acpi_status
acpi_ex_pci_config_space_handler (
u32 function,
ACPI_PHYSICAL_ADDRESS address,
u32 bit_width,
u32 *value,
void *handler_context,
void *region_context)
{
acpi_status status = AE_OK;
acpi_pci_id *pci_id;
u16 pci_register;
FUNCTION_TRACE ("Ex_pci_config_space_handler");
/*
* The arguments to Acpi_os(Read|Write)Pci_cfg(Byte|Word|Dword) are:
*
* Pci_segment is the PCI bus segment range 0-31
* Pci_bus is the PCI bus number range 0-255
* Pci_device is the PCI device number range 0-31
* Pci_function is the PCI device function number
* Pci_register is the Config space register range 0-255 bytes
*
* Value - input value for write, output address for read
*
*/
pci_id = (acpi_pci_id *) region_context;
pci_register = (u16) address;
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"Pci_config %d (%d) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n",
function, bit_width, pci_id->segment, pci_id->bus, pci_id->device,
pci_id->function, pci_register));
switch (function) {
case ACPI_READ_ADR_SPACE:
*value = 0;
status = acpi_os_read_pci_configuration (pci_id, pci_register, value, bit_width);
break;
case ACPI_WRITE_ADR_SPACE:
status = acpi_os_write_pci_configuration (pci_id, pci_register, *value, bit_width);
break;
default:
status = AE_BAD_PARAMETER;
break;
}
return_ACPI_STATUS (status);
}
acpi_status
acpi_ex_pci_config_space_handler (
u32 function,
acpi_physical_address address,
u32 bit_width,
acpi_integer *value,
void *handler_context,
void *region_context)
{
acpi_status status = AE_OK;
struct acpi_pci_id *pci_id;
u16 pci_register;
ACPI_FUNCTION_TRACE ("ex_pci_config_space_handler");
/*
* The arguments to acpi_os(Read|Write)pci_configuration are:
*
* pci_segment is the PCI bus segment range 0-31
* pci_bus is the PCI bus number range 0-255
* pci_device is the PCI device number range 0-31
* pci_function is the PCI device function number
* pci_register is the Config space register range 0-255 bytes
*
* Value - input value for write, output address for read
*
*/
pci_id = (struct acpi_pci_id *) region_context;
pci_register = (u16) (u32) address;
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"pci_config %d (%d) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n",
function, bit_width, pci_id->segment, pci_id->bus, pci_id->device,
pci_id->function, pci_register));
switch (function) {
case ACPI_READ:
*value = 0;
status = acpi_os_read_pci_configuration (pci_id, pci_register,
value, bit_width);
break;
case ACPI_WRITE:
status = acpi_os_write_pci_configuration (pci_id, pci_register,
*value, bit_width);
break;
default:
status = AE_BAD_PARAMETER;
break;
}
return_ACPI_STATUS (status);
}
