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 };
  64
  65 #define B53_N_PORTS     9
  66 #define B53_N_PORTS_25  6
  67
  68 struct b53_port {
  69         u16             vlan_ctl_mask;
  70         struct net_device *bridge_dev;
  71 };
  72
  73 struct b53_vlan {
  74         u16 members;
  75         u16 untag;
  76         bool valid;
  77 };
  78
  79 struct b53_device {
  80         struct dsa_switch *ds;
  81         struct b53_platform_data *pdata;
  82         const char *name;
  83
  84         struct mutex reg_mutex;
  85         struct mutex stats_mutex;
  86         const struct b53_io_ops *ops;
  87
  88         /* chip specific data */
  89         u32 chip_id;
  90         u8 core_rev;
  91         u8 vta_regs[3];
  92         u8 duplex_reg;
  93         u8 jumbo_pm_reg;
  94         u8 jumbo_size_reg;
  95         int reset_gpio;
  96         u8 num_arl_entries;
  97
  98         /* used ports mask */
  99         u16 enabled_ports;
 100         unsigned int cpu_port;
 101
 102         /* connect specific data */
 103         u8 current_page;
 104         struct device *dev;
 105
 106         /* Master MDIO bus we got probed from */
 107         struct mii_bus *bus;
 108
 109         void *priv;
 110
 111         /* run time configuration */
 112         bool enable_jumbo;
 113
 114         unsigned int num_vlans;
 115         struct b53_vlan *vlans;
 116         unsigned int num_ports;
 117         struct b53_port *ports;
 118 };
 119
 120 #define b53_for_each_port(dev, i) \
 121         for (i = 0; i < B53_N_PORTS; i++) \
 122                 if (dev->enabled_ports & BIT(i))
 123
 124
 125 static inline int is5325(struct b53_device *dev)
 126 {
 127         return dev->chip_id == BCM5325_DEVICE_ID;
 128 }
 129
 130 static inline int is5365(struct b53_device *dev)
 131 {
 132 #ifdef CONFIG_BCM47XX
 133         return dev->chip_id == BCM5365_DEVICE_ID;
 134 #else
 135         return 0;
 136 #endif
 137 }
 138
 139 static inline int is5397_98(struct b53_device *dev)
 140 {
 141         return dev->chip_id == BCM5397_DEVICE_ID ||
 142                 dev->chip_id == BCM5398_DEVICE_ID;
 143 }
 144
 145 static inline int is539x(struct b53_device *dev)
 146 {
 147         return dev->chip_id == BCM5395_DEVICE_ID ||
 148                 dev->chip_id == BCM5397_DEVICE_ID ||
 149                 dev->chip_id == BCM5398_DEVICE_ID;
 150 }
 151
 152 static inline int is531x5(struct b53_device *dev)
 153 {
 154         return dev->chip_id == BCM53115_DEVICE_ID ||
 155                 dev->chip_id == BCM53125_DEVICE_ID ||
 156                 dev->chip_id == BCM53128_DEVICE_ID;
 157 }
 158
 159 static inline int is63xx(struct b53_device *dev)
 160 {
 161 #ifdef CONFIG_BCM63XX
 162         return dev->chip_id == BCM63XX_DEVICE_ID;
 163 #else
 164         return 0;
 165 #endif
 166 }
 167
 168 static inline int is5301x(struct b53_device *dev)
 169 {
 170         return dev->chip_id == BCM53010_DEVICE_ID ||
 171                 dev->chip_id == BCM53011_DEVICE_ID ||
 172                 dev->chip_id == BCM53012_DEVICE_ID ||
 173                 dev->chip_id == BCM53018_DEVICE_ID ||
 174                 dev->chip_id == BCM53019_DEVICE_ID;
 175 }
 176
 177 #define B53_CPU_PORT_25 5
 178 #define B53_CPU_PORT    8
 179
 180 static inline int is_cpu_port(struct b53_device *dev, int port)
 181 {
 182         return dev->cpu_port;
 183 }
 184
 185 struct b53_device *b53_switch_alloc(struct device *base, struct b53_io_ops *ops,
 186                                     void *priv);
 187
 188 int b53_switch_detect(struct b53_device *dev);
 189
 190 int b53_switch_register(struct b53_device *dev);
 191
 192 static inline void b53_switch_remove(struct b53_device *dev)
 193 {
 194         dsa_unregister_switch(dev->ds);
 195 }
 196
 197 static inline int b53_read8(struct b53_device *dev, u8 page, u8 reg, u8 *val)
 198 {
 199         int ret;
 200
 201         mutex_lock(&dev->reg_mutex);
 202         ret = dev->ops->read8(dev, page, reg, val);
 203         mutex_unlock(&dev->reg_mutex);
 204
 205         return ret;
 206 }
 207
 208 static inline int b53_read16(struct b53_device *dev, u8 page, u8 reg, u16 *val)
 209 {
 210         int ret;
 211
 212         mutex_lock(&dev->reg_mutex);
 213         ret = dev->ops->read16(dev, page, reg, val);
 214         mutex_unlock(&dev->reg_mutex);
 215
 216         return ret;
 217 }
 218
 219 static inline int b53_read32(struct b53_device *dev, u8 page, u8 reg, u32 *val)
 220 {
 221         int ret;
 222
 223         mutex_lock(&dev->reg_mutex);
 224         ret = dev->ops->read32(dev, page, reg, val);
 225         mutex_unlock(&dev->reg_mutex);
 226
 227         return ret;
 228 }
 229
 230 static inline int b53_read48(struct b53_device *dev, u8 page, u8 reg, u64 *val)
 231 {
 232         int ret;
 233
 234         mutex_lock(&dev->reg_mutex);
 235         ret = dev->ops->read48(dev, page, reg, val);
 236         mutex_unlock(&dev->reg_mutex);
 237
 238         return ret;
 239 }
 240
 241 static inline int b53_read64(struct b53_device *dev, u8 page, u8 reg, u64 *val)
 242 {
 243         int ret;
 244
 245         mutex_lock(&dev->reg_mutex);
 246         ret = dev->ops->read64(dev, page, reg, val);
 247         mutex_unlock(&dev->reg_mutex);
 248
 249         return ret;
 250 }
 251
 252 static inline int b53_write8(struct b53_device *dev, u8 page, u8 reg, u8 value)
 253 {
 254         int ret;
 255
 256         mutex_lock(&dev->reg_mutex);
 257         ret = dev->ops->write8(dev, page, reg, value);
 258         mutex_unlock(&dev->reg_mutex);
 259
 260         return ret;
 261 }
 262
 263 static inline int b53_write16(struct b53_device *dev, u8 page, u8 reg,
 264                               u16 value)
 265 {
 266         int ret;
 267
 268         mutex_lock(&dev->reg_mutex);
 269         ret = dev->ops->write16(dev, page, reg, value);
 270         mutex_unlock(&dev->reg_mutex);
 271
 272         return ret;
 273 }
 274
 275 static inline int b53_write32(struct b53_device *dev, u8 page, u8 reg,
 276                               u32 value)
 277 {
 278         int ret;
 279
 280         mutex_lock(&dev->reg_mutex);
 281         ret = dev->ops->write32(dev, page, reg, value);
 282         mutex_unlock(&dev->reg_mutex);
 283
 284         return ret;
 285 }
 286
 287 static inline int b53_write48(struct b53_device *dev, u8 page, u8 reg,
 288                               u64 value)
 289 {
 290         int ret;
 291
 292         mutex_lock(&dev->reg_mutex);
 293         ret = dev->ops->write48(dev, page, reg, value);
 294         mutex_unlock(&dev->reg_mutex);
 295
 296         return ret;
 297 }
 298
 299 static inline int b53_write64(struct b53_device *dev, u8 page, u8 reg,
 300                                u64 value)
 301 {
 302         int ret;
 303
 304         mutex_lock(&dev->reg_mutex);
 305         ret = dev->ops->write64(dev, page, reg, value);
 306         mutex_unlock(&dev->reg_mutex);
 307
 308         return ret;
 309 }
 310
 311 struct b53_arl_entry {
 312         u8 port;
 313         u8 mac[ETH_ALEN];
 314         u16 vid;
 315         u8 is_valid:1;
 316         u8 is_age:1;
 317         u8 is_static:1;
 318 };
 319
 320 static inline void b53_mac_from_u64(u64 src, u8 *dst)
 321 {
 322         unsigned int i;
 323
 324         for (i = 0; i < ETH_ALEN; i++)
 325                 dst[ETH_ALEN - 1 - i] = (src >> (8 * i)) & 0xff;
 326 }
 327
 328 static inline u64 b53_mac_to_u64(const u8 *src)
 329 {
 330         unsigned int i;
 331         u64 dst = 0;
 332
 333         for (i = 0; i < ETH_ALEN; i++)
 334                 dst |= (u64)src[ETH_ALEN - 1 - i] << (8 * i);
 335
 336         return dst;
 337 }
 338
 339 static inline void b53_arl_to_entry(struct b53_arl_entry *ent,
 340                                     u64 mac_vid, u32 fwd_entry)
 341 {
 342         memset(ent, 0, sizeof(*ent));
 343         ent->port = fwd_entry & ARLTBL_DATA_PORT_ID_MASK;
 344         ent->is_valid = !!(fwd_entry & ARLTBL_VALID);
 345         ent->is_age = !!(fwd_entry & ARLTBL_AGE);
 346         ent->is_static = !!(fwd_entry & ARLTBL_STATIC);
 347         b53_mac_from_u64(mac_vid, ent->mac);
 348         ent->vid = mac_vid >> ARLTBL_VID_S;
 349 }
 350
 351 static inline void b53_arl_from_entry(u64 *mac_vid, u32 *fwd_entry,
 352                                       const struct b53_arl_entry *ent)
 353 {
 354         *mac_vid = b53_mac_to_u64(ent->mac);
 355         *mac_vid |= (u64)(ent->vid & ARLTBL_VID_MASK) << ARLTBL_VID_S;
 356         *fwd_entry = ent->port & ARLTBL_DATA_PORT_ID_MASK;
 357         if (ent->is_valid)
 358                 *fwd_entry |= ARLTBL_VALID;
 359         if (ent->is_static)
 360                 *fwd_entry |= ARLTBL_STATIC;
 361         if (ent->is_age)
 362                 *fwd_entry |= ARLTBL_AGE;
 363 }
 364
 365 #ifdef CONFIG_BCM47XX
 366
 367 #include <linux/version.h>
 368 #include <linux/bcm47xx_nvram.h>
 369 #include <bcm47xx_board.h>
 370 static inline int b53_switch_get_reset_gpio(struct b53_device *dev)
 371 {
 372         enum bcm47xx_board board = bcm47xx_board_get();
 373
 374         switch (board) {
 375         case BCM47XX_BOARD_LINKSYS_WRT300NV11:
 376         case BCM47XX_BOARD_LINKSYS_WRT310NV1:
 377                 return 8;
 378         default:
 379                 return bcm47xx_nvram_gpio_pin("robo_reset");
 380         }
 381 }
 382 #else
 383 static inline int b53_switch_get_reset_gpio(struct b53_device *dev)
 384 {
 385         return -ENOENT;
 386 }
 387 #endif
 388 #endif