From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/tty/serial/8250/8250_gsc.c | 129 ++++++++++++++++++++++++++++++ 1 file changed, 129 insertions(+) create mode 100644 kernel/drivers/tty/serial/8250/8250_gsc.c (limited to 'kernel/drivers/tty/serial/8250/8250_gsc.c') diff --git a/kernel/drivers/tty/serial/8250/8250_gsc.c b/kernel/drivers/tty/serial/8250/8250_gsc.c new file mode 100644 index 000000000..2e3ea1a70 --- /dev/null +++ b/kernel/drivers/tty/serial/8250/8250_gsc.c @@ -0,0 +1,129 @@ +/* + * Serial Device Initialisation for Lasi/Asp/Wax/Dino + * + * (c) Copyright Matthew Wilcox 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 +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "8250.h" + +static int __init serial_init_chip(struct parisc_device *dev) +{ + struct uart_8250_port uart; + unsigned long address; + int err; + +#ifdef CONFIG_64BIT + 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) + printk(KERN_INFO + "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); + 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) { + printk(KERN_WARNING + "serial8250_register_8250_port returned error %d\n", err); + iounmap(uart.port.membase); + return err; + } + + 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 }, + { 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 struct parisc_device_id lasi_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 lasi_driver = { + .name = "serial_1", + .id_table = lasi_tbl, + .probe = serial_init_chip, +}; + +static struct parisc_driver serial_driver = { + .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"); -- cgit 1.2.3-korg