LXR qemu/include/hw/i2c/pm

   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
   9typedef 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
  45void 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 */
  52bool pm_smbus_vmstate_needed(void);
  53
  54extern const VMStateDescription pmsmb_vmstate;
  55
  56#endif /* PM_SMBUS_H */
  57