HIPC: Difference between revisions

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@@ Line 15: / Line 15: @@
 | 0 || 31-28 || Number of buf W desciptors (each: 3 words), never observed.
 |-
-| 1 || 9-0 || Total word count (in u32's).
+| 1 || 9-0 || Raw data size (in u32's).
 |-
 | 1 || 13-10 || Flags for buf C descriptor.
@@ Line 31: / Line 31: @@
 | ... || || Type W descriptors, each one 3 words.
 |-
-| ... || || Padding
+| ... || || Raw data (including any padding).
-|-
-| ... || || Raw data
 |-
 | ... || || Buf C descriptors, each one 2 words.
@@ Line 49: / Line 47: @@
 |-
 | 0 || 8-5 || Number of handles to move
+|-
+| ... || || 8-byte PID if enabled
 |-
 | ... || || Handles to copy
@@ Line 113: / Line 113: @@
 == Raw data portion ==
-This is an array of u64's. It's always aligned to 16 so sometimes there is padding words before it.
+This is an array of u32's, but individual parameters are generally stored as u64's.
 {| class="wikitable" border="1"
 ! Word || Description
 |-
-| ... || Pid is written here if enabled.
+| ... || Padding to align to 16
+|-
+| ... || Domain header padded to 16 if required
+|-
+| +0 || Magic ("SFCI" for requests, "SFCO" for responses) as u64
 |-
-| +0 || Magic ("SFCI" for requests, "SFCO" for responses)
+| +2 || Cmd id as u64
 |-
-| +1 || Cmd id
+| ... || Input parameters
 |-
-| ... || Rest of raw data.
+| ... || Any u16 buffer sizes packed and aligned to 2 bytes
 |}
@@ Line 186: / Line 190: @@
 == Control ==
-When type == 5 you are talking to kernel.
+When type == 5 you are talking to the IPC manager.
 {| class="wikitable" border="1"