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path: root/drivers/crypto/ccp/dbc.h
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2023-09-15crypto: ccp - Add support for DBC over PSP mailboxMario Limonciello
On some SOCs DBC is supported through the PSP mailbox instead of the platform mailbox. This capability is advertised in the PSP capabilities register. Allow using this communication path if supported. Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-09-15crypto: ccp - Add a communication path abstraction for DBCMario Limonciello
DBC is currently accessed only from the platform access mailbox and a lot of that implementation's communication path is intertwined with DBC. Add an abstraction layer for pointers into the mailbox. No intended functional changes. Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-07-20crypto: ccp - Add support for getting and setting DBC parametersMario Limonciello
After software has authenticated a dynamic boost control request, it can fetch and set supported parameters using a selection of messages. Add support for these messages and export the ability to do this to userspace. Acked-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-07-20crypto: ccp - Add support for setting user ID for dynamic boost controlMario Limonciello
As part of the authentication flow for Dynamic Boost Control, the calling software will need to send a uid used in all of its future communications. Add support for another IOCTL call to let userspace software set this up. Acked-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-07-20crypto: ccp - Add support for fetching a nonce for dynamic boost controlMario Limonciello
Dynamic Boost Control is a feature offered on AMD client platforms that allows software to request and set power or frequency limits. Only software that has authenticated with the PSP can retrieve or set these limits. Create a character device and ioctl for fetching the nonce. This ioctl supports optionally passing authentication information which will influence how many calls the nonce is valid for. Acked-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>