/* * This file contains quirk handling code for PnP 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/config.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/string.h> #include <linux/slab.h> #include <linux/pnp.h> #include "base.h" static void quirk_awe32_resources(struct pnp_dev *dev) { struct pnp_port *port, *port2, *port3; struct pnp_option *res = dev->dependent; /* * 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->next ) { port2 = pnp_alloc(sizeof(struct pnp_port)); if (!port2) return; port3 = pnp_alloc(sizeof(struct pnp_port)); if (!port3) { kfree(port2); return; } port = res->port; memcpy(port2, port, sizeof(struct pnp_port)); memcpy(port3, port, sizeof(struct pnp_port)); port->next = port2; port2->next = port3; port2->min += 0x400; port2->max += 0x400; port3->min += 0x800; port3->max += 0x800; } printk(KERN_INFO "pnp: AWE32 quirk - adding two ports\n"); } static void quirk_cmi8330_resources(struct pnp_dev *dev) { struct pnp_option *res = dev->dependent; unsigned long tmp; for ( ; res ; res = res->next ) { struct pnp_irq *irq; struct pnp_dma *dma; for( irq = res->irq; irq; irq = irq->next ) { // Valid irqs are 5, 7, 10 tmp = 0x04A0; bitmap_copy(irq->map, &tmp, 16); // 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 "pnp: CMI8330 quirk - fixing interrupts and dma\n"); } static void quirk_sb16audio_resources(struct pnp_dev *dev) { struct pnp_port *port; struct pnp_option *res = dev->dependent; 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->next ) { 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 "pnp: SB audio device quirk - increasing port range\n"); return; } /* * PnP Quirks * Cards or devices that need some tweaking due to incomplete resource info */ static struct pnp_fixup pnp_fixups[] = { /* Soundblaster awe io port quirk */ { "CTL0021", quirk_awe32_resources }, { "CTL0022", quirk_awe32_resources }, { "CTL0023", quirk_awe32_resources }, /* CMI 8330 interrupt and dma fix */ { "@X@0001", quirk_cmi8330_resources }, /* Soundblaster audio device io port range quirk */ { "CTL0001", quirk_sb16audio_resources }, { "CTL0031", quirk_sb16audio_resources }, { "CTL0041", quirk_sb16audio_resources }, { "CTL0042", quirk_sb16audio_resources }, { "CTL0043", quirk_sb16audio_resources }, { "CTL0044", quirk_sb16audio_resources }, { "CTL0045", quirk_sb16audio_resources }, { "" } }; void pnp_fixup_device(struct pnp_dev *dev) { int i = 0; while (*pnp_fixups[i].id) { if (compare_pnp_id(dev->id,pnp_fixups[i].id)) { pnp_dbg("Calling quirk for %s", dev->dev.bus_id); pnp_fixups[i].quirk_function(dev); } i++; } }