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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 | |
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 | ||
116 | #include <linux/module.h> | |
e65c1db1 | 117 | #include <linux/firmware.h> |
1da177e4 LT |
118 | #include <linux/kernel.h> |
119 | #include <linux/tty.h> | |
33f0f88f | 120 | #include <linux/tty_flip.h> |
1da177e4 LT |
121 | #include <linux/termios.h> |
122 | #include <linux/fs.h> | |
123 | #include <linux/sched.h> | |
124 | #include <linux/serial.h> | |
405f5571 | 125 | #include <linux/smp_lock.h> |
1da177e4 | 126 | #include <linux/mm.h> |
1da177e4 LT |
127 | #include <linux/interrupt.h> |
128 | #include <linux/timer.h> | |
129 | #include <linux/delay.h> | |
130 | #include <linux/ioport.h> | |
131 | ||
251b8dd7 AC |
132 | #include <linux/uaccess.h> |
133 | #include <linux/io.h> | |
1da177e4 LT |
134 | #include <asm/system.h> |
135 | ||
136 | #include <linux/pci.h> | |
137 | ||
138 | #include <linux/isicom.h> | |
139 | ||
aaa246ea JS |
140 | #define InterruptTheCard(base) outw(0, (base) + 0xc) |
141 | #define ClearInterrupt(base) inw((base) + 0x0a) | |
142 | ||
73b52572 | 143 | #define pr_dbg(str...) pr_debug("ISICOM: " str) |
aaa246ea | 144 | #ifdef DEBUG |
aaa246ea JS |
145 | #define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c)) |
146 | #else | |
aaa246ea JS |
147 | #define isicom_paranoia_check(a, b, c) 0 |
148 | #endif | |
149 | ||
9ac0948b JS |
150 | static int isicom_probe(struct pci_dev *, const struct pci_device_id *); |
151 | static void __devexit isicom_remove(struct pci_dev *); | |
152 | ||
1da177e4 | 153 | static struct pci_device_id isicom_pci_tbl[] = { |
9ac0948b JS |
154 | { PCI_DEVICE(VENDOR_ID, 0x2028) }, |
155 | { PCI_DEVICE(VENDOR_ID, 0x2051) }, | |
156 | { PCI_DEVICE(VENDOR_ID, 0x2052) }, | |
157 | { PCI_DEVICE(VENDOR_ID, 0x2053) }, | |
158 | { PCI_DEVICE(VENDOR_ID, 0x2054) }, | |
159 | { PCI_DEVICE(VENDOR_ID, 0x2055) }, | |
160 | { PCI_DEVICE(VENDOR_ID, 0x2056) }, | |
161 | { PCI_DEVICE(VENDOR_ID, 0x2057) }, | |
162 | { PCI_DEVICE(VENDOR_ID, 0x2058) }, | |
1da177e4 LT |
163 | { 0 } |
164 | }; | |
165 | MODULE_DEVICE_TABLE(pci, isicom_pci_tbl); | |
166 | ||
9ac0948b JS |
167 | static struct pci_driver isicom_driver = { |
168 | .name = "isicom", | |
169 | .id_table = isicom_pci_tbl, | |
170 | .probe = isicom_probe, | |
171 | .remove = __devexit_p(isicom_remove) | |
172 | }; | |
173 | ||
1da177e4 LT |
174 | static int prev_card = 3; /* start servicing isi_card[0] */ |
175 | static struct tty_driver *isicom_normal; | |
176 | ||
1da177e4 | 177 | static void isicom_tx(unsigned long _data); |
d8d16e47 | 178 | static void isicom_start(struct tty_struct *tty); |
1da177e4 | 179 | |
34b55b86 JS |
180 | static DEFINE_TIMER(tx, isicom_tx, 0, 0); |
181 | ||
1da177e4 LT |
182 | /* baud index mappings from linux defns to isi */ |
183 | ||
184 | static signed char linuxb_to_isib[] = { | |
7edc136a | 185 | -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19, 20, 21 |
1da177e4 LT |
186 | }; |
187 | ||
188 | struct isi_board { | |
8070e35c | 189 | unsigned long base; |
4969b3a4 | 190 | int irq; |
1da177e4 LT |
191 | unsigned char port_count; |
192 | unsigned short status; | |
a547dfe9 | 193 | unsigned short port_status; /* each bit for each port */ |
1da177e4 | 194 | unsigned short shift_count; |
251b8dd7 | 195 | struct isi_port *ports; |
1da177e4 | 196 | signed char count; |
1da177e4 LT |
197 | spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */ |
198 | unsigned long flags; | |
938a7023 | 199 | unsigned int index; |
1da177e4 LT |
200 | }; |
201 | ||
202 | struct isi_port { | |
203 | unsigned short magic; | |
f1d03228 | 204 | struct tty_port port; |
8070e35c JS |
205 | u16 channel; |
206 | u16 status; | |
251b8dd7 | 207 | struct isi_board *card; |
251b8dd7 | 208 | unsigned char *xmit_buf; |
1da177e4 LT |
209 | int xmit_head; |
210 | int xmit_tail; | |
211 | int xmit_cnt; | |
212 | }; | |
213 | ||
214 | static struct isi_board isi_card[BOARD_COUNT]; | |
215 | static struct isi_port isi_ports[PORT_COUNT]; | |
216 | ||
217 | /* | |
218 | * Locking functions for card level locking. We need to own both | |
219 | * the kernel lock for the card and have the card in a position that | |
220 | * it wants to talk. | |
221 | */ | |
d8d16e47 | 222 | |
4969b3a4 | 223 | static inline int WaitTillCardIsFree(unsigned long base) |
cfe7c09a JS |
224 | { |
225 | unsigned int count = 0; | |
226 | unsigned int a = in_atomic(); /* do we run under spinlock? */ | |
227 | ||
228 | while (!(inw(base + 0xe) & 0x1) && count++ < 100) | |
229 | if (a) | |
230 | mdelay(1); | |
231 | else | |
232 | msleep(1); | |
233 | ||
234 | return !(inw(base + 0xe) & 0x1); | |
235 | } | |
236 | ||
1da177e4 LT |
237 | static int lock_card(struct isi_board *card) |
238 | { | |
8070e35c | 239 | unsigned long base = card->base; |
5b21f9dd | 240 | unsigned int retries, a; |
1da177e4 | 241 | |
5b21f9dd | 242 | for (retries = 0; retries < 10; retries++) { |
1da177e4 | 243 | spin_lock_irqsave(&card->card_lock, card->flags); |
5b21f9dd JS |
244 | for (a = 0; a < 10; a++) { |
245 | if (inw(base + 0xe) & 0x1) | |
246 | return 1; | |
247 | udelay(10); | |
1da177e4 | 248 | } |
5b21f9dd JS |
249 | spin_unlock_irqrestore(&card->card_lock, card->flags); |
250 | msleep(10); | |
1da177e4 | 251 | } |
a547dfe9 JS |
252 | printk(KERN_WARNING "ISICOM: Failed to lock Card (0x%lx)\n", |
253 | card->base); | |
254 | ||
0418726b | 255 | return 0; /* Failed to acquire the card! */ |
1da177e4 LT |
256 | } |
257 | ||
1da177e4 LT |
258 | static void unlock_card(struct isi_board *card) |
259 | { | |
260 | spin_unlock_irqrestore(&card->card_lock, card->flags); | |
261 | } | |
262 | ||
263 | /* | |
264 | * ISI Card specific ops ... | |
265 | */ | |
d8d16e47 | 266 | |
cfe7c09a | 267 | /* card->lock HAS to be held */ |
d8d16e47 | 268 | static void raise_dtr(struct isi_port *port) |
1da177e4 | 269 | { |
d8d16e47 | 270 | struct isi_board *card = port->card; |
8070e35c JS |
271 | unsigned long base = card->base; |
272 | u16 channel = port->channel; | |
1da177e4 | 273 | |
cfe7c09a | 274 | if (WaitTillCardIsFree(base)) |
1da177e4 LT |
275 | return; |
276 | ||
d8d16e47 | 277 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 LT |
278 | outw(0x0504, base); |
279 | InterruptTheCard(base); | |
280 | port->status |= ISI_DTR; | |
1da177e4 LT |
281 | } |
282 | ||
cfe7c09a | 283 | /* card->lock HAS to be held */ |
d8d16e47 JS |
284 | static inline void drop_dtr(struct isi_port *port) |
285 | { | |
286 | struct isi_board *card = port->card; | |
8070e35c JS |
287 | unsigned long base = card->base; |
288 | u16 channel = port->channel; | |
1da177e4 | 289 | |
cfe7c09a | 290 | if (WaitTillCardIsFree(base)) |
1da177e4 LT |
291 | return; |
292 | ||
d8d16e47 | 293 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 294 | outw(0x0404, base); |
d8d16e47 | 295 | InterruptTheCard(base); |
1da177e4 | 296 | port->status &= ~ISI_DTR; |
1da177e4 LT |
297 | } |
298 | ||
cfe7c09a | 299 | /* card->lock HAS to be held */ |
d8d16e47 | 300 | static inline void raise_rts(struct isi_port *port) |
1da177e4 | 301 | { |
d8d16e47 | 302 | struct isi_board *card = port->card; |
8070e35c JS |
303 | unsigned long base = card->base; |
304 | u16 channel = port->channel; | |
1da177e4 | 305 | |
cfe7c09a | 306 | if (WaitTillCardIsFree(base)) |
1da177e4 LT |
307 | return; |
308 | ||
d8d16e47 | 309 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 310 | outw(0x0a04, base); |
d8d16e47 | 311 | InterruptTheCard(base); |
1da177e4 | 312 | port->status |= ISI_RTS; |
1da177e4 | 313 | } |
cfe7c09a JS |
314 | |
315 | /* card->lock HAS to be held */ | |
d8d16e47 | 316 | static inline void drop_rts(struct isi_port *port) |
1da177e4 | 317 | { |
d8d16e47 | 318 | struct isi_board *card = port->card; |
8070e35c JS |
319 | unsigned long base = card->base; |
320 | u16 channel = port->channel; | |
1da177e4 | 321 | |
cfe7c09a | 322 | if (WaitTillCardIsFree(base)) |
1da177e4 LT |
323 | return; |
324 | ||
d8d16e47 | 325 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 326 | outw(0x0804, base); |
d8d16e47 | 327 | InterruptTheCard(base); |
1da177e4 | 328 | port->status &= ~ISI_RTS; |
1da177e4 LT |
329 | } |
330 | ||
cfe7c09a | 331 | /* card->lock MUST NOT be held */ |
5d951fb4 | 332 | |
fcc8ac18 | 333 | static void isicom_dtr_rts(struct tty_port *port, int on) |
1da177e4 | 334 | { |
5d951fb4 AC |
335 | struct isi_port *ip = container_of(port, struct isi_port, port); |
336 | struct isi_board *card = ip->card; | |
8070e35c | 337 | unsigned long base = card->base; |
5d951fb4 | 338 | u16 channel = ip->channel; |
1da177e4 LT |
339 | |
340 | if (!lock_card(card)) | |
341 | return; | |
342 | ||
fcc8ac18 AC |
343 | if (on) { |
344 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); | |
345 | outw(0x0f04, base); | |
346 | InterruptTheCard(base); | |
347 | ip->status |= (ISI_DTR | ISI_RTS); | |
348 | } else { | |
349 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); | |
350 | outw(0x0C04, base); | |
351 | InterruptTheCard(base); | |
352 | ip->status &= ~(ISI_DTR | ISI_RTS); | |
353 | } | |
1da177e4 LT |
354 | unlock_card(card); |
355 | } | |
356 | ||
cfe7c09a | 357 | /* card->lock HAS to be held */ |
d8d16e47 | 358 | static void drop_dtr_rts(struct isi_port *port) |
1da177e4 | 359 | { |
d8d16e47 | 360 | struct isi_board *card = port->card; |
8070e35c JS |
361 | unsigned long base = card->base; |
362 | u16 channel = port->channel; | |
1da177e4 | 363 | |
cfe7c09a | 364 | if (WaitTillCardIsFree(base)) |
1da177e4 LT |
365 | return; |
366 | ||
d8d16e47 | 367 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 368 | outw(0x0c04, base); |
d8d16e47 | 369 | InterruptTheCard(base); |
1da177e4 | 370 | port->status &= ~(ISI_RTS | ISI_DTR); |
1da177e4 LT |
371 | } |
372 | ||
1da177e4 LT |
373 | /* |
374 | * ISICOM Driver specific routines ... | |
375 | * | |
376 | */ | |
d8d16e47 | 377 | |
aaa246ea JS |
378 | static inline int __isicom_paranoia_check(struct isi_port const *port, |
379 | char *name, const char *routine) | |
1da177e4 | 380 | { |
1da177e4 | 381 | if (!port) { |
aaa246ea JS |
382 | printk(KERN_WARNING "ISICOM: Warning: bad isicom magic for " |
383 | "dev %s in %s.\n", name, routine); | |
1da177e4 LT |
384 | return 1; |
385 | } | |
386 | if (port->magic != ISICOM_MAGIC) { | |
aaa246ea JS |
387 | printk(KERN_WARNING "ISICOM: Warning: NULL isicom port for " |
388 | "dev %s in %s.\n", name, routine); | |
1da177e4 | 389 | return 1; |
d8d16e47 | 390 | } |
aaa246ea | 391 | |
1da177e4 LT |
392 | return 0; |
393 | } | |
d8d16e47 | 394 | |
1da177e4 | 395 | /* |
d8d16e47 | 396 | * Transmitter. |
1da177e4 LT |
397 | * |
398 | * We shovel data into the card buffers on a regular basis. The card | |
399 | * will do the rest of the work for us. | |
400 | */ | |
401 | ||
402 | static void isicom_tx(unsigned long _data) | |
403 | { | |
4969b3a4 | 404 | unsigned long flags, base; |
5b21f9dd | 405 | unsigned int retries; |
4969b3a4 | 406 | short count = (BOARD_COUNT-1), card; |
1da177e4 | 407 | short txcount, wrd, residue, word_count, cnt; |
d8d16e47 JS |
408 | struct isi_port *port; |
409 | struct tty_struct *tty; | |
410 | ||
1da177e4 LT |
411 | /* find next active board */ |
412 | card = (prev_card + 1) & 0x0003; | |
251b8dd7 | 413 | while (count-- > 0) { |
d8d16e47 | 414 | if (isi_card[card].status & BOARD_ACTIVE) |
1da177e4 | 415 | break; |
d8d16e47 | 416 | card = (card + 1) & 0x0003; |
1da177e4 LT |
417 | } |
418 | if (!(isi_card[card].status & BOARD_ACTIVE)) | |
419 | goto sched_again; | |
d8d16e47 | 420 | |
1da177e4 | 421 | prev_card = card; |
d8d16e47 | 422 | |
1da177e4 LT |
423 | count = isi_card[card].port_count; |
424 | port = isi_card[card].ports; | |
425 | base = isi_card[card].base; | |
5b21f9dd JS |
426 | |
427 | spin_lock_irqsave(&isi_card[card].card_lock, flags); | |
428 | for (retries = 0; retries < 100; retries++) { | |
429 | if (inw(base + 0xe) & 0x1) | |
430 | break; | |
431 | udelay(2); | |
432 | } | |
433 | if (retries >= 100) | |
434 | goto unlock; | |
435 | ||
d450b5a0 AC |
436 | tty = tty_port_tty_get(&port->port); |
437 | if (tty == NULL) | |
438 | goto put_unlock; | |
439 | ||
251b8dd7 | 440 | for (; count > 0; count--, port++) { |
1da177e4 | 441 | /* port not active or tx disabled to force flow control */ |
f1d03228 | 442 | if (!(port->port.flags & ASYNC_INITIALIZED) || |
d8d16e47 | 443 | !(port->status & ISI_TXOK)) |
1da177e4 | 444 | continue; |
d8d16e47 | 445 | |
1da177e4 | 446 | txcount = min_t(short, TX_SIZE, port->xmit_cnt); |
5b21f9dd | 447 | if (txcount <= 0 || tty->stopped || tty->hw_stopped) |
1da177e4 | 448 | continue; |
5b21f9dd JS |
449 | |
450 | if (!(inw(base + 0x02) & (1 << port->channel))) | |
d8d16e47 | 451 | continue; |
5b21f9dd | 452 | |
aaa246ea JS |
453 | pr_dbg("txing %d bytes, port%d.\n", txcount, |
454 | port->channel + 1); | |
455 | outw((port->channel << isi_card[card].shift_count) | txcount, | |
456 | base); | |
1da177e4 | 457 | residue = NO; |
d8d16e47 | 458 | wrd = 0; |
1da177e4 | 459 | while (1) { |
a547dfe9 JS |
460 | cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE |
461 | - port->xmit_tail)); | |
1da177e4 LT |
462 | if (residue == YES) { |
463 | residue = NO; | |
464 | if (cnt > 0) { | |
f1d03228 | 465 | wrd |= (port->port.xmit_buf[port->xmit_tail] |
a547dfe9 JS |
466 | << 8); |
467 | port->xmit_tail = (port->xmit_tail + 1) | |
468 | & (SERIAL_XMIT_SIZE - 1); | |
1da177e4 LT |
469 | port->xmit_cnt--; |
470 | txcount--; | |
471 | cnt--; | |
d8d16e47 | 472 | outw(wrd, base); |
a547dfe9 | 473 | } else { |
1da177e4 LT |
474 | outw(wrd, base); |
475 | break; | |
476 | } | |
d8d16e47 | 477 | } |
251b8dd7 AC |
478 | if (cnt <= 0) |
479 | break; | |
1da177e4 | 480 | word_count = cnt >> 1; |
f1d03228 | 481 | outsw(base, port->port.xmit_buf+port->xmit_tail, word_count); |
a547dfe9 JS |
482 | port->xmit_tail = (port->xmit_tail |
483 | + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1); | |
1da177e4 LT |
484 | txcount -= (word_count << 1); |
485 | port->xmit_cnt -= (word_count << 1); | |
486 | if (cnt & 0x0001) { | |
487 | residue = YES; | |
f1d03228 | 488 | wrd = port->port.xmit_buf[port->xmit_tail]; |
a547dfe9 JS |
489 | port->xmit_tail = (port->xmit_tail + 1) |
490 | & (SERIAL_XMIT_SIZE - 1); | |
1da177e4 LT |
491 | port->xmit_cnt--; |
492 | txcount--; | |
493 | } | |
494 | } | |
495 | ||
496 | InterruptTheCard(base); | |
497 | if (port->xmit_cnt <= 0) | |
498 | port->status &= ~ISI_TXOK; | |
499 | if (port->xmit_cnt <= WAKEUP_CHARS) | |
0aa5de85 | 500 | tty_wakeup(tty); |
d8d16e47 | 501 | } |
1da177e4 | 502 | |
d450b5a0 AC |
503 | put_unlock: |
504 | tty_kref_put(tty); | |
5b21f9dd JS |
505 | unlock: |
506 | spin_unlock_irqrestore(&isi_card[card].card_lock, flags); | |
d8d16e47 JS |
507 | /* schedule another tx for hopefully in about 10ms */ |
508 | sched_again: | |
34b55b86 | 509 | mod_timer(&tx, jiffies + msecs_to_jiffies(10)); |
d8d16e47 JS |
510 | } |
511 | ||
1da177e4 | 512 | /* |
d8d16e47 | 513 | * Main interrupt handler routine |
1da177e4 | 514 | */ |
d8d16e47 | 515 | |
7d12e780 | 516 | static irqreturn_t isicom_interrupt(int irq, void *dev_id) |
1da177e4 | 517 | { |
8070e35c | 518 | struct isi_board *card = dev_id; |
d8d16e47 JS |
519 | struct isi_port *port; |
520 | struct tty_struct *tty; | |
8070e35c JS |
521 | unsigned long base; |
522 | u16 header, word_count, count, channel; | |
1da177e4 | 523 | short byte_count; |
33f0f88f | 524 | unsigned char *rp; |
d8d16e47 | 525 | |
1da177e4 LT |
526 | if (!card || !(card->status & FIRMWARE_LOADED)) |
527 | return IRQ_NONE; | |
d8d16e47 | 528 | |
1da177e4 | 529 | base = card->base; |
cb4a10cc JS |
530 | |
531 | /* did the card interrupt us? */ | |
532 | if (!(inw(base + 0x0e) & 0x02)) | |
533 | return IRQ_NONE; | |
534 | ||
1da177e4 | 535 | spin_lock(&card->card_lock); |
d8d16e47 | 536 | |
18234f88 JS |
537 | /* |
538 | * disable any interrupts from the PCI card and lower the | |
539 | * interrupt line | |
540 | */ | |
541 | outw(0x8000, base+0x04); | |
542 | ClearInterrupt(base); | |
d8d16e47 | 543 | |
1da177e4 LT |
544 | inw(base); /* get the dummy word out */ |
545 | header = inw(base); | |
546 | channel = (header & 0x7800) >> card->shift_count; | |
547 | byte_count = header & 0xff; | |
548 | ||
549 | if (channel + 1 > card->port_count) { | |
a547dfe9 JS |
550 | printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%lx): " |
551 | "%d(channel) > port_count.\n", base, channel+1); | |
18234f88 | 552 | outw(0x0000, base+0x04); /* enable interrupts */ |
1da177e4 | 553 | spin_unlock(&card->card_lock); |
d8d16e47 | 554 | return IRQ_HANDLED; |
1da177e4 LT |
555 | } |
556 | port = card->ports + channel; | |
f1d03228 | 557 | if (!(port->port.flags & ASYNC_INITIALIZED)) { |
18234f88 | 558 | outw(0x0000, base+0x04); /* enable interrupts */ |
174f1307 | 559 | spin_unlock(&card->card_lock); |
1da177e4 | 560 | return IRQ_HANDLED; |
d8d16e47 JS |
561 | } |
562 | ||
d450b5a0 | 563 | tty = tty_port_tty_get(&port->port); |
1da177e4 LT |
564 | if (tty == NULL) { |
565 | word_count = byte_count >> 1; | |
251b8dd7 | 566 | while (byte_count > 1) { |
1da177e4 LT |
567 | inw(base); |
568 | byte_count -= 2; | |
569 | } | |
570 | if (byte_count & 0x01) | |
571 | inw(base); | |
18234f88 | 572 | outw(0x0000, base+0x04); /* enable interrupts */ |
1da177e4 LT |
573 | spin_unlock(&card->card_lock); |
574 | return IRQ_HANDLED; | |
575 | } | |
d8d16e47 | 576 | |
1da177e4 LT |
577 | if (header & 0x8000) { /* Status Packet */ |
578 | header = inw(base); | |
251b8dd7 | 579 | switch (header & 0xff) { |
d8d16e47 | 580 | case 0: /* Change in EIA signals */ |
f1d03228 | 581 | if (port->port.flags & ASYNC_CHECK_CD) { |
d8d16e47 JS |
582 | if (port->status & ISI_DCD) { |
583 | if (!(header & ISI_DCD)) { | |
584 | /* Carrier has been lost */ | |
a547dfe9 JS |
585 | pr_dbg("interrupt: DCD->low.\n" |
586 | ); | |
d8d16e47 | 587 | port->status &= ~ISI_DCD; |
0aa5de85 | 588 | tty_hangup(tty); |
1da177e4 | 589 | } |
a547dfe9 JS |
590 | } else if (header & ISI_DCD) { |
591 | /* Carrier has been detected */ | |
592 | pr_dbg("interrupt: DCD->high.\n"); | |
593 | port->status |= ISI_DCD; | |
f1d03228 | 594 | wake_up_interruptible(&port->port.open_wait); |
1da177e4 | 595 | } |
a547dfe9 | 596 | } else { |
d8d16e47 JS |
597 | if (header & ISI_DCD) |
598 | port->status |= ISI_DCD; | |
599 | else | |
600 | port->status &= ~ISI_DCD; | |
601 | } | |
602 | ||
f1d03228 | 603 | if (port->port.flags & ASYNC_CTS_FLOW) { |
d450b5a0 | 604 | if (tty->hw_stopped) { |
d8d16e47 | 605 | if (header & ISI_CTS) { |
f1d03228 | 606 | port->port.tty->hw_stopped = 0; |
d8d16e47 | 607 | /* start tx ing */ |
a547dfe9 JS |
608 | port->status |= (ISI_TXOK |
609 | | ISI_CTS); | |
0aa5de85 | 610 | tty_wakeup(tty); |
1da177e4 | 611 | } |
a547dfe9 | 612 | } else if (!(header & ISI_CTS)) { |
d450b5a0 | 613 | tty->hw_stopped = 1; |
a547dfe9 JS |
614 | /* stop tx ing */ |
615 | port->status &= ~(ISI_TXOK | ISI_CTS); | |
1da177e4 | 616 | } |
a547dfe9 | 617 | } else { |
d8d16e47 JS |
618 | if (header & ISI_CTS) |
619 | port->status |= ISI_CTS; | |
1da177e4 | 620 | else |
d8d16e47 JS |
621 | port->status &= ~ISI_CTS; |
622 | } | |
623 | ||
624 | if (header & ISI_DSR) | |
625 | port->status |= ISI_DSR; | |
626 | else | |
627 | port->status &= ~ISI_DSR; | |
628 | ||
629 | if (header & ISI_RI) | |
630 | port->status |= ISI_RI; | |
631 | else | |
632 | port->status &= ~ISI_RI; | |
633 | ||
634 | break; | |
635 | ||
a547dfe9 | 636 | case 1: /* Received Break !!! */ |
d8d16e47 | 637 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
f1d03228 | 638 | if (port->port.flags & ASYNC_SAK) |
d8d16e47 JS |
639 | do_SAK(tty); |
640 | tty_flip_buffer_push(tty); | |
641 | break; | |
642 | ||
643 | case 2: /* Statistics */ | |
aaa246ea | 644 | pr_dbg("isicom_interrupt: stats!!!.\n"); |
d8d16e47 JS |
645 | break; |
646 | ||
647 | default: | |
aaa246ea | 648 | pr_dbg("Intr: Unknown code in status packet.\n"); |
d8d16e47 JS |
649 | break; |
650 | } | |
a547dfe9 | 651 | } else { /* Data Packet */ |
33f0f88f AC |
652 | |
653 | count = tty_prepare_flip_string(tty, &rp, byte_count & ~1); | |
aaa246ea | 654 | pr_dbg("Intr: Can rx %d of %d bytes.\n", count, byte_count); |
1da177e4 | 655 | word_count = count >> 1; |
33f0f88f | 656 | insw(base, rp, word_count); |
1da177e4 LT |
657 | byte_count -= (word_count << 1); |
658 | if (count & 0x0001) { | |
a547dfe9 JS |
659 | tty_insert_flip_char(tty, inw(base) & 0xff, |
660 | TTY_NORMAL); | |
1da177e4 | 661 | byte_count -= 2; |
d8d16e47 | 662 | } |
1da177e4 | 663 | if (byte_count > 0) { |
aaa246ea JS |
664 | pr_dbg("Intr(0x%lx:%d): Flip buffer overflow! dropping " |
665 | "bytes...\n", base, channel + 1); | |
251b8dd7 AC |
666 | /* drain out unread xtra data */ |
667 | while (byte_count > 0) { | |
1da177e4 LT |
668 | inw(base); |
669 | byte_count -= 2; | |
670 | } | |
671 | } | |
33f0f88f | 672 | tty_flip_buffer_push(tty); |
1da177e4 | 673 | } |
18234f88 | 674 | outw(0x0000, base+0x04); /* enable interrupts */ |
174f1307 | 675 | spin_unlock(&card->card_lock); |
d450b5a0 | 676 | tty_kref_put(tty); |
a547dfe9 | 677 | |
1da177e4 | 678 | return IRQ_HANDLED; |
d8d16e47 | 679 | } |
1da177e4 | 680 | |
d450b5a0 | 681 | static void isicom_config_port(struct tty_struct *tty) |
1da177e4 | 682 | { |
d450b5a0 | 683 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 684 | struct isi_board *card = port->card; |
1da177e4 | 685 | unsigned long baud; |
8070e35c JS |
686 | unsigned long base = card->base; |
687 | u16 channel_setup, channel = port->channel, | |
688 | shift_count = card->shift_count; | |
1da177e4 | 689 | unsigned char flow_ctrl; |
d8d16e47 | 690 | |
251b8dd7 | 691 | /* FIXME: Switch to new tty baud API */ |
1da177e4 LT |
692 | baud = C_BAUD(tty); |
693 | if (baud & CBAUDEX) { | |
694 | baud &= ~CBAUDEX; | |
d8d16e47 | 695 | |
1da177e4 LT |
696 | /* if CBAUDEX bit is on and the baud is set to either 50 or 75 |
697 | * then the card is programmed for 57.6Kbps or 115Kbps | |
698 | * respectively. | |
d8d16e47 JS |
699 | */ |
700 | ||
7edc136a JS |
701 | /* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */ |
702 | if (baud < 1 || baud > 4) | |
d450b5a0 | 703 | tty->termios->c_cflag &= ~CBAUDEX; |
1da177e4 LT |
704 | else |
705 | baud += 15; | |
d8d16e47 | 706 | } |
1da177e4 | 707 | if (baud == 15) { |
d8d16e47 JS |
708 | |
709 | /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set | |
1da177e4 LT |
710 | * by the set_serial_info ioctl ... this is done by |
711 | * the 'setserial' utility. | |
d8d16e47 JS |
712 | */ |
713 | ||
f1d03228 | 714 | if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
d8d16e47 | 715 | baud++; /* 57.6 Kbps */ |
f1d03228 | 716 | if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
251b8dd7 | 717 | baud += 2; /* 115 Kbps */ |
f1d03228 | 718 | if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) |
7edc136a | 719 | baud += 3; /* 230 kbps*/ |
f1d03228 | 720 | if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) |
7edc136a | 721 | baud += 4; /* 460 kbps*/ |
1da177e4 LT |
722 | } |
723 | if (linuxb_to_isib[baud] == -1) { | |
724 | /* hang up */ | |
d8d16e47 JS |
725 | drop_dtr(port); |
726 | return; | |
251b8dd7 | 727 | } else |
1da177e4 | 728 | raise_dtr(port); |
d8d16e47 | 729 | |
cfe7c09a | 730 | if (WaitTillCardIsFree(base) == 0) { |
251b8dd7 | 731 | outw(0x8000 | (channel << shift_count) | 0x03, base); |
1da177e4 LT |
732 | outw(linuxb_to_isib[baud] << 8 | 0x03, base); |
733 | channel_setup = 0; | |
251b8dd7 | 734 | switch (C_CSIZE(tty)) { |
d8d16e47 JS |
735 | case CS5: |
736 | channel_setup |= ISICOM_CS5; | |
737 | break; | |
738 | case CS6: | |
739 | channel_setup |= ISICOM_CS6; | |
740 | break; | |
741 | case CS7: | |
742 | channel_setup |= ISICOM_CS7; | |
743 | break; | |
744 | case CS8: | |
745 | channel_setup |= ISICOM_CS8; | |
746 | break; | |
1da177e4 | 747 | } |
d8d16e47 | 748 | |
1da177e4 LT |
749 | if (C_CSTOPB(tty)) |
750 | channel_setup |= ISICOM_2SB; | |
751 | if (C_PARENB(tty)) { | |
752 | channel_setup |= ISICOM_EVPAR; | |
753 | if (C_PARODD(tty)) | |
d8d16e47 | 754 | channel_setup |= ISICOM_ODPAR; |
1da177e4 | 755 | } |
d8d16e47 | 756 | outw(channel_setup, base); |
1da177e4 | 757 | InterruptTheCard(base); |
d8d16e47 | 758 | } |
1da177e4 | 759 | if (C_CLOCAL(tty)) |
f1d03228 | 760 | port->port.flags &= ~ASYNC_CHECK_CD; |
1da177e4 | 761 | else |
f1d03228 | 762 | port->port.flags |= ASYNC_CHECK_CD; |
d8d16e47 | 763 | |
1da177e4 LT |
764 | /* flow control settings ...*/ |
765 | flow_ctrl = 0; | |
f1d03228 | 766 | port->port.flags &= ~ASYNC_CTS_FLOW; |
1da177e4 | 767 | if (C_CRTSCTS(tty)) { |
f1d03228 | 768 | port->port.flags |= ASYNC_CTS_FLOW; |
1da177e4 | 769 | flow_ctrl |= ISICOM_CTSRTS; |
d8d16e47 JS |
770 | } |
771 | if (I_IXON(tty)) | |
1da177e4 LT |
772 | flow_ctrl |= ISICOM_RESPOND_XONXOFF; |
773 | if (I_IXOFF(tty)) | |
d8d16e47 JS |
774 | flow_ctrl |= ISICOM_INITIATE_XONXOFF; |
775 | ||
cfe7c09a | 776 | if (WaitTillCardIsFree(base) == 0) { |
251b8dd7 | 777 | outw(0x8000 | (channel << shift_count) | 0x04, base); |
1da177e4 LT |
778 | outw(flow_ctrl << 8 | 0x05, base); |
779 | outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base); | |
780 | InterruptTheCard(base); | |
1da177e4 | 781 | } |
d8d16e47 | 782 | |
1da177e4 LT |
783 | /* rx enabled -> enable port for rx on the card */ |
784 | if (C_CREAD(tty)) { | |
785 | card->port_status |= (1 << channel); | |
786 | outw(card->port_status, base + 0x02); | |
787 | } | |
788 | } | |
1da177e4 | 789 | |
d8d16e47 JS |
790 | /* open et all */ |
791 | ||
792 | static inline void isicom_setup_board(struct isi_board *bp) | |
1da177e4 LT |
793 | { |
794 | int channel; | |
d8d16e47 | 795 | struct isi_port *port; |
1da177e4 | 796 | unsigned long flags; |
d8d16e47 | 797 | |
1da177e4 LT |
798 | spin_lock_irqsave(&bp->card_lock, flags); |
799 | if (bp->status & BOARD_ACTIVE) { | |
800 | spin_unlock_irqrestore(&bp->card_lock, flags); | |
801 | return; | |
802 | } | |
803 | port = bp->ports; | |
804 | bp->status |= BOARD_ACTIVE; | |
d8d16e47 | 805 | for (channel = 0; channel < bp->port_count; channel++, port++) |
1da177e4 | 806 | drop_dtr_rts(port); |
cfe7c09a | 807 | spin_unlock_irqrestore(&bp->card_lock, flags); |
1da177e4 | 808 | } |
d8d16e47 | 809 | |
d450b5a0 | 810 | static int isicom_setup_port(struct tty_struct *tty) |
1da177e4 | 811 | { |
d450b5a0 | 812 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 813 | struct isi_board *card = port->card; |
1da177e4 | 814 | unsigned long flags; |
d8d16e47 | 815 | |
f1d03228 | 816 | if (port->port.flags & ASYNC_INITIALIZED) |
1da177e4 | 817 | return 0; |
f1d03228 AC |
818 | if (tty_port_alloc_xmit_buf(&port->port) < 0) |
819 | return -ENOMEM; | |
1da177e4 LT |
820 | |
821 | spin_lock_irqsave(&card->card_lock, flags); | |
d450b5a0 | 822 | clear_bit(TTY_IO_ERROR, &tty->flags); |
f1d03228 | 823 | if (port->port.count == 1) |
1da177e4 | 824 | card->count++; |
d8d16e47 | 825 | |
1da177e4 | 826 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; |
d8d16e47 | 827 | |
1da177e4 | 828 | /* discard any residual data */ |
cfe7c09a JS |
829 | if (WaitTillCardIsFree(card->base) == 0) { |
830 | outw(0x8000 | (port->channel << card->shift_count) | 0x02, | |
831 | card->base); | |
832 | outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base); | |
833 | InterruptTheCard(card->base); | |
834 | } | |
d8d16e47 | 835 | |
d450b5a0 | 836 | isicom_config_port(tty); |
f1d03228 | 837 | port->port.flags |= ASYNC_INITIALIZED; |
1da177e4 | 838 | spin_unlock_irqrestore(&card->card_lock, flags); |
d8d16e47 JS |
839 | |
840 | return 0; | |
841 | } | |
842 | ||
31f35939 AC |
843 | static int isicom_carrier_raised(struct tty_port *port) |
844 | { | |
845 | struct isi_port *ip = container_of(port, struct isi_port, port); | |
846 | return (ip->status & ISI_DCD)?1 : 0; | |
847 | } | |
848 | ||
d8d16e47 | 849 | static int isicom_open(struct tty_struct *tty, struct file *filp) |
1da177e4 | 850 | { |
d8d16e47 JS |
851 | struct isi_port *port; |
852 | struct isi_board *card; | |
17c4edf0 JS |
853 | unsigned int board; |
854 | int error, line; | |
1da177e4 LT |
855 | |
856 | line = tty->index; | |
857 | if (line < 0 || line > PORT_COUNT-1) | |
858 | return -ENODEV; | |
859 | board = BOARD(line); | |
860 | card = &isi_card[board]; | |
d8d16e47 | 861 | |
1da177e4 LT |
862 | if (!(card->status & FIRMWARE_LOADED)) |
863 | return -ENODEV; | |
d8d16e47 | 864 | |
1da177e4 LT |
865 | /* open on a port greater than the port count for the card !!! */ |
866 | if (line > ((board * 16) + card->port_count - 1)) | |
867 | return -ENODEV; | |
868 | ||
d8d16e47 | 869 | port = &isi_ports[line]; |
1da177e4 LT |
870 | if (isicom_paranoia_check(port, tty->name, "isicom_open")) |
871 | return -ENODEV; | |
d8d16e47 JS |
872 | |
873 | isicom_setup_board(card); | |
874 | ||
36c621d8 | 875 | /* FIXME: locking on port.count etc */ |
f1d03228 | 876 | port->port.count++; |
1da177e4 | 877 | tty->driver_data = port; |
d450b5a0 AC |
878 | tty_port_tty_set(&port->port, tty); |
879 | error = isicom_setup_port(tty); | |
251b8dd7 | 880 | if (error == 0) |
36c621d8 | 881 | error = tty_port_block_til_ready(&port->port, tty, filp); |
251b8dd7 | 882 | return error; |
1da177e4 | 883 | } |
d8d16e47 | 884 | |
1da177e4 LT |
885 | /* close et all */ |
886 | ||
d8d16e47 | 887 | static inline void isicom_shutdown_board(struct isi_board *bp) |
1da177e4 | 888 | { |
251b8dd7 | 889 | if (bp->status & BOARD_ACTIVE) |
1da177e4 | 890 | bp->status &= ~BOARD_ACTIVE; |
1da177e4 LT |
891 | } |
892 | ||
cfe7c09a | 893 | /* card->lock HAS to be held */ |
d8d16e47 | 894 | static void isicom_shutdown_port(struct isi_port *port) |
1da177e4 | 895 | { |
d8d16e47 JS |
896 | struct isi_board *card = port->card; |
897 | struct tty_struct *tty; | |
d8d16e47 | 898 | |
d450b5a0 | 899 | tty = tty_port_tty_get(&port->port); |
1da177e4 | 900 | |
d450b5a0 AC |
901 | if (!(port->port.flags & ASYNC_INITIALIZED)) { |
902 | tty_kref_put(tty); | |
1da177e4 | 903 | return; |
d450b5a0 | 904 | } |
cfe7c09a | 905 | |
f1d03228 AC |
906 | tty_port_free_xmit_buf(&port->port); |
907 | port->port.flags &= ~ASYNC_INITIALIZED; | |
1da177e4 | 908 | /* 3rd October 2000 : Vinayak P Risbud */ |
d450b5a0 | 909 | tty_port_tty_set(&port->port, NULL); |
d8d16e47 | 910 | |
1da177e4 LT |
911 | /*Fix done by Anil .S on 30-04-2001 |
912 | remote login through isi port has dtr toggle problem | |
913 | due to which the carrier drops before the password prompt | |
d8d16e47 | 914 | appears on the remote end. Now we drop the dtr only if the |
1da177e4 | 915 | HUPCL(Hangup on close) flag is set for the tty*/ |
d8d16e47 JS |
916 | |
917 | if (C_HUPCL(tty)) | |
1da177e4 LT |
918 | /* drop dtr on this port */ |
919 | drop_dtr(port); | |
d8d16e47 JS |
920 | |
921 | /* any other port uninits */ | |
1da177e4 LT |
922 | if (tty) |
923 | set_bit(TTY_IO_ERROR, &tty->flags); | |
d8d16e47 | 924 | |
1da177e4 | 925 | if (--card->count < 0) { |
aaa246ea | 926 | pr_dbg("isicom_shutdown_port: bad board(0x%lx) count %d.\n", |
1da177e4 | 927 | card->base, card->count); |
d8d16e47 | 928 | card->count = 0; |
1da177e4 | 929 | } |
d8d16e47 | 930 | |
a547dfe9 | 931 | /* last port was closed, shutdown that boad too */ |
d8d16e47 | 932 | if (C_HUPCL(tty)) { |
1da177e4 LT |
933 | if (!card->count) |
934 | isicom_shutdown_board(card); | |
935 | } | |
bbb8e6bf | 936 | tty_kref_put(tty); |
1da177e4 LT |
937 | } |
938 | ||
978e595f AC |
939 | static void isicom_flush_buffer(struct tty_struct *tty) |
940 | { | |
941 | struct isi_port *port = tty->driver_data; | |
942 | struct isi_board *card = port->card; | |
943 | unsigned long flags; | |
944 | ||
945 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer")) | |
946 | return; | |
947 | ||
948 | spin_lock_irqsave(&card->card_lock, flags); | |
949 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; | |
950 | spin_unlock_irqrestore(&card->card_lock, flags); | |
951 | ||
952 | tty_wakeup(tty); | |
953 | } | |
954 | ||
d8d16e47 | 955 | static void isicom_close(struct tty_struct *tty, struct file *filp) |
1da177e4 | 956 | { |
a6614999 AC |
957 | struct isi_port *ip = tty->driver_data; |
958 | struct tty_port *port = &ip->port; | |
c387fd85 | 959 | struct isi_board *card; |
1da177e4 | 960 | unsigned long flags; |
d8d16e47 | 961 | |
a6614999 | 962 | BUG_ON(!ip); |
d8d16e47 | 963 | |
a6614999 AC |
964 | card = ip->card; |
965 | if (isicom_paranoia_check(ip, tty->name, "isicom_close")) | |
1da177e4 | 966 | return; |
d8d16e47 | 967 | |
d8d16e47 | 968 | /* indicate to the card that no more data can be received |
1da177e4 LT |
969 | on this port */ |
970 | spin_lock_irqsave(&card->card_lock, flags); | |
a6614999 AC |
971 | if (port->flags & ASYNC_INITIALIZED) { |
972 | card->port_status &= ~(1 << ip->channel); | |
1da177e4 | 973 | outw(card->port_status, card->base + 0x02); |
d8d16e47 | 974 | } |
a6614999 | 975 | isicom_shutdown_port(ip); |
1da177e4 | 976 | spin_unlock_irqrestore(&card->card_lock, flags); |
d8d16e47 | 977 | |
978e595f | 978 | isicom_flush_buffer(tty); |
a6614999 AC |
979 | |
980 | tty_port_close_end(port, tty); | |
1da177e4 LT |
981 | } |
982 | ||
983 | /* write et all */ | |
d8d16e47 JS |
984 | static int isicom_write(struct tty_struct *tty, const unsigned char *buf, |
985 | int count) | |
1da177e4 | 986 | { |
8070e35c | 987 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 988 | struct isi_board *card = port->card; |
1da177e4 LT |
989 | unsigned long flags; |
990 | int cnt, total = 0; | |
991 | ||
992 | if (isicom_paranoia_check(port, tty->name, "isicom_write")) | |
993 | return 0; | |
d8d16e47 | 994 | |
1da177e4 | 995 | spin_lock_irqsave(&card->card_lock, flags); |
d8d16e47 | 996 | |
251b8dd7 | 997 | while (1) { |
a547dfe9 JS |
998 | cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt |
999 | - 1, SERIAL_XMIT_SIZE - port->xmit_head)); | |
d8d16e47 | 1000 | if (cnt <= 0) |
1da177e4 | 1001 | break; |
d8d16e47 | 1002 | |
f1d03228 | 1003 | memcpy(port->port.xmit_buf + port->xmit_head, buf, cnt); |
a547dfe9 JS |
1004 | port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE |
1005 | - 1); | |
1da177e4 LT |
1006 | port->xmit_cnt += cnt; |
1007 | buf += cnt; | |
1008 | count -= cnt; | |
1009 | total += cnt; | |
d8d16e47 | 1010 | } |
1da177e4 LT |
1011 | if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
1012 | port->status |= ISI_TXOK; | |
1013 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 1014 | return total; |
1da177e4 LT |
1015 | } |
1016 | ||
1017 | /* put_char et all */ | |
f34d7a5b | 1018 | static int isicom_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1019 | { |
8070e35c | 1020 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1021 | struct isi_board *card = port->card; |
1da177e4 | 1022 | unsigned long flags; |
d8d16e47 | 1023 | |
1da177e4 | 1024 | if (isicom_paranoia_check(port, tty->name, "isicom_put_char")) |
f34d7a5b | 1025 | return 0; |
d8d16e47 | 1026 | |
1da177e4 | 1027 | spin_lock_irqsave(&card->card_lock, flags); |
f34d7a5b AC |
1028 | if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { |
1029 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1030 | return 0; | |
1031 | } | |
d8d16e47 | 1032 | |
f1d03228 | 1033 | port->port.xmit_buf[port->xmit_head++] = ch; |
1da177e4 LT |
1034 | port->xmit_head &= (SERIAL_XMIT_SIZE - 1); |
1035 | port->xmit_cnt++; | |
1036 | spin_unlock_irqrestore(&card->card_lock, flags); | |
f34d7a5b | 1037 | return 1; |
1da177e4 LT |
1038 | } |
1039 | ||
1040 | /* flush_chars et all */ | |
d8d16e47 | 1041 | static void isicom_flush_chars(struct tty_struct *tty) |
1da177e4 | 1042 | { |
8070e35c | 1043 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1044 | |
1da177e4 LT |
1045 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars")) |
1046 | return; | |
d8d16e47 | 1047 | |
a547dfe9 | 1048 | if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
f1d03228 | 1049 | !port->port.xmit_buf) |
1da177e4 | 1050 | return; |
d8d16e47 | 1051 | |
1da177e4 LT |
1052 | /* this tells the transmitter to consider this port for |
1053 | data output to the card ... that's the best we can do. */ | |
d8d16e47 | 1054 | port->status |= ISI_TXOK; |
1da177e4 LT |
1055 | } |
1056 | ||
1057 | /* write_room et all */ | |
d8d16e47 | 1058 | static int isicom_write_room(struct tty_struct *tty) |
1da177e4 | 1059 | { |
8070e35c | 1060 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1061 | int free; |
1062 | ||
1063 | if (isicom_paranoia_check(port, tty->name, "isicom_write_room")) | |
1064 | return 0; | |
d8d16e47 | 1065 | |
1da177e4 LT |
1066 | free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; |
1067 | if (free < 0) | |
1068 | free = 0; | |
1069 | return free; | |
1070 | } | |
1071 | ||
1072 | /* chars_in_buffer et all */ | |
d8d16e47 | 1073 | static int isicom_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1074 | { |
8070e35c | 1075 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1076 | if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer")) |
1077 | return 0; | |
1078 | return port->xmit_cnt; | |
1079 | } | |
1080 | ||
1081 | /* ioctl et all */ | |
6d889724 | 1082 | static int isicom_send_break(struct tty_struct *tty, int length) |
1da177e4 | 1083 | { |
6d889724 | 1084 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1085 | struct isi_board *card = port->card; |
8070e35c | 1086 | unsigned long base = card->base; |
d8d16e47 | 1087 | |
6d889724 AC |
1088 | if (length == -1) |
1089 | return -EOPNOTSUPP; | |
1090 | ||
d8d16e47 | 1091 | if (!lock_card(card)) |
6d889724 | 1092 | return -EINVAL; |
d8d16e47 | 1093 | |
1da177e4 LT |
1094 | outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base); |
1095 | outw((length & 0xff) << 8 | 0x00, base); | |
1096 | outw((length & 0xff00), base); | |
1097 | InterruptTheCard(base); | |
1098 | ||
1099 | unlock_card(card); | |
6d889724 | 1100 | return 0; |
1da177e4 LT |
1101 | } |
1102 | ||
1103 | static int isicom_tiocmget(struct tty_struct *tty, struct file *file) | |
1104 | { | |
8070e35c | 1105 | struct isi_port *port = tty->driver_data; |
1da177e4 | 1106 | /* just send the port status */ |
8070e35c | 1107 | u16 status = port->status; |
1da177e4 LT |
1108 | |
1109 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) | |
1110 | return -ENODEV; | |
d8d16e47 | 1111 | |
1da177e4 LT |
1112 | return ((status & ISI_RTS) ? TIOCM_RTS : 0) | |
1113 | ((status & ISI_DTR) ? TIOCM_DTR : 0) | | |
1114 | ((status & ISI_DCD) ? TIOCM_CAR : 0) | | |
1115 | ((status & ISI_DSR) ? TIOCM_DSR : 0) | | |
1116 | ((status & ISI_CTS) ? TIOCM_CTS : 0) | | |
1117 | ((status & ISI_RI ) ? TIOCM_RI : 0); | |
1118 | } | |
1119 | ||
1120 | static int isicom_tiocmset(struct tty_struct *tty, struct file *file, | |
d8d16e47 | 1121 | unsigned int set, unsigned int clear) |
1da177e4 | 1122 | { |
8070e35c | 1123 | struct isi_port *port = tty->driver_data; |
cfe7c09a | 1124 | unsigned long flags; |
d8d16e47 | 1125 | |
1da177e4 LT |
1126 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
1127 | return -ENODEV; | |
d8d16e47 | 1128 | |
cfe7c09a | 1129 | spin_lock_irqsave(&port->card->card_lock, flags); |
1da177e4 LT |
1130 | if (set & TIOCM_RTS) |
1131 | raise_rts(port); | |
1132 | if (set & TIOCM_DTR) | |
1133 | raise_dtr(port); | |
1134 | ||
1135 | if (clear & TIOCM_RTS) | |
1136 | drop_rts(port); | |
1137 | if (clear & TIOCM_DTR) | |
1138 | drop_dtr(port); | |
cfe7c09a | 1139 | spin_unlock_irqrestore(&port->card->card_lock, flags); |
1da177e4 LT |
1140 | |
1141 | return 0; | |
d8d16e47 | 1142 | } |
1da177e4 | 1143 | |
d450b5a0 AC |
1144 | static int isicom_set_serial_info(struct tty_struct *tty, |
1145 | struct serial_struct __user *info) | |
1da177e4 | 1146 | { |
d450b5a0 | 1147 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1148 | struct serial_struct newinfo; |
1149 | int reconfig_port; | |
1150 | ||
d8d16e47 | 1151 | if (copy_from_user(&newinfo, info, sizeof(newinfo))) |
1da177e4 | 1152 | return -EFAULT; |
d8d16e47 | 1153 | |
1eac4947 AC |
1154 | lock_kernel(); |
1155 | ||
f1d03228 | 1156 | reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) != |
d8d16e47 JS |
1157 | (newinfo.flags & ASYNC_SPD_MASK)); |
1158 | ||
1da177e4 | 1159 | if (!capable(CAP_SYS_ADMIN)) { |
44b7d1b3 AC |
1160 | if ((newinfo.close_delay != port->port.close_delay) || |
1161 | (newinfo.closing_wait != port->port.closing_wait) || | |
d8d16e47 | 1162 | ((newinfo.flags & ~ASYNC_USR_MASK) != |
f1d03228 | 1163 | (port->port.flags & ~ASYNC_USR_MASK))) { |
1eac4947 | 1164 | unlock_kernel(); |
1da177e4 | 1165 | return -EPERM; |
1eac4947 | 1166 | } |
f1d03228 | 1167 | port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) | |
1da177e4 | 1168 | (newinfo.flags & ASYNC_USR_MASK)); |
251b8dd7 | 1169 | } else { |
44b7d1b3 AC |
1170 | port->port.close_delay = newinfo.close_delay; |
1171 | port->port.closing_wait = newinfo.closing_wait; | |
f1d03228 | 1172 | port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) | |
1da177e4 LT |
1173 | (newinfo.flags & ASYNC_FLAGS)); |
1174 | } | |
1175 | if (reconfig_port) { | |
cfe7c09a JS |
1176 | unsigned long flags; |
1177 | spin_lock_irqsave(&port->card->card_lock, flags); | |
d450b5a0 | 1178 | isicom_config_port(tty); |
cfe7c09a | 1179 | spin_unlock_irqrestore(&port->card->card_lock, flags); |
1da177e4 | 1180 | } |
1eac4947 | 1181 | unlock_kernel(); |
d8d16e47 JS |
1182 | return 0; |
1183 | } | |
1da177e4 | 1184 | |
d8d16e47 JS |
1185 | static int isicom_get_serial_info(struct isi_port *port, |
1186 | struct serial_struct __user *info) | |
1da177e4 LT |
1187 | { |
1188 | struct serial_struct out_info; | |
d8d16e47 | 1189 | |
1eac4947 | 1190 | lock_kernel(); |
1da177e4 LT |
1191 | memset(&out_info, 0, sizeof(out_info)); |
1192 | /* out_info.type = ? */ | |
1193 | out_info.line = port - isi_ports; | |
1194 | out_info.port = port->card->base; | |
1195 | out_info.irq = port->card->irq; | |
f1d03228 | 1196 | out_info.flags = port->port.flags; |
1da177e4 | 1197 | /* out_info.baud_base = ? */ |
44b7d1b3 AC |
1198 | out_info.close_delay = port->port.close_delay; |
1199 | out_info.closing_wait = port->port.closing_wait; | |
1eac4947 | 1200 | unlock_kernel(); |
d8d16e47 | 1201 | if (copy_to_user(info, &out_info, sizeof(out_info))) |
1da177e4 LT |
1202 | return -EFAULT; |
1203 | return 0; | |
d8d16e47 | 1204 | } |
1da177e4 | 1205 | |
d8d16e47 JS |
1206 | static int isicom_ioctl(struct tty_struct *tty, struct file *filp, |
1207 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 1208 | { |
8070e35c | 1209 | struct isi_port *port = tty->driver_data; |
1da177e4 | 1210 | void __user *argp = (void __user *)arg; |
1da177e4 LT |
1211 | |
1212 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) | |
1213 | return -ENODEV; | |
1214 | ||
251b8dd7 | 1215 | switch (cmd) { |
d8d16e47 JS |
1216 | case TIOCGSERIAL: |
1217 | return isicom_get_serial_info(port, argp); | |
1218 | ||
1219 | case TIOCSSERIAL: | |
d450b5a0 | 1220 | return isicom_set_serial_info(tty, argp); |
d8d16e47 JS |
1221 | |
1222 | default: | |
1223 | return -ENOIOCTLCMD; | |
1da177e4 LT |
1224 | } |
1225 | return 0; | |
1226 | } | |
1227 | ||
1228 | /* set_termios et all */ | |
d8d16e47 | 1229 | static void isicom_set_termios(struct tty_struct *tty, |
606d099c | 1230 | struct ktermios *old_termios) |
1da177e4 | 1231 | { |
8070e35c | 1232 | struct isi_port *port = tty->driver_data; |
cfe7c09a | 1233 | unsigned long flags; |
d8d16e47 | 1234 | |
1da177e4 LT |
1235 | if (isicom_paranoia_check(port, tty->name, "isicom_set_termios")) |
1236 | return; | |
d8d16e47 | 1237 | |
1da177e4 | 1238 | if (tty->termios->c_cflag == old_termios->c_cflag && |
d8d16e47 | 1239 | tty->termios->c_iflag == old_termios->c_iflag) |
1da177e4 | 1240 | return; |
d8d16e47 | 1241 | |
cfe7c09a | 1242 | spin_lock_irqsave(&port->card->card_lock, flags); |
d450b5a0 | 1243 | isicom_config_port(tty); |
cfe7c09a | 1244 | spin_unlock_irqrestore(&port->card->card_lock, flags); |
d8d16e47 | 1245 | |
1da177e4 | 1246 | if ((old_termios->c_cflag & CRTSCTS) && |
d8d16e47 | 1247 | !(tty->termios->c_cflag & CRTSCTS)) { |
1da177e4 | 1248 | tty->hw_stopped = 0; |
d8d16e47 JS |
1249 | isicom_start(tty); |
1250 | } | |
1da177e4 LT |
1251 | } |
1252 | ||
1253 | /* throttle et all */ | |
d8d16e47 | 1254 | static void isicom_throttle(struct tty_struct *tty) |
1da177e4 | 1255 | { |
8070e35c | 1256 | struct isi_port *port = tty->driver_data; |
d8d16e47 JS |
1257 | struct isi_board *card = port->card; |
1258 | ||
1da177e4 LT |
1259 | if (isicom_paranoia_check(port, tty->name, "isicom_throttle")) |
1260 | return; | |
d8d16e47 | 1261 | |
1da177e4 LT |
1262 | /* tell the card that this port cannot handle any more data for now */ |
1263 | card->port_status &= ~(1 << port->channel); | |
1264 | outw(card->port_status, card->base + 0x02); | |
1265 | } | |
1266 | ||
1267 | /* unthrottle et all */ | |
d8d16e47 | 1268 | static void isicom_unthrottle(struct tty_struct *tty) |
1da177e4 | 1269 | { |
8070e35c | 1270 | struct isi_port *port = tty->driver_data; |
d8d16e47 JS |
1271 | struct isi_board *card = port->card; |
1272 | ||
1da177e4 LT |
1273 | if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle")) |
1274 | return; | |
d8d16e47 | 1275 | |
1da177e4 LT |
1276 | /* tell the card that this port is ready to accept more data */ |
1277 | card->port_status |= (1 << port->channel); | |
1278 | outw(card->port_status, card->base + 0x02); | |
1279 | } | |
1280 | ||
1281 | /* stop et all */ | |
d8d16e47 | 1282 | static void isicom_stop(struct tty_struct *tty) |
1da177e4 | 1283 | { |
8070e35c | 1284 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1285 | |
1286 | if (isicom_paranoia_check(port, tty->name, "isicom_stop")) | |
1287 | return; | |
d8d16e47 | 1288 | |
1da177e4 LT |
1289 | /* this tells the transmitter not to consider this port for |
1290 | data output to the card. */ | |
1291 | port->status &= ~ISI_TXOK; | |
1292 | } | |
1293 | ||
1294 | /* start et all */ | |
d8d16e47 | 1295 | static void isicom_start(struct tty_struct *tty) |
1da177e4 | 1296 | { |
8070e35c | 1297 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1298 | |
1da177e4 LT |
1299 | if (isicom_paranoia_check(port, tty->name, "isicom_start")) |
1300 | return; | |
d8d16e47 | 1301 | |
1da177e4 LT |
1302 | /* this tells the transmitter to consider this port for |
1303 | data output to the card. */ | |
1304 | port->status |= ISI_TXOK; | |
1305 | } | |
1306 | ||
d8d16e47 | 1307 | static void isicom_hangup(struct tty_struct *tty) |
1da177e4 | 1308 | { |
8070e35c | 1309 | struct isi_port *port = tty->driver_data; |
cfe7c09a | 1310 | unsigned long flags; |
d8d16e47 | 1311 | |
1da177e4 LT |
1312 | if (isicom_paranoia_check(port, tty->name, "isicom_hangup")) |
1313 | return; | |
d8d16e47 | 1314 | |
cfe7c09a | 1315 | spin_lock_irqsave(&port->card->card_lock, flags); |
1da177e4 | 1316 | isicom_shutdown_port(port); |
cfe7c09a JS |
1317 | spin_unlock_irqrestore(&port->card->card_lock, flags); |
1318 | ||
3e61696b | 1319 | tty_port_hangup(&port->port); |
1da177e4 LT |
1320 | } |
1321 | ||
1da177e4 | 1322 | |
9ac0948b JS |
1323 | /* |
1324 | * Driver init and deinit functions | |
1325 | */ | |
1da177e4 | 1326 | |
b68e31d0 | 1327 | static const struct tty_operations isicom_ops = { |
d8d16e47 JS |
1328 | .open = isicom_open, |
1329 | .close = isicom_close, | |
1330 | .write = isicom_write, | |
1331 | .put_char = isicom_put_char, | |
1332 | .flush_chars = isicom_flush_chars, | |
1333 | .write_room = isicom_write_room, | |
1da177e4 | 1334 | .chars_in_buffer = isicom_chars_in_buffer, |
d8d16e47 JS |
1335 | .ioctl = isicom_ioctl, |
1336 | .set_termios = isicom_set_termios, | |
1337 | .throttle = isicom_throttle, | |
1338 | .unthrottle = isicom_unthrottle, | |
1339 | .stop = isicom_stop, | |
1340 | .start = isicom_start, | |
1341 | .hangup = isicom_hangup, | |
1342 | .flush_buffer = isicom_flush_buffer, | |
1343 | .tiocmget = isicom_tiocmget, | |
1344 | .tiocmset = isicom_tiocmset, | |
6d889724 | 1345 | .break_ctl = isicom_send_break, |
1da177e4 LT |
1346 | }; |
1347 | ||
31f35939 AC |
1348 | static const struct tty_port_operations isicom_port_ops = { |
1349 | .carrier_raised = isicom_carrier_raised, | |
fcc8ac18 | 1350 | .dtr_rts = isicom_dtr_rts, |
31f35939 AC |
1351 | }; |
1352 | ||
9ac0948b JS |
1353 | static int __devinit reset_card(struct pci_dev *pdev, |
1354 | const unsigned int card, unsigned int *signature) | |
1da177e4 | 1355 | { |
9ac0948b JS |
1356 | struct isi_board *board = pci_get_drvdata(pdev); |
1357 | unsigned long base = board->base; | |
f0a0ba6d | 1358 | unsigned int sig, portcount = 0; |
9ac0948b | 1359 | int retval = 0; |
d8d16e47 | 1360 | |
9ac0948b JS |
1361 | dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1, |
1362 | base); | |
d8d16e47 | 1363 | |
9ac0948b | 1364 | inw(base + 0x8); |
d8d16e47 | 1365 | |
f0a0ba6d | 1366 | msleep(10); |
9ac0948b JS |
1367 | |
1368 | outw(0, base + 0x8); /* Reset */ | |
1369 | ||
f0a0ba6d | 1370 | msleep(1000); |
9ac0948b | 1371 | |
f0a0ba6d JS |
1372 | sig = inw(base + 0x4) & 0xff; |
1373 | ||
1374 | if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd && | |
1375 | sig != 0xee) { | |
1376 | dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible " | |
1377 | "bad I/O Port Address 0x%lx).\n", card + 1, base); | |
1378 | dev_dbg(&pdev->dev, "Sig=0x%x\n", sig); | |
1379 | retval = -EIO; | |
1380 | goto end; | |
1381 | } | |
1382 | ||
1383 | msleep(10); | |
9ac0948b | 1384 | |
18234f88 | 1385 | portcount = inw(base + 0x2); |
07fb6f26 | 1386 | if (!(inw(base + 0xe) & 0x1) || (portcount != 0 && portcount != 4 && |
f0a0ba6d | 1387 | portcount != 8 && portcount != 16)) { |
898eb71c | 1388 | dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.\n", |
f0a0ba6d | 1389 | card + 1); |
18234f88 JS |
1390 | retval = -EIO; |
1391 | goto end; | |
9ac0948b JS |
1392 | } |
1393 | ||
f0a0ba6d | 1394 | switch (sig) { |
9ac0948b JS |
1395 | case 0xa5: |
1396 | case 0xbb: | |
1397 | case 0xdd: | |
18234f88 | 1398 | board->port_count = (portcount == 4) ? 4 : 8; |
9ac0948b JS |
1399 | board->shift_count = 12; |
1400 | break; | |
1401 | case 0xcc: | |
f0a0ba6d | 1402 | case 0xee: |
9ac0948b JS |
1403 | board->port_count = 16; |
1404 | board->shift_count = 11; | |
1405 | break; | |
d8d16e47 | 1406 | } |
9ac0948b | 1407 | dev_info(&pdev->dev, "-Done\n"); |
f0a0ba6d | 1408 | *signature = sig; |
d8d16e47 | 1409 | |
9ac0948b JS |
1410 | end: |
1411 | return retval; | |
1da177e4 LT |
1412 | } |
1413 | ||
e65c1db1 JS |
1414 | static int __devinit load_firmware(struct pci_dev *pdev, |
1415 | const unsigned int index, const unsigned int signature) | |
1416 | { | |
1417 | struct isi_board *board = pci_get_drvdata(pdev); | |
1418 | const struct firmware *fw; | |
1419 | unsigned long base = board->base; | |
1420 | unsigned int a; | |
1421 | u16 word_count, status; | |
1422 | int retval = -EIO; | |
1423 | char *name; | |
1424 | u8 *data; | |
1425 | ||
1426 | struct stframe { | |
1427 | u16 addr; | |
1428 | u16 count; | |
1429 | u8 data[0]; | |
1430 | } *frame; | |
1431 | ||
1432 | switch (signature) { | |
1433 | case 0xa5: | |
1434 | name = "isi608.bin"; | |
1435 | break; | |
1436 | case 0xbb: | |
1437 | name = "isi608em.bin"; | |
1438 | break; | |
1439 | case 0xcc: | |
1440 | name = "isi616em.bin"; | |
1441 | break; | |
1442 | case 0xdd: | |
1443 | name = "isi4608.bin"; | |
1444 | break; | |
1445 | case 0xee: | |
1446 | name = "isi4616.bin"; | |
1447 | break; | |
1448 | default: | |
1449 | dev_err(&pdev->dev, "Unknown signature.\n"); | |
1450 | goto end; | |
251b8dd7 | 1451 | } |
e65c1db1 JS |
1452 | |
1453 | retval = request_firmware(&fw, name, &pdev->dev); | |
1454 | if (retval) | |
1455 | goto end; | |
1456 | ||
e4e04088 JS |
1457 | retval = -EIO; |
1458 | ||
e65c1db1 JS |
1459 | for (frame = (struct stframe *)fw->data; |
1460 | frame < (struct stframe *)(fw->data + fw->size); | |
e4e04088 JS |
1461 | frame = (struct stframe *)((u8 *)(frame + 1) + |
1462 | frame->count)) { | |
e65c1db1 JS |
1463 | if (WaitTillCardIsFree(base)) |
1464 | goto errrelfw; | |
1465 | ||
1466 | outw(0xf0, base); /* start upload sequence */ | |
1467 | outw(0x00, base); | |
1468 | outw(frame->addr, base); /* lsb of address */ | |
1469 | ||
1470 | word_count = frame->count / 2 + frame->count % 2; | |
1471 | outw(word_count, base); | |
1472 | InterruptTheCard(base); | |
1473 | ||
1474 | udelay(100); /* 0x2f */ | |
1475 | ||
1476 | if (WaitTillCardIsFree(base)) | |
1477 | goto errrelfw; | |
1478 | ||
251b8dd7 AC |
1479 | status = inw(base + 0x4); |
1480 | if (status != 0) { | |
e65c1db1 | 1481 | dev_warn(&pdev->dev, "Card%d rejected load header:\n" |
ad361c98 JP |
1482 | "Address:0x%x\n" |
1483 | "Count:0x%x\n" | |
1484 | "Status:0x%x\n", | |
1485 | index + 1, frame->addr, frame->count, status); | |
e65c1db1 JS |
1486 | goto errrelfw; |
1487 | } | |
1488 | outsw(base, frame->data, word_count); | |
1489 | ||
1490 | InterruptTheCard(base); | |
1491 | ||
1492 | udelay(50); /* 0x0f */ | |
1493 | ||
1494 | if (WaitTillCardIsFree(base)) | |
1495 | goto errrelfw; | |
1496 | ||
251b8dd7 AC |
1497 | status = inw(base + 0x4); |
1498 | if (status != 0) { | |
e65c1db1 JS |
1499 | dev_err(&pdev->dev, "Card%d got out of sync.Card " |
1500 | "Status:0x%x\n", index + 1, status); | |
1501 | goto errrelfw; | |
1502 | } | |
251b8dd7 | 1503 | } |
e65c1db1 | 1504 | |
e65c1db1 JS |
1505 | /* XXX: should we test it by reading it back and comparing with original like |
1506 | * in load firmware package? */ | |
e4e04088 JS |
1507 | for (frame = (struct stframe *)fw->data; |
1508 | frame < (struct stframe *)(fw->data + fw->size); | |
1509 | frame = (struct stframe *)((u8 *)(frame + 1) + | |
1510 | frame->count)) { | |
e65c1db1 JS |
1511 | if (WaitTillCardIsFree(base)) |
1512 | goto errrelfw; | |
1513 | ||
1514 | outw(0xf1, base); /* start download sequence */ | |
1515 | outw(0x00, base); | |
1516 | outw(frame->addr, base); /* lsb of address */ | |
1517 | ||
1518 | word_count = (frame->count >> 1) + frame->count % 2; | |
1519 | outw(word_count + 1, base); | |
1520 | InterruptTheCard(base); | |
1521 | ||
1522 | udelay(50); /* 0xf */ | |
1523 | ||
1524 | if (WaitTillCardIsFree(base)) | |
1525 | goto errrelfw; | |
1526 | ||
251b8dd7 AC |
1527 | status = inw(base + 0x4); |
1528 | if (status != 0) { | |
e65c1db1 | 1529 | dev_warn(&pdev->dev, "Card%d rejected verify header:\n" |
ad361c98 JP |
1530 | "Address:0x%x\n" |
1531 | "Count:0x%x\n" | |
1532 | "Status: 0x%x\n", | |
1533 | index + 1, frame->addr, frame->count, status); | |
e65c1db1 JS |
1534 | goto errrelfw; |
1535 | } | |
1536 | ||
1537 | data = kmalloc(word_count * 2, GFP_KERNEL); | |
f0671378 JS |
1538 | if (data == NULL) { |
1539 | dev_err(&pdev->dev, "Card%d, firmware upload " | |
1540 | "failed, not enough memory\n", index + 1); | |
1541 | goto errrelfw; | |
1542 | } | |
e65c1db1 JS |
1543 | inw(base); |
1544 | insw(base, data, word_count); | |
1545 | InterruptTheCard(base); | |
1546 | ||
1547 | for (a = 0; a < frame->count; a++) | |
1548 | if (data[a] != frame->data[a]) { | |
1549 | kfree(data); | |
1550 | dev_err(&pdev->dev, "Card%d, firmware upload " | |
1551 | "failed\n", index + 1); | |
1552 | goto errrelfw; | |
1553 | } | |
1554 | kfree(data); | |
1555 | ||
1556 | udelay(50); /* 0xf */ | |
1557 | ||
1558 | if (WaitTillCardIsFree(base)) | |
1559 | goto errrelfw; | |
1560 | ||
251b8dd7 AC |
1561 | status = inw(base + 0x4); |
1562 | if (status != 0) { | |
e65c1db1 JS |
1563 | dev_err(&pdev->dev, "Card%d verify got out of sync. " |
1564 | "Card Status:0x%x\n", index + 1, status); | |
1565 | goto errrelfw; | |
1566 | } | |
1567 | } | |
1568 | ||
e4e04088 JS |
1569 | /* xfer ctrl */ |
1570 | if (WaitTillCardIsFree(base)) | |
1571 | goto errrelfw; | |
1572 | ||
1573 | outw(0xf2, base); | |
1574 | outw(0x800, base); | |
1575 | outw(0x0, base); | |
1576 | outw(0x0, base); | |
1577 | InterruptTheCard(base); | |
1578 | outw(0x0, base + 0x4); /* for ISI4608 cards */ | |
1579 | ||
e65c1db1 JS |
1580 | board->status |= FIRMWARE_LOADED; |
1581 | retval = 0; | |
1582 | ||
1583 | errrelfw: | |
1584 | release_firmware(fw); | |
1585 | end: | |
1586 | return retval; | |
1587 | } | |
1588 | ||
1da177e4 LT |
1589 | /* |
1590 | * Insmod can set static symbols so keep these static | |
1591 | */ | |
1ed0c0b7 | 1592 | static unsigned int card_count; |
9ac0948b JS |
1593 | |
1594 | static int __devinit isicom_probe(struct pci_dev *pdev, | |
1595 | const struct pci_device_id *ent) | |
1596 | { | |
9653a69e | 1597 | unsigned int uninitialized_var(signature), index; |
9ac0948b | 1598 | int retval = -EPERM; |
9ac0948b JS |
1599 | struct isi_board *board = NULL; |
1600 | ||
1ed0c0b7 | 1601 | if (card_count >= BOARD_COUNT) |
9ac0948b JS |
1602 | goto err; |
1603 | ||
e1e5770b JS |
1604 | retval = pci_enable_device(pdev); |
1605 | if (retval) { | |
1606 | dev_err(&pdev->dev, "failed to enable\n"); | |
1607 | goto err; | |
1608 | } | |
1609 | ||
9ac0948b JS |
1610 | dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device); |
1611 | ||
1612 | /* allot the first empty slot in the array */ | |
1613 | for (index = 0; index < BOARD_COUNT; index++) | |
1614 | if (isi_card[index].base == 0) { | |
1615 | board = &isi_card[index]; | |
1616 | break; | |
1617 | } | |
1618 | ||
938a7023 | 1619 | board->index = index; |
4969b3a4 JS |
1620 | board->base = pci_resource_start(pdev, 3); |
1621 | board->irq = pdev->irq; | |
1ed0c0b7 | 1622 | card_count++; |
9ac0948b JS |
1623 | |
1624 | pci_set_drvdata(pdev, board); | |
1625 | ||
78028da9 JS |
1626 | retval = pci_request_region(pdev, 3, ISICOM_NAME); |
1627 | if (retval) { | |
09a4a112 JS |
1628 | dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d " |
1629 | "will be disabled.\n", board->base, board->base + 15, | |
1630 | index + 1); | |
1631 | retval = -EBUSY; | |
1ed0c0b7 | 1632 | goto errdec; |
251b8dd7 | 1633 | } |
9ac0948b | 1634 | |
09a4a112 JS |
1635 | retval = request_irq(board->irq, isicom_interrupt, |
1636 | IRQF_SHARED | IRQF_DISABLED, ISICOM_NAME, board); | |
1637 | if (retval < 0) { | |
1638 | dev_err(&pdev->dev, "Could not install handler at Irq %d. " | |
1639 | "Card%d will be disabled.\n", board->irq, index + 1); | |
9ac0948b | 1640 | goto errunrr; |
09a4a112 | 1641 | } |
9ac0948b JS |
1642 | |
1643 | retval = reset_card(pdev, index, &signature); | |
1644 | if (retval < 0) | |
1645 | goto errunri; | |
1646 | ||
e65c1db1 JS |
1647 | retval = load_firmware(pdev, index, signature); |
1648 | if (retval < 0) | |
1649 | goto errunri; | |
1650 | ||
938a7023 JS |
1651 | for (index = 0; index < board->port_count; index++) |
1652 | tty_register_device(isicom_normal, board->index * 16 + index, | |
1653 | &pdev->dev); | |
1654 | ||
9ac0948b JS |
1655 | return 0; |
1656 | ||
1657 | errunri: | |
1658 | free_irq(board->irq, board); | |
1659 | errunrr: | |
78028da9 | 1660 | pci_release_region(pdev, 3); |
1ed0c0b7 | 1661 | errdec: |
9ac0948b | 1662 | board->base = 0; |
1ed0c0b7 | 1663 | card_count--; |
e1e5770b | 1664 | pci_disable_device(pdev); |
1ed0c0b7 | 1665 | err: |
9ac0948b JS |
1666 | return retval; |
1667 | } | |
1668 | ||
1669 | static void __devexit isicom_remove(struct pci_dev *pdev) | |
1670 | { | |
1671 | struct isi_board *board = pci_get_drvdata(pdev); | |
938a7023 JS |
1672 | unsigned int i; |
1673 | ||
1674 | for (i = 0; i < board->port_count; i++) | |
1675 | tty_unregister_device(isicom_normal, board->index * 16 + i); | |
9ac0948b JS |
1676 | |
1677 | free_irq(board->irq, board); | |
78028da9 | 1678 | pci_release_region(pdev, 3); |
1ed0c0b7 JS |
1679 | board->base = 0; |
1680 | card_count--; | |
e1e5770b | 1681 | pci_disable_device(pdev); |
9ac0948b | 1682 | } |
1da177e4 | 1683 | |
ca262005 | 1684 | static int __init isicom_init(void) |
1da177e4 | 1685 | { |
9ac0948b JS |
1686 | int retval, idx, channel; |
1687 | struct isi_port *port; | |
d8d16e47 | 1688 | |
251b8dd7 | 1689 | for (idx = 0; idx < BOARD_COUNT; idx++) { |
9ac0948b JS |
1690 | port = &isi_ports[idx * 16]; |
1691 | isi_card[idx].ports = port; | |
1692 | spin_lock_init(&isi_card[idx].card_lock); | |
1693 | for (channel = 0; channel < 16; channel++, port++) { | |
44b7d1b3 | 1694 | tty_port_init(&port->port); |
31f35939 | 1695 | port->port.ops = &isicom_port_ops; |
9ac0948b JS |
1696 | port->magic = ISICOM_MAGIC; |
1697 | port->card = &isi_card[idx]; | |
1698 | port->channel = channel; | |
44b7d1b3 AC |
1699 | port->port.close_delay = 50 * HZ/100; |
1700 | port->port.closing_wait = 3000 * HZ/100; | |
9ac0948b | 1701 | port->status = 0; |
9ac0948b | 1702 | /* . . . */ |
251b8dd7 | 1703 | } |
9ac0948b JS |
1704 | isi_card[idx].base = 0; |
1705 | isi_card[idx].irq = 0; | |
1da177e4 | 1706 | } |
d8d16e47 | 1707 | |
09a4a112 JS |
1708 | /* tty driver structure initialization */ |
1709 | isicom_normal = alloc_tty_driver(PORT_COUNT); | |
1710 | if (!isicom_normal) { | |
1711 | retval = -ENOMEM; | |
9ac0948b | 1712 | goto error; |
09a4a112 JS |
1713 | } |
1714 | ||
1715 | isicom_normal->owner = THIS_MODULE; | |
1716 | isicom_normal->name = "ttyM"; | |
1717 | isicom_normal->major = ISICOM_NMAJOR; | |
1718 | isicom_normal->minor_start = 0; | |
1719 | isicom_normal->type = TTY_DRIVER_TYPE_SERIAL; | |
1720 | isicom_normal->subtype = SERIAL_TYPE_NORMAL; | |
1721 | isicom_normal->init_termios = tty_std_termios; | |
1722 | isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | | |
1723 | CLOCAL; | |
938a7023 | 1724 | isicom_normal->flags = TTY_DRIVER_REAL_RAW | |
6d889724 | 1725 | TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK; |
09a4a112 JS |
1726 | tty_set_operations(isicom_normal, &isicom_ops); |
1727 | ||
1728 | retval = tty_register_driver(isicom_normal); | |
1729 | if (retval) { | |
1730 | pr_dbg("Couldn't register the dialin driver\n"); | |
1731 | goto err_puttty; | |
1732 | } | |
1da177e4 | 1733 | |
9ac0948b | 1734 | retval = pci_register_driver(&isicom_driver); |
1da177e4 | 1735 | if (retval < 0) { |
9ac0948b | 1736 | printk(KERN_ERR "ISICOM: Unable to register pci driver.\n"); |
09a4a112 | 1737 | goto err_unrtty; |
1da177e4 | 1738 | } |
d8d16e47 | 1739 | |
34b55b86 | 1740 | mod_timer(&tx, jiffies + 1); |
d8d16e47 | 1741 | |
1da177e4 | 1742 | return 0; |
09a4a112 JS |
1743 | err_unrtty: |
1744 | tty_unregister_driver(isicom_normal); | |
1745 | err_puttty: | |
1746 | put_tty_driver(isicom_normal); | |
9ac0948b JS |
1747 | error: |
1748 | return retval; | |
1da177e4 LT |
1749 | } |
1750 | ||
1751 | static void __exit isicom_exit(void) | |
1752 | { | |
e327325f | 1753 | del_timer_sync(&tx); |
aaa246ea | 1754 | |
9ac0948b | 1755 | pci_unregister_driver(&isicom_driver); |
09a4a112 JS |
1756 | tty_unregister_driver(isicom_normal); |
1757 | put_tty_driver(isicom_normal); | |
1da177e4 LT |
1758 | } |
1759 | ||
ca262005 | 1760 | module_init(isicom_init); |
1da177e4 | 1761 | module_exit(isicom_exit); |
aaa246ea JS |
1762 | |
1763 | MODULE_AUTHOR("MultiTech"); | |
1764 | MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech"); | |
1765 | MODULE_LICENSE("GPL"); |