summaryrefslogtreecommitdiff
path: root/drivers/misc/habanalabs/include/goya/goya_packets.h
blob: ef54bad2050991a2d863fb2c03afe2e52a42210f (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
/* SPDX-License-Identifier: GPL-2.0
 *
 * Copyright 2017-2018 HabanaLabs, Ltd.
 * All Rights Reserved.
 *
 */

#ifndef GOYA_PACKETS_H
#define GOYA_PACKETS_H

#include <linux/types.h>

#define PACKET_HEADER_PACKET_ID_SHIFT		56
#define PACKET_HEADER_PACKET_ID_MASK		0x1F00000000000000ull

enum packet_id {
	PACKET_WREG_32 = 0x1,
	PACKET_WREG_BULK = 0x2,
	PACKET_MSG_LONG = 0x3,
	PACKET_MSG_SHORT = 0x4,
	PACKET_CP_DMA = 0x5,
	PACKET_MSG_PROT = 0x7,
	PACKET_FENCE = 0x8,
	PACKET_LIN_DMA = 0x9,
	PACKET_NOP = 0xA,
	PACKET_STOP = 0xB,
	MAX_PACKET_ID = (PACKET_HEADER_PACKET_ID_MASK >>
				PACKET_HEADER_PACKET_ID_SHIFT) + 1
};

enum goya_dma_direction {
	DMA_HOST_TO_DRAM,
	DMA_HOST_TO_SRAM,
	DMA_DRAM_TO_SRAM,
	DMA_SRAM_TO_DRAM,
	DMA_SRAM_TO_HOST,
	DMA_DRAM_TO_HOST,
	DMA_DRAM_TO_DRAM,
	DMA_SRAM_TO_SRAM,
	DMA_ENUM_MAX
};

#define GOYA_PKT_CTL_OPCODE_SHIFT	24
#define GOYA_PKT_CTL_OPCODE_MASK	0x1F000000

#define GOYA_PKT_CTL_EB_SHIFT		29
#define GOYA_PKT_CTL_EB_MASK		0x20000000

#define GOYA_PKT_CTL_RB_SHIFT		30
#define GOYA_PKT_CTL_RB_MASK		0x40000000

#define GOYA_PKT_CTL_MB_SHIFT		31
#define GOYA_PKT_CTL_MB_MASK		0x80000000

/* All packets have, at least, an 8-byte header, which contains
 * the packet type. The kernel driver uses the packet header for packet
 * validation and to perform any necessary required preparation before
 * sending them off to the hardware.
 */
struct goya_packet {
	__le64 header;
	/* The rest of the packet data follows. Use the corresponding
	 * packet_XXX struct to deference the data, based on packet type
	 */
	u8 contents[0];
};

struct packet_nop {
	__le32 reserved;
	__le32 ctl;
};

struct packet_stop {
	__le32 reserved;
	__le32 ctl;
};

#define GOYA_PKT_WREG32_CTL_REG_OFFSET_SHIFT	0
#define GOYA_PKT_WREG32_CTL_REG_OFFSET_MASK	0x0000FFFF

struct packet_wreg32 {
	__le32 value;
	__le32 ctl;
};

struct packet_wreg_bulk {
	__le32 size64;
	__le32 ctl;
	__le64 values[0]; /* data starts here */
};

struct packet_msg_long {
	__le32 value;
	__le32 ctl;
	__le64 addr;
};

struct packet_msg_short {
	__le32 value;
	__le32 ctl;
};

struct packet_msg_prot {
	__le32 value;
	__le32 ctl;
	__le64 addr;
};

struct packet_fence {
	__le32 cfg;
	__le32 ctl;
};

#define GOYA_PKT_LIN_DMA_CTL_WO_SHIFT		0
#define GOYA_PKT_LIN_DMA_CTL_WO_MASK		0x00000001

#define GOYA_PKT_LIN_DMA_CTL_RDCOMP_SHIFT	1
#define GOYA_PKT_LIN_DMA_CTL_RDCOMP_MASK	0x00000002

#define GOYA_PKT_LIN_DMA_CTL_WRCOMP_SHIFT	2
#define GOYA_PKT_LIN_DMA_CTL_WRCOMP_MASK	0x00000004

#define GOYA_PKT_LIN_DMA_CTL_MEMSET_SHIFT	6
#define GOYA_PKT_LIN_DMA_CTL_MEMSET_MASK	0x00000040

#define GOYA_PKT_LIN_DMA_CTL_DMA_DIR_SHIFT	20
#define GOYA_PKT_LIN_DMA_CTL_DMA_DIR_MASK	0x00700000

struct packet_lin_dma {
	__le32 tsize;
	__le32 ctl;
	__le64 src_addr;
	__le64 dst_addr;
};

struct packet_cp_dma {
	__le32 tsize;
	__le32 ctl;
	__le64 src_addr;
};

#endif /* GOYA_PACKETS_H */