Subversion Repositories HelenOS-historic

Rev

Rev 1649 | Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | Download | RSS feed

  1. /*
  2.  * Copyright (C) 2006 Ondrej Palkovsky
  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.  
  29. /** @defgroup egafb EGA framebuffer
  30.  * @brief   HelenOS EGA framebuffer.
  31.  * @ingroup fbs
  32.  * @{
  33.  */
  34. /** @file
  35.  */
  36.  
  37.  
  38. #include <stdlib.h>
  39. #include <unistd.h>
  40. #include <align.h>
  41. #include <async.h>
  42. #include <ipc/ipc.h>
  43. #include <errno.h>
  44. #include <stdio.h>
  45. #include <ddi.h>
  46. #include <sysinfo.h>
  47. #include <as.h>
  48. #include <ipc/fb.h>
  49. #include <ipc/ipc.h>
  50. #include <ipc/ns.h>
  51. #include <ipc/services.h>
  52. #include <libarch/ddi.h>
  53.  
  54. #include "ega.h"
  55. #include "../console/screenbuffer.h"
  56. #include "main.h"
  57.  
  58. #define MAX_SAVED_SCREENS 256
  59. typedef struct saved_screen {
  60.     short *data;
  61. } saved_screen;
  62.  
  63. saved_screen saved_screens[MAX_SAVED_SCREENS];
  64.  
  65.  
  66. #define EGA_IO_ADDRESS 0x3d4
  67. #define EGA_IO_SIZE 2
  68.  
  69. #define NORMAL_COLOR       0x0f
  70. #define INVERTED_COLOR     0xf0
  71.  
  72. #define EGA_STYLE(fg,bg) ((fg) > (bg) ? NORMAL_COLOR : INVERTED_COLOR)
  73.  
  74. /* Allow only 1 connection */
  75. static int client_connected = 0;
  76.  
  77. static unsigned int scr_width;
  78. static unsigned int scr_height;
  79. static char *scr_addr;
  80.  
  81. static unsigned int style = NORMAL_COLOR;
  82.  
  83. static void clrscr(void)
  84. {
  85.     int i;
  86.    
  87.     for (i=0; i < scr_width*scr_height; i++) {
  88.         scr_addr[i*2] = ' ';
  89.         scr_addr[i*2+1] = style;
  90.     }
  91. }
  92.  
  93. static void cursor_goto(unsigned int row, unsigned int col)
  94. {
  95.     int ega_cursor;
  96.  
  97.     ega_cursor=col+scr_width*row;
  98.    
  99.     outb(EGA_IO_ADDRESS    , 0xe);
  100.     outb(EGA_IO_ADDRESS + 1, (ega_cursor >>8) & 0xff);
  101.     outb(EGA_IO_ADDRESS    , 0xf);
  102.     outb(EGA_IO_ADDRESS + 1, ega_cursor & 0xff);
  103. }
  104.  
  105. static void cursor_disable(void)
  106. {
  107.     uint8_t stat;
  108.  
  109.     outb(EGA_IO_ADDRESS , 0xa);
  110.     stat=inb(EGA_IO_ADDRESS + 1);
  111.     outb(EGA_IO_ADDRESS , 0xa);
  112.     outb(EGA_IO_ADDRESS +1 ,stat | (1<<5) );
  113. }
  114.  
  115. static void cursor_enable(void)
  116. {
  117.     uint8_t stat;
  118.  
  119.     outb(EGA_IO_ADDRESS , 0xa);
  120.     stat=inb(EGA_IO_ADDRESS + 1);
  121.     outb(EGA_IO_ADDRESS , 0xa);
  122.     outb(EGA_IO_ADDRESS +1 ,stat & (~(1<<5)) );
  123. }
  124.  
  125. static void scroll(int rows)
  126. {
  127.     int i;
  128.     if (rows > 0) {
  129.         memcpy (scr_addr,((char *)scr_addr) + rows * scr_width * 2, scr_width * scr_height * 2 - rows * scr_width * 2);
  130.         for (i = 0; i < rows * scr_width ; i ++)
  131.             (((short *)scr_addr) + scr_width * scr_height - rows * scr_width) [i] = ((style << 8) + ' ');
  132.     } else if (rows < 0) {
  133.  
  134.         memcpy (((char *)scr_addr) - rows * scr_width * 2 ,scr_addr ,scr_width * scr_height * 2 + rows * scr_width * 2);
  135.         for (i = 0; i < - rows * scr_width ; i++)
  136.             ((short *)scr_addr) [i] = ((style << 8 ) + ' ');
  137.     }
  138. }
  139.  
  140. static void printchar(char c, unsigned int row, unsigned int col)
  141. {
  142.     scr_addr[(row*scr_width + col)*2] = c;
  143.     scr_addr[(row*scr_width + col)*2+1] = style;
  144.    
  145.     cursor_goto(row,col+1);
  146. }
  147.  
  148. static void draw_text_data(keyfield_t *data)
  149. {
  150.     int i;
  151.  
  152.     for (i=0; i < scr_width*scr_height; i++) {
  153.         scr_addr[i*2] = data[i].character;
  154.         scr_addr[i*2+1] = EGA_STYLE(data[i].style.fg_color, data[i].style.bg_color);
  155.     }
  156. }
  157.  
  158. static int save_screen(void)
  159. {
  160.     int i;
  161.     short *mem;
  162.     for (i=0 ;( i < MAX_SAVED_SCREENS ) && (saved_screens[i].data); i++);
  163.     if (i == MAX_SAVED_SCREENS)
  164.         return EINVAL;
  165.     if (!(saved_screens[i].data=malloc( 2 * scr_width*scr_height )))
  166.         return ENOMEM;
  167.     memcpy (saved_screens[i].data ,scr_addr ,2 * scr_width * scr_height)
  168.         ;
  169.     return i;
  170. }
  171.  
  172. static int print_screen(int i)
  173. {
  174.     if (saved_screens[i].data)
  175.             memcpy (scr_addr,saved_screens[i].data, 2 * scr_width * scr_height);
  176.     else return EINVAL;
  177.     return i;
  178. }
  179.  
  180.  
  181. static void ega_client_connection(ipc_callid_t iid, ipc_call_t *icall)
  182. {
  183.     int retval;
  184.     ipc_callid_t callid;
  185.     ipc_call_t call;
  186.     char c;
  187.     unsigned int row, col;
  188.     int bgcolor,fgcolor;
  189.     keyfield_t *interbuf = NULL;
  190.     size_t intersize = 0;
  191.     int i;
  192.  
  193.     if (client_connected) {
  194.         ipc_answer_fast(iid, ELIMIT, 0,0);
  195.         return;
  196.     }
  197.     client_connected = 1;
  198.     ipc_answer_fast(iid, 0, 0, 0); /* Accept connection */
  199.  
  200.     while (1) {
  201.         callid = async_get_call(&call);
  202.         switch (IPC_GET_METHOD(call)) {
  203.         case IPC_M_PHONE_HUNGUP:
  204.             client_connected = 0;
  205.             ipc_answer_fast(callid,0,0,0);
  206.             return; /* Exit thread */
  207.         case IPC_M_AS_AREA_SEND:
  208.             /* We accept one area for data interchange */
  209.             intersize = IPC_GET_ARG2(call);
  210.             if (intersize >= scr_width*scr_height*sizeof(*interbuf)) {
  211.                 receive_comm_area(callid,&call,(void **)&interbuf);
  212.                 continue;
  213.             }
  214.             retval = EINVAL;
  215.             break;
  216.         case FB_DRAW_TEXT_DATA:
  217.             if (!interbuf) {
  218.                 retval = EINVAL;
  219.                 break;
  220.             }
  221.             draw_text_data(interbuf);
  222.             retval = 0;
  223.             break;
  224.         case FB_GET_CSIZE:
  225.             ipc_answer_fast(callid, 0, scr_height, scr_width);
  226.             continue;
  227.         case FB_CLEAR:
  228.             clrscr();
  229.             retval = 0;
  230.             break;
  231.         case FB_PUTCHAR:
  232.             c = IPC_GET_ARG1(call);
  233.             row = IPC_GET_ARG2(call);
  234.             col = IPC_GET_ARG3(call);
  235.             if (col >= scr_width || row >= scr_height) {
  236.                 retval = EINVAL;
  237.                 break;
  238.             }
  239.             printchar(c,row,col);
  240.             retval = 0;
  241.             break;
  242.         case FB_CURSOR_GOTO:
  243.             row = IPC_GET_ARG1(call);
  244.             col = IPC_GET_ARG2(call);
  245.             if (row >= scr_height || col >= scr_width) {
  246.                 retval = EINVAL;
  247.                 break;
  248.             }
  249.             cursor_goto(row,col);
  250.             retval = 0;
  251.             break;
  252.         case FB_SCROLL:
  253.             i = IPC_GET_ARG1(call);
  254.             if (i > scr_height || i < (- (int)scr_height)) {
  255.                 retval = EINVAL;
  256.                 break;
  257.             }
  258.             scroll(i);
  259.             retval = 0;
  260.             break;
  261.         case FB_CURSOR_VISIBILITY:
  262.             if(IPC_GET_ARG1(call))
  263.                 cursor_enable();
  264.             else
  265.                 cursor_disable();
  266.             retval = 0;
  267.             break;
  268.         case FB_SET_STYLE:
  269.             fgcolor = IPC_GET_ARG1(call);
  270.             bgcolor = IPC_GET_ARG2(call);
  271.             style = EGA_STYLE(fgcolor, bgcolor);
  272.             break;
  273.         case FB_VP_DRAW_PIXMAP:
  274.             i = IPC_GET_ARG2(call);
  275.             retval = print_screen(i);
  276.             break;
  277.         case FB_VP2PIXMAP:
  278.             retval = save_screen();
  279.             break;
  280.         case FB_DROP_PIXMAP:
  281.             i = IPC_GET_ARG1(call);
  282.             if (i >= MAX_SAVED_SCREENS) {
  283.                 retval = EINVAL;
  284.                 break;
  285.             }
  286.             if (saved_screens[i].data) {
  287.                 free(saved_screens[i].data);
  288.                 saved_screens[i].data = NULL;
  289.             }
  290.             break;
  291.  
  292.         default:
  293.             retval = ENOENT;
  294.         }
  295.         ipc_answer_fast(callid,retval,0,0);
  296.     }
  297. }
  298.  
  299. int ega_init(void)
  300. {
  301.     void *ega_ph_addr;
  302.     size_t sz;
  303.  
  304.  
  305.     ega_ph_addr=(void *)sysinfo_value("fb.address.physical");
  306.     scr_width=sysinfo_value("fb.width");
  307.     scr_height=sysinfo_value("fb.height");
  308.     iospace_enable(task_get_id(),(void *)EGA_IO_ADDRESS,2);
  309.  
  310.     sz = scr_width*scr_height*2;
  311.     scr_addr = as_get_mappable_page(sz);
  312.  
  313.     map_physmem(ega_ph_addr, scr_addr, ALIGN_UP(sz,PAGE_SIZE)>>PAGE_WIDTH,
  314.             AS_AREA_READ | AS_AREA_WRITE);
  315.  
  316.     async_set_client_connection(ega_client_connection);
  317.  
  318.     return 0;
  319. }
  320.  
  321.  
  322. /**
  323.  * @}
  324.  */
  325.