diff --git a/hw/net/can/Makefile.objs b/hw/net/can/Makefile.objs index 97c4295943..9f0c4ee332 100644 --- a/hw/net/can/Makefile.objs +++ b/hw/net/can/Makefile.objs @@ -1,3 +1,4 @@ common-obj-$(CONFIG_CAN_SJA1000) += can_sja1000.o common-obj-$(CONFIG_CAN_PCI) += can_kvaser_pci.o common-obj-$(CONFIG_CAN_PCI) += can_pcm3680_pci.o +common-obj-$(CONFIG_CAN_PCI) += can_mioe3680_pci.o diff --git a/hw/net/can/can_mioe3680_pci.c b/hw/net/can/can_mioe3680_pci.c new file mode 100644 index 0000000000..fd20b88955 --- /dev/null +++ b/hw/net/can/can_mioe3680_pci.c @@ -0,0 +1,262 @@ +/* + * MIOe-3680 PCI CAN device (SJA1000 based) emulation + * + * Copyright (c) 2016 Deniz Eren (deniz.eren@icloud.com) + * + * Based on Kvaser PCI CAN device (SJA1000 based) emulation implemented by + * Jin Yang and Pavel Pisa + * + * 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 "qemu/event_notifier.h" +#include "qemu/thread.h" +#include "qemu/sockets.h" +#include "qapi/error.h" +#include "chardev/char.h" +#include "hw/hw.h" +#include "hw/pci/pci.h" +#include "net/can_emu.h" + +#include "can_sja1000.h" + +#define TYPE_CAN_PCI_DEV "mioe3680_pci" + +#define MIOe3680_PCI_DEV(obj) \ + OBJECT_CHECK(Mioe3680PCIState, (obj), TYPE_CAN_PCI_DEV) + +/* the PCI device and vendor IDs */ +#ifndef MIOe3680_PCI_VENDOR_ID1 +#define MIOe3680_PCI_VENDOR_ID1 0x13fe +#endif + +#ifndef MIOe3680_PCI_DEVICE_ID1 +#define MIOe3680_PCI_DEVICE_ID1 0xc302 +#endif + +#define MIOe3680_PCI_SJA_COUNT 2 +#define MIOe3680_PCI_SJA_RANGE 0x400 + +#define MIOe3680_PCI_BYTES_PER_SJA 0x80 + +typedef struct Mioe3680PCIState { + /*< private >*/ + PCIDevice dev; + /*< public >*/ + MemoryRegion sja_io[MIOe3680_PCI_SJA_COUNT]; + + CanSJA1000State sja_state[MIOe3680_PCI_SJA_COUNT]; + qemu_irq irq; + + char *model; /* The model that support, only SJA1000 now. */ + CanBusState *canbus[MIOe3680_PCI_SJA_COUNT]; +} Mioe3680PCIState; + +static void mioe3680_pci_reset(DeviceState *dev) +{ + Mioe3680PCIState *d = MIOe3680_PCI_DEV(dev); + int i; + + for (i = 0 ; i < MIOe3680_PCI_SJA_COUNT; i++) { + can_sja_hardware_reset(&d->sja_state[i]); + } +} + +static uint64_t mioe3680_pci_sja1_io_read(void *opaque, hwaddr addr, + unsigned size) +{ + Mioe3680PCIState *d = opaque; + CanSJA1000State *s = &d->sja_state[0]; + + if (addr >= MIOe3680_PCI_BYTES_PER_SJA) { + return 0; + } + + return can_sja_mem_read(s, addr >> 2, size); +} + +static void mioe3680_pci_sja1_io_write(void *opaque, hwaddr addr, uint64_t data, + unsigned size) +{ + Mioe3680PCIState *d = opaque; + CanSJA1000State *s = &d->sja_state[0]; + + if (addr >= MIOe3680_PCI_BYTES_PER_SJA) { + return; + } + + can_sja_mem_write(s, addr >> 2, data, size); +} + +static uint64_t mioe3680_pci_sja2_io_read(void *opaque, hwaddr addr, + unsigned size) +{ + Mioe3680PCIState *d = opaque; + CanSJA1000State *s = &d->sja_state[1]; + + if (addr >= MIOe3680_PCI_BYTES_PER_SJA) { + return 0; + } + + return can_sja_mem_read(s, addr >> 2, size); +} + +static void mioe3680_pci_sja2_io_write(void *opaque, hwaddr addr, uint64_t data, + unsigned size) +{ + Mioe3680PCIState *d = opaque; + CanSJA1000State *s = &d->sja_state[1]; + + if (addr >= MIOe3680_PCI_BYTES_PER_SJA) { + return; + } + + can_sja_mem_write(s, addr >> 2, data, size); +} + +static const MemoryRegionOps mioe3680_pci_sja1_io_ops = { + .read = mioe3680_pci_sja1_io_read, + .write = mioe3680_pci_sja1_io_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .impl = { + .max_access_size = 1, + }, +}; + +static const MemoryRegionOps mioe3680_pci_sja2_io_ops = { + .read = mioe3680_pci_sja2_io_read, + .write = mioe3680_pci_sja2_io_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .impl = { + .max_access_size = 1, + }, +}; + +static void mioe3680_pci_realize(PCIDevice *pci_dev, Error **errp) +{ + Mioe3680PCIState *d = MIOe3680_PCI_DEV(pci_dev); + uint8_t *pci_conf; + int i; + + pci_conf = pci_dev->config; + pci_conf[PCI_INTERRUPT_PIN] = 0x01; /* interrupt pin A */ + + d->irq = pci_allocate_irq(&d->dev); + + for (i = 0 ; i < MIOe3680_PCI_SJA_COUNT; i++) { + can_sja_init(&d->sja_state[i], d->irq); + } + + for (i = 0 ; i < MIOe3680_PCI_SJA_COUNT; i++) { + if (can_sja_connect_to_bus(&d->sja_state[i], d->canbus[i]) < 0) { + error_setg(errp, "can_sja_connect_to_bus failed"); + return; + } + } + + memory_region_init_io(&d->sja_io[0], OBJECT(d), &mioe3680_pci_sja1_io_ops, + d, "mioe3680_pci-sja1", MIOe3680_PCI_SJA_RANGE); + memory_region_init_io(&d->sja_io[1], OBJECT(d), &mioe3680_pci_sja2_io_ops, + d, "mioe3680_pci-sja2", MIOe3680_PCI_SJA_RANGE); + + for (i = 0 ; i < MIOe3680_PCI_SJA_COUNT; i++) { + pci_register_bar(&d->dev, /*BAR*/ i, PCI_BASE_ADDRESS_SPACE_IO, + &d->sja_io[i]); + } +} + +static void mioe3680_pci_exit(PCIDevice *pci_dev) +{ + Mioe3680PCIState *d = MIOe3680_PCI_DEV(pci_dev); + int i; + + for (i = 0 ; i < MIOe3680_PCI_SJA_COUNT; i++) { + can_sja_disconnect(&d->sja_state[i]); + } + + qemu_free_irq(d->irq); +} + +static const VMStateDescription vmstate_mioe3680_pci = { + .name = "mioe3680_pci", + .version_id = 1, + .minimum_version_id = 1, + .minimum_version_id_old = 1, + .fields = (VMStateField[]) { + VMSTATE_PCI_DEVICE(dev, Mioe3680PCIState), + VMSTATE_STRUCT(sja_state[0], Mioe3680PCIState, 0, vmstate_can_sja, + CanSJA1000State), + VMSTATE_STRUCT(sja_state[1], Mioe3680PCIState, 0, vmstate_can_sja, + CanSJA1000State), + VMSTATE_END_OF_LIST() + } +}; + +static void mioe3680_pci_instance_init(Object *obj) +{ + Mioe3680PCIState *d = MIOe3680_PCI_DEV(obj); + + object_property_add_link(obj, "canbus0", TYPE_CAN_BUS, + (Object **)&d->canbus[0], + qdev_prop_allow_set_link_before_realize, + 0, &error_abort); + object_property_add_link(obj, "canbus1", TYPE_CAN_BUS, + (Object **)&d->canbus[1], + qdev_prop_allow_set_link_before_realize, + 0, &error_abort); +} + +static void mioe3680_pci_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->realize = mioe3680_pci_realize; + k->exit = mioe3680_pci_exit; + k->vendor_id = MIOe3680_PCI_VENDOR_ID1; + k->device_id = MIOe3680_PCI_DEVICE_ID1; + k->revision = 0x00; + k->class_id = 0x000c09; + k->subsystem_vendor_id = MIOe3680_PCI_VENDOR_ID1; + k->subsystem_id = MIOe3680_PCI_DEVICE_ID1; + dc->desc = "Mioe3680 PCICANx"; + dc->vmsd = &vmstate_mioe3680_pci; + set_bit(DEVICE_CATEGORY_MISC, dc->categories); + dc->reset = mioe3680_pci_reset; +} + +static const TypeInfo mioe3680_pci_info = { + .name = TYPE_CAN_PCI_DEV, + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(Mioe3680PCIState), + .class_init = mioe3680_pci_class_init, + .instance_init = mioe3680_pci_instance_init, + .interfaces = (InterfaceInfo[]) { + { INTERFACE_CONVENTIONAL_PCI_DEVICE }, + { }, + }, +}; + +static void mioe3680_pci_register_types(void) +{ + type_register_static(&mioe3680_pci_info); +} + +type_init(mioe3680_pci_register_types)