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authorBrijesh Singh <brijesh.singh@amd.com>2017-12-04 10:57:28 -0600
committerBrijesh Singh <brijesh.singh@amd.com>2017-12-04 10:57:28 -0600
commit2a6170dfe755b167ca8d6bba2e73695f08b37c54 (patch)
treea84a23299f41a90e566c6b7acb92d27849fd0316 /drivers/crypto/ccp/sp-dev.h
parent592d5e74ddb28f66c5f4acffcd36156b1621a7c4 (diff)
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crypto: ccp: Add Platform Security Processor (PSP) device support
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>
Diffstat (limited to 'drivers/crypto/ccp/sp-dev.h')
-rw-r--r--drivers/crypto/ccp/sp-dev.h24
1 files changed, 23 insertions, 1 deletions
diff --git a/drivers/crypto/ccp/sp-dev.h b/drivers/crypto/ccp/sp-dev.h
index 5ab486ade1ad..909cf3e436b4 100644
--- a/drivers/crypto/ccp/sp-dev.h
+++ b/drivers/crypto/ccp/sp-dev.h
@@ -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
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