2 files changed, 36 insertions, 5 deletions

diff --git a/include/hw/i2c/pm_smbus.h b/include/hw/i2c/pm_smbus.h
index 2a837afdcb..060d3c6ac0 100644
--- a/include/hw/i2c/pm_smbus.h
+++ b/include/hw/i2c/pm_smbus.h
@@ -1,6 +1,8 @@
 #ifndef PM_SMBUS_H
 #define PM_SMBUS_H
 
+#define PM_SMBUS_MAX_MSG_SIZE 32
+
 typedef struct PMSMBus {
     I2CBus *smbus;
     MemoryRegion io;
@@ -11,10 +13,26 @@ typedef struct PMSMBus {
     uint8_t smb_addr;
     uint8_t smb_data0;
     uint8_t smb_data1;
-    uint8_t smb_data[32];
-    uint8_t smb_index;
+    uint8_t smb_data[PM_SMBUS_MAX_MSG_SIZE];
+    uint8_t smb_blkdata;
+    uint8_t smb_auxctl;
+    uint32_t smb_index;
+
+    /* Set by pm_smbus.c */
+    void (*reset)(struct PMSMBus *s);
+
+    /* Set by the user. */
+    bool i2c_enable;
+    void (*set_irq)(struct PMSMBus *s, bool enabled);
+    void *opaque;
+
+    /* Internally used by pm_smbus. */
+
+    /* Set on block transfers after the last byte has been read, so the
+       INTR bit can be set at the right time. */
+    bool op_done;
 } PMSMBus;
 
-void pm_smbus_init(DeviceState *parent, PMSMBus *smb);
+void pm_smbus_init(DeviceState *parent, PMSMBus *smb, bool force_aux_blk);
 
 #endif /* PM_SMBUS_H */
diff --git a/include/hw/i2c/smbus.h b/include/hw/i2c/smbus.h
index 4fdba022c1..d8b1b9ee81 100644
--- a/include/hw/i2c/smbus.h
+++ b/include/hw/i2c/smbus.h
@@ -72,9 +72,22 @@ int smbus_read_byte(I2CBus *bus, uint8_t addr, uint8_t command);
 int smbus_write_byte(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t data);
 int smbus_read_word(I2CBus *bus, uint8_t addr, uint8_t command);
 int smbus_write_word(I2CBus *bus, uint8_t addr, uint8_t command, uint16_t data);
-int smbus_read_block(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t *data);
+
+/*
+ * Do a block transfer from an I2C device.  If recv_len is set, then the
+ * first received byte is a length field and is used to know how much data
+ * to receive.  Otherwise receive "len" bytes.  If send_cmd is set, send
+ * the command byte first before receiving the data.
+ */
+int smbus_read_block(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t *data,
+                     int len, bool recv_len, bool send_cmd);
+
+/*
+ * Do a block transfer to an I2C device.  If send_len is set, send the
+ * "len" value before the data.
+ */
 int smbus_write_block(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t *data,
-                      int len);
+                      int len, bool send_len);
 
 void smbus_eeprom_init_one(I2CBus *smbus, uint8_t address, uint8_t *eeprom_buf);
 void smbus_eeprom_init(I2CBus *smbus, int nb_eeprom,