drivers/net/ethernet/mscc/ocelot_vcap.c

   1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
   2 /* Microsemi Ocelot Switch driver
   3  * Copyright (c) 2019 Microsemi Corporation
   4  */
   5
   6 #include <linux/iopoll.h>
   7 #include <linux/proc_fs.h>
   8
   9 #include <soc/mscc/ocelot_vcap.h>
  10 #include "ocelot_police.h"
  11 #include "ocelot_vcap.h"
  12
  13 #define ENTRY_WIDTH 32
  14
  15 enum vcap_sel {
  16         VCAP_SEL_ENTRY = 0x1,
  17         VCAP_SEL_ACTION = 0x2,
  18         VCAP_SEL_COUNTER = 0x4,
  19         VCAP_SEL_ALL = 0x7,
  20 };
  21
  22 enum vcap_cmd {
  23         VCAP_CMD_WRITE = 0, /* Copy from Cache to TCAM */
  24         VCAP_CMD_READ = 1, /* Copy from TCAM to Cache */
  25         VCAP_CMD_MOVE_UP = 2, /* Move <count> up */
  26         VCAP_CMD_MOVE_DOWN = 3, /* Move <count> down */
  27         VCAP_CMD_INITIALIZE = 4, /* Write all (from cache) */
  28 };
  29
  30 #define VCAP_ENTRY_WIDTH 12 /* Max entry width (32bit words) */
  31 #define VCAP_COUNTER_WIDTH 4 /* Max counter width (32bit words) */
  32
  33 struct vcap_data {
  34         u32 entry[VCAP_ENTRY_WIDTH]; /* ENTRY_DAT */
  35         u32 mask[VCAP_ENTRY_WIDTH]; /* MASK_DAT */
  36         u32 action[VCAP_ENTRY_WIDTH]; /* ACTION_DAT */
  37         u32 counter[VCAP_COUNTER_WIDTH]; /* CNT_DAT */
  38         u32 tg; /* TG_DAT */
  39         u32 type; /* Action type */
  40         u32 tg_sw; /* Current type-group */
  41         u32 cnt; /* Current counter */
  42         u32 key_offset; /* Current entry offset */
  43         u32 action_offset; /* Current action offset */
  44         u32 counter_offset; /* Current counter offset */
  45         u32 tg_value; /* Current type-group value */
  46         u32 tg_mask; /* Current type-group mask */
  47 };
  48
  49 static u32 vcap_read_update_ctrl(struct ocelot *ocelot,
  50                                  const struct vcap_props *vcap)
  51 {
  52         return ocelot_target_read(ocelot, vcap->target, VCAP_CORE_UPDATE_CTRL);
  53 }
  54
  55 static void vcap_cmd(struct ocelot *ocelot, const struct vcap_props *vcap,
  56                      u16 ix, int cmd, int sel)
  57 {
  58         u32 value = (VCAP_CORE_UPDATE_CTRL_UPDATE_CMD(cmd) |
  59                      VCAP_CORE_UPDATE_CTRL_UPDATE_ADDR(ix) |
  60                      VCAP_CORE_UPDATE_CTRL_UPDATE_SHOT);
  61
  62         if ((sel & VCAP_SEL_ENTRY) && ix >= vcap->entry_count)
  63                 return;
  64
  65         if (!(sel & VCAP_SEL_ENTRY))
  66                 value |= VCAP_CORE_UPDATE_CTRL_UPDATE_ENTRY_DIS;
  67
  68         if (!(sel & VCAP_SEL_ACTION))
  69                 value |= VCAP_CORE_UPDATE_CTRL_UPDATE_ACTION_DIS;
  70
  71         if (!(sel & VCAP_SEL_COUNTER))
  72                 value |= VCAP_CORE_UPDATE_CTRL_UPDATE_CNT_DIS;
  73
  74         ocelot_target_write(ocelot, vcap->target, value, VCAP_CORE_UPDATE_CTRL);
  75
  76         read_poll_timeout(vcap_read_update_ctrl, value,
  77                           (value & VCAP_CORE_UPDATE_CTRL_UPDATE_SHOT) == 0,
  78                           10, 100000, false, ocelot, vcap);
  79 }
  80
  81 /* Convert from 0-based row to VCAP entry row and run command */
  82 static void vcap_row_cmd(struct ocelot *ocelot, const struct vcap_props *vcap,
  83                          u32 row, int cmd, int sel)
  84 {
  85         vcap_cmd(ocelot, vcap, vcap->entry_count - row - 1, cmd, sel);
  86 }
  87
  88 static void vcap_entry2cache(struct ocelot *ocelot,
  89                              const struct vcap_props *vcap,
  90                              struct vcap_data *data)
  91 {
  92         u32 entry_words, i;
  93
  94         entry_words = DIV_ROUND_UP(vcap->entry_width, ENTRY_WIDTH);
  95
  96         for (i = 0; i < entry_words; i++) {
  97                 ocelot_target_write_rix(ocelot, vcap->target, data->entry[i],
  98                                         VCAP_CACHE_ENTRY_DAT, i);
  99                 ocelot_target_write_rix(ocelot, vcap->target, ~data->mask[i],
 100                                         VCAP_CACHE_MASK_DAT, i);
 101         }
 102         ocelot_target_write(ocelot, vcap->target, data->tg, VCAP_CACHE_TG_DAT);
 103 }
 104
 105 static void vcap_cache2entry(struct ocelot *ocelot,
 106                              const struct vcap_props *vcap,
 107                              struct vcap_data *data)
 108 {
 109         u32 entry_words, i;
 110
 111         entry_words = DIV_ROUND_UP(vcap->entry_width, ENTRY_WIDTH);
 112
 113         for (i = 0; i < entry_words; i++) {
 114                 data->entry[i] = ocelot_target_read_rix(ocelot, vcap->target,
 115                                                         VCAP_CACHE_ENTRY_DAT, i);
 116                 // Invert mask
 117                 data->mask[i] = ~ocelot_target_read_rix(ocelot, vcap->target,
 118                                                         VCAP_CACHE_MASK_DAT, i);
 119         }
 120         data->tg = ocelot_target_read(ocelot, vcap->target, VCAP_CACHE_TG_DAT);
 121 }
 122
 123 static void vcap_action2cache(struct ocelot *ocelot,
 124                               const struct vcap_props *vcap,
 125                               struct vcap_data *data)
 126 {
 127         u32 action_words, mask;
 128         int i, width;
 129
 130         /* Encode action type */
 131         width = vcap->action_type_width;
 132         if (width) {
 133                 mask = GENMASK(width, 0);
 134                 data->action[0] = ((data->action[0] & ~mask) | data->type);
 135         }
 136
 137         action_words = DIV_ROUND_UP(vcap->action_width, ENTRY_WIDTH);
 138
 139         for (i = 0; i < action_words; i++)
 140                 ocelot_target_write_rix(ocelot, vcap->target, data->action[i],
 141                                         VCAP_CACHE_ACTION_DAT, i);
 142
 143         for (i = 0; i < vcap->counter_words; i++)
 144                 ocelot_target_write_rix(ocelot, vcap->target, data->counter[i],
 145                                         VCAP_CACHE_CNT_DAT, i);
 146 }
 147
 148 static void vcap_cache2action(struct ocelot *ocelot,
 149                               const struct vcap_props *vcap,
 150                               struct vcap_data *data)
 151 {
 152         u32 action_words;
 153         int i, width;
 154
 155         action_words = DIV_ROUND_UP(vcap->action_width, ENTRY_WIDTH);
 156
 157         for (i = 0; i < action_words; i++)
 158                 data->action[i] = ocelot_target_read_rix(ocelot, vcap->target,
 159                                                          VCAP_CACHE_ACTION_DAT,
 160                                                          i);
 161
 162         for (i = 0; i < vcap->counter_words; i++)
 163                 data->counter[i] = ocelot_target_read_rix(ocelot, vcap->target,
 164                                                           VCAP_CACHE_CNT_DAT,
 165                                                           i);
 166
 167         /* Extract action type */
 168         width = vcap->action_type_width;
 169         data->type = (width ? (data->action[0] & GENMASK(width, 0)) : 0);
 170 }
 171
 172 /* Calculate offsets for entry */
 173 static void vcap_data_offset_get(const struct vcap_props *vcap,
 174                                  struct vcap_data *data, int ix)
 175 {
 176         int num_subwords_per_entry, num_subwords_per_action;
 177         int i, col, offset, num_entries_per_row, base;
 178         u32 width = vcap->tg_width;
 179
 180         switch (data->tg_sw) {
 181         case VCAP_TG_FULL:
 182                 num_entries_per_row = 1;
 183                 break;
 184         case VCAP_TG_HALF:
 185                 num_entries_per_row = 2;
 186                 break;
 187         case VCAP_TG_QUARTER:
 188                 num_entries_per_row = 4;
 189                 break;
 190         default:
 191                 return;
 192         }
 193
 194         col = (ix % num_entries_per_row);
 195         num_subwords_per_entry = (vcap->sw_count / num_entries_per_row);
 196         base = (vcap->sw_count - col * num_subwords_per_entry -
 197                 num_subwords_per_entry);
 198         data->tg_value = 0;
 199         data->tg_mask = 0;
 200         for (i = 0; i < num_subwords_per_entry; i++) {
 201                 offset = ((base + i) * width);
 202                 data->tg_value |= (data->tg_sw << offset);
 203                 data->tg_mask |= GENMASK(offset + width - 1, offset);
 204         }
 205
 206         /* Calculate key/action/counter offsets */
 207         col = (num_entries_per_row - col - 1);
 208         data->key_offset = (base * vcap->entry_width) / vcap->sw_count;
 209         data->counter_offset = (num_subwords_per_entry * col *
 210                                 vcap->counter_width);
 211         i = data->type;
 212         width = vcap->action_table[i].width;
 213         num_subwords_per_action = vcap->action_table[i].count;
 214         data->action_offset = ((num_subwords_per_action * col * width) /
 215                                 num_entries_per_row);
 216         data->action_offset += vcap->action_type_width;
 217 }
 218
 219 static void vcap_data_set(u32 *data, u32 offset, u32 len, u32 value)
 220 {
 221         u32 i, v, m;
 222
 223         for (i = 0; i < len; i++, offset++) {
 224                 v = data[offset / ENTRY_WIDTH];
 225                 m = (1 << (offset % ENTRY_WIDTH));
 226                 if (value & (1 << i))
 227                         v |= m;
 228                 else
 229                         v &= ~m;
 230                 data[offset / ENTRY_WIDTH] = v;
 231         }
 232 }
 233
 234 static u32 vcap_data_get(u32 *data, u32 offset, u32 len)
 235 {
 236         u32 i, v, m, value = 0;
 237
 238         for (i = 0; i < len; i++, offset++) {
 239                 v = data[offset / ENTRY_WIDTH];
 240                 m = (1 << (offset % ENTRY_WIDTH));
 241                 if (v & m)
 242                         value |= (1 << i);
 243         }
 244         return value;
 245 }
 246
 247 static void vcap_key_field_set(struct vcap_data *data, u32 offset, u32 width,
 248                                u32 value, u32 mask)
 249 {
 250         vcap_data_set(data->entry, offset + data->key_offset, width, value);
 251         vcap_data_set(data->mask, offset + data->key_offset, width, mask);
 252 }
 253
 254 static void vcap_key_set(const struct vcap_props *vcap, struct vcap_data *data,
 255                          int field, u32 value, u32 mask)
 256 {
 257         u32 offset = vcap->keys[field].offset;
 258         u32 length = vcap->keys[field].length;
 259
 260         vcap_key_field_set(data, offset, length, value, mask);
 261 }
 262
 263 static void vcap_key_bytes_set(const struct vcap_props *vcap,
 264                                struct vcap_data *data, int field,
 265                                u8 *val, u8 *msk)
 266 {
 267         u32 offset = vcap->keys[field].offset;
 268         u32 count  = vcap->keys[field].length;
 269         u32 i, j, n = 0, value = 0, mask = 0;
 270
 271         WARN_ON(count % 8);
 272
 273         /* Data wider than 32 bits are split up in chunks of maximum 32 bits.
 274          * The 32 LSB of the data are written to the 32 MSB of the TCAM.
 275          */
 276         offset += count;
 277         count /= 8;
 278
 279         for (i = 0; i < count; i++) {
 280                 j = (count - i - 1);
 281                 value += (val[j] << n);
 282                 mask += (msk[j] << n);
 283                 n += 8;
 284                 if (n == ENTRY_WIDTH || (i + 1) == count) {
 285                         offset -= n;
 286                         vcap_key_field_set(data, offset, n, value, mask);
 287                         n = 0;
 288                         value = 0;
 289                         mask = 0;
 290                 }
 291         }
 292 }
 293
 294 static void vcap_key_l4_port_set(const struct vcap_props *vcap,
 295                                  struct vcap_data *data, int field,
 296                                  struct ocelot_vcap_udp_tcp *port)
 297 {
 298         u32 offset = vcap->keys[field].offset;
 299         u32 length = vcap->keys[field].length;
 300
 301         WARN_ON(length != 16);
 302
 303         vcap_key_field_set(data, offset, length, port->value, port->mask);
 304 }
 305
 306 static void vcap_key_bit_set(const struct vcap_props *vcap,
 307                              struct vcap_data *data, int field,
 308                              enum ocelot_vcap_bit val)
 309 {
 310         u32 value = (val == OCELOT_VCAP_BIT_1 ? 1 : 0);
 311         u32 msk = (val == OCELOT_VCAP_BIT_ANY ? 0 : 1);
 312         u32 offset = vcap->keys[field].offset;
 313         u32 length = vcap->keys[field].length;
 314
 315         WARN_ON(length != 1);
 316
 317         vcap_key_field_set(data, offset, length, value, msk);
 318 }
 319
 320 static void vcap_action_set(const struct vcap_props *vcap,
 321                             struct vcap_data *data, int field, u32 value)
 322 {
 323         int offset = vcap->actions[field].offset;
 324         int length = vcap->actions[field].length;
 325
 326         vcap_data_set(data->action, offset + data->action_offset, length,
 327                       value);
 328 }
 329
 330 static void is2_action_set(struct ocelot *ocelot, struct vcap_data *data,
 331                            struct ocelot_vcap_filter *filter)
 332 {
 333         const struct vcap_props *vcap = &ocelot->vcap[VCAP_IS2];
 334         struct ocelot_vcap_action *a = &filter->action;
 335
 336         vcap_action_set(vcap, data, VCAP_IS2_ACT_MASK_MODE, a->mask_mode);
 337         vcap_action_set(vcap, data, VCAP_IS2_ACT_PORT_MASK, a->port_mask);
 338         vcap_action_set(vcap, data, VCAP_IS2_ACT_POLICE_ENA, a->police_ena);
 339         vcap_action_set(vcap, data, VCAP_IS2_ACT_POLICE_IDX, a->pol_ix);
 340         vcap_action_set(vcap, data, VCAP_IS2_ACT_CPU_QU_NUM, a->cpu_qu_num);
 341         vcap_action_set(vcap, data, VCAP_IS2_ACT_CPU_COPY_ENA, a->cpu_copy_ena);
 342 }
 343
 344 static void is2_entry_set(struct ocelot *ocelot, int ix,
 345                           struct ocelot_vcap_filter *filter)
 346 {
 347         const struct vcap_props *vcap = &ocelot->vcap[VCAP_IS2];
 348         struct ocelot_vcap_key_vlan *tag = &filter->vlan;
 349         u32 val, msk, type, type_mask = 0xf, i, count;
 350         struct ocelot_vcap_u64 payload;
 351         struct vcap_data data;
 352         int row = (ix / 2);
 353
 354         memset(&payload, 0, sizeof(payload));
 355         memset(&data, 0, sizeof(data));
 356
 357         /* Read row */
 358         vcap_row_cmd(ocelot, vcap, row, VCAP_CMD_READ, VCAP_SEL_ALL);
 359         vcap_cache2entry(ocelot, vcap, &data);
 360         vcap_cache2action(ocelot, vcap, &data);
 361
 362         data.tg_sw = VCAP_TG_HALF;
 363         vcap_data_offset_get(vcap, &data, ix);
 364         data.tg = (data.tg & ~data.tg_mask);
 365         if (filter->prio != 0)
 366                 data.tg |= data.tg_value;
 367
 368         data.type = IS2_ACTION_TYPE_NORMAL;
 369
 370         vcap_key_set(vcap, &data, VCAP_IS2_HK_PAG, filter->pag, 0xff);
 371         vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_FIRST,
 372                          (filter->lookup == 0) ? OCELOT_VCAP_BIT_1 :
 373                          OCELOT_VCAP_BIT_0);
 374         vcap_key_set(vcap, &data, VCAP_IS2_HK_IGR_PORT_MASK, 0,
 375                      ~filter->ingress_port_mask);
 376         vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_FIRST, OCELOT_VCAP_BIT_ANY);
 377         vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_HOST_MATCH,
 378                          OCELOT_VCAP_BIT_ANY);
 379         vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_L2_MC, filter->dmac_mc);
 380         vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_L2_BC, filter->dmac_bc);
 381         vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_VLAN_TAGGED, tag->tagged);
 382         vcap_key_set(vcap, &data, VCAP_IS2_HK_VID,
 383                      tag->vid.value, tag->vid.mask);
 384         vcap_key_set(vcap, &data, VCAP_IS2_HK_PCP,
 385                      tag->pcp.value[0], tag->pcp.mask[0]);
 386         vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_DEI, tag->dei);
 387
 388         switch (filter->key_type) {
 389         case OCELOT_VCAP_KEY_ETYPE: {
 390                 struct ocelot_vcap_key_etype *etype = &filter->key.etype;
 391
 392                 type = IS2_TYPE_ETYPE;
 393                 vcap_key_bytes_set(vcap, &data, VCAP_IS2_HK_L2_DMAC,
 394                                    etype->dmac.value, etype->dmac.mask);
 395                 vcap_key_bytes_set(vcap, &data, VCAP_IS2_HK_L2_SMAC,
 396                                    etype->smac.value, etype->smac.mask);
 397                 vcap_key_bytes_set(vcap, &data, VCAP_IS2_HK_MAC_ETYPE_ETYPE,
 398                                    etype->etype.value, etype->etype.mask);
 399                 /* Clear unused bits */
 400                 vcap_key_set(vcap, &data, VCAP_IS2_HK_MAC_ETYPE_L2_PAYLOAD0,
 401                              0, 0);
 402                 vcap_key_set(vcap, &data, VCAP_IS2_HK_MAC_ETYPE_L2_PAYLOAD1,
 403                              0, 0);
 404                 vcap_key_set(vcap, &data, VCAP_IS2_HK_MAC_ETYPE_L2_PAYLOAD2,
 405                              0, 0);
 406                 vcap_key_bytes_set(vcap, &data,
 407                                    VCAP_IS2_HK_MAC_ETYPE_L2_PAYLOAD0,
 408                                    etype->data.value, etype->data.mask);
 409                 break;
 410         }
 411         case OCELOT_VCAP_KEY_LLC: {
 412                 struct ocelot_vcap_key_llc *llc = &filter->key.llc;
 413
 414                 type = IS2_TYPE_LLC;
 415                 vcap_key_bytes_set(vcap, &data, VCAP_IS2_HK_L2_DMAC,
 416                                    llc->dmac.value, llc->dmac.mask);
 417                 vcap_key_bytes_set(vcap, &data, VCAP_IS2_HK_L2_SMAC,
 418                                    llc->smac.value, llc->smac.mask);
 419                 for (i = 0; i < 4; i++) {
 420                         payload.value[i] = llc->llc.value[i];
 421                         payload.mask[i] = llc->llc.mask[i];
 422                 }
 423                 vcap_key_bytes_set(vcap, &data, VCAP_IS2_HK_MAC_LLC_L2_LLC,
 424                                    payload.value, payload.mask);
 425                 break;
 426         }
 427         case OCELOT_VCAP_KEY_SNAP: {
 428                 struct ocelot_vcap_key_snap *snap = &filter->key.snap;
 429
 430                 type = IS2_TYPE_SNAP;
 431                 vcap_key_bytes_set(vcap, &data, VCAP_IS2_HK_L2_DMAC,
 432                                    snap->dmac.value, snap->dmac.mask);
 433                 vcap_key_bytes_set(vcap, &data, VCAP_IS2_HK_L2_SMAC,
 434                                    snap->smac.value, snap->smac.mask);
 435                 vcap_key_bytes_set(vcap, &data, VCAP_IS2_HK_MAC_SNAP_L2_SNAP,
 436                                    filter->key.snap.snap.value,
 437                                    filter->key.snap.snap.mask);
 438                 break;
 439         }
 440         case OCELOT_VCAP_KEY_ARP: {
 441                 struct ocelot_vcap_key_arp *arp = &filter->key.arp;
 442
 443                 type = IS2_TYPE_ARP;
 444                 vcap_key_bytes_set(vcap, &data, VCAP_IS2_HK_MAC_ARP_SMAC,
 445                                    arp->smac.value, arp->smac.mask);
 446                 vcap_key_bit_set(vcap, &data,
 447                                  VCAP_IS2_HK_MAC_ARP_ADDR_SPACE_OK,
 448                                  arp->ethernet);
 449                 vcap_key_bit_set(vcap, &data,
 450                                  VCAP_IS2_HK_MAC_ARP_PROTO_SPACE_OK,
 451                                  arp->ip);
 452                 vcap_key_bit_set(vcap, &data,
 453                                  VCAP_IS2_HK_MAC_ARP_LEN_OK,
 454                                  arp->length);
 455                 vcap_key_bit_set(vcap, &data,
 456                                  VCAP_IS2_HK_MAC_ARP_TARGET_MATCH,
 457                                  arp->dmac_match);
 458                 vcap_key_bit_set(vcap, &data,
 459                                  VCAP_IS2_HK_MAC_ARP_SENDER_MATCH,
 460                                  arp->smac_match);
 461                 vcap_key_bit_set(vcap, &data,
 462                                  VCAP_IS2_HK_MAC_ARP_OPCODE_UNKNOWN,
 463                                  arp->unknown);
 464
 465                 /* OPCODE is inverse, bit 0 is reply flag, bit 1 is RARP flag */
 466                 val = ((arp->req == OCELOT_VCAP_BIT_0 ? 1 : 0) |
 467                        (arp->arp == OCELOT_VCAP_BIT_0 ? 2 : 0));
 468                 msk = ((arp->req == OCELOT_VCAP_BIT_ANY ? 0 : 1) |
 469                        (arp->arp == OCELOT_VCAP_BIT_ANY ? 0 : 2));
 470                 vcap_key_set(vcap, &data, VCAP_IS2_HK_MAC_ARP_OPCODE,
 471                              val, msk);
 472                 vcap_key_bytes_set(vcap, &data,
 473                                    VCAP_IS2_HK_MAC_ARP_L3_IP4_DIP,
 474                                    arp->dip.value.addr, arp->dip.mask.addr);
 475                 vcap_key_bytes_set(vcap, &data,
 476                                    VCAP_IS2_HK_MAC_ARP_L3_IP4_SIP,
 477                                    arp->sip.value.addr, arp->sip.mask.addr);
 478                 vcap_key_set(vcap, &data, VCAP_IS2_HK_MAC_ARP_DIP_EQ_SIP,
 479                              0, 0);
 480                 break;
 481         }
 482         case OCELOT_VCAP_KEY_IPV4:
 483         case OCELOT_VCAP_KEY_IPV6: {
 484                 enum ocelot_vcap_bit sip_eq_dip, sport_eq_dport, seq_zero, tcp;
 485                 enum ocelot_vcap_bit ttl, fragment, options, tcp_ack, tcp_urg;
 486                 enum ocelot_vcap_bit tcp_fin, tcp_syn, tcp_rst, tcp_psh;
 487                 struct ocelot_vcap_key_ipv4 *ipv4 = NULL;
 488                 struct ocelot_vcap_key_ipv6 *ipv6 = NULL;
 489                 struct ocelot_vcap_udp_tcp *sport, *dport;
 490                 struct ocelot_vcap_ipv4 sip, dip;
 491                 struct ocelot_vcap_u8 proto, ds;
 492                 struct ocelot_vcap_u48 *ip_data;
 493
 494                 if (filter->key_type == OCELOT_VCAP_KEY_IPV4) {
 495                         ipv4 = &filter->key.ipv4;
 496                         ttl = ipv4->ttl;
 497                         fragment = ipv4->fragment;
 498                         options = ipv4->options;
 499                         proto = ipv4->proto;
 500                         ds = ipv4->ds;
 501                         ip_data = &ipv4->data;
 502                         sip = ipv4->sip;
 503                         dip = ipv4->dip;
 504                         sport = &ipv4->sport;
 505                         dport = &ipv4->dport;
 506                         tcp_fin = ipv4->tcp_fin;
 507                         tcp_syn = ipv4->tcp_syn;
 508                         tcp_rst = ipv4->tcp_rst;
 509                         tcp_psh = ipv4->tcp_psh;
 510                         tcp_ack = ipv4->tcp_ack;
 511                         tcp_urg = ipv4->tcp_urg;
 512                         sip_eq_dip = ipv4->sip_eq_dip;
 513                         sport_eq_dport = ipv4->sport_eq_dport;
 514                         seq_zero = ipv4->seq_zero;
 515                 } else {
 516                         ipv6 = &filter->key.ipv6;
 517                         ttl = ipv6->ttl;
 518                         fragment = OCELOT_VCAP_BIT_ANY;
 519                         options = OCELOT_VCAP_BIT_ANY;
 520                         proto = ipv6->proto;
 521                         ds = ipv6->ds;
 522                         ip_data = &ipv6->data;
 523                         for (i = 0; i < 8; i++) {
 524                                 val = ipv6->sip.value[i + 8];
 525                                 msk = ipv6->sip.mask[i + 8];
 526                                 if (i < 4) {
 527                                         dip.value.addr[i] = val;
 528                                         dip.mask.addr[i] = msk;
 529                                 } else {
 530                                         sip.value.addr[i - 4] = val;
 531                                         sip.mask.addr[i - 4] = msk;
 532                                 }
 533                         }
 534                         sport = &ipv6->sport;
 535                         dport = &ipv6->dport;
 536                         tcp_fin = ipv6->tcp_fin;
 537                         tcp_syn = ipv6->tcp_syn;
 538                         tcp_rst = ipv6->tcp_rst;
 539                         tcp_psh = ipv6->tcp_psh;
 540                         tcp_ack = ipv6->tcp_ack;
 541                         tcp_urg = ipv6->tcp_urg;
 542                         sip_eq_dip = ipv6->sip_eq_dip;
 543                         sport_eq_dport = ipv6->sport_eq_dport;
 544                         seq_zero = ipv6->seq_zero;
 545                 }
 546
 547                 vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_IP4,
 548                                  ipv4 ? OCELOT_VCAP_BIT_1 : OCELOT_VCAP_BIT_0);
 549                 vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_L3_FRAGMENT,
 550                                  fragment);
 551                 vcap_key_set(vcap, &data, VCAP_IS2_HK_L3_FRAG_OFS_GT0, 0, 0);
 552                 vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_L3_OPTIONS,
 553                                  options);
 554                 vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_IP4_L3_TTL_GT0,
 555                                  ttl);
 556                 vcap_key_bytes_set(vcap, &data, VCAP_IS2_HK_L3_TOS,
 557                                    ds.value, ds.mask);
 558                 vcap_key_bytes_set(vcap, &data, VCAP_IS2_HK_L3_IP4_DIP,
 559                                    dip.value.addr, dip.mask.addr);
 560                 vcap_key_bytes_set(vcap, &data, VCAP_IS2_HK_L3_IP4_SIP,
 561                                    sip.value.addr, sip.mask.addr);
 562                 vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_DIP_EQ_SIP,
 563                                  sip_eq_dip);
 564                 val = proto.value[0];
 565                 msk = proto.mask[0];
 566                 type = IS2_TYPE_IP_UDP_TCP;
 567                 if (msk == 0xff && (val == 6 || val == 17)) {
 568                         /* UDP/TCP protocol match */
 569                         tcp = (val == 6 ?
 570                                OCELOT_VCAP_BIT_1 : OCELOT_VCAP_BIT_0);
 571                         vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_TCP, tcp);
 572                         vcap_key_l4_port_set(vcap, &data,
 573                                              VCAP_IS2_HK_L4_DPORT, dport);
 574                         vcap_key_l4_port_set(vcap, &data,
 575                                              VCAP_IS2_HK_L4_SPORT, sport);
 576                         vcap_key_set(vcap, &data, VCAP_IS2_HK_L4_RNG, 0, 0);
 577                         vcap_key_bit_set(vcap, &data,
 578                                          VCAP_IS2_HK_L4_SPORT_EQ_DPORT,
 579                                          sport_eq_dport);
 580                         vcap_key_bit_set(vcap, &data,
 581                                          VCAP_IS2_HK_L4_SEQUENCE_EQ0,
 582                                          seq_zero);
 583                         vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_L4_FIN,
 584                                          tcp_fin);
 585                         vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_L4_SYN,
 586                                          tcp_syn);
 587                         vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_L4_RST,
 588                                          tcp_rst);
 589                         vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_L4_PSH,
 590                                          tcp_psh);
 591                         vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_L4_ACK,
 592                                          tcp_ack);
 593                         vcap_key_bit_set(vcap, &data, VCAP_IS2_HK_L4_URG,
 594                                          tcp_urg);
 595                         vcap_key_set(vcap, &data, VCAP_IS2_HK_L4_1588_DOM,
 596                                      0, 0);
 597                         vcap_key_set(vcap, &data, VCAP_IS2_HK_L4_1588_VER,
 598                                      0, 0);
 599                 } else {
 600                         if (msk == 0) {
 601                                 /* Any IP protocol match */
 602                                 type_mask = IS2_TYPE_MASK_IP_ANY;
 603                         } else {
 604                                 /* Non-UDP/TCP protocol match */
 605                                 type = IS2_TYPE_IP_OTHER;
 606                                 for (i = 0; i < 6; i++) {
 607                                         payload.value[i] = ip_data->value[i];
 608                                         payload.mask[i] = ip_data->mask[i];
 609                                 }
 610                         }
 611                         vcap_key_bytes_set(vcap, &data,
 612                                            VCAP_IS2_HK_IP4_L3_PROTO,
 613                                            proto.value, proto.mask);
 614                         vcap_key_bytes_set(vcap, &data,
 615                                            VCAP_IS2_HK_L3_PAYLOAD,
 616                                            payload.value, payload.mask);
 617                 }
 618                 break;
 619         }
 620         case OCELOT_VCAP_KEY_ANY:
 621         default:
 622                 type = 0;
 623                 type_mask = 0;
 624                 count = vcap->entry_width / 2;
 625                 /* Iterate over the non-common part of the key and
 626                  * clear entry data
 627                  */
 628                 for (i = vcap->keys[VCAP_IS2_HK_L2_DMAC].offset;
 629                      i < count; i += ENTRY_WIDTH) {
 630                         vcap_key_field_set(&data, i, min(32u, count - i), 0, 0);
 631                 }
 632                 break;
 633         }
 634
 635         vcap_key_set(vcap, &data, VCAP_IS2_TYPE, type, type_mask);
 636         is2_action_set(ocelot, &data, filter);
 637         vcap_data_set(data.counter, data.counter_offset,
 638                       vcap->counter_width, filter->stats.pkts);
 639
 640         /* Write row */
 641         vcap_entry2cache(ocelot, vcap, &data);
 642         vcap_action2cache(ocelot, vcap, &data);
 643         vcap_row_cmd(ocelot, vcap, row, VCAP_CMD_WRITE, VCAP_SEL_ALL);
 644 }
 645
 646 static void is1_action_set(struct ocelot *ocelot, struct vcap_data *data,
 647                            const struct ocelot_vcap_filter *filter)
 648 {
 649         const struct vcap_props *vcap = &ocelot->vcap[VCAP_IS1];
 650         const struct ocelot_vcap_action *a = &filter->action;
 651
 652         vcap_action_set(vcap, data, VCAP_IS1_ACT_VID_REPLACE_ENA,
 653                         a->vid_replace_ena);
 654         vcap_action_set(vcap, data, VCAP_IS1_ACT_VID_ADD_VAL, a->vid);
 655         vcap_action_set(vcap, data, VCAP_IS1_ACT_VLAN_POP_CNT_ENA,
 656                         a->vlan_pop_cnt_ena);
 657         vcap_action_set(vcap, data, VCAP_IS1_ACT_VLAN_POP_CNT,
 658                         a->vlan_pop_cnt);
 659         vcap_action_set(vcap, data, VCAP_IS1_ACT_PCP_DEI_ENA, a->pcp_dei_ena);
 660         vcap_action_set(vcap, data, VCAP_IS1_ACT_PCP_VAL, a->pcp);
 661         vcap_action_set(vcap, data, VCAP_IS1_ACT_DEI_VAL, a->dei);
 662         vcap_action_set(vcap, data, VCAP_IS1_ACT_QOS_ENA, a->qos_ena);
 663         vcap_action_set(vcap, data, VCAP_IS1_ACT_QOS_VAL, a->qos_val);
 664         vcap_action_set(vcap, data, VCAP_IS1_ACT_PAG_OVERRIDE_MASK,
 665                         a->pag_override_mask);
 666         vcap_action_set(vcap, data, VCAP_IS1_ACT_PAG_VAL, a->pag_val);
 667 }
 668
 669 static void is1_entry_set(struct ocelot *ocelot, int ix,
 670                           struct ocelot_vcap_filter *filter)
 671 {
 672         const struct vcap_props *vcap = &ocelot->vcap[VCAP_IS1];
 673         struct ocelot_vcap_key_vlan *tag = &filter->vlan;
 674         struct ocelot_vcap_u64 payload;
 675         struct vcap_data data;
 676         int row = ix / 2;
 677         u32 type;
 678
 679         memset(&payload, 0, sizeof(payload));
 680         memset(&data, 0, sizeof(data));
 681
 682         /* Read row */
 683         vcap_row_cmd(ocelot, vcap, row, VCAP_CMD_READ, VCAP_SEL_ALL);
 684         vcap_cache2entry(ocelot, vcap, &data);
 685         vcap_cache2action(ocelot, vcap, &data);
 686
 687         data.tg_sw = VCAP_TG_HALF;
 688         data.type = IS1_ACTION_TYPE_NORMAL;
 689         vcap_data_offset_get(vcap, &data, ix);
 690         data.tg = (data.tg & ~data.tg_mask);
 691         if (filter->prio != 0)
 692                 data.tg |= data.tg_value;
 693
 694         vcap_key_set(vcap, &data, VCAP_IS1_HK_LOOKUP, filter->lookup, 0x3);
 695         vcap_key_set(vcap, &data, VCAP_IS1_HK_IGR_PORT_MASK, 0,
 696                      ~filter->ingress_port_mask);
 697         vcap_key_bit_set(vcap, &data, VCAP_IS1_HK_L2_MC, filter->dmac_mc);
 698         vcap_key_bit_set(vcap, &data, VCAP_IS1_HK_L2_BC, filter->dmac_bc);
 699         vcap_key_bit_set(vcap, &data, VCAP_IS1_HK_VLAN_TAGGED, tag->tagged);
 700         vcap_key_set(vcap, &data, VCAP_IS1_HK_VID,
 701                      tag->vid.value, tag->vid.mask);
 702         vcap_key_set(vcap, &data, VCAP_IS1_HK_PCP,
 703                      tag->pcp.value[0], tag->pcp.mask[0]);
 704         type = IS1_TYPE_S1_NORMAL;
 705
 706         switch (filter->key_type) {
 707         case OCELOT_VCAP_KEY_ETYPE: {
 708                 struct ocelot_vcap_key_etype *etype = &filter->key.etype;
 709
 710                 vcap_key_bytes_set(vcap, &data, VCAP_IS1_HK_L2_SMAC,
 711                                    etype->smac.value, etype->smac.mask);
 712                 vcap_key_bytes_set(vcap, &data, VCAP_IS1_HK_ETYPE,
 713                                    etype->etype.value, etype->etype.mask);
 714                 break;
 715         }
 716         case OCELOT_VCAP_KEY_IPV4: {
 717                 struct ocelot_vcap_key_ipv4 *ipv4 = &filter->key.ipv4;
 718                 struct ocelot_vcap_udp_tcp *sport = &ipv4->sport;
 719                 struct ocelot_vcap_udp_tcp *dport = &ipv4->dport;
 720                 enum ocelot_vcap_bit tcp_udp = OCELOT_VCAP_BIT_0;
 721                 struct ocelot_vcap_u8 proto = ipv4->proto;
 722                 struct ocelot_vcap_ipv4 sip = ipv4->sip;
 723                 u32 val, msk;
 724
 725                 vcap_key_bit_set(vcap, &data, VCAP_IS1_HK_IP_SNAP,
 726                                  OCELOT_VCAP_BIT_1);
 727                 vcap_key_bit_set(vcap, &data, VCAP_IS1_HK_IP4,
 728                                  OCELOT_VCAP_BIT_1);
 729                 vcap_key_bit_set(vcap, &data, VCAP_IS1_HK_ETYPE_LEN,
 730                                  OCELOT_VCAP_BIT_1);
 731                 vcap_key_bytes_set(vcap, &data, VCAP_IS1_HK_L3_IP4_SIP,
 732                                    sip.value.addr, sip.mask.addr);
 733
 734                 val = proto.value[0];
 735                 msk = proto.mask[0];
 736
 737                 if ((val == NEXTHDR_TCP || val == NEXTHDR_UDP) && msk == 0xff)
 738                         tcp_udp = OCELOT_VCAP_BIT_1;
 739                 vcap_key_bit_set(vcap, &data, VCAP_IS1_HK_TCP_UDP, tcp_udp);
 740
 741                 if (tcp_udp) {
 742                         enum ocelot_vcap_bit tcp = OCELOT_VCAP_BIT_0;
 743
 744                         if (val == NEXTHDR_TCP)
 745                                 tcp = OCELOT_VCAP_BIT_1;
 746
 747                         vcap_key_bit_set(vcap, &data, VCAP_IS1_HK_TCP, tcp);
 748                         vcap_key_l4_port_set(vcap, &data, VCAP_IS1_HK_L4_SPORT,
 749                                              sport);
 750                         /* Overloaded field */
 751                         vcap_key_l4_port_set(vcap, &data, VCAP_IS1_HK_ETYPE,
 752                                              dport);
 753                 } else {
 754                         /* IPv4 "other" frame */
 755                         struct ocelot_vcap_u16 etype = {0};
 756
 757                         /* Overloaded field */
 758                         etype.value[0] = proto.value[0];
 759                         etype.mask[0] = proto.mask[0];
 760
 761                         vcap_key_bytes_set(vcap, &data, VCAP_IS1_HK_ETYPE,
 762                                            etype.value, etype.mask);
 763                 }
 764         }
 765         default:
 766                 break;
 767         }
 768         vcap_key_bit_set(vcap, &data, VCAP_IS1_HK_TYPE,
 769                          type ? OCELOT_VCAP_BIT_1 : OCELOT_VCAP_BIT_0);
 770
 771         is1_action_set(ocelot, &data, filter);
 772         vcap_data_set(data.counter, data.counter_offset,
 773                       vcap->counter_width, filter->stats.pkts);
 774
 775         /* Write row */
 776         vcap_entry2cache(ocelot, vcap, &data);
 777         vcap_action2cache(ocelot, vcap, &data);
 778         vcap_row_cmd(ocelot, vcap, row, VCAP_CMD_WRITE, VCAP_SEL_ALL);
 779 }
 780
 781 static void es0_action_set(struct ocelot *ocelot, struct vcap_data *data,
 782                            const struct ocelot_vcap_filter *filter)
 783 {
 784         const struct vcap_props *vcap = &ocelot->vcap[VCAP_ES0];
 785         const struct ocelot_vcap_action *a = &filter->action;
 786
 787         vcap_action_set(vcap, data, VCAP_ES0_ACT_PUSH_OUTER_TAG,
 788                         a->push_outer_tag);
 789         vcap_action_set(vcap, data, VCAP_ES0_ACT_PUSH_INNER_TAG,
 790                         a->push_inner_tag);
 791         vcap_action_set(vcap, data, VCAP_ES0_ACT_TAG_A_TPID_SEL,
 792                         a->tag_a_tpid_sel);
 793         vcap_action_set(vcap, data, VCAP_ES0_ACT_TAG_A_VID_SEL,
 794                         a->tag_a_vid_sel);
 795         vcap_action_set(vcap, data, VCAP_ES0_ACT_TAG_A_PCP_SEL,
 796                         a->tag_a_pcp_sel);
 797         vcap_action_set(vcap, data, VCAP_ES0_ACT_VID_A_VAL, a->vid_a_val);
 798         vcap_action_set(vcap, data, VCAP_ES0_ACT_PCP_A_VAL, a->pcp_a_val);
 799         vcap_action_set(vcap, data, VCAP_ES0_ACT_TAG_B_TPID_SEL,
 800                         a->tag_b_tpid_sel);
 801         vcap_action_set(vcap, data, VCAP_ES0_ACT_TAG_B_VID_SEL,
 802                         a->tag_b_vid_sel);
 803         vcap_action_set(vcap, data, VCAP_ES0_ACT_TAG_B_PCP_SEL,
 804                         a->tag_b_pcp_sel);
 805         vcap_action_set(vcap, data, VCAP_ES0_ACT_VID_B_VAL, a->vid_b_val);
 806         vcap_action_set(vcap, data, VCAP_ES0_ACT_PCP_B_VAL, a->pcp_b_val);
 807 }
 808
 809 static void es0_entry_set(struct ocelot *ocelot, int ix,
 810                           struct ocelot_vcap_filter *filter)
 811 {
 812         const struct vcap_props *vcap = &ocelot->vcap[VCAP_ES0];
 813         struct ocelot_vcap_key_vlan *tag = &filter->vlan;
 814         struct ocelot_vcap_u64 payload;
 815         struct vcap_data data;
 816         int row = ix;
 817
 818         memset(&payload, 0, sizeof(payload));
 819         memset(&data, 0, sizeof(data));
 820
 821         /* Read row */
 822         vcap_row_cmd(ocelot, vcap, row, VCAP_CMD_READ, VCAP_SEL_ALL);
 823         vcap_cache2entry(ocelot, vcap, &data);
 824         vcap_cache2action(ocelot, vcap, &data);
 825
 826         data.tg_sw = VCAP_TG_FULL;
 827         data.type = ES0_ACTION_TYPE_NORMAL;
 828         vcap_data_offset_get(vcap, &data, ix);
 829         data.tg = (data.tg & ~data.tg_mask);
 830         if (filter->prio != 0)
 831                 data.tg |= data.tg_value;
 832
 833         vcap_key_set(vcap, &data, VCAP_ES0_IGR_PORT, filter->ingress_port.value,
 834                      filter->ingress_port.mask);
 835         vcap_key_set(vcap, &data, VCAP_ES0_EGR_PORT, filter->egress_port.value,
 836                      filter->egress_port.mask);
 837         vcap_key_bit_set(vcap, &data, VCAP_ES0_L2_MC, filter->dmac_mc);
 838         vcap_key_bit_set(vcap, &data, VCAP_ES0_L2_BC, filter->dmac_bc);
 839         vcap_key_set(vcap, &data, VCAP_ES0_VID,
 840                      tag->vid.value, tag->vid.mask);
 841         vcap_key_set(vcap, &data, VCAP_ES0_PCP,
 842                      tag->pcp.value[0], tag->pcp.mask[0]);
 843
 844         es0_action_set(ocelot, &data, filter);
 845         vcap_data_set(data.counter, data.counter_offset,
 846                       vcap->counter_width, filter->stats.pkts);
 847
 848         /* Write row */
 849         vcap_entry2cache(ocelot, vcap, &data);
 850         vcap_action2cache(ocelot, vcap, &data);
 851         vcap_row_cmd(ocelot, vcap, row, VCAP_CMD_WRITE, VCAP_SEL_ALL);
 852 }
 853
 854 static void vcap_entry_get(struct ocelot *ocelot, int ix,
 855                            struct ocelot_vcap_filter *filter)
 856 {
 857         const struct vcap_props *vcap = &ocelot->vcap[filter->block_id];
 858         struct vcap_data data;
 859         int row, count;
 860         u32 cnt;
 861
 862         if (filter->block_id == VCAP_ES0)
 863                 data.tg_sw = VCAP_TG_FULL;
 864         else
 865                 data.tg_sw = VCAP_TG_HALF;
 866
 867         count = (1 << (data.tg_sw - 1));
 868         row = (ix / count);
 869         vcap_row_cmd(ocelot, vcap, row, VCAP_CMD_READ, VCAP_SEL_COUNTER);
 870         vcap_cache2action(ocelot, vcap, &data);
 871         vcap_data_offset_get(vcap, &data, ix);
 872         cnt = vcap_data_get(data.counter, data.counter_offset,
 873                             vcap->counter_width);
 874
 875         filter->stats.pkts = cnt;
 876 }
 877
 878 static void vcap_entry_set(struct ocelot *ocelot, int ix,
 879                            struct ocelot_vcap_filter *filter)
 880 {
 881         if (filter->block_id == VCAP_IS1)
 882                 return is1_entry_set(ocelot, ix, filter);
 883         if (filter->block_id == VCAP_IS2)
 884                 return is2_entry_set(ocelot, ix, filter);
 885         if (filter->block_id == VCAP_ES0)
 886                 return es0_entry_set(ocelot, ix, filter);
 887 }
 888
 889 static int ocelot_vcap_policer_add(struct ocelot *ocelot, u32 pol_ix,
 890                                    struct ocelot_policer *pol)
 891 {
 892         struct qos_policer_conf pp = { 0 };
 893
 894         if (!pol)
 895                 return -EINVAL;
 896
 897         pp.mode = MSCC_QOS_RATE_MODE_DATA;
 898         pp.pir = pol->rate;
 899         pp.pbs = pol->burst;
 900
 901         return qos_policer_conf_set(ocelot, 0, pol_ix, &pp);
 902 }
 903
 904 static void ocelot_vcap_policer_del(struct ocelot *ocelot,
 905                                     struct ocelot_vcap_block *block,
 906                                     u32 pol_ix)
 907 {
 908         struct ocelot_vcap_filter *filter;
 909         struct qos_policer_conf pp = {0};
 910         int index = -1;
 911
 912         if (pol_ix < block->pol_lpr)
 913                 return;
 914
 915         list_for_each_entry(filter, &block->rules, list) {
 916                 index++;
 917                 if (filter->block_id == VCAP_IS2 &&
 918                     filter->action.police_ena &&
 919                     filter->action.pol_ix < pol_ix) {
 920                         filter->action.pol_ix += 1;
 921                         ocelot_vcap_policer_add(ocelot, filter->action.pol_ix,
 922                                                 &filter->action.pol);
 923                         is2_entry_set(ocelot, index, filter);
 924                 }
 925         }
 926
 927         pp.mode = MSCC_QOS_RATE_MODE_DISABLED;
 928         qos_policer_conf_set(ocelot, 0, pol_ix, &pp);
 929
 930         block->pol_lpr++;
 931 }
 932
 933 static void ocelot_vcap_filter_add_to_block(struct ocelot *ocelot,
 934                                             struct ocelot_vcap_block *block,
 935                                             struct ocelot_vcap_filter *filter)
 936 {
 937         struct ocelot_vcap_filter *tmp;
 938         struct list_head *pos, *n;
 939
 940         if (filter->block_id == VCAP_IS2 && filter->action.police_ena) {
 941                 block->pol_lpr--;
 942                 filter->action.pol_ix = block->pol_lpr;
 943                 ocelot_vcap_policer_add(ocelot, filter->action.pol_ix,
 944                                         &filter->action.pol);
 945         }
 946
 947         block->count++;
 948
 949         if (list_empty(&block->rules)) {
 950                 list_add(&filter->list, &block->rules);
 951                 return;
 952         }
 953
 954         list_for_each_safe(pos, n, &block->rules) {
 955                 tmp = list_entry(pos, struct ocelot_vcap_filter, list);
 956                 if (filter->prio < tmp->prio)
 957                         break;
 958         }
 959         list_add(&filter->list, pos->prev);
 960 }
 961
 962 static bool ocelot_vcap_filter_equal(const struct ocelot_vcap_filter *a,
 963                                      const struct ocelot_vcap_filter *b)
 964 {
 965         return !memcmp(&a->id, &b->id, sizeof(struct ocelot_vcap_id));
 966 }
 967
 968 static int ocelot_vcap_block_get_filter_index(struct ocelot_vcap_block *block,
 969                                               struct ocelot_vcap_filter *filter)
 970 {
 971         struct ocelot_vcap_filter *tmp;
 972         int index = 0;
 973
 974         list_for_each_entry(tmp, &block->rules, list) {
 975                 if (ocelot_vcap_filter_equal(filter, tmp))
 976                         return index;
 977                 index++;
 978         }
 979
 980         return -ENOENT;
 981 }
 982
 983 static struct ocelot_vcap_filter*
 984 ocelot_vcap_block_find_filter_by_index(struct ocelot_vcap_block *block,
 985                                        int index)
 986 {
 987         struct ocelot_vcap_filter *tmp;
 988         int i = 0;
 989
 990         list_for_each_entry(tmp, &block->rules, list) {
 991                 if (i == index)
 992                         return tmp;
 993                 ++i;
 994         }
 995
 996         return NULL;
 997 }
 998
 999 struct ocelot_vcap_filter *
1000 ocelot_vcap_block_find_filter_by_id(struct ocelot_vcap_block *block, int cookie,
1001                                     bool tc_offload)
1002 {
1003         struct ocelot_vcap_filter *filter;
1004
1005         list_for_each_entry(filter, &block->rules, list)
1006                 if (filter->id.tc_offload == tc_offload &&
1007                     filter->id.cookie == cookie)
1008                         return filter;
1009
1010         return NULL;
1011 }
1012 EXPORT_SYMBOL(ocelot_vcap_block_find_filter_by_id);
1013
1014 /* If @on=false, then SNAP, ARP, IP and OAM frames will not match on keys based
1015  * on destination and source MAC addresses, but only on higher-level protocol
1016  * information. The only frame types to match on keys containing MAC addresses
1017  * in this case are non-SNAP, non-ARP, non-IP and non-OAM frames.
1018  *
1019  * If @on=true, then the above frame types (SNAP, ARP, IP and OAM) will match
1020  * on MAC_ETYPE keys such as destination and source MAC on this ingress port.
1021  * However the setting has the side effect of making these frames not matching
1022  * on any _other_ keys than MAC_ETYPE ones.
1023  */
1024 static void ocelot_match_all_as_mac_etype(struct ocelot *ocelot, int port,
1025                                           int lookup, bool on)
1026 {
1027         u32 val = 0;
1028
1029         if (on)
1030                 val = ANA_PORT_VCAP_S2_CFG_S2_SNAP_DIS(BIT(lookup)) |
1031                       ANA_PORT_VCAP_S2_CFG_S2_ARP_DIS(BIT(lookup)) |
1032                       ANA_PORT_VCAP_S2_CFG_S2_IP_TCPUDP_DIS(BIT(lookup)) |
1033                       ANA_PORT_VCAP_S2_CFG_S2_IP_OTHER_DIS(BIT(lookup)) |
1034                       ANA_PORT_VCAP_S2_CFG_S2_OAM_DIS(BIT(lookup));
1035
1036         ocelot_rmw_gix(ocelot, val,
1037                        ANA_PORT_VCAP_S2_CFG_S2_SNAP_DIS(BIT(lookup)) |
1038                        ANA_PORT_VCAP_S2_CFG_S2_ARP_DIS(BIT(lookup)) |
1039                        ANA_PORT_VCAP_S2_CFG_S2_IP_TCPUDP_DIS(BIT(lookup)) |
1040                        ANA_PORT_VCAP_S2_CFG_S2_IP_OTHER_DIS(BIT(lookup)) |
1041                        ANA_PORT_VCAP_S2_CFG_S2_OAM_DIS(BIT(lookup)),
1042                        ANA_PORT_VCAP_S2_CFG, port);
1043 }
1044
1045 static bool
1046 ocelot_vcap_is_problematic_mac_etype(struct ocelot_vcap_filter *filter)
1047 {
1048         u16 proto, mask;
1049
1050         if (filter->key_type != OCELOT_VCAP_KEY_ETYPE)
1051                 return false;
1052
1053         proto = ntohs(*(__be16 *)filter->key.etype.etype.value);
1054         mask = ntohs(*(__be16 *)filter->key.etype.etype.mask);
1055
1056         /* ETH_P_ALL match, so all protocols below are included */
1057         if (mask == 0)
1058                 return true;
1059         if (proto == ETH_P_ARP)
1060                 return true;
1061         if (proto == ETH_P_IP)
1062                 return true;
1063         if (proto == ETH_P_IPV6)
1064                 return true;
1065
1066         return false;
1067 }
1068
1069 static bool
1070 ocelot_vcap_is_problematic_non_mac_etype(struct ocelot_vcap_filter *filter)
1071 {
1072         if (filter->key_type == OCELOT_VCAP_KEY_SNAP)
1073                 return true;
1074         if (filter->key_type == OCELOT_VCAP_KEY_ARP)
1075                 return true;
1076         if (filter->key_type == OCELOT_VCAP_KEY_IPV4)
1077                 return true;
1078         if (filter->key_type == OCELOT_VCAP_KEY_IPV6)
1079                 return true;
1080         return false;
1081 }
1082
1083 static bool
1084 ocelot_exclusive_mac_etype_filter_rules(struct ocelot *ocelot,
1085                                         struct ocelot_vcap_filter *filter)
1086 {
1087         struct ocelot_vcap_block *block = &ocelot->block[filter->block_id];
1088         struct ocelot_vcap_filter *tmp;
1089         unsigned long port;
1090         int i;
1091
1092         /* We only have the S2_IP_TCPUDP_DIS set of knobs for VCAP IS2 */
1093         if (filter->block_id != VCAP_IS2)
1094                 return true;
1095
1096         if (ocelot_vcap_is_problematic_mac_etype(filter)) {
1097                 /* Search for any non-MAC_ETYPE rules on the port */
1098                 for (i = 0; i < block->count; i++) {
1099                         tmp = ocelot_vcap_block_find_filter_by_index(block, i);
1100                         if (tmp->ingress_port_mask & filter->ingress_port_mask &&
1101                             tmp->lookup == filter->lookup &&
1102                             ocelot_vcap_is_problematic_non_mac_etype(tmp))
1103                                 return false;
1104                 }
1105
1106                 for_each_set_bit(port, &filter->ingress_port_mask,
1107                                  ocelot->num_phys_ports)
1108                         ocelot_match_all_as_mac_etype(ocelot, port,
1109                                                       filter->lookup, true);
1110         } else if (ocelot_vcap_is_problematic_non_mac_etype(filter)) {
1111                 /* Search for any MAC_ETYPE rules on the port */
1112                 for (i = 0; i < block->count; i++) {
1113                         tmp = ocelot_vcap_block_find_filter_by_index(block, i);
1114                         if (tmp->ingress_port_mask & filter->ingress_port_mask &&
1115                             tmp->lookup == filter->lookup &&
1116                             ocelot_vcap_is_problematic_mac_etype(tmp))
1117                                 return false;
1118                 }
1119
1120                 for_each_set_bit(port, &filter->ingress_port_mask,
1121                                  ocelot->num_phys_ports)
1122                         ocelot_match_all_as_mac_etype(ocelot, port,
1123                                                       filter->lookup, false);
1124         }
1125
1126         return true;
1127 }
1128
1129 int ocelot_vcap_filter_add(struct ocelot *ocelot,
1130                            struct ocelot_vcap_filter *filter,
1131                            struct netlink_ext_ack *extack)
1132 {
1133         struct ocelot_vcap_block *block = &ocelot->block[filter->block_id];
1134         int i, index;
1135
1136         if (!ocelot_exclusive_mac_etype_filter_rules(ocelot, filter)) {
1137                 NL_SET_ERR_MSG_MOD(extack,
1138                                    "Cannot mix MAC_ETYPE with non-MAC_ETYPE rules, use the other IS2 lookup");
1139                 return -EBUSY;
1140         }
1141
1142         /* Add filter to the linked list */
1143         ocelot_vcap_filter_add_to_block(ocelot, block, filter);
1144
1145         /* Get the index of the inserted filter */
1146         index = ocelot_vcap_block_get_filter_index(block, filter);
1147         if (index < 0)
1148                 return index;
1149
1150         /* Move down the rules to make place for the new filter */
1151         for (i = block->count - 1; i > index; i--) {
1152                 struct ocelot_vcap_filter *tmp;
1153
1154                 tmp = ocelot_vcap_block_find_filter_by_index(block, i);
1155                 vcap_entry_set(ocelot, i, tmp);
1156         }
1157
1158         /* Now insert the new filter */
1159         vcap_entry_set(ocelot, index, filter);
1160         return 0;
1161 }
1162 EXPORT_SYMBOL(ocelot_vcap_filter_add);
1163
1164 static void ocelot_vcap_block_remove_filter(struct ocelot *ocelot,
1165                                             struct ocelot_vcap_block *block,
1166                                             struct ocelot_vcap_filter *filter)
1167 {
1168         struct ocelot_vcap_filter *tmp;
1169         struct list_head *pos, *q;
1170
1171         list_for_each_safe(pos, q, &block->rules) {
1172                 tmp = list_entry(pos, struct ocelot_vcap_filter, list);
1173                 if (ocelot_vcap_filter_equal(filter, tmp)) {
1174                         if (tmp->block_id == VCAP_IS2 &&
1175                             tmp->action.police_ena)
1176                                 ocelot_vcap_policer_del(ocelot, block,
1177                                                         tmp->action.pol_ix);
1178
1179                         list_del(pos);
1180                         kfree(tmp);
1181                 }
1182         }
1183
1184         block->count--;
1185 }
1186
1187 int ocelot_vcap_filter_del(struct ocelot *ocelot,
1188                            struct ocelot_vcap_filter *filter)
1189 {
1190         struct ocelot_vcap_block *block = &ocelot->block[filter->block_id];
1191         struct ocelot_vcap_filter del_filter;
1192         int i, index;
1193
1194         memset(&del_filter, 0, sizeof(del_filter));
1195
1196         /* Gets index of the filter */
1197         index = ocelot_vcap_block_get_filter_index(block, filter);
1198         if (index < 0)
1199                 return index;
1200
1201         /* Delete filter */
1202         ocelot_vcap_block_remove_filter(ocelot, block, filter);
1203
1204         /* Move up all the blocks over the deleted filter */
1205         for (i = index; i < block->count; i++) {
1206                 struct ocelot_vcap_filter *tmp;
1207
1208                 tmp = ocelot_vcap_block_find_filter_by_index(block, i);
1209                 vcap_entry_set(ocelot, i, tmp);
1210         }
1211
1212         /* Now delete the last filter, because it is duplicated */
1213         vcap_entry_set(ocelot, block->count, &del_filter);
1214
1215         return 0;
1216 }
1217 EXPORT_SYMBOL(ocelot_vcap_filter_del);
1218
1219 int ocelot_vcap_filter_stats_update(struct ocelot *ocelot,
1220                                     struct ocelot_vcap_filter *filter)
1221 {
1222         struct ocelot_vcap_block *block = &ocelot->block[filter->block_id];
1223         struct ocelot_vcap_filter tmp;
1224         int index;
1225
1226         index = ocelot_vcap_block_get_filter_index(block, filter);
1227         if (index < 0)
1228                 return index;
1229
1230         vcap_entry_get(ocelot, index, filter);
1231
1232         /* After we get the result we need to clear the counters */
1233         tmp = *filter;
1234         tmp.stats.pkts = 0;
1235         vcap_entry_set(ocelot, index, &tmp);
1236
1237         return 0;
1238 }
1239
1240 static void ocelot_vcap_init_one(struct ocelot *ocelot,
1241                                  const struct vcap_props *vcap)
1242 {
1243         struct vcap_data data;
1244
1245         memset(&data, 0, sizeof(data));
1246
1247         vcap_entry2cache(ocelot, vcap, &data);
1248         ocelot_target_write(ocelot, vcap->target, vcap->entry_count,
1249                             VCAP_CORE_MV_CFG);
1250         vcap_cmd(ocelot, vcap, 0, VCAP_CMD_INITIALIZE, VCAP_SEL_ENTRY);
1251
1252         vcap_action2cache(ocelot, vcap, &data);
1253         ocelot_target_write(ocelot, vcap->target, vcap->action_count,
1254                             VCAP_CORE_MV_CFG);
1255         vcap_cmd(ocelot, vcap, 0, VCAP_CMD_INITIALIZE,
1256                  VCAP_SEL_ACTION | VCAP_SEL_COUNTER);
1257 }
1258
1259 static void ocelot_vcap_detect_constants(struct ocelot *ocelot,
1260                                          struct vcap_props *vcap)
1261 {
1262         int counter_memory_width;
1263         int num_default_actions;
1264         int version;
1265
1266         version = ocelot_target_read(ocelot, vcap->target,
1267                                      VCAP_CONST_VCAP_VER);
1268         /* Only version 0 VCAP supported for now */
1269         if (WARN_ON(version != 0))
1270                 return;
1271
1272         /* Width in bits of type-group field */
1273         vcap->tg_width = ocelot_target_read(ocelot, vcap->target,
1274                                             VCAP_CONST_ENTRY_TG_WIDTH);
1275         /* Number of subwords per TCAM row */
1276         vcap->sw_count = ocelot_target_read(ocelot, vcap->target,
1277                                             VCAP_CONST_ENTRY_SWCNT);
1278         /* Number of rows in TCAM. There can be this many full keys, or double
1279          * this number half keys, or 4 times this number quarter keys.
1280          */
1281         vcap->entry_count = ocelot_target_read(ocelot, vcap->target,
1282                                                VCAP_CONST_ENTRY_CNT);
1283         /* Assuming there are 4 subwords per TCAM row, their layout in the
1284          * actual TCAM (not in the cache) would be:
1285          *
1286          * |  SW 3  | TG 3 |  SW 2  | TG 2 |  SW 1  | TG 1 |  SW 0  | TG 0 |
1287          *
1288          * (where SW=subword and TG=Type-Group).
1289          *
1290          * What VCAP_CONST_ENTRY_CNT is giving us is the width of one full TCAM
1291          * row. But when software accesses the TCAM through the cache
1292          * registers, the Type-Group values are written through another set of
1293          * registers VCAP_TG_DAT, and therefore, it appears as though the 4
1294          * subwords are contiguous in the cache memory.
1295          * Important mention: regardless of the number of key entries per row
1296          * (and therefore of key size: 1 full key or 2 half keys or 4 quarter
1297          * keys), software always has to configure 4 Type-Group values. For
1298          * example, in the case of 1 full key, the driver needs to set all 4
1299          * Type-Group to be full key.
1300          *
1301          * For this reason, we need to fix up the value that the hardware is
1302          * giving us. We don't actually care about the width of the entry in
1303          * the TCAM. What we care about is the width of the entry in the cache
1304          * registers, which is how we get to interact with it. And since the
1305          * VCAP_ENTRY_DAT cache registers access only the subwords and not the
1306          * Type-Groups, this means we need to subtract the width of the
1307          * Type-Groups when packing and unpacking key entry data in a TCAM row.
1308          */
1309         vcap->entry_width = ocelot_target_read(ocelot, vcap->target,
1310                                                VCAP_CONST_ENTRY_WIDTH);
1311         vcap->entry_width -= vcap->tg_width * vcap->sw_count;
1312         num_default_actions = ocelot_target_read(ocelot, vcap->target,
1313                                                  VCAP_CONST_ACTION_DEF_CNT);
1314         vcap->action_count = vcap->entry_count + num_default_actions;
1315         vcap->action_width = ocelot_target_read(ocelot, vcap->target,
1316                                                 VCAP_CONST_ACTION_WIDTH);
1317         /* The width of the counter memory, this is the complete width of all
1318          * counter-fields associated with one full-word entry. There is one
1319          * counter per entry sub-word (see CAP_CORE::ENTRY_SWCNT for number of
1320          * subwords.)
1321          */
1322         vcap->counter_words = vcap->sw_count;
1323         counter_memory_width = ocelot_target_read(ocelot, vcap->target,
1324                                                   VCAP_CONST_CNT_WIDTH);
1325         vcap->counter_width = counter_memory_width / vcap->counter_words;
1326 }
1327
1328 int ocelot_vcap_init(struct ocelot *ocelot)
1329 {
1330         int i;
1331
1332         /* Create a policer that will drop the frames for the cpu.
1333          * This policer will be used as action in the acl rules to drop
1334          * frames.
1335          */
1336         ocelot_write_gix(ocelot, 0x299, ANA_POL_MODE_CFG,
1337                          OCELOT_POLICER_DISCARD);
1338         ocelot_write_gix(ocelot, 0x1, ANA_POL_PIR_CFG,
1339                          OCELOT_POLICER_DISCARD);
1340         ocelot_write_gix(ocelot, 0x3fffff, ANA_POL_PIR_STATE,
1341                          OCELOT_POLICER_DISCARD);
1342         ocelot_write_gix(ocelot, 0x0, ANA_POL_CIR_CFG,
1343                          OCELOT_POLICER_DISCARD);
1344         ocelot_write_gix(ocelot, 0x3fffff, ANA_POL_CIR_STATE,
1345                          OCELOT_POLICER_DISCARD);
1346
1347         for (i = 0; i < OCELOT_NUM_VCAP_BLOCKS; i++) {
1348                 struct ocelot_vcap_block *block = &ocelot->block[i];
1349                 struct vcap_props *vcap = &ocelot->vcap[i];
1350
1351                 INIT_LIST_HEAD(&block->rules);
1352                 block->pol_lpr = OCELOT_POLICER_DISCARD - 1;
1353
1354                 ocelot_vcap_detect_constants(ocelot, vcap);
1355                 ocelot_vcap_init_one(ocelot, vcap);
1356         }
1357
1358         INIT_LIST_HEAD(&ocelot->dummy_rules);
1359
1360         return 0;
1361 }