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 * 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,
21 * Contact Information:
22 * Scott H Kilau <Scott_Kilau@digi.com>
23 * Wendy Xiong <wendyx@us.ibm.com>
26 ***********************************************************************/
27 #include <linux/moduleparam.h>
28 #include <linux/pci.h>
29 #include <linux/slab.h>
33 MODULE_AUTHOR("Digi International, http://www.digi.com");
34 MODULE_DESCRIPTION("Driver for the Digi International "
35 "Neo PCI based product line");
36 MODULE_LICENSE("GPL");
37 MODULE_SUPPORTED_DEVICE("jsm");
39 #define JSM_DRIVER_NAME "jsm"
41 #define JSM_MINOR_START 0
43 struct uart_driver jsm_uart_driver = {
45 .driver_name = JSM_DRIVER_NAME,
48 .minor = JSM_MINOR_START,
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);
57 static 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,
64 module_param(jsm_debug, int, 0);
65 MODULE_PARM_DESC(jsm_debug, "Driver debugging level");
67 static int __devinit jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
70 struct jsm_board *brd;
71 static int adapter_count = 0;
73 rc = pci_enable_device(pdev);
75 dev_err(&pdev->dev, "Device enable FAILED\n");
79 rc = pci_request_regions(pdev, "jsm");
81 dev_err(&pdev->dev, "pci_request_region FAILED\n");
82 goto out_disable_device;
85 brd = kzalloc(sizeof(struct jsm_board), GFP_KERNEL);
88 "memory allocation for board structure failed\n");
90 goto out_release_regions;
93 /* store the info for the board we've found */
94 brd->boardnum = adapter_count++;
96 if (pdev->device == PCIE_DEVICE_ID_NEO_4_IBM)
98 else if (pdev->device == PCI_DEVICE_ID_DIGI_NEO_8)
103 spin_lock_init(&brd->bd_intr_lock);
105 /* store which revision we have */
106 brd->rev = pdev->revision;
108 brd->irq = pdev->irq;
110 jsm_printk(INIT, INFO, &brd->pci_dev,
111 "jsm_found_board - NEO adapter\n");
113 /* get the PCI Base Address Registers */
114 brd->membase = pci_resource_start(pdev, 0);
115 brd->membase_end = pci_resource_end(pdev, 0);
117 if (brd->membase & 1)
122 /* Assign the board_ops struct */
123 brd->bd_ops = &jsm_neo_ops;
125 brd->bd_uart_offset = 0x200;
126 brd->bd_dividend = 921600;
128 brd->re_map_membase = ioremap(brd->membase, 0x1000);
129 if (!brd->re_map_membase) {
131 "card has no PCI Memory resources, "
137 rc = request_irq(brd->irq, brd->bd_ops->intr,
138 IRQF_SHARED, "JSM", brd);
140 printk(KERN_WARNING "Failed to hook IRQ %d\n",brd->irq);
144 rc = jsm_tty_init(brd);
146 dev_err(&pdev->dev, "Can't init tty devices (%d)\n", rc);
151 rc = jsm_uart_port_init(brd);
153 /* XXX: leaking all resources from jsm_tty_init here! */
154 dev_err(&pdev->dev, "Can't init uart port (%d)\n", rc);
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);
164 * allocate flip buffer for board.
166 * Okay to malloc with GFP_KERNEL, we are not at interrupt
167 * context, and there are no locks held.
169 brd->flipbuf = kzalloc(MYFLIPLEN, GFP_KERNEL);
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");
178 pci_set_drvdata(pdev, brd);
179 pci_save_state(pdev);
183 jsm_remove_uart_port(brd);
185 jsm_remove_uart_port(brd);
186 free_irq(brd->irq, brd);
188 iounmap(brd->re_map_membase);
192 pci_release_regions(pdev);
194 pci_disable_device(pdev);
199 static void __devexit jsm_remove_one(struct pci_dev *pdev)
201 struct jsm_board *brd = pci_get_drvdata(pdev);
204 jsm_remove_uart_port(brd);
206 free_irq(brd->irq, brd);
207 iounmap(brd->re_map_membase);
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]);
219 pci_release_regions(pdev);
220 pci_disable_device(pdev);
225 static 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 },
234 MODULE_DEVICE_TABLE(pci, jsm_pci_tbl);
236 static struct pci_driver jsm_driver = {
238 .id_table = jsm_pci_tbl,
239 .probe = jsm_probe_one,
240 .remove = __devexit_p(jsm_remove_one),
241 .err_handler = &jsm_err_handler,
244 static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev,
245 pci_channel_state_t state)
247 struct jsm_board *brd = pci_get_drvdata(pdev);
249 jsm_remove_uart_port(brd);
251 return PCI_ERS_RESULT_NEED_RESET;
254 static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev)
258 rc = pci_enable_device(pdev);
261 return PCI_ERS_RESULT_DISCONNECT;
263 pci_set_master(pdev);
265 return PCI_ERS_RESULT_RECOVERED;
268 static void jsm_io_resume(struct pci_dev *pdev)
270 struct jsm_board *brd = pci_get_drvdata(pdev);
272 pci_restore_state(pdev);
274 jsm_uart_port_init(brd);
277 static int __init jsm_init_module(void)
281 rc = uart_register_driver(&jsm_uart_driver);
283 rc = pci_register_driver(&jsm_driver);
285 uart_unregister_driver(&jsm_uart_driver);
290 static void __exit jsm_exit_module(void)
292 pci_unregister_driver(&jsm_driver);
293 uart_unregister_driver(&jsm_uart_driver);
296 module_init(jsm_init_module);
297 module_exit(jsm_exit_module);