From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44297) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gKQAG-0000Wc-4P for qemu-devel@nongnu.org; Wed, 07 Nov 2018 10:54:45 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gKQAE-00024j-ES for qemu-devel@nongnu.org; Wed, 07 Nov 2018 10:54:44 -0500 Received: from mail-oi1-x243.google.com ([2607:f8b0:4864:20::243]:45032) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1gKQAC-0001ww-9M for qemu-devel@nongnu.org; Wed, 07 Nov 2018 10:54:42 -0500 Received: by mail-oi1-x243.google.com with SMTP id k19-v6so14162913oic.11 for ; Wed, 07 Nov 2018 07:54:32 -0800 (PST) Sender: Corey Minyard From: minyard@acm.org Date: Wed, 7 Nov 2018 09:54:04 -0600 Message-Id: <20181107155405.24013-3-minyard@acm.org> In-Reply-To: <20181107155405.24013-1-minyard@acm.org> References: <20181107155405.24013-1-minyard@acm.org> Subject: [Qemu-devel] [PATCH 2/3] i2c: Add an SMBus vmstate structure List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Paolo Bonzini , "Michael S . Tsirkin" , "Dr . David Alan Gilbert" , Corey Minyard From: Corey Minyard There is no vmstate handling for SMBus, so no device sitting on SMBus can have a state transfer that works reliable. So add it. Signed-off-by: Corey Minyard Cc: Paolo Bonzini Cc: Michael S. Tsirkin Cc: Dr. David Alan Gilbert --- 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 6ff77c582f..b0774d7683 100644 --- a/hw/i2c/smbus.c +++ b/hw/i2c/smbus.c @@ -349,6 +349,20 @@ 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 d8b1b9ee81..7b52020121 100644 --- a/include/hw/i2c/smbus.h +++ b/include/hw/i2c/smbus.h @@ -53,14 +53,16 @@ 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 @@ void smbus_eeprom_init_one(I2CBus *smbus, uint8_t address, uint8_t *eeprom_buf); 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 -- 2.17.1