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linux/drivers/thunderbolt/test.c
Linus Torvalds 4b93c544e9 thunderbolt: test: split up test cases in tb_test_credit_alloc_all 
The tb_test_credit_alloc_all() function had a huge number of
KUNIT_ASSERT() statements, all of which (though the magic of many many
layers of inscrutable macros) ended up allocating and initializing
various test assertion structures on the stack.

Don't do that.  The kernel stack isn't infinite, and we have compiler
warnings (now errors) for the case where a stack frame grows too large.

Like it did here, by not an inconsiderable margin:

   drivers/thunderbolt/test.c: In function ‘tb_test_credit_alloc_all’:
   drivers/thunderbolt/test.c:2367:1: error: the frame size of 4500 bytes is larger than 2048 bytes [-Werror=frame-larger-than=]
    2367 | }
         | ^

Solve this similarly to the lib/test_scanf case: split out the tests
into several smaller functions, each just testing one particular tunnel
credit allocation.

This makes the i386 allyesconfig build work for me again.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-06 12:27:03 -07:00

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// 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_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_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_TRUE(test, path == NULL);
path = tb_path_alloc(NULL, down, 8, up, 8, 1, "PCIe Down");
KUNIT_ASSERT_TRUE(test, path == NULL);
}
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_TRUE(test, path != NULL);
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_TRUE(test, path != NULL);
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_TRUE(test, path != NULL);
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_TRUE(test, path != NULL);
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_TRUE(test, path != NULL);
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_TRUE(test, path != NULL);
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_TRUE(test, tunnel1 != NULL);
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_TRUE(test, tunnel2 != NULL);
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, 0, 0);
KUNIT_ASSERT_TRUE(test, tunnel != NULL);
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, 0, 0);
KUNIT_ASSERT_TRUE(test, tunnel != NULL);
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, 0, 0);
KUNIT_ASSERT_TRUE(test, tunnel != NULL);
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, 0, 0);
KUNIT_ASSERT_TRUE(test, tunnel != NULL);
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_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_TRUE(test, tunnel1 != NULL);
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_TRUE(test, tunnel2 != NULL);
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, 0, 0);
KUNIT_ASSERT_TRUE(test, dp_tunnel != NULL);
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_TRUE(test, tunnel != NULL);
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_TRUE(test, tunnel != NULL);
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_TRUE(test, tunnel != NULL);
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_TRUE(test, tunnel != NULL);
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_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 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_TRUE(test, tunnel != NULL);
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_TRUE(test, tunnel != NULL);
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_TRUE(test, tunnel != NULL);
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_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, 0, 0);
KUNIT_ASSERT_TRUE(test, tunnel != NULL);
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_TRUE(test, tunnel != NULL);
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_TRUE(test, tunnel != NULL);
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_TRUE(test, tunnel1 != NULL);
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_TRUE(test, tunnel2 != NULL);
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_TRUE(test, tunnel3 == NULL);
/*
* 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_TRUE(test, tunnel3 != NULL);
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_TRUE(test, pcie_tunnel != NULL);
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, 0, 0);
KUNIT_ASSERT_TRUE(test, dp_tunnel1 != NULL);
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, 0, 0);
KUNIT_ASSERT_TRUE(test, dp_tunnel2 != NULL);
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_TRUE(test, usb3_tunnel != NULL);
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_TRUE(test, dma_tunnel1 != NULL);
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_TRUE(test, dma_tunnel2 != NULL);
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_TRUE(test, dir != NULL);
p = tb_property_find(dir, "foo", TB_PROPERTY_TYPE_TEXT);
KUNIT_ASSERT_TRUE(test, !p);
p = tb_property_find(dir, "vendorid", TB_PROPERTY_TYPE_TEXT);
KUNIT_ASSERT_TRUE(test, p != NULL);
KUNIT_EXPECT_STREQ(test, p->value.text, "Apple Inc.");
p = tb_property_find(dir, "vendorid", TB_PROPERTY_TYPE_VALUE);
KUNIT_ASSERT_TRUE(test, p != NULL);
KUNIT_EXPECT_EQ(test, p->value.immediate, 0xa27);
p = tb_property_find(dir, "deviceid", TB_PROPERTY_TYPE_TEXT);
KUNIT_ASSERT_TRUE(test, p != NULL);
KUNIT_EXPECT_STREQ(test, p->value.text, "Macintosh");
p = tb_property_find(dir, "deviceid", TB_PROPERTY_TYPE_VALUE);
KUNIT_ASSERT_TRUE(test, p != NULL);
KUNIT_EXPECT_EQ(test, p->value.immediate, 0xa);
p = tb_property_find(dir, "missing", TB_PROPERTY_TYPE_DIRECTORY);
KUNIT_ASSERT_TRUE(test, !p);
p = tb_property_find(dir, "network", TB_PROPERTY_TYPE_DIRECTORY);
KUNIT_ASSERT_TRUE(test, p != NULL);
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_TRUE(test, p != NULL);
KUNIT_EXPECT_EQ(test, p->value.immediate, 0x1);
p = tb_property_find(network_dir, "prtcvers", TB_PROPERTY_TYPE_VALUE);
KUNIT_ASSERT_TRUE(test, p != NULL);
KUNIT_EXPECT_EQ(test, p->value.immediate, 0x1);
p = tb_property_find(network_dir, "prtcrevs", TB_PROPERTY_TYPE_VALUE);
KUNIT_ASSERT_TRUE(test, p != NULL);
KUNIT_EXPECT_EQ(test, p->value.immediate, 0x1);
p = tb_property_find(network_dir, "prtcstns", TB_PROPERTY_TYPE_VALUE);
KUNIT_ASSERT_TRUE(test, p != NULL);
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_TRUE(test, dir != NULL);
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_TRUE(test, block != NULL);
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_TRUE(test, d2->uuid != NULL);
KUNIT_ASSERT_TRUE(test, uuid_equal(d1->uuid, d2->uuid));
} else {
KUNIT_ASSERT_TRUE(test, d2->uuid == NULL);
}
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_TRUE(test, p1 != NULL);
p2 = tb_property_get_next(d2, p2);
KUNIT_ASSERT_TRUE(test, p2 != NULL);
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_TRUE(test, p1->value.dir != NULL);
KUNIT_ASSERT_TRUE(test, p2->value.dir != NULL);
compare_dirs(test, p1->value.dir, p2->value.dir);
break;
case TB_PROPERTY_TYPE_DATA:
KUNIT_ASSERT_TRUE(test, p1->value.data != NULL);
KUNIT_ASSERT_TRUE(test, p2->value.data != NULL);
KUNIT_ASSERT_TRUE(test,
!memcmp(p1->value.data, p2->value.data,
p1->length * 4)
);
break;
case TB_PROPERTY_TYPE_TEXT:
KUNIT_ASSERT_TRUE(test, p1->value.text != NULL);
KUNIT_ASSERT_TRUE(test, p2->value.text != NULL);
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_TRUE(test, src != NULL);
dst = tb_property_copy_dir(src);
KUNIT_ASSERT_TRUE(test, dst != NULL);
/* 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_TRUE(test, block != NULL);
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_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_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,
};
static struct kunit_suite *tb_test_suites[] = { &tb_test_suite, NULL };
int tb_test_init(void)
{
return __kunit_test_suites_init(tb_test_suites);
}
void tb_test_exit(void)
{
return __kunit_test_suites_exit(tb_test_suites);
}
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