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