From: Kent Yoder <key@linux.vnet.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: key@linux.vnet.ibm.com, rcj@linux.vnet.ibm.com,
linuxppc-dev@lists.ozlabs.org, linux-crypto@vger.kernel.org
Subject: [PATCH v3 02/17] powerpc: Add pseries update notifier for OFDT prop changes
Date: Thu, 12 Apr 2012 10:04:11 -0500 [thread overview]
Message-ID: <1334243051.18090.8.camel@key-ThinkPad-W510> (raw)
In-Reply-To: <1334242825.18090.4.camel@key-ThinkPad-W510>
This adds an update notifier mechanism for changes to properties in the
device tree. One use of this would be a device driver that needs to act
on changes to it's properties in the device tree after a live migration
or a dynamic activation that is triggered by updates to ofdt properties.
Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com>
Signed-off-by: Kent Yoder <key@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/pSeries_reconfig.h | 12 ++++++++++++
arch/powerpc/platforms/pseries/reconfig.c | 7 +++++++
2 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/pSeries_reconfig.h b/arch/powerpc/include/asm/pSeries_reconfig.h
index 23cd6cc..c07edfe 100644
--- a/arch/powerpc/include/asm/pSeries_reconfig.h
+++ b/arch/powerpc/include/asm/pSeries_reconfig.h
@@ -13,6 +13,18 @@
#define PSERIES_RECONFIG_REMOVE 0x0002
#define PSERIES_DRCONF_MEM_ADD 0x0003
#define PSERIES_DRCONF_MEM_REMOVE 0x0004
+#define PSERIES_UPDATE_PROPERTY 0x0005
+
+/**
+ * pSeries_reconfig_notify - Notifier value structure for OFDT property updates
+ *
+ * @node: Device tree node which owns the property being updated
+ * @property: Updated property
+ */
+struct pSeries_reconfig_prop_update {
+ struct device_node *node;
+ struct property *property;
+};
#ifdef CONFIG_PPC_PSERIES
extern int pSeries_reconfig_notifier_register(struct notifier_block *);
diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c
index 168651a..7b3bf76 100644
--- a/arch/powerpc/platforms/pseries/reconfig.c
+++ b/arch/powerpc/platforms/pseries/reconfig.c
@@ -103,11 +103,13 @@ int pSeries_reconfig_notifier_register(struct notifier_block *nb)
{
return blocking_notifier_chain_register(&pSeries_reconfig_chain, nb);
}
+EXPORT_SYMBOL_GPL(pSeries_reconfig_notifier_register);
void pSeries_reconfig_notifier_unregister(struct notifier_block *nb)
{
blocking_notifier_chain_unregister(&pSeries_reconfig_chain, nb);
}
+EXPORT_SYMBOL_GPL(pSeries_reconfig_notifier_unregister);
int pSeries_reconfig_notify(unsigned long action, void *p)
{
@@ -426,6 +428,7 @@ static int do_remove_property(char *buf, size_t bufsize)
static int do_update_property(char *buf, size_t bufsize)
{
struct device_node *np;
+ struct pSeries_reconfig_prop_update upd_value;
unsigned char *value;
char *name, *end, *next_prop;
int rc, length;
@@ -454,6 +457,10 @@ static int do_update_property(char *buf, size_t bufsize)
return -ENODEV;
}
+ upd_value.node = np;
+ upd_value.property = newprop;
+ pSeries_reconfig_notify(PSERIES_UPDATE_PROPERTY, &upd_value);
+
rc = prom_update_property(np, newprop, oldprop);
if (rc)
return rc;
--
1.7.1
next prev parent reply other threads:[~2012-04-12 15:08 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-12 15:00 [PATCH v3 00/17] Platform Facilities Option and crypto accelerators Kent Yoder
2012-04-12 15:04 ` [PATCH v3 01/17] powerpc: Add new hvcall constants to support PFO Kent Yoder
2012-04-12 15:04 ` Kent Yoder [this message]
2012-04-12 15:08 ` [PATCH v3 03/17] powerpc: Add PFO support to the VIO bus Kent Yoder
2012-05-01 3:06 ` Benjamin Herrenschmidt
2012-05-01 4:10 ` Benjamin Herrenschmidt
2012-05-10 19:08 ` Robert Jennings
2012-05-10 21:58 ` Benjamin Herrenschmidt
2012-05-14 0:32 ` Benjamin Herrenschmidt
2012-05-14 20:59 ` [PATCH v4 06/17] powerpc: crypto: nx driver code supporting nx encryption Kent Yoder
2012-05-14 21:05 ` [PATCH v4 07/17] powerpc: crypto: AES-CBC mode routines for " Kent Yoder
2012-05-14 21:05 ` [PATCH v4 08/17] powerpc: crypto: AES-CCM " Kent Yoder
2012-05-14 21:05 ` [PATCH v4 09/17] powerpc: crypto: AES-CTR " Kent Yoder
2012-05-14 21:05 ` [PATCH v4 10/17] powerpc: crypto: AES-ECB " Kent Yoder
2012-05-14 21:05 ` [PATCH v4 11/17] powerpc: crypto: AES-GCM " Kent Yoder
2012-05-14 21:06 ` [PATCH v4 12/17] powerpc: crypto: AES-XCBC " Kent Yoder
2012-05-14 21:06 ` [PATCH v4 13/17] powerpc: crypto: SHA256 hash " Kent Yoder
2012-05-14 21:06 ` [PATCH v4 14/17] powerpc: crypto: SHA512 " Kent Yoder
2012-04-12 15:08 ` [PATCH v3 04/17] hwrng: pseries - PFO-based hwrng driver Kent Yoder
2012-04-12 15:17 ` [PATCH v3 05/17] pseries: Enabled the PFO-based RNG accelerator Kent Yoder
2012-04-12 15:23 ` [PATCH v3 06/17] powerpc: crypto: nx driver code supporting nx encryption Kent Yoder
2012-04-12 15:24 ` [PATCH v3 07/17] powerpc: crypto: AES-CBC mode routines for " Kent Yoder
2012-04-12 15:28 ` [PATCH v3 08/17] powerpc: crypto: AES-CCM " Kent Yoder
2012-04-12 15:31 ` [PATCH v3 09/17] powerpc: crypto: AES-CTR " Kent Yoder
2012-04-12 15:31 ` [PATCH v3 10/17] powerpc: crypto: AES-ECB " Kent Yoder
2012-04-12 15:33 ` [PATCH v3 11/17] powerpc: crypto: AES-GCM " Kent Yoder
2012-04-12 15:38 ` [PATCH v3 12/17] powerpc: crypto: AES-XCBC " Kent Yoder
2012-04-12 15:38 ` [PATCH v3 13/17] powerpc: crypto: SHA256 hash " Kent Yoder
2012-04-12 15:38 ` [PATCH v3 14/17] powerpc: crypto: SHA512 " Kent Yoder
2012-04-12 15:38 ` [PATCH v3 15/17] powerpc: crypto: debugfs routines and docs for the nx device driver Kent Yoder
2012-04-12 15:39 ` [PATCH v3 16/17] powerpc: crypto: Build files " Kent Yoder
2012-04-12 15:39 ` [PATCH v3 17/17] powerpc: crypto: enable the PFO-based encryption device Kent Yoder
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