sysbus.c File Reference

#include <hal.h>
#include <debug.h>

Include dependency graph for sysbus.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
BOOLEAN NTAPI	HalpTranslateSystemBusAddress (IN PBUS_HANDLER BusHandler, IN PBUS_HANDLER RootHandler, IN PHYSICAL_ADDRESS BusAddress, IN OUT PULONG AddressSpace, OUT PPHYSICAL_ADDRESS TranslatedAddress)
ULONG NTAPI	HalpGetSystemInterruptVector (IN PBUS_HANDLER BusHandler, IN PBUS_HANDLER RootHandler, IN ULONG BusInterruptLevel, IN ULONG BusInterruptVector, OUT PKIRQL Irql, OUT PKAFFINITY Affinity)

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 12 of file sysbus.c.

Function Documentation

HalpGetSystemInterruptVector()

ULONG NTAPI HalpGetSystemInterruptVector	(	IN PBUS_HANDLER	BusHandler,
		IN PBUS_HANDLER	RootHandler,
		IN ULONG	BusInterruptLevel,
		IN ULONG	BusInterruptVector,
		OUT PKIRQL	Irql,
		OUT PKAFFINITY	Affinity
	)

Definition at line 115 of file sysbus.c.

{
    ULONG Vector;
 
    /* Get the root vector */
    Vector = HalpGetRootInterruptVector(BusInterruptLevel,
                                        BusInterruptVector,
                                        Irql,
                                        Affinity);
 
    /* Check if the vector is owned by the HAL and fail if it is */
    if (HalpIDTUsageFlags[Vector].Flags & IDT_REGISTERED) DPRINT1("Vector %lx is ALREADY IN USE!\n", Vector);
    return (HalpIDTUsageFlags[Vector].Flags & IDT_REGISTERED) ? 0 : Vector;
}

Referenced by HalpRegisterInternalBusHandlers().

HalpTranslateSystemBusAddress()

BOOLEAN NTAPI HalpTranslateSystemBusAddress	(	IN PBUS_HANDLER	BusHandler,
		IN PBUS_HANDLER	RootHandler,
		IN PHYSICAL_ADDRESS	BusAddress,
		IN OUT PULONG	AddressSpace,
		OUT PPHYSICAL_ADDRESS	TranslatedAddress
	)

Definition at line 21 of file sysbus.c.

{
    PSUPPORTED_RANGE Range = NULL;
 
    /* Check what kind of address space this is */
    switch (*AddressSpace)
    {
        /* Memory address */
        case 0:
 
            /* Loop all prefetch memory */
            for (Range = &BusHandler->BusAddresses->PrefetchMemory;
                 Range;
                 Range = Range->Next)
            {
                /* Check if it's in a valid range */
                if ((BusAddress.QuadPart >= Range->Base) &&
                    (BusAddress.QuadPart <= Range->Limit))
                {
                    /* Get out */
                    break;
                }
            }
 
            /* Check if we haven't found anything yet */
            if (!Range)
            {
                /* Loop all bus memory */
                for (Range = &BusHandler->BusAddresses->Memory;
                     Range;
                     Range = Range->Next)
                {
                    /* Check if it's in a valid range */
                    if ((BusAddress.QuadPart >= Range->Base) &&
                        (BusAddress.QuadPart <= Range->Limit))
                    {
                        /* Get out */
                        break;
                    }
                }
            }
 
            /* Done */
            break;
 
        /* I/O Space */
        case 1:
 
            /* Loop all bus I/O memory */
            for (Range = &BusHandler->BusAddresses->IO;
                 Range;
                 Range = Range->Next)
            {
                /* Check if it's in a valid range */
                if ((BusAddress.QuadPart >= Range->Base) &&
                    (BusAddress.QuadPart <= Range->Limit))
                {
                    /* Get out */
                    break;
                }
            }
 
            /* Done */
            break;
    }
 
    /* Check if we found a range */
    if (Range)
    {
        /* Do the translation and return the kind of address space this is */
        TranslatedAddress->QuadPart = BusAddress.QuadPart + Range->SystemBase;
        if ((TranslatedAddress->QuadPart != BusAddress.QuadPart) ||
            (*AddressSpace != Range->SystemAddressSpace))
        {
            /* Different than what the old HAL would do */
            DPRINT1("Translation of %I64x is %I64x %s\n",
                    BusAddress.QuadPart, TranslatedAddress->QuadPart,
                    Range->SystemAddressSpace ? "In I/O Space" : "In RAM");
        }
        *AddressSpace = Range->SystemAddressSpace;
        return TRUE;
    }
 
    /* Nothing found */
    DPRINT1("Translation of %I64x failed!\n", BusAddress.QuadPart);
    return FALSE;
}

Referenced by HalpRegisterInternalBusHandlers(), and HalpTranslateIsaBusAddress().