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1da177e4 LT |
1 | /************************************************************************ |
2 | * Copyright 2003 Digi International (www.digi.com) | |
3 | * | |
4 | * Copyright (C) 2004 IBM Corporation. All rights reserved. | |
5 | * | |
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) | |
9 | * any later version. | |
10 | * | |
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. | |
15 | * | |
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, | |
19 | * MA 02111-1307, USA. | |
20 | * | |
21 | * Contact Information: | |
22 | * Scott H Kilau <Scott_Kilau@digi.com> | |
2a08b4e9 | 23 | * Wendy Xiong <wendyx@us.ibm.com> |
1da177e4 | 24 | * |
c2236956 | 25 | * |
1da177e4 LT |
26 | ***********************************************************************/ |
27 | #include <linux/moduleparam.h> | |
28 | #include <linux/pci.h> | |
29 | ||
30 | #include "jsm.h" | |
31 | ||
32 | MODULE_AUTHOR("Digi International, http://www.digi.com"); | |
614a7d6a CH |
33 | MODULE_DESCRIPTION("Driver for the Digi International " |
34 | "Neo PCI based product line"); | |
35 | MODULE_LICENSE("GPL"); | |
1da177e4 LT |
36 | MODULE_SUPPORTED_DEVICE("jsm"); |
37 | ||
38 | #define JSM_DRIVER_NAME "jsm" | |
39 | #define NR_PORTS 32 | |
40 | #define JSM_MINOR_START 0 | |
41 | ||
42 | struct uart_driver jsm_uart_driver = { | |
43 | .owner = THIS_MODULE, | |
44 | .driver_name = JSM_DRIVER_NAME, | |
45 | .dev_name = "ttyn", | |
9539c1d4 | 46 | .major = 0, |
1da177e4 LT |
47 | .minor = JSM_MINOR_START, |
48 | .nr = NR_PORTS, | |
1da177e4 LT |
49 | }; |
50 | ||
51 | int jsm_debug; | |
1da177e4 | 52 | module_param(jsm_debug, int, 0); |
1da177e4 | 53 | MODULE_PARM_DESC(jsm_debug, "Driver debugging level"); |
1da177e4 | 54 | |
614a7d6a | 55 | static int jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent) |
1da177e4 LT |
56 | { |
57 | int rc = 0; | |
614a7d6a CH |
58 | struct jsm_board *brd; |
59 | static int adapter_count = 0; | |
60 | int retval; | |
1da177e4 | 61 | |
614a7d6a CH |
62 | rc = pci_enable_device(pdev); |
63 | if (rc) { | |
64 | dev_err(&pdev->dev, "Device enable FAILED\n"); | |
65 | goto out; | |
1da177e4 | 66 | } |
1da177e4 | 67 | |
614a7d6a CH |
68 | rc = pci_request_regions(pdev, "jsm"); |
69 | if (rc) { | |
70 | dev_err(&pdev->dev, "pci_request_region FAILED\n"); | |
71 | goto out_disable_device; | |
72 | } | |
1da177e4 | 73 | |
8f31bb39 | 74 | brd = kzalloc(sizeof(struct jsm_board), GFP_KERNEL); |
1da177e4 | 75 | if (!brd) { |
614a7d6a CH |
76 | dev_err(&pdev->dev, |
77 | "memory allocation for board structure failed\n"); | |
78 | rc = -ENOMEM; | |
79 | goto out_release_regions; | |
1da177e4 | 80 | } |
1da177e4 | 81 | |
1da177e4 | 82 | /* store the info for the board we've found */ |
614a7d6a | 83 | brd->boardnum = adapter_count++; |
1da177e4 | 84 | brd->pci_dev = pdev; |
614a7d6a | 85 | brd->maxports = 2; |
1da177e4 LT |
86 | |
87 | spin_lock_init(&brd->bd_lock); | |
88 | spin_lock_init(&brd->bd_intr_lock); | |
89 | ||
1da177e4 LT |
90 | /* store which revision we have */ |
91 | pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev); | |
92 | ||
93 | brd->irq = pdev->irq; | |
94 | ||
614a7d6a CH |
95 | jsm_printk(INIT, INFO, &brd->pci_dev, |
96 | "jsm_found_board - NEO adapter\n"); | |
1da177e4 | 97 | |
614a7d6a CH |
98 | /* get the PCI Base Address Registers */ |
99 | brd->membase = pci_resource_start(pdev, 0); | |
100 | brd->membase_end = pci_resource_end(pdev, 0); | |
1da177e4 | 101 | |
614a7d6a CH |
102 | if (brd->membase & 1) |
103 | brd->membase &= ~3; | |
104 | else | |
105 | brd->membase &= ~15; | |
1da177e4 | 106 | |
614a7d6a CH |
107 | /* Assign the board_ops struct */ |
108 | brd->bd_ops = &jsm_neo_ops; | |
1da177e4 | 109 | |
614a7d6a CH |
110 | brd->bd_uart_offset = 0x200; |
111 | brd->bd_dividend = 921600; | |
1da177e4 | 112 | |
614a7d6a CH |
113 | brd->re_map_membase = ioremap(brd->membase, 0x1000); |
114 | if (!brd->re_map_membase) { | |
115 | dev_err(&pdev->dev, | |
116 | "card has no PCI Memory resources, " | |
117 | "failing board.\n"); | |
118 | rc = -ENOMEM; | |
119 | goto out_kfree_brd; | |
1da177e4 LT |
120 | } |
121 | ||
614a7d6a | 122 | rc = request_irq(brd->irq, brd->bd_ops->intr, |
40663cc7 | 123 | IRQF_DISABLED|IRQF_SHARED, "JSM", brd); |
614a7d6a CH |
124 | if (rc) { |
125 | printk(KERN_WARNING "Failed to hook IRQ %d\n",brd->irq); | |
126 | goto out_iounmap; | |
1da177e4 LT |
127 | } |
128 | ||
129 | rc = jsm_tty_init(brd); | |
130 | if (rc < 0) { | |
131 | dev_err(&pdev->dev, "Can't init tty devices (%d)\n", rc); | |
1da177e4 | 132 | retval = -ENXIO; |
614a7d6a | 133 | goto out_free_irq; |
1da177e4 LT |
134 | } |
135 | ||
136 | rc = jsm_uart_port_init(brd); | |
137 | if (rc < 0) { | |
614a7d6a | 138 | /* XXX: leaking all resources from jsm_tty_init here! */ |
1da177e4 | 139 | dev_err(&pdev->dev, "Can't init uart port (%d)\n", rc); |
1da177e4 | 140 | retval = -ENXIO; |
614a7d6a | 141 | goto out_free_irq; |
1da177e4 LT |
142 | } |
143 | ||
1da177e4 | 144 | /* Log the information about the board */ |
614a7d6a CH |
145 | dev_info(&pdev->dev, "board %d: Digi Neo (rev %d), irq %d\n", |
146 | adapter_count, brd->rev, brd->irq); | |
1da177e4 LT |
147 | |
148 | /* | |
149 | * allocate flip buffer for board. | |
150 | * | |
151 | * Okay to malloc with GFP_KERNEL, we are not at interrupt | |
152 | * context, and there are no locks held. | |
153 | */ | |
8f31bb39 | 154 | brd->flipbuf = kzalloc(MYFLIPLEN, GFP_KERNEL); |
1da177e4 | 155 | if (!brd->flipbuf) { |
614a7d6a CH |
156 | /* XXX: leaking all resources from jsm_tty_init and |
157 | jsm_uart_port_init here! */ | |
1da177e4 | 158 | dev_err(&pdev->dev, "memory allocation for flipbuf failed\n"); |
1da177e4 | 159 | retval = -ENOMEM; |
614a7d6a | 160 | goto out_free_irq; |
1da177e4 | 161 | } |
1da177e4 | 162 | |
614a7d6a | 163 | pci_set_drvdata(pdev, brd); |
1da177e4 | 164 | |
1da177e4 | 165 | return 0; |
614a7d6a | 166 | out_free_irq: |
1da177e4 | 167 | free_irq(brd->irq, brd); |
614a7d6a | 168 | out_iounmap: |
1da177e4 | 169 | iounmap(brd->re_map_membase); |
614a7d6a CH |
170 | out_kfree_brd: |
171 | kfree(brd); | |
172 | out_release_regions: | |
173 | pci_release_regions(pdev); | |
174 | out_disable_device: | |
175 | pci_disable_device(pdev); | |
176 | out: | |
1da177e4 LT |
177 | return rc; |
178 | } | |
179 | ||
614a7d6a | 180 | static void jsm_remove_one(struct pci_dev *pdev) |
1da177e4 | 181 | { |
614a7d6a | 182 | struct jsm_board *brd = pci_get_drvdata(pdev); |
1da177e4 LT |
183 | int i = 0; |
184 | ||
614a7d6a CH |
185 | jsm_remove_uart_port(brd); |
186 | ||
1da177e4 LT |
187 | free_irq(brd->irq, brd); |
188 | iounmap(brd->re_map_membase); | |
189 | ||
190 | /* Free all allocated channels structs */ | |
191 | for (i = 0; i < brd->maxports; i++) { | |
192 | if (brd->channels[i]) { | |
614a7d6a CH |
193 | kfree(brd->channels[i]->ch_rqueue); |
194 | kfree(brd->channels[i]->ch_equeue); | |
195 | kfree(brd->channels[i]->ch_wqueue); | |
1da177e4 LT |
196 | kfree(brd->channels[i]); |
197 | } | |
198 | } | |
199 | ||
614a7d6a CH |
200 | pci_release_regions(pdev); |
201 | pci_disable_device(pdev); | |
1da177e4 LT |
202 | kfree(brd->flipbuf); |
203 | kfree(brd); | |
204 | } | |
205 | ||
614a7d6a CH |
206 | static struct pci_device_id jsm_pci_tbl[] = { |
207 | { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9), 0, 0, 0 }, | |
208 | { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9PRI), 0, 0, 1 }, | |
209 | { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45), 0, 0, 2 }, | |
210 | { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45PRI), 0, 0, 3 }, | |
211 | { 0, } | |
212 | }; | |
213 | MODULE_DEVICE_TABLE(pci, jsm_pci_tbl); | |
1da177e4 | 214 | |
614a7d6a | 215 | static struct pci_driver jsm_driver = { |
1da177e4 | 216 | .name = "jsm", |
1da177e4 | 217 | .id_table = jsm_pci_tbl, |
614a7d6a | 218 | .probe = jsm_probe_one, |
1da177e4 LT |
219 | .remove = __devexit_p(jsm_remove_one), |
220 | }; | |
221 | ||
1da177e4 LT |
222 | static int __init jsm_init_module(void) |
223 | { | |
614a7d6a | 224 | int rc; |
1da177e4 LT |
225 | |
226 | rc = uart_register_driver(&jsm_uart_driver); | |
614a7d6a CH |
227 | if (!rc) { |
228 | rc = pci_register_driver(&jsm_driver); | |
229 | if (rc) | |
230 | uart_unregister_driver(&jsm_uart_driver); | |
1da177e4 | 231 | } |
1da177e4 LT |
232 | return rc; |
233 | } | |
234 | ||
1da177e4 LT |
235 | static void __exit jsm_exit_module(void) |
236 | { | |
1da177e4 | 237 | pci_unregister_driver(&jsm_driver); |
1da177e4 LT |
238 | uart_unregister_driver(&jsm_uart_driver); |
239 | } | |
614a7d6a CH |
240 | |
241 | module_init(jsm_init_module); | |
1da177e4 | 242 | module_exit(jsm_exit_module); |