1 /************************************************************************
2 * Copyright 2003 Digi International (www.digi.com)
4 * Copyright (C) 2004 IBM Corporation. All rights reserved.
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)
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.
16 * Contact Information:
17 * Scott H Kilau <Scott_Kilau@digi.com>
18 * Wendy Xiong <wendyx@us.ibm.com>
21 ***********************************************************************/
22 #include <linux/module.h>
23 #include <linux/pci.h>
24 #include <linux/slab.h>
28 MODULE_AUTHOR("Digi International, http://www.digi.com");
29 MODULE_DESCRIPTION("Driver for the Digi International Neo and Classic PCI based product line");
30 MODULE_LICENSE("GPL");
31 MODULE_SUPPORTED_DEVICE("jsm");
33 #define JSM_DRIVER_NAME "jsm"
35 #define JSM_MINOR_START 0
37 struct uart_driver jsm_uart_driver = {
39 .driver_name = JSM_DRIVER_NAME,
42 .minor = JSM_MINOR_START,
46 static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev,
47 pci_channel_state_t state);
48 static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev);
49 static void jsm_io_resume(struct pci_dev *pdev);
51 static 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,
58 module_param(jsm_debug, int, 0);
59 MODULE_PARM_DESC(jsm_debug, "Driver debugging level");
61 static int jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
64 struct jsm_board *brd;
65 static int adapter_count;
67 rc = pci_enable_device(pdev);
69 dev_err(&pdev->dev, "Device enable FAILED\n");
73 rc = pci_request_regions(pdev, "jsm");
75 dev_err(&pdev->dev, "pci_request_region FAILED\n");
76 goto out_disable_device;
79 brd = kzalloc(sizeof(*brd), GFP_KERNEL);
82 goto out_release_regions;
85 /* store the info for the board we've found */
86 brd->boardnum = adapter_count++;
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:
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:
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:
120 spin_lock_init(&brd->bd_intr_lock);
122 /* store which revision we have */
123 brd->rev = pdev->revision;
125 brd->irq = pdev->irq;
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:
133 jsm_dbg(INIT, &brd->pci_dev,
134 "jsm_found_board - Classic adapter\n");
137 * For PCI ClassicBoards
138 * PCI Local Address (.i.e. "resource" number) space
139 * 0 PLX Memory Mapped Config
140 * 1 PLX I/O Mapped Config
141 * 2 I/O Mapped UARTs and Status
142 * 3 Memory Mapped VPD
143 * 4 Memory Mapped UARTs and Status
146 /* Get the PCI Base Address Registers */
147 brd->membase = pci_resource_start(pdev, 4);
148 brd->membase_end = pci_resource_end(pdev, 4);
150 if (brd->membase & 0x1)
151 brd->membase &= ~0x3;
153 brd->membase &= ~0xF;
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;
159 /* Assign the board_ops struct */
160 brd->bd_ops = &jsm_cls_ops;
162 brd->bd_uart_offset = 0x8;
163 brd->bd_dividend = 921600;
165 brd->re_map_membase = ioremap(brd->membase,
166 pci_resource_len(pdev, 4));
167 if (!brd->re_map_membase) {
169 "Card has no PCI Memory resources, failing board.\n");
175 * Enable Local Interrupt 1 (0x1),
176 * Local Interrupt 1 Polarity Active high (0x2),
177 * Enable PCI interrupt (0x43)
179 outb(0x43, brd->iobase + 0x4c);
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:
196 jsm_dbg(INIT, &brd->pci_dev, "jsm_found_board - NEO adapter\n");
198 /* get the PCI Base Address Registers */
199 brd->membase = pci_resource_start(pdev, 0);
200 brd->membase_end = pci_resource_end(pdev, 0);
202 if (brd->membase & 1)
203 brd->membase &= ~0x3;
205 brd->membase &= ~0xF;
207 /* Assign the board_ops struct */
208 brd->bd_ops = &jsm_neo_ops;
210 brd->bd_uart_offset = 0x200;
211 brd->bd_dividend = 921600;
213 brd->re_map_membase = ioremap(brd->membase,
214 pci_resource_len(pdev, 0));
215 if (!brd->re_map_membase) {
217 "Card has no PCI Memory resources, failing board.\n");
227 rc = request_irq(brd->irq, brd->bd_ops->intr, IRQF_SHARED, "JSM", brd);
229 dev_warn(&pdev->dev, "Failed to hook IRQ %d\n", brd->irq);
233 rc = jsm_tty_init(brd);
235 dev_err(&pdev->dev, "Can't init tty devices (%d)\n", rc);
240 rc = jsm_uart_port_init(brd);
242 /* XXX: leaking all resources from jsm_tty_init here! */
243 dev_err(&pdev->dev, "Can't init uart port (%d)\n", rc);
248 /* Log the information about the board */
249 dev_info(&pdev->dev, "board %d: Digi Classic/Neo (rev %d), irq %d\n",
250 adapter_count, brd->rev, brd->irq);
252 pci_set_drvdata(pdev, brd);
253 pci_save_state(pdev);
257 jsm_remove_uart_port(brd);
258 free_irq(brd->irq, brd);
260 iounmap(brd->re_map_membase);
264 pci_release_regions(pdev);
266 pci_disable_device(pdev);
271 static void jsm_remove_one(struct pci_dev *pdev)
273 struct jsm_board *brd = pci_get_drvdata(pdev);
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 /* Tell card not to interrupt anymore. */
282 outb(0x0, brd->iobase + 0x4c);
288 jsm_remove_uart_port(brd);
290 free_irq(brd->irq, brd);
291 iounmap(brd->re_map_membase);
293 /* Free all allocated channels structs */
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]);
302 pci_release_regions(pdev);
303 pci_disable_device(pdev);
307 static 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 },
328 MODULE_DEVICE_TABLE(pci, jsm_pci_tbl);
330 static struct pci_driver jsm_driver = {
332 .id_table = jsm_pci_tbl,
333 .probe = jsm_probe_one,
334 .remove = jsm_remove_one,
335 .err_handler = &jsm_err_handler,
338 static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev,
339 pci_channel_state_t state)
341 struct jsm_board *brd = pci_get_drvdata(pdev);
343 jsm_remove_uart_port(brd);
345 return PCI_ERS_RESULT_NEED_RESET;
348 static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev)
352 rc = pci_enable_device(pdev);
355 return PCI_ERS_RESULT_DISCONNECT;
357 pci_set_master(pdev);
359 return PCI_ERS_RESULT_RECOVERED;
362 static void jsm_io_resume(struct pci_dev *pdev)
364 struct jsm_board *brd = pci_get_drvdata(pdev);
366 pci_restore_state(pdev);
367 pci_save_state(pdev);
369 jsm_uart_port_init(brd);
372 static int __init jsm_init_module(void)
376 rc = uart_register_driver(&jsm_uart_driver);
378 rc = pci_register_driver(&jsm_driver);
380 uart_unregister_driver(&jsm_uart_driver);
385 static void __exit jsm_exit_module(void)
387 pci_unregister_driver(&jsm_driver);
388 uart_unregister_driver(&jsm_uart_driver);
391 module_init(jsm_init_module);
392 module_exit(jsm_exit_module);