genirq/irqdomain: Update irq_domain_ops.activate() signature
The irq_domain_ops.activate() callback has no return value and no way to tell the function that the activation is early. The upcoming changes to support a reservation scheme which allows to assign interrupt vectors on x86 only when the interrupt is actually requested requires: - A return value, so activation can fail at request_irq() time - Information that the activate invocation is early, i.e. before request_irq(). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Tested-by: Yu Chen <yu.c.chen@intel.com> Acked-by: Juergen Gross <jgross@suse.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Alok Kataria <akataria@vmware.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Rui Zhang <rui.zhang@intel.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Len Brown <lenb@kernel.org> Link: https://lkml.kernel.org/r/20170913213152.848490816@linutronix.de
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@ -41,8 +41,8 @@ extern int mp_irqdomain_alloc(struct irq_domain *domain, unsigned int virq,
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unsigned int nr_irqs, void *arg);
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extern void mp_irqdomain_free(struct irq_domain *domain, unsigned int virq,
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unsigned int nr_irqs);
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extern void mp_irqdomain_activate(struct irq_domain *domain,
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struct irq_data *irq_data);
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extern int mp_irqdomain_activate(struct irq_domain *domain,
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struct irq_data *irq_data, bool early);
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extern void mp_irqdomain_deactivate(struct irq_domain *domain,
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struct irq_data *irq_data);
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extern int mp_irqdomain_ioapic_idx(struct irq_domain *domain);
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@ -112,8 +112,8 @@ static void htirq_domain_free(struct irq_domain *domain, unsigned int virq,
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irq_domain_free_irqs_top(domain, virq, nr_irqs);
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}
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static void htirq_domain_activate(struct irq_domain *domain,
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struct irq_data *irq_data)
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static int htirq_domain_activate(struct irq_domain *domain,
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struct irq_data *irq_data, bool early)
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{
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struct ht_irq_msg msg;
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struct irq_cfg *cfg = irqd_cfg(irq_data);
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@ -132,6 +132,7 @@ static void htirq_domain_activate(struct irq_domain *domain,
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HT_IRQ_LOW_MT_ARBITRATED) |
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HT_IRQ_LOW_IRQ_MASKED;
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write_ht_irq_msg(irq_data->irq, &msg);
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return 0;
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}
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static void htirq_domain_deactivate(struct irq_domain *domain,
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@ -2977,8 +2977,8 @@ void mp_irqdomain_free(struct irq_domain *domain, unsigned int virq,
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irq_domain_free_irqs_top(domain, virq, nr_irqs);
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}
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void mp_irqdomain_activate(struct irq_domain *domain,
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struct irq_data *irq_data)
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int mp_irqdomain_activate(struct irq_domain *domain,
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struct irq_data *irq_data, bool early)
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{
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unsigned long flags;
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struct irq_pin_list *entry;
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@ -2988,6 +2988,7 @@ void mp_irqdomain_activate(struct irq_domain *domain,
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for_each_irq_pin(entry, data->irq_2_pin)
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__ioapic_write_entry(entry->apic, entry->pin, data->entry);
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raw_spin_unlock_irqrestore(&ioapic_lock, flags);
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return 0;
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}
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void mp_irqdomain_deactivate(struct irq_domain *domain,
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@ -127,10 +127,11 @@ static void uv_domain_free(struct irq_domain *domain, unsigned int virq,
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* Re-target the irq to the specified CPU and enable the specified MMR located
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* on the specified blade to allow the sending of MSIs to the specified CPU.
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*/
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static void uv_domain_activate(struct irq_domain *domain,
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struct irq_data *irq_data)
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static int uv_domain_activate(struct irq_domain *domain,
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struct irq_data *irq_data, bool early)
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{
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uv_program_mmr(irqd_cfg(irq_data), irq_data->chip_data);
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return 0;
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}
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/*
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@ -140,8 +140,9 @@ static int xgene_gpio_sb_to_irq(struct gpio_chip *gc, u32 gpio)
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return irq_create_fwspec_mapping(&fwspec);
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}
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static void xgene_gpio_sb_domain_activate(struct irq_domain *d,
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struct irq_data *irq_data)
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static int xgene_gpio_sb_domain_activate(struct irq_domain *d,
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struct irq_data *irq_data,
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bool early)
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{
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struct xgene_gpio_sb *priv = d->host_data;
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u32 gpio = HWIRQ_TO_GPIO(priv, irq_data->hwirq);
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@ -150,11 +151,12 @@ static void xgene_gpio_sb_domain_activate(struct irq_domain *d,
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dev_err(priv->gc.parent,
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"Unable to configure XGene GPIO standby pin %d as IRQ\n",
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gpio);
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return;
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return -ENOSPC;
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}
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xgene_gpio_set_bit(&priv->gc, priv->regs + MPA_GPIO_SEL_LO,
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gpio * 2, 1);
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return 0;
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}
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static void xgene_gpio_sb_domain_deactivate(struct irq_domain *d,
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@ -4170,8 +4170,8 @@ static void irq_remapping_free(struct irq_domain *domain, unsigned int virq,
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irq_domain_free_irqs_common(domain, virq, nr_irqs);
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}
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static void irq_remapping_activate(struct irq_domain *domain,
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struct irq_data *irq_data)
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static int irq_remapping_activate(struct irq_domain *domain,
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struct irq_data *irq_data, bool early)
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{
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struct amd_ir_data *data = irq_data->chip_data;
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struct irq_2_irte *irte_info = &data->irq_2_irte;
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@ -4180,6 +4180,7 @@ static void irq_remapping_activate(struct irq_domain *domain,
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if (iommu)
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iommu->irte_ops->activate(data->entry, irte_info->devid,
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irte_info->index);
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return 0;
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}
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static void irq_remapping_deactivate(struct irq_domain *domain,
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@ -1389,12 +1389,13 @@ static void intel_irq_remapping_free(struct irq_domain *domain,
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irq_domain_free_irqs_common(domain, virq, nr_irqs);
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}
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static void intel_irq_remapping_activate(struct irq_domain *domain,
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struct irq_data *irq_data)
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static int intel_irq_remapping_activate(struct irq_domain *domain,
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struct irq_data *irq_data, bool early)
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{
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struct intel_ir_data *data = irq_data->chip_data;
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modify_irte(&data->irq_2_iommu, &data->irte_entry);
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return 0;
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}
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static void intel_irq_remapping_deactivate(struct irq_domain *domain,
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@ -2186,8 +2186,8 @@ static int its_irq_domain_alloc(struct irq_domain *domain, unsigned int virq,
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return 0;
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}
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static void its_irq_domain_activate(struct irq_domain *domain,
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struct irq_data *d)
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static int its_irq_domain_activate(struct irq_domain *domain,
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struct irq_data *d, bool early)
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{
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struct its_device *its_dev = irq_data_get_irq_chip_data(d);
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u32 event = its_get_event_id(d);
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@ -2205,6 +2205,7 @@ static void its_irq_domain_activate(struct irq_domain *domain,
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/* Map the GIC IRQ and event to the device */
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its_send_mapti(its_dev, d->hwirq, event);
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return 0;
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}
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static void its_irq_domain_deactivate(struct irq_domain *domain,
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@ -2678,8 +2679,8 @@ static int its_vpe_irq_domain_alloc(struct irq_domain *domain, unsigned int virq
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return err;
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}
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static void its_vpe_irq_domain_activate(struct irq_domain *domain,
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struct irq_data *d)
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static int its_vpe_irq_domain_activate(struct irq_domain *domain,
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struct irq_data *d, bool early)
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{
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struct its_vpe *vpe = irq_data_get_irq_chip_data(d);
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@ -2687,6 +2688,7 @@ static void its_vpe_irq_domain_activate(struct irq_domain *domain,
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vpe->col_idx = cpumask_first(cpu_online_mask);
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its_send_vmapp(vpe, true);
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its_send_vinvall(vpe);
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return 0;
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}
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static void its_vpe_irq_domain_deactivate(struct irq_domain *domain,
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@ -289,13 +289,14 @@ static int stm32_gpio_domain_translate(struct irq_domain *d,
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return 0;
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}
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static void stm32_gpio_domain_activate(struct irq_domain *d,
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struct irq_data *irq_data)
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static int stm32_gpio_domain_activate(struct irq_domain *d,
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struct irq_data *irq_data, bool early)
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{
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struct stm32_gpio_bank *bank = d->host_data;
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struct stm32_pinctrl *pctl = dev_get_drvdata(bank->gpio_chip.parent);
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regmap_field_write(pctl->irqmux[irq_data->hwirq], bank->bank_nr);
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return 0;
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}
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static int stm32_gpio_domain_alloc(struct irq_domain *d,
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@ -111,7 +111,7 @@ struct irq_domain_ops {
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unsigned int nr_irqs, void *arg);
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void (*free)(struct irq_domain *d, unsigned int virq,
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unsigned int nr_irqs);
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void (*activate)(struct irq_domain *d, struct irq_data *irq_data);
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int (*activate)(struct irq_domain *d, struct irq_data *irqd, bool early);
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void (*deactivate)(struct irq_domain *d, struct irq_data *irq_data);
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int (*translate)(struct irq_domain *d, struct irq_fwspec *fwspec,
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unsigned long *out_hwirq, unsigned int *out_type);
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@ -1690,7 +1690,7 @@ static void __irq_domain_activate_irq(struct irq_data *irq_data)
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if (irq_data->parent_data)
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__irq_domain_activate_irq(irq_data->parent_data);
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if (domain->ops->activate)
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domain->ops->activate(domain, irq_data);
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domain->ops->activate(domain, irq_data, false);
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}
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}
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@ -102,13 +102,14 @@ int msi_domain_set_affinity(struct irq_data *irq_data,
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return ret;
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}
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static void msi_domain_activate(struct irq_domain *domain,
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struct irq_data *irq_data)
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static int msi_domain_activate(struct irq_domain *domain,
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struct irq_data *irq_data, bool early)
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{
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struct msi_msg msg;
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BUG_ON(irq_chip_compose_msi_msg(irq_data, &msg));
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irq_chip_write_msi_msg(irq_data, &msg);
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return 0;
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}
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static void msi_domain_deactivate(struct irq_domain *domain,
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