HIPC - Revision history

Yellows8: /* TIPC */

2026-01-08T22:23:50Z

TIPC

← Older revision		Revision as of 01:23, 9 January 2026
Line 610:		Line 610:

	= TIPC =		= TIPC =
	TIPC (Tiny IPC) is a simpler protocol than CMIF. It has no concept of domains, so it cannot support multiple objects per session. It is only used in the Service Manager.		TIPC (Tiny IPC) is a simpler protocol than CMIF. It has no concept of domains, so it cannot support multiple objects per session. It is only used by the [[Services_API\|Service Manager]] and [[PGL_services\|pgl]].

	== MessageType ==		== MessageType ==

Yannik: Document ReceiveListOffset field of HIPC header

2025-06-12T14:00:24Z

Document ReceiveListOffset field of HIPC header

← Older revision		Revision as of 18:00, 12 June 2025
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	\| ReceiveListCount		\| ReceiveListCount
	\|-		\|-
	\| 14-30		\| 14-19
	\| Reserved		\| Reserved
			\|-
			\| 20-30
			\| ReceiveListOffset
	\|-		\|-
	\| 31		\| 31

Yannik: Clarify RawCount

2025-06-06T14:46:18Z

Clarify RawCount

← Older revision		Revision as of 18:46, 6 June 2025
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	\|-		\|-
	\| 0-9		\| 0-9
	\| RawCount		\| RawCount (number of 32-bit words in RawData)
	\|-		\|-
	\| 10-13		\| 10-13

Yellows8 at 06:19, 3 June 2025

2025-06-03T04:19:57Z

← Older revision		Revision as of 08:19, 3 June 2025
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	* [[#TIPC\|TIPC]]: Tiny IPC. Simple and lightweight protocol.		* [[#TIPC\|TIPC]]: Tiny IPC. Simple and lightweight protocol.

	[[#CMIF\|CMIF]] is universally used for virtually almost all Switch services. [[#TIPC\|TIPC]] is only used by the Service Manager.		[[#CMIF\|CMIF]] is universally used for virtually almost all Switch services. [[#TIPC\|TIPC]] is only used by the [[Services_API\|Service Manager]] and [[PGL_services\|pgl]].

	= HIPC =		= HIPC =

Ootulp at 05:48, 3 June 2025

2025-06-03T03:48:25Z

← Older revision		Revision as of 07:48, 3 June 2025
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	HIPC (Horizon Inter-Process Communication) is a custom IPC implementation tailored for the Horizon OS.		HIPC (Horizon Inter-Process Communication) is a custom IPC implementation tailored for the Horizon OS.

			There are two protocols over [[#HIPC\|HIPC]]:

			* [[#CMIF\|CMIF]]: Command Interface (?). Supports session management with domains and dynamic multiplexing of services.
			* [[#TIPC\|TIPC]]: Tiny IPC. Simple and lightweight protocol.

			[[#CMIF\|CMIF]] is universally used for virtually almost all Switch services. [[#TIPC\|TIPC]] is only used by the Service Manager.

	= HIPC =		= HIPC =

Ootulp at 05:33, 3 June 2025

2025-06-03T03:33:08Z

← Older revision		Revision as of 07:33, 3 June 2025
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	HIPC (Horizon Inter-Process Communication) is a custom IPC implementation tailored for the Horizon OS.		HIPC (Horizon Inter-Process Communication) is a custom IPC implementation tailored for the Horizon OS.

	= ~~Structure~~ =		= HIPC =
	This is a buffer located in the [[Thread Local Region]].		This is a buffer located in the [[Thread Local Region]].

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	Depending on the protocol, either [[#CMIF\|CMIF]] or [[#TIPC\|TIPC]] data is used here.		Depending on the protocol, either [[#CMIF\|CMIF]] or [[#TIPC\|TIPC]] data is used here.

	= CMIF ~~Structure~~ =		= CMIF =
	== Raw Data ==		== Raw Data ==
	[[File:Ipc msg buffer type a example.png\|thumb\|An example of an IPC message with a type 0xA (OutPointer) buffer in it. Red is headers/descriptors, yellow is padding, and blue is data/buffer lengths. Note that the size of the u16 array for type 0xA lengths is padded to fill up a whole word.]]		[[File:Ipc msg buffer type a example.png\|thumb\|An example of an IPC message with a type 0xA (OutPointer) buffer in it. Red is headers/descriptors, yellow is padding, and blue is data/buffer lengths. Note that the size of the u16 array for type 0xA lengths is padded to fill up a whole word.]]
Line 598:		Line 598:
	\| HipcMove		\| HipcMove
	\|}		\|}

			= TIPC =
			TIPC (Tiny IPC) is a simpler protocol than CMIF. It has no concept of domains, so it cannot support multiple objects per session. It is only used in the Service Manager.

			== MessageType ==
			In TIPC, the request ID is stored in the lowest 16 bits of [[#Header0Tag\|Header0Tag]].

			== RawData ==
			In TIPC, [[#RawData\|RawData]] field directly contains the payload.

	= Server =		= Server =

Ootulp: /* RawData */

2025-06-03T03:25:56Z

RawData

← Older revision		Revision as of 07:25, 3 June 2025
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	== RawData ==		== RawData ==
			Depending on the protocol, either [[#CMIF\|CMIF]] or [[#TIPC\|TIPC]] data is used here.

	= CMIF Structure =		= CMIF Structure =

Ootulp: Split up HIPC and CMIF

2025-06-03T03:23:48Z

Split up HIPC and CMIF

Show changes

Hexkyz at 20:06, 13 May 2025

2025-05-13T18:06:07Z

Show changes

\exverge: /* Header1Tag */ Fix bits

2024-08-10T14:58:41Z

Header1Tag: Fix bits

← Older revision		Revision as of 18:58, 10 August 2024
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	\| ReceiveListCount		\| ReceiveListCount
	\|-		\|-
	\| 13-30		\| 14-30
	\| Reserved		\| Reserved
	\|-		\|-