758 lines
21 KiB
C++
758 lines
21 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id: harddrv.h,v 1.22 2003-09-22 23:32:24 cbothamy Exp $
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2002 MandrakeSoft S.A.
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//
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// MandrakeSoft S.A.
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// 43, rue d'Aboukir
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// 75002 Paris - France
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// http://www.linux-mandrake.com/
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// http://www.mandrakesoft.com/
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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// SPARSE IMAGES HEADER
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#define SPARSE_HEADER_MAGIC (0x02468ace)
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#define SPARSE_HEADER_VERSION 1
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#define SPARSE_HEADER_SIZE (256) // Plenty of room for later
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#define SPARSE_PAGE_NOT_ALLOCATED (0xffffffff)
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typedef struct
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{
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uint32 magic;
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uint32 version;
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uint32 pagesize;
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uint32 numpages;
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uint32 padding[60];
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} sparse_header_t;
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#define STANDARD_HEADER_MAGIC "Bochs Virtual HD Image"
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#define STANDARD_HEADER_VERSION (0x00010000)
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#define STANDARD_HEADER_SIZE (512)
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// WARNING : headers are kept in x86 (little) endianness
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typedef struct
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{
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Bit8u magic[32];
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Bit8u type[16];
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Bit8u subtype[16];
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Bit32u version;
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Bit32u header;
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} standard_header_t;
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#define REDOLOG_TYPE "Redolog"
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#define REDOLOG_SUBTYPE_UNDOABLE "Undoable"
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#define REDOLOG_SUBTYPE_VOLATILE "Volatile"
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#define REDOLOG_SUBTYPE_GROWING "Growing"
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// #define REDOLOG_SUBTYPE_Z_UNDOABLE "z-Undoable"
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// #define REDOLOG_SUBTYPE_Z_VOLATILE "z-Volatile"
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#define REDOLOG_PAGE_NOT_ALLOCATED (0xffffffff)
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#define UNDOABLE_REDOLOG_EXTENSION ".redolog"
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#define UNDOABLE_REDOLOG_EXTENSION_LENGTH (strlen(UNDOABLE_REDOLOG_EXTENSION))
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#define VOLATILE_REDOLOG_EXTENSION ".XXXXXX"
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#define VOLATILE_REDOLOG_EXTENSION_LENGTH (strlen(VOLATILE_REDOLOG_EXTENSION))
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typedef struct
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{
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// the fields in the header are kept in little endian
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Bit32u catalog; // #entries in the catalog
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Bit32u bitmap; // bitmap size in bytes
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Bit32u extent; // extent size in bytes
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Bit64u disk; // disk size in bytes
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} redolog_specific_header_t;
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typedef struct
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{
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standard_header_t standard;
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redolog_specific_header_t specific;
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Bit8u padding[STANDARD_HEADER_SIZE - (sizeof (standard_header_t) + sizeof (redolog_specific_header_t))];
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} redolog_header_t;
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// htod : convert host to disk (little) endianness
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// dtoh : convert disk (little) to host endianness
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#if defined (BX_LITTLE_ENDIAN)
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#define htod32(val) (val)
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#define dtoh32(val) (val)
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#define htod64(val) (val)
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#define dtoh64(val) (val)
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#else
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#define htod32(val) ( (((val)&0xff000000)>>24) | (((val)&0xff0000)>>8) | (((val)&0xff00)<<8) | (((val)&0xff)<<24) )
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#define dtoh32(val) htod32(val)
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#define htod64(val) ( (((val)&0xff00000000000000LL)>>56) | (((val)&0xff000000000000LL)>>40) | (((val)&0xff0000000000LL)>>24) | (((val)&0xff00000000LL)>>8) | (((val)&0xff000000LL)<<8) | (((val)&0xff0000LL)<<24) | (((val)&0xff00LL)<<40) | (((val)&0xffLL)<<56) )
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#define dtoh64(val) htod64(val)
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#endif
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#ifndef INCLUDE_ONLY_HD_HEADERS
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typedef enum _sense {
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SENSE_NONE = 0, SENSE_NOT_READY = 2, SENSE_ILLEGAL_REQUEST = 5,
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SENSE_UNIT_ATTENTION = 6
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} sense_t;
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typedef enum _asc {
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ASC_INV_FIELD_IN_CMD_PACKET = 0x24,
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ASC_MEDIUM_NOT_PRESENT = 0x3a,
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ASC_SAVING_PARAMETERS_NOT_SUPPORTED = 0x39,
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ASC_LOGICAL_BLOCK_OOR = 0x21
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} asc_t;
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class LOWLEVEL_CDROM;
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class device_image_t
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{
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public:
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// Open a image. Returns non-negative if successful.
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virtual int open (const char* pathname) = 0;
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// Close the image.
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virtual void close () = 0;
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// Position ourselves. Return the resulting offset from the
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// beginning of the file.
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virtual off_t lseek (off_t offset, int whence) = 0;
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// Read count bytes to the buffer buf. Return the number of
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// bytes read (count).
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virtual ssize_t read (void* buf, size_t count) = 0;
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// Write count bytes from buf. Return the number of bytes
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// written (count).
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virtual ssize_t write (const void* buf, size_t count) = 0;
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unsigned cylinders;
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unsigned heads;
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unsigned sectors;
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};
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// FLAT MODE
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class default_image_t : public device_image_t
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{
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public:
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// Open a image. Returns non-negative if successful.
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int open (const char* pathname);
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// Open an image with specific flags. Returns non-negative if successful.
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int open (const char* pathname, int flags);
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// Close the image.
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void close ();
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// Position ourselves. Return the resulting offset from the
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// beginning of the file.
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off_t lseek (off_t offset, int whence);
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// Read count bytes to the buffer buf. Return the number of
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// bytes read (count).
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ssize_t read (void* buf, size_t count);
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// Write count bytes from buf. Return the number of bytes
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// written (count).
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ssize_t write (const void* buf, size_t count);
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private:
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int fd;
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};
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// CONCAT MODE
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class concat_image_t : public device_image_t
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{
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public:
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// Default constructor
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concat_image_t();
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// Open a image. Returns non-negative if successful.
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int open (const char* pathname);
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// Close the image.
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void close ();
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// Position ourselves. Return the resulting offset from the
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// beginning of the file.
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off_t lseek (off_t offset, int whence);
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// Read count bytes to the buffer buf. Return the number of
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// bytes read (count).
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ssize_t read (void* buf, size_t count);
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// Write count bytes from buf. Return the number of bytes
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// written (count).
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ssize_t write (const void* buf, size_t count);
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private:
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#define BX_CONCAT_MAX_IMAGES 8
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int fd_table[BX_CONCAT_MAX_IMAGES];
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off_t start_offset_table[BX_CONCAT_MAX_IMAGES];
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off_t length_table[BX_CONCAT_MAX_IMAGES];
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void increment_string (char *str);
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int maxfd; // number of entries in tables that are valid
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// notice if anyone does sequential read or write without seek in between.
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// This can be supported pretty easily, but needs additional checks.
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// 0=something other than seek was last operation
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// 1=seek was last operation
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int seek_was_last_op;
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// the following variables tell which partial image file to use for
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// the next read and write.
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int index; // index into table
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int fd; // fd to use for reads and writes
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off_t thismin, thismax; // byte offset boundary of this image
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};
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// SPARSE MODE
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class sparse_image_t : public device_image_t
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{
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// Format of a sparse file:
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// 256 byte header, containing details such as page size and number of pages
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// Page indirection table, mapping virtual pages to physical pages within file
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// Physical pages till end of file
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public:
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// Default constructor
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sparse_image_t();
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// Open a image. Returns non-negative if successful.
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int open (const char* pathname);
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// Close the image.
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void close ();
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// Position ourselves. Return the resulting offset from the
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// beginning of the file.
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off_t lseek (off_t offset, int whence);
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// Read count bytes to the buffer buf. Return the number of
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// bytes read (count).
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ssize_t read (void* buf, size_t count);
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// Write count bytes from buf. Return the number of bytes
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// written (count).
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ssize_t write (const void* buf, size_t count);
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private:
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int fd;
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#ifdef _POSIX_MAPPED_FILES
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void * mmap_header;
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size_t mmap_length;
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size_t system_pagesize_mask;
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#endif
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uint32 * pagetable;
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// Header is written to disk in little-endian (x86) format
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// Thus needs to be converted on big-endian systems before read
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// The pagetable is also kept little endian
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sparse_header_t header;
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uint32 pagesize;
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int pagesize_shift;
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uint32 pagesize_mask;
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off_t data_start;
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off_t underlying_filesize;
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char * pathname;
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off_t position;
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uint32 position_virtual_page;
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uint32 position_physical_page;
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uint32 position_page_offset;
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off_t underlying_current_filepos;
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off_t total_size;
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void panic(const char * message);
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off_t sparse_image_t::get_physical_offset();
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void sparse_image_t::set_virtual_page(uint32 new_virtual_page);
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void read_header();
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ssize_t read_page_fragment(uint32 read_virtual_page, uint32 read_page_offset, size_t read_size, void * buf);
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sparse_image_t * parent_image;
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};
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#if EXTERNAL_DISK_SIMULATOR
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#include "external-disk-simulator.h"
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#endif
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#if DLL_HD_SUPPORT
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class dll_image_t : public device_image_t
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{
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public:
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// Open a image. Returns non-negative if successful.
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int open (const char* pathname);
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// Close the image.
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void close ();
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// Position ourselves. Return the resulting offset from the
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// beginning of the file.
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off_t lseek (off_t offset, int whence);
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// Read count bytes to the buffer buf. Return the number of
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// bytes read (count).
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ssize_t read (void* buf, size_t count);
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// Write count bytes from buf. Return the number of bytes
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// written (count).
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ssize_t write (const void* buf, size_t count);
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private:
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int vunit,vblk;
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};
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#endif
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// REDOLOG class
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class redolog_t
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{
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public:
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redolog_t();
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int make_header (const char* type, Bit64u size);
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int create (const char* filename, const char* type, Bit64u size);
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int create (int filedes, const char* type, Bit64u size);
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int open (const char* filename, const char* type, Bit64u size);
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void close ();
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off_t lseek (off_t offset, int whence);
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ssize_t read (void* buf, size_t count);
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ssize_t write (const void* buf, size_t count);
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private:
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void print_header();
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int fd;
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redolog_header_t header; // Header is kept in x86 (little) endianness
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Bit32u *catalog;
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Bit8u *bitmap;
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Bit32u extent_index;
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Bit32u extent_offset;
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Bit32u extent_next;
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Bit32u bitmap_blocs;
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Bit32u extent_blocs;
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};
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// GROWING MODE
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class growing_image_t : public device_image_t
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{
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public:
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// Contructor
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growing_image_t(Bit64u size);
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// Open a image. Returns non-negative if successful.
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int open (const char* pathname);
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// Close the image.
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void close ();
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// Position ourselves. Return the resulting offset from the
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// beginning of the file.
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off_t lseek (off_t offset, int whence);
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// Read count bytes to the buffer buf. Return the number of
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// bytes read (count).
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ssize_t read (void* buf, size_t count);
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// Write count bytes from buf. Return the number of bytes
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// written (count).
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ssize_t write (const void* buf, size_t count);
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private:
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redolog_t *redolog;
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Bit64u size;
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};
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// UNDOABLE MODE
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class undoable_image_t : public device_image_t
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{
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public:
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// Contructor
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undoable_image_t(Bit64u size, const char* redolog_name);
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// Open a image. Returns non-negative if successful.
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int open (const char* pathname);
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// Close the image.
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void close ();
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// Position ourselves. Return the resulting offset from the
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// beginning of the file.
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off_t lseek (off_t offset, int whence);
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// Read count bytes to the buffer buf. Return the number of
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// bytes read (count).
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ssize_t read (void* buf, size_t count);
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// Write count bytes from buf. Return the number of bytes
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// written (count).
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ssize_t write (const void* buf, size_t count);
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private:
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redolog_t *redolog; // Redolog instance
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default_image_t *ro_disk; // Read-only flat disk instance
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Bit64u size;
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char *redolog_name; // Redolog name
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};
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// VOLATILE MODE
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class volatile_image_t : public device_image_t
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{
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public:
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// Contructor
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volatile_image_t(Bit64u size, const char* redolog_name);
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// Open a image. Returns non-negative if successful.
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int open (const char* pathname);
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// Close the image.
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void close ();
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// Position ourselves. Return the resulting offset from the
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// beginning of the file.
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off_t lseek (off_t offset, int whence);
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// Read count bytes to the buffer buf. Return the number of
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// bytes read (count).
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ssize_t read (void* buf, size_t count);
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// Write count bytes from buf. Return the number of bytes
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// written (count).
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ssize_t write (const void* buf, size_t count);
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private:
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redolog_t *redolog; // Redolog instance
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default_image_t *ro_disk; // Read-only flat disk instance
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Bit64u size;
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char *redolog_name; // Redolog name
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char *redolog_temp; // Redolog temporary file name
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};
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#if BX_COMPRESSED_HD_SUPPORT
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#include <zlib.h>
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// Default compressed READ-ONLY image class
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class z_ro_image_t : public device_image_t
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{
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public:
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// Contructor
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z_ro_image_t();
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// Open a image. Returns non-negative if successful.
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int open (const char* pathname);
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// Close the image.
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void close ();
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// Position ourselves. Return the resulting offset from the
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// beginning of the file.
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off_t lseek (off_t offset, int whence);
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// Read count bytes to the buffer buf. Return the number of
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// bytes read (count).
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ssize_t read (void* buf, size_t count);
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// Write count bytes from buf. Return the number of bytes
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// written (count).
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ssize_t write (const void* buf, size_t count);
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private:
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off_t offset;
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int fd;
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gzFile gzfile;
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};
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// Z-UNDOABLE MODE
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class z_undoable_image_t : public device_image_t
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{
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public:
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// Contructor
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z_undoable_image_t(Bit64u size, const char* redolog_name);
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// Open a image. Returns non-negative if successful.
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int open (const char* pathname);
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// Close the image.
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void close ();
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// Position ourselves. Return the resulting offset from the
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// beginning of the file.
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off_t lseek (off_t offset, int whence);
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// Read count bytes to the buffer buf. Return the number of
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// bytes read (count).
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ssize_t read (void* buf, size_t count);
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// Write count bytes from buf. Return the number of bytes
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// written (count).
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ssize_t write (const void* buf, size_t count);
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private:
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redolog_t *redolog; // Redolog instance
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z_ro_image_t *ro_disk; // Read-only compressed flat disk instance
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Bit64u size;
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char *redolog_name; // Redolog name
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};
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// Z-VOLATILE MODE
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class z_volatile_image_t : public device_image_t
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{
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public:
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// Contructor
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z_volatile_image_t(Bit64u size, const char* redolog_name);
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// Open a image. Returns non-negative if successful.
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int open (const char* pathname);
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// Close the image.
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void close ();
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// Position ourselves. Return the resulting offset from the
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// beginning of the file.
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off_t lseek (off_t offset, int whence);
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// Read count bytes to the buffer buf. Return the number of
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// bytes read (count).
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ssize_t read (void* buf, size_t count);
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// Write count bytes from buf. Return the number of bytes
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// written (count).
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ssize_t write (const void* buf, size_t count);
|
|
|
|
private:
|
|
redolog_t *redolog; // Redolog instance
|
|
z_ro_image_t *ro_disk; // Read-only compressed flat disk instance
|
|
Bit64u size;
|
|
char *redolog_name; // Redolog name
|
|
char *redolog_temp; // Redolog temporary file name
|
|
};
|
|
|
|
#endif
|
|
|
|
|
|
typedef struct {
|
|
struct {
|
|
bx_bool busy;
|
|
bx_bool drive_ready;
|
|
bx_bool write_fault;
|
|
bx_bool seek_complete;
|
|
bx_bool drq;
|
|
bx_bool corrected_data;
|
|
bx_bool index_pulse;
|
|
unsigned index_pulse_count;
|
|
bx_bool err;
|
|
} status;
|
|
Bit8u error_register;
|
|
Bit8u head_no;
|
|
union {
|
|
Bit8u sector_count;
|
|
struct {
|
|
#ifdef BX_LITTLE_ENDIAN
|
|
unsigned c_d : 1;
|
|
unsigned i_o : 1;
|
|
unsigned rel : 1;
|
|
unsigned tag : 5;
|
|
#else /* BX_BIG_ENDIAN */
|
|
unsigned tag : 5;
|
|
unsigned rel : 1;
|
|
unsigned i_o : 1;
|
|
unsigned c_d : 1;
|
|
#endif
|
|
} interrupt_reason;
|
|
};
|
|
Bit8u sector_no;
|
|
union {
|
|
Bit16u cylinder_no;
|
|
Bit16u byte_count;
|
|
};
|
|
Bit8u buffer[2048];
|
|
Bit32u buffer_index;
|
|
Bit32u drq_index;
|
|
Bit8u current_command;
|
|
Bit8u sectors_per_block;
|
|
Bit8u lba_mode;
|
|
struct {
|
|
bx_bool reset; // 0=normal, 1=reset controller
|
|
bx_bool disable_irq; // 0=allow irq, 1=disable irq
|
|
} control;
|
|
Bit8u reset_in_progress;
|
|
Bit8u features;
|
|
} controller_t;
|
|
|
|
struct sense_info_t {
|
|
sense_t sense_key;
|
|
struct {
|
|
Bit8u arr[4];
|
|
} information;
|
|
struct {
|
|
Bit8u arr[4];
|
|
} specific_inf;
|
|
struct {
|
|
Bit8u arr[3];
|
|
} key_spec;
|
|
Bit8u fruc;
|
|
Bit8u asc;
|
|
Bit8u ascq;
|
|
};
|
|
|
|
struct error_recovery_t {
|
|
unsigned char data[8];
|
|
|
|
error_recovery_t ();
|
|
};
|
|
|
|
uint16 read_16bit(const uint8* buf) BX_CPP_AttrRegparmN(1);
|
|
uint32 read_32bit(const uint8* buf) BX_CPP_AttrRegparmN(1);
|
|
|
|
|
|
#ifdef LOWLEVEL_CDROM
|
|
# include "cdrom.h"
|
|
#endif
|
|
|
|
|
|
struct cdrom_t
|
|
{
|
|
bx_bool ready;
|
|
bx_bool locked;
|
|
#ifdef LOWLEVEL_CDROM
|
|
LOWLEVEL_CDROM* cd;
|
|
#endif
|
|
uint32 capacity;
|
|
int next_lba;
|
|
int remaining_blocks;
|
|
struct currentStruct {
|
|
error_recovery_t error_recovery;
|
|
} current;
|
|
};
|
|
|
|
struct atapi_t
|
|
{
|
|
uint8 command;
|
|
int drq_bytes;
|
|
int total_bytes_remaining;
|
|
};
|
|
|
|
#if BX_USE_HD_SMF
|
|
# define BX_HD_SMF static
|
|
# define BX_HD_THIS theHardDrive->
|
|
#else
|
|
# define BX_HD_SMF
|
|
# define BX_HD_THIS this->
|
|
#endif
|
|
|
|
typedef enum {
|
|
IDE_NONE, IDE_DISK, IDE_CDROM
|
|
} device_type_t;
|
|
|
|
class bx_hard_drive_c : public bx_hard_drive_stub_c {
|
|
public:
|
|
|
|
bx_hard_drive_c(void);
|
|
virtual ~bx_hard_drive_c(void);
|
|
virtual void close_harddrive(void);
|
|
virtual void init();
|
|
virtual void reset(unsigned type);
|
|
virtual Bit32u get_device_handle(Bit8u channel, Bit8u device);
|
|
virtual Bit32u get_first_cd_handle(void);
|
|
virtual unsigned get_cd_media_status(Bit32u handle);
|
|
virtual unsigned set_cd_media_status(Bit32u handle, unsigned status);
|
|
|
|
virtual Bit32u virt_read_handler(Bit32u address, unsigned io_len) {
|
|
return read_handler (this, address, io_len);
|
|
}
|
|
virtual void virt_write_handler(Bit32u address,
|
|
Bit32u value, unsigned io_len)
|
|
{
|
|
write_handler(this, address, value, io_len);
|
|
}
|
|
#if !BX_USE_HD_SMF
|
|
Bit32u read(Bit32u address, unsigned io_len);
|
|
void write(Bit32u address, Bit32u value, unsigned io_len);
|
|
#endif
|
|
|
|
static Bit32u read_handler(void *this_ptr, Bit32u address, unsigned io_len);
|
|
static void write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len);
|
|
|
|
private:
|
|
|
|
BX_HD_SMF bx_bool calculate_logical_address(Bit8u channel, off_t *sector) BX_CPP_AttrRegparmN(2);
|
|
BX_HD_SMF void increment_address(Bit8u channel) BX_CPP_AttrRegparmN(1);
|
|
BX_HD_SMF void identify_drive(Bit8u channel);
|
|
BX_HD_SMF void identify_ATAPI_drive(Bit8u channel);
|
|
BX_HD_SMF void command_aborted(Bit8u channel, unsigned command);
|
|
|
|
BX_HD_SMF void init_send_atapi_command(Bit8u channel, Bit8u command, int req_length, int alloc_length, bool lazy = false) BX_CPP_AttrRegparmN(3);
|
|
BX_HD_SMF void ready_to_send_atapi(Bit8u channel) BX_CPP_AttrRegparmN(1);
|
|
BX_HD_SMF void raise_interrupt(Bit8u channel) BX_CPP_AttrRegparmN(1);
|
|
BX_HD_SMF void atapi_cmd_error(Bit8u channel, sense_t sense_key, asc_t asc);
|
|
BX_HD_SMF void init_mode_sense_single(Bit8u channel, const void* src, int size);
|
|
BX_HD_SMF void atapi_cmd_nop(Bit8u channel) BX_CPP_AttrRegparmN(1);
|
|
|
|
// FIXME:
|
|
// For each ATA channel we should have one controller struct
|
|
// and an array of two drive structs
|
|
struct channel_t {
|
|
struct drive_t {
|
|
device_image_t* hard_drive;
|
|
device_type_t device_type;
|
|
// 512 byte buffer for ID drive command
|
|
// These words are stored in native word endian format, as
|
|
// they are fetched and returned via a return(), so
|
|
// there's no need to keep them in x86 endian format.
|
|
Bit16u id_drive[256];
|
|
|
|
controller_t controller;
|
|
cdrom_t cdrom;
|
|
sense_info_t sense;
|
|
atapi_t atapi;
|
|
|
|
Bit8u model_no[41];
|
|
} drives[2];
|
|
unsigned drive_select;
|
|
|
|
Bit16u ioaddr1;
|
|
Bit16u ioaddr2;
|
|
Bit8u irq;
|
|
|
|
} channels[BX_MAX_ATA_CHANNEL];
|
|
|
|
#if BX_PDC20230C_VLBIDE_SUPPORT
|
|
// pdc20630c is only available for 1st ata channel
|
|
struct pdc20630c_t {
|
|
bx_bool prog_mode;
|
|
Bit8u prog_count;
|
|
Bit32u p1f3_value;
|
|
Bit32u p1f4_value;
|
|
} pdc20230c;
|
|
#endif
|
|
|
|
};
|
|
#endif // INCLUDE_ONLY_SPARSE_HEADER
|
|
|