Re: FW: ixg(4) performances

[manu%netbsd.org@localhost (Emmanuel Dreyfus)]

Terry Moore <tmm%mcci.com@localhost> wrote:

> Since you did a dword read, the extra 0x9.... is the device status register.
> This makes me suspicious as the device status register is claiming that you
> have "unsupported request detected)" [bit 3] and "correctable error
> detected" [bit 0].  Further, this register is RW1C for all these bits -- so
> when you write 94810, it should have cleared the 9 (so a subsequent read
> should have returned 4810).
> 
> Please check.

You are right;
# pcictl /dev/pci5 read -d 0 -f 1 0xa8  
00092810
# pcictl /dev/pci5 write -d 0 -f 1 0xa8 0x00094810
# pcictl /dev/pci5 read -d 0 -f 1 0xa8             
00004810

> Might be good to post a "pcictl dump" of your device, just to expose all the
> details.

It explicitely says 2.5 Gb/s x 8 lanes

# pcictl /dev/pci5 dump -d0 -f 1
PCI configuration registers:
  Common header:
    0x00: 0x10fb8086 0x00100107 0x02000001 0x00800010

    Vendor Name: Intel (0x8086)
    Device Name: 82599 (SFI/SFP+) 10 GbE Controller (0x10fb)
    Command register: 0x0107
      I/O space accesses: on
      Memory space accesses: on
      Bus mastering: on
      Special cycles: off
      MWI transactions: off
      Palette snooping: off
      Parity error checking: off
      Address/data stepping: off
      System error (SERR): on
      Fast back-to-back transactions: off
      Interrupt disable: off
    Status register: 0x0010
      Interrupt status: inactive
      Capability List support: on
      66 MHz capable: off
      User Definable Features (UDF) support: off
      Fast back-to-back capable: off
      Data parity error detected: off
      DEVSEL timing: fast (0x0)
      Slave signaled Target Abort: off
      Master received Target Abort: off
      Master received Master Abort: off
      Asserted System Error (SERR): off
      Parity error detected: off
    Class Name: network (0x02)
    Subclass Name: ethernet (0x00)
    Interface: 0x00
    Revision ID: 0x01
    BIST: 0x00
    Header Type: 0x00+multifunction (0x80)
    Latency Timer: 0x00
    Cache Line Size: 0x10

  Type 0 ("normal" device) header:
    0x10: 0xdfe8000c 0x00000000 0x0000bc01 0x00000000
    0x20: 0xdfe7c00c 0x00000000 0x00000000 0x00038086
    0x30: 0x00000000 0x00000040 0x00000000 0x00000209

    Base address register at 0x10
      type: 64-bit prefetchable memory
      base: 0x00000000dfe80000, not sized
    Base address register at 0x18
      type: i/o
      base: 0x0000bc00, not sized
    Base address register at 0x1c
      not implemented(?)
    Base address register at 0x20
      type: 64-bit prefetchable memory
      base: 0x00000000dfe7c000, not sized
    Cardbus CIS Pointer: 0x00000000
    Subsystem vendor ID: 0x8086
    Subsystem ID: 0x0003
    Expansion ROM Base Address: 0x00000000
    Capability list pointer: 0x40
    Reserved @ 0x38: 0x00000000
    Maximum Latency: 0x00
    Minimum Grant: 0x00
    Interrupt pin: 0x02 (pin B)
    Interrupt line: 0x09

  Capability register at 0x40
    type: 0x01 (Power Management, rev. 1.0)
  Capability register at 0x50
    type: 0x05 (MSI)
  Capability register at 0x70
    type: 0x11 (MSI-X)
  Capability register at 0xa0
    type: 0x10 (PCI Express)

  PCI Message Signaled Interrupt
    Message Control register: 0x0180
      MSI Enabled: no
      Multiple Message Capable: no (1 vector)
      Multiple Message Enabled: off (1 vector)
      64 Bit Address Capable: yes
      Per-Vector Masking Capable: yes
    Message Address (lower) register: 0x00000000
    Message Address (upper) register: 0x00000000
    Message Data register: 0x00000000
    Vector Mask register: 0x00000000
    Vector Pending register: 0x00000000

  PCI Power Management Capabilities Register
    Capabilities register: 0x4823
      Version: 1.2
      PME# clock: off
      Device specific initialization: on
      3.3V auxiliary current: self-powered
      D1 power management state support: off
      D2 power management state support: off
      PME# support: 0x09
    Control/status register: 0x2000
      Power state: D0
      PCI Express reserved: off
      No soft reset: off
      PME# assertion disabled
      PME# status: off

  PCI Express Capabilities Register
    Capability version: 2
    Device type: PCI Express Endpoint device
    Interrupt Message Number: 0
    Link Capabilities Register: 0x00027482
      Maximum Link Speed: unknown 2 value
      Maximum Link Width: x8 lanes
      Port Number: 0
    Link Status Register: 0x1081
      Negotiated Link Speed: 2.5Gb/s
      Negotiated Link Width: x8 lanes

  Device-dependent header:
    0x40: 0x48235001 0x2b002000 0x00000000 0x00000000
    0x50: 0x01807005 0x00000000 0x00000000 0x00000000
    0x60: 0x00000000 0x00000000 0x00000000 0x00000000
    0x70: 0x003fa011 0x00000004 0x00002004 0x00000000
    0x80: 0x00000000 0x00000000 0x00000000 0x00000000
    0x90: 0x00000000 0x00000000 0x00000000 0x00000000
    0xa0: 0x00020010 0x10008cc2 0x00004810 0x00027482
    0xb0: 0x10810000 0x00000000 0x00000000 0x00000000
    0xc0: 0x00000000 0x0000001f 0x00000000 0x00000000
    0xd0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xe0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xf0: 0x00000000 0x00000000 0x00000000 0x00000000


-- 
Emmanuel Dreyfus
http://hcpnet.free.fr/pubz
manu%netbsd.org@localhost