This test maps LPIs (populates the device table, the collection table,
interrupt translation tables, configuration table), migrates and make
sure the translation is correct on the destination.
Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>
---
v4 -> v5:
- move stub from header to arm/gic.c
v3 -> v4:
- assert in its_get_device/collection if the id is not found
---
arm/gic.c | 59 ++++++++++++++++++++++++++++++++++----
arm/unittests.cfg | 8 ++++++
lib/arm64/asm/gic-v3-its.h | 3 ++
lib/arm64/gic-v3-its.c | 22 ++++++++++++++
4 files changed, 86 insertions(+), 6 deletions(-)
diff --git a/arm/gic.c b/arm/gic.c
index 32b709e..b8fbc13 100644
--- a/arm/gic.c
+++ b/arm/gic.c
@@ -590,6 +590,7 @@ static void gic_test_mmio(void)
static void test_its_introspection(void) {}
static void test_its_trigger(void) {}
+static void test_its_migration(void) {}
#else /* __aarch64__ */
@@ -658,13 +659,19 @@ static int its_prerequisites(int nb_cpus)
return 0;
}
-static void test_its_trigger(void)
+/*
+ * Setup the configuration for those mappings:
+ * dev_id=2 event=20 -> vcpu 3, intid=8195
+ * dev_id=7 event=255 -> vcpu 2, intid=8196
+ * LPIs ready to hit
+ */
+static int its_setup1(void)
{
struct its_collection *col3, *col2;
struct its_device *dev2, *dev7;
if (its_prerequisites(4))
- return;
+ return -1;
dev2 = its_create_device(2 /* dev id */, 8 /* nb_ites */);
dev7 = its_create_device(7 /* dev id */, 8 /* nb_ites */);
@@ -678,14 +685,10 @@ static void test_its_trigger(void)
its_send_invall(col2);
its_send_invall(col3);
- report_prefix_push("int");
/*
* dev=2, eventid=20 -> lpi= 8195, col=3
* dev=7, eventid=255 -> lpi= 8196, col=2
- * Trigger dev2, eventid=20 and dev7, eventid=255
- * Check both LPIs hit
*/
-
its_send_mapd(dev2, true);
its_send_mapd(dev7, true);
@@ -694,6 +697,23 @@ static void test_its_trigger(void)
its_send_mapti(dev2, 8195 /* lpi id */, 20 /* event id */, col3);
its_send_mapti(dev7, 8196 /* lpi id */, 255 /* event id */, col2);
+ return 0;
+}
+
+static void test_its_trigger(void)
+{
+ struct its_collection *col3, *col2;
+ struct its_device *dev2, *dev7;
+
+ if (its_setup1())
+ return;
+
+ col3 = its_get_collection(3);
+ col2 = its_get_collection(2);
+ dev2 = its_get_device(2);
+ dev7 = its_get_device(7);
+
+ report_prefix_push("int");
lpi_stats_expect(3, 8195);
its_send_int(dev2, 20);
@@ -756,6 +776,29 @@ static void test_its_trigger(void)
check_lpi_stats("no LPI after collection unmap");
report_prefix_pop();
}
+
+static void test_its_migration(void)
+{
+ struct its_device *dev2, *dev7;
+
+ if (its_setup1())
+ return;
+
+ dev2 = its_get_device(2);
+ dev7 = its_get_device(7);
+
+ puts("Now migrate the VM, then press a key to continue...\n");
+ (void)getchar();
+ report_info("Migration complete");
+
+ lpi_stats_expect(3, 8195);
+ its_send_int(dev2, 20);
+ check_lpi_stats("dev2/eventid=20 triggers LPI 8195 en PE #3 after migration");
+
+ lpi_stats_expect(2, 8196);
+ its_send_int(dev7, 255);
+ check_lpi_stats("dev7/eventid=255 triggers LPI 8196 on PE #2 after migration");
+}
#endif
int main(int argc, char **argv)
@@ -793,6 +836,10 @@ int main(int argc, char **argv)
report_prefix_push(argv[1]);
test_its_trigger();
report_prefix_pop();
+ } else if (!strcmp(argv[1], "its-migration")) {
+ report_prefix_push(argv[1]);
+ test_its_migration();
+ report_prefix_pop();
} else if (strcmp(argv[1], "its-introspection") == 0) {
report_prefix_push(argv[1]);
test_its_introspection();
diff --git a/arm/unittests.cfg b/arm/unittests.cfg
index b9a7a2c..480adec 100644
--- a/arm/unittests.cfg
+++ b/arm/unittests.cfg
@@ -136,6 +136,14 @@ extra_params = -machine gic-version=3 -append 'its-trigger'
groups = its
arch = arm64
+[its-migration]
+file = gic.flat
+smp = $MAX_SMP
+accel = kvm
+extra_params = -machine gic-version=3 -append 'its-migration'
+groups = its migration
+arch = arm64
+
# Test PSCI emulation
[psci]
file = psci.flat
diff --git a/lib/arm64/asm/gic-v3-its.h b/lib/arm64/asm/gic-v3-its.h
index 889d6ce..e9f89c1 100644
--- a/lib/arm64/asm/gic-v3-its.h
+++ b/lib/arm64/asm/gic-v3-its.h
@@ -166,4 +166,7 @@ extern void __its_send_sync(struct its_collection *col, bool verbose);
#define its_send_movi_nv(dev, col, id) __its_send_movi(dev, col, id, false)
#define its_send_sync_nv(col) __its_send_sync(col, false)
+extern struct its_device *its_get_device(u32 id);
+extern struct its_collection *its_get_collection(u32 id);
+
#endif /* _ASMARM64_GIC_V3_ITS_H_ */
diff --git a/lib/arm64/gic-v3-its.c b/lib/arm64/gic-v3-its.c
index 442dcf0..9c9fa60 100644
--- a/lib/arm64/gic-v3-its.c
+++ b/lib/arm64/gic-v3-its.c
@@ -148,3 +148,25 @@ struct its_collection *its_create_collection(u32 col_id, u32 pe)
its_data.nr_collections++;
return new;
}
+
+struct its_device *its_get_device(u32 id)
+{
+ int i;
+
+ for (i = 0; i < GITS_MAX_DEVICES; i++) {
+ if (its_data.devices[i].device_id == id)
+ return &its_data.devices[i];
+ }
+ assert(0);
+}
+
+struct its_collection *its_get_collection(u32 id)
+{
+ int i;
+
+ for (i = 0; i < GITS_MAX_COLLECTIONS; i++) {
+ if (its_data.collections[i].col_id == id)
+ return &its_data.collections[i];
+ }
+ assert(0);
+}
--
2.20.1
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