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[Qemu-devel] [PATCH 1/3] apic: Added helper function apic_match_dest, ap
From: |
James Sullivan |
Subject: |
[Qemu-devel] [PATCH 1/3] apic: Added helper function apic_match_dest, apic_match_[physical, logical]_dest |
Date: |
Mon, 23 Mar 2015 17:21:21 -0600 |
Added three helper functions apic_match_dest(),
apic_match_physical_dest(), and apic_match_logical_dest() which
can be used to determine if a logical or physical APIC ID match a
given LAPIC under a given dest_mode. This does not account for shorthand.
Signed-off-by: James Sullivan <address@hidden>
---
hw/intc/apic.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/hw/intc/apic.c b/hw/intc/apic.c
index 0f97b47..a5b5990 100644
--- a/hw/intc/apic.c
+++ b/hw/intc/apic.c
@@ -217,6 +217,32 @@ static void apic_external_nmi(APICCommonState *s)
}\
}
+static bool apic_match_physical_dest(struct APICCommonState *apic, uint8_t
dest)
+{
+ return (dest == 0xff || apic->id == dest);
+}
+
+static bool apic_match_logical_dest(struct APICCommonState *apic, uint8_t dest)
+{
+ if (apic->dest_mode == 0xf) {
+ return (dest & apic->log_dest) > 0;
+ } else if (apic->dest_mode == 0) {
+ return ((dest & 0xf0) == (apic->log_dest & 0xf0)) &&
+ (dest & apic->log_dest & 0x0f) > 0;
+ }
+ return false;
+}
+
+static bool apic_match_dest(struct APICCommonState *apic, uint8_t dest_mode,
+ uint8_t dest)
+{
+ if (dest_mode == 0) {
+ return apic_match_physical_dest(apic, dest);
+ } else {
+ return apic_match_logical_dest(apic, dest);
+ }
+}
+
static void apic_bus_deliver(const uint32_t *deliver_bitmask,
uint8_t delivery_mode, uint8_t vector_num,
uint8_t trigger_mode)
--
2.3.3