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Message-Id: <20230823061935.415804-8-jiawenwu@trustnetic.com>
Date: Wed, 23 Aug 2023 14:19:34 +0800
From: Jiawen Wu <jiawenwu@...stnetic.com>
To: netdev@...r.kernel.org,
davem@...emloft.net,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com,
andrew@...n.ch,
hkallweit1@...il.com,
linux@...linux.org.uk,
Jose.Abreu@...opsys.com,
rmk+kernel@...linux.org.uk
Cc: mengyuanlou@...-swift.com,
Jiawen Wu <jiawenwu@...stnetic.com>
Subject: [PATCH net-next v3 7/8] net: txgbe: support copper NIC with external PHY
Wangxun SP chip supports to connect with external PHY (marvell 88x3310),
which links to 10GBASE-T/1000BASE-T/100BASE-T. Add the identification of
media types from subsystem device IDs. For sp_media_copper, register mdio
bus for the external PHY.
Signed-off-by: Jiawen Wu <jiawenwu@...stnetic.com>
---
drivers/net/ethernet/wangxun/Kconfig | 1 +
drivers/net/ethernet/wangxun/libwx/wx_type.h | 26 +++
drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c | 13 +-
.../net/ethernet/wangxun/txgbe/txgbe_main.c | 53 +++++--
.../net/ethernet/wangxun/txgbe/txgbe_phy.c | 150 +++++++++++++++++-
5 files changed, 221 insertions(+), 22 deletions(-)
diff --git a/drivers/net/ethernet/wangxun/Kconfig b/drivers/net/ethernet/wangxun/Kconfig
index 39596cd13539..23cd610bd376 100644
--- a/drivers/net/ethernet/wangxun/Kconfig
+++ b/drivers/net/ethernet/wangxun/Kconfig
@@ -41,6 +41,7 @@ config TXGBE
tristate "Wangxun(R) 10GbE PCI Express adapters support"
depends on PCI
depends on COMMON_CLK
+ select MARVELL_10G_PHY
select REGMAP
select I2C
select I2C_DESIGNWARE_PLATFORM
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h
index 50b92cfb46a0..c5cbd177ef62 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -233,6 +233,24 @@
#define WX_MAC_WDG_TIMEOUT 0x1100C
#define WX_MAC_RX_FLOW_CTRL 0x11090
#define WX_MAC_RX_FLOW_CTRL_RFE BIT(0) /* receive fc enable */
+/* MDIO Registers */
+#define WX_MSCA 0x11200
+#define WX_MSCA_RA(v) FIELD_PREP(U16_MAX, v)
+#define WX_MSCA_PA(v) FIELD_PREP(GENMASK(20, 16), v)
+#define WX_MSCA_DA(v) FIELD_PREP(GENMASK(25, 21), v)
+#define WX_MSCC 0x11204
+#define WX_MSCC_CMD(v) FIELD_PREP(GENMASK(17, 16), v)
+
+enum WX_MSCA_CMD_value {
+ WX_MSCA_CMD_RSV = 0,
+ WX_MSCA_CMD_WRITE,
+ WX_MSCA_CMD_POST_READ,
+ WX_MSCA_CMD_READ,
+};
+
+#define WX_MSCC_SADDR BIT(18)
+#define WX_MSCC_BUSY BIT(22)
+#define WX_MDIO_CLK(v) FIELD_PREP(GENMASK(21, 19), v)
#define WX_MMC_CONTROL 0x11800
#define WX_MMC_CONTROL_RSTONRD BIT(2) /* reset on read */
@@ -582,6 +600,13 @@ enum wx_mac_type {
wx_mac_em
};
+enum sp_media_type {
+ sp_media_unknown = 0,
+ sp_media_fiber,
+ sp_media_copper,
+ sp_media_backplane
+};
+
enum em_mac_type {
em_mac_type_unknown = 0,
em_mac_type_mdi,
@@ -829,6 +854,7 @@ struct wx {
struct wx_bus_info bus;
struct wx_mac_info mac;
enum em_mac_type mac_type;
+ enum sp_media_type media_type;
struct wx_eeprom_info eeprom;
struct wx_addr_filter_info addr_ctrl;
struct wx_mac_addr *mac_table;
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c
index 90168aab11ae..372745250270 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_hw.c
@@ -285,17 +285,20 @@ static void txgbe_reset_misc(struct wx *wx)
int txgbe_reset_hw(struct wx *wx)
{
int status;
- u32 val;
/* Call adapter stop to disable tx/rx and clear interrupts */
status = wx_stop_adapter(wx);
if (status != 0)
return status;
- val = WX_MIS_RST_LAN_RST(wx->bus.func);
- wr32(wx, WX_MIS_RST, val | rd32(wx, WX_MIS_RST));
- WX_WRITE_FLUSH(wx);
- usleep_range(10, 100);
+ if (wx->media_type != sp_media_copper) {
+ u32 val;
+
+ val = WX_MIS_RST_LAN_RST(wx->bus.func);
+ wr32(wx, WX_MIS_RST, val | rd32(wx, WX_MIS_RST));
+ WX_WRITE_FLUSH(wx);
+ usleep_range(10, 100);
+ }
status = wx_check_flash_load(wx, TXGBE_SPI_ILDR_STATUS_LAN_SW_RST(wx->bus.func));
if (status != 0)
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
index 641b8188da4e..5c3aed516ac2 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
@@ -300,6 +300,49 @@ static void txgbe_down(struct wx *wx)
wx_clean_all_rx_rings(wx);
}
+/**
+ * txgbe_init_type_code - Initialize the shared code
+ * @wx: pointer to hardware structure
+ **/
+static void txgbe_init_type_code(struct wx *wx)
+{
+ u8 device_type = wx->subsystem_device_id & 0xF0;
+
+ switch (wx->device_id) {
+ case TXGBE_DEV_ID_SP1000:
+ case TXGBE_DEV_ID_WX1820:
+ wx->mac.type = wx_mac_sp;
+ break;
+ default:
+ wx->mac.type = wx_mac_unknown;
+ break;
+ }
+
+ switch (device_type) {
+ case TXGBE_ID_SFP:
+ wx->media_type = sp_media_fiber;
+ break;
+ case TXGBE_ID_XAUI:
+ case TXGBE_ID_SGMII:
+ wx->media_type = sp_media_copper;
+ break;
+ case TXGBE_ID_KR_KX_KX4:
+ case TXGBE_ID_MAC_XAUI:
+ case TXGBE_ID_MAC_SGMII:
+ wx->media_type = sp_media_backplane;
+ break;
+ case TXGBE_ID_SFI_XAUI:
+ if (wx->bus.func == 0)
+ wx->media_type = sp_media_fiber;
+ else
+ wx->media_type = sp_media_copper;
+ break;
+ default:
+ wx->media_type = sp_media_unknown;
+ break;
+ }
+}
+
/**
* txgbe_sw_init - Initialize general software structures (struct wx)
* @wx: board private structure to initialize
@@ -324,15 +367,7 @@ static int txgbe_sw_init(struct wx *wx)
return err;
}
- switch (wx->device_id) {
- case TXGBE_DEV_ID_SP1000:
- case TXGBE_DEV_ID_WX1820:
- wx->mac.type = wx_mac_sp;
- break;
- default:
- wx->mac.type = wx_mac_unknown;
- break;
- }
+ txgbe_init_type_code(wx);
/* Set common capability flags and settings */
wx->max_q_vectors = TXGBE_MAX_MSIX_VECTORS;
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
index d2124547394d..4159c84035fd 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
@@ -161,7 +161,10 @@ static struct phylink_pcs *txgbe_phylink_mac_select(struct phylink_config *confi
{
struct txgbe *txgbe = netdev_to_txgbe(to_net_dev(config->dev));
- return &txgbe->xpcs->pcs;
+ if (interface == PHY_INTERFACE_MODE_10GBASER)
+ return &txgbe->xpcs->pcs;
+
+ return NULL;
}
static void txgbe_mac_config(struct phylink_config *config, unsigned int mode,
@@ -244,8 +247,8 @@ static const struct phylink_mac_ops txgbe_mac_ops = {
static int txgbe_phylink_init(struct txgbe *txgbe)
{
+ struct fwnode_handle *fwnode = NULL;
struct phylink_config *config;
- struct fwnode_handle *fwnode;
struct wx *wx = txgbe->wx;
phy_interface_t phy_mode;
struct phylink *phylink;
@@ -256,16 +259,34 @@ static int txgbe_phylink_init(struct txgbe *txgbe)
config->dev = &wx->netdev->dev;
config->type = PHYLINK_NETDEV;
- config->mac_capabilities = MAC_10000FD | MAC_1000FD | MAC_SYM_PAUSE | MAC_ASYM_PAUSE;
- phy_mode = PHY_INTERFACE_MODE_10GBASER;
- __set_bit(PHY_INTERFACE_MODE_10GBASER, config->supported_interfaces);
- __set_bit(PHY_INTERFACE_MODE_1000BASEX, config->supported_interfaces);
- __set_bit(PHY_INTERFACE_MODE_SGMII, config->supported_interfaces);
- fwnode = software_node_fwnode(txgbe->nodes.group[SWNODE_PHYLINK]);
+ config->mac_capabilities = MAC_10000FD | MAC_1000FD | MAC_100FD |
+ MAC_SYM_PAUSE | MAC_ASYM_PAUSE;
+
+ if (wx->media_type == sp_media_copper) {
+ phy_mode = PHY_INTERFACE_MODE_XAUI;
+ __set_bit(PHY_INTERFACE_MODE_XAUI, config->supported_interfaces);
+ } else {
+ phy_mode = PHY_INTERFACE_MODE_10GBASER;
+ fwnode = software_node_fwnode(txgbe->nodes.group[SWNODE_PHYLINK]);
+ __set_bit(PHY_INTERFACE_MODE_10GBASER, config->supported_interfaces);
+ __set_bit(PHY_INTERFACE_MODE_1000BASEX, config->supported_interfaces);
+ __set_bit(PHY_INTERFACE_MODE_SGMII, config->supported_interfaces);
+ }
+
phylink = phylink_create(config, fwnode, phy_mode, &txgbe_mac_ops);
if (IS_ERR(phylink))
return PTR_ERR(phylink);
+ if (wx->phydev) {
+ int ret;
+
+ ret = phylink_connect_phy(phylink, wx->phydev);
+ if (ret) {
+ phylink_destroy(phylink);
+ return ret;
+ }
+ }
+
txgbe->phylink = phylink;
return 0;
@@ -626,10 +647,117 @@ static int txgbe_sfp_register(struct txgbe *txgbe)
return 0;
}
+static int txgbe_phy_read(struct mii_bus *bus, int phy_addr,
+ int devnum, int regnum)
+{
+ struct wx *wx = bus->priv;
+ u32 val, command;
+ int ret;
+
+ /* setup and write the address cycle command */
+ command = WX_MSCA_RA(regnum) |
+ WX_MSCA_PA(phy_addr) |
+ WX_MSCA_DA(devnum);
+ wr32(wx, WX_MSCA, command);
+
+ command = WX_MSCC_CMD(WX_MSCA_CMD_READ) | WX_MSCC_BUSY;
+ wr32(wx, WX_MSCC, command);
+
+ /* wait to complete */
+ ret = read_poll_timeout(rd32, val, !(val & WX_MSCC_BUSY), 1000,
+ 100000, false, wx, WX_MSCC);
+ if (ret) {
+ wx_err(wx, "Mdio read c45 command did not complete.\n");
+ return ret;
+ }
+
+ return (u16)rd32(wx, WX_MSCC);
+}
+
+static int txgbe_phy_write(struct mii_bus *bus, int phy_addr,
+ int devnum, int regnum, u16 value)
+{
+ struct wx *wx = bus->priv;
+ int ret, command;
+ u16 val;
+
+ /* setup and write the address cycle command */
+ command = WX_MSCA_RA(regnum) |
+ WX_MSCA_PA(phy_addr) |
+ WX_MSCA_DA(devnum);
+ wr32(wx, WX_MSCA, command);
+
+ command = value | WX_MSCC_CMD(WX_MSCA_CMD_WRITE) | WX_MSCC_BUSY;
+ wr32(wx, WX_MSCC, command);
+
+ /* wait to complete */
+ ret = read_poll_timeout(rd32, val, !(val & WX_MSCC_BUSY), 1000,
+ 100000, false, wx, WX_MSCC);
+ if (ret)
+ wx_err(wx, "Mdio write c45 command did not complete.\n");
+
+ return ret;
+}
+
+static int txgbe_ext_phy_init(struct txgbe *txgbe)
+{
+ struct phy_device *phydev;
+ struct mii_bus *mii_bus;
+ struct pci_dev *pdev;
+ struct wx *wx;
+ int ret = 0;
+
+ wx = txgbe->wx;
+ pdev = wx->pdev;
+
+ mii_bus = devm_mdiobus_alloc(&pdev->dev);
+ if (!mii_bus)
+ return -ENOMEM;
+
+ mii_bus->name = "txgbe_mii_bus";
+ mii_bus->read_c45 = &txgbe_phy_read;
+ mii_bus->write_c45 = &txgbe_phy_write;
+ mii_bus->parent = &pdev->dev;
+ mii_bus->phy_mask = GENMASK(31, 1);
+ mii_bus->priv = wx;
+ snprintf(mii_bus->id, MII_BUS_ID_SIZE, "txgbe-%x",
+ (pdev->bus->number << 8) | pdev->devfn);
+
+ ret = devm_mdiobus_register(&pdev->dev, mii_bus);
+ if (ret) {
+ wx_err(wx, "failed to register MDIO bus: %d\n", ret);
+ return ret;
+ }
+
+ phydev = phy_find_first(mii_bus);
+ if (!phydev) {
+ wx_err(wx, "no PHY found\n");
+ return -ENODEV;
+ }
+
+ phy_attached_info(phydev);
+
+ wx->link = 0;
+ wx->speed = 0;
+ wx->duplex = 0;
+ wx->phydev = phydev;
+
+ ret = txgbe_phylink_init(txgbe);
+ if (ret) {
+ wx_err(wx, "failed to init phylink: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
int txgbe_init_phy(struct txgbe *txgbe)
{
int ret;
+ if (txgbe->wx->media_type == sp_media_copper)
+ return txgbe_ext_phy_init(txgbe);
+
ret = txgbe_swnodes_register(txgbe);
if (ret) {
wx_err(txgbe->wx, "failed to register software nodes\n");
@@ -691,6 +819,12 @@ int txgbe_init_phy(struct txgbe *txgbe)
void txgbe_remove_phy(struct txgbe *txgbe)
{
+ if (txgbe->wx->media_type == sp_media_copper) {
+ phylink_disconnect_phy(txgbe->phylink);
+ phylink_destroy(txgbe->phylink);
+ return;
+ }
+
platform_device_unregister(txgbe->sfp_dev);
platform_device_unregister(txgbe->i2c_dev);
clkdev_drop(txgbe->clock);
--
2.27.0
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