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Implement a very naive configure_link_device() function that just blindly sets 

the first possible configuration. This will probably result in a "everything
mapped to a single IRQ" situation, but should get systems that make use of link
devices in APIC mode at least running.
To make more sensible decisions the interface has to be changed next as it
currently doesn't allow to get anything but the very first possible config.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@41384 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Michael Lotz 2011-05-08 13:15:26 +00:00
parent 2a127b718c
commit d3e3ae8edc
1 changed files with 23 additions and 2 deletions
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25
src/system/kernel/arch/x86/irq_routing_table.cpp
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@ -134,6 +134,27 @@ update_pci_info_for_entry(pci_module_info* pci, irq_routing_entry& entry)
}
static status_t
configure_link_device(acpi_module_info* acpi, acpi_handle handle,
irq_descriptor& result)
{
status_t status = read_possible_irq(acpi, handle, &result);
if (status != B_OK) {
dprintf("failed to read possible IRQ configuration of link device\n");
// We could try returning the current config as a fallback, but it most
// probably is invalid as it points to the legacy config the BIOS has
// done in PIC mode.
return status;
}
// TODO: Blindly set the first possible configuration (obviously not what we
// want to do as it will most probably result in a "everything to single
// IRQ" config; anyway just to get things going...)
return set_current_irq(acpi, handle, &result);
}
static status_t
evaluate_integer(acpi_module_info* acpi, acpi_handle handle,
const char* method, uint64& value)
@ -234,9 +255,9 @@ read_irq_routing_table_recursive(acpi_module_info* acpi, pci_module_info* pci,
irqEntry.trigger_mode = B_LEVEL_TRIGGERED;
} else {
irq_descriptor irqDescriptor;
status = read_current_irq(acpi, source, &irqDescriptor);
status = configure_link_device(acpi, source, irqDescriptor);
if (status != B_OK) {
dprintf("failed to read current IRQ of link device\n");
dprintf("failed to configure link device\n");
irqEntry.irq = 0;
} else {
irqEntry.irq = irqDescriptor.irq;