1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Copyright (c) 2014-2015 Hisilicon Limited.
4  */
5 
6 #ifndef _HNS_DSAF_RCB_H
7 #define _HNS_DSAF_RCB_H
8 
9 #include <linux/netdevice.h>
10 #include <linux/platform_device.h>
11 
12 #include "hnae.h"
13 #include "hns_dsaf_main.h"
14 
15 struct rcb_common_cb;
16 
17 #define HNS_RCB_IRQ_NUM_PER_QUEUE		2
18 #define HNS_RCB_IRQ_IDX_TX			0
19 #define HNS_RCB_IRQ_IDX_RX			1
20 #define HNS_RCB_TX_REG_OFFSET			0x40
21 
22 #define HNS_RCB_SERVICE_NW_ENGINE_NUM		DSAF_COMM_CHN
23 #define HNS_RCB_DEBUG_NW_ENGINE_NUM		1
24 #define HNS_RCB_RING_MAX_BD_PER_PKT		3
25 #define HNS_RCB_RING_MAX_TXBD_PER_PKT		3
26 #define HNS_RCBV2_RING_MAX_TXBD_PER_PKT		8
27 #define HNS_RCB_MAX_PKT_SIZE MAC_MAX_MTU
28 
29 #define HNS_RCB_RING_MAX_PENDING_BD		1024
30 #define HNS_RCB_RING_MIN_PENDING_BD		16
31 
32 #define HNS_RCB_REG_OFFSET			0x10000
33 
34 #define HNS_RCB_TX_FRAMES_LOW		1
35 #define HNS_RCB_RX_FRAMES_LOW		1
36 #define HNS_RCB_TX_FRAMES_HIGH		1023
37 #define HNS_RCB_RX_FRAMES_HIGH		1023
38 #define HNS_RCB_TX_USECS_LOW		1
39 #define HNS_RCB_RX_USECS_LOW		1
40 #define HNS_RCB_TX_USECS_HIGH		1023
41 #define HNS_RCB_RX_USECS_HIGH		1023
42 #define HNS_RCB_MAX_COALESCED_FRAMES		1023
43 #define HNS_RCB_MIN_COALESCED_FRAMES		1
44 #define HNS_RCB_DEF_RX_COALESCED_FRAMES		50
45 #define HNS_RCB_DEF_TX_COALESCED_FRAMES		1
46 #define HNS_RCB_CLK_FREQ_MHZ			350
47 #define HNS_RCB_MAX_COALESCED_USECS		0x3ff
48 #define HNS_RCB_DEF_COALESCED_USECS		30
49 #define HNS_RCB_DEF_GAP_TIME_USECS		20
50 #define HNS_RCB_TX_PKTLINE_OFFSET		8
51 
52 #define HNS_RCB_COMMON_ENDIAN			1
53 
54 #define HNS_BD_SIZE_512_TYPE			0
55 #define HNS_BD_SIZE_1024_TYPE			1
56 #define HNS_BD_SIZE_2048_TYPE			2
57 #define HNS_BD_SIZE_4096_TYPE			3
58 
59 #define HNS_RCB_COMMON_DUMP_REG_NUM 80
60 #define HNS_RCB_RING_DUMP_REG_NUM 40
61 #define HNS_RING_STATIC_REG_NUM 28
62 
63 #define HNS_DUMP_REG_NUM			500
64 #define HNS_STATIC_REG_NUM			12
65 
66 #define HNS_TSO_MODE_8BD_32K			1
67 #define HNS_TSO_MDOE_4BD_16K			0
68 
69 enum rcb_int_flag {
70 	RCB_INT_FLAG_TX = 0x1,
71 	RCB_INT_FLAG_RX = (0x1 << 1),
72 	RCB_INT_FLAG_MAX = (0x1 << 2),	/*must be the last element */
73 };
74 
75 struct hns_ring_hw_stats {
76 	u64 tx_pkts;
77 	u64 ppe_tx_ok_pkts;
78 	u64 ppe_tx_drop_pkts;
79 	u64 rx_pkts;
80 	u64 ppe_rx_ok_pkts;
81 	u64 ppe_rx_drop_pkts;
82 };
83 
84 struct ring_pair_cb {
85 	struct rcb_common_cb *rcb_common;	/*  ring belongs to */
86 	struct device *dev;	/*device for DMA mapping */
87 	struct hnae_queue q;
88 
89 	u16 index;	/* global index in a rcb common device */
90 	u16 buf_size;
91 
92 	int virq[HNS_RCB_IRQ_NUM_PER_QUEUE];
93 
94 	u8 port_id_in_comm;
95 	u8 used_by_vf;
96 
97 	struct hns_ring_hw_stats hw_stats;
98 };
99 
100 struct rcb_common_cb {
101 	u8 __iomem *io_base;
102 	phys_addr_t phy_base;
103 	struct dsaf_device *dsaf_dev;
104 	u16 max_vfn;
105 	u16 max_q_per_vf;
106 
107 	u8 comm_index;
108 	u32 ring_num;
109 	u32 desc_num; /*  desc num per queue*/
110 
111 	struct ring_pair_cb ring_pair_cb[0];
112 };
113 
114 int hns_rcb_buf_size2type(u32 buf_size);
115 
116 int hns_rcb_common_get_cfg(struct dsaf_device *dsaf_dev, int comm_index);
117 void hns_rcb_common_free_cfg(struct dsaf_device *dsaf_dev, u32 comm_index);
118 int hns_rcb_common_init_hw(struct rcb_common_cb *rcb_common);
119 void hns_rcb_start(struct hnae_queue *q, u32 val);
120 int hns_rcb_get_cfg(struct rcb_common_cb *rcb_common);
121 void hns_rcb_get_queue_mode(enum dsaf_mode dsaf_mode,
122 			    u16 *max_vfn, u16 *max_q_per_vf);
123 
124 void hns_rcb_common_init_commit_hw(struct rcb_common_cb *rcb_common);
125 
126 void hns_rcb_ring_enable_hw(struct hnae_queue *q, u32 val);
127 void hns_rcb_int_clr_hw(struct hnae_queue *q, u32 flag);
128 void hns_rcb_int_ctrl_hw(struct hnae_queue *q, u32 flag, u32 enable);
129 void hns_rcbv2_int_ctrl_hw(struct hnae_queue *q, u32 flag, u32 mask);
130 void hns_rcbv2_int_clr_hw(struct hnae_queue *q, u32 flag);
131 
132 void hns_rcb_init_hw(struct ring_pair_cb *ring);
133 void hns_rcb_reset_ring_hw(struct hnae_queue *q);
134 void hns_rcb_wait_fbd_clean(struct hnae_queue **qs, int q_num, u32 flag);
135 int hns_rcb_wait_tx_ring_clean(struct hnae_queue *qs);
136 u32 hns_rcb_get_rx_coalesced_frames(
137 	struct rcb_common_cb *rcb_common, u32 port_idx);
138 u32 hns_rcb_get_tx_coalesced_frames(
139 	struct rcb_common_cb *rcb_common, u32 port_idx);
140 u32 hns_rcb_get_coalesce_usecs(
141 	struct rcb_common_cb *rcb_common, u32 port_idx);
142 int hns_rcb_set_coalesce_usecs(
143 	struct rcb_common_cb *rcb_common, u32 port_idx, u32 timeout);
144 int hns_rcb_set_rx_coalesced_frames(
145 	struct rcb_common_cb *rcb_common, u32 port_idx, u32 coalesced_frames);
146 int hns_rcb_set_tx_coalesced_frames(
147 	struct rcb_common_cb *rcb_common, u32 port_idx, u32 coalesced_frames);
148 void hns_rcb_update_stats(struct hnae_queue *queue);
149 
150 void hns_rcb_get_stats(struct hnae_queue *queue, u64 *data);
151 
152 void hns_rcb_get_common_regs(struct rcb_common_cb *rcb_common, void *data);
153 
154 int hns_rcb_get_ring_sset_count(int stringset);
155 int hns_rcb_get_common_regs_count(void);
156 int hns_rcb_get_ring_regs_count(void);
157 
158 void hns_rcb_get_ring_regs(struct hnae_queue *queue, void *data);
159 
160 void hns_rcb_get_strings(int stringset, u8 *data, int index);
161 void hns_rcb_set_rx_ring_bs(struct hnae_queue *q, u32 buf_size);
162 void hns_rcb_set_tx_ring_bs(struct hnae_queue *q, u32 buf_size);
163 
164 #endif /* _HNS_DSAF_RCB_H */
165