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https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
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bdb07f35a5
Test the kernel DEXCR[NPHIE] interface and hashchk exception handling. Introduces with it a DEXCR utils library for common DEXCR operations. Volatile is used to prevent the compiler optimising away the signal tests. Signed-off-by: Benjamin Gray <bgray@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230616034846.311705-11-bgray@linux.ibm.com
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* POWER Dynamic Execution Control Facility (DEXCR)
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*
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* This header file contains helper functions and macros
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* required for all the DEXCR related test cases.
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*/
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#ifndef _SELFTESTS_POWERPC_DEXCR_DEXCR_H
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#define _SELFTESTS_POWERPC_DEXCR_DEXCR_H
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#include <stdbool.h>
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#include <sys/types.h>
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#include "reg.h"
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#define DEXCR_PR_BIT(aspect) __MASK(63 - (32 + (aspect)))
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#define DEXCR_PR_SBHE DEXCR_PR_BIT(0)
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#define DEXCR_PR_IBRTPD DEXCR_PR_BIT(3)
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#define DEXCR_PR_SRAPD DEXCR_PR_BIT(4)
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#define DEXCR_PR_NPHIE DEXCR_PR_BIT(5)
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#define PPC_RAW_HASH_ARGS(b, i, a) \
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((((i) >> 3) & 0x1F) << 21 | (a) << 16 | (b) << 11 | (((i) >> 8) & 0x1))
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#define PPC_RAW_HASHST(b, i, a) \
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str(.long (0x7C0005A4 | PPC_RAW_HASH_ARGS(b, i, a));)
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#define PPC_RAW_HASHCHK(b, i, a) \
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str(.long (0x7C0005E4 | PPC_RAW_HASH_ARGS(b, i, a));)
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bool dexcr_exists(void);
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bool hashchk_triggers(void);
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enum dexcr_source {
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DEXCR, /* Userspace DEXCR value */
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HDEXCR, /* Hypervisor enforced DEXCR value */
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EFFECTIVE, /* Bitwise OR of UDEXCR and ENFORCED DEXCR bits */
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};
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unsigned int get_dexcr(enum dexcr_source source);
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void await_child_success(pid_t pid);
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void hashst(unsigned long lr, void *sp);
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void hashchk(unsigned long lr, void *sp);
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void do_bad_hashchk(void);
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#endif /* _SELFTESTS_POWERPC_DEXCR_DEXCR_H */
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