Move irq_routing_table from x86 to generic.

There is nothing really x86-specific there, other platforms use
ACPI interrupt routing for PCI too.

Change-Id: Ib02e2917902a161c3d79a1049bcd16ba40bb7814
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5277
Reviewed-by: David Karoly <karolyd577@gmail.com>
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>

src/system/kernel/arch/generic/acpi_irq_routing_table.cpp

@@ -7,7 +7,7 @@
  */
 
 
-#include "irq_routing_table.h"
+#include "acpi_irq_routing_table.h"
 
 #include "acpi.h"
 
@@ -34,7 +34,11 @@ const char* kACPIPciExpressRootName = "PNP0A08";
 static const uint8 kMaxPCIFunctionCount = 8;
 static const uint8 kMaxPCIDeviceCount = 32;
 	// TODO: actually this is mechanism dependent
+#if defined(__i386__) || defined(__x86_64__)
 static const uint8 kMaxISAInterrupts = 16;
+#else
+static const uint8 kMaxISAInterrupts = 0;
+#endif
 
 irq_descriptor::irq_descriptor()
 	:

src/system/kernel/arch/x86/Jamfile

@@ -13,6 +13,7 @@ UsePrivateKernelHeaders ;
 UsePrivateHeaders shared ;
 UsePrivateHeaders [ FDirName system arch x86 ] ;
 
+SEARCH_SOURCE += [ FDirName $(SUBDIR) $(DOTDOT) generic ] ;
 SEARCH_SOURCE += [ FDirName $(SUBDIR) paging ] ;
 SEARCH_SOURCE += [ FDirName $(SUBDIR) timers ] ;
 
@@ -92,7 +93,7 @@ local archGenericSources =
 	arch_vm_translation_map.cpp
 	apic.cpp
 	ioapic.cpp
-	irq_routing_table.cpp
+	acpi_irq_routing_table.cpp
 	msi.cpp
 	pic.cpp
 

src/system/kernel/arch/x86/ioapic.cpp

@@ -8,7 +8,7 @@
 #include <int.h>
 #include <vm/vm.h>
 
-#include "irq_routing_table.h"
+#include "acpi_irq_routing_table.h"
 
 #include <ACPI.h>
 #include <AutoDeleter.h>