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Commit | Line | Data |
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e3b3d0f5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
1da177e4 | 2 | /* |
1da177e4 LT |
3 | * Original driver code supplied by Multi-Tech |
4 | * | |
5 | * Changes | |
8eb04cf3 AC |
6 | * 1/9/98 alan@lxorguk.ukuu.org.uk |
7 | * Merge to 2.0.x kernel tree | |
1da177e4 LT |
8 | * Obtain and use official major/minors |
9 | * Loader switched to a misc device | |
10 | * (fixed range check bug as a side effect) | |
11 | * Printk clean up | |
8eb04cf3 AC |
12 | * 9/12/98 alan@lxorguk.ukuu.org.uk |
13 | * Rough port to 2.1.x | |
1da177e4 LT |
14 | * |
15 | * 10/6/99 sameer Merged the ISA and PCI drivers to | |
16 | * a new unified driver. | |
17 | * | |
18 | * 3/9/99 sameer Added support for ISI4616 cards. | |
19 | * | |
20 | * 16/9/99 sameer We do not force RTS low anymore. | |
d8d16e47 | 21 | * This is to prevent the firmware |
1da177e4 LT |
22 | * from getting confused. |
23 | * | |
24 | * 26/10/99 sameer Cosmetic changes:The driver now | |
25 | * dumps the Port Count information | |
26 | * along with I/O address and IRQ. | |
27 | * | |
28 | * 13/12/99 sameer Fixed the problem with IRQ sharing. | |
29 | * | |
30 | * 10/5/00 sameer Fixed isicom_shutdown_board() | |
31 | * to not lower DTR on all the ports | |
d8d16e47 | 32 | * when the last port on the card is |
1da177e4 LT |
33 | * closed. |
34 | * | |
35 | * 10/5/00 sameer Signal mask setup command added | |
d8d16e47 | 36 | * to isicom_setup_port and |
1da177e4 LT |
37 | * isicom_shutdown_port. |
38 | * | |
39 | * 24/5/00 sameer The driver is now SMP aware. | |
d8d16e47 JS |
40 | * |
41 | * | |
1da177e4 | 42 | * 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem |
d8d16e47 JS |
43 | * |
44 | * | |
1da177e4 LT |
45 | * 03/01/01 anil .s Added support for resetting the |
46 | * internal modems on ISI cards. | |
47 | * | |
48 | * 08/02/01 anil .s Upgraded the driver for kernel | |
49 | * 2.4.x | |
50 | * | |
d8d16e47 | 51 | * 11/04/01 Kevin Fixed firmware load problem with |
1da177e4 | 52 | * ISIHP-4X card |
d8d16e47 | 53 | * |
1da177e4 LT |
54 | * 30/04/01 anil .s Fixed the remote login through |
55 | * ISI port problem. Now the link | |
56 | * does not go down before password | |
57 | * prompt. | |
58 | * | |
59 | * 03/05/01 anil .s Fixed the problem with IRQ sharing | |
60 | * among ISI-PCI cards. | |
61 | * | |
62 | * 03/05/01 anil .s Added support to display the version | |
d8d16e47 | 63 | * info during insmod as well as module |
1da177e4 | 64 | * listing by lsmod. |
d8d16e47 | 65 | * |
1da177e4 LT |
66 | * 10/05/01 anil .s Done the modifications to the source |
67 | * file and Install script so that the | |
68 | * same installation can be used for | |
69 | * 2.2.x and 2.4.x kernel. | |
70 | * | |
71 | * 06/06/01 anil .s Now we drop both dtr and rts during | |
72 | * shutdown_port as well as raise them | |
73 | * during isicom_config_port. | |
d8d16e47 | 74 | * |
1da177e4 LT |
75 | * 09/06/01 acme@conectiva.com.br use capable, not suser, do |
76 | * restore_flags on failure in | |
77 | * isicom_send_break, verify put_user | |
78 | * result | |
79 | * | |
d8d16e47 JS |
80 | * 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps |
81 | * Baud index extended to 21 | |
82 | * | |
83 | * 20/03/03 ranjeeth Made to work for Linux Advanced server. | |
84 | * Taken care of license warning. | |
85 | * | |
86 | * 10/12/03 Ravindra Made to work for Fedora Core 1 of | |
1da177e4 LT |
87 | * Red Hat Distribution |
88 | * | |
89 | * 06/01/05 Alan Cox Merged the ISI and base kernel strands | |
90 | * into a single 2.6 driver | |
91 | * | |
92 | * *********************************************************** | |
93 | * | |
d8d16e47 | 94 | * To use this driver you also need the support package. You |
1da177e4 LT |
95 | * can find this in RPM format on |
96 | * ftp://ftp.linux.org.uk/pub/linux/alan | |
d8d16e47 | 97 | * |
1da177e4 LT |
98 | * You can find the original tools for this direct from Multitech |
99 | * ftp://ftp.multitech.com/ISI-Cards/ | |
100 | * | |
970e2486 | 101 | * Having installed the cards the module options (/etc/modprobe.d/) |
1da177e4 LT |
102 | * |
103 | * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4 | |
104 | * | |
105 | * Omit those entries for boards you don't have installed. | |
106 | * | |
107 | * TODO | |
1da177e4 LT |
108 | * Merge testing |
109 | * 64-bit verification | |
110 | */ | |
111 | ||
db91340b JP |
112 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
113 | ||
1da177e4 | 114 | #include <linux/module.h> |
e65c1db1 | 115 | #include <linux/firmware.h> |
1da177e4 LT |
116 | #include <linux/kernel.h> |
117 | #include <linux/tty.h> | |
33f0f88f | 118 | #include <linux/tty_flip.h> |
1da177e4 LT |
119 | #include <linux/termios.h> |
120 | #include <linux/fs.h> | |
121 | #include <linux/sched.h> | |
122 | #include <linux/serial.h> | |
123 | #include <linux/mm.h> | |
1da177e4 LT |
124 | #include <linux/interrupt.h> |
125 | #include <linux/timer.h> | |
126 | #include <linux/delay.h> | |
127 | #include <linux/ioport.h> | |
5a0e3ad6 | 128 | #include <linux/slab.h> |
1da177e4 | 129 | |
251b8dd7 AC |
130 | #include <linux/uaccess.h> |
131 | #include <linux/io.h> | |
1da177e4 LT |
132 | |
133 | #include <linux/pci.h> | |
134 | ||
135 | #include <linux/isicom.h> | |
136 | ||
aaa246ea JS |
137 | #define InterruptTheCard(base) outw(0, (base) + 0xc) |
138 | #define ClearInterrupt(base) inw((base) + 0x0a) | |
139 | ||
140 | #ifdef DEBUG | |
aaa246ea JS |
141 | #define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c)) |
142 | #else | |
aaa246ea JS |
143 | #define isicom_paranoia_check(a, b, c) 0 |
144 | #endif | |
145 | ||
9ac0948b | 146 | static int isicom_probe(struct pci_dev *, const struct pci_device_id *); |
ae8d8a14 | 147 | static void isicom_remove(struct pci_dev *); |
9ac0948b | 148 | |
763653d7 | 149 | static const struct pci_device_id isicom_pci_tbl[] = { |
9ac0948b JS |
150 | { PCI_DEVICE(VENDOR_ID, 0x2028) }, |
151 | { PCI_DEVICE(VENDOR_ID, 0x2051) }, | |
152 | { PCI_DEVICE(VENDOR_ID, 0x2052) }, | |
153 | { PCI_DEVICE(VENDOR_ID, 0x2053) }, | |
154 | { PCI_DEVICE(VENDOR_ID, 0x2054) }, | |
155 | { PCI_DEVICE(VENDOR_ID, 0x2055) }, | |
156 | { PCI_DEVICE(VENDOR_ID, 0x2056) }, | |
157 | { PCI_DEVICE(VENDOR_ID, 0x2057) }, | |
158 | { PCI_DEVICE(VENDOR_ID, 0x2058) }, | |
1da177e4 LT |
159 | { 0 } |
160 | }; | |
161 | MODULE_DEVICE_TABLE(pci, isicom_pci_tbl); | |
162 | ||
9ac0948b JS |
163 | static struct pci_driver isicom_driver = { |
164 | .name = "isicom", | |
165 | .id_table = isicom_pci_tbl, | |
166 | .probe = isicom_probe, | |
91116cba | 167 | .remove = isicom_remove |
9ac0948b JS |
168 | }; |
169 | ||
1da177e4 LT |
170 | static int prev_card = 3; /* start servicing isi_card[0] */ |
171 | static struct tty_driver *isicom_normal; | |
172 | ||
24ed960a | 173 | static void isicom_tx(struct timer_list *unused); |
d8d16e47 | 174 | static void isicom_start(struct tty_struct *tty); |
1da177e4 | 175 | |
1d27e3e2 | 176 | static DEFINE_TIMER(tx, isicom_tx); |
34b55b86 | 177 | |
1da177e4 LT |
178 | /* baud index mappings from linux defns to isi */ |
179 | ||
180 | static signed char linuxb_to_isib[] = { | |
7edc136a | 181 | -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19, 20, 21 |
1da177e4 LT |
182 | }; |
183 | ||
184 | struct isi_board { | |
8070e35c | 185 | unsigned long base; |
4969b3a4 | 186 | int irq; |
1da177e4 LT |
187 | unsigned char port_count; |
188 | unsigned short status; | |
a547dfe9 | 189 | unsigned short port_status; /* each bit for each port */ |
1da177e4 | 190 | unsigned short shift_count; |
251b8dd7 | 191 | struct isi_port *ports; |
1da177e4 | 192 | signed char count; |
1da177e4 LT |
193 | spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */ |
194 | unsigned long flags; | |
938a7023 | 195 | unsigned int index; |
1da177e4 LT |
196 | }; |
197 | ||
198 | struct isi_port { | |
199 | unsigned short magic; | |
f1d03228 | 200 | struct tty_port port; |
8070e35c JS |
201 | u16 channel; |
202 | u16 status; | |
251b8dd7 | 203 | struct isi_board *card; |
251b8dd7 | 204 | unsigned char *xmit_buf; |
1da177e4 LT |
205 | int xmit_head; |
206 | int xmit_tail; | |
207 | int xmit_cnt; | |
208 | }; | |
209 | ||
210 | static struct isi_board isi_card[BOARD_COUNT]; | |
211 | static struct isi_port isi_ports[PORT_COUNT]; | |
212 | ||
213 | /* | |
214 | * Locking functions for card level locking. We need to own both | |
215 | * the kernel lock for the card and have the card in a position that | |
216 | * it wants to talk. | |
217 | */ | |
d8d16e47 | 218 | |
810e20e7 | 219 | static int WaitTillCardIsFree(unsigned long base) |
cfe7c09a JS |
220 | { |
221 | unsigned int count = 0; | |
cfe7c09a JS |
222 | |
223 | while (!(inw(base + 0xe) & 0x1) && count++ < 100) | |
fe8e7ace | 224 | mdelay(1); |
cfe7c09a JS |
225 | |
226 | return !(inw(base + 0xe) & 0x1); | |
227 | } | |
228 | ||
1da177e4 LT |
229 | static int lock_card(struct isi_board *card) |
230 | { | |
8070e35c | 231 | unsigned long base = card->base; |
5b21f9dd | 232 | unsigned int retries, a; |
1da177e4 | 233 | |
5b21f9dd | 234 | for (retries = 0; retries < 10; retries++) { |
1da177e4 | 235 | spin_lock_irqsave(&card->card_lock, card->flags); |
5b21f9dd JS |
236 | for (a = 0; a < 10; a++) { |
237 | if (inw(base + 0xe) & 0x1) | |
238 | return 1; | |
239 | udelay(10); | |
1da177e4 | 240 | } |
5b21f9dd JS |
241 | spin_unlock_irqrestore(&card->card_lock, card->flags); |
242 | msleep(10); | |
1da177e4 | 243 | } |
e620e548 | 244 | pr_warn("Failed to lock Card (0x%lx)\n", card->base); |
a547dfe9 | 245 | |
0418726b | 246 | return 0; /* Failed to acquire the card! */ |
1da177e4 LT |
247 | } |
248 | ||
1da177e4 LT |
249 | static void unlock_card(struct isi_board *card) |
250 | { | |
251 | spin_unlock_irqrestore(&card->card_lock, card->flags); | |
252 | } | |
253 | ||
254 | /* | |
255 | * ISI Card specific ops ... | |
256 | */ | |
d8d16e47 | 257 | |
cfe7c09a | 258 | /* card->lock HAS to be held */ |
d8d16e47 | 259 | static void raise_dtr(struct isi_port *port) |
1da177e4 | 260 | { |
d8d16e47 | 261 | struct isi_board *card = port->card; |
8070e35c JS |
262 | unsigned long base = card->base; |
263 | u16 channel = port->channel; | |
1da177e4 | 264 | |
cfe7c09a | 265 | if (WaitTillCardIsFree(base)) |
1da177e4 LT |
266 | return; |
267 | ||
d8d16e47 | 268 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 LT |
269 | outw(0x0504, base); |
270 | InterruptTheCard(base); | |
271 | port->status |= ISI_DTR; | |
1da177e4 LT |
272 | } |
273 | ||
cfe7c09a | 274 | /* card->lock HAS to be held */ |
9428d712 | 275 | static void drop_dtr(struct isi_port *port) |
d8d16e47 JS |
276 | { |
277 | struct isi_board *card = port->card; | |
8070e35c JS |
278 | unsigned long base = card->base; |
279 | u16 channel = port->channel; | |
1da177e4 | 280 | |
cfe7c09a | 281 | if (WaitTillCardIsFree(base)) |
1da177e4 LT |
282 | return; |
283 | ||
d8d16e47 | 284 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 285 | outw(0x0404, base); |
d8d16e47 | 286 | InterruptTheCard(base); |
1da177e4 | 287 | port->status &= ~ISI_DTR; |
1da177e4 LT |
288 | } |
289 | ||
cfe7c09a | 290 | /* card->lock HAS to be held */ |
d8d16e47 | 291 | static inline void raise_rts(struct isi_port *port) |
1da177e4 | 292 | { |
d8d16e47 | 293 | struct isi_board *card = port->card; |
8070e35c JS |
294 | unsigned long base = card->base; |
295 | u16 channel = port->channel; | |
1da177e4 | 296 | |
cfe7c09a | 297 | if (WaitTillCardIsFree(base)) |
1da177e4 LT |
298 | return; |
299 | ||
d8d16e47 | 300 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 301 | outw(0x0a04, base); |
d8d16e47 | 302 | InterruptTheCard(base); |
1da177e4 | 303 | port->status |= ISI_RTS; |
1da177e4 | 304 | } |
cfe7c09a JS |
305 | |
306 | /* card->lock HAS to be held */ | |
d8d16e47 | 307 | static inline void drop_rts(struct isi_port *port) |
1da177e4 | 308 | { |
d8d16e47 | 309 | struct isi_board *card = port->card; |
8070e35c JS |
310 | unsigned long base = card->base; |
311 | u16 channel = port->channel; | |
1da177e4 | 312 | |
cfe7c09a | 313 | if (WaitTillCardIsFree(base)) |
1da177e4 LT |
314 | return; |
315 | ||
d8d16e47 | 316 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 317 | outw(0x0804, base); |
d8d16e47 | 318 | InterruptTheCard(base); |
1da177e4 | 319 | port->status &= ~ISI_RTS; |
1da177e4 LT |
320 | } |
321 | ||
cfe7c09a | 322 | /* card->lock MUST NOT be held */ |
5d951fb4 | 323 | |
fcc8ac18 | 324 | static void isicom_dtr_rts(struct tty_port *port, int on) |
1da177e4 | 325 | { |
5d951fb4 AC |
326 | struct isi_port *ip = container_of(port, struct isi_port, port); |
327 | struct isi_board *card = ip->card; | |
8070e35c | 328 | unsigned long base = card->base; |
5d951fb4 | 329 | u16 channel = ip->channel; |
1da177e4 LT |
330 | |
331 | if (!lock_card(card)) | |
332 | return; | |
333 | ||
fcc8ac18 AC |
334 | if (on) { |
335 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); | |
336 | outw(0x0f04, base); | |
337 | InterruptTheCard(base); | |
338 | ip->status |= (ISI_DTR | ISI_RTS); | |
339 | } else { | |
340 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); | |
341 | outw(0x0C04, base); | |
342 | InterruptTheCard(base); | |
343 | ip->status &= ~(ISI_DTR | ISI_RTS); | |
344 | } | |
1da177e4 LT |
345 | unlock_card(card); |
346 | } | |
347 | ||
cfe7c09a | 348 | /* card->lock HAS to be held */ |
d8d16e47 | 349 | static void drop_dtr_rts(struct isi_port *port) |
1da177e4 | 350 | { |
d8d16e47 | 351 | struct isi_board *card = port->card; |
8070e35c JS |
352 | unsigned long base = card->base; |
353 | u16 channel = port->channel; | |
1da177e4 | 354 | |
cfe7c09a | 355 | if (WaitTillCardIsFree(base)) |
1da177e4 LT |
356 | return; |
357 | ||
d8d16e47 | 358 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
1da177e4 | 359 | outw(0x0c04, base); |
d8d16e47 | 360 | InterruptTheCard(base); |
1da177e4 | 361 | port->status &= ~(ISI_RTS | ISI_DTR); |
1da177e4 LT |
362 | } |
363 | ||
1da177e4 LT |
364 | /* |
365 | * ISICOM Driver specific routines ... | |
366 | * | |
367 | */ | |
d8d16e47 | 368 | |
aaa246ea JS |
369 | static inline int __isicom_paranoia_check(struct isi_port const *port, |
370 | char *name, const char *routine) | |
1da177e4 | 371 | { |
1da177e4 | 372 | if (!port) { |
e620e548 JP |
373 | pr_warn("Warning: bad isicom magic for dev %s in %s\n", |
374 | name, routine); | |
1da177e4 LT |
375 | return 1; |
376 | } | |
377 | if (port->magic != ISICOM_MAGIC) { | |
e620e548 JP |
378 | pr_warn("Warning: NULL isicom port for dev %s in %s\n", |
379 | name, routine); | |
1da177e4 | 380 | return 1; |
d8d16e47 | 381 | } |
aaa246ea | 382 | |
1da177e4 LT |
383 | return 0; |
384 | } | |
d8d16e47 | 385 | |
1da177e4 | 386 | /* |
d8d16e47 | 387 | * Transmitter. |
1da177e4 LT |
388 | * |
389 | * We shovel data into the card buffers on a regular basis. The card | |
390 | * will do the rest of the work for us. | |
391 | */ | |
392 | ||
24ed960a | 393 | static void isicom_tx(struct timer_list *unused) |
1da177e4 | 394 | { |
4969b3a4 | 395 | unsigned long flags, base; |
5b21f9dd | 396 | unsigned int retries; |
4969b3a4 | 397 | short count = (BOARD_COUNT-1), card; |
1da177e4 | 398 | short txcount, wrd, residue, word_count, cnt; |
d8d16e47 JS |
399 | struct isi_port *port; |
400 | struct tty_struct *tty; | |
401 | ||
1da177e4 LT |
402 | /* find next active board */ |
403 | card = (prev_card + 1) & 0x0003; | |
251b8dd7 | 404 | while (count-- > 0) { |
d8d16e47 | 405 | if (isi_card[card].status & BOARD_ACTIVE) |
1da177e4 | 406 | break; |
d8d16e47 | 407 | card = (card + 1) & 0x0003; |
1da177e4 LT |
408 | } |
409 | if (!(isi_card[card].status & BOARD_ACTIVE)) | |
410 | goto sched_again; | |
d8d16e47 | 411 | |
1da177e4 | 412 | prev_card = card; |
d8d16e47 | 413 | |
1da177e4 LT |
414 | count = isi_card[card].port_count; |
415 | port = isi_card[card].ports; | |
416 | base = isi_card[card].base; | |
5b21f9dd JS |
417 | |
418 | spin_lock_irqsave(&isi_card[card].card_lock, flags); | |
419 | for (retries = 0; retries < 100; retries++) { | |
420 | if (inw(base + 0xe) & 0x1) | |
421 | break; | |
422 | udelay(2); | |
423 | } | |
424 | if (retries >= 100) | |
425 | goto unlock; | |
426 | ||
d450b5a0 AC |
427 | tty = tty_port_tty_get(&port->port); |
428 | if (tty == NULL) | |
429 | goto put_unlock; | |
430 | ||
251b8dd7 | 431 | for (; count > 0; count--, port++) { |
1da177e4 | 432 | /* port not active or tx disabled to force flow control */ |
d41861ca PH |
433 | if (!tty_port_initialized(&port->port) || |
434 | !(port->status & ISI_TXOK)) | |
1da177e4 | 435 | continue; |
d8d16e47 | 436 | |
1da177e4 | 437 | txcount = min_t(short, TX_SIZE, port->xmit_cnt); |
5b21f9dd | 438 | if (txcount <= 0 || tty->stopped || tty->hw_stopped) |
1da177e4 | 439 | continue; |
5b21f9dd JS |
440 | |
441 | if (!(inw(base + 0x02) & (1 << port->channel))) | |
d8d16e47 | 442 | continue; |
5b21f9dd | 443 | |
db91340b JP |
444 | pr_debug("txing %d bytes, port%d.\n", |
445 | txcount, port->channel + 1); | |
aaa246ea JS |
446 | outw((port->channel << isi_card[card].shift_count) | txcount, |
447 | base); | |
1da177e4 | 448 | residue = NO; |
d8d16e47 | 449 | wrd = 0; |
1da177e4 | 450 | while (1) { |
a547dfe9 JS |
451 | cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE |
452 | - port->xmit_tail)); | |
1da177e4 LT |
453 | if (residue == YES) { |
454 | residue = NO; | |
455 | if (cnt > 0) { | |
f1d03228 | 456 | wrd |= (port->port.xmit_buf[port->xmit_tail] |
a547dfe9 JS |
457 | << 8); |
458 | port->xmit_tail = (port->xmit_tail + 1) | |
459 | & (SERIAL_XMIT_SIZE - 1); | |
1da177e4 LT |
460 | port->xmit_cnt--; |
461 | txcount--; | |
462 | cnt--; | |
d8d16e47 | 463 | outw(wrd, base); |
a547dfe9 | 464 | } else { |
1da177e4 LT |
465 | outw(wrd, base); |
466 | break; | |
467 | } | |
d8d16e47 | 468 | } |
251b8dd7 AC |
469 | if (cnt <= 0) |
470 | break; | |
1da177e4 | 471 | word_count = cnt >> 1; |
f1d03228 | 472 | outsw(base, port->port.xmit_buf+port->xmit_tail, word_count); |
a547dfe9 JS |
473 | port->xmit_tail = (port->xmit_tail |
474 | + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1); | |
1da177e4 LT |
475 | txcount -= (word_count << 1); |
476 | port->xmit_cnt -= (word_count << 1); | |
477 | if (cnt & 0x0001) { | |
478 | residue = YES; | |
f1d03228 | 479 | wrd = port->port.xmit_buf[port->xmit_tail]; |
a547dfe9 JS |
480 | port->xmit_tail = (port->xmit_tail + 1) |
481 | & (SERIAL_XMIT_SIZE - 1); | |
1da177e4 LT |
482 | port->xmit_cnt--; |
483 | txcount--; | |
484 | } | |
485 | } | |
486 | ||
487 | InterruptTheCard(base); | |
488 | if (port->xmit_cnt <= 0) | |
489 | port->status &= ~ISI_TXOK; | |
490 | if (port->xmit_cnt <= WAKEUP_CHARS) | |
0aa5de85 | 491 | tty_wakeup(tty); |
d8d16e47 | 492 | } |
1da177e4 | 493 | |
d450b5a0 AC |
494 | put_unlock: |
495 | tty_kref_put(tty); | |
5b21f9dd JS |
496 | unlock: |
497 | spin_unlock_irqrestore(&isi_card[card].card_lock, flags); | |
d8d16e47 JS |
498 | /* schedule another tx for hopefully in about 10ms */ |
499 | sched_again: | |
34b55b86 | 500 | mod_timer(&tx, jiffies + msecs_to_jiffies(10)); |
d8d16e47 JS |
501 | } |
502 | ||
1da177e4 | 503 | /* |
d8d16e47 | 504 | * Main interrupt handler routine |
1da177e4 | 505 | */ |
d8d16e47 | 506 | |
7d12e780 | 507 | static irqreturn_t isicom_interrupt(int irq, void *dev_id) |
1da177e4 | 508 | { |
8070e35c | 509 | struct isi_board *card = dev_id; |
d8d16e47 JS |
510 | struct isi_port *port; |
511 | struct tty_struct *tty; | |
8070e35c JS |
512 | unsigned long base; |
513 | u16 header, word_count, count, channel; | |
1da177e4 | 514 | short byte_count; |
33f0f88f | 515 | unsigned char *rp; |
d8d16e47 | 516 | |
1da177e4 LT |
517 | if (!card || !(card->status & FIRMWARE_LOADED)) |
518 | return IRQ_NONE; | |
d8d16e47 | 519 | |
1da177e4 | 520 | base = card->base; |
cb4a10cc JS |
521 | |
522 | /* did the card interrupt us? */ | |
523 | if (!(inw(base + 0x0e) & 0x02)) | |
524 | return IRQ_NONE; | |
525 | ||
1da177e4 | 526 | spin_lock(&card->card_lock); |
d8d16e47 | 527 | |
18234f88 JS |
528 | /* |
529 | * disable any interrupts from the PCI card and lower the | |
530 | * interrupt line | |
531 | */ | |
532 | outw(0x8000, base+0x04); | |
533 | ClearInterrupt(base); | |
d8d16e47 | 534 | |
1da177e4 LT |
535 | inw(base); /* get the dummy word out */ |
536 | header = inw(base); | |
537 | channel = (header & 0x7800) >> card->shift_count; | |
538 | byte_count = header & 0xff; | |
539 | ||
540 | if (channel + 1 > card->port_count) { | |
e620e548 JP |
541 | pr_warn("%s(0x%lx): %d(channel) > port_count\n", |
542 | __func__, base, channel + 1); | |
18234f88 | 543 | outw(0x0000, base+0x04); /* enable interrupts */ |
1da177e4 | 544 | spin_unlock(&card->card_lock); |
d8d16e47 | 545 | return IRQ_HANDLED; |
1da177e4 LT |
546 | } |
547 | port = card->ports + channel; | |
d41861ca | 548 | if (!tty_port_initialized(&port->port)) { |
18234f88 | 549 | outw(0x0000, base+0x04); /* enable interrupts */ |
174f1307 | 550 | spin_unlock(&card->card_lock); |
1da177e4 | 551 | return IRQ_HANDLED; |
d8d16e47 JS |
552 | } |
553 | ||
d450b5a0 | 554 | tty = tty_port_tty_get(&port->port); |
1da177e4 LT |
555 | if (tty == NULL) { |
556 | word_count = byte_count >> 1; | |
251b8dd7 | 557 | while (byte_count > 1) { |
1da177e4 LT |
558 | inw(base); |
559 | byte_count -= 2; | |
560 | } | |
561 | if (byte_count & 0x01) | |
562 | inw(base); | |
18234f88 | 563 | outw(0x0000, base+0x04); /* enable interrupts */ |
1da177e4 LT |
564 | spin_unlock(&card->card_lock); |
565 | return IRQ_HANDLED; | |
566 | } | |
d8d16e47 | 567 | |
1da177e4 LT |
568 | if (header & 0x8000) { /* Status Packet */ |
569 | header = inw(base); | |
251b8dd7 | 570 | switch (header & 0xff) { |
d8d16e47 | 571 | case 0: /* Change in EIA signals */ |
2d68655d | 572 | if (tty_port_check_carrier(&port->port)) { |
d8d16e47 JS |
573 | if (port->status & ISI_DCD) { |
574 | if (!(header & ISI_DCD)) { | |
575 | /* Carrier has been lost */ | |
db91340b JP |
576 | pr_debug("%s: DCD->low.\n", |
577 | __func__); | |
d8d16e47 | 578 | port->status &= ~ISI_DCD; |
0aa5de85 | 579 | tty_hangup(tty); |
1da177e4 | 580 | } |
a547dfe9 JS |
581 | } else if (header & ISI_DCD) { |
582 | /* Carrier has been detected */ | |
db91340b JP |
583 | pr_debug("%s: DCD->high.\n", |
584 | __func__); | |
a547dfe9 | 585 | port->status |= ISI_DCD; |
f1d03228 | 586 | wake_up_interruptible(&port->port.open_wait); |
1da177e4 | 587 | } |
a547dfe9 | 588 | } else { |
d8d16e47 JS |
589 | if (header & ISI_DCD) |
590 | port->status |= ISI_DCD; | |
591 | else | |
592 | port->status &= ~ISI_DCD; | |
593 | } | |
594 | ||
f21ec3d2 | 595 | if (tty_port_cts_enabled(&port->port)) { |
d450b5a0 | 596 | if (tty->hw_stopped) { |
d8d16e47 | 597 | if (header & ISI_CTS) { |
7342c59a | 598 | tty->hw_stopped = 0; |
d8d16e47 | 599 | /* start tx ing */ |
a547dfe9 JS |
600 | port->status |= (ISI_TXOK |
601 | | ISI_CTS); | |
0aa5de85 | 602 | tty_wakeup(tty); |
1da177e4 | 603 | } |
a547dfe9 | 604 | } else if (!(header & ISI_CTS)) { |
d450b5a0 | 605 | tty->hw_stopped = 1; |
a547dfe9 JS |
606 | /* stop tx ing */ |
607 | port->status &= ~(ISI_TXOK | ISI_CTS); | |
1da177e4 | 608 | } |
a547dfe9 | 609 | } else { |
d8d16e47 JS |
610 | if (header & ISI_CTS) |
611 | port->status |= ISI_CTS; | |
1da177e4 | 612 | else |
d8d16e47 JS |
613 | port->status &= ~ISI_CTS; |
614 | } | |
615 | ||
616 | if (header & ISI_DSR) | |
617 | port->status |= ISI_DSR; | |
618 | else | |
619 | port->status &= ~ISI_DSR; | |
620 | ||
621 | if (header & ISI_RI) | |
622 | port->status |= ISI_RI; | |
623 | else | |
624 | port->status &= ~ISI_RI; | |
625 | ||
626 | break; | |
627 | ||
a547dfe9 | 628 | case 1: /* Received Break !!! */ |
92a19f9c | 629 | tty_insert_flip_char(&port->port, 0, TTY_BREAK); |
f1d03228 | 630 | if (port->port.flags & ASYNC_SAK) |
d8d16e47 | 631 | do_SAK(tty); |
2e124b4a | 632 | tty_flip_buffer_push(&port->port); |
d8d16e47 JS |
633 | break; |
634 | ||
635 | case 2: /* Statistics */ | |
db91340b | 636 | pr_debug("%s: stats!!!\n", __func__); |
d8d16e47 JS |
637 | break; |
638 | ||
639 | default: | |
db91340b JP |
640 | pr_debug("%s: Unknown code in status packet.\n", |
641 | __func__); | |
d8d16e47 JS |
642 | break; |
643 | } | |
a547dfe9 | 644 | } else { /* Data Packet */ |
2f693357 JS |
645 | count = tty_prepare_flip_string(&port->port, &rp, |
646 | byte_count & ~1); | |
db91340b JP |
647 | pr_debug("%s: Can rx %d of %d bytes.\n", |
648 | __func__, count, byte_count); | |
1da177e4 | 649 | word_count = count >> 1; |
33f0f88f | 650 | insw(base, rp, word_count); |
1da177e4 LT |
651 | byte_count -= (word_count << 1); |
652 | if (count & 0x0001) { | |
92a19f9c | 653 | tty_insert_flip_char(&port->port, inw(base) & 0xff, |
a547dfe9 | 654 | TTY_NORMAL); |
1da177e4 | 655 | byte_count -= 2; |
d8d16e47 | 656 | } |
1da177e4 | 657 | if (byte_count > 0) { |
db91340b JP |
658 | pr_debug("%s(0x%lx:%d): Flip buffer overflow! dropping bytes...\n", |
659 | __func__, base, channel + 1); | |
251b8dd7 AC |
660 | /* drain out unread xtra data */ |
661 | while (byte_count > 0) { | |
1da177e4 LT |
662 | inw(base); |
663 | byte_count -= 2; | |
664 | } | |
665 | } | |
2e124b4a | 666 | tty_flip_buffer_push(&port->port); |
1da177e4 | 667 | } |
18234f88 | 668 | outw(0x0000, base+0x04); /* enable interrupts */ |
174f1307 | 669 | spin_unlock(&card->card_lock); |
d450b5a0 | 670 | tty_kref_put(tty); |
a547dfe9 | 671 | |
1da177e4 | 672 | return IRQ_HANDLED; |
d8d16e47 | 673 | } |
1da177e4 | 674 | |
d450b5a0 | 675 | static void isicom_config_port(struct tty_struct *tty) |
1da177e4 | 676 | { |
d450b5a0 | 677 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 678 | struct isi_board *card = port->card; |
1da177e4 | 679 | unsigned long baud; |
8070e35c JS |
680 | unsigned long base = card->base; |
681 | u16 channel_setup, channel = port->channel, | |
682 | shift_count = card->shift_count; | |
1da177e4 | 683 | unsigned char flow_ctrl; |
d8d16e47 | 684 | |
251b8dd7 | 685 | /* FIXME: Switch to new tty baud API */ |
1da177e4 LT |
686 | baud = C_BAUD(tty); |
687 | if (baud & CBAUDEX) { | |
688 | baud &= ~CBAUDEX; | |
d8d16e47 | 689 | |
1da177e4 LT |
690 | /* if CBAUDEX bit is on and the baud is set to either 50 or 75 |
691 | * then the card is programmed for 57.6Kbps or 115Kbps | |
692 | * respectively. | |
d8d16e47 JS |
693 | */ |
694 | ||
7edc136a JS |
695 | /* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */ |
696 | if (baud < 1 || baud > 4) | |
adc8d746 | 697 | tty->termios.c_cflag &= ~CBAUDEX; |
1da177e4 LT |
698 | else |
699 | baud += 15; | |
d8d16e47 | 700 | } |
1da177e4 | 701 | if (baud == 15) { |
d8d16e47 JS |
702 | |
703 | /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set | |
1da177e4 LT |
704 | * by the set_serial_info ioctl ... this is done by |
705 | * the 'setserial' utility. | |
d8d16e47 JS |
706 | */ |
707 | ||
f1d03228 | 708 | if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
d8d16e47 | 709 | baud++; /* 57.6 Kbps */ |
f1d03228 | 710 | if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
251b8dd7 | 711 | baud += 2; /* 115 Kbps */ |
f1d03228 | 712 | if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) |
7edc136a | 713 | baud += 3; /* 230 kbps*/ |
f1d03228 | 714 | if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) |
7edc136a | 715 | baud += 4; /* 460 kbps*/ |
1da177e4 LT |
716 | } |
717 | if (linuxb_to_isib[baud] == -1) { | |
718 | /* hang up */ | |
d8d16e47 JS |
719 | drop_dtr(port); |
720 | return; | |
251b8dd7 | 721 | } else |
1da177e4 | 722 | raise_dtr(port); |
d8d16e47 | 723 | |
cfe7c09a | 724 | if (WaitTillCardIsFree(base) == 0) { |
251b8dd7 | 725 | outw(0x8000 | (channel << shift_count) | 0x03, base); |
1da177e4 LT |
726 | outw(linuxb_to_isib[baud] << 8 | 0x03, base); |
727 | channel_setup = 0; | |
251b8dd7 | 728 | switch (C_CSIZE(tty)) { |
d8d16e47 JS |
729 | case CS5: |
730 | channel_setup |= ISICOM_CS5; | |
731 | break; | |
732 | case CS6: | |
733 | channel_setup |= ISICOM_CS6; | |
734 | break; | |
735 | case CS7: | |
736 | channel_setup |= ISICOM_CS7; | |
737 | break; | |
738 | case CS8: | |
739 | channel_setup |= ISICOM_CS8; | |
740 | break; | |
1da177e4 | 741 | } |
d8d16e47 | 742 | |
1da177e4 LT |
743 | if (C_CSTOPB(tty)) |
744 | channel_setup |= ISICOM_2SB; | |
745 | if (C_PARENB(tty)) { | |
746 | channel_setup |= ISICOM_EVPAR; | |
747 | if (C_PARODD(tty)) | |
d8d16e47 | 748 | channel_setup |= ISICOM_ODPAR; |
1da177e4 | 749 | } |
d8d16e47 | 750 | outw(channel_setup, base); |
1da177e4 | 751 | InterruptTheCard(base); |
d8d16e47 | 752 | } |
2d68655d | 753 | tty_port_set_check_carrier(&port->port, !C_CLOCAL(tty)); |
d8d16e47 | 754 | |
1da177e4 LT |
755 | /* flow control settings ...*/ |
756 | flow_ctrl = 0; | |
5604a98e PH |
757 | tty_port_set_cts_flow(&port->port, C_CRTSCTS(tty)); |
758 | if (C_CRTSCTS(tty)) | |
1da177e4 | 759 | flow_ctrl |= ISICOM_CTSRTS; |
d8d16e47 | 760 | if (I_IXON(tty)) |
1da177e4 LT |
761 | flow_ctrl |= ISICOM_RESPOND_XONXOFF; |
762 | if (I_IXOFF(tty)) | |
d8d16e47 JS |
763 | flow_ctrl |= ISICOM_INITIATE_XONXOFF; |
764 | ||
cfe7c09a | 765 | if (WaitTillCardIsFree(base) == 0) { |
251b8dd7 | 766 | outw(0x8000 | (channel << shift_count) | 0x04, base); |
1da177e4 LT |
767 | outw(flow_ctrl << 8 | 0x05, base); |
768 | outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base); | |
769 | InterruptTheCard(base); | |
1da177e4 | 770 | } |
d8d16e47 | 771 | |
1da177e4 LT |
772 | /* rx enabled -> enable port for rx on the card */ |
773 | if (C_CREAD(tty)) { | |
774 | card->port_status |= (1 << channel); | |
775 | outw(card->port_status, base + 0x02); | |
776 | } | |
777 | } | |
1da177e4 | 778 | |
d8d16e47 JS |
779 | /* open et all */ |
780 | ||
781 | static inline void isicom_setup_board(struct isi_board *bp) | |
1da177e4 LT |
782 | { |
783 | int channel; | |
d8d16e47 | 784 | struct isi_port *port; |
d8d16e47 | 785 | |
baaa08ac | 786 | bp->count++; |
6ed847d8 AC |
787 | if (!(bp->status & BOARD_INIT)) { |
788 | port = bp->ports; | |
789 | for (channel = 0; channel < bp->port_count; channel++, port++) | |
790 | drop_dtr_rts(port); | |
791 | } | |
792 | bp->status |= BOARD_ACTIVE | BOARD_INIT; | |
1da177e4 | 793 | } |
d8d16e47 | 794 | |
6ed847d8 AC |
795 | /* Activate and thus setup board are protected from races against shutdown |
796 | by the tty_port mutex */ | |
797 | ||
baaa08ac | 798 | static int isicom_activate(struct tty_port *tport, struct tty_struct *tty) |
1da177e4 | 799 | { |
baaa08ac | 800 | struct isi_port *port = container_of(tport, struct isi_port, port); |
d8d16e47 | 801 | struct isi_board *card = port->card; |
1da177e4 | 802 | unsigned long flags; |
d8d16e47 | 803 | |
baaa08ac | 804 | if (tty_port_alloc_xmit_buf(tport) < 0) |
f1d03228 | 805 | return -ENOMEM; |
1da177e4 LT |
806 | |
807 | spin_lock_irqsave(&card->card_lock, flags); | |
baaa08ac | 808 | isicom_setup_board(card); |
d8d16e47 | 809 | |
1da177e4 | 810 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; |
d8d16e47 | 811 | |
1da177e4 | 812 | /* discard any residual data */ |
cfe7c09a JS |
813 | if (WaitTillCardIsFree(card->base) == 0) { |
814 | outw(0x8000 | (port->channel << card->shift_count) | 0x02, | |
815 | card->base); | |
816 | outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base); | |
817 | InterruptTheCard(card->base); | |
818 | } | |
d450b5a0 | 819 | isicom_config_port(tty); |
1da177e4 | 820 | spin_unlock_irqrestore(&card->card_lock, flags); |
d8d16e47 JS |
821 | |
822 | return 0; | |
823 | } | |
824 | ||
31f35939 AC |
825 | static int isicom_carrier_raised(struct tty_port *port) |
826 | { | |
827 | struct isi_port *ip = container_of(port, struct isi_port, port); | |
828 | return (ip->status & ISI_DCD)?1 : 0; | |
829 | } | |
830 | ||
11d85d7b | 831 | static struct tty_port *isicom_find_port(struct tty_struct *tty) |
1da177e4 | 832 | { |
d8d16e47 JS |
833 | struct isi_port *port; |
834 | struct isi_board *card; | |
17c4edf0 | 835 | unsigned int board; |
11d85d7b | 836 | int line = tty->index; |
1da177e4 | 837 | |
1da177e4 LT |
838 | board = BOARD(line); |
839 | card = &isi_card[board]; | |
d8d16e47 | 840 | |
1da177e4 | 841 | if (!(card->status & FIRMWARE_LOADED)) |
11d85d7b | 842 | return NULL; |
d8d16e47 | 843 | |
1da177e4 LT |
844 | /* open on a port greater than the port count for the card !!! */ |
845 | if (line > ((board * 16) + card->port_count - 1)) | |
11d85d7b | 846 | return NULL; |
1da177e4 | 847 | |
d8d16e47 | 848 | port = &isi_ports[line]; |
1da177e4 | 849 | if (isicom_paranoia_check(port, tty->name, "isicom_open")) |
11d85d7b AC |
850 | return NULL; |
851 | ||
852 | return &port->port; | |
853 | } | |
baaa08ac | 854 | |
11d85d7b AC |
855 | static int isicom_open(struct tty_struct *tty, struct file *filp) |
856 | { | |
857 | struct isi_port *port; | |
11d85d7b | 858 | struct tty_port *tport; |
d8d16e47 | 859 | |
11d85d7b AC |
860 | tport = isicom_find_port(tty); |
861 | if (tport == NULL) | |
862 | return -ENODEV; | |
863 | port = container_of(tport, struct isi_port, port); | |
d8d16e47 | 864 | |
a2d1e351 | 865 | tty->driver_data = port; |
baaa08ac | 866 | return tty_port_open(tport, tty, filp); |
1da177e4 | 867 | } |
d8d16e47 | 868 | |
1da177e4 LT |
869 | /* close et all */ |
870 | ||
cfe7c09a | 871 | /* card->lock HAS to be held */ |
d8d16e47 | 872 | static void isicom_shutdown_port(struct isi_port *port) |
1da177e4 | 873 | { |
d8d16e47 | 874 | struct isi_board *card = port->card; |
1da177e4 | 875 | |
1da177e4 | 876 | if (--card->count < 0) { |
db91340b JP |
877 | pr_debug("%s: bad board(0x%lx) count %d.\n", |
878 | __func__, card->base, card->count); | |
d8d16e47 | 879 | card->count = 0; |
1da177e4 | 880 | } |
baaa08ac | 881 | /* last port was closed, shutdown that board too */ |
6ed847d8 AC |
882 | if (!card->count) |
883 | card->status &= BOARD_ACTIVE; | |
1da177e4 LT |
884 | } |
885 | ||
978e595f AC |
886 | static void isicom_flush_buffer(struct tty_struct *tty) |
887 | { | |
888 | struct isi_port *port = tty->driver_data; | |
889 | struct isi_board *card = port->card; | |
890 | unsigned long flags; | |
891 | ||
892 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer")) | |
893 | return; | |
894 | ||
895 | spin_lock_irqsave(&card->card_lock, flags); | |
896 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; | |
897 | spin_unlock_irqrestore(&card->card_lock, flags); | |
898 | ||
899 | tty_wakeup(tty); | |
900 | } | |
901 | ||
baaa08ac | 902 | static void isicom_shutdown(struct tty_port *port) |
1da177e4 | 903 | { |
6f6412b4 AC |
904 | struct isi_port *ip = container_of(port, struct isi_port, port); |
905 | struct isi_board *card = ip->card; | |
1da177e4 | 906 | unsigned long flags; |
d8d16e47 | 907 | |
d8d16e47 | 908 | /* indicate to the card that no more data can be received |
1da177e4 LT |
909 | on this port */ |
910 | spin_lock_irqsave(&card->card_lock, flags); | |
baaa08ac AC |
911 | card->port_status &= ~(1 << ip->channel); |
912 | outw(card->port_status, card->base + 0x02); | |
a6614999 | 913 | isicom_shutdown_port(ip); |
1da177e4 | 914 | spin_unlock_irqrestore(&card->card_lock, flags); |
2493c0c1 | 915 | tty_port_free_xmit_buf(port); |
6f6412b4 | 916 | } |
d8d16e47 | 917 | |
6f6412b4 AC |
918 | static void isicom_close(struct tty_struct *tty, struct file *filp) |
919 | { | |
920 | struct isi_port *ip = tty->driver_data; | |
a2d1e351 AC |
921 | struct tty_port *port; |
922 | ||
923 | if (ip == NULL) | |
924 | return; | |
925 | ||
926 | port = &ip->port; | |
6f6412b4 AC |
927 | if (isicom_paranoia_check(ip, tty->name, "isicom_close")) |
928 | return; | |
baaa08ac | 929 | tty_port_close(port, tty, filp); |
1da177e4 LT |
930 | } |
931 | ||
932 | /* write et all */ | |
d8d16e47 JS |
933 | static int isicom_write(struct tty_struct *tty, const unsigned char *buf, |
934 | int count) | |
1da177e4 | 935 | { |
8070e35c | 936 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 937 | struct isi_board *card = port->card; |
1da177e4 LT |
938 | unsigned long flags; |
939 | int cnt, total = 0; | |
940 | ||
941 | if (isicom_paranoia_check(port, tty->name, "isicom_write")) | |
942 | return 0; | |
d8d16e47 | 943 | |
1da177e4 | 944 | spin_lock_irqsave(&card->card_lock, flags); |
d8d16e47 | 945 | |
251b8dd7 | 946 | while (1) { |
a547dfe9 JS |
947 | cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt |
948 | - 1, SERIAL_XMIT_SIZE - port->xmit_head)); | |
d8d16e47 | 949 | if (cnt <= 0) |
1da177e4 | 950 | break; |
d8d16e47 | 951 | |
f1d03228 | 952 | memcpy(port->port.xmit_buf + port->xmit_head, buf, cnt); |
a547dfe9 JS |
953 | port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE |
954 | - 1); | |
1da177e4 LT |
955 | port->xmit_cnt += cnt; |
956 | buf += cnt; | |
957 | count -= cnt; | |
958 | total += cnt; | |
d8d16e47 | 959 | } |
1da177e4 LT |
960 | if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
961 | port->status |= ISI_TXOK; | |
962 | spin_unlock_irqrestore(&card->card_lock, flags); | |
d8d16e47 | 963 | return total; |
1da177e4 LT |
964 | } |
965 | ||
966 | /* put_char et all */ | |
f34d7a5b | 967 | static int isicom_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 968 | { |
8070e35c | 969 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 970 | struct isi_board *card = port->card; |
1da177e4 | 971 | unsigned long flags; |
d8d16e47 | 972 | |
1da177e4 | 973 | if (isicom_paranoia_check(port, tty->name, "isicom_put_char")) |
f34d7a5b | 974 | return 0; |
d8d16e47 | 975 | |
1da177e4 | 976 | spin_lock_irqsave(&card->card_lock, flags); |
f34d7a5b AC |
977 | if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { |
978 | spin_unlock_irqrestore(&card->card_lock, flags); | |
979 | return 0; | |
980 | } | |
d8d16e47 | 981 | |
f1d03228 | 982 | port->port.xmit_buf[port->xmit_head++] = ch; |
1da177e4 LT |
983 | port->xmit_head &= (SERIAL_XMIT_SIZE - 1); |
984 | port->xmit_cnt++; | |
985 | spin_unlock_irqrestore(&card->card_lock, flags); | |
f34d7a5b | 986 | return 1; |
1da177e4 LT |
987 | } |
988 | ||
989 | /* flush_chars et all */ | |
d8d16e47 | 990 | static void isicom_flush_chars(struct tty_struct *tty) |
1da177e4 | 991 | { |
8070e35c | 992 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 993 | |
1da177e4 LT |
994 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars")) |
995 | return; | |
d8d16e47 | 996 | |
a547dfe9 | 997 | if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
f1d03228 | 998 | !port->port.xmit_buf) |
1da177e4 | 999 | return; |
d8d16e47 | 1000 | |
1da177e4 LT |
1001 | /* this tells the transmitter to consider this port for |
1002 | data output to the card ... that's the best we can do. */ | |
d8d16e47 | 1003 | port->status |= ISI_TXOK; |
1da177e4 LT |
1004 | } |
1005 | ||
1006 | /* write_room et all */ | |
d8d16e47 | 1007 | static int isicom_write_room(struct tty_struct *tty) |
1da177e4 | 1008 | { |
8070e35c | 1009 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1010 | int free; |
1011 | ||
1012 | if (isicom_paranoia_check(port, tty->name, "isicom_write_room")) | |
1013 | return 0; | |
d8d16e47 | 1014 | |
1da177e4 LT |
1015 | free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; |
1016 | if (free < 0) | |
1017 | free = 0; | |
1018 | return free; | |
1019 | } | |
1020 | ||
1021 | /* chars_in_buffer et all */ | |
d8d16e47 | 1022 | static int isicom_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1023 | { |
8070e35c | 1024 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1025 | if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer")) |
1026 | return 0; | |
1027 | return port->xmit_cnt; | |
1028 | } | |
1029 | ||
1030 | /* ioctl et all */ | |
6d889724 | 1031 | static int isicom_send_break(struct tty_struct *tty, int length) |
1da177e4 | 1032 | { |
6d889724 | 1033 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1034 | struct isi_board *card = port->card; |
8070e35c | 1035 | unsigned long base = card->base; |
d8d16e47 | 1036 | |
6d889724 AC |
1037 | if (length == -1) |
1038 | return -EOPNOTSUPP; | |
1039 | ||
d8d16e47 | 1040 | if (!lock_card(card)) |
6d889724 | 1041 | return -EINVAL; |
d8d16e47 | 1042 | |
1da177e4 LT |
1043 | outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base); |
1044 | outw((length & 0xff) << 8 | 0x00, base); | |
f3e2d56d | 1045 | outw((length & 0xff00u), base); |
1da177e4 LT |
1046 | InterruptTheCard(base); |
1047 | ||
1048 | unlock_card(card); | |
6d889724 | 1049 | return 0; |
1da177e4 LT |
1050 | } |
1051 | ||
60b33c13 | 1052 | static int isicom_tiocmget(struct tty_struct *tty) |
1da177e4 | 1053 | { |
8070e35c | 1054 | struct isi_port *port = tty->driver_data; |
1da177e4 | 1055 | /* just send the port status */ |
8070e35c | 1056 | u16 status = port->status; |
1da177e4 LT |
1057 | |
1058 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) | |
1059 | return -ENODEV; | |
d8d16e47 | 1060 | |
1da177e4 LT |
1061 | return ((status & ISI_RTS) ? TIOCM_RTS : 0) | |
1062 | ((status & ISI_DTR) ? TIOCM_DTR : 0) | | |
1063 | ((status & ISI_DCD) ? TIOCM_CAR : 0) | | |
1064 | ((status & ISI_DSR) ? TIOCM_DSR : 0) | | |
1065 | ((status & ISI_CTS) ? TIOCM_CTS : 0) | | |
1066 | ((status & ISI_RI ) ? TIOCM_RI : 0); | |
1067 | } | |
1068 | ||
20b9d177 AC |
1069 | static int isicom_tiocmset(struct tty_struct *tty, |
1070 | unsigned int set, unsigned int clear) | |
1da177e4 | 1071 | { |
8070e35c | 1072 | struct isi_port *port = tty->driver_data; |
cfe7c09a | 1073 | unsigned long flags; |
d8d16e47 | 1074 | |
1da177e4 LT |
1075 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
1076 | return -ENODEV; | |
d8d16e47 | 1077 | |
cfe7c09a | 1078 | spin_lock_irqsave(&port->card->card_lock, flags); |
1da177e4 LT |
1079 | if (set & TIOCM_RTS) |
1080 | raise_rts(port); | |
1081 | if (set & TIOCM_DTR) | |
1082 | raise_dtr(port); | |
1083 | ||
1084 | if (clear & TIOCM_RTS) | |
1085 | drop_rts(port); | |
1086 | if (clear & TIOCM_DTR) | |
1087 | drop_dtr(port); | |
cfe7c09a | 1088 | spin_unlock_irqrestore(&port->card->card_lock, flags); |
1da177e4 LT |
1089 | |
1090 | return 0; | |
d8d16e47 | 1091 | } |
1da177e4 | 1092 | |
d450b5a0 AC |
1093 | static int isicom_set_serial_info(struct tty_struct *tty, |
1094 | struct serial_struct __user *info) | |
1da177e4 | 1095 | { |
d450b5a0 | 1096 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1097 | struct serial_struct newinfo; |
1098 | int reconfig_port; | |
1099 | ||
d8d16e47 | 1100 | if (copy_from_user(&newinfo, info, sizeof(newinfo))) |
1da177e4 | 1101 | return -EFAULT; |
d8d16e47 | 1102 | |
ec82db12 | 1103 | mutex_lock(&port->port.mutex); |
f1d03228 | 1104 | reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) != |
d8d16e47 JS |
1105 | (newinfo.flags & ASYNC_SPD_MASK)); |
1106 | ||
1da177e4 | 1107 | if (!capable(CAP_SYS_ADMIN)) { |
44b7d1b3 AC |
1108 | if ((newinfo.close_delay != port->port.close_delay) || |
1109 | (newinfo.closing_wait != port->port.closing_wait) || | |
d8d16e47 | 1110 | ((newinfo.flags & ~ASYNC_USR_MASK) != |
f1d03228 | 1111 | (port->port.flags & ~ASYNC_USR_MASK))) { |
ec82db12 | 1112 | mutex_unlock(&port->port.mutex); |
1da177e4 | 1113 | return -EPERM; |
1eac4947 | 1114 | } |
f1d03228 | 1115 | port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) | |
1da177e4 | 1116 | (newinfo.flags & ASYNC_USR_MASK)); |
251b8dd7 | 1117 | } else { |
44b7d1b3 AC |
1118 | port->port.close_delay = newinfo.close_delay; |
1119 | port->port.closing_wait = newinfo.closing_wait; | |
f1d03228 | 1120 | port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) | |
1da177e4 LT |
1121 | (newinfo.flags & ASYNC_FLAGS)); |
1122 | } | |
1123 | if (reconfig_port) { | |
cfe7c09a JS |
1124 | unsigned long flags; |
1125 | spin_lock_irqsave(&port->card->card_lock, flags); | |
d450b5a0 | 1126 | isicom_config_port(tty); |
cfe7c09a | 1127 | spin_unlock_irqrestore(&port->card->card_lock, flags); |
1da177e4 | 1128 | } |
ec82db12 | 1129 | mutex_unlock(&port->port.mutex); |
d8d16e47 JS |
1130 | return 0; |
1131 | } | |
1da177e4 | 1132 | |
d8d16e47 JS |
1133 | static int isicom_get_serial_info(struct isi_port *port, |
1134 | struct serial_struct __user *info) | |
1da177e4 LT |
1135 | { |
1136 | struct serial_struct out_info; | |
d8d16e47 | 1137 | |
ec82db12 | 1138 | mutex_lock(&port->port.mutex); |
1da177e4 LT |
1139 | memset(&out_info, 0, sizeof(out_info)); |
1140 | /* out_info.type = ? */ | |
1141 | out_info.line = port - isi_ports; | |
1142 | out_info.port = port->card->base; | |
1143 | out_info.irq = port->card->irq; | |
f1d03228 | 1144 | out_info.flags = port->port.flags; |
1da177e4 | 1145 | /* out_info.baud_base = ? */ |
44b7d1b3 AC |
1146 | out_info.close_delay = port->port.close_delay; |
1147 | out_info.closing_wait = port->port.closing_wait; | |
ec82db12 | 1148 | mutex_unlock(&port->port.mutex); |
d8d16e47 | 1149 | if (copy_to_user(info, &out_info, sizeof(out_info))) |
1da177e4 LT |
1150 | return -EFAULT; |
1151 | return 0; | |
d8d16e47 | 1152 | } |
1da177e4 | 1153 | |
6caa76b7 | 1154 | static int isicom_ioctl(struct tty_struct *tty, |
d8d16e47 | 1155 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1156 | { |
8070e35c | 1157 | struct isi_port *port = tty->driver_data; |
1da177e4 | 1158 | void __user *argp = (void __user *)arg; |
1da177e4 LT |
1159 | |
1160 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) | |
1161 | return -ENODEV; | |
1162 | ||
251b8dd7 | 1163 | switch (cmd) { |
d8d16e47 JS |
1164 | case TIOCGSERIAL: |
1165 | return isicom_get_serial_info(port, argp); | |
1166 | ||
1167 | case TIOCSSERIAL: | |
d450b5a0 | 1168 | return isicom_set_serial_info(tty, argp); |
d8d16e47 JS |
1169 | |
1170 | default: | |
1171 | return -ENOIOCTLCMD; | |
1da177e4 LT |
1172 | } |
1173 | return 0; | |
1174 | } | |
1175 | ||
1176 | /* set_termios et all */ | |
d8d16e47 | 1177 | static void isicom_set_termios(struct tty_struct *tty, |
606d099c | 1178 | struct ktermios *old_termios) |
1da177e4 | 1179 | { |
8070e35c | 1180 | struct isi_port *port = tty->driver_data; |
cfe7c09a | 1181 | unsigned long flags; |
d8d16e47 | 1182 | |
1da177e4 LT |
1183 | if (isicom_paranoia_check(port, tty->name, "isicom_set_termios")) |
1184 | return; | |
d8d16e47 | 1185 | |
adc8d746 AC |
1186 | if (tty->termios.c_cflag == old_termios->c_cflag && |
1187 | tty->termios.c_iflag == old_termios->c_iflag) | |
1da177e4 | 1188 | return; |
d8d16e47 | 1189 | |
cfe7c09a | 1190 | spin_lock_irqsave(&port->card->card_lock, flags); |
d450b5a0 | 1191 | isicom_config_port(tty); |
cfe7c09a | 1192 | spin_unlock_irqrestore(&port->card->card_lock, flags); |
d8d16e47 | 1193 | |
9db276f8 | 1194 | if ((old_termios->c_cflag & CRTSCTS) && !C_CRTSCTS(tty)) { |
1da177e4 | 1195 | tty->hw_stopped = 0; |
d8d16e47 JS |
1196 | isicom_start(tty); |
1197 | } | |
1da177e4 LT |
1198 | } |
1199 | ||
1200 | /* throttle et all */ | |
d8d16e47 | 1201 | static void isicom_throttle(struct tty_struct *tty) |
1da177e4 | 1202 | { |
8070e35c | 1203 | struct isi_port *port = tty->driver_data; |
d8d16e47 JS |
1204 | struct isi_board *card = port->card; |
1205 | ||
1da177e4 LT |
1206 | if (isicom_paranoia_check(port, tty->name, "isicom_throttle")) |
1207 | return; | |
d8d16e47 | 1208 | |
1da177e4 LT |
1209 | /* tell the card that this port cannot handle any more data for now */ |
1210 | card->port_status &= ~(1 << port->channel); | |
1211 | outw(card->port_status, card->base + 0x02); | |
1212 | } | |
1213 | ||
1214 | /* unthrottle et all */ | |
d8d16e47 | 1215 | static void isicom_unthrottle(struct tty_struct *tty) |
1da177e4 | 1216 | { |
8070e35c | 1217 | struct isi_port *port = tty->driver_data; |
d8d16e47 JS |
1218 | struct isi_board *card = port->card; |
1219 | ||
1da177e4 LT |
1220 | if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle")) |
1221 | return; | |
d8d16e47 | 1222 | |
1da177e4 LT |
1223 | /* tell the card that this port is ready to accept more data */ |
1224 | card->port_status |= (1 << port->channel); | |
1225 | outw(card->port_status, card->base + 0x02); | |
1226 | } | |
1227 | ||
1228 | /* stop et all */ | |
d8d16e47 | 1229 | static void isicom_stop(struct tty_struct *tty) |
1da177e4 | 1230 | { |
8070e35c | 1231 | struct isi_port *port = tty->driver_data; |
1da177e4 LT |
1232 | |
1233 | if (isicom_paranoia_check(port, tty->name, "isicom_stop")) | |
1234 | return; | |
d8d16e47 | 1235 | |
1da177e4 LT |
1236 | /* this tells the transmitter not to consider this port for |
1237 | data output to the card. */ | |
1238 | port->status &= ~ISI_TXOK; | |
1239 | } | |
1240 | ||
1241 | /* start et all */ | |
d8d16e47 | 1242 | static void isicom_start(struct tty_struct *tty) |
1da177e4 | 1243 | { |
8070e35c | 1244 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1245 | |
1da177e4 LT |
1246 | if (isicom_paranoia_check(port, tty->name, "isicom_start")) |
1247 | return; | |
d8d16e47 | 1248 | |
1da177e4 LT |
1249 | /* this tells the transmitter to consider this port for |
1250 | data output to the card. */ | |
1251 | port->status |= ISI_TXOK; | |
1252 | } | |
1253 | ||
d8d16e47 | 1254 | static void isicom_hangup(struct tty_struct *tty) |
1da177e4 | 1255 | { |
8070e35c | 1256 | struct isi_port *port = tty->driver_data; |
d8d16e47 | 1257 | |
1da177e4 LT |
1258 | if (isicom_paranoia_check(port, tty->name, "isicom_hangup")) |
1259 | return; | |
3e61696b | 1260 | tty_port_hangup(&port->port); |
1da177e4 LT |
1261 | } |
1262 | ||
1da177e4 | 1263 | |
9ac0948b JS |
1264 | /* |
1265 | * Driver init and deinit functions | |
1266 | */ | |
1da177e4 | 1267 | |
b68e31d0 | 1268 | static const struct tty_operations isicom_ops = { |
d8d16e47 JS |
1269 | .open = isicom_open, |
1270 | .close = isicom_close, | |
1271 | .write = isicom_write, | |
1272 | .put_char = isicom_put_char, | |
1273 | .flush_chars = isicom_flush_chars, | |
1274 | .write_room = isicom_write_room, | |
1da177e4 | 1275 | .chars_in_buffer = isicom_chars_in_buffer, |
d8d16e47 JS |
1276 | .ioctl = isicom_ioctl, |
1277 | .set_termios = isicom_set_termios, | |
1278 | .throttle = isicom_throttle, | |
1279 | .unthrottle = isicom_unthrottle, | |
1280 | .stop = isicom_stop, | |
1281 | .start = isicom_start, | |
1282 | .hangup = isicom_hangup, | |
1283 | .flush_buffer = isicom_flush_buffer, | |
1284 | .tiocmget = isicom_tiocmget, | |
1285 | .tiocmset = isicom_tiocmset, | |
6d889724 | 1286 | .break_ctl = isicom_send_break, |
1da177e4 LT |
1287 | }; |
1288 | ||
31f35939 AC |
1289 | static const struct tty_port_operations isicom_port_ops = { |
1290 | .carrier_raised = isicom_carrier_raised, | |
fcc8ac18 | 1291 | .dtr_rts = isicom_dtr_rts, |
baaa08ac AC |
1292 | .activate = isicom_activate, |
1293 | .shutdown = isicom_shutdown, | |
31f35939 AC |
1294 | }; |
1295 | ||
9671f099 | 1296 | static int reset_card(struct pci_dev *pdev, |
9ac0948b | 1297 | const unsigned int card, unsigned int *signature) |
1da177e4 | 1298 | { |
9ac0948b JS |
1299 | struct isi_board *board = pci_get_drvdata(pdev); |
1300 | unsigned long base = board->base; | |
f0a0ba6d | 1301 | unsigned int sig, portcount = 0; |
9ac0948b | 1302 | int retval = 0; |
d8d16e47 | 1303 | |
9ac0948b JS |
1304 | dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1, |
1305 | base); | |
d8d16e47 | 1306 | |
9ac0948b | 1307 | inw(base + 0x8); |
d8d16e47 | 1308 | |
f0a0ba6d | 1309 | msleep(10); |
9ac0948b JS |
1310 | |
1311 | outw(0, base + 0x8); /* Reset */ | |
1312 | ||
f0a0ba6d | 1313 | msleep(1000); |
9ac0948b | 1314 | |
f0a0ba6d JS |
1315 | sig = inw(base + 0x4) & 0xff; |
1316 | ||
1317 | if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd && | |
1318 | sig != 0xee) { | |
1319 | dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible " | |
1320 | "bad I/O Port Address 0x%lx).\n", card + 1, base); | |
1321 | dev_dbg(&pdev->dev, "Sig=0x%x\n", sig); | |
1322 | retval = -EIO; | |
1323 | goto end; | |
1324 | } | |
1325 | ||
1326 | msleep(10); | |
9ac0948b | 1327 | |
18234f88 | 1328 | portcount = inw(base + 0x2); |
07fb6f26 | 1329 | if (!(inw(base + 0xe) & 0x1) || (portcount != 0 && portcount != 4 && |
f0a0ba6d | 1330 | portcount != 8 && portcount != 16)) { |
898eb71c | 1331 | dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.\n", |
f0a0ba6d | 1332 | card + 1); |
18234f88 JS |
1333 | retval = -EIO; |
1334 | goto end; | |
9ac0948b JS |
1335 | } |
1336 | ||
f0a0ba6d | 1337 | switch (sig) { |
9ac0948b JS |
1338 | case 0xa5: |
1339 | case 0xbb: | |
1340 | case 0xdd: | |
18234f88 | 1341 | board->port_count = (portcount == 4) ? 4 : 8; |
9ac0948b JS |
1342 | board->shift_count = 12; |
1343 | break; | |
1344 | case 0xcc: | |
f0a0ba6d | 1345 | case 0xee: |
9ac0948b JS |
1346 | board->port_count = 16; |
1347 | board->shift_count = 11; | |
1348 | break; | |
d8d16e47 | 1349 | } |
9ac0948b | 1350 | dev_info(&pdev->dev, "-Done\n"); |
f0a0ba6d | 1351 | *signature = sig; |
d8d16e47 | 1352 | |
9ac0948b JS |
1353 | end: |
1354 | return retval; | |
1da177e4 LT |
1355 | } |
1356 | ||
9671f099 | 1357 | static int load_firmware(struct pci_dev *pdev, |
e65c1db1 JS |
1358 | const unsigned int index, const unsigned int signature) |
1359 | { | |
1360 | struct isi_board *board = pci_get_drvdata(pdev); | |
1361 | const struct firmware *fw; | |
1362 | unsigned long base = board->base; | |
1363 | unsigned int a; | |
1364 | u16 word_count, status; | |
1365 | int retval = -EIO; | |
1366 | char *name; | |
1367 | u8 *data; | |
1368 | ||
1369 | struct stframe { | |
1370 | u16 addr; | |
1371 | u16 count; | |
1372 | u8 data[0]; | |
1373 | } *frame; | |
1374 | ||
1375 | switch (signature) { | |
1376 | case 0xa5: | |
1377 | name = "isi608.bin"; | |
1378 | break; | |
1379 | case 0xbb: | |
1380 | name = "isi608em.bin"; | |
1381 | break; | |
1382 | case 0xcc: | |
1383 | name = "isi616em.bin"; | |
1384 | break; | |
1385 | case 0xdd: | |
1386 | name = "isi4608.bin"; | |
1387 | break; | |
1388 | case 0xee: | |
1389 | name = "isi4616.bin"; | |
1390 | break; | |
1391 | default: | |
1392 | dev_err(&pdev->dev, "Unknown signature.\n"); | |
1393 | goto end; | |
251b8dd7 | 1394 | } |
e65c1db1 JS |
1395 | |
1396 | retval = request_firmware(&fw, name, &pdev->dev); | |
1397 | if (retval) | |
1398 | goto end; | |
1399 | ||
e4e04088 JS |
1400 | retval = -EIO; |
1401 | ||
e65c1db1 JS |
1402 | for (frame = (struct stframe *)fw->data; |
1403 | frame < (struct stframe *)(fw->data + fw->size); | |
e4e04088 JS |
1404 | frame = (struct stframe *)((u8 *)(frame + 1) + |
1405 | frame->count)) { | |
e65c1db1 JS |
1406 | if (WaitTillCardIsFree(base)) |
1407 | goto errrelfw; | |
1408 | ||
1409 | outw(0xf0, base); /* start upload sequence */ | |
1410 | outw(0x00, base); | |
1411 | outw(frame->addr, base); /* lsb of address */ | |
1412 | ||
1413 | word_count = frame->count / 2 + frame->count % 2; | |
1414 | outw(word_count, base); | |
1415 | InterruptTheCard(base); | |
1416 | ||
1417 | udelay(100); /* 0x2f */ | |
1418 | ||
1419 | if (WaitTillCardIsFree(base)) | |
1420 | goto errrelfw; | |
1421 | ||
251b8dd7 AC |
1422 | status = inw(base + 0x4); |
1423 | if (status != 0) { | |
e65c1db1 | 1424 | dev_warn(&pdev->dev, "Card%d rejected load header:\n" |
ad361c98 JP |
1425 | "Address:0x%x\n" |
1426 | "Count:0x%x\n" | |
1427 | "Status:0x%x\n", | |
1428 | index + 1, frame->addr, frame->count, status); | |
e65c1db1 JS |
1429 | goto errrelfw; |
1430 | } | |
1431 | outsw(base, frame->data, word_count); | |
1432 | ||
1433 | InterruptTheCard(base); | |
1434 | ||
1435 | udelay(50); /* 0x0f */ | |
1436 | ||
1437 | if (WaitTillCardIsFree(base)) | |
1438 | goto errrelfw; | |
1439 | ||
251b8dd7 AC |
1440 | status = inw(base + 0x4); |
1441 | if (status != 0) { | |
e65c1db1 JS |
1442 | dev_err(&pdev->dev, "Card%d got out of sync.Card " |
1443 | "Status:0x%x\n", index + 1, status); | |
1444 | goto errrelfw; | |
1445 | } | |
251b8dd7 | 1446 | } |
e65c1db1 | 1447 | |
e65c1db1 JS |
1448 | /* XXX: should we test it by reading it back and comparing with original like |
1449 | * in load firmware package? */ | |
e4e04088 JS |
1450 | for (frame = (struct stframe *)fw->data; |
1451 | frame < (struct stframe *)(fw->data + fw->size); | |
1452 | frame = (struct stframe *)((u8 *)(frame + 1) + | |
1453 | frame->count)) { | |
e65c1db1 JS |
1454 | if (WaitTillCardIsFree(base)) |
1455 | goto errrelfw; | |
1456 | ||
1457 | outw(0xf1, base); /* start download sequence */ | |
1458 | outw(0x00, base); | |
1459 | outw(frame->addr, base); /* lsb of address */ | |
1460 | ||
1461 | word_count = (frame->count >> 1) + frame->count % 2; | |
1462 | outw(word_count + 1, base); | |
1463 | InterruptTheCard(base); | |
1464 | ||
1465 | udelay(50); /* 0xf */ | |
1466 | ||
1467 | if (WaitTillCardIsFree(base)) | |
1468 | goto errrelfw; | |
1469 | ||
251b8dd7 AC |
1470 | status = inw(base + 0x4); |
1471 | if (status != 0) { | |
e65c1db1 | 1472 | dev_warn(&pdev->dev, "Card%d rejected verify header:\n" |
ad361c98 JP |
1473 | "Address:0x%x\n" |
1474 | "Count:0x%x\n" | |
1475 | "Status: 0x%x\n", | |
1476 | index + 1, frame->addr, frame->count, status); | |
e65c1db1 JS |
1477 | goto errrelfw; |
1478 | } | |
1479 | ||
6da2ec56 | 1480 | data = kmalloc_array(word_count, 2, GFP_KERNEL); |
f0671378 JS |
1481 | if (data == NULL) { |
1482 | dev_err(&pdev->dev, "Card%d, firmware upload " | |
1483 | "failed, not enough memory\n", index + 1); | |
1484 | goto errrelfw; | |
1485 | } | |
e65c1db1 JS |
1486 | inw(base); |
1487 | insw(base, data, word_count); | |
1488 | InterruptTheCard(base); | |
1489 | ||
1490 | for (a = 0; a < frame->count; a++) | |
1491 | if (data[a] != frame->data[a]) { | |
1492 | kfree(data); | |
1493 | dev_err(&pdev->dev, "Card%d, firmware upload " | |
1494 | "failed\n", index + 1); | |
1495 | goto errrelfw; | |
1496 | } | |
1497 | kfree(data); | |
1498 | ||
1499 | udelay(50); /* 0xf */ | |
1500 | ||
1501 | if (WaitTillCardIsFree(base)) | |
1502 | goto errrelfw; | |
1503 | ||
251b8dd7 AC |
1504 | status = inw(base + 0x4); |
1505 | if (status != 0) { | |
e65c1db1 JS |
1506 | dev_err(&pdev->dev, "Card%d verify got out of sync. " |
1507 | "Card Status:0x%x\n", index + 1, status); | |
1508 | goto errrelfw; | |
1509 | } | |
1510 | } | |
1511 | ||
e4e04088 JS |
1512 | /* xfer ctrl */ |
1513 | if (WaitTillCardIsFree(base)) | |
1514 | goto errrelfw; | |
1515 | ||
1516 | outw(0xf2, base); | |
1517 | outw(0x800, base); | |
1518 | outw(0x0, base); | |
1519 | outw(0x0, base); | |
1520 | InterruptTheCard(base); | |
1521 | outw(0x0, base + 0x4); /* for ISI4608 cards */ | |
1522 | ||
e65c1db1 JS |
1523 | board->status |= FIRMWARE_LOADED; |
1524 | retval = 0; | |
1525 | ||
1526 | errrelfw: | |
1527 | release_firmware(fw); | |
1528 | end: | |
1529 | return retval; | |
1530 | } | |
1531 | ||
1da177e4 LT |
1532 | /* |
1533 | * Insmod can set static symbols so keep these static | |
1534 | */ | |
1ed0c0b7 | 1535 | static unsigned int card_count; |
9ac0948b | 1536 | |
9671f099 | 1537 | static int isicom_probe(struct pci_dev *pdev, |
9ac0948b JS |
1538 | const struct pci_device_id *ent) |
1539 | { | |
9653a69e | 1540 | unsigned int uninitialized_var(signature), index; |
9ac0948b | 1541 | int retval = -EPERM; |
9ac0948b JS |
1542 | struct isi_board *board = NULL; |
1543 | ||
1ed0c0b7 | 1544 | if (card_count >= BOARD_COUNT) |
9ac0948b JS |
1545 | goto err; |
1546 | ||
e1e5770b JS |
1547 | retval = pci_enable_device(pdev); |
1548 | if (retval) { | |
1549 | dev_err(&pdev->dev, "failed to enable\n"); | |
1550 | goto err; | |
1551 | } | |
1552 | ||
9ac0948b JS |
1553 | dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device); |
1554 | ||
1555 | /* allot the first empty slot in the array */ | |
26e1e8d1 | 1556 | for (index = 0; index < BOARD_COUNT; index++) { |
9ac0948b JS |
1557 | if (isi_card[index].base == 0) { |
1558 | board = &isi_card[index]; | |
1559 | break; | |
1560 | } | |
26e1e8d1 DC |
1561 | } |
1562 | if (index == BOARD_COUNT) { | |
1563 | retval = -ENODEV; | |
1564 | goto err_disable; | |
1565 | } | |
9ac0948b | 1566 | |
938a7023 | 1567 | board->index = index; |
4969b3a4 JS |
1568 | board->base = pci_resource_start(pdev, 3); |
1569 | board->irq = pdev->irq; | |
1ed0c0b7 | 1570 | card_count++; |
9ac0948b JS |
1571 | |
1572 | pci_set_drvdata(pdev, board); | |
1573 | ||
78028da9 JS |
1574 | retval = pci_request_region(pdev, 3, ISICOM_NAME); |
1575 | if (retval) { | |
09a4a112 JS |
1576 | dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d " |
1577 | "will be disabled.\n", board->base, board->base + 15, | |
1578 | index + 1); | |
1579 | retval = -EBUSY; | |
1ed0c0b7 | 1580 | goto errdec; |
251b8dd7 | 1581 | } |
9ac0948b | 1582 | |
09a4a112 | 1583 | retval = request_irq(board->irq, isicom_interrupt, |
9cfb5c05 | 1584 | IRQF_SHARED, ISICOM_NAME, board); |
09a4a112 JS |
1585 | if (retval < 0) { |
1586 | dev_err(&pdev->dev, "Could not install handler at Irq %d. " | |
1587 | "Card%d will be disabled.\n", board->irq, index + 1); | |
9ac0948b | 1588 | goto errunrr; |
09a4a112 | 1589 | } |
9ac0948b JS |
1590 | |
1591 | retval = reset_card(pdev, index, &signature); | |
1592 | if (retval < 0) | |
1593 | goto errunri; | |
1594 | ||
e65c1db1 JS |
1595 | retval = load_firmware(pdev, index, signature); |
1596 | if (retval < 0) | |
1597 | goto errunri; | |
1598 | ||
d0f59141 JS |
1599 | for (index = 0; index < board->port_count; index++) { |
1600 | struct tty_port *tport = &board->ports[index].port; | |
1601 | tty_port_init(tport); | |
1602 | tport->ops = &isicom_port_ops; | |
1603 | tport->close_delay = 50 * HZ/100; | |
1604 | tport->closing_wait = 3000 * HZ/100; | |
1605 | tty_port_register_device(tport, isicom_normal, | |
1606 | board->index * 16 + index, &pdev->dev); | |
1607 | } | |
938a7023 | 1608 | |
9ac0948b JS |
1609 | return 0; |
1610 | ||
1611 | errunri: | |
1612 | free_irq(board->irq, board); | |
1613 | errunrr: | |
78028da9 | 1614 | pci_release_region(pdev, 3); |
1ed0c0b7 | 1615 | errdec: |
9ac0948b | 1616 | board->base = 0; |
1ed0c0b7 | 1617 | card_count--; |
26e1e8d1 | 1618 | err_disable: |
e1e5770b | 1619 | pci_disable_device(pdev); |
1ed0c0b7 | 1620 | err: |
9ac0948b JS |
1621 | return retval; |
1622 | } | |
1623 | ||
ae8d8a14 | 1624 | static void isicom_remove(struct pci_dev *pdev) |
9ac0948b JS |
1625 | { |
1626 | struct isi_board *board = pci_get_drvdata(pdev); | |
938a7023 JS |
1627 | unsigned int i; |
1628 | ||
d0f59141 | 1629 | for (i = 0; i < board->port_count; i++) { |
938a7023 | 1630 | tty_unregister_device(isicom_normal, board->index * 16 + i); |
d0f59141 JS |
1631 | tty_port_destroy(&board->ports[i].port); |
1632 | } | |
9ac0948b JS |
1633 | |
1634 | free_irq(board->irq, board); | |
78028da9 | 1635 | pci_release_region(pdev, 3); |
1ed0c0b7 JS |
1636 | board->base = 0; |
1637 | card_count--; | |
e1e5770b | 1638 | pci_disable_device(pdev); |
9ac0948b | 1639 | } |
1da177e4 | 1640 | |
ca262005 | 1641 | static int __init isicom_init(void) |
1da177e4 | 1642 | { |
9ac0948b JS |
1643 | int retval, idx, channel; |
1644 | struct isi_port *port; | |
d8d16e47 | 1645 | |
251b8dd7 | 1646 | for (idx = 0; idx < BOARD_COUNT; idx++) { |
9ac0948b JS |
1647 | port = &isi_ports[idx * 16]; |
1648 | isi_card[idx].ports = port; | |
1649 | spin_lock_init(&isi_card[idx].card_lock); | |
1650 | for (channel = 0; channel < 16; channel++, port++) { | |
1651 | port->magic = ISICOM_MAGIC; | |
1652 | port->card = &isi_card[idx]; | |
1653 | port->channel = channel; | |
9ac0948b | 1654 | port->status = 0; |
9ac0948b | 1655 | /* . . . */ |
251b8dd7 | 1656 | } |
9ac0948b JS |
1657 | isi_card[idx].base = 0; |
1658 | isi_card[idx].irq = 0; | |
1da177e4 | 1659 | } |
d8d16e47 | 1660 | |
09a4a112 JS |
1661 | /* tty driver structure initialization */ |
1662 | isicom_normal = alloc_tty_driver(PORT_COUNT); | |
1663 | if (!isicom_normal) { | |
1664 | retval = -ENOMEM; | |
9ac0948b | 1665 | goto error; |
09a4a112 JS |
1666 | } |
1667 | ||
09a4a112 JS |
1668 | isicom_normal->name = "ttyM"; |
1669 | isicom_normal->major = ISICOM_NMAJOR; | |
1670 | isicom_normal->minor_start = 0; | |
1671 | isicom_normal->type = TTY_DRIVER_TYPE_SERIAL; | |
1672 | isicom_normal->subtype = SERIAL_TYPE_NORMAL; | |
1673 | isicom_normal->init_termios = tty_std_termios; | |
1674 | isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | | |
1675 | CLOCAL; | |
938a7023 | 1676 | isicom_normal->flags = TTY_DRIVER_REAL_RAW | |
6d889724 | 1677 | TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK; |
09a4a112 JS |
1678 | tty_set_operations(isicom_normal, &isicom_ops); |
1679 | ||
1680 | retval = tty_register_driver(isicom_normal); | |
1681 | if (retval) { | |
db91340b | 1682 | pr_debug("Couldn't register the dialin driver\n"); |
09a4a112 JS |
1683 | goto err_puttty; |
1684 | } | |
1da177e4 | 1685 | |
9ac0948b | 1686 | retval = pci_register_driver(&isicom_driver); |
1da177e4 | 1687 | if (retval < 0) { |
db91340b | 1688 | pr_err("Unable to register pci driver.\n"); |
09a4a112 | 1689 | goto err_unrtty; |
1da177e4 | 1690 | } |
d8d16e47 | 1691 | |
34b55b86 | 1692 | mod_timer(&tx, jiffies + 1); |
d8d16e47 | 1693 | |
1da177e4 | 1694 | return 0; |
09a4a112 JS |
1695 | err_unrtty: |
1696 | tty_unregister_driver(isicom_normal); | |
1697 | err_puttty: | |
1698 | put_tty_driver(isicom_normal); | |
9ac0948b JS |
1699 | error: |
1700 | return retval; | |
1da177e4 LT |
1701 | } |
1702 | ||
1703 | static void __exit isicom_exit(void) | |
1704 | { | |
e327325f | 1705 | del_timer_sync(&tx); |
aaa246ea | 1706 | |
9ac0948b | 1707 | pci_unregister_driver(&isicom_driver); |
09a4a112 JS |
1708 | tty_unregister_driver(isicom_normal); |
1709 | put_tty_driver(isicom_normal); | |
1da177e4 LT |
1710 | } |
1711 | ||
ca262005 | 1712 | module_init(isicom_init); |
1da177e4 | 1713 | module_exit(isicom_exit); |
aaa246ea JS |
1714 | |
1715 | MODULE_AUTHOR("MultiTech"); | |
1716 | MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech"); | |
1717 | MODULE_LICENSE("GPL"); | |
e6c4ef98 BH |
1718 | MODULE_FIRMWARE("isi608.bin"); |
1719 | MODULE_FIRMWARE("isi608em.bin"); | |
1720 | MODULE_FIRMWARE("isi616em.bin"); | |
1721 | MODULE_FIRMWARE("isi4608.bin"); | |
1722 | MODULE_FIRMWARE("isi4616.bin"); |