/*
* Return the status of the internal I/O started on the specified ccw device.
* Perform BASIC SENSE if required.
*/
static enum io_status ccwreq_status(struct ccw_device *cdev, struct irb *lcirb)
{
struct irb *irb = &cdev->private->irb;
struct cmd_scsw *scsw = &irb->scsw.cmd;
enum uc_todo todo;
/* Perform BASIC SENSE if needed. */
if (ccw_device_accumulate_and_sense(cdev, lcirb))
return IO_RUNNING;
/* Check for halt/clear interrupt. */
if (scsw->fctl & (SCSW_FCTL_HALT_FUNC | SCSW_FCTL_CLEAR_FUNC))
return IO_KILLED;
/* Check for path error. */
if (scsw->cc == 3 || scsw->pno)
return IO_PATH_ERROR;
/* Handle BASIC SENSE data. */
if (irb->esw.esw0.erw.cons) {
CIO_TRACE_EVENT(2, "sensedata");
CIO_HEX_EVENT(2, &cdev->private->dev_id,
sizeof(struct ccw_dev_id));
CIO_HEX_EVENT(2, &cdev->private->irb.ecw, SENSE_MAX_COUNT);
/* Check for command reject. */
if (irb->ecw[0] & SNS0_CMD_REJECT)
return IO_REJECTED;
/* Ask the driver what to do */
if (cdev->drv && cdev->drv->uc_handler) {
todo = cdev->drv->uc_handler(cdev, lcirb);
CIO_TRACE_EVENT(2, "uc_response");
CIO_HEX_EVENT(2, &todo, sizeof(todo));
switch (todo) {
case UC_TODO_RETRY:
return IO_STATUS_ERROR;
case UC_TODO_RETRY_ON_NEW_PATH:
return IO_PATH_ERROR;
case UC_TODO_STOP:
return IO_REJECTED;
default:
return IO_STATUS_ERROR;
}
}
/* Assume that unexpected SENSE data implies an error. */
return IO_STATUS_ERROR;
}
static enum io_status ccwreq_status(struct ccw_device *cdev, struct irb *lcirb)
{
struct irb *irb = &cdev->private->irb;
struct cmd_scsw *scsw = &irb->scsw.cmd;
enum uc_todo todo;
if (ccw_device_accumulate_and_sense(cdev, lcirb))
return IO_RUNNING;
if (scsw->fctl & (SCSW_FCTL_HALT_FUNC | SCSW_FCTL_CLEAR_FUNC))
return IO_KILLED;
if (scsw->cc == 3 || scsw->pno)
return IO_PATH_ERROR;
if (irb->esw.esw0.erw.cons) {
CIO_TRACE_EVENT(2, "sensedata");
CIO_HEX_EVENT(2, &cdev->private->dev_id,
sizeof(struct ccw_dev_id));
CIO_HEX_EVENT(2, &cdev->private->irb.ecw, SENSE_MAX_COUNT);
if (irb->ecw[0] & SNS0_CMD_REJECT)
return IO_REJECTED;
if (cdev->drv && cdev->drv->uc_handler) {
todo = cdev->drv->uc_handler(cdev, lcirb);
CIO_TRACE_EVENT(2, "uc_response");
CIO_HEX_EVENT(2, &todo, sizeof(todo));
switch (todo) {
case UC_TODO_RETRY:
return IO_STATUS_ERROR;
case UC_TODO_RETRY_ON_NEW_PATH:
return IO_PATH_ERROR;
case UC_TODO_STOP:
return IO_REJECTED;
default:
return IO_STATUS_ERROR;
}
}
return IO_STATUS_ERROR;
}
