mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-27 07:20:52 +07:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2080 lines
52 KiB
C
2080 lines
52 KiB
C
/*
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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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*
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* 3/9/99 sameer Added support for ISI4616 cards.
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*
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* 16/9/99 sameer We do not force RTS low anymore.
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* This is to prevent the firmware
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* from getting confused.
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*
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* 26/10/99 sameer Cosmetic changes:The driver now
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* dumps the Port Count information
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* along with I/O address and IRQ.
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*
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* 13/12/99 sameer Fixed the problem with IRQ sharing.
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*
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* 10/5/00 sameer Fixed isicom_shutdown_board()
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* to not lower DTR on all the ports
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* when the last port on the card is
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* closed.
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*
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* 10/5/00 sameer Signal mask setup command added
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* to isicom_setup_port and
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* isicom_shutdown_port.
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*
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* 24/5/00 sameer The driver is now SMP aware.
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*
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*
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* 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem
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*
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*
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* 03/01/01 anil .s Added support for resetting the
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* internal modems on ISI cards.
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*
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* 08/02/01 anil .s Upgraded the driver for kernel
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* 2.4.x
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*
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* 11/04/01 Kevin Fixed firmware load problem with
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* ISIHP-4X card
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*
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* 30/04/01 anil .s Fixed the remote login through
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* ISI port problem. Now the link
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* does not go down before password
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* prompt.
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*
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* 03/05/01 anil .s Fixed the problem with IRQ sharing
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* among ISI-PCI cards.
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*
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* 03/05/01 anil .s Added support to display the version
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* info during insmod as well as module
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* listing by lsmod.
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*
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* 10/05/01 anil .s Done the modifications to the source
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* file and Install script so that the
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* same installation can be used for
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* 2.2.x and 2.4.x kernel.
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*
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* 06/06/01 anil .s Now we drop both dtr and rts during
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* shutdown_port as well as raise them
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* during isicom_config_port.
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*
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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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* 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps
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* Baud index extended to 21
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*
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* 20/03/03 ranjeeth Made to work for Linux Advanced server.
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* Taken care of license warning.
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*
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* 10/12/03 Ravindra Made to work for Fedora Core 1 of
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* Red Hat Distribution
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*
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* 06/01/05 Alan Cox Merged the ISI and base kernel strands
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* into a single 2.6 driver
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*
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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/modprobe.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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* TODO
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* Hotplug
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* Merge testing
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* 64-bit verification
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*/
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#include <linux/module.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/delay.h>
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#include <linux/ioport.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 prev_card = 3; /* start servicing isi_card[0] */
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static struct tty_driver *isicom_normal;
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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;
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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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struct isi_board {
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unsigned short base;
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unsigned char irq;
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unsigned char port_count;
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unsigned short status;
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unsigned short port_status; /* each bit represents a single port */
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unsigned short shift_count;
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struct isi_port * ports;
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signed char count;
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unsigned char isa;
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spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */
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unsigned long flags;
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};
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struct isi_port {
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unsigned short magic;
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unsigned int flags;
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int count;
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int blocked_open;
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int close_delay;
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unsigned short channel;
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unsigned short status;
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unsigned short closing_wait;
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struct isi_board * card;
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struct tty_struct * tty;
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wait_queue_head_t close_wait;
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wait_queue_head_t open_wait;
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struct work_struct hangup_tq;
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struct work_struct bh_tqueue;
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unsigned char * xmit_buf;
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int xmit_head;
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int xmit_tail;
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int xmit_cnt;
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};
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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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/*
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* Locking functions for card level locking. We need to own both
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* the kernel lock for the card and have the card in a position that
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* it wants to talk.
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*/
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static int lock_card(struct isi_board *card)
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{
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char retries;
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unsigned short base = card->base;
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for (retries = 0; retries < 100; retries++) {
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spin_lock_irqsave(&card->card_lock, card->flags);
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if (inw(base + 0xe) & 0x1) {
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return 1;
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} else {
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spin_unlock_irqrestore(&card->card_lock, card->flags);
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udelay(1000); /* 1ms */
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}
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}
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printk(KERN_WARNING "ISICOM: Failed to lock Card (0x%x)\n", card->base);
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return 0; /* Failed to aquire the card! */
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}
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static int lock_card_at_interrupt(struct isi_board *card)
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{
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unsigned char retries;
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unsigned short base = card->base;
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for (retries = 0; retries < 200; retries++) {
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spin_lock_irqsave(&card->card_lock, card->flags);
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if (inw(base + 0xe) & 0x1)
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return 1;
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else
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spin_unlock_irqrestore(&card->card_lock, card->flags);
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}
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/* Failing in interrupt is an acceptable event */
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return 0; /* Failed to aquire the card! */
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}
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static void unlock_card(struct isi_board *card)
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{
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spin_unlock_irqrestore(&card->card_lock, card->flags);
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}
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/*
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* ISI Card specific ops ...
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*/
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static void raise_dtr(struct isi_port * port)
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{
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struct isi_board * card = port->card;
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unsigned short base = card->base;
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unsigned char channel = port->channel;
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if (!lock_card(card))
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return;
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outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
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outw(0x0504, base);
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InterruptTheCard(base);
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port->status |= ISI_DTR;
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unlock_card(card);
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}
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static inline void drop_dtr(struct isi_port * port)
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{
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struct isi_board * card = port->card;
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unsigned short base = card->base;
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unsigned char channel = port->channel;
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if (!lock_card(card))
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return;
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outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
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outw(0x0404, base);
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InterruptTheCard(base);
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port->status &= ~ISI_DTR;
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unlock_card(card);
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}
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static inline void raise_rts(struct isi_port * port)
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{
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struct isi_board * card = port->card;
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unsigned short base = card->base;
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unsigned char channel = port->channel;
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if (!lock_card(card))
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return;
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outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
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outw(0x0a04, base);
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InterruptTheCard(base);
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port->status |= ISI_RTS;
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unlock_card(card);
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}
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static inline void drop_rts(struct isi_port * port)
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{
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struct isi_board * card = port->card;
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unsigned short base = card->base;
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unsigned char channel = port->channel;
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if (!lock_card(card))
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return;
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outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
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outw(0x0804, base);
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InterruptTheCard(base);
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port->status &= ~ISI_RTS;
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unlock_card(card);
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}
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static inline void raise_dtr_rts(struct isi_port * port)
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{
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struct isi_board * card = port->card;
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unsigned short base = card->base;
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unsigned char channel = port->channel;
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if (!lock_card(card))
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return;
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outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
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outw(0x0f04, base);
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InterruptTheCard(base);
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port->status |= (ISI_DTR | ISI_RTS);
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unlock_card(card);
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}
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static void drop_dtr_rts(struct isi_port * port)
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{
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struct isi_board * card = port->card;
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unsigned short base = card->base;
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unsigned char channel = port->channel;
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if (!lock_card(card))
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return;
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outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
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outw(0x0c04, base);
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InterruptTheCard(base);
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port->status &= ~(ISI_RTS | ISI_DTR);
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unlock_card(card);
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}
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static inline void kill_queue(struct isi_port * port, short queue)
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{
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struct isi_board * card = port->card;
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unsigned short base = card->base;
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unsigned char channel = port->channel;
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if (!lock_card(card))
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return;
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outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
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outw((queue << 8) | 0x06, base);
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InterruptTheCard(base);
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unlock_card(card);
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}
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/*
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* Firmware loader driver specific routines. This needs to mostly die
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* and be replaced with request_firmware.
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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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static 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 long t;
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unsigned short word_count, base;
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bin_frame frame;
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void __user *argp = (void __user *)arg;
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/* exec_record exec_rec; */
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if(get_user(card, (int __user *)argp))
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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(t=jiffies+HZ/100;time_before(jiffies, t););
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outw(0,base+0x8); /* Reset */
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for(j=1;j<=3;j++) {
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for(t=jiffies+HZ;time_before(jiffies, t););
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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 __user *)argp);
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|
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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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if(copy_from_user(&frame, argp, sizeof(bin_frame)))
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return -EFAULT;
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|
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if (WaitTillCardIsFree(base))
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return -EIO;
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|
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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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|
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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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|
|
for(i=0;i<=0x2f;i++); /* a wee bit of delay */
|
|
|
|
if (WaitTillCardIsFree(base))
|
|
return -EIO;
|
|
|
|
if ((status=inw(base+0x4))!=0) {
|
|
printk(KERN_WARNING "ISILoad:Card%d rejected load header:\nAddress:0x%x \nCount:0x%x \nStatus:0x%x \n",
|
|
card+1, frame.addr, frame.count, status);
|
|
return -EIO;
|
|
}
|
|
outsw(base, (void *) frame.bin_data, word_count);
|
|
|
|
InterruptTheCard(base);
|
|
|
|
for(i=0;i<=0x0f;i++); /* another wee bit of delay */
|
|
|
|
if (WaitTillCardIsFree(base))
|
|
return -EIO;
|
|
|
|
if ((status=inw(base+0x4))!=0) {
|
|
printk(KERN_ERR "ISILoad:Card%d got out of sync.Card Status:0x%x\n",card+1, status);
|
|
return -EIO;
|
|
}
|
|
return 0;
|
|
|
|
case MIOCTL_READ_FIRMWARE:
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if(copy_from_user(&frame, argp, sizeof(bin_header)))
|
|
return -EFAULT;
|
|
|
|
if (WaitTillCardIsFree(base))
|
|
return -EIO;
|
|
|
|
outw(0xf1,base); /* start download sequence */
|
|
outw(0x00,base);
|
|
outw((frame.addr), base);/* lsb of adderess */
|
|
|
|
word_count=(frame.count >> 1) + frame.count % 2;
|
|
outw(word_count+1, base);
|
|
InterruptTheCard(base);
|
|
|
|
for(i=0;i<=0xf;i++); /* a wee bit of delay */
|
|
|
|
if (WaitTillCardIsFree(base))
|
|
return -EIO;
|
|
|
|
if ((status=inw(base+0x4))!=0) {
|
|
printk(KERN_WARNING "ISILoad:Card%d rejected verify header:\nAddress:0x%x \nCount:0x%x \nStatus:0x%x \n",
|
|
card+1, frame.addr, frame.count, status);
|
|
return -EIO;
|
|
}
|
|
|
|
inw(base);
|
|
insw(base, frame.bin_data, word_count);
|
|
InterruptTheCard(base);
|
|
|
|
for(i=0;i<=0x0f;i++); /* another wee bit of delay */
|
|
|
|
if (WaitTillCardIsFree(base))
|
|
return -EIO;
|
|
|
|
if ((status=inw(base+0x4))!=0) {
|
|
printk(KERN_ERR "ISILoad:Card%d verify got out of sync.Card Status:0x%x\n",card+1, status);
|
|
return -EIO;
|
|
}
|
|
|
|
if(copy_to_user(argp, &frame, sizeof(bin_frame)))
|
|
return -EFAULT;
|
|
return 0;
|
|
|
|
case MIOCTL_XFER_CTRL:
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
if (WaitTillCardIsFree(base))
|
|
return -EIO;
|
|
|
|
outw(0xf2, base);
|
|
outw(0x800, base);
|
|
outw(0x0, base);
|
|
outw(0x0, base);
|
|
InterruptTheCard(base);
|
|
outw(0x0, base+0x4); /* for ISI4608 cards */
|
|
|
|
isi_card[card].status |= FIRMWARE_LOADED;
|
|
return 0;
|
|
|
|
default:
|
|
#ifdef ISICOM_DEBUG
|
|
printk(KERN_DEBUG "ISILoad: Received Ioctl cmd 0x%x.\n", cmd);
|
|
#endif
|
|
return -ENOIOCTLCMD;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/*
|
|
* ISICOM Driver specific routines ...
|
|
*
|
|
*/
|
|
|
|
static inline int isicom_paranoia_check(struct isi_port const * port, char *name,
|
|
const char * routine)
|
|
{
|
|
#ifdef ISICOM_DEBUG
|
|
static const char * badmagic =
|
|
KERN_WARNING "ISICOM: Warning: bad isicom magic for dev %s in %s.\n";
|
|
static const char * badport =
|
|
KERN_WARNING "ISICOM: Warning: NULL isicom port for dev %s in %s.\n";
|
|
if (!port) {
|
|
printk(badport, name, routine);
|
|
return 1;
|
|
}
|
|
if (port->magic != ISICOM_MAGIC) {
|
|
printk(badmagic, name, routine);
|
|
return 1;
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Transmitter.
|
|
*
|
|
* We shovel data into the card buffers on a regular basis. The card
|
|
* will do the rest of the work for us.
|
|
*/
|
|
|
|
static void isicom_tx(unsigned long _data)
|
|
{
|
|
short count = (BOARD_COUNT-1), card, base;
|
|
short txcount, wrd, residue, word_count, cnt;
|
|
struct isi_port * port;
|
|
struct tty_struct * tty;
|
|
|
|
#ifdef ISICOM_DEBUG
|
|
++tx_count;
|
|
#endif
|
|
|
|
/* find next active board */
|
|
card = (prev_card + 1) & 0x0003;
|
|
while(count-- > 0) {
|
|
if (isi_card[card].status & BOARD_ACTIVE)
|
|
break;
|
|
card = (card + 1) & 0x0003;
|
|
}
|
|
if (!(isi_card[card].status & BOARD_ACTIVE))
|
|
goto sched_again;
|
|
|
|
prev_card = card;
|
|
|
|
count = isi_card[card].port_count;
|
|
port = isi_card[card].ports;
|
|
base = isi_card[card].base;
|
|
for (;count > 0;count--, port++) {
|
|
if (!lock_card_at_interrupt(&isi_card[card]))
|
|
continue;
|
|
/* port not active or tx disabled to force flow control */
|
|
if (!(port->flags & ASYNC_INITIALIZED) ||
|
|
!(port->status & ISI_TXOK))
|
|
unlock_card(&isi_card[card]);
|
|
continue;
|
|
|
|
tty = port->tty;
|
|
|
|
|
|
if(tty == NULL) {
|
|
unlock_card(&isi_card[card]);
|
|
continue;
|
|
}
|
|
|
|
txcount = min_t(short, TX_SIZE, port->xmit_cnt);
|
|
if (txcount <= 0 || tty->stopped || tty->hw_stopped) {
|
|
unlock_card(&isi_card[card]);
|
|
continue;
|
|
}
|
|
if (!(inw(base + 0x02) & (1 << port->channel))) {
|
|
unlock_card(&isi_card[card]);
|
|
continue;
|
|
}
|
|
#ifdef ISICOM_DEBUG
|
|
printk(KERN_DEBUG "ISICOM: txing %d bytes, port%d.\n",
|
|
txcount, port->channel+1);
|
|
#endif
|
|
outw((port->channel << isi_card[card].shift_count) | txcount
|
|
, base);
|
|
residue = NO;
|
|
wrd = 0;
|
|
while (1) {
|
|
cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE - port->xmit_tail));
|
|
if (residue == YES) {
|
|
residue = NO;
|
|
if (cnt > 0) {
|
|
wrd |= (port->xmit_buf[port->xmit_tail] << 8);
|
|
port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1);
|
|
port->xmit_cnt--;
|
|
txcount--;
|
|
cnt--;
|
|
outw(wrd, base);
|
|
}
|
|
else {
|
|
outw(wrd, base);
|
|
break;
|
|
}
|
|
}
|
|
if (cnt <= 0) break;
|
|
word_count = cnt >> 1;
|
|
outsw(base, port->xmit_buf+port->xmit_tail, word_count);
|
|
port->xmit_tail = (port->xmit_tail + (word_count << 1)) &
|
|
(SERIAL_XMIT_SIZE - 1);
|
|
txcount -= (word_count << 1);
|
|
port->xmit_cnt -= (word_count << 1);
|
|
if (cnt & 0x0001) {
|
|
residue = YES;
|
|
wrd = port->xmit_buf[port->xmit_tail];
|
|
port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1);
|
|
port->xmit_cnt--;
|
|
txcount--;
|
|
}
|
|
}
|
|
|
|
InterruptTheCard(base);
|
|
if (port->xmit_cnt <= 0)
|
|
port->status &= ~ISI_TXOK;
|
|
if (port->xmit_cnt <= WAKEUP_CHARS)
|
|
schedule_work(&port->bh_tqueue);
|
|
unlock_card(&isi_card[card]);
|
|
}
|
|
|
|
/* schedule another tx for hopefully in about 10ms */
|
|
sched_again:
|
|
if (!re_schedule)
|
|
return;
|
|
init_timer(&tx);
|
|
tx.expires = jiffies + HZ/100;
|
|
tx.data = 0;
|
|
tx.function = isicom_tx;
|
|
add_timer(&tx);
|
|
|
|
return;
|
|
}
|
|
|
|
/* Interrupt handlers */
|
|
|
|
|
|
static void isicom_bottomhalf(void * data)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) data;
|
|
struct tty_struct * tty = port->tty;
|
|
|
|
if (!tty)
|
|
return;
|
|
|
|
tty_wakeup(tty);
|
|
wake_up_interruptible(&tty->write_wait);
|
|
}
|
|
|
|
/*
|
|
* Main interrupt handler routine
|
|
*/
|
|
|
|
static irqreturn_t isicom_interrupt(int irq, void *dev_id,
|
|
struct pt_regs *regs)
|
|
{
|
|
struct isi_board * card;
|
|
struct isi_port * port;
|
|
struct tty_struct * tty;
|
|
unsigned short base, header, word_count, count;
|
|
unsigned char channel;
|
|
short byte_count;
|
|
|
|
card = (struct isi_board *) dev_id;
|
|
|
|
if (!card || !(card->status & FIRMWARE_LOADED))
|
|
return IRQ_NONE;
|
|
|
|
base = card->base;
|
|
spin_lock(&card->card_lock);
|
|
|
|
if (card->isa == NO) {
|
|
/*
|
|
* disable any interrupts from the PCI card and lower the
|
|
* interrupt line
|
|
*/
|
|
outw(0x8000, base+0x04);
|
|
ClearInterrupt(base);
|
|
}
|
|
|
|
inw(base); /* get the dummy word out */
|
|
header = inw(base);
|
|
channel = (header & 0x7800) >> card->shift_count;
|
|
byte_count = header & 0xff;
|
|
|
|
if (channel + 1 > card->port_count) {
|
|
printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%x): %d(channel) > port_count.\n",
|
|
base, channel+1);
|
|
if (card->isa)
|
|
ClearInterrupt(base);
|
|
else
|
|
outw(0x0000, base+0x04); /* enable interrupts */
|
|
spin_unlock(&card->card_lock);
|
|
return IRQ_HANDLED;
|
|
}
|
|
port = card->ports + channel;
|
|
if (!(port->flags & ASYNC_INITIALIZED)) {
|
|
if (card->isa)
|
|
ClearInterrupt(base);
|
|
else
|
|
outw(0x0000, base+0x04); /* enable interrupts */
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
tty = port->tty;
|
|
if (tty == NULL) {
|
|
word_count = byte_count >> 1;
|
|
while(byte_count > 1) {
|
|
inw(base);
|
|
byte_count -= 2;
|
|
}
|
|
if (byte_count & 0x01)
|
|
inw(base);
|
|
if (card->isa == YES)
|
|
ClearInterrupt(base);
|
|
else
|
|
outw(0x0000, base+0x04); /* enable interrupts */
|
|
spin_unlock(&card->card_lock);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
if (header & 0x8000) { /* Status Packet */
|
|
header = inw(base);
|
|
switch(header & 0xff) {
|
|
case 0: /* Change in EIA signals */
|
|
|
|
if (port->flags & ASYNC_CHECK_CD) {
|
|
if (port->status & ISI_DCD) {
|
|
if (!(header & ISI_DCD)) {
|
|
/* Carrier has been lost */
|
|
#ifdef ISICOM_DEBUG
|
|
printk(KERN_DEBUG "ISICOM: interrupt: DCD->low.\n");
|
|
#endif
|
|
port->status &= ~ISI_DCD;
|
|
schedule_work(&port->hangup_tq);
|
|
}
|
|
}
|
|
else {
|
|
if (header & ISI_DCD) {
|
|
/* Carrier has been detected */
|
|
#ifdef ISICOM_DEBUG
|
|
printk(KERN_DEBUG "ISICOM: interrupt: DCD->high.\n");
|
|
#endif
|
|
port->status |= ISI_DCD;
|
|
wake_up_interruptible(&port->open_wait);
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
if (header & ISI_DCD)
|
|
port->status |= ISI_DCD;
|
|
else
|
|
port->status &= ~ISI_DCD;
|
|
}
|
|
|
|
if (port->flags & ASYNC_CTS_FLOW) {
|
|
if (port->tty->hw_stopped) {
|
|
if (header & ISI_CTS) {
|
|
port->tty->hw_stopped = 0;
|
|
/* start tx ing */
|
|
port->status |= (ISI_TXOK | ISI_CTS);
|
|
schedule_work(&port->bh_tqueue);
|
|
}
|
|
}
|
|
else {
|
|
if (!(header & ISI_CTS)) {
|
|
port->tty->hw_stopped = 1;
|
|
/* stop tx ing */
|
|
port->status &= ~(ISI_TXOK | ISI_CTS);
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
if (header & ISI_CTS)
|
|
port->status |= ISI_CTS;
|
|
else
|
|
port->status &= ~ISI_CTS;
|
|
}
|
|
|
|
if (header & ISI_DSR)
|
|
port->status |= ISI_DSR;
|
|
else
|
|
port->status &= ~ISI_DSR;
|
|
|
|
if (header & ISI_RI)
|
|
port->status |= ISI_RI;
|
|
else
|
|
port->status &= ~ISI_RI;
|
|
|
|
break;
|
|
|
|
case 1: /* Received Break !!! */
|
|
if (tty->flip.count >= TTY_FLIPBUF_SIZE)
|
|
break;
|
|
*tty->flip.flag_buf_ptr++ = TTY_BREAK;
|
|
*tty->flip.char_buf_ptr++ = 0;
|
|
tty->flip.count++;
|
|
if (port->flags & ASYNC_SAK)
|
|
do_SAK(tty);
|
|
schedule_delayed_work(&tty->flip.work, 1);
|
|
break;
|
|
|
|
case 2: /* Statistics */
|
|
printk(KERN_DEBUG "ISICOM: isicom_interrupt: stats!!!.\n");
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_WARNING "ISICOM: Intr: Unknown code in status packet.\n");
|
|
break;
|
|
}
|
|
}
|
|
else { /* Data Packet */
|
|
count = min_t(unsigned short, byte_count, (TTY_FLIPBUF_SIZE - tty->flip.count));
|
|
#ifdef ISICOM_DEBUG
|
|
printk(KERN_DEBUG "ISICOM: Intr: Can rx %d of %d bytes.\n",
|
|
count, byte_count);
|
|
#endif
|
|
word_count = count >> 1;
|
|
insw(base, tty->flip.char_buf_ptr, word_count);
|
|
tty->flip.char_buf_ptr += (word_count << 1);
|
|
byte_count -= (word_count << 1);
|
|
if (count & 0x0001) {
|
|
*tty->flip.char_buf_ptr++ = (char)(inw(base) & 0xff);
|
|
byte_count -= 2;
|
|
}
|
|
memset(tty->flip.flag_buf_ptr, 0, count);
|
|
tty->flip.flag_buf_ptr += count;
|
|
tty->flip.count += count;
|
|
|
|
if (byte_count > 0) {
|
|
printk(KERN_DEBUG "ISICOM: Intr(0x%x:%d): Flip buffer overflow! dropping bytes...\n",
|
|
base, channel+1);
|
|
while(byte_count > 0) { /* drain out unread xtra data */
|
|
inw(base);
|
|
byte_count -= 2;
|
|
}
|
|
}
|
|
schedule_delayed_work(&tty->flip.work, 1);
|
|
}
|
|
if (card->isa == YES)
|
|
ClearInterrupt(base);
|
|
else
|
|
outw(0x0000, base+0x04); /* enable interrupts */
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void isicom_config_port(struct isi_port * port)
|
|
{
|
|
struct isi_board * card = port->card;
|
|
struct tty_struct * tty;
|
|
unsigned long baud;
|
|
unsigned short channel_setup, base = card->base;
|
|
unsigned short channel = port->channel, shift_count = card->shift_count;
|
|
unsigned char flow_ctrl;
|
|
|
|
if (!(tty = port->tty) || !tty->termios)
|
|
return;
|
|
baud = C_BAUD(tty);
|
|
if (baud & CBAUDEX) {
|
|
baud &= ~CBAUDEX;
|
|
|
|
/* if CBAUDEX bit is on and the baud is set to either 50 or 75
|
|
* then the card is programmed for 57.6Kbps or 115Kbps
|
|
* respectively.
|
|
*/
|
|
|
|
if (baud < 1 || baud > 2)
|
|
port->tty->termios->c_cflag &= ~CBAUDEX;
|
|
else
|
|
baud += 15;
|
|
}
|
|
if (baud == 15) {
|
|
|
|
/* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set
|
|
* by the set_serial_info ioctl ... this is done by
|
|
* the 'setserial' utility.
|
|
*/
|
|
|
|
if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
|
|
baud++; /* 57.6 Kbps */
|
|
if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
|
|
baud +=2; /* 115 Kbps */
|
|
}
|
|
if (linuxb_to_isib[baud] == -1) {
|
|
/* hang up */
|
|
drop_dtr(port);
|
|
return;
|
|
}
|
|
else
|
|
raise_dtr(port);
|
|
|
|
if (lock_card(card)) {
|
|
outw(0x8000 | (channel << shift_count) |0x03, base);
|
|
outw(linuxb_to_isib[baud] << 8 | 0x03, base);
|
|
channel_setup = 0;
|
|
switch(C_CSIZE(tty)) {
|
|
case CS5:
|
|
channel_setup |= ISICOM_CS5;
|
|
break;
|
|
case CS6:
|
|
channel_setup |= ISICOM_CS6;
|
|
break;
|
|
case CS7:
|
|
channel_setup |= ISICOM_CS7;
|
|
break;
|
|
case CS8:
|
|
channel_setup |= ISICOM_CS8;
|
|
break;
|
|
}
|
|
|
|
if (C_CSTOPB(tty))
|
|
channel_setup |= ISICOM_2SB;
|
|
if (C_PARENB(tty)) {
|
|
channel_setup |= ISICOM_EVPAR;
|
|
if (C_PARODD(tty))
|
|
channel_setup |= ISICOM_ODPAR;
|
|
}
|
|
outw(channel_setup, base);
|
|
InterruptTheCard(base);
|
|
unlock_card(card);
|
|
}
|
|
if (C_CLOCAL(tty))
|
|
port->flags &= ~ASYNC_CHECK_CD;
|
|
else
|
|
port->flags |= ASYNC_CHECK_CD;
|
|
|
|
/* flow control settings ...*/
|
|
flow_ctrl = 0;
|
|
port->flags &= ~ASYNC_CTS_FLOW;
|
|
if (C_CRTSCTS(tty)) {
|
|
port->flags |= ASYNC_CTS_FLOW;
|
|
flow_ctrl |= ISICOM_CTSRTS;
|
|
}
|
|
if (I_IXON(tty))
|
|
flow_ctrl |= ISICOM_RESPOND_XONXOFF;
|
|
if (I_IXOFF(tty))
|
|
flow_ctrl |= ISICOM_INITIATE_XONXOFF;
|
|
|
|
if (lock_card(card)) {
|
|
outw(0x8000 | (channel << shift_count) |0x04, base);
|
|
outw(flow_ctrl << 8 | 0x05, base);
|
|
outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base);
|
|
InterruptTheCard(base);
|
|
unlock_card(card);
|
|
}
|
|
|
|
/* rx enabled -> enable port for rx on the card */
|
|
if (C_CREAD(tty)) {
|
|
card->port_status |= (1 << channel);
|
|
outw(card->port_status, base + 0x02);
|
|
}
|
|
}
|
|
|
|
/* open et all */
|
|
|
|
static inline void isicom_setup_board(struct isi_board * bp)
|
|
{
|
|
int channel;
|
|
struct isi_port * port;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&bp->card_lock, flags);
|
|
if (bp->status & BOARD_ACTIVE) {
|
|
spin_unlock_irqrestore(&bp->card_lock, flags);
|
|
return;
|
|
}
|
|
port = bp->ports;
|
|
bp->status |= BOARD_ACTIVE;
|
|
spin_unlock_irqrestore(&bp->card_lock, flags);
|
|
for(channel = 0; channel < bp->port_count; channel++, port++)
|
|
drop_dtr_rts(port);
|
|
return;
|
|
}
|
|
|
|
static int isicom_setup_port(struct isi_port * port)
|
|
{
|
|
struct isi_board * card = port->card;
|
|
unsigned long flags;
|
|
|
|
if (port->flags & ASYNC_INITIALIZED) {
|
|
return 0;
|
|
}
|
|
if (!port->xmit_buf) {
|
|
unsigned long page;
|
|
|
|
if (!(page = get_zeroed_page(GFP_KERNEL)))
|
|
return -ENOMEM;
|
|
|
|
if (port->xmit_buf) {
|
|
free_page(page);
|
|
return -ERESTARTSYS;
|
|
}
|
|
port->xmit_buf = (unsigned char *) page;
|
|
}
|
|
|
|
spin_lock_irqsave(&card->card_lock, flags);
|
|
if (port->tty)
|
|
clear_bit(TTY_IO_ERROR, &port->tty->flags);
|
|
if (port->count == 1)
|
|
card->count++;
|
|
|
|
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
|
|
|
|
/* discard any residual data */
|
|
kill_queue(port, ISICOM_KILLTX | ISICOM_KILLRX);
|
|
|
|
isicom_config_port(port);
|
|
port->flags |= ASYNC_INITIALIZED;
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int block_til_ready(struct tty_struct * tty, struct file * filp, struct isi_port * port)
|
|
{
|
|
struct isi_board * card = port->card;
|
|
int do_clocal = 0, retval;
|
|
unsigned long flags;
|
|
DECLARE_WAITQUEUE(wait, current);
|
|
|
|
/* block if port is in the process of being closed */
|
|
|
|
if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) {
|
|
#ifdef ISICOM_DEBUG
|
|
printk(KERN_DEBUG "ISICOM: block_til_ready: close in progress.\n");
|
|
#endif
|
|
interruptible_sleep_on(&port->close_wait);
|
|
if (port->flags & ASYNC_HUP_NOTIFY)
|
|
return -EAGAIN;
|
|
else
|
|
return -ERESTARTSYS;
|
|
}
|
|
|
|
/* if non-blocking mode is set ... */
|
|
|
|
if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
|
|
#ifdef ISICOM_DEBUG
|
|
printk(KERN_DEBUG "ISICOM: block_til_ready: non-block mode.\n");
|
|
#endif
|
|
port->flags |= ASYNC_NORMAL_ACTIVE;
|
|
return 0;
|
|
}
|
|
|
|
if (C_CLOCAL(tty))
|
|
do_clocal = 1;
|
|
|
|
/* block waiting for DCD to be asserted, and while
|
|
callout dev is busy */
|
|
retval = 0;
|
|
add_wait_queue(&port->open_wait, &wait);
|
|
|
|
spin_lock_irqsave(&card->card_lock, flags);
|
|
if (!tty_hung_up_p(filp))
|
|
port->count--;
|
|
port->blocked_open++;
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
|
|
while (1) {
|
|
raise_dtr_rts(port);
|
|
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) {
|
|
if (port->flags & ASYNC_HUP_NOTIFY)
|
|
retval = -EAGAIN;
|
|
else
|
|
retval = -ERESTARTSYS;
|
|
break;
|
|
}
|
|
if (!(port->flags & ASYNC_CLOSING) &&
|
|
(do_clocal || (port->status & ISI_DCD))) {
|
|
break;
|
|
}
|
|
if (signal_pending(current)) {
|
|
retval = -ERESTARTSYS;
|
|
break;
|
|
}
|
|
schedule();
|
|
}
|
|
set_current_state(TASK_RUNNING);
|
|
remove_wait_queue(&port->open_wait, &wait);
|
|
spin_lock_irqsave(&card->card_lock, flags);
|
|
if (!tty_hung_up_p(filp))
|
|
port->count++;
|
|
port->blocked_open--;
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
if (retval)
|
|
return retval;
|
|
port->flags |= ASYNC_NORMAL_ACTIVE;
|
|
return 0;
|
|
}
|
|
|
|
static int isicom_open(struct tty_struct * tty, struct file * filp)
|
|
{
|
|
struct isi_port * port;
|
|
struct isi_board * card;
|
|
unsigned int line, board;
|
|
int error;
|
|
|
|
line = tty->index;
|
|
if (line < 0 || line > PORT_COUNT-1)
|
|
return -ENODEV;
|
|
board = BOARD(line);
|
|
card = &isi_card[board];
|
|
|
|
if (!(card->status & FIRMWARE_LOADED))
|
|
return -ENODEV;
|
|
|
|
/* open on a port greater than the port count for the card !!! */
|
|
if (line > ((board * 16) + card->port_count - 1))
|
|
return -ENODEV;
|
|
|
|
port = &isi_ports[line];
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_open"))
|
|
return -ENODEV;
|
|
|
|
isicom_setup_board(card);
|
|
|
|
port->count++;
|
|
tty->driver_data = port;
|
|
port->tty = tty;
|
|
if ((error = isicom_setup_port(port))!=0)
|
|
return error;
|
|
if ((error = block_til_ready(tty, filp, port))!=0)
|
|
return error;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* close et all */
|
|
|
|
static inline void isicom_shutdown_board(struct isi_board * bp)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&bp->card_lock, flags);
|
|
if (bp->status & BOARD_ACTIVE) {
|
|
bp->status &= ~BOARD_ACTIVE;
|
|
}
|
|
spin_unlock_irqrestore(&bp->card_lock, flags);
|
|
}
|
|
|
|
static void isicom_shutdown_port(struct isi_port * port)
|
|
{
|
|
struct isi_board * card = port->card;
|
|
struct tty_struct * tty;
|
|
unsigned long flags;
|
|
|
|
tty = port->tty;
|
|
|
|
spin_lock_irqsave(&card->card_lock, flags);
|
|
if (!(port->flags & ASYNC_INITIALIZED)) {
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
return;
|
|
}
|
|
if (port->xmit_buf) {
|
|
free_page((unsigned long) port->xmit_buf);
|
|
port->xmit_buf = NULL;
|
|
}
|
|
port->flags &= ~ASYNC_INITIALIZED;
|
|
/* 3rd October 2000 : Vinayak P Risbud */
|
|
port->tty = NULL;
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
|
|
/*Fix done by Anil .S on 30-04-2001
|
|
remote login through isi port has dtr toggle problem
|
|
due to which the carrier drops before the password prompt
|
|
appears on the remote end. Now we drop the dtr only if the
|
|
HUPCL(Hangup on close) flag is set for the tty*/
|
|
|
|
if (C_HUPCL(tty))
|
|
/* drop dtr on this port */
|
|
drop_dtr(port);
|
|
|
|
/* any other port uninits */
|
|
if (tty)
|
|
set_bit(TTY_IO_ERROR, &tty->flags);
|
|
|
|
if (--card->count < 0) {
|
|
printk(KERN_DEBUG "ISICOM: isicom_shutdown_port: bad board(0x%x) count %d.\n",
|
|
card->base, card->count);
|
|
card->count = 0;
|
|
}
|
|
|
|
/* last port was closed , shutdown that boad too */
|
|
if(C_HUPCL(tty)) {
|
|
if (!card->count)
|
|
isicom_shutdown_board(card);
|
|
}
|
|
}
|
|
|
|
static void isicom_close(struct tty_struct * tty, struct file * filp)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
|
struct isi_board * card = port->card;
|
|
unsigned long flags;
|
|
|
|
if (!port)
|
|
return;
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_close"))
|
|
return;
|
|
|
|
#ifdef ISICOM_DEBUG
|
|
printk(KERN_DEBUG "ISICOM: Close start!!!.\n");
|
|
#endif
|
|
|
|
spin_lock_irqsave(&card->card_lock, flags);
|
|
if (tty_hung_up_p(filp)) {
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
return;
|
|
}
|
|
|
|
if (tty->count == 1 && port->count != 1) {
|
|
printk(KERN_WARNING "ISICOM:(0x%x) isicom_close: bad port count"
|
|
"tty->count = 1 port count = %d.\n",
|
|
card->base, port->count);
|
|
port->count = 1;
|
|
}
|
|
if (--port->count < 0) {
|
|
printk(KERN_WARNING "ISICOM:(0x%x) isicom_close: bad port count for"
|
|
"channel%d = %d", card->base, port->channel,
|
|
port->count);
|
|
port->count = 0;
|
|
}
|
|
|
|
if (port->count) {
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
return;
|
|
}
|
|
port->flags |= ASYNC_CLOSING;
|
|
tty->closing = 1;
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
|
|
if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
|
|
tty_wait_until_sent(tty, port->closing_wait);
|
|
/* indicate to the card that no more data can be received
|
|
on this port */
|
|
spin_lock_irqsave(&card->card_lock, flags);
|
|
if (port->flags & ASYNC_INITIALIZED) {
|
|
card->port_status &= ~(1 << port->channel);
|
|
outw(card->port_status, card->base + 0x02);
|
|
}
|
|
isicom_shutdown_port(port);
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
|
|
if (tty->driver->flush_buffer)
|
|
tty->driver->flush_buffer(tty);
|
|
tty_ldisc_flush(tty);
|
|
|
|
spin_lock_irqsave(&card->card_lock, flags);
|
|
tty->closing = 0;
|
|
|
|
if (port->blocked_open) {
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
if (port->close_delay) {
|
|
#ifdef ISICOM_DEBUG
|
|
printk(KERN_DEBUG "ISICOM: scheduling until time out.\n");
|
|
#endif
|
|
msleep_interruptible(jiffies_to_msecs(port->close_delay));
|
|
}
|
|
spin_lock_irqsave(&card->card_lock, flags);
|
|
wake_up_interruptible(&port->open_wait);
|
|
}
|
|
port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
|
|
wake_up_interruptible(&port->close_wait);
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
}
|
|
|
|
/* write et all */
|
|
static int isicom_write(struct tty_struct * tty,
|
|
const unsigned char * buf, int count)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
|
struct isi_board * card = port->card;
|
|
unsigned long flags;
|
|
int cnt, total = 0;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_write"))
|
|
return 0;
|
|
|
|
if (!tty || !port->xmit_buf || !tmp_buf)
|
|
return 0;
|
|
|
|
spin_lock_irqsave(&card->card_lock, flags);
|
|
|
|
while(1) {
|
|
cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
|
|
SERIAL_XMIT_SIZE - port->xmit_head));
|
|
if (cnt <= 0)
|
|
break;
|
|
|
|
memcpy(port->xmit_buf + port->xmit_head, buf, cnt);
|
|
port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE - 1);
|
|
port->xmit_cnt += cnt;
|
|
buf += cnt;
|
|
count -= cnt;
|
|
total += cnt;
|
|
}
|
|
if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped)
|
|
port->status |= ISI_TXOK;
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
return total;
|
|
}
|
|
|
|
/* put_char et all */
|
|
static void isicom_put_char(struct tty_struct * tty, unsigned char ch)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
|
struct isi_board * card = port->card;
|
|
unsigned long flags;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_put_char"))
|
|
return;
|
|
|
|
if (!tty || !port->xmit_buf)
|
|
return;
|
|
|
|
spin_lock_irqsave(&card->card_lock, flags);
|
|
if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
return;
|
|
}
|
|
|
|
port->xmit_buf[port->xmit_head++] = ch;
|
|
port->xmit_head &= (SERIAL_XMIT_SIZE - 1);
|
|
port->xmit_cnt++;
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
}
|
|
|
|
/* flush_chars et all */
|
|
static void isicom_flush_chars(struct tty_struct * tty)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars"))
|
|
return;
|
|
|
|
if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || !port->xmit_buf)
|
|
return;
|
|
|
|
/* this tells the transmitter to consider this port for
|
|
data output to the card ... that's the best we can do. */
|
|
port->status |= ISI_TXOK;
|
|
}
|
|
|
|
/* write_room et all */
|
|
static int isicom_write_room(struct tty_struct * tty)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
|
int free;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_write_room"))
|
|
return 0;
|
|
|
|
free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
|
|
if (free < 0)
|
|
free = 0;
|
|
return free;
|
|
}
|
|
|
|
/* chars_in_buffer et all */
|
|
static int isicom_chars_in_buffer(struct tty_struct * tty)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer"))
|
|
return 0;
|
|
return port->xmit_cnt;
|
|
}
|
|
|
|
/* ioctl et all */
|
|
static inline void isicom_send_break(struct isi_port * port, unsigned long length)
|
|
{
|
|
struct isi_board * card = port->card;
|
|
unsigned short base = card->base;
|
|
|
|
if(!lock_card(card))
|
|
return;
|
|
|
|
outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base);
|
|
outw((length & 0xff) << 8 | 0x00, base);
|
|
outw((length & 0xff00), base);
|
|
InterruptTheCard(base);
|
|
|
|
unlock_card(card);
|
|
}
|
|
|
|
static int isicom_tiocmget(struct tty_struct *tty, struct file *file)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
|
/* just send the port status */
|
|
unsigned short status = port->status;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
|
|
return -ENODEV;
|
|
|
|
return ((status & ISI_RTS) ? TIOCM_RTS : 0) |
|
|
((status & ISI_DTR) ? TIOCM_DTR : 0) |
|
|
((status & ISI_DCD) ? TIOCM_CAR : 0) |
|
|
((status & ISI_DSR) ? TIOCM_DSR : 0) |
|
|
((status & ISI_CTS) ? TIOCM_CTS : 0) |
|
|
((status & ISI_RI ) ? TIOCM_RI : 0);
|
|
}
|
|
|
|
static int isicom_tiocmset(struct tty_struct *tty, struct file *file,
|
|
unsigned int set, unsigned int clear)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
|
|
return -ENODEV;
|
|
|
|
if (set & TIOCM_RTS)
|
|
raise_rts(port);
|
|
if (set & TIOCM_DTR)
|
|
raise_dtr(port);
|
|
|
|
if (clear & TIOCM_RTS)
|
|
drop_rts(port);
|
|
if (clear & TIOCM_DTR)
|
|
drop_dtr(port);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int isicom_set_serial_info(struct isi_port * port,
|
|
struct serial_struct __user *info)
|
|
{
|
|
struct serial_struct newinfo;
|
|
int reconfig_port;
|
|
|
|
if(copy_from_user(&newinfo, info, sizeof(newinfo)))
|
|
return -EFAULT;
|
|
|
|
reconfig_port = ((port->flags & ASYNC_SPD_MASK) !=
|
|
(newinfo.flags & ASYNC_SPD_MASK));
|
|
|
|
if (!capable(CAP_SYS_ADMIN)) {
|
|
if ((newinfo.close_delay != port->close_delay) ||
|
|
(newinfo.closing_wait != port->closing_wait) ||
|
|
((newinfo.flags & ~ASYNC_USR_MASK) !=
|
|
(port->flags & ~ASYNC_USR_MASK)))
|
|
return -EPERM;
|
|
port->flags = ((port->flags & ~ ASYNC_USR_MASK) |
|
|
(newinfo.flags & ASYNC_USR_MASK));
|
|
}
|
|
else {
|
|
port->close_delay = newinfo.close_delay;
|
|
port->closing_wait = newinfo.closing_wait;
|
|
port->flags = ((port->flags & ~ASYNC_FLAGS) |
|
|
(newinfo.flags & ASYNC_FLAGS));
|
|
}
|
|
if (reconfig_port) {
|
|
isicom_config_port(port);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int isicom_get_serial_info(struct isi_port * port,
|
|
struct serial_struct __user *info)
|
|
{
|
|
struct serial_struct out_info;
|
|
|
|
memset(&out_info, 0, sizeof(out_info));
|
|
/* out_info.type = ? */
|
|
out_info.line = port - isi_ports;
|
|
out_info.port = port->card->base;
|
|
out_info.irq = port->card->irq;
|
|
out_info.flags = port->flags;
|
|
/* out_info.baud_base = ? */
|
|
out_info.close_delay = port->close_delay;
|
|
out_info.closing_wait = port->closing_wait;
|
|
if(copy_to_user(info, &out_info, sizeof(out_info)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int isicom_ioctl(struct tty_struct * tty, struct file * filp,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
|
void __user *argp = (void __user *)arg;
|
|
int retval;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
|
|
return -ENODEV;
|
|
|
|
switch(cmd) {
|
|
case TCSBRK:
|
|
retval = tty_check_change(tty);
|
|
if (retval)
|
|
return retval;
|
|
tty_wait_until_sent(tty, 0);
|
|
if (!arg)
|
|
isicom_send_break(port, HZ/4);
|
|
return 0;
|
|
|
|
case TCSBRKP:
|
|
retval = tty_check_change(tty);
|
|
if (retval)
|
|
return retval;
|
|
tty_wait_until_sent(tty, 0);
|
|
isicom_send_break(port, arg ? arg * (HZ/10) : HZ/4);
|
|
return 0;
|
|
|
|
case TIOCGSOFTCAR:
|
|
return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp);
|
|
|
|
case TIOCSSOFTCAR:
|
|
if(get_user(arg, (unsigned long __user *) argp))
|
|
return -EFAULT;
|
|
tty->termios->c_cflag =
|
|
((tty->termios->c_cflag & ~CLOCAL) |
|
|
(arg ? CLOCAL : 0));
|
|
return 0;
|
|
|
|
case TIOCGSERIAL:
|
|
return isicom_get_serial_info(port, argp);
|
|
|
|
case TIOCSSERIAL:
|
|
return isicom_set_serial_info(port, argp);
|
|
|
|
default:
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* set_termios et all */
|
|
static void isicom_set_termios(struct tty_struct * tty, struct termios * old_termios)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_set_termios"))
|
|
return;
|
|
|
|
if (tty->termios->c_cflag == old_termios->c_cflag &&
|
|
tty->termios->c_iflag == old_termios->c_iflag)
|
|
return;
|
|
|
|
isicom_config_port(port);
|
|
|
|
if ((old_termios->c_cflag & CRTSCTS) &&
|
|
!(tty->termios->c_cflag & CRTSCTS)) {
|
|
tty->hw_stopped = 0;
|
|
isicom_start(tty);
|
|
}
|
|
}
|
|
|
|
/* throttle et all */
|
|
static void isicom_throttle(struct tty_struct * tty)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
|
struct isi_board * card = port->card;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_throttle"))
|
|
return;
|
|
|
|
/* tell the card that this port cannot handle any more data for now */
|
|
card->port_status &= ~(1 << port->channel);
|
|
outw(card->port_status, card->base + 0x02);
|
|
}
|
|
|
|
/* unthrottle et all */
|
|
static void isicom_unthrottle(struct tty_struct * tty)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
|
struct isi_board * card = port->card;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle"))
|
|
return;
|
|
|
|
/* tell the card that this port is ready to accept more data */
|
|
card->port_status |= (1 << port->channel);
|
|
outw(card->port_status, card->base + 0x02);
|
|
}
|
|
|
|
/* stop et all */
|
|
static void isicom_stop(struct tty_struct * tty)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_stop"))
|
|
return;
|
|
|
|
/* this tells the transmitter not to consider this port for
|
|
data output to the card. */
|
|
port->status &= ~ISI_TXOK;
|
|
}
|
|
|
|
/* start et all */
|
|
static void isicom_start(struct tty_struct * tty)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_start"))
|
|
return;
|
|
|
|
/* this tells the transmitter to consider this port for
|
|
data output to the card. */
|
|
port->status |= ISI_TXOK;
|
|
}
|
|
|
|
/* hangup et all */
|
|
static void do_isicom_hangup(void * data)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) data;
|
|
struct tty_struct * tty;
|
|
|
|
tty = port->tty;
|
|
if (tty)
|
|
tty_hangup(tty);
|
|
}
|
|
|
|
static void isicom_hangup(struct tty_struct * tty)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_hangup"))
|
|
return;
|
|
|
|
isicom_shutdown_port(port);
|
|
port->count = 0;
|
|
port->flags &= ~ASYNC_NORMAL_ACTIVE;
|
|
port->tty = NULL;
|
|
wake_up_interruptible(&port->open_wait);
|
|
}
|
|
|
|
/* flush_buffer et all */
|
|
static void isicom_flush_buffer(struct tty_struct * tty)
|
|
{
|
|
struct isi_port * port = (struct isi_port *) tty->driver_data;
|
|
struct isi_board * card = port->card;
|
|
unsigned long flags;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer"))
|
|
return;
|
|
|
|
spin_lock_irqsave(&card->card_lock, flags);
|
|
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
|
|
wake_up_interruptible(&tty->write_wait);
|
|
tty_wakeup(tty);
|
|
}
|
|
|
|
|
|
static int __init register_ioregion(void)
|
|
{
|
|
int count, done=0;
|
|
for (count=0; count < BOARD_COUNT; count++ ) {
|
|
if (isi_card[count].base)
|
|
if (!request_region(isi_card[count].base,16,ISICOM_NAME)) {
|
|
printk(KERN_DEBUG "ISICOM: I/O Region 0x%x-0x%x is busy. Card%d will be disabled.\n",
|
|
isi_card[count].base,isi_card[count].base+15,count+1);
|
|
isi_card[count].base=0;
|
|
done++;
|
|
}
|
|
}
|
|
return done;
|
|
}
|
|
|
|
static void __exit unregister_ioregion(void)
|
|
{
|
|
int count;
|
|
for (count=0; count < BOARD_COUNT; count++ )
|
|
if (isi_card[count].base) {
|
|
release_region(isi_card[count].base,16);
|
|
#ifdef ISICOM_DEBUG
|
|
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);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
static struct tty_operations isicom_ops = {
|
|
.open = isicom_open,
|
|
.close = isicom_close,
|
|
.write = isicom_write,
|
|
.put_char = isicom_put_char,
|
|
.flush_chars = isicom_flush_chars,
|
|
.write_room = isicom_write_room,
|
|
.chars_in_buffer = isicom_chars_in_buffer,
|
|
.ioctl = isicom_ioctl,
|
|
.set_termios = isicom_set_termios,
|
|
.throttle = isicom_throttle,
|
|
.unthrottle = isicom_unthrottle,
|
|
.stop = isicom_stop,
|
|
.start = isicom_start,
|
|
.hangup = isicom_hangup,
|
|
.flush_buffer = isicom_flush_buffer,
|
|
.tiocmget = isicom_tiocmget,
|
|
.tiocmset = isicom_tiocmset,
|
|
};
|
|
|
|
static int __init register_drivers(void)
|
|
{
|
|
int error;
|
|
|
|
/* tty driver structure initialization */
|
|
isicom_normal = alloc_tty_driver(PORT_COUNT);
|
|
if (!isicom_normal)
|
|
return -ENOMEM;
|
|
|
|
isicom_normal->owner = THIS_MODULE;
|
|
isicom_normal->name = "ttyM";
|
|
isicom_normal->devfs_name = "isicom/";
|
|
isicom_normal->major = ISICOM_NMAJOR;
|
|
isicom_normal->minor_start = 0;
|
|
isicom_normal->type = TTY_DRIVER_TYPE_SERIAL;
|
|
isicom_normal->subtype = SERIAL_TYPE_NORMAL;
|
|
isicom_normal->init_termios = tty_std_termios;
|
|
isicom_normal->init_termios.c_cflag =
|
|
B9600 | CS8 | CREAD | HUPCL |CLOCAL;
|
|
isicom_normal->flags = TTY_DRIVER_REAL_RAW;
|
|
tty_set_operations(isicom_normal, &isicom_ops);
|
|
|
|
if ((error=tty_register_driver(isicom_normal))!=0) {
|
|
printk(KERN_DEBUG "ISICOM: Couldn't register the dialin driver, error=%d\n",
|
|
error);
|
|
put_tty_driver(isicom_normal);
|
|
return error;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void __exit unregister_drivers(void)
|
|
{
|
|
int error = tty_unregister_driver(isicom_normal);
|
|
if (error)
|
|
printk(KERN_DEBUG "ISICOM: couldn't unregister normal driver error=%d.\n",error);
|
|
put_tty_driver(isicom_normal);
|
|
}
|
|
|
|
static int __init register_isr(void)
|
|
{
|
|
int count, done=0;
|
|
unsigned long irqflags;
|
|
|
|
for (count=0; count < BOARD_COUNT; count++ ) {
|
|
if (isi_card[count].base) {
|
|
irqflags = (isi_card[count].isa == YES) ?
|
|
SA_INTERRUPT :
|
|
(SA_INTERRUPT | SA_SHIRQ);
|
|
|
|
if (request_irq(isi_card[count].irq,
|
|
isicom_interrupt,
|
|
irqflags,
|
|
ISICOM_NAME, &isi_card[count])) {
|
|
|
|
printk(KERN_WARNING "ISICOM: Could not"
|
|
" install handler at Irq %d."
|
|
" Card%d will be disabled.\n",
|
|
isi_card[count].irq, count+1);
|
|
|
|
release_region(isi_card[count].base,16);
|
|
isi_card[count].base=0;
|
|
}
|
|
else
|
|
done++;
|
|
}
|
|
}
|
|
return done;
|
|
}
|
|
|
|
static void __exit unregister_isr(void)
|
|
{
|
|
int count;
|
|
|
|
for (count=0; count < BOARD_COUNT; count++ ) {
|
|
if (isi_card[count].base)
|
|
free_irq(isi_card[count].irq, &isi_card[count]);
|
|
}
|
|
}
|
|
|
|
static int __init isicom_init(void)
|
|
{
|
|
int card, channel, base;
|
|
struct isi_port * port;
|
|
unsigned long page;
|
|
|
|
if (!tmp_buf) {
|
|
page = get_zeroed_page(GFP_KERNEL);
|
|
if (!page) {
|
|
#ifdef ISICOM_DEBUG
|
|
printk(KERN_DEBUG "ISICOM: Couldn't allocate page for tmp_buf.\n");
|
|
#else
|
|
printk(KERN_ERR "ISICOM: Not enough memory...\n");
|
|
#endif
|
|
return 0;
|
|
}
|
|
tmp_buf = (unsigned char *) page;
|
|
}
|
|
|
|
if (!register_ioregion())
|
|
{
|
|
printk(KERN_ERR "ISICOM: All required I/O space found busy.\n");
|
|
free_page((unsigned long)tmp_buf);
|
|
return 0;
|
|
}
|
|
if (register_drivers())
|
|
{
|
|
unregister_ioregion();
|
|
free_page((unsigned long)tmp_buf);
|
|
return 0;
|
|
}
|
|
if (!register_isr())
|
|
{
|
|
unregister_drivers();
|
|
/* ioports already uregistered in register_isr */
|
|
free_page((unsigned long)tmp_buf);
|
|
return 0;
|
|
}
|
|
|
|
memset(isi_ports, 0, sizeof(isi_ports));
|
|
for (card = 0; card < BOARD_COUNT; card++) {
|
|
port = &isi_ports[card * 16];
|
|
isi_card[card].ports = port;
|
|
spin_lock_init(&isi_card[card].card_lock);
|
|
base = isi_card[card].base;
|
|
for (channel = 0; channel < 16; channel++, port++) {
|
|
port->magic = ISICOM_MAGIC;
|
|
port->card = &isi_card[card];
|
|
port->channel = channel;
|
|
port->close_delay = 50 * HZ/100;
|
|
port->closing_wait = 3000 * HZ/100;
|
|
INIT_WORK(&port->hangup_tq, do_isicom_hangup, port);
|
|
INIT_WORK(&port->bh_tqueue, isicom_bottomhalf, port);
|
|
port->status = 0;
|
|
init_waitqueue_head(&port->open_wait);
|
|
init_waitqueue_head(&port->close_wait);
|
|
/* . . . */
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Insmod can set static symbols so keep these static
|
|
*/
|
|
|
|
static int io[4];
|
|
static int irq[4];
|
|
|
|
MODULE_AUTHOR("MultiTech");
|
|
MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech");
|
|
MODULE_LICENSE("GPL");
|
|
module_param_array(io, int, NULL, 0);
|
|
MODULE_PARM_DESC(io, "I/O ports for the cards");
|
|
module_param_array(irq, int, NULL, 0);
|
|
MODULE_PARM_DESC(irq, "Interrupts for the cards");
|
|
|
|
static int __devinit isicom_setup(void)
|
|
{
|
|
struct pci_dev *dev = NULL;
|
|
int retval, card, idx, count;
|
|
unsigned char pciirq;
|
|
unsigned int ioaddr;
|
|
|
|
card = 0;
|
|
for(idx=0; idx < BOARD_COUNT; idx++) {
|
|
if (io[idx]) {
|
|
isi_card[idx].base=io[idx];
|
|
isi_card[idx].irq=irq[idx];
|
|
isi_card[idx].isa=YES;
|
|
card++;
|
|
}
|
|
else {
|
|
isi_card[idx].base = 0;
|
|
isi_card[idx].irq = 0;
|
|
}
|
|
}
|
|
|
|
for (idx=0 ;idx < card; idx++) {
|
|
if (!((isi_card[idx].irq==2)||(isi_card[idx].irq==3)||
|
|
(isi_card[idx].irq==4)||(isi_card[idx].irq==5)||
|
|
(isi_card[idx].irq==7)||(isi_card[idx].irq==10)||
|
|
(isi_card[idx].irq==11)||(isi_card[idx].irq==12)||
|
|
(isi_card[idx].irq==15))) {
|
|
|
|
if (isi_card[idx].base) {
|
|
printk(KERN_ERR "ISICOM: Irq %d unsupported. Disabling Card%d...\n",
|
|
isi_card[idx].irq, idx+1);
|
|
isi_card[idx].base=0;
|
|
card--;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (card < BOARD_COUNT) {
|
|
for (idx=0; idx < DEVID_COUNT; idx++) {
|
|
dev = NULL;
|
|
for (;;){
|
|
if (!(dev = pci_find_device(VENDOR_ID, isicom_pci_tbl[idx].device, dev)))
|
|
break;
|
|
if (card >= BOARD_COUNT)
|
|
break;
|
|
|
|
if (pci_enable_device(dev))
|
|
break;
|
|
|
|
/* found a PCI ISI card! */
|
|
ioaddr = pci_resource_start (dev, 3); /* i.e at offset 0x1c in the
|
|
* PCI configuration register
|
|
* space.
|
|
*/
|
|
pciirq = dev->irq;
|
|
printk(KERN_INFO "ISI PCI Card(Device ID 0x%x)\n", isicom_pci_tbl[idx].device);
|
|
/*
|
|
* allot the first empty slot in the array
|
|
*/
|
|
for (count=0; count < BOARD_COUNT; count++) {
|
|
if (isi_card[count].base == 0) {
|
|
isi_card[count].base = ioaddr;
|
|
isi_card[count].irq = pciirq;
|
|
isi_card[count].isa = NO;
|
|
card++;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (card >= BOARD_COUNT) break;
|
|
}
|
|
}
|
|
|
|
if (!(isi_card[0].base || isi_card[1].base || isi_card[2].base || isi_card[3].base)) {
|
|
printk(KERN_ERR "ISICOM: No valid card configuration. Driver cannot be initialized...\n");
|
|
return -EIO;
|
|
}
|
|
|
|
retval = misc_register(&isiloader_device);
|
|
if (retval < 0) {
|
|
printk(KERN_ERR "ISICOM: Unable to register firmware loader driver.\n");
|
|
return retval;
|
|
}
|
|
|
|
if (!isicom_init()) {
|
|
if (misc_deregister(&isiloader_device))
|
|
printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n");
|
|
return -EIO;
|
|
}
|
|
|
|
init_timer(&tx);
|
|
tx.expires = jiffies + 1;
|
|
tx.data = 0;
|
|
tx.function = isicom_tx;
|
|
re_schedule = 1;
|
|
add_timer(&tx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit isicom_exit(void)
|
|
{
|
|
re_schedule = 0;
|
|
/* FIXME */
|
|
msleep(1000);
|
|
unregister_isr();
|
|
unregister_drivers();
|
|
unregister_ioregion();
|
|
if(tmp_buf)
|
|
free_page((unsigned long)tmp_buf);
|
|
if (misc_deregister(&isiloader_device))
|
|
printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n");
|
|
}
|
|
|
|
module_init(isicom_setup);
|
|
module_exit(isicom_exit);
|