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| Kernel Functions for Drivers | pci_config_get8(9F) |
| | 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
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#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); |
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Solaris DDI specific (Solaris DDI).
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handle
- The data access handle returned from pci_config_setup(9F).
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offset
- Byte offset from the beginning of the PCI Configuration space.
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value
- Output data.
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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.
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pci_config_get8(), pci_config_get16(), pci_config_get32(), and pci_config_get64() return the value read from the PCI Local Bus Configuration space.
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These routines can be called from user, kernel, or interrupt context.
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See attributes(5) for descriptions of the following
attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Architecture | PCI Local Bus |
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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 |
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