From b8200905e48891b4a3134b47f35c730347135eed Mon Sep 17 00:00:00 2001 From: Anup Patel Date: Thu, 10 Feb 2022 11:19:43 +0530 Subject: RISC-V: Add SBI HSM suspend related defines We add defines related to SBI HSM suspend call and also update HSM states naming as-per latest SBI specification. Signed-off-by: Anup Patel Signed-off-by: Anup Patel Reviewed-by: Guo Ren Reviewed-by: Atish Patra Signed-off-by: Palmer Dabbelt --- arch/riscv/include/asm/sbi.h | 27 ++++++++++++++++++++++----- arch/riscv/kernel/cpu_ops_sbi.c | 2 +- arch/riscv/kvm/vcpu_sbi_hsm.c | 4 ++-- 3 files changed, 25 insertions(+), 8 deletions(-) (limited to 'arch/riscv') diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h index d1c37479d828..06133b4f8e20 100644 --- a/arch/riscv/include/asm/sbi.h +++ b/arch/riscv/include/asm/sbi.h @@ -71,15 +71,32 @@ enum sbi_ext_hsm_fid { SBI_EXT_HSM_HART_START = 0, SBI_EXT_HSM_HART_STOP, SBI_EXT_HSM_HART_STATUS, + SBI_EXT_HSM_HART_SUSPEND, }; -enum sbi_hsm_hart_status { - SBI_HSM_HART_STATUS_STARTED = 0, - SBI_HSM_HART_STATUS_STOPPED, - SBI_HSM_HART_STATUS_START_PENDING, - SBI_HSM_HART_STATUS_STOP_PENDING, +enum sbi_hsm_hart_state { + SBI_HSM_STATE_STARTED = 0, + SBI_HSM_STATE_STOPPED, + SBI_HSM_STATE_START_PENDING, + SBI_HSM_STATE_STOP_PENDING, + SBI_HSM_STATE_SUSPENDED, + SBI_HSM_STATE_SUSPEND_PENDING, + SBI_HSM_STATE_RESUME_PENDING, }; +#define SBI_HSM_SUSP_BASE_MASK 0x7fffffff +#define SBI_HSM_SUSP_NON_RET_BIT 0x80000000 +#define SBI_HSM_SUSP_PLAT_BASE 0x10000000 + +#define SBI_HSM_SUSPEND_RET_DEFAULT 0x00000000 +#define SBI_HSM_SUSPEND_RET_PLATFORM SBI_HSM_SUSP_PLAT_BASE +#define SBI_HSM_SUSPEND_RET_LAST SBI_HSM_SUSP_BASE_MASK +#define SBI_HSM_SUSPEND_NON_RET_DEFAULT SBI_HSM_SUSP_NON_RET_BIT +#define SBI_HSM_SUSPEND_NON_RET_PLATFORM (SBI_HSM_SUSP_NON_RET_BIT | \ + SBI_HSM_SUSP_PLAT_BASE) +#define SBI_HSM_SUSPEND_NON_RET_LAST (SBI_HSM_SUSP_NON_RET_BIT | \ + SBI_HSM_SUSP_BASE_MASK) + enum sbi_ext_srst_fid { SBI_EXT_SRST_RESET = 0, }; diff --git a/arch/riscv/kernel/cpu_ops_sbi.c b/arch/riscv/kernel/cpu_ops_sbi.c index dae29cbfe550..2e16f6732cdf 100644 --- a/arch/riscv/kernel/cpu_ops_sbi.c +++ b/arch/riscv/kernel/cpu_ops_sbi.c @@ -111,7 +111,7 @@ static int sbi_cpu_is_stopped(unsigned int cpuid) rc = sbi_hsm_hart_get_status(hartid); - if (rc == SBI_HSM_HART_STATUS_STOPPED) + if (rc == SBI_HSM_STATE_STOPPED) return 0; return rc; } diff --git a/arch/riscv/kvm/vcpu_sbi_hsm.c b/arch/riscv/kvm/vcpu_sbi_hsm.c index 2e383687fa48..1ac4b2e8e4ec 100644 --- a/arch/riscv/kvm/vcpu_sbi_hsm.c +++ b/arch/riscv/kvm/vcpu_sbi_hsm.c @@ -60,9 +60,9 @@ static int kvm_sbi_hsm_vcpu_get_status(struct kvm_vcpu *vcpu) if (!target_vcpu) return -EINVAL; if (!target_vcpu->arch.power_off) - return SBI_HSM_HART_STATUS_STARTED; + return SBI_HSM_STATE_STARTED; else - return SBI_HSM_HART_STATUS_STOPPED; + return SBI_HSM_STATE_STOPPED; } static int kvm_sbi_ext_hsm_handler(struct kvm_vcpu *vcpu, struct kvm_run *run, -- cgit v1.2.3-58-ga151