Commit | Line | Data |
---|---|---|
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; | |
1da177e4 LT |
157 | |
158 | static int ISILoad_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg); | |
159 | ||
160 | static void isicom_tx(unsigned long _data); | |
d8d16e47 | 161 | static void isicom_start(struct tty_struct *tty); |
1da177e4 | 162 | |
d8d16e47 | 163 | static unsigned char *tmp_buf; |
1da177e4 LT |
164 | static DECLARE_MUTEX(tmp_buf_sem); |
165 | ||
166 | /* baud index mappings from linux defns to isi */ | |
167 | ||
168 | static signed char linuxb_to_isib[] = { | |
d8d16e47 | 169 | -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19 |
1da177e4 LT |
170 | }; |
171 | ||
172 | struct isi_board { | |
8070e35c | 173 | unsigned long base; |
1da177e4 LT |
174 | unsigned char irq; |
175 | unsigned char port_count; | |
176 | unsigned short status; | |
177 | unsigned short port_status; /* each bit represents a single port */ | |
178 | unsigned short shift_count; | |
179 | struct isi_port * ports; | |
180 | signed char count; | |
181 | unsigned char isa; | |
182 | spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */ | |
183 | unsigned long flags; | |
184 | }; | |
185 | ||
186 | struct isi_port { | |
187 | unsigned short magic; | |
188 | unsigned int flags; | |
189 | int count; | |
190 | int blocked_open; | |
191 | int close_delay; | |
8070e35c JS |
192 | u16 channel; |
193 | u16 status; | |
194 | u16 closing_wait; | |
1da177e4 LT |
195 | struct isi_board * card; |
196 | struct tty_struct * tty; | |
197 | wait_queue_head_t close_wait; | |
198 | wait_queue_head_t open_wait; | |
199 | struct work_struct hangup_tq; | |
200 | struct work_struct bh_tqueue; | |
201 | unsigned char * xmit_buf; | |
202 | int xmit_head; | |
203 | int xmit_tail; | |
204 | int xmit_cnt; | |
205 | }; | |
206 | ||
207 | static struct isi_board isi_card[BOARD_COUNT]; | |
208 | static struct isi_port isi_ports[PORT_COUNT]; | |
209 | ||
210 | /* | |
211 | * Locking functions for card level locking. We need to own both | |
212 | * the kernel lock for the card and have the card in a position that | |
213 | * it wants to talk. | |
214 | */ | |
d8d16e47 | 215 | |
1da177e4 LT |
216 | static int lock_card(struct isi_board *card) |
217 | { | |
218 | char retries; | |
8070e35c | 219 | unsigned long base = card->base; |
1da177e4 LT |
220 | |
221 | for (retries = 0; retries < 100; retries++) { | |
222 | spin_lock_irqsave(&card->card_lock, card->flags); | |
223 | if (inw(base + 0xe) & 0x1) { | |
d8d16e47 | 224 | return 1; |
1da177e4 LT |
225 | } else { |
226 | spin_unlock_irqrestore(&card->card_lock, card->flags); | |
227 | udelay(1000); /* 1ms */ | |
228 | } | |
229 | } | |
8070e35c | 230 | printk(KERN_WARNING "ISICOM: Failed to lock Card (0x%lx)\n", card->base); |
1da177e4 LT |
231 | return 0; /* Failed to aquire the card! */ |
232 | } | |
233 | ||
234 | static int lock_card_at_interrupt(struct isi_board *card) | |
235 | { | |
236 | unsigned char retries; | |
8070e35c | 237 | unsigned long base = card->base; |
1da177e4 LT |
238 | |
239 | for (retries = 0; retries < 200; retries++) { | |
240 | spin_lock_irqsave(&card->card_lock, card->flags); | |
241 | ||
242 | if (inw(base + 0xe) & 0x1) | |
d8d16e47 | 243 | return 1; |
1da177e4 LT |
244 | else |
245 | spin_unlock_irqrestore(&card->card_lock, card->flags); | |
246 | } | |
247 | /* Failing in interrupt is an acceptable event */ | |
248 | return 0; /* Failed to aquire the card! */ | |
249 | } | |
250 | ||
251 | static void unlock_card(struct isi_board *card) | |
252 | { | |
253 | spin_unlock_irqrestore(&card->card_lock, card->flags); | |
254 | } | |
255 | ||
256 | /* | |
257 | * ISI Card specific ops ... | |
258 | */ | |
d8d16e47 JS |
259 | |
260 | static void raise_dtr(struct isi_port *port) | |
1da177e4 | 261 | { |
d8d16e47 | 262 | struct isi_board *card = port->card; |
8070e35c JS |
263 | unsigned long base = card->base; |
264 | u16 channel = port->channel; | |
1da177e4 LT |
265 | |
266 | if (!lock_card(card)) | |
267 | return; | |
268 | ||
d8d16e47 | 269 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 LT |
270 | outw(0x0504, base); |
271 | InterruptTheCard(base); | |
272 | port->status |= ISI_DTR; | |
273 | unlock_card(card); | |
274 | } | |
275 | ||
d8d16e47 JS |
276 | static inline void drop_dtr(struct isi_port *port) |
277 | { | |
278 | struct isi_board *card = port->card; | |
8070e35c JS |
279 | unsigned long base = card->base; |
280 | u16 channel = port->channel; | |
1da177e4 LT |
281 | |
282 | if (!lock_card(card)) | |
283 | return; | |
284 | ||
d8d16e47 | 285 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 286 | outw(0x0404, base); |
d8d16e47 | 287 | InterruptTheCard(base); |
1da177e4 LT |
288 | port->status &= ~ISI_DTR; |
289 | unlock_card(card); | |
290 | } | |
291 | ||
d8d16e47 | 292 | static inline void raise_rts(struct isi_port *port) |
1da177e4 | 293 | { |
d8d16e47 | 294 | struct isi_board *card = port->card; |
8070e35c JS |
295 | unsigned long base = card->base; |
296 | u16 channel = port->channel; | |
1da177e4 LT |
297 | |
298 | if (!lock_card(card)) | |
299 | return; | |
300 | ||
d8d16e47 | 301 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 302 | outw(0x0a04, base); |
d8d16e47 | 303 | InterruptTheCard(base); |
1da177e4 LT |
304 | port->status |= ISI_RTS; |
305 | unlock_card(card); | |
306 | } | |
d8d16e47 | 307 | static inline void drop_rts(struct isi_port *port) |
1da177e4 | 308 | { |
d8d16e47 | 309 | struct isi_board *card = port->card; |
8070e35c JS |
310 | unsigned long base = card->base; |
311 | u16 channel = port->channel; | |
1da177e4 LT |
312 | |
313 | if (!lock_card(card)) | |
314 | return; | |
315 | ||
d8d16e47 | 316 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 317 | outw(0x0804, base); |
d8d16e47 | 318 | InterruptTheCard(base); |
1da177e4 LT |
319 | port->status &= ~ISI_RTS; |
320 | unlock_card(card); | |
321 | } | |
322 | ||
d8d16e47 | 323 | static inline void raise_dtr_rts(struct isi_port *port) |
1da177e4 | 324 | { |
d8d16e47 | 325 | struct isi_board *card = port->card; |
8070e35c JS |
326 | unsigned long base = card->base; |
327 | u16 channel = port->channel; | |
1da177e4 LT |
328 | |
329 | if (!lock_card(card)) | |
330 | return; | |
331 | ||
d8d16e47 | 332 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 LT |
333 | outw(0x0f04, base); |
334 | InterruptTheCard(base); | |
335 | port->status |= (ISI_DTR | ISI_RTS); | |
336 | unlock_card(card); | |
337 | } | |
338 | ||
d8d16e47 | 339 | static void drop_dtr_rts(struct isi_port *port) |
1da177e4 | 340 | { |
d8d16e47 | 341 | struct isi_board *card = port->card; |
8070e35c JS |
342 | unsigned long base = card->base; |
343 | u16 channel = port->channel; | |
1da177e4 LT |
344 | |
345 | if (!lock_card(card)) | |
346 | return; | |
347 | ||
d8d16e47 | 348 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 349 | outw(0x0c04, base); |
d8d16e47 | 350 | InterruptTheCard(base); |
1da177e4 LT |
351 | port->status &= ~(ISI_RTS | ISI_DTR); |
352 | unlock_card(card); | |
353 | } | |
354 | ||
d8d16e47 | 355 | static inline void kill_queue(struct isi_port *port, short queue) |
1da177e4 | 356 | { |
d8d16e47 | 357 | struct isi_board *card = port->card; |
8070e35c JS |
358 | unsigned long base = card->base; |
359 | u16 channel = port->channel; | |
1da177e4 LT |
360 | |
361 | if (!lock_card(card)) | |
362 | return; | |
363 | ||
d8d16e47 | 364 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 365 | outw((queue << 8) | 0x06, base); |
d8d16e47 | 366 | InterruptTheCard(base); |
1da177e4 LT |
367 | unlock_card(card); |
368 | } | |
369 | ||
370 | ||
d8d16e47 | 371 | /* |
1da177e4 LT |
372 | * Firmware loader driver specific routines. This needs to mostly die |
373 | * and be replaced with request_firmware. | |
374 | */ | |
375 | ||
376 | static struct file_operations ISILoad_fops = { | |
377 | .owner = THIS_MODULE, | |
378 | .ioctl = ISILoad_ioctl, | |
379 | }; | |
380 | ||
381 | static struct miscdevice isiloader_device = { | |
382 | ISILOAD_MISC_MINOR, "isictl", &ISILoad_fops | |
383 | }; | |
384 | ||
d8d16e47 | 385 | |
8070e35c | 386 | static inline int WaitTillCardIsFree(unsigned long base) |
1da177e4 LT |
387 | { |
388 | unsigned long count=0; | |
389 | while( (!(inw(base+0xe) & 0x1)) && (count++ < 6000000)); | |
d8d16e47 | 390 | if (inw(base+0xe)&0x1) |
1da177e4 LT |
391 | return 0; |
392 | else | |
393 | return 1; | |
394 | } | |
395 | ||
396 | static int ISILoad_ioctl(struct inode *inode, struct file *filp, | |
d8d16e47 | 397 | unsigned int cmd, unsigned long arg) |
1da177e4 LT |
398 | { |
399 | unsigned int card, i, j, signature, status, portcount = 0; | |
8070e35c JS |
400 | unsigned long t, base; |
401 | u16 word_count; | |
1da177e4 LT |
402 | bin_frame frame; |
403 | void __user *argp = (void __user *)arg; | |
404 | /* exec_record exec_rec; */ | |
d8d16e47 JS |
405 | |
406 | if (get_user(card, (int __user *)argp)) | |
1da177e4 | 407 | return -EFAULT; |
d8d16e47 JS |
408 | |
409 | if (card < 0 || card >= BOARD_COUNT) | |
1da177e4 | 410 | return -ENXIO; |
d8d16e47 | 411 | |
1da177e4 | 412 | base=isi_card[card].base; |
d8d16e47 JS |
413 | |
414 | if (base==0) | |
1da177e4 | 415 | return -ENXIO; /* disabled or not used */ |
d8d16e47 | 416 | |
1da177e4 | 417 | switch(cmd) { |
d8d16e47 JS |
418 | case MIOCTL_RESET_CARD: |
419 | if (!capable(CAP_SYS_ADMIN)) | |
420 | return -EPERM; | |
8070e35c | 421 | printk(KERN_DEBUG "ISILoad:Resetting Card%d at 0x%lx ",card+1,base); |
d8d16e47 JS |
422 | |
423 | inw(base+0x8); | |
424 | ||
425 | for (t=jiffies+HZ/100;time_before(jiffies, t);); | |
426 | ||
427 | outw(0,base+0x8); /* Reset */ | |
428 | ||
429 | for (j=1;j<=3;j++) { | |
430 | for (t=jiffies+HZ;time_before(jiffies, t);); | |
431 | printk("."); | |
432 | } | |
433 | signature=(inw(base+0x4)) & 0xff; | |
434 | if (isi_card[card].isa) { | |
435 | ||
436 | if (!(inw(base+0xe) & 0x1) || (inw(base+0x2))) { | |
1da177e4 | 437 | #ifdef ISICOM_DEBUG |
d8d16e47 | 438 | printk("\nbase+0x2=0x%x , base+0xe=0x%x",inw(base+0x2),inw(base+0xe)); |
1da177e4 | 439 | #endif |
8070e35c | 440 | printk("\nISILoad:ISA Card%d reset failure (Possible bad I/O Port Address 0x%lx).\n",card+1,base); |
d8d16e47 JS |
441 | return -EIO; |
442 | } | |
443 | } | |
444 | else { | |
445 | portcount = inw(base+0x2); | |
446 | if (!(inw(base+0xe) & 0x1) || ((portcount!=0) && (portcount!=4) && (portcount!=8))) { | |
447 | #ifdef ISICOM_DEBUG | |
448 | printk("\nbase+0x2=0x%x , base+0xe=0x%x",inw(base+0x2),inw(base+0xe)); | |
449 | #endif | |
8070e35c | 450 | printk("\nISILoad:PCI Card%d reset failure (Possible bad I/O Port Address 0x%lx).\n",card+1,base); |
d8d16e47 | 451 | return -EIO; |
1da177e4 | 452 | } |
d8d16e47 JS |
453 | } |
454 | switch(signature) { | |
455 | case 0xa5: | |
456 | case 0xbb: | |
457 | case 0xdd: | |
458 | if (isi_card[card].isa) | |
459 | isi_card[card].port_count = 8; | |
460 | else { | |
461 | if (portcount == 4) | |
462 | isi_card[card].port_count = 4; | |
463 | else | |
464 | isi_card[card].port_count = 8; | |
465 | } | |
466 | isi_card[card].shift_count = 12; | |
467 | break; | |
468 | ||
469 | case 0xcc: isi_card[card].port_count = 16; | |
470 | isi_card[card].shift_count = 11; | |
471 | break; | |
472 | ||
8070e35c | 473 | default: printk("ISILoad:Card%d reset failure (Possible bad I/O Port Address 0x%lx).\n",card+1,base); |
d8d16e47 JS |
474 | #ifdef ISICOM_DEBUG |
475 | printk("Sig=0x%x\n",signature); | |
476 | #endif | |
477 | return -EIO; | |
478 | } | |
479 | printk("-Done\n"); | |
480 | return put_user(signature,(unsigned __user *)argp); | |
481 | ||
1da177e4 LT |
482 | case MIOCTL_LOAD_FIRMWARE: |
483 | if (!capable(CAP_SYS_ADMIN)) | |
484 | return -EPERM; | |
d8d16e47 JS |
485 | |
486 | if (copy_from_user(&frame, argp, sizeof(bin_frame))) | |
1da177e4 | 487 | return -EFAULT; |
d8d16e47 | 488 | |
1da177e4 LT |
489 | if (WaitTillCardIsFree(base)) |
490 | return -EIO; | |
d8d16e47 JS |
491 | |
492 | outw(0xf0,base); /* start upload sequence */ | |
1da177e4 | 493 | outw(0x00,base); |
d8d16e47 JS |
494 | outw((frame.addr), base); /* lsb of adderess */ |
495 | ||
1da177e4 LT |
496 | word_count=(frame.count >> 1) + frame.count % 2; |
497 | outw(word_count, base); | |
498 | InterruptTheCard(base); | |
d8d16e47 JS |
499 | |
500 | for (i=0;i<=0x2f;i++); /* a wee bit of delay */ | |
501 | ||
502 | if (WaitTillCardIsFree(base)) | |
1da177e4 | 503 | return -EIO; |
d8d16e47 | 504 | |
1da177e4 | 505 | if ((status=inw(base+0x4))!=0) { |
d8d16e47 | 506 | printk(KERN_WARNING "ISILoad:Card%d rejected load header:\nAddress:0x%x \nCount:0x%x \nStatus:0x%x \n", |
1da177e4 LT |
507 | card+1, frame.addr, frame.count, status); |
508 | return -EIO; | |
509 | } | |
510 | outsw(base, (void *) frame.bin_data, word_count); | |
d8d16e47 | 511 | |
1da177e4 | 512 | InterruptTheCard(base); |
d8d16e47 JS |
513 | |
514 | for (i=0;i<=0x0f;i++); /* another wee bit of delay */ | |
515 | ||
516 | if (WaitTillCardIsFree(base)) | |
1da177e4 | 517 | return -EIO; |
d8d16e47 | 518 | |
1da177e4 LT |
519 | if ((status=inw(base+0x4))!=0) { |
520 | printk(KERN_ERR "ISILoad:Card%d got out of sync.Card Status:0x%x\n",card+1, status); | |
521 | return -EIO; | |
d8d16e47 | 522 | } |
1da177e4 | 523 | return 0; |
d8d16e47 | 524 | |
1da177e4 LT |
525 | case MIOCTL_READ_FIRMWARE: |
526 | if (!capable(CAP_SYS_ADMIN)) | |
527 | return -EPERM; | |
d8d16e47 JS |
528 | |
529 | if (copy_from_user(&frame, argp, sizeof(bin_header))) | |
1da177e4 | 530 | return -EFAULT; |
d8d16e47 | 531 | |
1da177e4 LT |
532 | if (WaitTillCardIsFree(base)) |
533 | return -EIO; | |
d8d16e47 JS |
534 | |
535 | outw(0xf1,base); /* start download sequence */ | |
1da177e4 | 536 | outw(0x00,base); |
d8d16e47 JS |
537 | outw((frame.addr), base); /* lsb of adderess */ |
538 | ||
1da177e4 LT |
539 | word_count=(frame.count >> 1) + frame.count % 2; |
540 | outw(word_count+1, base); | |
541 | InterruptTheCard(base); | |
d8d16e47 JS |
542 | |
543 | for (i=0;i<=0xf;i++); /* a wee bit of delay */ | |
544 | ||
545 | if (WaitTillCardIsFree(base)) | |
1da177e4 | 546 | return -EIO; |
d8d16e47 | 547 | |
1da177e4 | 548 | if ((status=inw(base+0x4))!=0) { |
d8d16e47 | 549 | printk(KERN_WARNING "ISILoad:Card%d rejected verify header:\nAddress:0x%x \nCount:0x%x \nStatus:0x%x \n", |
1da177e4 LT |
550 | card+1, frame.addr, frame.count, status); |
551 | return -EIO; | |
552 | } | |
d8d16e47 | 553 | |
1da177e4 LT |
554 | inw(base); |
555 | insw(base, frame.bin_data, word_count); | |
556 | InterruptTheCard(base); | |
d8d16e47 JS |
557 | |
558 | for (i=0;i<=0x0f;i++); /* another wee bit of delay */ | |
559 | ||
560 | if (WaitTillCardIsFree(base)) | |
1da177e4 | 561 | return -EIO; |
d8d16e47 | 562 | |
1da177e4 LT |
563 | if ((status=inw(base+0x4))!=0) { |
564 | printk(KERN_ERR "ISILoad:Card%d verify got out of sync.Card Status:0x%x\n",card+1, status); | |
565 | return -EIO; | |
d8d16e47 JS |
566 | } |
567 | ||
568 | if (copy_to_user(argp, &frame, sizeof(bin_frame))) | |
1da177e4 LT |
569 | return -EFAULT; |
570 | return 0; | |
d8d16e47 | 571 | |
1da177e4 LT |
572 | case MIOCTL_XFER_CTRL: |
573 | if (!capable(CAP_SYS_ADMIN)) | |
574 | return -EPERM; | |
d8d16e47 | 575 | if (WaitTillCardIsFree(base)) |
1da177e4 | 576 | return -EIO; |
d8d16e47 | 577 | |
1da177e4 LT |
578 | outw(0xf2, base); |
579 | outw(0x800, base); | |
580 | outw(0x0, base); | |
581 | outw(0x0, base); | |
582 | InterruptTheCard(base); | |
d8d16e47 JS |
583 | outw(0x0, base+0x4); /* for ISI4608 cards */ |
584 | ||
1da177e4 | 585 | isi_card[card].status |= FIRMWARE_LOADED; |
d8d16e47 JS |
586 | return 0; |
587 | ||
1da177e4 | 588 | default: |
d8d16e47 JS |
589 | #ifdef ISICOM_DEBUG |
590 | printk(KERN_DEBUG "ISILoad: Received Ioctl cmd 0x%x.\n", cmd); | |
1da177e4 LT |
591 | #endif |
592 | return -ENOIOCTLCMD; | |
1da177e4 | 593 | } |
1da177e4 | 594 | } |
d8d16e47 | 595 | |
1da177e4 LT |
596 | |
597 | /* | |
598 | * ISICOM Driver specific routines ... | |
599 | * | |
600 | */ | |
d8d16e47 JS |
601 | |
602 | static inline int isicom_paranoia_check(struct isi_port const *port, char *name, | |
603 | const char *routine) | |
1da177e4 | 604 | { |
d8d16e47 JS |
605 | #ifdef ISICOM_DEBUG |
606 | static const char *badmagic = | |
1da177e4 | 607 | KERN_WARNING "ISICOM: Warning: bad isicom magic for dev %s in %s.\n"; |
d8d16e47 JS |
608 | static const char *badport = |
609 | KERN_WARNING "ISICOM: Warning: NULL isicom port for dev %s in %s.\n"; | |
1da177e4 LT |
610 | if (!port) { |
611 | printk(badport, name, routine); | |
612 | return 1; | |
613 | } | |
614 | if (port->magic != ISICOM_MAGIC) { | |
615 | printk(badmagic, name, routine); | |
616 | return 1; | |
d8d16e47 JS |
617 | } |
618 | #endif | |
1da177e4 LT |
619 | return 0; |
620 | } | |
d8d16e47 | 621 | |
1da177e4 | 622 | /* |
d8d16e47 | 623 | * Transmitter. |
1da177e4 LT |
624 | * |
625 | * We shovel data into the card buffers on a regular basis. The card | |
626 | * will do the rest of the work for us. | |
627 | */ | |
628 | ||
629 | static void isicom_tx(unsigned long _data) | |
630 | { | |
631 | short count = (BOARD_COUNT-1), card, base; | |
632 | short txcount, wrd, residue, word_count, cnt; | |
d8d16e47 JS |
633 | struct isi_port *port; |
634 | struct tty_struct *tty; | |
635 | ||
1da177e4 LT |
636 | /* find next active board */ |
637 | card = (prev_card + 1) & 0x0003; | |
638 | while(count-- > 0) { | |
d8d16e47 | 639 | if (isi_card[card].status & BOARD_ACTIVE) |
1da177e4 | 640 | break; |
d8d16e47 | 641 | card = (card + 1) & 0x0003; |
1da177e4 LT |
642 | } |
643 | if (!(isi_card[card].status & BOARD_ACTIVE)) | |
644 | goto sched_again; | |
d8d16e47 | 645 | |
1da177e4 | 646 | prev_card = card; |
d8d16e47 | 647 | |
1da177e4 LT |
648 | count = isi_card[card].port_count; |
649 | port = isi_card[card].ports; | |
650 | base = isi_card[card].base; | |
651 | for (;count > 0;count--, port++) { | |
652 | if (!lock_card_at_interrupt(&isi_card[card])) | |
653 | continue; | |
654 | /* port not active or tx disabled to force flow control */ | |
655 | if (!(port->flags & ASYNC_INITIALIZED) || | |
d8d16e47 | 656 | !(port->status & ISI_TXOK)) |
1da177e4 LT |
657 | unlock_card(&isi_card[card]); |
658 | continue; | |
d8d16e47 | 659 | |
1da177e4 | 660 | tty = port->tty; |
d8d16e47 JS |
661 | |
662 | ||
663 | if (tty == NULL) { | |
1da177e4 LT |
664 | unlock_card(&isi_card[card]); |
665 | continue; | |
666 | } | |
d8d16e47 | 667 | |
1da177e4 LT |
668 | txcount = min_t(short, TX_SIZE, port->xmit_cnt); |
669 | if (txcount <= 0 || tty->stopped || tty->hw_stopped) { | |
670 | unlock_card(&isi_card[card]); | |
671 | continue; | |
672 | } | |
673 | if (!(inw(base + 0x02) & (1 << port->channel))) { | |
674 | unlock_card(&isi_card[card]); | |
d8d16e47 | 675 | continue; |
1da177e4 LT |
676 | } |
677 | #ifdef ISICOM_DEBUG | |
d8d16e47 JS |
678 | printk(KERN_DEBUG "ISICOM: txing %d bytes, port%d.\n", |
679 | txcount, port->channel+1); | |
680 | #endif | |
1da177e4 LT |
681 | outw((port->channel << isi_card[card].shift_count) | txcount |
682 | , base); | |
683 | residue = NO; | |
d8d16e47 | 684 | wrd = 0; |
1da177e4 LT |
685 | while (1) { |
686 | cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE - port->xmit_tail)); | |
687 | if (residue == YES) { | |
688 | residue = NO; | |
689 | if (cnt > 0) { | |
690 | wrd |= (port->xmit_buf[port->xmit_tail] << 8); | |
691 | port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1); | |
692 | port->xmit_cnt--; | |
693 | txcount--; | |
694 | cnt--; | |
d8d16e47 | 695 | outw(wrd, base); |
1da177e4 LT |
696 | } |
697 | else { | |
698 | outw(wrd, base); | |
699 | break; | |
700 | } | |
d8d16e47 | 701 | } |
1da177e4 LT |
702 | if (cnt <= 0) break; |
703 | word_count = cnt >> 1; | |
704 | outsw(base, port->xmit_buf+port->xmit_tail, word_count); | |
705 | port->xmit_tail = (port->xmit_tail + (word_count << 1)) & | |
706 | (SERIAL_XMIT_SIZE - 1); | |
707 | txcount -= (word_count << 1); | |
708 | port->xmit_cnt -= (word_count << 1); | |
709 | if (cnt & 0x0001) { | |
710 | residue = YES; | |
711 | wrd = port->xmit_buf[port->xmit_tail]; | |
712 | port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1); | |
713 | port->xmit_cnt--; | |
714 | txcount--; | |
715 | } | |
716 | } | |
717 | ||
718 | InterruptTheCard(base); | |
719 | if (port->xmit_cnt <= 0) | |
720 | port->status &= ~ISI_TXOK; | |
721 | if (port->xmit_cnt <= WAKEUP_CHARS) | |
722 | schedule_work(&port->bh_tqueue); | |
723 | unlock_card(&isi_card[card]); | |
d8d16e47 | 724 | } |
1da177e4 | 725 | |
d8d16e47 JS |
726 | /* schedule another tx for hopefully in about 10ms */ |
727 | sched_again: | |
728 | if (!re_schedule) | |
1da177e4 LT |
729 | return; |
730 | init_timer(&tx); | |
731 | tx.expires = jiffies + HZ/100; | |
732 | tx.data = 0; | |
733 | tx.function = isicom_tx; | |
734 | add_timer(&tx); | |
d8d16e47 JS |
735 | |
736 | return; | |
737 | } | |
738 | ||
1da177e4 LT |
739 | /* Interrupt handlers */ |
740 | ||
d8d16e47 JS |
741 | |
742 | static void isicom_bottomhalf(void *data) | |
1da177e4 | 743 | { |
d8d16e47 JS |
744 | struct isi_port *port = (struct isi_port *) data; |
745 | struct tty_struct *tty = port->tty; | |
746 | ||
1da177e4 LT |
747 | if (!tty) |
748 | return; | |
749 | ||
d8d16e47 | 750 | tty_wakeup(tty); |
1da177e4 | 751 | wake_up_interruptible(&tty->write_wait); |
d8d16e47 JS |
752 | } |
753 | ||
1da177e4 | 754 | /* |
d8d16e47 | 755 | * Main interrupt handler routine |
1da177e4 | 756 | */ |
d8d16e47 | 757 | |
8070e35c | 758 | static irqreturn_t isicom_interrupt(int irq, void *dev_id, struct pt_regs *regs) |
1da177e4 | 759 | { |
8070e35c | 760 | struct isi_board *card = dev_id; |
d8d16e47 JS |
761 | struct isi_port *port; |
762 | struct tty_struct *tty; | |
8070e35c JS |
763 | unsigned long base; |
764 | u16 header, word_count, count, channel; | |
1da177e4 | 765 | short byte_count; |
33f0f88f | 766 | unsigned char *rp; |
d8d16e47 | 767 | |
1da177e4 LT |
768 | if (!card || !(card->status & FIRMWARE_LOADED)) |
769 | return IRQ_NONE; | |
d8d16e47 | 770 | |
1da177e4 LT |
771 | base = card->base; |
772 | spin_lock(&card->card_lock); | |
d8d16e47 | 773 | |
1da177e4 LT |
774 | if (card->isa == NO) { |
775 | /* | |
d8d16e47 JS |
776 | * disable any interrupts from the PCI card and lower the |
777 | * interrupt line | |
1da177e4 LT |
778 | */ |
779 | outw(0x8000, base+0x04); | |
780 | ClearInterrupt(base); | |
781 | } | |
d8d16e47 | 782 | |
1da177e4 LT |
783 | inw(base); /* get the dummy word out */ |
784 | header = inw(base); | |
785 | channel = (header & 0x7800) >> card->shift_count; | |
786 | byte_count = header & 0xff; | |
787 | ||
788 | if (channel + 1 > card->port_count) { | |
8070e35c | 789 | printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%lx): %d(channel) > port_count.\n", |
1da177e4 LT |
790 | base, channel+1); |
791 | if (card->isa) | |
792 | ClearInterrupt(base); | |
793 | else | |
d8d16e47 | 794 | outw(0x0000, base+0x04); /* enable interrupts */ |
1da177e4 | 795 | spin_unlock(&card->card_lock); |
d8d16e47 | 796 | return IRQ_HANDLED; |
1da177e4 LT |
797 | } |
798 | port = card->ports + channel; | |
799 | if (!(port->flags & ASYNC_INITIALIZED)) { | |
800 | if (card->isa) | |
801 | ClearInterrupt(base); | |
802 | else | |
803 | outw(0x0000, base+0x04); /* enable interrupts */ | |
804 | return IRQ_HANDLED; | |
d8d16e47 JS |
805 | } |
806 | ||
1da177e4 LT |
807 | tty = port->tty; |
808 | if (tty == NULL) { | |
809 | word_count = byte_count >> 1; | |
810 | while(byte_count > 1) { | |
811 | inw(base); | |
812 | byte_count -= 2; | |
813 | } | |
814 | if (byte_count & 0x01) | |
815 | inw(base); | |
816 | if (card->isa == YES) | |
817 | ClearInterrupt(base); | |
818 | else | |
819 | outw(0x0000, base+0x04); /* enable interrupts */ | |
820 | spin_unlock(&card->card_lock); | |
821 | return IRQ_HANDLED; | |
822 | } | |
d8d16e47 | 823 | |
1da177e4 LT |
824 | if (header & 0x8000) { /* Status Packet */ |
825 | header = inw(base); | |
826 | switch(header & 0xff) { | |
d8d16e47 JS |
827 | case 0: /* Change in EIA signals */ |
828 | ||
829 | if (port->flags & ASYNC_CHECK_CD) { | |
830 | if (port->status & ISI_DCD) { | |
831 | if (!(header & ISI_DCD)) { | |
832 | /* Carrier has been lost */ | |
1da177e4 | 833 | #ifdef ISICOM_DEBUG |
d8d16e47 JS |
834 | printk(KERN_DEBUG "ISICOM: interrupt: DCD->low.\n"); |
835 | #endif | |
836 | port->status &= ~ISI_DCD; | |
837 | schedule_work(&port->hangup_tq); | |
1da177e4 LT |
838 | } |
839 | } | |
840 | else { | |
d8d16e47 JS |
841 | if (header & ISI_DCD) { |
842 | /* Carrier has been detected */ | |
843 | #ifdef ISICOM_DEBUG | |
844 | printk(KERN_DEBUG "ISICOM: interrupt: DCD->high.\n"); | |
845 | #endif | |
1da177e4 | 846 | port->status |= ISI_DCD; |
d8d16e47 | 847 | wake_up_interruptible(&port->open_wait); |
1da177e4 | 848 | } |
d8d16e47 JS |
849 | } |
850 | } | |
851 | else { | |
852 | if (header & ISI_DCD) | |
853 | port->status |= ISI_DCD; | |
854 | else | |
855 | port->status &= ~ISI_DCD; | |
856 | } | |
857 | ||
858 | if (port->flags & ASYNC_CTS_FLOW) { | |
859 | if (port->tty->hw_stopped) { | |
860 | if (header & ISI_CTS) { | |
861 | port->tty->hw_stopped = 0; | |
862 | /* start tx ing */ | |
863 | port->status |= (ISI_TXOK | ISI_CTS); | |
864 | schedule_work(&port->bh_tqueue); | |
1da177e4 LT |
865 | } |
866 | } | |
867 | else { | |
d8d16e47 JS |
868 | if (!(header & ISI_CTS)) { |
869 | port->tty->hw_stopped = 1; | |
870 | /* stop tx ing */ | |
871 | port->status &= ~(ISI_TXOK | ISI_CTS); | |
872 | } | |
1da177e4 | 873 | } |
d8d16e47 JS |
874 | } |
875 | else { | |
876 | if (header & ISI_CTS) | |
877 | port->status |= ISI_CTS; | |
1da177e4 | 878 | else |
d8d16e47 JS |
879 | port->status &= ~ISI_CTS; |
880 | } | |
881 | ||
882 | if (header & ISI_DSR) | |
883 | port->status |= ISI_DSR; | |
884 | else | |
885 | port->status &= ~ISI_DSR; | |
886 | ||
887 | if (header & ISI_RI) | |
888 | port->status |= ISI_RI; | |
889 | else | |
890 | port->status &= ~ISI_RI; | |
891 | ||
892 | break; | |
893 | ||
894 | case 1: /* Received Break !!! */ | |
895 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
896 | if (port->flags & ASYNC_SAK) | |
897 | do_SAK(tty); | |
898 | tty_flip_buffer_push(tty); | |
899 | break; | |
900 | ||
901 | case 2: /* Statistics */ | |
902 | printk(KERN_DEBUG "ISICOM: isicom_interrupt: stats!!!.\n"); | |
903 | break; | |
904 | ||
905 | default: | |
906 | printk(KERN_WARNING "ISICOM: Intr: Unknown code in status packet.\n"); | |
907 | break; | |
908 | } | |
1da177e4 LT |
909 | } |
910 | else { /* Data Packet */ | |
33f0f88f AC |
911 | |
912 | count = tty_prepare_flip_string(tty, &rp, byte_count & ~1); | |
1da177e4 | 913 | #ifdef ISICOM_DEBUG |
d8d16e47 | 914 | printk(KERN_DEBUG "ISICOM: Intr: Can rx %d of %d bytes.\n", |
1da177e4 | 915 | count, byte_count); |
d8d16e47 | 916 | #endif |
1da177e4 | 917 | word_count = count >> 1; |
33f0f88f | 918 | insw(base, rp, word_count); |
1da177e4 LT |
919 | byte_count -= (word_count << 1); |
920 | if (count & 0x0001) { | |
33f0f88f | 921 | tty_insert_flip_char(tty, inw(base) & 0xff, TTY_NORMAL); |
1da177e4 | 922 | byte_count -= 2; |
d8d16e47 | 923 | } |
1da177e4 | 924 | if (byte_count > 0) { |
8070e35c | 925 | printk(KERN_DEBUG "ISICOM: Intr(0x%lx:%d): Flip buffer overflow! dropping bytes...\n", |
1da177e4 LT |
926 | base, channel+1); |
927 | while(byte_count > 0) { /* drain out unread xtra data */ | |
928 | inw(base); | |
929 | byte_count -= 2; | |
930 | } | |
931 | } | |
33f0f88f | 932 | tty_flip_buffer_push(tty); |
1da177e4 LT |
933 | } |
934 | if (card->isa == YES) | |
935 | ClearInterrupt(base); | |
936 | else | |
d8d16e47 | 937 | outw(0x0000, base+0x04); /* enable interrupts */ |
1da177e4 | 938 | return IRQ_HANDLED; |
d8d16e47 | 939 | } |
1da177e4 | 940 | |
d8d16e47 | 941 | static void isicom_config_port(struct isi_port *port) |
1da177e4 | 942 | { |
d8d16e47 JS |
943 | struct isi_board *card = port->card; |
944 | struct tty_struct *tty; | |
1da177e4 | 945 | unsigned long baud; |
8070e35c JS |
946 | unsigned long base = card->base; |
947 | u16 channel_setup, channel = port->channel, | |
948 | shift_count = card->shift_count; | |
1da177e4 | 949 | unsigned char flow_ctrl; |
d8d16e47 | 950 | |
1da177e4 LT |
951 | if (!(tty = port->tty) || !tty->termios) |
952 | return; | |
953 | baud = C_BAUD(tty); | |
954 | if (baud & CBAUDEX) { | |
955 | baud &= ~CBAUDEX; | |
d8d16e47 | 956 | |
1da177e4 LT |
957 | /* if CBAUDEX bit is on and the baud is set to either 50 or 75 |
958 | * then the card is programmed for 57.6Kbps or 115Kbps | |
959 | * respectively. | |
d8d16e47 JS |
960 | */ |
961 | ||
1da177e4 LT |
962 | if (baud < 1 || baud > 2) |
963 | port->tty->termios->c_cflag &= ~CBAUDEX; | |
964 | else | |
965 | baud += 15; | |
d8d16e47 | 966 | } |
1da177e4 | 967 | if (baud == 15) { |
d8d16e47 JS |
968 | |
969 | /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set | |
1da177e4 LT |
970 | * by the set_serial_info ioctl ... this is done by |
971 | * the 'setserial' utility. | |
d8d16e47 JS |
972 | */ |
973 | ||
1da177e4 | 974 | if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
d8d16e47 | 975 | baud++; /* 57.6 Kbps */ |
1da177e4 | 976 | if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
d8d16e47 | 977 | baud +=2; /* 115 Kbps */ |
1da177e4 LT |
978 | } |
979 | if (linuxb_to_isib[baud] == -1) { | |
980 | /* hang up */ | |
d8d16e47 JS |
981 | drop_dtr(port); |
982 | return; | |
983 | } | |
984 | else | |
1da177e4 | 985 | raise_dtr(port); |
d8d16e47 | 986 | |
1da177e4 LT |
987 | if (lock_card(card)) { |
988 | outw(0x8000 | (channel << shift_count) |0x03, base); | |
989 | outw(linuxb_to_isib[baud] << 8 | 0x03, base); | |
990 | channel_setup = 0; | |
991 | switch(C_CSIZE(tty)) { | |
d8d16e47 JS |
992 | case CS5: |
993 | channel_setup |= ISICOM_CS5; | |
994 | break; | |
995 | case CS6: | |
996 | channel_setup |= ISICOM_CS6; | |
997 | break; | |
998 | case CS7: | |
999 | channel_setup |= ISICOM_CS7; | |
1000 | break; | |
1001 | case CS8: | |
1002 | channel_setup |= ISICOM_CS8; | |
1003 | break; | |
1da177e4 | 1004 | } |
d8d16e47 | 1005 | |
1da177e4 LT |
1006 | if (C_CSTOPB(tty)) |
1007 | channel_setup |= ISICOM_2SB; | |
1008 | if (C_PARENB(tty)) { | |
1009 | channel_setup |= ISICOM_EVPAR; | |
1010 | if (C_PARODD(tty)) | |
d8d16e47 | 1011 | channel_setup |= ISICOM_ODPAR; |
1da177e4 | 1012 | } |
d8d16e47 | 1013 | outw(channel_setup, base); |
1da177e4 | 1014 | InterruptTheCard(base); |
d8d16e47 JS |
1015 | unlock_card(card); |
1016 | } | |
1da177e4 LT |
1017 | if (C_CLOCAL(tty)) |
1018 | port->flags &= ~ASYNC_CHECK_CD; | |
1019 | else | |
d8d16e47 JS |
1020 | port->flags |= ASYNC_CHECK_CD; |
1021 | ||
1da177e4 LT |
1022 | /* flow control settings ...*/ |
1023 | flow_ctrl = 0; | |
1024 | port->flags &= ~ASYNC_CTS_FLOW; | |
1025 | if (C_CRTSCTS(tty)) { | |
1026 | port->flags |= ASYNC_CTS_FLOW; | |
1027 | flow_ctrl |= ISICOM_CTSRTS; | |
d8d16e47 JS |
1028 | } |
1029 | if (I_IXON(tty)) | |
1da177e4 LT |
1030 | flow_ctrl |= ISICOM_RESPOND_XONXOFF; |
1031 | if (I_IXOFF(tty)) | |
d8d16e47 JS |
1032 | flow_ctrl |= ISICOM_INITIATE_XONXOFF; |
1033 | ||
1da177e4 LT |
1034 | if (lock_card(card)) { |
1035 | outw(0x8000 | (channel << shift_count) |0x04, base); | |
1036 | outw(flow_ctrl << 8 | 0x05, base); | |
1037 | outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base); | |
1038 | InterruptTheCard(base); | |
1039 | unlock_card(card); | |
1040 | } | |
d8d16e47 | 1041 | |
1da177e4 LT |
1042 | /* rx enabled -> enable port for rx on the card */ |
1043 | if (C_CREAD(tty)) { | |
1044 | card->port_status |= (1 << channel); | |
1045 | outw(card->port_status, base + 0x02); | |
1046 | } | |
1047 | } | |
1da177e4 | 1048 | |
d8d16e47 JS |
1049 | /* open et all */ |
1050 | ||
1051 | static inline void isicom_setup_board(struct isi_board *bp) | |
1da177e4 LT |
1052 | { |
1053 | int channel; | |
d8d16e47 | 1054 | struct isi_port *port; |
1da177e4 | 1055 | unsigned long flags; |
d8d16e47 | 1056 | |
1da177e4 LT |
1057 | spin_lock_irqsave(&bp->card_lock, flags); |
1058 | if (bp->status & BOARD_ACTIVE) { | |
1059 | spin_unlock_irqrestore(&bp->card_lock, flags); | |
1060 | return; | |
1061 | } | |
1062 | port = bp->ports; | |
1063 | bp->status |= BOARD_ACTIVE; | |
1064 | spin_unlock_irqrestore(&bp->card_lock, flags); | |
d8d16e47 | 1065 | for (channel = 0; channel < bp->port_count; channel++, port++) |
1da177e4 LT |
1066 | drop_dtr_rts(port); |
1067 | return; | |
1068 | } | |
d8d16e47 JS |
1069 | |
1070 | static int isicom_setup_port(struct isi_port *port) | |
1da177e4 | 1071 | { |
d8d16e47 | 1072 | struct isi_board *card = port->card; |
1da177e4 | 1073 | unsigned long flags; |
d8d16e47 | 1074 | |
1da177e4 LT |
1075 | if (port->flags & ASYNC_INITIALIZED) { |
1076 | return 0; | |
1077 | } | |
1078 | if (!port->xmit_buf) { | |
1079 | unsigned long page; | |
d8d16e47 | 1080 | |
1da177e4 LT |
1081 | if (!(page = get_zeroed_page(GFP_KERNEL))) |
1082 | return -ENOMEM; | |
d8d16e47 | 1083 | |
1da177e4 LT |
1084 | if (port->xmit_buf) { |
1085 | free_page(page); | |
1086 | return -ERESTARTSYS; | |
1087 | } | |
d8d16e47 JS |
1088 | port->xmit_buf = (unsigned char *) page; |
1089 | } | |
1da177e4 LT |
1090 | |
1091 | spin_lock_irqsave(&card->card_lock, flags); | |
1092 | if (port->tty) | |
1093 | clear_bit(TTY_IO_ERROR, &port->tty->flags); | |
1094 | if (port->count == 1) | |
1095 | card->count++; | |
d8d16e47 | 1096 | |
1da177e4 | 1097 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; |
d8d16e47 | 1098 | |
1da177e4 LT |
1099 | /* discard any residual data */ |
1100 | kill_queue(port, ISICOM_KILLTX | ISICOM_KILLRX); | |
d8d16e47 | 1101 | |
1da177e4 LT |
1102 | isicom_config_port(port); |
1103 | port->flags |= ASYNC_INITIALIZED; | |
1104 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 JS |
1105 | |
1106 | return 0; | |
1107 | } | |
1108 | ||
1109 | static int block_til_ready(struct tty_struct *tty, struct file *filp, struct isi_port *port) | |
1da177e4 | 1110 | { |
d8d16e47 | 1111 | struct isi_board *card = port->card; |
1da177e4 LT |
1112 | int do_clocal = 0, retval; |
1113 | unsigned long flags; | |
1114 | DECLARE_WAITQUEUE(wait, current); | |
1115 | ||
1116 | /* block if port is in the process of being closed */ | |
1117 | ||
1118 | if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) { | |
d8d16e47 | 1119 | #ifdef ISICOM_DEBUG |
1da177e4 | 1120 | printk(KERN_DEBUG "ISICOM: block_til_ready: close in progress.\n"); |
d8d16e47 | 1121 | #endif |
1da177e4 LT |
1122 | interruptible_sleep_on(&port->close_wait); |
1123 | if (port->flags & ASYNC_HUP_NOTIFY) | |
1124 | return -EAGAIN; | |
1125 | else | |
1126 | return -ERESTARTSYS; | |
1127 | } | |
d8d16e47 | 1128 | |
1da177e4 | 1129 | /* if non-blocking mode is set ... */ |
d8d16e47 | 1130 | |
1da177e4 | 1131 | if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) { |
d8d16e47 | 1132 | #ifdef ISICOM_DEBUG |
1da177e4 | 1133 | printk(KERN_DEBUG "ISICOM: block_til_ready: non-block mode.\n"); |
d8d16e47 | 1134 | #endif |
1da177e4 | 1135 | port->flags |= ASYNC_NORMAL_ACTIVE; |
d8d16e47 JS |
1136 | return 0; |
1137 | } | |
1138 | ||
1da177e4 LT |
1139 | if (C_CLOCAL(tty)) |
1140 | do_clocal = 1; | |
d8d16e47 JS |
1141 | |
1142 | /* block waiting for DCD to be asserted, and while | |
1da177e4 LT |
1143 | callout dev is busy */ |
1144 | retval = 0; | |
1145 | add_wait_queue(&port->open_wait, &wait); | |
1146 | ||
1147 | spin_lock_irqsave(&card->card_lock, flags); | |
1148 | if (!tty_hung_up_p(filp)) | |
1149 | port->count--; | |
1150 | port->blocked_open++; | |
1151 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1152 | |
1da177e4 LT |
1153 | while (1) { |
1154 | raise_dtr_rts(port); | |
1155 | ||
1156 | set_current_state(TASK_INTERRUPTIBLE); | |
d8d16e47 | 1157 | if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) { |
1da177e4 LT |
1158 | if (port->flags & ASYNC_HUP_NOTIFY) |
1159 | retval = -EAGAIN; | |
1160 | else | |
1161 | retval = -ERESTARTSYS; | |
1162 | break; | |
d8d16e47 | 1163 | } |
1da177e4 | 1164 | if (!(port->flags & ASYNC_CLOSING) && |
d8d16e47 | 1165 | (do_clocal || (port->status & ISI_DCD))) { |
1da177e4 | 1166 | break; |
d8d16e47 | 1167 | } |
1da177e4 LT |
1168 | if (signal_pending(current)) { |
1169 | retval = -ERESTARTSYS; | |
1170 | break; | |
1171 | } | |
d8d16e47 | 1172 | schedule(); |
1da177e4 LT |
1173 | } |
1174 | set_current_state(TASK_RUNNING); | |
1175 | remove_wait_queue(&port->open_wait, &wait); | |
1176 | spin_lock_irqsave(&card->card_lock, flags); | |
1177 | if (!tty_hung_up_p(filp)) | |
1178 | port->count++; | |
1179 | port->blocked_open--; | |
1180 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1181 | if (retval) | |
1182 | return retval; | |
1183 | port->flags |= ASYNC_NORMAL_ACTIVE; | |
1184 | return 0; | |
1185 | } | |
d8d16e47 JS |
1186 | |
1187 | static int isicom_open(struct tty_struct *tty, struct file *filp) | |
1da177e4 | 1188 | { |
d8d16e47 JS |
1189 | struct isi_port *port; |
1190 | struct isi_board *card; | |
1da177e4 LT |
1191 | unsigned int line, board; |
1192 | int error; | |
1193 | ||
1194 | line = tty->index; | |
1195 | if (line < 0 || line > PORT_COUNT-1) | |
1196 | return -ENODEV; | |
1197 | board = BOARD(line); | |
1198 | card = &isi_card[board]; | |
d8d16e47 | 1199 | |
1da177e4 LT |
1200 | if (!(card->status & FIRMWARE_LOADED)) |
1201 | return -ENODEV; | |
d8d16e47 | 1202 | |
1da177e4 LT |
1203 | /* open on a port greater than the port count for the card !!! */ |
1204 | if (line > ((board * 16) + card->port_count - 1)) | |
1205 | return -ENODEV; | |
1206 | ||
d8d16e47 | 1207 | port = &isi_ports[line]; |
1da177e4 LT |
1208 | if (isicom_paranoia_check(port, tty->name, "isicom_open")) |
1209 | return -ENODEV; | |
d8d16e47 JS |
1210 | |
1211 | isicom_setup_board(card); | |
1212 | ||
1da177e4 LT |
1213 | port->count++; |
1214 | tty->driver_data = port; | |
1215 | port->tty = tty; | |
1216 | if ((error = isicom_setup_port(port))!=0) | |
1217 | return error; | |
1218 | if ((error = block_til_ready(tty, filp, port))!=0) | |
1219 | return error; | |
1220 | ||
d8d16e47 | 1221 | return 0; |
1da177e4 | 1222 | } |
d8d16e47 | 1223 | |
1da177e4 LT |
1224 | /* close et all */ |
1225 | ||
d8d16e47 | 1226 | static inline void isicom_shutdown_board(struct isi_board *bp) |
1da177e4 LT |
1227 | { |
1228 | unsigned long flags; | |
1229 | ||
1230 | spin_lock_irqsave(&bp->card_lock, flags); | |
1231 | if (bp->status & BOARD_ACTIVE) { | |
1232 | bp->status &= ~BOARD_ACTIVE; | |
1233 | } | |
1234 | spin_unlock_irqrestore(&bp->card_lock, flags); | |
1235 | } | |
1236 | ||
d8d16e47 | 1237 | static void isicom_shutdown_port(struct isi_port *port) |
1da177e4 | 1238 | { |
d8d16e47 JS |
1239 | struct isi_board *card = port->card; |
1240 | struct tty_struct *tty; | |
1da177e4 | 1241 | unsigned long flags; |
d8d16e47 | 1242 | |
1da177e4 LT |
1243 | tty = port->tty; |
1244 | ||
d8d16e47 | 1245 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 LT |
1246 | if (!(port->flags & ASYNC_INITIALIZED)) { |
1247 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1248 | return; | |
1249 | } | |
1250 | if (port->xmit_buf) { | |
1251 | free_page((unsigned long) port->xmit_buf); | |
1252 | port->xmit_buf = NULL; | |
d8d16e47 | 1253 | } |
1da177e4 LT |
1254 | port->flags &= ~ASYNC_INITIALIZED; |
1255 | /* 3rd October 2000 : Vinayak P Risbud */ | |
1256 | port->tty = NULL; | |
1257 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1258 | |
1da177e4 LT |
1259 | /*Fix done by Anil .S on 30-04-2001 |
1260 | remote login through isi port has dtr toggle problem | |
1261 | due to which the carrier drops before the password prompt | |
d8d16e47 | 1262 | appears on the remote end. Now we drop the dtr only if the |
1da177e4 | 1263 | HUPCL(Hangup on close) flag is set for the tty*/ |
d8d16e47 JS |
1264 | |
1265 | if (C_HUPCL(tty)) | |
1da177e4 LT |
1266 | /* drop dtr on this port */ |
1267 | drop_dtr(port); | |
d8d16e47 JS |
1268 | |
1269 | /* any other port uninits */ | |
1da177e4 LT |
1270 | if (tty) |
1271 | set_bit(TTY_IO_ERROR, &tty->flags); | |
d8d16e47 | 1272 | |
1da177e4 | 1273 | if (--card->count < 0) { |
8070e35c | 1274 | printk(KERN_DEBUG "ISICOM: isicom_shutdown_port: bad board(0x%lx) count %d.\n", |
1da177e4 | 1275 | card->base, card->count); |
d8d16e47 | 1276 | card->count = 0; |
1da177e4 | 1277 | } |
d8d16e47 | 1278 | |
1da177e4 | 1279 | /* last port was closed , shutdown that boad too */ |
d8d16e47 | 1280 | if (C_HUPCL(tty)) { |
1da177e4 LT |
1281 | if (!card->count) |
1282 | isicom_shutdown_board(card); | |
1283 | } | |
1284 | } | |
1285 | ||
d8d16e47 | 1286 | static void isicom_close(struct tty_struct *tty, struct file *filp) |
1da177e4 | 1287 | { |
8070e35c | 1288 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1289 | struct isi_board *card = port->card; |
1da177e4 | 1290 | unsigned long flags; |
d8d16e47 | 1291 | |
1da177e4 LT |
1292 | if (!port) |
1293 | return; | |
1294 | if (isicom_paranoia_check(port, tty->name, "isicom_close")) | |
1295 | return; | |
d8d16e47 JS |
1296 | |
1297 | #ifdef ISICOM_DEBUG | |
1da177e4 | 1298 | printk(KERN_DEBUG "ISICOM: Close start!!!.\n"); |
d8d16e47 JS |
1299 | #endif |
1300 | ||
1da177e4 LT |
1301 | spin_lock_irqsave(&card->card_lock, flags); |
1302 | if (tty_hung_up_p(filp)) { | |
1303 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1304 | return; | |
1305 | } | |
d8d16e47 | 1306 | |
1da177e4 | 1307 | if (tty->count == 1 && port->count != 1) { |
8070e35c | 1308 | printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port count" |
1da177e4 LT |
1309 | "tty->count = 1 port count = %d.\n", |
1310 | card->base, port->count); | |
1311 | port->count = 1; | |
1312 | } | |
1313 | if (--port->count < 0) { | |
8070e35c | 1314 | printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port count for" |
d8d16e47 | 1315 | "channel%d = %d", card->base, port->channel, |
1da177e4 | 1316 | port->count); |
d8d16e47 | 1317 | port->count = 0; |
1da177e4 | 1318 | } |
d8d16e47 | 1319 | |
1da177e4 LT |
1320 | if (port->count) { |
1321 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1322 | return; | |
d8d16e47 | 1323 | } |
1da177e4 LT |
1324 | port->flags |= ASYNC_CLOSING; |
1325 | tty->closing = 1; | |
1326 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1327 | |
1da177e4 LT |
1328 | if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE) |
1329 | tty_wait_until_sent(tty, port->closing_wait); | |
d8d16e47 | 1330 | /* indicate to the card that no more data can be received |
1da177e4 LT |
1331 | on this port */ |
1332 | spin_lock_irqsave(&card->card_lock, flags); | |
d8d16e47 | 1333 | if (port->flags & ASYNC_INITIALIZED) { |
1da177e4 LT |
1334 | card->port_status &= ~(1 << port->channel); |
1335 | outw(card->port_status, card->base + 0x02); | |
d8d16e47 | 1336 | } |
1da177e4 LT |
1337 | isicom_shutdown_port(port); |
1338 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1339 | |
1da177e4 LT |
1340 | if (tty->driver->flush_buffer) |
1341 | tty->driver->flush_buffer(tty); | |
1342 | tty_ldisc_flush(tty); | |
1343 | ||
1344 | spin_lock_irqsave(&card->card_lock, flags); | |
1345 | tty->closing = 0; | |
1346 | ||
1347 | if (port->blocked_open) { | |
1348 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1349 | if (port->close_delay) { | |
d8d16e47 | 1350 | #ifdef ISICOM_DEBUG |
1da177e4 | 1351 | printk(KERN_DEBUG "ISICOM: scheduling until time out.\n"); |
d8d16e47 | 1352 | #endif |
1da177e4 LT |
1353 | msleep_interruptible(jiffies_to_msecs(port->close_delay)); |
1354 | } | |
1355 | spin_lock_irqsave(&card->card_lock, flags); | |
1356 | wake_up_interruptible(&port->open_wait); | |
d8d16e47 | 1357 | } |
1da177e4 LT |
1358 | port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); |
1359 | wake_up_interruptible(&port->close_wait); | |
1360 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1361 | } | |
1362 | ||
1363 | /* write et all */ | |
d8d16e47 JS |
1364 | static int isicom_write(struct tty_struct *tty, const unsigned char *buf, |
1365 | int count) | |
1da177e4 | 1366 | { |
8070e35c | 1367 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1368 | struct isi_board *card = port->card; |
1da177e4 LT |
1369 | unsigned long flags; |
1370 | int cnt, total = 0; | |
1371 | ||
1372 | if (isicom_paranoia_check(port, tty->name, "isicom_write")) | |
1373 | return 0; | |
d8d16e47 | 1374 | |
1da177e4 LT |
1375 | if (!tty || !port->xmit_buf || !tmp_buf) |
1376 | return 0; | |
d8d16e47 | 1377 | |
1da177e4 | 1378 | spin_lock_irqsave(&card->card_lock, flags); |
d8d16e47 JS |
1379 | |
1380 | while(1) { | |
1da177e4 | 1381 | cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1, |
d8d16e47 JS |
1382 | SERIAL_XMIT_SIZE - port->xmit_head)); |
1383 | if (cnt <= 0) | |
1da177e4 | 1384 | break; |
d8d16e47 | 1385 | |
1da177e4 LT |
1386 | memcpy(port->xmit_buf + port->xmit_head, buf, cnt); |
1387 | port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE - 1); | |
1388 | port->xmit_cnt += cnt; | |
1389 | buf += cnt; | |
1390 | count -= cnt; | |
1391 | total += cnt; | |
d8d16e47 | 1392 | } |
1da177e4 LT |
1393 | if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
1394 | port->status |= ISI_TXOK; | |
1395 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1396 | return total; |
1da177e4 LT |
1397 | } |
1398 | ||
1399 | /* put_char et all */ | |
d8d16e47 | 1400 | static void isicom_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1401 | { |
8070e35c | 1402 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1403 | struct isi_board *card = port->card; |
1da177e4 | 1404 | unsigned long flags; |
d8d16e47 | 1405 | |
1da177e4 LT |
1406 | if (isicom_paranoia_check(port, tty->name, "isicom_put_char")) |
1407 | return; | |
d8d16e47 | 1408 | |
1da177e4 LT |
1409 | if (!tty || !port->xmit_buf) |
1410 | return; | |
1411 | ||
1412 | spin_lock_irqsave(&card->card_lock, flags); | |
1413 | if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { | |
1414 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1415 | return; | |
1416 | } | |
d8d16e47 | 1417 | |
1da177e4 LT |
1418 | port->xmit_buf[port->xmit_head++] = ch; |
1419 | port->xmit_head &= (SERIAL_XMIT_SIZE - 1); | |
1420 | port->xmit_cnt++; | |
1421 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1422 | } | |
1423 | ||
1424 | /* flush_chars et all */ | |
d8d16e47 | 1425 | static void isicom_flush_chars(struct tty_struct *tty) |
1da177e4 | 1426 | { |
8070e35c | 1427 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1428 | |
1da177e4 LT |
1429 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars")) |
1430 | return; | |
d8d16e47 | 1431 | |
1da177e4 LT |
1432 | if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || !port->xmit_buf) |
1433 | return; | |
d8d16e47 | 1434 | |
1da177e4 LT |
1435 | /* this tells the transmitter to consider this port for |
1436 | data output to the card ... that's the best we can do. */ | |
d8d16e47 | 1437 | port->status |= ISI_TXOK; |
1da177e4 LT |
1438 | } |
1439 | ||
1440 | /* write_room et all */ | |
d8d16e47 | 1441 | static int isicom_write_room(struct tty_struct *tty) |
1da177e4 | 1442 | { |
8070e35c | 1443 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1444 | int free; |
1445 | ||
1446 | if (isicom_paranoia_check(port, tty->name, "isicom_write_room")) | |
1447 | return 0; | |
d8d16e47 | 1448 | |
1da177e4 LT |
1449 | free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; |
1450 | if (free < 0) | |
1451 | free = 0; | |
1452 | return free; | |
1453 | } | |
1454 | ||
1455 | /* chars_in_buffer et all */ | |
d8d16e47 | 1456 | static int isicom_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1457 | { |
8070e35c | 1458 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1459 | if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer")) |
1460 | return 0; | |
1461 | return port->xmit_cnt; | |
1462 | } | |
1463 | ||
1464 | /* ioctl et all */ | |
d8d16e47 | 1465 | static inline void isicom_send_break(struct isi_port *port, unsigned long length) |
1da177e4 | 1466 | { |
d8d16e47 | 1467 | struct isi_board *card = port->card; |
8070e35c | 1468 | unsigned long base = card->base; |
d8d16e47 JS |
1469 | |
1470 | if (!lock_card(card)) | |
1da177e4 | 1471 | return; |
d8d16e47 | 1472 | |
1da177e4 LT |
1473 | outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base); |
1474 | outw((length & 0xff) << 8 | 0x00, base); | |
1475 | outw((length & 0xff00), base); | |
1476 | InterruptTheCard(base); | |
1477 | ||
1478 | unlock_card(card); | |
1479 | } | |
1480 | ||
1481 | static int isicom_tiocmget(struct tty_struct *tty, struct file *file) | |
1482 | { | |
8070e35c | 1483 | struct isi_port *port = tty->driver_data; |
1da177e4 | 1484 | /* just send the port status */ |
8070e35c | 1485 | u16 status = port->status; |
1da177e4 LT |
1486 | |
1487 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) | |
1488 | return -ENODEV; | |
d8d16e47 | 1489 | |
1da177e4 LT |
1490 | return ((status & ISI_RTS) ? TIOCM_RTS : 0) | |
1491 | ((status & ISI_DTR) ? TIOCM_DTR : 0) | | |
1492 | ((status & ISI_DCD) ? TIOCM_CAR : 0) | | |
1493 | ((status & ISI_DSR) ? TIOCM_DSR : 0) | | |
1494 | ((status & ISI_CTS) ? TIOCM_CTS : 0) | | |
1495 | ((status & ISI_RI ) ? TIOCM_RI : 0); | |
1496 | } | |
1497 | ||
1498 | static int isicom_tiocmset(struct tty_struct *tty, struct file *file, | |
d8d16e47 | 1499 | unsigned int set, unsigned int clear) |
1da177e4 | 1500 | { |
8070e35c | 1501 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1502 | |
1da177e4 LT |
1503 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
1504 | return -ENODEV; | |
d8d16e47 | 1505 | |
1da177e4 LT |
1506 | if (set & TIOCM_RTS) |
1507 | raise_rts(port); | |
1508 | if (set & TIOCM_DTR) | |
1509 | raise_dtr(port); | |
1510 | ||
1511 | if (clear & TIOCM_RTS) | |
1512 | drop_rts(port); | |
1513 | if (clear & TIOCM_DTR) | |
1514 | drop_dtr(port); | |
1515 | ||
1516 | return 0; | |
d8d16e47 | 1517 | } |
1da177e4 | 1518 | |
d8d16e47 JS |
1519 | static int isicom_set_serial_info(struct isi_port *port, |
1520 | struct serial_struct __user *info) | |
1da177e4 LT |
1521 | { |
1522 | struct serial_struct newinfo; | |
1523 | int reconfig_port; | |
1524 | ||
d8d16e47 | 1525 | if (copy_from_user(&newinfo, info, sizeof(newinfo))) |
1da177e4 | 1526 | return -EFAULT; |
d8d16e47 JS |
1527 | |
1528 | reconfig_port = ((port->flags & ASYNC_SPD_MASK) != | |
1529 | (newinfo.flags & ASYNC_SPD_MASK)); | |
1530 | ||
1da177e4 LT |
1531 | if (!capable(CAP_SYS_ADMIN)) { |
1532 | if ((newinfo.close_delay != port->close_delay) || | |
d8d16e47 JS |
1533 | (newinfo.closing_wait != port->closing_wait) || |
1534 | ((newinfo.flags & ~ASYNC_USR_MASK) != | |
1535 | (port->flags & ~ASYNC_USR_MASK))) | |
1da177e4 LT |
1536 | return -EPERM; |
1537 | port->flags = ((port->flags & ~ ASYNC_USR_MASK) | | |
1538 | (newinfo.flags & ASYNC_USR_MASK)); | |
d8d16e47 | 1539 | } |
1da177e4 LT |
1540 | else { |
1541 | port->close_delay = newinfo.close_delay; | |
d8d16e47 JS |
1542 | port->closing_wait = newinfo.closing_wait; |
1543 | port->flags = ((port->flags & ~ASYNC_FLAGS) | | |
1da177e4 LT |
1544 | (newinfo.flags & ASYNC_FLAGS)); |
1545 | } | |
1546 | if (reconfig_port) { | |
1547 | isicom_config_port(port); | |
1548 | } | |
d8d16e47 JS |
1549 | return 0; |
1550 | } | |
1da177e4 | 1551 | |
d8d16e47 JS |
1552 | static int isicom_get_serial_info(struct isi_port *port, |
1553 | struct serial_struct __user *info) | |
1da177e4 LT |
1554 | { |
1555 | struct serial_struct out_info; | |
d8d16e47 | 1556 | |
1da177e4 LT |
1557 | memset(&out_info, 0, sizeof(out_info)); |
1558 | /* out_info.type = ? */ | |
1559 | out_info.line = port - isi_ports; | |
1560 | out_info.port = port->card->base; | |
1561 | out_info.irq = port->card->irq; | |
1562 | out_info.flags = port->flags; | |
1563 | /* out_info.baud_base = ? */ | |
1564 | out_info.close_delay = port->close_delay; | |
1565 | out_info.closing_wait = port->closing_wait; | |
d8d16e47 | 1566 | if (copy_to_user(info, &out_info, sizeof(out_info))) |
1da177e4 LT |
1567 | return -EFAULT; |
1568 | return 0; | |
d8d16e47 | 1569 | } |
1da177e4 | 1570 | |
d8d16e47 JS |
1571 | static int isicom_ioctl(struct tty_struct *tty, struct file *filp, |
1572 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 1573 | { |
8070e35c | 1574 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1575 | void __user *argp = (void __user *)arg; |
1576 | int retval; | |
1577 | ||
1578 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) | |
1579 | return -ENODEV; | |
1580 | ||
1581 | switch(cmd) { | |
d8d16e47 JS |
1582 | case TCSBRK: |
1583 | retval = tty_check_change(tty); | |
1584 | if (retval) | |
1585 | return retval; | |
1586 | tty_wait_until_sent(tty, 0); | |
1587 | if (!arg) | |
1588 | isicom_send_break(port, HZ/4); | |
1589 | return 0; | |
1590 | ||
1591 | case TCSBRKP: | |
1592 | retval = tty_check_change(tty); | |
1593 | if (retval) | |
1594 | return retval; | |
1595 | tty_wait_until_sent(tty, 0); | |
1596 | isicom_send_break(port, arg ? arg * (HZ/10) : HZ/4); | |
1597 | return 0; | |
1598 | ||
1599 | case TIOCGSOFTCAR: | |
1600 | return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp); | |
1601 | ||
1602 | case TIOCSSOFTCAR: | |
1603 | if (get_user(arg, (unsigned long __user *) argp)) | |
1604 | return -EFAULT; | |
1605 | tty->termios->c_cflag = | |
1606 | ((tty->termios->c_cflag & ~CLOCAL) | | |
1607 | (arg ? CLOCAL : 0)); | |
1608 | return 0; | |
1609 | ||
1610 | case TIOCGSERIAL: | |
1611 | return isicom_get_serial_info(port, argp); | |
1612 | ||
1613 | case TIOCSSERIAL: | |
1614 | return isicom_set_serial_info(port, argp); | |
1615 | ||
1616 | default: | |
1617 | return -ENOIOCTLCMD; | |
1da177e4 LT |
1618 | } |
1619 | return 0; | |
1620 | } | |
1621 | ||
1622 | /* set_termios et all */ | |
d8d16e47 JS |
1623 | static void isicom_set_termios(struct tty_struct *tty, |
1624 | struct termios *old_termios) | |
1da177e4 | 1625 | { |
8070e35c | 1626 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1627 | |
1da177e4 LT |
1628 | if (isicom_paranoia_check(port, tty->name, "isicom_set_termios")) |
1629 | return; | |
d8d16e47 | 1630 | |
1da177e4 | 1631 | if (tty->termios->c_cflag == old_termios->c_cflag && |
d8d16e47 | 1632 | tty->termios->c_iflag == old_termios->c_iflag) |
1da177e4 | 1633 | return; |
d8d16e47 | 1634 | |
1da177e4 | 1635 | isicom_config_port(port); |
d8d16e47 | 1636 | |
1da177e4 | 1637 | if ((old_termios->c_cflag & CRTSCTS) && |
d8d16e47 | 1638 | !(tty->termios->c_cflag & CRTSCTS)) { |
1da177e4 | 1639 | tty->hw_stopped = 0; |
d8d16e47 JS |
1640 | isicom_start(tty); |
1641 | } | |
1da177e4 LT |
1642 | } |
1643 | ||
1644 | /* throttle et all */ | |
d8d16e47 | 1645 | static void isicom_throttle(struct tty_struct *tty) |
1da177e4 | 1646 | { |
8070e35c | 1647 | struct isi_port *port = tty->driver_data; |
d8d16e47 JS |
1648 | struct isi_board *card = port->card; |
1649 | ||
1da177e4 LT |
1650 | if (isicom_paranoia_check(port, tty->name, "isicom_throttle")) |
1651 | return; | |
d8d16e47 | 1652 | |
1da177e4 LT |
1653 | /* tell the card that this port cannot handle any more data for now */ |
1654 | card->port_status &= ~(1 << port->channel); | |
1655 | outw(card->port_status, card->base + 0x02); | |
1656 | } | |
1657 | ||
1658 | /* unthrottle et all */ | |
d8d16e47 | 1659 | static void isicom_unthrottle(struct tty_struct *tty) |
1da177e4 | 1660 | { |
8070e35c | 1661 | struct isi_port *port = tty->driver_data; |
d8d16e47 JS |
1662 | struct isi_board *card = port->card; |
1663 | ||
1da177e4 LT |
1664 | if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle")) |
1665 | return; | |
d8d16e47 | 1666 | |
1da177e4 LT |
1667 | /* tell the card that this port is ready to accept more data */ |
1668 | card->port_status |= (1 << port->channel); | |
1669 | outw(card->port_status, card->base + 0x02); | |
1670 | } | |
1671 | ||
1672 | /* stop et all */ | |
d8d16e47 | 1673 | static void isicom_stop(struct tty_struct *tty) |
1da177e4 | 1674 | { |
8070e35c | 1675 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1676 | |
1677 | if (isicom_paranoia_check(port, tty->name, "isicom_stop")) | |
1678 | return; | |
d8d16e47 | 1679 | |
1da177e4 LT |
1680 | /* this tells the transmitter not to consider this port for |
1681 | data output to the card. */ | |
1682 | port->status &= ~ISI_TXOK; | |
1683 | } | |
1684 | ||
1685 | /* start et all */ | |
d8d16e47 | 1686 | static void isicom_start(struct tty_struct *tty) |
1da177e4 | 1687 | { |
8070e35c | 1688 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1689 | |
1da177e4 LT |
1690 | if (isicom_paranoia_check(port, tty->name, "isicom_start")) |
1691 | return; | |
d8d16e47 | 1692 | |
1da177e4 LT |
1693 | /* this tells the transmitter to consider this port for |
1694 | data output to the card. */ | |
1695 | port->status |= ISI_TXOK; | |
1696 | } | |
1697 | ||
1698 | /* hangup et all */ | |
d8d16e47 | 1699 | static void do_isicom_hangup(void *data) |
1da177e4 | 1700 | { |
8070e35c | 1701 | struct isi_port *port = data; |
d8d16e47 JS |
1702 | struct tty_struct *tty; |
1703 | ||
1da177e4 LT |
1704 | tty = port->tty; |
1705 | if (tty) | |
1706 | tty_hangup(tty); | |
1707 | } | |
1708 | ||
d8d16e47 | 1709 | static void isicom_hangup(struct tty_struct *tty) |
1da177e4 | 1710 | { |
8070e35c | 1711 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1712 | |
1da177e4 LT |
1713 | if (isicom_paranoia_check(port, tty->name, "isicom_hangup")) |
1714 | return; | |
d8d16e47 | 1715 | |
1da177e4 LT |
1716 | isicom_shutdown_port(port); |
1717 | port->count = 0; | |
1718 | port->flags &= ~ASYNC_NORMAL_ACTIVE; | |
1719 | port->tty = NULL; | |
1720 | wake_up_interruptible(&port->open_wait); | |
1721 | } | |
1722 | ||
1723 | /* flush_buffer et all */ | |
d8d16e47 | 1724 | static void isicom_flush_buffer(struct tty_struct *tty) |
1da177e4 | 1725 | { |
8070e35c | 1726 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1727 | struct isi_board *card = port->card; |
1da177e4 | 1728 | unsigned long flags; |
d8d16e47 | 1729 | |
1da177e4 LT |
1730 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer")) |
1731 | return; | |
d8d16e47 | 1732 | |
1da177e4 LT |
1733 | spin_lock_irqsave(&card->card_lock, flags); |
1734 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; | |
1735 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1736 | |
1da177e4 LT |
1737 | wake_up_interruptible(&tty->write_wait); |
1738 | tty_wakeup(tty); | |
1739 | } | |
1740 | ||
1741 | ||
4b849727 | 1742 | static int __devinit register_ioregion(void) |
1da177e4 LT |
1743 | { |
1744 | int count, done=0; | |
1745 | for (count=0; count < BOARD_COUNT; count++ ) { | |
1746 | if (isi_card[count].base) | |
1747 | if (!request_region(isi_card[count].base,16,ISICOM_NAME)) { | |
8070e35c | 1748 | printk(KERN_DEBUG "ISICOM: I/O Region 0x%lx-0x%lx is busy. Card%d will be disabled.\n", |
1da177e4 LT |
1749 | isi_card[count].base,isi_card[count].base+15,count+1); |
1750 | isi_card[count].base=0; | |
1751 | done++; | |
1752 | } | |
1753 | } | |
1754 | return done; | |
1755 | } | |
1756 | ||
4b849727 | 1757 | static void unregister_ioregion(void) |
1da177e4 LT |
1758 | { |
1759 | int count; | |
d8d16e47 | 1760 | for (count=0; count < BOARD_COUNT; count++ ) |
1da177e4 LT |
1761 | if (isi_card[count].base) { |
1762 | release_region(isi_card[count].base,16); | |
d8d16e47 | 1763 | #ifdef ISICOM_DEBUG |
8070e35c | 1764 | printk(KERN_DEBUG "ISICOM: I/O Region 0x%lx-0x%lx released for Card%d.\n",isi_card[count].base,isi_card[count].base+15,count+1); |
d8d16e47 | 1765 | #endif |
1da177e4 LT |
1766 | } |
1767 | } | |
1768 | ||
1769 | static struct tty_operations isicom_ops = { | |
d8d16e47 JS |
1770 | .open = isicom_open, |
1771 | .close = isicom_close, | |
1772 | .write = isicom_write, | |
1773 | .put_char = isicom_put_char, | |
1774 | .flush_chars = isicom_flush_chars, | |
1775 | .write_room = isicom_write_room, | |
1da177e4 | 1776 | .chars_in_buffer = isicom_chars_in_buffer, |
d8d16e47 JS |
1777 | .ioctl = isicom_ioctl, |
1778 | .set_termios = isicom_set_termios, | |
1779 | .throttle = isicom_throttle, | |
1780 | .unthrottle = isicom_unthrottle, | |
1781 | .stop = isicom_stop, | |
1782 | .start = isicom_start, | |
1783 | .hangup = isicom_hangup, | |
1784 | .flush_buffer = isicom_flush_buffer, | |
1785 | .tiocmget = isicom_tiocmget, | |
1786 | .tiocmset = isicom_tiocmset, | |
1da177e4 LT |
1787 | }; |
1788 | ||
4b849727 | 1789 | static int __devinit register_drivers(void) |
1da177e4 LT |
1790 | { |
1791 | int error; | |
1792 | ||
1793 | /* tty driver structure initialization */ | |
1794 | isicom_normal = alloc_tty_driver(PORT_COUNT); | |
1795 | if (!isicom_normal) | |
1796 | return -ENOMEM; | |
1797 | ||
1798 | isicom_normal->owner = THIS_MODULE; | |
1799 | isicom_normal->name = "ttyM"; | |
1800 | isicom_normal->devfs_name = "isicom/"; | |
1801 | isicom_normal->major = ISICOM_NMAJOR; | |
1802 | isicom_normal->minor_start = 0; | |
1803 | isicom_normal->type = TTY_DRIVER_TYPE_SERIAL; | |
1804 | isicom_normal->subtype = SERIAL_TYPE_NORMAL; | |
1805 | isicom_normal->init_termios = tty_std_termios; | |
d8d16e47 | 1806 | isicom_normal->init_termios.c_cflag = |
1da177e4 LT |
1807 | B9600 | CS8 | CREAD | HUPCL |CLOCAL; |
1808 | isicom_normal->flags = TTY_DRIVER_REAL_RAW; | |
1809 | tty_set_operations(isicom_normal, &isicom_ops); | |
d8d16e47 | 1810 | |
1da177e4 LT |
1811 | if ((error=tty_register_driver(isicom_normal))!=0) { |
1812 | printk(KERN_DEBUG "ISICOM: Couldn't register the dialin driver, error=%d\n", | |
1813 | error); | |
1814 | put_tty_driver(isicom_normal); | |
1815 | return error; | |
1816 | } | |
1817 | return 0; | |
1818 | } | |
1819 | ||
4b849727 | 1820 | static void unregister_drivers(void) |
1da177e4 LT |
1821 | { |
1822 | int error = tty_unregister_driver(isicom_normal); | |
1823 | if (error) | |
1824 | printk(KERN_DEBUG "ISICOM: couldn't unregister normal driver error=%d.\n",error); | |
1825 | put_tty_driver(isicom_normal); | |
1826 | } | |
1827 | ||
4b849727 | 1828 | static int __devinit register_isr(void) |
1da177e4 LT |
1829 | { |
1830 | int count, done=0; | |
1831 | unsigned long irqflags; | |
1832 | ||
1833 | for (count=0; count < BOARD_COUNT; count++ ) { | |
1834 | if (isi_card[count].base) { | |
d8d16e47 JS |
1835 | irqflags = (isi_card[count].isa == YES) ? |
1836 | SA_INTERRUPT : | |
1da177e4 LT |
1837 | (SA_INTERRUPT | SA_SHIRQ); |
1838 | ||
d8d16e47 JS |
1839 | if (request_irq(isi_card[count].irq, |
1840 | isicom_interrupt, | |
1841 | irqflags, | |
1da177e4 LT |
1842 | ISICOM_NAME, &isi_card[count])) { |
1843 | ||
1844 | printk(KERN_WARNING "ISICOM: Could not" | |
1845 | " install handler at Irq %d." | |
1846 | " Card%d will be disabled.\n", | |
1847 | isi_card[count].irq, count+1); | |
1848 | ||
1849 | release_region(isi_card[count].base,16); | |
1850 | isi_card[count].base=0; | |
1851 | } | |
1852 | else | |
1853 | done++; | |
d8d16e47 | 1854 | } |
1da177e4 LT |
1855 | } |
1856 | return done; | |
1857 | } | |
1858 | ||
1859 | static void __exit unregister_isr(void) | |
1860 | { | |
1861 | int count; | |
1862 | ||
1863 | for (count=0; count < BOARD_COUNT; count++ ) { | |
1864 | if (isi_card[count].base) | |
1865 | free_irq(isi_card[count].irq, &isi_card[count]); | |
1866 | } | |
1867 | } | |
1868 | ||
4b849727 | 1869 | static int __devinit isicom_init(void) |
1da177e4 LT |
1870 | { |
1871 | int card, channel, base; | |
d8d16e47 | 1872 | struct isi_port *port; |
1da177e4 | 1873 | unsigned long page; |
d8d16e47 JS |
1874 | |
1875 | if (!tmp_buf) { | |
1da177e4 | 1876 | page = get_zeroed_page(GFP_KERNEL); |
d8d16e47 JS |
1877 | if (!page) { |
1878 | #ifdef ISICOM_DEBUG | |
1879 | printk(KERN_DEBUG "ISICOM: Couldn't allocate page for tmp_buf.\n"); | |
1da177e4 LT |
1880 | #else |
1881 | printk(KERN_ERR "ISICOM: Not enough memory...\n"); | |
d8d16e47 JS |
1882 | #endif |
1883 | return 0; | |
1884 | } | |
1885 | tmp_buf = (unsigned char *) page; | |
1da177e4 | 1886 | } |
d8d16e47 JS |
1887 | |
1888 | if (!register_ioregion()) | |
1da177e4 LT |
1889 | { |
1890 | printk(KERN_ERR "ISICOM: All required I/O space found busy.\n"); | |
1891 | free_page((unsigned long)tmp_buf); | |
1892 | return 0; | |
1893 | } | |
d8d16e47 | 1894 | if (register_drivers()) |
1da177e4 LT |
1895 | { |
1896 | unregister_ioregion(); | |
1897 | free_page((unsigned long)tmp_buf); | |
1898 | return 0; | |
1899 | } | |
d8d16e47 | 1900 | if (!register_isr()) |
1da177e4 LT |
1901 | { |
1902 | unregister_drivers(); | |
1903 | /* ioports already uregistered in register_isr */ | |
1904 | free_page((unsigned long)tmp_buf); | |
d8d16e47 | 1905 | return 0; |
1da177e4 | 1906 | } |
d8d16e47 | 1907 | |
1da177e4 LT |
1908 | memset(isi_ports, 0, sizeof(isi_ports)); |
1909 | for (card = 0; card < BOARD_COUNT; card++) { | |
1910 | port = &isi_ports[card * 16]; | |
1911 | isi_card[card].ports = port; | |
1912 | spin_lock_init(&isi_card[card].card_lock); | |
1913 | base = isi_card[card].base; | |
1914 | for (channel = 0; channel < 16; channel++, port++) { | |
1915 | port->magic = ISICOM_MAGIC; | |
1916 | port->card = &isi_card[card]; | |
1917 | port->channel = channel; | |
d8d16e47 JS |
1918 | port->close_delay = 50 * HZ/100; |
1919 | port->closing_wait = 3000 * HZ/100; | |
1920 | INIT_WORK(&port->hangup_tq, do_isicom_hangup, port); | |
1921 | INIT_WORK(&port->bh_tqueue, isicom_bottomhalf, port); | |
1922 | port->status = 0; | |
1923 | init_waitqueue_head(&port->open_wait); | |
1da177e4 LT |
1924 | init_waitqueue_head(&port->close_wait); |
1925 | /* . . . */ | |
d8d16e47 JS |
1926 | } |
1927 | } | |
1928 | ||
1929 | return 1; | |
1da177e4 LT |
1930 | } |
1931 | ||
1932 | /* | |
1933 | * Insmod can set static symbols so keep these static | |
1934 | */ | |
d8d16e47 | 1935 | |
1da177e4 LT |
1936 | static int io[4]; |
1937 | static int irq[4]; | |
1938 | ||
1939 | MODULE_AUTHOR("MultiTech"); | |
1940 | MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech"); | |
1941 | MODULE_LICENSE("GPL"); | |
1942 | module_param_array(io, int, NULL, 0); | |
1943 | MODULE_PARM_DESC(io, "I/O ports for the cards"); | |
1944 | module_param_array(irq, int, NULL, 0); | |
1945 | MODULE_PARM_DESC(irq, "Interrupts for the cards"); | |
1946 | ||
1947 | static int __devinit isicom_setup(void) | |
1948 | { | |
1949 | struct pci_dev *dev = NULL; | |
1950 | int retval, card, idx, count; | |
1951 | unsigned char pciirq; | |
1952 | unsigned int ioaddr; | |
d8d16e47 | 1953 | |
1da177e4 | 1954 | card = 0; |
d8d16e47 | 1955 | for (idx=0; idx < BOARD_COUNT; idx++) { |
1da177e4 LT |
1956 | if (io[idx]) { |
1957 | isi_card[idx].base=io[idx]; | |
1958 | isi_card[idx].irq=irq[idx]; | |
1959 | isi_card[idx].isa=YES; | |
1960 | card++; | |
1961 | } | |
1962 | else { | |
1963 | isi_card[idx].base = 0; | |
1964 | isi_card[idx].irq = 0; | |
1965 | } | |
1966 | } | |
d8d16e47 | 1967 | |
1da177e4 LT |
1968 | for (idx=0 ;idx < card; idx++) { |
1969 | if (!((isi_card[idx].irq==2)||(isi_card[idx].irq==3)|| | |
d8d16e47 JS |
1970 | (isi_card[idx].irq==4)||(isi_card[idx].irq==5)|| |
1971 | (isi_card[idx].irq==7)||(isi_card[idx].irq==10)|| | |
1972 | (isi_card[idx].irq==11)||(isi_card[idx].irq==12)|| | |
1973 | (isi_card[idx].irq==15))) { | |
1974 | ||
1da177e4 LT |
1975 | if (isi_card[idx].base) { |
1976 | printk(KERN_ERR "ISICOM: Irq %d unsupported. Disabling Card%d...\n", | |
1977 | isi_card[idx].irq, idx+1); | |
1978 | isi_card[idx].base=0; | |
1979 | card--; | |
d8d16e47 | 1980 | } |
1da177e4 | 1981 | } |
d8d16e47 JS |
1982 | } |
1983 | ||
1da177e4 LT |
1984 | if (card < BOARD_COUNT) { |
1985 | for (idx=0; idx < DEVID_COUNT; idx++) { | |
1986 | dev = NULL; | |
1987 | for (;;){ | |
1988 | if (!(dev = pci_find_device(VENDOR_ID, isicom_pci_tbl[idx].device, dev))) | |
1989 | break; | |
1990 | if (card >= BOARD_COUNT) | |
1991 | break; | |
d8d16e47 | 1992 | |
1da177e4 LT |
1993 | if (pci_enable_device(dev)) |
1994 | break; | |
1995 | ||
1996 | /* found a PCI ISI card! */ | |
d8d16e47 JS |
1997 | ioaddr = pci_resource_start (dev, 3); |
1998 | /* i.e at offset 0x1c in the | |
1999 | * PCI configuration register | |
2000 | * space. | |
2001 | */ | |
1da177e4 LT |
2002 | pciirq = dev->irq; |
2003 | printk(KERN_INFO "ISI PCI Card(Device ID 0x%x)\n", isicom_pci_tbl[idx].device); | |
2004 | /* | |
2005 | * allot the first empty slot in the array | |
d8d16e47 JS |
2006 | */ |
2007 | for (count=0; count < BOARD_COUNT; count++) { | |
1da177e4 LT |
2008 | if (isi_card[count].base == 0) { |
2009 | isi_card[count].base = ioaddr; | |
2010 | isi_card[count].irq = pciirq; | |
2011 | isi_card[count].isa = NO; | |
2012 | card++; | |
2013 | break; | |
2014 | } | |
2015 | } | |
d8d16e47 | 2016 | } |
1da177e4 LT |
2017 | if (card >= BOARD_COUNT) break; |
2018 | } | |
2019 | } | |
d8d16e47 | 2020 | |
1da177e4 | 2021 | if (!(isi_card[0].base || isi_card[1].base || isi_card[2].base || isi_card[3].base)) { |
d8d16e47 | 2022 | printk(KERN_ERR "ISICOM: No valid card configuration. Driver cannot be initialized...\n"); |
1da177e4 | 2023 | return -EIO; |
d8d16e47 | 2024 | } |
1da177e4 LT |
2025 | |
2026 | retval = misc_register(&isiloader_device); | |
2027 | if (retval < 0) { | |
2028 | printk(KERN_ERR "ISICOM: Unable to register firmware loader driver.\n"); | |
2029 | return retval; | |
2030 | } | |
d8d16e47 | 2031 | |
1da177e4 | 2032 | if (!isicom_init()) { |
d8d16e47 | 2033 | if (misc_deregister(&isiloader_device)) |
1da177e4 LT |
2034 | printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n"); |
2035 | return -EIO; | |
2036 | } | |
d8d16e47 | 2037 | |
1da177e4 LT |
2038 | init_timer(&tx); |
2039 | tx.expires = jiffies + 1; | |
2040 | tx.data = 0; | |
2041 | tx.function = isicom_tx; | |
2042 | re_schedule = 1; | |
2043 | add_timer(&tx); | |
d8d16e47 | 2044 | |
1da177e4 LT |
2045 | return 0; |
2046 | } | |
2047 | ||
2048 | static void __exit isicom_exit(void) | |
2049 | { | |
2050 | re_schedule = 0; | |
2051 | /* FIXME */ | |
2052 | msleep(1000); | |
2053 | unregister_isr(); | |
2054 | unregister_drivers(); | |
d8d16e47 JS |
2055 | unregister_ioregion(); |
2056 | if (tmp_buf) | |
1da177e4 LT |
2057 | free_page((unsigned long)tmp_buf); |
2058 | if (misc_deregister(&isiloader_device)) | |
2059 | printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n"); | |
2060 | } | |
2061 | ||
2062 | module_init(isicom_setup); | |
2063 | module_exit(isicom_exit); |