kernel/drivers/platform/x86/intel/sdsi.c, branch linux-rolling-stable

sysfs: treewide: switch back to attribute_group::bin_attrs

2025-06-17T08:44:15Z

The normal bin_attrs field can now handle const pointers. This makes the _new variant unnecessary. Switch all users back. Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/r/20250530-sysfs-const-bin_attr-final-v3-4-724bfcf05b99@weissschuh.net Signed-off-by: Greg Kroah-Hartman

platform/x86/intel/sdsi: Constify 'struct bin_attribute'

2024-12-17T11:12:52Z

The sysfs core now allows instances of 'struct bin_attribute' to be moved into read-only memory. Make use of that to protect them against accidental or malicious modifications. Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/r/20241202-sysfs-const-bin_attr-pdx86-v1-3-9ab204c2a814@weissschuh.net Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

sysfs: treewide: constify attribute callback of bin_is_visible()

2024-11-05T13:00:28Z

The is_bin_visible() callbacks should not modify the struct bin_attribute passed as argument. Enforce this by marking the argument as const. As there are not many callback implementers perform this change throughout the tree at once. Signed-off-by: Thomas Weißschuh Acked-by: Martin K. Petersen Acked-by: Jason Gunthorpe Acked-by: Ira Weiny Acked-by: Krzysztof Wilczyński Link: https://lore.kernel.org/r/20241103-sysfs-const-bin_attr-v2-5-71110628844c@weissschuh.net Signed-off-by: Greg Kroah-Hartman

platform/x86/intel/vsec.h: Move to include/linux

2024-08-12T14:21:31Z

Some drivers outside of PDX86 need access to the vsec header. Move it to include/linux to make it easier to include. Reviewed-by: Ilpo Järvinen Reviewed-by: Michael J. Ruhl Signed-off-by: David E. Box Link: https://lore.kernel.org/r/20240725122346.4063913-2-michael.j.ruhl@intel.com Signed-off-by: Hans de Goede

platform/x86/intel/sdsi: Add attribute to read the current meter state

2024-04-15T14:05:59Z

The meter_certificate file provides access to metering information that may be attested but is only updated every 8 hours. Add new attribute, meter_current, to allow reading an untested snapshot of the current values. Signed-off-by: David E. Box Reviewed-by: Kuppuswamy Sathyanarayanan Reviewed-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20240411025856.2782476-5-david.e.box@linux.intel.com Signed-off-by: Hans de Goede

platform/x86/intel/sdsi: Add in-band BIOS lock support

2024-04-15T14:05:59Z

As per SDSi in-band interface specification, sec titled "BIOS lock for in-band provisioning", when IB_LOCK bit is set in control qword, the SDSI agent is only allowed to perform the read flow, but not allowed to provision license blob or license key. So add check for it in sdsi_provision(). Signed-off-by: Kuppuswamy Sathyanarayanan Signed-off-by: David E. Box Reviewed-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20240411025856.2782476-4-david.e.box@linux.intel.com Signed-off-by: Hans de Goede

platform/x86/intel/sdsi: Combine read and write mailbox flows

2024-04-15T14:05:59Z

The current mailbox commands are either read-only or write-only and the flow is different for each. New commands will need to send and receive data. In preparation for these commands, create a common polling function to handle sending data and receiving in the same transaction. Signed-off-by: David E. Box Reviewed-by: Kuppuswamy Sathyanarayanan Reviewed-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20240411025856.2782476-3-david.e.box@linux.intel.com Signed-off-by: Hans de Goede

platform/x86/intel/sdsi: Set message size during writes

2024-04-15T14:05:50Z

New mailbox commands will support sending multi packet writes and updated firmware now requires that the message size be written for all commands along with the packet size. Since the driver doesn't perform writes larger than the packet size, set the message size to the same value. Signed-off-by: David E. Box Reviewed-by: Ilpo Järvinen Reviewed-by: Kuppuswamy Sathyanarayanan Link: https://lore.kernel.org/r/20240411025856.2782476-2-david.e.box@linux.intel.com Signed-off-by: Hans de Goede

platform/x86/intel/sdsi: Change mailbox timeout

2023-04-17T10:12:29Z

On some platforms, it may take up to 400ms for the ready bit to be set in a successful mailbox transaction. Set the timeout to 500ms to cover the worst case. Signed-off-by: David E. Box Reviewed-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20230413013230.1521584-1-david.e.box@linux.intel.com Signed-off-by: Hans de Goede

platform/x86/intel/sdsi: Add meter certificate support

2022-11-21T09:55:35Z

Add support for reading the meter certificate from Intel On Demand hardware. The meter certificate [1] is used to access the utilization metrics of enabled features in support of the Intel On Demand consumption model. Similar to the state certificate, the meter certificate is read by mailbox command. While making similar changes also use the BIN_ATTR_ADMIN_RO helper to create the 'registers' sysfs file. Link: https://github.com/intel-sandbox/debox1.intel_sdsi/blob/gnr-review/meter-certificate.rst [1] Signed-off-by: David E. Box Link: https://lore.kernel.org/r/20221119002343.1281885-5-david.e.box@linux.intel.com Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede