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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>
23 * Wendy Xiong <wendyx@us.ibm.com>
24 *
25 *
26 ***********************************************************************/
27#include <linux/moduleparam.h>
28#include <linux/pci.h>
29#include <linux/slab.h>
30
31#include "jsm.h"
32
33MODULE_AUTHOR("Digi International, http://www.digi.com");
34MODULE_DESCRIPTION("Driver for the Digi International "
35 "Neo PCI based product line");
36MODULE_LICENSE("GPL");
37MODULE_SUPPORTED_DEVICE("jsm");
38
39#define JSM_DRIVER_NAME "jsm"
40#define NR_PORTS 32
41#define JSM_MINOR_START 0
42
43struct uart_driver jsm_uart_driver = {
44 .owner = THIS_MODULE,
45 .driver_name = JSM_DRIVER_NAME,
46 .dev_name = "ttyn",
47 .major = 0,
48 .minor = JSM_MINOR_START,
49 .nr = NR_PORTS,
50};
51
52static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev,
53 pci_channel_state_t state);
54static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev);
55static void jsm_io_resume(struct pci_dev *pdev);
56
57static struct pci_error_handlers jsm_err_handler = {
58 .error_detected = jsm_io_error_detected,
59 .slot_reset = jsm_io_slot_reset,
60 .resume = jsm_io_resume,
61};
62
63int jsm_debug;
64module_param(jsm_debug, int, 0);
65MODULE_PARM_DESC(jsm_debug, "Driver debugging level");
66
67static int __devinit jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
68{
69 int rc = 0;
70 struct jsm_board *brd;
71 static int adapter_count = 0;
72
73 rc = pci_enable_device(pdev);
74 if (rc) {
75 dev_err(&pdev->dev, "Device enable FAILED\n");
76 goto out;
77 }
78
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 }
84
85 brd = kzalloc(sizeof(struct jsm_board), GFP_KERNEL);
86 if (!brd) {
87 dev_err(&pdev->dev,
88 "memory allocation for board structure failed\n");
89 rc = -ENOMEM;
90 goto out_release_regions;
91 }
92
93 /* store the info for the board we've found */
94 brd->boardnum = adapter_count++;
95 brd->pci_dev = pdev;
96 if (pdev->device == PCIE_DEVICE_ID_NEO_4_IBM)
97 brd->maxports = 4;
98 else if (pdev->device == PCI_DEVICE_ID_DIGI_NEO_8)
99 brd->maxports = 8;
100 else
101 brd->maxports = 2;
102
103 spin_lock_init(&brd->bd_intr_lock);
104
105 /* store which revision we have */
106 brd->rev = pdev->revision;
107
108 brd->irq = pdev->irq;
109
110 jsm_printk(INIT, INFO, &brd->pci_dev,
111 "jsm_found_board - NEO adapter\n");
112
113 /* get the PCI Base Address Registers */
114 brd->membase = pci_resource_start(pdev, 0);
115 brd->membase_end = pci_resource_end(pdev, 0);
116
117 if (brd->membase & 1)
118 brd->membase &= ~3;
119 else
120 brd->membase &= ~15;
121
122 /* Assign the board_ops struct */
123 brd->bd_ops = &jsm_neo_ops;
124
125 brd->bd_uart_offset = 0x200;
126 brd->bd_dividend = 921600;
127
128 brd->re_map_membase = ioremap(brd->membase, pci_resource_len(pdev, 0));
129 if (!brd->re_map_membase) {
130 dev_err(&pdev->dev,
131 "card has no PCI Memory resources, "
132 "failing board.\n");
133 rc = -ENOMEM;
134 goto out_kfree_brd;
135 }
136
137 rc = request_irq(brd->irq, brd->bd_ops->intr,
138 IRQF_SHARED, "JSM", brd);
139 if (rc) {
140 printk(KERN_WARNING "Failed to hook IRQ %d\n",brd->irq);
141 goto out_iounmap;
142 }
143
144 rc = jsm_tty_init(brd);
145 if (rc < 0) {
146 dev_err(&pdev->dev, "Can't init tty devices (%d)\n", rc);
147 rc = -ENXIO;
148 goto out_free_irq;
149 }
150
151 rc = jsm_uart_port_init(brd);
152 if (rc < 0) {
153 /* XXX: leaking all resources from jsm_tty_init here! */
154 dev_err(&pdev->dev, "Can't init uart port (%d)\n", rc);
155 rc = -ENXIO;
156 goto out_free_irq;
157 }
158
159 /* Log the information about the board */
160 dev_info(&pdev->dev, "board %d: Digi Neo (rev %d), irq %d\n",
161 adapter_count, brd->rev, brd->irq);
162
163 /*
164 * allocate flip buffer for board.
165 *
166 * Okay to malloc with GFP_KERNEL, we are not at interrupt
167 * context, and there are no locks held.
168 */
169 brd->flipbuf = kzalloc(MYFLIPLEN, GFP_KERNEL);
170 if (!brd->flipbuf) {
171 /* XXX: leaking all resources from jsm_tty_init and
172 jsm_uart_port_init here! */
173 dev_err(&pdev->dev, "memory allocation for flipbuf failed\n");
174 rc = -ENOMEM;
175 goto out_free_uart;
176 }
177
178 pci_set_drvdata(pdev, brd);
179 pci_save_state(pdev);
180
181 return 0;
182 out_free_uart:
183 jsm_remove_uart_port(brd);
184 out_free_irq:
185 jsm_remove_uart_port(brd);
186 free_irq(brd->irq, brd);
187 out_iounmap:
188 iounmap(brd->re_map_membase);
189 out_kfree_brd:
190 kfree(brd);
191 out_release_regions:
192 pci_release_regions(pdev);
193 out_disable_device:
194 pci_disable_device(pdev);
195 out:
196 return rc;
197}
198
199static void __devexit jsm_remove_one(struct pci_dev *pdev)
200{
201 struct jsm_board *brd = pci_get_drvdata(pdev);
202 int i = 0;
203
204 jsm_remove_uart_port(brd);
205
206 free_irq(brd->irq, brd);
207 iounmap(brd->re_map_membase);
208
209 /* Free all allocated channels structs */
210 for (i = 0; i < brd->maxports; i++) {
211 if (brd->channels[i]) {
212 kfree(brd->channels[i]->ch_rqueue);
213 kfree(brd->channels[i]->ch_equeue);
214 kfree(brd->channels[i]->ch_wqueue);
215 kfree(brd->channels[i]);
216 }
217 }
218
219 pci_release_regions(pdev);
220 pci_disable_device(pdev);
221 kfree(brd->flipbuf);
222 kfree(brd);
223}
224
225static struct pci_device_id jsm_pci_tbl[] = {
226 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9), 0, 0, 0 },
227 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9PRI), 0, 0, 1 },
228 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45), 0, 0, 2 },
229 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45PRI), 0, 0, 3 },
230 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_4_IBM), 0, 0, 4 },
231 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_NEO_8), 0, 0, 5 },
232 { 0, }
233};
234MODULE_DEVICE_TABLE(pci, jsm_pci_tbl);
235
236static struct pci_driver jsm_driver = {
237 .name = "jsm",
238 .id_table = jsm_pci_tbl,
239 .probe = jsm_probe_one,
240 .remove = __devexit_p(jsm_remove_one),
241 .err_handler = &jsm_err_handler,
242};
243
244static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev,
245 pci_channel_state_t state)
246{
247 struct jsm_board *brd = pci_get_drvdata(pdev);
248
249 jsm_remove_uart_port(brd);
250
251 return PCI_ERS_RESULT_NEED_RESET;
252}
253
254static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev)
255{
256 int rc;
257
258 rc = pci_enable_device(pdev);
259
260 if (rc)
261 return PCI_ERS_RESULT_DISCONNECT;
262
263 pci_set_master(pdev);
264
265 return PCI_ERS_RESULT_RECOVERED;
266}
267
268static void jsm_io_resume(struct pci_dev *pdev)
269{
270 struct jsm_board *brd = pci_get_drvdata(pdev);
271
272 pci_restore_state(pdev);
273
274 jsm_uart_port_init(brd);
275}
276
277static int __init jsm_init_module(void)
278{
279 int rc;
280
281 rc = uart_register_driver(&jsm_uart_driver);
282 if (!rc) {
283 rc = pci_register_driver(&jsm_driver);
284 if (rc)
285 uart_unregister_driver(&jsm_uart_driver);
286 }
287 return rc;
288}
289
290static void __exit jsm_exit_module(void)
291{
292 pci_unregister_driver(&jsm_driver);
293 uart_unregister_driver(&jsm_uart_driver);
294}
295
296module_init(jsm_init_module);
297module_exit(jsm_exit_module);
1// SPDX-License-Identifier: GPL-2.0+
2/************************************************************************
3 * Copyright 2003 Digi International (www.digi.com)
4 *
5 * Copyright (C) 2004 IBM Corporation. All rights reserved.
6 *
7 * Contact Information:
8 * Scott H Kilau <Scott_Kilau@digi.com>
9 * Wendy Xiong <wendyx@us.ibm.com>
10 *
11 *
12 ***********************************************************************/
13#include <linux/module.h>
14#include <linux/pci.h>
15#include <linux/slab.h>
16
17#include "jsm.h"
18
19MODULE_AUTHOR("Digi International, http://www.digi.com");
20MODULE_DESCRIPTION("Driver for the Digi International Neo and Classic PCI based product line");
21MODULE_LICENSE("GPL");
22MODULE_SUPPORTED_DEVICE("jsm");
23
24#define JSM_DRIVER_NAME "jsm"
25#define NR_PORTS 32
26#define JSM_MINOR_START 0
27
28struct uart_driver jsm_uart_driver = {
29 .owner = THIS_MODULE,
30 .driver_name = JSM_DRIVER_NAME,
31 .dev_name = "ttyn",
32 .major = 0,
33 .minor = JSM_MINOR_START,
34 .nr = NR_PORTS,
35};
36
37static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev,
38 pci_channel_state_t state);
39static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev);
40static void jsm_io_resume(struct pci_dev *pdev);
41
42static const struct pci_error_handlers jsm_err_handler = {
43 .error_detected = jsm_io_error_detected,
44 .slot_reset = jsm_io_slot_reset,
45 .resume = jsm_io_resume,
46};
47
48int jsm_debug;
49module_param(jsm_debug, int, 0);
50MODULE_PARM_DESC(jsm_debug, "Driver debugging level");
51
52static int jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
53{
54 int rc = 0;
55 struct jsm_board *brd;
56 static int adapter_count;
57
58 rc = pci_enable_device(pdev);
59 if (rc) {
60 dev_err(&pdev->dev, "Device enable FAILED\n");
61 goto out;
62 }
63
64 rc = pci_request_regions(pdev, JSM_DRIVER_NAME);
65 if (rc) {
66 dev_err(&pdev->dev, "pci_request_region FAILED\n");
67 goto out_disable_device;
68 }
69
70 brd = kzalloc(sizeof(*brd), GFP_KERNEL);
71 if (!brd) {
72 rc = -ENOMEM;
73 goto out_release_regions;
74 }
75
76 /* store the info for the board we've found */
77 brd->boardnum = adapter_count++;
78 brd->pci_dev = pdev;
79
80 switch (pdev->device) {
81 case PCI_DEVICE_ID_NEO_2DB9:
82 case PCI_DEVICE_ID_NEO_2DB9PRI:
83 case PCI_DEVICE_ID_NEO_2RJ45:
84 case PCI_DEVICE_ID_NEO_2RJ45PRI:
85 case PCI_DEVICE_ID_NEO_2_422_485:
86 brd->maxports = 2;
87 break;
88
89 case PCI_DEVICE_ID_CLASSIC_4:
90 case PCI_DEVICE_ID_CLASSIC_4_422:
91 case PCI_DEVICE_ID_NEO_4:
92 case PCIE_DEVICE_ID_NEO_4:
93 case PCIE_DEVICE_ID_NEO_4RJ45:
94 case PCIE_DEVICE_ID_NEO_4_IBM:
95 brd->maxports = 4;
96 break;
97
98 case PCI_DEVICE_ID_CLASSIC_8:
99 case PCI_DEVICE_ID_CLASSIC_8_422:
100 case PCI_DEVICE_ID_DIGI_NEO_8:
101 case PCIE_DEVICE_ID_NEO_8:
102 case PCIE_DEVICE_ID_NEO_8RJ45:
103 brd->maxports = 8;
104 break;
105
106 default:
107 brd->maxports = 1;
108 break;
109 }
110
111 spin_lock_init(&brd->bd_intr_lock);
112
113 /* store which revision we have */
114 brd->rev = pdev->revision;
115
116 brd->irq = pdev->irq;
117
118 switch (pdev->device) {
119 case PCI_DEVICE_ID_CLASSIC_4:
120 case PCI_DEVICE_ID_CLASSIC_4_422:
121 case PCI_DEVICE_ID_CLASSIC_8:
122 case PCI_DEVICE_ID_CLASSIC_8_422:
123
124 jsm_dbg(INIT, &brd->pci_dev,
125 "jsm_found_board - Classic adapter\n");
126
127 /*
128 * For PCI ClassicBoards
129 * PCI Local Address (.i.e. "resource" number) space
130 * 0 PLX Memory Mapped Config
131 * 1 PLX I/O Mapped Config
132 * 2 I/O Mapped UARTs and Status
133 * 3 Memory Mapped VPD
134 * 4 Memory Mapped UARTs and Status
135 */
136
137 /* Get the PCI Base Address Registers */
138 brd->membase = pci_resource_start(pdev, 4);
139 brd->membase_end = pci_resource_end(pdev, 4);
140
141 if (brd->membase & 0x1)
142 brd->membase &= ~0x3;
143 else
144 brd->membase &= ~0xF;
145
146 brd->iobase = pci_resource_start(pdev, 1);
147 brd->iobase_end = pci_resource_end(pdev, 1);
148 brd->iobase = ((unsigned int)(brd->iobase)) & 0xFFFE;
149
150 /* Assign the board_ops struct */
151 brd->bd_ops = &jsm_cls_ops;
152
153 brd->bd_uart_offset = 0x8;
154 brd->bd_dividend = 921600;
155
156 brd->re_map_membase = ioremap(brd->membase,
157 pci_resource_len(pdev, 4));
158 if (!brd->re_map_membase) {
159 dev_err(&pdev->dev,
160 "Card has no PCI Memory resources, failing board.\n");
161 rc = -ENOMEM;
162 goto out_kfree_brd;
163 }
164
165 /*
166 * Enable Local Interrupt 1 (0x1),
167 * Local Interrupt 1 Polarity Active high (0x2),
168 * Enable PCI interrupt (0x43)
169 */
170 outb(0x43, brd->iobase + 0x4c);
171
172 break;
173
174 case PCI_DEVICE_ID_NEO_2DB9:
175 case PCI_DEVICE_ID_NEO_2DB9PRI:
176 case PCI_DEVICE_ID_NEO_2RJ45:
177 case PCI_DEVICE_ID_NEO_2RJ45PRI:
178 case PCI_DEVICE_ID_NEO_2_422_485:
179 case PCI_DEVICE_ID_NEO_4:
180 case PCIE_DEVICE_ID_NEO_4:
181 case PCIE_DEVICE_ID_NEO_4RJ45:
182 case PCIE_DEVICE_ID_NEO_4_IBM:
183 case PCI_DEVICE_ID_DIGI_NEO_8:
184 case PCIE_DEVICE_ID_NEO_8:
185 case PCIE_DEVICE_ID_NEO_8RJ45:
186
187 jsm_dbg(INIT, &brd->pci_dev, "jsm_found_board - NEO adapter\n");
188
189 /* get the PCI Base Address Registers */
190 brd->membase = pci_resource_start(pdev, 0);
191 brd->membase_end = pci_resource_end(pdev, 0);
192
193 if (brd->membase & 1)
194 brd->membase &= ~0x3;
195 else
196 brd->membase &= ~0xF;
197
198 /* Assign the board_ops struct */
199 brd->bd_ops = &jsm_neo_ops;
200
201 brd->bd_uart_offset = 0x200;
202 brd->bd_dividend = 921600;
203
204 brd->re_map_membase = ioremap(brd->membase,
205 pci_resource_len(pdev, 0));
206 if (!brd->re_map_membase) {
207 dev_err(&pdev->dev,
208 "Card has no PCI Memory resources, failing board.\n");
209 rc = -ENOMEM;
210 goto out_kfree_brd;
211 }
212
213 break;
214 default:
215 return -ENXIO;
216 }
217
218 rc = request_irq(brd->irq, brd->bd_ops->intr, IRQF_SHARED, "JSM", brd);
219 if (rc) {
220 dev_warn(&pdev->dev, "Failed to hook IRQ %d\n", brd->irq);
221 goto out_iounmap;
222 }
223
224 rc = jsm_tty_init(brd);
225 if (rc < 0) {
226 dev_err(&pdev->dev, "Can't init tty devices (%d)\n", rc);
227 rc = -ENXIO;
228 goto out_free_irq;
229 }
230
231 rc = jsm_uart_port_init(brd);
232 if (rc < 0) {
233 /* XXX: leaking all resources from jsm_tty_init here! */
234 dev_err(&pdev->dev, "Can't init uart port (%d)\n", rc);
235 rc = -ENXIO;
236 goto out_free_irq;
237 }
238
239 /* Log the information about the board */
240 dev_info(&pdev->dev, "board %d: Digi Classic/Neo (rev %d), irq %d\n",
241 adapter_count, brd->rev, brd->irq);
242
243 pci_set_drvdata(pdev, brd);
244 pci_save_state(pdev);
245
246 return 0;
247 out_free_irq:
248 jsm_remove_uart_port(brd);
249 free_irq(brd->irq, brd);
250 out_iounmap:
251 iounmap(brd->re_map_membase);
252 out_kfree_brd:
253 kfree(brd);
254 out_release_regions:
255 pci_release_regions(pdev);
256 out_disable_device:
257 pci_disable_device(pdev);
258 out:
259 return rc;
260}
261
262static void jsm_remove_one(struct pci_dev *pdev)
263{
264 struct jsm_board *brd = pci_get_drvdata(pdev);
265 int i = 0;
266
267 switch (pdev->device) {
268 case PCI_DEVICE_ID_CLASSIC_4:
269 case PCI_DEVICE_ID_CLASSIC_4_422:
270 case PCI_DEVICE_ID_CLASSIC_8:
271 case PCI_DEVICE_ID_CLASSIC_8_422:
272 /* Tell card not to interrupt anymore. */
273 outb(0x0, brd->iobase + 0x4c);
274 break;
275 default:
276 break;
277 }
278
279 jsm_remove_uart_port(brd);
280
281 free_irq(brd->irq, brd);
282 iounmap(brd->re_map_membase);
283
284 /* Free all allocated channels structs */
285 for (i = 0; i < brd->maxports; i++) {
286 if (brd->channels[i]) {
287 kfree(brd->channels[i]->ch_rqueue);
288 kfree(brd->channels[i]->ch_equeue);
289 kfree(brd->channels[i]);
290 }
291 }
292
293 pci_release_regions(pdev);
294 pci_disable_device(pdev);
295 kfree(brd);
296}
297
298static const struct pci_device_id jsm_pci_tbl[] = {
299 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9), 0, 0, 0 },
300 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9PRI), 0, 0, 1 },
301 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45), 0, 0, 2 },
302 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45PRI), 0, 0, 3 },
303 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_4_IBM), 0, 0, 4 },
304 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_NEO_8), 0, 0, 5 },
305 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_4), 0, 0, 6 },
306 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_1_422), 0, 0, 7 },
307 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_1_422_485), 0, 0, 8 },
308 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2_422_485), 0, 0, 9 },
309 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_8), 0, 0, 10 },
310 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_4), 0, 0, 11 },
311 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_4RJ45), 0, 0, 12 },
312 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_8RJ45), 0, 0, 13 },
313 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_4), 0, 0, 14 },
314 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_4_422), 0, 0, 15 },
315 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_8), 0, 0, 16 },
316 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_8_422), 0, 0, 17 },
317 { 0, }
318};
319MODULE_DEVICE_TABLE(pci, jsm_pci_tbl);
320
321static struct pci_driver jsm_driver = {
322 .name = JSM_DRIVER_NAME,
323 .id_table = jsm_pci_tbl,
324 .probe = jsm_probe_one,
325 .remove = jsm_remove_one,
326 .err_handler = &jsm_err_handler,
327};
328
329static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev,
330 pci_channel_state_t state)
331{
332 struct jsm_board *brd = pci_get_drvdata(pdev);
333
334 jsm_remove_uart_port(brd);
335
336 return PCI_ERS_RESULT_NEED_RESET;
337}
338
339static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev)
340{
341 int rc;
342
343 rc = pci_enable_device(pdev);
344
345 if (rc)
346 return PCI_ERS_RESULT_DISCONNECT;
347
348 pci_set_master(pdev);
349
350 return PCI_ERS_RESULT_RECOVERED;
351}
352
353static void jsm_io_resume(struct pci_dev *pdev)
354{
355 struct jsm_board *brd = pci_get_drvdata(pdev);
356
357 pci_restore_state(pdev);
358 pci_save_state(pdev);
359
360 jsm_uart_port_init(brd);
361}
362
363static int __init jsm_init_module(void)
364{
365 int rc;
366
367 rc = uart_register_driver(&jsm_uart_driver);
368 if (!rc) {
369 rc = pci_register_driver(&jsm_driver);
370 if (rc)
371 uart_unregister_driver(&jsm_uart_driver);
372 }
373 return rc;
374}
375
376static void __exit jsm_exit_module(void)
377{
378 pci_unregister_driver(&jsm_driver);
379 uart_unregister_driver(&jsm_uart_driver);
380}
381
382module_init(jsm_init_module);
383module_exit(jsm_exit_module);