2 * This file contains quirk handling code for PnP devices
3 * Some devices do not report all their resources, and need to have extra
4 * resources added. This is most easily accomplished at initialisation time
5 * when building up the resource structure for the first time.
7 * Copyright (c) 2000 Peter Denison <peterd@pnd-pc.demon.co.uk>
9 * Heavily based on PCI quirks handling which is
11 * Copyright (c) 1999 Martin Mares <mj@ucw.cz>
14 #include <linux/config.h>
15 #include <linux/types.h>
16 #include <linux/kernel.h>
17 #include <linux/string.h>
18 #include <linux/slab.h>
20 #ifdef CONFIG_PNP_DEBUG
26 #include <linux/pnp.h>
30 static void quirk_awe32_resources(struct pnp_dev *dev)
32 struct pnp_port *port, *port2, *port3;
33 struct pnp_option *res = dev->dependent;
36 * Unfortunately the isapnp_add_port_resource is too tightly bound
37 * into the PnP discovery sequence, and cannot be used. Link in the
38 * two extra ports (at offset 0x400 and 0x800 from the one given) by
41 for ( ; res ; res = res->next ) {
42 port2 = pnp_alloc(sizeof(struct pnp_port));
45 port3 = pnp_alloc(sizeof(struct pnp_port));
51 memcpy(port2, port, sizeof(struct pnp_port));
52 memcpy(port3, port, sizeof(struct pnp_port));
60 printk(KERN_INFO "pnp: AWE32 quirk - adding two ports\n");
63 static void quirk_cmi8330_resources(struct pnp_dev *dev)
65 struct pnp_option *res = dev->dependent;
67 for ( ; res ; res = res->next ) {
72 for( irq = res->irq; irq; irq = irq->next ) // Valid irqs are 5, 7, 10
73 irq->map = 0x04A0; // 0000 0100 1010 0000
75 for( dma = res->dma; dma; dma = dma->next ) // Valid 8bit dma channels are 1,3
76 if( ( dma->flags & IORESOURCE_DMA_TYPE_MASK ) == IORESOURCE_DMA_8BIT )
79 printk(KERN_INFO "pnp: CMI8330 quirk - fixing interrupts and dma\n");
82 static void quirk_sb16audio_resources(struct pnp_dev *dev)
84 struct pnp_port *port;
85 struct pnp_option *res = dev->dependent;
89 * The default range on the mpu port for these devices is 0x388-0x388.
90 * Here we increase that range so that two such cards can be
94 for( ; res ; res = res->next ) {
104 if(port->min != port->max)
110 printk(KERN_INFO "pnp: SB audio device quirk - increasing port range\n");
116 * Cards or devices that need some tweaking due to incomplete resource info
119 static struct pnp_fixup pnp_fixups[] = {
120 /* Soundblaster awe io port quirk */
121 { "CTL0021", quirk_awe32_resources },
122 { "CTL0022", quirk_awe32_resources },
123 { "CTL0023", quirk_awe32_resources },
124 /* CMI 8330 interrupt and dma fix */
125 { "@X@0001", quirk_cmi8330_resources },
126 /* Soundblaster audio device io port range quirk */
127 { "CTL0001", quirk_sb16audio_resources },
128 { "CTL0031", quirk_sb16audio_resources },
129 { "CTL0041", quirk_sb16audio_resources },
130 { "CTL0042", quirk_sb16audio_resources },
131 { "CTL0043", quirk_sb16audio_resources },
132 { "CTL0044", quirk_sb16audio_resources },
133 { "CTL0045", quirk_sb16audio_resources },
137 void pnp_fixup_device(struct pnp_dev *dev)
141 while (*pnp_fixups[i].id) {
142 if (compare_pnp_id(dev->id,pnp_fixups[i].id)) {
143 pnp_dbg("Calling quirk for %s",
145 pnp_fixups[i].quirk_function(dev);