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/* 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 mc_enc(int lsoffset, int width, uint64_t val)
{
return (uint64_t)(((uint64_t)val & MAKE_UMASK64(width)) << lsoffset);
}
static inline uint64_t mc_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 */
};
/*
* MC command flags
*/
/* High priority flag */
#define MC_CMD_FLAG_PRI 0x00008000
/* No flags */
#define MC_CMD_NO_FLAGS 0x00000000
/* Command completion flag */
#define MC_CMD_FLAG_INTR_DIS 0x01000000
#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_FLAGS_O 0 /* Flags field offset */
#define MC_CMD_HDR_FLAGS_S 32 /* Flags field size*/
#define MC_CMD_HDR_FLAGS_MASK 0xFF00FF00 /* Command flags mask */
#define MC_CMD_HDR_READ_STATUS(_hdr) \
((enum mc_cmd_status)mc_dec((_hdr), \
MC_CMD_HDR_STATUS_O, MC_CMD_HDR_STATUS_S))
#define MC_CMD_HDR_READ_TOKEN(_hdr) \
((uint16_t)mc_dec((_hdr), MC_CMD_HDR_TOKEN_O, MC_CMD_HDR_TOKEN_S))
#define MC_EXT_OP(_ext, _param, _offset, _width, _type, _arg) \
((_ext)[_param] |= mc_enc((_offset), (_width), _arg))
#define MC_CMD_OP(_cmd, _param, _offset, _width, _type, _arg) \
((_cmd).params[_param] |= mc_enc((_offset), (_width), _arg))
#define MC_RSP_OP(_cmd, _param, _offset, _width, _type, _arg) \
(_arg = (_type)mc_dec(_cmd.params[_param], (_offset), (_width)))
static inline uint64_t mc_encode_cmd_header(uint16_t cmd_id,
uint32_t cmd_flags,
uint16_t token)
{
uint64_t hdr;
hdr = mc_enc(MC_CMD_HDR_CMDID_O, MC_CMD_HDR_CMDID_S, cmd_id);
hdr |= mc_enc(MC_CMD_HDR_FLAGS_O, MC_CMD_HDR_FLAGS_S,
(cmd_flags & MC_CMD_HDR_FLAGS_MASK));
hdr |= mc_enc(MC_CMD_HDR_TOKEN_O, MC_CMD_HDR_TOKEN_S, token);
hdr |= mc_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;
}
#endif /* __FSL_MC_CMD_H */
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