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ip27-klconfig.c

/*
 * Copyright (C) 1999, 2000 Ralf Baechle (ralf@gnu.org)
 * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
 */
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/kernel_stat.h>
#include <linux/param.h>
#include <linux/timex.h>
#include <linux/mm.h>

#include <asm/sn/klconfig.h>
#include <asm/sn/arch.h>
#include <asm/sn/gda.h>

klinfo_t *find_component(lboard_t *brd, klinfo_t *kli, unsigned char struct_type)
{
      int index, j;

      if (kli == (klinfo_t *)NULL) {
            index = 0;
      } else {
            for (j = 0; j < KLCF_NUM_COMPS(brd); j++)
                  if (kli == KLCF_COMP(brd, j))
                        break;
            index = j;
            if (index == KLCF_NUM_COMPS(brd)) {
                  printk("find_component: Bad pointer: 0x%p\n", kli);
                  return (klinfo_t *)NULL;
            }
            index++;          /* next component */
      }

      for (; index < KLCF_NUM_COMPS(brd); index++) {
            kli = KLCF_COMP(brd, index);
            if (KLCF_COMP_TYPE(kli) == struct_type)
                  return kli;
      }

      /* Didn't find it. */
      return (klinfo_t *)NULL;
}

klinfo_t *find_first_component(lboard_t *brd, unsigned char struct_type)
{
      return find_component(brd, (klinfo_t *)NULL, struct_type);
}

lboard_t * find_lboard(lboard_t *start, unsigned char brd_type)
{
      /* Search all boards stored on this node. */
      while (start) {
            if (start->brd_type == brd_type)
                  return start;
            start = KLCF_NEXT(start);
      }
      /* Didn't find it. */
      return (lboard_t *)NULL;
}

lboard_t * find_lboard_class(lboard_t *start, unsigned char brd_type)
{
      /* Search all boards stored on this node. */
      while (start) {
            if (KLCLASS(start->brd_type) == KLCLASS(brd_type))
                  return start;
            start = KLCF_NEXT(start);
      }

      /* Didn't find it. */
      return (lboard_t *)NULL;
}

cnodeid_t get_cpu_cnode(cpuid_t cpu)
{
      return CPUID_TO_COMPACT_NODEID(cpu);
}

klcpu_t * nasid_slice_to_cpuinfo(nasid_t nasid, int slice)
{
      lboard_t *brd;
      klcpu_t *acpu;

      if (!(brd = find_lboard((lboard_t *)KL_CONFIG_INFO(nasid), KLTYPE_IP27)))
            return (klcpu_t *)NULL;

      if (!(acpu = (klcpu_t *)find_first_component(brd, KLSTRUCT_CPU)))
            return (klcpu_t *)NULL;

      do {
            if ((acpu->cpu_info.physid) == slice)
                  return acpu;
      } while ((acpu = (klcpu_t *)find_component(brd, (klinfo_t *)acpu,
                                                KLSTRUCT_CPU)));
      return (klcpu_t *)NULL;
}

klcpu_t * sn_get_cpuinfo(cpuid_t cpu)
{
      nasid_t nasid;
      int slice;
      klcpu_t *acpu;
      gda_t *gdap = GDA;
      cnodeid_t cnode;

      if (!(cpu < MAXCPUS)) {
            printk("sn_get_cpuinfo: illegal cpuid 0x%lx\n", cpu);
            return NULL;
      }

      cnode = get_cpu_cnode(cpu);
      if (cnode == INVALID_CNODEID)
            return NULL;

      if ((nasid = gdap->g_nasidtable[cnode]) == INVALID_NASID)
            return NULL;

      for (slice = 0; slice < CPUS_PER_NODE; slice++) {
            acpu = nasid_slice_to_cpuinfo(nasid, slice);
            if (acpu && acpu->cpu_info.virtid == cpu)
                  return acpu;
      }
      return NULL;
}

int get_cpu_slice(cpuid_t cpu)
{
      klcpu_t *acpu;

      if ((acpu = sn_get_cpuinfo(cpu)) == NULL)
            return -1;
      return acpu->cpu_info.physid;
}

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