Messages in this thread Patch in this message | | | Date | Fri, 11 Jun 2021 13:54:40 -0000 | From | "irqchip-bot for Marc Zyngier" <> | Subject | [irqchip: irq/irqchip-next] powerpc: Convert irq_domain_add_legacy_isa use to irq_domain_add_legacy |
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The following commit has been merged into the irq/irqchip-next branch of irqchip:
Commit-ID: 7c576f4d3ce43fa0fc1ac258dc4768d0f3b3b992 Gitweb: https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms/7c576f4d3ce43fa0fc1ac258dc4768d0f3b3b992 Author: Marc Zyngier <maz@kernel.org> AuthorDate: Thu, 13 Sep 2018 10:42:25 +01:00 Committer: Marc Zyngier <maz@kernel.org> CommitterDate: Thu, 10 Jun 2021 13:09:16 +01:00
powerpc: Convert irq_domain_add_legacy_isa use to irq_domain_add_legacy
irq_domain_add_legacy_isa is a pain. It only exists for the benefit of two PPC-specific drivers, and creates an ugly dependency between asm/irq.h and linux/irqdomain.h
Instead, let's convert these two drivers to irq_domain_add_legacy(), stop using NUM_ISA_INTERRUPTS by directly setting NR_IRQS_LEGACY.
The dependency cannot be broken yet as there is a lot of PPC-related code that depends on it, but that's the first step towards it.
A followup patch will remove irq_domain_add_legacy_isa.
Signed-off-by: Marc Zyngier <maz@kernel.org> --- arch/powerpc/include/asm/irq.h | 4 ++-- arch/powerpc/platforms/ps3/interrupt.c | 4 ++-- arch/powerpc/sysdev/i8259.c | 3 ++- arch/powerpc/sysdev/mpic.c | 2 +- arch/powerpc/sysdev/tsi108_pci.c | 3 ++- arch/powerpc/sysdev/xics/xics-common.c | 2 +- 6 files changed, 10 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/include/asm/irq.h b/arch/powerpc/include/asm/irq.h index b2bd588..c1eda91 100644 --- a/arch/powerpc/include/asm/irq.h +++ b/arch/powerpc/include/asm/irq.h @@ -23,8 +23,8 @@ extern atomic_t ppc_n_lost_interrupts; /* Total number of virq in the platform */ #define NR_IRQS CONFIG_NR_IRQS -/* Same thing, used by the generic IRQ code */ -#define NR_IRQS_LEGACY NUM_ISA_INTERRUPTS +/* Number of irqs reserved for a legacy isa controller */ +#define NR_IRQS_LEGACY 16 extern irq_hw_number_t virq_to_hw(unsigned int virq); diff --git a/arch/powerpc/platforms/ps3/interrupt.c b/arch/powerpc/platforms/ps3/interrupt.c index e68f4fb..4987142 100644 --- a/arch/powerpc/platforms/ps3/interrupt.c +++ b/arch/powerpc/platforms/ps3/interrupt.c @@ -46,7 +46,7 @@ * implementation equates HV plug value to Linux virq value, constrains each * interrupt to have a system wide unique plug number, and limits the range * of the plug values to map into the first dword of the bitmaps. This - * gives a usable range of plug values of {NUM_ISA_INTERRUPTS..63}. Note + * gives a usable range of plug values of {NR_IRQS_LEGACY..63}. Note * that there is no constraint on how many in this set an individual thread * can acquire. * @@ -722,7 +722,7 @@ static unsigned int ps3_get_irq(void) } #if defined(DEBUG) - if (unlikely(plug < NUM_ISA_INTERRUPTS || plug > PS3_PLUG_MAX)) { + if (unlikely(plug < NR_IRQS_LEGACY || plug > PS3_PLUG_MAX)) { dump_bmp(&per_cpu(ps3_private, 0)); dump_bmp(&per_cpu(ps3_private, 1)); BUG(); diff --git a/arch/powerpc/sysdev/i8259.c b/arch/powerpc/sysdev/i8259.c index c1d76c3..dc1a151 100644 --- a/arch/powerpc/sysdev/i8259.c +++ b/arch/powerpc/sysdev/i8259.c @@ -260,7 +260,8 @@ void i8259_init(struct device_node *node, unsigned long intack_addr) raw_spin_unlock_irqrestore(&i8259_lock, flags); /* create a legacy host */ - i8259_host = irq_domain_add_legacy_isa(node, &i8259_host_ops, NULL); + i8259_host = irq_domain_add_legacy(node, NR_IRQS_LEGACY, 0, 0, + &i8259_host_ops, NULL); if (i8259_host == NULL) { printk(KERN_ERR "i8259: failed to allocate irq host !\n"); return; diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c index b0426f2..995fb2a 100644 --- a/arch/powerpc/sysdev/mpic.c +++ b/arch/powerpc/sysdev/mpic.c @@ -602,7 +602,7 @@ static void __init mpic_scan_ht_pics(struct mpic *mpic) /* Find an mpic associated with a given linux interrupt */ static struct mpic *mpic_find(unsigned int irq) { - if (irq < NUM_ISA_INTERRUPTS) + if (irq < NR_IRQS_LEGACY) return NULL; return irq_get_chip_data(irq); diff --git a/arch/powerpc/sysdev/tsi108_pci.c b/arch/powerpc/sysdev/tsi108_pci.c index 49f9541..042bb38 100644 --- a/arch/powerpc/sysdev/tsi108_pci.c +++ b/arch/powerpc/sysdev/tsi108_pci.c @@ -404,7 +404,8 @@ void __init tsi108_pci_int_init(struct device_node *node) { DBG("Tsi108_pci_int_init: initializing PCI interrupts\n"); - pci_irq_host = irq_domain_add_legacy_isa(node, &pci_irq_domain_ops, NULL); + pci_irq_host = irq_domain_add_legacy(node, NR_IRQS_LEGACY, 0, 0, + &pci_irq_domain_ops, NULL); if (pci_irq_host == NULL) { printk(KERN_ERR "pci_irq_host: failed to allocate irq domain!\n"); return; diff --git a/arch/powerpc/sysdev/xics/xics-common.c b/arch/powerpc/sysdev/xics/xics-common.c index 7e4305c..fdf8db4 100644 --- a/arch/powerpc/sysdev/xics/xics-common.c +++ b/arch/powerpc/sysdev/xics/xics-common.c @@ -201,7 +201,7 @@ void xics_migrate_irqs_away(void) struct ics *ics; /* We can't set affinity on ISA interrupts */ - if (virq < NUM_ISA_INTERRUPTS) + if (virq < NR_IRQS_LEGACY) continue; /* We only need to migrate enabled IRQS */ if (!desc->action)
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