mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 12:06:42 +07:00
f21ec3d2d4
In most of the time, the driver needs to check if the cts flow control is enabled. But now, the driver checks the ASYNC_CTS_FLOW flag manually, which is not a grace way. So add a new wraper function to make the code tidy and clean. Signed-off-by: Huang Shijie <shijie8@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1734 lines
41 KiB
C
1734 lines
41 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@lxorguk.ukuu.org.uk
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* 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@lxorguk.ukuu.org.uk
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* 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.d/)
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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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* Merge testing
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* 64-bit verification
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/module.h>
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#include <linux/firmware.h>
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#include <linux/kernel.h>
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#include <linux/tty.h>
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#include <linux/tty_flip.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/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 <linux/slab.h>
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#include <linux/uaccess.h>
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#include <linux/io.h>
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#include <linux/pci.h>
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#include <linux/isicom.h>
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#define InterruptTheCard(base) outw(0, (base) + 0xc)
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#define ClearInterrupt(base) inw((base) + 0x0a)
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#ifdef DEBUG
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#define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c))
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#else
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#define isicom_paranoia_check(a, b, c) 0
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#endif
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static int isicom_probe(struct pci_dev *, const struct pci_device_id *);
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static void __devexit isicom_remove(struct pci_dev *);
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static struct pci_device_id isicom_pci_tbl[] = {
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{ PCI_DEVICE(VENDOR_ID, 0x2028) },
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{ PCI_DEVICE(VENDOR_ID, 0x2051) },
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{ PCI_DEVICE(VENDOR_ID, 0x2052) },
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{ PCI_DEVICE(VENDOR_ID, 0x2053) },
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{ PCI_DEVICE(VENDOR_ID, 0x2054) },
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{ PCI_DEVICE(VENDOR_ID, 0x2055) },
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{ PCI_DEVICE(VENDOR_ID, 0x2056) },
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{ PCI_DEVICE(VENDOR_ID, 0x2057) },
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{ PCI_DEVICE(VENDOR_ID, 0x2058) },
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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 struct pci_driver isicom_driver = {
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.name = "isicom",
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.id_table = isicom_pci_tbl,
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.probe = isicom_probe,
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.remove = __devexit_p(isicom_remove)
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};
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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 void isicom_tx(unsigned long _data);
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static void isicom_start(struct tty_struct *tty);
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static DEFINE_TIMER(tx, isicom_tx, 0, 0);
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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, 18, 19, 20, 21
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};
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struct isi_board {
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unsigned long base;
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int 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 for each 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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spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */
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unsigned long flags;
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unsigned int index;
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};
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struct isi_port {
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unsigned short magic;
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struct tty_port port;
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u16 channel;
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u16 status;
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struct isi_board *card;
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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 inline int WaitTillCardIsFree(unsigned long base)
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{
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unsigned int count = 0;
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unsigned int a = in_atomic(); /* do we run under spinlock? */
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while (!(inw(base + 0xe) & 0x1) && count++ < 100)
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if (a)
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mdelay(1);
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else
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msleep(1);
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return !(inw(base + 0xe) & 0x1);
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}
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static int lock_card(struct isi_board *card)
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{
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unsigned long base = card->base;
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unsigned int retries, a;
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for (retries = 0; retries < 10; retries++) {
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spin_lock_irqsave(&card->card_lock, card->flags);
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for (a = 0; a < 10; a++) {
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if (inw(base + 0xe) & 0x1)
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return 1;
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udelay(10);
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}
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spin_unlock_irqrestore(&card->card_lock, card->flags);
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msleep(10);
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}
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pr_warning("Failed to lock Card (0x%lx)\n", card->base);
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return 0; /* Failed to acquire 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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/* card->lock HAS to be held */
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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 long base = card->base;
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u16 channel = port->channel;
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if (WaitTillCardIsFree(base))
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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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}
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/* card->lock HAS to be held */
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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 long base = card->base;
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u16 channel = port->channel;
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if (WaitTillCardIsFree(base))
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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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}
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/* card->lock HAS to be held */
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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 long base = card->base;
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u16 channel = port->channel;
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if (WaitTillCardIsFree(base))
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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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}
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/* card->lock HAS to be held */
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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 long base = card->base;
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u16 channel = port->channel;
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if (WaitTillCardIsFree(base))
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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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}
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/* card->lock MUST NOT be held */
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static void isicom_dtr_rts(struct tty_port *port, int on)
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{
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struct isi_port *ip = container_of(port, struct isi_port, port);
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struct isi_board *card = ip->card;
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unsigned long base = card->base;
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u16 channel = ip->channel;
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if (!lock_card(card))
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return;
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if (on) {
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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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ip->status |= (ISI_DTR | ISI_RTS);
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} else {
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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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ip->status &= ~(ISI_DTR | ISI_RTS);
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}
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unlock_card(card);
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}
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/* card->lock HAS to be held */
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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 long base = card->base;
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u16 channel = port->channel;
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if (WaitTillCardIsFree(base))
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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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}
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/*
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* ISICOM Driver specific routines ...
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*
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*/
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static inline int __isicom_paranoia_check(struct isi_port const *port,
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char *name, const char *routine)
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{
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if (!port) {
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pr_warning("Warning: bad isicom magic for dev %s in %s.\n",
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name, routine);
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return 1;
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}
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if (port->magic != ISICOM_MAGIC) {
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pr_warning("Warning: NULL isicom port for dev %s in %s.\n",
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name, routine);
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return 1;
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}
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return 0;
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}
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/*
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* Transmitter.
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*
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* We shovel data into the card buffers on a regular basis. The card
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* will do the rest of the work for us.
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*/
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static void isicom_tx(unsigned long _data)
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{
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unsigned long flags, base;
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unsigned int retries;
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short count = (BOARD_COUNT-1), card;
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short txcount, wrd, residue, word_count, cnt;
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struct isi_port *port;
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struct tty_struct *tty;
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/* find next active board */
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card = (prev_card + 1) & 0x0003;
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while (count-- > 0) {
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if (isi_card[card].status & BOARD_ACTIVE)
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break;
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card = (card + 1) & 0x0003;
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}
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if (!(isi_card[card].status & BOARD_ACTIVE))
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goto sched_again;
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prev_card = card;
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count = isi_card[card].port_count;
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port = isi_card[card].ports;
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base = isi_card[card].base;
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spin_lock_irqsave(&isi_card[card].card_lock, flags);
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for (retries = 0; retries < 100; retries++) {
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if (inw(base + 0xe) & 0x1)
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break;
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udelay(2);
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}
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if (retries >= 100)
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goto unlock;
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tty = tty_port_tty_get(&port->port);
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if (tty == NULL)
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goto put_unlock;
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for (; count > 0; count--, port++) {
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/* port not active or tx disabled to force flow control */
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if (!(port->port.flags & ASYNC_INITIALIZED) ||
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!(port->status & ISI_TXOK))
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continue;
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txcount = min_t(short, TX_SIZE, port->xmit_cnt);
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if (txcount <= 0 || tty->stopped || tty->hw_stopped)
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continue;
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if (!(inw(base + 0x02) & (1 << port->channel)))
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continue;
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pr_debug("txing %d bytes, port%d.\n",
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txcount, port->channel + 1);
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outw((port->channel << isi_card[card].shift_count) | txcount,
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base);
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residue = NO;
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wrd = 0;
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while (1) {
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cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE
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- port->xmit_tail));
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if (residue == YES) {
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residue = NO;
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if (cnt > 0) {
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wrd |= (port->port.xmit_buf[port->xmit_tail]
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<< 8);
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port->xmit_tail = (port->xmit_tail + 1)
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& (SERIAL_XMIT_SIZE - 1);
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port->xmit_cnt--;
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txcount--;
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cnt--;
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outw(wrd, base);
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} else {
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outw(wrd, base);
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break;
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}
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}
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if (cnt <= 0)
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break;
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word_count = cnt >> 1;
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outsw(base, port->port.xmit_buf+port->xmit_tail, word_count);
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port->xmit_tail = (port->xmit_tail
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+ (word_count << 1)) & (SERIAL_XMIT_SIZE - 1);
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txcount -= (word_count << 1);
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port->xmit_cnt -= (word_count << 1);
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if (cnt & 0x0001) {
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residue = YES;
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wrd = port->port.xmit_buf[port->xmit_tail];
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port->xmit_tail = (port->xmit_tail + 1)
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& (SERIAL_XMIT_SIZE - 1);
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port->xmit_cnt--;
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txcount--;
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}
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}
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InterruptTheCard(base);
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if (port->xmit_cnt <= 0)
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port->status &= ~ISI_TXOK;
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if (port->xmit_cnt <= WAKEUP_CHARS)
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tty_wakeup(tty);
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|
}
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|
|
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put_unlock:
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tty_kref_put(tty);
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unlock:
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spin_unlock_irqrestore(&isi_card[card].card_lock, flags);
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|
/* schedule another tx for hopefully in about 10ms */
|
|
sched_again:
|
|
mod_timer(&tx, jiffies + msecs_to_jiffies(10));
|
|
}
|
|
|
|
/*
|
|
* Main interrupt handler routine
|
|
*/
|
|
|
|
static irqreturn_t isicom_interrupt(int irq, void *dev_id)
|
|
{
|
|
struct isi_board *card = dev_id;
|
|
struct isi_port *port;
|
|
struct tty_struct *tty;
|
|
unsigned long base;
|
|
u16 header, word_count, count, channel;
|
|
short byte_count;
|
|
unsigned char *rp;
|
|
|
|
if (!card || !(card->status & FIRMWARE_LOADED))
|
|
return IRQ_NONE;
|
|
|
|
base = card->base;
|
|
|
|
/* did the card interrupt us? */
|
|
if (!(inw(base + 0x0e) & 0x02))
|
|
return IRQ_NONE;
|
|
|
|
spin_lock(&card->card_lock);
|
|
|
|
/*
|
|
* 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) {
|
|
pr_warning("%s(0x%lx): %d(channel) > port_count.\n",
|
|
__func__, base, channel+1);
|
|
outw(0x0000, base+0x04); /* enable interrupts */
|
|
spin_unlock(&card->card_lock);
|
|
return IRQ_HANDLED;
|
|
}
|
|
port = card->ports + channel;
|
|
if (!(port->port.flags & ASYNC_INITIALIZED)) {
|
|
outw(0x0000, base+0x04); /* enable interrupts */
|
|
spin_unlock(&card->card_lock);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
tty = tty_port_tty_get(&port->port);
|
|
if (tty == NULL) {
|
|
word_count = byte_count >> 1;
|
|
while (byte_count > 1) {
|
|
inw(base);
|
|
byte_count -= 2;
|
|
}
|
|
if (byte_count & 0x01)
|
|
inw(base);
|
|
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->port.flags & ASYNC_CHECK_CD) {
|
|
if (port->status & ISI_DCD) {
|
|
if (!(header & ISI_DCD)) {
|
|
/* Carrier has been lost */
|
|
pr_debug("%s: DCD->low.\n",
|
|
__func__);
|
|
port->status &= ~ISI_DCD;
|
|
tty_hangup(tty);
|
|
}
|
|
} else if (header & ISI_DCD) {
|
|
/* Carrier has been detected */
|
|
pr_debug("%s: DCD->high.\n",
|
|
__func__);
|
|
port->status |= ISI_DCD;
|
|
wake_up_interruptible(&port->port.open_wait);
|
|
}
|
|
} else {
|
|
if (header & ISI_DCD)
|
|
port->status |= ISI_DCD;
|
|
else
|
|
port->status &= ~ISI_DCD;
|
|
}
|
|
|
|
if (tty_port_cts_enabled(&port->port)) {
|
|
if (tty->hw_stopped) {
|
|
if (header & ISI_CTS) {
|
|
port->port.tty->hw_stopped = 0;
|
|
/* start tx ing */
|
|
port->status |= (ISI_TXOK
|
|
| ISI_CTS);
|
|
tty_wakeup(tty);
|
|
}
|
|
} else if (!(header & ISI_CTS)) {
|
|
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 !!! */
|
|
tty_insert_flip_char(tty, 0, TTY_BREAK);
|
|
if (port->port.flags & ASYNC_SAK)
|
|
do_SAK(tty);
|
|
tty_flip_buffer_push(tty);
|
|
break;
|
|
|
|
case 2: /* Statistics */
|
|
pr_debug("%s: stats!!!\n", __func__);
|
|
break;
|
|
|
|
default:
|
|
pr_debug("%s: Unknown code in status packet.\n",
|
|
__func__);
|
|
break;
|
|
}
|
|
} else { /* Data Packet */
|
|
|
|
count = tty_prepare_flip_string(tty, &rp, byte_count & ~1);
|
|
pr_debug("%s: Can rx %d of %d bytes.\n",
|
|
__func__, count, byte_count);
|
|
word_count = count >> 1;
|
|
insw(base, rp, word_count);
|
|
byte_count -= (word_count << 1);
|
|
if (count & 0x0001) {
|
|
tty_insert_flip_char(tty, inw(base) & 0xff,
|
|
TTY_NORMAL);
|
|
byte_count -= 2;
|
|
}
|
|
if (byte_count > 0) {
|
|
pr_debug("%s(0x%lx:%d): Flip buffer overflow! dropping bytes...\n",
|
|
__func__, base, channel + 1);
|
|
/* drain out unread xtra data */
|
|
while (byte_count > 0) {
|
|
inw(base);
|
|
byte_count -= 2;
|
|
}
|
|
}
|
|
tty_flip_buffer_push(tty);
|
|
}
|
|
outw(0x0000, base+0x04); /* enable interrupts */
|
|
spin_unlock(&card->card_lock);
|
|
tty_kref_put(tty);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void isicom_config_port(struct tty_struct *tty)
|
|
{
|
|
struct isi_port *port = tty->driver_data;
|
|
struct isi_board *card = port->card;
|
|
unsigned long baud;
|
|
unsigned long base = card->base;
|
|
u16 channel_setup, channel = port->channel,
|
|
shift_count = card->shift_count;
|
|
unsigned char flow_ctrl;
|
|
|
|
/* FIXME: Switch to new tty baud API */
|
|
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.
|
|
*/
|
|
|
|
/* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */
|
|
if (baud < 1 || baud > 4)
|
|
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->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
|
|
baud++; /* 57.6 Kbps */
|
|
if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
|
|
baud += 2; /* 115 Kbps */
|
|
if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
|
|
baud += 3; /* 230 kbps*/
|
|
if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
|
|
baud += 4; /* 460 kbps*/
|
|
}
|
|
if (linuxb_to_isib[baud] == -1) {
|
|
/* hang up */
|
|
drop_dtr(port);
|
|
return;
|
|
} else
|
|
raise_dtr(port);
|
|
|
|
if (WaitTillCardIsFree(base) == 0) {
|
|
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);
|
|
}
|
|
if (C_CLOCAL(tty))
|
|
port->port.flags &= ~ASYNC_CHECK_CD;
|
|
else
|
|
port->port.flags |= ASYNC_CHECK_CD;
|
|
|
|
/* flow control settings ...*/
|
|
flow_ctrl = 0;
|
|
port->port.flags &= ~ASYNC_CTS_FLOW;
|
|
if (C_CRTSCTS(tty)) {
|
|
port->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 (WaitTillCardIsFree(base) == 0) {
|
|
outw(0x8000 | (channel << shift_count) | 0x04, base);
|
|
outw(flow_ctrl << 8 | 0x05, base);
|
|
outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base);
|
|
InterruptTheCard(base);
|
|
}
|
|
|
|
/* 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;
|
|
|
|
bp->count++;
|
|
if (!(bp->status & BOARD_INIT)) {
|
|
port = bp->ports;
|
|
for (channel = 0; channel < bp->port_count; channel++, port++)
|
|
drop_dtr_rts(port);
|
|
}
|
|
bp->status |= BOARD_ACTIVE | BOARD_INIT;
|
|
}
|
|
|
|
/* Activate and thus setup board are protected from races against shutdown
|
|
by the tty_port mutex */
|
|
|
|
static int isicom_activate(struct tty_port *tport, struct tty_struct *tty)
|
|
{
|
|
struct isi_port *port = container_of(tport, struct isi_port, port);
|
|
struct isi_board *card = port->card;
|
|
unsigned long flags;
|
|
|
|
if (tty_port_alloc_xmit_buf(tport) < 0)
|
|
return -ENOMEM;
|
|
|
|
spin_lock_irqsave(&card->card_lock, flags);
|
|
isicom_setup_board(card);
|
|
|
|
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
|
|
|
|
/* discard any residual data */
|
|
if (WaitTillCardIsFree(card->base) == 0) {
|
|
outw(0x8000 | (port->channel << card->shift_count) | 0x02,
|
|
card->base);
|
|
outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base);
|
|
InterruptTheCard(card->base);
|
|
}
|
|
isicom_config_port(tty);
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int isicom_carrier_raised(struct tty_port *port)
|
|
{
|
|
struct isi_port *ip = container_of(port, struct isi_port, port);
|
|
return (ip->status & ISI_DCD)?1 : 0;
|
|
}
|
|
|
|
static struct tty_port *isicom_find_port(struct tty_struct *tty)
|
|
{
|
|
struct isi_port *port;
|
|
struct isi_board *card;
|
|
unsigned int board;
|
|
int line = tty->index;
|
|
|
|
board = BOARD(line);
|
|
card = &isi_card[board];
|
|
|
|
if (!(card->status & FIRMWARE_LOADED))
|
|
return NULL;
|
|
|
|
/* open on a port greater than the port count for the card !!! */
|
|
if (line > ((board * 16) + card->port_count - 1))
|
|
return NULL;
|
|
|
|
port = &isi_ports[line];
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_open"))
|
|
return NULL;
|
|
|
|
return &port->port;
|
|
}
|
|
|
|
static int isicom_open(struct tty_struct *tty, struct file *filp)
|
|
{
|
|
struct isi_port *port;
|
|
struct tty_port *tport;
|
|
|
|
tport = isicom_find_port(tty);
|
|
if (tport == NULL)
|
|
return -ENODEV;
|
|
port = container_of(tport, struct isi_port, port);
|
|
|
|
tty->driver_data = port;
|
|
return tty_port_open(tport, tty, filp);
|
|
}
|
|
|
|
/* close et all */
|
|
|
|
/* card->lock HAS to be held */
|
|
static void isicom_shutdown_port(struct isi_port *port)
|
|
{
|
|
struct isi_board *card = port->card;
|
|
|
|
if (--card->count < 0) {
|
|
pr_debug("%s: bad board(0x%lx) count %d.\n",
|
|
__func__, card->base, card->count);
|
|
card->count = 0;
|
|
}
|
|
/* last port was closed, shutdown that board too */
|
|
if (!card->count)
|
|
card->status &= BOARD_ACTIVE;
|
|
}
|
|
|
|
static void isicom_flush_buffer(struct tty_struct *tty)
|
|
{
|
|
struct isi_port *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);
|
|
|
|
tty_wakeup(tty);
|
|
}
|
|
|
|
static void isicom_shutdown(struct tty_port *port)
|
|
{
|
|
struct isi_port *ip = container_of(port, struct isi_port, port);
|
|
struct isi_board *card = ip->card;
|
|
unsigned long flags;
|
|
|
|
/* indicate to the card that no more data can be received
|
|
on this port */
|
|
spin_lock_irqsave(&card->card_lock, flags);
|
|
card->port_status &= ~(1 << ip->channel);
|
|
outw(card->port_status, card->base + 0x02);
|
|
isicom_shutdown_port(ip);
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
tty_port_free_xmit_buf(port);
|
|
}
|
|
|
|
static void isicom_close(struct tty_struct *tty, struct file *filp)
|
|
{
|
|
struct isi_port *ip = tty->driver_data;
|
|
struct tty_port *port;
|
|
|
|
if (ip == NULL)
|
|
return;
|
|
|
|
port = &ip->port;
|
|
if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
|
|
return;
|
|
tty_port_close(port, tty, filp);
|
|
}
|
|
|
|
/* write et all */
|
|
static int isicom_write(struct tty_struct *tty, const unsigned char *buf,
|
|
int count)
|
|
{
|
|
struct isi_port *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;
|
|
|
|
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->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 int isicom_put_char(struct tty_struct *tty, unsigned char ch)
|
|
{
|
|
struct isi_port *port = tty->driver_data;
|
|
struct isi_board *card = port->card;
|
|
unsigned long flags;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_put_char"))
|
|
return 0;
|
|
|
|
spin_lock_irqsave(&card->card_lock, flags);
|
|
if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
port->port.xmit_buf[port->xmit_head++] = ch;
|
|
port->xmit_head &= (SERIAL_XMIT_SIZE - 1);
|
|
port->xmit_cnt++;
|
|
spin_unlock_irqrestore(&card->card_lock, flags);
|
|
return 1;
|
|
}
|
|
|
|
/* flush_chars et all */
|
|
static void isicom_flush_chars(struct tty_struct *tty)
|
|
{
|
|
struct isi_port *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->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 = 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 = tty->driver_data;
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer"))
|
|
return 0;
|
|
return port->xmit_cnt;
|
|
}
|
|
|
|
/* ioctl et all */
|
|
static int isicom_send_break(struct tty_struct *tty, int length)
|
|
{
|
|
struct isi_port *port = tty->driver_data;
|
|
struct isi_board *card = port->card;
|
|
unsigned long base = card->base;
|
|
|
|
if (length == -1)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!lock_card(card))
|
|
return -EINVAL;
|
|
|
|
outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base);
|
|
outw((length & 0xff) << 8 | 0x00, base);
|
|
outw((length & 0xff00), base);
|
|
InterruptTheCard(base);
|
|
|
|
unlock_card(card);
|
|
return 0;
|
|
}
|
|
|
|
static int isicom_tiocmget(struct tty_struct *tty)
|
|
{
|
|
struct isi_port *port = tty->driver_data;
|
|
/* just send the port status */
|
|
u16 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,
|
|
unsigned int set, unsigned int clear)
|
|
{
|
|
struct isi_port *port = tty->driver_data;
|
|
unsigned long flags;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
|
|
return -ENODEV;
|
|
|
|
spin_lock_irqsave(&port->card->card_lock, flags);
|
|
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);
|
|
spin_unlock_irqrestore(&port->card->card_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int isicom_set_serial_info(struct tty_struct *tty,
|
|
struct serial_struct __user *info)
|
|
{
|
|
struct isi_port *port = tty->driver_data;
|
|
struct serial_struct newinfo;
|
|
int reconfig_port;
|
|
|
|
if (copy_from_user(&newinfo, info, sizeof(newinfo)))
|
|
return -EFAULT;
|
|
|
|
mutex_lock(&port->port.mutex);
|
|
reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) !=
|
|
(newinfo.flags & ASYNC_SPD_MASK));
|
|
|
|
if (!capable(CAP_SYS_ADMIN)) {
|
|
if ((newinfo.close_delay != port->port.close_delay) ||
|
|
(newinfo.closing_wait != port->port.closing_wait) ||
|
|
((newinfo.flags & ~ASYNC_USR_MASK) !=
|
|
(port->port.flags & ~ASYNC_USR_MASK))) {
|
|
mutex_unlock(&port->port.mutex);
|
|
return -EPERM;
|
|
}
|
|
port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) |
|
|
(newinfo.flags & ASYNC_USR_MASK));
|
|
} else {
|
|
port->port.close_delay = newinfo.close_delay;
|
|
port->port.closing_wait = newinfo.closing_wait;
|
|
port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) |
|
|
(newinfo.flags & ASYNC_FLAGS));
|
|
}
|
|
if (reconfig_port) {
|
|
unsigned long flags;
|
|
spin_lock_irqsave(&port->card->card_lock, flags);
|
|
isicom_config_port(tty);
|
|
spin_unlock_irqrestore(&port->card->card_lock, flags);
|
|
}
|
|
mutex_unlock(&port->port.mutex);
|
|
return 0;
|
|
}
|
|
|
|
static int isicom_get_serial_info(struct isi_port *port,
|
|
struct serial_struct __user *info)
|
|
{
|
|
struct serial_struct out_info;
|
|
|
|
mutex_lock(&port->port.mutex);
|
|
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->port.flags;
|
|
/* out_info.baud_base = ? */
|
|
out_info.close_delay = port->port.close_delay;
|
|
out_info.closing_wait = port->port.closing_wait;
|
|
mutex_unlock(&port->port.mutex);
|
|
if (copy_to_user(info, &out_info, sizeof(out_info)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
static int isicom_ioctl(struct tty_struct *tty,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct isi_port *port = tty->driver_data;
|
|
void __user *argp = (void __user *)arg;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
|
|
return -ENODEV;
|
|
|
|
switch (cmd) {
|
|
case TIOCGSERIAL:
|
|
return isicom_get_serial_info(port, argp);
|
|
|
|
case TIOCSSERIAL:
|
|
return isicom_set_serial_info(tty, argp);
|
|
|
|
default:
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* set_termios et all */
|
|
static void isicom_set_termios(struct tty_struct *tty,
|
|
struct ktermios *old_termios)
|
|
{
|
|
struct isi_port *port = tty->driver_data;
|
|
unsigned long flags;
|
|
|
|
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;
|
|
|
|
spin_lock_irqsave(&port->card->card_lock, flags);
|
|
isicom_config_port(tty);
|
|
spin_unlock_irqrestore(&port->card->card_lock, flags);
|
|
|
|
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 = 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 = 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 = 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 = 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;
|
|
}
|
|
|
|
static void isicom_hangup(struct tty_struct *tty)
|
|
{
|
|
struct isi_port *port = tty->driver_data;
|
|
|
|
if (isicom_paranoia_check(port, tty->name, "isicom_hangup"))
|
|
return;
|
|
tty_port_hangup(&port->port);
|
|
}
|
|
|
|
|
|
/*
|
|
* Driver init and deinit functions
|
|
*/
|
|
|
|
static const 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,
|
|
.break_ctl = isicom_send_break,
|
|
};
|
|
|
|
static const struct tty_port_operations isicom_port_ops = {
|
|
.carrier_raised = isicom_carrier_raised,
|
|
.dtr_rts = isicom_dtr_rts,
|
|
.activate = isicom_activate,
|
|
.shutdown = isicom_shutdown,
|
|
};
|
|
|
|
static int __devinit reset_card(struct pci_dev *pdev,
|
|
const unsigned int card, unsigned int *signature)
|
|
{
|
|
struct isi_board *board = pci_get_drvdata(pdev);
|
|
unsigned long base = board->base;
|
|
unsigned int sig, portcount = 0;
|
|
int retval = 0;
|
|
|
|
dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1,
|
|
base);
|
|
|
|
inw(base + 0x8);
|
|
|
|
msleep(10);
|
|
|
|
outw(0, base + 0x8); /* Reset */
|
|
|
|
msleep(1000);
|
|
|
|
sig = inw(base + 0x4) & 0xff;
|
|
|
|
if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd &&
|
|
sig != 0xee) {
|
|
dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible "
|
|
"bad I/O Port Address 0x%lx).\n", card + 1, base);
|
|
dev_dbg(&pdev->dev, "Sig=0x%x\n", sig);
|
|
retval = -EIO;
|
|
goto end;
|
|
}
|
|
|
|
msleep(10);
|
|
|
|
portcount = inw(base + 0x2);
|
|
if (!(inw(base + 0xe) & 0x1) || (portcount != 0 && portcount != 4 &&
|
|
portcount != 8 && portcount != 16)) {
|
|
dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.\n",
|
|
card + 1);
|
|
retval = -EIO;
|
|
goto end;
|
|
}
|
|
|
|
switch (sig) {
|
|
case 0xa5:
|
|
case 0xbb:
|
|
case 0xdd:
|
|
board->port_count = (portcount == 4) ? 4 : 8;
|
|
board->shift_count = 12;
|
|
break;
|
|
case 0xcc:
|
|
case 0xee:
|
|
board->port_count = 16;
|
|
board->shift_count = 11;
|
|
break;
|
|
}
|
|
dev_info(&pdev->dev, "-Done\n");
|
|
*signature = sig;
|
|
|
|
end:
|
|
return retval;
|
|
}
|
|
|
|
static int __devinit load_firmware(struct pci_dev *pdev,
|
|
const unsigned int index, const unsigned int signature)
|
|
{
|
|
struct isi_board *board = pci_get_drvdata(pdev);
|
|
const struct firmware *fw;
|
|
unsigned long base = board->base;
|
|
unsigned int a;
|
|
u16 word_count, status;
|
|
int retval = -EIO;
|
|
char *name;
|
|
u8 *data;
|
|
|
|
struct stframe {
|
|
u16 addr;
|
|
u16 count;
|
|
u8 data[0];
|
|
} *frame;
|
|
|
|
switch (signature) {
|
|
case 0xa5:
|
|
name = "isi608.bin";
|
|
break;
|
|
case 0xbb:
|
|
name = "isi608em.bin";
|
|
break;
|
|
case 0xcc:
|
|
name = "isi616em.bin";
|
|
break;
|
|
case 0xdd:
|
|
name = "isi4608.bin";
|
|
break;
|
|
case 0xee:
|
|
name = "isi4616.bin";
|
|
break;
|
|
default:
|
|
dev_err(&pdev->dev, "Unknown signature.\n");
|
|
goto end;
|
|
}
|
|
|
|
retval = request_firmware(&fw, name, &pdev->dev);
|
|
if (retval)
|
|
goto end;
|
|
|
|
retval = -EIO;
|
|
|
|
for (frame = (struct stframe *)fw->data;
|
|
frame < (struct stframe *)(fw->data + fw->size);
|
|
frame = (struct stframe *)((u8 *)(frame + 1) +
|
|
frame->count)) {
|
|
if (WaitTillCardIsFree(base))
|
|
goto errrelfw;
|
|
|
|
outw(0xf0, base); /* start upload sequence */
|
|
outw(0x00, base);
|
|
outw(frame->addr, base); /* lsb of address */
|
|
|
|
word_count = frame->count / 2 + frame->count % 2;
|
|
outw(word_count, base);
|
|
InterruptTheCard(base);
|
|
|
|
udelay(100); /* 0x2f */
|
|
|
|
if (WaitTillCardIsFree(base))
|
|
goto errrelfw;
|
|
|
|
status = inw(base + 0x4);
|
|
if (status != 0) {
|
|
dev_warn(&pdev->dev, "Card%d rejected load header:\n"
|
|
"Address:0x%x\n"
|
|
"Count:0x%x\n"
|
|
"Status:0x%x\n",
|
|
index + 1, frame->addr, frame->count, status);
|
|
goto errrelfw;
|
|
}
|
|
outsw(base, frame->data, word_count);
|
|
|
|
InterruptTheCard(base);
|
|
|
|
udelay(50); /* 0x0f */
|
|
|
|
if (WaitTillCardIsFree(base))
|
|
goto errrelfw;
|
|
|
|
status = inw(base + 0x4);
|
|
if (status != 0) {
|
|
dev_err(&pdev->dev, "Card%d got out of sync.Card "
|
|
"Status:0x%x\n", index + 1, status);
|
|
goto errrelfw;
|
|
}
|
|
}
|
|
|
|
/* XXX: should we test it by reading it back and comparing with original like
|
|
* in load firmware package? */
|
|
for (frame = (struct stframe *)fw->data;
|
|
frame < (struct stframe *)(fw->data + fw->size);
|
|
frame = (struct stframe *)((u8 *)(frame + 1) +
|
|
frame->count)) {
|
|
if (WaitTillCardIsFree(base))
|
|
goto errrelfw;
|
|
|
|
outw(0xf1, base); /* start download sequence */
|
|
outw(0x00, base);
|
|
outw(frame->addr, base); /* lsb of address */
|
|
|
|
word_count = (frame->count >> 1) + frame->count % 2;
|
|
outw(word_count + 1, base);
|
|
InterruptTheCard(base);
|
|
|
|
udelay(50); /* 0xf */
|
|
|
|
if (WaitTillCardIsFree(base))
|
|
goto errrelfw;
|
|
|
|
status = inw(base + 0x4);
|
|
if (status != 0) {
|
|
dev_warn(&pdev->dev, "Card%d rejected verify header:\n"
|
|
"Address:0x%x\n"
|
|
"Count:0x%x\n"
|
|
"Status: 0x%x\n",
|
|
index + 1, frame->addr, frame->count, status);
|
|
goto errrelfw;
|
|
}
|
|
|
|
data = kmalloc(word_count * 2, GFP_KERNEL);
|
|
if (data == NULL) {
|
|
dev_err(&pdev->dev, "Card%d, firmware upload "
|
|
"failed, not enough memory\n", index + 1);
|
|
goto errrelfw;
|
|
}
|
|
inw(base);
|
|
insw(base, data, word_count);
|
|
InterruptTheCard(base);
|
|
|
|
for (a = 0; a < frame->count; a++)
|
|
if (data[a] != frame->data[a]) {
|
|
kfree(data);
|
|
dev_err(&pdev->dev, "Card%d, firmware upload "
|
|
"failed\n", index + 1);
|
|
goto errrelfw;
|
|
}
|
|
kfree(data);
|
|
|
|
udelay(50); /* 0xf */
|
|
|
|
if (WaitTillCardIsFree(base))
|
|
goto errrelfw;
|
|
|
|
status = inw(base + 0x4);
|
|
if (status != 0) {
|
|
dev_err(&pdev->dev, "Card%d verify got out of sync. "
|
|
"Card Status:0x%x\n", index + 1, status);
|
|
goto errrelfw;
|
|
}
|
|
}
|
|
|
|
/* xfer ctrl */
|
|
if (WaitTillCardIsFree(base))
|
|
goto errrelfw;
|
|
|
|
outw(0xf2, base);
|
|
outw(0x800, base);
|
|
outw(0x0, base);
|
|
outw(0x0, base);
|
|
InterruptTheCard(base);
|
|
outw(0x0, base + 0x4); /* for ISI4608 cards */
|
|
|
|
board->status |= FIRMWARE_LOADED;
|
|
retval = 0;
|
|
|
|
errrelfw:
|
|
release_firmware(fw);
|
|
end:
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* Insmod can set static symbols so keep these static
|
|
*/
|
|
static unsigned int card_count;
|
|
|
|
static int __devinit isicom_probe(struct pci_dev *pdev,
|
|
const struct pci_device_id *ent)
|
|
{
|
|
unsigned int uninitialized_var(signature), index;
|
|
int retval = -EPERM;
|
|
struct isi_board *board = NULL;
|
|
|
|
if (card_count >= BOARD_COUNT)
|
|
goto err;
|
|
|
|
retval = pci_enable_device(pdev);
|
|
if (retval) {
|
|
dev_err(&pdev->dev, "failed to enable\n");
|
|
goto err;
|
|
}
|
|
|
|
dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device);
|
|
|
|
/* allot the first empty slot in the array */
|
|
for (index = 0; index < BOARD_COUNT; index++) {
|
|
if (isi_card[index].base == 0) {
|
|
board = &isi_card[index];
|
|
break;
|
|
}
|
|
}
|
|
if (index == BOARD_COUNT) {
|
|
retval = -ENODEV;
|
|
goto err_disable;
|
|
}
|
|
|
|
board->index = index;
|
|
board->base = pci_resource_start(pdev, 3);
|
|
board->irq = pdev->irq;
|
|
card_count++;
|
|
|
|
pci_set_drvdata(pdev, board);
|
|
|
|
retval = pci_request_region(pdev, 3, ISICOM_NAME);
|
|
if (retval) {
|
|
dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d "
|
|
"will be disabled.\n", board->base, board->base + 15,
|
|
index + 1);
|
|
retval = -EBUSY;
|
|
goto errdec;
|
|
}
|
|
|
|
retval = request_irq(board->irq, isicom_interrupt,
|
|
IRQF_SHARED, ISICOM_NAME, board);
|
|
if (retval < 0) {
|
|
dev_err(&pdev->dev, "Could not install handler at Irq %d. "
|
|
"Card%d will be disabled.\n", board->irq, index + 1);
|
|
goto errunrr;
|
|
}
|
|
|
|
retval = reset_card(pdev, index, &signature);
|
|
if (retval < 0)
|
|
goto errunri;
|
|
|
|
retval = load_firmware(pdev, index, signature);
|
|
if (retval < 0)
|
|
goto errunri;
|
|
|
|
for (index = 0; index < board->port_count; index++)
|
|
tty_port_register_device(&board->ports[index].port,
|
|
isicom_normal, board->index * 16 + index,
|
|
&pdev->dev);
|
|
|
|
return 0;
|
|
|
|
errunri:
|
|
free_irq(board->irq, board);
|
|
errunrr:
|
|
pci_release_region(pdev, 3);
|
|
errdec:
|
|
board->base = 0;
|
|
card_count--;
|
|
err_disable:
|
|
pci_disable_device(pdev);
|
|
err:
|
|
return retval;
|
|
}
|
|
|
|
static void __devexit isicom_remove(struct pci_dev *pdev)
|
|
{
|
|
struct isi_board *board = pci_get_drvdata(pdev);
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < board->port_count; i++)
|
|
tty_unregister_device(isicom_normal, board->index * 16 + i);
|
|
|
|
free_irq(board->irq, board);
|
|
pci_release_region(pdev, 3);
|
|
board->base = 0;
|
|
card_count--;
|
|
pci_disable_device(pdev);
|
|
}
|
|
|
|
static int __init isicom_init(void)
|
|
{
|
|
int retval, idx, channel;
|
|
struct isi_port *port;
|
|
|
|
for (idx = 0; idx < BOARD_COUNT; idx++) {
|
|
port = &isi_ports[idx * 16];
|
|
isi_card[idx].ports = port;
|
|
spin_lock_init(&isi_card[idx].card_lock);
|
|
for (channel = 0; channel < 16; channel++, port++) {
|
|
tty_port_init(&port->port);
|
|
port->port.ops = &isicom_port_ops;
|
|
port->magic = ISICOM_MAGIC;
|
|
port->card = &isi_card[idx];
|
|
port->channel = channel;
|
|
port->port.close_delay = 50 * HZ/100;
|
|
port->port.closing_wait = 3000 * HZ/100;
|
|
port->status = 0;
|
|
/* . . . */
|
|
}
|
|
isi_card[idx].base = 0;
|
|
isi_card[idx].irq = 0;
|
|
}
|
|
|
|
/* tty driver structure initialization */
|
|
isicom_normal = alloc_tty_driver(PORT_COUNT);
|
|
if (!isicom_normal) {
|
|
retval = -ENOMEM;
|
|
goto error;
|
|
}
|
|
|
|
isicom_normal->name = "ttyM";
|
|
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_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK;
|
|
tty_set_operations(isicom_normal, &isicom_ops);
|
|
|
|
retval = tty_register_driver(isicom_normal);
|
|
if (retval) {
|
|
pr_debug("Couldn't register the dialin driver\n");
|
|
goto err_puttty;
|
|
}
|
|
|
|
retval = pci_register_driver(&isicom_driver);
|
|
if (retval < 0) {
|
|
pr_err("Unable to register pci driver.\n");
|
|
goto err_unrtty;
|
|
}
|
|
|
|
mod_timer(&tx, jiffies + 1);
|
|
|
|
return 0;
|
|
err_unrtty:
|
|
tty_unregister_driver(isicom_normal);
|
|
err_puttty:
|
|
put_tty_driver(isicom_normal);
|
|
error:
|
|
return retval;
|
|
}
|
|
|
|
static void __exit isicom_exit(void)
|
|
{
|
|
del_timer_sync(&tx);
|
|
|
|
pci_unregister_driver(&isicom_driver);
|
|
tty_unregister_driver(isicom_normal);
|
|
put_tty_driver(isicom_normal);
|
|
}
|
|
|
|
module_init(isicom_init);
|
|
module_exit(isicom_exit);
|
|
|
|
MODULE_AUTHOR("MultiTech");
|
|
MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_FIRMWARE("isi608.bin");
|
|
MODULE_FIRMWARE("isi608em.bin");
|
|
MODULE_FIRMWARE("isi616em.bin");
|
|
MODULE_FIRMWARE("isi4608.bin");
|
|
MODULE_FIRMWARE("isi4616.bin");
|