diff options
Diffstat (limited to 'drivers/net/ethernet/sunplus/spl2sw_mac.c')
| -rw-r--r-- | drivers/net/ethernet/sunplus/spl2sw_mac.c | 274 |
1 files changed, 274 insertions, 0 deletions
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); +} |