drivers/net/wireless/ath/ath11k/hal.c

   1 // SPDX-License-Identifier: BSD-3-Clause-Clear
   2 /*
   3  * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
   4  * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
   5  */
   6 #include <linux/dma-mapping.h>
   7 #include "hal_tx.h"
   8 #include "debug.h"
   9 #include "hal_desc.h"
  10 #include "hif.h"
  11
  12 static const struct hal_srng_config hw_srng_config_template[] = {
  13         /* TODO: max_rings can populated by querying HW capabilities */
  14         { /* REO_DST */
  15                 .start_ring_id = HAL_SRNG_RING_ID_REO2SW1,
  16                 .max_rings = 4,
  17                 .entry_size = sizeof(struct hal_reo_dest_ring) >> 2,
  18                 .lmac_ring = false,
  19                 .ring_dir = HAL_SRNG_DIR_DST,
  20                 .max_size = HAL_REO_REO2SW1_RING_BASE_MSB_RING_SIZE,
  21         },
  22         { /* REO_EXCEPTION */
  23                 /* Designating REO2TCL ring as exception ring. This ring is
  24                  * similar to other REO2SW rings though it is named as REO2TCL.
  25                  * Any of theREO2SW rings can be used as exception ring.
  26                  */
  27                 .start_ring_id = HAL_SRNG_RING_ID_REO2TCL,
  28                 .max_rings = 1,
  29                 .entry_size = sizeof(struct hal_reo_dest_ring) >> 2,
  30                 .lmac_ring = false,
  31                 .ring_dir = HAL_SRNG_DIR_DST,
  32                 .max_size = HAL_REO_REO2TCL_RING_BASE_MSB_RING_SIZE,
  33         },
  34         { /* REO_REINJECT */
  35                 .start_ring_id = HAL_SRNG_RING_ID_SW2REO,
  36                 .max_rings = 1,
  37                 .entry_size = sizeof(struct hal_reo_entrance_ring) >> 2,
  38                 .lmac_ring = false,
  39                 .ring_dir = HAL_SRNG_DIR_SRC,
  40                 .max_size = HAL_REO_SW2REO_RING_BASE_MSB_RING_SIZE,
  41         },
  42         { /* REO_CMD */
  43                 .start_ring_id = HAL_SRNG_RING_ID_REO_CMD,
  44                 .max_rings = 1,
  45                 .entry_size = (sizeof(struct hal_tlv_hdr) +
  46                         sizeof(struct hal_reo_get_queue_stats)) >> 2,
  47                 .lmac_ring = false,
  48                 .ring_dir = HAL_SRNG_DIR_SRC,
  49                 .max_size = HAL_REO_CMD_RING_BASE_MSB_RING_SIZE,
  50         },
  51         { /* REO_STATUS */
  52                 .start_ring_id = HAL_SRNG_RING_ID_REO_STATUS,
  53                 .max_rings = 1,
  54                 .entry_size = (sizeof(struct hal_tlv_hdr) +
  55                         sizeof(struct hal_reo_get_queue_stats_status)) >> 2,
  56                 .lmac_ring = false,
  57                 .ring_dir = HAL_SRNG_DIR_DST,
  58                 .max_size = HAL_REO_STATUS_RING_BASE_MSB_RING_SIZE,
  59         },
  60         { /* TCL_DATA */
  61                 .start_ring_id = HAL_SRNG_RING_ID_SW2TCL1,
  62                 .max_rings = 3,
  63                 .entry_size = (sizeof(struct hal_tlv_hdr) +
  64                              sizeof(struct hal_tcl_data_cmd)) >> 2,
  65                 .lmac_ring = false,
  66                 .ring_dir = HAL_SRNG_DIR_SRC,
  67                 .max_size = HAL_SW2TCL1_RING_BASE_MSB_RING_SIZE,
  68         },
  69         { /* TCL_CMD */
  70                 .start_ring_id = HAL_SRNG_RING_ID_SW2TCL_CMD,
  71                 .max_rings = 1,
  72                 .entry_size = (sizeof(struct hal_tlv_hdr) +
  73                              sizeof(struct hal_tcl_gse_cmd)) >> 2,
  74                 .lmac_ring =  false,
  75                 .ring_dir = HAL_SRNG_DIR_SRC,
  76                 .max_size = HAL_SW2TCL1_CMD_RING_BASE_MSB_RING_SIZE,
  77         },
  78         { /* TCL_STATUS */
  79                 .start_ring_id = HAL_SRNG_RING_ID_TCL_STATUS,
  80                 .max_rings = 1,
  81                 .entry_size = (sizeof(struct hal_tlv_hdr) +
  82                              sizeof(struct hal_tcl_status_ring)) >> 2,
  83                 .lmac_ring = false,
  84                 .ring_dir = HAL_SRNG_DIR_DST,
  85                 .max_size = HAL_TCL_STATUS_RING_BASE_MSB_RING_SIZE,
  86         },
  87         { /* CE_SRC */
  88                 .start_ring_id = HAL_SRNG_RING_ID_CE0_SRC,
  89                 .max_rings = 12,
  90                 .entry_size = sizeof(struct hal_ce_srng_src_desc) >> 2,
  91                 .lmac_ring = false,
  92                 .ring_dir = HAL_SRNG_DIR_SRC,
  93                 .max_size = HAL_CE_SRC_RING_BASE_MSB_RING_SIZE,
  94         },
  95         { /* CE_DST */
  96                 .start_ring_id = HAL_SRNG_RING_ID_CE0_DST,
  97                 .max_rings = 12,
  98                 .entry_size = sizeof(struct hal_ce_srng_dest_desc) >> 2,
  99                 .lmac_ring = false,
 100                 .ring_dir = HAL_SRNG_DIR_SRC,
 101                 .max_size = HAL_CE_DST_RING_BASE_MSB_RING_SIZE,
 102         },
 103         { /* CE_DST_STATUS */
 104                 .start_ring_id = HAL_SRNG_RING_ID_CE0_DST_STATUS,
 105                 .max_rings = 12,
 106                 .entry_size = sizeof(struct hal_ce_srng_dst_status_desc) >> 2,
 107                 .lmac_ring = false,
 108                 .ring_dir = HAL_SRNG_DIR_DST,
 109                 .max_size = HAL_CE_DST_STATUS_RING_BASE_MSB_RING_SIZE,
 110         },
 111         { /* WBM_IDLE_LINK */
 112                 .start_ring_id = HAL_SRNG_RING_ID_WBM_IDLE_LINK,
 113                 .max_rings = 1,
 114                 .entry_size = sizeof(struct hal_wbm_link_desc) >> 2,
 115                 .lmac_ring = false,
 116                 .ring_dir = HAL_SRNG_DIR_SRC,
 117                 .max_size = HAL_WBM_IDLE_LINK_RING_BASE_MSB_RING_SIZE,
 118         },
 119         { /* SW2WBM_RELEASE */
 120                 .start_ring_id = HAL_SRNG_RING_ID_WBM_SW_RELEASE,
 121                 .max_rings = 1,
 122                 .entry_size = sizeof(struct hal_wbm_release_ring) >> 2,
 123                 .lmac_ring = false,
 124                 .ring_dir = HAL_SRNG_DIR_SRC,
 125                 .max_size = HAL_SW2WBM_RELEASE_RING_BASE_MSB_RING_SIZE,
 126         },
 127         { /* WBM2SW_RELEASE */
 128                 .start_ring_id = HAL_SRNG_RING_ID_WBM2SW0_RELEASE,
 129                 .max_rings = 4,
 130                 .entry_size = sizeof(struct hal_wbm_release_ring) >> 2,
 131                 .lmac_ring = false,
 132                 .ring_dir = HAL_SRNG_DIR_DST,
 133                 .max_size = HAL_WBM2SW_RELEASE_RING_BASE_MSB_RING_SIZE,
 134         },
 135         { /* RXDMA_BUF */
 136                 .start_ring_id = HAL_SRNG_RING_ID_WMAC1_SW2RXDMA0_BUF,
 137                 .max_rings = 2,
 138                 .entry_size = sizeof(struct hal_wbm_buffer_ring) >> 2,
 139                 .lmac_ring = true,
 140                 .ring_dir = HAL_SRNG_DIR_SRC,
 141                 .max_size = HAL_RXDMA_RING_MAX_SIZE,
 142         },
 143         { /* RXDMA_DST */
 144                 .start_ring_id = HAL_SRNG_RING_ID_WMAC1_RXDMA2SW0,
 145                 .max_rings = 1,
 146                 .entry_size = sizeof(struct hal_reo_entrance_ring) >> 2,
 147                 .lmac_ring = true,
 148                 .ring_dir = HAL_SRNG_DIR_DST,
 149                 .max_size = HAL_RXDMA_RING_MAX_SIZE,
 150         },
 151         { /* RXDMA_MONITOR_BUF */
 152                 .start_ring_id = HAL_SRNG_RING_ID_WMAC1_SW2RXDMA2_BUF,
 153                 .max_rings = 1,
 154                 .entry_size = sizeof(struct hal_wbm_buffer_ring) >> 2,
 155                 .lmac_ring = true,
 156                 .ring_dir = HAL_SRNG_DIR_SRC,
 157                 .max_size = HAL_RXDMA_RING_MAX_SIZE,
 158         },
 159         { /* RXDMA_MONITOR_STATUS */
 160                 .start_ring_id = HAL_SRNG_RING_ID_WMAC1_SW2RXDMA1_STATBUF,
 161                 .max_rings = 1,
 162                 .entry_size = sizeof(struct hal_wbm_buffer_ring) >> 2,
 163                 .lmac_ring = true,
 164                 .ring_dir = HAL_SRNG_DIR_SRC,
 165                 .max_size = HAL_RXDMA_RING_MAX_SIZE,
 166         },
 167         { /* RXDMA_MONITOR_DST */
 168                 .start_ring_id = HAL_SRNG_RING_ID_WMAC1_RXDMA2SW1,
 169                 .max_rings = 1,
 170                 .entry_size = sizeof(struct hal_reo_entrance_ring) >> 2,
 171                 .lmac_ring = true,
 172                 .ring_dir = HAL_SRNG_DIR_DST,
 173                 .max_size = HAL_RXDMA_RING_MAX_SIZE,
 174         },
 175         { /* RXDMA_MONITOR_DESC */
 176                 .start_ring_id = HAL_SRNG_RING_ID_WMAC1_SW2RXDMA1_DESC,
 177                 .max_rings = 1,
 178                 .entry_size = sizeof(struct hal_wbm_buffer_ring) >> 2,
 179                 .lmac_ring = true,
 180                 .ring_dir = HAL_SRNG_DIR_SRC,
 181                 .max_size = HAL_RXDMA_RING_MAX_SIZE,
 182         },
 183         { /* RXDMA DIR BUF */
 184                 .start_ring_id = HAL_SRNG_RING_ID_RXDMA_DIR_BUF,
 185                 .max_rings = 1,
 186                 .entry_size = 8 >> 2, /* TODO: Define the struct */
 187                 .lmac_ring = true,
 188                 .ring_dir = HAL_SRNG_DIR_SRC,
 189                 .max_size = HAL_RXDMA_RING_MAX_SIZE,
 190         },
 191 };
 192
 193 static int ath11k_hal_alloc_cont_rdp(struct ath11k_base *ab)
 194 {
 195         struct ath11k_hal *hal = &ab->hal;
 196         size_t size;
 197
 198         size = sizeof(u32) * HAL_SRNG_RING_ID_MAX;
 199         hal->rdp.vaddr = dma_alloc_coherent(ab->dev, size, &hal->rdp.paddr,
 200                                             GFP_KERNEL);
 201         if (!hal->rdp.vaddr)
 202                 return -ENOMEM;
 203
 204         return 0;
 205 }
 206
 207 static void ath11k_hal_free_cont_rdp(struct ath11k_base *ab)
 208 {
 209         struct ath11k_hal *hal = &ab->hal;
 210         size_t size;
 211
 212         if (!hal->rdp.vaddr)
 213                 return;
 214
 215         size = sizeof(u32) * HAL_SRNG_RING_ID_MAX;
 216         dma_free_coherent(ab->dev, size,
 217                           hal->rdp.vaddr, hal->rdp.paddr);
 218         hal->rdp.vaddr = NULL;
 219 }
 220
 221 static int ath11k_hal_alloc_cont_wrp(struct ath11k_base *ab)
 222 {
 223         struct ath11k_hal *hal = &ab->hal;
 224         size_t size;
 225
 226         size = sizeof(u32) * HAL_SRNG_NUM_LMAC_RINGS;
 227         hal->wrp.vaddr = dma_alloc_coherent(ab->dev, size, &hal->wrp.paddr,
 228                                             GFP_KERNEL);
 229         if (!hal->wrp.vaddr)
 230                 return -ENOMEM;
 231
 232         return 0;
 233 }
 234
 235 static void ath11k_hal_free_cont_wrp(struct ath11k_base *ab)
 236 {
 237         struct ath11k_hal *hal = &ab->hal;
 238         size_t size;
 239
 240         if (!hal->wrp.vaddr)
 241                 return;
 242
 243         size = sizeof(u32) * HAL_SRNG_NUM_LMAC_RINGS;
 244         dma_free_coherent(ab->dev, size,
 245                           hal->wrp.vaddr, hal->wrp.paddr);
 246         hal->wrp.vaddr = NULL;
 247 }
 248
 249 static void ath11k_hal_ce_dst_setup(struct ath11k_base *ab,
 250                                     struct hal_srng *srng, int ring_num)
 251 {
 252         struct hal_srng_config *srng_config = &ab->hal.srng_config[HAL_CE_DST];
 253         u32 addr;
 254         u32 val;
 255
 256         addr = HAL_CE_DST_RING_CTRL +
 257                srng_config->reg_start[HAL_SRNG_REG_GRP_R0] +
 258                ring_num * srng_config->reg_size[HAL_SRNG_REG_GRP_R0];
 259
 260         val = ath11k_hif_read32(ab, addr);
 261         val &= ~HAL_CE_DST_R0_DEST_CTRL_MAX_LEN;
 262         val |= FIELD_PREP(HAL_CE_DST_R0_DEST_CTRL_MAX_LEN,
 263                           srng->u.dst_ring.max_buffer_length);
 264         ath11k_hif_write32(ab, addr, val);
 265 }
 266
 267 static void ath11k_hal_srng_dst_hw_init(struct ath11k_base *ab,
 268                                         struct hal_srng *srng)
 269 {
 270         struct ath11k_hal *hal = &ab->hal;
 271         u32 val;
 272         u64 hp_addr;
 273         u32 reg_base;
 274
 275         reg_base = srng->hwreg_base[HAL_SRNG_REG_GRP_R0];
 276
 277         if (srng->flags & HAL_SRNG_FLAGS_MSI_INTR) {
 278                 ath11k_hif_write32(ab, reg_base +
 279                                    HAL_REO1_RING_MSI1_BASE_LSB_OFFSET(ab),
 280                                    srng->msi_addr);
 281
 282                 val = FIELD_PREP(HAL_REO1_RING_MSI1_BASE_MSB_ADDR,
 283                                  ((u64)srng->msi_addr >>
 284                                   HAL_ADDR_MSB_REG_SHIFT)) |
 285                       HAL_REO1_RING_MSI1_BASE_MSB_MSI1_ENABLE;
 286                 ath11k_hif_write32(ab, reg_base +
 287                                        HAL_REO1_RING_MSI1_BASE_MSB_OFFSET(ab), val);
 288
 289                 ath11k_hif_write32(ab,
 290                                    reg_base + HAL_REO1_RING_MSI1_DATA_OFFSET(ab),
 291                                    srng->msi_data);
 292         }
 293
 294         ath11k_hif_write32(ab, reg_base, srng->ring_base_paddr);
 295
 296         val = FIELD_PREP(HAL_REO1_RING_BASE_MSB_RING_BASE_ADDR_MSB,
 297                          ((u64)srng->ring_base_paddr >>
 298                           HAL_ADDR_MSB_REG_SHIFT)) |
 299               FIELD_PREP(HAL_REO1_RING_BASE_MSB_RING_SIZE,
 300                          (srng->entry_size * srng->num_entries));
 301         ath11k_hif_write32(ab, reg_base + HAL_REO1_RING_BASE_MSB_OFFSET(ab), val);
 302
 303         val = FIELD_PREP(HAL_REO1_RING_ID_RING_ID, srng->ring_id) |
 304               FIELD_PREP(HAL_REO1_RING_ID_ENTRY_SIZE, srng->entry_size);
 305         ath11k_hif_write32(ab, reg_base + HAL_REO1_RING_ID_OFFSET(ab), val);
 306
 307         /* interrupt setup */
 308         val = FIELD_PREP(HAL_REO1_RING_PRDR_INT_SETUP_INTR_TMR_THOLD,
 309                          (srng->intr_timer_thres_us >> 3));
 310
 311         val |= FIELD_PREP(HAL_REO1_RING_PRDR_INT_SETUP_BATCH_COUNTER_THOLD,
 312                           (srng->intr_batch_cntr_thres_entries *
 313                            srng->entry_size));
 314
 315         ath11k_hif_write32(ab,
 316                            reg_base + HAL_REO1_RING_PRODUCER_INT_SETUP_OFFSET(ab),
 317                            val);
 318
 319         hp_addr = hal->rdp.paddr +
 320                   ((unsigned long)srng->u.dst_ring.hp_addr -
 321                    (unsigned long)hal->rdp.vaddr);
 322         ath11k_hif_write32(ab, reg_base + HAL_REO1_RING_HP_ADDR_LSB_OFFSET(ab),
 323                            hp_addr & HAL_ADDR_LSB_REG_MASK);
 324         ath11k_hif_write32(ab, reg_base + HAL_REO1_RING_HP_ADDR_MSB_OFFSET(ab),
 325                            hp_addr >> HAL_ADDR_MSB_REG_SHIFT);
 326
 327         /* Initialize head and tail pointers to indicate ring is empty */
 328         reg_base = srng->hwreg_base[HAL_SRNG_REG_GRP_R2];
 329         ath11k_hif_write32(ab, reg_base, 0);
 330         ath11k_hif_write32(ab, reg_base + HAL_REO1_RING_TP_OFFSET(ab), 0);
 331         *srng->u.dst_ring.hp_addr = 0;
 332
 333         reg_base = srng->hwreg_base[HAL_SRNG_REG_GRP_R0];
 334         val = 0;
 335         if (srng->flags & HAL_SRNG_FLAGS_DATA_TLV_SWAP)
 336                 val |= HAL_REO1_RING_MISC_DATA_TLV_SWAP;
 337         if (srng->flags & HAL_SRNG_FLAGS_RING_PTR_SWAP)
 338                 val |= HAL_REO1_RING_MISC_HOST_FW_SWAP;
 339         if (srng->flags & HAL_SRNG_FLAGS_MSI_SWAP)
 340                 val |= HAL_REO1_RING_MISC_MSI_SWAP;
 341         val |= HAL_REO1_RING_MISC_SRNG_ENABLE;
 342
 343         ath11k_hif_write32(ab, reg_base + HAL_REO1_RING_MISC_OFFSET(ab), val);
 344 }
 345
 346 static void ath11k_hal_srng_src_hw_init(struct ath11k_base *ab,
 347                                         struct hal_srng *srng)
 348 {
 349         struct ath11k_hal *hal = &ab->hal;
 350         u32 val;
 351         u64 tp_addr;
 352         u32 reg_base;
 353
 354         reg_base = srng->hwreg_base[HAL_SRNG_REG_GRP_R0];
 355
 356         if (srng->flags & HAL_SRNG_FLAGS_MSI_INTR) {
 357                 ath11k_hif_write32(ab, reg_base +
 358                                    HAL_TCL1_RING_MSI1_BASE_LSB_OFFSET(ab),
 359                                    srng->msi_addr);
 360
 361                 val = FIELD_PREP(HAL_TCL1_RING_MSI1_BASE_MSB_ADDR,
 362                                  ((u64)srng->msi_addr >>
 363                                   HAL_ADDR_MSB_REG_SHIFT)) |
 364                       HAL_TCL1_RING_MSI1_BASE_MSB_MSI1_ENABLE;
 365                 ath11k_hif_write32(ab, reg_base +
 366                                        HAL_TCL1_RING_MSI1_BASE_MSB_OFFSET(ab),
 367                                    val);
 368
 369                 ath11k_hif_write32(ab, reg_base +
 370                                        HAL_TCL1_RING_MSI1_DATA_OFFSET(ab),
 371                                    srng->msi_data);
 372         }
 373
 374         ath11k_hif_write32(ab, reg_base, srng->ring_base_paddr);
 375
 376         val = FIELD_PREP(HAL_TCL1_RING_BASE_MSB_RING_BASE_ADDR_MSB,
 377                          ((u64)srng->ring_base_paddr >>
 378                           HAL_ADDR_MSB_REG_SHIFT)) |
 379               FIELD_PREP(HAL_TCL1_RING_BASE_MSB_RING_SIZE,
 380                          (srng->entry_size * srng->num_entries));
 381         ath11k_hif_write32(ab, reg_base + HAL_TCL1_RING_BASE_MSB_OFFSET(ab), val);
 382
 383         val = FIELD_PREP(HAL_REO1_RING_ID_ENTRY_SIZE, srng->entry_size);
 384         ath11k_hif_write32(ab, reg_base + HAL_TCL1_RING_ID_OFFSET(ab), val);
 385
 386         if (srng->ring_id == HAL_SRNG_RING_ID_WBM_IDLE_LINK) {
 387                 ath11k_hif_write32(ab, reg_base, (u32)srng->ring_base_paddr);
 388                 val = FIELD_PREP(HAL_TCL1_RING_BASE_MSB_RING_BASE_ADDR_MSB,
 389                                  ((u64)srng->ring_base_paddr >>
 390                                  HAL_ADDR_MSB_REG_SHIFT)) |
 391                         FIELD_PREP(HAL_TCL1_RING_BASE_MSB_RING_SIZE,
 392                                    (srng->entry_size * srng->num_entries));
 393                 ath11k_hif_write32(ab, reg_base + HAL_TCL1_RING_BASE_MSB_OFFSET(ab), val);
 394         }
 395
 396         /* interrupt setup */
 397         /* NOTE: IPQ8074 v2 requires the interrupt timer threshold in the
 398          * unit of 8 usecs instead of 1 usec (as required by v1).
 399          */
 400         val = FIELD_PREP(HAL_TCL1_RING_CONSR_INT_SETUP_IX0_INTR_TMR_THOLD,
 401                          srng->intr_timer_thres_us);
 402
 403         val |= FIELD_PREP(HAL_TCL1_RING_CONSR_INT_SETUP_IX0_BATCH_COUNTER_THOLD,
 404                           (srng->intr_batch_cntr_thres_entries *
 405                            srng->entry_size));
 406
 407         ath11k_hif_write32(ab,
 408                            reg_base + HAL_TCL1_RING_CONSR_INT_SETUP_IX0_OFFSET(ab),
 409                            val);
 410
 411         val = 0;
 412         if (srng->flags & HAL_SRNG_FLAGS_LOW_THRESH_INTR_EN) {
 413                 val |= FIELD_PREP(HAL_TCL1_RING_CONSR_INT_SETUP_IX1_LOW_THOLD,
 414                                   srng->u.src_ring.low_threshold);
 415         }
 416         ath11k_hif_write32(ab,
 417                            reg_base + HAL_TCL1_RING_CONSR_INT_SETUP_IX1_OFFSET(ab),
 418                            val);
 419
 420         if (srng->ring_id != HAL_SRNG_RING_ID_WBM_IDLE_LINK) {
 421                 tp_addr = hal->rdp.paddr +
 422                           ((unsigned long)srng->u.src_ring.tp_addr -
 423                            (unsigned long)hal->rdp.vaddr);
 424                 ath11k_hif_write32(ab,
 425                                    reg_base + HAL_TCL1_RING_TP_ADDR_LSB_OFFSET(ab),
 426                                    tp_addr & HAL_ADDR_LSB_REG_MASK);
 427                 ath11k_hif_write32(ab,
 428                                    reg_base + HAL_TCL1_RING_TP_ADDR_MSB_OFFSET(ab),
 429                                    tp_addr >> HAL_ADDR_MSB_REG_SHIFT);
 430         }
 431
 432         /* Initialize head and tail pointers to indicate ring is empty */
 433         reg_base = srng->hwreg_base[HAL_SRNG_REG_GRP_R2];
 434         ath11k_hif_write32(ab, reg_base, 0);
 435         ath11k_hif_write32(ab, reg_base + HAL_TCL1_RING_TP_OFFSET, 0);
 436         *srng->u.src_ring.tp_addr = 0;
 437
 438         reg_base = srng->hwreg_base[HAL_SRNG_REG_GRP_R0];
 439         val = 0;
 440         if (srng->flags & HAL_SRNG_FLAGS_DATA_TLV_SWAP)
 441                 val |= HAL_TCL1_RING_MISC_DATA_TLV_SWAP;
 442         if (srng->flags & HAL_SRNG_FLAGS_RING_PTR_SWAP)
 443                 val |= HAL_TCL1_RING_MISC_HOST_FW_SWAP;
 444         if (srng->flags & HAL_SRNG_FLAGS_MSI_SWAP)
 445                 val |= HAL_TCL1_RING_MISC_MSI_SWAP;
 446
 447         /* Loop count is not used for SRC rings */
 448         val |= HAL_TCL1_RING_MISC_MSI_LOOPCNT_DISABLE;
 449
 450         val |= HAL_TCL1_RING_MISC_SRNG_ENABLE;
 451
 452         ath11k_hif_write32(ab, reg_base + HAL_TCL1_RING_MISC_OFFSET(ab), val);
 453 }
 454
 455 static void ath11k_hal_srng_hw_init(struct ath11k_base *ab,
 456                                     struct hal_srng *srng)
 457 {
 458         if (srng->ring_dir == HAL_SRNG_DIR_SRC)
 459                 ath11k_hal_srng_src_hw_init(ab, srng);
 460         else
 461                 ath11k_hal_srng_dst_hw_init(ab, srng);
 462 }
 463
 464 static int ath11k_hal_srng_get_ring_id(struct ath11k_base *ab,
 465                                        enum hal_ring_type type,
 466                                        int ring_num, int mac_id)
 467 {
 468         struct hal_srng_config *srng_config = &ab->hal.srng_config[type];
 469         int ring_id;
 470
 471         if (ring_num >= srng_config->max_rings) {
 472                 ath11k_warn(ab, "invalid ring number :%d\n", ring_num);
 473                 return -EINVAL;
 474         }
 475
 476         ring_id = srng_config->start_ring_id + ring_num;
 477         if (srng_config->lmac_ring)
 478                 ring_id += mac_id * HAL_SRNG_RINGS_PER_LMAC;
 479
 480         if (WARN_ON(ring_id >= HAL_SRNG_RING_ID_MAX))
 481                 return -EINVAL;
 482
 483         return ring_id;
 484 }
 485
 486 int ath11k_hal_srng_get_entrysize(struct ath11k_base *ab, u32 ring_type)
 487 {
 488         struct hal_srng_config *srng_config;
 489
 490         if (WARN_ON(ring_type >= HAL_MAX_RING_TYPES))
 491                 return -EINVAL;
 492
 493         srng_config = &ab->hal.srng_config[ring_type];
 494
 495         return (srng_config->entry_size << 2);
 496 }
 497
 498 int ath11k_hal_srng_get_max_entries(struct ath11k_base *ab, u32 ring_type)
 499 {
 500         struct hal_srng_config *srng_config;
 501
 502         if (WARN_ON(ring_type >= HAL_MAX_RING_TYPES))
 503                 return -EINVAL;
 504
 505         srng_config = &ab->hal.srng_config[ring_type];
 506
 507         return (srng_config->max_size / srng_config->entry_size);
 508 }
 509
 510 void ath11k_hal_srng_get_params(struct ath11k_base *ab, struct hal_srng *srng,
 511                                 struct hal_srng_params *params)
 512 {
 513         params->ring_base_paddr = srng->ring_base_paddr;
 514         params->ring_base_vaddr = srng->ring_base_vaddr;
 515         params->num_entries = srng->num_entries;
 516         params->intr_timer_thres_us = srng->intr_timer_thres_us;
 517         params->intr_batch_cntr_thres_entries =
 518                 srng->intr_batch_cntr_thres_entries;
 519         params->low_threshold = srng->u.src_ring.low_threshold;
 520         params->msi_addr = srng->msi_addr;
 521         params->msi_data = srng->msi_data;
 522         params->flags = srng->flags;
 523 }
 524
 525 dma_addr_t ath11k_hal_srng_get_hp_addr(struct ath11k_base *ab,
 526                                        struct hal_srng *srng)
 527 {
 528         if (!(srng->flags & HAL_SRNG_FLAGS_LMAC_RING))
 529                 return 0;
 530
 531         if (srng->ring_dir == HAL_SRNG_DIR_SRC)
 532                 return ab->hal.wrp.paddr +
 533                        ((unsigned long)srng->u.src_ring.hp_addr -
 534                         (unsigned long)ab->hal.wrp.vaddr);
 535         else
 536                 return ab->hal.rdp.paddr +
 537                        ((unsigned long)srng->u.dst_ring.hp_addr -
 538                          (unsigned long)ab->hal.rdp.vaddr);
 539 }
 540
 541 dma_addr_t ath11k_hal_srng_get_tp_addr(struct ath11k_base *ab,
 542                                        struct hal_srng *srng)
 543 {
 544         if (!(srng->flags & HAL_SRNG_FLAGS_LMAC_RING))
 545                 return 0;
 546
 547         if (srng->ring_dir == HAL_SRNG_DIR_SRC)
 548                 return ab->hal.rdp.paddr +
 549                        ((unsigned long)srng->u.src_ring.tp_addr -
 550                         (unsigned long)ab->hal.rdp.vaddr);
 551         else
 552                 return ab->hal.wrp.paddr +
 553                        ((unsigned long)srng->u.dst_ring.tp_addr -
 554                         (unsigned long)ab->hal.wrp.vaddr);
 555 }
 556
 557 u32 ath11k_hal_ce_get_desc_size(enum hal_ce_desc type)
 558 {
 559         switch (type) {
 560         case HAL_CE_DESC_SRC:
 561                 return sizeof(struct hal_ce_srng_src_desc);
 562         case HAL_CE_DESC_DST:
 563                 return sizeof(struct hal_ce_srng_dest_desc);
 564         case HAL_CE_DESC_DST_STATUS:
 565                 return sizeof(struct hal_ce_srng_dst_status_desc);
 566         }
 567
 568         return 0;
 569 }
 570
 571 void ath11k_hal_ce_src_set_desc(void *buf, dma_addr_t paddr, u32 len, u32 id,
 572                                 u8 byte_swap_data)
 573 {
 574         struct hal_ce_srng_src_desc *desc = (struct hal_ce_srng_src_desc *)buf;
 575
 576         desc->buffer_addr_low = paddr & HAL_ADDR_LSB_REG_MASK;
 577         desc->buffer_addr_info =
 578                 FIELD_PREP(HAL_CE_SRC_DESC_ADDR_INFO_ADDR_HI,
 579                            ((u64)paddr >> HAL_ADDR_MSB_REG_SHIFT)) |
 580                 FIELD_PREP(HAL_CE_SRC_DESC_ADDR_INFO_BYTE_SWAP,
 581                            byte_swap_data) |
 582                 FIELD_PREP(HAL_CE_SRC_DESC_ADDR_INFO_GATHER, 0) |
 583                 FIELD_PREP(HAL_CE_SRC_DESC_ADDR_INFO_LEN, len);
 584         desc->meta_info = FIELD_PREP(HAL_CE_SRC_DESC_META_INFO_DATA, id);
 585 }
 586
 587 void ath11k_hal_ce_dst_set_desc(void *buf, dma_addr_t paddr)
 588 {
 589         struct hal_ce_srng_dest_desc *desc =
 590                 (struct hal_ce_srng_dest_desc *)buf;
 591
 592         desc->buffer_addr_low = paddr & HAL_ADDR_LSB_REG_MASK;
 593         desc->buffer_addr_info =
 594                 FIELD_PREP(HAL_CE_DEST_DESC_ADDR_INFO_ADDR_HI,
 595                            ((u64)paddr >> HAL_ADDR_MSB_REG_SHIFT));
 596 }
 597
 598 u32 ath11k_hal_ce_dst_status_get_length(void *buf)
 599 {
 600         struct hal_ce_srng_dst_status_desc *desc =
 601                 (struct hal_ce_srng_dst_status_desc *)buf;
 602         u32 len;
 603
 604         len = FIELD_GET(HAL_CE_DST_STATUS_DESC_FLAGS_LEN, desc->flags);
 605         desc->flags &= ~HAL_CE_DST_STATUS_DESC_FLAGS_LEN;
 606
 607         return len;
 608 }
 609
 610 void ath11k_hal_set_link_desc_addr(struct hal_wbm_link_desc *desc, u32 cookie,
 611                                    dma_addr_t paddr)
 612 {
 613         desc->buf_addr_info.info0 = FIELD_PREP(BUFFER_ADDR_INFO0_ADDR,
 614                                                (paddr & HAL_ADDR_LSB_REG_MASK));
 615         desc->buf_addr_info.info1 = FIELD_PREP(BUFFER_ADDR_INFO1_ADDR,
 616                                                ((u64)paddr >> HAL_ADDR_MSB_REG_SHIFT)) |
 617                                     FIELD_PREP(BUFFER_ADDR_INFO1_RET_BUF_MGR, 1) |
 618                                     FIELD_PREP(BUFFER_ADDR_INFO1_SW_COOKIE, cookie);
 619 }
 620
 621 u32 *ath11k_hal_srng_dst_peek(struct ath11k_base *ab, struct hal_srng *srng)
 622 {
 623         lockdep_assert_held(&srng->lock);
 624
 625         if (srng->u.dst_ring.tp != srng->u.dst_ring.cached_hp)
 626                 return (srng->ring_base_vaddr + srng->u.dst_ring.tp);
 627
 628         return NULL;
 629 }
 630
 631 static void ath11k_hal_srng_prefetch_desc(struct ath11k_base *ab,
 632                                           struct hal_srng *srng)
 633 {
 634         u32 *desc;
 635
 636         /* prefetch only if desc is available */
 637         desc = ath11k_hal_srng_dst_peek(ab, srng);
 638         if (likely(desc)) {
 639                 dma_sync_single_for_cpu(ab->dev, virt_to_phys(desc),
 640                                         (srng->entry_size * sizeof(u32)),
 641                                         DMA_FROM_DEVICE);
 642                 prefetch(desc);
 643         }
 644 }
 645
 646 u32 *ath11k_hal_srng_dst_get_next_entry(struct ath11k_base *ab,
 647                                         struct hal_srng *srng)
 648 {
 649         u32 *desc;
 650
 651         lockdep_assert_held(&srng->lock);
 652
 653         if (srng->u.dst_ring.tp == srng->u.dst_ring.cached_hp)
 654                 return NULL;
 655
 656         desc = srng->ring_base_vaddr + srng->u.dst_ring.tp;
 657
 658         srng->u.dst_ring.tp += srng->entry_size;
 659
 660         /* wrap around to start of ring*/
 661         if (srng->u.dst_ring.tp == srng->ring_size)
 662                 srng->u.dst_ring.tp = 0;
 663
 664         /* Try to prefetch the next descriptor in the ring */
 665         if (srng->flags & HAL_SRNG_FLAGS_CACHED)
 666                 ath11k_hal_srng_prefetch_desc(ab, srng);
 667
 668         return desc;
 669 }
 670
 671 int ath11k_hal_srng_dst_num_free(struct ath11k_base *ab, struct hal_srng *srng,
 672                                  bool sync_hw_ptr)
 673 {
 674         u32 tp, hp;
 675
 676         lockdep_assert_held(&srng->lock);
 677
 678         tp = srng->u.dst_ring.tp;
 679
 680         if (sync_hw_ptr) {
 681                 hp = *srng->u.dst_ring.hp_addr;
 682                 srng->u.dst_ring.cached_hp = hp;
 683         } else {
 684                 hp = srng->u.dst_ring.cached_hp;
 685         }
 686
 687         if (hp >= tp)
 688                 return (hp - tp) / srng->entry_size;
 689         else
 690                 return (srng->ring_size - tp + hp) / srng->entry_size;
 691 }
 692
 693 /* Returns number of available entries in src ring */
 694 int ath11k_hal_srng_src_num_free(struct ath11k_base *ab, struct hal_srng *srng,
 695                                  bool sync_hw_ptr)
 696 {
 697         u32 tp, hp;
 698
 699         lockdep_assert_held(&srng->lock);
 700
 701         hp = srng->u.src_ring.hp;
 702
 703         if (sync_hw_ptr) {
 704                 tp = *srng->u.src_ring.tp_addr;
 705                 srng->u.src_ring.cached_tp = tp;
 706         } else {
 707                 tp = srng->u.src_ring.cached_tp;
 708         }
 709
 710         if (tp > hp)
 711                 return ((tp - hp) / srng->entry_size) - 1;
 712         else
 713                 return ((srng->ring_size - hp + tp) / srng->entry_size) - 1;
 714 }
 715
 716 u32 *ath11k_hal_srng_src_get_next_entry(struct ath11k_base *ab,
 717                                         struct hal_srng *srng)
 718 {
 719         u32 *desc;
 720         u32 next_hp;
 721
 722         lockdep_assert_held(&srng->lock);
 723
 724         /* TODO: Using % is expensive, but we have to do this since size of some
 725          * SRNG rings is not power of 2 (due to descriptor sizes). Need to see
 726          * if separate function is defined for rings having power of 2 ring size
 727          * (TCL2SW, REO2SW, SW2RXDMA and CE rings) so that we can avoid the
 728          * overhead of % by using mask (with &).
 729          */
 730         next_hp = (srng->u.src_ring.hp + srng->entry_size) % srng->ring_size;
 731
 732         if (next_hp == srng->u.src_ring.cached_tp)
 733                 return NULL;
 734
 735         desc = srng->ring_base_vaddr + srng->u.src_ring.hp;
 736         srng->u.src_ring.hp = next_hp;
 737
 738         /* TODO: Reap functionality is not used by all rings. If particular
 739          * ring does not use reap functionality, we need not update reap_hp
 740          * with next_hp pointer. Need to make sure a separate function is used
 741          * before doing any optimization by removing below code updating
 742          * reap_hp.
 743          */
 744         srng->u.src_ring.reap_hp = next_hp;
 745
 746         return desc;
 747 }
 748
 749 u32 *ath11k_hal_srng_src_reap_next(struct ath11k_base *ab,
 750                                    struct hal_srng *srng)
 751 {
 752         u32 *desc;
 753         u32 next_reap_hp;
 754
 755         lockdep_assert_held(&srng->lock);
 756
 757         next_reap_hp = (srng->u.src_ring.reap_hp + srng->entry_size) %
 758                        srng->ring_size;
 759
 760         if (next_reap_hp == srng->u.src_ring.cached_tp)
 761                 return NULL;
 762
 763         desc = srng->ring_base_vaddr + next_reap_hp;
 764         srng->u.src_ring.reap_hp = next_reap_hp;
 765
 766         return desc;
 767 }
 768
 769 u32 *ath11k_hal_srng_src_get_next_reaped(struct ath11k_base *ab,
 770                                          struct hal_srng *srng)
 771 {
 772         u32 *desc;
 773
 774         lockdep_assert_held(&srng->lock);
 775
 776         if (srng->u.src_ring.hp == srng->u.src_ring.reap_hp)
 777                 return NULL;
 778
 779         desc = srng->ring_base_vaddr + srng->u.src_ring.hp;
 780         srng->u.src_ring.hp = (srng->u.src_ring.hp + srng->entry_size) %
 781                               srng->ring_size;
 782
 783         return desc;
 784 }
 785
 786 u32 *ath11k_hal_srng_src_peek(struct ath11k_base *ab, struct hal_srng *srng)
 787 {
 788         lockdep_assert_held(&srng->lock);
 789
 790         if (((srng->u.src_ring.hp + srng->entry_size) % srng->ring_size) ==
 791             srng->u.src_ring.cached_tp)
 792                 return NULL;
 793
 794         return srng->ring_base_vaddr + srng->u.src_ring.hp;
 795 }
 796
 797 void ath11k_hal_srng_access_begin(struct ath11k_base *ab, struct hal_srng *srng)
 798 {
 799         lockdep_assert_held(&srng->lock);
 800
 801         if (srng->ring_dir == HAL_SRNG_DIR_SRC) {
 802                 srng->u.src_ring.cached_tp =
 803                         *(volatile u32 *)srng->u.src_ring.tp_addr;
 804         } else {
 805                 srng->u.dst_ring.cached_hp = *srng->u.dst_ring.hp_addr;
 806
 807                 /* Try to prefetch the next descriptor in the ring */
 808                 if (srng->flags & HAL_SRNG_FLAGS_CACHED)
 809                         ath11k_hal_srng_prefetch_desc(ab, srng);
 810         }
 811 }
 812
 813 /* Update cached ring head/tail pointers to HW. ath11k_hal_srng_access_begin()
 814  * should have been called before this.
 815  */
 816 void ath11k_hal_srng_access_end(struct ath11k_base *ab, struct hal_srng *srng)
 817 {
 818         lockdep_assert_held(&srng->lock);
 819
 820         /* TODO: See if we need a write memory barrier here */
 821         if (srng->flags & HAL_SRNG_FLAGS_LMAC_RING) {
 822                 /* For LMAC rings, ring pointer updates are done through FW and
 823                  * hence written to a shared memory location that is read by FW
 824                  */
 825                 if (srng->ring_dir == HAL_SRNG_DIR_SRC) {
 826                         srng->u.src_ring.last_tp =
 827                                 *(volatile u32 *)srng->u.src_ring.tp_addr;
 828                         *srng->u.src_ring.hp_addr = srng->u.src_ring.hp;
 829                 } else {
 830                         srng->u.dst_ring.last_hp = *srng->u.dst_ring.hp_addr;
 831                         *srng->u.dst_ring.tp_addr = srng->u.dst_ring.tp;
 832                 }
 833         } else {
 834                 if (srng->ring_dir == HAL_SRNG_DIR_SRC) {
 835                         srng->u.src_ring.last_tp =
 836                                 *(volatile u32 *)srng->u.src_ring.tp_addr;
 837                         ath11k_hif_write32(ab,
 838                                            (unsigned long)srng->u.src_ring.hp_addr -
 839                                            (unsigned long)ab->mem,
 840                                            srng->u.src_ring.hp);
 841                 } else {
 842                         srng->u.dst_ring.last_hp = *srng->u.dst_ring.hp_addr;
 843                         ath11k_hif_write32(ab,
 844                                            (unsigned long)srng->u.dst_ring.tp_addr -
 845                                            (unsigned long)ab->mem,
 846                                            srng->u.dst_ring.tp);
 847                 }
 848         }
 849
 850         srng->timestamp = jiffies;
 851 }
 852
 853 void ath11k_hal_setup_link_idle_list(struct ath11k_base *ab,
 854                                      struct hal_wbm_idle_scatter_list *sbuf,
 855                                      u32 nsbufs, u32 tot_link_desc,
 856                                      u32 end_offset)
 857 {
 858         struct ath11k_buffer_addr *link_addr;
 859         int i;
 860         u32 reg_scatter_buf_sz = HAL_WBM_IDLE_SCATTER_BUF_SIZE / 64;
 861
 862         link_addr = (void *)sbuf[0].vaddr + HAL_WBM_IDLE_SCATTER_BUF_SIZE;
 863
 864         for (i = 1; i < nsbufs; i++) {
 865                 link_addr->info0 = sbuf[i].paddr & HAL_ADDR_LSB_REG_MASK;
 866                 link_addr->info1 = FIELD_PREP(
 867                                 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_39_32,
 868                                 (u64)sbuf[i].paddr >> HAL_ADDR_MSB_REG_SHIFT) |
 869                                 FIELD_PREP(
 870                                 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_MATCH_TAG,
 871                                 BASE_ADDR_MATCH_TAG_VAL);
 872
 873                 link_addr = (void *)sbuf[i].vaddr +
 874                              HAL_WBM_IDLE_SCATTER_BUF_SIZE;
 875         }
 876
 877         ath11k_hif_write32(ab,
 878                            HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_R0_IDLE_LIST_CONTROL_ADDR,
 879                            FIELD_PREP(HAL_WBM_SCATTER_BUFFER_SIZE, reg_scatter_buf_sz) |
 880                            FIELD_PREP(HAL_WBM_LINK_DESC_IDLE_LIST_MODE, 0x1));
 881         ath11k_hif_write32(ab,
 882                            HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_R0_IDLE_LIST_SIZE_ADDR,
 883                            FIELD_PREP(HAL_WBM_SCATTER_RING_SIZE_OF_IDLE_LINK_DESC_LIST,
 884                                       reg_scatter_buf_sz * nsbufs));
 885         ath11k_hif_write32(ab,
 886                            HAL_SEQ_WCSS_UMAC_WBM_REG +
 887                            HAL_WBM_SCATTERED_RING_BASE_LSB,
 888                            FIELD_PREP(BUFFER_ADDR_INFO0_ADDR,
 889                                       sbuf[0].paddr & HAL_ADDR_LSB_REG_MASK));
 890         ath11k_hif_write32(ab,
 891                            HAL_SEQ_WCSS_UMAC_WBM_REG +
 892                            HAL_WBM_SCATTERED_RING_BASE_MSB,
 893                            FIELD_PREP(
 894                                 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_39_32,
 895                                 (u64)sbuf[0].paddr >> HAL_ADDR_MSB_REG_SHIFT) |
 896                                 FIELD_PREP(
 897                                 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_MATCH_TAG,
 898                                 BASE_ADDR_MATCH_TAG_VAL));
 899
 900         /* Setup head and tail pointers for the idle list */
 901         ath11k_hif_write32(ab,
 902                            HAL_SEQ_WCSS_UMAC_WBM_REG +
 903                            HAL_WBM_SCATTERED_DESC_PTR_HEAD_INFO_IX0,
 904                            FIELD_PREP(BUFFER_ADDR_INFO0_ADDR,
 905                                       sbuf[nsbufs - 1].paddr));
 906         ath11k_hif_write32(ab,
 907                            HAL_SEQ_WCSS_UMAC_WBM_REG +
 908                            HAL_WBM_SCATTERED_DESC_PTR_HEAD_INFO_IX1,
 909                            FIELD_PREP(
 910                                 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_39_32,
 911                                 ((u64)sbuf[nsbufs - 1].paddr >>
 912                                  HAL_ADDR_MSB_REG_SHIFT)) |
 913                            FIELD_PREP(HAL_WBM_SCATTERED_DESC_HEAD_P_OFFSET_IX1,
 914                                       (end_offset >> 2)));
 915         ath11k_hif_write32(ab,
 916                            HAL_SEQ_WCSS_UMAC_WBM_REG +
 917                            HAL_WBM_SCATTERED_DESC_PTR_HEAD_INFO_IX0,
 918                            FIELD_PREP(BUFFER_ADDR_INFO0_ADDR,
 919                                       sbuf[0].paddr));
 920
 921         ath11k_hif_write32(ab,
 922                            HAL_SEQ_WCSS_UMAC_WBM_REG +
 923                            HAL_WBM_SCATTERED_DESC_PTR_TAIL_INFO_IX0,
 924                            FIELD_PREP(BUFFER_ADDR_INFO0_ADDR,
 925                                       sbuf[0].paddr));
 926         ath11k_hif_write32(ab,
 927                            HAL_SEQ_WCSS_UMAC_WBM_REG +
 928                            HAL_WBM_SCATTERED_DESC_PTR_TAIL_INFO_IX1,
 929                            FIELD_PREP(
 930                                 HAL_WBM_SCATTERED_DESC_MSB_BASE_ADDR_39_32,
 931                                 ((u64)sbuf[0].paddr >> HAL_ADDR_MSB_REG_SHIFT)) |
 932                            FIELD_PREP(HAL_WBM_SCATTERED_DESC_TAIL_P_OFFSET_IX1,
 933                                       0));
 934         ath11k_hif_write32(ab,
 935                            HAL_SEQ_WCSS_UMAC_WBM_REG +
 936                            HAL_WBM_SCATTERED_DESC_PTR_HP_ADDR,
 937                            2 * tot_link_desc);
 938
 939         /* Enable the SRNG */
 940         ath11k_hif_write32(ab,
 941                            HAL_SEQ_WCSS_UMAC_WBM_REG +
 942                            HAL_WBM_IDLE_LINK_RING_MISC_ADDR(ab), 0x40);
 943 }
 944
 945 int ath11k_hal_srng_setup(struct ath11k_base *ab, enum hal_ring_type type,
 946                           int ring_num, int mac_id,
 947                           struct hal_srng_params *params)
 948 {
 949         struct ath11k_hal *hal = &ab->hal;
 950         struct hal_srng_config *srng_config = &ab->hal.srng_config[type];
 951         struct hal_srng *srng;
 952         int ring_id;
 953         u32 lmac_idx;
 954         int i;
 955         u32 reg_base;
 956
 957         ring_id = ath11k_hal_srng_get_ring_id(ab, type, ring_num, mac_id);
 958         if (ring_id < 0)
 959                 return ring_id;
 960
 961         srng = &hal->srng_list[ring_id];
 962
 963         srng->ring_id = ring_id;
 964         srng->ring_dir = srng_config->ring_dir;
 965         srng->ring_base_paddr = params->ring_base_paddr;
 966         srng->ring_base_vaddr = params->ring_base_vaddr;
 967         srng->entry_size = srng_config->entry_size;
 968         srng->num_entries = params->num_entries;
 969         srng->ring_size = srng->entry_size * srng->num_entries;
 970         srng->intr_batch_cntr_thres_entries =
 971                                 params->intr_batch_cntr_thres_entries;
 972         srng->intr_timer_thres_us = params->intr_timer_thres_us;
 973         srng->flags = params->flags;
 974         srng->msi_addr = params->msi_addr;
 975         srng->msi_data = params->msi_data;
 976         srng->initialized = 1;
 977         spin_lock_init(&srng->lock);
 978         lockdep_set_class(&srng->lock, hal->srng_key + ring_id);
 979
 980         for (i = 0; i < HAL_SRNG_NUM_REG_GRP; i++) {
 981                 srng->hwreg_base[i] = srng_config->reg_start[i] +
 982                                       (ring_num * srng_config->reg_size[i]);
 983         }
 984
 985         memset(srng->ring_base_vaddr, 0,
 986                (srng->entry_size * srng->num_entries) << 2);
 987
 988         /* TODO: Add comments on these swap configurations */
 989         if (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
 990                 srng->flags |= HAL_SRNG_FLAGS_MSI_SWAP | HAL_SRNG_FLAGS_DATA_TLV_SWAP |
 991                                HAL_SRNG_FLAGS_RING_PTR_SWAP;
 992
 993         reg_base = srng->hwreg_base[HAL_SRNG_REG_GRP_R2];
 994
 995         if (srng->ring_dir == HAL_SRNG_DIR_SRC) {
 996                 srng->u.src_ring.hp = 0;
 997                 srng->u.src_ring.cached_tp = 0;
 998                 srng->u.src_ring.reap_hp = srng->ring_size - srng->entry_size;
 999                 srng->u.src_ring.tp_addr = (void *)(hal->rdp.vaddr + ring_id);
1000                 srng->u.src_ring.low_threshold = params->low_threshold *
1001                                                  srng->entry_size;
1002                 if (srng_config->lmac_ring) {
1003                         lmac_idx = ring_id - HAL_SRNG_RING_ID_LMAC1_ID_START;
1004                         srng->u.src_ring.hp_addr = (void *)(hal->wrp.vaddr +
1005                                                    lmac_idx);
1006                         srng->flags |= HAL_SRNG_FLAGS_LMAC_RING;
1007                 } else {
1008                         if (!ab->hw_params.supports_shadow_regs)
1009                                 srng->u.src_ring.hp_addr =
1010                                 (u32 *)((unsigned long)ab->mem + reg_base);
1011                         else
1012                                 ath11k_dbg(ab, ATH11k_DBG_HAL,
1013                                            "hal type %d ring_num %d reg_base 0x%x shadow 0x%lx\n",
1014                                            type, ring_num,
1015                                            reg_base,
1016                                            (unsigned long)srng->u.src_ring.hp_addr -
1017                                            (unsigned long)ab->mem);
1018                 }
1019         } else {
1020                 /* During initialization loop count in all the descriptors
1021                  * will be set to zero, and HW will set it to 1 on completing
1022                  * descriptor update in first loop, and increments it by 1 on
1023                  * subsequent loops (loop count wraps around after reaching
1024                  * 0xffff). The 'loop_cnt' in SW ring state is the expected
1025                  * loop count in descriptors updated by HW (to be processed
1026                  * by SW).
1027                  */
1028                 srng->u.dst_ring.loop_cnt = 1;
1029                 srng->u.dst_ring.tp = 0;
1030                 srng->u.dst_ring.cached_hp = 0;
1031                 srng->u.dst_ring.hp_addr = (void *)(hal->rdp.vaddr + ring_id);
1032                 if (srng_config->lmac_ring) {
1033                         /* For LMAC rings, tail pointer updates will be done
1034                          * through FW by writing to a shared memory location
1035                          */
1036                         lmac_idx = ring_id - HAL_SRNG_RING_ID_LMAC1_ID_START;
1037                         srng->u.dst_ring.tp_addr = (void *)(hal->wrp.vaddr +
1038                                                    lmac_idx);
1039                         srng->flags |= HAL_SRNG_FLAGS_LMAC_RING;
1040                 } else {
1041                         if (!ab->hw_params.supports_shadow_regs)
1042                                 srng->u.dst_ring.tp_addr =
1043                                 (u32 *)((unsigned long)ab->mem + reg_base +
1044                                         (HAL_REO1_RING_TP(ab) - HAL_REO1_RING_HP(ab)));
1045                         else
1046                                 ath11k_dbg(ab, ATH11k_DBG_HAL,
1047                                            "type %d ring_num %d target_reg 0x%x shadow 0x%lx\n",
1048                                            type, ring_num,
1049                                            reg_base + (HAL_REO1_RING_TP(ab) -
1050                                                        HAL_REO1_RING_HP(ab)),
1051                                            (unsigned long)srng->u.dst_ring.tp_addr -
1052                                            (unsigned long)ab->mem);
1053                 }
1054         }
1055
1056         if (srng_config->lmac_ring)
1057                 return ring_id;
1058
1059         ath11k_hal_srng_hw_init(ab, srng);
1060
1061         if (type == HAL_CE_DST) {
1062                 srng->u.dst_ring.max_buffer_length = params->max_buffer_len;
1063                 ath11k_hal_ce_dst_setup(ab, srng, ring_num);
1064         }
1065
1066         return ring_id;
1067 }
1068
1069 static void ath11k_hal_srng_update_hp_tp_addr(struct ath11k_base *ab,
1070                                               int shadow_cfg_idx,
1071                                           enum hal_ring_type ring_type,
1072                                           int ring_num)
1073 {
1074         struct hal_srng *srng;
1075         struct ath11k_hal *hal = &ab->hal;
1076         int ring_id;
1077         struct hal_srng_config *srng_config = &hal->srng_config[ring_type];
1078
1079         ring_id = ath11k_hal_srng_get_ring_id(ab, ring_type, ring_num, 0);
1080         if (ring_id < 0)
1081                 return;
1082
1083         srng = &hal->srng_list[ring_id];
1084
1085         if (srng_config->ring_dir == HAL_SRNG_DIR_DST)
1086                 srng->u.dst_ring.tp_addr = (u32 *)(HAL_SHADOW_REG(ab, shadow_cfg_idx) +
1087                                                    (unsigned long)ab->mem);
1088         else
1089                 srng->u.src_ring.hp_addr = (u32 *)(HAL_SHADOW_REG(ab, shadow_cfg_idx) +
1090                                                    (unsigned long)ab->mem);
1091 }
1092
1093 int ath11k_hal_srng_update_shadow_config(struct ath11k_base *ab,
1094                                          enum hal_ring_type ring_type,
1095                                          int ring_num)
1096 {
1097         struct ath11k_hal *hal = &ab->hal;
1098         struct hal_srng_config *srng_config = &hal->srng_config[ring_type];
1099         int shadow_cfg_idx = hal->num_shadow_reg_configured;
1100         u32 target_reg;
1101
1102         if (shadow_cfg_idx >= HAL_SHADOW_NUM_REGS)
1103                 return -EINVAL;
1104
1105         hal->num_shadow_reg_configured++;
1106
1107         target_reg = srng_config->reg_start[HAL_HP_OFFSET_IN_REG_START];
1108         target_reg += srng_config->reg_size[HAL_HP_OFFSET_IN_REG_START] *
1109                 ring_num;
1110
1111         /* For destination ring, shadow the TP */
1112         if (srng_config->ring_dir == HAL_SRNG_DIR_DST)
1113                 target_reg += HAL_OFFSET_FROM_HP_TO_TP;
1114
1115         hal->shadow_reg_addr[shadow_cfg_idx] = target_reg;
1116
1117         /* update hp/tp addr to hal structure*/
1118         ath11k_hal_srng_update_hp_tp_addr(ab, shadow_cfg_idx, ring_type,
1119                                           ring_num);
1120
1121         ath11k_dbg(ab, ATH11k_DBG_HAL,
1122                    "target_reg %x, shadow reg 0x%x shadow_idx 0x%x, ring_type %d, ring num %d",
1123                   target_reg,
1124                   HAL_SHADOW_REG(ab, shadow_cfg_idx),
1125                   shadow_cfg_idx,
1126                   ring_type, ring_num);
1127
1128         return 0;
1129 }
1130
1131 void ath11k_hal_srng_shadow_config(struct ath11k_base *ab)
1132 {
1133         struct ath11k_hal *hal = &ab->hal;
1134         int ring_type, ring_num;
1135
1136         /* update all the non-CE srngs. */
1137         for (ring_type = 0; ring_type < HAL_MAX_RING_TYPES; ring_type++) {
1138                 struct hal_srng_config *srng_config = &hal->srng_config[ring_type];
1139
1140                 if (ring_type == HAL_CE_SRC ||
1141                     ring_type == HAL_CE_DST ||
1142                         ring_type == HAL_CE_DST_STATUS)
1143                         continue;
1144
1145                 if (srng_config->lmac_ring)
1146                         continue;
1147
1148                 for (ring_num = 0; ring_num < srng_config->max_rings; ring_num++)
1149                         ath11k_hal_srng_update_shadow_config(ab, ring_type, ring_num);
1150         }
1151 }
1152
1153 void ath11k_hal_srng_get_shadow_config(struct ath11k_base *ab,
1154                                        u32 **cfg, u32 *len)
1155 {
1156         struct ath11k_hal *hal = &ab->hal;
1157
1158         *len = hal->num_shadow_reg_configured;
1159         *cfg = hal->shadow_reg_addr;
1160 }
1161
1162 void ath11k_hal_srng_shadow_update_hp_tp(struct ath11k_base *ab,
1163                                          struct hal_srng *srng)
1164 {
1165         lockdep_assert_held(&srng->lock);
1166
1167         /* check whether the ring is emptry. Update the shadow
1168          * HP only when then ring isn't' empty.
1169          */
1170         if (srng->ring_dir == HAL_SRNG_DIR_SRC &&
1171             *srng->u.src_ring.tp_addr != srng->u.src_ring.hp)
1172                 ath11k_hal_srng_access_end(ab, srng);
1173 }
1174
1175 static int ath11k_hal_srng_create_config(struct ath11k_base *ab)
1176 {
1177         struct ath11k_hal *hal = &ab->hal;
1178         struct hal_srng_config *s;
1179
1180         hal->srng_config = kmemdup(hw_srng_config_template,
1181                                    sizeof(hw_srng_config_template),
1182                                    GFP_KERNEL);
1183         if (!hal->srng_config)
1184                 return -ENOMEM;
1185
1186         s = &hal->srng_config[HAL_REO_DST];
1187         s->reg_start[0] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO1_RING_BASE_LSB(ab);
1188         s->reg_start[1] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO1_RING_HP(ab);
1189         s->reg_size[0] = HAL_REO2_RING_BASE_LSB(ab) - HAL_REO1_RING_BASE_LSB(ab);
1190         s->reg_size[1] = HAL_REO2_RING_HP(ab) - HAL_REO1_RING_HP(ab);
1191
1192         s = &hal->srng_config[HAL_REO_EXCEPTION];
1193         s->reg_start[0] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_TCL_RING_BASE_LSB(ab);
1194         s->reg_start[1] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_TCL_RING_HP(ab);
1195
1196         s = &hal->srng_config[HAL_REO_REINJECT];
1197         s->reg_start[0] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_SW2REO_RING_BASE_LSB(ab);
1198         s->reg_start[1] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_SW2REO_RING_HP(ab);
1199
1200         s = &hal->srng_config[HAL_REO_CMD];
1201         s->reg_start[0] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_CMD_RING_BASE_LSB(ab);
1202         s->reg_start[1] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_CMD_HP(ab);
1203
1204         s = &hal->srng_config[HAL_REO_STATUS];
1205         s->reg_start[0] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_STATUS_RING_BASE_LSB(ab);
1206         s->reg_start[1] = HAL_SEQ_WCSS_UMAC_REO_REG + HAL_REO_STATUS_HP(ab);
1207
1208         s = &hal->srng_config[HAL_TCL_DATA];
1209         s->reg_start[0] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL1_RING_BASE_LSB(ab);
1210         s->reg_start[1] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL1_RING_HP;
1211         s->reg_size[0] = HAL_TCL2_RING_BASE_LSB(ab) - HAL_TCL1_RING_BASE_LSB(ab);
1212         s->reg_size[1] = HAL_TCL2_RING_HP - HAL_TCL1_RING_HP;
1213
1214         s = &hal->srng_config[HAL_TCL_CMD];
1215         s->reg_start[0] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL_RING_BASE_LSB(ab);
1216         s->reg_start[1] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL_RING_HP;
1217
1218         s = &hal->srng_config[HAL_TCL_STATUS];
1219         s->reg_start[0] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL_STATUS_RING_BASE_LSB(ab);
1220         s->reg_start[1] = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL_STATUS_RING_HP;
1221
1222         s = &hal->srng_config[HAL_CE_SRC];
1223         s->reg_start[0] = HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab) + HAL_CE_DST_RING_BASE_LSB;
1224         s->reg_start[1] = HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab) + HAL_CE_DST_RING_HP;
1225         s->reg_size[0] = HAL_SEQ_WCSS_UMAC_CE1_SRC_REG(ab) -
1226                 HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab);
1227         s->reg_size[1] = HAL_SEQ_WCSS_UMAC_CE1_SRC_REG(ab) -
1228                 HAL_SEQ_WCSS_UMAC_CE0_SRC_REG(ab);
1229
1230         s = &hal->srng_config[HAL_CE_DST];
1231         s->reg_start[0] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) + HAL_CE_DST_RING_BASE_LSB;
1232         s->reg_start[1] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) + HAL_CE_DST_RING_HP;
1233         s->reg_size[0] = HAL_SEQ_WCSS_UMAC_CE1_DST_REG(ab) -
1234                 HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab);
1235         s->reg_size[1] = HAL_SEQ_WCSS_UMAC_CE1_DST_REG(ab) -
1236                 HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab);
1237
1238         s = &hal->srng_config[HAL_CE_DST_STATUS];
1239         s->reg_start[0] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) +
1240                 HAL_CE_DST_STATUS_RING_BASE_LSB;
1241         s->reg_start[1] = HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab) + HAL_CE_DST_STATUS_RING_HP;
1242         s->reg_size[0] = HAL_SEQ_WCSS_UMAC_CE1_DST_REG(ab) -
1243                 HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab);
1244         s->reg_size[1] = HAL_SEQ_WCSS_UMAC_CE1_DST_REG(ab) -
1245                 HAL_SEQ_WCSS_UMAC_CE0_DST_REG(ab);
1246
1247         s = &hal->srng_config[HAL_WBM_IDLE_LINK];
1248         s->reg_start[0] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_IDLE_LINK_RING_BASE_LSB(ab);
1249         s->reg_start[1] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_IDLE_LINK_RING_HP;
1250
1251         s = &hal->srng_config[HAL_SW2WBM_RELEASE];
1252         s->reg_start[0] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_RELEASE_RING_BASE_LSB(ab);
1253         s->reg_start[1] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM_RELEASE_RING_HP;
1254
1255         s = &hal->srng_config[HAL_WBM2SW_RELEASE];
1256         s->reg_start[0] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM0_RELEASE_RING_BASE_LSB(ab);
1257         s->reg_start[1] = HAL_SEQ_WCSS_UMAC_WBM_REG + HAL_WBM0_RELEASE_RING_HP;
1258         s->reg_size[0] = HAL_WBM1_RELEASE_RING_BASE_LSB(ab) -
1259                 HAL_WBM0_RELEASE_RING_BASE_LSB(ab);
1260         s->reg_size[1] = HAL_WBM1_RELEASE_RING_HP - HAL_WBM0_RELEASE_RING_HP;
1261
1262         return 0;
1263 }
1264
1265 static void ath11k_hal_register_srng_key(struct ath11k_base *ab)
1266 {
1267         struct ath11k_hal *hal = &ab->hal;
1268         u32 ring_id;
1269
1270         for (ring_id = 0; ring_id < HAL_SRNG_RING_ID_MAX; ring_id++)
1271                 lockdep_register_key(hal->srng_key + ring_id);
1272 }
1273
1274 static void ath11k_hal_unregister_srng_key(struct ath11k_base *ab)
1275 {
1276         struct ath11k_hal *hal = &ab->hal;
1277         u32 ring_id;
1278
1279         for (ring_id = 0; ring_id < HAL_SRNG_RING_ID_MAX; ring_id++)
1280                 lockdep_unregister_key(hal->srng_key + ring_id);
1281 }
1282
1283 int ath11k_hal_srng_init(struct ath11k_base *ab)
1284 {
1285         struct ath11k_hal *hal = &ab->hal;
1286         int ret;
1287
1288         memset(hal, 0, sizeof(*hal));
1289
1290         ret = ath11k_hal_srng_create_config(ab);
1291         if (ret)
1292                 goto err_hal;
1293
1294         ret = ath11k_hal_alloc_cont_rdp(ab);
1295         if (ret)
1296                 goto err_hal;
1297
1298         ret = ath11k_hal_alloc_cont_wrp(ab);
1299         if (ret)
1300                 goto err_free_cont_rdp;
1301
1302         ath11k_hal_register_srng_key(ab);
1303
1304         return 0;
1305
1306 err_free_cont_rdp:
1307         ath11k_hal_free_cont_rdp(ab);
1308
1309 err_hal:
1310         return ret;
1311 }
1312 EXPORT_SYMBOL(ath11k_hal_srng_init);
1313
1314 void ath11k_hal_srng_deinit(struct ath11k_base *ab)
1315 {
1316         struct ath11k_hal *hal = &ab->hal;
1317
1318         ath11k_hal_unregister_srng_key(ab);
1319         ath11k_hal_free_cont_rdp(ab);
1320         ath11k_hal_free_cont_wrp(ab);
1321         kfree(hal->srng_config);
1322 }
1323 EXPORT_SYMBOL(ath11k_hal_srng_deinit);
1324
1325 void ath11k_hal_dump_srng_stats(struct ath11k_base *ab)
1326 {
1327         struct hal_srng *srng;
1328         struct ath11k_ext_irq_grp *irq_grp;
1329         struct ath11k_ce_pipe *ce_pipe;
1330         int i;
1331
1332         ath11k_err(ab, "Last interrupt received for each CE:\n");
1333         for (i = 0; i < ab->hw_params.ce_count; i++) {
1334                 ce_pipe = &ab->ce.ce_pipe[i];
1335
1336                 if (ath11k_ce_get_attr_flags(ab, i) & CE_ATTR_DIS_INTR)
1337                         continue;
1338
1339                 ath11k_err(ab, "CE_id %d pipe_num %d %ums before\n",
1340                            i, ce_pipe->pipe_num,
1341                            jiffies_to_msecs(jiffies - ce_pipe->timestamp));
1342         }
1343
1344         ath11k_err(ab, "\nLast interrupt received for each group:\n");
1345         for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
1346                 irq_grp = &ab->ext_irq_grp[i];
1347                 ath11k_err(ab, "group_id %d %ums before\n",
1348                            irq_grp->grp_id,
1349                            jiffies_to_msecs(jiffies - irq_grp->timestamp));
1350         }
1351
1352         for (i = 0; i < HAL_SRNG_RING_ID_MAX; i++) {
1353                 srng = &ab->hal.srng_list[i];
1354
1355                 if (!srng->initialized)
1356                         continue;
1357
1358                 if (srng->ring_dir == HAL_SRNG_DIR_SRC)
1359                         ath11k_err(ab,
1360                                    "src srng id %u hp %u, reap_hp %u, cur tp %u, cached tp %u last tp %u napi processed before %ums\n",
1361                                    srng->ring_id, srng->u.src_ring.hp,
1362                                    srng->u.src_ring.reap_hp,
1363                                    *srng->u.src_ring.tp_addr, srng->u.src_ring.cached_tp,
1364                                    srng->u.src_ring.last_tp,
1365                                    jiffies_to_msecs(jiffies - srng->timestamp));
1366                 else if (srng->ring_dir == HAL_SRNG_DIR_DST)
1367                         ath11k_err(ab,
1368                                    "dst srng id %u tp %u, cur hp %u, cached hp %u last hp %u napi processed before %ums\n",
1369                                    srng->ring_id, srng->u.dst_ring.tp,
1370                                    *srng->u.dst_ring.hp_addr,
1371                                    srng->u.dst_ring.cached_hp,
1372                                    srng->u.dst_ring.last_hp,
1373                                    jiffies_to_msecs(jiffies - srng->timestamp));
1374         }
1375 }