[linux-2.6-block.git] / include / asm-mn10300 / unit-asb2303 / serial.h

/* ASB2303-specific 8250 serial ports
 *
 * 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 _ASM_UNIT_SERIAL_H
#define _ASM_UNIT_SERIAL_H

#include <asm/cpu-regs.h>
#include <asm/proc/irq.h>
#include <linux/serial_reg.h>

#define SERIAL_PORT0_BASE_ADDRESS	0xA6FB0000
#define SERIAL_PORT1_BASE_ADDRESS	0xA6FC0000

#define SERIAL_IRQ	XIRQ0	/* Dual serial (PC16552)	(Hi) */

/*
 * dispose of the /dev/ttyS0 and /dev/ttyS1 serial ports
 */
#ifndef CONFIG_GDBSTUB_ON_TTYSx

#define SERIAL_PORT_DFNS						\
	{								\
	.baud_base		= BASE_BAUD,				\
	.irq			= SERIAL_IRQ,				\
	.flags			= STD_COM_FLAGS,			\
	.iomem_base		= (u8 *) SERIAL_PORT0_BASE_ADDRESS,	\
	.iomem_reg_shift	= 2,					\
	.io_type		= SERIAL_IO_MEM,			\
	},								\
	{								\
	.baud_base		= BASE_BAUD,				\
	.irq			= SERIAL_IRQ,				\
	.flags			= STD_COM_FLAGS,			\
	.iomem_base		= (u8 *) SERIAL_PORT1_BASE_ADDRESS,	\
	.iomem_reg_shift	= 2,					\
	.io_type		= SERIAL_IO_MEM,			\
	},

#ifndef __ASSEMBLY__

static inline void __debug_to_serial(const char *p, int n)
{
}

#endif /* !__ASSEMBLY__ */

#else /* CONFIG_GDBSTUB_ON_TTYSx */

#define SERIAL_PORT_DFNS /* both stolen by gdb-stub because they share an IRQ */

#if defined(CONFIG_GDBSTUB_ON_TTYS0)
#define GDBPORT_SERIAL_RX	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_RX  * 4, u8)
#define GDBPORT_SERIAL_TX	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_TX  * 4, u8)
#define GDBPORT_SERIAL_DLL	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLL * 4, u8)
#define GDBPORT_SERIAL_DLM	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLM * 4, u8)
#define GDBPORT_SERIAL_IER	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IER * 4, u8)
#define GDBPORT_SERIAL_IIR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IIR * 4, u8)
#define GDBPORT_SERIAL_FCR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_FCR * 4, u8)
#define GDBPORT_SERIAL_LCR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LCR * 4, u8)
#define GDBPORT_SERIAL_MCR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MCR * 4, u8)
#define GDBPORT_SERIAL_LSR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LSR * 4, u8)
#define GDBPORT_SERIAL_MSR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MSR * 4, u8)
#define GDBPORT_SERIAL_SCR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_SCR * 4, u8)
#define GDBPORT_SERIAL_IRQ	SERIAL_IRQ

#elif defined(CONFIG_GDBSTUB_ON_TTYS1)
#define GDBPORT_SERIAL_RX	__SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_RX  * 4, u8)
#define GDBPORT_SERIAL_TX	__SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_TX  * 4, u8)
#define GDBPORT_SERIAL_DLL	__SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_DLL * 4, u8)
#define GDBPORT_SERIAL_DLM	__SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_DLM * 4, u8)
#define GDBPORT_SERIAL_IER	__SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_IER * 4, u8)
#define GDBPORT_SERIAL_IIR	__SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_IIR * 4, u8)
#define GDBPORT_SERIAL_FCR	__SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_FCR * 4, u8)
#define GDBPORT_SERIAL_LCR	__SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_LCR * 4, u8)
#define GDBPORT_SERIAL_MCR	__SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_MCR * 4, u8)
#define GDBPORT_SERIAL_LSR	__SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_LSR * 4, u8)
#define GDBPORT_SERIAL_MSR	__SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_MSR * 4, u8)
#define GDBPORT_SERIAL_SCR	__SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_SCR * 4, u8)
#define GDBPORT_SERIAL_IRQ	SERIAL_IRQ
#endif

#ifndef __ASSEMBLY__

#define LSR_WAIT_FOR(STATE)					\
do {								\
	while (!(GDBPORT_SERIAL_LSR & UART_LSR_##STATE)) {}	\
} while (0)
#define FLOWCTL_WAIT_FOR(LINE)					\
do {								\
	while (!(GDBPORT_SERIAL_MSR & UART_MSR_##LINE)) {}	\
} while (0)
#define FLOWCTL_CLEAR(LINE)			\
do {						\
	GDBPORT_SERIAL_MCR &= ~UART_MCR_##LINE;	\
} while (0)
#define FLOWCTL_SET(LINE)			\
do {						\
	GDBPORT_SERIAL_MCR |= UART_MCR_##LINE;	\
} while (0)
#define FLOWCTL_QUERY(LINE)	({ GDBPORT_SERIAL_MSR & UART_MSR_##LINE; })

static inline void __debug_to_serial(const char *p, int n)
{
	char ch;

	FLOWCTL_SET(DTR);

	for (; n > 0; n--) {
		LSR_WAIT_FOR(THRE);
		FLOWCTL_WAIT_FOR(CTS);

		ch = *p++;
		if (ch == 0x0a) {
			GDBPORT_SERIAL_TX = 0x0d;
			LSR_WAIT_FOR(THRE);
			FLOWCTL_WAIT_FOR(CTS);
		}
		GDBPORT_SERIAL_TX = ch;
	}

	FLOWCTL_CLEAR(DTR);
}

#endif /* !__ASSEMBLY__ */

#endif /* CONFIG_GDBSTUB_ON_TTYSx */

#endif /* _ASM_UNIT_SERIAL_H */
Commit	Line	Data
b920de1b DH	1	/* ASB2303-specific 8250 serial ports
	2	*
	3	* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
	4	* Written by David Howells (dhowells@redhat.com)
	5	*
	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.
	10	*/
	11
	12	#ifndef _ASM_UNIT_SERIAL_H
	13	#define _ASM_UNIT_SERIAL_H
	14
	15	#include <asm/cpu-regs.h>
	16	#include <asm/proc/irq.h>
	17	#include <linux/serial_reg.h>
	18
	19	#define SERIAL_PORT0_BASE_ADDRESS 0xA6FB0000
	20	#define SERIAL_PORT1_BASE_ADDRESS 0xA6FC0000
	21
	22	#define SERIAL_IRQ XIRQ0 /* Dual serial (PC16552) (Hi) */
	23
	24	/*
	25	* dispose of the /dev/ttyS0 and /dev/ttyS1 serial ports
	26	*/
	27	#ifndef CONFIG_GDBSTUB_ON_TTYSx
	28
	29	#define SERIAL_PORT_DFNS \
	30	{ \
	31	.baud_base = BASE_BAUD, \
	32	.irq = SERIAL_IRQ, \
	33	.flags = STD_COM_FLAGS, \
	34	.iomem_base = (u8 *) SERIAL_PORT0_BASE_ADDRESS, \
	35	.iomem_reg_shift = 2, \
	36	.io_type = SERIAL_IO_MEM, \
	37	}, \
	38	{ \
	39	.baud_base = BASE_BAUD, \
	40	.irq = SERIAL_IRQ, \
	41	.flags = STD_COM_FLAGS, \
	42	.iomem_base = (u8 *) SERIAL_PORT1_BASE_ADDRESS, \
	43	.iomem_reg_shift = 2, \
	44	.io_type = SERIAL_IO_MEM, \
	45	},
	46
	47	#ifndef __ASSEMBLY__
	48
	49	static inline void __debug_to_serial(const char *p, int n)
	50	{
	51	}
	52
	53	#endif /* !__ASSEMBLY__ */
	54
	55	#else /* CONFIG_GDBSTUB_ON_TTYSx */
	56
	57	#define SERIAL_PORT_DFNS /* both stolen by gdb-stub because they share an IRQ */
	58
	59	#if defined(CONFIG_GDBSTUB_ON_TTYS0)
	60	#define GDBPORT_SERIAL_RX __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_RX * 4, u8)
	61	#define GDBPORT_SERIAL_TX __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_TX * 4, u8)
	62	#define GDBPORT_SERIAL_DLL __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLL * 4, u8)
	63	#define GDBPORT_SERIAL_DLM __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLM * 4, u8)
	64	#define GDBPORT_SERIAL_IER __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IER * 4, u8)
65	#define GDBPORT_SERIAL_IIR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IIR * 4, u8)
66	#define GDBPORT_SERIAL_FCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_FCR * 4, u8)
67	#define GDBPORT_SERIAL_LCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LCR * 4, u8)
68	#define GDBPORT_SERIAL_MCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MCR * 4, u8)
69	#define GDBPORT_SERIAL_LSR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LSR * 4, u8)
70	#define GDBPORT_SERIAL_MSR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MSR * 4, u8)
71	#define GDBPORT_SERIAL_SCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_SCR * 4, u8)
72	#define GDBPORT_SERIAL_IRQ SERIAL_IRQ
73
74	#elif defined(CONFIG_GDBSTUB_ON_TTYS1)
75	#define GDBPORT_SERIAL_RX __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_RX * 4, u8)
76	#define GDBPORT_SERIAL_TX __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_TX * 4, u8)
77	#define GDBPORT_SERIAL_DLL __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_DLL * 4, u8)
78	#define GDBPORT_SERIAL_DLM __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_DLM * 4, u8)
79	#define GDBPORT_SERIAL_IER __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_IER * 4, u8)
80	#define GDBPORT_SERIAL_IIR __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_IIR * 4, u8)
81	#define GDBPORT_SERIAL_FCR __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_FCR * 4, u8)
82	#define GDBPORT_SERIAL_LCR __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_LCR * 4, u8)
83	#define GDBPORT_SERIAL_MCR __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_MCR * 4, u8)
84	#define GDBPORT_SERIAL_LSR __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_LSR * 4, u8)
85	#define GDBPORT_SERIAL_MSR __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_MSR * 4, u8)
86	#define GDBPORT_SERIAL_SCR __SYSREG(SERIAL_PORT1_BASE_ADDRESS + UART_SCR * 4, u8)
87	#define GDBPORT_SERIAL_IRQ SERIAL_IRQ
88	#endif
89
90	#ifndef __ASSEMBLY__
91
92	#define LSR_WAIT_FOR(STATE) \
93	do { \
94	while (!(GDBPORT_SERIAL_LSR & UART_LSR_##STATE)) {} \
95	} while (0)
96	#define FLOWCTL_WAIT_FOR(LINE) \
97	do { \
98	while (!(GDBPORT_SERIAL_MSR & UART_MSR_##LINE)) {} \
99	} while (0)
100	#define FLOWCTL_CLEAR(LINE) \
101	do { \
102	GDBPORT_SERIAL_MCR &= ~UART_MCR_##LINE; \
103	} while (0)
104	#define FLOWCTL_SET(LINE) \
105	do { \
106	GDBPORT_SERIAL_MCR \|= UART_MCR_##LINE; \
107	} while (0)
108	#define FLOWCTL_QUERY(LINE) ({ GDBPORT_SERIAL_MSR & UART_MSR_##LINE; })
109
110	static inline void __debug_to_serial(const char *p, int n)
111	{
112	char ch;
113
114	FLOWCTL_SET(DTR);
115
116	for (; n > 0; n--) {
117	LSR_WAIT_FOR(THRE);
118	FLOWCTL_WAIT_FOR(CTS);
119
120	ch = *p++;
121	if (ch == 0x0a) {
122	GDBPORT_SERIAL_TX = 0x0d;
123	LSR_WAIT_FOR(THRE);
124	FLOWCTL_WAIT_FOR(CTS);
125	}
126	GDBPORT_SERIAL_TX = ch;
127	}
128
129	FLOWCTL_CLEAR(DTR);
130	}
131
132	#endif /* !__ASSEMBLY__ */
133
134	#endif /* CONFIG_GDBSTUB_ON_TTYSx */
135
136	#endif /* _ASM_UNIT_SERIAL_H */