(D2) - Driver entry point routines

Intro

introduction to driver entry point routines

biostart

start an I/O transfer

chpoll

poll entry point for a non-STREAMS character device driver

close

relinquish access to a device

config

inform drivers of hardware device instances to be managed

devinfo

obtain information about a device

drvctl

handle custom I/O operations from another driver

halt

shut down the driver when the system shuts down

init

initialize a static device driver

intr

process a device interrupt

ioctl

perform device-specific control functions

_load

initialize a loadable driver

mmap

support virtual mapping for memory-mapped device

open

gain access to a device

read

read data from a character device

size

return size of logical block device

start

initialize a static device driver (with interrupts enabled)

strategy

start an old-style block I/O transfer

_unload

prepare to unload a driver

_verify

verify that driver supports a particular device

write

write data to a character device