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![David Woodhouse](/assets/img/avatar_default.png)
It'll take some work before this is really shippable. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
123 lines
3.1 KiB
C
123 lines
3.1 KiB
C
/*
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* NAND Flash Controller Device Driver
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* Copyright (c) 2009, Intel Corporation and its suppliers.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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/* header for LLD_CDMA.c module */
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#ifndef _LLD_CDMA_
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#define _LLD_CDMA_
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#include "flash.h"
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#define DEBUG_SYNC 1
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/*/////////// CDMA specific MACRO definition */
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#define MAX_DESCS (255)
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#define MAX_CHANS (4)
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#define MAX_SYNC_POINTS (16)
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#define MAX_DESC_PER_CHAN (MAX_DESCS * 3 + MAX_SYNC_POINTS + 2)
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#define CHANNEL_SYNC_MASK (0x000F)
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#define CHANNEL_DMA_MASK (0x00F0)
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#define CHANNEL_ID_MASK (0x0300)
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#define CHANNEL_CONT_MASK (0x4000)
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#define CHANNEL_INTR_MASK (0x8000)
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#define CHANNEL_SYNC_OFFSET (0)
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#define CHANNEL_DMA_OFFSET (4)
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#define CHANNEL_ID_OFFSET (8)
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#define CHANNEL_CONT_OFFSET (14)
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#define CHANNEL_INTR_OFFSET (15)
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u16 CDMA_Data_CMD(u8 cmd, u8 *data, u32 block, u16 page, u16 num, u16 flags);
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u16 CDMA_MemCopy_CMD(u8 *dest, u8 *src, u32 byte_cnt, u16 flags);
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u16 CDMA_Execute_CMDs(void);
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void print_pending_cmds(void);
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void print_cdma_descriptors(void);
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extern u8 g_SBDCmdIndex;
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extern struct mrst_nand_info info;
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/*/////////// prototypes: APIs for LLD_CDMA */
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int is_cdma_interrupt(void);
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u16 CDMA_Event_Status(void);
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/* CMD-DMA Descriptor Struct. These are defined by the CMD_DMA HW */
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struct cdma_descriptor {
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u32 NxtPointerHi;
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u32 NxtPointerLo;
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u32 FlashPointerHi;
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u32 FlashPointerLo;
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u32 CommandType;
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u32 MemAddrHi;
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u32 MemAddrLo;
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u32 CommandFlags;
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u32 Channel;
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u32 Status;
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u32 MemCopyPointerHi;
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u32 MemCopyPointerLo;
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u32 Reserved12;
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u32 Reserved13;
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u32 Reserved14;
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u32 pcmd; /* pending cmd num related to this descriptor */
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};
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/* This struct holds one MemCopy descriptor as defined by the HW */
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struct memcpy_descriptor {
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u32 NxtPointerHi;
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u32 NxtPointerLo;
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u32 SrcAddrHi;
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u32 SrcAddrLo;
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u32 DestAddrHi;
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u32 DestAddrLo;
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u32 XferSize;
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u32 MemCopyFlags;
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u32 MemCopyStatus;
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u32 reserved9;
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u32 reserved10;
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u32 reserved11;
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u32 reserved12;
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u32 reserved13;
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u32 reserved14;
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u32 reserved15;
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};
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/* Pending CMD table entries (includes MemCopy parameters */
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struct pending_cmd {
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u8 CMD;
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u8 *DataAddr;
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u32 Block;
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u16 Page;
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u16 PageCount;
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u8 *DataDestAddr;
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u8 *DataSrcAddr;
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u32 MemCopyByteCnt;
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u16 Flags;
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u16 Status;
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};
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#if DEBUG_SYNC
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extern u32 debug_sync_cnt;
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#endif
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/* Definitions for CMD DMA descriptor chain fields */
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#define CMD_DMA_DESC_COMP 0x8000
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#define CMD_DMA_DESC_FAIL 0x4000
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#endif /*_LLD_CDMA_*/
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