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  1. /*
  2.  * Copyright (c) 2005 Jakub Vana
  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 ia64
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <arch.h>
  36. #include <arch/ski/ski.h>
  37. #include <arch/drivers/it.h>
  38. #include <arch/interrupt.h>
  39. #include <arch/barrier.h>
  40. #include <arch/asm.h>
  41. #include <arch/register.h>
  42. #include <arch/types.h>
  43. #include <arch/context.h>
  44. #include <arch/stack.h>
  45. #include <arch/mm/page.h>
  46. #include <mm/as.h>
  47. #include <config.h>
  48. #include <userspace.h>
  49. #include <console/console.h>
  50. #include <proc/uarg.h>
  51. #include <syscall/syscall.h>
  52. #include <ddi/irq.h>
  53. #include <ddi/device.h>
  54. #include <arch/bootinfo.h>
  55. #include <genarch/kbd/i8042.h>
  56. #include <genarch/kbd/ns16550.h>
  57. #include <smp/smp.h>
  58. #include <smp/ipi.h>
  59. #include <arch/atomic.h>
  60. #include <panic.h>
  61. #include <print.h>
  62.  
  63. #ifdef CONFIG_SMP
  64.  
  65. extern char cpu_by_id_eid_list[256][256];
  66.  
  67. static void sapic_init(void)
  68. {
  69.     bootinfo->sapic = (unative_t *)(PA2KA((unative_t)(bootinfo->sapic)) |
  70.         FW_OFFSET);
  71. }
  72.  
  73. static void ipi_broadcast_arch_all(int ipi)
  74. {
  75.     int id, eid;
  76.     int myid, myeid;
  77.    
  78.     myid = ia64_get_cpu_id();
  79.     myeid = ia64_get_cpu_eid();
  80.    
  81.     for (id = 0; id < 256; id++)
  82.         for (eid = 0; eid < 256; eid++)
  83.             if ((id != myid) || (eid != myeid))
  84.                 ipi_send_ipi(id, eid, ipi);
  85. }
  86.  
  87. void ipi_broadcast_arch(int ipi )
  88. {
  89.     int id, eid;
  90.     int myid, myeid;
  91.    
  92.     myid = ia64_get_cpu_id();
  93.     myeid = ia64_get_cpu_eid();
  94.  
  95.     for (id = 0; id < 256; id++)
  96.         for (eid = 0; eid < 256; eid++)
  97.             if ((id != myid) || (eid != myeid))
  98.                 if (cpu_by_id_eid_list[id][eid])
  99.                     ipi_send_ipi(id, eid, ipi);
  100. }
  101.  
  102. void smp_init(void)
  103. {
  104.     if (!bootinfo->hello_configured)
  105.         return;
  106.    
  107.     /*
  108.      * If we have not got system prepared by hello, we are not able to start
  109.      * AP's. This means we are running on a simulator.
  110.      */
  111.    
  112.     sapic_init();
  113.     ipi_broadcast_arch_all(bootinfo->wakeup_intno);
  114.     volatile long long brk;
  115.         for (brk = 0; brk < 100LL * 1024LL * 1024LL; brk++)
  116.         ;   /* wait a while before CPUs starts */
  117.  
  118.     config.cpu_count = 0;
  119.     int id, eid;
  120.    
  121.     for (id = 0; id < 256; id++)
  122.         for (eid = 0; eid < 256; eid++)
  123.                 if (cpu_by_id_eid_list[id][eid] == 1) {
  124.                     config.cpu_count++;
  125.                     cpu_by_id_eid_list[id][eid] = 2;
  126.             }
  127. }
  128.  
  129. void kmp(void *arg __attribute__((unused)))
  130. {
  131.     int id, eid;
  132.     int myid, myeid;
  133.    
  134.     myid = ia64_get_cpu_id();
  135.     myeid = ia64_get_cpu_eid();
  136.  
  137.     for (id = 0; id < 256; id++)
  138.         for (eid = 0; eid < 256; eid++)
  139.                 if ((id != myid) || (eid != myeid))
  140.                     if (cpu_by_id_eid_list[id][eid] != 0) {
  141.                         if (cpu_by_id_eid_list[id][eid] == 1) {
  142.                             printf("Found Late CPU ID:%d "
  143.                             "EDI:%d Not added to "
  144.                             "system!!!\n", id, eid);
  145.                             continue;
  146.                     }
  147.                     cpu_by_id_eid_list[id][eid] = 3;
  148.                     /*
  149.                      * There may be just one AP being
  150.                      * initialized at the time. After
  151.                      * it comes completely up, it is
  152.                      * supposed to wake us up.
  153.                      */
  154.                     if (waitq_sleep_timeout(
  155.                         &ap_completion_wq, 1000000,
  156.                         SYNCH_FLAGS_NONE) ==
  157.                         ESYNCH_TIMEOUT) {
  158.                         printf("%s: waiting for cpu "
  159.                             "ID:%d EID:%d timed out\n",
  160.                             __FUNCTION__, id, eid);
  161.                         }
  162.                 }
  163. }
  164.  
  165. #endif
  166.  
  167. /** @}
  168.  */
  169.  
  170.