aspeed/i2c: Enable SLAVE_ADDR_RX_MATCH always

There is no 'slave match interrupt' enable bit in the Interrupt
Control Register. Consider it is always enabled and extend the mask
value 'bus->regs[intr_ctrl_reg]' with the SLAVE_ADDR_RX_MATCH bit when
the interrupt is raised.

Signed-off-by: Cédric Le Goater <clg@kaod.org>

hw/i2c/aspeed_i2c.c

@@ -32,15 +32,20 @@
 #include "hw/registerfields.h"
 #include "trace.h"
 
+/* Enable SLAVE_ADDR_RX_MATCH always */
+#define R_I2CD_INTR_STS_ALWAYS_ENABLE  R_I2CD_INTR_STS_SLAVE_ADDR_RX_MATCH_MASK
+
 static inline void aspeed_i2c_bus_raise_interrupt(AspeedI2CBus *bus)
 {
     AspeedI2CClass *aic = ASPEED_I2C_GET_CLASS(bus->controller);
     uint32_t reg_intr_sts = aspeed_i2c_bus_intr_sts_offset(bus);
     uint32_t intr_ctrl_reg = aspeed_i2c_bus_intr_ctrl_offset(bus);
+    uint32_t intr_ctrl_mask = bus->regs[intr_ctrl_reg] |
+        R_I2CD_INTR_STS_ALWAYS_ENABLE;
     bool raise_irq;
 
     if (trace_event_get_state_backends(TRACE_ASPEED_I2C_BUS_RAISE_INTERRUPT)) {
-        g_autofree char *buf = g_strdup_printf("%s%s%s%s%s%s",
+        g_autofree char *buf = g_strdup_printf("%s%s%s%s%s%s%s",
                aspeed_i2c_bus_pkt_mode_en(bus) &&
                ARRAY_FIELD_EX32(bus->regs, I2CM_INTR_STS, PKT_CMD_DONE) ?
                                                "pktdone|" : "",
@@ -50,6 +55,8 @@ static inline void aspeed_i2c_bus_raise_interrupt(AspeedI2CBus *bus)
                                                "ack|" : "",
                SHARED_ARRAY_FIELD_EX32(bus->regs, reg_intr_sts, RX_DONE) ?
                                                "done|" : "",
+               ARRAY_FIELD_EX32(bus->regs, I2CD_INTR_STS, SLAVE_ADDR_RX_MATCH) ?
+                                               "slave-match|" : "",
                SHARED_ARRAY_FIELD_EX32(bus->regs, reg_intr_sts, NORMAL_STOP) ?
                                                "normal|" : "",
                SHARED_ARRAY_FIELD_EX32(bus->regs, reg_intr_sts, ABNORMAL) ?
@@ -58,11 +65,11 @@ static inline void aspeed_i2c_bus_raise_interrupt(AspeedI2CBus *bus)
            trace_aspeed_i2c_bus_raise_interrupt(bus->regs[reg_intr_sts], buf);
     }
 
-    raise_irq = bus->regs[reg_intr_sts] & bus->regs[intr_ctrl_reg];
+    raise_irq = bus->regs[reg_intr_sts] & intr_ctrl_mask ;
 
     /* In packet mode we don't mask off INTR_STS */
     if (!aspeed_i2c_bus_pkt_mode_en(bus)) {
-        bus->regs[reg_intr_sts] &= bus->regs[intr_ctrl_reg];
+        bus->regs[reg_intr_sts] &= intr_ctrl_mask;
     }
 
     if (raise_irq) {