cregit-Linux how code gets into the kernel

Release 4.14 drivers/parisc/asp.c

Directory: drivers/parisc
/*
 *      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/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); }

Contributors

PersonTokensPropCommitsCommitProp
Matthew Wilcox204100.00%3100.00%
Total204100.00%3100.00%

/* 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; }

Contributors

PersonTokensPropCommitsCommitProp
Matthew Wilcox23797.53%457.14%
Alexander Beregalov41.65%114.29%
Adrian Bunk10.41%114.29%
Harvey Harrison10.41%114.29%
Total243100.00%7100.00%

static const struct parisc_device_id asp_tbl[] __initconst = { { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00070 }, { 0, } }; struct parisc_driver asp_driver __refdata = { .name = "asp", .id_table = asp_tbl, .probe = asp_init_chip, };

Overall Contributors

PersonTokensPropCommitsCommitProp
Matthew Wilcox53898.35%763.64%
Alexander Beregalov40.73%19.09%
Helge Deller30.55%19.09%
Harvey Harrison10.18%19.09%
Adrian Bunk10.18%19.09%
Total547100.00%11100.00%
Directory: drivers/parisc
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