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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/device.h>
  50. #include <ddi/irq.h>
  51. #include <arch/mm/page.h>
  52. #include <arch/types.h>
  53. #include <align.h>
  54. #include <string.h>
  55. #include <print.h>
  56. #include <sysinfo/sysinfo.h>
  57.  
  58. kbd_type_t kbd_type = KBD_UNKNOWN;
  59.  
  60. #ifdef CONFIG_SUN_KBD
  61.  
  62. /** Initialize keyboard.
  63.  *
  64.  * Traverse OpenFirmware device tree in order to find necessary
  65.  * info about the keyboard device.
  66.  *
  67.  * @param node Keyboard device node.
  68.  */
  69. void kbd_init(ofw_tree_node_t *node)
  70. {
  71.     size_t offset;
  72.     uintptr_t aligned_addr;
  73.     ofw_tree_property_t *prop;
  74.     const char *name;
  75.     cir_t cir;
  76.     void *cir_arg;
  77.  
  78. #ifdef CONFIG_NS16550
  79.     ns16550_t *ns16550;
  80. #endif
  81. #ifdef CONFIG_Z8530
  82.     z8530_t *z8530;
  83. #endif
  84.    
  85.     name = ofw_tree_node_name(node);
  86.    
  87.     /*
  88.      * Determine keyboard serial controller type.
  89.      */
  90.     if (strcmp(name, "zs") == 0)
  91.         kbd_type = KBD_Z8530;
  92.     else if (strcmp(name, "su") == 0)
  93.         kbd_type = KBD_NS16550;
  94.    
  95.     if (kbd_type == KBD_UNKNOWN) {
  96.         printf("Unknown keyboard device.\n");
  97.         return;
  98.     }
  99.    
  100.     /*
  101.      * Read 'interrupts' property.
  102.      */
  103.     uint32_t interrupts;
  104.     prop = ofw_tree_getprop(node, "interrupts");
  105.     if ((!prop) || (!prop->value))
  106.         panic("Cannot find 'interrupt' property.");
  107.     interrupts = *((uint32_t *) prop->value);
  108.    
  109.     /*
  110.      * Read 'reg' property.
  111.      */
  112.     prop = ofw_tree_getprop(node, "reg");
  113.     if ((!prop) || (!prop->value))
  114.         panic("Cannot find 'reg' property.");
  115.    
  116.     uintptr_t pa;
  117.     size_t size;
  118.     devno_t devno;
  119.     inr_t inr;
  120.    
  121.     switch (kbd_type) {
  122.     case KBD_Z8530:
  123.         size = ((ofw_fhc_reg_t *) prop->value)->size;
  124.         if (!ofw_fhc_apply_ranges(node->parent,
  125.             ((ofw_fhc_reg_t *) prop->value), &pa)) {
  126.             printf("Failed to determine keyboard address.\n");
  127.             return;
  128.         }
  129.         if (!ofw_fhc_map_interrupt(node->parent,
  130.             ((ofw_fhc_reg_t *) prop->value), interrupts, &inr, &cir,
  131.             &cir_arg)) {
  132.             printf("Failed to determine keyboard interrupt.\n");
  133.             return;
  134.         }
  135.         break;
  136.        
  137.     case KBD_NS16550:
  138.         size = ((ofw_ebus_reg_t *) prop->value)->size;
  139.         if (!ofw_ebus_apply_ranges(node->parent,
  140.             ((ofw_ebus_reg_t *) prop->value), &pa)) {
  141.             printf("Failed to determine keyboard address.\n");
  142.             return;
  143.         }
  144.         if (!ofw_ebus_map_interrupt(node->parent,
  145.             ((ofw_ebus_reg_t *) prop->value), interrupts, &inr, &cir,
  146.             &cir_arg)) {
  147.             printf("Failed to determine keyboard interrupt.\n");
  148.             return;
  149.         };
  150.         break;
  151.     default:
  152.         panic("Unexpected keyboard type.");
  153.     }
  154.    
  155.     /*
  156.      * We need to pass aligned address to hw_map().
  157.      * However, the physical keyboard address can
  158.      * be pretty much unaligned, depending on the
  159.      * underlying controller.
  160.      */
  161.     aligned_addr = ALIGN_DOWN(pa, PAGE_SIZE);
  162.     offset = pa - aligned_addr;
  163.    
  164.     switch (kbd_type) {
  165. #ifdef CONFIG_Z8530
  166.     case KBD_Z8530:
  167.         devno = device_assign_devno();
  168.         z8530 = (z8530_t *) hw_map(aligned_addr, offset + size) +
  169.             offset;
  170.        
  171.         indev_t *kbrdin_z8530 = z8530_init(z8530, devno, inr, cir, cir_arg);
  172.         if (kbrdin_z8530)
  173.             kbrd_init(kbrdin_z8530);
  174.        
  175.         /*
  176.          * This is the necessary evil until the userspace drivers are
  177.          * entirely self-sufficient.
  178.          */
  179.         sysinfo_set_item_val("kbd", NULL, true);
  180.         sysinfo_set_item_val("kbd.type", NULL, KBD_Z8530);
  181.         sysinfo_set_item_val("kbd.devno", NULL, devno);
  182.         sysinfo_set_item_val("kbd.inr", NULL, inr);
  183.         sysinfo_set_item_val("kbd.address.kernel", NULL,
  184.             (uintptr_t) z8530);
  185.         sysinfo_set_item_val("kbd.address.physical", NULL, pa);
  186.         break;
  187. #endif
  188. #ifdef CONFIG_NS16550
  189.     case KBD_NS16550:
  190.         devno = device_assign_devno();
  191.         ns16550 = (ns16550_t *) hw_map(aligned_addr, offset + size) +
  192.             offset;
  193.        
  194.         indev_t *kbrdin_ns16550 = ns16550_init(ns16550, devno, inr, cir, cir_arg);
  195.         if (kbrdin_ns16550)
  196.             kbrd_init(kbrdin_ns16550);
  197.        
  198.         /*
  199.          * This is the necessary evil until the userspace driver is
  200.          * entirely self-sufficient.
  201.          */
  202.         sysinfo_set_item_val("kbd", NULL, true);
  203.         sysinfo_set_item_val("kbd.type", NULL, KBD_NS16550);
  204.         sysinfo_set_item_val("kbd.devno", NULL, devno);
  205.         sysinfo_set_item_val("kbd.inr", NULL, inr);
  206.         sysinfo_set_item_val("kbd.address.kernel", NULL,
  207.             (uintptr_t) ns16550);
  208.         sysinfo_set_item_val("kbd.address.physical", NULL, pa);
  209.         break;
  210. #endif
  211.     default:
  212.         printf("Kernel is not compiled with the necessary keyboard "
  213.             "driver this machine requires.\n");
  214.     }
  215. }
  216.  
  217. #endif
  218.  
  219. /** @}
  220.  */
  221.