| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20180724101001.31965-2-Eugeniy.Paltsev@synopsys.com>
Date: Tue, 24 Jul 2018 13:09:58 +0300
From: Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
To: linux-snps-arc@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
Vineet Gupta <Vineet.Gupta1@...opsys.com>,
Alexey Brodkin <Alexey.Brodkin@...opsys.com>, hch@....de,
Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
Subject: [PATCH 1/4] ARC: DTS: mark DMA devices connected through IOC port as dma-coherent
Mark DMA devices on AXS103 and HSDK boards connected through IOC
port as dma-coherent.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
---
arch/arc/boot/dts/axc003.dtsi | 26 ++++++++++++++++++++++++++
arch/arc/boot/dts/axc003_idu.dtsi | 26 ++++++++++++++++++++++++++
arch/arc/boot/dts/hsdk.dts | 4 ++++
3 files changed, 56 insertions(+)
diff --git a/arch/arc/boot/dts/axc003.dtsi b/arch/arc/boot/dts/axc003.dtsi
index dc91c663bcc0..d75d65ddf8e3 100644
--- a/arch/arc/boot/dts/axc003.dtsi
+++ b/arch/arc/boot/dts/axc003.dtsi
@@ -93,6 +93,32 @@
};
};
+ /*
+ * Mark DMA peripherals connected via IOC port as dma-coherent. We do
+ * it via overlay because peripherals defined in axs10x_mb.dtsi are
+ * used for both AXS101 and AXS103 boards and only AXS103 has IOC (so
+ * only AXS103 board has HW-coherent DMA peripherals)
+ * We don't need to mark pgu@...00 as dma-coherent because it uses
+ * external DMA buffer located outside of IOC aperture.
+ */
+ axs10x_mb {
+ ethernet@...8000 {
+ dma-coherent;
+ };
+
+ ehci@...0000 {
+ dma-coherent;
+ };
+
+ ohci@...0000 {
+ dma-coherent;
+ };
+
+ mmc@...5000 {
+ dma-coherent;
+ };
+ };
+
/*
* The DW APB ICTL intc on MB is connected to CPU intc via a
* DT "invisible" DW APB GPIO block, configured to simply pass thru
diff --git a/arch/arc/boot/dts/axc003_idu.dtsi b/arch/arc/boot/dts/axc003_idu.dtsi
index 69ff4895f2ba..a05bb737ea63 100644
--- a/arch/arc/boot/dts/axc003_idu.dtsi
+++ b/arch/arc/boot/dts/axc003_idu.dtsi
@@ -100,6 +100,32 @@
};
};
+ /*
+ * Mark DMA peripherals connected via IOC port as dma-coherent. We do
+ * it via overlay because peripherals defined in axs10x_mb.dtsi are
+ * used for both AXS101 and AXS103 boards and only AXS103 has IOC (so
+ * only AXS103 board has HW-coherent DMA peripherals)
+ * We don't need to mark pgu@...00 as dma-coherent because it uses
+ * external DMA buffer located outside of IOC aperture.
+ */
+ axs10x_mb {
+ ethernet@...8000 {
+ dma-coherent;
+ };
+
+ ehci@...0000 {
+ dma-coherent;
+ };
+
+ ohci@...0000 {
+ dma-coherent;
+ };
+
+ mmc@...5000 {
+ dma-coherent;
+ };
+ };
+
/*
* This INTC is actually connected to DW APB GPIO
* which acts as a wire between MB INTC and CPU INTC.
diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts
index 006aa3de5348..ebb686c21393 100644
--- a/arch/arc/boot/dts/hsdk.dts
+++ b/arch/arc/boot/dts/hsdk.dts
@@ -176,6 +176,7 @@
phy-handle = <&phy0>;
resets = <&cgu_rst HSDK_ETH_RESET>;
reset-names = "stmmaceth";
+ dma-coherent;
mdio {
#address-cells = <1>;
@@ -194,12 +195,14 @@
compatible = "snps,hsdk-v1.0-ohci", "generic-ohci";
reg = <0x60000 0x100>;
interrupts = <15>;
+ dma-coherent;
};
ehci@...00 {
compatible = "snps,hsdk-v1.0-ehci", "generic-ehci";
reg = <0x40000 0x100>;
interrupts = <15>;
+ dma-coherent;
};
mmc@...0 {
@@ -212,6 +215,7 @@
clock-names = "biu", "ciu";
interrupts = <12>;
bus-width = <4>;
+ dma-coherent;
};
};
--
2.14.4
Powered by blists - more mailing lists