2022-02-10 06:10:45

by Anup Patel

Subject: [PATCH v11 4/8] RISC-V: Add SBI HSM suspend related defines

From: Anup Patel <[email protected]>

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 <[email protected]>
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Guo Ren <[email protected]>
---
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

2022-02-16 08:17:55

by Atish Patra

Subject: Re: [PATCH v11 4/8] RISC-V: Add SBI HSM suspend related defines

On Wed, Feb 9, 2022 at 9:50 PM Anup Patel <[email protected]> wrote:
>
> From: Anup Patel <[email protected]>
>
> 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 <[email protected]>
> Signed-off-by: Anup Patel <[email protected]>
> Reviewed-by: Guo Ren <[email protected]>
> ---
> 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 <[email protected]>

--
Regards,
Atish

2022-02-23 09:28:53

by Anup Patel

Subject: Re: [PATCH v11 4/8] RISC-V: Add SBI HSM suspend related defines

Hi Palmer

On Thu, Feb 10, 2022 at 11:20 AM Anup Patel <[email protected]> wrote:
>
> From: Anup Patel <[email protected]>
>
> 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 <[email protected]>
> Signed-off-by: Anup Patel <[email protected]>
> Reviewed-by: Guo Ren <[email protected]>

This patch is shared with "KVM RISC-V SBI v0.3 support".
(https://lore.kernel.org/all/[email protected]/T/)

How do you want to handle this ?

One option is that I take this patch through the KVM RISC-V tree
and you can send this series (minus this patch) for 5.18 after the
KVM RISC-V changes have been merged.

Regards,
Anup

> ---
> 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
>

2022-03-08 12:57:40

by Anup Patel

Subject: Re: [PATCH v11 4/8] RISC-V: Add SBI HSM suspend related defines

Hi Palmer,

On Wed, Feb 23, 2022 at 12:32 PM Anup Patel <[email protected]> wrote:
>
> Hi Palmer
>
> On Thu, Feb 10, 2022 at 11:20 AM Anup Patel <[email protected]> wrote:
> >
> > From: Anup Patel <[email protected]>
> >
> > 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 <[email protected]>
> > Signed-off-by: Anup Patel <[email protected]>
> > Reviewed-by: Guo Ren <[email protected]>
>
> This patch is shared with "KVM RISC-V SBI v0.3 support".
> (https://lore.kernel.org/all/[email protected]/T/)
>
> How do you want to handle this ?
>
> One option is that I take this patch through the KVM RISC-V tree
> and you can send this series (minus this patch) for 5.18 after the
> KVM RISC-V changes have been merged.

I have queued this patch for 5.18. Let me know if you want to
handle this patch differently.

Thanks,
Anup

>
> Regards,
> Anup
>
> > ---
> > 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
> >