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path: root/drivers/char/rio/rioparam.c
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Diffstat (limited to 'drivers/char/rio/rioparam.c')
-rw-r--r--drivers/char/rio/rioparam.c744
1 files changed, 744 insertions, 0 deletions
diff --git a/drivers/char/rio/rioparam.c b/drivers/char/rio/rioparam.c
new file mode 100644
index 00000000000..f10916326ec
--- /dev/null
+++ b/drivers/char/rio/rioparam.c
@@ -0,0 +1,744 @@
+/*
+** -----------------------------------------------------------------------------
+**
+** Perle Specialix driver for Linux
+** Ported from existing RIO Driver for SCO sources.
+ *
+ * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
+ *
+ * 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.
+**
+** Module : rioparam.c
+** SID : 1.3
+** Last Modified : 11/6/98 10:33:45
+** Retrieved : 11/6/98 10:33:50
+**
+** ident @(#)rioparam.c 1.3
+**
+** -----------------------------------------------------------------------------
+*/
+
+#ifdef SCCS_LABELS
+static char *_rioparam_c_sccs_ = "@(#)rioparam.c 1.3";
+#endif
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/tty.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/string.h>
+#include <asm/semaphore.h>
+#include <asm/uaccess.h>
+
+#include <linux/termios.h>
+#include <linux/serial.h>
+
+#include <linux/generic_serial.h>
+
+
+#include "linux_compat.h"
+#include "rio_linux.h"
+#include "typdef.h"
+#include "pkt.h"
+#include "daemon.h"
+#include "rio.h"
+#include "riospace.h"
+#include "top.h"
+#include "cmdpkt.h"
+#include "map.h"
+#include "riotypes.h"
+#include "rup.h"
+#include "port.h"
+#include "riodrvr.h"
+#include "rioinfo.h"
+#include "func.h"
+#include "errors.h"
+#include "pci.h"
+
+#include "parmmap.h"
+#include "unixrup.h"
+#include "board.h"
+#include "host.h"
+#include "error.h"
+#include "phb.h"
+#include "link.h"
+#include "cmdblk.h"
+#include "route.h"
+#include "control.h"
+#include "cirrus.h"
+#include "rioioctl.h"
+#include "param.h"
+#include "list.h"
+#include "sam.h"
+
+
+
+/*
+** The Scam, based on email from jeremyr@bugs.specialix.co.uk....
+**
+** To send a command on a particular port, you put a packet with the
+** command bit set onto the port. The command bit is in the len field,
+** and gets ORed in with the actual byte count.
+**
+** When you send a packet with the command bit set, then the first
+** data byte ( data[0] ) is interpretted as the command to execute.
+** It also governs what data structure overlay should accompany the packet.
+** Commands are defined in cirrus/cirrus.h
+**
+** If you want the command to pre-emt data already on the queue for the
+** port, set the pre-emptive bit in conjunction with the command bit.
+** It is not defined what will happen if you set the preemptive bit
+** on a packet that is NOT a command.
+**
+** Pre-emptive commands should be queued at the head of the queue using
+** add_start(), whereas normal commands and data are enqueued using
+** add_end().
+**
+** Most commands do not use the remaining bytes in the data array. The
+** exceptions are OPEN MOPEN and CONFIG. (NB. As with the SI CONFIG and
+** OPEN are currently analagous). With these three commands the following
+** 11 data bytes are all used to pass config information such as baud rate etc.
+** The fields are also defined in cirrus.h. Some contain straightforward
+** information such as the transmit XON character. Two contain the transmit and
+** receive baud rates respectively. For most baud rates there is a direct
+** mapping between the rates defined in <sys/termio.h> and the byte in the
+** packet. There are additional (non UNIX-standard) rates defined in
+** /u/dos/rio/cirrus/h/brates.h.
+**
+** The rest of the data fields contain approximations to the Cirrus registers
+** that are used to program number of bits etc. Each registers bit fields is
+** defined in cirrus.h.
+**
+** NB. Only use those bits that are defined as being driver specific
+** or common to the RTA and the driver.
+**
+** All commands going from RTA->Host will be dealt with by the Host code - you
+** will never see them. As with the SI there will be three fields to look out
+** for in each phb (not yet defined - needs defining a.s.a.p).
+**
+** modem_status - current state of handshake pins.
+**
+** port_status - current port status - equivalent to hi_stat for SI, indicates
+** if port is IDLE_OPEN, IDLE_CLOSED etc.
+**
+** break_status - bit X set if break has been received.
+**
+** Happy hacking.
+**
+*/
+
+/*
+** RIOParam is used to open or configure a port. You pass it a PortP,
+** which will have a tty struct attached to it. You also pass a command,
+** either OPEN or CONFIG. The port's setup is taken from the t_ fields
+** of the tty struct inside the PortP, and the port is either opened
+** or re-configured. You must also tell RIOParam if the device is a modem
+** device or not (i.e. top bit of minor number set or clear - take special
+** care when deciding on this!).
+** RIOParam neither flushes nor waits for drain, and is NOT preemptive.
+**
+** RIOParam assumes it will be called at splrio(), and also assumes
+** that CookMode is set correctly in the port structure.
+**
+** NB. for MPX
+** tty lock must NOT have been previously acquired.
+*/
+int
+RIOParam(PortP, cmd, Modem, SleepFlag)
+struct Port *PortP;
+int cmd;
+int Modem;
+int SleepFlag;
+{
+ register struct tty_struct *TtyP;
+ int retval;
+ register struct phb_param *phb_param_ptr;
+ PKT *PacketP;
+ int res;
+ uchar Cor1=0, Cor2=0, Cor4=0, Cor5=0;
+ uchar TxXon=0, TxXoff=0, RxXon=0, RxXoff=0;
+ uchar LNext=0, TxBaud=0, RxBaud=0;
+ int retries = 0xff;
+ unsigned long flags;
+
+ func_enter ();
+
+ TtyP = PortP->gs.tty;
+
+ rio_dprintk (RIO_DEBUG_PARAM, "RIOParam: Port:%d cmd:%d Modem:%d SleepFlag:%d Mapped: %d, tty=%p\n",
+ PortP->PortNum, cmd, Modem, SleepFlag, PortP->Mapped, TtyP);
+
+ if (!TtyP) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Can't call rioparam with null tty.\n");
+
+ func_exit ();
+
+ return RIO_FAIL;
+ }
+ rio_spin_lock_irqsave(&PortP->portSem, flags );
+
+ if (cmd == OPEN) {
+ /*
+ ** If the port is set to store or lock the parameters, and it is
+ ** paramed with OPEN, we want to restore the saved port termio, but
+ ** only if StoredTermio has been saved, i.e. NOT 1st open after reboot.
+ */
+#if 0
+ if (PortP->FirstOpen) {
+ PortP->StoredTty.iflag = TtyP->tm.c_iflag;
+ PortP->StoredTty.oflag = TtyP->tm.c_oflag;
+ PortP->StoredTty.cflag = TtyP->tm.c_cflag;
+ PortP->StoredTty.lflag = TtyP->tm.c_lflag;
+ PortP->StoredTty.line = TtyP->tm.c_line;
+ for (i = 0; i < NCC + 5; i++)
+ PortP->StoredTty.cc[i] = TtyP->tm.c_cc[i];
+ PortP->FirstOpen = 0;
+ }
+ else if (PortP->Store || PortP->Lock) {
+ rio_dprintk (RIO_DEBUG_PARAM, "OPEN: Restoring stored/locked params\n");
+ TtyP->tm.c_iflag = PortP->StoredTty.iflag;
+ TtyP->tm.c_oflag = PortP->StoredTty.oflag;
+ TtyP->tm.c_cflag = PortP->StoredTty.cflag;
+ TtyP->tm.c_lflag = PortP->StoredTty.lflag;
+ TtyP->tm.c_line = PortP->StoredTty.line;
+ for (i = 0; i < NCC + 5; i++)
+ TtyP->tm.c_cc[i] = PortP->StoredTty.cc[i];
+ }
+#endif
+ }
+
+ /*
+ ** wait for space
+ */
+ while ( !(res=can_add_transmit(&PacketP,PortP)) ||
+ (PortP->InUse != NOT_INUSE) ) {
+ if (retries -- <= 0) {
+ break;
+ }
+ if ( PortP->InUse != NOT_INUSE ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Port IN_USE for pre-emptive command\n");
+ }
+
+ if ( !res ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Port has no space on transmit queue\n");
+ }
+
+ if ( SleepFlag != OK_TO_SLEEP ) {
+ rio_spin_unlock_irqrestore( &PortP->portSem, flags);
+ func_exit();
+
+ return RIO_FAIL;
+ }
+
+ rio_dprintk (RIO_DEBUG_PARAM, "wait for can_add_transmit\n");
+ rio_spin_unlock_irqrestore( &PortP->portSem, flags);
+ retval = RIODelay(PortP, HUNDRED_MS);
+ rio_spin_lock_irqsave( &PortP->portSem, flags);
+ if (retval == RIO_FAIL) {
+ rio_dprintk (RIO_DEBUG_PARAM, "wait for can_add_transmit broken by signal\n");
+ rio_spin_unlock_irqrestore( &PortP->portSem, flags);
+ pseterr(EINTR);
+ func_exit();
+
+ return RIO_FAIL;
+ }
+ if ( PortP->State & RIO_DELETED ) {
+ rio_spin_unlock_irqrestore( &PortP->portSem, flags);
+ func_exit ();
+
+ return RIO_SUCCESS;
+ }
+ }
+
+ if (!res) {
+ rio_spin_unlock_irqrestore( &PortP->portSem, flags);
+ func_exit ();
+
+ return RIO_FAIL;
+ }
+
+ rio_dprintk (RIO_DEBUG_PARAM, "can_add_transmit() returns %x\n",res);
+ rio_dprintk (RIO_DEBUG_PARAM, "Packet is 0x%x\n",(int) PacketP);
+
+ phb_param_ptr = (struct phb_param *)PacketP->data;
+
+
+#if 0
+ /*
+ ** COR 1
+ */
+ if ( TtyP->tm.c_iflag & INPCK ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Parity checking on input enabled\n");
+ Cor1 |= COR1_INPCK;
+ }
+#endif
+
+ switch ( TtyP->termios->c_cflag & CSIZE ) {
+ case CS5:
+ {
+ rio_dprintk (RIO_DEBUG_PARAM, "5 bit data\n");
+ Cor1 |= COR1_5BITS;
+ break;
+ }
+ case CS6:
+ {
+ rio_dprintk (RIO_DEBUG_PARAM, "6 bit data\n");
+ Cor1 |= COR1_6BITS;
+ break;
+ }
+ case CS7:
+ {
+ rio_dprintk (RIO_DEBUG_PARAM, "7 bit data\n");
+ Cor1 |= COR1_7BITS;
+ break;
+ }
+ case CS8:
+ {
+ rio_dprintk (RIO_DEBUG_PARAM, "8 bit data\n");
+ Cor1 |= COR1_8BITS;
+ break;
+ }
+ }
+
+ if ( TtyP->termios->c_cflag & CSTOPB ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "2 stop bits\n");
+ Cor1 |= COR1_2STOP;
+ }
+ else {
+ rio_dprintk (RIO_DEBUG_PARAM, "1 stop bit\n");
+ Cor1 |= COR1_1STOP;
+ }
+
+ if ( TtyP->termios->c_cflag & PARENB ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Enable parity\n");
+ Cor1 |= COR1_NORMAL;
+ }
+ else {
+ rio_dprintk (RIO_DEBUG_PARAM, "Disable parity\n");
+ Cor1 |= COR1_NOP;
+ }
+ if ( TtyP->termios->c_cflag & PARODD ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Odd parity\n");
+ Cor1 |= COR1_ODD;
+ }
+ else {
+ rio_dprintk (RIO_DEBUG_PARAM, "Even parity\n");
+ Cor1 |= COR1_EVEN;
+ }
+
+ /*
+ ** COR 2
+ */
+ if ( TtyP->termios->c_iflag & IXON ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Enable start/stop output control\n");
+ Cor2 |= COR2_IXON;
+ }
+ else {
+ if ( PortP->Config & RIO_IXON ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Force enable start/stop output control\n");
+ Cor2 |= COR2_IXON;
+ }
+ else
+ rio_dprintk (RIO_DEBUG_PARAM, "IXON has been disabled.\n");
+ }
+
+ if (TtyP->termios->c_iflag & IXANY) {
+ if ( PortP->Config & RIO_IXANY ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Enable any key to restart output\n");
+ Cor2 |= COR2_IXANY;
+ }
+ else
+ rio_dprintk (RIO_DEBUG_PARAM, "IXANY has been disabled due to sanity reasons.\n");
+ }
+
+ if ( TtyP->termios->c_iflag & IXOFF ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Enable start/stop input control 2\n");
+ Cor2 |= COR2_IXOFF;
+ }
+
+ if ( TtyP->termios->c_cflag & HUPCL ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Hangup on last close\n");
+ Cor2 |= COR2_HUPCL;
+ }
+
+ if ( C_CRTSCTS (TtyP)) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Rx hardware flow control enabled\n");
+ Cor2 |= COR2_CTSFLOW;
+ Cor2 |= COR2_RTSFLOW;
+ } else {
+ rio_dprintk (RIO_DEBUG_PARAM, "Rx hardware flow control disabled\n");
+ Cor2 &= ~COR2_CTSFLOW;
+ Cor2 &= ~COR2_RTSFLOW;
+ }
+
+
+ if ( TtyP->termios->c_cflag & CLOCAL ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Local line\n");
+ }
+ else {
+ rio_dprintk (RIO_DEBUG_PARAM, "Possible Modem line\n");
+ }
+
+ /*
+ ** COR 4 (there is no COR 3)
+ */
+ if ( TtyP->termios->c_iflag & IGNBRK ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Ignore break condition\n");
+ Cor4 |= COR4_IGNBRK;
+ }
+ if ( !(TtyP->termios->c_iflag & BRKINT) ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Break generates NULL condition\n");
+ Cor4 |= COR4_NBRKINT;
+ } else {
+ rio_dprintk (RIO_DEBUG_PARAM, "Interrupt on break condition\n");
+ }
+
+ if ( TtyP->termios->c_iflag & INLCR ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Map newline to carriage return on input\n");
+ Cor4 |= COR4_INLCR;
+ }
+
+ if ( TtyP->termios->c_iflag & IGNCR ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Ignore carriage return on input\n");
+ Cor4 |= COR4_IGNCR;
+ }
+
+ if ( TtyP->termios->c_iflag & ICRNL ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Map carriage return to newline on input\n");
+ Cor4 |= COR4_ICRNL;
+ }
+ if ( TtyP->termios->c_iflag & IGNPAR ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Ignore characters with parity errors\n");
+ Cor4 |= COR4_IGNPAR;
+ }
+ if ( TtyP->termios->c_iflag & PARMRK ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Mark parity errors\n");
+ Cor4 |= COR4_PARMRK;
+ }
+
+ /*
+ ** Set the RAISEMOD flag to ensure that the modem lines are raised
+ ** on reception of a config packet.
+ ** The download code handles the zero baud condition.
+ */
+ Cor4 |= COR4_RAISEMOD;
+
+ /*
+ ** COR 5
+ */
+
+ Cor5 = COR5_CMOE;
+
+ /*
+ ** Set to monitor tbusy/tstop (or not).
+ */
+
+ if (PortP->MonitorTstate)
+ Cor5 |= COR5_TSTATE_ON;
+ else
+ Cor5 |= COR5_TSTATE_OFF;
+
+ /*
+ ** Could set LNE here if you wanted LNext processing. SVR4 will use it.
+ */
+ if ( TtyP->termios->c_iflag & ISTRIP ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Strip input characters\n");
+ if (! (PortP->State & RIO_TRIAD_MODE)) {
+ Cor5 |= COR5_ISTRIP;
+ }
+ }
+
+ if ( TtyP->termios->c_oflag & ONLCR ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Map newline to carriage-return, newline on output\n");
+ if ( PortP->CookMode == COOK_MEDIUM )
+ Cor5 |= COR5_ONLCR;
+ }
+ if ( TtyP->termios->c_oflag & OCRNL ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Map carriage return to newline on output\n");
+ if ( PortP->CookMode == COOK_MEDIUM )
+ Cor5 |= COR5_OCRNL;
+ }
+ if ( ( TtyP->termios->c_oflag & TABDLY) == TAB3 ) {
+ rio_dprintk (RIO_DEBUG_PARAM, "Tab delay 3 set\n");
+ if ( PortP->CookMode == COOK_MEDIUM )
+ Cor5 |= COR5_TAB3;
+ }
+
+ /*
+ ** Flow control bytes.
+ */
+ TxXon = TtyP->termios->c_cc[VSTART];
+ TxXoff = TtyP->termios->c_cc[VSTOP];
+ RxXon = TtyP->termios->c_cc[VSTART];
+ RxXoff = TtyP->termios->c_cc[VSTOP];
+ /*
+ ** LNEXT byte
+ */
+ LNext = 0;
+
+ /*
+ ** Baud rate bytes
+ */
+ rio_dprintk (RIO_DEBUG_PARAM, "Mapping of rx/tx baud %x (%x)\n",
+ TtyP->termios->c_cflag, CBAUD);
+
+ switch (TtyP->termios->c_cflag & CBAUD) {
+#define e(b) case B ## b : RxBaud = TxBaud = RIO_B ## b ;break
+ e(50);e(75);e(110);e(134);e(150);e(200);e(300);e(600);e(1200);
+ e(1800);e(2400);e(4800);e(9600);e(19200);e(38400);e(57600);
+ e(115200); /* e(230400);e(460800); e(921600); */
+ }
+
+ /* XXX MIssing conversion table. XXX */
+ /* (TtyP->termios->c_cflag & V_CBAUD); */
+
+ rio_dprintk (RIO_DEBUG_PARAM, "tx baud 0x%x, rx baud 0x%x\n", TxBaud, RxBaud);
+
+
+ /*
+ ** Leftovers
+ */
+ if ( TtyP->termios->c_cflag & CREAD )
+ rio_dprintk (RIO_DEBUG_PARAM, "Enable receiver\n");
+#ifdef RCV1EN
+ if ( TtyP->termios->c_cflag & RCV1EN )
+ rio_dprintk (RIO_DEBUG_PARAM, "RCV1EN (?)\n");
+#endif
+#ifdef XMT1EN
+ if ( TtyP->termios->c_cflag & XMT1EN )
+ rio_dprintk (RIO_DEBUG_PARAM, "XMT1EN (?)\n");
+#endif
+#if 0
+ if ( TtyP->termios->c_cflag & LOBLK )
+ rio_dprintk (RIO_DEBUG_PARAM, "LOBLK - JCL output blocks when not current\n");
+#endif
+ if ( TtyP->termios->c_lflag & ISIG )
+ rio_dprintk (RIO_DEBUG_PARAM, "Input character signal generating enabled\n");
+ if ( TtyP->termios->c_lflag & ICANON )
+ rio_dprintk (RIO_DEBUG_PARAM, "Canonical input: erase and kill enabled\n");
+ if ( TtyP->termios->c_lflag & XCASE )
+ rio_dprintk (RIO_DEBUG_PARAM, "Canonical upper/lower presentation\n");
+ if ( TtyP->termios->c_lflag & ECHO )
+ rio_dprintk (RIO_DEBUG_PARAM, "Enable input echo\n");
+ if ( TtyP->termios->c_lflag & ECHOE )
+ rio_dprintk (RIO_DEBUG_PARAM, "Enable echo erase\n");
+ if ( TtyP->termios->c_lflag & ECHOK )
+ rio_dprintk (RIO_DEBUG_PARAM, "Enable echo kill\n");
+ if ( TtyP->termios->c_lflag & ECHONL )
+ rio_dprintk (RIO_DEBUG_PARAM, "Enable echo newline\n");
+ if ( TtyP->termios->c_lflag & NOFLSH )
+ rio_dprintk (RIO_DEBUG_PARAM, "Disable flush after interrupt or quit\n");
+#ifdef TOSTOP
+ if ( TtyP->termios->c_lflag & TOSTOP )
+ rio_dprintk (RIO_DEBUG_PARAM, "Send SIGTTOU for background output\n");
+#endif
+#ifdef XCLUDE
+ if ( TtyP->termios->c_lflag & XCLUDE )
+ rio_dprintk (RIO_DEBUG_PARAM, "Exclusive use of this line\n");
+#endif
+ if ( TtyP->termios->c_iflag & IUCLC )
+ rio_dprintk (RIO_DEBUG_PARAM, "Map uppercase to lowercase on input\n");
+ if ( TtyP->termios->c_oflag & OPOST )
+ rio_dprintk (RIO_DEBUG_PARAM, "Enable output post-processing\n");
+ if ( TtyP->termios->c_oflag & OLCUC )
+ rio_dprintk (RIO_DEBUG_PARAM, "Map lowercase to uppercase on output\n");
+ if ( TtyP->termios->c_oflag & ONOCR )
+ rio_dprintk (RIO_DEBUG_PARAM, "No carriage return output at column 0\n");
+ if ( TtyP->termios->c_oflag & ONLRET )
+ rio_dprintk (RIO_DEBUG_PARAM, "Newline performs carriage return function\n");
+ if ( TtyP->termios->c_oflag & OFILL )
+ rio_dprintk (RIO_DEBUG_PARAM, "Use fill characters for delay\n");
+ if ( TtyP->termios->c_oflag & OFDEL )
+ rio_dprintk (RIO_DEBUG_PARAM, "Fill character is DEL\n");
+ if ( TtyP->termios->c_oflag & NLDLY )
+ rio_dprintk (RIO_DEBUG_PARAM, "Newline delay set\n");
+ if ( TtyP->termios->c_oflag & CRDLY )
+ rio_dprintk (RIO_DEBUG_PARAM, "Carriage return delay set\n");
+ if ( TtyP->termios->c_oflag & TABDLY )
+ rio_dprintk (RIO_DEBUG_PARAM, "Tab delay set\n");
+#if 0
+ if ( TtyP->termios->c_oflag & BSDLY )
+ rio_dprintk (RIO_DEBUG_PARAM, "Back-space delay set\n");
+ if ( TtyP->termios->c_oflag & VTDLY )
+ rio_dprintk (RIO_DEBUG_PARAM, "Vertical tab delay set\n");
+ if ( TtyP->termios->c_oflag & FFDLY )
+ rio_dprintk (RIO_DEBUG_PARAM, "Form-feed delay set\n");
+#endif
+ /*
+ ** These things are kind of useful in a later life!
+ */
+ PortP->Cor2Copy = Cor2;
+
+ if ( PortP->State & RIO_DELETED ) {
+ rio_spin_unlock_irqrestore( &PortP->portSem, flags);
+ func_exit ();
+
+ return RIO_FAIL;
+ }
+
+ /*
+ ** Actually write the info into the packet to be sent
+ */
+ WBYTE(phb_param_ptr->Cmd, cmd);
+ WBYTE(phb_param_ptr->Cor1, Cor1);
+ WBYTE(phb_param_ptr->Cor2, Cor2);
+ WBYTE(phb_param_ptr->Cor4, Cor4);
+ WBYTE(phb_param_ptr->Cor5, Cor5);
+ WBYTE(phb_param_ptr->TxXon, TxXon);
+ WBYTE(phb_param_ptr->RxXon, RxXon);
+ WBYTE(phb_param_ptr->TxXoff, TxXoff);
+ WBYTE(phb_param_ptr->RxXoff, RxXoff);
+ WBYTE(phb_param_ptr->LNext, LNext);
+ WBYTE(phb_param_ptr->TxBaud, TxBaud);
+ WBYTE(phb_param_ptr->RxBaud, RxBaud);
+
+ /*
+ ** Set the length/command field
+ */
+ WBYTE(PacketP->len , 12 | PKT_CMD_BIT);
+
+ /*
+ ** The packet is formed - now, whack it off
+ ** to its final destination:
+ */
+ add_transmit(PortP);
+ /*
+ ** Count characters transmitted for port statistics reporting
+ */
+ if (PortP->statsGather)
+ PortP->txchars += 12;
+
+ rio_spin_unlock_irqrestore( &PortP->portSem, flags);
+
+ rio_dprintk (RIO_DEBUG_PARAM, "add_transmit returned.\n");
+ /*
+ ** job done.
+ */
+ func_exit ();
+
+ return RIO_SUCCESS;
+}
+
+
+/*
+** We can add another packet to a transmit queue if the packet pointer pointed
+** to by the TxAdd pointer has PKT_IN_USE clear in its address.
+*/
+int
+can_add_transmit(PktP, PortP)
+PKT **PktP;
+struct Port *PortP;
+{
+ register PKT *tp;
+
+ *PktP = tp = (PKT *)RIO_PTR(PortP->Caddr,RWORD(*PortP->TxAdd));
+
+ return !((uint)tp & PKT_IN_USE);
+}
+
+/*
+** To add a packet to the queue, you set the PKT_IN_USE bit in the address,
+** and then move the TxAdd pointer along one position to point to the next
+** packet pointer. You must wrap the pointer from the end back to the start.
+*/
+void
+add_transmit(PortP)
+struct Port *PortP;
+{
+ if (RWORD(*PortP->TxAdd) & PKT_IN_USE) {
+ rio_dprintk (RIO_DEBUG_PARAM, "add_transmit: Packet has been stolen!");
+ }
+ WWORD( *(ushort *)PortP->TxAdd, RWORD(*PortP->TxAdd) | PKT_IN_USE);
+ PortP->TxAdd = (PortP->TxAdd == PortP->TxEnd) ? PortP->TxStart :
+ PortP->TxAdd + 1;
+ WWORD( PortP->PhbP->tx_add , RIO_OFF(PortP->Caddr,PortP->TxAdd) );
+}
+
+/****************************************
+ * Put a packet onto the end of the
+ * free list
+ ****************************************/
+void
+put_free_end(HostP, PktP)
+struct Host *HostP;
+PKT *PktP;
+{
+ FREE_LIST *tmp_pointer;
+ ushort old_end, new_end;
+ unsigned long flags;
+
+ rio_spin_lock_irqsave(&HostP->HostLock, flags);
+
+ /*************************************************
+ * Put a packet back onto the back of the free list
+ *
+ ************************************************/
+
+ rio_dprintk (RIO_DEBUG_PFE, "put_free_end(PktP=%x)\n",(int)PktP);
+
+ if ((old_end=RWORD(HostP->ParmMapP->free_list_end)) != TPNULL) {
+ new_end = RIO_OFF(HostP->Caddr,PktP);
+ tmp_pointer = (FREE_LIST *)RIO_PTR(HostP->Caddr,old_end);
+ WWORD(tmp_pointer->next , new_end );
+ WWORD(((FREE_LIST *)PktP)->prev , old_end);
+ WWORD(((FREE_LIST *)PktP)->next , TPNULL);
+ WWORD(HostP->ParmMapP->free_list_end, new_end);
+ }
+ else { /* First packet on the free list this should never happen! */
+ rio_dprintk (RIO_DEBUG_PFE, "put_free_end(): This should never happen\n");
+ WWORD(HostP->ParmMapP->free_list_end , RIO_OFF(HostP->Caddr,PktP));
+ tmp_pointer = (FREE_LIST *)PktP;
+ WWORD(tmp_pointer->prev , TPNULL);
+ WWORD(tmp_pointer->next , TPNULL);
+ }
+ rio_dprintk (RIO_DEBUG_CMD, "Before unlock: %p\n", &HostP->HostLock);
+ rio_spin_unlock_irqrestore(&HostP->HostLock, flags);
+}
+
+/*
+** can_remove_receive(PktP,P) returns non-zero if PKT_IN_USE is set
+** for the next packet on the queue. It will also set PktP to point to the
+** relevant packet, [having cleared the PKT_IN_USE bit]. If PKT_IN_USE is clear,
+** then can_remove_receive() returns 0.
+*/
+int
+can_remove_receive(PktP, PortP)
+PKT **PktP;
+struct Port *PortP;
+{
+ if ( RWORD(*PortP->RxRemove) & PKT_IN_USE) {
+ *PktP = (PKT *)RIO_PTR(PortP->Caddr,
+ RWORD(*PortP->RxRemove) & ~PKT_IN_USE);
+ return 1;
+ }
+ return 0;
+}
+
+/*
+** To remove a packet from the receive queue you clear its PKT_IN_USE bit,
+** and then bump the pointers. Once the pointers get to the end, they must
+** be wrapped back to the start.
+*/
+void
+remove_receive(PortP)
+struct Port *PortP;
+{
+ WWORD( *PortP->RxRemove, RWORD(*PortP->RxRemove) & ~PKT_IN_USE );
+ PortP->RxRemove = (PortP->RxRemove == PortP->RxEnd) ? PortP->RxStart :
+ PortP->RxRemove + 1;
+ WWORD( PortP->PhbP->rx_remove , RIO_OFF(PortP->Caddr, PortP->RxRemove) );
+}