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crypto: ccp - Add support for an interface for platform features

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Some platforms with a PSP support an interface for features that
interact directly with the PSP instead of through a SEV or TEE
environment.

Initialize this interface so that other drivers can consume it.
These drivers may either be subdrivers for the ccp module or
external modules.  For external modules, export a symbol for them
to utilize.

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>
This commit is contained in:
Mario Limonciello
2023-03-10 15:19:47 -06:00
committed by Herbert Xu
parent 1c5c1daf04
commit 7ccc4f4e2e
7 changed files with 276 additions and 1 deletions
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7
drivers/crypto/ccp/sp-dev.h
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@@ -53,9 +53,16 @@ struct tee_vdata {
const unsigned int ring_rptr_reg;
};
struct platform_access_vdata {
const unsigned int cmdresp_reg;
const unsigned int cmdbuff_addr_lo_reg;
const unsigned int cmdbuff_addr_hi_reg;
};
struct psp_vdata {
const struct sev_vdata *sev;
const struct tee_vdata *tee;
const struct platform_access_vdata *platform_access;
const unsigned int feature_reg;
const unsigned int inten_reg;
const unsigned int intsts_reg;