Ejemplo n.º 1
0
/*******************************************************************************
 *
 * FUNCTION:    acpi_decode_pld_buffer
 *
 * PARAMETERS:  in_buffer           - Buffer returned by _PLD method
 *              length              - Length of the in_buffer
 *              return_buffer       - Where the decode buffer is returned
 *
 * RETURN:      Status and the decoded _PLD buffer. User must deallocate
 *              the buffer via ACPI_FREE.
 *
 * DESCRIPTION: Decode the bit-packed buffer returned by the _PLD method into
 *              a local struct that is much more useful to an ACPI driver.
 *
 ******************************************************************************/
acpi_status
acpi_decode_pld_buffer(u8 *in_buffer,
		       acpi_size length, struct acpi_pld_info **return_buffer)
{
	struct acpi_pld_info *pld_info;
	u32 *buffer = ACPI_CAST_PTR(u32, in_buffer);
	u32 dword;

	/* Parameter validation */

	if (!in_buffer || !return_buffer
	    || (length < ACPI_PLD_REV1_BUFFER_SIZE)) {
		return (AE_BAD_PARAMETER);
	}

	pld_info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pld_info));
	if (!pld_info) {
		return (AE_NO_MEMORY);
	}

	/* First 32-bit DWord */

	ACPI_MOVE_32_TO_32(&dword, &buffer[0]);
	pld_info->revision = ACPI_PLD_GET_REVISION(&dword);
	pld_info->ignore_color = ACPI_PLD_GET_IGNORE_COLOR(&dword);
	pld_info->red = ACPI_PLD_GET_RED(&dword);
	pld_info->green = ACPI_PLD_GET_GREEN(&dword);
	pld_info->blue = ACPI_PLD_GET_BLUE(&dword);

	/* Second 32-bit DWord */

	ACPI_MOVE_32_TO_32(&dword, &buffer[1]);
	pld_info->width = ACPI_PLD_GET_WIDTH(&dword);
	pld_info->height = ACPI_PLD_GET_HEIGHT(&dword);

	/* Third 32-bit DWord */

	ACPI_MOVE_32_TO_32(&dword, &buffer[2]);
	pld_info->user_visible = ACPI_PLD_GET_USER_VISIBLE(&dword);
	pld_info->dock = ACPI_PLD_GET_DOCK(&dword);
	pld_info->lid = ACPI_PLD_GET_LID(&dword);
	pld_info->panel = ACPI_PLD_GET_PANEL(&dword);
	pld_info->vertical_position = ACPI_PLD_GET_VERTICAL(&dword);
	pld_info->horizontal_position = ACPI_PLD_GET_HORIZONTAL(&dword);
	pld_info->shape = ACPI_PLD_GET_SHAPE(&dword);
	pld_info->group_orientation = ACPI_PLD_GET_ORIENTATION(&dword);
	pld_info->group_token = ACPI_PLD_GET_TOKEN(&dword);
	pld_info->group_position = ACPI_PLD_GET_POSITION(&dword);
	pld_info->bay = ACPI_PLD_GET_BAY(&dword);

	/* Fourth 32-bit DWord */

	ACPI_MOVE_32_TO_32(&dword, &buffer[3]);
	pld_info->ejectable = ACPI_PLD_GET_EJECTABLE(&dword);
	pld_info->ospm_eject_required = ACPI_PLD_GET_OSPM_EJECT(&dword);
	pld_info->cabinet_number = ACPI_PLD_GET_CABINET(&dword);
	pld_info->card_cage_number = ACPI_PLD_GET_CARD_CAGE(&dword);
	pld_info->reference = ACPI_PLD_GET_REFERENCE(&dword);
	pld_info->rotation = ACPI_PLD_GET_ROTATION(&dword);
	pld_info->order = ACPI_PLD_GET_ORDER(&dword);

	if (length >= ACPI_PLD_REV2_BUFFER_SIZE) {

		/* Fifth 32-bit DWord (Revision 2 of _PLD) */

		ACPI_MOVE_32_TO_32(&dword, &buffer[4]);
		pld_info->vertical_offset = ACPI_PLD_GET_VERT_OFFSET(&dword);
		pld_info->horizontal_offset = ACPI_PLD_GET_HORIZ_OFFSET(&dword);
	}

	*return_buffer = pld_info;
	return (AE_OK);
}
Ejemplo n.º 2
0
ACPI_STATUS
AcpiDecodePldBuffer (
    UINT8                   *InBuffer,
    ACPI_SIZE               Length,
    ACPI_PLD_INFO           **ReturnBuffer)
{
    ACPI_PLD_INFO           *PldInfo;
    UINT32                  *Buffer = ACPI_CAST_PTR (UINT32, InBuffer);
    UINT32                  Dword;


    /* Parameter validation */

    if (!InBuffer || !ReturnBuffer || (Length < ACPI_PLD_REV1_BUFFER_SIZE))
    {
        return (AE_BAD_PARAMETER);
    }

    PldInfo = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_PLD_INFO));
    if (!PldInfo)
    {
        return (AE_NO_MEMORY);
    }

    /* First 32-bit DWord */

    ACPI_MOVE_32_TO_32 (&Dword, &Buffer[0]);
    PldInfo->Revision =             ACPI_PLD_GET_REVISION (&Dword);
    PldInfo->IgnoreColor =          ACPI_PLD_GET_IGNORE_COLOR (&Dword);
    PldInfo->Red =                  ACPI_PLD_GET_RED (&Dword);
    PldInfo->Green =                ACPI_PLD_GET_GREEN (&Dword);
    PldInfo->Blue =                 ACPI_PLD_GET_BLUE (&Dword);

    /* Second 32-bit DWord */

    ACPI_MOVE_32_TO_32 (&Dword, &Buffer[1]);
    PldInfo->Width =                ACPI_PLD_GET_WIDTH (&Dword);
    PldInfo->Height =               ACPI_PLD_GET_HEIGHT(&Dword);

    /* Third 32-bit DWord */

    ACPI_MOVE_32_TO_32 (&Dword, &Buffer[2]);
    PldInfo->UserVisible =          ACPI_PLD_GET_USER_VISIBLE (&Dword);
    PldInfo->Dock =                 ACPI_PLD_GET_DOCK (&Dword);
    PldInfo->Lid =                  ACPI_PLD_GET_LID (&Dword);
    PldInfo->Panel =                ACPI_PLD_GET_PANEL (&Dword);
    PldInfo->VerticalPosition =     ACPI_PLD_GET_VERTICAL (&Dword);
    PldInfo->HorizontalPosition =   ACPI_PLD_GET_HORIZONTAL (&Dword);
    PldInfo->Shape =                ACPI_PLD_GET_SHAPE (&Dword);
    PldInfo->GroupOrientation =     ACPI_PLD_GET_ORIENTATION (&Dword);
    PldInfo->GroupToken =           ACPI_PLD_GET_TOKEN (&Dword);
    PldInfo->GroupPosition =        ACPI_PLD_GET_POSITION (&Dword);
    PldInfo->Bay =                  ACPI_PLD_GET_BAY (&Dword);

    /* Fourth 32-bit DWord */

    ACPI_MOVE_32_TO_32 (&Dword, &Buffer[3]);
    PldInfo->Ejectable =            ACPI_PLD_GET_EJECTABLE (&Dword);
    PldInfo->OspmEjectRequired =    ACPI_PLD_GET_OSPM_EJECT (&Dword);
    PldInfo->CabinetNumber =        ACPI_PLD_GET_CABINET (&Dword);
    PldInfo->CardCageNumber =       ACPI_PLD_GET_CARD_CAGE (&Dword);
    PldInfo->Reference =            ACPI_PLD_GET_REFERENCE (&Dword);
    PldInfo->Rotation =             ACPI_PLD_GET_ROTATION (&Dword);
    PldInfo->Order =                ACPI_PLD_GET_ORDER (&Dword);

    if (Length >= ACPI_PLD_REV2_BUFFER_SIZE)
    {
        /* Fifth 32-bit DWord (Revision 2 of _PLD) */

        ACPI_MOVE_32_TO_32 (&Dword, &Buffer[4]);
        PldInfo->VerticalOffset =       ACPI_PLD_GET_VERT_OFFSET (&Dword);
        PldInfo->HorizontalOffset =     ACPI_PLD_GET_HORIZ_OFFSET (&Dword);
    }

    *ReturnBuffer = PldInfo;
    return (AE_OK);
}