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IPMI: Add the document description of ipmi_get_smi_info

Add the document description about how to use ipmi_get_smi_info.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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commit 37bf501bdda1d5d6ea73ce29d4b00d291b6f3811 1 parent 16f4232
@yakuizhao yakuizhao authored lenb committed
Showing with 27 additions and 0 deletions.
  1. +27 −0 Documentation/IPMI.txt
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27 Documentation/IPMI.txt
@@ -533,6 +533,33 @@ completion during sending a panic event.
Other Pieces
------------
+Get the detailed info related with the IPMI device
+--------------------------------------------------
+
+Some users need more detailed information about a device, like where
+the address came from or the raw base device for the IPMI interface.
+You can use the IPMI smi_watcher to catch the IPMI interfaces as they
+come or go, and to grab the information, you can use the function
+ipmi_get_smi_info(), which returns the following structure:
+
+struct ipmi_smi_info {
+ enum ipmi_addr_src addr_src;
+ struct device *dev;
+ union {
+ struct {
+ void *acpi_handle;
+ } acpi_info;
+ } addr_info;
+};
+
+Currently special info for only for SI_ACPI address sources is
+returned. Others may be added as necessary.
+
+Note that the dev pointer is included in the above structure, and
+assuming ipmi_smi_get_info returns success, you must call put_device
+on the dev pointer.
+
+
Watchdog
--------
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