SMBus qdev conversion

Signed-off-by: NPaul Brook <paul@codesourcery.com>

hw/mips_malta.c

@@ -911,7 +911,11 @@ void mips_malta_init (ram_addr_t ram_size,
     eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */
     for (i = 0; i < 8; i++) {
         /* TODO: Populate SPD eeprom data.  */
-        smbus_eeprom_device_init(smbus, 0x50 + i, eeprom_buf + (i * 256));
+        DeviceState *eeprom;
+        eeprom = qdev_create(smbus, "smbus-eeprom");
+        qdev_set_prop_int(eeprom, "address", 0x50 + i);
+        qdev_set_prop_ptr(eeprom, "data", eeprom_buf + (i * 256));
+        qdev_init(eeprom);
     }
     pit = pit_init(0x40, i8259[0]);
     DMA_init(0);

hw/pc.c

@@ -1109,7 +1109,11 @@ static void pc_init1(ram_addr_t ram_size,
         /* TODO: Populate SPD eeprom data.  */
         smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100, i8259[9]);
         for (i = 0; i < 8; i++) {
-            smbus_eeprom_device_init(smbus, 0x50 + i, eeprom_buf + (i * 256));
+            DeviceState *eeprom;
+            eeprom = qdev_create(smbus, "smbus-eeprom");
+            qdev_set_prop_int(eeprom, "address", 0x50 + i);
+            qdev_set_prop_ptr(eeprom, "data", eeprom_buf + (i * 256));
+            qdev_init(eeprom);
         }
     }
 

hw/smbus.c

@@ -37,33 +37,38 @@ enum {
 
 static void smbus_do_quick_cmd(SMBusDevice *dev, int recv)
 {
+    SMBusDeviceInfo *t = container_of(dev->i2c.info, SMBusDeviceInfo, i2c);
+
     DPRINTF("Quick Command %d\n", recv);
-    if (dev->quick_cmd)
-        dev->quick_cmd(dev, recv);
+    if (t->quick_cmd)
+        t->quick_cmd(dev, recv);
 }
 
 static void smbus_do_write(SMBusDevice *dev)
 {
+    SMBusDeviceInfo *t = container_of(dev->i2c.info, SMBusDeviceInfo, i2c);
+
     if (dev->data_len == 0) {
         smbus_do_quick_cmd(dev, 0);
     } else if (dev->data_len == 1) {
         DPRINTF("Send Byte\n");
-        if (dev->send_byte) {
-            dev->send_byte(dev, dev->data_buf[0]);
+        if (t->send_byte) {
+            t->send_byte(dev, dev->data_buf[0]);
         }
     } else {
         dev->command = dev->data_buf[0];
         DPRINTF("Command %d len %d\n", dev->command, dev->data_len - 1);
-        if (dev->write_data) {
-            dev->write_data(dev, dev->command, dev->data_buf + 1,
-                            dev->data_len - 1);
+        if (t->write_data) {
+            t->write_data(dev, dev->command, dev->data_buf + 1,
+                          dev->data_len - 1);
         }
     }
 }
 
 static void smbus_i2c_event(i2c_slave *s, enum i2c_event event)
 {
-    SMBusDevice *dev = (SMBusDevice *)s;
+    SMBusDevice *dev = FROM_I2C_SLAVE(SMBusDevice, s);
+
     switch (event) {
     case I2C_START_SEND:
         switch (dev->mode) {
@@ -145,13 +150,14 @@ static void smbus_i2c_event(i2c_slave *s, enum i2c_event event)
 
 static int smbus_i2c_recv(i2c_slave *s)
 {
-    SMBusDevice *dev = (SMBusDevice *)s;
+    SMBusDeviceInfo *t = container_of(s->info, SMBusDeviceInfo, i2c);
+    SMBusDevice *dev = FROM_I2C_SLAVE(SMBusDevice, s);
     int ret;
 
     switch (dev->mode) {
     case SMBUS_RECV_BYTE:
-        if (dev->receive_byte) {
-            ret = dev->receive_byte(dev);
+        if (t->receive_byte) {
+            ret = t->receive_byte(dev);
         } else {
             ret = 0;
         }
@@ -159,8 +165,8 @@ static int smbus_i2c_recv(i2c_slave *s)
         dev->mode = SMBUS_DONE;
         break;
     case SMBUS_READ_DATA:
-        if (dev->read_data) {
-            ret = dev->read_data(dev, dev->command, dev->data_len);
+        if (t->read_data) {
+            ret = t->read_data(dev, dev->command, dev->data_len);
             dev->data_len++;
         } else {
             ret = 0;
@@ -178,7 +184,8 @@ static int smbus_i2c_recv(i2c_slave *s)
 
 static int smbus_i2c_send(i2c_slave *s, uint8_t data)
 {
-    SMBusDevice *dev = (SMBusDevice *)s;
+    SMBusDevice *dev = FROM_I2C_SLAVE(SMBusDevice, s);
+
     switch (dev->mode) {
     case SMBUS_WRITE_DATA:
         DPRINTF("Write data %02x\n", data);
@@ -191,19 +198,22 @@ static int smbus_i2c_send(i2c_slave *s, uint8_t data)
     return 0;
 }
 
-SMBusDevice *smbus_device_init(i2c_bus *bus, int address, int size)
+static void smbus_device_init(i2c_slave *i2c)
 {
-    SMBusDevice *dev;
+    SMBusDeviceInfo *t = container_of(i2c->info, SMBusDeviceInfo, i2c);
+    SMBusDevice *dev = FROM_I2C_SLAVE(SMBusDevice, i2c);
 
-    if (size < sizeof(SMBusDevice))
-        hw_error("SMBus struct too small");
-
-    dev = (SMBusDevice *)i2c_slave_init(bus, address, size);
-    dev->i2c.event = smbus_i2c_event;
-    dev->i2c.recv = smbus_i2c_recv;
-    dev->i2c.send = smbus_i2c_send;
+    t->init(dev);
+}
 
-    return dev;
+void smbus_register_device(const char *name, int size, SMBusDeviceInfo *info)
+{
+    assert(size >= sizeof(SMBusDevice));
+    info->i2c.init = smbus_device_init;
+    info->i2c.event = smbus_i2c_event;
+    info->i2c.recv = smbus_i2c_recv;
+    info->i2c.send = smbus_i2c_send;
+    i2c_register_slave(name, size, &info->i2c);
 }
 
 /* Master device commands.  */

hw/smbus.h

@@ -28,7 +28,16 @@ struct SMBusDevice {
     /* The SMBus protocol is implemented on top of I2C.  */
     i2c_slave i2c;
 
-    /* Callbacks set by the device.  */
+    /* Remaining fields for internal use only.  */
+    int mode;
+    int data_len;
+    uint8_t data_buf[34]; /* command + len + 32 bytes of data.  */
+    uint8_t command;
+};
+
+typedef struct {
+    I2CSlaveInfo i2c;
+    void (*init)(SMBusDevice *dev);
     void (*quick_cmd)(SMBusDevice *dev, uint8_t read);
     void (*send_byte)(SMBusDevice *dev, uint8_t val);
     uint8_t (*receive_byte)(SMBusDevice *dev);
@@ -42,16 +51,9 @@ struct SMBusDevice {
        byte at a time.  The device is responsible for adding the length
        byte on block reads.  */
     uint8_t (*read_data)(SMBusDevice *dev, uint8_t cmd, int n);
+} SMBusDeviceInfo;
 
-    /* Remaining fields for internal use only.  */
-    int mode;
-    int data_len;
-    uint8_t data_buf[34]; /* command + len + 32 bytes of data.  */
-    uint8_t command;
-};
-
-/* Create a slave device.  */
-SMBusDevice *smbus_device_init(i2c_bus *bus, int address, int size);
+void smbus_register_device(const char *name, int size, SMBusDeviceInfo *info);
 
 /* Master device commands.  */
 void smbus_quick_command(i2c_bus *bus, int addr, int read);
@@ -64,6 +66,3 @@ void smbus_write_word(i2c_bus *bus, int addr, uint8_t command, uint16_t data);
 int smbus_read_block(i2c_bus *bus, int addr, uint8_t command, uint8_t *data);
 void smbus_write_block(i2c_bus *bus, int addr, uint8_t command, uint8_t *data,
                        int len);
-
-/* smbus_eeprom.c */
-void smbus_eeprom_device_init(i2c_bus *bus, uint8_t addr, uint8_t *buf);

hw/smbus_eeprom.c

@@ -29,7 +29,7 @@
 //#define DEBUG
 
 typedef struct SMBusEEPROMDevice {
-    SMBusDevice dev;
+    SMBusDevice smbusdev;
     uint8_t *data;
     uint8_t offset;
 } SMBusEEPROMDevice;
@@ -95,18 +95,28 @@ static uint8_t eeprom_read_data(SMBusDevice *dev, uint8_t cmd, int n)
     return eeprom_receive_byte(dev);
 }
 
-void smbus_eeprom_device_init(i2c_bus *bus, uint8_t addr, uint8_t *buf)
+static void smbus_eeprom_init(SMBusDevice *dev)
 {
-    SMBusEEPROMDevice *eeprom;
+    SMBusEEPROMDevice *eeprom = (SMBusEEPROMDevice *)dev;
 
-    eeprom = (SMBusEEPROMDevice *)smbus_device_init(bus, addr,
-        sizeof(SMBusEEPROMDevice));
-
-    eeprom->dev.quick_cmd = eeprom_quick_cmd;
-    eeprom->dev.send_byte = eeprom_send_byte;
-    eeprom->dev.receive_byte = eeprom_receive_byte;
-    eeprom->dev.write_data = eeprom_write_data;
-    eeprom->dev.read_data = eeprom_read_data;
-    eeprom->data = buf;
+    /* FIXME: Should be a blob rather than a ptr.  */
+    eeprom->data = qdev_get_prop_ptr(&dev->i2c.qdev, "data");
     eeprom->offset = 0;
 }
+
+static SMBusDeviceInfo smbus_eeprom_info = {
+    .init = smbus_eeprom_init,
+    .quick_cmd = eeprom_quick_cmd,
+    .send_byte = eeprom_send_byte,
+    .receive_byte = eeprom_receive_byte,
+    .write_data = eeprom_write_data,
+    .read_data = eeprom_read_data
+};
+
+static void smbus_eeprom_register_devices(void)
+{
+    smbus_register_device("smbus-eeprom", sizeof(SMBusEEPROMDevice),
+                          &smbus_eeprom_info);
+}
+
+device_init(smbus_eeprom_register_devices)