drivers/net/dsa/b53/b53_priv.h

   1 /*
   2  * B53 common definitions
   3  *
   4  * Copyright (C) 2011-2013 Jonas Gorski <jogo@openwrt.org>
   5  *
   6  * Permission to use, copy, modify, and/or distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #ifndef __B53_PRIV_H
  20 #define __B53_PRIV_H
  21
  22 #include <linux/kernel.h>
  23 #include <linux/mutex.h>
  24 #include <linux/phy.h>
  25 #include <net/dsa.h>
  26
  27 #include "b53_regs.h"
  28
  29 struct b53_device;
  30 struct net_device;
  31
  32 struct b53_io_ops {
  33         int (*read8)(struct b53_device *dev, u8 page, u8 reg, u8 *value);
  34         int (*read16)(struct b53_device *dev, u8 page, u8 reg, u16 *value);
  35         int (*read32)(struct b53_device *dev, u8 page, u8 reg, u32 *value);
  36         int (*read48)(struct b53_device *dev, u8 page, u8 reg, u64 *value);
  37         int (*read64)(struct b53_device *dev, u8 page, u8 reg, u64 *value);
  38         int (*write8)(struct b53_device *dev, u8 page, u8 reg, u8 value);
  39         int (*write16)(struct b53_device *dev, u8 page, u8 reg, u16 value);
  40         int (*write32)(struct b53_device *dev, u8 page, u8 reg, u32 value);
  41         int (*write48)(struct b53_device *dev, u8 page, u8 reg, u64 value);
  42         int (*write64)(struct b53_device *dev, u8 page, u8 reg, u64 value);
  43         int (*phy_read16)(struct b53_device *dev, int addr, int reg, u16 *value);
  44         int (*phy_write16)(struct b53_device *dev, int addr, int reg, u16 value);
  45 };
  46
  47 enum {
  48         BCM5325_DEVICE_ID = 0x25,
  49         BCM5365_DEVICE_ID = 0x65,
  50         BCM5395_DEVICE_ID = 0x95,
  51         BCM5397_DEVICE_ID = 0x97,
  52         BCM5398_DEVICE_ID = 0x98,
  53         BCM53115_DEVICE_ID = 0x53115,
  54         BCM53125_DEVICE_ID = 0x53125,
  55         BCM53128_DEVICE_ID = 0x53128,
  56         BCM63XX_DEVICE_ID = 0x6300,
  57         BCM53010_DEVICE_ID = 0x53010,
  58         BCM53011_DEVICE_ID = 0x53011,
  59         BCM53012_DEVICE_ID = 0x53012,
  60         BCM53018_DEVICE_ID = 0x53018,
  61         BCM53019_DEVICE_ID = 0x53019,
  62         BCM58XX_DEVICE_ID = 0x5800,
  63         BCM7445_DEVICE_ID = 0x7445,
  64 };
  65
  66 #define B53_N_PORTS     9
  67 #define B53_N_PORTS_25  6
  68
  69 struct b53_port {
  70         u16             vlan_ctl_mask;
  71         struct net_device *bridge_dev;
  72 };
  73
  74 struct b53_vlan {
  75         u16 members;
  76         u16 untag;
  77         bool valid;
  78 };
  79
  80 struct b53_device {
  81         struct dsa_switch *ds;
  82         struct b53_platform_data *pdata;
  83         const char *name;
  84
  85         struct mutex reg_mutex;
  86         struct mutex stats_mutex;
  87         const struct b53_io_ops *ops;
  88
  89         /* chip specific data */
  90         u32 chip_id;
  91         u8 core_rev;
  92         u8 vta_regs[3];
  93         u8 duplex_reg;
  94         u8 jumbo_pm_reg;
  95         u8 jumbo_size_reg;
  96         int reset_gpio;
  97         u8 num_arl_entries;
  98
  99         /* used ports mask */
 100         u16 enabled_ports;
 101         unsigned int cpu_port;
 102
 103         /* connect specific data */
 104         u8 current_page;
 105         struct device *dev;
 106
 107         /* Master MDIO bus we got probed from */
 108         struct mii_bus *bus;
 109
 110         void *priv;
 111
 112         /* run time configuration */
 113         bool enable_jumbo;
 114
 115         unsigned int num_vlans;
 116         struct b53_vlan *vlans;
 117         unsigned int num_ports;
 118         struct b53_port *ports;
 119 };
 120
 121 #define b53_for_each_port(dev, i) \
 122         for (i = 0; i < B53_N_PORTS; i++) \
 123                 if (dev->enabled_ports & BIT(i))
 124
 125
 126 static inline int is5325(struct b53_device *dev)
 127 {
 128         return dev->chip_id == BCM5325_DEVICE_ID;
 129 }
 130
 131 static inline int is5365(struct b53_device *dev)
 132 {
 133 #ifdef CONFIG_BCM47XX
 134         return dev->chip_id == BCM5365_DEVICE_ID;
 135 #else
 136         return 0;
 137 #endif
 138 }
 139
 140 static inline int is5397_98(struct b53_device *dev)
 141 {
 142         return dev->chip_id == BCM5397_DEVICE_ID ||
 143                 dev->chip_id == BCM5398_DEVICE_ID;
 144 }
 145
 146 static inline int is539x(struct b53_device *dev)
 147 {
 148         return dev->chip_id == BCM5395_DEVICE_ID ||
 149                 dev->chip_id == BCM5397_DEVICE_ID ||
 150                 dev->chip_id == BCM5398_DEVICE_ID;
 151 }
 152
 153 static inline int is531x5(struct b53_device *dev)
 154 {
 155         return dev->chip_id == BCM53115_DEVICE_ID ||
 156                 dev->chip_id == BCM53125_DEVICE_ID ||
 157                 dev->chip_id == BCM53128_DEVICE_ID;
 158 }
 159
 160 static inline int is63xx(struct b53_device *dev)
 161 {
 162 #ifdef CONFIG_BCM63XX
 163         return dev->chip_id == BCM63XX_DEVICE_ID;
 164 #else
 165         return 0;
 166 #endif
 167 }
 168
 169 static inline int is5301x(struct b53_device *dev)
 170 {
 171         return dev->chip_id == BCM53010_DEVICE_ID ||
 172                 dev->chip_id == BCM53011_DEVICE_ID ||
 173                 dev->chip_id == BCM53012_DEVICE_ID ||
 174                 dev->chip_id == BCM53018_DEVICE_ID ||
 175                 dev->chip_id == BCM53019_DEVICE_ID;
 176 }
 177
 178 static inline int is58xx(struct b53_device *dev)
 179 {
 180         return dev->chip_id == BCM58XX_DEVICE_ID ||
 181                 dev->chip_id == BCM7445_DEVICE_ID;
 182 }
 183
 184 #define B53_CPU_PORT_25 5
 185 #define B53_CPU_PORT    8
 186
 187 static inline int is_cpu_port(struct b53_device *dev, int port)
 188 {
 189         return dev->cpu_port;
 190 }
 191
 192 struct b53_device *b53_switch_alloc(struct device *base,
 193                                     const struct b53_io_ops *ops,
 194                                     void *priv);
 195
 196 int b53_switch_detect(struct b53_device *dev);
 197
 198 int b53_switch_register(struct b53_device *dev);
 199
 200 static inline void b53_switch_remove(struct b53_device *dev)
 201 {
 202         dsa_unregister_switch(dev->ds);
 203 }
 204
 205 static inline int b53_read8(struct b53_device *dev, u8 page, u8 reg, u8 *val)
 206 {
 207         int ret;
 208
 209         mutex_lock(&dev->reg_mutex);
 210         ret = dev->ops->read8(dev, page, reg, val);
 211         mutex_unlock(&dev->reg_mutex);
 212
 213         return ret;
 214 }
 215
 216 static inline int b53_read16(struct b53_device *dev, u8 page, u8 reg, u16 *val)
 217 {
 218         int ret;
 219
 220         mutex_lock(&dev->reg_mutex);
 221         ret = dev->ops->read16(dev, page, reg, val);
 222         mutex_unlock(&dev->reg_mutex);
 223
 224         return ret;
 225 }
 226
 227 static inline int b53_read32(struct b53_device *dev, u8 page, u8 reg, u32 *val)
 228 {
 229         int ret;
 230
 231         mutex_lock(&dev->reg_mutex);
 232         ret = dev->ops->read32(dev, page, reg, val);
 233         mutex_unlock(&dev->reg_mutex);
 234
 235         return ret;
 236 }
 237
 238 static inline int b53_read48(struct b53_device *dev, u8 page, u8 reg, u64 *val)
 239 {
 240         int ret;
 241
 242         mutex_lock(&dev->reg_mutex);
 243         ret = dev->ops->read48(dev, page, reg, val);
 244         mutex_unlock(&dev->reg_mutex);
 245
 246         return ret;
 247 }
 248
 249 static inline int b53_read64(struct b53_device *dev, u8 page, u8 reg, u64 *val)
 250 {
 251         int ret;
 252
 253         mutex_lock(&dev->reg_mutex);
 254         ret = dev->ops->read64(dev, page, reg, val);
 255         mutex_unlock(&dev->reg_mutex);
 256
 257         return ret;
 258 }
 259
 260 static inline int b53_write8(struct b53_device *dev, u8 page, u8 reg, u8 value)
 261 {
 262         int ret;
 263
 264         mutex_lock(&dev->reg_mutex);
 265         ret = dev->ops->write8(dev, page, reg, value);
 266         mutex_unlock(&dev->reg_mutex);
 267
 268         return ret;
 269 }
 270
 271 static inline int b53_write16(struct b53_device *dev, u8 page, u8 reg,
 272                               u16 value)
 273 {
 274         int ret;
 275
 276         mutex_lock(&dev->reg_mutex);
 277         ret = dev->ops->write16(dev, page, reg, value);
 278         mutex_unlock(&dev->reg_mutex);
 279
 280         return ret;
 281 }
 282
 283 static inline int b53_write32(struct b53_device *dev, u8 page, u8 reg,
 284                               u32 value)
 285 {
 286         int ret;
 287
 288         mutex_lock(&dev->reg_mutex);
 289         ret = dev->ops->write32(dev, page, reg, value);
 290         mutex_unlock(&dev->reg_mutex);
 291
 292         return ret;
 293 }
 294
 295 static inline int b53_write48(struct b53_device *dev, u8 page, u8 reg,
 296                               u64 value)
 297 {
 298         int ret;
 299
 300         mutex_lock(&dev->reg_mutex);
 301         ret = dev->ops->write48(dev, page, reg, value);
 302         mutex_unlock(&dev->reg_mutex);
 303
 304         return ret;
 305 }
 306
 307 static inline int b53_write64(struct b53_device *dev, u8 page, u8 reg,
 308                                u64 value)
 309 {
 310         int ret;
 311
 312         mutex_lock(&dev->reg_mutex);
 313         ret = dev->ops->write64(dev, page, reg, value);
 314         mutex_unlock(&dev->reg_mutex);
 315
 316         return ret;
 317 }
 318
 319 struct b53_arl_entry {
 320         u8 port;
 321         u8 mac[ETH_ALEN];
 322         u16 vid;
 323         u8 is_valid:1;
 324         u8 is_age:1;
 325         u8 is_static:1;
 326 };
 327
 328 static inline void b53_mac_from_u64(u64 src, u8 *dst)
 329 {
 330         unsigned int i;
 331
 332         for (i = 0; i < ETH_ALEN; i++)
 333                 dst[ETH_ALEN - 1 - i] = (src >> (8 * i)) & 0xff;
 334 }
 335
 336 static inline u64 b53_mac_to_u64(const u8 *src)
 337 {
 338         unsigned int i;
 339         u64 dst = 0;
 340
 341         for (i = 0; i < ETH_ALEN; i++)
 342                 dst |= (u64)src[ETH_ALEN - 1 - i] << (8 * i);
 343
 344         return dst;
 345 }
 346
 347 static inline void b53_arl_to_entry(struct b53_arl_entry *ent,
 348                                     u64 mac_vid, u32 fwd_entry)
 349 {
 350         memset(ent, 0, sizeof(*ent));
 351         ent->port = fwd_entry & ARLTBL_DATA_PORT_ID_MASK;
 352         ent->is_valid = !!(fwd_entry & ARLTBL_VALID);
 353         ent->is_age = !!(fwd_entry & ARLTBL_AGE);
 354         ent->is_static = !!(fwd_entry & ARLTBL_STATIC);
 355         b53_mac_from_u64(mac_vid, ent->mac);
 356         ent->vid = mac_vid >> ARLTBL_VID_S;
 357 }
 358
 359 static inline void b53_arl_from_entry(u64 *mac_vid, u32 *fwd_entry,
 360                                       const struct b53_arl_entry *ent)
 361 {
 362         *mac_vid = b53_mac_to_u64(ent->mac);
 363         *mac_vid |= (u64)(ent->vid & ARLTBL_VID_MASK) << ARLTBL_VID_S;
 364         *fwd_entry = ent->port & ARLTBL_DATA_PORT_ID_MASK;
 365         if (ent->is_valid)
 366                 *fwd_entry |= ARLTBL_VALID;
 367         if (ent->is_static)
 368                 *fwd_entry |= ARLTBL_STATIC;
 369         if (ent->is_age)
 370                 *fwd_entry |= ARLTBL_AGE;
 371 }
 372
 373 #ifdef CONFIG_BCM47XX
 374
 375 #include <linux/bcm47xx_nvram.h>
 376 #include <bcm47xx_board.h>
 377 static inline int b53_switch_get_reset_gpio(struct b53_device *dev)
 378 {
 379         enum bcm47xx_board board = bcm47xx_board_get();
 380
 381         switch (board) {
 382         case BCM47XX_BOARD_LINKSYS_WRT300NV11:
 383         case BCM47XX_BOARD_LINKSYS_WRT310NV1:
 384                 return 8;
 385         default:
 386                 return bcm47xx_nvram_gpio_pin("robo_reset");
 387         }
 388 }
 389 #else
 390 static inline int b53_switch_get_reset_gpio(struct b53_device *dev)
 391 {
 392         return -ENOENT;
 393 }
 394 #endif
 395 #endif