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!
diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c
new file mode 100644
index 0000000..5bcbeb0
--- /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 <config/modversions.h>
+#endif
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/major.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/wait.h>
+#include <linux/pci.h>
+#include <asm/uaccess.h>
+#include <asm/atomic.h>
+#include <linux/bitops.h>
+#include <linux/spinlock.h>
+#include <asm/semaphore.h>
+#include <linux/init.h>
+
+/****** 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 = nextLineNumber;
+
+ for (aiop = 0; aiop < num_aiops; aiop++) {
+ sResetAiopByNum(ctlp, aiop);
+ sEnAiop(ctlp, aiop);
+ num_chan = sGetAiopNumChan(ctlp, aiop);
+ total_num_chan += num_chan;
+ for (chan = 0; chan < num_chan; chan++)
+ init_r_port(i, aiop, chan, NULL);
+ }
+ is_PCI[i] = 0;
+ if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
+ num_chan = sGetAiopNumChan(ctlp, 0);
+ total_num_chan = num_chan;
+ for (chan = 0; chan < num_chan; chan++)
+ sModemReset(ctlp, chan, 1);
+ mdelay(500);
+ for (chan = 0; chan < num_chan; chan++)
+ sModemReset(ctlp, chan, 0);
+ mdelay(500);
+ strcpy(rocketModel[i].modelString, "RocketModem ISA");
+ } else {
+ strcpy(rocketModel[i].modelString, "RocketPort ISA");
+ }
+ rocketModel[i].numPorts = total_num_chan;
+ rocketModel[i].model = MODEL_ISA;
+
+ printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
+ i, rcktpt_io_addr[i], num_aiops, type_string);
+
+ printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
+ rocketModel[i].modelString,
+ rocketModel[i].startingPortNumber,
+ rocketModel[i].startingPortNumber +
+ rocketModel[i].numPorts - 1);
+
+ return (1);
+}
+
+static struct tty_operations rocket_ops = {
+ .open = rp_open,
+ .close = rp_close,
+ .write = rp_write,
+ .put_char = rp_put_char,
+ .write_room = rp_write_room,
+ .chars_in_buffer = rp_chars_in_buffer,
+ .flush_buffer = rp_flush_buffer,
+ .ioctl = rp_ioctl,
+ .throttle = rp_throttle,
+ .unthrottle = rp_unthrottle,
+ .set_termios = rp_set_termios,
+ .stop = rp_stop,
+ .start = rp_start,
+ .hangup = rp_hangup,
+ .break_ctl = rp_break,
+ .send_xchar = rp_send_xchar,
+ .wait_until_sent = rp_wait_until_sent,
+ .tiocmget = rp_tiocmget,
+ .tiocmset = rp_tiocmset,
+};
+
+/*
+ * The module "startup" routine; it's run when the module is loaded.
+ */
+int __init rp_init(void)
+{
+ int retval, pci_boards_found, isa_boards_found, i;
+
+ printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
+ ROCKET_VERSION, ROCKET_DATE);
+
+ rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
+ if (!rocket_driver)
+ return -ENOMEM;
+
+ /*
+ * Set up the timer channel.
+ */
+ init_timer(&rocket_timer);
+ rocket_timer.function = rp_do_poll;
+
+ /*
+ * Initialize the array of pointers to our own internal state
+ * structures.
+ */
+ memset(rp_table, 0, sizeof (rp_table));
+ memset(xmit_flags, 0, sizeof (xmit_flags));
+
+ for (i = 0; i < MAX_RP_PORTS; i++)
+ lineNumbers[i] = 0;
+ nextLineNumber = 0;
+ memset(rocketModel, 0, sizeof (rocketModel));
+
+ /*
+ * If board 1 is non-zero, there is at least one ISA configured. If controller is
+ * zero, use the default controller IO address of board1 + 0x40.
+ */
+ if (board1) {
+ if (controller == 0)
+ controller = board1 + 0x40;
+ } else {
+ controller = 0; /* Used as a flag, meaning no ISA boards */
+ }
+
+ /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
+ if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
+ printk(KERN_INFO "Unable to reserve IO region for first configured ISA RocketPort controller 0x%lx. Driver exiting \n", controller);
+ return -EBUSY;
+ }
+
+ /* Store ISA variable retrieved from command line or .conf file. */
+ rcktpt_io_addr[0] = board1;
+ rcktpt_io_addr[1] = board2;
+ rcktpt_io_addr[2] = board3;
+ rcktpt_io_addr[3] = board4;
+
+ rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
+ rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
+ rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
+ rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
+ rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
+ rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
+ rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
+ rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
+
+ /*
+ * Set up the tty driver structure and then register this
+ * driver with the tty layer.
+ */
+
+ rocket_driver->owner = THIS_MODULE;
+ rocket_driver->flags = TTY_DRIVER_NO_DEVFS;
+ rocket_driver->devfs_name = "tts/R";
+ rocket_driver->name = "ttyR";
+ rocket_driver->driver_name = "Comtrol RocketPort";
+ rocket_driver->major = TTY_ROCKET_MAJOR;
+ rocket_driver->minor_start = 0;
+ rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
+ rocket_driver->subtype = SERIAL_TYPE_NORMAL;
+ rocket_driver->init_termios = tty_std_termios;
+ rocket_driver->init_termios.c_cflag =
+ B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+#ifdef ROCKET_SOFT_FLOW
+ rocket_driver->flags |= TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+#endif
+ tty_set_operations(rocket_driver, &rocket_ops);
+
+ retval = tty_register_driver(rocket_driver);
+ if (retval < 0) {
+ printk(KERN_INFO "Couldn't install tty RocketPort driver (error %d)\n", -retval);
+ put_tty_driver(rocket_driver);
+ return -1;
+ }
+
+#ifdef ROCKET_DEBUG_OPEN
+ printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
+#endif
+
+ /*
+ * OK, let's probe each of the controllers looking for boards. Any boards found
+ * will be initialized here.
+ */
+ isa_boards_found = 0;
+ pci_boards_found = 0;
+
+ for (i = 0; i < NUM_BOARDS; i++) {
+ if (init_ISA(i))
+ isa_boards_found++;
+ }
+
+#ifdef CONFIG_PCI
+ if (isa_boards_found < NUM_BOARDS)
+ pci_boards_found = init_PCI(isa_boards_found);
+#endif
+
+ max_board = pci_boards_found + isa_boards_found;
+
+ if (max_board == 0) {
+ printk(KERN_INFO "No rocketport ports found; unloading driver.\n");
+ del_timer_sync(&rocket_timer);
+ tty_unregister_driver(rocket_driver);
+ put_tty_driver(rocket_driver);
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+#ifdef MODULE
+
+static void rp_cleanup_module(void)
+{
+ int retval;
+ int i;
+
+ del_timer_sync(&rocket_timer);
+
+ retval = tty_unregister_driver(rocket_driver);
+ if (retval)
+ printk(KERN_INFO "Error %d while trying to unregister "
+ "rocketport driver\n", -retval);
+ put_tty_driver(rocket_driver);
+
+ for (i = 0; i < MAX_RP_PORTS; i++) {
+ if (rp_table[i])
+ kfree(rp_table[i]);
+ }
+
+ for (i = 0; i < NUM_BOARDS; i++) {
+ if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
+ continue;
+ release_region(rcktpt_io_addr[i], 64);
+ }
+ if (controller)
+ release_region(controller, 4);
+}
+#endif
+
+#ifndef TRUE
+#define TRUE 1
+#endif
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+static Byte_t RData[RDATASIZE] = {
+ 0x00, 0x09, 0xf6, 0x82,
+ 0x02, 0x09, 0x86, 0xfb,
+ 0x04, 0x09, 0x00, 0x0a,
+ 0x06, 0x09, 0x01, 0x0a,
+ 0x08, 0x09, 0x8a, 0x13,
+ 0x0a, 0x09, 0xc5, 0x11,
+ 0x0c, 0x09, 0x86, 0x85,
+ 0x0e, 0x09, 0x20, 0x0a,
+ 0x10, 0x09, 0x21, 0x0a,
+ 0x12, 0x09, 0x41, 0xff,
+ 0x14, 0x09, 0x82, 0x00,
+ 0x16, 0x09, 0x82, 0x7b,
+ 0x18, 0x09, 0x8a, 0x7d,
+ 0x1a, 0x09, 0x88, 0x81,
+ 0x1c, 0x09, 0x86, 0x7a,
+ 0x1e, 0x09, 0x84, 0x81,
+ 0x20, 0x09, 0x82, 0x7c,
+ 0x22, 0x09, 0x0a, 0x0a
+};
+
+static Byte_t RRegData[RREGDATASIZE] = {
+ 0x00, 0x09, 0xf6, 0x82, /* 00: Stop Rx processor */
+ 0x08, 0x09, 0x8a, 0x13, /* 04: Tx software flow control */
+ 0x0a, 0x09, 0xc5, 0x11, /* 08: XON char */
+ 0x0c, 0x09, 0x86, 0x85, /* 0c: XANY */
+ 0x12, 0x09, 0x41, 0xff, /* 10: Rx mask char */
+ 0x14, 0x09, 0x82, 0x00, /* 14: Compare/Ignore #0 */
+ 0x16, 0x09, 0x82, 0x7b, /* 18: Compare #1 */
+ 0x18, 0x09, 0x8a, 0x7d, /* 1c: Compare #2 */
+ 0x1a, 0x09, 0x88, 0x81, /* 20: Interrupt #1 */
+ 0x1c, 0x09, 0x86, 0x7a, /* 24: Ignore/Replace #1 */
+ 0x1e, 0x09, 0x84, 0x81, /* 28: Interrupt #2 */
+ 0x20, 0x09, 0x82, 0x7c, /* 2c: Ignore/Replace #2 */
+ 0x22, 0x09, 0x0a, 0x0a /* 30: Rx FIFO Enable */
+};
+
+CONTROLLER_T sController[CTL_SIZE] = {
+ {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
+ {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
+ {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
+ {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
+ {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
+ {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
+ {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
+ {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}
+};
+
+Byte_t sBitMapClrTbl[8] = {
+ 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f
+};
+
+Byte_t sBitMapSetTbl[8] = {
+ 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80
+};
+
+int sClockPrescale = 0x14;
+
+/***************************************************************************
+Function: sInitController
+Purpose: Initialization of controller global registers and controller
+ structure.
+Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
+ IRQNum,Frequency,PeriodicOnly)
+ CONTROLLER_T *CtlP; Ptr to controller structure
+ int CtlNum; Controller number
+ ByteIO_t MudbacIO; Mudbac base I/O address.
+ ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
+ This list must be in the order the AIOPs will be found on the
+ controller. Once an AIOP in the list is not found, it is
+ assumed that there are no more AIOPs on the controller.
+ int AiopIOListSize; Number of addresses in AiopIOList
+ int IRQNum; Interrupt Request number. Can be any of the following:
+ 0: Disable global interrupts
+ 3: IRQ 3
+ 4: IRQ 4
+ 5: IRQ 5
+ 9: IRQ 9
+ 10: IRQ 10
+ 11: IRQ 11
+ 12: IRQ 12
+ 15: IRQ 15
+ Byte_t Frequency: A flag identifying the frequency
+ of the periodic interrupt, can be any one of the following:
+ FREQ_DIS - periodic interrupt disabled
+ FREQ_137HZ - 137 Hertz
+ FREQ_69HZ - 69 Hertz
+ FREQ_34HZ - 34 Hertz
+ FREQ_17HZ - 17 Hertz
+ FREQ_9HZ - 9 Hertz
+ FREQ_4HZ - 4 Hertz
+ If IRQNum is set to 0 the Frequency parameter is
+ overidden, it is forced to a value of FREQ_DIS.
+ int PeriodicOnly: TRUE if all interrupts except the periodic
+ interrupt are to be blocked.
+ FALSE is both the periodic interrupt and
+ other channel interrupts are allowed.
+ If IRQNum is set to 0 the PeriodicOnly parameter is
+ overidden, it is forced to a value of FALSE.
+Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
+ initialization failed.
+
+Comments:
+ If periodic interrupts are to be disabled but AIOP interrupts
+ are allowed, set Frequency to FREQ_DIS and PeriodicOnly to FALSE.
+
+ If interrupts are to be completely disabled set IRQNum to 0.
+
+ Setting Frequency to FREQ_DIS and PeriodicOnly to TRUE is an
+ invalid combination.
+
+ This function performs initialization of global interrupt modes,
+ but it does not actually enable global interrupts. To enable
+ and disable global interrupts use functions sEnGlobalInt() and
+ sDisGlobalInt(). Enabling of global interrupts is normally not
+ done until all other initializations are complete.
+
+ Even if interrupts are globally enabled, they must also be
+ individually enabled for each channel that is to generate
+ interrupts.
+
+Warnings: No range checking on any of the parameters is done.
+
+ No context switches are allowed while executing this function.
+
+ After this function all AIOPs on the controller are disabled,
+ they can be enabled with sEnAiop().
+*/
+int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
+ ByteIO_t * AiopIOList, int AiopIOListSize, int IRQNum,
+ Byte_t Frequency, int PeriodicOnly)
+{
+ int i;
+ ByteIO_t io;
+ int done;
+
+ CtlP->AiopIntrBits = aiop_intr_bits;
+ CtlP->AltChanRingIndicator = 0;
+ CtlP->CtlNum = CtlNum;
+ CtlP->CtlID = CTLID_0001; /* controller release 1 */
+ CtlP->BusType = isISA;
+ CtlP->MBaseIO = MudbacIO;
+ CtlP->MReg1IO = MudbacIO + 1;
+ CtlP->MReg2IO = MudbacIO + 2;
+ CtlP->MReg3IO = MudbacIO + 3;
+#if 1
+ CtlP->MReg2 = 0; /* interrupt disable */
+ CtlP->MReg3 = 0; /* no periodic interrupts */
+#else
+ if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
+ CtlP->MReg2 = 0; /* interrupt disable */
+ CtlP->MReg3 = 0; /* no periodic interrupts */
+ } else {
+ CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
+ CtlP->MReg3 = Frequency; /* set frequency */
+ if (PeriodicOnly) { /* periodic interrupt only */
+ CtlP->MReg3 |= PERIODIC_ONLY;
+ }
+ }
+#endif
+ sOutB(CtlP->MReg2IO, CtlP->MReg2);
+ sOutB(CtlP->MReg3IO, CtlP->MReg3);
+ sControllerEOI(CtlP); /* clear EOI if warm init */
+ /* Init AIOPs */
+ CtlP->NumAiop = 0;
+ for (i = done = 0; i < AiopIOListSize; i++) {
+ io = AiopIOList[i];
+ CtlP->AiopIO[i] = (WordIO_t) io;
+ CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
+ sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
+ sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
+ if (done)
+ continue;
+ sEnAiop(CtlP, i); /* enable the AIOP */
+ CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
+ if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
+ done = 1; /* done looking for AIOPs */
+ else {
+ CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
+ sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
+ sOutB(io + _INDX_DATA, sClockPrescale);
+ CtlP->NumAiop++; /* bump count of AIOPs */
+ }
+ sDisAiop(CtlP, i); /* disable AIOP */
+ }
+
+ if (CtlP->NumAiop == 0)
+ return (-1);
+ else
+ return (CtlP->NumAiop);
+}
+
+/***************************************************************************
+Function: sPCIInitController
+Purpose: Initialization of controller global registers and controller
+ structure.
+Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
+ IRQNum,Frequency,PeriodicOnly)
+ CONTROLLER_T *CtlP; Ptr to controller structure
+ int CtlNum; Controller number
+ ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
+ This list must be in the order the AIOPs will be found on the
+ controller. Once an AIOP in the list is not found, it is
+ assumed that there are no more AIOPs on the controller.
+ int AiopIOListSize; Number of addresses in AiopIOList
+ int IRQNum; Interrupt Request number. Can be any of the following:
+ 0: Disable global interrupts
+ 3: IRQ 3
+ 4: IRQ 4
+ 5: IRQ 5
+ 9: IRQ 9
+ 10: IRQ 10
+ 11: IRQ 11
+ 12: IRQ 12
+ 15: IRQ 15
+ Byte_t Frequency: A flag identifying the frequency
+ of the periodic interrupt, can be any one of the following:
+ FREQ_DIS - periodic interrupt disabled
+ FREQ_137HZ - 137 Hertz
+ FREQ_69HZ - 69 Hertz
+ FREQ_34HZ - 34 Hertz
+ FREQ_17HZ - 17 Hertz
+ FREQ_9HZ - 9 Hertz
+ FREQ_4HZ - 4 Hertz
+ If IRQNum is set to 0 the Frequency parameter is
+ overidden, it is forced to a value of FREQ_DIS.
+ int PeriodicOnly: TRUE if all interrupts except the periodic
+ interrupt are to be blocked.
+ FALSE is both the periodic interrupt and
+ other channel interrupts are allowed.
+ If IRQNum is set to 0 the PeriodicOnly parameter is
+ overidden, it is forced to a value of FALSE.
+Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
+ initialization failed.
+
+Comments:
+ If periodic interrupts are to be disabled but AIOP interrupts
+ are allowed, set Frequency to FREQ_DIS and PeriodicOnly to FALSE.
+
+ If interrupts are to be completely disabled set IRQNum to 0.
+
+ Setting Frequency to FREQ_DIS and PeriodicOnly to TRUE is an
+ invalid combination.
+
+ This function performs initialization of global interrupt modes,
+ but it does not actually enable global interrupts. To enable
+ and disable global interrupts use functions sEnGlobalInt() and
+ sDisGlobalInt(). Enabling of global interrupts is normally not
+ done until all other initializations are complete.
+
+ Even if interrupts are globally enabled, they must also be
+ individually enabled for each channel that is to generate
+ interrupts.
+
+Warnings: No range checking on any of the parameters is done.
+
+ No context switches are allowed while executing this function.
+
+ After this function all AIOPs on the controller are disabled,
+ they can be enabled with sEnAiop().
+*/
+int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
+ ByteIO_t * AiopIOList, int AiopIOListSize,
+ WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
+ int PeriodicOnly, int altChanRingIndicator,
+ int UPCIRingInd)
+{
+ int i;
+ ByteIO_t io;
+
+ CtlP->AltChanRingIndicator = altChanRingIndicator;
+ CtlP->UPCIRingInd = UPCIRingInd;
+ CtlP->CtlNum = CtlNum;
+ CtlP->CtlID = CTLID_0001; /* controller release 1 */
+ CtlP->BusType = isPCI; /* controller release 1 */
+
+ if (ConfigIO) {
+ CtlP->isUPCI = 1;
+ CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
+ CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
+ CtlP->AiopIntrBits = upci_aiop_intr_bits;
+ } else {
+ CtlP->isUPCI = 0;
+ CtlP->PCIIO =
+ (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
+ CtlP->AiopIntrBits = aiop_intr_bits;
+ }
+
+ sPCIControllerEOI(CtlP); /* clear EOI if warm init */
+ /* Init AIOPs */
+ CtlP->NumAiop = 0;
+ for (i = 0; i < AiopIOListSize; i++) {
+ io = AiopIOList[i];
+ CtlP->AiopIO[i] = (WordIO_t) io;
+ CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
+
+ CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
+ if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
+ break; /* done looking for AIOPs */
+
+ CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
+ sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
+ sOutB(io + _INDX_DATA, sClockPrescale);
+ CtlP->NumAiop++; /* bump count of AIOPs */
+ }
+
+ if (CtlP->NumAiop == 0)
+ return (-1);
+ else
+ return (CtlP->NumAiop);
+}
+
+/***************************************************************************
+Function: sReadAiopID
+Purpose: Read the AIOP idenfication number directly from an AIOP.
+Call: sReadAiopID(io)
+ ByteIO_t io: AIOP base I/O address
+Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
+ is replace by an identifying number.
+ Flag AIOPID_NULL if no valid AIOP is found
+Warnings: No context switches are allowed while executing this function.
+
+*/
+int sReadAiopID(ByteIO_t io)
+{
+ Byte_t AiopID; /* ID byte from AIOP */
+
+ sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
+ sOutB(io + _CMD_REG, 0x0);
+ AiopID = sInW(io + _CHN_STAT0) & 0x07;
+ if (AiopID == 0x06)
+ return (1);
+ else /* AIOP does not exist */
+ return (-1);
+}
+
+/***************************************************************************
+Function: sReadAiopNumChan
+Purpose: Read the number of channels available in an AIOP directly from
+ an AIOP.
+Call: sReadAiopNumChan(io)
+ WordIO_t io: AIOP base I/O address
+Return: int: The number of channels available
+Comments: The number of channels is determined by write/reads from identical
+ offsets within the SRAM address spaces for channels 0 and 4.
+ If the channel 4 space is mirrored to channel 0 it is a 4 channel
+ AIOP, otherwise it is an 8 channel.
+Warnings: No context switches are allowed while executing this function.
+*/
+int sReadAiopNumChan(WordIO_t io)
+{
+ Word_t x;
+ static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
+
+ /* write to chan 0 SRAM */
+ sOutDW((DWordIO_t) io + _INDX_ADDR, *((DWord_t *) & R[0]));
+ sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
+ x = sInW(io + _INDX_DATA);
+ sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
+ if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
+ return (8);
+ else
+ return (4);
+}
+
+/***************************************************************************
+Function: sInitChan
+Purpose: Initialization of a channel and channel structure
+Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
+ CONTROLLER_T *CtlP; Ptr to controller structure
+ CHANNEL_T *ChP; Ptr to channel structure
+ int AiopNum; AIOP number within controller
+ int ChanNum; Channel number within AIOP
+Return: int: TRUE if initialization succeeded, FALSE if it fails because channel
+ number exceeds number of channels available in AIOP.
+Comments: This function must be called before a channel can be used.
+Warnings: No range checking on any of the parameters is done.
+
+ No context switches are allowed while executing this function.
+*/
+int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
+ int ChanNum)
+{
+ int i;
+ WordIO_t AiopIO;
+ WordIO_t ChIOOff;
+ Byte_t *ChR;
+ Word_t ChOff;
+ static Byte_t R[4];
+ int brd9600;
+
+ if (ChanNum >= CtlP->AiopNumChan[AiopNum])
+ return (FALSE); /* exceeds num chans in AIOP */
+
+ /* Channel, AIOP, and controller identifiers */
+ ChP->CtlP = CtlP;
+ ChP->ChanID = CtlP->AiopID[AiopNum];
+ ChP->AiopNum = AiopNum;
+ ChP->ChanNum = ChanNum;
+
+ /* Global direct addresses */
+ AiopIO = CtlP->AiopIO[AiopNum];
+ ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
+ ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
+ ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
+ ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
+ ChP->IndexData = AiopIO + _INDX_DATA;
+
+ /* Channel direct addresses */
+ ChIOOff = AiopIO + ChP->ChanNum * 2;
+ ChP->TxRxData = ChIOOff + _TD0;
+ ChP->ChanStat = ChIOOff + _CHN_STAT0;
+ ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
+ ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
+
+ /* Initialize the channel from the RData array */
+ for (i = 0; i < RDATASIZE; i += 4) {
+ R[0] = RData[i];
+ R[1] = RData[i + 1] + 0x10 * ChanNum;
+ R[2] = RData[i + 2];
+ R[3] = RData[i + 3];
+ sOutDW(ChP->IndexAddr, *((DWord_t *) & R[0]));
+ }
+
+ ChR = ChP->R;
+ for (i = 0; i < RREGDATASIZE; i += 4) {
+ ChR[i] = RRegData[i];
+ ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
+ ChR[i + 2] = RRegData[i + 2];
+ ChR[i + 3] = RRegData[i + 3];
+ }
+
+ /* Indexed registers */
+ ChOff = (Word_t) ChanNum *0x1000;
+
+ if (sClockPrescale == 0x14)
+ brd9600 = 47;
+ else
+ brd9600 = 23;
+
+ ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
+ ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
+ ChP->BaudDiv[2] = (Byte_t) brd9600;
+ ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
+ sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->BaudDiv[0]);
+
+ ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
+ ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
+ ChP->TxControl[2] = 0;
+ ChP->TxControl[3] = 0;
+ sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
+
+ ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
+ ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
+ ChP->RxControl[2] = 0;
+ ChP->RxControl[3] = 0;
+ sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
+
+ ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
+ ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
+ ChP->TxEnables[2] = 0;
+ ChP->TxEnables[3] = 0;
+ sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxEnables[0]);
+
+ ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
+ ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
+ ChP->TxCompare[2] = 0;
+ ChP->TxCompare[3] = 0;
+ sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxCompare[0]);
+
+ ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
+ ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
+ ChP->TxReplace1[2] = 0;
+ ChP->TxReplace1[3] = 0;
+ sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace1[0]);
+
+ ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
+ ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
+ ChP->TxReplace2[2] = 0;
+ ChP->TxReplace2[3] = 0;
+ sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace2[0]);
+
+ ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
+ ChP->TxFIFO = ChOff + _TX_FIFO;
+
+ sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
+ sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
+ sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
+ sOutW(ChP->IndexData, 0);
+ ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
+ ChP->RxFIFO = ChOff + _RX_FIFO;
+
+ sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
+ sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
+ sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
+ sOutW(ChP->IndexData, 0);
+ sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
+ sOutW(ChP->IndexData, 0);
+ ChP->TxPrioCnt = ChOff + _TXP_CNT;
+ sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
+ sOutB(ChP->IndexData, 0);
+ ChP->TxPrioPtr = ChOff + _TXP_PNTR;
+ sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
+ sOutB(ChP->IndexData, 0);
+ ChP->TxPrioBuf = ChOff + _TXP_BUF;
+ sEnRxProcessor(ChP); /* start the Rx processor */
+
+ return (TRUE);
+}
+
+/***************************************************************************
+Function: sStopRxProcessor
+Purpose: Stop the receive processor from processing a channel.
+Call: sStopRxProcessor(ChP)
+ CHANNEL_T *ChP; Ptr to channel structure
+
+Comments: The receive processor can be started again with sStartRxProcessor().
+ This function causes the receive processor to skip over the
+ stopped channel. It does not stop it from processing other channels.
+
+Warnings: No context switches are allowed while executing this function.
+
+ Do not leave the receive processor stopped for more than one
+ character time.
+
+ After calling this function a delay of 4 uS is required to ensure
+ that the receive processor is no longer processing this channel.
+*/
+void sStopRxProcessor(CHANNEL_T * ChP)
+{
+ Byte_t R[4];
+
+ R[0] = ChP->R[0];
+ R[1] = ChP->R[1];
+ R[2] = 0x0a;
+ R[3] = ChP->R[3];
+ sOutDW(ChP->IndexAddr, *(DWord_t *) & R[0]);
+}
+
+/***************************************************************************
+Function: sFlushRxFIFO
+Purpose: Flush the Rx FIFO
+Call: sFlushRxFIFO(ChP)
+ CHANNEL_T *ChP; Ptr to channel structure
+Return: void
+Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
+ while it is being flushed the receive processor is stopped
+ and the transmitter is disabled. After these operations a
+ 4 uS delay is done before clearing the pointers to allow
+ the receive processor to stop. These items are handled inside
+ this function.
+Warnings: No context switches are allowed while executing this function.
+*/
+void sFlushRxFIFO(CHANNEL_T * ChP)
+{
+ int i;
+ Byte_t Ch; /* channel number within AIOP */
+ int RxFIFOEnabled; /* TRUE if Rx FIFO enabled */
+
+ if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
+ return; /* don't need to flush */
+
+ RxFIFOEnabled = FALSE;
+ if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
+ RxFIFOEnabled = TRUE;
+ sDisRxFIFO(ChP); /* disable it */
+ for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
+ sInB(ChP->IntChan); /* depends on bus i/o timing */
+ }
+ sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
+ Ch = (Byte_t) sGetChanNum(ChP);
+ sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
+ sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
+ sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
+ sOutW(ChP->IndexData, 0);
+ sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
+ sOutW(ChP->IndexData, 0);
+ if (RxFIFOEnabled)
+ sEnRxFIFO(ChP); /* enable Rx FIFO */
+}
+
+/***************************************************************************
+Function: sFlushTxFIFO
+Purpose: Flush the Tx FIFO
+Call: sFlushTxFIFO(ChP)
+ CHANNEL_T *ChP; Ptr to channel structure
+Return: void
+Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
+ while it is being flushed the receive processor is stopped
+ and the transmitter is disabled. After these operations a
+ 4 uS delay is done before clearing the pointers to allow
+ the receive processor to stop. These items are handled inside
+ this function.
+Warnings: No context switches are allowed while executing this function.
+*/
+void sFlushTxFIFO(CHANNEL_T * ChP)
+{
+ int i;
+ Byte_t Ch; /* channel number within AIOP */
+ int TxEnabled; /* TRUE if transmitter enabled */
+
+ if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
+ return; /* don't need to flush */
+
+ TxEnabled = FALSE;
+ if (ChP->TxControl[3] & TX_ENABLE) {
+ TxEnabled = TRUE;
+ sDisTransmit(ChP); /* disable transmitter */
+ }
+ sStopRxProcessor(ChP); /* stop Rx processor */
+ for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
+ sInB(ChP->IntChan); /* depends on bus i/o timing */
+ Ch = (Byte_t) sGetChanNum(ChP);
+ sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
+ sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
+ sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
+ sOutW(ChP->IndexData, 0);
+ if (TxEnabled)
+ sEnTransmit(ChP); /* enable transmitter */
+ sStartRxProcessor(ChP); /* restart Rx processor */
+}
+
+/***************************************************************************
+Function: sWriteTxPrioByte
+Purpose: Write a byte of priority transmit data to a channel
+Call: sWriteTxPrioByte(ChP,Data)
+ CHANNEL_T *ChP; Ptr to channel structure
+ Byte_t Data; The transmit data byte
+
+Return: int: 1 if the bytes is successfully written, otherwise 0.
+
+Comments: The priority byte is transmitted before any data in the Tx FIFO.
+
+Warnings: No context switches are allowed while executing this function.
+*/
+int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
+{
+ Byte_t DWBuf[4]; /* buffer for double word writes */
+ Word_t *WordPtr; /* must be far because Win SS != DS */
+ register DWordIO_t IndexAddr;
+
+ if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
+ IndexAddr = ChP->IndexAddr;
+ sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
+ if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
+ return (0); /* nothing sent */
+
+ WordPtr = (Word_t *) (&DWBuf[0]);
+ *WordPtr = ChP->TxPrioBuf; /* data byte address */
+
+ DWBuf[2] = Data; /* data byte value */
+ sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
+
+ *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
+
+ DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
+ DWBuf[3] = 0; /* priority buffer pointer */
+ sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
+ } else { /* write it to Tx FIFO */
+
+ sWriteTxByte(sGetTxRxDataIO(ChP), Data);
+ }
+ return (1); /* 1 byte sent */
+}
+
+/***************************************************************************
+Function: sEnInterrupts
+Purpose: Enable one or more interrupts for a channel
+Call: sEnInterrupts(ChP,Flags)
+ CHANNEL_T *ChP; Ptr to channel structure
+ Word_t Flags: Interrupt enable flags, can be any combination
+ of the following flags:
+ TXINT_EN: Interrupt on Tx FIFO empty
+ RXINT_EN: Interrupt on Rx FIFO at trigger level (see
+ sSetRxTrigger())
+ SRCINT_EN: Interrupt on SRC (Special Rx Condition)
+ MCINT_EN: Interrupt on modem input change
+ CHANINT_EN: Allow channel interrupt signal to the AIOP's
+ Interrupt Channel Register.
+Return: void
+Comments: If an interrupt enable flag is set in Flags, that interrupt will be
+ enabled. If an interrupt enable flag is not set in Flags, that
+ interrupt will not be changed. Interrupts can be disabled with
+ function sDisInterrupts().
+
+ This function sets the appropriate bit for the channel in the AIOP's
+ Interrupt Mask Register if the CHANINT_EN flag is set. This allows
+ this channel's bit to be set in the AIOP's Interrupt Channel Register.
+
+ Interrupts must also be globally enabled before channel interrupts
+ will be passed on to the host. This is done with function
+ sEnGlobalInt().
+
+ In some cases it may be desirable to disable interrupts globally but
+ enable channel interrupts. This would allow the global interrupt
+ status register to be used to determine which AIOPs need service.
+*/
+void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
+{
+ Byte_t Mask; /* Interrupt Mask Register */
+
+ ChP->RxControl[2] |=
+ ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
+
+ sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
+
+ ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
+
+ sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
+
+ if (Flags & CHANINT_EN) {
+ Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
+ sOutB(ChP->IntMask, Mask);
+ }
+}
+
+/***************************************************************************
+Function: sDisInterrupts
+Purpose: Disable one or more interrupts for a channel
+Call: sDisInterrupts(ChP,Flags)
+ CHANNEL_T *ChP; Ptr to channel structure
+ Word_t Flags: Interrupt flags, can be any combination
+ of the following flags:
+ TXINT_EN: Interrupt on Tx FIFO empty
+ RXINT_EN: Interrupt on Rx FIFO at trigger level (see
+ sSetRxTrigger())
+ SRCINT_EN: Interrupt on SRC (Special Rx Condition)
+ MCINT_EN: Interrupt on modem input change
+ CHANINT_EN: Disable channel interrupt signal to the
+ AIOP's Interrupt Channel Register.
+Return: void
+Comments: If an interrupt flag is set in Flags, that interrupt will be
+ disabled. If an interrupt flag is not set in Flags, that
+ interrupt will not be changed. Interrupts can be enabled with
+ function sEnInterrupts().
+
+ This function clears the appropriate bit for the channel in the AIOP's
+ Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
+ this channel's bit from being set in the AIOP's Interrupt Channel
+ Register.
+*/
+void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
+{
+ Byte_t Mask; /* Interrupt Mask Register */
+
+ ChP->RxControl[2] &=
+ ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
+ sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
+ ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
+ sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
+
+ if (Flags & CHANINT_EN) {
+ Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
+ sOutB(ChP->IntMask, Mask);
+ }
+}
+
+void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
+{
+ sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
+}
+
+/*
+ * Not an official SSCI function, but how to reset RocketModems.
+ * ISA bus version
+ */
+void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
+{
+ ByteIO_t addr;
+ Byte_t val;
+
+ addr = CtlP->AiopIO[0] + 0x400;
+ val = sInB(CtlP->MReg3IO);
+ /* if AIOP[1] is not enabled, enable it */
+ if ((val & 2) == 0) {
+ val = sInB(CtlP->MReg2IO);
+ sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
+ sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
+ }
+
+ sEnAiop(CtlP, 1);
+ if (!on)
+ addr += 8;
+ sOutB(addr + chan, 0); /* apply or remove reset */
+ sDisAiop(CtlP, 1);
+}
+
+/*
+ * Not an official SSCI function, but how to reset RocketModems.
+ * PCI bus version
+ */
+void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
+{
+ ByteIO_t addr;
+
+ addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
+ if (!on)
+ addr += 8;
+ sOutB(addr + chan, 0); /* apply or remove reset */
+}
+
+/* Resets the speaker controller on RocketModem II and III devices */
+static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
+{
+ ByteIO_t addr;
+
+ /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
+ if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
+ addr = CtlP->AiopIO[0] + 0x4F;
+ sOutB(addr, 0);
+ }
+
+ /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
+ if ((model == MODEL_UPCI_RM3_8PORT)
+ || (model == MODEL_UPCI_RM3_4PORT)) {
+ addr = CtlP->AiopIO[0] + 0x88;
+ sOutB(addr, 0);
+ }
+}
+
+/* Returns the line number given the controller (board), aiop and channel number */
+static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
+{
+ return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
+}
+
+/*
+ * Stores the line number associated with a given controller (board), aiop
+ * and channel number.
+ * Returns: The line number assigned
+ */
+static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
+{
+ lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
+ return (nextLineNumber - 1);
+}
