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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
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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019#include <linux/pnp.h>
20#include "base.h"
21
22
23static void quirk_awe32_resources(struct pnp_dev *dev)
24{
25 struct pnp_port *port, *port2, *port3;
26 struct pnp_option *res = dev->dependent;
27
28 /*
29 * Unfortunately the isapnp_add_port_resource is too tightly bound
30 * into the PnP discovery sequence, and cannot be used. Link in the
31 * two extra ports (at offset 0x400 and 0x800 from the one given) by
32 * hand.
33 */
34 for ( ; res ; res = res->next ) {
35 port2 = pnp_alloc(sizeof(struct pnp_port));
36 if (!port2)
37 return;
38 port3 = pnp_alloc(sizeof(struct pnp_port));
39 if (!port3) {
40 kfree(port2);
41 return;
42 }
43 port = res->port;
44 memcpy(port2, port, sizeof(struct pnp_port));
45 memcpy(port3, port, sizeof(struct pnp_port));
46 port->next = port2;
47 port2->next = port3;
48 port2->min += 0x400;
49 port2->max += 0x400;
50 port3->min += 0x800;
51 port3->max += 0x800;
52 }
53 printk(KERN_INFO "pnp: AWE32 quirk - adding two ports\n");
54}
55
56static void quirk_cmi8330_resources(struct pnp_dev *dev)
57{
58 struct pnp_option *res = dev->dependent;
59 unsigned long tmp;
60
61 for ( ; res ; res = res->next ) {
62
63 struct pnp_irq *irq;
64 struct pnp_dma *dma;
65
66 for( irq = res->irq; irq; irq = irq->next ) { // Valid irqs are 5, 7, 10
67 tmp = 0x04A0;
68 bitmap_copy(irq->map, &tmp, 16); // 0000 0100 1010 0000
69 }
70
71 for( dma = res->dma; dma; dma = dma->next ) // Valid 8bit dma channels are 1,3
72 if( ( dma->flags & IORESOURCE_DMA_TYPE_MASK ) == IORESOURCE_DMA_8BIT )
73 dma->map = 0x000A;
74 }
75 printk(KERN_INFO "pnp: CMI8330 quirk - fixing interrupts and dma\n");
76}
77
78static void quirk_sb16audio_resources(struct pnp_dev *dev)
79{
80 struct pnp_port *port;
81 struct pnp_option *res = dev->dependent;
82 int changed = 0;
83
84 /*
85 * The default range on the mpu port for these devices is 0x388-0x388.
86 * Here we increase that range so that two such cards can be
87 * auto-configured.
88 */
89
90 for( ; res ; res = res->next ) {
91 port = res->port;
92 if(!port)
93 continue;
94 port = port->next;
95 if(!port)
96 continue;
97 port = port->next;
98 if(!port)
99 continue;
100 if(port->min != port->max)
101 continue;
102 port->max += 0x70;
103 changed = 1;
104 }
105 if(changed)
106 printk(KERN_INFO "pnp: SB audio device quirk - increasing port range\n");
107 return;
108}
109
110/*
111 * PnP Quirks
112 * Cards or devices that need some tweaking due to incomplete resource info
113 */
114
115static struct pnp_fixup pnp_fixups[] = {
116 /* Soundblaster awe io port quirk */
117 { "CTL0021", quirk_awe32_resources },
118 { "CTL0022", quirk_awe32_resources },
119 { "CTL0023", quirk_awe32_resources },
120 /* CMI 8330 interrupt and dma fix */
121 { "@X@0001", quirk_cmi8330_resources },
122 /* Soundblaster audio device io port range quirk */
123 { "CTL0001", quirk_sb16audio_resources },
124 { "CTL0031", quirk_sb16audio_resources },
125 { "CTL0041", quirk_sb16audio_resources },
126 { "CTL0042", quirk_sb16audio_resources },
127 { "CTL0043", quirk_sb16audio_resources },
128 { "CTL0044", quirk_sb16audio_resources },
129 { "CTL0045", quirk_sb16audio_resources },
130 { "" }
131};
132
133void pnp_fixup_device(struct pnp_dev *dev)
134{
135 int i = 0;
136
137 while (*pnp_fixups[i].id) {
138 if (compare_pnp_id(dev->id,pnp_fixups[i].id)) {
139 pnp_dbg("Calling quirk for %s",
140 dev->dev.bus_id);
141 pnp_fixups[i].quirk_function(dev);
142 }
143 i++;
144 }
145}