diff options
| author | Tom Lendacky <thomas.lendacky@amd.com> | 2023-09-07 13:48:42 -0500 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-09-15 18:29:45 +0800 |
| commit | 949a0c8dd3c257730ef7205be759e4bc6cf49cea (patch) | |
| tree | 26d40648a649445f48d666582703318d505dc1cb /drivers/crypto/ccp/psp-dev.h | |
| parent | b58a36008bfa1aadf55f516bcbfae40c779eb54b (diff) | |
crypto: ccp - Move direct access to some PSP registers out of TEE
With the PSP mailbox registers supporting more than just TEE, access to
them must be maintained and serialized by the PSP device support. Remove
TEE support direct access and create an interface in the PSP support
where the register access can be controlled/serialized.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Tested-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/ccp/psp-dev.h')
| -rw-r--r-- | drivers/crypto/ccp/psp-dev.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/crypto/ccp/psp-dev.h b/drivers/crypto/ccp/psp-dev.h index 8a4de69399c5..d917657c6085 100644 --- a/drivers/crypto/ccp/psp-dev.h +++ b/drivers/crypto/ccp/psp-dev.h @@ -14,6 +14,8 @@ #include <linux/list.h> #include <linux/bits.h> #include <linux/interrupt.h> +#include <linux/mutex.h> +#include <linux/psp.h> #include "sp-dev.h" @@ -33,6 +35,7 @@ struct psp_device { struct sp_device *sp; void __iomem *io_regs; + struct mutex mailbox_mutex; psp_irq_handler_t sev_irq_handler; void *sev_irq_data; @@ -71,4 +74,19 @@ struct psp_device *psp_get_master_device(void); #define PSP_SECURITY_HSP_TPM_AVAILABLE BIT(10) #define PSP_SECURITY_ROM_ARMOR_ENFORCED BIT(11) +/** + * enum psp_cmd - PSP mailbox commands + * @PSP_CMD_TEE_RING_INIT: Initialize TEE ring buffer + * @PSP_CMD_TEE_RING_DESTROY: Destroy TEE ring buffer + * @PSP_CMD_MAX: Maximum command id + */ +enum psp_cmd { + PSP_CMD_TEE_RING_INIT = 1, + PSP_CMD_TEE_RING_DESTROY = 2, + PSP_CMD_MAX = 15, +}; + +int psp_mailbox_command(struct psp_device *psp, enum psp_cmd cmd, void *cmdbuff, + unsigned int timeout_msecs, unsigned int *cmdresp); + #endif /* __PSP_DEV_H */ |