serial.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:4k
- /*
- * Serial Device Initialisation for LASI/ASP/WAX/DINO
- *
- * (c) Copyright 2000 The Puffin Group Inc.
- * (c) Copyright 2000-2001 Helge Deller <deller@gmx.de>
- *
- * 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 of the License, or
- * (at your option) any later version.
- *
- */
- #include <linux/config.h>
- #include <linux/errno.h>
- #include <linux/init.h>
- #include <linux/signal.h>
- #include <linux/types.h>
- #include <linux/sched.h>
- #include <linux/interrupt.h>
- #include <linux/kernel_stat.h>
- #include <linux/ioport.h>
- #include <linux/timex.h>
- #include <linux/module.h>
- #include <linux/serial.h>
- #include <linux/slab.h>
- #include <asm/serial.h>
- #include <asm/io.h>
- #include <asm/hardware.h>
- #include <asm/gsc.h>
- #include "busdevice.h"
- static void setup_parisc_serial(struct serial_struct *serial,
- unsigned long address, int irq, int line)
- {
- memset(serial, 0, sizeof(struct serial_struct));
- /* autoconfig() sets state->type. This sets info->type */
- serial->type = PORT_16550A;
- serial->line = line;
- serial->iomem_base = ioremap(address, 0x8);
- serial->irq = irq;
- serial->io_type = SERIAL_IO_MEM; /* define access method */
- serial->flags = 0;
- serial->xmit_fifo_size = 16;
- serial->custom_divisor = 0;
- serial->baud_base = LASI_BASE_BAUD;
- }
- static int __init
- serial_init_chip(struct parisc_device *dev)
- {
- static int serial_line_nr;
- unsigned long address;
- struct serial_struct *serial;
- if (!dev->irq) {
- if (dev->parent->id.hw_type != HPHW_IOA) {
- printk(KERN_INFO "Serial: device 0x%lx not configured.n"
- "Enable support for Wax, Lasi, Asp or Dino.n", dev->hpa);
- }
- return -ENODEV;
- }
- serial = kmalloc(sizeof(*serial), GFP_KERNEL);
- if (!serial)
- return -ENOMEM;
- address = dev->hpa;
- if (dev->id.sversion != 0x8d) {
- address += 0x800;
- }
- setup_parisc_serial(serial, address, dev->irq, serial_line_nr++);
- if (register_serial(serial) < 0) {
- printk(KERN_WARNING "register_serial returned errorn");
- kfree(serial);
- return -ENODEV;
- }
- return 0;
- }
- static struct parisc_device_id serial_tbl[] = {
- { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00075 },
- { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008c },
- { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008d },
- { 0 }
- };
- /* Hack. Dino's serial port will get listed first on some machines.
- * So we register this driver first which knows about Lasi's serial port.
- * This needs to get fixed properly somehow.
- */
- static struct parisc_device_id serial1_tbl[] = {
- { HPHW_FIO, HVERSION_REV_ANY_ID, 0x03B, 0x0008C }, /* C1xx/C1xxL */
- { HPHW_FIO, HVERSION_REV_ANY_ID, 0x03C, 0x0008C }, /* B132L */
- { HPHW_FIO, HVERSION_REV_ANY_ID, 0x03D, 0x0008C }, /* B160L */
- { HPHW_FIO, HVERSION_REV_ANY_ID, 0x03E, 0x0008C }, /* B132L+ */
- { HPHW_FIO, HVERSION_REV_ANY_ID, 0x03F, 0x0008C }, /* B180L+ */
- { HPHW_FIO, HVERSION_REV_ANY_ID, 0x046, 0x0008C }, /* Rocky2 120 */
- { HPHW_FIO, HVERSION_REV_ANY_ID, 0x047, 0x0008C }, /* Rocky2 150 */
- { HPHW_FIO, HVERSION_REV_ANY_ID, 0x04E, 0x0008C }, /* Kiji L2 132 */
- { HPHW_FIO, HVERSION_REV_ANY_ID, 0x056, 0x0008C }, /* Raven+ */
- { 0 }
- };
- MODULE_DEVICE_TABLE(parisc, serial_tbl);
- static struct parisc_driver serial1_driver = {
- name: "Serial RS232",
- id_table: serial1_tbl,
- probe: serial_init_chip,
- };
- static struct parisc_driver serial_driver = {
- name: "Serial RS232",
- id_table: serial_tbl,
- probe: serial_init_chip,
- };
- void __init probe_serial_gsc(void)
- {
- register_parisc_driver(&serial1_driver);
- register_parisc_driver(&serial_driver);
- }