153 строки
3.8 KiB
C
153 строки
3.8 KiB
C
/*
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* This file contains quirk handling code for PnP devices
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* Some devices do not report all their resources, and need to have extra
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* resources added. This is most easily accomplished at initialisation time
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* when building up the resource structure for the first time.
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*
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* Copyright (c) 2000 Peter Denison <peterd@pnd-pc.demon.co.uk>
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*
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* Heavily based on PCI quirks handling which is
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*
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* Copyright (c) 1999 Martin Mares <mj@ucw.cz>
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/slab.h>
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#include <linux/pnp.h>
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#include <linux/io.h>
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#include <linux/kallsyms.h>
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#include "base.h"
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static void quirk_awe32_resources(struct pnp_dev *dev)
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{
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struct pnp_port *port, *port2, *port3;
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struct pnp_option *res = dev->dependent;
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/*
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* Unfortunately the isapnp_add_port_resource is too tightly bound
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* into the PnP discovery sequence, and cannot be used. Link in the
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* two extra ports (at offset 0x400 and 0x800 from the one given) by
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* hand.
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*/
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for (; res; res = res->next) {
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port2 = pnp_alloc(sizeof(struct pnp_port));
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if (!port2)
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return;
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port3 = pnp_alloc(sizeof(struct pnp_port));
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if (!port3) {
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kfree(port2);
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return;
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}
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port = res->port;
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memcpy(port2, port, sizeof(struct pnp_port));
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memcpy(port3, port, sizeof(struct pnp_port));
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port->next = port2;
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port2->next = port3;
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port2->min += 0x400;
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port2->max += 0x400;
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port3->min += 0x800;
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port3->max += 0x800;
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}
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printk(KERN_INFO "pnp: AWE32 quirk - adding two ports\n");
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}
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static void quirk_cmi8330_resources(struct pnp_dev *dev)
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{
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struct pnp_option *res = dev->dependent;
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unsigned long tmp;
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for (; res; res = res->next) {
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struct pnp_irq *irq;
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struct pnp_dma *dma;
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for (irq = res->irq; irq; irq = irq->next) { // Valid irqs are 5, 7, 10
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tmp = 0x04A0;
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bitmap_copy(irq->map, &tmp, 16); // 0000 0100 1010 0000
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}
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for (dma = res->dma; dma; dma = dma->next) // Valid 8bit dma channels are 1,3
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if ((dma->flags & IORESOURCE_DMA_TYPE_MASK) ==
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IORESOURCE_DMA_8BIT)
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dma->map = 0x000A;
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}
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printk(KERN_INFO "pnp: CMI8330 quirk - fixing interrupts and dma\n");
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}
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static void quirk_sb16audio_resources(struct pnp_dev *dev)
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{
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struct pnp_port *port;
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struct pnp_option *res = dev->dependent;
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int changed = 0;
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/*
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* The default range on the mpu port for these devices is 0x388-0x388.
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* Here we increase that range so that two such cards can be
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* auto-configured.
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*/
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for (; res; res = res->next) {
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port = res->port;
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if (!port)
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continue;
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port = port->next;
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if (!port)
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continue;
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port = port->next;
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if (!port)
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continue;
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if (port->min != port->max)
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continue;
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port->max += 0x70;
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changed = 1;
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}
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if (changed)
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printk(KERN_INFO
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"pnp: SB audio device quirk - increasing port range\n");
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}
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/*
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* PnP Quirks
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* Cards or devices that need some tweaking due to incomplete resource info
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*/
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static struct pnp_fixup pnp_fixups[] = {
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/* Soundblaster awe io port quirk */
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{"CTL0021", quirk_awe32_resources},
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{"CTL0022", quirk_awe32_resources},
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{"CTL0023", quirk_awe32_resources},
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/* CMI 8330 interrupt and dma fix */
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{"@X@0001", quirk_cmi8330_resources},
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/* Soundblaster audio device io port range quirk */
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{"CTL0001", quirk_sb16audio_resources},
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{"CTL0031", quirk_sb16audio_resources},
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{"CTL0041", quirk_sb16audio_resources},
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{"CTL0042", quirk_sb16audio_resources},
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{"CTL0043", quirk_sb16audio_resources},
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{"CTL0044", quirk_sb16audio_resources},
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{"CTL0045", quirk_sb16audio_resources},
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{""}
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};
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void pnp_fixup_device(struct pnp_dev *dev)
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{
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int i = 0;
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void (*quirk)(struct pnp_dev *);
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while (*pnp_fixups[i].id) {
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if (compare_pnp_id(dev->id, pnp_fixups[i].id)) {
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quirk = pnp_fixups[i].quirk_function;
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#ifdef DEBUG
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dev_dbg(&dev->dev, "calling quirk 0x%p", quirk);
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print_fn_descriptor_symbol(": %s()\n",
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(unsigned long) *quirk);
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#endif
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(*quirk)(dev);
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}
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i++;
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}
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}
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