diff options
Diffstat (limited to 'src/arch/x86/acpi_device.c')
| -rw-r--r-- | src/arch/x86/acpi_device.c | 961 |
1 files changed, 0 insertions, 961 deletions
diff --git a/src/arch/x86/acpi_device.c b/src/arch/x86/acpi_device.c deleted file mode 100644 index 9f63200121..0000000000 --- a/src/arch/x86/acpi_device.c +++ /dev/null @@ -1,961 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* This file is part of the coreboot project. */ - -#include <assert.h> -#include <string.h> -#include <arch/acpi.h> -#include <arch/acpi_device.h> -#include <arch/acpigen.h> -#include <device/device.h> -#include <device/path.h> -#include <stdlib.h> -#include <crc_byte.h> - -#if CONFIG(GENERIC_GPIO_LIB) -#include <gpio.h> -#endif - -#define ACPI_DP_UUID "daffd814-6eba-4d8c-8a91-bc9bbf4aa301" -#define ACPI_DP_CHILD_UUID "dbb8e3e6-5886-4ba6-8795-1319f52a966b" - -/* Write empty word value and return pointer to it */ -static void *acpi_device_write_zero_len(void) -{ - char *p = acpigen_get_current(); - acpigen_emit_word(0); - return p; -} - -/* Fill in length value from start to current at specified location */ -static void acpi_device_fill_from_len(char *ptr, char *start) -{ - uint16_t len = acpigen_get_current() - start; - ptr[0] = len & 0xff; - ptr[1] = (len >> 8) & 0xff; -} - -/* - * Fill in the length field with the value calculated from after - * the 16bit field to acpigen current as this length value does - * not include the length field itself. - */ -static void acpi_device_fill_len(void *ptr) -{ - acpi_device_fill_from_len(ptr, ptr + sizeof(uint16_t)); -} - -/* Locate and return the ACPI name for this device */ -const char *acpi_device_name(const struct device *dev) -{ - const struct device *pdev = dev; - const char *name = NULL; - - if (!dev) - return NULL; - - /* Check for device specific handler */ - if (dev->ops->acpi_name) - return dev->ops->acpi_name(dev); - - /* Walk up the tree to find if any parent can identify this device */ - while (pdev->bus) { - pdev = pdev->bus->dev; - if (!pdev) - break; - if (pdev->path.type == DEVICE_PATH_ROOT) - break; - if (pdev->ops && pdev->ops->acpi_name) - name = pdev->ops->acpi_name(dev); - if (name) - return name; - } - - return NULL; -} - -/* Locate and return the ACPI _HID (Hardware ID) for this device */ -const char *acpi_device_hid(const struct device *dev) -{ - if (!dev) - return NULL; - - /* Check for device specific handler */ - if (dev->ops->acpi_hid) - return dev->ops->acpi_hid(dev); - - /* - * Don't walk up the tree to find any parent that can identify this device, as - * PNP devices are hard to identify. - */ - - return NULL; -} - -/* - * Generate unique ID based on the ACPI path. - * Collisions on the same _HID are possible but very unlikely. - */ -uint32_t acpi_device_uid(const struct device *dev) -{ - const char *path = acpi_device_path(dev); - if (!path) - return 0; - - return CRC(path, strlen(path), crc32_byte); -} - -/* Recursive function to find the root device and print a path from there */ -static ssize_t acpi_device_path_fill(const struct device *dev, char *buf, - size_t buf_len, size_t cur) -{ - const char *name = acpi_device_name(dev); - ssize_t next = 0; - - if (!name) - return -1; - - /* - * Make sure this name segment will fit, including the path segment - * separator and possible NUL terminator if this is the last segment. - */ - if (!dev || (cur + strlen(name) + 2) > buf_len) - return cur; - - /* Walk up the tree to the root device */ - if (dev->path.type != DEVICE_PATH_ROOT && dev->bus && dev->bus->dev) - next = acpi_device_path_fill(dev->bus->dev, buf, buf_len, cur); - if (next < 0) - return next; - - /* Fill in the path from the root device */ - next += snprintf(buf + next, buf_len - next, "%s%s", - (dev->path.type == DEVICE_PATH_ROOT - || (strlen(name) == 0)) ? - "" : ".", name); - - return next; -} - -/* - * Warning: just as with dev_path() this uses a static buffer - * so should not be called mulitple times in one statement - */ -const char *acpi_device_path(const struct device *dev) -{ - static char buf[DEVICE_PATH_MAX] = {}; - - if (!dev) - return NULL; - - if (acpi_device_path_fill(dev, buf, sizeof(buf), 0) <= 0) - return NULL; - - return buf; -} - -/* Return the path of the parent device as the ACPI Scope for this device */ -const char *acpi_device_scope(const struct device *dev) -{ - static char buf[DEVICE_PATH_MAX] = {}; - - if (!dev || !dev->bus || !dev->bus->dev) - return NULL; - - if (acpi_device_path_fill(dev->bus->dev, buf, sizeof(buf), 0) <= 0) - return NULL; - - return buf; -} - -/* Concatenate the device path and provided name suffix */ -const char *acpi_device_path_join(const struct device *dev, const char *name) -{ - static char buf[DEVICE_PATH_MAX] = {}; - ssize_t len; - - if (!dev) - return NULL; - - /* Build the path of this device */ - len = acpi_device_path_fill(dev, buf, sizeof(buf), 0); - if (len <= 0) - return NULL; - - /* Ensure there is room for the added name, separator, and NUL */ - if ((len + strlen(name) + 2) > sizeof(buf)) - return NULL; - snprintf(buf + len, sizeof(buf) - len, ".%s", name); - - return buf; -} - -int acpi_device_status(const struct device *dev) -{ - if (!dev->enabled) - return ACPI_STATUS_DEVICE_ALL_OFF; - if (dev->hidden) - return ACPI_STATUS_DEVICE_HIDDEN_ON; - return ACPI_STATUS_DEVICE_ALL_ON; -} - - -/* Write the unique _UID based on ACPI device path. */ -void acpi_device_write_uid(const struct device *dev) -{ - acpigen_write_name_integer("_UID", acpi_device_uid(dev)); -} - -/* ACPI 6.1 section 6.4.3.6: Extended Interrupt Descriptor */ -void acpi_device_write_interrupt(const struct acpi_irq *irq) -{ - void *desc_length; - uint8_t flags; - - if (!irq || !irq->pin) - return; - - /* This is supported by GpioInt() but not Interrupt() */ - if (irq->polarity == ACPI_IRQ_ACTIVE_BOTH) - return; - - /* Byte 0: Descriptor Type */ - acpigen_emit_byte(ACPI_DESCRIPTOR_INTERRUPT); - - /* Byte 1-2: Length (filled in later) */ - desc_length = acpi_device_write_zero_len(); - - /* - * Byte 3: Flags - * [7:5]: Reserved - * [4]: Wake (0=NO_WAKE 1=WAKE) - * [3]: Sharing (0=EXCLUSIVE 1=SHARED) - * [2]: Polarity (0=HIGH 1=LOW) - * [1]: Mode (0=LEVEL 1=EDGE) - * [0]: Resource (0=PRODUCER 1=CONSUMER) - */ - flags = 1 << 0; /* ResourceConsumer */ - if (irq->mode == ACPI_IRQ_EDGE_TRIGGERED) - flags |= 1 << 1; - if (irq->polarity == ACPI_IRQ_ACTIVE_LOW) - flags |= 1 << 2; - if (irq->shared == ACPI_IRQ_SHARED) - flags |= 1 << 3; - if (irq->wake == ACPI_IRQ_WAKE) - flags |= 1 << 4; - acpigen_emit_byte(flags); - - /* Byte 4: Interrupt Table Entry Count */ - acpigen_emit_byte(1); - - /* Byte 5-8: Interrupt Number */ - acpigen_emit_dword(irq->pin); - - /* Fill in Descriptor Length (account for len word) */ - acpi_device_fill_len(desc_length); -} - -/* ACPI 6.1 section 6.4.3.8.1 - GPIO Interrupt or I/O */ -void acpi_device_write_gpio(const struct acpi_gpio *gpio) -{ - void *start, *desc_length; - void *pin_table_offset, *vendor_data_offset, *resource_offset; - uint16_t flags = 0; - int pin; - - if (!gpio || gpio->type > ACPI_GPIO_TYPE_IO) - return; - - start = acpigen_get_current(); - - /* Byte 0: Descriptor Type */ - acpigen_emit_byte(ACPI_DESCRIPTOR_GPIO); - - /* Byte 1-2: Length (fill in later) */ - desc_length = acpi_device_write_zero_len(); - - /* Byte 3: Revision ID */ - acpigen_emit_byte(ACPI_GPIO_REVISION_ID); - - /* Byte 4: GpioIo or GpioInt */ - acpigen_emit_byte(gpio->type); - - /* - * Byte 5-6: General Flags - * [15:1]: 0 => Reserved - * [0]: 1 => ResourceConsumer - */ - acpigen_emit_word(1 << 0); - - switch (gpio->type) { - case ACPI_GPIO_TYPE_INTERRUPT: - /* - * Byte 7-8: GPIO Interrupt Flags - * [15:5]: 0 => Reserved - * [4]: Wake (0=NO_WAKE 1=WAKE) - * [3]: Sharing (0=EXCLUSIVE 1=SHARED) - * [2:1]: Polarity (0=HIGH 1=LOW 2=BOTH) - * [0]: Mode (0=LEVEL 1=EDGE) - */ - if (gpio->irq.mode == ACPI_IRQ_EDGE_TRIGGERED) - flags |= 1 << 0; - if (gpio->irq.shared == ACPI_IRQ_SHARED) - flags |= 1 << 3; - if (gpio->irq.wake == ACPI_IRQ_WAKE) - flags |= 1 << 4; - - switch (gpio->irq.polarity) { - case ACPI_IRQ_ACTIVE_HIGH: - flags |= 0 << 1; - break; - case ACPI_IRQ_ACTIVE_LOW: - flags |= 1 << 1; - break; - case ACPI_IRQ_ACTIVE_BOTH: - flags |= 2 << 1; - break; - } - break; - - case ACPI_GPIO_TYPE_IO: - /* - * Byte 7-8: GPIO IO Flags - * [15:4]: 0 => Reserved - * [3]: Sharing (0=EXCLUSIVE 1=SHARED) - * [2]: 0 => Reserved - * [1:0]: IO Restriction - * 0 => IoRestrictionNone - * 1 => IoRestrictionInputOnly - * 2 => IoRestrictionOutputOnly - * 3 => IoRestrictionNoneAndPreserve - */ - flags |= gpio->io_restrict & 3; - if (gpio->io_shared) - flags |= 1 << 3; - break; - } - acpigen_emit_word(flags); - - /* - * Byte 9: Pin Configuration - * 0x01 => Default (no configuration applied) - * 0x02 => Pull-up - * 0x03 => Pull-down - * 0x04-0x7F => Reserved - * 0x80-0xff => Vendor defined - */ - acpigen_emit_byte(gpio->pull); - - /* Byte 10-11: Output Drive Strength in 1/100 mA */ - acpigen_emit_word(gpio->output_drive_strength); - - /* Byte 12-13: Debounce Timeout in 1/100 ms */ - acpigen_emit_word(gpio->interrupt_debounce_timeout); - - /* Byte 14-15: Pin Table Offset, relative to start */ - pin_table_offset = acpi_device_write_zero_len(); - - /* Byte 16: Reserved */ - acpigen_emit_byte(0); - - /* Byte 17-18: Resource Source Name Offset, relative to start */ - resource_offset = acpi_device_write_zero_len(); - - /* Byte 19-20: Vendor Data Offset, relative to start */ - vendor_data_offset = acpi_device_write_zero_len(); - - /* Byte 21-22: Vendor Data Length */ - acpigen_emit_word(0); - - /* Fill in Pin Table Offset */ - acpi_device_fill_from_len(pin_table_offset, start); - - /* Pin Table, one word for each pin */ - for (pin = 0; pin < gpio->pin_count; pin++) { - uint16_t acpi_pin = gpio->pins[pin]; -#if CONFIG(GENERIC_GPIO_LIB) - acpi_pin = gpio_acpi_pin(acpi_pin); -#endif - acpigen_emit_word(acpi_pin); - } - - /* Fill in Resource Source Name Offset */ - acpi_device_fill_from_len(resource_offset, start); - - /* Resource Source Name String */ -#if CONFIG(GENERIC_GPIO_LIB) - acpigen_emit_string(gpio->resource ? : gpio_acpi_path(gpio->pins[0])); -#else - acpigen_emit_string(gpio->resource); -#endif - - /* Fill in Vendor Data Offset */ - acpi_device_fill_from_len(vendor_data_offset, start); - - /* Fill in GPIO Descriptor Length (account for len word) */ - acpi_device_fill_len(desc_length); -} - -/* ACPI 6.1 section 6.4.3.8.2.1 - I2cSerialBus() */ -void acpi_device_write_i2c(const struct acpi_i2c *i2c) -{ - void *desc_length, *type_length; - - /* Byte 0: Descriptor Type */ - acpigen_emit_byte(ACPI_DESCRIPTOR_SERIAL_BUS); - - /* Byte 1+2: Length (filled in later) */ - desc_length = acpi_device_write_zero_len(); - - /* Byte 3: Revision ID */ - acpigen_emit_byte(ACPI_I2C_SERIAL_BUS_REVISION_ID); - - /* Byte 4: Resource Source Index is Reserved */ - acpigen_emit_byte(0); - - /* Byte 5: Serial Bus Type is I2C */ - acpigen_emit_byte(ACPI_SERIAL_BUS_TYPE_I2C); - - /* - * Byte 6: Flags - * [7:2]: 0 => Reserved - * [1]: 1 => ResourceConsumer - * [0]: 0 => ControllerInitiated - */ - acpigen_emit_byte(1 << 1); - - /* - * Byte 7-8: Type Specific Flags - * [15:1]: 0 => Reserved - * [0]: 0 => 7bit, 1 => 10bit - */ - acpigen_emit_word(i2c->mode_10bit); - - /* Byte 9: Type Specific Revision ID */ - acpigen_emit_byte(ACPI_I2C_TYPE_SPECIFIC_REVISION_ID); - - /* Byte 10-11: I2C Type Data Length */ - type_length = acpi_device_write_zero_len(); - - /* Byte 12-15: I2C Bus Speed */ - acpigen_emit_dword(i2c->speed); - - /* Byte 16-17: I2C Slave Address */ - acpigen_emit_word(i2c->address); - - /* Fill in Type Data Length */ - acpi_device_fill_len(type_length); - - /* Byte 18+: ResourceSource */ - acpigen_emit_string(i2c->resource); - - /* Fill in I2C Descriptor Length */ - acpi_device_fill_len(desc_length); -} - -/* ACPI 6.1 section 6.4.3.8.2.2 - SpiSerialBus() */ -void acpi_device_write_spi(const struct acpi_spi *spi) -{ - void *desc_length, *type_length; - uint16_t flags = 0; - - /* Byte 0: Descriptor Type */ - acpigen_emit_byte(ACPI_DESCRIPTOR_SERIAL_BUS); - - /* Byte 1+2: Length (filled in later) */ - desc_length = acpi_device_write_zero_len(); - - /* Byte 3: Revision ID */ - acpigen_emit_byte(ACPI_SPI_SERIAL_BUS_REVISION_ID); - - /* Byte 4: Resource Source Index is Reserved */ - acpigen_emit_byte(0); - - /* Byte 5: Serial Bus Type is SPI */ - acpigen_emit_byte(ACPI_SERIAL_BUS_TYPE_SPI); - - /* - * Byte 6: Flags - * [7:2]: 0 => Reserved - * [1]: 1 => ResourceConsumer - * [0]: 0 => ControllerInitiated - */ - acpigen_emit_byte(1 << 1); - - /* - * Byte 7-8: Type Specific Flags - * [15:2]: 0 => Reserved - * [1]: 0 => ActiveLow, 1 => ActiveHigh - * [0]: 0 => FourWire, 1 => ThreeWire - */ - if (spi->wire_mode == SPI_3_WIRE_MODE) - flags |= 1 << 0; - if (spi->device_select_polarity == SPI_POLARITY_HIGH) - flags |= 1 << 1; - acpigen_emit_word(flags); - - /* Byte 9: Type Specific Revision ID */ - acpigen_emit_byte(ACPI_SPI_TYPE_SPECIFIC_REVISION_ID); - - /* Byte 10-11: SPI Type Data Length */ - type_length = acpi_device_write_zero_len(); - - /* Byte 12-15: Connection Speed */ - acpigen_emit_dword(spi->speed); - - /* Byte 16: Data Bit Length */ - acpigen_emit_byte(spi->data_bit_length); - - /* Byte 17: Clock Phase */ - acpigen_emit_byte(spi->clock_phase); - - /* Byte 18: Clock Polarity */ - acpigen_emit_byte(spi->clock_polarity); - - /* Byte 19-20: Device Selection */ - acpigen_emit_word(spi->device_select); - - /* Fill in Type Data Length */ - acpi_device_fill_len(type_length); - - /* Byte 21+: ResourceSource String */ - acpigen_emit_string(spi->resource); - - /* Fill in SPI Descriptor Length */ - acpi_device_fill_len(desc_length); -} - -/* PowerResource() with Enable and/or Reset control */ -void acpi_device_add_power_res(const struct acpi_power_res_params *params) -{ - static const char * const power_res_dev_states[] = { "_PR0", "_PR3" }; - unsigned int reset_gpio = params->reset_gpio ? params->reset_gpio->pins[0] : 0; - unsigned int enable_gpio = params->enable_gpio ? params->enable_gpio->pins[0] : 0; - unsigned int stop_gpio = params->stop_gpio ? params->stop_gpio->pins[0] : 0; - - if (!reset_gpio && !enable_gpio && !stop_gpio) - return; - - /* PowerResource (PRIC, 0, 0) */ - acpigen_write_power_res("PRIC", 0, 0, power_res_dev_states, - ARRAY_SIZE(power_res_dev_states)); - - /* Method (_STA, 0, NotSerialized) { Return (0x1) } */ - acpigen_write_STA(0x1); - - /* Method (_ON, 0, Serialized) */ - acpigen_write_method_serialized("_ON", 0); - if (reset_gpio) - acpigen_enable_tx_gpio(params->reset_gpio); - if (enable_gpio) { - acpigen_enable_tx_gpio(params->enable_gpio); - if (params->enable_delay_ms) - acpigen_write_sleep(params->enable_delay_ms); - } - if (reset_gpio) { - acpigen_disable_tx_gpio(params->reset_gpio); - if (params->reset_delay_ms) - acpigen_write_sleep(params->reset_delay_ms); - } - if (stop_gpio) { - acpigen_disable_tx_gpio(params->stop_gpio); - if (params->stop_delay_ms) - acpigen_write_sleep(params->stop_delay_ms); - } - acpigen_pop_len(); /* _ON method */ - - /* Method (_OFF, 0, Serialized) */ - acpigen_write_method_serialized("_OFF", 0); - if (stop_gpio) { - acpigen_enable_tx_gpio(params->stop_gpio); - if (params->stop_off_delay_ms) - acpigen_write_sleep(params->stop_off_delay_ms); - } - if (reset_gpio) { - acpigen_enable_tx_gpio(params->reset_gpio); - if (params->reset_off_delay_ms) - acpigen_write_sleep(params->reset_off_delay_ms); - } - if (enable_gpio) { - acpigen_disable_tx_gpio(params->enable_gpio); - if (params->enable_off_delay_ms) - acpigen_write_sleep(params->enable_off_delay_ms); - } - acpigen_pop_len(); /* _OFF method */ - - acpigen_pop_len(); /* PowerResource PRIC */ -} - -static void acpi_dp_write_array(const struct acpi_dp *array); -static void acpi_dp_write_value(const struct acpi_dp *prop) -{ - switch (prop->type) { - case ACPI_DP_TYPE_INTEGER: - acpigen_write_integer(prop->integer); - break; - case ACPI_DP_TYPE_STRING: - case ACPI_DP_TYPE_CHILD: - acpigen_write_string(prop->string); - break; - case ACPI_DP_TYPE_REFERENCE: - acpigen_emit_namestring(prop->string); - break; - case ACPI_DP_TYPE_ARRAY: - acpi_dp_write_array(prop->array); - break; - default: - break; - } -} - -/* Package (2) { "prop->name", VALUE } */ -static void acpi_dp_write_property(const struct acpi_dp *prop) -{ - acpigen_write_package(2); - acpigen_write_string(prop->name); - acpi_dp_write_value(prop); - acpigen_pop_len(); -} - -/* Write array of Device Properties */ -static void acpi_dp_write_array(const struct acpi_dp *array) -{ - const struct acpi_dp *dp; - char *pkg_count; - - /* Package element count determined as it is populated */ - pkg_count = acpigen_write_package(0); - - /* - * Only acpi_dp of type DP_TYPE_TABLE is allowed to be an array. - * DP_TYPE_TABLE does not have a value to be written. Thus, start - * the loop from next type in the array. - */ - for (dp = array->next; dp; dp = dp->next) { - acpi_dp_write_value(dp); - (*pkg_count)++; - } - - acpigen_pop_len(); -} - -static void acpi_dp_free(struct acpi_dp *dp) -{ - while (dp) { - struct acpi_dp *p = dp->next; - - switch (dp->type) { - case ACPI_DP_TYPE_CHILD: - acpi_dp_free(dp->child); - break; - case ACPI_DP_TYPE_ARRAY: - acpi_dp_free(dp->array); - break; - default: - break; - } - - free(dp); - dp = p; - } -} - -void acpi_dp_write(struct acpi_dp *table) -{ - struct acpi_dp *dp, *prop; - char *dp_count, *prop_count = NULL; - int child_count = 0; - - if (!table || table->type != ACPI_DP_TYPE_TABLE || !table->next) - return; - - /* Name (name) */ - acpigen_write_name(table->name); - - /* Device Property list starts with the next entry */ - prop = table->next; - - /* Package (DP), default to assuming no properties or children */ - dp_count = acpigen_write_package(0); - - /* Print base properties */ - for (dp = prop; dp; dp = dp->next) { - if (dp->type == ACPI_DP_TYPE_CHILD) { - child_count++; - } else { - /* - * The UUID and package is only added when - * we come across the first property. This - * is to avoid creating a zero-length package - * in situations where there are only children. - */ - if (!prop_count) { - *dp_count += 2; - /* ToUUID (ACPI_DP_UUID) */ - acpigen_write_uuid(ACPI_DP_UUID); - /* - * Package (PROP), element count determined as - * it is populated - */ - prop_count = acpigen_write_package(0); - } - (*prop_count)++; - acpi_dp_write_property(dp); - } - } - if (prop_count) { - /* Package (PROP) length, if a package was written */ - acpigen_pop_len(); - } - - if (child_count) { - /* Update DP package count to 2 or 4 */ - *dp_count += 2; - /* ToUUID (ACPI_DP_CHILD_UUID) */ - acpigen_write_uuid(ACPI_DP_CHILD_UUID); - - /* Print child pointer properties */ - acpigen_write_package(child_count); - - for (dp = prop; dp; dp = dp->next) - if (dp->type == ACPI_DP_TYPE_CHILD) - acpi_dp_write_property(dp); - /* Package (CHILD) length */ - acpigen_pop_len(); - } - - /* Package (DP) length */ - acpigen_pop_len(); - - /* Recursively parse children into separate tables */ - for (dp = prop; dp; dp = dp->next) - if (dp->type == ACPI_DP_TYPE_CHILD) - acpi_dp_write(dp->child); - - /* Clean up */ - acpi_dp_free(table); -} - -static struct acpi_dp *acpi_dp_new(struct acpi_dp *dp, enum acpi_dp_type type, - const char *name) -{ - struct acpi_dp *new; - - new = malloc(sizeof(struct acpi_dp)); - if (!new) - return NULL; - - memset(new, 0, sizeof(*new)); - new->type = type; - new->name = name; - - if (dp) { - /* Add to end of property list */ - while (dp->next) - dp = dp->next; - dp->next = new; - } - - return new; -} - -struct acpi_dp *acpi_dp_new_table(const char *name) -{ - return acpi_dp_new(NULL, ACPI_DP_TYPE_TABLE, name); -} - -size_t acpi_dp_add_property_list(struct acpi_dp *dp, - const struct acpi_dp *property_list, - size_t property_count) -{ - const struct acpi_dp *prop; - size_t i, properties_added = 0; - - if (!dp || !property_list) - return 0; - - for (i = 0; i < property_count; i++) { - prop = &property_list[i]; - - if (prop->type == ACPI_DP_TYPE_UNKNOWN || !prop->name) - continue; - - switch (prop->type) { - case ACPI_DP_TYPE_INTEGER: - acpi_dp_add_integer(dp, prop->name, prop->integer); - break; - case ACPI_DP_TYPE_STRING: - acpi_dp_add_string(dp, prop->name, prop->string); - break; - case ACPI_DP_TYPE_REFERENCE: - acpi_dp_add_reference(dp, prop->name, prop->string); - break; - case ACPI_DP_TYPE_ARRAY: - acpi_dp_add_array(dp, prop->array); - break; - case ACPI_DP_TYPE_CHILD: - acpi_dp_add_child(dp, prop->name, prop->child); - break; - default: - continue; - } - - ++properties_added; - } - - return properties_added; -} - -struct acpi_dp *acpi_dp_add_integer(struct acpi_dp *dp, const char *name, - uint64_t value) -{ - if (!dp) - return NULL; - - struct acpi_dp *new = acpi_dp_new(dp, ACPI_DP_TYPE_INTEGER, name); - - if (new) - new->integer = value; - - return new; -} - -struct acpi_dp *acpi_dp_add_string(struct acpi_dp *dp, const char *name, - const char *string) -{ - if (!dp) - return NULL; - - struct acpi_dp *new = acpi_dp_new(dp, ACPI_DP_TYPE_STRING, name); - - if (new) - new->string = string; - - return new; -} - -struct acpi_dp *acpi_dp_add_reference(struct acpi_dp *dp, const char *name, - const char *reference) -{ - if (!dp) - return NULL; - - struct acpi_dp *new = acpi_dp_new(dp, ACPI_DP_TYPE_REFERENCE, name); - - if (new) - new->string = reference; - - return new; -} - -struct acpi_dp *acpi_dp_add_child(struct acpi_dp *dp, const char *name, - struct acpi_dp *child) -{ - struct acpi_dp *new; - - if (!dp || !child || child->type != ACPI_DP_TYPE_TABLE) - return NULL; - - new = acpi_dp_new(dp, ACPI_DP_TYPE_CHILD, name); - if (new) { - new->child = child; - new->string = child->name; - } - - return new; -} - -struct acpi_dp *acpi_dp_add_array(struct acpi_dp *dp, struct acpi_dp *array) -{ - struct acpi_dp *new; - - if (!dp || !array || array->type != ACPI_DP_TYPE_TABLE) - return NULL; - - new = acpi_dp_new(dp, ACPI_DP_TYPE_ARRAY, array->name); - if (new) - new->array = array; - - return new; -} - -struct acpi_dp *acpi_dp_add_integer_array(struct acpi_dp *dp, const char *name, - const uint64_t *array, int len) -{ - struct acpi_dp *dp_array; - int i; - - if (!dp || len <= 0) - return NULL; - - dp_array = acpi_dp_new_table(name); - if (!dp_array) - return NULL; - - for (i = 0; i < len; i++) - if (!acpi_dp_add_integer(dp_array, NULL, array[i])) - break; - - acpi_dp_add_array(dp, dp_array); - - return dp_array; -} - -struct acpi_dp *acpi_dp_add_gpio(struct acpi_dp *dp, const char *name, - const char *ref, int index, int pin, - int active_low) -{ - if (!dp) - return NULL; - - struct acpi_dp *gpio = acpi_dp_new_table(name); - - if (!gpio) - return NULL; - - /* The device that has _CRS containing GpioIO()/GpioInt() */ - acpi_dp_add_reference(gpio, NULL, ref); - - /* Index of the GPIO resource in _CRS starting from zero */ - acpi_dp_add_integer(gpio, NULL, index); - - /* Pin in the GPIO resource, typically zero */ - acpi_dp_add_integer(gpio, NULL, pin); - - /* Set if pin is active low */ - acpi_dp_add_integer(gpio, NULL, active_low); - - acpi_dp_add_array(dp, gpio); - - return gpio; -} - -/* - * This function writes a PCI device with _ADR object: - * Example: - * Scope (\_SB.PCI0) - * { - * Device (IGFX) - * { - * Name (_ADR, 0x0000000000000000) - * Method (_STA, 0, NotSerialized) { Return (status) } - * } - * } - */ -void acpi_device_write_pci_dev(const struct device *dev) -{ - const char *scope = acpi_device_scope(dev); - const char *name = acpi_device_name(dev); - - assert(dev->path.type == DEVICE_PATH_PCI); - assert(name); - assert(scope); - - acpigen_write_scope(scope); - acpigen_write_device(name); - - acpigen_write_ADR_pci_device(dev); - acpigen_write_STA(acpi_device_status(dev)); - - acpigen_pop_len(); /* Device */ - acpigen_pop_len(); /* Scope */ -} |