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irqchip: Kill irq-partition-percpu
This code is now completely unused, and nobody will ever miss it. Signed-off-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Will Deacon <will@kernel.org> Link: https://patch.msgid.link/20251020122944.3074811-24-maz@kernel.org
This commit is contained in:
Marc Zyngier
committed by
Thomas Gleixner
Thomas Gleixner
parent
7443813f10
commit
c620438ef2
@@ -450,9 +450,6 @@ config LS_SCFG_MSI
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depends on PCI_MSI
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select IRQ_MSI_LIB
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config PARTITION_PERCPU
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bool
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config STM32MP_EXTI
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tristate "STM32MP extended interrupts and event controller"
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depends on (ARCH_STM32 && !ARM_SINGLE_ARMV7M) || COMPILE_TEST
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@@ -36,7 +36,6 @@ obj-$(CONFIG_ARM_GIC_V3) += irq-gic-v3.o irq-gic-v3-mbi.o irq-gic-common.o
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obj-$(CONFIG_ARM_GIC_ITS_PARENT) += irq-gic-its-msi-parent.o
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obj-$(CONFIG_ARM_GIC_V3_ITS) += irq-gic-v3-its.o irq-gic-v4.o
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obj-$(CONFIG_ARM_GIC_V3_ITS_FSL_MC) += irq-gic-v3-its-fsl-mc-msi.o
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obj-$(CONFIG_PARTITION_PERCPU) += irq-partition-percpu.o
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obj-$(CONFIG_ARM_GIC_V5) += irq-gic-v5.o irq-gic-v5-irs.o irq-gic-v5-its.o \
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irq-gic-v5-iwb.o
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obj-$(CONFIG_HISILICON_IRQ_MBIGEN) += irq-mbigen.o
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@@ -1,241 +0,0 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2016 ARM Limited, All Rights Reserved.
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* Author: Marc Zyngier <marc.zyngier@arm.com>
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*/
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#include <linux/bitops.h>
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#include <linux/interrupt.h>
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#include <linux/irqchip.h>
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#include <linux/irqchip/chained_irq.h>
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#include <linux/irqchip/irq-partition-percpu.h>
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#include <linux/irqdomain.h>
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#include <linux/seq_file.h>
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#include <linux/slab.h>
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struct partition_desc {
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int nr_parts;
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struct partition_affinity *parts;
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struct irq_domain *domain;
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struct irq_desc *chained_desc;
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unsigned long *bitmap;
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struct irq_domain_ops ops;
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};
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static bool partition_check_cpu(struct partition_desc *part,
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unsigned int cpu, unsigned int hwirq)
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{
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return cpumask_test_cpu(cpu, &part->parts[hwirq].mask);
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}
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static void partition_irq_mask(struct irq_data *d)
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{
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struct partition_desc *part = irq_data_get_irq_chip_data(d);
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struct irq_chip *chip = irq_desc_get_chip(part->chained_desc);
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struct irq_data *data = irq_desc_get_irq_data(part->chained_desc);
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if (partition_check_cpu(part, smp_processor_id(), d->hwirq) &&
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chip->irq_mask)
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chip->irq_mask(data);
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}
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static void partition_irq_unmask(struct irq_data *d)
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{
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struct partition_desc *part = irq_data_get_irq_chip_data(d);
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struct irq_chip *chip = irq_desc_get_chip(part->chained_desc);
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struct irq_data *data = irq_desc_get_irq_data(part->chained_desc);
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if (partition_check_cpu(part, smp_processor_id(), d->hwirq) &&
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chip->irq_unmask)
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chip->irq_unmask(data);
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}
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static int partition_irq_set_irqchip_state(struct irq_data *d,
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enum irqchip_irq_state which,
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bool val)
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{
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struct partition_desc *part = irq_data_get_irq_chip_data(d);
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struct irq_chip *chip = irq_desc_get_chip(part->chained_desc);
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struct irq_data *data = irq_desc_get_irq_data(part->chained_desc);
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if (partition_check_cpu(part, smp_processor_id(), d->hwirq) &&
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chip->irq_set_irqchip_state)
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return chip->irq_set_irqchip_state(data, which, val);
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return -EINVAL;
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}
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static int partition_irq_get_irqchip_state(struct irq_data *d,
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enum irqchip_irq_state which,
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bool *val)
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{
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struct partition_desc *part = irq_data_get_irq_chip_data(d);
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struct irq_chip *chip = irq_desc_get_chip(part->chained_desc);
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struct irq_data *data = irq_desc_get_irq_data(part->chained_desc);
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if (partition_check_cpu(part, smp_processor_id(), d->hwirq) &&
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chip->irq_get_irqchip_state)
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return chip->irq_get_irqchip_state(data, which, val);
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return -EINVAL;
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}
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static int partition_irq_set_type(struct irq_data *d, unsigned int type)
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{
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struct partition_desc *part = irq_data_get_irq_chip_data(d);
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struct irq_chip *chip = irq_desc_get_chip(part->chained_desc);
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struct irq_data *data = irq_desc_get_irq_data(part->chained_desc);
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if (chip->irq_set_type)
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return chip->irq_set_type(data, type);
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return -EINVAL;
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}
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static void partition_irq_print_chip(struct irq_data *d, struct seq_file *p)
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{
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struct partition_desc *part = irq_data_get_irq_chip_data(d);
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struct irq_chip *chip = irq_desc_get_chip(part->chained_desc);
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struct irq_data *data = irq_desc_get_irq_data(part->chained_desc);
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seq_printf(p, "%5s-%lu", chip->name, data->hwirq);
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}
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static struct irq_chip partition_irq_chip = {
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.irq_mask = partition_irq_mask,
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.irq_unmask = partition_irq_unmask,
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.irq_set_type = partition_irq_set_type,
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.irq_get_irqchip_state = partition_irq_get_irqchip_state,
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.irq_set_irqchip_state = partition_irq_set_irqchip_state,
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.irq_print_chip = partition_irq_print_chip,
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};
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static void partition_handle_irq(struct irq_desc *desc)
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{
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struct partition_desc *part = irq_desc_get_handler_data(desc);
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struct irq_chip *chip = irq_desc_get_chip(desc);
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int cpu = smp_processor_id();
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int hwirq;
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chained_irq_enter(chip, desc);
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for_each_set_bit(hwirq, part->bitmap, part->nr_parts) {
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if (partition_check_cpu(part, cpu, hwirq))
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break;
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}
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if (unlikely(hwirq == part->nr_parts))
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handle_bad_irq(desc);
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else
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generic_handle_domain_irq(part->domain, hwirq);
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chained_irq_exit(chip, desc);
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}
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static int partition_domain_alloc(struct irq_domain *domain, unsigned int virq,
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unsigned int nr_irqs, void *arg)
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{
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int ret;
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irq_hw_number_t hwirq;
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unsigned int type;
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struct irq_fwspec *fwspec = arg;
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struct partition_desc *part;
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BUG_ON(nr_irqs != 1);
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ret = domain->ops->translate(domain, fwspec, &hwirq, &type);
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if (ret)
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return ret;
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part = domain->host_data;
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set_bit(hwirq, part->bitmap);
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irq_set_chained_handler_and_data(irq_desc_get_irq(part->chained_desc),
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partition_handle_irq, part);
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irq_set_percpu_devid_partition(virq, &part->parts[hwirq].mask);
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irq_domain_set_info(domain, virq, hwirq, &partition_irq_chip, part,
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handle_percpu_devid_irq, NULL, NULL);
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irq_set_status_flags(virq, IRQ_NOAUTOEN);
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return 0;
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}
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static void partition_domain_free(struct irq_domain *domain, unsigned int virq,
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unsigned int nr_irqs)
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{
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struct irq_data *d;
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BUG_ON(nr_irqs != 1);
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d = irq_domain_get_irq_data(domain, virq);
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irq_set_handler(virq, NULL);
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irq_domain_reset_irq_data(d);
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}
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int partition_translate_id(struct partition_desc *desc, void *partition_id)
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{
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struct partition_affinity *part = NULL;
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int i;
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for (i = 0; i < desc->nr_parts; i++) {
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if (desc->parts[i].partition_id == partition_id) {
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part = &desc->parts[i];
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break;
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}
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}
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if (WARN_ON(!part)) {
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pr_err("Failed to find partition\n");
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return -EINVAL;
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}
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return i;
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}
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struct partition_desc *partition_create_desc(struct fwnode_handle *fwnode,
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struct partition_affinity *parts,
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int nr_parts,
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int chained_irq,
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const struct irq_domain_ops *ops)
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{
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struct partition_desc *desc;
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struct irq_domain *d;
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BUG_ON(!ops->select || !ops->translate);
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desc = kzalloc(sizeof(*desc), GFP_KERNEL);
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if (!desc)
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return NULL;
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desc->ops = *ops;
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desc->ops.free = partition_domain_free;
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desc->ops.alloc = partition_domain_alloc;
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d = irq_domain_create_linear(fwnode, nr_parts, &desc->ops, desc);
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if (!d)
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goto out;
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desc->domain = d;
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desc->bitmap = bitmap_zalloc(nr_parts, GFP_KERNEL);
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if (WARN_ON(!desc->bitmap))
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goto out;
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desc->chained_desc = irq_to_desc(chained_irq);
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desc->nr_parts = nr_parts;
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desc->parts = parts;
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return desc;
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out:
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if (d)
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irq_domain_remove(d);
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kfree(desc);
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return NULL;
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}
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struct irq_domain *partition_get_domain(struct partition_desc *dsc)
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{
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if (dsc)
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return dsc->domain;
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return NULL;
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}
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@@ -1,53 +0,0 @@
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2016 ARM Limited, All Rights Reserved.
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* Author: Marc Zyngier <marc.zyngier@arm.com>
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*/
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#ifndef __LINUX_IRQCHIP_IRQ_PARTITION_PERCPU_H
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#define __LINUX_IRQCHIP_IRQ_PARTITION_PERCPU_H
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#include <linux/fwnode.h>
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#include <linux/cpumask_types.h>
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#include <linux/irqdomain.h>
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struct partition_affinity {
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cpumask_t mask;
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void *partition_id;
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};
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struct partition_desc;
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#ifdef CONFIG_PARTITION_PERCPU
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int partition_translate_id(struct partition_desc *desc, void *partition_id);
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struct partition_desc *partition_create_desc(struct fwnode_handle *fwnode,
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struct partition_affinity *parts,
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int nr_parts,
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int chained_irq,
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const struct irq_domain_ops *ops);
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struct irq_domain *partition_get_domain(struct partition_desc *dsc);
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#else
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static inline int partition_translate_id(struct partition_desc *desc,
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void *partition_id)
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{
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return -EINVAL;
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}
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static inline
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struct partition_desc *partition_create_desc(struct fwnode_handle *fwnode,
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struct partition_affinity *parts,
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int nr_parts,
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int chained_irq,
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const struct irq_domain_ops *ops)
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{
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return NULL;
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}
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static inline
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struct irq_domain *partition_get_domain(struct partition_desc *dsc)
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{
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return NULL;
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}
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#endif
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#endif /* __LINUX_IRQCHIP_IRQ_PARTITION_PERCPU_H */
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