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57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
#ifndef PM_SMBUS_H
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#define PM_SMBUS_H
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#include "exec/memory.h"
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#include "hw/i2c/smbus_master.h"
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#define PM_SMBUS_MAX_MSG_SIZE 32
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typedef struct PMSMBus {
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I2CBus *smbus;
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MemoryRegion io;
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uint8_t smb_stat;
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uint8_t smb_ctl;
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uint8_t smb_cmd;
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uint8_t smb_addr;
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uint8_t smb_data0;
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uint8_t smb_data1;
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uint8_t smb_data[PM_SMBUS_MAX_MSG_SIZE];
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uint8_t smb_blkdata;
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uint8_t smb_auxctl;
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uint32_t smb_index;
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/* Set by pm_smbus.c */
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void (*reset)(struct PMSMBus *s);
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/* Set by the user. */
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bool i2c_enable;
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void (*set_irq)(struct PMSMBus *s, bool enabled);
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void *opaque;
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/* Internally used by pm_smbus. */
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/* Set on block transfers after the last byte has been read, so the
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INTR bit can be set at the right time. */
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bool op_done;
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/* Set during an I2C block read, so we know how to handle data. */
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bool in_i2c_block_read;
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/* Used to work around a bug in AMIBIOS, see smb_transaction_start() */
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bool start_transaction_on_status_read;
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} PMSMBus;
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void pm_smbus_init(DeviceState *parent, PMSMBus *smb, bool force_aux_blk);
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/*
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* For backwards compatibility on migration, older versions don't have
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* working migration for pm_smbus, this lets us ignore the migrations
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* for older machine versions.
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*/
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bool pm_smbus_vmstate_needed(void);
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extern const VMStateDescription pmsmb_vmstate;
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#endif /* PM_SMBUS_H */
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