Commit | Line | Data |
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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 | ||
0b99d589 | 16 | #include <linux/kernel.h> |
0b99d589 LL |
17 | #include <linux/module.h> |
18 | #include <linux/pci.h> | |
68a5a5f3 | 19 | #include <linux/slab.h> |
0b99d589 | 20 | #include <linux/sched.h> |
0b99d589 LL |
21 | #include "dgnc_driver.h" |
22 | #include "dgnc_pci.h" | |
0b99d589 LL |
23 | #include "dgnc_mgmt.h" |
24 | #include "dgnc_tty.h" | |
0b99d589 LL |
25 | #include "dgnc_cls.h" |
26 | #include "dgnc_neo.h" | |
27 | #include "dgnc_sysfs.h" | |
28 | ||
29 | MODULE_LICENSE("GPL"); | |
30 | MODULE_AUTHOR("Digi International, http://www.digi.com"); | |
31 | MODULE_DESCRIPTION("Driver for the Digi International Neo and Classic PCI based product line"); | |
32 | MODULE_SUPPORTED_DEVICE("dgnc"); | |
33 | ||
0b99d589 LL |
34 | /************************************************************************** |
35 | * | |
36 | * protos for this file | |
37 | * | |
38 | */ | |
39 | static int dgnc_start(void); | |
03425f55 | 40 | static int dgnc_finalize_board_init(struct dgnc_board *brd); |
0b99d589 | 41 | static int dgnc_found_board(struct pci_dev *pdev, int id); |
03425f55 | 42 | static void dgnc_cleanup_board(struct dgnc_board *brd); |
0b99d589 | 43 | static void dgnc_poll_handler(ulong dummy); |
65da04c1 GS |
44 | static int dgnc_init_one(struct pci_dev *pdev, |
45 | const struct pci_device_id *ent); | |
03425f55 | 46 | static void dgnc_do_remap(struct dgnc_board *brd); |
0b99d589 | 47 | |
0b99d589 LL |
48 | /* |
49 | * File operations permitted on Control/Management major. | |
50 | */ | |
80e3e241 | 51 | static const struct file_operations dgnc_board_fops = { |
0b99d589 | 52 | .owner = THIS_MODULE, |
338fd80f | 53 | .unlocked_ioctl = dgnc_mgmt_ioctl, |
0b99d589 LL |
54 | .open = dgnc_mgmt_open, |
55 | .release = dgnc_mgmt_close | |
56 | }; | |
57 | ||
0b99d589 LL |
58 | /* |
59 | * Globals | |
60 | */ | |
80e3e241 DY |
61 | uint dgnc_num_boards; |
62 | struct dgnc_board *dgnc_board[MAXBOARDS]; | |
0b99d589 | 63 | DEFINE_SPINLOCK(dgnc_global_lock); |
51abf45c | 64 | DEFINE_SPINLOCK(dgnc_poll_lock); /* Poll scheduling lock */ |
80e3e241 | 65 | uint dgnc_major; |
0b99d589 LL |
66 | int dgnc_poll_tick = 20; /* Poll interval - 20 ms */ |
67 | ||
68 | /* | |
69 | * Static vars. | |
70 | */ | |
0b99d589 LL |
71 | static struct class *dgnc_class; |
72 | ||
73 | /* | |
74 | * Poller stuff | |
75 | */ | |
65da04c1 GS |
76 | static ulong dgnc_poll_time; /* Time of next poll */ |
77 | static uint dgnc_poll_stop; /* Used to tell poller to stop */ | |
0b99d589 LL |
78 | static struct timer_list dgnc_poll_timer; |
79 | ||
60e27886 KA |
80 | static const struct pci_device_id dgnc_pci_tbl[] = { |
81 | {PCI_DEVICE(DIGI_VID, PCI_DEVICE_CLASSIC_4_DID), .driver_data = 0}, | |
82 | {PCI_DEVICE(DIGI_VID, PCI_DEVICE_CLASSIC_4_422_DID), .driver_data = 1}, | |
83 | {PCI_DEVICE(DIGI_VID, PCI_DEVICE_CLASSIC_8_DID), .driver_data = 2}, | |
84 | {PCI_DEVICE(DIGI_VID, PCI_DEVICE_CLASSIC_8_422_DID), .driver_data = 3}, | |
85 | {0,} | |
0b99d589 LL |
86 | }; |
87 | MODULE_DEVICE_TABLE(pci, dgnc_pci_tbl); | |
88 | ||
89 | struct board_id { | |
446393e9 | 90 | unsigned char *name; |
0b99d589 LL |
91 | uint maxports; |
92 | unsigned int is_pci_express; | |
93 | }; | |
94 | ||
80e3e241 | 95 | static struct board_id dgnc_ids[] = { |
0b99d589 LL |
96 | { PCI_DEVICE_CLASSIC_4_PCI_NAME, 4, 0 }, |
97 | { PCI_DEVICE_CLASSIC_4_422_PCI_NAME, 4, 0 }, | |
98 | { PCI_DEVICE_CLASSIC_8_PCI_NAME, 8, 0 }, | |
99 | { PCI_DEVICE_CLASSIC_8_422_PCI_NAME, 8, 0 }, | |
100 | { PCI_DEVICE_NEO_4_PCI_NAME, 4, 0 }, | |
101 | { PCI_DEVICE_NEO_8_PCI_NAME, 8, 0 }, | |
102 | { PCI_DEVICE_NEO_2DB9_PCI_NAME, 2, 0 }, | |
103 | { PCI_DEVICE_NEO_2DB9PRI_PCI_NAME, 2, 0 }, | |
104 | { PCI_DEVICE_NEO_2RJ45_PCI_NAME, 2, 0 }, | |
105 | { PCI_DEVICE_NEO_2RJ45PRI_PCI_NAME, 2, 0 }, | |
106 | { PCI_DEVICE_NEO_1_422_PCI_NAME, 1, 0 }, | |
107 | { PCI_DEVICE_NEO_1_422_485_PCI_NAME, 1, 0 }, | |
108 | { PCI_DEVICE_NEO_2_422_485_PCI_NAME, 2, 0 }, | |
109 | { PCI_DEVICE_NEO_EXPRESS_8_PCI_NAME, 8, 1 }, | |
110 | { PCI_DEVICE_NEO_EXPRESS_4_PCI_NAME, 4, 1 }, | |
111 | { PCI_DEVICE_NEO_EXPRESS_4RJ45_PCI_NAME, 4, 1 }, | |
112 | { PCI_DEVICE_NEO_EXPRESS_8RJ45_PCI_NAME, 8, 1 }, | |
113 | { NULL, 0, 0 } | |
114 | }; | |
115 | ||
116 | static struct pci_driver dgnc_driver = { | |
117 | .name = "dgnc", | |
118 | .probe = dgnc_init_one, | |
119 | .id_table = dgnc_pci_tbl, | |
0b99d589 LL |
120 | }; |
121 | ||
0b99d589 LL |
122 | /************************************************************************ |
123 | * | |
124 | * Driver load/unload functions | |
125 | * | |
126 | ************************************************************************/ | |
127 | ||
18f038e6 | 128 | static void cleanup(bool sysfiles) |
1e881002 KZ |
129 | { |
130 | int i; | |
66663dc1 | 131 | unsigned long flags; |
1e881002 | 132 | |
66663dc1 | 133 | spin_lock_irqsave(&dgnc_poll_lock, flags); |
1e881002 | 134 | dgnc_poll_stop = 1; |
66663dc1 | 135 | spin_unlock_irqrestore(&dgnc_poll_lock, flags); |
1e881002 KZ |
136 | |
137 | /* Turn off poller right away. */ | |
138 | del_timer_sync(&dgnc_poll_timer); | |
139 | ||
18f038e6 SM |
140 | if (sysfiles) |
141 | dgnc_remove_driver_sysfiles(&dgnc_driver); | |
1e881002 | 142 | |
80e3e241 | 143 | device_destroy(dgnc_class, MKDEV(dgnc_major, 0)); |
ed7f92da | 144 | class_destroy(dgnc_class); |
80e3e241 | 145 | unregister_chrdev(dgnc_major, "dgnc"); |
1e881002 | 146 | |
80e3e241 DY |
147 | for (i = 0; i < dgnc_num_boards; ++i) { |
148 | dgnc_remove_ports_sysfiles(dgnc_board[i]); | |
149 | dgnc_tty_uninit(dgnc_board[i]); | |
150 | dgnc_cleanup_board(dgnc_board[i]); | |
1e881002 KZ |
151 | } |
152 | ||
153 | dgnc_tty_post_uninit(); | |
18f038e6 | 154 | } |
1e881002 | 155 | |
18f038e6 SM |
156 | /* |
157 | * dgnc_cleanup_module() | |
158 | * | |
159 | * Module unload. This is where it all ends. | |
160 | */ | |
598b1529 | 161 | static void __exit dgnc_cleanup_module(void) |
18f038e6 SM |
162 | { |
163 | cleanup(true); | |
b3ca2e08 | 164 | pci_unregister_driver(&dgnc_driver); |
1e881002 | 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 | 173 | { |
f4edff52 | 174 | int rc; |
0b99d589 | 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); |
e9961fc1 SM |
188 | if (rc) { |
189 | pr_warn("WARNING: dgnc driver load failed. No Digi Neo or Classic boards found.\n"); | |
18f038e6 | 190 | cleanup(false); |
e9961fc1 | 191 | return rc; |
0b99d589 | 192 | } |
e9961fc1 | 193 | dgnc_create_driver_sysfiles(&dgnc_driver); |
0b99d589 | 194 | |
e9961fc1 | 195 | return 0; |
0b99d589 LL |
196 | } |
197 | ||
1e881002 KZ |
198 | module_init(dgnc_init_module); |
199 | module_exit(dgnc_cleanup_module); | |
0b99d589 LL |
200 | |
201 | /* | |
202 | * Start of driver. | |
203 | */ | |
204 | static int dgnc_start(void) | |
205 | { | |
206 | int rc = 0; | |
207 | unsigned long flags; | |
d7312aab | 208 | struct device *dev; |
0b99d589 | 209 | |
6d99d6a3 SM |
210 | /* make sure timer is initialized before we do anything else */ |
211 | init_timer(&dgnc_poll_timer); | |
0b99d589 | 212 | |
92ded48c KZ |
213 | /* |
214 | * Register our base character device into the kernel. | |
215 | * This allows the download daemon to connect to the downld device | |
216 | * before any of the boards are init'ed. | |
ed7f92da KZ |
217 | * |
218 | * Register management/dpa devices | |
92ded48c | 219 | */ |
80e3e241 | 220 | rc = register_chrdev(0, "dgnc", &dgnc_board_fops); |
5f9dca1e | 221 | if (rc < 0) { |
1f26adc9 | 222 | pr_err(DRVSTR ": Can't register dgnc driver device (%d)\n", rc); |
5f9dca1e | 223 | return rc; |
92ded48c | 224 | } |
80e3e241 | 225 | dgnc_major = rc; |
ed7f92da KZ |
226 | |
227 | dgnc_class = class_create(THIS_MODULE, "dgnc_mgmt"); | |
d7312aab AK |
228 | if (IS_ERR(dgnc_class)) { |
229 | rc = PTR_ERR(dgnc_class); | |
230 | pr_err(DRVSTR ": Can't create dgnc_mgmt class (%d)\n", rc); | |
231 | goto failed_class; | |
232 | } | |
233 | ||
234 | dev = device_create(dgnc_class, NULL, | |
80e3e241 | 235 | MKDEV(dgnc_major, 0), |
d7312aab AK |
236 | NULL, "dgnc_mgmt"); |
237 | if (IS_ERR(dev)) { | |
238 | rc = PTR_ERR(dev); | |
239 | pr_err(DRVSTR ": Can't create device (%d)\n", rc); | |
240 | goto failed_device; | |
241 | } | |
0b99d589 | 242 | |
92ded48c KZ |
243 | /* |
244 | * Init any global tty stuff. | |
245 | */ | |
246 | rc = dgnc_tty_preinit(); | |
0b99d589 | 247 | |
92ded48c | 248 | if (rc < 0) { |
1f26adc9 | 249 | pr_err(DRVSTR ": tty preinit - not enough memory (%d)\n", rc); |
d7312aab | 250 | goto failed_tty; |
92ded48c | 251 | } |
0b99d589 | 252 | |
92ded48c | 253 | /* Start the poller */ |
66663dc1 | 254 | spin_lock_irqsave(&dgnc_poll_lock, flags); |
38e0c9d2 | 255 | setup_timer(&dgnc_poll_timer, dgnc_poll_handler, 0); |
92ded48c KZ |
256 | dgnc_poll_time = jiffies + dgnc_jiffies_from_ms(dgnc_poll_tick); |
257 | dgnc_poll_timer.expires = dgnc_poll_time; | |
66663dc1 | 258 | spin_unlock_irqrestore(&dgnc_poll_lock, flags); |
0b99d589 | 259 | |
92ded48c KZ |
260 | add_timer(&dgnc_poll_timer); |
261 | ||
d7312aab AK |
262 | return 0; |
263 | ||
264 | failed_tty: | |
80e3e241 | 265 | device_destroy(dgnc_class, MKDEV(dgnc_major, 0)); |
d7312aab AK |
266 | failed_device: |
267 | class_destroy(dgnc_class); | |
268 | failed_class: | |
80e3e241 | 269 | unregister_chrdev(dgnc_major, "dgnc"); |
8f90ef80 | 270 | return rc; |
0b99d589 LL |
271 | } |
272 | ||
0b99d589 LL |
273 | /* returns count (>= 0), or negative on error */ |
274 | static int dgnc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) | |
817b7847 | 275 | { |
0b99d589 LL |
276 | int rc; |
277 | ||
278 | /* wake up and enable device */ | |
279 | rc = pci_enable_device(pdev); | |
280 | ||
757b816e SM |
281 | if (rc) |
282 | return -EIO; | |
283 | ||
284 | rc = dgnc_found_board(pdev, ent->driver_data); | |
285 | if (rc == 0) | |
80e3e241 | 286 | dgnc_num_boards++; |
757b816e | 287 | |
0b99d589 LL |
288 | return rc; |
289 | } | |
290 | ||
0b99d589 LL |
291 | /* |
292 | * dgnc_cleanup_board() | |
293 | * | |
294 | * Free all the memory associated with a board | |
295 | */ | |
03425f55 | 296 | static void dgnc_cleanup_board(struct dgnc_board *brd) |
0b99d589 LL |
297 | { |
298 | int i = 0; | |
299 | ||
78adbb28 | 300 | if (!brd || brd->magic != DGNC_BOARD_MAGIC) |
eae9842a | 301 | return; |
0b99d589 LL |
302 | |
303 | switch (brd->device) { | |
304 | case PCI_DEVICE_CLASSIC_4_DID: | |
305 | case PCI_DEVICE_CLASSIC_8_DID: | |
306 | case PCI_DEVICE_CLASSIC_4_422_DID: | |
307 | case PCI_DEVICE_CLASSIC_8_422_DID: | |
308 | ||
309 | /* Tell card not to interrupt anymore. */ | |
310 | outb(0, brd->iobase + 0x4c); | |
311 | break; | |
312 | ||
313 | default: | |
314 | break; | |
315 | } | |
316 | ||
317 | if (brd->irq) | |
318 | free_irq(brd->irq, brd); | |
319 | ||
320 | tasklet_kill(&brd->helper_tasklet); | |
321 | ||
322 | if (brd->re_map_membase) { | |
323 | iounmap(brd->re_map_membase); | |
324 | brd->re_map_membase = NULL; | |
325 | } | |
326 | ||
327 | if (brd->msgbuf_head) { | |
328 | unsigned long flags; | |
329 | ||
66663dc1 | 330 | spin_lock_irqsave(&dgnc_global_lock, flags); |
0b99d589 | 331 | brd->msgbuf = NULL; |
f40e06f0 | 332 | dev_dbg(&brd->pdev->dev, "%s\n", brd->msgbuf_head); |
0b99d589 LL |
333 | kfree(brd->msgbuf_head); |
334 | brd->msgbuf_head = NULL; | |
66663dc1 | 335 | spin_unlock_irqrestore(&dgnc_global_lock, flags); |
eae9842a | 336 | } |
0b99d589 LL |
337 | |
338 | /* Free all allocated channels structs */ | |
339 | for (i = 0; i < MAXPORTS ; i++) { | |
340 | if (brd->channels[i]) { | |
36aa10aa VO |
341 | kfree(brd->channels[i]->ch_rqueue); |
342 | kfree(brd->channels[i]->ch_equeue); | |
343 | kfree(brd->channels[i]->ch_wqueue); | |
0b99d589 LL |
344 | kfree(brd->channels[i]); |
345 | brd->channels[i] = NULL; | |
346 | } | |
347 | } | |
348 | ||
80e3e241 | 349 | dgnc_board[brd->boardnum] = NULL; |
0b99d589 | 350 | |
eae9842a | 351 | kfree(brd); |
0b99d589 LL |
352 | } |
353 | ||
0b99d589 LL |
354 | /* |
355 | * dgnc_found_board() | |
356 | * | |
357 | * A board has been found, init it. | |
358 | */ | |
359 | static int dgnc_found_board(struct pci_dev *pdev, int id) | |
360 | { | |
03425f55 | 361 | struct dgnc_board *brd; |
0b99d589 LL |
362 | unsigned int pci_irq; |
363 | int i = 0; | |
364 | int rc = 0; | |
365 | unsigned long flags; | |
366 | ||
eae9842a | 367 | /* get the board structure and prep it */ |
80e3e241 DY |
368 | dgnc_board[dgnc_num_boards] = kzalloc(sizeof(*brd), GFP_KERNEL); |
369 | brd = dgnc_board[dgnc_num_boards]; | |
587abd7b | 370 | |
78adbb28 | 371 | if (!brd) |
8f90ef80 | 372 | return -ENOMEM; |
0b99d589 | 373 | |
eae9842a | 374 | /* make a temporary message buffer for the boot messages */ |
2e363be0 | 375 | brd->msgbuf_head = kcalloc(8192, sizeof(u8), GFP_KERNEL); |
587abd7b SL |
376 | brd->msgbuf = brd->msgbuf_head; |
377 | ||
eae9842a | 378 | if (!brd->msgbuf) { |
0b99d589 | 379 | kfree(brd); |
8f90ef80 | 380 | return -ENOMEM; |
eae9842a | 381 | } |
817b7847 | 382 | |
0b99d589 LL |
383 | /* store the info for the board we've found */ |
384 | brd->magic = DGNC_BOARD_MAGIC; | |
80e3e241 | 385 | brd->boardnum = dgnc_num_boards; |
0b99d589 LL |
386 | brd->vendor = dgnc_pci_tbl[id].vendor; |
387 | brd->device = dgnc_pci_tbl[id].device; | |
388 | brd->pdev = pdev; | |
389 | brd->pci_bus = pdev->bus->number; | |
390 | brd->pci_slot = PCI_SLOT(pdev->devfn); | |
80e3e241 DY |
391 | brd->name = dgnc_ids[id].name; |
392 | brd->maxports = dgnc_ids[id].maxports; | |
393 | if (dgnc_ids[i].is_pci_express) | |
0b99d589 LL |
394 | brd->bd_flags |= BD_IS_PCI_EXPRESS; |
395 | brd->dpastatus = BD_NOFEP; | |
396 | init_waitqueue_head(&brd->state_wait); | |
397 | ||
66663dc1 RD |
398 | spin_lock_init(&brd->bd_lock); |
399 | spin_lock_init(&brd->bd_intr_lock); | |
0b99d589 LL |
400 | |
401 | brd->state = BOARD_FOUND; | |
402 | ||
3f288962 | 403 | for (i = 0; i < MAXPORTS; i++) |
0b99d589 | 404 | brd->channels[i] = NULL; |
0b99d589 LL |
405 | |
406 | /* store which card & revision we have */ | |
407 | pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &brd->subvendor); | |
408 | pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &brd->subdevice); | |
409 | pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev); | |
410 | ||
411 | pci_irq = pdev->irq; | |
412 | brd->irq = pci_irq; | |
413 | ||
78adbb28 | 414 | switch (brd->device) { |
0b99d589 LL |
415 | case PCI_DEVICE_CLASSIC_4_DID: |
416 | case PCI_DEVICE_CLASSIC_8_DID: | |
417 | case PCI_DEVICE_CLASSIC_4_422_DID: | |
418 | case PCI_DEVICE_CLASSIC_8_422_DID: | |
419 | ||
420 | brd->dpatype = T_CLASSIC | T_PCIBUS; | |
421 | ||
0b99d589 LL |
422 | /* |
423 | * For PCI ClassicBoards | |
424 | * PCI Local Address (i.e. "resource" number) space | |
eae9842a LL |
425 | * 0 PLX Memory Mapped Config |
426 | * 1 PLX I/O Mapped Config | |
427 | * 2 I/O Mapped UARTs and Status | |
428 | * 3 Memory Mapped VPD | |
429 | * 4 Memory Mapped UARTs and Status | |
0b99d589 LL |
430 | */ |
431 | ||
0b99d589 LL |
432 | /* get the PCI Base Address Registers */ |
433 | brd->membase = pci_resource_start(pdev, 4); | |
434 | ||
435 | if (!brd->membase) { | |
1f26adc9 RD |
436 | dev_err(&brd->pdev->dev, |
437 | "Card has no PCI IO resources, failing.\n"); | |
0b99d589 LL |
438 | return -ENODEV; |
439 | } | |
440 | ||
441 | brd->membase_end = pci_resource_end(pdev, 4); | |
442 | ||
443 | if (brd->membase & 1) | |
444 | brd->membase &= ~3; | |
445 | else | |
446 | brd->membase &= ~15; | |
447 | ||
eae9842a | 448 | brd->iobase = pci_resource_start(pdev, 1); |
0b99d589 | 449 | brd->iobase_end = pci_resource_end(pdev, 1); |
6f418259 | 450 | brd->iobase = ((unsigned int)(brd->iobase)) & 0xFFFE; |
0b99d589 LL |
451 | |
452 | /* Assign the board_ops struct */ | |
453 | brd->bd_ops = &dgnc_cls_ops; | |
454 | ||
455 | brd->bd_uart_offset = 0x8; | |
456 | brd->bd_dividend = 921600; | |
457 | ||
458 | dgnc_do_remap(brd); | |
459 | ||
460 | /* Get and store the board VPD, if it exists */ | |
461 | brd->bd_ops->vpd(brd); | |
462 | ||
463 | /* | |
464 | * Enable Local Interrupt 1 (0x1), | |
465 | * Local Interrupt 1 Polarity Active high (0x2), | |
466 | * Enable PCI interrupt (0x40) | |
467 | */ | |
468 | outb(0x43, brd->iobase + 0x4c); | |
469 | ||
470 | break; | |
471 | ||
0b99d589 LL |
472 | case PCI_DEVICE_NEO_4_DID: |
473 | case PCI_DEVICE_NEO_8_DID: | |
474 | case PCI_DEVICE_NEO_2DB9_DID: | |
475 | case PCI_DEVICE_NEO_2DB9PRI_DID: | |
476 | case PCI_DEVICE_NEO_2RJ45_DID: | |
477 | case PCI_DEVICE_NEO_2RJ45PRI_DID: | |
478 | case PCI_DEVICE_NEO_1_422_DID: | |
479 | case PCI_DEVICE_NEO_1_422_485_DID: | |
480 | case PCI_DEVICE_NEO_2_422_485_DID: | |
481 | case PCI_DEVICE_NEO_EXPRESS_8_DID: | |
482 | case PCI_DEVICE_NEO_EXPRESS_4_DID: | |
483 | case PCI_DEVICE_NEO_EXPRESS_4RJ45_DID: | |
484 | case PCI_DEVICE_NEO_EXPRESS_8RJ45_DID: | |
485 | ||
486 | /* | |
487 | * This chip is set up 100% when we get to it. | |
817b7847 | 488 | * No need to enable global interrupts or anything. |
0b99d589 LL |
489 | */ |
490 | if (brd->bd_flags & BD_IS_PCI_EXPRESS) | |
491 | brd->dpatype = T_NEO_EXPRESS | T_PCIBUS; | |
492 | else | |
493 | brd->dpatype = T_NEO | T_PCIBUS; | |
494 | ||
0b99d589 LL |
495 | /* get the PCI Base Address Registers */ |
496 | brd->membase = pci_resource_start(pdev, 0); | |
497 | brd->membase_end = pci_resource_end(pdev, 0); | |
498 | ||
499 | if (brd->membase & 1) | |
500 | brd->membase &= ~3; | |
501 | else | |
502 | brd->membase &= ~15; | |
503 | ||
504 | /* Assign the board_ops struct */ | |
505 | brd->bd_ops = &dgnc_neo_ops; | |
506 | ||
507 | brd->bd_uart_offset = 0x200; | |
508 | brd->bd_dividend = 921600; | |
509 | ||
510 | dgnc_do_remap(brd); | |
511 | ||
512 | if (brd->re_map_membase) { | |
65da04c1 | 513 | /* Read and store the dvid after remapping */ |
0b99d589 LL |
514 | brd->dvid = readb(brd->re_map_membase + 0x8D); |
515 | ||
516 | /* Get and store the board VPD, if it exists */ | |
517 | brd->bd_ops->vpd(brd); | |
518 | } | |
519 | break; | |
520 | ||
521 | default: | |
1f26adc9 RD |
522 | dev_err(&brd->pdev->dev, |
523 | "Didn't find any compatible Neo/Classic PCI boards.\n"); | |
8f90ef80 | 524 | return -ENXIO; |
0b99d589 LL |
525 | } |
526 | ||
527 | /* | |
528 | * Do tty device initialization. | |
529 | */ | |
530 | ||
531 | rc = dgnc_tty_register(brd); | |
532 | if (rc < 0) { | |
1f26adc9 | 533 | pr_err(DRVSTR ": Can't register tty devices (%d)\n", rc); |
0b99d589 LL |
534 | goto failed; |
535 | } | |
536 | ||
537 | rc = dgnc_finalize_board_init(brd); | |
538 | if (rc < 0) { | |
1f26adc9 | 539 | pr_err(DRVSTR ": Can't finalize board init (%d)\n", rc); |
0b99d589 LL |
540 | goto failed; |
541 | } | |
542 | ||
543 | rc = dgnc_tty_init(brd); | |
544 | if (rc < 0) { | |
1f26adc9 | 545 | pr_err(DRVSTR ": Can't init tty devices (%d)\n", rc); |
0b99d589 LL |
546 | goto failed; |
547 | } | |
548 | ||
549 | brd->state = BOARD_READY; | |
550 | brd->dpastatus = BD_RUNNING; | |
551 | ||
552 | dgnc_create_ports_sysfiles(brd); | |
553 | ||
554 | /* init our poll helper tasklet */ | |
371ec403 VH |
555 | tasklet_init(&brd->helper_tasklet, |
556 | brd->bd_ops->tasklet, | |
6f418259 | 557 | (unsigned long)brd); |
0b99d589 | 558 | |
66663dc1 | 559 | spin_lock_irqsave(&dgnc_global_lock, flags); |
0b99d589 | 560 | brd->msgbuf = NULL; |
f40e06f0 | 561 | dev_dbg(&brd->pdev->dev, "%s\n", brd->msgbuf_head); |
0b99d589 LL |
562 | kfree(brd->msgbuf_head); |
563 | brd->msgbuf_head = NULL; | |
66663dc1 | 564 | spin_unlock_irqrestore(&dgnc_global_lock, flags); |
0b99d589 | 565 | |
0b99d589 LL |
566 | wake_up_interruptible(&brd->state_wait); |
567 | ||
8f90ef80 | 568 | return 0; |
0b99d589 LL |
569 | |
570 | failed: | |
f6a14cf0 QL |
571 | dgnc_tty_uninit(brd); |
572 | brd->state = BOARD_FAILED; | |
573 | brd->dpastatus = BD_NOFEP; | |
0b99d589 | 574 | |
8f90ef80 | 575 | return -ENXIO; |
0b99d589 LL |
576 | } |
577 | ||
07467e50 VH |
578 | static int dgnc_finalize_board_init(struct dgnc_board *brd) |
579 | { | |
0b99d589 LL |
580 | int rc = 0; |
581 | ||
0b99d589 | 582 | if (brd->irq) { |
2b46be68 AS |
583 | rc = request_irq(brd->irq, brd->bd_ops->intr, |
584 | IRQF_SHARED, "DGNC", brd); | |
0b99d589 LL |
585 | |
586 | if (rc) { | |
2b46be68 AS |
587 | dev_err(&brd->pdev->dev, |
588 | "Failed to hook IRQ %d\n", brd->irq); | |
0b99d589 LL |
589 | brd->state = BOARD_FAILED; |
590 | brd->dpastatus = BD_NOFEP; | |
591 | rc = -ENODEV; | |
0b99d589 LL |
592 | } |
593 | } | |
8f90ef80 | 594 | return rc; |
0b99d589 LL |
595 | } |
596 | ||
597 | /* | |
598 | * Remap PCI memory. | |
599 | */ | |
03425f55 | 600 | static void dgnc_do_remap(struct dgnc_board *brd) |
0b99d589 | 601 | { |
0b99d589 | 602 | brd->re_map_membase = ioremap(brd->membase, 0x1000); |
0b99d589 LL |
603 | } |
604 | ||
970e82df FA |
605 | /* |
606 | * | |
607 | * Function: | |
608 | * | |
609 | * dgnc_poll_handler | |
610 | * | |
611 | * Author: | |
612 | * | |
613 | * Scott H Kilau | |
614 | * | |
615 | * Parameters: | |
616 | * | |
617 | * dummy -- ignored | |
618 | * | |
619 | * Return Values: | |
620 | * | |
621 | * none | |
622 | * | |
623 | * Description: | |
624 | * | |
625 | * As each timer expires, it determines (a) whether the "transmit" | |
626 | * waiter needs to be woken up, and (b) whether the poller needs to | |
627 | * be rescheduled. | |
628 | * | |
629 | */ | |
0b99d589 LL |
630 | |
631 | static void dgnc_poll_handler(ulong dummy) | |
632 | { | |
03425f55 | 633 | struct dgnc_board *brd; |
66663dc1 | 634 | unsigned long flags; |
0b99d589 LL |
635 | int i; |
636 | unsigned long new_time; | |
637 | ||
0b99d589 | 638 | /* Go thru each board, kicking off a tasklet for each if needed */ |
80e3e241 DY |
639 | for (i = 0; i < dgnc_num_boards; i++) { |
640 | brd = dgnc_board[i]; | |
0b99d589 | 641 | |
66663dc1 | 642 | spin_lock_irqsave(&brd->bd_lock, flags); |
0b99d589 | 643 | |
65da04c1 | 644 | /* If board is in a failed state don't schedule a tasklet */ |
0b99d589 | 645 | if (brd->state == BOARD_FAILED) { |
66663dc1 | 646 | spin_unlock_irqrestore(&brd->bd_lock, flags); |
0b99d589 LL |
647 | continue; |
648 | } | |
649 | ||
650 | /* Schedule a poll helper task */ | |
651 | tasklet_schedule(&brd->helper_tasklet); | |
652 | ||
66663dc1 | 653 | spin_unlock_irqrestore(&brd->bd_lock, flags); |
0b99d589 LL |
654 | } |
655 | ||
0b99d589 LL |
656 | /* |
657 | * Schedule ourself back at the nominal wakeup interval. | |
658 | */ | |
66663dc1 | 659 | spin_lock_irqsave(&dgnc_poll_lock, flags); |
0b99d589 LL |
660 | dgnc_poll_time += dgnc_jiffies_from_ms(dgnc_poll_tick); |
661 | ||
662 | new_time = dgnc_poll_time - jiffies; | |
663 | ||
6f418259 | 664 | if ((ulong)new_time >= 2 * dgnc_poll_tick) |
65da04c1 | 665 | dgnc_poll_time = jiffies + dgnc_jiffies_from_ms(dgnc_poll_tick); |
0b99d589 | 666 | |
38e0c9d2 | 667 | setup_timer(&dgnc_poll_timer, dgnc_poll_handler, 0); |
0b99d589 | 668 | dgnc_poll_timer.expires = dgnc_poll_time; |
66663dc1 | 669 | spin_unlock_irqrestore(&dgnc_poll_lock, flags); |
0b99d589 LL |
670 | |
671 | if (!dgnc_poll_stop) | |
672 | add_timer(&dgnc_poll_timer); | |
673 | } |