88 lines
1.9 KiB
ReStructuredText
88 lines
1.9 KiB
ReStructuredText
.. _OPAL_XSCOM_READ:
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OPAL_XSCOM_READ
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===============
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.. code-block:: c
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#define OPAL_XSCOM_READ 65
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int xscom_read(uint32_t partid, uint64_t pcb_addr, uint64_t *val);
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This low level call will read XSCOM values directly.
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They should only be used by low level manufacturing/debug tools.
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"Normal" host OS kernel code should not know about XSCOM.
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This is also needed by HBRT/`opal-prd`.
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Returns
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-------
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:ref:`OPAL_SUCCESS`
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Success!
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:ref:`OPAL_HARDWARE`
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if operation failed
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:ref:`OPAL_WRONG_STATE`
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if CPU is asleep
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:ref:`OPAL_XSCOM_BUSY`
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Alias for :ref:`OPAL_BUSY`.
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:ref:`OPAL_XSCOM_CHIPLET_OFF`
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Alias for :ref:`OPAL_WRONG_STATE`
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:ref:`OPAL_XSCOM_PARTIAL_GOOD`
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XSCOM Partial Good
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:ref:`OPAL_XSCOM_ADDR_ERROR`
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XSCOM Address Error
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:ref:`OPAL_XSCOM_CLOCK_ERROR`
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XSCOM Clock Error
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:ref:`OPAL_XSCOM_PARITY_ERROR`
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XSCOM Parity Error
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:ref:`OPAL_XSCOM_TIMEOUT`
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XSCOM Timeout
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:ref:`OPAL_XSCOM_CTR_OFFLINED`
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XSCOM Controller Offlined due to too many errors.
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.. _OPAL_XSCOM_WRITE:
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OPAL_XSCOM_WRITE
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================
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.. code-block:: c
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#define OPAL_XSCOM_WRITE 66
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int xscom_write(uint32_t partid, uint64_t pcb_addr, uint64_t val);
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This low level call will write an XSCOM value directly.
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They should only be used by low level manufacturing/debug tools.
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"Normal" host OS kernel code should not know about XSCOM.
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This is also needed by HBRT/`opal-prd`.
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Returns
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-------
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:ref:`OPAL_SUCCESS`
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Success!
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:ref:`OPAL_HARDWARE`
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if operation failed
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:ref:`OPAL_WRONG_STATE`
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if CPU is asleep
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:ref:`OPAL_XSCOM_BUSY`
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Alias for :ref:`OPAL_BUSY`.
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:ref:`OPAL_XSCOM_CHIPLET_OFF`
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Alias for :ref:`OPAL_WRONG_STATE`
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:ref:`OPAL_XSCOM_PARTIAL_GOOD`
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XSCOM Partial Good
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:ref:`OPAL_XSCOM_ADDR_ERROR`
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XSCOM Address Error
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:ref:`OPAL_XSCOM_CLOCK_ERROR`
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XSCOM Clock Error
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:ref:`OPAL_XSCOM_PARITY_ERROR`
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XSCOM Parity Error
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:ref:`OPAL_XSCOM_TIMEOUT`
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XSCOM Timeout
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:ref:`OPAL_XSCOM_CTR_OFFLINED`
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XSCOM Controller Offlined due to too many errors.
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