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1275 |
phoenix |
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Original driver code supplied by Multi-Tech
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*
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* Changes
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* 1/9/98 alan@redhat.com Merge to 2.0.x kernel tree
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* Obtain and use official major/minors
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* Loader switched to a misc device
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* (fixed range check bug as a side effect)
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* Printk clean up
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* 9/12/98 alan@redhat.com Rough port to 2.1.x
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*
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* 10/6/99 sameer Merged the ISA and PCI drivers to
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* a new unified driver.
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* 09/06/01 acme@conectiva.com.br use capable, not suser, do
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* restore_flags on failure in
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* isicom_send_break, verify put_user
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* result
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* ***********************************************************
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*
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* To use this driver you also need the support package. You
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* can find this in RPM format on
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* ftp://ftp.linux.org.uk/pub/linux/alan
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*
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* You can find the original tools for this direct from Multitech
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* ftp://ftp.multitech.com/ISI-Cards/
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*
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* Having installed the cards the module options (/etc/modules.conf)
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*
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* options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4
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*
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* Omit those entries for boards you don't have installed.
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*
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*/
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#include <linux/module.h>
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#include <linux/version.h>
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#include <linux/kernel.h>
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#include <linux/tty.h>
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#include <linux/termios.h>
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#include <linux/fs.h>
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#include <linux/sched.h>
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#include <linux/serial.h>
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#include <linux/mm.h>
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#include <linux/miscdevice.h>
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#include <linux/interrupt.h>
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#include <linux/timer.h>
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#include <linux/ioport.h>
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#include <asm/segment.h>
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#include <asm/uaccess.h>
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#include <asm/io.h>
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#include <asm/system.h>
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#include <linux/pci.h>
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#include <linux/isicom.h>
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static struct pci_device_id isicom_pci_tbl[] = {
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{ VENDOR_ID, 0x2028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ VENDOR_ID, 0x2051, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ VENDOR_ID, 0x2052, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ VENDOR_ID, 0x2053, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ VENDOR_ID, 0x2054, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ VENDOR_ID, 0x2055, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ VENDOR_ID, 0x2056, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ VENDOR_ID, 0x2057, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ VENDOR_ID, 0x2058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ 0 }
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};
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MODULE_DEVICE_TABLE(pci, isicom_pci_tbl);
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static int isicom_refcount;
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static int prev_card = 3; /* start servicing isi_card[0] */
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static struct isi_board * irq_to_board[16];
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static struct tty_driver isicom_normal, isicom_callout;
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static struct tty_struct * isicom_table[PORT_COUNT];
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static struct termios * isicom_termios[PORT_COUNT];
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static struct termios * isicom_termios_locked[PORT_COUNT];
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static struct isi_board isi_card[BOARD_COUNT];
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static struct isi_port isi_ports[PORT_COUNT];
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DECLARE_TASK_QUEUE(tq_isicom);
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static struct timer_list tx;
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static char re_schedule = 1;
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#ifdef ISICOM_DEBUG
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static unsigned long tx_count = 0;
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#endif
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static int ISILoad_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
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static void isicom_tx(unsigned long _data);
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static void isicom_start(struct tty_struct * tty);
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static unsigned char * tmp_buf = 0;
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static DECLARE_MUTEX(tmp_buf_sem);
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/* baud index mappings from linux defns to isi */
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static signed char linuxb_to_isib[] = {
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-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17,
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18, 19
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};
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/*
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* Firmware loader driver specific routines
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*
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*/
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static struct file_operations ISILoad_fops = {
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owner: THIS_MODULE,
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ioctl: ISILoad_ioctl,
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};
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struct miscdevice isiloader_device = {
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ISILOAD_MISC_MINOR, "isictl", &ISILoad_fops
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};
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static inline int WaitTillCardIsFree(unsigned short base)
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{
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unsigned long count=0;
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while( (!(inw(base+0xe) & 0x1)) && (count++ < 6000000));
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if (inw(base+0xe)&0x1)
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return 0;
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else
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return 1;
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}
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static int ISILoad_ioctl(struct inode *inode, struct file *filp,
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unsigned int cmd, unsigned long arg)
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{
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unsigned int card, i, j, signature, status, portcount = 0;
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unsigned short word_count, base;
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bin_frame frame;
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/* exec_record exec_rec; */
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if(get_user(card, (int *)arg))
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return -EFAULT;
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if(card < 0 || card >= BOARD_COUNT)
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return -ENXIO;
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base=isi_card[card].base;
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if(base==0)
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return -ENXIO; /* disabled or not used */
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switch(cmd) {
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case MIOCTL_RESET_CARD:
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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printk(KERN_DEBUG "ISILoad:Resetting Card%d at 0x%x ",card+1,base);
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inw(base+0x8);
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for(i=jiffies+HZ/100;time_before(jiffies, i););
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outw(0,base+0x8); /* Reset */
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for(j=1;j<=3;j++) {
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for(i=jiffies+HZ;time_before(jiffies, i););
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printk(".");
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}
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signature=(inw(base+0x4)) & 0xff;
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if (isi_card[card].isa) {
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if (!(inw(base+0xe) & 0x1) || (inw(base+0x2))) {
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#ifdef ISICOM_DEBUG
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printk("\nbase+0x2=0x%x , base+0xe=0x%x",inw(base+0x2),inw(base+0xe));
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#endif
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printk("\nISILoad:ISA Card%d reset failure (Possible bad I/O Port Address 0x%x).\n",card+1,base);
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return -EIO;
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}
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}
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else {
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portcount = inw(base+0x2);
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if (!(inw(base+0xe) & 0x1) || ((portcount!=0) && (portcount!=4) && (portcount!=8))) {
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#ifdef ISICOM_DEBUG
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printk("\nbase+0x2=0x%x , base+0xe=0x%x",inw(base+0x2),inw(base+0xe));
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#endif
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printk("\nISILoad:PCI Card%d reset failure (Possible bad I/O Port Address 0x%x).\n",card+1,base);
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return -EIO;
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}
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}
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switch(signature) {
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case 0xa5:
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case 0xbb:
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case 0xdd:
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if (isi_card[card].isa)
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isi_card[card].port_count = 8;
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else {
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if (portcount == 4)
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isi_card[card].port_count = 4;
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else
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isi_card[card].port_count = 8;
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}
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isi_card[card].shift_count = 12;
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break;
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case 0xcc: isi_card[card].port_count = 16;
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isi_card[card].shift_count = 11;
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break;
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default: printk("ISILoad:Card%d reset failure (Possible bad I/O Port Address 0x%x).\n",card+1,base);
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#ifdef ISICOM_DEBUG
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printk("Sig=0x%x\n",signature);
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#endif
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return -EIO;
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}
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printk("-Done\n");
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return put_user(signature,(unsigned int*)arg);
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case MIOCTL_LOAD_FIRMWARE:
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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| 224 |
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if(copy_from_user(&frame, (void *) arg, sizeof(bin_frame)))
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return -EFAULT;
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if (WaitTillCardIsFree(base))
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return -EIO;
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| 229 |
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| 230 |
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outw(0xf0,base); /* start upload sequence */
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outw(0x00,base);
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outw((frame.addr), base);/* lsb of adderess */
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| 234 |
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word_count=(frame.count >> 1) + frame.count % 2;
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outw(word_count, base);
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InterruptTheCard(base);
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| 238 |
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for(i=0;i<=0x2f;i++); /* a wee bit of delay */
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| 239 |
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| 240 |
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if (WaitTillCardIsFree(base))
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return -EIO;
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| 242 |
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| 243 |
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if ((status=inw(base+0x4))!=0) {
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printk(KERN_WARNING "ISILoad:Card%d rejected load header:\nAddress:0x%x \nCount:0x%x \nStatus:0x%x \n",
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card+1, frame.addr, frame.count, status);
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| 246 |
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return -EIO;
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| 247 |
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}
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| 248 |
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outsw(base, (void *) frame.bin_data, word_count);
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| 249 |
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| 250 |
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InterruptTheCard(base);
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| 251 |
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| 252 |
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for(i=0;i<=0x0f;i++); /* another wee bit of delay */
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| 253 |
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| 254 |
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if (WaitTillCardIsFree(base))
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| 255 |
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return -EIO;
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| 256 |
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| 257 |
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if ((status=inw(base+0x4))!=0) {
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| 258 |
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printk(KERN_ERR "ISILoad:Card%d got out of sync.Card Status:0x%x\n",card+1, status);
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| 259 |
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return -EIO;
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| 260 |
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}
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| 261 |
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return 0;
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| 262 |
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| 263 |
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case MIOCTL_READ_FIRMWARE:
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| 264 |
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if (!capable(CAP_SYS_ADMIN))
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| 265 |
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return -EPERM;
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| 266 |
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|
| 267 |
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if(copy_from_user(&frame, (void *) arg, sizeof(bin_header)))
|
| 268 |
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return -EFAULT;
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| 269 |
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|
| 270 |
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if (WaitTillCardIsFree(base))
|
| 271 |
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return -EIO;
|
| 272 |
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| 273 |
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outw(0xf1,base); /* start download sequence */
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| 274 |
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outw(0x00,base);
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| 275 |
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outw((frame.addr), base);/* lsb of adderess */
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| 276 |
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| 277 |
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word_count=(frame.count >> 1) + frame.count % 2;
|
| 278 |
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outw(word_count+1, base);
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| 279 |
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InterruptTheCard(base);
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| 280 |
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| 281 |
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for(i=0;i<=0xf;i++); /* a wee bit of delay */
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| 282 |
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| 283 |
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if (WaitTillCardIsFree(base))
|
| 284 |
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return -EIO;
|
| 285 |
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|
| 286 |
|
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if ((status=inw(base+0x4))!=0) {
|
| 287 |
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printk(KERN_WARNING "ISILoad:Card%d rejected verify header:\nAddress:0x%x \nCount:0x%x \nStatus:0x%x \n",
|
| 288 |
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card+1, frame.addr, frame.count, status);
|
| 289 |
|
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return -EIO;
|
| 290 |
|
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}
|
| 291 |
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|
| 292 |
|
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inw(base);
|
| 293 |
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insw(base, frame.bin_data, word_count);
|
| 294 |
|
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InterruptTheCard(base);
|
| 295 |
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| 296 |
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for(i=0;i<=0x0f;i++); /* another wee bit of delay */
|
| 297 |
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|
| 298 |
|
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if (WaitTillCardIsFree(base))
|
| 299 |
|
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return -EIO;
|
| 300 |
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|
| 301 |
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if ((status=inw(base+0x4))!=0) {
|
| 302 |
|
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printk(KERN_ERR "ISILoad:Card%d verify got out of sync.Card Status:0x%x\n",card+1, status);
|
| 303 |
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return -EIO;
|
| 304 |
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}
|
| 305 |
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|
| 306 |
|
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if(copy_to_user((void *) arg, &frame, sizeof(bin_frame)))
|
| 307 |
|
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return -EFAULT;
|
| 308 |
|
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return 0;
|
| 309 |
|
|
|
| 310 |
|
|
case MIOCTL_XFER_CTRL:
|
| 311 |
|
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if (!capable(CAP_SYS_ADMIN))
|
| 312 |
|
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return -EPERM;
|
| 313 |
|
|
if (WaitTillCardIsFree(base))
|
| 314 |
|
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return -EIO;
|
| 315 |
|
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|
| 316 |
|
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outw(0xf2, base);
|
| 317 |
|
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outw(0x800, base);
|
| 318 |
|
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outw(0x0, base);
|
| 319 |
|
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outw(0x0, base);
|
| 320 |
|
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InterruptTheCard(base);
|
| 321 |
|
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outw(0x0, base+0x4); /* for ISI4608 cards */
|
| 322 |
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|
| 323 |
|
|
isi_card[card].status |= FIRMWARE_LOADED;
|
| 324 |
|
|
return 0;
|
| 325 |
|
|
|
| 326 |
|
|
default:
|
| 327 |
|
|
#ifdef ISICOM_DEBUG
|
| 328 |
|
|
printk(KERN_DEBUG "ISILoad: Received Ioctl cmd 0x%x.\n", cmd);
|
| 329 |
|
|
#endif
|
| 330 |
|
|
return -ENOIOCTLCMD;
|
| 331 |
|
|
|
| 332 |
|
|
}
|
| 333 |
|
|
|
| 334 |
|
|
}
|
| 335 |
|
|
|
| 336 |
|
|
|
| 337 |
|
|
/*
|
| 338 |
|
|
* ISICOM Driver specific routines ...
|
| 339 |
|
|
*
|
| 340 |
|
|
*/
|
| 341 |
|
|
|
| 342 |
|
|
static inline int isicom_paranoia_check(struct isi_port const * port, kdev_t dev,
|
| 343 |
|
|
const char * routine)
|
| 344 |
|
|
{
|
| 345 |
|
|
#ifdef ISICOM_DEBUG
|
| 346 |
|
|
static const char * badmagic =
|
| 347 |
|
|
KERN_WARNING "ISICOM: Warning: bad isicom magic for dev %s in %s.\n";
|
| 348 |
|
|
static const char * badport =
|
| 349 |
|
|
KERN_WARNING "ISICOM: Warning: NULL isicom port for dev %s in %s.\n";
|
| 350 |
|
|
if (!port) {
|
| 351 |
|
|
printk(badport, kdevname(dev), routine);
|
| 352 |
|
|
return 1;
|
| 353 |
|
|
}
|
| 354 |
|
|
if (port->magic != ISICOM_MAGIC) {
|
| 355 |
|
|
printk(badmagic, kdevname(dev), routine);
|
| 356 |
|
|
return 1;
|
| 357 |
|
|
}
|
| 358 |
|
|
#endif
|
| 359 |
|
|
return 0;
|
| 360 |
|
|
}
|
| 361 |
|
|
|
| 362 |
|
|
static inline void schedule_bh(struct isi_port * port)
|
| 363 |
|
|
{
|
| 364 |
|
|
queue_task(&port->bh_tqueue, &tq_isicom);
|
| 365 |
|
|
mark_bh(ISICOM_BH);
|
| 366 |
|
|
}
|
| 367 |
|
|
|
| 368 |
|
|
/* Transmitter */
|
| 369 |
|
|
|
| 370 |
|
|
static void isicom_tx(unsigned long _data)
|
| 371 |
|
|
{
|
| 372 |
|
|
short count = (BOARD_COUNT-1), card, base;
|
| 373 |
|
|
short txcount, wait, wrd, residue, word_count, cnt;
|
| 374 |
|
|
struct isi_port * port;
|
| 375 |
|
|
struct tty_struct * tty;
|
| 376 |
|
|
unsigned long flags;
|
| 377 |
|
|
|
| 378 |
|
|
#ifdef ISICOM_DEBUG
|
| 379 |
|
|
++tx_count;
|
| 380 |
|
|
#endif
|
| 381 |
|
|
|
| 382 |
|
|
/* find next active board */
|
| 383 |
|
|
card = (prev_card + 1) & 0x0003;
|
| 384 |
|
|
while(count-- > 0) {
|
| 385 |
|
|
if (isi_card[card].status & BOARD_ACTIVE)
|
| 386 |
|
|
break;
|
| 387 |
|
|
card = (card + 1) & 0x0003;
|
| 388 |
|
|
}
|
| 389 |
|
|
if (!(isi_card[card].status & BOARD_ACTIVE))
|
| 390 |
|
|
goto sched_again;
|
| 391 |
|
|
|
| 392 |
|
|
prev_card = card;
|
| 393 |
|
|
|
| 394 |
|
|
count = isi_card[card].port_count;
|
| 395 |
|
|
port = isi_card[card].ports;
|
| 396 |
|
|
base = isi_card[card].base;
|
| 397 |
|
|
for (;count > 0;count--, port++) {
|
| 398 |
|
|
/* port not active or tx disabled to force flow control */
|
| 399 |
|
|
if (!(port->status & ISI_TXOK))
|
| 400 |
|
|
continue;
|
| 401 |
|
|
|
| 402 |
|
|
tty = port->tty;
|
| 403 |
|
|
save_flags(flags); cli();
|
| 404 |
|
|
txcount = MIN(TX_SIZE, port->xmit_cnt);
|
| 405 |
|
|
if ((txcount <= 0) || tty->stopped || tty->hw_stopped) {
|
| 406 |
|
|
restore_flags(flags);
|
| 407 |
|
|
continue;
|
| 408 |
|
|
}
|
| 409 |
|
|
wait = 200;
|
| 410 |
|
|
while(((inw(base+0x0e) & 0x01) == 0) && (wait-- > 0));
|
| 411 |
|
|
if (wait <= 0) {
|
| 412 |
|
|
restore_flags(flags);
|
| 413 |
|
|
#ifdef ISICOM_DEBUG
|
| 414 |
|
|
printk(KERN_DEBUG "ISICOM: isicom_tx:Card(0x%x) found busy.\n",
|
| 415 |
|
|
card);
|
| 416 |
|
|
#endif
|
| 417 |
|
|
continue;
|
| 418 |
|
|
}
|
| 419 |
|
|
if (!(inw(base + 0x02) & (1 << port->channel))) {
|
| 420 |
|
|
restore_flags(flags);
|
| 421 |
|
|
#ifdef ISICOM_DEBUG
|
| 422 |
|
|
printk(KERN_DEBUG "ISICOM: isicom_tx: cannot tx to 0x%x:%d.\n",
|
| 423 |
|
|
base, port->channel + 1);
|
| 424 |
|
|
#endif
|
| 425 |
|
|
continue;
|
| 426 |
|
|
}
|
| 427 |
|
|
#ifdef ISICOM_DEBUG
|
| 428 |
|
|
printk(KERN_DEBUG "ISICOM: txing %d bytes, port%d.\n",
|
| 429 |
|
|
txcount, port->channel+1);
|
| 430 |
|
|
#endif
|
| 431 |
|
|
outw((port->channel << isi_card[card].shift_count) | txcount
|
| 432 |
|
|
, base);
|
| 433 |
|
|
residue = NO;
|
| 434 |
|
|
wrd = 0;
|
| 435 |
|
|
while (1) {
|
| 436 |
|
|
cnt = MIN(txcount, (SERIAL_XMIT_SIZE - port->xmit_tail));
|
| 437 |
|
|
if (residue == YES) {
|
| 438 |
|
|
residue = NO;
|
| 439 |
|
|
if (cnt > 0) {
|
| 440 |
|
|
wrd |= (port->xmit_buf[port->xmit_tail] << 8);
|
| 441 |
|
|
port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1);
|
| 442 |
|
|
port->xmit_cnt--;
|
| 443 |
|
|
txcount--;
|
| 444 |
|
|
cnt--;
|
| 445 |
|
|
outw(wrd, base);
|
| 446 |
|
|
}
|
| 447 |
|
|
else {
|
| 448 |
|
|
outw(wrd, base);
|
| 449 |
|
|
break;
|
| 450 |
|
|
}
|
| 451 |
|
|
}
|
| 452 |
|
|
if (cnt <= 0) break;
|
| 453 |
|
|
word_count = cnt >> 1;
|
| 454 |
|
|
outsw(base, port->xmit_buf+port->xmit_tail, word_count);
|
| 455 |
|
|
port->xmit_tail = (port->xmit_tail + (word_count << 1)) &
|
| 456 |
|
|
(SERIAL_XMIT_SIZE - 1);
|
| 457 |
|
|
txcount -= (word_count << 1);
|
| 458 |
|
|
port->xmit_cnt -= (word_count << 1);
|
| 459 |
|
|
if (cnt & 0x0001) {
|
| 460 |
|
|
residue = YES;
|
| 461 |
|
|
wrd = port->xmit_buf[port->xmit_tail];
|
| 462 |
|
|
port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1);
|
| 463 |
|
|
port->xmit_cnt--;
|
| 464 |
|
|
txcount--;
|
| 465 |
|
|
}
|
| 466 |
|
|
}
|
| 467 |
|
|
|
| 468 |
|
|
InterruptTheCard(base);
|
| 469 |
|
|
if (port->xmit_cnt <= 0)
|
| 470 |
|
|
port->status &= ~ISI_TXOK;
|
| 471 |
|
|
if (port->xmit_cnt <= WAKEUP_CHARS)
|
| 472 |
|
|
schedule_bh(port);
|
| 473 |
|
|
restore_flags(flags);
|
| 474 |
|
|
}
|
| 475 |
|
|
|
| 476 |
|
|
/* schedule another tx for hopefully in about 10ms */
|
| 477 |
|
|
sched_again:
|
| 478 |
|
|
if (!re_schedule)
|
| 479 |
|
|
return;
|
| 480 |
|
|
init_timer(&tx);
|
| 481 |
|
|
tx.expires = jiffies + HZ/100;
|
| 482 |
|
|
tx.data = 0;
|
| 483 |
|
|
tx.function = isicom_tx;
|
| 484 |
|
|
add_timer(&tx);
|
| 485 |
|
|
|
| 486 |
|
|
return;
|
| 487 |
|
|
}
|
| 488 |
|
|
|
| 489 |
|
|
/* Interrupt handlers */
|
| 490 |
|
|
|
| 491 |
|
|
static void do_isicom_bh(void)
|
| 492 |
|
|
{
|
| 493 |
|
|
run_task_queue(&tq_isicom);
|
| 494 |
|
|
}
|
| 495 |
|
|
|
| 496 |
|
|
|
| 497 |
|
|
|
| 498 |
|
|
static void isicom_bottomhalf(void * data)
|
| 499 |
|
|
{
|
| 500 |
|
|
struct isi_port * port = (struct isi_port *) data;
|
| 501 |
|
|
struct tty_struct * tty = port->tty;
|
| 502 |
|
|
|
| 503 |
|
|
if (!tty)
|
| 504 |
|
|
return;
|
| 505 |
|
|
|
| 506 |
|
|
if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
|
| 507 |
|
|
tty->ldisc.write_wakeup)
|
| 508 |
|
|
(tty->ldisc.write_wakeup)(tty);
|
| 509 |
|
|
wake_up_interruptible(&tty->write_wait);
|
| 510 |
|
|
}
|
| 511 |
|
|
|
| 512 |
|
|
/* main interrupt handler routine */
|
| 513 |
|
|
static void isicom_interrupt(int irq, void * dev_id, struct pt_regs * regs)
|
| 514 |
|
|
{
|
| 515 |
|
|
struct isi_board * card;
|
| 516 |
|
|
struct isi_port * port;
|
| 517 |
|
|
struct tty_struct * tty;
|
| 518 |
|
|
unsigned short base, header, word_count, count;
|
| 519 |
|
|
unsigned char channel;
|
| 520 |
|
|
short byte_count;
|
| 521 |
|
|
|
| 522 |
|
|
/*
|
| 523 |
|
|
* find the source of interrupt
|
| 524 |
|
|
*/
|
| 525 |
|
|
|
| 526 |
|
|
for(count = 0; count < BOARD_COUNT; count++) {
|
| 527 |
|
|
card = &isi_card[count];
|
| 528 |
|
|
if (card->base != 0) {
|
| 529 |
|
|
if (((card->isa == YES) && (card->irq == irq)) ||
|
| 530 |
|
|
((card->isa == NO) && (card->irq == irq) && (inw(card->base+0x0e) & 0x02)))
|
| 531 |
|
|
break;
|
| 532 |
|
|
}
|
| 533 |
|
|
card = NULL;
|
| 534 |
|
|
}
|
| 535 |
|
|
|
| 536 |
|
|
if (!card || !(card->status & FIRMWARE_LOADED)) {
|
| 537 |
|
|
/* printk(KERN_DEBUG "ISICOM: interrupt: not handling irq%d!.\n", irq);*/
|
| 538 |
|
|
return;
|
| 539 |
|
|
}
|
| 540 |
|
|
|
| 541 |
|
|
base = card->base;
|
| 542 |
|
|
if (card->isa == NO) {
|
| 543 |
|
|
/*
|
| 544 |
|
|
* disable any interrupts from the PCI card and lower the
|
| 545 |
|
|
* interrupt line
|
| 546 |
|
|
*/
|
| 547 |
|
|
outw(0x8000, base+0x04);
|
| 548 |
|
|
ClearInterrupt(base);
|
| 549 |
|
|
}
|
| 550 |
|
|
|
| 551 |
|
|
inw(base); /* get the dummy word out */
|
| 552 |
|
|
header = inw(base);
|
| 553 |
|
|
channel = (header & 0x7800) >> card->shift_count;
|
| 554 |
|
|
byte_count = header & 0xff;
|
| 555 |
|
|
#ifdef ISICOM_DEBUG
|
| 556 |
|
|
printk(KERN_DEBUG "ISICOM:Intr:(0x%x:%d).\n", base, channel+1);
|
| 557 |
|
|
#endif
|
| 558 |
|
|
if ((channel+1) > card->port_count) {
|
| 559 |
|
|
printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%x): %d(channel) > port_count.\n",
|
| 560 |
|
|
base, channel+1);
|
| 561 |
|
|
if (card->isa)
|
| 562 |
|
|
ClearInterrupt(base);
|
| 563 |
|
|
else
|
| 564 |
|
|
outw(0x0000, base+0x04); /* enable interrupts */
|
| 565 |
|
|
return;
|
| 566 |
|
|
}
|
| 567 |
|
|
port = card->ports + channel;
|
| 568 |
|
|
if (!(port->flags & ASYNC_INITIALIZED)) {
|
| 569 |
|
|
if (card->isa)
|
| 570 |
|
|
ClearInterrupt(base);
|
| 571 |
|
|
else
|
| 572 |
|
|
outw(0x0000, base+0x04); /* enable interrupts */
|
| 573 |
|
|
return;
|
| 574 |
|
|
}
|
| 575 |
|
|
|
| 576 |
|
|
tty = port->tty;
|
| 577 |
|
|
|
| 578 |
|
|
if (header & 0x8000) { /* Status Packet */
|
| 579 |
|
|
header = inw(base);
|
| 580 |
|
|
switch(header & 0xff) {
|
| 581 |
|
|
case 0: /* Change in EIA signals */
|
| 582 |
|
|
|
| 583 |
|
|
if (port->flags & ASYNC_CHECK_CD) {
|
| 584 |
|
|
if (port->status & ISI_DCD) {
|
| 585 |
|
|
if (!(header & ISI_DCD)) {
|
| 586 |
|
|
/* Carrier has been lost */
|
| 587 |
|
|
#ifdef ISICOM_DEBUG
|
| 588 |
|
|
printk(KERN_DEBUG "ISICOM: interrupt: DCD->low.\n");
|
| 589 |
|
|
#endif
|
| 590 |
|
|
port->status &= ~ISI_DCD;
|
| 591 |
|
|
if (!((port->flags & ASYNC_CALLOUT_ACTIVE) &&
|
| 592 |
|
|
(port->flags & ASYNC_CALLOUT_NOHUP))) {
|
| 593 |
|
|
MOD_INC_USE_COUNT;
|
| 594 |
|
|
if (schedule_task(&port->hangup_tq) == 0)
|
| 595 |
|
|
MOD_DEC_USE_COUNT;
|
| 596 |
|
|
}
|
| 597 |
|
|
}
|
| 598 |
|
|
}
|
| 599 |
|
|
else {
|
| 600 |
|
|
if (header & ISI_DCD) {
|
| 601 |
|
|
/* Carrier has been detected */
|
| 602 |
|
|
#ifdef ISICOM_DEBUG
|
| 603 |
|
|
printk(KERN_DEBUG "ISICOM: interrupt: DCD->high.\n");
|
| 604 |
|
|
#endif
|
| 605 |
|
|
port->status |= ISI_DCD;
|
| 606 |
|
|
wake_up_interruptible(&port->open_wait);
|
| 607 |
|
|
}
|
| 608 |
|
|
}
|
| 609 |
|
|
}
|
| 610 |
|
|
else {
|
| 611 |
|
|
if (header & ISI_DCD)
|
| 612 |
|
|
port->status |= ISI_DCD;
|
| 613 |
|
|
else
|
| 614 |
|
|
port->status &= ~ISI_DCD;
|
| 615 |
|
|
}
|
| 616 |
|
|
|
| 617 |
|
|
if (port->flags & ASYNC_CTS_FLOW) {
|
| 618 |
|
|
if (port->tty->hw_stopped) {
|
| 619 |
|
|
if (header & ISI_CTS) {
|
| 620 |
|
|
port->tty->hw_stopped = 0;
|
| 621 |
|
|
/* start tx ing */
|
| 622 |
|
|
port->status |= (ISI_TXOK | ISI_CTS);
|
| 623 |
|
|
schedule_bh(port);
|
| 624 |
|
|
}
|
| 625 |
|
|
}
|
| 626 |
|
|
else {
|
| 627 |
|
|
if (!(header & ISI_CTS)) {
|
| 628 |
|
|
port->tty->hw_stopped = 1;
|
| 629 |
|
|
/* stop tx ing */
|
| 630 |
|
|
port->status &= ~(ISI_TXOK | ISI_CTS);
|
| 631 |
|
|
}
|
| 632 |
|
|
}
|
| 633 |
|
|
}
|
| 634 |
|
|
else {
|
| 635 |
|
|
if (header & ISI_CTS)
|
| 636 |
|
|
port->status |= ISI_CTS;
|
| 637 |
|
|
else
|
| 638 |
|
|
port->status &= ~ISI_CTS;
|
| 639 |
|
|
}
|
| 640 |
|
|
|
| 641 |
|
|
if (header & ISI_DSR)
|
| 642 |
|
|
port->status |= ISI_DSR;
|
| 643 |
|
|
else
|
| 644 |
|
|
port->status &= ~ISI_DSR;
|
| 645 |
|
|
|
| 646 |
|
|
if (header & ISI_RI)
|
| 647 |
|
|
port->status |= ISI_RI;
|
| 648 |
|
|
else
|
| 649 |
|
|
port->status &= ~ISI_RI;
|
| 650 |
|
|
|
| 651 |
|
|
break;
|
| 652 |
|
|
|
| 653 |
|
|
case 1: /* Received Break !!! */
|
| 654 |
|
|
if (tty->flip.count >= TTY_FLIPBUF_SIZE)
|
| 655 |
|
|
break;
|
| 656 |
|
|
*tty->flip.flag_buf_ptr++ = TTY_BREAK;
|
| 657 |
|
|
/* dunno if this is right */
|
| 658 |
|
|
*tty->flip.char_buf_ptr++ = 0;
|
| 659 |
|
|
tty->flip.count++;
|
| 660 |
|
|
if (port->flags & ASYNC_SAK)
|
| 661 |
|
|
do_SAK(tty);
|
| 662 |
|
|
queue_task(&tty->flip.tqueue, &tq_timer);
|
| 663 |
|
|
break;
|
| 664 |
|
|
|
| 665 |
|
|
case 2: /* Statistics */
|
| 666 |
|
|
printk(KERN_DEBUG "ISICOM: isicom_interrupt: stats!!!.\n");
|
| 667 |
|
|
break;
|
| 668 |
|
|
|
| 669 |
|
|
default:
|
| 670 |
|
|
printk(KERN_WARNING "ISICOM: Intr: Unknown code in status packet.\n");
|
| 671 |
|
|
break;
|
| 672 |
|
|
}
|
| 673 |
|
|
}
|
| 674 |
|
|
else { /* Data Packet */
|
| 675 |
|
|
count = MIN(byte_count, (TTY_FLIPBUF_SIZE - tty->flip.count));
|
| 676 |
|
|
#ifdef ISICOM_DEBUG
|
| 677 |
|
|
printk(KERN_DEBUG "ISICOM: Intr: Can rx %d of %d bytes.\n",
|
| 678 |
|
|
count, byte_count);
|
| 679 |
|
|
#endif
|
| 680 |
|
|
word_count = count >> 1;
|
| 681 |
|
|
insw(base, tty->flip.char_buf_ptr, word_count);
|
| 682 |
|
|
tty->flip.char_buf_ptr += (word_count << 1);
|
| 683 |
|
|
byte_count -= (word_count << 1);
|
| 684 |
|
|
if (count & 0x0001) {
|
| 685 |
|
|
*tty->flip.char_buf_ptr++ = (char)(inw(base) & 0xff);
|
| 686 |
|
|
byte_count -= 2;
|
| 687 |
|
|
}
|
| 688 |
|
|
memset(tty->flip.flag_buf_ptr, 0, count);
|
| 689 |
|
|
tty->flip.flag_buf_ptr += count;
|
| 690 |
|
|
tty->flip.count += count;
|
| 691 |
|
|
|
| 692 |
|
|
if (byte_count > 0) {
|
| 693 |
|
|
printk(KERN_DEBUG "ISICOM: Intr(0x%x:%d): Flip buffer overflow! dropping bytes...\n",
|
| 694 |
|
|
base, channel+1);
|
| 695 |
|
|
while(byte_count > 0) { /* drain out unread xtra data */
|
| 696 |
|
|
inw(base);
|
| 697 |
|
|
byte_count -= 2;
|
| 698 |
|
|
}
|
| 699 |
|
|
}
|
| 700 |
|
|
queue_task(&tty->flip.tqueue, &tq_timer);
|
| 701 |
|
|
}
|
| 702 |
|
|
if (card->isa == YES)
|
| 703 |
|
|
ClearInterrupt(base);
|
| 704 |
|
|
else
|
| 705 |
|
|
outw(0x0000, base+0x04); /* enable interrupts */
|
| 706 |
|
|
return;
|
| 707 |
|
|
}
|
| 708 |
|
|
|
| 709 |
|
|
/* called with interrupts disabled */
|
| 710 |
|
|
static void isicom_config_port(struct isi_port * port)
|
| 711 |
|
|
{
|
| 712 |
|
|
struct isi_board * card = port->card;
|
| 713 |
|
|
struct tty_struct * tty;
|
| 714 |
|
|
unsigned long baud;
|
| 715 |
|
|
unsigned short channel_setup, wait, base = card->base;
|
| 716 |
|
|
unsigned short channel = port->channel, shift_count = card->shift_count;
|
| 717 |
|
|
unsigned char flow_ctrl;
|
| 718 |
|
|
|
| 719 |
|
|
if (!(tty = port->tty) || !tty->termios)
|
| 720 |
|
|
return;
|
| 721 |
|
|
baud = C_BAUD(tty);
|
| 722 |
|
|
if (baud & CBAUDEX) {
|
| 723 |
|
|
baud &= ~CBAUDEX;
|
| 724 |
|
|
|
| 725 |
|
|
/* if CBAUDEX bit is on and the baud is set to either 50 or 75
|
| 726 |
|
|
* then the card is programmed for 57.6Kbps or 115Kbps
|
| 727 |
|
|
* respectively.
|
| 728 |
|
|
*/
|
| 729 |
|
|
|
| 730 |
|
|
if (baud < 1 || baud > 2)
|
| 731 |
|
|
port->tty->termios->c_cflag &= ~CBAUDEX;
|
| 732 |
|
|
else
|
| 733 |
|
|
baud += 15;
|
| 734 |
|
|
}
|
| 735 |
|
|
if (baud == 15) {
|
| 736 |
|
|
|
| 737 |
|
|
/* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set
|
| 738 |
|
|
* by the set_serial_info ioctl ... this is done by
|
| 739 |
|
|
* the 'setserial' utility.
|
| 740 |
|
|
*/
|
| 741 |
|
|
|
| 742 |
|
|
if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
|
| 743 |
|
|
baud++; /* 57.6 Kbps */
|
| 744 |
|
|
if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
|
| 745 |
|
|
baud +=2; /* 115 Kbps */
|
| 746 |
|
|
}
|
| 747 |
|
|
if (linuxb_to_isib[baud] == -1) {
|
| 748 |
|
|
/* hang up */
|
| 749 |
|
|
drop_dtr(port);
|
| 750 |
|
|
return;
|
| 751 |
|
|
}
|
| 752 |
|
|
else
|
| 753 |
|
|
raise_dtr(port);
|
| 754 |
|
|
|
| 755 |
|
|
wait = 100;
|
| 756 |
|
|
while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0));
|
| 757 |
|
|
if (!wait) {
|
| 758 |
|
|
printk(KERN_WARNING "ISICOM: Card found busy in isicom_config_port at channel setup.\n");
|
| 759 |
|
|
return;
|
| 760 |
|
|
}
|
| 761 |
|
|
outw(0x8000 | (channel << shift_count) |0x03, base);
|
| 762 |
|
|
outw(linuxb_to_isib[baud] << 8 | 0x03, base);
|
| 763 |
|
|
channel_setup = 0;
|
| 764 |
|
|
switch(C_CSIZE(tty)) {
|
| 765 |
|
|
case CS5:
|
| 766 |
|
|
channel_setup |= ISICOM_CS5;
|
| 767 |
|
|
break;
|
| 768 |
|
|
case CS6:
|
| 769 |
|
|
channel_setup |= ISICOM_CS6;
|
| 770 |
|
|
break;
|
| 771 |
|
|
case CS7:
|
| 772 |
|
|
channel_setup |= ISICOM_CS7;
|
| 773 |
|
|
break;
|
| 774 |
|
|
case CS8:
|
| 775 |
|
|
channel_setup |= ISICOM_CS8;
|
| 776 |
|
|
break;
|
| 777 |
|
|
}
|
| 778 |
|
|
|
| 779 |
|
|
if (C_CSTOPB(tty))
|
| 780 |
|
|
channel_setup |= ISICOM_2SB;
|
| 781 |
|
|
|
| 782 |
|
|
if (C_PARENB(tty))
|
| 783 |
|
|
channel_setup |= ISICOM_EVPAR;
|
| 784 |
|
|
if (C_PARODD(tty))
|
| 785 |
|
|
channel_setup |= ISICOM_ODPAR;
|
| 786 |
|
|
outw(channel_setup, base);
|
| 787 |
|
|
InterruptTheCard(base);
|
| 788 |
|
|
|
| 789 |
|
|
if (C_CLOCAL(tty))
|
| 790 |
|
|
port->flags &= ~ASYNC_CHECK_CD;
|
| 791 |
|
|
else
|
| 792 |
|
|
port->flags |= ASYNC_CHECK_CD;
|
| 793 |
|
|
|
| 794 |
|
|
/* flow control settings ...*/
|
| 795 |
|
|
flow_ctrl = 0;
|
| 796 |
|
|
port->flags &= ~ASYNC_CTS_FLOW;
|
| 797 |
|
|
if (C_CRTSCTS(tty)) {
|
| 798 |
|
|
port->flags |= ASYNC_CTS_FLOW;
|
| 799 |
|
|
flow_ctrl |= ISICOM_CTSRTS;
|
| 800 |
|
|
}
|
| 801 |
|
|
if (I_IXON(tty))
|
| 802 |
|
|
flow_ctrl |= ISICOM_RESPOND_XONXOFF;
|
| 803 |
|
|
if (I_IXOFF(tty))
|
| 804 |
|
|
flow_ctrl |= ISICOM_INITIATE_XONXOFF;
|
| 805 |
|
|
|
| 806 |
|
|
wait = 100;
|
| 807 |
|
|
while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0));
|
| 808 |
|
|
if (!wait) {
|
| 809 |
|
|
printk(KERN_WARNING "ISICOM: Card found busy in isicom_config_port at flow setup.\n");
|
| 810 |
|
|
return;
|
| 811 |
|
|
}
|
| 812 |
|
|
outw(0x8000 | (channel << shift_count) |0x04, base);
|
| 813 |
|
|
outw(flow_ctrl << 8 | 0x05, base);
|
| 814 |
|
|
outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base);
|
| 815 |
|
|
InterruptTheCard(base);
|
| 816 |
|
|
|
| 817 |
|
|
/* rx enabled -> enable port for rx on the card */
|
| 818 |
|
|
if (C_CREAD(tty)) {
|
| 819 |
|
|
card->port_status |= (1 << channel);
|
| 820 |
|
|
outw(card->port_status, base + 0x02);
|
| 821 |
|
|
}
|
| 822 |
|
|
|
| 823 |
|
|
}
|
| 824 |
|
|
|
| 825 |
|
|
/* open et all */
|
| 826 |
|
|
|
| 827 |
|
|
static inline void isicom_setup_board(struct isi_board * bp)
|
| 828 |
|
|
{
|
| 829 |
|
|
int channel;
|
| 830 |
|
|
struct isi_port * port;
|
| 831 |
|
|
unsigned long flags;
|
| 832 |
|
|
|
| 833 |
|
|
if (bp->status & BOARD_ACTIVE)
|
| 834 |
|
|
return;
|
| 835 |
|
|
port = bp->ports;
|
| 836 |
|
|
#ifdef ISICOM_DEBUG
|
| 837 |
|
|
printk(KERN_DEBUG "ISICOM: setup_board: drop_dtr_rts start, port_count %d...\n", bp->port_count);
|
| 838 |
|
|
#endif
|
| 839 |
|
|
for(channel = 0; channel < bp->port_count; channel++, port++) {
|
| 840 |
|
|
save_flags(flags); cli();
|
| 841 |
|
|
drop_dtr_rts(port);
|
| 842 |
|
|
restore_flags(flags);
|
| 843 |
|
|
}
|
| 844 |
|
|
#ifdef ISICOM_DEBUG
|
| 845 |
|
|
printk(KERN_DEBUG "ISICOM: setup_board: drop_dtr_rts stop...\n");
|
| 846 |
|
|
#endif
|
| 847 |
|
|
|
| 848 |
|
|
bp->status |= BOARD_ACTIVE;
|
| 849 |
|
|
MOD_INC_USE_COUNT;
|
| 850 |
|
|
return;
|
| 851 |
|
|
}
|
| 852 |
|
|
|
| 853 |
|
|
static int isicom_setup_port(struct isi_port * port)
|
| 854 |
|
|
{
|
| 855 |
|
|
struct isi_board * card = port->card;
|
| 856 |
|
|
unsigned long flags;
|
| 857 |
|
|
|
| 858 |
|
|
if (port->flags & ASYNC_INITIALIZED)
|
| 859 |
|
|
return 0;
|
| 860 |
|
|
if (!port->xmit_buf) {
|
| 861 |
|
|
unsigned long page;
|
| 862 |
|
|
|
| 863 |
|
|
if (!(page = get_free_page(GFP_KERNEL)))
|
| 864 |
|
|
return -ENOMEM;
|
| 865 |
|
|
|
| 866 |
|
|
if (port->xmit_buf) {
|
| 867 |
|
|
free_page(page);
|
| 868 |
|
|
return -ERESTARTSYS;
|
| 869 |
|
|
}
|
| 870 |
|
|
port->xmit_buf = (unsigned char *) page;
|
| 871 |
|
|
}
|
| 872 |
|
|
save_flags(flags); cli();
|
| 873 |
|
|
if (port->tty)
|
| 874 |
|
|
clear_bit(TTY_IO_ERROR, &port->tty->flags);
|
| 875 |
|
|
if (port->count == 1)
|
| 876 |
|
|
card->count++;
|
| 877 |
|
|
|
| 878 |
|
|
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
|
| 879 |
|
|
|
| 880 |
|
|
/* discard any residual data */
|
| 881 |
|
|
kill_queue(port, ISICOM_KILLTX | ISICOM_KILLRX);
|
| 882 |
|
|
|
| 883 |
|
|
isicom_config_port(port);
|
| 884 |
|
|
port->flags |= ASYNC_INITIALIZED;
|
| 885 |
|
|
|
| 886 |
|
|
restore_flags(flags);
|
| 887 |
|
|
|
| 888 |
|
|
return 0;
|
| 889 |
|
|
}
|
| 890 |
|
|
|
| 891 |
|
|
static int block_til_ready(struct tty_struct * tty, struct file * filp, struct isi_port * port)
|
| 892 |
|
|
{
|
| 893 |
|
|
int do_clocal = 0, retval;
|
| 894 |
|
|
DECLARE_WAITQUEUE(wait, current);
|
| 895 |
|
|
|
| 896 |
|
|
/* block if port is in the process of being closed */
|
| 897 |
|
|
|
| 898 |
|
|
if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) {
|
| 899 |
|
|
#ifdef ISICOM_DEBUG
|
| 900 |
|
|
printk(KERN_DEBUG "ISICOM: block_til_ready: close in progress.\n");
|
| 901 |
|
|
#endif
|
| 902 |
|
|
interruptible_sleep_on(&port->close_wait);
|
| 903 |
|
|
if (port->flags & ASYNC_HUP_NOTIFY)
|
| 904 |
|
|
return -EAGAIN;
|
| 905 |
|
|
else
|
| 906 |
|
|
return -ERESTARTSYS;
|
| 907 |
|
|
}
|
| 908 |
|
|
|
| 909 |
|
|
/* trying to open a callout device... check for constraints */
|
| 910 |
|
|
|
| 911 |
|
|
if (tty->driver.subtype == SERIAL_TYPE_CALLOUT) {
|
| 912 |
|
|
#ifdef ISICOM_DEBUG
|
| 913 |
|
|
printk(KERN_DEBUG "ISICOM: bl_ti_rdy: callout open.\n");
|
| 914 |
|
|
#endif
|
| 915 |
|
|
if (port->flags & ASYNC_NORMAL_ACTIVE)
|
| 916 |
|
|
return -EBUSY;
|
| 917 |
|
|
if ((port->flags & ASYNC_CALLOUT_ACTIVE) &&
|
| 918 |
|
|
(port->flags & ASYNC_SESSION_LOCKOUT) &&
|
| 919 |
|
|
(port->session != current->session))
|
| 920 |
|
|
return -EBUSY;
|
| 921 |
|
|
|
| 922 |
|
|
if ((port->flags & ASYNC_CALLOUT_ACTIVE) &&
|
| 923 |
|
|
(port->flags & ASYNC_PGRP_LOCKOUT) &&
|
| 924 |
|
|
(port->pgrp != current->pgrp))
|
| 925 |
|
|
return -EBUSY;
|
| 926 |
|
|
port->flags |= ASYNC_CALLOUT_ACTIVE;
|
| 927 |
|
|
cli();
|
| 928 |
|
|
raise_dtr_rts(port);
|
| 929 |
|
|
sti();
|
| 930 |
|
|
return 0;
|
| 931 |
|
|
}
|
| 932 |
|
|
|
| 933 |
|
|
/* if non-blocking mode is set ... */
|
| 934 |
|
|
|
| 935 |
|
|
if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
|
| 936 |
|
|
#ifdef ISICOM_DEBUG
|
| 937 |
|
|
printk(KERN_DEBUG "ISICOM: block_til_ready: non-block mode.\n");
|
| 938 |
|
|
#endif
|
| 939 |
|
|
if (port->flags & ASYNC_CALLOUT_ACTIVE)
|
| 940 |
|
|
return -EBUSY;
|
| 941 |
|
|
port->flags |= ASYNC_NORMAL_ACTIVE;
|
| 942 |
|
|
return 0;
|
| 943 |
|
|
}
|
| 944 |
|
|
|
| 945 |
|
|
if (port->flags & ASYNC_CALLOUT_ACTIVE) {
|
| 946 |
|
|
if (port->normal_termios.c_cflag & CLOCAL)
|
| 947 |
|
|
do_clocal = 1;
|
| 948 |
|
|
} else {
|
| 949 |
|
|
if (C_CLOCAL(tty))
|
| 950 |
|
|
do_clocal = 1;
|
| 951 |
|
|
}
|
| 952 |
|
|
#ifdef ISICOM_DEBUG
|
| 953 |
|
|
if (do_clocal)
|
| 954 |
|
|
printk(KERN_DEBUG "ISICOM: block_til_ready: CLOCAL set.\n");
|
| 955 |
|
|
#endif
|
| 956 |
|
|
|
| 957 |
|
|
/* block waiting for DCD to be asserted, and while
|
| 958 |
|
|
callout dev is busy */
|
| 959 |
|
|
retval = 0;
|
| 960 |
|
|
add_wait_queue(&port->open_wait, &wait);
|
| 961 |
|
|
cli();
|
| 962 |
|
|
if (!tty_hung_up_p(filp))
|
| 963 |
|
|
port->count--;
|
| 964 |
|
|
sti();
|
| 965 |
|
|
port->blocked_open++;
|
| 966 |
|
|
#ifdef ISICOM_DEBUG
|
| 967 |
|
|
printk(KERN_DEBUG "ISICOM: block_til_ready: waiting for DCD...\n");
|
| 968 |
|
|
#endif
|
| 969 |
|
|
while (1) {
|
| 970 |
|
|
cli();
|
| 971 |
|
|
if (!(port->flags & ASYNC_CALLOUT_ACTIVE))
|
| 972 |
|
|
raise_dtr_rts(port);
|
| 973 |
|
|
|
| 974 |
|
|
sti();
|
| 975 |
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
| 976 |
|
|
if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) {
|
| 977 |
|
|
if (port->flags & ASYNC_HUP_NOTIFY)
|
| 978 |
|
|
retval = -EAGAIN;
|
| 979 |
|
|
else
|
| 980 |
|
|
retval = -ERESTARTSYS;
|
| 981 |
|
|
#ifdef ISICOM_DEBUG
|
| 982 |
|
|
printk(KERN_DEBUG "ISICOM: block_til_ready: tty_hung_up_p || not init.\n");
|
| 983 |
|
|
#endif
|
| 984 |
|
|
break;
|
| 985 |
|
|
}
|
| 986 |
|
|
if (!(port->flags & ASYNC_CALLOUT_ACTIVE) &&
|
| 987 |
|
|
!(port->flags & ASYNC_CLOSING) &&
|
| 988 |
|
|
(do_clocal || (port->status & ISI_DCD))) {
|
| 989 |
|
|
#ifdef ISICOM_DEBUG
|
| 990 |
|
|
printk(KERN_DEBUG "ISICOM: block_til_ready: do_clocal || DCD.\n");
|
| 991 |
|
|
#endif
|
| 992 |
|
|
break;
|
| 993 |
|
|
}
|
| 994 |
|
|
if (signal_pending(current)) {
|
| 995 |
|
|
#ifdef ISICOM_DEBUG
|
| 996 |
|
|
printk(KERN_DEBUG "ISICOM: block_til_ready: sig blocked.\n");
|
| 997 |
|
|
#endif
|
| 998 |
|
|
retval = -ERESTARTSYS;
|
| 999 |
|
|
break;
|
| 1000 |
|
|
}
|
| 1001 |
|
|
schedule();
|
| 1002 |
|
|
}
|
| 1003 |
|
|
set_current_state(TASK_RUNNING);
|
| 1004 |
|
|
remove_wait_queue(&port->open_wait, &wait);
|
| 1005 |
|
|
if (!tty_hung_up_p(filp))
|
| 1006 |
|
|
port->count++;
|
| 1007 |
|
|
port->blocked_open--;
|
| 1008 |
|
|
if (retval)
|
| 1009 |
|
|
return retval;
|
| 1010 |
|
|
port->flags |= ASYNC_NORMAL_ACTIVE;
|
| 1011 |
|
|
return 0;
|
| 1012 |
|
|
}
|
| 1013 |
|
|
|
| 1014 |
|
|
static int isicom_open(struct tty_struct * tty, struct file * filp)
|
| 1015 |
|
|
{
|
| 1016 |
|
|
struct isi_port * port;
|
| 1017 |
|
|
struct isi_board * card;
|
| 1018 |
|
|
unsigned int line, board;
|
| 1019 |
|
|
unsigned long flags;
|
| 1020 |
|
|
int error;
|
| 1021 |
|
|
|
| 1022 |
|
|
#ifdef ISICOM_DEBUG
|
| 1023 |
|
|
printk(KERN_DEBUG "ISICOM: open start!!!.\n");
|
| 1024 |
|
|
#endif
|
| 1025 |
|
|
line = MINOR(tty->device) - tty->driver.minor_start;
|
| 1026 |
|
|
|
| 1027 |
|
|
#ifdef ISICOM_DEBUG
|
| 1028 |
|
|
printk(KERN_DEBUG "line = %d.\n", line);
|
| 1029 |
|
|
#endif
|
| 1030 |
|
|
|
| 1031 |
|
|
if ((line < 0) || (line > (PORT_COUNT-1)))
|
| 1032 |
|
|
return -ENODEV;
|
| 1033 |
|
|
board = BOARD(line);
|
| 1034 |
|
|
|
| 1035 |
|
|
#ifdef ISICOM_DEBUG
|
| 1036 |
|
|
printk(KERN_DEBUG "board = %d.\n", board);
|
| 1037 |
|
|
#endif
|
| 1038 |
|
|
|
| 1039 |
|
|
card = &isi_card[board];
|
| 1040 |
|
|
if (!(card->status & FIRMWARE_LOADED)) {
|
| 1041 |
|
|
#ifdef ISICOM_DEBUG
|
| 1042 |
|
|
printk(KERN_DEBUG"ISICOM: Firmware not loaded to card%d.\n", board);
|
| 1043 |
|
|
#endif
|
| 1044 |
|
|
return -ENODEV;
|
| 1045 |
|
|
}
|
| 1046 |
|
|
|
| 1047 |
|
|
/* open on a port greater than the port count for the card !!! */
|
| 1048 |
|
|
if (line > ((board * 16) + card->port_count - 1)) {
|
| 1049 |
|
|
printk(KERN_ERR "ISICOM: Open on a port which exceeds the port_count of the card!\n");
|
| 1050 |
|
|
return -ENODEV;
|
| 1051 |
|
|
}
|
| 1052 |
|
|
port = &isi_ports[line];
|
| 1053 |
|
|
if (isicom_paranoia_check(port, tty->device, "isicom_open"))
|
| 1054 |
|
|
return -ENODEV;
|
| 1055 |
|
|
|
| 1056 |
|
|
#ifdef ISICOM_DEBUG
|
| 1057 |
|
|
printk(KERN_DEBUG "ISICOM: isicom_setup_board ...\n");
|
| 1058 |
|
|
#endif
|
| 1059 |
|
|
isicom_setup_board(card);
|
| 1060 |
|
|
|
| 1061 |
|
|
port->count++;
|
| 1062 |
|
|
tty->driver_data = port;
|
| 1063 |
|
|
port->tty = tty;
|
| 1064 |
|
|
#ifdef ISICOM_DEBUG
|
| 1065 |
|
|
printk(KERN_DEBUG "ISICOM: isicom_setup_port ...\n");
|
| 1066 |
|
|
#endif
|
| 1067 |
|
|
if ((error = isicom_setup_port(port))!=0)
|
| 1068 |
|
|
return error;
|
| 1069 |
|
|
#ifdef ISICOM_DEBUG
|
| 1070 |
|
|
printk(KERN_DEBUG "ISICOM: block_til_ready ...\n");
|
| 1071 |
|
|
#endif
|
| 1072 |
|
|
if ((error = block_til_ready(tty, filp, port))!=0)
|
| 1073 |
|
|
return error;
|
| 1074 |
|
|
|
| 1075 |
|
|
if ((port->count == 1) && (port->flags & ASYNC_SPLIT_TERMIOS)) {
|
| 1076 |
|
|
if (tty->driver.subtype == SERIAL_TYPE_NORMAL)
|
| 1077 |
|
|
*tty->termios = port->normal_termios;
|
| 1078 |
|
|
else
|
| 1079 |
|
|
*tty->termios = port->callout_termios;
|
| 1080 |
|
|
save_flags(flags); cli();
|
| 1081 |
|
|
isicom_config_port(port);
|
| 1082 |
|
|
restore_flags(flags);
|
| 1083 |
|
|
}
|
| 1084 |
|
|
|
| 1085 |
|
|
port->session = current->session;
|
| 1086 |
|
|
port->pgrp = current->pgrp;
|
| 1087 |
|
|
#ifdef ISICOM_DEBUG
|
| 1088 |
|
|
printk(KERN_DEBUG "ISICOM: open end!!!.\n");
|
| 1089 |
|
|
#endif
|
| 1090 |
|
|
return 0;
|
| 1091 |
|
|
}
|
| 1092 |
|
|
|
| 1093 |
|
|
/* close et all */
|
| 1094 |
|
|
|
| 1095 |
|
|
static inline void isicom_shutdown_board(struct isi_board * bp)
|
| 1096 |
|
|
{
|
| 1097 |
|
|
int channel;
|
| 1098 |
|
|
struct isi_port * port;
|
| 1099 |
|
|
|
| 1100 |
|
|
if (!(bp->status & BOARD_ACTIVE))
|
| 1101 |
|
|
return;
|
| 1102 |
|
|
bp->status &= ~BOARD_ACTIVE;
|
| 1103 |
|
|
port = bp->ports;
|
| 1104 |
|
|
for(channel = 0; channel < bp->port_count; channel++, port++) {
|
| 1105 |
|
|
drop_dtr_rts(port);
|
| 1106 |
|
|
}
|
| 1107 |
|
|
MOD_DEC_USE_COUNT;
|
| 1108 |
|
|
}
|
| 1109 |
|
|
|
| 1110 |
|
|
static void isicom_shutdown_port(struct isi_port * port)
|
| 1111 |
|
|
{
|
| 1112 |
|
|
struct isi_board * card = port->card;
|
| 1113 |
|
|
struct tty_struct * tty;
|
| 1114 |
|
|
|
| 1115 |
|
|
if (!(port->flags & ASYNC_INITIALIZED))
|
| 1116 |
|
|
return;
|
| 1117 |
|
|
if (port->xmit_buf) {
|
| 1118 |
|
|
free_page((unsigned long) port->xmit_buf);
|
| 1119 |
|
|
port->xmit_buf = NULL;
|
| 1120 |
|
|
}
|
| 1121 |
|
|
if (!(tty = port->tty) || C_HUPCL(tty))
|
| 1122 |
|
|
/* drop dtr on this port */
|
| 1123 |
|
|
drop_dtr(port);
|
| 1124 |
|
|
|
| 1125 |
|
|
/* any other port uninits */
|
| 1126 |
|
|
|
| 1127 |
|
|
if (tty)
|
| 1128 |
|
|
set_bit(TTY_IO_ERROR, &tty->flags);
|
| 1129 |
|
|
port->flags &= ~ASYNC_INITIALIZED;
|
| 1130 |
|
|
|
| 1131 |
|
|
if (--card->count < 0) {
|
| 1132 |
|
|
printk(KERN_DEBUG "ISICOM: isicom_shutdown_port: bad board(0x%x) count %d.\n",
|
| 1133 |
|
|
card->base, card->count);
|
| 1134 |
|
|
card->count = 0;
|
| 1135 |
|
|
}
|
| 1136 |
|
|
|
| 1137 |
|
|
/* last port was closed , shutdown that boad too */
|
| 1138 |
|
|
if (!card->count)
|
| 1139 |
|
|
isicom_shutdown_board(card);
|
| 1140 |
|
|
}
|
| 1141 |
|
|
|
| 1142 |
|
|
static void isicom_close(struct tty_struct * tty, struct file * filp)
|
| 1143 |
|
|
{
|
| 1144 |
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
| 1145 |
|
|
struct isi_board * card = port->card;
|
| 1146 |
|
|
unsigned long flags;
|
| 1147 |
|
|
|
| 1148 |
|
|
if (!port)
|
| 1149 |
|
|
return;
|
| 1150 |
|
|
if (isicom_paranoia_check(port, tty->device, "isicom_close"))
|
| 1151 |
|
|
return;
|
| 1152 |
|
|
|
| 1153 |
|
|
#ifdef ISICOM_DEBUG
|
| 1154 |
|
|
printk(KERN_DEBUG "ISICOM: Close start!!!.\n");
|
| 1155 |
|
|
#endif
|
| 1156 |
|
|
|
| 1157 |
|
|
save_flags(flags); cli();
|
| 1158 |
|
|
if (tty_hung_up_p(filp)) {
|
| 1159 |
|
|
restore_flags(flags);
|
| 1160 |
|
|
return;
|
| 1161 |
|
|
}
|
| 1162 |
|
|
|
| 1163 |
|
|
if ((tty->count == 1) && (port->count != 1)) {
|
| 1164 |
|
|
printk(KERN_WARNING "ISICOM:(0x%x) isicom_close: bad port count"
|
| 1165 |
|
|
"tty->count = 1 port count = %d.\n",
|
| 1166 |
|
|
card->base, port->count);
|
| 1167 |
|
|
port->count = 1;
|
| 1168 |
|
|
}
|
| 1169 |
|
|
if (--port->count < 0) {
|
| 1170 |
|
|
printk(KERN_WARNING "ISICOM:(0x%x) isicom_close: bad port count for"
|
| 1171 |
|
|
"channel%d = %d", card->base, port->channel,
|
| 1172 |
|
|
port->count);
|
| 1173 |
|
|
port->count = 0;
|
| 1174 |
|
|
}
|
| 1175 |
|
|
|
| 1176 |
|
|
if (port->count) {
|
| 1177 |
|
|
restore_flags(flags);
|
| 1178 |
|
|
return;
|
| 1179 |
|
|
}
|
| 1180 |
|
|
port->flags |= ASYNC_CLOSING;
|
| 1181 |
|
|
/*
|
| 1182 |
|
|
* save termios struct since callout and dialin termios may be
|
| 1183 |
|
|
* different.
|
| 1184 |
|
|
*/
|
| 1185 |
|
|
if (port->flags & ASYNC_NORMAL_ACTIVE)
|
| 1186 |
|
|
port->normal_termios = *tty->termios;
|
| 1187 |
|
|
if (port->flags & ASYNC_CALLOUT_ACTIVE)
|
| 1188 |
|
|
port->callout_termios = *tty->termios;
|
| 1189 |
|
|
|
| 1190 |
|
|
tty->closing = 1;
|
| 1191 |
|
|
if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
|
| 1192 |
|
|
tty_wait_until_sent(tty, port->closing_wait);
|
| 1193 |
|
|
/* indicate to the card that no more data can be received
|
| 1194 |
|
|
on this port */
|
| 1195 |
|
|
if (port->flags & ASYNC_INITIALIZED) {
|
| 1196 |
|
|
card->port_status &= ~(1 << port->channel);
|
| 1197 |
|
|
outw(card->port_status, card->base + 0x02);
|
| 1198 |
|
|
}
|
| 1199 |
|
|
isicom_shutdown_port(port);
|
| 1200 |
|
|
if (tty->driver.flush_buffer)
|
| 1201 |
|
|
tty->driver.flush_buffer(tty);
|
| 1202 |
|
|
if (tty->ldisc.flush_buffer)
|
| 1203 |
|
|
tty->ldisc.flush_buffer(tty);
|
| 1204 |
|
|
tty->closing = 0;
|
| 1205 |
|
|
port->tty = 0;
|
| 1206 |
|
|
if (port->blocked_open) {
|
| 1207 |
|
|
if (port->close_delay) {
|
| 1208 |
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
| 1209 |
|
|
#ifdef ISICOM_DEBUG
|
| 1210 |
|
|
printk(KERN_DEBUG "ISICOM: scheduling until time out.\n");
|
| 1211 |
|
|
#endif
|
| 1212 |
|
|
schedule_timeout(port->close_delay);
|
| 1213 |
|
|
}
|
| 1214 |
|
|
wake_up_interruptible(&port->open_wait);
|
| 1215 |
|
|
}
|
| 1216 |
|
|
port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_ACTIVE |
|
| 1217 |
|
|
ASYNC_CLOSING);
|
| 1218 |
|
|
wake_up_interruptible(&port->close_wait);
|
| 1219 |
|
|
restore_flags(flags);
|
| 1220 |
|
|
#ifdef ISICOM_DEBUG
|
| 1221 |
|
|
printk(KERN_DEBUG "ISICOM: Close end!!!.\n");
|
| 1222 |
|
|
#endif
|
| 1223 |
|
|
}
|
| 1224 |
|
|
|
| 1225 |
|
|
/* write et all */
|
| 1226 |
|
|
static int isicom_write(struct tty_struct * tty, int from_user,
|
| 1227 |
|
|
const unsigned char * buf, int count)
|
| 1228 |
|
|
{
|
| 1229 |
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
| 1230 |
|
|
unsigned long flags;
|
| 1231 |
|
|
int cnt, total = 0;
|
| 1232 |
|
|
#ifdef ISICOM_DEBUG
|
| 1233 |
|
|
printk(KERN_DEBUG "ISICOM: isicom_write for port%d: %d bytes.\n",
|
| 1234 |
|
|
port->channel+1, count);
|
| 1235 |
|
|
#endif
|
| 1236 |
|
|
if (isicom_paranoia_check(port, tty->device, "isicom_write"))
|
| 1237 |
|
|
return 0;
|
| 1238 |
|
|
|
| 1239 |
|
|
if (!tty || !port->xmit_buf || !tmp_buf)
|
| 1240 |
|
|
return 0;
|
| 1241 |
|
|
if (from_user)
|
| 1242 |
|
|
down(&tmp_buf_sem); /* acquire xclusive access to tmp_buf */
|
| 1243 |
|
|
|
| 1244 |
|
|
save_flags(flags);
|
| 1245 |
|
|
while(1) {
|
| 1246 |
|
|
cli();
|
| 1247 |
|
|
cnt = MIN(count, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
|
| 1248 |
|
|
SERIAL_XMIT_SIZE - port->xmit_head));
|
| 1249 |
|
|
if (cnt <= 0)
|
| 1250 |
|
|
break;
|
| 1251 |
|
|
|
| 1252 |
|
|
if (from_user) {
|
| 1253 |
|
|
/* the following may block for paging... hence
|
| 1254 |
|
|
enabling interrupts but tx routine may have
|
| 1255 |
|
|
created more space in xmit_buf when the ctrl
|
| 1256 |
|
|
gets back here */
|
| 1257 |
|
|
sti();
|
| 1258 |
|
|
copy_from_user(tmp_buf, buf, cnt);
|
| 1259 |
|
|
cli();
|
| 1260 |
|
|
cnt = MIN(cnt, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
|
| 1261 |
|
|
SERIAL_XMIT_SIZE - port->xmit_head));
|
| 1262 |
|
|
memcpy(port->xmit_buf + port->xmit_head, tmp_buf, cnt);
|
| 1263 |
|
|
}
|
| 1264 |
|
|
else
|
| 1265 |
|
|
memcpy(port->xmit_buf + port->xmit_head, buf, cnt);
|
| 1266 |
|
|
port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE - 1);
|
| 1267 |
|
|
port->xmit_cnt += cnt;
|
| 1268 |
|
|
restore_flags(flags);
|
| 1269 |
|
|
buf += cnt;
|
| 1270 |
|
|
count -= cnt;
|
| 1271 |
|
|
total += cnt;
|
| 1272 |
|
|
}
|
| 1273 |
|
|
if (from_user)
|
| 1274 |
|
|
up(&tmp_buf_sem);
|
| 1275 |
|
|
if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped)
|
| 1276 |
|
|
port->status |= ISI_TXOK;
|
| 1277 |
|
|
restore_flags(flags);
|
| 1278 |
|
|
#ifdef ISICOM_DEBUG
|
| 1279 |
|
|
printk(KERN_DEBUG "ISICOM: isicom_write %d bytes written.\n", total);
|
| 1280 |
|
|
#endif
|
| 1281 |
|
|
return total;
|
| 1282 |
|
|
}
|
| 1283 |
|
|
|
| 1284 |
|
|
/* put_char et all */
|
| 1285 |
|
|
static void isicom_put_char(struct tty_struct * tty, unsigned char ch)
|
| 1286 |
|
|
{
|
| 1287 |
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
| 1288 |
|
|
unsigned long flags;
|
| 1289 |
|
|
|
| 1290 |
|
|
if (isicom_paranoia_check(port, tty->device, "isicom_put_char"))
|
| 1291 |
|
|
return;
|
| 1292 |
|
|
|
| 1293 |
|
|
if (!tty || !port->xmit_buf)
|
| 1294 |
|
|
return;
|
| 1295 |
|
|
#ifdef ISICOM_DEBUG
|
| 1296 |
|
|
printk(KERN_DEBUG "ISICOM: put_char, port %d, char %c.\n", port->channel+1, ch);
|
| 1297 |
|
|
#endif
|
| 1298 |
|
|
|
| 1299 |
|
|
save_flags(flags); cli();
|
| 1300 |
|
|
|
| 1301 |
|
|
if (port->xmit_cnt >= (SERIAL_XMIT_SIZE - 1)) {
|
| 1302 |
|
|
restore_flags(flags);
|
| 1303 |
|
|
return;
|
| 1304 |
|
|
}
|
| 1305 |
|
|
|
| 1306 |
|
|
port->xmit_buf[port->xmit_head++] = ch;
|
| 1307 |
|
|
port->xmit_head &= (SERIAL_XMIT_SIZE - 1);
|
| 1308 |
|
|
port->xmit_cnt++;
|
| 1309 |
|
|
restore_flags(flags);
|
| 1310 |
|
|
}
|
| 1311 |
|
|
|
| 1312 |
|
|
/* flush_chars et all */
|
| 1313 |
|
|
static void isicom_flush_chars(struct tty_struct * tty)
|
| 1314 |
|
|
{
|
| 1315 |
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
| 1316 |
|
|
|
| 1317 |
|
|
if (isicom_paranoia_check(port, tty->device, "isicom_flush_chars"))
|
| 1318 |
|
|
return;
|
| 1319 |
|
|
|
| 1320 |
|
|
if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
|
| 1321 |
|
|
!port->xmit_buf)
|
| 1322 |
|
|
return;
|
| 1323 |
|
|
|
| 1324 |
|
|
/* this tells the transmitter to consider this port for
|
| 1325 |
|
|
data output to the card ... that's the best we can do. */
|
| 1326 |
|
|
port->status |= ISI_TXOK;
|
| 1327 |
|
|
}
|
| 1328 |
|
|
|
| 1329 |
|
|
/* write_room et all */
|
| 1330 |
|
|
static int isicom_write_room(struct tty_struct * tty)
|
| 1331 |
|
|
{
|
| 1332 |
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
| 1333 |
|
|
int free;
|
| 1334 |
|
|
if (isicom_paranoia_check(port, tty->device, "isicom_write_room"))
|
| 1335 |
|
|
return 0;
|
| 1336 |
|
|
|
| 1337 |
|
|
free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
|
| 1338 |
|
|
if (free < 0)
|
| 1339 |
|
|
free = 0;
|
| 1340 |
|
|
return free;
|
| 1341 |
|
|
}
|
| 1342 |
|
|
|
| 1343 |
|
|
/* chars_in_buffer et all */
|
| 1344 |
|
|
static int isicom_chars_in_buffer(struct tty_struct * tty)
|
| 1345 |
|
|
{
|
| 1346 |
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
| 1347 |
|
|
if (isicom_paranoia_check(port, tty->device, "isicom_chars_in_buffer"))
|
| 1348 |
|
|
return 0;
|
| 1349 |
|
|
return port->xmit_cnt;
|
| 1350 |
|
|
}
|
| 1351 |
|
|
|
| 1352 |
|
|
/* ioctl et all */
|
| 1353 |
|
|
static inline void isicom_send_break(struct isi_port * port, unsigned long length)
|
| 1354 |
|
|
{
|
| 1355 |
|
|
struct isi_board * card = port->card;
|
| 1356 |
|
|
short wait = 10;
|
| 1357 |
|
|
unsigned short base = card->base;
|
| 1358 |
|
|
unsigned long flags;
|
| 1359 |
|
|
|
| 1360 |
|
|
save_flags(flags); cli();
|
| 1361 |
|
|
while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0));
|
| 1362 |
|
|
if (!wait) {
|
| 1363 |
|
|
printk(KERN_DEBUG "ISICOM: Card found busy in isicom_send_break.\n");
|
| 1364 |
|
|
goto out;
|
| 1365 |
|
|
}
|
| 1366 |
|
|
outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base);
|
| 1367 |
|
|
outw((length & 0xff) << 8 | 0x00, base);
|
| 1368 |
|
|
outw((length & 0xff00), base);
|
| 1369 |
|
|
InterruptTheCard(base);
|
| 1370 |
|
|
out: restore_flags(flags);
|
| 1371 |
|
|
}
|
| 1372 |
|
|
|
| 1373 |
|
|
static int isicom_get_modem_info(struct isi_port * port, unsigned int * value)
|
| 1374 |
|
|
{
|
| 1375 |
|
|
/* just send the port status */
|
| 1376 |
|
|
unsigned int info;
|
| 1377 |
|
|
unsigned short status = port->status;
|
| 1378 |
|
|
|
| 1379 |
|
|
info = ((status & ISI_RTS) ? TIOCM_RTS : 0) |
|
| 1380 |
|
|
((status & ISI_DTR) ? TIOCM_DTR : 0) |
|
| 1381 |
|
|
((status & ISI_DCD) ? TIOCM_CAR : 0) |
|
| 1382 |
|
|
((status & ISI_DSR) ? TIOCM_DSR : 0) |
|
| 1383 |
|
|
((status & ISI_CTS) ? TIOCM_CTS : 0) |
|
| 1384 |
|
|
((status & ISI_RI ) ? TIOCM_RI : 0);
|
| 1385 |
|
|
return put_user(info, (unsigned int *) value);
|
| 1386 |
|
|
}
|
| 1387 |
|
|
|
| 1388 |
|
|
static int isicom_set_modem_info(struct isi_port * port, unsigned int cmd,
|
| 1389 |
|
|
unsigned int * value)
|
| 1390 |
|
|
{
|
| 1391 |
|
|
unsigned int arg;
|
| 1392 |
|
|
unsigned long flags;
|
| 1393 |
|
|
|
| 1394 |
|
|
if(get_user(arg, value))
|
| 1395 |
|
|
return -EFAULT;
|
| 1396 |
|
|
|
| 1397 |
|
|
save_flags(flags); cli();
|
| 1398 |
|
|
|
| 1399 |
|
|
switch(cmd) {
|
| 1400 |
|
|
case TIOCMBIS:
|
| 1401 |
|
|
if (arg & TIOCM_RTS)
|
| 1402 |
|
|
raise_rts(port);
|
| 1403 |
|
|
if (arg & TIOCM_DTR)
|
| 1404 |
|
|
raise_dtr(port);
|
| 1405 |
|
|
break;
|
| 1406 |
|
|
|
| 1407 |
|
|
case TIOCMBIC:
|
| 1408 |
|
|
if (arg & TIOCM_RTS)
|
| 1409 |
|
|
drop_rts(port);
|
| 1410 |
|
|
if (arg & TIOCM_DTR)
|
| 1411 |
|
|
drop_dtr(port);
|
| 1412 |
|
|
break;
|
| 1413 |
|
|
|
| 1414 |
|
|
case TIOCMSET:
|
| 1415 |
|
|
if (arg & TIOCM_RTS)
|
| 1416 |
|
|
raise_rts(port);
|
| 1417 |
|
|
else
|
| 1418 |
|
|
drop_rts(port);
|
| 1419 |
|
|
|
| 1420 |
|
|
if (arg & TIOCM_DTR)
|
| 1421 |
|
|
raise_dtr(port);
|
| 1422 |
|
|
else
|
| 1423 |
|
|
drop_dtr(port);
|
| 1424 |
|
|
break;
|
| 1425 |
|
|
|
| 1426 |
|
|
default:
|
| 1427 |
|
|
restore_flags(flags);
|
| 1428 |
|
|
return -EINVAL;
|
| 1429 |
|
|
}
|
| 1430 |
|
|
restore_flags(flags);
|
| 1431 |
|
|
return 0;
|
| 1432 |
|
|
}
|
| 1433 |
|
|
|
| 1434 |
|
|
static int isicom_set_serial_info(struct isi_port * port,
|
| 1435 |
|
|
struct serial_struct * info)
|
| 1436 |
|
|
{
|
| 1437 |
|
|
struct serial_struct newinfo;
|
| 1438 |
|
|
unsigned long flags;
|
| 1439 |
|
|
int reconfig_port;
|
| 1440 |
|
|
|
| 1441 |
|
|
if(copy_from_user(&newinfo, info, sizeof(newinfo)))
|
| 1442 |
|
|
return -EFAULT;
|
| 1443 |
|
|
|
| 1444 |
|
|
reconfig_port = ((port->flags & ASYNC_SPD_MASK) !=
|
| 1445 |
|
|
(newinfo.flags & ASYNC_SPD_MASK));
|
| 1446 |
|
|
|
| 1447 |
|
|
if (!capable(CAP_SYS_ADMIN)) {
|
| 1448 |
|
|
if ((newinfo.close_delay != port->close_delay) ||
|
| 1449 |
|
|
(newinfo.closing_wait != port->closing_wait) ||
|
| 1450 |
|
|
((newinfo.flags & ~ASYNC_USR_MASK) !=
|
| 1451 |
|
|
(port->flags & ~ASYNC_USR_MASK)))
|
| 1452 |
|
|
return -EPERM;
|
| 1453 |
|
|
port->flags = ((port->flags & ~ ASYNC_USR_MASK) |
|
| 1454 |
|
|
(newinfo.flags & ASYNC_USR_MASK));
|
| 1455 |
|
|
}
|
| 1456 |
|
|
else {
|
| 1457 |
|
|
port->close_delay = newinfo.close_delay;
|
| 1458 |
|
|
port->closing_wait = newinfo.closing_wait;
|
| 1459 |
|
|
port->flags = ((port->flags & ~ASYNC_FLAGS) |
|
| 1460 |
|
|
(newinfo.flags & ASYNC_FLAGS));
|
| 1461 |
|
|
}
|
| 1462 |
|
|
if (reconfig_port) {
|
| 1463 |
|
|
save_flags(flags); cli();
|
| 1464 |
|
|
isicom_config_port(port);
|
| 1465 |
|
|
restore_flags(flags);
|
| 1466 |
|
|
}
|
| 1467 |
|
|
return 0;
|
| 1468 |
|
|
}
|
| 1469 |
|
|
|
| 1470 |
|
|
static int isicom_get_serial_info(struct isi_port * port,
|
| 1471 |
|
|
struct serial_struct * info)
|
| 1472 |
|
|
{
|
| 1473 |
|
|
struct serial_struct out_info;
|
| 1474 |
|
|
|
| 1475 |
|
|
memset(&out_info, 0, sizeof(out_info));
|
| 1476 |
|
|
/* out_info.type = ? */
|
| 1477 |
|
|
out_info.line = port - isi_ports;
|
| 1478 |
|
|
out_info.port = port->card->base;
|
| 1479 |
|
|
out_info.irq = port->card->irq;
|
| 1480 |
|
|
out_info.flags = port->flags;
|
| 1481 |
|
|
/* out_info.baud_base = ? */
|
| 1482 |
|
|
out_info.close_delay = port->close_delay;
|
| 1483 |
|
|
out_info.closing_wait = port->closing_wait;
|
| 1484 |
|
|
if(copy_to_user(info, &out_info, sizeof(out_info)))
|
| 1485 |
|
|
return -EFAULT;
|
| 1486 |
|
|
return 0;
|
| 1487 |
|
|
}
|
| 1488 |
|
|
|
| 1489 |
|
|
static int isicom_ioctl(struct tty_struct * tty, struct file * filp,
|
| 1490 |
|
|
unsigned int cmd, unsigned long arg)
|
| 1491 |
|
|
{
|
| 1492 |
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
| 1493 |
|
|
int retval;
|
| 1494 |
|
|
|
| 1495 |
|
|
if (isicom_paranoia_check(port, tty->device, "isicom_ioctl"))
|
| 1496 |
|
|
return -ENODEV;
|
| 1497 |
|
|
|
| 1498 |
|
|
switch(cmd) {
|
| 1499 |
|
|
case TCSBRK:
|
| 1500 |
|
|
retval = tty_check_change(tty);
|
| 1501 |
|
|
if (retval)
|
| 1502 |
|
|
return retval;
|
| 1503 |
|
|
tty_wait_until_sent(tty, 0);
|
| 1504 |
|
|
if (!arg)
|
| 1505 |
|
|
isicom_send_break(port, HZ/4);
|
| 1506 |
|
|
return 0;
|
| 1507 |
|
|
|
| 1508 |
|
|
case TCSBRKP:
|
| 1509 |
|
|
retval = tty_check_change(tty);
|
| 1510 |
|
|
if (retval)
|
| 1511 |
|
|
return retval;
|
| 1512 |
|
|
tty_wait_until_sent(tty, 0);
|
| 1513 |
|
|
isicom_send_break(port, arg ? arg * (HZ/10) : HZ/4);
|
| 1514 |
|
|
return 0;
|
| 1515 |
|
|
|
| 1516 |
|
|
case TIOCGSOFTCAR:
|
| 1517 |
|
|
return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long *) arg);
|
| 1518 |
|
|
|
| 1519 |
|
|
case TIOCSSOFTCAR:
|
| 1520 |
|
|
if(get_user(arg, (unsigned long *) arg))
|
| 1521 |
|
|
return -EFAULT;
|
| 1522 |
|
|
tty->termios->c_cflag =
|
| 1523 |
|
|
((tty->termios->c_cflag & ~CLOCAL) |
|
| 1524 |
|
|
(arg ? CLOCAL : 0));
|
| 1525 |
|
|
return 0;
|
| 1526 |
|
|
|
| 1527 |
|
|
case TIOCMGET:
|
| 1528 |
|
|
return isicom_get_modem_info(port, (unsigned int*) arg);
|
| 1529 |
|
|
|
| 1530 |
|
|
case TIOCMBIS:
|
| 1531 |
|
|
case TIOCMBIC:
|
| 1532 |
|
|
case TIOCMSET:
|
| 1533 |
|
|
return isicom_set_modem_info(port, cmd,
|
| 1534 |
|
|
(unsigned int *) arg);
|
| 1535 |
|
|
|
| 1536 |
|
|
case TIOCGSERIAL:
|
| 1537 |
|
|
return isicom_get_serial_info(port,
|
| 1538 |
|
|
(struct serial_struct *) arg);
|
| 1539 |
|
|
|
| 1540 |
|
|
case TIOCSSERIAL:
|
| 1541 |
|
|
return isicom_set_serial_info(port,
|
| 1542 |
|
|
(struct serial_struct *) arg);
|
| 1543 |
|
|
|
| 1544 |
|
|
default:
|
| 1545 |
|
|
return -ENOIOCTLCMD;
|
| 1546 |
|
|
}
|
| 1547 |
|
|
return 0;
|
| 1548 |
|
|
}
|
| 1549 |
|
|
|
| 1550 |
|
|
/* set_termios et all */
|
| 1551 |
|
|
static void isicom_set_termios(struct tty_struct * tty, struct termios * old_termios)
|
| 1552 |
|
|
{
|
| 1553 |
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
| 1554 |
|
|
unsigned long flags;
|
| 1555 |
|
|
|
| 1556 |
|
|
if (isicom_paranoia_check(port, tty->device, "isicom_set_termios"))
|
| 1557 |
|
|
return;
|
| 1558 |
|
|
|
| 1559 |
|
|
if (tty->termios->c_cflag == old_termios->c_cflag &&
|
| 1560 |
|
|
tty->termios->c_iflag == old_termios->c_iflag)
|
| 1561 |
|
|
return;
|
| 1562 |
|
|
|
| 1563 |
|
|
save_flags(flags); cli();
|
| 1564 |
|
|
isicom_config_port(port);
|
| 1565 |
|
|
restore_flags(flags);
|
| 1566 |
|
|
|
| 1567 |
|
|
if ((old_termios->c_cflag & CRTSCTS) &&
|
| 1568 |
|
|
!(tty->termios->c_cflag & CRTSCTS)) {
|
| 1569 |
|
|
tty->hw_stopped = 0;
|
| 1570 |
|
|
isicom_start(tty);
|
| 1571 |
|
|
}
|
| 1572 |
|
|
}
|
| 1573 |
|
|
|
| 1574 |
|
|
/* throttle et all */
|
| 1575 |
|
|
static void isicom_throttle(struct tty_struct * tty)
|
| 1576 |
|
|
{
|
| 1577 |
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
| 1578 |
|
|
struct isi_board * card = port->card;
|
| 1579 |
|
|
unsigned long flags;
|
| 1580 |
|
|
|
| 1581 |
|
|
if (isicom_paranoia_check(port, tty->device, "isicom_throttle"))
|
| 1582 |
|
|
return;
|
| 1583 |
|
|
|
| 1584 |
|
|
/* tell the card that this port cannot handle any more data for now */
|
| 1585 |
|
|
save_flags(flags); cli();
|
| 1586 |
|
|
card->port_status &= ~(1 << port->channel);
|
| 1587 |
|
|
outw(card->port_status, card->base + 0x02);
|
| 1588 |
|
|
restore_flags(flags);
|
| 1589 |
|
|
}
|
| 1590 |
|
|
|
| 1591 |
|
|
/* unthrottle et all */
|
| 1592 |
|
|
static void isicom_unthrottle(struct tty_struct * tty)
|
| 1593 |
|
|
{
|
| 1594 |
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
| 1595 |
|
|
struct isi_board * card = port->card;
|
| 1596 |
|
|
unsigned long flags;
|
| 1597 |
|
|
|
| 1598 |
|
|
if (isicom_paranoia_check(port, tty->device, "isicom_unthrottle"))
|
| 1599 |
|
|
return;
|
| 1600 |
|
|
|
| 1601 |
|
|
/* tell the card that this port is ready to accept more data */
|
| 1602 |
|
|
save_flags(flags); cli();
|
| 1603 |
|
|
card->port_status |= (1 << port->channel);
|
| 1604 |
|
|
outw(card->port_status, card->base + 0x02);
|
| 1605 |
|
|
restore_flags(flags);
|
| 1606 |
|
|
}
|
| 1607 |
|
|
|
| 1608 |
|
|
/* stop et all */
|
| 1609 |
|
|
static void isicom_stop(struct tty_struct * tty)
|
| 1610 |
|
|
{
|
| 1611 |
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
| 1612 |
|
|
|
| 1613 |
|
|
if (isicom_paranoia_check(port, tty->device, "isicom_stop"))
|
| 1614 |
|
|
return;
|
| 1615 |
|
|
|
| 1616 |
|
|
/* this tells the transmitter not to consider this port for
|
| 1617 |
|
|
data output to the card. */
|
| 1618 |
|
|
port->status &= ~ISI_TXOK;
|
| 1619 |
|
|
}
|
| 1620 |
|
|
|
| 1621 |
|
|
/* start et all */
|
| 1622 |
|
|
static void isicom_start(struct tty_struct * tty)
|
| 1623 |
|
|
{
|
| 1624 |
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
| 1625 |
|
|
|
| 1626 |
|
|
if (isicom_paranoia_check(port, tty->device, "isicom_start"))
|
| 1627 |
|
|
return;
|
| 1628 |
|
|
|
| 1629 |
|
|
/* this tells the transmitter to consider this port for
|
| 1630 |
|
|
data output to the card. */
|
| 1631 |
|
|
port->status |= ISI_TXOK;
|
| 1632 |
|
|
}
|
| 1633 |
|
|
|
| 1634 |
|
|
/* hangup et all */
|
| 1635 |
|
|
static void do_isicom_hangup(void * data)
|
| 1636 |
|
|
{
|
| 1637 |
|
|
struct isi_port * port = (struct isi_port *) data;
|
| 1638 |
|
|
struct tty_struct * tty;
|
| 1639 |
|
|
|
| 1640 |
|
|
tty = port->tty;
|
| 1641 |
|
|
if (tty)
|
| 1642 |
|
|
tty_hangup(tty); /* FIXME: module removal race here - AKPM */
|
| 1643 |
|
|
MOD_DEC_USE_COUNT;
|
| 1644 |
|
|
}
|
| 1645 |
|
|
|
| 1646 |
|
|
static void isicom_hangup(struct tty_struct * tty)
|
| 1647 |
|
|
{
|
| 1648 |
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
| 1649 |
|
|
|
| 1650 |
|
|
if (isicom_paranoia_check(port, tty->device, "isicom_hangup"))
|
| 1651 |
|
|
return;
|
| 1652 |
|
|
|
| 1653 |
|
|
isicom_shutdown_port(port);
|
| 1654 |
|
|
port->count = 0;
|
| 1655 |
|
|
port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_ACTIVE);
|
| 1656 |
|
|
port->tty = 0;
|
| 1657 |
|
|
wake_up_interruptible(&port->open_wait);
|
| 1658 |
|
|
}
|
| 1659 |
|
|
|
| 1660 |
|
|
/* flush_buffer et all */
|
| 1661 |
|
|
static void isicom_flush_buffer(struct tty_struct * tty)
|
| 1662 |
|
|
{
|
| 1663 |
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
| 1664 |
|
|
unsigned long flags;
|
| 1665 |
|
|
|
| 1666 |
|
|
if (isicom_paranoia_check(port, tty->device, "isicom_flush_buffer"))
|
| 1667 |
|
|
return;
|
| 1668 |
|
|
|
| 1669 |
|
|
save_flags(flags); cli();
|
| 1670 |
|
|
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
|
| 1671 |
|
|
restore_flags(flags);
|
| 1672 |
|
|
|
| 1673 |
|
|
wake_up_interruptible(&tty->write_wait);
|
| 1674 |
|
|
if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
|
| 1675 |
|
|
tty->ldisc.write_wakeup)
|
| 1676 |
|
|
(tty->ldisc.write_wakeup)(tty);
|
| 1677 |
|
|
}
|
| 1678 |
|
|
|
| 1679 |
|
|
|
| 1680 |
|
|
static int register_ioregion(void)
|
| 1681 |
|
|
{
|
| 1682 |
|
|
int count, done=0;
|
| 1683 |
|
|
for (count=0; count < BOARD_COUNT; count++ ) {
|
| 1684 |
|
|
if (isi_card[count].base) {
|
| 1685 |
|
|
if (check_region(isi_card[count].base,16)) {
|
| 1686 |
|
|
printk(KERN_DEBUG "ISICOM: I/O Region 0x%x-0x%x is busy. Card%d will be disabled.\n",
|
| 1687 |
|
|
isi_card[count].base,isi_card[count].base+15,count+1);
|
| 1688 |
|
|
isi_card[count].base=0;
|
| 1689 |
|
|
}
|
| 1690 |
|
|
else {
|
| 1691 |
|
|
request_region(isi_card[count].base,16,ISICOM_NAME);
|
| 1692 |
|
|
#ifdef ISICOM_DEBUG
|
| 1693 |
|
|
printk(KERN_DEBUG "ISICOM: I/O Region 0x%x-0x%x requested for Card%d.\n",isi_card[count].base,isi_card[count].base+15,count+1);
|
| 1694 |
|
|
#endif
|
| 1695 |
|
|
done++;
|
| 1696 |
|
|
}
|
| 1697 |
|
|
}
|
| 1698 |
|
|
}
|
| 1699 |
|
|
return done;
|
| 1700 |
|
|
}
|
| 1701 |
|
|
|
| 1702 |
|
|
static void unregister_ioregion(void)
|
| 1703 |
|
|
{
|
| 1704 |
|
|
int count;
|
| 1705 |
|
|
for (count=0; count < BOARD_COUNT; count++ )
|
| 1706 |
|
|
if (isi_card[count].base) {
|
| 1707 |
|
|
release_region(isi_card[count].base,16);
|
| 1708 |
|
|
#ifdef ISICOM_DEBUG
|
| 1709 |
|
|
printk(KERN_DEBUG "ISICOM: I/O Region 0x%x-0x%x released for Card%d.\n",isi_card[count].base,isi_card[count].base+15,count+1);
|
| 1710 |
|
|
#endif
|
| 1711 |
|
|
}
|
| 1712 |
|
|
}
|
| 1713 |
|
|
|
| 1714 |
|
|
static int register_drivers(void)
|
| 1715 |
|
|
{
|
| 1716 |
|
|
int error;
|
| 1717 |
|
|
|
| 1718 |
|
|
/* tty driver structure initialization */
|
| 1719 |
|
|
memset(&isicom_normal, 0, sizeof(struct tty_driver));
|
| 1720 |
|
|
isicom_normal.magic = TTY_DRIVER_MAGIC;
|
| 1721 |
|
|
isicom_normal.name = "ttyM";
|
| 1722 |
|
|
isicom_normal.major = ISICOM_NMAJOR;
|
| 1723 |
|
|
isicom_normal.minor_start = 0;
|
| 1724 |
|
|
isicom_normal.num = PORT_COUNT;
|
| 1725 |
|
|
isicom_normal.type = TTY_DRIVER_TYPE_SERIAL;
|
| 1726 |
|
|
isicom_normal.subtype = SERIAL_TYPE_NORMAL;
|
| 1727 |
|
|
isicom_normal.init_termios = tty_std_termios;
|
| 1728 |
|
|
isicom_normal.init_termios.c_cflag =
|
| 1729 |
|
|
B9600 | CS8 | CREAD | HUPCL |CLOCAL;
|
| 1730 |
|
|
isicom_normal.flags = TTY_DRIVER_REAL_RAW;
|
| 1731 |
|
|
isicom_normal.refcount = &isicom_refcount;
|
| 1732 |
|
|
|
| 1733 |
|
|
isicom_normal.table = isicom_table;
|
| 1734 |
|
|
isicom_normal.termios = isicom_termios;
|
| 1735 |
|
|
isicom_normal.termios_locked = isicom_termios_locked;
|
| 1736 |
|
|
|
| 1737 |
|
|
isicom_normal.open = isicom_open;
|
| 1738 |
|
|
isicom_normal.close = isicom_close;
|
| 1739 |
|
|
isicom_normal.write = isicom_write;
|
| 1740 |
|
|
isicom_normal.put_char = isicom_put_char;
|
| 1741 |
|
|
isicom_normal.flush_chars = isicom_flush_chars;
|
| 1742 |
|
|
isicom_normal.write_room = isicom_write_room;
|
| 1743 |
|
|
isicom_normal.chars_in_buffer = isicom_chars_in_buffer;
|
| 1744 |
|
|
isicom_normal.ioctl = isicom_ioctl;
|
| 1745 |
|
|
isicom_normal.set_termios = isicom_set_termios;
|
| 1746 |
|
|
isicom_normal.throttle = isicom_throttle;
|
| 1747 |
|
|
isicom_normal.unthrottle = isicom_unthrottle;
|
| 1748 |
|
|
isicom_normal.stop = isicom_stop;
|
| 1749 |
|
|
isicom_normal.start = isicom_start;
|
| 1750 |
|
|
isicom_normal.hangup = isicom_hangup;
|
| 1751 |
|
|
isicom_normal.flush_buffer = isicom_flush_buffer;
|
| 1752 |
|
|
|
| 1753 |
|
|
/* callout device */
|
| 1754 |
|
|
|
| 1755 |
|
|
isicom_callout = isicom_normal;
|
| 1756 |
|
|
isicom_callout.name = "cum";
|
| 1757 |
|
|
isicom_callout.major = ISICOM_CMAJOR;
|
| 1758 |
|
|
isicom_callout.subtype = SERIAL_TYPE_CALLOUT;
|
| 1759 |
|
|
|
| 1760 |
|
|
if ((error=tty_register_driver(&isicom_normal))!=0) {
|
| 1761 |
|
|
printk(KERN_DEBUG "ISICOM: Couldn't register the dialin driver, error=%d\n",
|
| 1762 |
|
|
error);
|
| 1763 |
|
|
return error;
|
| 1764 |
|
|
}
|
| 1765 |
|
|
if ((error=tty_register_driver(&isicom_callout))!=0) {
|
| 1766 |
|
|
tty_unregister_driver(&isicom_normal);
|
| 1767 |
|
|
printk(KERN_DEBUG "ISICOM: Couldn't register the callout driver, error=%d\n",
|
| 1768 |
|
|
error);
|
| 1769 |
|
|
return error;
|
| 1770 |
|
|
}
|
| 1771 |
|
|
return 0;
|
| 1772 |
|
|
}
|
| 1773 |
|
|
|
| 1774 |
|
|
static void unregister_drivers(void)
|
| 1775 |
|
|
{
|
| 1776 |
|
|
int error;
|
| 1777 |
|
|
if ((error=tty_unregister_driver(&isicom_callout))!=0)
|
| 1778 |
|
|
printk(KERN_DEBUG "ISICOM: couldn't unregister callout driver error=%d.\n",error);
|
| 1779 |
|
|
if (tty_unregister_driver(&isicom_normal))
|
| 1780 |
|
|
printk(KERN_DEBUG "ISICOM: couldn't unregister normal driver error=%d.\n",error);
|
| 1781 |
|
|
}
|
| 1782 |
|
|
|
| 1783 |
|
|
static int register_isr(void)
|
| 1784 |
|
|
{
|
| 1785 |
|
|
int count, done=0, card;
|
| 1786 |
|
|
int flag;
|
| 1787 |
|
|
unsigned char request;
|
| 1788 |
|
|
for (count=0; count < BOARD_COUNT; count++ ) {
|
| 1789 |
|
|
if (isi_card[count].base) {
|
| 1790 |
|
|
/*
|
| 1791 |
|
|
* verify if the required irq has already been requested for
|
| 1792 |
|
|
* another ISI Card, if so we already have it, else request it
|
| 1793 |
|
|
*/
|
| 1794 |
|
|
request = YES;
|
| 1795 |
|
|
for(card = 0; card < count; card++)
|
| 1796 |
|
|
if ((isi_card[card].base) && (isi_card[card].irq == isi_card[count].irq)) {
|
| 1797 |
|
|
request = NO;
|
| 1798 |
|
|
if ((isi_card[count].isa == NO) && (isi_card[card].isa == NO))
|
| 1799 |
|
|
break;
|
| 1800 |
|
|
/*
|
| 1801 |
|
|
* ISA cards cannot share interrupts with other
|
| 1802 |
|
|
* PCI or ISA devices hence disable this card.
|
| 1803 |
|
|
*/
|
| 1804 |
|
|
release_region(isi_card[count].base,16);
|
| 1805 |
|
|
isi_card[count].base = 0;
|
| 1806 |
|
|
break;
|
| 1807 |
|
|
}
|
| 1808 |
|
|
flag=0;
|
| 1809 |
|
|
if(isi_card[count].isa == NO)
|
| 1810 |
|
|
flag |= SA_SHIRQ;
|
| 1811 |
|
|
|
| 1812 |
|
|
if (request == YES) {
|
| 1813 |
|
|
if (request_irq(isi_card[count].irq, isicom_interrupt, SA_INTERRUPT|flag, ISICOM_NAME, NULL)) {
|
| 1814 |
|
|
printk(KERN_WARNING "ISICOM: Could not install handler at Irq %d. Card%d will be disabled.\n",
|
| 1815 |
|
|
isi_card[count].irq, count+1);
|
| 1816 |
|
|
release_region(isi_card[count].base,16);
|
| 1817 |
|
|
isi_card[count].base=0;
|
| 1818 |
|
|
}
|
| 1819 |
|
|
else {
|
| 1820 |
|
|
printk(KERN_INFO "ISICOM: Card%d at 0x%x using irq %d.\n",
|
| 1821 |
|
|
count+1, isi_card[count].base, isi_card[count].irq);
|
| 1822 |
|
|
|
| 1823 |
|
|
irq_to_board[isi_card[count].irq]=&isi_card[count];
|
| 1824 |
|
|
done++;
|
| 1825 |
|
|
}
|
| 1826 |
|
|
}
|
| 1827 |
|
|
}
|
| 1828 |
|
|
}
|
| 1829 |
|
|
return done;
|
| 1830 |
|
|
}
|
| 1831 |
|
|
|
| 1832 |
|
|
static void unregister_isr(void)
|
| 1833 |
|
|
{
|
| 1834 |
|
|
int count, card;
|
| 1835 |
|
|
unsigned char freeirq;
|
| 1836 |
|
|
for (count=0; count < BOARD_COUNT; count++ ) {
|
| 1837 |
|
|
if (isi_card[count].base) {
|
| 1838 |
|
|
freeirq = YES;
|
| 1839 |
|
|
for(card = 0; card < count; card++)
|
| 1840 |
|
|
if ((isi_card[card].base) && (isi_card[card].irq == isi_card[count].irq)) {
|
| 1841 |
|
|
freeirq = NO;
|
| 1842 |
|
|
break;
|
| 1843 |
|
|
}
|
| 1844 |
|
|
if (freeirq == YES) {
|
| 1845 |
|
|
free_irq(isi_card[count].irq, NULL);
|
| 1846 |
|
|
#ifdef ISICOM_DEBUG
|
| 1847 |
|
|
printk(KERN_DEBUG "ISICOM: Irq %d released for Card%d.\n",isi_card[count].irq, count+1);
|
| 1848 |
|
|
#endif
|
| 1849 |
|
|
}
|
| 1850 |
|
|
}
|
| 1851 |
|
|
}
|
| 1852 |
|
|
}
|
| 1853 |
|
|
|
| 1854 |
|
|
static int isicom_init(void)
|
| 1855 |
|
|
{
|
| 1856 |
|
|
int card, channel, base;
|
| 1857 |
|
|
struct isi_port * port;
|
| 1858 |
|
|
unsigned long page;
|
| 1859 |
|
|
|
| 1860 |
|
|
if (!tmp_buf) {
|
| 1861 |
|
|
page = get_free_page(GFP_KERNEL);
|
| 1862 |
|
|
if (!page) {
|
| 1863 |
|
|
#ifdef ISICOM_DEBUG
|
| 1864 |
|
|
printk(KERN_DEBUG "ISICOM: Couldn't allocate page for tmp_buf.\n");
|
| 1865 |
|
|
#else
|
| 1866 |
|
|
printk(KERN_ERR "ISICOM: Not enough memory...\n");
|
| 1867 |
|
|
#endif
|
| 1868 |
|
|
return 0;
|
| 1869 |
|
|
}
|
| 1870 |
|
|
tmp_buf = (unsigned char *) page;
|
| 1871 |
|
|
}
|
| 1872 |
|
|
|
| 1873 |
|
|
if (!register_ioregion())
|
| 1874 |
|
|
{
|
| 1875 |
|
|
printk(KERN_ERR "ISICOM: All required I/O space found busy.\n");
|
| 1876 |
|
|
free_page((unsigned long)tmp_buf);
|
| 1877 |
|
|
return 0;
|
| 1878 |
|
|
}
|
| 1879 |
|
|
if (register_drivers())
|
| 1880 |
|
|
{
|
| 1881 |
|
|
unregister_ioregion();
|
| 1882 |
|
|
free_page((unsigned long)tmp_buf);
|
| 1883 |
|
|
return 0;
|
| 1884 |
|
|
}
|
| 1885 |
|
|
if (!register_isr())
|
| 1886 |
|
|
{
|
| 1887 |
|
|
unregister_drivers();
|
| 1888 |
|
|
/* ioports already uregistered in register_isr */
|
| 1889 |
|
|
free_page((unsigned long)tmp_buf);
|
| 1890 |
|
|
return 0;
|
| 1891 |
|
|
}
|
| 1892 |
|
|
|
| 1893 |
|
|
/* initialize bottom half */
|
| 1894 |
|
|
init_bh(ISICOM_BH, do_isicom_bh);
|
| 1895 |
|
|
|
| 1896 |
|
|
|
| 1897 |
|
|
memset(isi_ports, 0, sizeof(isi_ports));
|
| 1898 |
|
|
for (card = 0; card < BOARD_COUNT; card++) {
|
| 1899 |
|
|
port = &isi_ports[card * 16];
|
| 1900 |
|
|
isi_card[card].ports = port;
|
| 1901 |
|
|
base = isi_card[card].base;
|
| 1902 |
|
|
for (channel = 0; channel < 16; channel++, port++) {
|
| 1903 |
|
|
port->magic = ISICOM_MAGIC;
|
| 1904 |
|
|
port->card = &isi_card[card];
|
| 1905 |
|
|
port->channel = channel;
|
| 1906 |
|
|
port->normal_termios = isicom_normal.init_termios;
|
| 1907 |
|
|
port->callout_termios = isicom_callout.init_termios;
|
| 1908 |
|
|
port->close_delay = 50 * HZ/100;
|
| 1909 |
|
|
port->closing_wait = 3000 * HZ/100;
|
| 1910 |
|
|
port->hangup_tq.routine = do_isicom_hangup;
|
| 1911 |
|
|
port->hangup_tq.data = port;
|
| 1912 |
|
|
port->bh_tqueue.routine = isicom_bottomhalf;
|
| 1913 |
|
|
port->bh_tqueue.data = port;
|
| 1914 |
|
|
port->status = 0;
|
| 1915 |
|
|
init_waitqueue_head(&port->open_wait);
|
| 1916 |
|
|
init_waitqueue_head(&port->close_wait);
|
| 1917 |
|
|
/* . . . */
|
| 1918 |
|
|
}
|
| 1919 |
|
|
}
|
| 1920 |
|
|
|
| 1921 |
|
|
return 1;
|
| 1922 |
|
|
}
|
| 1923 |
|
|
|
| 1924 |
|
|
/*
|
| 1925 |
|
|
* Insmod can set static symbols so keep these static
|
| 1926 |
|
|
*/
|
| 1927 |
|
|
|
| 1928 |
|
|
static int io[4];
|
| 1929 |
|
|
static int irq[4];
|
| 1930 |
|
|
|
| 1931 |
|
|
MODULE_AUTHOR("MultiTech");
|
| 1932 |
|
|
MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech");
|
| 1933 |
|
|
MODULE_LICENSE("GPL");
|
| 1934 |
|
|
MODULE_PARM(io, "1-4i");
|
| 1935 |
|
|
MODULE_PARM_DESC(io, "I/O ports for the cards");
|
| 1936 |
|
|
MODULE_PARM(irq, "1-4i");
|
| 1937 |
|
|
MODULE_PARM_DESC(irq, "Interrupts for the cards");
|
| 1938 |
|
|
|
| 1939 |
|
|
int init_module(void)
|
| 1940 |
|
|
{
|
| 1941 |
|
|
struct pci_dev *dev = NULL;
|
| 1942 |
|
|
int retval, card, idx, count;
|
| 1943 |
|
|
unsigned char pciirq;
|
| 1944 |
|
|
unsigned int ioaddr;
|
| 1945 |
|
|
|
| 1946 |
|
|
card = 0;
|
| 1947 |
|
|
for(idx=0; idx < BOARD_COUNT; idx++) {
|
| 1948 |
|
|
if (io[idx]) {
|
| 1949 |
|
|
isi_card[idx].base=io[idx];
|
| 1950 |
|
|
isi_card[idx].irq=irq[idx];
|
| 1951 |
|
|
isi_card[idx].isa=YES;
|
| 1952 |
|
|
card++;
|
| 1953 |
|
|
}
|
| 1954 |
|
|
else {
|
| 1955 |
|
|
isi_card[idx].base = 0;
|
| 1956 |
|
|
isi_card[idx].irq = 0;
|
| 1957 |
|
|
}
|
| 1958 |
|
|
}
|
| 1959 |
|
|
|
| 1960 |
|
|
for (idx=0 ;idx < card; idx++) {
|
| 1961 |
|
|
if (!((isi_card[idx].irq==2)||(isi_card[idx].irq==3)||
|
| 1962 |
|
|
(isi_card[idx].irq==4)||(isi_card[idx].irq==5)||
|
| 1963 |
|
|
(isi_card[idx].irq==7)||(isi_card[idx].irq==10)||
|
| 1964 |
|
|
(isi_card[idx].irq==11)||(isi_card[idx].irq==12)||
|
| 1965 |
|
|
(isi_card[idx].irq==15))) {
|
| 1966 |
|
|
|
| 1967 |
|
|
if (isi_card[idx].base) {
|
| 1968 |
|
|
printk(KERN_ERR "ISICOM: Irq %d unsupported. Disabling Card%d...\n",
|
| 1969 |
|
|
isi_card[idx].irq, idx+1);
|
| 1970 |
|
|
isi_card[idx].base=0;
|
| 1971 |
|
|
card--;
|
| 1972 |
|
|
}
|
| 1973 |
|
|
}
|
| 1974 |
|
|
}
|
| 1975 |
|
|
|
| 1976 |
|
|
if (pci_present() && (card < BOARD_COUNT)) {
|
| 1977 |
|
|
for (idx=0; idx < DEVID_COUNT; idx++) {
|
| 1978 |
|
|
dev = NULL;
|
| 1979 |
|
|
for (;;){
|
| 1980 |
|
|
if (!(dev = pci_find_device(VENDOR_ID, isicom_pci_tbl[idx].device, dev)))
|
| 1981 |
|
|
break;
|
| 1982 |
|
|
if (card >= BOARD_COUNT)
|
| 1983 |
|
|
break;
|
| 1984 |
|
|
|
| 1985 |
|
|
if (pci_enable_device(dev))
|
| 1986 |
|
|
break;
|
| 1987 |
|
|
|
| 1988 |
|
|
/* found a PCI ISI card! */
|
| 1989 |
|
|
ioaddr = pci_resource_start (dev, 3); /* i.e at offset 0x1c in the
|
| 1990 |
|
|
* PCI configuration register
|
| 1991 |
|
|
* space.
|
| 1992 |
|
|
*/
|
| 1993 |
|
|
pciirq = dev->irq;
|
| 1994 |
|
|
printk(KERN_INFO "ISI PCI Card(Device ID 0x%x)\n", isicom_pci_tbl[idx].device);
|
| 1995 |
|
|
/*
|
| 1996 |
|
|
* allot the first empty slot in the array
|
| 1997 |
|
|
*/
|
| 1998 |
|
|
for (count=0; count < BOARD_COUNT; count++) {
|
| 1999 |
|
|
if (isi_card[count].base == 0) {
|
| 2000 |
|
|
isi_card[count].base = ioaddr;
|
| 2001 |
|
|
isi_card[count].irq = pciirq;
|
| 2002 |
|
|
isi_card[count].isa = NO;
|
| 2003 |
|
|
card++;
|
| 2004 |
|
|
break;
|
| 2005 |
|
|
}
|
| 2006 |
|
|
}
|
| 2007 |
|
|
}
|
| 2008 |
|
|
if (card >= BOARD_COUNT) break;
|
| 2009 |
|
|
}
|
| 2010 |
|
|
}
|
| 2011 |
|
|
|
| 2012 |
|
|
if (!(isi_card[0].base || isi_card[1].base || isi_card[2].base || isi_card[3].base)) {
|
| 2013 |
|
|
printk(KERN_ERR "ISICOM: No valid card configuration. Driver cannot be initialized...\n");
|
| 2014 |
|
|
return -EIO;
|
| 2015 |
|
|
}
|
| 2016 |
|
|
retval=misc_register(&isiloader_device);
|
| 2017 |
|
|
if (retval<0) {
|
| 2018 |
|
|
printk(KERN_ERR "ISICOM: Unable to register firmware loader driver.\n");
|
| 2019 |
|
|
return retval;
|
| 2020 |
|
|
}
|
| 2021 |
|
|
|
| 2022 |
|
|
if (!isicom_init()) {
|
| 2023 |
|
|
if (misc_deregister(&isiloader_device))
|
| 2024 |
|
|
printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n");
|
| 2025 |
|
|
return -EIO;
|
| 2026 |
|
|
}
|
| 2027 |
|
|
|
| 2028 |
|
|
init_timer(&tx);
|
| 2029 |
|
|
tx.expires = jiffies + 1;
|
| 2030 |
|
|
tx.data = 0;
|
| 2031 |
|
|
tx.function = isicom_tx;
|
| 2032 |
|
|
re_schedule = 1;
|
| 2033 |
|
|
add_timer(&tx);
|
| 2034 |
|
|
|
| 2035 |
|
|
return 0;
|
| 2036 |
|
|
}
|
| 2037 |
|
|
|
| 2038 |
|
|
void cleanup_module(void)
|
| 2039 |
|
|
{
|
| 2040 |
|
|
re_schedule = 0;
|
| 2041 |
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
| 2042 |
|
|
schedule_timeout(HZ);
|
| 2043 |
|
|
|
| 2044 |
|
|
remove_bh(ISICOM_BH);
|
| 2045 |
|
|
|
| 2046 |
|
|
#ifdef ISICOM_DEBUG
|
| 2047 |
|
|
printk("ISICOM: isicom_tx tx_count = %ld.\n", tx_count);
|
| 2048 |
|
|
#endif
|
| 2049 |
|
|
|
| 2050 |
|
|
#ifdef ISICOM_DEBUG
|
| 2051 |
|
|
printk("ISICOM: uregistering isr ...\n");
|
| 2052 |
|
|
#endif
|
| 2053 |
|
|
unregister_isr();
|
| 2054 |
|
|
|
| 2055 |
|
|
#ifdef ISICOM_DEBUG
|
| 2056 |
|
|
printk("ISICOM: unregistering drivers ...\n");
|
| 2057 |
|
|
#endif
|
| 2058 |
|
|
unregister_drivers();
|
| 2059 |
|
|
|
| 2060 |
|
|
#ifdef ISICOM_DEBUG
|
| 2061 |
|
|
printk("ISICOM: unregistering ioregion ...\n");
|
| 2062 |
|
|
#endif
|
| 2063 |
|
|
unregister_ioregion();
|
| 2064 |
|
|
|
| 2065 |
|
|
#ifdef ISICOM_DEBUG
|
| 2066 |
|
|
printk("ISICOM: freeing tmp_buf ...\n");
|
| 2067 |
|
|
#endif
|
| 2068 |
|
|
free_page((unsigned long)tmp_buf);
|
| 2069 |
|
|
|
| 2070 |
|
|
#ifdef ISICOM_DEBUG
|
| 2071 |
|
|
printk("ISICOM: unregistering firmware loader ...\n");
|
| 2072 |
|
|
#endif
|
| 2073 |
|
|
if (misc_deregister(&isiloader_device))
|
| 2074 |
|
|
printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n");
|
| 2075 |
|
|
}
|
