1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
4  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
5  */
6 
7 #ifndef _ENIC_RES_H_
8 #define _ENIC_RES_H_
9 
10 #include "wq_enet_desc.h"
11 #include "rq_enet_desc.h"
12 #include "vnic_wq.h"
13 #include "vnic_rq.h"
14 
15 #define ENIC_MIN_WQ_DESCS		64
16 #define ENIC_MAX_WQ_DESCS		4096
17 #define ENIC_MIN_RQ_DESCS		64
18 #define ENIC_MAX_RQ_DESCS		4096
19 
20 #define ENIC_MIN_MTU			ETH_MIN_MTU
21 #define ENIC_MAX_MTU			9000
22 
23 #define ENIC_MULTICAST_PERFECT_FILTERS	32
24 #define ENIC_UNICAST_PERFECT_FILTERS	32
25 
26 #define ENIC_NON_TSO_MAX_DESC		16
27 
28 #define ENIC_SETTING(enic, f) ((enic->config.flags & VENETF_##f) ? 1 : 0)
29 
30 static inline void enic_queue_wq_desc_ex(struct vnic_wq *wq,
31 	void *os_buf, dma_addr_t dma_addr, unsigned int len,
32 	unsigned int mss_or_csum_offset, unsigned int hdr_len,
33 	int vlan_tag_insert, unsigned int vlan_tag,
34 	int offload_mode, int cq_entry, int sop, int eop, int loopback)
35 {
36 	struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
37 	u8 desc_skip_cnt = 1;
38 	u8 compressed_send = 0;
39 	u64 wrid = 0;
40 
41 	wq_enet_desc_enc(desc,
42 		(u64)dma_addr | VNIC_PADDR_TARGET,
43 		(u16)len,
44 		(u16)mss_or_csum_offset,
45 		(u16)hdr_len, (u8)offload_mode,
46 		(u8)eop, (u8)cq_entry,
47 		0, /* fcoe_encap */
48 		(u8)vlan_tag_insert,
49 		(u16)vlan_tag,
50 		(u8)loopback);
51 
52 	vnic_wq_post(wq, os_buf, dma_addr, len, sop, eop, desc_skip_cnt,
53 			(u8)cq_entry, compressed_send, wrid);
54 }
55 
56 static inline void enic_queue_wq_desc_cont(struct vnic_wq *wq,
57 	void *os_buf, dma_addr_t dma_addr, unsigned int len,
58 	int eop, int loopback)
59 {
60 	enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
61 		0, 0, 0, 0, 0,
62 		eop, 0 /* !SOP */, eop, loopback);
63 }
64 
65 static inline void enic_queue_wq_desc(struct vnic_wq *wq, void *os_buf,
66 	dma_addr_t dma_addr, unsigned int len, int vlan_tag_insert,
67 	unsigned int vlan_tag, int eop, int loopback)
68 {
69 	enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
70 		0, 0, vlan_tag_insert, vlan_tag,
71 		WQ_ENET_OFFLOAD_MODE_CSUM,
72 		eop, 1 /* SOP */, eop, loopback);
73 }
74 
75 static inline void enic_queue_wq_desc_csum(struct vnic_wq *wq,
76 	void *os_buf, dma_addr_t dma_addr, unsigned int len,
77 	int ip_csum, int tcpudp_csum, int vlan_tag_insert,
78 	unsigned int vlan_tag, int eop, int loopback)
79 {
80 	enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
81 		(ip_csum ? 1 : 0) + (tcpudp_csum ? 2 : 0),
82 		0, vlan_tag_insert, vlan_tag,
83 		WQ_ENET_OFFLOAD_MODE_CSUM,
84 		eop, 1 /* SOP */, eop, loopback);
85 }
86 
87 static inline void enic_queue_wq_desc_csum_l4(struct vnic_wq *wq,
88 	void *os_buf, dma_addr_t dma_addr, unsigned int len,
89 	unsigned int csum_offset, unsigned int hdr_len,
90 	int vlan_tag_insert, unsigned int vlan_tag, int eop, int loopback)
91 {
92 	enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
93 		csum_offset, hdr_len, vlan_tag_insert, vlan_tag,
94 		WQ_ENET_OFFLOAD_MODE_CSUM_L4,
95 		eop, 1 /* SOP */, eop, loopback);
96 }
97 
98 static inline void enic_queue_wq_desc_tso(struct vnic_wq *wq,
99 	void *os_buf, dma_addr_t dma_addr, unsigned int len,
100 	unsigned int mss, unsigned int hdr_len, int vlan_tag_insert,
101 	unsigned int vlan_tag, int eop, int loopback)
102 {
103 	enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
104 		mss, hdr_len, vlan_tag_insert, vlan_tag,
105 		WQ_ENET_OFFLOAD_MODE_TSO,
106 		eop, 1 /* SOP */, eop, loopback);
107 }
108 
109 static inline void enic_queue_rq_desc(struct vnic_rq *rq,
110 	void *os_buf, unsigned int os_buf_index,
111 	dma_addr_t dma_addr, unsigned int len)
112 {
113 	struct rq_enet_desc *desc = vnic_rq_next_desc(rq);
114 	u64 wrid = 0;
115 	u8 type = os_buf_index ?
116 		RQ_ENET_TYPE_NOT_SOP : RQ_ENET_TYPE_ONLY_SOP;
117 
118 	rq_enet_desc_enc(desc,
119 		(u64)dma_addr | VNIC_PADDR_TARGET,
120 		type, (u16)len);
121 
122 	vnic_rq_post(rq, os_buf, os_buf_index, dma_addr, len, wrid);
123 }
124 
125 struct enic;
126 
127 int enic_get_vnic_config(struct enic *);
128 int enic_add_vlan(struct enic *enic, u16 vlanid);
129 int enic_del_vlan(struct enic *enic, u16 vlanid);
130 int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type,
131 	u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en,
132 	u8 ig_vlan_strip_en);
133 int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len);
134 int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len);
135 void enic_get_res_counts(struct enic *enic);
136 void enic_init_vnic_resources(struct enic *enic);
137 int enic_alloc_vnic_resources(struct enic *);
138 void enic_free_vnic_resources(struct enic *);
139 
140 #endif /* _ENIC_RES_H_ */
141