/* * 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 * * Heavily based on PCI quirks handling which is * * Copyright (c) 1999 Martin Mares */ #include #include #include #include #include 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 }, { 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 "PnP: Calling quirk for %s\n", dev->slot_name); isapnp_fixups[i].quirk_function(dev); } i++; } }