drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.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_a0.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_a0.h"
  16 #include "hw_atl_utils.h"
  17 #include "hw_atl_llh.h"
  18 #include "hw_atl_a0_internal.h"
  19
  20 static int hw_atl_a0_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_a0_hw_caps_, sizeof(*aq_hw_caps));
  24         return 0;
  25 }
  26
  27 static struct aq_hw_s *hw_atl_a0_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_a0_destroy(struct aq_hw_s *self)
  46 {
  47         kfree(self);
  48 }
  49
  50 static int hw_atl_a0_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_a0_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_A0_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_A0_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_a0_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_a0_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_A0_RSS_REDIRECTION_MAX *
 175                                         HW_ATL_A0_RSS_REDIRECTION_BITS / 16U)];
 176
 177         memset(bitary, 0, sizeof(bitary));
 178
 179         for (i = HW_ATL_A0_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_a0_hw_offload_set(struct aq_hw_s *self,
 201                                     struct aq_nic_cfg_s *aq_nic_cfg)
 202 {
 203         int err = 0;
 204
 205         /* TX checksums offloads*/
 206         tpo_ipv4header_crc_offload_en_set(self, 1);
 207         tpo_tcp_udp_crc_offload_en_set(self, 1);
 208         if (err < 0)
 209                 goto err_exit;
 210
 211         /* RX checksums offloads*/
 212         rpo_ipv4header_crc_offload_en_set(self, 1);
 213         rpo_tcp_udp_crc_offload_en_set(self, 1);
 214         if (err < 0)
 215                 goto err_exit;
 216
 217         /* LSO offloads*/
 218         tdm_large_send_offload_en_set(self, 0xFFFFFFFFU);
 219         if (err < 0)
 220                 goto err_exit;
 221
 222         err = aq_hw_err_from_flags(self);
 223
 224 err_exit:
 225         return err;
 226 }
 227
 228 static int hw_atl_a0_hw_init_tx_path(struct aq_hw_s *self)
 229 {
 230         thm_lso_tcp_flag_of_first_pkt_set(self, 0x0FF6U);
 231         thm_lso_tcp_flag_of_middle_pkt_set(self, 0x0FF6U);
 232         thm_lso_tcp_flag_of_last_pkt_set(self, 0x0F7FU);
 233
 234         /* Tx interrupts */
 235         tdm_tx_desc_wr_wb_irq_en_set(self, 1U);
 236
 237         /* misc */
 238         aq_hw_write_reg(self, 0x00007040U, IS_CHIP_FEATURE(TPO2) ?
 239                         0x00010000U : 0x00000000U);
 240         tdm_tx_dca_en_set(self, 0U);
 241         tdm_tx_dca_mode_set(self, 0U);
 242
 243         tpb_tx_path_scp_ins_en_set(self, 1U);
 244
 245         return aq_hw_err_from_flags(self);
 246 }
 247
 248 static int hw_atl_a0_hw_init_rx_path(struct aq_hw_s *self)
 249 {
 250         struct aq_nic_cfg_s *cfg = self->aq_nic_cfg;
 251         int i;
 252
 253         /* Rx TC/RSS number config */
 254         rpb_rpf_rx_traf_class_mode_set(self, 1U);
 255
 256         /* Rx flow control */
 257         rpb_rx_flow_ctl_mode_set(self, 1U);
 258
 259         /* RSS Ring selection */
 260         reg_rx_flr_rss_control1set(self, cfg->is_rss ?
 261                                         0xB3333333U : 0x00000000U);
 262
 263         /* Multicast filters */
 264         for (i = HW_ATL_A0_MAC_MAX; i--;) {
 265                 rpfl2_uc_flr_en_set(self, (i == 0U) ? 1U : 0U, i);
 266                 rpfl2unicast_flr_act_set(self, 1U, i);
 267         }
 268
 269         reg_rx_flr_mcst_flr_msk_set(self, 0x00000000U);
 270         reg_rx_flr_mcst_flr_set(self, 0x00010FFFU, 0U);
 271
 272         /* Vlan filters */
 273         rpf_vlan_outer_etht_set(self, 0x88A8U);
 274         rpf_vlan_inner_etht_set(self, 0x8100U);
 275         rpf_vlan_prom_mode_en_set(self, 1);
 276
 277         /* Rx Interrupts */
 278         rdm_rx_desc_wr_wb_irq_en_set(self, 1U);
 279
 280         /* misc */
 281         rpfl2broadcast_flr_act_set(self, 1U);
 282         rpfl2broadcast_count_threshold_set(self, 0xFFFFU & (~0U / 256U));
 283
 284         rdm_rx_dca_en_set(self, 0U);
 285         rdm_rx_dca_mode_set(self, 0U);
 286
 287         return aq_hw_err_from_flags(self);
 288 }
 289
 290 static int hw_atl_a0_hw_mac_addr_set(struct aq_hw_s *self, u8 *mac_addr)
 291 {
 292         int err = 0;
 293         unsigned int h = 0U;
 294         unsigned int l = 0U;
 295
 296         if (!mac_addr) {
 297                 err = -EINVAL;
 298                 goto err_exit;
 299         }
 300         h = (mac_addr[0] << 8) | (mac_addr[1]);
 301         l = (mac_addr[2] << 24) | (mac_addr[3] << 16) |
 302                 (mac_addr[4] << 8) | mac_addr[5];
 303
 304         rpfl2_uc_flr_en_set(self, 0U, HW_ATL_A0_MAC);
 305         rpfl2unicast_dest_addresslsw_set(self, l, HW_ATL_A0_MAC);
 306         rpfl2unicast_dest_addressmsw_set(self, h, HW_ATL_A0_MAC);
 307         rpfl2_uc_flr_en_set(self, 1U, HW_ATL_A0_MAC);
 308
 309         err = aq_hw_err_from_flags(self);
 310
 311 err_exit:
 312         return err;
 313 }
 314
 315 static int hw_atl_a0_hw_init(struct aq_hw_s *self,
 316                              struct aq_nic_cfg_s *aq_nic_cfg,
 317                              u8 *mac_addr)
 318 {
 319         static u32 aq_hw_atl_igcr_table_[4][2] = {
 320                 { 0x20000000U, 0x20000000U }, /* AQ_IRQ_INVALID */
 321                 { 0x20000080U, 0x20000080U }, /* AQ_IRQ_LEGACY */
 322                 { 0x20000021U, 0x20000025U }, /* AQ_IRQ_MSI */
 323                 { 0x20000022U, 0x20000026U }  /* AQ_IRQ_MSIX */
 324         };
 325
 326         int err = 0;
 327
 328         self->aq_nic_cfg = aq_nic_cfg;
 329
 330         hw_atl_utils_hw_chip_features_init(self,
 331                                            &PHAL_ATLANTIC_A0->chip_features);
 332
 333         hw_atl_a0_hw_init_tx_path(self);
 334         hw_atl_a0_hw_init_rx_path(self);
 335
 336         hw_atl_a0_hw_mac_addr_set(self, mac_addr);
 337
 338         hw_atl_utils_mpi_set(self, MPI_INIT, aq_nic_cfg->link_speed_msk);
 339
 340         reg_tx_dma_debug_ctl_set(self, 0x800000b8U);
 341         reg_tx_dma_debug_ctl_set(self, 0x000000b8U);
 342
 343         hw_atl_a0_hw_qos_set(self);
 344         hw_atl_a0_hw_rss_set(self, &aq_nic_cfg->aq_rss);
 345         hw_atl_a0_hw_rss_hash_set(self, &aq_nic_cfg->aq_rss);
 346
 347         err = aq_hw_err_from_flags(self);
 348         if (err < 0)
 349                 goto err_exit;
 350
 351         /* Interrupts */
 352         reg_irq_glb_ctl_set(self,
 353                             aq_hw_atl_igcr_table_[aq_nic_cfg->irq_type]
 354                                                  [(aq_nic_cfg->vecs > 1U) ?
 355                                                  1 : 0]);
 356
 357         itr_irq_auto_masklsw_set(self, aq_nic_cfg->aq_hw_caps->irq_mask);
 358
 359         /* Interrupts */
 360         reg_gen_irq_map_set(self,
 361                             ((HW_ATL_A0_ERR_INT << 0x18) | (1U << 0x1F)) |
 362                             ((HW_ATL_A0_ERR_INT << 0x10) | (1U << 0x17)) |
 363                             ((HW_ATL_A0_ERR_INT << 8) | (1U << 0xF)) |
 364                             ((HW_ATL_A0_ERR_INT) | (1U << 0x7)), 0U);
 365
 366         hw_atl_a0_hw_offload_set(self, aq_nic_cfg);
 367
 368 err_exit:
 369         return err;
 370 }
 371
 372 static int hw_atl_a0_hw_ring_tx_start(struct aq_hw_s *self,
 373                                       struct aq_ring_s *ring)
 374 {
 375         tdm_tx_desc_en_set(self, 1, ring->idx);
 376         return aq_hw_err_from_flags(self);
 377 }
 378
 379 static int hw_atl_a0_hw_ring_rx_start(struct aq_hw_s *self,
 380                                       struct aq_ring_s *ring)
 381 {
 382         rdm_rx_desc_en_set(self, 1, ring->idx);
 383         return aq_hw_err_from_flags(self);
 384 }
 385
 386 static int hw_atl_a0_hw_start(struct aq_hw_s *self)
 387 {
 388         tpb_tx_buff_en_set(self, 1);
 389         rpb_rx_buff_en_set(self, 1);
 390         return aq_hw_err_from_flags(self);
 391 }
 392
 393 static int hw_atl_a0_hw_tx_ring_tail_update(struct aq_hw_s *self,
 394                                             struct aq_ring_s *ring)
 395 {
 396         reg_tx_dma_desc_tail_ptr_set(self, ring->sw_tail, ring->idx);
 397         return 0;
 398 }
 399
 400 static int hw_atl_a0_hw_ring_tx_xmit(struct aq_hw_s *self,
 401                                      struct aq_ring_s *ring,
 402                                      unsigned int frags)
 403 {
 404         struct aq_ring_buff_s *buff = NULL;
 405         struct hw_atl_txd_s *txd = NULL;
 406         unsigned int buff_pa_len = 0U;
 407         unsigned int pkt_len = 0U;
 408         unsigned int frag_count = 0U;
 409         bool is_gso = false;
 410
 411         buff = &ring->buff_ring[ring->sw_tail];
 412         pkt_len = (buff->is_eop && buff->is_sop) ? buff->len : buff->len_pkt;
 413
 414         for (frag_count = 0; frag_count < frags; frag_count++) {
 415                 txd = (struct hw_atl_txd_s *)&ring->dx_ring[ring->sw_tail *
 416                                                 HW_ATL_A0_TXD_SIZE];
 417                 txd->ctl = 0;
 418                 txd->ctl2 = 0;
 419                 txd->buf_addr = 0;
 420
 421                 buff = &ring->buff_ring[ring->sw_tail];
 422
 423                 if (buff->is_txc) {
 424                         txd->ctl |= (buff->len_l3 << 31) |
 425                                 (buff->len_l2 << 24) |
 426                                 HW_ATL_A0_TXD_CTL_CMD_TCP |
 427                                 HW_ATL_A0_TXD_CTL_DESC_TYPE_TXC;
 428                         txd->ctl2 |= (buff->mss << 16) |
 429                                 (buff->len_l4 << 8) |
 430                                 (buff->len_l3 >> 1);
 431
 432                         pkt_len -= (buff->len_l4 +
 433                                     buff->len_l3 +
 434                                     buff->len_l2);
 435                         is_gso = true;
 436
 437                         if (buff->is_ipv6)
 438                                 txd->ctl |= HW_ATL_A0_TXD_CTL_CMD_IPV6;
 439                 } else {
 440                         buff_pa_len = buff->len;
 441
 442                         txd->buf_addr = buff->pa;
 443                         txd->ctl |= (HW_ATL_A0_TXD_CTL_BLEN &
 444                                                 ((u32)buff_pa_len << 4));
 445                         txd->ctl |= HW_ATL_A0_TXD_CTL_DESC_TYPE_TXD;
 446                         /* PAY_LEN */
 447                         txd->ctl2 |= HW_ATL_A0_TXD_CTL2_LEN & (pkt_len << 14);
 448
 449                         if (is_gso) {
 450                                 txd->ctl |= HW_ATL_A0_TXD_CTL_CMD_LSO;
 451                                 txd->ctl2 |= HW_ATL_A0_TXD_CTL2_CTX_EN;
 452                         }
 453
 454                         /* Tx checksum offloads */
 455                         if (buff->is_ip_cso)
 456                                 txd->ctl |= HW_ATL_A0_TXD_CTL_CMD_IPCSO;
 457
 458                         if (buff->is_udp_cso || buff->is_tcp_cso)
 459                                 txd->ctl |= HW_ATL_A0_TXD_CTL_CMD_TUCSO;
 460
 461                         if (unlikely(buff->is_eop)) {
 462                                 txd->ctl |= HW_ATL_A0_TXD_CTL_EOP;
 463                                 txd->ctl |= HW_ATL_A0_TXD_CTL_CMD_WB;
 464                                 is_gso = false;
 465                         }
 466                 }
 467
 468                 ring->sw_tail = aq_ring_next_dx(ring, ring->sw_tail);
 469         }
 470
 471         hw_atl_a0_hw_tx_ring_tail_update(self, ring);
 472         return aq_hw_err_from_flags(self);
 473 }
 474
 475 static int hw_atl_a0_hw_ring_rx_init(struct aq_hw_s *self,
 476                                      struct aq_ring_s *aq_ring,
 477                                      struct aq_ring_param_s *aq_ring_param)
 478 {
 479         u32 dma_desc_addr_lsw = (u32)aq_ring->dx_ring_pa;
 480         u32 dma_desc_addr_msw = (u32)(((u64)aq_ring->dx_ring_pa) >> 32);
 481
 482         rdm_rx_desc_en_set(self, false, aq_ring->idx);
 483
 484         rdm_rx_desc_head_splitting_set(self, 0U, aq_ring->idx);
 485
 486         reg_rx_dma_desc_base_addresslswset(self, dma_desc_addr_lsw,
 487                                            aq_ring->idx);
 488
 489         reg_rx_dma_desc_base_addressmswset(self,
 490                                            dma_desc_addr_msw, aq_ring->idx);
 491
 492         rdm_rx_desc_len_set(self, aq_ring->size / 8U, aq_ring->idx);
 493
 494         rdm_rx_desc_data_buff_size_set(self,
 495                                        AQ_CFG_RX_FRAME_MAX / 1024U,
 496                                        aq_ring->idx);
 497
 498         rdm_rx_desc_head_buff_size_set(self, 0U, aq_ring->idx);
 499         rdm_rx_desc_head_splitting_set(self, 0U, aq_ring->idx);
 500         rpo_rx_desc_vlan_stripping_set(self, 0U, aq_ring->idx);
 501
 502         /* Rx ring set mode */
 503
 504         /* Mapping interrupt vector */
 505         itr_irq_map_rx_set(self, aq_ring_param->vec_idx, aq_ring->idx);
 506         itr_irq_map_en_rx_set(self, true, aq_ring->idx);
 507
 508         rdm_cpu_id_set(self, aq_ring_param->cpu, aq_ring->idx);
 509         rdm_rx_desc_dca_en_set(self, 0U, aq_ring->idx);
 510         rdm_rx_head_dca_en_set(self, 0U, aq_ring->idx);
 511         rdm_rx_pld_dca_en_set(self, 0U, aq_ring->idx);
 512
 513         return aq_hw_err_from_flags(self);
 514 }
 515
 516 static int hw_atl_a0_hw_ring_tx_init(struct aq_hw_s *self,
 517                                      struct aq_ring_s *aq_ring,
 518                                      struct aq_ring_param_s *aq_ring_param)
 519 {
 520         u32 dma_desc_lsw_addr = (u32)aq_ring->dx_ring_pa;
 521         u32 dma_desc_msw_addr = (u32)(((u64)aq_ring->dx_ring_pa) >> 32);
 522
 523         reg_tx_dma_desc_base_addresslswset(self, dma_desc_lsw_addr,
 524                                            aq_ring->idx);
 525
 526         reg_tx_dma_desc_base_addressmswset(self, dma_desc_msw_addr,
 527                                            aq_ring->idx);
 528
 529         tdm_tx_desc_len_set(self, aq_ring->size / 8U, aq_ring->idx);
 530
 531         hw_atl_a0_hw_tx_ring_tail_update(self, aq_ring);
 532
 533         /* Set Tx threshold */
 534         tdm_tx_desc_wr_wb_threshold_set(self, 0U, aq_ring->idx);
 535
 536         /* Mapping interrupt vector */
 537         itr_irq_map_tx_set(self, aq_ring_param->vec_idx, aq_ring->idx);
 538         itr_irq_map_en_tx_set(self, true, aq_ring->idx);
 539
 540         tdm_cpu_id_set(self, aq_ring_param->cpu, aq_ring->idx);
 541         tdm_tx_desc_dca_en_set(self, 0U, aq_ring->idx);
 542
 543         return aq_hw_err_from_flags(self);
 544 }
 545
 546 static int hw_atl_a0_hw_ring_rx_fill(struct aq_hw_s *self,
 547                                      struct aq_ring_s *ring,
 548                                      unsigned int sw_tail_old)
 549 {
 550         for (; sw_tail_old != ring->sw_tail;
 551                 sw_tail_old = aq_ring_next_dx(ring, sw_tail_old)) {
 552                 struct hw_atl_rxd_s *rxd =
 553                         (struct hw_atl_rxd_s *)&ring->dx_ring[sw_tail_old *
 554                                                         HW_ATL_A0_RXD_SIZE];
 555
 556                 struct aq_ring_buff_s *buff = &ring->buff_ring[sw_tail_old];
 557
 558                 rxd->buf_addr = buff->pa;
 559                 rxd->hdr_addr = 0U;
 560         }
 561
 562         reg_rx_dma_desc_tail_ptr_set(self, sw_tail_old, ring->idx);
 563
 564         return aq_hw_err_from_flags(self);
 565 }
 566
 567 static int hw_atl_a0_hw_ring_tx_head_update(struct aq_hw_s *self,
 568                                             struct aq_ring_s *ring)
 569 {
 570         int err = 0;
 571         unsigned int hw_head_ = tdm_tx_desc_head_ptr_get(self, ring->idx);
 572
 573         if (aq_utils_obj_test(&self->header.flags, AQ_HW_FLAG_ERR_UNPLUG)) {
 574                 err = -ENXIO;
 575                 goto err_exit;
 576         }
 577         ring->hw_head = hw_head_;
 578         err = aq_hw_err_from_flags(self);
 579
 580 err_exit:
 581         return err;
 582 }
 583
 584 static int hw_atl_a0_hw_ring_rx_receive(struct aq_hw_s *self,
 585                                         struct aq_ring_s *ring)
 586 {
 587         struct device *ndev = aq_nic_get_dev(ring->aq_nic);
 588
 589         for (; ring->hw_head != ring->sw_tail;
 590                 ring->hw_head = aq_ring_next_dx(ring, ring->hw_head)) {
 591                 struct aq_ring_buff_s *buff = NULL;
 592                 struct hw_atl_rxd_wb_s *rxd_wb = (struct hw_atl_rxd_wb_s *)
 593                         &ring->dx_ring[ring->hw_head * HW_ATL_A0_RXD_SIZE];
 594
 595                 unsigned int is_err = 1U;
 596                 unsigned int is_rx_check_sum_enabled = 0U;
 597                 unsigned int pkt_type = 0U;
 598
 599                 if (!(rxd_wb->status & 0x5U)) { /* RxD is not done */
 600                         if ((1U << 4) &
 601                                 reg_rx_dma_desc_status_get(self, ring->idx)) {
 602                         rdm_rx_desc_en_set(self, false, ring->idx);
 603                         rdm_rx_desc_res_set(self, true, ring->idx);
 604                         rdm_rx_desc_res_set(self, false, ring->idx);
 605                         rdm_rx_desc_en_set(self, true, ring->idx);
 606                         }
 607
 608                         if (ring->hw_head ||
 609                             (rdm_rx_desc_head_ptr_get(self, ring->idx) < 2U)) {
 610                                 break;
 611                         } else if (!(rxd_wb->status & 0x1U)) {
 612                                 struct hw_atl_rxd_wb_s *rxd_wb1 =
 613                                         (struct hw_atl_rxd_wb_s *)
 614                                         (&ring->dx_ring[(1U) *
 615                                                 HW_ATL_A0_RXD_SIZE]);
 616
 617                                 if ((rxd_wb1->status & 0x1U)) {
 618                                         rxd_wb->pkt_len = 1514U;
 619                                         rxd_wb->status = 3U;
 620                                 } else {
 621                                         break;
 622                                 }
 623                         }
 624                 }
 625
 626                 buff = &ring->buff_ring[ring->hw_head];
 627
 628                 if (0x3U != (rxd_wb->status & 0x3U))
 629                         rxd_wb->status |= 4;
 630
 631                 is_err = (0x0000001CU & rxd_wb->status);
 632                 is_rx_check_sum_enabled = (rxd_wb->type) & (0x3U << 19);
 633                 pkt_type = 0xFFU & (rxd_wb->type >> 4);
 634
 635                 if (is_rx_check_sum_enabled) {
 636                         if (0x0U == (pkt_type & 0x3U))
 637                                 buff->is_ip_cso = (is_err & 0x08U) ? 0 : 1;
 638
 639                         if (0x4U == (pkt_type & 0x1CU))
 640                                 buff->is_udp_cso = (is_err & 0x10U) ? 0 : 1;
 641                         else if (0x0U == (pkt_type & 0x1CU))
 642                                 buff->is_tcp_cso = (is_err & 0x10U) ? 0 : 1;
 643                 }
 644
 645                 is_err &= ~0x18U;
 646                 is_err &= ~0x04U;
 647
 648                 dma_unmap_page(ndev, buff->pa, buff->len, DMA_FROM_DEVICE);
 649
 650                 if (is_err || rxd_wb->type & 0x1000U) {
 651                         /* status error or DMA error */
 652                         buff->is_error = 1U;
 653                 } else {
 654                         if (self->aq_nic_cfg->is_rss) {
 655                                 /* last 4 byte */
 656                                 u16 rss_type = rxd_wb->type & 0xFU;
 657
 658                                 if (rss_type && rss_type < 0x8U) {
 659                                         buff->is_hash_l4 = (rss_type == 0x4 ||
 660                                                         rss_type == 0x5);
 661                                         buff->rss_hash = rxd_wb->rss_hash;
 662                                 }
 663                         }
 664
 665                         if (HW_ATL_A0_RXD_WB_STAT2_EOP & rxd_wb->status) {
 666                                 buff->len = rxd_wb->pkt_len %
 667                                         AQ_CFG_RX_FRAME_MAX;
 668                                 buff->len = buff->len ?
 669                                         buff->len : AQ_CFG_RX_FRAME_MAX;
 670                                 buff->next = 0U;
 671                                 buff->is_eop = 1U;
 672                         } else {
 673                                 /* jumbo */
 674                                 buff->next = aq_ring_next_dx(ring,
 675                                                              ring->hw_head);
 676                                 ++ring->stats.rx.jumbo_packets;
 677                         }
 678                 }
 679         }
 680
 681         return aq_hw_err_from_flags(self);
 682 }
 683
 684 static int hw_atl_a0_hw_irq_enable(struct aq_hw_s *self, u64 mask)
 685 {
 686         itr_irq_msk_setlsw_set(self, LODWORD(mask) |
 687                                (1U << HW_ATL_A0_ERR_INT));
 688         return aq_hw_err_from_flags(self);
 689 }
 690
 691 static int hw_atl_a0_hw_irq_disable(struct aq_hw_s *self, u64 mask)
 692 {
 693         itr_irq_msk_clearlsw_set(self, LODWORD(mask));
 694         itr_irq_status_clearlsw_set(self, LODWORD(mask));
 695
 696         if ((1U << 16) & reg_gen_irq_status_get(self))
 697
 698                 atomic_inc(&PHAL_ATLANTIC_A0->dpc);
 699
 700         return aq_hw_err_from_flags(self);
 701 }
 702
 703 static int hw_atl_a0_hw_irq_read(struct aq_hw_s *self, u64 *mask)
 704 {
 705         *mask = itr_irq_statuslsw_get(self);
 706         return aq_hw_err_from_flags(self);
 707 }
 708
 709 #define IS_FILTER_ENABLED(_F_) ((packet_filter & (_F_)) ? 1U : 0U)
 710
 711 static int hw_atl_a0_hw_packet_filter_set(struct aq_hw_s *self,
 712                                           unsigned int packet_filter)
 713 {
 714         unsigned int i = 0U;
 715
 716         rpfl2promiscuous_mode_en_set(self, IS_FILTER_ENABLED(IFF_PROMISC));
 717         rpfl2multicast_flr_en_set(self, IS_FILTER_ENABLED(IFF_MULTICAST), 0);
 718         rpfl2broadcast_en_set(self, IS_FILTER_ENABLED(IFF_BROADCAST));
 719
 720         self->aq_nic_cfg->is_mc_list_enabled =
 721                         IS_FILTER_ENABLED(IFF_MULTICAST);
 722
 723         for (i = HW_ATL_A0_MAC_MIN; i < HW_ATL_A0_MAC_MAX; ++i)
 724                 rpfl2_uc_flr_en_set(self,
 725                                     (self->aq_nic_cfg->is_mc_list_enabled &&
 726                                     (i <= self->aq_nic_cfg->mc_list_count)) ?
 727                                     1U : 0U, i);
 728
 729         return aq_hw_err_from_flags(self);
 730 }
 731
 732 #undef IS_FILTER_ENABLED
 733
 734 static int hw_atl_a0_hw_multicast_list_set(struct aq_hw_s *self,
 735                                            u8 ar_mac
 736                                            [AQ_CFG_MULTICAST_ADDRESS_MAX]
 737                                            [ETH_ALEN],
 738                                            u32 count)
 739 {
 740         int err = 0;
 741
 742         if (count > (HW_ATL_A0_MAC_MAX - HW_ATL_A0_MAC_MIN)) {
 743                 err = EBADRQC;
 744                 goto err_exit;
 745         }
 746         for (self->aq_nic_cfg->mc_list_count = 0U;
 747                         self->aq_nic_cfg->mc_list_count < count;
 748                         ++self->aq_nic_cfg->mc_list_count) {
 749                 u32 i = self->aq_nic_cfg->mc_list_count;
 750                 u32 h = (ar_mac[i][0] << 8) | (ar_mac[i][1]);
 751                 u32 l = (ar_mac[i][2] << 24) | (ar_mac[i][3] << 16) |
 752                                         (ar_mac[i][4] << 8) | ar_mac[i][5];
 753
 754                 rpfl2_uc_flr_en_set(self, 0U, HW_ATL_A0_MAC_MIN + i);
 755
 756                 rpfl2unicast_dest_addresslsw_set(self,
 757                                                  l, HW_ATL_A0_MAC_MIN + i);
 758
 759                 rpfl2unicast_dest_addressmsw_set(self,
 760                                                  h, HW_ATL_A0_MAC_MIN + i);
 761
 762                 rpfl2_uc_flr_en_set(self,
 763                                     (self->aq_nic_cfg->is_mc_list_enabled),
 764                                     HW_ATL_A0_MAC_MIN + i);
 765         }
 766
 767         err = aq_hw_err_from_flags(self);
 768
 769 err_exit:
 770         return err;
 771 }
 772
 773 static int hw_atl_a0_hw_interrupt_moderation_set(struct aq_hw_s *self,
 774                                                  bool itr_enabled)
 775 {
 776         unsigned int i = 0U;
 777
 778         if (itr_enabled && self->aq_nic_cfg->itr) {
 779                 if (self->aq_nic_cfg->itr != 0xFFFFU) {
 780                         u32 itr_ = (self->aq_nic_cfg->itr >> 1);
 781
 782                         itr_ = min(AQ_CFG_IRQ_MASK, itr_);
 783
 784                         PHAL_ATLANTIC_A0->itr_rx = 0x80000000U |
 785                                         (itr_ << 0x10);
 786                 } else  {
 787                         u32 n = 0xFFFFU & aq_hw_read_reg(self, 0x00002A00U);
 788
 789                         if (n < self->aq_link_status.mbps) {
 790                                 PHAL_ATLANTIC_A0->itr_rx = 0U;
 791                         } else {
 792                                 static unsigned int hw_timers_tbl_[] = {
 793                                         0x01CU, /* 10Gbit */
 794                                         0x039U, /* 5Gbit */
 795                                         0x039U, /* 5Gbit 5GS */
 796                                         0x073U, /* 2.5Gbit */
 797                                         0x120U, /* 1Gbit */
 798                                         0x1FFU, /* 100Mbit */
 799                                 };
 800
 801                                 unsigned int speed_index =
 802                                         hw_atl_utils_mbps_2_speed_index(
 803                                                 self->aq_link_status.mbps);
 804
 805                                 PHAL_ATLANTIC_A0->itr_rx =
 806                                         0x80000000U |
 807                                         (hw_timers_tbl_[speed_index] << 0x10U);
 808                         }
 809
 810                         aq_hw_write_reg(self, 0x00002A00U, 0x40000000U);
 811                         aq_hw_write_reg(self, 0x00002A00U, 0x8D000000U);
 812                 }
 813         } else {
 814                 PHAL_ATLANTIC_A0->itr_rx = 0U;
 815         }
 816
 817         for (i = HW_ATL_A0_RINGS_MAX; i--;)
 818                 reg_irq_thr_set(self, PHAL_ATLANTIC_A0->itr_rx, i);
 819
 820         return aq_hw_err_from_flags(self);
 821 }
 822
 823 static int hw_atl_a0_hw_stop(struct aq_hw_s *self)
 824 {
 825         hw_atl_a0_hw_irq_disable(self, HW_ATL_A0_INT_MASK);
 826         return aq_hw_err_from_flags(self);
 827 }
 828
 829 static int hw_atl_a0_hw_ring_tx_stop(struct aq_hw_s *self,
 830                                      struct aq_ring_s *ring)
 831 {
 832         tdm_tx_desc_en_set(self, 0U, ring->idx);
 833         return aq_hw_err_from_flags(self);
 834 }
 835
 836 static int hw_atl_a0_hw_ring_rx_stop(struct aq_hw_s *self,
 837                                      struct aq_ring_s *ring)
 838 {
 839         rdm_rx_desc_en_set(self, 0U, ring->idx);
 840         return aq_hw_err_from_flags(self);
 841 }
 842
 843 static int hw_atl_a0_hw_set_speed(struct aq_hw_s *self, u32 speed)
 844 {
 845         int err = 0;
 846
 847         err = hw_atl_utils_mpi_set_speed(self, speed, MPI_INIT);
 848         if (err < 0)
 849                 goto err_exit;
 850
 851 err_exit:
 852         return err;
 853 }
 854
 855 static struct aq_hw_ops hw_atl_ops_ = {
 856         .create               = hw_atl_a0_create,
 857         .destroy              = hw_atl_a0_destroy,
 858         .get_hw_caps          = hw_atl_a0_get_hw_caps,
 859
 860         .hw_get_mac_permanent = hw_atl_utils_get_mac_permanent,
 861         .hw_set_mac_address   = hw_atl_a0_hw_mac_addr_set,
 862         .hw_get_link_status   = hw_atl_utils_mpi_get_link_status,
 863         .hw_set_link_speed    = hw_atl_a0_hw_set_speed,
 864         .hw_init              = hw_atl_a0_hw_init,
 865         .hw_deinit            = hw_atl_utils_hw_deinit,
 866         .hw_set_power         = hw_atl_utils_hw_set_power,
 867         .hw_reset             = hw_atl_a0_hw_reset,
 868         .hw_start             = hw_atl_a0_hw_start,
 869         .hw_ring_tx_start     = hw_atl_a0_hw_ring_tx_start,
 870         .hw_ring_tx_stop      = hw_atl_a0_hw_ring_tx_stop,
 871         .hw_ring_rx_start     = hw_atl_a0_hw_ring_rx_start,
 872         .hw_ring_rx_stop      = hw_atl_a0_hw_ring_rx_stop,
 873         .hw_stop              = hw_atl_a0_hw_stop,
 874
 875         .hw_ring_tx_xmit         = hw_atl_a0_hw_ring_tx_xmit,
 876         .hw_ring_tx_head_update  = hw_atl_a0_hw_ring_tx_head_update,
 877
 878         .hw_ring_rx_receive      = hw_atl_a0_hw_ring_rx_receive,
 879         .hw_ring_rx_fill         = hw_atl_a0_hw_ring_rx_fill,
 880
 881         .hw_irq_enable           = hw_atl_a0_hw_irq_enable,
 882         .hw_irq_disable          = hw_atl_a0_hw_irq_disable,
 883         .hw_irq_read             = hw_atl_a0_hw_irq_read,
 884
 885         .hw_ring_rx_init             = hw_atl_a0_hw_ring_rx_init,
 886         .hw_ring_tx_init             = hw_atl_a0_hw_ring_tx_init,
 887         .hw_packet_filter_set        = hw_atl_a0_hw_packet_filter_set,
 888         .hw_multicast_list_set       = hw_atl_a0_hw_multicast_list_set,
 889         .hw_interrupt_moderation_set = hw_atl_a0_hw_interrupt_moderation_set,
 890         .hw_rss_set                  = hw_atl_a0_hw_rss_set,
 891         .hw_rss_hash_set             = hw_atl_a0_hw_rss_hash_set,
 892         .hw_get_regs                 = hw_atl_utils_hw_get_regs,
 893         .hw_get_hw_stats             = hw_atl_utils_get_hw_stats,
 894         .hw_get_fw_version           = hw_atl_utils_get_fw_version,
 895 };
 896
 897 struct aq_hw_ops *hw_atl_a0_get_ops_by_id(struct pci_dev *pdev)
 898 {
 899         bool is_vid_ok = (pdev->vendor == PCI_VENDOR_ID_AQUANTIA);
 900         bool is_did_ok = ((pdev->device == HW_ATL_DEVICE_ID_0001) ||
 901                         (pdev->device == HW_ATL_DEVICE_ID_D100) ||
 902                         (pdev->device == HW_ATL_DEVICE_ID_D107) ||
 903                         (pdev->device == HW_ATL_DEVICE_ID_D108) ||
 904                         (pdev->device == HW_ATL_DEVICE_ID_D109));
 905
 906         bool is_rev_ok = (pdev->revision == 1U);
 907
 908         return (is_vid_ok && is_did_ok && is_rev_ok) ? &hw_atl_ops_ : NULL;
 909 }