[Skiboot] [PATCH v10 11/11] skiboot: Add documentation for IMC opal call

[Madhavan Srinivasan]

From: Anju T Sudhakar <anju at linux.vnet.ibm.com>

Add documentation for new OPAL Call APIs added for
In Memory Collection(IMC) infrastructure. Three new
OPAL Call APIs are added and they are
	opal_imc_counters_init(int Domain, u64 address)
	opal_imc_counters_start(int Domain)
	opal_imc_counters_stop(int Domain)

Document details the input parameters and return values.

Signed-off-by: Anju T Sudhakar <anju at linux.vnet.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy at linux.vnet.ibm.com>
---
 doc/opal-api/opal-imc-counters.rst | 60 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 doc/opal-api/opal-imc-counters.rst

diff --git a/doc/opal-api/opal-imc-counters.rst b/doc/opal-api/opal-imc-counters.rst
new file mode 100644
index 000000000000..63830a7b52cd
--- /dev/null
+++ b/doc/opal-api/opal-imc-counters.rst
@@ -0,0 +1,60 @@
+OPAL_IMC_COUNTERS_INIT
+==============================
+OPAL call interface to initialize In-memory collection
+infrastructure. This call support initialization of only
+Core IMC type for now.
+
+Parameters
+----------
+``uint32_t type``
+ This parameter specifies the imc counter domain.
+ The value should be 'OPAL_IMC_COUNTERS_CORE'
+
+``uint64_t addr``
+  This parameter must have a non-zero value.
+  This value must be a physical address of the core.
+
+
+Returns
+-------
+OPAL_PARAMETER - In case of  unsupported ``type``
+OPAL_HARDWARE  - If xscom_write fails.
+OPAL_SUCCESS   - When core counters are succesfully initialized.
+
+
+OPAL_IMC_COUNTERS_START
+============================
+OPAL call interface for starting the In-Memory Collection
+counters for a specified domain (NEST/CORE).
+
+Parameters
+----------
+``uint32_t type``
+ This parameter specifies the imc counter domain.
+ The value can be either 'OPAL_IMC_COUNTERS_NEST'
+ or 'OPAL_IMC_COUNTERS_CORE'
+
+Returns
+-------
+OPAL_PARAMETER - In case of  Unsupported ``type``
+OPAL_HARDWARE  - If xscom_write fails.
+OPAL_SUCCESS   - On successful execution of the operation for the given ``type``.
+
+
+OPAL_IMC_COUNTERS_STOP
+===========================
+OPAL call interface for stoping In-Memory
+Collection counters for a specified domain (NEST/CORE).
+
+Parameters
+----------
+``uint32_t type``
+ This parameter specifies the imc counter domain.
+ The value can be either 'OPAL_IMC_COUNTERS_NEST'
+ or 'OPAL_IMC_COUNTERS_CORE'
+
+Returns
+-------
+OPAL_PARAMETER - In case of  Unsupported ``type``
+OPAL_HARDWARE  - If xscom_write fails.
+OPAL_SUCCESS   - On successful execution of the operation for the given ``type``.
-- 
2.7.4