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/home/lenb/src/to-linus branch 'acpi-2.6.12'

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This commit is contained in:
Len Brown
2005-07-29 23:31:17 -04:00
parent 577a4f8102 87bec66b96
commit d6ac1a7910
14 changed files with 979 additions and 232 deletions
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85
drivers/acpi/pci_irq.c
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@@ -269,7 +269,51 @@ acpi_pci_irq_del_prt (int segment, int bus)
/* --------------------------------------------------------------------------
PCI Interrupt Routing Support
-------------------------------------------------------------------------- */
typedef int (*irq_lookup_func)(struct acpi_prt_entry *, int *, int *, char **);
static int
acpi_pci_allocate_irq(struct acpi_prt_entry *entry,
int *edge_level,
int *active_high_low,
char **link)
{
int irq;
ACPI_FUNCTION_TRACE("acpi_pci_allocate_irq");
if (entry->link.handle) {
irq = acpi_pci_link_allocate_irq(entry->link.handle,
entry->link.index, edge_level, active_high_low, link);
if (irq < 0) {
ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid IRQ link routing entry\n"));
return_VALUE(-1);
}
} else {
irq = entry->link.index;
*edge_level = ACPI_LEVEL_SENSITIVE;
*active_high_low = ACPI_ACTIVE_LOW;
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found IRQ %d\n", irq));
return_VALUE(irq);
}
static int
acpi_pci_free_irq(struct acpi_prt_entry *entry,
int *edge_level,
int *active_high_low,
char **link)
{
int irq;
ACPI_FUNCTION_TRACE("acpi_pci_free_irq");
if (entry->link.handle) {
irq = acpi_pci_link_free_irq(entry->link.handle);
} else {
irq = entry->link.index;
}
return_VALUE(irq);
}
/*
* acpi_pci_irq_lookup
* success: return IRQ >= 0
@@ -282,12 +326,13 @@ acpi_pci_irq_lookup (
int pin,
int *edge_level,
int *active_high_low,
char **link)
char **link,
irq_lookup_func func)
{
struct acpi_prt_entry *entry = NULL;
int segment = pci_domain_nr(bus);
int bus_nr = bus->number;
int irq;
int ret;
ACPI_FUNCTION_TRACE("acpi_pci_irq_lookup");
@@ -301,22 +346,8 @@ acpi_pci_irq_lookup (
return_VALUE(-1);
}
if (entry->link.handle) {
irq = acpi_pci_link_get_irq(entry->link.handle,
entry->link.index, edge_level, active_high_low, link);
if (irq < 0) {
ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Invalid IRQ link routing entry\n"));
return_VALUE(-1);
}
} else {
irq = entry->link.index;
*edge_level = ACPI_LEVEL_SENSITIVE;
*active_high_low = ACPI_ACTIVE_LOW;
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found IRQ %d\n", irq));
return_VALUE(irq);
ret = func(entry, edge_level, active_high_low, link);
return_VALUE(ret);
}
/*
@@ -330,7 +361,8 @@ acpi_pci_irq_derive (
int pin,
int *edge_level,
int *active_high_low,
char **link)
char **link,
irq_lookup_func func)
{
struct pci_dev *bridge = dev;
int irq = -1;
@@ -363,7 +395,7 @@ acpi_pci_irq_derive (
}
irq = acpi_pci_irq_lookup(bridge->bus, PCI_SLOT(bridge->devfn),
pin, edge_level, active_high_low, link);
pin, edge_level, active_high_low, link, func);
}
if (irq < 0) {
@@ -415,7 +447,7 @@ acpi_pci_irq_enable (
* values override any BIOS-assigned IRQs set during boot.
*/
irq = acpi_pci_irq_lookup(dev->bus, PCI_SLOT(dev->devfn), pin,
&edge_level, &active_high_low, &link);
&edge_level, &active_high_low, &link, acpi_pci_allocate_irq);
/*
* If no PRT entry was found, we'll try to derive an IRQ from the
@@ -423,7 +455,7 @@ acpi_pci_irq_enable (
*/
if (irq < 0)
irq = acpi_pci_irq_derive(dev, pin, &edge_level,
&active_high_low, &link);
&active_high_low, &link, acpi_pci_allocate_irq);
/*
* No IRQ known to the ACPI subsystem - maybe the BIOS /
@@ -462,7 +494,9 @@ acpi_pci_irq_enable (
EXPORT_SYMBOL(acpi_pci_irq_enable);
#ifdef CONFIG_ACPI_DEALLOCATE_IRQ
/* FIXME: implement x86/x86_64 version */
void __attribute__((weak)) acpi_unregister_gsi(u32 i) {}
void
acpi_pci_irq_disable (
struct pci_dev *dev)
@@ -489,14 +523,14 @@ acpi_pci_irq_disable (
* First we check the PCI IRQ routing table (PRT) for an IRQ.
*/
gsi = acpi_pci_irq_lookup(dev->bus, PCI_SLOT(dev->devfn), pin,
&edge_level, &active_high_low, NULL);
&edge_level, &active_high_low, NULL, acpi_pci_free_irq);
/*
* If no PRT entry was found, we'll try to derive an IRQ from the
* device's parent bridge.
*/
if (gsi < 0)
gsi = acpi_pci_irq_derive(dev, pin,
&edge_level, &active_high_low, NULL);
&edge_level, &active_high_low, NULL, acpi_pci_free_irq);
if (gsi < 0)
return_VOID;
@@ -512,4 +546,3 @@ acpi_pci_irq_disable (
return_VOID;
}
#endif /* CONFIG_ACPI_DEALLOCATE_IRQ */