All of lore.kernel.org
 help / color / mirror / Atom feed
From: Mason <slash.tmp@free.fr>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Russell King <linux@arm.linux.org.uk>,
	Kevin Hilman <khilman@kernel.org>
Cc: linux-pm <linux-pm@vger.kernel.org>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	Arnd Bergmann <arnd@arndb.de>,
	Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
	Sebastian Frias <sf84@laposte.net>,
	Thibaud Cornic <thibaud_cornic@sigmadesigns.com>
Subject: [PATCH] ARM: tango: add HOTPLUG_CPU support
Date: Wed, 15 Jun 2016 17:19:47 +0200	[thread overview]
Message-ID: <57617213.9030804@free.fr> (raw)

From: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>

cpu_die() and cpu_kill() are implemented in firmware.

Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
---
 arch/arm/mach-tango/platsmp.c | 17 +++++++++++++++++
 arch/arm/mach-tango/smc.h     |  4 +++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-tango/platsmp.c b/arch/arm/mach-tango/platsmp.c
index a21f55e000d2..ff495f6b6f40 100644
--- a/arch/arm/mach-tango/platsmp.c
+++ b/arch/arm/mach-tango/platsmp.c
@@ -9,8 +9,25 @@ static int tango_boot_secondary(unsigned int cpu, struct task_struct *idle)
 	return 0;
 }
 
+#ifdef CONFIG_HOTPLUG_CPU
+static int tango_cpu_kill(unsigned int cpu)
+{
+	return tango_aux_core_kill(cpu);
+}
+
+static void tango_cpu_die(unsigned int cpu)
+{
+	tango_aux_core_die(cpu);
+}
+#else
+#define tango_cpu_kill	NULL
+#define tango_cpu_die	NULL
+#endif
+
 static const struct smp_operations tango_smp_ops __initconst = {
 	.smp_boot_secondary	= tango_boot_secondary,
+	.cpu_kill		= tango_cpu_kill,
+	.cpu_die		= tango_cpu_die,
 };
 
 CPU_METHOD_OF_DECLARE(tango4_smp, "sigma,tango4-smp", &tango_smp_ops);
diff --git a/arch/arm/mach-tango/smc.h b/arch/arm/mach-tango/smc.h
index 7a4af35cc390..3d31f984f44c 100644
--- a/arch/arm/mach-tango/smc.h
+++ b/arch/arm/mach-tango/smc.h
@@ -2,4 +2,6 @@ extern int tango_smc(unsigned int val, unsigned int service);
 
 #define tango_set_l2_control(val)	tango_smc(val, 0x102)
 #define tango_start_aux_core(val)	tango_smc(val, 0x104)
-#define tango_set_aux_boot_addr(val)	tango_smc((unsigned int)val, 0x105)
+#define tango_set_aux_boot_addr(val)	tango_smc(val, 0x105)
+#define tango_aux_core_die(val)		tango_smc(val, 0x121)
+#define tango_aux_core_kill(val)	tango_smc(val, 0x122)
-- 
2.8.2

WARNING: multiple messages have this Message-ID (diff)
From: slash.tmp@free.fr (Mason)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: tango: add HOTPLUG_CPU support
Date: Wed, 15 Jun 2016 17:19:47 +0200	[thread overview]
Message-ID: <57617213.9030804@free.fr> (raw)

From: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>

cpu_die() and cpu_kill() are implemented in firmware.

Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
---
 arch/arm/mach-tango/platsmp.c | 17 +++++++++++++++++
 arch/arm/mach-tango/smc.h     |  4 +++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-tango/platsmp.c b/arch/arm/mach-tango/platsmp.c
index a21f55e000d2..ff495f6b6f40 100644
--- a/arch/arm/mach-tango/platsmp.c
+++ b/arch/arm/mach-tango/platsmp.c
@@ -9,8 +9,25 @@ static int tango_boot_secondary(unsigned int cpu, struct task_struct *idle)
 	return 0;
 }
 
+#ifdef CONFIG_HOTPLUG_CPU
+static int tango_cpu_kill(unsigned int cpu)
+{
+	return tango_aux_core_kill(cpu);
+}
+
+static void tango_cpu_die(unsigned int cpu)
+{
+	tango_aux_core_die(cpu);
+}
+#else
+#define tango_cpu_kill	NULL
+#define tango_cpu_die	NULL
+#endif
+
 static const struct smp_operations tango_smp_ops __initconst = {
 	.smp_boot_secondary	= tango_boot_secondary,
+	.cpu_kill		= tango_cpu_kill,
+	.cpu_die		= tango_cpu_die,
 };
 
 CPU_METHOD_OF_DECLARE(tango4_smp, "sigma,tango4-smp", &tango_smp_ops);
diff --git a/arch/arm/mach-tango/smc.h b/arch/arm/mach-tango/smc.h
index 7a4af35cc390..3d31f984f44c 100644
--- a/arch/arm/mach-tango/smc.h
+++ b/arch/arm/mach-tango/smc.h
@@ -2,4 +2,6 @@ extern int tango_smc(unsigned int val, unsigned int service);
 
 #define tango_set_l2_control(val)	tango_smc(val, 0x102)
 #define tango_start_aux_core(val)	tango_smc(val, 0x104)
-#define tango_set_aux_boot_addr(val)	tango_smc((unsigned int)val, 0x105)
+#define tango_set_aux_boot_addr(val)	tango_smc(val, 0x105)
+#define tango_aux_core_die(val)		tango_smc(val, 0x121)
+#define tango_aux_core_kill(val)	tango_smc(val, 0x122)
-- 
2.8.2

             reply	other threads:[~2016-06-15 15:20 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-15 15:19 Mason [this message]
2016-06-15 15:19 ` [PATCH] ARM: tango: add HOTPLUG_CPU support Mason

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=57617213.9030804@free.fr \
    --to=slash.tmp@free.fr \
    --cc=arnd@arndb.de \
    --cc=khilman@kernel.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=linux@arm.linux.org.uk \
    --cc=rjw@rjwysocki.net \
    --cc=sf84@laposte.net \
    --cc=thibaud_cornic@sigmadesigns.com \
    --cc=thomas.petazzoni@free-electrons.com \
    /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
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.