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Date: Wed, 29 Mar 2017 16:30:14 -0400
From: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
To: netdev@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, kernel@...oirfairelinux.com,
"David S. Miller" <davem@...emloft.net>,
Florian Fainelli <f.fainelli@...il.com>,
Andrew Lunn <andrew@...n.ch>,
Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Subject: [PATCH net-next 3/9] net: dsa: mv88e6xxx: program the PVT with all ones
The Cross-chip Port Based VLAN Table (PVT) is currently initialized with
all ones, allowing any external ports to egress frames on local ports.
This commit implements the PVT access functions and programs the PVT
with all ones for the local switch ports only, instead of using the Init
operation. The current behavior is unchanged for the moment.
Signed-off-by: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
---
drivers/net/dsa/mv88e6xxx/chip.c | 31 +++++++++++++++++++++-
drivers/net/dsa/mv88e6xxx/global2.c | 52 +++++++++++++++++++++++++++++++------
drivers/net/dsa/mv88e6xxx/global2.h | 8 ++++++
3 files changed, 82 insertions(+), 9 deletions(-)
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 4aa083674a00..955c7e672423 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1198,15 +1198,44 @@ static int mv88e6xxx_atu_setup(struct mv88e6xxx_chip *chip)
return mv88e6xxx_g1_atu_set_age_time(chip, 300000);
}
+static int mv88e6xxx_pvt_map(struct mv88e6xxx_chip *chip, int dev, int port)
+{
+ u16 pvlan = 0;
+
+ if (!mv88e6xxx_has_pvt(chip))
+ return -EOPNOTSUPP;
+
+ /* Skip the local source device, which uses in-chip port VLAN */
+ if (dev != chip->ds->index)
+ pvlan = mv88e6xxx_port_mask(chip);
+
+ return mv88e6xxx_g2_pvt_write(chip, dev, port, pvlan);
+}
+
static int mv88e6xxx_pvt_setup(struct mv88e6xxx_chip *chip)
{
+ int dev, port;
+ int err;
+
if (!mv88e6xxx_has_pvt(chip))
return 0;
/* Clear 5 Bit Port for usage with Marvell Link Street devices:
* use 4 bits for the Src_Port/Src_Trunk and 5 bits for the Src_Dev.
*/
- return mv88e6xxx_g2_misc_5_bit_port(chip, false);
+ err = mv88e6xxx_g2_misc_5_bit_port(chip, false);
+ if (err)
+ return err;
+
+ for (dev = 0; dev < 32; ++dev) {
+ for (port = 0; port < 16; ++port) {
+ err = mv88e6xxx_pvt_map(chip, dev, port);
+ if (err)
+ return err;
+ }
+ }
+
+ return 0;
}
static void mv88e6xxx_port_fast_age(struct dsa_switch *ds, int port)
diff --git a/drivers/net/dsa/mv88e6xxx/global2.c b/drivers/net/dsa/mv88e6xxx/global2.c
index 001ef7d69bc6..6ec8ba99903e 100644
--- a/drivers/net/dsa/mv88e6xxx/global2.c
+++ b/drivers/net/dsa/mv88e6xxx/global2.c
@@ -171,6 +171,50 @@ static int mv88e6xxx_g2_clear_irl(struct mv88e6xxx_chip *chip)
return err;
}
+/* Offset 0x0B: Cross-chip Port VLAN (Addr) Register
+ * Offset 0x0C: Cross-chip Port VLAN Data Register
+ */
+
+static int mv88e6xxx_g2_pvt_op_wait(struct mv88e6xxx_chip *chip)
+{
+ return mv88e6xxx_g2_wait(chip, GLOBAL2_PVT_ADDR, GLOBAL2_PVT_ADDR_BUSY);
+}
+
+static int mv88e6xxx_g2_pvt_op(struct mv88e6xxx_chip *chip, int src_dev,
+ int src_port, u16 op)
+{
+ int err;
+
+ /* 9-bit Cross-chip PVT pointer: with GLOBAL2_MISC_5_BIT_PORT cleared,
+ * source device is 5-bit, source port is 4-bit.
+ */
+ op |= (src_dev & 0x1f) << 4;
+ op |= (src_port & 0xf);
+
+ err = mv88e6xxx_g2_write(chip, GLOBAL2_PVT_ADDR, op);
+ if (err)
+ return err;
+
+ return mv88e6xxx_g2_pvt_op_wait(chip);
+}
+
+int mv88e6xxx_g2_pvt_write(struct mv88e6xxx_chip *chip, int src_dev,
+ int src_port, u16 data)
+{
+ int err;
+
+ err = mv88e6xxx_g2_pvt_op_wait(chip);
+ if (err)
+ return err;
+
+ err = mv88e6xxx_g2_write(chip, GLOBAL2_PVT_DATA, data);
+ if (err)
+ return err;
+
+ return mv88e6xxx_g2_pvt_op(chip, src_dev, src_port,
+ GLOBAL2_PVT_ADDR_OP_WRITE_PVLAN);
+}
+
/* Offset 0x0D: Switch MAC/WoL/WoF register */
static int mv88e6xxx_g2_switch_mac_write(struct mv88e6xxx_chip *chip,
@@ -984,14 +1028,6 @@ int mv88e6xxx_g2_setup(struct mv88e6xxx_chip *chip)
return err;
}
- if (mv88e6xxx_has_pvt(chip)) {
- /* Initialize Cross-chip Port VLAN Table to reset defaults */
- err = mv88e6xxx_g2_write(chip, GLOBAL2_PVT_ADDR,
- GLOBAL2_PVT_ADDR_OP_INIT_ONES);
- if (err)
- return err;
- }
-
if (mv88e6xxx_has(chip, MV88E6XXX_FLAG_G2_POT)) {
/* Clear the priority override table. */
err = mv88e6xxx_g2_clear_pot(chip);
diff --git a/drivers/net/dsa/mv88e6xxx/global2.h b/drivers/net/dsa/mv88e6xxx/global2.h
index fb69062902a9..7dcd55e63eef 100644
--- a/drivers/net/dsa/mv88e6xxx/global2.h
+++ b/drivers/net/dsa/mv88e6xxx/global2.h
@@ -42,6 +42,8 @@ int mv88e6xxx_g2_get_eeprom16(struct mv88e6xxx_chip *chip,
int mv88e6xxx_g2_set_eeprom16(struct mv88e6xxx_chip *chip,
struct ethtool_eeprom *eeprom, u8 *data);
+int mv88e6xxx_g2_pvt_write(struct mv88e6xxx_chip *chip, int src_dev,
+ int src_port, u16 data);
int mv88e6xxx_g2_misc_5_bit_port(struct mv88e6xxx_chip *chip, bool port_5_bit);
int mv88e6xxx_g2_setup(struct mv88e6xxx_chip *chip);
@@ -112,6 +114,12 @@ static inline int mv88e6xxx_g2_set_eeprom16(struct mv88e6xxx_chip *chip,
return -EOPNOTSUPP;
}
+int mv88e6xxx_g2_pvt_write(struct mv88e6xxx_chip *chip, int src_dev,
+ int src_port, u16 data)
+{
+ return -EOPNOTSUPP;
+}
+
int mv88e6xxx_g2_misc_5_bit_port(struct mv88e6xxx_chip *chip, bool port_5_bit)
{
return -EOPNOTSUPP;
--
2.12.1
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