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3df33bda5c
ACPI supports storing a simple null-terminated string. Add support for 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>
507 lines
13 KiB
C
507 lines
13 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Tests for ACPI code generation
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*
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* Copyright 2019 Google LLC
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <common.h>
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#include <dm.h>
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#include <irq.h>
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#include <malloc.h>
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#include <acpi/acpigen.h>
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#include <acpi/acpi_device.h>
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#include <asm/gpio.h>
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#include <asm/unaligned.h>
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#include <dm/acpi.h>
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#include <dm/test.h>
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#include <dm/uclass-internal.h>
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#include <test/ut.h>
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/* Maximum size of the ACPI context needed for most tests */
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#define ACPI_CONTEXT_SIZE 150
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#define TEST_STRING "frogmore"
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#define TEST_STRING2 "ranch"
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#define TEST_STREAM2 "\xfa\xde"
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#define TEST_INT8 0x7d
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#define TEST_INT16 0x2345
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#define TEST_INT32 0x12345678
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#define TEST_INT64 0x4567890123456
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static int alloc_context_size(struct acpi_ctx **ctxp, int size)
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{
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struct acpi_ctx *ctx;
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*ctxp = NULL;
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ctx = malloc(sizeof(*ctx));
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if (!ctx)
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return -ENOMEM;
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ctx->base = malloc(size);
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if (!ctx->base) {
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free(ctx);
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return -ENOMEM;
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}
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ctx->ltop = 0;
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ctx->current = ctx->base;
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*ctxp = ctx;
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return 0;
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}
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static int alloc_context(struct acpi_ctx **ctxp)
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{
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return alloc_context_size(ctxp, ACPI_CONTEXT_SIZE);
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}
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static void free_context(struct acpi_ctx **ctxp)
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{
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free((*ctxp)->base);
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free(*ctxp);
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*ctxp = NULL;
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}
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/* Test emitting simple types and acpigen_get_current() */
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static int dm_test_acpi_emit_simple(struct unit_test_state *uts)
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{
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struct acpi_ctx *ctx;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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acpigen_emit_byte(ctx, 0x23);
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ut_asserteq(1, acpigen_get_current(ctx) - ptr);
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ut_asserteq(0x23, *(u8 *)ptr);
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acpigen_emit_word(ctx, 0x1234);
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ut_asserteq(3, acpigen_get_current(ctx) - ptr);
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ut_asserteq(0x1234, get_unaligned((u16 *)(ptr + 1)));
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acpigen_emit_dword(ctx, 0x87654321);
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ut_asserteq(7, acpigen_get_current(ctx) - ptr);
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ut_asserteq(0x87654321, get_unaligned((u32 *)(ptr + 3)));
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_emit_simple, 0);
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/* Test emitting a stream */
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static int dm_test_acpi_emit_stream(struct unit_test_state *uts)
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{
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struct acpi_ctx *ctx;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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acpigen_emit_stream(ctx, TEST_STREAM2, 2);
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ut_asserteq(2, acpigen_get_current(ctx) - ptr);
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ut_asserteq((u8)TEST_STREAM2[0], ptr[0]);
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ut_asserteq((u8)TEST_STREAM2[1], ptr[1]);
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_emit_stream, 0);
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/* Test emitting a string */
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static int dm_test_acpi_emit_string(struct unit_test_state *uts)
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{
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struct acpi_ctx *ctx;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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acpigen_emit_string(ctx, TEST_STRING);
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ut_asserteq(sizeof(TEST_STRING), acpigen_get_current(ctx) - ptr);
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ut_asserteq_str(TEST_STRING, (char *)ptr);
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_emit_string, 0);
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/* Test emitting an interrupt descriptor */
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static int dm_test_acpi_interrupt(struct unit_test_state *uts)
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{
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struct acpi_ctx *ctx;
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struct udevice *dev;
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struct irq irq;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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ut_assertok(uclass_first_device_err(UCLASS_TEST_FDT, &dev));
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ut_assertok(irq_get_by_index(dev, 0, &irq));
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/* See a-test, property interrupts-extended in the device tree */
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ut_asserteq(3, acpi_device_write_interrupt_irq(ctx, &irq));
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ut_asserteq(9, acpigen_get_current(ctx) - ptr);
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ut_asserteq(ACPI_DESCRIPTOR_INTERRUPT, ptr[0]);
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ut_asserteq(6, get_unaligned((u16 *)(ptr + 1)));
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ut_asserteq(0x19, ptr[3]);
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ut_asserteq(1, ptr[4]);
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ut_asserteq(3, get_unaligned((u32 *)(ptr + 5)));
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_interrupt, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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/* Test emitting a GPIO descriptor */
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static int dm_test_acpi_gpio(struct unit_test_state *uts)
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{
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struct gpio_desc desc;
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struct acpi_ctx *ctx;
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struct udevice *dev;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
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ut_asserteq_str("a-test", dev->name);
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ut_assertok(gpio_request_by_name(dev, "test-gpios", 1, &desc, 0));
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/* This should write GPIO pin 4 (see device tree test.dts ) */
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ut_asserteq(4, acpi_device_write_gpio_desc(ctx, &desc));
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ut_asserteq(35, acpigen_get_current(ctx) - ptr);
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ut_asserteq(ACPI_DESCRIPTOR_GPIO, ptr[0]);
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ut_asserteq(32, get_unaligned((u16 *)(ptr + 1)));
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ut_asserteq(ACPI_GPIO_REVISION_ID, ptr[3]);
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ut_asserteq(ACPI_GPIO_TYPE_IO, ptr[4]);
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ut_asserteq(1, get_unaligned((u16 *)(ptr + 5)));
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ut_asserteq(9, get_unaligned((u16 *)(ptr + 7)));
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ut_asserteq(ACPI_GPIO_PULL_UP, ptr[9]);
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ut_asserteq(1234, get_unaligned((u16 *)(ptr + 10)));
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ut_asserteq(0, get_unaligned((u16 *)(ptr + 12)));
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ut_asserteq(23, get_unaligned((u16 *)(ptr + 14)));
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ut_asserteq(0, ptr[16]);
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ut_asserteq(25, get_unaligned((u16 *)(ptr + 17)));
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ut_asserteq(35, get_unaligned((u16 *)(ptr + 19)));
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ut_asserteq(0, get_unaligned((u16 *)(ptr + 21)));
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/* pin0 */
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ut_asserteq(4, get_unaligned((u16 *)(ptr + 23)));
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ut_asserteq_str("\\_SB.PINC", (char *)ptr + 25);
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_gpio, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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/* Test emitting a GPIO descriptor with an interrupt */
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static int dm_test_acpi_gpio_irq(struct unit_test_state *uts)
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{
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struct gpio_desc desc;
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struct acpi_ctx *ctx;
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struct udevice *dev;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
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ut_asserteq_str("a-test", dev->name);
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ut_assertok(gpio_request_by_name(dev, "test2-gpios", 2, &desc, 0));
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/* This should write GPIO pin 6 (see device tree test.dts ) */
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ut_asserteq(6, acpi_device_write_gpio_desc(ctx, &desc));
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ut_asserteq(35, acpigen_get_current(ctx) - ptr);
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ut_asserteq(ACPI_DESCRIPTOR_GPIO, ptr[0]);
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ut_asserteq(32, get_unaligned((u16 *)(ptr + 1)));
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ut_asserteq(ACPI_GPIO_REVISION_ID, ptr[3]);
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ut_asserteq(ACPI_GPIO_TYPE_INTERRUPT, ptr[4]);
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ut_asserteq(1, get_unaligned((u16 *)(ptr + 5)));
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ut_asserteq(29, get_unaligned((u16 *)(ptr + 7)));
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ut_asserteq(ACPI_GPIO_PULL_DOWN, ptr[9]);
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ut_asserteq(0, get_unaligned((u16 *)(ptr + 10)));
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ut_asserteq(4321, get_unaligned((u16 *)(ptr + 12)));
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ut_asserteq(23, get_unaligned((u16 *)(ptr + 14)));
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ut_asserteq(0, ptr[16]);
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ut_asserteq(25, get_unaligned((u16 *)(ptr + 17)));
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ut_asserteq(35, get_unaligned((u16 *)(ptr + 19)));
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ut_asserteq(0, get_unaligned((u16 *)(ptr + 21)));
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/* pin0 */
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ut_asserteq(6, get_unaligned((u16 *)(ptr + 23)));
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ut_asserteq_str("\\_SB.PINC", (char *)ptr + 25);
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_gpio_irq, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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/* Test emitting either a GPIO or interrupt descriptor */
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static int dm_test_acpi_interrupt_or_gpio(struct unit_test_state *uts)
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{
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struct acpi_ctx *ctx;
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struct udevice *dev;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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/* This should produce an interrupt, even though it also has a GPIO */
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ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
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ut_asserteq_str("a-test", dev->name);
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ut_asserteq(3, acpi_device_write_interrupt_or_gpio(ctx, dev,
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"test2-gpios"));
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ut_asserteq(ACPI_DESCRIPTOR_INTERRUPT, ptr[0]);
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/* This has no interrupt so should produce a GPIO */
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ptr = ctx->current;
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ut_assertok(uclass_find_first_device(UCLASS_PANEL_BACKLIGHT, &dev));
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ut_asserteq(1, acpi_device_write_interrupt_or_gpio(ctx, dev,
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"enable-gpios"));
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ut_asserteq(ACPI_DESCRIPTOR_GPIO, ptr[0]);
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/* This one has neither */
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ptr = acpigen_get_current(ctx);
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ut_assertok(uclass_get_device_by_seq(UCLASS_TEST_FDT, 3, &dev));
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ut_asserteq_str("b-test", dev->name);
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ut_asserteq(-ENOENT,
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acpi_device_write_interrupt_or_gpio(ctx, dev,
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"enable-gpios"));
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_interrupt_or_gpio,
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DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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/* Test emitting an I2C descriptor */
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static int dm_test_acpi_i2c(struct unit_test_state *uts)
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{
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struct acpi_ctx *ctx;
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struct udevice *dev;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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ut_assertok(uclass_get_device(UCLASS_RTC, 0, &dev));
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ut_asserteq(0x43, acpi_device_write_i2c_dev(ctx, dev));
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ut_asserteq(28, acpigen_get_current(ctx) - ptr);
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ut_asserteq(ACPI_DESCRIPTOR_SERIAL_BUS, ptr[0]);
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ut_asserteq(25, get_unaligned((u16 *)(ptr + 1)));
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ut_asserteq(ACPI_I2C_SERIAL_BUS_REVISION_ID, ptr[3]);
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ut_asserteq(0, ptr[4]);
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ut_asserteq(ACPI_SERIAL_BUS_TYPE_I2C, ptr[5]);
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ut_asserteq(0, get_unaligned((u16 *)(ptr + 7)));
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ut_asserteq(ACPI_I2C_TYPE_SPECIFIC_REVISION_ID, ptr[9]);
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ut_asserteq(6, get_unaligned((u16 *)(ptr + 10)));
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ut_asserteq(100000, get_unaligned((u32 *)(ptr + 12)));
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ut_asserteq(0x43, get_unaligned((u16 *)(ptr + 16)));
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ut_asserteq_str("\\_SB.I2C0", (char *)ptr + 18);
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_i2c, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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/* Test emitting a SPI descriptor */
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static int dm_test_acpi_spi(struct unit_test_state *uts)
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{
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struct acpi_ctx *ctx;
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struct udevice *dev;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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ut_assertok(uclass_first_device_err(UCLASS_SPI_FLASH, &dev));
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ut_assertok(acpi_device_write_spi_dev(ctx, dev));
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ut_asserteq(31, acpigen_get_current(ctx) - ptr);
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ut_asserteq(ACPI_DESCRIPTOR_SERIAL_BUS, ptr[0]);
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ut_asserteq(28, get_unaligned((u16 *)(ptr + 1)));
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ut_asserteq(ACPI_SPI_SERIAL_BUS_REVISION_ID, ptr[3]);
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ut_asserteq(0, ptr[4]);
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ut_asserteq(ACPI_SERIAL_BUS_TYPE_SPI, ptr[5]);
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ut_asserteq(2, ptr[6]);
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ut_asserteq(0, get_unaligned((u16 *)(ptr + 7)));
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ut_asserteq(ACPI_SPI_TYPE_SPECIFIC_REVISION_ID, ptr[9]);
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ut_asserteq(9, get_unaligned((u16 *)(ptr + 10)));
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ut_asserteq(40000000, get_unaligned((u32 *)(ptr + 12)));
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ut_asserteq(8, ptr[16]);
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ut_asserteq(0, ptr[17]);
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ut_asserteq(0, ptr[18]);
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ut_asserteq(0, get_unaligned((u16 *)(ptr + 19)));
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ut_asserteq_str("\\_SB.SPI0", (char *)ptr + 21);
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_spi, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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/**
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* get_length() - decode a three-byte length field
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*
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* @ptr: Length encoded as per ACPI
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* @return decoded length, or -EINVAL on error
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*/
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static int get_length(u8 *ptr)
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{
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if (!(*ptr & 0x80))
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return -EINVAL;
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return (*ptr & 0xf) | ptr[1] << 4 | ptr[2] << 12;
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}
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/* Test emitting a length */
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static int dm_test_acpi_len(struct unit_test_state *uts)
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{
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const int size = 0xc0000;
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struct acpi_ctx *ctx;
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u8 *ptr;
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int i;
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ut_assertok(alloc_context_size(&ctx, size));
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ptr = acpigen_get_current(ctx);
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/* Write a byte and a 3-byte length */
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acpigen_write_len_f(ctx);
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acpigen_emit_byte(ctx, 0x23);
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acpigen_pop_len(ctx);
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ut_asserteq(1 + 3, get_length(ptr));
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/* Write 200 bytes so we need two length bytes */
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ptr = ctx->current;
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acpigen_write_len_f(ctx);
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for (i = 0; i < 200; i++)
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acpigen_emit_byte(ctx, 0x23);
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acpigen_pop_len(ctx);
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ut_asserteq(200 + 3, get_length(ptr));
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/* Write 40KB so we need three length bytes */
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ptr = ctx->current;
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acpigen_write_len_f(ctx);
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for (i = 0; i < 40000; i++)
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acpigen_emit_byte(ctx, 0x23);
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acpigen_pop_len(ctx);
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ut_asserteq(40000 + 3, get_length(ptr));
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_len, 0);
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/* Test writing a package */
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static int dm_test_acpi_package(struct unit_test_state *uts)
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{
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struct acpi_ctx *ctx;
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char *num_elements;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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num_elements = acpigen_write_package(ctx, 3);
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ut_asserteq_ptr(num_elements, ptr + 4);
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/* For ease of testing, just emit a byte, not valid package contents */
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acpigen_emit_byte(ctx, 0x23);
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acpigen_pop_len(ctx);
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ut_asserteq(PACKAGE_OP, ptr[0]);
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ut_asserteq(5, get_length(ptr + 1));
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ut_asserteq(3, ptr[4]);
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_package, 0);
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/* Test writing an integer */
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static int dm_test_acpi_integer(struct unit_test_state *uts)
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{
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struct acpi_ctx *ctx;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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acpigen_write_integer(ctx, 0);
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acpigen_write_integer(ctx, 1);
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acpigen_write_integer(ctx, TEST_INT8);
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acpigen_write_integer(ctx, TEST_INT16);
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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);
|
|
|
|
/* Test writing a string */
|
|
static int dm_test_acpi_string(struct unit_test_state *uts)
|
|
{
|
|
struct acpi_ctx *ctx;
|
|
u8 *ptr;
|
|
|
|
ut_assertok(alloc_context(&ctx));
|
|
|
|
ptr = acpigen_get_current(ctx);
|
|
|
|
acpigen_write_string(ctx, TEST_STRING);
|
|
acpigen_write_string(ctx, TEST_STRING2);
|
|
|
|
ut_asserteq(2 + sizeof(TEST_STRING) + sizeof(TEST_STRING2),
|
|
acpigen_get_current(ctx) - ptr);
|
|
ut_asserteq(STRING_PREFIX, ptr[0]);
|
|
ut_asserteq_str(TEST_STRING, (char *)ptr + 1);
|
|
ptr += 1 + sizeof(TEST_STRING);
|
|
ut_asserteq(STRING_PREFIX, ptr[0]);
|
|
ut_asserteq_str(TEST_STRING2, (char *)ptr + 1);
|
|
|
|
free_context(&ctx);
|
|
|
|
return 0;
|
|
}
|
|
DM_TEST(dm_test_acpi_string, 0);
|