ddi_fm_error

- I/O error status structure

Synopsis

#include <sys/ddifm.h>

Interface Level

Solaris DDI specific (Solaris DDI)

Description

A ddi_fm_error_t structure contains common data necessary for I/O error handling. A pointer to a ddi_fm_error_t structure is passed to error handling callbacks where it can then be used in a call to pci_ereport_post(). The same structure is also returned to callers of ddi_fm_acc_err_get() and ddi_fm_dma_err_get().

Structure Members

int                 fme_version;
uint64_t            fme_ena;
int                 fme_status;
int                 fme_flag;
ddi_acc_handle_t    fme_acc_handle;
ddi_dma_handle_t    fme_dma_handle;

The fme_version is the current version of ddi_fm_error_t. Valid values for the version are: DDI_FME_VER0 and DDI_FME_VER1.

The fme_ena is the FMA event protocol Format 1 Error Numeric Association (ENA) for this error condition.

The fme_flag field is set to DDI_FM_ERR_EXPECTED if the error is the result of a DDI_ACC_CAUTIOUS protected operation. In this case, fme_acc_handle is valid and the driver should check for and report only errors not associated with the DDI_ACC_CAUTIOUS protected access operation. This field can also be set to DDI_FM_ERR_POKE or DDI_FM_ERR_PEEK if the error is the result of a ddi_peek(9F) or ddi_poke(9F) operation. The driver should handle these in a similar way to DDI_FM_ERR_EXPECTED. Otherwise, ddi_flag is set to DDI_FM_ERR_UNEXPECTED and the driver must perform the full range of error handling tasks.

The fme_status indicates current status of an error handler callback or resource handle:

DDI_FM_OK

No errors were detected.

DDI_FM_FATAL

An error which is considered fatal to the operational state of the system was detected.

DDI_FM_NONFATAL

An error which is not considered fatal to the operational state of the system was detected.

DDI_FM_UNKNOWN

An error was detected, but the driver was unable to determine the impact of the error on the operational state of the system.

The fme_acc_handle is the valid access handle associated with the error that can be returned from pci_ereport_post()

The fme_dma_handle is the valid DMA handle associated with the error that can be returned from pci_ereport_post()

Attributes

See attributes(5) for descriptions of the following attributes:

See Also

attributes(5), ddi_fm_acc_err_get(9F), ddi_fm_dma_err_get(9F), ddi_fm_handler_register(9F), ddi_peek(9F), ddi_poke(9F), pci_ereport_post(9F)

Writing Device Drivers