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u-boot-brain/test/dm/acpigen.c
Simon Glass 83b2bd5a74 acpi: Support writing an integer 
ACPI supports storing integers in various ways. Add a function to handle
this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-07-17 14:32:24 +08:00

480 lines
12 KiB
C
Raw Blame History

// 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"
#define TEST_INT8 0x7d
#define TEST_INT16 0x2345
#define TEST_INT32 0x12345678
#define TEST_INT64 0x4567890123456
static int alloc_context_size(struct acpi_ctx **ctxp, int size)
{
struct acpi_ctx *ctx;
*ctxp = NULL;
ctx = malloc(sizeof(*ctx));
if (!ctx)
return -ENOMEM;
ctx->base = malloc(size);
if (!ctx->base) {
free(ctx);
return -ENOMEM;
}
ctx->ltop = 0;
ctx->current = ctx->base;
*ctxp = ctx;
return 0;
}
static int alloc_context(struct acpi_ctx **ctxp)
{
return alloc_context_size(ctxp, ACPI_CONTEXT_SIZE);
}
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);
/* Test emitting an I2C descriptor */
static int dm_test_acpi_i2c(struct unit_test_state *uts)
{
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_RTC, 0, &dev));
ut_asserteq(0x43, acpi_device_write_i2c_dev(ctx, dev));
ut_asserteq(28, acpigen_get_current(ctx) - ptr);
ut_asserteq(ACPI_DESCRIPTOR_SERIAL_BUS, ptr[0]);
ut_asserteq(25, get_unaligned((u16 *)(ptr + 1)));
ut_asserteq(ACPI_I2C_SERIAL_BUS_REVISION_ID, ptr[3]);
ut_asserteq(0, ptr[4]);
ut_asserteq(ACPI_SERIAL_BUS_TYPE_I2C, ptr[5]);
ut_asserteq(0, get_unaligned((u16 *)(ptr + 7)));
ut_asserteq(ACPI_I2C_TYPE_SPECIFIC_REVISION_ID, ptr[9]);
ut_asserteq(6, get_unaligned((u16 *)(ptr + 10)));
ut_asserteq(100000, get_unaligned((u32 *)(ptr + 12)));
ut_asserteq(0x43, get_unaligned((u16 *)(ptr + 16)));
ut_asserteq_str("\\_SB.I2C0", (char *)ptr + 18);
free_context(&ctx);
return 0;
}
DM_TEST(dm_test_acpi_i2c, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
/* Test emitting a SPI descriptor */
static int dm_test_acpi_spi(struct unit_test_state *uts)
{
struct acpi_ctx *ctx;
struct udevice *dev;
u8 *ptr;
ut_assertok(alloc_context(&ctx));
ptr = acpigen_get_current(ctx);
ut_assertok(uclass_first_device_err(UCLASS_SPI_FLASH, &dev));
ut_assertok(acpi_device_write_spi_dev(ctx, dev));
ut_asserteq(31, acpigen_get_current(ctx) - ptr);
ut_asserteq(ACPI_DESCRIPTOR_SERIAL_BUS, ptr[0]);
ut_asserteq(28, get_unaligned((u16 *)(ptr + 1)));
ut_asserteq(ACPI_SPI_SERIAL_BUS_REVISION_ID, ptr[3]);
ut_asserteq(0, ptr[4]);
ut_asserteq(ACPI_SERIAL_BUS_TYPE_SPI, ptr[5]);
ut_asserteq(2, ptr[6]);
ut_asserteq(0, get_unaligned((u16 *)(ptr + 7)));
ut_asserteq(ACPI_SPI_TYPE_SPECIFIC_REVISION_ID, ptr[9]);
ut_asserteq(9, get_unaligned((u16 *)(ptr + 10)));
ut_asserteq(40000000, get_unaligned((u32 *)(ptr + 12)));
ut_asserteq(8, ptr[16]);
ut_asserteq(0, ptr[17]);
ut_asserteq(0, ptr[18]);
ut_asserteq(0, get_unaligned((u16 *)(ptr + 19)));
ut_asserteq_str("\\_SB.SPI0", (char *)ptr + 21);
free_context(&ctx);
return 0;
}
DM_TEST(dm_test_acpi_spi, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
/**
* get_length() - decode a three-byte length field
*
* @ptr: Length encoded as per ACPI
* @return decoded length, or -EINVAL on error
*/
static int get_length(u8 *ptr)
{
if (!(*ptr & 0x80))
return -EINVAL;
return (*ptr & 0xf) | ptr[1] << 4 | ptr[2] << 12;
}
/* Test emitting a length */
static int dm_test_acpi_len(struct unit_test_state *uts)
{
const int size = 0xc0000;
struct acpi_ctx *ctx;
u8 *ptr;
int i;
ut_assertok(alloc_context_size(&ctx, size));
ptr = acpigen_get_current(ctx);
/* Write a byte and a 3-byte length */
acpigen_write_len_f(ctx);
acpigen_emit_byte(ctx, 0x23);
acpigen_pop_len(ctx);
ut_asserteq(1 + 3, get_length(ptr));
/* Write 200 bytes so we need two length bytes */
ptr = ctx->current;
acpigen_write_len_f(ctx);
for (i = 0; i < 200; i++)
acpigen_emit_byte(ctx, 0x23);
acpigen_pop_len(ctx);
ut_asserteq(200 + 3, get_length(ptr));
/* Write 40KB so we need three length bytes */
ptr = ctx->current;
acpigen_write_len_f(ctx);
for (i = 0; i < 40000; i++)
acpigen_emit_byte(ctx, 0x23);
acpigen_pop_len(ctx);
ut_asserteq(40000 + 3, get_length(ptr));
free_context(&ctx);
return 0;
}
DM_TEST(dm_test_acpi_len, 0);
/* Test writing a package */
static int dm_test_acpi_package(struct unit_test_state *uts)
{
struct acpi_ctx *ctx;
char *num_elements;
u8 *ptr;
ut_assertok(alloc_context(&ctx));
ptr = acpigen_get_current(ctx);
num_elements = acpigen_write_package(ctx, 3);
ut_asserteq_ptr(num_elements, ptr + 4);
/* For ease of testing, just emit a byte, not valid package contents */
acpigen_emit_byte(ctx, 0x23);
acpigen_pop_len(ctx);
ut_asserteq(PACKAGE_OP, ptr[0]);
ut_asserteq(5, get_length(ptr + 1));
ut_asserteq(3, ptr[4]);
free_context(&ctx);
return 0;
}
DM_TEST(dm_test_acpi_package, 0);
/* Test writing an integer */
static int dm_test_acpi_integer(struct unit_test_state *uts)
{
struct acpi_ctx *ctx;
u8 *ptr;
ut_assertok(alloc_context(&ctx));
ptr = acpigen_get_current(ctx);
acpigen_write_integer(ctx, 0);
acpigen_write_integer(ctx, 1);
acpigen_write_integer(ctx, TEST_INT8);
acpigen_write_integer(ctx, TEST_INT16);
acpigen_write_integer(ctx, TEST_INT32);
acpigen_write_integer(ctx, TEST_INT64);
ut_asserteq(6 + 1 + 2 + 4 + 8, acpigen_get_current(ctx) - ptr);
ut_asserteq(ZERO_OP, ptr[0]);
ut_asserteq(ONE_OP, ptr[1]);
ut_asserteq(BYTE_PREFIX, ptr[2]);
ut_asserteq(TEST_INT8, ptr[3]);
ut_asserteq(WORD_PREFIX, ptr[4]);
ut_asserteq(TEST_INT16, get_unaligned((u16 *)(ptr + 5)));
ut_asserteq(DWORD_PREFIX, ptr[7]);
ut_asserteq(TEST_INT32, get_unaligned((u32 *)(ptr + 8)));
ut_asserteq(QWORD_PREFIX, ptr[12]);
ut_asserteq_64(TEST_INT64, get_unaligned((u64 *)(ptr + 13)));
free_context(&ctx);
return 0;
}
DM_TEST(dm_test_acpi_integer, 0);
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