diff options
| author | Haren Myneni <haren@linux.ibm.com> | 2025-04-16 15:57:37 -0700 |
|---|---|---|
| committer | Madhavan Srinivasan <maddy@linux.ibm.com> | 2025-04-17 11:42:29 +0530 |
| commit | 43d869ac25f17923473a03dcf001af073b7c0a56 (patch) | |
| tree | 44c98f66c3ef4320f603c9ffc71dbe3a6a64f6df /Documentation/userspace-api/ioctl | |
| parent | ecc45d4f8ce8e1953f703b4d13d882f2e8ce689d (diff) | |
powerpc/pseries: Define papr_indices_io_block for papr-indices ioctls
To issue ibm,get-indices, ibm,set-dynamic-indicator and
ibm,get-dynamic-sensor-state in the user space, the RMO buffer is
allocated for the work area which is restricted under system
lockdown. So instead of user space execution, the kernel will
provide /dev/papr-indices interface to execute these RTAS calls.
The user space assigns data in papr_indices_io_block struct
depends on the specific HCALL and passes to the following ioctls:
PAPR_INDICES_IOC_GET: Use for ibm,get-indices. Returns a
get-indices handle fd to read data.
PAPR_DYNAMIC_SENSOR_IOC_GET: Use for ibm,get-dynamic-sensor-state.
Updates the sensor state in
papr_indices_io_block.dynamic_param.state
PAPR_DYNAMIC_INDICATOR_IOC_SET: Use for ibm,set-dynamic-indicator.
Sets the new state for the input
indicator.
Signed-off-by: Haren Myneni <haren@linux.ibm.com>
Tested-by: Sathvika Vasireddy <sv@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250416225743.596462-3-haren@linux.ibm.com
Diffstat (limited to 'Documentation/userspace-api/ioctl')
| -rw-r--r-- | Documentation/userspace-api/ioctl/ioctl-number.rst | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst index 7a1409ecc238..638dc4034483 100644 --- a/Documentation/userspace-api/ioctl/ioctl-number.rst +++ b/Documentation/userspace-api/ioctl/ioctl-number.rst @@ -366,6 +366,8 @@ Code Seq# Include File Comments <mailto:linuxppc-dev> 0xB2 01-02 arch/powerpc/include/uapi/asm/papr-sysparm.h powerpc/pseries system parameter API <mailto:linuxppc-dev> +0xB2 03-05 arch/powerpc/include/uapi/asm/papr-indices.h powerpc/pseries indices API + <mailto:linuxppc-dev> 0xB3 00 linux/mmc/ioctl.h 0xB4 00-0F linux/gpio.h <mailto:linux-gpio@vger.kernel.org> 0xB5 00-0F uapi/linux/rpmsg.h <mailto:linux-remoteproc@vger.kernel.org> |