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22#include <linux/module.h>
23#include <linux/pci.h>
24#include <linux/slab.h>
25
26#include "jsm.h"
27
28MODULE_AUTHOR("Digi International, http://www.digi.com");
29MODULE_DESCRIPTION("Driver for the Digi International Neo and Classic PCI based product line");
30MODULE_LICENSE("GPL");
31MODULE_SUPPORTED_DEVICE("jsm");
32
33#define JSM_DRIVER_NAME "jsm"
34#define NR_PORTS 32
35#define JSM_MINOR_START 0
36
37struct uart_driver jsm_uart_driver = {
38 .owner = THIS_MODULE,
39 .driver_name = JSM_DRIVER_NAME,
40 .dev_name = "ttyn",
41 .major = 0,
42 .minor = JSM_MINOR_START,
43 .nr = NR_PORTS,
44};
45
46static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev,
47 pci_channel_state_t state);
48static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev);
49static void jsm_io_resume(struct pci_dev *pdev);
50
51static const struct pci_error_handlers jsm_err_handler = {
52 .error_detected = jsm_io_error_detected,
53 .slot_reset = jsm_io_slot_reset,
54 .resume = jsm_io_resume,
55};
56
57int jsm_debug;
58module_param(jsm_debug, int, 0);
59MODULE_PARM_DESC(jsm_debug, "Driver debugging level");
60
61static int jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
62{
63 int rc = 0;
64 struct jsm_board *brd;
65 static int adapter_count;
66
67 rc = pci_enable_device(pdev);
68 if (rc) {
69 dev_err(&pdev->dev, "Device enable FAILED\n");
70 goto out;
71 }
72
73 rc = pci_request_regions(pdev, JSM_DRIVER_NAME);
74 if (rc) {
75 dev_err(&pdev->dev, "pci_request_region FAILED\n");
76 goto out_disable_device;
77 }
78
79 brd = kzalloc(sizeof(*brd), GFP_KERNEL);
80 if (!brd) {
81 rc = -ENOMEM;
82 goto out_release_regions;
83 }
84
85
86 brd->boardnum = adapter_count++;
87 brd->pci_dev = pdev;
88
89 switch (pdev->device) {
90 case PCI_DEVICE_ID_NEO_2DB9:
91 case PCI_DEVICE_ID_NEO_2DB9PRI:
92 case PCI_DEVICE_ID_NEO_2RJ45:
93 case PCI_DEVICE_ID_NEO_2RJ45PRI:
94 case PCI_DEVICE_ID_NEO_2_422_485:
95 brd->maxports = 2;
96 break;
97
98 case PCI_DEVICE_ID_CLASSIC_4:
99 case PCI_DEVICE_ID_CLASSIC_4_422:
100 case PCI_DEVICE_ID_NEO_4:
101 case PCIE_DEVICE_ID_NEO_4:
102 case PCIE_DEVICE_ID_NEO_4RJ45:
103 case PCIE_DEVICE_ID_NEO_4_IBM:
104 brd->maxports = 4;
105 break;
106
107 case PCI_DEVICE_ID_CLASSIC_8:
108 case PCI_DEVICE_ID_CLASSIC_8_422:
109 case PCI_DEVICE_ID_DIGI_NEO_8:
110 case PCIE_DEVICE_ID_NEO_8:
111 case PCIE_DEVICE_ID_NEO_8RJ45:
112 brd->maxports = 8;
113 break;
114
115 default:
116 brd->maxports = 1;
117 break;
118 }
119
120 spin_lock_init(&brd->bd_intr_lock);
121
122
123 brd->rev = pdev->revision;
124
125 brd->irq = pdev->irq;
126
127 switch (pdev->device) {
128 case PCI_DEVICE_ID_CLASSIC_4:
129 case PCI_DEVICE_ID_CLASSIC_4_422:
130 case PCI_DEVICE_ID_CLASSIC_8:
131 case PCI_DEVICE_ID_CLASSIC_8_422:
132
133 jsm_dbg(INIT, &brd->pci_dev,
134 "jsm_found_board - Classic adapter\n");
135
136
137
138
139
140
141
142
143
144
145
146
147 brd->membase = pci_resource_start(pdev, 4);
148 brd->membase_end = pci_resource_end(pdev, 4);
149
150 if (brd->membase & 0x1)
151 brd->membase &= ~0x3;
152 else
153 brd->membase &= ~0xF;
154
155 brd->iobase = pci_resource_start(pdev, 1);
156 brd->iobase_end = pci_resource_end(pdev, 1);
157 brd->iobase = ((unsigned int)(brd->iobase)) & 0xFFFE;
158
159
160 brd->bd_ops = &jsm_cls_ops;
161
162 brd->bd_uart_offset = 0x8;
163 brd->bd_dividend = 921600;
164
165 brd->re_map_membase = ioremap(brd->membase,
166 pci_resource_len(pdev, 4));
167 if (!brd->re_map_membase) {
168 dev_err(&pdev->dev,
169 "Card has no PCI Memory resources, failing board.\n");
170 rc = -ENOMEM;
171 goto out_kfree_brd;
172 }
173
174
175
176
177
178
179 outb(0x43, brd->iobase + 0x4c);
180
181 break;
182
183 case PCI_DEVICE_ID_NEO_2DB9:
184 case PCI_DEVICE_ID_NEO_2DB9PRI:
185 case PCI_DEVICE_ID_NEO_2RJ45:
186 case PCI_DEVICE_ID_NEO_2RJ45PRI:
187 case PCI_DEVICE_ID_NEO_2_422_485:
188 case PCI_DEVICE_ID_NEO_4:
189 case PCIE_DEVICE_ID_NEO_4:
190 case PCIE_DEVICE_ID_NEO_4RJ45:
191 case PCIE_DEVICE_ID_NEO_4_IBM:
192 case PCI_DEVICE_ID_DIGI_NEO_8:
193 case PCIE_DEVICE_ID_NEO_8:
194 case PCIE_DEVICE_ID_NEO_8RJ45:
195
196 jsm_dbg(INIT, &brd->pci_dev, "jsm_found_board - NEO adapter\n");
197
198
199 brd->membase = pci_resource_start(pdev, 0);
200 brd->membase_end = pci_resource_end(pdev, 0);
201
202 if (brd->membase & 1)
203 brd->membase &= ~0x3;
204 else
205 brd->membase &= ~0xF;
206
207
208 brd->bd_ops = &jsm_neo_ops;
209
210 brd->bd_uart_offset = 0x200;
211 brd->bd_dividend = 921600;
212
213 brd->re_map_membase = ioremap(brd->membase,
214 pci_resource_len(pdev, 0));
215 if (!brd->re_map_membase) {
216 dev_err(&pdev->dev,
217 "Card has no PCI Memory resources, failing board.\n");
218 rc = -ENOMEM;
219 goto out_kfree_brd;
220 }
221
222 break;
223 default:
224 return -ENXIO;
225 }
226
227 rc = request_irq(brd->irq, brd->bd_ops->intr, IRQF_SHARED, "JSM", brd);
228 if (rc) {
229 dev_warn(&pdev->dev, "Failed to hook IRQ %d\n", brd->irq);
230 goto out_iounmap;
231 }
232
233 rc = jsm_tty_init(brd);
234 if (rc < 0) {
235 dev_err(&pdev->dev, "Can't init tty devices (%d)\n", rc);
236 rc = -ENXIO;
237 goto out_free_irq;
238 }
239
240 rc = jsm_uart_port_init(brd);
241 if (rc < 0) {
242
243 dev_err(&pdev->dev, "Can't init uart port (%d)\n", rc);
244 rc = -ENXIO;
245 goto out_free_irq;
246 }
247
248
249 dev_info(&pdev->dev, "board %d: Digi Classic/Neo (rev %d), irq %d\n",
250 adapter_count, brd->rev, brd->irq);
251
252 pci_set_drvdata(pdev, brd);
253 pci_save_state(pdev);
254
255 return 0;
256 out_free_irq:
257 jsm_remove_uart_port(brd);
258 free_irq(brd->irq, brd);
259 out_iounmap:
260 iounmap(brd->re_map_membase);
261 out_kfree_brd:
262 kfree(brd);
263 out_release_regions:
264 pci_release_regions(pdev);
265 out_disable_device:
266 pci_disable_device(pdev);
267 out:
268 return rc;
269}
270
271static void jsm_remove_one(struct pci_dev *pdev)
272{
273 struct jsm_board *brd = pci_get_drvdata(pdev);
274 int i = 0;
275
276 switch (pdev->device) {
277 case PCI_DEVICE_ID_CLASSIC_4:
278 case PCI_DEVICE_ID_CLASSIC_4_422:
279 case PCI_DEVICE_ID_CLASSIC_8:
280 case PCI_DEVICE_ID_CLASSIC_8_422:
281
282 outb(0x0, brd->iobase + 0x4c);
283 break;
284 default:
285 break;
286 }
287
288 jsm_remove_uart_port(brd);
289
290 free_irq(brd->irq, brd);
291 iounmap(brd->re_map_membase);
292
293
294 for (i = 0; i < brd->maxports; i++) {
295 if (brd->channels[i]) {
296 kfree(brd->channels[i]->ch_rqueue);
297 kfree(brd->channels[i]->ch_equeue);
298 kfree(brd->channels[i]);
299 }
300 }
301
302 pci_release_regions(pdev);
303 pci_disable_device(pdev);
304 kfree(brd);
305}
306
307static struct pci_device_id jsm_pci_tbl[] = {
308 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9), 0, 0, 0 },
309 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9PRI), 0, 0, 1 },
310 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45), 0, 0, 2 },
311 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45PRI), 0, 0, 3 },
312 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_4_IBM), 0, 0, 4 },
313 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_NEO_8), 0, 0, 5 },
314 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_4), 0, 0, 6 },
315 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_1_422), 0, 0, 7 },
316 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_1_422_485), 0, 0, 8 },
317 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2_422_485), 0, 0, 9 },
318 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_8), 0, 0, 10 },
319 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_4), 0, 0, 11 },
320 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_4RJ45), 0, 0, 12 },
321 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_8RJ45), 0, 0, 13 },
322 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_4), 0, 0, 14 },
323 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_4_422), 0, 0, 15 },
324 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_8), 0, 0, 16 },
325 { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_8_422), 0, 0, 17 },
326 { 0, }
327};
328MODULE_DEVICE_TABLE(pci, jsm_pci_tbl);
329
330static struct pci_driver jsm_driver = {
331 .name = JSM_DRIVER_NAME,
332 .id_table = jsm_pci_tbl,
333 .probe = jsm_probe_one,
334 .remove = jsm_remove_one,
335 .err_handler = &jsm_err_handler,
336};
337
338static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev,
339 pci_channel_state_t state)
340{
341 struct jsm_board *brd = pci_get_drvdata(pdev);
342
343 jsm_remove_uart_port(brd);
344
345 return PCI_ERS_RESULT_NEED_RESET;
346}
347
348static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev)
349{
350 int rc;
351
352 rc = pci_enable_device(pdev);
353
354 if (rc)
355 return PCI_ERS_RESULT_DISCONNECT;
356
357 pci_set_master(pdev);
358
359 return PCI_ERS_RESULT_RECOVERED;
360}
361
362static void jsm_io_resume(struct pci_dev *pdev)
363{
364 struct jsm_board *brd = pci_get_drvdata(pdev);
365
366 pci_restore_state(pdev);
367 pci_save_state(pdev);
368
369 jsm_uart_port_init(brd);
370}
371
372static int __init jsm_init_module(void)
373{
374 int rc;
375
376 rc = uart_register_driver(&jsm_uart_driver);
377 if (!rc) {
378 rc = pci_register_driver(&jsm_driver);
379 if (rc)
380 uart_unregister_driver(&jsm_uart_driver);
381 }
382 return rc;
383}
384
385static void __exit jsm_exit_module(void)
386{
387 pci_unregister_driver(&jsm_driver);
388 uart_unregister_driver(&jsm_uart_driver);
389}
390
391module_init(jsm_init_module);
392module_exit(jsm_exit_module);
393
