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 <linux/io.h> 20 #include "base.h" 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) == 72 IORESOURCE_DMA_8BIT) 73 dma->map = 0x000A; 74 } 75 printk(KERN_INFO "pnp: CMI8330 quirk - fixing interrupts and dma\n"); 76 } 77 78 static void quirk_sb16audio_resources(struct pnp_dev *dev) 79 { 80 struct pnp_port *port; 81 struct pnp_option *res = dev->dependent; 82 int changed = 0; 83 84 /* 85 * The default range on the mpu port for these devices is 0x388-0x388. 86 * Here we increase that range so that two such cards can be 87 * auto-configured. 88 */ 89 90 for (; res; res = res->next) { 91 port = res->port; 92 if (!port) 93 continue; 94 port = port->next; 95 if (!port) 96 continue; 97 port = port->next; 98 if (!port) 99 continue; 100 if (port->min != port->max) 101 continue; 102 port->max += 0x70; 103 changed = 1; 104 } 105 if (changed) 106 printk(KERN_INFO 107 "pnp: SB audio device quirk - increasing port range\n"); 108 } 109 110 /* 111 * PnP Quirks 112 * Cards or devices that need some tweaking due to incomplete resource info 113 */ 114 115 static struct pnp_fixup pnp_fixups[] = { 116 /* Soundblaster awe io port quirk */ 117 {"CTL0021", quirk_awe32_resources}, 118 {"CTL0022", quirk_awe32_resources}, 119 {"CTL0023", quirk_awe32_resources}, 120 /* CMI 8330 interrupt and dma fix */ 121 {"@X@0001", quirk_cmi8330_resources}, 122 /* Soundblaster audio device io port range quirk */ 123 {"CTL0001", quirk_sb16audio_resources}, 124 {"CTL0031", quirk_sb16audio_resources}, 125 {"CTL0041", quirk_sb16audio_resources}, 126 {"CTL0042", quirk_sb16audio_resources}, 127 {"CTL0043", quirk_sb16audio_resources}, 128 {"CTL0044", quirk_sb16audio_resources}, 129 {"CTL0045", quirk_sb16audio_resources}, 130 {""} 131 }; 132 133 void pnp_fixup_device(struct pnp_dev *dev) 134 { 135 int i = 0; 136 137 while (*pnp_fixups[i].id) { 138 if (compare_pnp_id(dev->id, pnp_fixups[i].id)) { 139 pnp_dbg("Calling quirk for %s", dev->dev.bus_id); 140 pnp_fixups[i].quirk_function(dev); 141 } 142 i++; 143 } 144 } 145