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drivers/pnp/quirks.c
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/* * This file contains quirk handling code for PnP devices * Some devices do not report all their resources, and need to have extra * resources added. This is most easily accomplished at initialisation time * when building up the resource structure for the first time. * * Copyright (c) 2000 Peter Denison <peterd@pnd-pc.demon.co.uk> |
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* Copyright (C) 2008 Hewlett-Packard Development Company, L.P. * Bjorn Helgaas <bjorn.helgaas@hp.com> |
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* * Heavily based on PCI quirks handling which is * * Copyright (c) 1999 Martin Mares <mj@ucw.cz> */ |
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#include <linux/types.h> #include <linux/kernel.h> #include <linux/string.h> #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_add_ports(struct pnp_dev *dev, struct pnp_option *option, unsigned int offset) { struct pnp_option *new_option; new_option = kmalloc(sizeof(struct pnp_option), GFP_KERNEL); if (!new_option) { dev_err(&dev->dev, "couldn't add ioport region to option set " "%d ", pnp_option_set(option)); return; } *new_option = *option; new_option->u.port.min += offset; new_option->u.port.max += offset; list_add(&new_option->list, &option->list); dev_info(&dev->dev, "added ioport region %#llx-%#llx to set %d ", (unsigned long long) new_option->u.port.min, (unsigned long long) new_option->u.port.max, pnp_option_set(option)); } |
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static void quirk_awe32_resources(struct pnp_dev *dev) { |
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struct pnp_option *option; unsigned int set = ~0; |
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/* |
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* Add two extra ioport regions (at offset 0x400 and 0x800 from the * one given) to every dependent option set. |
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*/ |
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list_for_each_entry(option, &dev->options, list) { if (pnp_option_is_dependent(option) && pnp_option_set(option) != set) { set = pnp_option_set(option); quirk_awe32_add_ports(dev, option, 0x800); quirk_awe32_add_ports(dev, option, 0x400); |
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} |
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} |
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} static void quirk_cmi8330_resources(struct pnp_dev *dev) { |
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struct pnp_option *option; struct pnp_irq *irq; struct pnp_dma *dma; |
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list_for_each_entry(option, &dev->options, list) { if (!pnp_option_is_dependent(option)) continue; |
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if (option->type == IORESOURCE_IRQ) { irq = &option->u.irq; bitmap_zero(irq->map.bits, PNP_IRQ_NR); __set_bit(5, irq->map.bits); __set_bit(7, irq->map.bits); __set_bit(10, irq->map.bits); dev_info(&dev->dev, "set possible IRQs in " "option set %d to 5, 7, 10 ", pnp_option_set(option)); } else if (option->type == IORESOURCE_DMA) { dma = &option->u.dma; |
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if ((dma->flags & IORESOURCE_DMA_TYPE_MASK) == |
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IORESOURCE_DMA_8BIT && dma->map != 0x0A) { dev_info(&dev->dev, "changing possible " "DMA channel mask in option set %d " "from %#02x to 0x0A (1, 3) ", pnp_option_set(option), dma->map); dma->map = 0x0A; } |
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} |
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} |
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} static void quirk_sb16audio_resources(struct pnp_dev *dev) { |
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struct pnp_option *option; unsigned int prev_option_flags = ~0, n = 0; |
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struct pnp_port *port; |
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/* |
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* The default range on the OPL port for these devices is 0x388-0x388. |
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* Here we increase that range so that two such cards can be * auto-configured. */ |
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list_for_each_entry(option, &dev->options, list) { if (prev_option_flags != option->flags) { prev_option_flags = option->flags; n = 0; } |
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if (pnp_option_is_dependent(option) && option->type == IORESOURCE_IO) { n++; port = &option->u.port; if (n == 3 && port->min == port->max) { port->max += 0x70; dev_info(&dev->dev, "increased option port " "range from %#llx-%#llx to " "%#llx-%#llx ", (unsigned long long) port->min, (unsigned long long) port->min, (unsigned long long) port->min, (unsigned long long) port->max); } } |
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} |
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} |
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static struct pnp_option *pnp_clone_dependent_set(struct pnp_dev *dev, unsigned int set) |
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{ |
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struct pnp_option *tail = NULL, *first_new_option = NULL; struct pnp_option *option, *new_option; unsigned int flags; |
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list_for_each_entry(option, &dev->options, list) { if (pnp_option_is_dependent(option)) tail = option; } if (!tail) { dev_err(&dev->dev, "no dependent option sets "); return NULL; } |
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flags = pnp_new_dependent_set(dev, PNP_RES_PRIORITY_FUNCTIONAL); list_for_each_entry(option, &dev->options, list) { if (pnp_option_is_dependent(option) && pnp_option_set(option) == set) { new_option = kmalloc(sizeof(struct pnp_option), GFP_KERNEL); if (!new_option) { dev_err(&dev->dev, "couldn't clone dependent " "set %d ", set); return NULL; } |
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*new_option = *option; new_option->flags = flags; if (!first_new_option) first_new_option = new_option; |
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list_add(&new_option->list, &tail->list); tail = new_option; |
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} |
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} |
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return first_new_option; |
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} |
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static void quirk_add_irq_optional_dependent_sets(struct pnp_dev *dev) |
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{ |
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struct pnp_option *new_option; unsigned int num_sets, i, set; |
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struct pnp_irq *irq; |
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num_sets = dev->num_dependent_sets; for (i = 0; i < num_sets; i++) { new_option = pnp_clone_dependent_set(dev, i); if (!new_option) return; |
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set = pnp_option_set(new_option); while (new_option && pnp_option_set(new_option) == set) { if (new_option->type == IORESOURCE_IRQ) { irq = &new_option->u.irq; irq->flags |= IORESOURCE_IRQ_OPTIONAL; } dbg_pnp_show_option(dev, new_option); new_option = list_entry(new_option->list.next, struct pnp_option, list); } |
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dev_info(&dev->dev, "added dependent option set %d (same as " "set %d except IRQ optional) ", set, i); } |
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} |
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static void quirk_ad1815_mpu_resources(struct pnp_dev *dev) |
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{ |
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struct pnp_option *option; struct pnp_irq *irq = NULL; unsigned int independent_irqs = 0; list_for_each_entry(option, &dev->options, list) { if (option->type == IORESOURCE_IRQ && !pnp_option_is_dependent(option)) { independent_irqs++; irq = &option->u.irq; } } |
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if (independent_irqs != 1) |
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return; |
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irq->flags |= IORESOURCE_IRQ_OPTIONAL; dev_info(&dev->dev, "made independent IRQ optional "); |
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} |
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#include <linux/pci.h> static void quirk_system_pci_resources(struct pnp_dev *dev) { struct pci_dev *pdev = NULL; |
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struct resource *res; |
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resource_size_t pnp_start, pnp_end, pci_start, pci_end; int i, j; /* * Some BIOSes have PNP motherboard devices with resources that * partially overlap PCI BARs. The PNP system driver claims these * motherboard resources, which prevents the normal PCI driver from * requesting them later. * * This patch disables the PNP resources that conflict with PCI BARs * so they won't be claimed by the PNP system driver. */ for_each_pci_dev(pdev) { for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
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unsigned long type; |
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type = pci_resource_flags(pdev, i) & (IORESOURCE_IO | IORESOURCE_MEM); if (!type || pci_resource_len(pdev, i) == 0) |
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continue; pci_start = pci_resource_start(pdev, i); pci_end = pci_resource_end(pdev, i); |
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for (j = 0; |
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(res = pnp_get_resource(dev, type, j)); j++) { |
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if (res->start == 0 && res->end == 0) |
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continue; |
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pnp_start = res->start; pnp_end = res->end; |
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/* * If the PNP region doesn't overlap the PCI * region at all, there's no problem. */ if (pnp_end < pci_start || pnp_start > pci_end) continue; /* * If the PNP region completely encloses (or is * at least as large as) the PCI region, that's * also OK. For example, this happens when the * PNP device describes a bridge with PCI * behind it. */ if (pnp_start <= pci_start && pnp_end >= pci_end) continue; /* * Otherwise, the PNP region overlaps *part* of * the PCI region, and that might prevent a PCI * driver from requesting its resources. */ |
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dev_warn(&dev->dev, "disabling %pR because it overlaps " "%s BAR %d %pR ", res, |
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pci_name(pdev), i, &pdev->resource[i]); |
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res->flags |= IORESOURCE_DISABLED; |
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} } } } |
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/* * PnP Quirks * Cards or devices that need some tweaking due to incomplete resource info */ static struct pnp_fixup pnp_fixups[] = { /* Soundblaster awe io port quirk */ |
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{"CTL0021", quirk_awe32_resources}, {"CTL0022", quirk_awe32_resources}, {"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}, {"CTL0031", quirk_sb16audio_resources}, {"CTL0041", quirk_sb16audio_resources}, {"CTL0042", quirk_sb16audio_resources}, {"CTL0043", quirk_sb16audio_resources}, {"CTL0044", quirk_sb16audio_resources}, {"CTL0045", quirk_sb16audio_resources}, |
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/* Add IRQ-optional MPU options */ |
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{"ADS7151", quirk_ad1815_mpu_resources}, |
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{"ADS7181", quirk_add_irq_optional_dependent_sets}, {"AZT0002", quirk_add_irq_optional_dependent_sets}, |
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/* PnP resources that might overlap PCI BARs */ |
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{"PNP0c01", quirk_system_pci_resources}, {"PNP0c02", quirk_system_pci_resources}, |
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{""} |
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}; void pnp_fixup_device(struct pnp_dev *dev) { |
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struct pnp_fixup *f; |
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for (f = pnp_fixups; *f->id; f++) { if (!compare_pnp_id(dev->id, f->id)) continue; |
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pnp_dbg(&dev->dev, "%s: calling %pF ", f->id, |
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f->quirk_function); |
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f->quirk_function(dev); |
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} } |