1 files changed, 133 insertions, 0 deletions
diff --git a/private/ntos/nthals/halsni4x/mips/jxmapio.c b/private/ntos/nthals/halsni4x/mips/jxmapio.c
new file mode 100644
index 000000000..482a287f3
--- /dev/null
+++ b/private/ntos/nthals/halsni4x/mips/jxmapio.c
@@ -0,0 +1,133 @@
+//#pragma comment(exestr, "$Header: /usr4/winnt/SOURCES/ddk35/src/hal/halsni/mips/RCS/jxmapio.c,v 1.1 1994/10/13 15:47:06 holli Exp $")
+
+/*++
+
+Copyright (c) 1993 - 1994 Siemens Nixdorf Informationssysteme AG
+Copyright (c) 1991 - 1994 Microsoft Corporation
+
+Module Name:
+
+    jxmapio.c
+
+Abstract:
+
+    This module implements the mapping of HAL I/O space for a SNI
+    or R4x00 system.
+    For use of EISA I/O Space during phase 0 we go via KSEG1_BASE
+
+Environment:
+
+    Kernel mode
+
+
+--*/
+
+#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) (EISA_CONTROL_PHYSICAL_BASE    | KSEG1_BASE);
+PVOID HalpOnboardControlBase=(PVOID) (RM200_ONBOARD_CONTROL_PHYSICAL_BASE | KSEG1_BASE);
+PVOID HalpEisaMemoryBase    =(PVOID) (EISA_MEMORY_PHYSICAL_BASE    | KSEG1_BASE);
+
+BOOLEAN
+HalpMapIoSpace (
+    VOID
+    )
+
+/*++
+
+Routine Description:
+
+    This routine maps the HAL I/O space for a MIPS R4x00 SNI
+    system (Phase 1, so the mapping goes via MmMapIoSpace()).
+
+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.
+    // (64KB I/O Space)
+    //
+
+    physicalAddress.HighPart = 0;
+    physicalAddress.LowPart  = EISA_CONTROL_PHYSICAL_BASE;
+    HalpEisaControlBase = MmMapIoSpace(physicalAddress,
+                                       PAGE_SIZE * 16,
+                                       FALSE);
+
+    //
+    // for the sni deskop model, may need an extra address space
+    // HalpEisaExtensionInstalled can only be TRUE on RM200 (Desktop)
+    //
+
+    if (HalpEisaExtensionInstalled) {
+        physicalAddress.HighPart = 0;
+        physicalAddress.LowPart  = RM200_ONBOARD_CONTROL_PHYSICAL_BASE;
+        HalpOnboardControlBase = MmMapIoSpace(physicalAddress,
+                                           PAGE_SIZE * 16,
+                                           FALSE);
+
+    } else
+
+    //
+    // In the SNI Minitower model, we have only one
+    // address space
+    //
+
+    HalpOnboardControlBase = HalpEisaControlBase;
+
+    //
+    // Map EISA memory space so the x86 bios emulator emulator can
+    // initialze a video adapter in an EISA/Isa slot.
+    // (first 1MB only to have access to Card Bioses)
+    // We do not have to call HalTranslateBusAddress on our SNI machines,
+    // because we always use EISA_MEMORY_PHYSICAL_BASE for Extension Cards
+    // on all machines
+    //
+
+    physicalAddress.HighPart = 0;
+    physicalAddress.LowPart  = EISA_MEMORY_PHYSICAL_BASE;
+    HalpEisaMemoryBase = MmMapIoSpace(physicalAddress,
+                                          PAGE_SIZE * 256,
+                                          FALSE);
+    //
+    // If either mapped address is NULL, then return FALSE as the function
+    // value. Otherwise, return TRUE.
+    //
+
+    if ((HalpEisaControlBase    == NULL) ||
+        (HalpOnboardControlBase == NULL) ||
+        (HalpEisaMemoryBase     == NULL)) {
+            return FALSE;
+    } else {
+            return TRUE;
+    }
+}