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crypto: ccp: Add Platform Security Processor (PSP) device support

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The Platform Security Processor (PSP) is part of the AMD Secure
Processor (AMD-SP) functionality. The PSP is a dedicated processor
that provides support for key management commands in Secure Encrypted
Virtualization (SEV) mode, along with software-based Trusted Execution
Environment (TEE) to enable third-party trusted applications.

Note that the key management functionality provided by the SEV firmware
can be used outside of the kvm-amd driver hence it doesn't need to
depend on CONFIG_KVM_AMD.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Gary Hook <gary.hook@amd.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: linux-crypto@vger.kernel.org
Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Improvements-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
This commit is contained in:
Brijesh Singh
2017-12-04 10:57:28 -06:00
parent 592d5e74dd
commit 2a6170dfe7
7 changed files with 277 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/crypto/ccp/sp-dev.h
View File

@@ -42,12 +42,17 @@ struct ccp_vdata {
const unsigned int offset;
const unsigned int rsamax;
};
struct psp_vdata {
const unsigned int offset;
};
/* Structure to hold SP device data */
struct sp_dev_vdata {
const unsigned int bar;
const struct ccp_vdata *ccp_vdata;
void *psp_vdata;
const struct psp_vdata *psp_vdata;
};
struct sp_device {
@@ -68,6 +73,10 @@ struct sp_device {
/* DMA caching attribute support */
unsigned int axcache;
/* get and set master device */
struct sp_device*(*get_psp_master_device)(void);
void (*set_psp_master_device)(struct sp_device *);
bool irq_registered;
bool use_tasklet;
@@ -103,6 +112,7 @@ void sp_free_ccp_irq(struct sp_device *sp, void *data);
int sp_request_psp_irq(struct sp_device *sp, irq_handler_t handler,
const char *name, void *data);
void sp_free_psp_irq(struct sp_device *sp, void *data);
struct sp_device *sp_get_psp_master_device(void);
#ifdef CONFIG_CRYPTO_DEV_SP_CCP
@@ -130,4 +140,16 @@ static inline int ccp_dev_resume(struct sp_device *sp)
}
#endif /* CONFIG_CRYPTO_DEV_SP_CCP */
#ifdef CONFIG_CRYPTO_DEV_SP_PSP
int psp_dev_init(struct sp_device *sp);
void psp_dev_destroy(struct sp_device *sp);
#else /* !CONFIG_CRYPTO_DEV_SP_PSP */
static inline int psp_dev_init(struct sp_device *sp) { return 0; }
static inline void psp_dev_destroy(struct sp_device *sp) { }
#endif /* CONFIG_CRYPTO_DEV_SP_PSP */
#endif