { |
d8d16e47 JS |
1411 | struct isi_port *port = (struct isi_port *) tty->driver_data; |
1412 | struct isi_board *card = port->card; | |
1da177e4 | 1413 | unsigned long flags; |
d8d16e47 | 1414 | |
1da177e4 LT |
1415 | if (isicom_paranoia_check(port, tty->name, "isicom_put_char")) |
1416 | return; | |
d8d16e47 | 1417 | |
1da177e4 LT |
1418 | if (!tty || !port->xmit_buf) |
1419 | return; | |
1420 | ||
1421 | spin_lock_irqsave(&card->card_lock, flags); | |
1422 | if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { | |
1423 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1424 | return; | |
1425 | } | |
d8d16e47 | 1426 | |
1da177e4 LT |
1427 | port->xmit_buf[port->xmit_head++] = ch; |
1428 | port->xmit_head &= (SERIAL_XMIT_SIZE - 1); | |
1429 | port->xmit_cnt++; | |
1430 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1431 | } | |
1432 | ||
1433 | /* flush_chars et all */ | |
d8d16e47 | 1434 | static void isicom_flush_chars(struct tty_struct *tty) |
1da177e4 | 1435 | { |
d8d16e47 JS |
1436 | struct isi_port *port = (struct isi_port *) tty->driver_data; |
1437 | ||
1da177e4 LT |
1438 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars")) |
1439 | return; | |
d8d16e47 | 1440 | |
1da177e4 LT |
1441 | if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || !port->xmit_buf) |
1442 | return; | |
d8d16e47 | 1443 | |
1da177e4 LT |
1444 | /* this tells the transmitter to consider this port for |
1445 | data output to the card ... that's the best we can do. */ | |
d8d16e47 | 1446 | port->status |= ISI_TXOK; |
1da177e4 LT |
1447 | } |
1448 | ||
1449 | /* write_room et all */ | |
d8d16e47 | 1450 | static int isicom_write_room(struct tty_struct *tty) |
1da177e4 | 1451 | { |
d8d16e47 | 1452 | struct isi_port *port = (struct isi_port *) tty->driver_data; |
1da177e4 LT |
1453 | int free; |
1454 | ||
1455 | if (isicom_paranoia_check(port, tty->name, "isicom_write_room")) | |
1456 | return 0; | |
d8d16e47 | 1457 | |
1da177e4 LT |
1458 | free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; |
1459 | if (free < 0) | |
1460 | free = 0; | |
1461 | return free; | |
1462 | } | |
1463 | ||
1464 | /* chars_in_buffer et all */ | |
d8d16e47 | 1465 | static int isicom_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1466 | { |
d8d16e47 | 1467 | struct isi_port *port = (struct isi_port *) tty->driver_data; |
1da177e4 LT |
1468 | if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer")) |
1469 | return 0; | |
1470 | return port->xmit_cnt; | |
1471 | } | |
1472 | ||
1473 | /* ioctl et all */ | |
d8d16e47 | 1474 | static inline void isicom_send_break(struct isi_port *port, unsigned long length) |
1da177e4 | 1475 | { |
d8d16e47 JS |
1476 | struct isi_board *card = port->card; |
1477 | unsigned short base = card->base; | |
1478 | ||
1479 | if (!lock_card(card)) | |
1da177e4 | 1480 | return; |
d8d16e47 | 1481 | |
1da177e4 LT |
1482 | outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base); |
1483 | outw((length & 0xff) << 8 | 0x00, base); | |
1484 | outw((length & 0xff00), base); | |
1485 | InterruptTheCard(base); | |
1486 | ||
1487 | unlock_card(card); | |
1488 | } | |
1489 | ||
1490 | static int isicom_tiocmget(struct tty_struct *tty, struct file *file) | |
1491 | { | |
d8d16e47 | 1492 | struct isi_port *port = (struct isi_port *) tty->driver_data; |
1da177e4 LT |
1493 | /* just send the port status */ |
1494 | unsigned short status = port->status; | |
1495 | ||
1496 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) | |
1497 | return -ENODEV; | |
d8d16e47 | 1498 | |
1da177e4 LT |
1499 | return ((status & ISI_RTS) ? TIOCM_RTS : 0) | |
1500 | ((status & ISI_DTR) ? TIOCM_DTR : 0) | | |
1501 | ((status & ISI_DCD) ? TIOCM_CAR : 0) | | |
1502 | ((status & ISI_DSR) ? TIOCM_DSR : 0) | | |
1503 | ((status & ISI_CTS) ? TIOCM_CTS : 0) | | |
1504 | ((status & ISI_RI ) ? TIOCM_RI : 0); | |
1505 | } | |
1506 | ||
1507 | static int isicom_tiocmset(struct tty_struct *tty, struct file *file, | |
d8d16e47 | 1508 | unsigned int set, unsigned int clear) |
1da177e4 | 1509 | { |
d8d16e47 JS |
1510 | struct isi_port *port = (struct isi_port *) tty->driver_data; |
1511 | ||
1da177e4 LT |
1512 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
1513 | return -ENODEV; | |
d8d16e47 | 1514 | |
1da177e4 LT |
1515 | if (set & TIOCM_RTS) |
1516 | raise_rts(port); | |
1517 | if (set & TIOCM_DTR) | |
1518 | raise_dtr(port); | |
1519 | ||
1520 | if (clear & TIOCM_RTS) | |
1521 | drop_rts(port); | |
1522 | if (clear & TIOCM_DTR) | |
1523 | drop_dtr(port); | |
1524 | ||
1525 | return 0; | |
d8d16e47 | 1526 | } |
1da177e4 | 1527 | |
d8d16e47 JS |
1528 | static int isicom_set_serial_info(struct isi_port *port, |
1529 | struct serial_struct __user *info) | |
1da177e4 LT |
1530 | { |
1531 | struct serial_struct newinfo; | |
1532 | int reconfig_port; | |
1533 | ||
d8d16e47 | 1534 | if (copy_from_user(&newinfo, info, sizeof(newinfo))) |
1da177e4 | 1535 | return -EFAULT; |
d8d16e47 JS |
1536 | |
1537 | reconfig_port = ((port->flags & ASYNC_SPD_MASK) != | |
1538 | (newinfo.flags & ASYNC_SPD_MASK)); | |
1539 | ||
1da177e4 LT |
1540 | if (!capable(CAP_SYS_ADMIN)) { |
1541 | if ((newinfo.close_delay != port->close_delay) || | |
d8d16e47 JS |
1542 | (newinfo.closing_wait != port->closing_wait) || |
1543 | ((newinfo.flags & ~ASYNC_USR_MASK) != | |
1544 | (port->flags & ~ASYNC_USR_MASK))) | |
1da177e4 LT |
1545 | return -EPERM; |
1546 | port->flags = ((port->flags & ~ ASYNC_USR_MASK) | | |
1547 | (newinfo.flags & ASYNC_USR_MASK)); | |
d8d16e47 | 1548 | } |
1da177e4 LT |
1549 | else { |
1550 | port->close_delay = newinfo.close_delay; | |
d8d16e47 JS |
1551 | port->closing_wait = newinfo.closing_wait; |
1552 | port->flags = ((port->flags & ~ASYNC_FLAGS) | | |
1da177e4 LT |
1553 | (newinfo.flags & ASYNC_FLAGS)); |
1554 | } | |
1555 | if (reconfig_port) { | |
1556 | isicom_config_port(port); | |
1557 | } | |
d8d16e47 JS |
1558 | return 0; |
1559 | } | |
1da177e4 | 1560 | |
d8d16e47 JS |
1561 | static int isicom_get_serial_info(struct isi_port *port, |
1562 | struct serial_struct __user *info) | |
1da177e4 LT |
1563 | { |
1564 | struct serial_struct out_info; | |
d8d16e47 | 1565 | |
1da177e4 LT |
1566 | memset(&out_info, 0, sizeof(out_info)); |
1567 | /* out_info.type = ? */ | |
1568 | out_info.line = port - isi_ports; | |
1569 | out_info.port = port->card->base; | |
1570 | out_info.irq = port->card->irq; | |
1571 | out_info.flags = port->flags; | |
1572 | /* out_info.baud_base = ? */ | |
1573 | out_info.close_delay = port->close_delay; | |
1574 | out_info.closing_wait = port->closing_wait; | |
d8d16e47 | 1575 | if (copy_to_user(info, &out_info, sizeof(out_info))) |
1da177e4 LT |
1576 | return -EFAULT; |
1577 | return 0; | |
d8d16e47 | 1578 | } |
1da177e4 | 1579 | |
d8d16e47 JS |
1580 | static int isicom_ioctl(struct tty_struct *tty, struct file *filp, |
1581 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 1582 | { |
d8d16e47 | 1583 | struct isi_port *port = (struct isi_port *) tty->driver_data; |
1da177e4 LT |
1584 | void __user *argp = (void __user *)arg; |
1585 | int retval; | |
1586 | ||
1587 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) | |
1588 | return -ENODEV; | |
1589 | ||
1590 | switch(cmd) { | |
d8d16e47 JS |
1591 | case TCSBRK: |
1592 | retval = tty_check_change(tty); | |
1593 | if (retval) | |
1594 | return retval; | |
1595 | tty_wait_until_sent(tty, 0); | |
1596 | if (!arg) | |
1597 | isicom_send_break(port, HZ/4); | |
1598 | return 0; | |
1599 | ||
1600 | case TCSBRKP: | |
1601 | retval = tty_check_change(tty); | |
1602 | if (retval) | |
1603 | return retval; | |
1604 | tty_wait_until_sent(tty, 0); | |
1605 | isicom_send_break(port, arg ? arg * (HZ/10) : HZ/4); | |
1606 | return 0; | |
1607 | ||
1608 | case TIOCGSOFTCAR: | |
1609 | return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp); | |
1610 | ||
1611 | case TIOCSSOFTCAR: | |
1612 | if (get_user(arg, (unsigned long __user *) argp)) | |
1613 | return -EFAULT; | |
1614 | tty->termios->c_cflag = | |
1615 | ((tty->termios->c_cflag & ~CLOCAL) | | |
1616 | (arg ? CLOCAL : 0)); | |
1617 | return 0; | |
1618 | ||
1619 | case TIOCGSERIAL: | |
1620 | return isicom_get_serial_info(port, argp); | |
1621 | ||
1622 | case TIOCSSERIAL: | |
1623 | return isicom_set_serial_info(port, argp); | |
1624 | ||
1625 | default: | |
1626 | return -ENOIOCTLCMD; | |
1da177e4 LT |
1627 | } |
1628 | return 0; | |
1629 | } | |
1630 | ||
1631 | /* set_termios et all */ | |
d8d16e47 JS |
1632 | static void isicom_set_termios(struct tty_struct *tty, |
1633 | struct termios *old_termios) | |
1da177e4 | 1634 | { |
d8d16e47 JS |
1635 | struct isi_port *port = (struct isi_port *) tty->driver_data; |
1636 | ||
1da177e4 LT |
1637 | if (isicom_paranoia_check(port, tty->name, "isicom_set_termios")) |
1638 | return; | |
d8d16e47 | 1639 | |
1da177e4 | 1640 | if (tty->termios->c_cflag == old_termios->c_cflag && |
d8d16e47 | 1641 | tty->termios->c_iflag == old_termios->c_iflag) |
1da177e4 | 1642 | return; |
d8d16e47 | 1643 | |
1da177e4 | 1644 | isicom_config_port(port); |
d8d16e47 | 1645 | |
1da177e4 | 1646 | if ((old_termios->c_cflag & CRTSCTS) && |
d8d16e47 | 1647 | !(tty->termios->c_cflag & CRTSCTS)) { |
1da177e4 | 1648 | tty->hw_stopped = 0; |
d8d16e47 JS |
1649 | isicom_start(tty); |
1650 | } | |
1da177e4 LT |
1651 | } |
1652 | ||
1653 | /* throttle et all */ | |
d8d16e47 | 1654 | static void isicom_throttle(struct tty_struct *tty) |
1da177e4 | 1655 | { |
d8d16e47 JS |
1656 | struct isi_port *port = (struct isi_port *) tty->driver_data; |
1657 | struct isi_board *card = port->card; | |
1658 | ||
1da177e4 LT |
1659 | if (isicom_paranoia_check(port, tty->name, "isicom_throttle")) |
1660 | return; | |
d8d16e47 | 1661 | |
1da177e4 LT |
1662 | /* tell the card that this port cannot handle any more data for now */ |
1663 | card->port_status &= ~(1 << port->channel); | |
1664 | outw(card->port_status, card->base + 0x02); | |
1665 | } | |
1666 | ||
1667 | /* unthrottle et all */ | |
d8d16e47 | 1668 | static void isicom_unthrottle(struct tty_struct *tty) |
1da177e4 | 1669 | { |
d8d16e47 JS |
1670 | struct isi_port *port = (struct isi_port *) tty->driver_data; |
1671 | struct isi_board *card = port->card; | |
1672 | ||
1da177e4 LT |
1673 | if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle")) |
1674 | return; | |
d8d16e47 | 1675 | |
1da177e4 LT |
1676 | /* tell the card that this port is ready to accept more data */ |
1677 | card->port_status |= (1 << port->channel); | |
1678 | outw(card->port_status, card->base + 0x02); | |
1679 | } | |
1680 | ||
1681 | /* stop et all */ | |
d8d16e47 | 1682 | static void isicom_stop(struct tty_struct *tty) |
1da177e4 | 1683 | { |
d8d16e47 | 1684 | struct isi_port *port = (struct isi_port *) tty->driver_data; |
1da177e4 LT |
1685 | |
1686 | if (isicom_paranoia_check(port, tty->name, "isicom_stop")) | |
1687 | return; | |
d8d16e47 | 1688 | |
1da177e4 LT |
1689 | /* this tells the transmitter not to consider this port for |
1690 | data output to the card. */ | |
1691 | port->status &= ~ISI_TXOK; | |
1692 | } | |
1693 | ||
1694 | /* start et all */ | |
d8d16e47 | 1695 | static void isicom_start(struct tty_struct *tty) |
1da177e4 | 1696 | { |
d8d16e47 JS |
1697 | struct isi_port *port = (struct isi_port *) tty->driver_data; |
1698 | ||
1da177e4 LT |
1699 | if (isicom_paranoia_check(port, tty->name, "isicom_start")) |
1700 | return; | |
d8d16e47 | 1701 | |
1da177e4 LT |
1702 | /* this tells the transmitter to consider this port for |
1703 | data output to the card. */ | |
1704 | port->status |= ISI_TXOK; | |
1705 | } | |
1706 | ||
1707 | /* hangup et all */ | |
d8d16e47 | 1708 | static void do_isicom_hangup(void *data) |
1da177e4 | 1709 | { |
d8d16e47 JS |
1710 | struct isi_port *port = (struct isi_port *) data; |
1711 | struct tty_struct *tty; | |
1712 | ||
1da177e4 LT |
1713 | tty = port->tty; |
1714 | if (tty) | |
1715 | tty_hangup(tty); | |
1716 | } | |
1717 | ||
d8d16e47 | 1718 | static void isicom_hangup(struct tty_struct *tty) |
1da177e4 | 1719 | { |
d8d16e47 JS |
1720 | struct isi_port *port = (struct isi_port *) tty->driver_data; |
1721 | ||
1da177e4 LT |
1722 | if (isicom_paranoia_check(port, tty->name, "isicom_hangup")) |
1723 | return; | |
d8d16e47 | 1724 | |
1da177e4 LT |
1725 | isicom_shutdown_port(port); |
1726 | port->count = 0; | |
1727 | port->flags &= ~ASYNC_NORMAL_ACTIVE; | |
1728 | port->tty = NULL; | |
1729 | wake_up_interruptible(&port->open_wait); | |
1730 | } | |
1731 | ||
1732 | /* flush_buffer et all */ | |
d8d16e47 | 1733 | static void isicom_flush_buffer(struct tty_struct *tty) |
1da177e4 | 1734 | { |
d8d16e47 JS |
1735 | struct isi_port *port = (struct isi_port *) tty->driver_data; |
1736 | struct isi_board *card = port->card; | |
1da177e4 | 1737 | unsigned long flags; |
d8d16e47 | 1738 | |
1da177e4 LT |
1739 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer")) |
1740 | return; | |
d8d16e47 | 1741 | |
1da177e4 LT |
1742 | spin_lock_irqsave(&card->card_lock, flags); |
1743 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; | |
1744 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1745 | |
1da177e4 LT |
1746 | wake_up_interruptible(&tty->write_wait); |
1747 | tty_wakeup(tty); | |
1748 | } | |
1749 | ||
1750 | ||
4b849727 | 1751 | static int __devinit register_ioregion(void) |
1da177e4 LT |
1752 | { |
1753 | int count, done=0; | |
1754 | for (count=0; count < BOARD_COUNT; count++ ) { | |
1755 | if (isi_card[count].base) | |
1756 | if (!request_region(isi_card[count].base,16,ISICOM_NAME)) { | |
1757 | printk(KERN_DEBUG "ISICOM: I/O Region 0x%x-0x%x is busy. Card%d will be disabled.\n", | |
1758 | isi_card[count].base,isi_card[count].base+15,count+1); | |
1759 | isi_card[count].base=0; | |
1760 | done++; | |
1761 | } | |
1762 | } | |
1763 | return done; | |
1764 | } | |
1765 | ||
4b849727 | 1766 | static void unregister_ioregion(void) |
1da177e4 LT |
1767 | { |
1768 | int count; | |
d8d16e47 | 1769 | for (count=0; count < BOARD_COUNT; count++ ) |
1da177e4 LT |
1770 | if (isi_card[count].base) { |
1771 | release_region(isi_card[count].base,16); | |
d8d16e47 | 1772 | #ifdef ISICOM_DEBUG |
1da177e4 | 1773 | printk(KERN_DEBUG "ISICOM: I/O Region 0x%x-0x%x released for Card%d.\n",isi_card[count].base,isi_card[count].base+15,count+1); |
d8d16e47 | 1774 | #endif |
1da177e4 LT |
1775 | } |
1776 | } | |
1777 | ||
1778 | static struct tty_operations isicom_ops = { | |
d8d16e47 JS |
1779 | .open = isicom_open, |
1780 | .close = isicom_close, | |
1781 | .write = isicom_write, | |
1782 | .put_char = isicom_put_char, | |
1783 | .flush_chars = isicom_flush_chars, | |
1784 | .write_room = isicom_write_room, | |
1da177e4 | 1785 | .chars_in_buffer = isicom_chars_in_buffer, |
d8d16e47 JS |
1786 | .ioctl = isicom_ioctl, |
1787 | .set_termios = isicom_set_termios, | |
1788 | .throttle = isicom_throttle, | |
1789 | .unthrottle = isicom_unthrottle, | |
1790 | .stop = isicom_stop, | |
1791 | .start = isicom_start, | |
1792 | .hangup = isicom_hangup, | |
1793 | .flush_buffer = isicom_flush_buffer, | |
1794 | .tiocmget = isicom_tiocmget, | |
1795 | .tiocmset = isicom_tiocmset, | |
1da177e4 LT |
1796 | }; |
1797 | ||
4b849727 | 1798 | static int __devinit register_drivers(void) |
1da177e4 LT |
1799 | { |
1800 | int error; | |
1801 | ||
1802 | /* tty driver structure initialization */ | |
1803 | isicom_normal = alloc_tty_driver(PORT_COUNT); | |
1804 | if (!isicom_normal) | |
1805 | return -ENOMEM; | |
1806 | ||
1807 | isicom_normal->owner = THIS_MODULE; | |
1808 | isicom_normal->name = "ttyM"; | |
1809 | isicom_normal->devfs_name = "isicom/"; | |
1810 | isicom_normal->major = ISICOM_NMAJOR; | |
1811 | isicom_normal->minor_start = 0; | |
1812 | isicom_normal->type = TTY_DRIVER_TYPE_SERIAL; | |
1813 | isicom_normal->subtype = SERIAL_TYPE_NORMAL; | |
1814 | isicom_normal->init_termios = tty_std_termios; | |
d8d16e47 | 1815 | isicom_normal->init_termios.c_cflag = |
1da177e4 LT |
1816 | B9600 | CS8 | CREAD | HUPCL |CLOCAL; |
1817 | isicom_normal->flags = TTY_DRIVER_REAL_RAW; | |
1818 | tty_set_operations(isicom_normal, &isicom_ops); | |
d8d16e47 | 1819 | |
1da177e4 LT |
1820 | if ((error=tty_register_driver(isicom_normal))!=0) { |
1821 | printk(KERN_DEBUG "ISICOM: Couldn't register the dialin driver, error=%d\n", | |
1822 | error); | |
1823 | put_tty_driver(isicom_normal); | |
1824 | return error; | |
1825 | } | |
1826 | return 0; | |
1827 | } | |
1828 | ||
4b849727 | 1829 | static void unregister_drivers(void) |
1da177e4 LT |
1830 | { |
1831 | int error = tty_unregister_driver(isicom_normal); | |
1832 | if (error) | |
1833 | printk(KERN_DEBUG "ISICOM: couldn't unregister normal driver error=%d.\n",error); | |
1834 | put_tty_driver(isicom_normal); | |
1835 | } | |
1836 | ||
4b849727 | 1837 | static int __devinit register_isr(void) |
1da177e4 LT |
1838 | { |
1839 | int count, done=0; | |
1840 | unsigned long irqflags; | |
1841 | ||
1842 | for (count=0; count < BOARD_COUNT; count++ ) { | |
1843 | if (isi_card[count].base) { | |
d8d16e47 JS |
1844 | irqflags = (isi_card[count].isa == YES) ? |
1845 | SA_INTERRUPT : | |
1da177e4 LT |
1846 | (SA_INTERRUPT | SA_SHIRQ); |
1847 | ||
d8d16e47 JS |
1848 | if (request_irq(isi_card[count].irq, |
1849 | isicom_interrupt, | |
1850 | irqflags, | |
1da177e4 LT |
1851 | ISICOM_NAME, &isi_card[count])) { |
1852 | ||
1853 | printk(KERN_WARNING "ISICOM: Could not" | |
1854 | " install handler at Irq %d." | |
1855 | " Card%d will be disabled.\n", | |
1856 | isi_card[count].irq, count+1); | |
1857 | ||
1858 | release_region(isi_card[count].base,16); | |
1859 | isi_card[count].base=0; | |
1860 | } | |
1861 | else | |
1862 | done++; | |
d8d16e47 | 1863 | } |
1da177e4 LT |
1864 | } |
1865 | return done; | |
1866 | } | |
1867 | ||
1868 | static void __exit unregister_isr(void) | |
1869 | { | |
1870 | int count; | |
1871 | ||
1872 | for (count=0; count < BOARD_COUNT; count++ ) { | |
1873 | if (isi_card[count].base) | |
1874 | free_irq(isi_card[count].irq, &isi_card[count]); | |
1875 | } | |
1876 | } | |
1877 | ||
4b849727 | 1878 | static int __devinit isicom_init(void) |
1da177e4 LT |
1879 | { |
1880 | int card, channel, base; | |
d8d16e47 | 1881 | struct isi_port *port; |
1da177e4 | 1882 | unsigned long page; |
d8d16e47 JS |
1883 | |
1884 | if (!tmp_buf) { | |
1da177e4 | 1885 | page = get_zeroed_page(GFP_KERNEL); |
d8d16e47 JS |
1886 | if (!page) { |
1887 | #ifdef ISICOM_DEBUG | |
1888 | printk(KERN_DEBUG "ISICOM: Couldn't allocate page for tmp_buf.\n"); | |
1da177e4 LT |
1889 | #else |
1890 | printk(KERN_ERR "ISICOM: Not enough memory...\n"); | |
d8d16e47 JS |
1891 | #endif |
1892 | return 0; | |
1893 | } | |
1894 | tmp_buf = (unsigned char *) page; | |
1da177e4 | 1895 | } |
d8d16e47 JS |
1896 | |
1897 | if (!register_ioregion()) | |
1da177e4 LT |
1898 | { |
1899 | printk(KERN_ERR "ISICOM: All required I/O space found busy.\n"); | |
1900 | free_page((unsigned long)tmp_buf); | |
1901 | return 0; | |
1902 | } | |
d8d16e47 | 1903 | if (register_drivers()) |
1da177e4 LT |
1904 | { |
1905 | unregister_ioregion(); | |
1906 | free_page((unsigned long)tmp_buf); | |
1907 | return 0; | |
1908 | } | |
d8d16e47 | 1909 | if (!register_isr()) |
1da177e4 LT |
1910 | { |
1911 | unregister_drivers(); | |
1912 | /* ioports already uregistered in register_isr */ | |
1913 | free_page((unsigned long)tmp_buf); | |
d8d16e47 | 1914 | return 0; |
1da177e4 | 1915 | } |
d8d16e47 | 1916 | |
1da177e4 LT |
1917 | memset(isi_ports, 0, sizeof(isi_ports)); |
1918 | for (card = 0; card < BOARD_COUNT; card++) { | |
1919 | port = &isi_ports[card * 16]; | |
1920 | isi_card[card].ports = port; | |
1921 | spin_lock_init(&isi_card[card].card_lock); | |
1922 | base = isi_card[card].base; | |
1923 | for (channel = 0; channel < 16; channel++, port++) { | |
1924 | port->magic = ISICOM_MAGIC; | |
1925 | port->card = &isi_card[card]; | |
1926 | port->channel = channel; | |
d8d16e47 JS |
1927 | port->close_delay = 50 * HZ/100; |
1928 | port->closing_wait = 3000 * HZ/100; | |
1929 | INIT_WORK(&port->hangup_tq, do_isicom_hangup, port); | |
1930 | INIT_WORK(&port->bh_tqueue, isicom_bottomhalf, port); | |
1931 | port->status = 0; | |
1932 | init_waitqueue_head(&port->open_wait); | |
1da177e4 LT |
1933 | init_waitqueue_head(&port->close_wait); |
1934 | /* . . . */ | |
d8d16e47 JS |
1935 | } |
1936 | } | |
1937 | ||
1938 | return 1; | |
1da177e4 LT |
1939 | } |
1940 | ||
1941 | /* | |
1942 | * Insmod can set static symbols so keep these static | |
1943 | */ | |
d8d16e47 | 1944 | |
1da177e4 LT |
1945 | static int io[4]; |
1946 | static int irq[4]; | |
1947 | ||
1948 | MODULE_AUTHOR("MultiTech"); | |
1949 | MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech"); | |
1950 | MODULE_LICENSE("GPL"); | |
1951 | module_param_array(io, int, NULL, 0); | |
1952 | MODULE_PARM_DESC(io, "I/O ports for the cards"); | |
1953 | module_param_array(irq, int, NULL, 0); | |
1954 | MODULE_PARM_DESC(irq, "Interrupts for the cards"); | |
1955 | ||
1956 | static int __devinit isicom_setup(void) | |
1957 | { | |
1958 | struct pci_dev *dev = NULL; | |
1959 | int retval, card, idx, count; | |
1960 | unsigned char pciirq; | |
1961 | unsigned int ioaddr; | |
d8d16e47 | 1962 | |
1da177e4 | 1963 | card = 0; |
d8d16e47 | 1964 | for (idx=0; idx < BOARD_COUNT; idx++) { |
1da177e4 LT |
1965 | if (io[idx]) { |
1966 | isi_card[idx].base=io[idx]; | |
1967 | isi_card[idx].irq=irq[idx]; | |
1968 | isi_card[idx].isa=YES; | |
1969 | card++; | |
1970 | } | |
1971 | else { | |
1972 | isi_card[idx].base = 0; | |
1973 | isi_card[idx].irq = 0; | |
1974 | } | |
1975 | } | |
d8d16e47 | 1976 | |
1da177e4 LT |
1977 | for (idx=0 ;idx < card; idx++) { |
1978 | if (!((isi_card[idx].irq==2)||(isi_card[idx].irq==3)|| | |
d8d16e47 JS |
1979 | (isi_card[idx].irq==4)||(isi_card[idx].irq==5)|| |
1980 | (isi_card[idx].irq==7)||(isi_card[idx].irq==10)|| | |
1981 | (isi_card[idx].irq==11)||(isi_card[idx].irq==12)|| | |
1982 | (isi_card[idx].irq==15))) { | |
1983 | ||
1da177e4 LT |
1984 | if (isi_card[idx].base) { |
1985 | printk(KERN_ERR "ISICOM: Irq %d unsupported. Disabling Card%d...\n", | |
1986 | isi_card[idx].irq, idx+1); | |
1987 | isi_card[idx].base=0; | |
1988 | card--; | |
d8d16e47 | 1989 | } |
1da177e4 | 1990 | } |
d8d16e47 JS |
1991 | } |
1992 | ||
1da177e4 LT |
1993 | if (card < BOARD_COUNT) { |
1994 | for (idx=0; idx < DEVID_COUNT; idx++) { | |
1995 | dev = NULL; | |
1996 | for (;;){ | |
1997 | if (!(dev = pci_find_device(VENDOR_ID, isicom_pci_tbl[idx].device, dev))) | |
1998 | break; | |
1999 | if (card >= BOARD_COUNT) | |
2000 | break; | |
d8d16e47 | 2001 | |
1da177e4 LT |
2002 | if (pci_enable_device(dev)) |
2003 | break; | |
2004 | ||
2005 | /* found a PCI ISI card! */ | |
d8d16e47 JS |
2006 | ioaddr = pci_resource_start (dev, 3); |
2007 | /* i.e at offset 0x1c in the | |
2008 | * PCI configuration register | |
2009 | * space. | |
2010 | */ | |
1da177e4 LT |
2011 | pciirq = dev->irq; |
2012 | printk(KERN_INFO "ISI PCI Card(Device ID 0x%x)\n", isicom_pci_tbl[idx].device); | |
2013 | /* | |
2014 | * allot the first empty slot in the array | |
d8d16e47 JS |
2015 | */ |
2016 | for (count=0; count < BOARD_COUNT; count++) { | |
1da177e4 LT |
2017 | if (isi_card[count].base == 0) { |
2018 | isi_card[count].base = ioaddr; | |
2019 | isi_card[count].irq = pciirq; | |
2020 | isi_card[count].isa = NO; | |
2021 | card++; | |
2022 | break; | |
2023 | } | |
2024 | } | |
d8d16e47 | 2025 | } |
1da177e4 LT |
2026 | if (card >= BOARD_COUNT) break; |
2027 | } | |
2028 | } | |
d8d16e47 | 2029 | |
1da177e4 | 2030 | if (!(isi_card[0].base || isi_card[1].base || isi_card[2].base || isi_card[3].base)) { |
d8d16e47 | 2031 | printk(KERN_ERR "ISICOM: No valid card configuration. Driver cannot be initialized...\n"); |
1da177e4 | 2032 | return -EIO; |
d8d16e47 | 2033 | } |
1da177e4 LT |
2034 | |
2035 | retval = misc_register(&isiloader_device); | |
2036 | if (retval < 0) { | |
2037 | printk(KERN_ERR "ISICOM: Unable to register firmware loader driver.\n"); | |
2038 | return retval; | |
2039 | } | |
d8d16e47 | 2040 | |
1da177e4 | 2041 | if (!isicom_init()) { |
d8d16e47 | 2042 | if (misc_deregister(&isiloader_device)) |
1da177e4 LT |
2043 | printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n"); |
2044 | return -EIO; | |
2045 | } | |
d8d16e47 | 2046 | |
1da177e4 LT |
2047 | init_timer(&tx); |
2048 | tx.expires = jiffies + 1; | |
2049 | tx.data = 0; | |
2050 | tx.function = isicom_tx; | |
2051 | re_schedule = 1; | |
2052 | add_timer(&tx); | |
d8d16e47 | 2053 | |
1da177e4 LT |
2054 | return 0; |
2055 | } | |
2056 | ||
2057 | static void __exit isicom_exit(void) | |
2058 | { | |
2059 | re_schedule = 0; | |
2060 | /* FIXME */ | |
2061 | msleep(1000); | |
2062 | unregister_isr(); | |
2063 | unregister_drivers(); | |
d8d16e47 JS |
2064 | unregister_ioregion(); |
2065 | if (tmp_buf) | |
1da177e4 LT |
2066 | free_page((unsigned long)tmp_buf); |
2067 | if (misc_deregister(&isiloader_device)) | |
2068 | printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n"); | |
2069 | } | |
2070 | ||
2071 | module_init(isicom_setup); | |
2072 | module_exit(isicom_exit); |