70 lines
1.5 KiB
ReStructuredText
70 lines
1.5 KiB
ReStructuredText
.. _OPAL_PCI_GET_PBCQ_TUNNEL_BAR:
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OPAL_PCI_GET_PBCQ_TUNNEL_BAR
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============================
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.. code-block:: c
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#define OPAL_PCI_GET_PBCQ_TUNNEL_BAR 164
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int64_t opal_pci_get_pbcq_tunnel_bar(uint64_t phb_id, uint64_t *addr);
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The host calls this function to read the address out of the PBCQ Tunnel
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Bar register.
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Parameters
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----------
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``phb_id``
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The value from the PHB node ibm,opal-phbid property for the device.
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``addr``
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A pointer to where the address stored in the PBCQ Tunnel Bar register
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will be copied.
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Return Values
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-------------
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:ref:`OPAL_SUCCESS`
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Operation was successful
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:ref:`OPAL_PARAMETER`
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Invalid PHB or addr parameter
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:ref:`OPAL_UNSUPPORTED`
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Not supported by hardware
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.. _OPAL_PCI_SET_PBCQ_TUNNEL_BAR:
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OPAL_PCI_SET_PBCQ_TUNNEL_BAR
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============================
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.. code-block:: c
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#define OPAL_PCI_SET_PBCQ_TUNNEL_BAR 165
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int64_t opal_pci_set_pbcq_tunnel_bar(uint64_t phb_id, uint64_t addr);
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The host calls this function to set the PBCQ Tunnel Bar register.
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Parameters
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----------
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`phb_id`
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The value from the PHB node ibm,opal-phbid property for the device.
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`addr`
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The value of the address chosen for the PBCQ Tunnel Bar register.
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If the address is 0, then the PBCQ Tunnel Bar register will be reset.
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It the address is non-zero, then the PBCQ Tunnel Bar register will be
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set with ::
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Bit[0:42] Bit[8:50] of the address
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Return Values
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-------------
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:ref:`OPAL_SUCCESS`
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Operation was successful
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:ref:`OPAL_PARAMETER`
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Invalid PHB or addr parameter
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:ref:`OPAL_UNSUPPORTED`
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Not supported by hardware
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