[Qemu-devel] [PULL 60/73] tests: Use qpci_mem{read, write} in ivshmem-test

[David Gibson <david@gibson.dropbear.id.au>]

ivshmem implements a block of shared memory in a PCI BAR.  Currently our
test case accesses this using qtest_mem{read,write}.  However, deducing
the correct addresses for these requires making assumptions about the
internel format returned by qpci_iomap(), along with some ugly casts.

This patch changes the test to use the new qpci_mem{read,write} interfaces
which is neater.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
---
 tests/ivshmem-test.c | 35 +++++++++++++++++++++++++++--------
 1 file changed, 27 insertions(+), 8 deletions(-)

diff --git a/tests/ivshmem-test.c b/tests/ivshmem-test.c
index f36bfe7..fbd8258 100644
--- a/tests/ivshmem-test.c
+++ b/tests/ivshmem-test.c
@@ -93,6 +93,25 @@ static inline void out_reg(IVState *s, enum Reg reg, unsigned v)
     global_qtest = qtest;
 }
 
+static inline void read_mem(IVState *s, uint64_t off, void *buf, size_t len)
+{
+    QTestState *qtest = global_qtest;
+
+    global_qtest = s->qtest;
+    qpci_memread(s->dev, s->mem_base + off, buf, len);
+    global_qtest = qtest;
+}
+
+static inline void write_mem(IVState *s, uint64_t off,
+                             const void *buf, size_t len)
+{
+    QTestState *qtest = global_qtest;
+
+    global_qtest = s->qtest;
+    qpci_memwrite(s->dev, s->mem_base + off, buf, len);
+    global_qtest = qtest;
+}
+
 static void cleanup_vm(IVState *s)
 {
     g_free(s->dev);
@@ -169,7 +188,7 @@ static void test_ivshmem_single(void)
     for (i = 0; i < G_N_ELEMENTS(data); i++) {
         data[i] = i;
     }
-    qtest_memwrite(s->qtest, (uintptr_t)s->mem_base, data, sizeof(data));
+    write_mem(s, 0, data, sizeof(data));
 
     /* verify write */
     for (i = 0; i < G_N_ELEMENTS(data); i++) {
@@ -178,7 +197,7 @@ static void test_ivshmem_single(void)
 
     /* read it back and verify read */
     memset(data, 0, sizeof(data));
-    qtest_memread(s->qtest, (uintptr_t)s->mem_base, data, sizeof(data));
+    read_mem(s, 0, data, sizeof(data));
     for (i = 0; i < G_N_ELEMENTS(data); i++) {
         g_assert_cmpuint(data[i], ==, i);
     }
@@ -201,29 +220,29 @@ static void test_ivshmem_pair(void)
 
     /* host write, guest 1 & 2 read */
     memset(tmpshmem, 0x42, TMPSHMSIZE);
-    qtest_memread(s1->qtest, (uintptr_t)s1->mem_base, data, TMPSHMSIZE);
+    read_mem(s1, 0, data, TMPSHMSIZE);
     for (i = 0; i < TMPSHMSIZE; i++) {
         g_assert_cmpuint(data[i], ==, 0x42);
     }
-    qtest_memread(s2->qtest, (uintptr_t)s2->mem_base, data, TMPSHMSIZE);
+    read_mem(s2, 0, data, TMPSHMSIZE);
     for (i = 0; i < TMPSHMSIZE; i++) {
         g_assert_cmpuint(data[i], ==, 0x42);
     }
 
     /* guest 1 write, guest 2 read */
     memset(data, 0x43, TMPSHMSIZE);
-    qtest_memwrite(s1->qtest, (uintptr_t)s1->mem_base, data, TMPSHMSIZE);
+    write_mem(s1, 0, data, TMPSHMSIZE);
     memset(data, 0, TMPSHMSIZE);
-    qtest_memread(s2->qtest, (uintptr_t)s2->mem_base, data, TMPSHMSIZE);
+    read_mem(s2, 0, data, TMPSHMSIZE);
     for (i = 0; i < TMPSHMSIZE; i++) {
         g_assert_cmpuint(data[i], ==, 0x43);
     }
 
     /* guest 2 write, guest 1 read */
     memset(data, 0x44, TMPSHMSIZE);
-    qtest_memwrite(s2->qtest, (uintptr_t)s2->mem_base, data, TMPSHMSIZE);
+    write_mem(s2, 0, data, TMPSHMSIZE);
     memset(data, 0, TMPSHMSIZE);
-    qtest_memread(s1->qtest, (uintptr_t)s2->mem_base, data, TMPSHMSIZE);
+    read_mem(s1, 0, data, TMPSHMSIZE);
     for (i = 0; i < TMPSHMSIZE; i++) {
         g_assert_cmpuint(data[i], ==, 0x44);
     }
-- 
2.7.4