Date:	Fri, 12 Dec 2014 13:00:51 +0100
From:	Yegor Yefremov <yegorslists@...glemail.com>
To:	Felipe Balbi <balbi@...com>
Cc:	netdev <netdev@...r.kernel.org>,
	"N, Mugunthan V" <mugunthanvnm@...com>
Subject: Re: am335x: cpsw: interrupt failure

On Wed, Dec 10, 2014 at 11:56 PM, Yegor Yefremov
<yegorslists@...glemail.com> wrote:
> On Wed, Dec 10, 2014 at 10:02 PM, Felipe Balbi <balbi@...com> wrote:
>> Hi,
>>
>> On Wed, Dec 10, 2014 at 09:58:23PM +0100, Yegor Yefremov wrote:
>>
>> [snip]
>>
>>> >> git revert failed as the driver has more changes meanwhile or I'm
>>> >> missing some params. I've tried to force the driver to use legacy
>>> >> routines, but then I don't get pass U-Boot's "Starting kernel ..." See
>>> >> attached patch.
>>> >>
>>> >> Compiler used:
>>> >>
>>> >> Linux version 3.18.0-rc7 (...) (gcc version 4.8.3 20140320
>>> >> (prerelease) (Sourcery CodeBench Lite 2014.05-29) ) #309 SMP Fri Dec 5
>>> >> 10:59:38 CET 2014
>>> >>
>>> >> Btw, what am335x based hardware do you have? I can run tests on both
>>> >> BBB and am335x-evmsk.
>>> >
>>> > coming back to this. I have BBB only. Can you provide some extra
>>> > information on how I can trigger this problem here ?
>>>
>>> I have basically two am335x based boards, where I can trigger this
>>
>> too bad, I have a single am335x board available here and that's my BBB.
>>
>> Do both boards stall or only the server or only the client ?
>>
>> If only one of them fail, then I try connecting my BBB to my AM437x SK
>> and see if that'll die too.
>
> I have following setup: all three devices (am335x-evmsk inclusively)
> are connected to my development host via Gigabit switch. And on all of
> them I run "nuttcp -S" and my dev host is client (nuttcp -t). Just
> normal setup, when you try to measure am335x network performance. So
> am335x devices communicate only with my host and not with each other.
>
> If I use 3.18 I can only observe, that the system freezes, but when I
> use the kernel with above mentioned commit I see interrupt errors,
> like I described in my first e-mail.
>
>>> problem via nuttcp (I think iperf would do the job too). The first
>>> system stalls almost immediately, the second one was working for about
>>> 7 minutes. I have tried the same kernel on am335x-evmsk - and this
>>> system didn't stall. I could provide dts files for both systems.
>>>
>>> I've tried to reduce my dts as much as I could to match  am335x-evmsk
>>> dts, I have even removed entries for the PMIC, but still the system
>>> stalls. Btw PMIC's INT line is connected to a GPIO pin on processor.
>>>
>>> I've used omap2plus_defconfig for all 3 devices. Any other info I can
>>> supply?
>>
>> just the extra bit of info above.

I've got BBB stalled. I could do it from two different hosts: one
Windows 7 64-bit machine with Xubuntu VM and one older native Linux
server. Command used on both PC's (not simultaneously):

nuttcp -t -N 4 -T30m 192.168.1.235

BBB stalled after some minutes.

Kernel defconfig:

CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
CONFIG_FHANDLE=y
CONFIG_AUDIT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=16
CONFIG_CGROUPS=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CPUSETS=y
CONFIG_CGROUP_CPUACCT=y
CONFIG_RESOURCE_COUNTERS=y
CONFIG_MEMCG=y
CONFIG_MEMCG_SWAP=y
CONFIG_MEMCG_KMEM=y
CONFIG_CGROUP_PERF=y
CONFIG_CGROUP_SCHED=y
CONFIG_CFS_BANDWIDTH=y
CONFIG_RT_GROUP_SCHED=y
CONFIG_BLK_CGROUP=y
CONFIG_NAMESPACES=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_EXPERT=y
CONFIG_SLAB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_KPROBES=y
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
CONFIG_MODULE_UNLOAD=y
CONFIG_MODULE_FORCE_UNLOAD=y
CONFIG_MODVERSIONS=y
CONFIG_MODULE_SRCVERSION_ALL=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_PARTITION_ADVANCED=y
CONFIG_ARCH_MULTI_V6=y
CONFIG_POWER_AVS_OMAP=y
CONFIG_POWER_AVS_OMAP_CLASS3=y
CONFIG_OMAP_RESET_CLOCKS=y
CONFIG_OMAP_MUX_DEBUG=y
CONFIG_ARCH_OMAP2=y
CONFIG_ARCH_OMAP3=y
CONFIG_ARCH_OMAP4=y
CONFIG_SOC_OMAP5=y
CONFIG_SOC_AM33XX=y
CONFIG_SOC_AM43XX=y
CONFIG_SOC_DRA7XX=y
CONFIG_ARM_THUMBEE=y
CONFIG_ARM_ERRATA_411920=y
CONFIG_ARM_ERRATA_430973=y
CONFIG_SMP=y
CONFIG_NR_CPUS=2
CONFIG_CMA=y
CONFIG_SECCOMP=y
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_ARM_APPENDED_DTB=y
CONFIG_ARM_ATAG_DTB_COMPAT=y
CONFIG_CMDLINE="root=/dev/mmcblk0p2 rootwait console=ttyO2,115200"
CONFIG_KEXEC=y
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_STAT_DETAILS=y
CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
# CONFIG_ARM_OMAP2PLUS_CPUFREQ is not set
CONFIG_CPU_IDLE=y
CONFIG_BINFMT_MISC=y
CONFIG_PM_DEBUG=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_XFRM_USER=y
CONFIG_NET_KEY=y
CONFIG_NET_KEY_MIGRATE=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
# CONFIG_INET_LRO is not set
CONFIG_NETFILTER=y
CONFIG_CAN=m
CONFIG_CAN_C_CAN=m
CONFIG_CAN_C_CAN_PLATFORM=m
CONFIG_BT=m
CONFIG_BT_HCIUART=m
CONFIG_BT_HCIUART_H4=y
CONFIG_BT_HCIUART_BCSP=y
CONFIG_BT_HCIUART_LL=y
CONFIG_BT_HCIBCM203X=m
CONFIG_BT_HCIBPA10X=m
CONFIG_CFG80211=m
CONFIG_MAC80211=m
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_DMA_CMA=y
CONFIG_OMAP_OCP2SCP=y
CONFIG_CONNECTOR=y
CONFIG_MTD=y
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_OOPS=y
CONFIG_MTD_CFI=y
CONFIG_MTD_CFI_INTELEXT=y
CONFIG_MTD_NAND=y
CONFIG_MTD_NAND_ECC_BCH=y
CONFIG_MTD_NAND_OMAP2=y
CONFIG_MTD_ONENAND=y
CONFIG_MTD_ONENAND_VERIFY_WRITE=y
CONFIG_MTD_ONENAND_OMAP2=y
CONFIG_MTD_UBI=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=16384
CONFIG_SENSORS_TSL2550=m
CONFIG_BMP085_I2C=m
CONFIG_SRAM=y
CONFIG_SENSORS_LIS3_I2C=m
CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y
CONFIG_SCSI_SCAN_ASYNC=y
CONFIG_MD=y
CONFIG_NETDEVICES=y
CONFIG_KS8851=y
CONFIG_KS8851_MLL=y
CONFIG_SMC91X=y
CONFIG_SMSC911X=y
CONFIG_TI_CPSW=y
CONFIG_AT803X_PHY=y
CONFIG_SMSC_PHY=y
CONFIG_USB_USBNET=y
CONFIG_USB_NET_SMSC95XX=y
CONFIG_USB_ALI_M5632=y
CONFIG_USB_AN2720=y
CONFIG_USB_EPSON2888=y
CONFIG_USB_KC2190=y
CONFIG_LIBERTAS=m
CONFIG_LIBERTAS_USB=m
CONFIG_LIBERTAS_SDIO=m
CONFIG_LIBERTAS_DEBUG=y
CONFIG_WL_TI=y
CONFIG_WL12XX=m
CONFIG_WL18XX=m
CONFIG_WLCORE_SPI=m
CONFIG_WLCORE_SDIO=m
CONFIG_MWIFIEX=m
CONFIG_MWIFIEX_SDIO=m
CONFIG_MWIFIEX_USB=m
CONFIG_INPUT_JOYDEV=y
CONFIG_INPUT_EVDEV=y
CONFIG_KEYBOARD_GPIO=y
CONFIG_KEYBOARD_MATRIX=m
CONFIG_KEYBOARD_TWL4030=y
CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_TOUCHSCREEN_ADS7846=m
CONFIG_TOUCHSCREEN_TSC2005=m
CONFIG_TOUCHSCREEN_TSC2007=m
CONFIG_INPUT_MISC=y
CONFIG_INPUT_TWL4030_PWRBUTTON=y
# CONFIG_LEGACY_PTYS is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=32
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_MANY_PORTS=y
CONFIG_SERIAL_8250_SHARE_IRQ=y
CONFIG_SERIAL_8250_DETECT_IRQ=y
CONFIG_SERIAL_8250_RSA=y
CONFIG_SERIAL_OF_PLATFORM=y
CONFIG_SERIAL_OMAP=y
CONFIG_SERIAL_OMAP_CONSOLE=y
CONFIG_HW_RANDOM=y
CONFIG_I2C_CHARDEV=y
CONFIG_SPI=y
CONFIG_SPI_OMAP24XX=y
CONFIG_PINCTRL_SINGLE=y
CONFIG_DEBUG_GPIO=y
CONFIG_GPIO_SYSFS=y
CONFIG_GPIO_TWL4030=y
CONFIG_W1=y
CONFIG_BATTERY_BQ27x00=m
CONFIG_CHARGER_ISP1704=m
CONFIG_CHARGER_TWL4030=m
CONFIG_CHARGER_BQ2415X=m
CONFIG_CHARGER_BQ24190=m
CONFIG_CHARGER_BQ24735=m
CONFIG_POWER_RESET=y
CONFIG_POWER_AVS=y
CONFIG_SENSORS_LM75=m
CONFIG_THERMAL=y
CONFIG_THERMAL_GOV_FAIR_SHARE=y
CONFIG_THERMAL_GOV_USER_SPACE=y
CONFIG_CPU_THERMAL=y
CONFIG_TI_SOC_THERMAL=y
CONFIG_TI_THERMAL=y
CONFIG_OMAP4_THERMAL=y
CONFIG_OMAP5_THERMAL=y
CONFIG_DRA752_THERMAL=y
CONFIG_WATCHDOG=y
CONFIG_OMAP_WATCHDOG=y
CONFIG_TWL4030_WATCHDOG=y
CONFIG_MFD_PALMAS=y
CONFIG_MFD_TPS65217=y
CONFIG_MFD_TPS65218=y
CONFIG_MFD_TPS65910=y
CONFIG_TWL6040_CORE=y
CONFIG_REGULATOR_PALMAS=y
CONFIG_REGULATOR_PBIAS=y
CONFIG_REGULATOR_TI_ABB=y
CONFIG_REGULATOR_TPS65023=y
CONFIG_REGULATOR_TPS6507X=y
CONFIG_REGULATOR_TPS65217=y
CONFIG_REGULATOR_TPS65218=y
CONFIG_REGULATOR_TPS65910=y
CONFIG_REGULATOR_TWL4030=y
CONFIG_FB=y
CONFIG_FIRMWARE_EDID=y
CONFIG_FB_MODE_HELPERS=y
CONFIG_FB_TILEBLITTING=y
CONFIG_OMAP2_DSS=m
CONFIG_OMAP5_DSS_HDMI=y
CONFIG_OMAP2_DSS_SDI=y
CONFIG_OMAP2_DSS_DSI=y
CONFIG_FB_OMAP2=m
CONFIG_DISPLAY_ENCODER_TFP410=m
CONFIG_DISPLAY_ENCODER_TPD12S015=m
CONFIG_DISPLAY_CONNECTOR_DVI=m
CONFIG_DISPLAY_CONNECTOR_HDMI=m
CONFIG_DISPLAY_CONNECTOR_ANALOG_TV=m
CONFIG_DISPLAY_PANEL_DPI=m
CONFIG_DISPLAY_PANEL_DSI_CM=m
CONFIG_DISPLAY_PANEL_SONY_ACX565AKM=m
CONFIG_DISPLAY_PANEL_LGPHILIPS_LB035Q02=m
CONFIG_DISPLAY_PANEL_SHARP_LS037V7DW01=m
CONFIG_DISPLAY_PANEL_TPO_TD028TTEC1=m
CONFIG_DISPLAY_PANEL_TPO_TD043MTEA1=m
CONFIG_DISPLAY_PANEL_NEC_NL8048HL11=m
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_LCD_CLASS_DEVICE=y
CONFIG_LCD_PLATFORM=y
CONFIG_BACKLIGHT_CLASS_DEVICE=y
CONFIG_BACKLIGHT_GENERIC=m
CONFIG_BACKLIGHT_PWM=m
CONFIG_BACKLIGHT_PANDORA=m
CONFIG_BACKLIGHT_GPIO=m
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
CONFIG_LOGO=y
CONFIG_SOUND=m
CONFIG_SND=m
CONFIG_SND_MIXER_OSS=m
CONFIG_SND_PCM_OSS=m
CONFIG_SND_VERBOSE_PRINTK=y
CONFIG_SND_DEBUG=y
CONFIG_SND_USB_AUDIO=m
CONFIG_SND_SOC=m
CONFIG_SND_OMAP_SOC=m
CONFIG_SND_OMAP_SOC_OMAP_TWL4030=m
CONFIG_SND_OMAP_SOC_OMAP_ABE_TWL6040=m
CONFIG_SND_OMAP_SOC_OMAP3_PANDORA=m
CONFIG_USB=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
CONFIG_USB_MON=y
CONFIG_USB_ACM=y
CONFIG_USB_WDM=y
CONFIG_USB_STORAGE=y
CONFIG_USB_MUSB_HDRC=y
CONFIG_USB_MUSB_DSPS=y
CONFIG_USB_TI_CPPI41_DMA=y
CONFIG_USB_DWC3=m
CONFIG_USB_SERIAL=y
CONFIG_USB_SERIAL_FTDI_SIO=y
CONFIG_USB_TEST=y
CONFIG_AM335X_PHY_USB=y
CONFIG_USB_GADGET=y
CONFIG_USB_GADGET_DEBUG=y
CONFIG_USB_GADGET_DEBUG_FILES=y
CONFIG_USB_GADGET_DEBUG_FS=y
CONFIG_USB_ZERO=m
CONFIG_MMC=y
CONFIG_SDIO_UART=y
CONFIG_MMC_OMAP=y
CONFIG_MMC_OMAP_HS=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_TIMER=y
CONFIG_LEDS_TRIGGER_ONESHOT=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_BACKLIGHT=y
CONFIG_LEDS_TRIGGER_CPU=y
CONFIG_LEDS_TRIGGER_GPIO=y
CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_TWL92330=y
CONFIG_RTC_DRV_TWL4030=y
CONFIG_RTC_DRV_OMAP=y
CONFIG_DMADEVICES=y
CONFIG_TI_EDMA=y
CONFIG_DMA_OMAP=y
CONFIG_EXTCON=y
CONFIG_EXTCON_PALMAS=y
CONFIG_PWM=y
CONFIG_PWM_TWL=y
CONFIG_PWM_TWL_LED=y
CONFIG_OMAP_USB2=y
CONFIG_TI_PIPE3=y
CONFIG_EXT2_FS=y
CONFIG_EXT3_FS=y
# CONFIG_EXT3_FS_XATTR is not set
CONFIG_EXT4_FS=y
CONFIG_FANOTIFY=y
CONFIG_QUOTA=y
CONFIG_QFMT_V2=y
CONFIG_AUTOFS4_FS=m
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_JFFS2_FS=y
CONFIG_JFFS2_SUMMARY=y
CONFIG_JFFS2_FS_XATTR=y
CONFIG_JFFS2_COMPRESSION_OPTIONS=y
CONFIG_JFFS2_LZO=y
CONFIG_JFFS2_RUBIN=y
CONFIG_UBIFS_FS=y
CONFIG_CRAMFS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3_ACL=y
CONFIG_NFS_V4=y
CONFIG_ROOT_NFS=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
CONFIG_PRINTK_TIME=y
CONFIG_DEBUG_INFO=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_SCHEDSTATS=y
CONFIG_TIMER_STATS=y
CONFIG_PROVE_LOCKING=y
# CONFIG_DEBUG_BUGVERBOSE is not set
CONFIG_SECURITY=y
CONFIG_CRYPTO_MICHAEL_MIC=y
# CONFIG_CRYPTO_ANSI_CPRNG is not set
CONFIG_CRC_CCITT=y
CONFIG_CRC_T10DIF=y
CONFIG_CRC_ITU_T=y
CONFIG_CRC7=y
CONFIG_LIBCRC32C=y
CONFIG_FONTS=y
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y

Buildroot defconfig:

BR2_arm=y
BR2_cortex_a8=y
BR2_JLEVEL=24
BR2_CCACHE=y
BR2_TOOLCHAIN_EXTERNAL=y
BR2_TARGET_GENERIC_GETTY_PORT="ttyO0"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_DEFCONFIG="omap2plus"
BR2_LINUX_KERNEL_ZIMAGE=y
BR2_LINUX_KERNEL_DTS_SUPPORT=y
BR2_LINUX_KERNEL_INTREE_DTS_NAME="am335x-evmsk am335x-boneblack"
BR2_LINUX_KERNEL_INSTALL_TARGET=y
BR2_PACKAGE_NUTTCP=y
BR2_PACKAGE_OPENSSH=y
BR2_PACKAGE_SER2NET=y
BR2_TARGET_ROOTFS_TAR_BZIP2=y
BR2_TARGET_UBOOT=y
BR2_TARGET_UBOOT_BOARDNAME="am335x_evm"
BR2_TARGET_UBOOT_FORMAT_IMG=y
BR2_TARGET_UBOOT_SPL=y
BR2_TARGET_UBOOT_SPL_NAME="MLO"

U-Boot version: 2014.07
Kernel config is omap2plus with enabled USB

# cat /proc/version
Linux version 3.18.0 (user@...r-VirtualBox) (gcc version 4.8.3
20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-29) ) #6 SMP
Mon Dec 8 22:47:43 CET 2014
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