static int ftape_set_rate_test(unsigned int *max_rate)
{
unsigned int error;
qic117_cmd_t command;
int status;
int supported = 0;
TRACE_FUN(ft_t_any);
/* Check if the drive does support the select rate command
* by testing all different settings. If any one is accepted
* we assume the command is supported, else not.
*/
for (*max_rate = 2000; *max_rate >= 250; *max_rate /= 2) {
if (ftape_command(QIC_SELECT_RATE) < 0) {
continue;
}
if (ftape_parameter_wait(qic_rate_code(*max_rate),
1 * FT_SECOND, &status) < 0) {
continue;
}
if (status & QIC_STATUS_ERROR) {
ftape_report_error(&error, &command, 0);
continue;
}
supported = 1; /* did accept a request */
break;
}
TRACE(ft_t_noise, "Select Rate command is%s supported",
supported ? "" : " not");
TRACE_EXIT supported;
}
int ftape_get_drive_status(void)
{
int result;
int status;
TRACE_FUN(ft_t_flow);
ft_no_tape = ft_write_protected = 0;
/* Tape drive is activated now.
* First clear error status if present.
*/
do {
result = ftape_ready_wait(ftape_timeout.reset, &status);
if (result < 0) {
if (result == -ETIME) {
TRACE(ft_t_err, "ftape_ready_wait timeout");
} else if (result == -EINTR) {
TRACE(ft_t_err, "ftape_ready_wait aborted");
} else {
TRACE(ft_t_err, "ftape_ready_wait failed");
}
TRACE_EXIT -EIO;
}
/* Clear error condition (drive is ready !)
*/
if (status & QIC_STATUS_ERROR) {
unsigned int error;
qic117_cmd_t command;
TRACE(ft_t_err, "error status set");
result = ftape_report_error(&error, &command, 1);
if (result < 0) {
TRACE(ft_t_err,
"report_error_code failed: %d", result);
/* hope it's working next time */
ftape_reset_drive();
TRACE_EXIT -EIO;
} else if (error != 0) {
TRACE(ft_t_noise, "error code : %d", error);
TRACE(ft_t_noise, "error command: %d", command);
}
}
if (status & QIC_STATUS_NEW_CARTRIDGE) {
unsigned int error;
qic117_cmd_t command;
const ft_trace_t old_tracing = TRACE_LEVEL;
SET_TRACE_LEVEL(ft_t_bug);
/* Undocumented feature: Must clear (not present!)
* error here or we'll fail later.
*/
ftape_report_error(&error, &command, 1);
SET_TRACE_LEVEL(old_tracing);
TRACE(ft_t_info, "status: new cartridge");
ft_new_tape = 1;
} else {
ft_new_tape = 0;
}
FT_SIGNAL_EXIT(_DONT_BLOCK);
} while (status & QIC_STATUS_ERROR);
ft_no_tape = !(status & QIC_STATUS_CARTRIDGE_PRESENT);
ft_write_protected = (status & QIC_STATUS_WRITE_PROTECT) != 0;
if (ft_no_tape) {
TRACE(ft_t_warn, "no cartridge present");
} else {
if (ft_write_protected) {
TRACE(ft_t_noise, "Write protected cartridge");
}
}
TRACE_EXIT 0;
}
static int ft_check_cmd_restrictions(qic117_cmd_t command)
{
int status = -1;
TRACE_FUN(ft_t_any);
TRACE(ft_t_flow, "%s", qic117_cmds[command].name);
/* A new motion command during an uninterruptible (motion)
* command requires a ready status before the new command can
* be issued. Otherwise a new motion command needs to be
* checked against required status.
*/
if (qic117_cmds[command].cmd_type == motion &&
qic117_cmds[ftape_current_command].non_intr) {
ftape_report_raw_drive_status(&status);
if ((status & QIC_STATUS_READY) == 0) {
TRACE(ft_t_noise,
"motion cmd (%d) during non-intr cmd (%d)",
command, ftape_current_command);
TRACE(ft_t_noise, "waiting until drive gets ready");
ftape_ready_wait(ftape_timeout.seek,
&status);
}
}
if (qic117_cmds[command].mask != 0) {
__u8 difference;
/* Some commands do require a certain status:
*/
if (status == -1) { /* not yet set */
ftape_report_raw_drive_status(&status);
}
difference = ((status ^ qic117_cmds[command].state) &
qic117_cmds[command].mask);
/* Wait until the drive gets
* ready. This may last forever if
* the drive never gets ready...
*/
while ((difference & QIC_STATUS_READY) != 0) {
TRACE(ft_t_noise, "command %d issued while not ready",
command);
TRACE(ft_t_noise, "waiting until drive gets ready");
if (ftape_ready_wait(ftape_timeout.seek,
&status) == -EINTR) {
/* Bail out on signal !
*/
TRACE_ABORT(-EINTR, ft_t_warn,
"interrupted by non-blockable signal");
}
difference = ((status ^ qic117_cmds[command].state) &
qic117_cmds[command].mask);
}
while ((difference & QIC_STATUS_ERROR) != 0) {
int err;
qic117_cmd_t cmd;
TRACE(ft_t_noise,
"command %d issued while error pending",
command);
TRACE(ft_t_noise, "clearing error status");
ftape_report_error(&err, &cmd, 1);
ftape_report_raw_drive_status(&status);
difference = ((status ^ qic117_cmds[command].state) &
qic117_cmds[command].mask);
if ((difference & QIC_STATUS_ERROR) != 0) {
/* Bail out on fatal signal !
*/
FT_SIGNAL_EXIT(_NEVER_BLOCK);
}
}
if (difference) {
/* Any remaining difference can't be solved
* here.
*/
if (difference & (QIC_STATUS_CARTRIDGE_PRESENT |
QIC_STATUS_NEW_CARTRIDGE |
QIC_STATUS_REFERENCED)) {
TRACE(ft_t_warn,
"Fatal: tape removed or reinserted !");
ft_failure = 1;
} else {
TRACE(ft_t_err, "wrong state: 0x%02x should be: 0x%02x",
status & qic117_cmds[command].mask,
qic117_cmds[command].state);
}
TRACE_EXIT -EIO;
}
if (~status & QIC_STATUS_READY & qic117_cmds[command].mask) {
TRACE_ABORT(-EBUSY, ft_t_err, "Bad: still busy!");
}
}
TRACE_EXIT 0;
}
void ftape_report_vendor_id(unsigned int *id)
{
int result;
TRACE_FUN(ft_t_any);
/* We'll try to get a vendor id from the drive. First
* according to the QIC-117 spec, a 16-bit id is requested.
* If that fails we'll try an 8-bit version, otherwise we'll
* try an undocumented query.
*/
result = ftape_report_operation((int *) id, QIC_REPORT_VENDOR_ID, 16);
if (result < 0) {
result = ftape_report_operation((int *) id,
QIC_REPORT_VENDOR_ID, 8);
if (result < 0) {
/* The following is an undocumented call found
* in the CMS code.
*/
result = ftape_report_operation((int *) id, 24, 8);
if (result < 0) {
*id = UNKNOWN_VENDOR;
} else {
TRACE(ft_t_noise, "got old 8 bit id: %04x",
*id);
*id |= 0x20000;
}
} else {
TRACE(ft_t_noise, "got 8 bit id: %04x", *id);
*id |= 0x10000;
}
} else {
TRACE(ft_t_noise, "got 16 bit id: %04x", *id);
}
if (*id == 0x0047) {
int version;
int sign;
if (ftape_report_rom_version(&version) < 0) {
TRACE(ft_t_bug, "report rom version failed");
TRACE_EXIT;
}
TRACE(ft_t_noise, "CMS rom version: %d", version);
ftape_command(QIC_ENTER_DIAGNOSTIC_1);
ftape_command(QIC_ENTER_DIAGNOSTIC_1);
diagnostic_mode = 1;
if (ftape_report_operation(&sign, 9, 8) < 0) {
unsigned int error;
qic117_cmd_t command;
ftape_report_error(&error, &command, 1);
ftape_command(QIC_ENTER_PRIMARY_MODE);
diagnostic_mode = 0;
TRACE_EXIT; /* failure ! */
} else {
TRACE(ft_t_noise, "CMS signature: %02x", sign);
}
if (sign == 0xa5) {
result = ftape_report_operation(&sign, 37, 8);
if (result < 0) {
if (version >= 63) {
*id = 0x8880;
TRACE(ft_t_noise,
"This is an Iomega drive !");
} else {
*id = 0x0047;
TRACE(ft_t_noise,
"This is a real CMS drive !");
}
} else {
*id = 0x0047;
TRACE(ft_t_noise, "CMS status: %d", sign);
}
} else {
*id = UNKNOWN_VENDOR;
}
ftape_command(QIC_ENTER_PRIMARY_MODE);
diagnostic_mode = 0;
}
TRACE_EXIT;
}
int ftape_get_drive_status(int *new_tape, int *no_tape, int *wp_tape)
{
TRACE_FUN(5, "ftape_get_drive_status");
int result;
int status;
*no_tape =
*wp_tape = 0;
/* Tape drive is activated now.
* First clear error status if present.
*/
do {
result = ftape_ready_wait(timeout.reset, &status);
if (result < 0) {
if (result == -ETIME) {
TRACE(1, "ftape_ready_wait timeout");
} else if (result == -EINTR) {
TRACE(1, "ftape_ready_wait aborted");
} else {
TRACE(1, "ftape_ready_wait failed");
}
result = -EIO;
break;
}
/* Clear error condition (drive is ready !)
*/
if (status & QIC_STATUS_ERROR) {
int error;
int command;
TRACE(1, "error status set");
result = ftape_report_error(&error, &command, 1);
if (result < 0) {
TRACEi(1, "report_error_code failed:", result);
ftape_reset_drive(); /* hope it's working next time */
init_drive_needed = 1;
result = -EIO;
break;
} else if (error != 0) {
TRACEi(4, "error code :", error);
TRACEi(4, "error command:", command);
}
}
if (status & QIC_STATUS_NEW_CARTRIDGE) {
int error;
int command;
int old_tracing = tracing;
/* Undocumented feature: Must clear (not present!) error
* here or we'll fail later.
*/
tracing = 0;
ftape_report_error(&error, &command, 1);
tracing = old_tracing;
TRACE(3, "status: new cartridge");
*new_tape = 1;
}
} while (status & QIC_STATUS_ERROR);
*no_tape = !(status & QIC_STATUS_CARTRIDGE_PRESENT);
*wp_tape = (status & QIC_STATUS_WRITE_PROTECT);
if (*no_tape) {
TRACE(1, "no cartridge present");
} else {
if (*wp_tape) {
TRACE(2, "Write protected cartridge");
}
}
TRACE_EXIT;
return result;
}
