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/*
* 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");
}
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++;
}
}
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