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Subject[tip: x86/irq] x86/irq: Prepare consolidation of irq_alloc_info
The following commit has been merged into the x86/irq branch of tip:

Commit-ID: 874d9b3a958897e914982962fa25b3bb9dc07988
Gitweb: https://git.kernel.org/tip/874d9b3a958897e914982962fa25b3bb9dc07988
Author: Thomas Gleixner <tglx@linutronix.de>
AuthorDate: Wed, 26 Aug 2020 13:16:40 +02:00
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitterDate: Wed, 16 Sep 2020 16:52:30 +02:00

x86/irq: Prepare consolidation of irq_alloc_info

struct irq_alloc_info is a horrible zoo of unnamed structs in a union. Many
of the struct fields can be generic and don't have to be type specific like
hpet_id, ioapic_id...

Provide a generic set of members to prepare for the consolidation. The goal
is to make irq_alloc_info have the same basic member as the generic
msi_alloc_info so generic MSI domain ops can be reused and yet more mess
can be avoided when (non-PCI) device MSI support comes along.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20200826112331.849577844@linutronix.de
---
arch/x86/include/asm/hw_irq.h | 22 ++++++++++++++++------
1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
index 91b064d..b0e15f6 100644
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -44,10 +44,25 @@ enum irq_alloc_type {
X86_IRQ_ALLOC_TYPE_HPET_GET_PARENT,
};

+/**
+ * irq_alloc_info - X86 specific interrupt allocation info
+ * @type: X86 specific allocation type
+ * @flags: Flags for allocation tweaks
+ * @devid: Device ID for allocations
+ * @hwirq: Associated hw interrupt number in the domain
+ * @mask: CPU mask for vector allocation
+ * @desc: Pointer to msi descriptor
+ * @data: Allocation specific data
+ */
struct irq_alloc_info {
enum irq_alloc_type type;
u32 flags;
- const struct cpumask *mask; /* CPU mask for vector allocation */
+ u32 devid;
+ irq_hw_number_t hwirq;
+ const struct cpumask *mask;
+ struct msi_desc *desc;
+ void *data;
+
union {
int unused;
#ifdef CONFIG_HPET_TIMER
@@ -88,11 +103,6 @@ struct irq_alloc_info {
char *uv_name;
};
#endif
-#if IS_ENABLED(CONFIG_VMD)
- struct {
- struct msi_desc *desc;
- };
-#endif
};
};

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