Changes

Jump to navigation Jump to search
1,725 bytes added ,  20:03, 31 January 2020
no edit summary
Line 7: Line 7:     
Each service is used by:
 
Each service is used by:
* "nvdrv": regular applications
+
* "nvdrv": Applications.
* "nvdrv:a": applets
+
** [[#Permissions|Permission]] mask is [3.0.0+] 0xA82B ([1.0.0-2.3.0] 0x2B).
* "nvdrv:s": sysmodules
+
* "nvdrv:a": Applets.
* "nvdrv:t": factory titles
+
** [[#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.
    
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
Line 109: Line 113:     
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 =

Navigation menu