Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | /* MN10300 On-chip serial port driver definitions
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef _MN10300_SERIAL_H
#define _MN10300_SERIAL_H
#ifndef __ASSEMBLY__
#include <linux/serial_core.h>
#include <linux/termios.h>
#endif
#include <asm/page.h>
#include <asm/serial-regs.h>
#define NR_PORTS 3 /* should be set 3 or 9 or 16 */
#define MNSC_BUFFER_SIZE +(PAGE_SIZE / 2)
/* intr_flags bits */
#define MNSCx_RX_AVAIL 0x01
#define MNSCx_RX_OVERF 0x02
#define MNSCx_TX_SPACE 0x04
#define MNSCx_TX_EMPTY 0x08
/* tx_flags bits */
#define MNSCx_TX_BREAK 0x01
#define MNSCx_TX_STOP 0x02
#ifndef __ASSEMBLY__
struct mn10300_serial_port {
char *rx_buffer; /* reception buffer base */
unsigned rx_inp; /* pointer to rx input offset */
unsigned rx_outp; /* pointer to rx output offset */
u8 tx_xchar; /* high-priority XON/XOFF buffer */
u8 tx_flags; /* transmit break/stop request */
u8 intr_flags; /* interrupt flags */
volatile u16 *rx_icr; /* Rx interrupt control register */
volatile u16 *tx_icr; /* Tx interrupt control register */
int rx_irq; /* reception IRQ */
int tx_irq; /* transmission IRQ */
int tm_irq; /* timer IRQ */
const char *name; /* name of serial port */
const char *rx_name; /* Rx interrupt handler name of serial port */
const char *tx_name; /* Tx interrupt handler name of serial port */
const char *tm_name; /* Timer interrupt handler name */
unsigned short type; /* type of serial port */
unsigned char isconsole; /* T if it's a console */
volatile void *_iobase; /* pointer to base of I/O control regs */
volatile u16 *_control; /* control register pointer */
volatile u8 *_status; /* status register pointer */
volatile u8 *_intr; /* interrupt register pointer */
volatile u8 *_rxb; /* receive buffer register pointer */
volatile u8 *_txb; /* transmit buffer register pointer */
volatile u16 *_tmicr; /* timer interrupt control register */
volatile u8 *_tmxmd; /* baud rate timer mode register */
volatile u16 *_tmxbr; /* baud rate timer base register */
/* this must come down here so that assembly can use BSET to access the
* above fields */
struct uart_port uart;
unsigned short rx_brk; /* current break reception status */
u16 tx_cts; /* current CTS status */
int gdbstub; /* preemptively stolen by GDB stub */
u8 clock_src; /* clock source */
#define MNSCx_CLOCK_SRC_IOCLK 0
#define MNSCx_CLOCK_SRC_IOBCLK 1
u8 div_timer; /* timer used as divisor */
#define MNSCx_DIV_TIMER_16BIT 0
#define MNSCx_DIV_TIMER_8BIT 1
u16 options; /* options */
#define MNSCx_OPT_CTS 0x0001
unsigned long ioclk; /* base clock rate */
};
#ifdef CONFIG_MN10300_TTYSM0
extern struct mn10300_serial_port mn10300_serial_port_sif0;
#endif
#ifdef CONFIG_MN10300_TTYSM1
extern struct mn10300_serial_port mn10300_serial_port_sif1;
#endif
#ifdef CONFIG_MN10300_TTYSM2
extern struct mn10300_serial_port mn10300_serial_port_sif2;
#endif
extern struct mn10300_serial_port *mn10300_serial_ports[];
struct mn10300_serial_int {
struct mn10300_serial_port *port;
asmlinkage void (*vdma)(void);
};
extern struct mn10300_serial_int mn10300_serial_int_tbl[];
extern asmlinkage void mn10300_serial_vdma_interrupt(void);
extern asmlinkage void mn10300_serial_vdma_rx_handler(void);
extern asmlinkage void mn10300_serial_vdma_tx_handler(void);
#endif /* __ASSEMBLY__ */
#if defined(CONFIG_GDBSTUB_ON_TTYSM0)
#define SCgSTR SC0STR
#define SCgRXB SC0RXB
#define SCgRXIRQ SC0RXIRQ
#elif defined(CONFIG_GDBSTUB_ON_TTYSM1)
#define SCgSTR SC1STR
#define SCgRXB SC1RXB
#define SCgRXIRQ SC1RXIRQ
#elif defined(CONFIG_GDBSTUB_ON_TTYSM2)
#define SCgSTR SC2STR
#define SCgRXB SC2RXB
#define SCgRXIRQ SC2RXIRQ
#endif
#endif /* _MN10300_SERIAL_H */
|