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  1. /*
  2.  * Copyright (c) 2006 Jakub Jermar
  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 sparc64
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <arch/drivers/scr.h>
  36. #include <genarch/ofw/ofw_tree.h>
  37. #include <genarch/fb/fb.h>
  38. #include <genarch/fb/visuals.h>
  39. #include <arch/types.h>
  40. #include <func.h>
  41. #include <align.h>
  42. #include <print.h>
  43.  
  44. #define FFB_REG_24BPP   7
  45.  
  46. scr_type_t scr_type = SCR_UNKNOWN;
  47.  
  48. /** Initialize screen.
  49.  *
  50.  * Traverse OpenFirmware device tree in order to find necessary
  51.  * info about the screen device.
  52.  *
  53.  * @param node Screen device node.
  54.  */
  55. void scr_init(ofw_tree_node_t *node)
  56. {
  57.     ofw_tree_property_t *prop;
  58.     ofw_pci_reg_t *pci_reg;
  59.     ofw_pci_reg_t pci_abs_reg;
  60.     ofw_upa_reg_t *upa_reg;
  61.     ofw_sbus_reg_t *sbus_reg;
  62.     const char *name;
  63.    
  64.     name = ofw_tree_node_name(node);
  65.    
  66.     if (strcmp(name, "SUNW,m64B") == 0)
  67.         scr_type = SCR_ATYFB;
  68.     else if (strcmp(name, "SUNW,XVR-100") == 0)
  69.         scr_type = SCR_XVR;
  70.     else if (strcmp(name, "SUNW,ffb") == 0)
  71.         scr_type = SCR_FFB;
  72.     else if (strcmp(name, "cgsix") == 0)
  73.         scr_type = SCR_CGSIX;
  74.    
  75.     if (scr_type == SCR_UNKNOWN) {
  76.         printf("Unknown screen device.\n");
  77.         return;
  78.     }
  79.    
  80.     uintptr_t fb_addr;
  81.     uint32_t fb_width = 0;
  82.     uint32_t fb_height = 0;
  83.     uint32_t fb_depth = 0;
  84.     uint32_t fb_linebytes = 0;
  85.     uint32_t fb_scanline = 0;
  86.     unsigned int visual;
  87.  
  88.     prop = ofw_tree_getprop(node, "width");
  89.     if (prop && prop->value)
  90.         fb_width = *((uint32_t *) prop->value);
  91.  
  92.     prop = ofw_tree_getprop(node, "height");
  93.     if (prop && prop->value)
  94.         fb_height = *((uint32_t *) prop->value);
  95.  
  96.     prop = ofw_tree_getprop(node, "depth");
  97.     if (prop && prop->value)
  98.         fb_depth = *((uint32_t *) prop->value);
  99.  
  100.     prop = ofw_tree_getprop(node, "linebytes");
  101.     if (prop && prop->value)
  102.         fb_linebytes = *((uint32_t *) prop->value);
  103.  
  104.     prop = ofw_tree_getprop(node, "reg");
  105.     if (!prop)
  106.         panic("Can't find \"reg\" property.\n");
  107.  
  108.     switch (scr_type) {
  109.     case SCR_ATYFB:
  110.         if (prop->size / sizeof(ofw_pci_reg_t) < 2) {
  111.             printf("Too few screen registers.\n");
  112.             return;
  113.         }
  114.    
  115.         pci_reg = &((ofw_pci_reg_t *) prop->value)[1];
  116.        
  117.         if (!ofw_pci_reg_absolutize(node, pci_reg, &pci_abs_reg)) {
  118.             printf("Failed to absolutize fb register.\n");
  119.             return;
  120.         }
  121.    
  122.         if (!ofw_pci_apply_ranges(node->parent, &pci_abs_reg,
  123.             &fb_addr)) {
  124.             printf("Failed to determine screen address.\n");
  125.             return;
  126.         }
  127.        
  128.         switch (fb_depth) {
  129.         case 8:
  130.             fb_scanline = fb_linebytes * (fb_depth >> 3);
  131.             visual = VISUAL_INDIRECT_8;
  132.             break;
  133.         case 16:
  134.             fb_scanline = fb_linebytes * (fb_depth >> 3);
  135.             visual = VISUAL_RGB_5_6_5;
  136.             break;
  137.         case 24:
  138.             fb_scanline = fb_linebytes * 4;
  139.             visual = VISUAL_RGB_8_8_8_0;
  140.             break;
  141.         case 32:
  142.             fb_scanline = fb_linebytes * (fb_depth >> 3);
  143.             visual = VISUAL_RGB_0_8_8_8;
  144.             break;
  145.         default:
  146.             printf("Unsupported bits per pixel.\n");
  147.             return;
  148.         }
  149.        
  150.         break;
  151.     case SCR_XVR:
  152.         if (prop->size / sizeof(ofw_pci_reg_t) < 2) {
  153.             printf("Too few screen registers.\n");
  154.             return;
  155.         }
  156.    
  157.         pci_reg = &((ofw_pci_reg_t *) prop->value)[1];
  158.        
  159.         if (!ofw_pci_reg_absolutize(node, pci_reg, &pci_abs_reg)) {
  160.             printf("Failed to absolutize fb register.\n");
  161.             return;
  162.         }
  163.    
  164.         if (!ofw_pci_apply_ranges(node->parent, &pci_abs_reg,
  165.             &fb_addr)) {
  166.             printf("Failed to determine screen address.\n");
  167.             return;
  168.         }
  169.  
  170.         switch (fb_depth) {
  171.         case 8:
  172.             fb_scanline = fb_linebytes * (fb_depth >> 3);
  173.             visual = VISUAL_SB1500_PALETTE;
  174.             break;
  175.         case 16:
  176.             fb_scanline = fb_linebytes * (fb_depth >> 3);
  177.             visual = VISUAL_RGB_5_6_5;
  178.             break;
  179.         case 24:
  180.             fb_scanline = fb_linebytes * 4;
  181.             visual = VISUAL_RGB_8_8_8_0;
  182.             break;
  183.         case 32:
  184.             fb_scanline = fb_linebytes * (fb_depth >> 3);
  185.             visual = VISUAL_RGB_0_8_8_8;
  186.             break;
  187.         default:
  188.             printf("Unsupported bits per pixel.\n");
  189.             return;
  190.         }
  191.        
  192.         break;
  193.     case SCR_FFB:  
  194.         fb_scanline = 8192;
  195.         visual = VISUAL_BGR_0_8_8_8;
  196.  
  197.         upa_reg = &((ofw_upa_reg_t *) prop->value)[FFB_REG_24BPP];
  198.         if (!ofw_upa_apply_ranges(node->parent, upa_reg, &fb_addr)) {
  199.             printf("Failed to determine screen address.\n");
  200.             return;
  201.         }
  202.  
  203.         break;
  204.     case SCR_CGSIX:
  205.         switch (fb_depth) {
  206.         case 8:
  207.             fb_scanline = fb_linebytes;
  208.             visual = VISUAL_INDIRECT_8;
  209.             break;
  210.         default:
  211.             printf("Not implemented.\n");
  212.             return;
  213.         }
  214.        
  215.         sbus_reg = &((ofw_sbus_reg_t *) prop->value)[0];
  216.         if (!ofw_sbus_apply_ranges(node->parent, sbus_reg, &fb_addr)) {
  217.             printf("Failed to determine screen address.\n");
  218.             return;
  219.         }
  220.    
  221.         break;
  222.     default:
  223.         panic("Unexpected type.\n");
  224.     }
  225.  
  226.     fb_properties_t props = {
  227.         .addr = fb_addr,
  228.         .offset = 0,
  229.         .x = fb_width,
  230.         .y = fb_height,
  231.         .scan = fb_scanline,
  232.         .visual = visual,
  233.     };
  234.     fb_init(&props);
  235. }
  236.  
  237. /** @}
  238.  */
  239.