#include <linux/init.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
-#include <linux/irq.h>
+#include <linux/dmi.h>
#include <asm/io.h>
#include <asm/smp.h>
#include <asm/io_apic.h>
-#include <asm/hw_irq.h>
+#include <linux/irq.h>
+#include <linux/acpi.h>
#include "pci.h"
#define PIRQ_SIGNATURE (('$' << 0) + ('P' << 8) + ('I' << 16) + ('R' << 24))
#define PIRQ_VERSION 0x0100
-int broken_hp_bios_irq9;
+static int broken_hp_bios_irq9;
+static int acer_tm360_irqrouting;
static struct irq_routing_table *pirq_table;
+static int pirq_enable_irq(struct pci_dev *dev);
+
/*
* Never use: 0, 1, 2 (timer, keyboard, and cascade)
* Avoid using: 13, 14 and 15 (FP error and IDE).
};
int (*pcibios_enable_irq)(struct pci_dev *dev) = NULL;
+void (*pcibios_disable_irq)(struct pci_dev *dev) = NULL;
+
+/*
+ * Check passed address for the PCI IRQ Routing Table signature
+ * and perform checksum verification.
+ */
+
+static inline struct irq_routing_table * pirq_check_routing_table(u8 *addr)
+{
+ struct irq_routing_table *rt;
+ int i;
+ u8 sum;
+
+ rt = (struct irq_routing_table *) addr;
+ if (rt->signature != PIRQ_SIGNATURE ||
+ rt->version != PIRQ_VERSION ||
+ rt->size % 16 ||
+ rt->size < sizeof(struct irq_routing_table))
+ return NULL;
+ sum = 0;
+ for (i=0; i < rt->size; i++)
+ sum += addr[i];
+ if (!sum) {
+ DBG(KERN_DEBUG "PCI: Interrupt Routing Table found at 0x%p\n", rt);
+ return rt;
+ }
+ return NULL;
+}
+
+
/*
* Search 0xf0000 -- 0xfffff for the PCI IRQ Routing Table.
{
u8 *addr;
struct irq_routing_table *rt;
- int i;
- u8 sum;
+ if (pirq_table_addr) {
+ rt = pirq_check_routing_table((u8 *) __va(pirq_table_addr));
+ if (rt)
+ return rt;
+ printk(KERN_WARNING "PCI: PIRQ table NOT found at pirqaddr\n");
+ }
for(addr = (u8 *) __va(0xf0000); addr < (u8 *) __va(0x100000); addr += 16) {
- rt = (struct irq_routing_table *) addr;
- if (rt->signature != PIRQ_SIGNATURE ||
- rt->version != PIRQ_VERSION ||
- rt->size % 16 ||
- rt->size < sizeof(struct irq_routing_table))
- continue;
- sum = 0;
- for(i=0; i<rt->size; i++)
- sum += addr[i];
- if (!sum) {
- DBG("PCI: Interrupt Routing Table found at 0x%p\n", rt);
+ rt = pirq_check_routing_table(addr);
+ if (rt)
return rt;
- }
}
return NULL;
}
#ifdef DEBUG
{
int j;
- DBG("%02x:%02x slot=%02x", e->bus, e->devfn/8, e->slot);
+ DBG(KERN_DEBUG "%02x:%02x slot=%02x", e->bus, e->devfn/8, e->slot);
for(j=0; j<4; j++)
DBG(" %d:%02x/%04x", j, e->irq[j].link, e->irq[j].bitmap);
DBG("\n");
{
unsigned char mask = 1 << (irq & 7);
unsigned int port = 0x4d0 + (irq >> 3);
- unsigned char val = inb(port);
+ unsigned char val;
+ static u16 eisa_irq_mask;
+ if (irq >= 16 || (1 << irq) & eisa_irq_mask)
+ return;
+
+ eisa_irq_mask |= (1 << irq);
+ printk(KERN_DEBUG "PCI: setting IRQ %u as level-triggered\n", irq);
+ val = inb(port);
if (!(val & mask)) {
- DBG(" -> edge");
+ DBG(KERN_DEBUG " -> edge");
outb(val | mask, port);
}
}
return 1;
}
+/*
+ * The VIA pirq rules are nibble-based, like ALI,
+ * but without the ugly irq number munging.
+ * However, for 82C586, nibble map is different .
+ */
+static int pirq_via586_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
+{
+ static unsigned int pirqmap[4] = { 3, 2, 5, 1 };
+ return read_config_nybble(router, 0x55, pirqmap[pirq-1]);
+}
+
+static int pirq_via586_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
+{
+ static unsigned int pirqmap[4] = { 3, 2, 5, 1 };
+ write_config_nybble(router, 0x55, pirqmap[pirq-1], irq);
+ return 1;
+}
+
/*
* ITE 8330G pirq rules are nibble-based
* FIXME: pirqmap may be { 1, 0, 3, 2 },
#endif
-
static __init int intel_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
{
+ static struct pci_device_id pirq_440gx[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443GX_0) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443GX_2) },
+ { },
+ };
+
/* 440GX has a proprietary PIRQ router -- don't use it */
- if ( pci_find_device(PCI_VENDOR_ID_INTEL,
- PCI_DEVICE_ID_INTEL_82443GX_0, NULL) ||
- pci_find_device(PCI_VENDOR_ID_INTEL,
- PCI_DEVICE_ID_INTEL_82443GX_2, NULL))
+ if (pci_dev_present(pirq_440gx))
return 0;
switch(device)
case PCI_DEVICE_ID_INTEL_ESB_1:
case PCI_DEVICE_ID_INTEL_ICH6_0:
case PCI_DEVICE_ID_INTEL_ICH6_1:
+ case PCI_DEVICE_ID_INTEL_ICH7_0:
+ case PCI_DEVICE_ID_INTEL_ICH7_1:
+ case PCI_DEVICE_ID_INTEL_ICH7_30:
+ case PCI_DEVICE_ID_INTEL_ICH7_31:
+ case PCI_DEVICE_ID_INTEL_ESB2_0:
+ case PCI_DEVICE_ID_INTEL_ICH8_0:
+ case PCI_DEVICE_ID_INTEL_ICH8_1:
+ case PCI_DEVICE_ID_INTEL_ICH8_2:
+ case PCI_DEVICE_ID_INTEL_ICH8_3:
+ case PCI_DEVICE_ID_INTEL_ICH8_4:
r->name = "PIIX/ICH";
r->get = pirq_piix_get;
r->set = pirq_piix_set;
return 0;
}
-static __init int via_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
+static __init int via_router_probe(struct irq_router *r,
+ struct pci_dev *router, u16 device)
{
/* FIXME: We should move some of the quirk fixup stuff here */
- switch(device)
- {
- case PCI_DEVICE_ID_VIA_82C586_0:
- case PCI_DEVICE_ID_VIA_82C596:
+
+ /*
+ * work arounds for some buggy BIOSes
+ */
+ if (device == PCI_DEVICE_ID_VIA_82C586_0) {
+ switch(router->device) {
case PCI_DEVICE_ID_VIA_82C686:
- case PCI_DEVICE_ID_VIA_8231:
+ /*
+ * Asus k7m bios wrongly reports 82C686A
+ * as 586-compatible
+ */
+ device = PCI_DEVICE_ID_VIA_82C686;
+ break;
+ case PCI_DEVICE_ID_VIA_8235:
+ /**
+ * Asus a7v-x bios wrongly reports 8235
+ * as 586-compatible
+ */
+ device = PCI_DEVICE_ID_VIA_8235;
+ break;
+ }
+ }
+
+ switch(device) {
+ case PCI_DEVICE_ID_VIA_82C586_0:
+ r->name = "VIA";
+ r->get = pirq_via586_get;
+ r->set = pirq_via586_set;
+ return 1;
+ case PCI_DEVICE_ID_VIA_82C596:
+ case PCI_DEVICE_ID_VIA_82C686:
+ case PCI_DEVICE_ID_VIA_8231:
+ case PCI_DEVICE_ID_VIA_8233A:
+ case PCI_DEVICE_ID_VIA_8235:
+ case PCI_DEVICE_ID_VIA_8237:
/* FIXME: add new ones for 8233/5 */
- r->name = "VIA";
- r->get = pirq_via_get;
- r->set = pirq_via_set;
- return 1;
+ r->name = "VIA";
+ r->get = pirq_via_get;
+ r->set = pirq_via_set;
+ return 1;
}
return 0;
}
{
case PCI_DEVICE_ID_AL_M1533:
case PCI_DEVICE_ID_AL_M1563:
- printk("PCI: Using ALI IRQ Router\n");
- r->name = "ALI";
- r->get = pirq_ali_get;
- r->set = pirq_ali_set;
- return 1;
+ printk(KERN_DEBUG "PCI: Using ALI IRQ Router\n");
+ r->name = "ALI";
+ r->get = pirq_ali_get;
+ r->set = pirq_ali_set;
+ return 1;
}
return 0;
}
r->get = NULL;
r->set = NULL;
- DBG("PCI: Attempting to find IRQ router for %04x:%04x\n",
+ DBG(KERN_DEBUG "PCI: Attempting to find IRQ router for %04x:%04x\n",
rt->rtr_vendor, rt->rtr_device);
pirq_router_dev = pci_find_slot(rt->rtr_bus, rt->rtr_devfn);
if (!pirq_router_dev) {
- DBG("PCI: Interrupt router not found at %02x:%02x\n", rt->rtr_bus, rt->rtr_devfn);
+ DBG(KERN_DEBUG "PCI: Interrupt router not found at "
+ "%02x:%02x\n", rt->rtr_bus, rt->rtr_devfn);
return;
}
/* Find IRQ pin */
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
if (!pin) {
- DBG(" -> no interrupt pin\n");
+ DBG(KERN_DEBUG " -> no interrupt pin\n");
return 0;
}
pin = pin - 1;
if (!pirq_table)
return 0;
- DBG("IRQ for %s:%d", pci_name(dev), pin);
+ DBG(KERN_DEBUG "IRQ for %s[%c]", pci_name(dev), 'A' + pin);
info = pirq_get_info(dev);
if (!info) {
- DBG(" -> not found in routing table\n");
+ DBG(" -> not found in routing table\n" KERN_DEBUG);
return 0;
}
pirq = info->irq[pin].link;
mask = info->irq[pin].bitmap;
if (!pirq) {
- DBG(" -> not routed\n");
+ DBG(" -> not routed\n" KERN_DEBUG);
return 0;
}
DBG(" -> PIRQ %02x, mask %04x, excl %04x", pirq, mask, pirq_table->exclusive_irqs);
r->set(pirq_router_dev, dev, pirq, 11);
}
+ /* same for Acer Travelmate 360, but with CB and irq 11 -> 10 */
+ if (acer_tm360_irqrouting && dev->irq == 11 && dev->vendor == PCI_VENDOR_ID_O2) {
+ pirq = 0x68;
+ mask = 0x400;
+ dev->irq = r->get(pirq_router_dev, dev, pirq);
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
+ }
+
/*
* Find the best IRQ to assign: use the one
* reported by the device if possible.
*/
newirq = dev->irq;
- if (!((1 << newirq) & mask)) {
+ if (newirq && !((1 << newirq) & mask)) {
if ( pci_probe & PCI_USE_PIRQ_MASK) newirq = 0;
- else printk(KERN_WARNING "PCI: IRQ %i for device %s doesn't match PIRQ mask - try pci=usepirqmask\n", newirq, pci_name(dev));
+ else printk("\n" KERN_WARNING
+ "PCI: IRQ %i for device %s doesn't match PIRQ mask "
+ "- try pci=usepirqmask\n" KERN_DEBUG, newirq,
+ pci_name(dev));
}
if (!newirq && assign) {
for (i = 0; i < 16; i++) {
printk(KERN_INFO "PCI: %s IRQ %d for device %s\n", msg, irq, pci_name(dev));
/* Update IRQ for all devices with the same pirq value */
- while ((dev2 = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev2)) != NULL) {
+ while ((dev2 = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev2)) != NULL) {
pci_read_config_byte(dev2, PCI_INTERRUPT_PIN, &pin);
if (!pin)
continue;
if ( dev2->irq && dev2->irq != irq && \
(!(pci_probe & PCI_USE_PIRQ_MASK) || \
((1 << dev2->irq) & mask)) ) {
-#ifndef CONFIG_PCI_USE_VECTOR
+#ifndef CONFIG_PCI_MSI
printk(KERN_INFO "IRQ routing conflict for %s, have irq %d, want irq %d\n",
pci_name(dev2), dev2->irq, irq);
#endif
struct pci_dev *dev = NULL;
u8 pin;
- DBG("PCI: IRQ fixup\n");
- while ((dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+ DBG(KERN_DEBUG "PCI: IRQ fixup\n");
+ while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
/*
* If the BIOS has set an out of range IRQ number, just ignore it.
* Also keep track of which IRQ's are already in use.
*/
if (dev->irq >= 16) {
- DBG("%s: ignoring bogus IRQ %d\n", pci_name(dev), dev->irq);
+ DBG(KERN_DEBUG "%s: ignoring bogus IRQ %d\n", pci_name(dev), dev->irq);
dev->irq = 0;
}
/* If the IRQ is already assigned to a PCI device, ignore its ISA use penalty */
}
dev = NULL;
- while ((dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+ while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
#ifdef CONFIG_X86_IO_APIC
/*
irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number,
PCI_SLOT(bridge->devfn), pin);
if (irq >= 0)
- printk(KERN_WARNING "PCI: using PPB(B%d,I%d,P%d) to get irq %d\n",
- bridge->bus->number, PCI_SLOT(bridge->devfn), pin, irq);
+ printk(KERN_WARNING "PCI: using PPB %s[%c] to get irq %d\n",
+ pci_name(bridge), 'A' + pin, irq);
}
if (irq >= 0) {
if (use_pci_vector() &&
!platform_legacy_irq(irq))
irq = IO_APIC_VECTOR(irq);
- printk(KERN_INFO "PCI->APIC IRQ transform: (B%d,I%d,P%d) -> %d\n",
- dev->bus->number, PCI_SLOT(dev->devfn), pin, irq);
+ printk(KERN_INFO "PCI->APIC IRQ transform: %s[%c] -> IRQ %d\n",
+ pci_name(dev), 'A' + pin, irq);
dev->irq = irq;
}
}
}
}
+/*
+ * Work around broken HP Pavilion Notebooks which assign USB to
+ * IRQ 9 even though it is actually wired to IRQ 11
+ */
+static int __init fix_broken_hp_bios_irq9(struct dmi_system_id *d)
+{
+ if (!broken_hp_bios_irq9) {
+ broken_hp_bios_irq9 = 1;
+ printk(KERN_INFO "%s detected - fixing broken IRQ routing\n", d->ident);
+ }
+ return 0;
+}
+
+/*
+ * Work around broken Acer TravelMate 360 Notebooks which assign
+ * Cardbus to IRQ 11 even though it is actually wired to IRQ 10
+ */
+static int __init fix_acer_tm360_irqrouting(struct dmi_system_id *d)
+{
+ if (!acer_tm360_irqrouting) {
+ acer_tm360_irqrouting = 1;
+ printk(KERN_INFO "%s detected - fixing broken IRQ routing\n", d->ident);
+ }
+ return 0;
+}
+
+static struct dmi_system_id __initdata pciirq_dmi_table[] = {
+ {
+ .callback = fix_broken_hp_bios_irq9,
+ .ident = "HP Pavilion N5400 Series Laptop",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_BIOS_VERSION, "GE.M1.03"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "HP Pavilion Notebook Model GE"),
+ DMI_MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736"),
+ },
+ },
+ {
+ .callback = fix_acer_tm360_irqrouting,
+ .ident = "Acer TravelMate 36x Laptop",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
+ },
+ },
+ { }
+};
+
static int __init pcibios_irq_init(void)
{
- DBG("PCI: IRQ init\n");
+ DBG(KERN_DEBUG "PCI: IRQ init\n");
if (pcibios_enable_irq || raw_pci_ops == NULL)
return 0;
+ dmi_check_system(pciirq_dmi_table);
+
pirq_table = pirq_find_routing_table();
#ifdef CONFIG_PCI_BIOS
subsys_initcall(pcibios_irq_init);
-void pcibios_penalize_isa_irq(int irq)
+static void pirq_penalize_isa_irq(int irq, int active)
{
/*
* If any ISAPnP device reports an IRQ in its list of possible
* IRQ's, we try to avoid assigning it to PCI devices.
*/
- pirq_penalty[irq] += 100;
+ if (irq < 16) {
+ if (active)
+ pirq_penalty[irq] += 1000;
+ else
+ pirq_penalty[irq] += 100;
+ }
}
-int pirq_enable_irq(struct pci_dev *dev)
+void pcibios_penalize_isa_irq(int irq, int active)
+{
+#ifdef CONFIG_ACPI
+ if (!acpi_noirq)
+ acpi_penalize_isa_irq(irq, active);
+ else
+#endif
+ pirq_penalize_isa_irq(irq, active);
+}
+
+static int pirq_enable_irq(struct pci_dev *dev)
{
u8 pin;
- extern int interrupt_line_quirk;
struct pci_dev *temp_dev;
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
if (pin && !pcibios_lookup_irq(dev, 1) && !dev->irq) {
- char *msg;
- msg = "";
+ char *msg = "";
+
+ pin--; /* interrupt pins are numbered starting from 1 */
+
if (io_apic_assign_pci_irqs) {
int irq;
- if (pin) {
- pin--; /* interrupt pins are numbered starting from 1 */
- irq = IO_APIC_get_PCI_irq_vector(dev->bus->number, PCI_SLOT(dev->devfn), pin);
- /*
- * Busses behind bridges are typically not listed in the MP-table.
- * In this case we have to look up the IRQ based on the parent bus,
- * parent slot, and pin number. The SMP code detects such bridged
- * busses itself so we should get into this branch reliably.
- */
- temp_dev = dev;
- while (irq < 0 && dev->bus->parent) { /* go back to the bridge */
- struct pci_dev * bridge = dev->bus->self;
-
- pin = (pin + PCI_SLOT(dev->devfn)) % 4;
- irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number,
- PCI_SLOT(bridge->devfn), pin);
- if (irq >= 0)
- printk(KERN_WARNING "PCI: using PPB(B%d,I%d,P%d) to get irq %d\n",
- bridge->bus->number, PCI_SLOT(bridge->devfn), pin, irq);
- dev = bridge;
- }
- dev = temp_dev;
- if (irq >= 0) {
-#ifdef CONFIG_PCI_USE_VECTOR
- if (!platform_legacy_irq(irq))
- irq = IO_APIC_VECTOR(irq);
-#endif
- printk(KERN_INFO "PCI->APIC IRQ transform: (B%d,I%d,P%d) -> %d\n",
- dev->bus->number, PCI_SLOT(dev->devfn), pin, irq);
- dev->irq = irq;
- return 0;
- } else
- msg = " Probably buggy MP table.";
+ irq = IO_APIC_get_PCI_irq_vector(dev->bus->number, PCI_SLOT(dev->devfn), pin);
+ /*
+ * Busses behind bridges are typically not listed in the MP-table.
+ * In this case we have to look up the IRQ based on the parent bus,
+ * parent slot, and pin number. The SMP code detects such bridged
+ * busses itself so we should get into this branch reliably.
+ */
+ temp_dev = dev;
+ while (irq < 0 && dev->bus->parent) { /* go back to the bridge */
+ struct pci_dev * bridge = dev->bus->self;
+
+ pin = (pin + PCI_SLOT(dev->devfn)) % 4;
+ irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number,
+ PCI_SLOT(bridge->devfn), pin);
+ if (irq >= 0)
+ printk(KERN_WARNING "PCI: using PPB %s[%c] to get irq %d\n",
+ pci_name(bridge), 'A' + pin, irq);
+ dev = bridge;
}
+ dev = temp_dev;
+ if (irq >= 0) {
+#ifdef CONFIG_PCI_MSI
+ if (!platform_legacy_irq(irq))
+ irq = IO_APIC_VECTOR(irq);
+#endif
+ printk(KERN_INFO "PCI->APIC IRQ transform: %s[%c] -> IRQ %d\n",
+ pci_name(dev), 'A' + pin, irq);
+ dev->irq = irq;
+ return 0;
+ } else
+ msg = " Probably buggy MP table.";
} else if (pci_probe & PCI_BIOS_IRQ_SCAN)
msg = "";
else
msg = " Please try using pci=biosirq.";
-
+
/* With IDE legacy devices the IRQ lookup failure is not a problem.. */
if (dev->class >> 8 == PCI_CLASS_STORAGE_IDE && !(dev->class & 0x5))
return 0;
-
+
printk(KERN_WARNING "PCI: No IRQ known for interrupt pin %c of device %s.%s\n",
- 'A' + pin - 1, pci_name(dev), msg);
+ 'A' + pin, pci_name(dev), msg);
}
- /* VIA bridges use interrupt line for apic/pci steering across
- the V-Link */
- else if (interrupt_line_quirk)
- pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
return 0;
}
git://git.onelab.eu / linux-2.6.git / blobdiff