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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5076c15862
Addresses in F-space must be accessed uncached on most parisc machines. Signed-off-by: Helge Deller <deller@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
122 lines
3.5 KiB
C
122 lines
3.5 KiB
C
/*
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* Serial Device Initialisation for Lasi/Asp/Wax/Dino
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*
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* (c) Copyright Matthew Wilcox <willy@debian.org> 2001-2002
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/ioport.h>
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#include <linux/module.h>
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#include <linux/serial_core.h>
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#include <linux/signal.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#include <asm/hardware.h>
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#include <asm/parisc-device.h>
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#include <asm/io.h>
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#include <asm/serial.h> /* for LASI_BASE_BAUD */
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#include "8250.h"
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static int __init
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serial_init_chip(struct parisc_device *dev)
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{
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struct uart_port port;
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unsigned long address;
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int err;
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if (!dev->irq) {
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/* We find some unattached serial ports by walking native
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* busses. These should be silently ignored. Otherwise,
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* what we have here is a missing parent device, so tell
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* the user what they're missing.
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*/
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if (parisc_parent(dev)->id.hw_type != HPHW_IOA) {
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printk(KERN_INFO "Serial: device 0x%lx not configured.\n"
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"Enable support for Wax, Lasi, Asp or Dino.\n",
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dev->hpa.start);
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}
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return -ENODEV;
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}
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address = dev->hpa.start;
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if (dev->id.sversion != 0x8d) {
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address += 0x800;
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}
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memset(&port, 0, sizeof(port));
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port.iotype = UPIO_MEM;
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port.uartclk = LASI_BASE_BAUD * 16;
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port.mapbase = address;
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port.membase = ioremap_nocache(address, 16);
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port.irq = dev->irq;
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port.flags = UPF_BOOT_AUTOCONF;
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port.dev = &dev->dev;
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err = serial8250_register_port(&port);
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if (err < 0) {
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printk(KERN_WARNING "serial8250_register_port returned error %d\n", err);
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return err;
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}
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return 0;
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}
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static struct parisc_device_id serial_tbl[] = {
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{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00075 },
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{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008c },
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{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008d },
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{ 0 }
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};
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/* Hack. Some machines have SERIAL_0 attached to Lasi and SERIAL_1
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* attached to Dino. Unfortunately, Dino appears before Lasi in the device
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* tree. To ensure that ttyS0 == SERIAL_0, we register two drivers; one
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* which only knows about Lasi and then a second which will find all the
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* other serial ports. HPUX ignores this problem.
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*/
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static struct parisc_device_id lasi_tbl[] = {
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{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x03B, 0x0008C }, /* C1xx/C1xxL */
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{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x03C, 0x0008C }, /* B132L */
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{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x03D, 0x0008C }, /* B160L */
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{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x03E, 0x0008C }, /* B132L+ */
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{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x03F, 0x0008C }, /* B180L+ */
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{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x046, 0x0008C }, /* Rocky2 120 */
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{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x047, 0x0008C }, /* Rocky2 150 */
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{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x04E, 0x0008C }, /* Kiji L2 132 */
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{ HPHW_FIO, HVERSION_REV_ANY_ID, 0x056, 0x0008C }, /* Raven+ */
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{ 0 }
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};
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MODULE_DEVICE_TABLE(parisc, serial_tbl);
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static struct parisc_driver lasi_driver = {
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.name = "serial_1",
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.id_table = lasi_tbl,
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.probe = serial_init_chip,
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};
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static struct parisc_driver serial_driver = {
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.name = "serial",
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.id_table = serial_tbl,
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.probe = serial_init_chip,
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};
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int __init probe_serial_gsc(void)
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{
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register_parisc_driver(&lasi_driver);
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register_parisc_driver(&serial_driver);
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return 0;
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}
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module_init(probe_serial_gsc);
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