Commit | Line | Data |
---|---|---|
0b99d589 LL |
1 | /* |
2 | * Copyright 2003 Digi International (www.digi.com) | |
3 | * Scott H Kilau <Scott_Kilau at digi dot com> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2, or (at your option) | |
8 | * any later version. | |
817b7847 | 9 | * |
0b99d589 | 10 | * This program is distributed in the hope that it will be useful, |
817b7847 LL |
11 | * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the |
12 | * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR | |
0b99d589 | 13 | * PURPOSE. See the GNU General Public License for more details. |
0b99d589 LL |
14 | */ |
15 | ||
16 | ||
17 | #include <linux/kernel.h> | |
0b99d589 LL |
18 | #include <linux/module.h> |
19 | #include <linux/pci.h> | |
68a5a5f3 | 20 | #include <linux/slab.h> |
0b99d589 | 21 | #include <linux/sched.h> |
0b99d589 LL |
22 | #include "dgnc_driver.h" |
23 | #include "dgnc_pci.h" | |
0b99d589 LL |
24 | #include "dgnc_mgmt.h" |
25 | #include "dgnc_tty.h" | |
0b99d589 LL |
26 | #include "dgnc_cls.h" |
27 | #include "dgnc_neo.h" | |
28 | #include "dgnc_sysfs.h" | |
29 | ||
30 | MODULE_LICENSE("GPL"); | |
31 | MODULE_AUTHOR("Digi International, http://www.digi.com"); | |
32 | MODULE_DESCRIPTION("Driver for the Digi International Neo and Classic PCI based product line"); | |
33 | MODULE_SUPPORTED_DEVICE("dgnc"); | |
34 | ||
0b99d589 LL |
35 | /************************************************************************** |
36 | * | |
37 | * protos for this file | |
38 | * | |
39 | */ | |
40 | static int dgnc_start(void); | |
03425f55 | 41 | static int dgnc_finalize_board_init(struct dgnc_board *brd); |
0b99d589 LL |
42 | static void dgnc_init_globals(void); |
43 | static int dgnc_found_board(struct pci_dev *pdev, int id); | |
03425f55 | 44 | static void dgnc_cleanup_board(struct dgnc_board *brd); |
0b99d589 | 45 | static void dgnc_poll_handler(ulong dummy); |
65da04c1 GS |
46 | static int dgnc_init_one(struct pci_dev *pdev, |
47 | const struct pci_device_id *ent); | |
03425f55 | 48 | static void dgnc_do_remap(struct dgnc_board *brd); |
0b99d589 | 49 | |
0b99d589 LL |
50 | /* |
51 | * File operations permitted on Control/Management major. | |
52 | */ | |
78adbb28 | 53 | static const struct file_operations dgnc_BoardFops = { |
0b99d589 | 54 | .owner = THIS_MODULE, |
338fd80f | 55 | .unlocked_ioctl = dgnc_mgmt_ioctl, |
0b99d589 LL |
56 | .open = dgnc_mgmt_open, |
57 | .release = dgnc_mgmt_close | |
58 | }; | |
59 | ||
60 | ||
61 | /* | |
62 | * Globals | |
63 | */ | |
64 | uint dgnc_NumBoards; | |
03425f55 | 65 | struct dgnc_board *dgnc_Board[MAXBOARDS]; |
0b99d589 | 66 | DEFINE_SPINLOCK(dgnc_global_lock); |
0b99d589 LL |
67 | uint dgnc_Major; |
68 | int dgnc_poll_tick = 20; /* Poll interval - 20 ms */ | |
69 | ||
70 | /* | |
71 | * Static vars. | |
72 | */ | |
0b99d589 LL |
73 | static struct class *dgnc_class; |
74 | ||
75 | /* | |
76 | * Poller stuff | |
77 | */ | |
338fd80f | 78 | static DEFINE_SPINLOCK(dgnc_poll_lock); /* Poll scheduling lock */ |
65da04c1 GS |
79 | static ulong dgnc_poll_time; /* Time of next poll */ |
80 | static uint dgnc_poll_stop; /* Used to tell poller to stop */ | |
0b99d589 LL |
81 | static struct timer_list dgnc_poll_timer; |
82 | ||
83 | ||
60e27886 KA |
84 | static const struct pci_device_id dgnc_pci_tbl[] = { |
85 | {PCI_DEVICE(DIGI_VID, PCI_DEVICE_CLASSIC_4_DID), .driver_data = 0}, | |
86 | {PCI_DEVICE(DIGI_VID, PCI_DEVICE_CLASSIC_4_422_DID), .driver_data = 1}, | |
87 | {PCI_DEVICE(DIGI_VID, PCI_DEVICE_CLASSIC_8_DID), .driver_data = 2}, | |
88 | {PCI_DEVICE(DIGI_VID, PCI_DEVICE_CLASSIC_8_422_DID), .driver_data = 3}, | |
89 | {0,} | |
0b99d589 LL |
90 | }; |
91 | MODULE_DEVICE_TABLE(pci, dgnc_pci_tbl); | |
92 | ||
93 | struct board_id { | |
446393e9 | 94 | unsigned char *name; |
0b99d589 LL |
95 | uint maxports; |
96 | unsigned int is_pci_express; | |
97 | }; | |
98 | ||
3f288962 | 99 | static struct board_id dgnc_Ids[] = { |
0b99d589 LL |
100 | { PCI_DEVICE_CLASSIC_4_PCI_NAME, 4, 0 }, |
101 | { PCI_DEVICE_CLASSIC_4_422_PCI_NAME, 4, 0 }, | |
102 | { PCI_DEVICE_CLASSIC_8_PCI_NAME, 8, 0 }, | |
103 | { PCI_DEVICE_CLASSIC_8_422_PCI_NAME, 8, 0 }, | |
104 | { PCI_DEVICE_NEO_4_PCI_NAME, 4, 0 }, | |
105 | { PCI_DEVICE_NEO_8_PCI_NAME, 8, 0 }, | |
106 | { PCI_DEVICE_NEO_2DB9_PCI_NAME, 2, 0 }, | |
107 | { PCI_DEVICE_NEO_2DB9PRI_PCI_NAME, 2, 0 }, | |
108 | { PCI_DEVICE_NEO_2RJ45_PCI_NAME, 2, 0 }, | |
109 | { PCI_DEVICE_NEO_2RJ45PRI_PCI_NAME, 2, 0 }, | |
110 | { PCI_DEVICE_NEO_1_422_PCI_NAME, 1, 0 }, | |
111 | { PCI_DEVICE_NEO_1_422_485_PCI_NAME, 1, 0 }, | |
112 | { PCI_DEVICE_NEO_2_422_485_PCI_NAME, 2, 0 }, | |
113 | { PCI_DEVICE_NEO_EXPRESS_8_PCI_NAME, 8, 1 }, | |
114 | { PCI_DEVICE_NEO_EXPRESS_4_PCI_NAME, 4, 1 }, | |
115 | { PCI_DEVICE_NEO_EXPRESS_4RJ45_PCI_NAME, 4, 1 }, | |
116 | { PCI_DEVICE_NEO_EXPRESS_8RJ45_PCI_NAME, 8, 1 }, | |
117 | { NULL, 0, 0 } | |
118 | }; | |
119 | ||
120 | static struct pci_driver dgnc_driver = { | |
121 | .name = "dgnc", | |
122 | .probe = dgnc_init_one, | |
123 | .id_table = dgnc_pci_tbl, | |
0b99d589 LL |
124 | }; |
125 | ||
0b99d589 LL |
126 | /************************************************************************ |
127 | * | |
128 | * Driver load/unload functions | |
129 | * | |
130 | ************************************************************************/ | |
131 | ||
1e881002 KZ |
132 | /* |
133 | * dgnc_cleanup_module() | |
134 | * | |
135 | * Module unload. This is where it all ends. | |
136 | */ | |
137 | static void dgnc_cleanup_module(void) | |
138 | { | |
139 | int i; | |
66663dc1 | 140 | unsigned long flags; |
1e881002 | 141 | |
66663dc1 | 142 | spin_lock_irqsave(&dgnc_poll_lock, flags); |
1e881002 | 143 | dgnc_poll_stop = 1; |
66663dc1 | 144 | spin_unlock_irqrestore(&dgnc_poll_lock, flags); |
1e881002 KZ |
145 | |
146 | /* Turn off poller right away. */ | |
147 | del_timer_sync(&dgnc_poll_timer); | |
148 | ||
149 | dgnc_remove_driver_sysfiles(&dgnc_driver); | |
150 | ||
ed7f92da KZ |
151 | device_destroy(dgnc_class, MKDEV(dgnc_Major, 0)); |
152 | class_destroy(dgnc_class); | |
153 | unregister_chrdev(dgnc_Major, "dgnc"); | |
1e881002 KZ |
154 | |
155 | for (i = 0; i < dgnc_NumBoards; ++i) { | |
156 | dgnc_remove_ports_sysfiles(dgnc_Board[i]); | |
157 | dgnc_tty_uninit(dgnc_Board[i]); | |
158 | dgnc_cleanup_board(dgnc_Board[i]); | |
159 | } | |
160 | ||
161 | dgnc_tty_post_uninit(); | |
162 | ||
163 | if (dgnc_NumBoards) | |
164 | pci_unregister_driver(&dgnc_driver); | |
165 | } | |
0b99d589 LL |
166 | |
167 | /* | |
168 | * init_module() | |
169 | * | |
170 | * Module load. This is where it all starts. | |
171 | */ | |
1e881002 | 172 | static int __init dgnc_init_module(void) |
0b99d589 LL |
173 | { |
174 | int rc = 0; | |
175 | ||
0b99d589 LL |
176 | /* |
177 | * Initialize global stuff | |
178 | */ | |
179 | rc = dgnc_start(); | |
180 | ||
3f288962 | 181 | if (rc < 0) |
8f90ef80 | 182 | return rc; |
0b99d589 LL |
183 | |
184 | /* | |
185 | * Find and configure all the cards | |
186 | */ | |
bbecbacb | 187 | rc = pci_register_driver(&dgnc_driver); |
0b99d589 LL |
188 | |
189 | /* | |
190 | * If something went wrong in the scan, bail out of driver. | |
191 | */ | |
192 | if (rc < 0) { | |
65da04c1 | 193 | /* Only unregister if it was actually registered. */ |
0b99d589 LL |
194 | if (dgnc_NumBoards) |
195 | pci_unregister_driver(&dgnc_driver); | |
196 | else | |
cf92c9cc | 197 | pr_warn("WARNING: dgnc driver load failed. No Digi Neo or Classic boards found.\n"); |
0b99d589 LL |
198 | |
199 | dgnc_cleanup_module(); | |
3f288962 | 200 | } else { |
0b99d589 LL |
201 | dgnc_create_driver_sysfiles(&dgnc_driver); |
202 | } | |
203 | ||
8f90ef80 | 204 | return rc; |
0b99d589 LL |
205 | } |
206 | ||
1e881002 KZ |
207 | module_init(dgnc_init_module); |
208 | module_exit(dgnc_cleanup_module); | |
0b99d589 LL |
209 | |
210 | /* | |
211 | * Start of driver. | |
212 | */ | |
213 | static int dgnc_start(void) | |
214 | { | |
215 | int rc = 0; | |
216 | unsigned long flags; | |
d7312aab | 217 | struct device *dev; |
0b99d589 | 218 | |
92ded48c KZ |
219 | /* make sure that the globals are init'd before we do anything else */ |
220 | dgnc_init_globals(); | |
0b99d589 | 221 | |
92ded48c KZ |
222 | /* |
223 | * Register our base character device into the kernel. | |
224 | * This allows the download daemon to connect to the downld device | |
225 | * before any of the boards are init'ed. | |
ed7f92da KZ |
226 | * |
227 | * Register management/dpa devices | |
92ded48c | 228 | */ |
ed7f92da | 229 | rc = register_chrdev(0, "dgnc", &dgnc_BoardFops); |
5f9dca1e | 230 | if (rc < 0) { |
1f26adc9 | 231 | pr_err(DRVSTR ": Can't register dgnc driver device (%d)\n", rc); |
5f9dca1e | 232 | return rc; |
92ded48c | 233 | } |
ed7f92da KZ |
234 | dgnc_Major = rc; |
235 | ||
236 | dgnc_class = class_create(THIS_MODULE, "dgnc_mgmt"); | |
d7312aab AK |
237 | if (IS_ERR(dgnc_class)) { |
238 | rc = PTR_ERR(dgnc_class); | |
239 | pr_err(DRVSTR ": Can't create dgnc_mgmt class (%d)\n", rc); | |
240 | goto failed_class; | |
241 | } | |
242 | ||
243 | dev = device_create(dgnc_class, NULL, | |
244 | MKDEV(dgnc_Major, 0), | |
245 | NULL, "dgnc_mgmt"); | |
246 | if (IS_ERR(dev)) { | |
247 | rc = PTR_ERR(dev); | |
248 | pr_err(DRVSTR ": Can't create device (%d)\n", rc); | |
249 | goto failed_device; | |
250 | } | |
0b99d589 | 251 | |
92ded48c KZ |
252 | /* |
253 | * Init any global tty stuff. | |
254 | */ | |
255 | rc = dgnc_tty_preinit(); | |
0b99d589 | 256 | |
92ded48c | 257 | if (rc < 0) { |
1f26adc9 | 258 | pr_err(DRVSTR ": tty preinit - not enough memory (%d)\n", rc); |
d7312aab | 259 | goto failed_tty; |
92ded48c | 260 | } |
0b99d589 | 261 | |
92ded48c | 262 | /* Start the poller */ |
66663dc1 | 263 | spin_lock_irqsave(&dgnc_poll_lock, flags); |
38e0c9d2 | 264 | setup_timer(&dgnc_poll_timer, dgnc_poll_handler, 0); |
92ded48c KZ |
265 | dgnc_poll_time = jiffies + dgnc_jiffies_from_ms(dgnc_poll_tick); |
266 | dgnc_poll_timer.expires = dgnc_poll_time; | |
66663dc1 | 267 | spin_unlock_irqrestore(&dgnc_poll_lock, flags); |
0b99d589 | 268 | |
92ded48c KZ |
269 | add_timer(&dgnc_poll_timer); |
270 | ||
d7312aab AK |
271 | return 0; |
272 | ||
273 | failed_tty: | |
274 | device_destroy(dgnc_class, MKDEV(dgnc_Major, 0)); | |
275 | failed_device: | |
276 | class_destroy(dgnc_class); | |
277 | failed_class: | |
278 | unregister_chrdev(dgnc_Major, "dgnc"); | |
8f90ef80 | 279 | return rc; |
0b99d589 LL |
280 | } |
281 | ||
0b99d589 LL |
282 | /* returns count (>= 0), or negative on error */ |
283 | static int dgnc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) | |
817b7847 | 284 | { |
0b99d589 LL |
285 | int rc; |
286 | ||
287 | /* wake up and enable device */ | |
288 | rc = pci_enable_device(pdev); | |
289 | ||
290 | if (rc < 0) { | |
291 | rc = -EIO; | |
292 | } else { | |
bbecbacb | 293 | rc = dgnc_found_board(pdev, ent->driver_data); |
f1e51745 | 294 | if (rc == 0) |
0b99d589 | 295 | dgnc_NumBoards++; |
0b99d589 LL |
296 | } |
297 | return rc; | |
298 | } | |
299 | ||
0b99d589 LL |
300 | /* |
301 | * dgnc_cleanup_board() | |
302 | * | |
303 | * Free all the memory associated with a board | |
304 | */ | |
03425f55 | 305 | static void dgnc_cleanup_board(struct dgnc_board *brd) |
0b99d589 LL |
306 | { |
307 | int i = 0; | |
308 | ||
78adbb28 | 309 | if (!brd || brd->magic != DGNC_BOARD_MAGIC) |
eae9842a | 310 | return; |
0b99d589 LL |
311 | |
312 | switch (brd->device) { | |
313 | case PCI_DEVICE_CLASSIC_4_DID: | |
314 | case PCI_DEVICE_CLASSIC_8_DID: | |
315 | case PCI_DEVICE_CLASSIC_4_422_DID: | |
316 | case PCI_DEVICE_CLASSIC_8_422_DID: | |
317 | ||
318 | /* Tell card not to interrupt anymore. */ | |
319 | outb(0, brd->iobase + 0x4c); | |
320 | break; | |
321 | ||
322 | default: | |
323 | break; | |
324 | } | |
325 | ||
326 | if (brd->irq) | |
327 | free_irq(brd->irq, brd); | |
328 | ||
329 | tasklet_kill(&brd->helper_tasklet); | |
330 | ||
331 | if (brd->re_map_membase) { | |
332 | iounmap(brd->re_map_membase); | |
333 | brd->re_map_membase = NULL; | |
334 | } | |
335 | ||
336 | if (brd->msgbuf_head) { | |
337 | unsigned long flags; | |
338 | ||
66663dc1 | 339 | spin_lock_irqsave(&dgnc_global_lock, flags); |
0b99d589 | 340 | brd->msgbuf = NULL; |
f40e06f0 | 341 | dev_dbg(&brd->pdev->dev, "%s\n", brd->msgbuf_head); |
0b99d589 LL |
342 | kfree(brd->msgbuf_head); |
343 | brd->msgbuf_head = NULL; | |
66663dc1 | 344 | spin_unlock_irqrestore(&dgnc_global_lock, flags); |
eae9842a | 345 | } |
0b99d589 LL |
346 | |
347 | /* Free all allocated channels structs */ | |
348 | for (i = 0; i < MAXPORTS ; i++) { | |
349 | if (brd->channels[i]) { | |
36aa10aa VO |
350 | kfree(brd->channels[i]->ch_rqueue); |
351 | kfree(brd->channels[i]->ch_equeue); | |
352 | kfree(brd->channels[i]->ch_wqueue); | |
0b99d589 LL |
353 | kfree(brd->channels[i]); |
354 | brd->channels[i] = NULL; | |
355 | } | |
356 | } | |
357 | ||
36aa10aa | 358 | kfree(brd->flipbuf); |
0b99d589 LL |
359 | |
360 | dgnc_Board[brd->boardnum] = NULL; | |
361 | ||
eae9842a | 362 | kfree(brd); |
0b99d589 LL |
363 | } |
364 | ||
365 | ||
366 | /* | |
367 | * dgnc_found_board() | |
368 | * | |
369 | * A board has been found, init it. | |
370 | */ | |
371 | static int dgnc_found_board(struct pci_dev *pdev, int id) | |
372 | { | |
03425f55 | 373 | struct dgnc_board *brd; |
0b99d589 LL |
374 | unsigned int pci_irq; |
375 | int i = 0; | |
376 | int rc = 0; | |
377 | unsigned long flags; | |
378 | ||
eae9842a | 379 | /* get the board structure and prep it */ |
587abd7b SL |
380 | dgnc_Board[dgnc_NumBoards] = kzalloc(sizeof(*brd), GFP_KERNEL); |
381 | brd = dgnc_Board[dgnc_NumBoards]; | |
382 | ||
78adbb28 | 383 | if (!brd) |
8f90ef80 | 384 | return -ENOMEM; |
0b99d589 | 385 | |
eae9842a | 386 | /* make a temporary message buffer for the boot messages */ |
2e363be0 | 387 | brd->msgbuf_head = kcalloc(8192, sizeof(u8), GFP_KERNEL); |
587abd7b SL |
388 | brd->msgbuf = brd->msgbuf_head; |
389 | ||
eae9842a | 390 | if (!brd->msgbuf) { |
0b99d589 | 391 | kfree(brd); |
8f90ef80 | 392 | return -ENOMEM; |
eae9842a | 393 | } |
817b7847 | 394 | |
0b99d589 LL |
395 | /* store the info for the board we've found */ |
396 | brd->magic = DGNC_BOARD_MAGIC; | |
397 | brd->boardnum = dgnc_NumBoards; | |
398 | brd->vendor = dgnc_pci_tbl[id].vendor; | |
399 | brd->device = dgnc_pci_tbl[id].device; | |
400 | brd->pdev = pdev; | |
401 | brd->pci_bus = pdev->bus->number; | |
402 | brd->pci_slot = PCI_SLOT(pdev->devfn); | |
403 | brd->name = dgnc_Ids[id].name; | |
404 | brd->maxports = dgnc_Ids[id].maxports; | |
405 | if (dgnc_Ids[i].is_pci_express) | |
406 | brd->bd_flags |= BD_IS_PCI_EXPRESS; | |
407 | brd->dpastatus = BD_NOFEP; | |
408 | init_waitqueue_head(&brd->state_wait); | |
409 | ||
66663dc1 RD |
410 | spin_lock_init(&brd->bd_lock); |
411 | spin_lock_init(&brd->bd_intr_lock); | |
0b99d589 LL |
412 | |
413 | brd->state = BOARD_FOUND; | |
414 | ||
3f288962 | 415 | for (i = 0; i < MAXPORTS; i++) |
0b99d589 | 416 | brd->channels[i] = NULL; |
0b99d589 LL |
417 | |
418 | /* store which card & revision we have */ | |
419 | pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &brd->subvendor); | |
420 | pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &brd->subdevice); | |
421 | pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev); | |
422 | ||
423 | pci_irq = pdev->irq; | |
424 | brd->irq = pci_irq; | |
425 | ||
426 | ||
78adbb28 | 427 | switch (brd->device) { |
0b99d589 LL |
428 | |
429 | case PCI_DEVICE_CLASSIC_4_DID: | |
430 | case PCI_DEVICE_CLASSIC_8_DID: | |
431 | case PCI_DEVICE_CLASSIC_4_422_DID: | |
432 | case PCI_DEVICE_CLASSIC_8_422_DID: | |
433 | ||
434 | brd->dpatype = T_CLASSIC | T_PCIBUS; | |
435 | ||
0b99d589 LL |
436 | /* |
437 | * For PCI ClassicBoards | |
438 | * PCI Local Address (i.e. "resource" number) space | |
eae9842a LL |
439 | * 0 PLX Memory Mapped Config |
440 | * 1 PLX I/O Mapped Config | |
441 | * 2 I/O Mapped UARTs and Status | |
442 | * 3 Memory Mapped VPD | |
443 | * 4 Memory Mapped UARTs and Status | |
0b99d589 LL |
444 | */ |
445 | ||
446 | ||
447 | /* get the PCI Base Address Registers */ | |
448 | brd->membase = pci_resource_start(pdev, 4); | |
449 | ||
450 | if (!brd->membase) { | |
1f26adc9 RD |
451 | dev_err(&brd->pdev->dev, |
452 | "Card has no PCI IO resources, failing.\n"); | |
0b99d589 LL |
453 | return -ENODEV; |
454 | } | |
455 | ||
456 | brd->membase_end = pci_resource_end(pdev, 4); | |
457 | ||
458 | if (brd->membase & 1) | |
459 | brd->membase &= ~3; | |
460 | else | |
461 | brd->membase &= ~15; | |
462 | ||
eae9842a | 463 | brd->iobase = pci_resource_start(pdev, 1); |
0b99d589 | 464 | brd->iobase_end = pci_resource_end(pdev, 1); |
eae9842a | 465 | brd->iobase = ((unsigned int) (brd->iobase)) & 0xFFFE; |
0b99d589 LL |
466 | |
467 | /* Assign the board_ops struct */ | |
468 | brd->bd_ops = &dgnc_cls_ops; | |
469 | ||
470 | brd->bd_uart_offset = 0x8; | |
471 | brd->bd_dividend = 921600; | |
472 | ||
473 | dgnc_do_remap(brd); | |
474 | ||
475 | /* Get and store the board VPD, if it exists */ | |
476 | brd->bd_ops->vpd(brd); | |
477 | ||
478 | /* | |
479 | * Enable Local Interrupt 1 (0x1), | |
480 | * Local Interrupt 1 Polarity Active high (0x2), | |
481 | * Enable PCI interrupt (0x40) | |
482 | */ | |
483 | outb(0x43, brd->iobase + 0x4c); | |
484 | ||
485 | break; | |
486 | ||
487 | ||
488 | case PCI_DEVICE_NEO_4_DID: | |
489 | case PCI_DEVICE_NEO_8_DID: | |
490 | case PCI_DEVICE_NEO_2DB9_DID: | |
491 | case PCI_DEVICE_NEO_2DB9PRI_DID: | |
492 | case PCI_DEVICE_NEO_2RJ45_DID: | |
493 | case PCI_DEVICE_NEO_2RJ45PRI_DID: | |
494 | case PCI_DEVICE_NEO_1_422_DID: | |
495 | case PCI_DEVICE_NEO_1_422_485_DID: | |
496 | case PCI_DEVICE_NEO_2_422_485_DID: | |
497 | case PCI_DEVICE_NEO_EXPRESS_8_DID: | |
498 | case PCI_DEVICE_NEO_EXPRESS_4_DID: | |
499 | case PCI_DEVICE_NEO_EXPRESS_4RJ45_DID: | |
500 | case PCI_DEVICE_NEO_EXPRESS_8RJ45_DID: | |
501 | ||
502 | /* | |
503 | * This chip is set up 100% when we get to it. | |
817b7847 | 504 | * No need to enable global interrupts or anything. |
0b99d589 LL |
505 | */ |
506 | if (brd->bd_flags & BD_IS_PCI_EXPRESS) | |
507 | brd->dpatype = T_NEO_EXPRESS | T_PCIBUS; | |
508 | else | |
509 | brd->dpatype = T_NEO | T_PCIBUS; | |
510 | ||
0b99d589 LL |
511 | /* get the PCI Base Address Registers */ |
512 | brd->membase = pci_resource_start(pdev, 0); | |
513 | brd->membase_end = pci_resource_end(pdev, 0); | |
514 | ||
515 | if (brd->membase & 1) | |
516 | brd->membase &= ~3; | |
517 | else | |
518 | brd->membase &= ~15; | |
519 | ||
520 | /* Assign the board_ops struct */ | |
521 | brd->bd_ops = &dgnc_neo_ops; | |
522 | ||
523 | brd->bd_uart_offset = 0x200; | |
524 | brd->bd_dividend = 921600; | |
525 | ||
526 | dgnc_do_remap(brd); | |
527 | ||
528 | if (brd->re_map_membase) { | |
529 | ||
65da04c1 | 530 | /* Read and store the dvid after remapping */ |
0b99d589 LL |
531 | brd->dvid = readb(brd->re_map_membase + 0x8D); |
532 | ||
533 | /* Get and store the board VPD, if it exists */ | |
534 | brd->bd_ops->vpd(brd); | |
535 | } | |
536 | break; | |
537 | ||
538 | default: | |
1f26adc9 RD |
539 | dev_err(&brd->pdev->dev, |
540 | "Didn't find any compatible Neo/Classic PCI boards.\n"); | |
8f90ef80 | 541 | return -ENXIO; |
0b99d589 LL |
542 | |
543 | } | |
544 | ||
545 | /* | |
546 | * Do tty device initialization. | |
547 | */ | |
548 | ||
549 | rc = dgnc_tty_register(brd); | |
550 | if (rc < 0) { | |
1f26adc9 | 551 | pr_err(DRVSTR ": Can't register tty devices (%d)\n", rc); |
0b99d589 LL |
552 | goto failed; |
553 | } | |
554 | ||
555 | rc = dgnc_finalize_board_init(brd); | |
556 | if (rc < 0) { | |
1f26adc9 | 557 | pr_err(DRVSTR ": Can't finalize board init (%d)\n", rc); |
0b99d589 LL |
558 | goto failed; |
559 | } | |
560 | ||
561 | rc = dgnc_tty_init(brd); | |
562 | if (rc < 0) { | |
1f26adc9 | 563 | pr_err(DRVSTR ": Can't init tty devices (%d)\n", rc); |
0b99d589 LL |
564 | goto failed; |
565 | } | |
566 | ||
567 | brd->state = BOARD_READY; | |
568 | brd->dpastatus = BD_RUNNING; | |
569 | ||
570 | dgnc_create_ports_sysfiles(brd); | |
571 | ||
572 | /* init our poll helper tasklet */ | |
371ec403 VH |
573 | tasklet_init(&brd->helper_tasklet, |
574 | brd->bd_ops->tasklet, | |
575 | (unsigned long) brd); | |
0b99d589 | 576 | |
66663dc1 | 577 | spin_lock_irqsave(&dgnc_global_lock, flags); |
0b99d589 | 578 | brd->msgbuf = NULL; |
f40e06f0 | 579 | dev_dbg(&brd->pdev->dev, "%s\n", brd->msgbuf_head); |
0b99d589 LL |
580 | kfree(brd->msgbuf_head); |
581 | brd->msgbuf_head = NULL; | |
66663dc1 | 582 | spin_unlock_irqrestore(&dgnc_global_lock, flags); |
0b99d589 LL |
583 | |
584 | /* | |
585 | * allocate flip buffer for board. | |
586 | * | |
587 | * Okay to malloc with GFP_KERNEL, we are not at interrupt | |
588 | * context, and there are no locks held. | |
589 | */ | |
52f9d668 | 590 | brd->flipbuf = kzalloc(MYFLIPLEN, GFP_KERNEL); |
0b99d589 | 591 | |
0b99d589 LL |
592 | wake_up_interruptible(&brd->state_wait); |
593 | ||
8f90ef80 | 594 | return 0; |
0b99d589 LL |
595 | |
596 | failed: | |
f6a14cf0 QL |
597 | dgnc_tty_uninit(brd); |
598 | brd->state = BOARD_FAILED; | |
599 | brd->dpastatus = BD_NOFEP; | |
0b99d589 | 600 | |
8f90ef80 | 601 | return -ENXIO; |
0b99d589 LL |
602 | |
603 | } | |
604 | ||
605 | ||
07467e50 VH |
606 | static int dgnc_finalize_board_init(struct dgnc_board *brd) |
607 | { | |
0b99d589 LL |
608 | int rc = 0; |
609 | ||
0b99d589 | 610 | if (!brd || brd->magic != DGNC_BOARD_MAGIC) |
8f90ef80 | 611 | return -ENODEV; |
0b99d589 | 612 | |
0b99d589 | 613 | if (brd->irq) { |
2b46be68 AS |
614 | rc = request_irq(brd->irq, brd->bd_ops->intr, |
615 | IRQF_SHARED, "DGNC", brd); | |
0b99d589 LL |
616 | |
617 | if (rc) { | |
2b46be68 AS |
618 | dev_err(&brd->pdev->dev, |
619 | "Failed to hook IRQ %d\n", brd->irq); | |
0b99d589 LL |
620 | brd->state = BOARD_FAILED; |
621 | brd->dpastatus = BD_NOFEP; | |
622 | rc = -ENODEV; | |
0b99d589 LL |
623 | } |
624 | } | |
8f90ef80 | 625 | return rc; |
0b99d589 LL |
626 | } |
627 | ||
628 | /* | |
629 | * Remap PCI memory. | |
630 | */ | |
03425f55 | 631 | static void dgnc_do_remap(struct dgnc_board *brd) |
0b99d589 LL |
632 | { |
633 | ||
634 | if (!brd || brd->magic != DGNC_BOARD_MAGIC) | |
635 | return; | |
636 | ||
637 | brd->re_map_membase = ioremap(brd->membase, 0x1000); | |
0b99d589 LL |
638 | } |
639 | ||
640 | ||
641 | /***************************************************************************** | |
642 | * | |
643 | * Function: | |
817b7847 | 644 | * |
0b99d589 LL |
645 | * dgnc_poll_handler |
646 | * | |
647 | * Author: | |
648 | * | |
649 | * Scott H Kilau | |
817b7847 | 650 | * |
0b99d589 LL |
651 | * Parameters: |
652 | * | |
817b7847 | 653 | * dummy -- ignored |
0b99d589 LL |
654 | * |
655 | * Return Values: | |
656 | * | |
657 | * none | |
658 | * | |
817b7847 LL |
659 | * Description: |
660 | * | |
0b99d589 LL |
661 | * As each timer expires, it determines (a) whether the "transmit" |
662 | * waiter needs to be woken up, and (b) whether the poller needs to | |
663 | * be rescheduled. | |
664 | * | |
665 | ******************************************************************************/ | |
666 | ||
667 | static void dgnc_poll_handler(ulong dummy) | |
668 | { | |
03425f55 | 669 | struct dgnc_board *brd; |
66663dc1 | 670 | unsigned long flags; |
0b99d589 LL |
671 | int i; |
672 | unsigned long new_time; | |
673 | ||
0b99d589 LL |
674 | /* Go thru each board, kicking off a tasklet for each if needed */ |
675 | for (i = 0; i < dgnc_NumBoards; i++) { | |
676 | brd = dgnc_Board[i]; | |
677 | ||
66663dc1 | 678 | spin_lock_irqsave(&brd->bd_lock, flags); |
0b99d589 | 679 | |
65da04c1 | 680 | /* If board is in a failed state don't schedule a tasklet */ |
0b99d589 | 681 | if (brd->state == BOARD_FAILED) { |
66663dc1 | 682 | spin_unlock_irqrestore(&brd->bd_lock, flags); |
0b99d589 LL |
683 | continue; |
684 | } | |
685 | ||
686 | /* Schedule a poll helper task */ | |
687 | tasklet_schedule(&brd->helper_tasklet); | |
688 | ||
66663dc1 | 689 | spin_unlock_irqrestore(&brd->bd_lock, flags); |
0b99d589 LL |
690 | } |
691 | ||
0b99d589 LL |
692 | /* |
693 | * Schedule ourself back at the nominal wakeup interval. | |
694 | */ | |
66663dc1 | 695 | spin_lock_irqsave(&dgnc_poll_lock, flags); |
0b99d589 LL |
696 | dgnc_poll_time += dgnc_jiffies_from_ms(dgnc_poll_tick); |
697 | ||
698 | new_time = dgnc_poll_time - jiffies; | |
699 | ||
3f288962 | 700 | if ((ulong) new_time >= 2 * dgnc_poll_tick) |
65da04c1 | 701 | dgnc_poll_time = jiffies + dgnc_jiffies_from_ms(dgnc_poll_tick); |
0b99d589 | 702 | |
38e0c9d2 | 703 | setup_timer(&dgnc_poll_timer, dgnc_poll_handler, 0); |
0b99d589 | 704 | dgnc_poll_timer.expires = dgnc_poll_time; |
66663dc1 | 705 | spin_unlock_irqrestore(&dgnc_poll_lock, flags); |
0b99d589 LL |
706 | |
707 | if (!dgnc_poll_stop) | |
708 | add_timer(&dgnc_poll_timer); | |
709 | } | |
710 | ||
711 | /* | |
712 | * dgnc_init_globals() | |
713 | * | |
714 | * This is where we initialize the globals from the static insmod | |
715 | * configuration variables. These are declared near the head of | |
716 | * this file. | |
717 | */ | |
718 | static void dgnc_init_globals(void) | |
719 | { | |
720 | int i = 0; | |
721 | ||
92ded48c | 722 | dgnc_NumBoards = 0; |
0b99d589 | 723 | |
3f288962 | 724 | for (i = 0; i < MAXBOARDS; i++) |
0b99d589 | 725 | dgnc_Board[i] = NULL; |
0b99d589 LL |
726 | |
727 | init_timer(&dgnc_poll_timer); | |
728 | } | |
729 |