WebSVN – HelenOS – Diff – /trunk/uspace/srv/fb/ega.c


/*
 * Copyright (C) 2006 Ondrej Palkovsky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#include <align.h>
#include <async.h>
#include <ipc/ipc.h>
#include <errno.h>
#include <stdio.h>
#include <ddi.h>
#include <sysinfo.h>
#include <as.h>
#include <ipc/fb.h>
#include <ipc/ipc.h>
#include <ipc/ns.h>
#include <ipc/services.h>
 
#include "ega.h"
 
/* Allow only 1 connection */
static int client_connected = 0;
 
static unsigned int scr_width;
static unsigned int scr_height;
static char *scr_addr;
 
static void clrscr(void)
{
    int i;
   
    for (i=0; i < scr_width*scr_height; i++)
        scr_addr[i*2] = ' ';
}
 
static void printchar(char c, unsigned int row, unsigned int col)
{
    scr_addr[(row*scr_width + col)*2] = c;
}
 
static void ega_client_connection(ipc_callid_t iid, ipc_call_t *icall)
{
    int retval;
    ipc_callid_t callid;
    ipc_call_t call;
    char c;
    unsigned int row, col;
 
    if (client_connected) {
        ipc_answer_fast(iid, ELIMIT, 0,0);
        return;
    }
    client_connected = 1;
    ipc_answer_fast(iid, 0, 0, 0); /* Accept connection */
 
    while (1) {
        callid = async_get_call(&call);
        switch (IPC_GET_METHOD(call)) {
        case IPC_M_PHONE_HUNGUP:
            client_connected = 0;
            ipc_answer_fast(callid,0,0,0);
            return; /* Exit thread */
        case FB_GET_CSIZE:
            ipc_answer_fast(callid, 0, scr_height, scr_width);
            continue;
        case FB_CLEAR:
            clrscr();
            retval = 0;
            break;
        case FB_PUTCHAR:
            c = IPC_GET_ARG1(call);
            row = IPC_GET_ARG2(call);
            col = IPC_GET_ARG3(call);
            if (row >= scr_width || col >= scr_height) {
                retval = EINVAL;
                break;
            }
            printchar(c,row,col);
            retval = 0;
            break;
        default:
            retval = ENOENT;
        }
        ipc_answer_fast(callid,retval,0,0);
    }
}
 
int ega_init(void)
{
    void *ega_ph_addr;
    size_t sz;
 
 
    ega_ph_addr=(void *)sysinfo_value("fb.address.physical");
    scr_width=sysinfo_value("fb.width");
    scr_height=sysinfo_value("fb.height");
 
    sz = scr_width*scr_height*2;
    scr_addr = as_get_mappable_page(sz);
 
    map_physmem(ega_ph_addr, scr_addr, ALIGN_UP(sz,PAGE_SIZE)>>PAGE_WIDTH,
            AS_AREA_READ | AS_AREA_WRITE);
 
    async_set_client_connection(ega_client_connection);
 
    clrscr();
 
    return 0;
}
 

Rev 1501	Rev 1530
1	/*	1	/*
2	* Copyright (C) 2006 Ondrej Palkovsky	2	* Copyright (C) 2006 Ondrej Palkovsky
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	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	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.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	#include <align.h>	29	#include <align.h>
30	#include <async.h>	30	#include <async.h>
31	#include <ipc/ipc.h>	31	#include <ipc/ipc.h>
32	#include <errno.h>	32	#include <errno.h>
33	#include <stdio.h>	33	#include <stdio.h>
34	#include <ddi.h>	34	#include <ddi.h>
35	#include <sysinfo.h>	35	#include <sysinfo.h>
36	#include <as.h>	36	#include <as.h>
37	#include <ipc/fb.h>	37	#include <ipc/fb.h>
38	#include <ipc/ipc.h>	38	#include <ipc/ipc.h>
39	#include <ipc/ns.h>	39	#include <ipc/ns.h>
40	#include <ipc/services.h>	40	#include <ipc/services.h>
41		41
42	#include "ega.h"	42	#include "ega.h"
43		43
44	/* Allow only 1 connection */	44	/* Allow only 1 connection */
45	static int client_connected = 0;	45	static int client_connected = 0;
46		46
47	static unsigned int scr_width;	47	static unsigned int scr_width;
48	static unsigned int scr_height;	48	static unsigned int scr_height;
49	static char *scr_addr;	49	static char *scr_addr;
50		50
51	static void clrscr(void)	51	static void clrscr(void)
52	{	52	{
53	int i;	53	int i;
54		54
55	for (i=0; i < scr_width*scr_height; i++)	55	for (i=0; i < scr_width*scr_height; i++)
56	scr_addr[i*2] = ' ';	56	scr_addr[i*2] = ' ';
57	}	57	}
58		58
59	static void printchar(char c, unsigned int row, unsigned int col)	59	static void printchar(char c, unsigned int row, unsigned int col)
60	{	60	{
61	scr_addr[(rowscr_width + col)2] = c;	61	scr_addr[(rowscr_width + col)2] = c;
62	}	62	}
63		63
64	static void ega_client_connection(ipc_callid_t iid, ipc_call_t *icall)	64	static void ega_client_connection(ipc_callid_t iid, ipc_call_t *icall)
65	{	65	{
66	int retval;	66	int retval;
67	ipc_callid_t callid;	67	ipc_callid_t callid;
68	ipc_call_t call;	68	ipc_call_t call;
69	char c;	69	char c;
70	unsigned int row, col;	70	unsigned int row, col;
71		71
72	if (client_connected) {	72	if (client_connected) {
73	ipc_answer_fast(iid, ELIMIT, 0,0);	73	ipc_answer_fast(iid, ELIMIT, 0,0);
74	return;	74	return;
75	}	75	}
76	client_connected = 1;	76	client_connected = 1;
77	ipc_answer_fast(iid, 0, 0, 0); /* Accept connection */	77	ipc_answer_fast(iid, 0, 0, 0); /* Accept connection */
78		78
79	while (1) {	79	while (1) {
80	callid = async_get_call(&call);	80	callid = async_get_call(&call);
81	switch (IPC_GET_METHOD(call)) {	81	switch (IPC_GET_METHOD(call)) {
82	case IPC_M_PHONE_HUNGUP:	82	case IPC_M_PHONE_HUNGUP:
83	client_connected = 0;	83	client_connected = 0;
84	ipc_answer_fast(callid,0,0,0);	84	ipc_answer_fast(callid,0,0,0);
85	return; /* Exit thread */	85	return; /* Exit thread */
86	case FB_GET_CSIZE:	86	case FB_GET_CSIZE:
87	ipc_answer_fast(callid, 0, scr_width, scr_height);	87	ipc_answer_fast(callid, 0, scr_height, scr_width);
88	continue;	88	continue;
89	case FB_CLEAR:	89	case FB_CLEAR:
90	clrscr();	90	clrscr();
91	retval = 0;	91	retval = 0;
92	break;	92	break;
93	case FB_PUTCHAR:	93	case FB_PUTCHAR:
94	c = IPC_GET_ARG1(call);	94	c = IPC_GET_ARG1(call);
95	row = IPC_GET_ARG2(call);	95	row = IPC_GET_ARG2(call);
96	col = IPC_GET_ARG3(call);	96	col = IPC_GET_ARG3(call);
97	if (row >= scr_width \|\| col >= scr_height) {	97	if (row >= scr_width \|\| col >= scr_height) {
98	retval = EINVAL;	98	retval = EINVAL;
99	break;	99	break;
100	}	100	}
101	printchar(c,row,col);	101	printchar(c,row,col);
102	retval = 0;	102	retval = 0;
103	break;	103	break;
104	default:	104	default:
105	retval = ENOENT;	105	retval = ENOENT;
106	}	106	}
107	ipc_answer_fast(callid,retval,0,0);	107	ipc_answer_fast(callid,retval,0,0);
108	}	108	}
109	}	109	}
110		110
111	int ega_init(void)	111	int ega_init(void)
112	{	112	{
113	void *ega_ph_addr;	113	void *ega_ph_addr;
114	size_t sz;	114	size_t sz;
115		115
116		116
117	ega_ph_addr=(void *)sysinfo_value("fb.address.physical");	117	ega_ph_addr=(void *)sysinfo_value("fb.address.physical");
118	scr_width=sysinfo_value("fb.width");	118	scr_width=sysinfo_value("fb.width");
119	scr_height=sysinfo_value("fb.height");	119	scr_height=sysinfo_value("fb.height");
120		120
121	sz = scr_widthscr_height2;	121	sz = scr_widthscr_height2;
122	scr_addr = as_get_mappable_page(sz);	122	scr_addr = as_get_mappable_page(sz);
123		123
124	map_physmem(ega_ph_addr, scr_addr, ALIGN_UP(sz,PAGE_SIZE)>>PAGE_WIDTH,	124	map_physmem(ega_ph_addr, scr_addr, ALIGN_UP(sz,PAGE_SIZE)>>PAGE_WIDTH,
125	AS_AREA_READ \| AS_AREA_WRITE);	125	AS_AREA_READ \| AS_AREA_WRITE);
126		126
127	async_set_client_connection(ega_client_connection);	127	async_set_client_connection(ega_client_connection);
128		128
129	clrscr();	129	clrscr();
130		130
131	return 0;	131	return 0;
132	}	132	}
133		133

Subversion Repositories HelenOS

(root)/trunk/uspace/srv/fb/ega.c @ 3783 – Rev 1501 → 1530