summaryrefslogtreecommitdiff
path: root/drivers/net/fjes/fjes_hw.h
blob: 1b3e9cac2746cae51753977f6fef18a137b18145 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
/*
 *  FUJITSU Extended Socket Network Device driver
 *  Copyright (c) 2015 FUJITSU LIMITED
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, see <http://www.gnu.org/licenses/>.
 *
 * The full GNU General Public License is included in this distribution in
 * the file called "COPYING".
 *
 */

#ifndef FJES_HW_H_
#define FJES_HW_H_

#include <linux/netdevice.h>
#include <linux/if_vlan.h>
#include <linux/vmalloc.h>

#include "fjes_regs.h"

struct fjes_hw;

#define EP_BUFFER_SUPPORT_VLAN_MAX 4
#define EP_BUFFER_INFO_SIZE 4096

#define FJES_DEVICE_RESET_TIMEOUT  ((17 + 1) * 3) /* sec */

#define EP_BUFFER_SIZE \
	(((sizeof(union ep_buffer_info) + (128 * (64 * 1024))) \
		/ EP_BUFFER_INFO_SIZE) * EP_BUFFER_INFO_SIZE)

#define EP_RING_NUM(buffer_size, frame_size) \
		(u32)((buffer_size) / (frame_size))

#define FJES_MTU_TO_BUFFER_SIZE(mtu) \
	(ETH_HLEN + VLAN_HLEN + (mtu) + ETH_FCS_LEN)
#define FJES_MTU_TO_FRAME_SIZE(mtu) \
	(sizeof(struct esmem_frame) + FJES_MTU_TO_BUFFER_SIZE(mtu))
#define FJES_MTU_DEFINE(size) \
	((size) - sizeof(struct esmem_frame) - \
	(ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN))

#define FJES_DEV_COMMAND_INFO_RES_LEN(epnum) (8 + 2 * (epnum))
#define FJES_DEV_COMMAND_SHARE_BUFFER_REQ_LEN(txb, rxb) \
	(24 + (8 * ((txb) / EP_BUFFER_INFO_SIZE + (rxb) / EP_BUFFER_INFO_SIZE)))

#define FJES_DEV_REQ_BUF_SIZE(maxep) \
	FJES_DEV_COMMAND_SHARE_BUFFER_REQ_LEN(EP_BUFFER_SIZE, EP_BUFFER_SIZE)
#define FJES_DEV_RES_BUF_SIZE(maxep) \
	FJES_DEV_COMMAND_INFO_RES_LEN(maxep)

/* Frame & MTU */
struct esmem_frame {
	__le32 frame_size;
	u8 frame_data[];
};

/* shared status region */
struct fjes_device_shared_info {
	int epnum;
	u8 ep_status[];
};

/* structures for command control request data*/
union fjes_device_command_req {
	struct {
		__le32 length;
	} info;
	struct {
		__le32 length;
		__le32 epid;
		__le64 buffer[];
	} share_buffer;
	struct {
		__le32 length;
		__le32 epid;
	} unshare_buffer;
	struct {
		__le32 length;
		__le32 mode;
		__le64 buffer_len;
		__le64 buffer[];
	} start_trace;
	struct {
		__le32 length;
	} stop_trace;
};

/* structures for command control response data */
union fjes_device_command_res {
	struct {
		__le32 length;
		__le32 code;
		struct {
			u8 es_status;
			u8 zone;
		} info[];
	} info;
	struct {
		__le32 length;
		__le32 code;
	} share_buffer;
	struct {
		__le32 length;
		__le32 code;
	} unshare_buffer;
	struct {
		__le32 length;
		__le32 code;
	} start_trace;
	struct {
		__le32 length;
		__le32 code;
	} stop_trace;
};

/* parameter for command control */
struct fjes_device_command_param {
	u32 req_len;
	phys_addr_t req_start;
	u32 res_len;
	phys_addr_t res_start;
	phys_addr_t share_start;
};

/* EP buffer information */
union ep_buffer_info {
	u8 raw[EP_BUFFER_INFO_SIZE];

	struct _ep_buffer_info_common_t {
		u32 version;
	} common;

	struct _ep_buffer_info_v1_t {
		u32 version;
		u32 info_size;

		u32 buffer_size;
		u16 count_max;

		u16 _rsv_1;

		u32 frame_max;
		u8 mac_addr[ETH_ALEN];

		u16 _rsv_2;
		u32 _rsv_3;

		u16 tx_status;
		u16 rx_status;

		u32 head;
		u32 tail;

		u16 vlan_id[EP_BUFFER_SUPPORT_VLAN_MAX];

	} v1i;

};

/* buffer pair for Extended Partition */
struct ep_share_mem_info {
	struct epbuf_handler {
		void *buffer;
		size_t size;
		union ep_buffer_info *info;
		u8 *ring;
	} tx, rx;

	struct rtnl_link_stats64 net_stats;

	u16 tx_status_work;

	u8 es_status;
	u8 zone;
};

struct es_device_trace {
	u32 record_num;
	u32 current_record;
	u32 status_flag;
	u32 _rsv;

	struct {
			u16 epid;
			u16 dir_offset;
			u32 data;
			u64 tsc;
	} record[];
};

struct fjes_hw_info {
	struct fjes_device_shared_info *share;
	union fjes_device_command_req *req_buf;
	u64 req_buf_size;
	union fjes_device_command_res *res_buf;
	u64 res_buf_size;

	int *my_epid;
	int *max_epid;

	struct es_device_trace *trace;
	u64 trace_size;

	struct mutex lock; /* buffer lock*/

	unsigned long buffer_share_bit;
	unsigned long buffer_unshare_reserve_bit;
};

struct fjes_hw {
	void *back;

	unsigned long txrx_stop_req_bit;
	unsigned long epstop_req_bit;

	int my_epid;
	int max_epid;

	struct ep_share_mem_info *ep_shm_info;

	struct fjes_hw_resource {
		u64 start;
		u64 size;
		int irq;
	} hw_res;

	u8 *base;

	struct fjes_hw_info hw_info;
};

int fjes_hw_init(struct fjes_hw *);
void fjes_hw_exit(struct fjes_hw *);
int fjes_hw_reset(struct fjes_hw *);

void fjes_hw_init_command_registers(struct fjes_hw *,
				    struct fjes_device_command_param *);
void fjes_hw_setup_epbuf(struct epbuf_handler *, u8 *, u32);
void fjes_hw_set_irqmask(struct fjes_hw *, enum REG_ICTL_MASK, bool);

#endif /* FJES_HW_H_ */