// SPDX-License-Identifier: GPL-2.0-or-later/* *	ASP Device Driver * *	(c) Copyright 2000 The Puffin Group Inc. * *	(c) 2000-2023 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);} /* 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 const struct parisc_device_id asp_tbl[] __initconst = {	{ HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00070 },	{ 0, }};MODULE_DEVICE_TABLE(parisc, asp_tbl); static struct parisc_driver asp_driver __refdata = {	.name =		"asp",	.id_table =	asp_tbl,	.probe =	asp_init_chip,}; static int __init asp_init(void){	return register_parisc_driver(&asp_driver);}arch_initcall(asp_init);