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/* |
* 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. |
*/ |
|
/** @defgroup egafb EGA framebuffer |
* @brief HelenOS EGA framebuffer. |
* @ingroup fbs |
* @{ |
*/ |
/** @file |
*/ |
|
#include <stdlib.h> |
#include <unistd.h> |
#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 <libarch/ddi.h> |
|
#include "ega.h" |
#include "../console/screenbuffer.h" |
#include "main.h" |
|
#define MAX_SAVED_SCREENS 256 |
typedef struct saved_screen { |
short *data; |
} saved_screen; |
|
saved_screen saved_screens[MAX_SAVED_SCREENS]; |
|
#define EGA_IO_ADDRESS 0x3d4 |
#define EGA_IO_SIZE 2 |
|
#define NORMAL_COLOR 0x0f |
#define INVERTED_COLOR 0xf0 |
|
#define EGA_STYLE(fg,bg) ((fg) > (bg) ? NORMAL_COLOR : INVERTED_COLOR) |
|
/* Allow only 1 connection */ |
static int client_connected = 0; |
|
static unsigned int scr_width; |
static unsigned int scr_height; |
static char *scr_addr; |
|
static unsigned int style = NORMAL_COLOR; |
|
static void clrscr(void) |
{ |
int i; |
|
for (i = 0; i < scr_width*scr_height; i++) { |
scr_addr[i * 2] = ' '; |
scr_addr[i * 2 + 1] = style; |
} |
} |
|
static void cursor_goto(unsigned int row, unsigned int col) |
{ |
int ega_cursor; |
|
ega_cursor = col + scr_width * row; |
|
outb(EGA_IO_ADDRESS, 0xe); |
outb(EGA_IO_ADDRESS + 1, (ega_cursor >> 8) & 0xff); |
outb(EGA_IO_ADDRESS, 0xf); |
outb(EGA_IO_ADDRESS + 1, ega_cursor & 0xff); |
} |
|
static void cursor_disable(void) |
{ |
uint8_t stat; |
|
outb(EGA_IO_ADDRESS, 0xa); |
stat=inb(EGA_IO_ADDRESS + 1); |
outb(EGA_IO_ADDRESS, 0xa); |
outb(EGA_IO_ADDRESS + 1, stat | (1 << 5)); |
} |
|
static void cursor_enable(void) |
{ |
uint8_t stat; |
|
outb(EGA_IO_ADDRESS, 0xa); |
stat=inb(EGA_IO_ADDRESS + 1); |
outb(EGA_IO_ADDRESS, 0xa); |
outb(EGA_IO_ADDRESS + 1, stat & (~(1 << 5))); |
} |
|
static void scroll(int rows) |
{ |
int i; |
if (rows > 0) { |
memcpy(scr_addr, ((char *) scr_addr) + rows * scr_width * 2, |
scr_width * scr_height * 2 - rows * scr_width * 2); |
for (i = 0; i < rows * scr_width; i++) |
(((short *) scr_addr) + scr_width * scr_height - rows * |
scr_width)[i] = ((style << 8) + ' '); |
} else if (rows < 0) { |
memcpy(((char *)scr_addr) - rows * scr_width * 2, scr_addr, |
scr_width * scr_height * 2 + rows * scr_width * 2); |
for (i = 0; i < -rows * scr_width; i++) |
((short *)scr_addr)[i] = ((style << 8 ) + ' '); |
} |
} |
|
static void printchar(char c, unsigned int row, unsigned int col) |
{ |
scr_addr[(row * scr_width + col) * 2] = c; |
scr_addr[(row * scr_width + col) * 2 + 1] = style; |
|
cursor_goto(row, col + 1); |
} |
|
static void draw_text_data(keyfield_t *data) |
{ |
int i; |
|
for (i = 0; i < scr_width * scr_height; i++) { |
scr_addr[i * 2] = data[i].character; |
scr_addr[i * 2 + 1] = EGA_STYLE(data[i].style.fg_color, |
data[i].style.bg_color); |
} |
} |
|
static int save_screen(void) |
{ |
int i; |
|
for (i=0; (i < MAX_SAVED_SCREENS) && (saved_screens[i].data); i++) |
; |
if (i == MAX_SAVED_SCREENS) |
return EINVAL; |
if (!(saved_screens[i].data = malloc(2 * scr_width * scr_height))) |
return ENOMEM; |
memcpy(saved_screens[i].data, scr_addr, 2 * scr_width * scr_height); |
|
return i; |
} |
|
static int print_screen(int i) |
{ |
if (saved_screens[i].data) |
memcpy(scr_addr, saved_screens[i].data, 2 * scr_width * |
scr_height); |
else |
return EINVAL; |
return i; |
} |
|
|
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; |
int bgcolor,fgcolor; |
keyfield_t *interbuf = NULL; |
size_t intersize = 0; |
int i; |
|
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 IPC_M_AS_AREA_SEND: |
/* We accept one area for data interchange */ |
intersize = IPC_GET_ARG2(call); |
if (intersize >= scr_width * scr_height * |
sizeof(*interbuf)) { |
receive_comm_area(callid, &call, (void *) |
&interbuf); |
continue; |
} |
retval = EINVAL; |
break; |
case FB_DRAW_TEXT_DATA: |
if (!interbuf) { |
retval = EINVAL; |
break; |
} |
draw_text_data(interbuf); |
retval = 0; |
break; |
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 (col >= scr_width || row >= scr_height) { |
retval = EINVAL; |
break; |
} |
printchar(c, row, col); |
retval = 0; |
break; |
case FB_CURSOR_GOTO: |
row = IPC_GET_ARG1(call); |
col = IPC_GET_ARG2(call); |
if (row >= scr_height || col >= scr_width) { |
retval = EINVAL; |
break; |
} |
cursor_goto(row, col); |
retval = 0; |
break; |
case FB_SCROLL: |
i = IPC_GET_ARG1(call); |
if (i > scr_height || i < -((int) scr_height)) { |
retval = EINVAL; |
break; |
} |
scroll(i); |
retval = 0; |
break; |
case FB_CURSOR_VISIBILITY: |
if(IPC_GET_ARG1(call)) |
cursor_enable(); |
else |
cursor_disable(); |
retval = 0; |
break; |
case FB_SET_STYLE: |
fgcolor = IPC_GET_ARG1(call); |
bgcolor = IPC_GET_ARG2(call); |
style = EGA_STYLE(fgcolor, bgcolor); |
retval = 0; |
break; |
case FB_VP_DRAW_PIXMAP: |
i = IPC_GET_ARG2(call); |
retval = print_screen(i); |
break; |
case FB_VP2PIXMAP: |
retval = save_screen(); |
break; |
case FB_DROP_PIXMAP: |
i = IPC_GET_ARG1(call); |
if (i >= MAX_SAVED_SCREENS) { |
retval = EINVAL; |
break; |
} |
if (saved_screens[i].data) { |
free(saved_screens[i].data); |
saved_screens[i].data = NULL; |
} |
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"); |
iospace_enable(task_get_id(), (void *) EGA_IO_ADDRESS, 2); |
|
sz = scr_width * scr_height * 2; |
scr_addr = as_get_mappable_page(sz, (int) |
sysinfo_value("fb.address.color")); |
|
physmem_map(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); |
|
return 0; |
} |
|
|
/** |
* @} |
*/ |