fsl_mc_cmd.h
4.25 KB
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
/* Copyright 2013-2015 Freescale Semiconductor Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __FSL_MC_CMD_H
#define __FSL_MC_CMD_H
#define MC_CMD_NUM_OF_PARAMS 7
#define MAKE_UMASK64(_width) \
((uint64_t)((_width) < 64 ? ((uint64_t)1 << (_width)) - 1 : -1))
static inline uint64_t u64_enc(int lsoffset, int width, uint64_t val)
{
return (uint64_t)(((uint64_t)val & MAKE_UMASK64(width)) << lsoffset);
}
static inline uint64_t u64_dec(uint64_t val, int lsoffset, int width)
{
return (uint64_t)((val >> lsoffset) & MAKE_UMASK64(width));
}
struct mc_command {
uint64_t header;
uint64_t params[MC_CMD_NUM_OF_PARAMS];
};
enum mc_cmd_status {
MC_CMD_STATUS_OK = 0x0, /*!< Completed successfully */
MC_CMD_STATUS_READY = 0x1, /*!< Ready to be processed */
MC_CMD_STATUS_AUTH_ERR = 0x3, /*!< Authentication error */
MC_CMD_STATUS_NO_PRIVILEGE = 0x4, /*!< No privilege */
MC_CMD_STATUS_DMA_ERR = 0x5, /*!< DMA or I/O error */
MC_CMD_STATUS_CONFIG_ERR = 0x6, /*!< Configuration error */
MC_CMD_STATUS_TIMEOUT = 0x7, /*!< Operation timed out */
MC_CMD_STATUS_NO_RESOURCE = 0x8, /*!< No resources */
MC_CMD_STATUS_NO_MEMORY = 0x9, /*!< No memory available */
MC_CMD_STATUS_BUSY = 0xA, /*!< Device is busy */
MC_CMD_STATUS_UNSUPPORTED_OP = 0xB, /*!< Unsupported operation */
MC_CMD_STATUS_INVALID_STATE = 0xC /*!< Invalid state */
};
#define MC_CMD_HDR_CMDID_O 52 /* Command ID field offset */
#define MC_CMD_HDR_CMDID_S 12 /* Command ID field size */
#define MC_CMD_HDR_STATUS_O 16 /* Status field offset */
#define MC_CMD_HDR_TOKEN_O 38 /* Token field offset */
#define MC_CMD_HDR_TOKEN_S 10 /* Token field size */
#define MC_CMD_HDR_STATUS_S 8 /* Status field size*/
#define MC_CMD_HDR_PRI_O 15 /* Priority field offset */
#define MC_CMD_HDR_PRI_S 1 /* Priority field size */
#define MC_CMD_HDR_READ_STATUS(_hdr) \
((enum mc_cmd_status)u64_dec((_hdr), \
MC_CMD_HDR_STATUS_O, MC_CMD_HDR_STATUS_S))
#define MC_CMD_HDR_READ_TOKEN(_hdr) \
((uint16_t)u64_dec((_hdr), MC_CMD_HDR_TOKEN_O, MC_CMD_HDR_TOKEN_S))
#define MC_CMD_PRI_LOW 0 /*!< Low Priority command indication */
#define MC_CMD_PRI_HIGH 1 /*!< High Priority command indication */
#define MC_EXT_OP(_ext, _param, _offset, _width, _type, _arg) \
((_ext)[_param] |= u64_enc((_offset), (_width), _arg))
#define MC_CMD_OP(_cmd, _param, _offset, _width, _type, _arg) \
((_cmd).params[_param] |= u64_enc((_offset), (_width), _arg))
#define MC_RSP_OP(_cmd, _param, _offset, _width, _type, _arg) \
(_arg = (_type)u64_dec(_cmd.params[_param], (_offset), (_width)))
static inline uint64_t mc_encode_cmd_header(uint16_t cmd_id,
uint8_t priority,
uint16_t token)
{
uint64_t hdr;
hdr = u64_enc(MC_CMD_HDR_CMDID_O, MC_CMD_HDR_CMDID_S, cmd_id);
hdr |= u64_enc(MC_CMD_HDR_TOKEN_O, MC_CMD_HDR_TOKEN_S, token);
hdr |= u64_enc(MC_CMD_HDR_PRI_O, MC_CMD_HDR_PRI_S, priority);
hdr |= u64_enc(MC_CMD_HDR_STATUS_O, MC_CMD_HDR_STATUS_S,
MC_CMD_STATUS_READY);
return hdr;
}
/**
* mc_write_command - writes a command to a Management Complex (MC) portal
*
* @portal: pointer to an MC portal
* @cmd: pointer to a filled command
*/
static inline void mc_write_command(struct mc_command __iomem *portal,
struct mc_command *cmd)
{
int i;
/* copy command parameters into the portal */
for (i = 0; i < MC_CMD_NUM_OF_PARAMS; i++)
writeq(cmd->params[i], &portal->params[i]);
/* submit the command by writing the header */
writeq(cmd->header, &portal->header);
}
/**
* mc_read_response - reads the response for the last MC command from a
* Management Complex (MC) portal
*
* @portal: pointer to an MC portal
* @resp: pointer to command response buffer
*
* Returns MC_CMD_STATUS_OK on Success; Error code otherwise.
*/
static inline enum mc_cmd_status mc_read_response(
struct mc_command __iomem *portal,
struct mc_command *resp)
{
int i;
enum mc_cmd_status status;
/* Copy command response header from MC portal: */
resp->header = readq(&portal->header);
status = MC_CMD_HDR_READ_STATUS(resp->header);
if (status != MC_CMD_STATUS_OK)
return status;
/* Copy command response data from MC portal: */
for (i = 0; i < MC_CMD_NUM_OF_PARAMS; i++)
resp->params[i] = readq(&portal->params[i]);
return status;
}
int mc_send_command(struct fsl_mc_io *mc_io, struct mc_command *cmd);
#endif /* __FSL_MC_CMD_H */