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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.  
  38. #ifdef CONFIG_SUN_KBD
  39. #include <genarch/kbrd/kbrd.h>
  40. #endif
  41. #ifdef CONFIG_Z8530
  42. #include <genarch/drivers/z8530/z8530.h>
  43. #endif
  44. #ifdef CONFIG_NS16550
  45. #include <genarch/drivers/ns16550/ns16550.h>
  46. #endif
  47.  
  48. #include <console/console.h>
  49. #include <ddi/irq.h>
  50. #include <arch/mm/page.h>
  51. #include <arch/types.h>
  52. #include <align.h>
  53. #include <string.h>
  54. #include <print.h>
  55. #include <sysinfo/sysinfo.h>
  56.  
  57. kbd_type_t kbd_type = KBD_UNKNOWN;
  58.  
  59. #ifdef CONFIG_SUN_KBD
  60.  
  61. /** Initialize keyboard.
  62.  *
  63.  * Traverse OpenFirmware device tree in order to find necessary
  64.  * info about the keyboard device.
  65.  *
  66.  * @param node Keyboard device node.
  67.  */
  68. void kbd_init(ofw_tree_node_t *node)
  69. {
  70.     size_t offset;
  71.     uintptr_t aligned_addr;
  72.     ofw_tree_property_t *prop;
  73.     const char *name;
  74.     cir_t cir;
  75.     void *cir_arg;
  76.    
  77. #ifdef CONFIG_NS16550
  78.     ns16550_t *ns16550;
  79. #endif
  80. #ifdef CONFIG_Z8530
  81.     z8530_t *z8530;
  82. #endif
  83.    
  84.     name = ofw_tree_node_name(node);
  85.    
  86.     /*
  87.      * Determine keyboard serial controller type.
  88.      */
  89.     if (strcmp(name, "zs") == 0)
  90.         kbd_type = KBD_Z8530;
  91.     else if (strcmp(name, "su") == 0)
  92.         kbd_type = KBD_NS16550;
  93.    
  94.     if (kbd_type == KBD_UNKNOWN) {
  95.         printf("Unknown keyboard device.\n");
  96.         return;
  97.     }
  98.    
  99.     /*
  100.      * Read 'interrupts' property.
  101.      */
  102.     uint32_t interrupts;
  103.     prop = ofw_tree_getprop(node, "interrupts");
  104.     if ((!prop) || (!prop->value))
  105.         panic("Cannot find 'interrupt' property.");
  106.     interrupts = *((uint32_t *) prop->value);
  107.    
  108.     /*
  109.      * Read 'reg' property.
  110.      */
  111.     prop = ofw_tree_getprop(node, "reg");
  112.     if ((!prop) || (!prop->value))
  113.         panic("Cannot find 'reg' property.");
  114.    
  115.     uintptr_t pa;
  116.     size_t size;
  117.     inr_t inr;
  118.    
  119.     switch (kbd_type) {
  120.     case KBD_Z8530:
  121.         size = ((ofw_fhc_reg_t *) prop->value)->size;
  122.         if (!ofw_fhc_apply_ranges(node->parent,
  123.             ((ofw_fhc_reg_t *) prop->value), &pa)) {
  124.             printf("Failed to determine keyboard address.\n");
  125.             return;
  126.         }
  127.         if (!ofw_fhc_map_interrupt(node->parent,
  128.             ((ofw_fhc_reg_t *) prop->value), interrupts, &inr, &cir,
  129.             &cir_arg)) {
  130.             printf("Failed to determine keyboard interrupt.\n");
  131.             return;
  132.         }
  133.         break;
  134.        
  135.     case KBD_NS16550:
  136.         size = ((ofw_ebus_reg_t *) prop->value)->size;
  137.         if (!ofw_ebus_apply_ranges(node->parent,
  138.             ((ofw_ebus_reg_t *) prop->value), &pa)) {
  139.             printf("Failed to determine keyboard address.\n");
  140.             return;
  141.         }
  142.         if (!ofw_ebus_map_interrupt(node->parent,
  143.             ((ofw_ebus_reg_t *) prop->value), interrupts, &inr, &cir,
  144.             &cir_arg)) {
  145.             printf("Failed to determine keyboard interrupt.\n");
  146.             return;
  147.         };
  148.         break;
  149.     default:
  150.         panic("Unexpected keyboard type.");
  151.     }
  152.    
  153.     /*
  154.      * We need to pass aligned address to hw_map().
  155.      * However, the physical keyboard address can
  156.      * be pretty much unaligned, depending on the
  157.      * underlying controller.
  158.      */
  159.     aligned_addr = ALIGN_DOWN(pa, PAGE_SIZE);
  160.     offset = pa - aligned_addr;
  161.    
  162.     switch (kbd_type) {
  163. #ifdef CONFIG_Z8530
  164.     case KBD_Z8530:
  165.         z8530 = (z8530_t *) hw_map(aligned_addr, offset + size) +
  166.             offset;
  167.        
  168.         indev_t *kbrdin_z8530 = z8530_init(z8530, inr, cir, cir_arg);
  169.         if (kbrdin_z8530)
  170.             kbrd_init(kbrdin_z8530);
  171.        
  172.         /*
  173.          * This is the necessary evil until the userspace drivers are
  174.          * entirely self-sufficient.
  175.          */
  176.         sysinfo_set_item_val("kbd", NULL, true);
  177.         sysinfo_set_item_val("kbd.type", NULL, KBD_Z8530);
  178.         sysinfo_set_item_val("kbd.inr", NULL, inr);
  179.         sysinfo_set_item_val("kbd.address.kernel", NULL,
  180.             (uintptr_t) z8530);
  181.         sysinfo_set_item_val("kbd.address.physical", NULL, pa);
  182.         break;
  183. #endif
  184. #ifdef CONFIG_NS16550
  185.     case KBD_NS16550:
  186.         ns16550 = (ns16550_t *) hw_map(aligned_addr, offset + size) +
  187.             offset;
  188.        
  189.         indev_t *kbrdin_ns16550 = ns16550_init(ns16550, inr, cir, cir_arg);
  190.         if (kbrdin_ns16550)
  191.             kbrd_init(kbrdin_ns16550);
  192.        
  193.         /*
  194.          * This is the necessary evil until the userspace driver is
  195.          * entirely self-sufficient.
  196.          */
  197.         sysinfo_set_item_val("kbd", NULL, true);
  198.         sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
  199.         sysinfo_set_item_val("kbd.inr", NULL, inr);
  200.         sysinfo_set_item_val("kbd.address.kernel", NULL,
  201.             (uintptr_t) ns16550);
  202.         sysinfo_set_item_val("kbd.address.physical", NULL, pa);
  203.         break;
  204. #endif
  205.     default:
  206.         printf("Kernel is not compiled with the necessary keyboard "
  207.             "driver this machine requires.\n");
  208.     }
  209. }
  210.  
  211. #endif
  212.  
  213. /** @}
  214.  */
  215.