1 /*
2 * This file contains quirk handling code for ISAPnP 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@suse.cz>
12 */
13
14 #include <linux/types.h>
15 #include <linux/kernel.h>
16 #include <linux/pci.h>
17 #include <linux/init.h>
18 #include <linux/isapnp.h>
19 #include <linux/string.h>
20
21 static void __init quirk_awe32_resources(struct pci_dev *dev)
22 {
23 struct isapnp_port *port, *port2, *port3;
24 struct isapnp_resources *res = dev->sysdata;
25
26 /*
27 * Unfortunately the isapnp_add_port_resource is too tightly bound
28 * into the PnP discovery sequence, and cannot be used. Link in the
29 * two extra ports (at offset 0x400 and 0x800 from the one given) by
30 * hand.
31 */
32 for ( ; res ; res = res->alt ) {
33 port2 = isapnp_alloc(sizeof(struct isapnp_port));
34 port3 = isapnp_alloc(sizeof(struct isapnp_port));
35 if (!port2 || !port3)
36 return;
37 port = res->port;
38 memcpy(port2, port, sizeof(struct isapnp_port));
39 memcpy(port3, port, sizeof(struct isapnp_port));
40 port->next = port2;
41 port2->next = port3;
42 port2->min += 0x400;
43 port2->max += 0x400;
44 port3->min += 0x800;
45 port3->max += 0x800;
46 }
47 printk(KERN_INFO "isapnp: AWE32 quirk - adding two ports\n");
48 }
49
50 static void __init quirk_cmi8330_resources(struct pci_dev *dev)
51 {
52 struct isapnp_resources *res = dev->sysdata;
53
54 for ( ; res ; res = res->alt ) {
55
56 struct isapnp_irq *irq;
57 struct isapnp_dma *dma;
58
59 for( irq = res->irq; irq; irq = irq->next ) // Valid irqs are 5, 7, 10
60 irq->map = 0x04A0; // 0000 0100 1010 0000
61
62 for( dma = res->dma; dma; dma = dma->next ) // Valid 8bit dma channels are 1,3
63 if( ( dma->flags & IORESOURCE_DMA_TYPE_MASK ) == IORESOURCE_DMA_8BIT )
64 dma->map = 0x000A;
65 }
66 printk(KERN_INFO "isapnp: CMI8330 quirk - fixing interrupts and dma\n");
67 }
68
69 static void __init quirk_sb16audio_resources(struct pci_dev *dev)
70 {
71 struct isapnp_port *port;
72 struct isapnp_resources *res = dev->sysdata;
73 int changed = 0;
74
75 /*
76 * The default range on the mpu port for these devices is 0x388-0x388.
77 * Here we increase that range so that two such cards can be
78 * auto-configured.
79 */
80
81 for( ; res ; res = res->alt ) {
82 port = res->port;
83 if(!port)
84 continue;
85 port = port->next;
86 if(!port)
87 continue;
88 port = port->next;
89 if(!port)
90 continue;
91 if(port->min != port->max)
92 continue;
93 port->max += 0x70;
94 changed = 1;
95 }
96 if(changed)
97 printk(KERN_INFO "isapnp: SB audio device quirk - increasing port range\n");
98 return;
99 }
100
101 /*
102 * ISAPnP Quirks
103 * Cards or devices that need some tweaking due to broken hardware
104 */
105
106 static struct isapnp_fixup isapnp_fixups[] __initdata = {
107 /* Soundblaster awe io port quirk */
108 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0021),
109 quirk_awe32_resources },
110 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0022),
111 quirk_awe32_resources },
112 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0023),
113 quirk_awe32_resources },
114 /* CMI 8330 interrupt and dma fix */
115 { ISAPNP_VENDOR('@','X','@'), ISAPNP_DEVICE(0x0001),
116 quirk_cmi8330_resources },
117 /* Soundblaster audio device io port range quirk */
118 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0001),
119 quirk_sb16audio_resources },
120 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0031),
121 quirk_sb16audio_resources },
122 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0041),
123 quirk_sb16audio_resources },
124 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0042),
125 quirk_sb16audio_resources },
126 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0043),
127 quirk_sb16audio_resources },
128 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0044),
129 quirk_sb16audio_resources },
130 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0045),
131 quirk_sb16audio_resources },
132 { 0 }
133 };
134
135 void isapnp_fixup_device(struct pci_dev *dev)
136 {
137 int i = 0;
138
139 while (isapnp_fixups[i].vendor != 0) {
140 if ((isapnp_fixups[i].vendor == dev->vendor) &&
141 (isapnp_fixups[i].device == dev->device)) {
142 printk(KERN_DEBUG "isapnp: Calling quirk for %02x:%02x\n",
143 dev->bus->number, dev->devfn);
144 isapnp_fixups[i].quirk_function(dev);
145 }
146 i++;
147 }
148 }
149
150
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