| Message ID | 20220201082227.361967-5-apatel@ventanamicro.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | KVM RISC-V SBI v0.3 support | expand |
On Tue, Feb 1, 2022 at 12:23 AM Anup Patel <apatel@ventanamicro.com> wrote: > > We add defines related to SBI HSM suspend call and also update HSM states > naming as-per the latest SBI specification. > > Signed-off-by: Anup Patel <apatel@ventanamicro.com> > --- > 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(-) > > 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, > -- > 2.25.1 > Reviewed-by: Atish Patra <atishp@rivosinc.com>
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,
We add defines related to SBI HSM suspend call and also update HSM states naming as-per the latest SBI specification. Signed-off-by: Anup Patel <apatel@ventanamicro.com> --- 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(-)