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 #define BNXT_MAX_ROCE_MSIX 9 19 #define BNXT_MAX_VF_ROCE_MSIX 2 20 21 struct hwrm_async_event_cmpl; 22 struct bnxt; 23 24 struct bnxt_msix_entry { 25 u32 vector; 26 u32 ring_idx; 27 u32 db_offset; 28 }; 29 30 struct bnxt_ulp_ops { 31 void (*ulp_irq_stop)(void *); 32 void (*ulp_irq_restart)(void *, struct bnxt_msix_entry *); 33 }; 34 35 struct bnxt_fw_msg { 36 void *msg; 37 int msg_len; 38 void *resp; 39 int resp_max_len; 40 int timeout; 41 }; 42 43 struct bnxt_ulp { 44 void *handle; 45 struct bnxt_ulp_ops __rcu *ulp_ops; 46 unsigned long *async_events_bmap; 47 u16 max_async_event_id; 48 u16 msix_requested; 49 atomic_t ref_count; 50 }; 51 52 struct bnxt_en_dev { 53 struct net_device *net; 54 struct pci_dev *pdev; 55 struct bnxt_msix_entry msix_entries[BNXT_MAX_ROCE_MSIX]; 56 u32 flags; 57 #define BNXT_EN_FLAG_ROCEV1_CAP 0x1 58 #define BNXT_EN_FLAG_ROCEV2_CAP 0x2 59 #define BNXT_EN_FLAG_ROCE_CAP (BNXT_EN_FLAG_ROCEV1_CAP | \ 60 BNXT_EN_FLAG_ROCEV2_CAP) 61 #define BNXT_EN_FLAG_MSIX_REQUESTED 0x4 62 #define BNXT_EN_FLAG_ULP_STOPPED 0x8 63 #define BNXT_EN_FLAG_VF 0x10 64 #define BNXT_EN_VF(edev) ((edev)->flags & BNXT_EN_FLAG_VF) 65 66 struct bnxt_ulp *ulp_tbl; 67 int l2_db_size; /* Doorbell BAR size in 68 * bytes mapped by L2 69 * driver. 70 */ 71 int l2_db_size_nc; /* Doorbell BAR size in 72 * bytes mapped as non- 73 * cacheable. 74 */ 75 int l2_db_offset; /* Doorbell offset in 76 * bytes within 77 * l2_db_size_nc. 78 */ 79 u16 chip_num; 80 u16 hw_ring_stats_size; 81 u16 pf_port_id; 82 unsigned long en_state; /* Could be checked in 83 * RoCE driver suspend 84 * mode only. Will be 85 * updated in resume. 86 */ 87 void __iomem *bar0; 88 89 u16 ulp_num_msix_vec; 90 u16 ulp_num_ctxs; 91 92 /* serialize ulp operations */ 93 struct mutex en_dev_lock; 94 }; 95 96 static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev) 97 { 98 if (edev && rcu_access_pointer(edev->ulp_tbl->ulp_ops)) 99 return true; 100 return false; 101 } 102 103 int bnxt_get_ulp_msix_num(struct bnxt *bp); 104 int bnxt_get_ulp_msix_num_in_use(struct bnxt *bp); 105 void bnxt_set_ulp_msix_num(struct bnxt *bp, int num); 106 int bnxt_get_ulp_stat_ctxs(struct bnxt *bp); 107 void bnxt_set_ulp_stat_ctxs(struct bnxt *bp, int num_ctxs); 108 int bnxt_get_ulp_stat_ctxs_in_use(struct bnxt *bp); 109 void bnxt_set_dflt_ulp_stat_ctxs(struct bnxt *bp); 110 void bnxt_ulp_stop(struct bnxt *bp); 111 void bnxt_ulp_start(struct bnxt *bp, int err); 112 void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs); 113 void bnxt_ulp_irq_stop(struct bnxt *bp); 114 void bnxt_ulp_irq_restart(struct bnxt *bp, int err); 115 void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl); 116 void bnxt_rdma_aux_device_uninit(struct bnxt *bp); 117 void bnxt_rdma_aux_device_del(struct bnxt *bp); 118 void bnxt_rdma_aux_device_add(struct bnxt *bp); 119 void bnxt_rdma_aux_device_init(struct bnxt *bp); 120 int bnxt_register_dev(struct bnxt_en_dev *edev, struct bnxt_ulp_ops *ulp_ops, 121 void *handle); 122 void bnxt_unregister_dev(struct bnxt_en_dev *edev); 123 int bnxt_send_msg(struct bnxt_en_dev *edev, struct bnxt_fw_msg *fw_msg); 124 int bnxt_register_async_events(struct bnxt_en_dev *edev, 125 unsigned long *events_bmap, u16 max_id); 126 #endif 127