pm_smbus.h (1412B)
1 #ifndef PM_SMBUS_H 2 #define PM_SMBUS_H 3 4 #include "exec/memory.h" 5 #include "hw/i2c/smbus_master.h" 6 7 #define PM_SMBUS_MAX_MSG_SIZE 32 8 9 typedef struct PMSMBus { 10 I2CBus *smbus; 11 MemoryRegion io; 12 13 uint8_t smb_stat; 14 uint8_t smb_ctl; 15 uint8_t smb_cmd; 16 uint8_t smb_addr; 17 uint8_t smb_data0; 18 uint8_t smb_data1; 19 uint8_t smb_data[PM_SMBUS_MAX_MSG_SIZE]; 20 uint8_t smb_blkdata; 21 uint8_t smb_auxctl; 22 uint32_t smb_index; 23 24 /* Set by pm_smbus.c */ 25 void (*reset)(struct PMSMBus *s); 26 27 /* Set by the user. */ 28 bool i2c_enable; 29 void (*set_irq)(struct PMSMBus *s, bool enabled); 30 void *opaque; 31 32 /* Internally used by pm_smbus. */ 33 34 /* Set on block transfers after the last byte has been read, so the 35 INTR bit can be set at the right time. */ 36 bool op_done; 37 38 /* Set during an I2C block read, so we know how to handle data. */ 39 bool in_i2c_block_read; 40 41 /* Used to work around a bug in AMIBIOS, see smb_transaction_start() */ 42 bool start_transaction_on_status_read; 43 } PMSMBus; 44 45 void pm_smbus_init(DeviceState *parent, PMSMBus *smb, bool force_aux_blk); 46 47 /* 48 * For backwards compatibility on migration, older versions don't have 49 * working migration for pm_smbus, this lets us ignore the migrations 50 * for older machine versions. 51 */ 52 bool pm_smbus_vmstate_needed(void); 53 54 extern const VMStateDescription pmsmb_vmstate; 55 56 #endif /* PM_SMBUS_H */