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accessible kernel routines - aha1 54x
accessible kernel routines - Overview
The COHERENT kernel contains a number of routines that can
They are as follows :
defend
defer
dmago
dmaoff
dmaon
dmareq
inb
lock
locked
outb
panic
pollopen
pollwake
printf
sleep
super
timeout
unlock
wakeup
be accessed by device drivers .
Execute deferred functions
Defer function execution
Enable DMA transfers
Disable DMA transfers
Prepare for DMA transfer
Request block1/0. avoiding DMA straddles
Read a byte from an l/0 port
Lock a gate
See if a gate is locked
Output a byte to an1/0 port
Fatal system error
Initiate driver polled event
Terminate driver polled event
Formatted print
Wait for event or signal
Verify super-user
Defer function execution
Unlock a gate
Wakeup processes sleeping on an event
See Also
device drivers
actvsigO - Signal-Handler Routine
Activate signal handler
actvsigQ
The routine actvsig activates a signal handler. For example:
if ( SELF->p_ssig & & nondsig ( ) )
actvsig ( ) ;
If the current process has received a signal (p_ssig being non-zero) that is not ignored (not default
signal handling). calling actvsig will activate it. "Activate" means that the process is moved from
the kernel's "suspended" list to its "ready" list, where it will await further execution by the kernel.
If the current process is terminated, actvsig will not return.
See Also
signal-handler routines
aha1 54x -
Device Driver
Adaptec AHA- 1 54x device driver
The device driver aha 1 54x lets you use SCSI interface devices attached to an Adaptec AHA- 1 54x
series host adapter. This driver has major number 1 3 . It can be accessed either as a block-special
device or as a character-special device. The minor number specifies the device and partition
number for disk-type devices, letting you use up to eight SCSI-IDs , with up to four logical unit
numbers (LUNs) per SCSI-ID and up to four partitions per LUN.
The first open call on a SCSI disk device allocates memory for the partition table and reads it into
memory.
LEXICON