219 lines
4.6 KiB
C
219 lines
4.6 KiB
C
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/*
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*
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* Copyright (C) Eicon Technology Corporation, 2000.
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*
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* Eicon File Revision : 1.12
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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, or (at your option)
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* 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 OF ANY KIND WHATSOEVER INCLUDING ANY
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the 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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*/
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#define __NO_VERSION__
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/poll.h>
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#include <linux/fs.h>
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#include <linux/slab.h>
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#undef N_DATA
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#include "adapter.h"
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#include "divas.h"
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#include "divalog.h"
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extern int DivasCardNext;
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void UxPause(long ms);
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void bcopy(void *pSource, void *pDest, dword dwLength);
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int DivasGetMem(mem_block_t *);
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#define DIA_IOCTL_UNLOCK 12
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void UnlockDivas(void);
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int do_ioctl(struct inode *pDivasInode, struct file *pDivasFile,
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unsigned int command, unsigned long arg)
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{
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byte *pUserCards, card_i;
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word wCardNum;
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switch (command)
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{
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case DIA_IOCTL_CONFIG:
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{
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dia_config_t DivaConfig;
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if (copy_from_user(&DivaConfig, (void *)arg, sizeof(dia_config_t)))
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return -EFAULT;
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DivasCardConfig(&DivaConfig);
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return 0;
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}
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case DIA_IOCTL_DETECT:
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pUserCards = (byte *) arg;
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if (!verify_area(VERIFY_WRITE, pUserCards, 20))
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{
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if(__put_user(DivasCardNext, pUserCards++))
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return -EFAULT;
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for (card_i=1; card_i < 20; card_i++)
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{
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if(__put_user((byte) DivasCards[card_i - 1].cfg.card_type, pUserCards++))
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return -EFAULT;
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}
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}
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else return -EFAULT;
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return 0;
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case DIA_IOCTL_START:
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{
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dia_start_t DivaStart;
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if (copy_from_user(&DivaStart, (void *)arg, sizeof(dia_start_t)))
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return -EFAULT;
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return DivasCardStart(DivaStart.card_id);
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}
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case DIA_IOCTL_FLAVOUR:
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return 0;
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case DIA_IOCTL_LOAD:
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{
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dia_load_t DivaLoad;
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if(copy_from_user(&DivaLoad, (void *)arg, sizeof(dia_load_t)))
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return -EFAULT;
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if (!verify_area(VERIFY_READ, DivaLoad.code,DivaLoad.length))
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{
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if (DivasCardLoad(&DivaLoad))
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{
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printk(KERN_WARNING "Divas: Error loading DIVA Server adapter\n");
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return -EINVAL;
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}
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return 0;
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}
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return -EFAULT;
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}
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case DIA_IOCTL_LOG:
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{
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dia_log_t DivaLog;
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if (copy_from_user(&DivaLog, (void *) arg, sizeof(dia_log_t)))
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return -EFAULT;
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DivasLog(&DivaLog);
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return 0;
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}
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case DIA_IOCTL_XLOG_REQ:
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if(get_user(wCardNum, (word *) arg))
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return -EFAULT;
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DivasXlogReq(wCardNum);
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return 0;
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case DIA_IOCTL_GET_NUM:
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if(put_user(DivasCardNext, (int *)arg))
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return -EFAULT;
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return 0;
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case DIA_IOCTL_GET_LIST:
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{
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dia_card_list_t cards;
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DPRINTF(("divas: DIA_IOCTL_GET_LIST"));
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DivasGetList(&cards);
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if(copy_to_user((void *)arg, &cards, sizeof(cards)))
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return -EFAULT;
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return 0;
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}
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case DIA_IOCTL_GET_MEM:
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{
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mem_block_t mem_block;
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if (copy_from_user(&mem_block, (void *)arg, sizeof(mem_block_t)))
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return -EFAULT;
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DivasGetMem(&mem_block);
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return 0;
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}
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case DIA_IOCTL_UNLOCK:
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UnlockDivas();
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return 0;
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default:
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return -EINVAL;
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}
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return -EINVAL;
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}
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unsigned int do_poll(struct file *pFile, struct poll_table_struct *pPollTable)
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{
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word wMask = 0;
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if (!DivasLogFifoEmpty())
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{
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wMask |= POLLIN | POLLRDNORM;
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}
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return wMask;
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}
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ssize_t do_read(struct file *pFile, char *pUserBuffer, size_t BufferSize, loff_t *pOffset)
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{
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klog_t *pClientLogBuffer = (klog_t *) pUserBuffer;
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klog_t *pHeadItem;
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if (BufferSize < sizeof(klog_t))
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{
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printk(KERN_WARNING "Divas: Divalog buffer specifed a size that is too small (%d - %d required)\n",
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BufferSize, sizeof(klog_t));
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return 0;
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}
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pHeadItem = (klog_t *) DivasLogFifoRead();
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if (pHeadItem)
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{
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bcopy(pHeadItem, pClientLogBuffer, sizeof(klog_t));
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kfree(pHeadItem);
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return sizeof(klog_t);
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}
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return 0;
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}
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static int private_usage_count;
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int do_open(struct inode *pInode, struct file *pFile)
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{
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MOD_INC_USE_COUNT;
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#ifdef MODULE
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private_usage_count++;
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#endif
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return 0;
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}
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int do_release(struct inode *pInode, struct file *pFile)
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{
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MOD_DEC_USE_COUNT;
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#ifdef MODULE
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private_usage_count--;
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#endif
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return 0;
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}
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void UnlockDivas(void)
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{
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while (private_usage_count > 0)
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{
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private_usage_count--;
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MOD_DEC_USE_COUNT;
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}
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}
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