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→NVGPU_IOCTL_CHANNEL_GET_ERROR_INFO
= nvdrv, nvdrv:a, nvdrv:s, nvdrv:t =
= nvdrv, nvdrv:a, nvdrv:s, nvdrv:t =
This is "nns::nvdrv::INvDrvServices".
This is "nns::nvdrv::INvDrvServices".
Each service is used by:
Each service is used by:
* "nvdrv": Applications.
* "nvdrv": Applications.
** [[#Permissions|Permission]] mask is [3.0.0+] 0xA82B ([1.0.0-2.3.0] 0x2B).
** [[#NvDrvPermission|Permission]] mask is [11.0.0+] 0xA83B ([1.0.0-2.3.0] 0x2B, [3.0.0+] 0xA82B).
* "nvdrv:a": Applets.
* "nvdrv:a": Applets.
** [[#Permissions|Permission]] mask is [3.0.0+] 0x10A9 ([1.0.0-2.3.0] 0xA9).
** [[#NvDrvPermission|Permission]] mask is [3.0.0+] 0x10A9 ([1.0.0-2.3.0] 0xA9).
* "nvdrv:s": Sysmodules.
* "nvdrv:s": Sysmodules.
** [[#Permissions|Permission]] mask is [3.0.0+] 0x439E ([1.0.0-2.3.0] 0x39E).
** [[#NvDrvPermission|Permission]] mask is [3.0.0+] 0x439E ([1.0.0-2.3.0] 0x39E).
* "nvdrv:t": Factory.
* "nvdrv:t": Factory.
** [[#Permissions|Permission]] mask is 0xFFFFFFFF.
** [[#NvDrvPermission|Permission]] mask is 0xFFFFFFFF.
{| class="wikitable" border="1"
{| class="wikitable" border="1"
== Open ==
== Open ==
Takes a type-0x5 input buffer for the device-path. Returns the output 32bit '''fd''' and the u32 '''error_code'''.
Takes a type-0x5 input buffer '''Path'''. Returns two output u32s '''FdOut''' and '''Err'''.
== Ioctl ==
== Ioctl ==
Takes a 32bit '''fd''', an u32 '''ioctl_cmd''', a type-0x21 input buffer, and a type-0x22 output buffer. Returns an output u32 ('''error_code''').
Takes two input u32s '''Fd''' and '''Iocode''', a type-0x21 input buffer and a type-0x22 output buffer. Returns an output u32 '''Err'''.
The addr/size for send/recv buffers are only set when the associated direction bit is set in the ioctl cmd (addr/size = 0 otherwise).
The addr/size for send/recv buffers are only set when the associated direction bit is set in the ioctl cmd (addr/size = 0 otherwise).
== Close ==
== Close ==
Takes a 32bit '''fd'''. Returns an output u32 ('''error_code''').
Takes an input u32 '''Fd'''. Returns an output u32 '''Err'''.
== Initialize ==
== Initialize ==
Takes two copy-handles ('''current_process''' and '''transfer_memory''') and an input u32 ('''transfer_memory_size'''). Returns an output u32 ('''error_code''').
Takes an input Process handle, an input TransferMemory handle and an input u32 '''Size'''. Returns an output u32 '''Err'''.
Webkit applet creates the transfer-memory with perm = 0 and size 0x300000.
Webkit applet creates the TransferMemory with perm == 0 and size == 0x300000.
== QueryEvent ==
== QueryEvent ==
Takes two input u32s ('''fd''' and '''event_id'''), with the second word immediately after the first one. Returns an output u32 ('''error_code''') and a copy-handle ('''event_handle''').
Takes two input u32s '''Fd''' and '''EvtId'''. Returns an output u32 '''Err''' and an output Event handle.
QueryEvent is only supported on (and implemented differently on):
QueryEvent is only supported on (and implemented differently on):
* /dev/nvhost-gpu
* /dev/nvhost-gpu
** 1: SmException_BptIntReport
** EvtId=1: SmException_BptIntReport
** 2: SmException_BptPauseReport
** EvtId=2: SmException_BptPauseReport
** 3: ErrorNotifierEvent
** EvtId=3: ErrorNotifierEvent
* /dev/nvhost-ctrl: Used to get events for SyncPts.
* /dev/nvhost-ctrl: Used to get events for syncpts.
** If bit31-28 is 1, then lower 16-bits contain event_slot, bit27-16 contain syncpt_number.
** EvtId=(event_slot | ((syncpt_id & 0xFFF) << 16) | (is_valid << 28)): New format used by [[#NVHOST_IOCTL_CTRL_SYNCPT_WAIT_EVENT|NVHOST_IOCTL_CTRL_SYNCPT_WAIT_EVENT]]/[[#NVHOST_IOCTL_CTRL_SYNCPT_WAIT_EVENT_EX|NVHOST_IOCTL_CTRL_SYNCPT_WAIT_EVENT_EX]].
** If bit31-28 is 0, then lower 4-bits contain event_slot, bit31-4 contains syncpt_number.
** EvtId=(event_slot | (syncpt_id << 4)): Old format used by [[#NVHOST_IOCTL_CTRL_SYNCPT_WAITEX|NVHOST_IOCTL_CTRL_SYNCPT_WAITEX]].
* /dev/nvhost-ctrl-gpu
* /dev/nvhost-ctrl-gpu
** 1: Returns error_event_handle.
** EvtId=1: Returns error_event_handle.
** 2: Returns unknown event.
** EvtId=2: Returns unknown event.
* /dev/nvhost-dbg-gpu
* /dev/nvhost-dbg-gpu
** Ignores event_id.
** Ignores EvtId.
== MapSharedMem ==
== MapSharedMem ==
Takes a copy-handle ('''transfer_memory''') and two input u32s ('''fd''' and '''nvmap_handle'''). Returns an output u32 ('''error_code''').
Takes an input TransferMemory handle and two input u32s '''Fd''' and '''HMem'''. Returns an output u32 '''Err'''.
'''HMem''' is a [[#/dev/nvmap|/dev/nvmap]] memory handle.
== GetStatus ==
== GetStatus ==
Takes no input. Returns 0x10-bytes and an output u32 ('''error_code''').
Takes no input. Returns an output [[#NvDrvStatus]] and an output u32 '''Err'''.
== SetAruidWithoutCheck ==
== SetAruidWithoutCheck ==
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 '''Aruid'''. Returns an output u32 '''Err'''.
'''Aruid''' must [[IPC_Marshalling|match]] the current [[Applet_Manager_services#AppletResourceUserId|AppletResourceUserId]].
== SetAruid ==
== 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 input [[Applet_Manager_services#AppletResourceUserId|AppletResourceUserId]]. Returns an output u32 '''Err'''.
== DumpStatus ==
== DumpStatus ==
No input or output.
No input/output.
== InitializeDevtools ==
== InitializeDevtools ==
Takes a copy-handle ('''transfer_memory''') and an input u32 ('''transfer_memory_size'''). Returns an output u32 ('''error_code''').
Takes an input TransferMemory handle and an input u32 '''Size'''. Returns an output u32 '''Err'''.
== Ioctl2 ==
== Ioctl2 ==
Takes a type-0x21 buffer, a type-0x22 buffer, a type-0x21 buffer, and two input u32s. Returns an output u32 ('''error_code''').
Takes two input u32s '''Fd''' and '''Iocode''', two type-0x21 input buffers and a type-0x22 output buffer. Returns an output u32 '''Err'''.
== Ioctl3 ==
== Ioctl3 ==
Takes a type-0x21 buffer, a type-0x22 buffer, another type-0x22 buffer, and two input u32s. Returns an output u32 (error_code).
Takes two input u32s '''Fd''' and '''Iocode''', a type-0x21 input buffer and two type-0x22 output buffers. Returns an output u32 '''Err'''.
== SetGraphicsFirmwareMemoryMarginEnabled ==
== SetGraphicsFirmwareMemoryMarginEnabled ==
This sets a boolean value based on the input u64 and the value of the "nv!nv_graphics_firmware_memory_margin" system configuration, but only for "nvdrv" (the other services default to false).
This sets a boolean value based on the input u64 and the value of the "nv!nv_graphics_firmware_memory_margin" system configuration, but only for "nvdrv" (the other services default to false).
[3.0.0+] Official user-processes now use this at the end of nvdrv service init with value 0x1.
= nvmemp =
This is "nv::MemoryProfiler::IMemoryProfiler".
/dev/nvhost-ctrl sends the ioctl NVHOST_IOCTL_CTRL_GET_CONFIG to check the config "nv!NV_MEMORY_PROFILER". If config_str returns "1", the application attempts to use nvmemp.
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
| 0
! Cmd || Name
| NvDrvPermission_Gpu
|-
|-
| 1
| 0 || [[#Open_2|Open]]
| NvDrvPermission_GpuDebug
| Can access [[#/dev/nvhost-dbg-gpu|/dev/nvhost-dbg-gpu]] and [[#/dev/nvhost-prof-gpu|/dev/nvhost-prof-gpu]].
|-
|-
| 2
| 1 || [[#GetPid|GetPid]]
| NvDrvPermission_GpuSchedule
|}
| Can access [[#/dev/nvsched-ctrl|/dev/nvsched-ctrl]].
== Open ==
Takes an input TransferMemory handle and an input u32 '''Size'''. No output.
== GetPid ==
No input. Returns an output u32 '''Pid'''.
= nvdrvdbg =
This is "nns::nvdrv::INvDrvDebugFSServices".
{| class="wikitable" border="1"
|-
|-
| 3
! Cmd || Name
| NvDrvPermission_VIC
|-
|-
| 4
| 0 || [[#DebugFSOpen]]
| NvDrvPermission_VideoEncoder
|-
| Can access [[#Channels|/dev/nvhost-msenc]].
| 1 || [[#DebugFSClose]]
|-
|-
| 5
| 2 || [[#GetDebugFSKeys]]
| NvDrvPermission_VideoDecoder
| Can access [[#Channels|/dev/nvhost-nvdec]].
|-
|-
| 6
| 3 || [[#GetDebugFSValue]]
| NvDrvPermission_TSEC
| Can access [[#Channels|/dev/nvhost-tsec]].
|-
|-
| 7
| 4 || [[#SetDebugFSValue]]
| NvDrvPermission_JPEG
|}
| Can access [[#Channels|/dev/nvhost-nvjpg]].
== DebugFSOpen ==
Takes an input Process handle. Returns an output u32 '''Handle'''.
== DebugFSClose ==
Takes an input u32 '''Handle'''. No output.
== GetDebugFSKeys ==
Takes an input u32 '''Handle''' and a type-0x6 output buffer '''OutValueBuf'''. Returns an output u32 '''Err'''.
== GetDebugFSValue ==
Takes an input u32 '''Handle''', a type-0x5 input buffer '''InKeyBuf''' and a type-0x6 output buffer '''OutValueBuf'''. Returns an output u32 '''Err'''.
== SetDebugFSValue ==
Takes an input u32 '''Handle''' and two type-0x5 input buffers '''InKeyBuf''' and '''InValueBuf'''. Returns an output u32 '''Err'''.
= nvgem:c =
This is "nv::gemcontrol::INvGemControl".
{| class="wikitable" border="1"
|-
|-
| 8
! Cmd || Name
| NvDrvPermission_Display
|-
|-
| 9
| 0 || [[#Initialize_2|Initialize]]
| NvDrvPermission_ImportMemory
| Can duplicate [[#/dev/nvmap|nvmap]] handles from other processes with [[#NVMAP_IOC_FROM_ID|NVMAP_IOC_FROM_ID]].
|-
|-
| 10
| 1 || [[#GetEventHandle|GetEventHandle]]
| NvDrvPermission_NoCheckedAruid
| Can use [[#SetAruidWithoutCheck|SetAruidWithoutCheck]].
|-
|-
| 11
| 2 || [[#ControlNotification|ControlNotification]]
|
|-
| Can use [[#SetGraphicsFirmwareMemoryMarginEnabled|SetGraphicsFirmwareMemoryMarginEnabled]].
| 3 || [[#SetNotificationPerm|SetNotificationPerm]]
|-
|-
| 12
| 4 || [[#SetCoreDumpPerm|SetCoreDumpPerm]]
|
| Can duplicate exported [[#/dev/nvmap|nvmap]] handles from other processes with [[#NVMAP_IOC_FROM_ID|NVMAP_IOC_FROM_ID]].
|-
|-
| 13
| 5 || [1.0.0-4.1.0] [[#GetAruid|GetAruid]]
|
|
|-
|-
| 14
| 6 || [[#Reset|Reset]]
|
| 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
| 7 || [3.0.0+] [[#GetAruid2|GetAruid2]]
|
|
|}
|}
== Initialize ==
No input. Returns an output u32 '''Err'''.
== GetEventHandle ==
No input. Returns an output Event handle and an output u32 '''Err'''.
== ControlNotification ==
Takes an input bool '''Enable'''. Returns an output u32 '''Err'''.
== SetNotificationPerm ==
Takes an input u64 '''Aruid''' and an input bool '''Enable'''. Returns an output u32 '''Err'''.
== SetCoreDumpPerm ==
Takes an input u64 '''Aruid''' and an input bool '''Enable'''. Returns an output u32 '''Err'''.
== GetAruid ==
No input. Returns an output u64 '''Aruid''' and an output u32 '''Err'''.
== Reset ==
No input. Returns an output u32 '''Err'''.
= Ioctls =
== GetAruid2 ==
Unofficial name.
No input. Returns an output u64 '''Aruid''', an output bool '''IsCoreDumpEnabled''' and an output u32 '''Err'''.
= nvgem:cd =
This is "nv::gemcoredump::INvGemCoreDump".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
| 0xC0080014 || Inout || 8 || [[#NVHOST_IOCTL_CTRL_SYNCPT_READ]]
! Cmd || Name
|-
|-
| 0x40040015 || In || 4 || [[#NVHOST_IOCTL_CTRL_SYNCPT_INCR]]
| 0 || [[#Initialize_3|Initialize]]
|-
|-
|-
| 0xC004001F || Inout || 4 || [[#NVHOST_IOCTL_CTRL_SYNCPT_REGISTER_EVENT]]
| 1 || [[#GetAruid_2|GetAruid]]
|-
|-
| 0xC0040020 || Inout || 4 || [[#NVHOST_IOCTL_CTRL_SYNCPT_UNREGISTER_EVENT]]
| 2 || [1.0.0-8.1.0] [[#ReadNextBlock|ReadNextBlock]]
|-
|-
| 0x40080021 || In || 8 || [[#NVHOST_IOCTL_CTRL_SYNCPT_FREE_EVENTS]]
| 3 || [8.0.0+] [[#GetNextBlockSize|GetNextBlockSize]]
|-
|-
| 4 || [8.0.0+] [[#ReadNextBlock2|ReadNextBlock2]]
|}
|}
=== NVHOST_IOCTL_CTRL_SYNCPT_READ ===
== Initialize ==
No input. Returns an output u32 '''Err'''.
== GetAruid ==
No input. Returns an output u64 '''Aruid''' and an output u32 '''Err'''.
== ReadNextBlock ==
Takes a type-0x6 output buffer. Returns an output u32 '''Err'''.
=== NVHOST_IOCTL_CTRL_SYNCPT_INCR ===
== GetNextBlockSize ==
Unofficial name.
No input. Returns an output u64 '''Size''' and an output u32 '''Err'''.
=== NVHOST_IOCTL_CTRL_SYNCPT_WAIT ===
== ReadNextBlock2 ==
Unofficial name.
Takes a type-0x6 output buffer and two input u64s '''Size''' and '''Offset'''. Returns an output u64 '''OutSize''' and an output u32 '''Err'''.
= nvdbg:d =
This is "nns::nvdrv::INvDrvDebugSvcServices". This was added with [10.0.0+].
This service has no commands.
= 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 all known ioctls.
=== NVHOST_IOCTL_CTRL_SYNCPT_WAITEX ===
== /dev/nvhost-ctrl ==
{| class="wikitable" border="1"
! Value || Direction || Size || Description
|-
| 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 || [[#NVHOST_IOCTL_CTRL_MODULE_REGRDWR]]
|-
| 0xC0100019 || Inout || 16 || [[#NVHOST_IOCTL_CTRL_SYNCPT_WAITEX]]
|-
| 0xC008001A || Inout || 8 || [[#NVHOST_IOCTL_CTRL_SYNCPT_READ_MAX]]
|-
| 0xC183001B || Inout || 387 || [[#NVHOST_IOCTL_CTRL_GET_CONFIG]]
|-
| 0xC004001C || Inout || 4 || [[#NVHOST_IOCTL_CTRL_SYNCPT_CLEAR_EVENT_WAIT]]
|-
| 0xC010001D || Inout || 16 || [[#NVHOST_IOCTL_CTRL_SYNCPT_WAIT_EVENT]]
|-
| 0xC010001E || Inout || 16 || [[#NVHOST_IOCTL_CTRL_SYNCPT_WAIT_EVENT_EX]]
|-
| 0xC004001F || Inout || 4 || [[#NVHOST_IOCTL_CTRL_SYNCPT_ALLOC_EVENT]]
|-
| 0xC0040020 || Inout || 4 || [[#NVHOST_IOCTL_CTRL_SYNCPT_FREE_EVENT]]
|-
| 0x40080021 || In || 8 || [[#NVHOST_IOCTL_CTRL_SYNCPT_FREE_EVENT_BATCH]]
|-
| 0xC0040022 || Inout || 4 || [[#NVHOST_IOCTL_CTRL_SYNCPT_GET_SHIFT]]
|}
=== NVHOST_IOCTL_CTRL_SYNCPT_READ ===
=== NVHOST_IOCTL_CTRL_SYNCPT_READ_MAX ===
Identical to Linux driver.
Identical to Linux driver.
};
};
=== NVHOST_IOCTL_CTRL_GET_CONFIG ===
=== NVHOST_IOCTL_CTRL_SYNCPT_INCR ===
Identical to Linux driver.
struct {
struct {
__in char domain_str[0x41]; // "nv"
__in u32 id;
};
};
=== NVHOST_IOCTL_CTRL_SYNCPT_CLEAR_EVENT_WAIT ===
=== NVHOST_IOCTL_CTRL_SYNCPT_WAIT ===
Identical to Linux driver.
struct {
struct {
__in u32 event_slot; // ranges from 0x00 to 0x3F
__in u32 id;
__in u32 thresh;
__in s32 timeout;
};
};
=== NVHOST_IOCTL_CTRL_SYNCPT_EVENT_WAIT ===
=== NVHOST_IOCTL_CTRL_MODULE_MUTEX ===
Identical to Linux driver.
struct {
struct {
__in u32 syncpt_id;
__in u32 id;
__in u32 threshold;
__in u32 lock; // 0=unlock, 1=lock
};
};
=== NVHOST_IOCTL_CTRL_SYNCPT_EVENT_WAIT_ASYNC ===
=== NVHOST_IOCTL_CTRL_MODULE_REGRDWR ===
Identical to Linux driver. Uses 32-bit version and doesn't work.
struct {
struct {
__in u32 syncpt_id;
__in u32 id;
__in u32 threshold;
__in u32 num_offsets;
__in u32 timeout;
__in u32 block_size;
__in u32 offsets;
__in u32 values;
__in u32 write;
};
};
=== NVHOST_IOCTL_CTRL_SYNCPT_REGISTER_EVENT ===
=== NVHOST_IOCTL_CTRL_SYNCPT_WAITEX ===
Identical to Linux driver.
struct {
struct {
__in u32 event_slot; // ranges from 0x00 to 0x3F
__in u32 id;
__in u32 thresh;
__in s32 timeout;
__out u32 value;
};
};
=== NVHOST_IOCTL_CTRL_SYNCPT_UNREGISTER_EVENT ===
=== NVHOST_IOCTL_CTRL_SYNCPT_READ_MAX ===
Identical to Linux driver.
struct {
struct {
__in u32 event_slot; // ranges from 0x00 to 0x3F
__in u32 id;
__out u32 value;
};
};
=== NVHOST_IOCTL_CTRL_SYNCPT_FREE_EVENTS ===
=== NVHOST_IOCTL_CTRL_GET_CONFIG ===
Returns configured settings. Not available in production mode.
struct {
struct {
__in u64 events; // 64-bit bitfield where each bit represents one event
__in char name[0x41]; // "nv"
__in char key[0x41];
__out char value[0x101];
};
};
=== NVHOST_IOCTL_CTRL_GET_MAX_EVENT_FIFO_CHANNEL ===
=== NVHOST_IOCTL_CTRL_SYNCPT_CLEAR_EVENT_WAIT ===
Clears the wait signal of a syncpt event.
struct {
struct {
__in u32 event_slot; // 0x00 to 0x3F
};
};
== /dev/nvmap ==
=== NVHOST_IOCTL_CTRL_SYNCPT_WAIT_EVENT ===
{| class="wikitable" border="1"
Waits on a syncpt using events. If waiting fails, returns error code 0x05 (Timeout) and sets '''value''' to ('''event_slot''' | (('''syncpt_id''' & 0xFFF) << 16) | ('''is_valid''' << 28)).
! Value || Direction || Size || Description
|-
struct {
| 0xC0080101 || Inout || 8 || [[#NVMAP_IOC_CREATE]]
__in u32 id;
|-
__in u32 thresh;
__in s32 timeout;
__out u32 value;
};
=== NVHOST_IOCTL_CTRL_SYNCPT_WAIT_EVENT_EX ===
Waits on a syncpt using a specific event. If waiting fails, returns error code 0x05 (Timeout) and sets '''value''' to ('''event_slot''' | ('''syncpt_id''' << 4)).
struct {
__in u32 id;
__in u32 thresh;
__in s32 timeout;
__inout u32 value; // in=event_slot; out=syncpt_value
};
=== NVHOST_IOCTL_CTRL_SYNCPT_ALLOC_EVENT ===
Allocates a new syncpt event.
struct {
__in u32 event_slot; // 0x00 to 0x3F
};
=== NVHOST_IOCTL_CTRL_SYNCPT_FREE_EVENT ===
Frees an existing syncpt event.
struct {
__in u32 event_slot; // 0x00 to 0x3F
};
=== NVHOST_IOCTL_CTRL_SYNCPT_FREE_EVENT_BATCH ===
Frees multiple syncpt events.
struct {
__in u64 event_slot_mask; // 64-bit bitfield where each bit represents one event
};
=== NVHOST_IOCTL_CTRL_SYNCPT_GET_SHIFT ===
Returns the syncpt shift value.
struct {
__out u32 syncpt_shift; // 0x00 (FIFO disabled) or 0x60 (FIFO enabled)
};
== /dev/nvmap ==
{| class="wikitable" border="1"
! Value || Direction || Size || Description
|-
| 0xC0080101 || Inout || 8 || [[#NVMAP_IOC_CREATE]]
|-
| 0x00000102 || - || 0 || [[#NVMAP_IOC_CLAIM]]
| 0x00000102 || - || 0 || [[#NVMAP_IOC_CLAIM]]
|-
|-
__in u32 heapmask;
__in u32 heapmask;
__in u32 flags; // (0=read-only, 1=read-write)
__in u32 flags; // (0=read-only, 1=read-write)
__inout u32 align;
__in u8 kind;
__in u8 kind;
u8 pad[7];
u8 pad[7];
__in u64 addr;
};
};
__in u32 handle;
__in u32 handle;
u32 pad;
u32 pad;
__out u64 address;
__out u64 address; // 0 if the handle wasn't yet freed
__out u32 size;
__out u32 size;
__out u32 flags; // 1=NOT_FREED_YET
__out u32 flags; // 1=WAS_UNCACHED (if flags bit 1 was set when NVMAP_IOC_ALLOC was called)
};
};
| 0xC0040220 || Inout || 4 || NVDISP_CTRL_SUSPEND
| 0xC0040220 || Inout || 4 || NVDISP_CTRL_SUSPEND
|-
|-
| 0x80010224 || Out || 1 || [11.0.0+]
| 0x80010224 || Out || 1 || [11.0.0+] NVDISP_CTRL_IS_DISPLAY_OLED
|}
|}
| 0xC4C80203 || In || 1224 || NVDISP_FLIP
| 0xC4C80203 || In || 1224 || NVDISP_FLIP
|-
|-
| 0x80380204 || Out || 56 || NVDISP_GET_MODE
| 0x80380204 || Out || 56 || [[#NVDISP_GET_MODE]]
|-
|-
| 0x40380205 || Out || 56 || NVDISP_SET_MODE
| 0x40380205 || In || 56 || [[#NVDISP_SET_MODE]]
|-
|-
| 0x430C0206 || In || 780 || NVDISP_SET_LUT
| 0x430C0206 || In || 780 || NVDISP_SET_LUT
| 0x80040209 || Out || 4 || NVDISP_GET_HEAD_STATUS
| 0x80040209 || Out || 4 || NVDISP_GET_HEAD_STATUS
|-
|-
| 0xC038020A || Inout || 56 || NVDISP_VALIDATE_MODE
| 0xC038020A || Inout || 56 || [[#NVDISP_VALIDATE_MODE]]
|-
|-
| 0x4018020B || In || 24 || NVDISP_SET_CSC
| 0x4018020B || In || 24 || NVDISP_SET_CSC
| 0xEBFC0215 || Inout || 11260 || NVDISP_GET_MODE_DB
| 0xEBFC0215 || Inout || 11260 || NVDISP_GET_MODE_DB
|-
|-
| 0xC003021A || Inout || 3 || NVDISP_PANEL_GET_VENDOR_ID
| 0xC003021A || Inout || 3 || [[#NVDISP_PANEL_GET_VENDOR_ID]]
|-
|-
| 0x803C021B || Out || 60 || NVDISP_GET_MODE2
| 0x803C021B || Out || 60 || NVDISP_GET_MODE2
| 0x80080221 || Out || 8 || [10.0.0+] [[#NVDISP_GET_BACKLIGHT_RANGE]]
| 0x80080221 || Out || 8 || [10.0.0+] [[#NVDISP_GET_BACKLIGHT_RANGE]]
|-
|-
| 0x40040222 || In || 4 || [10.0.0+] [[#NVDISP_SET_BACKLIGHT]]
| 0x40040222 || In || 4 || [10.0.0+] [[#NVDISP_SET_BACKLIGHT_RANGE_MAX]]
|-
|-
| 0x40040223 || In || 4 || [11.0.0+]
| 0x40040223 || In || 4 || [11.0.0+] [[#NVDISP_SET_BACKLIGHT_RANGE_MIN]]
|-
|-
| 0x401C0225 || In || 28 || [11.0.0+] [[#NVDISP_SEND_PANEL_MSG]]
| 0x401C0225 || In || 28 || [11.0.0+] [[#NVDISP_SEND_PANEL_MSG]]
| 0xC01C0226 || Inout || 28 || [11.0.0+] [[#NVDISP_GET_PANEL_DATA]]
| 0xC01C0226 || Inout || 28 || [11.0.0+] [[#NVDISP_GET_PANEL_DATA]]
|}
|}
=== NVDISP_GET_MODE ===
Identical to Linux driver.
struct {
__out u32 hActive;
__out u32 vActive;
__out u32 hSyncWidth;
__out u32 vSyncWidth;
__out u32 hFrontPorch;
__out u32 vFrontPorch;
__out u32 hBackPorch;
__out u32 vBackPorch;
__out u32 hRefToSync;
__out u32 vRefToSync;
__out u32 pclkKHz;
__out u32 bitsPerPixel; // Always 0
__out u32 vmode; // Always 0
};
=== NVDISP_SET_MODE ===
Identical to Linux driver.
struct {
__in u32 hActive;
__in u32 vActive;
__in u32 hSyncWidth;
__in u32 vSyncWidth;
__in u32 hFrontPorch;
__in u32 vFrontPorch;
__in u32 hBackPorch;
__in u32 vBackPorch;
__in u32 hRefToSync;
__in u32 vRefToSync;
__in u32 pclkKHz;
__in u32 bitsPerPixel;
__in u32 vmode;
};
=== NVDISP_VALIDATE_MODE ===
Identical to Linux driver.
struct {
__inout u32 hActive;
__inout u32 vActive;
__inout u32 hSyncWidth;
__inout u32 vSyncWidth;
__inout u32 hFrontPorch;
__inout u32 vFrontPorch;
__inout u32 hBackPorch;
__inout u32 vBackPorch;
__inout u32 hRefToSync;
__inout u32 vRefToSync;
__inout u32 pclkKHz;
__inout u32 bitsPerPixel;
__inout u32 vmode;
};
=== NVDISP_PANEL_GET_VENDOR_ID ===
Returns display panel's informations.
struct {
__out u8 vendor; //0x10 - JDI, 0x20 - InnoLux, 0x30 - AUO, 0x40 - Sharp, 0x50 - Samsung
__out u8 model;
__out u8 board; //0xF - 6.2", 0x10 - 5.5", 0x20 - 7.0". JDI panels have nonstandard values
};
=== NVDISP_GET_BACKLIGHT_RANGE ===
=== NVDISP_GET_BACKLIGHT_RANGE ===
};
};
=== NVDISP_SET_BACKLIGHT ===
=== NVDISP_SET_BACKLIGHT_RANGE_MAX ===
Sets the value for the intensity of the display's backlight.
Sets the maximum value for the intensity of the display's backlight.
struct {
__in u32 max;
};
=== NVDISP_SET_BACKLIGHT_RANGE_MIN ===
Sets the minimum value for the intensity of the display's backlight.
struct {
struct {
__in u32 val;
__in u32 min;
};
};
struct {
struct {
__in u32 fence_id;
__in u32 fence_id;
__in u32 fence_thresh;
__in u32 fence_value;
__in u32 swap_interval;
__in u32 swap_interval;
};
};
| 0x40284109 || In || 40 || [[#NVGPU_AS_IOCTL_ALLOC_AS_EX]]
| 0x40284109 || In || 40 || [[#NVGPU_AS_IOCTL_ALLOC_AS_EX]]
|-
|-
| 0xC038410A || Inout || 56 || [[#NVGPU_AS_IOCTL_MODIFY]]
| 0xC038410A || Inout || 56 || [[#NVGPU_AS_IOCTL_MAP_BUFFER_EX2]]
|-
|-
| 0xC0??4114 || Inout || Variable || [[#NVGPU_AS_IOCTL_REMAP]]
| 0xC0??4114 || Inout || Variable || [[#NVGPU_AS_IOCTL_REMAP]]
=== NVGPU_AS_IOCTL_MAP_BUFFER ===
=== NVGPU_AS_IOCTL_MAP_BUFFER ===
Maps a memory region in the device address space. Identical to Linux driver pretty much.
Maps a memory region in the device address space.
Unaligned size will cause a [[#Panic]].
On success, the mapped memory region is granted the [[SVC#MemoryAttribute|DeviceShared]] attribute.
On success, the mapped memory region is granted the [[SVC#MemoryAttribute|DeviceShared]] attribute.
struct {
struct {
__in u32 flags; // bit0: fixed_offset, bit2: cacheable
__in u32 flags; // bit0: fixed_offset, bit2: cacheable
u32 reserved;
u32 reserved0;
__in u32 dmabuf_fd; // nvmap handle
__in u32 mem_id; // nvmap handle
u32 reserved1;
union {
union {
__out u64 offset;
__out u64 offset;
struct {
struct {
__in u32 flags; // bit0: fixed_offset, bit2: cacheable
__in u32 flags; // bit0: fixed_offset, bit2: cacheable
__inout u32 kind; // -1 is default
__in u32 dmabuf_fd; // nvmap handle
__in u32 mem_id; // nvmap handle
u32 reserved;
__in u64 buffer_offset;
__in u64 buffer_offset;
__in u64 mapping_size;
__in u64 mapping_size;
union {
__out u64 offset;
__in u64 align;
};
};
};
=== NVGPU_AS_IOCTL_GET_VA_REGIONS ===
=== NVGPU_AS_IOCTL_GET_VA_REGIONS ===
Nintendo's custom implementation to get rid of pointer in struct.
Nintendo's custom implementation to get rid of pointer in struct.
Uses [[#Ioctl3|Ioctl3]].
struct va_region {
struct va_region {
};
};
=== NVGPU_AS_IOCTL_MODIFY ===
=== NVGPU_AS_IOCTL_MAP_BUFFER_EX2 ===
Maps a memory region in the device address space with extra params.
Unaligned size will cause a [[#Panic]].
On success, the mapped memory region is granted the [[SVC#MemoryAttribute|DeviceShared]] attribute.
struct {
__in u32 flags; // bit0: fixed_offset, bit2: cacheable
__in u32 flags; // bit0: fixed_offset, bit2: cacheable
__inout u32 kind; // -1 is default
__in u32 dmabuf_fd; // nvmap handle
__in u32 mem_id; // nvmap handle
u32 reserved0;
__in u64 buffer_offset;
__in u64 buffer_offset;
__in u64 mapping_size;
__in u64 mapping_size;
union {
__in u64 unk0;
__out u64 offset;
__in u32 unk1;
__in u64 align;
u32 reserved;
};
__in u64 vma_addr;
__in u32 pages;
u32 reserved1;
};
};
=== NVGPU_AS_IOCTL_REMAP ===
=== NVGPU_AS_IOCTL_REMAP ===
Nintendo's custom implementation of address space remapping.
Nintendo's custom implementation of address space remapping for sparse pages.
struct remap_op {
struct remap_op {
__in u16 flags; // 0 or 4
__in u16 flags; // bit2: cacheable
__in u16 kind;
__in u16 kind;
__in u32 mem_handle;
__in u32 mem_handle;
__in u32 mem_offset_in_pages;
__in u32 mem_offset_in_pages;
__in u32 virt_offset_in_pages; // (alloc_space_offset >> 0x10)
__in u32 virt_offset_in_pages; // (alloc_space_offset >> 0x10)
__in u32 num_pages; // alloc_space_pages
__in u32 num_pages; // alloc_space_pages
};
};
| 0xC018441A || Inout || 24 || NVGPU_DBG_GPU_IOCTL_LAZY_ALLOC_RESERVED_PA
| 0xC018441A || Inout || 24 || NVGPU_DBG_GPU_IOCTL_LAZY_ALLOC_RESERVED_PA
|-
|-
| 0xC020441B || Inout || 32 || [11.0.0+]
| 0xC020441B || Inout || 32 || [11.0.0+] NVGPU_DBG_GPU_IOCTL_LAZY_ALLOC_RESERVED_PA_EX
|-
| 0xC084441C || Inout || 132 || [11.0.0+] NVGPU_DBG_GPU_IOCTL_GET_SETTINGS
|-
| 0xC018441D || Inout || 24 || [11.0.0+] NVGPU_DBG_GPU_IOCTL_GET_SERIAL_NUMBER
|-
|-
| 0xC020441E || Inout || 32 || [11.0.0+]
| 0xC020441E || Inout || 32 || [11.0.0+] NVGPU_DBG_GPU_IOCTL_GET_GPU_VA_RANGE_PAGES
|}
|}
};
};
= Channels =
Channels are a concept for NVIDIA hardware blocks that share a common interface.
Channels are a concept for NVIDIA hardware blocks that share a common interface.
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
| /dev/nvhost-display || Display
| /dev/nvhost-display || Display
|-
| /dev/nvhost-tsec || TSEC
|}
|}
== Channel Ioctls ==
== Ioctls ==
{| class="wikitable" border="1"
{| class="wikitable" border="1"
! Value || Size || Description
! Value || Size || Description
u32 syncpt_id;
u32 syncpt_id;
u32 syncpt_incrs;
u32 syncpt_incrs;
u32 reserved[3];
u32 id;
};
};
__in struct reloc_shift reloc_shifts[]; // depends on num_relocs
__in struct reloc_shift reloc_shifts[]; // depends on num_relocs
__in struct syncpt_incr syncpt_incrs[]; // depends on num_syncpt_incrs
__in struct syncpt_incr syncpt_incrs[]; // depends on num_syncpt_incrs
__out struct fence fences[]; // depends on num_fences
__out u32 fence_thresholds[]; // depends on num_fences
};
};
struct {
struct {
__in u32 num_entries;
__in u32 num_entries;
__in u32 flags;
__in u32 flags; // bit0: vpr_enabled
};
};
struct fence {
struct fence {
u32 id;
u32 id;
u32 thresh;
u32 value;
};
};
struct gpfifo_entry {
struct gpfifo_entry {
u32 entry0; // gpu_iova_lo
u32 entry1; // gpu_iova_hi | (allow_flush << 8) | (is_push_buf << 9) | (size << 10) | (sync << 31)
};
};
__in u64 gpfifo; // (ignored) pointer to gpfifo fence structs
__in u64 gpfifo; // (ignored) pointer to gpfifo fence structs
__in u32 num_entries; // number of fence objects being submitted
__in u32 num_entries; // number of fence objects being submitted
__in u32 flags;
union {
__out u32 detailed_error;
__in u32 flags; // bit0: fence_wait, bit1: fence_get, bit2: hw_format, bit3: sync_fence, bit4: suppress_wfi, bit5: skip_buffer_refcounting
};
__inout struct fence fence_out; // returned new fence object for others to wait on
__inout struct fence fence_out; // returned new fence object for others to wait on
__in struct gpfifo_entry entries[]; // depends on num_entries
__in struct gpfifo_entry entries[]; // depends on num_entries
struct {
struct {
__out u32 error_info[32]; // first word is an error code (0=no_error, 1=gr_error, 2=gr_error, 3=invalid, 4=invalid)
__out u32 type; // Error type (0=no_error, 1=mmu_error, 2=gr_error, 3=pbdma_error, 4=timeout)
};
__out u32 info[31]; // Infor depends on the error type
};
==== GR Error Code Format ====
When <code>type == 2</code> (GR Error), the returned data is formatted as follows:
struct {
struct {
__out u64 timestamp; // fetched straight from armGetSystemTick
__out u32 type; // 2=gr_error
__out u32 info32; // error code
__out u32 intr_value; // Interrupt bits
__out u16 info16; // additional error info
__out u32 addr; // Register address (in bytes)
__out u16 status; // always 0xFFFF
__out u32 data_hi; // Data high 32 bits
};
__out u32 data_lo; // Data low 32 bits
__out u32 class_num; // GPU class number (e.g., 0xb197 for MAXWELL_B)
};
=== NVGPU_IOCTL_CHANNEL_ALLOC_GPFIFO_EX ===
{| class="wikitable"
|+ GR Error Interrupt Bits
|-
! Bit(s)
! Description
|-
| 0
| GR_INTR_NOTIFY
|-
| 1
| GR_INTR_SEMAPHORE
|-
| 2
| unknown
|-
| 3
| unknown
|-
| 4
| GR_INTR_ILLEGAL_METHOD
|-
| 5
| GR_INTR_ILLEGAL_CLASS
|-
| 6
| GR_INTR_ILLEGAL_NOTIFY
|-
| 7
| unknown
|-
| 8
| GR_INTR_FIRMWARE_METHOD
|-
| 9–18
| unknown
|-
| 19
| GR_INTR_FECS_ERROR
|-
| 20
| GR_INTR_CLASS_ERROR
|-
| 21
| GR_INTR_EXCEPTION
|-
| 22–31
| unknown
|}
struct fence {
=== NVGPU_IOCTL_CHANNEL_GET_ERROR_NOTIFICATION ===
u32 id;
Returns the current error notification caught by the error notifier. Exclusive to the Switch.
u32 thresh;
struct {
__out u64 timestamp; // fetched straight from armGetSystemTick
__out u32 info32; // error code
__out u16 info16; // additional error info
__out u16 status; // always 0xFFFF
};
=== NVGPU_IOCTL_CHANNEL_ALLOC_GPFIFO_EX ===
Allocates gpfifo entries with additional parameters. Exclusive to the Switch.
struct fence {
u32 id;
u32 value;
};
};
__in u32 num_entries;
__in u32 num_entries;
__in u32 num_jobs;
__in u32 num_jobs;
__in u32 flags;
__in u32 flags; // bit0: vpr_enabled
__out struct fence fence_out; // returned new fence object for others to wait on
__out struct fence fence_out; // returned new fence object for others to wait on
__in u32 reserved[3]; // ignored
__in u32 reserved[3]; // ignored
};
};
= nvmemp =
= NvDrvPermission =
This is "nv::MemoryProfiler::IMemoryProfiler".
This is "nns::nvdrv::NvDrvPermission".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
! Bits
! Name
! Description
|-
| 0
| Gpu
| Can access [[#Channels|/dev/nvhost-gpu]], [[#/dev/nvhost-ctrl-gpu|/dev/nvhost-ctrl-gpu]] and [[#/dev/nvhost-as-gpu|/dev/nvhost-as-gpu]].
|-
|-
| 1
| GpuDebug
| Can access [[#/dev/nvhost-dbg-gpu|/dev/nvhost-dbg-gpu]] and [[#/dev/nvhost-prof-gpu|/dev/nvhost-prof-gpu]].
|-
|-
| 0 || Open
| 2
| GpuSchedule
| Can access [[#/dev/nvsched-ctrl|/dev/nvsched-ctrl]].
|-
|-
| 1 || GetPid
| 3
|}
| VIC
| Can access [[#Channels|/dev/nvhost-vic]].
|-
|-
| 4
| VideoEncoder
| Can access [[#Channels|/dev/nvhost-msenc]].
|-
|-
| 0 || [[#OpenDebugFS]]
| 5
| VideoDecoder
| Can access [[#Channels|/dev/nvhost-nvdec]].
|-
|-
| 1 || [[#CloseDebugFS]]
| 6
| TSEC
| Can access [[#Channels|/dev/nvhost-tsec]].
|-
|-
| 2 || [[#GetDebugFSKeys]]
| 7
| JPEG
| Can access [[#Channels|/dev/nvhost-nvjpg]].
|-
|-
| 3 || GetDebugFSValue
| 8
| Display
| 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]].
|-
|-
| 4 || SetDebugFSValue
| 9
|}
| ImportMemory
| Can duplicate [[#/dev/nvmap|nvmap]] handles from other processes with [[#NVMAP_IOC_FROM_ID|NVMAP_IOC_FROM_ID]].
|-
|-
| 10
| NoCheckedAruid
| Can use [[#SetAruidWithoutCheck|SetAruidWithoutCheck]].
|-
|-
| 0 || Initialize
| 11
|
| Can use [[#SetGraphicsFirmwareMemoryMarginEnabled|SetGraphicsFirmwareMemoryMarginEnabled]].
|-
|-
| 1 || GetEventHandle
| 12
|
| Can duplicate exported [[#/dev/nvmap|nvmap]] handles from other processes with [[#NVMAP_IOC_FROM_ID|NVMAP_IOC_FROM_ID]].
|-
|-
| 2 || ControlNotification
| 13
|
| Can use the GPU virtual address range 0xC0000 to 0x580000 instead of 0x0 to 0xC0000.
|-
|-
| 3 || SetNotificationPerm
| 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]].
|-
|-
| 4 || SetCoreDumpPerm
| 15
|-
|
| 5 || [1.0.0-4.1.0] GetAruid
| Can use the virtual address ranges 0x0 to 0x100000000 (GPU) and 0x0 to 0xE0000000 (non-GPU) instead of 0x100000000 to 0x11FA50000 (GPU) and 0xE0000000 to 0xFFFE0000 (non-GPU).
|}
|}
= nvgem:cd =
= NvError =
This is "nv::gemcoredump::INvGemCoreDump".
This is "nns::nvdrv::NvError".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
! Cmd || Name
! Value || Name
|-
|-
| 0 || Initialize
| 0x0 || Success
|-
|-
| 1 || GetAruid
| 0x1 || NotImplemented
|-
|-
| 2 || [1.0.0-8.1.0] ReadNextBlock
| 0x2 || NotSupported
|-
|-
| 3 || [8.0.0+]
| 0x3 || NotInitialized
|-
|-
| 4 || [8.0.0+]
| 0x4 || BadParameter
|-
|-
| 0x5 || Timeout
|-
|-
| 0x0 || NvError_Success
| 0x6 || InsufficientMemory
|-
|-
| 0x1 || NvError_NotImplemented
| 0x7 || ReadOnlyAttribute
|-
|-
| 0x2 || NvError_NotSupported
| 0x8 || InvalidState
|-
|-
| 0x3 || NvError_NotInitialized
| 0x9 || InvalidAddress
|-
|-
| 0x4 || NvError_BadParameter
| 0xA || InvalidSize
|-
|-
| 0x5 || NvError_Timeout
| 0xB || BadValue
|-
|-
| 0x6 || NvError_InsufficientMemory
| 0xD || AlreadyAllocated
|-
|-
| 0x7 || NvError_ReadOnlyAttribute
| 0xE || Busy
|-
|-
| 0x8 || NvError_InvalidState
| 0xF || ResourceError
|-
|-
| 0x9 || NvError_InvalidAddress
| 0x10 || CountMismatch
|-
|-
| 0xA || NvError_InvalidSize
| 0x11 || OverFlow
|-
|-
| 0xB || NvError_BadValue
| 0x1000 || InsufficientTransferMemory
|-
|-
| 0xD || NvError_AlreadyAllocated
| 0x10000 || InsufficientVideoMemory
|-
|-
| 0xE || NvError_Busy
| 0x10001 || BadSurfaceColorScheme
|-
|-
| 0xF || NvError_ResourceError
| 0x10002 || InvalidSurface
|-
|-
| 0x10 || NvError_CountMismatch
| 0x10003 || SurfaceNotSupported
|-
|-
| 0x11 || NvError_OverFlow
| 0x20000 || DispInitFailed
|-
|-
| 0x1000 || NvError_InsufficientTransferMemory
| 0x20001 || DispAlreadyAttached
|-
|-
| 0x10000 || NvError_InsufficientVideoMemory
| 0x20002 || DispTooManyDisplays
|-
|-
| 0x10001 || NvError_BadSurfaceColorScheme
| 0x20003 || DispNoDisplaysAttached
|-
|-
| 0x10002 || NvError_InvalidSurface
| 0x20004 || DispModeNotSupported
|-
|-
| 0x10003 || NvError_SurfaceNotSupported
| 0x20005 || DispNotFound
|-
|-
| 0x20000 || NvError_DispInitFailed
| 0x20006 || DispAttachDissallowed
|-
|-
| 0x20001 || NvError_DispAlreadyAttached
| 0x20007 || DispTypeNotSupported
|-
|-
| 0x20002 || NvError_DispTooManyDisplays
| 0x20008 || DispAuthenticationFailed
|-
|-
| 0x20003 || NvError_DispNoDisplaysAttached
| 0x20009 || DispNotAttached
|-
|-
| 0x20004 || NvError_DispModeNotSupported
| 0x2000A || DispSamePwrState
|-
|-
| 0x20005 || NvError_DispNotFound
| 0x2000B || DispEdidFailure
|-
|-
| 0x20006 || NvError_DispAttachDissallowed
| 0x2000C || DispDsiReadAckError
|-
|-
| 0x20007 || NvError_DispTypeNotSupported
| 0x2000D || DispDsiReadInvalidResp
|-
|-
| 0x20008 || NvError_DispAuthenticationFailed
| 0x30000 || FileWriteFailed
|-
|-
| 0x20009 || NvError_DispNotAttached
| 0x30001 || FileReadFailed
|-
|-
| 0x2000A || NvError_DispSamePwrState
| 0x30002 || EndOfFile
|-
|-
| 0x2000B || NvError_DispEdidFailure
| 0x30003 || FileOperationFailed
|-
|-
| 0x2000C || NvError_DispDsiReadAckError
| 0x30004 || DirOperationFailed
|-
|-
| 0x2000D || NvError_DispDsiReadInvalidResp
| 0x30005 || EndOfDirList
|-
|-
| 0x30000 || NvError_FileWriteFailed
| 0x30006 || ConfigVarNotFound
|-
|-
| 0x30001 || NvError_FileReadFailed
| 0x30007 || InvalidConfigVar
|-
|-
| 0x30002 || NvError_EndOfFile
| 0x30008 || LibraryNotFound
|-
|-
| 0x30003 || NvError_FileOperationFailed
| 0x30009 || SymbolNotFound
|-
|-
| 0x30004 || NvError_DirOperationFailed
| 0x3000A || MemoryMapFailed
|-
|-
| 0x30005 || NvError_EndOfDirList
| 0x3000F || IoctlFailed
|-
|-
| 0x30006 || NvError_ConfigVarNotFound
| 0x30010 || AccessDenied
|-
|-
| 0x30007 || NvError_InvalidConfigVar
| 0x30011 || DeviceNotFound
|-
|-
| 0x30008 || NvError_LibraryNotFound
| 0x30012 || KernelDriverNotFound
|-
|-
| 0x30009 || NvError_SymbolNotFound
| 0x30013 || FileNotFound
|-
|-
| 0x3000A || NvError_MemoryMapFailed
| 0x30014 || PathAlreadyExists
|-
|-
| 0x3000F || NvError_IoctlFailed
| 0xA000E || ModuleNotPresent
|}
= NvDrvStatus =
This is "nns::nvdrv::NvDrvStatus".
{| class="wikitable" border="1"
|-
|-
! Offset
! Size
! Description
|-
|-
| 0x30011 || NvError_DeviceNotFound
| 0x0
| 0x4
| FreeSize
|-
|-
| 0x30012 || NvError_KernelDriverNotFound
| 0x4
| 0x4
| AllocatableSize
|-
|-
| 0x30013 || NvError_FileNotFound
| 0x8
| 0x4
| MinimumFreeSize
|-
|-
| 0x30014 || NvError_PathAlreadyExists
| 0xC
| 0x4
| MinimumAllocatableSize
|-
|-
| 0xA000E || NvError_ModuleNotPresent
| 0x10
| 0x10
| Reserved
|}
|}
= Panic =
= Notes =
In some cases, a panic may occur. NV forces a crash by doing:
In some cases, a panic may occur. NV forces a crash by doing:
(void *)0 = 0xCAFE;
(void *)0 = 0xCAFE;
End result is that the system hangs with a white-screen.
End result is that the system hangs with a white-screen.
When the gpfifo data in the gpu_va buffers specified by the submitted gpfifo entries is invalid(?), eventually the user-process will be force-terminated after using the submit-gpfifo ioctl. It's unknown how exactly this is done.
When the gpfifo data in the gpu_va buffers specified by the submitted gpfifo entries is invalid(?), eventually the user-process will be force-terminated after using the submit-gpfifo ioctl. It's unknown how exactly this is done.
GPU rendering (GPFIFO) is only used by applets/Applications. All sysmodules doing any gfx-display uses software rendering. During system-boot, GPU GPFIFO is not used until the applets are launched.
[[Category:Services]]
[[Category:Services]]