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Re: [Xen-devel] cubieboard2's sd/mmc driver on xen about DMA read data error



On Wed, 2014-04-02 at 00:10 +0800, æç wrote:
> Hi all,

Hello,

>      I have got this kernel with mmc driver on cubieboard2 from :
> https://github.com/jwrdegoede/linux-sunxi.git  (test branch) . 
>      I  have made the Xen's Dom0 configuration according
> this :http://wiki.xenproject.org/wiki/Mainline_Linux_Kernel_Configs.
> and the kernel can be booted by Xen4.4.
>      The question we met is that some CMD can be
> accepted(CMD7,CMD0 ....) and but some can't(CMD52,CMD5,CMD51). 
>      We have found that the CMD51 is attempted to read the data from
> SD card to memory through DMA , so we replaced all the dma_ops with
> xen_dma_ops , where it is in struct "dma_map_ops xen_swiotlb_dma_ops"
> in arch/arm/xen/mm.c.

Do I understand correctly that you have solved the issue by doing this?
If so then please could you send a patch. The process for submitting a
patch to Linux is described in Documentation/SubmittingPatches.

You should CC Stefano Stabellini since he is the maintainer of the Xen
bits in ARM Linux.

Many thanks,
Ian.

> Below is my kernel dump information, thanks everyone.
> 
> [    0.000000] Booting Linux on physical CPU 0x0
> [    0.000000] Initializing cgroup subsys cpuset
> [    0.000000] Initializing cgroup subsys cpu
> [    0.000000] Initializing cgroup subsys cpuacct
> [    0.000000] Linux version 3.13.0-rc4+ (root@Lenovo-G480) (gcc version 
> 4.7.2 (Ubuntu/Linaro 4.7.2-1ubuntu1) ) #36 SMP Tue Apr 4
> [    0.000000] CPU: ARMv7 Processor [410fc074] revision 4 (ARMv7), cr=10c5387d
> [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing 
> instruction cache
> [    0.000000] Machine model: Cubietech Cubieboard2
> [    0.000000] debug: ignoring loglevel setting.
> [    0.000000] Memory policy: Data cache writealloc
> [    0.000000] On node 0 totalpages: 131072
> [    0.000000] free_area_init_node: node 0, pgdat c0b40b00, node_mem_map 
> c0c42000
> [    0.000000]   Normal zone: 1024 pages used for memmap
> [    0.000000]   Normal zone: 0 pages reserved
> [    0.000000]   Normal zone: 131072 pages, LIFO batch:31
> [    0.000000] psci: probing function IDs from device-tree
> [    0.000000] PERCPU: Embedded 9 pages/cpu @c104b000 s13632 r8192 d15040 
> u36864
> [    0.000000] pcpu-alloc: s13632 r8192 d15040 u36864 alloc=9*4096
> [    0.000000] pcpu-alloc: [0] 0 
> [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total 
> pages: 130048
> [    0.000000] Kernel command line: console=hvc0,115200n8 debug 
> ignore_loglevel rw rootwait earlyprintk=xen clk_ignore_unused rof
> [    0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
> [    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
> [    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
> [    0.000000] allocated 1048576 bytes of page_cgroup
> [    0.000000] please try 'cgroup_disable=memory' option if you don't want 
> memory cgroups
> [    0.000000] Memory: 407828K/524288K available (5994K kernel code, 508K 
> rwdata, 2384K rodata, 2669K init, 953K bss, 116460K re)
> [    0.000000] Virtual kernel memory layout:
> [    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
> [    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
> [    0.000000]     vmalloc : 0xe0800000 - 0xff000000   ( 488 MB)
> [    0.000000]     lowmem  : 0xc0000000 - 0xe0000000   ( 512 MB)
> [    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
> [    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
> [    0.000000]       .text : 0xc0008000 - 0xc0836bf8   (8379 kB)
> [    0.000000]       .init : 0xc0837000 - 0xc0ad2540   (2670 kB)
> [    0.000000]       .data : 0xc0ad4000 - 0xc0b53050   ( 509 kB)
> [    0.000000]        .bss : 0xc0b53050 - 0xc0c415e8   ( 954 kB)
> [    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
> [    0.000000] Hierarchical RCU implementation.
> [    0.000000]  RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=1.
> [    0.000000] NR_IRQS:16 nr_irqs:16 16
> [    0.000000] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 
> 178956969942ns
> [    0.000000] sched_clock: 32 bits at 160MHz, resolution 6ns, wraps every 
> 26843545593ns
> [    0.000000] Architected cp15 timer(s) running at 24.00MHz (virt).
> [    0.000000] Switching to timer-based delay loop
> [    0.000000] Console: colour dummy device 80x30
> [    0.000526] Calibrating delay loop (skipped), value calculated using timer 
> frequency.. 48.00 BogoMIPS (lpj=240000)
> [    0.000541] pid_max: default: 32768 minimum: 301
> [    0.000724] Security Framework initialized
> [    0.000776] SELinux:  Initializing.
> [    0.000859] SELinux:  Starting in permissive mode
> [    0.001081] Mount-cache hash table entries: 512
> [    0.004444] Initializing cgroup subsys memory
> [    0.004497] Initializing cgroup subsys devices
> [    0.004508] Initializing cgroup subsys freezer
> [    0.004518] Initializing cgroup subsys net_cls
> [    0.004527] Initializing cgroup subsys blkio
> [    0.004536] Initializing cgroup subsys perf_event
> [    0.004665] CPU: Testing write buffer coherency: ok
> [    0.004713] ftrace: allocating 24448 entries in 48 pages
> [    0.038458] /cpus/cpu@0 missing clock-frequency property
> [    0.038487] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
> [    0.038528] Setting up static identity map for 0x405a9318 - 0x405a9370
> [    0.045722] Brought up 1 CPUs
> [    0.045739] SMP: Total of 1 processors activated.
> [    0.045747] CPU: All CPU(s) started in SVC mode.
> [    0.046768] devtmpfs: initialized
> [    0.051741] VFP support v0.3: implementor 41 architecture 2 part 30 
> variant 7 rev 4
> [    0.051918] Xen 4.4 support found, events_irq=31 gnttab_frame_pfn=b0000
> [    0.051998] xen:grant_table: Grant tables using version 1 layout
> [    0.052065] Grant table initialized
> [    0.058963] atomic64 test passed
> [    0.058980] pinctrl core: initialized pinctrl subsystem
> [    0.059502] regulator-dummy: no parameters
> [    0.059965] NET: Registered protocol family 16
> [    0.060581] Xen: initializing cpu0
> [    0.060913] DMA: preallocated 256 KiB pool for atomic coherent allocations
> [    0.062386] xen:swiotlb_xen: Warning: only able to allocate 4 MB for 
> software IO TLB
> [    0.064611] software IO TLB [mem 0x5f000000-0x5f400000] (4MB) mapped at 
> [df000000-df3fffff]
> [    0.067079] No ATAGs?
> [    0.067109] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 
> watchpoint registers.
> [    0.067120] hw-breakpoint: maximum watchpoint size is 8 bytes.
> [    0.067350] Serial: AMBA PL011 UART driver
> [    0.074656] bio: create slab <bio-0> at 0
> [    0.075468] xen:balloon: Initialising balloon driver
> [    0.075862] reg-fixed-voltage ahci-5v.3: could not find pctldev for node 
> /soc@01c00000/pinctrl@01c20800/ahci_pwr_pin@0, defere
> [    0.075888] platform ahci-5v.3: Driver reg-fixed-voltage requests probe 
> deferral
> [    0.075914] reg-fixed-voltage usb1-vbus.4: could not find pctldev for node 
> /soc@01c00000/pinctrl@01c20800/usb1_vbus_pin@0, dee
> [    0.075928] platform usb1-vbus.4: Driver reg-fixed-voltage requests probe 
> deferral
> [    0.075950] reg-fixed-voltage usb2-vbus.5: could not find pctldev for node 
> /soc@01c00000/pinctrl@01c20800/usb2_vbus_pin@0, dee
> [    0.075964] platform usb2-vbus.5: Driver reg-fixed-voltage requests probe 
> deferral
> [    0.077184] SCSI subsystem initialized
> [    0.077514] libata version 3.00 loaded.
> [    0.077805] usbcore: registered new interface driver usbfs
> [    0.077862] usbcore: registered new interface driver hub
> [    0.078016] usbcore: registered new device driver usb
> [    0.078250] pps_core: LinuxPPS API ver. 1 registered
> [    0.078259] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo 
> Giometti <giometti@xxxxxxxx>
> [    0.078285] PTP clock support registered
> [    0.079081] NetLabel: Initializing
> [    0.079093] NetLabel:  domain hash size = 128
> [    0.079099] NetLabel:  protocols = UNLABELED CIPSOv4
> [    0.079177] NetLabel:  unlabeled traffic allowed by default
> [    0.079598] Switched to clocksource arch_sys_counter
> [    0.137655] NET: Registered protocol family 2
> [    0.138683] TCP established hash table entries: 4096 (order: 2, 16384 
> bytes)
> [    0.138738] TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
> [    0.138804] TCP: Hash tables configured (established 4096 bind 4096)
> [    0.138880] TCP: reno registered
> [    0.138901] UDP hash table entries: 256 (order: 1, 8192 bytes)
> [    0.138935] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
> [    0.139299] NET: Registered protocol family 1
> [    0.139916] RPC: Registered named UNIX socket transport module.
> [    0.139933] RPC: Registered udp transport module.
> [    0.139940] RPC: Registered tcp transport module.
> [    0.139947] RPC: Registered tcp NFSv4.1 backchannel transport module.
> [    0.320150] Unpacking initramfs...
> [    0.320194] Initramfs unpacking failed: junk in compressed archive
> [    0.439015] Freeing initrd memory: 98304K (c8200000 - ce200000)
> [    0.441096] audit: initializing netlink socket (disabled)
> [    0.441168] type=2000 audit(0.430:1): initialized
> [    0.607368] zbud: loaded
> [    0.608062] VFS: Disk quotas dquot_6.5.2
> [    0.608340] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
> [    0.610963] NFS: Registering the id_resolver key type
> [    0.611036] Key type id_resolver registered
> [    0.611045] Key type id_legacy registered
> [    0.611065] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
> [    0.611433] msgmni has been set to 988
> [    0.611884] SELinux:  Registering netfilter hooks
> [    0.615413] alg: No test for stdrng (krng)
> [    0.615449] NET: Registered protocol family 38
> [    0.615770] Block layer SCSI generic (bsg) driver version 0.4 loaded 
> (major 251)
> [    0.615992] io scheduler noop registered
> [    0.616002] io scheduler deadline registered
> [    0.616260] io scheduler cfq registered (default)
> [    0.619227] sunxi-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver
> [    0.620530] xen:xen_evtchn: Event-channel device installed
> [    1.419789] console [hvc0] enabled
> [    1.423167] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
> [    1.430973] Serial: AMBA driver
> [    1.434822] [drm] Initialized drm 1.1.0 20060810
> [    1.441206] libphy: Fixed MDIO Bus: probed
> [    1.445778] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
> [    1.452327] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
> [    1.458724] usbcore: registered new interface driver usbserial
> [    1.464574] usbcore: registered new interface driver usbserial_generic
> [    1.471148] usbserial: USB Serial support registered for generic
> [    1.477426] mousedev: PS/2 mouse device common for all mice
> [    1.484234] #############+++sunxi_mmc_probe
> [    1.488799] sunxi-mci 1c0f000.mmc: base:0xe08be000 irq:64
> [    1.494197] probe success!!!!!!!!!
> [    1.497935] hidraw: raw HID events driver (C) Jiri Kosina
> [    1.503403] mmc0: mmc_rescan_try_freq: trying to init card at 400000 Hz
> [    1.510641] usbcore: registered new interface driver usbhid
> [    1.516141] usbhid: USB HID core driver
> [    1.520110] mmc0: clock 0Hz busmode 2 powermode 1 cs 0 Vdd 21 width 0 
> timing 0
> [    1.527329] Address of dma phy address is 5e838000 
> [    1.532297] sunxi-mci 1c0f000.mmc: power on!
> [    1.536795] drop_monitor: Initializing network drop monitor service
> [    1.543341] ip_tables: (C) 2000-2006 Netfilter Core Team
> [    1.548650] TCP: cubic registered
> [    1.552053] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    1.559700] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    1.564823] sunxi-mci 1c0f000.mmc: setting clk to 400000, rounded 400000
> [    1.571611] sunxi-mci 1c0f000.mmc: clk is now 400000
> [    1.576617] Initializing XFRM netlink socket
> [    1.581846] NET: Registered protocol family 10
> [    1.587180] mip6: Mobile IPv6
> [    1.590167] NET: Registered protocol family 17
> [    1.594730] Key type dns_resolver registered
> [    1.599201] ThumbEE CPU extension supported.
> [    1.603453] Registering SWP/SWPB emulation handler
> [    1.609056] registered taskstats version 1
> [    1.614021] ahci-5v: 5000 mV 
> [    1.617347] usb1-vbus: 5000 mV 
> [    1.620895] usb2-vbus: 5000 mV 
> [    1.624116] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
> [    1.649733] mmc0: starting CMD52 arg 00000c00 flags 00000195
> [    1.655319] 111111 sunxi mmc request
> [    1.658949] SDXC_IntErrBit:bbc2
> [    1.662210] sunxi-mci 1c0f000.mmc: cmd 52(80000174) arg c00 ie 0x0000bbc6 
> len 0
> [    1.670342] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    1.675500] in sunxi_mmc_irq msk_int=260
> [    1.679488] sunxi-mci 1c0f000.mmc: irq: rq df8a7e50 mi 00000104 idi 
> 00000000
> [    1.686573] in sunxi_mmc_irq host->int_sum=0
> [    1.690906] in sunxi_mmc_irq host->int_sum=260
> [    1.695412] SDXC_IntErrBit
> [    1.698208] enter the sunxi_mmc_finalize_request!!!!
> [    1.703214] here is error@@@@@@@@@@@@@@@,bbc2
> [    1.707641] sunxi-mci 1c0f000.mmc: req done, resp 00000000 00000000 
> 00000000 00000000
> [    1.715526] mmc0: req done (CMD52): -110: 00000000 00000000 00000000 
> 00000000
> [    1.722787] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    1.730026] mmc0: gated MCI clock
> [    1.733388] mmc0: starting CMD52 arg 80000c08 flags 00000195
> [    1.739124] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    1.746836] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    1.751957] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    1.813531] mmc0: ungated MCI clock
> [    1.816936] 111111 sunxi mmc request
> [    1.820596] SDXC_IntErrBit:bbc2
> [    1.823793] sunxi-mci 1c0f000.mmc: cmd 52(80000174) arg 80000c08 ie 
> 0x0000bbc6 len 0
> [    1.832413] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    1.837559] in sunxi_mmc_irq msk_int=260
> [    1.841551] sunxi-mci 1c0f000.mmc: irq: rq df8a7e50 mi 00000104 idi 
> 00000000
> [    1.848641] in sunxi_mmc_irq host->int_sum=0
> [    1.852987] in sunxi_mmc_irq host->int_sum=260
> [    1.857480] SDXC_IntErrBit
> [    1.860271] enter the sunxi_mmc_finalize_request!!!!
> [    1.865282] here is error@@@@@@@@@@@@@@@,bbc2
> [    1.869708] sunxi-mci 1c0f000.mmc: req done, resp 00000000 00000000 
> 00000000 00000000
> [    1.877593] mmc0: req done (CMD52): -110: 00000000 00000000 00000000 
> 00000000
> [    1.884842] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    1.892085] mmc0: gated MCI clock
> [    1.895475] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    1.903182] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    1.908279] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    1.969892] mmc0: ungated MCI clock
> [    1.973300] mmc0: clock 400000Hz busmode 2 powermode 2 cs 1 Vdd 21 width 0 
> timing 0
> [    1.981033] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    1.986129] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    2.047778] mmc0: clock 0Hz busmode 2 powermode 2 cs 1 Vdd 21 width 0 
> timing 0
> [    2.054931] mmc0: gated MCI clock
> [    2.059298] mmc0: starting CMD0 arg 00000000 flags 000000c0
> [    2.064827] mmc0: clock 400000Hz busmode 2 powermode 2 cs 1 Vdd 21 width 0 
> timing 0
> [    2.072508] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    2.077605] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    2.139219] mmc0: ungated MCI clock
> [    2.142642] 111111 sunxi mmc request
> [    2.146262] SDXC_IntErrBit:bbc2
> [    2.149478] sunxi-mci 1c0f000.mmc: cmd 0(80008000) arg 0 ie 0x0000bbc6 len > 0
> [    2.156977] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    2.162120] in sunxi_mmc_irq msk_int=4
> [    2.165933] sunxi-mci 1c0f000.mmc: irq: rq df8a7e78 mi 00000004 idi 
> 00000000
> [    2.173033] in sunxi_mmc_irq host->int_sum=0
> [    2.177366] in sunxi_mmc_irq host->int_sum=4
> [    2.181698] SDXC_IntDoneBit
> [    2.184579] enter the sunxi_mmc_finalize_request!!!!
> [    2.189593] sunxi-mci 1c0f000.mmc: req done, resp 00000000 00000000 
> 00000000 00000000
> [    2.197478] mmc0: req done (CMD0): 0: 00000000 00000000 00000000 00000000
> [    2.204383] mmc0: clock 0Hz busmode 2 powermode 2 cs 1 Vdd 21 width 0 
> timing 0
> [    2.211622] mmc0: gated MCI clock
> [    2.216013] mmc0: clock 400000Hz busmode 2 powermode 2 cs 1 Vdd 21 width 0 
> timing 0
> [    2.223600] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    2.228697] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    2.290308] mmc0: ungated MCI clock
> [    2.293716] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    2.301450] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    2.306545] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    2.368192] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    2.375342] mmc0: gated MCI clock
> [    2.379711] mmc0: starting CMD8 arg 000001aa flags 000002f5
> [    2.385228] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    2.392931] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    2.398028] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    2.459640] mmc0: ungated MCI clock
> [    2.463042] 111111 sunxi mmc request
> [    2.466682] SDXC_IntErrBit:bbc2
> [    2.469918] sunxi-mci 1c0f000.mmc: cmd 8(80000148) arg 1aa ie 0x0000bbc6 
> len 0
> [    2.477489] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    2.482631] in sunxi_mmc_irq msk_int=4
> [    2.486443] sunxi-mci 1c0f000.mmc: irq: rq df8a7e78 mi 00000004 idi 
> 00000000
> [    2.493543] in sunxi_mmc_irq host->int_sum=0
> [    2.497876] in sunxi_mmc_irq host->int_sum=4
> [    2.502208] SDXC_IntDoneBit
> [    2.505089] enter the sunxi_mmc_finalize_request!!!!
> [    2.510103] sunxi-mci 1c0f000.mmc: req done, resp 000001aa 00000000 
> 00000000 00000000
> [    2.517988] mmc0: req done (CMD8): 0: 000001aa 00000000 00000000 00000000
> [    2.524893] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    2.532132] mmc0: gated MCI clock
> [    2.535501] mmc0: starting CMD5 arg 00000000 flags 000002e1
> [    2.541180] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    2.548842] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    2.553986] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    2.615570] mmc0: ungated MCI clock
> [    2.618982] 111111 sunxi mmc request
> [    2.622631] SDXC_IntErrBit:bbc2
> [    2.625829] sunxi-mci 1c0f000.mmc: cmd 5(80000045) arg 0 ie 0x0000bbc6 len > 0
> [    2.633754] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    2.638900] in sunxi_mmc_irq msk_int=260
> [    2.642893] sunxi-mci 1c0f000.mmc: irq: rq df8a7e30 mi 00000104 idi 
> 00000000
> [    2.649982] in sunxi_mmc_irq host->int_sum=0
> [    2.654316] in sunxi_mmc_irq host->int_sum=260
> [    2.658821] SDXC_IntErrBit
> [    2.661630] enter the sunxi_mmc_finalize_request!!!!
> [    2.666623] here is error@@@@@@@@@@@@@@@,bbc2
> [    2.671050] sunxi-mci 1c0f000.mmc: req done, resp 00000000 00000000 
> 00000000 00000000
> [    2.678987] mmc0: req failed (CMD5): -110, retrying...
> [    2.684160] 111111 sunxi mmc request
> [    2.687770] SDXC_IntErrBit:bbc2
> [    2.691002] sunxi-mci 1c0f000.mmc: cmd 5(80000045) arg 0 ie 0x0000bbc6 len > 0
> [    2.698891] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    2.704044] in sunxi_mmc_irq msk_int=260
> [    2.708031] sunxi-mci 1c0f000.mmc: irq: rq df8a7e30 mi 00000104 idi 
> 00000000
> [    2.715120] in sunxi_mmc_irq host->int_sum=0
> [    2.719453] in sunxi_mmc_irq host->int_sum=260
> [    2.723959] SDXC_IntErrBit
> [    2.726749] enter the sunxi_mmc_finalize_request!!!!
> [    2.731760] here is error@@@@@@@@@@@@@@@,bbc2
> [    2.736186] sunxi-mci 1c0f000.mmc: req done, resp 00000000 00000000 
> 00000000 00000000
> [    2.744092] mmc0: req failed (CMD5): -110, retrying...
> [    2.749266] 111111 sunxi mmc request
> [    2.752926] SDXC_IntErrBit:bbc2
> [    2.756122] sunxi-mci 1c0f000.mmc: cmd 5(80000045) arg 0 ie 0x0000bbc6 len > 0
> [    2.764052] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    2.769197] in sunxi_mmc_irq msk_int=260
> [    2.773190] sunxi-mci 1c0f000.mmc: irq: rq df8a7e30 mi 00000104 idi 
> 00000000
> [    2.780280] in sunxi_mmc_irq host->int_sum=0
> [    2.784613] in sunxi_mmc_irq host->int_sum=260
> [    2.789119] SDXC_IntErrBit
> [    2.791909] enter the sunxi_mmc_finalize_request!!!!
> [    2.796927] here is error@@@@@@@@@@@@@@@,bbc2
> [    2.801346] sunxi-mci 1c0f000.mmc: req done, resp 00000000 00000000 
> 00000000 00000000
> [    2.809250] mmc0: req failed (CMD5): -110, retrying...
> [    2.814457] 111111 sunxi mmc request
> [    2.818067] SDXC_IntErrBit:bbc2
> [    2.821301] sunxi-mci 1c0f000.mmc: cmd 5(80000045) arg 0 ie 0x0000bbc6 len > 0
> [    2.829188] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    2.834333] in sunxi_mmc_irq msk_int=260
> [    2.838326] sunxi-mci 1c0f000.mmc: irq: rq df8a7e30 mi 00000104 idi 
> 00000000
> [    2.845416] in sunxi_mmc_irq host->int_sum=0
> [    2.849749] in sunxi_mmc_irq host->int_sum=260
> [    2.854255] SDXC_IntErrBit
> [    2.857045] enter the sunxi_mmc_finalize_request!!!!
> [    2.862056] here is error@@@@@@@@@@@@@@@,bbc2
> [    2.866483] sunxi-mci 1c0f000.mmc: req done, resp 00000000 00000000 
> 00000000 00000000
> [    2.874380] mmc0: req done (CMD5): -110: 00000000 00000000 00000000 
> 00000000
> [    2.881528] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    2.888759] mmc0: gated MCI clock
> [    2.892164] mmc0: starting CMD55 arg 00000000 flags 000000f5
> [    2.897876] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    2.905588] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    2.910704] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    2.972289] mmc0: ungated MCI clock
> [    2.975691] 111111 sunxi mmc request
> [    2.979339] SDXC_IntErrBit:bbc2
> [    2.982567] sunxi-mci 1c0f000.mmc: cmd 55(80000177) arg 0 ie 0x0000bbc6 
> len 0
> [    2.990071] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    2.995216] in sunxi_mmc_irq msk_int=4
> [    2.999025] sunxi-mci 1c0f000.mmc: irq: rq df8a7dc0 mi 00000004 idi 
> 00000000
> [    3.006126] in sunxi_mmc_irq host->int_sum=0
> [    3.010459] in sunxi_mmc_irq host->int_sum=4
> [    3.014791] SDXC_IntDoneBit
> [    3.017668] enter the sunxi_mmc_finalize_request!!!!
> [    3.022686] sunxi-mci 1c0f000.mmc: req done, resp 00400120 00000000 
> 00000000 00000000
> [    3.030571] mmc0: req done (CMD55): 0: 00400120 00000000 00000000 00000000
> [    3.037565] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    3.044802] mmc0: gated MCI clock
> [    3.048170] mmc0: starting CMD41 arg 00000000 flags 000000e1
> [    3.053926] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    3.061618] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    3.066714] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    3.128325] mmc0: ungated MCI clock
> [    3.131749] 111111 sunxi mmc request
> [    3.135377] SDXC_IntErrBit:bbc2
> [    3.138584] sunxi-mci 1c0f000.mmc: cmd 41(80000069) arg 0 ie 0x0000bbc6 
> len 0
> [    3.146106] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    3.151255] in sunxi_mmc_irq msk_int=4
> [    3.155064] sunxi-mci 1c0f000.mmc: irq: rq df8a7e40 mi 00000004 idi 
> 00000000
> [    3.162165] in sunxi_mmc_irq host->int_sum=0
> [    3.166498] in sunxi_mmc_irq host->int_sum=4
> [    3.170830] SDXC_IntDoneBit
> [    3.173706] enter the sunxi_mmc_finalize_request!!!!
> [    3.178725] sunxi-mci 1c0f000.mmc: req done, resp 00ff8000 00000000 
> 00000000 00000000
> [    3.186609] mmc0: req done (CMD41): 0: 00ff8000 00000000 00000000 00000000
> [    3.193601] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    3.200840] mmc0: gated MCI clock
> [    3.204233] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    3.211938] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    3.217034] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    3.278648] mmc0: ungated MCI clock
> [    3.282075] mmc0: clock 400000Hz busmode 2 powermode 2 cs 1 Vdd 21 width 0 
> timing 0
> [    3.289787] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    3.294885] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    3.356532] mmc0: clock 0Hz busmode 2 powermode 2 cs 1 Vdd 21 width 0 
> timing 0
> [    3.363682] mmc0: gated MCI clock
> [    3.368050] mmc0: starting CMD0 arg 00000000 flags 000000c0
> [    3.373590] mmc0: clock 400000Hz busmode 2 powermode 2 cs 1 Vdd 21 width 0 
> timing 0
> [    3.381268] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    3.386365] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    3.447976] mmc0: ungated MCI clock
> [    3.451396] 111111 sunxi mmc request
> [    3.455028] SDXC_IntErrBit:bbc2
> [    3.458233] sunxi-mci 1c0f000.mmc: cmd 0(80008000) arg 0 ie 0x0000bbc6 len > 0
> [    3.465732] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    3.470878] in sunxi_mmc_irq msk_int=4
> [    3.474687] sunxi-mci 1c0f000.mmc: irq: rq df8a7e00 mi 00000004 idi 
> 00000000
> [    3.481787] in sunxi_mmc_irq host->int_sum=0
> [    3.486120] in sunxi_mmc_irq host->int_sum=4
> [    3.490453] SDXC_IntDoneBit
> [    3.493328] enter the sunxi_mmc_finalize_request!!!!
> [    3.498348] sunxi-mci 1c0f000.mmc: req done, resp 00ff8000 00000000 
> 00000000 00000000
> [    3.506232] mmc0: req done (CMD0): 0: 00ff8000 00000000 00000000 00000000
> [    3.513139] mmc0: clock 0Hz busmode 2 powermode 2 cs 1 Vdd 21 width 0 
> timing 0
> [    3.520376] mmc0: gated MCI clock
> [    3.524765] mmc0: clock 400000Hz busmode 2 powermode 2 cs 1 Vdd 21 width 0 
> timing 0
> [    3.532351] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    3.537448] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    3.599059] mmc0: ungated MCI clock
> [    3.602485] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    3.610198] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    3.615296] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    3.676950] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    3.684105] mmc0: gated MCI clock
> [    3.688479] mmc0: starting CMD8 arg 000001aa flags 000002f5
> [    3.694011] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    3.701697] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    3.706795] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    3.768418] mmc0: ungated MCI clock
> [    3.771840] 111111 sunxi mmc request
> [    3.775461] SDXC_IntErrBit:bbc2
> [    3.778677] sunxi-mci 1c0f000.mmc: cmd 8(80000148) arg 1aa ie 0x0000bbc6 
> len 0
> [    3.786283] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    3.791430] in sunxi_mmc_irq msk_int=4
> [    3.795240] sunxi-mci 1c0f000.mmc: irq: rq df8a7e00 mi 00000004 idi 
> 00000000
> [    3.802340] in sunxi_mmc_irq host->int_sum=0
> [    3.806673] in sunxi_mmc_irq host->int_sum=4
> [    3.811005] SDXC_IntDoneBit
> [    3.813882] enter the sunxi_mmc_finalize_request!!!!
> [    3.818901] sunxi-mci 1c0f000.mmc: req done, resp 000001aa 00000000 
> 00000000 00000000
> [    3.826785] mmc0: req done (CMD8): 0: 000001aa 00000000 00000000 00000000
> [    3.833690] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    3.840929] mmc0: gated MCI clock
> [    3.844299] mmc0: starting CMD55 arg 00000000 flags 000000f5
> [    3.850053] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    3.857726] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    3.862871] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    3.924439] mmc0: ungated MCI clock
> [    3.927840] 111111 sunxi mmc request
> [    3.931508] SDXC_IntErrBit:bbc2
> [    3.934698] sunxi-mci 1c0f000.mmc: cmd 55(80000177) arg 0 ie 0x0000bbc6 
> len 0
> [    3.942216] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    3.947362] in sunxi_mmc_irq msk_int=4
> [    3.951171] sunxi-mci 1c0f000.mmc: irq: rq df8a7d60 mi 00000004 idi 
> 00000000
> [    3.958271] in sunxi_mmc_irq host->int_sum=0
> [    3.962604] in sunxi_mmc_irq host->int_sum=4
> [    3.966936] SDXC_IntDoneBit
> [    3.969813] enter the sunxi_mmc_finalize_request!!!!
> [    3.974831] sunxi-mci 1c0f000.mmc: req done, resp 00000120 00000000 
> 00000000 00000000
> [    3.982716] mmc0: req done (CMD55): 0: 00000120 00000000 00000000 00000000
> [    3.989711] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    3.996926] mmc0: gated MCI clock
> [    4.000334] mmc0: starting CMD41 arg 41200000 flags 000000e1
> [    4.006050] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    4.013764] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    4.018859] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    4.080470] mmc0: ungated MCI clock
> [    4.083874] 111111 sunxi mmc request
> [    4.087524] SDXC_IntErrBit:bbc2
> [    4.090758] sunxi-mci 1c0f000.mmc: cmd 41(80000069) arg 41200000 ie 
> 0x0000bbc6 len 0
> [    4.098841] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    4.103988] in sunxi_mmc_irq msk_int=4
> [    4.107813] sunxi-mci 1c0f000.mmc: irq: rq df8a7de0 mi 00000004 idi 
> 00000000
> [    4.114898] in sunxi_mmc_irq host->int_sum=0
> [    4.119231] in sunxi_mmc_irq host->int_sum=4
> [    4.123563] SDXC_IntDoneBit
> [    4.126441] enter the sunxi_mmc_finalize_request!!!!
> [    4.131458] sunxi-mci 1c0f000.mmc: req done, resp 00ff8000 00000000 
> 00000000 00000000
> [    4.139354] mmc0: req done (CMD41): 0: 00ff8000 00000000 00000000 00000000
> [    4.146346] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    4.153574] mmc0: gated MCI clock
> [    4.159670] mmc0: starting CMD55 arg 00000000 flags 000000f5
> [    4.165247] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    4.172977] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    4.178073] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    4.239686] mmc0: ungated MCI clock
> [    4.243098] 111111 sunxi mmc request
> [    4.246729] SDXC_IntErrBit:bbc2
> [    4.249966] sunxi-mci 1c0f000.mmc: cmd 55(80000177) arg 0 ie 0x0000bbc6 
> len 0
> [    4.257449] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    4.262595] in sunxi_mmc_irq msk_int=4
> [    4.266404] sunxi-mci 1c0f000.mmc: irq: rq df8a7d60 mi 00000004 idi 
> 00000000
> [    4.273504] in sunxi_mmc_irq host->int_sum=0
> [    4.277837] in sunxi_mmc_irq host->int_sum=4
> [    4.282170] SDXC_IntDoneBit
> [    4.285046] enter the sunxi_mmc_finalize_request!!!!
> [    4.290064] sunxi-mci 1c0f000.mmc: req done, resp 00000120 00000000 
> 00000000 00000000
> [    4.297950] mmc0: req done (CMD55): 0: 00000120 00000000 00000000 00000000
> [    4.304942] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    4.312180] mmc0: gated MCI clock
> [    4.315550] mmc0: starting CMD41 arg 41200000 flags 000000e1
> [    4.321304] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    4.328988] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    4.334113] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    4.395705] mmc0: ungated MCI clock
> [    4.399107] 111111 sunxi mmc request
> [    4.402766] SDXC_IntErrBit:bbc2
> [    4.405964] sunxi-mci 1c0f000.mmc: cmd 41(80000069) arg 41200000 ie 
> 0x0000bbc6 len 0
> [    4.414091] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    4.419237] in sunxi_mmc_irq msk_int=4
> [    4.423046] sunxi-mci 1c0f000.mmc: irq: rq df8a7de0 mi 00000004 idi 
> 00000000
> [    4.430146] in sunxi_mmc_irq host->int_sum=0
> [    4.434479] in sunxi_mmc_irq host->int_sum=4
> [    4.438821] SDXC_IntDoneBit
> [    4.441688] enter the sunxi_mmc_finalize_request!!!!
> [    4.446706] sunxi-mci 1c0f000.mmc: req done, resp c0ff8000 00000000 
> 00000000 00000000
> [    4.454592] mmc0: req done (CMD41): 0: c0ff8000 00000000 00000000 00000000
> [    4.461585] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    4.468801] mmc0: gated MCI clock
> [    4.472210] mmc0: starting CMD2 arg 00000000 flags 00000067
> [    4.477850] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    4.485564] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    4.490668] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    4.552241] mmc0: ungated MCI clock
> [    4.555643] 111111 sunxi mmc request
> [    4.559283] SDXC_IntErrBit:bbc2
> [    4.562517] sunxi-mci 1c0f000.mmc: cmd 2(800001c2) arg 0 ie 0x0000bbc6 len > 0
> [    4.570153] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    4.575299] in sunxi_mmc_irq msk_int=4
> [    4.579109] sunxi-mci 1c0f000.mmc: irq: rq df8a7e20 mi 00000004 idi 
> 00000000
> [    4.586208] in sunxi_mmc_irq host->int_sum=0
> [    4.590542] in sunxi_mmc_irq host->int_sum=4
> [    4.594874] SDXC_IntDoneBit
> [    4.597752] enter the sunxi_mmc_finalize_request!!!!
> [    4.602770] sunxi-mci 1c0f000.mmc: req done, resp 02544d53 41303847 
> 111dec2a ce00d59b
> [    4.610656] mmc0: req done (CMD2): 0: 02544d53 41303847 111dec2a ce00d59b
> [    4.617558] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    4.624797] mmc0: gated MCI clock
> [    4.628162] !!!!!!!!!!!!! get cid err=0
> [    4.632099] mmc0: starting CMD3 arg 00000000 flags 00000075
> [    4.637726] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    4.645428] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    4.650542] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    4.712116] mmc0: ungated MCI clock
> [    4.715519] 111111 sunxi mmc request
> [    4.719159] SDXC_IntErrBit:bbc2
> [    4.722394] sunxi-mci 1c0f000.mmc: cmd 3(80000143) arg 0 ie 0x0000bbc6 len > 0
> [    4.729793] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    4.734939] in sunxi_mmc_irq msk_int=4
> [    4.738748] sunxi-mci 1c0f000.mmc: irq: rq df8a7e20 mi 00000004 idi 
> 00000000
> [    4.745848] in sunxi_mmc_irq host->int_sum=0
> [    4.750181] in sunxi_mmc_irq host->int_sum=4
> [    4.754515] SDXC_IntDoneBit
> [    4.757390] enter the sunxi_mmc_finalize_request!!!!
> [    4.762408] sunxi-mci 1c0f000.mmc: req done, resp 12340500 00000000 
> 00000000 00000000
> [    4.770293] mmc0: req done (CMD3): 0: 12340500 00000000 00000000 00000000
> [    4.777199] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    4.784437] mmc0: gated MCI clock
> [    4.787803] !!!!!!!!!!!!! send relative addr, err=0
> [    4.792761] mmc0: starting CMD9 arg 12340000 flags 00000007
> [    4.798406] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    4.806106] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    4.811222] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    4.872795] mmc0: ungated MCI clock
> [    4.876197] 111111 sunxi mmc request
> [    4.879867] SDXC_IntErrBit:bbc2
> [    4.883054] sunxi-mci 1c0f000.mmc: cmd 9(800001c9) arg 12340000 ie 
> 0x0000bbc6 len 0
> [    4.891316] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    4.896465] in sunxi_mmc_irq msk_int=4
> [    4.900287] sunxi-mci 1c0f000.mmc: irq: rq df8a7e00 mi 00000004 idi 
> 00000000
> [    4.907371] in sunxi_mmc_irq host->int_sum=0
> [    4.911704] in sunxi_mmc_irq host->int_sum=4
> [    4.916036] SDXC_IntDoneBit
> [    4.918912] enter the sunxi_mmc_finalize_request!!!!
> [    4.923932] sunxi-mci 1c0f000.mmc: req done, resp 400e0032 5b590000 
> 3a477f80 0a40000b
> [    4.931828] mmc0: req done (CMD9): 0: 400e0032 5b590000 3a477f80 0a40000b
> [    4.938721] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    4.945961] mmc0: gated MCI clock
> [    4.949325] !!!!!!!!!!!!! sd get csd, err=0
> [    4.953607] mmc0: starting CMD7 arg 12340000 flags 00000015
> [    4.959227] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    4.966935] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    4.972050] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    5.033625] mmc0: ungated MCI clock
> [    5.037028] 111111 sunxi mmc request
> [    5.040686] SDXC_IntErrBit:bbc2
> [    5.043884] sunxi-mci 1c0f000.mmc: cmd 7(80000147) arg 12340000 ie 
> 0x0000bbc6 len 0
> [    5.051935] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    5.057087] in sunxi_mmc_irq msk_int=4
> [    5.060891] sunxi-mci 1c0f000.mmc: irq: rq df8a7e20 mi 00000004 idi 
> 00000000
> [    5.067991] in sunxi_mmc_irq host->int_sum=0
> [    5.072324] in sunxi_mmc_irq host->int_sum=4
> [    5.076656] SDXC_IntDoneBit
> [    5.079534] enter the sunxi_mmc_finalize_request!!!!
> [    5.084551] sunxi-mci 1c0f000.mmc: req done, resp 00000700 00000000 
> 00000000 00000000
> [    5.092436] mmc0: req done (CMD7): 0: 00000700 00000000 00000000 00000000
> [    5.099350] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    5.106583] mmc0: gated MCI clock
> [    5.109964] !!!!!!!!!!!!! select card, err=0
> [    5.114278] mmc0: starting CMD55 arg 12340000 flags 00000095
> [    5.120031] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    5.127710] sunxi-mci 1c0f000.mmc: ios->clock: 400000
> [    5.132846] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
> [    5.194421] mmc0: ungated MCI clock
> [    5.197823] 111111 sunxi mmc request
> [    5.201491] SDXC_IntErrBit:bbc2
> [    5.204681] sunxi-mci 1c0f000.mmc: cmd 55(80000177) arg 12340000 ie 
> 0x0000bbc6 len 0
> [    5.212809] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
> [    5.217956] in sunxi_mmc_irq msk_int=4
> [    5.221784] sunxi-mci 1c0f000.mmc: irq: rq df8a7d38 mi 00000004 idi 
> 00000000
> [    5.228866] in sunxi_mmc_irq host->int_sum=0
> [    5.233199] in sunxi_mmc_irq host->int_sum=4
> [    5.237532] SDXC_IntDoneBit
> [    5.240408] enter the sunxi_mmc_finalize_request!!!!
> [    5.245426] sunxi-mci 1c0f000.mmc: req done, resp 00000920 00000000 
> 00000000 00000000
> [    5.253322] mmc0: req done (CMD55): 0: 00000920 00000000 00000000 00000000
> [    5.260303] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
> [    5.267522] mmc0: gated MCI clock
> [    5.270933] ###################   dma address 0
>  
>  [    5.275587] mmc0: starting CMD51 arg 00000000 flags 000000b5
>  [    5.281584] mmc0:     blksz 8 blocks 1 flags 00000200 tsac 100 ms nsac 0
>  [    5.288351] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 
> 0 timing 0
>  [    5.296070] sunxi-mci 1c0f000.mmc: ios->clock: 400000
>  [    5.301172] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
>  [    5.362750] mmc0: ungated MCI clock
>  [    5.366153] 111111 sunxi mmc request
>  [    5.369813] SDXC_IntErrBit:bbc2
>  [    5.373001] data is not null !!!!!!!!!!!!  0 
>  [    5.377419] enter the sunxi_mmc_prepare_dma
>  [    5.381702] Addresssssssssssssss of ptr1 is 5e880500
>  [    5.386702] sunxi-mci 1c0f000.mmc: cmd 51(80002373) arg 0 ie 0x0000bbca 
> len 8
>  [    5.394799] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
>  [    5.399952] in sunxi_mmc_irq msk_int=2056
>  [    5.404024] sunxi-mci 1c0f000.mmc: irq: rq df8a7dcc mi 00000808 idi 
> 0000a000
>  [    5.411114] in sunxi_mmc_irq host->int_sum=0
>  [    5.415447] in sunxi_mmc_irq host->int_sum=2056
>  [    5.420040] SDXC_IntErrBit
>  [    5.422831] enter the sunxi_mmc_finalize_request!!!!
>  [    5.427841] here is error@@@@@@@@@@@@@@@,bbc2
>  [    5.432270] sunxi-mci 1c0f000.mmc: smc 0 err, cmd 51, RD FE !!
>  [    5.438153] mrq->data is not null
>  [    5.441533] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>  [    5.446473] before dma_umap_sg
>  [    5.449609] sunxi-mci 1c0f000.mmc: req done, resp 00000000 00000000 
> 00000000 00000000
>  [    5.457481] mrq->data->error:-110
>  [    5.460864] sunxi-mci 1c0f000.mmc: data error, sending stop command
>  [    5.467976] sunxi-mci 1c0f000.mmc: send stop command failed
>  [    5.473471] mmc0: req done (CMD51): -110: 00000000 00000000 00000000 
> 00000000
>  [    5.480652] mmc0:     0 bytes transferred: -110
>  [    5.485302] mmc0: clock 0Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
>  [    5.492547] mmc0: gated MCI clock
>  [    5.495911] !!!!!!!!!!!!! setup card, err=-110
>  [    5.500437] !!!!!!!!!!!!! Detect and init the card, err=-110
>  [    5.506132] mmc0: error -110 whilst initialising SD card
>  [    5.511553] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 
> 0 timing 0
>  [    5.519222] sunxi-mci 1c0f000.mmc: ios->clock: 400000
>  [    5.524358] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
>  [    5.585953] mmc0: ungated MCI clock
>  [    5.589370] mmc0: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 21 width 
> 0 timing 0
>  [    5.597093] sunxi-mci 1c0f000.mmc: ios->clock: 400000
>  [    5.602209] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
>  [    5.663797] mmc0: starting CMD1 arg 00000000 flags 000000e1
>  [    5.669300] 111111 sunxi mmc request
>  [    5.672941] SDXC_IntErrBit:bbc2
>  [    5.676135] sunxi-mci 1c0f000.mmc: cmd 1(80000041) arg 0 ie 0x0000bbc6 
> len 0
>  [    5.684060] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
>  [    5.689210] in sunxi_mmc_irq msk_int=260
>  [    5.693200] sunxi-mci 1c0f000.mmc: irq: rq df8a7e58 mi 00000104 idi 
> 00000000
>  [    5.700289] in sunxi_mmc_irq host->int_sum=0
>  [    5.704622] in sunxi_mmc_irq host->int_sum=260
>  [    5.709127] SDXC_IntErrBit
>  [    5.711935] enter the sunxi_mmc_finalize_request!!!!
>  [    5.716929] here is error@@@@@@@@@@@@@@@,bbc2
>  [    5.721357] sunxi-mci 1c0f000.mmc: smc 0 err, cmd 1, RTO !!
>  [    5.726999] sunxi-mci 1c0f000.mmc: req done, resp 00000000 00000000 
> 00000000 00000000
>  [    5.734899] mmc0: req done (CMD1): -110: 00000000 00000000 00000000 
> 00000000
>  [    5.742045] mmc0: clock 0Hz busmode 1 powermode 2 cs 0 Vdd 21 width 0 
> timing 0
>  [    5.749258] mmc0: gated MCI clock
>  [    5.752707] mmc0: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 21 width 
> 0 timing 0
>  [    5.760375] sunxi-mci 1c0f000.mmc: ios->clock: 400000
>  [    5.765472] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
>  [    5.827086] mmc0: ungated MCI clock
>  [    5.830513] mmc0: clock 0Hz busmode 1 powermode 0 cs 0 Vdd 0 width 0 
> timing 0
>  [    5.837686] sunxi-mci 1c0f000.mmc: power off!
>  [    5.843157] mmc0: frequency set to 0 in disable function, this means the 
> clock is already disabled.
>  [    6.839682] mmc0: mmc_rescan_try_freq: trying to init card at 400000 Hz
>  [    6.846229] mmc0: clock 0Hz busmode 2 powermode 1 cs 0 Vdd 21 width 0 
> timing 0
>  [    6.853512] Address of dma phy address is 5e838000 
>  [    6.858436] enter the sunxi_mmc_irq,SDXC_IntErrBit:bbc2
>  [    6.863725] in sunxi_mmc_irq msk_int=0
>  [    6.867532] sunxi-mci 1c0f000.mmc: irq: rq   (null) mi 00000000 idi 
> 00000000
>  [    6.874662] sunxi-mci 1c0f000.mmc: power on!
>  [    6.889677] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 
> 0 timing 0
>  [    6.897245] sunxi-mci 1c0f000.mmc: ios->clock: 400000
>  [    6.902383] sunxi-mci 1c0f000.mmc: clk already 400000, rounded 400000
>  [    6.979635] mmc0: starting CMD52 arg 00000c00 flags 00000195
>  [    6.985218] 111111 sunxi mmc request
>  [    6.988844] SDXC_IntErrBit:bbc2
>  [    6.992084] sunxi-mci 1c0f000.mmc: cmd 52(80000174) arg c00 ie 0x0000bbc6 
> len 0
>  [   13.829677] clk: Not disabling unused clocks
>  [   13.837673] Freeing unused kernel memory: 2668K (c0837000 - c0ad2000)
>  cat: can't open '/proc/cmdline': No such file or directory
>  /bin/ash: can't access tty; job control turned off
>  / # 
>  
> 
> 



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