Subversion Repositories HelenOS

Rev

Rev 4025 | Rev 4165 | 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. #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. #include <sys/types.h>
  55.  
  56. #include "ega.h"
  57. #include "../console/screenbuffer.h"
  58. #include "main.h"
  59.  
  60. #define MAX_SAVED_SCREENS 256
  61. typedef struct saved_screen {
  62.     short *data;
  63. } saved_screen;
  64.  
  65. saved_screen saved_screens[MAX_SAVED_SCREENS];
  66.  
  67. #define EGA_IO_BASE ((ioport8_t *) 0x3d4)
  68. #define EGA_IO_SIZE 2
  69.  
  70. int ega_normal_color = 0x0f;
  71. int ega_inverted_color = 0xf0;
  72.  
  73. #define NORMAL_COLOR        ega_normal_color      
  74. #define INVERTED_COLOR      ega_inverted_color
  75.  
  76. /* Allow only 1 connection */
  77. static int client_connected = 0;
  78.  
  79. static unsigned int scr_width;
  80. static unsigned int scr_height;
  81. static char *scr_addr;
  82.  
  83. static unsigned int style;
  84.  
  85. static unsigned attr_to_ega_style(const attrs_t *a);
  86.  
  87. static void clrscr(void)
  88. {
  89.     int i;
  90.    
  91.     for (i = 0; i < scr_width * scr_height; i++) {
  92.         scr_addr[i * 2] = ' ';
  93.         scr_addr[i * 2 + 1] = style;
  94.     }
  95. }
  96.  
  97. static void cursor_goto(unsigned int row, unsigned int col)
  98. {
  99.     int ega_cursor;
  100.  
  101.     ega_cursor = col + scr_width * row;
  102.    
  103.     pio_write_8(EGA_IO_BASE, 0xe);
  104.     pio_write_8(EGA_IO_BASE + 1, (ega_cursor >> 8) & 0xff);
  105.     pio_write_8(EGA_IO_BASE, 0xf);
  106.     pio_write_8(EGA_IO_BASE + 1, ega_cursor & 0xff);
  107. }
  108.  
  109. static void cursor_disable(void)
  110. {
  111.     uint8_t stat;
  112.  
  113.     pio_write_8(EGA_IO_BASE, 0xa);
  114.     stat = pio_read_8(EGA_IO_BASE + 1);
  115.     pio_write_8(EGA_IO_BASE, 0xa);
  116.     pio_write_8(EGA_IO_BASE + 1, stat | (1 << 5));
  117. }
  118.  
  119. static void cursor_enable(void)
  120. {
  121.     uint8_t stat;
  122.  
  123.     pio_write_8(EGA_IO_BASE, 0xa);
  124.     stat = pio_read_8(EGA_IO_BASE + 1);
  125.     pio_write_8(EGA_IO_BASE, 0xa);
  126.     pio_write_8(EGA_IO_BASE + 1, stat & (~(1 << 5)));
  127. }
  128.  
  129. static void scroll(int rows)
  130. {
  131.     int i;
  132.     if (rows > 0) {
  133.         memmove(scr_addr, ((char *) scr_addr) + rows * scr_width * 2,
  134.             scr_width * scr_height * 2 - rows * scr_width * 2);
  135.         for (i = 0; i < rows * scr_width; i++)
  136.             (((short *) scr_addr) + scr_width * scr_height - rows *
  137.                 scr_width)[i] = ((style << 8) + ' ');
  138.     } else if (rows < 0) {
  139.         memmove(((char *)scr_addr) - rows * scr_width * 2, scr_addr,
  140.             scr_width * scr_height * 2 + rows * scr_width * 2);
  141.         for (i = 0; i < -rows * scr_width; i++)
  142.             ((short *)scr_addr)[i] = ((style << 8 ) + ' ');
  143.     }
  144. }
  145.  
  146. static void printchar(char c, unsigned int row, unsigned int col)
  147. {
  148.     scr_addr[(row * scr_width + col) * 2] = c;
  149.     scr_addr[(row * scr_width + col) * 2 + 1] = style;
  150.    
  151.     cursor_goto(row, col + 1);
  152. }
  153.  
  154. static void draw_text_data(keyfield_t *data)
  155. {
  156.     int i;
  157.  
  158.     for (i = 0; i < scr_width * scr_height; i++) {
  159.         scr_addr[i * 2] = data[i].character;
  160.         scr_addr[i * 2 + 1] = attr_to_ega_style(&data[i].attrs);
  161.     }
  162. }
  163.  
  164. static int save_screen(void)
  165. {
  166.     int i;
  167.  
  168.     for (i = 0; (i < MAX_SAVED_SCREENS) && (saved_screens[i].data); i++)
  169.         ;
  170.     if (i == MAX_SAVED_SCREENS)
  171.         return EINVAL;
  172.     if (!(saved_screens[i].data = malloc(2 * scr_width * scr_height)))
  173.         return ENOMEM;
  174.     memcpy(saved_screens[i].data, scr_addr, 2 * scr_width * scr_height);
  175.  
  176.     return i;
  177. }
  178.  
  179. static int print_screen(int i)
  180. {
  181.     if (saved_screens[i].data)
  182.         memcpy(scr_addr, saved_screens[i].data, 2 * scr_width *
  183.             scr_height);
  184.     else
  185.         return EINVAL;
  186.     return i;
  187. }
  188.  
  189. static int style_to_ega_style(int style)
  190. {
  191.     unsigned int ega_style;
  192.  
  193.     switch (style) {
  194.     case STYLE_NORMAL:
  195.         ega_style = INVERTED_COLOR;
  196.         break;
  197.     case STYLE_EMPHASIS:
  198.         ega_style = INVERTED_COLOR | 4;
  199.         break;
  200.     default:
  201.         return INVERTED_COLOR;
  202.     }
  203.  
  204.     return ega_style;
  205. }
  206.  
  207. static unsigned int color_to_ega_style(int fg_color, int bg_color, int attr)
  208. {
  209.     unsigned int style;
  210.  
  211.     style = (fg_color & 7) | ((bg_color & 7) << 4);
  212.     if (attr & CATTR_BRIGHT)
  213.         style = style | 0x08;
  214.  
  215.     return style;
  216. }
  217.  
  218. static unsigned int rgb_to_ega_style(uint32_t fg, uint32_t bg)
  219. {
  220.     return (fg > bg) ? NORMAL_COLOR : INVERTED_COLOR;
  221. }
  222.  
  223. static unsigned attr_to_ega_style(const attrs_t *a)
  224. {
  225.     switch (a->t) {
  226.     case at_style: return style_to_ega_style(a->a.s.style);
  227.     case at_rgb: return rgb_to_ega_style(a->a.r.fg_color, a->a.r.bg_color);
  228.     case at_idx: return color_to_ega_style(a->a.i.fg_color,
  229.         a->a.i.bg_color, a->a.i.flags);
  230.     default: return INVERTED_COLOR;
  231.     }
  232. }
  233.  
  234. static void ega_client_connection(ipc_callid_t iid, ipc_call_t *icall)
  235. {
  236.     int retval;
  237.     ipc_callid_t callid;
  238.     ipc_call_t call;
  239.     char c;
  240.     unsigned int row, col;
  241.     int bg_color, fg_color, attr;
  242.     uint32_t bg_rgb, fg_rgb;
  243.     keyfield_t *interbuf = NULL;
  244.     size_t intersize = 0;
  245.     int i;
  246.  
  247.     if (client_connected) {
  248.         ipc_answer_0(iid, ELIMIT);
  249.         return;
  250.     }
  251.     client_connected = 1;
  252.     ipc_answer_0(iid, EOK); /* Accept connection */
  253.  
  254.     while (1) {
  255.         callid = async_get_call(&call);
  256.         switch (IPC_GET_METHOD(call)) {
  257.         case IPC_M_PHONE_HUNGUP:
  258.             client_connected = 0;
  259.             ipc_answer_0(callid, EOK);
  260.             return; /* Exit thread */
  261.         case IPC_M_SHARE_OUT:
  262.             /* We accept one area for data interchange */
  263.             intersize = IPC_GET_ARG2(call);
  264.             if (intersize >= scr_width * scr_height *
  265.                 sizeof(*interbuf)) {
  266.                 receive_comm_area(callid, &call,
  267.                     (void *) &interbuf);
  268.                 continue;
  269.             }
  270.             retval = EINVAL;
  271.             break;
  272.         case FB_DRAW_TEXT_DATA:
  273.             if (!interbuf) {
  274.                 retval = EINVAL;
  275.                 break;
  276.             }
  277.             draw_text_data(interbuf);
  278.             retval = 0;
  279.             break;
  280.         case FB_GET_CSIZE:
  281.             ipc_answer_2(callid, EOK, scr_height, scr_width);
  282.             continue;
  283.         case FB_CLEAR:
  284.             clrscr();
  285.             retval = 0;
  286.             break;
  287.         case FB_PUTCHAR:
  288.             c = IPC_GET_ARG1(call);
  289.             row = IPC_GET_ARG2(call);
  290.             col = IPC_GET_ARG3(call);
  291.             if (col >= scr_width || row >= scr_height) {
  292.                 retval = EINVAL;
  293.                 break;
  294.             }
  295.             printchar(c, row, col);
  296.             retval = 0;
  297.             break;
  298.         case FB_CURSOR_GOTO:
  299.             row = IPC_GET_ARG1(call);
  300.             col = IPC_GET_ARG2(call);
  301.             if (row >= scr_height || col >= scr_width) {
  302.                 retval = EINVAL;
  303.                 break;
  304.             }
  305.             cursor_goto(row, col);
  306.             retval = 0;
  307.             break;
  308.         case FB_SCROLL:
  309.             i = IPC_GET_ARG1(call);
  310.             if (i > scr_height || i < -((int) scr_height)) {
  311.                 retval = EINVAL;
  312.                 break;
  313.             }
  314.             scroll(i);
  315.             retval = 0;
  316.             break;
  317.         case FB_CURSOR_VISIBILITY:
  318.             if (IPC_GET_ARG1(call))
  319.                 cursor_enable();
  320.             else
  321.                 cursor_disable();
  322.             retval = 0;
  323.             break;
  324.         case FB_SET_STYLE:
  325.             style = style_to_ega_style(IPC_GET_ARG1(call));
  326.             retval = 0;
  327.             break;
  328.         case FB_SET_COLOR:
  329.             fg_color = IPC_GET_ARG1(call);
  330.             bg_color = IPC_GET_ARG2(call);
  331.             attr = IPC_GET_ARG3(call);
  332.             style = color_to_ega_style(fg_color, bg_color, attr);
  333.             retval = 0;
  334.             break;
  335.         case FB_SET_RGB_COLOR:
  336.             fg_rgb = IPC_GET_ARG1(call);
  337.             bg_rgb = IPC_GET_ARG2(call);
  338.             style = rgb_to_ega_style(fg_rgb, bg_rgb);
  339.             retval = 0;
  340.             break;
  341.         case FB_VP_DRAW_PIXMAP:
  342.             i = IPC_GET_ARG2(call);
  343.             retval = print_screen(i);
  344.             break;
  345.         case FB_VP2PIXMAP:
  346.             retval = save_screen();
  347.             break;
  348.         case FB_DROP_PIXMAP:
  349.             i = IPC_GET_ARG1(call);
  350.             if (i >= MAX_SAVED_SCREENS) {
  351.                 retval = EINVAL;
  352.                 break;
  353.             }
  354.             if (saved_screens[i].data) {
  355.                 free(saved_screens[i].data);
  356.                 saved_screens[i].data = NULL;
  357.             }
  358.             retval = 0;
  359.             break;
  360.  
  361.         default:
  362.             retval = EINVAL;
  363.         }
  364.         ipc_answer_0(callid, retval);
  365.     }
  366. }
  367.  
  368. int ega_init(void)
  369. {
  370.     void *ega_ph_addr;
  371.     size_t sz;
  372.  
  373.     ega_ph_addr = (void *) sysinfo_value("fb.address.physical");
  374.     scr_width = sysinfo_value("fb.width");
  375.     scr_height = sysinfo_value("fb.height");
  376.  
  377.     if (sysinfo_value("fb.blinking")) {
  378.         ega_normal_color &= 0x77;
  379.         ega_inverted_color &= 0x77;
  380.     }
  381.  
  382.     style = NORMAL_COLOR;
  383.  
  384.     iospace_enable(task_get_id(), (void *) EGA_IO_BASE, 2);
  385.  
  386.     sz = scr_width * scr_height * 2;
  387.     scr_addr = as_get_mappable_page(sz);
  388.  
  389.     if (physmem_map(ega_ph_addr, scr_addr, ALIGN_UP(sz, PAGE_SIZE) >>
  390.         PAGE_WIDTH, AS_AREA_READ | AS_AREA_WRITE) != 0)
  391.         return -1;
  392.  
  393.     async_set_client_connection(ega_client_connection);
  394.  
  395.     return 0;
  396. }
  397.  
  398.  
  399. /**
  400.  * @}
  401.  */
  402.