1/*
2 * Broadcom NetXtreme-E RoCE driver.
3 *
4 * Copyright (c) 2016 - 2017, Broadcom. All rights reserved.  The term
5 * Broadcom refers to Broadcom Limited and/or its subsidiaries.
6 *
7 * This software is available to you under a choice of one of two
8 * licenses.  You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * BSD license below:
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 *
17 * 1. Redistributions of source code must retain the above copyright
18 *    notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 *    notice, this list of conditions and the following disclaimer in
21 *    the documentation and/or other materials provided with the
22 *    distribution.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
26 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
31 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
32 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
33 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
34 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 *
36 * Description: Slow Path Operators (header)
37 *
38 */
39
40#ifndef __BNXT_RE_H__
41#define __BNXT_RE_H__
42#define ROCE_DRV_MODULE_NAME		"bnxt_re"
43
44#define BNXT_RE_DESC	"Broadcom NetXtreme-C/E RoCE Driver"
45#define BNXT_RE_PAGE_SHIFT_4K		(12)
46#define BNXT_RE_PAGE_SHIFT_8K		(13)
47#define BNXT_RE_PAGE_SHIFT_64K		(16)
48#define BNXT_RE_PAGE_SHIFT_2M		(21)
49#define BNXT_RE_PAGE_SHIFT_8M		(23)
50#define BNXT_RE_PAGE_SHIFT_1G		(30)
51
52#define BNXT_RE_PAGE_SIZE_4K		BIT(BNXT_RE_PAGE_SHIFT_4K)
53#define BNXT_RE_PAGE_SIZE_8K		BIT(BNXT_RE_PAGE_SHIFT_8K)
54#define BNXT_RE_PAGE_SIZE_64K		BIT(BNXT_RE_PAGE_SHIFT_64K)
55#define BNXT_RE_PAGE_SIZE_2M		BIT(BNXT_RE_PAGE_SHIFT_2M)
56#define BNXT_RE_PAGE_SIZE_8M		BIT(BNXT_RE_PAGE_SHIFT_8M)
57#define BNXT_RE_PAGE_SIZE_1G		BIT(BNXT_RE_PAGE_SHIFT_1G)
58
59#define BNXT_RE_MAX_MR_SIZE_LOW		BIT_ULL(BNXT_RE_PAGE_SHIFT_1G)
60#define BNXT_RE_MAX_MR_SIZE_HIGH	BIT_ULL(39)
61#define BNXT_RE_MAX_MR_SIZE		BNXT_RE_MAX_MR_SIZE_HIGH
62
63#define BNXT_RE_MAX_QPC_COUNT		(64 * 1024)
64#define BNXT_RE_MAX_MRW_COUNT		(64 * 1024)
65#define BNXT_RE_MAX_SRQC_COUNT		(64 * 1024)
66#define BNXT_RE_MAX_CQ_COUNT		(64 * 1024)
67#define BNXT_RE_MAX_MRW_COUNT_64K	(64 * 1024)
68#define BNXT_RE_MAX_MRW_COUNT_256K	(256 * 1024)
69
70/* Number of MRs to reserve for PF, leaving remainder for VFs */
71#define BNXT_RE_RESVD_MR_FOR_PF         (32 * 1024)
72#define BNXT_RE_MAX_GID_PER_VF          128
73
74/*
75 * Percentage of resources of each type reserved for PF.
76 * Remaining resources are divided equally among VFs.
77 * [0, 100]
78 */
79#define BNXT_RE_PCT_RSVD_FOR_PF         50
80
81#define BNXT_RE_UD_QP_HW_STALL		0x400000
82
83#define BNXT_RE_RQ_WQE_THRESHOLD	32
84
85/*
86 * Setting the default ack delay value to 16, which means
87 * the default timeout is approx. 260ms(4 usec * 2 ^(timeout))
88 */
89
90#define BNXT_RE_DEFAULT_ACK_DELAY	16
91
92struct bnxt_re_ring_attr {
93	dma_addr_t	*dma_arr;
94	int		pages;
95	int		type;
96	u32		depth;
97	u32		lrid; /* Logical ring id */
98	u8		mode;
99};
100
101struct bnxt_re_work {
102	struct work_struct	work;
103	unsigned long		event;
104	struct bnxt_re_dev      *rdev;
105	struct net_device	*vlan_dev;
106};
107
108struct bnxt_re_sqp_entries {
109	struct bnxt_qplib_sge sge;
110	u64 wrid;
111	/* For storing the actual qp1 cqe */
112	struct bnxt_qplib_cqe cqe;
113	struct bnxt_re_qp *qp1_qp;
114};
115
116#define BNXT_RE_MAX_GSI_SQP_ENTRIES	1024
117struct bnxt_re_gsi_context {
118	struct	bnxt_re_qp *gsi_qp;
119	struct	bnxt_re_qp *gsi_sqp;
120	struct	bnxt_re_ah *gsi_sah;
121	struct	bnxt_re_sqp_entries *sqp_tbl;
122};
123
124#define BNXT_RE_MIN_MSIX		2
125#define BNXT_RE_MAX_MSIX		9
126#define BNXT_RE_AEQ_IDX			0
127#define BNXT_RE_NQ_IDX			1
128#define BNXT_RE_GEN_P5_MAX_VF		64
129
130struct bnxt_re_dev {
131	struct ib_device		ibdev;
132	struct list_head		list;
133	unsigned long			flags;
134#define BNXT_RE_FLAG_NETDEV_REGISTERED		0
135#define BNXT_RE_FLAG_GOT_MSIX			2
136#define BNXT_RE_FLAG_HAVE_L2_REF		3
137#define BNXT_RE_FLAG_RCFW_CHANNEL_EN		4
138#define BNXT_RE_FLAG_QOS_WORK_REG		5
139#define BNXT_RE_FLAG_RESOURCES_ALLOCATED	7
140#define BNXT_RE_FLAG_RESOURCES_INITIALIZED	8
141#define BNXT_RE_FLAG_ISSUE_ROCE_STATS          29
142	struct net_device		*netdev;
143	unsigned int			version, major, minor;
144	struct bnxt_qplib_chip_ctx	*chip_ctx;
145	struct bnxt_en_dev		*en_dev;
146	struct bnxt_msix_entry		msix_entries[BNXT_RE_MAX_MSIX];
147	int				num_msix;
148
149	int				id;
150
151	struct delayed_work		worker;
152	u8				cur_prio_map;
153	u16				active_speed;
154	u8				active_width;
155
156	/* FP Notification Queue (CQ & SRQ) */
157	struct tasklet_struct		nq_task;
158
159	/* RCFW Channel */
160	struct bnxt_qplib_rcfw		rcfw;
161
162	/* NQ */
163	struct bnxt_qplib_nq		nq[BNXT_RE_MAX_MSIX];
164
165	/* Device Resources */
166	struct bnxt_qplib_dev_attr	dev_attr;
167	struct bnxt_qplib_ctx		qplib_ctx;
168	struct bnxt_qplib_res		qplib_res;
169	struct bnxt_qplib_dpi		dpi_privileged;
170
171	atomic_t			qp_count;
172	struct mutex			qp_lock;	/* protect qp list */
173	struct list_head		qp_list;
174
175	atomic_t			cq_count;
176	atomic_t			srq_count;
177	atomic_t			mr_count;
178	atomic_t			mw_count;
179	/* Max of 2 lossless traffic class supported per port */
180	u16				cosq[2];
181
182	/* QP for for handling QP1 packets */
183	struct bnxt_re_gsi_context	gsi_ctx;
184	atomic_t nq_alloc_cnt;
185	u32 is_virtfn;
186	u32 num_vfs;
187	struct bnxt_qplib_roce_stats	stats;
188};
189
190#define to_bnxt_re_dev(ptr, member)	\
191	container_of((ptr), struct bnxt_re_dev, member)
192
193#define BNXT_RE_ROCE_V1_PACKET		0
194#define BNXT_RE_ROCEV2_IPV4_PACKET	2
195#define BNXT_RE_ROCEV2_IPV6_PACKET	3
196
197static inline struct device *rdev_to_dev(struct bnxt_re_dev *rdev)
198{
199	if (rdev)
200		return  &rdev->ibdev.dev;
201	return NULL;
202}
203
204#endif
205