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Date: Sat, 15 Dec 2018 09:28:41 -0800
From: Florian Fainelli <f.fainelli@...il.com>
To: Vivien Didelot <vivien.didelot@...il.com>, netdev@...r.kernel.org
Cc: Chris Healy <cphealy@...il.com>,
"John W . Linville" <linville@...driver.com>, andrew@...n.ch
Subject: Re: [PATCH 0/7] ethtool: add pretty dump for DSA mv88e6xxx drivers
Hi Vivien,
Le 12/14/18 à 6:50 PM, Vivien Didelot a écrit :
> This patch series adds support to pretty dump the registers of user
> ports created by the kernel "dsa" subsystem.
>
> The first patch adds the base support for "dsa" interfaces.
>
> The second patch adds the boilerplate for the "mv88e6xxx" DSA driver,
> all using 32 registers of 16 bits, the switch ID being available in
> the port identification register 3. Support for other DSA drivers such
> as "b53" or "ksz" can be added similarly later. Because the different
> switches supported by mv88e6xxx have slightly different register layout,
> we keep it simple and stupid by providing one dump function per switch.
This looks good to me, the only "concern" is that mv88e6xxx set
regs->version = 0, while we could probably put the switch model in there
directly which would avoid other drivers to have to put the chip ID in
regs[3] since that may, or may not be convenient.
For instance the B53 devices are organized by page (0-255), and then by
offsets (0-255 again). Within a page, there are registers that are
really per-port and some that are global. Also, registers can be
8/16/32/48/64 bits (which is going to be interesting to support).
>
> The remaining patches add support for the switch models currently
> supported by the mv88e6xxx driver. Here's an example of dump of the
> 32 registers of a 88E6352 port:
>
> # ethtool -d lan3
> 88E6352 Switch Port Registers
> ------------------------------
> 00: Port Status 0x500f
> Pause Enabled 0
> My Pause 1
> 802.3 PHY Detected 1
> Link Status Down
> Duplex Half
> Speed 10 Mbps
> EEE Enabled 0
> Transmitter Paused 0
> Flow Control 0
> Config Mode 0xf
> 01: Physical Control 0x0003
> RGMII Receive Timing Control Default
> RGMII Transmit Timing Control Default
> 200 BASE Mode 100
> Flow Control's Forced value 0
> Force Flow Control 0
> Link's Forced value Down
> Force Link 0
> Duplex's Forced value Half
> Force Duplex 0
> Force Speed Not forced
> 02: Jamming Control 0x0000
> 03: Switch Identifier 0x3521
> 04: Port Control 0x0433
> Source Address Filtering controls Disabled
> Egress Mode Unmodified
> Ingress & Egress Header Mode 0
> IGMP and MLD Snooping 1
> Frame Mode Normal
> VLAN Tunnel 0
> TagIfBoth 0
> Initial Priority assignment Tag & IP Priority
> Egress Flooding mode No unknown DA
> Port State Forwarding
> 05: Port Control 1 0x0000
> Message Port 0
> Trunk Port 0
> Trunk ID 0
> FID[11:4] 0x000
> 06: Port Base VLAN Map (Header) 0x0060
> FID[3:0] 0x000
> VLANTable 5 6
> 07: Default VLAN ID & Priority 0x0000
> Default Priority 0x0
> Force to use Default VID 0
> Default VLAN Identifier 0
> 08: Port Control 2 0x2080
> Force good FCS in the frame 0
> Jumbo Mode 10240
> 802.1QMode Disabled
> Discard Tagged Frames 0
> Discard Untagged Frames 0
> Map using DA hits 1
> ARP Mirror enable 0
> Egress Monitor Source Port 0
> Ingress Monitor Source Port 0
> Use Default Queue Priority 0
> Default Queue Priority 0x0
> 09: Egress Rate Control 0x0001
> 10: Egress Rate Control 2 0x0000
> 11: Port Association Vector 0x0001
> 12: Port ATU Control 0x0000
> 13: Override 0x0000
> 14: Policy Control 0x0000
> 15: Port Ether Type 0x9100
> 16: InDiscardsLo Frame Counter 0x0000
> 17: InDiscardsHi Frame Counter 0x0000
> 18: InFiltered/TcamCtr Frame Counter 0x0000
> 19: Rx Frame Counter 0x0000
> 20: Reserved 0x0000
> 21: Reserved 0x0000
> 22: LED Control 0x0022
> 23: Reserved 0x0000
> 24: Tag Remap 0-3 0x3210
> 25: Tag Remap 4-7 0x7654
> 26: Reserved 0x0000
> 27: Queue Counters 0x8000
> 28: Reserved 0x0000
> 29: Reserved 0x0000
> 30: Reserved 0x0000
> 31: Reserved 0x0000
>
>
> Vivien Didelot (7):
> ethtool: dsa: add pretty dump
> ethtool: dsa: mv88e6xxx: add pretty dump
> ethtool: dsa: mv88e6xxx: add pretty dump for 88E6185
> ethtool: dsa: mv88e6xxx: add pretty dump for 88E6161
> ethtool: dsa: mv88e6xxx: add pretty dump for 88E6352
> ethtool: dsa: mv88e6xxx: add pretty dump for 88E6390
> ethtool: dsa: mv88e6xxx: pretty dump others
>
> Makefile.am | 2 +-
> dsa.c | 685 ++++++++++++++++++++++++++++++++++++++++++++++++++++
> ethtool.c | 1 +
> internal.h | 3 +
> 4 files changed, 690 insertions(+), 1 deletion(-)
> create mode 100644 dsa.c
>
--
Florian
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