ddi_io_putb man page on Solaris

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ddi_io_put8(9F)		 Kernel Functions for Drivers	       ddi_io_put8(9F)

NAME
       ddi_io_put8,   ddi_io_put16,  ddi_io_put32,  ddi_io_putw,  ddi_io_putl,
       ddi_io_putb - write data to the mapped device register in I/O space

SYNOPSIS
       #include <sys/ddi.h>
       #include <sys/sunddi.h>

       void ddi_io_put8(ddi_acc_handle_t handle,  uint8_t  *dev_addr,  uint8_t
       value);

       void   ddi_io_put16(ddi_acc_handle_t   handle,	uint16_t    *dev_addr,
       uint16_t value);

       void  ddi_io_put32(ddi_acc_handle_t   handle,	uint32_t    *dev_addr,
       uint32_t value);

INTERFACE LEVEL
       Solaris DDI specific (Solaris DDI).

PARAMETERS
       handle	       Data  access  handle returned from setup calls, such as
		       ddi_regs_map_setup(9F).

       dev_addr	       Base device address.

       value	       Data to be written to the device.

DESCRIPTION
       These routines generate	a  write  of  various  sizes  to  the	device
       address, dev_addr, in I/O space. The ddi_io_put8(), ddi_io_put16(), and
       ddi_io_put32() functions write 8 bits, 16 bits,	and 32 bits  of	 data,
       respectively, to the device address, dev_addr.

       Each  individual	 datum	will automatically be translated to maintain a
       consistent view between the host and the device based  on  the  encoded
       information  in	the  data  access handle.  The translation may involve
       byte-swapping if the host and the device have incompatible endian char‐
       acteristics.

CONTEXT
       These functions can be called from user, kernel, or interrupt context.

SEE ALSO
       isa(4),	 ddi_io_get8(9F),   ddi_io_rep_get8(9F),  ddi_io_rep_put8(9F),
       ddi_regs_map_setup(9F), ddi_device_acc_attr(9S)

NOTES
       For drivers using these functions, it may not be	 easy  to  maintain  a
       single	source	to  support  devices  with multiple bus versions.  For
       example, devices may offer I/O space in	ISA bus (see  isa(4)) but mem‐
       ory  space only in  PCI local bus.  This is especially true in instruc‐
       tion set architectures  such as x86 where accesses to  the  memory  and
       I/O space are different.

       The functions described in this manual page previously used symbolic
	names  which specified their data access size; the function names have
       been changed so they now specify a  fixed-width	data  size.   See  the
       following table for the new name equivalents:

       ┌───────────────────────────────────────────────────────────┐
       │Previous Name			New Name		   │
       │ddi_io_putb			ddi_io_put8		   │
       │ddi_io_putw			ddi_io_put16		   │
       │ddi_io_putl			ddi_io_put32		   │
       └───────────────────────────────────────────────────────────┘

SunOS 5.10			 29 June 1999		       ddi_io_put8(9F)
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