efi_mp.c File Reference

EFI multiprocessor API implementation. More...

#include <string.h>
#include <errno.h>
#include <ipxe/mp.h>
#include <ipxe/efi/efi.h>
#include <ipxe/efi/Protocol/MpService.h>

Go to the source code of this file.

Data Structures
struct	efi_mp_func_data
	EFI multiprocessor function call data. More...

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
	EFI_REQUEST_PROTOCOL (EFI_MP_SERVICES_PROTOCOL, &efimp)
static EFIAPI VOID	efi_mp_call (VOID *buffer)
	Call multiprocessor function on current CPU. More...
static void	efi_mp_exec_boot (mp_func_t func, void *opaque)
	Execute a multiprocessor function on the boot processor. More...
static void	efi_mp_start_all (mp_func_t func, void *opaque)
	Start a multiprocessor function on all application processors. More...
	PROVIDE_MPAPI_INLINE (efi, mp_address)
	PROVIDE_MPAPI (efi, mp_exec_boot, efi_mp_exec_boot)
	PROVIDE_MPAPI (efi, mp_start_all, efi_mp_start_all)

Variables
static EFI_MP_SERVICES_PROTOCOL *	efimp
	Multiprocessor services protocol. More...

Detailed Description

EFI multiprocessor API implementation.

Definition in file efi_mp.c.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

EFI_REQUEST_PROTOCOL()

EFI_REQUEST_PROTOCOL	(	EFI_MP_SERVICES_PROTOCOL	,
		&	efimp
	)

efi_mp_call()

static EFIAPI VOID efi_mp_call ( VOID *  buffer )

static

Call multiprocessor function on current CPU.

Parameters

buffer

Multiprocessor function call data

Definition at line 55 of file efi_mp.c.

                                                {
        struct efi_mp_func_data *data = buffer;

        /* Call multiprocessor function */
        mp_call ( data->func, data->opaque );
}

References buffer, data, and mp_call().

Referenced by efi_mp_exec_boot(), and efi_mp_start_all().

efi_mp_exec_boot()

static void efi_mp_exec_boot ( mp_func_t  func, void *  opaque  )

static

Execute a multiprocessor function on the boot processor.

Parameters

func	Multiprocessor function
opaque	Opaque data pointer

Definition at line 68 of file efi_mp.c.

                                                              {
        struct efi_mp_func_data data;

        /* Construct call data */
        data.func = mp_address ( func );
        data.opaque = mp_address ( opaque );

        /* Call multiprocesor function */
        efi_mp_call ( &data );
}

References data, efi_mp_call(), efi_mp_func_data::func, mp_address(), and efi_mp_func_data::opaque.

efi_mp_start_all()

static void efi_mp_start_all ( mp_func_t  func, void *  opaque  )

static

Start a multiprocessor function on all application processors.

Parameters

func	Multiprocessor function
opaque	Opaque data pointer

Definition at line 85 of file efi_mp.c.

                                                              {
        struct efi_mp_func_data data;
        EFI_STATUS efirc;
        int rc;

        /* Do nothing if MP services is not present */
        if ( ! efimp ) {
                DBGC ( func, "EFIMP has no multiprocessor services\n" );
                return;
        }

        /* Construct call data */
        data.func = mp_address ( func );
        data.opaque = mp_address ( opaque );

        /* Start up all application processors */
        if ( ( efirc = efimp->StartupAllAPs ( efimp, efi_mp_call, FALSE, NULL,
                                              0, &data, NULL ) ) != 0 ) {
                rc = -EEFI ( efirc );
                DBGC ( func, "EFIMP could not start APs: %s\n",
                       strerror ( rc ) );
                return;
        }
}

References data, DBGC, EEFI, efi_mp_call(), efimp, FALSE, efi_mp_func_data::func, mp_address(), NULL, efi_mp_func_data::opaque, rc, _EFI_MP_SERVICES_PROTOCOL::StartupAllAPs, and strerror().

PROVIDE_MPAPI_INLINE()

PROVIDE_MPAPI_INLINE	(	efi	,
		mp_address
	)

PROVIDE_MPAPI() [1/2]

PROVIDE_MPAPI	(	efi	,
		mp_exec_boot	,
		efi_mp_exec_boot
	)

PROVIDE_MPAPI() [2/2]

PROVIDE_MPAPI	(	efi	,
		mp_start_all	,
		efi_mp_start_all
	)

Variable Documentation

efimp

EFI_MP_SERVICES_PROTOCOL* efimp

static

Multiprocessor services protocol.

Definition at line 47 of file efi_mp.c.

Referenced by efi_mp_start_all().