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flash(9) [netbsd man page]

FLASH(9)						   BSD Kernel Developer's Manual						  FLASH(9)

NAME
flash -- subsystem for flash-like memory devices SYNOPSIS
#include <dev/flash/flash.h> device_t flash_attach_mi(const struct flash_interface *fl, device_t dev); DESCRIPTION
Flash-like devices can register themselves to the flash layer with the flash_hw_if structure. This structure has function pointers and other fields. The attachment can be done by calling flash_attach_mi() with this structure and the device's device_t as an argument. Return value is the flash layer device. The flash_interface structure is shown below. struct flash_interface { int (*erase) (device_t, struct flash_erase_instruction *); int (*read) (device_t, off_t, size_t, size_t *, uint8_t *); int (*write) (device_t, off_t, size_t, size_t *, const uint8_t *); int (*block_markbad)(device_t, uint64_t); int (*block_isbad)(device_t, uint64_t); int (*sync) (device_t); int (*submit)(device_t, struct buf *); /* storage for partition info */ struct flash_partition partition; /* total size of mtd */ flash_addr_t size; uint32_t page_size; uint32_t erasesize; uint32_t writesize; uint32_t minor; uint8_t type; }; SEE ALSO
flash(4), nand(9) AUTHORS
Adam Hoka <ahoka@NetBSD.org> BSD
March 31, 2011 BSD

Check Out this Related Man Page

DEVICE_GET_STATE(9)					   BSD Kernel Developer's Manual				       DEVICE_GET_STATE(9)

NAME
device_get_state, device_busy, device_unbusy, device_is_alive, device_is_attached -- manipulate device state SYNOPSIS
#include <sys/param.h> #include <sys/bus.h> device_state_t device_get_state(device_t dev); void device_busy(device_t dev); void device_unbusy(device_t dev); int device_is_alive(device_t dev); int device_is_attached(device_t dev); DESCRIPTION
The current state of a device is accessed by calling device_get_state() which returns DS_NOTPRESENT, DS_ALIVE, DS_ATTACHED or DS_BUSY (described in device(9)). To test see if a device was successfully probed, call device_is_alive() which simply returns if the state is greater or equal to DS_ALIVE. To test see if a device was successfully attached, call device_is_attached() which simply returns if the state is greater or equal to DS_ATTACHED. Each device has a busy count which is incremented when device_busy() is called and decremented when device_unbusy() is called. Both routines return an error if the device state is less than DS_ATTACHED. When device_busy() is called on a device in the DS_ATTACHED state, the device changes to the DS_BUSY state. When device_unbusy() is called and after decrementing, the busy count for the device is zero, the device changes to the DS_ATTACHED state. SEE ALSO
device(9) AUTHORS
This manual page was written by Doug Rabson. BSD
June 16, 1998 BSD
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