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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
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
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
129
130
131
132
133
134
135
136
137
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
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
167
168
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
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
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
234 dev_err(&pdev->dev, "Can't init uart port (%d)\n", rc);
235 rc = -ENXIO;
236 goto out_free_irq;
237 }
238
239
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
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
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);
384
