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d5812571f5
Some platforms support using a doorbell to communicate. Export this feature for other drivers to utilize as well. Link: https://lore.kernel.org/linux-i2c/20220916131854.687371-3-jsd@semihalf.com/ Suggested-by: Jan Dabros <jsd@semihalf.com> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
29 lines
697 B
C
29 lines
697 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef __PSP_H
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#define __PSP_H
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#ifdef CONFIG_X86
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#include <linux/mem_encrypt.h>
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#define __psp_pa(x) __sme_pa(x)
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#else
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#define __psp_pa(x) __pa(x)
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#endif
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/*
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* Fields and bits used by most PSP mailboxes
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*
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* Note: Some mailboxes (such as SEV) have extra bits or different meanings
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* and should include an appropriate local definition in their source file.
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*/
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#define PSP_CMDRESP_STS GENMASK(15, 0)
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#define PSP_CMDRESP_CMD GENMASK(23, 16)
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#define PSP_CMDRESP_RESERVED GENMASK(29, 24)
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#define PSP_CMDRESP_RECOVERY BIT(30)
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#define PSP_CMDRESP_RESP BIT(31)
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#define PSP_DRBL_MSG PSP_CMDRESP_CMD
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#define PSP_DRBL_RING BIT(0)
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#endif /* __PSP_H */
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