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// SPDX-License-Identifier: GPL-2.0+
/*
* Tests for ACPI code generation
*
* Copyright 2019 Google LLC
* Written by Simon Glass <sjg@chromium.org>
*/
#include <common.h>
#include <dm.h>
#include <irq.h>
#include <malloc.h>
#include <acpi/acpigen.h>
#include <acpi/acpi_device.h>
#include <asm/gpio.h>
#include <asm/unaligned.h>
#include <dm/acpi.h>
#include <dm/test.h>
#include <dm/uclass-internal.h>
#include <test/ut.h>
/* Maximum size of the ACPI context needed for most tests */
#define ACPI_CONTEXT_SIZE 150
#define TEST_STRING "frogmore"
#define TEST_STREAM2 "\xfa\xde"
static int alloc_context(struct acpi_ctx **ctxp)
{
struct acpi_ctx *ctx;
*ctxp = NULL;
ctx = malloc(sizeof(*ctx));
if (!ctx)
return -ENOMEM;
ctx->base = malloc(ACPI_CONTEXT_SIZE);
if (!ctx->base) {
free(ctx);
return -ENOMEM;
}
ctx->current = ctx->base;
*ctxp = ctx;
return 0;
}
static void free_context(struct acpi_ctx **ctxp)
{
free((*ctxp)->base);
free(*ctxp);
*ctxp = NULL;
}
/* Test emitting simple types and acpigen_get_current() */
static int dm_test_acpi_emit_simple(struct unit_test_state *uts)
{
struct acpi_ctx *ctx;
u8 *ptr;
ut_assertok(alloc_context(&ctx));
ptr = acpigen_get_current(ctx);
acpigen_emit_byte(ctx, 0x23);
ut_asserteq(1, acpigen_get_current(ctx) - ptr);
ut_asserteq(0x23, *(u8 *)ptr);
acpigen_emit_word(ctx, 0x1234);
ut_asserteq(3, acpigen_get_current(ctx) - ptr);
ut_asserteq(0x1234, get_unaligned((u16 *)(ptr + 1)));
acpigen_emit_dword(ctx, 0x87654321);
ut_asserteq(7, acpigen_get_current(ctx) - ptr);
ut_asserteq(0x87654321, get_unaligned((u32 *)(ptr + 3)));
free_context(&ctx);
return 0;
}
DM_TEST(dm_test_acpi_emit_simple, 0);
/* Test emitting a stream */
static int dm_test_acpi_emit_stream(struct unit_test_state *uts)
{
struct acpi_ctx *ctx;
u8 *ptr;
ut_assertok(alloc_context(&ctx));
ptr = acpigen_get_current(ctx);
acpigen_emit_stream(ctx, TEST_STREAM2, 2);
ut_asserteq(2, acpigen_get_current(ctx) - ptr);
ut_asserteq((u8)TEST_STREAM2[0], ptr[0]);
ut_asserteq((u8)TEST_STREAM2[1], ptr[1]);
free_context(&ctx);
return 0;
}
DM_TEST(dm_test_acpi_emit_stream, 0);
/* Test emitting a string */
static int dm_test_acpi_emit_string(struct unit_test_state *uts)
{
struct acpi_ctx *ctx;
u8 *ptr;
ut_assertok(alloc_context(&ctx));
ptr = acpigen_get_current(ctx);
acpigen_emit_string(ctx, TEST_STRING);
ut_asserteq(sizeof(TEST_STRING), acpigen_get_current(ctx) - ptr);
ut_asserteq_str(TEST_STRING, (char *)ptr);
free_context(&ctx);
return 0;
}
DM_TEST(dm_test_acpi_emit_string, 0);
/* Test emitting an interrupt descriptor */
static int dm_test_acpi_interrupt(struct unit_test_state *uts)
{
struct acpi_ctx *ctx;
struct udevice *dev;
struct irq irq;
u8 *ptr;
ut_assertok(alloc_context(&ctx));
ptr = acpigen_get_current(ctx);
ut_assertok(uclass_first_device_err(UCLASS_TEST_FDT, &dev));
ut_assertok(irq_get_by_index(dev, 0, &irq));
/* See a-test, property interrupts-extended in the device tree */
ut_asserteq(3, acpi_device_write_interrupt_irq(ctx, &irq));
ut_asserteq(9, acpigen_get_current(ctx) - ptr);
ut_asserteq(ACPI_DESCRIPTOR_INTERRUPT, ptr[0]);
ut_asserteq(6, get_unaligned((u16 *)(ptr + 1)));
ut_asserteq(0x19, ptr[3]);
ut_asserteq(1, ptr[4]);
ut_asserteq(3, get_unaligned((u32 *)(ptr + 5)));
free_context(&ctx);
return 0;
}
DM_TEST(dm_test_acpi_interrupt, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
/* Test emitting a GPIO descriptor */
static int dm_test_acpi_gpio(struct unit_test_state *uts)
{
struct gpio_desc desc;
struct acpi_ctx *ctx;
struct udevice *dev;
u8 *ptr;
ut_assertok(alloc_context(&ctx));
ptr = acpigen_get_current(ctx);
ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
ut_asserteq_str("a-test", dev->name);
ut_assertok(gpio_request_by_name(dev, "test-gpios", 1, &desc, 0));
/* This should write GPIO pin 4 (see device tree test.dts ) */
ut_asserteq(4, acpi_device_write_gpio_desc(ctx, &desc));
ut_asserteq(35, acpigen_get_current(ctx) - ptr);
ut_asserteq(ACPI_DESCRIPTOR_GPIO, ptr[0]);
ut_asserteq(32, get_unaligned((u16 *)(ptr + 1)));
ut_asserteq(ACPI_GPIO_REVISION_ID, ptr[3]);
ut_asserteq(ACPI_GPIO_TYPE_IO, ptr[4]);
ut_asserteq(1, get_unaligned((u16 *)(ptr + 5)));
ut_asserteq(9, get_unaligned((u16 *)(ptr + 7)));
ut_asserteq(ACPI_GPIO_PULL_UP, ptr[9]);
ut_asserteq(1234, get_unaligned((u16 *)(ptr + 10)));
ut_asserteq(0, get_unaligned((u16 *)(ptr + 12)));
ut_asserteq(23, get_unaligned((u16 *)(ptr + 14)));
ut_asserteq(0, ptr[16]);
ut_asserteq(25, get_unaligned((u16 *)(ptr + 17)));
ut_asserteq(35, get_unaligned((u16 *)(ptr + 19)));
ut_asserteq(0, get_unaligned((u16 *)(ptr + 21)));
/* pin0 */
ut_asserteq(4, get_unaligned((u16 *)(ptr + 23)));
ut_asserteq_str("\\_SB.PINC", (char *)ptr + 25);
free_context(&ctx);
return 0;
}
DM_TEST(dm_test_acpi_gpio, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
/* Test emitting a GPIO descriptor with an interrupt */
static int dm_test_acpi_gpio_irq(struct unit_test_state *uts)
{
struct gpio_desc desc;
struct acpi_ctx *ctx;
struct udevice *dev;
u8 *ptr;
ut_assertok(alloc_context(&ctx));
ptr = acpigen_get_current(ctx);
ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
ut_asserteq_str("a-test", dev->name);
ut_assertok(gpio_request_by_name(dev, "test2-gpios", 2, &desc, 0));
/* This should write GPIO pin 6 (see device tree test.dts ) */
ut_asserteq(6, acpi_device_write_gpio_desc(ctx, &desc));
ut_asserteq(35, acpigen_get_current(ctx) - ptr);
ut_asserteq(ACPI_DESCRIPTOR_GPIO, ptr[0]);
ut_asserteq(32, get_unaligned((u16 *)(ptr + 1)));
ut_asserteq(ACPI_GPIO_REVISION_ID, ptr[3]);
ut_asserteq(ACPI_GPIO_TYPE_INTERRUPT, ptr[4]);
ut_asserteq(1, get_unaligned((u16 *)(ptr + 5)));
ut_asserteq(29, get_unaligned((u16 *)(ptr + 7)));
ut_asserteq(ACPI_GPIO_PULL_DOWN, ptr[9]);
ut_asserteq(0, get_unaligned((u16 *)(ptr + 10)));
ut_asserteq(4321, get_unaligned((u16 *)(ptr + 12)));
ut_asserteq(23, get_unaligned((u16 *)(ptr + 14)));
ut_asserteq(0, ptr[16]);
ut_asserteq(25, get_unaligned((u16 *)(ptr + 17)));
ut_asserteq(35, get_unaligned((u16 *)(ptr + 19)));
ut_asserteq(0, get_unaligned((u16 *)(ptr + 21)));
/* pin0 */
ut_asserteq(6, get_unaligned((u16 *)(ptr + 23)));
ut_asserteq_str("\\_SB.PINC", (char *)ptr + 25);
free_context(&ctx);
return 0;
}
DM_TEST(dm_test_acpi_gpio_irq, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
/* Test emitting either a GPIO or interrupt descriptor */
static int dm_test_acpi_interrupt_or_gpio(struct unit_test_state *uts)
{
struct acpi_ctx *ctx;
struct udevice *dev;
u8 *ptr;
ut_assertok(alloc_context(&ctx));
ptr = acpigen_get_current(ctx);
/* This should produce an interrupt, even though it also has a GPIO */
ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
ut_asserteq_str("a-test", dev->name);
ut_asserteq(3, acpi_device_write_interrupt_or_gpio(ctx, dev,
"test2-gpios"));
ut_asserteq(ACPI_DESCRIPTOR_INTERRUPT, ptr[0]);
/* This has no interrupt so should produce a GPIO */
ptr = ctx->current;
ut_assertok(uclass_find_first_device(UCLASS_PANEL_BACKLIGHT, &dev));
ut_asserteq(1, acpi_device_write_interrupt_or_gpio(ctx, dev,
"enable-gpios"));
ut_asserteq(ACPI_DESCRIPTOR_GPIO, ptr[0]);
/* This one has neither */
ptr = acpigen_get_current(ctx);
ut_assertok(uclass_get_device_by_seq(UCLASS_TEST_FDT, 3, &dev));
ut_asserteq_str("b-test", dev->name);
ut_asserteq(-ENOENT,
acpi_device_write_interrupt_or_gpio(ctx, dev,
"enable-gpios"));
free_context(&ctx);
return 0;
}
DM_TEST(dm_test_acpi_interrupt_or_gpio,
DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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