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Line 9:
Line 9: − + Line 28:
Line 28: − + − Just like any standard build of the NVIDIA graphics' drivers, the nvdrv:a service operates mainly by processing requests and sending them to the kernel (not verified) through IOCtl commands.+ − Note that these commands are generated with the following primitive (see Linux kernel): − + − This group consists in commands for the "/dev/nvhost-ctrl" interface and a few global commands for every nvhost channel (e.g.: "/dev/nvhost-gpu").+ − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − − − The following table contains valid commands for group 0x01. − This group consists in commands for the "/dev/nvmap" interface. − {| class="wikitable" border="1" − ! Value || Description || Notes − + − + − + − + − + − + − + − − − The following table contains valid commands for group 0x41 ('A'). − This group consists in commands for the "/dev/nvhost-as-gpu" interface. − {| class="wikitable" border="1" − ! Value || Description || Notes − + − + − + − + − + − + − + − + − + − + − + − − − The following table contains valid commands for group 0x44 ('D'). − This group consists in commands for the "/dev/nvhost-dbg-gpu" interface. − {| class="wikitable" border="1" − ! Value || Description || Notes − + − + − − − The following table contains valid commands for group 0x47 ('G'). − This group consists in commands for the "/dev/nvhost-ctrl-gpu" interface. − {| class="wikitable" border="1" − ! Value || Description || Notes − + − + − + − + − + − + − + − + − + − |- − | 0xC0084710 || Unknown || − |- − | 0x80084711 || Unknown || − |- − | 0x80084714 || Unknown || − |- − | 0xC008471B || Unknown || − |- − | 0xC010471C || Unknown || − |- − |} − − − The following table contains valid commands for group 0x48 ('H'). − This group consists in commands common to all nvhost channels (depending if they implement them or not), but they are only listed here in relation to the interface "/dev/nvhost-gpu" for convenience. − {| class="wikitable" border="1" − ! Value || Description || Notes − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + +
cleaning up, removing speculation
| 0 || Open
| 0 || Open
|-
|-
| 1 || [[#Ioctl]]
| 1 || Ioctl
|-
|-
| 2 || Close
| 2 || Close
|}
|}
== Ioctl ==
== Ioctls ==
The ioctl number is generated with the following primitive (see Linux kernel):
#define _IOC(inout, group, num, len) \
#define _IOC(inout, group, num, len) \
(inout | ((len & IOCPARM_MASK) << 16) | ((group) << 8) | (num))
(inout | ((len & IOCPARM_MASK) << 16) | ((group) << 8) | (num))
The following table contains valid commands for group 0x00.
The following table contains known ioctls.
{| class="wikitable" border="1"
{| class="wikitable" border="1"
! Value || Description || Notes
! Device || Value || Description || Notes
|-
|-
| 0xC0??0001 || NVHOST32_IOCTL_CHANNEL_SUBMIT || ?? == size is unknown
| /dev/nvhost-* || 0xC0??0001 || NVHOST32_IOCTL_CHANNEL_SUBMIT || ?? == size is unknown
|-
|-
| 0xC0080002 || NVHOST_IOCTL_CHANNEL_GET_SYNCPOINT ||
| /dev/nvhost-* || 0xC0080002 || NVHOST_IOCTL_CHANNEL_GET_SYNCPOINT ||
|-
|-
| 0xC0080003 || NVHOST_IOCTL_CHANNEL_GET_WAITBASE ||
| /dev/nvhost-* || 0xC0080003 || NVHOST_IOCTL_CHANNEL_GET_WAITBASE ||
|-
|-
| 0xC0080004 || NVHOST_IOCTL_CHANNEL_SET_TIMEOUT_EX ||
| /dev/nvhost-* || 0xC0080004 || NVHOST_IOCTL_CHANNEL_SET_TIMEOUT_EX ||
|-
|-
| 0xC01C0009 || NVHOST_IOCTL_CHANNEL_SUBMIT(?) ||
| /dev/nvhost-* || 0xC01C0009 || NVHOST_IOCTL_CHANNEL_SUBMIT(?) ||
|-
|-
| 0xC01C000A || NVHOST_IOCTL_CHANNEL_MODULE_REGRDWR(?) ||
| /dev/nvhost-* || 0xC01C000A || NVHOST_IOCTL_CHANNEL_MODULE_REGRDWR(?) ||
|-
|-
| 0xC0080014 || NVHOST_IOCTL_CTRL_SYNCPT_READ ||
| /dev/nvhost-* || 0xC0080014 || NVHOST_IOCTL_CTRL_SYNCPT_READ ||
|-
|-
| 0x40040015 || NVHOST_IOCTL_CTRL_SYNCPT_INCR ||
| /dev/nvhost-* || 0x40040015 || NVHOST_IOCTL_CTRL_SYNCPT_INCR ||
|-
|-
| 0xC00C0016 || NVHOST_IOCTL_CTRL_SYNCPT_WAIT ||
| /dev/nvhost-* || 0xC00C0016 || NVHOST_IOCTL_CTRL_SYNCPT_WAIT ||
|-
|-
| 0x40080017 || NVHOST_IOCTL_CTRL_MODULE_MUTEX ||
| /dev/nvhost-* || 0x40080017 || NVHOST_IOCTL_CTRL_MODULE_MUTEX ||
|-
|-
| 0xC0180018 || NVHOST32_IOCTL_CTRL_MODULE_REGRDWR ||
| /dev/nvhost-* || 0xC0180018 || NVHOST32_IOCTL_CTRL_MODULE_REGRDWR ||
|-
|-
| 0xC0100019 || NVHOST_IOCTL_CTRL_SYNCPT_WAITEX ||
| /dev/nvhost-* || 0xC0100019 || NVHOST_IOCTL_CTRL_SYNCPT_WAITEX ||
|-
|-
| 0xC008001A || NVHOST_IOCTL_CTRL_SYNCPT_READ_MAX ||
| /dev/nvhost-* || 0xC008001A || NVHOST_IOCTL_CTRL_SYNCPT_READ_MAX ||
|-
|-
| 0xC004001C || NVHOST_IOCTL_CTRL_GET_VERSION(?) ||
| /dev/nvhost-* || 0xC004001C || NVHOST_IOCTL_CTRL_GET_VERSION(?) ||
|-
|-
| 0xC010001D || Unknown || NvRmSyncWaitEvent (wait on event?
| /dev/nvhost-* || 0xC010001D || || NvRmSyncWaitEvent (wait on event?)
|-
|-
| 0xC010001E || Unknown || NvRmSyncWaitEvent (wait on event?)
| /dev/nvhost-* || 0xC010001E || || NvRmSyncWaitEvent (wait on event?)
|-
|-
| 0xC004001F || Unknown || NvRmSyncWaitEvent (signal event?)
| /dev/nvhost-* || 0xC004001F || || NvRmSyncWaitEvent (signal event?)
|-
|-
| 0xC0040020 || Unknown || NvRmSyncWaitEvent (signal event?)
| /dev/nvhost-* || 0xC0040020 || || NvRmSyncWaitEvent (signal event?)
|-
|-
| 0x40080021 || Unknown || Returns busy?
| /dev/nvhost-* || 0x40080021 || || Returns busy?
|-
|-
|}
| /dev/nvmap || 0xC0080101 || NVMAP_IOC_CREATE ||
|-
|-
| 0xC0080101 || NVMAP_IOC_CREATE ||
| /dev/nvmap || 0xC0080103 || NVMAP_IOC_FROM_ID ||
|-
|-
| 0xC0080103 || NVMAP_IOC_FROM_ID ||
| /dev/nvmap || 0xC0200104 || NVMAP_IOC_ALLOC ||
|-
|-
| 0xC0200104 || NVMAP_IOC_ALLOC ||
| /dev/nvmap || 0xC0180105 || NVMAP_IOC_FREE ||
|-
|-
| 0xC0180105 || NVMAP_IOC_FREE ||
| /dev/nvmap || 0xC00C0109 || NVMAP_IOC_PARAM ||
|-
|-
| 0xC00C0109 || NVMAP_IOC_PARAM ||
| /dev/nvmap || 0xC008010E || NVMAP_IOC_GET_ID ||
|-
|-
| 0xC008010E || NVMAP_IOC_GET_ID ||
| /dev/nvhost-as-gpu || 0x40044101 || NVGPU_AS_IOCTL_BIND_CHANNEL ||
|-
|-
|}
| /dev/nvhost-as-gpu || 0xC0184102 || NVGPU32_AS_IOCTL_ALLOC_SPACE ||
|-
|-
| 0x40044101 || NVGPU_AS_IOCTL_BIND_CHANNEL ||
| /dev/nvhost-as-gpu || 0xC0104103 || NVGPU_AS_IOCTL_FREE_SPACE ||
|-
|-
| 0xC0184102 || NVGPU32_AS_IOCTL_ALLOC_SPACE ||
| /dev/nvhost-as-gpu || 0xC0184104 || NVGPU_AS_IOCTL_MAP_BUFFER ||
|-
|-
| 0xC0104103 || NVGPU_AS_IOCTL_FREE_SPACE ||
| /dev/nvhost-as-gpu || 0xC0084105 || NVGPU_AS_IOCTL_UNMAP_BUFFER ||
|-
|-
| 0xC0184104 || NVGPU_AS_IOCTL_MAP_BUFFER ||
| /dev/nvhost-as-gpu || 0xC0284106 || NVGPU_AS_IOCTL_ALLOC_SPACE ||
|-
|-
| 0xC0084105 || NVGPU_AS_IOCTL_UNMAP_BUFFER ||
| /dev/nvhost-as-gpu || 0x40104107 || ||
|-
|-
| 0xC0284106 || NVGPU_AS_IOCTL_ALLOC_SPACE ||
| /dev/nvhost-as-gpu || 0xC0404108 || ||
|-
|-
| 0x40104107 || Unknown ||
| /dev/nvhost-as-gpu || 0x40284109 || ||
|-
|-
| 0xC0404108 || Unknown ||
| /dev/nvhost-as-gpu || 0xC0144114 || ||
|-
|-
| 0x40284109 || Unknown ||
| /dev/nvhost-dbg-gpu || 0xC0??4402 || NVGPU_DBG_GPU_IOCTL_REG_OPS || ?? == size is unknown
|-
|-
| 0xC0144114 || Unknown ||
| /dev/nvhost-ctrl-gpu || 0x80044701 || NVGPU_GPU_IOCTL_ZCULL_GET_CTX_SIZE ||
|-
|-
|}
| /dev/nvhost-ctrl-gpu || 0x80284702 || NVGPU_GPU_IOCTL_ZCULL_GET_INFO ||
|-
|-
| 0xC0??4402 || NVGPU_DBG_GPU_IOCTL_REG_OPS || ?? == size is unknown
| /dev/nvhost-ctrl-gpu || 0x402C4703 || NVGPU_GPU_IOCTL_ZBC_SET_TABLE ||
|-
|-
|}
| /dev/nvhost-ctrl-gpu || 0xC0344704 || NVGPU_GPU_IOCTL_ZBC_QUERY_TABLE ||
|-
|-
| 0x80044701 || NVGPU_GPU_IOCTL_ZCULL_GET_CTX_SIZE ||
| /dev/nvhost-ctrl-gpu || 0xC0B04705 || NVGPU_GPU_IOCTL_GET_CHARACTERISTICS ||
|-
|-
| 0x80284702 || NVGPU_GPU_IOCTL_ZCULL_GET_INFO ||
| /dev/nvhost-ctrl-gpu || 0xC0184706 || NVGPU_AS_IOCTL_ALLOC_SPACE ||
|-
|-
| 0x402C4703 || NVGPU_GPU_IOCTL_ZBC_SET_TABLE ||
| /dev/nvhost-ctrl-gpu || 0x40084707 || ||
|-
|-
| 0xC0344704 || NVGPU_GPU_IOCTL_ZBC_QUERY_TABLE ||
| /dev/nvhost-ctrl-gpu || 0x4008470E || ||
|-
|-
| 0xC0B04705 || NVGPU_GPU_IOCTL_GET_CHARACTERISTICS ||
| /dev/nvhost-ctrl-gpu || 0x4010470F || ||
|-
|-
| 0xC0184706 || NVGPU_AS_IOCTL_ALLOC_SPACE ||
| /dev/nvhost-ctrl-gpu || 0xC0084710 || ||
|-
|-
| 0x40084707 || Unknown ||
| /dev/nvhost-ctrl-gpu || 0x80084711 || ||
|-
|-
| 0x4008470E || Unknown ||
| /dev/nvhost-ctrl-gpu || 0x80084714 || ||
|-
|-
| 0x4010470F || Unknown ||
| /dev/nvhost-ctrl-gpu || 0xC008471B || ||
|-
|-
| 0x40044801 || NVGPU_IOCTL_CHANNEL_SET_NVMAP_FD ||
| /dev/nvhost-ctrl-gpu || 0xC010471C || ||
|-
|-
| 0x40044803 || NVGPU_IOCTL_CHANNEL_SET_TIMEOUT(?) ||
| /dev/nvhost-* || 0x40044801 || NVGPU_IOCTL_CHANNEL_SET_NVMAP_FD ||
|-
|-
| 0x40084805 || NVGPU_IOCTL_CHANNEL_SET_TIMEOUT_EX(?) ||
| /dev/nvhost-* || 0x40044803 || NVGPU_IOCTL_CHANNEL_SET_TIMEOUT(?) ||
|-
|-
| 0xC0044807 || NVGPU_IOCTL_CHANNEL_CYCLE_STATS ||
| /dev/nvhost-* || 0x40084805 || NVGPU_IOCTL_CHANNEL_SET_TIMEOUT_EX(?) ||
|-
|-
| 0xC0184808 || NVGPU_IOCTL_CHANNEL_SUBMIT_GPFIFO ||
| /dev/nvhost-* || 0xC0044807 || NVGPU_IOCTL_CHANNEL_CYCLE_STATS ||
|-
|-
| 0xC0104809 || NVGPU_IOCTL_CHANNEL_ALLOC_OBJ_CTX ||
| /dev/nvhost-* || 0xC0184808 || NVGPU_IOCTL_CHANNEL_SUBMIT_GPFIFO ||
|-
|-
| 0x4008480A || NVGPU_IOCTL_CHANNEL_FREE_OBJ_CTX ||
| /dev/nvhost-* || 0xC0104809 || NVGPU_IOCTL_CHANNEL_ALLOC_OBJ_CTX ||
|-
|-
| 0xC010480B || NVGPU_IOCTL_CHANNEL_ZCULL_BIND ||
| /dev/nvhost-* || 0x4008480A || NVGPU_IOCTL_CHANNEL_FREE_OBJ_CTX ||
|-
|-
| 0xC018480C || NVGPU_IOCTL_CHANNEL_SET_ERROR_NOTIFIER ||
| /dev/nvhost-* || 0xC010480B || NVGPU_IOCTL_CHANNEL_ZCULL_BIND ||
|-
|-
| 0x4004480D || NVGPU_IOCTL_CHANNEL_OPEN ||
| /dev/nvhost-* || 0xC018480C || NVGPU_IOCTL_CHANNEL_SET_ERROR_NOTIFIER ||
|-
|-
| 0x0000480E || NVGPU_IOCTL_CHANNEL_ENABLE ||
| /dev/nvhost-* || 0x4004480D || NVGPU_IOCTL_CHANNEL_OPEN ||
|-
|-
| 0x0000480F || NVGPU_IOCTL_CHANNEL_DISABLE ||
| /dev/nvhost-* || 0x0000480E || NVGPU_IOCTL_CHANNEL_ENABLE ||
|-
|-
| 0x00004810 || NVGPU_IOCTL_CHANNEL_PREEMPT ||
| /dev/nvhost-* || 0x0000480F || NVGPU_IOCTL_CHANNEL_DISABLE ||
|-
|-
| 0x00004811 || NVGPU_IOCTL_CHANNEL_FORCE_RESET ||
| /dev/nvhost-* || 0x00004810 || NVGPU_IOCTL_CHANNEL_PREEMPT ||
|-
|-
| 0x40084812 || NVGPU_IOCTL_CHANNEL_EVENTS_CTRL ||
| /dev/nvhost-* || 0x00004811 || NVGPU_IOCTL_CHANNEL_FORCE_RESET ||
|-
|-
| 0xC0104813 || NVGPU_IOCTL_CHANNEL_CYCLE_STATS_SNAPSHOT ||
| /dev/nvhost-* || 0x40084812 || NVGPU_IOCTL_CHANNEL_EVENTS_CTRL ||
|-
|-
| 0x80804816 || Unknown ||
| /dev/nvhost-* || 0xC0104813 || NVGPU_IOCTL_CHANNEL_CYCLE_STATS_SNAPSHOT ||
|-
|-
| 0xC0104817 || Unknown ||
| /dev/nvhost-* || 0x80804816 || ||
|-
|-
| 0x40204818 || Unknown ||
| /dev/nvhost-* || 0xC0104817 || ||
|-
|-
| 0xC0184819 || Unknown ||
| /dev/nvhost-* || 0x40204818 || ||
|-
|-
| 0xC020481A || Unknown ||
| /dev/nvhost-* || 0xC0184819 || ||
|-
|-
| /dev/nvhost-* || 0xC020481A || ||
|}
|}