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xen/hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ 

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>
This commit is contained in:
Shannon Zhao 2016-04-07 20:03:26 +08:00 committed by David Vrabel
parent b6f0bcc23f
commit 383ff518a7
1 changed files with 13 additions and 0 deletions
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13
include/xen/interface/hvm/params.h
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@ -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