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Message-ID: <20240815022014.55275-3-Tristram.Ha@microchip.com>
Date: Wed, 14 Aug 2024 19:20:14 -0700
From: <Tristram.Ha@...rochip.com>
To: Woojung Huh <woojung.huh@...rochip.com>, <UNGLinuxDriver@...rochip.com>,
<devicetree@...r.kernel.org>, Andrew Lunn <andrew@...n.ch>, Florian Fainelli
<f.fainelli@...il.com>, Vladimir Oltean <olteanv@...il.com>, Rob Herring
<robh@...nel.org>
CC: Oleksij Rempel <o.rempel@...gutronix.de>, "David S. Miller"
<davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
<kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Krzysztof Kozlowski
<krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Marek Vasut
<marex@...x.de>, <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
Tristram Ha <tristram.ha@...rochip.com>
Subject: [PATCH net-next v4 2/2] net: dsa: microchip: Add KSZ8895/KSZ8864 switch support
From: Tristram Ha <tristram.ha@...rochip.com>
KSZ8895/KSZ8864 is a switch family between KSZ8863/73 and KSZ8795, so it
shares some registers and functions in those switches already
implemented in the KSZ DSA driver.
Signed-off-by: Tristram Ha <tristram.ha@...rochip.com>
---
drivers/net/dsa/microchip/ksz8795.c | 16 ++-
drivers/net/dsa/microchip/ksz_common.c | 130 +++++++++++++++++++-
drivers/net/dsa/microchip/ksz_common.h | 20 ++-
drivers/net/dsa/microchip/ksz_spi.c | 15 ++-
include/linux/platform_data/microchip-ksz.h | 2 +
5 files changed, 170 insertions(+), 13 deletions(-)
diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c
index d27b9c36d73f..c4b59e628945 100644
--- a/drivers/net/dsa/microchip/ksz8795.c
+++ b/drivers/net/dsa/microchip/ksz8795.c
@@ -121,6 +121,8 @@ int ksz8_change_mtu(struct ksz_device *dev, int port, int mtu)
case KSZ8765_CHIP_ID:
return ksz8795_change_mtu(dev, frame_size);
case KSZ8830_CHIP_ID:
+ case KSZ8864_CHIP_ID:
+ case KSZ8895_CHIP_ID:
return ksz8863_change_mtu(dev, frame_size);
}
@@ -317,7 +319,7 @@ static void ksz8863_r_mib_pkt(struct ksz_device *dev, int port, u16 addr,
void ksz8_r_mib_pkt(struct ksz_device *dev, int port, u16 addr,
u64 *dropped, u64 *cnt)
{
- if (ksz_is_ksz88x3(dev))
+ if (ksz_is_ksz88x3(dev) || ksz_is_8895_family(dev))
ksz8863_r_mib_pkt(dev, port, addr, dropped, cnt);
else
ksz8795_r_mib_pkt(dev, port, addr, dropped, cnt);
@@ -325,7 +327,7 @@ void ksz8_r_mib_pkt(struct ksz_device *dev, int port, u16 addr,
void ksz8_freeze_mib(struct ksz_device *dev, int port, bool freeze)
{
- if (ksz_is_ksz88x3(dev))
+ if (ksz_is_ksz88x3(dev) || ksz_is_8895_family(dev))
return;
/* enable the port for flush/freeze function */
@@ -343,7 +345,8 @@ void ksz8_port_init_cnt(struct ksz_device *dev, int port)
struct ksz_port_mib *mib = &dev->ports[port].mib;
u64 *dropped;
- if (!ksz_is_ksz88x3(dev)) {
+ /* For KSZ8795 family. */
+ if (ksz_is_ksz87xx(dev)) {
/* flush all enabled port MIB counters */
ksz_cfg(dev, REG_SW_CTRL_6, BIT(port), true);
ksz_cfg(dev, REG_SW_CTRL_6, SW_MIB_COUNTER_FLUSH, true);
@@ -542,11 +545,11 @@ static int ksz8_r_sta_mac_table(struct ksz_device *dev, u16 addr,
shifts[STATIC_MAC_FWD_PORTS];
alu->is_override = (data_hi & masks[STATIC_MAC_TABLE_OVERRIDE]) ? 1 : 0;
- /* KSZ8795 family switches have STATIC_MAC_TABLE_USE_FID and
+ /* KSZ8795/KSZ8895 family switches have STATIC_MAC_TABLE_USE_FID and
* STATIC_MAC_TABLE_FID definitions off by 1 when doing read on the
* static MAC table compared to doing write.
*/
- if (ksz_is_ksz87xx(dev))
+ if (ksz_is_ksz87xx(dev) || ksz_is_8895_family(dev))
data_hi >>= 1;
alu->is_static = true;
alu->is_use_fid = (data_hi & masks[STATIC_MAC_TABLE_USE_FID]) ? 1 : 0;
@@ -1617,7 +1620,8 @@ void ksz8_config_cpu_port(struct dsa_switch *ds)
for (i = 0; i < dev->phy_port_cnt; i++) {
p = &dev->ports[i];
- if (!ksz_is_ksz88x3(dev)) {
+ /* For KSZ8795 family. */
+ if (ksz_is_ksz87xx(dev)) {
ksz_pread8(dev, i, regs[P_REMOTE_STATUS], &remote);
if (remote & KSZ8_PORT_FIBER_MODE)
p->fiber = 1;
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index 1491099528be..8ea5eeb477c7 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -2,7 +2,7 @@
/*
* Microchip switch driver main logic
*
- * Copyright (C) 2017-2019 Microchip Technology Inc.
+ * Copyright (C) 2017-2024 Microchip Technology Inc.
*/
#include <linux/delay.h>
@@ -477,6 +477,61 @@ static const u8 ksz8795_shifts[] = {
[DYNAMIC_MAC_SRC_PORT] = 24,
};
+static const u16 ksz8895_regs[] = {
+ [REG_SW_MAC_ADDR] = 0x68,
+ [REG_IND_CTRL_0] = 0x6E,
+ [REG_IND_DATA_8] = 0x70,
+ [REG_IND_DATA_CHECK] = 0x72,
+ [REG_IND_DATA_HI] = 0x71,
+ [REG_IND_DATA_LO] = 0x75,
+ [REG_IND_MIB_CHECK] = 0x75,
+ [P_FORCE_CTRL] = 0x0C,
+ [P_LINK_STATUS] = 0x0E,
+ [P_LOCAL_CTRL] = 0x0C,
+ [P_NEG_RESTART_CTRL] = 0x0D,
+ [P_REMOTE_STATUS] = 0x0E,
+ [P_SPEED_STATUS] = 0x09,
+ [S_TAIL_TAG_CTRL] = 0x0C,
+ [P_STP_CTRL] = 0x02,
+ [S_START_CTRL] = 0x01,
+ [S_BROADCAST_CTRL] = 0x06,
+ [S_MULTICAST_CTRL] = 0x04,
+};
+
+static const u32 ksz8895_masks[] = {
+ [PORT_802_1P_REMAPPING] = BIT(7),
+ [SW_TAIL_TAG_ENABLE] = BIT(1),
+ [MIB_COUNTER_OVERFLOW] = BIT(7),
+ [MIB_COUNTER_VALID] = BIT(6),
+ [VLAN_TABLE_FID] = GENMASK(6, 0),
+ [VLAN_TABLE_MEMBERSHIP] = GENMASK(11, 7),
+ [VLAN_TABLE_VALID] = BIT(12),
+ [STATIC_MAC_TABLE_VALID] = BIT(21),
+ [STATIC_MAC_TABLE_USE_FID] = BIT(23),
+ [STATIC_MAC_TABLE_FID] = GENMASK(30, 24),
+ [STATIC_MAC_TABLE_OVERRIDE] = BIT(22),
+ [STATIC_MAC_TABLE_FWD_PORTS] = GENMASK(20, 16),
+ [DYNAMIC_MAC_TABLE_ENTRIES_H] = GENMASK(6, 0),
+ [DYNAMIC_MAC_TABLE_MAC_EMPTY] = BIT(7),
+ [DYNAMIC_MAC_TABLE_NOT_READY] = BIT(7),
+ [DYNAMIC_MAC_TABLE_ENTRIES] = GENMASK(31, 29),
+ [DYNAMIC_MAC_TABLE_FID] = GENMASK(22, 16),
+ [DYNAMIC_MAC_TABLE_SRC_PORT] = GENMASK(26, 24),
+ [DYNAMIC_MAC_TABLE_TIMESTAMP] = GENMASK(28, 27),
+};
+
+static const u8 ksz8895_shifts[] = {
+ [VLAN_TABLE_MEMBERSHIP_S] = 7,
+ [VLAN_TABLE] = 13,
+ [STATIC_MAC_FWD_PORTS] = 16,
+ [STATIC_MAC_FID] = 24,
+ [DYNAMIC_MAC_ENTRIES_H] = 3,
+ [DYNAMIC_MAC_ENTRIES] = 29,
+ [DYNAMIC_MAC_FID] = 16,
+ [DYNAMIC_MAC_TIMESTAMP] = 27,
+ [DYNAMIC_MAC_SRC_PORT] = 24,
+};
+
static const u16 ksz8863_regs[] = {
[REG_SW_MAC_ADDR] = 0x70,
[REG_IND_CTRL_0] = 0x79,
@@ -1368,6 +1423,61 @@ const struct ksz_chip_data ksz_switch_chips[] = {
.rd_table = &ksz8873_register_set,
},
+ [KSZ8864] = {
+ /* WARNING
+ * =======
+ * KSZ8864 is similar to KSZ8895, except the first port
+ * does not exist.
+ * external cpu
+ * KSZ8864 1,2,3 4
+ * KSZ8895 0,1,2,3 4
+ * port_cnt is configured as 5, even though it is 4
+ */
+ .chip_id = KSZ8864_CHIP_ID,
+ .dev_name = "KSZ8864",
+ .num_vlans = 4096,
+ .num_alus = 0,
+ .num_statics = 32,
+ .cpu_ports = 0x10, /* can be configured as cpu port */
+ .port_cnt = 5, /* total cpu and user ports */
+ .num_tx_queues = 4,
+ .num_ipms = 4,
+ .ops = &ksz8_dev_ops,
+ .phylink_mac_ops = &ksz8_phylink_mac_ops,
+ .mib_names = ksz88xx_mib_names,
+ .mib_cnt = ARRAY_SIZE(ksz88xx_mib_names),
+ .reg_mib_cnt = MIB_COUNTER_NUM,
+ .regs = ksz8895_regs,
+ .masks = ksz8895_masks,
+ .shifts = ksz8895_shifts,
+ .supports_mii = {false, false, false, false, true},
+ .supports_rmii = {false, false, false, false, true},
+ .internal_phy = {false, true, true, true, false},
+ },
+
+ [KSZ8895] = {
+ .chip_id = KSZ8895_CHIP_ID,
+ .dev_name = "KSZ8895",
+ .num_vlans = 4096,
+ .num_alus = 0,
+ .num_statics = 32,
+ .cpu_ports = 0x10, /* can be configured as cpu port */
+ .port_cnt = 5, /* total cpu and user ports */
+ .num_tx_queues = 4,
+ .num_ipms = 4,
+ .ops = &ksz8_dev_ops,
+ .phylink_mac_ops = &ksz8_phylink_mac_ops,
+ .mib_names = ksz88xx_mib_names,
+ .mib_cnt = ARRAY_SIZE(ksz88xx_mib_names),
+ .reg_mib_cnt = MIB_COUNTER_NUM,
+ .regs = ksz8895_regs,
+ .masks = ksz8895_masks,
+ .shifts = ksz8895_shifts,
+ .supports_mii = {false, false, false, false, true},
+ .supports_rmii = {false, false, false, false, true},
+ .internal_phy = {true, true, true, true, false},
+ },
+
[KSZ9477] = {
.chip_id = KSZ9477_CHIP_ID,
.dev_name = "KSZ9477",
@@ -2893,9 +3003,7 @@ static enum dsa_tag_protocol ksz_get_tag_protocol(struct dsa_switch *ds,
struct ksz_device *dev = ds->priv;
enum dsa_tag_protocol proto = DSA_TAG_PROTO_NONE;
- if (dev->chip_id == KSZ8795_CHIP_ID ||
- dev->chip_id == KSZ8794_CHIP_ID ||
- dev->chip_id == KSZ8765_CHIP_ID)
+ if (ksz_is_ksz87xx(dev) || ksz_is_8895_family(dev))
proto = DSA_TAG_PROTO_KSZ8795;
if (dev->chip_id == KSZ8830_CHIP_ID ||
@@ -3011,6 +3119,8 @@ static int ksz_max_mtu(struct dsa_switch *ds, int port)
case KSZ8765_CHIP_ID:
return KSZ8795_HUGE_PACKET_SIZE - VLAN_ETH_HLEN - ETH_FCS_LEN;
case KSZ8830_CHIP_ID:
+ case KSZ8864_CHIP_ID:
+ case KSZ8895_CHIP_ID:
return KSZ8863_HUGE_PACKET_SIZE - VLAN_ETH_HLEN - ETH_FCS_LEN;
case KSZ8563_CHIP_ID:
case KSZ8567_CHIP_ID:
@@ -3368,6 +3478,18 @@ static int ksz_switch_detect(struct ksz_device *dev)
else
return -ENODEV;
break;
+ case KSZ8895_FAMILY_ID:
+ if (id2 == KSZ8895_CHIP_ID_95 ||
+ id2 == KSZ8895_CHIP_ID_95R)
+ dev->chip_id = KSZ8895_CHIP_ID;
+ else
+ return -ENODEV;
+ ret = ksz_read8(dev, REG_KSZ8864_CHIP_ID, &id4);
+ if (ret)
+ return ret;
+ if (id4 & SW_KSZ8864)
+ dev->chip_id = KSZ8864_CHIP_ID;
+ break;
default:
ret = ksz_read32(dev, REG_CHIP_ID0, &id32);
if (ret)
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index 5f0a628b9849..313d2a64cdd4 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h
@@ -1,7 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* Microchip switch driver common header
*
- * Copyright (C) 2017-2019 Microchip Technology Inc.
+ * Copyright (C) 2017-2024 Microchip Technology Inc.
*/
#ifndef __KSZ_COMMON_H
@@ -200,6 +200,8 @@ enum ksz_model {
KSZ8794,
KSZ8765,
KSZ8830,
+ KSZ8864,
+ KSZ8895,
KSZ9477,
KSZ9896,
KSZ9897,
@@ -624,9 +626,16 @@ static inline bool ksz_is_ksz88x3(struct ksz_device *dev)
return dev->chip_id == KSZ8830_CHIP_ID;
}
+static inline bool ksz_is_8895_family(struct ksz_device *dev)
+{
+ return dev->chip_id == KSZ8895_CHIP_ID ||
+ dev->chip_id == KSZ8864_CHIP_ID;
+}
+
static inline bool is_ksz8(struct ksz_device *dev)
{
- return ksz_is_ksz87xx(dev) || ksz_is_ksz88x3(dev);
+ return ksz_is_ksz87xx(dev) || ksz_is_ksz88x3(dev) ||
+ ksz_is_8895_family(dev);
}
static inline int is_lan937x(struct ksz_device *dev)
@@ -655,6 +664,7 @@ static inline bool is_lan937x_tx_phy(struct ksz_device *dev, int port)
#define SW_FAMILY_ID_M GENMASK(15, 8)
#define KSZ87_FAMILY_ID 0x87
#define KSZ88_FAMILY_ID 0x88
+#define KSZ8895_FAMILY_ID 0x95
#define KSZ8_PORT_STATUS_0 0x08
#define KSZ8_PORT_FIBER_MODE BIT(7)
@@ -663,6 +673,12 @@ static inline bool is_lan937x_tx_phy(struct ksz_device *dev, int port)
#define KSZ87_CHIP_ID_94 0x6
#define KSZ87_CHIP_ID_95 0x9
#define KSZ88_CHIP_ID_63 0x3
+#define KSZ8895_CHIP_ID_95 0x4
+#define KSZ8895_CHIP_ID_95R 0x6
+
+/* KSZ8895 specific register */
+#define REG_KSZ8864_CHIP_ID 0xFE
+#define SW_KSZ8864 BIT(7)
#define SW_REV_ID_M GENMASK(7, 4)
diff --git a/drivers/net/dsa/microchip/ksz_spi.c b/drivers/net/dsa/microchip/ksz_spi.c
index 8e8d83213b04..f4287310e89f 100644
--- a/drivers/net/dsa/microchip/ksz_spi.c
+++ b/drivers/net/dsa/microchip/ksz_spi.c
@@ -2,7 +2,7 @@
/*
* Microchip ksz series register access through SPI
*
- * Copyright (C) 2017 Microchip Technology Inc.
+ * Copyright (C) 2017-2024 Microchip Technology Inc.
* Tristram Ha <Tristram.Ha@...rochip.com>
*/
@@ -60,6 +60,9 @@ static int ksz_spi_probe(struct spi_device *spi)
chip->chip_id == KSZ8794_CHIP_ID ||
chip->chip_id == KSZ8765_CHIP_ID)
regmap_config = ksz8795_regmap_config;
+ else if (chip->chip_id == KSZ8895_CHIP_ID ||
+ chip->chip_id == KSZ8864_CHIP_ID)
+ regmap_config = ksz8863_regmap_config;
else
regmap_config = ksz9477_regmap_config;
@@ -136,10 +139,18 @@ static const struct of_device_id ksz_dt_ids[] = {
.compatible = "microchip,ksz8863",
.data = &ksz_switch_chips[KSZ8830]
},
+ {
+ .compatible = "microchip,ksz8864",
+ .data = &ksz_switch_chips[KSZ8864]
+ },
{
.compatible = "microchip,ksz8873",
.data = &ksz_switch_chips[KSZ8830]
},
+ {
+ .compatible = "microchip,ksz8895",
+ .data = &ksz_switch_chips[KSZ8895]
+ },
{
.compatible = "microchip,ksz9477",
.data = &ksz_switch_chips[KSZ9477]
@@ -201,7 +212,9 @@ static const struct spi_device_id ksz_spi_ids[] = {
{ "ksz8794" },
{ "ksz8795" },
{ "ksz8863" },
+ { "ksz8864" },
{ "ksz8873" },
+ { "ksz8895" },
{ "ksz9477" },
{ "ksz9896" },
{ "ksz9897" },
diff --git a/include/linux/platform_data/microchip-ksz.h b/include/linux/platform_data/microchip-ksz.h
index 8c659db4da6b..d074019474f5 100644
--- a/include/linux/platform_data/microchip-ksz.h
+++ b/include/linux/platform_data/microchip-ksz.h
@@ -28,6 +28,8 @@ enum ksz_chip_id {
KSZ8794_CHIP_ID = 0x8794,
KSZ8765_CHIP_ID = 0x8765,
KSZ8830_CHIP_ID = 0x8830,
+ KSZ8864_CHIP_ID = 0x8864,
+ KSZ8895_CHIP_ID = 0x8895,
KSZ9477_CHIP_ID = 0x00947700,
KSZ9896_CHIP_ID = 0x00989600,
KSZ9897_CHIP_ID = 0x00989700,
--
2.34.1
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