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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 | ||
aaa246ea JS |
138 | #define InterruptTheCard(base) outw(0, (base) + 0xc) |
139 | #define ClearInterrupt(base) inw((base) + 0x0a) | |
140 | ||
141 | #ifdef DEBUG | |
142 | #define pr_dbg(str...) printk(KERN_DEBUG "ISICOM: " str) | |
143 | #define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c)) | |
144 | #else | |
145 | #define pr_dbg(str...) do { } while (0) | |
146 | #define isicom_paranoia_check(a, b, c) 0 | |
147 | #endif | |
148 | ||
1da177e4 LT |
149 | static struct pci_device_id isicom_pci_tbl[] = { |
150 | { VENDOR_ID, 0x2028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
151 | { VENDOR_ID, 0x2051, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
152 | { VENDOR_ID, 0x2052, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
153 | { VENDOR_ID, 0x2053, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
154 | { VENDOR_ID, 0x2054, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
155 | { VENDOR_ID, 0x2055, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
156 | { VENDOR_ID, 0x2056, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
157 | { VENDOR_ID, 0x2057, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
158 | { VENDOR_ID, 0x2058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
159 | { 0 } | |
160 | }; | |
161 | MODULE_DEVICE_TABLE(pci, isicom_pci_tbl); | |
162 | ||
163 | static int prev_card = 3; /* start servicing isi_card[0] */ | |
164 | static struct tty_driver *isicom_normal; | |
165 | ||
166 | static struct timer_list tx; | |
167 | static char re_schedule = 1; | |
1da177e4 LT |
168 | |
169 | static int ISILoad_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg); | |
170 | ||
171 | static void isicom_tx(unsigned long _data); | |
d8d16e47 | 172 | static void isicom_start(struct tty_struct *tty); |
1da177e4 | 173 | |
d8d16e47 | 174 | static unsigned char *tmp_buf; |
1da177e4 LT |
175 | |
176 | /* baud index mappings from linux defns to isi */ | |
177 | ||
178 | static signed char linuxb_to_isib[] = { | |
d8d16e47 | 179 | -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19 |
1da177e4 LT |
180 | }; |
181 | ||
182 | struct isi_board { | |
8070e35c | 183 | unsigned long base; |
1da177e4 LT |
184 | unsigned char irq; |
185 | unsigned char port_count; | |
186 | unsigned short status; | |
187 | unsigned short port_status; /* each bit represents a single port */ | |
188 | unsigned short shift_count; | |
189 | struct isi_port * ports; | |
190 | signed char count; | |
191 | unsigned char isa; | |
192 | spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */ | |
193 | unsigned long flags; | |
194 | }; | |
195 | ||
196 | struct isi_port { | |
197 | unsigned short magic; | |
198 | unsigned int flags; | |
199 | int count; | |
200 | int blocked_open; | |
201 | int close_delay; | |
8070e35c JS |
202 | u16 channel; |
203 | u16 status; | |
204 | u16 closing_wait; | |
1da177e4 LT |
205 | struct isi_board * card; |
206 | struct tty_struct * tty; | |
207 | wait_queue_head_t close_wait; | |
208 | wait_queue_head_t open_wait; | |
209 | struct work_struct hangup_tq; | |
210 | struct work_struct bh_tqueue; | |
211 | unsigned char * xmit_buf; | |
212 | int xmit_head; | |
213 | int xmit_tail; | |
214 | int xmit_cnt; | |
215 | }; | |
216 | ||
217 | static struct isi_board isi_card[BOARD_COUNT]; | |
218 | static struct isi_port isi_ports[PORT_COUNT]; | |
219 | ||
220 | /* | |
221 | * Locking functions for card level locking. We need to own both | |
222 | * the kernel lock for the card and have the card in a position that | |
223 | * it wants to talk. | |
224 | */ | |
d8d16e47 | 225 | |
1da177e4 LT |
226 | static int lock_card(struct isi_board *card) |
227 | { | |
228 | char retries; | |
8070e35c | 229 | unsigned long base = card->base; |
1da177e4 LT |
230 | |
231 | for (retries = 0; retries < 100; retries++) { | |
232 | spin_lock_irqsave(&card->card_lock, card->flags); | |
233 | if (inw(base + 0xe) & 0x1) { | |
d8d16e47 | 234 | return 1; |
1da177e4 LT |
235 | } else { |
236 | spin_unlock_irqrestore(&card->card_lock, card->flags); | |
237 | udelay(1000); /* 1ms */ | |
238 | } | |
239 | } | |
8070e35c | 240 | printk(KERN_WARNING "ISICOM: Failed to lock Card (0x%lx)\n", card->base); |
1da177e4 LT |
241 | return 0; /* Failed to aquire the card! */ |
242 | } | |
243 | ||
244 | static int lock_card_at_interrupt(struct isi_board *card) | |
245 | { | |
246 | unsigned char retries; | |
8070e35c | 247 | unsigned long base = card->base; |
1da177e4 LT |
248 | |
249 | for (retries = 0; retries < 200; retries++) { | |
250 | spin_lock_irqsave(&card->card_lock, card->flags); | |
251 | ||
252 | if (inw(base + 0xe) & 0x1) | |
d8d16e47 | 253 | return 1; |
1da177e4 LT |
254 | else |
255 | spin_unlock_irqrestore(&card->card_lock, card->flags); | |
256 | } | |
257 | /* Failing in interrupt is an acceptable event */ | |
258 | return 0; /* Failed to aquire the card! */ | |
259 | } | |
260 | ||
261 | static void unlock_card(struct isi_board *card) | |
262 | { | |
263 | spin_unlock_irqrestore(&card->card_lock, card->flags); | |
264 | } | |
265 | ||
266 | /* | |
267 | * ISI Card specific ops ... | |
268 | */ | |
d8d16e47 JS |
269 | |
270 | static void raise_dtr(struct isi_port *port) | |
1da177e4 | 271 | { |
d8d16e47 | 272 | struct isi_board *card = port->card; |
8070e35c JS |
273 | unsigned long base = card->base; |
274 | u16 channel = port->channel; | |
1da177e4 LT |
275 | |
276 | if (!lock_card(card)) | |
277 | return; | |
278 | ||
d8d16e47 | 279 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 LT |
280 | outw(0x0504, base); |
281 | InterruptTheCard(base); | |
282 | port->status |= ISI_DTR; | |
283 | unlock_card(card); | |
284 | } | |
285 | ||
d8d16e47 JS |
286 | static inline void drop_dtr(struct isi_port *port) |
287 | { | |
288 | struct isi_board *card = port->card; | |
8070e35c JS |
289 | unsigned long base = card->base; |
290 | u16 channel = port->channel; | |
1da177e4 LT |
291 | |
292 | if (!lock_card(card)) | |
293 | return; | |
294 | ||
d8d16e47 | 295 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 296 | outw(0x0404, base); |
d8d16e47 | 297 | InterruptTheCard(base); |
1da177e4 LT |
298 | port->status &= ~ISI_DTR; |
299 | unlock_card(card); | |
300 | } | |
301 | ||
d8d16e47 | 302 | static inline void raise_rts(struct isi_port *port) |
1da177e4 | 303 | { |
d8d16e47 | 304 | struct isi_board *card = port->card; |
8070e35c JS |
305 | unsigned long base = card->base; |
306 | u16 channel = port->channel; | |
1da177e4 LT |
307 | |
308 | if (!lock_card(card)) | |
309 | return; | |
310 | ||
d8d16e47 | 311 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 312 | outw(0x0a04, base); |
d8d16e47 | 313 | InterruptTheCard(base); |
1da177e4 LT |
314 | port->status |= ISI_RTS; |
315 | unlock_card(card); | |
316 | } | |
d8d16e47 | 317 | static inline void drop_rts(struct isi_port *port) |
1da177e4 | 318 | { |
d8d16e47 | 319 | struct isi_board *card = port->card; |
8070e35c JS |
320 | unsigned long base = card->base; |
321 | u16 channel = port->channel; | |
1da177e4 LT |
322 | |
323 | if (!lock_card(card)) | |
324 | return; | |
325 | ||
d8d16e47 | 326 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 327 | outw(0x0804, base); |
d8d16e47 | 328 | InterruptTheCard(base); |
1da177e4 LT |
329 | port->status &= ~ISI_RTS; |
330 | unlock_card(card); | |
331 | } | |
332 | ||
d8d16e47 | 333 | static inline void raise_dtr_rts(struct isi_port *port) |
1da177e4 | 334 | { |
d8d16e47 | 335 | struct isi_board *card = port->card; |
8070e35c JS |
336 | unsigned long base = card->base; |
337 | u16 channel = port->channel; | |
1da177e4 LT |
338 | |
339 | if (!lock_card(card)) | |
340 | return; | |
341 | ||
d8d16e47 | 342 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 LT |
343 | outw(0x0f04, base); |
344 | InterruptTheCard(base); | |
345 | port->status |= (ISI_DTR | ISI_RTS); | |
346 | unlock_card(card); | |
347 | } | |
348 | ||
d8d16e47 | 349 | static void drop_dtr_rts(struct isi_port *port) |
1da177e4 | 350 | { |
d8d16e47 | 351 | struct isi_board *card = port->card; |
8070e35c JS |
352 | unsigned long base = card->base; |
353 | u16 channel = port->channel; | |
1da177e4 LT |
354 | |
355 | if (!lock_card(card)) | |
356 | return; | |
357 | ||
d8d16e47 | 358 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 359 | outw(0x0c04, base); |
d8d16e47 | 360 | InterruptTheCard(base); |
1da177e4 LT |
361 | port->status &= ~(ISI_RTS | ISI_DTR); |
362 | unlock_card(card); | |
363 | } | |
364 | ||
d8d16e47 | 365 | static inline void kill_queue(struct isi_port *port, short queue) |
1da177e4 | 366 | { |
d8d16e47 | 367 | struct isi_board *card = port->card; |
8070e35c JS |
368 | unsigned long base = card->base; |
369 | u16 channel = port->channel; | |
1da177e4 LT |
370 | |
371 | if (!lock_card(card)) | |
372 | return; | |
373 | ||
d8d16e47 | 374 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 375 | outw((queue << 8) | 0x06, base); |
d8d16e47 | 376 | InterruptTheCard(base); |
1da177e4 LT |
377 | unlock_card(card); |
378 | } | |
379 | ||
380 | ||
d8d16e47 | 381 | /* |
1da177e4 LT |
382 | * Firmware loader driver specific routines. This needs to mostly die |
383 | * and be replaced with request_firmware. | |
384 | */ | |
385 | ||
386 | static struct file_operations ISILoad_fops = { | |
387 | .owner = THIS_MODULE, | |
388 | .ioctl = ISILoad_ioctl, | |
389 | }; | |
390 | ||
391 | static struct miscdevice isiloader_device = { | |
392 | ISILOAD_MISC_MINOR, "isictl", &ISILoad_fops | |
393 | }; | |
394 | ||
d8d16e47 | 395 | |
8070e35c | 396 | static inline int WaitTillCardIsFree(unsigned long base) |
1da177e4 LT |
397 | { |
398 | unsigned long count=0; | |
399 | while( (!(inw(base+0xe) & 0x1)) && (count++ < 6000000)); | |
d8d16e47 | 400 | if (inw(base+0xe)&0x1) |
1da177e4 LT |
401 | return 0; |
402 | else | |
403 | return 1; | |
404 | } | |
405 | ||
406 | static int ISILoad_ioctl(struct inode *inode, struct file *filp, | |
d8d16e47 | 407 | unsigned int cmd, unsigned long arg) |
1da177e4 LT |
408 | { |
409 | unsigned int card, i, j, signature, status, portcount = 0; | |
8070e35c JS |
410 | unsigned long t, base; |
411 | u16 word_count; | |
1da177e4 LT |
412 | bin_frame frame; |
413 | void __user *argp = (void __user *)arg; | |
414 | /* exec_record exec_rec; */ | |
d8d16e47 JS |
415 | |
416 | if (get_user(card, (int __user *)argp)) | |
1da177e4 | 417 | return -EFAULT; |
d8d16e47 JS |
418 | |
419 | if (card < 0 || card >= BOARD_COUNT) | |
1da177e4 | 420 | return -ENXIO; |
d8d16e47 | 421 | |
1da177e4 | 422 | base=isi_card[card].base; |
d8d16e47 JS |
423 | |
424 | if (base==0) | |
1da177e4 | 425 | return -ENXIO; /* disabled or not used */ |
d8d16e47 | 426 | |
1da177e4 | 427 | switch(cmd) { |
d8d16e47 JS |
428 | case MIOCTL_RESET_CARD: |
429 | if (!capable(CAP_SYS_ADMIN)) | |
430 | return -EPERM; | |
8070e35c | 431 | printk(KERN_DEBUG "ISILoad:Resetting Card%d at 0x%lx ",card+1,base); |
d8d16e47 JS |
432 | |
433 | inw(base+0x8); | |
434 | ||
435 | for (t=jiffies+HZ/100;time_before(jiffies, t);); | |
436 | ||
437 | outw(0,base+0x8); /* Reset */ | |
438 | ||
439 | for (j=1;j<=3;j++) { | |
440 | for (t=jiffies+HZ;time_before(jiffies, t);); | |
441 | printk("."); | |
442 | } | |
443 | signature=(inw(base+0x4)) & 0xff; | |
444 | if (isi_card[card].isa) { | |
445 | ||
446 | if (!(inw(base+0xe) & 0x1) || (inw(base+0x2))) { | |
1da177e4 | 447 | #ifdef ISICOM_DEBUG |
d8d16e47 | 448 | printk("\nbase+0x2=0x%x , base+0xe=0x%x",inw(base+0x2),inw(base+0xe)); |
1da177e4 | 449 | #endif |
8070e35c | 450 | printk("\nISILoad:ISA Card%d reset failure (Possible bad I/O Port Address 0x%lx).\n",card+1,base); |
d8d16e47 JS |
451 | return -EIO; |
452 | } | |
453 | } | |
454 | else { | |
455 | portcount = inw(base+0x2); | |
456 | if (!(inw(base+0xe) & 0x1) || ((portcount!=0) && (portcount!=4) && (portcount!=8))) { | |
457 | #ifdef ISICOM_DEBUG | |
458 | printk("\nbase+0x2=0x%x , base+0xe=0x%x",inw(base+0x2),inw(base+0xe)); | |
459 | #endif | |
8070e35c | 460 | printk("\nISILoad:PCI Card%d reset failure (Possible bad I/O Port Address 0x%lx).\n",card+1,base); |
d8d16e47 | 461 | return -EIO; |
1da177e4 | 462 | } |
d8d16e47 JS |
463 | } |
464 | switch(signature) { | |
465 | case 0xa5: | |
466 | case 0xbb: | |
467 | case 0xdd: | |
468 | if (isi_card[card].isa) | |
469 | isi_card[card].port_count = 8; | |
470 | else { | |
471 | if (portcount == 4) | |
472 | isi_card[card].port_count = 4; | |
473 | else | |
474 | isi_card[card].port_count = 8; | |
475 | } | |
476 | isi_card[card].shift_count = 12; | |
477 | break; | |
478 | ||
479 | case 0xcc: isi_card[card].port_count = 16; | |
480 | isi_card[card].shift_count = 11; | |
481 | break; | |
482 | ||
8070e35c | 483 | default: printk("ISILoad:Card%d reset failure (Possible bad I/O Port Address 0x%lx).\n",card+1,base); |
d8d16e47 JS |
484 | #ifdef ISICOM_DEBUG |
485 | printk("Sig=0x%x\n",signature); | |
486 | #endif | |
487 | return -EIO; | |
488 | } | |
489 | printk("-Done\n"); | |
490 | return put_user(signature,(unsigned __user *)argp); | |
491 | ||
1da177e4 LT |
492 | case MIOCTL_LOAD_FIRMWARE: |
493 | if (!capable(CAP_SYS_ADMIN)) | |
494 | return -EPERM; | |
d8d16e47 JS |
495 | |
496 | if (copy_from_user(&frame, argp, sizeof(bin_frame))) | |
1da177e4 | 497 | return -EFAULT; |
d8d16e47 | 498 | |
1da177e4 LT |
499 | if (WaitTillCardIsFree(base)) |
500 | return -EIO; | |
d8d16e47 JS |
501 | |
502 | outw(0xf0,base); /* start upload sequence */ | |
1da177e4 | 503 | outw(0x00,base); |
d8d16e47 JS |
504 | outw((frame.addr), base); /* lsb of adderess */ |
505 | ||
1da177e4 LT |
506 | word_count=(frame.count >> 1) + frame.count % 2; |
507 | outw(word_count, base); | |
508 | InterruptTheCard(base); | |
d8d16e47 JS |
509 | |
510 | for (i=0;i<=0x2f;i++); /* a wee bit of delay */ | |
511 | ||
512 | if (WaitTillCardIsFree(base)) | |
1da177e4 | 513 | return -EIO; |
d8d16e47 | 514 | |
1da177e4 | 515 | if ((status=inw(base+0x4))!=0) { |
d8d16e47 | 516 | printk(KERN_WARNING "ISILoad:Card%d rejected load header:\nAddress:0x%x \nCount:0x%x \nStatus:0x%x \n", |
1da177e4 LT |
517 | card+1, frame.addr, frame.count, status); |
518 | return -EIO; | |
519 | } | |
520 | outsw(base, (void *) frame.bin_data, word_count); | |
d8d16e47 | 521 | |
1da177e4 | 522 | InterruptTheCard(base); |
d8d16e47 JS |
523 | |
524 | for (i=0;i<=0x0f;i++); /* another wee bit of delay */ | |
525 | ||
526 | if (WaitTillCardIsFree(base)) | |
1da177e4 | 527 | return -EIO; |
d8d16e47 | 528 | |
1da177e4 LT |
529 | if ((status=inw(base+0x4))!=0) { |
530 | printk(KERN_ERR "ISILoad:Card%d got out of sync.Card Status:0x%x\n",card+1, status); | |
531 | return -EIO; | |
d8d16e47 | 532 | } |
1da177e4 | 533 | return 0; |
d8d16e47 | 534 | |
1da177e4 LT |
535 | case MIOCTL_READ_FIRMWARE: |
536 | if (!capable(CAP_SYS_ADMIN)) | |
537 | return -EPERM; | |
d8d16e47 JS |
538 | |
539 | if (copy_from_user(&frame, argp, sizeof(bin_header))) | |
1da177e4 | 540 | return -EFAULT; |
d8d16e47 | 541 | |
1da177e4 LT |
542 | if (WaitTillCardIsFree(base)) |
543 | return -EIO; | |
d8d16e47 JS |
544 | |
545 | outw(0xf1,base); /* start download sequence */ | |
1da177e4 | 546 | outw(0x00,base); |
d8d16e47 JS |
547 | outw((frame.addr), base); /* lsb of adderess */ |
548 | ||
1da177e4 LT |
549 | word_count=(frame.count >> 1) + frame.count % 2; |
550 | outw(word_count+1, base); | |
551 | InterruptTheCard(base); | |
d8d16e47 JS |
552 | |
553 | for (i=0;i<=0xf;i++); /* a wee bit of delay */ | |
554 | ||
555 | if (WaitTillCardIsFree(base)) | |
1da177e4 | 556 | return -EIO; |
d8d16e47 | 557 | |
1da177e4 | 558 | if ((status=inw(base+0x4))!=0) { |
d8d16e47 | 559 | printk(KERN_WARNING "ISILoad:Card%d rejected verify header:\nAddress:0x%x \nCount:0x%x \nStatus:0x%x \n", |
1da177e4 LT |
560 | card+1, frame.addr, frame.count, status); |
561 | return -EIO; | |
562 | } | |
d8d16e47 | 563 | |
1da177e4 LT |
564 | inw(base); |
565 | insw(base, frame.bin_data, word_count); | |
566 | InterruptTheCard(base); | |
d8d16e47 JS |
567 | |
568 | for (i=0;i<=0x0f;i++); /* another wee bit of delay */ | |
569 | ||
570 | if (WaitTillCardIsFree(base)) | |
1da177e4 | 571 | return -EIO; |
d8d16e47 | 572 | |
1da177e4 LT |
573 | if ((status=inw(base+0x4))!=0) { |
574 | printk(KERN_ERR "ISILoad:Card%d verify got out of sync.Card Status:0x%x\n",card+1, status); | |
575 | return -EIO; | |
d8d16e47 JS |
576 | } |
577 | ||
578 | if (copy_to_user(argp, &frame, sizeof(bin_frame))) | |
1da177e4 LT |
579 | return -EFAULT; |
580 | return 0; | |
d8d16e47 | 581 | |
1da177e4 LT |
582 | case MIOCTL_XFER_CTRL: |
583 | if (!capable(CAP_SYS_ADMIN)) | |
584 | return -EPERM; | |
d8d16e47 | 585 | if (WaitTillCardIsFree(base)) |
1da177e4 | 586 | return -EIO; |
d8d16e47 | 587 | |
1da177e4 LT |
588 | outw(0xf2, base); |
589 | outw(0x800, base); | |
590 | outw(0x0, base); | |
591 | outw(0x0, base); | |
592 | InterruptTheCard(base); | |
d8d16e47 JS |
593 | outw(0x0, base+0x4); /* for ISI4608 cards */ |
594 | ||
1da177e4 | 595 | isi_card[card].status |= FIRMWARE_LOADED; |
d8d16e47 JS |
596 | return 0; |
597 | ||
1da177e4 | 598 | default: |
d8d16e47 JS |
599 | #ifdef ISICOM_DEBUG |
600 | printk(KERN_DEBUG "ISILoad: Received Ioctl cmd 0x%x.\n", cmd); | |
1da177e4 LT |
601 | #endif |
602 | return -ENOIOCTLCMD; | |
1da177e4 | 603 | } |
1da177e4 | 604 | } |
d8d16e47 | 605 | |
1da177e4 LT |
606 | |
607 | /* | |
608 | * ISICOM Driver specific routines ... | |
609 | * | |
610 | */ | |
d8d16e47 | 611 | |
aaa246ea JS |
612 | static inline int __isicom_paranoia_check(struct isi_port const *port, |
613 | char *name, const char *routine) | |
1da177e4 | 614 | { |
1da177e4 | 615 | if (!port) { |
aaa246ea JS |
616 | printk(KERN_WARNING "ISICOM: Warning: bad isicom magic for " |
617 | "dev %s in %s.\n", name, routine); | |
1da177e4 LT |
618 | return 1; |
619 | } | |
620 | if (port->magic != ISICOM_MAGIC) { | |
aaa246ea JS |
621 | printk(KERN_WARNING "ISICOM: Warning: NULL isicom port for " |
622 | "dev %s in %s.\n", name, routine); | |
1da177e4 | 623 | return 1; |
d8d16e47 | 624 | } |
aaa246ea | 625 | |
1da177e4 LT |
626 | return 0; |
627 | } | |
d8d16e47 | 628 | |
1da177e4 | 629 | /* |
d8d16e47 | 630 | * Transmitter. |
1da177e4 LT |
631 | * |
632 | * We shovel data into the card buffers on a regular basis. The card | |
633 | * will do the rest of the work for us. | |
634 | */ | |
635 | ||
636 | static void isicom_tx(unsigned long _data) | |
637 | { | |
638 | short count = (BOARD_COUNT-1), card, base; | |
639 | short txcount, wrd, residue, word_count, cnt; | |
d8d16e47 JS |
640 | struct isi_port *port; |
641 | struct tty_struct *tty; | |
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 | 683 | } |
aaa246ea JS |
684 | pr_dbg("txing %d bytes, port%d.\n", txcount, |
685 | port->channel + 1); | |
686 | outw((port->channel << isi_card[card].shift_count) | txcount, | |
687 | base); | |
1da177e4 | 688 | residue = NO; |
d8d16e47 | 689 | wrd = 0; |
1da177e4 LT |
690 | while (1) { |
691 | cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE - port->xmit_tail)); | |
692 | if (residue == YES) { | |
693 | residue = NO; | |
694 | if (cnt > 0) { | |
695 | wrd |= (port->xmit_buf[port->xmit_tail] << 8); | |
696 | port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1); | |
697 | port->xmit_cnt--; | |
698 | txcount--; | |
699 | cnt--; | |
d8d16e47 | 700 | outw(wrd, base); |
1da177e4 LT |
701 | } |
702 | else { | |
703 | outw(wrd, base); | |
704 | break; | |
705 | } | |
d8d16e47 | 706 | } |
1da177e4 LT |
707 | if (cnt <= 0) break; |
708 | word_count = cnt >> 1; | |
709 | outsw(base, port->xmit_buf+port->xmit_tail, word_count); | |
710 | port->xmit_tail = (port->xmit_tail + (word_count << 1)) & | |
711 | (SERIAL_XMIT_SIZE - 1); | |
712 | txcount -= (word_count << 1); | |
713 | port->xmit_cnt -= (word_count << 1); | |
714 | if (cnt & 0x0001) { | |
715 | residue = YES; | |
716 | wrd = port->xmit_buf[port->xmit_tail]; | |
717 | port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1); | |
718 | port->xmit_cnt--; | |
719 | txcount--; | |
720 | } | |
721 | } | |
722 | ||
723 | InterruptTheCard(base); | |
724 | if (port->xmit_cnt <= 0) | |
725 | port->status &= ~ISI_TXOK; | |
726 | if (port->xmit_cnt <= WAKEUP_CHARS) | |
727 | schedule_work(&port->bh_tqueue); | |
728 | unlock_card(&isi_card[card]); | |
d8d16e47 | 729 | } |
1da177e4 | 730 | |
d8d16e47 JS |
731 | /* schedule another tx for hopefully in about 10ms */ |
732 | sched_again: | |
aaa246ea JS |
733 | if (!re_schedule) { |
734 | re_schedule = 2; | |
735 | return; | |
736 | } | |
737 | ||
1da177e4 LT |
738 | init_timer(&tx); |
739 | tx.expires = jiffies + HZ/100; | |
740 | tx.data = 0; | |
741 | tx.function = isicom_tx; | |
742 | add_timer(&tx); | |
d8d16e47 JS |
743 | |
744 | return; | |
745 | } | |
746 | ||
1da177e4 LT |
747 | /* Interrupt handlers */ |
748 | ||
d8d16e47 JS |
749 | |
750 | static void isicom_bottomhalf(void *data) | |
1da177e4 | 751 | { |
d8d16e47 JS |
752 | struct isi_port *port = (struct isi_port *) data; |
753 | struct tty_struct *tty = port->tty; | |
754 | ||
1da177e4 LT |
755 | if (!tty) |
756 | return; | |
757 | ||
d8d16e47 | 758 | tty_wakeup(tty); |
1da177e4 | 759 | wake_up_interruptible(&tty->write_wait); |
d8d16e47 JS |
760 | } |
761 | ||
1da177e4 | 762 | /* |
d8d16e47 | 763 | * Main interrupt handler routine |
1da177e4 | 764 | */ |
d8d16e47 | 765 | |
8070e35c | 766 | static irqreturn_t isicom_interrupt(int irq, void *dev_id, struct pt_regs *regs) |
1da177e4 | 767 | { |
8070e35c | 768 | struct isi_board *card = dev_id; |
d8d16e47 JS |
769 | struct isi_port *port; |
770 | struct tty_struct *tty; | |
8070e35c JS |
771 | unsigned long base; |
772 | u16 header, word_count, count, channel; | |
1da177e4 | 773 | short byte_count; |
33f0f88f | 774 | unsigned char *rp; |
d8d16e47 | 775 | |
1da177e4 LT |
776 | if (!card || !(card->status & FIRMWARE_LOADED)) |
777 | return IRQ_NONE; | |
d8d16e47 | 778 | |
1da177e4 LT |
779 | base = card->base; |
780 | spin_lock(&card->card_lock); | |
d8d16e47 | 781 | |
1da177e4 LT |
782 | if (card->isa == NO) { |
783 | /* | |
d8d16e47 JS |
784 | * disable any interrupts from the PCI card and lower the |
785 | * interrupt line | |
1da177e4 LT |
786 | */ |
787 | outw(0x8000, base+0x04); | |
788 | ClearInterrupt(base); | |
789 | } | |
d8d16e47 | 790 | |
1da177e4 LT |
791 | inw(base); /* get the dummy word out */ |
792 | header = inw(base); | |
793 | channel = (header & 0x7800) >> card->shift_count; | |
794 | byte_count = header & 0xff; | |
795 | ||
796 | if (channel + 1 > card->port_count) { | |
8070e35c | 797 | printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%lx): %d(channel) > port_count.\n", |
1da177e4 LT |
798 | base, channel+1); |
799 | if (card->isa) | |
800 | ClearInterrupt(base); | |
801 | else | |
d8d16e47 | 802 | outw(0x0000, base+0x04); /* enable interrupts */ |
1da177e4 | 803 | spin_unlock(&card->card_lock); |
d8d16e47 | 804 | return IRQ_HANDLED; |
1da177e4 LT |
805 | } |
806 | port = card->ports + channel; | |
807 | if (!(port->flags & ASYNC_INITIALIZED)) { | |
808 | if (card->isa) | |
809 | ClearInterrupt(base); | |
810 | else | |
811 | outw(0x0000, base+0x04); /* enable interrupts */ | |
812 | return IRQ_HANDLED; | |
d8d16e47 JS |
813 | } |
814 | ||
1da177e4 LT |
815 | tty = port->tty; |
816 | if (tty == NULL) { | |
817 | word_count = byte_count >> 1; | |
818 | while(byte_count > 1) { | |
819 | inw(base); | |
820 | byte_count -= 2; | |
821 | } | |
822 | if (byte_count & 0x01) | |
823 | inw(base); | |
824 | if (card->isa == YES) | |
825 | ClearInterrupt(base); | |
826 | else | |
827 | outw(0x0000, base+0x04); /* enable interrupts */ | |
828 | spin_unlock(&card->card_lock); | |
829 | return IRQ_HANDLED; | |
830 | } | |
d8d16e47 | 831 | |
1da177e4 LT |
832 | if (header & 0x8000) { /* Status Packet */ |
833 | header = inw(base); | |
834 | switch(header & 0xff) { | |
d8d16e47 JS |
835 | case 0: /* Change in EIA signals */ |
836 | ||
837 | if (port->flags & ASYNC_CHECK_CD) { | |
838 | if (port->status & ISI_DCD) { | |
839 | if (!(header & ISI_DCD)) { | |
840 | /* Carrier has been lost */ | |
aaa246ea | 841 | pr_dbg("interrupt: DCD->low.\n"); |
d8d16e47 JS |
842 | port->status &= ~ISI_DCD; |
843 | schedule_work(&port->hangup_tq); | |
1da177e4 LT |
844 | } |
845 | } | |
846 | else { | |
d8d16e47 JS |
847 | if (header & ISI_DCD) { |
848 | /* Carrier has been detected */ | |
aaa246ea | 849 | pr_dbg("interrupt: DCD->high.\n"); |
1da177e4 | 850 | port->status |= ISI_DCD; |
d8d16e47 | 851 | wake_up_interruptible(&port->open_wait); |
1da177e4 | 852 | } |
d8d16e47 JS |
853 | } |
854 | } | |
855 | else { | |
856 | if (header & ISI_DCD) | |
857 | port->status |= ISI_DCD; | |
858 | else | |
859 | port->status &= ~ISI_DCD; | |
860 | } | |
861 | ||
862 | if (port->flags & ASYNC_CTS_FLOW) { | |
863 | if (port->tty->hw_stopped) { | |
864 | if (header & ISI_CTS) { | |
865 | port->tty->hw_stopped = 0; | |
866 | /* start tx ing */ | |
867 | port->status |= (ISI_TXOK | ISI_CTS); | |
868 | schedule_work(&port->bh_tqueue); | |
1da177e4 LT |
869 | } |
870 | } | |
871 | else { | |
d8d16e47 JS |
872 | if (!(header & ISI_CTS)) { |
873 | port->tty->hw_stopped = 1; | |
874 | /* stop tx ing */ | |
875 | port->status &= ~(ISI_TXOK | ISI_CTS); | |
876 | } | |
1da177e4 | 877 | } |
d8d16e47 JS |
878 | } |
879 | else { | |
880 | if (header & ISI_CTS) | |
881 | port->status |= ISI_CTS; | |
1da177e4 | 882 | else |
d8d16e47 JS |
883 | port->status &= ~ISI_CTS; |
884 | } | |
885 | ||
886 | if (header & ISI_DSR) | |
887 | port->status |= ISI_DSR; | |
888 | else | |
889 | port->status &= ~ISI_DSR; | |
890 | ||
891 | if (header & ISI_RI) | |
892 | port->status |= ISI_RI; | |
893 | else | |
894 | port->status &= ~ISI_RI; | |
895 | ||
896 | break; | |
897 | ||
898 | case 1: /* Received Break !!! */ | |
899 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
900 | if (port->flags & ASYNC_SAK) | |
901 | do_SAK(tty); | |
902 | tty_flip_buffer_push(tty); | |
903 | break; | |
904 | ||
905 | case 2: /* Statistics */ | |
aaa246ea | 906 | pr_dbg("isicom_interrupt: stats!!!.\n"); |
d8d16e47 JS |
907 | break; |
908 | ||
909 | default: | |
aaa246ea | 910 | pr_dbg("Intr: Unknown code in status packet.\n"); |
d8d16e47 JS |
911 | break; |
912 | } | |
1da177e4 LT |
913 | } |
914 | else { /* Data Packet */ | |
33f0f88f AC |
915 | |
916 | count = tty_prepare_flip_string(tty, &rp, byte_count & ~1); | |
aaa246ea | 917 | pr_dbg("Intr: Can rx %d of %d bytes.\n", count, byte_count); |
1da177e4 | 918 | word_count = count >> 1; |
33f0f88f | 919 | insw(base, rp, word_count); |
1da177e4 LT |
920 | byte_count -= (word_count << 1); |
921 | if (count & 0x0001) { | |
33f0f88f | 922 | tty_insert_flip_char(tty, inw(base) & 0xff, TTY_NORMAL); |
1da177e4 | 923 | byte_count -= 2; |
d8d16e47 | 924 | } |
1da177e4 | 925 | if (byte_count > 0) { |
aaa246ea JS |
926 | pr_dbg("Intr(0x%lx:%d): Flip buffer overflow! dropping " |
927 | "bytes...\n", base, channel + 1); | |
1da177e4 LT |
928 | while(byte_count > 0) { /* drain out unread xtra data */ |
929 | inw(base); | |
930 | byte_count -= 2; | |
931 | } | |
932 | } | |
33f0f88f | 933 | tty_flip_buffer_push(tty); |
1da177e4 LT |
934 | } |
935 | if (card->isa == YES) | |
936 | ClearInterrupt(base); | |
937 | else | |
d8d16e47 | 938 | outw(0x0000, base+0x04); /* enable interrupts */ |
1da177e4 | 939 | return IRQ_HANDLED; |
d8d16e47 | 940 | } |
1da177e4 | 941 | |
d8d16e47 | 942 | static void isicom_config_port(struct isi_port *port) |
1da177e4 | 943 | { |
d8d16e47 JS |
944 | struct isi_board *card = port->card; |
945 | struct tty_struct *tty; | |
1da177e4 | 946 | unsigned long baud; |
8070e35c JS |
947 | unsigned long base = card->base; |
948 | u16 channel_setup, channel = port->channel, | |
949 | shift_count = card->shift_count; | |
1da177e4 | 950 | unsigned char flow_ctrl; |
d8d16e47 | 951 | |
1da177e4 LT |
952 | if (!(tty = port->tty) || !tty->termios) |
953 | return; | |
954 | baud = C_BAUD(tty); | |
955 | if (baud & CBAUDEX) { | |
956 | baud &= ~CBAUDEX; | |
d8d16e47 | 957 | |
1da177e4 LT |
958 | /* if CBAUDEX bit is on and the baud is set to either 50 or 75 |
959 | * then the card is programmed for 57.6Kbps or 115Kbps | |
960 | * respectively. | |
d8d16e47 JS |
961 | */ |
962 | ||
1da177e4 LT |
963 | if (baud < 1 || baud > 2) |
964 | port->tty->termios->c_cflag &= ~CBAUDEX; | |
965 | else | |
966 | baud += 15; | |
d8d16e47 | 967 | } |
1da177e4 | 968 | if (baud == 15) { |
d8d16e47 JS |
969 | |
970 | /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set | |
1da177e4 LT |
971 | * by the set_serial_info ioctl ... this is done by |
972 | * the 'setserial' utility. | |
d8d16e47 JS |
973 | */ |
974 | ||
1da177e4 | 975 | if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
d8d16e47 | 976 | baud++; /* 57.6 Kbps */ |
1da177e4 | 977 | if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
d8d16e47 | 978 | baud +=2; /* 115 Kbps */ |
1da177e4 LT |
979 | } |
980 | if (linuxb_to_isib[baud] == -1) { | |
981 | /* hang up */ | |
d8d16e47 JS |
982 | drop_dtr(port); |
983 | return; | |
984 | } | |
985 | else | |
1da177e4 | 986 | raise_dtr(port); |
d8d16e47 | 987 | |
1da177e4 LT |
988 | if (lock_card(card)) { |
989 | outw(0x8000 | (channel << shift_count) |0x03, base); | |
990 | outw(linuxb_to_isib[baud] << 8 | 0x03, base); | |
991 | channel_setup = 0; | |
992 | switch(C_CSIZE(tty)) { | |
d8d16e47 JS |
993 | case CS5: |
994 | channel_setup |= ISICOM_CS5; | |
995 | break; | |
996 | case CS6: | |
997 | channel_setup |= ISICOM_CS6; | |
998 | break; | |
999 | case CS7: | |
1000 | channel_setup |= ISICOM_CS7; | |
1001 | break; | |
1002 | case CS8: | |
1003 | channel_setup |= ISICOM_CS8; | |
1004 | break; | |
1da177e4 | 1005 | } |
d8d16e47 | 1006 | |
1da177e4 LT |
1007 | if (C_CSTOPB(tty)) |
1008 | channel_setup |= ISICOM_2SB; | |
1009 | if (C_PARENB(tty)) { | |
1010 | channel_setup |= ISICOM_EVPAR; | |
1011 | if (C_PARODD(tty)) | |
d8d16e47 | 1012 | channel_setup |= ISICOM_ODPAR; |
1da177e4 | 1013 | } |
d8d16e47 | 1014 | outw(channel_setup, base); |
1da177e4 | 1015 | InterruptTheCard(base); |
d8d16e47 JS |
1016 | unlock_card(card); |
1017 | } | |
1da177e4 LT |
1018 | if (C_CLOCAL(tty)) |
1019 | port->flags &= ~ASYNC_CHECK_CD; | |
1020 | else | |
d8d16e47 JS |
1021 | port->flags |= ASYNC_CHECK_CD; |
1022 | ||
1da177e4 LT |
1023 | /* flow control settings ...*/ |
1024 | flow_ctrl = 0; | |
1025 | port->flags &= ~ASYNC_CTS_FLOW; | |
1026 | if (C_CRTSCTS(tty)) { | |
1027 | port->flags |= ASYNC_CTS_FLOW; | |
1028 | flow_ctrl |= ISICOM_CTSRTS; | |
d8d16e47 JS |
1029 | } |
1030 | if (I_IXON(tty)) | |
1da177e4 LT |
1031 | flow_ctrl |= ISICOM_RESPOND_XONXOFF; |
1032 | if (I_IXOFF(tty)) | |
d8d16e47 JS |
1033 | flow_ctrl |= ISICOM_INITIATE_XONXOFF; |
1034 | ||
1da177e4 LT |
1035 | if (lock_card(card)) { |
1036 | outw(0x8000 | (channel << shift_count) |0x04, base); | |
1037 | outw(flow_ctrl << 8 | 0x05, base); | |
1038 | outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base); | |
1039 | InterruptTheCard(base); | |
1040 | unlock_card(card); | |
1041 | } | |
d8d16e47 | 1042 | |
1da177e4 LT |
1043 | /* rx enabled -> enable port for rx on the card */ |
1044 | if (C_CREAD(tty)) { | |
1045 | card->port_status |= (1 << channel); | |
1046 | outw(card->port_status, base + 0x02); | |
1047 | } | |
1048 | } | |
1da177e4 | 1049 | |
d8d16e47 JS |
1050 | /* open et all */ |
1051 | ||
1052 | static inline void isicom_setup_board(struct isi_board *bp) | |
1da177e4 LT |
1053 | { |
1054 | int channel; | |
d8d16e47 | 1055 | struct isi_port *port; |
1da177e4 | 1056 | unsigned long flags; |
d8d16e47 | 1057 | |
1da177e4 LT |
1058 | spin_lock_irqsave(&bp->card_lock, flags); |
1059 | if (bp->status & BOARD_ACTIVE) { | |
1060 | spin_unlock_irqrestore(&bp->card_lock, flags); | |
1061 | return; | |
1062 | } | |
1063 | port = bp->ports; | |
1064 | bp->status |= BOARD_ACTIVE; | |
1065 | spin_unlock_irqrestore(&bp->card_lock, flags); | |
d8d16e47 | 1066 | for (channel = 0; channel < bp->port_count; channel++, port++) |
1da177e4 LT |
1067 | drop_dtr_rts(port); |
1068 | return; | |
1069 | } | |
d8d16e47 JS |
1070 | |
1071 | static int isicom_setup_port(struct isi_port *port) | |
1da177e4 | 1072 | { |
d8d16e47 | 1073 | struct isi_board *card = port->card; |
1da177e4 | 1074 | unsigned long flags; |
d8d16e47 | 1075 | |
1da177e4 LT |
1076 | if (port->flags & ASYNC_INITIALIZED) { |
1077 | return 0; | |
1078 | } | |
1079 | if (!port->xmit_buf) { | |
1080 | unsigned long page; | |
d8d16e47 | 1081 | |
1da177e4 LT |
1082 | if (!(page = get_zeroed_page(GFP_KERNEL))) |
1083 | return -ENOMEM; | |
d8d16e47 | 1084 | |
1da177e4 LT |
1085 | if (port->xmit_buf) { |
1086 | free_page(page); | |
1087 | return -ERESTARTSYS; | |
1088 | } | |
d8d16e47 JS |
1089 | port->xmit_buf = (unsigned char *) page; |
1090 | } | |
1da177e4 LT |
1091 | |
1092 | spin_lock_irqsave(&card->card_lock, flags); | |
1093 | if (port->tty) | |
1094 | clear_bit(TTY_IO_ERROR, &port->tty->flags); | |
1095 | if (port->count == 1) | |
1096 | card->count++; | |
d8d16e47 | 1097 | |
1da177e4 | 1098 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; |
d8d16e47 | 1099 | |
1da177e4 LT |
1100 | /* discard any residual data */ |
1101 | kill_queue(port, ISICOM_KILLTX | ISICOM_KILLRX); | |
d8d16e47 | 1102 | |
1da177e4 LT |
1103 | isicom_config_port(port); |
1104 | port->flags |= ASYNC_INITIALIZED; | |
1105 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 JS |
1106 | |
1107 | return 0; | |
1108 | } | |
1109 | ||
1110 | static int block_til_ready(struct tty_struct *tty, struct file *filp, struct isi_port *port) | |
1da177e4 | 1111 | { |
d8d16e47 | 1112 | struct isi_board *card = port->card; |
1da177e4 LT |
1113 | int do_clocal = 0, retval; |
1114 | unsigned long flags; | |
1115 | DECLARE_WAITQUEUE(wait, current); | |
1116 | ||
1117 | /* block if port is in the process of being closed */ | |
1118 | ||
1119 | if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) { | |
aaa246ea | 1120 | pr_dbg("block_til_ready: close in progress.\n"); |
1da177e4 LT |
1121 | interruptible_sleep_on(&port->close_wait); |
1122 | if (port->flags & ASYNC_HUP_NOTIFY) | |
1123 | return -EAGAIN; | |
1124 | else | |
1125 | return -ERESTARTSYS; | |
1126 | } | |
d8d16e47 | 1127 | |
1da177e4 | 1128 | /* if non-blocking mode is set ... */ |
d8d16e47 | 1129 | |
1da177e4 | 1130 | if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) { |
aaa246ea | 1131 | pr_dbg("block_til_ready: non-block mode.\n"); |
1da177e4 | 1132 | port->flags |= ASYNC_NORMAL_ACTIVE; |
d8d16e47 JS |
1133 | return 0; |
1134 | } | |
1135 | ||
1da177e4 LT |
1136 | if (C_CLOCAL(tty)) |
1137 | do_clocal = 1; | |
d8d16e47 JS |
1138 | |
1139 | /* block waiting for DCD to be asserted, and while | |
1da177e4 LT |
1140 | callout dev is busy */ |
1141 | retval = 0; | |
1142 | add_wait_queue(&port->open_wait, &wait); | |
1143 | ||
1144 | spin_lock_irqsave(&card->card_lock, flags); | |
1145 | if (!tty_hung_up_p(filp)) | |
1146 | port->count--; | |
1147 | port->blocked_open++; | |
1148 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1149 | |
1da177e4 LT |
1150 | while (1) { |
1151 | raise_dtr_rts(port); | |
1152 | ||
1153 | set_current_state(TASK_INTERRUPTIBLE); | |
d8d16e47 | 1154 | if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) { |
1da177e4 LT |
1155 | if (port->flags & ASYNC_HUP_NOTIFY) |
1156 | retval = -EAGAIN; | |
1157 | else | |
1158 | retval = -ERESTARTSYS; | |
1159 | break; | |
d8d16e47 | 1160 | } |
1da177e4 | 1161 | if (!(port->flags & ASYNC_CLOSING) && |
d8d16e47 | 1162 | (do_clocal || (port->status & ISI_DCD))) { |
1da177e4 | 1163 | break; |
d8d16e47 | 1164 | } |
1da177e4 LT |
1165 | if (signal_pending(current)) { |
1166 | retval = -ERESTARTSYS; | |
1167 | break; | |
1168 | } | |
d8d16e47 | 1169 | schedule(); |
1da177e4 LT |
1170 | } |
1171 | set_current_state(TASK_RUNNING); | |
1172 | remove_wait_queue(&port->open_wait, &wait); | |
1173 | spin_lock_irqsave(&card->card_lock, flags); | |
1174 | if (!tty_hung_up_p(filp)) | |
1175 | port->count++; | |
1176 | port->blocked_open--; | |
1177 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1178 | if (retval) | |
1179 | return retval; | |
1180 | port->flags |= ASYNC_NORMAL_ACTIVE; | |
1181 | return 0; | |
1182 | } | |
d8d16e47 JS |
1183 | |
1184 | static int isicom_open(struct tty_struct *tty, struct file *filp) | |
1da177e4 | 1185 | { |
d8d16e47 JS |
1186 | struct isi_port *port; |
1187 | struct isi_board *card; | |
1da177e4 LT |
1188 | unsigned int line, board; |
1189 | int error; | |
1190 | ||
1191 | line = tty->index; | |
1192 | if (line < 0 || line > PORT_COUNT-1) | |
1193 | return -ENODEV; | |
1194 | board = BOARD(line); | |
1195 | card = &isi_card[board]; | |
d8d16e47 | 1196 | |
1da177e4 LT |
1197 | if (!(card->status & FIRMWARE_LOADED)) |
1198 | return -ENODEV; | |
d8d16e47 | 1199 | |
1da177e4 LT |
1200 | /* open on a port greater than the port count for the card !!! */ |
1201 | if (line > ((board * 16) + card->port_count - 1)) | |
1202 | return -ENODEV; | |
1203 | ||
d8d16e47 | 1204 | port = &isi_ports[line]; |
1da177e4 LT |
1205 | if (isicom_paranoia_check(port, tty->name, "isicom_open")) |
1206 | return -ENODEV; | |
d8d16e47 JS |
1207 | |
1208 | isicom_setup_board(card); | |
1209 | ||
1da177e4 LT |
1210 | port->count++; |
1211 | tty->driver_data = port; | |
1212 | port->tty = tty; | |
1213 | if ((error = isicom_setup_port(port))!=0) | |
1214 | return error; | |
1215 | if ((error = block_til_ready(tty, filp, port))!=0) | |
1216 | return error; | |
1217 | ||
d8d16e47 | 1218 | return 0; |
1da177e4 | 1219 | } |
d8d16e47 | 1220 | |
1da177e4 LT |
1221 | /* close et all */ |
1222 | ||
d8d16e47 | 1223 | static inline void isicom_shutdown_board(struct isi_board *bp) |
1da177e4 LT |
1224 | { |
1225 | unsigned long flags; | |
1226 | ||
1227 | spin_lock_irqsave(&bp->card_lock, flags); | |
1228 | if (bp->status & BOARD_ACTIVE) { | |
1229 | bp->status &= ~BOARD_ACTIVE; | |
1230 | } | |
1231 | spin_unlock_irqrestore(&bp->card_lock, flags); | |
1232 | } | |
1233 | ||
d8d16e47 | 1234 | static void isicom_shutdown_port(struct isi_port *port) |
1da177e4 | 1235 | { |
d8d16e47 JS |
1236 | struct isi_board *card = port->card; |
1237 | struct tty_struct *tty; | |
1da177e4 | 1238 | unsigned long flags; |
d8d16e47 | 1239 | |
1da177e4 LT |
1240 | tty = port->tty; |
1241 | ||
d8d16e47 | 1242 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 LT |
1243 | if (!(port->flags & ASYNC_INITIALIZED)) { |
1244 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1245 | return; | |
1246 | } | |
1247 | if (port->xmit_buf) { | |
1248 | free_page((unsigned long) port->xmit_buf); | |
1249 | port->xmit_buf = NULL; | |
d8d16e47 | 1250 | } |
1da177e4 LT |
1251 | port->flags &= ~ASYNC_INITIALIZED; |
1252 | /* 3rd October 2000 : Vinayak P Risbud */ | |
1253 | port->tty = NULL; | |
1254 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1255 | |
1da177e4 LT |
1256 | /*Fix done by Anil .S on 30-04-2001 |
1257 | remote login through isi port has dtr toggle problem | |
1258 | due to which the carrier drops before the password prompt | |
d8d16e47 | 1259 | appears on the remote end. Now we drop the dtr only if the |
1da177e4 | 1260 | HUPCL(Hangup on close) flag is set for the tty*/ |
d8d16e47 JS |
1261 | |
1262 | if (C_HUPCL(tty)) | |
1da177e4 LT |
1263 | /* drop dtr on this port */ |
1264 | drop_dtr(port); | |
d8d16e47 JS |
1265 | |
1266 | /* any other port uninits */ | |
1da177e4 LT |
1267 | if (tty) |
1268 | set_bit(TTY_IO_ERROR, &tty->flags); | |
d8d16e47 | 1269 | |
1da177e4 | 1270 | if (--card->count < 0) { |
aaa246ea | 1271 | pr_dbg("isicom_shutdown_port: bad board(0x%lx) count %d.\n", |
1da177e4 | 1272 | card->base, card->count); |
d8d16e47 | 1273 | card->count = 0; |
1da177e4 | 1274 | } |
d8d16e47 | 1275 | |
1da177e4 | 1276 | /* last port was closed , shutdown that boad too */ |
d8d16e47 | 1277 | if (C_HUPCL(tty)) { |
1da177e4 LT |
1278 | if (!card->count) |
1279 | isicom_shutdown_board(card); | |
1280 | } | |
1281 | } | |
1282 | ||
d8d16e47 | 1283 | static void isicom_close(struct tty_struct *tty, struct file *filp) |
1da177e4 | 1284 | { |
8070e35c | 1285 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1286 | struct isi_board *card = port->card; |
1da177e4 | 1287 | unsigned long flags; |
d8d16e47 | 1288 | |
1da177e4 LT |
1289 | if (!port) |
1290 | return; | |
1291 | if (isicom_paranoia_check(port, tty->name, "isicom_close")) | |
1292 | return; | |
d8d16e47 | 1293 | |
aaa246ea | 1294 | pr_dbg("Close start!!!.\n"); |
d8d16e47 | 1295 | |
1da177e4 LT |
1296 | spin_lock_irqsave(&card->card_lock, flags); |
1297 | if (tty_hung_up_p(filp)) { | |
1298 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1299 | return; | |
1300 | } | |
d8d16e47 | 1301 | |
1da177e4 | 1302 | if (tty->count == 1 && port->count != 1) { |
8070e35c | 1303 | printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port count" |
1da177e4 LT |
1304 | "tty->count = 1 port count = %d.\n", |
1305 | card->base, port->count); | |
1306 | port->count = 1; | |
1307 | } | |
1308 | if (--port->count < 0) { | |
8070e35c | 1309 | printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port count for" |
d8d16e47 | 1310 | "channel%d = %d", card->base, port->channel, |
1da177e4 | 1311 | port->count); |
d8d16e47 | 1312 | port->count = 0; |
1da177e4 | 1313 | } |
d8d16e47 | 1314 | |
1da177e4 LT |
1315 | if (port->count) { |
1316 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1317 | return; | |
d8d16e47 | 1318 | } |
1da177e4 LT |
1319 | port->flags |= ASYNC_CLOSING; |
1320 | tty->closing = 1; | |
1321 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1322 | |
1da177e4 LT |
1323 | if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE) |
1324 | tty_wait_until_sent(tty, port->closing_wait); | |
d8d16e47 | 1325 | /* indicate to the card that no more data can be received |
1da177e4 LT |
1326 | on this port */ |
1327 | spin_lock_irqsave(&card->card_lock, flags); | |
d8d16e47 | 1328 | if (port->flags & ASYNC_INITIALIZED) { |
1da177e4 LT |
1329 | card->port_status &= ~(1 << port->channel); |
1330 | outw(card->port_status, card->base + 0x02); | |
d8d16e47 | 1331 | } |
1da177e4 LT |
1332 | isicom_shutdown_port(port); |
1333 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1334 | |
1da177e4 LT |
1335 | if (tty->driver->flush_buffer) |
1336 | tty->driver->flush_buffer(tty); | |
1337 | tty_ldisc_flush(tty); | |
1338 | ||
1339 | spin_lock_irqsave(&card->card_lock, flags); | |
1340 | tty->closing = 0; | |
1341 | ||
1342 | if (port->blocked_open) { | |
1343 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1344 | if (port->close_delay) { | |
aaa246ea | 1345 | pr_dbg("scheduling until time out.\n"); |
1da177e4 LT |
1346 | msleep_interruptible(jiffies_to_msecs(port->close_delay)); |
1347 | } | |
1348 | spin_lock_irqsave(&card->card_lock, flags); | |
1349 | wake_up_interruptible(&port->open_wait); | |
d8d16e47 | 1350 | } |
1da177e4 LT |
1351 | port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); |
1352 | wake_up_interruptible(&port->close_wait); | |
1353 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1354 | } | |
1355 | ||
1356 | /* write et all */ | |
d8d16e47 JS |
1357 | static int isicom_write(struct tty_struct *tty, const unsigned char *buf, |
1358 | int count) | |
1da177e4 | 1359 | { |
8070e35c | 1360 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1361 | struct isi_board *card = port->card; |
1da177e4 LT |
1362 | unsigned long flags; |
1363 | int cnt, total = 0; | |
1364 | ||
1365 | if (isicom_paranoia_check(port, tty->name, "isicom_write")) | |
1366 | return 0; | |
d8d16e47 | 1367 | |
1da177e4 LT |
1368 | if (!tty || !port->xmit_buf || !tmp_buf) |
1369 | return 0; | |
d8d16e47 | 1370 | |
1da177e4 | 1371 | spin_lock_irqsave(&card->card_lock, flags); |
d8d16e47 JS |
1372 | |
1373 | while(1) { | |
1da177e4 | 1374 | cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1, |
d8d16e47 JS |
1375 | SERIAL_XMIT_SIZE - port->xmit_head)); |
1376 | if (cnt <= 0) | |
1da177e4 | 1377 | break; |
d8d16e47 | 1378 | |
1da177e4 LT |
1379 | memcpy(port->xmit_buf + port->xmit_head, buf, cnt); |
1380 | port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE - 1); | |
1381 | port->xmit_cnt += cnt; | |
1382 | buf += cnt; | |
1383 | count -= cnt; | |
1384 | total += cnt; | |
d8d16e47 | 1385 | } |
1da177e4 LT |
1386 | if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
1387 | port->status |= ISI_TXOK; | |
1388 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1389 | return total; |
1da177e4 LT |
1390 | } |
1391 | ||
1392 | /* put_char et all */ | |
d8d16e47 | 1393 | static void isicom_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1394 | { |
8070e35c | 1395 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1396 | struct isi_board *card = port->card; |
1da177e4 | 1397 | unsigned long flags; |
d8d16e47 | 1398 | |
1da177e4 LT |
1399 | if (isicom_paranoia_check(port, tty->name, "isicom_put_char")) |
1400 | return; | |
d8d16e47 | 1401 | |
1da177e4 LT |
1402 | if (!tty || !port->xmit_buf) |
1403 | return; | |
1404 | ||
1405 | spin_lock_irqsave(&card->card_lock, flags); | |
1406 | if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { | |
1407 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1408 | return; | |
1409 | } | |
d8d16e47 | 1410 | |
1da177e4 LT |
1411 | port->xmit_buf[port->xmit_head++] = ch; |
1412 | port->xmit_head &= (SERIAL_XMIT_SIZE - 1); | |
1413 | port->xmit_cnt++; | |
1414 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1415 | } | |
1416 | ||
1417 | /* flush_chars et all */ | |
d8d16e47 | 1418 | static void isicom_flush_chars(struct tty_struct *tty) |
1da177e4 | 1419 | { |
8070e35c | 1420 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1421 | |
1da177e4 LT |
1422 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars")) |
1423 | return; | |
d8d16e47 | 1424 | |
1da177e4 LT |
1425 | if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || !port->xmit_buf) |
1426 | return; | |
d8d16e47 | 1427 | |
1da177e4 LT |
1428 | /* this tells the transmitter to consider this port for |
1429 | data output to the card ... that's the best we can do. */ | |
d8d16e47 | 1430 | port->status |= ISI_TXOK; |
1da177e4 LT |
1431 | } |
1432 | ||
1433 | /* write_room et all */ | |
d8d16e47 | 1434 | static int isicom_write_room(struct tty_struct *tty) |
1da177e4 | 1435 | { |
8070e35c | 1436 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1437 | int free; |
1438 | ||
1439 | if (isicom_paranoia_check(port, tty->name, "isicom_write_room")) | |
1440 | return 0; | |
d8d16e47 | 1441 | |
1da177e4 LT |
1442 | free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; |
1443 | if (free < 0) | |
1444 | free = 0; | |
1445 | return free; | |
1446 | } | |
1447 | ||
1448 | /* chars_in_buffer et all */ | |
d8d16e47 | 1449 | static int isicom_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1450 | { |
8070e35c | 1451 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1452 | if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer")) |
1453 | return 0; | |
1454 | return port->xmit_cnt; | |
1455 | } | |
1456 | ||
1457 | /* ioctl et all */ | |
d8d16e47 | 1458 | static inline void isicom_send_break(struct isi_port *port, unsigned long length) |
1da177e4 | 1459 | { |
d8d16e47 | 1460 | struct isi_board *card = port->card; |
8070e35c | 1461 | unsigned long base = card->base; |
d8d16e47 JS |
1462 | |
1463 | if (!lock_card(card)) | |
1da177e4 | 1464 | return; |
d8d16e47 | 1465 | |
1da177e4 LT |
1466 | outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base); |
1467 | outw((length & 0xff) << 8 | 0x00, base); | |
1468 | outw((length & 0xff00), base); | |
1469 | InterruptTheCard(base); | |
1470 | ||
1471 | unlock_card(card); | |
1472 | } | |
1473 | ||
1474 | static int isicom_tiocmget(struct tty_struct *tty, struct file *file) | |
1475 | { | |
8070e35c | 1476 | struct isi_port *port = tty->driver_data; |
1da177e4 | 1477 | /* just send the port status */ |
8070e35c | 1478 | u16 status = port->status; |
1da177e4 LT |
1479 | |
1480 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) | |
1481 | return -ENODEV; | |
d8d16e47 | 1482 | |
1da177e4 LT |
1483 | return ((status & ISI_RTS) ? TIOCM_RTS : 0) | |
1484 | ((status & ISI_DTR) ? TIOCM_DTR : 0) | | |
1485 | ((status & ISI_DCD) ? TIOCM_CAR : 0) | | |
1486 | ((status & ISI_DSR) ? TIOCM_DSR : 0) | | |
1487 | ((status & ISI_CTS) ? TIOCM_CTS : 0) | | |
1488 | ((status & ISI_RI ) ? TIOCM_RI : 0); | |
1489 | } | |
1490 | ||
1491 | static int isicom_tiocmset(struct tty_struct *tty, struct file *file, | |
d8d16e47 | 1492 | unsigned int set, unsigned int clear) |
1da177e4 | 1493 | { |
8070e35c | 1494 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1495 | |
1da177e4 LT |
1496 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
1497 | return -ENODEV; | |
d8d16e47 | 1498 | |
1da177e4 LT |
1499 | if (set & TIOCM_RTS) |
1500 | raise_rts(port); | |
1501 | if (set & TIOCM_DTR) | |
1502 | raise_dtr(port); | |
1503 | ||
1504 | if (clear & TIOCM_RTS) | |
1505 | drop_rts(port); | |
1506 | if (clear & TIOCM_DTR) | |
1507 | drop_dtr(port); | |
1508 | ||
1509 | return 0; | |
d8d16e47 | 1510 | } |
1da177e4 | 1511 | |
d8d16e47 JS |
1512 | static int isicom_set_serial_info(struct isi_port *port, |
1513 | struct serial_struct __user *info) | |
1da177e4 LT |
1514 | { |
1515 | struct serial_struct newinfo; | |
1516 | int reconfig_port; | |
1517 | ||
d8d16e47 | 1518 | if (copy_from_user(&newinfo, info, sizeof(newinfo))) |
1da177e4 | 1519 | return -EFAULT; |
d8d16e47 JS |
1520 | |
1521 | reconfig_port = ((port->flags & ASYNC_SPD_MASK) != | |
1522 | (newinfo.flags & ASYNC_SPD_MASK)); | |
1523 | ||
1da177e4 LT |
1524 | if (!capable(CAP_SYS_ADMIN)) { |
1525 | if ((newinfo.close_delay != port->close_delay) || | |
d8d16e47 JS |
1526 | (newinfo.closing_wait != port->closing_wait) || |
1527 | ((newinfo.flags & ~ASYNC_USR_MASK) != | |
1528 | (port->flags & ~ASYNC_USR_MASK))) | |
1da177e4 LT |
1529 | return -EPERM; |
1530 | port->flags = ((port->flags & ~ ASYNC_USR_MASK) | | |
1531 | (newinfo.flags & ASYNC_USR_MASK)); | |
d8d16e47 | 1532 | } |
1da177e4 LT |
1533 | else { |
1534 | port->close_delay = newinfo.close_delay; | |
d8d16e47 JS |
1535 | port->closing_wait = newinfo.closing_wait; |
1536 | port->flags = ((port->flags & ~ASYNC_FLAGS) | | |
1da177e4 LT |
1537 | (newinfo.flags & ASYNC_FLAGS)); |
1538 | } | |
1539 | if (reconfig_port) { | |
1540 | isicom_config_port(port); | |
1541 | } | |
d8d16e47 JS |
1542 | return 0; |
1543 | } | |
1da177e4 | 1544 | |
d8d16e47 JS |
1545 | static int isicom_get_serial_info(struct isi_port *port, |
1546 | struct serial_struct __user *info) | |
1da177e4 LT |
1547 | { |
1548 | struct serial_struct out_info; | |
d8d16e47 | 1549 | |
1da177e4 LT |
1550 | memset(&out_info, 0, sizeof(out_info)); |
1551 | /* out_info.type = ? */ | |
1552 | out_info.line = port - isi_ports; | |
1553 | out_info.port = port->card->base; | |
1554 | out_info.irq = port->card->irq; | |
1555 | out_info.flags = port->flags; | |
1556 | /* out_info.baud_base = ? */ | |
1557 | out_info.close_delay = port->close_delay; | |
1558 | out_info.closing_wait = port->closing_wait; | |
d8d16e47 | 1559 | if (copy_to_user(info, &out_info, sizeof(out_info))) |
1da177e4 LT |
1560 | return -EFAULT; |
1561 | return 0; | |
d8d16e47 | 1562 | } |
1da177e4 | 1563 | |
d8d16e47 JS |
1564 | static int isicom_ioctl(struct tty_struct *tty, struct file *filp, |
1565 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 1566 | { |
8070e35c | 1567 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1568 | void __user *argp = (void __user *)arg; |
1569 | int retval; | |
1570 | ||
1571 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) | |
1572 | return -ENODEV; | |
1573 | ||
1574 | switch(cmd) { | |
d8d16e47 JS |
1575 | case TCSBRK: |
1576 | retval = tty_check_change(tty); | |
1577 | if (retval) | |
1578 | return retval; | |
1579 | tty_wait_until_sent(tty, 0); | |
1580 | if (!arg) | |
1581 | isicom_send_break(port, HZ/4); | |
1582 | return 0; | |
1583 | ||
1584 | case TCSBRKP: | |
1585 | retval = tty_check_change(tty); | |
1586 | if (retval) | |
1587 | return retval; | |
1588 | tty_wait_until_sent(tty, 0); | |
1589 | isicom_send_break(port, arg ? arg * (HZ/10) : HZ/4); | |
1590 | return 0; | |
1591 | ||
1592 | case TIOCGSOFTCAR: | |
1593 | return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp); | |
1594 | ||
1595 | case TIOCSSOFTCAR: | |
1596 | if (get_user(arg, (unsigned long __user *) argp)) | |
1597 | return -EFAULT; | |
1598 | tty->termios->c_cflag = | |
1599 | ((tty->termios->c_cflag & ~CLOCAL) | | |
1600 | (arg ? CLOCAL : 0)); | |
1601 | return 0; | |
1602 | ||
1603 | case TIOCGSERIAL: | |
1604 | return isicom_get_serial_info(port, argp); | |
1605 | ||
1606 | case TIOCSSERIAL: | |
1607 | return isicom_set_serial_info(port, argp); | |
1608 | ||
1609 | default: | |
1610 | return -ENOIOCTLCMD; | |
1da177e4 LT |
1611 | } |
1612 | return 0; | |
1613 | } | |
1614 | ||
1615 | /* set_termios et all */ | |
d8d16e47 JS |
1616 | static void isicom_set_termios(struct tty_struct *tty, |
1617 | struct termios *old_termios) | |
1da177e4 | 1618 | { |
8070e35c | 1619 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1620 | |
1da177e4 LT |
1621 | if (isicom_paranoia_check(port, tty->name, "isicom_set_termios")) |
1622 | return; | |
d8d16e47 | 1623 | |
1da177e4 | 1624 | if (tty->termios->c_cflag == old_termios->c_cflag && |
d8d16e47 | 1625 | tty->termios->c_iflag == old_termios->c_iflag) |
1da177e4 | 1626 | return; |
d8d16e47 | 1627 | |
1da177e4 | 1628 | isicom_config_port(port); |
d8d16e47 | 1629 | |
1da177e4 | 1630 | if ((old_termios->c_cflag & CRTSCTS) && |
d8d16e47 | 1631 | !(tty->termios->c_cflag & CRTSCTS)) { |
1da177e4 | 1632 | tty->hw_stopped = 0; |
d8d16e47 JS |
1633 | isicom_start(tty); |
1634 | } | |
1da177e4 LT |
1635 | } |
1636 | ||
1637 | /* throttle et all */ | |
d8d16e47 | 1638 | static void isicom_throttle(struct tty_struct *tty) |
1da177e4 | 1639 | { |
8070e35c | 1640 | struct isi_port *port = tty->driver_data; |
d8d16e47 JS |
1641 | struct isi_board *card = port->card; |
1642 | ||
1da177e4 LT |
1643 | if (isicom_paranoia_check(port, tty->name, "isicom_throttle")) |
1644 | return; | |
d8d16e47 | 1645 | |
1da177e4 LT |
1646 | /* tell the card that this port cannot handle any more data for now */ |
1647 | card->port_status &= ~(1 << port->channel); | |
1648 | outw(card->port_status, card->base + 0x02); | |
1649 | } | |
1650 | ||
1651 | /* unthrottle et all */ | |
d8d16e47 | 1652 | static void isicom_unthrottle(struct tty_struct *tty) |
1da177e4 | 1653 | { |
8070e35c | 1654 | struct isi_port *port = tty->driver_data; |
d8d16e47 JS |
1655 | struct isi_board *card = port->card; |
1656 | ||
1da177e4 LT |
1657 | if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle")) |
1658 | return; | |
d8d16e47 | 1659 | |
1da177e4 LT |
1660 | /* tell the card that this port is ready to accept more data */ |
1661 | card->port_status |= (1 << port->channel); | |
1662 | outw(card->port_status, card->base + 0x02); | |
1663 | } | |
1664 | ||
1665 | /* stop et all */ | |
d8d16e47 | 1666 | static void isicom_stop(struct tty_struct *tty) |
1da177e4 | 1667 | { |
8070e35c | 1668 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1669 | |
1670 | if (isicom_paranoia_check(port, tty->name, "isicom_stop")) | |
1671 | return; | |
d8d16e47 | 1672 | |
1da177e4 LT |
1673 | /* this tells the transmitter not to consider this port for |
1674 | data output to the card. */ | |
1675 | port->status &= ~ISI_TXOK; | |
1676 | } | |
1677 | ||
1678 | /* start et all */ | |
d8d16e47 | 1679 | static void isicom_start(struct tty_struct *tty) |
1da177e4 | 1680 | { |
8070e35c | 1681 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1682 | |
1da177e4 LT |
1683 | if (isicom_paranoia_check(port, tty->name, "isicom_start")) |
1684 | return; | |
d8d16e47 | 1685 | |
1da177e4 LT |
1686 | /* this tells the transmitter to consider this port for |
1687 | data output to the card. */ | |
1688 | port->status |= ISI_TXOK; | |
1689 | } | |
1690 | ||
1691 | /* hangup et all */ | |
d8d16e47 | 1692 | static void do_isicom_hangup(void *data) |
1da177e4 | 1693 | { |
8070e35c | 1694 | struct isi_port *port = data; |
d8d16e47 JS |
1695 | struct tty_struct *tty; |
1696 | ||
1da177e4 LT |
1697 | tty = port->tty; |
1698 | if (tty) | |
1699 | tty_hangup(tty); | |
1700 | } | |
1701 | ||
d8d16e47 | 1702 | static void isicom_hangup(struct tty_struct *tty) |
1da177e4 | 1703 | { |
8070e35c | 1704 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1705 | |
1da177e4 LT |
1706 | if (isicom_paranoia_check(port, tty->name, "isicom_hangup")) |
1707 | return; | |
d8d16e47 | 1708 | |
1da177e4 LT |
1709 | isicom_shutdown_port(port); |
1710 | port->count = 0; | |
1711 | port->flags &= ~ASYNC_NORMAL_ACTIVE; | |
1712 | port->tty = NULL; | |
1713 | wake_up_interruptible(&port->open_wait); | |
1714 | } | |
1715 | ||
1716 | /* flush_buffer et all */ | |
d8d16e47 | 1717 | static void isicom_flush_buffer(struct tty_struct *tty) |
1da177e4 | 1718 | { |
8070e35c | 1719 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1720 | struct isi_board *card = port->card; |
1da177e4 | 1721 | unsigned long flags; |
d8d16e47 | 1722 | |
1da177e4 LT |
1723 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer")) |
1724 | return; | |
d8d16e47 | 1725 | |
1da177e4 LT |
1726 | spin_lock_irqsave(&card->card_lock, flags); |
1727 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; | |
1728 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1729 | |
1da177e4 LT |
1730 | wake_up_interruptible(&tty->write_wait); |
1731 | tty_wakeup(tty); | |
1732 | } | |
1733 | ||
1734 | ||
4b849727 | 1735 | static int __devinit register_ioregion(void) |
1da177e4 LT |
1736 | { |
1737 | int count, done=0; | |
1738 | for (count=0; count < BOARD_COUNT; count++ ) { | |
1739 | if (isi_card[count].base) | |
1740 | if (!request_region(isi_card[count].base,16,ISICOM_NAME)) { | |
8070e35c | 1741 | printk(KERN_DEBUG "ISICOM: I/O Region 0x%lx-0x%lx is busy. Card%d will be disabled.\n", |
1da177e4 LT |
1742 | isi_card[count].base,isi_card[count].base+15,count+1); |
1743 | isi_card[count].base=0; | |
1744 | done++; | |
1745 | } | |
1746 | } | |
1747 | return done; | |
1748 | } | |
1749 | ||
4b849727 | 1750 | static void unregister_ioregion(void) |
1da177e4 LT |
1751 | { |
1752 | int count; | |
d8d16e47 | 1753 | for (count=0; count < BOARD_COUNT; count++ ) |
1da177e4 LT |
1754 | if (isi_card[count].base) { |
1755 | release_region(isi_card[count].base,16); | |
d8d16e47 | 1756 | #ifdef ISICOM_DEBUG |
8070e35c | 1757 | 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 | 1758 | #endif |
1da177e4 LT |
1759 | } |
1760 | } | |
1761 | ||
1762 | static struct tty_operations isicom_ops = { | |
d8d16e47 JS |
1763 | .open = isicom_open, |
1764 | .close = isicom_close, | |
1765 | .write = isicom_write, | |
1766 | .put_char = isicom_put_char, | |
1767 | .flush_chars = isicom_flush_chars, | |
1768 | .write_room = isicom_write_room, | |
1da177e4 | 1769 | .chars_in_buffer = isicom_chars_in_buffer, |
d8d16e47 JS |
1770 | .ioctl = isicom_ioctl, |
1771 | .set_termios = isicom_set_termios, | |
1772 | .throttle = isicom_throttle, | |
1773 | .unthrottle = isicom_unthrottle, | |
1774 | .stop = isicom_stop, | |
1775 | .start = isicom_start, | |
1776 | .hangup = isicom_hangup, | |
1777 | .flush_buffer = isicom_flush_buffer, | |
1778 | .tiocmget = isicom_tiocmget, | |
1779 | .tiocmset = isicom_tiocmset, | |
1da177e4 LT |
1780 | }; |
1781 | ||
aaa246ea | 1782 | static int __devinit isicom_register_tty_driver(void) |
1da177e4 | 1783 | { |
aaa246ea | 1784 | int error = -ENOMEM; |
1da177e4 LT |
1785 | |
1786 | /* tty driver structure initialization */ | |
1787 | isicom_normal = alloc_tty_driver(PORT_COUNT); | |
1788 | if (!isicom_normal) | |
aaa246ea JS |
1789 | goto end; |
1790 | ||
1791 | isicom_normal->owner = THIS_MODULE; | |
1792 | isicom_normal->name = "ttyM"; | |
1793 | isicom_normal->devfs_name = "isicom/"; | |
1794 | isicom_normal->major = ISICOM_NMAJOR; | |
1795 | isicom_normal->minor_start = 0; | |
1796 | isicom_normal->type = TTY_DRIVER_TYPE_SERIAL; | |
1797 | isicom_normal->subtype = SERIAL_TYPE_NORMAL; | |
1798 | isicom_normal->init_termios = tty_std_termios; | |
1799 | isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | | |
1800 | CLOCAL; | |
1801 | isicom_normal->flags = TTY_DRIVER_REAL_RAW; | |
1da177e4 | 1802 | tty_set_operations(isicom_normal, &isicom_ops); |
d8d16e47 | 1803 | |
aaa246ea JS |
1804 | if ((error = tty_register_driver(isicom_normal))) { |
1805 | pr_dbg("Couldn't register the dialin driver, error=%d\n", | |
1da177e4 LT |
1806 | error); |
1807 | put_tty_driver(isicom_normal); | |
1da177e4 | 1808 | } |
aaa246ea JS |
1809 | end: |
1810 | return error; | |
1da177e4 LT |
1811 | } |
1812 | ||
aaa246ea | 1813 | static void isicom_unregister_tty_driver(void) |
1da177e4 | 1814 | { |
aaa246ea JS |
1815 | int error; |
1816 | ||
1817 | if ((error = tty_unregister_driver(isicom_normal))) | |
1818 | pr_dbg("couldn't unregister normal driver, error=%d.\n", error); | |
1819 | ||
1da177e4 LT |
1820 | put_tty_driver(isicom_normal); |
1821 | } | |
1822 | ||
4b849727 | 1823 | static int __devinit register_isr(void) |
1da177e4 LT |
1824 | { |
1825 | int count, done=0; | |
1826 | unsigned long irqflags; | |
1827 | ||
1828 | for (count=0; count < BOARD_COUNT; count++ ) { | |
1829 | if (isi_card[count].base) { | |
d8d16e47 JS |
1830 | irqflags = (isi_card[count].isa == YES) ? |
1831 | SA_INTERRUPT : | |
1da177e4 LT |
1832 | (SA_INTERRUPT | SA_SHIRQ); |
1833 | ||
d8d16e47 JS |
1834 | if (request_irq(isi_card[count].irq, |
1835 | isicom_interrupt, | |
1836 | irqflags, | |
1da177e4 LT |
1837 | ISICOM_NAME, &isi_card[count])) { |
1838 | ||
1839 | printk(KERN_WARNING "ISICOM: Could not" | |
1840 | " install handler at Irq %d." | |
1841 | " Card%d will be disabled.\n", | |
1842 | isi_card[count].irq, count+1); | |
1843 | ||
1844 | release_region(isi_card[count].base,16); | |
1845 | isi_card[count].base=0; | |
1846 | } | |
1847 | else | |
1848 | done++; | |
d8d16e47 | 1849 | } |
1da177e4 LT |
1850 | } |
1851 | return done; | |
1852 | } | |
1853 | ||
1854 | static void __exit unregister_isr(void) | |
1855 | { | |
1856 | int count; | |
1857 | ||
1858 | for (count=0; count < BOARD_COUNT; count++ ) { | |
1859 | if (isi_card[count].base) | |
1860 | free_irq(isi_card[count].irq, &isi_card[count]); | |
1861 | } | |
1862 | } | |
1863 | ||
4b849727 | 1864 | static int __devinit isicom_init(void) |
1da177e4 LT |
1865 | { |
1866 | int card, channel, base; | |
d8d16e47 | 1867 | struct isi_port *port; |
1da177e4 | 1868 | unsigned long page; |
d8d16e47 JS |
1869 | |
1870 | if (!tmp_buf) { | |
1da177e4 | 1871 | page = get_zeroed_page(GFP_KERNEL); |
d8d16e47 JS |
1872 | if (!page) { |
1873 | #ifdef ISICOM_DEBUG | |
1874 | printk(KERN_DEBUG "ISICOM: Couldn't allocate page for tmp_buf.\n"); | |
1da177e4 LT |
1875 | #else |
1876 | printk(KERN_ERR "ISICOM: Not enough memory...\n"); | |
d8d16e47 JS |
1877 | #endif |
1878 | return 0; | |
1879 | } | |
1880 | tmp_buf = (unsigned char *) page; | |
1da177e4 | 1881 | } |
d8d16e47 JS |
1882 | |
1883 | if (!register_ioregion()) | |
1da177e4 LT |
1884 | { |
1885 | printk(KERN_ERR "ISICOM: All required I/O space found busy.\n"); | |
1886 | free_page((unsigned long)tmp_buf); | |
1887 | return 0; | |
1888 | } | |
aaa246ea | 1889 | if (isicom_register_tty_driver()) |
1da177e4 LT |
1890 | { |
1891 | unregister_ioregion(); | |
1892 | free_page((unsigned long)tmp_buf); | |
1893 | return 0; | |
1894 | } | |
d8d16e47 | 1895 | if (!register_isr()) |
1da177e4 | 1896 | { |
aaa246ea | 1897 | isicom_unregister_tty_driver(); |
1da177e4 LT |
1898 | /* ioports already uregistered in register_isr */ |
1899 | free_page((unsigned long)tmp_buf); | |
d8d16e47 | 1900 | return 0; |
1da177e4 | 1901 | } |
d8d16e47 | 1902 | |
1da177e4 LT |
1903 | memset(isi_ports, 0, sizeof(isi_ports)); |
1904 | for (card = 0; card < BOARD_COUNT; card++) { | |
1905 | port = &isi_ports[card * 16]; | |
1906 | isi_card[card].ports = port; | |
1907 | spin_lock_init(&isi_card[card].card_lock); | |
1908 | base = isi_card[card].base; | |
1909 | for (channel = 0; channel < 16; channel++, port++) { | |
1910 | port->magic = ISICOM_MAGIC; | |
1911 | port->card = &isi_card[card]; | |
1912 | port->channel = channel; | |
d8d16e47 JS |
1913 | port->close_delay = 50 * HZ/100; |
1914 | port->closing_wait = 3000 * HZ/100; | |
1915 | INIT_WORK(&port->hangup_tq, do_isicom_hangup, port); | |
1916 | INIT_WORK(&port->bh_tqueue, isicom_bottomhalf, port); | |
1917 | port->status = 0; | |
1918 | init_waitqueue_head(&port->open_wait); | |
1da177e4 LT |
1919 | init_waitqueue_head(&port->close_wait); |
1920 | /* . . . */ | |
d8d16e47 JS |
1921 | } |
1922 | } | |
1923 | ||
1924 | return 1; | |
1da177e4 LT |
1925 | } |
1926 | ||
1927 | /* | |
1928 | * Insmod can set static symbols so keep these static | |
1929 | */ | |
d8d16e47 | 1930 | |
1da177e4 LT |
1931 | static int io[4]; |
1932 | static int irq[4]; | |
1933 | ||
1da177e4 LT |
1934 | static int __devinit isicom_setup(void) |
1935 | { | |
1936 | struct pci_dev *dev = NULL; | |
1937 | int retval, card, idx, count; | |
1938 | unsigned char pciirq; | |
1939 | unsigned int ioaddr; | |
d8d16e47 | 1940 | |
1da177e4 | 1941 | card = 0; |
d8d16e47 | 1942 | for (idx=0; idx < BOARD_COUNT; idx++) { |
1da177e4 LT |
1943 | if (io[idx]) { |
1944 | isi_card[idx].base=io[idx]; | |
1945 | isi_card[idx].irq=irq[idx]; | |
1946 | isi_card[idx].isa=YES; | |
1947 | card++; | |
1948 | } | |
1949 | else { | |
1950 | isi_card[idx].base = 0; | |
1951 | isi_card[idx].irq = 0; | |
1952 | } | |
1953 | } | |
d8d16e47 | 1954 | |
1da177e4 LT |
1955 | for (idx=0 ;idx < card; idx++) { |
1956 | if (!((isi_card[idx].irq==2)||(isi_card[idx].irq==3)|| | |
d8d16e47 JS |
1957 | (isi_card[idx].irq==4)||(isi_card[idx].irq==5)|| |
1958 | (isi_card[idx].irq==7)||(isi_card[idx].irq==10)|| | |
1959 | (isi_card[idx].irq==11)||(isi_card[idx].irq==12)|| | |
1960 | (isi_card[idx].irq==15))) { | |
1961 | ||
1da177e4 LT |
1962 | if (isi_card[idx].base) { |
1963 | printk(KERN_ERR "ISICOM: Irq %d unsupported. Disabling Card%d...\n", | |
1964 | isi_card[idx].irq, idx+1); | |
1965 | isi_card[idx].base=0; | |
1966 | card--; | |
d8d16e47 | 1967 | } |
1da177e4 | 1968 | } |
d8d16e47 JS |
1969 | } |
1970 | ||
1da177e4 LT |
1971 | if (card < BOARD_COUNT) { |
1972 | for (idx=0; idx < DEVID_COUNT; idx++) { | |
1973 | dev = NULL; | |
1974 | for (;;){ | |
1975 | if (!(dev = pci_find_device(VENDOR_ID, isicom_pci_tbl[idx].device, dev))) | |
1976 | break; | |
1977 | if (card >= BOARD_COUNT) | |
1978 | break; | |
d8d16e47 | 1979 | |
1da177e4 LT |
1980 | if (pci_enable_device(dev)) |
1981 | break; | |
1982 | ||
1983 | /* found a PCI ISI card! */ | |
d8d16e47 JS |
1984 | ioaddr = pci_resource_start (dev, 3); |
1985 | /* i.e at offset 0x1c in the | |
1986 | * PCI configuration register | |
1987 | * space. | |
1988 | */ | |
1da177e4 LT |
1989 | pciirq = dev->irq; |
1990 | printk(KERN_INFO "ISI PCI Card(Device ID 0x%x)\n", isicom_pci_tbl[idx].device); | |
1991 | /* | |
1992 | * allot the first empty slot in the array | |
d8d16e47 JS |
1993 | */ |
1994 | for (count=0; count < BOARD_COUNT; count++) { | |
1da177e4 LT |
1995 | if (isi_card[count].base == 0) { |
1996 | isi_card[count].base = ioaddr; | |
1997 | isi_card[count].irq = pciirq; | |
1998 | isi_card[count].isa = NO; | |
1999 | card++; | |
2000 | break; | |
2001 | } | |
2002 | } | |
d8d16e47 | 2003 | } |
1da177e4 LT |
2004 | if (card >= BOARD_COUNT) break; |
2005 | } | |
2006 | } | |
d8d16e47 | 2007 | |
1da177e4 | 2008 | if (!(isi_card[0].base || isi_card[1].base || isi_card[2].base || isi_card[3].base)) { |
d8d16e47 | 2009 | printk(KERN_ERR "ISICOM: No valid card configuration. Driver cannot be initialized...\n"); |
1da177e4 | 2010 | return -EIO; |
d8d16e47 | 2011 | } |
1da177e4 LT |
2012 | |
2013 | retval = misc_register(&isiloader_device); | |
2014 | if (retval < 0) { | |
2015 | printk(KERN_ERR "ISICOM: Unable to register firmware loader driver.\n"); | |
2016 | return retval; | |
2017 | } | |
d8d16e47 | 2018 | |
1da177e4 | 2019 | if (!isicom_init()) { |
d8d16e47 | 2020 | if (misc_deregister(&isiloader_device)) |
1da177e4 LT |
2021 | printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n"); |
2022 | return -EIO; | |
2023 | } | |
d8d16e47 | 2024 | |
1da177e4 LT |
2025 | init_timer(&tx); |
2026 | tx.expires = jiffies + 1; | |
2027 | tx.data = 0; | |
2028 | tx.function = isicom_tx; | |
2029 | re_schedule = 1; | |
2030 | add_timer(&tx); | |
d8d16e47 | 2031 | |
1da177e4 LT |
2032 | return 0; |
2033 | } | |
2034 | ||
2035 | static void __exit isicom_exit(void) | |
2036 | { | |
aaa246ea JS |
2037 | unsigned int index = 0; |
2038 | ||
1da177e4 | 2039 | re_schedule = 0; |
aaa246ea JS |
2040 | |
2041 | while (re_schedule != 2 && index++ < 100) | |
2042 | msleep(10); | |
2043 | ||
1da177e4 | 2044 | unregister_isr(); |
aaa246ea | 2045 | isicom_unregister_tty_driver(); |
d8d16e47 JS |
2046 | unregister_ioregion(); |
2047 | if (tmp_buf) | |
1da177e4 LT |
2048 | free_page((unsigned long)tmp_buf); |
2049 | if (misc_deregister(&isiloader_device)) | |
2050 | printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n"); | |
2051 | } | |
2052 | ||
2053 | module_init(isicom_setup); | |
2054 | module_exit(isicom_exit); | |
aaa246ea JS |
2055 | |
2056 | MODULE_AUTHOR("MultiTech"); | |
2057 | MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech"); | |
2058 | MODULE_LICENSE("GPL"); | |
2059 | module_param_array(io, int, NULL, 0); | |
2060 | MODULE_PARM_DESC(io, "I/O ports for the cards"); | |
2061 | module_param_array(irq, int, NULL, 0); | |
2062 | MODULE_PARM_DESC(irq, "Interrupts for the cards"); |