diff mbox series

[net-next,v2,1/2] net: dsa: mv88e6xxx: use mv88e6185_g1_vtu_getnext() for the 6250

Message ID 20210125150449.115032-2-rasmus.villemoes@prevas.dk (mailing list archive)
State Accepted
Commit 67c9ed1c8809d554082a30a1b38b460a6e8405c0
Delegated to: Netdev Maintainers
Headers show
Series net: dsa: mv88e6xxx: remove some 6250-specific methods | expand

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netdev/checkpatch warning WARNING: line length of 90 exceeds 80 columns
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netdev/stable success Stable not CCed

Commit Message

Rasmus Villemoes Jan. 25, 2021, 3:04 p.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].

Reviewed-by: Tobias Waldekranz <tobias@waldekranz.com>
Tested-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
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

Vladimir Oltean Jan. 26, 2021, 9:53 p.m. UTC | #1 
On Mon, Jan 25, 2021 at 04:04:48PM +0100, 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].
> 
> Reviewed-by: Tobias Waldekranz <tobias@waldekranz.com>
> Tested-by: Tobias Waldekranz <tobias@waldekranz.com>
> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
> Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
> ---

Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
diff mbox series

Patch

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;