xen/hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ (383ff518) · Commits · 戴 / test

This new delivery type which is for ARM shares the same value with HVM_PARAM_CALLBACK_TYPE_VECTOR which is for x86. val[15:8] is flag: val[7:0] is a PPI. To the flag, bit 8 stands the interrupt mode is edge(1) or level(0) and bit 9 stands the interrupt polarity is active low(1) or high(0). Signed-off-by:

Shannon Zhao <shannon.zhao@linaro.org> Acked-by:

Stefano Stabellini <stefano.stabellini@eu.citrix.com> Reviewed-by:

Julien Grall <julien.grall@arm.com> Tested-by:

Julien Grall <julien.grall@arm.com>

include/xen/interface/hvm/params.h

+13 −0

Original line number	Diff line number	Diff line
		@@ -47,11 +47,24 @@
		* Domain = val[47:32], Bus = val[31:16] DevFn = val[15:8], IntX = val[1:0]
		*/

		#if defined(__i386__) \|\| defined(__x86_64__)
		#define HVM_PARAM_CALLBACK_TYPE_VECTOR 2
		/*
		* val[7:0] is a vector number. Check for XENFEAT_hvm_callback_vector to know
		* if this delivery method is available.
		*/
		#elif defined(__arm__) \|\| defined(__aarch64__)
		#define HVM_PARAM_CALLBACK_TYPE_PPI 2
		/*
		* val[55:16] needs to be zero.
		* val[15:8] is interrupt flag of the PPI used by event-channel:
		* bit 8: the PPI is edge(1) or level(0) triggered
		* bit 9: the PPI is active low(1) or high(0)
		* val[7:0] is a PPI number used by event-channel.
		* This is only used by ARM/ARM64 and masking/eoi the interrupt associated to
		* the notification is handled by the interrupt controller.
		*/
		#endif

		#define HVM_PARAM_STORE_PFN 1
		#define HVM_PARAM_STORE_EVTCHN 2

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