* is a real serial device.
*/
+#include "qemu/osdep.h"
#include "hw/char/imx_serial.h"
#include "sysemu/sysemu.h"
-#include "sysemu/char.h"
-#include "hw/arm/imx.h"
+#include "qemu/log.h"
-//#define DEBUG_SERIAL 1
-#ifdef DEBUG_SERIAL
-#define DPRINTF(fmt, args...) \
-do { printf("%s: " fmt , TYPE_IMX_SERIAL, ##args); } while (0)
-#else
-#define DPRINTF(fmt, args...) do {} while (0)
+#ifndef DEBUG_IMX_UART
+#define DEBUG_IMX_UART 0
#endif
-/*
- * Define to 1 for messages about attempts to
- * access unimplemented registers or similar.
- */
-//#define DEBUG_IMPLEMENTATION 1
-#ifdef DEBUG_IMPLEMENTATION
-# define IPRINTF(fmt, args...) \
- do { fprintf(stderr, "%s: " fmt, TYPE_IMX_SERIAL, ##args); } while (0)
-#else
-# define IPRINTF(fmt, args...) do {} while (0)
-#endif
+#define DPRINTF(fmt, args...) \
+ do { \
+ if (DEBUG_IMX_UART) { \
+ fprintf(stderr, "[%s]%s: " fmt , TYPE_IMX_SERIAL, \
+ __func__, ##args); \
+ } \
+ } while (0)
static const VMStateDescription vmstate_imx_serial = {
.name = TYPE_IMX_SERIAL,
uint32_t flags;
flags = (s->usr1 & s->ucr1) & (USR1_TRDY|USR1_RRDY);
- if (!(s->ucr1 & UCR1_TXMPTYEN)) {
+ if (s->ucr1 & UCR1_TXMPTYEN) {
+ flags |= (s->uts1 & UTS1_TXEMPTY);
+ } else {
flags &= ~USR1_TRDY;
}
IMXSerialState *s = (IMXSerialState *)opaque;
uint32_t c;
- DPRINTF("read(offset=%x)\n", offset >> 2);
+ DPRINTF("read(offset=0x%" HWADDR_PRIx ")\n", offset);
+
switch (offset >> 2) {
case 0x0: /* URXD */
c = s->readbuff;
s->usr2 &= ~USR2_RDR;
s->uts1 |= UTS1_RXEMPTY;
imx_update(s);
- if (s->chr) {
- qemu_chr_accept_input(s->chr);
- }
+ qemu_chr_fe_accept_input(&s->chr);
}
return c;
return 0x0; /* TODO */
default:
- IPRINTF("%s: bad offset: 0x%x\n", __func__, (int)offset);
+ qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Bad register at offset 0x%"
+ HWADDR_PRIx "\n", TYPE_IMX_SERIAL, __func__, offset);
return 0;
}
}
uint64_t value, unsigned size)
{
IMXSerialState *s = (IMXSerialState *)opaque;
+ Chardev *chr = qemu_chr_fe_get_driver(&s->chr);
unsigned char ch;
- DPRINTF("write(offset=%x, value = %x) to %s\n",
- offset >> 2,
- (unsigned int)value, s->chr ? s->chr->label : "NODEV");
+ DPRINTF("write(offset=0x%" HWADDR_PRIx ", value = 0x%x) to %s\n",
+ offset, (unsigned int)value, chr ? chr->label : "NODEV");
switch (offset >> 2) {
case 0x10: /* UTXD */
ch = value;
if (s->ucr2 & UCR2_TXEN) {
- if (s->chr) {
- qemu_chr_fe_write(s->chr, &ch, 1);
- }
+ /* XXX this blocks entire thread. Rewrite to use
+ * qemu_chr_fe_write and background I/O callbacks */
+ qemu_chr_fe_write_all(&s->chr, &ch, 1);
s->usr1 &= ~USR1_TRDY;
imx_update(s);
s->usr1 |= USR1_TRDY;
case 0x20: /* UCR1 */
s->ucr1 = value & 0xffff;
+
DPRINTF("write(ucr1=%x)\n", (unsigned int)value);
+
imx_update(s);
break;
}
if (value & UCR2_RXEN) {
if (!(s->ucr2 & UCR2_RXEN)) {
- if (s->chr) {
- qemu_chr_accept_input(s->chr);
- }
+ qemu_chr_fe_accept_input(&s->chr);
}
}
s->ucr2 = value & 0xffff;
case 0x2d: /* UTS1 */
case 0x23: /* UCR4 */
- IPRINTF("Unimplemented Register %x written to\n", offset >> 2);
+ qemu_log_mask(LOG_UNIMP, "[%s]%s: Unimplemented reg 0x%"
+ HWADDR_PRIx "\n", TYPE_IMX_SERIAL, __func__, offset);
/* TODO */
break;
default:
- IPRINTF("%s: Bad offset 0x%x\n", __func__, (int)offset);
+ qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Bad register at offset 0x%"
+ HWADDR_PRIx "\n", TYPE_IMX_SERIAL, __func__, offset);
}
}
static void imx_put_data(void *opaque, uint32_t value)
{
IMXSerialState *s = (IMXSerialState *)opaque;
+
DPRINTF("received char\n");
+
s->usr1 |= USR1_RRDY;
s->usr2 |= USR2_RDR;
s->uts1 &= ~UTS1_RXEMPTY;
{
IMXSerialState *s = IMX_SERIAL(dev);
- if (s->chr) {
- qemu_chr_add_handlers(s->chr, imx_can_receive, imx_receive,
- imx_event, s);
- } else {
- DPRINTF("No char dev for uart at 0x%lx\n",
- (unsigned long)s->iomem.ram_addr);
- }
+ DPRINTF("char dev for uart: %p\n", qemu_chr_fe_get_driver(&s->chr));
+
+ qemu_chr_fe_set_handlers(&s->chr, imx_can_receive, imx_receive,
+ imx_event, NULL, s, NULL, true);
}
static void imx_serial_init(Object *obj)
sysbus_init_irq(sbd, &s->irq);
}
-void imx_serial_create(int uart, const hwaddr addr, qemu_irq irq)
-{
- DeviceState *dev;
- SysBusDevice *bus;
- CharDriverState *chr;
- const char chr_name[] = "serial";
- char label[ARRAY_SIZE(chr_name) + 1];
-
- dev = qdev_create(NULL, TYPE_IMX_SERIAL);
-
- if (uart >= MAX_SERIAL_PORTS) {
- hw_error("Cannot assign uart %d: QEMU supports only %d ports\n",
- uart, MAX_SERIAL_PORTS);
- }
- chr = serial_hds[uart];
- if (!chr) {
- snprintf(label, ARRAY_SIZE(label), "%s%d", chr_name, uart);
- chr = qemu_chr_new(label, "null", NULL);
- if (!(chr)) {
- hw_error("Can't assign serial port to imx-uart%d.\n", uart);
- }
- }
-
- qdev_prop_set_chr(dev, "chardev", chr);
- bus = SYS_BUS_DEVICE(dev);
- qdev_init_nofail(dev);
- if (addr != (hwaddr)-1) {
- sysbus_mmio_map(bus, 0, addr);
- }
- sysbus_connect_irq(bus, 0, irq);
-
-}
-
-
static Property imx_serial_properties[] = {
DEFINE_PROP_CHR("chardev", IMXSerialState, chr),
DEFINE_PROP_END_OF_LIST(),
projects / qemu.git / blobdiff