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authorRoman Kagan <rkagan@virtuozzo.com>2018-09-21 11:18:29 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2018-10-19 13:44:13 +0200
commit1ba5c3a95443a4c52baaf5339fda1b88c09f3203 (patch)
tree6d8a510f25c0b1cc353d3717afc80d3a09d6a2a0 /hw/misc
parent40dce4ee61c68395f6d463fae792f61b7c003bce (diff)
hyperv_testdev: refactor for better maintainability
Make hyperv_testdev slightly easier to follow and enhance in future. For that, put the hyperv sint routes (wrapped in a helper structure) on a linked list rather than a fixed-size array. Besides, this way HvSintRoute can be treated as an opaque structure, allowing for easier refactoring of the core Hyper-V SynIC code in followup pathches. Signed-off-by: Roman Kagan <rkagan@virtuozzo.com> Message-Id: <20180921081836.29230-2-rkagan@virtuozzo.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/misc')
-rw-r--r--hw/misc/hyperv_testdev.c116
1 files changed, 55 insertions, 61 deletions
diff --git a/hw/misc/hyperv_testdev.c b/hw/misc/hyperv_testdev.c
index 7549f470b1..915d74e177 100644
--- a/hw/misc/hyperv_testdev.c
+++ b/hw/misc/hyperv_testdev.c
@@ -12,6 +12,7 @@
*/
#include "qemu/osdep.h"
+#include "qemu/queue.h"
#include <linux/kvm.h>
#include "hw/hw.h"
#include "hw/qdev.h"
@@ -20,12 +21,17 @@
#include "target/i386/hyperv.h"
#include "kvm_i386.h"
-#define HV_TEST_DEV_MAX_SINT_ROUTES 64
+typedef struct TestSintRoute {
+ QLIST_ENTRY(TestSintRoute) le;
+ uint8_t vp_index;
+ uint8_t sint;
+ HvSintRoute *sint_route;
+} TestSintRoute;
struct HypervTestDev {
ISADevice parent_obj;
MemoryRegion sint_control;
- HvSintRoute *sint_route[HV_TEST_DEV_MAX_SINT_ROUTES];
+ QLIST_HEAD(, TestSintRoute) sint_routes;
};
typedef struct HypervTestDev HypervTestDev;
@@ -39,70 +45,56 @@ enum {
HV_TEST_DEV_SINT_ROUTE_SET_SINT
};
-static int alloc_sint_route_index(HypervTestDev *dev)
+static void sint_route_create(HypervTestDev *dev,
+ uint8_t vp_index, uint8_t sint)
{
- int i;
+ TestSintRoute *sint_route;
- for (i = 0; i < ARRAY_SIZE(dev->sint_route); i++) {
- if (dev->sint_route[i] == NULL) {
- return i;
- }
- }
- return -1;
-}
+ sint_route = g_new0(TestSintRoute, 1);
+ assert(sint_route);
-static void free_sint_route_index(HypervTestDev *dev, int i)
-{
- assert(i >= 0 && i < ARRAY_SIZE(dev->sint_route));
- dev->sint_route[i] = NULL;
+ sint_route->vp_index = vp_index;
+ sint_route->sint = sint;
+
+ sint_route->sint_route = kvm_hv_sint_route_create(vp_index, sint, NULL);
+ assert(sint_route->sint_route);
+
+ QLIST_INSERT_HEAD(&dev->sint_routes, sint_route, le);
}
-static int find_sint_route_index(HypervTestDev *dev, uint32_t vp_index,
- uint32_t sint)
+static TestSintRoute *sint_route_find(HypervTestDev *dev,
+ uint8_t vp_index, uint8_t sint)
{
- HvSintRoute *sint_route;
- int i;
+ TestSintRoute *sint_route;
- for (i = 0; i < ARRAY_SIZE(dev->sint_route); i++) {
- sint_route = dev->sint_route[i];
- if (sint_route && sint_route->vp_index == vp_index &&
- sint_route->sint == sint) {
- return i;
+ QLIST_FOREACH(sint_route, &dev->sint_routes, le) {
+ if (sint_route->vp_index == vp_index && sint_route->sint == sint) {
+ return sint_route;
}
}
- return -1;
+ assert(false);
+ return NULL;
}
-static void hv_synic_test_dev_control(HypervTestDev *dev, uint32_t ctl,
- uint32_t vp_index, uint32_t sint)
+static void sint_route_destroy(HypervTestDev *dev,
+ uint8_t vp_index, uint8_t sint)
{
- int i;
- HvSintRoute *sint_route;
+ TestSintRoute *sint_route;
- switch (ctl) {
- case HV_TEST_DEV_SINT_ROUTE_CREATE:
- i = alloc_sint_route_index(dev);
- assert(i >= 0);
- sint_route = kvm_hv_sint_route_create(vp_index, sint, NULL);
- assert(sint_route);
- dev->sint_route[i] = sint_route;
- break;
- case HV_TEST_DEV_SINT_ROUTE_DESTROY:
- i = find_sint_route_index(dev, vp_index, sint);
- assert(i >= 0);
- sint_route = dev->sint_route[i];
- kvm_hv_sint_route_destroy(sint_route);
- free_sint_route_index(dev, i);
- break;
- case HV_TEST_DEV_SINT_ROUTE_SET_SINT:
- i = find_sint_route_index(dev, vp_index, sint);
- assert(i >= 0);
- sint_route = dev->sint_route[i];
- kvm_hv_sint_route_set_sint(sint_route);
- break;
- default:
- break;
- }
+ sint_route = sint_route_find(dev, vp_index, sint);
+ QLIST_REMOVE(sint_route, le);
+ kvm_hv_sint_route_destroy(sint_route->sint_route);
+ g_free(sint_route);
+}
+
+static void sint_route_set_sint(HypervTestDev *dev,
+ uint8_t vp_index, uint8_t sint)
+{
+ TestSintRoute *sint_route;
+
+ sint_route = sint_route_find(dev, vp_index, sint);
+
+ kvm_hv_sint_route_set_sint(sint_route->sint_route);
}
static uint64_t hv_test_dev_read(void *opaque, hwaddr addr, unsigned size)
@@ -114,18 +106,20 @@ static void hv_test_dev_write(void *opaque, hwaddr addr, uint64_t data,
uint32_t len)
{
HypervTestDev *dev = HYPERV_TEST_DEV(opaque);
- uint8_t ctl;
+ uint8_t sint = data & 0xFF;
+ uint8_t vp_index = (data >> 8ULL) & 0xFF;
+ uint8_t ctl = (data >> 16ULL) & 0xFF;
- ctl = (data >> 16ULL) & 0xFF;
switch (ctl) {
case HV_TEST_DEV_SINT_ROUTE_CREATE:
+ sint_route_create(dev, vp_index, sint);
+ break;
case HV_TEST_DEV_SINT_ROUTE_DESTROY:
- case HV_TEST_DEV_SINT_ROUTE_SET_SINT: {
- uint8_t sint = data & 0xFF;
- uint8_t vp_index = (data >> 8ULL) & 0xFF;
- hv_synic_test_dev_control(dev, ctl, vp_index, sint);
+ sint_route_destroy(dev, vp_index, sint);
+ break;
+ case HV_TEST_DEV_SINT_ROUTE_SET_SINT:
+ sint_route_set_sint(dev, vp_index, sint);
break;
- }
default:
break;
}
@@ -145,7 +139,7 @@ static void hv_test_dev_realizefn(DeviceState *d, Error **errp)
HypervTestDev *dev = HYPERV_TEST_DEV(d);
MemoryRegion *io = isa_address_space_io(isa);
- memset(dev->sint_route, 0, sizeof(dev->sint_route));
+ QLIST_INIT(&dev->sint_routes);
memory_region_init_io(&dev->sint_control, OBJECT(dev),
&synic_test_sint_ops, dev,
"hyperv-testdev-ctl", 4);