| /* |
| * Serial Device Initialisation for Lasi/Asp/Wax/Dino |
| * |
| * (c) Copyright Matthew Wilcox <willy@debian.org> 2001-2002 |
| * |
| * 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/errno.h> |
| #include <linux/init.h> |
| #include <linux/interrupt.h> |
| #include <linux/ioport.h> |
| #include <linux/module.h> |
| #include <linux/serial_core.h> |
| #include <linux/signal.h> |
| #include <linux/types.h> |
| |
| #include <asm/hardware.h> |
| #include <asm/parisc-device.h> |
| #include <asm/io.h> |
| |
| #include "8250.h" |
| |
| static int __init serial_init_chip(struct parisc_device *dev) |
| { |
| struct uart_8250_port uart; |
| unsigned long address; |
| int err; |
| |
| #if defined(CONFIG_64BIT) && defined(CONFIG_IOSAPIC) |
| if (!dev->irq && (dev->id.sversion == 0xad)) |
| dev->irq = iosapic_serial_irq(dev); |
| #endif |
| |
| if (!dev->irq) { |
| /* We find some unattached serial ports by walking native |
| * busses. These should be silently ignored. Otherwise, |
| * what we have here is a missing parent device, so tell |
| * the user what they're missing. |
| */ |
| if (parisc_parent(dev)->id.hw_type != HPHW_IOA) |
| dev_info(&dev->dev, |
| "Serial: device 0x%llx not configured.\n" |
| "Enable support for Wax, Lasi, Asp or Dino.\n", |
| (unsigned long long)dev->hpa.start); |
| return -ENODEV; |
| } |
| |
| address = dev->hpa.start; |
| if (dev->id.sversion != 0x8d) |
| address += 0x800; |
| |
| memset(&uart, 0, sizeof(uart)); |
| uart.port.iotype = UPIO_MEM; |
| /* 7.272727MHz on Lasi. Assumed the same for Dino, Wax and Timi. */ |
| uart.port.uartclk = (dev->id.sversion != 0xad) ? |
| 7272727 : 1843200; |
| uart.port.mapbase = address; |
| uart.port.membase = ioremap_nocache(address, 16); |
| if (!uart.port.membase) { |
| dev_warn(&dev->dev, "Failed to map memory\n"); |
| return -ENOMEM; |
| } |
| uart.port.irq = dev->irq; |
| uart.port.flags = UPF_BOOT_AUTOCONF; |
| uart.port.dev = &dev->dev; |
| |
| err = serial8250_register_8250_port(&uart); |
| if (err < 0) { |
| dev_warn(&dev->dev, |
| "serial8250_register_8250_port returned error %d\n", |
| err); |
| iounmap(uart.port.membase); |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static const struct parisc_device_id serial_tbl[] __initconst = { |
| { 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 }, |
| { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x000ad }, |
| { 0 } |
| }; |
| |
| /* Hack. Some machines have SERIAL_0 attached to Lasi and SERIAL_1 |
| * attached to Dino. Unfortunately, Dino appears before Lasi in the device |
| * tree. To ensure that ttyS0 == SERIAL_0, we register two drivers; one |
| * which only knows about Lasi and then a second which will find all the |
| * other serial ports. HPUX ignores this problem. |
| */ |
| static const struct parisc_device_id lasi_tbl[] __initconst = { |
| { 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 lasi_driver __refdata = { |
| .name = "serial_1", |
| .id_table = lasi_tbl, |
| .probe = serial_init_chip, |
| }; |
| |
| static struct parisc_driver serial_driver __refdata = { |
| .name = "serial", |
| .id_table = serial_tbl, |
| .probe = serial_init_chip, |
| }; |
| |
| static int __init probe_serial_gsc(void) |
| { |
| register_parisc_driver(&lasi_driver); |
| register_parisc_driver(&serial_driver); |
| return 0; |
| } |
| |
| module_init(probe_serial_gsc); |
| |
| MODULE_LICENSE("GPL"); |