LXR qemu/include/hw/i2c/pm

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