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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. #include <ddi/device.h>
  44. #include <ddi/irq.h>
  45. #include <arch/mm/page.h>
  46. #include <arch/types.h>
  47. #include <align.h>
  48. #include <func.h>
  49. #include <print.h>
  50.  
  51. kbd_type_t kbd_type = KBD_UNKNOWN;
  52.  
  53. /** Initialize keyboard.
  54.  *
  55.  * Traverse OpenFirmware device tree in order to find necessary
  56.  * info about the keyboard device.
  57.  *
  58.  * @param node Keyboard device node.
  59.  */
  60. void kbd_init(ofw_tree_node_t *node)
  61. {
  62.     size_t offset;
  63.     uintptr_t aligned_addr;
  64.     ofw_tree_property_t *prop;
  65.     const char *name;
  66.    
  67.     name = ofw_tree_node_name(node);
  68.    
  69.     /*
  70.      * Determine keyboard serial controller type.
  71.      */
  72.     if (strcmp(name, "zs") == 0)
  73.         kbd_type = KBD_Z8530;
  74.     else if (strcmp(name, "su") == 0)
  75.         kbd_type = KBD_NS16550;
  76.    
  77.     if (kbd_type == KBD_UNKNOWN) {
  78.         printf("Unknown keyboard device.\n");
  79.         return;
  80.     }
  81.    
  82.     /*
  83.      * Read 'interrupts' property.
  84.      */
  85.     uint32_t interrupts;
  86.     prop = ofw_tree_getprop(node, "interrupts");
  87.     if (!prop || !prop->value)
  88.         panic("Can't find \"interrupts\" property.\n");
  89.     interrupts = *((uint32_t *) prop->value);
  90.  
  91.     /*
  92.      * Read 'reg' property.
  93.      */
  94.     prop = ofw_tree_getprop(node, "reg");
  95.     if (!prop || !prop->value)
  96.         panic("Can't find \"reg\" property.\n");
  97.    
  98.     uintptr_t pa;
  99.     size_t size;
  100.     inr_t inr;
  101.     devno_t devno = device_assign_devno();
  102.    
  103.     switch (kbd_type) {
  104.     case KBD_Z8530:
  105.         size = ((ofw_fhc_reg_t *) prop->value)->size;
  106.         if (!ofw_fhc_apply_ranges(node->parent,
  107.             ((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,
  112.             ((ofw_fhc_reg_t *) prop->value), interrupts, &inr)) {
  113.             printf("Failed to determine keyboard interrupt.\n");
  114.             return;
  115.         }
  116.         break;
  117.        
  118.     case KBD_NS16550:
  119.         size = ((ofw_ebus_reg_t *) prop->value)->size;
  120.         if (!ofw_ebus_apply_ranges(node->parent,
  121.             ((ofw_ebus_reg_t *) prop->value), &pa)) {
  122.             printf("Failed to determine keyboard address.\n");
  123.             return;
  124.         }
  125.         if (!ofw_ebus_map_interrupt(node->parent,
  126.             ((ofw_ebus_reg_t *) prop->value), interrupts, &inr)) {
  127.             printf("Failed to determine keyboard interrupt.\n");
  128.             return;
  129.         };
  130.         break;
  131.  
  132.     default:
  133.         panic("Unexpected type.\n");
  134.     }
  135.    
  136.     /*
  137.      * We need to pass aligned address to hw_map().
  138.      * However, the physical keyboard address can
  139.      * be pretty much unaligned, depending on the
  140.      * underlying controller.
  141.      */
  142.     aligned_addr = ALIGN_DOWN(pa, PAGE_SIZE);
  143.     offset = pa - aligned_addr;
  144.     uintptr_t vaddr = hw_map(aligned_addr, offset + size) + offset;
  145.  
  146.     switch (kbd_type) {
  147. #ifdef CONFIG_Z8530
  148.     case KBD_Z8530:
  149.         z8530_init(devno, inr, vaddr);
  150.         break;
  151. #endif
  152. #ifdef CONFIG_NS16550
  153.     case KBD_NS16550:
  154.         ns16550_init(devno, inr, (ioport_t)vaddr);
  155.         break;
  156. #endif
  157.     default:
  158.         printf("Kernel is not compiled with the necessary keyboard "
  159.             "driver this machine requires.\n");
  160.     }
  161. }
  162.  
  163. /** @}
  164.  */
  165.