[Skiboot] [PATCH 066/110] doc: Add skeleton OPAL_PCI_EEH_FREEZE_STATUS docs

[Stewart Smith]

Fixes: https://github.com/open-power/skiboot/issues/99
Signed-off-by: Stewart Smith <stewart at linux.ibm.com>
---
 .../opal-pci-eeh-freeze-status-23.rst         | 50 +++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 doc/opal-api/opal-pci-eeh-freeze-status-23.rst

diff --git a/doc/opal-api/opal-pci-eeh-freeze-status-23.rst b/doc/opal-api/opal-pci-eeh-freeze-status-23.rst
new file mode 100644
index 000000000000..035dc14e35b6
--- /dev/null
+++ b/doc/opal-api/opal-pci-eeh-freeze-status-23.rst
@@ -0,0 +1,50 @@
+.. _OPAL_PCI_EEH_FREEZE_STATUS:
+
+OPAL_PCI_EEH_FREEZE_STATUS
+==========================
+
+.. code-block:: c
+
+   #define OPAL_PCI_EEH_FREEZE_STATUS		23
+
+   enum OpalFreezeState {
+	OPAL_EEH_STOPPED_NOT_FROZEN = 0,
+	OPAL_EEH_STOPPED_MMIO_FREEZE = 1,
+	OPAL_EEH_STOPPED_DMA_FREEZE = 2,
+	OPAL_EEH_STOPPED_MMIO_DMA_FREEZE = 3,
+	OPAL_EEH_STOPPED_RESET = 4,
+	OPAL_EEH_STOPPED_TEMP_UNAVAIL = 5,
+	OPAL_EEH_STOPPED_PERM_UNAVAIL = 6
+   };
+
+   enum OpalPciStatusToken {
+	OPAL_EEH_NO_ERROR	= 0,
+	OPAL_EEH_IOC_ERROR	= 1,
+	OPAL_EEH_PHB_ERROR	= 2,
+	OPAL_EEH_PE_ERROR	= 3,
+	OPAL_EEH_PE_MMIO_ERROR	= 4,
+	OPAL_EEH_PE_DMA_ERROR	= 5
+   };
+
+   int64_t opal_pci_eeh_freeze_status(uint64_t phb_id, uint64_t pe_number,
+                                      uint8_t *freeze_state,
+                                      uint16_t *pci_error_type,
+                                      uint64_t *phb_status);
+
+.. note:: The ``phb_status`` parameter is deprecated as
+	  of :ref:`skiboot-6.3-rc1`. Linux only ever passed in NULL,
+	  and this was safe. Supplying a pointer was previously *unsafe*.
+	  Always pass NULL.
+
+
+Returns
+-------
+
+:ref:`OPAL_PARAMETER`
+     Invalid address or PHB.
+:ref:`OPAL_UNSUPPORTED`
+     PHB does not support this operation.
+:ref:`OPAL_HARDWARE`
+     Hardware prohibited getting status, OPAL maybe marked it as broken.
+:ref:`OPAL_SUCCESS`
+     Retreived status.
-- 
2.21.0