From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- drivers/char/rocket.c | 3299 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 3299 insertions(+) create mode 100644 drivers/char/rocket.c (limited to 'drivers/char/rocket.c') diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c new file mode 100644 index 00000000000..5bcbeb0cb9a --- /dev/null +++ b/drivers/char/rocket.c @@ -0,0 +1,3299 @@ +/* + * RocketPort device driver for Linux + * + * Written by Theodore Ts'o, 1995, 1996, 1997, 1998, 1999, 2000. + * + * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003 by Comtrol, Inc. + * + * 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. + */ + +/* + * Kernel Synchronization: + * + * This driver has 2 kernel control paths - exception handlers (calls into the driver + * from user mode) and the timer bottom half (tasklet). This is a polled driver, interrupts + * are not used. + * + * Critical data: + * - rp_table[], accessed through passed "info" pointers, is a global (static) array of + * serial port state information and the xmit_buf circular buffer. Protected by + * a per port spinlock. + * - xmit_flags[], an array of ints indexed by line (port) number, indicating that there + * is data to be transmitted. Protected by atomic bit operations. + * - rp_num_ports, int indicating number of open ports, protected by atomic operations. + * + * rp_write() and rp_write_char() functions use a per port semaphore to protect against + * simultaneous access to the same port by more than one process. + */ + +/****** Defines ******/ +#ifdef PCI_NUM_RESOURCES +#define PCI_BASE_ADDRESS(dev, r) ((dev)->resource[r].start) +#else +#define PCI_BASE_ADDRESS(dev, r) ((dev)->base_address[r]) +#endif + +#define ROCKET_PARANOIA_CHECK +#define ROCKET_DISABLE_SIMUSAGE + +#undef ROCKET_SOFT_FLOW +#undef ROCKET_DEBUG_OPEN +#undef ROCKET_DEBUG_INTR +#undef ROCKET_DEBUG_WRITE +#undef ROCKET_DEBUG_FLOW +#undef ROCKET_DEBUG_THROTTLE +#undef ROCKET_DEBUG_WAIT_UNTIL_SENT +#undef ROCKET_DEBUG_RECEIVE +#undef ROCKET_DEBUG_HANGUP +#undef REV_PCI_ORDER +#undef ROCKET_DEBUG_IO + +#define POLL_PERIOD HZ/100 /* Polling period .01 seconds (10ms) */ + +/****** Kernel includes ******/ + +#ifdef MODVERSIONS +#include +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/****** RocketPort includes ******/ + +#include "rocket_int.h" +#include "rocket.h" + +#define ROCKET_VERSION "2.09" +#define ROCKET_DATE "12-June-2003" + +/****** RocketPort Local Variables ******/ + +static struct tty_driver *rocket_driver; + +static struct rocket_version driver_version = { + ROCKET_VERSION, ROCKET_DATE +}; + +static struct r_port *rp_table[MAX_RP_PORTS]; /* The main repository of serial port state information. */ +static unsigned int xmit_flags[NUM_BOARDS]; /* Bit significant, indicates port had data to transmit. */ + /* eg. Bit 0 indicates port 0 has xmit data, ... */ +static atomic_t rp_num_ports_open; /* Number of serial ports open */ +static struct timer_list rocket_timer; + +static unsigned long board1; /* ISA addresses, retrieved from rocketport.conf */ +static unsigned long board2; +static unsigned long board3; +static unsigned long board4; +static unsigned long controller; +static int support_low_speed; +static unsigned long modem1; +static unsigned long modem2; +static unsigned long modem3; +static unsigned long modem4; +static unsigned long pc104_1[8]; +static unsigned long pc104_2[8]; +static unsigned long pc104_3[8]; +static unsigned long pc104_4[8]; +static unsigned long *pc104[4] = { pc104_1, pc104_2, pc104_3, pc104_4 }; + +static int rp_baud_base[NUM_BOARDS]; /* Board config info (Someday make a per-board structure) */ +static unsigned long rcktpt_io_addr[NUM_BOARDS]; +static int rcktpt_type[NUM_BOARDS]; +static int is_PCI[NUM_BOARDS]; +static rocketModel_t rocketModel[NUM_BOARDS]; +static int max_board; + +/* + * The following arrays define the interrupt bits corresponding to each AIOP. + * These bits are different between the ISA and regular PCI boards and the + * Universal PCI boards. + */ + +static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = { + AIOP_INTR_BIT_0, + AIOP_INTR_BIT_1, + AIOP_INTR_BIT_2, + AIOP_INTR_BIT_3 +}; + +static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = { + UPCI_AIOP_INTR_BIT_0, + UPCI_AIOP_INTR_BIT_1, + UPCI_AIOP_INTR_BIT_2, + UPCI_AIOP_INTR_BIT_3 +}; + +/* + * Line number is the ttySIx number (x), the Minor number. We + * assign them sequentially, starting at zero. The following + * array keeps track of the line number assigned to a given board/aiop/channel. + */ +static unsigned char lineNumbers[MAX_RP_PORTS]; +static unsigned long nextLineNumber; + +/***** RocketPort Static Prototypes *********/ +static int __init init_ISA(int i); +static void rp_wait_until_sent(struct tty_struct *tty, int timeout); +static void rp_flush_buffer(struct tty_struct *tty); +static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model); +static unsigned char GetLineNumber(int ctrl, int aiop, int ch); +static unsigned char SetLineNumber(int ctrl, int aiop, int ch); +static void rp_start(struct tty_struct *tty); + +#ifdef MODULE +MODULE_AUTHOR("Theodore Ts'o"); +MODULE_DESCRIPTION("Comtrol RocketPort driver"); +module_param(board1, ulong, 0); +MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1"); +module_param(board2, ulong, 0); +MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2"); +module_param(board3, ulong, 0); +MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3"); +module_param(board4, ulong, 0); +MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4"); +module_param(controller, ulong, 0); +MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller"); +module_param(support_low_speed, bool, 0); +MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud"); +module_param(modem1, ulong, 0); +MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem"); +module_param(modem2, ulong, 0); +MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem"); +module_param(modem3, ulong, 0); +MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem"); +module_param(modem4, ulong, 0); +MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem"); +module_param_array(pc104_1, ulong, NULL, 0); +MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,..."); +module_param_array(pc104_2, ulong, NULL, 0); +MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,..."); +module_param_array(pc104_3, ulong, NULL, 0); +MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,..."); +module_param_array(pc104_4, ulong, NULL, 0); +MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,..."); + +int rp_init(void); +static void rp_cleanup_module(void); + +module_init(rp_init); +module_exit(rp_cleanup_module); + +#endif + +#ifdef MODULE_LICENSE +MODULE_LICENSE("Dual BSD/GPL"); +#endif + +/*************************************************************************/ +/* Module code starts here */ + +static inline int rocket_paranoia_check(struct r_port *info, + const char *routine) +{ +#ifdef ROCKET_PARANOIA_CHECK + if (!info) + return 1; + if (info->magic != RPORT_MAGIC) { + printk(KERN_INFO "Warning: bad magic number for rocketport struct in %s\n", + routine); + return 1; + } +#endif + return 0; +} + + +/* Serial port receive data function. Called (from timer poll) when an AIOPIC signals + * that receive data is present on a serial port. Pulls data from FIFO, moves it into the + * tty layer. + */ +static void rp_do_receive(struct r_port *info, + struct tty_struct *tty, + CHANNEL_t * cp, unsigned int ChanStatus) +{ + unsigned int CharNStat; + int ToRecv, wRecv, space = 0, count; + unsigned char *cbuf; + char *fbuf; + struct tty_ldisc *ld; + + ld = tty_ldisc_ref(tty); + + ToRecv = sGetRxCnt(cp); + if (ld) + space = ld->receive_room(tty); + if (space > 2 * TTY_FLIPBUF_SIZE) + space = 2 * TTY_FLIPBUF_SIZE; + cbuf = tty->flip.char_buf; + fbuf = tty->flip.flag_buf; + count = 0; +#ifdef ROCKET_DEBUG_INTR + printk(KERN_INFO "rp_do_receive(%d, %d)...", ToRecv, space); +#endif + + /* + * determine how many we can actually read in. If we can't + * read any in then we have a software overrun condition. + */ + if (ToRecv > space) + ToRecv = space; + + if (ToRecv <= 0) + return; + + /* + * if status indicates there are errored characters in the + * FIFO, then enter status mode (a word in FIFO holds + * character and status). + */ + if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) { + if (!(ChanStatus & STATMODE)) { +#ifdef ROCKET_DEBUG_RECEIVE + printk(KERN_INFO "Entering STATMODE..."); +#endif + ChanStatus |= STATMODE; + sEnRxStatusMode(cp); + } + } + + /* + * if we previously entered status mode, then read down the + * FIFO one word at a time, pulling apart the character and + * the status. Update error counters depending on status + */ + if (ChanStatus & STATMODE) { +#ifdef ROCKET_DEBUG_RECEIVE + printk(KERN_INFO "Ignore %x, read %x...", info->ignore_status_mask, + info->read_status_mask); +#endif + while (ToRecv) { + CharNStat = sInW(sGetTxRxDataIO(cp)); +#ifdef ROCKET_DEBUG_RECEIVE + printk(KERN_INFO "%x...", CharNStat); +#endif + if (CharNStat & STMBREAKH) + CharNStat &= ~(STMFRAMEH | STMPARITYH); + if (CharNStat & info->ignore_status_mask) { + ToRecv--; + continue; + } + CharNStat &= info->read_status_mask; + if (CharNStat & STMBREAKH) + *fbuf++ = TTY_BREAK; + else if (CharNStat & STMPARITYH) + *fbuf++ = TTY_PARITY; + else if (CharNStat & STMFRAMEH) + *fbuf++ = TTY_FRAME; + else if (CharNStat & STMRCVROVRH) + *fbuf++ = TTY_OVERRUN; + else + *fbuf++ = 0; + *cbuf++ = CharNStat & 0xff; + count++; + ToRecv--; + } + + /* + * after we've emptied the FIFO in status mode, turn + * status mode back off + */ + if (sGetRxCnt(cp) == 0) { +#ifdef ROCKET_DEBUG_RECEIVE + printk(KERN_INFO "Status mode off.\n"); +#endif + sDisRxStatusMode(cp); + } + } else { + /* + * we aren't in status mode, so read down the FIFO two + * characters at time by doing repeated word IO + * transfer. + */ + wRecv = ToRecv >> 1; + if (wRecv) + sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv); + if (ToRecv & 1) + cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp)); + memset(fbuf, 0, ToRecv); + cbuf += ToRecv; + fbuf += ToRecv; + count += ToRecv; + } + /* Push the data up to the tty layer */ + ld->receive_buf(tty, tty->flip.char_buf, tty->flip.flag_buf, count); + tty_ldisc_deref(ld); +} + +/* + * Serial port transmit data function. Called from the timer polling loop as a + * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready + * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is + * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks. + */ +static void rp_do_transmit(struct r_port *info) +{ + int c; + CHANNEL_t *cp = &info->channel; + struct tty_struct *tty; + unsigned long flags; + +#ifdef ROCKET_DEBUG_INTR + printk(KERN_INFO "rp_do_transmit "); +#endif + if (!info) + return; + if (!info->tty) { + printk(KERN_INFO "rp: WARNING rp_do_transmit called with info->tty==NULL\n"); + clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); + return; + } + + spin_lock_irqsave(&info->slock, flags); + tty = info->tty; + info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); + + /* Loop sending data to FIFO until done or FIFO full */ + while (1) { + if (tty->stopped || tty->hw_stopped) + break; + c = min(info->xmit_fifo_room, min(info->xmit_cnt, XMIT_BUF_SIZE - info->xmit_tail)); + if (c <= 0 || info->xmit_fifo_room <= 0) + break; + sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2); + if (c & 1) + sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]); + info->xmit_tail += c; + info->xmit_tail &= XMIT_BUF_SIZE - 1; + info->xmit_cnt -= c; + info->xmit_fifo_room -= c; +#ifdef ROCKET_DEBUG_INTR + printk(KERN_INFO "tx %d chars...", c); +#endif + } + + if (info->xmit_cnt == 0) + clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); + + if (info->xmit_cnt < WAKEUP_CHARS) { + tty_wakeup(tty); + wake_up_interruptible(&tty->write_wait); +#ifdef ROCKETPORT_HAVE_POLL_WAIT + wake_up_interruptible(&tty->poll_wait); +#endif + } + + spin_unlock_irqrestore(&info->slock, flags); + +#ifdef ROCKET_DEBUG_INTR + printk(KERN_INFO "(%d,%d,%d,%d)...", info->xmit_cnt, info->xmit_head, + info->xmit_tail, info->xmit_fifo_room); +#endif +} + +/* + * Called when a serial port signals it has read data in it's RX FIFO. + * It checks what interrupts are pending and services them, including + * receiving serial data. + */ +static void rp_handle_port(struct r_port *info) +{ + CHANNEL_t *cp; + struct tty_struct *tty; + unsigned int IntMask, ChanStatus; + + if (!info) + return; + + if ((info->flags & ROCKET_INITIALIZED) == 0) { + printk(KERN_INFO "rp: WARNING: rp_handle_port called with info->flags & NOT_INIT\n"); + return; + } + if (!info->tty) { + printk(KERN_INFO "rp: WARNING: rp_handle_port called with info->tty==NULL\n"); + return; + } + cp = &info->channel; + tty = info->tty; + + IntMask = sGetChanIntID(cp) & info->intmask; +#ifdef ROCKET_DEBUG_INTR + printk(KERN_INFO "rp_interrupt %02x...", IntMask); +#endif + ChanStatus = sGetChanStatus(cp); + if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */ + rp_do_receive(info, tty, cp, ChanStatus); + } + if (IntMask & DELTA_CD) { /* CD change */ +#if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP)) + printk(KERN_INFO "ttyR%d CD now %s...", info->line, + (ChanStatus & CD_ACT) ? "on" : "off"); +#endif + if (!(ChanStatus & CD_ACT) && info->cd_status) { +#ifdef ROCKET_DEBUG_HANGUP + printk(KERN_INFO "CD drop, calling hangup.\n"); +#endif + tty_hangup(tty); + } + info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0; + wake_up_interruptible(&info->open_wait); + } +#ifdef ROCKET_DEBUG_INTR + if (IntMask & DELTA_CTS) { /* CTS change */ + printk(KERN_INFO "CTS change...\n"); + } + if (IntMask & DELTA_DSR) { /* DSR change */ + printk(KERN_INFO "DSR change...\n"); + } +#endif +} + +/* + * The top level polling routine. Repeats every 1/100 HZ (10ms). + */ +static void rp_do_poll(unsigned long dummy) +{ + CONTROLLER_t *ctlp; + int ctrl, aiop, ch, line, i; + unsigned int xmitmask; + unsigned int CtlMask; + unsigned char AiopMask; + Word_t bit; + + /* Walk through all the boards (ctrl's) */ + for (ctrl = 0; ctrl < max_board; ctrl++) { + if (rcktpt_io_addr[ctrl] <= 0) + continue; + + /* Get a ptr to the board's control struct */ + ctlp = sCtlNumToCtlPtr(ctrl); + + /* Get the interupt status from the board */ +#ifdef CONFIG_PCI + if (ctlp->BusType == isPCI) + CtlMask = sPCIGetControllerIntStatus(ctlp); + else +#endif + CtlMask = sGetControllerIntStatus(ctlp); + + /* Check if any AIOP read bits are set */ + for (aiop = 0; CtlMask; aiop++) { + bit = ctlp->AiopIntrBits[aiop]; + if (CtlMask & bit) { + CtlMask &= ~bit; + AiopMask = sGetAiopIntStatus(ctlp, aiop); + + /* Check if any port read bits are set */ + for (ch = 0; AiopMask; AiopMask >>= 1, ch++) { + if (AiopMask & 1) { + + /* Get the line number (/dev/ttyRx number). */ + /* Read the data from the port. */ + line = GetLineNumber(ctrl, aiop, ch); + rp_handle_port(rp_table[line]); + } + } + } + } + + xmitmask = xmit_flags[ctrl]; + + /* + * xmit_flags contains bit-significant flags, indicating there is data + * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port + * 1, ... (32 total possible). The variable i has the aiop and ch + * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc). + */ + if (xmitmask) { + for (i = 0; i < rocketModel[ctrl].numPorts; i++) { + if (xmitmask & (1 << i)) { + aiop = (i & 0x18) >> 3; + ch = i & 0x07; + line = GetLineNumber(ctrl, aiop, ch); + rp_do_transmit(rp_table[line]); + } + } + } + } + + /* + * Reset the timer so we get called at the next clock tick (10ms). + */ + if (atomic_read(&rp_num_ports_open)) + mod_timer(&rocket_timer, jiffies + POLL_PERIOD); +} + +/* + * Initializes the r_port structure for a port, as well as enabling the port on + * the board. + * Inputs: board, aiop, chan numbers + */ +static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev) +{ + unsigned rocketMode; + struct r_port *info; + int line; + CONTROLLER_T *ctlp; + + /* Get the next available line number */ + line = SetLineNumber(board, aiop, chan); + + ctlp = sCtlNumToCtlPtr(board); + + /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */ + info = kmalloc(sizeof (struct r_port), GFP_KERNEL); + if (!info) { + printk(KERN_INFO "Couldn't allocate info struct for line #%d\n", line); + return; + } + memset(info, 0, sizeof (struct r_port)); + + info->magic = RPORT_MAGIC; + info->line = line; + info->ctlp = ctlp; + info->board = board; + info->aiop = aiop; + info->chan = chan; + info->closing_wait = 3000; + info->close_delay = 50; + init_waitqueue_head(&info->open_wait); + init_waitqueue_head(&info->close_wait); + info->flags &= ~ROCKET_MODE_MASK; + switch (pc104[board][line]) { + case 422: + info->flags |= ROCKET_MODE_RS422; + break; + case 485: + info->flags |= ROCKET_MODE_RS485; + break; + case 232: + default: + info->flags |= ROCKET_MODE_RS232; + break; + } + + info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR; + if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) { + printk(KERN_INFO "RocketPort sInitChan(%d, %d, %d) failed!\n", board, aiop, chan); + kfree(info); + return; + } + + rocketMode = info->flags & ROCKET_MODE_MASK; + + if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485)) + sEnRTSToggle(&info->channel); + else + sDisRTSToggle(&info->channel); + + if (ctlp->boardType == ROCKET_TYPE_PC104) { + switch (rocketMode) { + case ROCKET_MODE_RS485: + sSetInterfaceMode(&info->channel, InterfaceModeRS485); + break; + case ROCKET_MODE_RS422: + sSetInterfaceMode(&info->channel, InterfaceModeRS422); + break; + case ROCKET_MODE_RS232: + default: + if (info->flags & ROCKET_RTS_TOGGLE) + sSetInterfaceMode(&info->channel, InterfaceModeRS232T); + else + sSetInterfaceMode(&info->channel, InterfaceModeRS232); + break; + } + } + spin_lock_init(&info->slock); + sema_init(&info->write_sem, 1); + rp_table[line] = info; + if (pci_dev) + tty_register_device(rocket_driver, line, &pci_dev->dev); +} + +/* + * Configures a rocketport port according to its termio settings. Called from + * user mode into the driver (exception handler). *info CD manipulation is spinlock protected. + */ +static void configure_r_port(struct r_port *info, + struct termios *old_termios) +{ + unsigned cflag; + unsigned long flags; + unsigned rocketMode; + int bits, baud, divisor; + CHANNEL_t *cp; + + if (!info->tty || !info->tty->termios) + return; + cp = &info->channel; + cflag = info->tty->termios->c_cflag; + + /* Byte size and parity */ + if ((cflag & CSIZE) == CS8) { + sSetData8(cp); + bits = 10; + } else { + sSetData7(cp); + bits = 9; + } + if (cflag & CSTOPB) { + sSetStop2(cp); + bits++; + } else { + sSetStop1(cp); + } + + if (cflag & PARENB) { + sEnParity(cp); + bits++; + if (cflag & PARODD) { + sSetOddParity(cp); + } else { + sSetEvenParity(cp); + } + } else { + sDisParity(cp); + } + + /* baud rate */ + baud = tty_get_baud_rate(info->tty); + if (!baud) + baud = 9600; + divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1; + if ((divisor >= 8192 || divisor < 0) && old_termios) { + info->tty->termios->c_cflag &= ~CBAUD; + info->tty->termios->c_cflag |= + (old_termios->c_cflag & CBAUD); + baud = tty_get_baud_rate(info->tty); + if (!baud) + baud = 9600; + divisor = (rp_baud_base[info->board] / baud) - 1; + } + if (divisor >= 8192 || divisor < 0) { + baud = 9600; + divisor = (rp_baud_base[info->board] / baud) - 1; + } + info->cps = baud / bits; + sSetBaud(cp, divisor); + + if (cflag & CRTSCTS) { + info->intmask |= DELTA_CTS; + sEnCTSFlowCtl(cp); + } else { + info->intmask &= ~DELTA_CTS; + sDisCTSFlowCtl(cp); + } + if (cflag & CLOCAL) { + info->intmask &= ~DELTA_CD; + } else { + spin_lock_irqsave(&info->slock, flags); + if (sGetChanStatus(cp) & CD_ACT) + info->cd_status = 1; + else + info->cd_status = 0; + info->intmask |= DELTA_CD; + spin_unlock_irqrestore(&info->slock, flags); + } + + /* + * Handle software flow control in the board + */ +#ifdef ROCKET_SOFT_FLOW + if (I_IXON(info->tty)) { + sEnTxSoftFlowCtl(cp); + if (I_IXANY(info->tty)) { + sEnIXANY(cp); + } else { + sDisIXANY(cp); + } + sSetTxXONChar(cp, START_CHAR(info->tty)); + sSetTxXOFFChar(cp, STOP_CHAR(info->tty)); + } else { + sDisTxSoftFlowCtl(cp); + sDisIXANY(cp); + sClrTxXOFF(cp); + } +#endif + + /* + * Set up ignore/read mask words + */ + info->read_status_mask = STMRCVROVRH | 0xFF; + if (I_INPCK(info->tty)) + info->read_status_mask |= STMFRAMEH | STMPARITYH; + if (I_BRKINT(info->tty) || I_PARMRK(info->tty)) + info->read_status_mask |= STMBREAKH; + + /* + * Characters to ignore + */ + info->ignore_status_mask = 0; + if (I_IGNPAR(info->tty)) + info->ignore_status_mask |= STMFRAMEH | STMPARITYH; + if (I_IGNBRK(info->tty)) { + info->ignore_status_mask |= STMBREAKH; + /* + * If we're ignoring parity and break indicators, + * ignore overruns too. (For real raw support). + */ + if (I_IGNPAR(info->tty)) + info->ignore_status_mask |= STMRCVROVRH; + } + + rocketMode = info->flags & ROCKET_MODE_MASK; + + if ((info->flags & ROCKET_RTS_TOGGLE) + || (rocketMode == ROCKET_MODE_RS485)) + sEnRTSToggle(cp); + else + sDisRTSToggle(cp); + + sSetRTS(&info->channel); + + if (cp->CtlP->boardType == ROCKET_TYPE_PC104) { + switch (rocketMode) { + case ROCKET_MODE_RS485: + sSetInterfaceMode(cp, InterfaceModeRS485); + break; + case ROCKET_MODE_RS422: + sSetInterfaceMode(cp, InterfaceModeRS422); + break; + case ROCKET_MODE_RS232: + default: + if (info->flags & ROCKET_RTS_TOGGLE) + sSetInterfaceMode(cp, InterfaceModeRS232T); + else + sSetInterfaceMode(cp, InterfaceModeRS232); + break; + } + } +} + +/* info->count is considered critical, protected by spinlocks. */ +static int block_til_ready(struct tty_struct *tty, struct file *filp, + struct r_port *info) +{ + DECLARE_WAITQUEUE(wait, current); + int retval; + int do_clocal = 0, extra_count = 0; + unsigned long flags; + + /* + * 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)) + return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS); + if (info->flags & ROCKET_CLOSING) { + interruptible_sleep_on(&info->close_wait); + return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -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))) { + info->flags |= ROCKET_NORMAL_ACTIVE; + return 0; + } + if (tty->termios->c_cflag & CLOCAL) + do_clocal = 1; + + /* + * Block waiting for the carrier detect and the line to become free. While we are in + * this loop, info->count is dropped by one, so that rp_close() knows when to free things. + * We restore it upon exit, either normal or abnormal. + */ + retval = 0; + add_wait_queue(&info->open_wait, &wait); +#ifdef ROCKET_DEBUG_OPEN + printk(KERN_INFO "block_til_ready before block: ttyR%d, count = %d\n", info->line, info->count); +#endif + spin_lock_irqsave(&info->slock, flags); + +#ifdef ROCKET_DISABLE_SIMUSAGE + info->flags |= ROCKET_NORMAL_ACTIVE; +#else + if (!tty_hung_up_p(filp)) { + extra_count = 1; + info->count--; + } +#endif + info->blocked_open++; + + spin_unlock_irqrestore(&info->slock, flags); + + while (1) { + if (tty->termios->c_cflag & CBAUD) { + sSetDTR(&info->channel); + sSetRTS(&info->channel); + } + set_current_state(TASK_INTERRUPTIBLE); + if (tty_hung_up_p(filp) || !(info->flags & ROCKET_INITIALIZED)) { + if (info->flags & ROCKET_HUP_NOTIFY) + retval = -EAGAIN; + else + retval = -ERESTARTSYS; + break; + } + if (!(info->flags & ROCKET_CLOSING) && (do_clocal || (sGetChanStatusLo(&info->channel) & CD_ACT))) + break; + if (signal_pending(current)) { + retval = -ERESTARTSYS; + break; + } +#ifdef ROCKET_DEBUG_OPEN + printk(KERN_INFO "block_til_ready blocking: ttyR%d, count = %d, flags=0x%0x\n", + info->line, info->count, info->flags); +#endif + schedule(); /* Don't hold spinlock here, will hang PC */ + } + current->state = TASK_RUNNING; + remove_wait_queue(&info->open_wait, &wait); + + spin_lock_irqsave(&info->slock, flags); + + if (extra_count) + info->count++; + info->blocked_open--; + + spin_unlock_irqrestore(&info->slock, flags); + +#ifdef ROCKET_DEBUG_OPEN + printk(KERN_INFO "block_til_ready after blocking: ttyR%d, count = %d\n", + info->line, info->count); +#endif + if (retval) + return retval; + info->flags |= ROCKET_NORMAL_ACTIVE; + return 0; +} + +/* + * Exception handler that opens a serial port. Creates xmit_buf storage, fills in + * port's r_port struct. Initializes the port hardware. + */ +static int rp_open(struct tty_struct *tty, struct file *filp) +{ + struct r_port *info; + int line = 0, retval; + CHANNEL_t *cp; + unsigned long page; + + line = TTY_GET_LINE(tty); + if ((line < 0) || (line >= MAX_RP_PORTS) || ((info = rp_table[line]) == NULL)) + return -ENXIO; + + page = __get_free_page(GFP_KERNEL); + if (!page) + return -ENOMEM; + + if (info->flags & ROCKET_CLOSING) { + interruptible_sleep_on(&info->close_wait); + free_page(page); + return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS); + } + + /* + * We must not sleep from here until the port is marked fully in use. + */ + if (info->xmit_buf) + free_page(page); + else + info->xmit_buf = (unsigned char *) page; + + tty->driver_data = info; + info->tty = tty; + + if (info->count++ == 0) { + atomic_inc(&rp_num_ports_open); + +#ifdef ROCKET_DEBUG_OPEN + printk(KERN_INFO "rocket mod++ = %d...", atomic_read(&rp_num_ports_open)); +#endif + } +#ifdef ROCKET_DEBUG_OPEN + printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->count); +#endif + + /* + * Info->count is now 1; so it's safe to sleep now. + */ + info->session = current->signal->session; + info->pgrp = process_group(current); + + if ((info->flags & ROCKET_INITIALIZED) == 0) { + cp = &info->channel; + sSetRxTrigger(cp, TRIG_1); + if (sGetChanStatus(cp) & CD_ACT) + info->cd_status = 1; + else + info->cd_status = 0; + sDisRxStatusMode(cp); + sFlushRxFIFO(cp); + sFlushTxFIFO(cp); + + sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); + sSetRxTrigger(cp, TRIG_1); + + sGetChanStatus(cp); + sDisRxStatusMode(cp); + sClrTxXOFF(cp); + + sDisCTSFlowCtl(cp); + sDisTxSoftFlowCtl(cp); + + sEnRxFIFO(cp); + sEnTransmit(cp); + + info->flags |= ROCKET_INITIALIZED; + + /* + * Set up the tty->alt_speed kludge + */ + if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI) + info->tty->alt_speed = 57600; + if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI) + info->tty->alt_speed = 115200; + if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI) + info->tty->alt_speed = 230400; + if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP) + info->tty->alt_speed = 460800; + + configure_r_port(info, NULL); + if (tty->termios->c_cflag & CBAUD) { + sSetDTR(cp); + sSetRTS(cp); + } + } + /* Starts (or resets) the maint polling loop */ + mod_timer(&rocket_timer, jiffies + POLL_PERIOD); + + retval = block_til_ready(tty, filp, info); + if (retval) { +#ifdef ROCKET_DEBUG_OPEN + printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval); +#endif + return retval; + } + return 0; +} + +/* + * Exception handler that closes a serial port. info->count is considered critical. + */ +static void rp_close(struct tty_struct *tty, struct file *filp) +{ + struct r_port *info = (struct r_port *) tty->driver_data; + unsigned long flags; + int timeout; + CHANNEL_t *cp; + + if (rocket_paranoia_check(info, "rp_close")) + return; + +#ifdef ROCKET_DEBUG_OPEN + printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->count); +#endif + + if (tty_hung_up_p(filp)) + return; + spin_lock_irqsave(&info->slock, flags); + + if ((tty->count == 1) && (info->count != 1)) { + /* + * Uh, oh. tty->count is 1, which means that the tty + * structure will be freed. Info->count should always + * be one in these conditions. If it's greater than + * one, we've got real problems, since it means the + * serial port won't be shutdown. + */ + printk(KERN_INFO "rp_close: bad serial port count; tty->count is 1, " + "info->count is %d\n", info->count); + info->count = 1; + } + if (--info->count < 0) { + printk(KERN_INFO "rp_close: bad serial port count for ttyR%d: %d\n", + info->line, info->count); + info->count = 0; + } + if (info->count) { + spin_unlock_irqrestore(&info->slock, flags); + return; + } + info->flags |= ROCKET_CLOSING; + spin_unlock_irqrestore(&info->slock, flags); + + cp = &info->channel; + + /* + * Notify the line discpline to only process XON/XOFF characters + */ + tty->closing = 1; + + /* + * If transmission was throttled by the application request, + * just flush the xmit buffer. + */ + if (tty->flow_stopped) + rp_flush_buffer(tty); + + /* + * Wait for the transmit buffer to clear + */ + if (info->closing_wait != ROCKET_CLOSING_WAIT_NONE) + tty_wait_until_sent(tty, info->closing_wait); + /* + * Before we drop DTR, make sure the UART transmitter + * has completely drained; this is especially + * important if there is a transmit FIFO! + */ + timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps; + if (timeout == 0) + timeout = 1; + rp_wait_until_sent(tty, timeout); + clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); + + sDisTransmit(cp); + sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); + sDisCTSFlowCtl(cp); + sDisTxSoftFlowCtl(cp); + sClrTxXOFF(cp); + sFlushRxFIFO(cp); + sFlushTxFIFO(cp); + sClrRTS(cp); + if (C_HUPCL(tty)) + sClrDTR(cp); + + if (TTY_DRIVER_FLUSH_BUFFER_EXISTS(tty)) + TTY_DRIVER_FLUSH_BUFFER(tty); + + tty_ldisc_flush(tty); + + clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); + + if (info->blocked_open) { + if (info->close_delay) { + msleep_interruptible(jiffies_to_msecs(info->close_delay)); + } + wake_up_interruptible(&info->open_wait); + } else { + if (info->xmit_buf) { + free_page((unsigned long) info->xmit_buf); + info->xmit_buf = NULL; + } + } + info->flags &= ~(ROCKET_INITIALIZED | ROCKET_CLOSING | ROCKET_NORMAL_ACTIVE); + tty->closing = 0; + wake_up_interruptible(&info->close_wait); + atomic_dec(&rp_num_ports_open); + +#ifdef ROCKET_DEBUG_OPEN + printk(KERN_INFO "rocket mod-- = %d...", atomic_read(&rp_num_ports_open)); + printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line); +#endif + +} + +static void rp_set_termios(struct tty_struct *tty, + struct termios *old_termios) +{ + struct r_port *info = (struct r_port *) tty->driver_data; + CHANNEL_t *cp; + unsigned cflag; + + if (rocket_paranoia_check(info, "rp_set_termios")) + return; + + cflag = tty->termios->c_cflag; + + if (cflag == old_termios->c_cflag) + return; + + /* + * This driver doesn't support CS5 or CS6 + */ + if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6)) + tty->termios->c_cflag = + ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE)); + + configure_r_port(info, old_termios); + + cp = &info->channel; + + /* Handle transition to B0 status */ + if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) { + sClrDTR(cp); + sClrRTS(cp); + } + + /* Handle transition away from B0 status */ + if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) { + if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS)) + sSetRTS(cp); + sSetDTR(cp); + } + + if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) { + tty->hw_stopped = 0; + rp_start(tty); + } +} + +static void rp_break(struct tty_struct *tty, int break_state) +{ + struct r_port *info = (struct r_port *) tty->driver_data; + unsigned long flags; + + if (rocket_paranoia_check(info, "rp_break")) + return; + + spin_lock_irqsave(&info->slock, flags); + if (break_state == -1) + sSendBreak(&info->channel); + else + sClrBreak(&info->channel); + spin_unlock_irqrestore(&info->slock, flags); +} + +/* + * sGetChanRI used to be a macro in rocket_int.h. When the functionality for + * the UPCI boards was added, it was decided to make this a function because + * the macro was getting too complicated. All cases except the first one + * (UPCIRingInd) are taken directly from the original macro. + */ +static int sGetChanRI(CHANNEL_T * ChP) +{ + CONTROLLER_t *CtlP = ChP->CtlP; + int ChanNum = ChP->ChanNum; + int RingInd = 0; + + if (CtlP->UPCIRingInd) + RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]); + else if (CtlP->AltChanRingIndicator) + RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT; + else if (CtlP->boardType == ROCKET_TYPE_PC104) + RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]); + + return RingInd; +} + +/********************************************************************************************/ +/* Here are the routines used by rp_ioctl. These are all called from exception handlers. */ + +/* + * Returns the state of the serial modem control lines. These next 2 functions + * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs. + */ +static int rp_tiocmget(struct tty_struct *tty, struct file *file) +{ + struct r_port *info = (struct r_port *)tty->driver_data; + unsigned int control, result, ChanStatus; + + ChanStatus = sGetChanStatusLo(&info->channel); + control = info->channel.TxControl[3]; + result = ((control & SET_RTS) ? TIOCM_RTS : 0) | + ((control & SET_DTR) ? TIOCM_DTR : 0) | + ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) | + (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) | + ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) | + ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0); + + return result; +} + +/* + * Sets the modem control lines + */ +static int rp_tiocmset(struct tty_struct *tty, struct file *file, + unsigned int set, unsigned int clear) +{ + struct r_port *info = (struct r_port *)tty->driver_data; + + if (set & TIOCM_RTS) + info->channel.TxControl[3] |= SET_RTS; + if (set & TIOCM_DTR) + info->channel.TxControl[3] |= SET_DTR; + if (clear & TIOCM_RTS) + info->channel.TxControl[3] &= ~SET_RTS; + if (clear & TIOCM_DTR) + info->channel.TxControl[3] &= ~SET_DTR; + + sOutDW(info->channel.IndexAddr, *(DWord_t *) & (info->channel.TxControl[0])); + return 0; +} + +static int get_config(struct r_port *info, struct rocket_config __user *retinfo) +{ + struct rocket_config tmp; + + if (!retinfo) + return -EFAULT; + memset(&tmp, 0, sizeof (tmp)); + tmp.line = info->line; + tmp.flags = info->flags; + tmp.close_delay = info->close_delay; + tmp.closing_wait = info->closing_wait; + tmp.port = rcktpt_io_addr[(info->line >> 5) & 3]; + + if (copy_to_user(retinfo, &tmp, sizeof (*retinfo))) + return -EFAULT; + return 0; +} + +static int set_config(struct r_port *info, struct rocket_config __user *new_info) +{ + struct rocket_config new_serial; + + if (copy_from_user(&new_serial, new_info, sizeof (new_serial))) + return -EFAULT; + + if (!capable(CAP_SYS_ADMIN)) + { + if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK)) + return -EPERM; + info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK)); + configure_r_port(info, NULL); + return 0; + } + + info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS)); + info->close_delay = new_serial.close_delay; + info->closing_wait = new_serial.closing_wait; + + if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI) + info->tty->alt_speed = 57600; + if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI) + info->tty->alt_speed = 115200; + if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI) + info->tty->alt_speed = 230400; + if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP) + info->tty->alt_speed = 460800; + + configure_r_port(info, NULL); + return 0; +} + +/* + * This function fills in a rocket_ports struct with information + * about what boards/ports are in the system. This info is passed + * to user space. See setrocket.c where the info is used to create + * the /dev/ttyRx ports. + */ +static int get_ports(struct r_port *info, struct rocket_ports __user *retports) +{ + struct rocket_ports tmp; + int board; + + if (!retports) + return -EFAULT; + memset(&tmp, 0, sizeof (tmp)); + tmp.tty_major = rocket_driver->major; + + for (board = 0; board < 4; board++) { + tmp.rocketModel[board].model = rocketModel[board].model; + strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString); + tmp.rocketModel[board].numPorts = rocketModel[board].numPorts; + tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2; + tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber; + } + if (copy_to_user(retports, &tmp, sizeof (*retports))) + return -EFAULT; + return 0; +} + +static int reset_rm2(struct r_port *info, void __user *arg) +{ + int reset; + + if (copy_from_user(&reset, arg, sizeof (int))) + return -EFAULT; + if (reset) + reset = 1; + + if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII && + rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII) + return -EINVAL; + + if (info->ctlp->BusType == isISA) + sModemReset(info->ctlp, info->chan, reset); + else + sPCIModemReset(info->ctlp, info->chan, reset); + + return 0; +} + +static int get_version(struct r_port *info, struct rocket_version __user *retvers) +{ + if (copy_to_user(retvers, &driver_version, sizeof (*retvers))) + return -EFAULT; + return 0; +} + +/* IOCTL call handler into the driver */ +static int rp_ioctl(struct tty_struct *tty, struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct r_port *info = (struct r_port *) tty->driver_data; + void __user *argp = (void __user *)arg; + + if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl")) + return -ENXIO; + + switch (cmd) { + case RCKP_GET_STRUCT: + if (copy_to_user(argp, info, sizeof (struct r_port))) + return -EFAULT; + return 0; + case RCKP_GET_CONFIG: + return get_config(info, argp); + case RCKP_SET_CONFIG: + return set_config(info, argp); + case RCKP_GET_PORTS: + return get_ports(info, argp); + case RCKP_RESET_RM2: + return reset_rm2(info, argp); + case RCKP_GET_VERSION: + return get_version(info, argp); + default: + return -ENOIOCTLCMD; + } + return 0; +} + +static void rp_send_xchar(struct tty_struct *tty, char ch) +{ + struct r_port *info = (struct r_port *) tty->driver_data; + CHANNEL_t *cp; + + if (rocket_paranoia_check(info, "rp_send_xchar")) + return; + + cp = &info->channel; + if (sGetTxCnt(cp)) + sWriteTxPrioByte(cp, ch); + else + sWriteTxByte(sGetTxRxDataIO(cp), ch); +} + +static void rp_throttle(struct tty_struct *tty) +{ + struct r_port *info = (struct r_port *) tty->driver_data; + CHANNEL_t *cp; + +#ifdef ROCKET_DEBUG_THROTTLE + printk(KERN_INFO "throttle %s: %d....\n", tty->name, + tty->ldisc.chars_in_buffer(tty)); +#endif + + if (rocket_paranoia_check(info, "rp_throttle")) + return; + + cp = &info->channel; + if (I_IXOFF(tty)) + rp_send_xchar(tty, STOP_CHAR(tty)); + + sClrRTS(&info->channel); +} + +static void rp_unthrottle(struct tty_struct *tty) +{ + struct r_port *info = (struct r_port *) tty->driver_data; + CHANNEL_t *cp; +#ifdef ROCKET_DEBUG_THROTTLE + printk(KERN_INFO "unthrottle %s: %d....\n", tty->name, + tty->ldisc.chars_in_buffer(tty)); +#endif + + if (rocket_paranoia_check(info, "rp_throttle")) + return; + + cp = &info->channel; + if (I_IXOFF(tty)) + rp_send_xchar(tty, START_CHAR(tty)); + + sSetRTS(&info->channel); +} + +/* + * ------------------------------------------------------------ + * rp_stop() and rp_start() + * + * This routines are called before setting or resetting tty->stopped. + * They enable or disable transmitter interrupts, as necessary. + * ------------------------------------------------------------ + */ +static void rp_stop(struct tty_struct *tty) +{ + struct r_port *info = (struct r_port *) tty->driver_data; + +#ifdef ROCKET_DEBUG_FLOW + printk(KERN_INFO "stop %s: %d %d....\n", tty->name, + info->xmit_cnt, info->xmit_fifo_room); +#endif + + if (rocket_paranoia_check(info, "rp_stop")) + return; + + if (sGetTxCnt(&info->channel)) + sDisTransmit(&info->channel); +} + +static void rp_start(struct tty_struct *tty) +{ + struct r_port *info = (struct r_port *) tty->driver_data; + +#ifdef ROCKET_DEBUG_FLOW + printk(KERN_INFO "start %s: %d %d....\n", tty->name, + info->xmit_cnt, info->xmit_fifo_room); +#endif + + if (rocket_paranoia_check(info, "rp_stop")) + return; + + sEnTransmit(&info->channel); + set_bit((info->aiop * 8) + info->chan, + (void *) &xmit_flags[info->board]); +} + +/* + * rp_wait_until_sent() --- wait until the transmitter is empty + */ +static void rp_wait_until_sent(struct tty_struct *tty, int timeout) +{ + struct r_port *info = (struct r_port *) tty->driver_data; + CHANNEL_t *cp; + unsigned long orig_jiffies; + int check_time, exit_time; + int txcnt; + + if (rocket_paranoia_check(info, "rp_wait_until_sent")) + return; + + cp = &info->channel; + + orig_jiffies = jiffies; +#ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT + printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...", timeout, + jiffies); + printk(KERN_INFO "cps=%d...", info->cps); +#endif + while (1) { + txcnt = sGetTxCnt(cp); + if (!txcnt) { + if (sGetChanStatusLo(cp) & TXSHRMT) + break; + check_time = (HZ / info->cps) / 5; + } else { + check_time = HZ * txcnt / info->cps; + } + if (timeout) { + exit_time = orig_jiffies + timeout - jiffies; + if (exit_time <= 0) + break; + if (exit_time < check_time) + check_time = exit_time; + } + if (check_time == 0) + check_time = 1; +#ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT + printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...", txcnt, jiffies, check_time); +#endif + msleep_interruptible(jiffies_to_msecs(check_time)); + if (signal_pending(current)) + break; + } + current->state = TASK_RUNNING; +#ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT + printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies); +#endif +} + +/* + * rp_hangup() --- called by tty_hangup() when a hangup is signaled. + */ +static void rp_hangup(struct tty_struct *tty) +{ + CHANNEL_t *cp; + struct r_port *info = (struct r_port *) tty->driver_data; + + if (rocket_paranoia_check(info, "rp_hangup")) + return; + +#if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP)) + printk(KERN_INFO "rp_hangup of ttyR%d...", info->line); +#endif + rp_flush_buffer(tty); + if (info->flags & ROCKET_CLOSING) + return; + if (info->count) + atomic_dec(&rp_num_ports_open); + clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); + + info->count = 0; + info->flags &= ~ROCKET_NORMAL_ACTIVE; + info->tty = NULL; + + cp = &info->channel; + sDisRxFIFO(cp); + sDisTransmit(cp); + sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); + sDisCTSFlowCtl(cp); + sDisTxSoftFlowCtl(cp); + sClrTxXOFF(cp); + info->flags &= ~ROCKET_INITIALIZED; + + wake_up_interruptible(&info->open_wait); +} + +/* + * Exception handler - write char routine. The RocketPort driver uses a + * double-buffering strategy, with the twist that if the in-memory CPU + * buffer is empty, and there's space in the transmit FIFO, the + * writing routines will write directly to transmit FIFO. + * Write buffer and counters protected by spinlocks + */ +static void rp_put_char(struct tty_struct *tty, unsigned char ch) +{ + struct r_port *info = (struct r_port *) tty->driver_data; + CHANNEL_t *cp; + unsigned long flags; + + if (rocket_paranoia_check(info, "rp_put_char")) + return; + + /* Grab the port write semaphore, locking out other processes that try to write to this port */ + down(&info->write_sem); + +#ifdef ROCKET_DEBUG_WRITE + printk(KERN_INFO "rp_put_char %c...", ch); +#endif + + spin_lock_irqsave(&info->slock, flags); + cp = &info->channel; + + if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0) + info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); + + if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) { + info->xmit_buf[info->xmit_head++] = ch; + info->xmit_head &= XMIT_BUF_SIZE - 1; + info->xmit_cnt++; + set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); + } else { + sOutB(sGetTxRxDataIO(cp), ch); + info->xmit_fifo_room--; + } + spin_unlock_irqrestore(&info->slock, flags); + up(&info->write_sem); +} + +/* + * Exception handler - write routine, called when user app writes to the device. + * A per port write semaphore is used to protect from another process writing to + * this port at the same time. This other process could be running on the other CPU + * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out). + * Spinlocks protect the info xmit members. + */ +static int rp_write(struct tty_struct *tty, + const unsigned char *buf, int count) +{ + struct r_port *info = (struct r_port *) tty->driver_data; + CHANNEL_t *cp; + const unsigned char *b; + int c, retval = 0; + unsigned long flags; + + if (count <= 0 || rocket_paranoia_check(info, "rp_write")) + return 0; + + down_interruptible(&info->write_sem); + +#ifdef ROCKET_DEBUG_WRITE + printk(KERN_INFO "rp_write %d chars...", count); +#endif + cp = &info->channel; + + if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count) + info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); + + /* + * If the write queue for the port is empty, and there is FIFO space, stuff bytes + * into FIFO. Use the write queue for temp storage. + */ + if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) { + c = min(count, info->xmit_fifo_room); + b = buf; + + /* Push data into FIFO, 2 bytes at a time */ + sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2); + + /* If there is a byte remaining, write it */ + if (c & 1) + sOutB(sGetTxRxDataIO(cp), b[c - 1]); + + retval += c; + buf += c; + count -= c; + + spin_lock_irqsave(&info->slock, flags); + info->xmit_fifo_room -= c; + spin_unlock_irqrestore(&info->slock, flags); + } + + /* If count is zero, we wrote it all and are done */ + if (!count) + goto end; + + /* Write remaining data into the port's xmit_buf */ + while (1) { + if (info->tty == 0) /* Seemingly obligatory check... */ + goto end; + + c = min(count, min(XMIT_BUF_SIZE - info->xmit_cnt - 1, XMIT_BUF_SIZE - info->xmit_head)); + if (c <= 0) + break; + + b = buf; + memcpy(info->xmit_buf + info->xmit_head, b, c); + + spin_lock_irqsave(&info->slock, flags); + info->xmit_head = + (info->xmit_head + c) & (XMIT_BUF_SIZE - 1); + info->xmit_cnt += c; + spin_unlock_irqrestore(&info->slock, flags); + + buf += c; + count -= c; + retval += c; + } + + if ((retval > 0) && !tty->stopped && !tty->hw_stopped) + set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); + +end: + if (info->xmit_cnt < WAKEUP_CHARS) { + tty_wakeup(tty); + wake_up_interruptible(&tty->write_wait); +#ifdef ROCKETPORT_HAVE_POLL_WAIT + wake_up_interruptible(&tty->poll_wait); +#endif + } + up(&info->write_sem); + return retval; +} + +/* + * Return the number of characters that can be sent. We estimate + * only using the in-memory transmit buffer only, and ignore the + * potential space in the transmit FIFO. + */ +static int rp_write_room(struct tty_struct *tty) +{ + struct r_port *info = (struct r_port *) tty->driver_data; + int ret; + + if (rocket_paranoia_check(info, "rp_write_room")) + return 0; + + ret = XMIT_BUF_SIZE - info->xmit_cnt - 1; + if (ret < 0) + ret = 0; +#ifdef ROCKET_DEBUG_WRITE + printk(KERN_INFO "rp_write_room returns %d...", ret); +#endif + return ret; +} + +/* + * Return the number of characters in the buffer. Again, this only + * counts those characters in the in-memory transmit buffer. + */ +static int rp_chars_in_buffer(struct tty_struct *tty) +{ + struct r_port *info = (struct r_port *) tty->driver_data; + CHANNEL_t *cp; + + if (rocket_paranoia_check(info, "rp_chars_in_buffer")) + return 0; + + cp = &info->channel; + +#ifdef ROCKET_DEBUG_WRITE + printk(KERN_INFO "rp_chars_in_buffer returns %d...", info->xmit_cnt); +#endif + return info->xmit_cnt; +} + +/* + * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the + * r_port struct for the port. Note that spinlock are used to protect info members, + * do not call this function if the spinlock is already held. + */ +static void rp_flush_buffer(struct tty_struct *tty) +{ + struct r_port *info = (struct r_port *) tty->driver_data; + CHANNEL_t *cp; + unsigned long flags; + + if (rocket_paranoia_check(info, "rp_flush_buffer")) + return; + + spin_lock_irqsave(&info->slock, flags); + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + spin_unlock_irqrestore(&info->slock, flags); + + wake_up_interruptible(&tty->write_wait); +#ifdef ROCKETPORT_HAVE_POLL_WAIT + wake_up_interruptible(&tty->poll_wait); +#endif + tty_wakeup(tty); + + cp = &info->channel; + sFlushTxFIFO(cp); +} + +#ifdef CONFIG_PCI + +/* + * Called when a PCI card is found. Retrieves and stores model information, + * init's aiopic and serial port hardware. + * Inputs: i is the board number (0-n) + */ +__init int register_PCI(int i, struct pci_dev *dev) +{ + int num_aiops, aiop, max_num_aiops, num_chan, chan; + unsigned int aiopio[MAX_AIOPS_PER_BOARD]; + char *str, *board_type; + CONTROLLER_t *ctlp; + + int fast_clock = 0; + int altChanRingIndicator = 0; + int ports_per_aiop = 8; + int ret; + unsigned int class_rev; + WordIO_t ConfigIO = 0; + ByteIO_t UPCIRingInd = 0; + + if (!dev || pci_enable_device(dev)) + return 0; + + rcktpt_io_addr[i] = pci_resource_start(dev, 0); + ret = pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev); + + if (ret) { + printk(KERN_INFO " Error during register_PCI(), unable to read config dword \n"); + return 0; + } + + rcktpt_type[i] = ROCKET_TYPE_NORMAL; + rocketModel[i].loadrm2 = 0; + rocketModel[i].startingPortNumber = nextLineNumber; + + /* Depending on the model, set up some config variables */ + switch (dev->device) { + case PCI_DEVICE_ID_RP4QUAD: + str = "Quadcable"; + max_num_aiops = 1; + ports_per_aiop = 4; + rocketModel[i].model = MODEL_RP4QUAD; + strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable"); + rocketModel[i].numPorts = 4; + break; + case PCI_DEVICE_ID_RP8OCTA: + str = "Octacable"; + max_num_aiops = 1; + rocketModel[i].model = MODEL_RP8OCTA; + strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable"); + rocketModel[i].numPorts = 8; + break; + case PCI_DEVICE_ID_URP8OCTA: + str = "Octacable"; + max_num_aiops = 1; + rocketModel[i].model = MODEL_UPCI_RP8OCTA; + strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable"); + rocketModel[i].numPorts = 8; + break; + case PCI_DEVICE_ID_RP8INTF: + str = "8"; + max_num_aiops = 1; + rocketModel[i].model = MODEL_RP8INTF; + strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F"); + rocketModel[i].numPorts = 8; + break; + case PCI_DEVICE_ID_URP8INTF: + str = "8"; + max_num_aiops = 1; + rocketModel[i].model = MODEL_UPCI_RP8INTF; + strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F"); + rocketModel[i].numPorts = 8; + break; + case PCI_DEVICE_ID_RP8J: + str = "8J"; + max_num_aiops = 1; + rocketModel[i].model = MODEL_RP8J; + strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors"); + rocketModel[i].numPorts = 8; + break; + case PCI_DEVICE_ID_RP4J: + str = "4J"; + max_num_aiops = 1; + ports_per_aiop = 4; + rocketModel[i].model = MODEL_RP4J; + strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors"); + rocketModel[i].numPorts = 4; + break; + case PCI_DEVICE_ID_RP8SNI: + str = "8 (DB78 Custom)"; + max_num_aiops = 1; + rocketModel[i].model = MODEL_RP8SNI; + strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78"); + rocketModel[i].numPorts = 8; + break; + case PCI_DEVICE_ID_RP16SNI: + str = "16 (DB78 Custom)"; + max_num_aiops = 2; + rocketModel[i].model = MODEL_RP16SNI; + strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78"); + rocketModel[i].numPorts = 16; + break; + case PCI_DEVICE_ID_RP16INTF: + str = "16"; + max_num_aiops = 2; + rocketModel[i].model = MODEL_RP16INTF; + strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F"); + rocketModel[i].numPorts = 16; + break; + case PCI_DEVICE_ID_URP16INTF: + str = "16"; + max_num_aiops = 2; + rocketModel[i].model = MODEL_UPCI_RP16INTF; + strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F"); + rocketModel[i].numPorts = 16; + break; + case PCI_DEVICE_ID_CRP16INTF: + str = "16"; + max_num_aiops = 2; + rocketModel[i].model = MODEL_CPCI_RP16INTF; + strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F"); + rocketModel[i].numPorts = 16; + break; + case PCI_DEVICE_ID_RP32INTF: + str = "32"; + max_num_aiops = 4; + rocketModel[i].model = MODEL_RP32INTF; + strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F"); + rocketModel[i].numPorts = 32; + break; + case PCI_DEVICE_ID_URP32INTF: + str = "32"; + max_num_aiops = 4; + rocketModel[i].model = MODEL_UPCI_RP32INTF; + strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F"); + rocketModel[i].numPorts = 32; + break; + case PCI_DEVICE_ID_RPP4: + str = "Plus Quadcable"; + max_num_aiops = 1; + ports_per_aiop = 4; + altChanRingIndicator++; + fast_clock++; + rocketModel[i].model = MODEL_RPP4; + strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port"); + rocketModel[i].numPorts = 4; + break; + case PCI_DEVICE_ID_RPP8: + str = "Plus Octacable"; + max_num_aiops = 2; + ports_per_aiop = 4; + altChanRingIndicator++; + fast_clock++; + rocketModel[i].model = MODEL_RPP8; + strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port"); + rocketModel[i].numPorts = 8; + break; + case PCI_DEVICE_ID_RP2_232: + str = "Plus 2 (RS-232)"; + max_num_aiops = 1; + ports_per_aiop = 2; + altChanRingIndicator++; + fast_clock++; + rocketModel[i].model = MODEL_RP2_232; + strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232"); + rocketModel[i].numPorts = 2; + break; + case PCI_DEVICE_ID_RP2_422: + str = "Plus 2 (RS-422)"; + max_num_aiops = 1; + ports_per_aiop = 2; + altChanRingIndicator++; + fast_clock++; + rocketModel[i].model = MODEL_RP2_422; + strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422"); + rocketModel[i].numPorts = 2; + break; + case PCI_DEVICE_ID_RP6M: + + max_num_aiops = 1; + ports_per_aiop = 6; + str = "6-port"; + + /* If class_rev is 1, the rocketmodem flash must be loaded. If it is 2 it is a "socketed" version. */ + if ((class_rev & 0xFF) == 1) { + rcktpt_type[i] = ROCKET_TYPE_MODEMII; + rocketModel[i].loadrm2 = 1; + } else { + rcktpt_type[i] = ROCKET_TYPE_MODEM; + } + + rocketModel[i].model = MODEL_RP6M; + strcpy(rocketModel[i].modelString, "RocketModem 6 port"); + rocketModel[i].numPorts = 6; + break; + case PCI_DEVICE_ID_RP4M: + max_num_aiops = 1; + ports_per_aiop = 4; + str = "4-port"; + if ((class_rev & 0xFF) == 1) { + rcktpt_type[i] = ROCKET_TYPE_MODEMII; + rocketModel[i].loadrm2 = 1; + } else { + rcktpt_type[i] = ROCKET_TYPE_MODEM; + } + + rocketModel[i].model = MODEL_RP4M; + strcpy(rocketModel[i].modelString, "RocketModem 4 port"); + rocketModel[i].numPorts = 4; + break; + default: + str = "(unknown/unsupported)"; + max_num_aiops = 0; + break; + } + + /* + * Check for UPCI boards. + */ + + switch (dev->device) { + case PCI_DEVICE_ID_URP32INTF: + case PCI_DEVICE_ID_URP8INTF: + case PCI_DEVICE_ID_URP16INTF: + case PCI_DEVICE_ID_CRP16INTF: + case PCI_DEVICE_ID_URP8OCTA: + rcktpt_io_addr[i] = pci_resource_start(dev, 2); + ConfigIO = pci_resource_start(dev, 1); + if (dev->device == PCI_DEVICE_ID_URP8OCTA) { + UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; + + /* + * Check for octa or quad cable. + */ + if (! + (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) & + PCI_GPIO_CTRL_8PORT)) { + str = "Quadcable"; + ports_per_aiop = 4; + rocketModel[i].numPorts = 4; + } + } + break; + case PCI_DEVICE_ID_UPCI_RM3_8PORT: + str = "8 ports"; + max_num_aiops = 1; + rocketModel[i].model = MODEL_UPCI_RM3_8PORT; + strcpy(rocketModel[i].modelString, "RocketModem III 8 port"); + rocketModel[i].numPorts = 8; + rcktpt_io_addr[i] = pci_resource_start(dev, 2); + UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; + ConfigIO = pci_resource_start(dev, 1); + rcktpt_type[i] = ROCKET_TYPE_MODEMIII; + break; + case PCI_DEVICE_ID_UPCI_RM3_4PORT: + str = "4 ports"; + max_num_aiops = 1; + rocketModel[i].model = MODEL_UPCI_RM3_4PORT; + strcpy(rocketModel[i].modelString, "RocketModem III 4 port"); + rocketModel[i].numPorts = 4; + rcktpt_io_addr[i] = pci_resource_start(dev, 2); + UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; + ConfigIO = pci_resource_start(dev, 1); + rcktpt_type[i] = ROCKET_TYPE_MODEMIII; + break; + default: + break; + } + + switch (rcktpt_type[i]) { + case ROCKET_TYPE_MODEM: + board_type = "RocketModem"; + break; + case ROCKET_TYPE_MODEMII: + board_type = "RocketModem II"; + break; + case ROCKET_TYPE_MODEMIII: + board_type = "RocketModem III"; + break; + default: + board_type = "RocketPort"; + break; + } + + if (fast_clock) { + sClockPrescale = 0x12; /* mod 2 (divide by 3) */ + rp_baud_base[i] = 921600; + } else { + /* + * If support_low_speed is set, use the slow clock + * prescale, which supports 50 bps + */ + if (support_low_speed) { + /* mod 9 (divide by 10) prescale */ + sClockPrescale = 0x19; + rp_baud_base[i] = 230400; + } else { + /* mod 4 (devide by 5) prescale */ + sClockPrescale = 0x14; + rp_baud_base[i] = 460800; + } + } + + for (aiop = 0; aiop < max_num_aiops; aiop++) + aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40); + ctlp = sCtlNumToCtlPtr(i); + num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd); + for (aiop = 0; aiop < max_num_aiops; aiop++) + ctlp->AiopNumChan[aiop] = ports_per_aiop; + + printk("Comtrol PCI controller #%d ID 0x%x found in bus:slot:fn %s at address %04lx, " + "%d AIOP(s) (%s)\n", i, dev->device, pci_name(dev), + rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString); + printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n", + rocketModel[i].modelString, + rocketModel[i].startingPortNumber, + rocketModel[i].startingPortNumber + + rocketModel[i].numPorts - 1); + + if (num_aiops <= 0) { + rcktpt_io_addr[i] = 0; + return (0); + } + is_PCI[i] = 1; + + /* Reset the AIOPIC, init the serial ports */ + for (aiop = 0; aiop < num_aiops; aiop++) { + sResetAiopByNum(ctlp, aiop); + num_chan = ports_per_aiop; + for (chan = 0; chan < num_chan; chan++) + init_r_port(i, aiop, chan, dev); + } + + /* Rocket modems must be reset */ + if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || + (rcktpt_type[i] == ROCKET_TYPE_MODEMII) || + (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) { + num_chan = ports_per_aiop; + for (chan = 0; chan < num_chan; chan++) + sPCIModemReset(ctlp, chan, 1); + mdelay(500); + for (chan = 0; chan < num_chan; chan++) + sPCIModemReset(ctlp, chan, 0); + mdelay(500); + rmSpeakerReset(ctlp, rocketModel[i].model); + } + return (1); +} + +/* + * Probes for PCI cards, inits them if found + * Input: board_found = number of ISA boards already found, or the + * starting board number + * Returns: Number of PCI boards found + */ +static int __init init_PCI(int boards_found) +{ + struct pci_dev *dev = NULL; + int count = 0; + + /* Work through the PCI device list, pulling out ours */ + while ((dev = pci_find_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) { + if (register_PCI(count + boards_found, dev)) + count++; + } + return (count); +} + +#endif /* CONFIG_PCI */ + +/* + * Probes for ISA cards + * Input: i = the board number to look for + * Returns: 1 if board found, 0 else + */ +static int __init init_ISA(int i) +{ + int num_aiops, num_chan = 0, total_num_chan = 0; + int aiop, chan; + unsigned int aiopio[MAX_AIOPS_PER_BOARD]; + CONTROLLER_t *ctlp; + char *type_string; + + /* If io_addr is zero, no board configured */ + if (rcktpt_io_addr[i] == 0) + return (0); + + /* Reserve the IO region */ + if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) { + printk(KERN_INFO "Unable to reserve IO region for configured ISA RocketPort at address 0x%lx, board not installed...\n", rcktpt_io_addr[i]); + rcktpt_io_addr[i] = 0; + return (0); + } + + ctlp = sCtlNumToCtlPtr(i); + + ctlp->boardType = rcktpt_type[i]; + + switch (rcktpt_type[i]) { + case ROCKET_TYPE_PC104: + type_string = "(PC104)"; + break; + case ROCKET_TYPE_MODEM: + type_string = "(RocketModem)"; + break; + case ROCKET_TYPE_MODEMII: + type_string = "(RocketModem II)"; + break; + default: + type_string = ""; + break; + } + + /* + * If support_low_speed is set, use the slow clock prescale, + * which supports 50 bps + */ + if (support_low_speed) { + sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */ + rp_baud_base[i] = 230400; + } else { + sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */ + rp_baud_base[i] = 460800; + } + + for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++) + aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400); + + num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0); + + if (ctlp->boardType == ROCKET_TYPE_PC104) { + sEnAiop(ctlp, 2); /* only one AIOPIC, but these */ + sEnAiop(ctlp, 3); /* CSels used for other stuff */ + } + + /* If something went wrong initing the AIOP's release the ISA IO memory */ + if (num_aiops <= 0) { + release_region(rcktpt_io_addr[i], 64); + rcktpt_io_addr[i] = 0; + return (0); + } + + rocketModel[i].startingPortNumber =