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authorShannon Zhao <shannon.zhao@linaro.org>2016-04-07 15:03:26 +0300
committerDavid Vrabel <david.vrabel@citrix.com>2016-07-06 12:34:44 +0300
commit383ff518a79fe3dcece579b9d30be77b219d10f8 (patch)
treec3f8bd4e8c9281d5207ef6cce8a88a7434b80b5e /include/xen/interface
parentb6f0bcc23fa9cb32752cbf263d4014a21f132f92 (diff)
downloadlinux-383ff518a79fe3dcece579b9d30be77b219d10f8.tar.xz
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>
Diffstat (limited to 'include/xen/interface')
-rw-r--r--include/xen/interface/hvm/params.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/xen/interface/hvm/params.h b/include/xen/interface/hvm/params.h
index 70ad20834e13..4d61fc58d99d 100644
--- a/include/xen/interface/hvm/params.h
+++ b/include/xen/interface/hvm/params.h
@@ -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