bnxt_ulp.h

  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_MIN_ROCE_CP_RINGS	2
 14#define BNXT_MIN_ROCE_STAT_CTXS	1
 15
 16#define BNXT_MAX_ROCE_MSIX_VF		2
 17#define BNXT_MAX_ROCE_MSIX_NPAR_PF	5
 18#define BNXT_MAX_ROCE_MSIX		64
 19
 20struct hwrm_async_event_cmpl;
 21struct bnxt;
 22
 23struct bnxt_msix_entry {
 24	u32	vector;
 25	u32	ring_idx;
 26	u32	db_offset;
 27};
 28
 29struct 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_irq_stop)(void *, bool);
 33	void (*ulp_irq_restart)(void *, struct bnxt_msix_entry *);
 34};
 35
 36struct bnxt_fw_msg {
 37	void	*msg;
 38	int	msg_len;
 39	void	*resp;
 40	int	resp_max_len;
 41	int	timeout;
 42};
 43
 44struct bnxt_ulp {
 45	void		*handle;
 46	struct bnxt_ulp_ops __rcu *ulp_ops;
 47	unsigned long	*async_events_bmap;
 48	u16		max_async_event_id;
 49	u16		msix_requested;
 50};
 51
 52struct 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_ULP_STOPPED	0x8
 62	#define BNXT_EN_FLAG_VF			0x10
 63#define BNXT_EN_VF(edev)	((edev)->flags & BNXT_EN_FLAG_VF)
 64	#define BNXT_EN_FLAG_ROCE_VF_RES_MGMT	0x20
 65	#define BNXT_EN_FLAG_SW_RES_LMT		0x40
 66#define BNXT_EN_SW_RES_LMT(edev) ((edev)->flags & BNXT_EN_FLAG_SW_RES_LMT)
 67
 68	struct bnxt_ulp			*ulp_tbl;
 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	int				l2_db_offset;	/* Doorbell offset in
 78							 * bytes within
 79							 * l2_db_size_nc.
 80							 */
 81	u16				chip_num;
 82	u16				hw_ring_stats_size;
 83	u16				pf_port_id;
 84	unsigned long			en_state;	/* Could be checked in
 85							 * RoCE driver suspend
 86							 * mode only. Will be
 87							 * updated in resume.
 88							 */
 89	void __iomem                    *bar0;
 90
 91	u16				ulp_num_msix_vec;
 92	u16				ulp_num_ctxs;
 93
 94					/* serialize ulp operations */
 95	struct mutex			en_dev_lock;
 96};
 97
 98static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev)
 99{
100	if (edev && rcu_access_pointer(edev->ulp_tbl->ulp_ops))
101		return true;
102	return false;
103}
104
105int bnxt_get_ulp_msix_num(struct bnxt *bp);
106int bnxt_get_ulp_msix_num_in_use(struct bnxt *bp);
107void bnxt_set_ulp_msix_num(struct bnxt *bp, int num);
108int bnxt_get_ulp_stat_ctxs(struct bnxt *bp);
109void bnxt_set_ulp_stat_ctxs(struct bnxt *bp, int num_ctxs);
110int bnxt_get_ulp_stat_ctxs_in_use(struct bnxt *bp);
111void bnxt_set_dflt_ulp_stat_ctxs(struct bnxt *bp);
112void bnxt_ulp_stop(struct bnxt *bp);
113void bnxt_ulp_start(struct bnxt *bp, int err);
114void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs);
115void bnxt_ulp_irq_stop(struct bnxt *bp);
116void bnxt_ulp_irq_restart(struct bnxt *bp, int err);
117void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl);
118void bnxt_rdma_aux_device_uninit(struct bnxt *bp);
119void bnxt_rdma_aux_device_del(struct bnxt *bp);
120void bnxt_rdma_aux_device_add(struct bnxt *bp);
121void bnxt_rdma_aux_device_init(struct bnxt *bp);
122int bnxt_register_dev(struct bnxt_en_dev *edev, struct bnxt_ulp_ops *ulp_ops,
123		      void *handle);
124void bnxt_unregister_dev(struct bnxt_en_dev *edev);
125int bnxt_send_msg(struct bnxt_en_dev *edev, struct bnxt_fw_msg *fw_msg);
126void bnxt_register_async_events(struct bnxt_en_dev *edev,
127				unsigned long *events_bmap, u16 max_id);
128#endif