* 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 "exec-memory.h"
//#define DEBUG_SERIAL
#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
-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;
-
- 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;
-};
-
-typedef struct ISASerialState {
- ISADevice dev;
- uint32_t index;
- uint32_t iobase;
- uint32_t isairq;
- SerialState state;
-} ISASerialState;
+#ifdef DEBUG_SERIAL
+#define DPRINTF(fmt, ...) \
+do { fprintf(stderr, "serial: " fmt , ## __VA_ARGS__); } while (0)
+#else
+#define DPRINTF(fmt, ...) \
+do {} while (0)
+#endif
static void serial_receive1(void *opaque, const uint8_t *buf, int size);
ssp.data_bits = data_bits;
ssp.stop_bits = stop_bits;
s->char_transmit_time = (get_ticks_per_sec() / speed) * frame_size;
- qemu_chr_ioctl(s->chr, CHR_IOCTL_SERIAL_SET_PARAMS, &ssp);
-#if 0
- printf("speed=%d parity=%c data=%d stop=%d\n",
+ qemu_chr_fe_ioctl(s->chr, CHR_IOCTL_SERIAL_SET_PARAMS, &ssp);
+
+ DPRINTF("speed=%d parity=%c data=%d stop=%d\n",
speed, parity, data_bits, stop_bits);
-#endif
}
static void serial_update_msl(SerialState *s)
qemu_del_timer(s->modem_status_poll);
- if (qemu_chr_ioctl(s->chr,CHR_IOCTL_SERIAL_GET_TIOCM, &flags) == -ENOTSUP) {
+ if (qemu_chr_fe_ioctl(s->chr,CHR_IOCTL_SERIAL_GET_TIOCM, &flags) == -ENOTSUP) {
s->poll_msl = -1;
return;
}
We'll be lazy and poll only every 10ms, and only poll it at all if MSI interrupts are turned on */
if (s->poll_msl)
- qemu_mod_timer(s->modem_status_poll, qemu_get_clock(vm_clock) + get_ticks_per_sec() / 100);
+ qemu_mod_timer(s->modem_status_poll, qemu_get_clock_ns(vm_clock) + get_ticks_per_sec() / 100);
}
static void serial_xmit(void *opaque)
{
SerialState *s = opaque;
- uint64_t new_xmit_ts = qemu_get_clock(vm_clock);
+ uint64_t new_xmit_ts = qemu_get_clock_ns(vm_clock);
if (s->tsr_retry <= 0) {
if (s->fcr & UART_FCR_FE) {
s->tsr = fifo_get(s,XMIT_FIFO);
if (!s->xmit_fifo.count)
s->lsr |= UART_LSR_THRE;
+ } else if ((s->lsr & UART_LSR_THRE)) {
+ return;
} else {
s->tsr = s->thr;
s->lsr |= UART_LSR_THRE;
+ s->lsr &= ~UART_LSR_TEMT;
}
}
if (s->mcr & UART_MCR_LOOP) {
/* in loopback mode, say that we just received a char */
serial_receive1(s, &s->tsr, 1);
- } else if (qemu_chr_write(s->chr, &s->tsr, 1) != 1) {
- if ((s->tsr_retry > 0) && (s->tsr_retry <= MAX_XMIT_RETRY)) {
+ } else if (qemu_chr_fe_write(s->chr, &s->tsr, 1) != 1) {
+ if ((s->tsr_retry >= 0) && (s->tsr_retry <= MAX_XMIT_RETRY)) {
s->tsr_retry++;
qemu_mod_timer(s->transmit_timer, new_xmit_ts + s->char_transmit_time);
return;
s->tsr_retry = 0;
}
- s->last_xmit_ts = qemu_get_clock(vm_clock);
+ s->last_xmit_ts = qemu_get_clock_ns(vm_clock);
if (!(s->lsr & UART_LSR_THRE))
qemu_mod_timer(s->transmit_timer, s->last_xmit_ts + s->char_transmit_time);
}
-static void serial_ioport_write(void *opaque, uint32_t addr, uint32_t val)
+static void serial_ioport_write(void *opaque, hwaddr addr, uint64_t val,
+ unsigned size)
{
SerialState *s = opaque;
addr &= 7;
-#ifdef DEBUG_SERIAL
- printf("serial: write addr=0x%02x val=0x%02x\n", addr, val);
-#endif
+ DPRINTF("write addr=0x%02x val=0x%02x\n", addr, val);
switch(addr) {
default:
case 0:
break_enable = (val >> 6) & 1;
if (break_enable != s->last_break_enable) {
s->last_break_enable = break_enable;
- qemu_chr_ioctl(s->chr, CHR_IOCTL_SERIAL_SET_BREAK,
+ qemu_chr_fe_ioctl(s->chr, CHR_IOCTL_SERIAL_SET_BREAK,
&break_enable);
}
}
if (s->poll_msl >= 0 && old_mcr != s->mcr) {
- qemu_chr_ioctl(s->chr,CHR_IOCTL_SERIAL_GET_TIOCM, &flags);
+ qemu_chr_fe_ioctl(s->chr,CHR_IOCTL_SERIAL_GET_TIOCM, &flags);
flags &= ~(CHR_TIOCM_RTS | CHR_TIOCM_DTR);
if (val & UART_MCR_DTR)
flags |= CHR_TIOCM_DTR;
- qemu_chr_ioctl(s->chr,CHR_IOCTL_SERIAL_SET_TIOCM, &flags);
+ qemu_chr_fe_ioctl(s->chr,CHR_IOCTL_SERIAL_SET_TIOCM, &flags);
/* Update the modem status after a one-character-send wait-time, since there may be a response
from the device/computer at the other end of the serial line */
- qemu_mod_timer(s->modem_status_poll, qemu_get_clock(vm_clock) + s->char_transmit_time);
+ qemu_mod_timer(s->modem_status_poll, qemu_get_clock_ns(vm_clock) + s->char_transmit_time);
}
}
break;
}
}
-static uint32_t serial_ioport_read(void *opaque, uint32_t addr)
+static uint64_t serial_ioport_read(void *opaque, hwaddr addr, unsigned size)
{
SerialState *s = opaque;
uint32_t ret;
if (s->recv_fifo.count == 0)
s->lsr &= ~(UART_LSR_DR | UART_LSR_BI);
else
- qemu_mod_timer(s->fifo_timeout_timer, qemu_get_clock (vm_clock) + s->char_transmit_time * 4);
+ qemu_mod_timer(s->fifo_timeout_timer, qemu_get_clock_ns (vm_clock) + s->char_transmit_time * 4);
s->timeout_ipending = 0;
} else {
ret = s->rbr;
ret = s->scr;
break;
}
-#ifdef DEBUG_SERIAL
- printf("serial: read addr=0x%02x val=0x%02x\n", addr, ret);
-#endif
+ DPRINTF("read addr=0x%02x val=0x%02x\n", addr, ret);
return ret;
}
static void serial_receive1(void *opaque, const uint8_t *buf, int size)
{
SerialState *s = opaque;
+
+ if (s->wakeup) {
+ qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER);
+ }
if(s->fcr & UART_FCR_FE) {
int i;
for (i = 0; i < size; i++) {
}
s->lsr |= UART_LSR_DR;
/* call the timeout receive callback in 4 char transmit time */
- qemu_mod_timer(s->fifo_timeout_timer, qemu_get_clock (vm_clock) + s->char_transmit_time * 4);
+ qemu_mod_timer(s->fifo_timeout_timer, qemu_get_clock_ns (vm_clock) + s->char_transmit_time * 4);
} else {
if (s->lsr & UART_LSR_DR)
s->lsr |= UART_LSR_OE;
static void serial_event(void *opaque, int event)
{
SerialState *s = opaque;
-#ifdef DEBUG_SERIAL
- printf("serial: event %x\n", event);
-#endif
+ DPRINTF("event %x\n", event);
if (event == CHR_EVENT_BREAK)
serial_receive_break(s);
}
s->fcr_vmstate = 0;
}
/* Initialize fcr via setter to perform essential side-effects */
- serial_ioport_write(s, 0x02, s->fcr_vmstate);
+ serial_ioport_write(s, 0x02, s->fcr_vmstate, 1);
+ serial_update_parameters(s);
return 0;
}
-static const VMStateDescription vmstate_serial = {
+const VMStateDescription vmstate_serial = {
.name = "serial",
.version_id = 3,
.minimum_version_id = 2,
fifo_clear(s,RECV_FIFO);
fifo_clear(s,XMIT_FIFO);
- s->last_xmit_ts = qemu_get_clock(vm_clock);
+ s->last_xmit_ts = qemu_get_clock_ns(vm_clock);
s->thr_ipending = 0;
s->last_break_enable = 0;
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");
exit(1);
}
- s->modem_status_poll = qemu_new_timer(vm_clock, (QEMUTimerCB *) serial_update_msl, s);
+ s->modem_status_poll = qemu_new_timer_ns(vm_clock, (QEMUTimerCB *) serial_update_msl, s);
- s->fifo_timeout_timer = qemu_new_timer(vm_clock, (QEMUTimerCB *) fifo_timeout_int, s);
- s->transmit_timer = qemu_new_timer(vm_clock, (QEMUTimerCB *) serial_xmit, s);
+ s->fifo_timeout_timer = qemu_new_timer_ns(vm_clock, (QEMUTimerCB *) fifo_timeout_int, s);
+ s->transmit_timer = qemu_new_timer_ns(vm_clock, (QEMUTimerCB *) serial_xmit, s);
qemu_register_reset(serial_reset, s);
serial_event, s);
}
+void serial_exit_core(SerialState *s)
+{
+ qemu_chr_add_handlers(s->chr, NULL, NULL, NULL, NULL);
+ qemu_unregister_reset(serial_reset, s);
+}
+
/* Change the main reference oscillator frequency. */
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 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);
-
- register_ioport_write(isa->iobase, 8, 1, serial_ioport_write, s);
- register_ioport_read(isa->iobase, 8, 1, serial_ioport_read, s);
- return 0;
-}
-
-SerialState *serial_isa_init(int index, CharDriverState *chr)
-{
- ISADevice *dev;
-
- dev = isa_create("isa-serial");
- qdev_prop_set_uint32(&dev->qdev, "index", index);
- qdev_prop_set_chr(&dev->qdev, "chardev", chr);
- if (qdev_init(&dev->qdev) < 0)
- return NULL;
- return &DO_UPCAST(ISASerialState, dev, dev)->state;
-}
-
-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()
- }
+const MemoryRegionOps serial_io_ops = {
+ .read = serial_ioport_read,
+ .write = serial_ioport_write,
+ .impl = {
+ .min_access_size = 1,
+ .max_access_size = 1,
+ },
+ .endianness = DEVICE_LITTLE_ENDIAN,
};
SerialState *serial_init(int base, qemu_irq irq, int baudbase,
- CharDriverState *chr)
+ CharDriverState *chr, MemoryRegion *system_io)
{
SerialState *s;
- s = qemu_mallocz(sizeof(SerialState));
+ s = g_malloc0(sizeof(SerialState));
s->irq = irq;
s->baudbase = baudbase;
s->chr = chr;
serial_init_core(s);
- vmstate_register(base, &vmstate_serial, s);
+ vmstate_register(NULL, base, &vmstate_serial, s);
+
+ memory_region_init_io(&s->io, &serial_io_ops, s, "serial", 8);
+ memory_region_add_subregion(system_io, base, &s->io);
- register_ioport_write(base, 8, 1, serial_ioport_write, s);
- register_ioport_read(base, 8, 1, serial_ioport_read, s);
return s;
}
/* Memory mapped interface */
-static uint32_t serial_mm_readb(void *opaque, target_phys_addr_t addr)
+static uint64_t serial_mm_read(void *opaque, hwaddr addr,
+ unsigned size)
{
SerialState *s = opaque;
-
- return serial_ioport_read(s, addr >> s->it_shift) & 0xFF;
-}
-
-static void serial_mm_writeb(void *opaque, target_phys_addr_t addr,
- uint32_t value)
-{
- SerialState *s = opaque;
-
- serial_ioport_write(s, addr >> s->it_shift, value & 0xFF);
+ return serial_ioport_read(s, addr >> s->it_shift, 1);
}
-static uint32_t serial_mm_readw_be(void *opaque, target_phys_addr_t addr)
+static void serial_mm_write(void *opaque, hwaddr addr,
+ uint64_t value, unsigned size)
{
SerialState *s = opaque;
- uint32_t val;
-
- val = serial_ioport_read(s, addr >> s->it_shift) & 0xFFFF;
- val = bswap16(val);
- return val;
-}
-
-static uint32_t serial_mm_readw_le(void *opaque, target_phys_addr_t addr)
-{
- SerialState *s = opaque;
- uint32_t val;
-
- val = serial_ioport_read(s, addr >> s->it_shift) & 0xFFFF;
- return val;
+ value &= ~0u >> (32 - (size * 8));
+ serial_ioport_write(s, addr >> s->it_shift, value, 1);
}
-static void serial_mm_writew_be(void *opaque, target_phys_addr_t addr,
- uint32_t value)
-{
- SerialState *s = opaque;
-
- value = bswap16(value);
- serial_ioport_write(s, addr >> s->it_shift, value & 0xFFFF);
-}
-
-static void serial_mm_writew_le(void *opaque, target_phys_addr_t addr,
- uint32_t value)
-{
- SerialState *s = opaque;
-
- serial_ioport_write(s, addr >> s->it_shift, value & 0xFFFF);
-}
-
-static uint32_t serial_mm_readl_be(void *opaque, target_phys_addr_t addr)
-{
- SerialState *s = opaque;
- uint32_t val;
-
- val = serial_ioport_read(s, addr >> s->it_shift);
- val = bswap32(val);
- return val;
-}
-
-static uint32_t serial_mm_readl_le(void *opaque, target_phys_addr_t addr)
-{
- SerialState *s = opaque;
- uint32_t val;
-
- val = serial_ioport_read(s, addr >> s->it_shift);
- return val;
-}
-
-static void serial_mm_writel_be(void *opaque, target_phys_addr_t addr,
- uint32_t value)
-{
- SerialState *s = opaque;
-
- value = bswap32(value);
- serial_ioport_write(s, addr >> s->it_shift, value);
-}
-
-static void serial_mm_writel_le(void *opaque, target_phys_addr_t addr,
- uint32_t value)
-{
- SerialState *s = opaque;
-
- serial_ioport_write(s, addr >> s->it_shift, value);
-}
-
-static CPUReadMemoryFunc * const serial_mm_read_be[] = {
- &serial_mm_readb,
- &serial_mm_readw_be,
- &serial_mm_readl_be,
-};
-
-static CPUWriteMemoryFunc * const serial_mm_write_be[] = {
- &serial_mm_writeb,
- &serial_mm_writew_be,
- &serial_mm_writel_be,
-};
-
-static CPUReadMemoryFunc * const serial_mm_read_le[] = {
- &serial_mm_readb,
- &serial_mm_readw_le,
- &serial_mm_readl_le,
-};
-
-static CPUWriteMemoryFunc * const serial_mm_write_le[] = {
- &serial_mm_writeb,
- &serial_mm_writew_le,
- &serial_mm_writel_le,
+static const MemoryRegionOps serial_mm_ops[3] = {
+ [DEVICE_NATIVE_ENDIAN] = {
+ .read = serial_mm_read,
+ .write = serial_mm_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ },
+ [DEVICE_LITTLE_ENDIAN] = {
+ .read = serial_mm_read,
+ .write = serial_mm_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ },
+ [DEVICE_BIG_ENDIAN] = {
+ .read = serial_mm_read,
+ .write = serial_mm_write,
+ .endianness = DEVICE_BIG_ENDIAN,
+ },
};
-SerialState *serial_mm_init (target_phys_addr_t base, int it_shift,
- qemu_irq irq, int baudbase,
- CharDriverState *chr, int ioregister,
- int be)
+SerialState *serial_mm_init(MemoryRegion *address_space,
+ hwaddr base, int it_shift,
+ qemu_irq irq, int baudbase,
+ CharDriverState *chr, enum device_endian end)
{
SerialState *s;
- int s_io_memory;
- s = qemu_mallocz(sizeof(SerialState));
+ s = g_malloc0(sizeof(SerialState));
s->it_shift = it_shift;
s->irq = irq;
s->chr = chr;
serial_init_core(s);
- vmstate_register(base, &vmstate_serial, s);
+ vmstate_register(NULL, base, &vmstate_serial, s);
+
+ memory_region_init_io(&s->io, &serial_mm_ops[end], s,
+ "serial", 8 << it_shift);
+ memory_region_add_subregion(address_space, base, &s->io);
- if (ioregister) {
- if (be) {
- s_io_memory = cpu_register_io_memory(serial_mm_read_be,
- serial_mm_write_be, s);
- } else {
- s_io_memory = cpu_register_io_memory(serial_mm_read_le,
- serial_mm_write_le, s);
- }
- cpu_register_physical_memory(base, 8 << it_shift, s_io_memory);
- }
serial_update_msl(s);
return s;
}
-
-static ISADeviceInfo serial_isa_info = {
- .qdev.name = "isa-serial",
- .qdev.size = sizeof(ISASerialState),
- .qdev.vmsd = &vmstate_isa_serial,
- .init = serial_isa_initfn,
- .qdev.props = (Property[]) {
- 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_END_OF_LIST(),
- },
-};
-
-static void serial_register_devices(void)
-{
- isa_qdev_register(&serial_isa_info);
-}
-
-device_init(serial_register_devices)
projects / mirror_qemu.git / blobdiff