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From: srinivas.kandagatla@linaro.org
To: will.deacon@arm.com, robin.murphy@arm.com, bjorn.andersson@linaro.org
Cc: joro@8bytes.org, ohad@wizery.com,
	linux-arm-kernel@lists.infradead.org,
	iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
	linux-remoteproc@vger.kernel.org,
	Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [PATCH 3/3] iommu: armsmmu: set iommu ops for rpmsg bus
Date: Fri,  2 Mar 2018 14:55:31 +0000	[thread overview]
Message-ID: <20180302145531.20463-4-srinivas.kandagatla@linaro.org> (raw)
In-Reply-To: <20180302145531.20463-1-srinivas.kandagatla@linaro.org>

From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

On Qualcomm SoCs, ADSP exposes many functions like audio and
others. These services need iommu access to allocate any
memory for the DSP. As these drivers are childeren of
rpmsg bus, able to allocate memory from iommus is basic
requirement. So set arm smmu iommu ops for this bus type.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/iommu/arm-smmu.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index e6920d32ac9e..9b63489af15c 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -53,6 +53,7 @@
 #include <linux/spinlock.h>
 
 #include <linux/amba/bus.h>
+#include <linux/rpmsg.h>
 
 #include "io-pgtable.h"
 #include "arm-smmu-regs.h"
@@ -2168,6 +2169,10 @@ static void arm_smmu_bus_init(void)
 		bus_set_iommu(&pci_bus_type, &arm_smmu_ops);
 	}
 #endif
+#ifdef CONFIG_RPMSG
+	if (!iommu_present(&rpmsg_bus))
+		bus_set_iommu(&rpmsg_bus, &arm_smmu_ops);
+#endif
 }
 
 static int arm_smmu_device_probe(struct platform_device *pdev)
-- 
2.15.1

WARNING: multiple messages have this Message-ID (diff)
From: srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org
To: will.deacon-5wv7dgnIgG8@public.gmane.org,
	robin.murphy-5wv7dgnIgG8@public.gmane.org,
	bjorn.andersson-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org
Cc: ohad-Ix1uc/W3ht7QT0dZR+AlfA@public.gmane.org,
	linux-remoteproc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
	Srinivas Kandagatla
	<srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: [PATCH 3/3] iommu: armsmmu: set iommu ops for rpmsg bus
Date: Fri,  2 Mar 2018 14:55:31 +0000	[thread overview]
Message-ID: <20180302145531.20463-4-srinivas.kandagatla@linaro.org> (raw)
In-Reply-To: <20180302145531.20463-1-srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>

From: Srinivas Kandagatla <srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>

On Qualcomm SoCs, ADSP exposes many functions like audio and
others. These services need iommu access to allocate any
memory for the DSP. As these drivers are childeren of
rpmsg bus, able to allocate memory from iommus is basic
requirement. So set arm smmu iommu ops for this bus type.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
---
 drivers/iommu/arm-smmu.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index e6920d32ac9e..9b63489af15c 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -53,6 +53,7 @@
 #include <linux/spinlock.h>
 
 #include <linux/amba/bus.h>
+#include <linux/rpmsg.h>
 
 #include "io-pgtable.h"
 #include "arm-smmu-regs.h"
@@ -2168,6 +2169,10 @@ static void arm_smmu_bus_init(void)
 		bus_set_iommu(&pci_bus_type, &arm_smmu_ops);
 	}
 #endif
+#ifdef CONFIG_RPMSG
+	if (!iommu_present(&rpmsg_bus))
+		bus_set_iommu(&rpmsg_bus, &arm_smmu_ops);
+#endif
 }
 
 static int arm_smmu_device_probe(struct platform_device *pdev)
-- 
2.15.1

WARNING: multiple messages have this Message-ID (diff)
From: srinivas.kandagatla@linaro.org (srinivas.kandagatla at linaro.org)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/3] iommu: armsmmu: set iommu ops for rpmsg bus
Date: Fri,  2 Mar 2018 14:55:31 +0000	[thread overview]
Message-ID: <20180302145531.20463-4-srinivas.kandagatla@linaro.org> (raw)
In-Reply-To: <20180302145531.20463-1-srinivas.kandagatla@linaro.org>

From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

On Qualcomm SoCs, ADSP exposes many functions like audio and
others. These services need iommu access to allocate any
memory for the DSP. As these drivers are childeren of
rpmsg bus, able to allocate memory from iommus is basic
requirement. So set arm smmu iommu ops for this bus type.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/iommu/arm-smmu.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index e6920d32ac9e..9b63489af15c 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -53,6 +53,7 @@
 #include <linux/spinlock.h>
 
 #include <linux/amba/bus.h>
+#include <linux/rpmsg.h>
 
 #include "io-pgtable.h"
 #include "arm-smmu-regs.h"
@@ -2168,6 +2169,10 @@ static void arm_smmu_bus_init(void)
 		bus_set_iommu(&pci_bus_type, &arm_smmu_ops);
 	}
 #endif
+#ifdef CONFIG_RPMSG
+	if (!iommu_present(&rpmsg_bus))
+		bus_set_iommu(&rpmsg_bus, &arm_smmu_ops);
+#endif
 }
 
 static int arm_smmu_device_probe(struct platform_device *pdev)
-- 
2.15.1

  parent reply	other threads:[~2018-03-02 14:55 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-02 14:55 [PATCH 0/3] drivers: rpmsg: make rpmsg bus DMA capable srinivas.kandagatla
2018-03-02 14:55 ` srinivas.kandagatla at linaro.org
2018-03-02 14:55 ` srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A
2018-03-02 14:55 ` [PATCH 1/3] rpmsg: core: export rpmsg bus type srinivas.kandagatla
2018-03-02 14:55   ` srinivas.kandagatla at linaro.org
2018-03-02 14:55   ` srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A
2018-03-02 15:25   ` Robin Murphy
2018-03-02 15:25     ` Robin Murphy
2018-03-02 15:25     ` Robin Murphy
2018-03-02 14:55 ` [PATCH 2/3] rpmsg: core: make rpmsg bus DMA capable srinivas.kandagatla
2018-03-02 14:55   ` srinivas.kandagatla at linaro.org
2018-03-02 14:55   ` srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A
2018-03-02 16:14   ` Robin Murphy
2018-03-02 16:14     ` Robin Murphy
2018-03-02 16:14     ` Robin Murphy
2018-03-02 16:40     ` Srinivas Kandagatla
2018-03-02 16:40       ` Srinivas Kandagatla
2018-03-18 22:47     ` Bjorn Andersson
2018-03-18 22:47       ` Bjorn Andersson
2018-03-18 22:47       ` Bjorn Andersson
2018-03-02 14:55 ` srinivas.kandagatla [this message]
2018-03-02 14:55   ` [PATCH 3/3] iommu: armsmmu: set iommu ops for rpmsg bus srinivas.kandagatla at linaro.org
2018-03-02 14:55   ` srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A
2018-03-02 16:59   ` Robin Murphy
2018-03-02 16:59     ` Robin Murphy
2018-03-02 16:59     ` Robin Murphy
2018-05-07 19:28     ` Bjorn Andersson
2018-05-07 19:28       ` Bjorn Andersson
2018-05-07 19:28       ` Bjorn Andersson
2018-05-11 18:24       ` Robin Murphy
2018-05-11 18:24         ` Robin Murphy
2018-05-11 18:24         ` Robin Murphy

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