ip27-klconfig.c
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:3k
- /*
- * 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%pn", 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%lxn", 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;
- }