1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2022 Schneider Electric 4 * 5 * Clément Léger <clement.leger@bootlin.com> 6 */ 7 8 #include <linux/clk.h> 9 #include <linux/debugfs.h> 10 #include <linux/kernel.h> 11 #include <linux/module.h> 12 #include <linux/of.h> 13 #include <linux/of_mdio.h> 14 #include <linux/platform_device.h> 15 #include <linux/pcs-rzn1-miic.h> 16 #include <net/dsa.h> 17 18 #define A5PSW_REVISION 0x0 19 #define A5PSW_PORT_OFFSET(port) (0x400 * (port)) 20 21 #define A5PSW_PORT_ENA 0x8 22 #define A5PSW_PORT_ENA_RX_SHIFT 16 23 #define A5PSW_PORT_ENA_TX_RX(port) (BIT((port) + A5PSW_PORT_ENA_RX_SHIFT) | \ 24 BIT(port)) 25 #define A5PSW_UCAST_DEF_MASK 0xC 26 27 #define A5PSW_VLAN_VERIFY 0x10 28 #define A5PSW_VLAN_VERI_SHIFT 0 29 #define A5PSW_VLAN_DISC_SHIFT 16 30 31 #define A5PSW_BCAST_DEF_MASK 0x14 32 #define A5PSW_MCAST_DEF_MASK 0x18 33 34 #define A5PSW_INPUT_LEARN 0x1C 35 #define A5PSW_INPUT_LEARN_DIS(p) BIT((p) + 16) 36 #define A5PSW_INPUT_LEARN_BLOCK(p) BIT(p) 37 38 #define A5PSW_MGMT_CFG 0x20 39 #define A5PSW_MGMT_CFG_DISCARD BIT(7) 40 41 #define A5PSW_MODE_CFG 0x24 42 #define A5PSW_MODE_STATS_RESET BIT(31) 43 44 #define A5PSW_VLAN_IN_MODE 0x28 45 #define A5PSW_VLAN_IN_MODE_PORT_SHIFT(port) ((port) * 2) 46 #define A5PSW_VLAN_IN_MODE_PORT(port) (GENMASK(1, 0) << \ 47 A5PSW_VLAN_IN_MODE_PORT_SHIFT(port)) 48 #define A5PSW_VLAN_IN_MODE_SINGLE_PASSTHROUGH 0x0 49 #define A5PSW_VLAN_IN_MODE_SINGLE_REPLACE 0x1 50 #define A5PSW_VLAN_IN_MODE_TAG_ALWAYS 0x2 51 52 #define A5PSW_VLAN_OUT_MODE 0x2C 53 #define A5PSW_VLAN_OUT_MODE_PORT(port) (GENMASK(1, 0) << ((port) * 2)) 54 #define A5PSW_VLAN_OUT_MODE_DIS 0x0 55 #define A5PSW_VLAN_OUT_MODE_STRIP 0x1 56 #define A5PSW_VLAN_OUT_MODE_TAG_THROUGH 0x2 57 #define A5PSW_VLAN_OUT_MODE_TRANSPARENT 0x3 58 59 #define A5PSW_VLAN_IN_MODE_ENA 0x30 60 #define A5PSW_VLAN_TAG_ID 0x34 61 62 #define A5PSW_SYSTEM_TAGINFO(port) (0x200 + A5PSW_PORT_OFFSET(port)) 63 64 #define A5PSW_AUTH_PORT(port) (0x240 + 4 * (port)) 65 #define A5PSW_AUTH_PORT_AUTHORIZED BIT(0) 66 67 #define A5PSW_VLAN_RES(entry) (0x280 + 4 * (entry)) 68 #define A5PSW_VLAN_RES_WR_PORTMASK BIT(30) 69 #define A5PSW_VLAN_RES_WR_TAGMASK BIT(29) 70 #define A5PSW_VLAN_RES_RD_TAGMASK BIT(28) 71 #define A5PSW_VLAN_RES_ID GENMASK(16, 5) 72 #define A5PSW_VLAN_RES_PORTMASK GENMASK(4, 0) 73 74 #define A5PSW_RXMATCH_CONFIG(port) (0x3e80 + 4 * (port)) 75 #define A5PSW_RXMATCH_CONFIG_PATTERN(p) BIT(p) 76 77 #define A5PSW_PATTERN_CTRL(p) (0x3eb0 + 4 * (p)) 78 #define A5PSW_PATTERN_CTRL_MGMTFWD BIT(1) 79 80 #define A5PSW_LK_CTRL 0x400 81 #define A5PSW_LK_ADDR_CTRL_BLOCKING BIT(0) 82 #define A5PSW_LK_ADDR_CTRL_LEARNING BIT(1) 83 #define A5PSW_LK_ADDR_CTRL_AGEING BIT(2) 84 #define A5PSW_LK_ADDR_CTRL_ALLOW_MIGR BIT(3) 85 #define A5PSW_LK_ADDR_CTRL_CLEAR_TABLE BIT(6) 86 87 #define A5PSW_LK_ADDR_CTRL 0x408 88 #define A5PSW_LK_ADDR_CTRL_BUSY BIT(31) 89 #define A5PSW_LK_ADDR_CTRL_DELETE_PORT BIT(30) 90 #define A5PSW_LK_ADDR_CTRL_CLEAR BIT(29) 91 #define A5PSW_LK_ADDR_CTRL_LOOKUP BIT(28) 92 #define A5PSW_LK_ADDR_CTRL_WAIT BIT(27) 93 #define A5PSW_LK_ADDR_CTRL_READ BIT(26) 94 #define A5PSW_LK_ADDR_CTRL_WRITE BIT(25) 95 #define A5PSW_LK_ADDR_CTRL_ADDRESS GENMASK(12, 0) 96 97 #define A5PSW_LK_DATA_LO 0x40C 98 #define A5PSW_LK_DATA_HI 0x410 99 #define A5PSW_LK_DATA_HI_VALID BIT(16) 100 #define A5PSW_LK_DATA_HI_PORT BIT(16) 101 102 #define A5PSW_LK_LEARNCOUNT 0x418 103 #define A5PSW_LK_LEARNCOUNT_COUNT GENMASK(13, 0) 104 #define A5PSW_LK_LEARNCOUNT_MODE GENMASK(31, 30) 105 #define A5PSW_LK_LEARNCOUNT_MODE_SET 0x0 106 #define A5PSW_LK_LEARNCOUNT_MODE_INC 0x1 107 #define A5PSW_LK_LEARNCOUNT_MODE_DEC 0x2 108 109 #define A5PSW_MGMT_TAG_CFG 0x480 110 #define A5PSW_MGMT_TAG_CFG_TAGFIELD GENMASK(31, 16) 111 #define A5PSW_MGMT_TAG_CFG_ALL_FRAMES BIT(1) 112 #define A5PSW_MGMT_TAG_CFG_ENABLE BIT(0) 113 114 #define A5PSW_LK_AGETIME 0x41C 115 #define A5PSW_LK_AGETIME_MASK GENMASK(23, 0) 116 117 #define A5PSW_MDIO_CFG_STATUS 0x700 118 #define A5PSW_MDIO_CFG_STATUS_CLKDIV GENMASK(15, 7) 119 #define A5PSW_MDIO_CFG_STATUS_READERR BIT(1) 120 #define A5PSW_MDIO_CFG_STATUS_BUSY BIT(0) 121 122 #define A5PSW_MDIO_COMMAND 0x704 123 /* Register is named TRAININIT in datasheet and should be set when reading */ 124 #define A5PSW_MDIO_COMMAND_READ BIT(15) 125 #define A5PSW_MDIO_COMMAND_PHY_ADDR GENMASK(9, 5) 126 #define A5PSW_MDIO_COMMAND_REG_ADDR GENMASK(4, 0) 127 128 #define A5PSW_MDIO_DATA 0x708 129 #define A5PSW_MDIO_DATA_MASK GENMASK(15, 0) 130 131 #define A5PSW_CMD_CFG(port) (0x808 + A5PSW_PORT_OFFSET(port)) 132 #define A5PSW_CMD_CFG_CNTL_FRM_ENA BIT(23) 133 #define A5PSW_CMD_CFG_SW_RESET BIT(13) 134 #define A5PSW_CMD_CFG_TX_CRC_APPEND BIT(11) 135 #define A5PSW_CMD_CFG_HD_ENA BIT(10) 136 #define A5PSW_CMD_CFG_PAUSE_IGNORE BIT(8) 137 #define A5PSW_CMD_CFG_CRC_FWD BIT(6) 138 #define A5PSW_CMD_CFG_ETH_SPEED BIT(3) 139 #define A5PSW_CMD_CFG_RX_ENA BIT(1) 140 #define A5PSW_CMD_CFG_TX_ENA BIT(0) 141 142 #define A5PSW_FRM_LENGTH(port) (0x814 + A5PSW_PORT_OFFSET(port)) 143 #define A5PSW_FRM_LENGTH_MASK GENMASK(13, 0) 144 145 #define A5PSW_STATUS(port) (0x840 + A5PSW_PORT_OFFSET(port)) 146 147 #define A5PSW_STATS_HIWORD 0x900 148 149 /* Stats */ 150 #define A5PSW_aFramesTransmittedOK 0x868 151 #define A5PSW_aFramesReceivedOK 0x86C 152 #define A5PSW_aFrameCheckSequenceErrors 0x870 153 #define A5PSW_aAlignmentErrors 0x874 154 #define A5PSW_aOctetsTransmittedOK 0x878 155 #define A5PSW_aOctetsReceivedOK 0x87C 156 #define A5PSW_aTxPAUSEMACCtrlFrames 0x880 157 #define A5PSW_aRxPAUSEMACCtrlFrames 0x884 158 /* If */ 159 #define A5PSW_ifInErrors 0x888 160 #define A5PSW_ifOutErrors 0x88C 161 #define A5PSW_ifInUcastPkts 0x890 162 #define A5PSW_ifInMulticastPkts 0x894 163 #define A5PSW_ifInBroadcastPkts 0x898 164 #define A5PSW_ifOutDiscards 0x89C 165 #define A5PSW_ifOutUcastPkts 0x8A0 166 #define A5PSW_ifOutMulticastPkts 0x8A4 167 #define A5PSW_ifOutBroadcastPkts 0x8A8 168 /* Ether */ 169 #define A5PSW_etherStatsDropEvents 0x8AC 170 #define A5PSW_etherStatsOctets 0x8B0 171 #define A5PSW_etherStatsPkts 0x8B4 172 #define A5PSW_etherStatsUndersizePkts 0x8B8 173 #define A5PSW_etherStatsOversizePkts 0x8BC 174 #define A5PSW_etherStatsPkts64Octets 0x8C0 175 #define A5PSW_etherStatsPkts65to127Octets 0x8C4 176 #define A5PSW_etherStatsPkts128to255Octets 0x8C8 177 #define A5PSW_etherStatsPkts256to511Octets 0x8CC 178 #define A5PSW_etherStatsPkts512to1023Octets 0x8D0 179 #define A5PSW_etherStatsPkts1024to1518Octets 0x8D4 180 #define A5PSW_etherStatsPkts1519toXOctets 0x8D8 181 #define A5PSW_etherStatsJabbers 0x8DC 182 #define A5PSW_etherStatsFragments 0x8E0 183 184 #define A5PSW_VLANReceived 0x8E8 185 #define A5PSW_VLANTransmitted 0x8EC 186 187 #define A5PSW_aDeferred 0x910 188 #define A5PSW_aMultipleCollisions 0x914 189 #define A5PSW_aSingleCollisions 0x918 190 #define A5PSW_aLateCollisions 0x91C 191 #define A5PSW_aExcessiveCollisions 0x920 192 #define A5PSW_aCarrierSenseErrors 0x924 193 194 #define A5PSW_VLAN_TAG(prio, id) (((prio) << 12) | (id)) 195 #define A5PSW_PORTS_NUM 5 196 #define A5PSW_CPU_PORT (A5PSW_PORTS_NUM - 1) 197 #define A5PSW_MDIO_DEF_FREQ 2500000 198 #define A5PSW_MDIO_TIMEOUT 100 199 #define A5PSW_JUMBO_LEN (10 * SZ_1K) 200 #define A5PSW_MDIO_CLK_DIV_MIN 5 201 #define A5PSW_TAG_LEN 8 202 #define A5PSW_VLAN_COUNT 32 203 204 /* Ensure enough space for 2 VLAN tags */ 205 #define A5PSW_EXTRA_MTU_LEN (A5PSW_TAG_LEN + 8) 206 #define A5PSW_MAX_MTU (A5PSW_JUMBO_LEN - A5PSW_EXTRA_MTU_LEN) 207 208 #define A5PSW_PATTERN_MGMTFWD 0 209 210 #define A5PSW_LK_BUSY_USEC_POLL 10 211 #define A5PSW_CTRL_TIMEOUT 1000 212 #define A5PSW_TABLE_ENTRIES 8192 213 214 struct fdb_entry { 215 u8 mac[ETH_ALEN]; 216 u16 valid:1; 217 u16 is_static:1; 218 u16 prio:3; 219 u16 port_mask:5; 220 u16 reserved:6; 221 } __packed; 222 223 union lk_data { 224 struct { 225 u32 lo; 226 u32 hi; 227 }; 228 struct fdb_entry entry; 229 }; 230 231 /** 232 * struct a5psw - switch struct 233 * @base: Base address of the switch 234 * @hclk: hclk_switch clock 235 * @clk: clk_switch clock 236 * @dev: Device associated to the switch 237 * @mii_bus: MDIO bus struct 238 * @mdio_freq: MDIO bus frequency requested 239 * @pcs: Array of PCS connected to the switch ports (not for the CPU) 240 * @ds: DSA switch struct 241 * @stats_lock: lock to access statistics (shared HI counter) 242 * @lk_lock: Lock for the lookup table 243 * @reg_lock: Lock for register read-modify-write operation 244 * @bridged_ports: Mask of ports that are bridged and should be flooded 245 * @br_dev: Bridge net device 246 */ 247 struct a5psw { 248 void __iomem *base; 249 struct clk *hclk; 250 struct clk *clk; 251 struct device *dev; 252 struct mii_bus *mii_bus; 253 struct phylink_pcs *pcs[A5PSW_PORTS_NUM - 1]; 254 struct dsa_switch ds; 255 struct mutex lk_lock; 256 spinlock_t reg_lock; 257 u32 bridged_ports; 258 struct net_device *br_dev; 259 }; 260