Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 | /*
* 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++;
}
}
|