Hi Shannon,
Thank you for reporting this issue, the device tree file was indeed missing.
To solve the problem, you can apply the following patch to the
repository you mentioned
(git://github.com/virtualopensystems/arm-dts.git).
For your information, soon we will update the guide with a newer version
of VFIO with this issue fixed.
Thank you,
alvise
---
fast_models/rtsm_ve-cortex_a15x4_a7x4.dts | 100
+++++++++++++++++++++++++++++-
1 file changed, 97 insertions(+), 3 deletions(-)
diff --git a/fast_models/rtsm_ve-cortex_a15x4_a7x4.dts
b/fast_models/rtsm_ve-cortex_a15x4_a7x4.dts
index ef1275b..79c6af2 100644
--- a/fast_models/rtsm_ve-cortex_a15x4_a7x4.dts
+++ b/fast_models/rtsm_ve-cortex_a15x4_a7x4.dts
@@ -142,7 +142,7 @@
cpu7: cpu@7 {
device_type = "cpu";
compatible = "arm,cortex-a7";
- reg = <0x104>;
+ reg = <0x103>;
cluster = <&cluster1>;
core = <&core7>;
};
@@ -159,7 +159,7 @@
#address-cells = <0>;
interrupt-controller;
reg = <0 0x2c001000 0 0x1000>,
- <0 0x2c002000 0 0x2000>,
+ <0 0x2c002000 0 0x1000>,
<0 0x2c004000 0 0x2000>,
<0 0x2c006000 0 0x2000>;
interrupts = <1 9 0xf04>;
@@ -183,6 +183,101 @@
<1 10 0xf08>;
};
+ smmu@2c0b0000 {
+ compatible = "arm,smmu-v2";
+ reg = <0x0 0x2c0b0000 0x0 0x10000>;
+ #global-interrupts = <2>;
+ interrupts = <0 58 4>,
+ <0 59 4>,
+ <0 60 4>,
+ <0 60 4>,
+ <0 60 4>,
+ <0 60 4>,
+ <0 60 4>,
+ <0 60 4>,
+ <0 60 4>;
+ mmu-masters = <&dma0 0x0 0x8>,
+ <&dma1 0x1 0x9>,
+ <&dma2 0x2 0xa>,
+ <&dma3 0x3 0xb>;
+ };
+
+ dma0: dma@2c0a0000 {
+ compatible = "arm,pl330";
+ reg = <0 0x2c0a0000 0 0x1000>;
+ interrupts = <0 64 4>,
+ <0 65 4>,
+ <0 66 4>,
+ <0 67 4>,
+ <0 68 4>,
+ <0 69 4>,
+ <0 70 4>,
+ <0 71 4>;
+ #dma-cells = <1>;
+ #stream-id-cells = <2>;
+ clocks = <&oscclk6a>;
+ clock-names = "apb_pclk";
+ };
+
+ dma1: dma@2c0a1000 {
+ compatible = "arm,pl330", "arm,primecell";
+ reg = <0 0x2c0a1000 0 0x1000>;
+ interrupts = <0 96 4>,
+ <0 97 4>,
+ <0 98 4>,
+ <0 99 4>,
+ <0 100 4>,
+ <0 101 4>,
+ <0 102 4>,
+ <0 103 4>;
+ #dma-cells = <1>;
+ #stream-id-cells = <2>;
+ clocks = <&oscclk6a>;
+ clock-names = "apb_pclk";
+ };
+
+ dma2: dma@2c0a2000 {
+ compatible = "arm,pl330", "arm,primecell";
+ reg = <0 0x2c0a2000 0 0x1000>;
+ interrupts = <0 128 4>,
+ <0 129 4>,
+ <0 130 4>,
+ <0 131 4>,
+ <0 132 4>,
+ <0 133 4>,
+ <0 134 4>,
+ <0 135 4>;
+ #dma-cells = <1>;
+ #stream-id-cells = <2>;
+ clocks = <&oscclk6a>;
+ clock-names = "apb_pclk";
+ };
+
+ dma3: dma@2c0a3000 {
+ compatible = "arm,pl330", "arm,primecell";
+ reg = <0 0x2c0a3000 0 0x1000>;
+ interrupts = <0 160 4>,
+ <0 161 4>,
+ <0 162 4>,
+ <0 163 4>,
+ <0 164 4>,
+ <0 165 4>,
+ <0 166 4>,
+ <0 167 4>;
+ #dma-cells = <1>;
+ #stream-id-cells = <2>;
+ clocks = <&oscclk6a>;
+ clock-names = "apb_pclk";
+ };
+
+ oscclk6a: oscclk6a {
+ /* Reference 24MHz clock */
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <24000000>;
+ clock-output-names = "oscclk6a";
+ };
+
smb {
compatible = "simple-bus";
@@ -244,4 +339,3 @@
/include/ "rtsm_ve-motherboard.dtsi"
};
};
-
--
1.9.1
On 18/06/2014 04:33, Shannon Zhao wrote:
> Hi Antonios and all,
>
> Recently, I want to test vfio on ARM and refer to this document "http://www.virtualopensystems.com/en/solutions/guides/vfio-on-arm/"; .
> Following is my test steps.
>
> 1. Get kernel src
> git clone git://github.com/virtualopensystems/linux-kvm-arm.git
> cd linux-kvm-arm
> git checkout origin/vfio-platform-v4
>
> 2. Get kernel config
> http://www.virtualopensystems.com/downloads/guides/kvm_on_arm/kernel-config > .config
>
> 3. Make menuconfig the kernel
> enable the KVM, SMMU and VFIO configuration options for the host kernel
>
> 4. Compile the kernel
> CROSS_COMPILE=arm-linux-gnueabi- ARCH=arm make zImage
>
> 5. Build a device tree
> There isn't rtsm_ve-cortex_a15x4_a7x4.dts in the directory "arch/arm/boot/dts/".
> So I download it from this git "git://github.com/virtualopensystems/arm-dts.git".
> ./scripts/dtc/dtc -O dtb -o host-a15.dtb ../arm-dts/fast_models/rtsm_ve-cortex_a15x4_a7x4.dts
> But the rtsm_ve-cortex_a15x4_a7x4.dts doesn't contain the DMA or SMMU device.
>
> 6. Launch the model
> Following is the boot_model.sh.
> #!/bin/bash
>
> MODEL_PATH='/root/ARM/FastModelsPortfolio_8.2/examples/FVP_VE/Build_Cortex-A15x4-A7x4-MMU400-DMA330/Linux64-Debug-GCC-4.4'
>
> $MODEL_PATH/isim_system \
> -a coretile.cluster0.*=/home/vfio/linux-system-semi.axf \
> -a coretile.cluster1.*=/home/vfio/linux-system-semi.axf \
> -C motherboard.smsc_91c111.enabled=1 \
> -C motherboard.hostbridge.interfaceName="ARMroot" \
> -C coretile.cluster0.cpu0.semihosting-enable=1 \
> -C coretile.dmac0_int_base=64 \
> -C coretile.dmac1_int_base=96 \
> -C coretile.dmac2_int_base=128 \
> -C coretile.dmac3_int_base=168 \
> -C coretile.mmu400_dma330.dmac0.p_irq_nsecure="true" \
> -C coretile.mmu400_dma330.dmac1.p_irq_nsecure="true" \
> -C coretile.mmu400_dma330.dmac2.p_irq_nsecure="true" \
> -C coretile.mmu400_dma330.dmac3.p_irq_nsecure="true" \
> -C coretile.cluster0.cpu0.semihosting-cmd_line="\
> --kernel /home/vfio/zImage \
> --initrd /home/vfio/filesystem.cpio.gz \
> --dtb host-a15.dtb -- earlyprintk console=ttyAMA0 mem=2048M "
> It launched successfully. There is "vfio_platform" in the directory, but I can't see any DMA decive in the directory "/sys/devices".
>
> PS: I also try to enable the kernel configuration option for DMA. "DMA Engine support --> DMA API Driver for PL330".
> Is there something I'm wrong? Is there any way I can get the right device tree and kernel config?
> Look forward to your reply.
>
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