On Fri, 24 Jan 2025, Vadim Pasternak wrote: > Add documentation for the new attributes: > - Request and response for access to protetced flashes: > "global_wp_request", "global_wp_response". > Only for systems equipped with BMC - grant can be provided only by > BMC in case its security policy allows to grant access. > - Request to unlock ASICs, which has been shutdown due-to ASIC thermal > event: "shutdown_unlock". > - Data processor Units (DPU) boot progress: "boot_progress". > - DPU reset causes: "reset_aux_pwr_or_reload", "reset_dpu_thermal", > "reset_from_main_board". > - Reset control for DPU components: "perst_rst", "phy_rst", "tpm_rst", > "usbphy_rst". > - DPU Unified Fabric Manager upgrade - "ufm_upgrade". > - Hardware Id of Data Process Unit board - "dpu_id". > > Reviewed-by: Michael Shych <michaelsh@xxxxxxxxxx> > Signed-off-by: Vadim Pasternak <vadimp@xxxxxxxxxx> > --- > .../ABI/stable/sysfs-driver-mlxreg-io | 96 +++++++++++++++++++ > 1 file changed, 96 insertions(+) > > diff --git a/Documentation/ABI/stable/sysfs-driver-mlxreg-io b/Documentation/ABI/stable/sysfs-driver-mlxreg-io > index 2cdfd09123da..ef6526a6de55 100644 > --- a/Documentation/ABI/stable/sysfs-driver-mlxreg-io > +++ b/Documentation/ABI/stable/sysfs-driver-mlxreg-io > @@ -715,3 +715,99 @@ Description: This file shows 1 in case the system reset happened due to the > switch board. > > The file is read only. > + > +What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/global_wp_request > +Date: January 2025 Please estimate the actual release date. > +KernelVersion: 6.14 This ship has sailed. > +Contact: Vadim Pasternak <vadimp@xxxxxxxxxx> > +Description: This file when written 1 activates request to allow access to > + the write protected flashes. Such request can be performed only > + for system equipped with BMC (Board Management Controller), > + which can grant access to protected flashes. In case BMC allows > + access - it will respond with "global_wp_response". BMC decides > + regarding time window of granted access. After granted window is > + expired, BMC will change value back to 0. > + Default value is 0. > + > + The file is read/write. > + > +What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/global_wp_response > +Date: January 2025 > +KernelVersion: 6.14 > +Contact: Vadim Pasternak <vadimp@xxxxxxxxxx> > +Description: This file, when set 1, indicates that access to protected > + flashes have been granted to host CPU by BMC. > + Default value is 0. > + > + The file is read only. > + > +What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/shutdown_unlock > +Date: January 2025 > +KernelVersion: 6.14 > +Contact: Vadim Pasternak vadimp@xxxxxxxxxx > +Description: When ASICs are getting overheated, system protection > + hardware mechanism enforces system reboot. After system > + reboot ASICs come up in locked state. To unlock ASICs, > + this file should be written 1 > + Default value is 0. > + > + The file is read/write. > + > +What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/boot_progress > +Date: January 2025 > +KernelVersion: 6.14 > +Contact: Vadim Pasternak <vadimp@xxxxxxxxxx> > +Description: These files show the Data Process Unit board boot progress > + state. Valid states are: > + - 4 : OS starting. > + - 5 : OS running. > + - 6 : Low-Power Standby. > + > + The file is read only. > + > +What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/dpu_id > +Date: January 2025 > +KernelVersion: 6.14 > +Contact: Vadim Pasternak <vadimp@xxxxxxxxxx> > +Description: This file shows hardware Id of Data Process Unit board. > + > + The file is read only. > + > +What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/reset_aux_pwr_or_reload > +What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/reset_dpu_thermal > +What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/reset_from_main_board > +Date: January 2025 > +KernelVersion: 6.14 > +Contact: Vadim Pasternak <vadimp@xxxxxxxxxx> > +Description: These files show the Data Process Unit board reset cause, as > + following: reset due to power auxiliary outage or power reload, reset > + due to thermal shutdown, reset due to request from main board. > + Value 1 in file means this is reset cause, 0 - otherwise. Only one of > + the above causes could be 1 at the same time, representing only last > + reset cause. > + > + The files are read only. > + > +What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/perst_rst > +What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/phy_rst > +What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/tpm_rst > +What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/usbphy_rst > +Date: January 2025 > +KernelVersion: 6.14 > +Contact: Vadim Pasternak <vadimp@xxxxxxxxxx> > +Description: These files allow to reset hardware components of Data Process > + Unit board. Respectively PCI, Ethernet PHY, TPM and USB PHY > + resets. > + Default values for all the attributes is 1. Writing 0 will > + cause reset of the related component. > + > + The files are read/write. > + > +What: /sys/devices/platform/mlxplat/i2c_mlxcpld.*/i2c-*/i2c-*/*-00**/mlxreg-io.*/hwmon/hwmon*/ufm_upgrade > +Date: January 2025 > +KernelVersion: 6.14 > +Contact: Vadim Pasternak <vadimp@xxxxxxxxxx> > +Description: These files show status of Unified Fabric Manager upgrade. > + state. 0 - means upgrade is done, 1 - otherwise. > + > + The file is read only. > -- i.
