1/* 2 * Serial Device Initialisation for Lasi/Asp/Wax/Dino 3 * 4 * (c) Copyright Matthew Wilcox <willy@debian.org> 2001-2002 5 * 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 of the License, or 9 * (at your option) any later version. 10 */ 11 12#include <linux/errno.h> 13#include <linux/init.h> 14#include <linux/interrupt.h> 15#include <linux/ioport.h> 16#include <linux/module.h> 17#include <linux/serial_core.h> 18#include <linux/signal.h> 19#include <linux/slab.h> 20#include <linux/types.h> 21 22#include <asm/hardware.h> 23#include <asm/parisc-device.h> 24#include <asm/io.h> 25 26#include "8250.h" 27 28static int __init 29serial_init_chip(struct parisc_device *dev) 30{ 31 struct uart_port port; 32 unsigned long address; 33 int err; 34 35 if (!dev->irq) { 36 /* We find some unattached serial ports by walking native 37 * busses. These should be silently ignored. Otherwise, 38 * what we have here is a missing parent device, so tell 39 * the user what they're missing. 40 */ 41 if (parisc_parent(dev)->id.hw_type != HPHW_IOA) { 42 printk(KERN_INFO "Serial: device 0x%lx not configured.\n" 43 "Enable support for Wax, Lasi, Asp or Dino.\n", 44 dev->hpa.start); 45 } 46 return -ENODEV; 47 } 48 49 address = dev->hpa.start; 50 if (dev->id.sversion != 0x8d) { 51 address += 0x800; 52 } 53 54 memset(&port, 0, sizeof(port)); 55 port.iotype = UPIO_MEM; 56 /* 7.272727MHz on Lasi. Assumed the same for Dino, Wax and Timi. */ 57 port.uartclk = 7272727; 58 port.mapbase = address; 59 port.membase = ioremap_nocache(address, 16); 60 port.irq = dev->irq; 61 port.flags = UPF_BOOT_AUTOCONF; 62 port.dev = &dev->dev; 63 64 err = serial8250_register_port(&port); 65 if (err < 0) { 66 printk(KERN_WARNING "serial8250_register_port returned error %d\n", err); 67 iounmap(port.membase); 68 return err; 69 } 70 71 return 0; 72} 73 74static struct parisc_device_id serial_tbl[] = { 75 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00075 }, 76 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008c }, 77 { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008d }, 78 { 0 } 79}; 80 81/* Hack. Some machines have SERIAL_0 attached to Lasi and SERIAL_1 82 * attached to Dino. Unfortunately, Dino appears before Lasi in the device 83 * tree. To ensure that ttyS0 == SERIAL_0, we register two drivers; one 84 * which only knows about Lasi and then a second which will find all the 85 * other serial ports. HPUX ignores this problem. 86 */ 87static struct parisc_device_id lasi_tbl[] = { 88 { HPHW_FIO, HVERSION_REV_ANY_ID, 0x03B, 0x0008C }, /* C1xx/C1xxL */ 89 { HPHW_FIO, HVERSION_REV_ANY_ID, 0x03C, 0x0008C }, /* B132L */ 90 { HPHW_FIO, HVERSION_REV_ANY_ID, 0x03D, 0x0008C }, /* B160L */ 91 { HPHW_FIO, HVERSION_REV_ANY_ID, 0x03E, 0x0008C }, /* B132L+ */ 92 { HPHW_FIO, HVERSION_REV_ANY_ID, 0x03F, 0x0008C }, /* B180L+ */ 93 { HPHW_FIO, HVERSION_REV_ANY_ID, 0x046, 0x0008C }, /* Rocky2 120 */ 94 { HPHW_FIO, HVERSION_REV_ANY_ID, 0x047, 0x0008C }, /* Rocky2 150 */ 95 { HPHW_FIO, HVERSION_REV_ANY_ID, 0x04E, 0x0008C }, /* Kiji L2 132 */ 96 { HPHW_FIO, HVERSION_REV_ANY_ID, 0x056, 0x0008C }, /* Raven+ */ 97 { 0 } 98}; 99 100 101MODULE_DEVICE_TABLE(parisc, serial_tbl); 102 103static struct parisc_driver lasi_driver = { 104 .name = "serial_1", 105 .id_table = lasi_tbl, 106 .probe = serial_init_chip, 107}; 108 109static struct parisc_driver serial_driver = { 110 .name = "serial", 111 .id_table = serial_tbl, 112 .probe = serial_init_chip, 113}; 114 115int __init probe_serial_gsc(void) 116{ 117 register_parisc_driver(&lasi_driver); 118 register_parisc_driver(&serial_driver); 119 return 0; 120} 121 122module_init(probe_serial_gsc); 123