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/*
* 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@ucw.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++;
}
}
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