linux/drivers/char/isicom.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

1729 lines
41 KiB
C

/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Original driver code supplied by Multi-Tech
*
* Changes
* 1/9/98 alan@lxorguk.ukuu.org.uk
* Merge to 2.0.x kernel tree
* Obtain and use official major/minors
* Loader switched to a misc device
* (fixed range check bug as a side effect)
* Printk clean up
* 9/12/98 alan@lxorguk.ukuu.org.uk
* Rough port to 2.1.x
*
* 10/6/99 sameer Merged the ISA and PCI drivers to
* a new unified driver.
*
* 3/9/99 sameer Added support for ISI4616 cards.
*
* 16/9/99 sameer We do not force RTS low anymore.
* This is to prevent the firmware
* from getting confused.
*
* 26/10/99 sameer Cosmetic changes:The driver now
* dumps the Port Count information
* along with I/O address and IRQ.
*
* 13/12/99 sameer Fixed the problem with IRQ sharing.
*
* 10/5/00 sameer Fixed isicom_shutdown_board()
* to not lower DTR on all the ports
* when the last port on the card is
* closed.
*
* 10/5/00 sameer Signal mask setup command added
* to isicom_setup_port and
* isicom_shutdown_port.
*
* 24/5/00 sameer The driver is now SMP aware.
*
*
* 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem
*
*
* 03/01/01 anil .s Added support for resetting the
* internal modems on ISI cards.
*
* 08/02/01 anil .s Upgraded the driver for kernel
* 2.4.x
*
* 11/04/01 Kevin Fixed firmware load problem with
* ISIHP-4X card
*
* 30/04/01 anil .s Fixed the remote login through
* ISI port problem. Now the link
* does not go down before password
* prompt.
*
* 03/05/01 anil .s Fixed the problem with IRQ sharing
* among ISI-PCI cards.
*
* 03/05/01 anil .s Added support to display the version
* info during insmod as well as module
* listing by lsmod.
*
* 10/05/01 anil .s Done the modifications to the source
* file and Install script so that the
* same installation can be used for
* 2.2.x and 2.4.x kernel.
*
* 06/06/01 anil .s Now we drop both dtr and rts during
* shutdown_port as well as raise them
* during isicom_config_port.
*
* 09/06/01 acme@conectiva.com.br use capable, not suser, do
* restore_flags on failure in
* isicom_send_break, verify put_user
* result
*
* 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps
* Baud index extended to 21
*
* 20/03/03 ranjeeth Made to work for Linux Advanced server.
* Taken care of license warning.
*
* 10/12/03 Ravindra Made to work for Fedora Core 1 of
* Red Hat Distribution
*
* 06/01/05 Alan Cox Merged the ISI and base kernel strands
* into a single 2.6 driver
*
* ***********************************************************
*
* To use this driver you also need the support package. You
* can find this in RPM format on
* ftp://ftp.linux.org.uk/pub/linux/alan
*
* You can find the original tools for this direct from Multitech
* ftp://ftp.multitech.com/ISI-Cards/
*
* Having installed the cards the module options (/etc/modprobe.conf)
*
* options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4
*
* Omit those entries for boards you don't have installed.
*
* TODO
* Merge testing
* 64-bit verification
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/firmware.h>
#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/termios.h>
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/serial.h>
#include <linux/smp_lock.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/io.h>
#include <asm/system.h>
#include <linux/pci.h>
#include <linux/isicom.h>
#define InterruptTheCard(base) outw(0, (base) + 0xc)
#define ClearInterrupt(base) inw((base) + 0x0a)
#ifdef DEBUG
#define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c))
#else
#define isicom_paranoia_check(a, b, c) 0
#endif
static int isicom_probe(struct pci_dev *, const struct pci_device_id *);
static void __devexit isicom_remove(struct pci_dev *);
static struct pci_device_id isicom_pci_tbl[] = {
{ PCI_DEVICE(VENDOR_ID, 0x2028) },
{ PCI_DEVICE(VENDOR_ID, 0x2051) },
{ PCI_DEVICE(VENDOR_ID, 0x2052) },
{ PCI_DEVICE(VENDOR_ID, 0x2053) },
{ PCI_DEVICE(VENDOR_ID, 0x2054) },
{ PCI_DEVICE(VENDOR_ID, 0x2055) },
{ PCI_DEVICE(VENDOR_ID, 0x2056) },
{ PCI_DEVICE(VENDOR_ID, 0x2057) },
{ PCI_DEVICE(VENDOR_ID, 0x2058) },
{ 0 }
};
MODULE_DEVICE_TABLE(pci, isicom_pci_tbl);
static struct pci_driver isicom_driver = {
.name = "isicom",
.id_table = isicom_pci_tbl,
.probe = isicom_probe,
.remove = __devexit_p(isicom_remove)
};
static int prev_card = 3; /* start servicing isi_card[0] */
static struct tty_driver *isicom_normal;
static void isicom_tx(unsigned long _data);
static void isicom_start(struct tty_struct *tty);
static DEFINE_TIMER(tx, isicom_tx, 0, 0);
/* baud index mappings from linux defns to isi */
static signed char linuxb_to_isib[] = {
-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19, 20, 21
};
struct isi_board {
unsigned long base;
int irq;
unsigned char port_count;
unsigned short status;
unsigned short port_status; /* each bit for each port */
unsigned short shift_count;
struct isi_port *ports;
signed char count;
spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */
unsigned long flags;
unsigned int index;
};
struct isi_port {
unsigned short magic;
struct tty_port port;
u16 channel;
u16 status;
struct isi_board *card;
unsigned char *xmit_buf;
int xmit_head;
int xmit_tail;
int xmit_cnt;
};
static struct isi_board isi_card[BOARD_COUNT];
static struct isi_port isi_ports[PORT_COUNT];
/*
* Locking functions for card level locking. We need to own both
* the kernel lock for the card and have the card in a position that
* it wants to talk.
*/
static inline int WaitTillCardIsFree(unsigned long base)
{
unsigned int count = 0;
unsigned int a = in_atomic(); /* do we run under spinlock? */
while (!(inw(base + 0xe) & 0x1) && count++ < 100)
if (a)
mdelay(1);
else
msleep(1);
return !(inw(base + 0xe) & 0x1);
}
static int lock_card(struct isi_board *card)
{
unsigned long base = card->base;
unsigned int retries, a;
for (retries = 0; retries < 10; retries++) {
spin_lock_irqsave(&card->card_lock, card->flags);
for (a = 0; a < 10; a++) {
if (inw(base + 0xe) & 0x1)
return 1;
udelay(10);
}
spin_unlock_irqrestore(&card->card_lock, card->flags);
msleep(10);
}
pr_warning("Failed to lock Card (0x%lx)\n", card->base);
return 0; /* Failed to acquire the card! */
}
static void unlock_card(struct isi_board *card)
{
spin_unlock_irqrestore(&card->card_lock, card->flags);
}
/*
* ISI Card specific ops ...
*/
/* card->lock HAS to be held */
static void raise_dtr(struct isi_port *port)
{
struct isi_board *card = port->card;
unsigned long base = card->base;
u16 channel = port->channel;
if (WaitTillCardIsFree(base))
return;
outw(0x8000 | (channel << card->shift_count) | 0x02, base);
outw(0x0504, base);
InterruptTheCard(base);
port->status |= ISI_DTR;
}
/* card->lock HAS to be held */
static inline void drop_dtr(struct isi_port *port)
{
struct isi_board *card = port->card;
unsigned long base = card->base;
u16 channel = port->channel;
if (WaitTillCardIsFree(base))
return;
outw(0x8000 | (channel << card->shift_count) | 0x02, base);
outw(0x0404, base);
InterruptTheCard(base);
port->status &= ~ISI_DTR;
}
/* card->lock HAS to be held */
static inline void raise_rts(struct isi_port *port)
{
struct isi_board *card = port->card;
unsigned long base = card->base;
u16 channel = port->channel;
if (WaitTillCardIsFree(base))
return;
outw(0x8000 | (channel << card->shift_count) | 0x02, base);
outw(0x0a04, base);
InterruptTheCard(base);
port->status |= ISI_RTS;
}
/* card->lock HAS to be held */
static inline void drop_rts(struct isi_port *port)
{
struct isi_board *card = port->card;
unsigned long base = card->base;
u16 channel = port->channel;
if (WaitTillCardIsFree(base))
return;
outw(0x8000 | (channel << card->shift_count) | 0x02, base);
outw(0x0804, base);
InterruptTheCard(base);
port->status &= ~ISI_RTS;
}
/* card->lock MUST NOT be held */
static void isicom_dtr_rts(struct tty_port *port, int on)
{
struct isi_port *ip = container_of(port, struct isi_port, port);
struct isi_board *card = ip->card;
unsigned long base = card->base;
u16 channel = ip->channel;
if (!lock_card(card))
return;
if (on) {
outw(0x8000 | (channel << card->shift_count) | 0x02, base);
outw(0x0f04, base);
InterruptTheCard(base);
ip->status |= (ISI_DTR | ISI_RTS);
} else {
outw(0x8000 | (channel << card->shift_count) | 0x02, base);
outw(0x0C04, base);
InterruptTheCard(base);
ip->status &= ~(ISI_DTR | ISI_RTS);
}
unlock_card(card);
}
/* card->lock HAS to be held */
static void drop_dtr_rts(struct isi_port *port)
{
struct isi_board *card = port->card;
unsigned long base = card->base;
u16 channel = port->channel;
if (WaitTillCardIsFree(base))
return;
outw(0x8000 | (channel << card->shift_count) | 0x02, base);
outw(0x0c04, base);
InterruptTheCard(base);
port->status &= ~(ISI_RTS | ISI_DTR);
}
/*
* ISICOM Driver specific routines ...
*
*/
static inline int __isicom_paranoia_check(struct isi_port const *port,
char *name, const char *routine)
{
if (!port) {
pr_warning("Warning: bad isicom magic for dev %s in %s.\n",
name, routine);
return 1;
}
if (port->magic != ISICOM_MAGIC) {
pr_warning("Warning: NULL isicom port for dev %s in %s.\n",
name, routine);
return 1;
}
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)
{
unsigned long flags, base;
unsigned int retries;
short count = (BOARD_COUNT-1), card;
short txcount, wrd, residue, word_count, cnt;
struct isi_port *port;
struct tty_struct *tty;
/* 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;
spin_lock_irqsave(&isi_card[card].card_lock, flags);
for (retries = 0; retries < 100; retries++) {
if (inw(base + 0xe) & 0x1)
break;
udelay(2);
}
if (retries >= 100)
goto unlock;
tty = tty_port_tty_get(&port->port);
if (tty == NULL)
goto put_unlock;
for (; count > 0; count--, port++) {
/* port not active or tx disabled to force flow control */
if (!(port->port.flags & ASYNC_INITIALIZED) ||
!(port->status & ISI_TXOK))
continue;
txcount = min_t(short, TX_SIZE, port->xmit_cnt);
if (txcount <= 0 || tty->stopped || tty->hw_stopped)
continue;
if (!(inw(base + 0x02) & (1 << port->channel)))
continue;
pr_debug("txing %d bytes, port%d.\n",
txcount, port->channel + 1);
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->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->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->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)
tty_wakeup(tty);
}
put_unlock:
tty_kref_put(tty);
unlock:
spin_unlock_irqrestore(&isi_card[card].card_lock, flags);
/* 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 (port->port.flags & ASYNC_CTS_FLOW) {
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;
if (line < 0 || line > PORT_COUNT-1)
return NULL;
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 isi_board *card;
struct tty_port *tport;
tport = isicom_find_port(tty);
if (tport == NULL)
return -ENODEV;
port = container_of(tport, struct isi_port, port);
card = &isi_card[BOARD(tty->index)];
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 = &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 file *file)
{
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, struct file *file,
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;
lock_kernel();
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))) {
unlock_kernel();
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);
}
unlock_kernel();
return 0;
}
static int isicom_get_serial_info(struct isi_port *port,
struct serial_struct __user *info)
{
struct serial_struct out_info;
lock_kernel();
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;
unlock_kernel();
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 = 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;
}
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 | IRQF_DISABLED, 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_register_device(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--;
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->owner = THIS_MODULE;
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");