u-boot/test/dm/pci.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2015 Google, Inc
 */

#include <common.h>
#include <dm.h>
#include <asm/io.h>
#include <dm/test.h>
#include <test/ut.h>

/* Test that sandbox PCI works correctly */
static int dm_test_pci_base(struct unit_test_state *uts)
{
	struct udevice *bus;

	ut_assertok(uclass_get_device(UCLASS_PCI, 0, &bus));

	return 0;
}
DM_TEST(dm_test_pci_base, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);

/* Test that sandbox PCI bus numbering and device works correctly */
static int dm_test_pci_busdev(struct unit_test_state *uts)
{
	struct udevice *bus;
	struct udevice *emul, *swap;

	/* Test bus#0 and its devices */
	ut_assertok(uclass_get_device_by_seq(UCLASS_PCI, 0, &bus));

	ut_assertok(uclass_get_device(UCLASS_PCI_EMUL, 0, &emul));
	ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(0, 0x00, 0), &swap));
	ut_assert(device_active(swap));
	ut_assertok(uclass_get_device(UCLASS_PCI_EMUL, 1, &emul));
	ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(0, 0x1f, 0), &swap));
	ut_assert(device_active(swap));

	/* Test bus#1 and its devices */
	ut_assertok(uclass_get_device_by_seq(UCLASS_PCI, 1, &bus));

	ut_assertok(uclass_get_device(UCLASS_PCI_EMUL, 2, &emul));
	ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(1, 0x08, 0), &swap));
	ut_assert(device_active(swap));
	ut_assertok(uclass_get_device(UCLASS_PCI_EMUL, 3, &emul));
	ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(1, 0x0c, 0), &swap));
	ut_assert(device_active(swap));

	return 0;
}
DM_TEST(dm_test_pci_busdev, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);

/* Test that we can use the swapcase device correctly */
static int dm_test_pci_swapcase(struct unit_test_state *uts)
{
	struct udevice *swap;
	ulong io_addr, mem_addr;
	char *ptr;

	/* Check that asking for the device 0 automatically fires up PCI */
	ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(0, 0x00, 0), &swap));

	/* First test I/O */
	io_addr = dm_pci_read_bar32(swap, 0);
	outb(2, io_addr);
	ut_asserteq(2, inb(io_addr));

	/*
	 * Now test memory mapping - note we must unmap and remap to cause
	 * the swapcase emulation to see our data and response.
	 */
	mem_addr = dm_pci_read_bar32(swap, 1);
	ptr = map_sysmem(mem_addr, 20);
	strcpy(ptr, "This is a TesT");
	unmap_sysmem(ptr);

	ptr = map_sysmem(mem_addr, 20);
	ut_asserteq_str("tHIS IS A tESt", ptr);
	unmap_sysmem(ptr);

	/* Check that asking for the device 1 automatically fires up PCI */
	ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(0, 0x1f, 0), &swap));

	/* First test I/O */
	io_addr = dm_pci_read_bar32(swap, 0);
	outb(2, io_addr);
	ut_asserteq(2, inb(io_addr));

	/*
	 * Now test memory mapping - note we must unmap and remap to cause
	 * the swapcase emulation to see our data and response.
	 */
	mem_addr = dm_pci_read_bar32(swap, 1);
	ptr = map_sysmem(mem_addr, 20);
	strcpy(ptr, "This is a TesT");
	unmap_sysmem(ptr);

	ptr = map_sysmem(mem_addr, 20);
	ut_asserteq_str("tHIS IS A tESt", ptr);
	unmap_sysmem(ptr);

	return 0;
}
DM_TEST(dm_test_pci_swapcase, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);