Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 3027 insertions, 0 deletions

diff --git a/drivers/serial/68360serial.c b/drivers/serial/68360serial.c
new file mode 100644
index 00000000000..f148022b6b4
--- /dev/null
+++ b/drivers/serial/68360serial.c
@@ -0,0 +1,3027 @@
+/*
+ *  UART driver for 68360 CPM SCC or SMC
+ *  Copyright (c) 2000 D. Jeff Dionne <jeff@uclinux.org>,
+ *  Copyright (c) 2000 Michael Leslie <mleslie@lineo.ca>
+ *  Copyright (c) 1997 Dan Malek <dmalek@jlc.net>
+ *
+ * I used the serial.c driver as the framework for this driver.
+ * Give credit to those guys.
+ * The original code was written for the MBX860 board.  I tried to make
+ * it generic, but there may be some assumptions in the structures that
+ * have to be fixed later.
+ * To save porting time, I did not bother to change any object names
+ * that are not accessed outside of this file.
+ * It still needs lots of work........When it was easy, I included code
+ * to support the SCCs, but this has never been tested, nor is it complete.
+ * Only the SCCs support modem control, so that is not complete either.
+ *
+ * This module exports the following rs232 io functions:
+ *
+ *	int rs_360_init(void);
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/serial.h>
+#include <linux/serialP.h> 
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <asm/irq.h>
+#include <asm/m68360.h>
+#include <asm/commproc.h>
+
+ 
+#ifdef CONFIG_KGDB
+extern void breakpoint(void);
+extern void set_debug_traps(void);
+extern int  kgdb_output_string (const char* s, unsigned int count);
+#endif
+
+
+/* #ifdef CONFIG_SERIAL_CONSOLE */ /* This seems to be a post 2.0 thing - mles */
+#include <linux/console.h>
+
+/* this defines the index into rs_table for the port to use
+ */
+#ifndef CONFIG_SERIAL_CONSOLE_PORT
+#define CONFIG_SERIAL_CONSOLE_PORT	1 /* ie SMC2 - note USE_SMC2 must be defined */
+#endif
+/* #endif */
+
+#if 0
+/* SCC2 for console
+ */
+#undef CONFIG_SERIAL_CONSOLE_PORT
+#define CONFIG_SERIAL_CONSOLE_PORT	2
+#endif
+
+
+#define TX_WAKEUP	ASYNC_SHARE_IRQ
+
+static char *serial_name = "CPM UART driver";
+static char *serial_version = "0.03";
+
+static struct tty_driver *serial_driver;
+int serial_console_setup(struct console *co, char *options);
+
+/*
+ * Serial driver configuration section.  Here are the various options:
+ */
+#define SERIAL_PARANOIA_CHECK
+#define CONFIG_SERIAL_NOPAUSE_IO
+#define SERIAL_DO_RESTART
+
+/* Set of debugging defines */
+
+#undef SERIAL_DEBUG_INTR
+#undef SERIAL_DEBUG_OPEN
+#undef SERIAL_DEBUG_FLOW
+#undef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
+
+#define _INLINE_ inline
+  
+#define DBG_CNT(s)
+
+/* We overload some of the items in the data structure to meet our
+ * needs.  For example, the port address is the CPM parameter ram
+ * offset for the SCC or SMC.  The maximum number of ports is 4 SCCs and
+ * 2 SMCs.  The "hub6" field is used to indicate the channel number, with
+ * a flag indicating SCC or SMC, and the number is used as an index into
+ * the CPM parameter area for this device.
+ * The "type" field is currently set to 0, for PORT_UNKNOWN.  It is
+ * not currently used.  I should probably use it to indicate the port
+ * type of SMC or SCC.
+ * The SMCs do not support any modem control signals.
+ */
+#define smc_scc_num	hub6
+#define NUM_IS_SCC	((int)0x00010000)
+#define PORT_NUM(P)	((P) & 0x0000ffff)
+
+
+#if defined (CONFIG_UCQUICC)
+
+volatile extern void *_periph_base;
+/* sipex transceiver
+ *   mode bits for       are on pins
+ *
+ *    SCC2                d16..19
+ *    SCC3                d20..23
+ *    SCC4                d24..27
+ */
+#define SIPEX_MODE(n,m) ((m & 0x0f)<<(16+4*(n-1)))
+
+static uint sipex_mode_bits = 0x00000000;
+
+#endif
+
+/* There is no `serial_state' defined back here in 2.0.
+ * Try to get by with serial_struct
+ */
+/* #define serial_state serial_struct */
+
+/* 2.4 -> 2.0 portability problem: async_icount in 2.4 has a few
+ * extras: */
+
+#if 0
+struct async_icount_24 {
+	__u32   cts, dsr, rng, dcd, tx, rx;
+	__u32   frame, parity, overrun, brk;
+	__u32   buf_overrun;
+} icount;
+#endif
+
+#if 0
+
+struct serial_state {
+        int     magic;
+        int     baud_base;
+        unsigned long   port;
+        int     irq;
+        int     flags;
+        int     hub6;
+        int     type;
+        int     line;
+        int     revision;       /* Chip revision (950) */
+        int     xmit_fifo_size;
+        int     custom_divisor;
+        int     count;
+        u8      *iomem_base;
+        u16     iomem_reg_shift;
+        unsigned short  close_delay;
+        unsigned short  closing_wait; /* time to wait before closing */
+        struct async_icount_24     icount; 
+        int     io_type;
+        struct async_struct *info;
+};
+#endif
+
+#define SSTATE_MAGIC 0x5302
+
+
+
+/* SMC2 is sometimes used for low performance TDM interfaces.  Define
+ * this as 1 if you want SMC2 as a serial port UART managed by this driver.
+ * Define this as 0 if you wish to use SMC2 for something else.
+ */
+#define USE_SMC2 1
+
+#if 0
+/* Define SCC to ttySx mapping. */
+#define SCC_NUM_BASE	(USE_SMC2 + 1)	/* SCC base tty "number" */
+
+/* Define which SCC is the first one to use for a serial port.  These
+ * are 0-based numbers, i.e. this assumes the first SCC (SCC1) is used
+ * for Ethernet, and the first available SCC for serial UART is SCC2.
+ * NOTE:  IF YOU CHANGE THIS, you have to change the PROFF_xxx and
+ * interrupt vectors in the table below to match.
+ */
+#define SCC_IDX_BASE	1	/* table index */
+#endif
+
+
+/* Processors other than the 860 only get SMCs configured by default.
+ * Either they don't have SCCs or they are allocated somewhere else.
+ * Of course, there are now 860s without some SCCs, so we will need to
+ * address that someday.
+ * The Embedded Planet Multimedia I/O cards use TDM interfaces to the
+ * stereo codec parts, and we use SMC2 to help support that.
+ */
+static struct serial_state rs_table[] = {
+/*  type   line   PORT           IRQ       FLAGS  smc_scc_num (F.K.A. hub6) */
+	{  0,     0, PRSLOT_SMC1, CPMVEC_SMC1,   0,    0 }    /* SMC1 ttyS0 */
+#if USE_SMC2
+	,{ 0,     0, PRSLOT_SMC2, CPMVEC_SMC2,   0,    1 }     /* SMC2 ttyS1 */
+#endif
+
+#if defined(CONFIG_SERIAL_68360_SCC)
+	,{ 0,     0, PRSLOT_SCC2, CPMVEC_SCC2,   0, (NUM_IS_SCC | 1) }    /* SCC2 ttyS2 */
+	,{ 0,     0, PRSLOT_SCC3, CPMVEC_SCC3,   0, (NUM_IS_SCC | 2) }    /* SCC3 ttyS3 */
+	,{ 0,     0, PRSLOT_SCC4, CPMVEC_SCC4,   0, (NUM_IS_SCC | 3) }    /* SCC4 ttyS4 */
+#endif
+};
+
+#define NR_PORTS	(sizeof(rs_table)/sizeof(struct serial_state))
+
+/* The number of buffer descriptors and their sizes.
+ */
+#define RX_NUM_FIFO	4
+#define RX_BUF_SIZE	32
+#define TX_NUM_FIFO	4
+#define TX_BUF_SIZE	32
+
+#define CONSOLE_NUM_FIFO 2
+#define CONSOLE_BUF_SIZE 4
+
+char *console_fifos[CONSOLE_NUM_FIFO * CONSOLE_BUF_SIZE];
+
+/* The async_struct in serial.h does not really give us what we
+ * need, so define our own here.
+ */
+typedef struct serial_info {
+	int			magic;
+	int			flags;
+
+	struct serial_state	*state;
+ 	/* struct serial_struct	*state; */
+ 	/* struct async_struct	*state; */
+	
+	struct tty_struct 	*tty;
+	int			read_status_mask;
+	int			ignore_status_mask;
+	int			timeout;
+	int			line;
+	int			x_char;	/* xon/xoff character */
+	int			close_delay;
+	unsigned short		closing_wait;
+	unsigned short		closing_wait2;
+	unsigned long		event;
+	unsigned long		last_active;
+	int			blocked_open; /* # of blocked opens */
+	struct work_struct	tqueue;
+	struct work_struct	tqueue_hangup;
+ 	wait_queue_head_t	open_wait; 
+ 	wait_queue_head_t	close_wait; 
+
+	
+/* CPM Buffer Descriptor pointers.
+	*/
+	QUICC_BD			*rx_bd_base;
+	QUICC_BD			*rx_cur;
+	QUICC_BD			*tx_bd_base;
+	QUICC_BD			*tx_cur;
+} ser_info_t;
+
+
+/* since kmalloc_init() does not get called until much after this initialization: */
+static ser_info_t  quicc_ser_info[NR_PORTS];
+static char rx_buf_pool[NR_PORTS * RX_NUM_FIFO * RX_BUF_SIZE];
+static char tx_buf_pool[NR_PORTS * TX_NUM_FIFO * TX_BUF_SIZE];
+
+static void change_speed(ser_info_t *info);
+static void rs_360_wait_until_sent(struct tty_struct *tty, int timeout);
+
+static inline int serial_paranoia_check(ser_info_t *info,
+					char *name, const char *routine)
+{
+#ifdef SERIAL_PARANOIA_CHECK
+	static const char *badmagic =
+		"Warning: bad magic number for serial struct (%s) in %s\n";
+	static const char *badinfo =
+		"Warning: null async_struct for (%s) in %s\n";
+
+	if (!info) {
+		printk(badinfo, name, routine);
+		return 1;
+	}
+	if (info->magic != SERIAL_MAGIC) {
+		printk(badmagic, name, routine);
+		return 1;
+	}
+#endif
+	return 0;
+}
+
+/*
+ * This is used to figure out the divisor speeds and the timeouts,
+ * indexed by the termio value.  The generic CPM functions are responsible
+ * for setting and assigning baud rate generators for us.
+ */
+static int baud_table[] = {
+	0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
+	9600, 19200, 38400, 57600, 115200, 230400, 460800, 0 };
+
+/* This sucks. There is a better way: */
+#if defined(CONFIG_CONSOLE_9600)
+  #define CONSOLE_BAUDRATE 9600
+#elif defined(CONFIG_CONSOLE_19200)
+  #define CONSOLE_BAUDRATE 19200
+#elif defined(CONFIG_CONSOLE_115200)
+  #define CONSOLE_BAUDRATE 115200
+#else
+  #warning "console baud rate undefined"
+  #define CONSOLE_BAUDRATE 9600
+#endif
+
+/*
+ * ------------------------------------------------------------
+ * rs_stop() and rs_start()
+ *
+ * This routines are called before setting or resetting tty->stopped.
+ * They enable or disable transmitter interrupts, as necessary.
+ * ------------------------------------------------------------
+ */
+static void rs_360_stop(struct tty_struct *tty)
+{
+	ser_info_t *info = (ser_info_t *)tty->driver_data;
+	int	idx;
+	unsigned long flags;
+ 	volatile struct scc_regs *sccp;
+ 	volatile struct smc_regs *smcp;
+
+	if (serial_paranoia_check(info, tty->name, "rs_stop"))
+		return;
+	
+	local_irq_save(flags);
+	idx = PORT_NUM(info->state->smc_scc_num);
+	if (info->state->smc_scc_num & NUM_IS_SCC) {
+		sccp = &pquicc->scc_regs[idx];
+		sccp->scc_sccm &= ~UART_SCCM_TX;
+	} else {
+		/* smcp = &cpmp->cp_smc[idx]; */
+		smcp = &pquicc->smc_regs[idx];
+		smcp->smc_smcm &= ~SMCM_TX;
+	}
+	local_irq_restore(flags);
+}
+
+
+static void rs_360_start(struct tty_struct *tty)
+{
+	ser_info_t *info = (ser_info_t *)tty->driver_data;
+	int	idx;
+	unsigned long flags;
+	volatile struct scc_regs *sccp;
+	volatile struct smc_regs *smcp;
+
+	if (serial_paranoia_check(info, tty->name, "rs_stop"))
+		return;
+	
+	local_irq_save(flags);
+	idx = PORT_NUM(info->state->smc_scc_num);
+	if (info->state->smc_scc_num & NUM_IS_SCC) {
+		sccp = &pquicc->scc_regs[idx];
+		sccp->scc_sccm |= UART_SCCM_TX;
+	} else {
+		smcp = &pquicc->smc_regs[idx];
+		smcp->smc_smcm |= SMCM_TX;
+	}
+	local_irq_restore(flags);
+}
+
+/*
+ * ----------------------------------------------------------------------
+ *
+ * Here starts the interrupt handling routines.  All of the following
+ * subroutines are declared as inline and are folded into
+ * rs_interrupt().  They were separated out for readability's sake.
+ *
+ * Note: rs_interrupt() is a "fast" interrupt, which means that it
+ * runs with interrupts turned off.  People who may want to modify
+ * rs_interrupt() should try to keep the interrupt handler as fast as
+ * possible.  After you are done making modifications, it is not a bad
+ * idea to do:
+ * 
+ * gcc -S -DKERNEL -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer serial.c
+ *
+ * and look at the resulting assemble code in serial.s.
+ *
+ * 				- Ted Ts'o (tytso@mit.edu), 7-Mar-93
+ * -----------------------------------------------------------------------
+ */
+
+static _INLINE_ void receive_chars(ser_info_t *info)
+{
+	struct tty_struct *tty = info->tty;
+	unsigned char ch, *cp;
+	/*int	ignored = 0;*/
+	int	i;
+	ushort	status;
+	 struct	async_icount *icount; 
+	/* struct	async_icount_24 *icount; */
+	volatile QUICC_BD	*bdp;
+
+	icount = &info->state->icount;
+
+	/* Just loop through the closed BDs and copy the characters into
+	 * the buffer.
+	 */
+	bdp = info->rx_cur;
+	for (;;) {
+		if (bdp->status & BD_SC_EMPTY)	/* If this one is empty */
+			break;			/*   we are all done */
+
+		/* The read status mask tell us what we should do with
+		 * incoming characters, especially if errors occur.
+		 * One special case is the use of BD_SC_EMPTY.  If
+		 * this is not set, we are supposed to be ignoring
+		 * inputs.  In this case, just mark the buffer empty and
+		 * continue.
+		 */
+		if (!(info->read_status_mask & BD_SC_EMPTY)) {
+			bdp->status |= BD_SC_EMPTY;
+			bdp->status &=
+				~(BD_SC_BR | BD_SC_FR | BD_SC_PR | BD_SC_OV);
+
+			if (bdp->status & BD_SC_WRAP)
+				bdp = info->rx_bd_base;
+			else
+				bdp++;
+			continue;
+		}
+
+		/* Get the number of characters and the buffer pointer.
+		*/
+		i = bdp->length;
+		/* cp = (unsigned char *)__va(bdp->buf); */
+		cp = (char *)bdp->buf;
+		status = bdp->status;
+
+		/* Check to see if there is room in the tty buffer for
+		 * the characters in our BD buffer.  If not, we exit
+		 * now, leaving the BD with the characters.  We'll pick
+		 * them up again on the next receive interrupt (which could
+		 * be a timeout).
+		 */
+		if ((tty->flip.count + i) >= TTY_FLIPBUF_SIZE)
+			break;
+
+		while (i-- > 0) {
+			ch = *cp++;
+			*tty->flip.char_buf_ptr = ch;
+			icount->rx++;
+
+#ifdef SERIAL_DEBUG_INTR
+			printk("DR%02x:%02x...", ch, status);
+#endif
+			*tty->flip.flag_buf_ptr = 0;
+			if (status & (BD_SC_BR | BD_SC_FR |
+				       BD_SC_PR | BD_SC_OV)) {
+				/*
+				 * For statistics only
+				 */
+				if (status & BD_SC_BR)
+					icount->brk++;
+				else if (status & BD_SC_PR)
+					icount->parity++;
+				else if (status & BD_SC_FR)
+					icount->frame++;
+				if (status & BD_SC_OV)
+					icount->overrun++;
+
+				/*
+				 * Now check to see if character should be
+				 * ignored, and mask off conditions which
+				 * should be ignored.
+				if (status & info->ignore_status_mask) {
+					if (++ignored > 100)
+						break;
+					continue;
+				}
+				 */
+				status &= info->read_status_mask;
+		
+				if (status & (BD_SC_BR)) {
+#ifdef SERIAL_DEBUG_INTR
+					printk("handling break....");
+#endif
+					*tty->flip.flag_buf_ptr = TTY_BREAK;
+					if (info->flags & ASYNC_SAK)
+						do_SAK(tty);
+				} else if (status & BD_SC_PR)
+					*tty->flip.flag_buf_ptr = TTY_PARITY;
+				else if (status & BD_SC_FR)
+					*tty->flip.flag_buf_ptr = TTY_FRAME;
+				if (status & BD_SC_OV) {
+					/*
+					 * Overrun is special, since it's
+					 * reported immediately, and doesn't
+					 * affect the current character
+					 */
+					if (tty->flip.count < TTY_FLIPBUF_SIZE) {
+						tty->flip.count++;
+						tty->flip.flag_buf_ptr++;
+						tty->flip.char_buf_ptr++;
+						*tty->flip.flag_buf_ptr =
+								TTY_OVERRUN;
+					}
+				}
+			}
+			if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+				break;
+
+			tty->flip.flag_buf_ptr++;
+			tty->flip.char_buf_ptr++;
+			tty->flip.count++;
+		}
+
+		/* This BD is ready to be used again.  Clear status.
+		 * Get next BD.
+		 */
+		bdp->status |= BD_SC_EMPTY;
+		bdp->status &= ~(BD_SC_BR | BD_SC_FR | BD_SC_PR | BD_SC_OV);
+
+		if (bdp->status & BD_SC_WRAP)
+			bdp = info->rx_bd_base;
+		else
+			bdp++;
+	}
+
+	info->rx_cur = (QUICC_BD *)bdp;
+
+	schedule_work(&tty->flip.work);
+}
+
+static _INLINE_ void receive_break(ser_info_t *info)
+{
+	struct tty_struct *tty = info->tty;
+
+	info->state->icount.brk++;
+	/* Check to see if there is room in the tty buffer for
+	 * the break.  If not, we exit now, losing the break.  FIXME
+	 */
+	if ((tty->flip.count + 1) >= TTY_FLIPBUF_SIZE)
+		return;
+	*(tty->flip.flag_buf_ptr++) = TTY_BREAK;
+	*(tty->flip.char_buf_ptr++) = 0;
+	tty->flip.count++;
+
+	schedule_work(&tty->flip.work);
+}
+
+static _INLINE_ void transmit_chars(ser_info_t *info)
+{
+
+	if ((info->flags & TX_WAKEUP) ||
+	    (info->tty->flags & (1 << TTY_DO_WRITE_WAKEUP))) {
+		schedule_work(&info->tqueue);
+	}
+
+#ifdef SERIAL_DEBUG_INTR
+	printk("THRE...");
+#endif
+}
+
+#ifdef notdef
+	/* I need to do this for the SCCs, so it is left as a reminder.
+	*/
+static _INLINE_ void check_modem_status(struct async_struct *info)
+{
+	int	status;
+	/* struct	async_icount *icount; */
+	struct	async_icount_24 *icount;
+	
+	status = serial_in(info, UART_MSR);
+
+	if (status & UART_MSR_ANY_DELTA) {
+		icount = &info->state->icount;
+		/* update input line counters */
+		if (status & UART_MSR_TERI)
+			icount->rng++;
+		if (status & UART_MSR_DDSR)
+			icount->dsr++;
+		if (status & UART_MSR_DDCD) {
+			icount->dcd++;
+#ifdef CONFIG_HARD_PPS
+			if ((info->flags & ASYNC_HARDPPS_CD) &&
+			    (status & UART_MSR_DCD))
+				hardpps();
+#endif
+		}
+		if (status & UART_MSR_DCTS)
+			icount->cts++;
+		wake_up_interruptible(&info->delta_msr_wait);
+	}
+
+	if ((info->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
+#if (defined(SERIAL_DEBUG_OPEN) || defined(SERIAL_DEBUG_INTR))
+		printk("ttys%d CD now %s...", info->line,
+		       (status & UART_MSR_DCD) ? "on" : "off");
+#endif		
+		if (status & UART_MSR_DCD)
+			wake_up_interruptible(&info->open_wait);
+		else {
+#ifdef SERIAL_DEBUG_OPEN
+			printk("scheduling hangup...");
+#endif
+			queue_task(&info->tqueue_hangup,
+					   &tq_scheduler);
+		}
+	}
+	if (info->flags & ASYNC_CTS_FLOW) {
+		if (info->tty->hw_stopped) {
+			if (status & UART_MSR_CTS) {
+#if (defined(SERIAL_DEBUG_INTR) || defined(SERIAL_DEBUG_FLOW))
+				printk("CTS tx start...");
+#endif
+				info->tty->hw_stopped = 0;
+				info->IER |= UART_IER_THRI;
+				serial_out(info, UART_IER, info->IER);
+				rs_sched_event(info, RS_EVENT_WRITE_WAKEUP);
+				return;
+			}
+		} else {
+			if (!(status & UART_MSR_CTS)) {
+#if (defined(SERIAL_DEBUG_INTR) || defined(SERIAL_DEBUG_FLOW))
+				printk("CTS tx stop...");
+#endif
+				info->tty->hw_stopped = 1;
+				info->IER &= ~UART_IER_THRI;
+				serial_out(info, UART_IER, info->IER);
+			}
+		}
+	}
+}
+#endif
+
+/*
+ * This is the serial driver's interrupt routine for a single port
+ */
+/* static void rs_360_interrupt(void *dev_id) */ /* until and if we start servicing irqs here */
+static void rs_360_interrupt(int vec, void *dev_id, struct pt_regs *fp)
+{
+	u_char	events;
+	int	idx;
+	ser_info_t *info;
+	volatile struct smc_regs *smcp;
+	volatile struct scc_regs *sccp;
+	
+	info = (ser_info_t *)dev_id;
+
+	idx = PORT_NUM(info->state->smc_scc_num);
+	if (info->state->smc_scc_num & NUM_IS_SCC) {
+		sccp = &pquicc->scc_regs[idx];
+		events = sccp->scc_scce;
+		if (events & SCCM_RX)
+			receive_chars(info);
+		if (events & SCCM_TX)
+			transmit_chars(info);
+		sccp->scc_scce = events;
+	} else {
+		smcp = &pquicc->smc_regs[idx];
+		events = smcp->smc_smce;
+		if (events & SMCM_BRKE)
+			receive_break(info);
+		if (events & SMCM_RX)
+			receive_chars(info);
+		if (events & SMCM_TX)
+			transmit_chars(info);
+		smcp->smc_smce = events;
+	}
+	
+#ifdef SERIAL_DEBUG_INTR
+	printk("rs_interrupt_single(%d, %x)...",
+					info->state->smc_scc_num, events);
+#endif
+#ifdef modem_control
+	check_modem_status(info);
+#endif
+	info->last_active = jiffies;
+#ifdef SERIAL_DEBUG_INTR
+	printk("end.\n");
+#endif
+}
+
+
+/*
+ * -------------------------------------------------------------------
+ * Here ends the serial interrupt routines.
+ * -------------------------------------------------------------------
+ */
+
+
+static void do_softint(void *private_)
+{
+	ser_info_t	*info = (ser_info_t *) private_;
+	struct tty_struct	*tty;
+	
+	tty = info->tty;
+	if (!tty)
+		return;
+
+	if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event))
+		tty_wakeup(tty);
+}
+
+
+/*
+ * This routine is called from the scheduler tqueue when the interrupt
+ * routine has signalled that a hangup has occurred.  The path of
+ * hangup processing is:
+ *
+ * 	serial interrupt routine -> (scheduler tqueue) ->
+ * 	do_serial_hangup() -> tty->hangup() -> rs_hangup()
+ * 
+ */
+static void do_serial_hangup(void *private_)
+{
+	struct async_struct	*info = (struct async_struct *) private_;
+	struct tty_struct	*tty;
+	
+	tty = info->tty;
+	if (!tty)
+		return;
+
+	tty_hangup(tty);
+}
+
+
+static int startup(ser_info_t *info)
+{
+	unsigned long flags;
+	int	retval=0;
+	int	idx;
+	/*struct serial_state *state = info->state;*/
+	volatile struct smc_regs *smcp;
+	volatile struct scc_regs *sccp;
+	volatile struct smc_uart_pram	*up;
+	volatile struct uart_pram	    *scup;
+
+
+	local_irq_save(flags);
+
+	if (info->flags & ASYNC_INITIALIZED) {
+		goto errout;
+	}
+
+#ifdef maybe
+	if (!state->port || !state->type) {
+		if (info->tty)
+			set_bit(TTY_IO_ERROR, &info->tty->flags);
+		goto errout;
+	}
+#endif
+
+#ifdef SERIAL_DEBUG_OPEN
+	printk("starting up ttys%d (irq %d)...", info->line, state->irq);
+#endif
+
+
+#ifdef modem_control
+	info->MCR = 0;
+	if (info->tty->termios->c_cflag & CBAUD)
+		info->MCR = UART_MCR_DTR | UART_MCR_RTS;
+#endif
+	
+	if (info->tty)
+		clear_bit(TTY_IO_ERROR, &info->tty->flags);
+
+	/*
+	 * and set the speed of the serial port
+	 */
+	change_speed(info);
+
+	idx = PORT_NUM(info->state->smc_scc_num);
+	if (info->state->smc_scc_num & NUM_IS_SCC) {
+		sccp = &pquicc->scc_regs[idx];
+		scup = &pquicc->pram[info->state->port].scc.pscc.u;
+
+		scup->mrblr = RX_BUF_SIZE;
+		scup->max_idl = RX_BUF_SIZE;
+
+		sccp->scc_sccm |= (UART_SCCM_TX | UART_SCCM_RX);
+		sccp->scc_gsmr.w.low |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT);
+
+	} else {
+		smcp = &pquicc->smc_regs[idx];
+
+		/* Enable interrupts and I/O.
+		*/
+		smcp->smc_smcm |= (SMCM_RX | SMCM_TX);
+		smcp->smc_smcmr |= (SMCMR_REN | SMCMR_TEN);
+
+		/* We can tune the buffer length and idle characters
+		 * to take advantage of the entire incoming buffer size.
+		 * If mrblr is something other than 1, maxidl has to be
+		 * non-zero or we never get an interrupt.  The maxidl
+		 * is the number of character times we wait after reception
+		 * of the last character before we decide no more characters
+		 * are coming.
+		 */
+		/* up = (smc_uart_t *)&pquicc->cp_dparam[state->port]; */
+		/* holy unionized structures, Batman: */
+		up = &pquicc->pram[info->state->port].scc.pothers.idma_smc.psmc.u;
+
+		up->mrblr = RX_BUF_SIZE;
+		up->max_idl = RX_BUF_SIZE;
+
+		up->brkcr = 1;	/* number of break chars */
+	}
+
+	info->flags |= ASYNC_INITIALIZED;
+	local_irq_restore(flags);
+	return 0;
+	
+errout:
+	local_irq_restore(flags);
+	return retval;
+}
+
+/*
+ * This routine will shutdown a serial port; interrupts are disabled, and
+ * DTR is dropped if the hangup on close termio flag is on.
+ */
+static void shutdown(ser_info_t *info)
+{
+	unsigned long	flags;
+	struct serial_state *state;
+	int		idx;
+	volatile struct smc_regs	*smcp;
+	volatile struct scc_regs	*sccp;
+
+	if (!(info->flags & ASYNC_INITIALIZED))
+		return;
+
+	state = info->state;
+
+#ifdef SERIAL_DEBUG_OPEN
+	printk("Shutting down serial port %d (irq %d)....", info->line,
+	       state->irq);
+#endif
+	
+	local_irq_save(flags);
+
+	idx = PORT_NUM(state->smc_scc_num);
+	if (state->smc_scc_num & NUM_IS_SCC) {
+		sccp = &pquicc->scc_regs[idx];
+		sccp->scc_gsmr.w.low &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
+#ifdef CONFIG_SERIAL_CONSOLE
+		/* We can't disable the transmitter if this is the
+		 * system console.
+		 */
+		if ((state - rs_table) != CONFIG_SERIAL_CONSOLE_PORT)
+#endif
+		sccp->scc_sccm &= ~(UART_SCCM_TX | UART_SCCM_RX);
+	} else {
+		smcp = &pquicc->smc_regs[idx];
+
+		/* Disable interrupts and I/O.
+		 */
+		smcp->smc_smcm &= ~(SMCM_RX | SMCM_TX);
+#ifdef CONFIG_SERIAL_CONSOLE
+		/* We can't disable the transmitter if this is the
+		 * system console.
+		 */
+		if ((state - rs_table) != CONFIG_SERIAL_CONSOLE_PORT)
+#endif
+			smcp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
+	}
+	
+	if (info->tty)
+		set_bit(TTY_IO_ERROR, &info->tty->flags);
+
+	info->flags &= ~ASYNC_INITIALIZED;
+	local_irq_restore(flags);
+}
+
+/*
+ * This routine is called to set the UART divisor registers to match
+ * the specified baud rate for a serial port.
+ */
+static void change_speed(ser_info_t *info)
+{
+	int	baud_rate;
+	unsigned cflag, cval, scval, prev_mode;
+	int	i, bits, sbits, idx;
+	unsigned long	flags;
+	struct serial_state *state;
+	volatile struct smc_regs	*smcp;
+	volatile struct scc_regs	*sccp;
+
+	if (!info->tty || !info->tty->termios)
+		return;
+	cflag = info->tty->termios->c_cflag;
+
+	state = info->state;
+
+	/* Character length programmed into the mode register is the
+	 * sum of: 1 start bit, number of data bits, 0 or 1 parity bit,
+	 * 1 or 2 stop bits, minus 1.
+	 * The value 'bits' counts this for us.
+	 */
+	cval = 0;
+	scval = 0;
+
+	/* byte size and parity */
+	switch (cflag & CSIZE) {
+	      case CS5: bits = 5; break;
+	      case CS6: bits = 6; break;
+	      case CS7: bits = 7; break;
+	      case CS8: bits = 8; break;
+	      /* Never happens, but GCC is too dumb to figure it out */
+	      default:  bits = 8; break;
+	}
+	sbits = bits - 5;
+
+	if (cflag & CSTOPB) {
+		cval |= SMCMR_SL;	/* Two stops */
+		scval |= SCU_PMSR_SL;
+		bits++;
+	}
+	if (cflag & PARENB) {
+		cval |= SMCMR_PEN;
+		scval |= SCU_PMSR_PEN;
+		bits++;
+	}
+	if (!(cflag & PARODD)) {
+		cval |= SMCMR_PM_EVEN;
+		scval |= (SCU_PMSR_REVP | SCU_PMSR_TEVP);
+	}
+
+	/* Determine divisor based on baud rate */
+	i = cflag & CBAUD;
+	if (i >= (sizeof(baud_table)/sizeof(int)))
+		baud_rate = 9600;
+	else
+		baud_rate = baud_table[i];
+
+	info->timeout = (TX_BUF_SIZE*HZ*bits);
+	info->timeout += HZ/50;		/* Add .02 seconds of slop */
+
+#ifdef modem_control
+	/* CTS flow control flag and modem status interrupts */
+	info->IER &= ~UART_IER_MSI;
+	if (info->flags & ASYNC_HARDPPS_CD)
+		info->IER |= UART_IER_MSI;
+	if (cflag & CRTSCTS) {
+		info->flags |= ASYNC_CTS_FLOW;
+		info->IER |= UART_IER_MSI;
+	} else
+		info->flags &= ~ASYNC_CTS_FLOW;
+	if (cflag & CLOCAL)
+		info->flags &= ~ASYNC_CHECK_CD;
+	else {
+		info->flags |= ASYNC_CHECK_CD;
+		info->IER |= UART_IER_MSI;
+	}
+	serial_out(info, UART_IER, info->IER);
+#endif
+
+	/*
+	 * Set up parity check flag
+	 */
+#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
+
+	info->read_status_mask = (BD_SC_EMPTY | BD_SC_OV);
+	if (I_INPCK(info->tty))
+		info->read_status_mask |= BD_SC_FR | BD_SC_PR;
+	if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
+		info->read_status_mask |= BD_SC_BR;
+	
+	/*
+	 * Characters to ignore
+	 */
+	info->ignore_status_mask = 0;
+	if (I_IGNPAR(info->tty))
+		info->ignore_status_mask |= BD_SC_PR | BD_SC_FR;
+	if (I_IGNBRK(info->tty)) {
+		info->ignore_status_mask |= BD_SC_BR;
+		/*
+		 * If we're ignore parity and break indicators, ignore 
+		 * overruns too.  (For real raw support).
+		 */
+		if (I_IGNPAR(info->tty))
+			info->ignore_status_mask |= BD_SC_OV;
+	}
+	/*
+	 * !!! ignore all characters if CREAD is not set
+	 */
+	if ((cflag & CREAD) == 0)
+	 info->read_status_mask &= ~BD_SC_EMPTY;
+	 local_irq_save(flags);
+
+	 /* Start bit has not been added (so don't, because we would just
+	  * subtract it later), and we need to add one for the number of
+	  * stops bits (there is always at least one).
+	  */
+	 bits++;
+	 idx = PORT_NUM(state->smc_scc_num);
+	 if (state->smc_scc_num & NUM_IS_SCC) {
+         sccp = &pquicc->scc_regs[idx];
+         sccp->scc_psmr = (sbits << 12) | scval;
+     } else {
+         smcp = &pquicc->smc_regs[idx];
+
+		/* Set the mode register.  We want to keep a copy of the
+		 * enables, because we want to put them back if they were
+		 * present.
+		 */
+		prev_mode = smcp->smc_smcmr;
+		smcp->smc_smcmr = smcr_mk_clen(bits) | cval |  SMCMR_SM_UART;
+		smcp->smc_smcmr |= (prev_mode & (SMCMR_REN | SMCMR_TEN));
+	}
+
+	m360_cpm_setbrg((state - rs_table), baud_rate);
+
+	local_irq_restore(flags);
+}
+
+static void rs_360_put_char(struct tty_struct *tty, unsigned char ch)
+{
+	ser_info_t *info = (ser_info_t *)tty->driver_data;
+	volatile QUICC_BD	*bdp;
+
+	if (serial_paranoia_check(info, tty->name, "rs_put_char"))
+		return;
+
+	if (!tty)
+		return;
+
+	bdp = info->tx_cur;
+	while (bdp->status & BD_SC_READY);
+
+	/* *((char *)__va(bdp->buf)) = ch; */
+	*((char *)bdp->buf) = ch;
+	bdp->length = 1;
+	bdp->status |= BD_SC_READY;
+
+	/* Get next BD.
+	*/
+	if (bdp->status & BD_SC_WRAP)
+		bdp = info->tx_bd_base;
+	else
+		bdp++;
+
+	info->tx_cur = (QUICC_BD *)bdp;
+
+}
+
+static int rs_360_write(struct tty_struct * tty,
+		    const unsigned char *buf, int count)
+{
+	int	c, ret = 0;
+	ser_info_t *info = (ser_info_t *)tty->driver_data;
+	volatile QUICC_BD *bdp;
+
+#ifdef CONFIG_KGDB
+	/* Try to let stub handle output. Returns true if it did. */ 
+	if (kgdb_output_string(buf, count))
+		return ret;
+#endif
+
+	if (serial_paranoia_check(info, tty->name, "rs_write"))
+		return 0;
+
+	if (!tty) 
+		return 0;
+
+	bdp = info->tx_cur;
+
+	while (1) {
+		c = min(count, TX_BUF_SIZE);
+
+		if (c <= 0)
+			break;
+
+		if (bdp->status & BD_SC_READY) {
+			info->flags |= TX_WAKEUP;
+			break;
+		}
+
+		/* memcpy(__va(bdp->buf), buf, c); */
+		memcpy((void *)bdp->buf, buf, c);
+
+		bdp->length = c;
+		bdp->status |= BD_SC_READY;
+
+		buf += c;
+		count -= c;
+		ret += c;
+
+		/* Get next BD.
+		*/
+		if (bdp->status & BD_SC_WRAP)
+			bdp = info->tx_bd_base;
+		else
+			bdp++;
+		info->tx_cur = (QUICC_BD *)bdp;
+	}
+	return ret;
+}
+
+static int rs_360_write_room(struct tty_struct *tty)
+{
+	ser_info_t *info = (ser_info_t *)tty->driver_data;
+	int	ret;
+
+	if (serial_paranoia_check(info, tty->name, "rs_write_room"))
+		return 0;
+
+	if ((info->tx_cur->status & BD_SC_READY) == 0) {
+		info->flags &= ~TX_WAKEUP;
+		ret = TX_BUF_SIZE;
+	}
+	else {
+		info->flags |= TX_WAKEUP;
+		ret = 0;
+	}
+	return ret;
+}
+
+/* I could track this with transmit counters....maybe later.
+*/
+static int rs_360_chars_in_buffer(struct tty_struct *tty)
+{
+	ser_info_t *info = (ser_info_t *)tty->driver_data;
+				
+	if (serial_paranoia_check(info, tty->name, "rs_chars_in_buffer"))
+		return 0;
+	return 0;
+}
+
+static void rs_360_flush_buffer(struct tty_struct *tty)
+{
+	ser_info_t *info = (ser_info_t *)tty->driver_data;
+				
+	if (serial_paranoia_check(info, tty->name, "rs_flush_buffer"))
+		return;
+
+	/* There is nothing to "flush", whatever we gave the CPM
+	 * is on its way out.
+	 */
+	tty_wakeup(tty);
+	info->flags &= ~TX_WAKEUP;
+}
+
+/*
+ * This function is used to send a high-priority XON/XOFF character to
+ * the device
+ */
+static void rs_360_send_xchar(struct tty_struct *tty, char ch)
+{
+	volatile QUICC_BD	*bdp;
+
+	ser_info_t *info = (ser_info_t *)tty->driver_data;
+
+	if (serial_paranoia_check(info, tty->name, "rs_send_char"))
+		return;
+
+	bdp = info->tx_cur;
+	while (bdp->status & BD_SC_READY);
+
+	/* *((char *)__va(bdp->buf)) = ch; */
+	*((char *)bdp->buf) = ch;
+	bdp->length = 1;
+	bdp->status |= BD_SC_READY;
+
+	/* Get next BD.
+	*/
+	if (bdp->status & BD_SC_WRAP)
+		bdp = info->tx_bd_base;
+	else
+		bdp++;
+
+	info->tx_cur = (QUICC_BD *)bdp;