LXR linux/drivers/net/ethernet/qlogic/qed/qed

   1/* QLogic qed NIC Driver
   2 * Copyright (c) 2015-2017  QLogic Corporation
   3 *
   4 * This software is available to you under a choice of one of two
   5 * licenses.  You may choose to be licensed under the terms of the GNU
   6 * General Public License (GPL) Version 2, available from the file
   7 * COPYING in the main directory of this source tree, or the
   8 * OpenIB.org BSD license below:
   9 *
  10 *     Redistribution and use in source and binary forms, with or
  11 *     without modification, are permitted provided that the following
  12 *     conditions are met:
  13 *
  14 *      - Redistributions of source code must retain the above
  15 *        copyright notice, this list of conditions and the following
  16 *        disclaimer.
  17 *
  18 *      - Redistributions in binary form must reproduce the above
  19 *        copyright notice, this list of conditions and the following
  20 *        disclaimer in the documentation and /or other materials
  21 *        provided with the distribution.
  22 *
  23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30 * SOFTWARE.
  31 */
  32#ifndef _QED_RDMA_H
  33#define _QED_RDMA_H
  34#include <linux/types.h>
  35#include <linux/bitops.h>
  36#include <linux/kernel.h>
  37#include <linux/list.h>
  38#include <linux/slab.h>
  39#include <linux/spinlock.h>
  40#include <linux/qed/qed_if.h>
  41#include <linux/qed/qed_rdma_if.h>
  42#include "qed.h"
  43#include "qed_dev_api.h"
  44#include "qed_hsi.h"
  45#include "qed_iwarp.h"
  46#include "qed_roce.h"
  47
  48#define QED_RDMA_MAX_FMR                    (RDMA_MAX_TIDS)
  49#define QED_RDMA_MAX_P_KEY                  (1)
  50#define QED_RDMA_MAX_WQE                    (0x7FFF)
  51#define QED_RDMA_MAX_SRQ_WQE_ELEM           (0x7FFF)
  52#define QED_RDMA_PAGE_SIZE_CAPS             (0xFFFFF000)
  53#define QED_RDMA_ACK_DELAY                  (15)
  54#define QED_RDMA_MAX_MR_SIZE                (0x10000000000ULL)
  55#define QED_RDMA_MAX_CQS                    (RDMA_MAX_CQS)
  56#define QED_RDMA_MAX_MRS                    (RDMA_MAX_TIDS)
  57/* Add 1 for header element */
  58#define QED_RDMA_MAX_SRQ_ELEM_PER_WQE       (RDMA_MAX_SGE_PER_RQ_WQE + 1)
  59#define QED_RDMA_MAX_SGE_PER_SRQ_WQE        (RDMA_MAX_SGE_PER_RQ_WQE)
  60#define QED_RDMA_SRQ_WQE_ELEM_SIZE          (16)
  61#define QED_RDMA_MAX_SRQS                   (32 * 1024)
  62
  63#define QED_RDMA_MAX_CQE_32_BIT             (0x7FFFFFFF - 1)
  64#define QED_RDMA_MAX_CQE_16_BIT             (0x7FFF - 1)
  65
  66enum qed_rdma_toggle_bit {
  67        QED_RDMA_TOGGLE_BIT_CLEAR = 0,
  68        QED_RDMA_TOGGLE_BIT_SET = 1
  69};
  70
  71#define QED_RDMA_MAX_BMAP_NAME  (10)
  72struct qed_bmap {
  73        unsigned long *bitmap;
  74        u32 max_count;
  75        char name[QED_RDMA_MAX_BMAP_NAME];
  76};
  77
  78struct qed_rdma_info {
  79        /* spin lock to protect bitmaps */
  80        spinlock_t lock;
  81
  82        struct qed_bmap cq_map;
  83        struct qed_bmap pd_map;
  84        struct qed_bmap tid_map;
  85        struct qed_bmap qp_map;
  86        struct qed_bmap srq_map;
  87        struct qed_bmap cid_map;
  88        struct qed_bmap tcp_cid_map;
  89        struct qed_bmap real_cid_map;
  90        struct qed_bmap dpi_map;
  91        struct qed_bmap toggle_bits;
  92        struct qed_rdma_events events;
  93        struct qed_rdma_device *dev;
  94        struct qed_rdma_port *port;
  95        u32 last_tid;
  96        u8 num_cnqs;
  97        u32 num_qps;
  98        u32 num_mrs;
  99        u32 num_srqs;
 100        u16 srq_id_offset;
 101        u16 queue_zone_base;
 102        u16 max_queue_zones;
 103        enum protocol_type proto;
 104        struct qed_iwarp_info iwarp;
 105        u8 active:1;
 106};
 107
 108struct qed_rdma_qp {
 109        struct regpair qp_handle;
 110        struct regpair qp_handle_async;
 111        u32 qpid;
 112        u16 icid;
 113        enum qed_roce_qp_state cur_state;
 114        enum qed_iwarp_qp_state iwarp_state;
 115        bool use_srq;
 116        bool signal_all;
 117        bool fmr_and_reserved_lkey;
 118
 119        bool incoming_rdma_read_en;
 120        bool incoming_rdma_write_en;
 121        bool incoming_atomic_en;
 122        bool e2e_flow_control_en;
 123
 124        u16 pd;
 125        u16 pkey;
 126        u32 dest_qp;
 127        u16 mtu;
 128        u16 srq_id;
 129        u8 traffic_class_tos;
 130        u8 hop_limit_ttl;
 131        u16 dpi;
 132        u32 flow_label;
 133        bool lb_indication;
 134        u16 vlan_id;
 135        u32 ack_timeout;
 136        u8 retry_cnt;
 137        u8 rnr_retry_cnt;
 138        u8 min_rnr_nak_timer;
 139        bool sqd_async;
 140        union qed_gid sgid;
 141        union qed_gid dgid;
 142        enum roce_mode roce_mode;
 143        u16 udp_src_port;
 144        u8 stats_queue;
 145
 146        /* requeseter */
 147        u8 max_rd_atomic_req;
 148        u32 sq_psn;
 149        u16 sq_cq_id;
 150        u16 sq_num_pages;
 151        dma_addr_t sq_pbl_ptr;
 152        void *orq;
 153        dma_addr_t orq_phys_addr;
 154        u8 orq_num_pages;
 155        bool req_offloaded;
 156
 157        /* responder */
 158        u8 max_rd_atomic_resp;
 159        u32 rq_psn;
 160        u16 rq_cq_id;
 161        u16 rq_num_pages;
 162        dma_addr_t rq_pbl_ptr;
 163        void *irq;
 164        dma_addr_t irq_phys_addr;
 165        u8 irq_num_pages;
 166        bool resp_offloaded;
 167        u32 cq_prod;
 168
 169        u8 remote_mac_addr[6];
 170        u8 local_mac_addr[6];
 171
 172        void *shared_queue;
 173        dma_addr_t shared_queue_phys_addr;
 174        struct qed_iwarp_ep *ep;
 175};
 176
 177#if IS_ENABLED(CONFIG_QED_RDMA)
 178void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
 179void qed_rdma_dpm_conf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
 180int qed_rdma_info_alloc(struct qed_hwfn *p_hwfn);
 181void qed_rdma_info_free(struct qed_hwfn *p_hwfn);
 182#else
 183static inline void qed_rdma_dpm_conf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) {}
 184static inline void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn,
 185                                    struct qed_ptt *p_ptt) {}
 186static inline int qed_rdma_info_alloc(struct qed_hwfn *p_hwfn) {return -EINVAL;}
 187static inline void qed_rdma_info_free(struct qed_hwfn *p_hwfn) {}
 188#endif
 189
 190int
 191qed_rdma_bmap_alloc(struct qed_hwfn *p_hwfn,
 192                    struct qed_bmap *bmap, u32 max_count, char *name);
 193
 194void
 195qed_rdma_bmap_free(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap, bool check);
 196
 197int
 198qed_rdma_bmap_alloc_id(struct qed_hwfn *p_hwfn,
 199                       struct qed_bmap *bmap, u32 *id_num);
 200
 201void
 202qed_bmap_set_id(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap, u32 id_num);
 203
 204void
 205qed_bmap_release_id(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap, u32 id_num);
 206
 207int
 208qed_bmap_test_id(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap, u32 id_num);
 209
 210void qed_rdma_set_fw_mac(u16 *p_fw_mac, u8 *p_qed_mac);
 211
 212bool qed_rdma_allocated_qps(struct qed_hwfn *p_hwfn);
 213#endif
 214