release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/staging/spectra/lld_cdma.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 /* header for LLD_CDMA.c module */
  21
  22 #ifndef _LLD_CDMA_
  23 #define _LLD_CDMA_
  24
  25 #include "flash.h"
  26
  27 #define  DEBUG_SYNC    1
  28
  29 /*///////////   CDMA specific MACRO definition */
  30 #define MAX_DESCS         (255)
  31 #define MAX_CHANS  (4)
  32 #define MAX_SYNC_POINTS         (16)
  33 #define MAX_DESC_PER_CHAN     (MAX_DESCS * 3 + MAX_SYNC_POINTS + 2)
  34
  35 #define CHANNEL_SYNC_MASK       (0x000F)
  36 #define CHANNEL_DMA_MASK        (0x00F0)
  37 #define CHANNEL_ID_MASK         (0x0300)
  38 #define CHANNEL_CONT_MASK       (0x4000)
  39 #define CHANNEL_INTR_MASK       (0x8000)
  40
  41 #define CHANNEL_SYNC_OFFSET     (0)
  42 #define CHANNEL_DMA_OFFSET      (4)
  43 #define CHANNEL_ID_OFFSET       (8)
  44 #define CHANNEL_CONT_OFFSET     (14)
  45 #define CHANNEL_INTR_OFFSET     (15)
  46
  47 u16 CDMA_Data_CMD(u8 cmd, u8 *data, u32 block, u16 page, u16 num, u16 flags);
  48 u16 CDMA_MemCopy_CMD(u8 *dest, u8 *src, u32 byte_cnt, u16 flags);
  49 u16 CDMA_Execute_CMDs(void);
  50 void print_pending_cmds(void);
  51 void print_cdma_descriptors(void);
  52
  53 extern u8 g_SBDCmdIndex;
  54 extern struct mrst_nand_info info;
  55
  56
  57 /*///////////   prototypes: APIs for LLD_CDMA */
  58 int is_cdma_interrupt(void);
  59 u16 CDMA_Event_Status(void);
  60
  61 /* CMD-DMA Descriptor Struct.  These are defined by the CMD_DMA HW */
  62 struct cdma_descriptor {
  63         u32 NxtPointerHi;
  64         u32 NxtPointerLo;
  65         u32 FlashPointerHi;
  66         u32 FlashPointerLo;
  67         u32 CommandType;
  68         u32 MemAddrHi;
  69         u32 MemAddrLo;
  70         u32 CommandFlags;
  71         u32 Channel;
  72         u32 Status;
  73         u32 MemCopyPointerHi;
  74         u32 MemCopyPointerLo;
  75         u32 Reserved12;
  76         u32 Reserved13;
  77         u32 Reserved14;
  78         u32 pcmd; /* pending cmd num related to this descriptor */
  79 };
  80
  81 /* This struct holds one MemCopy descriptor as defined by the HW */
  82 struct memcpy_descriptor {
  83         u32 NxtPointerHi;
  84         u32 NxtPointerLo;
  85         u32 SrcAddrHi;
  86         u32 SrcAddrLo;
  87         u32 DestAddrHi;
  88         u32 DestAddrLo;
  89         u32 XferSize;
  90         u32 MemCopyFlags;
  91         u32 MemCopyStatus;
  92         u32 reserved9;
  93         u32 reserved10;
  94         u32 reserved11;
  95         u32 reserved12;
  96         u32 reserved13;
  97         u32 reserved14;
  98         u32 reserved15;
  99 };
 100
 101 /* Pending CMD table entries (includes MemCopy parameters */
 102 struct pending_cmd {
 103         u8 CMD;
 104         u8 *DataAddr;
 105         u32 Block;
 106         u16 Page;
 107         u16 PageCount;
 108         u8 *DataDestAddr;
 109         u8 *DataSrcAddr;
 110         u32 MemCopyByteCnt;
 111         u16 Flags;
 112         u16 Status;
 113 };
 114
 115 #if DEBUG_SYNC
 116 extern u32 debug_sync_cnt;
 117 #endif
 118
 119 /* Definitions for CMD DMA descriptor chain fields */
 120 #define     CMD_DMA_DESC_COMP   0x8000
 121 #define     CMD_DMA_DESC_FAIL   0x4000
 122
 123 #endif /*_LLD_CDMA_*/