drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h

   1 /*
   2  * Copyright (c) 2014-2015 Hisilicon Limited.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  */
   9
  10 #ifndef _HNS_DSAF_RCB_H
  11 #define _HNS_DSAF_RCB_H
  12
  13 #include <linux/netdevice.h>
  14 #include <linux/platform_device.h>
  15
  16 #include "hnae.h"
  17 #include "hns_dsaf_main.h"
  18
  19 struct rcb_common_cb;
  20
  21 #define HNS_RCB_IRQ_NUM_PER_QUEUE               2
  22 #define HNS_RCB_IRQ_IDX_TX                      0
  23 #define HNS_RCB_IRQ_IDX_RX                      1
  24 #define HNS_RCB_TX_REG_OFFSET                   0x40
  25
  26 #define HNS_RCB_SERVICE_NW_ENGINE_NUM           DSAF_COMM_CHN
  27 #define HNS_RCB_DEBUG_NW_ENGINE_NUM             1
  28 #define HNS_RCB_RING_MAX_BD_PER_PKT             3
  29 #define HNS_RCB_RING_MAX_TXBD_PER_PKT           3
  30 #define HNS_RCBV2_RING_MAX_TXBD_PER_PKT         8
  31 #define HNS_RCB_MAX_PKT_SIZE MAC_MAX_MTU
  32
  33 #define HNS_RCB_RING_MAX_PENDING_BD             1024
  34 #define HNS_RCB_RING_MIN_PENDING_BD             16
  35
  36 #define HNS_RCB_REG_OFFSET                      0x10000
  37
  38 #define HNS_RCB_MAX_COALESCED_FRAMES            1023
  39 #define HNS_RCB_MIN_COALESCED_FRAMES            1
  40 #define HNS_RCB_DEF_COALESCED_FRAMES            50
  41 #define HNS_RCB_MAX_TIME_OUT                    0x500
  42
  43 #define HNS_RCB_COMMON_ENDIAN                   1
  44
  45 #define HNS_BD_SIZE_512_TYPE                    0
  46 #define HNS_BD_SIZE_1024_TYPE                   1
  47 #define HNS_BD_SIZE_2048_TYPE                   2
  48 #define HNS_BD_SIZE_4096_TYPE                   3
  49
  50 #define HNS_RCB_COMMON_DUMP_REG_NUM 80
  51 #define HNS_RCB_RING_DUMP_REG_NUM 40
  52 #define HNS_RING_STATIC_REG_NUM 28
  53
  54 #define HNS_DUMP_REG_NUM                        500
  55 #define HNS_STATIC_REG_NUM                      12
  56
  57 #define HNS_TSO_MODE_8BD_32K                    1
  58 #define HNS_TSO_MDOE_4BD_16K                    0
  59
  60 enum rcb_int_flag {
  61         RCB_INT_FLAG_TX = 0x1,
  62         RCB_INT_FLAG_RX = (0x1 << 1),
  63         RCB_INT_FLAG_MAX = (0x1 << 2),  /*must be the last element */
  64 };
  65
  66 struct hns_ring_hw_stats {
  67         u64 tx_pkts;
  68         u64 ppe_tx_ok_pkts;
  69         u64 ppe_tx_drop_pkts;
  70         u64 rx_pkts;
  71         u64 ppe_rx_ok_pkts;
  72         u64 ppe_rx_drop_pkts;
  73 };
  74
  75 struct ring_pair_cb {
  76         struct rcb_common_cb *rcb_common;       /*  ring belongs to */
  77         struct device *dev;     /*device for DMA mapping */
  78         struct hnae_queue q;
  79
  80         u16 index;      /* global index in a rcb common device */
  81         u16 buf_size;
  82
  83         int virq[HNS_RCB_IRQ_NUM_PER_QUEUE];
  84
  85         u8 port_id_in_dsa;
  86         u8 used_by_vf;
  87
  88         struct hns_ring_hw_stats hw_stats;
  89 };
  90
  91 struct rcb_common_cb {
  92         u8 __iomem *io_base;
  93         phys_addr_t phy_base;
  94         struct dsaf_device *dsaf_dev;
  95         u16 max_vfn;
  96         u16 max_q_per_vf;
  97
  98         u8 comm_index;
  99         u32 ring_num;
 100         u32 coalesced_frames; /* frames  threshold of  rx interrupt   */
 101         u32 timeout; /* time threshold of  rx interrupt  */
 102         u32 desc_num; /*  desc num per queue*/
 103
 104         struct ring_pair_cb ring_pair_cb[0];
 105 };
 106
 107 int hns_rcb_buf_size2type(u32 buf_size);
 108
 109 int hns_rcb_common_get_cfg(struct dsaf_device *dsaf_dev, int comm_index);
 110 void hns_rcb_common_free_cfg(struct dsaf_device *dsaf_dev, u32 comm_index);
 111 int hns_rcb_common_init_hw(struct rcb_common_cb *rcb_common);
 112 void hns_rcb_start(struct hnae_queue *q, u32 val);
 113 void hns_rcb_get_cfg(struct rcb_common_cb *rcb_common);
 114 void hns_rcb_get_queue_mode(enum dsaf_mode dsaf_mode, int comm_index,
 115                             u16 *max_vfn, u16 *max_q_per_vf);
 116
 117 void hns_rcb_common_init_commit_hw(struct rcb_common_cb *rcb_common);
 118
 119 void hns_rcb_ring_enable_hw(struct hnae_queue *q, u32 val);
 120 void hns_rcb_int_clr_hw(struct hnae_queue *q, u32 flag);
 121 void hns_rcb_int_ctrl_hw(struct hnae_queue *q, u32 flag, u32 enable);
 122 void hns_rcbv2_int_ctrl_hw(struct hnae_queue *q, u32 flag, u32 mask);
 123 void hns_rcbv2_int_clr_hw(struct hnae_queue *q, u32 flag);
 124
 125 void hns_rcb_init_hw(struct ring_pair_cb *ring);
 126 void hns_rcb_reset_ring_hw(struct hnae_queue *q);
 127 void hns_rcb_wait_fbd_clean(struct hnae_queue **qs, int q_num, u32 flag);
 128
 129 u32 hns_rcb_get_coalesced_frames(struct dsaf_device *dsaf_dev, int comm_index);
 130 u32 hns_rcb_get_coalesce_usecs(struct dsaf_device *dsaf_dev, int comm_index);
 131 void hns_rcb_set_coalesce_usecs(struct dsaf_device *dsaf_dev,
 132                                 int comm_index, u32 timeout);
 133 int hns_rcb_set_coalesced_frames(struct dsaf_device *dsaf_dev,
 134                                  int comm_index, u32 coalesce_frames);
 135 void hns_rcb_update_stats(struct hnae_queue *queue);
 136
 137 void hns_rcb_get_stats(struct hnae_queue *queue, u64 *data);
 138
 139 void hns_rcb_get_common_regs(struct rcb_common_cb *rcb_common, void *data);
 140
 141 int hns_rcb_get_ring_sset_count(int stringset);
 142 int hns_rcb_get_common_regs_count(void);
 143 int hns_rcb_get_ring_regs_count(void);
 144
 145 void hns_rcb_get_ring_regs(struct hnae_queue *queue, void *data);
 146
 147 void hns_rcb_get_strings(int stringset, u8 *data, int index);
 148 #endif /* _HNS_DSAF_RCB_H */