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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/kbd.h>
  36. #include <genarch/ofw/ofw_tree.h>
  37. #ifdef CONFIG_Z8530
  38. #include <genarch/kbd/z8530.h>
  39. #endif
  40. #ifdef CONFIG_NS16550
  41. #include <genarch/kbd/ns16550.h>
  42. #endif
  43.  
  44. #include <arch/mm/page.h>
  45. #include <arch/types.h>
  46. #include <typedefs.h>
  47. #include <align.h>
  48. #include <func.h>
  49. #include <print.h>
  50.  
  51. volatile uint8_t *kbd_virt_address = NULL;
  52.  
  53. kbd_type_t kbd_type = KBD_UNKNOWN;
  54.  
  55. /** Initialize keyboard.
  56.  *
  57.  * Traverse OpenFirmware device tree in order to find necessary
  58.  * info about the keyboard device.
  59.  *
  60.  * @param node Keyboard device node.
  61.  */
  62. void kbd_init(ofw_tree_node_t *node)
  63. {
  64.     size_t offset;
  65.     uintptr_t aligned_addr;
  66.     ofw_tree_property_t *prop;
  67.     const char *name;
  68.    
  69.     name = ofw_tree_node_name(node);
  70.    
  71.     /*
  72.      * Determine keyboard serial controller type.
  73.      */
  74.     if (strcmp(name, "zs") == 0)
  75.         kbd_type = KBD_Z8530;
  76.     else if (strcmp(name, "su") == 0)
  77.         kbd_type = KBD_NS16550;
  78.    
  79.     if (kbd_type == KBD_UNKNOWN) {
  80.         printf("Unknown keyboard device.\n");
  81.         return;
  82.     }
  83.    
  84.     /*
  85.      * Read 'interrupts' property.
  86.      */
  87.     uint32_t interrupts;
  88.     prop = ofw_tree_getprop(node, "interrupts");
  89.     if (!prop || !prop->value)
  90.         panic("Can't find \"interrupts\" property.\n");
  91.     interrupts = *((uint32_t *) prop->value);
  92.  
  93.     /*
  94.      * Read 'reg' property.
  95.      */
  96.     prop = ofw_tree_getprop(node, "reg");
  97.     if (!prop || !prop->value)
  98.         panic("Can't find \"reg\" property.\n");
  99.    
  100.     uintptr_t pa;
  101.     size_t size;
  102.     int inr;
  103.    
  104.     switch (kbd_type) {
  105.     case KBD_Z8530:
  106.         size = ((ofw_fhc_reg_t *) prop->value)->size;
  107.         if (!ofw_fhc_apply_ranges(node->parent, ((ofw_fhc_reg_t *) prop->value) , &pa)) {
  108.             printf("Failed to determine keyboard address.\n");
  109.             return;
  110.         }
  111.         if (!ofw_fhc_map_interrupt(node->parent, ((ofw_fhc_reg_t *) prop->value), interrupts, &inr)) {
  112.             printf("Failed to determine keyboard interrupt.\n");
  113.             return;
  114.         }
  115.         break;
  116.     case KBD_NS16550:
  117.         size = ((ofw_ebus_reg_t *) prop->value)->size;
  118.         if (!ofw_ebus_apply_ranges(node->parent, ((ofw_ebus_reg_t *) prop->value) , &pa)) {
  119.             printf("Failed to determine keyboard address.\n");
  120.             return;
  121.         }
  122.         if (!ofw_ebus_map_interrupt(node->parent, ((ofw_ebus_reg_t *) prop->value), interrupts, &inr)) {
  123.             printf("Failed to determine keyboard interrupt.\n");
  124.             return;
  125.         }
  126.         break;
  127.     default:
  128.         panic("Unexpected type.\n");
  129.     }
  130.    
  131.     /*
  132.      * We need to pass aligned address to hw_map().
  133.      * However, the physical keyboard address can
  134.      * be pretty much unaligned, depending on the
  135.      * underlying controller.
  136.      */
  137.     aligned_addr = ALIGN_DOWN(pa, PAGE_SIZE);
  138.     offset = pa - aligned_addr;
  139.     kbd_virt_address = (uint8_t *) hw_map(aligned_addr, offset + size) + offset;
  140.  
  141.     switch (kbd_type) {
  142. #ifdef CONFIG_Z8530
  143.     case KBD_Z8530:
  144.         z8530_init();
  145.         break;
  146. #endif
  147. #ifdef CONFIG_NS16550
  148.     case KBD_NS16550:
  149.         ns16550_init();
  150.         break;
  151. #endif
  152.     default:
  153.         printf("Kernel is not compiled with the necessary keyboard driver this machine requires.\n");
  154.     }
  155. }
  156.  
  157. /** @}
  158.  */
  159.