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