@@ -31,6 +31,7 @@ CONFIG_ESP_PCI=y
CONFIG_SERIAL=y
CONFIG_SERIAL_ISA=y
CONFIG_SERIAL_PCI=y
+CONFIG_CAN_BUS=y
CONFIG_IPACK=y
CONFIG_WDT_IB6300ESB=y
CONFIG_PCI_TESTDEV=y
@@ -6,6 +6,7 @@ devices-dirs-$(CONFIG_SOFTMMU) += block/
devices-dirs-$(CONFIG_SOFTMMU) += bt/
devices-dirs-$(CONFIG_SOFTMMU) += char/
devices-dirs-$(CONFIG_SOFTMMU) += cpu/
+devices-dirs-$(CONFIG_SOFTMMU) += can/
devices-dirs-$(CONFIG_SOFTMMU) += display/
devices-dirs-$(CONFIG_SOFTMMU) += dma/
devices-dirs-$(CONFIG_SOFTMMU) += gpio/
new file mode 100644
@@ -0,0 +1,123 @@
+/*
+ * CAN common CAN bus emulation support
+ *
+ * Copyright (c) 2013-2014 Jin Yang
+ * Copyright (c) 2014-2018 Pavel Pisa
+ *
+ * Initial development supported by Google GSoC 2013 from RTEMS project slot
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef NET_CAN_EMU_H
+#define NET_CAN_EMU_H
+
+#include "qom/object.h"
+
+/* NOTE: the following two structures is copied from <linux/can.h>. */
+
+/*
+ * Controller Area Network Identifier structure
+ *
+ * bit 0-28 : CAN identifier (11/29 bit)
+ * bit 29 : error frame flag (0 = data frame, 1 = error frame)
+ * bit 30 : remote transmission request flag (1 = rtr frame)
+ * bit 31 : frame format flag (0 = standard 11 bit, 1 = extended 29 bit)
+ */
+typedef uint32_t qemu_canid_t;
+
+typedef struct qemu_can_frame {
+ qemu_canid_t can_id; /* 32 bit CAN_ID + EFF/RTR/ERR flags */
+ uint8_t can_dlc; /* data length code: 0 .. 8 */
+ uint8_t data[8] QEMU_ALIGNED(8);
+} qemu_can_frame;
+
+/* Keep defines for QEMU separate from Linux ones for now */
+
+#define QEMU_CAN_EFF_FLAG 0x80000000U /* EFF/SFF is set in the MSB */
+#define QEMU_CAN_RTR_FLAG 0x40000000U /* remote transmission request */
+#define QEMU_CAN_ERR_FLAG 0x20000000U /* error message frame */
+
+#define QEMU_CAN_SFF_MASK 0x000007FFU /* standard frame format (SFF) */
+#define QEMU_CAN_EFF_MASK 0x1FFFFFFFU /* extended frame format (EFF) */
+
+/**
+ * struct qemu_can_filter - CAN ID based filter in can_register().
+ * @can_id: relevant bits of CAN ID which are not masked out.
+ * @can_mask: CAN mask (see description)
+ *
+ * Description:
+ * A filter matches, when
+ *
+ * <received_can_id> & mask == can_id & mask
+ *
+ * The filter can be inverted (QEMU_CAN_INV_FILTER bit set in can_id) or it can
+ * filter for error message frames (QEMU_CAN_ERR_FLAG bit set in mask).
+ */
+typedef struct qemu_can_filter {
+ qemu_canid_t can_id;
+ qemu_canid_t can_mask;
+} qemu_can_filter;
+
+/* QEMU_CAN_INV_FILTER can be set in qemu_can_filter.can_id */
+#define QEMU_CAN_INV_FILTER 0x20000000U
+
+typedef struct CanBusClientState CanBusClientState;
+typedef struct CanBusState CanBusState;
+
+typedef struct CanBusClientInfo {
+ int (*can_receive)(CanBusClientState *);
+ ssize_t (*receive)(CanBusClientState *,
+ const struct qemu_can_frame *frames, size_t frames_cnt);
+} CanBusClientInfo;
+
+struct CanBusClientState {
+ CanBusClientInfo *info;
+ CanBusState *bus;
+ int link_down;
+ QTAILQ_ENTRY(CanBusClientState) next;
+ CanBusClientState *peer;
+ char *model;
+ char *name;
+ void (*destructor)(CanBusClientState *);
+};
+
+#define TYPE_CAN_BUS "can-bus"
+#define CAN_BUS_CLASS(klass) \
+ OBJECT_CLASS_CHECK(CanBusClass, (klass), TYPE_CAN_BUS)
+#define CAN_BUS_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(CanBusClass, (obj), TYPE_CAN_BUS)
+#define CAN_BUS(obj) \
+ OBJECT_CHECK(CanBusState, (obj), TYPE_CAN_BUS)
+
+int can_bus_filter_match(struct qemu_can_filter *filter, qemu_canid_t can_id);
+
+int can_bus_insert_client(CanBusState *bus, CanBusClientState *client);
+
+int can_bus_remove_client(CanBusClientState *client);
+
+ssize_t can_bus_client_send(CanBusClientState *,
+ const struct qemu_can_frame *frames,
+ size_t frames_cnt);
+
+int can_bus_client_set_filters(CanBusClientState *,
+ const struct qemu_can_filter *filters,
+ size_t filters_cnt);
+
+#endif
new file mode 100644
@@ -0,0 +1,55 @@
+/*
+ * CAN common CAN bus emulation support
+ *
+ * Copyright (c) 2013-2014 Jin Yang
+ * Copyright (c) 2014-2018 Pavel Pisa
+ *
+ * Initial development supported by Google GSoC 2013 from RTEMS project slot
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef NET_CAN_HOST_H
+#define NET_CAN_HOST_H
+
+#include "net/can_emu.h"
+
+#define TYPE_CAN_HOST "can-host"
+#define CAN_HOST_CLASS(klass) \
+ OBJECT_CLASS_CHECK(CanHostClass, (klass), TYPE_CAN_HOST)
+#define CAN_HOST_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(CanHostClass, (obj), TYPE_CAN_HOST)
+#define CAN_HOST(obj) \
+ OBJECT_CHECK(CanHostState, (obj), TYPE_CAN_HOST)
+
+typedef struct CanHostState {
+ ObjectClass oc;
+
+ CanBusState *bus;
+ CanBusClientState bus_client;
+} CanHostState;
+
+typedef struct CanHostClass {
+ ObjectClass oc;
+
+ void (*connect)(CanHostState *ch, Error **errp);
+ void (*disconnect)(CanHostState *ch);
+} CanHostClass;
+
+#endif
@@ -23,3 +23,5 @@ common-obj-$(CONFIG_POSIX) += tap.o $(tap-obj-y)
common-obj-$(CONFIG_WIN32) += tap-win32.o
vde.o-libs = $(VDE_LIBS)
+
+common-obj-$(CONFIG_CAN_BUS) += can/
new file mode 100644
@@ -0,0 +1 @@
+common-obj-y += can_core.o can_host.o
new file mode 100644
@@ -0,0 +1,138 @@
+/*
+ * CAN common CAN bus emulation support
+ *
+ * Copyright (c) 2013-2014 Jin Yang
+ * Copyright (c) 2014-2018 Pavel Pisa
+ *
+ * Initial development supported by Google GSoC 2013 from RTEMS project slot
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "qemu/osdep.h"
+#include "chardev/char.h"
+#include "qemu/sockets.h"
+#include "qapi/error.h"
+#include "net/can_emu.h"
+#include "qom/object_interfaces.h"
+
+struct CanBusState {
+ Object object;
+
+ QTAILQ_HEAD(, CanBusClientState) clients;
+};
+
+static void can_bus_instance_init(Object *object)
+{
+ CanBusState *bus = (CanBusState *)object;
+
+ QTAILQ_INIT(&bus->clients);
+}
+
+int can_bus_insert_client(CanBusState *bus, CanBusClientState *client)
+{
+ client->bus = bus;
+ QTAILQ_INSERT_TAIL(&bus->clients, client, next);
+ return 0;
+}
+
+int can_bus_remove_client(CanBusClientState *client)
+{
+ CanBusState *bus = client->bus;
+ if (bus == NULL) {
+ return 0;
+ }
+
+ QTAILQ_REMOVE(&bus->clients, client, next);
+ client->bus = NULL;
+ return 1;
+}
+
+ssize_t can_bus_client_send(CanBusClientState *client,
+ const struct qemu_can_frame *frames, size_t frames_cnt)
+{
+ int ret = 0;
+ CanBusState *bus = client->bus;
+ CanBusClientState *peer;
+ if (bus == NULL) {
+ return -1;
+ }
+
+ QTAILQ_FOREACH(peer, &bus->clients, next) {
+ if (peer->info->can_receive(peer)) {
+ if (peer == client) {
+ /* No loopback support for now */
+ continue;
+ }
+ if (peer->info->receive(peer, frames, frames_cnt) > 0) {
+ ret = 1;
+ }
+ }
+ }
+
+ return ret;
+}
+
+int can_bus_filter_match(struct qemu_can_filter *filter, qemu_canid_t can_id)
+{
+ int m;
+ if (((can_id | filter->can_mask) & QEMU_CAN_ERR_FLAG)) {
+ return (filter->can_mask & QEMU_CAN_ERR_FLAG) != 0;
+ }
+ m = (can_id & filter->can_mask) == (filter->can_id & filter->can_mask);
+ return filter->can_id & QEMU_CAN_INV_FILTER ? !m : m;
+}
+
+int can_bus_client_set_filters(CanBusClientState *client,
+ const struct qemu_can_filter *filters, size_t filters_cnt)
+{
+ return 0;
+}
+
+
+static bool can_bus_can_be_deleted(UserCreatable *uc)
+{
+ return false;
+}
+
+static void can_bus_class_init(ObjectClass *klass,
+ void *class_data G_GNUC_UNUSED)
+{
+ UserCreatableClass *uc_klass = USER_CREATABLE_CLASS(klass);
+
+ uc_klass->can_be_deleted = can_bus_can_be_deleted;
+}
+
+static const TypeInfo can_bus_info = {
+ .parent = TYPE_OBJECT,
+ .name = TYPE_CAN_BUS,
+ .instance_size = sizeof(CanBusState),
+ .instance_init = can_bus_instance_init,
+ .class_init = can_bus_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_USER_CREATABLE },
+ { }
+ }
+};
+
+static void can_bus_register_types(void)
+{
+ type_register_static(&can_bus_info);
+}
+
+type_init(can_bus_register_types);
new file mode 100644
@@ -0,0 +1,112 @@
+/*
+ * CAN generic CAN host connection support
+ *
+ * Copyright (c) 2013-2014 Jin Yang
+ * Copyright (c) 2014-2018 Pavel Pisa
+ *
+ * Initial development supported by Google GSoC 2013 from RTEMS project slot
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "qemu/osdep.h"
+#include "chardev/char.h"
+#include "qemu/sockets.h"
+#include "qapi/error.h"
+#include "qom/object_interfaces.h"
+#include "net/can_emu.h"
+#include "net/can_host.h"
+
+struct CanBusState {
+ Object object;
+
+ QTAILQ_HEAD(, CanBusClientState) clients;
+};
+
+static void can_host_disconnect(CanHostState *ch)
+{
+ CanHostClass *chc = CAN_HOST_GET_CLASS(ch);
+
+ can_bus_remove_client(&ch->bus_client);
+ chc->disconnect(ch);
+}
+
+static void can_host_connect(CanHostState *ch, Error **errp)
+{
+ CanHostClass *chc = CAN_HOST_GET_CLASS(ch);
+ Error *local_err = NULL;
+
+ chc->connect(ch, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ can_bus_insert_client(ch->bus, &ch->bus_client);
+}
+
+static void can_host_unparent(Object *obj)
+{
+ can_host_disconnect(CAN_HOST(obj));
+}
+
+static void can_host_complete(UserCreatable *uc, Error **errp)
+{
+ can_host_connect(CAN_HOST(uc), errp);
+}
+
+static void can_host_instance_init(Object *obj)
+{
+ CanHostState *ch = CAN_HOST(obj);
+
+ object_property_add_link(obj, "canbus", TYPE_CAN_BUS,
+ (Object **)&ch->bus,
+ object_property_allow_set_link,
+ OBJ_PROP_LINK_UNREF_ON_RELEASE,
+ &error_abort);
+}
+
+static void can_host_class_init(ObjectClass *klass,
+ void *class_data G_GNUC_UNUSED)
+{
+ UserCreatableClass *uc_klass = USER_CREATABLE_CLASS(klass);
+
+ klass->unparent = can_host_unparent;
+ uc_klass->complete = can_host_complete;
+}
+
+static const TypeInfo can_host_info = {
+ .parent = TYPE_OBJECT,
+ .name = TYPE_CAN_HOST,
+ .instance_size = sizeof(CanHostState),
+ .class_size = sizeof(CanHostClass),
+ .abstract = true,
+ .instance_init = can_host_instance_init,
+ .class_init = can_host_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_USER_CREATABLE },
+ { }
+ }
+};
+
+static void can_host_register_types(void)
+{
+ type_register_static(&can_host_info);
+}
+
+type_init(can_host_register_types);