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 } 153