WebSVN – HelenOS-historic – Blame – //kernel/trunk/arch/sparc64/src/console.c

Rev	Author	Line No.	Line
426	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
586	jermar	29	#include <arch/console.h>
669	jermar	30	#include <arch/types.h>
		31	#include <typedefs.h>
883	jermar	32	#include <genarch/fb/fb.h>
		33	#include <arch/drivers/fb.h>
894	jermar	34	#include <arch/drivers/keyboard.h>
893	jermar	35	#include <genarch/ofw/ofw.h>
		36	#include <console/chardev.h>
		37	#include <console/console.h>
		38	#include <arch/asm.h>
		39	#include <arch/register.h>
		40	#include <proc/thread.h>
		41	#include <synch/mutex.h>
426	jermar	42
893	jermar	43	static void ofw_sparc64_putchar(chardev_t *d, const char ch);
		44	static char ofw_sparc64_getchar(chardev_t *d);
		45	static void ofw_sparc64_suspend(chardev_t *d);
		46	static void ofw_sparc64_resume(chardev_t *d);
		47
		48	mutex_t canwork;
		49
		50	static volatile int ofw_console_active;
		51
		52	static chardev_t ofw_sparc64_console;
		53	static chardev_operations_t ofw_sparc64_console_ops = {
		54	.write = ofw_sparc64_putchar,
		55	.read = ofw_sparc64_getchar,
		56	.resume = ofw_sparc64_resume,
		57	.suspend = ofw_sparc64_suspend
		58	};
		59
		60	/** Initialize kernel console to use OpenFirmware services. */
		61	void ofw_sparc64_console_init(void)
586	jermar	62	{
893	jermar	63	chardev_initialize("ofw_sparc64_console", &ofw_sparc64_console, &ofw_sparc64_console_ops);
		64	stdin = &ofw_sparc64_console;
		65	stdout = &ofw_sparc64_console;
		66	mutex_initialize(&canwork);
		67	ofw_console_active = 1;
		68	}
		69
		70	/** Initialize kernel console to use framebuffer and keyboard directly. */
		71	void standalone_sparc64_console_init(void)
		72	{
		73	ofw_console_active = 0;
		74	stdin = NULL;
883	jermar	75	fb_init(FB_VIRT_ADDRESS, FB_X_RES, FB_Y_RES, FB_COLOR_DEPTH/8);
586	jermar	76	}
893	jermar	77
		78	/** Write one character using OpenFirmware.
		79	*
		80	* @param d Character device (ignored).
		81	* @param ch Character to be written.
		82	*/
		83	void ofw_sparc64_putchar(chardev_t *d, const char ch)
		84	{
		85	pstate_reg_t pstate;
		86
		87	/*
		88	* 32-bit OpenFirmware depends on PSTATE.AM bit set.
		89	*/
		90	pstate.value = pstate_read();
		91	pstate.am = true;
		92	pstate_write(pstate.value);
		93
		94	if (ch == '\n')
		95	ofw_putchar('\r');
		96	ofw_putchar(ch);
		97
		98	pstate.am = false;
		99	pstate_write(pstate.value);
		100	}
		101
		102	/** Read one character using OpenFirmware.
		103	*
		104	* The call is non-blocking.
		105	*
		106	* @param d Character device (ignored).
		107	* @return Character read or zero if no character was read.
		108	*/
		109	char ofw_sparc64_getchar(chardev_t *d)
		110	{
		111	char ch;
		112	pstate_reg_t pstate;
		113
		114	/*
		115	* 32-bit OpenFirmware depends on PSTATE.AM bit set.
		116	*/
		117	pstate.value = pstate_read();
		118	pstate.am = true;
		119	pstate_write(pstate.value);
		120
		121	ch = ofw_getchar();
		122
		123	pstate.am = false;
		124	pstate_write(pstate.value);
		125
		126	return ch;
		127	}
		128
		129	void ofw_sparc64_suspend(chardev_t *d)
		130	{
		131	mutex_lock(&canwork);
		132	}
		133
		134	void ofw_sparc64_resume(chardev_t *d)
		135	{
		136	mutex_unlock(&canwork);
		137	}
		138
		139	/** Kernel thread for pushing characters read from OFW to input buffer.
		140	*
		141	* @param arg Ignored.
		142	*/
		143	void kofwinput(void *arg)
		144	{
		145
		146	while (ofw_console_active) {
		147	char ch = 0;
		148
		149	mutex_lock(&canwork);
		150	mutex_unlock(&canwork);
		151
		152	ch = ofw_sparc64_getchar(NULL);
		153	if (ch) {
		154	if (ch == '\r')
		155	ch = '\n';
		156	chardev_push_character(&ofw_sparc64_console, ch);
		157	}
		158	thread_usleep(25000);
		159	}
		160	}

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(root)//kernel/trunk/arch/sparc64/src/console.c – Rev 894