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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/drivers/ega.h>
  55. #include <arch/bootinfo.h>
  56. #include <genarch/kbd/i8042.h>
  57. #include <genarch/kbd/ns16550.h>
  58. #include <smp/smp.h>
  59. #include <smp/ipi.h>
  60. #include <arch/atomic.h>
  61. #include <panic.h>
  62. #include <print.h>
  63.  
  64. #ifdef CONFIG_SMP
  65.  
  66. extern char cpu_by_id_eid_list[256][256];
  67.  
  68. static void sapic_init(void)
  69. {
  70.     bootinfo->sapic = (unative_t *)(PA2KA((unative_t)(bootinfo->sapic)) |
  71.         FW_OFFSET);
  72. }
  73.  
  74. static void ipi_broadcast_arch_all(int ipi)
  75. {
  76.     int id,eid;
  77.     int myid, myeid;
  78.    
  79.     myid = ia64_get_cpu_id();
  80.     myeid = ia64_get_cpu_eid();
  81.    
  82.     for (id = 0; id < 256; id++)
  83.         for (eid = 0; eid < 256; eid++)
  84.             if ((id != myid) || (eid != myeid))
  85.                 ipi_send_ipi(id, eid, ipi);
  86. }
  87.  
  88. void ipi_broadcast_arch(int ipi )
  89. {
  90.     int id,eid;
  91.     int myid,myeid;
  92.    
  93.     myid = ia64_get_cpu_id();
  94.     myeid = ia64_get_cpu_eid();
  95.  
  96.     for (id = 0; id < 256; id++)
  97.         for (eid = 0; eid < 256; eid++)
  98.             if ((id != myid) || (eid != myeid))
  99.                 if (cpu_by_id_eid_list[id][eid])
  100.                     ipi_send_ipi(id, eid, ipi);
  101. }
  102.  
  103. void smp_init(void)
  104. {
  105.     if (!bootinfo->hello_configured)
  106.         return;
  107.    
  108.     /*
  109.      * If we have not system prepared by hello, we are not able to start
  110.      * AP's. This means we are running on a simulator.
  111.      */
  112.    
  113.     sapic_init();
  114.     ipi_broadcast_arch_all(bootinfo->wakeup_intno);
  115.     volatile long long brk;
  116.         for (brk = 0; brk < 100LL * 1024LL * 1024LL; brk++)
  117.         ;   /* wait a while before CPUs starts */
  118.  
  119.     config.cpu_count = 0;
  120.     int id, eid;
  121.    
  122.     for (id = 0; id < 256; id++)
  123.         for (eid = 0; eid < 256; eid++)
  124.                 if (cpu_by_id_eid_list[id][eid] == 1) {
  125.                     config.cpu_count++;
  126.                     cpu_by_id_eid_list[id][eid] = 2;
  127.             }
  128. }
  129.  
  130. void kmp(void *arg __attribute__((unused)))
  131. {
  132.     int id,eid;
  133.     int myid, myeid;
  134.    
  135.     myid = ia64_get_cpu_id();
  136.     myeid = ia64_get_cpu_eid();
  137.  
  138.     for (id = 0; id < 256; id++)
  139.         for (eid = 0; eid < 256; eid++)
  140.                 if ((id != myid) || (eid != myeid))
  141.                     if (cpu_by_id_eid_list[id][eid] != 0) {
  142.                         if (cpu_by_id_eid_list[id][eid] == 1) {
  143.                             printf("Found Late CPU ID:%d "
  144.                             "EDI:%d Not added to "
  145.                             "system!!!\n", id, eid);
  146.                             continue;
  147.                     }
  148.                     cpu_by_id_eid_list[id][eid] = 3;
  149.                     /*
  150.                      * There may be just one AP being
  151.                      * initialized at the time. After
  152.                      * it comes completely up, it is
  153.                      * supposed to wake us up.
  154.                      */
  155.                     if (waitq_sleep_timeout(
  156.                         &ap_completion_wq, 1000000,
  157.                         SYNCH_FLAGS_NONE) ==
  158.                         ESYNCH_TIMEOUT) {
  159.                         printf("%s: waiting for cpu "
  160.                             "ID:%d EID:%d timed out\n",
  161.                             __FUNCTION__, id, eid);
  162.                         }
  163.                 }
  164. }
  165.  
  166. #endif
  167.  
  168.  
  169. #ifndef CONFIG_SMP
  170.  
  171. /* This is just a hack for linking with assembler - may be removed in future. */
  172. void main_ap(void);
  173. void main_ap(void)
  174. {
  175.     while(1)
  176.         ;
  177. }
  178.  
  179. #endif
  180.  
  181. /** @}
  182.  */
  183.  
  184.