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Message-Id: <20220210054947.170134-5-apatel@ventanamicro.com>
Date: Thu, 10 Feb 2022 11:19:43 +0530
From: Anup Patel <apatel@...tanamicro.com>
To: Palmer Dabbelt <palmer@...belt.com>,
Paul Walmsley <paul.walmsley@...ive.com>,
Albert Ou <aou@...s.berkeley.edu>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Ulf Hansson <ulf.hansson@...aro.org>,
"Rafael J . Wysocki" <rjw@...ysocki.net>,
Pavel Machek <pavel@....cz>, Rob Herring <robh+dt@...nel.org>
Cc: Sandeep Tripathy <milun.tripathy@...il.com>,
Atish Patra <atishp@...shpatra.org>,
Alistair Francis <Alistair.Francis@....com>,
Liush <liush@...winnertech.com>,
Anup Patel <anup@...infault.org>, devicetree@...r.kernel.org,
linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
kvm-riscv@...ts.infradead.org,
Anup Patel <apatel@...tanamicro.com>,
Guo Ren <guoren@...nel.org>
Subject: [PATCH v11 4/8] RISC-V: Add SBI HSM suspend related defines
From: Anup Patel <anup.patel@....com>
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 <anup.patel@....com>
Signed-off-by: Anup Patel <apatel@...tanamicro.com>
Reviewed-by: Guo Ren <guoren@...nel.org>
---
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
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