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| author | Rijo Thomas <Rijo-john.Thomas@amd.com> | 2019-12-04 09:18:59 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-12-20 09:58:32 +0300 |
| commit | b93566f1bb54e02a1ff1e3b4782073be1886744e (patch) | |
| tree | 67a4ddf206b02c1b6e7d3b7752e36ec512a2cb62 /drivers/crypto/ccp/psp-dev.h | |
| parent | 9b67d08dbc1751ab15d972a63a4d9132e7e7442f (diff) | |
| download | linux-b93566f1bb54e02a1ff1e3b4782073be1886744e.tar.xz | |
crypto: ccp - create a generic psp-dev file
The PSP (Platform Security Processor) 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.
Therefore, introduce psp-dev.c and psp-dev.h files, which can invoke
SEV (or TEE) initialization based on platform feature support.
TEE interface support will be introduced in a later patch.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Jens Wiklander <jens.wiklander@linaro.org>
Co-developed-by: Devaraj Rangasamy <Devaraj.Rangasamy@amd.com>
Signed-off-by: Devaraj Rangasamy <Devaraj.Rangasamy@amd.com>
Signed-off-by: Rijo Thomas <Rijo-john.Thomas@amd.com>
Acked-by: Gary R Hook <gary.hook@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 | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/crypto/ccp/psp-dev.h b/drivers/crypto/ccp/psp-dev.h new file mode 100644 index 000000000000..7c014acdd69c --- /dev/null +++ b/drivers/crypto/ccp/psp-dev.h @@ -0,0 +1,52 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * AMD Platform Security Processor (PSP) interface driver + * + * Copyright (C) 2017-2019 Advanced Micro Devices, Inc. + * + * Author: Brijesh Singh <brijesh.singh@amd.com> + */ + +#ifndef __PSP_DEV_H__ +#define __PSP_DEV_H__ + +#include <linux/device.h> +#include <linux/list.h> +#include <linux/bits.h> +#include <linux/interrupt.h> + +#include "sp-dev.h" + +#define PSP_CMDRESP_RESP BIT(31) +#define PSP_CMDRESP_ERR_MASK 0xffff + +#define MAX_PSP_NAME_LEN 16 + +extern struct psp_device *psp_master; + +typedef void (*psp_irq_handler_t)(int, void *, unsigned int); + +struct psp_device { + struct list_head entry; + + struct psp_vdata *vdata; + char name[MAX_PSP_NAME_LEN]; + + struct device *dev; + struct sp_device *sp; + + void __iomem *io_regs; + + psp_irq_handler_t sev_irq_handler; + void *sev_irq_data; + + void *sev_data; +}; + +void psp_set_sev_irq_handler(struct psp_device *psp, psp_irq_handler_t handler, + void *data); +void psp_clear_sev_irq_handler(struct psp_device *psp); + +struct psp_device *psp_get_master_device(void); + +#endif /* __PSP_DEV_H */ |