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authorJohn Snow <jsnow@redhat.com>2015-05-22 14:13:43 -0400
committerJohn Snow <jsnow@redhat.com>2015-05-22 15:58:22 -0400
commit189d1b6126625212fbb50ed3a30a3e9e7ba7ca37 (patch)
tree53168f4a5fa45e00851435b7faaa3faa5eb08aa0 /tests/ahci-test.c
parenta606ce50c29561b567995ab663cbb40067623e82 (diff)
qtest/ahci: add halted dma test
If we're going to test the migration of halted DMA jobs, we should probably check to make sure we can resume them locally as a first step. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-id: 1430417242-11859-9-git-send-email-jsnow@redhat.com
Diffstat (limited to 'tests/ahci-test.c')
-rw-r--r--tests/ahci-test.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/tests/ahci-test.c b/tests/ahci-test.c
index f6de355fb7..4eb110508b 100644
--- a/tests/ahci-test.c
+++ b/tests/ahci-test.c
@@ -1155,6 +1155,65 @@ static void test_migrate_dma(void)
}
/**
+ * DMA Error Test
+ *
+ * Simulate an error on first write, Try to write a pattern,
+ * Confirm the VM has stopped, resume the VM, verify command
+ * has completed, then read back the data and verify.
+ */
+static void test_halted_dma(void)
+{
+ AHCIQState *ahci;
+ uint8_t port;
+ size_t bufsize = 4096;
+ unsigned char *tx = g_malloc(bufsize);
+ unsigned char *rx = g_malloc0(bufsize);
+ unsigned i;
+ uint64_t ptr;
+ AHCICommand *cmd;
+
+ prepare_blkdebug_script(debug_path, "write_aio");
+
+ ahci = ahci_boot_and_enable("-drive file=blkdebug:%s:%s,if=none,id=drive0,"
+ "format=qcow2,cache=writeback,"
+ "rerror=stop,werror=stop "
+ "-M q35 "
+ "-device ide-hd,drive=drive0 ",
+ debug_path,
+ tmp_path);
+
+ /* Initialize and prepare */
+ port = ahci_port_select(ahci);
+ ahci_port_clear(ahci, port);
+
+ for (i = 0; i < bufsize; i++) {
+ tx[i] = (bufsize - i);
+ }
+
+ /* create DMA source buffer and write pattern */
+ ptr = ahci_alloc(ahci, bufsize);
+ g_assert(ptr);
+ memwrite(ptr, tx, bufsize);
+
+ /* Attempt to write (and fail) */
+ cmd = ahci_guest_io_halt(ahci, port, CMD_WRITE_DMA,
+ ptr, bufsize, 0);
+
+ /* Attempt to resume the command */
+ ahci_guest_io_resume(ahci, cmd);
+ ahci_free(ahci, ptr);
+
+ /* Read back and verify */
+ ahci_io(ahci, port, CMD_READ_DMA, rx, bufsize, 0);
+ g_assert_cmphex(memcmp(tx, rx, bufsize), ==, 0);
+
+ /* Cleanup and go home */
+ ahci_shutdown(ahci);
+ g_free(rx);
+ g_free(tx);
+}
+
+/**
* Migration test: Try to flush, migrate, then resume.
*/
static void test_flush_migrate(void)
@@ -1455,6 +1514,7 @@ int main(int argc, char **argv)
qtest_add_func("/ahci/migrate/sanity", test_migrate_sanity);
qtest_add_func("/ahci/migrate/dma", test_migrate_dma);
+ qtest_add_func("/ahci/io/dma/lba28/retry", test_halted_dma);
ret = g_test_run();