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hardfile.cpp
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hardfile.cpp
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/*
* UAE - The Un*x Amiga Emulator
*
* Hardfile emulation
*
* Copyright 1995 Bernd Schmidt
* 2002 Toni Wilen (scsi emulation, 64-bit support)
*/
#include "sysconfig.h"
#include "sysdeps.h"
#include "threaddep/thread.h"
#include "options.h"
#include "memory.h"
#include "custom.h"
#include "newcpu.h"
#include "disk.h"
#include "autoconf.h"
#include "traps.h"
#include "filesys.h"
#include "execlib.h"
#include "native2amiga.h"
#include "gui.h"
#include "uae.h"
#include "scsi.h"
#include "gayle.h"
#include "execio.h"
#include "zfile.h"
#include "ide.h"
#include "debug.h"
#include "ini.h"
#include "rommgr.h"
#ifdef WITH_CHD
#include "archivers/chd/chdtypes.h"
#include "archivers/chd/chd.h"
#include "archivers/chd/harddisk.h"
#endif
#define HDF_SUPPORT_NSD 1
#define HDF_SUPPORT_TD64 1
#define HDF_SUPPORT_DS 1
#define HDF_SUPPORT_DS_PARTITION 0
#undef DEBUGME
#define hf_log(fmt, ...)
#define hf_log2(fmt, ...)
#define scsi_log(fmt, ...)
#define hf_log3(fmt, ...)
//#define DEBUGME
#ifdef DEBUGME
#undef hf_log
#define hf_log write_log
#undef hf_log2
#define hf_log2 write_log
#undef hf_log3
#define hf_log3 write_log
#undef scsi_log
#define scsi_log write_log
#endif
extern int log_scsiemu;
int enable_ds_partition_hdf;
#define MAX_ASYNC_REQUESTS 50
#define ASYNC_REQUEST_NONE 0
#define ASYNC_REQUEST_TEMP 1
#define ASYNC_REQUEST_CHANGEINT 10
struct hardfileprivdata {
uaecptr d_request[MAX_ASYNC_REQUESTS];
uae_u8 *d_request_iobuf[MAX_ASYNC_REQUESTS];
int d_request_type[MAX_ASYNC_REQUESTS];
uae_u32 d_request_data[MAX_ASYNC_REQUESTS];
smp_comm_pipe requests;
int thread_running;
uae_sem_t sync_sem;
uaecptr base;
int changenum;
uaecptr changeint;
struct scsi_data *sd;
bool directorydrive;
};
#define HFD_CHD_OTHER 5
#define HFD_CHD_HD 4
#define HFD_VHD_DYNAMIC 3
#define HFD_VHD_FIXED 2
STATIC_INLINE uae_u32 gl (uae_u8 *p)
{
return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | (p[3] << 0);
}
static uae_sem_t change_sem;
static struct hardfileprivdata hardfpd[MAX_FILESYSTEM_UNITS];
static uae_u32 nscmd_cmd;
static void wl (uae_u8 *p, uae_u32 v)
{
p[0] = v >> 24;
p[1] = v >> 16;
p[2] = v >> 8;
p[3] = v;
}
static void ww (uae_u8 *p, uae_u16 v)
{
p[0] = v >> 8;
p[1] = v;
}
static int rl (uae_u8 *p)
{
return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | (p[3]);
}
static void getchs2 (struct hardfiledata *hfd, int *cyl, int *cylsec, int *head, int *tracksec)
{
unsigned int total = (unsigned int)(hfd->virtsize / 1024);
int heads;
int sectors = 63;
if (hfd->ci.physical_geometry) {
*cyl = hfd->ci.pcyls;
*tracksec = hfd->ci.psecs;
*head = hfd->ci.pheads;
*cylsec = (*head) * (*tracksec);
return;
}
/* do we have RDB values? */
if (hfd->rdbcylinders) {
*cyl = hfd->rdbcylinders;
*tracksec = hfd->rdbsectors;
*head = hfd->rdbheads;
*cylsec = hfd->rdbsectors * hfd->rdbheads;
return;
}
/* what about HDF settings? */
if (hfd->ci.surfaces && hfd->ci.sectors) {
*head = hfd->ci.surfaces;
*tracksec = hfd->ci.sectors;
*cylsec = (*head) * (*tracksec);
*cyl = (unsigned int)(hfd->virtsize / hfd->ci.blocksize) / ((*tracksec) * (*head));
if (*cyl == 0)
*cyl = (unsigned int)hfd->ci.max_lba / ((*tracksec) * (*head));
return;
}
/* no, lets guess something.. */
if (total <= 504 * 1024)
heads = 16;
else if (total <= 1008 * 1024)
heads = 32;
else if (total <= 2016 * 1024)
heads = 64;
else if (total <= 4032 * 1024)
heads = 128;
else
heads = 255;
*cyl = (unsigned int)(hfd->virtsize / hfd->ci.blocksize) / (sectors * heads);
if (*cyl == 0)
*cyl = (unsigned int)hfd->ci.max_lba / (sectors * heads);
*cylsec = sectors * heads;
*tracksec = sectors;
*head = heads;
}
static void getchsx (struct hardfiledata *hfd, int *cyl, int *cylsec, int *head, int *tracksec)
{
getchs2 (hfd, cyl, cylsec, head, tracksec);
hf_log (_T("CHS: %08X-%08X %d %d %d %d %d\n"),
(uae_u32)(hfd->virtsize >> 32),(uae_u32)hfd->virtsize,
*cyl, *cylsec, *head, *tracksec);
}
static void getchsgeometry2 (uae_u64 size, int *pcyl, int *phead, int *psectorspertrack, int mode)
{
int sptt[4];
int i, spt, head, cyl;
uae_u64 total = (unsigned int)(size / 512);
if (mode == 1) {
// old-style head=1, spt=32 always mode
head = 1;
spt = 32;
cyl = total / (head * spt);
} else {
sptt[0] = 63;
sptt[1] = 127;
sptt[2] = 255;
sptt[3] = -1;
for (i = 0; sptt[i] >= 0; i++) {
int maxhead = sptt[i] < 255 ? 16 : 255;
spt = sptt[i];
for (head = 4; head <= maxhead; head++) {
cyl = total / (head * spt);
if (size <= 512 * 1024 * 1024) {
if (cyl <= 1023)
break;
} else {
if (cyl < 16383)
break;
if (cyl < 32767 && head >= 5)
break;
if (cyl <= 65535)
break;
}
if (maxhead > 16) {
head *= 2;
head--;
}
}
if (head <= 16)
break;
}
}
if (head > 16)
head--;
*pcyl = cyl;
*phead = head;
*psectorspertrack = spt;
}
void getchsgeometry (uae_u64 size, int *pcyl, int *phead, int *psectorspertrack)
{
getchsgeometry2 (size, pcyl, phead, psectorspertrack, 0);
}
void getchsgeometry_hdf (struct hardfiledata *hfd, uae_u64 size, int *pcyl, int *phead, int *psectorspertrack)
{
uae_u8 block[512];
int i;
uae_u64 minsize = 512 * 1024 * 1024;
if (size <= minsize) {
*phead = 1;
*psectorspertrack = 32;
}
memset (block, 0, sizeof block);
if (hfd) {
hdf_read(hfd, block, 0, 512);
if (block[0] == 'D' && block[1] == 'O' && block[2] == 'S') {
int mode;
for (mode = 0; mode < 2; mode++) {
uae_u32 rootblock;
uae_u32 chk = 0;
getchsgeometry2 (size, pcyl, phead, psectorspertrack, mode);
rootblock = (2 + ((*pcyl) * (*phead) * (*psectorspertrack) - 1)) / 2;
memset (block, 0, sizeof block);
hdf_read(hfd, block, (uae_u64)rootblock * 512, 512);
for (i = 0; i < 512; i += 4)
chk += (block[i] << 24) | (block[i + 1] << 16) | (block[i + 2] << 8) | (block[i + 3] << 0);
if (!chk && block[0] == 0 && block[1] == 0 && block[2] == 0 && block[3] == 2 &&
block[4] == 0 && block[5] == 0 && block[6] == 0 && block[7] == 0 &&
block[8] == 0 && block[9] == 0 && block[10] == 0 && block[11] == 0 &&
block[508] == 0 && block[509] == 0 && block[510] == 0 && block[511] == 1) {
return;
}
}
}
}
getchsgeometry2 (size, pcyl, phead, psectorspertrack, size <= minsize ? 1 : 2);
}
// partition hdf default
void gethdfgeometry(uae_u64 size, struct uaedev_config_info *ci)
{
int head = 1;
int sectorspertrack = 32;
if (size >= 1048576000) { // >=1000M
head = 16;
while ((size / 512) / ((uae_u64)head * sectorspertrack) >= 32768 && sectorspertrack < 32768) {
sectorspertrack *= 2;
}
}
ci->surfaces = head;
ci->sectors = sectorspertrack;
ci->reserved = 2;
ci->blocksize = 512;
}
void getchspgeometry (uae_u64 total, int *pcyl, int *phead, int *psectorspertrack, bool idegeometry)
{
uae_u64 blocks = total / 512;
if (idegeometry) {
*phead = 16;
*psectorspertrack = 63;
*pcyl = blocks / ((*psectorspertrack) * (*phead));
if (blocks > 16515072) {
/* >8G, CHS=16383/16/63 */
*pcyl = 16383;
*phead = 16;
*psectorspertrack = 63;
return;
}
return;
}
getchsgeometry (total, pcyl, phead, psectorspertrack);
}
static void getchshd (struct hardfiledata *hfd, int *pcyl, int *phead, int *psectorspertrack)
{
getchspgeometry (hfd->virtsize, pcyl, phead, psectorspertrack, false);
}
static void pl (uae_u8 *p, int off, uae_u32 v)
{
p += off * 4;
p[0] = v >> 24;
p[1] = v >> 16;
p[2] = v >> 8;
p[3] = v >> 0;
}
static void rdb_crc (uae_u8 *p)
{
uae_u32 sum;
int i, blocksize;
sum =0;
blocksize = rl (p + 1 * 4);
for (i = 0; i < blocksize; i++)
sum += rl (p + i * 4);
sum = -sum;
pl (p, 2, sum);
}
static uae_u32 get_filesys_version(uae_u8 *fs, int size)
{
int ver = -1, rev = -1;
for (int i = 0; i < size - 6; i++) {
uae_u8 *p = fs + i;
if (p[0] == 'V' && p[1] == 'E' && p[2] == 'R' && p[3] == ':' && p[4] == ' ') {
uae_u8 *p2;
p += 5;
p2 = p;
while (*p2 && p2 - fs < size)
p2++;
if (p2[0] == 0) {
while (*p && (ver < 0 || rev < 0)) {
if (*p == ' ') {
p++;
ver = atol((char*)p);
if (ver < 0)
ver = 0;
while (*p) {
if (*p == ' ')
break;
if (*p == '.') {
p++;
rev = atol((char*)p);
if (rev < 0)
rev = 0;
}
else {
p++;
}
}
break;
}
else {
p++;
}
}
}
break;
}
}
if (ver < 0)
return 0xffffffff;
if (rev < 0)
rev = 0;
return (ver << 16) | rev;
}
// hardware block size is always 256 or 512
// filesystem block size can be 256, 512 or larger
static void create_virtual_rdb (struct hardfiledata *hfd)
{
uae_u8 *rdb, *part, *denv, *fs;
int fsblocksize = hfd->ci.blocksize;
int hardblocksize = fsblocksize >= 512 ? 512 : 256;
int cyl = hfd->ci.surfaces * hfd->ci.sectors;
int cyls = (262144 + (cyl * fsblocksize) - 1) / (cyl * fsblocksize);
int size = cyl * cyls * fsblocksize;
int idx = 0;
uae_u8 *filesys = NULL;
int filesyslen = 0;
uae_u32 fsver = 0;
write_log(_T("Creating virtual RDB (RDB size=%d, %d blocks). H=%d S=%d HBS=%d FSBS=%d)\n"),
size, size / hardblocksize, hfd->ci.surfaces, hfd->ci.sectors, hardblocksize, fsblocksize);
if (hfd->ci.filesys[0]) {
struct zfile *f = NULL;
TCHAR fspath[MAX_DPATH];
cfgfile_resolve_path_out_load(hfd->ci.filesys, fspath, MAX_DPATH, PATH_HDF);
filesys = zfile_load_file(fspath, &filesyslen);
if (filesys) {
fsver = get_filesys_version(filesys, filesyslen);
if (fsver == 0xffffffff)
fsver = (99 << 16) | 99;
if (filesyslen & 3) {
xfree(filesys);
filesys = NULL;
filesyslen = 0;
}
}
}
int filesysblocks = (filesyslen + hardblocksize - 5 * 4 - 1) / (hardblocksize - 5 * 4);
rdb = xcalloc (uae_u8, size);
hfd->virtual_rdb = rdb;
hfd->virtual_size = size;
pl(rdb, 0, 0x5244534b); // "RDSK"
pl(rdb, 1, 256 / 4);
pl(rdb, 2, 0); // chksum
pl(rdb, 3, 7); // hostid
pl(rdb, 4, hardblocksize); // blockbytes
pl(rdb, 5, 0); // flags
pl(rdb, 6, -1); // badblock
pl(rdb, 7, idx + 1); // part
pl(rdb, 8, filesys ? idx + 2 : -1); // fs
pl(rdb, 9, -1); // driveinit
pl(rdb, 10, -1); // reserved
pl(rdb, 11, -1); // reserved
pl(rdb, 12, -1); // reserved
pl(rdb, 13, -1); // reserved
pl(rdb, 14, -1); // reserved
pl(rdb, 15, -1); // reserved
pl(rdb, 16, hfd->ci.highcyl + cyls - 1);
pl(rdb, 17, hfd->ci.sectors);
pl(rdb, 18, hfd->ci.surfaces * fsblocksize / hardblocksize);
pl(rdb, 19, hfd->ci.interleave);
pl(rdb, 20, 0); // park
pl(rdb, 21, -1); // res
pl(rdb, 22, -1); // res
pl(rdb, 23, -1); // res
pl(rdb, 24, 0); // writeprecomp
pl(rdb, 25, 0); // reducedwrite
pl(rdb, 26, 0); // steprate
pl(rdb, 27, -1); // res
pl(rdb, 28, -1); // res
pl(rdb, 29, -1); // res
pl(rdb, 30, -1); // res
pl(rdb, 31, -1); // res
pl(rdb, 32, 0); // rdbblockslo
pl(rdb, 33, cyl * cyls * fsblocksize / hardblocksize - 1); // rdbblockshi
pl(rdb, 34, cyls); // locyl
pl(rdb, 35, hfd->ci.highcyl + cyls - 1); // hicyl
pl(rdb, 36, cyl * fsblocksize / hardblocksize); // cylblocks
pl(rdb, 37, 0); // autopark
pl(rdb, 38, (1 + 1 + (filesysblocks ? 2 + filesysblocks : 0) - 1)); // highrdskblock
pl(rdb, 39, -1); // res
ua_copy ((char*)rdb + 40 * 4, 8, hfd->vendor_id);
ua_copy ((char*)rdb + 42 * 4, 16, hfd->product_id);
ua_copy ((char*)rdb + 46 * 4, 4, _T("UAE"));
rdb_crc (rdb);
idx++;
part = rdb + hardblocksize * idx;
pl(part, 0, 0x50415254); // "PART"
pl(part, 1, 256 / 4);
pl(part, 2, 0); // chksum
pl(part, 3, 7); // hostid
pl(part, 4, -1); // next
pl(part, 5, hfd->ci.bootpri < -128 ? 2 : hfd->ci.bootpri == -128 ? 0 : 1); // bootable/nomount
pl(part, 6, -1);
pl(part, 7, -1);
pl(part, 8, 0); // devflags
part[9 * 4] = _tcslen (hfd->ci.devname);
ua_copy ((char*)part + 9 * 4 + 1, 30, hfd->ci.devname);
denv = part + 128;
pl(denv, 0, 16);
pl(denv, 1, fsblocksize / 4);
pl(denv, 2, 0); // secorg
pl(denv, 3, hfd->ci.surfaces);
pl(denv, 4, 1);
pl(denv, 5, hfd->ci.sectors);
pl(denv, 6, hfd->ci.reserved);
pl(denv, 7, 0); // prealloc
pl(denv, 8, hfd->ci.interleave); // interleave
pl(denv, 9, cyls); // lowcyl
pl(denv, 10, hfd->ci.highcyl + cyls - 1);
pl(denv, 11, hfd->ci.buffers);
pl(denv, 12, hfd->ci.bufmemtype);
pl(denv, 13, hfd->ci.maxtransfer);
pl(denv, 14, hfd->ci.mask);
pl(denv, 15, hfd->ci.bootpri);
pl(denv, 16, hfd->ci.dostype);
rdb_crc (part);
idx++;
if (filesys) {
fs = rdb + hardblocksize * idx;
pl(fs, 0, 0x46534844); // "FSHD"
pl(fs, 1, 256 / 4);
pl(fs, 2, 0); // chksum
pl(fs, 3, 7); // hostid
pl(fs, 4, -1); // next
pl(fs, 5, 0); // flags
pl(fs, 8, hfd->ci.dostype);
pl(fs, 9, fsver); // version
pl(fs, 10, 0x100 | 0x80 | 0x20 | 0x10); // patchflags: seglist + globvec + pri + stack
pl(fs, 15, hfd->ci.stacksize); // stack
pl(fs, 16, hfd->ci.priority); // priority
pl(fs, 18, idx + 1); // first lseg
pl(fs, 19, -1); // globvec
rdb_crc(fs);
idx++;
int offset = 0;
for (;;) {
uae_u8 *lseg = rdb + hardblocksize * idx;
int lsegdatasize = hardblocksize - 5 * 4;
if (lseg + hardblocksize > rdb + size)
break;
pl(lseg, 0, 0x4c534547); // "LSEG"
pl(lseg, 1, hardblocksize / 4);
pl(lseg, 2, 0); // chksum
pl(lseg, 3, 7); // hostid
int v = filesyslen - offset;
if (v <= lsegdatasize) {
memcpy(lseg + 5 * 4, filesys + offset, v);
pl(lseg, 4, -1);
pl(lseg, 1, 5 + v / 4);
rdb_crc(lseg);
break;
}
memcpy(lseg + 5 * 4, filesys + offset, lsegdatasize);
offset += lsegdatasize;
idx++;
pl(lseg, 4, idx); // next
rdb_crc(lseg);
}
xfree(filesys);
}
hfd->virtsize += size;
}
void hdf_hd_close (struct hd_hardfiledata *hfd)
{
if (!hfd)
return;
hdf_close (&hfd->hfd);
}
int hdf_hd_open (struct hd_hardfiledata *hfd)
{
struct uaedev_config_info *ci = &hfd->hfd.ci;
if (hdf_open (&hfd->hfd) <= 0)
return 0;
hfd->hfd.unitnum = ci->uae_unitnum;
if (ci->physical_geometry) {
hfd->cyls = ci->pcyls;
hfd->heads = ci->pheads;
hfd->secspertrack = ci->psecs;
} else if (ci->highcyl && ci->surfaces && ci->sectors) {
hfd->cyls = ci->highcyl;
hfd->heads = ci->surfaces;
hfd->secspertrack = ci->sectors;
} else {
getchshd (&hfd->hfd, &hfd->cyls, &hfd->heads, &hfd->secspertrack);
}
hfd->cyls_def = hfd->cyls;
hfd->secspertrack_def = hfd->secspertrack;
hfd->heads_def = hfd->heads;
if (ci->surfaces && ci->sectors) {
uae_u8 buf[512] = { 0 };
hdf_read (&hfd->hfd, buf, 0, 512);
if (buf[0] != 0 && memcmp (buf, _T("RDSK"), 4)) {
ci->highcyl = (hfd->hfd.virtsize / ci->blocksize) / (ci->sectors * ci->surfaces);
ci->dostype = rl (buf);
create_virtual_rdb (&hfd->hfd);
while (ci->highcyl * ci->surfaces * ci->sectors > hfd->cyls_def * hfd->secspertrack_def * hfd->heads_def) {
hfd->cyls_def++;
}
}
}
hfd->size = hfd->hfd.virtsize;
return 1;
}
static uae_u32 vhd_checksum (uae_u8 *p, int offset)
{
int i;
uae_u32 sum;
sum = 0;
for (i = 0; i < 512; i++) {
if (offset >= 0 && i >= offset && i < offset + 4)
continue;
sum += p[i];
}
return ~sum;
}
static int hdf_write2 (struct hardfiledata *hfd, void *buffer, uae_u64 offset, int len);
static int hdf_read2 (struct hardfiledata *hfd, void *buffer, uae_u64 offset, int len);
static void hdf_init_cache (struct hardfiledata *hfd)
{
}
static void hdf_flush_cache (struct hardfiledata *hdf)
{
}
static int hdf_cache_read (struct hardfiledata *hfd, void *buffer, uae_u64 offset, int len)
{
return hdf_read2 (hfd, buffer, offset, len);
}
static int hdf_cache_write (struct hardfiledata *hfd, void *buffer, uae_u64 offset, int len)
{
return hdf_write2 (hfd, buffer, offset, len);
}
int hdf_open (struct hardfiledata *hfd, const TCHAR *pname)
{
int ret;
uae_u8 tmp[512], tmp2[512];
uae_u32 v;
TCHAR filepath[MAX_DPATH];
if ((!pname || pname[0] == 0) && hfd->ci.rootdir[0] == 0)
return 0;
hfd->adide = 0;
hfd->byteswap = 0;
hfd->hfd_type = 0;
hfd->virtual_size = 0;
hfd->virtual_rdb = NULL;
if (!pname)
pname = hfd->ci.rootdir;
cfgfile_resolve_path_out_load(pname, filepath, MAX_DPATH, PATH_HDF);
#ifdef WITH_CHD
TCHAR nametmp[MAX_DPATH];
_tcscpy (nametmp, filepath);
TCHAR *ext = _tcsrchr (nametmp, '.');
if (ext && !_tcsicmp (ext, _T(".chd"))) {
bool chd_readonly = false;
struct zfile *zf = NULL;
if (!hfd->ci.readonly)
zf = zfile_fopen (nametmp, _T("rb+"));
if (!zf) {
chd_readonly = true;
zf = zfile_fopen (nametmp, _T("rb"));
}
if (zf) {
int err = CHDERR_FILE_NOT_WRITEABLE;
hard_disk_file *chdf;
chd_file *cf = new chd_file();
if (!chd_readonly)
err = cf->open(*zf, true, NULL);
if (err == CHDERR_FILE_NOT_WRITEABLE) {
chd_readonly = true;
err = cf->open(*zf, false, NULL);
}
if (err != CHDERR_NONE) {
zfile_fclose (zf);
delete cf;
goto end;
}
chdf = hard_disk_open(cf);
if (!chdf) {
hfd->ci.readonly = true;
hfd->hfd_type = HFD_CHD_OTHER;
hfd->chd_handle = cf;
} else {
hfd->hfd_type = HFD_CHD_HD;
hfd->chd_handle = chdf;
}
if (chd_readonly)
hfd->ci.readonly = true;
hfd->virtsize = cf->logical_bytes();
hfd->handle_valid = -1;
write_log(_T("CHD '%s' mounted as %s, %s.\n"), filepath, chdf ? _T("HD") : _T("OTHER"), hfd->ci.readonly ? _T("read only") : _T("read/write"));
return 1;
}
}
#endif
ret = hdf_open_target (hfd, filepath);
if (ret <= 0)
return ret;
if (hdf_read_target (hfd, tmp, 0, 512) != 512)
goto nonvhd;
v = gl (tmp + 8); // features
if ((v & 3) != 2)
goto nonvhd;
v = gl (tmp + 8 + 4); // version
if ((v >> 16) != 1)
goto nonvhd;
hfd->hfd_type = gl (tmp + 8 + 4 + 4 + 8 + 4 + 4 + 4 + 4 + 8 + 8 + 4);
if (hfd->hfd_type != HFD_VHD_FIXED && hfd->hfd_type != HFD_VHD_DYNAMIC)
goto nonvhd;
v = gl (tmp + 8 + 4 + 4 + 8 + 4 + 4 + 4 + 4 + 8 + 8 + 4 + 4);
if (v == 0)
goto nonvhd;
if (vhd_checksum (tmp, 8 + 4 + 4 + 8 + 4 + 4 + 4 + 4 + 8 + 8 + 4 + 4) != v)
goto nonvhd;
if (hdf_read_target (hfd, tmp2, hfd->physsize - sizeof tmp2, 512) != 512)
goto end;
if (memcmp (tmp, tmp2, sizeof tmp))
goto nonvhd;
hfd->vhd_footerblock = hfd->physsize - 512;
hfd->virtsize = (uae_u64)(gl (tmp + 8 + 4 + 4 + 8 + 4 + 4 +4 + 4 + 8)) << 32;
hfd->virtsize |= gl (tmp + 8 + 4 + 4 + 8 + 4 + 4 +4 + 4 + 8 + 4);
if (hfd->hfd_type == HFD_VHD_DYNAMIC) {
uae_u32 size;
hfd->vhd_bamoffset = gl (tmp + 8 + 4 + 4 + 4);
if (hfd->vhd_bamoffset == 0 || hfd->vhd_bamoffset >= hfd->physsize)
goto end;
if (hdf_read_target (hfd, tmp, hfd->vhd_bamoffset, 512) != 512)
goto end;
v = gl (tmp + 8 + 8 + 8 + 4 + 4 + 4);
if (vhd_checksum (tmp, 8 + 8 + 8 + 4 + 4 + 4) != v)
goto end;
v = gl (tmp + 8 + 8 + 8);
if ((v >> 16) != 1)
goto end;
hfd->vhd_blocksize = gl (tmp + 8 + 8 + 8 + 4 + 4);
hfd->vhd_bamoffset = gl (tmp + 8 + 8 + 4);
hfd->vhd_bamsize = (((hfd->virtsize + hfd->vhd_blocksize - 1) / hfd->vhd_blocksize) * 4 + 511) & ~511;
size = hfd->vhd_bamoffset + hfd->vhd_bamsize;
hfd->vhd_header = xmalloc (uae_u8, size);
if (hdf_read_target (hfd, hfd->vhd_header, 0, size) != size)
goto end;
hfd->vhd_sectormap = xmalloc (uae_u8, 512);
hfd->vhd_sectormapblock = -1;
hfd->vhd_bitmapsize = ((hfd->vhd_blocksize / (8 * 512)) + 511) & ~511;
}
write_log (_T("HDF is VHD %s image, virtual size=%lldK (%llx %lld)\n"),
hfd->hfd_type == HFD_VHD_FIXED ? _T("fixed") : _T("dynamic"),
hfd->virtsize / 1024, hfd->virtsize, hfd->virtsize);
hdf_init_cache (hfd);
return 1;
nonvhd:
hfd->hfd_type = 0;
return 1;
end:
hdf_close_target (hfd);
return 0;
}
int hdf_open (struct hardfiledata *hfd)
{
int v = hdf_open (hfd, NULL);
if (!v)
return v;
get_hd_geometry(&hfd->ci);
hfd->geometry = ini_load(hfd->ci.geometry, true);
return v;
}
void hdf_close (struct hardfiledata *hfd)
{
hdf_flush_cache (hfd);
hdf_close_target (hfd);
#ifdef WITH_CHD
if (hfd->hfd_type == HFD_CHD_OTHER) {
chd_file *cf = (chd_file*)hfd->chd_handle;
cf->close();
delete cf;
} else if (hfd->hfd_type == HFD_CHD_HD) {
hard_disk_file *chdf = (hard_disk_file*)hfd->chd_handle;
chd_file *cf = hard_disk_get_chd(chdf);
hard_disk_close(chdf);
cf->close();
delete cf;
}
xfree(hfd->virtual_rdb);
hfd->virtual_rdb = 0;
hfd->virtual_size = 0;
ini_free(hfd->geometry);
hfd->geometry = NULL;
hfd->chd_handle = NULL;
#endif
hfd->hfd_type = 0;
xfree (hfd->vhd_header);
hfd->vhd_header = NULL;
xfree (hfd->vhd_sectormap);
hfd->vhd_sectormap = NULL;
}
int hdf_dup (struct hardfiledata *dhfd, const struct hardfiledata *shfd)
{
return hdf_dup_target (dhfd, shfd);
}
static uae_u64 vhd_read (struct hardfiledata *hfd, void *v, uae_u64 offset, uae_u64 len)
{
uae_u64 read;
uae_u8 *dataptr = (uae_u8*)v;
//write_log (_T("%08x %08x\n"), (uae_u32)offset, (uae_u32)len);
read = 0;
if (offset & 511)
return read;
if (len & 511)
return read;
while (len > 0) {
uae_u32 bamoffset = (offset / hfd->vhd_blocksize) * 4 + hfd->vhd_bamoffset;
uae_u32 sectoroffset = gl (hfd->vhd_header + bamoffset);
if (sectoroffset == 0xffffffff) {
memset (dataptr, 0, 512);
read += 512;
} else {
int bitmapoffsetbits;
int bitmapoffsetbytes;
uae_u64 sectormapblock;
bitmapoffsetbits = (offset / 512) % (hfd->vhd_blocksize / 512);
bitmapoffsetbytes = bitmapoffsetbits / 8;
sectormapblock = sectoroffset * (uae_u64)512 + (bitmapoffsetbytes & ~511);
if (hfd->vhd_sectormapblock != sectormapblock) {
// read sector bitmap
//write_log (_T("BM %08x\n"), sectormapblock);
if (hdf_read_target (hfd, hfd->vhd_sectormap, sectormapblock, 512) != 512) {
write_log (_T("vhd_read: bitmap read error\n"));
return read;
}
hfd->vhd_sectormapblock = sectormapblock;
}
// block allocated in bitmap?
if (hfd->vhd_sectormap[bitmapoffsetbytes & 511] & (1 << (7 - (bitmapoffsetbits & 7)))) {
// read data block
uae_u64 block = sectoroffset * (uae_u64)512 + hfd->vhd_bitmapsize + bitmapoffsetbits * 512;
//write_log (_T("DB %08x\n"), block);
if (hdf_read_target (hfd, dataptr, block, 512) != 512) {
write_log (_T("vhd_read: data read error\n"));
return read;
}
} else {
memset (dataptr, 0, 512);
}
read += 512;
}
len -= 512;
dataptr += 512;
offset += 512;
}
return read;
}
static int vhd_write_enlarge (struct hardfiledata *hfd, uae_u32 bamoffset)
{
uae_u8 *buf, *p;
int len;
uae_u32 block;
int v;
len = hfd->vhd_blocksize + hfd->vhd_bitmapsize + 512;
buf = xcalloc (uae_u8, len);
if (!hdf_resize_target (hfd, hfd->physsize + len - 512)) {
write_log (_T("vhd_enlarge: failure\n"));
return 0;
}
// add footer (same as 512 byte header)
memcpy (buf + len - 512, hfd->vhd_header, 512);
v = hdf_write_target (hfd, buf, hfd->vhd_footerblock, len);
xfree (buf);
if (v != len) {
write_log (_T("vhd_enlarge: footer write error\n"));
return 0;
}
// write new offset to BAM
p = hfd->vhd_header + bamoffset;
block = hfd->vhd_footerblock / 512;
p[0] = block >> 24;
p[1] = block >> 16;
p[2] = block >> 8;
p[3] = block >> 0;
// write to disk
if (hdf_write_target (hfd, hfd->vhd_header + hfd->vhd_bamoffset, hfd->vhd_bamoffset, hfd->vhd_bamsize) != hfd->vhd_bamsize) {
write_log (_T("vhd_enlarge: bam write error\n"));
return 0;
}
hfd->vhd_footerblock += len - 512;
return 1;
}
static uae_u64 vhd_write (struct hardfiledata *hfd, void *v, uae_u64 offset, uae_u64 len)
{
uae_u64 written;
uae_u8 *dataptr = (uae_u8*)v;
//write_log (_T("%08x %08x\n"), (uae_u32)offset, (uae_u32)len);
written = 0;
if (offset & 511)
return written;
if (len & 511)
return written;
while (len > 0) {
uae_u32 bamoffset = (offset / hfd->vhd_blocksize) * 4 + hfd->vhd_bamoffset;
uae_u32 sectoroffset = gl (hfd->vhd_header + bamoffset);
if (sectoroffset == 0xffffffff) {
if (!vhd_write_enlarge (hfd, bamoffset))
return written;
continue;
} else {
int bitmapoffsetbits;
int bitmapoffsetbytes;
bitmapoffsetbits = (offset / 512) % (hfd->vhd_blocksize / 512);
bitmapoffsetbytes = bitmapoffsetbits / 8;
uae_u64 sectormapblock = sectoroffset * (uae_u64)512 + (bitmapoffsetbytes & ~511);
if (hfd->vhd_sectormapblock != sectormapblock) {
// read sector bitmap
if (hdf_read_target (hfd, hfd->vhd_sectormap, sectormapblock, 512) != 512) {
write_log (_T("vhd_write: bitmap read error\n"));
return written;
}
hfd->vhd_sectormapblock = sectormapblock;
}
// write data
if (hdf_write_target (hfd, dataptr, sectoroffset * (uae_u64)512 + hfd->vhd_bitmapsize + bitmapoffsetbits * 512, 512) != 512) {
write_log (_T("vhd_write: data write error\n"));
return written;
}
// block already allocated in bitmap?
if (!(hfd->vhd_sectormap[bitmapoffsetbytes & 511] & (1 << (7 - (bitmapoffsetbits & 7))))) {
// no, we need to mark it allocated and write the modified bitmap back to the disk
hfd->vhd_sectormap[bitmapoffsetbytes & 511] |= (1 << (7 - (bitmapoffsetbits & 7)));
if (hdf_write_target (hfd, hfd->vhd_sectormap, sectormapblock, 512) != 512) {
write_log (_T("vhd_write: bam write error\n"));
return written;
}
}
written += 512;
}
len -= 512;
dataptr += 512;
offset += 512;
}
return written;
}
int vhd_create (const TCHAR *name, uae_u64 size, uae_u32 dostype)
{
struct hardfiledata hfd;
struct zfile *zf;
uae_u8 *b;
int cyl, cylsec, head, tracksec;
uae_u32 crc, blocksize, batsize, batentrysize;
int ret, i;
time_t tm;
if (size >= (uae_u64)10 * 1024 * 1024 * 1024)
blocksize = 2 * 1024 * 1024;
else
blocksize = 512 * 1024;
batsize = (size + blocksize - 1) / blocksize;
batentrysize = batsize;
batsize *= 4;
batsize += 511;
batsize &= ~511;
ret = 0;
b = NULL;
zf = zfile_fopen (name, _T("wb"), 0);
if (!zf)
goto end;
b = xcalloc (uae_u8, 512 + 1024 + batsize + 512);
if (zfile_fwrite (b, 512 + 1024 + batsize + 512, 1, zf) != 1)
goto end;
memset (&hfd, 0, sizeof hfd);
hfd.virtsize = hfd.physsize = size;
hfd.ci.blocksize = 512;
strcpy ((char*)b, "conectix"); // cookie
b[0x0b] = 2; // features
b[0x0d] = 1; // version
b[0x10 + 6] = 2; // data offset
// time stamp
tm = time (NULL) - 946684800;
b[0x18] = tm >> 24;
b[0x19] = tm >> 16;
b[0x1a] = tm >> 8;
b[0x1b] = tm >> 0;
strcpy ((char*)b + 0x1c, "vpc "); // creator application
b[0x21] = 5; // creator version
strcpy ((char*)b + 0x24, "Wi2k"); // creator host os
// original and current size
b[0x28] = b[0x30] = size >> 56;
b[0x29] = b[0x31] = size >> 48;
b[0x2a] = b[0x32] = size >> 40;
b[0x2b] = b[0x33] = size >> 32;
b[0x2c] = b[0x34] = size >> 24;
b[0x2d] = b[0x35] = size >> 16;