summaryrefslogtreecommitdiff
path: root/arch/mips/sgi-ip27/ip27-smp.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/sgi-ip27/ip27-smp.c')
-rw-r--r--arch/mips/sgi-ip27/ip27-smp.c115
1 files changed, 32 insertions, 83 deletions
diff --git a/arch/mips/sgi-ip27/ip27-smp.c b/arch/mips/sgi-ip27/ip27-smp.c
index 4cd47d23d81a..62733e049570 100644
--- a/arch/mips/sgi-ip27/ip27-smp.c
+++ b/arch/mips/sgi-ip27/ip27-smp.c
@@ -15,55 +15,22 @@
#include <asm/page.h>
#include <asm/processor.h>
#include <asm/ptrace.h>
+#include <asm/sn/agent.h>
#include <asm/sn/arch.h>
#include <asm/sn/gda.h>
#include <asm/sn/intr.h>
#include <asm/sn/klconfig.h>
#include <asm/sn/launch.h>
#include <asm/sn/mapped_kernel.h>
-#include <asm/sn/sn_private.h>
#include <asm/sn/types.h>
-#include <asm/sn/sn0/hubpi.h>
-#include <asm/sn/sn0/hubio.h>
-#include <asm/sn/sn0/ip27.h>
-/*
- * Takes as first input the PROM assigned cpu id, and the kernel
- * assigned cpu id as the second.
- */
-static void alloc_cpupda(cpuid_t cpu, int cpunum)
-{
- cnodeid_t node = get_cpu_cnode(cpu);
- nasid_t nasid = COMPACT_TO_NASID_NODEID(node);
-
- cputonasid(cpunum) = nasid;
- sn_cpu_info[cpunum].p_nodeid = node;
- cputoslice(cpunum) = get_cpu_slice(cpu);
-}
-
-static nasid_t get_actual_nasid(lboard_t *brd)
-{
- klhub_t *hub;
-
- if (!brd)
- return INVALID_NASID;
-
- /* find out if we are a completely disabled brd. */
- hub = (klhub_t *)find_first_component(brd, KLSTRUCT_HUB);
- if (!hub)
- return INVALID_NASID;
- if (!(hub->hub_info.flags & KLINFO_ENABLE)) /* disabled node brd */
- return hub->hub_info.physid;
- else
- return brd->brd_nasid;
-}
+#include "ip27-common.h"
-static int do_cpumask(cnodeid_t cnode, nasid_t nasid, int highest)
+static int node_scan_cpus(nasid_t nasid, int highest)
{
- static int tot_cpus_found = 0;
+ static int cpus_found;
lboard_t *brd;
klcpu_t *acpu;
- int cpus_found = 0;
cpuid_t cpuid;
brd = find_lboard((lboard_t *)KL_CONFIG_INFO(nasid), KLTYPE_IP27);
@@ -72,18 +39,17 @@ static int do_cpumask(cnodeid_t cnode, nasid_t nasid, int highest)
acpu = (klcpu_t *)find_first_component(brd, KLSTRUCT_CPU);
while (acpu) {
cpuid = acpu->cpu_info.virtid;
- /* cnode is not valid for completely disabled brds */
- if (get_actual_nasid(brd) == brd->brd_nasid)
- cpuid_to_compact_node[cpuid] = cnode;
- if (cpuid > highest)
- highest = cpuid;
/* Only let it join in if it's marked enabled */
if ((acpu->cpu_info.flags & KLINFO_ENABLE) &&
- (tot_cpus_found != NR_CPUS)) {
+ (cpus_found != NR_CPUS)) {
+ if (cpuid > highest)
+ highest = cpuid;
set_cpu_possible(cpuid, true);
- alloc_cpupda(cpuid, tot_cpus_found);
+ cputonasid(cpus_found) = nasid;
+ cputoslice(cpus_found) = acpu->cpu_info.physid;
+ sn_cpu_info[cpus_found].p_speed =
+ acpu->cpu_speed;
cpus_found++;
- tot_cpus_found++;
}
acpu = (klcpu_t *)find_component(brd, (klinfo_t *)acpu,
KLSTRUCT_CPU);
@@ -103,29 +69,15 @@ void cpu_node_probe(void)
int i, highest = 0;
gda_t *gdap = GDA;
- /*
- * Initialize the arrays to invalid nodeid (-1)
- */
- for (i = 0; i < MAX_COMPACT_NODES; i++)
- compact_to_nasid_node[i] = INVALID_NASID;
- for (i = 0; i < MAX_NASIDS; i++)
- nasid_to_compact_node[i] = INVALID_CNODEID;
- for (i = 0; i < MAXCPUS; i++)
- cpuid_to_compact_node[i] = INVALID_CNODEID;
-
- /*
- * MCD - this whole "compact node" stuff can probably be dropped,
- * as we can handle sparse numbering now
- */
nodes_clear(node_online_map);
- for (i = 0; i < MAX_COMPACT_NODES; i++) {
+ nodes_clear(node_possible_map);
+ for (i = 0; i < MAX_NUMNODES; i++) {
nasid_t nasid = gdap->g_nasidtable[i];
if (nasid == INVALID_NASID)
break;
- compact_to_nasid_node[i] = nasid;
- nasid_to_compact_node[nasid] = i;
- node_set_online(num_online_nodes());
- highest = do_cpumask(i, nasid, highest);
+ node_set_online(nasid);
+ node_set(nasid, node_possible_map);
+ highest = node_scan_cpus(nasid, highest);
}
printk("Discovered %d cpus on %d nodes\n", highest + 1, num_online_nodes());
@@ -162,11 +114,10 @@ static void ip27_send_ipi_single(int destid, unsigned int action)
irq += cputoslice(destid);
/*
- * Convert the compact hub number to the NASID to get the correct
- * part of the address space. Then set the interrupt bit associated
- * with the CPU we want to send the interrupt to.
+ * Set the interrupt bit associated with the CPU we want to
+ * send the interrupt to.
*/
- REMOTE_HUB_SEND_INTR(COMPACT_TO_NASID_NODEID(cpu_to_node(destid)), irq);
+ REMOTE_HUB_SEND_INTR(cpu_to_node(destid), irq);
}
static void ip27_send_ipi_mask(const struct cpumask *mask, unsigned int action)
@@ -177,15 +128,13 @@ static void ip27_send_ipi_mask(const struct cpumask *mask, unsigned int action)
ip27_send_ipi_single(i, action);
}
-static void ip27_init_secondary(void)
+static void ip27_init_cpu(void)
{
per_cpu_init();
}
static void ip27_smp_finish(void)
{
- extern void hub_rt_clock_event_init(void);
-
hub_rt_clock_event_init();
local_irq_enable();
}
@@ -195,7 +144,7 @@ static void ip27_smp_finish(void)
* set sp to the kernel stack of the newly created idle process, gp to the proc
* struct so that current_thread_info() will work.
*/
-static void ip27_boot_secondary(int cpu, struct task_struct *idle)
+static int ip27_boot_secondary(int cpu, struct task_struct *idle)
{
unsigned long gp = (unsigned long)task_thread_info(idle);
unsigned long sp = __KSTK_TOS(idle);
@@ -203,27 +152,26 @@ static void ip27_boot_secondary(int cpu, struct task_struct *idle)
LAUNCH_SLAVE(cputonasid(cpu), cputoslice(cpu),
(launch_proc_t)MAPPED_KERN_RW_TO_K0(smp_bootstrap),
0, (void *) sp, (void *) gp);
+ return 0;
}
static void __init ip27_smp_setup(void)
{
- cnodeid_t cnode;
+ nasid_t nasid;
- for_each_online_node(cnode) {
- if (cnode == 0)
+ for_each_online_node(nasid) {
+ if (nasid == 0)
continue;
- intr_clear_all(COMPACT_TO_NASID_NODEID(cnode));
+ intr_clear_all(nasid);
}
replicate_kernel_text();
/*
- * Assumption to be fixed: we're always booted on logical / physical
- * processor 0. While we're always running on logical processor 0
- * this still means this is physical processor zero; it might for
- * example be disabled in the firmware.
+ * PROM sets up system, that boot cpu is always first CPU on nasid 0
*/
- alloc_cpupda(0, 0);
+ cputonasid(0) = 0;
+ cputoslice(0) = LOCAL_HUB_L(PI_CPU_NUM);
}
static void __init ip27_prepare_cpus(unsigned int max_cpus)
@@ -231,12 +179,13 @@ static void __init ip27_prepare_cpus(unsigned int max_cpus)
/* We already did everything necessary earlier */
}
-struct plat_smp_ops ip27_smp_ops = {
+const struct plat_smp_ops ip27_smp_ops = {
.send_ipi_single = ip27_send_ipi_single,
.send_ipi_mask = ip27_send_ipi_mask,
- .init_secondary = ip27_init_secondary,
+ .init_secondary = ip27_init_cpu,
.smp_finish = ip27_smp_finish,
.boot_secondary = ip27_boot_secondary,
.smp_setup = ip27_smp_setup,
.prepare_cpus = ip27_prepare_cpus,
+ .prepare_boot_cpu = ip27_init_cpu,
};
generated by cgit (git 2.34.1) at 2025-12-26 21:03:13 +0000