Tribblix: manual page: pci_config

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_config_put64, - 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

illumos DDI specific (illumos DDI). The pci_config_getb(),
pci_config_getl(), pci_config_getll(), pci_config_getw(),
pci_config_putb(), pci_config_putl(), pci_config_putll(), and
pci_config_putw() functions are obsolete. The pci_config_get8()
function replaces pci_config_getb(). The pci_config_get32() function
replaces pci_config_getl(). The pci_config_get64() function replaces
pci_config_getll(). The pci_config_get16() function replaces
pci_config_getw(). The pci_config_put8() function replaces
pci_config_putb(). The pci_config_put32() function replaces
pci_config_putl(). The pci_config_put64() function replaces
pci_config_putll(). The pci_config_put16() function replaces
pci_config_putw().

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 th 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