blob: e97ecefe85841c966be495f27588ea128684bc25 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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.
6 *
7 * Copyright (c) 2000 Peter Denison <peterd@pnd-pc.demon.co.uk>
8 *
9 * Heavily based on PCI quirks handling which is
10 *
11 * Copyright (c) 1999 Martin Mares <mj@ucw.cz>
12 */
13
Linus Torvalds1da177e2005-04-16 15:20:36 -070014#include <linux/types.h>
15#include <linux/kernel.h>
16#include <linux/string.h>
17#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include <linux/pnp.h>
19#include "base.h"
20
21
22static void quirk_awe32_resources(struct pnp_dev *dev)
23{
24 struct pnp_port *port, *port2, *port3;
25 struct pnp_option *res = dev->dependent;
26
27 /*
28 * Unfortunately the isapnp_add_port_resource is too tightly bound
29 * into the PnP discovery sequence, and cannot be used. Link in the
30 * two extra ports (at offset 0x400 and 0x800 from the one given) by
31 * hand.
32 */
33 for ( ; res ; res = res->next ) {
34 port2 = pnp_alloc(sizeof(struct pnp_port));
35 if (!port2)
36 return;
37 port3 = pnp_alloc(sizeof(struct pnp_port));
38 if (!port3) {
39 kfree(port2);
40 return;
41 }
42 port = res->port;
43 memcpy(port2, port, sizeof(struct pnp_port));
44 memcpy(port3, port, sizeof(struct pnp_port));
45 port->next = port2;
46 port2->next = port3;
47 port2->min += 0x400;
48 port2->max += 0x400;
49 port3->min += 0x800;
50 port3->max += 0x800;
51 }
52 printk(KERN_INFO "pnp: AWE32 quirk - adding two ports\n");
53}
54
55static void quirk_cmi8330_resources(struct pnp_dev *dev)
56{
57 struct pnp_option *res = dev->dependent;
58 unsigned long tmp;
59
60 for ( ; res ; res = res->next ) {
61
62 struct pnp_irq *irq;
63 struct pnp_dma *dma;
64
65 for( irq = res->irq; irq; irq = irq->next ) { // Valid irqs are 5, 7, 10
66 tmp = 0x04A0;
67 bitmap_copy(irq->map, &tmp, 16); // 0000 0100 1010 0000
68 }
69
70 for( dma = res->dma; dma; dma = dma->next ) // Valid 8bit dma channels are 1,3
71 if( ( dma->flags & IORESOURCE_DMA_TYPE_MASK ) == IORESOURCE_DMA_8BIT )
72 dma->map = 0x000A;
73 }
74 printk(KERN_INFO "pnp: CMI8330 quirk - fixing interrupts and dma\n");
75}
76
77static void quirk_sb16audio_resources(struct pnp_dev *dev)
78{
79 struct pnp_port *port;
80 struct pnp_option *res = dev->dependent;
81 int changed = 0;
82
83 /*
84 * The default range on the mpu port for these devices is 0x388-0x388.
85 * Here we increase that range so that two such cards can be
86 * auto-configured.
87 */
88
89 for( ; res ; res = res->next ) {
90 port = res->port;
91 if(!port)
92 continue;
93 port = port->next;
94 if(!port)
95 continue;
96 port = port->next;
97 if(!port)
98 continue;
99 if(port->min != port->max)
100 continue;
101 port->max += 0x70;
102 changed = 1;
103 }
104 if(changed)
105 printk(KERN_INFO "pnp: SB audio device quirk - increasing port range\n");
106 return;
107}
108
109/*
110 * PnP Quirks
111 * Cards or devices that need some tweaking due to incomplete resource info
112 */
113
114static struct pnp_fixup pnp_fixups[] = {
115 /* Soundblaster awe io port quirk */
116 { "CTL0021", quirk_awe32_resources },
117 { "CTL0022", quirk_awe32_resources },
118 { "CTL0023", quirk_awe32_resources },
119 /* CMI 8330 interrupt and dma fix */
120 { "@X@0001", quirk_cmi8330_resources },
121 /* Soundblaster audio device io port range quirk */
122 { "CTL0001", quirk_sb16audio_resources },
123 { "CTL0031", quirk_sb16audio_resources },
124 { "CTL0041", quirk_sb16audio_resources },
125 { "CTL0042", quirk_sb16audio_resources },
126 { "CTL0043", quirk_sb16audio_resources },
127 { "CTL0044", quirk_sb16audio_resources },
128 { "CTL0045", quirk_sb16audio_resources },
129 { "" }
130};
131
132void pnp_fixup_device(struct pnp_dev *dev)
133{
134 int i = 0;
135
136 while (*pnp_fixups[i].id) {
137 if (compare_pnp_id(dev->id,pnp_fixups[i].id)) {
138 pnp_dbg("Calling quirk for %s",
139 dev->dev.bus_id);
140 pnp_fixups[i].quirk_function(dev);
141 }
142 i++;
143 }
144}