pci_config_get8(9F)					   Kernel Functions for Drivers 				       pci_config_get8(9F)

NAME

       pci_config_get8,  pci_config_get16,  pci_config_get32,  pci_config_get64,  pci_config_put8,  pci_config_put16,  pci_config_put32,  pci_con-
       fig_put64,  pci_config_getb,  pci_config_getl,  pci_config_getll,  pci_config_getw,  pci_config_putb,  pci_config_putl,	 pci_config_putll,
       pci_config_putw - read or write single datum of various sizes to the PCI Local Bus Configuration space

SYNOPSIS

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

       uint8_t pci_config_get8(ddi_acc_handle_t handle, off_t offset);

       uint16_t pci_config_get16(ddi_acc_handle_t handle, off_t offset);

       uint32_t pci_config_get32(ddi_acc_handle_t handle, off_t offset);

       uint64_t pci_config_get64(ddi_acc_handle_t handle, off_t offset);

       void pci_config_put8(ddi_acc_handle_t handle, off_t offset, uint8_t value);

       void pci_config_put16(ddi_acc_handle_t handle, off_t offset, uint16_t value);

       void pci_config_put32(ddi_acc_handle_t handle, off_t offset, uint32_t value);

       void pci_config_put64(ddi_acc_handle_t handle, off_t offset, uint64_t value);

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI).

PARAMETERS

       handle	       The data access handle returned from pci_config_setup(9F).

       offset	       Byte offset from the beginning of the PCI Configuration space.

       value	       Output data.

DESCRIPTION

       These  routines	read  or write a single datum of various sizes from or to the  PCI Local Bus Configuration space.  The	pci_config_get8(),
       pci_config_get16(), pci_config_get32(), and pci_config_get64() functions read 8 bits,  16 bits, 32 bits, and 64 bits of data, respectively.
       The   pci_config_put8(),  pci_config_put16(),  pci_config_put32(),  and pci_config_put64() functions write 8 bits, 16 bits, 32 bits, and 64
       bits of data, respectively.  The  offset argument must be a multiple of the datum size.

       Since the  PCI Local Bus Configuration space is represented in little endian data format, these functions translate the	data  from  or	to
       native host format to or from little endian  format.

       pci_config_setup(9F) must be called before invoking these functions.

RETURN VALUES

       pci_config_get8(),  pci_config_get16(), pci_config_get32(), and pci_config_get64() return the value read from the  PCI Local Bus Configura-
       tion space.

CONTEXT

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

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Architecture		     |PCI Local Bus		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5), pci_config_setup(9F), pci_config_teardown(9F)

NOTES

       These functions are specific to PCI bus device drivers. For drivers using these functions, a single source to support devices with multiple
       bus versions may not be easy to maintain.

       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:

SunOS 5.10							    1 Jan 1997						       pci_config_get8(9F)