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no edit summary
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"
| 6 || [[#GetStatus]]
| 6 || [[#GetStatus]]
|-
|-
| 7 || [[#SetAruid]]
| 7 || [[#SetAruidForTest]]
|-
|-
| 8 || [[#SetAruidByPID]]
| 8 || [[#SetAruid]]
|-
|-
| 9 || [[#DumpGraphicsMemoryInfo]]
| 9 || [[#DumpGraphicsMemoryInfo]]
| 12 || [3.0.0+] [[#Ioctl3]]
| 12 || [3.0.0+] [[#Ioctl3]]
|-
|-
| 13 || [3.0.0+] [[#FinishInitialize]]
| 13 || [3.0.0+] [[#SetGraphicsFirmwareMemoryMarginEnabled]]
|}
|}
Takes no input. Returns 0x10-bytes and an output u32 ('''error_code''').
Takes no input. Returns 0x10-bytes and an output u32 ('''error_code''').
== SetAruid ==
== 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''').
== SetAruidByPID ==
== 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. Does nothing.
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 ==
Cmdhdr_word1 is 0x100B instead of 0xC0B.
Cmdhdr_word1 is 0x100B instead of 0xC0B.
== FinishInitialize ==
== SetGraphicsFirmwareMemoryMarginEnabled ==
Takes an input u64. No output.
Takes an input u64. No output.
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 =
__in u32 handle;
__in u32 handle;
u32 pad;
u32 pad;
__out u64 refcount;
__out u64 address;
__out u32 size;
__out u32 size;
__out u32 flags; // 1=NOT_FREED_YET
__out u32 flags; // 1=NOT_FREED_YET
struct {
struct {
__in u32 fence_id;
__in u32 fence_id;
__in u32 fence_value;
__in u32 fence_thresh;
__in u32 swap_interval;
__in u32 swap_interval;
};
};
Maps a memory region in the device address space. Identical to Linux driver pretty much.
Maps a memory region in the device address space. Identical to Linux driver pretty much.
On success, the mapped memory region is locked by having [[SVC#MemoryState]] bit34 set.
On success, the mapped memory region is granted the [[SVC#MemoryAttribute|DeviceShared]] attribute.
struct {
struct {
Unaligned size will cause a [[#Panic]].
Unaligned size will cause a [[#Panic]].
On success, the mapped memory region is locked by having [[SVC#MemoryState]] bit34 set.
On success, the mapped memory region is granted the [[SVC#MemoryAttribute|DeviceShared]] attribute.
struct {
struct {
__in u32 flags; // passes 0
__in u32 flags; // passes 0
__in u32 reserved; // ignored; passes 0
__in u32 reserved; // ignored; passes 0
__in u64 unk0;
__in u64 va_range_start;
__in u64 unk1;
__in u64 va_range_end;
__in u64 unk2;
__in u64 va_range_split;
};
};
struct remap_entry {
struct remap_entry {
__in u16 flags; // 0 or 4
__in u16 flags; // 0 or 4
__in u16 kind;
__in u16 kind;
__in u32 nvmap_handle;
__in u32 nvmap_handle;
__in u32 reserved;
__in u32 map_offset;
__in u32 offset; // (alloc_space_offset >> 0x10)
__in u32 gpu_offset; // (alloc_space_offset >> 0x10)
__in u32 pages; // alloc_space_pages
__in u32 pages; // alloc_space_pages
};
};
=== NVGPU_GPU_IOCTL_GET_CPU_TIME_CORRELATION_INFO ===
=== NVGPU_GPU_IOCTL_GET_CPU_TIME_CORRELATION_INFO ===
Returns GPU/CPU timestamp pairs for correlation analysis. Identical to Linux driver.
Returns CPU/GPU timestamp pairs for correlation analysis. Identical to Linux driver.
struct time_correlation_sample {
struct time_correlation_sample {
u64 cpu_timestamp; // from CPU's CNTPCT_EL0 register
u64 cpu_timestamp; // from CPU's CNTPCT_EL0 register
u64 gpu_timestamp; // from GPU's PTIMER registers
u64 gpu_timestamp; // from GPU's PTIMER registers
};
};
! Value || Size || Description
! Value || Size || Description
|-
|-
| 0xC0??0001 || Variable || NVHOST_IOCTL_CHANNEL_SUBMIT
| 0xC0??0001 || Variable || [[#NVHOST_IOCTL_CHANNEL_SUBMIT]]
|-
|-
| 0xC0080002 || 8 || [[#NVHOST_IOCTL_CHANNEL_GET_SYNCPOINT]]
| 0xC0080002 || 8 || [[#NVHOST_IOCTL_CHANNEL_GET_SYNCPOINT]]
| 0xC0080023</br>([1.0.0-7.0.1] 0xC0080014) || 8 || [[#NVHOST_IOCTL_CHANNEL_GET_CLK_RATE]]
| 0xC0080023</br>([1.0.0-7.0.1] 0xC0080014) || 8 || [[#NVHOST_IOCTL_CHANNEL_GET_CLK_RATE]]
|-
|-
| 0xC0??0024 || Variable || NVHOST_IOCTL_CHANNEL_SUBMIT_EX
| 0xC0??0024 || Variable || [[#NVHOST_IOCTL_CHANNEL_SUBMIT_EX]]
|-
|-
| 0xC0??0025 || Variable || [[#NVHOST_IOCTL_CHANNEL_MAP_CMD_BUFFER_EX]]
| 0xC0??0025 || Variable || [[#NVHOST_IOCTL_CHANNEL_MAP_CMD_BUFFER_EX]]
| 0x80084715 || 8 || [[#NVGPU_IOCTL_CHANNEL_GET_USER_DATA]]
| 0x80084715 || 8 || [[#NVGPU_IOCTL_CHANNEL_GET_USER_DATA]]
|}
|}
=== NVHOST_IOCTL_CHANNEL_SUBMIT ===
Submits data to the channel.
struct cmdbuf {
u32 mem;
u32 offset;
u32 words;
};
struct reloc {
u32 cmdbuf_mem;
u32 cmdbuf_offset;
u32 target;
u32 target_offset;
};
struct reloc_shift {
u32 shift;
};
struct syncpt_incr {
u32 syncpt_id;
u32 syncpt_incrs;
};
struct fence {
u32 id;
u32 thresh;
};
struct {
__in u32 num_cmdbufs;
__in u32 num_relocs;
__in u32 num_syncpt_incrs;
__in u32 num_fences;
__in struct cmdbuf cmdbufs[]; // depends on num_cmdbufs
__in struct reloc relocs[]; // 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
__out struct fence fences[]; // depends on num_fences
};
=== NVHOST_IOCTL_CHANNEL_GET_SYNCPOINT ===
=== NVHOST_IOCTL_CHANNEL_GET_SYNCPOINT ===
__in u32 module_id;
__in u32 module_id;
};
};
=== NVHOST_IOCTL_CHANNEL_SUBMIT_EX ===
Same as [[#NVHOST_IOCTL_CHANNEL_SUBMIT|NVHOST_IOCTL_CHANNEL_SUBMIT]].
=== NVHOST_IOCTL_CHANNEL_MAP_CMD_BUFFER_EX ===
=== NVHOST_IOCTL_CHANNEL_MAP_CMD_BUFFER_EX ===
struct fence {
struct fence {
u32 syncpt_id;
u32 id;
u32 syncpt_value;
u32 thresh;
};
};
struct fence {
struct fence {
u32 id;
u32 thresh;
};
};