x86/vdso: Fix 'make bzImage' on older distros
[linux/fpc-iii.git] / arch / mn10300 / kernel / mn10300-serial.h
blob01791c68ea1f1330894e71f41f1ded0131d82e93
1 /* MN10300 On-chip serial port driver definitions
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
11 #ifndef _MN10300_SERIAL_H
12 #define _MN10300_SERIAL_H
14 #ifndef __ASSEMBLY__
15 #include <linux/serial_core.h>
16 #include <linux/termios.h>
17 #endif
19 #include <asm/page.h>
20 #include <asm/serial-regs.h>
22 #define NR_PORTS 3 /* should be set 3 or 9 or 16 */
24 #define MNSC_BUFFER_SIZE +(PAGE_SIZE / 2)
26 /* intr_flags bits */
27 #define MNSCx_RX_AVAIL 0x01
28 #define MNSCx_RX_OVERF 0x02
29 #define MNSCx_TX_SPACE 0x04
30 #define MNSCx_TX_EMPTY 0x08
32 /* tx_flags bits */
33 #define MNSCx_TX_BREAK 0x01
34 #define MNSCx_TX_STOP 0x02
36 #ifndef __ASSEMBLY__
38 struct mn10300_serial_port {
39 char *rx_buffer; /* reception buffer base */
40 unsigned rx_inp; /* pointer to rx input offset */
41 unsigned rx_outp; /* pointer to rx output offset */
42 u8 tx_xchar; /* high-priority XON/XOFF buffer */
43 u8 tx_flags; /* transmit break/stop request */
44 u8 intr_flags; /* interrupt flags */
45 volatile u16 *rx_icr; /* Rx interrupt control register */
46 volatile u16 *tx_icr; /* Tx interrupt control register */
47 int rx_irq; /* reception IRQ */
48 int tx_irq; /* transmission IRQ */
49 int tm_irq; /* timer IRQ */
51 const char *name; /* name of serial port */
52 const char *rx_name; /* Rx interrupt handler name of serial port */
53 const char *tx_name; /* Tx interrupt handler name of serial port */
54 const char *tm_name; /* Timer interrupt handler name */
55 unsigned short type; /* type of serial port */
56 unsigned char isconsole; /* T if it's a console */
57 volatile void *_iobase; /* pointer to base of I/O control regs */
58 volatile u16 *_control; /* control register pointer */
59 volatile u8 *_status; /* status register pointer */
60 volatile u8 *_intr; /* interrupt register pointer */
61 volatile u8 *_rxb; /* receive buffer register pointer */
62 volatile u8 *_txb; /* transmit buffer register pointer */
63 volatile u16 *_tmicr; /* timer interrupt control register */
64 volatile u8 *_tmxmd; /* baud rate timer mode register */
65 volatile u16 *_tmxbr; /* baud rate timer base register */
67 /* this must come down here so that assembly can use BSET to access the
68 * above fields */
69 struct uart_port uart;
71 unsigned short rx_brk; /* current break reception status */
72 u16 tx_cts; /* current CTS status */
73 int gdbstub; /* preemptively stolen by GDB stub */
75 u8 clock_src; /* clock source */
76 #define MNSCx_CLOCK_SRC_IOCLK 0
77 #define MNSCx_CLOCK_SRC_IOBCLK 1
79 u8 div_timer; /* timer used as divisor */
80 #define MNSCx_DIV_TIMER_16BIT 0
81 #define MNSCx_DIV_TIMER_8BIT 1
83 u16 options; /* options */
84 #define MNSCx_OPT_CTS 0x0001
86 unsigned long ioclk; /* base clock rate */
89 #ifdef CONFIG_MN10300_TTYSM0
90 extern struct mn10300_serial_port mn10300_serial_port_sif0;
91 #endif
93 #ifdef CONFIG_MN10300_TTYSM1
94 extern struct mn10300_serial_port mn10300_serial_port_sif1;
95 #endif
97 #ifdef CONFIG_MN10300_TTYSM2
98 extern struct mn10300_serial_port mn10300_serial_port_sif2;
99 #endif
101 extern struct mn10300_serial_port *mn10300_serial_ports[];
103 struct mn10300_serial_int {
104 struct mn10300_serial_port *port;
105 asmlinkage void (*vdma)(void);
108 extern struct mn10300_serial_int mn10300_serial_int_tbl[];
110 extern asmlinkage void mn10300_serial_vdma_interrupt(void);
111 extern asmlinkage void mn10300_serial_vdma_rx_handler(void);
112 extern asmlinkage void mn10300_serial_vdma_tx_handler(void);
114 #endif /* __ASSEMBLY__ */
116 #if defined(CONFIG_GDBSTUB_ON_TTYSM0)
117 #define SCgSTR SC0STR
118 #define SCgRXB SC0RXB
119 #define SCgRXIRQ SC0RXIRQ
120 #elif defined(CONFIG_GDBSTUB_ON_TTYSM1)
121 #define SCgSTR SC1STR
122 #define SCgRXB SC1RXB
123 #define SCgRXIRQ SC1RXIRQ
124 #elif defined(CONFIG_GDBSTUB_ON_TTYSM2)
125 #define SCgSTR SC2STR
126 #define SCgRXB SC2RXB
127 #define SCgRXIRQ SC2RXIRQ
128 #endif
130 #endif /* _MN10300_SERIAL_H */