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  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. #include <stdlib.h>
  38. #include <unistd.h>
  39. #include <align.h>
  40. #include <async.h>
  41. #include <ipc/ipc.h>
  42. #include <errno.h>
  43. #include <stdio.h>
  44. #include <ddi.h>
  45. #include <sysinfo.h>
  46. #include <as.h>
  47. #include <ipc/fb.h>
  48. #include <ipc/ipc.h>
  49. #include <ipc/ns.h>
  50. #include <ipc/services.h>
  51. #include <libarch/ddi.h>
  52. #include <console/style.h>
  53. #include <console/color.h>
  54.  
  55. #include "ega.h"
  56. #include "../console/screenbuffer.h"
  57. #include "main.h"
  58.  
  59. #define MAX_SAVED_SCREENS 256
  60. typedef struct saved_screen {
  61.     short *data;
  62. } saved_screen;
  63.  
  64. saved_screen saved_screens[MAX_SAVED_SCREENS];
  65.  
  66. #define EGA_IO_ADDRESS 0x3d4
  67. #define EGA_IO_SIZE 2
  68.  
  69. int ega_normal_color = 0x0f;
  70. int ega_inverted_color = 0xf0;
  71.  
  72. #define NORMAL_COLOR        ega_normal_color      
  73. #define INVERTED_COLOR      ega_inverted_color
  74.  
  75. #define EGA_STYLE(fg,bg) ((fg) > (bg) ? NORMAL_COLOR : INVERTED_COLOR)
  76.  
  77. /* Allow only 1 connection */
  78. static int client_connected = 0;
  79.  
  80. static unsigned int scr_width;
  81. static unsigned int scr_height;
  82. static char *scr_addr;
  83.  
  84. static unsigned int style;
  85.  
  86. static void clrscr(void)
  87. {
  88.     int i;
  89.    
  90.     for (i = 0; i < scr_width * scr_height; i++) {
  91.         scr_addr[i * 2] = ' ';
  92.         scr_addr[i * 2 + 1] = style;
  93.     }
  94. }
  95.  
  96. static void cursor_goto(unsigned int row, unsigned int col)
  97. {
  98.     int ega_cursor;
  99.  
  100.     ega_cursor = col + scr_width * row;
  101.    
  102.     outb(EGA_IO_ADDRESS, 0xe);
  103.     outb(EGA_IO_ADDRESS + 1, (ega_cursor >> 8) & 0xff);
  104.     outb(EGA_IO_ADDRESS, 0xf);
  105.     outb(EGA_IO_ADDRESS + 1, ega_cursor & 0xff);
  106. }
  107.  
  108. static void cursor_disable(void)
  109. {
  110.     uint8_t stat;
  111.  
  112.     outb(EGA_IO_ADDRESS, 0xa);
  113.     stat=inb(EGA_IO_ADDRESS + 1);
  114.     outb(EGA_IO_ADDRESS, 0xa);
  115.     outb(EGA_IO_ADDRESS + 1, stat | (1 << 5));
  116. }
  117.  
  118. static void cursor_enable(void)
  119. {
  120.     uint8_t stat;
  121.  
  122.     outb(EGA_IO_ADDRESS, 0xa);
  123.     stat=inb(EGA_IO_ADDRESS + 1);
  124.     outb(EGA_IO_ADDRESS, 0xa);
  125.     outb(EGA_IO_ADDRESS + 1, stat & (~(1 << 5)));
  126. }
  127.  
  128. static void scroll(int rows)
  129. {
  130.     int i;
  131.     if (rows > 0) {
  132.         memmove(scr_addr, ((char *) scr_addr) + rows * scr_width * 2,
  133.             scr_width * scr_height * 2 - rows * scr_width * 2);
  134.         for (i = 0; i < rows * scr_width; i++)
  135.             (((short *) scr_addr) + scr_width * scr_height - rows *
  136.                 scr_width)[i] = ((style << 8) + ' ');
  137.     } else if (rows < 0) {
  138.         memmove(((char *)scr_addr) - rows * scr_width * 2, scr_addr,
  139.             scr_width * scr_height * 2 + rows * scr_width * 2);
  140.         for (i = 0; i < -rows * scr_width; i++)
  141.             ((short *)scr_addr)[i] = ((style << 8 ) + ' ');
  142.     }
  143. }
  144.  
  145. static void printchar(char c, unsigned int row, unsigned int col)
  146. {
  147.     scr_addr[(row * scr_width + col) * 2] = c;
  148.     scr_addr[(row * scr_width + col) * 2 + 1] = style;
  149.    
  150.     cursor_goto(row, col + 1);
  151. }
  152.  
  153. static void draw_text_data(keyfield_t *data)
  154. {
  155.     int i;
  156.  
  157.     for (i = 0; i < scr_width * scr_height; i++) {
  158.         scr_addr[i * 2] = data[i].character;
  159.         /* FIXME
  160.         scr_addr[i * 2 + 1] = EGA_STYLE(data[i].style.fg_color,
  161.             data[i].style.bg_color);
  162.         */
  163.     }
  164. }
  165.  
  166. static int save_screen(void)
  167. {
  168.     int i;
  169.  
  170.     for (i = 0; (i < MAX_SAVED_SCREENS) && (saved_screens[i].data); i++)
  171.         ;
  172.     if (i == MAX_SAVED_SCREENS)
  173.         return EINVAL;
  174.     if (!(saved_screens[i].data = malloc(2 * scr_width * scr_height)))
  175.         return ENOMEM;
  176.     memcpy(saved_screens[i].data, scr_addr, 2 * scr_width * scr_height);
  177.  
  178.     return i;
  179. }
  180.  
  181. static int print_screen(int i)
  182. {
  183.     if (saved_screens[i].data)
  184.         memcpy(scr_addr, saved_screens[i].data, 2 * scr_width *
  185.             scr_height);
  186.     else
  187.         return EINVAL;
  188.     return i;
  189. }
  190.  
  191.  
  192. static void ega_client_connection(ipc_callid_t iid, ipc_call_t *icall)
  193. {
  194.     int retval;
  195.     ipc_callid_t callid;
  196.     ipc_call_t call;
  197.     char c;
  198.     unsigned int row, col;
  199.     int bgcolor,fgcolor;
  200.     keyfield_t *interbuf = NULL;
  201.     size_t intersize = 0;
  202.     int i;
  203.  
  204.     if (client_connected) {
  205.         ipc_answer_0(iid, ELIMIT);
  206.         return;
  207.     }
  208.     client_connected = 1;
  209.     ipc_answer_0(iid, EOK); /* Accept connection */
  210.  
  211.     while (1) {
  212.         callid = async_get_call(&call);
  213.         switch (IPC_GET_METHOD(call)) {
  214.         case IPC_M_PHONE_HUNGUP:
  215.             client_connected = 0;
  216.             ipc_answer_0(callid, EOK);
  217.             return; /* Exit thread */
  218.         case IPC_M_SHARE_OUT:
  219.             /* We accept one area for data interchange */
  220.             intersize = IPC_GET_ARG2(call);
  221.             if (intersize >= scr_width * scr_height *
  222.                 sizeof(*interbuf)) {
  223.                 receive_comm_area(callid, &call,
  224.                     (void *) &interbuf);
  225.                 continue;
  226.             }
  227.             retval = EINVAL;
  228.             break;
  229.         case FB_DRAW_TEXT_DATA:
  230.             if (!interbuf) {
  231.                 retval = EINVAL;
  232.                 break;
  233.             }
  234.             draw_text_data(interbuf);
  235.             retval = 0;
  236.             break;
  237.         case FB_GET_CSIZE:
  238.             ipc_answer_2(callid, EOK, scr_height, scr_width);
  239.             continue;
  240.         case FB_CLEAR:
  241.             clrscr();
  242.             retval = 0;
  243.             break;
  244.         case FB_PUTCHAR:
  245.             c = IPC_GET_ARG1(call);
  246.             row = IPC_GET_ARG2(call);
  247.             col = IPC_GET_ARG3(call);
  248.             if (col >= scr_width || row >= scr_height) {
  249.                 retval = EINVAL;
  250.                 break;
  251.             }
  252.             printchar(c, row, col);
  253.             retval = 0;
  254.             break;
  255.         case FB_CURSOR_GOTO:
  256.             row = IPC_GET_ARG1(call);
  257.             col = IPC_GET_ARG2(call);
  258.             if (row >= scr_height || col >= scr_width) {
  259.                 retval = EINVAL;
  260.                 break;
  261.             }
  262.             cursor_goto(row, col);
  263.             retval = 0;
  264.             break;
  265.         case FB_SCROLL:
  266.             i = IPC_GET_ARG1(call);
  267.             if (i > scr_height || i < -((int) scr_height)) {
  268.                 retval = EINVAL;
  269.                 break;
  270.             }
  271.             scroll(i);
  272.             retval = 0;
  273.             break;
  274.         case FB_CURSOR_VISIBILITY:
  275.             if(IPC_GET_ARG1(call))
  276.                 cursor_enable();
  277.             else
  278.                 cursor_disable();
  279.             retval = 0;
  280.             break;
  281.         case FB_SET_STYLE:
  282.             retval = 0;
  283.             switch (IPC_GET_ARG1(call)) {
  284.             case STYLE_NORMAL: style = INVERTED_COLOR; break;
  285.             case STYLE_EMPHASIS: style = INVERTED_COLOR | 4; break;
  286.             default: retval = EINVAL;
  287.             }
  288.             break;
  289.         case FB_SET_COLOR:
  290.             fgcolor = IPC_GET_ARG1(call);
  291.             bgcolor = IPC_GET_ARG2(call);
  292.             style = (fgcolor & 7) | ((bgcolor & 7) << 4);
  293.             if (IPC_GET_ARG3(call) & CATTR_BRIGHT)
  294.                 style = style | 0x08;
  295.             retval = 0;
  296.             break;
  297.         case FB_SET_RGB_COLOR:
  298.             fgcolor = IPC_GET_ARG1(call);
  299.             bgcolor = IPC_GET_ARG2(call);
  300.             style = EGA_STYLE(fgcolor, bgcolor);
  301.             retval = 0;
  302.             break;
  303.         case FB_VP_DRAW_PIXMAP:
  304.             i = IPC_GET_ARG2(call);
  305.             retval = print_screen(i);
  306.             break;
  307.         case FB_VP2PIXMAP:
  308.             retval = save_screen();
  309.             break;
  310.         case FB_DROP_PIXMAP:
  311.             i = IPC_GET_ARG1(call);
  312.             if (i >= MAX_SAVED_SCREENS) {
  313.                 retval = EINVAL;
  314.                 break;
  315.             }
  316.             if (saved_screens[i].data) {
  317.                 free(saved_screens[i].data);
  318.                 saved_screens[i].data = NULL;
  319.             }
  320.             retval = 0;
  321.             break;
  322.  
  323.         default:
  324.             retval = ENOENT;
  325.         }
  326.         ipc_answer_0(callid, retval);
  327.     }
  328. }
  329.  
  330. int ega_init(void)
  331. {
  332.     void *ega_ph_addr;
  333.     size_t sz;
  334.  
  335.     ega_ph_addr = (void *) sysinfo_value("fb.address.physical");
  336.     scr_width = sysinfo_value("fb.width");
  337.     scr_height = sysinfo_value("fb.height");
  338.     if(sysinfo_value("fb.blinking"))
  339.     {
  340.             ega_normal_color &= 0x77;
  341.             ega_inverted_color &= 0x77;
  342.     }
  343.     style = NORMAL_COLOR;
  344.  
  345.     iospace_enable(task_get_id(), (void *) EGA_IO_ADDRESS, 2);
  346.  
  347.     sz = scr_width * scr_height * 2;
  348.     scr_addr = as_get_mappable_page(sz);
  349.  
  350.     physmem_map(ega_ph_addr, scr_addr, ALIGN_UP(sz, PAGE_SIZE) >>
  351.         PAGE_WIDTH, AS_AREA_READ | AS_AREA_WRITE);
  352.  
  353.     async_set_client_connection(ega_client_connection);
  354.  
  355.     return 0;
  356. }
  357.  
  358.  
  359. /**
  360.  * @}
  361.  */
  362.