146 lines
5.2 KiB
C
146 lines
5.2 KiB
C
/*-
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* Copyright (c) 1997 Helmut Wirth <hfwirth@ping.at>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice immediately at the beginning of the file, witout modification,
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* this list of conditions, and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id$
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*/
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#ifndef XMS_H
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#define XMS_H
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#define XMS_VERSION 0x0300 /* version 3.00 */
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#define XMS_REVISION 0x0100 /* driver revision 1.0 */
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#define NUM_HANDLES 64 /* number of available handles */
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#define FIRST_HANDLE 1 /* number of firts valid handle */
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#define PARAGRAPH 16 /* bytes in a paragraph */
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#define MAX_BLOCK_LOCKS 256 /* number of locks on a block */
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#define DEFAULT_EMM_SIZE 512 * 1024 /* default EMM size */
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/* Register AH codes for XMS functions */
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#define XMS_GET_VERSION 0x00
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#define XMS_ALLOCATE_HIGH_MEMORY 0x01
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#define XMS_FREE_HIGH_MEMORY 0x02
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#define XMS_GLOBAL_ENABLE_A20 0x03
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#define XMS_GLOBAL_DISABLE_A20 0x04
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#define XMS_LOCAL_ENABLE_A20 0x05
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#define XMS_LOCAL_DISABLE_A20 0x06
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#define XMS_QUERY_A20 0x07
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#define XMS_QUERY_FREE_EXTENDED_MEMORY 0x08
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#define XMS_ALLOCATE_EXTENDED_MEMORY 0x09
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#define XMS_FREE_EXTENDED_MEMORY 0x0a
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#define XMS_MOVE_EXTENDED_MEMORY_BLOCK 0x0b
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#define XMS_LOCK_EXTENDED_MEMORY_BLOCK 0x0c
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#define XMS_UNLOCK_EXTENDED_MEMORY_BLOCK 0x0d
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#define XMS_GET_EMB_HANDLE_INFORMATION 0x0e
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#define XMS_RESIZE_EXTENDED_MEMORY_BLOCK 0x0f
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#define XMS_ALLOCATE_UMB 0x10
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#define XMS_DEALLOCATE_UMB 0x11
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#define XMS_REALLOCATE_UMB 0x12
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/* New functions for values bigger than 65MB, not implented yet */
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#define XMS_QUERY_FREE_EXTENDED_MEMORY_LARGE 0x88
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#define XMS_ALLOCATE_EXTENDED_MEMORY_LARGE 0x89
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#define XMS_FREE_EXTENDED_MEMORY_LARGE 0x8a
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/* XMS error return codes */
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#define XMS_SUCCESS 0x0
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#define XMS_NOT_IMPLEMENTED 0x80
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#define XMS_VDISK 0x81 /* If vdisk.sys is present */
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#define XMS_A20_ERROR 0x82
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#define XMS_GENERAL_ERROR 0x8e
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#define XMS_HMA_NOT_MANAGED 0x90
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#define XMS_HMA_ALREADY_USED 0x91
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#define XMS_HMA_NOT_ALLOCATED 0x93
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#define XMS_A20_STILL_ENABLED 0x94
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#define XMS_FULL 0xa0
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#define XMS_OUT_OF_HANDLES 0xa1
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#define XMS_INVALID_HANDLE 0xa2
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#define XMS_INVALID_SOURCE_HANDLE 0xa3
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#define XMS_INVALID_SOURCE_OFFSET 0xa4
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#define XMS_INVALID_DESTINATION_HANDLE 0xa5
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#define XMS_INVALID_DESTINATION_OFFSET 0xa6
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#define XMS_INVALID_LENGTH 0xa7
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#define XMS_BLOCK_NOT_LOCKED 0xaa
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#define XMS_BLOCK_IS_LOCKED 0xab
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#define XMS_BLOCK_LOCKCOUNT_OVERFLOW 0xac
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#define XMS_REQUESTED_UMB_TOO_BIG 0xb0
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#define XMS_NO_UMBS_AVAILABLE 0xb1
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#define XMS_INVALID_UMB_SEGMENT 0xb2
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/*
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* EMM structure for data exchange with DOS caller, hence the
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* packed format
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*/
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struct EMM {
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u_long nbytes;
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u_short src_handle __attribute__ ((packed));
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u_long src_offset __attribute__ ((packed));
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u_short dst_handle __attribute__ ((packed));
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u_long dst_offset __attribute__ ((packed));
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} ;
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/*
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* XMS info structure, only used to pass information to and from
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* DOS
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*/
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struct XMSinfo {
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u_char handle; /* the handle */
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u_char num_locks __attribute__ ((packed)); /* number of locks */
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u_long size __attribute__ ((packed)); /* size of memory */
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u_long phys_addr __attribute__ ((packed)); /* "physical" address */
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};
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/*
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* Handle management inside the emulator for extendend memory pages,
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* invisible to DOS
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*/
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typedef struct {
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u_long addr; /* address inside emulator, from malloc() */
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u_long size; /* size in bytes */
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u_char num_locks; /* lock count for this handle */
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} XMS_handle;
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/*
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* Managment of UMB memory paragraphs (16 bytes). UMB blocks are
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* directly accessible by VM86 applications and lie between 0xd0000 and
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* 0xefff0 in VM86 memory space.
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*/
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struct _UMB_block {
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u_long addr; /* Start address of block */
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u_long size; /* Size in bytes */
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struct _UMB_block *next;
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};
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typedef struct _UMB_block UMB_block;
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#endif /* XMS_H */
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