headers.htm

What is this ``device driver stuff anyway? Here s a very short introduction to the concept.

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<strong><tt>
iohandle_to_phys
</tt></strong>
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Converts an I/O handle to a valid system physical address.
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<strong><tt>
io_zero
</tt></strong>
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Zeros a block of memory in bus address space.
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<strong><tt>
IS_KSEG_VA
</tt></strong>
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Determines if the specified address is located in the
kernel-unmapped address space.
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<strong><tt>
IS_SEG0_VA
</tt></strong>
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Determines if the specified address is located in the
user-mapped address space.
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<strong><tt>
IS_SEG1_VA
</tt></strong>
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Determines if the specified address is located in the
kernel-mapped address space.
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<strong><tt>
kernel_isrthread
</tt></strong>
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Starts a fixed priority kernel thread dedicated to interrupt service.
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<strong><tt>
kernel_thread_w_arg
</tt></strong>
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Starts a kernel thread with a calling argument passed in.
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<strong><tt>
KSEG_TO_PHYS
</tt></strong>
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Converts a kernel-unmapped virtual address to a physical address.
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<strong><tt>
lock_done
</tt></strong>
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Releases a complex lock.
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<strong><tt>
lock_init
</tt></strong>
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Initializes a complex lock.
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<strong><tt>
lock_read
</tt></strong>
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Asserts a complex lock with read-only access.
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<strong><tt>
lock_terminate
</tt></strong>
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Terminates, using a complex lock.
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<strong><tt>
lock_try_read
</tt></strong>
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Tries to assert a complex lock with read-only access.
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<strong><tt>
lock_try_write
</tt></strong>
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Tries to assert a complex lock with write access.
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<strong><tt>
lock_write
</tt></strong>
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Asserts a complex lock with write access.
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<strong><tt>
major
</tt></strong>
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Returns the device major number.
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<strong><tt>
makedev
</tt></strong>
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Returns a <tt>dev_t</tt>.
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<strong><tt>
MALLOC
</tt></strong>
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Allocates a variable-size section of kernel virtual memory.
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<strong><tt>
mb
</tt></strong>
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Performs a memory barrier.
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<strong><tt>
minor
</tt></strong>
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Returns the device minor number.
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<strong><tt>
minphys
</tt></strong>
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Bounds the data transfer size.
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<strong><tt>
mpsleep
</tt></strong>
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Blocks (puts to sleep) the current kernel thread.
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<strong><tt>
ntohl
</tt></strong>
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Converts longword values from network-to-host byte order.
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<strong><tt>
ntohs
</tt></strong>
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Converts word values from network-to-host byte order.
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<strong><tt>
ovbcopy
</tt></strong>
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Copies a byte string with a specified limit.
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<strong><tt>
panic
</tt></strong>
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Causes a system crash.
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<strong><tt>
physio
</tt></strong>
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Implements raw I/O.
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<strong><tt>
PHYS_TO_KSEG
</tt></strong>
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Converts a physical address to a kernel-unmapped virtual address.
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<strong><tt>
pmap_extract
</tt></strong>
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Extracts a physical page address.
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<strong><tt>
pmap_kernel
</tt></strong>
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Returns the physical map handle for the kernel.
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<strong><tt>
pmap_set_modify
</tt></strong>
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Sets the modify bits of the specified physical page.
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<strong><tt>
printf
</tt></strong>
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Prints text to the console and the error logger.
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<strong><tt>
privileged
</tt></strong>
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Checks for proper privileges.
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<strong><tt>
psignal
</tt></strong>
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Sends a signal to a process.
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<strong><tt>
queue_init
</tt></strong>
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Initializes the specified queue.
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<strong><tt>
READ_BUS_D8
</tt></strong>
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Reads a byte (8 bits) from a device register.
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<strong><tt>
READ_BUS_D16
</tt></strong>
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Reads a word (16 bits) from a device register.
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<strong><tt>
READ_BUS_D32
</tt></strong>
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Reads a longword (32 bits) from a device register.
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<strong><tt>
READ_BUS_D64
</tt></strong>
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Reads a quadword (64 bits) from a device register.
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<strong><tt>
readdisklabel
</tt></strong>
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Reads a disk label from a device.
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<strong><tt>
read_io_port
</tt></strong>
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Reads data from a device register.
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<strong><tt>
register_callback
</tt></strong>
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Registers a callback request (interface).
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<strong><tt>
remque
</tt></strong>
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Removes an element from the queue.
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<strong><tt>
rmalloc
</tt></strong>
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Allocates size units from the given resource map.
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<strong><tt>
rmfree
</tt></strong>
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Frees space previously allocated into the specified resource map.
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<strong><tt>
rmget
</tt></strong>
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Allocates size units from the given resource map.
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<strong><tt>
rminit
</tt></strong>
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Initializes a resource map.
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<strong><tt>
round_page
</tt></strong>
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Rounds the specified address.
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<strong><tt>
rt_post_callout
</tt></strong>
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Posts an interface to be called at a lower IPL.
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<strong><tt>
rt_post_callout_ipl
</tt></strong>
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Posts an interface to be called at a specified IPL.
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<strong><tt>
select_dequeue
</tt></strong>
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Removes the last kernel thread waiting for an event.
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<strong><tt>
select_dequeue_all
</tt></strong>
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Removes all kernel threads waiting for an event.
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<strong><tt>
select_enqueue
</tt></strong>
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Adds the current kernel thread.
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<strong><tt>
select_wakeup
</tt></strong>
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Wakes up a kernel thread.
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<strong><tt>
setdisklabel
</tt></strong>
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Sets a disk label.
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<strong><tt>
simple_lock
</tt></strong>
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Asserts a simple lock.
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<strong><tt>
simple_lock_init
</tt></strong>
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Initializes a simple lock structure.
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<strong><tt>
simple_lock_terminate
</tt></strong>
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Terminates, using a simple lock.
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<strong><tt>
simple_lock_try
</tt></strong>
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Tries to assert a simple lock.
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<strong><tt>
simple_unlock
</tt></strong>
</td>
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Releases a simple lock.
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<strong><tt>
sleep
</tt></strong>
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Puts a calling process to sleep.
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<strong><tt>
spl
</tt></strong>
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Sets the processor priority to mask different levels of interrupts.
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<strong><tt>
strcmp
</tt></strong>
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Compares two null-terminated character strings.
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<strong><tt>