WebSVN – HelenOS – Blame – /branches/sparc/kernel/arch/ia64/src/ski/ski.c

Rev	Author	Line No.	Line
78	jermar	1	/*
		2	* Copyright (C) 2005 Jakub Jermar
		3	* All rights reserved.
		4	*
		5	* Redistribution and use in source and binary forms, with or without
		6	* modification, are permitted provided that the following conditions
		7	* are met:
		8	*
		9	* - Redistributions of source code must retain the above copyright
		10	* notice, this list of conditions and the following disclaimer.
		11	* - Redistributions in binary form must reproduce the above copyright
		12	* notice, this list of conditions and the following disclaimer in the
		13	* documentation and/or other materials provided with the distribution.
		14	* - The name of the author may not be used to endorse or promote products
		15	* derived from this software without specific prior written permission.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
		18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
		19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
		20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
		21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
		22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
		23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
		24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
		25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
		26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
		27	*/
		28
		29	#include <arch/ski/ski.h>
577	palkovsky	30	#include <console/console.h>
		31	#include <console/chardev.h>
1507	vana	32	#include <arch/interrupt.h>
		33	#include <sysinfo/sysinfo.h>
78	jermar	34
1507	vana	35	chardev_t ski_console;
		36	chardev_t ski_uconsole;
577	palkovsky	37	static bool kb_disable;
1507	vana	38	int kbd_uspace=0;
78	jermar	39
586	jermar	40	static void ski_putchar(chardev_t *d, const char ch);
583	jermar	41	static __s32 ski_getchar(void);
		42
79	jermar	43	/** Display character on debug console
		44	*
		45	* Use SSC (Simulator System Call) to
		46	* display character on debug console.
		47	*
583	jermar	48	* @param d Character device.
		49	* @param ch Character to be printed.
79	jermar	50	*/
586	jermar	51	void ski_putchar(chardev_t *d, const char ch)
78	jermar	52	{
892	vana	53	__asm__ volatile (
78	jermar	54	"mov r15=%0\n"
		55	"mov r32=%1\n" /* r32 is in0 */
		56	"break 0x80000\n" /* modifies r8 */
		57	:
		58	: "i" (SKI_PUTCHAR), "r" (ch)
		59	: "r15", "in0", "r8"
		60	);
		61
583	jermar	62	if (ch == '\n')
586	jermar	63	ski_putchar(d, '\r');
78	jermar	64	}
519	vana	65
523	jermar	66	/** Ask debug console if a key was pressed.
519	vana	67	*
		68	* Use SSC (Simulator System Call) to
		69	* get character from debug console.
523	jermar	70	*
		71	* This call is non-blocking.
		72	*
		73	* @return ASCII code of pressed key or 0 if no key pressed.
519	vana	74	*/
		75	__s32 ski_getchar(void)
		76	{
		77	__u64 ch;
		78
892	vana	79	__asm__ volatile (
584	jermar	80	"mov r15=%1\n"
519	vana	81	"break 0x80000;;\n" /* modifies r8 */
584	jermar	82	"mov %0=r8;;\n"
519	vana	83
584	jermar	84	: "=r" (ch)
		85	: "i" (SKI_GETCHAR)
519	vana	86	: "r15", "r8"
		87	);
		88
584	jermar	89	return (__s32) ch;
519	vana	90	}
577	palkovsky	91
892	vana	92	/**
893	jermar	93	* This is a blocking wrapper for ski_getchar().
		94	* To be used when the kernel crashes.
		95	*/
892	vana	96	static char ski_getchar_blocking(chardev_t *d)
		97	{
893	jermar	98	int ch;
		99
		100	while(!(ch=ski_getchar()))
		101	;
		102	if(ch == '\r')
		103	ch = '\n';
892	vana	104	return (char) ch;
		105	}
		106
577	palkovsky	107	/** Ask keyboard if a key was pressed. */
		108	void poll_keyboard(void)
		109	{
		110	char ch;
		111
		112	if (kb_disable)
		113	return;
		114
		115	ch = ski_getchar();
		116	if(ch == '\r')
		117	ch = '\n';
1507	vana	118	if (ch){
		119	if(kbd_uspace){
		120	chardev_push_character(&ski_uconsole, ch);
		121	virtual_interrupt(IRQ_KBD,NULL);
		122	}
		123	else {
		124	chardev_push_character(&ski_console, ch);
		125
		126	}
		127
		128	}
577	palkovsky	129	}
		130
		131	/* Called from getc(). */
583	jermar	132	static void ski_kb_enable(chardev_t *d)
577	palkovsky	133	{
		134	kb_disable = false;
		135	}
		136
		137	/* Called from getc(). */
		138	static void ski_kb_disable(chardev_t *d)
		139	{
		140	kb_disable = true;
		141	}
		142
		143
		144	static chardev_operations_t ski_ops = {
		145	.resume = ski_kb_enable,
		146	.suspend = ski_kb_disable,
892	vana	147	.write = ski_putchar,
		148	.read = ski_getchar_blocking
577	palkovsky	149	};
		150
		151
		152	/** Initialize debug console
		153	*
		154	* Issue SSC (Simulator System Call) to
		155	* to open debug console.
		156	*/
		157	void ski_init_console(void)
		158	{
892	vana	159	__asm__ volatile (
577	palkovsky	160	"mov r15=%0\n"
		161	"break 0x80000\n"
		162	:
		163	: "i" (SKI_INIT_CONSOLE)
		164	: "r15", "r8"
		165	);
		166
		167	chardev_initialize("ski_console", &ski_console, &ski_ops);
1507	vana	168	chardev_initialize("ski_uconsole", &ski_uconsole, &ski_ops);
577	palkovsky	169	stdin = &ski_console;
		170	stdout = &ski_console;
1507	vana	171
577	palkovsky	172	}
1507	vana	173	/** Setup console sysinfo (i.e. Keyboard IRQ)
		174	*
		175	* Because sysinfo neads memory allocation/dealocation
		176	* this functions should be called separetely from init.
		177	*
		178	*/
		179	void ski_set_console_sysinfo(void)
		180	{
		181	sysinfo_set_item_val("kbd",NULL,true);
		182	sysinfo_set_item_val("kbd.irq",NULL,IRQ_KBD);
		183	}

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