b93566f1bb
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>
53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* AMD Platform Security Processor (PSP) interface driver
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*
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* Copyright (C) 2017-2019 Advanced Micro Devices, Inc.
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*
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* Author: Brijesh Singh <brijesh.singh@amd.com>
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*/
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#ifndef __PSP_DEV_H__
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#define __PSP_DEV_H__
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#include <linux/device.h>
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#include <linux/list.h>
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#include <linux/bits.h>
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#include <linux/interrupt.h>
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#include "sp-dev.h"
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#define PSP_CMDRESP_RESP BIT(31)
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#define PSP_CMDRESP_ERR_MASK 0xffff
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#define MAX_PSP_NAME_LEN 16
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extern struct psp_device *psp_master;
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typedef void (*psp_irq_handler_t)(int, void *, unsigned int);
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struct psp_device {
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struct list_head entry;
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struct psp_vdata *vdata;
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char name[MAX_PSP_NAME_LEN];
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struct device *dev;
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struct sp_device *sp;
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void __iomem *io_regs;
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psp_irq_handler_t sev_irq_handler;
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void *sev_irq_data;
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void *sev_data;
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};
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void psp_set_sev_irq_handler(struct psp_device *psp, psp_irq_handler_t handler,
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void *data);
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void psp_clear_sev_irq_handler(struct psp_device *psp);
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struct psp_device *psp_get_master_device(void);
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#endif /* __PSP_DEV_H */
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