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1da177e4 LT |
1 | /* |
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> | |
19 | ||
20 | #ifdef CONFIG_PNP_DEBUG | |
21 | #define DEBUG | |
22 | #else | |
23 | #undef DEBUG | |
24 | #endif | |
25 | ||
26 | #include <linux/pnp.h> | |
27 | #include "base.h" | |
28 | ||
29 | ||
30 | static void quirk_awe32_resources(struct pnp_dev *dev) | |
31 | { | |
32 | struct pnp_port *port, *port2, *port3; | |
33 | struct pnp_option *res = dev->dependent; | |
34 | ||
35 | /* | |
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 | |
39 | * hand. | |
40 | */ | |
41 | for ( ; res ; res = res->next ) { | |
42 | port2 = pnp_alloc(sizeof(struct pnp_port)); | |
43 | if (!port2) | |
44 | return; | |
45 | port3 = pnp_alloc(sizeof(struct pnp_port)); | |
46 | if (!port3) { | |
47 | kfree(port2); | |
48 | return; | |
49 | } | |
50 | port = res->port; | |
51 | memcpy(port2, port, sizeof(struct pnp_port)); | |
52 | memcpy(port3, port, sizeof(struct pnp_port)); | |
53 | port->next = port2; | |
54 | port2->next = port3; | |
55 | port2->min += 0x400; | |
56 | port2->max += 0x400; | |
57 | port3->min += 0x800; | |
58 | port3->max += 0x800; | |
59 | } | |
60 | printk(KERN_INFO "pnp: AWE32 quirk - adding two ports\n"); | |
61 | } | |
62 | ||
63 | static void quirk_cmi8330_resources(struct pnp_dev *dev) | |
64 | { | |
65 | struct pnp_option *res = dev->dependent; | |
66 | unsigned long tmp; | |
67 | ||
68 | for ( ; res ; res = res->next ) { | |
69 | ||
70 | struct pnp_irq *irq; | |
71 | struct pnp_dma *dma; | |
72 | ||
73 | for( irq = res->irq; irq; irq = irq->next ) { // Valid irqs are 5, 7, 10 | |
74 | tmp = 0x04A0; | |
75 | bitmap_copy(irq->map, &tmp, 16); // 0000 0100 1010 0000 | |
76 | } | |
77 | ||
78 | for( dma = res->dma; dma; dma = dma->next ) // Valid 8bit dma channels are 1,3 | |
79 | if( ( dma->flags & IORESOURCE_DMA_TYPE_MASK ) == IORESOURCE_DMA_8BIT ) | |
80 | dma->map = 0x000A; | |
81 | } | |
82 | printk(KERN_INFO "pnp: CMI8330 quirk - fixing interrupts and dma\n"); | |
83 | } | |
84 | ||
85 | static void quirk_sb16audio_resources(struct pnp_dev *dev) | |
86 | { | |
87 | struct pnp_port *port; | |
88 | struct pnp_option *res = dev->dependent; | |
89 | int changed = 0; | |
90 | ||
91 | /* | |
92 | * The default range on the mpu port for these devices is 0x388-0x388. | |
93 | * Here we increase that range so that two such cards can be | |
94 | * auto-configured. | |
95 | */ | |
96 | ||
97 | for( ; res ; res = res->next ) { | |
98 | port = res->port; | |
99 | if(!port) | |
100 | continue; | |
101 | port = port->next; | |
102 | if(!port) | |
103 | continue; | |
104 | port = port->next; | |
105 | if(!port) | |
106 | continue; | |
107 | if(port->min != port->max) | |
108 | continue; | |
109 | port->max += 0x70; | |
110 | changed = 1; | |
111 | } | |
112 | if(changed) | |
113 | printk(KERN_INFO "pnp: SB audio device quirk - increasing port range\n"); | |
114 | return; | |
115 | } | |
116 | ||
117 | /* | |
118 | * PnP Quirks | |
119 | * Cards or devices that need some tweaking due to incomplete resource info | |
120 | */ | |
121 | ||
122 | static struct pnp_fixup pnp_fixups[] = { | |
123 | /* Soundblaster awe io port quirk */ | |
124 | { "CTL0021", quirk_awe32_resources }, | |
125 | { "CTL0022", quirk_awe32_resources }, | |
126 | { "CTL0023", quirk_awe32_resources }, | |
127 | /* CMI 8330 interrupt and dma fix */ | |
128 | { "@X@0001", quirk_cmi8330_resources }, | |
129 | /* Soundblaster audio device io port range quirk */ | |
130 | { "CTL0001", quirk_sb16audio_resources }, | |
131 | { "CTL0031", quirk_sb16audio_resources }, | |
132 | { "CTL0041", quirk_sb16audio_resources }, | |
133 | { "CTL0042", quirk_sb16audio_resources }, | |
134 | { "CTL0043", quirk_sb16audio_resources }, | |
135 | { "CTL0044", quirk_sb16audio_resources }, | |
136 | { "CTL0045", quirk_sb16audio_resources }, | |
137 | { "" } | |
138 | }; | |
139 | ||
140 | void pnp_fixup_device(struct pnp_dev *dev) | |
141 | { | |
142 | int i = 0; | |
143 | ||
144 | while (*pnp_fixups[i].id) { | |
145 | if (compare_pnp_id(dev->id,pnp_fixups[i].id)) { | |
146 | pnp_dbg("Calling quirk for %s", | |
147 | dev->dev.bus_id); | |
148 | pnp_fixups[i].quirk_function(dev); | |
149 | } | |
150 | i++; | |
151 | } | |
152 | } |