1 /* Copyright 2014 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 u64_enc(int lsoffset
, int width
, uint64_t val
)
15 return (uint64_t)(((uint64_t)val
& MAKE_UMASK64(width
)) << lsoffset
);
17 static inline uint64_t u64_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 */
42 #define MC_CMD_HDR_CMDID_O 52 /* Command ID field offset */
43 #define MC_CMD_HDR_CMDID_S 12 /* Command ID field size */
44 #define MC_CMD_HDR_AUTHID_O 38 /* Authentication ID field offset */
45 #define MC_CMD_HDR_AUTHID_S 10 /* Authentication ID field size */
46 #define MC_CMD_HDR_STATUS_O 16 /* Status field offset */
47 #define MC_CMD_HDR_STATUS_S 8 /* Status field size*/
48 #define MC_CMD_HDR_PRI_O 15 /* Priority field offset */
49 #define MC_CMD_HDR_PRI_S 1 /* Priority field size */
51 #define MC_CMD_HDR_READ_STATUS(_hdr) \
52 ((enum mc_cmd_status)u64_dec((_hdr), \
53 MC_CMD_HDR_STATUS_O, MC_CMD_HDR_STATUS_S))
55 #define MC_CMD_HDR_READ_AUTHID(_hdr) \
56 ((uint16_t)u64_dec((_hdr), MC_CMD_HDR_AUTHID_O, MC_CMD_HDR_AUTHID_S))
58 #define MC_CMD_PRI_LOW 0 /*!< Low Priority command indication */
59 #define MC_CMD_PRI_HIGH 1 /*!< High Priority command indication */
61 #define MC_CMD_OP(_cmd, _param, _offset, _width, _type, _arg) \
62 ((_cmd).params[_param] |= u64_enc((_offset), (_width), _arg))
64 #define MC_RSP_OP(_cmd, _param, _offset, _width, _type, _arg) \
65 (_arg = (_type)u64_dec(_cmd.params[_param], (_offset), (_width)))
67 static inline uint64_t mc_encode_cmd_header(uint16_t cmd_id
,
73 hdr
= u64_enc(MC_CMD_HDR_CMDID_O
, MC_CMD_HDR_CMDID_S
, cmd_id
);
74 hdr
|= u64_enc(MC_CMD_HDR_AUTHID_O
, MC_CMD_HDR_AUTHID_S
, auth_id
);
75 hdr
|= u64_enc(MC_CMD_HDR_PRI_O
, MC_CMD_HDR_PRI_S
, priority
);
76 hdr
|= u64_enc(MC_CMD_HDR_STATUS_O
, MC_CMD_HDR_STATUS_S
,
83 * mc_write_command - writes a command to a Management Complex (MC) portal
85 * @portal: pointer to an MC portal
86 * @cmd: pointer to a filled command
88 static inline void mc_write_command(struct mc_command __iomem
*portal
,
89 struct mc_command
*cmd
)
93 /* copy command parameters into the portal */
94 for (i
= 0; i
< MC_CMD_NUM_OF_PARAMS
; i
++)
95 writeq(cmd
->params
[i
], &portal
->params
[i
]);
97 /* submit the command by writing the header */
98 writeq(cmd
->header
, &portal
->header
);
102 * mc_read_response - reads the response for the last MC command from a
103 * Management Complex (MC) portal
105 * @portal: pointer to an MC portal
106 * @resp: pointer to command response buffer
108 * Returns MC_CMD_STATUS_OK on Success; Error code otherwise.
110 static inline enum mc_cmd_status
mc_read_response(
111 struct mc_command __iomem
*portal
,
112 struct mc_command
*resp
)
115 enum mc_cmd_status status
;
117 /* Copy command response header from MC portal: */
118 resp
->header
= readq(&portal
->header
);
119 status
= MC_CMD_HDR_READ_STATUS(resp
->header
);
120 if (status
!= MC_CMD_STATUS_OK
)
123 /* Copy command response data from MC portal: */
124 for (i
= 0; i
< MC_CMD_NUM_OF_PARAMS
; i
++)
125 resp
->params
[i
] = readq(&portal
->params
[i
]);
130 int mc_send_command(struct fsl_mc_io
*mc_io
, struct mc_command
*cmd
);
132 #endif /* __FSL_MC_CMD_H */