ddi_io_put8(9f) [sunos man page]

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 memory space only in	PCI local bus.	This is especially true in
       instruction 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)

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 memory space only in	PCI local bus.	This is especially true in
       instruction 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)