LXR linux/include/linux/mtd/qinfo.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __LINUX_MTD_QINFO_H
   3#define __LINUX_MTD_QINFO_H
   4
   5#include <linux/mtd/map.h>
   6#include <linux/wait.h>
   7#include <linux/spinlock.h>
   8#include <linux/delay.h>
   9#include <linux/mtd/mtd.h>
  10#include <linux/mtd/flashchip.h>
  11#include <linux/mtd/partitions.h>
  12
  13/* lpddr_private describes lpddr flash chip in memory map
  14 * @ManufactId - Chip Manufacture ID
  15 * @DevId - Chip Device ID
  16 * @qinfo - pointer to qinfo records describing the chip
  17 * @numchips - number of chips including virual RWW partitions
  18 * @chipshift - Chip/partition size 2^chipshift
  19 * @chips - per-chip data structure
  20 */
  21struct lpddr_private {
  22        uint16_t ManufactId;
  23        uint16_t DevId;
  24        struct qinfo_chip *qinfo;
  25        int numchips;
  26        unsigned long chipshift;
  27        struct flchip chips[];
  28};
  29
  30/* qinfo_query_info structure contains request information for
  31 * each qinfo record
  32 * @major - major number of qinfo record
  33 * @major - minor number of qinfo record
  34 * @id_str - descriptive string to access the record
  35 * @desc - detailed description for the qinfo record
  36 */
  37struct qinfo_query_info {
  38        uint8_t major;
  39        uint8_t minor;
  40        char *id_str;
  41        char *desc;
  42};
  43
  44/*
  45 * qinfo_chip structure contains necessary qinfo records data
  46 * @DevSizeShift - Device size 2^n bytes
  47 * @BufSizeShift - Program buffer size 2^n bytes
  48 * @TotalBlocksNum - Total number of blocks
  49 * @UniformBlockSizeShift - Uniform block size 2^UniformBlockSizeShift bytes
  50 * @HWPartsNum - Number of hardware partitions
  51 * @SuspEraseSupp - Suspend erase supported
  52 * @SingleWordProgTime - Single word program 2^SingleWordProgTime u-sec
  53 * @ProgBufferTime - Program buffer write 2^ProgBufferTime u-sec
  54 * @BlockEraseTime - Block erase 2^BlockEraseTime m-sec
  55 */
  56struct qinfo_chip {
  57        /* General device info */
  58        uint16_t DevSizeShift;
  59        uint16_t BufSizeShift;
  60        /* Erase block information */
  61        uint16_t TotalBlocksNum;
  62        uint16_t UniformBlockSizeShift;
  63        /* Partition information */
  64        uint16_t HWPartsNum;
  65        /* Optional features */
  66        uint16_t SuspEraseSupp;
  67        /* Operation typical time */
  68        uint16_t SingleWordProgTime;
  69        uint16_t ProgBufferTime;
  70        uint16_t BlockEraseTime;
  71};
  72
  73/* defines for fixup usage */
  74#define LPDDR_MFR_ANY           0xffff
  75#define LPDDR_ID_ANY            0xffff
  76#define NUMONYX_MFGR_ID         0x0089
  77#define R18_DEVICE_ID_1G        0x893c
  78
  79static inline map_word lpddr_build_cmd(u_long cmd, struct map_info *map)
  80{
  81        map_word val = { {0} };
  82        val.x[0] = cmd;
  83        return val;
  84}
  85
  86#define CMD(x) lpddr_build_cmd(x, map)
  87#define CMDVAL(cmd) cmd.x[0]
  88
  89struct mtd_info *lpddr_cmdset(struct map_info *);
  90
  91#endif
  92
  93