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//****************************************************************************
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// Copyright (C) 2000-2004  ARW Elektronik Germany
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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// This product is not authorized for use as critical component in 
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// life support systems without the express written approval of 
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// ARW Elektronik Germany.
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//  
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// Please announce changes and hints to ARW Elektronik
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//
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// Maintainer(s): Klaus Hitschler (klaus.hitschler@gmx.de)
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//
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//****************************************************************************
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//****************************************************************************
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//
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// simpleTest.c -- a simple test program for the PCIVME PCI to VME Interface
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//
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// $Log: simpleTest.c,v $
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// Revision 1.4  2004/08/13 19:23:55  klaus
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// conversion to kernel-version 2.6, released version 3.0
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//
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// Revision 1.3  2002/10/17 19:05:03  klaus
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// VME access is working through test to lib to driver
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//
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// Revision 1.2  2002/10/12 22:12:19  klaus
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// simple change
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//
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// Revision 1.1.1.1  2002/10/09 19:36:29  klaus
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// initial import
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//
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//
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//****************************************************************************
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/*--- INCLUDES -----------------------------------------------------------------------------------*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <limits.h>  // rand()
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#include <string.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <linux/types.h>
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#include <errno.h>
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#include <ctype.h>
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#include <../driver/pcivme.h>
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#include <../lib/pcivme_ni.h>
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/*--- DEFINES ------------------------------------------------------------------------------------*/
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#define DEVICE_NAME   "/dev/vmemm_1"
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#define DEFAULT_WIDTH BYTE_ACCESS
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#define DEFAULT_MODIFIER 0x39 
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#define BUFFER_SIZE   0x10000            // local buffer for temporary use
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/*--- TYPEDEFS -----------------------------------------------------------------------------------*/
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/*--- GLOBALS ------------------------------------------------------------------------------------*/
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char *cszPrgName;
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/*--- FUNCTIONS ----------------------------------------------------------------------------------*/
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void hlpMsg(void)
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{
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    printf("simpleTest - a program to do a RAM test with help of the PCIVME interface of ARW Elektronik Germany.\n");
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    printf("Copyright: see the GPL of the free software foundation. K.Hitschler, %s.\n", __DATE__);
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    printf("usage: simpleTest [-d=DeviceName] -s=StartAddress [-l=Length] [-m=AddressModifier] [-w=AccessWidth] [-?]\n");
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    printf("                   -d - choose a device to use. (Default: %s)\n", DEVICE_NAME);
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    printf("                   -s=StartAddress - address to start the test, mandatory.\n");
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    printf("                   -w=AccessWidth  - data element width, 1,2 or 4. (Default: %d)\n", DEFAULT_WIDTH);
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    printf("                   -l=Length       - area length to test in bytes. (Default: equal AccessWidth)\n");
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    printf("                   -m=AddressModifier - VME address modifier for accesses. (Default: 0x%02x)\n", DEFAULT_MODIFIER);
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    printf("                   -? - this help.\n");
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}
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/*--- TEST RAM LOOP ------------------------------------------------------------------------------*/
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__u32 SimpleRamTest(int handle, __u32 start, __u32 length, __u8 accessWidth)
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{
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    int  error = 0;
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    __u32 r, w;
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    __u32 dwErrorCount = 0;
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    while (length >= accessWidth)
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    {
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        w = rand();
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        error = VMEwrite(handle, start, accessWidth, 1, &w);
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        if (error)
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        {
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            dwErrorCount++;
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            printf("%s : Can't write @ adr: 0x%08x  AM 0x%0x %d(%s)\n", cszPrgName, start, accessWidth,error, strerror(error));
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        }
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        else
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        {
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            error = VMEread(handle, start, accessWidth, 1, &r);
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            if (error)
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            {
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                dwErrorCount++;
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                printf("%s : Can't read @ adr: 0x%08x (%s)\n", cszPrgName, start, strerror(error));
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            }
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            else
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            {
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                error = ENOANO;
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                switch (accessWidth)
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                {
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                    case BYTE_ACCESS:
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                        if ((w & 0xff) != (r & 0xff))
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                        {
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                            dwErrorCount++;
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                            printf("%s : Compare failed @ adr:0x%08x w:0x%02x r:0x%02x\n",cszPrgName, start, w & 0xff, r & 0xff);
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                        }
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                        break;
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                    case WORD_ACCESS:
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                        if ((w & 0xffff) != (r & 0xffff))
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                        {
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                            dwErrorCount++;
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                            printf("%s : Compare failed @ adr:0x%08x w:0x%04x r:0x%04x\n",cszPrgName, start, w & 0xffff, r & 0xffff);
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                        }
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                        break;
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                    case LONG_ACCESS:
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                        if (w != r)
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                        {
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                            dwErrorCount++;
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                            printf("%s : Compare failed @ adr:0x%08x w:0x%08x r:0x%08x\n",cszPrgName, start, w, r);
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                        }
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                        break;
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                }
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            }
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        }
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        length -= accessWidth;
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        start  += accessWidth;
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    }
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    return dwErrorCount;
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}
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int main(int argc, char **argv)
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{
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    char *fname = DEVICE_NAME;
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    char *ptr;
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    char ch;
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    int  i;
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    int  error = 0;
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    int  handle;
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    __u8 bAddressModifier = DEFAULT_MODIFIER;
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    __u8 bAccessWidth     = DEFAULT_WIDTH;
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    __u32 dwStartAddress  = -1;
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    __u32 dwLength        = -1;
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    //-----------------------------------------------------------------------------------
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    // scan command line
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    cszPrgName = argv[0];
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    for (i = 1; i < argc; i++)
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    {
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        ptr = argv[i];
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        if (*ptr == '-')
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            ptr++;
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        ch = *ptr;
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        ptr++;
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        if (*ptr == '=')
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            ptr++;
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        switch (tolower(ch))
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        {
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            case 'h':
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            case '?': hlpMsg(); exit(0);
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            case 'd': fname = ptr; break;
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            case 's': dwStartAddress = strtoul(ptr, NULL, 16); break;
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            case 'w': bAccessWidth = (__u8)atoi(ptr); break;
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            case 'l': dwLength = strtoul(ptr, NULL, 16); break;
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            case 'm': bAddressModifier = (__u8)strtoul(ptr, NULL, 16); break;
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            default:  printf("%s : Unknown command \"%c\"!\n", cszPrgName, ch); exit(0);    
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        }
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    }
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    //-----------------------------------------------------------------------------------
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    // test for correct parameters
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    if (!fname)
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    {
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        printf("%s : Must have devicename!\n", cszPrgName);
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        exit(EINVAL);
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    }
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    if (dwStartAddress == -1)
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    {
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        printf("%s : Must have a start address!\n", cszPrgName);
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        exit(EINVAL);
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    }
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    if ((bAccessWidth > 4) || (bAccessWidth == 3))
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    {
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        printf("%s : Illegal AccessWidth (%d)!\n", cszPrgName, bAccessWidth);
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        exit(EINVAL);
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    }
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    if (bAddressModifier > 0x3F)
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    {
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        printf("%s : Illegal VME AddressModifer (0x%02x)!\n", cszPrgName, bAddressModifier);
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        exit(EINVAL);
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    }
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    if (dwLength == -1)
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        dwLength = bAccessWidth;
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    printf("%s: Testing %s from 0x%08x to 0x%08x with Modifier 0x%02x.\n",
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           cszPrgName,
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           (bAccessWidth == BYTE_ACCESS) ? "bytes" : ((bAccessWidth == WORD_ACCESS) ? "words" : "longs"),
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           dwStartAddress, dwStartAddress + dwLength, bAddressModifier);
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    //-----------------------------------------------------------------------------------
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    // open the path to device
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    error = VMEopen(fname, bAddressModifier, &handle);
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    if (error)
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    {
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        printf("%s : Can't open path to %s! (%s)\n", cszPrgName, fname, strerror(error));
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        exit(error);
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    }
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    //-----------------------------------------------------------------------------------
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    // loop until error
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    error = SimpleRamTest(handle, dwStartAddress, dwLength, bAccessWidth);
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    if (error)
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        printf("%s: %d test errors!\n", cszPrgName, error);
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    else
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        printf("%s: No test errors.\n", cszPrgName);
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    //-----------------------------------------------------------------------------------
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    // close the path to device
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    error = VMEclose(handle);
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    if (!error)
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        printf("%s: Close OK.\n", cszPrgName);
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    else
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        printf("%s: Close with error, %s!\n", cszPrgName, strerror(error));
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    return error;
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}
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