WebSVN – HelenOS – Blame – /trunk/kernel/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
1702	cejka	29	/** @addtogroup sparc64
		30	* @{
		31	*/
		32	/** @file
		33	*/
		34
586	jermar	35	#include <arch/console.h>
669	jermar	36	#include <arch/types.h>
		37	#include <typedefs.h>
883	jermar	38	#include <genarch/fb/fb.h>
		39	#include <arch/drivers/fb.h>
895	jermar	40	#include <arch/drivers/i8042.h>
		41	#include <genarch/i8042/i8042.h>
893	jermar	42	#include <genarch/ofw/ofw.h>
		43	#include <console/chardev.h>
		44	#include <console/console.h>
		45	#include <arch/asm.h>
		46	#include <arch/register.h>
		47	#include <proc/thread.h>
		48	#include <synch/mutex.h>
897	jermar	49	#include <arch/mm/tlb.h>
426	jermar	50
895	jermar	51	#define KEYBOARD_POLL_PAUSE 50000 /* 50ms */
		52
893	jermar	53	static void ofw_sparc64_putchar(chardev_t *d, const char ch);
		54	static char ofw_sparc64_getchar(chardev_t *d);
		55	static void ofw_sparc64_suspend(chardev_t *d);
		56	static void ofw_sparc64_resume(chardev_t *d);
		57
		58	mutex_t canwork;
		59
		60	static volatile int ofw_console_active;
		61
		62	static chardev_t ofw_sparc64_console;
		63	static chardev_operations_t ofw_sparc64_console_ops = {
		64	.write = ofw_sparc64_putchar,
		65	.read = ofw_sparc64_getchar,
		66	.resume = ofw_sparc64_resume,
		67	.suspend = ofw_sparc64_suspend
		68	};
		69
		70	/** Initialize kernel console to use OpenFirmware services. */
		71	void ofw_sparc64_console_init(void)
586	jermar	72	{
893	jermar	73	chardev_initialize("ofw_sparc64_console", &ofw_sparc64_console, &ofw_sparc64_console_ops);
		74	stdin = &ofw_sparc64_console;
		75	stdout = &ofw_sparc64_console;
		76	mutex_initialize(&canwork);
		77	ofw_console_active = 1;
		78	}
		79
		80	/** Initialize kernel console to use framebuffer and keyboard directly. */
		81	void standalone_sparc64_console_init(void)
		82	{
		83	ofw_console_active = 0;
		84	stdin = NULL;
897	jermar	85
1410	jermar	86	kbd_init();
1376	jermar	87	fb_init(FB_PHYS_ADDRESS, FB_X_RES, FB_Y_RES, FB_COLOR_DEPTH, FB_X_RES * FB_COLOR_DEPTH / 8);
586	jermar	88	}
893	jermar	89
		90	/** Write one character using OpenFirmware.
		91	*
		92	* @param d Character device (ignored).
		93	* @param ch Character to be written.
		94	*/
		95	void ofw_sparc64_putchar(chardev_t *d, const char ch)
		96	{
		97	pstate_reg_t pstate;
		98
		99	/*
		100	* 32-bit OpenFirmware depends on PSTATE.AM bit set.
		101	*/
		102	pstate.value = pstate_read();
		103	pstate.am = true;
		104	pstate_write(pstate.value);
		105
		106	if (ch == '\n')
		107	ofw_putchar('\r');
		108	ofw_putchar(ch);
		109
		110	pstate.am = false;
		111	pstate_write(pstate.value);
		112	}
		113
		114	/** Read one character using OpenFirmware.
		115	*
		116	* The call is non-blocking.
		117	*
		118	* @param d Character device (ignored).
		119	* @return Character read or zero if no character was read.
		120	*/
		121	char ofw_sparc64_getchar(chardev_t *d)
		122	{
		123	char ch;
		124	pstate_reg_t pstate;
		125
		126	/*
		127	* 32-bit OpenFirmware depends on PSTATE.AM bit set.
		128	*/
		129	pstate.value = pstate_read();
		130	pstate.am = true;
		131	pstate_write(pstate.value);
		132
		133	ch = ofw_getchar();
		134
		135	pstate.am = false;
		136	pstate_write(pstate.value);
		137
		138	return ch;
		139	}
		140
		141	void ofw_sparc64_suspend(chardev_t *d)
		142	{
		143	mutex_lock(&canwork);
		144	}
		145
		146	void ofw_sparc64_resume(chardev_t *d)
		147	{
		148	mutex_unlock(&canwork);
		149	}
		150
		151	/** Kernel thread for pushing characters read from OFW to input buffer.
		152	*
		153	* @param arg Ignored.
		154	*/
		155	void kofwinput(void *arg)
		156	{
		157
		158	while (ofw_console_active) {
		159	char ch = 0;
		160
		161	mutex_lock(&canwork);
		162	mutex_unlock(&canwork);
		163
		164	ch = ofw_sparc64_getchar(NULL);
		165	if (ch) {
		166	if (ch == '\r')
		167	ch = '\n';
		168	chardev_push_character(&ofw_sparc64_console, ch);
		169	}
895	jermar	170	thread_usleep(KEYBOARD_POLL_PAUSE);
893	jermar	171	}
		172	}
895	jermar	173
		174	/** Kernel thread for polling keyboard.
		175	*
		176	* @param arg Ignored.
		177	*/
		178	void kkbdpoll(void *arg)
		179	{
		180	while (1) {
		181	i8042_poll();
		182	thread_usleep(KEYBOARD_POLL_PAUSE);
		183	}
		184	}
1702	cejka	185
		186	/** @}
		187	*/
		188

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(root)/trunk/kernel/arch/sparc64/src/console.c @ 1841 – Rev 1702