250 lines
6.5 KiB
C
250 lines
6.5 KiB
C
/*
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* This file contains quirk handling code for PnP devices
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* Some devices do not report all their resources, and need to have extra
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* resources added. This is most easily accomplished at initialisation time
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* when building up the resource structure for the first time.
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*
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* Copyright (c) 2000 Peter Denison <peterd@pnd-pc.demon.co.uk>
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*
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* Heavily based on PCI quirks handling which is
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*
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* Copyright (c) 1999 Martin Mares <mj@ucw.cz>
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/slab.h>
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#include <linux/pnp.h>
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#include <linux/io.h>
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#include "base.h"
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static void quirk_awe32_resources(struct pnp_dev *dev)
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{
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struct pnp_port *port, *port2, *port3;
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struct pnp_option *res = dev->dependent;
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/*
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* Unfortunately the isapnp_add_port_resource is too tightly bound
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* into the PnP discovery sequence, and cannot be used. Link in the
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* two extra ports (at offset 0x400 and 0x800 from the one given) by
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* hand.
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*/
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for ( ; res ; res = res->next ) {
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port2 = pnp_alloc(sizeof(struct pnp_port));
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if (!port2)
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return;
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port3 = pnp_alloc(sizeof(struct pnp_port));
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if (!port3) {
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kfree(port2);
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return;
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}
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port = res->port;
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memcpy(port2, port, sizeof(struct pnp_port));
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memcpy(port3, port, sizeof(struct pnp_port));
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port->next = port2;
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port2->next = port3;
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port2->min += 0x400;
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port2->max += 0x400;
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port3->min += 0x800;
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port3->max += 0x800;
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}
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printk(KERN_INFO "pnp: AWE32 quirk - adding two ports\n");
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}
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static void quirk_cmi8330_resources(struct pnp_dev *dev)
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{
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struct pnp_option *res = dev->dependent;
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unsigned long tmp;
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for ( ; res ; res = res->next ) {
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struct pnp_irq *irq;
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struct pnp_dma *dma;
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for( irq = res->irq; irq; irq = irq->next ) { // Valid irqs are 5, 7, 10
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tmp = 0x04A0;
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bitmap_copy(irq->map, &tmp, 16); // 0000 0100 1010 0000
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}
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for( dma = res->dma; dma; dma = dma->next ) // Valid 8bit dma channels are 1,3
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if( ( dma->flags & IORESOURCE_DMA_TYPE_MASK ) == IORESOURCE_DMA_8BIT )
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dma->map = 0x000A;
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}
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printk(KERN_INFO "pnp: CMI8330 quirk - fixing interrupts and dma\n");
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}
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static void quirk_sb16audio_resources(struct pnp_dev *dev)
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{
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struct pnp_port *port;
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struct pnp_option *res = dev->dependent;
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int changed = 0;
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/*
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* The default range on the mpu port for these devices is 0x388-0x388.
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* Here we increase that range so that two such cards can be
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* auto-configured.
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*/
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for( ; res ; res = res->next ) {
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port = res->port;
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if(!port)
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continue;
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port = port->next;
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if(!port)
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continue;
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port = port->next;
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if(!port)
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continue;
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if(port->min != port->max)
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continue;
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port->max += 0x70;
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changed = 1;
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}
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if(changed)
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printk(KERN_INFO "pnp: SB audio device quirk - increasing port range\n");
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return;
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}
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static int quirk_smc_fir_enabled(struct pnp_dev *dev)
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{
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unsigned long firbase;
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u8 bank, high, low, chip;
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if (!pnp_port_valid(dev, 1))
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return 0;
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firbase = pnp_port_start(dev, 1);
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/* Select register bank 3 */
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bank = inb(firbase + 7);
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bank &= 0xf0;
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bank |= 3;
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outb(bank, firbase + 7);
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high = inb(firbase + 0);
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low = inb(firbase + 1);
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chip = inb(firbase + 2);
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/* This corresponds to the check in smsc_ircc_present() */
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if (high == 0x10 && low == 0xb8 && (chip == 0xf1 || chip == 0xf2))
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return 1;
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return 0;
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}
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static void quirk_smc_enable(struct pnp_dev *dev)
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{
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struct resource fir, sir, irq;
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pnp_activate_dev(dev);
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if (quirk_smc_fir_enabled(dev))
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return;
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/*
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* Sometimes the BIOS claims the device is enabled, but it reports
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* the wrong FIR resources or doesn't properly configure ISA or LPC
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* bridges on the way to the device.
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*
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* HP nc6000 and nc8000/nw8000 laptops have known problems like
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* this. Fortunately, they do fix things up if we auto-configure
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* the device using its _PRS and _SRS methods.
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*/
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dev_err(&dev->dev, "%s not responding at SIR 0x%lx, FIR 0x%lx; "
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"auto-configuring\n", dev->id->id,
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(unsigned long) pnp_port_start(dev, 0),
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(unsigned long) pnp_port_start(dev, 1));
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pnp_disable_dev(dev);
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pnp_init_resource_table(&dev->res);
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pnp_auto_config_dev(dev);
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pnp_activate_dev(dev);
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if (quirk_smc_fir_enabled(dev)) {
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dev_err(&dev->dev, "responds at SIR 0x%lx, FIR 0x%lx\n",
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(unsigned long) pnp_port_start(dev, 0),
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(unsigned long) pnp_port_start(dev, 1));
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return;
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}
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/*
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* The Toshiba Portege 4000 _CRS reports the FIR region first,
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* followed by the SIR region. The BIOS will configure the bridge,
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* but only if we call _SRS with SIR first, then FIR. It also
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* reports the IRQ as active high, when it is really active low.
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*/
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dev_err(&dev->dev, "not responding at SIR 0x%lx, FIR 0x%lx; "
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"swapping SIR/FIR and reconfiguring\n",
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(unsigned long) pnp_port_start(dev, 0),
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(unsigned long) pnp_port_start(dev, 1));
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/*
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* Clear IORESOURCE_AUTO so pnp_activate_dev() doesn't reassign
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* these resources any more.
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*/
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fir = dev->res.port_resource[0];
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sir = dev->res.port_resource[1];
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fir.flags &= ~IORESOURCE_AUTO;
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sir.flags &= ~IORESOURCE_AUTO;
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irq = dev->res.irq_resource[0];
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irq.flags &= ~IORESOURCE_AUTO;
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irq.flags &= ~IORESOURCE_BITS;
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irq.flags |= IORESOURCE_IRQ_LOWEDGE;
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pnp_disable_dev(dev);
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dev->res.port_resource[0] = sir;
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dev->res.port_resource[1] = fir;
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dev->res.irq_resource[0] = irq;
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pnp_activate_dev(dev);
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if (quirk_smc_fir_enabled(dev)) {
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dev_err(&dev->dev, "responds at SIR 0x%lx, FIR 0x%lx\n",
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(unsigned long) pnp_port_start(dev, 0),
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(unsigned long) pnp_port_start(dev, 1));
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return;
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}
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dev_err(&dev->dev, "giving up; try \"smsc-ircc2.nopnp\" and "
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"email bjorn.helgaas@hp.com\n");
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}
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/*
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* PnP Quirks
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* Cards or devices that need some tweaking due to incomplete resource info
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*/
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static struct pnp_fixup pnp_fixups[] = {
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/* Soundblaster awe io port quirk */
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{ "CTL0021", quirk_awe32_resources },
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{ "CTL0022", quirk_awe32_resources },
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{ "CTL0023", quirk_awe32_resources },
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/* CMI 8330 interrupt and dma fix */
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{ "@X@0001", quirk_cmi8330_resources },
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/* Soundblaster audio device io port range quirk */
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{ "CTL0001", quirk_sb16audio_resources },
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{ "CTL0031", quirk_sb16audio_resources },
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{ "CTL0041", quirk_sb16audio_resources },
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{ "CTL0042", quirk_sb16audio_resources },
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{ "CTL0043", quirk_sb16audio_resources },
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{ "CTL0044", quirk_sb16audio_resources },
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{ "CTL0045", quirk_sb16audio_resources },
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{ "SMCf010", quirk_smc_enable },
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{ "" }
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};
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void pnp_fixup_device(struct pnp_dev *dev)
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{
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int i = 0;
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while (*pnp_fixups[i].id) {
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if (compare_pnp_id(dev->id,pnp_fixups[i].id)) {
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pnp_dbg("Calling quirk for %s",
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dev->dev.bus_id);
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pnp_fixups[i].quirk_function(dev);
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}
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i++;
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}
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}
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