Date: Tue, 15 Oct 2024 17:25:09 GMT From: Andrew Turner <andrew@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: e4c3536138f4 - main - dev/psci: Create macros to simplify calling SMCCC Message-ID: <202410151725.49FHP95j027808@gitrepo.freebsd.org>
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The branch main has been updated by andrew: URL: https://cgit.FreeBSD.org/src/commit/?id=e4c3536138f4a314dc26331b0a1488faae09aaf4 commit e4c3536138f4a314dc26331b0a1488faae09aaf4 Author: Andrew Turner <andrew@FreeBSD.org> AuthorDate: 2024-10-14 14:33:44 +0000 Commit: Andrew Turner <andrew@FreeBSD.org> CommitDate: 2024-10-15 17:24:41 +0000 dev/psci: Create macros to simplify calling SMCCC When calling into SMCCC functions we often only need a few arguments. As the current function needs all 8 possible arguments to be set the unused values will be zero. Create a macro to pass in the used values, followed by enough zeros, then the result pointer. Sponsored by: Arm Ltd Differential Revision: https://reviews.freebsd.org/D46986 --- sys/dev/psci/smccc.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/sys/dev/psci/smccc.h b/sys/dev/psci/smccc.h index 96527f037d78..dd10fb8018ae 100644 --- a/sys/dev/psci/smccc.h +++ b/sys/dev/psci/smccc.h @@ -91,6 +91,38 @@ int arm_smccc_smc(register_t, register_t, register_t, register_t, register_t, int arm_smccc_hvc(register_t, register_t, register_t, register_t, register_t, register_t, register_t, register_t, struct arm_smccc_res *res); +#define arm_smccc_invoke_1(func, a0, res) \ + func(a0, 0, 0, 0, 0, 0, 0, 0, res) +#define arm_smccc_invoke_2(func, a0, a1, res) \ + func(a0, a1, 0, 0, 0, 0, 0, 0, res) +#define arm_smccc_invoke_3(func, a0, a1, a2, res) \ + func(a0, a1, a2, 0, 0, 0, 0, 0, res) +#define arm_smccc_invoke_4(func, a0, a1, a2, a3, res) \ + func(a0, a1, a2, a3, 0, 0, 0, 0, res) +#define arm_smccc_invoke_5(func, a0, a1, a2, a3, a4, res) \ + func(a0, a1, a2, a3, a4, 0, 0, 0, res) +#define arm_smccc_invoke_6(func, a0, a1, a2, a3, a4, a5, res) \ + func(a0, a1, a2, a3, a4, a5, 0, 0, res) +#define arm_smccc_invoke_7(func, a0, a1, a2, a3, a4, a5, a6, res) \ + func(a0, a1, a2, a3, a4, a5, a6, 0, res) +#define arm_smccc_invoke_8(func, a0, a1, a2, a3, a4, a5, a6, a7, res) \ + func(a0, a1, a2, a3, a4, a5, a6, a7, res) + +#define _arm_smccc_invoke_macro(_1, _2, _3, _4, _5, _6, _7, _8, NAME, ...) \ + NAME +#define _arm_smccc_invoke(func, a0, ...) \ + _arm_smccc_invoke_macro(__VA_ARGS__, arm_smccc_invoke_8, \ + arm_smccc_invoke_7, arm_smccc_invoke_6, arm_smccc_invoke_5, \ + arm_smccc_invoke_4, arm_smccc_invoke_3, arm_smccc_invoke_2, \ + arm_smccc_invoke_1)(func, a0, __VA_ARGS__) + +#define arm_smccc_invoke_hvc(a0, ...) \ + _arm_smccc_invoke(arm_smccc_hvc, a0, __VA_ARGS__) +#define arm_smccc_invoke_smc(a0, ...) \ + _arm_smccc_invoke(arm_smccc_smc, a0, __VA_ARGS__) +#define arm_smccc_invoke(a0, ...) \ + _arm_smccc_invoke(psci_callfn, a0, __VA_ARGS__) + struct arm_smccc_1_2_regs { register_t a0; register_t a1;
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