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powerpc: Move the use of irq_domain_add_nomap() behind a config option

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Only a handful of old PPC systems are still using the old 'nomap'
variant of the irqdomain library. Move the associated definitions
behind a configuration option, which will allow us to make some
more radical changes.

Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Marc Zyngier 2021-04-04 13:06:39 +01:00
parent 1da027362a
commit e37af8011a
7 changed files with 17 additions and 2 deletions
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1
arch/powerpc/platforms/cell/Kconfig
View file

@ -35,6 +35,7 @@ config PPC_IBM_CELL_BLADE
config AXON_MSI
bool
depends on PPC_IBM_CELL_BLADE && PCI_MSI
select IRQ_DOMAIN_NOMAP
default y
menu "Cell Broadband Engine options"

1
arch/powerpc/platforms/powermac/Kconfig
View file

@ -24,6 +24,7 @@ config PPC_PMAC32_PSURGE
bool "Support for powersurge upgrade cards" if EXPERT
depends on SMP && PPC32 && PPC_PMAC
select PPC_SMP_MUXED_IPI
select IRQ_DOMAIN_NOMAP
default y
help
The powersurge cpu boards can be used in the generation

1
arch/powerpc/platforms/ps3/Kconfig
View file

@ -7,6 +7,7 @@ config PPC_PS3
select USB_OHCI_BIG_ENDIAN_MMIO
select USB_EHCI_BIG_ENDIAN_MMIO
select HAVE_PCI
select IRQ_DOMAIN_NOMAP
help
This option enables support for the Sony PS3 game console
and other platforms using the PS3 hypervisor. Enabling this

1
arch/powerpc/sysdev/xive/Kconfig
View file

@ -3,6 +3,7 @@ config PPC_XIVE
bool
select PPC_SMP_MUXED_IPI
select HARDIRQS_SW_RESEND
select IRQ_DOMAIN_NOMAP
config PPC_XIVE_NATIVE
bool

8
include/linux/irqdomain.h
View file

@ -345,6 +345,8 @@ static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_no
{
return __irq_domain_add(of_node_to_fwnode(of_node), size, size, 0, ops, host_data);
}
#ifdef CONFIG_IRQ_DOMAIN_NOMAP
static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_node,
unsigned int max_irq,
const struct irq_domain_ops *ops,
@ -352,6 +354,10 @@ static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_nod
{
return __irq_domain_add(of_node_to_fwnode(of_node), 0, max_irq, max_irq, ops, host_data);
}
extern unsigned int irq_create_direct_mapping(struct irq_domain *host);
#endif
static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node,
const struct irq_domain_ops *ops,
void *host_data)
@ -408,8 +414,6 @@ static inline unsigned int irq_linear_revmap(struct irq_domain *domain,
return irq_find_mapping(domain, hwirq);
}
extern unsigned int irq_create_direct_mapping(struct irq_domain *host);
extern const struct irq_domain_ops irq_domain_simple_ops;
/* stock xlate functions */

5
kernel/irq/Kconfig
View file

@ -70,6 +70,11 @@ config IRQ_DOMAIN_HIERARCHY
bool
select IRQ_DOMAIN
# Support for obsolete non-mapping irq domains
config IRQ_DOMAIN_NOMAP
bool
select IRQ_DOMAIN
# Support for hierarchical fasteoi+edge and fasteoi+level handlers
config IRQ_FASTEOI_HIERARCHY_HANDLERS
bool

2
kernel/irq/irqdomain.c
View file

@ -604,6 +604,7 @@ void irq_domain_associate_many(struct irq_domain *domain, unsigned int irq_base,
}
EXPORT_SYMBOL_GPL(irq_domain_associate_many);
#ifdef CONFIG_IRQ_DOMAIN_NOMAP
/**
* irq_create_direct_mapping() - Allocate an irq for direct mapping
* @domain: domain to allocate the irq for or NULL for default domain
@ -644,6 +645,7 @@ unsigned int irq_create_direct_mapping(struct irq_domain *domain)
return virq;
}
EXPORT_SYMBOL_GPL(irq_create_direct_mapping);
#endif
/**
* irq_create_mapping_affinity() - Map a hardware interrupt into linux irq space