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_OTHER_ULP 1 15 #define BNXT_MAX_ULP 2 16 17 #define BNXT_MIN_ROCE_CP_RINGS 2 18 #define BNXT_MIN_ROCE_STAT_CTXS 1 19 20 struct hwrm_async_event_cmpl; 21 struct bnxt; 22 23 struct bnxt_msix_entry { 24 u32 vector; 25 u32 ring_idx; 26 u32 db_offset; 27 }; 28 29 struct bnxt_ulp_ops { 30 /* async_notifier() cannot sleep (in BH context) */ 31 void (*ulp_async_notifier)(void *, struct hwrm_async_event_cmpl *); 32 void (*ulp_stop)(void *); 33 void (*ulp_start)(void *); 34 void (*ulp_sriov_config)(void *, int); 35 void (*ulp_shutdown)(void *); 36 void (*ulp_irq_stop)(void *); 37 void (*ulp_irq_restart)(void *, struct bnxt_msix_entry *); 38 }; 39 40 struct bnxt_fw_msg { 41 void *msg; 42 int msg_len; 43 void *resp; 44 int resp_max_len; 45 int timeout; 46 }; 47 48 struct bnxt_ulp { 49 void *handle; 50 struct bnxt_ulp_ops __rcu *ulp_ops; 51 unsigned long *async_events_bmap; 52 u16 max_async_event_id; 53 u16 msix_requested; 54 u16 msix_base; 55 atomic_t ref_count; 56 }; 57 58 struct bnxt_en_dev { 59 struct net_device *net; 60 struct pci_dev *pdev; 61 u32 flags; 62 #define BNXT_EN_FLAG_ROCEV1_CAP 0x1 63 #define BNXT_EN_FLAG_ROCEV2_CAP 0x2 64 #define BNXT_EN_FLAG_ROCE_CAP (BNXT_EN_FLAG_ROCEV1_CAP | \ 65 BNXT_EN_FLAG_ROCEV2_CAP) 66 #define BNXT_EN_FLAG_MSIX_REQUESTED 0x4 67 #define BNXT_EN_FLAG_ULP_STOPPED 0x8 68 const struct bnxt_en_ops *en_ops; 69 struct bnxt_ulp ulp_tbl[BNXT_MAX_ULP]; 70 }; 71 72 struct bnxt_en_ops { 73 int (*bnxt_register_device)(struct bnxt_en_dev *, int, 74 struct bnxt_ulp_ops *, void *); 75 int (*bnxt_unregister_device)(struct bnxt_en_dev *, int); 76 int (*bnxt_request_msix)(struct bnxt_en_dev *, int, 77 struct bnxt_msix_entry *, int); 78 int (*bnxt_free_msix)(struct bnxt_en_dev *, int); 79 int (*bnxt_send_fw_msg)(struct bnxt_en_dev *, int, 80 struct bnxt_fw_msg *); 81 int (*bnxt_register_fw_async_events)(struct bnxt_en_dev *, int, 82 unsigned long *, u16); 83 }; 84 85 static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev, int ulp_id) 86 { 87 if (edev && rcu_access_pointer(edev->ulp_tbl[ulp_id].ulp_ops)) 88 return true; 89 return false; 90 } 91 92 int bnxt_get_ulp_msix_num(struct bnxt *bp); 93 int bnxt_get_ulp_msix_base(struct bnxt *bp); 94 int bnxt_get_ulp_stat_ctxs(struct bnxt *bp); 95 void bnxt_ulp_stop(struct bnxt *bp); 96 void bnxt_ulp_start(struct bnxt *bp, int err); 97 void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs); 98 void bnxt_ulp_shutdown(struct bnxt *bp); 99 void bnxt_ulp_irq_stop(struct bnxt *bp); 100 void bnxt_ulp_irq_restart(struct bnxt *bp, int err); 101 void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl); 102 struct bnxt_en_dev *bnxt_ulp_probe(struct net_device *dev); 103 104 #endif 105