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  1. /*
  2.  * Copyright (c) 2006 Martin Decky
  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 ppc32  
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <arch/drivers/cuda.h>
  36. #include <ipc/irq.h>
  37. #include <arch/asm.h>
  38. #include <console/console.h>
  39. #include <console/chardev.h>
  40. #include <arch/drivers/pic.h>
  41. #include <sysinfo/sysinfo.h>
  42. #include <interrupt.h>
  43. #include <stdarg.h>
  44.  
  45. #define CUDA_IRQ 10
  46. #define SPECIAL     '?'
  47.  
  48. #define PACKET_ADB  0x00
  49. #define PACKET_CUDA 0x01
  50.  
  51. #define CUDA_POWERDOWN  0x0a
  52. #define CUDA_RESET      0x11
  53.  
  54. #define RS 0x200
  55. #define B (0 * RS)
  56. #define A (1 * RS)
  57. #define SR (10 * RS)
  58. #define ACR (11 * RS)
  59.  
  60. #define SR_OUT 0x10
  61. #define TACK 0x10
  62. #define TIP 0x20
  63.  
  64.  
  65. static volatile uint8_t *cuda = NULL;
  66. static irq_t cuda_irq;      /**< Cuda's IRQ. */
  67.  
  68. static char lchars[0x80] = {
  69.     'a',
  70.     's',
  71.     'd',
  72.     'f',
  73.     'h',
  74.     'g',
  75.     'z',
  76.     'x',
  77.     'c',
  78.     'v',
  79.     SPECIAL,
  80.     'b',
  81.     'q',
  82.     'w',
  83.     'e',
  84.     'r',
  85.     'y',
  86.     't',
  87.     '1',
  88.     '2',
  89.     '3',
  90.     '4',
  91.     '6',
  92.     '5',
  93.     '=',
  94.     '9',
  95.     '7',
  96.     '-',
  97.     '8',
  98.     '0',
  99.     ']',
  100.     'o',
  101.     'u',
  102.     '[',
  103.     'i',
  104.     'p',
  105.     '\n',    /* Enter */
  106.     'l',
  107.     'j',
  108.     '\'',
  109.     'k',
  110.     ';',
  111.     '\\',
  112.     ',',
  113.     '/',
  114.     'n',
  115.     'm',
  116.     '.',
  117.     '\t',    /* Tab */
  118.     ' ',
  119.     '`',
  120.     '\b',    /* Backspace */
  121.     SPECIAL,
  122.     SPECIAL, /* Escape */
  123.     SPECIAL, /* Ctrl */
  124.     SPECIAL, /* Alt */
  125.     SPECIAL, /* Shift */
  126.     SPECIAL, /* Caps-Lock */
  127.     SPECIAL, /* RAlt */
  128.     SPECIAL, /* Left */
  129.     SPECIAL, /* Right */
  130.     SPECIAL, /* Down */
  131.     SPECIAL, /* Up */
  132.     SPECIAL,
  133.     SPECIAL,
  134.     '.',     /* Keypad . */
  135.     SPECIAL,
  136.     '*',     /* Keypad * */
  137.     SPECIAL,
  138.     '+',     /* Keypad + */
  139.     SPECIAL,
  140.     SPECIAL, /* NumLock */
  141.     SPECIAL,
  142.     SPECIAL,
  143.     SPECIAL,
  144.     '/',     /* Keypad / */
  145.     '\n',    /* Keypad Enter */
  146.     SPECIAL,
  147.     '-',     /* Keypad - */
  148.     SPECIAL,
  149.     SPECIAL,
  150.     SPECIAL,
  151.     '0',     /* Keypad 0 */
  152.     '1',     /* Keypad 1 */
  153.     '2',     /* Keypad 2 */
  154.     '3',     /* Keypad 3 */
  155.     '4',     /* Keypad 4 */
  156.     '5',     /* Keypad 5 */
  157.     '6',     /* Keypad 6 */
  158.     '7',     /* Keypad 7 */
  159.     SPECIAL,
  160.     '8',     /* Keypad 8 */
  161.     '9',     /* Keypad 9 */
  162.     SPECIAL,
  163.     SPECIAL,
  164.     SPECIAL,
  165.     SPECIAL, /* F5 */
  166.     SPECIAL, /* F6 */
  167.     SPECIAL, /* F7 */
  168.     SPECIAL, /* F3 */
  169.     SPECIAL, /* F8 */
  170.     SPECIAL, /* F9 */
  171.     SPECIAL,
  172.     SPECIAL, /* F11 */
  173.     SPECIAL,
  174.     SPECIAL, /* F13 */
  175.     SPECIAL,
  176.     SPECIAL, /* ScrollLock */
  177.     SPECIAL,
  178.     SPECIAL, /* F10 */
  179.     SPECIAL,
  180.     SPECIAL, /* F12 */
  181.     SPECIAL,
  182.     SPECIAL, /* Pause */
  183.     SPECIAL, /* Insert */
  184.     SPECIAL, /* Home */
  185.     SPECIAL, /* PageUp */
  186.     SPECIAL, /* Delete */
  187.     SPECIAL, /* F4 */
  188.     SPECIAL, /* End */
  189.     SPECIAL, /* F2 */
  190.     SPECIAL, /* PageDown */
  191.     SPECIAL  /* F1 */
  192. };
  193.  
  194.  
  195. static void receive_packet(uint8_t *kind, index_t count, uint8_t data[])
  196. {
  197.     cuda[B] = cuda[B] & ~TIP;
  198.     *kind = cuda[SR];
  199.    
  200.     index_t i;
  201.     for (i = 0; i < count; i++)
  202.         data[i] = cuda[SR];
  203.    
  204.     cuda[B] = cuda[B] | TIP;
  205. }
  206.  
  207.  
  208. /* Called from getc(). */
  209. static void cuda_resume(chardev_t *d)
  210. {
  211. }
  212.  
  213.  
  214. /* Called from getc(). */
  215. static void cuda_suspend(chardev_t *d)
  216. {
  217. }
  218.  
  219.  
  220. static char key_read(chardev_t *d)
  221. {
  222.     char ch;
  223.    
  224.     ch = 0;
  225.     return ch;
  226. }
  227.  
  228.  
  229. static chardev_t kbrd;
  230. static chardev_operations_t ops = {
  231.     .suspend = cuda_suspend,
  232.     .resume = cuda_resume,
  233.     .read = key_read
  234. };
  235.  
  236.  
  237. int cuda_get_scancode(void)
  238. {
  239.     uint8_t kind;
  240.     uint8_t data[4];
  241.    
  242.     receive_packet(&kind, 4, data);
  243.    
  244.     if ((kind == PACKET_ADB) && (data[0] == 0x40) && (data[1] == 0x2c))
  245.         return data[2];
  246.    
  247.     return -1;
  248. }
  249.  
  250. static void cuda_irq_handler(irq_t *irq, void *arg, ...)
  251. {
  252.     if ((irq->notif_cfg.notify) && (irq->notif_cfg.answerbox))
  253.         ipc_irq_send_notif(irq);
  254.     else {
  255.         int scan_code = cuda_get_scancode();
  256.        
  257.         if (scan_code != -1) {
  258.             uint8_t scancode = (uint8_t) scan_code;
  259.             if ((scancode & 0x80) != 0x80)
  260.                 chardev_push_character(&kbrd, lchars[scancode & 0x7f]);
  261.         }
  262.     }
  263. }
  264.  
  265. static irq_ownership_t cuda_claim(void)
  266. {
  267.     return IRQ_ACCEPT;
  268. }
  269.  
  270.  
  271. /** Initialize keyboard and service interrupts using kernel routine */
  272. void cuda_grab(void)
  273. {
  274.     ipl_t ipl = interrupts_disable();
  275.     spinlock_lock(&cuda_irq.lock);
  276.     cuda_irq.notif_cfg.notify = false;
  277.     spinlock_unlock(&cuda_irq.lock);
  278.     interrupts_restore(ipl);
  279. }
  280.  
  281.  
  282. /** Resume the former interrupt vector */
  283. void cuda_release(void)
  284. {
  285.     ipl_t ipl = interrupts_disable();
  286.     spinlock_lock(&cuda_irq.lock);
  287.     if (cuda_irq.notif_cfg.answerbox)
  288.         cuda_irq.notif_cfg.notify = true;
  289.     spinlock_unlock(&cuda_irq.unlock);
  290.     interrupts_restore(ipl);
  291. }
  292.  
  293.  
  294. void cuda_init(devno_t devno, uintptr_t base, size_t size)
  295. {
  296.     cuda = (uint8_t *) hw_map(base, size); 
  297.    
  298.     chardev_initialize("cuda_kbd", &kbrd, &ops);
  299.     stdin = &kbrd;
  300.    
  301.     irq_initialize(&cuda_irq);
  302.     cuda_irq.devno = devno;
  303.     cuda_irq.inr = CUDA_IRQ;
  304.     cuda_irq.claim = cuda_claim;
  305.     cuda_irq.handler = cuda_irq_handler;
  306.     irq_register(&cuda_irq);
  307.    
  308.     pic_enable_interrupt(CUDA_IRQ);
  309.  
  310.     sysinfo_set_item_val("kbd", NULL, true);
  311.     sysinfo_set_item_val("kbd.devno", NULL, devno);
  312.     sysinfo_set_item_val("kbd.inr", NULL, CUDA_IRQ);
  313.     sysinfo_set_item_val("kbd.address.virtual", NULL, base);
  314. }
  315.  
  316.  
  317. static void send_packet(const uint8_t kind, count_t count, ...)
  318. {
  319.     index_t i;
  320.     va_list va;
  321.    
  322.     cuda[B] = cuda[B] | TIP;
  323.     cuda[ACR] = cuda[ACR] | SR_OUT;
  324.     cuda[SR] = kind;
  325.     cuda[B] = cuda[B] & ~TIP;
  326.    
  327.     va_start(va, count);
  328.    
  329.     for (i = 0; i < count; i++) {
  330.         cuda[ACR] = cuda[ACR] | SR_OUT;
  331.         cuda[SR] = va_arg(va, int);
  332.         cuda[B] = cuda[B] | TACK;
  333.     }
  334.    
  335.     va_end(va);
  336.    
  337.     cuda[B] = cuda[B] | TIP;
  338. }
  339.  
  340.  
  341. void cpu_halt(void) {
  342.     asm volatile (
  343.         "b 0\n"
  344.     );
  345. }
  346.  
  347. void arch_reboot(void) {
  348.     send_packet(PACKET_CUDA, 1, CUDA_RESET);
  349.     asm volatile (
  350.         "b 0\n"
  351.     );
  352. }
  353.  
  354. /** @}
  355.  */
  356.