NV services: Difference between revisions
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Each service is used by: | Each service is used by: | ||
* "nvdrv": | * "nvdrv": Applications. | ||
* "nvdrv:a": | ** [[#Permissions|Permission]] mask is [3.0.0+] 0xA82B ([1.0.0-2.3.0] 0x2B). | ||
* "nvdrv:s": | * "nvdrv:a": Applets. | ||
* "nvdrv:t": | ** [[#Permissions|Permission]] mask is [3.0.0+] 0x10A9 ([1.0.0-2.3.0] 0xA9). | ||
* "nvdrv:s": Sysmodules. | |||
** [[#Permissions|Permission]] mask is [3.0.0+] 0x439E ([1.0.0-2.3.0] 0x39E). | |||
* "nvdrv:t": Factory. | |||
** [[#Permissions|Permission]] mask is 0xFFFFFFFF. | |||
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Official user-processes starting with 3.0.0 now use this at the end of nvdrv service init with value 0x1. | Official user-processes starting with 3.0.0 now use this at the end of nvdrv service init with value 0x1. | ||
= Permissions = | |||
Each nvdrv service is initialized with a bitfield that controls access to nodes and other operations. | |||
{| class="wikitable" border="1" | |||
! Bits | |||
! Description | |||
|- | |||
| 0 | |||
| Can access [[#/dev/nvhost-gpu|/dev/nvhost-gpu]], [[#/dev/nvhost-ctrl-gpu|/dev/nvhost-ctrl-gpu]] and [[#/dev/nvhost-as-gpu|/dev/nvhost-as-gpu]]. | |||
|- | |||
| 1 | |||
| Can access [[#/dev/nvhost-dbg-gpu|/dev/nvhost-dbg-gpu]] and [[#/dev/nvhost-prof-gpu|/dev/nvhost-prof-gpu]]. | |||
|- | |||
| 2 | |||
| Can access [[#/dev/nvsched-ctrl|/dev/nvsched-ctrl]]. | |||
|- | |||
| 3 | |||
| Can access [[#Channels|/dev/nvhost-vic]]. | |||
|- | |||
| 4 | |||
| Can access [[#Channels|/dev/nvhost-msenc]]. | |||
|- | |||
| 5 | |||
| Can access [[#Channels|/dev/nvhost-nvdec]]. | |||
|- | |||
| 6 | |||
| | |||
|- | |||
| 7 | |||
| Can access [[#Channels|/dev/nvhost-nvjpg]]. | |||
|- | |||
| 8 | |||
| Can access [[#Channels|/dev/nvhost-display]], [[#/dev/nvcec-ctrl|/dev/nvcec-ctrl]], [[#/dev/nvhdcp_up-ctrl|/dev/nvhdcp_up-ctrl]], [[#/dev/nvdisp-ctrl|/dev/nvdisp-ctrl]], [[#/dev/nvdisp-disp0, /dev/nvdisp-disp1|/dev/nvdisp-disp0]], [[#/dev/nvdisp-disp0, /dev/nvdisp-disp1|/dev/nvdisp-disp1]], [[#/dev/nvdcutil-disp0, /dev/nvdcutil-disp1|/dev/nvdcutil-disp0]] and [[#/dev/nvdcutil-disp0, /dev/nvdcutil-disp1|/dev/nvdcutil-disp1]]. | |||
|- | |||
| 9 | |||
| | |||
|- | |||
| 10 | |||
| | |||
|- | |||
| 11 | |||
| Can use [[#FinishInitialize|FinishInitialize]]. | |||
|- | |||
| 12 | |||
| | |||
|- | |||
| 13 | |||
| | |||
|- | |||
| 14 | |||
| | |||
|- | |||
| 15 | |||
| | |||
|- | |||
| 16-31 | |||
| Unused. | |||
|} | |||
Nodes [[#/dev/nvmap|/dev/nvmap]], [[#/dev/nvhost-ctrl|/dev/nvhost-ctrl]] and [[#/dev/nverpt-ctrl|/dev/nverpt-ctrl]] are always accessible. | |||
= Ioctls = | = Ioctls = | ||