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@ucw.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 #if 0
22 #define ISAPNP_DEBUG
23 #endif
24
quirk_awe32_resources(struct pci_dev * dev)25 static void __init quirk_awe32_resources(struct pci_dev *dev)
26 {
27 struct isapnp_port *port, *port2, *port3;
28 struct isapnp_resources *res = dev->sysdata;
29
30 /*
31 * Unfortunately the isapnp_add_port_resource is too tightly bound
32 * into the PnP discovery sequence, and cannot be used. Link in the
33 * two extra ports (at offset 0x400 and 0x800 from the one given) by
34 * hand.
35 */
36 for ( ; res ; res = res->alt ) {
37 port2 = isapnp_alloc(sizeof(struct isapnp_port));
38 port3 = isapnp_alloc(sizeof(struct isapnp_port));
39 if (!port2 || !port3)
40 return;
41 port = res->port;
42 memcpy(port2, port, sizeof(struct isapnp_port));
43 memcpy(port3, port, sizeof(struct isapnp_port));
44 port->next = port2;
45 port2->next = port3;
46 port2->min += 0x400;
47 port2->max += 0x400;
48 port3->min += 0x800;
49 port3->max += 0x800;
50 }
51 printk(KERN_INFO "isapnp: AWE32 quirk - adding two ports\n");
52 }
53
quirk_cmi8330_resources(struct pci_dev * dev)54 static void __init quirk_cmi8330_resources(struct pci_dev *dev)
55 {
56 struct isapnp_resources *res = dev->sysdata;
57
58 for ( ; res ; res = res->alt ) {
59
60 struct isapnp_irq *irq;
61 struct isapnp_dma *dma;
62
63 for( irq = res->irq; irq; irq = irq->next ) // Valid irqs are 5, 7, 10
64 irq->map = 0x04A0; // 0000 0100 1010 0000
65
66 for( dma = res->dma; dma; dma = dma->next ) // Valid 8bit dma channels are 1,3
67 if( ( dma->flags & IORESOURCE_DMA_TYPE_MASK ) == IORESOURCE_DMA_8BIT )
68 dma->map = 0x000A;
69 }
70 printk(KERN_INFO "isapnp: CMI8330 quirk - fixing interrupts and dma\n");
71 }
72
quirk_sb16audio_resources(struct pci_dev * dev)73 static void __init quirk_sb16audio_resources(struct pci_dev *dev)
74 {
75 struct isapnp_port *port;
76 struct isapnp_resources *res = dev->sysdata;
77 int changed = 0;
78
79 /*
80 * The default range on the mpu port for these devices is 0x388-0x388.
81 * Here we increase that range so that two such cards can be
82 * auto-configured.
83 */
84
85 for( ; res ; res = res->alt ) {
86 port = res->port;
87 if(!port)
88 continue;
89 port = port->next;
90 if(!port)
91 continue;
92 port = port->next;
93 if(!port)
94 continue;
95 if(port->min != port->max)
96 continue;
97 port->max += 0x70;
98 changed = 1;
99 }
100 if(changed)
101 printk(KERN_INFO "isapnp: SB audio device quirk - increasing port range\n");
102 return;
103 }
104
105 /*
106 * ISAPnP Quirks
107 * Cards or devices that need some tweaking due to broken hardware
108 */
109
110 static struct isapnp_fixup isapnp_fixups[] __initdata = {
111 /* Soundblaster awe io port quirk */
112 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0021),
113 quirk_awe32_resources },
114 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0022),
115 quirk_awe32_resources },
116 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0023),
117 quirk_awe32_resources },
118 /* CMI 8330 interrupt and dma fix */
119 { ISAPNP_VENDOR('@','X','@'), ISAPNP_DEVICE(0x0001),
120 quirk_cmi8330_resources },
121 /* Soundblaster audio device io port range quirk */
122 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0001),
123 quirk_sb16audio_resources },
124 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0031),
125 quirk_sb16audio_resources },
126 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0041),
127 quirk_sb16audio_resources },
128 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0042),
129 quirk_sb16audio_resources },
130 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0043),
131 quirk_sb16audio_resources },
132 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0044),
133 quirk_sb16audio_resources },
134 { ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0045),
135 quirk_sb16audio_resources },
136 { 0 }
137 };
138
isapnp_fixup_device(struct pci_dev * dev)139 void isapnp_fixup_device(struct pci_dev *dev)
140 {
141 int i = 0;
142
143 while (isapnp_fixups[i].vendor != 0) {
144 if ((isapnp_fixups[i].vendor == dev->vendor) &&
145 (isapnp_fixups[i].device == dev->device)) {
146 #ifdef ISAPNP_DEBUG
147 printk(KERN_DEBUG "isapnp: Calling quirk for %02x:%02x\n",
148 dev->bus->number, dev->devfn);
149 #endif
150 isapnp_fixups[i].quirk_function(dev);
151 }
152 i++;
153 }
154 }
155
156