mirror of
https://github.com/edk2-porting/linux-next.git
synced 2025-01-14 00:24:15 +08:00
3770442e79
acpi_numa_memory_affinity_init() will be reused by arm64. Move it to drivers/acpi/numa.c to facilitate reuse. No code change. Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Robert Richter <rrichter@cavium.com> Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
114 lines
2.8 KiB
C
114 lines
2.8 KiB
C
/*
|
|
* ACPI 3.0 based NUMA setup
|
|
* Copyright 2004 Andi Kleen, SuSE Labs.
|
|
*
|
|
* Reads the ACPI SRAT table to figure out what memory belongs to which CPUs.
|
|
*
|
|
* Called from acpi_numa_init while reading the SRAT and SLIT tables.
|
|
* Assumes all memory regions belonging to a single proximity domain
|
|
* are in one chunk. Holes between them will be included in the node.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/acpi.h>
|
|
#include <linux/mmzone.h>
|
|
#include <linux/bitmap.h>
|
|
#include <linux/module.h>
|
|
#include <linux/topology.h>
|
|
#include <linux/mm.h>
|
|
#include <asm/proto.h>
|
|
#include <asm/numa.h>
|
|
#include <asm/e820.h>
|
|
#include <asm/apic.h>
|
|
#include <asm/uv/uv.h>
|
|
|
|
/* Callback for Proximity Domain -> x2APIC mapping */
|
|
void __init
|
|
acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa)
|
|
{
|
|
int pxm, node;
|
|
int apic_id;
|
|
|
|
if (srat_disabled())
|
|
return;
|
|
if (pa->header.length < sizeof(struct acpi_srat_x2apic_cpu_affinity)) {
|
|
bad_srat();
|
|
return;
|
|
}
|
|
if ((pa->flags & ACPI_SRAT_CPU_ENABLED) == 0)
|
|
return;
|
|
pxm = pa->proximity_domain;
|
|
apic_id = pa->apic_id;
|
|
if (!apic->apic_id_valid(apic_id)) {
|
|
printk(KERN_INFO "SRAT: PXM %u -> X2APIC 0x%04x ignored\n",
|
|
pxm, apic_id);
|
|
return;
|
|
}
|
|
node = acpi_map_pxm_to_node(pxm);
|
|
if (node < 0) {
|
|
printk(KERN_ERR "SRAT: Too many proximity domains %x\n", pxm);
|
|
bad_srat();
|
|
return;
|
|
}
|
|
|
|
if (apic_id >= MAX_LOCAL_APIC) {
|
|
printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%04x -> Node %u skipped apicid that is too big\n", pxm, apic_id, node);
|
|
return;
|
|
}
|
|
set_apicid_to_node(apic_id, node);
|
|
node_set(node, numa_nodes_parsed);
|
|
printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%04x -> Node %u\n",
|
|
pxm, apic_id, node);
|
|
}
|
|
|
|
/* Callback for Proximity Domain -> LAPIC mapping */
|
|
void __init
|
|
acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
|
|
{
|
|
int pxm, node;
|
|
int apic_id;
|
|
|
|
if (srat_disabled())
|
|
return;
|
|
if (pa->header.length != sizeof(struct acpi_srat_cpu_affinity)) {
|
|
bad_srat();
|
|
return;
|
|
}
|
|
if ((pa->flags & ACPI_SRAT_CPU_ENABLED) == 0)
|
|
return;
|
|
pxm = pa->proximity_domain_lo;
|
|
if (acpi_srat_revision >= 2)
|
|
pxm |= *((unsigned int*)pa->proximity_domain_hi) << 8;
|
|
node = acpi_map_pxm_to_node(pxm);
|
|
if (node < 0) {
|
|
printk(KERN_ERR "SRAT: Too many proximity domains %x\n", pxm);
|
|
bad_srat();
|
|
return;
|
|
}
|
|
|
|
if (get_uv_system_type() >= UV_X2APIC)
|
|
apic_id = (pa->apic_id << 8) | pa->local_sapic_eid;
|
|
else
|
|
apic_id = pa->apic_id;
|
|
|
|
if (apic_id >= MAX_LOCAL_APIC) {
|
|
printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%02x -> Node %u skipped apicid that is too big\n", pxm, apic_id, node);
|
|
return;
|
|
}
|
|
|
|
set_apicid_to_node(apic_id, node);
|
|
node_set(node, numa_nodes_parsed);
|
|
printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%02x -> Node %u\n",
|
|
pxm, apic_id, node);
|
|
}
|
|
|
|
int __init x86_acpi_numa_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = acpi_numa_init();
|
|
if (ret < 0)
|
|
return ret;
|
|
return srat_disabled() ? -EINVAL : 0;
|
|
}
|