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Big change!

Browse Source 
We now are starting to have universal MMC routines. To do this we need
to have function pointers to the OS-specific MMC send/run command.

Expect some breakage. Down the line though this will increase code reuse,
reliabilty, and make the library more user-customizable.
This commit is contained in:
rocky
2004-07-26 02:54:37 +00:00
parent cf5ec43903
commit 20e8974df8
10 changed files with 220 additions and 150 deletions
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128
lib/scsi_mmc.c
View File

@@ -1,6 +1,6 @@
/* Common MMC routines.
/* Common SCSI Multimedia Command (MMC) routines.
$Id: scsi_mmc.c,v 1.7 2004/07/22 09:52:17 rocky Exp $
$Id: scsi_mmc.c,v 1.8 2004/07/26 02:54:37 rocky Exp $
Copyright (C) 2004 Rocky Bernstein <rocky@panix.com>
@@ -27,6 +27,10 @@
#include <cdio/scsi_mmc.h>
#include "cdio_private.h"
#ifdef HAVE_STRING_H
#include <string.h>
#endif
/*!
On input a MODE_SENSE command was issued and we have the results
in p. We interpret this and return a bit mask set according to the
@@ -89,7 +93,8 @@ scsi_mmc_get_cmd_len(uint8_t scsi_cmd)
We return 0 if command completed successfully and 1 if not.
*/
int
scsi_mmc_run_cmd( const CdIo *cdio, int i_timeout, const scsi_mmc_cdb_t *p_cdb,
scsi_mmc_run_cmd( const CdIo *cdio, int i_timeout,
const scsi_mmc_cdb_t *p_cdb,
scsi_mmc_direction_t e_direction, unsigned int i_buf,
/*in/out*/ void *p_buf )
{
@@ -100,3 +105,120 @@ scsi_mmc_run_cmd( const CdIo *cdio, int i_timeout, const scsi_mmc_cdb_t *p_cdb,
} else
return 1;
}
#define DEFAULT_TIMEOUT_MS 6000
/*!
* Eject using SCSI MMC commands. Return 0 if successful.
*/
int
scsi_mmc_eject_media( const CdIo *cdio )
{
int i_status;
scsi_mmc_cdb_t cdb = {{0, }};
uint8_t buf[1];
scsi_mmc_run_cmd_fn_t run_scsi_mmc_cmd;
if ( ! cdio || ! cdio->op.run_scsi_mmc_cmd )
return -2;
run_scsi_mmc_cmd = cdio->op.run_scsi_mmc_cmd;
CDIO_MMC_SET_COMMAND(cdb.field, CDIO_MMC_GPCMD_ALLOW_MEDIUM_REMOVAL);
i_status = run_scsi_mmc_cmd (cdio->env, DEFAULT_TIMEOUT_MS,
scsi_mmc_get_cmd_len(cdb.field[0]), &cdb,
SCSI_MMC_DATA_WRITE, 0, &buf);
if (0 != i_status)
return i_status;
CDIO_MMC_SET_COMMAND(cdb.field, CDIO_MMC_GPCMD_START_STOP);
cdb.field[4] = 1;
i_status = run_scsi_mmc_cmd (cdio->env, DEFAULT_TIMEOUT_MS,
scsi_mmc_get_cmd_len(cdb.field[0]), &cdb,
SCSI_MMC_DATA_WRITE, 0, &buf);
if (0 != i_status)
return i_status;
CDIO_MMC_SET_COMMAND(cdb.field, CDIO_MMC_GPCMD_START_STOP);
cdb.field[4] = 2; /* eject */
return run_scsi_mmc_cmd (cdio->env, DEFAULT_TIMEOUT_MS,
scsi_mmc_get_cmd_len(cdb.field[0]), &cdb,
SCSI_MMC_DATA_WRITE, 0, &buf);
}
/*! Packet driver to read mode2 sectors.
Can read only up to 25 blocks.
*/
int
scsi_mmc_read_sectors ( const CdIo *cdio, void *p_buf, lba_t lba,
int sector_type, unsigned int nblocks )
{
scsi_mmc_cdb_t cdb = {{0, }};
scsi_mmc_run_cmd_fn_t run_scsi_mmc_cmd;
if ( ! cdio || ! cdio->op.run_scsi_mmc_cmd )
return -2;
run_scsi_mmc_cmd = cdio->op.run_scsi_mmc_cmd;
CDIO_MMC_SET_COMMAND(cdb.field, CDIO_MMC_GPCMD_READ_CD);
CDIO_MMC_SET_READ_TYPE (cdb.field, sector_type);
CDIO_MMC_SET_READ_LBA (cdb.field, lba);
CDIO_MMC_SET_READ_LENGTH(cdb.field, nblocks);
CDIO_MMC_SET_MAIN_CHANNEL_SELECTION_BITS(cdb.field,
CDIO_MMC_MCSB_ALL_HEADERS);
return run_scsi_mmc_cmd (cdio->env, DEFAULT_TIMEOUT_MS,
scsi_mmc_get_cmd_len(cdb.field[0]), &cdb,
SCSI_MMC_DATA_READ,
CDIO_CD_FRAMESIZE_RAW * nblocks,
p_buf);
}
int
scsi_mmc_set_bsize ( const CdIo *cdio, unsigned int bsize)
{
scsi_mmc_cdb_t cdb = {{0, }};
struct
{
uint8_t reserved1;
uint8_t medium;
uint8_t reserved2;
uint8_t block_desc_length;
uint8_t density;
uint8_t number_of_blocks_hi;
uint8_t number_of_blocks_med;
uint8_t number_of_blocks_lo;
uint8_t reserved3;
uint8_t block_length_hi;
uint8_t block_length_med;
uint8_t block_length_lo;
} mh;
scsi_mmc_run_cmd_fn_t run_scsi_mmc_cmd;
if ( ! cdio || ! cdio->op.run_scsi_mmc_cmd )
return -2;
run_scsi_mmc_cmd = cdio->op.run_scsi_mmc_cmd;
memset (&mh, 0, sizeof (mh));
mh.block_desc_length = 0x08;
mh.block_length_hi = (bsize >> 16) & 0xff;
mh.block_length_med = (bsize >> 8) & 0xff;
mh.block_length_lo = (bsize >> 0) & 0xff;
CDIO_MMC_SET_COMMAND(cdb.field, CDIO_MMC_GPCMD_MODE_SELECT_6);
cdb.field[1] = 1 << 4;
cdb.field[4] = 12;
return run_scsi_mmc_cmd (cdio->env, DEFAULT_TIMEOUT_MS,
scsi_mmc_get_cmd_len(cdb.field[0]), &cdb,
SCSI_MMC_DATA_WRITE, sizeof(mh), &mh);
}