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.
7 * Copyright (c) 2000 Peter Denison <peterd@pnd-pc.demon.co.uk>
9 * Heavily based on PCI quirks handling which is
11 * Copyright (c) 1999 Martin Mares <mj@ucw.cz>
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>
23 static void quirk_awe32_resources(struct pnp_dev *dev)
25 struct pnp_port *port, *port2, *port3;
26 struct pnp_option *res = dev->dependent;
29 * Unfortunately the isapnp_add_port_resource is too tightly bound
30 * into the PnP discovery sequence, and cannot be used. Link in the
31 * two extra ports (at offset 0x400 and 0x800 from the one given) by
34 for ( ; res ; res = res->next ) {
35 port2 = pnp_alloc(sizeof(struct pnp_port));
38 port3 = pnp_alloc(sizeof(struct pnp_port));
44 memcpy(port2, port, sizeof(struct pnp_port));
45 memcpy(port3, port, sizeof(struct pnp_port));
53 printk(KERN_INFO "pnp: AWE32 quirk - adding two ports\n");
56 static void quirk_cmi8330_resources(struct pnp_dev *dev)
58 struct pnp_option *res = dev->dependent;
61 for ( ; res ; res = res->next ) {
66 for( irq = res->irq; irq; irq = irq->next ) { // Valid irqs are 5, 7, 10
68 bitmap_copy(irq->map, &tmp, 16); // 0000 0100 1010 0000
71 for( dma = res->dma; dma; dma = dma->next ) // Valid 8bit dma channels are 1,3
72 if( ( dma->flags & IORESOURCE_DMA_TYPE_MASK ) == IORESOURCE_DMA_8BIT )
75 printk(KERN_INFO "pnp: CMI8330 quirk - fixing interrupts and dma\n");
78 static void quirk_sb16audio_resources(struct pnp_dev *dev)
80 struct pnp_port *port;
81 struct pnp_option *res = dev->dependent;
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
90 for( ; res ; res = res->next ) {
100 if(port->min != port->max)
106 printk(KERN_INFO "pnp: SB audio device quirk - increasing port range\n");
110 static void quirk_smc_enable(struct pnp_dev *dev)
112 unsigned int firbase;
114 if (!dev->active || !pnp_port_valid(dev, 1))
118 * On the HP/Compaq nw8240 (and probably other similar machines),
119 * there is an SMCF010 device with two I/O port regions:
124 * _STA reports the device is enabled, but in fact, the BIOS
125 * neglects to enable the FIR range. Fortunately, it does fully
126 * enable the device if we call _SRS.
128 firbase = pnp_port_start(dev, 1);
129 if (inb(firbase + 0x7 /* IRCC_MASTER */) == 0xff) {
130 pnp_err("%s (%s) enabled but not responding, disabling and "
131 "re-enabling", dev->dev.bus_id, pnp_dev_name(dev));
132 pnp_disable_dev(dev);
133 pnp_activate_dev(dev);
140 * Cards or devices that need some tweaking due to incomplete resource info
143 static struct pnp_fixup pnp_fixups[] = {
144 /* Soundblaster awe io port quirk */
145 { "CTL0021", quirk_awe32_resources },
146 { "CTL0022", quirk_awe32_resources },
147 { "CTL0023", quirk_awe32_resources },
148 /* CMI 8330 interrupt and dma fix */
149 { "@X@0001", quirk_cmi8330_resources },
150 /* Soundblaster audio device io port range quirk */
151 { "CTL0001", quirk_sb16audio_resources },
152 { "CTL0031", quirk_sb16audio_resources },
153 { "CTL0041", quirk_sb16audio_resources },
154 { "CTL0042", quirk_sb16audio_resources },
155 { "CTL0043", quirk_sb16audio_resources },
156 { "CTL0044", quirk_sb16audio_resources },
157 { "CTL0045", quirk_sb16audio_resources },
158 { "SMCf010", quirk_smc_enable },
162 void pnp_fixup_device(struct pnp_dev *dev)
166 while (*pnp_fixups[i].id) {
167 if (compare_pnp_id(dev->id,pnp_fixups[i].id)) {
168 pnp_dbg("Calling quirk for %s",
170 pnp_fixups[i].quirk_function(dev);