1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
|
/************************************************************************
* Copyright 2003 Digi International (www.digi.com)
*
* Copyright (C) 2004 IBM Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 * Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*
* Contact Information:
* Scott H Kilau <Scott_Kilau@digi.com>
* Wendy Xiong <wendyx@us.ltcfwd.linux.ibm.com>
*
***********************************************************************/
#include <linux/moduleparam.h>
#include <linux/pci.h>
#include "jsm.h"
MODULE_AUTHOR("Digi International, http://www.digi.com");
MODULE_DESCRIPTION("Driver for the Digi International "
"Neo PCI based product line");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("jsm");
#define JSM_DRIVER_NAME "jsm"
#define NR_PORTS 32
#define JSM_MINOR_START 0
struct uart_driver jsm_uart_driver = {
.owner = THIS_MODULE,
.driver_name = JSM_DRIVER_NAME,
.dev_name = "ttyn",
.major = 253,
.minor = JSM_MINOR_START,
.nr = NR_PORTS,
};
int jsm_debug;
int jsm_rawreadok;
module_param(jsm_debug, int, 0);
module_param(jsm_rawreadok, int, 0);
MODULE_PARM_DESC(jsm_debug, "Driver debugging level");
MODULE_PARM_DESC(jsm_rawreadok, "Bypass flip buffers on input");
static int jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
int rc = 0;
struct jsm_board *brd;
static int adapter_count = 0;
int retval;
rc = pci_enable_device(pdev);
if (rc) {
dev_err(&pdev->dev, "Device enable FAILED\n");
goto out;
}
rc = pci_request_regions(pdev, "jsm");
if (rc) {
dev_err(&pdev->dev, "pci_request_region FAILED\n");
goto out_disable_device;
}
brd = kmalloc(sizeof(struct jsm_board), GFP_KERNEL);
if (!brd) {
dev_err(&pdev->dev,
"memory allocation for board structure failed\n");
rc = -ENOMEM;
goto out_release_regions;
}
memset(brd, 0, sizeof(struct jsm_board));
/* store the info for the board we've found */
brd->boardnum = adapter_count++;
brd->pci_dev = pdev;
brd->maxports = 2;
spin_lock_init(&brd->bd_lock);
spin_lock_init(&brd->bd_intr_lock);
/* store which revision we have */
pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev);
brd->irq = pdev->irq;
jsm_printk(INIT, INFO, &brd->pci_dev,
"jsm_found_board - NEO adapter\n");
/* get the PCI Base Address Registers */
brd->membase = pci_resource_start(pdev, 0);
brd->membase_end = pci_resource_end(pdev, 0);
if (brd->membase & 1)
brd->membase &= ~3;
else
brd->membase &= ~15;
/* Assign the board_ops struct */
brd->bd_ops = &jsm_neo_ops;
brd->bd_uart_offset = 0x200;
brd->bd_dividend = 921600;
brd->re_map_membase = ioremap(brd->membase, 0x1000);
if (!brd->re_map_membase) {
dev_err(&pdev->dev,
"card has no PCI Memory resources, "
"failing board.\n");
rc = -ENOMEM;
goto out_kfree_brd;
}
rc = request_irq(brd->irq, brd->bd_ops->intr,
SA_INTERRUPT|SA_SHIRQ, "JSM", brd);
if (rc) {
printk(KERN_WARNING "Failed to hook IRQ %d\n",brd->irq);
goto out_iounmap;
}
rc = jsm_tty_init(brd);
if (rc < 0) {
dev_err(&pdev->dev, "Can't init tty devices (%d)\n", rc);
retval = -ENXIO;
goto out_free_irq;
}
rc = jsm_uart_port_init(brd);
if (rc < 0) {
/* XXX: leaking all resources from jsm_tty_init here! */
dev_err(&pdev->dev, "Can't init uart port (%d)\n", rc);
retval = -ENXIO;
goto out_free_irq;
}
/* Log the information about the board */
dev_info(&pdev->dev, "board %d: Digi Neo (rev %d), irq %d\n",
adapter_count, brd->rev, brd->irq);
/*
* allocate flip buffer for board.
*
* Okay to malloc with GFP_KERNEL, we are not at interrupt
* context, and there are no locks held.
*/
brd->flipbuf = kmalloc(MYFLIPLEN, GFP_KERNEL);
if (!brd->flipbuf) {
/* XXX: leaking all resources from jsm_tty_init and
jsm_uart_port_init here! */
dev_err(&pdev->dev, "memory allocation for flipbuf failed\n");
retval = -ENOMEM;
goto out_free_irq;
}
memset(brd->flipbuf, 0, MYFLIPLEN);
pci_set_drvdata(pdev, brd);
return 0;
out_free_irq:
free_irq(brd->irq, brd);
out_iounmap:
iounmap(brd->re_map_membase);
out_kfree_brd:
kfree(brd);
out_release_regions:
pci_release_regions(pdev);
out_disable_device:
pci_disable_device(pdev);
out:
return rc;
}
static void jsm_remove_one(struct pci_dev *pdev)
{
struct jsm_board *brd = pci_get_drvdata(pdev);
int i = 0;
jsm_remove_uart_port(brd);
free_irq(brd->irq, brd);
iounmap(brd->re_map_membase);
/* Free all allocated channels structs */
for (i = 0; i < brd->maxports; i++) {
if (brd->channels[i]) {
kfree(brd->channels[i]->ch_rqueue);
kfree(brd->channels[i]->ch_equeue);
kfree(brd->channels[i]->ch_wqueue);
kfree(brd->channels[i]);
}
}
pci_release_regions(pdev);
pci_disable_device(pdev);
kfree(brd->flipbuf);
kfree(brd);
}
static struct pci_device_id jsm_pci_tbl[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9), 0, 0, 0 },
{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9PRI), 0, 0, 1 },
{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45), 0, 0, 2 },
{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45PRI), 0, 0, 3 },
{ 0, }
};
MODULE_DEVICE_TABLE(pci, jsm_pci_tbl);
static struct pci_driver jsm_driver = {
.name = "jsm",
.id_table = jsm_pci_tbl,
.probe = jsm_probe_one,
.remove = __devexit_p(jsm_remove_one),
};
static int __init jsm_init_module(void)
{
int rc;
rc = uart_register_driver(&jsm_uart_driver);
if (!rc) {
rc = pci_register_driver(&jsm_driver);
if (rc)
uart_unregister_driver(&jsm_uart_driver);
}
return rc;
}
static void __exit jsm_exit_module(void)
{
pci_unregister_driver(&jsm_driver);
uart_unregister_driver(&jsm_uart_driver);
}
module_init(jsm_init_module);
module_exit(jsm_exit_module);
|
