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 | |
8eb04cf3 AC |
10 | * 1/9/98 alan@lxorguk.ukuu.org.uk |
11 | * Merge to 2.0.x kernel tree | |
1da177e4 LT |
12 | * Obtain and use official major/minors |
13 | * Loader switched to a misc device | |
14 | * (fixed range check bug as a side effect) | |
15 | * Printk clean up | |
8eb04cf3 AC |
16 | * 9/12/98 alan@lxorguk.ukuu.org.uk |
17 | * Rough port to 2.1.x | |
1da177e4 LT |
18 | * |
19 | * 10/6/99 sameer Merged the ISA and PCI drivers to | |
20 | * a new unified driver. | |
21 | * | |
22 | * 3/9/99 sameer Added support for ISI4616 cards. | |
23 | * | |
24 | * 16/9/99 sameer We do not force RTS low anymore. | |
d8d16e47 | 25 | * This is to prevent the firmware |
1da177e4 LT |
26 | * from getting confused. |
27 | * | |
28 | * 26/10/99 sameer Cosmetic changes:The driver now | |
29 | * dumps the Port Count information | |
30 | * along with I/O address and IRQ. | |
31 | * | |
32 | * 13/12/99 sameer Fixed the problem with IRQ sharing. | |
33 | * | |
34 | * 10/5/00 sameer Fixed isicom_shutdown_board() | |
35 | * to not lower DTR on all the ports | |
d8d16e47 | 36 | * when the last port on the card is |
1da177e4 LT |
37 | * closed. |
38 | * | |
39 | * 10/5/00 sameer Signal mask setup command added | |
d8d16e47 | 40 | * to isicom_setup_port and |
1da177e4 LT |
41 | * isicom_shutdown_port. |
42 | * | |
43 | * 24/5/00 sameer The driver is now SMP aware. | |
d8d16e47 JS |
44 | * |
45 | * | |
1da177e4 | 46 | * 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem |
d8d16e47 JS |
47 | * |
48 | * | |
1da177e4 LT |
49 | * 03/01/01 anil .s Added support for resetting the |
50 | * internal modems on ISI cards. | |
51 | * | |
52 | * 08/02/01 anil .s Upgraded the driver for kernel | |
53 | * 2.4.x | |
54 | * | |
d8d16e47 | 55 | * 11/04/01 Kevin Fixed firmware load problem with |
1da177e4 | 56 | * ISIHP-4X card |
d8d16e47 | 57 | * |
1da177e4 LT |
58 | * 30/04/01 anil .s Fixed the remote login through |
59 | * ISI port problem. Now the link | |
60 | * does not go down before password | |
61 | * prompt. | |
62 | * | |
63 | * 03/05/01 anil .s Fixed the problem with IRQ sharing | |
64 | * among ISI-PCI cards. | |
65 | * | |
66 | * 03/05/01 anil .s Added support to display the version | |
d8d16e47 | 67 | * info during insmod as well as module |
1da177e4 | 68 | * listing by lsmod. |
d8d16e47 | 69 | * |
1da177e4 LT |
70 | * 10/05/01 anil .s Done the modifications to the source |
71 | * file and Install script so that the | |
72 | * same installation can be used for | |
73 | * 2.2.x and 2.4.x kernel. | |
74 | * | |
75 | * 06/06/01 anil .s Now we drop both dtr and rts during | |
76 | * shutdown_port as well as raise them | |
77 | * during isicom_config_port. | |
d8d16e47 | 78 | * |
1da177e4 LT |
79 | * 09/06/01 acme@conectiva.com.br use capable, not suser, do |
80 | * restore_flags on failure in | |
81 | * isicom_send_break, verify put_user | |
82 | * result | |
83 | * | |
d8d16e47 JS |
84 | * 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps |
85 | * Baud index extended to 21 | |
86 | * | |
87 | * 20/03/03 ranjeeth Made to work for Linux Advanced server. | |
88 | * Taken care of license warning. | |
89 | * | |
90 | * 10/12/03 Ravindra Made to work for Fedora Core 1 of | |
1da177e4 LT |
91 | * Red Hat Distribution |
92 | * | |
93 | * 06/01/05 Alan Cox Merged the ISI and base kernel strands | |
94 | * into a single 2.6 driver | |
95 | * | |
96 | * *********************************************************** | |
97 | * | |
d8d16e47 | 98 | * To use this driver you also need the support package. You |
1da177e4 LT |
99 | * can find this in RPM format on |
100 | * ftp://ftp.linux.org.uk/pub/linux/alan | |
d8d16e47 | 101 | * |
1da177e4 LT |
102 | * You can find the original tools for this direct from Multitech |
103 | * ftp://ftp.multitech.com/ISI-Cards/ | |
104 | * | |
105 | * Having installed the cards the module options (/etc/modprobe.conf) | |
106 | * | |
107 | * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4 | |
108 | * | |
109 | * Omit those entries for boards you don't have installed. | |
110 | * | |
111 | * TODO | |
1da177e4 LT |
112 | * Merge testing |
113 | * 64-bit verification | |
114 | */ | |
115 | ||
db91340b JP |
116 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
117 | ||
1da177e4 | 118 | #include <linux/module.h> |
e65c1db1 | 119 | #include <linux/firmware.h> |
1da177e4 LT |
120 | #include <linux/kernel.h> |
121 | #include <linux/tty.h> | |
33f0f88f | 122 | #include <linux/tty_flip.h> |
1da177e4 LT |
123 | #include <linux/termios.h> |
124 | #include <linux/fs.h> | |
125 | #include <linux/sched.h> | |
126 | #include <linux/serial.h> | |
405f5571 | 127 | #include <linux/smp_lock.h> |
1da177e4 | 128 | #include <linux/mm.h> |
1da177e4 LT |
129 | #include <linux/interrupt.h> |
130 | #include <linux/timer.h> | |
131 | #include <linux/delay.h> | |
132 | #include <linux/ioport.h> | |
5a0e3ad6 | 133 | #include <linux/slab.h> |
1da177e4 | 134 | |
251b8dd7 AC |
135 | #include <linux/uaccess.h> |
136 | #include <linux/io.h> | |
1da177e4 LT |
137 | #include <asm/system.h> |
138 | ||
139 | #include <linux/pci.h> | |
140 | ||
141 | #include <linux/isicom.h> | |
142 | ||
aaa246ea JS |
143 | #define InterruptTheCard(base) outw(0, (base) + 0xc) |
144 | #define ClearInterrupt(base) inw((base) + 0x0a) | |
145 | ||
146 | #ifdef DEBUG | |
aaa246ea JS |
147 | #define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c)) |
148 | #else | |
aaa246ea JS |
149 | #define isicom_paranoia_check(a, b, c) 0 |
150 | #endif | |
151 | ||
9ac0948b JS |
152 | static int isicom_probe(struct pci_dev *, const struct pci_device_id *); |
153 | static void __devexit isicom_remove(struct pci_dev *); | |
154 | ||
1da177e4 | 155 | static struct pci_device_id isicom_pci_tbl[] = { |
9ac0948b JS |
156 | { PCI_DEVICE(VENDOR_ID, 0x2028) }, |
157 | { PCI_DEVICE(VENDOR_ID, 0x2051) }, | |
158 | { PCI_DEVICE(VENDOR_ID, 0x2052) }, | |
159 | { PCI_DEVICE(VENDOR_ID, 0x2053) }, | |
160 | { PCI_DEVICE(VENDOR_ID, 0x2054) }, | |
161 | { PCI_DEVICE(VENDOR_ID, 0x2055) }, | |
162 | { PCI_DEVICE(VENDOR_ID, 0x2056) }, | |
163 | { PCI_DEVICE(VENDOR_ID, 0x2057) }, | |
164 | { PCI_DEVICE(VENDOR_ID, 0x2058) }, | |
1da177e4 LT |
165 | { 0 } |
166 | }; | |
167 | MODULE_DEVICE_TABLE(pci, isicom_pci_tbl); | |
168 | ||
9ac0948b JS |
169 | static struct pci_driver isicom_driver = { |
170 | .name = "isicom", | |
171 | .id_table = isicom_pci_tbl, | |
172 | .probe = isicom_probe, | |
173 | .remove = __devexit_p(isicom_remove) | |
174 | }; | |
175 | ||
1da177e4 LT |
176 | static int prev_card = 3; /* start servicing isi_card[0] */ |
177 | static struct tty_driver *isicom_normal; | |
178 | ||
1da177e4 | 179 | static void isicom_tx(unsigned long _data); |
d8d16e47 | 180 | static void isicom_start(struct tty_struct *tty); |
1da177e4 | 181 | |
34b55b86 JS |
182 | static DEFINE_TIMER(tx, isicom_tx, 0, 0); |
183 | ||
1da177e4 LT |
184 | /* baud index mappings from linux defns to isi */ |
185 | ||
186 | static signed char linuxb_to_isib[] = { | |
7edc136a | 187 | -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19, 20, 21 |
1da177e4 LT |
188 | }; |
189 | ||
190 | struct isi_board { | |
8070e35c | 191 | unsigned long base; |
4969b3a4 | 192 | int irq; |
1da177e4 LT |
193 | unsigned char port_count; |
194 | unsigned short status; | |
a547dfe9 | 195 | unsigned short port_status; /* each bit for each port */ |
1da177e4 | 196 | unsigned short shift_count; |
251b8dd7 | 197 | struct isi_port *ports; |
1da177e4 | 198 | signed char count; |
1da177e4 LT |
199 | spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */ |
200 | unsigned long flags; | |
938a7023 | 201 | unsigned int index; |
1da177e4 LT |
202 | }; |
203 | ||
204 | struct isi_port { | |
205 | unsigned short magic; | |
f1d03228 | 206 | struct tty_port port; |
8070e35c JS |
207 | u16 channel; |
208 | u16 status; | |
251b8dd7 | 209 | struct isi_board *card; |
251b8dd7 | 210 | unsigned char *xmit_buf; |
1da177e4 LT |
211 | int xmit_head; |
212 | int xmit_tail; | |
213 | int xmit_cnt; | |
214 | }; | |
215 | ||
216 | static struct isi_board isi_card[BOARD_COUNT]; | |
217 | static struct isi_port isi_ports[PORT_COUNT]; | |
218 | ||
219 | /* | |
220 | * Locking functions for card level locking. We need to own both | |
221 | * the kernel lock for the card and have the card in a position that | |
222 | * it wants to talk. | |
223 | */ | |
d8d16e47 | 224 | |
4969b3a4 | 225 | static inline int WaitTillCardIsFree(unsigned long base) |
cfe7c09a JS |
226 | { |
227 | unsigned int count = 0; | |
228 | unsigned int a = in_atomic(); /* do we run under spinlock? */ | |
229 | ||
230 | while (!(inw(base + 0xe) & 0x1) && count++ < 100) | |
231 | if (a) | |
232 | mdelay(1); | |
233 | else | |
234 | msleep(1); | |
235 | ||
236 | return !(inw(base + 0xe) & 0x1); | |
237 | } | |
238 | ||
1da177e4 LT |
239 | static int lock_card(struct isi_board *card) |
240 | { | |
8070e35c | 241 | unsigned long base = card->base; |
5b21f9dd | 242 | unsigned int retries, a; |
1da177e4 | 243 | |
5b21f9dd | 244 | for (retries = 0; retries < 10; retries++) { |
1da177e4 | 245 | spin_lock_irqsave(&card->card_lock, card->flags); |
5b21f9dd JS |
246 | for (a = 0; a < 10; a++) { |
247 | if (inw(base + 0xe) & 0x1) | |
248 | return 1; | |
249 | udelay(10); | |
1da177e4 | 250 | } |
5b21f9dd JS |
251 | spin_unlock_irqrestore(&card->card_lock, card->flags); |
252 | msleep(10); | |
1da177e4 | 253 | } |
db91340b | 254 | pr_warning("Failed to lock Card (0x%lx)\n", card->base); |
a547dfe9 | 255 | |
0418726b | 256 | return 0; /* Failed to acquire the card! */ |
1da177e4 LT |
257 | } |
258 | ||
1da177e4 LT |
259 | static void unlock_card(struct isi_board *card) |
260 | { | |
261 | spin_unlock_irqrestore(&card->card_lock, card->flags); | |
262 | } | |
263 | ||
264 | /* | |
265 | * ISI Card specific ops ... | |
266 | */ | |
d8d16e47 | 267 | |
cfe7c09a | 268 | /* card->lock HAS to be held */ |
d8d16e47 | 269 | static void raise_dtr(struct isi_port *port) |
1da177e4 | 270 | { |
d8d16e47 | 271 | struct isi_board *card = port->card; |
8070e35c JS |
272 | unsigned long base = card->base; |
273 | u16 channel = port->channel; | |
1da177e4 | 274 | |
cfe7c09a | 275 | if (WaitTillCardIsFree(base)) |
1da177e4 LT |
276 | return; |
277 | ||
d8d16e47 | 278 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 LT |
279 | outw(0x0504, base); |
280 | InterruptTheCard(base); | |
281 | port->status |= ISI_DTR; | |
1da177e4 LT |
282 | } |
283 | ||
cfe7c09a | 284 | /* card->lock HAS to be held */ |
d8d16e47 JS |
285 | static inline void drop_dtr(struct isi_port *port) |
286 | { | |
287 | struct isi_board *card = port->card; | |
8070e35c JS |
288 | unsigned long base = card->base; |
289 | u16 channel = port->channel; | |
1da177e4 | 290 | |
cfe7c09a | 291 | if (WaitTillCardIsFree(base)) |
1da177e4 LT |
292 | return; |
293 | ||
d8d16e47 | 294 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 295 | outw(0x0404, base); |
d8d16e47 | 296 | InterruptTheCard(base); |
1da177e4 | 297 | port->status &= ~ISI_DTR; |
1da177e4 LT |
298 | } |
299 | ||
cfe7c09a | 300 | /* card->lock HAS to be held */ |
d8d16e47 | 301 | static inline void raise_rts(struct isi_port *port) |
1da177e4 | 302 | { |
d8d16e47 | 303 | struct isi_board *card = port->card; |
8070e35c JS |
304 | unsigned long base = card->base; |
305 | u16 channel = port->channel; | |
1da177e4 | 306 | |
cfe7c09a | 307 | if (WaitTillCardIsFree(base)) |
1da177e4 LT |
308 | return; |
309 | ||
d8d16e47 | 310 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 311 | outw(0x0a04, base); |
d8d16e47 | 312 | InterruptTheCard(base); |
1da177e4 | 313 | port->status |= ISI_RTS; |
1da177e4 | 314 | } |
cfe7c09a JS |
315 | |
316 | /* card->lock HAS to be held */ | |
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 | 322 | |
cfe7c09a | 323 | if (WaitTillCardIsFree(base)) |
1da177e4 LT |
324 | return; |
325 | ||
d8d16e47 | 326 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 327 | outw(0x0804, base); |
d8d16e47 | 328 | InterruptTheCard(base); |
1da177e4 | 329 | port->status &= ~ISI_RTS; |
1da177e4 LT |
330 | } |
331 | ||
cfe7c09a | 332 | /* card->lock MUST NOT be held */ |
5d951fb4 | 333 | |
fcc8ac18 | 334 | static void isicom_dtr_rts(struct tty_port *port, int on) |
1da177e4 | 335 | { |
5d951fb4 AC |
336 | struct isi_port *ip = container_of(port, struct isi_port, port); |
337 | struct isi_board *card = ip->card; | |
8070e35c | 338 | unsigned long base = card->base; |
5d951fb4 | 339 | u16 channel = ip->channel; |
1da177e4 LT |
340 | |
341 | if (!lock_card(card)) | |
342 | return; | |
343 | ||
fcc8ac18 AC |
344 | if (on) { |
345 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); | |
346 | outw(0x0f04, base); | |
347 | InterruptTheCard(base); | |
348 | ip->status |= (ISI_DTR | ISI_RTS); | |
349 | } else { | |
350 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); | |
351 | outw(0x0C04, base); | |
352 | InterruptTheCard(base); | |
353 | ip->status &= ~(ISI_DTR | ISI_RTS); | |
354 | } | |
1da177e4 LT |
355 | unlock_card(card); |
356 | } | |
357 | ||
cfe7c09a | 358 | /* card->lock HAS to be held */ |
d8d16e47 | 359 | static void drop_dtr_rts(struct isi_port *port) |
1da177e4 | 360 | { |
d8d16e47 | 361 | struct isi_board *card = port->card; |
8070e35c JS |
362 | unsigned long base = card->base; |
363 | u16 channel = port->channel; | |
1da177e4 | 364 | |
cfe7c09a | 365 | if (WaitTillCardIsFree(base)) |
1da177e4 LT |
366 | return; |
367 | ||
d8d16e47 | 368 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 369 | outw(0x0c04, base); |
d8d16e47 | 370 | InterruptTheCard(base); |
1da177e4 | 371 | port->status &= ~(ISI_RTS | ISI_DTR); |
1da177e4 LT |
372 | } |
373 | ||
1da177e4 LT |
374 | /* |
375 | * ISICOM Driver specific routines ... | |
376 | * | |
377 | */ | |
d8d16e47 | 378 | |
aaa246ea JS |
379 | static inline int __isicom_paranoia_check(struct isi_port const *port, |
380 | char *name, const char *routine) | |
1da177e4 | 381 | { |
1da177e4 | 382 | if (!port) { |
db91340b JP |
383 | pr_warning("Warning: bad isicom magic for dev %s in %s.\n", |
384 | name, routine); | |
1da177e4 LT |
385 | return 1; |
386 | } | |
387 | if (port->magic != ISICOM_MAGIC) { | |
db91340b JP |
388 | pr_warning("Warning: NULL isicom port for dev %s in %s.\n", |
389 | name, routine); | |
1da177e4 | 390 | return 1; |
d8d16e47 | 391 | } |
aaa246ea | 392 | |
1da177e4 LT |
393 | return 0; |
394 | } | |
d8d16e47 | 395 | |
1da177e4 | 396 | /* |
d8d16e47 | 397 | * Transmitter. |
1da177e4 LT |
398 | * |
399 | * We shovel data into the card buffers on a regular basis. The card | |
400 | * will do the rest of the work for us. | |
401 | */ | |
402 | ||
403 | static void isicom_tx(unsigned long _data) | |
404 | { | |
4969b3a4 | 405 | unsigned long flags, base; |
5b21f9dd | 406 | unsigned int retries; |
4969b3a4 | 407 | short count = (BOARD_COUNT-1), card; |
1da177e4 | 408 | short txcount, wrd, residue, word_count, cnt; |
d8d16e47 JS |
409 | struct isi_port *port; |
410 | struct tty_struct *tty; | |
411 | ||
1da177e4 LT |
412 | /* find next active board */ |
413 | card = (prev_card + 1) & 0x0003; | |
251b8dd7 | 414 | while (count-- > 0) { |
d8d16e47 | 415 | if (isi_card[card].status & BOARD_ACTIVE) |
1da177e4 | 416 | break; |
d8d16e47 | 417 | card = (card + 1) & 0x0003; |
1da177e4 LT |
418 | } |
419 | if (!(isi_card[card].status & BOARD_ACTIVE)) | |
420 | goto sched_again; | |
d8d16e47 | 421 | |
1da177e4 | 422 | prev_card = card; |
d8d16e47 | 423 | |
1da177e4 LT |
424 | count = isi_card[card].port_count; |
425 | port = isi_card[card].ports; | |
426 | base = isi_card[card].base; | |
5b21f9dd JS |
427 | |
428 | spin_lock_irqsave(&isi_card[card].card_lock, flags); | |
429 | for (retries = 0; retries < 100; retries++) { | |
430 | if (inw(base + 0xe) & 0x1) | |
431 | break; | |
432 | udelay(2); | |
433 | } | |
434 | if (retries >= 100) | |
435 | goto unlock; | |
436 | ||
d450b5a0 AC |
437 | tty = tty_port_tty_get(&port->port); |
438 | if (tty == NULL) | |
439 | goto put_unlock; | |
440 | ||
251b8dd7 | 441 | for (; count > 0; count--, port++) { |
1da177e4 | 442 | /* port not active or tx disabled to force flow control */ |
f1d03228 | 443 | if (!(port->port.flags & ASYNC_INITIALIZED) || |
d8d16e47 | 444 | !(port->status & ISI_TXOK)) |
1da177e4 | 445 | continue; |
d8d16e47 | 446 | |
1da177e4 | 447 | txcount = min_t(short, TX_SIZE, port->xmit_cnt); |
5b21f9dd | 448 | if (txcount <= 0 || tty->stopped || tty->hw_stopped) |
1da177e4 | 449 | continue; |
5b21f9dd JS |
450 | |
451 | if (!(inw(base + 0x02) & (1 << port->channel))) | |
d8d16e47 | 452 | continue; |
5b21f9dd | 453 | |
db91340b JP |
454 | pr_debug("txing %d bytes, port%d.\n", |
455 | txcount, port->channel + 1); | |
aaa246ea JS |
456 | outw((port->channel << isi_card[card].shift_count) | txcount, |
457 | base); | |
1da177e4 | 458 | residue = NO; |
d8d16e47 | 459 | wrd = 0; |
1da177e4 | 460 | while (1) { |
a547dfe9 JS |
461 | cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE |
462 | - port->xmit_tail)); | |
1da177e4 LT |
463 | if (residue == YES) { |
464 | residue = NO; | |
465 | if (cnt > 0) { | |
f1d03228 | 466 | wrd |= (port->port.xmit_buf[port->xmit_tail] |
a547dfe9 JS |
467 | << 8); |
468 | port->xmit_tail = (port->xmit_tail + 1) | |
469 | & (SERIAL_XMIT_SIZE - 1); | |
1da177e4 LT |
470 | port->xmit_cnt--; |
471 | txcount--; | |
472 | cnt--; | |
d8d16e47 | 473 | outw(wrd, base); |
a547dfe9 | 474 | } else { |
1da177e4 LT |
475 | outw(wrd, base); |
476 | break; | |
477 | } | |
d8d16e47 | 478 | } |
251b8dd7 AC |
479 | if (cnt <= 0) |
480 | break; | |
1da177e4 | 481 | word_count = cnt >> 1; |
f1d03228 | 482 | outsw(base, port->port.xmit_buf+port->xmit_tail, word_count); |
a547dfe9 JS |
483 | port->xmit_tail = (port->xmit_tail |
484 | + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1); | |
1da177e4 LT |
485 | txcount -= (word_count << 1); |
486 | port->xmit_cnt -= (word_count << 1); | |
487 | if (cnt & 0x0001) { | |
488 | residue = YES; | |
f1d03228 | 489 | wrd = port->port.xmit_buf[port->xmit_tail]; |
a547dfe9 JS |
490 | port->xmit_tail = (port->xmit_tail + 1) |
491 | & (SERIAL_XMIT_SIZE - 1); | |
1da177e4 LT |
492 | port->xmit_cnt--; |
493 | txcount--; | |
494 | } | |
495 | } | |
496 | ||
497 | InterruptTheCard(base); | |
498 | if (port->xmit_cnt <= 0) | |
499 | port->status &= ~ISI_TXOK; | |
500 | if (port->xmit_cnt <= WAKEUP_CHARS) | |
0aa5de85 | 501 | tty_wakeup(tty); |
d8d16e47 | 502 | } |
1da177e4 | 503 | |
d450b5a0 AC |
504 | put_unlock: |
505 | tty_kref_put(tty); | |
5b21f9dd JS |
506 | unlock: |
507 | spin_unlock_irqrestore(&isi_card[card].card_lock, flags); | |
d8d16e47 JS |
508 | /* schedule another tx for hopefully in about 10ms */ |
509 | sched_again: | |
34b55b86 | 510 | mod_timer(&tx, jiffies + msecs_to_jiffies(10)); |
d8d16e47 JS |
511 | } |
512 | ||
1da177e4 | 513 | /* |
d8d16e47 | 514 | * Main interrupt handler routine |
1da177e4 | 515 | */ |
d8d16e47 | 516 | |
7d12e780 | 517 | static irqreturn_t isicom_interrupt(int irq, void *dev_id) |
1da177e4 | 518 | { |
8070e35c | 519 | struct isi_board *card = dev_id; |
d8d16e47 JS |
520 | struct isi_port *port; |
521 | struct tty_struct *tty; | |
8070e35c JS |
522 | unsigned long base; |
523 | u16 header, word_count, count, channel; | |
1da177e4 | 524 | short byte_count; |
33f0f88f | 525 | unsigned char *rp; |
d8d16e47 | 526 | |
1da177e4 LT |
527 | if (!card || !(card->status & FIRMWARE_LOADED)) |
528 | return IRQ_NONE; | |
d8d16e47 | 529 | |
1da177e4 | 530 | base = card->base; |
cb4a10cc JS |
531 | |
532 | /* did the card interrupt us? */ | |
533 | if (!(inw(base + 0x0e) & 0x02)) | |
534 | return IRQ_NONE; | |
535 | ||
1da177e4 | 536 | spin_lock(&card->card_lock); |
d8d16e47 | 537 | |
18234f88 JS |
538 | /* |
539 | * disable any interrupts from the PCI card and lower the | |
540 | * interrupt line | |
541 | */ | |
542 | outw(0x8000, base+0x04); | |
543 | ClearInterrupt(base); | |
d8d16e47 | 544 | |
1da177e4 LT |
545 | inw(base); /* get the dummy word out */ |
546 | header = inw(base); | |
547 | channel = (header & 0x7800) >> card->shift_count; | |
548 | byte_count = header & 0xff; | |
549 | ||
550 | if (channel + 1 > card->port_count) { | |
db91340b JP |
551 | pr_warning("%s(0x%lx): %d(channel) > port_count.\n", |
552 | __func__, base, channel+1); | |
18234f88 | 553 | outw(0x0000, base+0x04); /* enable interrupts */ |
1da177e4 | 554 | spin_unlock(&card->card_lock); |
d8d16e47 | 555 | return IRQ_HANDLED; |
1da177e4 LT |
556 | } |
557 | port = card->ports + channel; | |
f1d03228 | 558 | if (!(port->port.flags & ASYNC_INITIALIZED)) { |
18234f88 | 559 | outw(0x0000, base+0x04); /* enable interrupts */ |
174f1307 | 560 | spin_unlock(&card->card_lock); |
1da177e4 | 561 | return IRQ_HANDLED; |
d8d16e47 JS |
562 | } |
563 | ||
d450b5a0 | 564 | tty = tty_port_tty_get(&port->port); |
1da177e4 LT |
565 | if (tty == NULL) { |
566 | word_count = byte_count >> 1; | |
251b8dd7 | 567 | while (byte_count > 1) { |
1da177e4 LT |
568 | inw(base); |
569 | byte_count -= 2; | |
570 | } | |
571 | if (byte_count & 0x01) | |
572 | inw(base); | |
18234f88 | 573 | outw(0x0000, base+0x04); /* enable interrupts */ |
1da177e4 LT |
574 | spin_unlock(&card->card_lock); |
575 | return IRQ_HANDLED; | |
576 | } | |
d8d16e47 | 577 | |
1da177e4 LT |
578 | if (header & 0x8000) { /* Status Packet */ |
579 | header = inw(base); | |
251b8dd7 | 580 | switch (header & 0xff) { |
d8d16e47 | 581 | case 0: /* Change in EIA signals */ |
f1d03228 | 582 | if (port->port.flags & ASYNC_CHECK_CD) { |
d8d16e47 JS |
583 | if (port->status & ISI_DCD) { |
584 | if (!(header & ISI_DCD)) { | |
585 | /* Carrier has been lost */ | |
db91340b JP |
586 | pr_debug("%s: DCD->low.\n", |
587 | __func__); | |
d8d16e47 | 588 | port->status &= ~ISI_DCD; |
0aa5de85 | 589 | tty_hangup(tty); |
1da177e4 | 590 | } |
a547dfe9 JS |
591 | } else if (header & ISI_DCD) { |
592 | /* Carrier has been detected */ | |
db91340b JP |
593 | pr_debug("%s: DCD->high.\n", |
594 | __func__); | |
a547dfe9 | 595 | port->status |= ISI_DCD; |
f1d03228 | 596 | wake_up_interruptible(&port->port.open_wait); |
1da177e4 | 597 | } |
a547dfe9 | 598 | } else { |
d8d16e47 JS |
599 | if (header & ISI_DCD) |
600 | port->status |= ISI_DCD; | |
601 | else | |
602 | port->status &= ~ISI_DCD; | |
603 | } | |
604 | ||
f1d03228 | 605 | if (port->port.flags & ASYNC_CTS_FLOW) { |
d450b5a0 | 606 | if (tty->hw_stopped) { |
d8d16e47 | 607 | if (header & ISI_CTS) { |
f1d03228 | 608 | port->port.tty->hw_stopped = 0; |
d8d16e47 | 609 | /* start tx ing */ |
a547dfe9 JS |
610 | port->status |= (ISI_TXOK |
611 | | ISI_CTS); | |
0aa5de85 | 612 | tty_wakeup(tty); |
1da177e4 | 613 | } |
a547dfe9 | 614 | } else if (!(header & ISI_CTS)) { |
d450b5a0 | 615 | tty->hw_stopped = 1; |
a547dfe9 JS |
616 | /* stop tx ing */ |
617 | port->status &= ~(ISI_TXOK | ISI_CTS); | |
1da177e4 | 618 | } |
a547dfe9 | 619 | } else { |
d8d16e47 JS |
620 | if (header & ISI_CTS) |
621 | port->status |= ISI_CTS; | |
1da177e4 | 622 | else |
d8d16e47 JS |
623 | port->status &= ~ISI_CTS; |
624 | } | |
625 | ||
626 | if (header & ISI_DSR) | |
627 | port->status |= ISI_DSR; | |
628 | else | |
629 | port->status &= ~ISI_DSR; | |
630 | ||
631 | if (header & ISI_RI) | |
632 | port->status |= ISI_RI; | |
633 | else | |
634 | port->status &= ~ISI_RI; | |
635 | ||
636 | break; | |
637 | ||
a547dfe9 | 638 | case 1: /* Received Break !!! */ |
d8d16e47 | 639 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
f1d03228 | 640 | if (port->port.flags & ASYNC_SAK) |
d8d16e47 JS |
641 | do_SAK(tty); |
642 | tty_flip_buffer_push(tty); | |
643 | break; | |
644 | ||
645 | case 2: /* Statistics */ | |
db91340b | 646 | pr_debug("%s: stats!!!\n", __func__); |
d8d16e47 JS |
647 | break; |
648 | ||
649 | default: | |
db91340b JP |
650 | pr_debug("%s: Unknown code in status packet.\n", |
651 | __func__); | |
d8d16e47 JS |
652 | break; |
653 | } | |
a547dfe9 | 654 | } else { /* Data Packet */ |
33f0f88f AC |
655 | |
656 | count = tty_prepare_flip_string(tty, &rp, byte_count & ~1); | |
db91340b JP |
657 | pr_debug("%s: Can rx %d of %d bytes.\n", |
658 | __func__, count, byte_count); | |
1da177e4 | 659 | word_count = count >> 1; |
33f0f88f | 660 | insw(base, rp, word_count); |
1da177e4 LT |
661 | byte_count -= (word_count << 1); |
662 | if (count & 0x0001) { | |
a547dfe9 JS |
663 | tty_insert_flip_char(tty, inw(base) & 0xff, |
664 | TTY_NORMAL); | |
1da177e4 | 665 | byte_count -= 2; |
d8d16e47 | 666 | } |
1da177e4 | 667 | if (byte_count > 0) { |
db91340b JP |
668 | pr_debug("%s(0x%lx:%d): Flip buffer overflow! dropping bytes...\n", |
669 | __func__, base, channel + 1); | |
251b8dd7 AC |
670 | /* drain out unread xtra data */ |
671 | while (byte_count > 0) { | |
1da177e4 LT |
672 | inw(base); |
673 | byte_count -= 2; | |
674 | } | |
675 | } | |
33f0f88f | 676 | tty_flip_buffer_push(tty); |
1da177e4 | 677 | } |
18234f88 | 678 | outw(0x0000, base+0x04); /* enable interrupts */ |
174f1307 | 679 | spin_unlock(&card->card_lock); |
d450b5a0 | 680 | tty_kref_put(tty); |
a547dfe9 | 681 | |
1da177e4 | 682 | return IRQ_HANDLED; |
d8d16e47 | 683 | } |
1da177e4 | 684 | |
d450b5a0 | 685 | static void isicom_config_port(struct tty_struct *tty) |
1da177e4 | 686 | { |
d450b5a0 | 687 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 688 | struct isi_board *card = port->card; |
1da177e4 | 689 | unsigned long baud; |
8070e35c JS |
690 | unsigned long base = card->base; |
691 | u16 channel_setup, channel = port->channel, | |
692 | shift_count = card->shift_count; | |
1da177e4 | 693 | unsigned char flow_ctrl; |
d8d16e47 | 694 | |
251b8dd7 | 695 | /* FIXME: Switch to new tty baud API */ |
1da177e4 LT |
696 | baud = C_BAUD(tty); |
697 | if (baud & CBAUDEX) { | |
698 | baud &= ~CBAUDEX; | |
d8d16e47 | 699 | |
1da177e4 LT |
700 | /* if CBAUDEX bit is on and the baud is set to either 50 or 75 |
701 | * then the card is programmed for 57.6Kbps or 115Kbps | |
702 | * respectively. | |
d8d16e47 JS |
703 | */ |
704 | ||
7edc136a JS |
705 | /* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */ |
706 | if (baud < 1 || baud > 4) | |
d450b5a0 | 707 | tty->termios->c_cflag &= ~CBAUDEX; |
1da177e4 LT |
708 | else |
709 | baud += 15; | |
d8d16e47 | 710 | } |
1da177e4 | 711 | if (baud == 15) { |
d8d16e47 JS |
712 | |
713 | /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set | |
1da177e4 LT |
714 | * by the set_serial_info ioctl ... this is done by |
715 | * the 'setserial' utility. | |
d8d16e47 JS |
716 | */ |
717 | ||
f1d03228 | 718 | if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
d8d16e47 | 719 | baud++; /* 57.6 Kbps */ |
f1d03228 | 720 | if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
251b8dd7 | 721 | baud += 2; /* 115 Kbps */ |
f1d03228 | 722 | if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) |
7edc136a | 723 | baud += 3; /* 230 kbps*/ |
f1d03228 | 724 | if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) |
7edc136a | 725 | baud += 4; /* 460 kbps*/ |
1da177e4 LT |
726 | } |
727 | if (linuxb_to_isib[baud] == -1) { | |
728 | /* hang up */ | |
d8d16e47 JS |
729 | drop_dtr(port); |
730 | return; | |
251b8dd7 | 731 | } else |
1da177e4 | 732 | raise_dtr(port); |
d8d16e47 | 733 | |
cfe7c09a | 734 | if (WaitTillCardIsFree(base) == 0) { |
251b8dd7 | 735 | outw(0x8000 | (channel << shift_count) | 0x03, base); |
1da177e4 LT |
736 | outw(linuxb_to_isib[baud] << 8 | 0x03, base); |
737 | channel_setup = 0; | |
251b8dd7 | 738 | switch (C_CSIZE(tty)) { |
d8d16e47 JS |
739 | case CS5: |
740 | channel_setup |= ISICOM_CS5; | |
741 | break; | |
742 | case CS6: | |
743 | channel_setup |= ISICOM_CS6; | |
744 | break; | |
745 | case CS7: | |
746 | channel_setup |= ISICOM_CS7; | |
747 | break; | |
748 | case CS8: | |
749 | channel_setup |= ISICOM_CS8; | |
750 | break; | |
1da177e4 | 751 | } |
d8d16e47 | 752 | |
1da177e4 LT |
753 | if (C_CSTOPB(tty)) |
754 | channel_setup |= ISICOM_2SB; | |
755 | if (C_PARENB(tty)) { | |
756 | channel_setup |= ISICOM_EVPAR; | |
757 | if (C_PARODD(tty)) | |
d8d16e47 | 758 | channel_setup |= ISICOM_ODPAR; |
1da177e4 | 759 | } |
d8d16e47 | 760 | outw(channel_setup, base); |
1da177e4 | 761 | InterruptTheCard(base); |
d8d16e47 | 762 | } |
1da177e4 | 763 | if (C_CLOCAL(tty)) |
f1d03228 | 764 | port->port.flags &= ~ASYNC_CHECK_CD; |
1da177e4 | 765 | else |
f1d03228 | 766 | port->port.flags |= ASYNC_CHECK_CD; |
d8d16e47 | 767 | |
1da177e4 LT |
768 | /* flow control settings ...*/ |
769 | flow_ctrl = 0; | |
f1d03228 | 770 | port->port.flags &= ~ASYNC_CTS_FLOW; |
1da177e4 | 771 | if (C_CRTSCTS(tty)) { |
f1d03228 | 772 | port->port.flags |= ASYNC_CTS_FLOW; |
1da177e4 | 773 | flow_ctrl |= ISICOM_CTSRTS; |
d8d16e47 JS |
774 | } |
775 | if (I_IXON(tty)) | |
1da177e4 LT |
776 | flow_ctrl |= ISICOM_RESPOND_XONXOFF; |
777 | if (I_IXOFF(tty)) | |
d8d16e47 JS |
778 | flow_ctrl |= ISICOM_INITIATE_XONXOFF; |
779 | ||
cfe7c09a | 780 | if (WaitTillCardIsFree(base) == 0) { |
251b8dd7 | 781 | outw(0x8000 | (channel << shift_count) | 0x04, base); |
1da177e4 LT |
782 | outw(flow_ctrl << 8 | 0x05, base); |
783 | outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base); | |
784 | InterruptTheCard(base); | |
1da177e4 | 785 | } |
d8d16e47 | 786 | |
1da177e4 LT |
787 | /* rx enabled -> enable port for rx on the card */ |
788 | if (C_CREAD(tty)) { | |
789 | card->port_status |= (1 << channel); | |
790 | outw(card->port_status, base + 0x02); | |
791 | } | |
792 | } | |
1da177e4 | 793 | |
d8d16e47 JS |
794 | /* open et all */ |
795 | ||
796 | static inline void isicom_setup_board(struct isi_board *bp) | |
1da177e4 LT |
797 | { |
798 | int channel; | |
d8d16e47 | 799 | struct isi_port *port; |
d8d16e47 | 800 | |
baaa08ac | 801 | bp->count++; |
6ed847d8 AC |
802 | if (!(bp->status & BOARD_INIT)) { |
803 | port = bp->ports; | |
804 | for (channel = 0; channel < bp->port_count; channel++, port++) | |
805 | drop_dtr_rts(port); | |
806 | } | |
807 | bp->status |= BOARD_ACTIVE | BOARD_INIT; | |
1da177e4 | 808 | } |
d8d16e47 | 809 | |
6ed847d8 AC |
810 | /* Activate and thus setup board are protected from races against shutdown |
811 | by the tty_port mutex */ | |
812 | ||
baaa08ac | 813 | static int isicom_activate(struct tty_port *tport, struct tty_struct *tty) |
1da177e4 | 814 | { |
baaa08ac | 815 | struct isi_port *port = container_of(tport, struct isi_port, port); |
d8d16e47 | 816 | struct isi_board *card = port->card; |
1da177e4 | 817 | unsigned long flags; |
d8d16e47 | 818 | |
baaa08ac | 819 | if (tty_port_alloc_xmit_buf(tport) < 0) |
f1d03228 | 820 | return -ENOMEM; |
1da177e4 LT |
821 | |
822 | spin_lock_irqsave(&card->card_lock, flags); | |
baaa08ac | 823 | isicom_setup_board(card); |
d8d16e47 | 824 | |
1da177e4 | 825 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; |
d8d16e47 | 826 | |
1da177e4 | 827 | /* discard any residual data */ |
cfe7c09a JS |
828 | if (WaitTillCardIsFree(card->base) == 0) { |
829 | outw(0x8000 | (port->channel << card->shift_count) | 0x02, | |
830 | card->base); | |
831 | outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base); | |
832 | InterruptTheCard(card->base); | |
833 | } | |
d450b5a0 | 834 | isicom_config_port(tty); |
1da177e4 | 835 | spin_unlock_irqrestore(&card->card_lock, flags); |
d8d16e47 JS |
836 | |
837 | return 0; | |
838 | } | |
839 | ||
31f35939 AC |
840 | static int isicom_carrier_raised(struct tty_port *port) |
841 | { | |
842 | struct isi_port *ip = container_of(port, struct isi_port, port); | |
843 | return (ip->status & ISI_DCD)?1 : 0; | |
844 | } | |
845 | ||
11d85d7b | 846 | static struct tty_port *isicom_find_port(struct tty_struct *tty) |
1da177e4 | 847 | { |
d8d16e47 JS |
848 | struct isi_port *port; |
849 | struct isi_board *card; | |
17c4edf0 | 850 | unsigned int board; |
11d85d7b | 851 | int line = tty->index; |
1da177e4 | 852 | |
1da177e4 | 853 | if (line < 0 || line > PORT_COUNT-1) |
11d85d7b | 854 | return NULL; |
1da177e4 LT |
855 | board = BOARD(line); |
856 | card = &isi_card[board]; | |
d8d16e47 | 857 | |
1da177e4 | 858 | if (!(card->status & FIRMWARE_LOADED)) |
11d85d7b | 859 | return NULL; |
d8d16e47 | 860 | |
1da177e4 LT |
861 | /* open on a port greater than the port count for the card !!! */ |
862 | if (line > ((board * 16) + card->port_count - 1)) | |
11d85d7b | 863 | return NULL; |
1da177e4 | 864 | |
d8d16e47 | 865 | port = &isi_ports[line]; |
1da177e4 | 866 | if (isicom_paranoia_check(port, tty->name, "isicom_open")) |
11d85d7b AC |
867 | return NULL; |
868 | ||
869 | return &port->port; | |
870 | } | |
baaa08ac | 871 | |
11d85d7b AC |
872 | static int isicom_open(struct tty_struct *tty, struct file *filp) |
873 | { | |
874 | struct isi_port *port; | |
875 | struct isi_board *card; | |
876 | struct tty_port *tport; | |
d8d16e47 | 877 | |
11d85d7b AC |
878 | tport = isicom_find_port(tty); |
879 | if (tport == NULL) | |
880 | return -ENODEV; | |
881 | port = container_of(tport, struct isi_port, port); | |
882 | card = &isi_card[BOARD(tty->index)]; | |
d8d16e47 | 883 | |
baaa08ac | 884 | return tty_port_open(tport, tty, filp); |
1da177e4 | 885 | } |
d8d16e47 | 886 | |
1da177e4 LT |
887 | /* close et all */ |
888 | ||
cfe7c09a | 889 | /* card->lock HAS to be held */ |
d8d16e47 | 890 | static void isicom_shutdown_port(struct isi_port *port) |
1da177e4 | 891 | { |
d8d16e47 | 892 | struct isi_board *card = port->card; |
1da177e4 | 893 | |
1da177e4 | 894 | if (--card->count < 0) { |
db91340b JP |
895 | pr_debug("%s: bad board(0x%lx) count %d.\n", |
896 | __func__, card->base, card->count); | |
d8d16e47 | 897 | card->count = 0; |
1da177e4 | 898 | } |
baaa08ac | 899 | /* last port was closed, shutdown that board too */ |
6ed847d8 AC |
900 | if (!card->count) |
901 | card->status &= BOARD_ACTIVE; | |
1da177e4 LT |
902 | } |
903 | ||
978e595f AC |
904 | static void isicom_flush_buffer(struct tty_struct *tty) |
905 | { | |
906 | struct isi_port *port = tty->driver_data; | |
907 | struct isi_board *card = port->card; | |
908 | unsigned long flags; | |
909 | ||
910 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer")) | |
911 | return; | |
912 | ||
913 | spin_lock_irqsave(&card->card_lock, flags); | |
914 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; | |
915 | spin_unlock_irqrestore(&card->card_lock, flags); | |
916 | ||
917 | tty_wakeup(tty); | |
918 | } | |
919 | ||
baaa08ac | 920 | static void isicom_shutdown(struct tty_port *port) |
1da177e4 | 921 | { |
6f6412b4 AC |
922 | struct isi_port *ip = container_of(port, struct isi_port, port); |
923 | struct isi_board *card = ip->card; | |
1da177e4 | 924 | unsigned long flags; |
d8d16e47 | 925 | |
d8d16e47 | 926 | /* indicate to the card that no more data can be received |
1da177e4 LT |
927 | on this port */ |
928 | spin_lock_irqsave(&card->card_lock, flags); | |
baaa08ac AC |
929 | card->port_status &= ~(1 << ip->channel); |
930 | outw(card->port_status, card->base + 0x02); | |
a6614999 | 931 | isicom_shutdown_port(ip); |
1da177e4 | 932 | spin_unlock_irqrestore(&card->card_lock, flags); |
2493c0c1 | 933 | tty_port_free_xmit_buf(port); |
6f6412b4 | 934 | } |
d8d16e47 | 935 | |
6f6412b4 AC |
936 | static void isicom_close(struct tty_struct *tty, struct file *filp) |
937 | { | |
938 | struct isi_port *ip = tty->driver_data; | |
939 | struct tty_port *port = &ip->port; | |
940 | if (isicom_paranoia_check(ip, tty->name, "isicom_close")) | |
941 | return; | |
baaa08ac | 942 | tty_port_close(port, tty, filp); |
1da177e4 LT |
943 | } |
944 | ||
945 | /* write et all */ | |
d8d16e47 JS |
946 | static int isicom_write(struct tty_struct *tty, const unsigned char *buf, |
947 | int count) | |
1da177e4 | 948 | { |
8070e35c | 949 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 950 | struct isi_board *card = port->card; |
1da177e4 LT |
951 | unsigned long flags; |
952 | int cnt, total = 0; | |
953 | ||
954 | if (isicom_paranoia_check(port, tty->name, "isicom_write")) | |
955 | return 0; | |
d8d16e47 | 956 | |
1da177e4 | 957 | spin_lock_irqsave(&card->card_lock, flags); |
d8d16e47 | 958 | |
251b8dd7 | 959 | while (1) { |
a547dfe9 JS |
960 | cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt |
961 | - 1, SERIAL_XMIT_SIZE - port->xmit_head)); | |
d8d16e47 | 962 | if (cnt <= 0) |
1da177e4 | 963 | break; |
d8d16e47 | 964 | |
f1d03228 | 965 | memcpy(port->port.xmit_buf + port->xmit_head, buf, cnt); |
a547dfe9 JS |
966 | port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE |
967 | - 1); | |
1da177e4 LT |
968 | port->xmit_cnt += cnt; |
969 | buf += cnt; | |
970 | count -= cnt; | |
971 | total += cnt; | |
d8d16e47 | 972 | } |
1da177e4 LT |
973 | if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
974 | port->status |= ISI_TXOK; | |
975 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 976 | return total; |
1da177e4 LT |
977 | } |
978 | ||
979 | /* put_char et all */ | |
f34d7a5b | 980 | static int isicom_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 981 | { |
8070e35c | 982 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 983 | struct isi_board *card = port->card; |
1da177e4 | 984 | unsigned long flags; |
d8d16e47 | 985 | |
1da177e4 | 986 | if (isicom_paranoia_check(port, tty->name, "isicom_put_char")) |
f34d7a5b | 987 | return 0; |
d8d16e47 | 988 | |
1da177e4 | 989 | spin_lock_irqsave(&card->card_lock, flags); |
f34d7a5b AC |
990 | if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { |
991 | spin_unlock_irqrestore(&card->card_lock, flags); | |
992 | return 0; | |
993 | } | |
d8d16e47 | 994 | |
f1d03228 | 995 | port->port.xmit_buf[port->xmit_head++] = ch; |
1da177e4 LT |
996 | port->xmit_head &= (SERIAL_XMIT_SIZE - 1); |
997 | port->xmit_cnt++; | |
998 | spin_unlock_irqrestore(&card->card_lock, flags); | |
f34d7a5b | 999 | return 1; |
1da177e4 LT |
1000 | } |
1001 | ||
1002 | /* flush_chars et all */ | |
d8d16e47 | 1003 | static void isicom_flush_chars(struct tty_struct *tty) |
1da177e4 | 1004 | { |
8070e35c | 1005 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1006 | |
1da177e4 LT |
1007 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars")) |
1008 | return; | |
d8d16e47 | 1009 | |
a547dfe9 | 1010 | if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
f1d03228 | 1011 | !port->port.xmit_buf) |
1da177e4 | 1012 | return; |
d8d16e47 | 1013 | |
1da177e4 LT |
1014 | /* this tells the transmitter to consider this port for |
1015 | data output to the card ... that's the best we can do. */ | |
d8d16e47 | 1016 | port->status |= ISI_TXOK; |
1da177e4 LT |
1017 | } |
1018 | ||
1019 | /* write_room et all */ | |
d8d16e47 | 1020 | static int isicom_write_room(struct tty_struct *tty) |
1da177e4 | 1021 | { |
8070e35c | 1022 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1023 | int free; |
1024 | ||
1025 | if (isicom_paranoia_check(port, tty->name, "isicom_write_room")) | |
1026 | return 0; | |
d8d16e47 | 1027 | |
1da177e4 LT |
1028 | free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; |
1029 | if (free < 0) | |
1030 | free = 0; | |
1031 | return free; | |
1032 | } | |
1033 | ||
1034 | /* chars_in_buffer et all */ | |
d8d16e47 | 1035 | static int isicom_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1036 | { |
8070e35c | 1037 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1038 | if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer")) |
1039 | return 0; | |
1040 | return port->xmit_cnt; | |
1041 | } | |
1042 | ||
1043 | /* ioctl et all */ | |
6d889724 | 1044 | static int isicom_send_break(struct tty_struct *tty, int length) |
1da177e4 | 1045 | { |
6d889724 | 1046 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1047 | struct isi_board *card = port->card; |
8070e35c | 1048 | unsigned long base = card->base; |
d8d16e47 | 1049 | |
6d889724 AC |
1050 | if (length == -1) |
1051 | return -EOPNOTSUPP; | |
1052 | ||
d8d16e47 | 1053 | if (!lock_card(card)) |
6d889724 | 1054 | return -EINVAL; |
d8d16e47 | 1055 | |
1da177e4 LT |
1056 | outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base); |
1057 | outw((length & 0xff) << 8 | 0x00, base); | |
1058 | outw((length & 0xff00), base); | |
1059 | InterruptTheCard(base); | |
1060 | ||
1061 | unlock_card(card); | |
6d889724 | 1062 | return 0; |
1da177e4 LT |
1063 | } |
1064 | ||
1065 | static int isicom_tiocmget(struct tty_struct *tty, struct file *file) | |
1066 | { | |
8070e35c | 1067 | struct isi_port *port = tty->driver_data; |
1da177e4 | 1068 | /* just send the port status */ |
8070e35c | 1069 | u16 status = port->status; |
1da177e4 LT |
1070 | |
1071 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) | |
1072 | return -ENODEV; | |
d8d16e47 | 1073 | |
1da177e4 LT |
1074 | return ((status & ISI_RTS) ? TIOCM_RTS : 0) | |
1075 | ((status & ISI_DTR) ? TIOCM_DTR : 0) | | |
1076 | ((status & ISI_DCD) ? TIOCM_CAR : 0) | | |
1077 | ((status & ISI_DSR) ? TIOCM_DSR : 0) | | |
1078 | ((status & ISI_CTS) ? TIOCM_CTS : 0) | | |
1079 | ((status & ISI_RI ) ? TIOCM_RI : 0); | |
1080 | } | |
1081 | ||
1082 | static int isicom_tiocmset(struct tty_struct *tty, struct file *file, | |
d8d16e47 | 1083 | unsigned int set, unsigned int clear) |
1da177e4 | 1084 | { |
8070e35c | 1085 | struct isi_port *port = tty->driver_data; |
cfe7c09a | 1086 | unsigned long flags; |
d8d16e47 | 1087 | |
1da177e4 LT |
1088 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
1089 | return -ENODEV; | |
d8d16e47 | 1090 | |
cfe7c09a | 1091 | spin_lock_irqsave(&port->card->card_lock, flags); |
1da177e4 LT |
1092 | if (set & TIOCM_RTS) |
1093 | raise_rts(port); | |
1094 | if (set & TIOCM_DTR) | |
1095 | raise_dtr(port); | |
1096 | ||
1097 | if (clear & TIOCM_RTS) | |
1098 | drop_rts(port); | |
1099 | if (clear & TIOCM_DTR) | |
1100 | drop_dtr(port); | |
cfe7c09a | 1101 | spin_unlock_irqrestore(&port->card->card_lock, flags); |
1da177e4 LT |
1102 | |
1103 | return 0; | |
d8d16e47 | 1104 | } |
1da177e4 | 1105 | |
d450b5a0 AC |
1106 | static int isicom_set_serial_info(struct tty_struct *tty, |
1107 | struct serial_struct __user *info) | |
1da177e4 | 1108 | { |
d450b5a0 | 1109 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1110 | struct serial_struct newinfo; |
1111 | int reconfig_port; | |
1112 | ||
d8d16e47 | 1113 | if (copy_from_user(&newinfo, info, sizeof(newinfo))) |
1da177e4 | 1114 | return -EFAULT; |
d8d16e47 | 1115 | |
1eac4947 AC |
1116 | lock_kernel(); |
1117 | ||
f1d03228 | 1118 | reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) != |
d8d16e47 JS |
1119 | (newinfo.flags & ASYNC_SPD_MASK)); |
1120 | ||
1da177e4 | 1121 | if (!capable(CAP_SYS_ADMIN)) { |
44b7d1b3 AC |
1122 | if ((newinfo.close_delay != port->port.close_delay) || |
1123 | (newinfo.closing_wait != port->port.closing_wait) || | |
d8d16e47 | 1124 | ((newinfo.flags & ~ASYNC_USR_MASK) != |
f1d03228 | 1125 | (port->port.flags & ~ASYNC_USR_MASK))) { |
1eac4947 | 1126 | unlock_kernel(); |
1da177e4 | 1127 | return -EPERM; |
1eac4947 | 1128 | } |
f1d03228 | 1129 | port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) | |
1da177e4 | 1130 | (newinfo.flags & ASYNC_USR_MASK)); |
251b8dd7 | 1131 | } else { |
44b7d1b3 AC |
1132 | port->port.close_delay = newinfo.close_delay; |
1133 | port->port.closing_wait = newinfo.closing_wait; | |
f1d03228 | 1134 | port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) | |
1da177e4 LT |
1135 | (newinfo.flags & ASYNC_FLAGS)); |
1136 | } | |
1137 | if (reconfig_port) { | |
cfe7c09a JS |
1138 | unsigned long flags; |
1139 | spin_lock_irqsave(&port->card->card_lock, flags); | |
d450b5a0 | 1140 | isicom_config_port(tty); |
cfe7c09a | 1141 | spin_unlock_irqrestore(&port->card->card_lock, flags); |
1da177e4 | 1142 | } |
1eac4947 | 1143 | unlock_kernel(); |
d8d16e47 JS |
1144 | return 0; |
1145 | } | |
1da177e4 | 1146 | |
d8d16e47 JS |
1147 | static int isicom_get_serial_info(struct isi_port *port, |
1148 | struct serial_struct __user *info) | |
1da177e4 LT |
1149 | { |
1150 | struct serial_struct out_info; | |
d8d16e47 | 1151 | |
1eac4947 | 1152 | lock_kernel(); |
1da177e4 LT |
1153 | memset(&out_info, 0, sizeof(out_info)); |
1154 | /* out_info.type = ? */ | |
1155 | out_info.line = port - isi_ports; | |
1156 | out_info.port = port->card->base; | |
1157 | out_info.irq = port->card->irq; | |
f1d03228 | 1158 | out_info.flags = port->port.flags; |
1da177e4 | 1159 | /* out_info.baud_base = ? */ |
44b7d1b3 AC |
1160 | out_info.close_delay = port->port.close_delay; |
1161 | out_info.closing_wait = port->port.closing_wait; | |
1eac4947 | 1162 | unlock_kernel(); |
d8d16e47 | 1163 | if (copy_to_user(info, &out_info, sizeof(out_info))) |
1da177e4 LT |
1164 | return -EFAULT; |
1165 | return 0; | |
d8d16e47 | 1166 | } |
1da177e4 | 1167 | |
d8d16e47 JS |
1168 | static int isicom_ioctl(struct tty_struct *tty, struct file *filp, |
1169 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 1170 | { |
8070e35c | 1171 | struct isi_port *port = tty->driver_data; |
1da177e4 | 1172 | void __user *argp = (void __user *)arg; |
1da177e4 LT |
1173 | |
1174 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) | |
1175 | return -ENODEV; | |
1176 | ||
251b8dd7 | 1177 | switch (cmd) { |
d8d16e47 JS |
1178 | case TIOCGSERIAL: |
1179 | return isicom_get_serial_info(port, argp); | |
1180 | ||
1181 | case TIOCSSERIAL: | |
d450b5a0 | 1182 | return isicom_set_serial_info(tty, argp); |
d8d16e47 JS |
1183 | |
1184 | default: | |
1185 | return -ENOIOCTLCMD; | |
1da177e4 LT |
1186 | } |
1187 | return 0; | |
1188 | } | |
1189 | ||
1190 | /* set_termios et all */ | |
d8d16e47 | 1191 | static void isicom_set_termios(struct tty_struct *tty, |
606d099c | 1192 | struct ktermios *old_termios) |
1da177e4 | 1193 | { |
8070e35c | 1194 | struct isi_port *port = tty->driver_data; |
cfe7c09a | 1195 | unsigned long flags; |
d8d16e47 | 1196 | |
1da177e4 LT |
1197 | if (isicom_paranoia_check(port, tty->name, "isicom_set_termios")) |
1198 | return; | |
d8d16e47 | 1199 | |
1da177e4 | 1200 | if (tty->termios->c_cflag == old_termios->c_cflag && |
d8d16e47 | 1201 | tty->termios->c_iflag == old_termios->c_iflag) |
1da177e4 | 1202 | return; |
d8d16e47 | 1203 | |
cfe7c09a | 1204 | spin_lock_irqsave(&port->card->card_lock, flags); |
d450b5a0 | 1205 | isicom_config_port(tty); |
cfe7c09a | 1206 | spin_unlock_irqrestore(&port->card->card_lock, flags); |
d8d16e47 | 1207 | |
1da177e4 | 1208 | if ((old_termios->c_cflag & CRTSCTS) && |
d8d16e47 | 1209 | !(tty->termios->c_cflag & CRTSCTS)) { |
1da177e4 | 1210 | tty->hw_stopped = 0; |
d8d16e47 JS |
1211 | isicom_start(tty); |
1212 | } | |
1da177e4 LT |
1213 | } |
1214 | ||
1215 | /* throttle et all */ | |
d8d16e47 | 1216 | static void isicom_throttle(struct tty_struct *tty) |
1da177e4 | 1217 | { |
8070e35c | 1218 | struct isi_port *port = tty->driver_data; |
d8d16e47 JS |
1219 | struct isi_board *card = port->card; |
1220 | ||
1da177e4 LT |
1221 | if (isicom_paranoia_check(port, tty->name, "isicom_throttle")) |
1222 | return; | |
d8d16e47 | 1223 | |
1da177e4 LT |
1224 | /* tell the card that this port cannot handle any more data for now */ |
1225 | card->port_status &= ~(1 << port->channel); | |
1226 | outw(card->port_status, card->base + 0x02); | |
1227 | } | |
1228 | ||
1229 | /* unthrottle et all */ | |
d8d16e47 | 1230 | static void isicom_unthrottle(struct tty_struct *tty) |
1da177e4 | 1231 | { |
8070e35c | 1232 | struct isi_port *port = tty->driver_data; |
d8d16e47 JS |
1233 | struct isi_board *card = port->card; |
1234 | ||
1da177e4 LT |
1235 | if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle")) |
1236 | return; | |
d8d16e47 | 1237 | |
1da177e4 LT |
1238 | /* tell the card that this port is ready to accept more data */ |
1239 | card->port_status |= (1 << port->channel); | |
1240 | outw(card->port_status, card->base + 0x02); | |
1241 | } | |
1242 | ||
1243 | /* stop et all */ | |
d8d16e47 | 1244 | static void isicom_stop(struct tty_struct *tty) |
1da177e4 | 1245 | { |
8070e35c | 1246 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1247 | |
1248 | if (isicom_paranoia_check(port, tty->name, "isicom_stop")) | |
1249 | return; | |
d8d16e47 | 1250 | |
1da177e4 LT |
1251 | /* this tells the transmitter not to consider this port for |
1252 | data output to the card. */ | |
1253 | port->status &= ~ISI_TXOK; | |
1254 | } | |
1255 | ||
1256 | /* start et all */ | |
d8d16e47 | 1257 | static void isicom_start(struct tty_struct *tty) |
1da177e4 | 1258 | { |
8070e35c | 1259 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1260 | |
1da177e4 LT |
1261 | if (isicom_paranoia_check(port, tty->name, "isicom_start")) |
1262 | return; | |
d8d16e47 | 1263 | |
1da177e4 LT |
1264 | /* this tells the transmitter to consider this port for |
1265 | data output to the card. */ | |
1266 | port->status |= ISI_TXOK; | |
1267 | } | |
1268 | ||
d8d16e47 | 1269 | static void isicom_hangup(struct tty_struct *tty) |
1da177e4 | 1270 | { |
8070e35c | 1271 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1272 | |
1da177e4 LT |
1273 | if (isicom_paranoia_check(port, tty->name, "isicom_hangup")) |
1274 | return; | |
3e61696b | 1275 | tty_port_hangup(&port->port); |
1da177e4 LT |
1276 | } |
1277 | ||
1da177e4 | 1278 | |
9ac0948b JS |
1279 | /* |
1280 | * Driver init and deinit functions | |
1281 | */ | |
1da177e4 | 1282 | |
b68e31d0 | 1283 | static const struct tty_operations isicom_ops = { |
d8d16e47 JS |
1284 | .open = isicom_open, |
1285 | .close = isicom_close, | |
1286 | .write = isicom_write, | |
1287 | .put_char = isicom_put_char, | |
1288 | .flush_chars = isicom_flush_chars, | |
1289 | .write_room = isicom_write_room, | |
1da177e4 | 1290 | .chars_in_buffer = isicom_chars_in_buffer, |
d8d16e47 JS |
1291 | .ioctl = isicom_ioctl, |
1292 | .set_termios = isicom_set_termios, | |
1293 | .throttle = isicom_throttle, | |
1294 | .unthrottle = isicom_unthrottle, | |
1295 | .stop = isicom_stop, | |
1296 | .start = isicom_start, | |
1297 | .hangup = isicom_hangup, | |
1298 | .flush_buffer = isicom_flush_buffer, | |
1299 | .tiocmget = isicom_tiocmget, | |
1300 | .tiocmset = isicom_tiocmset, | |
6d889724 | 1301 | .break_ctl = isicom_send_break, |
1da177e4 LT |
1302 | }; |
1303 | ||
31f35939 AC |
1304 | static const struct tty_port_operations isicom_port_ops = { |
1305 | .carrier_raised = isicom_carrier_raised, | |
fcc8ac18 | 1306 | .dtr_rts = isicom_dtr_rts, |
baaa08ac AC |
1307 | .activate = isicom_activate, |
1308 | .shutdown = isicom_shutdown, | |
31f35939 AC |
1309 | }; |
1310 | ||
9ac0948b JS |
1311 | static int __devinit reset_card(struct pci_dev *pdev, |
1312 | const unsigned int card, unsigned int *signature) | |
1da177e4 | 1313 | { |
9ac0948b JS |
1314 | struct isi_board *board = pci_get_drvdata(pdev); |
1315 | unsigned long base = board->base; | |
f0a0ba6d | 1316 | unsigned int sig, portcount = 0; |
9ac0948b | 1317 | int retval = 0; |
d8d16e47 | 1318 | |
9ac0948b JS |
1319 | dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1, |
1320 | base); | |
d8d16e47 | 1321 | |
9ac0948b | 1322 | inw(base + 0x8); |
d8d16e47 | 1323 | |
f0a0ba6d | 1324 | msleep(10); |
9ac0948b JS |
1325 | |
1326 | outw(0, base + 0x8); /* Reset */ | |
1327 | ||
f0a0ba6d | 1328 | msleep(1000); |
9ac0948b | 1329 | |
f0a0ba6d JS |
1330 | sig = inw(base + 0x4) & 0xff; |
1331 | ||
1332 | if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd && | |
1333 | sig != 0xee) { | |
1334 | dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible " | |
1335 | "bad I/O Port Address 0x%lx).\n", card + 1, base); | |
1336 | dev_dbg(&pdev->dev, "Sig=0x%x\n", sig); | |
1337 | retval = -EIO; | |
1338 | goto end; | |
1339 | } | |
1340 | ||
1341 | msleep(10); | |
9ac0948b | 1342 | |
18234f88 | 1343 | portcount = inw(base + 0x2); |
07fb6f26 | 1344 | if (!(inw(base + 0xe) & 0x1) || (portcount != 0 && portcount != 4 && |
f0a0ba6d | 1345 | portcount != 8 && portcount != 16)) { |
898eb71c | 1346 | dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.\n", |
f0a0ba6d | 1347 | card + 1); |
18234f88 JS |
1348 | retval = -EIO; |
1349 | goto end; | |
9ac0948b JS |
1350 | } |
1351 | ||
f0a0ba6d | 1352 | switch (sig) { |
9ac0948b JS |
1353 | case 0xa5: |
1354 | case 0xbb: | |
1355 | case 0xdd: | |
18234f88 | 1356 | board->port_count = (portcount == 4) ? 4 : 8; |
9ac0948b JS |
1357 | board->shift_count = 12; |
1358 | break; | |
1359 | case 0xcc: | |
f0a0ba6d | 1360 | case 0xee: |
9ac0948b JS |
1361 | board->port_count = 16; |
1362 | board->shift_count = 11; | |
1363 | break; | |
d8d16e47 | 1364 | } |
9ac0948b | 1365 | dev_info(&pdev->dev, "-Done\n"); |
f0a0ba6d | 1366 | *signature = sig; |
d8d16e47 | 1367 | |
9ac0948b JS |
1368 | end: |
1369 | return retval; | |
1da177e4 LT |
1370 | } |
1371 | ||
e65c1db1 JS |
1372 | static int __devinit load_firmware(struct pci_dev *pdev, |
1373 | const unsigned int index, const unsigned int signature) | |
1374 | { | |
1375 | struct isi_board *board = pci_get_drvdata(pdev); | |
1376 | const struct firmware *fw; | |
1377 | unsigned long base = board->base; | |
1378 | unsigned int a; | |
1379 | u16 word_count, status; | |
1380 | int retval = -EIO; | |
1381 | char *name; | |
1382 | u8 *data; | |
1383 | ||
1384 | struct stframe { | |
1385 | u16 addr; | |
1386 | u16 count; | |
1387 | u8 data[0]; | |
1388 | } *frame; | |
1389 | ||
1390 | switch (signature) { | |
1391 | case 0xa5: | |
1392 | name = "isi608.bin"; | |
1393 | break; | |
1394 | case 0xbb: | |
1395 | name = "isi608em.bin"; | |
1396 | break; | |
1397 | case 0xcc: | |
1398 | name = "isi616em.bin"; | |
1399 | break; | |
1400 | case 0xdd: | |
1401 | name = "isi4608.bin"; | |
1402 | break; | |
1403 | case 0xee: | |
1404 | name = "isi4616.bin"; | |
1405 | break; | |
1406 | default: | |
1407 | dev_err(&pdev->dev, "Unknown signature.\n"); | |
1408 | goto end; | |
251b8dd7 | 1409 | } |
e65c1db1 JS |
1410 | |
1411 | retval = request_firmware(&fw, name, &pdev->dev); | |
1412 | if (retval) | |
1413 | goto end; | |
1414 | ||
e4e04088 JS |
1415 | retval = -EIO; |
1416 | ||
e65c1db1 JS |
1417 | for (frame = (struct stframe *)fw->data; |
1418 | frame < (struct stframe *)(fw->data + fw->size); | |
e4e04088 JS |
1419 | frame = (struct stframe *)((u8 *)(frame + 1) + |
1420 | frame->count)) { | |
e65c1db1 JS |
1421 | if (WaitTillCardIsFree(base)) |
1422 | goto errrelfw; | |
1423 | ||
1424 | outw(0xf0, base); /* start upload sequence */ | |
1425 | outw(0x00, base); | |
1426 | outw(frame->addr, base); /* lsb of address */ | |
1427 | ||
1428 | word_count = frame->count / 2 + frame->count % 2; | |
1429 | outw(word_count, base); | |
1430 | InterruptTheCard(base); | |
1431 | ||
1432 | udelay(100); /* 0x2f */ | |
1433 | ||
1434 | if (WaitTillCardIsFree(base)) | |
1435 | goto errrelfw; | |
1436 | ||
251b8dd7 AC |
1437 | status = inw(base + 0x4); |
1438 | if (status != 0) { | |
e65c1db1 | 1439 | dev_warn(&pdev->dev, "Card%d rejected load header:\n" |
ad361c98 JP |
1440 | "Address:0x%x\n" |
1441 | "Count:0x%x\n" | |
1442 | "Status:0x%x\n", | |
1443 | index + 1, frame->addr, frame->count, status); | |
e65c1db1 JS |
1444 | goto errrelfw; |
1445 | } | |
1446 | outsw(base, frame->data, word_count); | |
1447 | ||
1448 | InterruptTheCard(base); | |
1449 | ||
1450 | udelay(50); /* 0x0f */ | |
1451 | ||
1452 | if (WaitTillCardIsFree(base)) | |
1453 | goto errrelfw; | |
1454 | ||
251b8dd7 AC |
1455 | status = inw(base + 0x4); |
1456 | if (status != 0) { | |
e65c1db1 JS |
1457 | dev_err(&pdev->dev, "Card%d got out of sync.Card " |
1458 | "Status:0x%x\n", index + 1, status); | |
1459 | goto errrelfw; | |
1460 | } | |
251b8dd7 | 1461 | } |
e65c1db1 | 1462 | |
e65c1db1 JS |
1463 | /* XXX: should we test it by reading it back and comparing with original like |
1464 | * in load firmware package? */ | |
e4e04088 JS |
1465 | for (frame = (struct stframe *)fw->data; |
1466 | frame < (struct stframe *)(fw->data + fw->size); | |
1467 | frame = (struct stframe *)((u8 *)(frame + 1) + | |
1468 | frame->count)) { | |
e65c1db1 JS |
1469 | if (WaitTillCardIsFree(base)) |
1470 | goto errrelfw; | |
1471 | ||
1472 | outw(0xf1, base); /* start download sequence */ | |
1473 | outw(0x00, base); | |
1474 | outw(frame->addr, base); /* lsb of address */ | |
1475 | ||
1476 | word_count = (frame->count >> 1) + frame->count % 2; | |
1477 | outw(word_count + 1, base); | |
1478 | InterruptTheCard(base); | |
1479 | ||
1480 | udelay(50); /* 0xf */ | |
1481 | ||
1482 | if (WaitTillCardIsFree(base)) | |
1483 | goto errrelfw; | |
1484 | ||
251b8dd7 AC |
1485 | status = inw(base + 0x4); |
1486 | if (status != 0) { | |
e65c1db1 | 1487 | dev_warn(&pdev->dev, "Card%d rejected verify header:\n" |
ad361c98 JP |
1488 | "Address:0x%x\n" |
1489 | "Count:0x%x\n" | |
1490 | "Status: 0x%x\n", | |
1491 | index + 1, frame->addr, frame->count, status); | |
e65c1db1 JS |
1492 | goto errrelfw; |
1493 | } | |
1494 | ||
1495 | data = kmalloc(word_count * 2, GFP_KERNEL); | |
f0671378 JS |
1496 | if (data == NULL) { |
1497 | dev_err(&pdev->dev, "Card%d, firmware upload " | |
1498 | "failed, not enough memory\n", index + 1); | |
1499 | goto errrelfw; | |
1500 | } | |
e65c1db1 JS |
1501 | inw(base); |
1502 | insw(base, data, word_count); | |
1503 | InterruptTheCard(base); | |
1504 | ||
1505 | for (a = 0; a < frame->count; a++) | |
1506 | if (data[a] != frame->data[a]) { | |
1507 | kfree(data); | |
1508 | dev_err(&pdev->dev, "Card%d, firmware upload " | |
1509 | "failed\n", index + 1); | |
1510 | goto errrelfw; | |
1511 | } | |
1512 | kfree(data); | |
1513 | ||
1514 | udelay(50); /* 0xf */ | |
1515 | ||
1516 | if (WaitTillCardIsFree(base)) | |
1517 | goto errrelfw; | |
1518 | ||
251b8dd7 AC |
1519 | status = inw(base + 0x4); |
1520 | if (status != 0) { | |
e65c1db1 JS |
1521 | dev_err(&pdev->dev, "Card%d verify got out of sync. " |
1522 | "Card Status:0x%x\n", index + 1, status); | |
1523 | goto errrelfw; | |
1524 | } | |
1525 | } | |
1526 | ||
e4e04088 JS |
1527 | /* xfer ctrl */ |
1528 | if (WaitTillCardIsFree(base)) | |
1529 | goto errrelfw; | |
1530 | ||
1531 | outw(0xf2, base); | |
1532 | outw(0x800, base); | |
1533 | outw(0x0, base); | |
1534 | outw(0x0, base); | |
1535 | InterruptTheCard(base); | |
1536 | outw(0x0, base + 0x4); /* for ISI4608 cards */ | |
1537 | ||
e65c1db1 JS |
1538 | board->status |= FIRMWARE_LOADED; |
1539 | retval = 0; | |
1540 | ||
1541 | errrelfw: | |
1542 | release_firmware(fw); | |
1543 | end: | |
1544 | return retval; | |
1545 | } | |
1546 | ||
1da177e4 LT |
1547 | /* |
1548 | * Insmod can set static symbols so keep these static | |
1549 | */ | |
1ed0c0b7 | 1550 | static unsigned int card_count; |
9ac0948b JS |
1551 | |
1552 | static int __devinit isicom_probe(struct pci_dev *pdev, | |
1553 | const struct pci_device_id *ent) | |
1554 | { | |
9653a69e | 1555 | unsigned int uninitialized_var(signature), index; |
9ac0948b | 1556 | int retval = -EPERM; |
9ac0948b JS |
1557 | struct isi_board *board = NULL; |
1558 | ||
1ed0c0b7 | 1559 | if (card_count >= BOARD_COUNT) |
9ac0948b JS |
1560 | goto err; |
1561 | ||
e1e5770b JS |
1562 | retval = pci_enable_device(pdev); |
1563 | if (retval) { | |
1564 | dev_err(&pdev->dev, "failed to enable\n"); | |
1565 | goto err; | |
1566 | } | |
1567 | ||
9ac0948b JS |
1568 | dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device); |
1569 | ||
1570 | /* allot the first empty slot in the array */ | |
1571 | for (index = 0; index < BOARD_COUNT; index++) | |
1572 | if (isi_card[index].base == 0) { | |
1573 | board = &isi_card[index]; | |
1574 | break; | |
1575 | } | |
1576 | ||
938a7023 | 1577 | board->index = index; |
4969b3a4 JS |
1578 | board->base = pci_resource_start(pdev, 3); |
1579 | board->irq = pdev->irq; | |
1ed0c0b7 | 1580 | card_count++; |
9ac0948b JS |
1581 | |
1582 | pci_set_drvdata(pdev, board); | |
1583 | ||
78028da9 JS |
1584 | retval = pci_request_region(pdev, 3, ISICOM_NAME); |
1585 | if (retval) { | |
09a4a112 JS |
1586 | dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d " |
1587 | "will be disabled.\n", board->base, board->base + 15, | |
1588 | index + 1); | |
1589 | retval = -EBUSY; | |
1ed0c0b7 | 1590 | goto errdec; |
251b8dd7 | 1591 | } |
9ac0948b | 1592 | |
09a4a112 JS |
1593 | retval = request_irq(board->irq, isicom_interrupt, |
1594 | IRQF_SHARED | IRQF_DISABLED, ISICOM_NAME, board); | |
1595 | if (retval < 0) { | |
1596 | dev_err(&pdev->dev, "Could not install handler at Irq %d. " | |
1597 | "Card%d will be disabled.\n", board->irq, index + 1); | |
9ac0948b | 1598 | goto errunrr; |
09a4a112 | 1599 | } |
9ac0948b JS |
1600 | |
1601 | retval = reset_card(pdev, index, &signature); | |
1602 | if (retval < 0) | |
1603 | goto errunri; | |
1604 | ||
e65c1db1 JS |
1605 | retval = load_firmware(pdev, index, signature); |
1606 | if (retval < 0) | |
1607 | goto errunri; | |
1608 | ||
938a7023 JS |
1609 | for (index = 0; index < board->port_count; index++) |
1610 | tty_register_device(isicom_normal, board->index * 16 + index, | |
1611 | &pdev->dev); | |
1612 | ||
9ac0948b JS |
1613 | return 0; |
1614 | ||
1615 | errunri: | |
1616 | free_irq(board->irq, board); | |
1617 | errunrr: | |
78028da9 | 1618 | pci_release_region(pdev, 3); |
1ed0c0b7 | 1619 | errdec: |
9ac0948b | 1620 | board->base = 0; |
1ed0c0b7 | 1621 | card_count--; |
e1e5770b | 1622 | pci_disable_device(pdev); |
1ed0c0b7 | 1623 | err: |
9ac0948b JS |
1624 | return retval; |
1625 | } | |
1626 | ||
1627 | static void __devexit isicom_remove(struct pci_dev *pdev) | |
1628 | { | |
1629 | struct isi_board *board = pci_get_drvdata(pdev); | |
938a7023 JS |
1630 | unsigned int i; |
1631 | ||
1632 | for (i = 0; i < board->port_count; i++) | |
1633 | tty_unregister_device(isicom_normal, board->index * 16 + i); | |
9ac0948b JS |
1634 | |
1635 | free_irq(board->irq, board); | |
78028da9 | 1636 | pci_release_region(pdev, 3); |
1ed0c0b7 JS |
1637 | board->base = 0; |
1638 | card_count--; | |
e1e5770b | 1639 | pci_disable_device(pdev); |
9ac0948b | 1640 | } |
1da177e4 | 1641 | |
ca262005 | 1642 | static int __init isicom_init(void) |
1da177e4 | 1643 | { |
9ac0948b JS |
1644 | int retval, idx, channel; |
1645 | struct isi_port *port; | |
d8d16e47 | 1646 | |
251b8dd7 | 1647 | for (idx = 0; idx < BOARD_COUNT; idx++) { |
9ac0948b JS |
1648 | port = &isi_ports[idx * 16]; |
1649 | isi_card[idx].ports = port; | |
1650 | spin_lock_init(&isi_card[idx].card_lock); | |
1651 | for (channel = 0; channel < 16; channel++, port++) { | |
44b7d1b3 | 1652 | tty_port_init(&port->port); |
31f35939 | 1653 | port->port.ops = &isicom_port_ops; |
9ac0948b JS |
1654 | port->magic = ISICOM_MAGIC; |
1655 | port->card = &isi_card[idx]; | |
1656 | port->channel = channel; | |
44b7d1b3 AC |
1657 | port->port.close_delay = 50 * HZ/100; |
1658 | port->port.closing_wait = 3000 * HZ/100; | |
9ac0948b | 1659 | port->status = 0; |
9ac0948b | 1660 | /* . . . */ |
251b8dd7 | 1661 | } |
9ac0948b JS |
1662 | isi_card[idx].base = 0; |
1663 | isi_card[idx].irq = 0; | |
1da177e4 | 1664 | } |
d8d16e47 | 1665 | |
09a4a112 JS |
1666 | /* tty driver structure initialization */ |
1667 | isicom_normal = alloc_tty_driver(PORT_COUNT); | |
1668 | if (!isicom_normal) { | |
1669 | retval = -ENOMEM; | |
9ac0948b | 1670 | goto error; |
09a4a112 JS |
1671 | } |
1672 | ||
1673 | isicom_normal->owner = THIS_MODULE; | |
1674 | isicom_normal->name = "ttyM"; | |
1675 | isicom_normal->major = ISICOM_NMAJOR; | |
1676 | isicom_normal->minor_start = 0; | |
1677 | isicom_normal->type = TTY_DRIVER_TYPE_SERIAL; | |
1678 | isicom_normal->subtype = SERIAL_TYPE_NORMAL; | |
1679 | isicom_normal->init_termios = tty_std_termios; | |
1680 | isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | | |
1681 | CLOCAL; | |
938a7023 | 1682 | isicom_normal->flags = TTY_DRIVER_REAL_RAW | |
6d889724 | 1683 | TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK; |
09a4a112 JS |
1684 | tty_set_operations(isicom_normal, &isicom_ops); |
1685 | ||
1686 | retval = tty_register_driver(isicom_normal); | |
1687 | if (retval) { | |
db91340b | 1688 | pr_debug("Couldn't register the dialin driver\n"); |
09a4a112 JS |
1689 | goto err_puttty; |
1690 | } | |
1da177e4 | 1691 | |
9ac0948b | 1692 | retval = pci_register_driver(&isicom_driver); |
1da177e4 | 1693 | if (retval < 0) { |
db91340b | 1694 | pr_err("Unable to register pci driver.\n"); |
09a4a112 | 1695 | goto err_unrtty; |
1da177e4 | 1696 | } |
d8d16e47 | 1697 | |
34b55b86 | 1698 | mod_timer(&tx, jiffies + 1); |
d8d16e47 | 1699 | |
1da177e4 | 1700 | return 0; |
09a4a112 JS |
1701 | err_unrtty: |
1702 | tty_unregister_driver(isicom_normal); | |
1703 | err_puttty: | |
1704 | put_tty_driver(isicom_normal); | |
9ac0948b JS |
1705 | error: |
1706 | return retval; | |
1da177e4 LT |
1707 | } |
1708 | ||
1709 | static void __exit isicom_exit(void) | |
1710 | { | |
e327325f | 1711 | del_timer_sync(&tx); |
aaa246ea | 1712 | |
9ac0948b | 1713 | pci_unregister_driver(&isicom_driver); |
09a4a112 JS |
1714 | tty_unregister_driver(isicom_normal); |
1715 | put_tty_driver(isicom_normal); | |
1da177e4 LT |
1716 | } |
1717 | ||
ca262005 | 1718 | module_init(isicom_init); |
1da177e4 | 1719 | module_exit(isicom_exit); |
aaa246ea JS |
1720 | |
1721 | MODULE_AUTHOR("MultiTech"); | |
1722 | MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech"); | |
1723 | MODULE_LICENSE("GPL"); | |
e6c4ef98 BH |
1724 | MODULE_FIRMWARE("isi608.bin"); |
1725 | MODULE_FIRMWARE("isi608em.bin"); | |
1726 | MODULE_FIRMWARE("isi616em.bin"); | |
1727 | MODULE_FIRMWARE("isi4608.bin"); | |
1728 | MODULE_FIRMWARE("isi4616.bin"); |