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         int                             rx_packet_max;
 382         int                             host_port;
 383         struct clk                      *clk;
 384         u8                              mac_addr[ETH_ALEN];
 385         struct cpsw_slave               *slaves;
 386         struct cpdma_ctlr               *dma;
 387         struct cpdma_chan               *txch, *rxch;
 388         struct cpsw_ale                 *ale;
 389         /* snapshot of IRQ numbers */
 390         u32 irqs_table[4];
 391         u32 num_irqs;
 392         bool irq_enabled;
 393         struct cpts *cpts;
 394         u32 emac_port;
 395 };
 396
 397 struct cpsw_stats {
 398         char stat_string[ETH_GSTRING_LEN];
 399         int type;
 400         int sizeof_stat;
 401         int stat_offset;
 402 };
 403
 404 enum {
 405         CPSW_STATS,
 406         CPDMA_RX_STATS,
 407         CPDMA_TX_STATS,
 408 };
 409
 410 #define CPSW_STAT(m)            CPSW_STATS,                             \
 411                                 sizeof(((struct cpsw_hw_stats *)0)->m), \
 412                                 offsetof(struct cpsw_hw_stats, m)
 413 #define CPDMA_RX_STAT(m)        CPDMA_RX_STATS,                            \
 414                                 sizeof(((struct cpdma_chan_stats *)0)->m), \
 415                                 offsetof(struct cpdma_chan_stats, m)
 416 #define CPDMA_TX_STAT(m)        CPDMA_TX_STATS,                            \
 417                                 sizeof(((struct cpdma_chan_stats *)0)->m), \
 418                                 offsetof(struct cpdma_chan_stats, m)
 419
 420 static const struct cpsw_stats cpsw_gstrings_stats[] = {
 421         { "Good Rx Frames", CPSW_STAT(rxgoodframes) },
 422         { "Broadcast Rx Frames", CPSW_STAT(rxbroadcastframes) },
 423         { "Multicast Rx Frames", CPSW_STAT(rxmulticastframes) },
 424         { "Pause Rx Frames", CPSW_STAT(rxpauseframes) },
 425         { "Rx CRC Errors", CPSW_STAT(rxcrcerrors) },
 426         { "Rx Align/Code Errors", CPSW_STAT(rxaligncodeerrors) },
 427         { "Oversize Rx Frames", CPSW_STAT(rxoversizedframes) },
 428         { "Rx Jabbers", CPSW_STAT(rxjabberframes) },
 429         { "Undersize (Short) Rx Frames", CPSW_STAT(rxundersizedframes) },
 430         { "Rx Fragments", CPSW_STAT(rxfragments) },
 431         { "Rx Octets", CPSW_STAT(rxoctets) },
 432         { "Good Tx Frames", CPSW_STAT(txgoodframes) },
 433         { "Broadcast Tx Frames", CPSW_STAT(txbroadcastframes) },
 434         { "Multicast Tx Frames", CPSW_STAT(txmulticastframes) },
 435         { "Pause Tx Frames", CPSW_STAT(txpauseframes) },
 436         { "Deferred Tx Frames", CPSW_STAT(txdeferredframes) },
 437         { "Collisions", CPSW_STAT(txcollisionframes) },
 438         { "Single Collision Tx Frames", CPSW_STAT(txsinglecollframes) },
 439         { "Multiple Collision Tx Frames", CPSW_STAT(txmultcollframes) },
 440         { "Excessive Collisions", CPSW_STAT(txexcessivecollisions) },
 441         { "Late Collisions", CPSW_STAT(txlatecollisions) },
 442         { "Tx Underrun", CPSW_STAT(txunderrun) },
 443         { "Carrier Sense Errors", CPSW_STAT(txcarriersenseerrors) },
 444         { "Tx Octets", CPSW_STAT(txoctets) },
 445         { "Rx + Tx 64 Octet Frames", CPSW_STAT(octetframes64) },
 446         { "Rx + Tx 65-127 Octet Frames", CPSW_STAT(octetframes65t127) },
 447         { "Rx + Tx 128-255 Octet Frames", CPSW_STAT(octetframes128t255) },
 448         { "Rx + Tx 256-511 Octet Frames", CPSW_STAT(octetframes256t511) },
 449         { "Rx + Tx 512-1023 Octet Frames", CPSW_STAT(octetframes512t1023) },
 450         { "Rx + Tx 1024-Up Octet Frames", CPSW_STAT(octetframes1024tup) },
 451         { "Net Octets", CPSW_STAT(netoctets) },
 452         { "Rx Start of Frame Overruns", CPSW_STAT(rxsofoverruns) },
 453         { "Rx Middle of Frame Overruns", CPSW_STAT(rxmofoverruns) },
 454         { "Rx DMA Overruns", CPSW_STAT(rxdmaoverruns) },
 455         { "Rx DMA chan: head_enqueue", CPDMA_RX_STAT(head_enqueue) },
 456         { "Rx DMA chan: tail_enqueue", CPDMA_RX_STAT(tail_enqueue) },
 457         { "Rx DMA chan: pad_enqueue", CPDMA_RX_STAT(pad_enqueue) },
 458         { "Rx DMA chan: misqueued", CPDMA_RX_STAT(misqueued) },
 459         { "Rx DMA chan: desc_alloc_fail", CPDMA_RX_STAT(desc_alloc_fail) },
 460         { "Rx DMA chan: pad_alloc_fail", CPDMA_RX_STAT(pad_alloc_fail) },
 461         { "Rx DMA chan: runt_receive_buf", CPDMA_RX_STAT(runt_receive_buff) },
 462         { "Rx DMA chan: runt_transmit_buf", CPDMA_RX_STAT(runt_transmit_buff) },
 463         { "Rx DMA chan: empty_dequeue", CPDMA_RX_STAT(empty_dequeue) },
 464         { "Rx DMA chan: busy_dequeue", CPDMA_RX_STAT(busy_dequeue) },
 465         { "Rx DMA chan: good_dequeue", CPDMA_RX_STAT(good_dequeue) },
 466         { "Rx DMA chan: requeue", CPDMA_RX_STAT(requeue) },
 467         { "Rx DMA chan: teardown_dequeue", CPDMA_RX_STAT(teardown_dequeue) },
 468         { "Tx DMA chan: head_enqueue", CPDMA_TX_STAT(head_enqueue) },
 469         { "Tx DMA chan: tail_enqueue", CPDMA_TX_STAT(tail_enqueue) },
 470         { "Tx DMA chan: pad_enqueue", CPDMA_TX_STAT(pad_enqueue) },
 471         { "Tx DMA chan: misqueued", CPDMA_TX_STAT(misqueued) },
 472         { "Tx DMA chan: desc_alloc_fail", CPDMA_TX_STAT(desc_alloc_fail) },
 473         { "Tx DMA chan: pad_alloc_fail", CPDMA_TX_STAT(pad_alloc_fail) },
 474         { "Tx DMA chan: runt_receive_buf", CPDMA_TX_STAT(runt_receive_buff) },
 475         { "Tx DMA chan: runt_transmit_buf", CPDMA_TX_STAT(runt_transmit_buff) },
 476         { "Tx DMA chan: empty_dequeue", CPDMA_TX_STAT(empty_dequeue) },
 477         { "Tx DMA chan: busy_dequeue", CPDMA_TX_STAT(busy_dequeue) },
 478         { "Tx DMA chan: good_dequeue", CPDMA_TX_STAT(good_dequeue) },
 479         { "Tx DMA chan: requeue", CPDMA_TX_STAT(requeue) },
 480         { "Tx DMA chan: teardown_dequeue", CPDMA_TX_STAT(teardown_dequeue) },
 481 };
 482
 483 #define CPSW_STATS_LEN  ARRAY_SIZE(cpsw_gstrings_stats)
 484
 485 #define napi_to_priv(napi)      container_of(napi, struct cpsw_priv, napi)
 486 #define for_each_slave(priv, func, arg...)                              \
 487         do {                                                            \
 488                 struct cpsw_slave *slave;                               \
 489                 int n;                                                  \
 490                 if (priv->data.dual_emac)                               \
 491                         (func)((priv)->slaves + priv->emac_port, ##arg);\
 492                 else                                                    \
 493                         for (n = (priv)->data.slaves,                   \
 494                                         slave = (priv)->slaves;         \
 495                                         n; n--)                         \
 496                                 (func)(slave++, ##arg);                 \
 497         } while (0)
 498 #define cpsw_get_slave_ndev(priv, __slave_no__)                         \
 499         (priv->slaves[__slave_no__].ndev)
 500 #define cpsw_get_slave_priv(priv, __slave_no__)                         \
 501         ((priv->slaves[__slave_no__].ndev) ?                            \
 502                 netdev_priv(priv->slaves[__slave_no__].ndev) : NULL)    \
 503
 504 #define cpsw_dual_emac_src_port_detect(status, priv, ndev, skb)         \
 505         do {                                                            \
 506                 if (!priv->data.dual_emac)                              \
 507                         break;                                          \
 508                 if (CPDMA_RX_SOURCE_PORT(status) == 1) {                \
 509                         ndev = cpsw_get_slave_ndev(priv, 0);            \
 510                         priv = netdev_priv(ndev);                       \
 511                         skb->dev = ndev;                                \
 512                 } else if (CPDMA_RX_SOURCE_PORT(status) == 2) {         \
 513                         ndev = cpsw_get_slave_ndev(priv, 1);            \
 514                         priv = netdev_priv(ndev);                       \
 515                         skb->dev = ndev;                                \
 516                 }                                                       \
 517         } while (0)
 518 #define cpsw_add_mcast(priv, addr)                                      \
 519         do {                                                            \
 520                 if (priv->data.dual_emac) {                             \
 521                         struct cpsw_slave *slave = priv->slaves +       \
 522                                                 priv->emac_port;        \
 523                         int slave_port = cpsw_get_slave_port(priv,      \
 524                                                 slave->slave_num);      \
 525                         cpsw_ale_add_mcast(priv->ale, addr,             \
 526                                 1 << slave_port | 1 << priv->host_port, \
 527                                 ALE_VLAN, slave->port_vlan, 0);         \
 528                 } else {                                                \
 529                         cpsw_ale_add_mcast(priv->ale, addr,             \
 530                                 ALE_ALL_PORTS << priv->host_port,       \
 531                                 0, 0, 0);                               \
 532                 }                                                       \
 533         } while (0)
 534
 535 static inline int cpsw_get_slave_port(struct cpsw_priv *priv, u32 slave_num)
 536 {
 537         if (priv->host_port == 0)
 538                 return slave_num + 1;
 539         else
 540                 return slave_num;
 541 }
 542
 543 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
 544 {
 545         struct cpsw_priv *priv = netdev_priv(ndev);
 546         struct cpsw_ale *ale = priv->ale;
 547         int i;
 548
 549         if (priv->data.dual_emac) {
 550                 bool flag = false;
 551
 552                 /* Enabling promiscuous mode for one interface will be
 553                  * common for both the interface as the interface shares
 554                  * the same hardware resource.
 555                  */
 556                 for (i = 0; i < priv->data.slaves; i++)
 557                         if (priv->slaves[i].ndev->flags & IFF_PROMISC)
 558                                 flag = true;
 559
 560                 if (!enable && flag) {
 561                         enable = true;
 562                         dev_err(&ndev->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
 563                 }
 564
 565                 if (enable) {
 566                         /* Enable Bypass */
 567                         cpsw_ale_control_set(ale, 0, ALE_BYPASS, 1);
 568
 569                         dev_dbg(&ndev->dev, "promiscuity enabled\n");
 570                 } else {
 571                         /* Disable Bypass */
 572                         cpsw_ale_control_set(ale, 0, ALE_BYPASS, 0);
 573                         dev_dbg(&ndev->dev, "promiscuity disabled\n");
 574                 }
 575         } else {
 576                 if (enable) {
 577                         unsigned long timeout = jiffies + HZ;
 578
 579                         /* Disable Learn for all ports */
 580                         for (i = 0; i < priv->data.slaves; i++) {
 581                                 cpsw_ale_control_set(ale, i,
 582                                                      ALE_PORT_NOLEARN, 1);
 583                                 cpsw_ale_control_set(ale, i,
 584                                                      ALE_PORT_NO_SA_UPDATE, 1);
 585                         }
 586
 587                         /* Clear All Untouched entries */
 588                         cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
 589                         do {
 590                                 cpu_relax();
 591                                 if (cpsw_ale_control_get(ale, 0, ALE_AGEOUT))
 592                                         break;
 593                         } while (time_after(timeout, jiffies));
 594                         cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
 595
 596                         /* Clear all mcast from ALE */
 597                         cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS <<
 598                                                  priv->host_port);
 599
 600                         /* Flood All Unicast Packets to Host port */
 601                         cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1);
 602                         dev_dbg(&ndev->dev, "promiscuity enabled\n");
 603                 } else {
 604                         /* Flood All Unicast Packets to Host port */
 605                         cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);
 606
 607                         /* Enable Learn for all ports */
 608                         for (i = 0; i < priv->data.slaves; i++) {
 609                                 cpsw_ale_control_set(ale, i,
 610                                                      ALE_PORT_NOLEARN, 0);
 611                                 cpsw_ale_control_set(ale, i,
 612                                                      ALE_PORT_NO_SA_UPDATE, 0);
 613                         }
 614                         dev_dbg(&ndev->dev, "promiscuity disabled\n");
 615                 }
 616         }
 617 }
 618
 619 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
 620 {
 621         struct cpsw_priv *priv = netdev_priv(ndev);
 622
 623         if (ndev->flags & IFF_PROMISC) {
 624                 /* Enable promiscuous mode */
 625                 cpsw_set_promiscious(ndev, true);
 626                 return;
 627         } else {
 628                 /* Disable promiscuous mode */
 629                 cpsw_set_promiscious(ndev, false);
 630         }
 631
 632         /* Clear all mcast from ALE */
 633         cpsw_ale_flush_multicast(priv->ale, ALE_ALL_PORTS << priv->host_port);
 634
 635         if (!netdev_mc_empty(ndev)) {
 636                 struct netdev_hw_addr *ha;
 637
 638                 /* program multicast address list into ALE register */
 639                 netdev_for_each_mc_addr(ha, ndev) {
 640                         cpsw_add_mcast(priv, (u8 *)ha->addr);
 641                 }
 642         }
 643 }
 644
 645 static void cpsw_intr_enable(struct cpsw_priv *priv)
 646 {
 647         __raw_writel(0xFF, &priv->wr_regs->tx_en);
 648         __raw_writel(0xFF, &priv->wr_regs->rx_en);
 649
 650         cpdma_ctlr_int_ctrl(priv->dma, true);
 651         return;
 652 }
 653
 654 static void cpsw_intr_disable(struct cpsw_priv *priv)
 655 {
 656         __raw_writel(0, &priv->wr_regs->tx_en);
 657         __raw_writel(0, &priv->wr_regs->rx_en);
 658
 659         cpdma_ctlr_int_ctrl(priv->dma, false);
 660         return;
 661 }
 662
 663 static void cpsw_tx_handler(void *token, int len, int status)
 664 {
 665         struct sk_buff          *skb = token;
 666         struct net_device       *ndev = skb->dev;
 667         struct cpsw_priv        *priv = netdev_priv(ndev);
 668
 669         /* Check whether the queue is stopped due to stalled tx dma, if the
 670          * queue is stopped then start the queue as we have free desc for tx
 671          */
 672         if (unlikely(netif_queue_stopped(ndev)))
 673                 netif_wake_queue(ndev);
 674         cpts_tx_timestamp(priv->cpts, skb);
 675         ndev->stats.tx_packets++;
 676         ndev->stats.tx_bytes += len;
 677         dev_kfree_skb_any(skb);
 678 }
 679
 680 static void cpsw_rx_handler(void *token, int len, int status)
 681 {
 682         struct sk_buff          *skb = token;
 683         struct sk_buff          *new_skb;
 684         struct net_device       *ndev = skb->dev;
 685         struct cpsw_priv        *priv = netdev_priv(ndev);
 686         int                     ret = 0;
 687
 688         cpsw_dual_emac_src_port_detect(status, priv, ndev, skb);
 689
 690         if (unlikely(status < 0)) {
 691                 /* the interface is going down, skbs are purged */
 692                 dev_kfree_skb_any(skb);
 693                 return;
 694         }
 695
 696         new_skb = netdev_alloc_skb_ip_align(ndev, priv->rx_packet_max);
 697         if (new_skb) {
 698                 skb_put(skb, len);
 699                 cpts_rx_timestamp(priv->cpts, skb);
 700                 skb->protocol = eth_type_trans(skb, ndev);
 701                 netif_receive_skb(skb);
 702                 ndev->stats.rx_bytes += len;
 703                 ndev->stats.rx_packets++;
 704         } else {
 705                 ndev->stats.rx_dropped++;
 706                 new_skb = skb;
 707         }
 708
 709         ret = cpdma_chan_submit(priv->rxch, new_skb, new_skb->data,
 710                         skb_tailroom(new_skb), 0);
 711         if (WARN_ON(ret < 0))
 712                 dev_kfree_skb_any(new_skb);
 713 }
 714
 715 static irqreturn_t cpsw_interrupt(int irq, void *dev_id)
 716 {
 717         struct cpsw_priv *priv = dev_id;
 718
 719         cpsw_intr_disable(priv);
 720         if (priv->irq_enabled == true) {
 721                 cpsw_disable_irq(priv);
 722                 priv->irq_enabled = false;
 723         }
 724
 725         if (netif_running(priv->ndev)) {
 726                 napi_schedule(&priv->napi);
 727                 return IRQ_HANDLED;
 728         }
 729
 730         priv = cpsw_get_slave_priv(priv, 1);
 731         if (!priv)
 732                 return IRQ_NONE;
 733
 734         if (netif_running(priv->ndev)) {
 735                 napi_schedule(&priv->napi);
 736                 return IRQ_HANDLED;
 737         }
 738         return IRQ_NONE;
 739 }
 740
 741 static int cpsw_poll(struct napi_struct *napi, int budget)
 742 {
 743         struct cpsw_priv        *priv = napi_to_priv(napi);
 744         int                     num_tx, num_rx;
 745
 746         num_tx = cpdma_chan_process(priv->txch, 128);
 747         if (num_tx)
 748                 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
 749
 750         num_rx = cpdma_chan_process(priv->rxch, budget);
 751         if (num_rx < budget) {
 752                 struct cpsw_priv *prim_cpsw;
 753
 754                 napi_complete(napi);
 755                 cpsw_intr_enable(priv);
 756                 cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
 757                 prim_cpsw = cpsw_get_slave_priv(priv, 0);
 758                 if (prim_cpsw->irq_enabled == false) {
 759                         prim_cpsw->irq_enabled = true;
 760                         cpsw_enable_irq(priv);
 761                 }
 762         }
 763
 764         if (num_rx || num_tx)
 765                 cpsw_dbg(priv, intr, "poll %d rx, %d tx pkts\n",
 766                          num_rx, num_tx);
 767
 768         return num_rx;
 769 }
 770
 771 static inline void soft_reset(const char *module, void __iomem *reg)
 772 {
 773         unsigned long timeout = jiffies + HZ;
 774
 775         __raw_writel(1, reg);
 776         do {
 777                 cpu_relax();
 778         } while ((__raw_readl(reg) & 1) && time_after(timeout, jiffies));
 779
 780         WARN(__raw_readl(reg) & 1, "failed to soft-reset %s\n", module);
 781 }
 782
 783 #define mac_hi(mac)     (((mac)[0] << 0) | ((mac)[1] << 8) |    \
 784                          ((mac)[2] << 16) | ((mac)[3] << 24))
 785 #define mac_lo(mac)     (((mac)[4] << 0) | ((mac)[5] << 8))
 786
 787 static void cpsw_set_slave_mac(struct cpsw_slave *slave,
 788                                struct cpsw_priv *priv)
 789 {
 790         slave_write(slave, mac_hi(priv->mac_addr), SA_HI);
 791         slave_write(slave, mac_lo(priv->mac_addr), SA_LO);
 792 }
 793
 794 static void _cpsw_adjust_link(struct cpsw_slave *slave,
 795                               struct cpsw_priv *priv, bool *link)
 796 {
 797         struct phy_device       *phy = slave->phy;
 798         u32                     mac_control = 0;
 799         u32                     slave_port;
 800
 801         if (!phy)
 802                 return;
 803
 804         slave_port = cpsw_get_slave_port(priv, slave->slave_num);
 805
 806         if (phy->link) {
 807                 mac_control = priv->data.mac_control;
 808
 809                 /* enable forwarding */
 810                 cpsw_ale_control_set(priv->ale, slave_port,
 811                                      ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 812
 813                 if (phy->speed == 1000)
 814                         mac_control |= BIT(7);  /* GIGABITEN    */
 815                 if (phy->duplex)
 816                         mac_control |= BIT(0);  /* FULLDUPLEXEN */
 817
 818                 /* set speed_in input in case RMII mode is used in 100Mbps */
 819                 if (phy->speed == 100)
 820                         mac_control |= BIT(15);
 821                 else if (phy->speed == 10)
 822                         mac_control |= BIT(18); /* In Band mode */
 823
 824                 *link = true;
 825         } else {
 826                 mac_control = 0;
 827                 /* disable forwarding */
 828                 cpsw_ale_control_set(priv->ale, slave_port,
 829                                      ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
 830         }
 831
 832         if (mac_control != slave->mac_control) {
 833                 phy_print_status(phy);
 834                 __raw_writel(mac_control, &slave->sliver->mac_control);
 835         }
 836
 837         slave->mac_control = mac_control;
 838 }
 839
 840 static void cpsw_adjust_link(struct net_device *ndev)
 841 {
 842         struct cpsw_priv        *priv = netdev_priv(ndev);
 843         bool                    link = false;
 844
 845         for_each_slave(priv, _cpsw_adjust_link, priv, &link);
 846
 847         if (link) {
 848                 netif_carrier_on(ndev);
 849                 if (netif_running(ndev))
 850                         netif_wake_queue(ndev);
 851         } else {
 852                 netif_carrier_off(ndev);
 853                 netif_stop_queue(ndev);
 854         }
 855 }
 856
 857 static int cpsw_get_coalesce(struct net_device *ndev,
 858                                 struct ethtool_coalesce *coal)
 859 {
 860         struct cpsw_priv *priv = netdev_priv(ndev);
 861
 862         coal->rx_coalesce_usecs = priv->coal_intvl;
 863         return 0;
 864 }
 865
 866 static int cpsw_set_coalesce(struct net_device *ndev,
 867                                 struct ethtool_coalesce *coal)
 868 {
 869         struct cpsw_priv *priv = netdev_priv(ndev);
 870         u32 int_ctrl;
 871         u32 num_interrupts = 0;
 872         u32 prescale = 0;
 873         u32 addnl_dvdr = 1;
 874         u32 coal_intvl = 0;
 875
 876         if (!coal->rx_coalesce_usecs)
 877                 return -EINVAL;
 878
 879         coal_intvl = coal->rx_coalesce_usecs;
 880
 881         int_ctrl =  readl(&priv->wr_regs->int_control);
 882         prescale = priv->bus_freq_mhz * 4;
 883
 884         if (coal_intvl < CPSW_CMINTMIN_INTVL)
 885                 coal_intvl = CPSW_CMINTMIN_INTVL;
 886
 887         if (coal_intvl > CPSW_CMINTMAX_INTVL) {
 888                 /* Interrupt pacer works with 4us Pulse, we can
 889                  * throttle further by dilating the 4us pulse.
 890                  */
 891                 addnl_dvdr = CPSW_INTPRESCALE_MASK / prescale;
 892
 893                 if (addnl_dvdr > 1) {
 894                         prescale *= addnl_dvdr;
 895                         if (coal_intvl > (CPSW_CMINTMAX_INTVL * addnl_dvdr))
 896                                 coal_intvl = (CPSW_CMINTMAX_INTVL
 897                                                 * addnl_dvdr);
 898                 } else {
 899                         addnl_dvdr = 1;
 900                         coal_intvl = CPSW_CMINTMAX_INTVL;
 901                 }
 902         }
 903
 904         num_interrupts = (1000 * addnl_dvdr) / coal_intvl;
 905         writel(num_interrupts, &priv->wr_regs->rx_imax);
 906         writel(num_interrupts, &priv->wr_regs->tx_imax);
 907
 908         int_ctrl |= CPSW_INTPACEEN;
 909         int_ctrl &= (~CPSW_INTPRESCALE_MASK);
 910         int_ctrl |= (prescale & CPSW_INTPRESCALE_MASK);
 911         writel(int_ctrl, &priv->wr_regs->int_control);
 912
 913         cpsw_notice(priv, timer, "Set coalesce to %d usecs.\n", coal_intvl);
 914         if (priv->data.dual_emac) {
 915                 int i;
 916
 917                 for (i = 0; i < priv->data.slaves; i++) {
 918                         priv = netdev_priv(priv->slaves[i].ndev);
 919                         priv->coal_intvl = coal_intvl;
 920                 }
 921         } else {
 922                 priv->coal_intvl = coal_intvl;
 923         }
 924
 925         return 0;
 926 }
 927
 928 static int cpsw_get_sset_count(struct net_device *ndev, int sset)
 929 {
 930         switch (sset) {
 931         case ETH_SS_STATS:
 932                 return CPSW_STATS_LEN;
 933         default:
 934                 return -EOPNOTSUPP;
 935         }
 936 }
 937
 938 static void cpsw_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
 939 {
 940         u8 *p = data;
 941         int i;
 942
 943         switch (stringset) {
 944         case ETH_SS_STATS:
 945                 for (i = 0; i < CPSW_STATS_LEN; i++) {
 946                         memcpy(p, cpsw_gstrings_stats[i].stat_string,
 947                                ETH_GSTRING_LEN);
 948                         p += ETH_GSTRING_LEN;
 949                 }
 950                 break;
 951         }
 952 }
 953
 954 static void cpsw_get_ethtool_stats(struct net_device *ndev,
 955                                     struct ethtool_stats *stats, u64 *data)
 956 {
 957         struct cpsw_priv *priv = netdev_priv(ndev);
 958         struct cpdma_chan_stats rx_stats;
 959         struct cpdma_chan_stats tx_stats;
 960         u32 val;
 961         u8 *p;
 962         int i;
 963
 964         /* Collect Davinci CPDMA stats for Rx and Tx Channel */
 965         cpdma_chan_get_stats(priv->rxch, &rx_stats);
 966         cpdma_chan_get_stats(priv->txch, &tx_stats);
 967
 968         for (i = 0; i < CPSW_STATS_LEN; i++) {
 969                 switch (cpsw_gstrings_stats[i].type) {
 970                 case CPSW_STATS:
 971                         val = readl(priv->hw_stats +
 972                                     cpsw_gstrings_stats[i].stat_offset);
 973                         data[i] = val;
 974                         break;
 975
 976                 case CPDMA_RX_STATS:
 977                         p = (u8 *)&rx_stats +
 978                                 cpsw_gstrings_stats[i].stat_offset;
 979                         data[i] = *(u32 *)p;
 980                         break;
 981
 982                 case CPDMA_TX_STATS:
 983                         p = (u8 *)&tx_stats +
 984                                 cpsw_gstrings_stats[i].stat_offset;
 985                         data[i] = *(u32 *)p;
 986                         break;
 987                 }
 988         }
 989 }
 990
 991 static inline int __show_stat(char *buf, int maxlen, const char *name, u32 val)
 992 {
 993         static char *leader = "........................................";
 994
 995         if (!val)
 996                 return 0;
 997         else
 998                 return snprintf(buf, maxlen, "%s %s %10d\n", name,
 999                                 leader + strlen(name), val);
1000 }
1001
1002 static int cpsw_common_res_usage_state(struct cpsw_priv *priv)
1003 {
1004         u32 i;
1005         u32 usage_count = 0;
1006
1007         if (!priv->data.dual_emac)
1008                 return 0;
1009
1010         for (i = 0; i < priv->data.slaves; i++)
1011                 if (priv->slaves[i].open_stat)
1012                         usage_count++;
1013
1014         return usage_count;
1015 }
1016
1017 static inline int cpsw_tx_packet_submit(struct net_device *ndev,
1018                         struct cpsw_priv *priv, struct sk_buff *skb)
1019 {
1020         if (!priv->data.dual_emac)
1021                 return cpdma_chan_submit(priv->txch, skb, skb->data,
1022                                   skb->len, 0);
1023
1024         if (ndev == cpsw_get_slave_ndev(priv, 0))
1025                 return cpdma_chan_submit(priv->txch, skb, skb->data,
1026                                   skb->len, 1);
1027         else
1028                 return cpdma_chan_submit(priv->txch, skb, skb->data,
1029                                   skb->len, 2);
1030 }
1031
1032 static inline void cpsw_add_dual_emac_def_ale_entries(
1033                 struct cpsw_priv *priv, struct cpsw_slave *slave,
1034                 u32 slave_port)
1035 {
1036         u32 port_mask = 1 << slave_port | 1 << priv->host_port;
1037
1038         if (priv->version == CPSW_VERSION_1)
1039                 slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
1040         else
1041                 slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
1042         cpsw_ale_add_vlan(priv->ale, slave->port_vlan, port_mask,
1043                           port_mask, port_mask, 0);
1044         cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1045                            port_mask, ALE_VLAN, slave->port_vlan, 0);
1046         cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1047                 priv->host_port, ALE_VLAN, slave->port_vlan);
1048 }
1049
1050 static void soft_reset_slave(struct cpsw_slave *slave)
1051 {
1052         char name[32];
1053
1054         snprintf(name, sizeof(name), "slave-%d", slave->slave_num);
1055         soft_reset(name, &slave->sliver->soft_reset);
1056 }
1057
1058 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
1059 {
1060         u32 slave_port;
1061
1062         soft_reset_slave(slave);
1063
1064         /* setup priority mapping */
1065         __raw_writel(RX_PRIORITY_MAPPING, &slave->sliver->rx_pri_map);
1066
1067         switch (priv->version) {
1068         case CPSW_VERSION_1:
1069                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
1070                 break;
1071         case CPSW_VERSION_2:
1072         case CPSW_VERSION_3:
1073         case CPSW_VERSION_4:
1074                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
1075                 break;
1076         }
1077
1078         /* setup max packet size, and mac address */
1079         __raw_writel(priv->rx_packet_max, &slave->sliver->rx_maxlen);
1080         cpsw_set_slave_mac(slave, priv);
1081
1082         slave->mac_control = 0; /* no link yet */
1083
1084         slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1085
1086         if (priv->data.dual_emac)
1087                 cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
1088         else
1089                 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1090                                    1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
1091
1092         slave->phy = phy_connect(priv->ndev, slave->data->phy_id,
1093                                  &cpsw_adjust_link, slave->data->phy_if);
1094         if (IS_ERR(slave->phy)) {
1095                 dev_err(priv->dev, "phy %s not found on slave %d\n",
1096                         slave->data->phy_id, slave->slave_num);
1097                 slave->phy = NULL;
1098         } else {
1099                 dev_info(priv->dev, "phy found : id is : 0x%x\n",
1100                          slave->phy->phy_id);
1101                 phy_start(slave->phy);
1102
1103                 /* Configure GMII_SEL register */
1104                 cpsw_phy_sel(&priv->pdev->dev, slave->phy->interface,
1105                              slave->slave_num);
1106         }
1107 }
1108
1109 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
1110 {
1111         const int vlan = priv->data.default_vlan;
1112         const int port = priv->host_port;
1113         u32 reg;
1114         int i;
1115
1116         reg = (priv->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
1117                CPSW2_PORT_VLAN;
1118
1119         writel(vlan, &priv->host_port_regs->port_vlan);
1120
1121         for (i = 0; i < priv->data.slaves; i++)
1122                 slave_write(priv->slaves + i, vlan, reg);
1123
1124         cpsw_ale_add_vlan(priv->ale, vlan, ALE_ALL_PORTS << port,
1125                           ALE_ALL_PORTS << port, ALE_ALL_PORTS << port,
1126                           (ALE_PORT_1 | ALE_PORT_2) << port);
1127 }
1128
1129 static void cpsw_init_host_port(struct cpsw_priv *priv)
1130 {
1131         u32 control_reg;
1132         u32 fifo_mode;
1133
1134         /* soft reset the controller and initialize ale */
1135         soft_reset("cpsw", &priv->regs->soft_reset);
1136         cpsw_ale_start(priv->ale);
1137
1138         /* switch to vlan unaware mode */
1139         cpsw_ale_control_set(priv->ale, priv->host_port, ALE_VLAN_AWARE,
1140                              CPSW_ALE_VLAN_AWARE);
1141         control_reg = readl(&priv->regs->control);
1142         control_reg |= CPSW_VLAN_AWARE;
1143         writel(control_reg, &priv->regs->control);
1144         fifo_mode = (priv->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
1145                      CPSW_FIFO_NORMAL_MODE;
1146         writel(fifo_mode, &priv->host_port_regs->tx_in_ctl);
1147
1148         /* setup host port priority mapping */
1149         __raw_writel(CPDMA_TX_PRIORITY_MAP,
1150                      &priv->host_port_regs->cpdma_tx_pri_map);
1151         __raw_writel(0, &priv->host_port_regs->cpdma_rx_chan_map);
1152
1153         cpsw_ale_control_set(priv->ale, priv->host_port,
1154                              ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
1155
1156         if (!priv->data.dual_emac) {
1157                 cpsw_ale_add_ucast(priv->ale, priv->mac_addr, priv->host_port,
1158                                    0, 0);
1159                 cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1160                                    1 << priv->host_port, 0, 0, ALE_MCAST_FWD_2);
1161         }
1162 }
1163
1164 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_priv *priv)
1165 {
1166         u32 slave_port;
1167
1168         slave_port = cpsw_get_slave_port(priv, slave->slave_num);
1169
1170         if (!slave->phy)
1171                 return;
1172         phy_stop(slave->phy);
1173         phy_disconnect(slave->phy);
1174         slave->phy = NULL;
1175         cpsw_ale_control_set(priv->ale, slave_port,
1176                              ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
1177 }
1178
1179 static int cpsw_ndo_open(struct net_device *ndev)
1180 {
1181         struct cpsw_priv *priv = netdev_priv(ndev);
1182         struct cpsw_priv *prim_cpsw;
1183         int i, ret;
1184         u32 reg;
1185
1186         if (!cpsw_common_res_usage_state(priv))
1187                 cpsw_intr_disable(priv);
1188         netif_carrier_off(ndev);
1189
1190         pm_runtime_get_sync(&priv->pdev->dev);
1191
1192         reg = priv->version;
1193
1194         dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
1195                  CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
1196                  CPSW_RTL_VERSION(reg));
1197
1198         /* initialize host and slave ports */
1199         if (!cpsw_common_res_usage_state(priv))
1200                 cpsw_init_host_port(priv);
1201         for_each_slave(priv, cpsw_slave_open, priv);
1202
1203         /* Add default VLAN */
1204         if (!priv->data.dual_emac)
1205                 cpsw_add_default_vlan(priv);
1206
1207         if (!cpsw_common_res_usage_state(priv)) {
1208                 /* setup tx dma to fixed prio and zero offset */
1209                 cpdma_control_set(priv->dma, CPDMA_TX_PRIO_FIXED, 1);
1210                 cpdma_control_set(priv->dma, CPDMA_RX_BUFFER_OFFSET, 0);
1211
1212                 /* disable priority elevation */
1213                 __raw_writel(0, &priv->regs->ptype);
1214
1215                 /* enable statistics collection only on all ports */
1216                 __raw_writel(0x7, &priv->regs->stat_port_en);
1217
1218                 if (WARN_ON(!priv->data.rx_descs))
1219                         priv->data.rx_descs = 128;
1220
1221                 for (i = 0; i < priv->data.rx_descs; i++) {
1222                         struct sk_buff *skb;
1223
1224                         ret = -ENOMEM;
1225                         skb = __netdev_alloc_skb_ip_align(priv->ndev,
1226                                         priv->rx_packet_max, GFP_KERNEL);
1227                         if (!skb)
1228                                 goto err_cleanup;
1229                         ret = cpdma_chan_submit(priv->rxch, skb, skb->data,
1230                                         skb_tailroom(skb), 0);
1231                         if (ret < 0) {
1232                                 kfree_skb(skb);
1233                                 goto err_cleanup;
1234                         }
1235                 }
1236                 /* continue even if we didn't manage to submit all
1237                  * receive descs
1238                  */
1239                 cpsw_info(priv, ifup, "submitted %d rx descriptors\n", i);
1240
1241                 if (cpts_register(&priv->pdev->dev, priv->cpts,
1242                                   priv->data.cpts_clock_mult,
1243                                   priv->data.cpts_clock_shift))
1244                         dev_err(priv->dev, "error registering cpts device\n");
1245
1246         }
1247
1248         /* Enable Interrupt pacing if configured */
1249         if (priv->coal_intvl != 0) {
1250                 struct ethtool_coalesce coal;
1251
1252                 coal.rx_coalesce_usecs = (priv->coal_intvl << 4);
1253                 cpsw_set_coalesce(ndev, &coal);
1254         }
1255
1256         prim_cpsw = cpsw_get_slave_priv(priv, 0);
1257         if (prim_cpsw->irq_enabled == false) {
1258                 if ((priv == prim_cpsw) || !netif_running(prim_cpsw->ndev)) {
1259                         prim_cpsw->irq_enabled = true;
1260                         cpsw_enable_irq(prim_cpsw);
1261                 }
1262         }
1263
1264         napi_enable(&priv->napi);
1265         cpdma_ctlr_start(priv->dma);
1266         cpsw_intr_enable(priv);
1267         cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
1268         cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
1269
1270         if (priv->data.dual_emac)
1271                 priv->slaves[priv->emac_port].open_stat = true;
1272         return 0;
1273
1274 err_cleanup:
1275         cpdma_ctlr_stop(priv->dma);
1276         for_each_slave(priv, cpsw_slave_stop, priv);
1277         pm_runtime_put_sync(&priv->pdev->dev);
1278         netif_carrier_off(priv->ndev);
1279         return ret;
1280 }
1281
1282 static int cpsw_ndo_stop(struct net_device *ndev)
1283 {
1284         struct cpsw_priv *priv = netdev_priv(ndev);
1285
1286         cpsw_info(priv, ifdown, "shutting down cpsw device\n");
1287         netif_stop_queue(priv->ndev);
1288         napi_disable(&priv->napi);
1289         netif_carrier_off(priv->ndev);
1290
1291         if (cpsw_common_res_usage_state(priv) <= 1) {
1292                 cpts_unregister(priv->cpts);
1293                 cpsw_intr_disable(priv);
1294                 cpdma_ctlr_int_ctrl(priv->dma, false);
1295                 cpdma_ctlr_stop(priv->dma);
1296                 cpsw_ale_stop(priv->ale);
1297         }
1298         for_each_slave(priv, cpsw_slave_stop, priv);
1299         pm_runtime_put_sync(&priv->pdev->dev);
1300         if (priv->data.dual_emac)
1301                 priv->slaves[priv->emac_port].open_stat = false;
1302         return 0;
1303 }
1304
1305 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
1306                                        struct net_device *ndev)
1307 {
1308         struct cpsw_priv *priv = netdev_priv(ndev);
1309         int ret;
1310
1311         ndev->trans_start = jiffies;
1312
1313         if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
1314                 cpsw_err(priv, tx_err, "packet pad failed\n");
1315                 ndev->stats.tx_dropped++;
1316                 return NETDEV_TX_OK;
1317         }
1318
1319         if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
1320                                 priv->cpts->tx_enable)
1321                 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
1322
1323         skb_tx_timestamp(skb);
1324
1325         ret = cpsw_tx_packet_submit(ndev, priv, skb);
1326         if (unlikely(ret != 0)) {
1327                 cpsw_err(priv, tx_err, "desc submit failed\n");
1328                 goto fail;
1329         }
1330
1331         /* If there is no more tx desc left free then we need to
1332          * tell the kernel to stop sending us tx frames.
1333          */
1334         if (unlikely(!cpdma_check_free_tx_desc(priv->txch)))
1335                 netif_stop_queue(ndev);
1336
1337         return NETDEV_TX_OK;
1338 fail:
1339         ndev->stats.tx_dropped++;
1340         netif_stop_queue(ndev);
1341         return NETDEV_TX_BUSY;
1342 }
1343
1344 #ifdef CONFIG_TI_CPTS
1345
1346 static void cpsw_hwtstamp_v1(struct cpsw_priv *priv)
1347 {
1348         struct cpsw_slave *slave = &priv->slaves[priv->data.active_slave];
1349         u32 ts_en, seq_id;
1350
1351         if (!priv->cpts->tx_enable && !priv->cpts->rx_enable) {
1352                 slave_write(slave, 0, CPSW1_TS_CTL);
1353                 return;
1354         }
1355
1356         seq_id = (30 << CPSW_V1_SEQ_ID_OFS_SHIFT) | ETH_P_1588;
1357         ts_en = EVENT_MSG_BITS << CPSW_V1_MSG_TYPE_OFS;
1358
1359         if (priv->cpts->tx_enable)
1360                 ts_en |= CPSW_V1_TS_TX_EN;
1361
1362         if (priv->cpts->rx_enable)
1363                 ts_en |= CPSW_V1_TS_RX_EN;
1364
1365         slave_write(slave, ts_en, CPSW1_TS_CTL);
1366         slave_write(slave, seq_id, CPSW1_TS_SEQ_LTYPE);
1367 }
1368
1369 static void cpsw_hwtstamp_v2(struct cpsw_priv *priv)
1370 {
1371         struct cpsw_slave *slave;
1372         u32 ctrl, mtype;
1373
1374         if (priv->data.dual_emac)
1375                 slave = &priv->slaves[priv->emac_port];
1376         else
1377                 slave = &priv->slaves[priv->data.active_slave];
1378
1379         ctrl = slave_read(slave, CPSW2_CONTROL);
1380         ctrl &= ~CTRL_ALL_TS_MASK;
1381
1382         if (priv->cpts->tx_enable)
1383                 ctrl |= CTRL_TX_TS_BITS;
1384
1385         if (priv->cpts->rx_enable)
1386                 ctrl |= CTRL_RX_TS_BITS;
1387
1388         mtype = (30 << TS_SEQ_ID_OFFSET_SHIFT) | EVENT_MSG_BITS;
1389
1390         slave_write(slave, mtype, CPSW2_TS_SEQ_MTYPE);
1391         slave_write(slave, ctrl, CPSW2_CONTROL);
1392         __raw_writel(ETH_P_1588, &priv->regs->ts_ltype);
1393 }
1394
1395 static int cpsw_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
1396 {
1397         struct cpsw_priv *priv = netdev_priv(dev);
1398         struct cpts *cpts = priv->cpts;
1399         struct hwtstamp_config cfg;
1400
1401         if (priv->version != CPSW_VERSION_1 &&
1402             priv->version != CPSW_VERSION_2)
1403                 return -EOPNOTSUPP;
1404
1405         if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
1406                 return -EFAULT;
1407
1408         /* reserved for future extensions */
1409         if (cfg.flags)
1410                 return -EINVAL;
1411
1412         if (cfg.tx_type != HWTSTAMP_TX_OFF && cfg.tx_type != HWTSTAMP_TX_ON)
1413                 return -ERANGE;
1414
1415         switch (cfg.rx_filter) {
1416         case HWTSTAMP_FILTER_NONE:
1417                 cpts->rx_enable = 0;
1418                 break;
1419         case HWTSTAMP_FILTER_ALL:
1420         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
1421         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
1422         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
1423                 return -ERANGE;
1424         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
1425         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
1426         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
1427         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
1428         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
1429         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
1430         case HWTSTAMP_FILTER_PTP_V2_EVENT:
1431         case HWTSTAMP_FILTER_PTP_V2_SYNC:
1432         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
1433                 cpts->rx_enable = 1;
1434                 cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
1435                 break;
1436         default:
1437                 return -ERANGE;
1438         }
1439
1440         cpts->tx_enable = cfg.tx_type == HWTSTAMP_TX_ON;
1441
1442         switch (priv->version) {
1443         case CPSW_VERSION_1:
1444                 cpsw_hwtstamp_v1(priv);
1445                 break;
1446         case CPSW_VERSION_2:
1447                 cpsw_hwtstamp_v2(priv);
1448                 break;
1449         default:
1450                 WARN_ON(1);
1451         }
1452
1453         return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1454 }
1455
1456 static int cpsw_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
1457 {
1458         struct cpsw_priv *priv = netdev_priv(dev);
1459         struct cpts *cpts = priv->cpts;
1460         struct hwtstamp_config cfg;
1461
1462         if (priv->version != CPSW_VERSION_1 &&
1463             priv->version != CPSW_VERSION_2)
1464                 return -EOPNOTSUPP;
1465
1466         cfg.flags = 0;
1467         cfg.tx_type = cpts->tx_enable ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF;
1468         cfg.rx_filter = (cpts->rx_enable ?
1469                          HWTSTAMP_FILTER_PTP_V2_EVENT : HWTSTAMP_FILTER_NONE);
1470
1471         return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1472 }
1473
1474 #endif /*CONFIG_TI_CPTS*/
1475
1476 static int cpsw_ndo_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
1477 {
1478         struct cpsw_priv *priv = netdev_priv(dev);
1479         int slave_no = cpsw_slave_index(priv);
1480
1481         if (!netif_running(dev))
1482                 return -EINVAL;
1483
1484         switch (cmd) {
1485 #ifdef CONFIG_TI_CPTS
1486         case SIOCSHWTSTAMP:
1487                 return cpsw_hwtstamp_set(dev, req);
1488         case SIOCGHWTSTAMP:
1489                 return cpsw_hwtstamp_get(dev, req);
1490 #endif
1491         }
1492
1493         if (!priv->slaves[slave_no].phy)
1494                 return -EOPNOTSUPP;
1495         return phy_mii_ioctl(priv->slaves[slave_no].phy, req, cmd);
1496 }
1497
1498 static void cpsw_ndo_tx_timeout(struct net_device *ndev)
1499 {
1500         struct cpsw_priv *priv = netdev_priv(ndev);
1501
1502         cpsw_err(priv, tx_err, "transmit timeout, restarting dma\n");
1503         ndev->stats.tx_errors++;
1504         cpsw_intr_disable(priv);
1505         cpdma_ctlr_int_ctrl(priv->dma, false);
1506         cpdma_chan_stop(priv->txch);
1507         cpdma_chan_start(priv->txch);
1508         cpdma_ctlr_int_ctrl(priv->dma, true);
1509         cpsw_intr_enable(priv);
1510         cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
1511         cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
1512
1513 }
1514
1515 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
1516 {
1517         struct cpsw_priv *priv = netdev_priv(ndev);
1518         struct sockaddr *addr = (struct sockaddr *)p;
1519         int flags = 0;
1520         u16 vid = 0;
1521
1522         if (!is_valid_ether_addr(addr->sa_data))
1523                 return -EADDRNOTAVAIL;
1524
1525         if (priv->data.dual_emac) {
1526                 vid = priv->slaves[priv->emac_port].port_vlan;
1527                 flags = ALE_VLAN;
1528         }
1529
1530         cpsw_ale_del_ucast(priv->ale, priv->mac_addr, priv->host_port,
1531                            flags, vid);
1532         cpsw_ale_add_ucast(priv->ale, addr->sa_data, priv->host_port,
1533                            flags, vid);
1534
1535         memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
1536         memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
1537         for_each_slave(priv, cpsw_set_slave_mac, priv);
1538
1539         return 0;
1540 }
1541
1542 #ifdef CONFIG_NET_POLL_CONTROLLER
1543 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1544 {
1545         struct cpsw_priv *priv = netdev_priv(ndev);
1546
1547         cpsw_intr_disable(priv);
1548         cpdma_ctlr_int_ctrl(priv->dma, false);
1549         cpsw_interrupt(ndev->irq, priv);
1550         cpdma_ctlr_int_ctrl(priv->dma, true);
1551         cpsw_intr_enable(priv);
1552         cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
1553         cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);
1554
1555 }
1556 #endif
1557
1558 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
1559                                 unsigned short vid)
1560 {
1561         int ret;
1562
1563         ret = cpsw_ale_add_vlan(priv->ale, vid,
1564                                 ALE_ALL_PORTS << priv->host_port,
1565                                 0, ALE_ALL_PORTS << priv->host_port,
1566                                 (ALE_PORT_1 | ALE_PORT_2) << priv->host_port);
1567         if (ret != 0)
1568                 return ret;
1569
1570         ret = cpsw_ale_add_ucast(priv->ale, priv->mac_addr,
1571                                  priv->host_port, ALE_VLAN, vid);
1572         if (ret != 0)
1573                 goto clean_vid;
1574
1575         ret = cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
1576                                  ALE_ALL_PORTS << priv->host_port,
1577                                  ALE_VLAN, vid, 0);
1578         if (ret != 0)
1579                 goto clean_vlan_ucast;
1580         return 0;
1581
1582 clean_vlan_ucast:
1583         cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1584                             priv->host_port, ALE_VLAN, vid);
1585 clean_vid:
1586         cpsw_ale_del_vlan(priv->ale, vid, 0);
1587         return ret;
1588 }
1589
1590 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1591                                     __be16 proto, u16 vid)
1592 {
1593         struct cpsw_priv *priv = netdev_priv(ndev);
1594
1595         if (vid == priv->data.default_vlan)
1596                 return 0;
1597
1598         dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1599         return cpsw_add_vlan_ale_entry(priv, vid);
1600 }
1601
1602 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1603                                      __be16 proto, u16 vid)
1604 {
1605         struct cpsw_priv *priv = netdev_priv(ndev);
1606         int ret;
1607
1608         if (vid == priv->data.default_vlan)
1609                 return 0;
1610
1611         dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1612         ret = cpsw_ale_del_vlan(priv->ale, vid, 0);
1613         if (ret != 0)
1614                 return ret;
1615
1616         ret = cpsw_ale_del_ucast(priv->ale, priv->mac_addr,
1617                                  priv->host_port, ALE_VLAN, vid);
1618         if (ret != 0)
1619                 return ret;
1620
1621         return cpsw_ale_del_mcast(priv->ale, priv->ndev->broadcast,
1622                                   0, ALE_VLAN, vid);
1623 }
1624
1625 static const struct net_device_ops cpsw_netdev_ops = {
1626         .ndo_open               = cpsw_ndo_open,
1627         .ndo_stop               = cpsw_ndo_stop,
1628         .ndo_start_xmit         = cpsw_ndo_start_xmit,
1629         .ndo_set_mac_address    = cpsw_ndo_set_mac_address,
1630         .ndo_do_ioctl           = cpsw_ndo_ioctl,
1631         .ndo_validate_addr      = eth_validate_addr,
1632         .ndo_change_mtu         = eth_change_mtu,
1633         .ndo_tx_timeout         = cpsw_ndo_tx_timeout,
1634         .ndo_set_rx_mode        = cpsw_ndo_set_rx_mode,
1635 #ifdef CONFIG_NET_POLL_CONTROLLER
1636         .ndo_poll_controller    = cpsw_ndo_poll_controller,
1637 #endif
1638         .ndo_vlan_rx_add_vid    = cpsw_ndo_vlan_rx_add_vid,
1639         .ndo_vlan_rx_kill_vid   = cpsw_ndo_vlan_rx_kill_vid,
1640 };
1641
1642 static void cpsw_get_drvinfo(struct net_device *ndev,
1643                              struct ethtool_drvinfo *info)
1644 {
1645         struct cpsw_priv *priv = netdev_priv(ndev);
1646
1647         strlcpy(info->driver, "TI CPSW Driver v1.0", sizeof(info->driver));
1648         strlcpy(info->version, "1.0", sizeof(info->version));
1649         strlcpy(info->bus_info, priv->pdev->name, sizeof(info->bus_info));
1650 }
1651
1652 static u32 cpsw_get_msglevel(struct net_device *ndev)
1653 {
1654         struct cpsw_priv *priv = netdev_priv(ndev);
1655         return priv->msg_enable;
1656 }
1657
1658 static void cpsw_set_msglevel(struct net_device *ndev, u32 value)
1659 {
1660         struct cpsw_priv *priv = netdev_priv(ndev);
1661         priv->msg_enable = value;
1662 }
1663
1664 static int cpsw_get_ts_info(struct net_device *ndev,
1665                             struct ethtool_ts_info *info)
1666 {
1667 #ifdef CONFIG_TI_CPTS
1668         struct cpsw_priv *priv = netdev_priv(ndev);
1669
1670         info->so_timestamping =
1671                 SOF_TIMESTAMPING_TX_HARDWARE |
1672                 SOF_TIMESTAMPING_TX_SOFTWARE |
1673                 SOF_TIMESTAMPING_RX_HARDWARE |
1674                 SOF_TIMESTAMPING_RX_SOFTWARE |
1675                 SOF_TIMESTAMPING_SOFTWARE |
1676                 SOF_TIMESTAMPING_RAW_HARDWARE;
1677         info->phc_index = priv->cpts->phc_index;
1678         info->tx_types =
1679                 (1 << HWTSTAMP_TX_OFF) |
1680                 (1 << HWTSTAMP_TX_ON);
1681         info->rx_filters =
1682                 (1 << HWTSTAMP_FILTER_NONE) |
1683                 (1 << HWTSTAMP_FILTER_PTP_V2_EVENT);
1684 #else
1685         info->so_timestamping =
1686                 SOF_TIMESTAMPING_TX_SOFTWARE |
1687                 SOF_TIMESTAMPING_RX_SOFTWARE |
1688                 SOF_TIMESTAMPING_SOFTWARE;
1689         info->phc_index = -1;
1690         info->tx_types = 0;
1691         info->rx_filters = 0;
1692 #endif
1693         return 0;
1694 }
1695
1696 static int cpsw_get_settings(struct net_device *ndev,
1697                              struct ethtool_cmd *ecmd)
1698 {
1699         struct cpsw_priv *priv = netdev_priv(ndev);
1700         int slave_no = cpsw_slave_index(priv);
1701
1702         if (priv->slaves[slave_no].phy)
1703                 return phy_ethtool_gset(priv->slaves[slave_no].phy, ecmd);
1704         else
1705                 return -EOPNOTSUPP;
1706 }
1707
1708 static int cpsw_set_settings(struct net_device *ndev, struct ethtool_cmd *ecmd)
1709 {
1710         struct cpsw_priv *priv = netdev_priv(ndev);
1711         int slave_no = cpsw_slave_index(priv);
1712
1713         if (priv->slaves[slave_no].phy)
1714                 return phy_ethtool_sset(priv->slaves[slave_no].phy, ecmd);
1715         else
1716                 return -EOPNOTSUPP;
1717 }
1718
1719 static void cpsw_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1720 {
1721         struct cpsw_priv *priv = netdev_priv(ndev);
1722         int slave_no = cpsw_slave_index(priv);
1723
1724         wol->supported = 0;
1725         wol->wolopts = 0;
1726
1727         if (priv->slaves[slave_no].phy)
1728                 phy_ethtool_get_wol(priv->slaves[slave_no].phy, wol);
1729 }
1730
1731 static int cpsw_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
1732 {
1733         struct cpsw_priv *priv = netdev_priv(ndev);
1734         int slave_no = cpsw_slave_index(priv);
1735
1736         if (priv->slaves[slave_no].phy)
1737                 return phy_ethtool_set_wol(priv->slaves[slave_no].phy, wol);
1738         else
1739                 return -EOPNOTSUPP;
1740 }
1741
1742 static const struct ethtool_ops cpsw_ethtool_ops = {
1743         .get_drvinfo    = cpsw_get_drvinfo,
1744         .get_msglevel   = cpsw_get_msglevel,
1745         .set_msglevel   = cpsw_set_msglevel,
1746         .get_link       = ethtool_op_get_link,
1747         .get_ts_info    = cpsw_get_ts_info,
1748         .get_settings   = cpsw_get_settings,
1749         .set_settings   = cpsw_set_settings,
1750         .get_coalesce   = cpsw_get_coalesce,
1751         .set_coalesce   = cpsw_set_coalesce,
1752         .get_sset_count         = cpsw_get_sset_count,
1753         .get_strings            = cpsw_get_strings,
1754         .get_ethtool_stats      = cpsw_get_ethtool_stats,
1755         .get_wol        = cpsw_get_wol,
1756         .set_wol        = cpsw_set_wol,
1757 };
1758
1759 static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv,
1760                             u32 slave_reg_ofs, u32 sliver_reg_ofs)
1761 {
1762         void __iomem            *regs = priv->regs;
1763         int                     slave_num = slave->slave_num;
1764         struct cpsw_slave_data  *data = priv->data.slave_data + slave_num;
1765
1766         slave->data     = data;
1767         slave->regs     = regs + slave_reg_ofs;
1768         slave->sliver   = regs + sliver_reg_ofs;
1769         slave->port_vlan = data->dual_emac_res_vlan;
1770 }
1771
1772 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1773                          struct platform_device *pdev)
1774 {
1775         struct device_node *node = pdev->dev.of_node;
1776         struct device_node *slave_node;
1777         int i = 0, ret;
1778         u32 prop;
1779
1780         if (!node)
1781                 return -EINVAL;
1782
1783         if (of_property_read_u32(node, "slaves", &prop)) {
1784                 pr_err("Missing slaves property in the DT.\n");
1785                 return -EINVAL;
1786         }
1787         data->slaves = prop;
1788
1789         if (of_property_read_u32(node, "active_slave", &prop)) {
1790                 pr_err("Missing active_slave property in the DT.\n");
1791                 return -EINVAL;
1792         }
1793         data->active_slave = prop;
1794
1795         if (of_property_read_u32(node, "cpts_clock_mult", &prop)) {
1796                 pr_err("Missing cpts_clock_mult property in the DT.\n");
1797                 return -EINVAL;
1798         }
1799         data->cpts_clock_mult = prop;
1800
1801         if (of_property_read_u32(node, "cpts_clock_shift", &prop)) {
1802                 pr_err("Missing cpts_clock_shift property in the DT.\n");
1803                 return -EINVAL;
1804         }
1805         data->cpts_clock_shift = prop;
1806
1807         data->slave_data = devm_kzalloc(&pdev->dev, data->slaves
1808                                         * sizeof(struct cpsw_slave_data),
1809                                         GFP_KERNEL);
1810         if (!data->slave_data)
1811                 return -ENOMEM;
1812
1813         if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1814                 pr_err("Missing cpdma_channels property in the DT.\n");
1815                 return -EINVAL;
1816         }
1817         data->channels = prop;
1818
1819         if (of_property_read_u32(node, "ale_entries", &prop)) {
1820                 pr_err("Missing ale_entries property in the DT.\n");
1821                 return -EINVAL;
1822         }
1823         data->ale_entries = prop;
1824
1825         if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1826                 pr_err("Missing bd_ram_size property in the DT.\n");
1827                 return -EINVAL;
1828         }
1829         data->bd_ram_size = prop;
1830
1831         if (of_property_read_u32(node, "rx_descs", &prop)) {
1832                 pr_err("Missing rx_descs property in the DT.\n");
1833                 return -EINVAL;
1834         }
1835         data->rx_descs = prop;
1836
1837         if (of_property_read_u32(node, "mac_control", &prop)) {
1838                 pr_err("Missing mac_control property in the DT.\n");
1839                 return -EINVAL;
1840         }
1841         data->mac_control = prop;
1842
1843         if (of_property_read_bool(node, "dual_emac"))
1844                 data->dual_emac = 1;
1845
1846         /*
1847          * Populate all the child nodes here...
1848          */
1849         ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
1850         /* We do not want to force this, as in some cases may not have child */
1851         if (ret)
1852                 pr_warn("Doesn't have any child node\n");
1853
1854         for_each_child_of_node(node, slave_node) {
1855                 struct cpsw_slave_data *slave_data = data->slave_data + i;
1856                 const void *mac_addr = NULL;
1857                 u32 phyid;
1858                 int lenp;
1859                 const __be32 *parp;
1860                 struct device_node *mdio_node;
1861                 struct platform_device *mdio;
1862
1863                 /* This is no slave child node, continue */
1864                 if (strcmp(slave_node->name, "slave"))
1865                         continue;
1866
1867                 parp = of_get_property(slave_node, "phy_id", &lenp);
1868                 if ((parp == NULL) || (lenp != (sizeof(void *) * 2))) {
1869                         pr_err("Missing slave[%d] phy_id property\n", i);
1870                         return -EINVAL;
1871                 }
1872                 mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
1873                 phyid = be32_to_cpup(parp+1);
1874                 mdio = of_find_device_by_node(mdio_node);
1875
1876                 if (strncmp(mdio->name, "gpio", 4) == 0) {
1877                         /* GPIO bitbang MDIO driver attached */
1878                         struct mii_bus *bus = dev_get_drvdata(&mdio->dev);
1879
1880                         snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
1881                                  PHY_ID_FMT, bus->id, phyid);
1882                 } else {
1883                         /* davinci MDIO driver attached */
1884                         snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
1885                                  PHY_ID_FMT, mdio->name, phyid);
1886                 }
1887
1888                 mac_addr = of_get_mac_address(slave_node);
1889                 if (mac_addr)
1890                         memcpy(slave_data->mac_addr, mac_addr, ETH_ALEN);
1891
1892                 slave_data->phy_if = of_get_phy_mode(slave_node);
1893                 if (slave_data->phy_if < 0) {
1894                         pr_err("Missing or malformed slave[%d] phy-mode property\n",
1895                                i);
1896                         return slave_data->phy_if;
1897                 }
1898
1899                 if (data->dual_emac) {
1900                         if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
1901                                                  &prop)) {
1902                                 pr_err("Missing dual_emac_res_vlan in DT.\n");
1903                                 slave_data->dual_emac_res_vlan = i+1;
1904                                 pr_err("Using %d as Reserved VLAN for %d slave\n",
1905                                        slave_data->dual_emac_res_vlan, i);
1906                         } else {
1907                                 slave_data->dual_emac_res_vlan = prop;
1908                         }
1909                 }
1910
1911                 i++;
1912                 if (i == data->slaves)
1913                         break;
1914         }
1915
1916         return 0;
1917 }
1918
1919 static int cpsw_probe_dual_emac(struct platform_device *pdev,
1920                                 struct cpsw_priv *priv)
1921 {
1922         struct cpsw_platform_data       *data = &priv->data;
1923         struct net_device               *ndev;
1924         struct cpsw_priv                *priv_sl2;
1925         int ret = 0, i;
1926
1927         ndev = alloc_etherdev(sizeof(struct cpsw_priv));
1928         if (!ndev) {
1929                 pr_err("cpsw: error allocating net_device\n");
1930                 return -ENOMEM;
1931         }
1932
1933         priv_sl2 = netdev_priv(ndev);
1934         spin_lock_init(&priv_sl2->lock);
1935         priv_sl2->data = *data;
1936         priv_sl2->pdev = pdev;
1937         priv_sl2->ndev = ndev;
1938         priv_sl2->dev  = &ndev->dev;
1939         priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1940         priv_sl2->rx_packet_max = max(rx_packet_max, 128);
1941
1942         if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
1943                 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
1944                         ETH_ALEN);
1945                 pr_info("cpsw: Detected MACID = %pM\n", priv_sl2->mac_addr);
1946         } else {
1947                 random_ether_addr(priv_sl2->mac_addr);
1948                 pr_info("cpsw: Random MACID = %pM\n", priv_sl2->mac_addr);
1949         }
1950         memcpy(ndev->dev_addr, priv_sl2->mac_addr, ETH_ALEN);
1951
1952         priv_sl2->slaves = priv->slaves;
1953         priv_sl2->clk = priv->clk;
1954
1955         priv_sl2->coal_intvl = 0;
1956         priv_sl2->bus_freq_mhz = priv->bus_freq_mhz;
1957
1958         priv_sl2->regs = priv->regs;
1959         priv_sl2->host_port = priv->host_port;
1960         priv_sl2->host_port_regs = priv->host_port_regs;
1961         priv_sl2->wr_regs = priv->wr_regs;
1962         priv_sl2->hw_stats = priv->hw_stats;
1963         priv_sl2->dma = priv->dma;
1964         priv_sl2->txch = priv->txch;
1965         priv_sl2->rxch = priv->rxch;
1966         priv_sl2->ale = priv->ale;
1967         priv_sl2->emac_port = 1;
1968         priv->slaves[1].ndev = ndev;
1969         priv_sl2->cpts = priv->cpts;
1970         priv_sl2->version = priv->version;
1971
1972         for (i = 0; i < priv->num_irqs; i++) {
1973                 priv_sl2->irqs_table[i] = priv->irqs_table[i];
1974                 priv_sl2->num_irqs = priv->num_irqs;
1975         }
1976         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1977
1978         ndev->netdev_ops = &cpsw_netdev_ops;
1979         SET_ETHTOOL_OPS(ndev, &cpsw_ethtool_ops);
1980         netif_napi_add(ndev, &priv_sl2->napi, cpsw_poll, CPSW_POLL_WEIGHT);
1981
1982         /* register the network device */
1983         SET_NETDEV_DEV(ndev, &pdev->dev);
1984         ret = register_netdev(ndev);
1985         if (ret) {
1986                 pr_err("cpsw: error registering net device\n");
1987                 free_netdev(ndev);
1988                 ret = -ENODEV;
1989         }
1990
1991         return ret;
1992 }
1993
1994 static int cpsw_probe(struct platform_device *pdev)
1995 {
1996         struct cpsw_platform_data       *data;
1997         struct net_device               *ndev;
1998         struct cpsw_priv                *priv;
1999         struct cpdma_params             dma_params;
2000         struct cpsw_ale_params          ale_params;
2001         void __iomem                    *ss_regs;
2002         struct resource                 *res, *ss_res;
2003         u32 slave_offset, sliver_offset, slave_size;
2004         int ret = 0, i, k = 0;
2005
2006         ndev = alloc_etherdev(sizeof(struct cpsw_priv));
2007         if (!ndev) {
2008                 pr_err("error allocating net_device\n");
2009                 return -ENOMEM;
2010         }
2011
2012         platform_set_drvdata(pdev, ndev);
2013         priv = netdev_priv(ndev);
2014         spin_lock_init(&priv->lock);
2015         priv->pdev = pdev;
2016         priv->ndev = ndev;
2017         priv->dev  = &ndev->dev;
2018         priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
2019         priv->rx_packet_max = max(rx_packet_max, 128);
2020         priv->cpts = devm_kzalloc(&pdev->dev, sizeof(struct cpts), GFP_KERNEL);
2021         priv->irq_enabled = true;
2022         if (!priv->cpts) {
2023                 pr_err("error allocating cpts\n");
2024                 goto clean_ndev_ret;
2025         }
2026
2027         /*
2028          * This may be required here for child devices.
2029          */
2030         pm_runtime_enable(&pdev->dev);
2031
2032         /* Select default pin state */
2033         pinctrl_pm_select_default_state(&pdev->dev);
2034
2035         if (cpsw_probe_dt(&priv->data, pdev)) {
2036                 pr_err("cpsw: platform data missing\n");
2037                 ret = -ENODEV;
2038                 goto clean_runtime_disable_ret;
2039         }
2040         data = &priv->data;
2041
2042         if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
2043                 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
2044                 pr_info("Detected MACID = %pM\n", priv->mac_addr);
2045         } else {
2046                 eth_random_addr(priv->mac_addr);
2047                 pr_info("Random MACID = %pM\n", priv->mac_addr);
2048         }
2049
2050         memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
2051
2052         priv->slaves = devm_kzalloc(&pdev->dev,
2053                                     sizeof(struct cpsw_slave) * data->slaves,
2054                                     GFP_KERNEL);
2055         if (!priv->slaves) {
2056                 ret = -ENOMEM;
2057                 goto clean_runtime_disable_ret;
2058         }
2059         for (i = 0; i < data->slaves; i++)
2060                 priv->slaves[i].slave_num = i;
2061
2062         priv->slaves[0].ndev = ndev;
2063         priv->emac_port = 0;
2064
2065         priv->clk = devm_clk_get(&pdev->dev, "fck");
2066         if (IS_ERR(priv->clk)) {
2067                 dev_err(priv->dev, "fck is not found\n");
2068                 ret = -ENODEV;
2069                 goto clean_runtime_disable_ret;
2070         }
2071         priv->coal_intvl = 0;
2072         priv->bus_freq_mhz = clk_get_rate(priv->clk) / 1000000;
2073
2074         ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2075         ss_regs = devm_ioremap_resource(&pdev->dev, ss_res);
2076         if (IS_ERR(ss_regs)) {
2077                 ret = PTR_ERR(ss_regs);
2078                 goto clean_runtime_disable_ret;
2079         }
2080         priv->regs = ss_regs;
2081         priv->host_port = HOST_PORT_NUM;
2082
2083         /* Need to enable clocks with runtime PM api to access module
2084          * registers
2085          */
2086         pm_runtime_get_sync(&pdev->dev);
2087         priv->version = readl(&priv->regs->id_ver);
2088         pm_runtime_put_sync(&pdev->dev);
2089
2090         res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2091         priv->wr_regs = devm_ioremap_resource(&pdev->dev, res);
2092         if (IS_ERR(priv->wr_regs)) {
2093                 ret = PTR_ERR(priv->wr_regs);
2094                 goto clean_runtime_disable_ret;
2095         }
2096
2097         memset(&dma_params, 0, sizeof(dma_params));
2098         memset(&ale_params, 0, sizeof(ale_params));
2099
2100         switch (priv->version) {
2101         case CPSW_VERSION_1:
2102                 priv->host_port_regs = ss_regs + CPSW1_HOST_PORT_OFFSET;
2103                 priv->cpts->reg      = ss_regs + CPSW1_CPTS_OFFSET;
2104                 priv->hw_stats       = ss_regs + CPSW1_HW_STATS;
2105                 dma_params.dmaregs   = ss_regs + CPSW1_CPDMA_OFFSET;
2106                 dma_params.txhdp     = ss_regs + CPSW1_STATERAM_OFFSET;
2107                 ale_params.ale_regs  = ss_regs + CPSW1_ALE_OFFSET;
2108                 slave_offset         = CPSW1_SLAVE_OFFSET;
2109                 slave_size           = CPSW1_SLAVE_SIZE;
2110                 sliver_offset        = CPSW1_SLIVER_OFFSET;
2111                 dma_params.desc_mem_phys = 0;
2112                 break;
2113         case CPSW_VERSION_2:
2114         case CPSW_VERSION_3:
2115         case CPSW_VERSION_4:
2116                 priv->host_port_regs = ss_regs + CPSW2_HOST_PORT_OFFSET;
2117                 priv->cpts->reg      = ss_regs + CPSW2_CPTS_OFFSET;
2118                 priv->hw_stats       = ss_regs + CPSW2_HW_STATS;
2119                 dma_params.dmaregs   = ss_regs + CPSW2_CPDMA_OFFSET;
2120                 dma_params.txhdp     = ss_regs + CPSW2_STATERAM_OFFSET;
2121                 ale_params.ale_regs  = ss_regs + CPSW2_ALE_OFFSET;
2122                 slave_offset         = CPSW2_SLAVE_OFFSET;
2123                 slave_size           = CPSW2_SLAVE_SIZE;
2124                 sliver_offset        = CPSW2_SLIVER_OFFSET;
2125                 dma_params.desc_mem_phys =
2126                         (u32 __force) ss_res->start + CPSW2_BD_OFFSET;
2127                 break;
2128         default:
2129                 dev_err(priv->dev, "unknown version 0x%08x\n", priv->version);
2130                 ret = -ENODEV;
2131                 goto clean_runtime_disable_ret;
2132         }
2133         for (i = 0; i < priv->data.slaves; i++) {
2134                 struct cpsw_slave *slave = &priv->slaves[i];
2135                 cpsw_slave_init(slave, priv, slave_offset, sliver_offset);
2136                 slave_offset  += slave_size;
2137                 sliver_offset += SLIVER_SIZE;
2138         }
2139
2140         dma_params.dev          = &pdev->dev;
2141         dma_params.rxthresh     = dma_params.dmaregs + CPDMA_RXTHRESH;
2142         dma_params.rxfree       = dma_params.dmaregs + CPDMA_RXFREE;
2143         dma_params.rxhdp        = dma_params.txhdp + CPDMA_RXHDP;
2144         dma_params.txcp         = dma_params.txhdp + CPDMA_TXCP;
2145         dma_params.rxcp         = dma_params.txhdp + CPDMA_RXCP;
2146
2147         dma_params.num_chan             = data->channels;
2148         dma_params.has_soft_reset       = true;
2149         dma_params.min_packet_size      = CPSW_MIN_PACKET_SIZE;
2150         dma_params.desc_mem_size        = data->bd_ram_size;
2151         dma_params.desc_align           = 16;
2152         dma_params.has_ext_regs         = true;
2153         dma_params.desc_hw_addr         = dma_params.desc_mem_phys;
2154
2155         priv->dma = cpdma_ctlr_create(&dma_params);
2156         if (!priv->dma) {
2157                 dev_err(priv->dev, "error initializing dma\n");
2158                 ret = -ENOMEM;
2159                 goto clean_runtime_disable_ret;
2160         }
2161
2162         priv->txch = cpdma_chan_create(priv->dma, tx_chan_num(0),
2163                                        cpsw_tx_handler);
2164         priv->rxch = cpdma_chan_create(priv->dma, rx_chan_num(0),
2165                                        cpsw_rx_handler);
2166
2167         if (WARN_ON(!priv->txch || !priv->rxch)) {
2168                 dev_err(priv->dev, "error initializing dma channels\n");
2169                 ret = -ENOMEM;
2170                 goto clean_dma_ret;
2171         }
2172
2173         ale_params.dev                  = &ndev->dev;
2174         ale_params.ale_ageout           = ale_ageout;
2175         ale_params.ale_entries          = data->ale_entries;
2176         ale_params.ale_ports            = data->slaves;
2177
2178         priv->ale = cpsw_ale_create(&ale_params);
2179         if (!priv->ale) {
2180                 dev_err(priv->dev, "error initializing ale engine\n");
2181                 ret = -ENODEV;
2182                 goto clean_dma_ret;
2183         }
2184
2185         ndev->irq = platform_get_irq(pdev, 0);
2186         if (ndev->irq < 0) {
2187                 dev_err(priv->dev, "error getting irq resource\n");
2188                 ret = -ENOENT;
2189                 goto clean_ale_ret;
2190         }
2191
2192         while ((res = platform_get_resource(priv->pdev, IORESOURCE_IRQ, k))) {
2193                 for (i = res->start; i <= res->end; i++) {
2194                         if (devm_request_irq(&pdev->dev, i, cpsw_interrupt, 0,
2195                                              dev_name(&pdev->dev), priv)) {
2196                                 dev_err(priv->dev, "error attaching irq\n");
2197                                 goto clean_ale_ret;
2198                         }
2199                         priv->irqs_table[k] = i;
2200                         priv->num_irqs = k + 1;
2201                 }
2202                 k++;
2203         }
2204
2205         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
2206
2207         ndev->netdev_ops = &cpsw_netdev_ops;
2208         SET_ETHTOOL_OPS(ndev, &cpsw_ethtool_ops);
2209         netif_napi_add(ndev, &priv->napi, cpsw_poll, CPSW_POLL_WEIGHT);
2210
2211         /* register the network device */
2212         SET_NETDEV_DEV(ndev, &pdev->dev);
2213         ret = register_netdev(ndev);
2214         if (ret) {
2215                 dev_err(priv->dev, "error registering net device\n");
2216                 ret = -ENODEV;
2217                 goto clean_ale_ret;
2218         }
2219
2220         cpsw_notice(priv, probe, "initialized device (regs %pa, irq %d)\n",
2221                     &ss_res->start, ndev->irq);
2222
2223         if (priv->data.dual_emac) {
2224                 ret = cpsw_probe_dual_emac(pdev, priv);
2225                 if (ret) {
2226                         cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
2227                         goto clean_ale_ret;
2228                 }
2229         }
2230
2231         return 0;
2232
2233 clean_ale_ret:
2234         cpsw_ale_destroy(priv->ale);
2235 clean_dma_ret:
2236         cpdma_chan_destroy(priv->txch);
2237         cpdma_chan_destroy(priv->rxch);
2238         cpdma_ctlr_destroy(priv->dma);
2239 clean_runtime_disable_ret:
2240         pm_runtime_disable(&pdev->dev);
2241 clean_ndev_ret:
2242         free_netdev(priv->ndev);
2243         return ret;
2244 }
2245
2246 static int cpsw_remove(struct platform_device *pdev)
2247 {
2248         struct net_device *ndev = platform_get_drvdata(pdev);
2249         struct cpsw_priv *priv = netdev_priv(ndev);
2250
2251         if (priv->data.dual_emac)
2252                 unregister_netdev(cpsw_get_slave_ndev(priv, 1));
2253         unregister_netdev(ndev);
2254
2255         cpsw_ale_destroy(priv->ale);
2256         cpdma_chan_destroy(priv->txch);
2257         cpdma_chan_destroy(priv->rxch);
2258         cpdma_ctlr_destroy(priv->dma);
2259         pm_runtime_disable(&pdev->dev);
2260         if (priv->data.dual_emac)
2261                 free_netdev(cpsw_get_slave_ndev(priv, 1));
2262         free_netdev(ndev);
2263         return 0;
2264 }
2265
2266 static int cpsw_suspend(struct device *dev)
2267 {
2268         struct platform_device  *pdev = to_platform_device(dev);
2269         struct net_device       *ndev = platform_get_drvdata(pdev);
2270         struct cpsw_priv        *priv = netdev_priv(ndev);
2271
2272         if (netif_running(ndev))
2273                 cpsw_ndo_stop(ndev);
2274
2275         for_each_slave(priv, soft_reset_slave);
2276
2277         pm_runtime_put_sync(&pdev->dev);
2278
2279         /* Select sleep pin state */
2280         pinctrl_pm_select_sleep_state(&pdev->dev);
2281
2282         return 0;
2283 }
2284
2285 static int cpsw_resume(struct device *dev)
2286 {
2287         struct platform_device  *pdev = to_platform_device(dev);
2288         struct net_device       *ndev = platform_get_drvdata(pdev);
2289
2290         pm_runtime_get_sync(&pdev->dev);
2291
2292         /* Select default pin state */
2293         pinctrl_pm_select_default_state(&pdev->dev);
2294
2295         if (netif_running(ndev))
2296                 cpsw_ndo_open(ndev);
2297         return 0;
2298 }
2299
2300 static const struct dev_pm_ops cpsw_pm_ops = {
2301         .suspend        = cpsw_suspend,
2302         .resume         = cpsw_resume,
2303 };
2304
2305 static const struct of_device_id cpsw_of_mtable[] = {
2306         { .compatible = "ti,cpsw", },
2307         { /* sentinel */ },
2308 };
2309 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
2310
2311 static struct platform_driver cpsw_driver = {
2312         .driver = {
2313                 .name    = "cpsw",
2314                 .owner   = THIS_MODULE,
2315                 .pm      = &cpsw_pm_ops,
2316                 .of_match_table = cpsw_of_mtable,
2317         },
2318         .probe = cpsw_probe,
2319         .remove = cpsw_remove,
2320 };
2321
2322 static int __init cpsw_init(void)
2323 {
2324         return platform_driver_register(&cpsw_driver);
2325 }
2326 late_initcall(cpsw_init);
2327
2328 static void __exit cpsw_exit(void)
2329 {
2330         platform_driver_unregister(&cpsw_driver);
2331 }
2332 module_exit(cpsw_exit);
2333
2334 MODULE_LICENSE("GPL");
2335 MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
2336 MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
2337 MODULE_DESCRIPTION("TI CPSW Ethernet driver");