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
		80	dtlb_insert_mapping(KBD_VIRT_ADDRESS, KBD_PHYS_ADDRESS, PAGESIZE_8K, true, false);
		81
1376	jermar	82	fb_init(FB_PHYS_ADDRESS, FB_X_RES, FB_Y_RES, FB_COLOR_DEPTH, FB_X_RES * FB_COLOR_DEPTH / 8);
895	jermar	83	i8042_init();
586	jermar	84	}
893	jermar	85
		86	/** Write one character using OpenFirmware.
		87	*
		88	* @param d Character device (ignored).
		89	* @param ch Character to be written.
		90	*/
		91	void ofw_sparc64_putchar(chardev_t *d, const char ch)
		92	{
		93	pstate_reg_t pstate;
		94
		95	/*
		96	* 32-bit OpenFirmware depends on PSTATE.AM bit set.
		97	*/
		98	pstate.value = pstate_read();
		99	pstate.am = true;
		100	pstate_write(pstate.value);
		101
		102	if (ch == '\n')
		103	ofw_putchar('\r');
		104	ofw_putchar(ch);
		105
		106	pstate.am = false;
		107	pstate_write(pstate.value);
		108	}
		109
		110	/** Read one character using OpenFirmware.
		111	*
		112	* The call is non-blocking.
		113	*
		114	* @param d Character device (ignored).
		115	* @return Character read or zero if no character was read.
		116	*/
		117	char ofw_sparc64_getchar(chardev_t *d)
		118	{
		119	char ch;
		120	pstate_reg_t pstate;
		121
		122	/*
		123	* 32-bit OpenFirmware depends on PSTATE.AM bit set.
		124	*/
		125	pstate.value = pstate_read();
		126	pstate.am = true;
		127	pstate_write(pstate.value);
		128
		129	ch = ofw_getchar();
		130
		131	pstate.am = false;
		132	pstate_write(pstate.value);
		133
		134	return ch;
		135	}
		136
		137	void ofw_sparc64_suspend(chardev_t *d)
		138	{
		139	mutex_lock(&canwork);
		140	}
		141
		142	void ofw_sparc64_resume(chardev_t *d)
		143	{
		144	mutex_unlock(&canwork);
		145	}
		146
		147	/** Kernel thread for pushing characters read from OFW to input buffer.
		148	*
		149	* @param arg Ignored.
		150	*/
		151	void kofwinput(void *arg)
		152	{
		153
		154	while (ofw_console_active) {
		155	char ch = 0;
		156
		157	mutex_lock(&canwork);
		158	mutex_unlock(&canwork);
		159
		160	ch = ofw_sparc64_getchar(NULL);
		161	if (ch) {
		162	if (ch == '\r')
		163	ch = '\n';
		164	chardev_push_character(&ofw_sparc64_console, ch);
		165	}
895	jermar	166	thread_usleep(KEYBOARD_POLL_PAUSE);
893	jermar	167	}
		168	}
895	jermar	169
		170	/** Kernel thread for polling keyboard.
		171	*
		172	* @param arg Ignored.
		173	*/
		174	void kkbdpoll(void *arg)
		175	{
		176	while (1) {
		177	i8042_poll();
		178	thread_usleep(KEYBOARD_POLL_PAUSE);
		179	}
		180	}

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(root)/kernel/trunk/arch/sparc64/src/console.c – Rev 1389