From 7b3bd9a7988a8b4c8ba22a52b4927e8e59819b12 Mon Sep 17 00:00:00 2001 From: "J. German Rivera" Date: Tue, 6 Jan 2015 13:19:02 -0800 Subject: drivers/mc: Migrated MC Flibs to 0.5.2 Upgrade Manage Complex (MC) flib API to 0.5.2. Rename directory fsl_mc to fsl-mc. Change the fsl-mc node in Linux device tree from "fsl,dprcr" to "fsl-mc". Print MC version info when appropriate. Signed-off-by: J. German Rivera Signed-off-by: Lijun Pan Reviewed-by: York Sun --- include/fsl-mc/fsl_mc_cmd.h | 132 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 132 insertions(+) create mode 100644 include/fsl-mc/fsl_mc_cmd.h (limited to 'include/fsl-mc/fsl_mc_cmd.h') diff --git a/include/fsl-mc/fsl_mc_cmd.h b/include/fsl-mc/fsl_mc_cmd.h new file mode 100644 index 0000000000..e7fcb5b142 --- /dev/null +++ b/include/fsl-mc/fsl_mc_cmd.h @@ -0,0 +1,132 @@ +/* Copyright 2014 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_AUTHID_O 38 /* Authentication ID field offset */ +#define MC_CMD_HDR_AUTHID_S 10 /* Authentication ID field size */ +#define MC_CMD_HDR_STATUS_O 16 /* Status field offset */ +#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_AUTHID(_hdr) \ + ((uint16_t)u64_dec((_hdr), MC_CMD_HDR_AUTHID_O, MC_CMD_HDR_AUTHID_S)) + +#define MC_CMD_PRI_LOW 0 /*!< Low Priority command indication */ +#define MC_CMD_PRI_HIGH 1 /*!< High Priority command indication */ + +#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 auth_id) +{ + uint64_t hdr; + + hdr = u64_enc(MC_CMD_HDR_CMDID_O, MC_CMD_HDR_CMDID_S, cmd_id); + hdr |= u64_enc(MC_CMD_HDR_AUTHID_O, MC_CMD_HDR_AUTHID_S, auth_id); + 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 */ -- cgit v1.2.1