Re: Vfio-on-arm: the device tree does not contain the DMA device

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Hi,

On Tue, Jun 24, 2014 at 8:59 AM, Shannon Zhao <zhaoshenglong@xxxxxxxxxx> wrote:
> Hi Alvise,
>
> Thanks for your help.
> Now I can see /dev/vfio/vfio and /dev/vfio/0 after executing "echo 2c0a0000.dma > /sys/bus/platform/drivers/vfio-platform/vfio_bind".
> But when using qemu to start guest, there is an error :
>
> -nographic can not be used with -daemonize
> char device redirected to /dev/pts/3 (label pty0-base)
> PL330_VFIO: === VFIO device file descriptor 13 ===
> Device has 1 region(s):
> PL330_VFIO: - Region 0: size=0x1000 offset=0x2c0a0000 flags=0x7
> PL330_VFIO: - IRQ 0: range of 1, flags=0x7
> ------------[ cut here ]------------
> kernel BUG at mm/slub.c:3386!
> Internal error: Oops - BUG: 0 [#1] SMP ARM
> Modules linked in:
> CPU: 2 PID: 1746 Comm: qemu-system-arm Tainted: G        W    3.14.0-rc1+ #19
> task: ee665580 ti: ed0b8000 task.ti: ed0b8000
> PC is at kfree+0x128/0x134
> LR is at vfio_set_trigger.isra.5+0x40/0x104
> pc : [<800d9e3c>]    lr : [<80319094>]    psr: 400f0013
> sp : ed0b9e64  ip : 000800f3  fp : 000014ac
> r10: 00000000  r9 : ed0b8000  r8 : edeb3b80
> r7 : 0000000e  r6 : 80620584  r5 : 00000000  r4 : eea0b000
> r3 : 00000400  r2 : 800f38b0  r1 : eea0ce60  r0 : 00000400
> Flags: nZcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
> Control: 30c53c7d  Table: eddac080  DAC: 00000000
> Process qemu-system-arm (pid: 1746, stack limit = 0xed0b8240)
> Stack: (0xed0b9e64 to 0xed0ba000)
> 9e60:          ee603700 00000000 ee603700 0000000e edeb3b80 00000000 80319094
> 9e80: ee603700 00003b6e 00000000 edeb3b80 ee603700 00003b6e 0000000d 80319208
> 9ea0: 0000000e edeb3b80 80492a18 edeb3b80 ee57f780 80319690 00000024 008b2074
> 9ec0: 008b2074 8031886c 00000001 008b2074 00000018 00000024 00000000 00000000
> 9ee0: 00000001 00000004 00000001 00000001 ee088e70 008b2060 ee57f780 803155d0
> 9f00: 803155b0 800ef430 80477a58 00080802 ed0b8000 800e1358 00000020 ed0b9f50
> 9f20: ed0b9f60 00000003 8061e808 00080802 ed0b9f60 800e14f0 00000000 806522f8
> 9f40: 80477a58 8061e808 ede4c1c0 8011af18 00000000 00000009 8053bbc0 00000000
> 9f60: ee683610 00000001 ee57f780 008b2060 00003b6e 0000000d ed0b8000 00000000
> 9f80: 000014ac 800ef9ac 0000000e 00000001 008b2060 00429eb0 0000000d 00000036
> 9fa0: 8001c464 8001c2e0 008b2060 00429eb0 0000000d 00003b6e 008b2060 00000001
> 9fc0: 008b2060 00429eb0 0000000d 00000036 00000000 7ea99040 0089a220 000014ac
> 9fe0: 003fa474 7ea98fc4 000bc5c8 76ceb2ec 200f0010 0000000d 00000000 8062c770
> [<800d9e3c>] (kfree) from [<80319094>] (vfio_set_trigger.isra.5+0x40/0x104)
> [<80319094>] (vfio_set_trigger.isra.5) from [<80319208>] (vfio_platform_set_irq_trigger+0xb0/0x144)
> [<80319208>] (vfio_platform_set_irq_trigger) from [<80319690>] (vfio_platform_set_irqs_ioctl+0x44/0x58)
> [<80319690>] (vfio_platform_set_irqs_ioctl) from [<8031886c>] (vfio_platform_ioctl+0x2e0/0x314)
> [<8031886c>] (vfio_platform_ioctl) from [<803155d0>] (vfio_device_fops_unl_ioctl+0x20/0x2c)
> [<803155d0>] (vfio_device_fops_unl_ioctl) from [<800ef430>] (do_vfs_ioctl+0x78/0x5b8)
> [<800ef430>] (do_vfs_ioctl) from [<800ef9ac>] (SyS_ioctl+0x3c/0x5c)
> [<800ef9ac>] (SyS_ioctl) from [<8001c2e0>] (ret_fast_syscall+0x0/0x30)
> Code: 15913038 e1a01003 e8bd45f0 eaff28e5 (e7f001f2)

I'm investigating what may have failed here.

>
> I'm using branch vfio-platform-v4 for kernel and pl330-vfio-dev for qemu.
> Following is qemu cmdline:
>         ./qemu-system-arm -enable-kvm -M vexpress-a15 -cpu cortex-a15 \
>         -chardev pty,id=pty0,mux=on -monitor chardev:pty0 \
>         -serial chardev:pty0 -daemonize \
>         -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-a15.dtb -initrd filesystem.cpio.gz  -nographic
>
> If I change to branch vfio-platform-v6 for kernel, there is "/dev/vfio/vfio". But no "/sys/bus/platform/drivers/vfio-platform/vfio_bind".
> And if I use above qemu cmdline to start guest, there is also an error :
>         PL330_VFIO: Group is not viable (not all devices bound for vfio)
>         qemu-system-arm: Error while probing real device.
>
>         qemu-system-arm: Initialization of device pl330 failed
>
> The usage about v4 and v6 has changed ?

Yes, the usage it a bit changed. The guide is suppose to work with the
v4 version of VFIO.

> And would you tell me when you will update the guideline about vfio-on-arm?

The new guide should be published this week and it will be based on a
more recent release of VFIO
and QEMU.

alvise

>
> Thanks,
> Shannon
> On 2014/6/20 16:37, Alvise Rigo wrote:
>> Linaro has a great set of pre-built images here http://releases.linaro.org/.
>>
>> For example these should work fine:
>> http://releases.linaro.org/13.12/ubuntu/saucy-images
>>
>> alvise
>>
>> Il 20/06/2014 10:23, Shannon Zhao ha scritto:
>>> Hi Alvise,
>>>
>>> I'm so sorry that I can't use qemu-debootstrap because my environment can't access some links using proxy.
>>> Are there other ways to get a proper fs?
>>>
>>> Thanks
>>> Shannon
>>>
>>> On 2014/6/20 15:15, Alvise Rigo wrote:
>>>> 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
>>>>>>
>>>>>>
>>>>>> .
>>>>>>
>>>>>
>>>>
>>>> .
>>>>
>>>
>>
>> .
>>
>
> --
> Shannon
>
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