[PATCH net-next 07/18] net: dsa: mv88e6xxx: move VTU VID accessors

From: Vivien Didelot
Date: Wed Apr 26 2017 - 11:59:04 EST

Add helpers to access the VTU VID register in the global1_vtu.c file.

Signed-off-by: Vivien Didelot <vivien.didelot@xxxxxxxxxxxxxxxxxxxx>
---
drivers/net/dsa/mv88e6xxx/chip.c | 57 +++++++++++++--------------------
drivers/net/dsa/mv88e6xxx/global1.h | 4 +++
drivers/net/dsa/mv88e6xxx/global1_vtu.c | 29 +++++++++++++++++
3 files changed, 56 insertions(+), 34 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index ec621879439d..dce490e78347 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1337,12 +1337,6 @@ static int mv88e6xxx_stu_data_write(struct mv88e6xxx_chip *chip,
return _mv88e6xxx_vtu_stu_data_write(chip, entry, 2);
}

-static int _mv88e6xxx_vtu_vid_write(struct mv88e6xxx_chip *chip, u16 vid)
-{
- return mv88e6xxx_g1_write(chip, GLOBAL_VTU_VID,
- vid & GLOBAL_VTU_VID_MASK);
-}
-
static int _mv88e6xxx_vtu_getnext(struct mv88e6xxx_chip *chip,
struct mv88e6xxx_vtu_entry *entry)
{
@@ -1358,13 +1352,10 @@ static int _mv88e6xxx_vtu_getnext(struct mv88e6xxx_chip *chip,
if (err)
return err;

- err = mv88e6xxx_g1_read(chip, GLOBAL_VTU_VID, &val);
+ err = mv88e6xxx_g1_vtu_vid_read(chip, &next);
if (err)
return err;

- next.vid = val & GLOBAL_VTU_VID_MASK;
- next.valid = !!(val & GLOBAL_VTU_VID_VALID);
-
if (next.valid) {
err = mv88e6xxx_vtu_data_read(chip, &next);
if (err)
@@ -1410,7 +1401,9 @@ static int mv88e6xxx_port_vlan_dump(struct dsa_switch *ds, int port,
int (*cb)(struct switchdev_obj *obj))
{
struct mv88e6xxx_chip *chip = ds->priv;
- struct mv88e6xxx_vtu_entry next;
+ struct mv88e6xxx_vtu_entry next = {
+ .vid = chip->info->max_vid,
+ };
u16 pvid;
int err;

@@ -1423,7 +1416,7 @@ static int mv88e6xxx_port_vlan_dump(struct dsa_switch *ds, int port,
if (err)
goto unlock;

- err = _mv88e6xxx_vtu_vid_write(chip, GLOBAL_VTU_VID_MASK);
+ err = mv88e6xxx_g1_vtu_vid_write(chip, &next);
if (err)
goto unlock;

@@ -1464,13 +1457,16 @@ static int _mv88e6xxx_vtu_loadpurge(struct mv88e6xxx_chip *chip,
struct mv88e6xxx_vtu_entry *entry)
{
u16 op = GLOBAL_VTU_OP_VTU_LOAD_PURGE;
- u16 reg = 0;
int err;

err = mv88e6xxx_g1_vtu_op_wait(chip);
if (err)
return err;

+ err = mv88e6xxx_g1_vtu_vid_write(chip, entry);
+ if (err)
+ return err;
+
if (!entry->valid)
goto loadpurge;

@@ -1496,14 +1492,7 @@ static int _mv88e6xxx_vtu_loadpurge(struct mv88e6xxx_chip *chip,
op |= (entry->fid & 0xf0) << 8;
op |= entry->fid & 0xf;
}
-
- reg = GLOBAL_VTU_VID_VALID;
loadpurge:
- reg |= entry->vid & GLOBAL_VTU_VID_MASK;
- err = mv88e6xxx_g1_write(chip, GLOBAL_VTU_VID, reg);
- if (err)
- return err;
-
return mv88e6xxx_g1_vtu_op(chip, op);
}

@@ -1513,7 +1502,6 @@ static int _mv88e6xxx_stu_getnext(struct mv88e6xxx_chip *chip, u8 sid,
struct mv88e6xxx_vtu_entry next = {
.sid = sid,
};
- u16 val;
int err;

err = mv88e6xxx_g1_vtu_op_wait(chip);
@@ -1532,12 +1520,10 @@ static int _mv88e6xxx_stu_getnext(struct mv88e6xxx_chip *chip, u8 sid,
if (err)
return err;

- err = mv88e6xxx_g1_read(chip, GLOBAL_VTU_VID, &val);
+ err = mv88e6xxx_g1_vtu_vid_read(chip, &next);
if (err)
return err;

- next.valid = !!(val & GLOBAL_VTU_VID_VALID);
-
if (next.valid) {
err = mv88e6xxx_stu_data_read(chip, &next);
if (err)
@@ -1551,7 +1537,6 @@ static int _mv88e6xxx_stu_getnext(struct mv88e6xxx_chip *chip, u8 sid,
static int _mv88e6xxx_stu_loadpurge(struct mv88e6xxx_chip *chip,
struct mv88e6xxx_vtu_entry *entry)
{
- u16 reg = 0;
int err;

err = mv88e6xxx_g1_vtu_op_wait(chip);
@@ -1565,10 +1550,8 @@ static int _mv88e6xxx_stu_loadpurge(struct mv88e6xxx_chip *chip,
err = mv88e6xxx_stu_data_write(chip, entry);
if (err)
return err;
-
- reg = GLOBAL_VTU_VID_VALID;
loadpurge:
- err = mv88e6xxx_g1_write(chip, GLOBAL_VTU_VID, reg);
+ err = mv88e6xxx_g1_vtu_vid_write(chip, entry);
if (err)
return err;

@@ -1582,7 +1565,9 @@ static int _mv88e6xxx_stu_loadpurge(struct mv88e6xxx_chip *chip,
static int mv88e6xxx_atu_new(struct mv88e6xxx_chip *chip, u16 *fid)
{
DECLARE_BITMAP(fid_bitmap, MV88E6XXX_N_FID);
- struct mv88e6xxx_vtu_entry vlan;
+ struct mv88e6xxx_vtu_entry vlan = {
+ .vid = chip->info->max_vid,
+ };
int i, err;

bitmap_zero(fid_bitmap, MV88E6XXX_N_FID);
@@ -1597,7 +1582,7 @@ static int mv88e6xxx_atu_new(struct mv88e6xxx_chip *chip, u16 *fid)
}

/* Set every FID bit used by the VLAN entries */
- err = _mv88e6xxx_vtu_vid_write(chip, GLOBAL_VTU_VID_MASK);
+ err = mv88e6xxx_g1_vtu_vid_write(chip, &vlan);
if (err)
return err;

@@ -1681,7 +1666,9 @@ static int _mv88e6xxx_vtu_get(struct mv88e6xxx_chip *chip, u16 vid,
if (!vid)
return -EINVAL;

- err = _mv88e6xxx_vtu_vid_write(chip, vid - 1);
+ entry->vid = vid - 1;
+ entry->valid = false;
+ err = mv88e6xxx_g1_vtu_vid_write(chip, entry);
if (err)
return err;

@@ -1706,7 +1693,9 @@ static int mv88e6xxx_port_check_hw_vlan(struct dsa_switch *ds, int port,
u16 vid_begin, u16 vid_end)
{
struct mv88e6xxx_chip *chip = ds->priv;
- struct mv88e6xxx_vtu_entry vlan;
+ struct mv88e6xxx_vtu_entry vlan = {
+ .vid = vid_begin - 1,
+ };
int i, err;

if (!vid_begin)
@@ -1714,7 +1703,7 @@ static int mv88e6xxx_port_check_hw_vlan(struct dsa_switch *ds, int port,

mutex_lock(&chip->reg_lock);

- err = _mv88e6xxx_vtu_vid_write(chip, vid_begin - 1);
+ err = mv88e6xxx_g1_vtu_vid_write(chip, &vlan);
if (err)
goto unlock;

@@ -2076,7 +2065,7 @@ static int mv88e6xxx_port_db_dump(struct mv88e6xxx_chip *chip, int port,
return err;

/* Dump VLANs' Filtering Information Databases */
- err = _mv88e6xxx_vtu_vid_write(chip, vlan.vid);
+ err = mv88e6xxx_g1_vtu_vid_write(chip, &vlan);
if (err)
return err;

diff --git a/drivers/net/dsa/mv88e6xxx/global1.h b/drivers/net/dsa/mv88e6xxx/global1.h
index 1bf235085215..22fe22bd82cd 100644
--- a/drivers/net/dsa/mv88e6xxx/global1.h
+++ b/drivers/net/dsa/mv88e6xxx/global1.h
@@ -58,6 +58,10 @@ int mv88e6xxx_g1_vtu_sid_read(struct mv88e6xxx_chip *chip,
struct mv88e6xxx_vtu_entry *entry);
int mv88e6xxx_g1_vtu_sid_write(struct mv88e6xxx_chip *chip,
struct mv88e6xxx_vtu_entry *entry);
+int mv88e6xxx_g1_vtu_vid_read(struct mv88e6xxx_chip *chip,
+ struct mv88e6xxx_vtu_entry *entry);
+int mv88e6xxx_g1_vtu_vid_write(struct mv88e6xxx_chip *chip,
+ struct mv88e6xxx_vtu_entry *entry);
int mv88e6xxx_g1_vtu_op_wait(struct mv88e6xxx_chip *chip);
int mv88e6xxx_g1_vtu_op(struct mv88e6xxx_chip *chip, u16 op);
int mv88e6xxx_g1_vtu_flush(struct mv88e6xxx_chip *chip);
diff --git a/drivers/net/dsa/mv88e6xxx/global1_vtu.c b/drivers/net/dsa/mv88e6xxx/global1_vtu.c
index 201c063d15f2..6ac3d0eeae6b 100644
--- a/drivers/net/dsa/mv88e6xxx/global1_vtu.c
+++ b/drivers/net/dsa/mv88e6xxx/global1_vtu.c
@@ -82,6 +82,35 @@ int mv88e6xxx_g1_vtu_op(struct mv88e6xxx_chip *chip, u16 op)
return mv88e6xxx_g1_vtu_op_wait(chip);
}

+/* Offset 0x06: VTU VID Register */
+
+int mv88e6xxx_g1_vtu_vid_read(struct mv88e6xxx_chip *chip,
+ struct mv88e6xxx_vtu_entry *entry)
+{
+ u16 val;
+ int err;
+
+ err = mv88e6xxx_g1_read(chip, GLOBAL_VTU_VID, &val);
+ if (err)
+ return err;
+
+ entry->vid = val & 0xfff;
+ entry->valid = !!(val & GLOBAL_VTU_VID_VALID);
+
+ return 0;
+}
+
+int mv88e6xxx_g1_vtu_vid_write(struct mv88e6xxx_chip *chip,
+ struct mv88e6xxx_vtu_entry *entry)
+{
+ u16 val = entry->vid & 0xfff;
+
+ if (entry->valid)
+ val |= GLOBAL_VTU_VID_VALID;
+
+ return mv88e6xxx_g1_write(chip, GLOBAL_VTU_VID, val);
+}
+
/* VLAN Translation Unit Operations */

int mv88e6xxx_g1_vtu_flush(struct mv88e6xxx_chip *chip)
--
2.12.2