uboot/drivers/net/octeontx/nicvf_queues.h
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   1/* SPDX-License-Identifier:    GPL-2.0
   2 *
   3 * Copyright (C) 2018 Marvell International Ltd.
   4 */
   5
   6#ifndef NICVF_QUEUES_H
   7#define NICVF_QUEUES_H
   8
   9#include "q_struct.h"
  10
  11#define MAX_QUEUE_SET                   128
  12#define MAX_RCV_QUEUES_PER_QS           8
  13#define MAX_RCV_BUF_DESC_RINGS_PER_QS   2
  14#define MAX_SND_QUEUES_PER_QS           8
  15#define MAX_CMP_QUEUES_PER_QS           8
  16
  17/* VF's queue interrupt ranges */
  18#define NICVF_INTR_ID_CQ                0
  19#define NICVF_INTR_ID_SQ                8
  20#define NICVF_INTR_ID_RBDR              16
  21#define NICVF_INTR_ID_MISC              18
  22#define NICVF_INTR_ID_QS_ERR            19
  23
  24#define RBDR_SIZE0              0ULL /* 8K entries */
  25#define RBDR_SIZE1              1ULL /* 16K entries */
  26#define RBDR_SIZE2              2ULL /* 32K entries */
  27#define RBDR_SIZE3              3ULL /* 64K entries */
  28#define RBDR_SIZE4              4ULL /* 126K entries */
  29#define RBDR_SIZE5              5ULL /* 256K entries */
  30#define RBDR_SIZE6              6ULL /* 512K entries */
  31
  32#define SND_QUEUE_SIZE0         0ULL /* 1K entries */
  33#define SND_QUEUE_SIZE1         1ULL /* 2K entries */
  34#define SND_QUEUE_SIZE2         2ULL /* 4K entries */
  35#define SND_QUEUE_SIZE3         3ULL /* 8K entries */
  36#define SND_QUEUE_SIZE4         4ULL /* 16K entries */
  37#define SND_QUEUE_SIZE5         5ULL /* 32K entries */
  38#define SND_QUEUE_SIZE6         6ULL /* 64K entries */
  39
  40#define CMP_QUEUE_SIZE0         0ULL /* 1K entries */
  41#define CMP_QUEUE_SIZE1         1ULL /* 2K entries */
  42#define CMP_QUEUE_SIZE2         2ULL /* 4K entries */
  43#define CMP_QUEUE_SIZE3         3ULL /* 8K entries */
  44#define CMP_QUEUE_SIZE4         4ULL /* 16K entries */
  45#define CMP_QUEUE_SIZE5         5ULL /* 32K entries */
  46#define CMP_QUEUE_SIZE6         6ULL /* 64K entries */
  47
  48/* Default queue count per QS, its lengths and threshold values */
  49#define RBDR_CNT                        1
  50#define RCV_QUEUE_CNT           1
  51#define SND_QUEUE_CNT           1
  52#define CMP_QUEUE_CNT           1 /* Max of RCV and SND qcount */
  53
  54#define SND_QSIZE               SND_QUEUE_SIZE0
  55#define SND_QUEUE_LEN           BIT_ULL((SND_QSIZE + 10))
  56#define SND_QUEUE_THRESH        2ULL
  57#define MIN_SQ_DESC_PER_PKT_XMIT        2
  58#define MAX_CQE_PER_PKT_XMIT            2
  59
  60#define CMP_QSIZE               CMP_QUEUE_SIZE0
  61#define CMP_QUEUE_LEN           BIT_ULL((CMP_QSIZE + 10))
  62#define CMP_QUEUE_CQE_THRESH    0
  63#define CMP_QUEUE_TIMER_THRESH  1 /* 1 ms */
  64
  65#define RBDR_SIZE               RBDR_SIZE0
  66#define RCV_BUF_COUNT           BIT_ULL((RBDR_SIZE + 13))
  67#define RBDR_THRESH             (RCV_BUF_COUNT / 2)
  68#define DMA_BUFFER_LEN          2048 /* In multiples of 128bytes */
  69#define RCV_FRAG_LEN            DMA_BUFFER_LEN
  70
  71#define MAX_CQES_FOR_TX         ((SND_QUEUE_LEN / MIN_SQ_DESC_PER_PKT_XMIT) *\
  72                                 MAX_CQE_PER_PKT_XMIT)
  73#define RQ_CQ_DROP              ((CMP_QUEUE_LEN - MAX_CQES_FOR_TX) / 256)
  74
  75/* Descriptor size */
  76#define SND_QUEUE_DESC_SIZE     16   /* 128 bits */
  77#define CMP_QUEUE_DESC_SIZE     512
  78
  79/* Buffer / descriptor alignments */
  80#define NICVF_RCV_BUF_ALIGN             7
  81#define NICVF_RCV_BUF_ALIGN_BYTES       BIT_ULL(NICVF_RCV_BUF_ALIGN)
  82#define NICVF_CQ_BASE_ALIGN_BYTES       512  /* 9 bits */
  83#define NICVF_SQ_BASE_ALIGN_BYTES       128  /* 7 bits */
  84
  85#define NICVF_ALIGNED_ADDR(ADDR, ALIGN_BYTES)   ALIGN(ADDR, ALIGN_BYTES)
  86
  87/* Queue enable/disable */
  88#define NICVF_SQ_EN            BIT_ULL(19)
  89
  90/* Queue reset */
  91#define NICVF_CQ_RESET          BIT_ULL(41)
  92#define NICVF_SQ_RESET          BIT_ULL(17)
  93#define NICVF_RBDR_RESET        BIT_ULL(43)
  94
  95enum CQ_RX_ERRLVL_E {
  96        CQ_ERRLVL_MAC,
  97        CQ_ERRLVL_L2,
  98        CQ_ERRLVL_L3,
  99        CQ_ERRLVL_L4,
 100};
 101
 102enum CQ_RX_ERROP_E {
 103        CQ_RX_ERROP_RE_NONE = 0x0,
 104        CQ_RX_ERROP_RE_PARTIAL = 0x1,
 105        CQ_RX_ERROP_RE_JABBER = 0x2,
 106        CQ_RX_ERROP_RE_FCS = 0x7,
 107        CQ_RX_ERROP_RE_TERMINATE = 0x9,
 108        CQ_RX_ERROP_RE_RX_CTL = 0xb,
 109        CQ_RX_ERROP_PREL2_ERR = 0x1f,
 110        CQ_RX_ERROP_L2_FRAGMENT = 0x20,
 111        CQ_RX_ERROP_L2_OVERRUN = 0x21,
 112        CQ_RX_ERROP_L2_PFCS = 0x22,
 113        CQ_RX_ERROP_L2_PUNY = 0x23,
 114        CQ_RX_ERROP_L2_MAL = 0x24,
 115        CQ_RX_ERROP_L2_OVERSIZE = 0x25,
 116        CQ_RX_ERROP_L2_UNDERSIZE = 0x26,
 117        CQ_RX_ERROP_L2_LENMISM = 0x27,
 118        CQ_RX_ERROP_L2_PCLP = 0x28,
 119        CQ_RX_ERROP_IP_NOT = 0x41,
 120        CQ_RX_ERROP_IP_CSUM_ERR = 0x42,
 121        CQ_RX_ERROP_IP_MAL = 0x43,
 122        CQ_RX_ERROP_IP_MALD = 0x44,
 123        CQ_RX_ERROP_IP_HOP = 0x45,
 124        CQ_RX_ERROP_L3_ICRC = 0x46,
 125        CQ_RX_ERROP_L3_PCLP = 0x47,
 126        CQ_RX_ERROP_L4_MAL = 0x61,
 127        CQ_RX_ERROP_L4_CHK = 0x62,
 128        CQ_RX_ERROP_UDP_LEN = 0x63,
 129        CQ_RX_ERROP_L4_PORT = 0x64,
 130        CQ_RX_ERROP_TCP_FLAG = 0x65,
 131        CQ_RX_ERROP_TCP_OFFSET = 0x66,
 132        CQ_RX_ERROP_L4_PCLP = 0x67,
 133        CQ_RX_ERROP_RBDR_TRUNC = 0x70,
 134};
 135
 136enum CQ_TX_ERROP_E {
 137        CQ_TX_ERROP_GOOD = 0x0,
 138        CQ_TX_ERROP_DESC_FAULT = 0x10,
 139        CQ_TX_ERROP_HDR_CONS_ERR = 0x11,
 140        CQ_TX_ERROP_SUBDC_ERR = 0x12,
 141        CQ_TX_ERROP_IMM_SIZE_OFLOW = 0x80,
 142        CQ_TX_ERROP_DATA_SEQUENCE_ERR = 0x81,
 143        CQ_TX_ERROP_MEM_SEQUENCE_ERR = 0x82,
 144        CQ_TX_ERROP_LOCK_VIOL = 0x83,
 145        CQ_TX_ERROP_DATA_FAULT = 0x84,
 146        CQ_TX_ERROP_TSTMP_CONFLICT = 0x85,
 147        CQ_TX_ERROP_TSTMP_TIMEOUT = 0x86,
 148        CQ_TX_ERROP_MEM_FAULT = 0x87,
 149        CQ_TX_ERROP_CK_OVERLAP = 0x88,
 150        CQ_TX_ERROP_CK_OFLOW = 0x89,
 151        CQ_TX_ERROP_ENUM_LAST = 0x8a,
 152};
 153
 154struct cmp_queue_stats {
 155        struct rx_stats {
 156                struct {
 157                        u64 mac_errs;
 158                        u64 l2_errs;
 159                        u64 l3_errs;
 160                        u64 l4_errs;
 161                } errlvl;
 162                struct {
 163                        u64 good;
 164                        u64 partial_pkts;
 165                        u64 jabber_errs;
 166                        u64 fcs_errs;
 167                        u64 terminate_errs;
 168                        u64 bgx_rx_errs;
 169                        u64 prel2_errs;
 170                        u64 l2_frags;
 171                        u64 l2_overruns;
 172                        u64 l2_pfcs;
 173                        u64 l2_puny;
 174                        u64 l2_hdr_malformed;
 175                        u64 l2_oversize;
 176                        u64 l2_undersize;
 177                        u64 l2_len_mismatch;
 178                        u64 l2_pclp;
 179                        u64 non_ip;
 180                        u64 ip_csum_err;
 181                        u64 ip_hdr_malformed;
 182                        u64 ip_payload_malformed;
 183                        u64 ip_hop_errs;
 184                        u64 l3_icrc_errs;
 185                        u64 l3_pclp;
 186                        u64 l4_malformed;
 187                        u64 l4_csum_errs;
 188                        u64 udp_len_err;
 189                        u64 bad_l4_port;
 190                        u64 bad_tcp_flag;
 191                        u64 tcp_offset_errs;
 192                        u64 l4_pclp;
 193                        u64 pkt_truncated;
 194                } errop;
 195        } rx;
 196        struct tx_stats {
 197                u64 good;
 198                u64 desc_fault;
 199                u64 hdr_cons_err;
 200                u64 subdesc_err;
 201                u64 imm_size_oflow;
 202                u64 data_seq_err;
 203                u64 mem_seq_err;
 204                u64 lock_viol;
 205                u64 data_fault;
 206                u64 tstmp_conflict;
 207                u64 tstmp_timeout;
 208                u64 mem_fault;
 209                u64 csum_overlap;
 210                u64 csum_overflow;
 211        } tx;
 212};
 213
 214enum RQ_SQ_STATS {
 215        RQ_SQ_STATS_OCTS,
 216        RQ_SQ_STATS_PKTS,
 217};
 218
 219struct rx_tx_queue_stats {
 220        u64     bytes;
 221        u64     pkts;
 222};
 223
 224struct q_desc_mem {
 225        uintptr_t       dma;
 226        u64     size;
 227        u16     q_len;
 228        uintptr_t       phys_base;
 229        void            *base;
 230        void            *unalign_base;
 231        bool            allocated;
 232};
 233
 234struct rbdr {
 235        bool            enable;
 236        u32     dma_size;
 237        u32     thresh;      /* Threshold level for interrupt */
 238        void            *desc;
 239        u32     head;
 240        u32     tail;
 241        struct          q_desc_mem   dmem;
 242        uintptr_t       buf_mem;
 243        uintptr_t       buffers;
 244};
 245
 246struct rcv_queue {
 247        bool            enable;
 248        struct  rbdr    *rbdr_start;
 249        struct  rbdr    *rbdr_cont;
 250        bool            en_tcp_reassembly;
 251        u8              cq_qs;  /* CQ's QS to which this RQ is assigned */
 252        u8              cq_idx; /* CQ index (0 to 7) in the QS */
 253        u8              cont_rbdr_qs;      /* Continue buffer ptrs - QS num */
 254        u8              cont_qs_rbdr_idx;  /* RBDR idx in the cont QS */
 255        u8              start_rbdr_qs;     /* First buffer ptrs - QS num */
 256        u8              start_qs_rbdr_idx; /* RBDR idx in the above QS */
 257        u8         caching;
 258        struct          rx_tx_queue_stats stats;
 259};
 260
 261struct cmp_queue {
 262        bool            enable;
 263        u16     intr_timer_thresh;
 264        u16     thresh;
 265        void            *desc;
 266        struct q_desc_mem   dmem;
 267        struct cmp_queue_stats  stats;
 268};
 269
 270struct snd_queue {
 271        bool            enable;
 272        u8              cq_qs;  /* CQ's QS to which this SQ is pointing */
 273        u8              cq_idx; /* CQ index (0 to 7) in the above QS */
 274        u16     thresh;
 275        u32     free_cnt;
 276        u32     head;
 277        u32     tail;
 278        u64     *skbuff;
 279        void            *desc;
 280        struct q_desc_mem   dmem;
 281        struct rx_tx_queue_stats stats;
 282};
 283
 284struct queue_set {
 285        bool            enable;
 286        bool            be_en;
 287        u8              vnic_id;
 288        u8              rq_cnt;
 289        u8              cq_cnt;
 290        u64     cq_len;
 291        u8              sq_cnt;
 292        u64     sq_len;
 293        u8              rbdr_cnt;
 294        u64     rbdr_len;
 295        struct  rcv_queue       rq[MAX_RCV_QUEUES_PER_QS];
 296        struct  cmp_queue       cq[MAX_CMP_QUEUES_PER_QS];
 297        struct  snd_queue       sq[MAX_SND_QUEUES_PER_QS];
 298        struct  rbdr            rbdr[MAX_RCV_BUF_DESC_RINGS_PER_QS];
 299};
 300
 301#define GET_RBDR_DESC(RING, idx)\
 302                (&(((struct rbdr_entry_t *)((RING)->desc))[idx]))
 303#define GET_SQ_DESC(RING, idx)\
 304                (&(((struct sq_hdr_subdesc *)((RING)->desc))[idx]))
 305#define GET_CQ_DESC(RING, idx)\
 306                (&(((union cq_desc_t *)((RING)->desc))[idx]))
 307
 308/* CQ status bits */
 309#define CQ_WR_FULL      BIT(26)
 310#define CQ_WR_DISABLE   BIT(25)
 311#define CQ_WR_FAULT     BIT(24)
 312#define CQ_CQE_COUNT    (0xFFFF << 0)
 313
 314#define CQ_ERR_MASK     (CQ_WR_FULL | CQ_WR_DISABLE | CQ_WR_FAULT)
 315
 316int nicvf_set_qset_resources(struct nicvf *nic);
 317int nicvf_config_data_transfer(struct nicvf *nic, bool enable);
 318void nicvf_qset_config(struct nicvf *nic, bool enable);
 319void nicvf_cmp_queue_config(struct nicvf *nic, struct queue_set *qs,
 320                            int qidx, bool enable);
 321
 322void nicvf_sq_enable(struct nicvf *nic, struct snd_queue *sq, int qidx);
 323void nicvf_sq_disable(struct nicvf *nic, int qidx);
 324void nicvf_put_sq_desc(struct snd_queue *sq, int desc_cnt);
 325void nicvf_sq_free_used_descs(struct udevice *dev,
 326                              struct snd_queue *sq, int qidx);
 327int nicvf_sq_append_pkt(struct nicvf *nic, void *pkt, size_t pkt_len);
 328
 329void *nicvf_get_rcv_pkt(struct nicvf *nic, void *cq_desc, size_t *pkt_len);
 330void nicvf_refill_rbdr(struct nicvf *nic);
 331
 332void nicvf_enable_intr(struct nicvf *nic, int int_type, int q_idx);
 333void nicvf_disable_intr(struct nicvf *nic, int int_type, int q_idx);
 334void nicvf_clear_intr(struct nicvf *nic, int int_type, int q_idx);
 335int nicvf_is_intr_enabled(struct nicvf *nic, int int_type, int q_idx);
 336
 337/* Register access APIs */
 338void nicvf_reg_write(struct nicvf *nic, u64 offset, u64 val);
 339u64 nicvf_reg_read(struct nicvf *nic, u64 offset);
 340void nicvf_qset_reg_write(struct nicvf *nic, u64 offset, u64 val);
 341u64 nicvf_qset_reg_read(struct nicvf *nic, u64 offset);
 342void nicvf_queue_reg_write(struct nicvf *nic, u64 offset,
 343                           u64 qidx, u64 val);
 344u64 nicvf_queue_reg_read(struct nicvf *nic, u64 offset, u64 qidx);
 345
 346/* Stats */
 347void nicvf_update_rq_stats(struct nicvf *nic, int rq_idx);
 348void nicvf_update_sq_stats(struct nicvf *nic, int sq_idx);
 349int nicvf_check_cqe_rx_errs(struct nicvf *nic,
 350                            struct cmp_queue *cq, void *cq_desc);
 351int nicvf_check_cqe_tx_errs(struct nicvf *nic,
 352                            struct cmp_queue *cq, void *cq_desc);
 353#endif /* NICVF_QUEUES_H */
 354