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Drivers: hv: vmbus: Add parsing of VMbus interrupt in ACPI DSDT

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On ARM64, Hyper-V now specifies the interrupt to be used by VMbus
in the ACPI DSDT.  This information is not used on x86 because the
interrupt vector must be hardcoded.  But update the generic
VMbus driver to do the parsing and pass the information to the
architecture specific code that sets up the Linux IRQ.  Update
consumers of the interrupt to get it from an architecture specific
function.

Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/1597434304-40631-1-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
This commit is contained in:
Michael Kelley
2020-08-14 12:45:04 -07:00
committed by Wei Liu
parent 1f3aed0147
commit 626b901f60
5 changed files with 38 additions and 6 deletions
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4
include/asm-generic/mshyperv.h
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@@ -89,7 +89,7 @@ static inline void vmbus_signal_eom(struct hv_message *msg, u32 old_msg_type)
}
}
void hv_setup_vmbus_irq(void (*handler)(void));
int hv_setup_vmbus_irq(int irq, void (*handler)(void));
void hv_remove_vmbus_irq(void);
void hv_enable_vmbus_irq(void);
void hv_disable_vmbus_irq(void);
@@ -99,6 +99,8 @@ void hv_remove_kexec_handler(void);
void hv_setup_crash_handler(void (*handler)(struct pt_regs *regs));
void hv_remove_crash_handler(void);
extern int vmbus_interrupt;
#if IS_ENABLED(CONFIG_HYPERV)
/*
* Hypervisor's notion of virtual processor ID is different from