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.bhus...@freescale.com wrote: > > >> -----Original Message----- >> From: Shannon Zhao [mailto:zhaoshengl...@huawei.com] >> Sent: Thursday, June 19, 2014 5:47 PM >> To: Bhushan Bharat-R65777; Alvise Rigo; a.mota...@virtualopensystems.com; >> iommu@lists.linux-foundation.org; kvm...@lists.cs.columbia.edu >> Subject: Re: Vfio-on-arm: the device tree does not contain the DMA device >> >> >> >> On 2014/6/19 20:12, bharat.bhus...@freescale.com wrote: >>> >>> >>>> -----Original Message----- >>>> From: Shannon Zhao [mailto:zhaoshengl...@huawei.com] >>>> Sent: Thursday, June 19, 2014 5:38 PM >>>> To: Alvise Rigo; Bhushan Bharat-R65777; >>>> a.mota...@virtualopensystems.com; iommu@lists.linux-foundation.org; >>>> kvm...@lists.cs.columbia.edu >>>> 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.bhus...@freescale.com wrote: >>>>>>>>> >>>>>>>>> >>>>>>>>>> -----Original Message----- >>>>>>>>>> From: kvmarm-boun...@lists.cs.columbia.edu [mailto:kvmarm- >>>>>>>>>> boun...@lists.cs.columbia.edu] On Behalf Of Shannon Zhao >>>>>>>>>> Sent: Thursday, June 19, 2014 2:45 PM >>>>>>>>>> To: Alvise Rigo; a.mota...@virtualopensystems.com; >>>>>>>>>> iommu@lists.linux- foundation.org; kvm...@lists.cs.columbia.edu >>>>>>>>>> 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 >>>>>>>>>> kvm...@lists.cs.columbia.edu >>>>>>>>>> https://lists.cs.columbia.edu/mailman/listinfo/kvmarm >>>>>>>>> >>>>>>>>> . >>>>>>>>> >>>>>>>> >>>>>>> >>>>>>> . >>>>>>> >>>>>> >>>>> >>>>> . >>>>> >>>> >>>> -- >>>> Shannon >>> >>> >>> . >>> >> >> -- >> Shannon > > > . > -- Shannon _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
