drivers/net/ethernet/qlogic/qede/qede.h

   1 /* QLogic qede NIC Driver
   2 * Copyright (c) 2015 QLogic Corporation
   3 *
   4 * This software is available under the terms of the GNU General Public License
   5 * (GPL) Version 2, available from the file COPYING in the main directory of
   6 * this source tree.
   7 */
   8
   9 #ifndef _QEDE_H_
  10 #define _QEDE_H_
  11 #include <linux/compiler.h>
  12 #include <linux/version.h>
  13 #include <linux/workqueue.h>
  14 #include <linux/netdevice.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/bitmap.h>
  17 #include <linux/kernel.h>
  18 #include <linux/mutex.h>
  19 #include <linux/io.h>
  20 #include <linux/qed/common_hsi.h>
  21 #include <linux/qed/eth_common.h>
  22 #include <linux/qed/qed_if.h>
  23 #include <linux/qed/qed_chain.h>
  24 #include <linux/qed/qed_eth_if.h>
  25
  26 #define QEDE_MAJOR_VERSION              8
  27 #define QEDE_MINOR_VERSION              10
  28 #define QEDE_REVISION_VERSION           9
  29 #define QEDE_ENGINEERING_VERSION        20
  30 #define DRV_MODULE_VERSION __stringify(QEDE_MAJOR_VERSION) "."  \
  31                 __stringify(QEDE_MINOR_VERSION) "."             \
  32                 __stringify(QEDE_REVISION_VERSION) "."          \
  33                 __stringify(QEDE_ENGINEERING_VERSION)
  34
  35 #define DRV_MODULE_SYM          qede
  36
  37 struct qede_stats {
  38         u64 no_buff_discards;
  39         u64 packet_too_big_discard;
  40         u64 ttl0_discard;
  41         u64 rx_ucast_bytes;
  42         u64 rx_mcast_bytes;
  43         u64 rx_bcast_bytes;
  44         u64 rx_ucast_pkts;
  45         u64 rx_mcast_pkts;
  46         u64 rx_bcast_pkts;
  47         u64 mftag_filter_discards;
  48         u64 mac_filter_discards;
  49         u64 tx_ucast_bytes;
  50         u64 tx_mcast_bytes;
  51         u64 tx_bcast_bytes;
  52         u64 tx_ucast_pkts;
  53         u64 tx_mcast_pkts;
  54         u64 tx_bcast_pkts;
  55         u64 tx_err_drop_pkts;
  56         u64 coalesced_pkts;
  57         u64 coalesced_events;
  58         u64 coalesced_aborts_num;
  59         u64 non_coalesced_pkts;
  60         u64 coalesced_bytes;
  61
  62         /* port */
  63         u64 rx_64_byte_packets;
  64         u64 rx_65_to_127_byte_packets;
  65         u64 rx_128_to_255_byte_packets;
  66         u64 rx_256_to_511_byte_packets;
  67         u64 rx_512_to_1023_byte_packets;
  68         u64 rx_1024_to_1518_byte_packets;
  69         u64 rx_1519_to_1522_byte_packets;
  70         u64 rx_1519_to_2047_byte_packets;
  71         u64 rx_2048_to_4095_byte_packets;
  72         u64 rx_4096_to_9216_byte_packets;
  73         u64 rx_9217_to_16383_byte_packets;
  74         u64 rx_crc_errors;
  75         u64 rx_mac_crtl_frames;
  76         u64 rx_pause_frames;
  77         u64 rx_pfc_frames;
  78         u64 rx_align_errors;
  79         u64 rx_carrier_errors;
  80         u64 rx_oversize_packets;
  81         u64 rx_jabbers;
  82         u64 rx_undersize_packets;
  83         u64 rx_fragments;
  84         u64 tx_64_byte_packets;
  85         u64 tx_65_to_127_byte_packets;
  86         u64 tx_128_to_255_byte_packets;
  87         u64 tx_256_to_511_byte_packets;
  88         u64 tx_512_to_1023_byte_packets;
  89         u64 tx_1024_to_1518_byte_packets;
  90         u64 tx_1519_to_2047_byte_packets;
  91         u64 tx_2048_to_4095_byte_packets;
  92         u64 tx_4096_to_9216_byte_packets;
  93         u64 tx_9217_to_16383_byte_packets;
  94         u64 tx_pause_frames;
  95         u64 tx_pfc_frames;
  96         u64 tx_lpi_entry_count;
  97         u64 tx_total_collisions;
  98         u64 brb_truncates;
  99         u64 brb_discards;
 100         u64 tx_mac_ctrl_frames;
 101 };
 102
 103 struct qede_vlan {
 104         struct list_head list;
 105         u16 vid;
 106         bool configured;
 107 };
 108
 109 struct qede_dev {
 110         struct qed_dev                  *cdev;
 111         struct net_device               *ndev;
 112         struct pci_dev                  *pdev;
 113
 114         u32                             dp_module;
 115         u8                              dp_level;
 116
 117         u32 flags;
 118 #define QEDE_FLAG_IS_VF BIT(0)
 119 #define IS_VF(edev)     (!!((edev)->flags & QEDE_FLAG_IS_VF))
 120
 121         const struct qed_eth_ops        *ops;
 122
 123         struct qed_dev_eth_info dev_info;
 124 #define QEDE_MAX_RSS_CNT(edev)  ((edev)->dev_info.num_queues)
 125 #define QEDE_MAX_TSS_CNT(edev)  ((edev)->dev_info.num_queues * \
 126                                  (edev)->dev_info.num_tc)
 127
 128         struct qede_fastpath            *fp_array;
 129         u8                              req_num_tx;
 130         u8                              fp_num_tx;
 131         u8                              req_num_rx;
 132         u8                              fp_num_rx;
 133         u16                             req_queues;
 134         u16                             num_queues;
 135         u8                              num_tc;
 136 #define QEDE_QUEUE_CNT(edev)    ((edev)->num_queues)
 137 #define QEDE_RSS_COUNT(edev)    ((edev)->num_queues - (edev)->fp_num_tx)
 138 #define QEDE_TSS_COUNT(edev)    (((edev)->num_queues - (edev)->fp_num_rx) * \
 139                                  (edev)->num_tc)
 140 #define QEDE_TX_IDX(edev, txqidx)       ((edev)->fp_num_rx + (txqidx) % \
 141                                          QEDE_TSS_COUNT(edev))
 142 #define QEDE_TC_IDX(edev, txqidx)       ((txqidx) / QEDE_TSS_COUNT(edev))
 143 #define QEDE_TX_QUEUE(edev, txqidx)     \
 144         (&(edev)->fp_array[QEDE_TX_IDX((edev), (txqidx))].txqs[QEDE_TC_IDX(\
 145                                                         (edev), (txqidx))])
 146
 147         struct qed_int_info             int_info;
 148         unsigned char                   primary_mac[ETH_ALEN];
 149
 150         /* Smaller private varaiant of the RTNL lock */
 151         struct mutex                    qede_lock;
 152         u32                             state; /* Protected by qede_lock */
 153         u16                             rx_buf_size;
 154         u32                             rx_copybreak;
 155
 156         /* L2 header size + 2*VLANs (8 bytes) + LLC SNAP (8 bytes) */
 157 #define ETH_OVERHEAD                    (ETH_HLEN + 8 + 8)
 158         /* Max supported alignment is 256 (8 shift)
 159          * minimal alignment shift 6 is optimal for 57xxx HW performance
 160          */
 161 #define QEDE_RX_ALIGN_SHIFT             max(6, min(8, L1_CACHE_SHIFT))
 162         /* We assume skb_build() uses sizeof(struct skb_shared_info) bytes
 163          * at the end of skb->data, to avoid wasting a full cache line.
 164          * This reduces memory use (skb->truesize).
 165          */
 166 #define QEDE_FW_RX_ALIGN_END                                    \
 167         max_t(u64, 1UL << QEDE_RX_ALIGN_SHIFT,                  \
 168               SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))
 169
 170         struct qede_stats               stats;
 171 #define QEDE_RSS_INDIR_INITED   BIT(0)
 172 #define QEDE_RSS_KEY_INITED     BIT(1)
 173 #define QEDE_RSS_CAPS_INITED    BIT(2)
 174         u32 rss_params_inited; /* bit-field to track initialized rss params */
 175         struct qed_update_vport_rss_params      rss_params;
 176         u16                     q_num_rx_buffers; /* Must be a power of two */
 177         u16                     q_num_tx_buffers; /* Must be a power of two */
 178
 179         bool gro_disable;
 180         struct list_head vlan_list;
 181         u16 configured_vlans;
 182         u16 non_configured_vlans;
 183         bool accept_any_vlan;
 184         struct delayed_work             sp_task;
 185         unsigned long                   sp_flags;
 186         u16                             vxlan_dst_port;
 187         u16                             geneve_dst_port;
 188 };
 189
 190 enum QEDE_STATE {
 191         QEDE_STATE_CLOSED,
 192         QEDE_STATE_OPEN,
 193 };
 194
 195 #define HILO_U64(hi, lo)                ((((u64)(hi)) << 32) + (lo))
 196
 197 #define MAX_NUM_TC      8
 198 #define MAX_NUM_PRI     8
 199
 200 /* The driver supports the new build_skb() API:
 201  * RX ring buffer contains pointer to kmalloc() data only,
 202  * skb are built only after the frame was DMA-ed.
 203  */
 204 struct sw_rx_data {
 205         struct page *data;
 206         dma_addr_t mapping;
 207         unsigned int page_offset;
 208 };
 209
 210 enum qede_agg_state {
 211         QEDE_AGG_STATE_NONE  = 0,
 212         QEDE_AGG_STATE_START = 1,
 213         QEDE_AGG_STATE_ERROR = 2
 214 };
 215
 216 struct qede_agg_info {
 217         struct sw_rx_data replace_buf;
 218         dma_addr_t replace_buf_mapping;
 219         struct sw_rx_data start_buf;
 220         dma_addr_t start_buf_mapping;
 221         struct eth_fast_path_rx_tpa_start_cqe start_cqe;
 222         enum qede_agg_state agg_state;
 223         struct sk_buff *skb;
 224         int frag_id;
 225         u16 vlan_tag;
 226 };
 227
 228 struct qede_rx_queue {
 229         __le16                  *hw_cons_ptr;
 230         struct sw_rx_data       *sw_rx_ring;
 231         u16                     sw_rx_cons;
 232         u16                     sw_rx_prod;
 233         struct qed_chain        rx_bd_ring;
 234         struct qed_chain        rx_comp_ring;
 235         void __iomem            *hw_rxq_prod_addr;
 236
 237         /* GRO */
 238         struct qede_agg_info    tpa_info[ETH_TPA_MAX_AGGS_NUM];
 239
 240         int                     rx_buf_size;
 241         unsigned int            rx_buf_seg_size;
 242
 243         u16                     num_rx_buffers;
 244         u16                     rxq_id;
 245
 246         u64                     rcv_pkts;
 247         u64                     rx_hw_errors;
 248         u64                     rx_alloc_errors;
 249         u64                     rx_ip_frags;
 250 };
 251
 252 union db_prod {
 253         struct eth_db_data data;
 254         u32             raw;
 255 };
 256
 257 struct sw_tx_bd {
 258         struct sk_buff *skb;
 259         u8 flags;
 260 /* Set on the first BD descriptor when there is a split BD */
 261 #define QEDE_TSO_SPLIT_BD               BIT(0)
 262 };
 263
 264 struct qede_tx_queue {
 265         int                     index; /* Queue index */
 266         __le16                  *hw_cons_ptr;
 267         struct sw_tx_bd         *sw_tx_ring;
 268         u16                     sw_tx_cons;
 269         u16                     sw_tx_prod;
 270         struct qed_chain        tx_pbl;
 271         void __iomem            *doorbell_addr;
 272         union db_prod           tx_db;
 273
 274         u16                     num_tx_buffers;
 275         u64                     xmit_pkts;
 276         u64                     stopped_cnt;
 277
 278         bool                    is_legacy;
 279 };
 280
 281 #define BD_UNMAP_ADDR(bd)               HILO_U64(le32_to_cpu((bd)->addr.hi), \
 282                                                  le32_to_cpu((bd)->addr.lo))
 283 #define BD_SET_UNMAP_ADDR_LEN(bd, maddr, len)                           \
 284         do {                                                            \
 285                 (bd)->addr.hi = cpu_to_le32(upper_32_bits(maddr));      \
 286                 (bd)->addr.lo = cpu_to_le32(lower_32_bits(maddr));      \
 287                 (bd)->nbytes = cpu_to_le16(len);                        \
 288         } while (0)
 289 #define BD_UNMAP_LEN(bd)                (le16_to_cpu((bd)->nbytes))
 290
 291 struct qede_fastpath {
 292         struct qede_dev *edev;
 293 #define QEDE_FASTPATH_TX        BIT(0)
 294 #define QEDE_FASTPATH_RX        BIT(1)
 295 #define QEDE_FASTPATH_COMBINED  (QEDE_FASTPATH_TX | QEDE_FASTPATH_RX)
 296         u8                      type;
 297         u8                      id;
 298         struct napi_struct      napi;
 299         struct qed_sb_info      *sb_info;
 300         struct qede_rx_queue    *rxq;
 301         struct qede_tx_queue    *txqs;
 302
 303 #define VEC_NAME_SIZE   (sizeof(((struct net_device *)0)->name) + 8)
 304         char    name[VEC_NAME_SIZE];
 305 };
 306
 307 /* Debug print definitions */
 308 #define DP_NAME(edev) ((edev)->ndev->name)
 309
 310 #define XMIT_PLAIN              0
 311 #define XMIT_L4_CSUM            BIT(0)
 312 #define XMIT_LSO                BIT(1)
 313 #define XMIT_ENC                BIT(2)
 314
 315 #define QEDE_CSUM_ERROR                 BIT(0)
 316 #define QEDE_CSUM_UNNECESSARY           BIT(1)
 317 #define QEDE_TUNN_CSUM_UNNECESSARY      BIT(2)
 318
 319 #define QEDE_SP_RX_MODE                 1
 320 #define QEDE_SP_VXLAN_PORT_CONFIG       2
 321 #define QEDE_SP_GENEVE_PORT_CONFIG      3
 322
 323 union qede_reload_args {
 324         u16 mtu;
 325 };
 326
 327 #ifdef CONFIG_DCB
 328 void qede_set_dcbnl_ops(struct net_device *ndev);
 329 #endif
 330 void qede_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level);
 331 void qede_set_ethtool_ops(struct net_device *netdev);
 332 void qede_reload(struct qede_dev *edev,
 333                  void (*func)(struct qede_dev *edev,
 334                               union qede_reload_args *args),
 335                  union qede_reload_args *args);
 336 int qede_change_mtu(struct net_device *dev, int new_mtu);
 337 void qede_fill_by_demand_stats(struct qede_dev *edev);
 338 bool qede_has_rx_work(struct qede_rx_queue *rxq);
 339 int qede_txq_has_work(struct qede_tx_queue *txq);
 340 void qede_recycle_rx_bd_ring(struct qede_rx_queue *rxq, struct qede_dev *edev,
 341                              u8 count);
 342
 343 #define RX_RING_SIZE_POW        13
 344 #define RX_RING_SIZE            ((u16)BIT(RX_RING_SIZE_POW))
 345 #define NUM_RX_BDS_MAX          (RX_RING_SIZE - 1)
 346 #define NUM_RX_BDS_MIN          128
 347 #define NUM_RX_BDS_DEF          NUM_RX_BDS_MAX
 348
 349 #define TX_RING_SIZE_POW        13
 350 #define TX_RING_SIZE            ((u16)BIT(TX_RING_SIZE_POW))
 351 #define NUM_TX_BDS_MAX          (TX_RING_SIZE - 1)
 352 #define NUM_TX_BDS_MIN          128
 353 #define NUM_TX_BDS_DEF          NUM_TX_BDS_MAX
 354
 355 #define QEDE_MIN_PKT_LEN        64
 356 #define QEDE_RX_HDR_SIZE        256
 357 #define for_each_queue(i) for (i = 0; i < edev->num_queues; i++)
 358
 359 #endif /* _QEDE_H_ */