From: Ruslan Ruslichenko <[email protected]> Introduce the QOM skeleton for the Remote Port subsystem. This patch adds main types required for co-simulation:
- remote-port: An object that manages the lifecycle of the co-simulation session and will handle the character device backend in future patches. - remote-port-device: An interface that allows other QEMU devices to be connected to the Remote Port. This infrastructure enables QEMU to be linked with external simulators (e.g. SystemC). Signed-off-by: Edgar E. Iglesias <[email protected]> Signed-off-by: Takahiro Nakata <[email protected]> Signed-off-by: Ruslan Ruslichenko <[email protected]> --- hw/core/remote-port.c | 140 ++++++++++++++++++++++++++++++++++ include/hw/core/remote-port.h | 67 ++++++++++++++++ 2 files changed, 207 insertions(+) create mode 100644 hw/core/remote-port.c create mode 100644 include/hw/core/remote-port.h diff --git a/hw/core/remote-port.c b/hw/core/remote-port.c new file mode 100644 index 0000000000..c909a825f3 --- /dev/null +++ b/hw/core/remote-port.c @@ -0,0 +1,140 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * QEMU remote attach + * + * Copyright (c) 2013 Xilinx Inc + * Written by Edgar E. Iglesias <[email protected]> + * + * This code is licensed under the GNU GPL. + */ + +#include "qemu/osdep.h" +#include "system/system.h" +#include "chardev/char.h" +#include "system/cpus.h" +#include "system/cpu-timers.h" +#include "system/reset.h" +#include "hw/core/sysbus.h" +#include "hw/core/hw-error.h" +#include "qemu/sockets.h" +#include "qemu/thread.h" +#include "qemu/log.h" +#include "qapi/error.h" +#include "qemu/error-report.h" +#include "migration/vmstate.h" +#include "hw/core/qdev-properties.h" +#include "hw/core/qdev-properties-system.h" +#include "qemu/cutils.h" + +#ifndef _WIN32 +#include <sys/mman.h> +#endif + +#include "hw/core/remote-port-proto.h" +#include "hw/core/remote-port.h" + +#define D(x) +#define SYNCD(x) + +#ifndef REMOTE_PORT_ERR_DEBUG +#define REMOTE_PORT_DEBUG_LEVEL 0 +#else +#define REMOTE_PORT_DEBUG_LEVEL 1 +#endif + +#define DB_PRINT_L(level, ...) do { \ + if (REMOTE_PORT_DEBUG_LEVEL > level) { \ + fprintf(stderr, ": %s: ", __func__); \ + fprintf(stderr, ## __VA_ARGS__); \ + } \ +} while (0) + +#define REMOTE_PORT_CLASS(klass) \ + OBJECT_CLASS_CHECK(RemotePortClass, (klass), TYPE_REMOTE_PORT) + + +static void rp_reset(DeviceState *dev) +{ + RemotePort *s = REMOTE_PORT(dev); + + if (s->reset_done) { + return; + } + + s->reset_done = true; +} + +static void rp_realize(DeviceState *dev, Error **errp) +{ +} + +static void rp_unrealize(DeviceState *dev) +{ + RemotePort *s = REMOTE_PORT(dev); + + s->finalizing = true; +} + +static const VMStateDescription vmstate_rp = { + .name = TYPE_REMOTE_PORT, + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_END_OF_LIST(), + } +}; + +static void rp_prop_allow_set_link(const Object *obj, const char *name, + Object *val, Error **errp) +{ +} + +static void rp_init(Object *obj) +{ + RemotePort *s = REMOTE_PORT(obj); + int i; + + for (i = 0; i < REMOTE_PORT_MAX_DEVS; ++i) { + char *name = g_strdup_printf("remote-port-dev%d", i); + object_property_add_link(obj, name, TYPE_REMOTE_PORT_DEVICE, + (Object **)&s->devs[i], + rp_prop_allow_set_link, + OBJ_PROP_LINK_STRONG); + g_free(name); + } +} + +static void rp_class_init(ObjectClass *klass, const void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->legacy_reset = rp_reset; + dc->realize = rp_realize; + dc->unrealize = rp_unrealize; + dc->vmsd = &vmstate_rp; +} + +static const TypeInfo rp_info = { + .name = TYPE_REMOTE_PORT, + .parent = TYPE_DEVICE, + .instance_size = sizeof(RemotePort), + .instance_init = rp_init, + .class_init = rp_class_init, + .interfaces = (InterfaceInfo[]) { + { }, + }, +}; + +static const TypeInfo rp_device_info = { + .name = TYPE_REMOTE_PORT_DEVICE, + .parent = TYPE_INTERFACE, + .class_size = sizeof(RemotePortDeviceClass), +}; + +static void rp_register_types(void) +{ + type_register_static(&rp_info); + type_register_static(&rp_device_info); +} + +type_init(rp_register_types) diff --git a/include/hw/core/remote-port.h b/include/hw/core/remote-port.h new file mode 100644 index 0000000000..db71071c8e --- /dev/null +++ b/include/hw/core/remote-port.h @@ -0,0 +1,67 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * QEMU remote port. + * + * Copyright (c) 2013 Xilinx Inc + * Written by Edgar E. Iglesias <[email protected]> + * + * This code is licensed under the GNU GPL. + */ +#ifndef REMOTE_PORT_H__ +#define REMOTE_PORT_H__ + +#include <stdbool.h> +#include "hw/core/remote-port-proto.h" +#include "chardev/char.h" +#include "chardev/char-fe.h" +#include "qobject/qdict.h" + +#define TYPE_REMOTE_PORT_DEVICE "remote-port-device" + +#define REMOTE_PORT_DEVICE_CLASS(klass) \ + OBJECT_CLASS_CHECK(RemotePortDeviceClass, (klass), TYPE_REMOTE_PORT_DEVICE) +#define REMOTE_PORT_DEVICE_GET_CLASS(obj) \ + OBJECT_GET_CLASS(RemotePortDeviceClass, (obj), TYPE_REMOTE_PORT_DEVICE) +#define REMOTE_PORT_DEVICE(obj) \ + INTERFACE_CHECK(RemotePortDevice, (obj), TYPE_REMOTE_PORT_DEVICE) + +typedef struct RemotePort RemotePort; + +typedef struct RemotePortDevice { + /*< private >*/ + Object parent_obj; +} RemotePortDevice; + +typedef struct RemotePortDeviceClass { + /*< private >*/ + InterfaceClass parent_class; + + /*< public >*/ + /** + * ops - operations to perform when remote port packets are recieved for + * this device. Function N will be called for a remote port packet with + * cmd == N in the header. + * + * @obj - Remote port device to recieve packet + * @pkt - remote port packets + */ + + void (*ops[RP_CMD_max + 1])(RemotePortDevice *obj, struct rp_pkt *pkt); + +} RemotePortDeviceClass; + +#define TYPE_REMOTE_PORT "remote-port" +#define REMOTE_PORT(obj) OBJECT_CHECK(RemotePort, (obj), TYPE_REMOTE_PORT) + +struct RemotePort { + DeviceState parent; + + bool finalizing; + + bool reset_done; + +#define REMOTE_PORT_MAX_DEVS 1024 + RemotePortDevice *devs[REMOTE_PORT_MAX_DEVS]; +}; + +#endif -- 2.43.0
