/* * 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/types.h> #include <linux/kernel.h> #include <linux/string.h> #include <linux/slab.h> #include <linux/pnp.h> #include <linux/io.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; } static int quirk_smc_fir_enabled(struct pnp_dev *dev) { unsigned long firbase; u8 bank, high, low, chip; if (!pnp_port_valid(dev, 1)) return 0; firbase = pnp_port_start(dev, 1); /* Select register bank 3 */ bank = inb(firbase + 7); bank &= 0xf0; bank |= 3; outb(bank, firbase + 7); high = inb(firbase + 0); low = inb(firbase + 1); chip = inb(firbase + 2); /* This corresponds to the check in smsc_ircc_present() */ if (high == 0x10 && low == 0xb8 && (chip == 0xf1 || chip == 0xf2)) return 1; return 0; } static void quirk_smc_enable(struct pnp_dev *dev) { struct resource fir, sir, irq; pnp_activate_dev(dev); if (quirk_smc_fir_enabled(dev)) return; /* * Sometimes the BIOS claims the device is enabled, but it reports * the wrong FIR resources or doesn't properly configure ISA or LPC * bridges on the way to the device. * * HP nc6000 and nc8000/nw8000 laptops have known problems like * this. Fortunately, they do fix things up if we auto-configure * the device using its _PRS and _SRS methods. */ dev_err(&dev->dev, "%s not responding at SIR 0x%lx, FIR 0x%lx; " "auto-configuring\n", dev->id->id, (unsigned long) pnp_port_start(dev, 0), (unsigned long) pnp_port_start(dev, 1)); pnp_disable_dev(dev); pnp_init_resource_table(&dev->res); pnp_auto_config_dev(dev); pnp_activate_dev(dev); if (quirk_smc_fir_enabled(dev)) { dev_err(&dev->dev, "responds at SIR 0x%lx, FIR 0x%lx\n", (unsigned long) pnp_port_start(dev, 0), (unsigned long) pnp_port_start(dev, 1)); return; } /* * The Toshiba Portege 4000 _CRS reports the FIR region first, * followed by the SIR region. The BIOS will configure the bridge, * but only if we call _SRS with SIR first, then FIR. It also * reports the IRQ as active high, when it is really active low. */ dev_err(&dev->dev, "not responding at SIR 0x%lx, FIR 0x%lx; " "swapping SIR/FIR and reconfiguring\n", (unsigned long) pnp_port_start(dev, 0), (unsigned long) pnp_port_start(dev, 1)); /* * Clear IORESOURCE_AUTO so pnp_activate_dev() doesn't reassign * these resources any more. */ fir = dev->res.port_resource[0]; sir = dev->res.port_resource[1]; fir.flags &= ~IORESOURCE_AUTO; sir.flags &= ~IORESOURCE_AUTO; irq = dev->res.irq_resource[0]; irq.flags &= ~IORESOURCE_AUTO; irq.flags &= ~IORESOURCE_BITS; irq.flags |= IORESOURCE_IRQ_LOWEDGE; pnp_disable_dev(dev); dev->res.port_resource[0] = sir; dev->res.port_resource[1] = fir; dev->res.irq_resource[0] = irq; pnp_activate_dev(dev); if (quirk_smc_fir_enabled(dev)) { dev_err(&dev->dev, "responds at SIR 0x%lx, FIR 0x%lx\n", (unsigned long) pnp_port_start(dev, 0), (unsigned long) pnp_port_start(dev, 1)); return; } dev_err(&dev->dev, "giving up; try \"smsc-ircc2.nopnp\" and " "email bjorn.helgaas@hp.com\n"); } /* * 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 }, { "SMCf010", quirk_smc_enable }, { "" } }; 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++; } }