34         return 0;  in avr_usart_can_receive()
44     usart->data = buffer[0];  in avr_usart_receive()
54     uint8_t mode = ((usart->csrc & USART_CSRC_CSZ0) ? 1 : 0) |  in update_char_mask()
55         ((usart->csrc & USART_CSRC_CSZ1) ? 2 : 0) |  in update_char_mask()
56         ((usart->csrb & USART_CSRB_CSZ2) ? 4 : 0);  in update_char_mask()
58     case 0:  in update_char_mask()
59         usart->char_mask = 0b11111;  in update_char_mask()
62         usart->char_mask = 0b111111;  in update_char_mask()
65         usart->char_mask = 0b1111111;  in update_char_mask()
68         usart->char_mask = 0b11111111;  in update_char_mask()
77             "%s: Reserved character size 0x%x\n",  in update_char_mask()
86         usart->char_mask = 0b11111111;  in update_char_mask()
97     usart->csra = 0b00100000;  in avr_usart_reset()
98     usart->csrb = 0b00000000;  in avr_usart_reset()
99     usart->csrc = 0b00000110;  in avr_usart_reset()
100     usart->brrl = 0;  in avr_usart_reset()
101     usart->brrh = 0;  in avr_usart_reset()
103     qemu_set_irq(usart->rxc_irq, 0);  in avr_usart_reset()
104     qemu_set_irq(usart->txc_irq, 0);  in avr_usart_reset()
105     qemu_set_irq(usart->dre_irq, 0);  in avr_usart_reset()
115         return 0;  in avr_usart_read()
122             return 0;  in avr_usart_read()
128             data = 0;  in avr_usart_read()
130         usart->csra &= 0xff ^ USART_CSRA_RXC;  in avr_usart_read()
131         qemu_set_irq(usart->rxc_irq, 0);  in avr_usart_read()
147             "%s: Bad offset 0x%"HWADDR_PRIx"\n",  in avr_usart_read()
151     return 0;  in avr_usart_read()
160     assert((value & 0xff) == value);  in avr_usart_write()
177             usart->csra &= 0xff ^ USART_CSRA_TXC;  in avr_usart_write()
186         mask = 0b01000011;  in avr_usart_write()
188         value = (value & mask) | (usart->csra & (0xff ^ mask));  in avr_usart_write()
192             qemu_set_irq(usart->txc_irq, 0);  in avr_usart_write()
202         mask = 0b11111101;  in avr_usart_write()
204         value = (value & mask) | (usart->csrb & (0xff ^ mask));  in avr_usart_write()
212             (usart->csra & USART_CSRA_RXC)) ? 1 : 0);  in avr_usart_write()
215             (usart->csra & USART_CSRA_TXC)) ? 1 : 0);  in avr_usart_write()
218             (usart->csra & USART_CSRA_DRE)) ? 1 : 0);  in avr_usart_write()
244         usart->brrh = value & 0b00001111;  in avr_usart_write()
249             "%s: Bad offset 0x%"HWADDR_PRIx"\n",  in avr_usart_write()