1 files changed, 108 insertions, 0 deletions
diff --git a/private/ntos/nthals/halfxs/mips/jxmapio.c b/private/ntos/nthals/halfxs/mips/jxmapio.c
new file mode 100644
index 000000000..d61662620
--- /dev/null
+++ b/private/ntos/nthals/halfxs/mips/jxmapio.c
@@ -0,0 +1,108 @@
+/*++
+
+Copyright (c) 1991  Microsoft Corporation
+
+Module Name:
+
+    jxmapio.c
+
+Abstract:
+
+    This module implements the mapping of HAL I/O space a MIPS R3000
+    or R4000 Jazz system.
+
+Author:
+
+    David N. Cutler (davec) 28-Apr-1991
+
+Environment:
+
+    Kernel mode
+
+Revision History:
+
+--*/
+
+#include "halp.h"
+
+//
+// Put all code for HAL initialization in the INIT section. It will be
+// deallocated by memory management when phase 1 initialization is
+// completed.
+//
+
+#if defined(ALLOC_PRAGMA)
+
+#pragma alloc_text(INIT, HalpMapIoSpace)
+
+#endif
+
+//
+// Define global data used to locate the EISA control space and the realtime
+// clock registers.
+//
+
+PVOID HalpEisaControlBase;
+PVOID HalpEisaMemoryBase;
+PVOID HalpRealTimeClockBase;
+
+BOOLEAN
+HalpMapIoSpace (
+    VOID
+    )
+
+/*++
+
+Routine Description:
+
+    This routine maps the HAL I/O space for a MIPS R3000 or R4000 Jazz
+    system.
+
+Arguments:
+
+    None.
+
+Return Value:
+
+    If the initialization is successfully completed, than a value of TRUE
+    is returned. Otherwise, a value of FALSE is returned.
+
+--*/
+
+{
+
+    PHYSICAL_ADDRESS physicalAddress;
+
+    //
+    // Map EISA control space. Map all 16 slots.  This is done so the NMI
+    // code can probe the cards.
+    //
+
+    physicalAddress.HighPart = 0;
+    physicalAddress.LowPart = EISA_CONTROL_PHYSICAL_BASE;
+    HalpEisaControlBase = MmMapIoSpace(physicalAddress,
+                                       PAGE_SIZE * 16,
+                                       FALSE);
+
+    //
+    // Map realtime clock registers.
+    //
+
+    physicalAddress.LowPart = RTCLOCK_PHYSICAL_BASE;
+    HalpRealTimeClockBase = MmMapIoSpace(physicalAddress,
+                                         PAGE_SIZE,
+                                         FALSE);
+
+    //
+    // If either mapped address is NULL, then return FALSE as the function
+    // value. Otherwise, return TRUE.
+    //
+
+    if ((HalpEisaControlBase == NULL) ||
+        (HalpRealTimeClockBase == NULL)) {
+        return FALSE;
+
+    } else {
+        return TRUE;
+    }
+}