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qtest/ide-test: Test short and long PRDTs

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This tests the behaviour of the DMA engine when the given PRDT contains
physical region descriptors for either more or less bytes than the
IDE request is for.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2013-03-13 13:30:24 +01:00
parent b95739dcf5
commit 948eaed171
1 changed files with 54 additions and 0 deletions
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54
tests/ide-test.c
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@ -77,6 +77,8 @@ enum {
CMD_READ_DMA = 0xc8,
CMD_WRITE_DMA = 0xca,
CMD_IDENTIFY = 0xec,
CMDF_ABORT = 0x100,
};
enum {
@ -170,9 +172,13 @@ static int send_dma_request(int cmd, uint64_t sector, int nb_sectors,
size_t len;
bool from_dev;
uint8_t status;
int flags;
dev = get_pci_device(&bmdma_base);
flags = cmd & ~0xff;
cmd &= 0xff;
switch (cmd) {
case CMD_READ_DMA:
from_dev = true;
@ -209,6 +215,10 @@ static int send_dma_request(int cmd, uint64_t sector, int nb_sectors,
/* Start DMA transfer */
outb(bmdma_base + bmreg_cmd, BM_CMD_START | (from_dev ? BM_CMD_WRITE : 0));
if (flags & CMDF_ABORT) {
outb(bmdma_base + bmreg_cmd, 0);
}
/* Wait for the DMA transfer to complete */
do {
status = inb(bmdma_base + bmreg_status);
@ -289,6 +299,48 @@ static void test_bmdma_simple_rw(void)
g_free(cmpbuf);
}
static void test_bmdma_short_prdt(void)
{
uint8_t status;
PrdtEntry prdt[] = {
{ .addr = 0, .size = 0x10 | PRDT_EOT },
};
/* Normal request */
status = send_dma_request(CMD_READ_DMA, 0, 1,
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, 1,
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;
PrdtEntry prdt[] = {
{ .addr = 0, .size = 0x1000 | PRDT_EOT },
};
/* Normal request */
status = send_dma_request(CMD_READ_DMA, 0, 1,
prdt, ARRAY_SIZE(prdt));
g_assert_cmphex(status, ==, BM_STS_ACTIVE | BM_STS_INTR);
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, 1,
prdt, ARRAY_SIZE(prdt));
g_assert_cmphex(status, ==, BM_STS_INTR);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
}
static void test_bmdma_setup(void)
{
ide_test_start(
@ -375,6 +427,8 @@ 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/long_prdt", test_bmdma_long_prdt);
qtest_add_func("/ide/bmdma/teardown", test_bmdma_teardown);
ret = g_test_run();