diff options
Diffstat (limited to 'hw/serial.c')
| -rw-r--r-- | hw/serial.c | 143 |
1 files changed, 5 insertions, 138 deletions
diff --git a/hw/serial.c b/hw/serial.c index a421d1e7bc..78e219df5c 100644 --- a/hw/serial.c +++ b/hw/serial.c @@ -22,12 +22,10 @@ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ -#include "hw.h" + +#include "serial.h" #include "qemu-char.h" -#include "isa.h" -#include "pc.h" #include "qemu-timer.h" -#include "sysemu.h" //#define DEBUG_SERIAL @@ -93,8 +91,6 @@ #define UART_FCR_RFR 0x02 /* RCVR Fifo Reset */ #define UART_FCR_FE 0x01 /* FIFO Enable */ -#define UART_FIFO_LENGTH 16 /* 16550A Fifo Length */ - #define XMIT_FIFO 0 #define RECV_FIFO 1 #define MAX_XMIT_RETRY 4 @@ -107,64 +103,6 @@ do { fprintf(stderr, "serial: " fmt , ## __VA_ARGS__); } while (0) do {} while (0) #endif -typedef struct SerialFIFO { - uint8_t data[UART_FIFO_LENGTH]; - uint8_t count; - uint8_t itl; /* Interrupt Trigger Level */ - uint8_t tail; - uint8_t head; -} SerialFIFO; - -struct SerialState { - uint16_t divider; - uint8_t rbr; /* receive register */ - uint8_t thr; /* transmit holding register */ - uint8_t tsr; /* transmit shift register */ - uint8_t ier; - uint8_t iir; /* read only */ - uint8_t lcr; - uint8_t mcr; - uint8_t lsr; /* read only */ - uint8_t msr; /* read only */ - uint8_t scr; - uint8_t fcr; - uint8_t fcr_vmstate; /* we can't write directly this value - it has side effects */ - /* NOTE: this hidden state is necessary for tx irq generation as - it can be reset while reading iir */ - int thr_ipending; - qemu_irq irq; - CharDriverState *chr; - int last_break_enable; - int it_shift; - int baudbase; - int tsr_retry; - uint32_t wakeup; - - uint64_t last_xmit_ts; /* Time when the last byte was successfully sent out of the tsr */ - SerialFIFO recv_fifo; - SerialFIFO xmit_fifo; - - struct QEMUTimer *fifo_timeout_timer; - int timeout_ipending; /* timeout interrupt pending state */ - struct QEMUTimer *transmit_timer; - - - uint64_t char_transmit_time; /* time to transmit a char in ticks*/ - int poll_msl; - - struct QEMUTimer *modem_status_poll; - MemoryRegion io; -}; - -typedef struct ISASerialState { - ISADevice dev; - uint32_t index; - uint32_t iobase; - uint32_t isairq; - SerialState state; -} ISASerialState; - static void serial_receive1(void *opaque, const uint8_t *buf, int size); static void fifo_clear(SerialState *s, int fifo) @@ -687,7 +625,7 @@ static int serial_post_load(void *opaque, int version_id) return 0; } -static const VMStateDescription vmstate_serial = { +const VMStateDescription vmstate_serial = { .name = "serial", .version_id = 3, .minimum_version_id = 2, @@ -736,7 +674,7 @@ static void serial_reset(void *opaque) qemu_irq_lower(s->irq); } -static void serial_init_core(SerialState *s) +void serial_init_core(SerialState *s) { if (!s->chr) { fprintf(stderr, "Can't create serial device, empty char device\n"); @@ -761,54 +699,15 @@ void serial_set_frequency(SerialState *s, uint32_t frequency) serial_update_parameters(s); } -static const int isa_serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 }; -static const int isa_serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 }; - static const MemoryRegionPortio serial_portio[] = { { 0, 8, 1, .read = serial_ioport_read, .write = serial_ioport_write }, PORTIO_END_OF_LIST() }; -static const MemoryRegionOps serial_io_ops = { +const MemoryRegionOps serial_io_ops = { .old_portio = serial_portio }; -static int serial_isa_initfn(ISADevice *dev) -{ - static int index; - ISASerialState *isa = DO_UPCAST(ISASerialState, dev, dev); - SerialState *s = &isa->state; - - if (isa->index == -1) - isa->index = index; - if (isa->index >= MAX_SERIAL_PORTS) - return -1; - if (isa->iobase == -1) - isa->iobase = isa_serial_io[isa->index]; - if (isa->isairq == -1) - isa->isairq = isa_serial_irq[isa->index]; - index++; - - s->baudbase = 115200; - isa_init_irq(dev, &s->irq, isa->isairq); - serial_init_core(s); - qdev_set_legacy_instance_id(&dev->qdev, isa->iobase, 3); - - memory_region_init_io(&s->io, &serial_io_ops, s, "serial", 8); - isa_register_ioport(dev, &s->io, isa->iobase); - return 0; -} - -static const VMStateDescription vmstate_isa_serial = { - .name = "serial", - .version_id = 3, - .minimum_version_id = 2, - .fields = (VMStateField []) { - VMSTATE_STRUCT(state, ISASerialState, 0, vmstate_serial, SerialState), - VMSTATE_END_OF_LIST() - } -}; - SerialState *serial_init(int base, qemu_irq irq, int baudbase, CharDriverState *chr) { @@ -886,35 +785,3 @@ SerialState *serial_mm_init(MemoryRegion *address_space, serial_update_msl(s); return s; } - -static Property serial_isa_properties[] = { - DEFINE_PROP_UINT32("index", ISASerialState, index, -1), - DEFINE_PROP_HEX32("iobase", ISASerialState, iobase, -1), - DEFINE_PROP_UINT32("irq", ISASerialState, isairq, -1), - DEFINE_PROP_CHR("chardev", ISASerialState, state.chr), - DEFINE_PROP_UINT32("wakeup", ISASerialState, state.wakeup, 0), - DEFINE_PROP_END_OF_LIST(), -}; - -static void serial_isa_class_initfn(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - ISADeviceClass *ic = ISA_DEVICE_CLASS(klass); - ic->init = serial_isa_initfn; - dc->vmsd = &vmstate_isa_serial; - dc->props = serial_isa_properties; -} - -static TypeInfo serial_isa_info = { - .name = "isa-serial", - .parent = TYPE_ISA_DEVICE, - .instance_size = sizeof(ISASerialState), - .class_init = serial_isa_class_initfn, -}; - -static void serial_register_types(void) -{ - type_register_static(&serial_isa_info); -} - -type_init(serial_register_types) |