kernel-ark/drivers/pnp/quirks.c
Bjorn Helgaas 41a5311465 PNP SMCf010 quirk: work around Toshiba Portege 4000 ACPI issues
When we enable the SMCf010 IR device, the Toshiba Portege 4000 BIOS claims
the device is working, but it really isn't configured correctly.  The BIOS
*will* configure it, but only if we call _SRS after (1) reversing the order
of the SIR and FIR I/O port regions and (2) changing the IRQ from
active-high to active-low.

This patch addresses the 2.6.22 regression:
    "no irda0 interface (2.6.21 was OK), smsc does not find chip"

I tested this on a Portege 4000.  The smsc-ircc2 driver correctly detects
the device, and "irattach irda0 -s && irdadump" shows transmitted and
received packets.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Andrey Borzenkov <arvidjaar@mail.ru>
Cc: Samuel Ortiz <samuel@sortiz.org>
Cc: "Linus Walleij (LD/EAB)" <linus.walleij@ericsson.com>
Cc: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Cc: Adam Belay <ambx1@neo.rr.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-06 10:23:43 -07:00

250 lines
6.5 KiB
C

/*
* 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++;
}
}