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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. /** @addtogroup genarch
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <genarch/fb/font-8x16.h>
  36. #include <genarch/fb/visuals.h>
  37. #include <genarch/fb/fb.h>
  38. #include <console/chardev.h>
  39. #include <console/console.h>
  40. #include <sysinfo/sysinfo.h>
  41. #include <mm/slab.h>
  42. #include <panic.h>
  43. #include <memstr.h>
  44. #include <config.h>
  45. #include <bitops.h>
  46. #include <print.h>
  47. #include <ddi/ddi.h>
  48. #include <arch/types.h>
  49. #include <typedefs.h>
  50.  
  51. #include "helenos.xbm"
  52.  
  53. static parea_t fb_parea;        /**< Physical memory area for fb. */
  54.  
  55. SPINLOCK_INITIALIZE(fb_lock);
  56.  
  57. static uint8_t *fbaddress = NULL;
  58.  
  59. static uint8_t *blankline = NULL;
  60. static uint8_t *dbbuffer = NULL;    /* Buffer for fast scrolling console */
  61. static index_t dboffset;
  62.  
  63. static unsigned int xres = 0;
  64. static unsigned int yres = 0;
  65. static unsigned int scanline = 0;
  66. static unsigned int pixelbytes = 0;
  67. #ifdef FB_INVERT_COLORS
  68. static bool invert_colors = true;
  69. #else
  70. static bool invert_colors = false;
  71. #endif
  72.  
  73. static unsigned int position = 0;
  74. static unsigned int columns = 0;
  75. static unsigned int rows = 0;
  76.  
  77. #define COL_WIDTH   8
  78. #define ROW_BYTES   (scanline * FONT_SCANLINES)
  79.  
  80. #define BGCOLOR     0x000080
  81. #define FGCOLOR     0xffff00
  82. #define LOGOCOLOR   0x2020b0
  83.  
  84. #define RED(x, bits)    ((x >> (8 + 8 + 8 - bits)) & ((1 << bits) - 1))
  85. #define GREEN(x, bits)  ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
  86. #define BLUE(x, bits)   ((x >> (8 - bits)) & ((1 << bits) - 1))
  87.  
  88. #define POINTPOS(x, y)  ((y) * scanline + (x) * pixelbytes)
  89.  
  90. /***************************************************************/
  91. /* Pixel specific fuctions */
  92.  
  93. static void (*rgb2scr)(void *, int);
  94. static int (*scr2rgb)(void *);
  95.  
  96. static inline int COLOR(int color)
  97. {
  98.     return invert_colors ? ~color : color;
  99. }
  100.  
  101. /* Conversion routines between different color representations */
  102. static void rgb_byte0888(void *dst, int rgb)
  103. {
  104.     *((int *) dst) = rgb;
  105. }
  106.  
  107. static int byte0888_rgb(void *src)
  108. {
  109.     return (*((int *) src)) & 0xffffff;
  110. }
  111.  
  112. static void bgr_byte0888(void *dst, int rgb)
  113. {
  114.     *((uint32_t *) dst) = BLUE(rgb, 8) << 16 | GREEN(rgb, 8) << 8 |
  115.         RED(rgb, 8);
  116. }
  117.  
  118. static int byte0888_bgr(void *src)
  119. {
  120.     int color = *(uint32_t *)(src);
  121.     return ((color & 0xff) << 16) | (((color >> 8) & 0xff) << 8) |
  122.         ((color >> 16) & 0xff);
  123. }
  124.  
  125. static void rgb_byte888(void *dst, int rgb)
  126. {
  127.     uint8_t *scr = dst;
  128. #if defined(FB_INVERT_ENDIAN)
  129.     scr[0] = RED(rgb, 8);
  130.     scr[1] = GREEN(rgb, 8);
  131.     scr[2] = BLUE(rgb, 8);
  132. #else
  133.     scr[2] = RED(rgb, 8);
  134.     scr[1] = GREEN(rgb, 8);
  135.     scr[0] = BLUE(rgb, 8);
  136. #endif
  137. }
  138.  
  139. static int byte888_rgb(void *src)
  140. {
  141.     uint8_t *scr = src;
  142. #if defined(FB_INVERT_ENDIAN)
  143.     return scr[0] << 16 | scr[1] << 8 | scr[2];
  144. #else
  145.     return scr[2] << 16 | scr[1] << 8 | scr[0];
  146. #endif 
  147. }
  148.  
  149. /**  16-bit depth (5:5:5) */
  150. static void rgb_byte555(void *dst, int rgb)
  151. {
  152.     /* 5-bit, 5-bits, 5-bits */
  153.     *((uint16_t *) dst) = RED(rgb, 5) << 10 | GREEN(rgb, 5) << 5 |
  154.         BLUE(rgb, 5);
  155. }
  156.  
  157. /** 16-bit depth (5:5:5) */
  158. static int byte555_rgb(void *src)
  159. {
  160.     int color = *(uint16_t *)(src);
  161.     return (((color >> 10) & 0x1f) << (16 + 3)) |
  162.         (((color >> 5) & 0x1f) << (8 + 3)) | ((color & 0x1f) << 3);
  163. }
  164.  
  165. /**  16-bit depth (5:6:5) */
  166. static void rgb_byte565(void *dst, int rgb)
  167. {
  168.     /* 5-bit, 6-bits, 5-bits */
  169.     *((uint16_t *) dst) = RED(rgb, 5) << 11 | GREEN(rgb, 6) << 5 |
  170.         BLUE(rgb, 5);
  171. }
  172.  
  173. /** 16-bit depth (5:6:5) */
  174. static int byte565_rgb(void *src)
  175. {
  176.     int color = *(uint16_t *)(src);
  177.     return (((color >> 11) & 0x1f) << (16 + 3)) |
  178.         (((color >> 5) & 0x3f) << (8 + 2)) | ((color & 0x1f) << 3);
  179. }
  180.  
  181. /** Put pixel - 8-bit depth (color palette/3:2:3)
  182.  *
  183.  * Even though we try 3:2:3 color scheme here, an 8-bit framebuffer
  184.  * will most likely use a color palette. The color appearance
  185.  * will be pretty random and depend on the default installed
  186.  * palette. This could be fixed by supporting custom palette
  187.  * and setting it to simulate the 8-bit truecolor.
  188.  */
  189. static void rgb_byte8(void *dst, int rgb)
  190. {
  191.     *((uint8_t *) dst) = RED(rgb, 3) << 5 | GREEN(rgb, 2) << 3 |
  192.         BLUE(rgb, 3);
  193. }
  194.  
  195. /** Return pixel color - 8-bit depth (color palette/3:2:3)
  196.  *
  197.  * See the comment for rgb_byte().
  198.  */
  199. static int byte8_rgb(void *src)
  200. {
  201.     int color = *(uint8_t *)src;
  202.     return (((color >> 5) & 0x7) << (16 + 5)) |
  203.         (((color >> 3) & 0x3) << (8 + 6)) | ((color & 0x7) << 5);
  204. }
  205.  
  206. static void putpixel(unsigned int x, unsigned int y, int color)
  207. {
  208.     (*rgb2scr)(&fbaddress[POINTPOS(x, y)], COLOR(color));
  209.  
  210.     if (dbbuffer) {
  211.         int dline = (y + dboffset) % yres;
  212.         (*rgb2scr)(&dbbuffer[POINTPOS(x, dline)], COLOR(color));
  213.     }
  214. }
  215.  
  216. /** Get pixel from viewport */
  217. static int getpixel(unsigned int x, unsigned int y)
  218. {
  219.     if (dbbuffer) {
  220.         int dline = (y + dboffset) % yres;
  221.         return COLOR((*scr2rgb)(&dbbuffer[POINTPOS(x, dline)]));
  222.     }
  223.     return COLOR((*scr2rgb)(&fbaddress[POINTPOS(x, y)]));
  224. }
  225.  
  226.  
  227. /** Fill screen with background color */
  228. static void clear_screen(void)
  229. {
  230.     unsigned int y;
  231.  
  232.     for (y = 0; y < yres; y++) {
  233.         memcpy(&fbaddress[scanline * y], blankline, xres * pixelbytes);
  234.         if (dbbuffer)
  235.             memcpy(&dbbuffer[scanline * y], blankline,
  236.                 xres * pixelbytes);
  237.     }
  238. }
  239.  
  240.  
  241. /** Scroll screen one row up */
  242. static void scroll_screen(void)
  243. {
  244.     if (dbbuffer) {
  245.         count_t first;
  246.        
  247.         /* Clear the last row */
  248.         memcpy(&dbbuffer[dboffset * scanline], blankline, ROW_BYTES);
  249.        
  250.         dboffset = (dboffset + FONT_SCANLINES) % yres;
  251.         first = yres - dboffset;
  252.        
  253.         /* Move all rows one row up */
  254.         if (xres * pixelbytes == scanline) {
  255.             memcpy(fbaddress, &dbbuffer[dboffset * scanline],
  256.                 first * scanline);
  257.             memcpy(&fbaddress[first * scanline], dbbuffer,
  258.                 dboffset * scanline);
  259.         } else {
  260.             /*
  261.              * When the scanline is bigger than number of bytes
  262.              * in the X-resolution, chances are that the
  263.              * frame buffer memory past the X-resolution is special
  264.              * in some way. For example, the SUNW,ffb framebuffer
  265.              * wraps this area around the beginning of the same
  266.              * line. To avoid troubles, copy only memory as
  267.              * specified by the resolution.
  268.              */
  269.             int i;
  270.  
  271.             for (i = 0; i < first; i++)
  272.                 memcpy(&fbaddress[i * scanline],
  273.                     &dbbuffer[(dboffset + i) * scanline],
  274.                     xres * pixelbytes);
  275.             for (i = 0; i < dboffset; i++)
  276.                 memcpy(&fbaddress[(first + i) * scanline],
  277.                     &dbbuffer[i * scanline], xres * pixelbytes);
  278.         }
  279.     } else {
  280.         uint8_t *lastline = &fbaddress[(rows - 1) * ROW_BYTES];
  281.        
  282.         if (xres * pixelbytes == scanline) {
  283.             /* Move all rows one row up */
  284.             memcpy((void *) fbaddress,
  285.                 (void *) &fbaddress[ROW_BYTES],
  286.                 scanline * yres - ROW_BYTES);
  287.             /* Clear the last row */
  288.             memcpy((void *) lastline, (void *) blankline,
  289.                 ROW_BYTES);
  290.         } else {
  291.             /*
  292.              * See the comment in the dbbuffer case.
  293.              */
  294.             int i;
  295.  
  296.             /* Move all rows one row up */
  297.             for (i = 0; i < yres - FONT_SCANLINES; i++)
  298.                 memcpy(&fbaddress[i * scanline],
  299.                     &fbaddress[(i + FONT_SCANLINES) * scanline],
  300.                     xres * pixelbytes);
  301.             /* Clear the last row */
  302.             for (i = 0; i < FONT_SCANLINES; i++)
  303.                 memcpy(&lastline[i * scanline],
  304.                     &blankline[i * scanline],
  305.                     xres * pixelbytes);
  306.         }
  307.     }
  308. }
  309.  
  310.  
  311. static void invert_pixel(unsigned int x, unsigned int y)
  312. {
  313.     putpixel(x, y, ~getpixel(x, y));
  314. }
  315.  
  316.  
  317. /** Draw one line of glyph at a given position */
  318. static void draw_glyph_line(unsigned int glline, unsigned int x, unsigned int y)
  319. {
  320.     unsigned int i;
  321.  
  322.     for (i = 0; i < 8; i++)
  323.         if (glline & (1 << (7 - i))) {
  324.             putpixel(x + i, y, FGCOLOR);
  325.         } else
  326.             putpixel(x + i, y, BGCOLOR);
  327. }
  328.  
  329. /***************************************************************/
  330. /* Character-console functions */
  331.  
  332. /** Draw character at given position */
  333. static void draw_glyph(uint8_t glyph, unsigned int col, unsigned int row)
  334. {
  335.     unsigned int y;
  336.  
  337.     for (y = 0; y < FONT_SCANLINES; y++)
  338.         draw_glyph_line(fb_font[glyph * FONT_SCANLINES + y],
  339.             col * COL_WIDTH, row * FONT_SCANLINES + y);
  340. }
  341.  
  342. /** Invert character at given position */
  343. static void invert_char(unsigned int col, unsigned int row)
  344. {
  345.     unsigned int x;
  346.     unsigned int y;
  347.  
  348.     for (x = 0; x < COL_WIDTH; x++)
  349.         for (y = 0; y < FONT_SCANLINES; y++)
  350.             invert_pixel(col * COL_WIDTH + x,
  351.                 row * FONT_SCANLINES + y);
  352. }
  353.  
  354. /** Draw character at default position */
  355. static void draw_char(char chr)
  356. {
  357.     draw_glyph(chr, position % columns, position / columns);
  358. }
  359.  
  360. static void draw_logo(unsigned int startx, unsigned int starty)
  361. {
  362.     unsigned int x;
  363.     unsigned int y;
  364.     unsigned int byte;
  365.     unsigned int rowbytes;
  366.  
  367.     rowbytes = (helenos_width - 1) / 8 + 1;
  368.  
  369.     for (y = 0; y < helenos_height; y++)
  370.         for (x = 0; x < helenos_width; x++) {
  371.             byte = helenos_bits[rowbytes * y + x / 8];
  372.             byte >>= x % 8;
  373.             if (byte & 1)
  374.                 putpixel(startx + x, starty + y,
  375.                     COLOR(LOGOCOLOR));
  376.         }
  377. }
  378.  
  379. /***************************************************************/
  380. /* Stdout specific functions */
  381.  
  382. static void invert_cursor(void)
  383. {
  384.     invert_char(position % columns, position / columns);
  385. }
  386.  
  387. /** Print character to screen
  388.  *
  389.  *  Emulate basic terminal commands
  390.  */
  391. static void fb_putchar(chardev_t *dev, char ch)
  392. {
  393.     spinlock_lock(&fb_lock);
  394.    
  395.     switch (ch) {
  396.     case '\n':
  397.         invert_cursor();
  398.         position += columns;
  399.         position -= position % columns;
  400.         break;
  401.     case '\r':
  402.         invert_cursor();
  403.         position -= position % columns;
  404.         break;
  405.     case '\b':
  406.         invert_cursor();
  407.         if (position % columns)
  408.             position--;
  409.         break;
  410.     case '\t':
  411.         invert_cursor();
  412.         do {
  413.             draw_char(' ');
  414.             position++;
  415.         } while ((position % 8) && position < columns * rows);
  416.         break;
  417.     default:
  418.         draw_char(ch);
  419.         position++;
  420.     }
  421.    
  422.     if (position >= columns * rows) {
  423.         position -= columns;
  424.         scroll_screen();
  425.     }
  426.    
  427.     invert_cursor();
  428.    
  429.     spinlock_unlock(&fb_lock);
  430. }
  431.  
  432. static chardev_t framebuffer;
  433. static chardev_operations_t fb_ops = {
  434.     .write = fb_putchar,
  435. };
  436.  
  437.  
  438. /** Initialize framebuffer as a chardev output device
  439.  *
  440.  * @param addr   Physical address of the framebuffer
  441.  * @param x      Screen width in pixels
  442.  * @param y      Screen height in pixels
  443.  * @param scan   Bytes per one scanline
  444.  * @param visual Color model
  445.  *
  446.  */
  447. void fb_init(uintptr_t addr, unsigned int x, unsigned int y, unsigned int scan,
  448.     unsigned int visual)
  449. {
  450.     switch (visual) {
  451.     case VISUAL_INDIRECT_8:
  452.         rgb2scr = rgb_byte8;
  453.         scr2rgb = byte8_rgb;
  454.         pixelbytes = 1;
  455.         break;
  456.     case VISUAL_RGB_5_5_5:
  457.         rgb2scr = rgb_byte555;
  458.         scr2rgb = byte555_rgb;
  459.         pixelbytes = 2;
  460.         break;
  461.     case VISUAL_RGB_5_6_5:
  462.         rgb2scr = rgb_byte565;
  463.         scr2rgb = byte565_rgb;
  464.         pixelbytes = 2;
  465.         break;
  466.     case VISUAL_RGB_8_8_8:
  467.         rgb2scr = rgb_byte888;
  468.         scr2rgb = byte888_rgb;
  469.         pixelbytes = 3;
  470.         break;
  471.     case VISUAL_RGB_8_8_8_0:
  472.         rgb2scr = rgb_byte888;
  473.         scr2rgb = byte888_rgb;
  474.         pixelbytes = 4;
  475.         break;
  476.     case VISUAL_RGB_0_8_8_8:
  477.         rgb2scr = rgb_byte0888;
  478.         scr2rgb = byte0888_rgb;
  479.         pixelbytes = 4;
  480.         break;
  481.     case VISUAL_BGR_0_8_8_8:
  482.         rgb2scr = bgr_byte0888;
  483.         scr2rgb = byte0888_bgr;
  484.         pixelbytes = 4;
  485.         break;
  486.     default:
  487.         panic("Unsupported visual.\n");
  488.     }
  489.    
  490.     unsigned int fbsize = scan * y;
  491.    
  492.     /* Map the framebuffer */
  493.     fbaddress = (uint8_t *) hw_map((uintptr_t) addr, fbsize);
  494.    
  495.     xres = x;
  496.     yres = y;
  497.     scanline = scan;
  498.    
  499.     rows = y / FONT_SCANLINES;
  500.     columns = x / COL_WIDTH;
  501.  
  502.     fb_parea.pbase = (uintptr_t) addr;
  503.     fb_parea.vbase = (uintptr_t) fbaddress;
  504.     fb_parea.frames = SIZE2FRAMES(fbsize);
  505.     fb_parea.cacheable = false;
  506.     ddi_parea_register(&fb_parea);
  507.  
  508.     sysinfo_set_item_val("fb", NULL, true);
  509.     sysinfo_set_item_val("fb.kind", NULL, 1);
  510.     sysinfo_set_item_val("fb.width", NULL, xres);
  511.     sysinfo_set_item_val("fb.height", NULL, yres);
  512.     sysinfo_set_item_val("fb.scanline", NULL, scan);
  513.     sysinfo_set_item_val("fb.visual", NULL, visual);
  514.     sysinfo_set_item_val("fb.address.physical", NULL, addr);
  515.     sysinfo_set_item_val("fb.address.color", NULL,
  516.         PAGE_COLOR((uintptr_t) fbaddress));
  517.     sysinfo_set_item_val("fb.invert-colors", NULL, invert_colors);
  518.  
  519.     /* Allocate double buffer */
  520.     unsigned int order = fnzb(SIZE2FRAMES(fbsize) - 1) + 1;
  521.     dbbuffer = (uint8_t *) frame_alloc(order, FRAME_ATOMIC | FRAME_KA);
  522.     if (!dbbuffer)
  523.         printf("Failed to allocate scroll buffer.\n");
  524.     dboffset = 0;
  525.  
  526.     /* Initialized blank line */
  527.     blankline = (uint8_t *) malloc(ROW_BYTES, FRAME_ATOMIC);
  528.     if (!blankline)
  529.         panic("Failed to allocate blank line for framebuffer.");
  530.     for (y = 0; y < FONT_SCANLINES; y++)
  531.         for (x = 0; x < xres; x++)
  532.             (*rgb2scr)(&blankline[POINTPOS(x, y)], COLOR(BGCOLOR));
  533.    
  534.     clear_screen();
  535.  
  536.     /* Update size of screen to match text area */
  537.     yres = rows * FONT_SCANLINES;
  538.  
  539.     draw_logo(xres - helenos_width, 0);
  540.     invert_cursor();
  541.  
  542.     chardev_initialize("fb", &framebuffer, &fb_ops);
  543.     stdout = &framebuffer;
  544. }
  545.  
  546. /** @}
  547.  */
  548.