diff options
Diffstat (limited to 'hw/net/can/can_pcm3680_pci.c')
-rw-r--r-- | hw/net/can/can_pcm3680_pci.c | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/hw/net/can/can_pcm3680_pci.c b/hw/net/can/can_pcm3680_pci.c new file mode 100644 index 0000000..23f7ff4 --- /dev/null +++ b/hw/net/can/can_pcm3680_pci.c @@ -0,0 +1,263 @@ +/* + * PCM-3680i 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 "pcm3680_pci" + +#define PCM3680i_PCI_DEV(obj) \ + OBJECT_CHECK(Pcm3680iPCIState, (obj), TYPE_CAN_PCI_DEV) + +/* the PCI device and vendor IDs */ +#ifndef PCM3680i_PCI_VENDOR_ID1 +#define PCM3680i_PCI_VENDOR_ID1 0x13fe +#endif + +#ifndef PCM3680i_PCI_DEVICE_ID1 +#define PCM3680i_PCI_DEVICE_ID1 0xc002 +#endif + +#define PCM3680i_PCI_SJA_COUNT 2 +#define PCM3680i_PCI_SJA_RANGE 0x100 + +#define PCM3680i_PCI_BYTES_PER_SJA 0x20 + +typedef struct Pcm3680iPCIState { + /*< private >*/ + PCIDevice dev; + /*< public >*/ + MemoryRegion sja_io[PCM3680i_PCI_SJA_COUNT]; + + CanSJA1000State sja_state[PCM3680i_PCI_SJA_COUNT]; + qemu_irq irq; + + char *model; /* The model that support, only SJA1000 now. */ + CanBusState *canbus[PCM3680i_PCI_SJA_COUNT]; +} Pcm3680iPCIState; + +static void pcm3680i_pci_reset(DeviceState *dev) +{ + Pcm3680iPCIState *d = PCM3680i_PCI_DEV(dev); + int i; + + for (i = 0; i < PCM3680i_PCI_SJA_COUNT; i++) { + can_sja_hardware_reset(&d->sja_state[i]); + } +} + +static uint64_t pcm3680i_pci_sja1_io_read(void *opaque, hwaddr addr, + unsigned size) +{ + Pcm3680iPCIState *d = opaque; + CanSJA1000State *s = &d->sja_state[0]; + + if (addr >= PCM3680i_PCI_BYTES_PER_SJA) { + return 0; + } + + return can_sja_mem_read(s, addr, size); +} + +static void pcm3680i_pci_sja1_io_write(void *opaque, hwaddr addr, + uint64_t data, unsigned size) +{ + Pcm3680iPCIState *d = opaque; + CanSJA1000State *s = &d->sja_state[0]; + + if (addr >= PCM3680i_PCI_BYTES_PER_SJA) { + return; + } + + can_sja_mem_write(s, addr, data, size); +} + +static uint64_t pcm3680i_pci_sja2_io_read(void *opaque, hwaddr addr, + unsigned size) +{ + Pcm3680iPCIState *d = opaque; + CanSJA1000State *s = &d->sja_state[1]; + + if (addr >= PCM3680i_PCI_BYTES_PER_SJA) { + return 0; + } + + return can_sja_mem_read(s, addr, size); +} + +static void pcm3680i_pci_sja2_io_write(void *opaque, hwaddr addr, uint64_t data, + unsigned size) +{ + Pcm3680iPCIState *d = opaque; + CanSJA1000State *s = &d->sja_state[1]; + + if (addr >= PCM3680i_PCI_BYTES_PER_SJA) { + return; + } + + can_sja_mem_write(s, addr, data, size); +} + +static const MemoryRegionOps pcm3680i_pci_sja1_io_ops = { + .read = pcm3680i_pci_sja1_io_read, + .write = pcm3680i_pci_sja1_io_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .impl = { + .max_access_size = 1, + }, +}; + +static const MemoryRegionOps pcm3680i_pci_sja2_io_ops = { + .read = pcm3680i_pci_sja2_io_read, + .write = pcm3680i_pci_sja2_io_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .impl = { + .max_access_size = 1, + }, +}; + +static void pcm3680i_pci_realize(PCIDevice *pci_dev, Error **errp) +{ + Pcm3680iPCIState *d = PCM3680i_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 < PCM3680i_PCI_SJA_COUNT; i++) { + can_sja_init(&d->sja_state[i], d->irq); + } + + for (i = 0; i < PCM3680i_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), &pcm3680i_pci_sja1_io_ops, + d, "pcm3680i_pci-sja1", PCM3680i_PCI_SJA_RANGE); + + memory_region_init_io(&d->sja_io[1], OBJECT(d), &pcm3680i_pci_sja2_io_ops, + d, "pcm3680i_pci-sja2", PCM3680i_PCI_SJA_RANGE); + + for (i = 0; i < PCM3680i_PCI_SJA_COUNT; i++) { + pci_register_bar(&d->dev, /*BAR*/ i, PCI_BASE_ADDRESS_SPACE_IO, + &d->sja_io[i]); + } +} + +static void pcm3680i_pci_exit(PCIDevice *pci_dev) +{ + Pcm3680iPCIState *d = PCM3680i_PCI_DEV(pci_dev); + int i; + + for (i = 0; i < PCM3680i_PCI_SJA_COUNT; i++) { + can_sja_disconnect(&d->sja_state[i]); + } + + qemu_free_irq(d->irq); +} + +static const VMStateDescription vmstate_pcm3680i_pci = { + .name = "pcm3680i_pci", + .version_id = 1, + .minimum_version_id = 1, + .minimum_version_id_old = 1, + .fields = (VMStateField[]) { + VMSTATE_PCI_DEVICE(dev, Pcm3680iPCIState), + VMSTATE_STRUCT(sja_state[0], Pcm3680iPCIState, 0, + vmstate_can_sja, CanSJA1000State), + VMSTATE_STRUCT(sja_state[1], Pcm3680iPCIState, 0, + vmstate_can_sja, CanSJA1000State), + VMSTATE_END_OF_LIST() + } +}; + +static void pcm3680i_pci_instance_init(Object *obj) +{ + Pcm3680iPCIState *d = PCM3680i_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 pcm3680i_pci_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->realize = pcm3680i_pci_realize; + k->exit = pcm3680i_pci_exit; + k->vendor_id = PCM3680i_PCI_VENDOR_ID1; + k->device_id = PCM3680i_PCI_DEVICE_ID1; + k->revision = 0x00; + k->class_id = 0x000c09; + k->subsystem_vendor_id = PCM3680i_PCI_VENDOR_ID1; + k->subsystem_id = PCM3680i_PCI_DEVICE_ID1; + dc->desc = "Pcm3680i PCICANx"; + dc->vmsd = &vmstate_pcm3680i_pci; + set_bit(DEVICE_CATEGORY_MISC, dc->categories); + dc->reset = pcm3680i_pci_reset; +} + +static const TypeInfo pcm3680i_pci_info = { + .name = TYPE_CAN_PCI_DEV, + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(Pcm3680iPCIState), + .class_init = pcm3680i_pci_class_init, + .instance_init = pcm3680i_pci_instance_init, + .interfaces = (InterfaceInfo[]) { + { INTERFACE_CONVENTIONAL_PCI_DEVICE }, + { }, + }, +}; + +static void pcm3680i_pci_register_types(void) +{ + type_register_static(&pcm3680i_pci_info); +} + +type_init(pcm3680i_pci_register_types) |