1 /*- 2 * Broadcom NetXtreme-C/E network driver. 3 * 4 * Copyright (c) 2024 Broadcom, All Rights Reserved. 5 * The term Broadcom refers to Broadcom Limited and/or its subsidiaries 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS' 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 26 * THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef BNXT_ULP_H 30 #define BNXT_ULP_H 31 32 #include <linux/rcupdate.h> 33 #include "bnxt.h" 34 35 #define BNXT_ROCE_ULP 0 36 #define BNXT_OTHER_ULP 1 37 #define BNXT_MAX_ULP 2 38 39 #define BNXT_MIN_ROCE_CP_RINGS 2 40 #define BNXT_MIN_ROCE_STAT_CTXS 1 41 42 struct hwrm_async_event_cmpl; 43 struct bnxt_softc; 44 struct bnxt_bar_info; 45 46 struct bnxt_msix_entry { 47 uint32_t vector; 48 uint32_t ring_idx; 49 uint32_t db_offset; 50 }; 51 52 struct bnxt_ulp_ops { 53 void (*ulp_async_notifier)(void *, struct hwrm_async_event_cmpl *); 54 void (*ulp_stop)(void *); 55 void (*ulp_start)(void *); 56 void (*ulp_sriov_config)(void *, int); 57 void (*ulp_shutdown)(void *); 58 void (*ulp_irq_stop)(void *); 59 void (*ulp_irq_restart)(void *, struct bnxt_msix_entry *); 60 }; 61 62 struct bnxt_fw_msg { 63 void *msg; 64 int msg_len; 65 void *resp; 66 int resp_max_len; 67 int timeout; 68 }; 69 70 struct bnxt_ulp { 71 void *handle; 72 struct bnxt_ulp_ops __rcu *ulp_ops; 73 unsigned long *async_events_bmap; 74 u16 max_async_event_id; 75 u16 msix_requested; 76 u16 msix_base; 77 atomic_t ref_count; 78 }; 79 80 struct bnxt_en_dev { 81 struct ifnet *net; 82 struct pci_dev *pdev; 83 struct bnxt_softc *softc; 84 u32 flags; 85 #define BNXT_EN_FLAG_ROCEV1_CAP 0x1 86 #define BNXT_EN_FLAG_ROCEV2_CAP 0x2 87 #define BNXT_EN_FLAG_ROCE_CAP (BNXT_EN_FLAG_ROCEV1_CAP | \ 88 BNXT_EN_FLAG_ROCEV2_CAP) 89 #define BNXT_EN_FLAG_MSIX_REQUESTED 0x4 90 #define BNXT_EN_FLAG_ULP_STOPPED 0x8 91 #define BNXT_EN_FLAG_ASYM_Q 0x10 92 #define BNXT_EN_FLAG_MULTI_HOST 0x20 93 #define BNXT_EN_FLAG_SW_RES_LMT 0x400 94 #define BNXT_EN_ASYM_Q(edev) ((edev)->flags & BNXT_EN_FLAG_ASYM_Q) 95 #define BNXT_EN_MH(edev) ((edev)->flags & BNXT_EN_FLAG_MULTI_HOST) 96 #define BNXT_EN_SW_RES_LMT(edev) ((edev)->flags & BNXT_EN_FLAG_SW_RES_LMT) 97 const struct bnxt_en_ops *en_ops; 98 struct bnxt_ulp ulp_tbl[BNXT_MAX_ULP]; 99 int l2_db_offset; /* Doorbell BAR offset 100 * of non-cacheable. 101 */ 102 int l2_db_size; /* Doorbell BAR size in 103 * bytes mapped by L2 104 * driver. 105 */ 106 int l2_db_size_nc; /* Doorbell BAR size in 107 * bytes mapped as non- 108 * cacheable. 109 */ 110 u32 ulp_version; /* bnxt_re checks the 111 * ulp_version is correct 112 * to ensure compatibility 113 * with bnxt_en. 114 */ 115 #define BNXT_ULP_VERSION 0x695a0008 /* Change this when any interface 116 * structure or API changes 117 * between bnxt_en and bnxt_re. 118 */ 119 unsigned long en_state; 120 void __iomem *bar0; 121 u16 hw_ring_stats_size; 122 u16 pf_port_id; 123 u8 port_partition_type; 124 #define BNXT_EN_NPAR(edev) ((edev)->port_partition_type) 125 u8 port_count; 126 struct bnxt_dbr *en_dbr; 127 struct bnxt_bar_info hwrm_bar; 128 u32 espeed; 129 uint8_t lanes; 130 #define BNXT_VPD_PN_FLD_LEN 32 131 char board_part_number[BNXT_VPD_PN_FLD_LEN]; 132 }; 133 134 struct bnxt_en_ops { 135 int (*bnxt_register_device)(struct bnxt_en_dev *, int, 136 struct bnxt_ulp_ops *, void *); 137 int (*bnxt_unregister_device)(struct bnxt_en_dev *, int); 138 int (*bnxt_request_msix)(struct bnxt_en_dev *, int, 139 struct bnxt_msix_entry *, int); 140 int (*bnxt_free_msix)(struct bnxt_en_dev *, int); 141 int (*bnxt_send_fw_msg)(struct bnxt_en_dev *, int, 142 struct bnxt_fw_msg *); 143 int (*bnxt_register_fw_async_events)(struct bnxt_en_dev *, int, 144 unsigned long *, u16); 145 int (*bnxt_dbr_complete)(struct bnxt_en_dev *, int, u32); 146 }; 147 148 static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev, int ulp_id) 149 { 150 if (edev && rcu_access_pointer(edev->ulp_tbl[ulp_id].ulp_ops)) 151 return true; 152 return false; 153 } 154 155 int bnxt_get_ulp_msix_num(struct bnxt_softc *bp); 156 int bnxt_get_ulp_msix_base(struct bnxt_softc *bp); 157 int bnxt_get_ulp_stat_ctxs(struct bnxt_softc *bp); 158 void bnxt_ulp_stop(struct bnxt_softc *bp); 159 void bnxt_ulp_start(struct bnxt_softc *bp, int err); 160 void bnxt_ulp_sriov_cfg(struct bnxt_softc *bp, int num_vfs); 161 void bnxt_ulp_shutdown(struct bnxt_softc *bp); 162 void bnxt_ulp_irq_stop(struct bnxt_softc *bp); 163 void bnxt_ulp_irq_restart(struct bnxt_softc *bp, int err); 164 void bnxt_ulp_async_events(struct bnxt_softc *bp, struct hwrm_async_event_cmpl *cmpl); 165 struct bnxt_en_dev *bnxt_ulp_probe(struct net_device *dev); 166 void bnxt_aux_dev_release(struct device *dev); 167 int bnxt_rdma_aux_device_add(struct bnxt_softc *bp); 168 int bnxt_rdma_aux_device_del(struct bnxt_softc *bp); 169 #endif 170