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Commit 5adab6cc authored by Mika Westerberg's avatar Mika Westerberg
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thunderbolt: Add KUnit tests for DMA tunnels 

Add a couple of tests to check DMA tunneling functionality.
Signed-off-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
parent 15a4c7e8
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drivers/thunderbolt/test.c
View file @ 5adab6cc
......@@ -119,6 +119,7 @@ static struct tb_switch *alloc_host(struct kunit *test)
sw->ports[7].config.type = TB_TYPE_NHI;
sw->ports[7].config.max_in_hop_id = 11;
sw->ports[7].config.max_out_hop_id = 11;
sw->ports[7].config.nfc_credits = 0x41800000;
sw->ports[8].config.type = TB_TYPE_PCIE_DOWN;
sw->ports[8].config.max_in_hop_id = 8;
......@@ -1594,6 +1595,240 @@ static void tb_test_tunnel_port_on_path(struct kunit *test)
tb_tunnel_free(dp_tunnel);
}
static void tb_test_tunnel_dma(struct kunit *test)
{
struct tb_port *nhi, *port;
struct tb_tunnel *tunnel;
struct tb_switch *host;
/*
* Create DMA tunnel from NHI to port 1 and back.
*
* [Host 1]
* 1 ^ In HopID 1 -> Out HopID 8
* |
* v In HopID 8 -> Out HopID 1
* ............ Domain border
* |
* [Host 2]
*/
host = alloc_host(test);
nhi = &host->ports[7];
port = &host->ports[1];
tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 8, 1, 8, 1);
KUNIT_ASSERT_TRUE(test, tunnel != NULL);
KUNIT_EXPECT_EQ(test, tunnel->type, (enum tb_tunnel_type)TB_TUNNEL_DMA);
KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, nhi);
KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, port);
KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)2);
/* RX path */
KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 1);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, port);
KUNIT_EXPECT_EQ(test, tunnel->paths[0]->hops[0].in_hop_index, 8);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].out_port, nhi);
KUNIT_EXPECT_EQ(test, tunnel->paths[0]->hops[0].next_hop_index, 1);
/* TX path */
KUNIT_ASSERT_EQ(test, tunnel->paths[1]->path_length, 1);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].in_port, nhi);
KUNIT_EXPECT_EQ(test, tunnel->paths[1]->hops[0].in_hop_index, 1);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].out_port, port);
KUNIT_EXPECT_EQ(test, tunnel->paths[1]->hops[0].next_hop_index, 8);
tb_tunnel_free(tunnel);
}
static void tb_test_tunnel_dma_rx(struct kunit *test)
{
struct tb_port *nhi, *port;
struct tb_tunnel *tunnel;
struct tb_switch *host;
/*
* Create DMA RX tunnel from port 1 to NHI.
*
* [Host 1]
* 1 ^
* |
* | In HopID 15 -> Out HopID 2
* ............ Domain border
* |
* [Host 2]
*/
host = alloc_host(test);
nhi = &host->ports[7];
port = &host->ports[1];
tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, -1, -1, 15, 2);
KUNIT_ASSERT_TRUE(test, tunnel != NULL);
KUNIT_EXPECT_EQ(test, tunnel->type, (enum tb_tunnel_type)TB_TUNNEL_DMA);
KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, nhi);
KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, port);
KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)1);
/* RX path */
KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 1);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, port);
KUNIT_EXPECT_EQ(test, tunnel->paths[0]->hops[0].in_hop_index, 15);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].out_port, nhi);
KUNIT_EXPECT_EQ(test, tunnel->paths[0]->hops[0].next_hop_index, 2);
tb_tunnel_free(tunnel);
}
static void tb_test_tunnel_dma_tx(struct kunit *test)
{
struct tb_port *nhi, *port;
struct tb_tunnel *tunnel;
struct tb_switch *host;
/*
* Create DMA TX tunnel from NHI to port 1.
*
* [Host 1]
* 1 | In HopID 2 -> Out HopID 15
* |
* v
* ............ Domain border
* |
* [Host 2]
*/
host = alloc_host(test);
nhi = &host->ports[7];
port = &host->ports[1];
tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 15, 2, -1, -1);
KUNIT_ASSERT_TRUE(test, tunnel != NULL);
KUNIT_EXPECT_EQ(test, tunnel->type, (enum tb_tunnel_type)TB_TUNNEL_DMA);
KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, nhi);
KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, port);
KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)1);
/* TX path */
KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 1);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, nhi);
KUNIT_EXPECT_EQ(test, tunnel->paths[0]->hops[0].in_hop_index, 2);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].out_port, port);
KUNIT_EXPECT_EQ(test, tunnel->paths[0]->hops[0].next_hop_index, 15);
tb_tunnel_free(tunnel);
}
static void tb_test_tunnel_dma_chain(struct kunit *test)
{
struct tb_switch *host, *dev1, *dev2;
struct tb_port *nhi, *port;
struct tb_tunnel *tunnel;
/*
* Create DMA tunnel from NHI to Device #2 port 3 and back.
*
* [Host 1]
* 1 ^ In HopID 1 -> Out HopID x
* |
* 1 | In HopID x -> Out HopID 1
* [Device #1]
* 7 \
* 1 \
* [Device #2]
* 3 | In HopID x -> Out HopID 8
* |
* v In HopID 8 -> Out HopID x
* ............ Domain border
* |
* [Host 2]
*/
host = alloc_host(test);
dev1 = alloc_dev_default(test, host, 0x1, true);
dev2 = alloc_dev_default(test, dev1, 0x701, true);
nhi = &host->ports[7];
port = &dev2->ports[3];
tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 8, 1, 8, 1);
KUNIT_ASSERT_TRUE(test, tunnel != NULL);
KUNIT_EXPECT_EQ(test, tunnel->type, (enum tb_tunnel_type)TB_TUNNEL_DMA);
KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, nhi);
KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, port);
KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)2);
/* RX path */
KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 3);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, port);
KUNIT_EXPECT_EQ(test, tunnel->paths[0]->hops[0].in_hop_index, 8);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].out_port,
&dev2->ports[1]);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[1].in_port,
&dev1->ports[7]);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[1].out_port,
&dev1->ports[1]);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[2].in_port,
&host->ports[1]);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[2].out_port, nhi);
KUNIT_EXPECT_EQ(test, tunnel->paths[0]->hops[2].next_hop_index, 1);
/* TX path */
KUNIT_ASSERT_EQ(test, tunnel->paths[1]->path_length, 3);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].in_port, nhi);
KUNIT_EXPECT_EQ(test, tunnel->paths[1]->hops[0].in_hop_index, 1);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[1].in_port,
&dev1->ports[1]);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[1].out_port,
&dev1->ports[7]);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[2].in_port,
&dev2->ports[1]);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[2].out_port, port);
KUNIT_EXPECT_EQ(test, tunnel->paths[1]->hops[2].next_hop_index, 8);
tb_tunnel_free(tunnel);
}
static void tb_test_tunnel_dma_match(struct kunit *test)
{
struct tb_port *nhi, *port;
struct tb_tunnel *tunnel;
struct tb_switch *host;
host = alloc_host(test);
nhi = &host->ports[7];
port = &host->ports[1];
tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 15, 1, 15, 1);
KUNIT_ASSERT_TRUE(test, tunnel != NULL);
KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, 15, 1, 15, 1));
KUNIT_ASSERT_FALSE(test, tb_tunnel_match_dma(tunnel, 8, 1, 15, 1));
KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, 15, 1));
KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, 15, 1, -1, -1));
KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, 15, -1, -1, -1));
KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, 1, -1, -1));
KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, 15, -1));
KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, -1, 1));
KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, -1, -1));
KUNIT_ASSERT_FALSE(test, tb_tunnel_match_dma(tunnel, 8, -1, 8, -1));
tb_tunnel_free(tunnel);
tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 15, 1, -1, -1);
KUNIT_ASSERT_TRUE(test, tunnel != NULL);
KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, 15, 1, -1, -1));
KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, 15, -1, -1, -1));
KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, 1, -1, -1));
KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, -1, -1));
KUNIT_ASSERT_FALSE(test, tb_tunnel_match_dma(tunnel, 15, 1, 15, 1));
KUNIT_ASSERT_FALSE(test, tb_tunnel_match_dma(tunnel, -1, -1, 15, 1));
KUNIT_ASSERT_FALSE(test, tb_tunnel_match_dma(tunnel, 15, 11, -1, -1));
tb_tunnel_free(tunnel);
tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, -1, -1, 15, 11);
KUNIT_ASSERT_TRUE(test, tunnel != NULL);
KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, 15, 11));
KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, 15, -1));
KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, -1, 11));
KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, -1, -1));
KUNIT_ASSERT_FALSE(test, tb_tunnel_match_dma(tunnel, -1, -1, 15, 1));
KUNIT_ASSERT_FALSE(test, tb_tunnel_match_dma(tunnel, -1, -1, 10, 11));
KUNIT_ASSERT_FALSE(test, tb_tunnel_match_dma(tunnel, 15, 11, -1, -1));
tb_tunnel_free(tunnel);
}
static const u32 root_directory[] = {
0x55584401, /* "UXD" v1 */
0x00000018, /* Root directory length */
......@@ -1865,6 +2100,11 @@ static struct kunit_case tb_test_cases[] = {
KUNIT_CASE(tb_test_tunnel_dp_max_length),
KUNIT_CASE(tb_test_tunnel_port_on_path),
KUNIT_CASE(tb_test_tunnel_usb3),
KUNIT_CASE(tb_test_tunnel_dma),
KUNIT_CASE(tb_test_tunnel_dma_rx),
KUNIT_CASE(tb_test_tunnel_dma_tx),
KUNIT_CASE(tb_test_tunnel_dma_chain),
KUNIT_CASE(tb_test_tunnel_dma_match),
KUNIT_CASE(tb_test_property_parse),
KUNIT_CASE(tb_test_property_format),
KUNIT_CASE(tb_test_property_copy),
......
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