lkml.org 
[lkml]   [2022]   [May]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH net-next v10 2/2] net: ethernet: Add driver for Sunplus SP7021
Date
Add driver for Sunplus SP7021 SoC.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Wells Lu <wellslutw@gmail.com>
---
Changes in v10
- Addressed comments of Mr. Stephen Hemminger.
- Use define NAPI_POLL_WEIGHT.
- Return amount of processed packets in spl2sw_tx_poll() and spl2sw_rx_poll().
- Addressed comments of Mr. Francois Romien.
- Added spin locks for "read-modify-write of int-mask register".

MAINTAINERS | 1 +
drivers/net/ethernet/Kconfig | 1 +
drivers/net/ethernet/Makefile | 1 +
drivers/net/ethernet/sunplus/Kconfig | 35 ++
drivers/net/ethernet/sunplus/Makefile | 6 +
drivers/net/ethernet/sunplus/spl2sw_define.h | 270 ++++++++
drivers/net/ethernet/sunplus/spl2sw_desc.c | 228 +++++++
drivers/net/ethernet/sunplus/spl2sw_desc.h | 19 +
drivers/net/ethernet/sunplus/spl2sw_driver.c | 578 ++++++++++++++++++
drivers/net/ethernet/sunplus/spl2sw_int.c | 273 +++++++++
drivers/net/ethernet/sunplus/spl2sw_int.h | 13 +
drivers/net/ethernet/sunplus/spl2sw_mac.c | 274 +++++++++
drivers/net/ethernet/sunplus/spl2sw_mac.h | 18 +
drivers/net/ethernet/sunplus/spl2sw_mdio.c | 126 ++++
drivers/net/ethernet/sunplus/spl2sw_mdio.h | 12 +
drivers/net/ethernet/sunplus/spl2sw_phy.c | 92 +++
drivers/net/ethernet/sunplus/spl2sw_phy.h | 12 +
.../net/ethernet/sunplus/spl2sw_register.h | 86 +++
18 files changed, 2045 insertions(+)
create mode 100644 drivers/net/ethernet/sunplus/Kconfig
create mode 100644 drivers/net/ethernet/sunplus/Makefile
create mode 100644 drivers/net/ethernet/sunplus/spl2sw_define.h
create mode 100644 drivers/net/ethernet/sunplus/spl2sw_desc.c
create mode 100644 drivers/net/ethernet/sunplus/spl2sw_desc.h
create mode 100644 drivers/net/ethernet/sunplus/spl2sw_driver.c
create mode 100644 drivers/net/ethernet/sunplus/spl2sw_int.c
create mode 100644 drivers/net/ethernet/sunplus/spl2sw_int.h
create mode 100644 drivers/net/ethernet/sunplus/spl2sw_mac.c
create mode 100644 drivers/net/ethernet/sunplus/spl2sw_mac.h
create mode 100644 drivers/net/ethernet/sunplus/spl2sw_mdio.c
create mode 100644 drivers/net/ethernet/sunplus/spl2sw_mdio.h
create mode 100644 drivers/net/ethernet/sunplus/spl2sw_phy.c
create mode 100644 drivers/net/ethernet/sunplus/spl2sw_phy.h
create mode 100644 drivers/net/ethernet/sunplus/spl2sw_register.h

diff --git a/MAINTAINERS b/MAINTAINERS
index 22a2f9699..11a062c42 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18890,6 +18890,7 @@ L: netdev@vger.kernel.org
S: Maintained
W: https://sunplus.atlassian.net/wiki/spaces/doc/overview
F: Documentation/devicetree/bindings/net/sunplus,sp7021-emac.yaml
+F: drivers/net/ethernet/sunplus/

SUNPLUS OCOTP DRIVER
M: Vincent Shih <vincent.sunplus@gmail.com>
diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig
index 827993022..955abbc54 100644
--- a/drivers/net/ethernet/Kconfig
+++ b/drivers/net/ethernet/Kconfig
@@ -179,6 +179,7 @@ source "drivers/net/ethernet/smsc/Kconfig"
source "drivers/net/ethernet/socionext/Kconfig"
source "drivers/net/ethernet/stmicro/Kconfig"
source "drivers/net/ethernet/sun/Kconfig"
+source "drivers/net/ethernet/sunplus/Kconfig"
source "drivers/net/ethernet/synopsys/Kconfig"
source "drivers/net/ethernet/tehuti/Kconfig"
source "drivers/net/ethernet/ti/Kconfig"
diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile
index 8ef43e0c3..9eb011699 100644
--- a/drivers/net/ethernet/Makefile
+++ b/drivers/net/ethernet/Makefile
@@ -90,6 +90,7 @@ obj-$(CONFIG_NET_VENDOR_SMSC) += smsc/
obj-$(CONFIG_NET_VENDOR_SOCIONEXT) += socionext/
obj-$(CONFIG_NET_VENDOR_STMICRO) += stmicro/
obj-$(CONFIG_NET_VENDOR_SUN) += sun/
+obj-$(CONFIG_NET_VENDOR_SUNPLUS) += sunplus/
obj-$(CONFIG_NET_VENDOR_TEHUTI) += tehuti/
obj-$(CONFIG_NET_VENDOR_TI) += ti/
obj-$(CONFIG_NET_VENDOR_TOSHIBA) += toshiba/
diff --git a/drivers/net/ethernet/sunplus/Kconfig b/drivers/net/ethernet/sunplus/Kconfig
new file mode 100644
index 000000000..d0144a2ab
--- /dev/null
+++ b/drivers/net/ethernet/sunplus/Kconfig
@@ -0,0 +1,35 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Sunplus network device configuration
+#
+
+config NET_VENDOR_SUNPLUS
+ bool "Sunplus devices"
+ default y
+ depends on ARCH_SUNPLUS || COMPILE_TEST
+ help
+ If you have a network (Ethernet) card belonging to this
+ class, say Y here.
+
+ Note that the answer to this question doesn't directly
+ affect the kernel: saying N will just cause the configurator
+ to skip all the questions about Sunplus cards. If you say Y,
+ you will be asked for your specific card in the following
+ questions.
+
+if NET_VENDOR_SUNPLUS
+
+config SP7021_EMAC
+ tristate "Sunplus Dual 10M/100M Ethernet devices"
+ depends on SOC_SP7021 || COMPILE_TEST
+ select PHYLIB
+ select COMMON_CLK_SP7021
+ select RESET_SUNPLUS
+ select NVMEM_SUNPLUS_OCOTP
+ help
+ If you have Sunplus dual 10M/100M Ethernet devices, say Y.
+ The network device creates two net-device interfaces.
+ To compile this driver as a module, choose M here. The
+ module will be called sp7021_emac.
+
+endif # NET_VENDOR_SUNPLUS
diff --git a/drivers/net/ethernet/sunplus/Makefile b/drivers/net/ethernet/sunplus/Makefile
new file mode 100644
index 000000000..ef7d7d0a7
--- /dev/null
+++ b/drivers/net/ethernet/sunplus/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the Sunplus network device drivers.
+#
+obj-$(CONFIG_SP7021_EMAC) += sp7021_emac.o
+sp7021_emac-objs := spl2sw_driver.o spl2sw_int.o spl2sw_desc.o spl2sw_mac.o spl2sw_mdio.o spl2sw_phy.o
diff --git a/drivers/net/ethernet/sunplus/spl2sw_define.h b/drivers/net/ethernet/sunplus/spl2sw_define.h
new file mode 100644
index 000000000..acc6c1228
--- /dev/null
+++ b/drivers/net/ethernet/sunplus/spl2sw_define.h
@@ -0,0 +1,270 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright Sunplus Technology Co., Ltd.
+ * All rights reserved.
+ */
+
+#ifndef __SPL2SW_DEFINE_H__
+#define __SPL2SW_DEFINE_H__
+
+#define MAX_NETDEV_NUM 2 /* Maximum # of net-device */
+
+/* Interrupt status */
+#define MAC_INT_DAISY_MODE_CHG BIT(31) /* Daisy Mode Change */
+#define MAC_INT_IP_CHKSUM_ERR BIT(23) /* IP Checksum Append Error */
+#define MAC_INT_WDOG_TIMER1_EXP BIT(22) /* Watchdog Timer1 Expired */
+#define MAC_INT_WDOG_TIMER0_EXP BIT(21) /* Watchdog Timer0 Expired */
+#define MAC_INT_INTRUDER_ALERT BIT(20) /* Atruder Alert */
+#define MAC_INT_PORT_ST_CHG BIT(19) /* Port Status Change */
+#define MAC_INT_BC_STORM BIT(18) /* Broad Cast Storm */
+#define MAC_INT_MUST_DROP_LAN BIT(17) /* Global Queue Exhausted */
+#define MAC_INT_GLOBAL_QUE_FULL BIT(16) /* Global Queue Full */
+#define MAC_INT_TX_SOC_PAUSE_ON BIT(15) /* Soc Port TX Pause On */
+#define MAC_INT_RX_SOC_QUE_FULL BIT(14) /* Soc Port Out Queue Full */
+#define MAC_INT_TX_LAN1_QUE_FULL BIT(9) /* Port 1 Out Queue Full */
+#define MAC_INT_TX_LAN0_QUE_FULL BIT(8) /* Port 0 Out Queue Full */
+#define MAC_INT_RX_L_DESCF BIT(7) /* Low Priority Descriptor Full */
+#define MAC_INT_RX_H_DESCF BIT(6) /* High Priority Descriptor Full */
+#define MAC_INT_RX_DONE_L BIT(5) /* RX Low Priority Done */
+#define MAC_INT_RX_DONE_H BIT(4) /* RX High Priority Done */
+#define MAC_INT_TX_DONE_L BIT(3) /* TX Low Priority Done */
+#define MAC_INT_TX_DONE_H BIT(2) /* TX High Priority Done */
+#define MAC_INT_TX_DES_ERR BIT(1) /* TX Descriptor Error */
+#define MAC_INT_RX_DES_ERR BIT(0) /* Rx Descriptor Error */
+
+#define MAC_INT_RX (MAC_INT_RX_DONE_H | MAC_INT_RX_DONE_L | \
+ MAC_INT_RX_DES_ERR)
+#define MAC_INT_TX (MAC_INT_TX_DONE_L | MAC_INT_TX_DONE_H | \
+ MAC_INT_TX_DES_ERR)
+#define MAC_INT_MASK_DEF (MAC_INT_DAISY_MODE_CHG | MAC_INT_IP_CHKSUM_ERR | \
+ MAC_INT_WDOG_TIMER1_EXP | MAC_INT_WDOG_TIMER0_EXP | \
+ MAC_INT_INTRUDER_ALERT | MAC_INT_PORT_ST_CHG | \
+ MAC_INT_BC_STORM | MAC_INT_MUST_DROP_LAN | \
+ MAC_INT_GLOBAL_QUE_FULL | MAC_INT_TX_SOC_PAUSE_ON | \
+ MAC_INT_RX_SOC_QUE_FULL | MAC_INT_TX_LAN1_QUE_FULL | \
+ MAC_INT_TX_LAN0_QUE_FULL | MAC_INT_RX_L_DESCF | \
+ MAC_INT_RX_H_DESCF)
+
+/* Address table search */
+#define MAC_ADDR_LOOKUP_IDLE BIT(2)
+#define MAC_SEARCH_NEXT_ADDR BIT(1)
+#define MAC_BEGIN_SEARCH_ADDR BIT(0)
+
+/* Address table status */
+#define MAC_HASH_LOOKUP_ADDR GENMASK(31, 22)
+#define MAC_R_PORT_MAP GENMASK(13, 12)
+#define MAC_R_CPU_PORT GENMASK(11, 10)
+#define MAC_R_VID GENMASK(9, 7)
+#define MAC_R_AGE GENMASK(6, 4)
+#define MAC_R_PROXY BIT(3)
+#define MAC_R_MC_INGRESS BIT(2)
+#define MAC_AT_TABLE_END BIT(1)
+#define MAC_AT_DATA_READY BIT(0)
+
+/* Wt mac ad0 */
+#define MAC_W_PORT_MAP GENMASK(13, 12)
+#define MAC_W_LAN_PORT_1 BIT(13)
+#define MAC_W_LAN_PORT_0 BIT(12)
+#define MAC_W_CPU_PORT GENMASK(11, 10)
+#define MAC_W_CPU_PORT_1 BIT(11)
+#define MAC_W_CPU_PORT_0 BIT(10)
+#define MAC_W_VID GENMASK(9, 7)
+#define MAC_W_AGE GENMASK(6, 4)
+#define MAC_W_PROXY BIT(3)
+#define MAC_W_MC_INGRESS BIT(2)
+#define MAC_W_MAC_DONE BIT(1)
+#define MAC_W_MAC_CMD BIT(0)
+
+/* W mac 15_0 bus */
+#define MAC_W_MAC_15_0 GENMASK(15, 0)
+
+/* W mac 47_16 bus */
+#define MAC_W_MAC_47_16 GENMASK(31, 0)
+
+/* PVID config 0 */
+#define MAC_P1_PVID GENMASK(6, 4)
+#define MAC_P0_PVID GENMASK(2, 0)
+
+/* VLAN member config 0 */
+#define MAC_VLAN_MEMSET_3 GENMASK(27, 24)
+#define MAC_VLAN_MEMSET_2 GENMASK(19, 16)
+#define MAC_VLAN_MEMSET_1 GENMASK(11, 8)
+#define MAC_VLAN_MEMSET_0 GENMASK(3, 0)
+
+/* VLAN member config 1 */
+#define MAC_VLAN_MEMSET_5 GENMASK(11, 8)
+#define MAC_VLAN_MEMSET_4 GENMASK(3, 0)
+
+/* Port ability */
+#define MAC_PORT_ABILITY_LINK_ST GENMASK(25, 24)
+
+/* CPU control */
+#define MAC_EN_SOC1_AGING BIT(15)
+#define MAC_EN_SOC0_AGING BIT(14)
+#define MAC_DIS_LRN_SOC1 BIT(13)
+#define MAC_DIS_LRN_SOC0 BIT(12)
+#define MAC_EN_CRC_SOC1 BIT(9)
+#define MAC_EN_CRC_SOC0 BIT(8)
+#define MAC_DIS_SOC1_CPU BIT(7)
+#define MAC_DIS_SOC0_CPU BIT(6)
+#define MAC_DIS_BC2CPU_P1 BIT(5)
+#define MAC_DIS_BC2CPU_P0 BIT(4)
+#define MAC_DIS_MC2CPU GENMASK(3, 2)
+#define MAC_DIS_MC2CPU_P1 BIT(3)
+#define MAC_DIS_MC2CPU_P0 BIT(2)
+#define MAC_DIS_UN2CPU GENMASK(1, 0)
+
+/* Port control 0 */
+#define MAC_DIS_PORT GENMASK(25, 24)
+#define MAC_DIS_PORT1 BIT(25)
+#define MAC_DIS_PORT0 BIT(24)
+#define MAC_DIS_RMC2CPU_P1 BIT(17)
+#define MAC_DIS_RMC2CPU_P0 BIT(16)
+#define MAC_EN_FLOW_CTL_P1 BIT(9)
+#define MAC_EN_FLOW_CTL_P0 BIT(8)
+#define MAC_EN_BACK_PRESS_P1 BIT(1)
+#define MAC_EN_BACK_PRESS_P0 BIT(0)
+
+/* Port control 1 */
+#define MAC_DIS_SA_LRN_P1 BIT(9)
+#define MAC_DIS_SA_LRN_P0 BIT(8)
+
+/* Port control 2 */
+#define MAC_EN_AGING_P1 BIT(9)
+#define MAC_EN_AGING_P0 BIT(8)
+
+/* Switch Global control */
+#define MAC_RMC_TB_FAULT_RULE GENMASK(26, 25)
+#define MAC_LED_FLASH_TIME GENMASK(24, 23)
+#define MAC_BC_STORM_PREV GENMASK(5, 4)
+
+/* LED port 0 */
+#define MAC_LED_ACT_HI BIT(28)
+
+/* PHY control register 0 */
+#define MAC_CPU_PHY_WT_DATA GENMASK(31, 16)
+#define MAC_CPU_PHY_CMD GENMASK(14, 13)
+#define MAC_CPU_PHY_REG_ADDR GENMASK(12, 8)
+#define MAC_CPU_PHY_ADDR GENMASK(4, 0)
+
+/* PHY control register 1 */
+#define MAC_CPU_PHY_RD_DATA GENMASK(31, 16)
+#define MAC_PHY_RD_RDY BIT(1)
+#define MAC_PHY_WT_DONE BIT(0)
+
+/* MAC force mode */
+#define MAC_EXT_PHY1_ADDR GENMASK(28, 24)
+#define MAC_EXT_PHY0_ADDR GENMASK(20, 16)
+#define MAC_FORCE_RMII_LINK GENMASK(9, 8)
+#define MAC_FORCE_RMII_EN_1 BIT(7)
+#define MAC_FORCE_RMII_EN_0 BIT(6)
+#define MAC_FORCE_RMII_FC GENMASK(5, 4)
+#define MAC_FORCE_RMII_DPX GENMASK(3, 2)
+#define MAC_FORCE_RMII_SPD GENMASK(1, 0)
+
+/* CPU transmit trigger */
+#define MAC_TRIG_L_SOC0 BIT(1)
+#define MAC_TRIG_H_SOC0 BIT(0)
+
+/* Config descriptor queue */
+#define TX_DESC_NUM 16 /* # of descriptors in TX queue */
+#define MAC_GUARD_DESC_NUM 2 /* # of descriptors of gap 0 */
+#define RX_QUEUE0_DESC_NUM 16 /* # of descriptors in RX queue 0 */
+#define RX_QUEUE1_DESC_NUM 16 /* # of descriptors in RX queue 1 */
+#define TX_DESC_QUEUE_NUM 1 /* # of TX queue */
+#define RX_DESC_QUEUE_NUM 2 /* # of RX queue */
+
+#define MAC_RX_LEN_MAX 2047 /* Size of RX buffer */
+
+/* Tx descriptor */
+/* cmd1 */
+#define TXD_OWN BIT(31)
+#define TXD_ERR_CODE GENMASK(29, 26)
+#define TXD_SOP BIT(25) /* start of a packet */
+#define TXD_EOP BIT(24) /* end of a packet */
+#define TXD_VLAN GENMASK(17, 12)
+#define TXD_PKT_LEN GENMASK(10, 0) /* packet length */
+/* cmd2 */
+#define TXD_EOR BIT(31) /* end of ring */
+#define TXD_BUF_LEN2 GENMASK(22, 12)
+#define TXD_BUF_LEN1 GENMASK(10, 0)
+
+/* Rx descriptor */
+/* cmd1 */
+#define RXD_OWN BIT(31)
+#define RXD_ERR_CODE GENMASK(29, 26)
+#define RXD_TCP_UDP_CHKSUM BIT(23)
+#define RXD_PROXY BIT(22)
+#define RXD_PROTOCOL GENMASK(21, 20)
+#define RXD_VLAN_TAG BIT(19)
+#define RXD_IP_CHKSUM BIT(18)
+#define RXD_ROUTE_TYPE GENMASK(17, 16)
+#define RXD_PKT_SP GENMASK(14, 12) /* packet source port */
+#define RXD_PKT_LEN GENMASK(10, 0) /* packet length */
+/* cmd2 */
+#define RXD_EOR BIT(31) /* end of ring */
+#define RXD_BUF_LEN2 GENMASK(22, 12)
+#define RXD_BUF_LEN1 GENMASK(10, 0)
+
+/* structure of descriptor */
+struct spl2sw_mac_desc {
+ u32 cmd1;
+ u32 cmd2;
+ u32 addr1;
+ u32 addr2;
+};
+
+struct spl2sw_skb_info {
+ struct sk_buff *skb;
+ u32 mapping;
+ u32 len;
+};
+
+struct spl2sw_common {
+ void __iomem *l2sw_reg_base;
+
+ struct platform_device *pdev;
+ struct reset_control *rstc;
+ struct clk *clk;
+
+ void *desc_base;
+ dma_addr_t desc_dma;
+ s32 desc_size;
+ struct spl2sw_mac_desc *rx_desc[RX_DESC_QUEUE_NUM];
+ struct spl2sw_skb_info *rx_skb_info[RX_DESC_QUEUE_NUM];
+ u32 rx_pos[RX_DESC_QUEUE_NUM];
+ u32 rx_desc_num[RX_DESC_QUEUE_NUM];
+ u32 rx_desc_buff_size;
+
+ struct spl2sw_mac_desc *tx_desc;
+ struct spl2sw_skb_info tx_temp_skb_info[TX_DESC_NUM];
+ u32 tx_done_pos;
+ u32 tx_pos;
+ u32 tx_desc_full;
+
+ struct net_device *ndev[MAX_NETDEV_NUM];
+ struct mii_bus *mii_bus;
+
+ struct napi_struct rx_napi;
+ struct napi_struct tx_napi;
+
+ spinlock_t tx_lock; /* spinlock for accessing tx buffer */
+ spinlock_t mdio_lock; /* spinlock for mdio commands */
+ spinlock_t int_mask_lock; /* spinlock for accessing int mask reg. */
+
+ u8 enable;
+};
+
+struct spl2sw_mac {
+ struct net_device *ndev;
+ struct spl2sw_common *comm;
+
+ u8 mac_addr[ETH_ALEN];
+ phy_interface_t phy_mode;
+ struct device_node *phy_node;
+
+ u8 lan_port;
+ u8 to_vlan;
+ u8 vlan_id;
+};
+
+#endif
diff --git a/drivers/net/ethernet/sunplus/spl2sw_desc.c b/drivers/net/ethernet/sunplus/spl2sw_desc.c
new file mode 100644
index 000000000..3f0d9f78b
--- /dev/null
+++ b/drivers/net/ethernet/sunplus/spl2sw_desc.c
@@ -0,0 +1,228 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright Sunplus Technology Co., Ltd.
+ * All rights reserved.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/netdevice.h>
+#include <linux/of_mdio.h>
+
+#include "spl2sw_define.h"
+#include "spl2sw_desc.h"
+
+void spl2sw_rx_descs_flush(struct spl2sw_common *comm)
+{
+ struct spl2sw_skb_info *rx_skbinfo;
+ struct spl2sw_mac_desc *rx_desc;
+ u32 i, j;
+
+ for (i = 0; i < RX_DESC_QUEUE_NUM; i++) {
+ rx_desc = comm->rx_desc[i];
+ rx_skbinfo = comm->rx_skb_info[i];
+ for (j = 0; j < comm->rx_desc_num[i]; j++) {
+ rx_desc[j].addr1 = rx_skbinfo[j].mapping;
+ rx_desc[j].cmd2 = (j == comm->rx_desc_num[i] - 1) ?
+ RXD_EOR | comm->rx_desc_buff_size :
+ comm->rx_desc_buff_size;
+ wmb(); /* Set RXD_OWN after other fields are ready. */
+ rx_desc[j].cmd1 = RXD_OWN;
+ }
+ }
+}
+
+void spl2sw_tx_descs_clean(struct spl2sw_common *comm)
+{
+ u32 i;
+
+ if (!comm->tx_desc)
+ return;
+
+ for (i = 0; i < TX_DESC_NUM; i++) {
+ comm->tx_desc[i].cmd1 = 0;
+ wmb(); /* Clear TXD_OWN and then set other fields. */
+ comm->tx_desc[i].cmd2 = 0;
+ comm->tx_desc[i].addr1 = 0;
+ comm->tx_desc[i].addr2 = 0;
+
+ if (comm->tx_temp_skb_info[i].mapping) {
+ dma_unmap_single(&comm->pdev->dev, comm->tx_temp_skb_info[i].mapping,
+ comm->tx_temp_skb_info[i].skb->len, DMA_TO_DEVICE);
+ comm->tx_temp_skb_info[i].mapping = 0;
+ }
+
+ if (comm->tx_temp_skb_info[i].skb) {
+ dev_kfree_skb_any(comm->tx_temp_skb_info[i].skb);
+ comm->tx_temp_skb_info[i].skb = NULL;
+ }
+ }
+}
+
+void spl2sw_rx_descs_clean(struct spl2sw_common *comm)
+{
+ struct spl2sw_skb_info *rx_skbinfo;
+ struct spl2sw_mac_desc *rx_desc;
+ u32 i, j;
+
+ for (i = 0; i < RX_DESC_QUEUE_NUM; i++) {
+ if (!comm->rx_skb_info[i])
+ continue;
+
+ rx_desc = comm->rx_desc[i];
+ rx_skbinfo = comm->rx_skb_info[i];
+ for (j = 0; j < comm->rx_desc_num[i]; j++) {
+ rx_desc[j].cmd1 = 0;
+ wmb(); /* Clear RXD_OWN and then set other fields. */
+ rx_desc[j].cmd2 = 0;
+ rx_desc[j].addr1 = 0;
+
+ if (rx_skbinfo[j].skb) {
+ dma_unmap_single(&comm->pdev->dev, rx_skbinfo[j].mapping,
+ comm->rx_desc_buff_size, DMA_FROM_DEVICE);
+ dev_kfree_skb_any(rx_skbinfo[j].skb);
+ rx_skbinfo[j].skb = NULL;
+ rx_skbinfo[j].mapping = 0;
+ }
+ }
+
+ kfree(rx_skbinfo);
+ comm->rx_skb_info[i] = NULL;
+ }
+}
+
+void spl2sw_descs_clean(struct spl2sw_common *comm)
+{
+ spl2sw_rx_descs_clean(comm);
+ spl2sw_tx_descs_clean(comm);
+}
+
+void spl2sw_descs_free(struct spl2sw_common *comm)
+{
+ u32 i;
+
+ spl2sw_descs_clean(comm);
+ comm->tx_desc = NULL;
+ for (i = 0; i < RX_DESC_QUEUE_NUM; i++)
+ comm->rx_desc[i] = NULL;
+
+ /* Free descriptor area */
+ if (comm->desc_base) {
+ dma_free_coherent(&comm->pdev->dev, comm->desc_size, comm->desc_base,
+ comm->desc_dma);
+ comm->desc_base = NULL;
+ comm->desc_dma = 0;
+ comm->desc_size = 0;
+ }
+}
+
+void spl2sw_tx_descs_init(struct spl2sw_common *comm)
+{
+ memset(comm->tx_desc, '\0', sizeof(struct spl2sw_mac_desc) *
+ (TX_DESC_NUM + MAC_GUARD_DESC_NUM));
+}
+
+int spl2sw_rx_descs_init(struct spl2sw_common *comm)
+{
+ struct spl2sw_skb_info *rx_skbinfo;
+ struct spl2sw_mac_desc *rx_desc;
+ struct sk_buff *skb;
+ u32 mapping;
+ u32 i, j;
+
+ for (i = 0; i < RX_DESC_QUEUE_NUM; i++) {
+ comm->rx_skb_info[i] = kcalloc(comm->rx_desc_num[i], sizeof(*rx_skbinfo),
+ GFP_KERNEL | GFP_DMA);
+ if (!comm->rx_skb_info[i])
+ goto mem_alloc_fail;
+
+ rx_skbinfo = comm->rx_skb_info[i];
+ rx_desc = comm->rx_desc[i];
+ for (j = 0; j < comm->rx_desc_num[i]; j++) {
+ skb = netdev_alloc_skb(NULL, comm->rx_desc_buff_size);
+ if (!skb)
+ goto mem_alloc_fail;
+
+ rx_skbinfo[j].skb = skb;
+ mapping = dma_map_single(&comm->pdev->dev, skb->data,
+ comm->rx_desc_buff_size,
+ DMA_FROM_DEVICE);
+ if (dma_mapping_error(&comm->pdev->dev, mapping))
+ goto mem_alloc_fail;
+
+ rx_skbinfo[j].mapping = mapping;
+ rx_desc[j].addr1 = mapping;
+ rx_desc[j].addr2 = 0;
+ rx_desc[j].cmd2 = (j == comm->rx_desc_num[i] - 1) ?
+ RXD_EOR | comm->rx_desc_buff_size :
+ comm->rx_desc_buff_size;
+ wmb(); /* Set RXD_OWN after other fields are effective. */
+ rx_desc[j].cmd1 = RXD_OWN;
+ }
+ }
+
+ return 0;
+
+mem_alloc_fail:
+ spl2sw_rx_descs_clean(comm);
+ return -ENOMEM;
+}
+
+int spl2sw_descs_alloc(struct spl2sw_common *comm)
+{
+ s32 desc_size;
+ u32 i;
+
+ /* Alloc descriptor area */
+ desc_size = (TX_DESC_NUM + MAC_GUARD_DESC_NUM) * sizeof(struct spl2sw_mac_desc);
+ for (i = 0; i < RX_DESC_QUEUE_NUM; i++)
+ desc_size += comm->rx_desc_num[i] * sizeof(struct spl2sw_mac_desc);
+
+ comm->desc_base = dma_alloc_coherent(&comm->pdev->dev, desc_size, &comm->desc_dma,
+ GFP_KERNEL);
+ if (!comm->desc_base)
+ return -ENOMEM;
+
+ comm->desc_size = desc_size;
+
+ /* Setup Tx descriptor */
+ comm->tx_desc = comm->desc_base;
+
+ /* Setup Rx descriptor */
+ comm->rx_desc[0] = &comm->tx_desc[TX_DESC_NUM + MAC_GUARD_DESC_NUM];
+ for (i = 1; i < RX_DESC_QUEUE_NUM; i++)
+ comm->rx_desc[i] = comm->rx_desc[i - 1] + comm->rx_desc_num[i - 1];
+
+ return 0;
+}
+
+int spl2sw_descs_init(struct spl2sw_common *comm)
+{
+ u32 i, ret;
+
+ /* Initialize rx descriptor's data */
+ comm->rx_desc_num[0] = RX_QUEUE0_DESC_NUM;
+ comm->rx_desc_num[1] = RX_QUEUE1_DESC_NUM;
+
+ for (i = 0; i < RX_DESC_QUEUE_NUM; i++) {
+ comm->rx_desc[i] = NULL;
+ comm->rx_skb_info[i] = NULL;
+ comm->rx_pos[i] = 0;
+ }
+ comm->rx_desc_buff_size = MAC_RX_LEN_MAX;
+
+ /* Initialize tx descriptor's data */
+ comm->tx_done_pos = 0;
+ comm->tx_desc = NULL;
+ comm->tx_pos = 0;
+ comm->tx_desc_full = 0;
+ for (i = 0; i < TX_DESC_NUM; i++)
+ comm->tx_temp_skb_info[i].skb = NULL;
+
+ /* Allocate tx & rx descriptors. */
+ ret = spl2sw_descs_alloc(comm);
+ if (ret)
+ return ret;
+
+ spl2sw_tx_descs_init(comm);
+
+ return spl2sw_rx_descs_init(comm);
+}
diff --git a/drivers/net/ethernet/sunplus/spl2sw_desc.h b/drivers/net/ethernet/sunplus/spl2sw_desc.h
new file mode 100644
index 000000000..f04e2d85c
--- /dev/null
+++ b/drivers/net/ethernet/sunplus/spl2sw_desc.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright Sunplus Technology Co., Ltd.
+ * All rights reserved.
+ */
+
+#ifndef __SPL2SW_DESC_H__
+#define __SPL2SW_DESC_H__
+
+void spl2sw_rx_descs_flush(struct spl2sw_common *comm);
+void spl2sw_tx_descs_clean(struct spl2sw_common *comm);
+void spl2sw_rx_descs_clean(struct spl2sw_common *comm);
+void spl2sw_descs_clean(struct spl2sw_common *comm);
+void spl2sw_descs_free(struct spl2sw_common *comm);
+void spl2sw_tx_descs_init(struct spl2sw_common *comm);
+int spl2sw_rx_descs_init(struct spl2sw_common *comm);
+int spl2sw_descs_alloc(struct spl2sw_common *comm);
+int spl2sw_descs_init(struct spl2sw_common *comm);
+
+#endif
diff --git a/drivers/net/ethernet/sunplus/spl2sw_driver.c b/drivers/net/ethernet/sunplus/spl2sw_driver.c
new file mode 100644
index 000000000..8320fa833
--- /dev/null
+++ b/drivers/net/ethernet/sunplus/spl2sw_driver.c
@@ -0,0 +1,578 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright Sunplus Technology Co., Ltd.
+ * All rights reserved.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/nvmem-consumer.h>
+#include <linux/etherdevice.h>
+#include <linux/netdevice.h>
+#include <linux/spinlock.h>
+#include <linux/of_net.h>
+#include <linux/reset.h>
+#include <linux/clk.h>
+#include <linux/of.h>
+
+#include "spl2sw_register.h"
+#include "spl2sw_define.h"
+#include "spl2sw_desc.h"
+#include "spl2sw_mdio.h"
+#include "spl2sw_phy.h"
+#include "spl2sw_int.h"
+#include "spl2sw_mac.h"
+
+/* net device operations */
+static int spl2sw_ethernet_open(struct net_device *ndev)
+{
+ struct spl2sw_mac *mac = netdev_priv(ndev);
+ struct spl2sw_common *comm = mac->comm;
+ u32 mask;
+
+ netdev_dbg(ndev, "Open port = %x\n", mac->lan_port);
+
+ comm->enable |= mac->lan_port;
+
+ spl2sw_mac_hw_start(comm);
+
+ /* Enable TX and RX interrupts */
+ mask = readl(comm->l2sw_reg_base + L2SW_SW_INT_MASK_0);
+ mask &= ~(MAC_INT_TX | MAC_INT_RX);
+ writel(mask, comm->l2sw_reg_base + L2SW_SW_INT_MASK_0);
+
+ phy_start(ndev->phydev);
+
+ netif_start_queue(ndev);
+
+ return 0;
+}
+
+static int spl2sw_ethernet_stop(struct net_device *ndev)
+{
+ struct spl2sw_mac *mac = netdev_priv(ndev);
+ struct spl2sw_common *comm = mac->comm;
+
+ netif_stop_queue(ndev);
+
+ comm->enable &= ~mac->lan_port;
+
+ phy_stop(ndev->phydev);
+
+ spl2sw_mac_hw_stop(comm);
+
+ return 0;
+}
+
+static int spl2sw_ethernet_start_xmit(struct sk_buff *skb, struct net_device *ndev)
+{
+ struct spl2sw_mac *mac = netdev_priv(ndev);
+ struct spl2sw_common *comm = mac->comm;
+ struct spl2sw_skb_info *skbinfo;
+ struct spl2sw_mac_desc *txdesc;
+ unsigned long flags;
+ u32 mapping;
+ u32 tx_pos;
+ u32 cmd1;
+ u32 cmd2;
+
+ if (unlikely(comm->tx_desc_full == 1)) {
+ /* No TX descriptors left. Wait for tx interrupt. */
+ netdev_dbg(ndev, "TX descriptor queue full when xmit!\n");
+ return NETDEV_TX_BUSY;
+ }
+
+ /* If skb size is shorter than ETH_ZLEN (60), pad it with 0. */
+ if (unlikely(skb->len < ETH_ZLEN)) {
+ if (skb_padto(skb, ETH_ZLEN))
+ return NETDEV_TX_OK;
+
+ skb_put(skb, ETH_ZLEN - skb->len);
+ }
+
+ mapping = dma_map_single(&comm->pdev->dev, skb->data,
+ skb->len, DMA_TO_DEVICE);
+ if (dma_mapping_error(&comm->pdev->dev, mapping)) {
+ ndev->stats.tx_errors++;
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+
+ spin_lock_irqsave(&comm->tx_lock, flags);
+
+ tx_pos = comm->tx_pos;
+ txdesc = &comm->tx_desc[tx_pos];
+ skbinfo = &comm->tx_temp_skb_info[tx_pos];
+ skbinfo->mapping = mapping;
+ skbinfo->len = skb->len;
+ skbinfo->skb = skb;
+
+ /* Set up a TX descriptor */
+ cmd1 = TXD_OWN | TXD_SOP | TXD_EOP | (mac->to_vlan << 12) |
+ (skb->len & TXD_PKT_LEN);
+ cmd2 = skb->len & TXD_BUF_LEN1;
+
+ if (tx_pos == (TX_DESC_NUM - 1))
+ cmd2 |= TXD_EOR;
+
+ txdesc->addr1 = skbinfo->mapping;
+ txdesc->cmd2 = cmd2;
+ wmb(); /* Set TXD_OWN after other fields are effective. */
+ txdesc->cmd1 = cmd1;
+
+ /* Move tx_pos to next position */
+ tx_pos = ((tx_pos + 1) == TX_DESC_NUM) ? 0 : tx_pos + 1;
+
+ if (unlikely(tx_pos == comm->tx_done_pos)) {
+ netif_stop_queue(ndev);
+ comm->tx_desc_full = 1;
+ }
+ comm->tx_pos = tx_pos;
+ wmb(); /* make sure settings are effective. */
+
+ /* Trigger mac to transmit */
+ writel(MAC_TRIG_L_SOC0, comm->l2sw_reg_base + L2SW_CPU_TX_TRIG);
+
+ spin_unlock_irqrestore(&comm->tx_lock, flags);
+ return NETDEV_TX_OK;
+}
+
+static void spl2sw_ethernet_set_rx_mode(struct net_device *ndev)
+{
+ struct spl2sw_mac *mac = netdev_priv(ndev);
+
+ spl2sw_mac_rx_mode_set(mac);
+}
+
+static int spl2sw_ethernet_set_mac_address(struct net_device *ndev, void *addr)
+{
+ struct spl2sw_mac *mac = netdev_priv(ndev);
+ int err;
+
+ err = eth_mac_addr(ndev, addr);
+ if (err)
+ return err;
+
+ /* Delete the old MAC address */
+ netdev_dbg(ndev, "Old Ethernet (MAC) address = %pM\n", mac->mac_addr);
+ if (is_valid_ether_addr(mac->mac_addr)) {
+ err = spl2sw_mac_addr_del(mac);
+ if (err)
+ return err;
+ }
+
+ /* Set the MAC address */
+ ether_addr_copy(mac->mac_addr, ndev->dev_addr);
+ return spl2sw_mac_addr_add(mac);
+}
+
+static void spl2sw_ethernet_tx_timeout(struct net_device *ndev, unsigned int txqueue)
+{
+ struct spl2sw_mac *mac = netdev_priv(ndev);
+ struct spl2sw_common *comm = mac->comm;
+ unsigned long flags;
+ int i;
+
+ netdev_err(ndev, "TX timed out!\n");
+ ndev->stats.tx_errors++;
+
+ spin_lock_irqsave(&comm->tx_lock, flags);
+
+ for (i = 0; i < MAX_NETDEV_NUM; i++)
+ if (comm->ndev[i])
+ netif_stop_queue(comm->ndev[i]);
+
+ spl2sw_mac_soft_reset(comm);
+
+ /* Accept TX packets again. */
+ for (i = 0; i < MAX_NETDEV_NUM; i++)
+ if (comm->ndev[i]) {
+ netif_trans_update(comm->ndev[i]);
+ netif_wake_queue(comm->ndev[i]);
+ }
+
+ spin_unlock_irqrestore(&comm->tx_lock, flags);
+}
+
+static const struct net_device_ops netdev_ops = {
+ .ndo_open = spl2sw_ethernet_open,
+ .ndo_stop = spl2sw_ethernet_stop,
+ .ndo_start_xmit = spl2sw_ethernet_start_xmit,
+ .ndo_set_rx_mode = spl2sw_ethernet_set_rx_mode,
+ .ndo_set_mac_address = spl2sw_ethernet_set_mac_address,
+ .ndo_do_ioctl = phy_do_ioctl,
+ .ndo_tx_timeout = spl2sw_ethernet_tx_timeout,
+};
+
+static void spl2sw_check_mac_vendor_id_and_convert(u8 *mac_addr)
+{
+ u8 tmp;
+
+ /* Byte order of MAC address of some samples are reversed.
+ * Check vendor id and convert byte order if it is wrong.
+ * OUI of Sunplus: fc:4b:bc
+ */
+ if (mac_addr[5] == 0xfc && mac_addr[4] == 0x4b && mac_addr[3] == 0xbc &&
+ (mac_addr[0] != 0xfc || mac_addr[1] != 0x4b || mac_addr[2] != 0xbc)) {
+ /* Swap mac_addr[0] and mac_addr[5] */
+ tmp = mac_addr[0];
+ mac_addr[0] = mac_addr[5];
+ mac_addr[5] = tmp;
+
+ /* Swap mac_addr[1] and mac_addr[4] */
+ tmp = mac_addr[1];
+ mac_addr[1] = mac_addr[4];
+ mac_addr[4] = tmp;
+
+ /* Swap mac_addr[2] and mac_addr[3] */
+ tmp = mac_addr[2];
+ mac_addr[2] = mac_addr[3];
+ mac_addr[3] = tmp;
+ }
+}
+
+static int spl2sw_nvmem_get_mac_address(struct device *dev, struct device_node *np,
+ void *addrbuf)
+{
+ struct nvmem_cell *cell;
+ ssize_t len;
+ u8 *mac;
+
+ /* Get nvmem cell of mac-address from dts. */
+ cell = of_nvmem_cell_get(np, "mac-address");
+ if (IS_ERR(cell))
+ return PTR_ERR(cell);
+
+ /* Read mac address from nvmem cell. */
+ mac = nvmem_cell_read(cell, &len);
+ nvmem_cell_put(cell);
+ if (IS_ERR(mac))
+ return PTR_ERR(mac);
+
+ if (len != ETH_ALEN) {
+ kfree(mac);
+ dev_info(dev, "Invalid length of mac address in nvmem!\n");
+ return -EINVAL;
+ }
+
+ /* Byte order of some samples are reversed.
+ * Convert byte order here.
+ */
+ spl2sw_check_mac_vendor_id_and_convert(mac);
+
+ /* Check if mac address is valid */
+ if (!is_valid_ether_addr(mac)) {
+ kfree(mac);
+ dev_info(dev, "Invalid mac address in nvmem (%pM)!\n", mac);
+ return -EINVAL;
+ }
+
+ ether_addr_copy(addrbuf, mac);
+ kfree(mac);
+ return 0;
+}
+
+static u32 spl2sw_init_netdev(struct platform_device *pdev, u8 *mac_addr,
+ struct net_device **r_ndev)
+{
+ struct net_device *ndev;
+ struct spl2sw_mac *mac;
+ int ret;
+
+ /* Allocate the devices, and also allocate spl2sw_mac,
+ * we can get it by netdev_priv().
+ */
+ ndev = devm_alloc_etherdev(&pdev->dev, sizeof(*mac));
+ if (!ndev) {
+ *r_ndev = NULL;
+ return -ENOMEM;
+ }
+ SET_NETDEV_DEV(ndev, &pdev->dev);
+ ndev->netdev_ops = &netdev_ops;
+ mac = netdev_priv(ndev);
+ mac->ndev = ndev;
+ ether_addr_copy(mac->mac_addr, mac_addr);
+
+ eth_hw_addr_set(ndev, mac_addr);
+ dev_info(&pdev->dev, "Ethernet (MAC) address = %pM\n", mac_addr);
+
+ ret = register_netdev(ndev);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to register net device \"%s\"!\n",
+ ndev->name);
+ free_netdev(ndev);
+ *r_ndev = NULL;
+ return ret;
+ }
+ netdev_dbg(ndev, "Registered net device \"%s\" successfully.\n", ndev->name);
+
+ *r_ndev = ndev;
+ return 0;
+}
+
+static struct device_node *spl2sw_get_eth_child_node(struct device_node *ether_np, int id)
+{
+ struct device_node *port_np;
+ int port_id;
+
+ for_each_child_of_node(ether_np, port_np) {
+ /* It is not a 'port' node, continue. */
+ if (strcmp(port_np->name, "port"))
+ continue;
+
+ if (of_property_read_u32(port_np, "reg", &port_id) < 0)
+ continue;
+
+ if (port_id == id)
+ return port_np;
+ }
+
+ /* Not found! */
+ return NULL;
+}
+
+static int spl2sw_probe(struct platform_device *pdev)
+{
+ struct device_node *eth_ports_np;
+ struct device_node *port_np;
+ struct spl2sw_common *comm;
+ struct device_node *phy_np;
+ phy_interface_t phy_mode;
+ struct net_device *ndev;
+ struct spl2sw_mac *mac;
+ u8 mac_addr[ETH_ALEN];
+ int irq, i, ret;
+
+ if (platform_get_drvdata(pdev))
+ return -ENODEV;
+
+ /* Allocate memory for 'spl2sw_common' area. */
+ comm = devm_kzalloc(&pdev->dev, sizeof(*comm), GFP_KERNEL);
+ if (!comm)
+ return -ENOMEM;
+
+ comm->pdev = pdev;
+ platform_set_drvdata(pdev, comm);
+
+ spin_lock_init(&comm->tx_lock);
+ spin_lock_init(&comm->mdio_lock);
+ spin_lock_init(&comm->int_mask_lock);
+
+ /* Get memory resource 0 from dts. */
+ comm->l2sw_reg_base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(comm->l2sw_reg_base))
+ return PTR_ERR(comm->l2sw_reg_base);
+
+ /* Get irq resource from dts. */
+ ret = platform_get_irq(pdev, 0);
+ if (ret < 0)
+ return ret;
+ irq = ret;
+
+ /* Get clock controller. */
+ comm->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(comm->clk)) {
+ dev_err_probe(&pdev->dev, PTR_ERR(comm->clk),
+ "Failed to retrieve clock controller!\n");
+ return PTR_ERR(comm->clk);
+ }
+
+ /* Get reset controller. */
+ comm->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);
+ if (IS_ERR(comm->rstc)) {
+ dev_err_probe(&pdev->dev, PTR_ERR(comm->rstc),
+ "Failed to retrieve reset controller!\n");
+ return PTR_ERR(comm->rstc);
+ }
+
+ /* Enable clock. */
+ ret = clk_prepare_enable(comm->clk);
+ if (ret)
+ return ret;
+ udelay(1);
+
+ /* Reset MAC */
+ reset_control_assert(comm->rstc);
+ udelay(1);
+ reset_control_deassert(comm->rstc);
+ usleep_range(1000, 2000);
+
+ /* Request irq. */
+ ret = devm_request_irq(&pdev->dev, irq, spl2sw_ethernet_interrupt, 0,
+ dev_name(&pdev->dev), comm);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to request irq #%d!\n", irq);
+ goto out_clk_disable;
+ }
+
+ /* Initialize TX and RX descriptors. */
+ ret = spl2sw_descs_init(comm);
+ if (ret) {
+ dev_err(&pdev->dev, "Fail to initialize mac descriptors!\n");
+ spl2sw_descs_free(comm);
+ goto out_clk_disable;
+ }
+
+ /* Initialize MAC. */
+ spl2sw_mac_init(comm);
+
+ /* Initialize mdio bus */
+ ret = spl2sw_mdio_init(comm);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to initialize mdio bus!\n");
+ goto out_clk_disable;
+ }
+
+ /* Get child node ethernet-ports. */
+ eth_ports_np = of_get_child_by_name(pdev->dev.of_node, "ethernet-ports");
+ if (!eth_ports_np) {
+ dev_err(&pdev->dev, "No ethernet-ports child node found!\n");
+ ret = -ENODEV;
+ goto out_free_mdio;
+ }
+
+ for (i = 0; i < MAX_NETDEV_NUM; i++) {
+ /* Get port@i of node ethernet-ports. */
+ port_np = spl2sw_get_eth_child_node(eth_ports_np, i);
+ if (!port_np)
+ continue;
+
+ /* Get phy-mode. */
+ if (of_get_phy_mode(port_np, &phy_mode)) {
+ dev_err(&pdev->dev, "Failed to get phy-mode property of port@%d!\n",
+ i);
+ continue;
+ }
+
+ /* Get phy-handle. */
+ phy_np = of_parse_phandle(port_np, "phy-handle", 0);
+ if (!phy_np) {
+ dev_err(&pdev->dev, "Failed to get phy-handle property of port@%d!\n",
+ i);
+ continue;
+ }
+
+ /* Get mac-address from nvmem. */
+ ret = spl2sw_nvmem_get_mac_address(&pdev->dev, port_np, mac_addr);
+ if (ret == -EPROBE_DEFER) {
+ goto out_unregister_dev;
+ } else if (ret) {
+ dev_info(&pdev->dev, "Generate a random mac address!\n");
+ eth_random_addr(mac_addr);
+ }
+
+ /* Initialize the net device. */
+ ret = spl2sw_init_netdev(pdev, mac_addr, &ndev);
+ if (ret)
+ goto out_unregister_dev;
+
+ ndev->irq = irq;
+ comm->ndev[i] = ndev;
+ mac = netdev_priv(ndev);
+ mac->phy_node = phy_np;
+ mac->phy_mode = phy_mode;
+ mac->comm = comm;
+
+ mac->lan_port = 0x1 << i; /* forward to port i */
+ mac->to_vlan = 0x1 << i; /* vlan group: i */
+ mac->vlan_id = i; /* vlan group: i */
+
+ /* Set MAC address */
+ ret = spl2sw_mac_addr_add(mac);
+ if (ret)
+ goto out_unregister_dev;
+
+ spl2sw_mac_rx_mode_set(mac);
+ }
+
+ /* Find first valid net device. */
+ for (i = 0; i < MAX_NETDEV_NUM; i++) {
+ if (comm->ndev[i])
+ break;
+ }
+ if (i >= MAX_NETDEV_NUM) {
+ dev_err(&pdev->dev, "No valid ethernet port!\n");
+ ret = -ENODEV;
+ goto out_free_mdio;
+ }
+
+ /* Save first valid net device */
+ ndev = comm->ndev[i];
+
+ ret = spl2sw_phy_connect(comm);
+ if (ret) {
+ netdev_err(ndev, "Failed to connect phy!\n");
+ goto out_unregister_dev;
+ }
+
+ /* Add and enable napi. */
+ netif_napi_add(ndev, &comm->rx_napi, spl2sw_rx_poll, NAPI_POLL_WEIGHT);
+ napi_enable(&comm->rx_napi);
+ netif_napi_add(ndev, &comm->tx_napi, spl2sw_tx_poll, NAPI_POLL_WEIGHT);
+ napi_enable(&comm->tx_napi);
+ return 0;
+
+out_unregister_dev:
+ for (i = 0; i < MAX_NETDEV_NUM; i++)
+ if (comm->ndev[i])
+ unregister_netdev(comm->ndev[i]);
+
+out_free_mdio:
+ spl2sw_mdio_remove(comm);
+
+out_clk_disable:
+ clk_disable_unprepare(comm->clk);
+ return ret;
+}
+
+static int spl2sw_remove(struct platform_device *pdev)
+{
+ struct spl2sw_common *comm;
+ int i;
+
+ comm = platform_get_drvdata(pdev);
+
+ spl2sw_phy_remove(comm);
+
+ /* Unregister and free net device. */
+ for (i = 0; i < MAX_NETDEV_NUM; i++)
+ if (comm->ndev[i])
+ unregister_netdev(comm->ndev[i]);
+
+ comm->enable = 0;
+ spl2sw_mac_hw_stop(comm);
+ spl2sw_descs_free(comm);
+
+ /* Disable and delete napi. */
+ napi_disable(&comm->rx_napi);
+ netif_napi_del(&comm->rx_napi);
+ napi_disable(&comm->tx_napi);
+ netif_napi_del(&comm->tx_napi);
+
+ spl2sw_mdio_remove(comm);
+
+ clk_disable_unprepare(comm->clk);
+
+ return 0;
+}
+
+static const struct of_device_id spl2sw_of_match[] = {
+ {.compatible = "sunplus,sp7021-emac"},
+ { /* sentinel */ }
+};
+
+MODULE_DEVICE_TABLE(of, spl2sw_of_match);
+
+static struct platform_driver spl2sw_driver = {
+ .probe = spl2sw_probe,
+ .remove = spl2sw_remove,
+ .driver = {
+ .name = "sp7021_emac",
+ .owner = THIS_MODULE,
+ .of_match_table = spl2sw_of_match,
+ },
+};
+
+module_platform_driver(spl2sw_driver);
+
+MODULE_AUTHOR("Wells Lu <wellslutw@gmail.com>");
+MODULE_DESCRIPTION("Sunplus Dual 10M/100M Ethernet driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/net/ethernet/sunplus/spl2sw_int.c b/drivers/net/ethernet/sunplus/spl2sw_int.c
new file mode 100644
index 000000000..e8eb30c44
--- /dev/null
+++ b/drivers/net/ethernet/sunplus/spl2sw_int.c
@@ -0,0 +1,273 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright Sunplus Technology Co., Ltd.
+ * All rights reserved.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/etherdevice.h>
+#include <linux/netdevice.h>
+#include <linux/bitfield.h>
+#include <linux/spinlock.h>
+#include <linux/of_mdio.h>
+
+#include "spl2sw_register.h"
+#include "spl2sw_define.h"
+#include "spl2sw_int.h"
+
+int spl2sw_rx_poll(struct napi_struct *napi, int budget)
+{
+ struct spl2sw_common *comm = container_of(napi, struct spl2sw_common, rx_napi);
+ struct spl2sw_mac_desc *desc, *h_desc;
+ struct net_device_stats *stats;
+ struct sk_buff *skb, *new_skb;
+ struct spl2sw_skb_info *sinfo;
+ int budget_left = budget;
+ unsigned long flags;
+ u32 rx_pos, pkg_len;
+ u32 num, rx_count;
+ s32 queue;
+ u32 mask;
+ int port;
+ u32 cmd;
+
+ /* Process high-priority queue and then low-priority queue. */
+ for (queue = 0; queue < RX_DESC_QUEUE_NUM; queue++) {
+ rx_pos = comm->rx_pos[queue];
+ rx_count = comm->rx_desc_num[queue];
+
+ for (num = 0; num < rx_count && budget_left; num++) {
+ sinfo = comm->rx_skb_info[queue] + rx_pos;
+ desc = comm->rx_desc[queue] + rx_pos;
+ cmd = desc->cmd1;
+
+ if (cmd & RXD_OWN)
+ break;
+
+ port = FIELD_GET(RXD_PKT_SP, cmd);
+ if (port < MAX_NETDEV_NUM && comm->ndev[port])
+ stats = &comm->ndev[port]->stats;
+ else
+ goto spl2sw_rx_poll_rec_err;
+
+ pkg_len = FIELD_GET(RXD_PKT_LEN, cmd);
+ if (unlikely((cmd & RXD_ERR_CODE) || pkg_len < ETH_ZLEN + 4)) {
+ stats->rx_length_errors++;
+ stats->rx_dropped++;
+ goto spl2sw_rx_poll_rec_err;
+ }
+
+ dma_unmap_single(&comm->pdev->dev, sinfo->mapping,
+ comm->rx_desc_buff_size, DMA_FROM_DEVICE);
+
+ skb = sinfo->skb;
+ skb_put(skb, pkg_len - 4); /* Minus FCS */
+ skb->ip_summed = CHECKSUM_NONE;
+ skb->protocol = eth_type_trans(skb, comm->ndev[port]);
+ netif_receive_skb(skb);
+
+ stats->rx_packets++;
+ stats->rx_bytes += skb->len;
+
+ /* Allocate a new skb for receiving. */
+ new_skb = netdev_alloc_skb(NULL, comm->rx_desc_buff_size);
+ if (unlikely(!new_skb)) {
+ desc->cmd2 = (rx_pos == comm->rx_desc_num[queue] - 1) ?
+ RXD_EOR : 0;
+ sinfo->skb = NULL;
+ sinfo->mapping = 0;
+ desc->addr1 = 0;
+ goto spl2sw_rx_poll_alloc_err;
+ }
+
+ sinfo->mapping = dma_map_single(&comm->pdev->dev, new_skb->data,
+ comm->rx_desc_buff_size,
+ DMA_FROM_DEVICE);
+ if (dma_mapping_error(&comm->pdev->dev, sinfo->mapping)) {
+ dev_kfree_skb_irq(new_skb);
+ desc->cmd2 = (rx_pos == comm->rx_desc_num[queue] - 1) ?
+ RXD_EOR : 0;
+ sinfo->skb = NULL;
+ sinfo->mapping = 0;
+ desc->addr1 = 0;
+ goto spl2sw_rx_poll_alloc_err;
+ }
+
+ sinfo->skb = new_skb;
+ desc->addr1 = sinfo->mapping;
+
+spl2sw_rx_poll_rec_err:
+ desc->cmd2 = (rx_pos == comm->rx_desc_num[queue] - 1) ?
+ RXD_EOR | comm->rx_desc_buff_size :
+ comm->rx_desc_buff_size;
+
+ wmb(); /* Set RXD_OWN after other fields are effective. */
+ desc->cmd1 = RXD_OWN;
+
+spl2sw_rx_poll_alloc_err:
+ /* Move rx_pos to next position */
+ rx_pos = ((rx_pos + 1) == comm->rx_desc_num[queue]) ? 0 : rx_pos + 1;
+
+ budget_left--;
+
+ /* If there are packets in high-priority queue,
+ * stop processing low-priority queue.
+ */
+ if (queue == 1 && !(h_desc->cmd1 & RXD_OWN))
+ break;
+ }
+
+ comm->rx_pos[queue] = rx_pos;
+
+ /* Save pointer to last rx descriptor of high-priority queue. */
+ if (queue == 0)
+ h_desc = comm->rx_desc[queue] + rx_pos;
+ }
+
+ wmb(); /* make sure settings are effective. */
+ spin_lock_irqsave(&comm->int_mask_lock, flags);
+ mask = readl(comm->l2sw_reg_base + L2SW_SW_INT_MASK_0);
+ mask &= ~MAC_INT_RX;
+ writel(mask, comm->l2sw_reg_base + L2SW_SW_INT_MASK_0);
+ spin_unlock_irqrestore(&comm->int_mask_lock, flags);
+
+ napi_complete(napi);
+ return budget - budget_left;
+}
+
+int spl2sw_tx_poll(struct napi_struct *napi, int budget)
+{
+ struct spl2sw_common *comm = container_of(napi, struct spl2sw_common, tx_napi);
+ struct spl2sw_skb_info *skbinfo;
+ struct net_device_stats *stats;
+ int budget_left = budget;
+ unsigned long flags;
+ u32 tx_done_pos;
+ u32 mask;
+ u32 cmd;
+ int i;
+
+ spin_lock(&comm->tx_lock);
+
+ tx_done_pos = comm->tx_done_pos;
+ while (((tx_done_pos != comm->tx_pos) || (comm->tx_desc_full == 1)) && budget_left) {
+ cmd = comm->tx_desc[tx_done_pos].cmd1;
+ if (cmd & TXD_OWN)
+ break;
+
+ skbinfo = &comm->tx_temp_skb_info[tx_done_pos];
+ if (unlikely(!skbinfo->skb))
+ goto spl2sw_tx_poll_next;
+
+ i = ffs(FIELD_GET(TXD_VLAN, cmd)) - 1;
+ if (i < MAX_NETDEV_NUM && comm->ndev[i])
+ stats = &comm->ndev[i]->stats;
+ else
+ goto spl2sw_tx_poll_unmap;
+
+ if (unlikely(cmd & (TXD_ERR_CODE))) {
+ stats->tx_errors++;
+ } else {
+ stats->tx_packets++;
+ stats->tx_bytes += skbinfo->len;
+ }
+
+spl2sw_tx_poll_unmap:
+ dma_unmap_single(&comm->pdev->dev, skbinfo->mapping, skbinfo->len,
+ DMA_TO_DEVICE);
+ skbinfo->mapping = 0;
+ dev_kfree_skb_irq(skbinfo->skb);
+ skbinfo->skb = NULL;
+
+spl2sw_tx_poll_next:
+ /* Move tx_done_pos to next position */
+ tx_done_pos = ((tx_done_pos + 1) == TX_DESC_NUM) ? 0 : tx_done_pos + 1;
+
+ if (comm->tx_desc_full == 1)
+ comm->tx_desc_full = 0;
+
+ budget_left--;
+ }
+
+ comm->tx_done_pos = tx_done_pos;
+ if (!comm->tx_desc_full)
+ for (i = 0; i < MAX_NETDEV_NUM; i++)
+ if (comm->ndev[i])
+ if (netif_queue_stopped(comm->ndev[i]))
+ netif_wake_queue(comm->ndev[i]);
+
+ spin_unlock(&comm->tx_lock);
+
+ wmb(); /* make sure settings are effective. */
+ spin_lock_irqsave(&comm->int_mask_lock, flags);
+ mask = readl(comm->l2sw_reg_base + L2SW_SW_INT_MASK_0);
+ mask &= ~MAC_INT_TX;
+ writel(mask, comm->l2sw_reg_base + L2SW_SW_INT_MASK_0);
+ spin_unlock_irqrestore(&comm->int_mask_lock, flags);
+
+ napi_complete(napi);
+ return budget - budget_left;
+}
+
+irqreturn_t spl2sw_ethernet_interrupt(int irq, void *dev_id)
+{
+ struct spl2sw_common *comm = (struct spl2sw_common *)dev_id;
+ u32 status;
+ u32 mask;
+ int i;
+
+ status = readl(comm->l2sw_reg_base + L2SW_SW_INT_STATUS_0);
+ if (unlikely(!status)) {
+ dev_dbg(&comm->pdev->dev, "Interrput status is null!\n");
+ goto spl2sw_ethernet_int_out;
+ }
+ writel(status, comm->l2sw_reg_base + L2SW_SW_INT_STATUS_0);
+
+ if (status & MAC_INT_RX) {
+ /* Disable RX interrupts. */
+ spin_lock(&comm->int_mask_lock);
+ mask = readl(comm->l2sw_reg_base + L2SW_SW_INT_MASK_0);
+ mask |= MAC_INT_RX;
+ writel(mask, comm->l2sw_reg_base + L2SW_SW_INT_MASK_0);
+ spin_unlock(&comm->int_mask_lock);
+
+ if (unlikely(status & MAC_INT_RX_DES_ERR)) {
+ for (i = 0; i < MAX_NETDEV_NUM; i++)
+ if (comm->ndev[i]) {
+ comm->ndev[i]->stats.rx_fifo_errors++;
+ break;
+ }
+ dev_dbg(&comm->pdev->dev, "Illegal RX Descriptor!\n");
+ }
+
+ napi_schedule(&comm->rx_napi);
+ }
+
+ if (status & MAC_INT_TX) {
+ /* Disable TX interrupts. */
+ spin_lock(&comm->int_mask_lock);
+ mask = readl(comm->l2sw_reg_base + L2SW_SW_INT_MASK_0);
+ mask |= MAC_INT_TX;
+ writel(mask, comm->l2sw_reg_base + L2SW_SW_INT_MASK_0);
+ spin_unlock(&comm->int_mask_lock);
+
+ if (unlikely(status & MAC_INT_TX_DES_ERR)) {
+ for (i = 0; i < MAX_NETDEV_NUM; i++)
+ if (comm->ndev[i]) {
+ comm->ndev[i]->stats.tx_fifo_errors++;
+ break;
+ }
+ dev_dbg(&comm->pdev->dev, "Illegal TX Descriptor Error\n");
+
+ spin_lock(&comm->int_mask_lock);
+ mask = readl(comm->l2sw_reg_base + L2SW_SW_INT_MASK_0);
+ mask &= ~MAC_INT_TX;
+ writel(mask, comm->l2sw_reg_base + L2SW_SW_INT_MASK_0);
+ spin_unlock(&comm->int_mask_lock);
+ } else {
+ napi_schedule(&comm->tx_napi);
+ }
+ }
+
+spl2sw_ethernet_int_out:
+ return IRQ_HANDLED;
+}
diff --git a/drivers/net/ethernet/sunplus/spl2sw_int.h b/drivers/net/ethernet/sunplus/spl2sw_int.h
new file mode 100644
index 000000000..64f6f2572
--- /dev/null
+++ b/drivers/net/ethernet/sunplus/spl2sw_int.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright Sunplus Technology Co., Ltd.
+ * All rights reserved.
+ */
+
+#ifndef __SPL2SW_INT_H__
+#define __SPL2SW_INT_H__
+
+int spl2sw_rx_poll(struct napi_struct *napi, int budget);
+int spl2sw_tx_poll(struct napi_struct *napi, int budget);
+irqreturn_t spl2sw_ethernet_interrupt(int irq, void *dev_id);
+
+#endif
diff --git a/drivers/net/ethernet/sunplus/spl2sw_mac.c b/drivers/net/ethernet/sunplus/spl2sw_mac.c
new file mode 100644
index 000000000..57e431dfc
--- /dev/null
+++ b/drivers/net/ethernet/sunplus/spl2sw_mac.c
@@ -0,0 +1,274 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright Sunplus Technology Co., Ltd.
+ * All rights reserved.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/netdevice.h>
+#include <linux/bitfield.h>
+#include <linux/of_mdio.h>
+
+#include "spl2sw_register.h"
+#include "spl2sw_define.h"
+#include "spl2sw_desc.h"
+#include "spl2sw_mac.h"
+
+void spl2sw_mac_hw_stop(struct spl2sw_common *comm)
+{
+ u32 reg;
+
+ if (comm->enable == 0) {
+ /* Mask and clear all interrupts. */
+ writel(0xffffffff, comm->l2sw_reg_base + L2SW_SW_INT_MASK_0);
+ writel(0xffffffff, comm->l2sw_reg_base + L2SW_SW_INT_STATUS_0);
+
+ /* Disable cpu 0 and cpu 1. */
+ reg = readl(comm->l2sw_reg_base + L2SW_CPU_CNTL);
+ reg |= MAC_DIS_SOC1_CPU | MAC_DIS_SOC0_CPU;
+ writel(reg, comm->l2sw_reg_base + L2SW_CPU_CNTL);
+ }
+
+ /* Disable LAN ports. */
+ reg = readl(comm->l2sw_reg_base + L2SW_PORT_CNTL0);
+ reg |= FIELD_PREP(MAC_DIS_PORT, ~comm->enable);
+ writel(reg, comm->l2sw_reg_base + L2SW_PORT_CNTL0);
+}
+
+void spl2sw_mac_hw_start(struct spl2sw_common *comm)
+{
+ u32 reg;
+
+ /* Enable cpu port 0 (6) & CRC padding (8) */
+ reg = readl(comm->l2sw_reg_base + L2SW_CPU_CNTL);
+ reg &= ~MAC_DIS_SOC0_CPU;
+ reg |= MAC_EN_CRC_SOC0;
+ writel(reg, comm->l2sw_reg_base + L2SW_CPU_CNTL);
+
+ /* Enable port 0 & port 1 */
+ reg = readl(comm->l2sw_reg_base + L2SW_PORT_CNTL0);
+ reg &= FIELD_PREP(MAC_DIS_PORT, ~comm->enable) | ~MAC_DIS_PORT;
+ writel(reg, comm->l2sw_reg_base + L2SW_PORT_CNTL0);
+}
+
+int spl2sw_mac_addr_add(struct spl2sw_mac *mac)
+{
+ struct spl2sw_common *comm = mac->comm;
+ u32 reg;
+ int ret;
+
+ /* Write 6-octet MAC address. */
+ writel((mac->mac_addr[0] << 0) + (mac->mac_addr[1] << 8),
+ comm->l2sw_reg_base + L2SW_W_MAC_15_0);
+ writel((mac->mac_addr[2] << 0) + (mac->mac_addr[3] << 8) +
+ (mac->mac_addr[4] << 16) + (mac->mac_addr[5] << 24),
+ comm->l2sw_reg_base + L2SW_W_MAC_47_16);
+
+ /* Set learn port = cpu_port, aging = 1 */
+ reg = MAC_W_CPU_PORT_0 | FIELD_PREP(MAC_W_VID, mac->vlan_id) |
+ FIELD_PREP(MAC_W_AGE, 1) | MAC_W_MAC_CMD;
+ writel(reg, comm->l2sw_reg_base + L2SW_WT_MAC_AD0);
+
+ /* Wait for completing. */
+ ret = read_poll_timeout(readl, reg, reg & MAC_W_MAC_DONE, 1, 200, true,
+ comm->l2sw_reg_base + L2SW_WT_MAC_AD0);
+ if (ret) {
+ netdev_err(mac->ndev, "Failed to add address to table!\n");
+ return ret;
+ }
+
+ netdev_dbg(mac->ndev, "mac_ad0 = %08x, mac_ad = %08x%04x\n",
+ readl(comm->l2sw_reg_base + L2SW_WT_MAC_AD0),
+ (u32)FIELD_GET(MAC_W_MAC_47_16,
+ readl(comm->l2sw_reg_base + L2SW_W_MAC_47_16)),
+ (u32)FIELD_GET(MAC_W_MAC_15_0,
+ readl(comm->l2sw_reg_base + L2SW_W_MAC_15_0)));
+ return 0;
+}
+
+int spl2sw_mac_addr_del(struct spl2sw_mac *mac)
+{
+ struct spl2sw_common *comm = mac->comm;
+ u32 reg;
+ int ret;
+
+ /* Write 6-octet MAC address. */
+ writel((mac->mac_addr[0] << 0) + (mac->mac_addr[1] << 8),
+ comm->l2sw_reg_base + L2SW_W_MAC_15_0);
+ writel((mac->mac_addr[2] << 0) + (mac->mac_addr[3] << 8) +
+ (mac->mac_addr[4] << 16) + (mac->mac_addr[5] << 24),
+ comm->l2sw_reg_base + L2SW_W_MAC_47_16);
+
+ /* Set learn port = lan_port0 and aging = 0
+ * to wipe (age) out the entry.
+ */
+ reg = MAC_W_LAN_PORT_0 | FIELD_PREP(MAC_W_VID, mac->vlan_id) | MAC_W_MAC_CMD;
+ writel(reg, comm->l2sw_reg_base + L2SW_WT_MAC_AD0);
+
+ /* Wait for completing. */
+ ret = read_poll_timeout(readl, reg, reg & MAC_W_MAC_DONE, 1, 200, true,
+ comm->l2sw_reg_base + L2SW_WT_MAC_AD0);
+ if (ret) {
+ netdev_err(mac->ndev, "Failed to delete address from table!\n");
+ return ret;
+ }
+
+ netdev_dbg(mac->ndev, "mac_ad0 = %08x, mac_ad = %08x%04x\n",
+ readl(comm->l2sw_reg_base + L2SW_WT_MAC_AD0),
+ (u32)FIELD_GET(MAC_W_MAC_47_16,
+ readl(comm->l2sw_reg_base + L2SW_W_MAC_47_16)),
+ (u32)FIELD_GET(MAC_W_MAC_15_0,
+ readl(comm->l2sw_reg_base + L2SW_W_MAC_15_0)));
+ return 0;
+}
+
+void spl2sw_mac_hw_init(struct spl2sw_common *comm)
+{
+ u32 reg;
+
+ /* Disable cpu0 and cpu 1 port. */
+ reg = readl(comm->l2sw_reg_base + L2SW_CPU_CNTL);
+ reg |= MAC_DIS_SOC1_CPU | MAC_DIS_SOC0_CPU;
+ writel(reg, comm->l2sw_reg_base + L2SW_CPU_CNTL);
+
+ /* Set base addresses of TX and RX queues. */
+ writel(comm->desc_dma, comm->l2sw_reg_base + L2SW_TX_LBASE_ADDR_0);
+ writel(comm->desc_dma + sizeof(struct spl2sw_mac_desc) * TX_DESC_NUM,
+ comm->l2sw_reg_base + L2SW_TX_HBASE_ADDR_0);
+ writel(comm->desc_dma + sizeof(struct spl2sw_mac_desc) * (TX_DESC_NUM +
+ MAC_GUARD_DESC_NUM), comm->l2sw_reg_base + L2SW_RX_HBASE_ADDR_0);
+ writel(comm->desc_dma + sizeof(struct spl2sw_mac_desc) * (TX_DESC_NUM +
+ MAC_GUARD_DESC_NUM + RX_QUEUE0_DESC_NUM),
+ comm->l2sw_reg_base + L2SW_RX_LBASE_ADDR_0);
+
+ /* Fc_rls_th=0x4a, Fc_set_th=0x3a, Drop_rls_th=0x2d, Drop_set_th=0x1d */
+ writel(0x4a3a2d1d, comm->l2sw_reg_base + L2SW_FL_CNTL_TH);
+
+ /* Cpu_rls_th=0x4a, Cpu_set_th=0x3a, Cpu_th=0x12, Port_th=0x12 */
+ writel(0x4a3a1212, comm->l2sw_reg_base + L2SW_CPU_FL_CNTL_TH);
+
+ /* mtcc_lmt=0xf, Pri_th_l=6, Pri_th_h=6, weigh_8x_en=1 */
+ writel(0xf6680000, comm->l2sw_reg_base + L2SW_PRI_FL_CNTL);
+
+ /* High-active LED */
+ reg = readl(comm->l2sw_reg_base + L2SW_LED_PORT0);
+ reg |= MAC_LED_ACT_HI;
+ writel(reg, comm->l2sw_reg_base + L2SW_LED_PORT0);
+
+ /* Disable aging of cpu port 0 & 1.
+ * Disable SA learning of cpu port 0 & 1.
+ * Enable UC and MC packets
+ */
+ reg = readl(comm->l2sw_reg_base + L2SW_CPU_CNTL);
+ reg &= ~(MAC_EN_SOC1_AGING | MAC_EN_SOC0_AGING |
+ MAC_DIS_BC2CPU_P1 | MAC_DIS_BC2CPU_P0 |
+ MAC_DIS_MC2CPU_P1 | MAC_DIS_MC2CPU_P0);
+ reg |= MAC_DIS_LRN_SOC1 | MAC_DIS_LRN_SOC0;
+ writel(reg, comm->l2sw_reg_base + L2SW_CPU_CNTL);
+
+ /* Enable RMC2CPU for port 0 & 1
+ * Enable Flow control for port 0 & 1
+ * Enable Back pressure for port 0 & 1
+ */
+ reg = readl(comm->l2sw_reg_base + L2SW_PORT_CNTL0);
+ reg &= ~(MAC_DIS_RMC2CPU_P1 | MAC_DIS_RMC2CPU_P0);
+ reg |= MAC_EN_FLOW_CTL_P1 | MAC_EN_FLOW_CTL_P0 |
+ MAC_EN_BACK_PRESS_P1 | MAC_EN_BACK_PRESS_P0;
+ writel(reg, comm->l2sw_reg_base + L2SW_PORT_CNTL0);
+
+ /* Disable LAN port SA learning. */
+ reg = readl(comm->l2sw_reg_base + L2SW_PORT_CNTL1);
+ reg |= MAC_DIS_SA_LRN_P1 | MAC_DIS_SA_LRN_P0;
+ writel(reg, comm->l2sw_reg_base + L2SW_PORT_CNTL1);
+
+ /* Enable rmii force mode and
+ * set both external phy-address to 31.
+ */
+ reg = readl(comm->l2sw_reg_base + L2SW_MAC_FORCE_MODE);
+ reg &= ~(MAC_EXT_PHY1_ADDR | MAC_EXT_PHY0_ADDR);
+ reg |= FIELD_PREP(MAC_EXT_PHY1_ADDR, 31) | FIELD_PREP(MAC_EXT_PHY0_ADDR, 31);
+ reg |= MAC_FORCE_RMII_EN_1 | MAC_FORCE_RMII_EN_0;
+ writel(reg, comm->l2sw_reg_base + L2SW_MAC_FORCE_MODE);
+
+ /* Port 0: VLAN group 0
+ * Port 1: VLAN group 1
+ */
+ reg = FIELD_PREP(MAC_P1_PVID, 1) | FIELD_PREP(MAC_P0_PVID, 0);
+ writel(reg, comm->l2sw_reg_base + L2SW_PVID_CONFIG0);
+
+ /* VLAN group 0: cpu0 (bit3) + port0 (bit0) = 1001 = 0x9
+ * VLAN group 1: cpu0 (bit3) + port1 (bit1) = 1010 = 0xa
+ */
+ reg = FIELD_PREP(MAC_VLAN_MEMSET_1, 0xa) | FIELD_PREP(MAC_VLAN_MEMSET_0, 9);
+ writel(reg, comm->l2sw_reg_base + L2SW_VLAN_MEMSET_CONFIG0);
+
+ /* RMC forward: to_cpu (1)
+ * LED: 60mS (1)
+ * BC storm prev: 31 BC (1)
+ */
+ reg = readl(comm->l2sw_reg_base + L2SW_SW_GLB_CNTL);
+ reg &= ~(MAC_RMC_TB_FAULT_RULE | MAC_LED_FLASH_TIME | MAC_BC_STORM_PREV);
+ reg |= FIELD_PREP(MAC_RMC_TB_FAULT_RULE, 1) |
+ FIELD_PREP(MAC_LED_FLASH_TIME, 1) |
+ FIELD_PREP(MAC_BC_STORM_PREV, 1);
+ writel(reg, comm->l2sw_reg_base + L2SW_SW_GLB_CNTL);
+
+ writel(MAC_INT_MASK_DEF, comm->l2sw_reg_base + L2SW_SW_INT_MASK_0);
+}
+
+void spl2sw_mac_rx_mode_set(struct spl2sw_mac *mac)
+{
+ struct spl2sw_common *comm = mac->comm;
+ struct net_device *ndev = mac->ndev;
+ u32 mask, reg, rx_mode;
+
+ netdev_dbg(ndev, "ndev->flags = %08x\n", ndev->flags);
+ mask = FIELD_PREP(MAC_DIS_MC2CPU, mac->lan_port) |
+ FIELD_PREP(MAC_DIS_UN2CPU, mac->lan_port);
+ reg = readl(comm->l2sw_reg_base + L2SW_CPU_CNTL);
+
+ if (ndev->flags & IFF_PROMISC) {
+ /* Allow MC and unknown UC packets */
+ rx_mode = FIELD_PREP(MAC_DIS_MC2CPU, mac->lan_port) |
+ FIELD_PREP(MAC_DIS_UN2CPU, mac->lan_port);
+ } else if ((!netdev_mc_empty(ndev) && (ndev->flags & IFF_MULTICAST)) ||
+ (ndev->flags & IFF_ALLMULTI)) {
+ /* Allow MC packets */
+ rx_mode = FIELD_PREP(MAC_DIS_MC2CPU, mac->lan_port);
+ } else {
+ /* Disable MC and unknown UC packets */
+ rx_mode = 0;
+ }
+
+ writel((reg & (~mask)) | ((~rx_mode) & mask), comm->l2sw_reg_base + L2SW_CPU_CNTL);
+ netdev_dbg(ndev, "cpu_cntl = %08x\n", readl(comm->l2sw_reg_base + L2SW_CPU_CNTL));
+}
+
+void spl2sw_mac_init(struct spl2sw_common *comm)
+{
+ u32 i;
+
+ for (i = 0; i < RX_DESC_QUEUE_NUM; i++)
+ comm->rx_pos[i] = 0;
+ mb(); /* make sure settings are effective. */
+
+ spl2sw_mac_hw_init(comm);
+}
+
+void spl2sw_mac_soft_reset(struct spl2sw_common *comm)
+{
+ u32 i;
+
+ spl2sw_mac_hw_stop(comm);
+
+ spl2sw_rx_descs_flush(comm);
+ comm->tx_pos = 0;
+ comm->tx_done_pos = 0;
+ comm->tx_desc_full = 0;
+
+ for (i = 0; i < RX_DESC_QUEUE_NUM; i++)
+ comm->rx_pos[i] = 0;
+ mb(); /* make sure settings are effective. */
+
+ spl2sw_mac_hw_init(comm);
+ spl2sw_mac_hw_start(comm);
+}
diff --git a/drivers/net/ethernet/sunplus/spl2sw_mac.h b/drivers/net/ethernet/sunplus/spl2sw_mac.h
new file mode 100644
index 000000000..41a929b3a
--- /dev/null
+++ b/drivers/net/ethernet/sunplus/spl2sw_mac.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright Sunplus Technology Co., Ltd.
+ * All rights reserved.
+ */
+
+#ifndef __SPL2SW_MAC_H__
+#define __SPL2SW_MAC_H__
+
+void spl2sw_mac_hw_stop(struct spl2sw_common *comm);
+void spl2sw_mac_hw_start(struct spl2sw_common *comm);
+int spl2sw_mac_addr_add(struct spl2sw_mac *mac);
+int spl2sw_mac_addr_del(struct spl2sw_mac *mac);
+void spl2sw_mac_hw_init(struct spl2sw_common *comm);
+void spl2sw_mac_rx_mode_set(struct spl2sw_mac *mac);
+void spl2sw_mac_init(struct spl2sw_common *comm);
+void spl2sw_mac_soft_reset(struct spl2sw_common *comm);
+
+#endif
diff --git a/drivers/net/ethernet/sunplus/spl2sw_mdio.c b/drivers/net/ethernet/sunplus/spl2sw_mdio.c
new file mode 100644
index 000000000..139ac8f26
--- /dev/null
+++ b/drivers/net/ethernet/sunplus/spl2sw_mdio.c
@@ -0,0 +1,126 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright Sunplus Technology Co., Ltd.
+ * All rights reserved.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/netdevice.h>
+#include <linux/bitfield.h>
+#include <linux/of_mdio.h>
+
+#include "spl2sw_register.h"
+#include "spl2sw_define.h"
+#include "spl2sw_mdio.h"
+
+#define SPL2SW_MDIO_READ_CMD 0x02
+#define SPL2SW_MDIO_WRITE_CMD 0x01
+
+static int spl2sw_mdio_access(struct spl2sw_common *comm, u8 cmd, u8 addr, u8 regnum, u16 wdata)
+{
+ u32 reg, reg2;
+ u32 val;
+ int ret;
+
+ /* Note that addr (of phy) should match either ext_phy0_addr
+ * or ext_phy1_addr, or mdio commands won't be sent out.
+ */
+ reg = readl(comm->l2sw_reg_base + L2SW_MAC_FORCE_MODE);
+ reg &= ~MAC_EXT_PHY0_ADDR;
+ reg |= FIELD_PREP(MAC_EXT_PHY0_ADDR, addr);
+
+ reg2 = FIELD_PREP(MAC_CPU_PHY_WT_DATA, wdata) | FIELD_PREP(MAC_CPU_PHY_CMD, cmd) |
+ FIELD_PREP(MAC_CPU_PHY_REG_ADDR, regnum) | FIELD_PREP(MAC_CPU_PHY_ADDR, addr);
+
+ /* Set ext_phy0_addr and then issue mdio command.
+ * No interrupt is allowed in between.
+ */
+ spin_lock_irq(&comm->mdio_lock);
+ writel(reg, comm->l2sw_reg_base + L2SW_MAC_FORCE_MODE);
+ writel(reg2, comm->l2sw_reg_base + L2SW_PHY_CNTL_REG0);
+ spin_unlock_irq(&comm->mdio_lock);
+
+ ret = read_poll_timeout(readl, val, val & cmd, 1, 1000, true,
+ comm->l2sw_reg_base + L2SW_PHY_CNTL_REG1);
+
+ /* Set ext_phy0_addr back to 31 to prevent
+ * from sending mdio command to phy by
+ * hardware auto-mdio function.
+ */
+ reg = readl(comm->l2sw_reg_base + L2SW_MAC_FORCE_MODE);
+ reg &= ~MAC_EXT_PHY0_ADDR;
+ reg |= FIELD_PREP(MAC_EXT_PHY0_ADDR, 31);
+ writel(reg, comm->l2sw_reg_base + L2SW_MAC_FORCE_MODE);
+
+ if (ret == 0)
+ return val >> 16;
+ else
+ return ret;
+}
+
+static int spl2sw_mii_read(struct mii_bus *bus, int addr, int regnum)
+{
+ struct spl2sw_common *comm = bus->priv;
+
+ if (regnum & MII_ADDR_C45)
+ return -EOPNOTSUPP;
+
+ return spl2sw_mdio_access(comm, SPL2SW_MDIO_READ_CMD, addr, regnum, 0);
+}
+
+static int spl2sw_mii_write(struct mii_bus *bus, int addr, int regnum, u16 val)
+{
+ struct spl2sw_common *comm = bus->priv;
+ int ret;
+
+ if (regnum & MII_ADDR_C45)
+ return -EOPNOTSUPP;
+
+ ret = spl2sw_mdio_access(comm, SPL2SW_MDIO_WRITE_CMD, addr, regnum, val);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+u32 spl2sw_mdio_init(struct spl2sw_common *comm)
+{
+ struct device_node *mdio_np;
+ struct mii_bus *mii_bus;
+ int ret;
+
+ /* Get mdio child node. */
+ mdio_np = of_get_child_by_name(comm->pdev->dev.of_node, "mdio");
+ if (!mdio_np) {
+ dev_err(&comm->pdev->dev, "No mdio child node found!\n");
+ return -ENODEV;
+ }
+
+ /* Allocate and register mdio bus. */
+ mii_bus = devm_mdiobus_alloc(&comm->pdev->dev);
+ if (!mii_bus)
+ return -ENOMEM;
+
+ mii_bus->name = "sunplus_mii_bus";
+ mii_bus->parent = &comm->pdev->dev;
+ mii_bus->priv = comm;
+ mii_bus->read = spl2sw_mii_read;
+ mii_bus->write = spl2sw_mii_write;
+ snprintf(mii_bus->id, MII_BUS_ID_SIZE, "%s-mii", dev_name(&comm->pdev->dev));
+
+ ret = of_mdiobus_register(mii_bus, mdio_np);
+ if (ret) {
+ dev_err(&comm->pdev->dev, "Failed to register mdiobus!\n");
+ return ret;
+ }
+
+ comm->mii_bus = mii_bus;
+ return ret;
+}
+
+void spl2sw_mdio_remove(struct spl2sw_common *comm)
+{
+ if (comm->mii_bus) {
+ mdiobus_unregister(comm->mii_bus);
+ comm->mii_bus = NULL;
+ }
+}
diff --git a/drivers/net/ethernet/sunplus/spl2sw_mdio.h b/drivers/net/ethernet/sunplus/spl2sw_mdio.h
new file mode 100644
index 000000000..8a24c9cae
--- /dev/null
+++ b/drivers/net/ethernet/sunplus/spl2sw_mdio.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright Sunplus Technology Co., Ltd.
+ * All rights reserved.
+ */
+
+#ifndef __SPL2SW_MDIO_H__
+#define __SPL2SW_MDIO_H__
+
+u32 spl2sw_mdio_init(struct spl2sw_common *comm);
+void spl2sw_mdio_remove(struct spl2sw_common *comm);
+
+#endif
diff --git a/drivers/net/ethernet/sunplus/spl2sw_phy.c b/drivers/net/ethernet/sunplus/spl2sw_phy.c
new file mode 100644
index 000000000..404f508a5
--- /dev/null
+++ b/drivers/net/ethernet/sunplus/spl2sw_phy.c
@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright Sunplus Technology Co., Ltd.
+ * All rights reserved.
+ */
+
+#include <linux/netdevice.h>
+#include <linux/bitfield.h>
+#include <linux/of_mdio.h>
+
+#include "spl2sw_register.h"
+#include "spl2sw_define.h"
+#include "spl2sw_phy.h"
+
+static void spl2sw_mii_link_change(struct net_device *ndev)
+{
+ struct spl2sw_mac *mac = netdev_priv(ndev);
+ struct phy_device *phydev = ndev->phydev;
+ struct spl2sw_common *comm = mac->comm;
+ u32 reg;
+
+ reg = readl(comm->l2sw_reg_base + L2SW_MAC_FORCE_MODE);
+
+ if (phydev->link) {
+ reg |= FIELD_PREP(MAC_FORCE_RMII_LINK, mac->lan_port);
+
+ if (phydev->speed == 100) {
+ reg |= FIELD_PREP(MAC_FORCE_RMII_SPD, mac->lan_port);
+ } else {
+ reg &= FIELD_PREP(MAC_FORCE_RMII_SPD, ~mac->lan_port) |
+ ~MAC_FORCE_RMII_SPD;
+ }
+
+ if (phydev->duplex) {
+ reg |= FIELD_PREP(MAC_FORCE_RMII_DPX, mac->lan_port);
+ } else {
+ reg &= FIELD_PREP(MAC_FORCE_RMII_DPX, ~mac->lan_port) |
+ ~MAC_FORCE_RMII_DPX;
+ }
+
+ if (phydev->pause) {
+ reg |= FIELD_PREP(MAC_FORCE_RMII_FC, mac->lan_port);
+ } else {
+ reg &= FIELD_PREP(MAC_FORCE_RMII_FC, ~mac->lan_port) |
+ ~MAC_FORCE_RMII_FC;
+ }
+ } else {
+ reg &= FIELD_PREP(MAC_FORCE_RMII_LINK, ~mac->lan_port) |
+ ~MAC_FORCE_RMII_LINK;
+ }
+
+ writel(reg, comm->l2sw_reg_base + L2SW_MAC_FORCE_MODE);
+
+ phy_print_status(phydev);
+}
+
+int spl2sw_phy_connect(struct spl2sw_common *comm)
+{
+ struct phy_device *phydev;
+ struct net_device *ndev;
+ struct spl2sw_mac *mac;
+ int i;
+
+ for (i = 0; i < MAX_NETDEV_NUM; i++)
+ if (comm->ndev[i]) {
+ ndev = comm->ndev[i];
+ mac = netdev_priv(ndev);
+ phydev = of_phy_connect(ndev, mac->phy_node, spl2sw_mii_link_change,
+ 0, mac->phy_mode);
+ if (!phydev)
+ return -ENODEV;
+
+ phy_support_asym_pause(phydev);
+ phy_attached_info(phydev);
+ }
+
+ return 0;
+}
+
+void spl2sw_phy_remove(struct spl2sw_common *comm)
+{
+ struct net_device *ndev;
+ int i;
+
+ for (i = 0; i < MAX_NETDEV_NUM; i++)
+ if (comm->ndev[i]) {
+ ndev = comm->ndev[i];
+ if (ndev) {
+ phy_disconnect(ndev->phydev);
+ ndev->phydev = NULL;
+ }
+ }
+}
diff --git a/drivers/net/ethernet/sunplus/spl2sw_phy.h b/drivers/net/ethernet/sunplus/spl2sw_phy.h
new file mode 100644
index 000000000..3d051a254
--- /dev/null
+++ b/drivers/net/ethernet/sunplus/spl2sw_phy.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright Sunplus Technology Co., Ltd.
+ * All rights reserved.
+ */
+
+#ifndef __SPL2SW_PHY_H__
+#define __SPL2SW_PHY_H__
+
+int spl2sw_phy_connect(struct spl2sw_common *comm);
+void spl2sw_phy_remove(struct spl2sw_common *comm);
+
+#endif
diff --git a/drivers/net/ethernet/sunplus/spl2sw_register.h b/drivers/net/ethernet/sunplus/spl2sw_register.h
new file mode 100644
index 000000000..9718e2ee2
--- /dev/null
+++ b/drivers/net/ethernet/sunplus/spl2sw_register.h
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright Sunplus Technology Co., Ltd.
+ * All rights reserved.
+ */
+
+#ifndef __SPL2SW_REGISTER_H__
+#define __SPL2SW_REGISTER_H__
+
+/* Register L2SW */
+#define L2SW_SW_INT_STATUS_0 0x0
+#define L2SW_SW_INT_MASK_0 0x4
+#define L2SW_FL_CNTL_TH 0x8
+#define L2SW_CPU_FL_CNTL_TH 0xc
+#define L2SW_PRI_FL_CNTL 0x10
+#define L2SW_VLAN_PRI_TH 0x14
+#define L2SW_EN_TOS_BUS 0x18
+#define L2SW_TOS_MAP0 0x1c
+#define L2SW_TOS_MAP1 0x20
+#define L2SW_TOS_MAP2 0x24
+#define L2SW_TOS_MAP3 0x28
+#define L2SW_TOS_MAP4 0x2c
+#define L2SW_TOS_MAP5 0x30
+#define L2SW_TOS_MAP6 0x34
+#define L2SW_TOS_MAP7 0x38
+#define L2SW_GLOBAL_QUE_STATUS 0x3c
+#define L2SW_ADDR_TBL_SRCH 0x40
+#define L2SW_ADDR_TBL_ST 0x44
+#define L2SW_MAC_AD_SER0 0x48
+#define L2SW_MAC_AD_SER1 0x4c
+#define L2SW_WT_MAC_AD0 0x50
+#define L2SW_W_MAC_15_0 0x54
+#define L2SW_W_MAC_47_16 0x58
+#define L2SW_PVID_CONFIG0 0x5c
+#define L2SW_PVID_CONFIG1 0x60
+#define L2SW_VLAN_MEMSET_CONFIG0 0x64
+#define L2SW_VLAN_MEMSET_CONFIG1 0x68
+#define L2SW_PORT_ABILITY 0x6c
+#define L2SW_PORT_ST 0x70
+#define L2SW_CPU_CNTL 0x74
+#define L2SW_PORT_CNTL0 0x78
+#define L2SW_PORT_CNTL1 0x7c
+#define L2SW_PORT_CNTL2 0x80
+#define L2SW_SW_GLB_CNTL 0x84
+#define L2SW_L2SW_SW_RESET 0x88
+#define L2SW_LED_PORT0 0x8c
+#define L2SW_LED_PORT1 0x90
+#define L2SW_LED_PORT2 0x94
+#define L2SW_LED_PORT3 0x98
+#define L2SW_LED_PORT4 0x9c
+#define L2SW_WATCH_DOG_TRIG_RST 0xa0
+#define L2SW_WATCH_DOG_STOP_CPU 0xa4
+#define L2SW_PHY_CNTL_REG0 0xa8
+#define L2SW_PHY_CNTL_REG1 0xac
+#define L2SW_MAC_FORCE_MODE 0xb0
+#define L2SW_VLAN_GROUP_CONFIG0 0xb4
+#define L2SW_VLAN_GROUP_CONFIG1 0xb8
+#define L2SW_FLOW_CTRL_TH3 0xbc
+#define L2SW_QUEUE_STATUS_0 0xc0
+#define L2SW_DEBUG_CNTL 0xc4
+#define L2SW_RESERVED_1 0xc8
+#define L2SW_MEM_TEST_INFO 0xcc
+#define L2SW_SW_INT_STATUS_1 0xd0
+#define L2SW_SW_INT_MASK_1 0xd4
+#define L2SW_SW_GLOBAL_SIGNAL 0xd8
+
+#define L2SW_CPU_TX_TRIG 0x208
+#define L2SW_TX_HBASE_ADDR_0 0x20c
+#define L2SW_TX_LBASE_ADDR_0 0x210
+#define L2SW_RX_HBASE_ADDR_0 0x214
+#define L2SW_RX_LBASE_ADDR_0 0x218
+#define L2SW_TX_HW_ADDR_0 0x21c
+#define L2SW_TX_LW_ADDR_0 0x220
+#define L2SW_RX_HW_ADDR_0 0x224
+#define L2SW_RX_LW_ADDR_0 0x228
+#define L2SW_CPU_PORT_CNTL_REG_0 0x22c
+#define L2SW_TX_HBASE_ADDR_1 0x230
+#define L2SW_TX_LBASE_ADDR_1 0x234
+#define L2SW_RX_HBASE_ADDR_1 0x238
+#define L2SW_RX_LBASE_ADDR_1 0x23c
+#define L2SW_TX_HW_ADDR_1 0x240
+#define L2SW_TX_LW_ADDR_1 0x244
+#define L2SW_RX_HW_ADDR_1 0x248
+#define L2SW_RX_LW_ADDR_1 0x24c
+#define L2SW_CPU_PORT_CNTL_REG_1 0x250
+
+#endif
--
2.25.1
\
 
 \ /
  Last update: 2022-05-02 15:24    [W:0.151 / U:1.224 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site