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.. _OPAL_PHB_SET_OPTION:
OPAL_PHB_SET_OPTION
===================
.. code-block:: c
#define OPAL_PHB_SET_OPTION 179
int64_t opal_phb_set_option(uint64_t phb_id, uint64_t opt, uint64_t setting);
This call translate an PHB option to a PHB flag for specific PHB model and
writes it to the hardware.
Supported options are:
.. code-block:: c
enum OpalPhbOption {
OPAL_PHB_OPTION_TVE1_4GB = 0x1,
OPAL_PHB_OPTION_MMIO_EEH_DISABLE = 0x2
};
OPAL_PHB_OPTION_TVE1_4GB: If set, uses TVE#1 for DMA access above 4GB; allowed setting 0 or 1.
OPAL_PHB_OPTION_MMIO_EEH_DISABLE: Disables EEH for all MMIO commands; allowed setting 0 or 1.
Returns
-------
:ref:`OPAL_SUCCESS`
Success
:ref:`OPAL_UNSUPPORTED`
if either the call or the option is not supported
:ref:`OPAL_PARAMETER`
if PHB is unknown or a new setting is out of range
.. _OPAL_PHB_GET_OPTION:
OPAL_PHB_GET_OPTION
===================
.. code-block:: c
#define OPAL_PHB_GET_OPTION 180
int64_t opal_phb_get_option(uint64_t phb_id, uint64_t opt, uint64_t *setting);
This call reads the hardware specific PHB flag and translates to a PHB option.
For the list of supported options refer to OPAL_PHB_SET_OPTION above.
Returns
-------
:ref:`OPAL_SUCCESS`
Success
:ref:`OPAL_UNSUPPORTED`
if either the call or the option is not supported
:ref:`OPAL_PARAMETER`
if PHB is unknown or a new setting is out of range or no memory
allocated for the return value
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