Subversion Repositories HelenOS

Rev

Rev 3234 | Go to most recent revision | Blame | Last modification | View Log | Download | RSS feed

  1. /*
  2.  * Copyright (c) 2005 Ondrej Palkovsky
  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 mips32
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <interrupt.h>
  36. #include <ipc/irq.h>
  37. #include <console/chardev.h>
  38. #include <arch/drivers/msim.h>
  39. #include <arch/cp0.h>
  40. #include <console/console.h>
  41. #include <sysinfo/sysinfo.h>
  42. #include <ddi/ddi.h>
  43.  
  44. static parea_t msim_parea;
  45. static chardev_t console;
  46. static irq_t msim_irq;
  47.  
  48. static void msim_write(chardev_t *dev, const char ch);
  49. static void msim_enable(chardev_t *dev);
  50. static void msim_disable(chardev_t *dev);
  51. static char msim_do_read(chardev_t *dev);
  52.  
  53. static chardev_operations_t msim_ops = {
  54.     .resume = msim_enable,
  55.     .suspend = msim_disable,
  56.     .write = msim_write,
  57.     .read = msim_do_read,
  58. };
  59.  
  60. /** Putchar that works with MSIM & gxemul */
  61. void msim_write(chardev_t *dev, const char ch, bool silent)
  62. {
  63.     if (!silent)
  64.         *((char *) MSIM_VIDEORAM) = ch;
  65. }
  66.  
  67. /* Called from getc(). */
  68. void msim_enable(chardev_t *dev)
  69. {
  70.     cp0_unmask_int(MSIM_KBD_IRQ);
  71. }
  72.  
  73. /* Called from getc(). */
  74. void msim_disable(chardev_t *dev)
  75. {
  76.     cp0_mask_int(MSIM_KBD_IRQ);
  77. }
  78.  
  79. #include <print.h>
  80. /** Read character using polling, assume interrupts disabled */
  81. static char msim_do_read(chardev_t *dev)
  82. {
  83.     char ch;
  84.    
  85.     while (1) {
  86.         ch = *((volatile char *) MSIM_KBD_ADDRESS);
  87.         if (ch) {
  88.             if (ch == '\r')
  89.                 return '\n';
  90.             if (ch == 0x7f)
  91.                 return '\b';
  92.             return ch;
  93.         }
  94.     }
  95. }
  96.  
  97. /** Process keyboard interrupt. */
  98. static void msim_irq_handler(irq_t *irq, void *arg, ...)
  99. {
  100.     if ((irq->notif_cfg.notify) && (irq->notif_cfg.answerbox))
  101.         ipc_irq_send_notif(irq);
  102.     else {
  103.         char ch = 0;
  104.        
  105.         ch = *((char *) MSIM_KBD_ADDRESS);
  106.         if (ch =='\r')
  107.             ch = '\n';
  108.         if (ch == 0x7f)
  109.             ch = '\b';
  110.         chardev_push_character(&console, ch);
  111.     }
  112. }
  113.  
  114. static irq_ownership_t msim_claim(void)
  115. {
  116.     return IRQ_ACCEPT;
  117. }
  118.  
  119. void msim_kbd_grab(void)
  120. {
  121.     ipl_t ipl = interrupts_disable();
  122.     spinlock_lock(&msim_irq.lock);
  123.     msim_irq.notif_cfg.notify = false;
  124.     spinlock_unlock(&msim_irq.lock);
  125.     interrupts_restore(ipl);
  126. }
  127.  
  128. void msim_kbd_release(void)
  129. {
  130.     ipl_t ipl = interrupts_disable();
  131.     spinlock_lock(&msim_irq.lock);
  132.     if (msim_irq.notif_cfg.answerbox)
  133.         msim_irq.notif_cfg.notify = true;
  134.     spinlock_unlock(&msim_irq.lock);
  135.     interrupts_restore(ipl);
  136. }
  137.  
  138.  
  139. /* Return console object representing msim console */
  140. void msim_console(devno_t devno)
  141. {
  142.     chardev_initialize("msim_console", &console, &msim_ops);
  143.     stdin = &console;
  144.     stdout = &console;
  145.    
  146.     irq_initialize(&msim_irq);
  147.     msim_irq.devno = devno;
  148.     msim_irq.inr = MSIM_KBD_IRQ;
  149.     msim_irq.claim = msim_claim;
  150.     msim_irq.handler = msim_irq_handler;
  151.     irq_register(&msim_irq);
  152.    
  153.     cp0_unmask_int(MSIM_KBD_IRQ);
  154.    
  155.     sysinfo_set_item_val("kbd", NULL, true);
  156.     sysinfo_set_item_val("kbd.devno", NULL, devno);
  157.     sysinfo_set_item_val("kbd.inr", NULL, MSIM_KBD_IRQ);
  158.     sysinfo_set_item_val("kbd.address.virtual", NULL, MSIM_KBD_ADDRESS);
  159.    
  160.     msim_parea.pbase = KA2PA(MSIM_VIDEORAM);
  161.     msim_parea.vbase = MSIM_VIDEORAM;
  162.     msim_parea.frames = 1;
  163.     msim_parea.cacheable = false;
  164.     ddi_parea_register(&msim_parea);
  165.    
  166.     sysinfo_set_item_val("fb", NULL, true);
  167.     sysinfo_set_item_val("fb.kind", NULL, 3);
  168.     sysinfo_set_item_val("fb.address.physical", NULL, KA2PA(MSIM_VIDEORAM));
  169. }
  170.  
  171. /** @}
  172.  */
  173.