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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, inverted)
  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.  * Currently we set the palette on the sparc64 port.
  189.  *
  190.  * Note that the byte is being inverted by this function. The reason is
  191.  * that we would like to use a color palette where the white color code
  192.  * is 0 and the black color code is 255, as some machines (SunBlade 1500)
  193.  * use these codes for black and white and prevent to set codes
  194.  * 0 and 255 to other colors.
  195.  */
  196. static void rgb_byte8(void *dst, int rgb)
  197. {
  198.     *((uint8_t *) dst) = 255 - (RED(rgb, 3) << 5 | GREEN(rgb, 2) << 3 |
  199.         BLUE(rgb, 3));
  200. }
  201.  
  202. /** Return pixel color - 8-bit depth (color palette/3:2:3)
  203.  *
  204.  * See the comment for rgb_byte().
  205.  */
  206. static int byte8_rgb(void *src)
  207. {
  208.     int color = 255 - (*(uint8_t *)src);
  209.     return (((color >> 5) & 0x7) << (16 + 5)) |
  210.         (((color >> 3) & 0x3) << (8 + 6)) | ((color & 0x7) << 5);
  211. }
  212.  
  213. static void putpixel(unsigned int x, unsigned int y, int color)
  214. {
  215.     (*rgb2scr)(&fbaddress[POINTPOS(x, y)], COLOR(color));
  216.  
  217.     if (dbbuffer) {
  218.         int dline = (y + dboffset) % yres;
  219.         (*rgb2scr)(&dbbuffer[POINTPOS(x, dline)], COLOR(color));
  220.     }
  221. }
  222.  
  223. /** Get pixel from viewport */
  224. static int getpixel(unsigned int x, unsigned int y)
  225. {
  226.     if (dbbuffer) {
  227.         int dline = (y + dboffset) % yres;
  228.         return COLOR((*scr2rgb)(&dbbuffer[POINTPOS(x, dline)]));
  229.     }
  230.     return COLOR((*scr2rgb)(&fbaddress[POINTPOS(x, y)]));
  231. }
  232.  
  233.  
  234. /** Fill screen with background color */
  235. static void clear_screen(void)
  236. {
  237.     unsigned int y;
  238.  
  239.     for (y = 0; y < yres; y++) {
  240.         memcpy(&fbaddress[scanline * y], blankline, xres * pixelbytes);
  241.         if (dbbuffer)
  242.             memcpy(&dbbuffer[scanline * y], blankline,
  243.                 xres * pixelbytes);
  244.     }
  245. }
  246.  
  247.  
  248. /** Scroll screen one row up */
  249. static void scroll_screen(void)
  250. {
  251.     if (dbbuffer) {
  252.         count_t first;
  253.        
  254.         /* Clear the last row */
  255.         memcpy(&dbbuffer[dboffset * scanline], blankline, ROW_BYTES);
  256.        
  257.         dboffset = (dboffset + FONT_SCANLINES) % yres;
  258.         first = yres - dboffset;
  259.        
  260.         /* Move all rows one row up */
  261.         if (xres * pixelbytes == scanline) {
  262.             memcpy(fbaddress, &dbbuffer[dboffset * scanline],
  263.                 first * scanline);
  264.             memcpy(&fbaddress[first * scanline], dbbuffer,
  265.                 dboffset * scanline);
  266.         } else {
  267.             /*
  268.              * When the scanline is bigger than number of bytes
  269.              * in the X-resolution, chances are that the
  270.              * frame buffer memory past the X-resolution is special
  271.              * in some way. For example, the SUNW,ffb framebuffer
  272.              * wraps this area around the beginning of the same
  273.              * line. To avoid troubles, copy only memory as
  274.              * specified by the resolution.
  275.              */
  276.             unsigned int i;
  277.  
  278.             for (i = 0; i < first; i++)
  279.                 memcpy(&fbaddress[i * scanline],
  280.                     &dbbuffer[(dboffset + i) * scanline],
  281.                     xres * pixelbytes);
  282.             for (i = 0; i < dboffset; i++)
  283.                 memcpy(&fbaddress[(first + i) * scanline],
  284.                     &dbbuffer[i * scanline], xres * pixelbytes);
  285.         }
  286.     } else {
  287.         uint8_t *lastline = &fbaddress[(rows - 1) * ROW_BYTES];
  288.        
  289.         if (xres * pixelbytes == scanline) {
  290.             /* Move all rows one row up */
  291.             memcpy((void *) fbaddress,
  292.                 (void *) &fbaddress[ROW_BYTES],
  293.                 scanline * yres - ROW_BYTES);
  294.             /* Clear the last row */
  295.             memcpy((void *) lastline, (void *) blankline,
  296.                 ROW_BYTES);
  297.         } else {
  298.             /*
  299.              * See the comment in the dbbuffer case.
  300.              */
  301.             unsigned int i;
  302.  
  303.             /* Move all rows one row up */
  304.             for (i = 0; i < yres - FONT_SCANLINES; i++)
  305.                 memcpy(&fbaddress[i * scanline],
  306.                     &fbaddress[(i + FONT_SCANLINES) * scanline],
  307.                     xres * pixelbytes);
  308.             /* Clear the last row */
  309.             for (i = 0; i < FONT_SCANLINES; i++)
  310.                 memcpy(&lastline[i * scanline],
  311.                     &blankline[i * scanline],
  312.                     xres * pixelbytes);
  313.         }
  314.     }
  315. }
  316.  
  317.  
  318. static void invert_pixel(unsigned int x, unsigned int y)
  319. {
  320.     putpixel(x, y, ~getpixel(x, y));
  321. }
  322.  
  323.  
  324. /** Draw one line of glyph at a given position */
  325. static void draw_glyph_line(unsigned int glline, unsigned int x, unsigned int y)
  326. {
  327.     unsigned int i;
  328.  
  329.     for (i = 0; i < 8; i++)
  330.         if (glline & (1 << (7 - i))) {
  331.             putpixel(x + i, y, FGCOLOR);
  332.         } else
  333.             putpixel(x + i, y, BGCOLOR);
  334. }
  335.  
  336. /***************************************************************/
  337. /* Character-console functions */
  338.  
  339. /** Draw character at given position */
  340. static void draw_glyph(uint8_t glyph, unsigned int col, unsigned int row)
  341. {
  342.     unsigned int y;
  343.  
  344.     for (y = 0; y < FONT_SCANLINES; y++)
  345.         draw_glyph_line(fb_font[glyph * FONT_SCANLINES + y],
  346.             col * COL_WIDTH, row * FONT_SCANLINES + y);
  347. }
  348.  
  349. /** Invert character at given position */
  350. static void invert_char(unsigned int col, unsigned int row)
  351. {
  352.     unsigned int x;
  353.     unsigned int y;
  354.  
  355.     for (x = 0; x < COL_WIDTH; x++)
  356.         for (y = 0; y < FONT_SCANLINES; y++)
  357.             invert_pixel(col * COL_WIDTH + x,
  358.                 row * FONT_SCANLINES + y);
  359. }
  360.  
  361. /** Draw character at default position */
  362. static void draw_char(char chr)
  363. {
  364.     draw_glyph(chr, position % columns, position / columns);
  365. }
  366.  
  367. static void draw_logo(unsigned int startx, unsigned int starty)
  368. {
  369.     unsigned int x;
  370.     unsigned int y;
  371.     unsigned int byte;
  372.     unsigned int rowbytes;
  373.  
  374.     rowbytes = (helenos_width - 1) / 8 + 1;
  375.  
  376.     for (y = 0; y < helenos_height; y++)
  377.         for (x = 0; x < helenos_width; x++) {
  378.             byte = helenos_bits[rowbytes * y + x / 8];
  379.             byte >>= x % 8;
  380.             if (byte & 1)
  381.                 putpixel(startx + x, starty + y,
  382.                     COLOR(LOGOCOLOR));
  383.         }
  384. }
  385.  
  386. /***************************************************************/
  387. /* Stdout specific functions */
  388.  
  389. static void invert_cursor(void)
  390. {
  391.     invert_char(position % columns, position / columns);
  392. }
  393.  
  394. /** Print character to screen
  395.  *
  396.  *  Emulate basic terminal commands
  397.  */
  398. static void fb_putchar(chardev_t *dev, char ch)
  399. {
  400.     spinlock_lock(&fb_lock);
  401.    
  402.     switch (ch) {
  403.     case '\n':
  404.         invert_cursor();
  405.         position += columns;
  406.         position -= position % columns;
  407.         break;
  408.     case '\r':
  409.         invert_cursor();
  410.         position -= position % columns;
  411.         break;
  412.     case '\b':
  413.         invert_cursor();
  414.         if (position % columns)
  415.             position--;
  416.         break;
  417.     case '\t':
  418.         invert_cursor();
  419.         do {
  420.             draw_char(' ');
  421.             position++;
  422.         } while ((position % 8) && position < columns * rows);
  423.         break;
  424.     default:
  425.         draw_char(ch);
  426.         position++;
  427.     }
  428.    
  429.     if (position >= columns * rows) {
  430.         position -= columns;
  431.         scroll_screen();
  432.     }
  433.    
  434.     invert_cursor();
  435.    
  436.     spinlock_unlock(&fb_lock);
  437. }
  438.  
  439. static chardev_t framebuffer;
  440. static chardev_operations_t fb_ops = {
  441.     .write = fb_putchar,
  442. };
  443.  
  444.  
  445. /** Initialize framebuffer as a chardev output device
  446.  *
  447.  * @param props     Properties of the framebuffer device.
  448.  */
  449. void fb_init(fb_properties_t *props)
  450. {
  451.     switch (props->visual) {
  452.     case VISUAL_INDIRECT_8:
  453.         rgb2scr = rgb_byte8;
  454.         scr2rgb = byte8_rgb;
  455.         pixelbytes = 1;
  456.         break;
  457.     case VISUAL_RGB_5_5_5:
  458.         rgb2scr = rgb_byte555;
  459.         scr2rgb = byte555_rgb;
  460.         pixelbytes = 2;
  461.         break;
  462.     case VISUAL_RGB_5_6_5:
  463.         rgb2scr = rgb_byte565;
  464.         scr2rgb = byte565_rgb;
  465.         pixelbytes = 2;
  466.         break;
  467.     case VISUAL_RGB_8_8_8:
  468.         rgb2scr = rgb_byte888;
  469.         scr2rgb = byte888_rgb;
  470.         pixelbytes = 3;
  471.         break;
  472.     case VISUAL_RGB_8_8_8_0:
  473.         rgb2scr = rgb_byte888;
  474.         scr2rgb = byte888_rgb;
  475.         pixelbytes = 4;
  476.         break;
  477.     case VISUAL_RGB_0_8_8_8:
  478.         rgb2scr = rgb_byte0888;
  479.         scr2rgb = byte0888_rgb;
  480.         pixelbytes = 4;
  481.         break;
  482.     case VISUAL_BGR_0_8_8_8:
  483.         rgb2scr = bgr_byte0888;
  484.         scr2rgb = byte0888_bgr;
  485.         pixelbytes = 4;
  486.         break;
  487.     default:
  488.         panic("Unsupported visual.\n");
  489.     }
  490.    
  491.     unsigned int fbsize = props->scan * props->y;
  492.    
  493.     /* Map the framebuffer */
  494.     fbaddress = (uint8_t *) hw_map((uintptr_t) props->addr,
  495.         fbsize + props->offset);
  496.     fbaddress += props->offset;
  497.    
  498.     xres = props->x;
  499.     yres = props->y;
  500.     scanline = props->scan;
  501.    
  502.     rows = props->y / FONT_SCANLINES;
  503.     columns = props->x / COL_WIDTH;
  504.  
  505.     fb_parea.pbase = (uintptr_t) props->addr + props->offset;
  506.     fb_parea.vbase = (uintptr_t) fbaddress;
  507.     fb_parea.frames = SIZE2FRAMES(fbsize);
  508.     fb_parea.cacheable = false;
  509.     ddi_parea_register(&fb_parea);
  510.  
  511.     sysinfo_set_item_val("fb", NULL, true);
  512.     sysinfo_set_item_val("fb.kind", NULL, 1);
  513.     sysinfo_set_item_val("fb.width", NULL, xres);
  514.     sysinfo_set_item_val("fb.height", NULL, yres);
  515.     sysinfo_set_item_val("fb.scanline", NULL, props->scan);
  516.     sysinfo_set_item_val("fb.visual", NULL, props->visual);
  517.     sysinfo_set_item_val("fb.address.physical", NULL, props->addr);
  518.     sysinfo_set_item_val("fb.offset", NULL, props->offset);
  519.     sysinfo_set_item_val("fb.invert-colors", NULL, invert_colors);
  520.  
  521.     /* Allocate double buffer */
  522.     unsigned int order = fnzb(SIZE2FRAMES(fbsize) - 1) + 1;
  523.     dbbuffer = (uint8_t *) frame_alloc(order, FRAME_ATOMIC | FRAME_KA);
  524.     if (!dbbuffer)
  525.         printf("Failed to allocate scroll buffer.\n");
  526.     dboffset = 0;
  527.  
  528.     /* Initialized blank line */
  529.     blankline = (uint8_t *) malloc(ROW_BYTES, FRAME_ATOMIC);
  530.     if (!blankline)
  531.         panic("Failed to allocate blank line for framebuffer.");
  532.     unsigned int x, y;
  533.     for (y = 0; y < FONT_SCANLINES; y++)
  534.         for (x = 0; x < xres; x++)
  535.             (*rgb2scr)(&blankline[POINTPOS(x, y)], COLOR(BGCOLOR));
  536.    
  537.     clear_screen();
  538.  
  539.     /* Update size of screen to match text area */
  540.     yres = rows * FONT_SCANLINES;
  541.  
  542.     draw_logo(xres - helenos_width, 0);
  543.     invert_cursor();
  544.  
  545.     chardev_initialize("fb", &framebuffer, &fb_ops);
  546.     stdout = &framebuffer;
  547. }
  548.  
  549. /** @}
  550.  */
  551.