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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 | 26 | ***********************************************************************/ |
578b9ce0 | 27 | #include <linux/module.h> |
1da177e4 | 28 | #include <linux/pci.h> |
5a0e3ad6 | 29 | #include <linux/slab.h> |
1da177e4 LT |
30 | |
31 | #include "jsm.h" | |
32 | ||
33 | MODULE_AUTHOR("Digi International, http://www.digi.com"); | |
614a7d6a CH |
34 | MODULE_DESCRIPTION("Driver for the Digi International " |
35 | "Neo PCI based product line"); | |
36 | MODULE_LICENSE("GPL"); | |
1da177e4 LT |
37 | MODULE_SUPPORTED_DEVICE("jsm"); |
38 | ||
39 | #define JSM_DRIVER_NAME "jsm" | |
40 | #define NR_PORTS 32 | |
41 | #define JSM_MINOR_START 0 | |
42 | ||
43 | struct uart_driver jsm_uart_driver = { | |
44 | .owner = THIS_MODULE, | |
45 | .driver_name = JSM_DRIVER_NAME, | |
46 | .dev_name = "ttyn", | |
9539c1d4 | 47 | .major = 0, |
1da177e4 LT |
48 | .minor = JSM_MINOR_START, |
49 | .nr = NR_PORTS, | |
1da177e4 LT |
50 | }; |
51 | ||
e6bdf24c BL |
52 | static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev, |
53 | pci_channel_state_t state); | |
54 | static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev); | |
55 | static void jsm_io_resume(struct pci_dev *pdev); | |
56 | ||
1d352035 | 57 | static const struct pci_error_handlers jsm_err_handler = { |
e6bdf24c BL |
58 | .error_detected = jsm_io_error_detected, |
59 | .slot_reset = jsm_io_slot_reset, | |
60 | .resume = jsm_io_resume, | |
61 | }; | |
62 | ||
1da177e4 | 63 | int jsm_debug; |
1da177e4 | 64 | module_param(jsm_debug, int, 0); |
1da177e4 | 65 | MODULE_PARM_DESC(jsm_debug, "Driver debugging level"); |
1da177e4 | 66 | |
aacf17ad | 67 | static int __devinit jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent) |
1da177e4 LT |
68 | { |
69 | int rc = 0; | |
614a7d6a CH |
70 | struct jsm_board *brd; |
71 | static int adapter_count = 0; | |
1da177e4 | 72 | |
614a7d6a CH |
73 | rc = pci_enable_device(pdev); |
74 | if (rc) { | |
75 | dev_err(&pdev->dev, "Device enable FAILED\n"); | |
76 | goto out; | |
1da177e4 | 77 | } |
1da177e4 | 78 | |
614a7d6a CH |
79 | rc = pci_request_regions(pdev, "jsm"); |
80 | if (rc) { | |
81 | dev_err(&pdev->dev, "pci_request_region FAILED\n"); | |
82 | goto out_disable_device; | |
83 | } | |
1da177e4 | 84 | |
8f31bb39 | 85 | brd = kzalloc(sizeof(struct jsm_board), GFP_KERNEL); |
1da177e4 | 86 | if (!brd) { |
614a7d6a CH |
87 | dev_err(&pdev->dev, |
88 | "memory allocation for board structure failed\n"); | |
89 | rc = -ENOMEM; | |
90 | goto out_release_regions; | |
1da177e4 | 91 | } |
1da177e4 | 92 | |
1da177e4 | 93 | /* store the info for the board we've found */ |
614a7d6a | 94 | brd->boardnum = adapter_count++; |
1da177e4 | 95 | brd->pci_dev = pdev; |
99da9047 SK |
96 | if (pdev->device == PCIE_DEVICE_ID_NEO_4_IBM) |
97 | brd->maxports = 4; | |
ffa7525c AL |
98 | else if (pdev->device == PCI_DEVICE_ID_DIGI_NEO_8) |
99 | brd->maxports = 8; | |
99da9047 SK |
100 | else |
101 | brd->maxports = 2; | |
1da177e4 | 102 | |
1da177e4 LT |
103 | spin_lock_init(&brd->bd_intr_lock); |
104 | ||
1da177e4 | 105 | /* store which revision we have */ |
44c10138 | 106 | brd->rev = pdev->revision; |
1da177e4 LT |
107 | |
108 | brd->irq = pdev->irq; | |
109 | ||
669fef46 | 110 | jsm_dbg(INIT, &brd->pci_dev, "jsm_found_board - NEO adapter\n"); |
1da177e4 | 111 | |
614a7d6a CH |
112 | /* get the PCI Base Address Registers */ |
113 | brd->membase = pci_resource_start(pdev, 0); | |
114 | brd->membase_end = pci_resource_end(pdev, 0); | |
1da177e4 | 115 | |
614a7d6a CH |
116 | if (brd->membase & 1) |
117 | brd->membase &= ~3; | |
118 | else | |
119 | brd->membase &= ~15; | |
1da177e4 | 120 | |
614a7d6a CH |
121 | /* Assign the board_ops struct */ |
122 | brd->bd_ops = &jsm_neo_ops; | |
1da177e4 | 123 | |
614a7d6a CH |
124 | brd->bd_uart_offset = 0x200; |
125 | brd->bd_dividend = 921600; | |
1da177e4 | 126 | |
af99d6f0 | 127 | brd->re_map_membase = ioremap(brd->membase, pci_resource_len(pdev, 0)); |
614a7d6a CH |
128 | if (!brd->re_map_membase) { |
129 | dev_err(&pdev->dev, | |
130 | "card has no PCI Memory resources, " | |
131 | "failing board.\n"); | |
132 | rc = -ENOMEM; | |
133 | goto out_kfree_brd; | |
1da177e4 LT |
134 | } |
135 | ||
614a7d6a | 136 | rc = request_irq(brd->irq, brd->bd_ops->intr, |
a88a477f | 137 | IRQF_SHARED, "JSM", brd); |
614a7d6a CH |
138 | if (rc) { |
139 | printk(KERN_WARNING "Failed to hook IRQ %d\n",brd->irq); | |
140 | goto out_iounmap; | |
1da177e4 LT |
141 | } |
142 | ||
143 | rc = jsm_tty_init(brd); | |
144 | if (rc < 0) { | |
145 | dev_err(&pdev->dev, "Can't init tty devices (%d)\n", rc); | |
e713abea | 146 | rc = -ENXIO; |
614a7d6a | 147 | goto out_free_irq; |
1da177e4 LT |
148 | } |
149 | ||
150 | rc = jsm_uart_port_init(brd); | |
151 | if (rc < 0) { | |
614a7d6a | 152 | /* XXX: leaking all resources from jsm_tty_init here! */ |
1da177e4 | 153 | dev_err(&pdev->dev, "Can't init uart port (%d)\n", rc); |
e713abea | 154 | rc = -ENXIO; |
614a7d6a | 155 | goto out_free_irq; |
1da177e4 LT |
156 | } |
157 | ||
1da177e4 | 158 | /* Log the information about the board */ |
614a7d6a CH |
159 | dev_info(&pdev->dev, "board %d: Digi Neo (rev %d), irq %d\n", |
160 | adapter_count, brd->rev, brd->irq); | |
1da177e4 | 161 | |
614a7d6a | 162 | pci_set_drvdata(pdev, brd); |
e6bdf24c | 163 | pci_save_state(pdev); |
1da177e4 | 164 | |
1da177e4 | 165 | return 0; |
614a7d6a | 166 | out_free_irq: |
54862ee0 | 167 | jsm_remove_uart_port(brd); |
1da177e4 | 168 | free_irq(brd->irq, brd); |
614a7d6a | 169 | out_iounmap: |
1da177e4 | 170 | iounmap(brd->re_map_membase); |
614a7d6a CH |
171 | out_kfree_brd: |
172 | kfree(brd); | |
173 | out_release_regions: | |
174 | pci_release_regions(pdev); | |
175 | out_disable_device: | |
176 | pci_disable_device(pdev); | |
177 | out: | |
1da177e4 LT |
178 | return rc; |
179 | } | |
180 | ||
e9fed567 | 181 | static void __devexit jsm_remove_one(struct pci_dev *pdev) |
1da177e4 | 182 | { |
614a7d6a | 183 | struct jsm_board *brd = pci_get_drvdata(pdev); |
1da177e4 LT |
184 | int i = 0; |
185 | ||
614a7d6a CH |
186 | jsm_remove_uart_port(brd); |
187 | ||
1da177e4 LT |
188 | free_irq(brd->irq, brd); |
189 | iounmap(brd->re_map_membase); | |
190 | ||
191 | /* Free all allocated channels structs */ | |
192 | for (i = 0; i < brd->maxports; i++) { | |
193 | if (brd->channels[i]) { | |
614a7d6a CH |
194 | kfree(brd->channels[i]->ch_rqueue); |
195 | kfree(brd->channels[i]->ch_equeue); | |
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); |
203 | } | |
204 | ||
614a7d6a CH |
205 | static struct pci_device_id jsm_pci_tbl[] = { |
206 | { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9), 0, 0, 0 }, | |
207 | { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9PRI), 0, 0, 1 }, | |
208 | { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45), 0, 0, 2 }, | |
209 | { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45PRI), 0, 0, 3 }, | |
99da9047 | 210 | { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_4_IBM), 0, 0, 4 }, |
ffa7525c | 211 | { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_NEO_8), 0, 0, 5 }, |
614a7d6a CH |
212 | { 0, } |
213 | }; | |
214 | MODULE_DEVICE_TABLE(pci, jsm_pci_tbl); | |
1da177e4 | 215 | |
614a7d6a | 216 | static struct pci_driver jsm_driver = { |
1da177e4 | 217 | .name = "jsm", |
1da177e4 | 218 | .id_table = jsm_pci_tbl, |
614a7d6a | 219 | .probe = jsm_probe_one, |
1da177e4 | 220 | .remove = __devexit_p(jsm_remove_one), |
e6bdf24c | 221 | .err_handler = &jsm_err_handler, |
1da177e4 LT |
222 | }; |
223 | ||
e6bdf24c BL |
224 | static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev, |
225 | pci_channel_state_t state) | |
226 | { | |
227 | struct jsm_board *brd = pci_get_drvdata(pdev); | |
228 | ||
229 | jsm_remove_uart_port(brd); | |
230 | ||
231 | return PCI_ERS_RESULT_NEED_RESET; | |
232 | } | |
233 | ||
234 | static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev) | |
235 | { | |
236 | int rc; | |
237 | ||
238 | rc = pci_enable_device(pdev); | |
239 | ||
240 | if (rc) | |
241 | return PCI_ERS_RESULT_DISCONNECT; | |
242 | ||
243 | pci_set_master(pdev); | |
244 | ||
245 | return PCI_ERS_RESULT_RECOVERED; | |
246 | } | |
247 | ||
248 | static void jsm_io_resume(struct pci_dev *pdev) | |
249 | { | |
250 | struct jsm_board *brd = pci_get_drvdata(pdev); | |
251 | ||
252 | pci_restore_state(pdev); | |
26aa38ca | 253 | pci_save_state(pdev); |
e6bdf24c BL |
254 | |
255 | jsm_uart_port_init(brd); | |
256 | } | |
257 | ||
1da177e4 LT |
258 | static int __init jsm_init_module(void) |
259 | { | |
614a7d6a | 260 | int rc; |
1da177e4 LT |
261 | |
262 | rc = uart_register_driver(&jsm_uart_driver); | |
614a7d6a CH |
263 | if (!rc) { |
264 | rc = pci_register_driver(&jsm_driver); | |
265 | if (rc) | |
266 | uart_unregister_driver(&jsm_uart_driver); | |
1da177e4 | 267 | } |
1da177e4 LT |
268 | return rc; |
269 | } | |
270 | ||
1da177e4 LT |
271 | static void __exit jsm_exit_module(void) |
272 | { | |
1da177e4 | 273 | pci_unregister_driver(&jsm_driver); |
1da177e4 LT |
274 | uart_unregister_driver(&jsm_uart_driver); |
275 | } | |
614a7d6a CH |
276 | |
277 | module_init(jsm_init_module); | |
1da177e4 | 278 | module_exit(jsm_exit_module); |