linux-kernel - [PATCH v2 09/11] arm64: dts: ls1043a: use a pseudo-bus to constrain usb and sata dma size

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 14 Sep 2022 16:47:01 -0500
From:   Li Yang <leoyang.li@....com>
To:     shawnguo@...nel.org, devicetree@...r.kernel.org
Cc:     robh+dt@...nel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Laurentiu Tudor <laurentiu.tudor@....com>,
        Robin Murphy <robin.murphy@....com>,
        Li Yang <leoyang.li@....com>
Subject: [PATCH v2 09/11] arm64: dts: ls1043a: use a pseudo-bus to constrain usb and sata dma size

From: Laurentiu Tudor <laurentiu.tudor@....com>

Wrap the usb and sata controllers in an intermediate simple-bus and use
it to constrain the dma address size of these usb controllers to the 40
bits that they generate toward the interconnect.  This is required
because the SoC uses 48 bits address sizes and this mismatch would lead
to smmu context faults because the usb generates 40-bit addresses while
the smmu page tables are populated with 48-bit wide addresses.

Suggested-by: Robin Murphy <robin.murphy@....com>
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@....com>
Signed-off-by: Li Yang <leoyang.li@....com>
---
 .../arm64/boot/dts/freescale/fsl-ls1043a.dtsi | 92 ++++++++++---------
 1 file changed, 50 insertions(+), 42 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi
index 58c55335f09c..704f72caddd3 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi
@@ -816,51 +816,59 @@ QORIQ_CLK_PLL_DIV(1)>,
 					    QORIQ_CLK_PLL_DIV(1)>;
 		};
 
-		usb0: usb@...0000 {
-			compatible = "snps,dwc3";
-			reg = <0x0 0x2f00000 0x0 0x10000>;
-			interrupts = <0 60 0x4>;
-			dr_mode = "host";
-			snps,quirk-frame-length-adjustment = <0x20>;
-			snps,dis_rxdet_inp3_quirk;
-			usb3-lpm-capable;
-			snps,incr-burst-type-adjustment = <1>, <4>, <8>, <16>;
-			status = "disabled";
-		};
+		aux_bus: aux_bus {
+			#address-cells = <2>;
+			#size-cells = <2>;
+			compatible = "simple-bus";
+			ranges;
+			dma-ranges = <0x0 0x0 0x0 0x0 0x100 0x00000000>;
+
+			usb0: usb@...0000 {
+				compatible = "snps,dwc3";
+				reg = <0x0 0x2f00000 0x0 0x10000>;
+				interrupts = <0 60 IRQ_TYPE_LEVEL_HIGH>;
+				dr_mode = "host";
+				snps,quirk-frame-length-adjustment = <0x20>;
+				snps,dis_rxdet_inp3_quirk;
+				usb3-lpm-capable;
+				snps,incr-burst-type-adjustment = <1>, <4>, <8>, <16>;
+				status = "disabled";
+			};
 
-		usb1: usb@...0000 {
-			compatible = "snps,dwc3";
-			reg = <0x0 0x3000000 0x0 0x10000>;
-			interrupts = <0 61 0x4>;
-			dr_mode = "host";
-			snps,quirk-frame-length-adjustment = <0x20>;
-			snps,dis_rxdet_inp3_quirk;
-			usb3-lpm-capable;
-			snps,incr-burst-type-adjustment = <1>, <4>, <8>, <16>;
-			status = "disabled";
-		};
+			usb1: usb@...0000 {
+				compatible = "snps,dwc3";
+				reg = <0x0 0x3000000 0x0 0x10000>;
+				interrupts = <0 61 IRQ_TYPE_LEVEL_HIGH>;
+				dr_mode = "host";
+				snps,quirk-frame-length-adjustment = <0x20>;
+				snps,dis_rxdet_inp3_quirk;
+				usb3-lpm-capable;
+				snps,incr-burst-type-adjustment = <1>, <4>, <8>, <16>;
+				status = "disabled";
+			};
 
-		usb2: usb@...0000 {
-			compatible = "snps,dwc3";
-			reg = <0x0 0x3100000 0x0 0x10000>;
-			interrupts = <0 63 0x4>;
-			dr_mode = "host";
-			snps,quirk-frame-length-adjustment = <0x20>;
-			snps,dis_rxdet_inp3_quirk;
-			usb3-lpm-capable;
-			snps,incr-burst-type-adjustment = <1>, <4>, <8>, <16>;
-			status = "disabled";
-		};
+			usb2: usb@...0000 {
+				compatible = "snps,dwc3";
+				reg = <0x0 0x3100000 0x0 0x10000>;
+				interrupts = <0 63 IRQ_TYPE_LEVEL_HIGH>;
+				dr_mode = "host";
+				snps,quirk-frame-length-adjustment = <0x20>;
+				snps,dis_rxdet_inp3_quirk;
+				usb3-lpm-capable;
+				snps,incr-burst-type-adjustment = <1>, <4>, <8>, <16>;
+				status = "disabled";
+			};
 
-		sata: sata@...0000 {
-			compatible = "fsl,ls1043a-ahci";
-			reg = <0x0 0x3200000 0x0 0x10000>,
-				<0x0 0x20140520 0x0 0x4>;
-			reg-names = "ahci", "sata-ecc";
-			interrupts = <0 69 0x4>;
-			clocks = <&clockgen QORIQ_CLK_PLATFORM_PLL
-					    QORIQ_CLK_PLL_DIV(1)>;
-			dma-coherent;
+			sata: sata@...0000 {
+				compatible = "fsl,ls1043a-ahci";
+				reg = <0x0 0x3200000 0x0 0x10000>,
+					<0x0 0x20140520 0x0 0x4>;
+				reg-names = "ahci", "sata-ecc";
+				interrupts = <0 69 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clockgen QORIQ_CLK_PLATFORM_PLL
+						    QORIQ_CLK_PLL_DIV(1)>;
+				dma-coherent;
+			};
 		};
 
 		msi1: msi-controller1@...1000 {
-- 
2.37.1