gpmi-nfc gpmi-nfc.0: [read_page] DMA error

[michelleweng]

Hi, there

Recently I met a weird problem that every time I finish burning kernel and then reboot, sometimes I can see some DMA errors in flash, and kernel panic. But some times everything is OK. I am wondering if there are some patches for gpmi-nfc. Appreciate it if someone can help. Thanks.

LLLLLLLFLCLLJUncompressing Linux... done, booting the kernel.

Linux version 2.6.35.3-670-g914558e (michelle@michelle) (gcc version 4.4.4 (4.4.4_09.06.2010) ) #17 PREEMPT Thu Jun 12 18:37:59 PDT 2014

CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177

CPU: VIVT data cache, VIVT instruction cache

Machine: Freescale MX28EVK board

Memory policy: ECC disabled, Data cache writeback

Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512

Kernel command line: noinitrd console=ttyAM0,115200 ubi.mtd=1 root=ubi0:rootfs0 rootfstype=ubifs rw gpmi

PID hash table entries: 512 (order: -1, 2048 bytes)

Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)

Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)

Memory: 128MB = 128MB total

Memory: 120104k/120104k available, 10968k reserved, 0K highmem

Virtual kernel memory layout:

    vector  : 0xffff0000 - 0xffff1000   (   4 kB)

    fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)

    DMA     : 0xfde00000 - 0xffe00000   (  32 MB)

    vmalloc : 0xc8800000 - 0xf0000000   ( 632 MB)

    lowmem  : 0xc0000000 - 0xc8000000   ( 128 MB)

    modules : 0xbf000000 - 0xc0000000   (  16 MB)

      .init : 0xc0008000 - 0xc0028000   ( 128 kB)

      .text : 0xc0028000 - 0xc0345000   (3188 kB)

      .data : 0xc0346000 - 0xc036e9c0   ( 163 kB)

SLUB: Genslabs=11, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1

Hierarchical RCU implementation.

        RCU-based detection of stalled CPUs is disabled.

        Verbose stalled-CPUs detection is disabled.

NR_IRQS:288

Console: colour dummy device 80x30

console [ttyAM0] enabled

Calibrating delay loop... 226.09 BogoMIPS (lpj=1130496)

pid_max: default: 32768 minimum: 301

Security Framework initialized

Mount-cache hash table entries: 512

CPU: Testing write buffer coherency: ok

regulator: core version 0.5

NET: Registered protocol family 16

regulator: vddd: 800 <--> 1575 mV at 1500 mV fast normal

regulator: vdddbo: 800 <--> 1575 mV fast normal

regulator: vdda: 1500 <--> 2275 mV at 1800 mV fast normal

vddio = 3380000, val=10

regulator: vddio: 2880 <--> 3680 mV at 3380 mV fast normal

regulator: overall_current: fast normal

regulator: vbus5v:

regulator: mxs-duart-1: fast normal

regulator: mxs-bl-1: fast normal

regulator: mxs-i2c-1: fast normal

regulator: mmc_ssp-1: fast normal

regulator: mmc_ssp-2: fast normal

regulator: charger-1: fast normal

regulator: power-test-1: fast normal

regulator: cpufreq-1: fast normal

i.MX IRAM pool: 124 KB@0xc8820000

Reset switch chip ksz8895

Initializing GPMI pins

no mx28_init_battery

audit: cannot initialize inotify handle

bio: create slab <bio-0> at 0

Switching to clocksource mxs clock source

NET: Registered protocol family 2

IP route cache hash table entries: 1024 (order: 0, 4096 bytes)

TCP established hash table entries: 4096 (order: 3, 32768 bytes)

TCP bind hash table entries: 4096 (order: 2, 16384 bytes)

TCP: Hash tables configured (established 4096 bind 4096)

TCP reno registered

UDP hash table entries: 256 (order: 0, 4096 bytes)

UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)

NET: Registered protocol family 1

Unpacking initramfs...

Initramfs unpacking failed: junk in compressed archive

Freeing initrd memory: 6144K

Bus freq driver module loaded

mxs_cpu_init: cpufreq init finished

audit: initializing netlink socket (disabled)

type=2000 audit(0.510:1): initialized

msgmni has been set to 246

alg: No test for stdrng (krng)

cryptodev: driver loaded.

Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)

io scheduler noop registered

io scheduler deadline registered

io scheduler cfq registered (default)

mxs-duart.0: ttyAM0 at MMIO 0x80074000 (irq = 47) is a DebugUART

mxs-auart.0: ttySP0 at MMIO 0x8006a000 (irq = 112) is a mxs-auart.0

Found APPUART 3.1.0

mxs-auart.1: ttySP1 at MMIO 0x8006c000 (irq = 113) is a mxs-auart.1

Found APPUART 3.1.0

mxs-auart.2: ttySP2 at MMIO 0x8006e000 (irq = 114) is a mxs-auart.2

Found APPUART 3.1.0

mxs-auart.3: ttySP3 at MMIO 0x80070000 (irq = 115) is a mxs-auart.3

Found APPUART 3.1.0

mxs-auart.4: ttySP4 at MMIO 0x80072000 (irq = 116) is a mxs-auart.4

Found APPUART 3.1.0

i.MX GPMI NFC

NFC: Version 1, 8-chip GPMI and BCH

Boot ROM: Version 1, Single-chip boot area, block mark swapping supported

Scanning for NAND Flash chips...

NAND device: Manufacturer ID: 0xec, Chip ID: 0xf1 (Samsung NAND 128MiB 3,3V 8-bit)

-----------------------------

NAND Flash Device Information

-----------------------------

Manufacturer      : Samsung (0xec)

Device Code       : 0xf1

Cell Technology   : SLC

Chip Size         : 128 MiB

Pages per Block   : 64

Page Geometry     : 2048+64

ECC Strength      : 4 bits

ECC Size          : 512 B

Data Setup Time   : 15 ns

Data Hold Time    : 12 ns

Address Setup Time: 20 ns

GPMI Sample Delay : 6 ns

tREA              : Unknown

tRLOH             : Unknown

tRHOH             : Unknown

Description       : K9F1F08

-----------------

Physical Geometry

-----------------

Chip Count             : 1

Page Data Size in Bytes: 2048 (0x800)

Page OOB Size in Bytes : 64

Block Size in Bytes    : 131072 (0x20000)

Block Size in Pages    : 64 (0x40)

Chip Size in Bytes     : 134217728 (0x8000000)

Chip Size in Pages     : 65536 (0x10000)

Chip Size in Blocks    : 1024 (0x400)

Medium Size in Bytes   : 134217728 (0x8000000)

------------

NFC Geometry

------------

ECC Algorithm          : BCH

ECC Strength           : 8

Page Size in Bytes     : 2112

Metadata Size in Bytes : 10

ECC Chunk Size in Bytes: 512

ECC Chunk Count        : 4

Payload Size in Bytes  : 2048

Auxiliary Size in Bytes: 16

Auxiliary Status Offset: 12

Block Mark Byte Offset : 1999

Block Mark Bit Offset  : 0

-----------------

Boot ROM Geometry

-----------------

Boot Area Count            : 1

Boot Area Size in Bytes    : 10485760 (0xa00000)

Stride Size in Pages       : 64

Search Area Stride Exponent: 2

Scanning device for bad blocks

Boot area protection is enabled.

Creating 3 MTD partitions on "gpmi-nfc-main":

0x000000000000-0x000000a00000 : "gpmi-nfc-0-boot"

0x000000a00000-0x000003200000 : "gpmi-nfc-general-use"

0x000003200000-0x000008000000 : "gpmi-application-use"

UBI: attaching mtd1 to ubi0

UBI: physical eraseblock size:   131072 bytes (128 KiB)

UBI: logical eraseblock size:    126976 bytes

UBI: smallest flash I/O unit:    2048

UBI: VID header offset:          2048 (aligned 2048)

UBI: data offset:                4096

gpmi-nfc gpmi-nfc.0: [gpmi_nfc_dma_go] Chip: 0, DMA Channel: 4, Error -110

gpmi-nfc gpmi-nfc.0: [read_page] DMA error

[michelleweng]

For burning kernel I use the following commands:

flash_eraseall /dev/mtd0

kobs-ng init imx28_ivt_linux.sb

Sometimes it works well, but sometimes kernel panic and I have to power cycle the board and I can see the kernel is update.

[michelleweng]

It's IMX287, linux kernel 2.6.35. I changed two flags in \drivers\mtd\nand\gpmi-nfc\gpmi-nfc-hal-v1.c. And I have tried reboot for many times, it seems like that the DMA time out problem is fixed. Need more time to observe it.

line50:

mxs_reset_block(resources->gpmi_regs + HW_GPMI_CTRL0, true);

line111:

mxs_reset_block(resources->bch_regs, true);