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