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 << 15)
 131 #define CPSW_FIFO_DUAL_MAC_MODE         (1 << 15)
 132 #define CPSW_FIFO_RATE_LIMIT_MODE       (2 << 15)
 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_BIT8             (1<<8)  /* ts_ttl_nonzero? */
 252 #define TS_ANNEX_D_EN       (1<<4)  /* Time Sync Annex D enable */
 253 #define TS_LTYPE2_EN        (1<<3)  /* Time Sync LTYPE 2 enable */
 254 #define TS_LTYPE1_EN        (1<<2)  /* Time Sync LTYPE 1 enable */
 255 #define TS_TX_EN            (1<<1)  /* Time Sync Transmit Enable */
 256 #define TS_RX_EN            (1<<0)  /* Time Sync Receive Enable */
 257
 258 #define CTRL_TS_BITS \
 259         (TS_320 | TS_319 | TS_132 | TS_131 | TS_130 | TS_129 | TS_BIT8 | \
 260          TS_ANNEX_D_EN | TS_LTYPE1_EN)
 261
 262 #define CTRL_ALL_TS_MASK (CTRL_TS_BITS | TS_TX_EN | TS_RX_EN)
 263 #define CTRL_TX_TS_BITS  (CTRL_TS_BITS | TS_TX_EN)
 264 #define CTRL_RX_TS_BITS  (CTRL_TS_BITS | TS_RX_EN)
 265
 266 /* Bit definitions for the CPSW2_TS_SEQ_MTYPE register */
 267 #define TS_SEQ_ID_OFFSET_SHIFT   (16)    /* Time Sync Sequence ID Offset */
 268 #define TS_SEQ_ID_OFFSET_MASK    (0x3f)
 269 #define TS_MSG_TYPE_EN_SHIFT     (0)     /* Time Sync Message Type Enable */
 270 #define TS_MSG_TYPE_EN_MASK      (0xffff)
 271
 272 /* The PTP event messages - Sync, Delay_Req, Pdelay_Req, and Pdelay_Resp. */
 273 #define EVENT_MSG_BITS ((1<<0) | (1<<1) | (1<<2) | (1<<3))
 274
 275 /* Bit definitions for the CPSW1_TS_CTL register */
 276 #define CPSW_V1_TS_RX_EN                BIT(0)
 277 #define CPSW_V1_TS_TX_EN                BIT(4)
 278 #define CPSW_V1_MSG_TYPE_OFS            16
 279
 280 /* Bit definitions for the CPSW1_TS_SEQ_LTYPE register */
 281 #define CPSW_V1_SEQ_ID_OFS_SHIFT        16
 282
 283 struct cpsw_host_regs {
 284         u32     max_blks;
 285         u32     blk_cnt;
 286         u32     tx_in_ctl;
 287         u32     port_vlan;
 288         u32     tx_pri_map;
 289         u32     cpdma_tx_pri_map;
 290         u32     cpdma_rx_chan_map;
 291 };
 292
 293 struct cpsw_sliver_regs {
 294         u32     id_ver;
 295         u32     mac_control;
 296         u32     mac_status;
 297         u32     soft_reset;
 298         u32     rx_maxlen;
 299         u32     __reserved_0;
 300         u32     rx_pause;
 301         u32     tx_pause;
 302         u32     __reserved_1;
 303         u32     rx_pri_map;
 304 };
 305
 306 struct cpsw_hw_stats {
 307         u32     rxgoodframes;
 308         u32     rxbroadcastframes;
 309         u32     rxmulticastframes;
 310         u32     rxpauseframes;
 311         u32     rxcrcerrors;
 312         u32     rxaligncodeerrors;
 313         u32     rxoversizedframes;
 314         u32     rxjabberframes;
 315         u32     rxundersizedframes;
 316         u32     rxfragments;
 317         u32     __pad_0[2];
 318         u32     rxoctets;
 319         u32     txgoodframes;
 320         u32     txbroadcastframes;
 321         u32     txmulticastframes;
 322         u32     txpauseframes;
 323         u32     txdeferredframes;
 324         u32     txcollisionframes;
 325         u32     txsinglecollframes;
 326         u32     txmultcollframes;
 327         u32     txexcessivecollisions;
 328         u32     txlatecollisions;
 329         u32     txunderrun;
 330         u32     txcarriersenseerrors;
 331         u32     txoctets;
 332         u32     octetframes64;
 333         u32     octetframes65t127;
 334         u32     octetframes128t255;
 335         u32     octetframes256t511;
 336         u32     octetframes512t1023;
 337         u32     octetframes1024tup;
 338         u32     netoctets;
 339         u32     rxsofoverruns;
 340         u32     rxmofoverruns;
 341         u32     rxdmaoverruns;
 342 };
 343
 344 struct cpsw_slave {
 345         void __iomem                    *regs;
 346         struct cpsw_sliver_regs __iomem *sliver;
 347         int                             slave_num;
 348         u32                             mac_control;
 349         struct cpsw_slave_data          *data;
 350         struct phy_device               *phy;
 351         struct net_device               *ndev;
 352         u32                             port_vlan;
 353         u32                             open_stat;
 354 };
 355
 356 static inline u32 slave_read(struct cpsw_slave *slave, u32 offset)
 357 {
 358         return __raw_readl(slave->regs + offset);
 359 }
 360
 361 static inline void slave_write(struct cpsw_slave *slave, u32 val, u32 offset)
 362 {
 363         __raw_writel(val, slave->regs + offset);
 364 }
 365
 366 struct cpsw_priv {
 367         spinlock_t                      lock;
 368         struct platform_device          *pdev;
 369         struct net_device               *ndev;
 370         struct napi_struct              napi;
 371         struct device                   *dev;
 372         struct cpsw_platform_data       data;
 373         struct cpsw_ss_regs __iomem     *regs;
 374         struct cpsw_wr_regs __iomem     *wr_regs;
 375         u8 __iomem                      *hw_stats;
 376         struct cpsw_host_regs __iomem   *host_port_regs;
 377         u32                             msg_enable;
 378         u32                             version;
 379         u32                             coal_intvl;
 380         u32                             bus_freq_mhz;
 381         struct net_device_stats         stats;
 382         int                             rx_packet_max;
 383         int                             host_port;
 384         struct clk                      *clk;
 385         u8                              mac_addr[ETH_ALEN];
 386         struct cpsw_slave               *slaves;
 387         struct cpdma_ctlr               *dma;
 388         struct cpdma_chan               *txch, *rxch;
 389         struct cpsw_ale                 *ale;
 390         /* snapshot of IRQ numbers */
 391         u32 irqs_table[4];
 392         u32 num_irqs;
 393         bool irq_enabled;
 394         struct cpts *cpts;
 395         u32 emac_port;
 396 };
 397
 398 struct cpsw_stats {
 399         char stat_string[ETH_GSTRING_LEN];
 400         int type;
 401         int sizeof_stat;
 402         int stat_offset;
 403 };
 404
 405 enum {
 406         CPSW_STATS,
 407         CPDMA_RX_STATS,
 408         CPDMA_TX_STATS,
 409 };
 410
 411 #define CPSW_STAT(m)            CPSW_STATS,                             \
 412                                 sizeof(((struct cpsw_hw_stats *)0)->m), \
 413                                 offsetof(struct cpsw_hw_stats, m)
 414 #define CPDMA_RX_STAT(m)        CPDMA_RX_STATS,                            \
 415                                 sizeof(((struct cpdma_chan_stats *)0)->m), \
 416                                 offsetof(struct cpdma_chan_stats, m)
 417 #define CPDMA_TX_STAT(m)        CPDMA_TX_STATS,                            \
 418                                 sizeof(((struct cpdma_chan_stats *)0)->m), \
 419                                 offsetof(struct cpdma_chan_stats, m)
 420
 421 static const struct cpsw_stats cpsw_gstrings_stats[] = {
 422         { "Good Rx Frames", CPSW_STAT(rxgoodframes) },
 423         { "Broadcast Rx Frames", CPSW_STAT(rxbroadcastframes) },
 424         { "Multicast Rx Frames", CPSW_STAT(rxmulticastframes) },
 425         { "Pause Rx Frames", CPSW_STAT(rxpauseframes) },
 426         { "Rx CRC Errors", CPSW_STAT(rxcrcerrors) },
 427         { "Rx Align/Code Errors", CPSW_STAT(rxaligncodeerrors) },
 428         { "Oversize Rx Frames", CPSW_STAT(rxoversizedframes) },
 429         { "Rx Jabbers", CPSW_STAT(rxjabberframes) },
 430         { "Undersize (Short) Rx Frames", CPSW_STAT(rxundersizedframes) },
 431         { "Rx Fragments", CPSW_STAT(rxfragments) },
 432         { "Rx Octets", CPSW_STAT(rxoctets) },
 433         { "Good Tx Frames", CPSW_STAT(txgoodframes) },
 434         { "Broadcast Tx Frames", CPSW_STAT(txbroadcastframes) },
 435         { "Multicast Tx Frames", CPSW_STAT(txmulticastframes) },
 436         { "Pause Tx Frames", CPSW_STAT(txpauseframes) },
 437         { "Deferred Tx Frames", CPSW_STAT(txdeferredframes) },
 438         { "Collisions", CPSW_STAT(txcollisionframes) },
 439         { "Single Collision Tx Frames", CPSW_STAT(txsinglecollframes) },
 440         { "Multiple Collision Tx Frames", CPSW_STAT(txmultcollframes) },
 441         { "Excessive Collisions", CPSW_STAT(txexcessivecollisions) },
 442         { "Late Collisions", CPSW_STAT(txlatecollisions) },
 443         { "Tx Underrun", CPSW_STAT(txunderrun) },
 444         { "Carrier Sense Errors", CPSW_STAT(txcarriersenseerrors) },
 445         { "Tx Octets", CPSW_STAT(txoctets) },
 446         { "Rx + Tx 64 Octet Frames", CPSW_STAT(octetframes64) },
 447         { "Rx + Tx 65-127 Octet Frames", CPSW_STAT(octetframes65t127) },
 448         { "Rx + Tx 128-255 Octet Frames", CPSW_STAT(octetframes128t255) },
 449         { "Rx + Tx 256-511 Octet Frames", CPSW_STAT(octetframes256t511) },
 450         { "Rx + Tx 512-1023 Octet Frames", CPSW_STAT(octetframes512t1023) },
 451         { "Rx + Tx 1024-Up Octet Frames", CPSW_STAT(octetframes1024tup) },
 452         { "Net Octets", CPSW_STAT(netoctets) },
 453         { "Rx Start of Frame Overruns", CPSW_STAT(rxsofoverruns) },
 454         { "Rx Middle of Frame Overruns", CPSW_STAT(rxmofoverruns) },
 455         { "Rx DMA Overruns", CPSW_STAT(rxdmaoverruns) },
 456         { "Rx DMA chan: head_enqueue", CPDMA_RX_STAT(head_enqueue) },
 457         { "Rx DMA chan: tail_enqueue", CPDMA_RX_STAT(tail_enqueue) },
 458         { "Rx DMA chan: pad_enqueue", CPDMA_RX_STAT(pad_enqueue) },
 459         { "Rx DMA chan: misqueued", CPDMA_RX_STAT(misqueued) },
 460         { "Rx DMA chan: desc_alloc_fail", CPDMA_RX_STAT(desc_alloc_fail) },
 461         { "Rx DMA chan: pad_alloc_fail", CPDMA_RX_STAT(pad_alloc_fail) },
 462         { "Rx DMA chan: runt_receive_buf", CPDMA_RX_STAT(runt_receive_buff) },
 463         { "Rx DMA chan: runt_transmit_buf", CPDMA_RX_STAT(runt_transmit_buff) },
 464         { "Rx DMA chan: empty_dequeue", CPDMA_RX_STAT(empty_dequeue) },
 465         { "Rx DMA chan: busy_dequeue", CPDMA_RX_STAT(busy_dequeue) },
 466         { "Rx DMA chan: good_dequeue", CPDMA_RX_STAT(good_dequeue) },
 467         { "Rx DMA chan: requeue", CPDMA_RX_STAT(requeue) },
 468         { "Rx DMA chan: teardown_dequeue", CPDMA_RX_STAT(teardown_dequeue) },
 469         { "Tx DMA chan: head_enqueue", CPDMA_TX_STAT(head_enqueue) },
 470         { "Tx DMA chan: tail_enqueue", CPDMA_TX_STAT(tail_enqueue) },
 471         { "Tx DMA chan: pad_enqueue", CPDMA_TX_STAT(pad_enqueue) },
 472         { "Tx DMA chan: misqueued", CPDMA_TX_STAT(misqueued) },
 473         { "Tx DMA chan: desc_alloc_fail", CPDMA_TX_STAT(desc_alloc_fail) },
 474         { "Tx DMA chan: pad_alloc_fail", CPDMA_TX_STAT(pad_alloc_fail) },
 475         { "Tx DMA chan: runt_receive_buf", CPDMA_TX_STAT(runt_receive_buff) },
 476         { "Tx DMA chan: runt_transmit_buf", CPDMA_TX_STAT(runt_transmit_buff) },
 477         { "Tx DMA chan: empty_dequeue", CPDMA_TX_STAT(empty_dequeue) },
 478         { "Tx DMA chan: busy_dequeue", CPDMA_TX_STAT(busy_dequeue) },
 479         { "Tx DMA chan: good_dequeue", CPDMA_TX_STAT(good_dequeue) },
 480         { "Tx DMA chan: requeue", CPDMA_TX_STAT(requeue) },
 481         { "Tx DMA chan: teardown_dequeue", CPDMA_TX_STAT(teardown_dequeue) },
 482 };
 483
 484 #define CPSW_STATS_LEN  ARRAY_SIZE(cpsw_gstrings_stats)
 485
 486 #define napi_to_priv(napi)      container_of(napi, struct cpsw_priv, napi)
 487 #define for_each_slave(priv, func, arg...)                              \
 488         do {                                                            \
 489                 struct cpsw_slave *slave;                               \
 490                 int n;                                                  \
 491                 if (priv->data.dual_emac)                               \
 492                         (func)((priv)->slaves + priv->emac_port, ##arg);\
 493                 else                                                    \
 494                         for (n = (priv)->data.slaves,                   \
 495                                         slave = (priv)->slaves;         \
 496                                         n; n--)                         \
 497                                 (func)(slave++, ##arg);                 \
 498         } while (0)
 499 #define cpsw_get_slave_ndev(priv, __slave_no__)                         \
 500         (priv->slaves[__slave_no__].ndev)
 501 #define cpsw_get_slave_priv(priv, __slave_no__)                         \
 502         ((priv->slaves[__slave_no__].ndev) ?                            \
 503                 netdev_priv(priv->slaves[__slave_no__].ndev) : NULL)    \
 504
 505 #define cpsw_dual_emac_src_port_detect(status, priv, ndev, skb)         \
 506         do {                                                            \
 507                 if (!priv->data.dual_emac)                              \
 508                         break;                                          \
 509                 if (CPDMA_RX_SOURCE_PORT(status) == 1) {                \
 510                         ndev = cpsw_get_slave_ndev(priv, 0);            \
 511                         priv = netdev_priv(ndev);                       \
 512                         skb->dev = ndev;                                \
 513                 } else if (CPDMA_RX_SOURCE_PORT(status) == 2) {         \
 514                         ndev = cpsw_get_slave_ndev(priv, 1);            \
 515                         priv = netdev_priv(ndev);                       \
 516                         skb->dev = ndev;                                \
 517                 }                                                       \
 518         } while (0)
 519 #define cpsw_add_mcast(priv, addr)                                      \
 520         do {                                                            \
 521                 if (priv->data.dual_emac) {                             \
 522                         struct cpsw_slave *slave = priv->slaves +       \
 523                                                 priv->emac_port;        \
 524                         int slave_port = cpsw_get_slave_port(priv,      \
 525                                                 slave->slave_num);      \
 526                         cpsw_ale_add_mcast(priv->ale, addr,             \
 527                                 1 << slave_port | 1 << priv->host_port, \
 528                                 ALE_VLAN, slave->port_vlan, 0);         \
 529                 } else {                                                \
 530                         cpsw_ale_add_mcast(priv->ale, addr,             \
 531                                 ALE_ALL_PORTS << priv->host_port,       \
 532                                 0, 0, 0);                               \
 533                 }                                                       \
 534         } while (0)
 535
 536 static inline int cpsw_get_slave_port(struct cpsw_priv *priv, u32 slave_num)
 537 {
 538         if (priv->host_port == 0)
 539                 return slave_num + 1;
 540         else
 541                 return slave_num;
 542 }
 543
 544 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
 545 {
 546         struct cpsw_priv *priv = netdev_priv(ndev);
 547
 548         if (ndev->flags & IFF_PROMISC) {
 549                 /* Enable promiscuous mode */
 550                 dev_err(priv->dev, "Ignoring Promiscuous mode\n");
 551                 return;
 552         }
 553
 554         /* Clear all mcast from ALE */
 555         cpsw_ale_flush_multicast(priv->ale, ALE_ALL_PORTS << priv->host_port);
 556
 557         if (!netdev_mc_empty(ndev)) {
 558                 struct netdev_hw_addr *ha;
 559
 560                 /* program multicast address list into ALE register */
 561                 netdev_for_each_mc_addr(ha, ndev) {
 562                         cpsw_add_mcast(priv, (u8 *)ha->addr);
 563                 }
 564         }
 565 }
 566
 567 static void cpsw_intr_enable(struct cpsw_priv *priv)
 568 {
 569         __raw_writel(0xFF, &priv->wr_regs->tx_en);
 570         __raw_writel(0xFF, &priv->wr_regs->rx_en);
 571
 572         cpdma_ctlr_int_ctrl(priv->dma, true);
 573         return;
 574 }
 575
 576 static void cpsw_intr_disable(struct cpsw_priv *priv)
 577 {
 578         __raw_writel(0, &priv->wr_regs->tx_en);
 579         __raw_writel(0, &priv->wr_regs->rx_en);
 580
 581         cpdma_ctlr_int_ctrl(priv->dma, false);
 582         return;
 583 }
 584
 585 void cpsw_tx_handler(void *token, int len, int status)
 586 {
 587         struct sk_buff          *skb = token;
 588         struct net_device       *ndev = skb->dev;
 589         struct cpsw_priv        *priv = netdev_priv(ndev);
 590
 591         /* Check whether the queue is stopped due to stalled tx dma, if the
 592          * queue is stopped then start the queue as we have free desc for tx
 593          */
 594         if (unlikely(netif_queue_stopped(ndev)))
 595                 netif_wake_queue(ndev);
 596         cpts_tx_timestamp(priv->cpts, skb);
 597         priv->stats.tx_packets++;
 598         priv->stats.tx_bytes += len;
 599         dev_kfree_skb_any(skb);
 600 }
 601
 602 void cpsw_rx_handler(void *token, int len, int status)
 603 {
 604         struct sk_buff          *skb = token;
 605         struct sk_buff          *new_skb;
 606         struct net_device       *ndev = skb->dev;
 607         struct cpsw_priv        *priv = netdev_priv(ndev);
 608         int                     ret = 0;
 609
 610         cpsw_dual_emac_src_port_detect(status, priv, ndev, skb);
 611
 612         if (unlikely(status < 0)) {
 613                 /* the interface is going down, skbs are purged */
 614                 dev_kfree_skb_any(skb);
 615                 return;
 616         }
 617
 618         new_skb = netdev_alloc_skb_ip_align(ndev, priv->rx_packet_max);
 619         if (new_skb) {
 620                 skb_put(skb, len);
 621                 cpts_rx_timestamp(priv->cpts, skb);
 622                 skb->protocol = eth_type_trans(skb, ndev);
 623                 netif_receive_skb(skb);
 624                 priv->stats.rx_bytes += len;
 625                 priv->stats.rx_packets++;
 626         } else {
 627                 priv->stats.rx_dropped++;
 628                 new_skb = skb;
 629         }
 630
 631         ret = cpdma_chan_submit(priv->rxch, new_skb, new_skb->data,
 632                         skb_tailroom(new_skb), 0);
 633         if (WARN_ON(ret < 0))
 634                 dev_kfree_skb_any(new_skb);
 635 }
 636
 637 static irqreturn_t cpsw_interrupt(int irq, void *dev_id)
 638 {
 639         struct cpsw_priv *priv = dev_id;
 640
 641         cpsw_intr_disable(priv);
 642         if (priv->irq_enabled == true) {
 643                 cpsw_disable_irq(priv);
 644                 priv->irq_enabled = false;
 645         }
 646
 647         if (netif_running(priv->ndev)) {
 648                 napi_schedule(&priv->napi);
 649                 return IRQ_HANDLED;
 650         }
 651
 652         priv = cpsw_get_slave_priv(priv, 1);
 653         if (!priv)
 654                 return IRQ_NONE;
 655
 656         if (netif_running(priv->ndev)) {
 657                 napi_schedule(&priv->napi);
 658                 return IRQ_HANDLED;
 659         }
 660         return IRQ_NONE;
 661 }
 662
 663 static int cpsw_poll(struct napi_struct *napi, int budget)
 664 {
 665         struct cpsw_priv        *priv = napi_to_priv(napi);
 666         int                     num_tx, num_rx;
 667
 668         num_tx = cpdma_chan_process(priv->txch, 128);
 669         if (num_tx)
 670                 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
 671
 672         num_rx = cpdma_chan_process(priv->rxch, budget);
 673         if (num_rx < budget) {
 674                 struct cpsw_priv *prim_cpsw;
 675
 676                 napi_complete(napi);
 677                 cpsw_intr_enable(priv);
 678                 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
 679                 prim_cpsw = cpsw_get_slave_priv(priv, 0);
 680                 if (prim_cpsw->irq_enabled == false) {
 681                         prim_cpsw->irq_enabled = true;
 682                         cpsw_enable_irq(priv);
 683                 }
 684         }
 685
 686         if (num_rx || num_tx)
 687                 cpsw_dbg(priv, intr, "poll %d rx, %d tx pkts\n",
 688                          num_rx, num_tx);
 689
 690         return num_rx;
 691 }
 692
 693 static inline void soft_reset(const char *module, void __iomem *reg)
 694 {
 695         unsigned long timeout = jiffies + HZ;
 696
 697         __raw_writel(1, reg);
 698         do {
 699                 cpu_relax();
 700         } while ((__raw_readl(reg) & 1) && time_after(timeout, jiffies));
 701
 702         WARN(__raw_readl(reg) & 1, "failed to soft-reset %s\n", module);
 703 }
 704
 705 #define mac_hi(mac)     (((mac)[0] << 0) | ((mac)[1] << 8) |    \
 706                          ((mac)[2] << 16) | ((mac)[3] << 24))
 707 #define mac_lo(mac)     (((mac)[4] << 0) | ((mac)[5] << 8))
 708
 709 static void cpsw_set_slave_mac(struct cpsw_slave *slave,
 710                                struct cpsw_priv *priv)
 711 {
 712         slave_write(slave, mac_hi(priv->mac_addr), SA_HI);
 713         slave_write(slave, mac_lo(priv->mac_addr), SA_LO);
 714 }
 715
 716 static void _cpsw_adjust_link(struct cpsw_slave *slave,
 717                               struct cpsw_priv *priv, bool *link)
 718 {
 719         struct phy_device       *phy = slave->phy;
 720         u32                     mac_control = 0;
 721         u32                     slave_port;
 722
 723         if (!phy)
 724                 return;
 725
 726         slave_port = cpsw_get_slave_port(priv, slave->slave_num);
 727
 728         if (phy->link) {
 729                 mac_control = priv->data.mac_control;
 730
 731                 /* enable forwarding */
 732                 cpsw_ale_control_set(priv->ale, slave_port,
 733                                      ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 734
 735                 if (phy->speed == 1000)
 736                         mac_control |= BIT(7);  /* GIGABITEN    */
 737                 if (phy->duplex)
 738                         mac_control |= BIT(0);  /* FULLDUPLEXEN */
 739
 740                 /* set speed_in input in case RMII mode is used in 100Mbps */
 741                 if (phy->speed == 100)
 742                         mac_control |= BIT(15);
 743
 744                 *link = true;
 745         } else {
 746                 mac_control = 0;
 747                 /* disable forwarding */
 748                 cpsw_ale_control_set(priv->ale, slave_port,
 749                                      ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
 750         }
 751
 752         if (mac_control != slave->mac_control) {
 753                 phy_print_status(phy);
 754                 __raw_writel(mac_control, &slave->sliver->mac_control);
 755         }
 756
 757         slave->mac_control = mac_control;
 758 }
 759
 760 static void cpsw_adjust_link(struct net_device *ndev)
 761 {
 762         struct cpsw_priv        *priv = netdev_priv(ndev);
 763         bool                    link = false;
 764
 765         for_each_slave(priv, _cpsw_adjust_link, priv, &link);
 766
 767         if (link) {
 768                 netif_carrier_on(ndev);
 769                 if (netif_running(ndev))
 770                         netif_wake_queue(ndev);
 771         } else {
 772                 netif_carrier_off(ndev);
 773                 netif_stop_queue(ndev);
 774         }
 775 }
 776
 777 static int cpsw_get_coalesce(struct net_device *ndev,
 778                                 struct ethtool_coalesce *coal)
 779 {
 780         struct cpsw_priv *priv = netdev_priv(ndev);
 781
 782         coal->rx_coalesce_usecs = priv->coal_intvl;
 783         return 0;
 784 }
 785
 786 static int cpsw_set_coalesce(struct net_device *ndev,
 787                                 struct ethtool_coalesce *coal)
 788 {
 789         struct cpsw_priv *priv = netdev_priv(ndev);
 790         u32 int_ctrl;
 791         u32 num_interrupts = 0;
 792         u32 prescale = 0;
 793         u32 addnl_dvdr = 1;
 794         u32 coal_intvl = 0;
 795
 796         if (!coal->rx_coalesce_usecs)
 797                 return -EINVAL;
 798
 799         coal_intvl = coal->rx_coalesce_usecs;
 800
 801         int_ctrl =  readl(&priv->wr_regs->int_control);
 802         prescale = priv->bus_freq_mhz * 4;
 803
 804         if (coal_intvl < CPSW_CMINTMIN_INTVL)
 805                 coal_intvl = CPSW_CMINTMIN_INTVL;
 806
 807         if (coal_intvl > CPSW_CMINTMAX_INTVL) {
 808                 /* Interrupt pacer works with 4us Pulse, we can
 809                  * throttle further by dilating the 4us pulse.
 810                  */
 811                 addnl_dvdr = CPSW_INTPRESCALE_MASK / prescale;
 812
 813                 if (addnl_dvdr > 1) {
 814                         prescale *= addnl_dvdr;
 815                         if (coal_intvl > (CPSW_CMINTMAX_INTVL * addnl_dvdr))
 816                                 coal_intvl = (CPSW_CMINTMAX_INTVL
 817                                                 * addnl_dvdr);
 818                 } else {
 819                         addnl_dvdr = 1;
 820                         coal_intvl = CPSW_CMINTMAX_INTVL;
 821                 }
 822         }
 823
 824         num_interrupts = (1000 * addnl_dvdr) / coal_intvl;
 825         writel(num_interrupts, &priv->wr_regs->rx_imax);
 826         writel(num_interrupts, &priv->wr_regs->tx_imax);
 827
 828         int_ctrl |= CPSW_INTPACEEN;
 829         int_ctrl &= (~CPSW_INTPRESCALE_MASK);
 830         int_ctrl |= (prescale & CPSW_INTPRESCALE_MASK);
 831         writel(int_ctrl, &priv->wr_regs->int_control);
 832
 833         cpsw_notice(priv, timer, "Set coalesce to %d usecs.\n", coal_intvl);
 834         if (priv->data.dual_emac) {
 835                 int i;
 836
 837                 for (i = 0; i < priv->data.slaves; i++) {
 838                         priv = netdev_priv(priv->slaves[i].ndev);
 839                         priv->coal_intvl = coal_intvl;
 840                 }
 841         } else {
 842                 priv->coal_intvl = coal_intvl;
 843         }
 844
 845         return 0;
 846 }
 847
 848 static int cpsw_get_sset_count(struct net_device *ndev, int sset)
 849 {
 850         switch (sset) {
 851         case ETH_SS_STATS:
 852                 return CPSW_STATS_LEN;
 853         default:
 854                 return -EOPNOTSUPP;
 855         }
 856 }
 857
 858 static void cpsw_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
 859 {
 860         u8 *p = data;
 861         int i;
 862
 863         switch (stringset) {
 864         case ETH_SS_STATS:
 865                 for (i = 0; i < CPSW_STATS_LEN; i++) {
 866                         memcpy(p, cpsw_gstrings_stats[i].stat_string,
 867                                ETH_GSTRING_LEN);
 868                         p += ETH_GSTRING_LEN;
 869                 }
 870                 break;
 871         }
 872 }
 873
 874 static void cpsw_get_ethtool_stats(struct net_device *ndev,
 875                                     struct ethtool_stats *stats, u64 *data)
 876 {
 877         struct cpsw_priv *priv = netdev_priv(ndev);
 878         struct cpdma_chan_stats rx_stats;
 879         struct cpdma_chan_stats tx_stats;
 880         u32 val;
 881         u8 *p;
 882         int i;
 883
 884         /* Collect Davinci CPDMA stats for Rx and Tx Channel */
 885         cpdma_chan_get_stats(priv->rxch, &rx_stats);
 886         cpdma_chan_get_stats(priv->txch, &tx_stats);
 887
 888         for (i = 0; i < CPSW_STATS_LEN; i++) {
 889                 switch (cpsw_gstrings_stats[i].type) {
 890                 case CPSW_STATS:
 891                         val = readl(priv->hw_stats +
 892                                     cpsw_gstrings_stats[i].stat_offset);
 893                         data[i] = val;
 894                         break;
 895
 896                 case CPDMA_RX_STATS:
 897                         p = (u8 *)&rx_stats +
 898                                 cpsw_gstrings_stats[i].stat_offset;
 899                         data[i] = *(u32 *)p;
 900                         break;
 901
 902                 case CPDMA_TX_STATS:
 903                         p = (u8 *)&tx_stats +
 904                                 cpsw_gstrings_stats[i].stat_offset;
 905                         data[i] = *(u32 *)p;
 906                         break;
 907                 }
 908         }
 909 }
 910
 911 static inline int __show_stat(char *buf, int maxlen, const char *name, u32 val)
 912 {
 913         static char *leader = "........................................";
 914
 915         if (!val)
 916                 return 0;
 917         else
 918                 return snprintf(buf, maxlen, "%s %s %10d\n", name,
 919                                 leader + strlen(name), val);
 920 }
 921
 922 static int cpsw_common_res_usage_state(struct cpsw_priv *priv)
 923 {
 924         u32 i;
 925         u32 usage_count = 0;
 926
 927         if (!priv->data.dual_emac)
 928                 return 0;
 929
 930         for (i = 0; i < priv->data.slaves; i++)
 931                 if (priv->slaves[i].open_stat)
 932                         usage_count++;
 933
 934         return usage_count;
 935 }
 936
 937 static inline int cpsw_tx_packet_submit(struct net_device *ndev,
 938                         struct cpsw_priv *priv, struct sk_buff *skb)
 939 {
 940         if (!priv->data.dual_emac)
 941                 return cpdma_chan_submit(priv->txch, skb, skb->data,
 942                                   skb->len, 0);
 943
 944         if (ndev == cpsw_get_slave_ndev(priv, 0))
 945                 return cpdma_chan_submit(priv->txch, skb, skb->data,
 946                                   skb->len, 1);
 947         else
 948                 return cpdma_chan_submit(priv->txch, skb, skb->data,
 949                                   skb->len, 2);
 950 }
 951
 952 static inline void cpsw_add_dual_emac_def_ale_entries(
 953                 struct cpsw_priv *priv, struct cpsw_slave *slave,
 954                 u32 slave_port)
 955 {
 956         u32 port_mask = 1 << slave_port | 1 << priv->host_port;
 957
 958         if (priv->version == CPSW_VERSION_1)
 959                 slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
 960         else
 961                 slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
 962         cpsw_ale_add_vlan(priv->ale, slave->port_vlan, port_mask,
 963                           port_mask, port_mask, 0);
 964         cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
 965                            port_mask, ALE_VLAN, slave->port_vlan, 0);
 966         cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
 967                 priv->host_port, ALE_VLAN, slave->port_vlan);
 968 }
 969
 970 static void soft_reset_slave(struct cpsw_slave *slave)
 971 {
 972         char name[32];
 973
 974         snprintf(name, sizeof(name), "slave-%d", slave->slave_num);
 975         soft_reset(name, &slave->sliver->soft_reset);
 976 }
 977
 978 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
 979 {
 980         u32 slave_port;
 981
 982         soft_reset_slave(slave);
 983
 984         /* setup priority mapping */
 985         __raw_writel(RX_PRIORITY_MAPPING, &slave->sliver->rx_pri_map);
 986
 987         switch (priv->version) {
 988         case CPSW_VERSION_1:
 989                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
 990                 break;
 991         case CPSW_VERSION_2:
 992         case CPSW_VERSION_3:
 993         case CPSW_VERSION_4:
 994                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
 995                 break;
 996         }
 997
 998         /* setup max packet size, and mac address */
 999         __raw_writel(priv->rx_packet_max, &slave->sliver->rx_maxlen);
1000         cpsw_set_slave_mac(slave, priv);
1001
1002         slave->mac_control = 0; /* no link yet */
1003
1004         slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1005
1006         if (priv->data.dual_emac)
1007                 cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
1008         else
1009                 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1010                                    1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
1011
1012         slave->phy = phy_connect(priv->ndev, slave->data->phy_id,
1013                                  &cpsw_adjust_link, slave->data->phy_if);
1014         if (IS_ERR(slave->phy)) {
1015                 dev_err(priv->dev, "phy %s not found on slave %d\n",
1016                         slave->data->phy_id, slave->slave_num);
1017                 slave->phy = NULL;
1018         } else {
1019                 dev_info(priv->dev, "phy found : id is : 0x%x\n",
1020                          slave->phy->phy_id);
1021                 phy_start(slave->phy);
1022
1023                 /* Configure GMII_SEL register */
1024                 cpsw_phy_sel(&priv->pdev->dev, slave->phy->interface,
1025                              slave->slave_num);
1026         }
1027 }
1028
1029 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
1030 {
1031         const int vlan = priv->data.default_vlan;
1032         const int port = priv->host_port;
1033         u32 reg;
1034         int i;
1035
1036         reg = (priv->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
1037                CPSW2_PORT_VLAN;
1038
1039         writel(vlan, &priv->host_port_regs->port_vlan);
1040
1041         for (i = 0; i < priv->data.slaves; i++)
1042                 slave_write(priv->slaves + i, vlan, reg);
1043
1044         cpsw_ale_add_vlan(priv->ale, vlan, ALE_ALL_PORTS << port,
1045                           ALE_ALL_PORTS << port, ALE_ALL_PORTS << port,
1046                           (ALE_PORT_1 | ALE_PORT_2) << port);
1047 }
1048
1049 static void cpsw_init_host_port(struct cpsw_priv *priv)
1050 {
1051         u32 control_reg;
1052         u32 fifo_mode;
1053
1054         /* soft reset the controller and initialize ale */
1055         soft_reset("cpsw", &priv->regs->soft_reset);
1056         cpsw_ale_start(priv->ale);
1057
1058         /* switch to vlan unaware mode */
1059         cpsw_ale_control_set(priv->ale, priv->host_port, ALE_VLAN_AWARE,
1060                              CPSW_ALE_VLAN_AWARE);
1061         control_reg = readl(&priv->regs->control);
1062         control_reg |= CPSW_VLAN_AWARE;
1063         writel(control_reg, &priv->regs->control);
1064         fifo_mode = (priv->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
1065                      CPSW_FIFO_NORMAL_MODE;
1066         writel(fifo_mode, &priv->host_port_regs->tx_in_ctl);
1067
1068         /* setup host port priority mapping */
1069         __raw_writel(CPDMA_TX_PRIORITY_MAP,
1070                      &priv->host_port_regs->cpdma_tx_pri_map);
1071         __raw_writel(0, &priv->host_port_regs->cpdma_rx_chan_map);
1072
1073         cpsw_ale_control_set(priv->ale, priv->host_port,
1074                              ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
1075
1076         if (!priv->data.dual_emac) {
1077                 cpsw_ale_add_ucast(priv->ale, priv->mac_addr, priv->host_port,
1078                                    0, 0);
1079                 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1080                                    1 << priv->host_port, 0, 0, ALE_MCAST_FWD_2);
1081         }
1082 }
1083
1084 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_priv *priv)
1085 {
1086         if (!slave->phy)
1087                 return;
1088         phy_stop(slave->phy);
1089         phy_disconnect(slave->phy);
1090         slave->phy = NULL;
1091 }
1092
1093 static int cpsw_ndo_open(struct net_device *ndev)
1094 {
1095         struct cpsw_priv *priv = netdev_priv(ndev);
1096         struct cpsw_priv *prim_cpsw;
1097         int i, ret;
1098         u32 reg;
1099
1100         if (!cpsw_common_res_usage_state(priv))
1101                 cpsw_intr_disable(priv);
1102         netif_carrier_off(ndev);
1103
1104         pm_runtime_get_sync(&priv->pdev->dev);
1105
1106         reg = priv->version;
1107
1108         dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
1109                  CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
1110                  CPSW_RTL_VERSION(reg));
1111
1112         /* initialize host and slave ports */
1113         if (!cpsw_common_res_usage_state(priv))
1114                 cpsw_init_host_port(priv);
1115         for_each_slave(priv, cpsw_slave_open, priv);
1116
1117         /* Add default VLAN */
1118         if (!priv->data.dual_emac)
1119                 cpsw_add_default_vlan(priv);
1120
1121         if (!cpsw_common_res_usage_state(priv)) {
1122                 /* setup tx dma to fixed prio and zero offset */
1123                 cpdma_control_set(priv->dma, CPDMA_TX_PRIO_FIXED, 1);
1124                 cpdma_control_set(priv->dma, CPDMA_RX_BUFFER_OFFSET, 0);
1125
1126                 /* disable priority elevation */
1127                 __raw_writel(0, &priv->regs->ptype);
1128
1129                 /* enable statistics collection only on all ports */
1130                 __raw_writel(0x7, &priv->regs->stat_port_en);
1131
1132                 if (WARN_ON(!priv->data.rx_descs))
1133                         priv->data.rx_descs = 128;
1134
1135                 for (i = 0; i < priv->data.rx_descs; i++) {
1136                         struct sk_buff *skb;
1137
1138                         ret = -ENOMEM;
1139                         skb = __netdev_alloc_skb_ip_align(priv->ndev,
1140                                         priv->rx_packet_max, GFP_KERNEL);
1141                         if (!skb)
1142                                 goto err_cleanup;
1143                         ret = cpdma_chan_submit(priv->rxch, skb, skb->data,
1144                                         skb_tailroom(skb), 0);
1145                         if (ret < 0) {
1146                                 kfree_skb(skb);
1147                                 goto err_cleanup;
1148                         }
1149                 }
1150                 /* continue even if we didn't manage to submit all
1151                  * receive descs
1152                  */
1153                 cpsw_info(priv, ifup, "submitted %d rx descriptors\n", i);
1154         }
1155
1156         /* Enable Interrupt pacing if configured */
1157         if (priv->coal_intvl != 0) {
1158                 struct ethtool_coalesce coal;
1159
1160                 coal.rx_coalesce_usecs = (priv->coal_intvl << 4);
1161                 cpsw_set_coalesce(ndev, &coal);
1162         }
1163
1164         prim_cpsw = cpsw_get_slave_priv(priv, 0);
1165         if (prim_cpsw->irq_enabled == false) {
1166                 if ((priv == prim_cpsw) || !netif_running(prim_cpsw->ndev)) {
1167                         prim_cpsw->irq_enabled = true;
1168                         cpsw_enable_irq(prim_cpsw);
1169                 }
1170         }
1171
1172         napi_enable(&priv->napi);
1173         cpdma_ctlr_start(priv->dma);
1174         cpsw_intr_enable(priv);
1175         cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
1176         cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
1177
1178         if (priv->data.dual_emac)
1179                 priv->slaves[priv->emac_port].open_stat = true;
1180         return 0;
1181
1182 err_cleanup:
1183         cpdma_ctlr_stop(priv->dma);
1184         for_each_slave(priv, cpsw_slave_stop, priv);
1185         pm_runtime_put_sync(&priv->pdev->dev);
1186         netif_carrier_off(priv->ndev);
1187         return ret;
1188 }
1189
1190 static int cpsw_ndo_stop(struct net_device *ndev)
1191 {
1192         struct cpsw_priv *priv = netdev_priv(ndev);
1193
1194         cpsw_info(priv, ifdown, "shutting down cpsw device\n");
1195         netif_stop_queue(priv->ndev);
1196         napi_disable(&priv->napi);
1197         netif_carrier_off(priv->ndev);
1198
1199         if (cpsw_common_res_usage_state(priv) <= 1) {
1200                 cpsw_intr_disable(priv);
1201                 cpdma_ctlr_int_ctrl(priv->dma, false);
1202                 cpdma_ctlr_stop(priv->dma);
1203                 cpsw_ale_stop(priv->ale);
1204         }
1205         for_each_slave(priv, cpsw_slave_stop, priv);
1206         pm_runtime_put_sync(&priv->pdev->dev);
1207         if (priv->data.dual_emac)
1208                 priv->slaves[priv->emac_port].open_stat = false;
1209         return 0;
1210 }
1211
1212 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
1213                                        struct net_device *ndev)
1214 {
1215         struct cpsw_priv *priv = netdev_priv(ndev);
1216         int ret;
1217
1218         ndev->trans_start = jiffies;
1219
1220         if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
1221                 cpsw_err(priv, tx_err, "packet pad failed\n");
1222                 priv->stats.tx_dropped++;
1223                 return NETDEV_TX_OK;
1224         }
1225
1226         if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
1227                                 priv->cpts->tx_enable)
1228                 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
1229
1230         skb_tx_timestamp(skb);
1231
1232         ret = cpsw_tx_packet_submit(ndev, priv, skb);
1233         if (unlikely(ret != 0)) {
1234                 cpsw_err(priv, tx_err, "desc submit failed\n");
1235                 goto fail;
1236         }
1237
1238         /* If there is no more tx desc left free then we need to
1239          * tell the kernel to stop sending us tx frames.
1240          */
1241         if (unlikely(!cpdma_check_free_tx_desc(priv->txch)))
1242                 netif_stop_queue(ndev);
1243
1244         return NETDEV_TX_OK;
1245 fail:
1246         priv->stats.tx_dropped++;
1247         netif_stop_queue(ndev);
1248         return NETDEV_TX_BUSY;
1249 }
1250
1251 static void cpsw_ndo_change_rx_flags(struct net_device *ndev, int flags)
1252 {
1253         /*
1254          * The switch cannot operate in promiscuous mode without substantial
1255          * headache.  For promiscuous mode to work, we would need to put the
1256          * ALE in bypass mode and route all traffic to the host port.
1257          * Subsequently, the host will need to operate as a "bridge", learn,
1258          * and flood as needed.  For now, we simply complain here and
1259          * do nothing about it :-)
1260          */
1261         if ((flags & IFF_PROMISC) && (ndev->flags & IFF_PROMISC))
1262                 dev_err(&ndev->dev, "promiscuity ignored!\n");
1263
1264         /*
1265          * The switch cannot filter multicast traffic unless it is configured
1266          * in "VLAN Aware" mode.  Unfortunately, VLAN awareness requires a
1267          * whole bunch of additional logic that this driver does not implement
1268          * at present.
1269          */
1270         if ((flags & IFF_ALLMULTI) && !(ndev->flags & IFF_ALLMULTI))
1271                 dev_err(&ndev->dev, "multicast traffic cannot be filtered!\n");
1272 }
1273
1274 #ifdef CONFIG_TI_CPTS
1275
1276 static void cpsw_hwtstamp_v1(struct cpsw_priv *priv)
1277 {
1278         struct cpsw_slave *slave = &priv->slaves[priv->data.active_slave];
1279         u32 ts_en, seq_id;
1280
1281         if (!priv->cpts->tx_enable && !priv->cpts->rx_enable) {
1282                 slave_write(slave, 0, CPSW1_TS_CTL);
1283                 return;
1284         }
1285
1286         seq_id = (30 << CPSW_V1_SEQ_ID_OFS_SHIFT) | ETH_P_1588;
1287         ts_en = EVENT_MSG_BITS << CPSW_V1_MSG_TYPE_OFS;
1288
1289         if (priv->cpts->tx_enable)
1290                 ts_en |= CPSW_V1_TS_TX_EN;
1291
1292         if (priv->cpts->rx_enable)
1293                 ts_en |= CPSW_V1_TS_RX_EN;
1294
1295         slave_write(slave, ts_en, CPSW1_TS_CTL);
1296         slave_write(slave, seq_id, CPSW1_TS_SEQ_LTYPE);
1297 }
1298
1299 static void cpsw_hwtstamp_v2(struct cpsw_priv *priv)
1300 {
1301         struct cpsw_slave *slave;
1302         u32 ctrl, mtype;
1303
1304         if (priv->data.dual_emac)
1305                 slave = &priv->slaves[priv->emac_port];
1306         else
1307                 slave = &priv->slaves[priv->data.active_slave];
1308
1309         ctrl = slave_read(slave, CPSW2_CONTROL);
1310         ctrl &= ~CTRL_ALL_TS_MASK;
1311
1312         if (priv->cpts->tx_enable)
1313                 ctrl |= CTRL_TX_TS_BITS;
1314
1315         if (priv->cpts->rx_enable)
1316                 ctrl |= CTRL_RX_TS_BITS;
1317
1318         mtype = (30 << TS_SEQ_ID_OFFSET_SHIFT) | EVENT_MSG_BITS;
1319
1320         slave_write(slave, mtype, CPSW2_TS_SEQ_MTYPE);
1321         slave_write(slave, ctrl, CPSW2_CONTROL);
1322         __raw_writel(ETH_P_1588, &priv->regs->ts_ltype);
1323 }
1324
1325 static int cpsw_hwtstamp_ioctl(struct net_device *dev, struct ifreq *ifr)
1326 {
1327         struct cpsw_priv *priv = netdev_priv(dev);
1328         struct cpts *cpts = priv->cpts;
1329         struct hwtstamp_config cfg;
1330
1331         if (priv->version != CPSW_VERSION_1 &&
1332             priv->version != CPSW_VERSION_2)
1333                 return -EOPNOTSUPP;
1334
1335         if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
1336                 return -EFAULT;
1337
1338         /* reserved for future extensions */
1339         if (cfg.flags)
1340                 return -EINVAL;
1341
1342         if (cfg.tx_type != HWTSTAMP_TX_OFF && cfg.tx_type != HWTSTAMP_TX_ON)
1343                 return -ERANGE;
1344
1345         switch (cfg.rx_filter) {
1346         case HWTSTAMP_FILTER_NONE:
1347                 cpts->rx_enable = 0;
1348                 break;
1349         case HWTSTAMP_FILTER_ALL:
1350         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
1351         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
1352         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
1353                 return -ERANGE;
1354         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
1355         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
1356         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
1357         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
1358         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
1359         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
1360         case HWTSTAMP_FILTER_PTP_V2_EVENT:
1361         case HWTSTAMP_FILTER_PTP_V2_SYNC:
1362         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
1363                 cpts->rx_enable = 1;
1364                 cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
1365                 break;
1366         default:
1367                 return -ERANGE;
1368         }
1369
1370         cpts->tx_enable = cfg.tx_type == HWTSTAMP_TX_ON;
1371
1372         switch (priv->version) {
1373         case CPSW_VERSION_1:
1374                 cpsw_hwtstamp_v1(priv);
1375                 break;
1376         case CPSW_VERSION_2:
1377                 cpsw_hwtstamp_v2(priv);
1378                 break;
1379         default:
1380                 WARN_ON(1);
1381         }
1382
1383         return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1384 }
1385
1386 #endif /*CONFIG_TI_CPTS*/
1387
1388 static int cpsw_ndo_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
1389 {
1390         struct cpsw_priv *priv = netdev_priv(dev);
1391         struct mii_ioctl_data *data = if_mii(req);
1392         int slave_no = cpsw_slave_index(priv);
1393
1394         if (!netif_running(dev))
1395                 return -EINVAL;
1396
1397         switch (cmd) {
1398 #ifdef CONFIG_TI_CPTS
1399         case SIOCSHWTSTAMP:
1400                 return cpsw_hwtstamp_ioctl(dev, req);
1401 #endif
1402         case SIOCGMIIPHY:
1403                 data->phy_id = priv->slaves[slave_no].phy->addr;
1404                 break;
1405         default:
1406                 return -ENOTSUPP;
1407         }
1408
1409         return 0;
1410 }
1411
1412 static void cpsw_ndo_tx_timeout(struct net_device *ndev)
1413 {
1414         struct cpsw_priv *priv = netdev_priv(ndev);
1415
1416         cpsw_err(priv, tx_err, "transmit timeout, restarting dma\n");
1417         priv->stats.tx_errors++;
1418         cpsw_intr_disable(priv);
1419         cpdma_ctlr_int_ctrl(priv->dma, false);
1420         cpdma_chan_stop(priv->txch);
1421         cpdma_chan_start(priv->txch);
1422         cpdma_ctlr_int_ctrl(priv->dma, true);
1423         cpsw_intr_enable(priv);
1424         cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
1425         cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
1426
1427 }
1428
1429 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
1430 {
1431         struct cpsw_priv *priv = netdev_priv(ndev);
1432         struct sockaddr *addr = (struct sockaddr *)p;
1433         int flags = 0;
1434         u16 vid = 0;
1435
1436         if (!is_valid_ether_addr(addr->sa_data))
1437                 return -EADDRNOTAVAIL;
1438
1439         if (priv->data.dual_emac) {
1440                 vid = priv->slaves[priv->emac_port].port_vlan;
1441                 flags = ALE_VLAN;
1442         }
1443
1444         cpsw_ale_del_ucast(priv->ale, priv->mac_addr, priv->host_port,
1445                            flags, vid);
1446         cpsw_ale_add_ucast(priv->ale, addr->sa_data, priv->host_port,
1447                            flags, vid);
1448
1449         memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
1450         memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
1451         for_each_slave(priv, cpsw_set_slave_mac, priv);
1452
1453         return 0;
1454 }
1455
1456 static struct net_device_stats *cpsw_ndo_get_stats(struct net_device *ndev)
1457 {
1458         struct cpsw_priv *priv = netdev_priv(ndev);
1459         return &priv->stats;
1460 }
1461
1462 #ifdef CONFIG_NET_POLL_CONTROLLER
1463 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1464 {
1465         struct cpsw_priv *priv = netdev_priv(ndev);
1466
1467         cpsw_intr_disable(priv);
1468         cpdma_ctlr_int_ctrl(priv->dma, false);
1469         cpsw_interrupt(ndev->irq, priv);
1470         cpdma_ctlr_int_ctrl(priv->dma, true);
1471         cpsw_intr_enable(priv);
1472         cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
1473         cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
1474
1475 }
1476 #endif
1477
1478 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
1479                                 unsigned short vid)
1480 {
1481         int ret;
1482
1483         ret = cpsw_ale_add_vlan(priv->ale, vid,
1484                                 ALE_ALL_PORTS << priv->host_port,
1485                                 0, ALE_ALL_PORTS << priv->host_port,
1486                                 (ALE_PORT_1 | ALE_PORT_2) << priv->host_port);
1487         if (ret != 0)
1488                 return ret;
1489
1490         ret = cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1491                                  priv->host_port, ALE_VLAN, vid);
1492         if (ret != 0)
1493                 goto clean_vid;
1494
1495         ret = cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1496                                  ALE_ALL_PORTS << priv->host_port,
1497                                  ALE_VLAN, vid, 0);
1498         if (ret != 0)
1499                 goto clean_vlan_ucast;
1500         return 0;
1501
1502 clean_vlan_ucast:
1503         cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1504                             priv->host_port, ALE_VLAN, vid);
1505 clean_vid:
1506         cpsw_ale_del_vlan(priv->ale, vid, 0);
1507         return ret;
1508 }
1509
1510 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1511                                     __be16 proto, u16 vid)
1512 {
1513         struct cpsw_priv *priv = netdev_priv(ndev);
1514
1515         if (vid == priv->data.default_vlan)
1516                 return 0;
1517
1518         dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1519         return cpsw_add_vlan_ale_entry(priv, vid);
1520 }
1521
1522 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1523                                      __be16 proto, u16 vid)
1524 {
1525         struct cpsw_priv *priv = netdev_priv(ndev);
1526         int ret;
1527
1528         if (vid == priv->data.default_vlan)
1529                 return 0;
1530
1531         dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1532         ret = cpsw_ale_del_vlan(priv->ale, vid, 0);
1533         if (ret != 0)
1534                 return ret;
1535
1536         ret = cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1537                                  priv->host_port, ALE_VLAN, vid);
1538         if (ret != 0)
1539                 return ret;
1540
1541         return cpsw_ale_del_mcast(priv->ale, priv->ndev->broadcast,
1542                                   0, ALE_VLAN, vid);
1543 }
1544
1545 static const struct net_device_ops cpsw_netdev_ops = {
1546         .ndo_open               = cpsw_ndo_open,
1547         .ndo_stop               = cpsw_ndo_stop,
1548         .ndo_start_xmit         = cpsw_ndo_start_xmit,
1549         .ndo_change_rx_flags    = cpsw_ndo_change_rx_flags,
1550         .ndo_set_mac_address    = cpsw_ndo_set_mac_address,
1551         .ndo_do_ioctl           = cpsw_ndo_ioctl,
1552         .ndo_validate_addr      = eth_validate_addr,
1553         .ndo_change_mtu         = eth_change_mtu,
1554         .ndo_tx_timeout         = cpsw_ndo_tx_timeout,
1555         .ndo_get_stats          = cpsw_ndo_get_stats,
1556         .ndo_set_rx_mode        = cpsw_ndo_set_rx_mode,
1557 #ifdef CONFIG_NET_POLL_CONTROLLER
1558         .ndo_poll_controller    = cpsw_ndo_poll_controller,
1559 #endif
1560         .ndo_vlan_rx_add_vid    = cpsw_ndo_vlan_rx_add_vid,
1561         .ndo_vlan_rx_kill_vid   = cpsw_ndo_vlan_rx_kill_vid,
1562 };
1563
1564 static void cpsw_get_drvinfo(struct net_device *ndev,
1565                              struct ethtool_drvinfo *info)
1566 {
1567         struct cpsw_priv *priv = netdev_priv(ndev);
1568
1569         strlcpy(info->driver, "TI CPSW Driver v1.0", sizeof(info->driver));
1570         strlcpy(info->version, "1.0", sizeof(info->version));
1571         strlcpy(info->bus_info, priv->pdev->name, sizeof(info->bus_info));
1572 }
1573
1574 static u32 cpsw_get_msglevel(struct net_device *ndev)
1575 {
1576         struct cpsw_priv *priv = netdev_priv(ndev);
1577         return priv->msg_enable;
1578 }
1579
1580 static void cpsw_set_msglevel(struct net_device *ndev, u32 value)
1581 {
1582         struct cpsw_priv *priv = netdev_priv(ndev);
1583         priv->msg_enable = value;
1584 }
1585
1586 static int cpsw_get_ts_info(struct net_device *ndev,
1587                             struct ethtool_ts_info *info)
1588 {
1589 #ifdef CONFIG_TI_CPTS
1590         struct cpsw_priv *priv = netdev_priv(ndev);
1591
1592         info->so_timestamping =
1593                 SOF_TIMESTAMPING_TX_HARDWARE |
1594                 SOF_TIMESTAMPING_TX_SOFTWARE |
1595                 SOF_TIMESTAMPING_RX_HARDWARE |
1596                 SOF_TIMESTAMPING_RX_SOFTWARE |
1597                 SOF_TIMESTAMPING_SOFTWARE |
1598                 SOF_TIMESTAMPING_RAW_HARDWARE;
1599         info->phc_index = priv->cpts->phc_index;
1600         info->tx_types =
1601                 (1 << HWTSTAMP_TX_OFF) |
1602                 (1 << HWTSTAMP_TX_ON);
1603         info->rx_filters =
1604                 (1 << HWTSTAMP_FILTER_NONE) |
1605                 (1 << HWTSTAMP_FILTER_PTP_V2_EVENT);
1606 #else
1607         info->so_timestamping =
1608                 SOF_TIMESTAMPING_TX_SOFTWARE |
1609                 SOF_TIMESTAMPING_RX_SOFTWARE |
1610                 SOF_TIMESTAMPING_SOFTWARE;
1611         info->phc_index = -1;
1612         info->tx_types = 0;
1613         info->rx_filters = 0;
1614 #endif
1615         return 0;
1616 }
1617
1618 static int cpsw_get_settings(struct net_device *ndev,
1619                              struct ethtool_cmd *ecmd)
1620 {
1621         struct cpsw_priv *priv = netdev_priv(ndev);
1622         int slave_no = cpsw_slave_index(priv);
1623
1624         if (priv->slaves[slave_no].phy)
1625                 return phy_ethtool_gset(priv->slaves[slave_no].phy, ecmd);
1626         else
1627                 return -EOPNOTSUPP;
1628 }
1629
1630 static int cpsw_set_settings(struct net_device *ndev, struct ethtool_cmd *ecmd)
1631 {
1632         struct cpsw_priv *priv = netdev_priv(ndev);
1633         int slave_no = cpsw_slave_index(priv);
1634
1635         if (priv->slaves[slave_no].phy)
1636                 return phy_ethtool_sset(priv->slaves[slave_no].phy, ecmd);
1637         else
1638                 return -EOPNOTSUPP;
1639 }
1640
1641 static void cpsw_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1642 {
1643         struct cpsw_priv *priv = netdev_priv(ndev);
1644         int slave_no = cpsw_slave_index(priv);
1645
1646         wol->supported = 0;
1647         wol->wolopts = 0;
1648
1649         if (priv->slaves[slave_no].phy)
1650                 phy_ethtool_get_wol(priv->slaves[slave_no].phy, wol);
1651 }
1652
1653 static int cpsw_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1654 {
1655         struct cpsw_priv *priv = netdev_priv(ndev);
1656         int slave_no = cpsw_slave_index(priv);
1657
1658         if (priv->slaves[slave_no].phy)
1659                 return phy_ethtool_set_wol(priv->slaves[slave_no].phy, wol);
1660         else
1661                 return -EOPNOTSUPP;
1662 }
1663
1664 static const struct ethtool_ops cpsw_ethtool_ops = {
1665         .get_drvinfo    = cpsw_get_drvinfo,
1666         .get_msglevel   = cpsw_get_msglevel,
1667         .set_msglevel   = cpsw_set_msglevel,
1668         .get_link       = ethtool_op_get_link,
1669         .get_ts_info    = cpsw_get_ts_info,
1670         .get_settings   = cpsw_get_settings,
1671         .set_settings   = cpsw_set_settings,
1672         .get_coalesce   = cpsw_get_coalesce,
1673         .set_coalesce   = cpsw_set_coalesce,
1674         .get_sset_count         = cpsw_get_sset_count,
1675         .get_strings            = cpsw_get_strings,
1676         .get_ethtool_stats      = cpsw_get_ethtool_stats,
1677         .get_wol        = cpsw_get_wol,
1678         .set_wol        = cpsw_set_wol,
1679 };
1680
1681 static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv,
1682                             u32 slave_reg_ofs, u32 sliver_reg_ofs)
1683 {
1684         void __iomem            *regs = priv->regs;
1685         int                     slave_num = slave->slave_num;
1686         struct cpsw_slave_data  *data = priv->data.slave_data + slave_num;
1687
1688         slave->data     = data;
1689         slave->regs     = regs + slave_reg_ofs;
1690         slave->sliver   = regs + sliver_reg_ofs;
1691         slave->port_vlan = data->dual_emac_res_vlan;
1692 }
1693
1694 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1695                          struct platform_device *pdev)
1696 {
1697         struct device_node *node = pdev->dev.of_node;
1698         struct device_node *slave_node;
1699         int i = 0, ret;
1700         u32 prop;
1701
1702         if (!node)
1703                 return -EINVAL;
1704
1705         if (of_property_read_u32(node, "slaves", &prop)) {
1706                 pr_err("Missing slaves property in the DT.\n");
1707                 return -EINVAL;
1708         }
1709         data->slaves = prop;
1710
1711         if (of_property_read_u32(node, "active_slave", &prop)) {
1712                 pr_err("Missing active_slave property in the DT.\n");
1713                 return -EINVAL;
1714         }
1715         data->active_slave = prop;
1716
1717         if (of_property_read_u32(node, "cpts_clock_mult", &prop)) {
1718                 pr_err("Missing cpts_clock_mult property in the DT.\n");
1719                 return -EINVAL;
1720         }
1721         data->cpts_clock_mult = prop;
1722
1723         if (of_property_read_u32(node, "cpts_clock_shift", &prop)) {
1724                 pr_err("Missing cpts_clock_shift property in the DT.\n");
1725                 return -EINVAL;
1726         }
1727         data->cpts_clock_shift = prop;
1728
1729         data->slave_data = devm_kzalloc(&pdev->dev, data->slaves
1730                                         * sizeof(struct cpsw_slave_data),
1731                                         GFP_KERNEL);
1732         if (!data->slave_data)
1733                 return -ENOMEM;
1734
1735         if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1736                 pr_err("Missing cpdma_channels property in the DT.\n");
1737                 return -EINVAL;
1738         }
1739         data->channels = prop;
1740
1741         if (of_property_read_u32(node, "ale_entries", &prop)) {
1742                 pr_err("Missing ale_entries property in the DT.\n");
1743                 return -EINVAL;
1744         }
1745         data->ale_entries = prop;
1746
1747         if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1748                 pr_err("Missing bd_ram_size property in the DT.\n");
1749                 return -EINVAL;
1750         }
1751         data->bd_ram_size = prop;
1752
1753         if (of_property_read_u32(node, "rx_descs", &prop)) {
1754                 pr_err("Missing rx_descs property in the DT.\n");
1755                 return -EINVAL;
1756         }
1757         data->rx_descs = prop;
1758
1759         if (of_property_read_u32(node, "mac_control", &prop)) {
1760                 pr_err("Missing mac_control property in the DT.\n");
1761                 return -EINVAL;
1762         }
1763         data->mac_control = prop;
1764
1765         if (of_property_read_bool(node, "dual_emac"))
1766                 data->dual_emac = 1;
1767
1768         /*
1769          * Populate all the child nodes here...
1770          */
1771         ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
1772         /* We do not want to force this, as in some cases may not have child */
1773         if (ret)
1774                 pr_warn("Doesn't have any child node\n");
1775
1776         for_each_child_of_node(node, slave_node) {
1777                 struct cpsw_slave_data *slave_data = data->slave_data + i;
1778                 const void *mac_addr = NULL;
1779                 u32 phyid;
1780                 int lenp;
1781                 const __be32 *parp;
1782                 struct device_node *mdio_node;
1783                 struct platform_device *mdio;
1784
1785                 /* This is no slave child node, continue */
1786                 if (strcmp(slave_node->name, "slave"))
1787                         continue;
1788
1789                 parp = of_get_property(slave_node, "phy_id", &lenp);
1790                 if ((parp == NULL) || (lenp != (sizeof(void *) * 2))) {
1791                         pr_err("Missing slave[%d] phy_id property\n", i);
1792                         return -EINVAL;
1793                 }
1794                 mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
1795                 phyid = be32_to_cpup(parp+1);
1796                 mdio = of_find_device_by_node(mdio_node);
1797                 snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
1798                          PHY_ID_FMT, mdio->name, phyid);
1799
1800                 mac_addr = of_get_mac_address(slave_node);
1801                 if (mac_addr)
1802                         memcpy(slave_data->mac_addr, mac_addr, ETH_ALEN);
1803
1804                 slave_data->phy_if = of_get_phy_mode(slave_node);
1805
1806                 if (data->dual_emac) {
1807                         if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
1808                                                  &prop)) {
1809                                 pr_err("Missing dual_emac_res_vlan in DT.\n");
1810                                 slave_data->dual_emac_res_vlan = i+1;
1811                                 pr_err("Using %d as Reserved VLAN for %d slave\n",
1812                                        slave_data->dual_emac_res_vlan, i);
1813                         } else {
1814                                 slave_data->dual_emac_res_vlan = prop;
1815                         }
1816                 }
1817
1818                 i++;
1819         }
1820
1821         return 0;
1822 }
1823
1824 static int cpsw_probe_dual_emac(struct platform_device *pdev,
1825                                 struct cpsw_priv *priv)
1826 {
1827         struct cpsw_platform_data       *data = &priv->data;
1828         struct net_device               *ndev;
1829         struct cpsw_priv                *priv_sl2;
1830         int ret = 0, i;
1831
1832         ndev = alloc_etherdev(sizeof(struct cpsw_priv));
1833         if (!ndev) {
1834                 pr_err("cpsw: error allocating net_device\n");
1835                 return -ENOMEM;
1836         }
1837
1838         priv_sl2 = netdev_priv(ndev);
1839         spin_lock_init(&priv_sl2->lock);
1840         priv_sl2->data = *data;
1841         priv_sl2->pdev = pdev;
1842         priv_sl2->ndev = ndev;
1843         priv_sl2->dev  = &ndev->dev;
1844         priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1845         priv_sl2->rx_packet_max = max(rx_packet_max, 128);
1846
1847         if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
1848                 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
1849                         ETH_ALEN);
1850                 pr_info("cpsw: Detected MACID = %pM\n", priv_sl2->mac_addr);
1851         } else {
1852                 random_ether_addr(priv_sl2->mac_addr);
1853                 pr_info("cpsw: Random MACID = %pM\n", priv_sl2->mac_addr);
1854         }
1855         memcpy(ndev->dev_addr, priv_sl2->mac_addr, ETH_ALEN);
1856
1857         priv_sl2->slaves = priv->slaves;
1858         priv_sl2->clk = priv->clk;
1859
1860         priv_sl2->coal_intvl = 0;
1861         priv_sl2->bus_freq_mhz = priv->bus_freq_mhz;
1862
1863         priv_sl2->regs = priv->regs;
1864         priv_sl2->host_port = priv->host_port;
1865         priv_sl2->host_port_regs = priv->host_port_regs;
1866         priv_sl2->wr_regs = priv->wr_regs;
1867         priv_sl2->hw_stats = priv->hw_stats;
1868         priv_sl2->dma = priv->dma;
1869         priv_sl2->txch = priv->txch;
1870         priv_sl2->rxch = priv->rxch;
1871         priv_sl2->ale = priv->ale;
1872         priv_sl2->emac_port = 1;
1873         priv->slaves[1].ndev = ndev;
1874         priv_sl2->cpts = priv->cpts;
1875         priv_sl2->version = priv->version;
1876
1877         for (i = 0; i < priv->num_irqs; i++) {
1878                 priv_sl2->irqs_table[i] = priv->irqs_table[i];
1879                 priv_sl2->num_irqs = priv->num_irqs;
1880         }
1881         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1882
1883         ndev->netdev_ops = &cpsw_netdev_ops;
1884         SET_ETHTOOL_OPS(ndev, &cpsw_ethtool_ops);
1885         netif_napi_add(ndev, &priv_sl2->napi, cpsw_poll, CPSW_POLL_WEIGHT);
1886
1887         /* register the network device */
1888         SET_NETDEV_DEV(ndev, &pdev->dev);
1889         ret = register_netdev(ndev);
1890         if (ret) {
1891                 pr_err("cpsw: error registering net device\n");
1892                 free_netdev(ndev);
1893                 ret = -ENODEV;
1894         }
1895
1896         return ret;
1897 }
1898
1899 static int cpsw_probe(struct platform_device *pdev)
1900 {
1901         struct cpsw_platform_data       *data;
1902         struct net_device               *ndev;
1903         struct cpsw_priv                *priv;
1904         struct cpdma_params             dma_params;
1905         struct cpsw_ale_params          ale_params;
1906         void __iomem                    *ss_regs;
1907         struct resource                 *res, *ss_res;
1908         u32 slave_offset, sliver_offset, slave_size;
1909         int ret = 0, i, k = 0;
1910
1911         ndev = alloc_etherdev(sizeof(struct cpsw_priv));
1912         if (!ndev) {
1913                 pr_err("error allocating net_device\n");
1914                 return -ENOMEM;
1915         }
1916
1917         platform_set_drvdata(pdev, ndev);
1918         priv = netdev_priv(ndev);
1919         spin_lock_init(&priv->lock);
1920         priv->pdev = pdev;
1921         priv->ndev = ndev;
1922         priv->dev  = &ndev->dev;
1923         priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1924         priv->rx_packet_max = max(rx_packet_max, 128);
1925         priv->cpts = devm_kzalloc(&pdev->dev, sizeof(struct cpts), GFP_KERNEL);
1926         priv->irq_enabled = true;
1927         if (!priv->cpts) {
1928                 pr_err("error allocating cpts\n");
1929                 goto clean_ndev_ret;
1930         }
1931
1932         /*
1933          * This may be required here for child devices.
1934          */
1935         pm_runtime_enable(&pdev->dev);
1936
1937         /* Select default pin state */
1938         pinctrl_pm_select_default_state(&pdev->dev);
1939
1940         if (cpsw_probe_dt(&priv->data, pdev)) {
1941                 pr_err("cpsw: platform data missing\n");
1942                 ret = -ENODEV;
1943                 goto clean_runtime_disable_ret;
1944         }
1945         data = &priv->data;
1946
1947         if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
1948                 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
1949                 pr_info("Detected MACID = %pM\n", priv->mac_addr);
1950         } else {
1951                 eth_random_addr(priv->mac_addr);
1952                 pr_info("Random MACID = %pM\n", priv->mac_addr);
1953         }
1954
1955         memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
1956
1957         priv->slaves = devm_kzalloc(&pdev->dev,
1958                                     sizeof(struct cpsw_slave) * data->slaves,
1959                                     GFP_KERNEL);
1960         if (!priv->slaves) {
1961                 ret = -ENOMEM;
1962                 goto clean_runtime_disable_ret;
1963         }
1964         for (i = 0; i < data->slaves; i++)
1965                 priv->slaves[i].slave_num = i;
1966
1967         priv->slaves[0].ndev = ndev;
1968         priv->emac_port = 0;
1969
1970         priv->clk = devm_clk_get(&pdev->dev, "fck");
1971         if (IS_ERR(priv->clk)) {
1972                 dev_err(priv->dev, "fck is not found\n");
1973                 ret = -ENODEV;
1974                 goto clean_runtime_disable_ret;
1975         }
1976         priv->coal_intvl = 0;
1977         priv->bus_freq_mhz = clk_get_rate(priv->clk) / 1000000;
1978
1979         ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1980         ss_regs = devm_ioremap_resource(&pdev->dev, ss_res);
1981         if (IS_ERR(ss_regs)) {
1982                 ret = PTR_ERR(ss_regs);
1983                 goto clean_runtime_disable_ret;
1984         }
1985         priv->regs = ss_regs;
1986         priv->version = __raw_readl(&priv->regs->id_ver);
1987         priv->host_port = HOST_PORT_NUM;
1988
1989         res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
1990         priv->wr_regs = devm_ioremap_resource(&pdev->dev, res);
1991         if (IS_ERR(priv->wr_regs)) {
1992                 ret = PTR_ERR(priv->wr_regs);
1993                 goto clean_runtime_disable_ret;
1994         }
1995
1996         memset(&dma_params, 0, sizeof(dma_params));
1997         memset(&ale_params, 0, sizeof(ale_params));
1998
1999         switch (priv->version) {
2000         case CPSW_VERSION_1:
2001                 priv->host_port_regs = ss_regs + CPSW1_HOST_PORT_OFFSET;
2002                 priv->cpts->reg      = ss_regs + CPSW1_CPTS_OFFSET;
2003                 priv->hw_stats       = ss_regs + CPSW1_HW_STATS;
2004                 dma_params.dmaregs   = ss_regs + CPSW1_CPDMA_OFFSET;
2005                 dma_params.txhdp     = ss_regs + CPSW1_STATERAM_OFFSET;
2006                 ale_params.ale_regs  = ss_regs + CPSW1_ALE_OFFSET;
2007                 slave_offset         = CPSW1_SLAVE_OFFSET;
2008                 slave_size           = CPSW1_SLAVE_SIZE;
2009                 sliver_offset        = CPSW1_SLIVER_OFFSET;
2010                 dma_params.desc_mem_phys = 0;
2011                 break;
2012         case CPSW_VERSION_2:
2013         case CPSW_VERSION_3:
2014         case CPSW_VERSION_4:
2015                 priv->host_port_regs = ss_regs + CPSW2_HOST_PORT_OFFSET;
2016                 priv->cpts->reg      = ss_regs + CPSW2_CPTS_OFFSET;
2017                 priv->hw_stats       = ss_regs + CPSW2_HW_STATS;
2018                 dma_params.dmaregs   = ss_regs + CPSW2_CPDMA_OFFSET;
2019                 dma_params.txhdp     = ss_regs + CPSW2_STATERAM_OFFSET;
2020                 ale_params.ale_regs  = ss_regs + CPSW2_ALE_OFFSET;
2021                 slave_offset         = CPSW2_SLAVE_OFFSET;
2022                 slave_size           = CPSW2_SLAVE_SIZE;
2023                 sliver_offset        = CPSW2_SLIVER_OFFSET;
2024                 dma_params.desc_mem_phys =
2025                         (u32 __force) ss_res->start + CPSW2_BD_OFFSET;
2026                 break;
2027         default:
2028                 dev_err(priv->dev, "unknown version 0x%08x\n", priv->version);
2029                 ret = -ENODEV;
2030                 goto clean_runtime_disable_ret;
2031         }
2032         for (i = 0; i < priv->data.slaves; i++) {
2033                 struct cpsw_slave *slave = &priv->slaves[i];
2034                 cpsw_slave_init(slave, priv, slave_offset, sliver_offset);
2035                 slave_offset  += slave_size;
2036                 sliver_offset += SLIVER_SIZE;
2037         }
2038
2039         dma_params.dev          = &pdev->dev;
2040         dma_params.rxthresh     = dma_params.dmaregs + CPDMA_RXTHRESH;
2041         dma_params.rxfree       = dma_params.dmaregs + CPDMA_RXFREE;
2042         dma_params.rxhdp        = dma_params.txhdp + CPDMA_RXHDP;
2043         dma_params.txcp         = dma_params.txhdp + CPDMA_TXCP;
2044         dma_params.rxcp         = dma_params.txhdp + CPDMA_RXCP;
2045
2046         dma_params.num_chan             = data->channels;
2047         dma_params.has_soft_reset       = true;
2048         dma_params.min_packet_size      = CPSW_MIN_PACKET_SIZE;
2049         dma_params.desc_mem_size        = data->bd_ram_size;
2050         dma_params.desc_align           = 16;
2051         dma_params.has_ext_regs         = true;
2052         dma_params.desc_hw_addr         = dma_params.desc_mem_phys;
2053
2054         priv->dma = cpdma_ctlr_create(&dma_params);
2055         if (!priv->dma) {
2056                 dev_err(priv->dev, "error initializing dma\n");
2057                 ret = -ENOMEM;
2058                 goto clean_runtime_disable_ret;
2059         }
2060
2061         priv->txch = cpdma_chan_create(priv->dma, tx_chan_num(0),
2062                                        cpsw_tx_handler);
2063         priv->rxch = cpdma_chan_create(priv->dma, rx_chan_num(0),
2064                                        cpsw_rx_handler);
2065
2066         if (WARN_ON(!priv->txch || !priv->rxch)) {
2067                 dev_err(priv->dev, "error initializing dma channels\n");
2068                 ret = -ENOMEM;
2069                 goto clean_dma_ret;
2070         }
2071
2072         ale_params.dev                  = &ndev->dev;
2073         ale_params.ale_ageout           = ale_ageout;
2074         ale_params.ale_entries          = data->ale_entries;
2075         ale_params.ale_ports            = data->slaves;
2076
2077         priv->ale = cpsw_ale_create(&ale_params);
2078         if (!priv->ale) {
2079                 dev_err(priv->dev, "error initializing ale engine\n");
2080                 ret = -ENODEV;
2081                 goto clean_dma_ret;
2082         }
2083
2084         ndev->irq = platform_get_irq(pdev, 0);
2085         if (ndev->irq < 0) {
2086                 dev_err(priv->dev, "error getting irq resource\n");
2087                 ret = -ENOENT;
2088                 goto clean_ale_ret;
2089         }
2090
2091         while ((res = platform_get_resource(priv->pdev, IORESOURCE_IRQ, k))) {
2092                 for (i = res->start; i <= res->end; i++) {
2093                         if (devm_request_irq(&pdev->dev, i, cpsw_interrupt, 0,
2094                                              dev_name(priv->dev), priv)) {
2095                                 dev_err(priv->dev, "error attaching irq\n");
2096                                 goto clean_ale_ret;
2097                         }
2098                         priv->irqs_table[k] = i;
2099                         priv->num_irqs = k + 1;
2100                 }
2101                 k++;
2102         }
2103
2104         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2105
2106         ndev->netdev_ops = &cpsw_netdev_ops;
2107         SET_ETHTOOL_OPS(ndev, &cpsw_ethtool_ops);
2108         netif_napi_add(ndev, &priv->napi, cpsw_poll, CPSW_POLL_WEIGHT);
2109
2110         /* register the network device */
2111         SET_NETDEV_DEV(ndev, &pdev->dev);
2112         ret = register_netdev(ndev);
2113         if (ret) {
2114                 dev_err(priv->dev, "error registering net device\n");
2115                 ret = -ENODEV;
2116                 goto clean_ale_ret;
2117         }
2118
2119         if (cpts_register(&pdev->dev, priv->cpts,
2120                           data->cpts_clock_mult, data->cpts_clock_shift))
2121                 dev_err(priv->dev, "error registering cpts device\n");
2122
2123         cpsw_notice(priv, probe, "initialized device (regs %x, irq %d)\n",
2124                     ss_res->start, ndev->irq);
2125
2126         if (priv->data.dual_emac) {
2127                 ret = cpsw_probe_dual_emac(pdev, priv);
2128                 if (ret) {
2129                         cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
2130                         goto clean_ale_ret;
2131                 }
2132         }
2133
2134         return 0;
2135
2136 clean_ale_ret:
2137         cpsw_ale_destroy(priv->ale);
2138 clean_dma_ret:
2139         cpdma_chan_destroy(priv->txch);
2140         cpdma_chan_destroy(priv->rxch);
2141         cpdma_ctlr_destroy(priv->dma);
2142 clean_runtime_disable_ret:
2143         pm_runtime_disable(&pdev->dev);
2144 clean_ndev_ret:
2145         free_netdev(priv->ndev);
2146         return ret;
2147 }
2148
2149 static int cpsw_remove(struct platform_device *pdev)
2150 {
2151         struct net_device *ndev = platform_get_drvdata(pdev);
2152         struct cpsw_priv *priv = netdev_priv(ndev);
2153
2154         if (priv->data.dual_emac)
2155                 unregister_netdev(cpsw_get_slave_ndev(priv, 1));
2156         unregister_netdev(ndev);
2157
2158         cpts_unregister(priv->cpts);
2159
2160         cpsw_ale_destroy(priv->ale);
2161         cpdma_chan_destroy(priv->txch);
2162         cpdma_chan_destroy(priv->rxch);
2163         cpdma_ctlr_destroy(priv->dma);
2164         pm_runtime_disable(&pdev->dev);
2165         if (priv->data.dual_emac)
2166                 free_netdev(cpsw_get_slave_ndev(priv, 1));
2167         free_netdev(ndev);
2168         return 0;
2169 }
2170
2171 static int cpsw_suspend(struct device *dev)
2172 {
2173         struct platform_device  *pdev = to_platform_device(dev);
2174         struct net_device       *ndev = platform_get_drvdata(pdev);
2175         struct cpsw_priv        *priv = netdev_priv(ndev);
2176
2177         if (netif_running(ndev))
2178                 cpsw_ndo_stop(ndev);
2179
2180         for_each_slave(priv, soft_reset_slave);
2181
2182         pm_runtime_put_sync(&pdev->dev);
2183
2184         /* Select sleep pin state */
2185         pinctrl_pm_select_sleep_state(&pdev->dev);
2186
2187         return 0;
2188 }
2189
2190 static int cpsw_resume(struct device *dev)
2191 {
2192         struct platform_device  *pdev = to_platform_device(dev);
2193         struct net_device       *ndev = platform_get_drvdata(pdev);
2194
2195         pm_runtime_get_sync(&pdev->dev);
2196
2197         /* Select default pin state */
2198         pinctrl_pm_select_default_state(&pdev->dev);
2199
2200         if (netif_running(ndev))
2201                 cpsw_ndo_open(ndev);
2202         return 0;
2203 }
2204
2205 static const struct dev_pm_ops cpsw_pm_ops = {
2206         .suspend        = cpsw_suspend,
2207         .resume         = cpsw_resume,
2208 };
2209
2210 static const struct of_device_id cpsw_of_mtable[] = {
2211         { .compatible = "ti,cpsw", },
2212         { /* sentinel */ },
2213 };
2214 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
2215
2216 static struct platform_driver cpsw_driver = {
2217         .driver = {
2218                 .name    = "cpsw",
2219                 .owner   = THIS_MODULE,
2220                 .pm      = &cpsw_pm_ops,
2221                 .of_match_table = cpsw_of_mtable,
2222         },
2223         .probe = cpsw_probe,
2224         .remove = cpsw_remove,
2225 };
2226
2227 static int __init cpsw_init(void)
2228 {
2229         return platform_driver_register(&cpsw_driver);
2230 }
2231 late_initcall(cpsw_init);
2232
2233 static void __exit cpsw_exit(void)
2234 {
2235         platform_driver_unregister(&cpsw_driver);
2236 }
2237 module_exit(cpsw_exit);
2238
2239 MODULE_LICENSE("GPL");
2240 MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
2241 MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
2242 MODULE_DESCRIPTION("TI CPSW Ethernet driver");