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X-Received-From: 2607:f8b0:400e:c00::244 Subject: [Qemu-devel] [PATCH 08/14] i2c: Add an SMBus vmstate structure X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Corey Minyard Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Corey Minyard Signed-off-by: Corey Minyard --- hw/i2c/smbus.c | 14 ++++++++++++++ include/hw/i2c/smbus.h | 18 +++++++++++++++--- 2 files changed, 29 insertions(+), 3 deletions(-) diff --git a/hw/i2c/smbus.c b/hw/i2c/smbus.c index 4b0e264..e15f3f2 100644 --- a/hw/i2c/smbus.c +++ b/hw/i2c/smbus.c @@ -357,6 +357,20 @@ int smbus_write_block(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t *data, return 0; } +const VMStateDescription vmstate_smbus_device = { + .name = TYPE_SMBUS_DEVICE, + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_I2C_SLAVE(i2c, SMBusDevice), + VMSTATE_INT32(mode, SMBusDevice), + VMSTATE_INT32(data_len, SMBusDevice), + VMSTATE_UINT8_ARRAY(data_buf, SMBusDevice, SMBUS_DATA_MAX_LEN), + VMSTATE_UINT8(command, SMBusDevice), + VMSTATE_END_OF_LIST() + } +}; + static void smbus_device_class_init(ObjectClass *klass, void *data) { I2CSlaveClass *sc = I2C_SLAVE_CLASS(klass); diff --git a/include/hw/i2c/smbus.h b/include/hw/i2c/smbus.h index f1b8078..7794026 100644 --- a/include/hw/i2c/smbus.h +++ b/include/hw/i2c/smbus.h @@ -54,14 +54,16 @@ typedef struct SMBusDeviceClass uint8_t (*read_data)(SMBusDevice *dev, uint8_t cmd, int n); } SMBusDeviceClass; +#define SMBUS_DATA_MAX_LEN 34 /* command + len + 32 bytes of data. */ + struct SMBusDevice { /* The SMBus protocol is implemented on top of I2C. */ I2CSlave i2c; /* Remaining fields for internal use only. */ - int mode; - int data_len; - uint8_t data_buf[34]; /* command + len + 32 bytes of data. */ + int32_t mode; + int32_t data_len; + uint8_t data_buf[SMBUS_DATA_MAX_LEN]; uint8_t command; }; @@ -93,4 +95,14 @@ int smbus_write_block(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t *data, void smbus_eeprom_init(I2CBus *smbus, int nb_eeprom, const uint8_t *eeprom_spd, int size); +extern const VMStateDescription vmstate_smbus_device; + +#define VMSTATE_SMBUS_DEVICE(_field, _state) { \ + .name = (stringify(_field)), \ + .size = sizeof(SMBusDevice), \ + .vmsd = &vmstate_smbus_device, \ + .flags = VMS_STRUCT, \ + .offset = vmstate_offset_value(_state, _field, SMBusDevice), \ +} + #endif