/* Sends a CDB to the scanner. Also sends the parameters and receives
* the data, if necessary. When this function returns with a
* SANE_STATUS_GOOD, the SCSI command has been completed.
*
* Note: I don't know about deferred commands.
*/
static SANE_Status sanei_umaxusb_cmd(int fd, const void *src, size_t src_size, void *dst, size_t * dst_size)
{
unsigned char result;
size_t cmd_size = CDB_SIZE (*(const char *) src);
size_t param_size = src_size - cmd_size;
const char * param_ptr = ((const char *) src) + cmd_size;
size_t tmp_len;
DBG(DBG_info, "Sending SCSI cmd 0x%02x cdb len %ld, param len %ld, result len %ld\n", ((const unsigned char *)src)[0], (long)cmd_size, (long)param_size, dst_size? (long)*dst_size:(long)0);
/* This looks like some kind of pre-initialization. */
sanei_pv8630_write_byte(fd, PV8630_UNKNOWN, 0x0c);
sanei_pv8630_wait_byte(fd, PV8630_RSTATUS, 0xf0, 0xff, 1000);
sanei_pv8630_write_byte(fd, PV8630_UNKNOWN, 0x04);
/* Send the CDB and check it's been received OK. */
sanei_pv8630_write_byte(fd, PV8630_RMODE, 0x16);
sanei_pv8630_flush_buffer(fd);
sanei_pv8630_prep_bulkwrite(fd, cmd_size);
tmp_len = cmd_size;
sanei_pv8630_bulkwrite(fd, src, &tmp_len);
sanei_pv8630_wait_byte(fd, PV8630_RSTATUS, 0xf8, 0xff, 1000);
sanei_pv8630_flush_buffer(fd);
sanei_pv8630_prep_bulkread(fd, 1);
result = 0xA5; /* to be sure */
tmp_len = 1;
sanei_pv8630_bulkread(fd, &result, &tmp_len);
if (result != 0) {
DBG(DBG_info, "error in sanei_pv8630_bulkread (got %02x)\n", result);
if (result == 8) {
pv8630_mini_init_scanner(fd);
}
return(SANE_STATUS_IO_ERROR);
}
/* Send the parameters and check they've been received OK. */
if (param_size) {
sanei_pv8630_flush_buffer(fd);
sanei_pv8630_prep_bulkwrite(fd, param_size);
tmp_len = param_size;
sanei_pv8630_bulkwrite(fd, param_ptr, &tmp_len);
sanei_pv8630_wait_byte(fd, PV8630_RSTATUS, 0xf8, 0xff, 1000);
sanei_pv8630_flush_buffer(fd);
sanei_pv8630_prep_bulkread(fd, 1);
result = 0xA5; /* to be sure */
tmp_len = 1;
sanei_pv8630_bulkread(fd, &result, &tmp_len);
if (result != 0) {
DBG(DBG_info, "error in sanei_pv8630_bulkread (got %02x)\n", result);
if (result == 8) {
pv8630_mini_init_scanner(fd);
}
return(SANE_STATUS_IO_ERROR);
}
}
/* If the SCSI command expect a return, get it. */
if (dst_size != NULL && *dst_size != 0 && dst != NULL) {
sanei_pv8630_flush_buffer(fd);
sanei_pv8630_prep_bulkread(fd, *dst_size);
sanei_pv8630_bulkread(fd, dst, dst_size);
DBG(DBG_info, " SCSI cmd returned %lu bytes\n", (u_long) *dst_size);
sanei_pv8630_wait_byte(fd, PV8630_RSTATUS, 0xf8, 0xff, 1000);
sanei_pv8630_flush_buffer(fd);
sanei_pv8630_prep_bulkread(fd, 1);
result = 0x5A; /* just to be sure */
tmp_len = 1;
sanei_pv8630_bulkread(fd, &result, &tmp_len);
if (result != 0) {
DBG(DBG_info, "error in sanei_pv8630_bulkread (got %02x)\n", result);
if (result == 8) {
pv8630_mini_init_scanner(fd);
}
return(SANE_STATUS_IO_ERROR);
}
}
sanei_pv8630_write_byte(fd, PV8630_UNKNOWN, 0x04);
sanei_pv8630_write_byte(fd, PV8630_RMODE, 0x02);
sanei_pv8630_write_byte(fd, PV8630_RMODE, 0x02);
sanei_pv8630_wait_byte(fd, PV8630_RSTATUS, 0xd0, 0xff, 1000);
DBG(DBG_info, " SCSI command successfully executed\n");
return(SANE_STATUS_GOOD);
}
int get_scsi_cdb_size(struct scsi_cmd *cmd)
{
return CDB_SIZE(cmd);
}
