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

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