132 lines
3.5 KiB
C
132 lines
3.5 KiB
C
/*
|
|
* ASP Device Driver
|
|
*
|
|
* (c) Copyright 2000 The Puffin Group Inc.
|
|
*
|
|
* 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.
|
|
*
|
|
* by Helge Deller <deller@gmx.de>
|
|
*/
|
|
|
|
#include <linux/errno.h>
|
|
#include <linux/init.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/types.h>
|
|
#include <asm/io.h>
|
|
#include <asm/led.h>
|
|
|
|
#include "gsc.h"
|
|
|
|
#define ASP_GSC_IRQ 3 /* hardcoded interrupt for GSC */
|
|
|
|
#define ASP_VER_OFFSET 0x20 /* offset of ASP version */
|
|
|
|
#define ASP_LED_ADDR 0xf0800020
|
|
|
|
#define VIPER_INT_WORD 0xFFFBF088 /* addr of viper interrupt word */
|
|
|
|
static struct gsc_asic asp;
|
|
|
|
static void asp_choose_irq(struct parisc_device *dev, void *ctrl)
|
|
{
|
|
int irq;
|
|
|
|
switch (dev->id.sversion) {
|
|
case 0x71: irq = 9; break; /* SCSI */
|
|
case 0x72: irq = 8; break; /* LAN */
|
|
case 0x73: irq = 1; break; /* HIL */
|
|
case 0x74: irq = 7; break; /* Centronics */
|
|
case 0x75: irq = (dev->hw_path == 4) ? 5 : 6; break; /* RS232 */
|
|
case 0x76: irq = 10; break; /* EISA BA */
|
|
case 0x77: irq = 11; break; /* Graphics1 */
|
|
case 0x7a: irq = 13; break; /* Audio (Bushmaster) */
|
|
case 0x7b: irq = 13; break; /* Audio (Scorpio) */
|
|
case 0x7c: irq = 3; break; /* FW SCSI */
|
|
case 0x7d: irq = 4; break; /* FDDI */
|
|
case 0x7f: irq = 13; break; /* Audio (Outfield) */
|
|
default: return; /* Unknown */
|
|
}
|
|
|
|
gsc_asic_assign_irq(ctrl, irq, &dev->irq);
|
|
|
|
switch (dev->id.sversion) {
|
|
case 0x73: irq = 2; break; /* i8042 High-priority */
|
|
case 0x76: irq = 0; break; /* EISA BA */
|
|
default: return; /* Other */
|
|
}
|
|
|
|
gsc_asic_assign_irq(ctrl, irq, &dev->aux_irq);
|
|
}
|
|
|
|
/* There are two register ranges we're interested in. Interrupt /
|
|
* Status / LED are at 0xf080xxxx and Asp special registers are at
|
|
* 0xf082fxxx. PDC only tells us that Asp is at 0xf082f000, so for
|
|
* the purposes of interrupt handling, we have to tell other bits of
|
|
* the kernel to look at the other registers.
|
|
*/
|
|
#define ASP_INTERRUPT_ADDR 0xf0800000
|
|
|
|
static int __init asp_init_chip(struct parisc_device *dev)
|
|
{
|
|
struct gsc_irq gsc_irq;
|
|
int ret;
|
|
|
|
asp.version = gsc_readb(dev->hpa.start + ASP_VER_OFFSET) & 0xf;
|
|
asp.name = (asp.version == 1) ? "Asp" : "Cutoff";
|
|
asp.hpa = ASP_INTERRUPT_ADDR;
|
|
|
|
printk(KERN_INFO "%s version %d at 0x%lx found.\n",
|
|
asp.name, asp.version, (unsigned long)dev->hpa.start);
|
|
|
|
/* the IRQ ASP should use */
|
|
ret = -EBUSY;
|
|
dev->irq = gsc_claim_irq(&gsc_irq, ASP_GSC_IRQ);
|
|
if (dev->irq < 0) {
|
|
printk(KERN_ERR "%s(): cannot get GSC irq\n", __func__);
|
|
goto out;
|
|
}
|
|
|
|
asp.eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data;
|
|
|
|
ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "asp", &asp);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
/* Program VIPER to interrupt on the ASP irq */
|
|
gsc_writel((1 << (31 - ASP_GSC_IRQ)),VIPER_INT_WORD);
|
|
|
|
/* Done init'ing, register this driver */
|
|
ret = gsc_common_setup(dev, &asp);
|
|
if (ret)
|
|
goto out;
|
|
|
|
gsc_fixup_irqs(dev, &asp, asp_choose_irq);
|
|
/* Mongoose is a sibling of Asp, not a child... */
|
|
gsc_fixup_irqs(parisc_parent(dev), &asp, asp_choose_irq);
|
|
|
|
/* initialize the chassis LEDs */
|
|
#ifdef CONFIG_CHASSIS_LCD_LED
|
|
register_led_driver(DISPLAY_MODEL_OLD_ASP, LED_CMD_REG_NONE,
|
|
ASP_LED_ADDR);
|
|
#endif
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static struct parisc_device_id asp_tbl[] = {
|
|
{ HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00070 },
|
|
{ 0, }
|
|
};
|
|
|
|
struct parisc_driver asp_driver = {
|
|
.name = "asp",
|
|
.id_table = asp_tbl,
|
|
.probe = asp_init_chip,
|
|
};
|