drivers/net/ethernet/ti/cpsw.c

   1 /*
   2  * Texas Instruments Ethernet Switch Driver
   3  *
   4  * Copyright (C) 2012 Texas Instruments
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation version 2.
   9  *
  10  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  11  * kind, whether express or implied; without even the implied warranty
  12  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <linux/kernel.h>
  17 #include <linux/io.h>
  18 #include <linux/clk.h>
  19 #include <linux/timer.h>
  20 #include <linux/module.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/irqreturn.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/if_ether.h>
  25 #include <linux/etherdevice.h>
  26 #include <linux/netdevice.h>
  27 #include <linux/net_tstamp.h>
  28 #include <linux/phy.h>
  29 #include <linux/workqueue.h>
  30 #include <linux/delay.h>
  31 #include <linux/pm_runtime.h>
  32 #include <linux/of.h>
  33 #include <linux/of_net.h>
  34 #include <linux/of_device.h>
  35 #include <linux/if_vlan.h>
  36
  37 #include <linux/pinctrl/consumer.h>
  38
  39 #include "cpsw.h"
  40 #include "cpsw_ale.h"
  41 #include "cpts.h"
  42 #include "davinci_cpdma.h"
  43
  44 #define CPSW_DEBUG      (NETIF_MSG_HW           | NETIF_MSG_WOL         | \
  45                          NETIF_MSG_DRV          | NETIF_MSG_LINK        | \
  46                          NETIF_MSG_IFUP         | NETIF_MSG_INTR        | \
  47                          NETIF_MSG_PROBE        | NETIF_MSG_TIMER       | \
  48                          NETIF_MSG_IFDOWN       | NETIF_MSG_RX_ERR      | \
  49                          NETIF_MSG_TX_ERR       | NETIF_MSG_TX_DONE     | \
  50                          NETIF_MSG_PKTDATA      | NETIF_MSG_TX_QUEUED   | \
  51                          NETIF_MSG_RX_STATUS)
  52
  53 #define cpsw_info(priv, type, format, ...)              \
  54 do {                                                            \
  55         if (netif_msg_##type(priv) && net_ratelimit())          \
  56                 dev_info(priv->dev, format, ## __VA_ARGS__);    \
  57 } while (0)
  58
  59 #define cpsw_err(priv, type, format, ...)               \
  60 do {                                                            \
  61         if (netif_msg_##type(priv) && net_ratelimit())          \
  62                 dev_err(priv->dev, format, ## __VA_ARGS__);     \
  63 } while (0)
  64
  65 #define cpsw_dbg(priv, type, format, ...)               \
  66 do {                                                            \
  67         if (netif_msg_##type(priv) && net_ratelimit())          \
  68                 dev_dbg(priv->dev, format, ## __VA_ARGS__);     \
  69 } while (0)
  70
  71 #define cpsw_notice(priv, type, format, ...)            \
  72 do {                                                            \
  73         if (netif_msg_##type(priv) && net_ratelimit())          \
  74                 dev_notice(priv->dev, format, ## __VA_ARGS__);  \
  75 } while (0)
  76
  77 #define ALE_ALL_PORTS           0x7
  78
  79 #define CPSW_MAJOR_VERSION(reg)         (reg >> 8 & 0x7)
  80 #define CPSW_MINOR_VERSION(reg)         (reg & 0xff)
  81 #define CPSW_RTL_VERSION(reg)           ((reg >> 11) & 0x1f)
  82
  83 #define CPSW_VERSION_1          0x19010a
  84 #define CPSW_VERSION_2          0x19010c
  85 #define CPSW_VERSION_3          0x19010f
  86 #define CPSW_VERSION_4          0x190112
  87
  88 #define HOST_PORT_NUM           0
  89 #define SLIVER_SIZE             0x40
  90
  91 #define CPSW1_HOST_PORT_OFFSET  0x028
  92 #define CPSW1_SLAVE_OFFSET      0x050
  93 #define CPSW1_SLAVE_SIZE        0x040
  94 #define CPSW1_CPDMA_OFFSET      0x100
  95 #define CPSW1_STATERAM_OFFSET   0x200
  96 #define CPSW1_HW_STATS          0x400
  97 #define CPSW1_CPTS_OFFSET       0x500
  98 #define CPSW1_ALE_OFFSET        0x600
  99 #define CPSW1_SLIVER_OFFSET     0x700
 100
 101 #define CPSW2_HOST_PORT_OFFSET  0x108
 102 #define CPSW2_SLAVE_OFFSET      0x200
 103 #define CPSW2_SLAVE_SIZE        0x100
 104 #define CPSW2_CPDMA_OFFSET      0x800
 105 #define CPSW2_HW_STATS          0x900
 106 #define CPSW2_STATERAM_OFFSET   0xa00
 107 #define CPSW2_CPTS_OFFSET       0xc00
 108 #define CPSW2_ALE_OFFSET        0xd00
 109 #define CPSW2_SLIVER_OFFSET     0xd80
 110 #define CPSW2_BD_OFFSET         0x2000
 111
 112 #define CPDMA_RXTHRESH          0x0c0
 113 #define CPDMA_RXFREE            0x0e0
 114 #define CPDMA_TXHDP             0x00
 115 #define CPDMA_RXHDP             0x20
 116 #define CPDMA_TXCP              0x40
 117 #define CPDMA_RXCP              0x60
 118
 119 #define CPSW_POLL_WEIGHT        64
 120 #define CPSW_MIN_PACKET_SIZE    60
 121 #define CPSW_MAX_PACKET_SIZE    (1500 + 14 + 4 + 4)
 122
 123 #define RX_PRIORITY_MAPPING     0x76543210
 124 #define TX_PRIORITY_MAPPING     0x33221100
 125 #define CPDMA_TX_PRIORITY_MAP   0x76543210
 126
 127 #define CPSW_VLAN_AWARE         BIT(1)
 128 #define CPSW_ALE_VLAN_AWARE     1
 129
 130 #define CPSW_FIFO_NORMAL_MODE           (0 << 16)
 131 #define CPSW_FIFO_DUAL_MAC_MODE         (1 << 16)
 132 #define CPSW_FIFO_RATE_LIMIT_MODE       (2 << 16)
 133
 134 #define CPSW_INTPACEEN          (0x3f << 16)
 135 #define CPSW_INTPRESCALE_MASK   (0x7FF << 0)
 136 #define CPSW_CMINTMAX_CNT       63
 137 #define CPSW_CMINTMIN_CNT       2
 138 #define CPSW_CMINTMAX_INTVL     (1000 / CPSW_CMINTMIN_CNT)
 139 #define CPSW_CMINTMIN_INTVL     ((1000 / CPSW_CMINTMAX_CNT) + 1)
 140
 141 #define cpsw_enable_irq(priv)   \
 142         do {                    \
 143                 u32 i;          \
 144                 for (i = 0; i < priv->num_irqs; i++) \
 145                         enable_irq(priv->irqs_table[i]); \
 146         } while (0)
 147 #define cpsw_disable_irq(priv)  \
 148         do {                    \
 149                 u32 i;          \
 150                 for (i = 0; i < priv->num_irqs; i++) \
 151                         disable_irq_nosync(priv->irqs_table[i]); \
 152         } while (0)
 153
 154 #define cpsw_slave_index(priv)                          \
 155                 ((priv->data.dual_emac) ? priv->emac_port :     \
 156                 priv->data.active_slave)
 157
 158 static int debug_level;
 159 module_param(debug_level, int, 0);
 160 MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)");
 161
 162 static int ale_ageout = 10;
 163 module_param(ale_ageout, int, 0);
 164 MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)");
 165
 166 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
 167 module_param(rx_packet_max, int, 0);
 168 MODULE_PARM_DESC(rx_packet_max, "maximum receive packet size (bytes)");
 169
 170 struct cpsw_wr_regs {
 171         u32     id_ver;
 172         u32     soft_reset;
 173         u32     control;
 174         u32     int_control;
 175         u32     rx_thresh_en;
 176         u32     rx_en;
 177         u32     tx_en;
 178         u32     misc_en;
 179         u32     mem_allign1[8];
 180         u32     rx_thresh_stat;
 181         u32     rx_stat;
 182         u32     tx_stat;
 183         u32     misc_stat;
 184         u32     mem_allign2[8];
 185         u32     rx_imax;
 186         u32     tx_imax;
 187
 188 };
 189
 190 struct cpsw_ss_regs {
 191         u32     id_ver;
 192         u32     control;
 193         u32     soft_reset;
 194         u32     stat_port_en;
 195         u32     ptype;
 196         u32     soft_idle;
 197         u32     thru_rate;
 198         u32     gap_thresh;
 199         u32     tx_start_wds;
 200         u32     flow_control;
 201         u32     vlan_ltype;
 202         u32     ts_ltype;
 203         u32     dlr_ltype;
 204 };
 205
 206 /* CPSW_PORT_V1 */
 207 #define CPSW1_MAX_BLKS      0x00 /* Maximum FIFO Blocks */
 208 #define CPSW1_BLK_CNT       0x04 /* FIFO Block Usage Count (Read Only) */
 209 #define CPSW1_TX_IN_CTL     0x08 /* Transmit FIFO Control */
 210 #define CPSW1_PORT_VLAN     0x0c /* VLAN Register */
 211 #define CPSW1_TX_PRI_MAP    0x10 /* Tx Header Priority to Switch Pri Mapping */
 212 #define CPSW1_TS_CTL        0x14 /* Time Sync Control */
 213 #define CPSW1_TS_SEQ_LTYPE  0x18 /* Time Sync Sequence ID Offset and Msg Type */
 214 #define CPSW1_TS_VLAN       0x1c /* Time Sync VLAN1 and VLAN2 */
 215
 216 /* CPSW_PORT_V2 */
 217 #define CPSW2_CONTROL       0x00 /* Control Register */
 218 #define CPSW2_MAX_BLKS      0x08 /* Maximum FIFO Blocks */
 219 #define CPSW2_BLK_CNT       0x0c /* FIFO Block Usage Count (Read Only) */
 220 #define CPSW2_TX_IN_CTL     0x10 /* Transmit FIFO Control */
 221 #define CPSW2_PORT_VLAN     0x14 /* VLAN Register */
 222 #define CPSW2_TX_PRI_MAP    0x18 /* Tx Header Priority to Switch Pri Mapping */
 223 #define CPSW2_TS_SEQ_MTYPE  0x1c /* Time Sync Sequence ID Offset and Msg Type */
 224
 225 /* CPSW_PORT_V1 and V2 */
 226 #define SA_LO               0x20 /* CPGMAC_SL Source Address Low */
 227 #define SA_HI               0x24 /* CPGMAC_SL Source Address High */
 228 #define SEND_PERCENT        0x28 /* Transmit Queue Send Percentages */
 229
 230 /* CPSW_PORT_V2 only */
 231 #define RX_DSCP_PRI_MAP0    0x30 /* Rx DSCP Priority to Rx Packet Mapping */
 232 #define RX_DSCP_PRI_MAP1    0x34 /* Rx DSCP Priority to Rx Packet Mapping */
 233 #define RX_DSCP_PRI_MAP2    0x38 /* Rx DSCP Priority to Rx Packet Mapping */
 234 #define RX_DSCP_PRI_MAP3    0x3c /* Rx DSCP Priority to Rx Packet Mapping */
 235 #define RX_DSCP_PRI_MAP4    0x40 /* Rx DSCP Priority to Rx Packet Mapping */
 236 #define RX_DSCP_PRI_MAP5    0x44 /* Rx DSCP Priority to Rx Packet Mapping */
 237 #define RX_DSCP_PRI_MAP6    0x48 /* Rx DSCP Priority to Rx Packet Mapping */
 238 #define RX_DSCP_PRI_MAP7    0x4c /* Rx DSCP Priority to Rx Packet Mapping */
 239
 240 /* Bit definitions for the CPSW2_CONTROL register */
 241 #define PASS_PRI_TAGGED     (1<<24) /* Pass Priority Tagged */
 242 #define VLAN_LTYPE2_EN      (1<<21) /* VLAN LTYPE 2 enable */
 243 #define VLAN_LTYPE1_EN      (1<<20) /* VLAN LTYPE 1 enable */
 244 #define DSCP_PRI_EN         (1<<16) /* DSCP Priority Enable */
 245 #define TS_320              (1<<14) /* Time Sync Dest Port 320 enable */
 246 #define TS_319              (1<<13) /* Time Sync Dest Port 319 enable */
 247 #define TS_132              (1<<12) /* Time Sync Dest IP Addr 132 enable */
 248 #define TS_131              (1<<11) /* Time Sync Dest IP Addr 131 enable */
 249 #define TS_130              (1<<10) /* Time Sync Dest IP Addr 130 enable */
 250 #define TS_129              (1<<9)  /* Time Sync Dest IP Addr 129 enable */
 251 #define TS_TTL_NONZERO      (1<<8)  /* Time Sync Time To Live Non-zero enable */
 252 #define TS_ANNEX_F_EN       (1<<6)  /* Time Sync Annex F enable */
 253 #define TS_ANNEX_D_EN       (1<<4)  /* Time Sync Annex D enable */
 254 #define TS_LTYPE2_EN        (1<<3)  /* Time Sync LTYPE 2 enable */
 255 #define TS_LTYPE1_EN        (1<<2)  /* Time Sync LTYPE 1 enable */
 256 #define TS_TX_EN            (1<<1)  /* Time Sync Transmit Enable */
 257 #define TS_RX_EN            (1<<0)  /* Time Sync Receive Enable */
 258
 259 #define CTRL_V2_TS_BITS \
 260         (TS_320 | TS_319 | TS_132 | TS_131 | TS_130 | TS_129 |\
 261          TS_TTL_NONZERO  | TS_ANNEX_D_EN | TS_LTYPE1_EN)
 262
 263 #define CTRL_V2_ALL_TS_MASK (CTRL_V2_TS_BITS | TS_TX_EN | TS_RX_EN)
 264 #define CTRL_V2_TX_TS_BITS  (CTRL_V2_TS_BITS | TS_TX_EN)
 265 #define CTRL_V2_RX_TS_BITS  (CTRL_V2_TS_BITS | TS_RX_EN)
 266
 267
 268 #define CTRL_V3_TS_BITS \
 269         (TS_320 | TS_319 | TS_132 | TS_131 | TS_130 | TS_129 |\
 270          TS_TTL_NONZERO | TS_ANNEX_F_EN | TS_ANNEX_D_EN |\
 271          TS_LTYPE1_EN)
 272
 273 #define CTRL_V3_ALL_TS_MASK (CTRL_V3_TS_BITS | TS_TX_EN | TS_RX_EN)
 274 #define CTRL_V3_TX_TS_BITS  (CTRL_V3_TS_BITS | TS_TX_EN)
 275 #define CTRL_V3_RX_TS_BITS  (CTRL_V3_TS_BITS | TS_RX_EN)
 276
 277 /* Bit definitions for the CPSW2_TS_SEQ_MTYPE register */
 278 #define TS_SEQ_ID_OFFSET_SHIFT   (16)    /* Time Sync Sequence ID Offset */
 279 #define TS_SEQ_ID_OFFSET_MASK    (0x3f)
 280 #define TS_MSG_TYPE_EN_SHIFT     (0)     /* Time Sync Message Type Enable */
 281 #define TS_MSG_TYPE_EN_MASK      (0xffff)
 282
 283 /* The PTP event messages - Sync, Delay_Req, Pdelay_Req, and Pdelay_Resp. */
 284 #define EVENT_MSG_BITS ((1<<0) | (1<<1) | (1<<2) | (1<<3))
 285
 286 /* Bit definitions for the CPSW1_TS_CTL register */
 287 #define CPSW_V1_TS_RX_EN                BIT(0)
 288 #define CPSW_V1_TS_TX_EN                BIT(4)
 289 #define CPSW_V1_MSG_TYPE_OFS            16
 290
 291 /* Bit definitions for the CPSW1_TS_SEQ_LTYPE register */
 292 #define CPSW_V1_SEQ_ID_OFS_SHIFT        16
 293
 294 struct cpsw_host_regs {
 295         u32     max_blks;
 296         u32     blk_cnt;
 297         u32     tx_in_ctl;
 298         u32     port_vlan;
 299         u32     tx_pri_map;
 300         u32     cpdma_tx_pri_map;
 301         u32     cpdma_rx_chan_map;
 302 };
 303
 304 struct cpsw_sliver_regs {
 305         u32     id_ver;
 306         u32     mac_control;
 307         u32     mac_status;
 308         u32     soft_reset;
 309         u32     rx_maxlen;
 310         u32     __reserved_0;
 311         u32     rx_pause;
 312         u32     tx_pause;
 313         u32     __reserved_1;
 314         u32     rx_pri_map;
 315 };
 316
 317 struct cpsw_hw_stats {
 318         u32     rxgoodframes;
 319         u32     rxbroadcastframes;
 320         u32     rxmulticastframes;
 321         u32     rxpauseframes;
 322         u32     rxcrcerrors;
 323         u32     rxaligncodeerrors;
 324         u32     rxoversizedframes;
 325         u32     rxjabberframes;
 326         u32     rxundersizedframes;
 327         u32     rxfragments;
 328         u32     __pad_0[2];
 329         u32     rxoctets;
 330         u32     txgoodframes;
 331         u32     txbroadcastframes;
 332         u32     txmulticastframes;
 333         u32     txpauseframes;
 334         u32     txdeferredframes;
 335         u32     txcollisionframes;
 336         u32     txsinglecollframes;
 337         u32     txmultcollframes;
 338         u32     txexcessivecollisions;
 339         u32     txlatecollisions;
 340         u32     txunderrun;
 341         u32     txcarriersenseerrors;
 342         u32     txoctets;
 343         u32     octetframes64;
 344         u32     octetframes65t127;
 345         u32     octetframes128t255;
 346         u32     octetframes256t511;
 347         u32     octetframes512t1023;
 348         u32     octetframes1024tup;
 349         u32     netoctets;
 350         u32     rxsofoverruns;
 351         u32     rxmofoverruns;
 352         u32     rxdmaoverruns;
 353 };
 354
 355 struct cpsw_slave {
 356         void __iomem                    *regs;
 357         struct cpsw_sliver_regs __iomem *sliver;
 358         int                             slave_num;
 359         u32                             mac_control;
 360         struct cpsw_slave_data          *data;
 361         struct phy_device               *phy;
 362         struct net_device               *ndev;
 363         u32                             port_vlan;
 364         u32                             open_stat;
 365 };
 366
 367 static inline u32 slave_read(struct cpsw_slave *slave, u32 offset)
 368 {
 369         return __raw_readl(slave->regs + offset);
 370 }
 371
 372 static inline void slave_write(struct cpsw_slave *slave, u32 val, u32 offset)
 373 {
 374         __raw_writel(val, slave->regs + offset);
 375 }
 376
 377 struct cpsw_priv {
 378         spinlock_t                      lock;
 379         struct platform_device          *pdev;
 380         struct net_device               *ndev;
 381         struct napi_struct              napi;
 382         struct device                   *dev;
 383         struct cpsw_platform_data       data;
 384         struct cpsw_ss_regs __iomem     *regs;
 385         struct cpsw_wr_regs __iomem     *wr_regs;
 386         u8 __iomem                      *hw_stats;
 387         struct cpsw_host_regs __iomem   *host_port_regs;
 388         u32                             msg_enable;
 389         u32                             version;
 390         u32                             coal_intvl;
 391         u32                             bus_freq_mhz;
 392         int                             rx_packet_max;
 393         int                             host_port;
 394         struct clk                      *clk;
 395         u8                              mac_addr[ETH_ALEN];
 396         struct cpsw_slave               *slaves;
 397         struct cpdma_ctlr               *dma;
 398         struct cpdma_chan               *txch, *rxch;
 399         struct cpsw_ale                 *ale;
 400         bool                            rx_pause;
 401         bool                            tx_pause;
 402         /* snapshot of IRQ numbers */
 403         u32 irqs_table[4];
 404         u32 num_irqs;
 405         bool irq_enabled;
 406         struct cpts *cpts;
 407         u32 emac_port;
 408 };
 409
 410 struct cpsw_stats {
 411         char stat_string[ETH_GSTRING_LEN];
 412         int type;
 413         int sizeof_stat;
 414         int stat_offset;
 415 };
 416
 417 enum {
 418         CPSW_STATS,
 419         CPDMA_RX_STATS,
 420         CPDMA_TX_STATS,
 421 };
 422
 423 #define CPSW_STAT(m)            CPSW_STATS,                             \
 424                                 sizeof(((struct cpsw_hw_stats *)0)->m), \
 425                                 offsetof(struct cpsw_hw_stats, m)
 426 #define CPDMA_RX_STAT(m)        CPDMA_RX_STATS,                            \
 427                                 sizeof(((struct cpdma_chan_stats *)0)->m), \
 428                                 offsetof(struct cpdma_chan_stats, m)
 429 #define CPDMA_TX_STAT(m)        CPDMA_TX_STATS,                            \
 430                                 sizeof(((struct cpdma_chan_stats *)0)->m), \
 431                                 offsetof(struct cpdma_chan_stats, m)
 432
 433 static const struct cpsw_stats cpsw_gstrings_stats[] = {
 434         { "Good Rx Frames", CPSW_STAT(rxgoodframes) },
 435         { "Broadcast Rx Frames", CPSW_STAT(rxbroadcastframes) },
 436         { "Multicast Rx Frames", CPSW_STAT(rxmulticastframes) },
 437         { "Pause Rx Frames", CPSW_STAT(rxpauseframes) },
 438         { "Rx CRC Errors", CPSW_STAT(rxcrcerrors) },
 439         { "Rx Align/Code Errors", CPSW_STAT(rxaligncodeerrors) },
 440         { "Oversize Rx Frames", CPSW_STAT(rxoversizedframes) },
 441         { "Rx Jabbers", CPSW_STAT(rxjabberframes) },
 442         { "Undersize (Short) Rx Frames", CPSW_STAT(rxundersizedframes) },
 443         { "Rx Fragments", CPSW_STAT(rxfragments) },
 444         { "Rx Octets", CPSW_STAT(rxoctets) },
 445         { "Good Tx Frames", CPSW_STAT(txgoodframes) },
 446         { "Broadcast Tx Frames", CPSW_STAT(txbroadcastframes) },
 447         { "Multicast Tx Frames", CPSW_STAT(txmulticastframes) },
 448         { "Pause Tx Frames", CPSW_STAT(txpauseframes) },
 449         { "Deferred Tx Frames", CPSW_STAT(txdeferredframes) },
 450         { "Collisions", CPSW_STAT(txcollisionframes) },
 451         { "Single Collision Tx Frames", CPSW_STAT(txsinglecollframes) },
 452         { "Multiple Collision Tx Frames", CPSW_STAT(txmultcollframes) },
 453         { "Excessive Collisions", CPSW_STAT(txexcessivecollisions) },
 454         { "Late Collisions", CPSW_STAT(txlatecollisions) },
 455         { "Tx Underrun", CPSW_STAT(txunderrun) },
 456         { "Carrier Sense Errors", CPSW_STAT(txcarriersenseerrors) },
 457         { "Tx Octets", CPSW_STAT(txoctets) },
 458         { "Rx + Tx 64 Octet Frames", CPSW_STAT(octetframes64) },
 459         { "Rx + Tx 65-127 Octet Frames", CPSW_STAT(octetframes65t127) },
 460         { "Rx + Tx 128-255 Octet Frames", CPSW_STAT(octetframes128t255) },
 461         { "Rx + Tx 256-511 Octet Frames", CPSW_STAT(octetframes256t511) },
 462         { "Rx + Tx 512-1023 Octet Frames", CPSW_STAT(octetframes512t1023) },
 463         { "Rx + Tx 1024-Up Octet Frames", CPSW_STAT(octetframes1024tup) },
 464         { "Net Octets", CPSW_STAT(netoctets) },
 465         { "Rx Start of Frame Overruns", CPSW_STAT(rxsofoverruns) },
 466         { "Rx Middle of Frame Overruns", CPSW_STAT(rxmofoverruns) },
 467         { "Rx DMA Overruns", CPSW_STAT(rxdmaoverruns) },
 468         { "Rx DMA chan: head_enqueue", CPDMA_RX_STAT(head_enqueue) },
 469         { "Rx DMA chan: tail_enqueue", CPDMA_RX_STAT(tail_enqueue) },
 470         { "Rx DMA chan: pad_enqueue", CPDMA_RX_STAT(pad_enqueue) },
 471         { "Rx DMA chan: misqueued", CPDMA_RX_STAT(misqueued) },
 472         { "Rx DMA chan: desc_alloc_fail", CPDMA_RX_STAT(desc_alloc_fail) },
 473         { "Rx DMA chan: pad_alloc_fail", CPDMA_RX_STAT(pad_alloc_fail) },
 474         { "Rx DMA chan: runt_receive_buf", CPDMA_RX_STAT(runt_receive_buff) },
 475         { "Rx DMA chan: runt_transmit_buf", CPDMA_RX_STAT(runt_transmit_buff) },
 476         { "Rx DMA chan: empty_dequeue", CPDMA_RX_STAT(empty_dequeue) },
 477         { "Rx DMA chan: busy_dequeue", CPDMA_RX_STAT(busy_dequeue) },
 478         { "Rx DMA chan: good_dequeue", CPDMA_RX_STAT(good_dequeue) },
 479         { "Rx DMA chan: requeue", CPDMA_RX_STAT(requeue) },
 480         { "Rx DMA chan: teardown_dequeue", CPDMA_RX_STAT(teardown_dequeue) },
 481         { "Tx DMA chan: head_enqueue", CPDMA_TX_STAT(head_enqueue) },
 482         { "Tx DMA chan: tail_enqueue", CPDMA_TX_STAT(tail_enqueue) },
 483         { "Tx DMA chan: pad_enqueue", CPDMA_TX_STAT(pad_enqueue) },
 484         { "Tx DMA chan: misqueued", CPDMA_TX_STAT(misqueued) },
 485         { "Tx DMA chan: desc_alloc_fail", CPDMA_TX_STAT(desc_alloc_fail) },
 486         { "Tx DMA chan: pad_alloc_fail", CPDMA_TX_STAT(pad_alloc_fail) },
 487         { "Tx DMA chan: runt_receive_buf", CPDMA_TX_STAT(runt_receive_buff) },
 488         { "Tx DMA chan: runt_transmit_buf", CPDMA_TX_STAT(runt_transmit_buff) },
 489         { "Tx DMA chan: empty_dequeue", CPDMA_TX_STAT(empty_dequeue) },
 490         { "Tx DMA chan: busy_dequeue", CPDMA_TX_STAT(busy_dequeue) },
 491         { "Tx DMA chan: good_dequeue", CPDMA_TX_STAT(good_dequeue) },
 492         { "Tx DMA chan: requeue", CPDMA_TX_STAT(requeue) },
 493         { "Tx DMA chan: teardown_dequeue", CPDMA_TX_STAT(teardown_dequeue) },
 494 };
 495
 496 #define CPSW_STATS_LEN  ARRAY_SIZE(cpsw_gstrings_stats)
 497
 498 #define napi_to_priv(napi)      container_of(napi, struct cpsw_priv, napi)
 499 #define for_each_slave(priv, func, arg...)                              \
 500         do {                                                            \
 501                 struct cpsw_slave *slave;                               \
 502                 int n;                                                  \
 503                 if (priv->data.dual_emac)                               \
 504                         (func)((priv)->slaves + priv->emac_port, ##arg);\
 505                 else                                                    \
 506                         for (n = (priv)->data.slaves,                   \
 507                                         slave = (priv)->slaves;         \
 508                                         n; n--)                         \
 509                                 (func)(slave++, ##arg);                 \
 510         } while (0)
 511 #define cpsw_get_slave_ndev(priv, __slave_no__)                         \
 512         (priv->slaves[__slave_no__].ndev)
 513 #define cpsw_get_slave_priv(priv, __slave_no__)                         \
 514         ((priv->slaves[__slave_no__].ndev) ?                            \
 515                 netdev_priv(priv->slaves[__slave_no__].ndev) : NULL)    \
 516
 517 #define cpsw_dual_emac_src_port_detect(status, priv, ndev, skb)         \
 518         do {                                                            \
 519                 if (!priv->data.dual_emac)                              \
 520                         break;                                          \
 521                 if (CPDMA_RX_SOURCE_PORT(status) == 1) {                \
 522                         ndev = cpsw_get_slave_ndev(priv, 0);            \
 523                         priv = netdev_priv(ndev);                       \
 524                         skb->dev = ndev;                                \
 525                 } else if (CPDMA_RX_SOURCE_PORT(status) == 2) {         \
 526                         ndev = cpsw_get_slave_ndev(priv, 1);            \
 527                         priv = netdev_priv(ndev);                       \
 528                         skb->dev = ndev;                                \
 529                 }                                                       \
 530         } while (0)
 531 #define cpsw_add_mcast(priv, addr)                                      \
 532         do {                                                            \
 533                 if (priv->data.dual_emac) {                             \
 534                         struct cpsw_slave *slave = priv->slaves +       \
 535                                                 priv->emac_port;        \
 536                         int slave_port = cpsw_get_slave_port(priv,      \
 537                                                 slave->slave_num);      \
 538                         cpsw_ale_add_mcast(priv->ale, addr,             \
 539                                 1 << slave_port | 1 << priv->host_port, \
 540                                 ALE_VLAN, slave->port_vlan, 0);         \
 541                 } else {                                                \
 542                         cpsw_ale_add_mcast(priv->ale, addr,             \
 543                                 ALE_ALL_PORTS << priv->host_port,       \
 544                                 0, 0, 0);                               \
 545                 }                                                       \
 546         } while (0)
 547
 548 static inline int cpsw_get_slave_port(struct cpsw_priv *priv, u32 slave_num)
 549 {
 550         if (priv->host_port == 0)
 551                 return slave_num + 1;
 552         else
 553                 return slave_num;
 554 }
 555
 556 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
 557 {
 558         struct cpsw_priv *priv = netdev_priv(ndev);
 559         struct cpsw_ale *ale = priv->ale;
 560         int i;
 561
 562         if (priv->data.dual_emac) {
 563                 bool flag = false;
 564
 565                 /* Enabling promiscuous mode for one interface will be
 566                  * common for both the interface as the interface shares
 567                  * the same hardware resource.
 568                  */
 569                 for (i = 0; i < priv->data.slaves; i++)
 570                         if (priv->slaves[i].ndev->flags & IFF_PROMISC)
 571                                 flag = true;
 572
 573                 if (!enable && flag) {
 574                         enable = true;
 575                         dev_err(&ndev->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
 576                 }
 577
 578                 if (enable) {
 579                         /* Enable Bypass */
 580                         cpsw_ale_control_set(ale, 0, ALE_BYPASS, 1);
 581
 582                         dev_dbg(&ndev->dev, "promiscuity enabled\n");
 583                 } else {
 584                         /* Disable Bypass */
 585                         cpsw_ale_control_set(ale, 0, ALE_BYPASS, 0);
 586                         dev_dbg(&ndev->dev, "promiscuity disabled\n");
 587                 }
 588         } else {
 589                 if (enable) {
 590                         unsigned long timeout = jiffies + HZ;
 591
 592                         /* Disable Learn for all ports (host is port 0 and slaves are port 1 and up */
 593                         for (i = 0; i <= priv->data.slaves; i++) {
 594                                 cpsw_ale_control_set(ale, i,
 595                                                      ALE_PORT_NOLEARN, 1);
 596                                 cpsw_ale_control_set(ale, i,
 597                                                      ALE_PORT_NO_SA_UPDATE, 1);
 598                         }
 599
 600                         /* Clear All Untouched entries */
 601                         cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
 602                         do {
 603                                 cpu_relax();
 604                                 if (cpsw_ale_control_get(ale, 0, ALE_AGEOUT))
 605                                         break;
 606                         } while (time_after(timeout, jiffies));
 607                         cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
 608
 609                         /* Clear all mcast from ALE */
 610                         cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS <<
 611                                                  priv->host_port, -1);
 612
 613                         /* Flood All Unicast Packets to Host port */
 614                         cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1);
 615                         dev_dbg(&ndev->dev, "promiscuity enabled\n");
 616                 } else {
 617                         /* Don't Flood All Unicast Packets to Host port */
 618                         cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);
 619
 620                         /* Enable Learn for all ports (host is port 0 and slaves are port 1 and up */
 621                         for (i = 0; i <= priv->data.slaves; i++) {
 622                                 cpsw_ale_control_set(ale, i,
 623                                                      ALE_PORT_NOLEARN, 0);
 624                                 cpsw_ale_control_set(ale, i,
 625                                                      ALE_PORT_NO_SA_UPDATE, 0);
 626                         }
 627                         dev_dbg(&ndev->dev, "promiscuity disabled\n");
 628                 }
 629         }
 630 }
 631
 632 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
 633 {
 634         struct cpsw_priv *priv = netdev_priv(ndev);
 635         int vid;
 636
 637         if (priv->data.dual_emac)
 638                 vid = priv->slaves[priv->emac_port].port_vlan;
 639         else
 640                 vid = priv->data.default_vlan;
 641
 642         if (ndev->flags & IFF_PROMISC) {
 643                 /* Enable promiscuous mode */
 644                 cpsw_set_promiscious(ndev, true);
 645                 cpsw_ale_set_allmulti(priv->ale, IFF_ALLMULTI);
 646                 return;
 647         } else {
 648                 /* Disable promiscuous mode */
 649                 cpsw_set_promiscious(ndev, false);
 650         }
 651
 652         /* Restore allmulti on vlans if necessary */
 653         cpsw_ale_set_allmulti(priv->ale, priv->ndev->flags & IFF_ALLMULTI);
 654
 655         /* Clear all mcast from ALE */
 656         cpsw_ale_flush_multicast(priv->ale, ALE_ALL_PORTS << priv->host_port,
 657                                  vid);
 658
 659         if (!netdev_mc_empty(ndev)) {
 660                 struct netdev_hw_addr *ha;
 661
 662                 /* program multicast address list into ALE register */
 663                 netdev_for_each_mc_addr(ha, ndev) {
 664                         cpsw_add_mcast(priv, (u8 *)ha->addr);
 665                 }
 666         }
 667 }
 668
 669 static void cpsw_intr_enable(struct cpsw_priv *priv)
 670 {
 671         __raw_writel(0xFF, &priv->wr_regs->tx_en);
 672         __raw_writel(0xFF, &priv->wr_regs->rx_en);
 673
 674         cpdma_ctlr_int_ctrl(priv->dma, true);
 675         return;
 676 }
 677
 678 static void cpsw_intr_disable(struct cpsw_priv *priv)
 679 {
 680         __raw_writel(0, &priv->wr_regs->tx_en);
 681         __raw_writel(0, &priv->wr_regs->rx_en);
 682
 683         cpdma_ctlr_int_ctrl(priv->dma, false);
 684         return;
 685 }
 686
 687 static void cpsw_tx_handler(void *token, int len, int status)
 688 {
 689         struct sk_buff          *skb = token;
 690         struct net_device       *ndev = skb->dev;
 691         struct cpsw_priv        *priv = netdev_priv(ndev);
 692
 693         /* Check whether the queue is stopped due to stalled tx dma, if the
 694          * queue is stopped then start the queue as we have free desc for tx
 695          */
 696         if (unlikely(netif_queue_stopped(ndev)))
 697                 netif_wake_queue(ndev);
 698         cpts_tx_timestamp(priv->cpts, skb);
 699         ndev->stats.tx_packets++;
 700         ndev->stats.tx_bytes += len;
 701         dev_kfree_skb_any(skb);
 702 }
 703
 704 static void cpsw_rx_handler(void *token, int len, int status)
 705 {
 706         struct sk_buff          *skb = token;
 707         struct sk_buff          *new_skb;
 708         struct net_device       *ndev = skb->dev;
 709         struct cpsw_priv        *priv = netdev_priv(ndev);
 710         int                     ret = 0;
 711
 712         cpsw_dual_emac_src_port_detect(status, priv, ndev, skb);
 713
 714         if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
 715                 bool ndev_status = false;
 716                 struct cpsw_slave *slave = priv->slaves;
 717                 int n;
 718
 719                 if (priv->data.dual_emac) {
 720                         /* In dual emac mode check for all interfaces */
 721                         for (n = priv->data.slaves; n; n--, slave++)
 722                                 if (netif_running(slave->ndev))
 723                                         ndev_status = true;
 724                 }
 725
 726                 if (ndev_status && (status >= 0)) {
 727                         /* The packet received is for the interface which
 728                          * is already down and the other interface is up
 729                          * and running, intead of freeing which results
 730                          * in reducing of the number of rx descriptor in
 731                          * DMA engine, requeue skb back to cpdma.
 732                          */
 733                         new_skb = skb;
 734                         goto requeue;
 735                 }
 736
 737                 /* the interface is going down, skbs are purged */
 738                 dev_kfree_skb_any(skb);
 739                 return;
 740         }
 741
 742         new_skb = netdev_alloc_skb_ip_align(ndev, priv->rx_packet_max);
 743         if (new_skb) {
 744                 skb_put(skb, len);
 745                 cpts_rx_timestamp(priv->cpts, skb);
 746                 skb->protocol = eth_type_trans(skb, ndev);
 747                 netif_receive_skb(skb);
 748                 ndev->stats.rx_bytes += len;
 749                 ndev->stats.rx_packets++;
 750         } else {
 751                 ndev->stats.rx_dropped++;
 752                 new_skb = skb;
 753         }
 754
 755 requeue:
 756         ret = cpdma_chan_submit(priv->rxch, new_skb, new_skb->data,
 757                         skb_tailroom(new_skb), 0);
 758         if (WARN_ON(ret < 0))
 759                 dev_kfree_skb_any(new_skb);
 760 }
 761
 762 static irqreturn_t cpsw_tx_interrupt(int irq, void *dev_id)
 763 {
 764         struct cpsw_priv *priv = dev_id;
 765
 766         cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
 767         cpdma_chan_process(priv->txch, 128);
 768
 769         priv = cpsw_get_slave_priv(priv, 1);
 770         if (priv)
 771                 cpdma_chan_process(priv->txch, 128);
 772
 773         return IRQ_HANDLED;
 774 }
 775
 776 static irqreturn_t cpsw_rx_interrupt(int irq, void *dev_id)
 777 {
 778         struct cpsw_priv *priv = dev_id;
 779
 780         cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
 781
 782         cpsw_intr_disable(priv);
 783         if (priv->irq_enabled == true) {
 784                 cpsw_disable_irq(priv);
 785                 priv->irq_enabled = false;
 786         }
 787
 788         if (netif_running(priv->ndev)) {
 789                 napi_schedule(&priv->napi);
 790                 return IRQ_HANDLED;
 791         }
 792
 793         priv = cpsw_get_slave_priv(priv, 1);
 794         if (!priv)
 795                 return IRQ_NONE;
 796
 797         if (netif_running(priv->ndev)) {
 798                 napi_schedule(&priv->napi);
 799                 return IRQ_HANDLED;
 800         }
 801         return IRQ_NONE;
 802 }
 803
 804 static int cpsw_poll(struct napi_struct *napi, int budget)
 805 {
 806         struct cpsw_priv        *priv = napi_to_priv(napi);
 807         int                     num_tx, num_rx;
 808
 809         num_tx = cpdma_chan_process(priv->txch, 128);
 810
 811         num_rx = cpdma_chan_process(priv->rxch, budget);
 812         if (num_rx < budget) {
 813                 struct cpsw_priv *prim_cpsw;
 814
 815                 napi_complete(napi);
 816                 cpsw_intr_enable(priv);
 817                 prim_cpsw = cpsw_get_slave_priv(priv, 0);
 818                 if (prim_cpsw->irq_enabled == false) {
 819                         prim_cpsw->irq_enabled = true;
 820                         cpsw_enable_irq(priv);
 821                 }
 822         }
 823
 824         if (num_rx || num_tx)
 825                 cpsw_dbg(priv, intr, "poll %d rx, %d tx pkts\n",
 826                          num_rx, num_tx);
 827
 828         return num_rx;
 829 }
 830
 831 static inline void soft_reset(const char *module, void __iomem *reg)
 832 {
 833         unsigned long timeout = jiffies + HZ;
 834
 835         __raw_writel(1, reg);
 836         do {
 837                 cpu_relax();
 838         } while ((__raw_readl(reg) & 1) && time_after(timeout, jiffies));
 839
 840         WARN(__raw_readl(reg) & 1, "failed to soft-reset %s\n", module);
 841 }
 842
 843 #define mac_hi(mac)     (((mac)[0] << 0) | ((mac)[1] << 8) |    \
 844                          ((mac)[2] << 16) | ((mac)[3] << 24))
 845 #define mac_lo(mac)     (((mac)[4] << 0) | ((mac)[5] << 8))
 846
 847 static void cpsw_set_slave_mac(struct cpsw_slave *slave,
 848                                struct cpsw_priv *priv)
 849 {
 850         slave_write(slave, mac_hi(priv->mac_addr), SA_HI);
 851         slave_write(slave, mac_lo(priv->mac_addr), SA_LO);
 852 }
 853
 854 static void _cpsw_adjust_link(struct cpsw_slave *slave,
 855                               struct cpsw_priv *priv, bool *link)
 856 {
 857         struct phy_device       *phy = slave->phy;
 858         u32                     mac_control = 0;
 859         u32                     slave_port;
 860
 861         if (!phy)
 862                 return;
 863
 864         slave_port = cpsw_get_slave_port(priv, slave->slave_num);
 865
 866         if (phy->link) {
 867                 mac_control = priv->data.mac_control;
 868
 869                 /* enable forwarding */
 870                 cpsw_ale_control_set(priv->ale, slave_port,
 871                                      ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 872
 873                 if (phy->speed == 1000)
 874                         mac_control |= BIT(7);  /* GIGABITEN    */
 875                 if (phy->duplex)
 876                         mac_control |= BIT(0);  /* FULLDUPLEXEN */
 877
 878                 /* set speed_in input in case RMII mode is used in 100Mbps */
 879                 if (phy->speed == 100)
 880                         mac_control |= BIT(15);
 881                 else if (phy->speed == 10)
 882                         mac_control |= BIT(18); /* In Band mode */
 883
 884                 if (priv->rx_pause)
 885                         mac_control |= BIT(3);
 886
 887                 if (priv->tx_pause)
 888                         mac_control |= BIT(4);
 889
 890                 *link = true;
 891         } else {
 892                 mac_control = 0;
 893                 /* disable forwarding */
 894                 cpsw_ale_control_set(priv->ale, slave_port,
 895                                      ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
 896         }
 897
 898         if (mac_control != slave->mac_control) {
 899                 phy_print_status(phy);
 900                 __raw_writel(mac_control, &slave->sliver->mac_control);
 901         }
 902
 903         slave->mac_control = mac_control;
 904 }
 905
 906 static void cpsw_adjust_link(struct net_device *ndev)
 907 {
 908         struct cpsw_priv        *priv = netdev_priv(ndev);
 909         bool                    link = false;
 910
 911         for_each_slave(priv, _cpsw_adjust_link, priv, &link);
 912
 913         if (link) {
 914                 netif_carrier_on(ndev);
 915                 if (netif_running(ndev))
 916                         netif_wake_queue(ndev);
 917         } else {
 918                 netif_carrier_off(ndev);
 919                 netif_stop_queue(ndev);
 920         }
 921 }
 922
 923 static int cpsw_get_coalesce(struct net_device *ndev,
 924                                 struct ethtool_coalesce *coal)
 925 {
 926         struct cpsw_priv *priv = netdev_priv(ndev);
 927
 928         coal->rx_coalesce_usecs = priv->coal_intvl;
 929         return 0;
 930 }
 931
 932 static int cpsw_set_coalesce(struct net_device *ndev,
 933                                 struct ethtool_coalesce *coal)
 934 {
 935         struct cpsw_priv *priv = netdev_priv(ndev);
 936         u32 int_ctrl;
 937         u32 num_interrupts = 0;
 938         u32 prescale = 0;
 939         u32 addnl_dvdr = 1;
 940         u32 coal_intvl = 0;
 941
 942         coal_intvl = coal->rx_coalesce_usecs;
 943
 944         int_ctrl =  readl(&priv->wr_regs->int_control);
 945         prescale = priv->bus_freq_mhz * 4;
 946
 947         if (!coal->rx_coalesce_usecs) {
 948                 int_ctrl &= ~(CPSW_INTPRESCALE_MASK | CPSW_INTPACEEN);
 949                 goto update_return;
 950         }
 951
 952         if (coal_intvl < CPSW_CMINTMIN_INTVL)
 953                 coal_intvl = CPSW_CMINTMIN_INTVL;
 954
 955         if (coal_intvl > CPSW_CMINTMAX_INTVL) {
 956                 /* Interrupt pacer works with 4us Pulse, we can
 957                  * throttle further by dilating the 4us pulse.
 958                  */
 959                 addnl_dvdr = CPSW_INTPRESCALE_MASK / prescale;
 960
 961                 if (addnl_dvdr > 1) {
 962                         prescale *= addnl_dvdr;
 963                         if (coal_intvl > (CPSW_CMINTMAX_INTVL * addnl_dvdr))
 964                                 coal_intvl = (CPSW_CMINTMAX_INTVL
 965                                                 * addnl_dvdr);
 966                 } else {
 967                         addnl_dvdr = 1;
 968                         coal_intvl = CPSW_CMINTMAX_INTVL;
 969                 }
 970         }
 971
 972         num_interrupts = (1000 * addnl_dvdr) / coal_intvl;
 973         writel(num_interrupts, &priv->wr_regs->rx_imax);
 974         writel(num_interrupts, &priv->wr_regs->tx_imax);
 975
 976         int_ctrl |= CPSW_INTPACEEN;
 977         int_ctrl &= (~CPSW_INTPRESCALE_MASK);
 978         int_ctrl |= (prescale & CPSW_INTPRESCALE_MASK);
 979
 980 update_return:
 981         writel(int_ctrl, &priv->wr_regs->int_control);
 982
 983         cpsw_notice(priv, timer, "Set coalesce to %d usecs.\n", coal_intvl);
 984         if (priv->data.dual_emac) {
 985                 int i;
 986
 987                 for (i = 0; i < priv->data.slaves; i++) {
 988                         priv = netdev_priv(priv->slaves[i].ndev);
 989                         priv->coal_intvl = coal_intvl;
 990                 }
 991         } else {
 992                 priv->coal_intvl = coal_intvl;
 993         }
 994
 995         return 0;
 996 }
 997
 998 static int cpsw_get_sset_count(struct net_device *ndev, int sset)
 999 {
1000         switch (sset) {
1001         case ETH_SS_STATS:
1002                 return CPSW_STATS_LEN;
1003         default:
1004                 return -EOPNOTSUPP;
1005         }
1006 }
1007
1008 static void cpsw_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
1009 {
1010         u8 *p = data;
1011         int i;
1012
1013         switch (stringset) {
1014         case ETH_SS_STATS:
1015                 for (i = 0; i < CPSW_STATS_LEN; i++) {
1016                         memcpy(p, cpsw_gstrings_stats[i].stat_string,
1017                                ETH_GSTRING_LEN);
1018                         p += ETH_GSTRING_LEN;
1019                 }
1020                 break;
1021         }
1022 }
1023
1024 static void cpsw_get_ethtool_stats(struct net_device *ndev,
1025                                     struct ethtool_stats *stats, u64 *data)
1026 {
1027         struct cpsw_priv *priv = netdev_priv(ndev);
1028         struct cpdma_chan_stats rx_stats;
1029         struct cpdma_chan_stats tx_stats;
1030         u32 val;
1031         u8 *p;
1032         int i;
1033
1034         /* Collect Davinci CPDMA stats for Rx and Tx Channel */
1035         cpdma_chan_get_stats(priv->rxch, &rx_stats);
1036         cpdma_chan_get_stats(priv->txch, &tx_stats);
1037
1038         for (i = 0; i < CPSW_STATS_LEN; i++) {
1039                 switch (cpsw_gstrings_stats[i].type) {
1040                 case CPSW_STATS:
1041                         val = readl(priv->hw_stats +
1042                                     cpsw_gstrings_stats[i].stat_offset);
1043                         data[i] = val;
1044                         break;
1045
1046                 case CPDMA_RX_STATS:
1047                         p = (u8 *)&rx_stats +
1048                                 cpsw_gstrings_stats[i].stat_offset;
1049                         data[i] = *(u32 *)p;
1050                         break;
1051
1052                 case CPDMA_TX_STATS:
1053                         p = (u8 *)&tx_stats +
1054                                 cpsw_gstrings_stats[i].stat_offset;
1055                         data[i] = *(u32 *)p;
1056                         break;
1057                 }
1058         }
1059 }
1060
1061 static int cpsw_common_res_usage_state(struct cpsw_priv *priv)
1062 {
1063         u32 i;
1064         u32 usage_count = 0;
1065
1066         if (!priv->data.dual_emac)
1067                 return 0;
1068
1069         for (i = 0; i < priv->data.slaves; i++)
1070                 if (priv->slaves[i].open_stat)
1071                         usage_count++;
1072
1073         return usage_count;
1074 }
1075
1076 static inline int cpsw_tx_packet_submit(struct net_device *ndev,
1077                         struct cpsw_priv *priv, struct sk_buff *skb)
1078 {
1079         if (!priv->data.dual_emac)
1080                 return cpdma_chan_submit(priv->txch, skb, skb->data,
1081                                   skb->len, 0);
1082
1083         if (ndev == cpsw_get_slave_ndev(priv, 0))
1084                 return cpdma_chan_submit(priv->txch, skb, skb->data,
1085                                   skb->len, 1);
1086         else
1087                 return cpdma_chan_submit(priv->txch, skb, skb->data,
1088                                   skb->len, 2);
1089 }
1090
1091 static inline void cpsw_add_dual_emac_def_ale_entries(
1092                 struct cpsw_priv *priv, struct cpsw_slave *slave,
1093                 u32 slave_port)
1094 {
1095         u32 port_mask = 1 << slave_port | 1 << priv->host_port;
1096
1097         if (priv->version == CPSW_VERSION_1)
1098                 slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
1099         else
1100                 slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
1101         cpsw_ale_add_vlan(priv->ale, slave->port_vlan, port_mask,
1102                           port_mask, port_mask, 0);
1103         cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1104                            port_mask, ALE_VLAN, slave->port_vlan, 0);
1105         cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1106                 priv->host_port, ALE_VLAN | ALE_SECURE, slave->port_vlan);
1107 }
1108
1109 static void soft_reset_slave(struct cpsw_slave *slave)
1110 {
1111         char name[32];
1112
1113         snprintf(name, sizeof(name), "slave-%d", slave->slave_num);
1114         soft_reset(name, &slave->sliver->soft_reset);
1115 }
1116
1117 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
1118 {
1119         u32 slave_port;
1120
1121         soft_reset_slave(slave);
1122
1123         /* setup priority mapping */
1124         __raw_writel(RX_PRIORITY_MAPPING, &slave->sliver->rx_pri_map);
1125
1126         switch (priv->version) {
1127         case CPSW_VERSION_1:
1128                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
1129                 break;
1130         case CPSW_VERSION_2:
1131         case CPSW_VERSION_3:
1132         case CPSW_VERSION_4:
1133                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
1134                 break;
1135         }
1136
1137         /* setup max packet size, and mac address */
1138         __raw_writel(priv->rx_packet_max, &slave->sliver->rx_maxlen);
1139         cpsw_set_slave_mac(slave, priv);
1140
1141         slave->mac_control = 0; /* no link yet */
1142
1143         slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1144
1145         if (priv->data.dual_emac)
1146                 cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
1147         else
1148                 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1149                                    1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
1150
1151         slave->phy = phy_connect(priv->ndev, slave->data->phy_id,
1152                                  &cpsw_adjust_link, slave->data->phy_if);
1153         if (IS_ERR(slave->phy)) {
1154                 dev_err(priv->dev, "phy %s not found on slave %d\n",
1155                         slave->data->phy_id, slave->slave_num);
1156                 slave->phy = NULL;
1157         } else {
1158                 dev_info(priv->dev, "phy found : id is : 0x%x\n",
1159                          slave->phy->phy_id);
1160                 phy_start(slave->phy);
1161
1162                 /* Configure GMII_SEL register */
1163                 cpsw_phy_sel(&priv->pdev->dev, slave->phy->interface,
1164                              slave->slave_num);
1165         }
1166 }
1167
1168 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
1169 {
1170         const int vlan = priv->data.default_vlan;
1171         const int port = priv->host_port;
1172         u32 reg;
1173         int i;
1174         int unreg_mcast_mask;
1175
1176         reg = (priv->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
1177                CPSW2_PORT_VLAN;
1178
1179         writel(vlan, &priv->host_port_regs->port_vlan);
1180
1181         for (i = 0; i < priv->data.slaves; i++)
1182                 slave_write(priv->slaves + i, vlan, reg);
1183
1184         if (priv->ndev->flags & IFF_ALLMULTI)
1185                 unreg_mcast_mask = ALE_ALL_PORTS;
1186         else
1187                 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1188
1189         cpsw_ale_add_vlan(priv->ale, vlan, ALE_ALL_PORTS << port,
1190                           ALE_ALL_PORTS << port, ALE_ALL_PORTS << port,
1191                           unreg_mcast_mask << port);
1192 }
1193
1194 static void cpsw_init_host_port(struct cpsw_priv *priv)
1195 {
1196         u32 control_reg;
1197         u32 fifo_mode;
1198
1199         /* soft reset the controller and initialize ale */
1200         soft_reset("cpsw", &priv->regs->soft_reset);
1201         cpsw_ale_start(priv->ale);
1202
1203         /* switch to vlan unaware mode */
1204         cpsw_ale_control_set(priv->ale, priv->host_port, ALE_VLAN_AWARE,
1205                              CPSW_ALE_VLAN_AWARE);
1206         control_reg = readl(&priv->regs->control);
1207         control_reg |= CPSW_VLAN_AWARE;
1208         writel(control_reg, &priv->regs->control);
1209         fifo_mode = (priv->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
1210                      CPSW_FIFO_NORMAL_MODE;
1211         writel(fifo_mode, &priv->host_port_regs->tx_in_ctl);
1212
1213         /* setup host port priority mapping */
1214         __raw_writel(CPDMA_TX_PRIORITY_MAP,
1215                      &priv->host_port_regs->cpdma_tx_pri_map);
1216         __raw_writel(0, &priv->host_port_regs->cpdma_rx_chan_map);
1217
1218         cpsw_ale_control_set(priv->ale, priv->host_port,
1219                              ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
1220
1221         if (!priv->data.dual_emac) {
1222                 cpsw_ale_add_ucast(priv->ale, priv->mac_addr, priv->host_port,
1223                                    0, 0);
1224                 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1225                                    1 << priv->host_port, 0, 0, ALE_MCAST_FWD_2);
1226         }
1227 }
1228
1229 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_priv *priv)
1230 {
1231         u32 slave_port;
1232
1233         slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1234
1235         if (!slave->phy)
1236                 return;
1237         phy_stop(slave->phy);
1238         phy_disconnect(slave->phy);
1239         slave->phy = NULL;
1240         cpsw_ale_control_set(priv->ale, slave_port,
1241                              ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
1242 }
1243
1244 static int cpsw_ndo_open(struct net_device *ndev)
1245 {
1246         struct cpsw_priv *priv = netdev_priv(ndev);
1247         struct cpsw_priv *prim_cpsw;
1248         int i, ret;
1249         u32 reg;
1250
1251         if (!cpsw_common_res_usage_state(priv))
1252                 cpsw_intr_disable(priv);
1253         netif_carrier_off(ndev);
1254
1255         pm_runtime_get_sync(&priv->pdev->dev);
1256
1257         reg = priv->version;
1258
1259         dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
1260                  CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
1261                  CPSW_RTL_VERSION(reg));
1262
1263         /* initialize host and slave ports */
1264         if (!cpsw_common_res_usage_state(priv))
1265                 cpsw_init_host_port(priv);
1266         for_each_slave(priv, cpsw_slave_open, priv);
1267
1268         /* Add default VLAN */
1269         if (!priv->data.dual_emac)
1270                 cpsw_add_default_vlan(priv);
1271         else
1272                 cpsw_ale_add_vlan(priv->ale, priv->data.default_vlan,
1273                                   ALE_ALL_PORTS << priv->host_port,
1274                                   ALE_ALL_PORTS << priv->host_port, 0, 0);
1275
1276         if (!cpsw_common_res_usage_state(priv)) {
1277                 /* setup tx dma to fixed prio and zero offset */
1278                 cpdma_control_set(priv->dma, CPDMA_TX_PRIO_FIXED, 1);
1279                 cpdma_control_set(priv->dma, CPDMA_RX_BUFFER_OFFSET, 0);
1280
1281                 /* disable priority elevation */
1282                 __raw_writel(0, &priv->regs->ptype);
1283
1284                 /* enable statistics collection only on all ports */
1285                 __raw_writel(0x7, &priv->regs->stat_port_en);
1286
1287                 /* Enable internal fifo flow control */
1288                 writel(0x7, &priv->regs->flow_control);
1289
1290                 if (WARN_ON(!priv->data.rx_descs))
1291                         priv->data.rx_descs = 128;
1292
1293                 for (i = 0; i < priv->data.rx_descs; i++) {
1294                         struct sk_buff *skb;
1295
1296                         ret = -ENOMEM;
1297                         skb = __netdev_alloc_skb_ip_align(priv->ndev,
1298                                         priv->rx_packet_max, GFP_KERNEL);
1299                         if (!skb)
1300                                 goto err_cleanup;
1301                         ret = cpdma_chan_submit(priv->rxch, skb, skb->data,
1302                                         skb_tailroom(skb), 0);
1303                         if (ret < 0) {
1304                                 kfree_skb(skb);
1305                                 goto err_cleanup;
1306                         }
1307                 }
1308                 /* continue even if we didn't manage to submit all
1309                  * receive descs
1310                  */
1311                 cpsw_info(priv, ifup, "submitted %d rx descriptors\n", i);
1312
1313                 if (cpts_register(&priv->pdev->dev, priv->cpts,
1314                                   priv->data.cpts_clock_mult,
1315                                   priv->data.cpts_clock_shift))
1316                         dev_err(priv->dev, "error registering cpts device\n");
1317
1318         }
1319
1320         /* Enable Interrupt pacing if configured */
1321         if (priv->coal_intvl != 0) {
1322                 struct ethtool_coalesce coal;
1323
1324                 coal.rx_coalesce_usecs = (priv->coal_intvl << 4);
1325                 cpsw_set_coalesce(ndev, &coal);
1326         }
1327
1328         napi_enable(&priv->napi);
1329         cpdma_ctlr_start(priv->dma);
1330         cpsw_intr_enable(priv);
1331
1332         prim_cpsw = cpsw_get_slave_priv(priv, 0);
1333         if (prim_cpsw->irq_enabled == false) {
1334                 if ((priv == prim_cpsw) || !netif_running(prim_cpsw->ndev)) {
1335                         prim_cpsw->irq_enabled = true;
1336                         cpsw_enable_irq(prim_cpsw);
1337                 }
1338         }
1339
1340         if (priv->data.dual_emac)
1341                 priv->slaves[priv->emac_port].open_stat = true;
1342         return 0;
1343
1344 err_cleanup:
1345         cpdma_ctlr_stop(priv->dma);
1346         for_each_slave(priv, cpsw_slave_stop, priv);
1347         pm_runtime_put_sync(&priv->pdev->dev);
1348         netif_carrier_off(priv->ndev);
1349         return ret;
1350 }
1351
1352 static int cpsw_ndo_stop(struct net_device *ndev)
1353 {
1354         struct cpsw_priv *priv = netdev_priv(ndev);
1355
1356         cpsw_info(priv, ifdown, "shutting down cpsw device\n");
1357         netif_stop_queue(priv->ndev);
1358         napi_disable(&priv->napi);
1359         netif_carrier_off(priv->ndev);
1360
1361         if (cpsw_common_res_usage_state(priv) <= 1) {
1362                 cpts_unregister(priv->cpts);
1363                 cpsw_intr_disable(priv);
1364                 cpdma_ctlr_int_ctrl(priv->dma, false);
1365                 cpdma_ctlr_stop(priv->dma);
1366                 cpsw_ale_stop(priv->ale);
1367         }
1368         for_each_slave(priv, cpsw_slave_stop, priv);
1369         pm_runtime_put_sync(&priv->pdev->dev);
1370         if (priv->data.dual_emac)
1371                 priv->slaves[priv->emac_port].open_stat = false;
1372         return 0;
1373 }
1374
1375 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
1376                                        struct net_device *ndev)
1377 {
1378         struct cpsw_priv *priv = netdev_priv(ndev);
1379         int ret;
1380
1381         ndev->trans_start = jiffies;
1382
1383         if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
1384                 cpsw_err(priv, tx_err, "packet pad failed\n");
1385                 ndev->stats.tx_dropped++;
1386                 return NETDEV_TX_OK;
1387         }
1388
1389         if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
1390                                 priv->cpts->tx_enable)
1391                 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
1392
1393         skb_tx_timestamp(skb);
1394
1395         ret = cpsw_tx_packet_submit(ndev, priv, skb);
1396         if (unlikely(ret != 0)) {
1397                 cpsw_err(priv, tx_err, "desc submit failed\n");
1398                 goto fail;
1399         }
1400
1401         /* If there is no more tx desc left free then we need to
1402          * tell the kernel to stop sending us tx frames.
1403          */
1404         if (unlikely(!cpdma_check_free_tx_desc(priv->txch)))
1405                 netif_stop_queue(ndev);
1406
1407         return NETDEV_TX_OK;
1408 fail:
1409         ndev->stats.tx_dropped++;
1410         netif_stop_queue(ndev);
1411         return NETDEV_TX_BUSY;
1412 }
1413
1414 #ifdef CONFIG_TI_CPTS
1415
1416 static void cpsw_hwtstamp_v1(struct cpsw_priv *priv)
1417 {
1418         struct cpsw_slave *slave = &priv->slaves[priv->data.active_slave];
1419         u32 ts_en, seq_id;
1420
1421         if (!priv->cpts->tx_enable && !priv->cpts->rx_enable) {
1422                 slave_write(slave, 0, CPSW1_TS_CTL);
1423                 return;
1424         }
1425
1426         seq_id = (30 << CPSW_V1_SEQ_ID_OFS_SHIFT) | ETH_P_1588;
1427         ts_en = EVENT_MSG_BITS << CPSW_V1_MSG_TYPE_OFS;
1428
1429         if (priv->cpts->tx_enable)
1430                 ts_en |= CPSW_V1_TS_TX_EN;
1431
1432         if (priv->cpts->rx_enable)
1433                 ts_en |= CPSW_V1_TS_RX_EN;
1434
1435         slave_write(slave, ts_en, CPSW1_TS_CTL);
1436         slave_write(slave, seq_id, CPSW1_TS_SEQ_LTYPE);
1437 }
1438
1439 static void cpsw_hwtstamp_v2(struct cpsw_priv *priv)
1440 {
1441         struct cpsw_slave *slave;
1442         u32 ctrl, mtype;
1443
1444         if (priv->data.dual_emac)
1445                 slave = &priv->slaves[priv->emac_port];
1446         else
1447                 slave = &priv->slaves[priv->data.active_slave];
1448
1449         ctrl = slave_read(slave, CPSW2_CONTROL);
1450         switch (priv->version) {
1451         case CPSW_VERSION_2:
1452                 ctrl &= ~CTRL_V2_ALL_TS_MASK;
1453
1454                 if (priv->cpts->tx_enable)
1455                         ctrl |= CTRL_V2_TX_TS_BITS;
1456
1457                 if (priv->cpts->rx_enable)
1458                         ctrl |= CTRL_V2_RX_TS_BITS;
1459         break;
1460         case CPSW_VERSION_3:
1461         default:
1462                 ctrl &= ~CTRL_V3_ALL_TS_MASK;
1463
1464                 if (priv->cpts->tx_enable)
1465                         ctrl |= CTRL_V3_TX_TS_BITS;
1466
1467                 if (priv->cpts->rx_enable)
1468                         ctrl |= CTRL_V3_RX_TS_BITS;
1469         break;
1470         }
1471
1472         mtype = (30 << TS_SEQ_ID_OFFSET_SHIFT) | EVENT_MSG_BITS;
1473
1474         slave_write(slave, mtype, CPSW2_TS_SEQ_MTYPE);
1475         slave_write(slave, ctrl, CPSW2_CONTROL);
1476         __raw_writel(ETH_P_1588, &priv->regs->ts_ltype);
1477 }
1478
1479 static int cpsw_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
1480 {
1481         struct cpsw_priv *priv = netdev_priv(dev);
1482         struct cpts *cpts = priv->cpts;
1483         struct hwtstamp_config cfg;
1484
1485         if (priv->version != CPSW_VERSION_1 &&
1486             priv->version != CPSW_VERSION_2 &&
1487             priv->version != CPSW_VERSION_3)
1488                 return -EOPNOTSUPP;
1489
1490         if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
1491                 return -EFAULT;
1492
1493         /* reserved for future extensions */
1494         if (cfg.flags)
1495                 return -EINVAL;
1496
1497         if (cfg.tx_type != HWTSTAMP_TX_OFF && cfg.tx_type != HWTSTAMP_TX_ON)
1498                 return -ERANGE;
1499
1500         switch (cfg.rx_filter) {
1501         case HWTSTAMP_FILTER_NONE:
1502                 cpts->rx_enable = 0;
1503                 break;
1504         case HWTSTAMP_FILTER_ALL:
1505         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
1506         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
1507         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
1508                 return -ERANGE;
1509         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
1510         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
1511         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
1512         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
1513         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
1514         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
1515         case HWTSTAMP_FILTER_PTP_V2_EVENT:
1516         case HWTSTAMP_FILTER_PTP_V2_SYNC:
1517         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
1518                 cpts->rx_enable = 1;
1519                 cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
1520                 break;
1521         default:
1522                 return -ERANGE;
1523         }
1524
1525         cpts->tx_enable = cfg.tx_type == HWTSTAMP_TX_ON;
1526
1527         switch (priv->version) {
1528         case CPSW_VERSION_1:
1529                 cpsw_hwtstamp_v1(priv);
1530                 break;
1531         case CPSW_VERSION_2:
1532         case CPSW_VERSION_3:
1533                 cpsw_hwtstamp_v2(priv);
1534                 break;
1535         default:
1536                 WARN_ON(1);
1537         }
1538
1539         return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1540 }
1541
1542 static int cpsw_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
1543 {
1544         struct cpsw_priv *priv = netdev_priv(dev);
1545         struct cpts *cpts = priv->cpts;
1546         struct hwtstamp_config cfg;
1547
1548         if (priv->version != CPSW_VERSION_1 &&
1549             priv->version != CPSW_VERSION_2 &&
1550             priv->version != CPSW_VERSION_3)
1551                 return -EOPNOTSUPP;
1552
1553         cfg.flags = 0;
1554         cfg.tx_type = cpts->tx_enable ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF;
1555         cfg.rx_filter = (cpts->rx_enable ?
1556                          HWTSTAMP_FILTER_PTP_V2_EVENT : HWTSTAMP_FILTER_NONE);
1557
1558         return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1559 }
1560
1561 #endif /*CONFIG_TI_CPTS*/
1562
1563 static int cpsw_ndo_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
1564 {
1565         struct cpsw_priv *priv = netdev_priv(dev);
1566         int slave_no = cpsw_slave_index(priv);
1567
1568         if (!netif_running(dev))
1569                 return -EINVAL;
1570
1571         switch (cmd) {
1572 #ifdef CONFIG_TI_CPTS
1573         case SIOCSHWTSTAMP:
1574                 return cpsw_hwtstamp_set(dev, req);
1575         case SIOCGHWTSTAMP:
1576                 return cpsw_hwtstamp_get(dev, req);
1577 #endif
1578         }
1579
1580         if (!priv->slaves[slave_no].phy)
1581                 return -EOPNOTSUPP;
1582         return phy_mii_ioctl(priv->slaves[slave_no].phy, req, cmd);
1583 }
1584
1585 static void cpsw_ndo_tx_timeout(struct net_device *ndev)
1586 {
1587         struct cpsw_priv *priv = netdev_priv(ndev);
1588
1589         cpsw_err(priv, tx_err, "transmit timeout, restarting dma\n");
1590         ndev->stats.tx_errors++;
1591         cpsw_intr_disable(priv);
1592         cpdma_ctlr_int_ctrl(priv->dma, false);
1593         cpdma_chan_stop(priv->txch);
1594         cpdma_chan_start(priv->txch);
1595         cpdma_ctlr_int_ctrl(priv->dma, true);
1596         cpsw_intr_enable(priv);
1597 }
1598
1599 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
1600 {
1601         struct cpsw_priv *priv = netdev_priv(ndev);
1602         struct sockaddr *addr = (struct sockaddr *)p;
1603         int flags = 0;
1604         u16 vid = 0;
1605
1606         if (!is_valid_ether_addr(addr->sa_data))
1607                 return -EADDRNOTAVAIL;
1608
1609         if (priv->data.dual_emac) {
1610                 vid = priv->slaves[priv->emac_port].port_vlan;
1611                 flags = ALE_VLAN;
1612         }
1613
1614         cpsw_ale_del_ucast(priv->ale, priv->mac_addr, priv->host_port,
1615                            flags, vid);
1616         cpsw_ale_add_ucast(priv->ale, addr->sa_data, priv->host_port,
1617                            flags, vid);
1618
1619         memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
1620         memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
1621         for_each_slave(priv, cpsw_set_slave_mac, priv);
1622
1623         return 0;
1624 }
1625
1626 #ifdef CONFIG_NET_POLL_CONTROLLER
1627 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1628 {
1629         struct cpsw_priv *priv = netdev_priv(ndev);
1630
1631         cpsw_intr_disable(priv);
1632         cpdma_ctlr_int_ctrl(priv->dma, false);
1633         cpsw_rx_interrupt(priv->irqs_table[0], priv);
1634         cpsw_tx_interrupt(priv->irqs_table[1], priv);
1635         cpdma_ctlr_int_ctrl(priv->dma, true);
1636         cpsw_intr_enable(priv);
1637 }
1638 #endif
1639
1640 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
1641                                 unsigned short vid)
1642 {
1643         int ret;
1644         int unreg_mcast_mask = 0;
1645         u32 port_mask;
1646
1647         if (priv->data.dual_emac) {
1648                 port_mask = (1 << (priv->emac_port + 1)) | ALE_PORT_HOST;
1649
1650                 if (priv->ndev->flags & IFF_ALLMULTI)
1651                         unreg_mcast_mask = port_mask;
1652         } else {
1653                 port_mask = ALE_ALL_PORTS;
1654
1655                 if (priv->ndev->flags & IFF_ALLMULTI)
1656                         unreg_mcast_mask = ALE_ALL_PORTS;
1657                 else
1658                         unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1659         }
1660
1661         ret = cpsw_ale_add_vlan(priv->ale, vid, port_mask, 0, port_mask,
1662                                 unreg_mcast_mask << priv->host_port);
1663         if (ret != 0)
1664                 return ret;
1665
1666         ret = cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1667                                  priv->host_port, ALE_VLAN, vid);
1668         if (ret != 0)
1669                 goto clean_vid;
1670
1671         ret = cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1672                                  port_mask, ALE_VLAN, vid, 0);
1673         if (ret != 0)
1674                 goto clean_vlan_ucast;
1675         return 0;
1676
1677 clean_vlan_ucast:
1678         cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1679                             priv->host_port, ALE_VLAN, vid);
1680 clean_vid:
1681         cpsw_ale_del_vlan(priv->ale, vid, 0);
1682         return ret;
1683 }
1684
1685 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1686                                     __be16 proto, u16 vid)
1687 {
1688         struct cpsw_priv *priv = netdev_priv(ndev);
1689
1690         if (vid == priv->data.default_vlan)
1691                 return 0;
1692
1693         if (priv->data.dual_emac) {
1694                 /* In dual EMAC, reserved VLAN id should not be used for
1695                  * creating VLAN interfaces as this can break the dual
1696                  * EMAC port separation
1697                  */
1698                 int i;
1699
1700                 for (i = 0; i < priv->data.slaves; i++) {
1701                         if (vid == priv->slaves[i].port_vlan)
1702                                 return -EINVAL;
1703                 }
1704         }
1705
1706         dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1707         return cpsw_add_vlan_ale_entry(priv, vid);
1708 }
1709
1710 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1711                                      __be16 proto, u16 vid)
1712 {
1713         struct cpsw_priv *priv = netdev_priv(ndev);
1714         int ret;
1715
1716         if (vid == priv->data.default_vlan)
1717                 return 0;
1718
1719         if (priv->data.dual_emac) {
1720                 int i;
1721
1722                 for (i = 0; i < priv->data.slaves; i++) {
1723                         if (vid == priv->slaves[i].port_vlan)
1724                                 return -EINVAL;
1725                 }
1726         }
1727
1728         dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1729         ret = cpsw_ale_del_vlan(priv->ale, vid, 0);
1730         if (ret != 0)
1731                 return ret;
1732
1733         ret = cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1734                                  priv->host_port, ALE_VLAN, vid);
1735         if (ret != 0)
1736                 return ret;
1737
1738         return cpsw_ale_del_mcast(priv->ale, priv->ndev->broadcast,
1739                                   0, ALE_VLAN, vid);
1740 }
1741
1742 static const struct net_device_ops cpsw_netdev_ops = {
1743         .ndo_open               = cpsw_ndo_open,
1744         .ndo_stop               = cpsw_ndo_stop,
1745         .ndo_start_xmit         = cpsw_ndo_start_xmit,
1746         .ndo_set_mac_address    = cpsw_ndo_set_mac_address,
1747         .ndo_do_ioctl           = cpsw_ndo_ioctl,
1748         .ndo_validate_addr      = eth_validate_addr,
1749         .ndo_change_mtu         = eth_change_mtu,
1750         .ndo_tx_timeout         = cpsw_ndo_tx_timeout,
1751         .ndo_set_rx_mode        = cpsw_ndo_set_rx_mode,
1752 #ifdef CONFIG_NET_POLL_CONTROLLER
1753         .ndo_poll_controller    = cpsw_ndo_poll_controller,
1754 #endif
1755         .ndo_vlan_rx_add_vid    = cpsw_ndo_vlan_rx_add_vid,
1756         .ndo_vlan_rx_kill_vid   = cpsw_ndo_vlan_rx_kill_vid,
1757 };
1758
1759 static int cpsw_get_regs_len(struct net_device *ndev)
1760 {
1761         struct cpsw_priv *priv = netdev_priv(ndev);
1762
1763         return priv->data.ale_entries * ALE_ENTRY_WORDS * sizeof(u32);
1764 }
1765
1766 static void cpsw_get_regs(struct net_device *ndev,
1767                           struct ethtool_regs *regs, void *p)
1768 {
1769         struct cpsw_priv *priv = netdev_priv(ndev);
1770         u32 *reg = p;
1771
1772         /* update CPSW IP version */
1773         regs->version = priv->version;
1774
1775         cpsw_ale_dump(priv->ale, reg);
1776 }
1777
1778 static void cpsw_get_drvinfo(struct net_device *ndev,
1779                              struct ethtool_drvinfo *info)
1780 {
1781         struct cpsw_priv *priv = netdev_priv(ndev);
1782
1783         strlcpy(info->driver, "cpsw", sizeof(info->driver));
1784         strlcpy(info->version, "1.0", sizeof(info->version));
1785         strlcpy(info->bus_info, priv->pdev->name, sizeof(info->bus_info));
1786         info->regdump_len = cpsw_get_regs_len(ndev);
1787 }
1788
1789 static u32 cpsw_get_msglevel(struct net_device *ndev)
1790 {
1791         struct cpsw_priv *priv = netdev_priv(ndev);
1792         return priv->msg_enable;
1793 }
1794
1795 static void cpsw_set_msglevel(struct net_device *ndev, u32 value)
1796 {
1797         struct cpsw_priv *priv = netdev_priv(ndev);
1798         priv->msg_enable = value;
1799 }
1800
1801 static int cpsw_get_ts_info(struct net_device *ndev,
1802                             struct ethtool_ts_info *info)
1803 {
1804 #ifdef CONFIG_TI_CPTS
1805         struct cpsw_priv *priv = netdev_priv(ndev);
1806
1807         info->so_timestamping =
1808                 SOF_TIMESTAMPING_TX_HARDWARE |
1809                 SOF_TIMESTAMPING_TX_SOFTWARE |
1810                 SOF_TIMESTAMPING_RX_HARDWARE |
1811                 SOF_TIMESTAMPING_RX_SOFTWARE |
1812                 SOF_TIMESTAMPING_SOFTWARE |
1813                 SOF_TIMESTAMPING_RAW_HARDWARE;
1814         info->phc_index = priv->cpts->phc_index;
1815         info->tx_types =
1816                 (1 << HWTSTAMP_TX_OFF) |
1817                 (1 << HWTSTAMP_TX_ON);
1818         info->rx_filters =
1819                 (1 << HWTSTAMP_FILTER_NONE) |
1820                 (1 << HWTSTAMP_FILTER_PTP_V2_EVENT);
1821 #else
1822         info->so_timestamping =
1823                 SOF_TIMESTAMPING_TX_SOFTWARE |
1824                 SOF_TIMESTAMPING_RX_SOFTWARE |
1825                 SOF_TIMESTAMPING_SOFTWARE;
1826         info->phc_index = -1;
1827         info->tx_types = 0;
1828         info->rx_filters = 0;
1829 #endif
1830         return 0;
1831 }
1832
1833 static int cpsw_get_settings(struct net_device *ndev,
1834                              struct ethtool_cmd *ecmd)
1835 {
1836         struct cpsw_priv *priv = netdev_priv(ndev);
1837         int slave_no = cpsw_slave_index(priv);
1838
1839         if (priv->slaves[slave_no].phy)
1840                 return phy_ethtool_gset(priv->slaves[slave_no].phy, ecmd);
1841         else
1842                 return -EOPNOTSUPP;
1843 }
1844
1845 static int cpsw_set_settings(struct net_device *ndev, struct ethtool_cmd *ecmd)
1846 {
1847         struct cpsw_priv *priv = netdev_priv(ndev);
1848         int slave_no = cpsw_slave_index(priv);
1849
1850         if (priv->slaves[slave_no].phy)
1851                 return phy_ethtool_sset(priv->slaves[slave_no].phy, ecmd);
1852         else
1853                 return -EOPNOTSUPP;
1854 }
1855
1856 static void cpsw_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1857 {
1858         struct cpsw_priv *priv = netdev_priv(ndev);
1859         int slave_no = cpsw_slave_index(priv);
1860
1861         wol->supported = 0;
1862         wol->wolopts = 0;
1863
1864         if (priv->slaves[slave_no].phy)
1865                 phy_ethtool_get_wol(priv->slaves[slave_no].phy, wol);
1866 }
1867
1868 static int cpsw_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1869 {
1870         struct cpsw_priv *priv = netdev_priv(ndev);
1871         int slave_no = cpsw_slave_index(priv);
1872
1873         if (priv->slaves[slave_no].phy)
1874                 return phy_ethtool_set_wol(priv->slaves[slave_no].phy, wol);
1875         else
1876                 return -EOPNOTSUPP;
1877 }
1878
1879 static void cpsw_get_pauseparam(struct net_device *ndev,
1880                                 struct ethtool_pauseparam *pause)
1881 {
1882         struct cpsw_priv *priv = netdev_priv(ndev);
1883
1884         pause->autoneg = AUTONEG_DISABLE;
1885         pause->rx_pause = priv->rx_pause ? true : false;
1886         pause->tx_pause = priv->tx_pause ? true : false;
1887 }
1888
1889 static int cpsw_set_pauseparam(struct net_device *ndev,
1890                                struct ethtool_pauseparam *pause)
1891 {
1892         struct cpsw_priv *priv = netdev_priv(ndev);
1893         bool link;
1894
1895         priv->rx_pause = pause->rx_pause ? true : false;
1896         priv->tx_pause = pause->tx_pause ? true : false;
1897
1898         for_each_slave(priv, _cpsw_adjust_link, priv, &link);
1899
1900         return 0;
1901 }
1902
1903 static const struct ethtool_ops cpsw_ethtool_ops = {
1904         .get_drvinfo    = cpsw_get_drvinfo,
1905         .get_msglevel   = cpsw_get_msglevel,
1906         .set_msglevel   = cpsw_set_msglevel,
1907         .get_link       = ethtool_op_get_link,
1908         .get_ts_info    = cpsw_get_ts_info,
1909         .get_settings   = cpsw_get_settings,
1910         .set_settings   = cpsw_set_settings,
1911         .get_coalesce   = cpsw_get_coalesce,
1912         .set_coalesce   = cpsw_set_coalesce,
1913         .get_sset_count         = cpsw_get_sset_count,
1914         .get_strings            = cpsw_get_strings,
1915         .get_ethtool_stats      = cpsw_get_ethtool_stats,
1916         .get_pauseparam         = cpsw_get_pauseparam,
1917         .set_pauseparam         = cpsw_set_pauseparam,
1918         .get_wol        = cpsw_get_wol,
1919         .set_wol        = cpsw_set_wol,
1920         .get_regs_len   = cpsw_get_regs_len,
1921         .get_regs       = cpsw_get_regs,
1922 };
1923
1924 static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv,
1925                             u32 slave_reg_ofs, u32 sliver_reg_ofs)
1926 {
1927         void __iomem            *regs = priv->regs;
1928         int                     slave_num = slave->slave_num;
1929         struct cpsw_slave_data  *data = priv->data.slave_data + slave_num;
1930
1931         slave->data     = data;
1932         slave->regs     = regs + slave_reg_ofs;
1933         slave->sliver   = regs + sliver_reg_ofs;
1934         slave->port_vlan = data->dual_emac_res_vlan;
1935 }
1936
1937 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1938                          struct platform_device *pdev)
1939 {
1940         struct device_node *node = pdev->dev.of_node;
1941         struct device_node *slave_node;
1942         int i = 0, ret;
1943         u32 prop;
1944
1945         if (!node)
1946                 return -EINVAL;
1947
1948         if (of_property_read_u32(node, "slaves", &prop)) {
1949                 dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1950                 return -EINVAL;
1951         }
1952         data->slaves = prop;
1953
1954         if (of_property_read_u32(node, "active_slave", &prop)) {
1955                 dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1956                 return -EINVAL;
1957         }
1958         data->active_slave = prop;
1959
1960         if (of_property_read_u32(node, "cpts_clock_mult", &prop)) {
1961                 dev_err(&pdev->dev, "Missing cpts_clock_mult property in the DT.\n");
1962                 return -EINVAL;
1963         }
1964         data->cpts_clock_mult = prop;
1965
1966         if (of_property_read_u32(node, "cpts_clock_shift", &prop)) {
1967                 dev_err(&pdev->dev, "Missing cpts_clock_shift property in the DT.\n");
1968                 return -EINVAL;
1969         }
1970         data->cpts_clock_shift = prop;
1971
1972         data->slave_data = devm_kzalloc(&pdev->dev, data->slaves
1973                                         * sizeof(struct cpsw_slave_data),
1974                                         GFP_KERNEL);
1975         if (!data->slave_data)
1976                 return -ENOMEM;
1977
1978         if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1979                 dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1980                 return -EINVAL;
1981         }
1982         data->channels = prop;
1983
1984         if (of_property_read_u32(node, "ale_entries", &prop)) {
1985                 dev_err(&pdev->dev, "Missing ale_entries property in the DT.\n");
1986                 return -EINVAL;
1987         }
1988         data->ale_entries = prop;
1989
1990         if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1991                 dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");
1992                 return -EINVAL;
1993         }
1994         data->bd_ram_size = prop;
1995
1996         if (of_property_read_u32(node, "rx_descs", &prop)) {
1997                 dev_err(&pdev->dev, "Missing rx_descs property in the DT.\n");
1998                 return -EINVAL;
1999         }
2000         data->rx_descs = prop;
2001
2002         if (of_property_read_u32(node, "mac_control", &prop)) {
2003                 dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
2004                 return -EINVAL;
2005         }
2006         data->mac_control = prop;
2007
2008         if (of_property_read_bool(node, "dual_emac"))
2009                 data->dual_emac = 1;
2010
2011         /*
2012          * Populate all the child nodes here...
2013          */
2014         ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
2015         /* We do not want to force this, as in some cases may not have child */
2016         if (ret)
2017                 dev_warn(&pdev->dev, "Doesn't have any child node\n");
2018
2019         for_each_child_of_node(node, slave_node) {
2020                 struct cpsw_slave_data *slave_data = data->slave_data + i;
2021                 const void *mac_addr = NULL;
2022                 u32 phyid;
2023                 int lenp;
2024                 const __be32 *parp;
2025                 struct device_node *mdio_node;
2026                 struct platform_device *mdio;
2027
2028                 /* This is no slave child node, continue */
2029                 if (strcmp(slave_node->name, "slave"))
2030                         continue;
2031
2032                 parp = of_get_property(slave_node, "phy_id", &lenp);
2033                 if ((parp == NULL) || (lenp != (sizeof(void *) * 2))) {
2034                         dev_err(&pdev->dev, "Missing slave[%d] phy_id property\n", i);
2035                         goto no_phy_slave;
2036                 }
2037                 mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
2038                 phyid = be32_to_cpup(parp+1);
2039                 mdio = of_find_device_by_node(mdio_node);
2040                 of_node_put(mdio_node);
2041                 if (!mdio) {
2042                         dev_err(&pdev->dev, "Missing mdio platform device\n");
2043                         return -EINVAL;
2044                 }
2045                 snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
2046                          PHY_ID_FMT, mdio->name, phyid);
2047
2048                 slave_data->phy_if = of_get_phy_mode(slave_node);
2049                 if (slave_data->phy_if < 0) {
2050                         dev_err(&pdev->dev, "Missing or malformed slave[%d] phy-mode property\n",
2051                                 i);
2052                         return slave_data->phy_if;
2053                 }
2054
2055 no_phy_slave:
2056                 mac_addr = of_get_mac_address(slave_node);
2057                 if (mac_addr) {
2058                         memcpy(slave_data->mac_addr, mac_addr, ETH_ALEN);
2059                 } else {
2060                         if (of_machine_is_compatible("ti,am33xx")) {
2061                                 ret = cpsw_am33xx_cm_get_macid(&pdev->dev,
2062                                                         0x630, i,
2063                                                         slave_data->mac_addr);
2064                                 if (ret)
2065                                         return ret;
2066                         }
2067                 }
2068                 if (data->dual_emac) {
2069                         if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
2070                                                  &prop)) {
2071                                 dev_err(&pdev->dev, "Missing dual_emac_res_vlan in DT.\n");
2072                                 slave_data->dual_emac_res_vlan = i+1;
2073                                 dev_err(&pdev->dev, "Using %d as Reserved VLAN for %d slave\n",
2074                                         slave_data->dual_emac_res_vlan, i);
2075                         } else {
2076                                 slave_data->dual_emac_res_vlan = prop;
2077                         }
2078                 }
2079
2080                 i++;
2081                 if (i == data->slaves)
2082                         break;
2083         }
2084
2085         return 0;
2086 }
2087
2088 static int cpsw_probe_dual_emac(struct platform_device *pdev,
2089                                 struct cpsw_priv *priv)
2090 {
2091         struct cpsw_platform_data       *data = &priv->data;
2092         struct net_device               *ndev;
2093         struct cpsw_priv                *priv_sl2;
2094         int ret = 0, i;
2095
2096         ndev = alloc_etherdev(sizeof(struct cpsw_priv));
2097         if (!ndev) {
2098                 dev_err(&pdev->dev, "cpsw: error allocating net_device\n");
2099                 return -ENOMEM;
2100         }
2101
2102         priv_sl2 = netdev_priv(ndev);
2103         spin_lock_init(&priv_sl2->lock);
2104         priv_sl2->data = *data;
2105         priv_sl2->pdev = pdev;
2106         priv_sl2->ndev = ndev;
2107         priv_sl2->dev  = &ndev->dev;
2108         priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
2109         priv_sl2->rx_packet_max = max(rx_packet_max, 128);
2110
2111         if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
2112                 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
2113                         ETH_ALEN);
2114                 dev_info(&pdev->dev, "cpsw: Detected MACID = %pM\n", priv_sl2->mac_addr);
2115         } else {
2116                 random_ether_addr(priv_sl2->mac_addr);
2117                 dev_info(&pdev->dev, "cpsw: Random MACID = %pM\n", priv_sl2->mac_addr);
2118         }
2119         memcpy(ndev->dev_addr, priv_sl2->mac_addr, ETH_ALEN);
2120
2121         priv_sl2->slaves = priv->slaves;
2122         priv_sl2->clk = priv->clk;
2123
2124         priv_sl2->coal_intvl = 0;
2125         priv_sl2->bus_freq_mhz = priv->bus_freq_mhz;
2126
2127         priv_sl2->regs = priv->regs;
2128         priv_sl2->host_port = priv->host_port;
2129         priv_sl2->host_port_regs = priv->host_port_regs;
2130         priv_sl2->wr_regs = priv->wr_regs;
2131         priv_sl2->hw_stats = priv->hw_stats;
2132         priv_sl2->dma = priv->dma;
2133         priv_sl2->txch = priv->txch;
2134         priv_sl2->rxch = priv->rxch;
2135         priv_sl2->ale = priv->ale;
2136         priv_sl2->emac_port = 1;
2137         priv->slaves[1].ndev = ndev;
2138         priv_sl2->cpts = priv->cpts;
2139         priv_sl2->version = priv->version;
2140
2141         for (i = 0; i < priv->num_irqs; i++) {
2142                 priv_sl2->irqs_table[i] = priv->irqs_table[i];
2143                 priv_sl2->num_irqs = priv->num_irqs;
2144         }
2145         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2146
2147         ndev->netdev_ops = &cpsw_netdev_ops;
2148         ndev->ethtool_ops = &cpsw_ethtool_ops;
2149         netif_napi_add(ndev, &priv_sl2->napi, cpsw_poll, CPSW_POLL_WEIGHT);
2150
2151         /* register the network device */
2152         SET_NETDEV_DEV(ndev, &pdev->dev);
2153         ret = register_netdev(ndev);
2154         if (ret) {
2155                 dev_err(&pdev->dev, "cpsw: error registering net device\n");
2156                 free_netdev(ndev);
2157                 ret = -ENODEV;
2158         }
2159
2160         return ret;
2161 }
2162
2163 static int cpsw_probe(struct platform_device *pdev)
2164 {
2165         struct cpsw_platform_data       *data;
2166         struct net_device               *ndev;
2167         struct cpsw_priv                *priv;
2168         struct cpdma_params             dma_params;
2169         struct cpsw_ale_params          ale_params;
2170         void __iomem                    *ss_regs;
2171         struct resource                 *res, *ss_res;
2172         u32 slave_offset, sliver_offset, slave_size;
2173         int ret = 0, i;
2174         int irq;
2175
2176         ndev = alloc_etherdev(sizeof(struct cpsw_priv));
2177         if (!ndev) {
2178                 dev_err(&pdev->dev, "error allocating net_device\n");
2179                 return -ENOMEM;
2180         }
2181
2182         platform_set_drvdata(pdev, ndev);
2183         priv = netdev_priv(ndev);
2184         spin_lock_init(&priv->lock);
2185         priv->pdev = pdev;
2186         priv->ndev = ndev;
2187         priv->dev  = &ndev->dev;
2188         priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
2189         priv->rx_packet_max = max(rx_packet_max, 128);
2190         priv->cpts = devm_kzalloc(&pdev->dev, sizeof(struct cpts), GFP_KERNEL);
2191         priv->irq_enabled = true;
2192         if (!priv->cpts) {
2193                 dev_err(&pdev->dev, "error allocating cpts\n");
2194                 ret = -ENOMEM;
2195                 goto clean_ndev_ret;
2196         }
2197
2198         /*
2199          * This may be required here for child devices.
2200          */
2201         pm_runtime_enable(&pdev->dev);
2202
2203         /* Select default pin state */
2204         pinctrl_pm_select_default_state(&pdev->dev);
2205
2206         if (cpsw_probe_dt(&priv->data, pdev)) {
2207                 dev_err(&pdev->dev, "cpsw: platform data missing\n");
2208                 ret = -ENODEV;
2209                 goto clean_runtime_disable_ret;
2210         }
2211         data = &priv->data;
2212
2213         if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
2214                 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
2215                 dev_info(&pdev->dev, "Detected MACID = %pM\n", priv->mac_addr);
2216         } else {
2217                 eth_random_addr(priv->mac_addr);
2218                 dev_info(&pdev->dev, "Random MACID = %pM\n", priv->mac_addr);
2219         }
2220
2221         memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
2222
2223         priv->slaves = devm_kzalloc(&pdev->dev,
2224                                     sizeof(struct cpsw_slave) * data->slaves,
2225                                     GFP_KERNEL);
2226         if (!priv->slaves) {
2227                 ret = -ENOMEM;
2228                 goto clean_runtime_disable_ret;
2229         }
2230         for (i = 0; i < data->slaves; i++)
2231                 priv->slaves[i].slave_num = i;
2232
2233         priv->slaves[0].ndev = ndev;
2234         priv->emac_port = 0;
2235
2236         priv->clk = devm_clk_get(&pdev->dev, "fck");
2237         if (IS_ERR(priv->clk)) {
2238                 dev_err(priv->dev, "fck is not found\n");
2239                 ret = -ENODEV;
2240                 goto clean_runtime_disable_ret;
2241         }
2242         priv->coal_intvl = 0;
2243         priv->bus_freq_mhz = clk_get_rate(priv->clk) / 1000000;
2244
2245         ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2246         ss_regs = devm_ioremap_resource(&pdev->dev, ss_res);
2247         if (IS_ERR(ss_regs)) {
2248                 ret = PTR_ERR(ss_regs);
2249                 goto clean_runtime_disable_ret;
2250         }
2251         priv->regs = ss_regs;
2252         priv->host_port = HOST_PORT_NUM;
2253
2254         /* Need to enable clocks with runtime PM api to access module
2255          * registers
2256          */
2257         pm_runtime_get_sync(&pdev->dev);
2258         priv->version = readl(&priv->regs->id_ver);
2259         pm_runtime_put_sync(&pdev->dev);
2260
2261         res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2262         priv->wr_regs = devm_ioremap_resource(&pdev->dev, res);
2263         if (IS_ERR(priv->wr_regs)) {
2264                 ret = PTR_ERR(priv->wr_regs);
2265                 goto clean_runtime_disable_ret;
2266         }
2267
2268         memset(&dma_params, 0, sizeof(dma_params));
2269         memset(&ale_params, 0, sizeof(ale_params));
2270
2271         switch (priv->version) {
2272         case CPSW_VERSION_1:
2273                 priv->host_port_regs = ss_regs + CPSW1_HOST_PORT_OFFSET;
2274                 priv->cpts->reg      = ss_regs + CPSW1_CPTS_OFFSET;
2275                 priv->hw_stats       = ss_regs + CPSW1_HW_STATS;
2276                 dma_params.dmaregs   = ss_regs + CPSW1_CPDMA_OFFSET;
2277                 dma_params.txhdp     = ss_regs + CPSW1_STATERAM_OFFSET;
2278                 ale_params.ale_regs  = ss_regs + CPSW1_ALE_OFFSET;
2279                 slave_offset         = CPSW1_SLAVE_OFFSET;
2280                 slave_size           = CPSW1_SLAVE_SIZE;
2281                 sliver_offset        = CPSW1_SLIVER_OFFSET;
2282                 dma_params.desc_mem_phys = 0;
2283                 break;
2284         case CPSW_VERSION_2:
2285         case CPSW_VERSION_3:
2286         case CPSW_VERSION_4:
2287                 priv->host_port_regs = ss_regs + CPSW2_HOST_PORT_OFFSET;
2288                 priv->cpts->reg      = ss_regs + CPSW2_CPTS_OFFSET;
2289                 priv->hw_stats       = ss_regs + CPSW2_HW_STATS;
2290                 dma_params.dmaregs   = ss_regs + CPSW2_CPDMA_OFFSET;
2291                 dma_params.txhdp     = ss_regs + CPSW2_STATERAM_OFFSET;
2292                 ale_params.ale_regs  = ss_regs + CPSW2_ALE_OFFSET;
2293                 slave_offset         = CPSW2_SLAVE_OFFSET;
2294                 slave_size           = CPSW2_SLAVE_SIZE;
2295                 sliver_offset        = CPSW2_SLIVER_OFFSET;
2296                 dma_params.desc_mem_phys =
2297                         (u32 __force) ss_res->start + CPSW2_BD_OFFSET;
2298                 break;
2299         default:
2300                 dev_err(priv->dev, "unknown version 0x%08x\n", priv->version);
2301                 ret = -ENODEV;
2302                 goto clean_runtime_disable_ret;
2303         }
2304         for (i = 0; i < priv->data.slaves; i++) {
2305                 struct cpsw_slave *slave = &priv->slaves[i];
2306                 cpsw_slave_init(slave, priv, slave_offset, sliver_offset);
2307                 slave_offset  += slave_size;
2308                 sliver_offset += SLIVER_SIZE;
2309         }
2310
2311         dma_params.dev          = &pdev->dev;
2312         dma_params.rxthresh     = dma_params.dmaregs + CPDMA_RXTHRESH;
2313         dma_params.rxfree       = dma_params.dmaregs + CPDMA_RXFREE;
2314         dma_params.rxhdp        = dma_params.txhdp + CPDMA_RXHDP;
2315         dma_params.txcp         = dma_params.txhdp + CPDMA_TXCP;
2316         dma_params.rxcp         = dma_params.txhdp + CPDMA_RXCP;
2317
2318         dma_params.num_chan             = data->channels;
2319         dma_params.has_soft_reset       = true;
2320         dma_params.min_packet_size      = CPSW_MIN_PACKET_SIZE;
2321         dma_params.desc_mem_size        = data->bd_ram_size;
2322         dma_params.desc_align           = 16;
2323         dma_params.has_ext_regs         = true;
2324         dma_params.desc_hw_addr         = dma_params.desc_mem_phys;
2325
2326         priv->dma = cpdma_ctlr_create(&dma_params);
2327         if (!priv->dma) {
2328                 dev_err(priv->dev, "error initializing dma\n");
2329                 ret = -ENOMEM;
2330                 goto clean_runtime_disable_ret;
2331         }
2332
2333         priv->txch = cpdma_chan_create(priv->dma, tx_chan_num(0),
2334                                        cpsw_tx_handler);
2335         priv->rxch = cpdma_chan_create(priv->dma, rx_chan_num(0),
2336                                        cpsw_rx_handler);
2337
2338         if (WARN_ON(!priv->txch || !priv->rxch)) {
2339                 dev_err(priv->dev, "error initializing dma channels\n");
2340                 ret = -ENOMEM;
2341                 goto clean_dma_ret;
2342         }
2343
2344         ale_params.dev                  = &ndev->dev;
2345         ale_params.ale_ageout           = ale_ageout;
2346         ale_params.ale_entries          = data->ale_entries;
2347         ale_params.ale_ports            = data->slaves;
2348
2349         priv->ale = cpsw_ale_create(&ale_params);
2350         if (!priv->ale) {
2351                 dev_err(priv->dev, "error initializing ale engine\n");
2352                 ret = -ENODEV;
2353                 goto clean_dma_ret;
2354         }
2355
2356         ndev->irq = platform_get_irq(pdev, 1);
2357         if (ndev->irq < 0) {
2358                 dev_err(priv->dev, "error getting irq resource\n");
2359                 ret = -ENOENT;
2360                 goto clean_ale_ret;
2361         }
2362
2363         /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
2364          * MISC IRQs which are always kept disabled with this driver so
2365          * we will not request them.
2366          *
2367          * If anyone wants to implement support for those, make sure to
2368          * first request and append them to irqs_table array.
2369          */
2370
2371         /* RX IRQ */
2372         irq = platform_get_irq(pdev, 1);
2373         if (irq < 0)
2374                 goto clean_ale_ret;
2375
2376         priv->irqs_table[0] = irq;
2377         ret = devm_request_irq(&pdev->dev, irq, cpsw_rx_interrupt,
2378                                0, dev_name(&pdev->dev), priv);
2379         if (ret < 0) {
2380                 dev_err(priv->dev, "error attaching irq (%d)\n", ret);
2381                 goto clean_ale_ret;
2382         }
2383
2384         /* TX IRQ */
2385         irq = platform_get_irq(pdev, 2);
2386         if (irq < 0)
2387                 goto clean_ale_ret;
2388
2389         priv->irqs_table[1] = irq;
2390         ret = devm_request_irq(&pdev->dev, irq, cpsw_tx_interrupt,
2391                                0, dev_name(&pdev->dev), priv);
2392         if (ret < 0) {
2393                 dev_err(priv->dev, "error attaching irq (%d)\n", ret);
2394                 goto clean_ale_ret;
2395         }
2396         priv->num_irqs = 2;
2397
2398         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2399
2400         ndev->netdev_ops = &cpsw_netdev_ops;
2401         ndev->ethtool_ops = &cpsw_ethtool_ops;
2402         netif_napi_add(ndev, &priv->napi, cpsw_poll, CPSW_POLL_WEIGHT);
2403
2404         /* register the network device */
2405         SET_NETDEV_DEV(ndev, &pdev->dev);
2406         ret = register_netdev(ndev);
2407         if (ret) {
2408                 dev_err(priv->dev, "error registering net device\n");
2409                 ret = -ENODEV;
2410                 goto clean_ale_ret;
2411         }
2412
2413         cpsw_notice(priv, probe, "initialized device (regs %pa, irq %d)\n",
2414                     &ss_res->start, ndev->irq);
2415
2416         if (priv->data.dual_emac) {
2417                 ret = cpsw_probe_dual_emac(pdev, priv);
2418                 if (ret) {
2419                         cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
2420                         goto clean_ale_ret;
2421                 }
2422         }
2423
2424         return 0;
2425
2426 clean_ale_ret:
2427         cpsw_ale_destroy(priv->ale);
2428 clean_dma_ret:
2429         cpdma_chan_destroy(priv->txch);
2430         cpdma_chan_destroy(priv->rxch);
2431         cpdma_ctlr_destroy(priv->dma);
2432 clean_runtime_disable_ret:
2433         pm_runtime_disable(&pdev->dev);
2434 clean_ndev_ret:
2435         free_netdev(priv->ndev);
2436         return ret;
2437 }
2438
2439 static int cpsw_remove_child_device(struct device *dev, void *c)
2440 {
2441         struct platform_device *pdev = to_platform_device(dev);
2442
2443         of_device_unregister(pdev);
2444
2445         return 0;
2446 }
2447
2448 static int cpsw_remove(struct platform_device *pdev)
2449 {
2450         struct net_device *ndev = platform_get_drvdata(pdev);
2451         struct cpsw_priv *priv = netdev_priv(ndev);
2452
2453         if (priv->data.dual_emac)
2454                 unregister_netdev(cpsw_get_slave_ndev(priv, 1));
2455         unregister_netdev(ndev);
2456
2457         cpsw_ale_destroy(priv->ale);
2458         cpdma_chan_destroy(priv->txch);
2459         cpdma_chan_destroy(priv->rxch);
2460         cpdma_ctlr_destroy(priv->dma);
2461         pm_runtime_disable(&pdev->dev);
2462         device_for_each_child(&pdev->dev, NULL, cpsw_remove_child_device);
2463         if (priv->data.dual_emac)
2464                 free_netdev(cpsw_get_slave_ndev(priv, 1));
2465         free_netdev(ndev);
2466         return 0;
2467 }
2468
2469 #ifdef CONFIG_PM_SLEEP
2470 static int cpsw_suspend(struct device *dev)
2471 {
2472         struct platform_device  *pdev = to_platform_device(dev);
2473         struct net_device       *ndev = platform_get_drvdata(pdev);
2474         struct cpsw_priv        *priv = netdev_priv(ndev);
2475
2476         if (priv->data.dual_emac) {
2477                 int i;
2478
2479                 for (i = 0; i < priv->data.slaves; i++) {
2480                         if (netif_running(priv->slaves[i].ndev))
2481                                 cpsw_ndo_stop(priv->slaves[i].ndev);
2482                         soft_reset_slave(priv->slaves + i);
2483                 }
2484         } else {
2485                 if (netif_running(ndev))
2486                         cpsw_ndo_stop(ndev);
2487                 for_each_slave(priv, soft_reset_slave);
2488         }
2489
2490         pm_runtime_put_sync(&pdev->dev);
2491
2492         /* Select sleep pin state */
2493         pinctrl_pm_select_sleep_state(&pdev->dev);
2494
2495         return 0;
2496 }
2497
2498 static int cpsw_resume(struct device *dev)
2499 {
2500         struct platform_device  *pdev = to_platform_device(dev);
2501         struct net_device       *ndev = platform_get_drvdata(pdev);
2502         struct cpsw_priv        *priv = netdev_priv(ndev);
2503
2504         pm_runtime_get_sync(&pdev->dev);
2505
2506         /* Select default pin state */
2507         pinctrl_pm_select_default_state(&pdev->dev);
2508
2509         if (priv->data.dual_emac) {
2510                 int i;
2511
2512                 for (i = 0; i < priv->data.slaves; i++) {
2513                         if (netif_running(priv->slaves[i].ndev))
2514                                 cpsw_ndo_open(priv->slaves[i].ndev);
2515                 }
2516         } else {
2517                 if (netif_running(ndev))
2518                         cpsw_ndo_open(ndev);
2519         }
2520         return 0;
2521 }
2522 #endif
2523
2524 static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
2525
2526 static const struct of_device_id cpsw_of_mtable[] = {
2527         { .compatible = "ti,cpsw", },
2528         { /* sentinel */ },
2529 };
2530 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
2531
2532 static struct platform_driver cpsw_driver = {
2533         .driver = {
2534                 .name    = "cpsw",
2535                 .pm      = &cpsw_pm_ops,
2536                 .of_match_table = cpsw_of_mtable,
2537         },
2538         .probe = cpsw_probe,
2539         .remove = cpsw_remove,
2540 };
2541
2542 static int __init cpsw_init(void)
2543 {
2544         return platform_driver_register(&cpsw_driver);
2545 }
2546 late_initcall(cpsw_init);
2547
2548 static void __exit cpsw_exit(void)
2549 {
2550         platform_driver_unregister(&cpsw_driver);
2551 }
2552 module_exit(cpsw_exit);
2553
2554 MODULE_LICENSE("GPL");
2555 MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
2556 MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
2557 MODULE_DESCRIPTION("TI CPSW Ethernet driver");