diff options
Diffstat (limited to 'drivers/acpi/acpica/rsmisc.c')
| -rw-r--r-- | drivers/acpi/acpica/rsmisc.c | 785 |
1 files changed, 785 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/rsmisc.c b/drivers/acpi/acpica/rsmisc.c new file mode 100644 index 000000000..1763a3dbc --- /dev/null +++ b/drivers/acpi/acpica/rsmisc.c @@ -0,0 +1,785 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 +/******************************************************************************* + * + * Module Name: rsmisc - Miscellaneous resource descriptors + * + ******************************************************************************/ + +#include <acpi/acpi.h> +#include "accommon.h" +#include "acresrc.h" + +#define _COMPONENT ACPI_RESOURCES +ACPI_MODULE_NAME("rsmisc") +#define INIT_RESOURCE_TYPE(i) i->resource_offset +#define INIT_RESOURCE_LENGTH(i) i->aml_offset +#define INIT_TABLE_LENGTH(i) i->value +#define COMPARE_OPCODE(i) i->resource_offset +#define COMPARE_TARGET(i) i->aml_offset +#define COMPARE_VALUE(i) i->value +/******************************************************************************* + * + * FUNCTION: acpi_rs_convert_aml_to_resource + * + * PARAMETERS: resource - Pointer to the resource descriptor + * aml - Where the AML descriptor is returned + * info - Pointer to appropriate conversion table + * + * RETURN: Status + * + * DESCRIPTION: Convert an external AML resource descriptor to the corresponding + * internal resource descriptor + * + ******************************************************************************/ +acpi_status +acpi_rs_convert_aml_to_resource(struct acpi_resource *resource, + union aml_resource *aml, + struct acpi_rsconvert_info *info) +{ + acpi_rs_length aml_resource_length; + void *source; + void *destination; + char *target; + u8 count; + u8 flags_mode = FALSE; + u16 item_count = 0; + u16 temp16 = 0; + + ACPI_FUNCTION_TRACE(rs_convert_aml_to_resource); + + if (!info) { + return_ACPI_STATUS(AE_BAD_PARAMETER); + } + + if (((acpi_size)resource) & 0x3) { + + /* Each internal resource struct is expected to be 32-bit aligned */ + + ACPI_WARNING((AE_INFO, + "Misaligned resource pointer (get): %p Type 0x%2.2X Length %u", + resource, resource->type, resource->length)); + } + + /* Extract the resource Length field (does not include header length) */ + + aml_resource_length = acpi_ut_get_resource_length(aml); + + /* + * First table entry must be ACPI_RSC_INITxxx and must contain the + * table length (# of table entries) + */ + count = INIT_TABLE_LENGTH(info); + while (count) { + /* + * Source is the external AML byte stream buffer, + * destination is the internal resource descriptor + */ + source = ACPI_ADD_PTR(void, aml, info->aml_offset); + destination = + ACPI_ADD_PTR(void, resource, info->resource_offset); + + switch (info->opcode) { + case ACPI_RSC_INITGET: + /* + * Get the resource type and the initial (minimum) length + */ + memset(resource, 0, INIT_RESOURCE_LENGTH(info)); + resource->type = INIT_RESOURCE_TYPE(info); + resource->length = INIT_RESOURCE_LENGTH(info); + break; + + case ACPI_RSC_INITSET: + break; + + case ACPI_RSC_FLAGINIT: + + flags_mode = TRUE; + break; + + case ACPI_RSC_1BITFLAG: + /* + * Mask and shift the flag bit + */ + ACPI_SET8(destination, + ((ACPI_GET8(source) >> info->value) & 0x01)); + break; + + case ACPI_RSC_2BITFLAG: + /* + * Mask and shift the flag bits + */ + ACPI_SET8(destination, + ((ACPI_GET8(source) >> info->value) & 0x03)); + break; + + case ACPI_RSC_3BITFLAG: + /* + * Mask and shift the flag bits + */ + ACPI_SET8(destination, + ((ACPI_GET8(source) >> info->value) & 0x07)); + break; + + case ACPI_RSC_COUNT: + + item_count = ACPI_GET8(source); + ACPI_SET8(destination, item_count); + + resource->length = resource->length + + (info->value * (item_count - 1)); + break; + + case ACPI_RSC_COUNT16: + + item_count = aml_resource_length; + ACPI_SET16(destination, item_count); + + resource->length = resource->length + + (info->value * (item_count - 1)); + break; + + case ACPI_RSC_COUNT_GPIO_PIN: + + target = ACPI_ADD_PTR(void, aml, info->value); + item_count = ACPI_GET16(target) - ACPI_GET16(source); + + resource->length = resource->length + item_count; + item_count = item_count / 2; + ACPI_SET16(destination, item_count); + break; + + case ACPI_RSC_COUNT_GPIO_VEN: + + item_count = ACPI_GET8(source); + ACPI_SET8(destination, item_count); + + resource->length = + resource->length + (info->value * item_count); + break; + + case ACPI_RSC_COUNT_GPIO_RES: + /* + * Vendor data is optional (length/offset may both be zero) + * Examine vendor data length field first + */ + target = ACPI_ADD_PTR(void, aml, (info->value + 2)); + if (ACPI_GET16(target)) { + + /* Use vendor offset to get resource source length */ + + target = ACPI_ADD_PTR(void, aml, info->value); + item_count = + ACPI_GET16(target) - ACPI_GET16(source); + } else { + /* No vendor data to worry about */ + + item_count = aml->large_header.resource_length + + sizeof(struct aml_resource_large_header) - + ACPI_GET16(source); + } + + resource->length = resource->length + item_count; + ACPI_SET16(destination, item_count); + break; + + case ACPI_RSC_COUNT_SERIAL_VEN: + + item_count = ACPI_GET16(source) - info->value; + + resource->length = resource->length + item_count; + ACPI_SET16(destination, item_count); + break; + + case ACPI_RSC_COUNT_SERIAL_RES: + + item_count = (aml_resource_length + + sizeof(struct aml_resource_large_header)) + - ACPI_GET16(source) - info->value; + + resource->length = resource->length + item_count; + ACPI_SET16(destination, item_count); + break; + + case ACPI_RSC_LENGTH: + + resource->length = resource->length + info->value; + break; + + case ACPI_RSC_MOVE8: + case ACPI_RSC_MOVE16: + case ACPI_RSC_MOVE32: + case ACPI_RSC_MOVE64: + /* + * Raw data move. Use the Info value field unless item_count has + * been previously initialized via a COUNT opcode + */ + if (info->value) { + item_count = info->value; + } + acpi_rs_move_data(destination, source, item_count, + info->opcode); + break; + + case ACPI_RSC_MOVE_GPIO_PIN: + + /* Generate and set the PIN data pointer */ + + target = (char *)ACPI_ADD_PTR(void, resource, + (resource->length - + item_count * 2)); + *(u16 **)destination = ACPI_CAST_PTR(u16, target); + + /* Copy the PIN data */ + + source = ACPI_ADD_PTR(void, aml, ACPI_GET16(source)); + acpi_rs_move_data(target, source, item_count, + info->opcode); + break; + + case ACPI_RSC_MOVE_GPIO_RES: + + /* Generate and set the resource_source string pointer */ + + target = (char *)ACPI_ADD_PTR(void, resource, + (resource->length - + item_count)); + *(u8 **)destination = ACPI_CAST_PTR(u8, target); + + /* Copy the resource_source string */ + + source = ACPI_ADD_PTR(void, aml, ACPI_GET16(source)); + acpi_rs_move_data(target, source, item_count, + info->opcode); + break; + + case ACPI_RSC_MOVE_SERIAL_VEN: + + /* Generate and set the Vendor Data pointer */ + + target = (char *)ACPI_ADD_PTR(void, resource, + (resource->length - + item_count)); + *(u8 **)destination = ACPI_CAST_PTR(u8, target); + + /* Copy the Vendor Data */ + + source = ACPI_ADD_PTR(void, aml, info->value); + acpi_rs_move_data(target, source, item_count, + info->opcode); + break; + + case ACPI_RSC_MOVE_SERIAL_RES: + + /* Generate and set the resource_source string pointer */ + + target = (char *)ACPI_ADD_PTR(void, resource, + (resource->length - + item_count)); + *(u8 **)destination = ACPI_CAST_PTR(u8, target); + + /* Copy the resource_source string */ + + source = + ACPI_ADD_PTR(void, aml, + (ACPI_GET16(source) + info->value)); + acpi_rs_move_data(target, source, item_count, + info->opcode); + break; + + case ACPI_RSC_SET8: + + memset(destination, info->aml_offset, info->value); + break; + + case ACPI_RSC_DATA8: + + target = ACPI_ADD_PTR(char, resource, info->value); + memcpy(destination, source, ACPI_GET16(target)); + break; + + case ACPI_RSC_ADDRESS: + /* + * Common handler for address descriptor flags + */ + if (!acpi_rs_get_address_common(resource, aml)) { + return_ACPI_STATUS + (AE_AML_INVALID_RESOURCE_TYPE); + } + break; + + case ACPI_RSC_SOURCE: + /* + * Optional resource_source (Index and String) + */ + resource->length += + acpi_rs_get_resource_source(aml_resource_length, + info->value, + destination, aml, NULL); + break; + + case ACPI_RSC_SOURCEX: + /* + * Optional resource_source (Index and String). This is the more + * complicated case used by the Interrupt() macro + */ + target = ACPI_ADD_PTR(char, resource, + info->aml_offset + + (item_count * 4)); + + resource->length += + acpi_rs_get_resource_source(aml_resource_length, + (acpi_rs_length) + (((item_count - + 1) * sizeof(u32)) + + info->value), + destination, aml, + target); + break; + + case ACPI_RSC_BITMASK: + /* + * 8-bit encoded bitmask (DMA macro) + */ + item_count = + acpi_rs_decode_bitmask(ACPI_GET8(source), + destination); + if (item_count) { + resource->length += (item_count - 1); + } + + target = ACPI_ADD_PTR(char, resource, info->value); + ACPI_SET8(target, item_count); + break; + + case ACPI_RSC_BITMASK16: + /* + * 16-bit encoded bitmask (IRQ macro) + */ + ACPI_MOVE_16_TO_16(&temp16, source); + + item_count = + acpi_rs_decode_bitmask(temp16, destination); + if (item_count) { + resource->length += (item_count - 1); + } + + target = ACPI_ADD_PTR(char, resource, info->value); + ACPI_SET8(target, item_count); + break; + + case ACPI_RSC_EXIT_NE: + /* + * control - Exit conversion if not equal + */ + switch (info->resource_offset) { + case ACPI_RSC_COMPARE_AML_LENGTH: + + if (aml_resource_length != info->value) { + goto exit; + } + break; + + case ACPI_RSC_COMPARE_VALUE: + + if (ACPI_GET8(source) != info->value) { + goto exit; + } + break; + + default: + + ACPI_ERROR((AE_INFO, + "Invalid conversion sub-opcode")); + return_ACPI_STATUS(AE_BAD_PARAMETER); + } + break; + + default: + + ACPI_ERROR((AE_INFO, "Invalid conversion opcode")); + return_ACPI_STATUS(AE_BAD_PARAMETER); + } + + count--; + info++; + } + +exit: + if (!flags_mode) { + + /* Round the resource struct length up to the next boundary (32 or 64) */ + + resource->length = (u32) + ACPI_ROUND_UP_TO_NATIVE_WORD(resource->length); + } + return_ACPI_STATUS(AE_OK); +} + +/******************************************************************************* + * + * FUNCTION: acpi_rs_convert_resource_to_aml + * + * PARAMETERS: resource - Pointer to the resource descriptor + * aml - Where the AML descriptor is returned + * info - Pointer to appropriate conversion table + * + * RETURN: Status + * + * DESCRIPTION: Convert an internal resource descriptor to the corresponding + * external AML resource descriptor. + * + ******************************************************************************/ + +acpi_status +acpi_rs_convert_resource_to_aml(struct acpi_resource *resource, + union aml_resource *aml, + struct acpi_rsconvert_info *info) +{ + void *source = NULL; + void *destination; + char *target; + acpi_rsdesc_size aml_length = 0; + u8 count; + u16 temp16 = 0; + u16 item_count = 0; + + ACPI_FUNCTION_TRACE(rs_convert_resource_to_aml); + + if (!info) { + return_ACPI_STATUS(AE_BAD_PARAMETER); + } + + /* + * First table entry must be ACPI_RSC_INITxxx and must contain the + * table length (# of table entries) + */ + count = INIT_TABLE_LENGTH(info); + + while (count) { + /* + * Source is the internal resource descriptor, + * destination is the external AML byte stream buffer + */ + source = ACPI_ADD_PTR(void, resource, info->resource_offset); + destination = ACPI_ADD_PTR(void, aml, info->aml_offset); + + switch (info->opcode) { + case ACPI_RSC_INITSET: + + memset(aml, 0, INIT_RESOURCE_LENGTH(info)); + aml_length = INIT_RESOURCE_LENGTH(info); + acpi_rs_set_resource_header(INIT_RESOURCE_TYPE(info), + aml_length, aml); + break; + + case ACPI_RSC_INITGET: + break; + + case ACPI_RSC_FLAGINIT: + /* + * Clear the flag byte + */ + ACPI_SET8(destination, 0); + break; + + case ACPI_RSC_1BITFLAG: + /* + * Mask and shift the flag bit + */ + ACPI_SET_BIT(*ACPI_CAST8(destination), (u8) + ((ACPI_GET8(source) & 0x01) << info-> + value)); + break; + + case ACPI_RSC_2BITFLAG: + /* + * Mask and shift the flag bits + */ + ACPI_SET_BIT(*ACPI_CAST8(destination), (u8) + ((ACPI_GET8(source) & 0x03) << info-> + value)); + break; + + case ACPI_RSC_3BITFLAG: + /* + * Mask and shift the flag bits + */ + ACPI_SET_BIT(*ACPI_CAST8(destination), (u8) + ((ACPI_GET8(source) & 0x07) << info-> + value)); + break; + + case ACPI_RSC_COUNT: + + item_count = ACPI_GET8(source); + ACPI_SET8(destination, item_count); + + aml_length = (u16) + (aml_length + (info->value * (item_count - 1))); + break; + + case ACPI_RSC_COUNT16: + + item_count = ACPI_GET16(source); + aml_length = (u16) (aml_length + item_count); + acpi_rs_set_resource_length(aml_length, aml); + break; + + case ACPI_RSC_COUNT_GPIO_PIN: + + item_count = ACPI_GET16(source); + ACPI_SET16(destination, aml_length); + + aml_length = (u16)(aml_length + item_count * 2); + target = ACPI_ADD_PTR(void, aml, info->value); + ACPI_SET16(target, aml_length); + acpi_rs_set_resource_length(aml_length, aml); + break; + + case ACPI_RSC_COUNT_GPIO_VEN: + + item_count = ACPI_GET16(source); + ACPI_SET16(destination, item_count); + + aml_length = + (u16)(aml_length + (info->value * item_count)); + acpi_rs_set_resource_length(aml_length, aml); + break; + + case ACPI_RSC_COUNT_GPIO_RES: + + /* Set resource source string length */ + + item_count = ACPI_GET16(source); + ACPI_SET16(destination, aml_length); + + /* Compute offset for the Vendor Data */ + + aml_length = (u16)(aml_length + item_count); + target = ACPI_ADD_PTR(void, aml, info->value); + + /* Set vendor offset only if there is vendor data */ + + ACPI_SET16(target, aml_length); + + acpi_rs_set_resource_length(aml_length, aml); + break; + + case ACPI_RSC_COUNT_SERIAL_VEN: + + item_count = ACPI_GET16(source); + ACPI_SET16(destination, item_count + info->value); + aml_length = (u16)(aml_length + item_count); + acpi_rs_set_resource_length(aml_length, aml); + break; + + case ACPI_RSC_COUNT_SERIAL_RES: + + item_count = ACPI_GET16(source); + aml_length = (u16)(aml_length + item_count); + acpi_rs_set_resource_length(aml_length, aml); + break; + + case ACPI_RSC_LENGTH: + + acpi_rs_set_resource_length(info->value, aml); + break; + + case ACPI_RSC_MOVE8: + case ACPI_RSC_MOVE16: + case ACPI_RSC_MOVE32: + case ACPI_RSC_MOVE64: + + if (info->value) { + item_count = info->value; + } + acpi_rs_move_data(destination, source, item_count, + info->opcode); + break; + + case ACPI_RSC_MOVE_GPIO_PIN: + + destination = (char *)ACPI_ADD_PTR(void, aml, + ACPI_GET16 + (destination)); + source = *(u16 **)source; + acpi_rs_move_data(destination, source, item_count, + info->opcode); + break; + + case ACPI_RSC_MOVE_GPIO_RES: + + /* Used for both resource_source string and vendor_data */ + + destination = (char *)ACPI_ADD_PTR(void, aml, + ACPI_GET16 + (destination)); + source = *(u8 **)source; + acpi_rs_move_data(destination, source, item_count, + info->opcode); + break; + + case ACPI_RSC_MOVE_SERIAL_VEN: + + destination = (char *)ACPI_ADD_PTR(void, aml, + (aml_length - + item_count)); + source = *(u8 **)source; + acpi_rs_move_data(destination, source, item_count, + info->opcode); + break; + + case ACPI_RSC_MOVE_SERIAL_RES: + + destination = (char *)ACPI_ADD_PTR(void, aml, + (aml_length - + item_count)); + source = *(u8 **)source; + acpi_rs_move_data(destination, source, item_count, + info->opcode); + break; + + case ACPI_RSC_ADDRESS: + + /* Set the Resource Type, General Flags, and Type-Specific Flags */ + + acpi_rs_set_address_common(aml, resource); + break; + + case ACPI_RSC_SOURCEX: + /* + * Optional resource_source (Index and String) + */ + aml_length = + acpi_rs_set_resource_source(aml, + (acpi_rs_length) + aml_length, source); + acpi_rs_set_resource_length(aml_length, aml); + break; + + case ACPI_RSC_SOURCE: + /* + * Optional resource_source (Index and String). This is the more + * complicated case used by the Interrupt() macro + */ + aml_length = + acpi_rs_set_resource_source(aml, info->value, + source); + acpi_rs_set_resource_length(aml_length, aml); + break; + + case ACPI_RSC_BITMASK: + /* + * 8-bit encoded bitmask (DMA macro) + */ + ACPI_SET8(destination, + acpi_rs_encode_bitmask(source, + *ACPI_ADD_PTR(u8, + resource, + info-> + value))); + break; + + case ACPI_RSC_BITMASK16: + /* + * 16-bit encoded bitmask (IRQ macro) + */ + temp16 = + acpi_rs_encode_bitmask(source, + *ACPI_ADD_PTR(u8, resource, + info->value)); + ACPI_MOVE_16_TO_16(destination, &temp16); + break; + + case ACPI_RSC_EXIT_LE: + /* + * control - Exit conversion if less than or equal + */ + if (item_count <= info->value) { + goto exit; + } + break; + + case ACPI_RSC_EXIT_NE: + /* + * control - Exit conversion if not equal + */ + switch (COMPARE_OPCODE(info)) { + case ACPI_RSC_COMPARE_VALUE: + + if (*ACPI_ADD_PTR(u8, resource, + COMPARE_TARGET(info)) != + COMPARE_VALUE(info)) { + goto exit; + } + break; + + default: + + ACPI_ERROR((AE_INFO, + "Invalid conversion sub-opcode")); + return_ACPI_STATUS(AE_BAD_PARAMETER); + } + break; + + case ACPI_RSC_EXIT_EQ: + /* + * control - Exit conversion if equal + */ + if (*ACPI_ADD_PTR(u8, resource, + COMPARE_TARGET(info)) == + COMPARE_VALUE(info)) { + goto exit; + } + break; + + default: + + ACPI_ERROR((AE_INFO, "Invalid conversion opcode")); + return_ACPI_STATUS(AE_BAD_PARAMETER); + } + + count--; + info++; + } + +exit: + return_ACPI_STATUS(AE_OK); +} + +#if 0 +/* Previous resource validations */ + +if (aml->ext_address64.revision_ID != AML_RESOURCE_EXTENDED_ADDRESS_REVISION) { + return_ACPI_STATUS(AE_SUPPORT); +} + +if (resource->data.start_dpf.performance_robustness >= 3) { + return_ACPI_STATUS(AE_AML_BAD_RESOURCE_VALUE); +} + +if (((aml->irq.flags & 0x09) == 0x00) || ((aml->irq.flags & 0x09) == 0x09)) { + /* + * Only [active_high, edge_sensitive] or [active_low, level_sensitive] + * polarity/trigger interrupts are allowed (ACPI spec, section + * "IRQ Format"), so 0x00 and 0x09 are illegal. + */ + ACPI_ERROR((AE_INFO, + "Invalid interrupt polarity/trigger in resource list, 0x%X", + aml->irq.flags)); + return_ACPI_STATUS(AE_BAD_DATA); +} + +resource->data.extended_irq.interrupt_count = temp8; +if (temp8 < 1) { + + /* Must have at least one IRQ */ + + return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH); +} + +if (resource->data.dma.transfer == 0x03) { + ACPI_ERROR((AE_INFO, "Invalid DMA.Transfer preference (3)")); + return_ACPI_STATUS(AE_BAD_DATA); +} +#endif |