rtems_nvdisk_driver_handlers Struct Reference

#include <nvdisk.h>

Data Fields
int(*	read )(uint32_t device, uint32_t flags, void *base, uint32_t offset, void *buffer, size_t size)
int(*	write )(uint32_t device, uint32_t flags, void *base, uint32_t offset, const void *buffer, size_t size)
int(*	verify )(uint32_t device, uint32_t flags, void *base, uint32_t offset, const void *buffer, size_t size)

Detailed Description

NV Low Level driver handlers.

Typically this structure is part of a table of handlers in the device which is referenced in the nvdisk configuration table. The reference is kept in the driver and used all the time to manage the nv device, therefore it must always exist.

Field Documentation

read

int(* rtems_nvdisk_driver_handlers::read) (uint32_t device, uint32_t flags, void *base, uint32_t offset, void *buffer, size_t size)

Read data from the device into the buffer. Return an errno error number if the data cannot be read.

Parameters

device	The device to read data from.
flags	Device specific flags for the driver.
base	The base address of the device.
offset	The offset in the segment to read.
buffer	The buffer to read the data into.
size	The amount of data to read.

Return values

0	No error.
EIO	The read did not complete.

verify

int(* rtems_nvdisk_driver_handlers::verify) (uint32_t device, uint32_t flags, void *base, uint32_t offset, const void *buffer, size_t size)

Verify data in the buffer to the data in the device. Return an errno error number if the device cannot be read or the data verified.

Parameters

device	The device to verify the data with.
flags	Device specific flags for the driver.
base	The base address of the device.
offset	The offset in the device to verify.
buffer	The buffer to verify the data in the device with.
size	The amount of data to verify.

Return values

0	No error.
EIO	The data did not verify.

write

int(* rtems_nvdisk_driver_handlers::write) (uint32_t device, uint32_t flags, void *base, uint32_t offset, const void *buffer, size_t size)

Write data from the buffer to the device. Return an errno error number if the device cannot be written to.

Parameters

device	The device to write data to.
flags	Device specific flags for the driver.
base	The base address of the device.
offset	The offset in the device to write to.
buffer	The buffer to write the data from.
size	The amount of data to write.

Return values

0	No error.
EIO	The write did not complete or verify.

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The documentation for this struct was generated from the following file:

• cpukit/include/rtems/nvdisk.h