1 /* Broadcom NetXtreme-C/E network driver. 2 * 3 * Copyright (c) 2016-2018 Broadcom Limited 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation. 8 */ 9 10 #ifndef BNXT_ULP_H 11 #define BNXT_ULP_H 12 13 #define BNXT_ROCE_ULP 0 14 #define BNXT_MAX_ULP 1 15 16 #define BNXT_MIN_ROCE_CP_RINGS 2 17 #define BNXT_MIN_ROCE_STAT_CTXS 1 18 19 #define BNXT_MAX_ROCE_MSIX_VF 2 20 #define BNXT_MAX_ROCE_MSIX_NPAR_PF 5 21 #define BNXT_MAX_ROCE_MSIX 64 22 23 struct hwrm_async_event_cmpl; 24 struct bnxt; 25 26 struct bnxt_msix_entry { 27 u32 vector; 28 u32 ring_idx; 29 u32 db_offset; 30 }; 31 32 struct bnxt_ulp_ops { 33 /* async_notifier() cannot sleep (in BH context) */ 34 void (*ulp_async_notifier)(void *, struct hwrm_async_event_cmpl *); 35 void (*ulp_irq_stop)(void *, bool); 36 void (*ulp_irq_restart)(void *, struct bnxt_msix_entry *); 37 }; 38 39 struct bnxt_fw_msg { 40 void *msg; 41 int msg_len; 42 void *resp; 43 int resp_max_len; 44 int timeout; 45 }; 46 47 struct bnxt_ulp { 48 void *handle; 49 struct bnxt_ulp_ops __rcu *ulp_ops; 50 unsigned long *async_events_bmap; 51 u16 max_async_event_id; 52 u16 msix_requested; 53 atomic_t ref_count; 54 }; 55 56 struct bnxt_en_dev { 57 struct net_device *net; 58 struct pci_dev *pdev; 59 struct bnxt_msix_entry msix_entries[BNXT_MAX_ROCE_MSIX]; 60 u32 flags; 61 #define BNXT_EN_FLAG_ROCEV1_CAP 0x1 62 #define BNXT_EN_FLAG_ROCEV2_CAP 0x2 63 #define BNXT_EN_FLAG_ROCE_CAP (BNXT_EN_FLAG_ROCEV1_CAP | \ 64 BNXT_EN_FLAG_ROCEV2_CAP) 65 #define BNXT_EN_FLAG_MSIX_REQUESTED 0x4 66 #define BNXT_EN_FLAG_ULP_STOPPED 0x8 67 #define BNXT_EN_FLAG_VF 0x10 68 #define BNXT_EN_VF(edev) ((edev)->flags & BNXT_EN_FLAG_VF) 69 #define BNXT_EN_FLAG_ROCE_VF_RES_MGMT 0x20 70 #define BNXT_EN_FLAG_SW_RES_LMT 0x40 71 #define BNXT_EN_SW_RES_LMT(edev) ((edev)->flags & BNXT_EN_FLAG_SW_RES_LMT) 72 73 struct bnxt_ulp *ulp_tbl; 74 int l2_db_size; /* Doorbell BAR size in 75 * bytes mapped by L2 76 * driver. 77 */ 78 int l2_db_size_nc; /* Doorbell BAR size in 79 * bytes mapped as non- 80 * cacheable. 81 */ 82 int l2_db_offset; /* Doorbell offset in 83 * bytes within 84 * l2_db_size_nc. 85 */ 86 u16 chip_num; 87 u16 hw_ring_stats_size; 88 u16 pf_port_id; 89 unsigned long en_state; /* Could be checked in 90 * RoCE driver suspend 91 * mode only. Will be 92 * updated in resume. 93 */ 94 void __iomem *bar0; 95 96 u16 ulp_num_msix_vec; 97 u16 ulp_num_ctxs; 98 99 /* serialize ulp operations */ 100 struct mutex en_dev_lock; 101 }; 102 103 static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev) 104 { 105 if (edev && rcu_access_pointer(edev->ulp_tbl->ulp_ops)) 106 return true; 107 return false; 108 } 109 110 int bnxt_get_ulp_msix_num(struct bnxt *bp); 111 int bnxt_get_ulp_msix_num_in_use(struct bnxt *bp); 112 void bnxt_set_ulp_msix_num(struct bnxt *bp, int num); 113 int bnxt_get_ulp_stat_ctxs(struct bnxt *bp); 114 void bnxt_set_ulp_stat_ctxs(struct bnxt *bp, int num_ctxs); 115 int bnxt_get_ulp_stat_ctxs_in_use(struct bnxt *bp); 116 void bnxt_set_dflt_ulp_stat_ctxs(struct bnxt *bp); 117 void bnxt_ulp_stop(struct bnxt *bp); 118 void bnxt_ulp_start(struct bnxt *bp, int err); 119 void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs); 120 void bnxt_ulp_irq_stop(struct bnxt *bp); 121 void bnxt_ulp_irq_restart(struct bnxt *bp, int err); 122 void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl); 123 void bnxt_rdma_aux_device_uninit(struct bnxt *bp); 124 void bnxt_rdma_aux_device_del(struct bnxt *bp); 125 void bnxt_rdma_aux_device_add(struct bnxt *bp); 126 void bnxt_rdma_aux_device_init(struct bnxt *bp); 127 int bnxt_register_dev(struct bnxt_en_dev *edev, struct bnxt_ulp_ops *ulp_ops, 128 void *handle); 129 void bnxt_unregister_dev(struct bnxt_en_dev *edev); 130 int bnxt_send_msg(struct bnxt_en_dev *edev, struct bnxt_fw_msg *fw_msg); 131 void bnxt_register_async_events(struct bnxt_en_dev *edev, 132 unsigned long *events_bmap, u16 max_id); 133 #endif 134