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net: dsa: mv88e6xxx: support the VTU Page bit

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Newer chips such as the 88E6390 have a VTU Page bit in the VTU VID
register to specify a 13th bit for the VID. This can be used to support
8K VLANs.

When dumping the whole VTU, all VID bits must be set to one, including
this VTU Page bit. Add support for VID greater than 4095.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot
2017-05-01 14:05:26 -04:00
committed by David S. Miller
parent 567aa59a8b
commit 1ac758648b
2 changed files with 8 additions and 0 deletions
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7
drivers/net/dsa/mv88e6xxx/global1_vtu.c
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@@ -95,6 +95,10 @@ static int mv88e6xxx_g1_vtu_vid_read(struct mv88e6xxx_chip *chip,
return err;
entry->vid = val & 0xfff;
if (val & GLOBAL_VTU_VID_PAGE)
entry->vid |= 0x1000;
entry->valid = !!(val & GLOBAL_VTU_VID_VALID);
return 0;
@@ -105,6 +109,9 @@ static int mv88e6xxx_g1_vtu_vid_write(struct mv88e6xxx_chip *chip,
{
u16 val = entry->vid & 0xfff;
if (entry->vid & 0x1000)
val |= GLOBAL_VTU_VID_PAGE;
if (entry->valid)
val |= GLOBAL_VTU_VID_VALID;