• Florian Fainelli's avatar
    net: dsa: bcm_sf2: Utilize core B53 driver when possible · f458995b
    Florian Fainelli authored
    The Broadcom Starfighter2 is almost entirely register compatible with
    B53, yet for historical reasons came up first in the tree and is now
    being updated to utilize b53_common.c to the fullest extent possible. A
    few things need to be adjusted to allow that:
    
    - the switch "core" registers currently operate on a 32-bit address,
      whereas b53 passes a page + reg pair to offset from, so we need to
      convert that, thankfully there is a generic formula to do that
    
    - the link managemenent is not self contained with the B53/CORE register
      set, but instead is in the SWITCH_REG block which is part of the
      integration glue logic, so we keep that entirely custom here because
      this really is part of the existing bcm_sf2 implementation
    
    - there are additional power management constraints on the port's
      memories that make us keep the port_enable/disable callbacks custom
      for now, also, we support tagging whereas b53_common does not support
      that yet
    
    All the VLAN and bridge code is entirely identical though so, avoid
    duplicating it. Other things will be migrated in the future like EEE and
    possibly Wake-on-LAN.
    Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    f458995b
bcm_sf2.h 5.6 KB