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11#ifndef OTX2_TXRX_H
12#define OTX2_TXRX_H
13
14#include <linux/etherdevice.h>
15#include <linux/iommu.h>
16#include <linux/if_vlan.h>
17
18#define LBK_CHAN_BASE 0x000
19#define SDP_CHAN_BASE 0x700
20#define CGX_CHAN_BASE 0x800
21
22#define OTX2_DATA_ALIGN(X) ALIGN(X, OTX2_ALIGN)
23#define OTX2_HEAD_ROOM OTX2_ALIGN
24
25#define OTX2_ETH_HLEN (VLAN_ETH_HLEN + VLAN_HLEN)
26#define OTX2_MIN_MTU 64
27#define OTX2_MAX_MTU (9212 - OTX2_ETH_HLEN)
28
29#define OTX2_MAX_GSO_SEGS 255
30#define OTX2_MAX_FRAGS_IN_SQE 9
31
32
33#define RCV_FRAG_LEN1(x) \
34 ((OTX2_HEAD_ROOM + OTX2_DATA_ALIGN(x)) + \
35 OTX2_DATA_ALIGN(sizeof(struct skb_shared_info)))
36
37
38
39
40#define RCV_FRAG_LEN(x) \
41 ((RCV_FRAG_LEN1(x) < 2048) ? 2048 : RCV_FRAG_LEN1(x))
42
43#define DMA_BUFFER_LEN(x) \
44 ((x) - OTX2_HEAD_ROOM - \
45 OTX2_DATA_ALIGN(sizeof(struct skb_shared_info)))
46
47
48
49
50#define CQ_CQE_THRESH_DEFAULT 10
51
52
53
54
55#define CQ_TIMER_THRESH_DEFAULT 1
56#define CQ_TIMER_THRESH_MAX 25
57
58
59
60
61#define CQ_QCOUNT_DEFAULT 1
62
63struct queue_stats {
64 u64 bytes;
65 u64 pkts;
66};
67
68struct otx2_rcv_queue {
69 struct queue_stats stats;
70};
71
72struct sg_list {
73 u16 num_segs;
74 u64 skb;
75 u64 size[OTX2_MAX_FRAGS_IN_SQE];
76 u64 dma_addr[OTX2_MAX_FRAGS_IN_SQE];
77};
78
79struct otx2_snd_queue {
80 u8 aura_id;
81 u16 head;
82 u16 sqe_size;
83 u32 sqe_cnt;
84 u16 num_sqbs;
85 u16 sqe_thresh;
86 u8 sqe_per_sqb;
87 u64 io_addr;
88 u64 *aura_fc_addr;
89 u64 *lmt_addr;
90 void *sqe_base;
91 struct qmem *sqe;
92 struct qmem *tso_hdrs;
93 struct sg_list *sg;
94 struct queue_stats stats;
95 u16 sqb_count;
96 u64 *sqb_ptrs;
97} ____cacheline_aligned_in_smp;
98
99enum cq_type {
100 CQ_RX,
101 CQ_TX,
102 CQS_PER_CINT = 2,
103};
104
105struct otx2_cq_poll {
106 void *dev;
107#define CINT_INVALID_CQ 255
108 u8 cint_idx;
109 u8 cq_ids[CQS_PER_CINT];
110 struct napi_struct napi;
111};
112
113struct otx2_pool {
114 struct qmem *stack;
115 struct qmem *fc_addr;
116 u16 rbsize;
117};
118
119struct otx2_cq_queue {
120 u8 cq_idx;
121 u8 cq_type;
122 u8 cint_idx;
123 u8 refill_task_sched;
124 u16 cqe_size;
125 u16 pool_ptrs;
126 u32 cqe_cnt;
127 u32 cq_head;
128 void *cqe_base;
129 struct qmem *cqe;
130 struct otx2_pool *rbpool;
131} ____cacheline_aligned_in_smp;
132
133struct otx2_qset {
134 u32 rqe_cnt;
135 u32 sqe_cnt;
136#define OTX2_MAX_CQ_CNT 64
137 u16 cq_cnt;
138 u16 xqe_size;
139 struct otx2_pool *pool;
140 struct otx2_cq_poll *napi;
141 struct otx2_cq_queue *cq;
142 struct otx2_snd_queue *sq;
143 struct otx2_rcv_queue *rq;
144};
145
146
147static inline u64 otx2_iova_to_phys(void *iommu_domain, dma_addr_t dma_addr)
148{
149
150 if (likely(iommu_domain))
151 return iommu_iova_to_phys(iommu_domain, dma_addr);
152 return dma_addr;
153}
154
155int otx2_napi_handler(struct napi_struct *napi, int budget);
156bool otx2_sq_append_skb(struct net_device *netdev, struct otx2_snd_queue *sq,
157 struct sk_buff *skb, u16 qidx);
158#endif
159