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1c5c1daf04
Some of the bits and fields used for mailboxes communicating with the PSP are common across all mailbox implementations (SEV, TEE, etc). Move these bits into the common `linux/psp.h` so they don't need to be re-defined for each implementation. Acked-by: Rijo Thomas <Rijo-john.Thomas@amd.com> Acked-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
63 lines
1.2 KiB
C
63 lines
1.2 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 __SEV_DEV_H__
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#define __SEV_DEV_H__
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#include <linux/device.h>
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#include <linux/spinlock.h>
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#include <linux/mutex.h>
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#include <linux/list.h>
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#include <linux/wait.h>
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#include <linux/dmapool.h>
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#include <linux/hw_random.h>
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#include <linux/bitops.h>
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#include <linux/interrupt.h>
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#include <linux/irqreturn.h>
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#include <linux/dmaengine.h>
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#include <linux/psp-sev.h>
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#include <linux/miscdevice.h>
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#include <linux/capability.h>
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#define SEV_CMDRESP_CMD GENMASK(26, 16)
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#define SEV_CMD_COMPLETE BIT(1)
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#define SEV_CMDRESP_IOC BIT(0)
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struct sev_misc_dev {
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struct kref refcount;
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struct miscdevice misc;
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};
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struct sev_device {
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struct device *dev;
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struct psp_device *psp;
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void __iomem *io_regs;
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struct sev_vdata *vdata;
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int state;
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unsigned int int_rcvd;
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wait_queue_head_t int_queue;
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struct sev_misc_dev *misc;
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u8 api_major;
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u8 api_minor;
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u8 build;
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void *cmd_buf;
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};
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int sev_dev_init(struct psp_device *psp);
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void sev_dev_destroy(struct psp_device *psp);
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void sev_pci_init(void);
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void sev_pci_exit(void);
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#endif /* __SEV_DEV_H */
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