| Message ID | 20210602141057.27107-15-brijesh.singh@amd.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | None | expand |
* Brijesh Singh (brijesh.singh@amd.com) wrote: > Provide the APIs for the hypervisor to manage an SEV-SNP guest. The > commands for SEV-SNP is defined in the SEV-SNP firmware specification. > > Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> > --- > drivers/crypto/ccp/sev-dev.c | 24 ++++++++++++ > include/linux/psp-sev.h | 74 ++++++++++++++++++++++++++++++++++++ > 2 files changed, 98 insertions(+) > > diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c > index b225face37b1..def2996111db 100644 > --- a/drivers/crypto/ccp/sev-dev.c > +++ b/drivers/crypto/ccp/sev-dev.c > @@ -1014,6 +1014,30 @@ int sev_guest_df_flush(int *error) > } > EXPORT_SYMBOL_GPL(sev_guest_df_flush); > > +int snp_guest_decommission(struct sev_data_snp_decommission *data, int *error) > +{ > + return sev_do_cmd(SEV_CMD_SNP_DECOMMISSION, data, error); > +} > +EXPORT_SYMBOL_GPL(snp_guest_decommission); > + > +int snp_guest_df_flush(int *error) > +{ > + return sev_do_cmd(SEV_CMD_SNP_DF_FLUSH, NULL, error); > +} > +EXPORT_SYMBOL_GPL(snp_guest_df_flush); > + > +int snp_guest_page_reclaim(struct sev_data_snp_page_reclaim *data, int *error) > +{ > + return sev_do_cmd(SEV_CMD_SNP_PAGE_RECLAIM, data, error); > +} > +EXPORT_SYMBOL_GPL(snp_guest_page_reclaim); > + > +int snp_guest_dbg_decrypt(struct sev_data_snp_dbg *data, int *error) > +{ > + return sev_do_cmd(SEV_CMD_SNP_DBG_DECRYPT, data, error); > +} > +EXPORT_SYMBOL_GPL(snp_guest_dbg_decrypt); > + > static void sev_exit(struct kref *ref) > { > misc_deregister(&misc_dev->misc); > diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h > index 1b53e8782250..63ef766cbd7a 100644 > --- a/include/linux/psp-sev.h > +++ b/include/linux/psp-sev.h > @@ -860,6 +860,65 @@ int sev_guest_df_flush(int *error); > */ > int sev_guest_decommission(struct sev_data_decommission *data, int *error); > > +/** > + * snp_guest_df_flush - perform SNP DF_FLUSH command > + * > + * @sev_ret: sev command return code > + * > + * Returns: > + * 0 if the sev successfully processed the command > + * -%ENODEV if the sev device is not available > + * -%ENOTSUPP if the sev does not support SEV sev not supporting SEV? Is that actually 'sev does not support SNP'? > + * -%ETIMEDOUT if the sev command timed out > + * -%EIO if the sev returned a non-zero return code > + */ > +int snp_guest_df_flush(int *error); > + > +/** > + * snp_guest_decommission - perform SNP_DECOMMISSION command > + * > + * @decommission: sev_data_decommission structure to be processed > + * @sev_ret: sev command return code > + * > + * Returns: > + * 0 if the sev successfully processed the command > + * -%ENODEV if the sev device is not available > + * -%ENOTSUPP if the sev does not support SEV > + * -%ETIMEDOUT if the sev command timed out > + * -%EIO if the sev returned a non-zero return code > + */ > +int snp_guest_decommission(struct sev_data_snp_decommission *data, int *error); > + > +/** > + * snp_guest_page_reclaim - perform SNP_PAGE_RECLAIM command > + * > + * @decommission: sev_snp_page_reclaim structure to be processed > + * @sev_ret: sev command return code > + * > + * Returns: > + * 0 if the sev successfully processed the command > + * -%ENODEV if the sev device is not available > + * -%ENOTSUPP if the sev does not support SEV > + * -%ETIMEDOUT if the sev command timed out > + * -%EIO if the sev returned a non-zero return code > + */ > +int snp_guest_page_reclaim(struct sev_data_snp_page_reclaim *data, int *error); > + > +/** > + * snp_guest_dbg_decrypt - perform SEV SNP_DBG_DECRYPT command > + * > + * @sev_ret: sev command return code > + * > + * Returns: > + * 0 if the sev successfully processed the command > + * -%ENODEV if the sev device is not available > + * -%ENOTSUPP if the sev does not support SEV > + * -%ETIMEDOUT if the sev command timed out > + * -%EIO if the sev returned a non-zero return code > + */ > +int snp_guest_dbg_decrypt(struct sev_data_snp_dbg *data, int *error); > + > + > void *psp_copy_user_blob(u64 uaddr, u32 len); > > #else /* !CONFIG_CRYPTO_DEV_SP_PSP */ > @@ -887,6 +946,21 @@ sev_issue_cmd_external_user(struct file *filep, unsigned int id, void *data, int > > static inline void *psp_copy_user_blob(u64 __user uaddr, u32 len) { return ERR_PTR(-EINVAL); } > > +static inline int > +snp_guest_decommission(struct sev_data_snp_decommission *data, int *error) { return -ENODEV; } > + > +static inline int snp_guest_df_flush(int *error) { return -ENODEV; } > + > +static inline int snp_guest_page_reclaim(struct sev_data_snp_page_reclaim *data, int *error) > +{ > + return -ENODEV; > +} > + > +static inline int snp_guest_dbg_decrypt(struct sev_data_snp_dbg *data, int *error) > +{ > + return -ENODEV; > +} > + > #endif /* CONFIG_CRYPTO_DEV_SP_PSP */ > > #endif /* __PSP_SEV_H__ */ > -- > 2.17.1 > > -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index b225face37b1..def2996111db 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -1014,6 +1014,30 @@ int sev_guest_df_flush(int *error) } EXPORT_SYMBOL_GPL(sev_guest_df_flush); +int snp_guest_decommission(struct sev_data_snp_decommission *data, int *error) +{ + return sev_do_cmd(SEV_CMD_SNP_DECOMMISSION, data, error); +} +EXPORT_SYMBOL_GPL(snp_guest_decommission); + +int snp_guest_df_flush(int *error) +{ + return sev_do_cmd(SEV_CMD_SNP_DF_FLUSH, NULL, error); +} +EXPORT_SYMBOL_GPL(snp_guest_df_flush); + +int snp_guest_page_reclaim(struct sev_data_snp_page_reclaim *data, int *error) +{ + return sev_do_cmd(SEV_CMD_SNP_PAGE_RECLAIM, data, error); +} +EXPORT_SYMBOL_GPL(snp_guest_page_reclaim); + +int snp_guest_dbg_decrypt(struct sev_data_snp_dbg *data, int *error) +{ + return sev_do_cmd(SEV_CMD_SNP_DBG_DECRYPT, data, error); +} +EXPORT_SYMBOL_GPL(snp_guest_dbg_decrypt); + static void sev_exit(struct kref *ref) { misc_deregister(&misc_dev->misc); diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h index 1b53e8782250..63ef766cbd7a 100644 --- a/include/linux/psp-sev.h +++ b/include/linux/psp-sev.h @@ -860,6 +860,65 @@ int sev_guest_df_flush(int *error); */ int sev_guest_decommission(struct sev_data_decommission *data, int *error); +/** + * snp_guest_df_flush - perform SNP DF_FLUSH command + * + * @sev_ret: sev command return code + * + * Returns: + * 0 if the sev successfully processed the command + * -%ENODEV if the sev device is not available + * -%ENOTSUPP if the sev does not support SEV + * -%ETIMEDOUT if the sev command timed out + * -%EIO if the sev returned a non-zero return code + */ +int snp_guest_df_flush(int *error); + +/** + * snp_guest_decommission - perform SNP_DECOMMISSION command + * + * @decommission: sev_data_decommission structure to be processed + * @sev_ret: sev command return code + * + * Returns: + * 0 if the sev successfully processed the command + * -%ENODEV if the sev device is not available + * -%ENOTSUPP if the sev does not support SEV + * -%ETIMEDOUT if the sev command timed out + * -%EIO if the sev returned a non-zero return code + */ +int snp_guest_decommission(struct sev_data_snp_decommission *data, int *error); + +/** + * snp_guest_page_reclaim - perform SNP_PAGE_RECLAIM command + * + * @decommission: sev_snp_page_reclaim structure to be processed + * @sev_ret: sev command return code + * + * Returns: + * 0 if the sev successfully processed the command + * -%ENODEV if the sev device is not available + * -%ENOTSUPP if the sev does not support SEV + * -%ETIMEDOUT if the sev command timed out + * -%EIO if the sev returned a non-zero return code + */ +int snp_guest_page_reclaim(struct sev_data_snp_page_reclaim *data, int *error); + +/** + * snp_guest_dbg_decrypt - perform SEV SNP_DBG_DECRYPT command + * + * @sev_ret: sev command return code + * + * Returns: + * 0 if the sev successfully processed the command + * -%ENODEV if the sev device is not available + * -%ENOTSUPP if the sev does not support SEV + * -%ETIMEDOUT if the sev command timed out + * -%EIO if the sev returned a non-zero return code + */ +int snp_guest_dbg_decrypt(struct sev_data_snp_dbg *data, int *error); + + void *psp_copy_user_blob(u64 uaddr, u32 len); #else /* !CONFIG_CRYPTO_DEV_SP_PSP */ @@ -887,6 +946,21 @@ sev_issue_cmd_external_user(struct file *filep, unsigned int id, void *data, int static inline void *psp_copy_user_blob(u64 __user uaddr, u32 len) { return ERR_PTR(-EINVAL); } +static inline int +snp_guest_decommission(struct sev_data_snp_decommission *data, int *error) { return -ENODEV; } + +static inline int snp_guest_df_flush(int *error) { return -ENODEV; } + +static inline int snp_guest_page_reclaim(struct sev_data_snp_page_reclaim *data, int *error) +{ + return -ENODEV; +} + +static inline int snp_guest_dbg_decrypt(struct sev_data_snp_dbg *data, int *error) +{ + return -ENODEV; +} + #endif /* CONFIG_CRYPTO_DEV_SP_PSP */ #endif /* __PSP_SEV_H__ */
Provide the APIs for the hypervisor to manage an SEV-SNP guest. The commands for SEV-SNP is defined in the SEV-SNP firmware specification. Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> --- drivers/crypto/ccp/sev-dev.c | 24 ++++++++++++ include/linux/psp-sev.h | 74 ++++++++++++++++++++++++++++++++++++ 2 files changed, 98 insertions(+)