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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Numascale NumaConnect-Specific APIC Code
*
* Copyright (C) 2011 Numascale AS. All rights reserved.
*
* Send feedback to <support@numascale.com>
*
*/
#include <linux/types.h>
#include <linux/init.h>
#include <linux/pgtable.h>
#include <asm/numachip/numachip.h>
#include <asm/numachip/numachip_csr.h>
#include "local.h"
u8 numachip_system __read_mostly;
static const struct apic apic_numachip1;
static const struct apic apic_numachip2;
static void (*numachip_apic_icr_write)(int apicid, unsigned int val) __read_mostly;
static u32 numachip1_get_apic_id(u32 x)
{
unsigned long value;
unsigned int id = (x >> 24) & 0xff;
if (static_cpu_has(X86_FEATURE_NODEID_MSR)) {
rdmsrl(MSR_FAM10H_NODE_ID, value);
id |= (value << 2) & 0xff00;
}
return id;
}
static u32 numachip2_get_apic_id(u32 x)
{
u64 mcfg;
rdmsrl(MSR_FAM10H_MMIO_CONF_BASE, mcfg);
return ((mcfg >> (28 - 8)) & 0xfff00) | (x >> 24);
}
static void numachip1_apic_icr_write(int apicid, unsigned int val)
{
write_lcsr(CSR_G3_EXT_IRQ_GEN, (apicid << 16) | val);
}
static void numachip2_apic_icr_write(int apicid, unsigned int val)
{
numachip2_write32_lcsr(NUMACHIP2_APIC_ICR, (apicid << 12) | val);
}
static int numachip_wakeup_secondary(u32 phys_apicid, unsigned long start_rip)
{
numachip_apic_icr_write(phys_apicid, APIC_DM_INIT);
numachip_apic_icr_write(phys_apicid, APIC_DM_STARTUP |
(start_rip >> 12));
return 0;
}
static void numachip_send_IPI_one(int cpu, int vector)
{
int local_apicid, apicid = per_cpu(x86_cpu_to_apicid, cpu);
unsigned int dmode;
preempt_disable();
local_apicid = __this_cpu_read(x86_cpu_to_apicid);
/* Send via local APIC where non-local part matches */
if (!((apicid ^ local_apicid) >> NUMACHIP_LAPIC_BITS)) {
unsigned long flags;
local_irq_save(flags);
__default_send_IPI_dest_field(apicid, vector,
APIC_DEST_PHYSICAL);
local_irq_restore(flags);
preempt_enable();
return;
}
preempt_enable();
dmode = (vector == NMI_VECTOR) ? APIC_DM_NMI : APIC_DM_FIXED;
numachip_apic_icr_write(apicid, dmode | vector);
}
static void numachip_send_IPI_mask(const struct cpumask *mask, int vector)
{
unsigned int cpu;
for_each_cpu(cpu, mask)
numachip_send_IPI_one(cpu, vector);
}
static void numachip_send_IPI_mask_allbutself(const struct cpumask *mask,
int vector)
{
unsigned int this_cpu = smp_processor_id();
unsigned int cpu;
for_each_cpu(cpu, mask) {
if (cpu != this_cpu)
numachip_send_IPI_one(cpu, vector);
}
}
static void numachip_send_IPI_allbutself(int vector)
{
unsigned int this_cpu = smp_processor_id();
unsigned int cpu;
for_each_online_cpu(cpu) {
if (cpu != this_cpu)
numachip_send_IPI_one(cpu, vector);
}
}
static void numachip_send_IPI_all(int vector)
{
numachip_send_IPI_mask(cpu_online_mask, vector);
}
static void numachip_send_IPI_self(int vector)
{
apic_write(APIC_SELF_IPI, vector);
}
static int __init numachip1_probe(void)
{
return apic == &apic_numachip1;
}
static int __init numachip2_probe(void)
{
return apic == &apic_numachip2;
}
static void fixup_cpu_id(struct cpuinfo_x86 *c, int node)
{
u64 val;
u32 nodes = 1;
c->topo.llc_id = node;
/* Account for nodes per socket in multi-core-module processors */
if (boot_cpu_has(X86_FEATURE_NODEID_MSR)) {
rdmsrl(MSR_FAM10H_NODE_ID, val);
nodes = ((val >> 3) & 7) + 1;
}
c->topo.pkg_id = node / nodes;
}
static int __init numachip_system_init(void)
{
/* Map the LCSR area and set up the apic_icr_write function */
switch (numachip_system) {
case 1:
init_extra_mapping_uc(NUMACHIP_LCSR_BASE, NUMACHIP_LCSR_SIZE);
numachip_apic_icr_write = numachip1_apic_icr_write;
break;
case 2:
init_extra_mapping_uc(NUMACHIP2_LCSR_BASE, NUMACHIP2_LCSR_SIZE);
numachip_apic_icr_write = numachip2_apic_icr_write;
break;
default:
return 0;
}
x86_cpuinit.fixup_cpu_id = fixup_cpu_id;
x86_init.pci.arch_init = pci_numachip_init;
return 0;
}
early_initcall(numachip_system_init);
static int numachip1_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
if ((strncmp(oem_id, "NUMASC", 6) != 0) ||
(strncmp(oem_table_id, "NCONNECT", 8) != 0))
return 0;
numachip_system = 1;
return 1;
}
static int numachip2_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
if ((strncmp(oem_id, "NUMASC", 6) != 0) ||
(strncmp(oem_table_id, "NCONECT2", 8) != 0))
return 0;
numachip_system = 2;
return 1;
}
static const struct apic apic_numachip1 __refconst = {
.name = "NumaConnect system",
.probe = numachip1_probe,
.acpi_madt_oem_check = numachip1_acpi_madt_oem_check,
.dest_mode_logical = false,
.disable_esr = 0,
.cpu_present_to_apicid = default_cpu_present_to_apicid,
.max_apic_id = UINT_MAX,
.get_apic_id = numachip1_get_apic_id,
.calc_dest_apicid = apic_default_calc_apicid,
.send_IPI = numachip_send_IPI_one,
.send_IPI_mask = numachip_send_IPI_mask,
.send_IPI_mask_allbutself = numachip_send_IPI_mask_allbutself,
.send_IPI_allbutself = numachip_send_IPI_allbutself,
.send_IPI_all = numachip_send_IPI_all,
.send_IPI_self = numachip_send_IPI_self,
.wakeup_secondary_cpu = numachip_wakeup_secondary,
.read = native_apic_mem_read,
.write = native_apic_mem_write,
.eoi = native_apic_mem_eoi,
.icr_read = native_apic_icr_read,
.icr_write = native_apic_icr_write,
};
apic_driver(apic_numachip1);
static const struct apic apic_numachip2 __refconst = {
.name = "NumaConnect2 system",
.probe = numachip2_probe,
.acpi_madt_oem_check = numachip2_acpi_madt_oem_check,
.dest_mode_logical = false,
.disable_esr = 0,
.cpu_present_to_apicid = default_cpu_present_to_apicid,
.max_apic_id = UINT_MAX,
.get_apic_id = numachip2_get_apic_id,
.calc_dest_apicid = apic_default_calc_apicid,
.send_IPI = numachip_send_IPI_one,
.send_IPI_mask = numachip_send_IPI_mask,
.send_IPI_mask_allbutself = numachip_send_IPI_mask_allbutself,
.send_IPI_allbutself = numachip_send_IPI_allbutself,
.send_IPI_all = numachip_send_IPI_all,
.send_IPI_self = numachip_send_IPI_self,
.wakeup_secondary_cpu = numachip_wakeup_secondary,
.read = native_apic_mem_read,
.write = native_apic_mem_write,
.eoi = native_apic_mem_eoi,
.icr_read = native_apic_icr_read,
.icr_write = native_apic_icr_write,
};
apic_driver(apic_numachip2);
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