+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * 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.d/)
- *
- * 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/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 <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 isicom_remove(struct pci_dev *);
-
-static const 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 = isicom_remove
-};
-
-static int prev_card = 3; /* start servicing isi_card[0] */
-static struct tty_driver *isicom_normal;
-
-static void isicom_tx(struct timer_list *unused);
-static void isicom_start(struct tty_struct *tty);
-
-static DEFINE_TIMER(tx, isicom_tx);
-
-/* 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 int WaitTillCardIsFree(unsigned long base)
-{
- unsigned int count = 0;
-
- while (!(inw(base + 0xe) & 0x1) && count++ < 100)
- mdelay(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_warn("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 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_warn("Warning: bad isicom magic for dev %s in %s\n",
- name, routine);
- return 1;
- }
- if (port->magic != ISICOM_MAGIC) {
- pr_warn("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(struct timer_list *unused)
-{
- 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 (!tty_port_initialized(&port->port) ||
- !(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_warn("%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 (!tty_port_initialized(&port->port)) {
- outw(0x0000, base+0x04); /* enable interrupts */
- spin_unlock(&card->card_lock);
- return IRQ_HANDLED;
- }
-
- tty = tty_port_tty_get(&port->port);
- if (tty == NULL) {
- 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 (tty_port_check_carrier(&port->port)) {
- 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) {
- 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(&port->port, 0, TTY_BREAK);
- if (port->port.flags & ASYNC_SAK)
- do_SAK(tty);
- tty_flip_buffer_push(&port->port);
- 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(&port->port, &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(&port->port, 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(&port->port);
- }
- 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);
- }
- tty_port_set_check_carrier(&port->port, !C_CLOCAL(tty));
-
- /* flow control settings ...*/
- flow_ctrl = 0;
- tty_port_set_cts_flow(&port->port, C_CRTSCTS(tty));
- if (C_CRTSCTS(tty))
- 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 & 0xff00u), 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 *ss)
-{
- struct isi_port *port = tty->driver_data;
- int reconfig_port;
-
- if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
- return -ENODEV;
-
- mutex_lock(&port->port.mutex);
- reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) !=
- (ss->flags & ASYNC_SPD_MASK));
-
- if (!capable(CAP_SYS_ADMIN)) {
- if ((ss->close_delay != port->port.close_delay) ||
- (ss->closing_wait != port->port.closing_wait) ||
- ((ss->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) |
- (ss->flags & ASYNC_USR_MASK));
- } else {
- port->port.close_delay = ss->close_delay;
- port->port.closing_wait = ss->closing_wait;
- port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) |
- (ss->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 tty_struct *tty,
- struct serial_struct *ss)
-{
- struct isi_port *port = tty->driver_data;
-
- if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
- return -ENODEV;
-
- mutex_lock(&port->port.mutex);
-/* ss->type = ? */
- ss->line = port - isi_ports;
- ss->port = port->card->base;
- ss->irq = port->card->irq;
- ss->flags = port->port.flags;
-/* ss->baud_base = ? */
- ss->close_delay = port->port.close_delay;
- ss->closing_wait = port->port.closing_wait;
- mutex_unlock(&port->port.mutex);
- 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) && !C_CRTSCTS(tty)) {
- 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,
- .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,
- .get_serial = isicom_get_serial_info,
- .set_serial = isicom_set_serial_info,
-};
-
-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 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 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_array(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 isicom_probe(struct pci_dev *pdev,
- const struct pci_device_id *ent)
-{
- unsigned int 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++) {
- struct tty_port *tport = &board->ports[index].port;
- tty_port_init(tport);
- tport->ops = &isicom_port_ops;
- tport->close_delay = 50 * HZ/100;
- tport->closing_wait = 3000 * HZ/100;
- tty_port_register_device(tport, 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 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);
- tty_port_destroy(&board->ports[i].port);
- }
-
- 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++) {
- port->magic = ISICOM_MAGIC;
- port->card = &isi_card[idx];
- port->channel = channel;
- 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");
projects / linux.git / commitdiff