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 struct hwrm_async_event_cmpl; 20 struct bnxt; 21 22 struct bnxt_msix_entry { 23 u32 vector; 24 u32 ring_idx; 25 u32 db_offset; 26 }; 27 28 struct bnxt_ulp_ops { 29 /* async_notifier() cannot sleep (in BH context) */ 30 void (*ulp_async_notifier)(void *, struct hwrm_async_event_cmpl *); 31 void (*ulp_stop)(void *); 32 void (*ulp_start)(void *); 33 void (*ulp_sriov_config)(void *, int); 34 void (*ulp_shutdown)(void *); 35 void (*ulp_irq_stop)(void *); 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 u16 msix_base; 54 atomic_t ref_count; 55 }; 56 57 struct bnxt_en_dev { 58 struct net_device *net; 59 struct pci_dev *pdev; 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 const struct bnxt_en_ops *en_ops; 68 struct bnxt_ulp ulp_tbl[BNXT_MAX_ULP]; 69 int l2_db_size; /* Doorbell BAR size in 70 * bytes mapped by L2 71 * driver. 72 */ 73 int l2_db_size_nc; /* Doorbell BAR size in 74 * bytes mapped as non- 75 * cacheable. 76 */ 77 }; 78 79 struct bnxt_en_ops { 80 int (*bnxt_register_device)(struct bnxt_en_dev *, unsigned int, 81 struct bnxt_ulp_ops *, void *); 82 int (*bnxt_unregister_device)(struct bnxt_en_dev *, unsigned int); 83 int (*bnxt_request_msix)(struct bnxt_en_dev *, unsigned int, 84 struct bnxt_msix_entry *, int); 85 int (*bnxt_free_msix)(struct bnxt_en_dev *, unsigned int); 86 int (*bnxt_send_fw_msg)(struct bnxt_en_dev *, unsigned int, 87 struct bnxt_fw_msg *); 88 int (*bnxt_register_fw_async_events)(struct bnxt_en_dev *, unsigned int, 89 unsigned long *, u16); 90 }; 91 92 static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev, int ulp_id) 93 { 94 if (edev && rcu_access_pointer(edev->ulp_tbl[ulp_id].ulp_ops)) 95 return true; 96 return false; 97 } 98 99 int bnxt_get_ulp_msix_num(struct bnxt *bp); 100 int bnxt_get_ulp_msix_base(struct bnxt *bp); 101 int bnxt_get_ulp_stat_ctxs(struct bnxt *bp); 102 void bnxt_ulp_stop(struct bnxt *bp); 103 void bnxt_ulp_start(struct bnxt *bp, int err); 104 void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs); 105 void bnxt_ulp_shutdown(struct bnxt *bp); 106 void bnxt_ulp_irq_stop(struct bnxt *bp); 107 void bnxt_ulp_irq_restart(struct bnxt *bp, int err); 108 void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl); 109 struct bnxt_en_dev *bnxt_ulp_probe(struct net_device *dev); 110 111 #endif 112