//-----------------------------------------------------------------------------
// File:      globals.c
// Contents:   contains all the global variables used by the firmware
//
// Format:  indent 3.  NO TABS!
//
//--------------------------------------------------------------------------
// $Archive: /USB/atapifx2/NX2LP/SRC/CY3686FW/globals.c $
// $Modtime: 8/08/05 10:01a $
// $Revision: 1 $
//--------------------------------------------------------------------------
//
// Copyright 2005, Cypress Semiconductor Corporation.
//
// This software is owned by Cypress Semiconductor Corporation (Cypress)
// and is protected by and subject to worldwide patent protection (United
// States and foreign), United States copyright laws and international 
// treaty provisions. Cypress hereby grants to licensee a personal, 
// non-exclusive, non-transferable license to copy, use, modify, create 
// derivative works of, and compile the Cypress Source Code and derivative 
// works for the sole purpose of creating custom software in support of 
// licensee product to be used only in conjunction with a Cypress integrated 
// circuit as specified in the applicable agreement. Any reproduction, 
// modification, translation, compilation, or representation of this 
// software except as specified above is prohibited without the express 
// written permission of Cypress.
//
// Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND,EXPRESS OR IMPLIED, 
// WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
// Cypress reserves the right to make changes without further notice to the
// materials described herein. Cypress does not assume any liability arising
// out of the application or use of any product or circuit described herein.
// Cypress does not authorize its products for use as critical components in
// life-support systems where a malfunction or failure may reasonably be
// expected to result in significant injury to the user. The inclusion of
// Cypress' product in a life-support systems application implies that the
// manufacturer assumes all risk of such use and in doing so indemnifies
// Cypress against all charges.
//
// Use may be limited by and subject to the applicable Cypress software
// license agreement.
//
//--------------------------------------------------------------------------

#include "globals.h"

BYTE   AlternateSetting;   // Alternate settings
BYTE   Configuration;      // Current configuration


WORD wPacketSize;
xdata volatile BYTE halfKBuffer[BUFFER_SIZE] _at_ 0xE000;
// Content of halfKBuffer:
// 0x000 - 0x100: copy of the dscr.a51
// 0x100 - 0x11F: SCSI Inquiry string
// 0x120 - 0x14F: USB String Descriptor-Index 0
// 0x150 - 0x17F: USB String Descriptor-Manufacturer - Index 1
// 0x180 - 0x1AF: USB String Descriptor-Product - Index 2
// 0x1B0 - 0x1DF: USB String Descriptor-Serial Number - Index 3
// 0x1E0 - 0x1FF: Reserved area for debug

WORD cbwTagLow;          // Tag from the most recent CBW packet
WORD cbwTagHi;

DWORD dataTransferLen;

bit currentState;
bit directionIn;
bit phaseErrorState;
bit bShortPacketSent;
bit Sleep;
#ifdef USE_2LUN
bit bLUN1;
#endif


DWORD bdata dwLBA;         // This is global to help the optimizer
sbit  bLBA0 = dwLBA ^ 24;  // bit0 of dwLBA

BYTE bdata NandCfg;     // bit0=cache read, bit1=prog cache, bit2=30ns/50ns
BYTE bdata FwCfg;       // bit0=WriteProtec, bit1=ECC enable
sbit b30nsCycle          = NandCfg ^ 2;
sbit bInternalMove       = NandCfg ^ 4;
sbit bSoftErr            = NandCfg ^ 5;

sbit bWriteProtectEnable = FwCfg ^ 0;
sbit bECCEnable          = FwCfg ^ 1;
sbit bInterLeave         = FwCfg ^ 2;
sbit bMsk                = FwCfg ^ 7;

// the bit global variables
BYTE bdata gNandBits;
sbit bNeedErase          = gNandBits ^ 0;
sbit bCnt                = gNandBits ^ 1;
sbit bReload             = gNandBits ^ 2;        
sbit bFreeFound          = gNandBits ^ 3;
sbit bEject              = gNandBits ^ 4;
sbit b2BitErr            = gNandBits ^ 5;
sbit bErr                = gNandBits ^ 6;
sbit bFreeBlk            = gNandBits ^ 7;


/////////////////////////////////////////////////////////////////////////////////////////
// NAND flash definitions
// 
// gBank -- Represents a physical NAND chip select.  A physical NAND package may have one or two
//          chip selects, therefore, one or two banks.  
// gCurZone -- Largest structure within the flash.  Each zone contains 1024 physical blocks
//             and 1000 logical blocks.
// gZones   -- Total number of Zones in a NAND Flash
// 
// gLog2Phy -- Table that maps the LBA received from the host into a physical address in the NAND.
//          This table contains the physical address.  It is indexed by the LBA.
//          A value of FFFF means that the LBA does not have a physical address yet.
//          This table is stored in the redundant area of the flash, one LBA per block.
/////////////////////////////////////////////////////////////////////////////////////////
//
// 128KByte flash chips with 512 byte pages have 
//       512 bytes per page, 32 pages per block for 16K blocks * 8 zones
// 2K pages have
//       2K bytes/page, 64 pages/block for 64K blocks * 2 zones
// 
//                          Zone = 1024 blocks (1000 LBAs)
//         /---------/---------/---------/---------/---------/---------/|
//        /---------/---------/---------/---------/---------/---------/||
//       /---------/---------/---------/---------/---------/---------/|||
//      |---------|---------|---------|---------|---------|---------|||||
//      |         |         |         |         |         |         ||||/              
// Block| Page    | Page    | Page    | Page    | Page    | Page    |||/               
//      |         |         |         |         |         |         ||/       
//      |---------|---------|---------|---------|---------|---------|/
//

DWORD gDriveCapacity;
WORD  gSectorcount;
BYTE  gBank;                    // nand bank
bit   bWPSwitchState;           // Used to detect changes in the WP switch state
bit   bNand2k;