280 строки
6.9 KiB
C
280 строки
6.9 KiB
C
/************************************************************************
|
|
* Copyright 2003 Digi International (www.digi.com)
|
|
*
|
|
* Copyright (C) 2004 IBM Corporation. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
|
|
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
* PURPOSE. See the GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 * Temple Place - Suite 330, Boston,
|
|
* MA 02111-1307, USA.
|
|
*
|
|
* Contact Information:
|
|
* Scott H Kilau <Scott_Kilau@digi.com>
|
|
* Wendy Xiong <wendyx@us.ibm.com>
|
|
*
|
|
*
|
|
***********************************************************************/
|
|
#include <linux/module.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include "jsm.h"
|
|
|
|
MODULE_AUTHOR("Digi International, http://www.digi.com");
|
|
MODULE_DESCRIPTION("Driver for the Digi International "
|
|
"Neo PCI based product line");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_SUPPORTED_DEVICE("jsm");
|
|
|
|
#define JSM_DRIVER_NAME "jsm"
|
|
#define NR_PORTS 32
|
|
#define JSM_MINOR_START 0
|
|
|
|
struct uart_driver jsm_uart_driver = {
|
|
.owner = THIS_MODULE,
|
|
.driver_name = JSM_DRIVER_NAME,
|
|
.dev_name = "ttyn",
|
|
.major = 0,
|
|
.minor = JSM_MINOR_START,
|
|
.nr = NR_PORTS,
|
|
};
|
|
|
|
static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev,
|
|
pci_channel_state_t state);
|
|
static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev);
|
|
static void jsm_io_resume(struct pci_dev *pdev);
|
|
|
|
static struct pci_error_handlers jsm_err_handler = {
|
|
.error_detected = jsm_io_error_detected,
|
|
.slot_reset = jsm_io_slot_reset,
|
|
.resume = jsm_io_resume,
|
|
};
|
|
|
|
int jsm_debug;
|
|
module_param(jsm_debug, int, 0);
|
|
MODULE_PARM_DESC(jsm_debug, "Driver debugging level");
|
|
|
|
static int __devinit jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
|
|
{
|
|
int rc = 0;
|
|
struct jsm_board *brd;
|
|
static int adapter_count = 0;
|
|
|
|
rc = pci_enable_device(pdev);
|
|
if (rc) {
|
|
dev_err(&pdev->dev, "Device enable FAILED\n");
|
|
goto out;
|
|
}
|
|
|
|
rc = pci_request_regions(pdev, "jsm");
|
|
if (rc) {
|
|
dev_err(&pdev->dev, "pci_request_region FAILED\n");
|
|
goto out_disable_device;
|
|
}
|
|
|
|
brd = kzalloc(sizeof(struct jsm_board), GFP_KERNEL);
|
|
if (!brd) {
|
|
dev_err(&pdev->dev,
|
|
"memory allocation for board structure failed\n");
|
|
rc = -ENOMEM;
|
|
goto out_release_regions;
|
|
}
|
|
|
|
/* store the info for the board we've found */
|
|
brd->boardnum = adapter_count++;
|
|
brd->pci_dev = pdev;
|
|
if (pdev->device == PCIE_DEVICE_ID_NEO_4_IBM)
|
|
brd->maxports = 4;
|
|
else if (pdev->device == PCI_DEVICE_ID_DIGI_NEO_8)
|
|
brd->maxports = 8;
|
|
else
|
|
brd->maxports = 2;
|
|
|
|
spin_lock_init(&brd->bd_intr_lock);
|
|
|
|
/* store which revision we have */
|
|
brd->rev = pdev->revision;
|
|
|
|
brd->irq = pdev->irq;
|
|
|
|
jsm_printk(INIT, INFO, &brd->pci_dev,
|
|
"jsm_found_board - NEO adapter\n");
|
|
|
|
/* get the PCI Base Address Registers */
|
|
brd->membase = pci_resource_start(pdev, 0);
|
|
brd->membase_end = pci_resource_end(pdev, 0);
|
|
|
|
if (brd->membase & 1)
|
|
brd->membase &= ~3;
|
|
else
|
|
brd->membase &= ~15;
|
|
|
|
/* Assign the board_ops struct */
|
|
brd->bd_ops = &jsm_neo_ops;
|
|
|
|
brd->bd_uart_offset = 0x200;
|
|
brd->bd_dividend = 921600;
|
|
|
|
brd->re_map_membase = ioremap(brd->membase, pci_resource_len(pdev, 0));
|
|
if (!brd->re_map_membase) {
|
|
dev_err(&pdev->dev,
|
|
"card has no PCI Memory resources, "
|
|
"failing board.\n");
|
|
rc = -ENOMEM;
|
|
goto out_kfree_brd;
|
|
}
|
|
|
|
rc = request_irq(brd->irq, brd->bd_ops->intr,
|
|
IRQF_SHARED, "JSM", brd);
|
|
if (rc) {
|
|
printk(KERN_WARNING "Failed to hook IRQ %d\n",brd->irq);
|
|
goto out_iounmap;
|
|
}
|
|
|
|
rc = jsm_tty_init(brd);
|
|
if (rc < 0) {
|
|
dev_err(&pdev->dev, "Can't init tty devices (%d)\n", rc);
|
|
rc = -ENXIO;
|
|
goto out_free_irq;
|
|
}
|
|
|
|
rc = jsm_uart_port_init(brd);
|
|
if (rc < 0) {
|
|
/* XXX: leaking all resources from jsm_tty_init here! */
|
|
dev_err(&pdev->dev, "Can't init uart port (%d)\n", rc);
|
|
rc = -ENXIO;
|
|
goto out_free_irq;
|
|
}
|
|
|
|
/* Log the information about the board */
|
|
dev_info(&pdev->dev, "board %d: Digi Neo (rev %d), irq %d\n",
|
|
adapter_count, brd->rev, brd->irq);
|
|
|
|
pci_set_drvdata(pdev, brd);
|
|
pci_save_state(pdev);
|
|
|
|
return 0;
|
|
out_free_irq:
|
|
jsm_remove_uart_port(brd);
|
|
free_irq(brd->irq, brd);
|
|
out_iounmap:
|
|
iounmap(brd->re_map_membase);
|
|
out_kfree_brd:
|
|
kfree(brd);
|
|
out_release_regions:
|
|
pci_release_regions(pdev);
|
|
out_disable_device:
|
|
pci_disable_device(pdev);
|
|
out:
|
|
return rc;
|
|
}
|
|
|
|
static void __devexit jsm_remove_one(struct pci_dev *pdev)
|
|
{
|
|
struct jsm_board *brd = pci_get_drvdata(pdev);
|
|
int i = 0;
|
|
|
|
jsm_remove_uart_port(brd);
|
|
|
|
free_irq(brd->irq, brd);
|
|
iounmap(brd->re_map_membase);
|
|
|
|
/* Free all allocated channels structs */
|
|
for (i = 0; i < brd->maxports; i++) {
|
|
if (brd->channels[i]) {
|
|
kfree(brd->channels[i]->ch_rqueue);
|
|
kfree(brd->channels[i]->ch_equeue);
|
|
kfree(brd->channels[i]);
|
|
}
|
|
}
|
|
|
|
pci_release_regions(pdev);
|
|
pci_disable_device(pdev);
|
|
kfree(brd);
|
|
}
|
|
|
|
static struct pci_device_id jsm_pci_tbl[] = {
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9), 0, 0, 0 },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9PRI), 0, 0, 1 },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45), 0, 0, 2 },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45PRI), 0, 0, 3 },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_4_IBM), 0, 0, 4 },
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_DIGI_NEO_8), 0, 0, 5 },
|
|
{ 0, }
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, jsm_pci_tbl);
|
|
|
|
static struct pci_driver jsm_driver = {
|
|
.name = "jsm",
|
|
.id_table = jsm_pci_tbl,
|
|
.probe = jsm_probe_one,
|
|
.remove = __devexit_p(jsm_remove_one),
|
|
.err_handler = &jsm_err_handler,
|
|
};
|
|
|
|
static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev,
|
|
pci_channel_state_t state)
|
|
{
|
|
struct jsm_board *brd = pci_get_drvdata(pdev);
|
|
|
|
jsm_remove_uart_port(brd);
|
|
|
|
return PCI_ERS_RESULT_NEED_RESET;
|
|
}
|
|
|
|
static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev)
|
|
{
|
|
int rc;
|
|
|
|
rc = pci_enable_device(pdev);
|
|
|
|
if (rc)
|
|
return PCI_ERS_RESULT_DISCONNECT;
|
|
|
|
pci_set_master(pdev);
|
|
|
|
return PCI_ERS_RESULT_RECOVERED;
|
|
}
|
|
|
|
static void jsm_io_resume(struct pci_dev *pdev)
|
|
{
|
|
struct jsm_board *brd = pci_get_drvdata(pdev);
|
|
|
|
pci_restore_state(pdev);
|
|
pci_save_state(pdev);
|
|
|
|
jsm_uart_port_init(brd);
|
|
}
|
|
|
|
static int __init jsm_init_module(void)
|
|
{
|
|
int rc;
|
|
|
|
rc = uart_register_driver(&jsm_uart_driver);
|
|
if (!rc) {
|
|
rc = pci_register_driver(&jsm_driver);
|
|
if (rc)
|
|
uart_unregister_driver(&jsm_uart_driver);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static void __exit jsm_exit_module(void)
|
|
{
|
|
pci_unregister_driver(&jsm_driver);
|
|
uart_unregister_driver(&jsm_uart_driver);
|
|
}
|
|
|
|
module_init(jsm_init_module);
|
|
module_exit(jsm_exit_module);
|