irq flood with mmc boot partitions on s3c2416 with 3.0rc1

[Kyungmin Park]

Hi,

Interesting, I also use the latest kernel and boot well.
As I don't have the s3c2416 user manaul, I'm not sure it's support
AUTO CMD12 or not. but at least it's support at s3c6410 and later.

[    1.355000] sdhci: Secure Digital Host Controller Interface driver
[    1.360000] sdhci: Copyright(c) Pierre Ossman
[    1.365000] s3c-sdhci s3c-sdhci.0: clock source 2: sclk_mmc (50000000 Hz)
[    1.375000] mmc0: SDHCI controller on samsung-hsmmc [s3c-sdhci.0] using ADMA
[    1.380000] s3c-sdhci s3c-sdhci.2: clock source 2: sclk_mmc (50000000 Hz)
[    1.385000] mmc1: no vmmc regulator found
[    1.390000] mmc1: SDHCI controller on samsung-hsmmc [s3c-sdhci.2] using ADMA
[    1.400000] s3c-sdhci s3c-sdhci.3: clock source 2: sclk_mmc (50000000 Hz)
[    1.405000] mmc2: no vmmc regulator found
[    1.410000] mmc2: SDHCI controller on samsung-hsmmc [s3c-sdhci.3] using ADMA
...
[    1.435000] Waiting for root device /dev/mmcblk0p3...
[    1.650000] mmc0: new high speed MMC card at address 0001
[    1.655000] mmcblk0: mmc0:0001 SEM08G 7.39 GiB
[    1.660000] mmcblk0boot0: mmc0:0001 SEM08G partition 1 1.00 MiB
[    1.665000] mmcblk0boot1: mmc0:0001 SEM08G partition 2 1.00 MiB
[    1.675000]  mmcblk0: p1 p2 p3 p4 < p5 p6 >
[    1.680000]  mmcblk0boot1: unknown partition table
[    1.685000]  mmcblk0boot0: unknown partition table

I also check the external SD card.

Thank you,
Kyungmin Park


On Fri, Jun 3, 2011 at 4:49 AM, Heiko Stübner <heiko at sntech.de> wrote:
> Hi,
>
> after upgrading my development kernel from 2.6.38 to 3.0rc1 I get flooded (i.e.
> it never stops) by messages of the form:
>
> mmc1: Got data interrupt 0x00100000 even though no data operation was in
> progress.
>  sdhci: =========== REGISTER DUMP (mmc1)===========
>  sdhci: Sys addr: 0x37b1b000 | Version:  0x00000401
>  sdhci: Blk size: 0x00007200 | Blk cnt:  0x00000000
>  sdhci: Argument: 0x00010000 | Trn mode: 0x00000033
>  sdhci: Present:  0x01e70002 | Host ctl: 0x00000012
>  sdhci: Power:    0x0000000a | Blk gap:  0x00000000
>  sdhci: Wake-up:  0x00000000 | Clock:    0x0000020f
>  sdhci: Timeout:  0x0000000e | Int stat: 0x00108000
>  sdhci: Int enab: 0x02ff000b | Sig enab: 0x02ff000b
>  sdhci: AC12 err: 0x00000000 | Slot int: 0x00000001
>  sdhci: Caps:     0x05e80080 | Caps_1:   0x00000000
>  sdhci: Cmd:      0x00000d1a | Max curr: 0x00000000
>  sdhci: Host ctl2: 0x00000000
>  sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x37846808
>  sdhci: ===========================================
>
>
> hardware: S3C2416 based board, mmc0 is an external micro-SD and mmc1 is a
>  mmc1: new high speed MMC card at address 0001
>  mmcblk1: mmc1:0001 HYNIX  1.88 GiB
>  mmcblk1boot0: mmc1:0001 HYNIX  partition 1 256 KiB
>  mmcblk1boot1: mmc1:0001 HYNIX  partition 2 256 KiB
>   mmcblk1: p1 p2 p3
>   mmcblk1boot1: unknown partition table
>   mmcblk1boot0: unknown partition table
>
> it uses therefore the sdhci-s3c driver.
>
>
> I did some prodding in the code and found the following peculiarities:
>
> - When I remove Kyungmins AUTO_CMD12-quirk in sdhci-s3c it seems I get one
> functional boot and have only the following messages in the kernel log
>
>  mmcblk1boot0: retrying using single block read
>  mmc1: ADMA error
>  mmcblk1boot0: error -5 transferring data, sector 448, nr 32, card status
> 0x900
>  end_request: I/O error, dev mmcblk1boot0, sector 448
>  Buffer I/O error on device mmcblk1boot0, logical block 56
>  mmcblk1boot1: retrying using single block read
>  mmc1: ADMA error
>  mmcblk1boot1: error -5 transferring data, sector 448, nr 32, card status
> 0x900
>  end_request: I/O error, dev mmcblk1boot1, sector 448
>
> But after a soft reset the irq message flood seems to return.
>
> - When I completely remove the boot partition registration in
> mmc_blk_alloc_parts() in card/block.c it seems that everything return to
> normal, i.e. no strange messages at all
>
>
> I'm not sure if this is a problem of only my board or if it happens on more
> hardware.
>
>
> Heiko
>
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