Hi Florian,
I have observed what appears to be a regression in the ravb ethernet driver
caused by d5c3d84657db ("net: phy: Avoid polling PHY with
PHY_IGNORE_INTERRUPTS").
When booting net-next configured with the ARM64 defconfig on the Renesas
r8a7795/salvator-x I see the following and the ravb is unable to access the
network. With the above mentioned patch reverted I am able to boot to
user-space using nfsroot.
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.5.0-rc2+ (horms@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx) (gcc version 4.8.5 (Linaro GCC 4.8-2015.06) ) #90 SMP PREEMPT Tue Feb 16 12:22:08 JST 2016
[ 0.000000] Boot CPU: AArch64 Processor [411fd073]
[ 0.000000] debug: ignoring loglevel setting.
[ 0.000000] efi: Getting EFI parameters from FDT:
[ 0.000000] efi: UEFI not found.
[ 0.000000] cma: Reserved 16 MiB at 0x000000007f000000
[ 0.000000] On node 0 totalpages: 229376
[ 0.000000] DMA zone: 3584 pages used for memmap
[ 0.000000] DMA zone: 0 pages reserved
[ 0.000000] DMA zone: 229376 pages, LIFO batch:31
[ 0.000000] psci: probing for conduit method from DT.
[ 0.000000] psci: PSCIv1.0 detected in firmware.
[ 0.000000] psci: Using standard PSCI v0.2 function IDs
[ 0.000000] psci: Trusted OS migration not required
[ 0.000000] PERCPU: Embedded 20 pages/cpu @ffffffc036f8f000 s42496 r8192 d31232 u81920
[ 0.000000] pcpu-alloc: s42496 r8192 d31232 u81920 alloc=20*4096
[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
[ 0.000000] Detected PIPT I-cache on CPU0
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 225792
[ 0.000000] Kernel command line: ignore_loglevel rw root=/dev/nfs ip=dhcp nfsroot=10.3.3.135:/srv/nfs/salvator-x-arm64
[ 0.000000] log_buf_len individual max cpu contribution: 4096 bytes
[ 0.000000] log_buf_len total cpu_extra contributions: 12288 bytes
[ 0.000000] log_buf_len min size: 16384 bytes
[ 0.000000] log_buf_len: 32768 bytes
[ 0.000000] early log buf free: 14796(90%)
[ 0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
[ 0.000000] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
[ 0.000000] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
[ 0.000000] software IO TLB [mem 0x79c00000-0x7dc00000] (64MB) mapped at [ffffffc031c00000-ffffffc035bfffff]
[ 0.000000] Memory: 805744K/917504K available (6468K kernel code, 593K rwdata, 2900K rodata, 724K init, 242K bss, 95376K reserved, 16384K cma-reserved)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vmalloc : 0xffffff8000000000 - 0xffffffbdbfff0000 ( 246 GB)
[ 0.000000] vmemmap : 0xffffffbdc0000000 - 0xffffffbfc0000000 ( 8 GB maximum)
[ 0.000000] 0xffffffbdc1200000 - 0xffffffbdc2000000 ( 14 MB actual)
[ 0.000000] fixed : 0xffffffbffa7fd000 - 0xffffffbffac00000 ( 4108 KB)
[ 0.000000] PCI I/O : 0xffffffbffae00000 - 0xffffffbffbe00000 ( 16 MB)
[ 0.000000] modules : 0xffffffbffc000000 - 0xffffffc000000000 ( 64 MB)
[ 0.000000] memory : 0xffffffc000000000 - 0xffffffc038000000 ( 896 MB)
[ 0.000000] .init : 0xffffffc0009a9000 - 0xffffffc000a5e000 ( 724 KB)
[ 0.000000] .text : 0xffffffc000080000 - 0xffffffc0009a8244 ( 9377 KB)
[ 0.000000] .data : 0xffffffc000a5e000 - 0xffffffc000af2600 ( 594 KB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] Build-time adjustment of leaf fanout to 64.
[ 0.000000] RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=4.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=64, nr_cpu_ids=4
[ 0.000000] NR_IRQS:64 nr_irqs:64 0
[ 0.000000] Architected cp15 timer(s) running at 16.66MHz (virt).
[ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x3d7a162dd, max_idle_ns: 440795202225 ns
[ 0.000001] sched_clock: 56 bits at 16MHz, resolution 60ns, wraps every 2199023255551ns
[ 0.000055] Console: colour dummy device 80x25
[ 0.000217] console [tty0] enabled
[ 0.000229] Calibrating delay loop (skipped), value calculated using timer frequency.. 33.32 BogoMIPS (lpj=66640)
[ 0.000238] pid_max: default: 32768 minimum: 301
[ 0.000263] Security Framework initialized
[ 0.000278] Mount-cache hash table entries: 2048 (order: 2, 16384 bytes)
[ 0.000283] Mountpoint-cache hash table entries: 2048 (order: 2, 16384 bytes)
[ 0.000678] ASID allocator initialised with 65536 entries
[ 0.020145] EFI services will not be available.
[ 0.036098] Detected PIPT I-cache on CPU1
[ 0.036121] CPU1: Booted secondary processor [411fd073]
[ 0.048089] Detected PIPT I-cache on CPU2
[ 0.048097] CPU2: Booted secondary processor [411fd073]
[ 0.060095] Detected PIPT I-cache on CPU3
[ 0.060104] CPU3: Booted secondary processor [411fd073]
[ 0.060121] Brought up 4 CPUs
[ 0.060146] SMP: Total of 4 processors activated.
[ 0.060152] CPU: All CPU(s) started at EL1
[ 0.060409] devtmpfs: initialized
[ 0.061400] DMI not present or invalid.
[ 0.061486] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[ 0.061670] pinctrl core: initialized pinctrl subsystem
[ 0.062109] NET: Registered protocol family 16
[ 0.072043] cpuidle: using governor menu
[ 0.072107] vdso: 2 pages (1 code @ ffffffc000a65000, 1 data @ ffffffc000a64000)
[ 0.072128] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers.
[ 0.072442] DMA: preallocated 256 KiB pool for atomic allocations
[ 0.072531] Serial: AMBA PL011 UART driver
[ 0.073660] sh-pfc e6060000.pfc: r8a77950_pfc support registered
[ 0.088316] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[ 0.088974] vgaarb: loaded
[ 0.089063] SCSI subsystem initialized
[ 0.089121] libata version 3.00 loaded.
[ 0.089222] usbcore: registered new interface driver usbfs
[ 0.089244] usbcore: registered new interface driver hub
[ 0.089266] usbcore: registered new device driver usb
[ 0.089308] pps_core: LinuxPPS API ver. 1 registered
[ 0.089312] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@xxxxxxxx>
[ 0.089325] PTP clock support registered
[ 0.089376] dmi: Firmware registration failed.
[ 0.089732] Advanced Linux Sound Architecture Driver Initialized.
[ 0.090006] clocksource: Switched to clocksource arch_sys_counter
[ 0.090062] VFS: Disk quotas dquot_6.6.0
[ 0.090084] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[ 0.092799] NET: Registered protocol family 2
[ 0.092981] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
[ 0.093001] TCP bind hash table entries: 8192 (order: 5, 131072 bytes)
[ 0.093048] TCP: Hash tables configured (established 8192 bind 8192)
[ 0.093097] UDP hash table entries: 512 (order: 2, 16384 bytes)
[ 0.093105] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[ 0.093171] NET: Registered protocol family 1
[ 0.093287] RPC: Registered named UNIX socket transport module.
[ 0.093292] RPC: Registered udp transport module.
[ 0.093296] RPC: Registered tcp transport module.
[ 0.093300] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.093310] PCI: CLS 0 bytes, default 128
[ 0.093516] hw perfevents: enabled with armv8_pmuv3 PMU driver, 7 counters available
[ 0.093577] kvm [1]: HYP mode not available
[ 0.094396] futex hash table entries: 1024 (order: 5, 131072 bytes)
[ 0.094458] audit: initializing netlink subsys (disabled)
[ 0.094483] audit: type=2000 audit(0.088:1): initialized
[ 0.097585] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.097876] NFS: Registering the id_resolver key type
[ 0.097899] Key type id_resolver registered
[ 0.097903] Key type id_legacy registered
[ 0.097990] fuse init (API version 7.24)
[ 0.098207] 9p: Installing v9fs 9p2000 file system support
[ 0.098925] io scheduler noop registered
[ 0.098996] io scheduler cfq registered (default)
[ 0.099465] gpio_rcar e6050000.gpio: driving 16 GPIOs
[ 0.099567] gpio_rcar e6051000.gpio: driving 28 GPIOs
[ 0.099629] gpio_rcar e6052000.gpio: driving 15 GPIOs
[ 0.099686] gpio_rcar e6053000.gpio: driving 16 GPIOs
[ 0.099747] gpio_rcar e6054000.gpio: driving 18 GPIOs
[ 0.099818] gpio_rcar e6055000.gpio: driving 26 GPIOs
[ 0.099896] gpio_rcar e6055400.gpio: driving 32 GPIOs
[ 0.099943] gpio_rcar e6055800.gpio: driving 4 GPIOs
[ 0.102240] xenfs: not registering filesystem on non-xen platform
[ 0.103259] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
[ 0.103771] SuperH (H)SCI(F) driver initialized
[ 0.103894] e6e68000.serial: ttySC1 at MMIO 0xe6e68000 (irq = 77, base_baud = 0) is a scif
[ 0.104112] e6e88000.serial: ttySC0 at MMIO 0xe6e88000 (irq = 78, base_baud = 0) is a scif
[ 0.482589] console [ttySC0] enabled
[ 0.484631] msm_serial: driver initialized
[ 0.486847] Unable to detect cache hierarchy from DT for CPU 0
[ 0.491419] loop: module loaded
[ 0.493560] scsi host0: sata_rcar
[ 0.495317] ata1: SATA max UDMA/133 irq 80
[ 0.497576] tun: Universal TUN/TAP device driver, 1.6
[ 0.500101] tun: (C) 1999-2004 Max Krasnyansky <maxk@xxxxxxxxxxxx>
[ 0.503319] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
[ 0.506230] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[ 0.509198] igb: Intel(R) Gigabit Ethernet Network Driver - version 5.3.0-k
[ 0.512688] igb: Copyright (c) 2007-2014 Intel Corporation.
[ 0.515484] igbvf: Intel(R) Gigabit Virtual Function Network Driver - version 2.0.2-k
[ 0.519387] igbvf: Copyright (c) 2009 - 2012 Intel Corporation.
[ 0.522354] sky2: driver version 1.30
[ 0.524472] libphy: ravb_mii: probed
[ 0.526745] ravb e6800000.ethernet eth0: Base address at 0xe6800000, 2e:09:0a:00:83:92, IRQ 74.
[ 0.531260] VFIO - User Level meta-driver version: 0.3
[ 0.534057] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 0.537310] ehci-pci: EHCI PCI platform driver
[ 0.539550] ehci-platform: EHCI generic platform driver
[ 0.542184] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 0.545269] ohci-pci: OHCI PCI platform driver
[ 0.547507] ohci-platform: OHCI generic platform driver
[ 0.550157] usbcore: registered new interface driver usb-storage
[ 0.553260] mousedev: PS/2 mouse device common for all mice
[ 0.556529] i2c-rcar e6510000.i2c: probed
[ 0.558697] sdhci: Secure Digital Host Controller Interface driver
[ 0.561774] sdhci: Copyright(c) Pierre Ossman
[ 0.563965] Synopsys Designware Multimedia Card Interface Driver
[ 0.567020] sdhci-pltfm: SDHCI platform and OF driver helper
[ 0.569913] ledtrig-cpu: registered to indicate activity on CPUs
[ 0.573146] usbcore: registered new interface driver usbhid
[ 0.575926] usbhid: USB HID core driver
[ 0.580375] cs2000-cp 2-004f: revision - C1
[ 0.582756] ak4613-codec 2-0010: No cache used with register defaults set!
[ 0.588226] rcar_sound ec500000.sound: probed
[ 0.590702] NET: Registered protocol family 17
[ 0.592959] 9pnet: Installing 9P2000 support
[ 0.595129] Key type dns_resolver registered
[ 0.597492] registered taskstats version 1
[ 0.600031] asoc-simple-card sound: ak4613-hifi <-> ec500000.sound mapping ok
[ 0.606510] hctosys: unable to open rtc device (rtc0)
[ 0.676475] ravb e6800000.ethernet eth0: limited PHY to 100Mbit/s
[ 0.679528] Micrel KSZ9031 Gigabit PHY e6800000.etherne:00: attached PHY driver [Micrel KSZ9031 Gigabit PHY] (mii_bus:phy_addr=e6800000.etherne:00, irq=136)
[ 0.902003] ata1: link resume succeeded after 1 retries
[ 1.010734] ata1: SATA link down (SStatus 0 SControl 300)
[ 10.686002] Waiting up to 110 more seconds for network.
...
