diff options
Diffstat (limited to 'hw/i2c')
| -rw-r--r-- | hw/i2c/aspeed_i2c.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/hw/i2c/aspeed_i2c.c b/hw/i2c/aspeed_i2c.c index ce16efc..a2dfa82 100644 --- a/hw/i2c/aspeed_i2c.c +++ b/hw/i2c/aspeed_i2c.c @@ -252,7 +252,8 @@ static void aspeed_i2c_bus_handle_cmd(AspeedI2CBus *bus, uint64_t value) aspeed_i2c_set_state(bus, I2CD_MACTIVE); } - if (bus->cmd & (I2CD_M_RX_CMD | I2CD_M_S_RX_CMD_LAST)) { + if ((bus->cmd & (I2CD_M_RX_CMD | I2CD_M_S_RX_CMD_LAST)) && + !(bus->intr_status & I2CD_INTR_RX_DONE)) { aspeed_i2c_handle_rx_cmd(bus); } @@ -274,6 +275,7 @@ static void aspeed_i2c_bus_write(void *opaque, hwaddr offset, uint64_t value, unsigned size) { AspeedI2CBus *bus = opaque; + bool handle_rx; switch (offset) { case I2CD_FUN_CTRL_REG: @@ -294,11 +296,17 @@ static void aspeed_i2c_bus_write(void *opaque, hwaddr offset, bus->intr_ctrl = value & 0x7FFF; break; case I2CD_INTR_STS_REG: + handle_rx = (bus->intr_status & I2CD_INTR_RX_DONE) && + (value & I2CD_INTR_RX_DONE); bus->intr_status &= ~(value & 0x7FFF); if (!bus->intr_status) { bus->controller->intr_status &= ~(1 << bus->id); qemu_irq_lower(bus->controller->irq); } + if (handle_rx && (bus->cmd & (I2CD_M_RX_CMD | I2CD_M_S_RX_CMD_LAST))) { + aspeed_i2c_handle_rx_cmd(bus); + aspeed_i2c_bus_raise_interrupt(bus); + } break; case I2CD_DEV_ADDR_REG: qemu_log_mask(LOG_UNIMP, "%s: slave mode not implemented\n", |