drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c

   1 /*
   2  * aQuantia Corporation Network Driver
   3  * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  */
   9
  10 /* File hw_atl_b0.c: Definition of Atlantic hardware specific functions. */
  11
  12 #include "../aq_hw.h"
  13 #include "../aq_hw_utils.h"
  14 #include "../aq_ring.h"
  15 #include "hw_atl_b0.h"
  16 #include "hw_atl_utils.h"
  17 #include "hw_atl_llh.h"
  18 #include "hw_atl_b0_internal.h"
  19
  20 static int hw_atl_b0_get_hw_caps(struct aq_hw_s *self,
  21                                  struct aq_hw_caps_s *aq_hw_caps)
  22 {
  23         memcpy(aq_hw_caps, &hw_atl_b0_hw_caps_, sizeof(*aq_hw_caps));
  24         return 0;
  25 }
  26
  27 static struct aq_hw_s *hw_atl_b0_create(struct aq_pci_func_s *aq_pci_func,
  28                                         unsigned int port,
  29                                         struct aq_hw_ops *ops)
  30 {
  31         struct hw_atl_s *self = NULL;
  32
  33         self = kzalloc(sizeof(*self), GFP_KERNEL);
  34         if (!self)
  35                 goto err_exit;
  36
  37         self->base.aq_pci_func = aq_pci_func;
  38
  39         self->base.not_ff_addr = 0x10U;
  40
  41 err_exit:
  42         return (struct aq_hw_s *)self;
  43 }
  44
  45 static void hw_atl_b0_destroy(struct aq_hw_s *self)
  46 {
  47         kfree(self);
  48 }
  49
  50 static int hw_atl_b0_hw_reset(struct aq_hw_s *self)
  51 {
  52         int err = 0;
  53
  54         glb_glb_reg_res_dis_set(self, 1U);
  55         pci_pci_reg_res_dis_set(self, 0U);
  56         rx_rx_reg_res_dis_set(self, 0U);
  57         tx_tx_reg_res_dis_set(self, 0U);
  58
  59         HW_ATL_FLUSH();
  60         glb_soft_res_set(self, 1);
  61
  62         /* check 10 times by 1ms */
  63         AQ_HW_WAIT_FOR(glb_soft_res_get(self) == 0, 1000U, 10U);
  64         if (err < 0)
  65                 goto err_exit;
  66
  67         itr_irq_reg_res_dis_set(self, 0U);
  68         itr_res_irq_set(self, 1U);
  69
  70         /* check 10 times by 1ms */
  71         AQ_HW_WAIT_FOR(itr_res_irq_get(self) == 0, 1000U, 10U);
  72         if (err < 0)
  73                 goto err_exit;
  74
  75         hw_atl_utils_mpi_set(self, MPI_RESET, 0x0U);
  76
  77         err = aq_hw_err_from_flags(self);
  78
  79 err_exit:
  80         return err;
  81 }
  82
  83 static int hw_atl_b0_hw_qos_set(struct aq_hw_s *self)
  84 {
  85         u32 tc = 0U;
  86         u32 buff_size = 0U;
  87         unsigned int i_priority = 0U;
  88         bool is_rx_flow_control = false;
  89
  90         /* TPS Descriptor rate init */
  91         tps_tx_pkt_shed_desc_rate_curr_time_res_set(self, 0x0U);
  92         tps_tx_pkt_shed_desc_rate_lim_set(self, 0xA);
  93
  94         /* TPS VM init */
  95         tps_tx_pkt_shed_desc_vm_arb_mode_set(self, 0U);
  96
  97         /* TPS TC credits init */
  98         tps_tx_pkt_shed_desc_tc_arb_mode_set(self, 0U);
  99         tps_tx_pkt_shed_data_arb_mode_set(self, 0U);
 100
 101         tps_tx_pkt_shed_tc_data_max_credit_set(self, 0xFFF, 0U);
 102         tps_tx_pkt_shed_tc_data_weight_set(self, 0x64, 0U);
 103         tps_tx_pkt_shed_desc_tc_max_credit_set(self, 0x50, 0U);
 104         tps_tx_pkt_shed_desc_tc_weight_set(self, 0x1E, 0U);
 105
 106         /* Tx buf size */
 107         buff_size = HW_ATL_B0_TXBUF_MAX;
 108
 109         tpb_tx_pkt_buff_size_per_tc_set(self, buff_size, tc);
 110         tpb_tx_buff_hi_threshold_per_tc_set(self,
 111                                             (buff_size * (1024 / 32U) * 66U) /
 112                                             100U, tc);
 113         tpb_tx_buff_lo_threshold_per_tc_set(self,
 114                                             (buff_size * (1024 / 32U) * 50U) /
 115                                             100U, tc);
 116
 117         /* QoS Rx buf size per TC */
 118         tc = 0;
 119         is_rx_flow_control = (AQ_NIC_FC_RX & self->aq_nic_cfg->flow_control);
 120         buff_size = HW_ATL_B0_RXBUF_MAX;
 121
 122         rpb_rx_pkt_buff_size_per_tc_set(self, buff_size, tc);
 123         rpb_rx_buff_hi_threshold_per_tc_set(self,
 124                                             (buff_size *
 125                                             (1024U / 32U) * 66U) /
 126                                             100U, tc);
 127         rpb_rx_buff_lo_threshold_per_tc_set(self,
 128                                             (buff_size *
 129                                             (1024U / 32U) * 50U) /
 130                                             100U, tc);
 131         rpb_rx_xoff_en_per_tc_set(self, is_rx_flow_control ? 1U : 0U, tc);
 132
 133         /* QoS 802.1p priority -> TC mapping */
 134         for (i_priority = 8U; i_priority--;)
 135                 rpf_rpb_user_priority_tc_map_set(self, i_priority, 0U);
 136
 137         return aq_hw_err_from_flags(self);
 138 }
 139
 140 static int hw_atl_b0_hw_rss_hash_set(struct aq_hw_s *self,
 141                                      struct aq_rss_parameters *rss_params)
 142 {
 143         struct aq_nic_cfg_s *cfg = NULL;
 144         int err = 0;
 145         unsigned int i = 0U;
 146         unsigned int addr = 0U;
 147
 148         cfg = self->aq_nic_cfg;
 149
 150         for (i = 10, addr = 0U; i--; ++addr) {
 151                 u32 key_data = cfg->is_rss ?
 152                         __swab32(rss_params->hash_secret_key[i]) : 0U;
 153                 rpf_rss_key_wr_data_set(self, key_data);
 154                 rpf_rss_key_addr_set(self, addr);
 155                 rpf_rss_key_wr_en_set(self, 1U);
 156                 AQ_HW_WAIT_FOR(rpf_rss_key_wr_en_get(self) == 0, 1000U, 10U);
 157                 if (err < 0)
 158                         goto err_exit;
 159         }
 160
 161         err = aq_hw_err_from_flags(self);
 162
 163 err_exit:
 164         return err;
 165 }
 166
 167 static int hw_atl_b0_hw_rss_set(struct aq_hw_s *self,
 168                                 struct aq_rss_parameters *rss_params)
 169 {
 170         u8 *indirection_table = rss_params->indirection_table;
 171         u32 i = 0U;
 172         u32 num_rss_queues = max(1U, self->aq_nic_cfg->num_rss_queues);
 173         int err = 0;
 174         u16 bitary[(HW_ATL_B0_RSS_REDIRECTION_MAX *
 175                                         HW_ATL_B0_RSS_REDIRECTION_BITS / 16U)];
 176
 177         memset(bitary, 0, sizeof(bitary));
 178
 179         for (i = HW_ATL_B0_RSS_REDIRECTION_MAX; i--;) {
 180                 (*(u32 *)(bitary + ((i * 3U) / 16U))) |=
 181                         ((indirection_table[i] % num_rss_queues) <<
 182                         ((i * 3U) & 0xFU));
 183         }
 184
 185         for (i = AQ_DIMOF(bitary); i--;) {
 186                 rpf_rss_redir_tbl_wr_data_set(self, bitary[i]);
 187                 rpf_rss_redir_tbl_addr_set(self, i);
 188                 rpf_rss_redir_wr_en_set(self, 1U);
 189                 AQ_HW_WAIT_FOR(rpf_rss_redir_wr_en_get(self) == 0, 1000U, 10U);
 190                 if (err < 0)
 191                         goto err_exit;
 192         }
 193
 194         err = aq_hw_err_from_flags(self);
 195
 196 err_exit:
 197         return err;
 198 }
 199
 200 static int hw_atl_b0_hw_offload_set(struct aq_hw_s *self,
 201                                     struct aq_nic_cfg_s *aq_nic_cfg)
 202 {
 203         int err = 0;
 204         unsigned int i;
 205
 206         /* TX checksums offloads*/
 207         tpo_ipv4header_crc_offload_en_set(self, 1);
 208         tpo_tcp_udp_crc_offload_en_set(self, 1);
 209         if (err < 0)
 210                 goto err_exit;
 211
 212         /* RX checksums offloads*/
 213         rpo_ipv4header_crc_offload_en_set(self, 1);
 214         rpo_tcp_udp_crc_offload_en_set(self, 1);
 215         if (err < 0)
 216                 goto err_exit;
 217
 218         /* LSO offloads*/
 219         tdm_large_send_offload_en_set(self, 0xFFFFFFFFU);
 220         if (err < 0)
 221                 goto err_exit;
 222
 223 /* LRO offloads */
 224         {
 225                 unsigned int val = (8U < HW_ATL_B0_LRO_RXD_MAX) ? 0x3U :
 226                         ((4U < HW_ATL_B0_LRO_RXD_MAX) ? 0x2U :
 227                         ((2U < HW_ATL_B0_LRO_RXD_MAX) ? 0x1U : 0x0));
 228
 229                 for (i = 0; i < HW_ATL_B0_RINGS_MAX; i++)
 230                         rpo_lro_max_num_of_descriptors_set(self, val, i);
 231
 232                 rpo_lro_time_base_divider_set(self, 0x61AU);
 233                 rpo_lro_inactive_interval_set(self, 0);
 234                 rpo_lro_max_coalescing_interval_set(self, 2);
 235
 236                 rpo_lro_qsessions_lim_set(self, 1U);
 237
 238                 rpo_lro_total_desc_lim_set(self, 2U);
 239
 240                 rpo_lro_patch_optimization_en_set(self, 0U);
 241
 242                 rpo_lro_min_pay_of_first_pkt_set(self, 10U);
 243
 244                 rpo_lro_pkt_lim_set(self, 1U);
 245
 246                 rpo_lro_en_set(self, aq_nic_cfg->is_lro ? 0xFFFFFFFFU : 0U);
 247         }
 248         err = aq_hw_err_from_flags(self);
 249
 250 err_exit:
 251         return err;
 252 }
 253
 254 static int hw_atl_b0_hw_init_tx_path(struct aq_hw_s *self)
 255 {
 256         thm_lso_tcp_flag_of_first_pkt_set(self, 0x0FF6U);
 257         thm_lso_tcp_flag_of_middle_pkt_set(self, 0x0FF6U);
 258         thm_lso_tcp_flag_of_last_pkt_set(self, 0x0F7FU);
 259
 260         /* Tx interrupts */
 261         tdm_tx_desc_wr_wb_irq_en_set(self, 1U);
 262
 263         /* misc */
 264         aq_hw_write_reg(self, 0x00007040U, IS_CHIP_FEATURE(TPO2) ?
 265                         0x00010000U : 0x00000000U);
 266         tdm_tx_dca_en_set(self, 0U);
 267         tdm_tx_dca_mode_set(self, 0U);
 268
 269         tpb_tx_path_scp_ins_en_set(self, 1U);
 270
 271         return aq_hw_err_from_flags(self);
 272 }
 273
 274 static int hw_atl_b0_hw_init_rx_path(struct aq_hw_s *self)
 275 {
 276         struct aq_nic_cfg_s *cfg = self->aq_nic_cfg;
 277         int i;
 278
 279         /* Rx TC/RSS number config */
 280         rpb_rpf_rx_traf_class_mode_set(self, 1U);
 281
 282         /* Rx flow control */
 283         rpb_rx_flow_ctl_mode_set(self, 1U);
 284
 285         /* RSS Ring selection */
 286         reg_rx_flr_rss_control1set(self, cfg->is_rss ?
 287                                         0xB3333333U : 0x00000000U);
 288
 289         /* Multicast filters */
 290         for (i = HW_ATL_B0_MAC_MAX; i--;) {
 291                 rpfl2_uc_flr_en_set(self, (i == 0U) ? 1U : 0U, i);
 292                 rpfl2unicast_flr_act_set(self, 1U, i);
 293         }
 294
 295         reg_rx_flr_mcst_flr_msk_set(self, 0x00000000U);
 296         reg_rx_flr_mcst_flr_set(self, 0x00010FFFU, 0U);
 297
 298         /* Vlan filters */
 299         rpf_vlan_outer_etht_set(self, 0x88A8U);
 300         rpf_vlan_inner_etht_set(self, 0x8100U);
 301
 302         if (cfg->vlan_id) {
 303                 rpf_vlan_flr_act_set(self, 1U, 0U);
 304                 rpf_vlan_id_flr_set(self, 0U, 0U);
 305                 rpf_vlan_flr_en_set(self, 0U, 0U);
 306
 307                 rpf_vlan_accept_untagged_packets_set(self, 1U);
 308                 rpf_vlan_untagged_act_set(self, 1U);
 309
 310                 rpf_vlan_flr_act_set(self, 1U, 1U);
 311                 rpf_vlan_id_flr_set(self, cfg->vlan_id, 0U);
 312                 rpf_vlan_flr_en_set(self, 1U, 1U);
 313         } else {
 314                 rpf_vlan_prom_mode_en_set(self, 1);
 315         }
 316
 317         /* Rx Interrupts */
 318         rdm_rx_desc_wr_wb_irq_en_set(self, 1U);
 319
 320         /* misc */
 321         aq_hw_write_reg(self, 0x00005040U,
 322                         IS_CHIP_FEATURE(RPF2) ? 0x000F0000U : 0x00000000U);
 323
 324         rpfl2broadcast_flr_act_set(self, 1U);
 325         rpfl2broadcast_count_threshold_set(self, 0xFFFFU & (~0U / 256U));
 326
 327         rdm_rx_dca_en_set(self, 0U);
 328         rdm_rx_dca_mode_set(self, 0U);
 329
 330         return aq_hw_err_from_flags(self);
 331 }
 332
 333 static int hw_atl_b0_hw_mac_addr_set(struct aq_hw_s *self, u8 *mac_addr)
 334 {
 335         int err = 0;
 336         unsigned int h = 0U;
 337         unsigned int l = 0U;
 338
 339         if (!mac_addr) {
 340                 err = -EINVAL;
 341                 goto err_exit;
 342         }
 343         h = (mac_addr[0] << 8) | (mac_addr[1]);
 344         l = (mac_addr[2] << 24) | (mac_addr[3] << 16) |
 345                 (mac_addr[4] << 8) | mac_addr[5];
 346
 347         rpfl2_uc_flr_en_set(self, 0U, HW_ATL_B0_MAC);
 348         rpfl2unicast_dest_addresslsw_set(self, l, HW_ATL_B0_MAC);
 349         rpfl2unicast_dest_addressmsw_set(self, h, HW_ATL_B0_MAC);
 350         rpfl2_uc_flr_en_set(self, 1U, HW_ATL_B0_MAC);
 351
 352         err = aq_hw_err_from_flags(self);
 353
 354 err_exit:
 355         return err;
 356 }
 357
 358 static int hw_atl_b0_hw_init(struct aq_hw_s *self,
 359                              struct aq_nic_cfg_s *aq_nic_cfg,
 360                              u8 *mac_addr)
 361 {
 362         static u32 aq_hw_atl_igcr_table_[4][2] = {
 363                 { 0x20000000U, 0x20000000U }, /* AQ_IRQ_INVALID */
 364                 { 0x20000080U, 0x20000080U }, /* AQ_IRQ_LEGACY */
 365                 { 0x20000021U, 0x20000025U }, /* AQ_IRQ_MSI */
 366                 { 0x20000022U, 0x20000026U }  /* AQ_IRQ_MSIX */
 367         };
 368
 369         int err = 0;
 370
 371         self->aq_nic_cfg = aq_nic_cfg;
 372
 373         hw_atl_utils_hw_chip_features_init(self,
 374                                            &PHAL_ATLANTIC_B0->chip_features);
 375
 376         hw_atl_b0_hw_init_tx_path(self);
 377         hw_atl_b0_hw_init_rx_path(self);
 378
 379         hw_atl_b0_hw_mac_addr_set(self, mac_addr);
 380
 381         hw_atl_utils_mpi_set(self, MPI_INIT, aq_nic_cfg->link_speed_msk);
 382
 383         hw_atl_b0_hw_qos_set(self);
 384         hw_atl_b0_hw_rss_set(self, &aq_nic_cfg->aq_rss);
 385         hw_atl_b0_hw_rss_hash_set(self, &aq_nic_cfg->aq_rss);
 386
 387         err = aq_hw_err_from_flags(self);
 388         if (err < 0)
 389                 goto err_exit;
 390
 391         /* Interrupts */
 392         reg_irq_glb_ctl_set(self,
 393                             aq_hw_atl_igcr_table_[aq_nic_cfg->irq_type]
 394                                                  [(aq_nic_cfg->vecs > 1U) ?
 395                                                  1 : 0]);
 396
 397         itr_irq_auto_masklsw_set(self, aq_nic_cfg->aq_hw_caps->irq_mask);
 398
 399         /* Interrupts */
 400         reg_gen_irq_map_set(self,
 401                             ((HW_ATL_B0_ERR_INT << 0x18) | (1U << 0x1F)) |
 402                             ((HW_ATL_B0_ERR_INT << 0x10) | (1U << 0x17)), 0U);
 403
 404         hw_atl_b0_hw_offload_set(self, aq_nic_cfg);
 405
 406 err_exit:
 407         return err;
 408 }
 409
 410 static int hw_atl_b0_hw_ring_tx_start(struct aq_hw_s *self,
 411                                       struct aq_ring_s *ring)
 412 {
 413         tdm_tx_desc_en_set(self, 1, ring->idx);
 414         return aq_hw_err_from_flags(self);
 415 }
 416
 417 static int hw_atl_b0_hw_ring_rx_start(struct aq_hw_s *self,
 418                                       struct aq_ring_s *ring)
 419 {
 420         rdm_rx_desc_en_set(self, 1, ring->idx);
 421         return aq_hw_err_from_flags(self);
 422 }
 423
 424 static int hw_atl_b0_hw_start(struct aq_hw_s *self)
 425 {
 426         tpb_tx_buff_en_set(self, 1);
 427         rpb_rx_buff_en_set(self, 1);
 428         return aq_hw_err_from_flags(self);
 429 }
 430
 431 static int hw_atl_b0_hw_tx_ring_tail_update(struct aq_hw_s *self,
 432                                             struct aq_ring_s *ring)
 433 {
 434         reg_tx_dma_desc_tail_ptr_set(self, ring->sw_tail, ring->idx);
 435         return 0;
 436 }
 437
 438 static int hw_atl_b0_hw_ring_tx_xmit(struct aq_hw_s *self,
 439                                      struct aq_ring_s *ring,
 440                                      unsigned int frags)
 441 {
 442         struct aq_ring_buff_s *buff = NULL;
 443         struct hw_atl_txd_s *txd = NULL;
 444         unsigned int buff_pa_len = 0U;
 445         unsigned int pkt_len = 0U;
 446         unsigned int frag_count = 0U;
 447         bool is_gso = false;
 448
 449         buff = &ring->buff_ring[ring->sw_tail];
 450         pkt_len = (buff->is_eop && buff->is_sop) ? buff->len : buff->len_pkt;
 451
 452         for (frag_count = 0; frag_count < frags; frag_count++) {
 453                 txd = (struct hw_atl_txd_s *)&ring->dx_ring[ring->sw_tail *
 454                                                 HW_ATL_B0_TXD_SIZE];
 455                 txd->ctl = 0;
 456                 txd->ctl2 = 0;
 457                 txd->buf_addr = 0;
 458
 459                 buff = &ring->buff_ring[ring->sw_tail];
 460
 461                 if (buff->is_txc) {
 462                         txd->ctl |= (buff->len_l3 << 31) |
 463                                 (buff->len_l2 << 24) |
 464                                 HW_ATL_B0_TXD_CTL_CMD_TCP |
 465                                 HW_ATL_B0_TXD_CTL_DESC_TYPE_TXC;
 466                         txd->ctl2 |= (buff->mss << 16) |
 467                                 (buff->len_l4 << 8) |
 468                                 (buff->len_l3 >> 1);
 469
 470                         pkt_len -= (buff->len_l4 +
 471                                     buff->len_l3 +
 472                                     buff->len_l2);
 473                         is_gso = true;
 474                 } else {
 475                         buff_pa_len = buff->len;
 476
 477                         txd->buf_addr = buff->pa;
 478                         txd->ctl |= (HW_ATL_B0_TXD_CTL_BLEN &
 479                                                 ((u32)buff_pa_len << 4));
 480                         txd->ctl |= HW_ATL_B0_TXD_CTL_DESC_TYPE_TXD;
 481                         /* PAY_LEN */
 482                         txd->ctl2 |= HW_ATL_B0_TXD_CTL2_LEN & (pkt_len << 14);
 483
 484                         if (is_gso) {
 485                                 txd->ctl |= HW_ATL_B0_TXD_CTL_CMD_LSO;
 486                                 txd->ctl2 |= HW_ATL_B0_TXD_CTL2_CTX_EN;
 487                         }
 488
 489                         /* Tx checksum offloads */
 490                         if (buff->is_ip_cso)
 491                                 txd->ctl |= HW_ATL_B0_TXD_CTL_CMD_IPCSO;
 492
 493                         if (buff->is_udp_cso || buff->is_tcp_cso)
 494                                 txd->ctl |= HW_ATL_B0_TXD_CTL_CMD_TUCSO;
 495
 496                         if (unlikely(buff->is_eop)) {
 497                                 txd->ctl |= HW_ATL_B0_TXD_CTL_EOP;
 498                                 txd->ctl |= HW_ATL_B0_TXD_CTL_CMD_WB;
 499                         }
 500                 }
 501
 502                 ring->sw_tail = aq_ring_next_dx(ring, ring->sw_tail);
 503         }
 504
 505         hw_atl_b0_hw_tx_ring_tail_update(self, ring);
 506         return aq_hw_err_from_flags(self);
 507 }
 508
 509 static int hw_atl_b0_hw_ring_rx_init(struct aq_hw_s *self,
 510                                      struct aq_ring_s *aq_ring,
 511                                      struct aq_ring_param_s *aq_ring_param)
 512 {
 513         u32 dma_desc_addr_lsw = (u32)aq_ring->dx_ring_pa;
 514         u32 dma_desc_addr_msw = (u32)(((u64)aq_ring->dx_ring_pa) >> 32);
 515
 516         rdm_rx_desc_en_set(self, false, aq_ring->idx);
 517
 518         rdm_rx_desc_head_splitting_set(self, 0U, aq_ring->idx);
 519
 520         reg_rx_dma_desc_base_addresslswset(self, dma_desc_addr_lsw,
 521                                            aq_ring->idx);
 522
 523         reg_rx_dma_desc_base_addressmswset(self,
 524                                            dma_desc_addr_msw, aq_ring->idx);
 525
 526         rdm_rx_desc_len_set(self, aq_ring->size / 8U, aq_ring->idx);
 527
 528         rdm_rx_desc_data_buff_size_set(self,
 529                                        AQ_CFG_RX_FRAME_MAX / 1024U,
 530                                        aq_ring->idx);
 531
 532         rdm_rx_desc_head_buff_size_set(self, 0U, aq_ring->idx);
 533         rdm_rx_desc_head_splitting_set(self, 0U, aq_ring->idx);
 534         rpo_rx_desc_vlan_stripping_set(self, 0U, aq_ring->idx);
 535
 536         /* Rx ring set mode */
 537
 538         /* Mapping interrupt vector */
 539         itr_irq_map_rx_set(self, aq_ring_param->vec_idx, aq_ring->idx);
 540         itr_irq_map_en_rx_set(self, true, aq_ring->idx);
 541
 542         rdm_cpu_id_set(self, aq_ring_param->cpu, aq_ring->idx);
 543         rdm_rx_desc_dca_en_set(self, 0U, aq_ring->idx);
 544         rdm_rx_head_dca_en_set(self, 0U, aq_ring->idx);
 545         rdm_rx_pld_dca_en_set(self, 0U, aq_ring->idx);
 546
 547         return aq_hw_err_from_flags(self);
 548 }
 549
 550 static int hw_atl_b0_hw_ring_tx_init(struct aq_hw_s *self,
 551                                      struct aq_ring_s *aq_ring,
 552                                      struct aq_ring_param_s *aq_ring_param)
 553 {
 554         u32 dma_desc_lsw_addr = (u32)aq_ring->dx_ring_pa;
 555         u32 dma_desc_msw_addr = (u32)(((u64)aq_ring->dx_ring_pa) >> 32);
 556
 557         reg_tx_dma_desc_base_addresslswset(self, dma_desc_lsw_addr,
 558                                            aq_ring->idx);
 559
 560         reg_tx_dma_desc_base_addressmswset(self, dma_desc_msw_addr,
 561                                            aq_ring->idx);
 562
 563         tdm_tx_desc_len_set(self, aq_ring->size / 8U, aq_ring->idx);
 564
 565         hw_atl_b0_hw_tx_ring_tail_update(self, aq_ring);
 566
 567         /* Set Tx threshold */
 568         tdm_tx_desc_wr_wb_threshold_set(self, 0U, aq_ring->idx);
 569
 570         /* Mapping interrupt vector */
 571         itr_irq_map_tx_set(self, aq_ring_param->vec_idx, aq_ring->idx);
 572         itr_irq_map_en_tx_set(self, true, aq_ring->idx);
 573
 574         tdm_cpu_id_set(self, aq_ring_param->cpu, aq_ring->idx);
 575         tdm_tx_desc_dca_en_set(self, 0U, aq_ring->idx);
 576
 577         return aq_hw_err_from_flags(self);
 578 }
 579
 580 static int hw_atl_b0_hw_ring_rx_fill(struct aq_hw_s *self,
 581                                      struct aq_ring_s *ring,
 582                                      unsigned int sw_tail_old)
 583 {
 584         for (; sw_tail_old != ring->sw_tail;
 585                 sw_tail_old = aq_ring_next_dx(ring, sw_tail_old)) {
 586                 struct hw_atl_rxd_s *rxd =
 587                         (struct hw_atl_rxd_s *)&ring->dx_ring[sw_tail_old *
 588                                                         HW_ATL_B0_RXD_SIZE];
 589
 590                 struct aq_ring_buff_s *buff = &ring->buff_ring[sw_tail_old];
 591
 592                 rxd->buf_addr = buff->pa;
 593                 rxd->hdr_addr = 0U;
 594         }
 595
 596         reg_rx_dma_desc_tail_ptr_set(self, sw_tail_old, ring->idx);
 597
 598         return aq_hw_err_from_flags(self);
 599 }
 600
 601 static int hw_atl_b0_hw_ring_tx_head_update(struct aq_hw_s *self,
 602                                             struct aq_ring_s *ring)
 603 {
 604         int err = 0;
 605         unsigned int hw_head_ = tdm_tx_desc_head_ptr_get(self, ring->idx);
 606
 607         if (aq_utils_obj_test(&self->header.flags, AQ_HW_FLAG_ERR_UNPLUG)) {
 608                 err = -ENXIO;
 609                 goto err_exit;
 610         }
 611         ring->hw_head = hw_head_;
 612         err = aq_hw_err_from_flags(self);
 613
 614 err_exit:
 615         return err;
 616 }
 617
 618 static int hw_atl_b0_hw_ring_rx_receive(struct aq_hw_s *self,
 619                                         struct aq_ring_s *ring)
 620 {
 621         struct device *ndev = aq_nic_get_dev(ring->aq_nic);
 622
 623         for (; ring->hw_head != ring->sw_tail;
 624                 ring->hw_head = aq_ring_next_dx(ring, ring->hw_head)) {
 625                 struct aq_ring_buff_s *buff = NULL;
 626                 struct hw_atl_rxd_wb_s *rxd_wb = (struct hw_atl_rxd_wb_s *)
 627                         &ring->dx_ring[ring->hw_head * HW_ATL_B0_RXD_SIZE];
 628
 629                 unsigned int is_err = 1U;
 630                 unsigned int is_rx_check_sum_enabled = 0U;
 631                 unsigned int pkt_type = 0U;
 632
 633                 if (!(rxd_wb->status & 0x1U)) { /* RxD is not done */
 634                         break;
 635                 }
 636
 637                 buff = &ring->buff_ring[ring->hw_head];
 638
 639                 is_err = (0x0000003CU & rxd_wb->status);
 640
 641                 is_rx_check_sum_enabled = (rxd_wb->type) & (0x3U << 19);
 642                 is_err &= ~0x20U; /* exclude validity bit */
 643
 644                 pkt_type = 0xFFU & (rxd_wb->type >> 4);
 645
 646                 if (is_rx_check_sum_enabled) {
 647                         if (0x0U == (pkt_type & 0x3U))
 648                                 buff->is_ip_cso = (is_err & 0x08U) ? 0U : 1U;
 649
 650                         if (0x4U == (pkt_type & 0x1CU))
 651                                 buff->is_udp_cso = buff->is_cso_err ? 0U : 1U;
 652                         else if (0x0U == (pkt_type & 0x1CU))
 653                                 buff->is_tcp_cso = buff->is_cso_err ? 0U : 1U;
 654                 }
 655
 656                 is_err &= ~0x18U;
 657
 658                 dma_unmap_page(ndev, buff->pa, buff->len, DMA_FROM_DEVICE);
 659
 660                 if (is_err || rxd_wb->type & 0x1000U) {
 661                         /* status error or DMA error */
 662                         buff->is_error = 1U;
 663                 } else {
 664                         if (self->aq_nic_cfg->is_rss) {
 665                                 /* last 4 byte */
 666                                 u16 rss_type = rxd_wb->type & 0xFU;
 667
 668                                 if (rss_type && rss_type < 0x8U) {
 669                                         buff->is_hash_l4 = (rss_type == 0x4 ||
 670                                         rss_type == 0x5);
 671                                         buff->rss_hash = rxd_wb->rss_hash;
 672                                 }
 673                         }
 674
 675                         if (HW_ATL_B0_RXD_WB_STAT2_EOP & rxd_wb->status) {
 676                                 buff->len = rxd_wb->pkt_len %
 677                                         AQ_CFG_RX_FRAME_MAX;
 678                                 buff->len = buff->len ?
 679                                         buff->len : AQ_CFG_RX_FRAME_MAX;
 680                                 buff->next = 0U;
 681                                 buff->is_eop = 1U;
 682                         } else {
 683                                 if (HW_ATL_B0_RXD_WB_STAT2_RSCCNT &
 684                                         rxd_wb->status) {
 685                                         /* LRO */
 686                                         buff->next = rxd_wb->next_desc_ptr;
 687                                         ++ring->stats.rx.lro_packets;
 688                                 } else {
 689                                         /* jumbo */
 690                                         buff->next =
 691                                                 aq_ring_next_dx(ring,
 692                                                                 ring->hw_head);
 693                                         ++ring->stats.rx.jumbo_packets;
 694                                 }
 695                         }
 696                 }
 697         }
 698
 699         return aq_hw_err_from_flags(self);
 700 }
 701
 702 static int hw_atl_b0_hw_irq_enable(struct aq_hw_s *self, u64 mask)
 703 {
 704         itr_irq_msk_setlsw_set(self, LODWORD(mask));
 705         return aq_hw_err_from_flags(self);
 706 }
 707
 708 static int hw_atl_b0_hw_irq_disable(struct aq_hw_s *self, u64 mask)
 709 {
 710         itr_irq_msk_clearlsw_set(self, LODWORD(mask));
 711         itr_irq_status_clearlsw_set(self, LODWORD(mask));
 712
 713         atomic_inc(&PHAL_ATLANTIC_B0->dpc);
 714         return aq_hw_err_from_flags(self);
 715 }
 716
 717 static int hw_atl_b0_hw_irq_read(struct aq_hw_s *self, u64 *mask)
 718 {
 719         *mask = itr_irq_statuslsw_get(self);
 720         return aq_hw_err_from_flags(self);
 721 }
 722
 723 #define IS_FILTER_ENABLED(_F_) ((packet_filter & (_F_)) ? 1U : 0U)
 724
 725 static int hw_atl_b0_hw_packet_filter_set(struct aq_hw_s *self,
 726                                           unsigned int packet_filter)
 727 {
 728         unsigned int i = 0U;
 729
 730         rpfl2promiscuous_mode_en_set(self, IS_FILTER_ENABLED(IFF_PROMISC));
 731         rpfl2multicast_flr_en_set(self,
 732                                   IS_FILTER_ENABLED(IFF_MULTICAST), 0);
 733
 734         rpfl2_accept_all_mc_packets_set(self,
 735                                         IS_FILTER_ENABLED(IFF_ALLMULTI));
 736
 737         rpfl2broadcast_en_set(self, IS_FILTER_ENABLED(IFF_BROADCAST));
 738
 739         self->aq_nic_cfg->is_mc_list_enabled = IS_FILTER_ENABLED(IFF_MULTICAST);
 740
 741         for (i = HW_ATL_B0_MAC_MIN; i < HW_ATL_B0_MAC_MAX; ++i)
 742                 rpfl2_uc_flr_en_set(self,
 743                                     (self->aq_nic_cfg->is_mc_list_enabled &&
 744                                     (i <= self->aq_nic_cfg->mc_list_count)) ?
 745                                     1U : 0U, i);
 746
 747         return aq_hw_err_from_flags(self);
 748 }
 749
 750 #undef IS_FILTER_ENABLED
 751
 752 static int hw_atl_b0_hw_multicast_list_set(struct aq_hw_s *self,
 753                                            u8 ar_mac
 754                                            [AQ_CFG_MULTICAST_ADDRESS_MAX]
 755                                            [ETH_ALEN],
 756                                            u32 count)
 757 {
 758         int err = 0;
 759
 760         if (count > (HW_ATL_B0_MAC_MAX - HW_ATL_B0_MAC_MIN)) {
 761                 err = -EBADRQC;
 762                 goto err_exit;
 763         }
 764         for (self->aq_nic_cfg->mc_list_count = 0U;
 765                         self->aq_nic_cfg->mc_list_count < count;
 766                         ++self->aq_nic_cfg->mc_list_count) {
 767                 u32 i = self->aq_nic_cfg->mc_list_count;
 768                 u32 h = (ar_mac[i][0] << 8) | (ar_mac[i][1]);
 769                 u32 l = (ar_mac[i][2] << 24) | (ar_mac[i][3] << 16) |
 770                                         (ar_mac[i][4] << 8) | ar_mac[i][5];
 771
 772                 rpfl2_uc_flr_en_set(self, 0U, HW_ATL_B0_MAC_MIN + i);
 773
 774                 rpfl2unicast_dest_addresslsw_set(self,
 775                                                  l, HW_ATL_B0_MAC_MIN + i);
 776
 777                 rpfl2unicast_dest_addressmsw_set(self,
 778                                                  h, HW_ATL_B0_MAC_MIN + i);
 779
 780                 rpfl2_uc_flr_en_set(self,
 781                                     (self->aq_nic_cfg->is_mc_list_enabled),
 782                                     HW_ATL_B0_MAC_MIN + i);
 783         }
 784
 785         err = aq_hw_err_from_flags(self);
 786
 787 err_exit:
 788         return err;
 789 }
 790
 791 static int hw_atl_b0_hw_interrupt_moderation_set(struct aq_hw_s *self,
 792                                                  bool itr_enabled)
 793 {
 794         unsigned int i = 0U;
 795
 796         if (itr_enabled && self->aq_nic_cfg->itr) {
 797                 tdm_tx_desc_wr_wb_irq_en_set(self, 0U);
 798                 tdm_tdm_intr_moder_en_set(self, 1U);
 799                 rdm_rx_desc_wr_wb_irq_en_set(self, 0U);
 800                 rdm_rdm_intr_moder_en_set(self, 1U);
 801
 802                 PHAL_ATLANTIC_B0->itr_tx = 2U;
 803                 PHAL_ATLANTIC_B0->itr_rx = 2U;
 804
 805                 if (self->aq_nic_cfg->itr != 0xFFFFU) {
 806                         unsigned int max_timer = self->aq_nic_cfg->itr / 2U;
 807                         unsigned int min_timer = self->aq_nic_cfg->itr / 32U;
 808
 809                         max_timer = min(0x1FFU, max_timer);
 810                         min_timer = min(0xFFU, min_timer);
 811
 812                         PHAL_ATLANTIC_B0->itr_tx |= min_timer << 0x8U;
 813                         PHAL_ATLANTIC_B0->itr_tx |= max_timer << 0x10U;
 814                         PHAL_ATLANTIC_B0->itr_rx |= min_timer << 0x8U;
 815                         PHAL_ATLANTIC_B0->itr_rx |= max_timer << 0x10U;
 816                 } else {
 817                         static unsigned int hw_atl_b0_timers_table_tx_[][2] = {
 818                                 {0xffU, 0xffU}, /* 10Gbit */
 819                                 {0xffU, 0x1ffU}, /* 5Gbit */
 820                                 {0xffU, 0x1ffU}, /* 5Gbit 5GS */
 821                                 {0xffU, 0x1ffU}, /* 2.5Gbit */
 822                                 {0xffU, 0x1ffU}, /* 1Gbit */
 823                                 {0xffU, 0x1ffU}, /* 100Mbit */
 824                         };
 825
 826                         static unsigned int hw_atl_b0_timers_table_rx_[][2] = {
 827                                 {0x6U, 0x38U},/* 10Gbit */
 828                                 {0xCU, 0x70U},/* 5Gbit */
 829                                 {0xCU, 0x70U},/* 5Gbit 5GS */
 830                                 {0x18U, 0xE0U},/* 2.5Gbit */
 831                                 {0x30U, 0x80U},/* 1Gbit */
 832                                 {0x4U, 0x50U},/* 100Mbit */
 833                         };
 834
 835                         unsigned int speed_index =
 836                                         hw_atl_utils_mbps_2_speed_index(
 837                                                 self->aq_link_status.mbps);
 838
 839                         PHAL_ATLANTIC_B0->itr_tx |=
 840                                 hw_atl_b0_timers_table_tx_[speed_index]
 841                                 [0] << 0x8U; /* set min timer value */
 842                         PHAL_ATLANTIC_B0->itr_tx |=
 843                                 hw_atl_b0_timers_table_tx_[speed_index]
 844                                 [1] << 0x10U; /* set max timer value */
 845
 846                         PHAL_ATLANTIC_B0->itr_rx |=
 847                                 hw_atl_b0_timers_table_rx_[speed_index]
 848                                 [0] << 0x8U; /* set min timer value */
 849                         PHAL_ATLANTIC_B0->itr_rx |=
 850                                 hw_atl_b0_timers_table_rx_[speed_index]
 851                                 [1] << 0x10U; /* set max timer value */
 852                 }
 853         } else {
 854                 tdm_tx_desc_wr_wb_irq_en_set(self, 1U);
 855                 tdm_tdm_intr_moder_en_set(self, 0U);
 856                 rdm_rx_desc_wr_wb_irq_en_set(self, 1U);
 857                 rdm_rdm_intr_moder_en_set(self, 0U);
 858                 PHAL_ATLANTIC_B0->itr_tx = 0U;
 859                 PHAL_ATLANTIC_B0->itr_rx = 0U;
 860         }
 861
 862         for (i = HW_ATL_B0_RINGS_MAX; i--;) {
 863                 reg_tx_intr_moder_ctrl_set(self,
 864                                            PHAL_ATLANTIC_B0->itr_tx, i);
 865                 reg_rx_intr_moder_ctrl_set(self,
 866                                            PHAL_ATLANTIC_B0->itr_rx, i);
 867         }
 868
 869         return aq_hw_err_from_flags(self);
 870 }
 871
 872 static int hw_atl_b0_hw_stop(struct aq_hw_s *self)
 873 {
 874         hw_atl_b0_hw_irq_disable(self, HW_ATL_B0_INT_MASK);
 875         return aq_hw_err_from_flags(self);
 876 }
 877
 878 static int hw_atl_b0_hw_ring_tx_stop(struct aq_hw_s *self,
 879                                      struct aq_ring_s *ring)
 880 {
 881         tdm_tx_desc_en_set(self, 0U, ring->idx);
 882         return aq_hw_err_from_flags(self);
 883 }
 884
 885 static int hw_atl_b0_hw_ring_rx_stop(struct aq_hw_s *self,
 886                                      struct aq_ring_s *ring)
 887 {
 888         rdm_rx_desc_en_set(self, 0U, ring->idx);
 889         return aq_hw_err_from_flags(self);
 890 }
 891
 892 static int hw_atl_b0_hw_set_speed(struct aq_hw_s *self, u32 speed)
 893 {
 894         int err = 0;
 895
 896         err = hw_atl_utils_mpi_set_speed(self, speed, MPI_INIT);
 897         if (err < 0)
 898                 goto err_exit;
 899
 900 err_exit:
 901         return err;
 902 }
 903
 904 static struct aq_hw_ops hw_atl_ops_ = {
 905         .create               = hw_atl_b0_create,
 906         .destroy              = hw_atl_b0_destroy,
 907         .get_hw_caps          = hw_atl_b0_get_hw_caps,
 908
 909         .hw_get_mac_permanent = hw_atl_utils_get_mac_permanent,
 910         .hw_set_mac_address   = hw_atl_b0_hw_mac_addr_set,
 911         .hw_get_link_status   = hw_atl_utils_mpi_get_link_status,
 912         .hw_set_link_speed    = hw_atl_b0_hw_set_speed,
 913         .hw_init              = hw_atl_b0_hw_init,
 914         .hw_deinit            = hw_atl_utils_hw_deinit,
 915         .hw_set_power         = hw_atl_utils_hw_set_power,
 916         .hw_reset             = hw_atl_b0_hw_reset,
 917         .hw_start             = hw_atl_b0_hw_start,
 918         .hw_ring_tx_start     = hw_atl_b0_hw_ring_tx_start,
 919         .hw_ring_tx_stop      = hw_atl_b0_hw_ring_tx_stop,
 920         .hw_ring_rx_start     = hw_atl_b0_hw_ring_rx_start,
 921         .hw_ring_rx_stop      = hw_atl_b0_hw_ring_rx_stop,
 922         .hw_stop              = hw_atl_b0_hw_stop,
 923
 924         .hw_ring_tx_xmit         = hw_atl_b0_hw_ring_tx_xmit,
 925         .hw_ring_tx_head_update  = hw_atl_b0_hw_ring_tx_head_update,
 926
 927         .hw_ring_rx_receive      = hw_atl_b0_hw_ring_rx_receive,
 928         .hw_ring_rx_fill         = hw_atl_b0_hw_ring_rx_fill,
 929
 930         .hw_irq_enable           = hw_atl_b0_hw_irq_enable,
 931         .hw_irq_disable          = hw_atl_b0_hw_irq_disable,
 932         .hw_irq_read             = hw_atl_b0_hw_irq_read,
 933
 934         .hw_ring_rx_init             = hw_atl_b0_hw_ring_rx_init,
 935         .hw_ring_tx_init             = hw_atl_b0_hw_ring_tx_init,
 936         .hw_packet_filter_set        = hw_atl_b0_hw_packet_filter_set,
 937         .hw_multicast_list_set       = hw_atl_b0_hw_multicast_list_set,
 938         .hw_interrupt_moderation_set = hw_atl_b0_hw_interrupt_moderation_set,
 939         .hw_rss_set                  = hw_atl_b0_hw_rss_set,
 940         .hw_rss_hash_set             = hw_atl_b0_hw_rss_hash_set,
 941         .hw_get_regs                 = hw_atl_utils_hw_get_regs,
 942         .hw_get_hw_stats             = hw_atl_utils_get_hw_stats,
 943         .hw_get_fw_version           = hw_atl_utils_get_fw_version,
 944 };
 945
 946 struct aq_hw_ops *hw_atl_b0_get_ops_by_id(struct pci_dev *pdev)
 947 {
 948         bool is_vid_ok = (pdev->vendor == PCI_VENDOR_ID_AQUANTIA);
 949         bool is_did_ok = ((pdev->device == HW_ATL_DEVICE_ID_0001) ||
 950                         (pdev->device == HW_ATL_DEVICE_ID_D100) ||
 951                         (pdev->device == HW_ATL_DEVICE_ID_D107) ||
 952                         (pdev->device == HW_ATL_DEVICE_ID_D108) ||
 953                         (pdev->device == HW_ATL_DEVICE_ID_D109));
 954
 955         bool is_rev_ok = (pdev->revision == 2U);
 956
 957         return (is_vid_ok && is_did_ok && is_rev_ok) ? &hw_atl_ops_ : NULL;
 958 }