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  1. /*
  2.  * Copyright (C) 2005 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 sparc64interrupt
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <arch/interrupt.h>
  36. #include <arch/trap/interrupt.h>
  37. #include <interrupt.h>
  38. #include <arch/drivers/fhc.h>
  39. #include <arch/drivers/kbd.h>
  40. #include <typedefs.h>
  41. #include <arch/types.h>
  42. #include <debug.h>
  43. #include <ipc/sysipc.h>
  44. #include <arch/asm.h>
  45. #include <arch/barrier.h>
  46. #include <print.h>
  47. #include <genarch/kbd/z8530.h>
  48. #include <arch.h>
  49. #include <mm/tlb.h>
  50. #include <config.h>
  51.  
  52. /** Register Interrupt Level Handler.
  53.  *
  54.  * @param n Interrupt Level (1 - 15).
  55.  * @param name Short descriptive string.
  56.  * @param f Handler.
  57.  */
  58. void interrupt_register(int n, const char *name, iroutine f)
  59. {
  60.     ASSERT(n >= IVT_FIRST && n <= IVT_ITEMS);
  61.    
  62.     exc_register(n - 1, name, f);
  63. }
  64.  
  65. /* Reregister irq to be IPC-ready */
  66. void irq_ipc_bind_arch(unative_t irq)
  67. {
  68. #ifdef CONFIG_Z8530
  69.     if (kbd_type == KBD_Z8530)
  70.         z8530_belongs_to_kernel = false;
  71. #endif
  72. }
  73.  
  74. void interrupt(int n, istate_t *istate)
  75. {
  76.     uint64_t intrcv;
  77.     uint64_t data0;
  78.  
  79.     intrcv = asi_u64_read(ASI_INTR_RECEIVE, 0);
  80.     data0 = asi_u64_read(ASI_UDB_INTR_R, ASI_UDB_INTR_R_DATA_0);
  81.  
  82.     switch (data0) {
  83. #ifdef CONFIG_Z8530
  84.     case Z8530_INTRCV_DATA0:
  85.         if (kbd_type != KBD_Z8530)
  86.             break;
  87.         /*
  88.          * So far, we know we got this interrupt through the FHC.
  89.          * Since we don't have enough information about the FHC and
  90.          * because the interrupt looks like level sensitive,
  91.          * we cannot handle it by scheduling one of the level
  92.          * interrupt traps. Call the interrupt handler directly.
  93.          */
  94.  
  95.         if (z8530_belongs_to_kernel)
  96.             z8530_interrupt();
  97.         else
  98.             ipc_irq_send_notif(0);
  99.         fhc_clear_interrupt(central_fhc, data0);
  100.         break;
  101.  
  102. #endif
  103.     default:
  104.         if (data0 > config.base) {
  105.             /*
  106.              * This is a cross-call.
  107.              * data0 contains address of kernel function.
  108.              * We call the function only after we verify
  109.              * it is on of the supported ones.
  110.              */
  111. #ifdef CONFIG_SMP
  112.             if (data0 == (uintptr_t) tlb_shootdown_ipi_recv) {
  113.                 tlb_shootdown_ipi_recv();
  114.                 break;
  115.             }
  116. #endif
  117.         }
  118.            
  119.         printf("cpu%d: spurious interrupt (intrcv=%#llx, data0=%#llx)\n", CPU->id, intrcv, data0);
  120.         break;
  121.     }
  122.  
  123.     membar();
  124.     asi_u64_write(ASI_INTR_RECEIVE, 0, 0);
  125. }
  126.  
  127. /** @}
  128.  */
  129.