drivers/net/dsa/lantiq_gswip.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Lantiq / Intel GSWIP switch driver for VRX200, xRX300 and xRX330 SoCs
   4  *
   5  * Copyright (C) 2010 Lantiq Deutschland
   6  * Copyright (C) 2012 John Crispin <john@phrozen.org>
   7  * Copyright (C) 2017 - 2019 Hauke Mehrtens <hauke@hauke-m.de>
   8  *
   9  * The VLAN and bridge model the GSWIP hardware uses does not directly
  10  * matches the model DSA uses.
  11  *
  12  * The hardware has 64 possible table entries for bridges with one VLAN
  13  * ID, one flow id and a list of ports for each bridge. All entries which
  14  * match the same flow ID are combined in the mac learning table, they
  15  * act as one global bridge.
  16  * The hardware does not support VLAN filter on the port, but on the
  17  * bridge, this driver converts the DSA model to the hardware.
  18  *
  19  * The CPU gets all the exception frames which do not match any forwarding
  20  * rule and the CPU port is also added to all bridges. This makes it possible
  21  * to handle all the special cases easily in software.
  22  * At the initialization the driver allocates one bridge table entry for
  23  * each switch port which is used when the port is used without an
  24  * explicit bridge. This prevents the frames from being forwarded
  25  * between all LAN ports by default.
  26  */
  27
  28 #include <linux/clk.h>
  29 #include <linux/delay.h>
  30 #include <linux/etherdevice.h>
  31 #include <linux/firmware.h>
  32 #include <linux/if_bridge.h>
  33 #include <linux/if_vlan.h>
  34 #include <linux/iopoll.h>
  35 #include <linux/mfd/syscon.h>
  36 #include <linux/module.h>
  37 #include <linux/of_mdio.h>
  38 #include <linux/of_net.h>
  39 #include <linux/of_platform.h>
  40 #include <linux/phy.h>
  41 #include <linux/phylink.h>
  42 #include <linux/platform_device.h>
  43 #include <linux/regmap.h>
  44 #include <linux/reset.h>
  45 #include <net/dsa.h>
  46 #include <dt-bindings/mips/lantiq_rcu_gphy.h>
  47
  48 #include "lantiq_pce.h"
  49
  50 /* GSWIP MDIO Registers */
  51 #define GSWIP_MDIO_GLOB                 0x00
  52 #define  GSWIP_MDIO_GLOB_ENABLE         BIT(15)
  53 #define GSWIP_MDIO_CTRL                 0x08
  54 #define  GSWIP_MDIO_CTRL_BUSY           BIT(12)
  55 #define  GSWIP_MDIO_CTRL_RD             BIT(11)
  56 #define  GSWIP_MDIO_CTRL_WR             BIT(10)
  57 #define  GSWIP_MDIO_CTRL_PHYAD_MASK     0x1f
  58 #define  GSWIP_MDIO_CTRL_PHYAD_SHIFT    5
  59 #define  GSWIP_MDIO_CTRL_REGAD_MASK     0x1f
  60 #define GSWIP_MDIO_READ                 0x09
  61 #define GSWIP_MDIO_WRITE                0x0A
  62 #define GSWIP_MDIO_MDC_CFG0             0x0B
  63 #define GSWIP_MDIO_MDC_CFG1             0x0C
  64 #define GSWIP_MDIO_PHYp(p)              (0x15 - (p))
  65 #define  GSWIP_MDIO_PHY_LINK_MASK       0x6000
  66 #define  GSWIP_MDIO_PHY_LINK_AUTO       0x0000
  67 #define  GSWIP_MDIO_PHY_LINK_DOWN       0x4000
  68 #define  GSWIP_MDIO_PHY_LINK_UP         0x2000
  69 #define  GSWIP_MDIO_PHY_SPEED_MASK      0x1800
  70 #define  GSWIP_MDIO_PHY_SPEED_AUTO      0x1800
  71 #define  GSWIP_MDIO_PHY_SPEED_M10       0x0000
  72 #define  GSWIP_MDIO_PHY_SPEED_M100      0x0800
  73 #define  GSWIP_MDIO_PHY_SPEED_G1        0x1000
  74 #define  GSWIP_MDIO_PHY_FDUP_MASK       0x0600
  75 #define  GSWIP_MDIO_PHY_FDUP_AUTO       0x0000
  76 #define  GSWIP_MDIO_PHY_FDUP_EN         0x0200
  77 #define  GSWIP_MDIO_PHY_FDUP_DIS        0x0600
  78 #define  GSWIP_MDIO_PHY_FCONTX_MASK     0x0180
  79 #define  GSWIP_MDIO_PHY_FCONTX_AUTO     0x0000
  80 #define  GSWIP_MDIO_PHY_FCONTX_EN       0x0100
  81 #define  GSWIP_MDIO_PHY_FCONTX_DIS      0x0180
  82 #define  GSWIP_MDIO_PHY_FCONRX_MASK     0x0060
  83 #define  GSWIP_MDIO_PHY_FCONRX_AUTO     0x0000
  84 #define  GSWIP_MDIO_PHY_FCONRX_EN       0x0020
  85 #define  GSWIP_MDIO_PHY_FCONRX_DIS      0x0060
  86 #define  GSWIP_MDIO_PHY_ADDR_MASK       0x001f
  87 #define  GSWIP_MDIO_PHY_MASK            (GSWIP_MDIO_PHY_ADDR_MASK | \
  88                                          GSWIP_MDIO_PHY_FCONRX_MASK | \
  89                                          GSWIP_MDIO_PHY_FCONTX_MASK | \
  90                                          GSWIP_MDIO_PHY_LINK_MASK | \
  91                                          GSWIP_MDIO_PHY_SPEED_MASK | \
  92                                          GSWIP_MDIO_PHY_FDUP_MASK)
  93
  94 /* GSWIP MII Registers */
  95 #define GSWIP_MII_CFGp(p)               (0x2 * (p))
  96 #define  GSWIP_MII_CFG_RESET            BIT(15)
  97 #define  GSWIP_MII_CFG_EN               BIT(14)
  98 #define  GSWIP_MII_CFG_ISOLATE          BIT(13)
  99 #define  GSWIP_MII_CFG_LDCLKDIS         BIT(12)
 100 #define  GSWIP_MII_CFG_RGMII_IBS        BIT(8)
 101 #define  GSWIP_MII_CFG_RMII_CLK         BIT(7)
 102 #define  GSWIP_MII_CFG_MODE_MIIP        0x0
 103 #define  GSWIP_MII_CFG_MODE_MIIM        0x1
 104 #define  GSWIP_MII_CFG_MODE_RMIIP       0x2
 105 #define  GSWIP_MII_CFG_MODE_RMIIM       0x3
 106 #define  GSWIP_MII_CFG_MODE_RGMII       0x4
 107 #define  GSWIP_MII_CFG_MODE_GMII        0x9
 108 #define  GSWIP_MII_CFG_MODE_MASK        0xf
 109 #define  GSWIP_MII_CFG_RATE_M2P5        0x00
 110 #define  GSWIP_MII_CFG_RATE_M25 0x10
 111 #define  GSWIP_MII_CFG_RATE_M125        0x20
 112 #define  GSWIP_MII_CFG_RATE_M50 0x30
 113 #define  GSWIP_MII_CFG_RATE_AUTO        0x40
 114 #define  GSWIP_MII_CFG_RATE_MASK        0x70
 115 #define GSWIP_MII_PCDU0                 0x01
 116 #define GSWIP_MII_PCDU1                 0x03
 117 #define GSWIP_MII_PCDU5                 0x05
 118 #define  GSWIP_MII_PCDU_TXDLY_MASK      GENMASK(2, 0)
 119 #define  GSWIP_MII_PCDU_RXDLY_MASK      GENMASK(9, 7)
 120
 121 /* GSWIP Core Registers */
 122 #define GSWIP_SWRES                     0x000
 123 #define  GSWIP_SWRES_R1                 BIT(1)  /* GSWIP Software reset */
 124 #define  GSWIP_SWRES_R0                 BIT(0)  /* GSWIP Hardware reset */
 125 #define GSWIP_VERSION                   0x013
 126 #define  GSWIP_VERSION_REV_SHIFT        0
 127 #define  GSWIP_VERSION_REV_MASK         GENMASK(7, 0)
 128 #define  GSWIP_VERSION_MOD_SHIFT        8
 129 #define  GSWIP_VERSION_MOD_MASK         GENMASK(15, 8)
 130 #define   GSWIP_VERSION_2_0             0x100
 131 #define   GSWIP_VERSION_2_1             0x021
 132 #define   GSWIP_VERSION_2_2             0x122
 133 #define   GSWIP_VERSION_2_2_ETC         0x022
 134
 135 #define GSWIP_BM_RAM_VAL(x)             (0x043 - (x))
 136 #define GSWIP_BM_RAM_ADDR               0x044
 137 #define GSWIP_BM_RAM_CTRL               0x045
 138 #define  GSWIP_BM_RAM_CTRL_BAS          BIT(15)
 139 #define  GSWIP_BM_RAM_CTRL_OPMOD        BIT(5)
 140 #define  GSWIP_BM_RAM_CTRL_ADDR_MASK    GENMASK(4, 0)
 141 #define GSWIP_BM_QUEUE_GCTRL            0x04A
 142 #define  GSWIP_BM_QUEUE_GCTRL_GL_MOD    BIT(10)
 143 /* buffer management Port Configuration Register */
 144 #define GSWIP_BM_PCFGp(p)               (0x080 + ((p) * 2))
 145 #define  GSWIP_BM_PCFG_CNTEN            BIT(0)  /* RMON Counter Enable */
 146 #define  GSWIP_BM_PCFG_IGCNT            BIT(1)  /* Ingres Special Tag RMON count */
 147 /* buffer management Port Control Register */
 148 #define GSWIP_BM_RMON_CTRLp(p)          (0x81 + ((p) * 2))
 149 #define  GSWIP_BM_CTRL_RMON_RAM1_RES    BIT(0)  /* Software Reset for RMON RAM 1 */
 150 #define  GSWIP_BM_CTRL_RMON_RAM2_RES    BIT(1)  /* Software Reset for RMON RAM 2 */
 151
 152 /* PCE */
 153 #define GSWIP_PCE_TBL_KEY(x)            (0x447 - (x))
 154 #define GSWIP_PCE_TBL_MASK              0x448
 155 #define GSWIP_PCE_TBL_VAL(x)            (0x44D - (x))
 156 #define GSWIP_PCE_TBL_ADDR              0x44E
 157 #define GSWIP_PCE_TBL_CTRL              0x44F
 158 #define  GSWIP_PCE_TBL_CTRL_BAS         BIT(15)
 159 #define  GSWIP_PCE_TBL_CTRL_TYPE        BIT(13)
 160 #define  GSWIP_PCE_TBL_CTRL_VLD         BIT(12)
 161 #define  GSWIP_PCE_TBL_CTRL_KEYFORM     BIT(11)
 162 #define  GSWIP_PCE_TBL_CTRL_GMAP_MASK   GENMASK(10, 7)
 163 #define  GSWIP_PCE_TBL_CTRL_OPMOD_MASK  GENMASK(6, 5)
 164 #define  GSWIP_PCE_TBL_CTRL_OPMOD_ADRD  0x00
 165 #define  GSWIP_PCE_TBL_CTRL_OPMOD_ADWR  0x20
 166 #define  GSWIP_PCE_TBL_CTRL_OPMOD_KSRD  0x40
 167 #define  GSWIP_PCE_TBL_CTRL_OPMOD_KSWR  0x60
 168 #define  GSWIP_PCE_TBL_CTRL_ADDR_MASK   GENMASK(4, 0)
 169 #define GSWIP_PCE_PMAP1                 0x453   /* Monitoring port map */
 170 #define GSWIP_PCE_PMAP2                 0x454   /* Default Multicast port map */
 171 #define GSWIP_PCE_PMAP3                 0x455   /* Default Unknown Unicast port map */
 172 #define GSWIP_PCE_GCTRL_0               0x456
 173 #define  GSWIP_PCE_GCTRL_0_MTFL         BIT(0)  /* MAC Table Flushing */
 174 #define  GSWIP_PCE_GCTRL_0_MC_VALID     BIT(3)
 175 #define  GSWIP_PCE_GCTRL_0_VLAN         BIT(14) /* VLAN aware Switching */
 176 #define GSWIP_PCE_GCTRL_1               0x457
 177 #define  GSWIP_PCE_GCTRL_1_MAC_GLOCK    BIT(2)  /* MAC Address table lock */
 178 #define  GSWIP_PCE_GCTRL_1_MAC_GLOCK_MOD        BIT(3) /* Mac address table lock forwarding mode */
 179 #define GSWIP_PCE_PCTRL_0p(p)           (0x480 + ((p) * 0xA))
 180 #define  GSWIP_PCE_PCTRL_0_TVM          BIT(5)  /* Transparent VLAN mode */
 181 #define  GSWIP_PCE_PCTRL_0_VREP         BIT(6)  /* VLAN Replace Mode */
 182 #define  GSWIP_PCE_PCTRL_0_INGRESS      BIT(11) /* Accept special tag in ingress */
 183 #define  GSWIP_PCE_PCTRL_0_PSTATE_LISTEN        0x0
 184 #define  GSWIP_PCE_PCTRL_0_PSTATE_RX            0x1
 185 #define  GSWIP_PCE_PCTRL_0_PSTATE_TX            0x2
 186 #define  GSWIP_PCE_PCTRL_0_PSTATE_LEARNING      0x3
 187 #define  GSWIP_PCE_PCTRL_0_PSTATE_FORWARDING    0x7
 188 #define  GSWIP_PCE_PCTRL_0_PSTATE_MASK  GENMASK(2, 0)
 189 #define GSWIP_PCE_VCTRL(p)              (0x485 + ((p) * 0xA))
 190 #define  GSWIP_PCE_VCTRL_UVR            BIT(0)  /* Unknown VLAN Rule */
 191 #define  GSWIP_PCE_VCTRL_VIMR           BIT(3)  /* VLAN Ingress Member violation rule */
 192 #define  GSWIP_PCE_VCTRL_VEMR           BIT(4)  /* VLAN Egress Member violation rule */
 193 #define  GSWIP_PCE_VCTRL_VSR            BIT(5)  /* VLAN Security */
 194 #define  GSWIP_PCE_VCTRL_VID0           BIT(6)  /* Priority Tagged Rule */
 195 #define GSWIP_PCE_DEFPVID(p)            (0x486 + ((p) * 0xA))
 196
 197 #define GSWIP_MAC_FLEN                  0x8C5
 198 #define GSWIP_MAC_CTRL_0p(p)            (0x903 + ((p) * 0xC))
 199 #define  GSWIP_MAC_CTRL_0_PADEN         BIT(8)
 200 #define  GSWIP_MAC_CTRL_0_FCS_EN        BIT(7)
 201 #define  GSWIP_MAC_CTRL_0_FCON_MASK     0x0070
 202 #define  GSWIP_MAC_CTRL_0_FCON_AUTO     0x0000
 203 #define  GSWIP_MAC_CTRL_0_FCON_RX       0x0010
 204 #define  GSWIP_MAC_CTRL_0_FCON_TX       0x0020
 205 #define  GSWIP_MAC_CTRL_0_FCON_RXTX     0x0030
 206 #define  GSWIP_MAC_CTRL_0_FCON_NONE     0x0040
 207 #define  GSWIP_MAC_CTRL_0_FDUP_MASK     0x000C
 208 #define  GSWIP_MAC_CTRL_0_FDUP_AUTO     0x0000
 209 #define  GSWIP_MAC_CTRL_0_FDUP_EN       0x0004
 210 #define  GSWIP_MAC_CTRL_0_FDUP_DIS      0x000C
 211 #define  GSWIP_MAC_CTRL_0_GMII_MASK     0x0003
 212 #define  GSWIP_MAC_CTRL_0_GMII_AUTO     0x0000
 213 #define  GSWIP_MAC_CTRL_0_GMII_MII      0x0001
 214 #define  GSWIP_MAC_CTRL_0_GMII_RGMII    0x0002
 215 #define GSWIP_MAC_CTRL_2p(p)            (0x905 + ((p) * 0xC))
 216 #define GSWIP_MAC_CTRL_2_MLEN           BIT(3) /* Maximum Untagged Frame Lnegth */
 217
 218 /* Ethernet Switch Fetch DMA Port Control Register */
 219 #define GSWIP_FDMA_PCTRLp(p)            (0xA80 + ((p) * 0x6))
 220 #define  GSWIP_FDMA_PCTRL_EN            BIT(0)  /* FDMA Port Enable */
 221 #define  GSWIP_FDMA_PCTRL_STEN          BIT(1)  /* Special Tag Insertion Enable */
 222 #define  GSWIP_FDMA_PCTRL_VLANMOD_MASK  GENMASK(4, 3)   /* VLAN Modification Control */
 223 #define  GSWIP_FDMA_PCTRL_VLANMOD_SHIFT 3       /* VLAN Modification Control */
 224 #define  GSWIP_FDMA_PCTRL_VLANMOD_DIS   (0x0 << GSWIP_FDMA_PCTRL_VLANMOD_SHIFT)
 225 #define  GSWIP_FDMA_PCTRL_VLANMOD_PRIO  (0x1 << GSWIP_FDMA_PCTRL_VLANMOD_SHIFT)
 226 #define  GSWIP_FDMA_PCTRL_VLANMOD_ID    (0x2 << GSWIP_FDMA_PCTRL_VLANMOD_SHIFT)
 227 #define  GSWIP_FDMA_PCTRL_VLANMOD_BOTH  (0x3 << GSWIP_FDMA_PCTRL_VLANMOD_SHIFT)
 228
 229 /* Ethernet Switch Store DMA Port Control Register */
 230 #define GSWIP_SDMA_PCTRLp(p)            (0xBC0 + ((p) * 0x6))
 231 #define  GSWIP_SDMA_PCTRL_EN            BIT(0)  /* SDMA Port Enable */
 232 #define  GSWIP_SDMA_PCTRL_FCEN          BIT(1)  /* Flow Control Enable */
 233 #define  GSWIP_SDMA_PCTRL_PAUFWD        BIT(1)  /* Pause Frame Forwarding */
 234
 235 #define GSWIP_TABLE_ACTIVE_VLAN         0x01
 236 #define GSWIP_TABLE_VLAN_MAPPING        0x02
 237 #define GSWIP_TABLE_MAC_BRIDGE          0x0b
 238 #define  GSWIP_TABLE_MAC_BRIDGE_STATIC  0x01    /* Static not, aging entry */
 239
 240 #define XRX200_GPHY_FW_ALIGN    (16 * 1024)
 241
 242 struct gswip_hw_info {
 243         int max_ports;
 244         int cpu_port;
 245         const struct dsa_switch_ops *ops;
 246 };
 247
 248 struct xway_gphy_match_data {
 249         char *fe_firmware_name;
 250         char *ge_firmware_name;
 251 };
 252
 253 struct gswip_gphy_fw {
 254         struct clk *clk_gate;
 255         struct reset_control *reset;
 256         u32 fw_addr_offset;
 257         char *fw_name;
 258 };
 259
 260 struct gswip_vlan {
 261         struct net_device *bridge;
 262         u16 vid;
 263         u8 fid;
 264 };
 265
 266 struct gswip_priv {
 267         __iomem void *gswip;
 268         __iomem void *mdio;
 269         __iomem void *mii;
 270         const struct gswip_hw_info *hw_info;
 271         const struct xway_gphy_match_data *gphy_fw_name_cfg;
 272         struct dsa_switch *ds;
 273         struct device *dev;
 274         struct regmap *rcu_regmap;
 275         struct gswip_vlan vlans[64];
 276         int num_gphy_fw;
 277         struct gswip_gphy_fw *gphy_fw;
 278         u32 port_vlan_filter;
 279 };
 280
 281 struct gswip_pce_table_entry {
 282         u16 index;      // PCE_TBL_ADDR.ADDR = pData->table_index
 283         u16 table;      // PCE_TBL_CTRL.ADDR = pData->table
 284         u16 key[8];
 285         u16 val[5];
 286         u16 mask;
 287         u8 gmap;
 288         bool type;
 289         bool valid;
 290         bool key_mode;
 291 };
 292
 293 struct gswip_rmon_cnt_desc {
 294         unsigned int size;
 295         unsigned int offset;
 296         const char *name;
 297 };
 298
 299 #define MIB_DESC(_size, _offset, _name) {.size = _size, .offset = _offset, .name = _name}
 300
 301 static const struct gswip_rmon_cnt_desc gswip_rmon_cnt[] = {
 302         /** Receive Packet Count (only packets that are accepted and not discarded). */
 303         MIB_DESC(1, 0x1F, "RxGoodPkts"),
 304         MIB_DESC(1, 0x23, "RxUnicastPkts"),
 305         MIB_DESC(1, 0x22, "RxMulticastPkts"),
 306         MIB_DESC(1, 0x21, "RxFCSErrorPkts"),
 307         MIB_DESC(1, 0x1D, "RxUnderSizeGoodPkts"),
 308         MIB_DESC(1, 0x1E, "RxUnderSizeErrorPkts"),
 309         MIB_DESC(1, 0x1B, "RxOversizeGoodPkts"),
 310         MIB_DESC(1, 0x1C, "RxOversizeErrorPkts"),
 311         MIB_DESC(1, 0x20, "RxGoodPausePkts"),
 312         MIB_DESC(1, 0x1A, "RxAlignErrorPkts"),
 313         MIB_DESC(1, 0x12, "Rx64BytePkts"),
 314         MIB_DESC(1, 0x13, "Rx127BytePkts"),
 315         MIB_DESC(1, 0x14, "Rx255BytePkts"),
 316         MIB_DESC(1, 0x15, "Rx511BytePkts"),
 317         MIB_DESC(1, 0x16, "Rx1023BytePkts"),
 318         /** Receive Size 1024-1522 (or more, if configured) Packet Count. */
 319         MIB_DESC(1, 0x17, "RxMaxBytePkts"),
 320         MIB_DESC(1, 0x18, "RxDroppedPkts"),
 321         MIB_DESC(1, 0x19, "RxFilteredPkts"),
 322         MIB_DESC(2, 0x24, "RxGoodBytes"),
 323         MIB_DESC(2, 0x26, "RxBadBytes"),
 324         MIB_DESC(1, 0x11, "TxAcmDroppedPkts"),
 325         MIB_DESC(1, 0x0C, "TxGoodPkts"),
 326         MIB_DESC(1, 0x06, "TxUnicastPkts"),
 327         MIB_DESC(1, 0x07, "TxMulticastPkts"),
 328         MIB_DESC(1, 0x00, "Tx64BytePkts"),
 329         MIB_DESC(1, 0x01, "Tx127BytePkts"),
 330         MIB_DESC(1, 0x02, "Tx255BytePkts"),
 331         MIB_DESC(1, 0x03, "Tx511BytePkts"),
 332         MIB_DESC(1, 0x04, "Tx1023BytePkts"),
 333         /** Transmit Size 1024-1522 (or more, if configured) Packet Count. */
 334         MIB_DESC(1, 0x05, "TxMaxBytePkts"),
 335         MIB_DESC(1, 0x08, "TxSingleCollCount"),
 336         MIB_DESC(1, 0x09, "TxMultCollCount"),
 337         MIB_DESC(1, 0x0A, "TxLateCollCount"),
 338         MIB_DESC(1, 0x0B, "TxExcessCollCount"),
 339         MIB_DESC(1, 0x0D, "TxPauseCount"),
 340         MIB_DESC(1, 0x10, "TxDroppedPkts"),
 341         MIB_DESC(2, 0x0E, "TxGoodBytes"),
 342 };
 343
 344 static u32 gswip_switch_r(struct gswip_priv *priv, u32 offset)
 345 {
 346         return __raw_readl(priv->gswip + (offset * 4));
 347 }
 348
 349 static void gswip_switch_w(struct gswip_priv *priv, u32 val, u32 offset)
 350 {
 351         __raw_writel(val, priv->gswip + (offset * 4));
 352 }
 353
 354 static void gswip_switch_mask(struct gswip_priv *priv, u32 clear, u32 set,
 355                               u32 offset)
 356 {
 357         u32 val = gswip_switch_r(priv, offset);
 358
 359         val &= ~(clear);
 360         val |= set;
 361         gswip_switch_w(priv, val, offset);
 362 }
 363
 364 static u32 gswip_switch_r_timeout(struct gswip_priv *priv, u32 offset,
 365                                   u32 cleared)
 366 {
 367         u32 val;
 368
 369         return readx_poll_timeout(__raw_readl, priv->gswip + (offset * 4), val,
 370                                   (val & cleared) == 0, 20, 50000);
 371 }
 372
 373 static u32 gswip_mdio_r(struct gswip_priv *priv, u32 offset)
 374 {
 375         return __raw_readl(priv->mdio + (offset * 4));
 376 }
 377
 378 static void gswip_mdio_w(struct gswip_priv *priv, u32 val, u32 offset)
 379 {
 380         __raw_writel(val, priv->mdio + (offset * 4));
 381 }
 382
 383 static void gswip_mdio_mask(struct gswip_priv *priv, u32 clear, u32 set,
 384                             u32 offset)
 385 {
 386         u32 val = gswip_mdio_r(priv, offset);
 387
 388         val &= ~(clear);
 389         val |= set;
 390         gswip_mdio_w(priv, val, offset);
 391 }
 392
 393 static u32 gswip_mii_r(struct gswip_priv *priv, u32 offset)
 394 {
 395         return __raw_readl(priv->mii + (offset * 4));
 396 }
 397
 398 static void gswip_mii_w(struct gswip_priv *priv, u32 val, u32 offset)
 399 {
 400         __raw_writel(val, priv->mii + (offset * 4));
 401 }
 402
 403 static void gswip_mii_mask(struct gswip_priv *priv, u32 clear, u32 set,
 404                            u32 offset)
 405 {
 406         u32 val = gswip_mii_r(priv, offset);
 407
 408         val &= ~(clear);
 409         val |= set;
 410         gswip_mii_w(priv, val, offset);
 411 }
 412
 413 static void gswip_mii_mask_cfg(struct gswip_priv *priv, u32 clear, u32 set,
 414                                int port)
 415 {
 416         /* There's no MII_CFG register for the CPU port */
 417         if (!dsa_is_cpu_port(priv->ds, port))
 418                 gswip_mii_mask(priv, clear, set, GSWIP_MII_CFGp(port));
 419 }
 420
 421 static void gswip_mii_mask_pcdu(struct gswip_priv *priv, u32 clear, u32 set,
 422                                 int port)
 423 {
 424         switch (port) {
 425         case 0:
 426                 gswip_mii_mask(priv, clear, set, GSWIP_MII_PCDU0);
 427                 break;
 428         case 1:
 429                 gswip_mii_mask(priv, clear, set, GSWIP_MII_PCDU1);
 430                 break;
 431         case 5:
 432                 gswip_mii_mask(priv, clear, set, GSWIP_MII_PCDU5);
 433                 break;
 434         }
 435 }
 436
 437 static int gswip_mdio_poll(struct gswip_priv *priv)
 438 {
 439         int cnt = 100;
 440
 441         while (likely(cnt--)) {
 442                 u32 ctrl = gswip_mdio_r(priv, GSWIP_MDIO_CTRL);
 443
 444                 if ((ctrl & GSWIP_MDIO_CTRL_BUSY) == 0)
 445                         return 0;
 446                 usleep_range(20, 40);
 447         }
 448
 449         return -ETIMEDOUT;
 450 }
 451
 452 static int gswip_mdio_wr(struct mii_bus *bus, int addr, int reg, u16 val)
 453 {
 454         struct gswip_priv *priv = bus->priv;
 455         int err;
 456
 457         err = gswip_mdio_poll(priv);
 458         if (err) {
 459                 dev_err(&bus->dev, "waiting for MDIO bus busy timed out\n");
 460                 return err;
 461         }
 462
 463         gswip_mdio_w(priv, val, GSWIP_MDIO_WRITE);
 464         gswip_mdio_w(priv, GSWIP_MDIO_CTRL_BUSY | GSWIP_MDIO_CTRL_WR |
 465                 ((addr & GSWIP_MDIO_CTRL_PHYAD_MASK) << GSWIP_MDIO_CTRL_PHYAD_SHIFT) |
 466                 (reg & GSWIP_MDIO_CTRL_REGAD_MASK),
 467                 GSWIP_MDIO_CTRL);
 468
 469         return 0;
 470 }
 471
 472 static int gswip_mdio_rd(struct mii_bus *bus, int addr, int reg)
 473 {
 474         struct gswip_priv *priv = bus->priv;
 475         int err;
 476
 477         err = gswip_mdio_poll(priv);
 478         if (err) {
 479                 dev_err(&bus->dev, "waiting for MDIO bus busy timed out\n");
 480                 return err;
 481         }
 482
 483         gswip_mdio_w(priv, GSWIP_MDIO_CTRL_BUSY | GSWIP_MDIO_CTRL_RD |
 484                 ((addr & GSWIP_MDIO_CTRL_PHYAD_MASK) << GSWIP_MDIO_CTRL_PHYAD_SHIFT) |
 485                 (reg & GSWIP_MDIO_CTRL_REGAD_MASK),
 486                 GSWIP_MDIO_CTRL);
 487
 488         err = gswip_mdio_poll(priv);
 489         if (err) {
 490                 dev_err(&bus->dev, "waiting for MDIO bus busy timed out\n");
 491                 return err;
 492         }
 493
 494         return gswip_mdio_r(priv, GSWIP_MDIO_READ);
 495 }
 496
 497 static int gswip_mdio(struct gswip_priv *priv, struct device_node *mdio_np)
 498 {
 499         struct dsa_switch *ds = priv->ds;
 500
 501         ds->slave_mii_bus = devm_mdiobus_alloc(priv->dev);
 502         if (!ds->slave_mii_bus)
 503                 return -ENOMEM;
 504
 505         ds->slave_mii_bus->priv = priv;
 506         ds->slave_mii_bus->read = gswip_mdio_rd;
 507         ds->slave_mii_bus->write = gswip_mdio_wr;
 508         ds->slave_mii_bus->name = "lantiq,xrx200-mdio";
 509         snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "%s-mii",
 510                  dev_name(priv->dev));
 511         ds->slave_mii_bus->parent = priv->dev;
 512         ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask;
 513
 514         return of_mdiobus_register(ds->slave_mii_bus, mdio_np);
 515 }
 516
 517 static int gswip_pce_table_entry_read(struct gswip_priv *priv,
 518                                       struct gswip_pce_table_entry *tbl)
 519 {
 520         int i;
 521         int err;
 522         u16 crtl;
 523         u16 addr_mode = tbl->key_mode ? GSWIP_PCE_TBL_CTRL_OPMOD_KSRD :
 524                                         GSWIP_PCE_TBL_CTRL_OPMOD_ADRD;
 525
 526         err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
 527                                      GSWIP_PCE_TBL_CTRL_BAS);
 528         if (err)
 529                 return err;
 530
 531         gswip_switch_w(priv, tbl->index, GSWIP_PCE_TBL_ADDR);
 532         gswip_switch_mask(priv, GSWIP_PCE_TBL_CTRL_ADDR_MASK |
 533                                 GSWIP_PCE_TBL_CTRL_OPMOD_MASK,
 534                           tbl->table | addr_mode | GSWIP_PCE_TBL_CTRL_BAS,
 535                           GSWIP_PCE_TBL_CTRL);
 536
 537         err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
 538                                      GSWIP_PCE_TBL_CTRL_BAS);
 539         if (err)
 540                 return err;
 541
 542         for (i = 0; i < ARRAY_SIZE(tbl->key); i++)
 543                 tbl->key[i] = gswip_switch_r(priv, GSWIP_PCE_TBL_KEY(i));
 544
 545         for (i = 0; i < ARRAY_SIZE(tbl->val); i++)
 546                 tbl->val[i] = gswip_switch_r(priv, GSWIP_PCE_TBL_VAL(i));
 547
 548         tbl->mask = gswip_switch_r(priv, GSWIP_PCE_TBL_MASK);
 549
 550         crtl = gswip_switch_r(priv, GSWIP_PCE_TBL_CTRL);
 551
 552         tbl->type = !!(crtl & GSWIP_PCE_TBL_CTRL_TYPE);
 553         tbl->valid = !!(crtl & GSWIP_PCE_TBL_CTRL_VLD);
 554         tbl->gmap = (crtl & GSWIP_PCE_TBL_CTRL_GMAP_MASK) >> 7;
 555
 556         return 0;
 557 }
 558
 559 static int gswip_pce_table_entry_write(struct gswip_priv *priv,
 560                                        struct gswip_pce_table_entry *tbl)
 561 {
 562         int i;
 563         int err;
 564         u16 crtl;
 565         u16 addr_mode = tbl->key_mode ? GSWIP_PCE_TBL_CTRL_OPMOD_KSWR :
 566                                         GSWIP_PCE_TBL_CTRL_OPMOD_ADWR;
 567
 568         err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
 569                                      GSWIP_PCE_TBL_CTRL_BAS);
 570         if (err)
 571                 return err;
 572
 573         gswip_switch_w(priv, tbl->index, GSWIP_PCE_TBL_ADDR);
 574         gswip_switch_mask(priv, GSWIP_PCE_TBL_CTRL_ADDR_MASK |
 575                                 GSWIP_PCE_TBL_CTRL_OPMOD_MASK,
 576                           tbl->table | addr_mode,
 577                           GSWIP_PCE_TBL_CTRL);
 578
 579         for (i = 0; i < ARRAY_SIZE(tbl->key); i++)
 580                 gswip_switch_w(priv, tbl->key[i], GSWIP_PCE_TBL_KEY(i));
 581
 582         for (i = 0; i < ARRAY_SIZE(tbl->val); i++)
 583                 gswip_switch_w(priv, tbl->val[i], GSWIP_PCE_TBL_VAL(i));
 584
 585         gswip_switch_mask(priv, GSWIP_PCE_TBL_CTRL_ADDR_MASK |
 586                                 GSWIP_PCE_TBL_CTRL_OPMOD_MASK,
 587                           tbl->table | addr_mode,
 588                           GSWIP_PCE_TBL_CTRL);
 589
 590         gswip_switch_w(priv, tbl->mask, GSWIP_PCE_TBL_MASK);
 591
 592         crtl = gswip_switch_r(priv, GSWIP_PCE_TBL_CTRL);
 593         crtl &= ~(GSWIP_PCE_TBL_CTRL_TYPE | GSWIP_PCE_TBL_CTRL_VLD |
 594                   GSWIP_PCE_TBL_CTRL_GMAP_MASK);
 595         if (tbl->type)
 596                 crtl |= GSWIP_PCE_TBL_CTRL_TYPE;
 597         if (tbl->valid)
 598                 crtl |= GSWIP_PCE_TBL_CTRL_VLD;
 599         crtl |= (tbl->gmap << 7) & GSWIP_PCE_TBL_CTRL_GMAP_MASK;
 600         crtl |= GSWIP_PCE_TBL_CTRL_BAS;
 601         gswip_switch_w(priv, crtl, GSWIP_PCE_TBL_CTRL);
 602
 603         return gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
 604                                       GSWIP_PCE_TBL_CTRL_BAS);
 605 }
 606
 607 /* Add the LAN port into a bridge with the CPU port by
 608  * default. This prevents automatic forwarding of
 609  * packages between the LAN ports when no explicit
 610  * bridge is configured.
 611  */
 612 static int gswip_add_single_port_br(struct gswip_priv *priv, int port, bool add)
 613 {
 614         struct gswip_pce_table_entry vlan_active = {0,};
 615         struct gswip_pce_table_entry vlan_mapping = {0,};
 616         unsigned int cpu_port = priv->hw_info->cpu_port;
 617         unsigned int max_ports = priv->hw_info->max_ports;
 618         int err;
 619
 620         if (port >= max_ports) {
 621                 dev_err(priv->dev, "single port for %i supported\n", port);
 622                 return -EIO;
 623         }
 624
 625         vlan_active.index = port + 1;
 626         vlan_active.table = GSWIP_TABLE_ACTIVE_VLAN;
 627         vlan_active.key[0] = 0; /* vid */
 628         vlan_active.val[0] = port + 1 /* fid */;
 629         vlan_active.valid = add;
 630         err = gswip_pce_table_entry_write(priv, &vlan_active);
 631         if (err) {
 632                 dev_err(priv->dev, "failed to write active VLAN: %d\n", err);
 633                 return err;
 634         }
 635
 636         if (!add)
 637                 return 0;
 638
 639         vlan_mapping.index = port + 1;
 640         vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
 641         vlan_mapping.val[0] = 0 /* vid */;
 642         vlan_mapping.val[1] = BIT(port) | BIT(cpu_port);
 643         vlan_mapping.val[2] = 0;
 644         err = gswip_pce_table_entry_write(priv, &vlan_mapping);
 645         if (err) {
 646                 dev_err(priv->dev, "failed to write VLAN mapping: %d\n", err);
 647                 return err;
 648         }
 649
 650         return 0;
 651 }
 652
 653 static int gswip_port_enable(struct dsa_switch *ds, int port,
 654                              struct phy_device *phydev)
 655 {
 656         struct gswip_priv *priv = ds->priv;
 657         int err;
 658
 659         if (!dsa_is_user_port(ds, port))
 660                 return 0;
 661
 662         if (!dsa_is_cpu_port(ds, port)) {
 663                 err = gswip_add_single_port_br(priv, port, true);
 664                 if (err)
 665                         return err;
 666         }
 667
 668         /* RMON Counter Enable for port */
 669         gswip_switch_w(priv, GSWIP_BM_PCFG_CNTEN, GSWIP_BM_PCFGp(port));
 670
 671         /* enable port fetch/store dma & VLAN Modification */
 672         gswip_switch_mask(priv, 0, GSWIP_FDMA_PCTRL_EN |
 673                                    GSWIP_FDMA_PCTRL_VLANMOD_BOTH,
 674                          GSWIP_FDMA_PCTRLp(port));
 675         gswip_switch_mask(priv, 0, GSWIP_SDMA_PCTRL_EN,
 676                           GSWIP_SDMA_PCTRLp(port));
 677
 678         if (!dsa_is_cpu_port(ds, port)) {
 679                 u32 mdio_phy = 0;
 680
 681                 if (phydev)
 682                         mdio_phy = phydev->mdio.addr & GSWIP_MDIO_PHY_ADDR_MASK;
 683
 684                 gswip_mdio_mask(priv, GSWIP_MDIO_PHY_ADDR_MASK, mdio_phy,
 685                                 GSWIP_MDIO_PHYp(port));
 686         }
 687
 688         return 0;
 689 }
 690
 691 static void gswip_port_disable(struct dsa_switch *ds, int port)
 692 {
 693         struct gswip_priv *priv = ds->priv;
 694
 695         if (!dsa_is_user_port(ds, port))
 696                 return;
 697
 698         gswip_switch_mask(priv, GSWIP_FDMA_PCTRL_EN, 0,
 699                           GSWIP_FDMA_PCTRLp(port));
 700         gswip_switch_mask(priv, GSWIP_SDMA_PCTRL_EN, 0,
 701                           GSWIP_SDMA_PCTRLp(port));
 702 }
 703
 704 static int gswip_pce_load_microcode(struct gswip_priv *priv)
 705 {
 706         int i;
 707         int err;
 708
 709         gswip_switch_mask(priv, GSWIP_PCE_TBL_CTRL_ADDR_MASK |
 710                                 GSWIP_PCE_TBL_CTRL_OPMOD_MASK,
 711                           GSWIP_PCE_TBL_CTRL_OPMOD_ADWR, GSWIP_PCE_TBL_CTRL);
 712         gswip_switch_w(priv, 0, GSWIP_PCE_TBL_MASK);
 713
 714         for (i = 0; i < ARRAY_SIZE(gswip_pce_microcode); i++) {
 715                 gswip_switch_w(priv, i, GSWIP_PCE_TBL_ADDR);
 716                 gswip_switch_w(priv, gswip_pce_microcode[i].val_0,
 717                                GSWIP_PCE_TBL_VAL(0));
 718                 gswip_switch_w(priv, gswip_pce_microcode[i].val_1,
 719                                GSWIP_PCE_TBL_VAL(1));
 720                 gswip_switch_w(priv, gswip_pce_microcode[i].val_2,
 721                                GSWIP_PCE_TBL_VAL(2));
 722                 gswip_switch_w(priv, gswip_pce_microcode[i].val_3,
 723                                GSWIP_PCE_TBL_VAL(3));
 724
 725                 /* start the table access: */
 726                 gswip_switch_mask(priv, 0, GSWIP_PCE_TBL_CTRL_BAS,
 727                                   GSWIP_PCE_TBL_CTRL);
 728                 err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
 729                                              GSWIP_PCE_TBL_CTRL_BAS);
 730                 if (err)
 731                         return err;
 732         }
 733
 734         /* tell the switch that the microcode is loaded */
 735         gswip_switch_mask(priv, 0, GSWIP_PCE_GCTRL_0_MC_VALID,
 736                           GSWIP_PCE_GCTRL_0);
 737
 738         return 0;
 739 }
 740
 741 static int gswip_port_vlan_filtering(struct dsa_switch *ds, int port,
 742                                      bool vlan_filtering,
 743                                      struct netlink_ext_ack *extack)
 744 {
 745         struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
 746         struct gswip_priv *priv = ds->priv;
 747
 748         /* Do not allow changing the VLAN filtering options while in bridge */
 749         if (bridge && !!(priv->port_vlan_filter & BIT(port)) != vlan_filtering) {
 750                 NL_SET_ERR_MSG_MOD(extack,
 751                                    "Dynamic toggling of vlan_filtering not supported");
 752                 return -EIO;
 753         }
 754
 755         if (vlan_filtering) {
 756                 /* Use port based VLAN tag */
 757                 gswip_switch_mask(priv,
 758                                   GSWIP_PCE_VCTRL_VSR,
 759                                   GSWIP_PCE_VCTRL_UVR | GSWIP_PCE_VCTRL_VIMR |
 760                                   GSWIP_PCE_VCTRL_VEMR,
 761                                   GSWIP_PCE_VCTRL(port));
 762                 gswip_switch_mask(priv, GSWIP_PCE_PCTRL_0_TVM, 0,
 763                                   GSWIP_PCE_PCTRL_0p(port));
 764         } else {
 765                 /* Use port based VLAN tag */
 766                 gswip_switch_mask(priv,
 767                                   GSWIP_PCE_VCTRL_UVR | GSWIP_PCE_VCTRL_VIMR |
 768                                   GSWIP_PCE_VCTRL_VEMR,
 769                                   GSWIP_PCE_VCTRL_VSR,
 770                                   GSWIP_PCE_VCTRL(port));
 771                 gswip_switch_mask(priv, 0, GSWIP_PCE_PCTRL_0_TVM,
 772                                   GSWIP_PCE_PCTRL_0p(port));
 773         }
 774
 775         return 0;
 776 }
 777
 778 static int gswip_setup(struct dsa_switch *ds)
 779 {
 780         struct gswip_priv *priv = ds->priv;
 781         unsigned int cpu_port = priv->hw_info->cpu_port;
 782         int i;
 783         int err;
 784
 785         gswip_switch_w(priv, GSWIP_SWRES_R0, GSWIP_SWRES);
 786         usleep_range(5000, 10000);
 787         gswip_switch_w(priv, 0, GSWIP_SWRES);
 788
 789         /* disable port fetch/store dma on all ports */
 790         for (i = 0; i < priv->hw_info->max_ports; i++) {
 791                 gswip_port_disable(ds, i);
 792                 gswip_port_vlan_filtering(ds, i, false, NULL);
 793         }
 794
 795         /* enable Switch */
 796         gswip_mdio_mask(priv, 0, GSWIP_MDIO_GLOB_ENABLE, GSWIP_MDIO_GLOB);
 797
 798         err = gswip_pce_load_microcode(priv);
 799         if (err) {
 800                 dev_err(priv->dev, "writing PCE microcode failed, %i", err);
 801                 return err;
 802         }
 803
 804         /* Default unknown Broadcast/Multicast/Unicast port maps */
 805         gswip_switch_w(priv, BIT(cpu_port), GSWIP_PCE_PMAP1);
 806         gswip_switch_w(priv, BIT(cpu_port), GSWIP_PCE_PMAP2);
 807         gswip_switch_w(priv, BIT(cpu_port), GSWIP_PCE_PMAP3);
 808
 809         /* Deactivate MDIO PHY auto polling. Some PHYs as the AR8030 have an
 810          * interoperability problem with this auto polling mechanism because
 811          * their status registers think that the link is in a different state
 812          * than it actually is. For the AR8030 it has the BMSR_ESTATEN bit set
 813          * as well as ESTATUS_1000_TFULL and ESTATUS_1000_XFULL. This makes the
 814          * auto polling state machine consider the link being negotiated with
 815          * 1Gbit/s. Since the PHY itself is a Fast Ethernet RMII PHY this leads
 816          * to the switch port being completely dead (RX and TX are both not
 817          * working).
 818          * Also with various other PHY / port combinations (PHY11G GPHY, PHY22F
 819          * GPHY, external RGMII PEF7071/7072) any traffic would stop. Sometimes
 820          * it would work fine for a few minutes to hours and then stop, on
 821          * other device it would no traffic could be sent or received at all.
 822          * Testing shows that when PHY auto polling is disabled these problems
 823          * go away.
 824          */
 825         gswip_mdio_w(priv, 0x0, GSWIP_MDIO_MDC_CFG0);
 826
 827         /* Configure the MDIO Clock 2.5 MHz */
 828         gswip_mdio_mask(priv, 0xff, 0x09, GSWIP_MDIO_MDC_CFG1);
 829
 830         /* Disable the xMII interface and clear it's isolation bit */
 831         for (i = 0; i < priv->hw_info->max_ports; i++)
 832                 gswip_mii_mask_cfg(priv,
 833                                    GSWIP_MII_CFG_EN | GSWIP_MII_CFG_ISOLATE,
 834                                    0, i);
 835
 836         /* enable special tag insertion on cpu port */
 837         gswip_switch_mask(priv, 0, GSWIP_FDMA_PCTRL_STEN,
 838                           GSWIP_FDMA_PCTRLp(cpu_port));
 839
 840         /* accept special tag in ingress direction */
 841         gswip_switch_mask(priv, 0, GSWIP_PCE_PCTRL_0_INGRESS,
 842                           GSWIP_PCE_PCTRL_0p(cpu_port));
 843
 844         gswip_switch_mask(priv, 0, GSWIP_MAC_CTRL_2_MLEN,
 845                           GSWIP_MAC_CTRL_2p(cpu_port));
 846         gswip_switch_w(priv, VLAN_ETH_FRAME_LEN + 8 + ETH_FCS_LEN,
 847                        GSWIP_MAC_FLEN);
 848         gswip_switch_mask(priv, 0, GSWIP_BM_QUEUE_GCTRL_GL_MOD,
 849                           GSWIP_BM_QUEUE_GCTRL);
 850
 851         /* VLAN aware Switching */
 852         gswip_switch_mask(priv, 0, GSWIP_PCE_GCTRL_0_VLAN, GSWIP_PCE_GCTRL_0);
 853
 854         /* Flush MAC Table */
 855         gswip_switch_mask(priv, 0, GSWIP_PCE_GCTRL_0_MTFL, GSWIP_PCE_GCTRL_0);
 856
 857         err = gswip_switch_r_timeout(priv, GSWIP_PCE_GCTRL_0,
 858                                      GSWIP_PCE_GCTRL_0_MTFL);
 859         if (err) {
 860                 dev_err(priv->dev, "MAC flushing didn't finish\n");
 861                 return err;
 862         }
 863
 864         gswip_port_enable(ds, cpu_port, NULL);
 865
 866         ds->configure_vlan_while_not_filtering = false;
 867
 868         return 0;
 869 }
 870
 871 static enum dsa_tag_protocol gswip_get_tag_protocol(struct dsa_switch *ds,
 872                                                     int port,
 873                                                     enum dsa_tag_protocol mp)
 874 {
 875         return DSA_TAG_PROTO_GSWIP;
 876 }
 877
 878 static int gswip_vlan_active_create(struct gswip_priv *priv,
 879                                     struct net_device *bridge,
 880                                     int fid, u16 vid)
 881 {
 882         struct gswip_pce_table_entry vlan_active = {0,};
 883         unsigned int max_ports = priv->hw_info->max_ports;
 884         int idx = -1;
 885         int err;
 886         int i;
 887
 888         /* Look for a free slot */
 889         for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
 890                 if (!priv->vlans[i].bridge) {
 891                         idx = i;
 892                         break;
 893                 }
 894         }
 895
 896         if (idx == -1)
 897                 return -ENOSPC;
 898
 899         if (fid == -1)
 900                 fid = idx;
 901
 902         vlan_active.index = idx;
 903         vlan_active.table = GSWIP_TABLE_ACTIVE_VLAN;
 904         vlan_active.key[0] = vid;
 905         vlan_active.val[0] = fid;
 906         vlan_active.valid = true;
 907
 908         err = gswip_pce_table_entry_write(priv, &vlan_active);
 909         if (err) {
 910                 dev_err(priv->dev, "failed to write active VLAN: %d\n", err);
 911                 return err;
 912         }
 913
 914         priv->vlans[idx].bridge = bridge;
 915         priv->vlans[idx].vid = vid;
 916         priv->vlans[idx].fid = fid;
 917
 918         return idx;
 919 }
 920
 921 static int gswip_vlan_active_remove(struct gswip_priv *priv, int idx)
 922 {
 923         struct gswip_pce_table_entry vlan_active = {0,};
 924         int err;
 925
 926         vlan_active.index = idx;
 927         vlan_active.table = GSWIP_TABLE_ACTIVE_VLAN;
 928         vlan_active.valid = false;
 929         err = gswip_pce_table_entry_write(priv, &vlan_active);
 930         if (err)
 931                 dev_err(priv->dev, "failed to delete active VLAN: %d\n", err);
 932         priv->vlans[idx].bridge = NULL;
 933
 934         return err;
 935 }
 936
 937 static int gswip_vlan_add_unaware(struct gswip_priv *priv,
 938                                   struct net_device *bridge, int port)
 939 {
 940         struct gswip_pce_table_entry vlan_mapping = {0,};
 941         unsigned int max_ports = priv->hw_info->max_ports;
 942         unsigned int cpu_port = priv->hw_info->cpu_port;
 943         bool active_vlan_created = false;
 944         int idx = -1;
 945         int i;
 946         int err;
 947
 948         /* Check if there is already a page for this bridge */
 949         for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
 950                 if (priv->vlans[i].bridge == bridge) {
 951                         idx = i;
 952                         break;
 953                 }
 954         }
 955
 956         /* If this bridge is not programmed yet, add a Active VLAN table
 957          * entry in a free slot and prepare the VLAN mapping table entry.
 958          */
 959         if (idx == -1) {
 960                 idx = gswip_vlan_active_create(priv, bridge, -1, 0);
 961                 if (idx < 0)
 962                         return idx;
 963                 active_vlan_created = true;
 964
 965                 vlan_mapping.index = idx;
 966                 vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
 967                 /* VLAN ID byte, maps to the VLAN ID of vlan active table */
 968                 vlan_mapping.val[0] = 0;
 969         } else {
 970                 /* Read the existing VLAN mapping entry from the switch */
 971                 vlan_mapping.index = idx;
 972                 vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
 973                 err = gswip_pce_table_entry_read(priv, &vlan_mapping);
 974                 if (err) {
 975                         dev_err(priv->dev, "failed to read VLAN mapping: %d\n",
 976                                 err);
 977                         return err;
 978                 }
 979         }
 980
 981         /* Update the VLAN mapping entry and write it to the switch */
 982         vlan_mapping.val[1] |= BIT(cpu_port);
 983         vlan_mapping.val[1] |= BIT(port);
 984         err = gswip_pce_table_entry_write(priv, &vlan_mapping);
 985         if (err) {
 986                 dev_err(priv->dev, "failed to write VLAN mapping: %d\n", err);
 987                 /* In case an Active VLAN was creaetd delete it again */
 988                 if (active_vlan_created)
 989                         gswip_vlan_active_remove(priv, idx);
 990                 return err;
 991         }
 992
 993         gswip_switch_w(priv, 0, GSWIP_PCE_DEFPVID(port));
 994         return 0;
 995 }
 996
 997 static int gswip_vlan_add_aware(struct gswip_priv *priv,
 998                                 struct net_device *bridge, int port,
 999                                 u16 vid, bool untagged,
1000                                 bool pvid)
1001 {
1002         struct gswip_pce_table_entry vlan_mapping = {0,};
1003         unsigned int max_ports = priv->hw_info->max_ports;
1004         unsigned int cpu_port = priv->hw_info->cpu_port;
1005         bool active_vlan_created = false;
1006         int idx = -1;
1007         int fid = -1;
1008         int i;
1009         int err;
1010
1011         /* Check if there is already a page for this bridge */
1012         for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
1013                 if (priv->vlans[i].bridge == bridge) {
1014                         if (fid != -1 && fid != priv->vlans[i].fid)
1015                                 dev_err(priv->dev, "one bridge with multiple flow ids\n");
1016                         fid = priv->vlans[i].fid;
1017                         if (priv->vlans[i].vid == vid) {
1018                                 idx = i;
1019                                 break;
1020                         }
1021                 }
1022         }
1023
1024         /* If this bridge is not programmed yet, add a Active VLAN table
1025          * entry in a free slot and prepare the VLAN mapping table entry.
1026          */
1027         if (idx == -1) {
1028                 idx = gswip_vlan_active_create(priv, bridge, fid, vid);
1029                 if (idx < 0)
1030                         return idx;
1031                 active_vlan_created = true;
1032
1033                 vlan_mapping.index = idx;
1034                 vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
1035                 /* VLAN ID byte, maps to the VLAN ID of vlan active table */
1036                 vlan_mapping.val[0] = vid;
1037         } else {
1038                 /* Read the existing VLAN mapping entry from the switch */
1039                 vlan_mapping.index = idx;
1040                 vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
1041                 err = gswip_pce_table_entry_read(priv, &vlan_mapping);
1042                 if (err) {
1043                         dev_err(priv->dev, "failed to read VLAN mapping: %d\n",
1044                                 err);
1045                         return err;
1046                 }
1047         }
1048
1049         vlan_mapping.val[0] = vid;
1050         /* Update the VLAN mapping entry and write it to the switch */
1051         vlan_mapping.val[1] |= BIT(cpu_port);
1052         vlan_mapping.val[2] |= BIT(cpu_port);
1053         vlan_mapping.val[1] |= BIT(port);
1054         if (untagged)
1055                 vlan_mapping.val[2] &= ~BIT(port);
1056         else
1057                 vlan_mapping.val[2] |= BIT(port);
1058         err = gswip_pce_table_entry_write(priv, &vlan_mapping);
1059         if (err) {
1060                 dev_err(priv->dev, "failed to write VLAN mapping: %d\n", err);
1061                 /* In case an Active VLAN was creaetd delete it again */
1062                 if (active_vlan_created)
1063                         gswip_vlan_active_remove(priv, idx);
1064                 return err;
1065         }
1066
1067         if (pvid)
1068                 gswip_switch_w(priv, idx, GSWIP_PCE_DEFPVID(port));
1069
1070         return 0;
1071 }
1072
1073 static int gswip_vlan_remove(struct gswip_priv *priv,
1074                              struct net_device *bridge, int port,
1075                              u16 vid, bool pvid, bool vlan_aware)
1076 {
1077         struct gswip_pce_table_entry vlan_mapping = {0,};
1078         unsigned int max_ports = priv->hw_info->max_ports;
1079         unsigned int cpu_port = priv->hw_info->cpu_port;
1080         int idx = -1;
1081         int i;
1082         int err;
1083
1084         /* Check if there is already a page for this bridge */
1085         for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
1086                 if (priv->vlans[i].bridge == bridge &&
1087                     (!vlan_aware || priv->vlans[i].vid == vid)) {
1088                         idx = i;
1089                         break;
1090                 }
1091         }
1092
1093         if (idx == -1) {
1094                 dev_err(priv->dev, "bridge to leave does not exists\n");
1095                 return -ENOENT;
1096         }
1097
1098         vlan_mapping.index = idx;
1099         vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
1100         err = gswip_pce_table_entry_read(priv, &vlan_mapping);
1101         if (err) {
1102                 dev_err(priv->dev, "failed to read VLAN mapping: %d\n", err);
1103                 return err;
1104         }
1105
1106         vlan_mapping.val[1] &= ~BIT(port);
1107         vlan_mapping.val[2] &= ~BIT(port);
1108         err = gswip_pce_table_entry_write(priv, &vlan_mapping);
1109         if (err) {
1110                 dev_err(priv->dev, "failed to write VLAN mapping: %d\n", err);
1111                 return err;
1112         }
1113
1114         /* In case all ports are removed from the bridge, remove the VLAN */
1115         if ((vlan_mapping.val[1] & ~BIT(cpu_port)) == 0) {
1116                 err = gswip_vlan_active_remove(priv, idx);
1117                 if (err) {
1118                         dev_err(priv->dev, "failed to write active VLAN: %d\n",
1119                                 err);
1120                         return err;
1121                 }
1122         }
1123
1124         /* GSWIP 2.2 (GRX300) and later program here the VID directly. */
1125         if (pvid)
1126                 gswip_switch_w(priv, 0, GSWIP_PCE_DEFPVID(port));
1127
1128         return 0;
1129 }
1130
1131 static int gswip_port_bridge_join(struct dsa_switch *ds, int port,
1132                                   struct net_device *bridge)
1133 {
1134         struct gswip_priv *priv = ds->priv;
1135         int err;
1136
1137         /* When the bridge uses VLAN filtering we have to configure VLAN
1138          * specific bridges. No bridge is configured here.
1139          */
1140         if (!br_vlan_enabled(bridge)) {
1141                 err = gswip_vlan_add_unaware(priv, bridge, port);
1142                 if (err)
1143                         return err;
1144                 priv->port_vlan_filter &= ~BIT(port);
1145         } else {
1146                 priv->port_vlan_filter |= BIT(port);
1147         }
1148         return gswip_add_single_port_br(priv, port, false);
1149 }
1150
1151 static void gswip_port_bridge_leave(struct dsa_switch *ds, int port,
1152                                     struct net_device *bridge)
1153 {
1154         struct gswip_priv *priv = ds->priv;
1155
1156         gswip_add_single_port_br(priv, port, true);
1157
1158         /* When the bridge uses VLAN filtering we have to configure VLAN
1159          * specific bridges. No bridge is configured here.
1160          */
1161         if (!br_vlan_enabled(bridge))
1162                 gswip_vlan_remove(priv, bridge, port, 0, true, false);
1163 }
1164
1165 static int gswip_port_vlan_prepare(struct dsa_switch *ds, int port,
1166                                    const struct switchdev_obj_port_vlan *vlan,
1167                                    struct netlink_ext_ack *extack)
1168 {
1169         struct gswip_priv *priv = ds->priv;
1170         struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
1171         unsigned int max_ports = priv->hw_info->max_ports;
1172         int pos = max_ports;
1173         int i, idx = -1;
1174
1175         /* We only support VLAN filtering on bridges */
1176         if (!dsa_is_cpu_port(ds, port) && !bridge)
1177                 return -EOPNOTSUPP;
1178
1179         /* Check if there is already a page for this VLAN */
1180         for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
1181                 if (priv->vlans[i].bridge == bridge &&
1182                     priv->vlans[i].vid == vlan->vid) {
1183                         idx = i;
1184                         break;
1185                 }
1186         }
1187
1188         /* If this VLAN is not programmed yet, we have to reserve
1189          * one entry in the VLAN table. Make sure we start at the
1190          * next position round.
1191          */
1192         if (idx == -1) {
1193                 /* Look for a free slot */
1194                 for (; pos < ARRAY_SIZE(priv->vlans); pos++) {
1195                         if (!priv->vlans[pos].bridge) {
1196                                 idx = pos;
1197                                 pos++;
1198                                 break;
1199                         }
1200                 }
1201
1202                 if (idx == -1) {
1203                         NL_SET_ERR_MSG_MOD(extack, "No slot in VLAN table");
1204                         return -ENOSPC;
1205                 }
1206         }
1207
1208         return 0;
1209 }
1210
1211 static int gswip_port_vlan_add(struct dsa_switch *ds, int port,
1212                                const struct switchdev_obj_port_vlan *vlan,
1213                                struct netlink_ext_ack *extack)
1214 {
1215         struct gswip_priv *priv = ds->priv;
1216         struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
1217         bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1218         bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
1219         int err;
1220
1221         err = gswip_port_vlan_prepare(ds, port, vlan, extack);
1222         if (err)
1223                 return err;
1224
1225         /* We have to receive all packets on the CPU port and should not
1226          * do any VLAN filtering here. This is also called with bridge
1227          * NULL and then we do not know for which bridge to configure
1228          * this.
1229          */
1230         if (dsa_is_cpu_port(ds, port))
1231                 return 0;
1232
1233         return gswip_vlan_add_aware(priv, bridge, port, vlan->vid,
1234                                     untagged, pvid);
1235 }
1236
1237 static int gswip_port_vlan_del(struct dsa_switch *ds, int port,
1238                                const struct switchdev_obj_port_vlan *vlan)
1239 {
1240         struct gswip_priv *priv = ds->priv;
1241         struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
1242         bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
1243
1244         /* We have to receive all packets on the CPU port and should not
1245          * do any VLAN filtering here. This is also called with bridge
1246          * NULL and then we do not know for which bridge to configure
1247          * this.
1248          */
1249         if (dsa_is_cpu_port(ds, port))
1250                 return 0;
1251
1252         return gswip_vlan_remove(priv, bridge, port, vlan->vid, pvid, true);
1253 }
1254
1255 static void gswip_port_fast_age(struct dsa_switch *ds, int port)
1256 {
1257         struct gswip_priv *priv = ds->priv;
1258         struct gswip_pce_table_entry mac_bridge = {0,};
1259         int i;
1260         int err;
1261
1262         for (i = 0; i < 2048; i++) {
1263                 mac_bridge.table = GSWIP_TABLE_MAC_BRIDGE;
1264                 mac_bridge.index = i;
1265
1266                 err = gswip_pce_table_entry_read(priv, &mac_bridge);
1267                 if (err) {
1268                         dev_err(priv->dev, "failed to read mac bridge: %d\n",
1269                                 err);
1270                         return;
1271                 }
1272
1273                 if (!mac_bridge.valid)
1274                         continue;
1275
1276                 if (mac_bridge.val[1] & GSWIP_TABLE_MAC_BRIDGE_STATIC)
1277                         continue;
1278
1279                 if (((mac_bridge.val[0] & GENMASK(7, 4)) >> 4) != port)
1280                         continue;
1281
1282                 mac_bridge.valid = false;
1283                 err = gswip_pce_table_entry_write(priv, &mac_bridge);
1284                 if (err) {
1285                         dev_err(priv->dev, "failed to write mac bridge: %d\n",
1286                                 err);
1287                         return;
1288                 }
1289         }
1290 }
1291
1292 static void gswip_port_stp_state_set(struct dsa_switch *ds, int port, u8 state)
1293 {
1294         struct gswip_priv *priv = ds->priv;
1295         u32 stp_state;
1296
1297         switch (state) {
1298         case BR_STATE_DISABLED:
1299                 gswip_switch_mask(priv, GSWIP_SDMA_PCTRL_EN, 0,
1300                                   GSWIP_SDMA_PCTRLp(port));
1301                 return;
1302         case BR_STATE_BLOCKING:
1303         case BR_STATE_LISTENING:
1304                 stp_state = GSWIP_PCE_PCTRL_0_PSTATE_LISTEN;
1305                 break;
1306         case BR_STATE_LEARNING:
1307                 stp_state = GSWIP_PCE_PCTRL_0_PSTATE_LEARNING;
1308                 break;
1309         case BR_STATE_FORWARDING:
1310                 stp_state = GSWIP_PCE_PCTRL_0_PSTATE_FORWARDING;
1311                 break;
1312         default:
1313                 dev_err(priv->dev, "invalid STP state: %d\n", state);
1314                 return;
1315         }
1316
1317         gswip_switch_mask(priv, 0, GSWIP_SDMA_PCTRL_EN,
1318                           GSWIP_SDMA_PCTRLp(port));
1319         gswip_switch_mask(priv, GSWIP_PCE_PCTRL_0_PSTATE_MASK, stp_state,
1320                           GSWIP_PCE_PCTRL_0p(port));
1321 }
1322
1323 static int gswip_port_fdb(struct dsa_switch *ds, int port,
1324                           const unsigned char *addr, u16 vid, bool add)
1325 {
1326         struct gswip_priv *priv = ds->priv;
1327         struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
1328         struct gswip_pce_table_entry mac_bridge = {0,};
1329         unsigned int cpu_port = priv->hw_info->cpu_port;
1330         int fid = -1;
1331         int i;
1332         int err;
1333
1334         if (!bridge)
1335                 return -EINVAL;
1336
1337         for (i = cpu_port; i < ARRAY_SIZE(priv->vlans); i++) {
1338                 if (priv->vlans[i].bridge == bridge) {
1339                         fid = priv->vlans[i].fid;
1340                         break;
1341                 }
1342         }
1343
1344         if (fid == -1) {
1345                 dev_err(priv->dev, "Port not part of a bridge\n");
1346                 return -EINVAL;
1347         }
1348
1349         mac_bridge.table = GSWIP_TABLE_MAC_BRIDGE;
1350         mac_bridge.key_mode = true;
1351         mac_bridge.key[0] = addr[5] | (addr[4] << 8);
1352         mac_bridge.key[1] = addr[3] | (addr[2] << 8);
1353         mac_bridge.key[2] = addr[1] | (addr[0] << 8);
1354         mac_bridge.key[3] = fid;
1355         mac_bridge.val[0] = add ? BIT(port) : 0; /* port map */
1356         mac_bridge.val[1] = GSWIP_TABLE_MAC_BRIDGE_STATIC;
1357         mac_bridge.valid = add;
1358
1359         err = gswip_pce_table_entry_write(priv, &mac_bridge);
1360         if (err)
1361                 dev_err(priv->dev, "failed to write mac bridge: %d\n", err);
1362
1363         return err;
1364 }
1365
1366 static int gswip_port_fdb_add(struct dsa_switch *ds, int port,
1367                               const unsigned char *addr, u16 vid)
1368 {
1369         return gswip_port_fdb(ds, port, addr, vid, true);
1370 }
1371
1372 static int gswip_port_fdb_del(struct dsa_switch *ds, int port,
1373                               const unsigned char *addr, u16 vid)
1374 {
1375         return gswip_port_fdb(ds, port, addr, vid, false);
1376 }
1377
1378 static int gswip_port_fdb_dump(struct dsa_switch *ds, int port,
1379                                dsa_fdb_dump_cb_t *cb, void *data)
1380 {
1381         struct gswip_priv *priv = ds->priv;
1382         struct gswip_pce_table_entry mac_bridge = {0,};
1383         unsigned char addr[6];
1384         int i;
1385         int err;
1386
1387         for (i = 0; i < 2048; i++) {
1388                 mac_bridge.table = GSWIP_TABLE_MAC_BRIDGE;
1389                 mac_bridge.index = i;
1390
1391                 err = gswip_pce_table_entry_read(priv, &mac_bridge);
1392                 if (err) {
1393                         dev_err(priv->dev, "failed to write mac bridge: %d\n",
1394                                 err);
1395                         return err;
1396                 }
1397
1398                 if (!mac_bridge.valid)
1399                         continue;
1400
1401                 addr[5] = mac_bridge.key[0] & 0xff;
1402                 addr[4] = (mac_bridge.key[0] >> 8) & 0xff;
1403                 addr[3] = mac_bridge.key[1] & 0xff;
1404                 addr[2] = (mac_bridge.key[1] >> 8) & 0xff;
1405                 addr[1] = mac_bridge.key[2] & 0xff;
1406                 addr[0] = (mac_bridge.key[2] >> 8) & 0xff;
1407                 if (mac_bridge.val[1] & GSWIP_TABLE_MAC_BRIDGE_STATIC) {
1408                         if (mac_bridge.val[0] & BIT(port)) {
1409                                 err = cb(addr, 0, true, data);
1410                                 if (err)
1411                                         return err;
1412                         }
1413                 } else {
1414                         if (((mac_bridge.val[0] & GENMASK(7, 4)) >> 4) == port) {
1415                                 err = cb(addr, 0, false, data);
1416                                 if (err)
1417                                         return err;
1418                         }
1419                 }
1420         }
1421         return 0;
1422 }
1423
1424 static void gswip_phylink_set_capab(unsigned long *supported,
1425                                     struct phylink_link_state *state)
1426 {
1427         __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
1428
1429         /* Allow all the expected bits */
1430         phylink_set(mask, Autoneg);
1431         phylink_set_port_modes(mask);
1432         phylink_set(mask, Pause);
1433         phylink_set(mask, Asym_Pause);
1434
1435         /* With the exclusion of MII, Reverse MII and Reduced MII, we
1436          * support Gigabit, including Half duplex
1437          */
1438         if (state->interface != PHY_INTERFACE_MODE_MII &&
1439             state->interface != PHY_INTERFACE_MODE_REVMII &&
1440             state->interface != PHY_INTERFACE_MODE_RMII) {
1441                 phylink_set(mask, 1000baseT_Full);
1442                 phylink_set(mask, 1000baseT_Half);
1443         }
1444
1445         phylink_set(mask, 10baseT_Half);
1446         phylink_set(mask, 10baseT_Full);
1447         phylink_set(mask, 100baseT_Half);
1448         phylink_set(mask, 100baseT_Full);
1449
1450         bitmap_and(supported, supported, mask,
1451                    __ETHTOOL_LINK_MODE_MASK_NBITS);
1452         bitmap_and(state->advertising, state->advertising, mask,
1453                    __ETHTOOL_LINK_MODE_MASK_NBITS);
1454 }
1455
1456 static void gswip_xrx200_phylink_validate(struct dsa_switch *ds, int port,
1457                                           unsigned long *supported,
1458                                           struct phylink_link_state *state)
1459 {
1460         switch (port) {
1461         case 0:
1462         case 1:
1463                 if (!phy_interface_mode_is_rgmii(state->interface) &&
1464                     state->interface != PHY_INTERFACE_MODE_MII &&
1465                     state->interface != PHY_INTERFACE_MODE_REVMII &&
1466                     state->interface != PHY_INTERFACE_MODE_RMII)
1467                         goto unsupported;
1468                 break;
1469         case 2:
1470         case 3:
1471         case 4:
1472                 if (state->interface != PHY_INTERFACE_MODE_INTERNAL)
1473                         goto unsupported;
1474                 break;
1475         case 5:
1476                 if (!phy_interface_mode_is_rgmii(state->interface) &&
1477                     state->interface != PHY_INTERFACE_MODE_INTERNAL)
1478                         goto unsupported;
1479                 break;
1480         default:
1481                 bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
1482                 dev_err(ds->dev, "Unsupported port: %i\n", port);
1483                 return;
1484         }
1485
1486         gswip_phylink_set_capab(supported, state);
1487
1488         return;
1489
1490 unsupported:
1491         bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
1492         dev_err(ds->dev, "Unsupported interface '%s' for port %d\n",
1493                 phy_modes(state->interface), port);
1494 }
1495
1496 static void gswip_xrx300_phylink_validate(struct dsa_switch *ds, int port,
1497                                           unsigned long *supported,
1498                                           struct phylink_link_state *state)
1499 {
1500         switch (port) {
1501         case 0:
1502                 if (!phy_interface_mode_is_rgmii(state->interface) &&
1503                     state->interface != PHY_INTERFACE_MODE_GMII &&
1504                     state->interface != PHY_INTERFACE_MODE_RMII)
1505                         goto unsupported;
1506                 break;
1507         case 1:
1508         case 2:
1509         case 3:
1510         case 4:
1511                 if (state->interface != PHY_INTERFACE_MODE_INTERNAL)
1512                         goto unsupported;
1513                 break;
1514         case 5:
1515                 if (!phy_interface_mode_is_rgmii(state->interface) &&
1516                     state->interface != PHY_INTERFACE_MODE_INTERNAL &&
1517                     state->interface != PHY_INTERFACE_MODE_RMII)
1518                         goto unsupported;
1519                 break;
1520         default:
1521                 bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
1522                 dev_err(ds->dev, "Unsupported port: %i\n", port);
1523                 return;
1524         }
1525
1526         gswip_phylink_set_capab(supported, state);
1527
1528         return;
1529
1530 unsupported:
1531         bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
1532         dev_err(ds->dev, "Unsupported interface '%s' for port %d\n",
1533                 phy_modes(state->interface), port);
1534 }
1535
1536 static void gswip_port_set_link(struct gswip_priv *priv, int port, bool link)
1537 {
1538         u32 mdio_phy;
1539
1540         if (link)
1541                 mdio_phy = GSWIP_MDIO_PHY_LINK_UP;
1542         else
1543                 mdio_phy = GSWIP_MDIO_PHY_LINK_DOWN;
1544
1545         gswip_mdio_mask(priv, GSWIP_MDIO_PHY_LINK_MASK, mdio_phy,
1546                         GSWIP_MDIO_PHYp(port));
1547 }
1548
1549 static void gswip_port_set_speed(struct gswip_priv *priv, int port, int speed,
1550                                  phy_interface_t interface)
1551 {
1552         u32 mdio_phy = 0, mii_cfg = 0, mac_ctrl_0 = 0;
1553
1554         switch (speed) {
1555         case SPEED_10:
1556                 mdio_phy = GSWIP_MDIO_PHY_SPEED_M10;
1557
1558                 if (interface == PHY_INTERFACE_MODE_RMII)
1559                         mii_cfg = GSWIP_MII_CFG_RATE_M50;
1560                 else
1561                         mii_cfg = GSWIP_MII_CFG_RATE_M2P5;
1562
1563                 mac_ctrl_0 = GSWIP_MAC_CTRL_0_GMII_MII;
1564                 break;
1565
1566         case SPEED_100:
1567                 mdio_phy = GSWIP_MDIO_PHY_SPEED_M100;
1568
1569                 if (interface == PHY_INTERFACE_MODE_RMII)
1570                         mii_cfg = GSWIP_MII_CFG_RATE_M50;
1571                 else
1572                         mii_cfg = GSWIP_MII_CFG_RATE_M25;
1573
1574                 mac_ctrl_0 = GSWIP_MAC_CTRL_0_GMII_MII;
1575                 break;
1576
1577         case SPEED_1000:
1578                 mdio_phy = GSWIP_MDIO_PHY_SPEED_G1;
1579
1580                 mii_cfg = GSWIP_MII_CFG_RATE_M125;
1581
1582                 mac_ctrl_0 = GSWIP_MAC_CTRL_0_GMII_RGMII;
1583                 break;
1584         }
1585
1586         gswip_mdio_mask(priv, GSWIP_MDIO_PHY_SPEED_MASK, mdio_phy,
1587                         GSWIP_MDIO_PHYp(port));
1588         gswip_mii_mask_cfg(priv, GSWIP_MII_CFG_RATE_MASK, mii_cfg, port);
1589         gswip_switch_mask(priv, GSWIP_MAC_CTRL_0_GMII_MASK, mac_ctrl_0,
1590                           GSWIP_MAC_CTRL_0p(port));
1591 }
1592
1593 static void gswip_port_set_duplex(struct gswip_priv *priv, int port, int duplex)
1594 {
1595         u32 mac_ctrl_0, mdio_phy;
1596
1597         if (duplex == DUPLEX_FULL) {
1598                 mac_ctrl_0 = GSWIP_MAC_CTRL_0_FDUP_EN;
1599                 mdio_phy = GSWIP_MDIO_PHY_FDUP_EN;
1600         } else {
1601                 mac_ctrl_0 = GSWIP_MAC_CTRL_0_FDUP_DIS;
1602                 mdio_phy = GSWIP_MDIO_PHY_FDUP_DIS;
1603         }
1604
1605         gswip_switch_mask(priv, GSWIP_MAC_CTRL_0_FDUP_MASK, mac_ctrl_0,
1606                           GSWIP_MAC_CTRL_0p(port));
1607         gswip_mdio_mask(priv, GSWIP_MDIO_PHY_FDUP_MASK, mdio_phy,
1608                         GSWIP_MDIO_PHYp(port));
1609 }
1610
1611 static void gswip_port_set_pause(struct gswip_priv *priv, int port,
1612                                  bool tx_pause, bool rx_pause)
1613 {
1614         u32 mac_ctrl_0, mdio_phy;
1615
1616         if (tx_pause && rx_pause) {
1617                 mac_ctrl_0 = GSWIP_MAC_CTRL_0_FCON_RXTX;
1618                 mdio_phy = GSWIP_MDIO_PHY_FCONTX_EN |
1619                            GSWIP_MDIO_PHY_FCONRX_EN;
1620         } else if (tx_pause) {
1621                 mac_ctrl_0 = GSWIP_MAC_CTRL_0_FCON_TX;
1622                 mdio_phy = GSWIP_MDIO_PHY_FCONTX_EN |
1623                            GSWIP_MDIO_PHY_FCONRX_DIS;
1624         } else if (rx_pause) {
1625                 mac_ctrl_0 = GSWIP_MAC_CTRL_0_FCON_RX;
1626                 mdio_phy = GSWIP_MDIO_PHY_FCONTX_DIS |
1627                            GSWIP_MDIO_PHY_FCONRX_EN;
1628         } else {
1629                 mac_ctrl_0 = GSWIP_MAC_CTRL_0_FCON_NONE;
1630                 mdio_phy = GSWIP_MDIO_PHY_FCONTX_DIS |
1631                            GSWIP_MDIO_PHY_FCONRX_DIS;
1632         }
1633
1634         gswip_switch_mask(priv, GSWIP_MAC_CTRL_0_FCON_MASK,
1635                           mac_ctrl_0, GSWIP_MAC_CTRL_0p(port));
1636         gswip_mdio_mask(priv,
1637                         GSWIP_MDIO_PHY_FCONTX_MASK |
1638                         GSWIP_MDIO_PHY_FCONRX_MASK,
1639                         mdio_phy, GSWIP_MDIO_PHYp(port));
1640 }
1641
1642 static void gswip_phylink_mac_config(struct dsa_switch *ds, int port,
1643                                      unsigned int mode,
1644                                      const struct phylink_link_state *state)
1645 {
1646         struct gswip_priv *priv = ds->priv;
1647         u32 miicfg = 0;
1648
1649         miicfg |= GSWIP_MII_CFG_LDCLKDIS;
1650
1651         switch (state->interface) {
1652         case PHY_INTERFACE_MODE_MII:
1653         case PHY_INTERFACE_MODE_INTERNAL:
1654                 miicfg |= GSWIP_MII_CFG_MODE_MIIM;
1655                 break;
1656         case PHY_INTERFACE_MODE_REVMII:
1657                 miicfg |= GSWIP_MII_CFG_MODE_MIIP;
1658                 break;
1659         case PHY_INTERFACE_MODE_RMII:
1660                 miicfg |= GSWIP_MII_CFG_MODE_RMIIM;
1661
1662                 /* Configure the RMII clock as output: */
1663                 miicfg |= GSWIP_MII_CFG_RMII_CLK;
1664                 break;
1665         case PHY_INTERFACE_MODE_RGMII:
1666         case PHY_INTERFACE_MODE_RGMII_ID:
1667         case PHY_INTERFACE_MODE_RGMII_RXID:
1668         case PHY_INTERFACE_MODE_RGMII_TXID:
1669                 miicfg |= GSWIP_MII_CFG_MODE_RGMII;
1670                 break;
1671         case PHY_INTERFACE_MODE_GMII:
1672                 miicfg |= GSWIP_MII_CFG_MODE_GMII;
1673                 break;
1674         default:
1675                 dev_err(ds->dev,
1676                         "Unsupported interface: %d\n", state->interface);
1677                 return;
1678         }
1679
1680         gswip_mii_mask_cfg(priv,
1681                            GSWIP_MII_CFG_MODE_MASK | GSWIP_MII_CFG_RMII_CLK |
1682                            GSWIP_MII_CFG_RGMII_IBS | GSWIP_MII_CFG_LDCLKDIS,
1683                            miicfg, port);
1684
1685         switch (state->interface) {
1686         case PHY_INTERFACE_MODE_RGMII_ID:
1687                 gswip_mii_mask_pcdu(priv, GSWIP_MII_PCDU_TXDLY_MASK |
1688                                           GSWIP_MII_PCDU_RXDLY_MASK, 0, port);
1689                 break;
1690         case PHY_INTERFACE_MODE_RGMII_RXID:
1691                 gswip_mii_mask_pcdu(priv, GSWIP_MII_PCDU_RXDLY_MASK, 0, port);
1692                 break;
1693         case PHY_INTERFACE_MODE_RGMII_TXID:
1694                 gswip_mii_mask_pcdu(priv, GSWIP_MII_PCDU_TXDLY_MASK, 0, port);
1695                 break;
1696         default:
1697                 break;
1698         }
1699 }
1700
1701 static void gswip_phylink_mac_link_down(struct dsa_switch *ds, int port,
1702                                         unsigned int mode,
1703                                         phy_interface_t interface)
1704 {
1705         struct gswip_priv *priv = ds->priv;
1706
1707         gswip_mii_mask_cfg(priv, GSWIP_MII_CFG_EN, 0, port);
1708
1709         if (!dsa_is_cpu_port(ds, port))
1710                 gswip_port_set_link(priv, port, false);
1711 }
1712
1713 static void gswip_phylink_mac_link_up(struct dsa_switch *ds, int port,
1714                                       unsigned int mode,
1715                                       phy_interface_t interface,
1716                                       struct phy_device *phydev,
1717                                       int speed, int duplex,
1718                                       bool tx_pause, bool rx_pause)
1719 {
1720         struct gswip_priv *priv = ds->priv;
1721
1722         if (!dsa_is_cpu_port(ds, port)) {
1723                 gswip_port_set_link(priv, port, true);
1724                 gswip_port_set_speed(priv, port, speed, interface);
1725                 gswip_port_set_duplex(priv, port, duplex);
1726                 gswip_port_set_pause(priv, port, tx_pause, rx_pause);
1727         }
1728
1729         gswip_mii_mask_cfg(priv, 0, GSWIP_MII_CFG_EN, port);
1730 }
1731
1732 static void gswip_get_strings(struct dsa_switch *ds, int port, u32 stringset,
1733                               uint8_t *data)
1734 {
1735         int i;
1736
1737         if (stringset != ETH_SS_STATS)
1738                 return;
1739
1740         for (i = 0; i < ARRAY_SIZE(gswip_rmon_cnt); i++)
1741                 strncpy(data + i * ETH_GSTRING_LEN, gswip_rmon_cnt[i].name,
1742                         ETH_GSTRING_LEN);
1743 }
1744
1745 static u32 gswip_bcm_ram_entry_read(struct gswip_priv *priv, u32 table,
1746                                     u32 index)
1747 {
1748         u32 result;
1749         int err;
1750
1751         gswip_switch_w(priv, index, GSWIP_BM_RAM_ADDR);
1752         gswip_switch_mask(priv, GSWIP_BM_RAM_CTRL_ADDR_MASK |
1753                                 GSWIP_BM_RAM_CTRL_OPMOD,
1754                               table | GSWIP_BM_RAM_CTRL_BAS,
1755                               GSWIP_BM_RAM_CTRL);
1756
1757         err = gswip_switch_r_timeout(priv, GSWIP_BM_RAM_CTRL,
1758                                      GSWIP_BM_RAM_CTRL_BAS);
1759         if (err) {
1760                 dev_err(priv->dev, "timeout while reading table: %u, index: %u",
1761                         table, index);
1762                 return 0;
1763         }
1764
1765         result = gswip_switch_r(priv, GSWIP_BM_RAM_VAL(0));
1766         result |= gswip_switch_r(priv, GSWIP_BM_RAM_VAL(1)) << 16;
1767
1768         return result;
1769 }
1770
1771 static void gswip_get_ethtool_stats(struct dsa_switch *ds, int port,
1772                                     uint64_t *data)
1773 {
1774         struct gswip_priv *priv = ds->priv;
1775         const struct gswip_rmon_cnt_desc *rmon_cnt;
1776         int i;
1777         u64 high;
1778
1779         for (i = 0; i < ARRAY_SIZE(gswip_rmon_cnt); i++) {
1780                 rmon_cnt = &gswip_rmon_cnt[i];
1781
1782                 data[i] = gswip_bcm_ram_entry_read(priv, port,
1783                                                    rmon_cnt->offset);
1784                 if (rmon_cnt->size == 2) {
1785                         high = gswip_bcm_ram_entry_read(priv, port,
1786                                                         rmon_cnt->offset + 1);
1787                         data[i] |= high << 32;
1788                 }
1789         }
1790 }
1791
1792 static int gswip_get_sset_count(struct dsa_switch *ds, int port, int sset)
1793 {
1794         if (sset != ETH_SS_STATS)
1795                 return 0;
1796
1797         return ARRAY_SIZE(gswip_rmon_cnt);
1798 }
1799
1800 static const struct dsa_switch_ops gswip_xrx200_switch_ops = {
1801         .get_tag_protocol       = gswip_get_tag_protocol,
1802         .setup                  = gswip_setup,
1803         .port_enable            = gswip_port_enable,
1804         .port_disable           = gswip_port_disable,
1805         .port_bridge_join       = gswip_port_bridge_join,
1806         .port_bridge_leave      = gswip_port_bridge_leave,
1807         .port_fast_age          = gswip_port_fast_age,
1808         .port_vlan_filtering    = gswip_port_vlan_filtering,
1809         .port_vlan_add          = gswip_port_vlan_add,
1810         .port_vlan_del          = gswip_port_vlan_del,
1811         .port_stp_state_set     = gswip_port_stp_state_set,
1812         .port_fdb_add           = gswip_port_fdb_add,
1813         .port_fdb_del           = gswip_port_fdb_del,
1814         .port_fdb_dump          = gswip_port_fdb_dump,
1815         .phylink_validate       = gswip_xrx200_phylink_validate,
1816         .phylink_mac_config     = gswip_phylink_mac_config,
1817         .phylink_mac_link_down  = gswip_phylink_mac_link_down,
1818         .phylink_mac_link_up    = gswip_phylink_mac_link_up,
1819         .get_strings            = gswip_get_strings,
1820         .get_ethtool_stats      = gswip_get_ethtool_stats,
1821         .get_sset_count         = gswip_get_sset_count,
1822 };
1823
1824 static const struct dsa_switch_ops gswip_xrx300_switch_ops = {
1825         .get_tag_protocol       = gswip_get_tag_protocol,
1826         .setup                  = gswip_setup,
1827         .port_enable            = gswip_port_enable,
1828         .port_disable           = gswip_port_disable,
1829         .port_bridge_join       = gswip_port_bridge_join,
1830         .port_bridge_leave      = gswip_port_bridge_leave,
1831         .port_fast_age          = gswip_port_fast_age,
1832         .port_vlan_filtering    = gswip_port_vlan_filtering,
1833         .port_vlan_add          = gswip_port_vlan_add,
1834         .port_vlan_del          = gswip_port_vlan_del,
1835         .port_stp_state_set     = gswip_port_stp_state_set,
1836         .port_fdb_add           = gswip_port_fdb_add,
1837         .port_fdb_del           = gswip_port_fdb_del,
1838         .port_fdb_dump          = gswip_port_fdb_dump,
1839         .phylink_validate       = gswip_xrx300_phylink_validate,
1840         .phylink_mac_config     = gswip_phylink_mac_config,
1841         .phylink_mac_link_down  = gswip_phylink_mac_link_down,
1842         .phylink_mac_link_up    = gswip_phylink_mac_link_up,
1843         .get_strings            = gswip_get_strings,
1844         .get_ethtool_stats      = gswip_get_ethtool_stats,
1845         .get_sset_count         = gswip_get_sset_count,
1846 };
1847
1848 static const struct xway_gphy_match_data xrx200a1x_gphy_data = {
1849         .fe_firmware_name = "lantiq/xrx200_phy22f_a14.bin",
1850         .ge_firmware_name = "lantiq/xrx200_phy11g_a14.bin",
1851 };
1852
1853 static const struct xway_gphy_match_data xrx200a2x_gphy_data = {
1854         .fe_firmware_name = "lantiq/xrx200_phy22f_a22.bin",
1855         .ge_firmware_name = "lantiq/xrx200_phy11g_a22.bin",
1856 };
1857
1858 static const struct xway_gphy_match_data xrx300_gphy_data = {
1859         .fe_firmware_name = "lantiq/xrx300_phy22f_a21.bin",
1860         .ge_firmware_name = "lantiq/xrx300_phy11g_a21.bin",
1861 };
1862
1863 static const struct of_device_id xway_gphy_match[] = {
1864         { .compatible = "lantiq,xrx200-gphy-fw", .data = NULL },
1865         { .compatible = "lantiq,xrx200a1x-gphy-fw", .data = &xrx200a1x_gphy_data },
1866         { .compatible = "lantiq,xrx200a2x-gphy-fw", .data = &xrx200a2x_gphy_data },
1867         { .compatible = "lantiq,xrx300-gphy-fw", .data = &xrx300_gphy_data },
1868         { .compatible = "lantiq,xrx330-gphy-fw", .data = &xrx300_gphy_data },
1869         {},
1870 };
1871
1872 static int gswip_gphy_fw_load(struct gswip_priv *priv, struct gswip_gphy_fw *gphy_fw)
1873 {
1874         struct device *dev = priv->dev;
1875         const struct firmware *fw;
1876         void *fw_addr;
1877         dma_addr_t dma_addr;
1878         dma_addr_t dev_addr;
1879         size_t size;
1880         int ret;
1881
1882         ret = clk_prepare_enable(gphy_fw->clk_gate);
1883         if (ret)
1884                 return ret;
1885
1886         reset_control_assert(gphy_fw->reset);
1887
1888         ret = request_firmware(&fw, gphy_fw->fw_name, dev);
1889         if (ret) {
1890                 dev_err(dev, "failed to load firmware: %s, error: %i\n",
1891                         gphy_fw->fw_name, ret);
1892                 return ret;
1893         }
1894
1895         /* GPHY cores need the firmware code in a persistent and contiguous
1896          * memory area with a 16 kB boundary aligned start address.
1897          */
1898         size = fw->size + XRX200_GPHY_FW_ALIGN;
1899
1900         fw_addr = dmam_alloc_coherent(dev, size, &dma_addr, GFP_KERNEL);
1901         if (fw_addr) {
1902                 fw_addr = PTR_ALIGN(fw_addr, XRX200_GPHY_FW_ALIGN);
1903                 dev_addr = ALIGN(dma_addr, XRX200_GPHY_FW_ALIGN);
1904                 memcpy(fw_addr, fw->data, fw->size);
1905         } else {
1906                 dev_err(dev, "failed to alloc firmware memory\n");
1907                 release_firmware(fw);
1908                 return -ENOMEM;
1909         }
1910
1911         release_firmware(fw);
1912
1913         ret = regmap_write(priv->rcu_regmap, gphy_fw->fw_addr_offset, dev_addr);
1914         if (ret)
1915                 return ret;
1916
1917         reset_control_deassert(gphy_fw->reset);
1918
1919         return ret;
1920 }
1921
1922 static int gswip_gphy_fw_probe(struct gswip_priv *priv,
1923                                struct gswip_gphy_fw *gphy_fw,
1924                                struct device_node *gphy_fw_np, int i)
1925 {
1926         struct device *dev = priv->dev;
1927         u32 gphy_mode;
1928         int ret;
1929         char gphyname[10];
1930
1931         snprintf(gphyname, sizeof(gphyname), "gphy%d", i);
1932
1933         gphy_fw->clk_gate = devm_clk_get(dev, gphyname);
1934         if (IS_ERR(gphy_fw->clk_gate)) {
1935                 dev_err(dev, "Failed to lookup gate clock\n");
1936                 return PTR_ERR(gphy_fw->clk_gate);
1937         }
1938
1939         ret = of_property_read_u32(gphy_fw_np, "reg", &gphy_fw->fw_addr_offset);
1940         if (ret)
1941                 return ret;
1942
1943         ret = of_property_read_u32(gphy_fw_np, "lantiq,gphy-mode", &gphy_mode);
1944         /* Default to GE mode */
1945         if (ret)
1946                 gphy_mode = GPHY_MODE_GE;
1947
1948         switch (gphy_mode) {
1949         case GPHY_MODE_FE:
1950                 gphy_fw->fw_name = priv->gphy_fw_name_cfg->fe_firmware_name;
1951                 break;
1952         case GPHY_MODE_GE:
1953                 gphy_fw->fw_name = priv->gphy_fw_name_cfg->ge_firmware_name;
1954                 break;
1955         default:
1956                 dev_err(dev, "Unknown GPHY mode %d\n", gphy_mode);
1957                 return -EINVAL;
1958         }
1959
1960         gphy_fw->reset = of_reset_control_array_get_exclusive(gphy_fw_np);
1961         if (IS_ERR(gphy_fw->reset)) {
1962                 if (PTR_ERR(gphy_fw->reset) != -EPROBE_DEFER)
1963                         dev_err(dev, "Failed to lookup gphy reset\n");
1964                 return PTR_ERR(gphy_fw->reset);
1965         }
1966
1967         return gswip_gphy_fw_load(priv, gphy_fw);
1968 }
1969
1970 static void gswip_gphy_fw_remove(struct gswip_priv *priv,
1971                                  struct gswip_gphy_fw *gphy_fw)
1972 {
1973         int ret;
1974
1975         /* check if the device was fully probed */
1976         if (!gphy_fw->fw_name)
1977                 return;
1978
1979         ret = regmap_write(priv->rcu_regmap, gphy_fw->fw_addr_offset, 0);
1980         if (ret)
1981                 dev_err(priv->dev, "can not reset GPHY FW pointer");
1982
1983         clk_disable_unprepare(gphy_fw->clk_gate);
1984
1985         reset_control_put(gphy_fw->reset);
1986 }
1987
1988 static int gswip_gphy_fw_list(struct gswip_priv *priv,
1989                               struct device_node *gphy_fw_list_np, u32 version)
1990 {
1991         struct device *dev = priv->dev;
1992         struct device_node *gphy_fw_np;
1993         const struct of_device_id *match;
1994         int err;
1995         int i = 0;
1996
1997         /* The VRX200 rev 1.1 uses the GSWIP 2.0 and needs the older
1998          * GPHY firmware. The VRX200 rev 1.2 uses the GSWIP 2.1 and also
1999          * needs a different GPHY firmware.
2000          */
2001         if (of_device_is_compatible(gphy_fw_list_np, "lantiq,xrx200-gphy-fw")) {
2002                 switch (version) {
2003                 case GSWIP_VERSION_2_0:
2004                         priv->gphy_fw_name_cfg = &xrx200a1x_gphy_data;
2005                         break;
2006                 case GSWIP_VERSION_2_1:
2007                         priv->gphy_fw_name_cfg = &xrx200a2x_gphy_data;
2008                         break;
2009                 default:
2010                         dev_err(dev, "unknown GSWIP version: 0x%x", version);
2011                         return -ENOENT;
2012                 }
2013         }
2014
2015         match = of_match_node(xway_gphy_match, gphy_fw_list_np);
2016         if (match && match->data)
2017                 priv->gphy_fw_name_cfg = match->data;
2018
2019         if (!priv->gphy_fw_name_cfg) {
2020                 dev_err(dev, "GPHY compatible type not supported");
2021                 return -ENOENT;
2022         }
2023
2024         priv->num_gphy_fw = of_get_available_child_count(gphy_fw_list_np);
2025         if (!priv->num_gphy_fw)
2026                 return -ENOENT;
2027
2028         priv->rcu_regmap = syscon_regmap_lookup_by_phandle(gphy_fw_list_np,
2029                                                            "lantiq,rcu");
2030         if (IS_ERR(priv->rcu_regmap))
2031                 return PTR_ERR(priv->rcu_regmap);
2032
2033         priv->gphy_fw = devm_kmalloc_array(dev, priv->num_gphy_fw,
2034                                            sizeof(*priv->gphy_fw),
2035                                            GFP_KERNEL | __GFP_ZERO);
2036         if (!priv->gphy_fw)
2037                 return -ENOMEM;
2038
2039         for_each_available_child_of_node(gphy_fw_list_np, gphy_fw_np) {
2040                 err = gswip_gphy_fw_probe(priv, &priv->gphy_fw[i],
2041                                           gphy_fw_np, i);
2042                 if (err)
2043                         goto remove_gphy;
2044                 i++;
2045         }
2046
2047         /* The standalone PHY11G requires 300ms to be fully
2048          * initialized and ready for any MDIO communication after being
2049          * taken out of reset. For the SoC-internal GPHY variant there
2050          * is no (known) documentation for the minimum time after a
2051          * reset. Use the same value as for the standalone variant as
2052          * some users have reported internal PHYs not being detected
2053          * without any delay.
2054          */
2055         msleep(300);
2056
2057         return 0;
2058
2059 remove_gphy:
2060         for (i = 0; i < priv->num_gphy_fw; i++)
2061                 gswip_gphy_fw_remove(priv, &priv->gphy_fw[i]);
2062         return err;
2063 }
2064
2065 static int gswip_probe(struct platform_device *pdev)
2066 {
2067         struct gswip_priv *priv;
2068         struct device_node *np, *mdio_np, *gphy_fw_np;
2069         struct device *dev = &pdev->dev;
2070         int err;
2071         int i;
2072         u32 version;
2073
2074         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
2075         if (!priv)
2076                 return -ENOMEM;
2077
2078         priv->gswip = devm_platform_ioremap_resource(pdev, 0);
2079         if (IS_ERR(priv->gswip))
2080                 return PTR_ERR(priv->gswip);
2081
2082         priv->mdio = devm_platform_ioremap_resource(pdev, 1);
2083         if (IS_ERR(priv->mdio))
2084                 return PTR_ERR(priv->mdio);
2085
2086         priv->mii = devm_platform_ioremap_resource(pdev, 2);
2087         if (IS_ERR(priv->mii))
2088                 return PTR_ERR(priv->mii);
2089
2090         priv->hw_info = of_device_get_match_data(dev);
2091         if (!priv->hw_info)
2092                 return -EINVAL;
2093
2094         priv->ds = devm_kzalloc(dev, sizeof(*priv->ds), GFP_KERNEL);
2095         if (!priv->ds)
2096                 return -ENOMEM;
2097
2098         priv->ds->dev = dev;
2099         priv->ds->num_ports = priv->hw_info->max_ports;
2100         priv->ds->priv = priv;
2101         priv->ds->ops = priv->hw_info->ops;
2102         priv->dev = dev;
2103         version = gswip_switch_r(priv, GSWIP_VERSION);
2104
2105         np = dev->of_node;
2106         switch (version) {
2107         case GSWIP_VERSION_2_0:
2108         case GSWIP_VERSION_2_1:
2109                 if (!of_device_is_compatible(np, "lantiq,xrx200-gswip"))
2110                         return -EINVAL;
2111                 break;
2112         case GSWIP_VERSION_2_2:
2113         case GSWIP_VERSION_2_2_ETC:
2114                 if (!of_device_is_compatible(np, "lantiq,xrx300-gswip") &&
2115                     !of_device_is_compatible(np, "lantiq,xrx330-gswip"))
2116                         return -EINVAL;
2117                 break;
2118         default:
2119                 dev_err(dev, "unknown GSWIP version: 0x%x", version);
2120                 return -ENOENT;
2121         }
2122
2123         /* bring up the mdio bus */
2124         gphy_fw_np = of_get_compatible_child(dev->of_node, "lantiq,gphy-fw");
2125         if (gphy_fw_np) {
2126                 err = gswip_gphy_fw_list(priv, gphy_fw_np, version);
2127                 of_node_put(gphy_fw_np);
2128                 if (err) {
2129                         dev_err(dev, "gphy fw probe failed\n");
2130                         return err;
2131                 }
2132         }
2133
2134         /* bring up the mdio bus */
2135         mdio_np = of_get_compatible_child(dev->of_node, "lantiq,xrx200-mdio");
2136         if (mdio_np) {
2137                 err = gswip_mdio(priv, mdio_np);
2138                 if (err) {
2139                         dev_err(dev, "mdio probe failed\n");
2140                         goto put_mdio_node;
2141                 }
2142         }
2143
2144         err = dsa_register_switch(priv->ds);
2145         if (err) {
2146                 dev_err(dev, "dsa switch register failed: %i\n", err);
2147                 goto mdio_bus;
2148         }
2149         if (!dsa_is_cpu_port(priv->ds, priv->hw_info->cpu_port)) {
2150                 dev_err(dev, "wrong CPU port defined, HW only supports port: %i",
2151                         priv->hw_info->cpu_port);
2152                 err = -EINVAL;
2153                 goto disable_switch;
2154         }
2155
2156         platform_set_drvdata(pdev, priv);
2157
2158         dev_info(dev, "probed GSWIP version %lx mod %lx\n",
2159                  (version & GSWIP_VERSION_REV_MASK) >> GSWIP_VERSION_REV_SHIFT,
2160                  (version & GSWIP_VERSION_MOD_MASK) >> GSWIP_VERSION_MOD_SHIFT);
2161         return 0;
2162
2163 disable_switch:
2164         gswip_mdio_mask(priv, GSWIP_MDIO_GLOB_ENABLE, 0, GSWIP_MDIO_GLOB);
2165         dsa_unregister_switch(priv->ds);
2166 mdio_bus:
2167         if (mdio_np)
2168                 mdiobus_unregister(priv->ds->slave_mii_bus);
2169 put_mdio_node:
2170         of_node_put(mdio_np);
2171         for (i = 0; i < priv->num_gphy_fw; i++)
2172                 gswip_gphy_fw_remove(priv, &priv->gphy_fw[i]);
2173         return err;
2174 }
2175
2176 static int gswip_remove(struct platform_device *pdev)
2177 {
2178         struct gswip_priv *priv = platform_get_drvdata(pdev);
2179         int i;
2180
2181         /* disable the switch */
2182         gswip_mdio_mask(priv, GSWIP_MDIO_GLOB_ENABLE, 0, GSWIP_MDIO_GLOB);
2183
2184         dsa_unregister_switch(priv->ds);
2185
2186         if (priv->ds->slave_mii_bus) {
2187                 mdiobus_unregister(priv->ds->slave_mii_bus);
2188                 of_node_put(priv->ds->slave_mii_bus->dev.of_node);
2189         }
2190
2191         for (i = 0; i < priv->num_gphy_fw; i++)
2192                 gswip_gphy_fw_remove(priv, &priv->gphy_fw[i]);
2193
2194         return 0;
2195 }
2196
2197 static const struct gswip_hw_info gswip_xrx200 = {
2198         .max_ports = 7,
2199         .cpu_port = 6,
2200         .ops = &gswip_xrx200_switch_ops,
2201 };
2202
2203 static const struct gswip_hw_info gswip_xrx300 = {
2204         .max_ports = 7,
2205         .cpu_port = 6,
2206         .ops = &gswip_xrx300_switch_ops,
2207 };
2208
2209 static const struct of_device_id gswip_of_match[] = {
2210         { .compatible = "lantiq,xrx200-gswip", .data = &gswip_xrx200 },
2211         { .compatible = "lantiq,xrx300-gswip", .data = &gswip_xrx300 },
2212         { .compatible = "lantiq,xrx330-gswip", .data = &gswip_xrx300 },
2213         {},
2214 };
2215 MODULE_DEVICE_TABLE(of, gswip_of_match);
2216
2217 static struct platform_driver gswip_driver = {
2218         .probe = gswip_probe,
2219         .remove = gswip_remove,
2220         .driver = {
2221                 .name = "gswip",
2222                 .of_match_table = gswip_of_match,
2223         },
2224 };
2225
2226 module_platform_driver(gswip_driver);
2227
2228 MODULE_FIRMWARE("lantiq/xrx300_phy11g_a21.bin");
2229 MODULE_FIRMWARE("lantiq/xrx300_phy22f_a21.bin");
2230 MODULE_FIRMWARE("lantiq/xrx200_phy11g_a14.bin");
2231 MODULE_FIRMWARE("lantiq/xrx200_phy11g_a22.bin");
2232 MODULE_FIRMWARE("lantiq/xrx200_phy22f_a14.bin");
2233 MODULE_FIRMWARE("lantiq/xrx200_phy22f_a22.bin");
2234 MODULE_AUTHOR("Hauke Mehrtens <hauke@hauke-m.de>");
2235 MODULE_DESCRIPTION("Lantiq / Intel GSWIP driver");
2236 MODULE_LICENSE("GPL v2");