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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@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");
}
/*
* ISAPnP Quirks
* Cards or devices that need some tweaking due to broken hardware
*/
static struct isapnp_fixup isapnp_fixups[] __initdata = {
{ 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 },
{ 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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