linux-kernel - [PATCH] arch/tile: allow querying cpu module information from the hypervisor

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Message-Id: <201203302105.q2UL59oM006311@farm-0012.internal.tilera.com>
Date:	Fri, 30 Mar 2012 16:21:17 -0400
From:	Chris Metcalf <cmetcalf@...era.com>
To:	Chris Metcalf <cmetcalf@...era.com>,
	Lucas De Marchi <lucas.demarchi@...fusion.mobi>,
	Kay Sievers <kay.sievers@...y.org>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org
Subject: [PATCH] arch/tile: allow querying cpu module information from the hypervisor

This just adds a few more attributes to the information Linux
can query from the hypervisor for the /sys/hypervisor/board/ directory,
providing part, serial#, revision#, and description for cpu modules
(as opposed to the board itself, or any mezzanine boards).

Signed-off-by: Chris Metcalf <cmetcalf@...era.com>
---
 arch/tile/include/hv/hypervisor.h |   14 +++++++++++++-
 arch/tile/kernel/sysfs.c          |    8 ++++++++
 2 files changed, 21 insertions(+), 1 deletions(-)

diff --git a/arch/tile/include/hv/hypervisor.h b/arch/tile/include/hv/hypervisor.h
index 3bc4045..5ae7faa 100644
--- a/arch/tile/include/hv/hypervisor.h
+++ b/arch/tile/include/hv/hypervisor.h
@@ -508,7 +508,19 @@ typedef enum {
   HV_CONFSTR_SWITCH_CONTROL  = 14,
 
   /** Chip revision level. */
-  HV_CONFSTR_CHIP_REV        = 15
+  HV_CONFSTR_CHIP_REV        = 15,
+
+  /** CPU module part number. */
+  HV_CONFSTR_CPUMOD_PART_NUM = 16,
+
+  /** CPU module serial number. */
+  HV_CONFSTR_CPUMOD_SERIAL_NUM = 17,
+
+  /** CPU module revision level. */
+  HV_CONFSTR_CPUMOD_REV      = 18,
+
+  /** Human-readable CPU module description. */
+  HV_CONFSTR_CPUMOD_DESC     = 19
 
 } HV_ConfstrQuery;
 
diff --git a/arch/tile/kernel/sysfs.c b/arch/tile/kernel/sysfs.c
index 71ae728..e25b0a8 100644
--- a/arch/tile/kernel/sysfs.c
+++ b/arch/tile/kernel/sysfs.c
@@ -93,6 +93,10 @@ HV_CONF_ATTR(mezz_part,		HV_CONFSTR_MEZZ_PART_NUM)
 HV_CONF_ATTR(mezz_serial,	HV_CONFSTR_MEZZ_SERIAL_NUM)
 HV_CONF_ATTR(mezz_revision,	HV_CONFSTR_MEZZ_REV)
 HV_CONF_ATTR(mezz_description,	HV_CONFSTR_MEZZ_DESC)
+HV_CONF_ATTR(cpumod_part,	HV_CONFSTR_CPUMOD_PART_NUM)
+HV_CONF_ATTR(cpumod_serial,	HV_CONFSTR_CPUMOD_SERIAL_NUM)
+HV_CONF_ATTR(cpumod_revision,	HV_CONFSTR_CPUMOD_REV)
+HV_CONF_ATTR(cpumod_description,HV_CONFSTR_CPUMOD_DESC)
 HV_CONF_ATTR(switch_control,	HV_CONFSTR_SWITCH_CONTROL)
 
 static struct attribute *board_attrs[] = {
@@ -104,6 +108,10 @@ static struct attribute *board_attrs[] = {
 	&dev_attr_mezz_serial.attr,
 	&dev_attr_mezz_revision.attr,
 	&dev_attr_mezz_description.attr,
+	&dev_attr_cpumod_part.attr,
+	&dev_attr_cpumod_serial.attr,
+	&dev_attr_cpumod_revision.attr,
+	&dev_attr_cpumod_description.attr,
 	&dev_attr_switch_control.attr,
 	NULL
 };
-- 
1.6.5.2

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