// SPDX-License-Identifier: GPL-2.0
/*
* KUnit tests
*
* Copyright (C) 2020, Intel Corporation
* Author: Mika Westerberg <mika.westerberg@linux.intel.com>
*/
#include <kunit/test.h>
#include <linux/idr.h>
#include "tb.h"
#include "tunnel.h"
static int __ida_init(struct kunit_resource *res, void *context)
{
struct ida *ida = context;
ida_init(ida);
res->data = ida;
return 0;
}
static void __ida_destroy(struct kunit_resource *res)
{
struct ida *ida = res->data;
ida_destroy(ida);
}
static void kunit_ida_init(struct kunit *test, struct ida *ida)
{
kunit_alloc_resource(test, __ida_init, __ida_destroy, GFP_KERNEL, ida);
}
static struct tb_switch *alloc_switch(struct kunit *test, u64 route,
u8 upstream_port, u8 max_port_number)
{
struct tb_switch *sw;
size_t size;
int i;
sw = kunit_kzalloc(test, sizeof(*sw), GFP_KERNEL);
if (!sw)
return NULL;
sw->config.upstream_port_number = upstream_port;
sw->config.depth = tb_route_length(route);
sw->config.route_hi = upper_32_bits(route);
sw->config.route_lo = lower_32_bits(route);
sw->config.enabled = 0;
sw->config.max_port_number = max_port_number;
size = (sw->config.max_port_number + 1) * sizeof(*sw->ports);
sw->ports = kunit_kzalloc(test, size, GFP_KERNEL);
if (!sw->ports)
return NULL;
for (i = 0; i <= sw->config.max_port_number; i++) {
sw->ports[i].sw = sw;
sw->ports[i].port = i;
sw->ports[i].config.port_number = i;
if (i) {
kunit_ida_init(test, &sw->ports[i].in_hopids);
kunit_ida_init(test, &sw->ports[i].out_hopids);
}
}
return sw;
}
static struct tb_switch *alloc_host(struct kunit *test)
{
struct tb_switch *sw;
sw = alloc_switch(test, 0, 7, 13);
if (!sw)
return NULL;
sw->config.vendor_id = 0x8086;
sw->config.device_id = 0x9a1b;
sw->ports[0].config.type = TB_TYPE_PORT;
sw->ports[0].config.max_in_hop_id = 7;
sw->ports[0].config.max_out_hop_id = 7;
sw->ports[1].config.type = TB_TYPE_PORT;
sw->ports[1].config.max_in_hop_id = 19;
sw->ports[1].config.max_out_hop_id = 19;
sw->ports[1].total_credits = 60;
sw->ports[1].ctl_credits = 2;
sw->ports[1].dual_link_port = &sw->ports[2];
sw->ports[2].config.type = TB_TYPE_PORT;
sw->ports[2].config.max_in_hop_id = 19;
sw->ports[2].config.max_out_hop_id = 19;
sw->ports[2].total_credits = 60;
sw->ports[2].ctl_credits = 2;
sw->ports[2].dual_link_port = &sw->ports[1];
sw->ports[2].link_nr = 1;
sw->ports[3].config.type = TB_TYPE_PORT;
sw->ports[3].config.max_in_hop_id = 19;
sw->ports[3].config.max_out_hop_id = 19;
sw->ports[3].total_credits = 60;
sw->ports[3].ctl_credits = 2;
sw->ports[3].dual_link_port = &sw->ports[4];
sw->ports[4].config.type = TB_TYPE_PORT;
sw->ports[4].config.max_in_hop_id = 19;
sw->ports[4].config.max_out_hop_id = 19;
sw->ports[4].total_credits = 60;
sw->ports[4].ctl_credits = 2;
sw->ports[4].dual_link_port = &sw->ports[3];
sw->ports[4].link_nr = 1;
sw->ports[5].config.type = TB_TYPE_DP_HDMI_IN;
sw->ports[5].config.max_in_hop_id = 9;
sw->ports[5].config.max_out_hop_id = 9;
sw->ports[5].cap_adap = -1;
sw->ports[6].config.type = TB_TYPE_DP_HDMI_IN;
sw->ports[6].config.max_in_hop_id = 9;
sw->ports[6].config.max_out_hop_id = 9;
sw->ports[6].cap_adap = -1;
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;
sw->ports[8].config.max_out_hop_id = 8;
sw->ports[9].config.type = TB_TYPE_PCIE_DOWN;
sw->ports[9].config.max_in_hop_id = 8;
sw->ports[9].config.max_out_hop_id = 8;
sw->ports[10].disabled = true;
sw->ports[11].disabled = true;
sw->ports[12].config.type = TB_TYPE_USB3_DOWN;
sw->ports[12].config.max_in_hop_id = 8;
sw->ports[12].config.max_out_hop_id = 8;
sw->ports[13].config.type = TB_TYPE_USB3_DOWN;
sw->ports[13].config.max_in_hop_id = 8;
sw->ports[13].config.max_out_hop_id = 8;
return sw;
}
static struct tb_switch *alloc_host_usb4(struct kunit *test)
{
struct tb_switch *sw;
sw = alloc_host(test);
if (!sw)
return NULL;
sw->generation = 4;
sw->credit_allocation = true;
sw->max_usb3_credits = 32;
sw->min_dp_aux_credits = 1;
sw->min_dp_main_credits = 0;
sw->max_pcie_credits = 64;
sw->max_dma_credits = 14;
return sw;
}
static struct tb_switch *alloc_host_br(struct kunit *test)
{
struct tb_switch *sw;
sw = alloc_host_usb4(test);
if (!sw)
return NULL;
sw->ports[10].config.type = TB_TYPE_DP_HDMI_IN;
sw->ports[10].config.max_in_hop_id = 9;
sw->ports[10].config.max_out_hop_id = 9;
sw->ports[10].cap_adap = -1;
sw->ports[10].disabled = false;
return sw;
}
static struct tb_switch *alloc_dev_default(struct kunit *test,
struct tb_switch *parent,
u64 route, bool bonded)
{
struct tb_port *port, *upstream_port;
struct tb_switch *sw;
sw = alloc_switch(test, route, 1, 19);
if (!sw)
return NULL;
sw->config.vendor_id = 0x8086;
sw->config.device_id = 0x15ef;
sw->ports[0].config.type = TB_TYPE_PORT;
sw->ports[0].config.max_in_hop_id = 8;
sw->ports[0].config.max_out_hop_id = 8;
sw->ports[1].config.type = TB_TYPE_PORT;
sw->ports[1].config.max_in_hop_id = 19;
sw->ports[1].config.max_out_hop_id = 19;
sw->ports[1].total_credits = 60;
sw->ports[1].ctl_credits = 2;
sw->ports[1].dual_link_port = &sw->ports[2];
sw->ports[2].config.type = TB_TYPE_PORT;
sw->ports[2].config.max_in_hop_id = 19;
sw->ports[2].config.max_out_hop_id = 19;
sw->ports[2].total_credits = 60;
sw->ports[2].ctl_credits = 2;
sw->ports[2].dual_link_port = &sw->ports[1];
sw->ports[2].link_nr = 1;
sw->ports[3].config.type = TB_TYPE_PORT;
sw->ports[3].config.max_in_hop_id = 19;
sw->ports[3].config.max_out_hop_id = 19;
sw->ports[3].total_credits = 60;
sw->ports[3].ctl_credits = 2;
sw->ports[3].dual_link_port = &sw->ports[4];
sw->ports[4].config.type = TB_TYPE_PORT;
sw->ports[4].config.max_in_hop_id = 19;
sw->ports[4].config.max_out_hop_id = 19;
sw->ports[4].total_credits = 60;
sw->ports[4].ctl_credits = 2;
sw->ports[4].dual_link_port = &sw->ports[3];
sw->ports[4].link_nr = 1;
sw->ports[5].config.type = TB_TYPE_PORT;
sw->ports[5].config.max_in_hop_id = 19;
sw->ports[5].config.max_out_hop_id = 19;
sw->ports[5].total_credits = 60;
sw->ports[5].ctl_credits = 2;
sw->ports[5].dual_link_port = &sw->ports[6];
sw->ports[6].config.type = TB_TYPE_PORT;
sw->ports[6].config.max_in_hop_id = 19;
sw->ports[6].config.max_out_hop_id = 19;
sw->ports[6].total_credits = 60;
sw->ports[6].ctl_credits = 2;
sw->ports[6].dual_link_port = &sw->ports[5];
sw->ports[6].link_nr = 1;
sw->ports[7].config.type = TB_TYPE_PORT;
sw->ports[7].config.max_in_hop_id = 19;
sw->ports[7].config.max_out_hop_id = 19;
sw->ports[7].total_credits = 60;
sw->ports[7].ctl_credits = 2;
sw->ports[7].dual_link_port = &sw->ports[8];
sw->ports[8].config.type = TB_TYPE_PORT;
sw->ports[8].config.max_in_hop_id = 19;
sw->ports[8].config.max_out_hop_id = 19;
sw->ports[8].total_credits = 60;
sw->ports[8].ctl_credits = 2;
sw->ports[8].dual_link_port = &sw->ports[7];
sw->ports[8].link_nr = 1;
sw->ports[9].config.type = TB_TYPE_PCIE_UP;
sw->ports[9].config.max_in_hop_id = 8;
sw->ports[9].config.max_out_hop_id = 8;
sw->ports[10].config.type = TB_TYPE_PCIE_DOWN;
sw->ports[10].config.max_in_hop_id = 8;
sw->ports[10].config.max_out_hop_id = 8;
sw->ports[11].config.type = TB_TYPE_PCIE_DOWN;
sw->ports[11].config.max_in_hop_id = 8;
sw->ports[11].config.max_out_hop_id = 8;
sw->ports[12].config.type = TB_TYPE_PCIE_DOWN;
sw->ports[12].config.max_in_hop_id = 8;
sw->ports[12].config.max_out_hop_id = 8;
sw->ports[13].config.type = TB_TYPE_DP_HDMI_OUT;
sw->ports[13].config.max_in_hop_id = 9;
sw->ports[13].config.max_out_hop_id = 9;
sw->ports[13].cap_adap = -1;
sw->ports[14].config.type = TB_TYPE_DP_HDMI_OUT;
sw->ports[14].config.max_in_hop_id = 9;
sw->ports[14].config.max_out_hop_id = 9;
sw->ports[14].cap_adap = -1;
sw->ports[15].disabled = true;
sw->ports[16].config.type = TB_TYPE_USB3_UP;
sw->ports[16].config.max_in_hop_id = 8;
sw->ports[16].config.max_out_hop_id = 8;
sw->ports[17].config.type = TB_TYPE_USB3_DOWN;
sw->ports[17].config.max_in_hop_id = 8;
sw->ports[17].config.max_out_hop_id = 8;
sw->ports[18].config.type = TB_TYPE_USB3_DOWN;
sw->ports[18].config.max_in_hop_id = 8;
sw->ports[18].config.max_out_hop_id = 8;
sw->ports[19].config.type = TB_TYPE_USB3_DOWN;
sw->ports[19].config.max_in_hop_id = 8;
sw->ports[19].config.max_out_hop_id = 8;
if (!parent)
return sw;
/* Link them */
upstream_port = tb_upstream_port(sw);
port = tb_port_at(route, parent);
port->remote = upstream_port;
upstream_port->remote = port;
if (port->dual_link_port && upstream_port->dual_link_port) {
port->dual_link_port->remote = upstream_port->dual_link_port;
upstream_port->dual_link_port->remote = port->dual_link_port;
if (bonded) {
/* Bonding is used */
port->bonded = true;
port->total_credits *= 2;
port->dual_link_port->bonded = true;
port->dual_link_port->total_credits = 0;
upstream_port->bonded = true;
upstream_port->total_credits *= 2;
upstream_port->dual_link_port->bonded = true;
upstream_port->dual_link_port->total_credits = 0;
}
}
return sw;
}
static struct tb_switch *alloc_dev_with_dpin(struct kunit *test,
struct tb_switch *parent,
u64 route, bool bonded)
{
struct tb_switch *sw;
sw = alloc_dev_default(test, parent, route, bonded);
if (!sw)
return NULL;
sw->ports[13].config.type = TB_TYPE_DP_HDMI_IN;
sw->ports[13].config.max_in_hop_id = 9;
sw->ports[13].config.max_out_hop_id = 9;
sw->ports[14].config.type = TB_TYPE_DP_HDMI_IN;
sw->ports[14].config.max_in_hop_id = 9;
sw->ports[14].config.max_out_hop_id = 9;
return sw;
}
static struct tb_switch *alloc_dev_without_dp(struct kunit *test,
struct tb_switch *parent,
u64 route, bool bonded)
{
struct tb_switch *sw;
int i;
sw = alloc_dev_default(test, parent, route, bonded);
if (!sw)
return NULL;
/*
* Device with:
* 2x USB4 Adapters (adapters 1,2 and 3,4),
* 1x PCIe Upstream (adapter 9),
* 1x PCIe Downstream (adapter 10),
* 1x USB3 Upstream (adapter 16),
* 1x USB3 Downstream (adapter 17)
*/
for (i = 5; i <= 8; i++)
sw->ports[i].disabled = true;
for (i = 11; i <= 14; i++)
sw->ports[i].disabled = true;
sw->ports[13].cap_adap = 0;
sw->ports[14].cap_adap = 0;
for (i = 18; i <= 19; i++)
sw->ports[i].disabled = true;
sw->generation = 4;
sw->credit_allocation = true;
sw->max_usb3_credits = 109;
sw->min_dp_aux_credits = 0;
sw->min_dp_main_credits = 0;
sw->max_pcie_credits = 30;
sw->max_dma_credits = 1;
return sw;
}
static struct tb_switch *alloc_dev_usb4(struct kunit *test,
struct tb_switch *parent,
u64 route, bool bonded)
{
struct tb_switch *sw;
sw = alloc_dev_default(test, parent, route, bonded);
if (!sw)
return NULL;
sw->generation = 4;
sw->credit_allocation = true;
sw->max_usb3_credits = 14;
sw->min_dp_aux_credits = 1;
sw->min_dp_main_credits = 18;
sw->max_pcie_credits = 32;
sw->max_dma_credits = 14;
return sw;
}
static void tb_test_path_basic(struct kunit *test)
{
struct tb_port *src_port, *dst_port, *p;
struct tb_switch *host;
host = alloc_host(test);
src_port = &host->ports[5];
dst_port = src_port;
p = tb_next_port_on_path(src_port, dst_port, NULL);
KUNIT_EXPECT_PTR_EQ(test, p, dst_port);
p = tb_next_port_on_path(src_port, dst_port, p);
KUNIT_EXPECT_TRUE(test, !p);
}
static void tb_test_path_not_connected_walk(struct kunit *test)
{
struct tb_port *src_port, *dst_port, *p;
struct tb_switch *host, *dev;
host = alloc_host(test);
/* No connection between host and dev */
dev = alloc_dev_default(test, NULL, 3, true);
src_port = &host->ports[12];
dst_port = &dev->ports[16];
p = tb_next_port_on_path(src_port, dst_port, NULL);
KUNIT_EXPECT_PTR_EQ(test, p, src_port);
p = tb_next_port_on_path(src_port, dst_port, p);
KUNIT_EXPECT_PTR_EQ(test, p, &host->ports[3]);
p = tb_next_port_on_path(src_port, dst_port, p);
KUNIT_EXPECT_TRUE(test, !p);
/* Other direction */
p = tb_next_port_on_path(dst_port, src_port, NULL);
KUNIT_EXPECT_PTR_EQ(test, p, dst_port);
p = tb_next_port_on_path(dst_port, src_port, p);
KUNIT_EXPECT_PTR_EQ(test, p, &dev->ports[1]);
p = tb_next_port_on_path(dst_port, src_port, p);
KUNIT_EXPECT_TRUE(test, !p);
}
struct port_expectation {
u64 route;
u8 port;
enum tb_port_type type;
};
static void tb_test_path_single_hop_walk(struct kunit *test)
{
/*
* Walks from Host PCIe downstream port to Device #1 PCIe
* upstream port.
*
* [Host]
* 1 |
* 1 |
* [Device]
*/
static const struct port_expectation test_data[] = {
{ .route = 0x0, .port = 8, .type = TB_TYPE_PCIE_DOWN },
{ .route = 0x0, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x1, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x1, .port = 9, .type = TB_TYPE_PCIE_UP },
};
struct tb_port *src_port, *dst_port, *p;
struct tb_switch *host, *dev;
int i;
host = alloc_host(test);
dev = alloc_dev_default(test, host, 1, true);
src_port = &host->ports[8];
dst_port = &dev->ports[9];
/* Walk both directions */
i = 0;
tb_for_each_port_on_path(src_port, dst_port, p) {
KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data));
KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, p->port, test_data[i].port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type,
test_data[i].type);
i++;
}
KUNIT_EXPECT_EQ(test, i, ARRAY_SIZE(test_data));
i = ARRAY_SIZE(test_data) - 1;
tb_for_each_port_on_path(dst_port, src_port, p) {
KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data));
KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, p->port, test_data[i].port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type,
test_data[i].type);
i--;
}
KUNIT_EXPECT_EQ(test, i, -1);
}
static void tb_test_path_daisy_chain_walk(struct kunit *test)
{
/*
* Walks from Host DP IN to Device #2 DP OUT.
*
* [Host]
* 1 |
* 1 |
* [Device #1]
* 3 /
* 1 /
* [Device #2]
*/
static const struct port_expectation test_data[] = {
{ .route = 0x0, .port = 5, .type = TB_TYPE_DP_HDMI_IN },
{ .route = 0x0, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x1, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x1, .port = 3, .type = TB_TYPE_PORT },
{ .route = 0x301, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x301, .port = 13, .type = TB_TYPE_DP_HDMI_OUT },
};
struct tb_port *src_port, *dst_port, *p;
struct tb_switch *host, *dev1, *dev2;
int i;
host = alloc_host(test);
dev1 = alloc_dev_default(test, host, 0x1, true);
dev2 = alloc_dev_default(test, dev1, 0x301, true);
src_port = &host->ports[5];
dst_port = &dev2->ports[13];
/* Walk both directions */
i = 0;
tb_for_each_port_on_path(src_port, dst_port, p) {
KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data));
KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, p->port, test_data[i].port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type,
test_data[i].type);
i++;
}
KUNIT_EXPECT_EQ(test, i, ARRAY_SIZE(test_data));
i = ARRAY_SIZE(test_data) - 1;
tb_for_each_port_on_path(dst_port, src_port, p) {
KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data));
KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, p->port, test_data[i].port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type,
test_data[i].type);
i--;
}
KUNIT_EXPECT_EQ(test, i, -1);
}
static void tb_test_path_simple_tree_walk(struct kunit *test)
{
/*
* Walks from Host DP IN to Device #3 DP OUT.
*
* [Host]
* 1 |
* 1 |
* [Device #1]
* 3 / | 5 \ 7
* 1 / | \ 1
* [Device #2] | [Device #4]
* | 1
* [Device #3]
*/
static const struct port_expectation test_data[] = {
{ .route = 0x0, .port = 5, .type = TB_TYPE_DP_HDMI_IN },
{ .route = 0x0, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x1, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x1, .port = 5, .type = TB_TYPE_PORT },
{ .route = 0x501, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x501, .port = 13, .type = TB_TYPE_DP_HDMI_OUT },
};
struct tb_port *src_port, *dst_port, *p;
struct tb_switch *host, *dev1, *dev3;
int i;
host = alloc_host(test);
dev1 = alloc_dev_default(test, host, 0x1, true);
alloc_dev_default(test, dev1, 0x301, true);
dev3 = alloc_dev_default(test, dev1, 0x501, true);
alloc_dev_default(test, dev1, 0x701, true);
src_port = &host->ports[5];
dst_port = &dev3->ports[13];
/* Walk both directions */
i = 0;
tb_for_each_port_on_path(src_port, dst_port, p) {
KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data));
KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, p->port, test_data[i].port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type,
test_data[i].type);
i++;
}
KUNIT_EXPECT_EQ(test, i, ARRAY_SIZE(test_data));
i = ARRAY_SIZE(test_data) - 1;
tb_for_each_port_on_path(dst_port, src_port, p) {
KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data));
KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, p->port, test_data[i].port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type,
test_data[i].type);
i--;
}
KUNIT_EXPECT_EQ(test, i, -1);
}
static void tb_test_path_complex_tree_walk(struct kunit *test)
{
/*
* Walks from Device #3 DP IN to Device #9 DP OUT.
*
* [Host]
* 1 |
* 1 |
* [Device #1]
* 3 / | 5 \ 7
* 1 / | \ 1
* [Device #2] | [Device #5]
* 5 | | 1 \ 7
* 1 | [Device #4] \ 1
* [Device #3] [Device #6]
* 3 /
* 1 /
* [Device #7]
* 3 / | 5
* 1 / |
* [Device #8] | 1
* [Device #9]
*/
static const struct port_expectation test_data[] = {
{ .route = 0x50301, .port = 13, .type = TB_TYPE_DP_HDMI_IN },
{ .route = 0x50301, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x301, .port = 5, .type = TB_TYPE_PORT },
{ .route = 0x301, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x1, .port = 3, .type = TB_TYPE_PORT },
{ .route = 0x1, .port = 7, .type = TB_TYPE_PORT },
{ .route = 0x701, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x701, .port = 7, .type = TB_TYPE_PORT },
{ .route = 0x70701, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x70701, .port = 3, .type = TB_TYPE_PORT },
{ .route = 0x3070701, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x3070701, .port = 5, .type = TB_TYPE_PORT },
{ .route = 0x503070701, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x503070701, .port = 14, .type = TB_TYPE_DP_HDMI_OUT },
};
struct tb_switch *host, *dev1, *dev2, *dev3, *dev5, *dev6, *dev7, *dev9;
struct tb_port *src_port, *dst_port, *p;
int i;
host = alloc_host(test);
dev1 = alloc_dev_default(test, host, 0x1, true);
dev2 = alloc_dev_default(test, dev1, 0x301, true);
dev3 = alloc_dev_with_dpin(test, dev2, 0x50301, true);
alloc_dev_default(test, dev1, 0x501, true);
dev5 = alloc_dev_default(test, dev1, 0x701, true);
dev6 = alloc_dev_default(test, dev5, 0x70701, true);
dev7 = alloc_dev_default(test, dev6, 0x3070701, true);
alloc_dev_default(test, dev7, 0x303070701, true);
dev9 = alloc_dev_default(test, dev7, 0x503070701, true);
src_port = &dev3->ports[13];
dst_port = &dev9->ports[14];
/* Walk both directions */
i = 0;
tb_for_each_port_on_path(src_port, dst_port, p) {
KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data));
KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, p->port, test_data[i].port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type,
test_data[i].type);
i++;
}
KUNIT_EXPECT_EQ(test, i, ARRAY_SIZE(test_data));
i = ARRAY_SIZE(test_data) - 1;
tb_for_each_port_on_path(dst_port, src_port, p) {
KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data));
KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, p->port, test_data[i].port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type,
test_data[i].type);
i--;
}
KUNIT_EXPECT_EQ(test, i, -1);
}
static void tb_test_path_max_length_walk(struct kunit *test)
{
struct tb_switch *host, *dev1, *dev2, *dev3, *dev4, *dev5, *dev6;
struct tb_switch *dev7, *dev8, *dev9, *dev10, *dev11, *dev12;
struct tb_port *src_port, *dst_port, *p;
int i;
/*
* Walks from Device #6 DP IN to Device #12 DP OUT.
*
* [Host]
* 1 / \ 3
* 1 / \ 1
* [Device #1] [Device #7]
* 3 | | 3
* 1 | | 1
* [Device #2] [Device #8]
* 3 | | 3
* 1 | | 1
* [Device #3] [Device #9]
* 3 | | 3
* 1 | | 1
* [Device #4] [Device #10]
* 3 | | 3
* 1 | | 1
* [Device #5] [Device #11]
* 3 | | 3
* 1 | | 1
* [Device #6] [Device #12]
*/
static const struct port_expectation test_data[] = {
{ .route = 0x30303030301, .port = 13, .type = TB_TYPE_DP_HDMI_IN },
{ .route = 0x30303030301, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x303030301, .port = 3, .type = TB_TYPE_PORT },
{ .route = 0x303030301, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x3030301, .port = 3, .type = TB_TYPE_PORT },
{ .route = 0x3030301, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x30301, .port = 3, .type = TB_TYPE_PORT },
{ .route = 0x30301, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x301, .port = 3, .type = TB_TYPE_PORT },
{ .route = 0x301, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x1, .port = 3, .type = TB_TYPE_PORT },
{ .route = 0x1, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x0, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x0, .port = 3, .type = TB_TYPE_PORT },
{ .route = 0x3, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x3, .port = 3, .type = TB_TYPE_PORT },
{ .route = 0x303, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x303, .port = 3, .type = TB_TYPE_PORT },
{ .route = 0x30303, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x30303, .port = 3, .type = TB_TYPE_PORT },
{ .route = 0x3030303, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x3030303, .port = 3, .type = TB_TYPE_PORT },
{ .route = 0x303030303, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x303030303, .port = 3, .type = TB_TYPE_PORT },
{ .route = 0x30303030303, .port = 1, .type = TB_TYPE_PORT },
{ .route = 0x30303030303, .port = 13, .type = TB_TYPE_DP_HDMI_OUT },
};
host = alloc_host(test);
dev1 = alloc_dev_default(test, host, 0x1, true);
dev2 = alloc_dev_default(test, dev1, 0x301, true);
dev3 = alloc_dev_default(test, dev2, 0x30301, true);
dev4 = alloc_dev_default(test, dev3, 0x3030301, true);
dev5 = alloc_dev_default(test, dev4, 0x303030301, true);
dev6 = alloc_dev_with_dpin(test, dev5, 0x30303030301, true);
dev7 = alloc_dev_default(test, host, 0x3, true);
dev8 = alloc_dev_default(test, dev7, 0x303, true);
dev9 = alloc_dev_default(test, dev8, 0x30303, true);
dev10 = alloc_dev_default(test, dev9, 0x3030303, true);
dev11 = alloc_dev_default(test, dev10, 0x303030303, true);
dev12 = alloc_dev_default(test, dev11, 0x30303030303, true);
src_port = &dev6->ports[13];
dst_port = &dev12->ports[13];
/* Walk both directions */
i = 0;
tb_for_each_port_on_path(src_port, dst_port, p) {
KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data));
KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, p->port, test_data[i].port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type,
test_data[i].type);
i++;
}
KUNIT_EXPECT_EQ(test, i, ARRAY_SIZE(test_data));
i = ARRAY_SIZE(test_data) - 1;
tb_for_each_port_on_path(dst_port, src_port, p) {
KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data));
KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, p->port, test_data[i].port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type,
test_data[i].type);
i--;
}
KUNIT_EXPECT_EQ(test, i, -1);
}
static void tb_test_path_not_connected(struct kunit *test)
{
struct tb_switch *host, *dev1, *dev2;
struct tb_port *down, *up;
struct tb_path *path;
host = alloc_host(test);
dev1 = alloc_dev_default(test, host, 0x3, false);
/* Not connected to anything */
dev2 = alloc_dev_default(test, NULL, 0x303, false);
down = &dev1->ports[10];
up = &dev2->ports[9];
path = tb_path_alloc(NULL, down, 8, up, 8, 0, "PCIe Down");
KUNIT_ASSERT_NULL(test, path);
path = tb_path_alloc(NULL, down, 8, up, 8, 1, "PCIe Down");
KUNIT_ASSERT_NULL(test, path);
}
struct hop_expectation {
u64 route;
u8 in_port;
enum tb_port_type in_type;
u8 out_port;
enum tb_port_type out_type;
};
static void tb_test_path_not_bonded_lane0(struct kunit *test)
{
/*
* PCIe path from host to device using lane 0.
*
* [Host]
* 3 |: 4
* 1 |: 2
* [Device]
*/
static const struct hop_expectation test_data[] = {
{
.route = 0x0,
.in_port = 9,
.in_type = TB_TYPE_PCIE_DOWN,
.out_port = 3,
.out_type = TB_TYPE_PORT,
},
{
.route = 0x3,
.in_port = 1,
.in_type = TB_TYPE_PORT,
.out_port = 9,
.out_type = TB_TYPE_PCIE_UP,
},
};
struct tb_switch *host, *dev;
struct tb_port *down, *up;
struct tb_path *path;
int i;
host = alloc_host(test);
dev = alloc_dev_default(test, host, 0x3, false);
down = &host->ports[9];
up = &dev->ports[9];
path = tb_path_alloc(NULL, down, 8, up, 8, 0, "PCIe Down");
KUNIT_ASSERT_NOT_NULL(test, path);
KUNIT_ASSERT_EQ(test, path->path_length, ARRAY_SIZE(test_data));
for (i = 0; i < ARRAY_SIZE(test_data); i++) {
const struct tb_port *in_port, *out_port;
in_port = path->hops[i].in_port;
out_port = path->hops[i].out_port;
KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type,
test_data[i].in_type);
KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type,
test_data[i].out_type);
}
tb_path_free(path);
}
static void tb_test_path_not_bonded_lane1(struct kunit *test)
{
/*
* DP Video path from host to device using lane 1. Paths like
* these are only used with Thunderbolt 1 devices where lane
* bonding is not possible. USB4 specifically does not allow
* paths like this (you either use lane 0 where lane 1 is
* disabled or both lanes are bonded).
*
* [Host]
* 1 :| 2
* 1 :| 2
* [Device]
*/
static const struct hop_expectation test_data[] = {
{
.route = 0x0,
.in_port = 5,
.in_type = TB_TYPE_DP_HDMI_IN,
.out_port = 2,
.out_type = TB_TYPE_PORT,
},
{
.route = 0x1,
.in_port = 2,
.in_type = TB_TYPE_PORT,
.out_port = 13,
.out_type = TB_TYPE_DP_HDMI_OUT,
},
};
struct tb_switch *host, *dev;
struct tb_port *in, *out;
struct tb_path *path;
int i;
host = alloc_host(test);
dev = alloc_dev_default(test, host, 0x1, false);
in = &host->ports[5];
out = &dev->ports[13];
path = tb_path_alloc(NULL, in, 9, out, 9, 1, "Video");
KUNIT_ASSERT_NOT_NULL(test, path);
KUNIT_ASSERT_EQ(test, path->path_length, ARRAY_SIZE(test_data));
for (i = 0; i < ARRAY_SIZE(test_data); i++) {
const struct tb_port *in_port, *out_port;
in_port = path->hops[i].in_port;
out_port = path->hops[i].out_port;
KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type,
test_data[i].in_type);
KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type,
test_data[i].out_type);
}
tb_path_free(path);
}
static void tb_test_path_not_bonded_lane1_chain(struct kunit *test)
{
/*
* DP Video path from host to device 3 using lane 1.
*
* [Host]
* 1 :| 2
* 1 :| 2
* [Device #1]
* 7 :| 8
* 1 :| 2
* [Device #2]
* 5 :| 6
* 1 :| 2
* [Device #3]
*/
static const struct hop_expectation test_data[] = {
{
.route = 0x0,
.in_port = 5,
.in_type = TB_TYPE_DP_HDMI_IN,
.out_port = 2,
.out_type = TB_TYPE_PORT,
},
{
.route = 0x1,
.in_port = 2,
.in_type = TB_TYPE_PORT,
.out_port = 8,
.out_type = TB_TYPE_PORT,
},
{
.route = 0x701,
.in_port = 2,
.in_type = TB_TYPE_PORT,
.out_port = 6,
.out_type = TB_TYPE_PORT,
},
{
.route = 0x50701,
.in_port = 2,
.in_type = TB_TYPE_PORT,
.out_port = 13,
.out_type = TB_TYPE_DP_HDMI_OUT,
},
};
struct tb_switch *host, *dev1, *dev2, *dev3;
struct tb_port *in, *out;
struct tb_path *path;
int i;
host = alloc_host(test);
dev1 = alloc_dev_default(test, host, 0x1, false);
dev2 = alloc_dev_default(test, dev1, 0x701, false);
dev3 = alloc_dev_default(test, dev2, 0x50701, false);
in = &host->ports[5];
out = &dev3->ports[13];
path = tb_path_alloc(NULL, in, 9, out, 9, 1, "Video");
KUNIT_ASSERT_NOT_NULL(test, path);
KUNIT_ASSERT_EQ(test, path->path_length, ARRAY_SIZE(test_data));
for (i = 0; i < ARRAY_SIZE(test_data); i++) {
const struct tb_port *in_port, *out_port;
in_port = path->hops[i].in_port;
out_port = path->hops[i].out_port;
KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type,
test_data[i].in_type);
KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type,
test_data[i].out_type);
}
tb_path_free(path);
}
static void tb_test_path_not_bonded_lane1_chain_reverse(struct kunit *test)
{
/*
* DP Video path from device 3 to host using lane 1.
*
* [Host]
* 1 :| 2
* 1 :| 2
* [Device #1]
* 7 :| 8
* 1 :| 2
* [Device #2]
* 5 :| 6
* 1 :| 2
* [Device #3]
*/
static const struct hop_expectation test_data[] = {
{
.route = 0x50701,
.in_port = 13,
.in_type = TB_TYPE_DP_HDMI_IN,
.out_port = 2,
.out_type = TB_TYPE_PORT,
},
{
.route = 0x701,
.in_port = 6,
.in_type = TB_TYPE_PORT,
.out_port = 2,
.out_type = TB_TYPE_PORT,
},
{
.route = 0x1,
.in_port = 8,
.in_type = TB_TYPE_PORT,
.out_port = 2,
.out_type = TB_TYPE_PORT,
},
{
.route = 0x0,
.in_port = 2,
.in_type = TB_TYPE_PORT,
.out_port = 5,
.out_type = TB_TYPE_DP_HDMI_IN,
},
};
struct tb_switch *host, *dev1, *dev2, *dev3;
struct tb_port *in, *out;
struct tb_path *path;
int i;
host = alloc_host(test);
dev1 = alloc_dev_default(test, host, 0x1, false);
dev2 = alloc_dev_default(test, dev1, 0x701, false);
dev3 = alloc_dev_with_dpin(test, dev2, 0x50701, false);
in = &dev3->ports[13];
out = &host->ports[5];
path = tb_path_alloc(NULL, in, 9, out, 9, 1, "Video");
KUNIT_ASSERT_NOT_NULL(test, path);
KUNIT_ASSERT_EQ(test, path->path_length, ARRAY_SIZE(test_data));
for (i = 0; i < ARRAY_SIZE(test_data); i++) {
const struct tb_port *in_port, *out_port;
in_port = path->hops[i].in_port;
out_port = path->hops[i].out_port;
KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type,
test_data[i].in_type);
KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type,
test_data[i].out_type);
}
tb_path_free(path);
}
static void tb_test_path_mixed_chain(struct kunit *test)
{
/*
* DP Video path from host to device 4 where first and last link
* is bonded.
*
* [Host]
* 1 |
* 1 |
* [Device #1]
* 7 :| 8
* 1 :| 2
* [Device #2]
* 5 :| 6
* 1 :| 2
* [Device #3]
* 3 |
* 1 |
* [Device #4]
*/
static const struct hop_expectation test_data[] = {
{
.route = 0x0,
.in_port = 5,
.in_type = TB_TYPE_DP_HDMI_IN,
.out_port = 1,
.out_type = TB_TYPE_PORT,
},
{
.route = 0x1,
.in_port = 1,
.in_type = TB_TYPE_PORT,
.out_port = 8,
.out_type = TB_TYPE_PORT,
},
{
.route = 0x701,
.in_port = 2,
.in_type = TB_TYPE_PORT,
.out_port = 6,
.out_type = TB_TYPE_PORT,
},
{
.route = 0x50701,
.in_port = 2,
.in_type = TB_TYPE_PORT,
.out_port = 3,
.out_type = TB_TYPE_PORT,
},
{
.route = 0x3050701,
.in_port = 1,
.in_type = TB_TYPE_PORT,
.out_port = 13,
.out_type = TB_TYPE_DP_HDMI_OUT,
},
};
struct tb_switch *host, *dev1, *dev2, *dev3, *dev4;
struct tb_port *in, *out;
struct tb_path *path;
int i;
host = alloc_host(test);
dev1 = alloc_dev_default(test, host, 0x1, true);
dev2 = alloc_dev_default(test, dev1, 0x701, false);
dev3 = alloc_dev_default(test, dev2, 0x50701, false);
dev4 = alloc_dev_default(test, dev3, 0x3050701, true);
in = &host->ports[5];
out = &dev4->ports[13];
path = tb_path_alloc(NULL, in, 9, out, 9, 1, "Video");
KUNIT_ASSERT_NOT_NULL(test, path);
KUNIT_ASSERT_EQ(test, path->path_length, ARRAY_SIZE(test_data));
for (i = 0; i < ARRAY_SIZE(test_data); i++) {
const struct tb_port *in_port, *out_port;
in_port = path->hops[i].in_port;
out_port = path->hops[i].out_port;
KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type,
test_data[i].in_type);
KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type,
test_data[i].out_type);
}
tb_path_free(path);
}
static void tb_test_path_mixed_chain_reverse(struct kunit *test)
{
/*
* DP Video path from device 4 to host where first and last link
* is bonded.
*
* [Host]
* 1 |
* 1 |
* [Device #1]
* 7 :| 8
* 1 :| 2
* [Device #2]
* 5 :| 6
* 1 :| 2
* [Device #3]
* 3 |
* 1 |
* [Device #4]
*/
static const struct hop_expectation test_data[] = {
{
.route = 0x3050701,
.in_port = 13,
.in_type = TB_TYPE_DP_HDMI_OUT,
.out_port = 1,
.out_type = TB_TYPE_PORT,
},
{
.route = 0x50701,
.in_port = 3,
.in_type = TB_TYPE_PORT,
.out_port = 2,
.out_type = TB_TYPE_PORT,
},
{
.route = 0x701,
.in_port = 6,
.in_type = TB_TYPE_PORT,
.out_port = 2,
.out_type = TB_TYPE_PORT,
},
{
.route = 0x1,
.in_port = 8,
.in_type = TB_TYPE_PORT,
.out_port = 1,
.out_type = TB_TYPE_PORT,
},
{
.route = 0x0,
.in_port = 1,
.in_type = TB_TYPE_PORT,
.out_port = 5,
.out_type = TB_TYPE_DP_HDMI_IN,
},
};
struct tb_switch *host, *dev1, *dev2, *dev3, *dev4;
struct tb_port *in, *out;
struct tb_path *path;
int i;
host = alloc_host(test);
dev1 = alloc_dev_default(test, host, 0x1, true);
dev2 = alloc_dev_default(test, dev1, 0x701, false);
dev3 = alloc_dev_default(test, dev2, 0x50701, false);
dev4 = alloc_dev_default(test, dev3, 0x3050701, true);
in = &dev4->ports[13];
out = &host->ports[5];
path = tb_path_alloc(NULL, in, 9, out, 9, 1, "Video");
KUNIT_ASSERT_NOT_NULL(test, path);
KUNIT_ASSERT_EQ(test, path->path_length, ARRAY_SIZE(test_data));
for (i = 0; i < ARRAY_SIZE(test_data); i++) {
const struct tb_port *in_port, *out_port;
in_port = path->hops[i].in_port;
out_port = path->hops[i].out_port;
KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type,
test_data[i].in_type);
KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route);
KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port);
KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type,
test_data[i].out_type);
}
tb_path_free(path);
}
static void tb_test_tunnel_pcie(struct kunit *test)
{
struct tb_switch *host, *dev1, *dev2;
struct tb_tunnel *tunnel1, *tunnel2;
struct tb_port *down, *up;
/*
* Create PCIe tunnel between host and two devices.
*
* [Host]
* 1 |
* 1 |
* [Device #1]
* 5 |
* 1 |
* [Device #2]
*/
host = alloc_host(test);
dev1 = alloc_dev_default(test, host, 0x1, true);
dev2 = alloc_dev_default(test, dev1, 0x501, true);
down = &host->ports[8];
up = &dev1->ports[9];
tunnel1 = tb_tunnel_alloc_pci(NULL, up, down);
KUNIT_ASSERT_NOT_NULL(test, tunnel1);
KUNIT_EXPECT_EQ(test, tunnel1->type, TB_TUNNEL_PCI);
KUNIT_EXPECT_PTR_EQ(test, tunnel1->src_port, down);
KUNIT_EXPECT_PTR_EQ(test, tunnel1->dst_port, up);
KUNIT_ASSERT_EQ(test, tunnel1->npaths, 2);
KUNIT_ASSERT_EQ(test, tunnel1->paths[0]->path_length, 2);
KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[0]->hops[0].in_port, down);
KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[0]->hops[1].out_port, up);
KUNIT_ASSERT_EQ(test, tunnel1->paths[1]->path_length, 2);
KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[1]->hops[0].in_port, up);
KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[1]->hops[1].out_port, down);
down = &dev1->ports[10];
up = &dev2->ports[9];
tunnel2 = tb_tunnel_alloc_pci(NULL, up, down);
KUNIT_ASSERT_NOT_NULL(test, tunnel2);
KUNIT_EXPECT_EQ(test, tunnel2->type, TB_TUNNEL_PCI);
KUNIT_EXPECT_PTR_EQ(test, tunnel2->src_port, down);
KUNIT_EXPECT_PTR_EQ(test, tunnel2->dst_port, up);
KUNIT_ASSERT_EQ(test, tunnel2->npaths, 2);
KUNIT_ASSERT_EQ(test, tunnel2->paths[0]->path_length, 2);
KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[0]->hops[0].in_port, down);
KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[0]->hops[1].out_port, up);
KUNIT_ASSERT_EQ(test, tunnel2->paths[1]->path_length, 2);
KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[1]->hops[0].in_port, up);
KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[1]->hops[1].out_port, down);
tb_tunnel_free(tunnel2);
tb_tunnel_free(tunnel1);
}
static void tb_test_tunnel_dp(struct kunit *test)
{
struct tb_switch *host, *dev;
struct tb_port *in, *out;
struct tb_tunnel *tunnel;
/*
* Create DP tunnel between Host and Device
*
* [Host]
* 1 |
* 1 |
* [Device]
*/
host = alloc_host(test);
dev = alloc_dev_default(test, host, 0x3, true);
in = &host->ports[5];
out = &dev->ports[13];
tunnel = tb_tunnel_alloc_dp(NULL, in, out, 1, 0, 0);
KUNIT_ASSERT_NOT_NULL(test, tunnel);
KUNIT_EXPECT_EQ(test, tunnel->type, TB_TUNNEL_DP);
KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, in);
KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, out);
KUNIT_ASSERT_EQ(test, tunnel->npaths, 3);
KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 2);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, in);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[1].out_port, out);
KUNIT_ASSERT_EQ(test, tunnel->paths[1]->path_length, 2);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].in_port, in);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[1].out_port, out);
KUNIT_ASSERT_EQ(test, tunnel->paths[2]->path_length, 2);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[0].in_port, out);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[1].out_port, in);
tb_tunnel_free(tunnel);
}
static void tb_test_tunnel_dp_chain(struct kunit *test)
{
struct tb_switch *host, *dev1, *dev4;
struct tb_port *in, *out;
struct tb_tunnel *tunnel;
/*
* Create DP tunnel from Host DP IN to Device #4 DP OUT.
*
* [Host]
* 1 |
* 1 |
* [Device #1]
* 3 / | 5 \ 7
* 1 / | \ 1
* [Device #2] | [Device #4]
* | 1
* [Device #3]
*/
host = alloc_host(test);
dev1 = alloc_dev_default(test, host, 0x1, true);
alloc_dev_default(test, dev1, 0x301, true);
alloc_dev_default(test, dev1, 0x501, true);
dev4 = alloc_dev_default(test, dev1, 0x701, true);
in = &host->ports[5];
out = &dev4->ports[14];
tunnel = tb_tunnel_alloc_dp(NULL, in, out, 1, 0, 0);
KUNIT_ASSERT_NOT_NULL(test, tunnel);
KUNIT_EXPECT_EQ(test, tunnel->type, TB_TUNNEL_DP);
KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, in);
KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, out);
KUNIT_ASSERT_EQ(test, tunnel->npaths, 3);
KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 3);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, in);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[2].out_port, out);
KUNIT_ASSERT_EQ(test, tunnel->paths[1]->path_length, 3);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].in_port, in);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[2].out_port, out);
KUNIT_ASSERT_EQ(test, tunnel->paths[2]->path_length, 3);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[0].in_port, out);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[2].out_port, in);
tb_tunnel_free(tunnel);
}
static void tb_test_tunnel_dp_tree(struct kunit *test)
{
struct tb_switch *host, *dev1, *dev2, *dev3, *dev5;
struct tb_port *in, *out;
struct tb_tunnel *tunnel;
/*
* Create DP tunnel from Device #2 DP IN to Device #5 DP OUT.
*
* [Host]
* 3 |
* 1 |
* [Device #1]
* 3 / | 5 \ 7
* 1 / | \ 1
* [Device #2] | [Device #4]
* | 1
* [Device #3]
* | 5
* | 1
* [Device #5]
*/
host = alloc_host(test);
dev1 = alloc_dev_default(test, host, 0x3, true);
dev2 = alloc_dev_with_dpin(test, dev1, 0x303, true);
dev3 = alloc_dev_default(test, dev1, 0x503, true);
alloc_dev_default(test, dev1, 0x703, true);
dev5 = alloc_dev_default(test, dev3, 0x50503, true);
in = &dev2->ports[13];
out = &dev5->ports[13];
tunnel = tb_tunnel_alloc_dp(NULL, in, out, 1, 0, 0);
KUNIT_ASSERT_NOT_NULL(test, tunnel);
KUNIT_EXPECT_EQ(test, tunnel->type, TB_TUNNEL_DP);
KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, in);
KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, out);
KUNIT_ASSERT_EQ(test, tunnel->npaths, 3);
KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 4);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, in);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[3].out_port, out);
KUNIT_ASSERT_EQ(test, tunnel->paths[1]->path_length, 4);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].in_port, in);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[3].out_port, out);
KUNIT_ASSERT_EQ(test, tunnel->paths[2]->path_length, 4);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[0].in_port, out);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[3].out_port, in);
tb_tunnel_free(tunnel);
}
static void tb_test_tunnel_dp_max_length(struct kunit *test)
{
struct tb_switch *host, *dev1, *dev2, *dev3, *dev4, *dev5, *dev6;
struct tb_switch *dev7, *dev8, *dev9, *dev10, *dev11, *dev12;
struct tb_port *in, *out;
struct tb_tunnel *tunnel;
/*
* Creates DP tunnel from Device #6 to Device #12.
*
* [Host]
* 1 / \ 3
* 1 / \ 1
* [Device #1] [Device #7]
* 3 | | 3
* 1 | | 1
* [Device #2] [Device #8]
* 3 | | 3
* 1 | | 1
* [Device #3] [Device #9]
* 3 | | 3
* 1 | | 1
* [Device #4] [Device #10]
* 3 | | 3
* 1 | | 1
* [Device #5] [Device #11]
* 3 | | 3
* 1 | | 1
* [Device #6] [Device #12]
*/
host = alloc_host(test);
dev1 = alloc_dev_default(test, host, 0x1, true);
dev2 = alloc_dev_default(test, dev1, 0x301, true);
dev3 = alloc_dev_default(test, dev2, 0x30301, true);
dev4 = alloc_dev_default(test, dev3, 0x3030301, true);
dev5 = alloc_dev_default(test, dev4, 0x303030301, true);
dev6 = alloc_dev_with_dpin(test, dev5, 0x30303030301, true);
dev7 = alloc_dev_default(test, host, 0x3, true);
dev8 = alloc_dev_default(test, dev7, 0x303, true);
dev9 = alloc_dev_default(test, dev8, 0x30303, true);
dev10 = alloc_dev_default(test, dev9, 0x3030303, true);
dev11 = alloc_dev_default(test, dev10, 0x303030303, true);
dev12 = alloc_dev_default(test, dev11, 0x30303030303, true);
in = &dev6->ports[13];
out = &dev12->ports[13];
tunnel = tb_tunnel_alloc_dp(NULL, in, out, 1, 0, 0);
KUNIT_ASSERT_NOT_NULL(test, tunnel);
KUNIT_EXPECT_EQ(test, tunnel->type, TB_TUNNEL_DP);
KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, in);
KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, out);
KUNIT_ASSERT_EQ(test, tunnel->npaths, 3);
KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 13);
/* First hop */
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, in);
/* Middle */
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[6].in_port,
&host->ports[1]);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[6].out_port,
&host->ports[3]);
/* Last */
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[12].out_port, out);
KUNIT_ASSERT_EQ(test, tunnel->paths[1]->path_length, 13);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].in_port, in);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[6].in_port,
&host->ports[1]);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[6].out_port,
&host->ports[3]);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[12].out_port, out);
KUNIT_ASSERT_EQ(test, tunnel->paths[2]->path_length, 13);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[0].in_port, out);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[6].in_port,
&host->ports[3]);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[6].out_port,
&host->ports[1]);
KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[12].out_port, in);
tb_tunnel_free(tunnel);
}
static void tb_test_tunnel_3dp(struct kunit *test)
{
struct tb_switch *host, *dev1, *dev2, *dev3, *dev4, *dev5;
struct tb_port *in1, *in2, *in3, *out1, *out2, *out3;
struct tb_tunnel *tunnel1, *tunnel2, *tunnel3;
/*
* Create 3 DP tunnels from Host to Devices #2, #5 and #4.
*
* [Host]
* 3 |
* 1 |
* [Device #1]
* 3 / | 5 \ 7
* 1 / | \ 1
* [Device #2] | [Device #4]
* | 1
* [Device #3]
* | 5
* | 1
* [Device #5]
*/
host = alloc_host_br(test);
dev1 = alloc_dev_default(test, host, 0x3, true);
dev2 = alloc_dev_default(test, dev1, 0x303, true);
dev3 = alloc_dev_default(test, dev1, 0x503, true);
dev4 = alloc_dev_default(test, dev1, 0x703, true);
dev5 = alloc_dev_default(test, dev3, 0x50503, true);
in1 = &host->ports[5];
in2 = &host->ports[6];
in3 = &host->ports[10];
out1 = &dev2->ports[13];
out2 = &dev5->ports[13];
out3 = &dev4->ports[14];
tunnel1 = tb_tunnel_alloc_dp(NULL, in1, out1, 1, 0, 0);
KUNIT_ASSERT_TRUE(test, tunnel1 != NULL);
KUNIT_EXPECT_EQ(test, tunnel1->type, TB_TUNNEL_DP);
KUNIT_EXPECT_PTR_EQ(test, tunnel1->src_port, in1);
KUNIT_EXPECT_PTR_EQ(test, tunnel1->dst_port, out1);
KUNIT_ASSERT_EQ(test, tunnel1->npaths, 3);
KUNIT_ASSERT_EQ(test, tunnel1->paths[0]->path_length, 3);
tunnel2 = tb_tunnel_alloc_dp(NULL, in2, out2, 1, 0, 0);
KUNIT_ASSERT_TRUE(test, tunnel2 != NULL);
KUNIT_EXPECT_EQ(test, tunnel2->type, TB_TUNNEL_DP);
KUNIT_EXPECT_PTR_EQ(test, tunnel2->src_port, in2);
KUNIT_EXPECT_PTR_EQ(test, tunnel2->dst_port, out2);
KUNIT_ASSERT_EQ(test, tunnel2->npaths, 3);
KUNIT_ASSERT_EQ(test, tunnel2->paths[0]->path_length, 4);
tunnel3 = tb_tunnel_alloc_dp(NULL, in3, out3, 1, 0, 0);
KUNIT_ASSERT_TRUE(test, tunnel3 != NULL);
KUNIT_EXPECT_EQ(test, tunnel3->type, TB_TUNNEL_DP);
KUNIT_EXPECT_PTR_EQ(test, tunnel3->src_port, in3);
KUNIT_EXPECT_PTR_EQ(test, tunnel3->dst_port, out3);
KUNIT_ASSERT_EQ(test, tunnel3->npaths, 3);
KUNIT_ASSERT_EQ(test, tunnel3->paths[0]->path_length, 3);
tb_tunnel_free(tunnel2);
tb_tunnel_free(tunnel1);
}
static void tb_test_tunnel_usb3(struct kunit *test)
{
struct tb_switch *host, *dev1, *dev2;
struct tb_tunnel *tunnel1, *tunnel2;
struct tb_port *down, *up;
/*
* Create USB3 tunnel between host and two devices.
*
* [Host]
* 1 |
* 1 |
* [Device #1]
* \ 7
* \ 1
* [Device #2]
*/
host = alloc_host(test);
dev1 = alloc_dev_default(test, host, 0x1, true);
dev2 = alloc_dev_default(test, dev1, 0x701, true);
down = &host->ports[12];
up = &dev1->ports[16];
tunnel1 = tb_tunnel_alloc_usb3(NULL, up, down, 0, 0);
KUNIT_ASSERT_NOT_NULL(test, tunnel1);
KUNIT_EXPECT_EQ(test, tunnel1->type, TB_TUNNEL_USB3);
KUNIT_EXPECT_PTR_EQ(test, tunnel1->src_port, down);
KUNIT_EXPECT_PTR_EQ(test, tunnel1->dst_port, up);
KUNIT_ASSERT_EQ(test, tunnel1->npaths, 2);
KUNIT_ASSERT_EQ(test, tunnel1->paths[0]->path_length, 2);
KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[0]->hops[0].in_port, down);
KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[0]->hops[1].out_port, up);
KUNIT_ASSERT_EQ(test, tunnel1->paths[1]->path_length, 2);
KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[1]->hops[0].in_port, up);
KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[1]->hops[1].out_port, down);
down = &dev1->ports[17];
up = &dev2->ports[16];
tunnel2 = tb_tunnel_alloc_usb3(NULL, up, down, 0, 0);
KUNIT_ASSERT_NOT_NULL(test, tunnel2);
KUNIT_EXPECT_EQ(test, tunnel2->type, TB_TUNNEL_USB3);
KUNIT_EXPECT_PTR_EQ(test, tunnel2->src_port, down);
KUNIT_EXPECT_PTR_EQ(test, tunnel2->dst_port, up);
KUNIT_ASSERT_EQ(test, tunnel2->npaths, 2);
KUNIT_ASSERT_EQ(test, tunnel2->paths[0]->path_length, 2);
KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[0]->hops[0].in_port, down);
KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[0]->hops[1].out_port, up);
KUNIT_ASSERT_EQ(test, tunnel2->paths[1]->path_length, 2);
KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[1]->hops[0].in_port, up);
KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[1]->hops[1].out_port, down);
tb_tunnel_free(tunnel2);
tb_tunnel_free(tunnel1);
}
static void tb_test_tunnel_port_on_path(struct kunit *test)
{
struct tb_switch *host, *dev1, *dev2, *dev3, *dev4, *dev5;
struct tb_port *in, *out, *port;
struct tb_tunnel *dp_tunnel;
/*
* [Host]
* 3 |
* 1 |
* [Device #1]
* 3 / | 5 \ 7
* 1 / | \ 1
* [Device #2] | [Device #4]
* | 1
* [Device #3]
* | 5
* | 1
* [Device #5]
*/
host = alloc_host(test);
dev1 = alloc_dev_default(test, host, 0x3, true);
dev2 = alloc_dev_with_dpin(test, dev1, 0x303, true);
dev3 = alloc_dev_default(test, dev1, 0x503, true);
dev4 = alloc_dev_default(test, dev1, 0x703, true);
dev5 = alloc_dev_default(test, dev3, 0x50503, true);
in = &dev2->ports[13];
out = &dev5->ports[13];
dp_tunnel = tb_tunnel_alloc_dp(NULL, in, out, 1, 0, 0);
KUNIT_ASSERT_NOT_NULL(test, dp_tunnel);
KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, in));
KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, out));
port = &host->ports[8];
KUNIT_EXPECT_FALSE(test, tb_tunnel_port_on_path(dp_tunnel, port));
port = &host->ports[3];
KUNIT_EXPECT_FALSE(test, tb_tunnel_port_on_path(dp_tunnel, port));
port = &dev1->ports[1];
KUNIT_EXPECT_FALSE(test, tb_tunnel_port_on_path(dp_tunnel, port));
port = &dev1->ports[3];
KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, port));
port = &dev1->ports[5];
KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, port));
port = &dev1->ports[7];
KUNIT_EXPECT_FALSE(test, tb_tunnel_port_on_path(dp_tunnel, port));
port = &dev3->ports[1];
KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, port));
port = &dev5->ports[1];
KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, port));
port = &dev4->ports[1];
KUNIT_EXPECT_FALSE(test, tb_tunnel_port_on_path(dp_tunnel, port));
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_NOT_NULL(test, tunnel);
KUNIT_EXPECT_EQ(test, 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, 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_NOT_NULL(test, tunnel);
KUNIT_EXPECT_EQ(test, 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, 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_NOT_NULL(test, tunnel);
KUNIT_EXPECT_EQ(test, 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, 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_NOT_NULL(test, tunnel);
KUNIT_EXPECT_EQ(test, 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, 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_NOT_NULL(test, tunnel);
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_NOT_NULL(test, tunnel);
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_NOT_NULL(test, tunnel);
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 void tb_test_credit_alloc_legacy_not_bonded(struct kunit *test)
{
struct tb_switch *host, *dev;
struct tb_port *up, *down;
struct tb_tunnel *tunnel;
struct tb_path *path;
host = alloc_host(test);
dev = alloc_dev_default(test, host, 0x1, false);
down = &host->ports[8];
up = &dev->ports[9];
tunnel = tb_tunnel_alloc_pci(NULL, up, down);
KUNIT_ASSERT_NOT_NULL(test, tunnel);
KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)2);
path = tunnel->paths[0];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 16U);
path = tunnel->paths[1];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 16U);
tb_tunnel_free(tunnel);
}
static void tb_test_credit_alloc_legacy_bonded(struct kunit *test)
{
struct tb_switch *host, *dev;
struct tb_port *up, *down;
struct tb_tunnel *tunnel;
struct tb_path *path;
host = alloc_host(test);
dev = alloc_dev_default(test, host, 0x1, true);
down = &host->ports[8];
up = &dev->ports[9];
tunnel = tb_tunnel_alloc_pci(NULL, up, down);
KUNIT_ASSERT_NOT_NULL(test, tunnel);
KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)2);
path = tunnel->paths[0];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 32U);
path = tunnel->paths[1];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 32U);
tb_tunnel_free(tunnel);
}
static void tb_test_credit_alloc_pcie(struct kunit *test)
{
struct tb_switch *host, *dev;
struct tb_port *up, *down;
struct tb_tunnel *tunnel;
struct tb_path *path;
host = alloc_host_usb4(test);
dev = alloc_dev_usb4(test, host, 0x1, true);
down = &host->ports[8];
up = &dev->ports[9];
tunnel = tb_tunnel_alloc_pci(NULL, up, down);
KUNIT_ASSERT_NOT_NULL(test, tunnel);
KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)2);
path = tunnel->paths[0];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 32U);
path = tunnel->paths[1];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 64U);
tb_tunnel_free(tunnel);
}
static void tb_test_credit_alloc_without_dp(struct kunit *test)
{
struct tb_switch *host, *dev;
struct tb_port *up, *down;
struct tb_tunnel *tunnel;
struct tb_path *path;
host = alloc_host_usb4(test);
dev = alloc_dev_without_dp(test, host, 0x1, true);
/*
* The device has no DP therefore baMinDPmain = baMinDPaux = 0
*
* Create PCIe path with buffers less than baMaxPCIe.
*
* For a device with buffers configurations:
* baMaxUSB3 = 109
* baMinDPaux = 0
* baMinDPmain = 0
* baMaxPCIe = 30
* baMaxHI = 1
* Remaining Buffers = Total - (CP + DP) = 120 - (2 + 0) = 118
* PCIe Credits = Max(6, Min(baMaxPCIe, Remaining Buffers - baMaxUSB3)
* = Max(6, Min(30, 9) = 9
*/
down = &host->ports[8];
up = &dev->ports[9];
tunnel = tb_tunnel_alloc_pci(NULL, up, down);
KUNIT_ASSERT_TRUE(test, tunnel != NULL);
KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)2);
/* PCIe downstream path */
path = tunnel->paths[0];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 9U);
/* PCIe upstream path */
path = tunnel->paths[1];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 64U);
tb_tunnel_free(tunnel);
}
static void tb_test_credit_alloc_dp(struct kunit *test)
{
struct tb_switch *host, *dev;
struct tb_port *in, *out;
struct tb_tunnel *tunnel;
struct tb_path *path;
host = alloc_host_usb4(test);
dev = alloc_dev_usb4(test, host, 0x1, true);
in = &host->ports[5];
out = &dev->ports[14];
tunnel = tb_tunnel_alloc_dp(NULL, in, out, 1, 0, 0);
KUNIT_ASSERT_NOT_NULL(test, tunnel);
KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)3);
/* Video (main) path */
path = tunnel->paths[0];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 12U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 18U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 0U);
/* AUX TX */
path = tunnel->paths[1];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 1U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U);
/* AUX RX */
path = tunnel->paths[2];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 1U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U);
tb_tunnel_free(tunnel);
}
static void tb_test_credit_alloc_usb3(struct kunit *test)
{
struct tb_switch *host, *dev;
struct tb_port *up, *down;
struct tb_tunnel *tunnel;
struct tb_path *path;
host = alloc_host_usb4(test);
dev = alloc_dev_usb4(test, host, 0x1, true);
down = &host->ports[12];
up = &dev->ports[16];
tunnel = tb_tunnel_alloc_usb3(NULL, up, down, 0, 0);
KUNIT_ASSERT_NOT_NULL(test, tunnel);
KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)2);
path = tunnel->paths[0];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U);
path = tunnel->paths[1];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 32U);
tb_tunnel_free(tunnel);
}
static void tb_test_credit_alloc_dma(struct kunit *test)
{
struct tb_switch *host, *dev;
struct tb_port *nhi, *port;
struct tb_tunnel *tunnel;
struct tb_path *path;
host = alloc_host_usb4(test);
dev = alloc_dev_usb4(test, host, 0x1, true);
nhi = &host->ports[7];
port = &dev->ports[3];
tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 8, 1, 8, 1);
KUNIT_ASSERT_NOT_NULL(test, tunnel);
KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)2);
/* DMA RX */
path = tunnel->paths[0];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 14U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U);
/* DMA TX */
path = tunnel->paths[1];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U);
tb_tunnel_free(tunnel);
}
static void tb_test_credit_alloc_dma_multiple(struct kunit *test)
{
struct tb_tunnel *tunnel1, *tunnel2, *tunnel3;
struct tb_switch *host, *dev;
struct tb_port *nhi, *port;
struct tb_path *path;
host = alloc_host_usb4(test);
dev = alloc_dev_usb4(test, host, 0x1, true);
nhi = &host->ports[7];
port = &dev->ports[3];
/*
* Create three DMA tunnels through the same ports. With the
* default buffers we should be able to create two and the last
* one fails.
*
* For default host we have following buffers for DMA:
*
* 120 - (2 + 2 * (1 + 0) + 32 + 64 + spare) = 20
*
* For device we have following:
*
* 120 - (2 + 2 * (1 + 18) + 14 + 32 + spare) = 34
*
* spare = 14 + 1 = 15
*
* So on host the first tunnel gets 14 and the second gets the
* remaining 1 and then we run out of buffers.
*/
tunnel1 = tb_tunnel_alloc_dma(NULL, nhi, port, 8, 1, 8, 1);
KUNIT_ASSERT_NOT_NULL(test, tunnel1);
KUNIT_ASSERT_EQ(test, tunnel1->npaths, (size_t)2);
path = tunnel1->paths[0];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 14U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U);
path = tunnel1->paths[1];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U);
tunnel2 = tb_tunnel_alloc_dma(NULL, nhi, port, 9, 2, 9, 2);
KUNIT_ASSERT_NOT_NULL(test, tunnel2);
KUNIT_ASSERT_EQ(test, tunnel2->npaths, (size_t)2);
path = tunnel2->paths[0];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 14U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U);
path = tunnel2->paths[1];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U);
tunnel3 = tb_tunnel_alloc_dma(NULL, nhi, port, 10, 3, 10, 3);
KUNIT_ASSERT_NULL(test, tunnel3);
/*
* Release the first DMA tunnel. That should make 14 buffers
* available for the next tunnel.
*/
tb_tunnel_free(tunnel1);
tunnel3 = tb_tunnel_alloc_dma(NULL, nhi, port, 10, 3, 10, 3);
KUNIT_ASSERT_NOT_NULL(test, tunnel3);
path = tunnel3->paths[0];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 14U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U);
path = tunnel3->paths[1];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U);
tb_tunnel_free(tunnel3);
tb_tunnel_free(tunnel2);
}
static struct tb_tunnel *TB_TEST_PCIE_TUNNEL(struct kunit *test,
struct tb_switch *host, struct tb_switch *dev)
{
struct tb_port *up, *down;
struct tb_tunnel *pcie_tunnel;
struct tb_path *path;
down = &host->ports[8];
up = &dev->ports[9];
pcie_tunnel = tb_tunnel_alloc_pci(NULL, up, down);
KUNIT_ASSERT_NOT_NULL(test, pcie_tunnel);
KUNIT_ASSERT_EQ(test, pcie_tunnel->npaths, (size_t)2);
path = pcie_tunnel->paths[0];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 32U);
path = pcie_tunnel->paths[1];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 64U);
return pcie_tunnel;
}
static struct tb_tunnel *TB_TEST_DP_TUNNEL1(struct kunit *test,
struct tb_switch *host, struct tb_switch *dev)
{
struct tb_port *in, *out;
struct tb_tunnel *dp_tunnel1;
struct tb_path *path;
in = &host->ports[5];
out = &dev->ports[13];
dp_tunnel1 = tb_tunnel_alloc_dp(NULL, in, out, 1, 0, 0);
KUNIT_ASSERT_NOT_NULL(test, dp_tunnel1);
KUNIT_ASSERT_EQ(test, dp_tunnel1->npaths, (size_t)3);
path = dp_tunnel1->paths[0];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 12U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 18U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 0U);
path = dp_tunnel1->paths[1];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 1U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U);
path = dp_tunnel1->paths[2];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 1U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U);
return dp_tunnel1;
}
static struct tb_tunnel *TB_TEST_DP_TUNNEL2(struct kunit *test,
struct tb_switch *host, struct tb_switch *dev)
{
struct tb_port *in, *out;
struct tb_tunnel *dp_tunnel2;
struct tb_path *path;
in = &host->ports[6];
out = &dev->ports[14];
dp_tunnel2 = tb_tunnel_alloc_dp(NULL, in, out, 1, 0, 0);
KUNIT_ASSERT_NOT_NULL(test, dp_tunnel2);
KUNIT_ASSERT_EQ(test, dp_tunnel2->npaths, (size_t)3);
path = dp_tunnel2->paths[0];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 12U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 18U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 0U);
path = dp_tunnel2->paths[1];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 1U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U);
path = dp_tunnel2->paths[2];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 1U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U);
return dp_tunnel2;
}
static struct tb_tunnel *TB_TEST_USB3_TUNNEL(struct kunit *test,
struct tb_switch *host, struct tb_switch *dev)
{
struct tb_port *up, *down;
struct tb_tunnel *usb3_tunnel;
struct tb_path *path;
down = &host->ports[12];
up = &dev->ports[16];
usb3_tunnel = tb_tunnel_alloc_usb3(NULL, up, down, 0, 0);
KUNIT_ASSERT_NOT_NULL(test, usb3_tunnel);
KUNIT_ASSERT_EQ(test, usb3_tunnel->npaths, (size_t)2);
path = usb3_tunnel->paths[0];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U);
path = usb3_tunnel->paths[1];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 32U);
return usb3_tunnel;
}
static struct tb_tunnel *TB_TEST_DMA_TUNNEL1(struct kunit *test,
struct tb_switch *host, struct tb_switch *dev)
{
struct tb_port *nhi, *port;
struct tb_tunnel *dma_tunnel1;
struct tb_path *path;
nhi = &host->ports[7];
port = &dev->ports[3];
dma_tunnel1 = tb_tunnel_alloc_dma(NULL, nhi, port, 8, 1, 8, 1);
KUNIT_ASSERT_NOT_NULL(test, dma_tunnel1);
KUNIT_ASSERT_EQ(test, dma_tunnel1->npaths, (size_t)2);
path = dma_tunnel1->paths[0];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 14U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U);
path = dma_tunnel1->paths[1];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U);
return dma_tunnel1;
}
static struct tb_tunnel *TB_TEST_DMA_TUNNEL2(struct kunit *test,
struct tb_switch *host, struct tb_switch *dev)
{
struct tb_port *nhi, *port;
struct tb_tunnel *dma_tunnel2;
struct tb_path *path;
nhi = &host->ports[7];
port = &dev->ports[3];
dma_tunnel2 = tb_tunnel_alloc_dma(NULL, nhi, port, 9, 2, 9, 2);
KUNIT_ASSERT_NOT_NULL(test, dma_tunnel2);
KUNIT_ASSERT_EQ(test, dma_tunnel2->npaths, (size_t)2);
path = dma_tunnel2->paths[0];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 14U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U);
path = dma_tunnel2->paths[1];
KUNIT_ASSERT_EQ(test, path->path_length, 2);
KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U);
KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U);
return dma_tunnel2;
}
static void tb_test_credit_alloc_all(struct kunit *test)
{
struct tb_tunnel *pcie_tunnel, *dp_tunnel1, *dp_tunnel2, *usb3_tunnel;
struct tb_tunnel *dma_tunnel1, *dma_tunnel2;
struct tb_switch *host, *dev;
/*
* Create PCIe, 2 x DP, USB 3.x and two DMA tunnels from host to
* device. Expectation is that all these can be established with
* the default credit allocation found in Intel hardware.
*/
host = alloc_host_usb4(test);
dev = alloc_dev_usb4(test, host, 0x1, true);
pcie_tunnel = TB_TEST_PCIE_TUNNEL(test, host, dev);
dp_tunnel1 = TB_TEST_DP_TUNNEL1(test, host, dev);
dp_tunnel2 = TB_TEST_DP_TUNNEL2(test, host, dev);
usb3_tunnel = TB_TEST_USB3_TUNNEL(test, host, dev);
dma_tunnel1 = TB_TEST_DMA_TUNNEL1(test, host, dev);
dma_tunnel2 = TB_TEST_DMA_TUNNEL2(test, host, dev);
tb_tunnel_free(dma_tunnel2);
tb_tunnel_free(dma_tunnel1);
tb_tunnel_free(usb3_tunnel);
tb_tunnel_free(dp_tunnel2);
tb_tunnel_free(dp_tunnel1);
tb_tunnel_free(pcie_tunnel);
}
static const u32 root_directory[] = {
0x55584401, /* "UXD" v1 */
0x00000018, /* Root directory length */
0x76656e64, /* "vend" */
0x6f726964, /* "orid" */
0x76000001, /* "v" R 1 */
0x00000a27, /* Immediate value, ! Vendor ID */
0x76656e64, /* "vend" */
0x6f726964, /* "orid" */
0x74000003, /* "t" R 3 */
0x0000001a, /* Text leaf offset, (“Apple Inc.”) */
0x64657669, /* "devi" */
0x63656964, /* "ceid" */
0x76000001, /* "v" R 1 */
0x0000000a, /* Immediate value, ! Device ID */
0x64657669, /* "devi" */
0x63656964, /* "ceid" */
0x74000003, /* "t" R 3 */
0x0000001d, /* Text leaf offset, (“Macintosh”) */
0x64657669, /* "devi" */
0x63657276, /* "cerv" */
0x76000001, /* "v" R 1 */
0x80000100, /* Immediate value, Device Revision */
0x6e657477, /* "netw" */
0x6f726b00, /* "ork" */
0x44000014, /* "D" R 20 */
0x00000021, /* Directory data offset, (Network Directory) */
0x4170706c, /* "Appl" */
0x6520496e, /* "e In" */
0x632e0000, /* "c." ! */
0x4d616369, /* "Maci" */
0x6e746f73, /* "ntos" */
0x68000000, /* "h" */
0x00000000, /* padding */
0xca8961c6, /* Directory UUID, Network Directory */
0x9541ce1c, /* Directory UUID, Network Directory */
0x5949b8bd, /* Directory UUID, Network Directory */
0x4f5a5f2e, /* Directory UUID, Network Directory */
0x70727463, /* "prtc" */
0x69640000, /* "id" */
0x76000001, /* "v" R 1 */
0x00000001, /* Immediate value, Network Protocol ID */
0x70727463, /* "prtc" */
0x76657273, /* "vers" */
0x76000001, /* "v" R 1 */
0x00000001, /* Immediate value, Network Protocol Version */
0x70727463, /* "prtc" */
0x72657673, /* "revs" */
0x76000001, /* "v" R 1 */
0x00000001, /* Immediate value, Network Protocol Revision */
0x70727463, /* "prtc" */
0x73746e73, /* "stns" */
0x76000001, /* "v" R 1 */
0x00000000, /* Immediate value, Network Protocol Settings */
};
static const uuid_t network_dir_uuid =
UUID_INIT(0xc66189ca, 0x1cce, 0x4195,
0xbd, 0xb8, 0x49, 0x59, 0x2e, 0x5f, 0x5a, 0x4f);
static void tb_test_property_parse(struct kunit *test)
{
struct tb_property_dir *dir, *network_dir;
struct tb_property *p;
dir = tb_property_parse_dir(root_directory, ARRAY_SIZE(root_directory));
KUNIT_ASSERT_NOT_NULL(test, dir);
p = tb_property_find(dir, "foo", TB_PROPERTY_TYPE_TEXT);
KUNIT_ASSERT_NULL(test, p);
p = tb_property_find(dir, "vendorid", TB_PROPERTY_TYPE_TEXT);
KUNIT_ASSERT_NOT_NULL(test, p);
KUNIT_EXPECT_STREQ(test, p->value.text, "Apple Inc.");
p = tb_property_find(dir, "vendorid", TB_PROPERTY_TYPE_VALUE);
KUNIT_ASSERT_NOT_NULL(test, p);
KUNIT_EXPECT_EQ(test, p->value.immediate, 0xa27);
p = tb_property_find(dir, "deviceid", TB_PROPERTY_TYPE_TEXT);
KUNIT_ASSERT_NOT_NULL(test, p);
KUNIT_EXPECT_STREQ(test, p->value.text, "Macintosh");
p = tb_property_find(dir, "deviceid", TB_PROPERTY_TYPE_VALUE);
KUNIT_ASSERT_NOT_NULL(test, p);
KUNIT_EXPECT_EQ(test, p->value.immediate, 0xa);
p = tb_property_find(dir, "missing", TB_PROPERTY_TYPE_DIRECTORY);
KUNIT_ASSERT_NULL(test, p);
p = tb_property_find(dir, "network", TB_PROPERTY_TYPE_DIRECTORY);
KUNIT_ASSERT_NOT_NULL(test, p);
network_dir = p->value.dir;
KUNIT_EXPECT_TRUE(test, uuid_equal(network_dir->uuid, &network_dir_uuid));
p = tb_property_find(network_dir, "prtcid", TB_PROPERTY_TYPE_VALUE);
KUNIT_ASSERT_NOT_NULL(test, p);
KUNIT_EXPECT_EQ(test, p->value.immediate, 0x1);
p = tb_property_find(network_dir, "prtcvers", TB_PROPERTY_TYPE_VALUE);
KUNIT_ASSERT_NOT_NULL(test, p);
KUNIT_EXPECT_EQ(test, p->value.immediate, 0x1);
p = tb_property_find(network_dir, "prtcrevs", TB_PROPERTY_TYPE_VALUE);
KUNIT_ASSERT_NOT_NULL(test, p);
KUNIT_EXPECT_EQ(test, p->value.immediate, 0x1);
p = tb_property_find(network_dir, "prtcstns", TB_PROPERTY_TYPE_VALUE);
KUNIT_ASSERT_NOT_NULL(test, p);
KUNIT_EXPECT_EQ(test, p->value.immediate, 0x0);
p = tb_property_find(network_dir, "deviceid", TB_PROPERTY_TYPE_VALUE);
KUNIT_EXPECT_TRUE(test, !p);
p = tb_property_find(network_dir, "deviceid", TB_PROPERTY_TYPE_TEXT);
KUNIT_EXPECT_TRUE(test, !p);
tb_property_free_dir(dir);
}
static void tb_test_property_format(struct kunit *test)
{
struct tb_property_dir *dir;
ssize_t block_len;
u32 *block;
int ret, i;
dir = tb_property_parse_dir(root_directory, ARRAY_SIZE(root_directory));
KUNIT_ASSERT_NOT_NULL(test, dir);
ret = tb_property_format_dir(dir, NULL, 0);
KUNIT_ASSERT_EQ(test, ret, ARRAY_SIZE(root_directory));
block_len = ret;
block = kunit_kzalloc(test, block_len * sizeof(u32), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, block);
ret = tb_property_format_dir(dir, block, block_len);
KUNIT_EXPECT_EQ(test, ret, 0);
for (i = 0; i < ARRAY_SIZE(root_directory); i++)
KUNIT_EXPECT_EQ(test, root_directory[i], block[i]);
tb_property_free_dir(dir);
}
static void compare_dirs(struct kunit *test, struct tb_property_dir *d1,
struct tb_property_dir *d2)
{
struct tb_property *p1, *p2, *tmp;
int n1, n2, i;
if (d1->uuid) {
KUNIT_ASSERT_NOT_NULL(test, d2->uuid);
KUNIT_ASSERT_TRUE(test, uuid_equal(d1->uuid, d2->uuid));
} else {
KUNIT_ASSERT_NULL(test, d2->uuid);
}
n1 = 0;
tb_property_for_each(d1, tmp)
n1++;
KUNIT_ASSERT_NE(test, n1, 0);
n2 = 0;
tb_property_for_each(d2, tmp)
n2++;
KUNIT_ASSERT_NE(test, n2, 0);
KUNIT_ASSERT_EQ(test, n1, n2);
p1 = NULL;
p2 = NULL;
for (i = 0; i < n1; i++) {
p1 = tb_property_get_next(d1, p1);
KUNIT_ASSERT_NOT_NULL(test, p1);
p2 = tb_property_get_next(d2, p2);
KUNIT_ASSERT_NOT_NULL(test, p2);
KUNIT_ASSERT_STREQ(test, &p1->key[0], &p2->key[0]);
KUNIT_ASSERT_EQ(test, p1->type, p2->type);
KUNIT_ASSERT_EQ(test, p1->length, p2->length);
switch (p1->type) {
case TB_PROPERTY_TYPE_DIRECTORY:
KUNIT_ASSERT_NOT_NULL(test, p1->value.dir);
KUNIT_ASSERT_NOT_NULL(test, p2->value.dir);
compare_dirs(test, p1->value.dir, p2->value.dir);
break;
case TB_PROPERTY_TYPE_DATA:
KUNIT_ASSERT_NOT_NULL(test, p1->value.data);
KUNIT_ASSERT_NOT_NULL(test, p2->value.data);
KUNIT_ASSERT_TRUE(test,
!memcmp(p1->value.data, p2->value.data,
p1->length * 4)
);
break;
case TB_PROPERTY_TYPE_TEXT:
KUNIT_ASSERT_NOT_NULL(test, p1->value.text);
KUNIT_ASSERT_NOT_NULL(test, p2->value.text);
KUNIT_ASSERT_STREQ(test, p1->value.text, p2->value.text);
break;
case TB_PROPERTY_TYPE_VALUE:
KUNIT_ASSERT_EQ(test, p1->value.immediate,
p2->value.immediate);
break;
default:
KUNIT_FAIL(test, "unexpected property type");
break;
}
}
}
static void tb_test_property_copy(struct kunit *test)
{
struct tb_property_dir *src, *dst;
u32 *block;
int ret, i;
src = tb_property_parse_dir(root_directory, ARRAY_SIZE(root_directory));
KUNIT_ASSERT_NOT_NULL(test, src);
dst = tb_property_copy_dir(src);
KUNIT_ASSERT_NOT_NULL(test, dst);
/* Compare the structures */
compare_dirs(test, src, dst);
/* Compare the resulting property block */
ret = tb_property_format_dir(dst, NULL, 0);
KUNIT_ASSERT_EQ(test, ret, ARRAY_SIZE(root_directory));
block = kunit_kzalloc(test, sizeof(root_directory), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, block);
ret = tb_property_format_dir(dst, block, ARRAY_SIZE(root_directory));
KUNIT_EXPECT_TRUE(test, !ret);
for (i = 0; i < ARRAY_SIZE(root_directory); i++)
KUNIT_EXPECT_EQ(test, root_directory[i], block[i]);
tb_property_free_dir(dst);
tb_property_free_dir(src);
}
static struct kunit_case tb_test_cases[] = {
KUNIT_CASE(tb_test_path_basic),
KUNIT_CASE(tb_test_path_not_connected_walk),
KUNIT_CASE(tb_test_path_single_hop_walk),
KUNIT_CASE(tb_test_path_daisy_chain_walk),
KUNIT_CASE(tb_test_path_simple_tree_walk),
KUNIT_CASE(tb_test_path_complex_tree_walk),
KUNIT_CASE(tb_test_path_max_length_walk),
KUNIT_CASE(tb_test_path_not_connected),
KUNIT_CASE(tb_test_path_not_bonded_lane0),
KUNIT_CASE(tb_test_path_not_bonded_lane1),
KUNIT_CASE(tb_test_path_not_bonded_lane1_chain),
KUNIT_CASE(tb_test_path_not_bonded_lane1_chain_reverse),
KUNIT_CASE(tb_test_path_mixed_chain),
KUNIT_CASE(tb_test_path_mixed_chain_reverse),
KUNIT_CASE(tb_test_tunnel_pcie),
KUNIT_CASE(tb_test_tunnel_dp),
KUNIT_CASE(tb_test_tunnel_dp_chain),
KUNIT_CASE(tb_test_tunnel_dp_tree),
KUNIT_CASE(tb_test_tunnel_dp_max_length),
KUNIT_CASE(tb_test_tunnel_3dp),
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_credit_alloc_legacy_not_bonded),
KUNIT_CASE(tb_test_credit_alloc_legacy_bonded),
KUNIT_CASE(tb_test_credit_alloc_pcie),
KUNIT_CASE(tb_test_credit_alloc_without_dp),
KUNIT_CASE(tb_test_credit_alloc_dp),
KUNIT_CASE(tb_test_credit_alloc_usb3),
KUNIT_CASE(tb_test_credit_alloc_dma),
KUNIT_CASE(tb_test_credit_alloc_dma_multiple),
KUNIT_CASE(tb_test_credit_alloc_all),
KUNIT_CASE(tb_test_property_parse),
KUNIT_CASE(tb_test_property_format),
KUNIT_CASE(tb_test_property_copy),
{ }
};
static struct kunit_suite tb_test_suite = {
.name = "thunderbolt",
.test_cases = tb_test_cases,
};
kunit_test_suite(tb_test_suite);