[net-next,2/2] net: dsa: mv88e6xxx: use mv88e6185_g1_vtu_getnext() for the 6250
diff mbox series

Message ID 20210116023937.6225-3-rasmus.villemoes@prevas.dk
State New, archived
Headers show
Series
  • net: dsa: mv88e6xxx: fix vlan filtering for 6250
Related show

Commit Message

Rasmus Villemoes Jan. 16, 2021, 2:39 a.m. UTC
mv88e6250_g1_vtu_getnext is almost identical to
mv88e6185_g1_vtu_getnext, except for the 6250 only having 64 databases
instead of 256. We can reduce code duplication by simply masking off
the extra two garbage bits when assembling the fid from VTU op [3:0]
and [11:8].

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
---
 drivers/net/dsa/mv88e6xxx/chip.c        |  2 +-
 drivers/net/dsa/mv88e6xxx/global1.h     |  2 --
 drivers/net/dsa/mv88e6xxx/global1_vtu.c | 36 ++-----------------------
 3 files changed, 3 insertions(+), 37 deletions(-)

Comments

Florian Fainelli Jan. 16, 2021, 5:01 a.m. UTC | #1
On 1/15/2021 6:39 PM, Rasmus Villemoes wrote:
> mv88e6250_g1_vtu_getnext is almost identical to
> mv88e6185_g1_vtu_getnext, except for the 6250 only having 64 databases
> instead of 256. We can reduce code duplication by simply masking off
> the extra two garbage bits when assembling the fid from VTU op [3:0]
> and [11:8].
> 
> Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tobias Waldekranz Jan. 16, 2021, 12:22 p.m. UTC | #2
On Sat, Jan 16, 2021 at 03:39, Rasmus Villemoes <rasmus.villemoes@prevas.dk> wrote:
> mv88e6250_g1_vtu_getnext is almost identical to
> mv88e6185_g1_vtu_getnext, except for the 6250 only having 64 databases
> instead of 256. We can reduce code duplication by simply masking off
> the extra two garbage bits when assembling the fid from VTU op [3:0]
> and [11:8].
>
> Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>

We might also want to give mv88e6250_g1_vtu_loadpurge the same
treatment.

Reviewed-by: Tobias Waldekranz <tobias@waldekranz.com>
Tested-by: Tobias Waldekranz <tobias@waldekranz.com>

Patch
diff mbox series

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 5cc1465fd635..8a0df1e903bf 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -4023,7 +4023,7 @@  static const struct mv88e6xxx_ops mv88e6250_ops = {
 	.mgmt_rsvd2cpu = mv88e6352_g2_mgmt_rsvd2cpu,
 	.pot_clear = mv88e6xxx_g2_pot_clear,
 	.reset = mv88e6250_g1_reset,
-	.vtu_getnext = mv88e6250_g1_vtu_getnext,
+	.vtu_getnext = mv88e6185_g1_vtu_getnext,
 	.vtu_loadpurge = mv88e6250_g1_vtu_loadpurge,
 	.avb_ops = &mv88e6352_avb_ops,
 	.ptp_ops = &mv88e6250_ptp_ops,
diff --git a/drivers/net/dsa/mv88e6xxx/global1.h b/drivers/net/dsa/mv88e6xxx/global1.h
index 80a182c5b98a..d2dd2f4e4730 100644
--- a/drivers/net/dsa/mv88e6xxx/global1.h
+++ b/drivers/net/dsa/mv88e6xxx/global1.h
@@ -336,8 +336,6 @@  int mv88e6185_g1_vtu_getnext(struct mv88e6xxx_chip *chip,
 			     struct mv88e6xxx_vtu_entry *entry);
 int mv88e6185_g1_vtu_loadpurge(struct mv88e6xxx_chip *chip,
 			       struct mv88e6xxx_vtu_entry *entry);
-int mv88e6250_g1_vtu_getnext(struct mv88e6xxx_chip *chip,
-			     struct mv88e6xxx_vtu_entry *entry);
 int mv88e6250_g1_vtu_loadpurge(struct mv88e6xxx_chip *chip,
 			       struct mv88e6xxx_vtu_entry *entry);
 int mv88e6352_g1_vtu_getnext(struct mv88e6xxx_chip *chip,
diff --git a/drivers/net/dsa/mv88e6xxx/global1_vtu.c b/drivers/net/dsa/mv88e6xxx/global1_vtu.c
index 7b96396be609..519ae48ba96e 100644
--- a/drivers/net/dsa/mv88e6xxx/global1_vtu.c
+++ b/drivers/net/dsa/mv88e6xxx/global1_vtu.c
@@ -336,39 +336,6 @@  int mv88e6xxx_g1_vtu_getnext(struct mv88e6xxx_chip *chip,
 	return mv88e6xxx_g1_vtu_vid_read(chip, entry);
 }
 
-int mv88e6250_g1_vtu_getnext(struct mv88e6xxx_chip *chip,
-			     struct mv88e6xxx_vtu_entry *entry)
-{
-	u16 val;
-	int err;
-
-	err = mv88e6xxx_g1_vtu_getnext(chip, entry);
-	if (err)
-		return err;
-
-	if (entry->valid) {
-		err = mv88e6185_g1_vtu_data_read(chip, entry);
-		if (err)
-			return err;
-
-		err = mv88e6185_g1_stu_data_read(chip, entry);
-		if (err)
-			return err;
-
-		/* VTU DBNum[3:0] are located in VTU Operation 3:0
-		 * VTU DBNum[5:4] are located in VTU Operation 9:8
-		 */
-		err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_VTU_OP, &val);
-		if (err)
-			return err;
-
-		entry->fid = val & 0x000f;
-		entry->fid |= (val & 0x0300) >> 4;
-	}
-
-	return 0;
-}
-
 int mv88e6185_g1_vtu_getnext(struct mv88e6xxx_chip *chip,
 			     struct mv88e6xxx_vtu_entry *entry)
 {
@@ -389,7 +356,7 @@  int mv88e6185_g1_vtu_getnext(struct mv88e6xxx_chip *chip,
 			return err;
 
 		/* VTU DBNum[3:0] are located in VTU Operation 3:0
-		 * VTU DBNum[7:4] are located in VTU Operation 11:8
+		 * VTU DBNum[7:4] ([5:4] for 6250) are located in VTU Operation 11:8 (9:8)
 		 */
 		err = mv88e6xxx_g1_read(chip, MV88E6XXX_G1_VTU_OP, &val);
 		if (err)
@@ -397,6 +364,7 @@  int mv88e6185_g1_vtu_getnext(struct mv88e6xxx_chip *chip,
 
 		entry->fid = val & 0x000f;
 		entry->fid |= (val & 0x0f00) >> 4;
+		entry->fid &= mv88e6xxx_num_databases(chip) - 1;
 	}
 
 	return 0;