1 /* Copyright 2013-2015 Freescale Semiconductor Inc.
3 * SPDX-License-Identifier: GPL-2.0+
8 #define MC_CMD_NUM_OF_PARAMS 7
10 #define MAKE_UMASK64(_width) \
11 ((uint64_t)((_width) < 64 ? ((uint64_t)1 << (_width)) - 1 : -1))
13 static inline uint64_t mc_enc(int lsoffset
, int width
, uint64_t val
)
15 return (uint64_t)(((uint64_t)val
& MAKE_UMASK64(width
)) << lsoffset
);
17 static inline uint64_t mc_dec(uint64_t val
, int lsoffset
, int width
)
19 return (uint64_t)((val
>> lsoffset
) & MAKE_UMASK64(width
));
24 uint64_t params
[MC_CMD_NUM_OF_PARAMS
];
28 MC_CMD_STATUS_OK
= 0x0, /*!< Completed successfully */
29 MC_CMD_STATUS_READY
= 0x1, /*!< Ready to be processed */
30 MC_CMD_STATUS_AUTH_ERR
= 0x3, /*!< Authentication error */
31 MC_CMD_STATUS_NO_PRIVILEGE
= 0x4, /*!< No privilege */
32 MC_CMD_STATUS_DMA_ERR
= 0x5, /*!< DMA or I/O error */
33 MC_CMD_STATUS_CONFIG_ERR
= 0x6, /*!< Configuration error */
34 MC_CMD_STATUS_TIMEOUT
= 0x7, /*!< Operation timed out */
35 MC_CMD_STATUS_NO_RESOURCE
= 0x8, /*!< No resources */
36 MC_CMD_STATUS_NO_MEMORY
= 0x9, /*!< No memory available */
37 MC_CMD_STATUS_BUSY
= 0xA, /*!< Device is busy */
38 MC_CMD_STATUS_UNSUPPORTED_OP
= 0xB, /*!< Unsupported operation */
39 MC_CMD_STATUS_INVALID_STATE
= 0xC /*!< Invalid state */
46 /* High priority flag */
47 #define MC_CMD_FLAG_PRI 0x00008000
49 #define MC_CMD_NO_FLAGS 0x00000000
50 /* Command completion flag */
51 #define MC_CMD_FLAG_INTR_DIS 0x01000000
54 #define MC_CMD_HDR_CMDID_O 52 /* Command ID field offset */
55 #define MC_CMD_HDR_CMDID_S 12 /* Command ID field size */
56 #define MC_CMD_HDR_STATUS_O 16 /* Status field offset */
57 #define MC_CMD_HDR_TOKEN_O 38 /* Token field offset */
58 #define MC_CMD_HDR_TOKEN_S 10 /* Token field size */
59 #define MC_CMD_HDR_STATUS_S 8 /* Status field size*/
60 #define MC_CMD_HDR_FLAGS_O 0 /* Flags field offset */
61 #define MC_CMD_HDR_FLAGS_S 32 /* Flags field size*/
62 #define MC_CMD_HDR_FLAGS_MASK 0xFF00FF00 /* Command flags mask */
64 #define MC_CMD_HDR_READ_STATUS(_hdr) \
65 ((enum mc_cmd_status)mc_dec((_hdr), \
66 MC_CMD_HDR_STATUS_O, MC_CMD_HDR_STATUS_S))
68 #define MC_CMD_HDR_READ_TOKEN(_hdr) \
69 ((uint16_t)mc_dec((_hdr), MC_CMD_HDR_TOKEN_O, MC_CMD_HDR_TOKEN_S))
71 #define MC_PREP_OP(_ext, _param, _offset, _width, _type, _arg) \
72 ((_ext)[_param] |= cpu_to_le64(mc_enc((_offset), (_width), _arg)))
74 #define MC_EXT_OP(_ext, _param, _offset, _width, _type, _arg) \
75 (_arg = (_type)mc_dec(cpu_to_le64(_ext[_param]), (_offset), (_width)))
77 #define MC_CMD_OP(_cmd, _param, _offset, _width, _type, _arg) \
78 ((_cmd).params[_param] |= mc_enc((_offset), (_width), _arg))
80 #define MC_RSP_OP(_cmd, _param, _offset, _width, _type, _arg) \
81 (_arg = (_type)mc_dec(_cmd.params[_param], (_offset), (_width)))
83 static inline uint64_t mc_encode_cmd_header(uint16_t cmd_id
,
89 hdr
= mc_enc(MC_CMD_HDR_CMDID_O
, MC_CMD_HDR_CMDID_S
, cmd_id
);
90 hdr
|= mc_enc(MC_CMD_HDR_FLAGS_O
, MC_CMD_HDR_FLAGS_S
,
91 (cmd_flags
& MC_CMD_HDR_FLAGS_MASK
));
92 hdr
|= mc_enc(MC_CMD_HDR_TOKEN_O
, MC_CMD_HDR_TOKEN_S
, token
);
93 hdr
|= mc_enc(MC_CMD_HDR_STATUS_O
, MC_CMD_HDR_STATUS_S
,
100 * mc_write_command - writes a command to a Management Complex (MC) portal
102 * @portal: pointer to an MC portal
103 * @cmd: pointer to a filled command
105 static inline void mc_write_command(struct mc_command __iomem
*portal
,
106 struct mc_command
*cmd
)
110 /* copy command parameters into the portal */
111 for (i
= 0; i
< MC_CMD_NUM_OF_PARAMS
; i
++)
112 writeq(cmd
->params
[i
], &portal
->params
[i
]);
114 /* submit the command by writing the header */
115 writeq(cmd
->header
, &portal
->header
);
119 * mc_read_response - reads the response for the last MC command from a
120 * Management Complex (MC) portal
122 * @portal: pointer to an MC portal
123 * @resp: pointer to command response buffer
125 * Returns MC_CMD_STATUS_OK on Success; Error code otherwise.
127 static inline enum mc_cmd_status
mc_read_response(
128 struct mc_command __iomem
*portal
,
129 struct mc_command
*resp
)
132 enum mc_cmd_status status
;
134 /* Copy command response header from MC portal: */
135 resp
->header
= readq(&portal
->header
);
136 status
= MC_CMD_HDR_READ_STATUS(resp
->header
);
137 if (status
!= MC_CMD_STATUS_OK
)
140 /* Copy command response data from MC portal: */
141 for (i
= 0; i
< MC_CMD_NUM_OF_PARAMS
; i
++)
142 resp
->params
[i
] = readq(&portal
->params
[i
]);
147 #endif /* __FSL_MC_CMD_H */