arch/x86/kernel/apic/apic_numachip.c - linux - Git at Google

 /*
  * 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/init.h>

 #include <asm/numachip/numachip.h>
 #include <asm/numachip/numachip_csr.h>
 #include <asm/ipi.h>
 #include <asm/apic_flat_64.h>
 #include <asm/pgtable.h>
 #include <asm/pci_x86.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 unsigned int numachip1_get_apic_id(unsigned long 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 unsigned long numachip1_set_apic_id(unsigned int id)
 {
 	unsigned long x;

 	x = ((id & 0xffU) << 24);
 	return x;
 }

 static unsigned int numachip2_get_apic_id(unsigned long x)
 {
 	u64 mcfg;

 	rdmsrl(MSR_FAM10H_MMIO_CONF_BASE, mcfg);
 	return ((mcfg >> (28 - 8)) & 0xfff00) | (x >> 24);
 }

 static unsigned long numachip2_set_apic_id(unsigned int id)
 {
 	return id << 24;
 }

 static int numachip_apic_id_valid(int apicid)
 {
 	/* Trust what bootloader passes in MADT */
 	return 1;
 }

 static int numachip_apic_id_registered(void)
 {
 	return 1;
 }

 static int numachip_phys_pkg_id(int initial_apic_id, int index_msb)
 {
 	return initial_apic_id >> index_msb;
 }

 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(int 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;

 	this_cpu_write(cpu_llc_id, node);

 	/* Account for nodes per socket in multi-core-module processors */
 	if (static_cpu_has(X86_FEATURE_NODEID_MSR)) {
 		rdmsrl(MSR_FAM10H_NODE_ID, val);
 		nodes = ((val >> 3) & 7) + 1;
 	}

 	c->phys_proc_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;
 }

 /* APIC IPIs are queued */
 static void numachip_apic_wait_icr_idle(void)
 {
 }

 /* APIC NMI IPIs are queued */
 static u32 numachip_safe_apic_wait_icr_idle(void)
 {
 	return 0;
 }

 static const struct apic apic_numachip1 __refconst = {
 	.name				= "NumaConnect system",
 	.probe				= numachip1_probe,
 	.acpi_madt_oem_check		= numachip1_acpi_madt_oem_check,
 	.apic_id_valid			= numachip_apic_id_valid,
 	.apic_id_registered		= numachip_apic_id_registered,

 	.irq_delivery_mode		= dest_Fixed,
 	.irq_dest_mode			= 0, /* physical */

 	.target_cpus			= online_target_cpus,
 	.disable_esr			= 0,
 	.dest_logical			= 0,
 	.check_apicid_used		= NULL,

 	.vector_allocation_domain	= default_vector_allocation_domain,
 	.init_apic_ldr			= flat_init_apic_ldr,

 	.ioapic_phys_id_map		= NULL,
 	.setup_apic_routing		= NULL,
 	.cpu_present_to_apicid		= default_cpu_present_to_apicid,
 	.apicid_to_cpu_present		= NULL,
 	.check_phys_apicid_present	= default_check_phys_apicid_present,
 	.phys_pkg_id			= numachip_phys_pkg_id,

 	.get_apic_id			= numachip1_get_apic_id,
 	.set_apic_id			= numachip1_set_apic_id,

 	.cpu_mask_to_apicid_and		= default_cpu_mask_to_apicid_and,

 	.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,
 	.inquire_remote_apic		= NULL, /* REMRD not supported */

 	.read				= native_apic_mem_read,
 	.write				= native_apic_mem_write,
 	.eoi_write			= native_apic_mem_write,
 	.icr_read			= native_apic_icr_read,
 	.icr_write			= native_apic_icr_write,
 	.wait_icr_idle			= numachip_apic_wait_icr_idle,
 	.safe_wait_icr_idle		= numachip_safe_apic_wait_icr_idle,
 };

 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,
 	.apic_id_valid			= numachip_apic_id_valid,
 	.apic_id_registered		= numachip_apic_id_registered,

 	.irq_delivery_mode		= dest_Fixed,
 	.irq_dest_mode			= 0, /* physical */

 	.target_cpus			= online_target_cpus,
 	.disable_esr			= 0,
 	.dest_logical			= 0,
 	.check_apicid_used		= NULL,

 	.vector_allocation_domain	= default_vector_allocation_domain,
 	.init_apic_ldr			= flat_init_apic_ldr,

 	.ioapic_phys_id_map		= NULL,
 	.setup_apic_routing		= NULL,
 	.cpu_present_to_apicid		= default_cpu_present_to_apicid,
 	.apicid_to_cpu_present		= NULL,
 	.check_phys_apicid_present	= default_check_phys_apicid_present,
 	.phys_pkg_id			= numachip_phys_pkg_id,

 	.get_apic_id			= numachip2_get_apic_id,
 	.set_apic_id			= numachip2_set_apic_id,

 	.cpu_mask_to_apicid_and		= default_cpu_mask_to_apicid_and,

 	.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,
 	.inquire_remote_apic		= NULL, /* REMRD not supported */

 	.read				= native_apic_mem_read,
 	.write				= native_apic_mem_write,
 	.eoi_write			= native_apic_mem_write,
 	.icr_read			= native_apic_icr_read,
 	.icr_write			= native_apic_icr_write,
 	.wait_icr_idle			= numachip_apic_wait_icr_idle,
 	.safe_wait_icr_idle		= numachip_safe_apic_wait_icr_idle,
 };

 apic_driver(apic_numachip2);
	/*
	* 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/init.h>

	#include <asm/numachip/numachip.h>
	#include <asm/numachip/numachip_csr.h>
	#include <asm/ipi.h>
	#include <asm/apic_flat_64.h>
	#include <asm/pgtable.h>
	#include <asm/pci_x86.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 unsigned int numachip1_get_apic_id(unsigned long 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 unsigned long numachip1_set_apic_id(unsigned int id)
	{
	unsigned long x;

	x = ((id & 0xffU) << 24);
	return x;
	}

	static unsigned int numachip2_get_apic_id(unsigned long x)
	{
	u64 mcfg;

	rdmsrl(MSR_FAM10H_MMIO_CONF_BASE, mcfg);
	return ((mcfg >> (28 - 8)) & 0xfff00) \| (x >> 24);
	}

	static unsigned long numachip2_set_apic_id(unsigned int id)
	{
	return id << 24;
	}

	static int numachip_apic_id_valid(int apicid)
	{
	/* Trust what bootloader passes in MADT */
	return 1;
	}

	static int numachip_apic_id_registered(void)
	{
	return 1;
	}

	static int numachip_phys_pkg_id(int initial_apic_id, int index_msb)
	{
	return initial_apic_id >> index_msb;
	}

	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(int 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;

	this_cpu_write(cpu_llc_id, node);

	/* Account for nodes per socket in multi-core-module processors */
	if (static_cpu_has(X86_FEATURE_NODEID_MSR)) {
	rdmsrl(MSR_FAM10H_NODE_ID, val);
	nodes = ((val >> 3) & 7) + 1;
	}

	c->phys_proc_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;
	}

	/* APIC IPIs are queued */
	static void numachip_apic_wait_icr_idle(void)
	{
	}

	/* APIC NMI IPIs are queued */
	static u32 numachip_safe_apic_wait_icr_idle(void)
	{
	return 0;
	}

	static const struct apic apic_numachip1 __refconst = {
	.name = "NumaConnect system",
	.probe = numachip1_probe,
	.acpi_madt_oem_check = numachip1_acpi_madt_oem_check,
	.apic_id_valid = numachip_apic_id_valid,
	.apic_id_registered = numachip_apic_id_registered,

	.irq_delivery_mode = dest_Fixed,
	.irq_dest_mode = 0, /* physical */

	.target_cpus = online_target_cpus,
	.disable_esr = 0,
	.dest_logical = 0,
	.check_apicid_used = NULL,

	.vector_allocation_domain = default_vector_allocation_domain,
	.init_apic_ldr = flat_init_apic_ldr,

	.ioapic_phys_id_map = NULL,
	.setup_apic_routing = NULL,
	.cpu_present_to_apicid = default_cpu_present_to_apicid,
	.apicid_to_cpu_present = NULL,
	.check_phys_apicid_present = default_check_phys_apicid_present,
	.phys_pkg_id = numachip_phys_pkg_id,

	.get_apic_id = numachip1_get_apic_id,
	.set_apic_id = numachip1_set_apic_id,

	.cpu_mask_to_apicid_and = default_cpu_mask_to_apicid_and,

	.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,
	.inquire_remote_apic = NULL, /* REMRD not supported */

	.read = native_apic_mem_read,
	.write = native_apic_mem_write,
	.eoi_write = native_apic_mem_write,
	.icr_read = native_apic_icr_read,
	.icr_write = native_apic_icr_write,
	.wait_icr_idle = numachip_apic_wait_icr_idle,
	.safe_wait_icr_idle = numachip_safe_apic_wait_icr_idle,
	};

	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,
	.apic_id_valid = numachip_apic_id_valid,
	.apic_id_registered = numachip_apic_id_registered,

	.irq_delivery_mode = dest_Fixed,
	.irq_dest_mode = 0, /* physical */

	.target_cpus = online_target_cpus,
	.disable_esr = 0,
	.dest_logical = 0,
	.check_apicid_used = NULL,

	.vector_allocation_domain = default_vector_allocation_domain,
	.init_apic_ldr = flat_init_apic_ldr,

	.ioapic_phys_id_map = NULL,
	.setup_apic_routing = NULL,
	.cpu_present_to_apicid = default_cpu_present_to_apicid,
	.apicid_to_cpu_present = NULL,
	.check_phys_apicid_present = default_check_phys_apicid_present,
	.phys_pkg_id = numachip_phys_pkg_id,

	.get_apic_id = numachip2_get_apic_id,
	.set_apic_id = numachip2_set_apic_id,

	.cpu_mask_to_apicid_and = default_cpu_mask_to_apicid_and,

	.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,
	.inquire_remote_apic = NULL, /* REMRD not supported */

	.read = native_apic_mem_read,
	.write = native_apic_mem_write,
	.eoi_write = native_apic_mem_write,
	.icr_read = native_apic_icr_read,
	.icr_write = native_apic_icr_write,
	.wait_icr_idle = numachip_apic_wait_icr_idle,
	.safe_wait_icr_idle = numachip_safe_apic_wait_icr_idle,
	};

	apic_driver(apic_numachip2);