Fixed ACPI main module for non-haiku targets:

* On these targets, we must load ACPI's modules dependencies ourself!
* Only the main B_ACPI_MODULE_NAME will work on non-Haiku targets, as
the (work-in-progress?) extra ACPI modules (ACPI_ROOT_MODULE_NAME, ACPI_NS_DUMP_MODULE_NAME,
and ACPI_DEVICE_MODULE_NAME) needs Haiku's Device Manager.
* "cat /dev/power/namespace" was successfully tested on a BeOS R5+Bone system.
* My P5W DH Deluxe-based system have a huge ACPI namespace ;-)
* A graphical ACPI Namespace Viewer will be welcomed (Hint) 


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21595 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/kernel/bus_managers/acpi/acpi_busman.c

@@ -7,6 +7,7 @@
 
 #include <ACPI.h>
 #include <dpc.h>
+#include <PCI.h>
 #include <KernelExport.h>
 
 #include <malloc.h>
@@ -27,6 +28,8 @@ status_t acpi_rescan_stub(void);
 extern dpc_module_info *gDPC;
 void *gDPChandle = NULL;
 
+extern pci_module_info *gPCIManager;
+
 struct acpi_module_info acpi_module = {
 	{
 		{
@@ -85,6 +88,20 @@ acpi_std_ops(int32 op,...)
 				return ENOSYS;
 			}
 			
+			#ifndef __HAIKU__
+			{
+				// Once upon a time, there was no module(s) dependency(ies) automatic loading feature.
+				// Let's do it the old way
+				status_t status;
+				
+				status = get_module(B_DPC_MODULE_NAME, (module_info **) &gDPC);
+				if (status != B_OK) return status;
+				
+				status = get_module(B_PCI_MODULE_NAME, (module_info **) &gPCIManager);
+				if (status != B_OK) return status;
+			}
+			#endif
+			
 			gDPChandle = gDPC->new_dpc_queue("acpi_task", B_NORMAL_PRIORITY, 10);
 
 			#ifdef ACPI_DEBUG_OUTPUT
@@ -131,6 +148,13 @@ acpi_std_ops(int32 op,...)
 				gDPChandle = NULL;
 			}
 
+			#ifndef __HAIKU__
+			// Once upon a time, there was no module(s) dependency(ies) automatic UNloading feature.
+			// Let's do it the old way
+			put_module(B_DPC_MODULE_NAME);
+			put_module(B_PCI_MODULE_NAME);
+			#endif
+
 			break;
 		default:
 			return B_ERROR;