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. | |||
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
Line 30: | Line 34: | ||
| 6 || [[#GetStatus]] | | 6 || [[#GetStatus]] | ||
|- | |- | ||
| 7 || [[# | | 7 || [[#SetAruidForTest]] | ||
|- | |- | ||
| 8 || [[# | | 8 || [[#SetAruid]] | ||
|- | |- | ||
| 9 || [[#DumpGraphicsMemoryInfo]] | | 9 || [[#DumpGraphicsMemoryInfo]] | ||
Line 42: | Line 46: | ||
| 12 || [3.0.0+] [[#Ioctl3]] | | 12 || [3.0.0+] [[#Ioctl3]] | ||
|- | |- | ||
| 13 || [3.0.0+] [[# | | 13 || [3.0.0+] [[#SetGraphicsFirmwareMemoryMarginEnabled]] | ||
|} | |} | ||
Line 84: | Line 88: | ||
Takes no input. Returns 0x10-bytes and an output u32 ('''error_code'''). | Takes no input. Returns 0x10-bytes and an output u32 ('''error_code'''). | ||
== | == SetAruidForTest == | ||
Takes an input u64 which must [[IPC_Marshalling|match]] the user-process PID ([[Applet_Manager_services#AppletResourceUserId|AppletResourceUserId]]). Returns an output u32 ('''error_code'''). | Takes an input u64 which must [[IPC_Marshalling|match]] the user-process PID ([[Applet_Manager_services#AppletResourceUserId|AppletResourceUserId]]). Returns an output u32 ('''error_code'''). | ||
== | == SetAruid == | ||
Takes a PID-descriptor and an u64 which must [[IPC_Marshalling|match]] the user-process PID ([[Applet_Manager_services#AppletResourceUserId|AppletResourceUserId]]). Returns an output u32 ('''error_code'''). | Takes a PID-descriptor and an u64 which must [[IPC_Marshalling|match]] the user-process PID ([[Applet_Manager_services#AppletResourceUserId|AppletResourceUserId]]). Returns an output u32 ('''error_code'''). | ||
== DumpGraphicsMemoryInfo == | == DumpGraphicsMemoryInfo == | ||
No input or output | No input or output. | ||
== InitializeDevtools == | == InitializeDevtools == | ||
Takes a copy-handle and an input u32. Returns an output u32 ('''error_code'''). | Takes a copy-handle ('''transfer_memory''') and an input u32 ('''transfer_memory_size'''). Returns an output u32 ('''error_code'''). | ||
== Ioctl2 == | == Ioctl2 == | ||
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Cmdhdr_word1 is 0x100B instead of 0xC0B. | Cmdhdr_word1 is 0x100B instead of 0xC0B. | ||
== | == SetGraphicsFirmwareMemoryMarginEnabled == | ||
Takes an input u64. No output. | Takes an input u64. No output. | ||
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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 [[#Channels|/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 | |||
| Can duplicate [[#/dev/nvmap|nvmap]] handles from other processes with [[#NVMAP_IOC_FROM_ID|NVMAP_IOC_FROM_ID]]. | |||
|- | |||
| 10 | |||
| Can use [[#SetAruidForTest|SetAruidForTest]]. | |||
|- | |||
| 11 | |||
| Can use [[#SetGraphicsFirmwareMemoryMarginEnabled|SetGraphicsFirmwareMemoryMarginEnabled]]. | |||
|- | |||
| 12 | |||
| Can duplicate exported [[#/dev/nvmap|nvmap]] handles from other processes with [[#NVMAP_IOC_FROM_ID|NVMAP_IOC_FROM_ID]]. | |||
|- | |||
| 13 | |||
| | |||
|- | |||
| 14 | |||
| Can use [[#NVMAP_IOC_EXPORT_FOR_ARUID|NVMAP_IOC_EXPORT_FOR_ARUID]] and [[#NVMAP_IOC_REMOVE_EXPORT_FOR_ARUID|NVMAP_IOC_REMOVE_EXPORT_FOR_ARUID]]. | |||
|- | |||
| 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 = | ||
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}; | }; | ||
== NVHOST_IOCTL_CHANNEL_SUBMIT_EX == | === NVHOST_IOCTL_CHANNEL_SUBMIT_EX === | ||
Same as [[#NVHOST_IOCTL_CHANNEL_SUBMIT|NVHOST_IOCTL_CHANNEL_SUBMIT]]. | Same as [[#NVHOST_IOCTL_CHANNEL_SUBMIT|NVHOST_IOCTL_CHANNEL_SUBMIT]]. | ||