711873d44f
code. o Use NULL in preference to 0 for a few pointers. o default to bus timing normal, like we default to bus_width_1.
441 lines
14 KiB
C
441 lines
14 KiB
C
/*-
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* Copyright (c) 2006 M. Warner Losh. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Portions of this software may have been developed with reference to
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* the SD Simplified Specification. The following disclaimer may apply:
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*
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* The following conditions apply to the release of the simplified
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* specification ("Simplified Specification") by the SD Card Association and
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* the SD Group. The Simplified Specification is a subset of the complete SD
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* Specification which is owned by the SD Card Association and the SD
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* Group. This Simplified Specification is provided on a non-confidential
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* basis subject to the disclaimers below. Any implementation of the
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* Simplified Specification may require a license from the SD Card
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* Association, SD Group, SD-3C LLC or other third parties.
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*
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* Disclaimers:
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*
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* The information contained in the Simplified Specification is presented only
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* as a standard specification for SD Cards and SD Host/Ancillary products and
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* is provided "AS-IS" without any representations or warranties of any
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* kind. No responsibility is assumed by the SD Group, SD-3C LLC or the SD
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* Card Association for any damages, any infringements of patents or other
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* right of the SD Group, SD-3C LLC, the SD Card Association or any third
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* parties, which may result from its use. No license is granted by
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* implication, estoppel or otherwise under any patent or other rights of the
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* SD Group, SD-3C LLC, the SD Card Association or any third party. Nothing
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* herein shall be construed as an obligation by the SD Group, the SD-3C LLC
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* or the SD Card Association to disclose or distribute any technical
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* information, know-how or other confidential information to any third party.
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*
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* $FreeBSD$
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*/
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#ifndef DEV_MMC_MMCREG_H
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#define DEV_MMC_MMCREG_H
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/*
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* This file contains the register definitions for the mmc and sd busses.
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* They are taken from publicly available sources.
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*/
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struct mmc_data;
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struct mmc_request;
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struct mmc_command {
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uint32_t opcode;
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uint32_t arg;
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uint32_t resp[4];
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uint32_t flags; /* Expected responses */
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#define MMC_RSP_PRESENT (1ul << 0) /* Response */
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#define MMC_RSP_136 (1ul << 1) /* 136 bit response */
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#define MMC_RSP_CRC (1ul << 2) /* Expect valid crc */
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#define MMC_RSP_BUSY (1ul << 3) /* Card may send busy */
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#define MMC_RSP_OPCODE (1ul << 4) /* Response include opcode */
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#define MMC_RSP_MASK 0x1ful
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#define MMC_CMD_AC (0ul << 5) /* Addressed Command, no data */
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#define MMC_CMD_ADTC (1ul << 5) /* Addressed Data transfer cmd */
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#define MMC_CMD_BC (2ul << 5) /* Broadcast command, no response */
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#define MMC_CMD_BCR (3ul << 5) /* Broadcast command with response */
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#define MMC_CMD_MASK (3ul << 5)
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/* Possible response types defined in the standard: */
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#define MMC_RSP_NONE (0)
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#define MMC_RSP_R1 (MMC_RSP_PRESENT | MMC_RSP_CRC | MMC_RSP_OPCODE)
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#define MMC_RSP_R1B (MMC_RSP_PRESENT | MMC_RSP_CRC | MMC_RSP_OPCODE | MMC_RSP_BUSY)
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#define MMC_RSP_R2 (MMC_RSP_PRESENT | MMC_RSP_136 | MMC_RSP_CRC)
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#define MMC_RSP_R3 (MMC_RSP_PRESENT)
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#define MMC_RSP_R6 (MMC_RSP_PRESENT | MMC_RSP_CRC)
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#define MMC_RSP_R7 (MMC_RSP_PRESENT | MMC_RSP_CRC)
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#define MMC_RSP(x) ((x) & MMC_RSP_MASK)
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uint32_t retries;
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uint32_t error;
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#define MMC_ERR_NONE 0
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#define MMC_ERR_TIMEOUT 1
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#define MMC_ERR_BADCRC 2
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#define MMC_ERR_FIFO 3
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#define MMC_ERR_FAILED 4
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#define MMC_ERR_INVALID 5
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#define MMC_ERR_NO_MEMORY 6
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#define MMC_ERR_MAX 6
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struct mmc_data *data; /* Data segment with cmd */
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struct mmc_request *mrq; /* backpointer to request */
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};
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/*
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* R1 responses
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*
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* Types (per SD 2.0 standard)
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* e : error bit
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* s : status bit
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* r : detected and set for the actual command response
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* x : Detected and set during command execution. The host can get
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* the status by issuing a command with R1 response.
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*
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* Clear Condition (per SD 2.0 standard)
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* a : according to the card current state.
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* b : always related to the previous command. reception of a valid
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* command will clear it (with a delay of one command).
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* c : clear by read
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*/
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#define R1_OUT_OF_RANGE (1u << 31) /* erx, c */
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#define R1_ADDRESS_ERROR (1u << 30) /* erx, c */
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#define R1_BLOCK_LEN_ERROR (1u << 29) /* erx, c */
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#define R1_ERASE_SEQ_ERROR (1u << 28) /* er, c */
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#define R1_ERASE_PARAM (1u << 27) /* erx, c */
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#define R1_WP_VIOLATION (1u << 26) /* erx, c */
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#define R1_CARD_IS_LOCKED (1u << 25) /* sx, a */
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#define R1_LOCK_UNLOCK_FAILED (1u << 24) /* erx, c */
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#define R1_COM_CRC_ERROR (1u << 23) /* er, b */
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#define R1_ILLEGAL_COMMAND (1u << 22) /* er, b */
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#define R1_CARD_ECC_FAILED (1u << 21) /* erx, c */
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#define R1_CC_ERROR (1u << 20) /* erx, c */
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#define R1_ERROR (1u << 19) /* erx, c */
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#define R1_CSD_OVERWRITE (1u << 16) /* erx, c */
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#define R1_WP_ERASE_SKIP (1u << 15) /* erx, c */
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#define R1_CARD_ECC_DISABLED (1u << 14) /* sx, a */
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#define R1_ERASE_RESET (1u << 13) /* sr, c */
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#define R1_CURRENT_STATE_MASK (0xfu << 9) /* sx, b */
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#define R1_READY_FOR_DATA (1u << 8) /* sx, a */
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#define R1_APP_CMD (1u << 5) /* sr, c */
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#define R1_AKE_SEQ_ERROR (1u << 3) /* er, c */
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#define R1_STATUS(x) (x & 0xFFFFE000
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#define R1_CURRENT_STATE(x) ((x) & R1_CURRENT_STATE_MASK) >> 9
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#define R1_STATE_IDLE 0
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#define R1_STATE_READY 1
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#define R1_STATE_IDENT 2
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#define R1_STATE_STBY 3
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#define R1_STATE_TRAN 4
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#define R1_STATE_DATA 5
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#define R1_STATE_RCV 6
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#define R1_STATE_PRG 7
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#define R1_STATE_DIS 8
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struct mmc_data {
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size_t len; /* size of the data */
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size_t xfer_len;
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void *data; /* data buffer */
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uint32_t flags;
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#define MMC_DATA_WRITE (1UL << 0)
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#define MMC_DATA_READ (1UL << 1)
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#define MMC_DATA_STREAM (1UL << 2)
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#define MMC_DATA_MULTI (1UL << 3)
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struct mmc_request *mrq;
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};
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struct mmc_request {
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struct mmc_command *cmd;
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struct mmc_command *stop;
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void (*done)(struct mmc_request *); /* Completion function */
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void *done_data; /* requestor set data */
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uint32_t flags;
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#define MMC_REQ_DONE 1
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};
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/* Command definitions */
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/* Class 0 and 1: Basic commands & read stream commands */
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#define MMC_GO_IDLE_STATE 0
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#define MMC_SEND_OP_COND 1
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#define MMC_ALL_SEND_CID 2
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#define MMC_SET_RELATIVE_ADDR 3
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#define SD_SEND_RELATIVE_ADDR 3
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#define MMC_SET_DSR 4
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/* reserved: 5 */
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#define MMC_SWITCH_FUNC 6
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#define MMC_SWITCH_FUNC_CMDS 0
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#define MMC_SWITCH_FUNC_SET 1
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#define MMC_SWITCH_FUNC_CLR 2
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#define MMC_SWITCH_FUNC_WR 3
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#define MMC_SELECT_CARD 7
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#define MMC_DESELECT_CARD 7
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#define MMC_SEND_EXT_CSD 8
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#define SD_SEND_IF_COND 8
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#define MMC_SEND_CSD 9
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#define MMC_SEND_CID 10
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#define MMC_READ_DAT_UNTIL_STOP 11
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#define MMC_STOP_TRANSMISSION 12
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#define MMC_SEND_STATUS 13
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#define MMC_BUSTEST_R 14
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#define MMC_GO_INACTIVE_STATE 15
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#define MMC_BUSTEST_W 19
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/* Class 2: Block oriented read commands */
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#define MMC_SET_BLOCKLEN 16
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#define MMC_READ_SINGLE_BLOCK 17
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#define MMC_READ_MULTIPLE_BLOCK 18
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/* reserved: 19 */
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/* Class 3: Stream write commands */
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#define MMC_WRITE_DAT_UNTIL_STOP 20
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/* reserved: 21 */
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/* reserved: 22 */
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/* Class 4: Block oriented write commands */
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#define MMC_SET_BLOCK_COUNT 23
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#define MMC_WRITE_BLOCK 24
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#define MMC_WRITE_MULTIPLE_BLOCK 25
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#define MMC_PROGARM_CID 26
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#define MMC_PROGRAM_CSD 27
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/* Class 6: Block oriented write protection commands */
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#define MMC_SET_WRITE_PROT 28
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#define MMC_CLR_WRITE_PROT 29
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#define MMC_SEND_WRITE_PROT 30
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/* reserved: 31 */
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/* Class 5: Erase commands */
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#define SD_ERASE_WR_BLK_START 32
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#define SD_ERASE_WR_BLK_END 33
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/* 34 -- reserved old command */
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#define MMC_ERASE_GROUP_START 35
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#define MMC_ERASE_GROUP_END 36
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/* 37 -- reserved old command */
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#define MMC_ERASE 38
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/* Class 9: I/O mode commands */
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#define MMC_FAST_IO 39
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#define MMC_GO_IRQ_STATE 40
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/* reserved: 41 */
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/* Class 7: Lock card */
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#define MMC_LOCK_UNLOCK 42
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/* reserved: 43 */
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/* reserved: 44 */
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/* reserved: 45 */
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/* reserved: 46 */
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/* reserved: 47 */
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/* reserved: 48 */
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/* reserved: 49 */
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/* reserved: 50 */
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/* reserved: 51 */
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/* reserved: 54 */
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/* Class 8: Application specific commands */
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#define MMC_APP_CMD 55
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#define MMC_GEN_CMD 56
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/* reserved: 57 */
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/* reserved: 58 */
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/* reserved: 59 */
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/* reserved for mfg: 60 */
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/* reserved for mfg: 61 */
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/* reserved for mfg: 62 */
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/* reserved for mfg: 63 */
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/* Class 9: I/O cards (sd) */
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#define SD_IO_RW_DIRECT 52
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#define SD_IO_RW_EXTENDED 53
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/* Class 10: Switch function commands */
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#define SD_SWITCH_FUNC 6
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/* reserved: 34 */
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/* reserved: 35 */
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/* reserved: 36 */
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/* reserved: 37 */
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/* reserved: 50 */
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/* reserved: 57 */
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/* Application specific commands for SD */
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#define ACMD_SET_BUS_WIDTH 6
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#define ACMD_SD_STATUS 13
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#define ACMD_SEND_NUM_WR_BLOCKS 22
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#define ACMD_SET_WR_BLK_ERASE_COUNT 23
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#define ACMD_SD_SEND_OP_COND 41
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#define ACMD_SET_CLR_CARD_DETECT 42
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#define ACMD_SEND_SCR 51
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/*
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* EXT_CSD fields
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*/
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#define EXT_CSD_ERASE_GRP_DEF 175 /* R/W */
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#define EXT_CSD_BUS_WIDTH 183 /* R/W */
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#define EXT_CSD_HS_TIMING 185 /* R/W */
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#define EXT_CSD_CARD_TYPE 196 /* RO */
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#define EXT_CSD_REV 192 /* RO */
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#define EXT_CSD_SEC_CNT 212 /* RO, 4 bytes */
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#define EXT_CSD_ERASE_TO_MULT 223 /* RO */
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#define EXT_CSD_ERASE_GRP_SIZE 224 /* RO */
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/*
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* EXT_CSD field definitions
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*/
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#define EXT_CSD_CMD_SET_NORMAL 1
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#define EXT_CSD_CMD_SET_SECURE 2
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#define EXT_CSD_CMD_SET_CPSECURE 4
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#define EXT_CSD_CARD_TYPE_26 1
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#define EXT_CSD_CARD_TYPE_52 2
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#define EXT_CSD_BUS_WIDTH_1 0
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#define EXT_CSD_BUS_WIDTH_4 1
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#define EXT_CSD_BUS_WIDTH_8 2
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#define MMC_TYPE_26_MAX_HS 26000000
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#define MMC_TYPE_52_MAX_HS 52000000
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/*
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* SD bus widths
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*/
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#define SD_BUS_WIDTH_1 0
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#define SD_BUS_WIDTH_4 2
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/*
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* SD Switch
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*/
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#define SD_SWITCH_MODE_CHECK 0
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#define SD_SWITCH_MODE_SET 1
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#define SD_SWITCH_GROUP1 0
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#define SD_SWITCH_NORMAL_MODE 0
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#define SD_SWITCH_HS_MODE 1
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#define SD_SWITCH_NOCHANGE 0xF
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#define SD_MAX_HS 50000000
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/* OCR bits */
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/*
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* in SD 2.0 spec, bits 8-14 are now marked reserved
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* Low voltage in SD2.0 spec is bit 7, TBD voltage
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* Low voltage in MC 3.31 spec is bit 7, 1.65-1.95V
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* Specs prior to MMC 3.31 defined bits 0-7 as voltages down to 1.5V.
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* 3.31 redefined them to be reserved and also said that cards had to
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* support the 2.7-3.6V and fixed the OCR to be 0xfff8000 for high voltage
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* cards. MMC 4.0 says that a dual voltage card responds with 0xfff8080.
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* Looks like the fine-grained control of the voltage tolerance ranges
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* was abandoned.
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*
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* The MMC_OCR_CCS appears to be valid for only SD cards.
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*/
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#define MMC_OCR_VOLTAGE 0x3fffffffU /* Vdd Voltage mask */
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#define MMC_OCR_LOW_VOLTAGE (1u << 7) /* Low Voltage Range -- tbd */
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#define MMC_OCR_200_210 (1U << 8) /* Vdd voltage 2.00 ~ 2.10 */
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#define MMC_OCR_210_220 (1U << 9) /* Vdd voltage 2.10 ~ 2.20 */
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#define MMC_OCR_220_230 (1U << 10) /* Vdd voltage 2.20 ~ 2.30 */
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#define MMC_OCR_230_240 (1U << 11) /* Vdd voltage 2.30 ~ 2.40 */
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#define MMC_OCR_240_250 (1U << 12) /* Vdd voltage 2.40 ~ 2.50 */
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#define MMC_OCR_250_260 (1U << 13) /* Vdd voltage 2.50 ~ 2.60 */
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#define MMC_OCR_260_270 (1U << 14) /* Vdd voltage 2.60 ~ 2.70 */
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#define MMC_OCR_270_280 (1U << 15) /* Vdd voltage 2.70 ~ 2.80 */
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#define MMC_OCR_280_290 (1U << 16) /* Vdd voltage 2.80 ~ 2.90 */
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#define MMC_OCR_290_300 (1U << 17) /* Vdd voltage 2.90 ~ 3.00 */
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#define MMC_OCR_300_310 (1U << 18) /* Vdd voltage 3.00 ~ 3.10 */
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#define MMC_OCR_310_320 (1U << 19) /* Vdd voltage 3.10 ~ 3.20 */
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#define MMC_OCR_320_330 (1U << 20) /* Vdd voltage 3.20 ~ 3.30 */
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#define MMC_OCR_330_340 (1U << 21) /* Vdd voltage 3.30 ~ 3.40 */
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#define MMC_OCR_340_350 (1U << 22) /* Vdd voltage 3.40 ~ 3.50 */
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#define MMC_OCR_350_360 (1U << 23) /* Vdd voltage 3.50 ~ 3.60 */
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#define MMC_OCR_CCS (1u << 30) /* Card Capacity status (SD vs SDHC) */
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#define MMC_OCR_CARD_BUSY (1U << 31) /* Card Power up status */
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/* CSD -- decoded structure */
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struct mmc_cid {
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uint32_t mid;
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char pnm[8];
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uint32_t psn;
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uint16_t oid;
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uint16_t mdt_year;
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uint8_t mdt_month;
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uint8_t prv;
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uint8_t fwrev;
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};
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struct mmc_csd
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{
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uint8_t csd_structure;
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uint8_t spec_vers;
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uint16_t ccc;
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uint16_t tacc;
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uint32_t nsac;
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uint32_t r2w_factor;
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uint32_t tran_speed;
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uint32_t read_bl_len;
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uint32_t write_bl_len;
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uint32_t vdd_r_curr_min;
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uint32_t vdd_r_curr_max;
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uint32_t vdd_w_curr_min;
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uint32_t vdd_w_curr_max;
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uint32_t wp_grp_size;
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uint32_t erase_sector;
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uint64_t capacity;
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unsigned int read_bl_partial:1,
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read_blk_misalign:1,
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write_bl_partial:1,
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write_blk_misalign:1,
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dsr_imp:1,
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erase_blk_en:1,
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wp_grp_enable:1;
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};
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struct mmc_scr
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{
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unsigned char sda_vsn;
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unsigned char bus_widths;
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#define SD_SCR_BUS_WIDTH_1 (1<<0)
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#define SD_SCR_BUS_WIDTH_4 (1<<2)
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};
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struct mmc_sd_status
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{
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uint8_t bus_width;
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uint8_t secured_mode;
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uint16_t card_type;
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uint16_t prot_area;
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uint8_t speed_class;
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uint8_t perf_move;
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uint8_t au_size;
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uint16_t erase_size;
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uint8_t erase_timeout;
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uint8_t erase_offset;
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};
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/*
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* Older versions of the MMC standard had a variable sector size. However,
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* I've been able to find no old MMC or SD cards that have a non 512
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* byte sector size anywhere, so we assume that such cards are very rare
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* and only note their existance in passing here...
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*/
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#define MMC_SECTOR_SIZE 512
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#endif /* DEV_MMCREG_H */
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