/* *  This file contains quirk handling code for ISAPnP devices *  Some devices do not report all their resources, and need to have extra *  resources added. This is most easily accomplished at initialisation time *  when building up the resource structure for the first time. * *  Copyright (c) 2000 Peter Denison <peterd@pnd-pc.demon.co.uk> * *  Heavily based on PCI quirks handling which is * *  Copyright (c) 1999 Martin Mares <mj@suse.cz> */#include <linux/types.h>#include <linux/kernel.h>#include <linux/pci.h>#include <linux/init.h>#include <linux/isapnp.h>#include <linux/string.h>static void __init quirk_awe32_resources(struct pci_dev *dev){	struct isapnp_port *port, *port2, *port3;	struct isapnp_resources *res = dev->sysdata;	/*	 * Unfortunately the isapnp_add_port_resource is too tightly bound	 * into the PnP discovery sequence, and cannot be used. Link in the	 * two extra ports (at offset 0x400 and 0x800 from the one given) by	 * hand.	 */	for ( ; res ; res = res->alt ) {		port2 = isapnp_alloc(sizeof(struct isapnp_port));		port3 = isapnp_alloc(sizeof(struct isapnp_port));		if (!port2 || !port3)			return;		port = res->port;		memcpy(port2, port, sizeof(struct isapnp_port));		memcpy(port3, port, sizeof(struct isapnp_port));		port->next = port2;		port2->next = port3;		port2->min += 0x400;		port2->max += 0x400;		port3->min += 0x800;		port3->max += 0x800;	}	printk(KERN_INFO "isapnp: AWE32 quirk - adding two ports\n");}static void __init quirk_cmi8330_resources(struct pci_dev *dev){	struct isapnp_resources *res = dev->sysdata;	for ( ; res ; res = res->alt ) {		struct isapnp_irq *irq;		struct isapnp_dma *dma;			for( irq = res->irq; irq; irq = irq->next )	// Valid irqs are 5, 7, 10			irq->map = 0x04A0;						// 0000 0100 1010 0000		for( dma = res->dma; dma; dma = dma->next ) // Valid 8bit dma channels are 1,3			if( ( dma->flags & IORESOURCE_DMA_TYPE_MASK ) == IORESOURCE_DMA_8BIT )				dma->map = 0x000A;	}	printk(KERN_INFO "isapnp: CMI8330 quirk - fixing interrupts and dma\n");}static void __init quirk_sb16audio_resources(struct pci_dev *dev){	struct isapnp_port *port;	struct isapnp_resources *res = dev->sysdata;	int    changed = 0;	/* 	 * The default range on the mpu port for these devices is 0x388-0x388.	 * Here we increase that range so that two such cards can be	 * auto-configured.	 */		for( ; res ; res = res->alt ) {		port = res->port;		if(!port)			continue;		port = port->next;		if(!port)			continue;		port = port->next;		if(!port)			continue;		if(port->min != port->max)			continue;		port->max += 0x70;		changed = 1;	}	if(changed)		printk(KERN_INFO "isapnp: SB audio device quirk - increasing port range\n");	return;}/* *  ISAPnP Quirks *  Cards or devices that need some tweaking due to broken hardware */static struct isapnp_fixup isapnp_fixups[] __initdata = {	/* Soundblaster awe io port quirk */	{ ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0021),		quirk_awe32_resources },	{ ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0022),		quirk_awe32_resources },	{ ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0023),		quirk_awe32_resources },	/* CMI 8330 interrupt and dma fix */	{ ISAPNP_VENDOR('@','X','@'), ISAPNP_DEVICE(0x0001),		quirk_cmi8330_resources },	/* Soundblaster audio device io port range quirk */	{ ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0001),		quirk_sb16audio_resources },	{ ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0031),		quirk_sb16audio_resources },	{ ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0041),		quirk_sb16audio_resources },	{ ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0042),		quirk_sb16audio_resources },	{ ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0043),		quirk_sb16audio_resources },	{ ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0044),		quirk_sb16audio_resources },	{ ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0045),		quirk_sb16audio_resources },	{ 0 }};void isapnp_fixup_device(struct pci_dev *dev){	int i = 0;	while (isapnp_fixups[i].vendor != 0) {		if ((isapnp_fixups[i].vendor == dev->vendor) &&		    (isapnp_fixups[i].device == dev->device)) {			printk(KERN_DEBUG "isapnp: Calling quirk for %02x:%02x\n",			       dev->bus->number, dev->devfn);			isapnp_fixups[i].quirk_function(dev);		}		i++;	}}