136 lines
2.9 KiB
C
136 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 1999, 2000 Ralf Baechle (ralf@gnu.org)
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* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
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*/
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/interrupt.h>
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#include <linux/kernel_stat.h>
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#include <linux/param.h>
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#include <linux/timex.h>
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#include <linux/mm.h>
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#include <asm/sn/klconfig.h>
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#include <asm/sn/arch.h>
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#include <asm/sn/gda.h>
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klinfo_t *find_component(lboard_t *brd, klinfo_t *kli, unsigned char struct_type)
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{
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int index, j;
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if (kli == (klinfo_t *)NULL) {
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index = 0;
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} else {
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for (j = 0; j < KLCF_NUM_COMPS(brd); j++)
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if (kli == KLCF_COMP(brd, j))
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break;
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index = j;
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if (index == KLCF_NUM_COMPS(brd)) {
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printk("find_component: Bad pointer: 0x%p\n", kli);
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return (klinfo_t *)NULL;
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}
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index++; /* next component */
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}
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for (; index < KLCF_NUM_COMPS(brd); index++) {
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kli = KLCF_COMP(brd, index);
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if (KLCF_COMP_TYPE(kli) == struct_type)
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return kli;
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}
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/* Didn't find it. */
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return (klinfo_t *)NULL;
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}
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klinfo_t *find_first_component(lboard_t *brd, unsigned char struct_type)
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{
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return find_component(brd, (klinfo_t *)NULL, struct_type);
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}
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lboard_t *find_lboard(lboard_t *start, unsigned char brd_type)
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{
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/* Search all boards stored on this node. */
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while (start) {
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if (start->brd_type == brd_type)
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return start;
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start = KLCF_NEXT(start);
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}
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/* Didn't find it. */
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return (lboard_t *)NULL;
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}
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lboard_t *find_lboard_class(lboard_t *start, unsigned char brd_type)
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{
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/* Search all boards stored on this node. */
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while (start) {
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if (KLCLASS(start->brd_type) == KLCLASS(brd_type))
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return start;
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start = KLCF_NEXT(start);
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}
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/* Didn't find it. */
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return (lboard_t *)NULL;
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}
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cnodeid_t get_cpu_cnode(cpuid_t cpu)
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{
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return CPUID_TO_COMPACT_NODEID(cpu);
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}
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klcpu_t *nasid_slice_to_cpuinfo(nasid_t nasid, int slice)
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{
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lboard_t *brd;
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klcpu_t *acpu;
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if (!(brd = find_lboard((lboard_t *)KL_CONFIG_INFO(nasid), KLTYPE_IP27)))
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return (klcpu_t *)NULL;
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if (!(acpu = (klcpu_t *)find_first_component(brd, KLSTRUCT_CPU)))
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return (klcpu_t *)NULL;
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do {
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if ((acpu->cpu_info.physid) == slice)
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return acpu;
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} while ((acpu = (klcpu_t *)find_component(brd, (klinfo_t *)acpu,
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KLSTRUCT_CPU)));
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return (klcpu_t *)NULL;
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}
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klcpu_t *sn_get_cpuinfo(cpuid_t cpu)
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{
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nasid_t nasid;
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int slice;
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klcpu_t *acpu;
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gda_t *gdap = GDA;
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cnodeid_t cnode;
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if (!(cpu < MAXCPUS)) {
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printk("sn_get_cpuinfo: illegal cpuid 0x%lx\n", cpu);
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return NULL;
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}
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cnode = get_cpu_cnode(cpu);
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if (cnode == INVALID_CNODEID)
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return NULL;
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if ((nasid = gdap->g_nasidtable[cnode]) == INVALID_NASID)
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return NULL;
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for (slice = 0; slice < CPUS_PER_NODE; slice++) {
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acpu = nasid_slice_to_cpuinfo(nasid, slice);
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if (acpu && acpu->cpu_info.virtid == cpu)
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return acpu;
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}
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return NULL;
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}
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int get_cpu_slice(cpuid_t cpu)
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{
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klcpu_t *acpu;
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if ((acpu = sn_get_cpuinfo(cpu)) == NULL)
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return -1;
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return acpu->cpu_info.physid;
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}
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