[PATCH net-next v2 08/17] net: dsa: mv88e6xxx: rework ATU Flush

From: Vivien Didelot
Date: Sat Mar 11 2017 - 16:16:44 EST


Add a fresh documented implementation of the ATU Flush/Move operation.
Use it to replace the current ATU Flush operation.

_mv88e6xxx_atu_flush_move is still used by the Move operation so keep it
until the Move operation is refactored in a next commit.

Signed-off-by: Vivien Didelot <vivien.didelot@xxxxxxxxxxxxxxxxxxxx>
---
drivers/net/dsa/mv88e6xxx/chip.c | 22 +++++---------------
drivers/net/dsa/mv88e6xxx/global1.h | 1 +
drivers/net/dsa/mv88e6xxx/global1_atu.c | 37 +++++++++++++++++++++++++++++++++
3 files changed, 43 insertions(+), 17 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 2d1ec0d79fb6..8b8c3cb167c1 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1210,17 +1210,6 @@ static int _mv88e6xxx_atu_flush_move(struct mv88e6xxx_chip *chip,
return _mv88e6xxx_atu_cmd(chip, entry->fid, op);
}

-static int _mv88e6xxx_atu_flush(struct mv88e6xxx_chip *chip,
- u16 fid, bool static_too)
-{
- struct mv88e6xxx_atu_entry entry = {
- .fid = fid,
- .state = 0, /* EntryState bits must be 0 */
- };
-
- return _mv88e6xxx_atu_flush_move(chip, &entry, static_too);
-}
-
static int _mv88e6xxx_atu_move(struct mv88e6xxx_chip *chip, u16 fid,
int from_port, int to_port, bool static_too)
{
@@ -1310,6 +1299,10 @@ static int mv88e6xxx_atu_setup(struct mv88e6xxx_chip *chip)
{
int err;

+ err = mv88e6xxx_g1_atu_flush(chip, 0, true);
+ if (err)
+ return err;
+
err = mv88e6xxx_g1_atu_set_learn2all(chip, true);
if (err)
return err;
@@ -1714,7 +1707,7 @@ static int _mv88e6xxx_fid_new(struct mv88e6xxx_chip *chip, u16 *fid)
return -ENOSPC;

/* Clear the database */
- return _mv88e6xxx_atu_flush(chip, *fid, true);
+ return mv88e6xxx_g1_atu_flush(chip, *fid, true);
}

static int _mv88e6xxx_vtu_new(struct mv88e6xxx_chip *chip, u16 vid,
@@ -2634,11 +2627,6 @@ static int mv88e6xxx_g1_setup(struct mv88e6xxx_chip *chip)
if (err < 0)
return err;

- /* Clear all ATU entries */
- err = _mv88e6xxx_atu_flush(chip, 0, true);
- if (err)
- return err;
-
/* Configure the IP ToS mapping registers. */
err = mv88e6xxx_g1_write(chip, GLOBAL_IP_PRI_0, 0x0000);
if (err)
diff --git a/drivers/net/dsa/mv88e6xxx/global1.h b/drivers/net/dsa/mv88e6xxx/global1.h
index 8dd8ecc9f064..187acfc8ed37 100644
--- a/drivers/net/dsa/mv88e6xxx/global1.h
+++ b/drivers/net/dsa/mv88e6xxx/global1.h
@@ -45,5 +45,6 @@ int mv88e6xxx_g1_atu_getnext(struct mv88e6xxx_chip *chip, u16 fid,
struct mv88e6xxx_atu_entry *entry);
int mv88e6xxx_g1_atu_loadpurge(struct mv88e6xxx_chip *chip, u16 fid,
struct mv88e6xxx_atu_entry *entry);
+int mv88e6xxx_g1_atu_flush(struct mv88e6xxx_chip *chip, u16 fid, bool all);

#endif /* _MV88E6XXX_GLOBAL1_H */
diff --git a/drivers/net/dsa/mv88e6xxx/global1_atu.c b/drivers/net/dsa/mv88e6xxx/global1_atu.c
index 94e940522849..7ec9b22feaee 100644
--- a/drivers/net/dsa/mv88e6xxx/global1_atu.c
+++ b/drivers/net/dsa/mv88e6xxx/global1_atu.c
@@ -232,3 +232,40 @@ int mv88e6xxx_g1_atu_loadpurge(struct mv88e6xxx_chip *chip, u16 fid,

return mv88e6xxx_g1_atu_op(chip, fid, GLOBAL_ATU_OP_LOAD_DB);
}
+
+static int mv88e6xxx_g1_atu_flushmove(struct mv88e6xxx_chip *chip, u16 fid,
+ struct mv88e6xxx_atu_entry *entry,
+ bool all)
+{
+ u16 op;
+ int err;
+
+ err = mv88e6xxx_g1_atu_op_wait(chip);
+ if (err)
+ return err;
+
+ err = mv88e6xxx_g1_atu_data_write(chip, entry);
+ if (err)
+ return err;
+
+ /* Flush/Move all or non-static entries from all or a given database */
+ if (all && fid)
+ op = GLOBAL_ATU_OP_FLUSH_MOVE_ALL_DB;
+ else if (fid)
+ op = GLOBAL_ATU_OP_FLUSH_MOVE_NON_STATIC_DB;
+ else if (all)
+ op = GLOBAL_ATU_OP_FLUSH_MOVE_ALL;
+ else
+ op = GLOBAL_ATU_OP_FLUSH_MOVE_NON_STATIC;
+
+ return mv88e6xxx_g1_atu_op(chip, fid, op);
+}
+
+int mv88e6xxx_g1_atu_flush(struct mv88e6xxx_chip *chip, u16 fid, bool all)
+{
+ struct mv88e6xxx_atu_entry entry = {
+ .state = 0, /* Null EntryState means Flush */
+ };
+
+ return mv88e6xxx_g1_atu_flushmove(chip, fid, &entry, all);
+}
--
2.12.0