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qtest/ahci: add halted dma test

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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
This commit is contained in:
John Snow 2015-05-22 14:13:43 -04:00
parent a606ce50c2
commit 189d1b6126
1 changed files with 60 additions and 0 deletions
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60
tests/ahci-test.c
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@ -1154,6 +1154,65 @@ static void test_migrate_dma(void)
g_free(tx);
}
/**
* 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.
*/
@ -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();