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/types.h> 15 #include <linux/kernel.h> 16 #include <linux/string.h> 17 #include <linux/slab.h> 18 #include <linux/pnp.h> 19 #include "base.h" 20 21 22 static 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 55 static 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 77 static 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 */ 113 114 static 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 }; 131 132 void 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 } 145