Hi Shannon, If you follow the steps in the section "Creating the File System" of the guide you should be able to obtain a working fs. Regards, alvise Il 20/06/2014 04:57, Shannon Zhao ha scritto: > Hi Bharat, > > Thanks for your advice . > > I'm using the rootfs getting from the url "http://www.virtualopensystems.com/downloads/guides/kvm_on_arm/fs-alip-armel.cramfs";. > > Can you give me another link to get a newer rootfs? > > Thank you > Shannon > > On 2014/6/19 20:20, Bharat.Bhushan@xxxxxxxxxxxxx wrote: >> >> >>> -----Original Message----- >>> From: Shannon Zhao [mailto:zhaoshenglong@xxxxxxxxxx] >>> Sent: Thursday, June 19, 2014 5:47 PM >>> To: Bhushan Bharat-R65777; Alvise Rigo; a.motakis@xxxxxxxxxxxxxxxxxxxxxx; >>> iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx; kvmarm@xxxxxxxxxxxxxxxxxxxxx >>> Subject: Re: Vfio-on-arm: the device tree does not contain the DMA device >>> >>> >>> >>> On 2014/6/19 20:12, Bharat.Bhushan@xxxxxxxxxxxxx wrote: >>>> >>>> >>>>> -----Original Message----- >>>>> From: Shannon Zhao [mailto:zhaoshenglong@xxxxxxxxxx] >>>>> Sent: Thursday, June 19, 2014 5:38 PM >>>>> To: Alvise Rigo; Bhushan Bharat-R65777; >>>>> a.motakis@xxxxxxxxxxxxxxxxxxxxxx; iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx; >>>>> kvmarm@xxxxxxxxxxxxxxxxxxxxx >>>>> Subject: Re: Vfio-on-arm: the device tree does not contain the DMA >>>>> device >>>>> >>>>> Hi Alvise, >>>>> >>>>> I run following cmds : >>>>> echo 2c0a0000.dma > >>>>> /sys/bus/platform/drivers/vfio-platform/vfio_bind >>>> >>>> run "ls /dev/vfio/" before and after the above command >>> Hi Bharat, >>> >>> Nothing appeared either before or after the cmd "echo 2c0a0000.dma > >>> /sys/bus/platform/drivers/vfio-platform/vfio_bind". >>> There is only /dev/vfio. >> >> I am not sure, but may be you are using pretty old rootfs with broken udev rules. Try to fetch a newer rootfs form somewhere. >> >> Thanks >> -Bharat >> >> >>>> >>>> Thanks >>>> -Bharat >>>> >>>> >>>>> ./qemu-system-arm -enable-kvm -M vexpress-a15 -cpu cortex-a15 \ >>>>> -device >>>>> >>> pl330,vfio_group="/dev/vfio/0",vfio_device="2c0a0000.dma",vfio_container="/dev/v >>>>> fio/vfio" \ >>>>> -append "earlyprintk ip=dhcp console=ttyAMA0 rootwait" \ >>>>> -kernel zImage -dtb guest-a15.dtb -initrd filesystem.cpio.gz - >>>>> nographic But the error still exists. >>>>> qemu-system-arm: -device >>>>> >>> pl330,vfio_group=/dev/vfio/0,vfio_device=2c0a0000.dma,vfio_container=/dev/vfio/v >>>>> fio: Parameter 'driver' expects pluggable device type >>>>> >>>>> Thanks, >>>>> Shannon >>>>> >>>>> On 2014/6/19 19:26, Alvise Rigo wrote: >>>>>> >>>>>> >>>>>> Il 19/06/2014 13:11, Shannon Zhao ha scritto: >>>>>>> >>>>>>> >>>>>>> On 2014/6/19 18:47, Alvise Rigo wrote: >>>>>>>> Hi, >>>>>>>> >>>>>>>> Il 19/06/2014 11:38, Shannon Zhao ha scritto: >>>>>>>>> Hi Bharat, >>>>>>>>> >>>>>>>>> On 2014/6/19 17:19, Bharat.Bhushan@xxxxxxxxxxxxx wrote: >>>>>>>>>> >>>>>>>>>> >>>>>>>>>>> -----Original Message----- >>>>>>>>>>> From: kvmarm-bounces@xxxxxxxxxxxxxxxxxxxxx [mailto:kvmarm- >>>>>>>>>>> bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Shannon Zhao >>>>>>>>>>> Sent: Thursday, June 19, 2014 2:45 PM >>>>>>>>>>> To: Alvise Rigo; a.motakis@xxxxxxxxxxxxxxxxxxxxxx; >>>>>>>>>>> iommu@lists.linux- foundation.org; kvmarm@xxxxxxxxxxxxxxxxxxxxx >>>>>>>>>>> Subject: Re: Vfio-on-arm: the device tree does not contain the >>>>>>>>>>> DMA device >>>>>>>>>>> >>>>>>>>>>> Hi Alvise, >>>>>>>>>>> >>>>>>>>>>> Thanks for your reply. >>>>>>>>>>> I have apply the patch and could see the DMA devices. >>>>>>>>>>> But there is no vosys_dmatest int the directory >>>>>>>>>>> "/sys/kernel/debug/" after mounting debugfs. >>>>>>>>>>> I found that the branch vfio-platform-v4 doesn't contain the >>>>>>>>>>> module vosys_dmatest. >>>>>>>>>>> Then I port it from the branch pl330_dmatest and run vosys_dmatest >>>>> successfully. >>>>>>>>>>> >>>>>>>>>>> echo 1 > /sys/kernel/debug/vosys_dmatest/start >>>>>>>>>>> >>>>>>>>>>> [ 6145.343419] dmaengine: __dma_request_channel: success >>>>> (dma0chan0) >>>>>>>>>>> [ 6145.344000] vosys dmatest: callback: transfer completed >>>>>>>>>>> [ 6145.344147] vosys dmatest: tx completed >>>>>>>>>>> [ 6145.344589] vosys dmatest: source and destination match. >>>>>>>>>>> >>>>>>>>>>> Download the qemu and use following command to start a guest: >>>>>>>>>>> ./qemu-system-arm -enable-kvm -M vexpress-a15 -cpu cortex-a15 \ >>>>>>>>>>> -device >>>>> pl330,vfio_group="/dev/vfio/0",vfio_device="2c0a0000.dma",\ >>>>>>>>>>> vfio_container="/dev/vfio/vfio" \ >>>>>>>>>>> -append "earlyprintk ip=dhcp console=ttyAMA0 rootwait" \ >>>>>>>>>>> -kernel zImage -dtb guest.dtb -initrd filesystem.cpio.gz >>>>>>>>>>> - nographic An error reported: >>>>>>>>>>> qemu-system-arm: -device >>>>>>>>>>> pl330,vfio_group=/dev/vfio/0,vfio_device=2c0a0000.dma,: >>>>>>>>>> >>>>>>>>>> Why do we need to give "vfio_group=/dev/vfio/0" ? >>>>>>>>> I refer to the url >>>>> "http://www.virtualopensystems.com/en/solutions/guides/vfio-on-arm/";. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>>> could not open disk image vfio_container=/dev/vfio: >>>>>>>>>>> Could not open 'vfio_container=/dev/vfio': No such file or >>>>>>>>>>> directory >>>>>>>>>> >>>>>>>>>> Are you unbinding "2c0a0000.dma" from its driver and binding with "vfio- >>>>> playform" driver ? >>>>>>>>> How to unbind "2c0a0000.dma" from its driver? >>>>>>>>> I have tried following cmd to bind "2c0a0000.dma" with "vfio-playform" >>>>> driver. >>>>>>>>> echo 2c0a0000.dma > >>>>>>>>> /sys/bus/platform/drivers/vfio-platform/vfio_bind >>>>>>>>> But there is no /dev/vfio/0 or /dev/vfio/vfio . >>>>>>>> >>>>>>>> >>>>>>>> Can you please verify that while configuring the host you enabled: >>>>>>>> - Device Drivers -> IOMMU Hardware Support -> ARM Ltd. System MMU >>>>>>>> (SMMU) Support and >>>>>>>> - Device Drivers -> VFIO Non-Privileged userspace driver framework >>>>>>>> -> VFIO support for platform devices >>>>>>>> >>>>>>> Hi Alvise, >>>>>>> >>>>>>> I have checked the two configuration are enabled. >>>>>>> >>>>>>> Then try the following cmd, but another error reported: >>>>>>> qemu-system-arm: -device >>>>>>> pl330,vfio_group=/dev/vfio/0,vfio_device=2c0a0000.dma,vfio_container= >>>>>>> /dev/vfio/vfio: Parameter 'driver' expects pluggable device type >>>>>>> >>>>>>> Do I need to unbind the "2c0a0000.dma" from its driver and binding with >>>>> "vfio-platform" driver as Bharat mentioned ? >>>>>> >>>>>> Yes, the 2c0a0000.dma should not be bound to any driver at boot, so >>>>>> you just need to: >>>>>> echo 2c0a0000.dma > /sys/bus/platform/drivers/vfio-platform/vfio_bind >>>>>> to bind the device to the VFIO driver. >>>>> >>>>>> >>>>>> Regards, >>>>>> alvise >>>>>> >>>>>>> >>>>>>>> Then try to update the pl330-vfio-dev branch and run QEMU with the >>> following >>>>> command: >>>>>>>> >>>>>>>> ./qemu-system-arm -enable-kvm -M vexpress-a15 -cpu cortex-a15 \ >>>>>>>> -device >>>>> >>> pl330,vfio_group="/dev/vfio/0",vfio_device="2c0a0000.dma",vfio_container="/dev/v >>>>> fio/vfio" \ >>>>>>>> -append "earlyprintk ip=dhcp console=ttyAMA0 rootwait" \ >>>>>>>> -kernel zImage -dtb guest.dtb -initrd filesystem.cpio.gz >>>>>>>> >>>>>>>> that means without breaking the "-device pl330" options. >>>>>>>> >>>>>>>> Regards, >>>>>>>> alvise >>>>>>>> >>>>>>>>> >>>>>>>>>> >>>>>>>>>> Thanks >>>>>>>>>> -Bharat >>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> Is there something I'm wrong or do I miss some steps? >>>>>>>>>>> >>>>>>>>>>> Thank you, >>>>>>>>>>> Shannon >>>>>>>>>>> >>>>>>>>>>> On 2014/6/18 21:24, Alvise Rigo wrote: >>>>>>>>>>>> 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" >>>>>>>>>>>> }; >>>>>>>>>>>> }; >>>>>>>>>>>> - >>>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> -- >>>>>>>>>>> Shannon >>>>>>>>>>> >>>>>>>>>>> _______________________________________________ >>>>>>>>>>> kvmarm mailing list >>>>>>>>>>> kvmarm@xxxxxxxxxxxxxxxxxxxxx >>>>>>>>>>> https://lists.cs.columbia.edu/mailman/listinfo/kvmarm >>>>>>>>>> >>>>>>>>>> . >>>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>>> . >>>>>>>> >>>>>>> >>>>>> >>>>>> . >>>>>> >>>>> >>>>> -- >>>>> Shannon >>>> >>>> >>>> . >>>> >>> >>> -- >>> Shannon >> >> >> . >> > _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
