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qtest/ahci: Add DMA test variants 

These test a few different pathways in the AHCI code.

short:  Test the minimum transfer size, exactly one sector.
simple: Test a transfer using a single PRD, in this case, 4K.
double: Test transferring 8K, which we will split up as two PRDs.
long:   Test transferring a lot of data using many PRDs, 256K.
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1424905602-24715-5-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
John Snow 2015-02-25 18:06:38 -05:00 committed by Kevin Wolf
parent f9f963e0fb
commit d6c403edc7
1 changed files with 28 additions and 6 deletions
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34
tests/ahci-test.c
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@ -731,12 +731,11 @@ static void ahci_test_identify(AHCIQState *ahci)
g_assert_cmphex(sect_size, ==, 0x200);
}
static void ahci_test_dma_rw_simple(AHCIQState *ahci)
static void ahci_test_dma_rw_simple(AHCIQState *ahci, unsigned bufsize)
{
uint64_t ptr;
uint8_t port;
unsigned i;
const unsigned bufsize = 4096;
unsigned char *tx = g_malloc(bufsize);
unsigned char *rx = g_malloc0(bufsize);
@ -751,7 +750,7 @@ static void ahci_test_dma_rw_simple(AHCIQState *ahci)
ptr = ahci_alloc(ahci, bufsize);
g_assert(ptr);
/* Write some indicative pattern to our 4K buffer. */
/* Write some indicative pattern to our buffer. */
for (i = 0; i < bufsize; i++) {
tx[i] = (bufsize - i);
}
@ -852,17 +851,37 @@ static void test_identify(void)
}
/**
* Perform a simple DMA R/W test, using a single PRD and non-NCQ commands.
* Perform a simple DMA R/W test using non-NCQ commands.
*/
static void test_dma_rw_simple(void)
static void test_dma_rw_interface(unsigned bufsize)
{
AHCIQState *ahci;
ahci = ahci_boot_and_enable();
ahci_test_dma_rw_simple(ahci);
ahci_test_dma_rw_simple(ahci, bufsize);
ahci_shutdown(ahci);
}
static void test_dma_rw_simple(void)
{
test_dma_rw_interface(4096);
}
static void test_dma_rw_double(void)
{
test_dma_rw_interface(8192);
}
static void test_dma_rw_long(void)
{
test_dma_rw_interface(4096 * 64);
}
static void test_dma_rw_short(void)
{
test_dma_rw_interface(512);
}
/******************************************************************************/
int main(int argc, char **argv)
@ -919,6 +938,9 @@ int main(int argc, char **argv)
qtest_add_func("/ahci/hba_enable", test_hba_enable);
qtest_add_func("/ahci/identify", test_identify);
qtest_add_func("/ahci/dma/simple", test_dma_rw_simple);
qtest_add_func("/ahci/dma/double", test_dma_rw_double);
qtest_add_func("/ahci/dma/long", test_dma_rw_long);
qtest_add_func("/ahci/dma/short", test_dma_rw_short);
ret = g_test_run();