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From: Joerg Roedel <joro@8bytes.org>
To: Rob Herring <robh+dt@kernel.org>, grant.likely@linaro.org
Cc: Will Deacon <will.deacon@arm.com>,
	linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
	iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
	jroedel@suse.de
Subject: [PATCH 2/2] iommu/arm-smmu: Make use of phandle iterators in device-tree parsing
Date: Wed, 16 Mar 2016 17:42:07 +0100	[thread overview]
Message-ID: <1458146527-1133-3-git-send-email-joro@8bytes.org> (raw)
In-Reply-To: <1458146527-1133-1-git-send-email-joro@8bytes.org>

From: Joerg Roedel <jroedel@suse.de>

Remove the usage of of_parse_phandle_with_args() and replace
it by the phandle-iterator implementation to be able to
parse out all of the potentially present 128 stream-ids.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
 drivers/iommu/arm-smmu.c | 27 +++++++++++++++++++++------
 1 file changed, 21 insertions(+), 6 deletions(-)

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 59ee4b8..d5d6a1d 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -48,7 +48,7 @@
 #include "io-pgtable.h"
 
 /* Maximum number of stream IDs assigned to a single device */
-#define MAX_MASTER_STREAMIDS		MAX_PHANDLE_ARGS
+#define MAX_MASTER_STREAMIDS		128
 
 /* Maximum number of context banks per SMMU */
 #define ARM_SMMU_MAX_CBS		128
@@ -349,6 +349,12 @@ struct arm_smmu_domain {
 	struct iommu_domain		domain;
 };
 
+struct arm_smmu_phandle_args {
+	struct device_node *np;
+	int args_count;
+	uint32_t args[MAX_MASTER_STREAMIDS];
+};
+
 static struct iommu_ops arm_smmu_ops;
 
 static DEFINE_SPINLOCK(arm_smmu_devices_lock);
@@ -458,7 +464,7 @@ static int insert_smmu_master(struct arm_smmu_device *smmu,
 
 static int register_smmu_master(struct arm_smmu_device *smmu,
 				struct device *dev,
-				struct of_phandle_args *masterspec)
+				struct arm_smmu_phandle_args *masterspec)
 {
 	int i;
 	struct arm_smmu_master *master;
@@ -1716,7 +1722,8 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev)
 	struct arm_smmu_device *smmu;
 	struct device *dev = &pdev->dev;
 	struct rb_node *node;
-	struct of_phandle_args masterspec;
+	struct of_phandle_iterator it;
+	struct arm_smmu_phandle_args masterspec;
 	int num_irqs, i, err;
 
 	smmu = devm_kzalloc(dev, sizeof(*smmu), GFP_KERNEL);
@@ -1777,9 +1784,17 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev)
 
 	i = 0;
 	smmu->masters = RB_ROOT;
-	while (!of_parse_phandle_with_args(dev->of_node, "mmu-masters",
-					   "#stream-id-cells", i,
-					   &masterspec)) {
+
+	err = of_phandle_iterator_init(&it, dev->of_node,
+				       "mmu-masters", "#stream-id-cells", 0);
+	if (err)
+		goto out_put_masters;
+
+	while (!of_phandle_iterator_next(&it)) {
+		masterspec.np		= of_phandle_iterator_node(&it);
+		masterspec.args_count	= of_phandle_iterator_args(&it,
+								   masterspec.args,
+								   MAX_MASTER_STREAMIDS);
 		err = register_smmu_master(smmu, dev, &masterspec);
 		if (err) {
 			dev_err(dev, "failed to add master %s\n",
-- 
1.9.1

WARNING: multiple messages have this Message-ID (diff)
From: Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
To: Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org
Cc: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	jroedel-l3A5Bk7waGM@public.gmane.org
Subject: [PATCH 2/2] iommu/arm-smmu: Make use of phandle iterators in device-tree parsing
Date: Wed, 16 Mar 2016 17:42:07 +0100	[thread overview]
Message-ID: <1458146527-1133-3-git-send-email-joro@8bytes.org> (raw)
In-Reply-To: <1458146527-1133-1-git-send-email-joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>

From: Joerg Roedel <jroedel-l3A5Bk7waGM@public.gmane.org>

Remove the usage of of_parse_phandle_with_args() and replace
it by the phandle-iterator implementation to be able to
parse out all of the potentially present 128 stream-ids.

Signed-off-by: Joerg Roedel <jroedel-l3A5Bk7waGM@public.gmane.org>
---
 drivers/iommu/arm-smmu.c | 27 +++++++++++++++++++++------
 1 file changed, 21 insertions(+), 6 deletions(-)

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 59ee4b8..d5d6a1d 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -48,7 +48,7 @@
 #include "io-pgtable.h"
 
 /* Maximum number of stream IDs assigned to a single device */
-#define MAX_MASTER_STREAMIDS		MAX_PHANDLE_ARGS
+#define MAX_MASTER_STREAMIDS		128
 
 /* Maximum number of context banks per SMMU */
 #define ARM_SMMU_MAX_CBS		128
@@ -349,6 +349,12 @@ struct arm_smmu_domain {
 	struct iommu_domain		domain;
 };
 
+struct arm_smmu_phandle_args {
+	struct device_node *np;
+	int args_count;
+	uint32_t args[MAX_MASTER_STREAMIDS];
+};
+
 static struct iommu_ops arm_smmu_ops;
 
 static DEFINE_SPINLOCK(arm_smmu_devices_lock);
@@ -458,7 +464,7 @@ static int insert_smmu_master(struct arm_smmu_device *smmu,
 
 static int register_smmu_master(struct arm_smmu_device *smmu,
 				struct device *dev,
-				struct of_phandle_args *masterspec)
+				struct arm_smmu_phandle_args *masterspec)
 {
 	int i;
 	struct arm_smmu_master *master;
@@ -1716,7 +1722,8 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev)
 	struct arm_smmu_device *smmu;
 	struct device *dev = &pdev->dev;
 	struct rb_node *node;
-	struct of_phandle_args masterspec;
+	struct of_phandle_iterator it;
+	struct arm_smmu_phandle_args masterspec;
 	int num_irqs, i, err;
 
 	smmu = devm_kzalloc(dev, sizeof(*smmu), GFP_KERNEL);
@@ -1777,9 +1784,17 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev)
 
 	i = 0;
 	smmu->masters = RB_ROOT;
-	while (!of_parse_phandle_with_args(dev->of_node, "mmu-masters",
-					   "#stream-id-cells", i,
-					   &masterspec)) {
+
+	err = of_phandle_iterator_init(&it, dev->of_node,
+				       "mmu-masters", "#stream-id-cells", 0);
+	if (err)
+		goto out_put_masters;
+
+	while (!of_phandle_iterator_next(&it)) {
+		masterspec.np		= of_phandle_iterator_node(&it);
+		masterspec.args_count	= of_phandle_iterator_args(&it,
+								   masterspec.args,
+								   MAX_MASTER_STREAMIDS);
 		err = register_smmu_master(smmu, dev, &masterspec);
 		if (err) {
 			dev_err(dev, "failed to add master %s\n",
-- 
1.9.1

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WARNING: multiple messages have this Message-ID (diff)
From: joro@8bytes.org (Joerg Roedel)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2] iommu/arm-smmu: Make use of phandle iterators in device-tree parsing
Date: Wed, 16 Mar 2016 17:42:07 +0100	[thread overview]
Message-ID: <1458146527-1133-3-git-send-email-joro@8bytes.org> (raw)
In-Reply-To: <1458146527-1133-1-git-send-email-joro@8bytes.org>

From: Joerg Roedel <jroedel@suse.de>

Remove the usage of of_parse_phandle_with_args() and replace
it by the phandle-iterator implementation to be able to
parse out all of the potentially present 128 stream-ids.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
 drivers/iommu/arm-smmu.c | 27 +++++++++++++++++++++------
 1 file changed, 21 insertions(+), 6 deletions(-)

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 59ee4b8..d5d6a1d 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -48,7 +48,7 @@
 #include "io-pgtable.h"
 
 /* Maximum number of stream IDs assigned to a single device */
-#define MAX_MASTER_STREAMIDS		MAX_PHANDLE_ARGS
+#define MAX_MASTER_STREAMIDS		128
 
 /* Maximum number of context banks per SMMU */
 #define ARM_SMMU_MAX_CBS		128
@@ -349,6 +349,12 @@ struct arm_smmu_domain {
 	struct iommu_domain		domain;
 };
 
+struct arm_smmu_phandle_args {
+	struct device_node *np;
+	int args_count;
+	uint32_t args[MAX_MASTER_STREAMIDS];
+};
+
 static struct iommu_ops arm_smmu_ops;
 
 static DEFINE_SPINLOCK(arm_smmu_devices_lock);
@@ -458,7 +464,7 @@ static int insert_smmu_master(struct arm_smmu_device *smmu,
 
 static int register_smmu_master(struct arm_smmu_device *smmu,
 				struct device *dev,
-				struct of_phandle_args *masterspec)
+				struct arm_smmu_phandle_args *masterspec)
 {
 	int i;
 	struct arm_smmu_master *master;
@@ -1716,7 +1722,8 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev)
 	struct arm_smmu_device *smmu;
 	struct device *dev = &pdev->dev;
 	struct rb_node *node;
-	struct of_phandle_args masterspec;
+	struct of_phandle_iterator it;
+	struct arm_smmu_phandle_args masterspec;
 	int num_irqs, i, err;
 
 	smmu = devm_kzalloc(dev, sizeof(*smmu), GFP_KERNEL);
@@ -1777,9 +1784,17 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev)
 
 	i = 0;
 	smmu->masters = RB_ROOT;
-	while (!of_parse_phandle_with_args(dev->of_node, "mmu-masters",
-					   "#stream-id-cells", i,
-					   &masterspec)) {
+
+	err = of_phandle_iterator_init(&it, dev->of_node,
+				       "mmu-masters", "#stream-id-cells", 0);
+	if (err)
+		goto out_put_masters;
+
+	while (!of_phandle_iterator_next(&it)) {
+		masterspec.np		= of_phandle_iterator_node(&it);
+		masterspec.args_count	= of_phandle_iterator_args(&it,
+								   masterspec.args,
+								   MAX_MASTER_STREAMIDS);
 		err = register_smmu_master(smmu, dev, &masterspec);
 		if (err) {
 			dev_err(dev, "failed to add master %s\n",
-- 
1.9.1

  parent reply	other threads:[~2016-03-16 16:42 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-16 16:42 [RFC PATCH 0/2] of: Implement iterator for phandles Joerg Roedel
2016-03-16 16:42 ` Joerg Roedel
2016-03-16 16:42 ` Joerg Roedel
2016-03-16 16:42 ` [PATCH 1/2] " Joerg Roedel
2016-03-16 16:42   ` Joerg Roedel
2016-03-16 16:42   ` Joerg Roedel
2016-03-18 15:54   ` Rob Herring
2016-03-18 15:54     ` Rob Herring
2016-03-18 15:54     ` Rob Herring
2016-03-22 17:55     ` Joerg Roedel
2016-03-22 17:55       ` Joerg Roedel
2016-03-22 17:55       ` Joerg Roedel
2016-03-16 16:42 ` Joerg Roedel [this message]
2016-03-16 16:42   ` [PATCH 2/2] iommu/arm-smmu: Make use of phandle iterators in device-tree parsing Joerg Roedel
2016-03-16 16:42   ` Joerg Roedel

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