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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 1999, 2000 Ralf Baechle (ralf@gnu.org)
* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
*/
#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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