pci_config_getw(9F)

NAME | SYNOPSIS | INTERFACE LEVEL | PARAMETERS | DESCRIPTION | RETURN VALUES | CONTEXT | ATTRIBUTES | SEE ALSO | NOTES

NAME

pci_config_get8, pci_config_get16, pci_config_get32, pci_config_get64, pci_config_put8, pci_config_put16, pci_config_put32, pci_config_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 Configuration 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:

Previous Name	New Name
pci_config_getb	pci_config_get8
pci_config_getw	pci_config_get16
pci_config_getl	pci_config_get32
pci_config_getll	pci_config_get64
pci_config_putb	pci_config_put8
pci_config_putw	pci_config_put16
pci_config_putl	pci_config_put32
pci_config_putll	pci_config_put64

SunOS 5.8  Last Revised 1 Jan 1997

NAME | SYNOPSIS | INTERFACE LEVEL | PARAMETERS | DESCRIPTION | RETURN VALUES | CONTEXT | ATTRIBUTES | SEE ALSO | NOTES