1 /************************************************************************
2 * Copyright 2003 Digi International (www.digi.com)
4 * Copyright (C) 2004 IBM Corporation. All rights reserved.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
13 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
14 * PURPOSE. See the GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 * Temple Place - Suite 330, Boston,
21 * Contact Information:
22 * Scott H Kilau <Scott_Kilau@digi.com>
23 * Wendy Xiong <wendyx@us.ltcfwd.linux.ibm.com>
25 ***********************************************************************/
26 #include <linux/moduleparam.h>
27 #include <linux/pci.h>
31 MODULE_AUTHOR("Digi International, http://www.digi.com");
32 MODULE_DESCRIPTION("Driver for the Digi International Neo PCI based product line");
33 MODULE_SUPPORTED_DEVICE("jsm");
35 #define JSM_DRIVER_NAME "jsm"
37 #define JSM_MINOR_START 0
39 struct uart_driver jsm_uart_driver = {
41 .driver_name = JSM_DRIVER_NAME,
44 .minor = JSM_MINOR_START,
51 module_param(jsm_debug, int, 0);
52 module_param(jsm_rawreadok, int, 0);
53 MODULE_PARM_DESC(jsm_debug, "Driver debugging level");
54 MODULE_PARM_DESC(jsm_rawreadok, "Bypass flip buffers on input");
59 int jsm_driver_state = DRIVER_INITIALIZED;
60 spinlock_t jsm_board_head_lock = SPIN_LOCK_UNLOCKED;
61 LIST_HEAD(jsm_board_head);
63 static struct pci_device_id jsm_pci_tbl[] = {
64 { PCI_DEVICE (PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9), 0, 0, 0 },
65 { PCI_DEVICE (PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9PRI), 0, 0, 1 },
66 { PCI_DEVICE (PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45), 0, 0, 2 },
67 { PCI_DEVICE (PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45PRI), 0, 0, 3 },
68 { 0,} /* 0 terminated list. */
70 MODULE_DEVICE_TABLE(pci, jsm_pci_tbl);
72 static struct board_id jsm_Ids[] = {
73 { PCI_DEVICE_NEO_2DB9_PCI_NAME, 2 },
74 { PCI_DEVICE_NEO_2DB9PRI_PCI_NAME, 2 },
75 { PCI_DEVICE_NEO_2RJ45_PCI_NAME, 2 },
76 { PCI_DEVICE_NEO_2RJ45PRI_PCI_NAME, 2 },
80 char *jsm_driver_state_text[] = {
85 static int jsm_finalize_board_init(struct jsm_board *brd)
89 jsm_printk(INIT, INFO, &brd->pci_dev, "start\n");
92 rc = request_irq(brd->irq, brd->bd_ops->intr, SA_INTERRUPT|SA_SHIRQ, "JSM", brd);
95 printk(KERN_WARNING "Failed to hook IRQ %d\n",brd->irq);
96 brd->state = BOARD_FAILED;
97 brd->dpastatus = BD_NOFEP;
100 jsm_printk(INIT, INFO, &brd->pci_dev,
101 "Requested and received usage of IRQ %d\n", brd->irq);
109 * A board has been found, init it.
111 static int jsm_found_board(struct pci_dev *pdev, int id)
113 struct jsm_board *brd;
116 struct list_head *tmp;
117 struct jsm_board *cur_board_entry;
118 unsigned long lock_flags;
119 int adapter_count = 0;
122 brd = kmalloc(sizeof(struct jsm_board), GFP_KERNEL);
124 dev_err(&pdev->dev, "memory allocation for board structure failed\n");
127 memset(brd, 0, sizeof(struct jsm_board));
129 spin_lock_irqsave(&jsm_board_head_lock, lock_flags);
130 list_for_each(tmp, &jsm_board_head) {
132 list_entry(tmp, struct jsm_board,
134 if (cur_board_entry->boardnum != adapter_count) {
140 list_add_tail(&brd->jsm_board_entry, &jsm_board_head);
141 spin_unlock_irqrestore(&jsm_board_head_lock, lock_flags);
143 /* store the info for the board we've found */
144 brd->boardnum = adapter_count;
146 brd->name = jsm_Ids[id].name;
147 brd->maxports = jsm_Ids[id].maxports;
148 brd->dpastatus = BD_NOFEP;
149 init_waitqueue_head(&brd->state_wait);
151 spin_lock_init(&brd->bd_lock);
152 spin_lock_init(&brd->bd_intr_lock);
154 brd->state = BOARD_FOUND;
156 for (i = 0; i < brd->maxports; i++)
157 brd->channels[i] = NULL;
159 /* store which revision we have */
160 pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev);
162 brd->irq = pdev->irq;
164 switch(brd->pci_dev->device) {
166 case PCI_DEVICE_ID_NEO_2DB9:
167 case PCI_DEVICE_ID_NEO_2DB9PRI:
168 case PCI_DEVICE_ID_NEO_2RJ45:
169 case PCI_DEVICE_ID_NEO_2RJ45PRI:
172 * This chip is set up 100% when we get to it.
173 * No need to enable global interrupts or anything.
175 brd->dpatype = T_NEO | T_PCIBUS;
177 jsm_printk(INIT, INFO, &brd->pci_dev,
178 "jsm_found_board - NEO adapter\n");
180 /* get the PCI Base Address Registers */
181 brd->membase = pci_resource_start(pdev, 0);
182 brd->membase_end = pci_resource_end(pdev, 0);
184 if (brd->membase & 1)
189 /* Assign the board_ops struct */
190 brd->bd_ops = &jsm_neo_ops;
192 brd->bd_uart_offset = 0x200;
193 brd->bd_dividend = 921600;
195 brd->re_map_membase = ioremap(brd->membase, 0x1000);
196 jsm_printk(INIT, INFO, &brd->pci_dev,
197 "remapped mem: 0x%p\n", brd->re_map_membase);
198 if (!brd->re_map_membase) {
200 dev_err(&pdev->dev, "card has no PCI Memory resources, failing board.\n");
206 dev_err(&pdev->dev, "Did not find any compatible Neo or Classic PCI boards in system.\n");
212 * Do tty device initialization.
214 rc = jsm_finalize_board_init(brd);
216 dev_err(&pdev->dev, "Can't finalize board init (%d)\n", rc);
217 brd->state = BOARD_FAILED;
222 rc = jsm_tty_init(brd);
224 dev_err(&pdev->dev, "Can't init tty devices (%d)\n", rc);
225 brd->state = BOARD_FAILED;
230 rc = jsm_uart_port_init(brd);
232 dev_err(&pdev->dev, "Can't init uart port (%d)\n", rc);
233 brd->state = BOARD_FAILED;
238 brd->state = BOARD_READY;
239 brd->dpastatus = BD_RUNNING;
241 /* Log the information about the board */
242 dev_info(&pdev->dev, "board %d: %s (rev %d), irq %d\n",adapter_count, brd->name, brd->rev, brd->irq);
245 * allocate flip buffer for board.
247 * Okay to malloc with GFP_KERNEL, we are not at interrupt
248 * context, and there are no locks held.
250 brd->flipbuf = kmalloc(MYFLIPLEN, GFP_KERNEL);
252 dev_err(&pdev->dev, "memory allocation for flipbuf failed\n");
253 brd->state = BOARD_FAILED;
257 memset(brd->flipbuf, 0, MYFLIPLEN);
259 jsm_create_driver_sysfiles(pdev->dev.driver);
261 wake_up_interruptible(&brd->state_wait);
264 free_irq(brd->irq, brd);
267 iounmap(brd->re_map_membase);
271 /* returns count (>= 0), or negative on error */
272 static int jsm_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
276 rc = pci_enable_device(pdev);
278 dev_err(&pdev->dev, "Device enable FAILED\n");
282 if ((rc = pci_request_regions(pdev, "jsm"))) {
283 dev_err(&pdev->dev, "pci_request_region FAILED\n");
284 pci_disable_device(pdev);
288 if ((rc = jsm_found_board(pdev, ent->driver_data))) {
289 dev_err(&pdev->dev, "jsm_found_board FAILED\n");
290 pci_release_regions(pdev);
291 pci_disable_device(pdev);
299 * jsm_cleanup_board()
301 * Free all the memory associated with a board
303 static void jsm_cleanup_board(struct jsm_board *brd)
307 free_irq(brd->irq, brd);
308 iounmap(brd->re_map_membase);
310 /* Free all allocated channels structs */
311 for (i = 0; i < brd->maxports; i++) {
312 if (brd->channels[i]) {
313 if (brd->channels[i]->ch_rqueue)
314 kfree(brd->channels[i]->ch_rqueue);
315 if (brd->channels[i]->ch_equeue)
316 kfree(brd->channels[i]->ch_equeue);
317 if (brd->channels[i]->ch_wqueue)
318 kfree(brd->channels[i]->ch_wqueue);
319 kfree(brd->channels[i]);
323 pci_release_regions(brd->pci_dev);
324 pci_disable_device(brd->pci_dev);
329 static void jsm_remove_one(struct pci_dev *dev)
331 unsigned long lock_flags;
332 struct list_head *tmp;
333 struct jsm_board *brd;
335 spin_lock_irqsave(&jsm_board_head_lock, lock_flags);
336 list_for_each(tmp, &jsm_board_head) {
337 brd = list_entry(tmp, struct jsm_board,
339 if ( brd != NULL && brd->pci_dev == dev) {
340 jsm_remove_uart_port(brd);
341 jsm_cleanup_board(brd);
342 list_del(&brd->jsm_board_entry);
346 spin_unlock_irqrestore(&jsm_board_head_lock, lock_flags);
350 struct pci_driver jsm_driver = {
352 .probe = jsm_init_one,
353 .id_table = jsm_pci_tbl,
354 .remove = __devexit_p(jsm_remove_one),
360 * Module load. This is where it all starts.
362 static int __init jsm_init_module(void)
366 printk(KERN_INFO "%s, Digi International Part Number %s\n",
367 JSM_VERSION, JSM_VERSION);
370 * Initialize global stuff
373 rc = uart_register_driver(&jsm_uart_driver);
378 rc = pci_register_driver(&jsm_driver);
380 uart_unregister_driver(&jsm_uart_driver);
383 jsm_driver_state = DRIVER_READY;
388 module_init(jsm_init_module);
393 * Module unload. This is where it all ends.
395 static void __exit jsm_exit_module(void)
397 jsm_remove_driver_sysfiles(&jsm_driver.driver);
399 pci_unregister_driver(&jsm_driver);
401 uart_unregister_driver(&jsm_uart_driver);
403 module_exit(jsm_exit_module);
404 MODULE_LICENSE("GPL");