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