+++ /dev/null
-/*
- * specialix.c -- specialix IO8+ multiport serial driver.
- *
- * Copyright (C) 1997 Roger Wolff (R.E.Wolff@BitWizard.nl)
- * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com)
- *
- * Specialix pays for the development and support of this driver.
- * Please DO contact io8-linux@specialix.co.uk if you require
- * support. But please read the documentation (specialix.txt)
- * first.
- *
- * This driver was developped in the BitWizard linux device
- * driver service. If you require a linux device driver for your
- * product, please contact devices@BitWizard.nl for a quote.
- *
- * This code is firmly based on the riscom/8 serial driver,
- * written by Dmitry Gorodchanin. The specialix IO8+ card
- * programming information was obtained from the CL-CD1865 Data
- * Book, and Specialix document number 6200059: IO8+ Hardware
- * Functional Specification.
- *
- * 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.
- *
- * This program is distributed in the hope that it will be
- * useful, but WITHOUT ANY WARRANTY; without even the implied
- * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
- * USA.
- *
- * Revision history:
- *
- * Revision 1.0: April 1st 1997.
- * Initial release for alpha testing.
- * Revision 1.1: April 14th 1997.
- * Incorporated Richard Hudsons suggestions,
- * removed some debugging printk's.
- * Revision 1.2: April 15th 1997.
- * Ported to 2.1.x kernels.
- * Revision 1.3: April 17th 1997
- * Backported to 2.0. (Compatibility macros).
- * Revision 1.4: April 18th 1997
- * Fixed DTR/RTS bug that caused the card to indicate
- * "don't send data" to a modem after the password prompt.
- * Fixed bug for premature (fake) interrupts.
- * Revision 1.5: April 19th 1997
- * fixed a minor typo in the header file, cleanup a little.
- * performance warnings are now MAXed at once per minute.
- * Revision 1.6: May 23 1997
- * Changed the specialix=... format to include interrupt.
- * Revision 1.7: May 27 1997
- * Made many more debug printk's a compile time option.
- * Revision 1.8: Jul 1 1997
- * port to linux-2.1.43 kernel.
- * Revision 1.9: Oct 9 1998
- * Added stuff for the IO8+/PCI version.
- * Revision 1.10: Oct 22 1999 / Jan 21 2000.
- * Added stuff for setserial.
- * Nicolas Mailhot (Nicolas.Mailhot@email.enst.fr)
- *
- */
-
-#define VERSION "1.11"
-
-
-/*
- * There is a bunch of documentation about the card, jumpers, config
- * settings, restrictions, cables, device names and numbers in
- * Documentation/serial/specialix.txt
- */
-
-#include <linux/module.h>
-
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/errno.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/mm.h>
-#include <linux/serial.h>
-#include <linux/fcntl.h>
-#include <linux/major.h>
-#include <linux/delay.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/uaccess.h>
-#include <linux/gfp.h>
-
-#include "specialix_io8.h"
-#include "cd1865.h"
-
-
-/*
- This driver can spew a whole lot of debugging output at you. If you
- need maximum performance, you should disable the DEBUG define. To
- aid in debugging in the field, I'm leaving the compile-time debug
- features enabled, and disable them "runtime". That allows me to
- instruct people with problems to enable debugging without requiring
- them to recompile...
-*/
-#define DEBUG
-
-static int sx_debug;
-static int sx_rxfifo = SPECIALIX_RXFIFO;
-static int sx_rtscts;
-
-#ifdef DEBUG
-#define dprintk(f, str...) if (sx_debug & f) printk(str)
-#else
-#define dprintk(f, str...) /* nothing */
-#endif
-
-#define SX_DEBUG_FLOW 0x0001
-#define SX_DEBUG_DATA 0x0002
-#define SX_DEBUG_PROBE 0x0004
-#define SX_DEBUG_CHAN 0x0008
-#define SX_DEBUG_INIT 0x0010
-#define SX_DEBUG_RX 0x0020
-#define SX_DEBUG_TX 0x0040
-#define SX_DEBUG_IRQ 0x0080
-#define SX_DEBUG_OPEN 0x0100
-#define SX_DEBUG_TERMIOS 0x0200
-#define SX_DEBUG_SIGNALS 0x0400
-#define SX_DEBUG_FIFO 0x0800
-
-
-#define func_enter() dprintk(SX_DEBUG_FLOW, "io8: enter %s\n", __func__)
-#define func_exit() dprintk(SX_DEBUG_FLOW, "io8: exit %s\n", __func__)
-
-
-/* Configurable options: */
-
-/* Am I paranoid or not ? ;-) */
-#define SPECIALIX_PARANOIA_CHECK
-
-/*
- * The following defines are mostly for testing purposes. But if you need
- * some nice reporting in your syslog, you can define them also.
- */
-#undef SX_REPORT_FIFO
-#undef SX_REPORT_OVERRUN
-
-
-
-
-#define SPECIALIX_LEGAL_FLAGS \
- (ASYNC_HUP_NOTIFY | ASYNC_SAK | ASYNC_SPLIT_TERMIOS | \
- ASYNC_SPD_HI | ASYNC_SPEED_VHI | ASYNC_SESSION_LOCKOUT | \
- ASYNC_PGRP_LOCKOUT | ASYNC_CALLOUT_NOHUP)
-
-static struct tty_driver *specialix_driver;
-
-static struct specialix_board sx_board[SX_NBOARD] = {
- { 0, SX_IOBASE1, 9, },
- { 0, SX_IOBASE2, 11, },
- { 0, SX_IOBASE3, 12, },
- { 0, SX_IOBASE4, 15, },
-};
-
-static struct specialix_port sx_port[SX_NBOARD * SX_NPORT];
-
-
-static int sx_paranoia_check(struct specialix_port const *port,
- char *name, const char *routine)
-{
-#ifdef SPECIALIX_PARANOIA_CHECK
- static const char *badmagic = KERN_ERR
- "sx: Warning: bad specialix port magic number for device %s in %s\n";
- static const char *badinfo = KERN_ERR
- "sx: Warning: null specialix port for device %s in %s\n";
-
- if (!port) {
- printk(badinfo, name, routine);
- return 1;
- }
- if (port->magic != SPECIALIX_MAGIC) {
- printk(badmagic, name, routine);
- return 1;
- }
-#endif
- return 0;
-}
-
-
-/*
- *
- * Service functions for specialix IO8+ driver.
- *
- */
-
-/* Get board number from pointer */
-static inline int board_No(struct specialix_board *bp)
-{
- return bp - sx_board;
-}
-
-
-/* Get port number from pointer */
-static inline int port_No(struct specialix_port const *port)
-{
- return SX_PORT(port - sx_port);
-}
-
-
-/* Get pointer to board from pointer to port */
-static inline struct specialix_board *port_Board(
- struct specialix_port const *port)
-{
- return &sx_board[SX_BOARD(port - sx_port)];
-}
-
-
-/* Input Byte from CL CD186x register */
-static inline unsigned char sx_in(struct specialix_board *bp,
- unsigned short reg)
-{
- bp->reg = reg | 0x80;
- outb(reg | 0x80, bp->base + SX_ADDR_REG);
- return inb(bp->base + SX_DATA_REG);
-}
-
-
-/* Output Byte to CL CD186x register */
-static inline void sx_out(struct specialix_board *bp, unsigned short reg,
- unsigned char val)
-{
- bp->reg = reg | 0x80;
- outb(reg | 0x80, bp->base + SX_ADDR_REG);
- outb(val, bp->base + SX_DATA_REG);
-}
-
-
-/* Input Byte from CL CD186x register */
-static inline unsigned char sx_in_off(struct specialix_board *bp,
- unsigned short reg)
-{
- bp->reg = reg;
- outb(reg, bp->base + SX_ADDR_REG);
- return inb(bp->base + SX_DATA_REG);
-}
-
-
-/* Output Byte to CL CD186x register */
-static inline void sx_out_off(struct specialix_board *bp,
- unsigned short reg, unsigned char val)
-{
- bp->reg = reg;
- outb(reg, bp->base + SX_ADDR_REG);
- outb(val, bp->base + SX_DATA_REG);
-}
-
-
-/* Wait for Channel Command Register ready */
-static void sx_wait_CCR(struct specialix_board *bp)
-{
- unsigned long delay, flags;
- unsigned char ccr;
-
- for (delay = SX_CCR_TIMEOUT; delay; delay--) {
- spin_lock_irqsave(&bp->lock, flags);
- ccr = sx_in(bp, CD186x_CCR);
- spin_unlock_irqrestore(&bp->lock, flags);
- if (!ccr)
- return;
- udelay(1);
- }
-
- printk(KERN_ERR "sx%d: Timeout waiting for CCR.\n", board_No(bp));
-}
-
-
-/* Wait for Channel Command Register ready */
-static void sx_wait_CCR_off(struct specialix_board *bp)
-{
- unsigned long delay;
- unsigned char crr;
- unsigned long flags;
-
- for (delay = SX_CCR_TIMEOUT; delay; delay--) {
- spin_lock_irqsave(&bp->lock, flags);
- crr = sx_in_off(bp, CD186x_CCR);
- spin_unlock_irqrestore(&bp->lock, flags);
- if (!crr)
- return;
- udelay(1);
- }
-
- printk(KERN_ERR "sx%d: Timeout waiting for CCR.\n", board_No(bp));
-}
-
-
-/*
- * specialix IO8+ IO range functions.
- */
-
-static int sx_request_io_range(struct specialix_board *bp)
-{
- return request_region(bp->base,
- bp->flags & SX_BOARD_IS_PCI ? SX_PCI_IO_SPACE : SX_IO_SPACE,
- "specialix IO8+") == NULL;
-}
-
-
-static void sx_release_io_range(struct specialix_board *bp)
-{
- release_region(bp->base, bp->flags & SX_BOARD_IS_PCI ?
- SX_PCI_IO_SPACE : SX_IO_SPACE);
-}
-
-
-/* Set the IRQ using the RTS lines that run to the PAL on the board.... */
-static int sx_set_irq(struct specialix_board *bp)
-{
- int virq;
- int i;
- unsigned long flags;
-
- if (bp->flags & SX_BOARD_IS_PCI)
- return 1;
- switch (bp->irq) {
- /* In the same order as in the docs... */
- case 15:
- virq = 0;
- break;
- case 12:
- virq = 1;
- break;
- case 11:
- virq = 2;
- break;
- case 9:
- virq = 3;
- break;
- default:printk(KERN_ERR
- "Speclialix: cannot set irq to %d.\n", bp->irq);
- return 0;
- }
- spin_lock_irqsave(&bp->lock, flags);
- for (i = 0; i < 2; i++) {
- sx_out(bp, CD186x_CAR, i);
- sx_out(bp, CD186x_MSVRTS, ((virq >> i) & 0x1)? MSVR_RTS:0);
- }
- spin_unlock_irqrestore(&bp->lock, flags);
- return 1;
-}
-
-
-/* Reset and setup CD186x chip */
-static int sx_init_CD186x(struct specialix_board *bp)
-{
- unsigned long flags;
- int scaler;
- int rv = 1;
-
- func_enter();
- sx_wait_CCR_off(bp); /* Wait for CCR ready */
- spin_lock_irqsave(&bp->lock, flags);
- sx_out_off(bp, CD186x_CCR, CCR_HARDRESET); /* Reset CD186x chip */
- spin_unlock_irqrestore(&bp->lock, flags);
- msleep(50); /* Delay 0.05 sec */
- spin_lock_irqsave(&bp->lock, flags);
- sx_out_off(bp, CD186x_GIVR, SX_ID); /* Set ID for this chip */
- sx_out_off(bp, CD186x_GICR, 0); /* Clear all bits */
- sx_out_off(bp, CD186x_PILR1, SX_ACK_MINT); /* Prio for modem intr */
- sx_out_off(bp, CD186x_PILR2, SX_ACK_TINT); /* Prio for transmitter intr */
- sx_out_off(bp, CD186x_PILR3, SX_ACK_RINT); /* Prio for receiver intr */
- /* Set RegAckEn */
- sx_out_off(bp, CD186x_SRCR, sx_in(bp, CD186x_SRCR) | SRCR_REGACKEN);
-
- /* Setting up prescaler. We need 4 ticks per 1 ms */
- scaler = SX_OSCFREQ/SPECIALIX_TPS;
-
- sx_out_off(bp, CD186x_PPRH, scaler >> 8);
- sx_out_off(bp, CD186x_PPRL, scaler & 0xff);
- spin_unlock_irqrestore(&bp->lock, flags);
-
- if (!sx_set_irq(bp)) {
- /* Figure out how to pass this along... */
- printk(KERN_ERR "Cannot set irq to %d.\n", bp->irq);
- rv = 0;
- }
-
- func_exit();
- return rv;
-}
-
-
-static int read_cross_byte(struct specialix_board *bp, int reg, int bit)
-{
- int i;
- int t;
- unsigned long flags;
-
- spin_lock_irqsave(&bp->lock, flags);
- for (i = 0, t = 0; i < 8; i++) {
- sx_out_off(bp, CD186x_CAR, i);
- if (sx_in_off(bp, reg) & bit)
- t |= 1 << i;
- }
- spin_unlock_irqrestore(&bp->lock, flags);
-
- return t;
-}
-
-
-/* Main probing routine, also sets irq. */
-static int sx_probe(struct specialix_board *bp)
-{
- unsigned char val1, val2;
- int rev;
- int chip;
-
- func_enter();
-
- if (sx_request_io_range(bp)) {
- func_exit();
- return 1;
- }
-
- /* Are the I/O ports here ? */
- sx_out_off(bp, CD186x_PPRL, 0x5a);
- udelay(1);
- val1 = sx_in_off(bp, CD186x_PPRL);
-
- sx_out_off(bp, CD186x_PPRL, 0xa5);
- udelay(1);
- val2 = sx_in_off(bp, CD186x_PPRL);
-
-
- if (val1 != 0x5a || val2 != 0xa5) {
- printk(KERN_INFO
- "sx%d: specialix IO8+ Board at 0x%03x not found.\n",
- board_No(bp), bp->base);
- sx_release_io_range(bp);
- func_exit();
- return 1;
- }
-
- /* Check the DSR lines that Specialix uses as board
- identification */
- val1 = read_cross_byte(bp, CD186x_MSVR, MSVR_DSR);
- val2 = read_cross_byte(bp, CD186x_MSVR, MSVR_RTS);
- dprintk(SX_DEBUG_INIT,
- "sx%d: DSR lines are: %02x, rts lines are: %02x\n",
- board_No(bp), val1, val2);
-
- /* They managed to switch the bit order between the docs and
- the IO8+ card. The new PCI card now conforms to old docs.
- They changed the PCI docs to reflect the situation on the
- old card. */
- val2 = (bp->flags & SX_BOARD_IS_PCI)?0x4d : 0xb2;
- if (val1 != val2) {
- printk(KERN_INFO
- "sx%d: specialix IO8+ ID %02x at 0x%03x not found (%02x).\n",
- board_No(bp), val2, bp->base, val1);
- sx_release_io_range(bp);
- func_exit();
- return 1;
- }
-
-
- /* Reset CD186x again */
- if (!sx_init_CD186x(bp)) {
- sx_release_io_range(bp);
- func_exit();
- return 1;
- }
-
- sx_request_io_range(bp);
- bp->flags |= SX_BOARD_PRESENT;
-
- /* Chip revcode pkgtype
- GFRCR SRCR bit 7
- CD180 rev B 0x81 0
- CD180 rev C 0x82 0
- CD1864 rev A 0x82 1
- CD1865 rev A 0x83 1 -- Do not use!!! Does not work.
- CD1865 rev B 0x84 1
- -- Thanks to Gwen Wang, Cirrus Logic.
- */
-
- switch (sx_in_off(bp, CD186x_GFRCR)) {
- case 0x82:
- chip = 1864;
- rev = 'A';
- break;
- case 0x83:
- chip = 1865;
- rev = 'A';
- break;
- case 0x84:
- chip = 1865;
- rev = 'B';
- break;
- case 0x85:
- chip = 1865;
- rev = 'C';
- break; /* Does not exist at this time */
- default:
- chip = -1;
- rev = 'x';
- }
-
- dprintk(SX_DEBUG_INIT, " GFCR = 0x%02x\n", sx_in_off(bp, CD186x_GFRCR));
-
- printk(KERN_INFO
- "sx%d: specialix IO8+ board detected at 0x%03x, IRQ %d, CD%d Rev. %c.\n",
- board_No(bp), bp->base, bp->irq, chip, rev);
-
- func_exit();
- return 0;
-}
-
-/*
- *
- * Interrupt processing routines.
- * */
-
-static struct specialix_port *sx_get_port(struct specialix_board *bp,
- unsigned char const *what)
-{
- unsigned char channel;
- struct specialix_port *port = NULL;
-
- channel = sx_in(bp, CD186x_GICR) >> GICR_CHAN_OFF;
- dprintk(SX_DEBUG_CHAN, "channel: %d\n", channel);
- if (channel < CD186x_NCH) {
- port = &sx_port[board_No(bp) * SX_NPORT + channel];
- dprintk(SX_DEBUG_CHAN, "port: %d %p flags: 0x%lx\n",
- board_No(bp) * SX_NPORT + channel, port,
- port->port.flags & ASYNC_INITIALIZED);
-
- if (port->port.flags & ASYNC_INITIALIZED) {
- dprintk(SX_DEBUG_CHAN, "port: %d %p\n", channel, port);
- func_exit();
- return port;
- }
- }
- printk(KERN_INFO "sx%d: %s interrupt from invalid port %d\n",
- board_No(bp), what, channel);
- return NULL;
-}
-
-
-static void sx_receive_exc(struct specialix_board *bp)
-{
- struct specialix_port *port;
- struct tty_struct *tty;
- unsigned char status;
- unsigned char ch, flag;
-
- func_enter();
-
- port = sx_get_port(bp, "Receive");
- if (!port) {
- dprintk(SX_DEBUG_RX, "Hmm, couldn't find port.\n");
- func_exit();
- return;
- }
- tty = port->port.tty;
-
- status = sx_in(bp, CD186x_RCSR);
-
- dprintk(SX_DEBUG_RX, "status: 0x%x\n", status);
- if (status & RCSR_OE) {
- port->overrun++;
- dprintk(SX_DEBUG_FIFO,
- "sx%d: port %d: Overrun. Total %ld overruns.\n",
- board_No(bp), port_No(port), port->overrun);
- }
- status &= port->mark_mask;
-
- /* This flip buffer check needs to be below the reading of the
- status register to reset the chip's IRQ.... */
- if (tty_buffer_request_room(tty, 1) == 0) {
- dprintk(SX_DEBUG_FIFO,
- "sx%d: port %d: Working around flip buffer overflow.\n",
- board_No(bp), port_No(port));
- func_exit();
- return;
- }
-
- ch = sx_in(bp, CD186x_RDR);
- if (!status) {
- func_exit();
- return;
- }
- if (status & RCSR_TOUT) {
- printk(KERN_INFO
- "sx%d: port %d: Receiver timeout. Hardware problems ?\n",
- board_No(bp), port_No(port));
- func_exit();
- return;
-
- } else if (status & RCSR_BREAK) {
- dprintk(SX_DEBUG_RX, "sx%d: port %d: Handling break...\n",
- board_No(bp), port_No(port));
- flag = TTY_BREAK;
- if (port->port.flags & ASYNC_SAK)
- do_SAK(tty);
-
- } else if (status & RCSR_PE)
- flag = TTY_PARITY;
-
- else if (status & RCSR_FE)
- flag = TTY_FRAME;
-
- else if (status & RCSR_OE)
- flag = TTY_OVERRUN;
-
- else
- flag = TTY_NORMAL;
-
- if (tty_insert_flip_char(tty, ch, flag))
- tty_flip_buffer_push(tty);
- func_exit();
-}
-
-
-static void sx_receive(struct specialix_board *bp)
-{
- struct specialix_port *port;
- struct tty_struct *tty;
- unsigned char count;
-
- func_enter();
-
- port = sx_get_port(bp, "Receive");
- if (port == NULL) {
- dprintk(SX_DEBUG_RX, "Hmm, couldn't find port.\n");
- func_exit();
- return;
- }
- tty = port->port.tty;
-
- count = sx_in(bp, CD186x_RDCR);
- dprintk(SX_DEBUG_RX, "port: %p: count: %d\n", port, count);
- port->hits[count > 8 ? 9 : count]++;
-
- while (count--)
- tty_insert_flip_char(tty, sx_in(bp, CD186x_RDR), TTY_NORMAL);
- tty_flip_buffer_push(tty);
- func_exit();
-}
-
-
-static void sx_transmit(struct specialix_board *bp)
-{
- struct specialix_port *port;
- struct tty_struct *tty;
- unsigned char count;
-
- func_enter();
- port = sx_get_port(bp, "Transmit");
- if (port == NULL) {
- func_exit();
- return;
- }
- dprintk(SX_DEBUG_TX, "port: %p\n", port);
- tty = port->port.tty;
-
- if (port->IER & IER_TXEMPTY) {
- /* FIFO drained */
- sx_out(bp, CD186x_CAR, port_No(port));
- port->IER &= ~IER_TXEMPTY;
- sx_out(bp, CD186x_IER, port->IER);
- func_exit();
- return;
- }
-
- if ((port->xmit_cnt <= 0 && !port->break_length)
- || tty->stopped || tty->hw_stopped) {
- sx_out(bp, CD186x_CAR, port_No(port));
- port->IER &= ~IER_TXRDY;
- sx_out(bp, CD186x_IER, port->IER);
- func_exit();
- return;
- }
-
- if (port->break_length) {
- if (port->break_length > 0) {
- if (port->COR2 & COR2_ETC) {
- sx_out(bp, CD186x_TDR, CD186x_C_ESC);
- sx_out(bp, CD186x_TDR, CD186x_C_SBRK);
- port->COR2 &= ~COR2_ETC;
- }
- count = min_t(int, port->break_length, 0xff);
- sx_out(bp, CD186x_TDR, CD186x_C_ESC);
- sx_out(bp, CD186x_TDR, CD186x_C_DELAY);
- sx_out(bp, CD186x_TDR, count);
- port->break_length -= count;
- if (port->break_length == 0)
- port->break_length--;
- } else {
- sx_out(bp, CD186x_TDR, CD186x_C_ESC);
- sx_out(bp, CD186x_TDR, CD186x_C_EBRK);
- sx_out(bp, CD186x_COR2, port->COR2);
- sx_wait_CCR(bp);
- sx_out(bp, CD186x_CCR, CCR_CORCHG2);
- port->break_length = 0;
- }
-
- func_exit();
- return;
- }
-
- count = CD186x_NFIFO;
- do {
- sx_out(bp, CD186x_TDR, port->xmit_buf[port->xmit_tail++]);
- port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE-1);
- if (--port->xmit_cnt <= 0)
- break;
- } while (--count > 0);
-
- if (port->xmit_cnt <= 0) {
- sx_out(bp, CD186x_CAR, port_No(port));
- port->IER &= ~IER_TXRDY;
- sx_out(bp, CD186x_IER, port->IER);
- }
- if (port->xmit_cnt <= port->wakeup_chars)
- tty_wakeup(tty);
-
- func_exit();
-}
-
-
-static void sx_check_modem(struct specialix_board *bp)
-{
- struct specialix_port *port;
- struct tty_struct *tty;
- unsigned char mcr;
- int msvr_cd;
-
- dprintk(SX_DEBUG_SIGNALS, "Modem intr. ");
- port = sx_get_port(bp, "Modem");
- if (port == NULL)
- return;
-
- tty = port->port.tty;
-
- mcr = sx_in(bp, CD186x_MCR);
-
- if ((mcr & MCR_CDCHG)) {
- dprintk(SX_DEBUG_SIGNALS, "CD just changed... ");
- msvr_cd = sx_in(bp, CD186x_MSVR) & MSVR_CD;
- if (msvr_cd) {
- dprintk(SX_DEBUG_SIGNALS, "Waking up guys in open.\n");
- wake_up_interruptible(&port->port.open_wait);
- } else {
- dprintk(SX_DEBUG_SIGNALS, "Sending HUP.\n");
- tty_hangup(tty);
- }
- }
-
-#ifdef SPECIALIX_BRAIN_DAMAGED_CTS
- if (mcr & MCR_CTSCHG) {
- if (sx_in(bp, CD186x_MSVR) & MSVR_CTS) {
- tty->hw_stopped = 0;
- port->IER |= IER_TXRDY;
- if (port->xmit_cnt <= port->wakeup_chars)
- tty_wakeup(tty);
- } else {
- tty->hw_stopped = 1;
- port->IER &= ~IER_TXRDY;
- }
- sx_out(bp, CD186x_IER, port->IER);
- }
- if (mcr & MCR_DSSXHG) {
- if (sx_in(bp, CD186x_MSVR) & MSVR_DSR) {
- tty->hw_stopped = 0;
- port->IER |= IER_TXRDY;
- if (port->xmit_cnt <= port->wakeup_chars)
- tty_wakeup(tty);
- } else {
- tty->hw_stopped = 1;
- port->IER &= ~IER_TXRDY;
- }
- sx_out(bp, CD186x_IER, port->IER);
- }
-#endif /* SPECIALIX_BRAIN_DAMAGED_CTS */
-
- /* Clear change bits */
- sx_out(bp, CD186x_MCR, 0);
-}
-
-
-/* The main interrupt processing routine */
-static irqreturn_t sx_interrupt(int dummy, void *dev_id)
-{
- unsigned char status;
- unsigned char ack;
- struct specialix_board *bp = dev_id;
- unsigned long loop = 0;
- int saved_reg;
- unsigned long flags;
-
- func_enter();
-
- spin_lock_irqsave(&bp->lock, flags);
-
- dprintk(SX_DEBUG_FLOW, "enter %s port %d room: %ld\n", __func__,
- port_No(sx_get_port(bp, "INT")),
- SERIAL_XMIT_SIZE - sx_get_port(bp, "ITN")->xmit_cnt - 1);
- if (!(bp->flags & SX_BOARD_ACTIVE)) {
- dprintk(SX_DEBUG_IRQ, "sx: False interrupt. irq %d.\n",
- bp->irq);
- spin_unlock_irqrestore(&bp->lock, flags);
- func_exit();
- return IRQ_NONE;
- }
-
- saved_reg = bp->reg;
-
- while (++loop < 16) {
- status = sx_in(bp, CD186x_SRSR) &
- (SRSR_RREQint | SRSR_TREQint | SRSR_MREQint);
- if (status == 0)
- break;
- if (status & SRSR_RREQint) {
- ack = sx_in(bp, CD186x_RRAR);
-
- if (ack == (SX_ID | GIVR_IT_RCV))
- sx_receive(bp);
- else if (ack == (SX_ID | GIVR_IT_REXC))
- sx_receive_exc(bp);
- else
- printk(KERN_ERR
- "sx%d: status: 0x%x Bad receive ack 0x%02x.\n",
- board_No(bp), status, ack);
-
- } else if (status & SRSR_TREQint) {
- ack = sx_in(bp, CD186x_TRAR);
-
- if (ack == (SX_ID | GIVR_IT_TX))
- sx_transmit(bp);
- else
- printk(KERN_ERR "sx%d: status: 0x%x Bad transmit ack 0x%02x. port: %d\n",
- board_No(bp), status, ack,
- port_No(sx_get_port(bp, "Int")));
- } else if (status & SRSR_MREQint) {
- ack = sx_in(bp, CD186x_MRAR);
-
- if (ack == (SX_ID | GIVR_IT_MODEM))
- sx_check_modem(bp);
- else
- printk(KERN_ERR
- "sx%d: status: 0x%x Bad modem ack 0x%02x.\n",
- board_No(bp), status, ack);
-
- }
-
- sx_out(bp, CD186x_EOIR, 0); /* Mark end of interrupt */
- }
- bp->reg = saved_reg;
- outb(bp->reg, bp->base + SX_ADDR_REG);
- spin_unlock_irqrestore(&bp->lock, flags);
- func_exit();
- return IRQ_HANDLED;
-}
-
-
-/*
- * Routines for open & close processing.
- */
-
-static void turn_ints_off(struct specialix_board *bp)
-{
- unsigned long flags;
-
- func_enter();
- spin_lock_irqsave(&bp->lock, flags);
- (void) sx_in_off(bp, 0); /* Turn off interrupts. */
- spin_unlock_irqrestore(&bp->lock, flags);
-
- func_exit();
-}
-
-static void turn_ints_on(struct specialix_board *bp)
-{
- unsigned long flags;
-
- func_enter();
-
- spin_lock_irqsave(&bp->lock, flags);
- (void) sx_in(bp, 0); /* Turn ON interrupts. */
- spin_unlock_irqrestore(&bp->lock, flags);
-
- func_exit();
-}
-
-
-/* Called with disabled interrupts */
-static int sx_setup_board(struct specialix_board *bp)
-{
- int error;
-
- if (bp->flags & SX_BOARD_ACTIVE)
- return 0;
-
- if (bp->flags & SX_BOARD_IS_PCI)
- error = request_irq(bp->irq, sx_interrupt,
- IRQF_DISABLED | IRQF_SHARED, "specialix IO8+", bp);
- else
- error = request_irq(bp->irq, sx_interrupt,
- IRQF_DISABLED, "specialix IO8+", bp);
-
- if (error)
- return error;
-
- turn_ints_on(bp);
- bp->flags |= SX_BOARD_ACTIVE;
-
- return 0;
-}
-
-
-/* Called with disabled interrupts */
-static void sx_shutdown_board(struct specialix_board *bp)
-{
- func_enter();
-
- if (!(bp->flags & SX_BOARD_ACTIVE)) {
- func_exit();
- return;
- }
-
- bp->flags &= ~SX_BOARD_ACTIVE;
-
- dprintk(SX_DEBUG_IRQ, "Freeing IRQ%d for board %d.\n",
- bp->irq, board_No(bp));
- free_irq(bp->irq, bp);
- turn_ints_off(bp);
- func_exit();
-}
-
-static unsigned int sx_crtscts(struct tty_struct *tty)
-{
- if (sx_rtscts)
- return C_CRTSCTS(tty);
- return 1;
-}
-
-/*
- * Setting up port characteristics.
- * Must be called with disabled interrupts
- */
-static void sx_change_speed(struct specialix_board *bp,
- struct specialix_port *port)
-{
- struct tty_struct *tty;
- unsigned long baud;
- long tmp;
- unsigned char cor1 = 0, cor3 = 0;
- unsigned char mcor1 = 0, mcor2 = 0;
- static unsigned long again;
- unsigned long flags;
-
- func_enter();
-
- tty = port->port.tty;
- if (!tty || !tty->termios) {
- func_exit();
- return;
- }
-
- port->IER = 0;
- port->COR2 = 0;
- /* Select port on the board */
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_CAR, port_No(port));
-
- /* The Specialix board doens't implement the RTS lines.
- They are used to set the IRQ level. Don't touch them. */
- if (sx_crtscts(tty))
- port->MSVR = MSVR_DTR | (sx_in(bp, CD186x_MSVR) & MSVR_RTS);
- else
- port->MSVR = (sx_in(bp, CD186x_MSVR) & MSVR_RTS);
- spin_unlock_irqrestore(&bp->lock, flags);
- dprintk(SX_DEBUG_TERMIOS, "sx: got MSVR=%02x.\n", port->MSVR);
- baud = tty_get_baud_rate(tty);
-
- if (baud == 38400) {
- if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
- baud = 57600;
- if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
- baud = 115200;
- }
-
- if (!baud) {
- /* Drop DTR & exit */
- dprintk(SX_DEBUG_TERMIOS, "Dropping DTR... Hmm....\n");
- if (!sx_crtscts(tty)) {
- port->MSVR &= ~MSVR_DTR;
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_MSVR, port->MSVR);
- spin_unlock_irqrestore(&bp->lock, flags);
- } else
- dprintk(SX_DEBUG_TERMIOS, "Can't drop DTR: no DTR.\n");
- return;
- } else {
- /* Set DTR on */
- if (!sx_crtscts(tty))
- port->MSVR |= MSVR_DTR;
- }
-
- /*
- * Now we must calculate some speed depended things
- */
-
- /* Set baud rate for port */
- tmp = port->custom_divisor ;
- if (tmp)
- printk(KERN_INFO
- "sx%d: Using custom baud rate divisor %ld. \n"
- "This is an untested option, please be careful.\n",
- port_No(port), tmp);
- else
- tmp = (((SX_OSCFREQ + baud/2) / baud + CD186x_TPC/2) /
- CD186x_TPC);
-
- if (tmp < 0x10 && time_before(again, jiffies)) {
- again = jiffies + HZ * 60;
- /* Page 48 of version 2.0 of the CL-CD1865 databook */
- if (tmp >= 12) {
- printk(KERN_INFO "sx%d: Baud rate divisor is %ld. \n"
- "Performance degradation is possible.\n"
- "Read specialix.txt for more info.\n",
- port_No(port), tmp);
- } else {
- printk(KERN_INFO "sx%d: Baud rate divisor is %ld. \n"
- "Warning: overstressing Cirrus chip. This might not work.\n"
- "Read specialix.txt for more info.\n", port_No(port), tmp);
- }
- }
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_RBPRH, (tmp >> 8) & 0xff);
- sx_out(bp, CD186x_TBPRH, (tmp >> 8) & 0xff);
- sx_out(bp, CD186x_RBPRL, tmp & 0xff);
- sx_out(bp, CD186x_TBPRL, tmp & 0xff);
- spin_unlock_irqrestore(&bp->lock, flags);
- if (port->custom_divisor)
- baud = (SX_OSCFREQ + port->custom_divisor/2) /
- port->custom_divisor;
- baud = (baud + 5) / 10; /* Estimated CPS */
-
- /* Two timer ticks seems enough to wakeup something like SLIP driver */
- tmp = ((baud + HZ/2) / HZ) * 2 - CD186x_NFIFO;
- port->wakeup_chars = (tmp < 0) ? 0 : ((tmp >= SERIAL_XMIT_SIZE) ?
- SERIAL_XMIT_SIZE - 1 : tmp);
-
- /* Receiver timeout will be transmission time for 1.5 chars */
- tmp = (SPECIALIX_TPS + SPECIALIX_TPS/2 + baud/2) / baud;
- tmp = (tmp > 0xff) ? 0xff : tmp;
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_RTPR, tmp);
- spin_unlock_irqrestore(&bp->lock, flags);
- switch (C_CSIZE(tty)) {
- case CS5:
- cor1 |= COR1_5BITS;
- break;
- case CS6:
- cor1 |= COR1_6BITS;
- break;
- case CS7:
- cor1 |= COR1_7BITS;
- break;
- case CS8:
- cor1 |= COR1_8BITS;
- break;
- }
-
- if (C_CSTOPB(tty))
- cor1 |= COR1_2SB;
-
- cor1 |= COR1_IGNORE;
- if (C_PARENB(tty)) {
- cor1 |= COR1_NORMPAR;
- if (C_PARODD(tty))
- cor1 |= COR1_ODDP;
- if (I_INPCK(tty))
- cor1 &= ~COR1_IGNORE;
- }
- /* Set marking of some errors */
- port->mark_mask = RCSR_OE | RCSR_TOUT;
- if (I_INPCK(tty))
- port->mark_mask |= RCSR_FE | RCSR_PE;
- if (I_BRKINT(tty) || I_PARMRK(tty))
- port->mark_mask |= RCSR_BREAK;
- if (I_IGNPAR(tty))
- port->mark_mask &= ~(RCSR_FE | RCSR_PE);
- if (I_IGNBRK(tty)) {
- port->mark_mask &= ~RCSR_BREAK;
- if (I_IGNPAR(tty))
- /* Real raw mode. Ignore all */
- port->mark_mask &= ~RCSR_OE;
- }
- /* Enable Hardware Flow Control */
- if (C_CRTSCTS(tty)) {
-#ifdef SPECIALIX_BRAIN_DAMAGED_CTS
- port->IER |= IER_DSR | IER_CTS;
- mcor1 |= MCOR1_DSRZD | MCOR1_CTSZD;
- mcor2 |= MCOR2_DSROD | MCOR2_CTSOD;
- spin_lock_irqsave(&bp->lock, flags);
- tty->hw_stopped = !(sx_in(bp, CD186x_MSVR) &
- (MSVR_CTS|MSVR_DSR));
- spin_unlock_irqrestore(&bp->lock, flags);
-#else
- port->COR2 |= COR2_CTSAE;
-#endif
- }
- /* Enable Software Flow Control. FIXME: I'm not sure about this */
- /* Some people reported that it works, but I still doubt it */
- if (I_IXON(tty)) {
- port->COR2 |= COR2_TXIBE;
- cor3 |= (COR3_FCT | COR3_SCDE);
- if (I_IXANY(tty))
- port->COR2 |= COR2_IXM;
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_SCHR1, START_CHAR(tty));
- sx_out(bp, CD186x_SCHR2, STOP_CHAR(tty));
- sx_out(bp, CD186x_SCHR3, START_CHAR(tty));
- sx_out(bp, CD186x_SCHR4, STOP_CHAR(tty));
- spin_unlock_irqrestore(&bp->lock, flags);
- }
- if (!C_CLOCAL(tty)) {
- /* Enable CD check */
- port->IER |= IER_CD;
- mcor1 |= MCOR1_CDZD;
- mcor2 |= MCOR2_CDOD;
- }
-
- if (C_CREAD(tty))
- /* Enable receiver */
- port->IER |= IER_RXD;
-
- /* Set input FIFO size (1-8 bytes) */
- cor3 |= sx_rxfifo;
- /* Setting up CD186x channel registers */
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_COR1, cor1);
- sx_out(bp, CD186x_COR2, port->COR2);
- sx_out(bp, CD186x_COR3, cor3);
- spin_unlock_irqrestore(&bp->lock, flags);
- /* Make CD186x know about registers change */
- sx_wait_CCR(bp);
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_CCR, CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3);
- /* Setting up modem option registers */
- dprintk(SX_DEBUG_TERMIOS, "Mcor1 = %02x, mcor2 = %02x.\n",
- mcor1, mcor2);
- sx_out(bp, CD186x_MCOR1, mcor1);
- sx_out(bp, CD186x_MCOR2, mcor2);
- spin_unlock_irqrestore(&bp->lock, flags);
- /* Enable CD186x transmitter & receiver */
- sx_wait_CCR(bp);
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_CCR, CCR_TXEN | CCR_RXEN);
- /* Enable interrupts */
- sx_out(bp, CD186x_IER, port->IER);
- /* And finally set the modem lines... */
- sx_out(bp, CD186x_MSVR, port->MSVR);
- spin_unlock_irqrestore(&bp->lock, flags);
-
- func_exit();
-}
-
-
-/* Must be called with interrupts enabled */
-static int sx_setup_port(struct specialix_board *bp,
- struct specialix_port *port)
-{
- unsigned long flags;
-
- func_enter();
-
- if (port->port.flags & ASYNC_INITIALIZED) {
- func_exit();
- return 0;
- }
-
- if (!port->xmit_buf) {
- /* We may sleep in get_zeroed_page() */
- unsigned long tmp;
-
- tmp = get_zeroed_page(GFP_KERNEL);
- if (tmp == 0L) {
- func_exit();
- return -ENOMEM;
- }
-
- if (port->xmit_buf) {
- free_page(tmp);
- func_exit();
- return -ERESTARTSYS;
- }
- port->xmit_buf = (unsigned char *) tmp;
- }
-
- spin_lock_irqsave(&port->lock, flags);
-
- if (port->port.tty)
- clear_bit(TTY_IO_ERROR, &port->port.tty->flags);
-
- port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
- sx_change_speed(bp, port);
- port->port.flags |= ASYNC_INITIALIZED;
-
- spin_unlock_irqrestore(&port->lock, flags);
-
-
- func_exit();
- return 0;
-}
-
-
-/* Must be called with interrupts disabled */
-static void sx_shutdown_port(struct specialix_board *bp,
- struct specialix_port *port)
-{
- struct tty_struct *tty;
- int i;
- unsigned long flags;
-
- func_enter();
-
- if (!(port->port.flags & ASYNC_INITIALIZED)) {
- func_exit();
- return;
- }
-
- if (sx_debug & SX_DEBUG_FIFO) {
- dprintk(SX_DEBUG_FIFO,
- "sx%d: port %d: %ld overruns, FIFO hits [ ",
- board_No(bp), port_No(port), port->overrun);
- for (i = 0; i < 10; i++)
- dprintk(SX_DEBUG_FIFO, "%ld ", port->hits[i]);
- dprintk(SX_DEBUG_FIFO, "].\n");
- }
-
- if (port->xmit_buf) {
- free_page((unsigned long) port->xmit_buf);
- port->xmit_buf = NULL;
- }
-
- /* Select port */
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_CAR, port_No(port));
-
- tty = port->port.tty;
- if (tty == NULL || C_HUPCL(tty)) {
- /* Drop DTR */
- sx_out(bp, CD186x_MSVDTR, 0);
- }
- spin_unlock_irqrestore(&bp->lock, flags);
- /* Reset port */
- sx_wait_CCR(bp);
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_CCR, CCR_SOFTRESET);
- /* Disable all interrupts from this port */
- port->IER = 0;
- sx_out(bp, CD186x_IER, port->IER);
- spin_unlock_irqrestore(&bp->lock, flags);
- if (tty)
- set_bit(TTY_IO_ERROR, &tty->flags);
- port->port.flags &= ~ASYNC_INITIALIZED;
-
- if (!bp->count)
- sx_shutdown_board(bp);
- func_exit();
-}
-
-
-static int block_til_ready(struct tty_struct *tty, struct file *filp,
- struct specialix_port *port)
-{
- DECLARE_WAITQUEUE(wait, current);
- struct specialix_board *bp = port_Board(port);
- int retval;
- int do_clocal = 0;
- int CD;
- unsigned long flags;
-
- func_enter();
-
- /*
- * If the device is in the middle of being closed, then block
- * until it's done, and then try again.
- */
- if (tty_hung_up_p(filp) || port->port.flags & ASYNC_CLOSING) {
- interruptible_sleep_on(&port->port.close_wait);
- if (port->port.flags & ASYNC_HUP_NOTIFY) {
- func_exit();
- return -EAGAIN;
- } else {
- func_exit();
- return -ERESTARTSYS;
- }
- }
-
- /*
- * If non-blocking mode is set, or the port is not enabled,
- * then make the check up front and then exit.
- */
- if ((filp->f_flags & O_NONBLOCK) ||
- (tty->flags & (1 << TTY_IO_ERROR))) {
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- func_exit();
- return 0;
- }
-
- if (C_CLOCAL(tty))
- do_clocal = 1;
-
- /*
- * Block waiting for the carrier detect and the line to become
- * free (i.e., not in use by the callout). While we are in
- * this loop, info->count is dropped by one, so that
- * rs_close() knows when to free things. We restore it upon
- * exit, either normal or abnormal.
- */
- retval = 0;
- add_wait_queue(&port->port.open_wait, &wait);
- spin_lock_irqsave(&port->lock, flags);
- if (!tty_hung_up_p(filp))
- port->port.count--;
- spin_unlock_irqrestore(&port->lock, flags);
- port->port.blocked_open++;
- while (1) {
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_CAR, port_No(port));
- CD = sx_in(bp, CD186x_MSVR) & MSVR_CD;
- if (sx_crtscts(tty)) {
- /* Activate RTS */
- port->MSVR |= MSVR_DTR; /* WTF? */
- sx_out(bp, CD186x_MSVR, port->MSVR);
- } else {
- /* Activate DTR */
- port->MSVR |= MSVR_DTR;
- sx_out(bp, CD186x_MSVR, port->MSVR);
- }
- spin_unlock_irqrestore(&bp->lock, flags);
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) ||
- !(port->port.flags & ASYNC_INITIALIZED)) {
- if (port->port.flags & ASYNC_HUP_NOTIFY)
- retval = -EAGAIN;
- else
- retval = -ERESTARTSYS;
- break;
- }
- if (!(port->port.flags & ASYNC_CLOSING) &&
- (do_clocal || CD))
- break;
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
- tty_unlock();
- schedule();
- tty_lock();
- }
-
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&port->port.open_wait, &wait);
- spin_lock_irqsave(&port->lock, flags);
- if (!tty_hung_up_p(filp))
- port->port.count++;
- port->port.blocked_open--;
- spin_unlock_irqrestore(&port->lock, flags);
- if (retval) {
- func_exit();
- return retval;
- }
-
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- func_exit();
- return 0;
-}
-
-
-static int sx_open(struct tty_struct *tty, struct file *filp)
-{
- int board;
- int error;
- struct specialix_port *port;
- struct specialix_board *bp;
- int i;
- unsigned long flags;
-
- func_enter();
-
- board = SX_BOARD(tty->index);
-
- if (board >= SX_NBOARD || !(sx_board[board].flags & SX_BOARD_PRESENT)) {
- func_exit();
- return -ENODEV;
- }
-
- bp = &sx_board[board];
- port = sx_port + board * SX_NPORT + SX_PORT(tty->index);
- port->overrun = 0;
- for (i = 0; i < 10; i++)
- port->hits[i] = 0;
-
- dprintk(SX_DEBUG_OPEN,
- "Board = %d, bp = %p, port = %p, portno = %d.\n",
- board, bp, port, SX_PORT(tty->index));
-
- if (sx_paranoia_check(port, tty->name, "sx_open")) {
- func_enter();
- return -ENODEV;
- }
-
- error = sx_setup_board(bp);
- if (error) {
- func_exit();
- return error;
- }
-
- spin_lock_irqsave(&bp->lock, flags);
- port->port.count++;
- bp->count++;
- tty->driver_data = port;
- port->port.tty = tty;
- spin_unlock_irqrestore(&bp->lock, flags);
-
- error = sx_setup_port(bp, port);
- if (error) {
- func_enter();
- return error;
- }
-
- error = block_til_ready(tty, filp, port);
- if (error) {
- func_enter();
- return error;
- }
-
- func_exit();
- return 0;
-}
-
-static void sx_flush_buffer(struct tty_struct *tty)
-{
- struct specialix_port *port = tty->driver_data;
- unsigned long flags;
- struct specialix_board *bp;
-
- func_enter();
-
- if (sx_paranoia_check(port, tty->name, "sx_flush_buffer")) {
- func_exit();
- return;
- }
-
- bp = port_Board(port);
- spin_lock_irqsave(&port->lock, flags);
- port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
- spin_unlock_irqrestore(&port->lock, flags);
- tty_wakeup(tty);
-
- func_exit();
-}
-
-static void sx_close(struct tty_struct *tty, struct file *filp)
-{
- struct specialix_port *port = tty->driver_data;
- struct specialix_board *bp;
- unsigned long flags;
- unsigned long timeout;
-
- func_enter();
- if (!port || sx_paranoia_check(port, tty->name, "close")) {
- func_exit();
- return;
- }
- spin_lock_irqsave(&port->lock, flags);
-
- if (tty_hung_up_p(filp)) {
- spin_unlock_irqrestore(&port->lock, flags);
- func_exit();
- return;
- }
-
- bp = port_Board(port);
- if (tty->count == 1 && port->port.count != 1) {
- printk(KERN_ERR "sx%d: sx_close: bad port count;"
- " tty->count is 1, port count is %d\n",
- board_No(bp), port->port.count);
- port->port.count = 1;
- }
-
- if (port->port.count > 1) {
- port->port.count--;
- bp->count--;
-
- spin_unlock_irqrestore(&port->lock, flags);
-
- func_exit();
- return;
- }
- port->port.flags |= ASYNC_CLOSING;
- /*
- * Now we wait for the transmit buffer to clear; and we notify
- * the line discipline to only process XON/XOFF characters.
- */
- tty->closing = 1;
- spin_unlock_irqrestore(&port->lock, flags);
- dprintk(SX_DEBUG_OPEN, "Closing\n");
- if (port->port.closing_wait != ASYNC_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, port->port.closing_wait);
- /*
- * At this point we stop accepting input. To do this, we
- * disable the receive line status interrupts, and tell the
- * interrupt driver to stop checking the data ready bit in the
- * line status register.
- */
- dprintk(SX_DEBUG_OPEN, "Closed\n");
- port->IER &= ~IER_RXD;
- if (port->port.flags & ASYNC_INITIALIZED) {
- port->IER &= ~IER_TXRDY;
- port->IER |= IER_TXEMPTY;
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_CAR, port_No(port));
- sx_out(bp, CD186x_IER, port->IER);
- spin_unlock_irqrestore(&bp->lock, flags);
- /*
- * Before we drop DTR, make sure the UART transmitter
- * has completely drained; this is especially
- * important if there is a transmit FIFO!
- */
- timeout = jiffies+HZ;
- while (port->IER & IER_TXEMPTY) {
- set_current_state(TASK_INTERRUPTIBLE);
- msleep_interruptible(jiffies_to_msecs(port->timeout));
- if (time_after(jiffies, timeout)) {
- printk(KERN_INFO "Timeout waiting for close\n");
- break;
- }
- }
-
- }
-
- if (--bp->count < 0) {
- printk(KERN_ERR
- "sx%d: sx_shutdown_port: bad board count: %d port: %d\n",
- board_No(bp), bp->count, tty->index);
- bp->count = 0;
- }
- if (--port->port.count < 0) {
- printk(KERN_ERR
- "sx%d: sx_close: bad port count for tty%d: %d\n",
- board_No(bp), port_No(port), port->port.count);
- port->port.count = 0;
- }
-
- sx_shutdown_port(bp, port);
- sx_flush_buffer(tty);
- tty_ldisc_flush(tty);
- spin_lock_irqsave(&port->lock, flags);
- tty->closing = 0;
- port->port.tty = NULL;
- spin_unlock_irqrestore(&port->lock, flags);
- if (port->port.blocked_open) {
- if (port->port.close_delay)
- msleep_interruptible(
- jiffies_to_msecs(port->port.close_delay));
- wake_up_interruptible(&port->port.open_wait);
- }
- port->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
- wake_up_interruptible(&port->port.close_wait);
-
- func_exit();
-}
-
-
-static int sx_write(struct tty_struct *tty,
- const unsigned char *buf, int count)
-{
- struct specialix_port *port = tty->driver_data;
- struct specialix_board *bp;
- int c, total = 0;
- unsigned long flags;
-
- func_enter();
- if (sx_paranoia_check(port, tty->name, "sx_write")) {
- func_exit();
- return 0;
- }
-
- bp = port_Board(port);
-
- if (!port->xmit_buf) {
- func_exit();
- return 0;
- }
-
- while (1) {
- spin_lock_irqsave(&port->lock, flags);
- c = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
- SERIAL_XMIT_SIZE - port->xmit_head));
- if (c <= 0) {
- spin_unlock_irqrestore(&port->lock, flags);
- break;
- }
- memcpy(port->xmit_buf + port->xmit_head, buf, c);
- port->xmit_head = (port->xmit_head + c) & (SERIAL_XMIT_SIZE-1);
- port->xmit_cnt += c;
- spin_unlock_irqrestore(&port->lock, flags);
-
- buf += c;
- count -= c;
- total += c;
- }
-
- spin_lock_irqsave(&bp->lock, flags);
- if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped &&
- !(port->IER & IER_TXRDY)) {
- port->IER |= IER_TXRDY;
- sx_out(bp, CD186x_CAR, port_No(port));
- sx_out(bp, CD186x_IER, port->IER);
- }
- spin_unlock_irqrestore(&bp->lock, flags);
- func_exit();
-
- return total;
-}
-
-
-static int sx_put_char(struct tty_struct *tty, unsigned char ch)
-{
- struct specialix_port *port = tty->driver_data;
- unsigned long flags;
- struct specialix_board *bp;
-
- func_enter();
-
- if (sx_paranoia_check(port, tty->name, "sx_put_char")) {
- func_exit();
- return 0;
- }
- dprintk(SX_DEBUG_TX, "check tty: %p %p\n", tty, port->xmit_buf);
- if (!port->xmit_buf) {
- func_exit();
- return 0;
- }
- bp = port_Board(port);
- spin_lock_irqsave(&port->lock, flags);
-
- dprintk(SX_DEBUG_TX, "xmit_cnt: %d xmit_buf: %p\n",
- port->xmit_cnt, port->xmit_buf);
- if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1 || !port->xmit_buf) {
- spin_unlock_irqrestore(&port->lock, flags);
- dprintk(SX_DEBUG_TX, "Exit size\n");
- func_exit();
- return 0;
- }
- dprintk(SX_DEBUG_TX, "Handle xmit: %p %p\n", port, port->xmit_buf);
- port->xmit_buf[port->xmit_head++] = ch;
- port->xmit_head &= SERIAL_XMIT_SIZE - 1;
- port->xmit_cnt++;
- spin_unlock_irqrestore(&port->lock, flags);
-
- func_exit();
- return 1;
-}
-
-
-static void sx_flush_chars(struct tty_struct *tty)
-{
- struct specialix_port *port = tty->driver_data;
- unsigned long flags;
- struct specialix_board *bp = port_Board(port);
-
- func_enter();
-
- if (sx_paranoia_check(port, tty->name, "sx_flush_chars")) {
- func_exit();
- return;
- }
- if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
- !port->xmit_buf) {
- func_exit();
- return;
- }
- spin_lock_irqsave(&bp->lock, flags);
- port->IER |= IER_TXRDY;
- sx_out(port_Board(port), CD186x_CAR, port_No(port));
- sx_out(port_Board(port), CD186x_IER, port->IER);
- spin_unlock_irqrestore(&bp->lock, flags);
-
- func_exit();
-}
-
-
-static int sx_write_room(struct tty_struct *tty)
-{
- struct specialix_port *port = tty->driver_data;
- int ret;
-
- func_enter();
-
- if (sx_paranoia_check(port, tty->name, "sx_write_room")) {
- func_exit();
- return 0;
- }
-
- ret = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
- if (ret < 0)
- ret = 0;
-
- func_exit();
- return ret;
-}
-
-
-static int sx_chars_in_buffer(struct tty_struct *tty)
-{
- struct specialix_port *port = tty->driver_data;
-
- func_enter();
-
- if (sx_paranoia_check(port, tty->name, "sx_chars_in_buffer")) {
- func_exit();
- return 0;
- }
- func_exit();
- return port->xmit_cnt;
-}
-
-static int sx_tiocmget(struct tty_struct *tty)
-{
- struct specialix_port *port = tty->driver_data;
- struct specialix_board *bp;
- unsigned char status;
- unsigned int result;
- unsigned long flags;
-
- func_enter();
-
- if (sx_paranoia_check(port, tty->name, __func__)) {
- func_exit();
- return -ENODEV;
- }
-
- bp = port_Board(port);
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_CAR, port_No(port));
- status = sx_in(bp, CD186x_MSVR);
- spin_unlock_irqrestore(&bp->lock, flags);
- dprintk(SX_DEBUG_INIT, "Got msvr[%d] = %02x, car = %d.\n",
- port_No(port), status, sx_in(bp, CD186x_CAR));
- dprintk(SX_DEBUG_INIT, "sx_port = %p, port = %p\n", sx_port, port);
- if (sx_crtscts(port->port.tty)) {
- result = TIOCM_DTR | TIOCM_DSR
- | ((status & MSVR_DTR) ? TIOCM_RTS : 0)
- | ((status & MSVR_CD) ? TIOCM_CAR : 0)
- | ((status & MSVR_CTS) ? TIOCM_CTS : 0);
- } else {
- result = TIOCM_RTS | TIOCM_DSR
- | ((status & MSVR_DTR) ? TIOCM_DTR : 0)
- | ((status & MSVR_CD) ? TIOCM_CAR : 0)
- | ((status & MSVR_CTS) ? TIOCM_CTS : 0);
- }
-
- func_exit();
-
- return result;
-}
-
-
-static int sx_tiocmset(struct tty_struct *tty,
- unsigned int set, unsigned int clear)
-{
- struct specialix_port *port = tty->driver_data;
- unsigned long flags;
- struct specialix_board *bp;
-
- func_enter();
-
- if (sx_paranoia_check(port, tty->name, __func__)) {
- func_exit();
- return -ENODEV;
- }
-
- bp = port_Board(port);
-
- spin_lock_irqsave(&port->lock, flags);
- if (sx_crtscts(port->port.tty)) {
- if (set & TIOCM_RTS)
- port->MSVR |= MSVR_DTR;
- } else {
- if (set & TIOCM_DTR)
- port->MSVR |= MSVR_DTR;
- }
- if (sx_crtscts(port->port.tty)) {
- if (clear & TIOCM_RTS)
- port->MSVR &= ~MSVR_DTR;
- } else {
- if (clear & TIOCM_DTR)
- port->MSVR &= ~MSVR_DTR;
- }
- spin_lock(&bp->lock);
- sx_out(bp, CD186x_CAR, port_No(port));
- sx_out(bp, CD186x_MSVR, port->MSVR);
- spin_unlock(&bp->lock);
- spin_unlock_irqrestore(&port->lock, flags);
- func_exit();
- return 0;
-}
-
-
-static int sx_send_break(struct tty_struct *tty, int length)
-{
- struct specialix_port *port = tty->driver_data;
- struct specialix_board *bp = port_Board(port);
- unsigned long flags;
-
- func_enter();
- if (length == 0 || length == -1)
- return -EOPNOTSUPP;
-
- spin_lock_irqsave(&port->lock, flags);
- port->break_length = SPECIALIX_TPS / HZ * length;
- port->COR2 |= COR2_ETC;
- port->IER |= IER_TXRDY;
- spin_lock(&bp->lock);
- sx_out(bp, CD186x_CAR, port_No(port));
- sx_out(bp, CD186x_COR2, port->COR2);
- sx_out(bp, CD186x_IER, port->IER);
- spin_unlock(&bp->lock);
- spin_unlock_irqrestore(&port->lock, flags);
- sx_wait_CCR(bp);
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_CCR, CCR_CORCHG2);
- spin_unlock_irqrestore(&bp->lock, flags);
- sx_wait_CCR(bp);
-
- func_exit();
- return 0;
-}
-
-
-static int sx_set_serial_info(struct specialix_port *port,
- struct serial_struct __user *newinfo)
-{
- struct serial_struct tmp;
- struct specialix_board *bp = port_Board(port);
- int change_speed;
-
- func_enter();
-
- if (copy_from_user(&tmp, newinfo, sizeof(tmp))) {
- func_enter();
- return -EFAULT;
- }
-
- mutex_lock(&port->port.mutex);
- change_speed = ((port->port.flags & ASYNC_SPD_MASK) !=
- (tmp.flags & ASYNC_SPD_MASK));
- change_speed |= (tmp.custom_divisor != port->custom_divisor);
-
- if (!capable(CAP_SYS_ADMIN)) {
- if ((tmp.close_delay != port->port.close_delay) ||
- (tmp.closing_wait != port->port.closing_wait) ||
- ((tmp.flags & ~ASYNC_USR_MASK) !=
- (port->port.flags & ~ASYNC_USR_MASK))) {
- func_exit();
- mutex_unlock(&port->port.mutex);
- return -EPERM;
- }
- port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) |
- (tmp.flags & ASYNC_USR_MASK));
- port->custom_divisor = tmp.custom_divisor;
- } else {
- port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) |
- (tmp.flags & ASYNC_FLAGS));
- port->port.close_delay = tmp.close_delay;
- port->port.closing_wait = tmp.closing_wait;
- port->custom_divisor = tmp.custom_divisor;
- }
- if (change_speed)
- sx_change_speed(bp, port);
-
- func_exit();
- mutex_unlock(&port->port.mutex);
- return 0;
-}
-
-
-static int sx_get_serial_info(struct specialix_port *port,
- struct serial_struct __user *retinfo)
-{
- struct serial_struct tmp;
- struct specialix_board *bp = port_Board(port);
-
- func_enter();
-
- memset(&tmp, 0, sizeof(tmp));
- mutex_lock(&port->port.mutex);
- tmp.type = PORT_CIRRUS;
- tmp.line = port - sx_port;
- tmp.port = bp->base;
- tmp.irq = bp->irq;
- tmp.flags = port->port.flags;
- tmp.baud_base = (SX_OSCFREQ + CD186x_TPC/2) / CD186x_TPC;
- tmp.close_delay = port->port.close_delay * HZ/100;
- tmp.closing_wait = port->port.closing_wait * HZ/100;
- tmp.custom_divisor = port->custom_divisor;
- tmp.xmit_fifo_size = CD186x_NFIFO;
- mutex_unlock(&port->port.mutex);
- if (copy_to_user(retinfo, &tmp, sizeof(tmp))) {
- func_exit();
- return -EFAULT;
- }
-
- func_exit();
- return 0;
-}
-
-
-static int sx_ioctl(struct tty_struct *tty,
- unsigned int cmd, unsigned long arg)
-{
- struct specialix_port *port = tty->driver_data;
- void __user *argp = (void __user *)arg;
-
- func_enter();
-
- if (sx_paranoia_check(port, tty->name, "sx_ioctl")) {
- func_exit();
- return -ENODEV;
- }
-
- switch (cmd) {
- case TIOCGSERIAL:
- func_exit();
- return sx_get_serial_info(port, argp);
- case TIOCSSERIAL:
- func_exit();
- return sx_set_serial_info(port, argp);
- default:
- func_exit();
- return -ENOIOCTLCMD;
- }
- func_exit();
- return 0;
-}
-
-
-static void sx_throttle(struct tty_struct *tty)
-{
- struct specialix_port *port = tty->driver_data;
- struct specialix_board *bp;
- unsigned long flags;
-
- func_enter();
-
- if (sx_paranoia_check(port, tty->name, "sx_throttle")) {
- func_exit();
- return;
- }
-
- bp = port_Board(port);
-
- /* Use DTR instead of RTS ! */
- if (sx_crtscts(tty))
- port->MSVR &= ~MSVR_DTR;
- else {
- /* Auch!!! I think the system shouldn't call this then. */
- /* Or maybe we're supposed (allowed?) to do our side of hw
- handshake anyway, even when hardware handshake is off.
- When you see this in your logs, please report.... */
- printk(KERN_ERR
- "sx%d: Need to throttle, but can't (hardware hs is off)\n",
- port_No(port));
- }
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_CAR, port_No(port));
- spin_unlock_irqrestore(&bp->lock, flags);
- if (I_IXOFF(tty)) {
- sx_wait_CCR(bp);
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_CCR, CCR_SSCH2);
- spin_unlock_irqrestore(&bp->lock, flags);
- sx_wait_CCR(bp);
- }
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_MSVR, port->MSVR);
- spin_unlock_irqrestore(&bp->lock, flags);
-
- func_exit();
-}
-
-
-static void sx_unthrottle(struct tty_struct *tty)
-{
- struct specialix_port *port = tty->driver_data;
- struct specialix_board *bp;
- unsigned long flags;
-
- func_enter();
-
- if (sx_paranoia_check(port, tty->name, "sx_unthrottle")) {
- func_exit();
- return;
- }
-
- bp = port_Board(port);
-
- spin_lock_irqsave(&port->lock, flags);
- /* XXXX Use DTR INSTEAD???? */
- if (sx_crtscts(tty))
- port->MSVR |= MSVR_DTR;
- /* Else clause: see remark in "sx_throttle"... */
- spin_lock(&bp->lock);
- sx_out(bp, CD186x_CAR, port_No(port));
- spin_unlock(&bp->lock);
- if (I_IXOFF(tty)) {
- spin_unlock_irqrestore(&port->lock, flags);
- sx_wait_CCR(bp);
- spin_lock_irqsave(&bp->lock, flags);
- sx_out(bp, CD186x_CCR, CCR_SSCH1);
- spin_unlock_irqrestore(&bp->lock, flags);
- sx_wait_CCR(bp);
- spin_lock_irqsave(&port->lock, flags);
- }
- spin_lock(&bp->lock);
- sx_out(bp, CD186x_MSVR, port->MSVR);
- spin_unlock(&bp->lock);
- spin_unlock_irqrestore(&port->lock, flags);
-
- func_exit();
-}
-
-
-static void sx_stop(struct tty_struct *tty)
-{
- struct specialix_port *port = tty->driver_data;
- struct specialix_board *bp;
- unsigned long flags;
-
- func_enter();
-
- if (sx_paranoia_check(port, tty->name, "sx_stop")) {
- func_exit();
- return;
- }
-
- bp = port_Board(port);
-
- spin_lock_irqsave(&port->lock, flags);
- port->IER &= ~IER_TXRDY;
- spin_lock(&bp->lock);
- sx_out(bp, CD186x_CAR, port_No(port));
- sx_out(bp, CD186x_IER, port->IER);
- spin_unlock(&bp->lock);
- spin_unlock_irqrestore(&port->lock, flags);
-
- func_exit();
-}
-
-
-static void sx_start(struct tty_struct *tty)
-{
- struct specialix_port *port = tty->driver_data;
- struct specialix_board *bp;
- unsigned long flags;
-
- func_enter();
-
- if (sx_paranoia_check(port, tty->name, "sx_start")) {
- func_exit();
- return;
- }
-
- bp = port_Board(port);
-
- spin_lock_irqsave(&port->lock, flags);
- if (port->xmit_cnt && port->xmit_buf && !(port->IER & IER_TXRDY)) {
- port->IER |= IER_TXRDY;
- spin_lock(&bp->lock);
- sx_out(bp, CD186x_CAR, port_No(port));
- sx_out(bp, CD186x_IER, port->IER);
- spin_unlock(&bp->lock);
- }
- spin_unlock_irqrestore(&port->lock, flags);
-
- func_exit();
-}
-
-static void sx_hangup(struct tty_struct *tty)
-{
- struct specialix_port *port = tty->driver_data;
- struct specialix_board *bp;
- unsigned long flags;
-
- func_enter();
-
- if (sx_paranoia_check(port, tty->name, "sx_hangup")) {
- func_exit();
- return;
- }
-
- bp = port_Board(port);
-
- sx_shutdown_port(bp, port);
- spin_lock_irqsave(&port->lock, flags);
- bp->count -= port->port.count;
- if (bp->count < 0) {
- printk(KERN_ERR
- "sx%d: sx_hangup: bad board count: %d port: %d\n",
- board_No(bp), bp->count, tty->index);
- bp->count = 0;
- }
- port->port.count = 0;
- port->port.flags &= ~ASYNC_NORMAL_ACTIVE;
- port->port.tty = NULL;
- spin_unlock_irqrestore(&port->lock, flags);
- wake_up_interruptible(&port->port.open_wait);
-
- func_exit();
-}
-
-
-static void sx_set_termios(struct tty_struct *tty,
- struct ktermios *old_termios)
-{
- struct specialix_port *port = tty->driver_data;
- unsigned long flags;
- struct specialix_board *bp;
-
- if (sx_paranoia_check(port, tty->name, "sx_set_termios"))
- return;
-
- bp = port_Board(port);
- spin_lock_irqsave(&port->lock, flags);
- sx_change_speed(port_Board(port), port);
- spin_unlock_irqrestore(&port->lock, flags);
-
- if ((old_termios->c_cflag & CRTSCTS) &&
- !(tty->termios->c_cflag & CRTSCTS)) {
- tty->hw_stopped = 0;
- sx_start(tty);
- }
-}
-
-static const struct tty_operations sx_ops = {
- .open = sx_open,
- .close = sx_close,
- .write = sx_write,
- .put_char = sx_put_char,
- .flush_chars = sx_flush_chars,
- .write_room = sx_write_room,
- .chars_in_buffer = sx_chars_in_buffer,
- .flush_buffer = sx_flush_buffer,
- .ioctl = sx_ioctl,
- .throttle = sx_throttle,
- .unthrottle = sx_unthrottle,
- .set_termios = sx_set_termios,
- .stop = sx_stop,
- .start = sx_start,
- .hangup = sx_hangup,
- .tiocmget = sx_tiocmget,
- .tiocmset = sx_tiocmset,
- .break_ctl = sx_send_break,
-};
-
-static int sx_init_drivers(void)
-{
- int error;
- int i;
-
- func_enter();
-
- specialix_driver = alloc_tty_driver(SX_NBOARD * SX_NPORT);
- if (!specialix_driver) {
- printk(KERN_ERR "sx: Couldn't allocate tty_driver.\n");
- func_exit();
- return 1;
- }
-
- specialix_driver->owner = THIS_MODULE;
- specialix_driver->name = "ttyW";
- specialix_driver->major = SPECIALIX_NORMAL_MAJOR;
- specialix_driver->type = TTY_DRIVER_TYPE_SERIAL;
- specialix_driver->subtype = SERIAL_TYPE_NORMAL;
- specialix_driver->init_termios = tty_std_termios;
- specialix_driver->init_termios.c_cflag =
- B9600 | CS8 | CREAD | HUPCL | CLOCAL;
- specialix_driver->init_termios.c_ispeed = 9600;
- specialix_driver->init_termios.c_ospeed = 9600;
- specialix_driver->flags = TTY_DRIVER_REAL_RAW |
- TTY_DRIVER_HARDWARE_BREAK;
- tty_set_operations(specialix_driver, &sx_ops);
-
- error = tty_register_driver(specialix_driver);
- if (error) {
- put_tty_driver(specialix_driver);
- printk(KERN_ERR
- "sx: Couldn't register specialix IO8+ driver, error = %d\n",
- error);
- func_exit();
- return 1;
- }
- memset(sx_port, 0, sizeof(sx_port));
- for (i = 0; i < SX_NPORT * SX_NBOARD; i++) {
- sx_port[i].magic = SPECIALIX_MAGIC;
- tty_port_init(&sx_port[i].port);
- spin_lock_init(&sx_port[i].lock);
- }
-
- func_exit();
- return 0;
-}
-
-static void sx_release_drivers(void)
-{
- func_enter();
-
- tty_unregister_driver(specialix_driver);
- put_tty_driver(specialix_driver);
- func_exit();
-}
-
-/*
- * This routine must be called by kernel at boot time
- */
-static int __init specialix_init(void)
-{
- int i;
- int found = 0;
-
- func_enter();
-
- printk(KERN_INFO "sx: Specialix IO8+ driver v" VERSION ", (c) R.E.Wolff 1997/1998.\n");
- printk(KERN_INFO "sx: derived from work (c) D.Gorodchanin 1994-1996.\n");
- if (sx_rtscts)
- printk(KERN_INFO
- "sx: DTR/RTS pin is RTS when CRTSCTS is on.\n");
- else
- printk(KERN_INFO "sx: DTR/RTS pin is always RTS.\n");
-
- for (i = 0; i < SX_NBOARD; i++)
- spin_lock_init(&sx_board[i].lock);
-
- if (sx_init_drivers()) {
- func_exit();
- return -EIO;
- }
-
- for (i = 0; i < SX_NBOARD; i++)
- if (sx_board[i].base && !sx_probe(&sx_board[i]))
- found++;
-
-#ifdef CONFIG_PCI
- {
- struct pci_dev *pdev = NULL;
-
- i = 0;
- while (i < SX_NBOARD) {
- if (sx_board[i].flags & SX_BOARD_PRESENT) {
- i++;
- continue;
- }
- pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX,
- PCI_DEVICE_ID_SPECIALIX_IO8, pdev);
- if (!pdev)
- break;
-
- if (pci_enable_device(pdev))
- continue;
-
- sx_board[i].irq = pdev->irq;
-
- sx_board[i].base = pci_resource_start(pdev, 2);
-
- sx_board[i].flags |= SX_BOARD_IS_PCI;
- if (!sx_probe(&sx_board[i]))
- found++;
- }
- /* May exit pci_get sequence early with lots of boards */
- if (pdev != NULL)
- pci_dev_put(pdev);
- }
-#endif
-
- if (!found) {
- sx_release_drivers();
- printk(KERN_INFO "sx: No specialix IO8+ boards detected.\n");
- func_exit();
- return -EIO;
- }
-
- func_exit();
- return 0;
-}
-
-static int iobase[SX_NBOARD] = {0,};
-static int irq[SX_NBOARD] = {0,};
-
-module_param_array(iobase, int, NULL, 0);
-module_param_array(irq, int, NULL, 0);
-module_param(sx_debug, int, 0);
-module_param(sx_rtscts, int, 0);
-module_param(sx_rxfifo, int, 0);
-
-/*
- * You can setup up to 4 boards.
- * by specifying "iobase=0xXXX,0xXXX ..." as insmod parameter.
- * You should specify the IRQs too in that case "irq=....,...".
- *
- * More than 4 boards in one computer is not possible, as the card can
- * only use 4 different interrupts.
- *
- */
-static int __init specialix_init_module(void)
-{
- int i;
-
- func_enter();
-
- if (iobase[0] || iobase[1] || iobase[2] || iobase[3]) {
- for (i = 0; i < SX_NBOARD; i++) {
- sx_board[i].base = iobase[i];
- sx_board[i].irq = irq[i];
- sx_board[i].count = 0;
- }
- }
-
- func_exit();
-
- return specialix_init();
-}
-
-static void __exit specialix_exit_module(void)
-{
- int i;
-
- func_enter();
-
- sx_release_drivers();
- for (i = 0; i < SX_NBOARD; i++)
- if (sx_board[i].flags & SX_BOARD_PRESENT)
- sx_release_io_range(&sx_board[i]);
- func_exit();
-}
-
-static struct pci_device_id specialx_pci_tbl[] __devinitdata __used = {
- { PCI_DEVICE(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_IO8) },
- { }
-};
-MODULE_DEVICE_TABLE(pci, specialx_pci_tbl);
-
-module_init(specialix_init_module);
-module_exit(specialix_exit_module);
-
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_CHARDEV_MAJOR(SPECIALIX_NORMAL_MAJOR);
git.openpandora.org / pandora-kernel.git / blobdiff