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/*
* Copyright (C) 2006 Jakub Vana
* 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 <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <ddi.h>
#include <sysinfo.h>
#include <align.h>
#include <as.h>
#include <ipc/fb.h>
#include <ipc/ipc.h>
#include <ipc/ns.h>
#include <ipc/services.h>
#include <kernel/errno.h>
#include <async.h>
#include "font-8x16.h"
#include "helenos.xbm"
#include "fb.h"
#define DEFAULT_BGCOLOR 0x000080
#define DEFAULT_FGCOLOR 0xffff00
/***************************************************************/
/* Pixel specific fuctions */
typedef void (*putpixel_fn_t)(unsigned int x, unsigned int y, int color);
typedef int (*getpixel_fn_t)(unsigned int x, unsigned int y);
struct {
__u8 *fbaddress ;
unsigned int xres ;
unsigned int yres ;
unsigned int scanline ;
unsigned int pixelbytes ;
putpixel_fn_t putpixel;
getpixel_fn_t getpixel;
} screen;
typedef struct {
int initialized;
unsigned int x, y;
unsigned int width, height;
/* Text support in window */
unsigned int rows, cols;
/* Style for text printing */
int bgcolor, fgcolor;
/* Auto-cursor position */
int cursor_active, cur_col, cur_row;
int cursor_shown;
} viewport_t;
#define MAX_VIEWPORTS 128
static viewport_t viewports[128];
/* Allow only 1 connection */
static int client_connected = 0;
#define RED(x, bits) ((x >> (16 + 8 - bits)) & ((1 << bits) - 1))
#define GREEN(x, bits) ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
#define BLUE(x, bits) ((x >> (8 - bits)) & ((1 << bits) - 1))
#define COL_WIDTH 8
#define ROW_BYTES (screen.scanline * FONT_SCANLINES)
#define POINTPOS(x, y) ((y) * screen.scanline + (x) * screen.pixelbytes)
/** Put pixel - 24-bit depth, 1 free byte */
static void putpixel_4byte(unsigned int x, unsigned int y, int color)
{
*((__u32 *)(screen.fbaddress + POINTPOS(x, y))) = color;
}
/** Return pixel color - 24-bit depth, 1 free byte */
static int getpixel_4byte(unsigned int x, unsigned int y)
{
return *((__u32 *)(screen.fbaddress + POINTPOS(x, y))) & 0xffffff;
}
/** Put pixel - 24-bit depth */
static void putpixel_3byte(unsigned int x, unsigned int y, int color)
{
unsigned int startbyte = POINTPOS(x, y);
#if (defined(BIG_ENDIAN) || defined(FB_BIG_ENDIAN))
screen.fbaddress[startbyte] = RED(color, 8);
screen.fbaddress[startbyte + 1] = GREEN(color, 8);
screen.fbaddress[startbyte + 2] = BLUE(color, 8);
#else
screen.fbaddress[startbyte + 2] = RED(color, 8);
screen.fbaddress[startbyte + 1] = GREEN(color, 8);
screen.fbaddress[startbyte + 0] = BLUE(color, 8);
#endif
}
/** Return pixel color - 24-bit depth */
static int getpixel_3byte(unsigned int x, unsigned int y)
{
unsigned int startbyte = POINTPOS(x, y);
#if (defined(BIG_ENDIAN) || defined(FB_BIG_ENDIAN))
return screen.fbaddress[startbyte] << 16 | screen.fbaddress[startbyte + 1] << 8 | screen.fbaddress[startbyte + 2];
#else
return screen.fbaddress[startbyte + 2] << 16 | screen.fbaddress[startbyte + 1] << 8 | screen.fbaddress[startbyte + 0];
#endif
}
/** Put pixel - 16-bit depth (5:6:5) */
static void putpixel_2byte(unsigned int x, unsigned int y, int color)
{
/* 5-bit, 6-bits, 5-bits */
*((__u16 *)(screen.fbaddress + POINTPOS(x, y))) = RED(color, 5) << 11 | GREEN(color, 6) << 5 | BLUE(color, 5);
}
/** Return pixel color - 16-bit depth (5:6:5) */
static int getpixel_2byte(unsigned int x, unsigned int y)
{
int color = *((__u16 *)(screen.fbaddress + POINTPOS(x, y)));
return (((color >> 11) & 0x1f) << (16 + 3)) | (((color >> 5) & 0x3f) << (8 + 2)) | ((color & 0x1f) << 3);
}
/** Put pixel - 8-bit depth (3:2:3) */
static void putpixel_1byte(unsigned int x, unsigned int y, int color)
{
screen.fbaddress[POINTPOS(x, y)] = RED(color, 3) << 5 | GREEN(color, 2) << 3 | BLUE(color, 3);
}
/** Return pixel color - 8-bit depth (3:2:3) */
static int getpixel_1byte(unsigned int x, unsigned int y)
{
int color = screen.fbaddress[POINTPOS(x, y)];
return (((color >> 5) & 0x7) << (16 + 5)) | (((color >> 3) & 0x3) << (8 + 6)) | ((color & 0x7) << 5);
}
/** Put pixel into viewport
*
* @param vp Viewport identification
* @param x X coord relative to viewport
* @param y Y coord relative to viewport
* @param color RGB color
*/
static void putpixel(int vp, unsigned int x, unsigned int y, int color)
{
screen.putpixel(viewports[vp].x + x, viewports[vp].y + y, color);
}
/** Get pixel from viewport */
static int getpixel(int vp, unsigned int x, unsigned int y)
{
return screen.getpixel(viewports[vp].x + x, viewports[vp].y + y);
}
/** Fill line with color BGCOLOR */
static void clear_line(int vp, unsigned int y)
{
unsigned int x;
for (x = 0; x < viewports[vp].width; x++)
putpixel(vp, x, y, viewports[vp].bgcolor);
}
/** Fill viewport with background color */
static void clear_port(int vp)
{
unsigned int y;
clear_line(vp, 0);
for (y = viewports[vp].y+1; y < viewports[vp].y+viewports[vp].height; y++) {
memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,y)],
&screen.fbaddress[POINTPOS(viewports[vp].x,viewports[vp].y)],
screen.pixelbytes * viewports[vp].width);
}
}
/** Scroll port up/down
*
* @param vp Viewport to scroll
* @param rows Positive number - scroll up, negative - scroll down
*/
static void scroll_port(int vp, int rows)
{
int y;
int startline;
int endline;
if (rows > 0) {
for (y=viewports[vp].y; y < viewports[vp].y+viewports[vp].height - rows*FONT_SCANLINES; y++)
memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,y)],
&screen.fbaddress[POINTPOS(viewports[vp].x,y + rows*FONT_SCANLINES)],
screen.pixelbytes * viewports[vp].width);
/* Clear last row */
startline = viewports[vp].y+FONT_SCANLINES*(viewports[vp].rows-1);
endline = viewports[vp].y + viewports[vp].height;
clear_line(vp, startline);
for (y=startline+1;y < endline; y++)
memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,y)],
&screen.fbaddress[POINTPOS(viewports[vp].x,startline)],
screen.pixelbytes * viewports[vp].width);
} else if (rows < 0) {
rows = -rows;
for (y=viewports[vp].y + viewports[vp].height-1; y >= viewports[vp].y + rows*FONT_SCANLINES; y--)
memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,y)],
&screen.fbaddress[POINTPOS(viewports[vp].x,y - rows*FONT_SCANLINES)],
screen.pixelbytes * viewports[vp].width);
/* Clear first row */
clear_line(0, viewports[vp].bgcolor);
for (y=1;y < rows*FONT_SCANLINES; y++)
memcpy(&screen.fbaddress[POINTPOS(viewports[vp].x,viewports[vp].y+y)],
&screen.fbaddress[POINTPOS(viewports[vp].x,viewports[vp].y)],
screen.pixelbytes * viewports[vp].width);
}
}
static void invert_pixel(int vp,unsigned int x, unsigned int y)
{
putpixel(vp, x, y, ~getpixel(vp, x, y));
}
/** Draw one line of glyph at a given position */
static void draw_glyph_line(int vp,unsigned int glline, unsigned int x, unsigned int y)
{
unsigned int i;
for (i = 0; i < 8; i++)
if (glline & (1 << (7 - i))) {
putpixel(vp, x + i, y, viewports[vp].fgcolor);
} else
putpixel(vp, x + i, y, viewports[vp].bgcolor);
}
/***************************************************************/
/* Character-console functions */
/** Draw character at given position */
static void draw_glyph(int vp,__u8 glyph, unsigned int sx, unsigned int sy)
{
unsigned int y;
for (y = 0; y < FONT_SCANLINES; y++)
draw_glyph_line(vp ,fb_font[glyph * FONT_SCANLINES + y], sx, sy + y);
}
/** Invert character at given position */
static void invert_char(int vp,unsigned int row, unsigned int col)
{
unsigned int x;
unsigned int y;
for (x = 0; x < COL_WIDTH; x++)
for (y = 0; y < FONT_SCANLINES; y++)
invert_pixel(vp, col * COL_WIDTH + x, row * FONT_SCANLINES + y);
}
static void draw_logo(int vp,unsigned int startx, unsigned int starty)
{
unsigned int x;
unsigned int y;
unsigned int byte;
unsigned int rowbytes;
rowbytes = (helenos_width - 1) / 8 + 1;
for (y = 0; y < helenos_height; y++)
for (x = 0; x < helenos_width; x++) {
byte = helenos_bits[rowbytes * y + x / 8];
byte >>= x % 8;
if (byte & 1)
putpixel(vp ,startx + x, starty + y, viewports[vp].fgcolor);
}
}
/***************************************************************/
/* Stdout specific functions */
/** Create new viewport
*
* @return New viewport number
*/
static int viewport_create(unsigned int x, unsigned int y,unsigned int width,
unsigned int height)
{
int i;
for (i=0; i < MAX_VIEWPORTS; i++) {
if (!viewports[i].initialized)
break;
}
if (i == MAX_VIEWPORTS)
return ELIMIT;
if (width ==0 || height == 0 ||
x+width > screen.xres || y+height > screen.yres)
return EINVAL;
if (width < FONT_SCANLINES || height < COL_WIDTH)
return EINVAL;
viewports[i].x = x;
viewports[i].y = y;
viewports[i].width = width;
viewports[i].height = height;
viewports[i].rows = height / FONT_SCANLINES;
viewports[i].cols = width / COL_WIDTH;
viewports[i].bgcolor = DEFAULT_BGCOLOR;
viewports[i].fgcolor = DEFAULT_FGCOLOR;
viewports[i].cur_col = 0;
viewports[i].cur_row = 0;
viewports[i].cursor_active = 0;
viewports[i].initialized = 1;
return i;
}
/** Initialize framebuffer as a chardev output device
*
* @param addr Address of theframebuffer
* @param x Screen width in pixels
* @param y Screen height in pixels
* @param bpp Bits per pixel (8, 16, 24, 32)
* @param scan Bytes per one scanline
*
*/
static void screen_init(void *addr, unsigned int xres, unsigned int yres, unsigned int bpp, unsigned int scan)
{
switch (bpp) {
case 8:
screen.putpixel = putpixel_1byte;
screen.getpixel = getpixel_1byte;
screen.pixelbytes = 1;
break;
case 16:
screen.putpixel = putpixel_2byte;
screen.getpixel = getpixel_2byte;
screen.pixelbytes = 2;
break;
case 24:
screen.putpixel = putpixel_3byte;
screen.getpixel = getpixel_3byte;
screen.pixelbytes = 3;
break;
case 32:
screen.putpixel = putpixel_4byte;
screen.getpixel = getpixel_4byte;
screen.pixelbytes = 4;
break;
}
screen.fbaddress = (unsigned char *) addr;
screen.xres = xres;
screen.yres = yres;
screen.scanline = scan;
/* Create first viewport */
viewport_create(0,0,xres,yres);
clear_port(0);
}
static void cursor_hide(int vp)
{
viewport_t *vport = &viewports[vp];
if (vport->cursor_active && vport->cursor_shown) {
invert_char(vp, vport->cur_row, vport->cur_col);
vport->cursor_shown = 0;
}
}
static void cursor_print(int vp)
{
viewport_t *vport = &viewports[vp];
/* Do not check for cursor_shown */
if (vport->cursor_active) {
invert_char(vp, vport->cur_row, vport->cur_col);
vport->cursor_shown = 1;
}
}
static void cursor_blink(int vp)
{
viewport_t *vport = &viewports[vp];
if (vport->cursor_shown)
cursor_hide(vp);
else
cursor_print(vp);
}
/** Draw character at given position relative to viewport
*
* @param vp Viewport identification
* @param c Character to print
* @param row Screen position relative to viewport
* @param col Screen position relative to viewport
*/
static void draw_char(int vp, char c, unsigned int row, unsigned int col)
{
viewport_t *vport = &viewports[vp];
/* Optimize - do not hide cursor if we are going to overwrite it */
if (vport->cursor_active && vport->cursor_shown &&
(vport->cur_col != col || vport->cur_row != row))
invert_char(vp, vport->cur_row, vport->cur_col);
draw_glyph(vp, c, col * COL_WIDTH, row * FONT_SCANLINES);
vport->cur_col = col;
vport->cur_row = row;
vport->cur_col++;
if (vport->cur_col>= vport->cols) {
vport->cur_col = 0;
vport->cur_row++;
if (vport->cur_row >= vport->rows)
vport->cur_row--;
}
cursor_print(vp);
}
/** Function for handling connections to FB
*
*/
static void fb_client_connection(ipc_callid_t iid, ipc_call_t *icall)
{
ipc_callid_t callid;
ipc_call_t call;
int retval;
int i;
unsigned int row,col;
char c;
int vp = 0;
viewport_t *vport = &viewports[0];
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_timeout(&call,250000);
if (!callid) {
cursor_blink(vp);
continue;
}
switch (IPC_GET_METHOD(call)) {
case IPC_M_PHONE_HUNGUP:
client_connected = 0;
/* cleanup other viewports */
for (i=1; i < MAX_VIEWPORTS; i++)
vport->initialized = 0;
ipc_answer_fast(callid,0,0,0);
return; /* Exit thread */
case FB_PUTCHAR:
c = IPC_GET_ARG1(call);
row = IPC_GET_ARG2(call);
col = IPC_GET_ARG3(call);
if (row >= vport->rows || col >= vport->cols) {
retval = EINVAL;
break;
}
ipc_answer_fast(callid,0,0,0);
draw_char(vp, c, row, col);
continue; /* msg already answered */
case FB_CLEAR:
clear_port(vp);
cursor_print(vp);
retval = 0;
break;
case FB_CURSOR_GOTO:
row = IPC_GET_ARG1(call);
col = IPC_GET_ARG2(call);
if (row >= vport->rows || col >= vport->cols) {
retval = EINVAL;
break;
}
retval = 0;
cursor_hide(vp);
vport->cur_col = col;
vport->cur_row = row;
cursor_print(vp);
break;
case FB_CURSOR_VISIBILITY:
cursor_hide(vp);
vport->cursor_active = IPC_GET_ARG1(call);
cursor_print(vp);
retval = 0;
break;
case FB_GET_CSIZE:
ipc_answer_fast(callid, 0, vport->rows, vport->cols);
continue;
case FB_SCROLL:
i = IPC_GET_ARG1(call);
if (i > vport->rows || i < (- (int)vport->rows)) {
retval = EINVAL;
break;
}
cursor_hide(vp);
scroll_port(vp, i);
cursor_print(vp);
retval = 0;
break;
case FB_VIEWPORT_SWITCH:
i = IPC_GET_ARG1(call);
if (i < 0 || i >= MAX_VIEWPORTS) {
retval = EINVAL;
break;
}
if (! viewports[i].initialized ) {
retval = EADDRNOTAVAIL;
break;
}
cursor_hide(vp);
vp = i;
vport = &viewports[vp];
cursor_print(vp);
retval = 0;
break;
case FB_VIEWPORT_CREATE:
retval = viewport_create(IPC_GET_ARG1(call) >> 16,
IPC_GET_ARG1(call) & 0xffff,
IPC_GET_ARG2(call) >> 16,
IPC_GET_ARG2(call) & 0xffff);
break;
case FB_VIEWPORT_DELETE:
i = IPC_GET_ARG1(call);
if (i < 0 || i >= MAX_VIEWPORTS) {
retval = EINVAL;
break;
}
if (! viewports[i].initialized ) {
retval = EADDRNOTAVAIL;
break;
}
viewports[i].initialized = 0;
retval = 0;
break;
case FB_SET_STYLE:
vport->fgcolor = IPC_GET_ARG1(call);
vport->bgcolor = IPC_GET_ARG2(call);
retval = 0;
break;
case FB_GET_RESOLUTION:
ipc_answer_fast(callid, 0, screen.xres,screen.yres);
continue;
default:
retval = ENOENT;
}
ipc_answer_fast(callid,retval,0,0);
}
}
/** Initialization of framebuffer */
int fb_init(void)
{
void *fb_ph_addr;
unsigned int fb_width;
unsigned int fb_height;
unsigned int fb_bpp;
unsigned int fb_scanline;
void *fb_addr;
size_t asz;
async_set_client_connection(fb_client_connection);
fb_ph_addr=(void *)sysinfo_value("fb.address.physical");
fb_width=sysinfo_value("fb.width");
fb_height=sysinfo_value("fb.height");
fb_bpp=sysinfo_value("fb.bpp");
fb_scanline=sysinfo_value("fb.scanline");
asz = fb_scanline*fb_height;
fb_addr = as_get_mappable_page(asz);
map_physmem(fb_ph_addr, fb_addr, ALIGN_UP(asz,PAGE_SIZE) >>PAGE_WIDTH,
AS_AREA_READ | AS_AREA_WRITE | AS_AREA_CACHEABLE);
screen_init(fb_addr, fb_width, fb_height, fb_bpp, fb_scanline);
return 0;
}