Subject: Re: [PATCH v5 0/3] ARM: shmobile: lager: enable Ether

From: Simon Horman <[email-masked]>
Date: Fri, 26 Jul 2013 09:55:07 +0900

On Thu, Jul 25, 2013 at 12:09:58PM +0200, Laurent Pinchart wrote:
> Hi Simon
> 
> Thank you for the patches.
> 
> On Wednesday 24 July 2013 17:56:06 Simon Horman wrote:
> > this short series enables the on-board ethernet
> > of the r8a7790 SoC for on lager board.
> > 
> > It has a run-time dependency on
> > "sh_eth: add support for r8a7790 SoC"
> > 
> > It has been built on top of renesas-next-20130724v2.
> > 
> > Simon Horman (3):
> >   ARM: shmobile: r8a7790: clocks for Ether support
> >   ARM: shmobile: lager: enable Ether
> >   ARM: shmobile: lager: enable nfsroot in DTS
> > 
> >  arch/arm/boot/dts/r8a7790-lager.dts    |  2 +-
> >  arch/arm/mach-shmobile/board-lager.c   | 30 ++++++++++++++++++++++++++++++
> >  arch/arm/mach-shmobile/clock-r8a7790.c |  4 ++++
> >  3 files changed, 35 insertions(+), 1 deletion(-)
> 
> With this series and "[PATCH 0/2 v4 net-next repost] sh_eth: Add support for
> r8a7790 SoC" applied on top of renesas-devel-20130725, booting the Lager
> board usually (about 90% of the time) results in receive FIFO overflows and
> disabling of the sh-eth IRQ:

Thanks.

Unfortunately I am having trouble with using NFS root at all
in my test environment. I'll work with Magnus to resolve this issue.

Sergei do you have any idea what might be causing this?

> [    0.000000] Booting Linux on physical CPU 0x0
> [    0.000000] Linux version 3.11.0-rc2-ag5+ (laurent@avalon) (gcc version 4.7.3 20130205 (prerelease) (crosstool-NG linaro-1.13.1-4.7-2013.02-01-20130221 - Linaro GCC 2013.02) ) #678 SMP Thu Jul 25 12:3
> [    0.000000] CPU: ARMv7 Processor [413fc0f2] revision 2 (ARMv7), cr=10c5387d
> [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction cache
> [    0.000000] Machine: lager, model: Lager
> [    0.000000] cma: CMA: reserved 16 MiB at 6e800000
> [    0.000000] Memory policy: ECC disabled, Data cache writealloc
> [    0.000000] PERCPU: Embedded 7 pages/cpu @c14fa000 s8192 r8192 d12288 u32768
> [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 522768
> [    0.000000] Kernel command line: console=ttySC6,115200 root=/dev/nfs ip=dhcp nfsroot=,rsize=4096,wsize=4096 rw
> [    0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)
> [    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
> [    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
> [    0.000000] Memory: 2058432K/2097152K available (3139K kernel code, 376K rwdata, 1092K rodata, 200K init, 191K bss, 38720K reserved, 1318912K highmem)
> [    0.000000] Virtual kernel memory layout:
> [    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
> [    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
> [    0.000000]     vmalloc : 0xf0000000 - 0xff000000   ( 240 MB)
> [    0.000000]     lowmem  : 0xc0000000 - 0xef800000   ( 760 MB)
> [    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
> [    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
> [    0.000000]       .text : 0xc0008000 - 0xc042af1c   (4236 kB)
> [    0.000000]       .init : 0xc042b000 - 0xc045d000   ( 200 kB)
> [    0.000000]       .data : 0xc045e000 - 0xc04bc1e0   ( 377 kB)
> [    0.000000]        .bss : 0xc04bc1e0 - 0xc04ec0d8   ( 192 kB)
> [    0.000000] Hierarchical RCU implementation.
> [    0.000000]  RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=1.
> [    0.000000] NR_IRQS:16 nr_irqs:16 16
> [    0.000000] Architected local timer running at 10.00MHz (virt).
> [    0.000000] Switching to timer-based delay loop
> [    0.000000] sched_clock: ARM arch timer >56 bits at 10000kHz, resolution 100ns
> [    0.000000] sched_clock: 32 bits at 1kHz, resolution 976562ns, wraps every 4194303999ms
> [    0.000000] Console: colour dummy device 80x30
> [    0.000270] Calibrating delay loop (skipped), value calculated using timer frequency.. 20.41 BogoMIPS (lpj=9765)
> [    0.000281] pid_max: default: 32768 minimum: 301
> [    0.000385] Mount-cache hash table entries: 512
> [    0.000935] CPU: Testing write buffer coherency: ok
> [    0.001150] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
> [    0.001171] Setting up static identity map for 0xc03174e0 - 0xc0317538
> [    0.001606] Brought up 1 CPUs
> [    0.001614] SMP: Total of 1 processors activated (20.41 BogoMIPS).
> [    0.001620] CPU: All CPU(s) started in SVC mode.
> [    0.011784] pinctrl core: initialized pinctrl subsystem
> [    0.012316] regulator-dummy: no parameters
> [    0.012814] NET: Registered protocol family 16
> [    0.013869] DMA: preallocated 256 KiB pool for atomic coherent allocations
> [    0.016792] sh-pfc pfc-r8a7790: r8a77900_pfc support registered
> [    0.019223] renesas_irqc renesas_irqc.0: driving 4 irqs
> [    0.020277] No ATAGs?
> [    0.030319] bio: create slab <bio-0> at 0
> [    0.031065] fixed-3.3V: 3300 mV 
> [    0.032184] usbcore: registered new interface driver usbfs
> [    0.032300] usbcore: registered new interface driver hub
> [    0.032436] usbcore: registered new device driver usb
> [    0.032822] media: Linux media interface: v0.10
> [    0.032927] Linux video capture interface: v2.00
> [    0.033465] sh_cmt sh_cmt.0: used for clock events
> [    0.034553] Switched to clocksource arch_sys_counter
> [    0.045044] NET: Registered protocol family 2
> [    0.045431] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
> [    0.045535] TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
> [    0.045637] TCP: Hash tables configured (established 8192 bind 8192)
> [    0.045675] TCP: reno registered
> [    0.045685] UDP hash table entries: 512 (order: 2, 16384 bytes)
> [    0.045709] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
> [    0.045853] NET: Registered protocol family 1
> [    0.046040] RPC: Registered named UNIX socket transport module.
> [    0.046047] RPC: Registered udp transport module.
> [    0.046052] RPC: Registered tcp transport module.
> [    0.046058] RPC: Registered tcp NFSv4.1 backchannel transport module.
> [    0.047801] bounce pool size: 64 pages
> [    0.048179] msgmni has been set to 1476
> [    0.048406] io scheduler noop registered (default)
> [    0.048640] gpio_rcar gpio_rcar.0: driving 32 GPIOs
> [    0.048850] gpio_rcar gpio_rcar.1: driving 32 GPIOs
> [    0.049059] gpio_rcar gpio_rcar.2: driving 32 GPIOs
> [    0.049320] gpio_rcar gpio_rcar.3: driving 32 GPIOs
> [    0.049543] gpio_rcar gpio_rcar.4: driving 32 GPIOs
> [    0.049746] gpio_rcar gpio_rcar.5: driving 32 GPIOs
> [    0.050568] SuperH (H)SCI(F) driver initialized
> [    0.050670] sh-sci.0: ttySC0 at MMIO 0xe6c40000 (irq = 176) is a scifa
> [    0.050940] sh-sci.1: ttySC1 at MMIO 0xe6c50000 (irq = 177) is a scifa
> [    0.051219] sh-sci.2: ttySC2 at MMIO 0xe6c20000 (irq = 180) is a scifb
> [    0.051486] sh-sci.3: ttySC3 at MMIO 0xe6c30000 (irq = 181) is a scifb
> [    0.051748] sh-sci.4: ttySC4 at MMIO 0xe6ce0000 (irq = 182) is a scifb
> [    0.052000] sh-sci.5: ttySC5 at MMIO 0xe6c60000 (irq = 183) is a scifa
> [    0.052480] sh-sci.6: ttySC6 at MMIO 0xe6e60000 (irq = 184) is a scif
> [    0.562695] console [ttySC6] enabled
> [    0.566727] sh-sci.7: ttySC7 at MMIO 0xe6e68000 (irq = 185) is a scif
> [    0.573653] sh-sci.8: ttySC8 at MMIO 0xe62c0000 (irq = 186) is a hscif
> [    0.580596] sh-sci sh-sci.9: Attempting to register port 10 when only 9 are available.
> [    0.588686] sh-sci sh-sci.9: Consider bumping CONFIG_SERIAL_SH_SCI_NR_UARTS!
> [    0.595897] sh-sci: probe of sh-sci.9 failed with error -22
> [    0.601828] [drm] Initialized drm 1.1.0 20060810
> [    0.624313] libphy: sh_mii: probed
> [    0.627795] Base address at 0xee700000, 2e:09:0a:00:3d:aa, IRQ 194.
> [    0.634411] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
> [    0.641098] ehci-platform: EHCI generic platform driver
> [    0.646611] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
> [    0.652929] ohci-platform: OHCI generic platform driver
> [    0.661136] rcar_thermal rcar_thermal: 1 sensor probed
> [    0.666557] cpuidle: using governor ladder
> [    0.670759] cpuidle: using governor menu
> [    0.675980] usbcore: registered new interface driver usbhid
> [    0.681689] usbhid: USB HID core driver
> [    0.685698] TCP: cubic registered
> [    0.689090] NET: Registered protocol family 17
> [    0.693670] VFP support v0.3: implementor 41 architecture 4 part 30 variant f rev 0
> [    0.701519] Registering SWP/SWPB emulation handler
> [    0.707617] input: gpio-keys as /devices/platform/gpio-keys/input/input0
> [    0.718635] net eth0: attached phy 1 to driver Generic PHY
> [    0.735734] Sending DHCP requests .
> [    2.725075] libphy: r8a7790-ether-ff:01 - Link is Up - 100/Full
> ., OK
> [    3.429541] IP-Config: Got DHCP answer from 192.168.1.47, my address is 192.168.1.254
> [    3.437647] IP-Config: Complete:
> [    3.440956]      device=eth0, hwaddr=2e:09:0a:00:3d:aa, ipaddr=192.168.1.254, mask=255.255.255.0, gw=255.255.255.255
> [    3.451707]      host=192.168.1.254, domain=, nis-domain=(none)
> [    3.457759]      bootserver=192.168.1.47, rootserver=192.168.1.47, rootpath=/home/laurent/src/iob/netboot/renesas
> [    3.468062]      nameserver0=192.168.1.47
> [    3.477641] VFS: Mounted root (nfs filesystem) on device 0:10.
> [    3.483731] Freeing unused kernel memory: 200K (c042b000 - c045d000)
> INIT: version 2.86 booting
> Please wait: booting...
> Starting udev
> [    8.201044] udevd (365): /proc/365/oom_adj is deprecated, please use /proc/365/oom_score_adj instead.
> [    8.635199] sh_mmcif sh_mmcif.1: driver version 2010-04-28
> [    8.885323] mmc0: BKOPS_EN bit is not set
> [    8.945013] net eth0: Receive FIFO Overflow
> [    9.028893] net eth0: Receive FIFO Overflow
> [    9.112777] net eth0: Receive FIFO Overflow
> [    9.321193] irq 194: nobody cared (try booting with the "irqpoll" option)
> [    9.328121] CPU: 0 PID: 6 Comm: kworker/u2:0 Not tainted 3.11.0-rc2-ag5+ #678
> [    9.335411] Workqueue: kmmcd mmc_rescan
> [    9.339330] Backtrace: 
> [    9.341850] [<c0012474>] (dump_backtrace+0x0/0x10c) from [<c0012758>] (show_stack+0x18/0x1c)
> [    9.350458]  r6:000000c2 r5:00000000 r4:00000000 r3:ee05c000
> [    9.356275] [<c0012740>] (show_stack+0x0/0x1c) from [<c0312710>] (dump_stack+0x88/0xbc)
> [    9.364446] [<c0312688>] (dump_stack+0x0/0xbc) from [<c0077e90>] (__report_bad_irq+0x28/0xc8)
> [    9.373142]  r4:ee00fb40 r3:ee05c000
> [    9.376809] [<c0077e68>] (__report_bad_irq+0x0/0xc8) from [<c00783ec>] (note_interrupt+0x1e8/0x244)
> [    9.386036]  r6:000000c2 r5:00000000 r4:ee00fb40 r3:0001863c
> [    9.391846] [<c0078204>] (note_interrupt+0x0/0x244) from [<c0075fdc>] (handle_irq_event_percpu+0xb0/0x19c)
> [    9.401698] [<c0075f2c>] (handle_irq_event_percpu+0x0/0x19c) from [<c007612c>] (handle_irq_event+0x64/0x84)
> [    9.411638] [<c00760c8>] (handle_irq_event+0x0/0x84) from [<c00791b0>] (handle_fasteoi_irq+0x84/0x168)
> [    9.421131]  r6:ee05dd58 r5:000000c2 r4:ee00fb40 r3:00000000
> [    9.426941] [<c007912c>] (handle_fasteoi_irq+0x0/0x168) from [<c007591c>] (generic_handle_irq+0x28/0x38)
> [    9.436611]  r4:000000c2 r3:c007912c
> [    9.440276] [<c00758f4>] (generic_handle_irq+0x0/0x38) from [<c000fe38>] (handle_IRQ+0x40/0x9c)
> [    9.449149]  r4:c045bd14 r3:000007d4
> [    9.452813] [<c000fdf8>] (handle_IRQ+0x0/0x9c) from [<c000939c>] (gic_handle_irq+0x30/0x64)
> [    9.461332]  r6:ee05dc68 r5:c046680c r4:f000200c r3:000001a0
> [    9.467141] [<c000936c>] (gic_handle_irq+0x0/0x64) from [<c0013300>] (__irq_svc+0x40/0x50)
> [    9.475572] Exception stack(0xee05dc68 to 0xee05dcb0)
> [    9.480725] dc60:                   00000003 00000000 c04cec80 00000000 00000002 0000001b
> [    9.489069] dc80: 00000000 ee05c000 c0460080 60000113 00000006 ee05dcfc ee05dcb0 ee05dcb0
> [    9.497411] dca0: c002ccac c002cd28 80000113 ffffffff
> [    9.502562]  r7:ee05dc9c r6:ffffffff r5:80000113 r4:c002cd28
> [    9.508374] [<c002cc94>] (__do_softirq+0x0/0x1e0) from [<c002d1c8>] (irq_exit+0x9c/0xd4)
> [    9.516630] [<c002d12c>] (irq_exit+0x0/0xd4) from [<c000fe3c>] (handle_IRQ+0x44/0x9c)
> [    9.524617]  r4:c045bd14 r3:000007d4
> [    9.528281] [<c000fdf8>] (handle_IRQ+0x0/0x9c) from [<c000939c>] (gic_handle_irq+0x30/0x64)
> [    9.536799]  r6:ee05dd58 r5:c046680c r4:f000200c r3:000001a0
> [    9.542608] [<c000936c>] (gic_handle_irq+0x0/0x64) from [<c0013300>] (__irq_svc+0x40/0x50)
> [    9.551039] Exception stack(0xee05dd58 to 0xee05dda0)
> [    9.556190] dd40:                                                       c04bdec0 60000193
> [    9.564534] dd60: c048e300 ee05c000 c04bdec0 00000001 0000001d ee05c000 60000113 60000113
> [    9.572877] dd80: 00000006 ee05de04 ee05dd50 ee05dda0 c0026ca0 c00273ec 60000113 ffffffff
> [    9.581218]  r7:ee05dd8c r6:ffffffff r5:60000113 r4:c00273ec
> [    9.587034] [<c00271b4>] (vprintk_emit+0x0/0x4e4) from [<c0311304>] (printk+0x3c/0x44)
> [    9.595114] [<c03112c8>] (printk+0x0/0x44) from [<c024ff64>] (mmc_init_card+0x14e8/0x155c)
> [    9.603544]  r3:ee28fc00 r2:000007dc r1:edac54c0 r0:c03fa4d4
> [    9.609355] [<c024ea7c>] (mmc_init_card+0x0/0x155c) from [<c02501b4>] (mmc_attach_mmc+0xb4/0x1c8)
> [    9.618409] [<c0250100>] (mmc_attach_mmc+0x0/0x1c8) from [<c024ca94>] (mmc_rescan+0x280/0x2e4)
> [    9.627193]  r5:c0358e60 r4:ee28fe78
> [    9.630862] [<c024c814>] (mmc_rescan+0x0/0x2e4) from [<c003f110>] (process_one_work+0x124/0x374)
> [    9.639824]  r8:ee037c00 r7:ee05c000 r6:ee023200 r5:ee28fe78 r4:ee034e40 r3:c024c814
> [    9.647868] [<c003efec>] (process_one_work+0x0/0x374) from [<c003f824>] (worker_thread+0x138/0x3a8)
> [    9.657103] [<c003f6ec>] (worker_thread+0x0/0x3a8) from [<c0045944>] (kthread+0xac/0xb8)
> [    9.665360] [<c0045898>] (kthread+0x0/0xb8) from [<c000f5f8>] (ret_from_fork+0x14/0x3c)
> [    9.673523]  r7:00000000 r6:00000000 r5:c0045898 r4:ee04bd18
> [    9.679329] handlers:
> [    9.681647] [<c01eb77c>] sh_eth_interrupt
> [    9.685743] Disabling IRQ #194
> [    9.694575] mmc0: new high speed MMC card at address 0001
> [    9.702216] mmcblk0: mmc0:0001 MMC08G 7.32 GiB 
> [    9.707244] mmcblk0boot0: mmc0:0001 MMC08G partition 1 2.00 MiB
> [    9.713407] mmcblk0boot1: mmc0:0001 MMC08G partition 2 2.00 MiB
> [    9.722119]  mmcblk0: unknown partition table
> [    9.729391]  mmcblk0boot1: unknown partition table
> [    9.737484]  mmcblk0boot0: unknown partition table
> 
> -- 
> Regards,
> 
> Laurent Pinchart
>