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>
895	jermar	34	#include <arch/drivers/i8042.h>
		35	#include <genarch/i8042/i8042.h>
893	jermar	36	#include <genarch/ofw/ofw.h>
		37	#include <console/chardev.h>
		38	#include <console/console.h>
		39	#include <arch/asm.h>
		40	#include <arch/register.h>
		41	#include <proc/thread.h>
		42	#include <synch/mutex.h>
426	jermar	43
895	jermar	44	#define KEYBOARD_POLL_PAUSE 50000 /* 50ms */
		45
893	jermar	46	static void ofw_sparc64_putchar(chardev_t *d, const char ch);
		47	static char ofw_sparc64_getchar(chardev_t *d);
		48	static void ofw_sparc64_suspend(chardev_t *d);
		49	static void ofw_sparc64_resume(chardev_t *d);
		50
		51	mutex_t canwork;
		52
		53	static volatile int ofw_console_active;
		54
		55	static chardev_t ofw_sparc64_console;
		56	static chardev_operations_t ofw_sparc64_console_ops = {
		57	.write = ofw_sparc64_putchar,
		58	.read = ofw_sparc64_getchar,
		59	.resume = ofw_sparc64_resume,
		60	.suspend = ofw_sparc64_suspend
		61	};
		62
		63	/** Initialize kernel console to use OpenFirmware services. */
		64	void ofw_sparc64_console_init(void)
586	jermar	65	{
893	jermar	66	chardev_initialize("ofw_sparc64_console", &ofw_sparc64_console, &ofw_sparc64_console_ops);
		67	stdin = &ofw_sparc64_console;
		68	stdout = &ofw_sparc64_console;
		69	mutex_initialize(&canwork);
		70	ofw_console_active = 1;
		71	}
		72
		73	/** Initialize kernel console to use framebuffer and keyboard directly. */
		74	void standalone_sparc64_console_init(void)
		75	{
		76	ofw_console_active = 0;
		77	stdin = NULL;
883	jermar	78	fb_init(FB_VIRT_ADDRESS, FB_X_RES, FB_Y_RES, FB_COLOR_DEPTH/8);
895	jermar	79	i8042_init();
586	jermar	80	}
893	jermar	81
		82	/** Write one character using OpenFirmware.
		83	*
		84	* @param d Character device (ignored).
		85	* @param ch Character to be written.
		86	*/
		87	void ofw_sparc64_putchar(chardev_t *d, const char ch)
		88	{
		89	pstate_reg_t pstate;
		90
		91	/*
		92	* 32-bit OpenFirmware depends on PSTATE.AM bit set.
		93	*/
		94	pstate.value = pstate_read();
		95	pstate.am = true;
		96	pstate_write(pstate.value);
		97
		98	if (ch == '\n')
		99	ofw_putchar('\r');
		100	ofw_putchar(ch);
		101
		102	pstate.am = false;
		103	pstate_write(pstate.value);
		104	}
		105
		106	/** Read one character using OpenFirmware.
		107	*
		108	* The call is non-blocking.
		109	*
		110	* @param d Character device (ignored).
		111	* @return Character read or zero if no character was read.
		112	*/
		113	char ofw_sparc64_getchar(chardev_t *d)
		114	{
		115	char ch;
		116	pstate_reg_t pstate;
		117
		118	/*
		119	* 32-bit OpenFirmware depends on PSTATE.AM bit set.
		120	*/
		121	pstate.value = pstate_read();
		122	pstate.am = true;
		123	pstate_write(pstate.value);
		124
		125	ch = ofw_getchar();
		126
		127	pstate.am = false;
		128	pstate_write(pstate.value);
		129
		130	return ch;
		131	}
		132
		133	void ofw_sparc64_suspend(chardev_t *d)
		134	{
		135	mutex_lock(&canwork);
		136	}
		137
		138	void ofw_sparc64_resume(chardev_t *d)
		139	{
		140	mutex_unlock(&canwork);
		141	}
		142
		143	/** Kernel thread for pushing characters read from OFW to input buffer.
		144	*
		145	* @param arg Ignored.
		146	*/
		147	void kofwinput(void *arg)
		148	{
		149
		150	while (ofw_console_active) {
		151	char ch = 0;
		152
		153	mutex_lock(&canwork);
		154	mutex_unlock(&canwork);
		155
		156	ch = ofw_sparc64_getchar(NULL);
		157	if (ch) {
		158	if (ch == '\r')
		159	ch = '\n';
		160	chardev_push_character(&ofw_sparc64_console, ch);
		161	}
895	jermar	162	thread_usleep(KEYBOARD_POLL_PAUSE);
893	jermar	163	}
		164	}
895	jermar	165
		166	/** Kernel thread for polling keyboard.
		167	*
		168	* @param arg Ignored.
		169	*/
		170	void kkbdpoll(void *arg)
		171	{
		172	while (1) {
		173	i8042_poll();
		174	thread_usleep(KEYBOARD_POLL_PAUSE);
		175	}
		176	}

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