106 lines
3.1 KiB
C
106 lines
3.1 KiB
C
#include <uacpi/types.h>
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/*
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* BEFORE YOU USE THIS API:
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* uACPI manages FADT registers on its own entirely, you should only use this
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* API directly if there's absolutely no other way for your use case, e.g.
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* implementing a CPU idle state driver that does C state switching or similar.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef UACPI_BAREBONES_MODE
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typedef enum uacpi_register {
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UACPI_REGISTER_PM1_STS = 0,
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UACPI_REGISTER_PM1_EN,
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UACPI_REGISTER_PM1_CNT,
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UACPI_REGISTER_PM_TMR,
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UACPI_REGISTER_PM2_CNT,
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UACPI_REGISTER_SLP_CNT,
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UACPI_REGISTER_SLP_STS,
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UACPI_REGISTER_RESET,
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UACPI_REGISTER_SMI_CMD,
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UACPI_REGISTER_MAX = UACPI_REGISTER_SMI_CMD,
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} uacpi_register;
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/*
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* Read a register from FADT
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*
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* NOTE: write-only bits (if any) are cleared automatically
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*/
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uacpi_status uacpi_read_register(uacpi_register, uacpi_u64*);
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/*
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* Write a register from FADT
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*
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* NOTE:
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* - Preserved bits (if any) are preserved automatically
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* - If a register is made up of two (e.g. PM1a and PM1b) parts, the input
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* is written to both at the same time
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*/
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uacpi_status uacpi_write_register(uacpi_register, uacpi_u64);
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/*
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* Write a register from FADT
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*
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* NOTE:
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* - Preserved bits (if any) are preserved automatically
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* - For registers that are made up of two (e.g. PM1a and PM1b) parts, the
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* provided values are written to their respective physical register
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*/
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uacpi_status uacpi_write_registers(uacpi_register, uacpi_u64, uacpi_u64);
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typedef enum uacpi_register_field {
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UACPI_REGISTER_FIELD_TMR_STS = 0,
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UACPI_REGISTER_FIELD_BM_STS,
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UACPI_REGISTER_FIELD_GBL_STS,
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UACPI_REGISTER_FIELD_PWRBTN_STS,
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UACPI_REGISTER_FIELD_SLPBTN_STS,
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UACPI_REGISTER_FIELD_RTC_STS,
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UACPI_REGISTER_FIELD_PCIEX_WAKE_STS,
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UACPI_REGISTER_FIELD_HWR_WAK_STS,
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UACPI_REGISTER_FIELD_WAK_STS,
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UACPI_REGISTER_FIELD_TMR_EN,
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UACPI_REGISTER_FIELD_GBL_EN,
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UACPI_REGISTER_FIELD_PWRBTN_EN,
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UACPI_REGISTER_FIELD_SLPBTN_EN,
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UACPI_REGISTER_FIELD_RTC_EN,
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UACPI_REGISTER_FIELD_PCIEXP_WAKE_DIS,
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UACPI_REGISTER_FIELD_SCI_EN,
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UACPI_REGISTER_FIELD_BM_RLD,
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UACPI_REGISTER_FIELD_GBL_RLS,
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UACPI_REGISTER_FIELD_SLP_TYP,
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UACPI_REGISTER_FIELD_HWR_SLP_TYP,
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UACPI_REGISTER_FIELD_SLP_EN,
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UACPI_REGISTER_FIELD_HWR_SLP_EN,
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UACPI_REGISTER_FIELD_ARB_DIS,
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UACPI_REGISTER_FIELD_MAX = UACPI_REGISTER_FIELD_ARB_DIS,
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} uacpi_register_field;
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/*
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* Read a field from a FADT register
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*
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* NOTE: The value is automatically masked and shifted down as appropriate,
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* the client code doesn't have to do any bit manipulation. E.g. for
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* a field at 0b???XX??? the returned value will contain just the 0bXX
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*/
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uacpi_status uacpi_read_register_field(uacpi_register_field, uacpi_u64*);
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/*
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* Write to a field of a FADT register
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*
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* NOTE: The value is automatically masked and shifted up as appropriate,
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* the client code doesn't have to do any bit manipulation. E.g. for
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* a field at 0b???XX??? the passed value should be just 0bXX
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*/
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uacpi_status uacpi_write_register_field(uacpi_register_field, uacpi_u64);
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#endif // !UACPI_BAREBONES_MODE
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#ifdef __cplusplus
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}
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#endif
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