linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Anup Patel <anup.patel@wdc.com>
To: Palmer Dabbelt <palmer@dabbelt.com>,
	Palmer Dabbelt <palmerdabbelt@google.com>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	Ulf Hansson <ulf.hansson@linaro.org>,
	"Rafael J . Wysocki" <rjw@rjwysocki.net>,
	Pavel Machek <pavel@ucw.cz>, Rob Herring <robh+dt@kernel.org>
Cc: Sandeep Tripathy <milun.tripathy@gmail.com>,
	Atish Patra <atish.patra@wdc.com>,
	Alistair Francis <Alistair.Francis@wdc.com>,
	Liush <liush@allwinnertech.com>, Anup Patel <anup@brainfault.org>,
	devicetree@vger.kernel.org, linux-riscv@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	Anup Patel <anup.patel@wdc.com>
Subject: [RFC PATCH v4 4/8] RISC-V: Add SBI HSM suspend related defines
Date: Mon, 17 May 2021 18:38:19 +0530	[thread overview]
Message-ID: <20210517130823.796963-5-anup.patel@wdc.com> (raw)
In-Reply-To: <20210517130823.796963-1-anup.patel@wdc.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@wdc.com>
---
 arch/riscv/include/asm/sbi.h    | 27 ++++++++++++++++++++++-----
 arch/riscv/kernel/cpu_ops_sbi.c |  2 +-
 2 files changed, 23 insertions(+), 6 deletions(-)

diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h
index 289621da4a2a..ab9782f8da52 100644
--- a/arch/riscv/include/asm/sbi.h
+++ b/arch/riscv/include/asm/sbi.h
@@ -62,15 +62,32 @@ 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 685fae72b7f5..5fd90f03a3e9 100644
--- a/arch/riscv/kernel/cpu_ops_sbi.c
+++ b/arch/riscv/kernel/cpu_ops_sbi.c
@@ -97,7 +97,7 @@ 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;
 }
-- 
2.25.1


  parent reply	other threads:[~2021-05-17 13:10 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-17 13:08 [RFC PATCH v4 0/8] RISC-V CPU Idle Support Anup Patel
2021-05-17 13:08 ` [RFC PATCH v4 1/8] RISC-V: Enable CPU_IDLE drivers Anup Patel
2021-05-17 13:08 ` [RFC PATCH v4 2/8] RISC-V: Rename relocate() and make it global Anup Patel
2021-05-17 13:08 ` [RFC PATCH v4 3/8] RISC-V: Add arch functions for non-retentive suspend entry/exit Anup Patel
2021-05-17 13:08 ` Anup Patel [this message]
2021-05-17 13:08 ` [RFC PATCH v4 5/8] cpuidle: Factor-out power domain related code from PSCI domain driver Anup Patel
2021-05-24 18:01   ` Ulf Hansson
2021-05-25  5:39     ` Anup Patel
2021-05-25  9:05       ` Ulf Hansson
2021-05-28  9:26         ` Ulf Hansson
2021-05-17 13:08 ` [RFC PATCH v4 6/8] cpuidle: Add RISC-V SBI CPU idle driver Anup Patel
2021-05-17 13:08 ` [RFC PATCH v4 7/8] dt-bindings: Add common bindings for ARM and RISC-V idle states Anup Patel
2021-05-17 13:08 ` [RFC PATCH v4 8/8] RISC-V: Enable RISC-V SBI CPU Idle driver for QEMU virt machine Anup Patel

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210517130823.796963-5-anup.patel@wdc.com \
    --to=anup.patel@wdc.com \
    --cc=Alistair.Francis@wdc.com \
    --cc=anup@brainfault.org \
    --cc=aou@eecs.berkeley.edu \
    --cc=atish.patra@wdc.com \
    --cc=daniel.lezcano@linaro.org \
    --cc=devicetree@vger.kernel.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=linux-riscv@lists.infradead.org \
    --cc=liush@allwinnertech.com \
    --cc=milun.tripathy@gmail.com \
    --cc=palmer@dabbelt.com \
    --cc=palmerdabbelt@google.com \
    --cc=paul.walmsley@sifive.com \
    --cc=pavel@ucw.cz \
    --cc=rjw@rjwysocki.net \
    --cc=robh+dt@kernel.org \
    --cc=ulf.hansson@linaro.org \
    --subject='Re: [RFC PATCH v4 4/8] RISC-V: Add SBI HSM suspend related defines' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).