NV services: Difference between revisions

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== /dev/nvhost-ctrl ==
== /dev/nvhost-ctrl ==
{| class="wikitable" border="1"
{| class="wikitable" border="1"
! Value || Size || Description || Notes
! Value || Direction || Size || Description || Notes
|-
|-
| 0xC0080014 || 8 || NVHOST_IOCTL_CTRL_SYNCPT_READ ||
| 0xC0080014 || Inout || 8 || NVHOST_IOCTL_CTRL_SYNCPT_READ ||
|-
|-
| 0x40040015 || 4 || NVHOST_IOCTL_CTRL_SYNCPT_INCR ||
| 0x40040015 || In || 4 || NVHOST_IOCTL_CTRL_SYNCPT_INCR ||
|-
|-
| 0xC00C0016 || 12 || NVHOST_IOCTL_CTRL_SYNCPT_WAIT ||
| 0xC00C0016 || Inout || 12 || NVHOST_IOCTL_CTRL_SYNCPT_WAIT ||
|-
|-
| 0x40080017 || 8 || NVHOST_IOCTL_CTRL_MODULE_MUTEX ||
| 0x40080017 || In || 8 || NVHOST_IOCTL_CTRL_MODULE_MUTEX ||
|-
|-
| 0xC0180018 || 24 || NVHOST32_IOCTL_CTRL_MODULE_REGRDWR ||
| 0xC0180018 || Inout || 24 || NVHOST32_IOCTL_CTRL_MODULE_REGRDWR ||
|-
|-
| 0xC0100019 || 16 || NVHOST_IOCTL_CTRL_SYNCPT_WAITEX ||
| 0xC0100019 || Inout || 16 || NVHOST_IOCTL_CTRL_SYNCPT_WAITEX ||
|-
|-
| 0xC008001A || 8 || NVHOST_IOCTL_CTRL_SYNCPT_READ_MAX ||
| 0xC008001A || Inout || 8 || NVHOST_IOCTL_CTRL_SYNCPT_READ_MAX ||
|-
|-
| 0xC004001C || 4 || ||
| 0xC004001C || Inout || 4 || ||
|-
|-
| 0xC010001D || 16 || || NvRmSyncWaitEvent (wait on event?)
| 0xC010001D || Inout || 16 || || NvRmSyncWaitEvent (wait on event?)
|-
|-
| 0xC010001E || 16 || || NvRmSyncWaitEvent (wait on event?)
| 0xC010001E || Inout || 16 || || NvRmSyncWaitEvent (wait on event?)
|-
|-
| 0xC004001F || 4 || || NvRmSyncWaitEvent (signal event?)
| 0xC004001F || Inout || 4 || || NvRmSyncWaitEvent (signal event?)
|-
|-
| 0xC0040020 || 4 || || NvRmSyncWaitEvent (signal event?)
| 0xC0040020 || Inout || 4 || || NvRmSyncWaitEvent (signal event?)
|-
|-
| 0x40080021 || 8 || cancel_wait_event || Cancels all events
| 0x40080021 || In || 8 || cancel_wait_event || Cancels all events
|}
|}


== /dev/nvmap ==
== /dev/nvmap ==
{| class="wikitable" border="1"
{| class="wikitable" border="1"
! Value || Description || Notes
! Value || Direction || Size || Description || Notes
|-
|-
| 0xC0080101 || NVMAP_IOC_CREATE ||
| 0xC0080101 || Inout || 8 || NVMAP_IOC_CREATE ||
|-
|-
| 0x00000102 || NVMAP_IOC_CLAIM || Returns NotSupported
| 0x00000102 || - || 0 || NVMAP_IOC_CLAIM || Returns NotSupported
|-
|-
| 0xC0080103 || NVMAP_IOC_FROM_ID ||
| 0xC0080103 || Inout || 8 || NVMAP_IOC_FROM_ID ||
|-
|-
| 0xC0200104 || NVMAP_IOC_ALLOC ||
| 0xC0200104 || Inout || 32 || NVMAP_IOC_ALLOC ||
|-
|-
| 0xC0180105 || NVMAP_IOC_FREE ||
| 0xC0180105 || Inout || 24 || NVMAP_IOC_FREE ||
|-
|-
| 0xC0280106 || NVMAP_IOC_MMAP || Returns NotSupported
| 0xC0280106 || Inout || 40 || NVMAP_IOC_MMAP || Returns NotSupported
|-
|-
| 0xC0280107 || NVMAP_IOC_WRITE || Returns NotSupported
| 0xC0280107 || Inout || 40 || NVMAP_IOC_WRITE || Returns NotSupported
|-
|-
| 0xC0280108 || NVMAP_IOC_READ || Returns NotSupported
| 0xC0280108 || Inout || 40 || NVMAP_IOC_READ || Returns NotSupported
|-
|-
| 0xC00C0109 || NVMAP_IOC_PARAM ||
| 0xC00C0109 || Inout || 12 || NVMAP_IOC_PARAM ||
|-
|-
| 0xC010010A || NVMAP_IOC_PIN_MULT || Returns NotSupported
| 0xC010010A || Inout || 16 || NVMAP_IOC_PIN_MULT || Returns NotSupported
|-
|-
| 0xC010010B || NVMAP_IOC_UNPIN_MULT || Returns NotSupported
| 0xC010010B || Inout || 16 || NVMAP_IOC_UNPIN_MULT || Returns NotSupported
|-
|-
| 0xC008010C || NVMAP_IOC_CACHE || Returns NotSupported
| 0xC008010C || Inout || 8 || NVMAP_IOC_CACHE || Returns NotSupported
|-
|-
| 0xC004010D || || Returns NotSupported
| 0xC004010D || Inout || 4 || Returns NotSupported
|-
|-
| 0xC008010E || NVMAP_IOC_GET_ID ||
| 0xC008010E || Inout || 8 || NVMAP_IOC_GET_ID ||
|-
|-
| 0xC004010F || || Returns NotSupported
| 0xC004010F || Inout || 4 || Returns NotSupported
|-
|-
| 0x40040110 || || Returns NotSupported
| 0x40040110 || In || 4 || Returns NotSupported
|-
|-
| 0x00000111 || || Returns NotSupported
| 0x00000111 || - || 0 || Returns NotSupported
|}
|}


== Rest ==
== Channels ==
Channels are a concept for  NVIDIA hardware blocks that share a common interface.
 
{| class="wikitable" border="1"
{| class="wikitable" border="1"
! Device || Value || Description || Notes
! Path || Name
|-
| /dev/nvhost-tsec ||
|-
| /dev/nvhost-gpu ||
|-
| /dev/nvhost-vic ||
|-
| /dev/nvhost-nvdec ||
|-
| /dev/nvhost-nvjpg ||
|}
 
== Channel Ioctls ==
{| class="wikitable" border="1"
! Value || Size || Description || Notes
|-
| 0xC0??0001 || Variable || NVHOST_IOCTL_CHANNEL_SUBMIT ||
|-
| 0xC0080002 || 8 || NVHOST_IOCTL_CHANNEL_GET_SYNCPOINT ||
|-
| 0xC0080003 || 8 || NVHOST_IOCTL_CHANNEL_GET_WAITBASE ||
|-
| 0xC0080004 || 8 || NVHOST_IOCTL_CHANNEL_SET_TIMEOUT_EX ||
|-
| 0x40040007 || 4 || ||
|-
| 0xC0??0009 || Variable || NVHOST_IOCTL_CHANNEL_MAP_BUFFER ||
|-
| 0xC0??000A || Variable || NVHOST_IOCTL_CHANNEL_UNMAP_BUFFER ||
|-
| 0x00000013 || 0 || ||
|- style="border-top: double"
| 0x40044801 || 4 || NVGPU_IOCTL_CHANNEL_SET_NVMAP_FD ||
|-
| 0x40044803 || 4 || NVGPU_IOCTL_CHANNEL_SET_PRIORITY ||
|-
| 0x40084805 || 8 || NVGPU_IOCTL_CHANNEL_ALLOC_GPFIFO ||
|-
| 0xC0044807 || 4 || NVGPU_IOCTL_CHANNEL_CYCLE_STATS ||
|-
| 0xC0184808 || 24 || NVGPU_IOCTL_CHANNEL_SUBMIT_GPFIFO ||
|-
| 0xC0104809 || 16 || NVGPU_IOCTL_CHANNEL_ALLOC_OBJ_CTX ||
|-
| 0x4008480A || 8 || NVGPU_IOCTL_CHANNEL_FREE_OBJ_CTX ||
|-
| 0xC010480B || 16 || NVGPU_IOCTL_CHANNEL_ZCULL_BIND ||
|-
| 0xC018480C || 24 || NVGPU_IOCTL_CHANNEL_SET_ERROR_NOTIFIER ||
|-
| 0x4004480D || 4 || NVGPU_IOCTL_CHANNEL_OPEN ||
|-
| 0x0000480E || 0 || NVGPU_IOCTL_CHANNEL_ENABLE ||
|-
| 0x0000480F || 0 || NVGPU_IOCTL_CHANNEL_DISABLE ||
|-
| 0x00004810 || 0 || NVGPU_IOCTL_CHANNEL_PREEMPT ||
|-
| 0x00004811 || 0 || NVGPU_IOCTL_CHANNEL_FORCE_RESET ||
|-
| 0x40084812 || 8 || NVGPU_IOCTL_CHANNEL_EVENTS_CTRL ||
|-
|-
| /dev/nvhost-* || 0xC0??0001 || NVHOST_IOCTL_CHANNEL_SUBMIT || ?? == size is variable
| 0xC0104813 || 16 || NVGPU_IOCTL_CHANNEL_CYCLE_STATS_SNAPSHOT ||
|-
|-
| /dev/nvhost-* || 0xC0080002 || NVHOST_IOCTL_CHANNEL_GET_SYNCPOINT ||
| 0x80804816 || 128 ||
|-
|-
| /dev/nvhost-* || 0xC0080003 || NVHOST_IOCTL_CHANNEL_GET_WAITBASE ||
| 0xC0104817 || 16 || ||
|-
|-
| /dev/nvhost-* || 0xC0080004 || NVHOST_IOCTL_CHANNEL_SET_TIMEOUT_EX ||
| 0x40204818 || 32 || NVGPU_IOCTL_CHANNEL_ALLOC_GPFIFO_EX ||
|-
|-
| /dev/nvhost-* || 0x40040007 || ||
| 0xC0484819 || 72 ||
|-
|-
| /dev/nvhost-* || 0xC0??0009 || NVHOST_IOCTL_CHANNEL_MAP_BUFFER || ?? == size is variable
| 0xC020481A || 32 || NVGPU_IOCTL_CHANNEL_ALLOC_GPFIFO_EX2 ||
|-
|-
| /dev/nvhost-* || 0xC0??000A || NVHOST_IOCTL_CHANNEL_UNMAP_BUFFER || ?? == size is variable
|- style="border-top: double"
| 0x40084714 || 8 || set_user_address || Group ID is 'H' for Horizon
|-
|-
| /dev/nvhost-* || 0x00000013 || ||
| 0x80084715 || 8 || get_user_address || Group ID is 'H' for Horizon
|}
 
== Remaining Ioctls ==
{| class="wikitable" border="1"
! Device || Value || Description || Notes
|-
|-
| /dev/nvhost-as-gpu || 0x40044101 || NVGPU_AS_IOCTL_BIND_CHANNEL ||
| /dev/nvhost-as-gpu || 0x40044101 || NVGPU_AS_IOCTL_BIND_CHANNEL ||
Line 275: Line 344:
| /dev/nvhost-ctrl-gpu || 0xC010471C || ||
| /dev/nvhost-ctrl-gpu || 0xC010471C || ||
|-
|-
| /dev/nvhost-* || 0x40044801 || NVGPU_IOCTL_CHANNEL_SET_NVMAP_FD ||
|-
| /dev/nvhost-* || 0x40044803 || NVGPU_IOCTL_CHANNEL_SET_PRIORITY ||
|-
| /dev/nvhost-* || 0x40084805 || NVGPU_IOCTL_CHANNEL_ALLOC_GPFIFO ||
|-
| /dev/nvhost-* || 0xC0044807 || NVGPU_IOCTL_CHANNEL_CYCLE_STATS ||
|-
| /dev/nvhost-* || 0xC0184808 || NVGPU_IOCTL_CHANNEL_SUBMIT_GPFIFO ||
|-
| /dev/nvhost-* || 0xC0104809 || NVGPU_IOCTL_CHANNEL_ALLOC_OBJ_CTX ||
|-
| /dev/nvhost-* || 0x4008480A || NVGPU_IOCTL_CHANNEL_FREE_OBJ_CTX ||
|-
| /dev/nvhost-* || 0xC010480B || NVGPU_IOCTL_CHANNEL_ZCULL_BIND ||
|-
| /dev/nvhost-* || 0xC018480C || NVGPU_IOCTL_CHANNEL_SET_ERROR_NOTIFIER ||
|-
| /dev/nvhost-* || 0x4004480D || NVGPU_IOCTL_CHANNEL_OPEN ||
|-
| /dev/nvhost-* || 0x0000480E || NVGPU_IOCTL_CHANNEL_ENABLE ||
|-
| /dev/nvhost-* || 0x0000480F || NVGPU_IOCTL_CHANNEL_DISABLE ||
|-
| /dev/nvhost-* || 0x00004810 || NVGPU_IOCTL_CHANNEL_PREEMPT ||
|-
| /dev/nvhost-* || 0x00004811 || NVGPU_IOCTL_CHANNEL_FORCE_RESET ||
|-
| /dev/nvhost-* || 0x40084812 || NVGPU_IOCTL_CHANNEL_EVENTS_CTRL ||
|-
| /dev/nvhost-* || 0xC0104813 || NVGPU_IOCTL_CHANNEL_CYCLE_STATS_SNAPSHOT ||
|-
| /dev/nvhost-* || 0x40084714 || set_user_address || Group ID is wrong (0x47 should be 0x48)
|-
| /dev/nvhost-* || 0x80084715 || get_user_address || Group ID is wrong (0x47 should be 0x48)
|-
| /dev/nvhost-* || 0x80804816 || ||
|-
| /dev/nvhost-* || 0xC0104817 || ||
|-
| /dev/nvhost-* || 0x40204818 || NVGPU_IOCTL_CHANNEL_ALLOC_GPFIFO_EX ||
|-
| /dev/nvhost-* || 0xC0484819 || ||
|-
| /dev/nvhost-* || 0xC020481A || NVGPU_IOCTL_CHANNEL_ALLOC_GPFIFO_EX2 ||
|}
|}


Revision as of 21:42, 24 May 2017

The Switch makes use of a customized NVIDIA driver.

nvdrv:a

Main NVIDIA driver service.

Cmd Name
0 #Open
1 #Ioctl
2 #Close
3 #Initialize
4 QueryEvent
5 MapSharedMem
6 ?
7 ?
8 BindDisplayService
9 ?

Open

Word Value
0 0x00100004
1 0x00000008
2-4 Type 5 descriptor: Device path
0-1 "SFCI"
2-3 Cmd id (0)

Ioctl

Word Value
0 0x11100004
1 0x00000C0B
? Type 0x21 descriptor: Input buffer
? Type 0x22 descriptor: Output buffer
0-1 "SFCI"
2-3 Cmd id (1)
4 Device fd
5 Ioctl Cmd

Close

Word Value
0 0x00000004
1 0x00000009
0-1 "SFCI"
2-3 Cmd id (2)
4 Device fd

Initialize

Word Value
0 0x00000004
1 0x80000009
? Handle descriptor: Current process
? Handle descriptor: Shared memory mirror
0-1 "SFCI"
2-3 Cmd id (3)
4 Shared memory size

Webkit applet creates the shared memory with perm = 0 and size 0x300000.

Ioctls

The ioctl number is generated with the following primitive (see Linux kernel): 

#define _IOC(inout, group, num, len) \
   (inout | ((len & IOCPARM_MASK) << 16) | ((group) << 8) | (num))

The following table contains known ioctls.

/dev/nvhost-ctrl

Value Direction Size Description Notes
0xC0080014 Inout 8 NVHOST_IOCTL_CTRL_SYNCPT_READ
0x40040015 In 4 NVHOST_IOCTL_CTRL_SYNCPT_INCR
0xC00C0016 Inout 12 NVHOST_IOCTL_CTRL_SYNCPT_WAIT
0x40080017 In 8 NVHOST_IOCTL_CTRL_MODULE_MUTEX
0xC0180018 Inout 24 NVHOST32_IOCTL_CTRL_MODULE_REGRDWR
0xC0100019 Inout 16 NVHOST_IOCTL_CTRL_SYNCPT_WAITEX
0xC008001A Inout 8 NVHOST_IOCTL_CTRL_SYNCPT_READ_MAX
0xC004001C Inout 4
0xC010001D Inout 16 NvRmSyncWaitEvent (wait on event?)
0xC010001E Inout 16 NvRmSyncWaitEvent (wait on event?)
0xC004001F Inout 4 NvRmSyncWaitEvent (signal event?)
0xC0040020 Inout 4 NvRmSyncWaitEvent (signal event?)
0x40080021 In 8 cancel_wait_event Cancels all events

/dev/nvmap

Value Direction Size Description Notes
0xC0080101 Inout 8 NVMAP_IOC_CREATE
0x00000102 - 0 NVMAP_IOC_CLAIM Returns NotSupported
0xC0080103 Inout 8 NVMAP_IOC_FROM_ID
0xC0200104 Inout 32 NVMAP_IOC_ALLOC
0xC0180105 Inout 24 NVMAP_IOC_FREE
0xC0280106 Inout 40 NVMAP_IOC_MMAP Returns NotSupported
0xC0280107 Inout 40 NVMAP_IOC_WRITE Returns NotSupported
0xC0280108 Inout 40 NVMAP_IOC_READ Returns NotSupported
0xC00C0109 Inout 12 NVMAP_IOC_PARAM
0xC010010A Inout 16 NVMAP_IOC_PIN_MULT Returns NotSupported
0xC010010B Inout 16 NVMAP_IOC_UNPIN_MULT Returns NotSupported
0xC008010C Inout 8 NVMAP_IOC_CACHE Returns NotSupported
0xC004010D Inout 4 Returns NotSupported
0xC008010E Inout 8 NVMAP_IOC_GET_ID
0xC004010F Inout 4 Returns NotSupported
0x40040110 In 4 Returns NotSupported
0x00000111 - 0 Returns NotSupported

Channels

Channels are a concept for NVIDIA hardware blocks that share a common interface.

Path Name
/dev/nvhost-tsec
/dev/nvhost-gpu
/dev/nvhost-vic
/dev/nvhost-nvdec
/dev/nvhost-nvjpg

Channel Ioctls

Value Size Description Notes
0xC0??0001 Variable NVHOST_IOCTL_CHANNEL_SUBMIT
0xC0080002 8 NVHOST_IOCTL_CHANNEL_GET_SYNCPOINT
0xC0080003 8 NVHOST_IOCTL_CHANNEL_GET_WAITBASE
0xC0080004 8 NVHOST_IOCTL_CHANNEL_SET_TIMEOUT_EX
0x40040007 4
0xC0??0009 Variable NVHOST_IOCTL_CHANNEL_MAP_BUFFER
0xC0??000A Variable NVHOST_IOCTL_CHANNEL_UNMAP_BUFFER
0x00000013 0
0x40044801 4 NVGPU_IOCTL_CHANNEL_SET_NVMAP_FD
0x40044803 4 NVGPU_IOCTL_CHANNEL_SET_PRIORITY
0x40084805 8 NVGPU_IOCTL_CHANNEL_ALLOC_GPFIFO
0xC0044807 4 NVGPU_IOCTL_CHANNEL_CYCLE_STATS
0xC0184808 24 NVGPU_IOCTL_CHANNEL_SUBMIT_GPFIFO
0xC0104809 16 NVGPU_IOCTL_CHANNEL_ALLOC_OBJ_CTX
0x4008480A 8 NVGPU_IOCTL_CHANNEL_FREE_OBJ_CTX
0xC010480B 16 NVGPU_IOCTL_CHANNEL_ZCULL_BIND
0xC018480C 24 NVGPU_IOCTL_CHANNEL_SET_ERROR_NOTIFIER
0x4004480D 4 NVGPU_IOCTL_CHANNEL_OPEN
0x0000480E 0 NVGPU_IOCTL_CHANNEL_ENABLE
0x0000480F 0 NVGPU_IOCTL_CHANNEL_DISABLE
0x00004810 0 NVGPU_IOCTL_CHANNEL_PREEMPT
0x00004811 0 NVGPU_IOCTL_CHANNEL_FORCE_RESET
0x40084812 8 NVGPU_IOCTL_CHANNEL_EVENTS_CTRL
0xC0104813 16 NVGPU_IOCTL_CHANNEL_CYCLE_STATS_SNAPSHOT
0x80804816 128
0xC0104817 16
0x40204818 32 NVGPU_IOCTL_CHANNEL_ALLOC_GPFIFO_EX
0xC0484819 72
0xC020481A 32 NVGPU_IOCTL_CHANNEL_ALLOC_GPFIFO_EX2
0x40084714 8 set_user_address Group ID is 'H' for Horizon
0x80084715 8 get_user_address Group ID is 'H' for Horizon

Remaining Ioctls

Device Value Description Notes
/dev/nvhost-as-gpu 0x40044101 NVGPU_AS_IOCTL_BIND_CHANNEL
/dev/nvhost-as-gpu 0xC0184102 NVGPU_AS_IOCTL_ALLOC_SPACE
/dev/nvhost-as-gpu 0xC0104103 NVGPU_AS_IOCTL_FREE_SPACE
/dev/nvhost-as-gpu 0xC0184104 NVGPU_AS_IOCTL_MAP_BUFFER
/dev/nvhost-as-gpu 0xC0084105 NVGPU_AS_IOCTL_UNMAP_BUFFER
/dev/nvhost-as-gpu 0xC0284106 NVGPU_AS_IOCTL_MAP_BUFFER_EX
/dev/nvhost-as-gpu 0x40104107 init_as_gpu Initializes the as-gpu node
/dev/nvhost-as-gpu 0xC0404108 NVGPU_AS_IOCTL_GET_VA_REGIONS?
/dev/nvhost-as-gpu 0x40284109 init_as_gpu_ex Initializes the as-gpu node (with more params)
/dev/nvhost-as-gpu 0xC0144114
/dev/nvhost-dbg-gpu 0x40084401 NVGPU_DBG_GPU_IOCTL_BIND_CHANNEL
/dev/nvhost-dbg-gpu 0xC0??4402 NVGPU_DBG_GPU_IOCTL_REG_OPS ?? == size is unknown
/dev/nvhost-dbg-gpu 0x40084403 NVGPU_DBG_GPU_IOCTL_EVENTS_CTRL
/dev/nvhost-dbg-gpu 0x40044404 NVGPU_DBG_GPU_IOCTL_POWERGATE
/dev/nvhost-dbg-gpu 0x40044405 NVGPU_DBG_GPU_IOCTL_SMPC_CTXSW_MODE
/dev/nvhost-dbg-gpu 0xC0184407 NVGPU_DBG_GPU_IOCTL_PERFBUF_MAP
/dev/nvhost-dbg-gpu 0x40084408 NVGPU_DBG_GPU_IOCTL_PERFBUF_UNMAP
/dev/nvhost-dbg-gpu 0x40084409 NVGPU_DBG_GPU_IOCTL_PC_SAMPLING
/dev/nvhost-ctrl-gpu 0x80044701 NVGPU_GPU_IOCTL_ZCULL_GET_CTX_SIZE
/dev/nvhost-ctrl-gpu 0x80284702 NVGPU_GPU_IOCTL_ZCULL_GET_INFO
/dev/nvhost-ctrl-gpu 0x402C4703 NVGPU_GPU_IOCTL_ZBC_SET_TABLE
/dev/nvhost-ctrl-gpu 0xC0344704 NVGPU_GPU_IOCTL_ZBC_QUERY_TABLE
/dev/nvhost-ctrl-gpu 0xC0B04705 NVGPU_GPU_IOCTL_GET_CHARACTERISTICS
/dev/nvhost-ctrl-gpu 0xC0184706 NVGPU_GPU_IOCTL_GET_TPC_MASKS
/dev/nvhost-ctrl-gpu 0x40084707 NVGPU_GPU_IOCTL_OPEN_CHANNEL
/dev/nvhost-ctrl-gpu 0x4008470E
/dev/nvhost-ctrl-gpu 0x4010470F
/dev/nvhost-ctrl-gpu 0xC0084710
/dev/nvhost-ctrl-gpu 0x80084711
/dev/nvhost-ctrl-gpu 0x80084712
/dev/nvhost-ctrl-gpu 0xC0044713
/dev/nvhost-ctrl-gpu 0x80084714
/dev/nvhost-ctrl-gpu 0x80044715
/dev/nvhost-ctrl-gpu 0x8018471A
/dev/nvhost-ctrl-gpu 0xC008471B
/dev/nvhost-ctrl-gpu 0xC010471C

nvmemp

NVIDIA memory profiler (this service is not available on retail units).

mm:u

NVIDIA multimedia (NvMM) platform service.

Cmd Name
0 ?
1 ?
2 ?
3 ?
4 module_init_clk
5 module_deinit_clk
6 module_set_clk_rate
7 module_get_clk_rate

Errors

Most nvidia driver commands return an error code apart from the normal return code.

Cmd Name
0 Success
1 NotImplemented
2 NotSupported
3 NotInitialized
4 BadParameter
5 Timeout
6 InsufficientMemory
7 ReadOnlyAttribute
8 InvalidState
9 InvalidAddress
0xA InvalidSize
0xB BadValue
0xD AlreadyAllocated
0xE Busy
0xF ResourceError
0x10 CountMismatch
0x1000 Shared memory too small
Retrieved from "https://switchbrew.org/w/index.php?title=NV_services&oldid=543"