| Message ID | 1458913735-2678-20-git-send-email-shannon.zhao@linaro.org |
|---|---|
| State | New |
| Headers | show |
Hi Shannon, On 25/03/16 13:48, Shannon Zhao wrote: > 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). > > Cc: Ian Jackson <ian.jackson@eu.citrix.com> > Cc: Jan Beulich <jbeulich@suse.com> > Cc: Keir Fraser <keir@xen.org> > Cc: Tim Deegan <tim@xen.org> > Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> Reviewed-by: Julien Grall <julien.grall@arm.com> Regards,
diff --git a/xen/include/public/hvm/params.h b/xen/include/public/hvm/params.h index e69c72c..f7338a3 100644 --- a/xen/include/public/hvm/params.h +++ b/xen/include/public/hvm/params.h @@ -49,11 +49,24 @@ * 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 /* * These are not used by Xen. They are here for convenience of HVM-guest
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). Cc: Ian Jackson <ian.jackson@eu.citrix.com> Cc: Jan Beulich <jbeulich@suse.com> Cc: Keir Fraser <keir@xen.org> Cc: Tim Deegan <tim@xen.org> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> --- xen/include/public/hvm/params.h | 13 +++++++++++++ 1 file changed, 13 insertions(+)