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iommu/irq_remapping: Consolidate irq domain lookup

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Now that the iommu implementations handle the X86_*_GET_PARENT_DOMAIN
types, consolidate the two getter functions.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Joerg Roedel <jroedel@suse.de>
Link: https://lore.kernel.org/r/20200826112331.741909337@linutronix.de
This commit is contained in:
Thomas Gleixner 2020-08-26 13:16:39 +02:00
parent 192a99f4bd
commit 6b6256e616
8 changed files with 6 additions and 40 deletions
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8
arch/x86/include/asm/irq_remapping.h
View File

@ -44,8 +44,6 @@ extern int irq_remapping_reenable(int);
extern int irq_remap_enable_fault_handling(void); extern int irq_remap_enable_fault_handling(void);
extern void panic_if_irq_remap(const char *msg); extern void panic_if_irq_remap(const char *msg);
extern struct irq_domain *
irq_remapping_get_ir_irq_domain(struct irq_alloc_info *info);
extern struct irq_domain * extern struct irq_domain *
irq_remapping_get_irq_domain(struct irq_alloc_info *info); irq_remapping_get_irq_domain(struct irq_alloc_info *info);
@ -73,12 +71,6 @@ static inline void panic_if_irq_remap(const char *msg)
{ {
} }
static inline struct irq_domain *
irq_remapping_get_ir_irq_domain(struct irq_alloc_info *info)
{
return NULL;
}
static inline struct irq_domain * static inline struct irq_domain *
irq_remapping_get_irq_domain(struct irq_alloc_info *info) irq_remapping_get_irq_domain(struct irq_alloc_info *info)
{ {

2
arch/x86/kernel/apic/io_apic.c
View File

@ -2298,7 +2298,7 @@ static int mp_irqdomain_create(int ioapic)
init_irq_alloc_info(&info, NULL); init_irq_alloc_info(&info, NULL);
info.type = X86_IRQ_ALLOC_TYPE_IOAPIC_GET_PARENT; info.type = X86_IRQ_ALLOC_TYPE_IOAPIC_GET_PARENT;
info.ioapic_id = mpc_ioapic_id(ioapic); info.ioapic_id = mpc_ioapic_id(ioapic);
parent = irq_remapping_get_ir_irq_domain(&info); parent = irq_remapping_get_irq_domain(&info);
if (!parent) if (!parent)
parent = x86_vector_domain; parent = x86_vector_domain;
else else

2
arch/x86/kernel/apic/msi.c
View File

@ -474,7 +474,7 @@ struct irq_domain *hpet_create_irq_domain(int hpet_id)
init_irq_alloc_info(&info, NULL); init_irq_alloc_info(&info, NULL);
info.type = X86_IRQ_ALLOC_TYPE_HPET_GET_PARENT; info.type = X86_IRQ_ALLOC_TYPE_HPET_GET_PARENT;
info.hpet_id = hpet_id; info.hpet_id = hpet_id;
parent = irq_remapping_get_ir_irq_domain(&info); parent = irq_remapping_get_irq_domain(&info);
if (parent == NULL) if (parent == NULL)
parent = x86_vector_domain; parent = x86_vector_domain;
else else

1
drivers/iommu/amd/iommu.c
View File

@ -3575,7 +3575,6 @@ struct irq_remap_ops amd_iommu_irq_ops = {
.disable = amd_iommu_disable, .disable = amd_iommu_disable,
.reenable = amd_iommu_reenable, .reenable = amd_iommu_reenable,
.enable_faulting = amd_iommu_enable_faulting, .enable_faulting = amd_iommu_enable_faulting,
.get_ir_irq_domain = get_irq_domain,
.get_irq_domain = get_irq_domain, .get_irq_domain = get_irq_domain,
}; };

4
drivers/iommu/hyperv-iommu.c
View File

@ -182,7 +182,7 @@ static int __init hyperv_enable_irq_remapping(void)
return IRQ_REMAP_X2APIC_MODE; return IRQ_REMAP_X2APIC_MODE;
} }
static struct irq_domain *hyperv_get_ir_irq_domain(struct irq_alloc_info *info) static struct irq_domain *hyperv_get_irq_domain(struct irq_alloc_info *info)
{ {
if (info->type == X86_IRQ_ALLOC_TYPE_IOAPIC_GET_PARENT) if (info->type == X86_IRQ_ALLOC_TYPE_IOAPIC_GET_PARENT)
return ioapic_ir_domain; return ioapic_ir_domain;
@ -193,7 +193,7 @@ static struct irq_domain *hyperv_get_ir_irq_domain(struct irq_alloc_info *info)
struct irq_remap_ops hyperv_irq_remap_ops = { struct irq_remap_ops hyperv_irq_remap_ops = {
.prepare = hyperv_prepare_irq_remapping, .prepare = hyperv_prepare_irq_remapping,
.enable = hyperv_enable_irq_remapping, .enable = hyperv_enable_irq_remapping,
.get_ir_irq_domain = hyperv_get_ir_irq_domain, .get_irq_domain = hyperv_get_irq_domain,
}; };
#endif #endif

1
drivers/iommu/intel/irq_remapping.c
View File

@ -1137,7 +1137,6 @@ struct irq_remap_ops intel_irq_remap_ops = {
.disable = disable_irq_remapping, .disable = disable_irq_remapping,
.reenable = reenable_irq_remapping, .reenable = reenable_irq_remapping,
.enable_faulting = enable_drhd_fault_handling, .enable_faulting = enable_drhd_fault_handling,
.get_ir_irq_domain = intel_get_irq_domain,
.get_irq_domain = intel_get_irq_domain, .get_irq_domain = intel_get_irq_domain,
}; };

23
drivers/iommu/irq_remapping.c
View File

@ -159,34 +159,13 @@ void panic_if_irq_remap(const char *msg)
panic(msg); panic(msg);
} }
/**
* irq_remapping_get_ir_irq_domain - Get the irqdomain associated with the IOMMU
* device serving request @info
* @info: interrupt allocation information, used to identify the IOMMU device
*
* It's used to get parent irqdomain for HPET and IOAPIC irqdomains.
* Returns pointer to IRQ domain, or NULL on failure.
*/
struct irq_domain *
irq_remapping_get_ir_irq_domain(struct irq_alloc_info *info)
{
if (!remap_ops || !remap_ops->get_ir_irq_domain)
return NULL;
return remap_ops->get_ir_irq_domain(info);
}
/** /**
* irq_remapping_get_irq_domain - Get the irqdomain serving the request @info * irq_remapping_get_irq_domain - Get the irqdomain serving the request @info
* @info: interrupt allocation information, used to identify the IOMMU device * @info: interrupt allocation information, used to identify the IOMMU device
* *
* There will be one PCI MSI/MSIX irqdomain associated with each interrupt
* remapping device, so this interface is used to retrieve the PCI MSI/MSIX
* irqdomain serving request @info.
* Returns pointer to IRQ domain, or NULL on failure. * Returns pointer to IRQ domain, or NULL on failure.
*/ */
struct irq_domain * struct irq_domain *irq_remapping_get_irq_domain(struct irq_alloc_info *info)
irq_remapping_get_irq_domain(struct irq_alloc_info *info)
{ {
if (!remap_ops || !remap_ops->get_irq_domain) if (!remap_ops || !remap_ops->get_irq_domain)
return NULL; return NULL;

5
drivers/iommu/irq_remapping.h
View File

@ -43,10 +43,7 @@ struct irq_remap_ops {
/* Enable fault handling */ /* Enable fault handling */
int (*enable_faulting)(void); int (*enable_faulting)(void);
/* Get the irqdomain associated the IOMMU device */ /* Get the irqdomain associated to IOMMU device */
struct irq_domain *(*get_ir_irq_domain)(struct irq_alloc_info *);
/* Get the MSI irqdomain associated with the IOMMU device */
struct irq_domain *(*get_irq_domain)(struct irq_alloc_info *); struct irq_domain *(*get_irq_domain)(struct irq_alloc_info *);
}; };