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net: dsa: mv88e6xxx: support 256 databases 

The 6185 family of devices has only 256 address databases. Their 8-bit
FID for ATU and VTU operations are split into ATU Control and ATU/VTU
Operation registers.

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 2016-03-31 16:53:44 -04:00 committed by David S. Miller
parent f74df0be82
commit 11ea809f1a
1 changed files with 35 additions and 1 deletions
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36
drivers/net/dsa/mv88e6xxx.c
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@ -1003,6 +1003,20 @@ static int _mv88e6xxx_atu_cmd(struct dsa_switch *ds, u16 fid, u16 cmd)
ret = _mv88e6xxx_reg_write(ds, REG_GLOBAL, GLOBAL_ATU_FID, fid);
if (ret < 0)
return ret;
} else if (mv88e6xxx_num_databases(ds) == 256) {
/* ATU DBNum[7:4] are located in ATU Control 15:12 */
ret = _mv88e6xxx_reg_read(ds, REG_GLOBAL, GLOBAL_ATU_CONTROL);
if (ret < 0)
return ret;
ret = _mv88e6xxx_reg_write(ds, REG_GLOBAL, GLOBAL_ATU_CONTROL,
(ret & 0xfff) |
((fid << 8) & 0xf000));
if (ret < 0)
return ret;
/* ATU DBNum[3:0] are located in ATU Operation 3:0 */
cmd |= fid & 0xf;
}
ret = _mv88e6xxx_reg_write(ds, REG_GLOBAL, GLOBAL_ATU_OP, cmd);
@ -1373,6 +1387,17 @@ static int _mv88e6xxx_vtu_getnext(struct dsa_switch *ds,
return ret;
next.fid = ret & GLOBAL_VTU_FID_MASK;
} else if (mv88e6xxx_num_databases(ds) == 256) {
/* VTU DBNum[7:4] are located in VTU Operation 11:8, and
* VTU DBNum[3:0] are located in VTU Operation 3:0
*/
ret = _mv88e6xxx_reg_read(ds, REG_GLOBAL,
GLOBAL_VTU_OP);
if (ret < 0)
return ret;
next.fid = (ret & 0xf00) >> 4;
next.fid |= ret & 0xf;
}
if (mv88e6xxx_has_stu(ds)) {
@ -1443,6 +1468,7 @@ unlock:
static int _mv88e6xxx_vtu_loadpurge(struct dsa_switch *ds,
struct mv88e6xxx_vtu_stu_entry *entry)
{
u16 op = GLOBAL_VTU_OP_VTU_LOAD_PURGE;
u16 reg = 0;
int ret;
@ -1470,6 +1496,12 @@ static int _mv88e6xxx_vtu_loadpurge(struct dsa_switch *ds,
ret = _mv88e6xxx_reg_write(ds, REG_GLOBAL, GLOBAL_VTU_FID, reg);
if (ret < 0)
return ret;
} else if (mv88e6xxx_num_databases(ds) == 256) {
/* VTU DBNum[7:4] are located in VTU Operation 11:8, and
* VTU DBNum[3:0] are located in VTU Operation 3:0
*/
op |= (entry->fid & 0xf0) << 8;
op |= entry->fid & 0xf;
}
reg = GLOBAL_VTU_VID_VALID;
@ -1479,7 +1511,7 @@ loadpurge:
if (ret < 0)
return ret;
return _mv88e6xxx_vtu_cmd(ds, GLOBAL_VTU_OP_VTU_LOAD_PURGE);
return _mv88e6xxx_vtu_cmd(ds, op);
}
static int _mv88e6xxx_stu_getnext(struct dsa_switch *ds, u8 sid,
@ -1564,6 +1596,8 @@ static int _mv88e6xxx_port_fid(struct dsa_switch *ds, int port, u16 *new,
if (mv88e6xxx_num_databases(ds) == 4096)
upper_mask = 0xff;
else if (mv88e6xxx_num_databases(ds) == 256)
upper_mask = 0xf;
else
return -EOPNOTSUPP;