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-/* 68328serial.h: Definitions for the mc68328 serial driver.
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- *
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- * Copyright (C) 1995 David S. Miller <davem@caip.rutgers.edu>
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- * Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com>
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- * Copyright (C) 1998, 1999 D. Jeff Dionne <jeff@uclinux.org>
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- * Copyright (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>
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- *
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- * VZ Support/Fixes Evan Stawnyczy <e@lineo.ca>
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- */
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-
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-#ifndef _MC683XX_SERIAL_H
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-#define _MC683XX_SERIAL_H
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-
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-/*
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- * I believe this is the optimal setting that reduces the number of interrupts.
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- * At high speeds the output might become a little "bursted" (use USTCNT_TXHE
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- * if that bothers you), but in most cases it will not, since we try to
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- * transmit characters every time rs_interrupt is called. Thus, quite often
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- * you'll see that a receive interrupt occures before the transmit one.
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- * -- Vladimir Gurevich
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- */
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-#define USTCNT_TX_INTR_MASK (USTCNT_TXEE)
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-
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-/*
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- * 68328 and 68EZ328 UARTS are a little bit different. EZ328 has special
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- * "Old data interrupt" which occures whenever the data stay in the FIFO
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- * longer than 30 bits time. This allows us to use FIFO without compromising
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- * latency. '328 does not have this feature and without the real 328-based
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- * board I would assume that RXRE is the safest setting.
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- *
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- * For EZ328 I use RXHE (Half empty) interrupt to reduce the number of
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- * interrupts. RXFE (receive queue full) causes the system to lose data
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- * at least at 115200 baud
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- *
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- * If your board is busy doing other stuff, you might consider to use
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- * RXRE (data ready intrrupt) instead.
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- *
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- * The other option is to make these INTR masks run-time configurable, so
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- * that people can dynamically adapt them according to the current usage.
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- * -- Vladimir Gurevich
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- */
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-
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-/* (es) */
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-#if defined(CONFIG_M68EZ328) || defined(CONFIG_M68VZ328)
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-#define USTCNT_RX_INTR_MASK (USTCNT_RXHE | USTCNT_ODEN)
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-#elif defined(CONFIG_M68328)
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-#define USTCNT_RX_INTR_MASK (USTCNT_RXRE)
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-#else
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-#error Please, define the Rx interrupt events for your CPU
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-#endif
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-/* (/es) */
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-
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-/*
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- * This is our internal structure for each serial port's state.
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- *
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- * Many fields are paralleled by the structure used by the serial_struct
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- * structure.
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- *
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- * For definitions of the flags field, see tty.h
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- */
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-
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-struct m68k_serial {
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- char is_cons; /* Is this our console. */
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- int magic;
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- int baud_base;
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- int port;
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- int irq;
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- int flags; /* defined in tty.h */
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- int type; /* UART type */
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- struct tty_struct *tty;
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- int custom_divisor;
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- int x_char; /* xon/xoff character */
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- int close_delay;
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- unsigned short closing_wait;
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- int line;
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- int count; /* # of fd on device */
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- int blocked_open; /* # of blocked opens */
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- unsigned char *xmit_buf;
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- int xmit_head;
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- int xmit_tail;
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- int xmit_cnt;
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- wait_queue_head_t open_wait;
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- wait_queue_head_t close_wait;
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-};
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-
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-#define SERIAL_MAGIC 0x5301
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-
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-/*
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- * Define the number of ports supported and their irqs.
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- */
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-#define NR_PORTS 1
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-#define UART_IRQ_DEFNS {UART_IRQ_NUM}
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-
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-#endif /* !(_MC683XX_SERIAL_H) */
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