release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/staging/spectra/flash.h

   1 /*
   2  * NAND Flash Controller Device Driver
   3  * Copyright (c) 2009, Intel Corporation and its suppliers.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  17  *
  18  */
  19
  20 #ifndef _FLASH_INTERFACE_
  21 #define _FLASH_INTERFACE_
  22
  23 #include "ffsport.h"
  24 #include "spectraswconfig.h"
  25
  26 #define MAX_BYTE_VALUE        0xFF
  27 #define MAX_WORD_VALUE        0xFFFF
  28 #define MAX_U32_VALUE        0xFFFFFFFF
  29
  30 #define MAX_BLOCKNODE_VALUE     0xFFFFFF
  31 #define DISCARD_BLOCK           0x800000
  32 #define SPARE_BLOCK             0x400000
  33 #define BAD_BLOCK               0xC00000
  34
  35 #define UNHIT_CACHE_ITEM         0xFFFF
  36
  37 #define NAND_CACHE_INIT_ADDR    0xffffffffffffffffULL
  38
  39 #define IN_PROGRESS_BLOCK_TABLE   0x00
  40 #define CURRENT_BLOCK_TABLE       0x01
  41
  42 #define BTSIG_OFFSET   (0)
  43 #define BTSIG_BYTES    (5)
  44 #define BTSIG_DELTA    (3)
  45
  46 #define MAX_READ_COUNTER  0x2710
  47
  48 #define FIRST_BT_ID             (1)
  49 #define LAST_BT_ID    (254)
  50 #define BTBLOCK_INVAL  (u32)(0xFFFFFFFF)
  51
  52 struct device_info_tag {
  53         u16 wDeviceMaker;
  54         u16 wDeviceID;
  55         u32 wDeviceType;
  56         u32 wSpectraStartBlock;
  57         u32 wSpectraEndBlock;
  58         u32 wTotalBlocks;
  59         u16 wPagesPerBlock;
  60         u16 wPageSize;
  61         u16 wPageDataSize;
  62         u16 wPageSpareSize;
  63         u16 wNumPageSpareFlag;
  64         u16 wECCBytesPerSector;
  65         u32 wBlockSize;
  66         u32 wBlockDataSize;
  67         u32 wDataBlockNum;
  68         u8 bPlaneNum;
  69         u16 wDeviceMainAreaSize;
  70         u16 wDeviceSpareAreaSize;
  71         u16 wDevicesConnected;
  72         u16 wDeviceWidth;
  73         u16 wHWRevision;
  74         u16 wHWFeatures;
  75
  76         u16 wONFIDevFeatures;
  77         u16 wONFIOptCommands;
  78         u16 wONFITimingMode;
  79         u16 wONFIPgmCacheTimingMode;
  80
  81         u16 MLCDevice;
  82         u16 wSpareSkipBytes;
  83
  84         u8 nBitsInPageNumber;
  85         u8 nBitsInPageDataSize;
  86         u8 nBitsInBlockDataSize;
  87 };
  88
  89 extern struct device_info_tag DeviceInfo;
  90
  91 /* Cache item format */
  92 struct flash_cache_item_tag {
  93         u64 address;
  94         u16 use_cnt;
  95         u16 changed;
  96         u8 *buf;
  97 };
  98
  99 struct flash_cache_tag {
 100         u32 cache_item_size; /* Size in bytes of each cache item */
 101         u16 pages_per_item; /* How many NAND pages in each cache item */
 102         u16 LRU; /* No. of the least recently used cache item */
 103         struct flash_cache_item_tag array[CACHE_ITEM_NUM];
 104 };
 105
 106 /*
 107  *Data structure for each list node of the managment table
 108  * used for the Level 2 Cache. Each node maps one logical NAND block.
 109  */
 110 struct spectra_l2_cache_list {
 111         struct list_head list;
 112         u32 logical_blk_num; /* Logical block number */
 113         u32 pages_array[]; /* Page map array of this logical block.
 114                            * Array index is the logical block number,
 115                            * and for every item of this arry:
 116                            * high 16 bit is index of the L2 cache block num,
 117                            * low 16 bit is the phy page num
 118                            * of the above L2 cache block.
 119                            * This array will be kmalloc during run time.
 120                            */
 121 };
 122
 123 struct spectra_l2_cache_info {
 124         u32 blk_array[BLK_NUM_FOR_L2_CACHE];
 125         u16 cur_blk_idx; /* idx to the phy block number of current using */
 126         u16 cur_page_num; /* pages number of current using */
 127         struct spectra_l2_cache_list table; /* First node of the table */
 128 };
 129
 130 #define RESTORE_CACHE_ON_CDMA_CHAIN_FAILURE    1
 131
 132 #if RESTORE_CACHE_ON_CDMA_CHAIN_FAILURE
 133 struct flash_cache_mod_item_tag {
 134         u64 address;
 135         u8 changed;
 136 };
 137
 138 struct flash_cache_delta_list_tag {
 139         u8 item;  /* used cache item */
 140         struct flash_cache_mod_item_tag cache;
 141 };
 142 #endif
 143
 144 extern struct flash_cache_tag Cache;
 145
 146 extern u8 *buf_read_page_main_spare;
 147 extern u8 *buf_write_page_main_spare;
 148 extern u8 *buf_read_page_spare;
 149 extern u8 *buf_get_bad_block;
 150 extern u8 *cdma_desc_buf;
 151 extern u8 *memcp_desc_buf;
 152
 153 /* struture used for IndentfyDevice function */
 154 struct spectra_indentfy_dev_tag {
 155         u32 NumBlocks;
 156         u16 PagesPerBlock;
 157         u16 PageDataSize;
 158         u16 wECCBytesPerSector;
 159         u32 wDataBlockNum;
 160 };
 161
 162 int GLOB_FTL_Flash_Init(void);
 163 int GLOB_FTL_Flash_Release(void);
 164 /*void GLOB_FTL_Erase_Flash(void);*/
 165 int GLOB_FTL_Block_Erase(u64 block_addr);
 166 int GLOB_FTL_Is_BadBlock(u32 block_num);
 167 int GLOB_FTL_IdentifyDevice(struct spectra_indentfy_dev_tag *dev_data);
 168 int GLOB_FTL_Event_Status(int *);
 169 u16 glob_ftl_execute_cmds(void);
 170
 171 /*int FTL_Read_Disturbance(ADDRESSTYPE dwBlockAddr);*/
 172 int FTL_Read_Disturbance(u32 dwBlockAddr);
 173
 174 /*Flash r/w based on cache*/
 175 int GLOB_FTL_Page_Read(u8 *read_data, u64 page_addr);
 176 int GLOB_FTL_Page_Write(u8 *write_data, u64 page_addr);
 177 int GLOB_FTL_Wear_Leveling(void);
 178 int GLOB_FTL_Flash_Format(void);
 179 int GLOB_FTL_Init(void);
 180 int GLOB_FTL_Flush_Cache(void);
 181 int GLOB_FTL_Garbage_Collection(void);
 182 int GLOB_FTL_BT_Garbage_Collection(void);
 183 void GLOB_FTL_Cache_Release(void);
 184 u8 *get_blk_table_start_addr(void);
 185 u8 *get_wear_leveling_table_start_addr(void);
 186 unsigned long get_blk_table_len(void);
 187 unsigned long get_wear_leveling_table_len(void);
 188
 189 #if DEBUG_BNDRY
 190 void debug_boundary_lineno_error(int chnl, int limit, int no, int lineno,
 191                                 char *filename);
 192 #define debug_boundary_error(chnl, limit, no) debug_boundary_lineno_error(chnl,\
 193                                                 limit, no, __LINE__, __FILE__)
 194 #else
 195 #define debug_boundary_error(chnl, limit, no) ;
 196 #endif
 197
 198 #endif /*_FLASH_INTERFACE_*/