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qtest/ide: add another short PRDT test flavor 

The existing short PRDT test case does not transfer any data because the
first PRD is less than 1 sector.

This patch adds another short PRDT test case where the first sector can
be read but the PRDT is still smaller than the requested number of
sectors.  This exercises a different code path in ide_dma_cb().

Cc: John Snow <jsnow@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 1435770571-9906-1-git-send-email-stefanha@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2015-07-20 12:21:18 -04:00 committed by John Snow
parent dcc8a3ab63
commit 5873281023
1 changed files with 27 additions and 0 deletions
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27
tests/ide-test.c
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@ -339,6 +339,31 @@ static void test_bmdma_short_prdt(void)
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
}
static void test_bmdma_one_sector_short_prdt(void)
{
uint8_t status;
/* Read 2 sectors but only give 1 sector in PRDT */
PrdtEntry prdt[] = {
{
.addr = 0,
.size = cpu_to_le32(0x200 | PRDT_EOT),
},
};
/* Normal request */
status = send_dma_request(CMD_READ_DMA, 0, 2,
prdt, ARRAY_SIZE(prdt));
g_assert_cmphex(status, ==, 0);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
/* Abort the request before it completes */
status = send_dma_request(CMD_READ_DMA | CMDF_ABORT, 0, 2,
prdt, ARRAY_SIZE(prdt));
g_assert_cmphex(status, ==, 0);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
}
static void test_bmdma_long_prdt(void)
{
uint8_t status;
@ -592,6 +617,8 @@ int main(int argc, char **argv)
qtest_add_func("/ide/bmdma/setup", test_bmdma_setup);
qtest_add_func("/ide/bmdma/simple_rw", test_bmdma_simple_rw);
qtest_add_func("/ide/bmdma/short_prdt", test_bmdma_short_prdt);
qtest_add_func("/ide/bmdma/one_sector_short_prdt",
test_bmdma_one_sector_short_prdt);
qtest_add_func("/ide/bmdma/long_prdt", test_bmdma_long_prdt);
qtest_add_func("/ide/bmdma/no_busmaster", test_bmdma_no_busmaster);
qtest_add_func("/ide/bmdma/teardown", test_bmdma_teardown);