@@ -3,3 +3,4 @@
common-obj-$(CONFIG_CAN_SJA1000) += can_core.o
common-obj-$(CONFIG_CAN_SJA1000) += can_sja1000.o
common-obj-$(CONFIG_CAN_PCI) += can_pci.o
+common-obj-$(CONFIG_CAN_PCI) += can_kvaser_pci.o
new file mode 100644
@@ -0,0 +1,376 @@
+/*
+ * Kvaser PCI CAN device (SJA1000 based) emulation
+ *
+ * Copyright (c) 2013-2014 Jin Yang
+ * Copyright (c) 2014 Pavel Pisa
+ *
+ * Partially based on educational PCIexpress APOHW hardware
+ * emulator used fro class A0B36APO at CTU FEE course by
+ * Rostislav Lisovy and 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 "qemu/event_notifier.h"
+#include "qemu/thread.h"
+#include "qemu/sockets.h"
+#include "qemu/error-report.h"
+#include "chardev/char.h"
+#include "hw/hw.h"
+#include "hw/pci/pci.h"
+#include "can/can_emu.h"
+
+#include "can_sja1000.h"
+
+#define TYPE_CAN_PCI_DEV "kvaser_pci"
+
+#define KVASER_PCI_DEV(obj) \
+ OBJECT_CHECK(KvaserPCIState, (obj), TYPE_CAN_PCI_DEV)
+
+#ifndef KVASER_PCI_VENDOR_ID1
+#define KVASER_PCI_VENDOR_ID1 0x10e8 /* the PCI device and vendor IDs */
+#endif
+
+#ifndef KVASER_PCI_DEVICE_ID1
+#define KVASER_PCI_DEVICE_ID1 0x8406
+#endif
+
+#define KVASER_PCI_S5920_RANGE 0x80
+#define KVASER_PCI_SJA_RANGE 0x80
+#define KVASER_PCI_XILINX_RANGE 0x8
+
+#define KVASER_PCI_BYTES_PER_SJA 0x20
+
+#define S5920_OMB 0x0C
+#define S5920_IMB 0x1C
+#define S5920_MBEF 0x34
+#define S5920_INTCSR 0x38
+#define S5920_RCR 0x3C
+#define S5920_PTCR 0x60
+
+#define S5920_INTCSR_ADDON_INTENABLE_M 0x2000
+#define S5920_INTCSR_INTERRUPT_ASSERTED_M 0x800000
+
+#define KVASER_PCI_XILINX_VERINT 7 /* Lower nibble simulate interrupts,
+ high nibble version number. */
+
+typedef struct KvaserPCIState {
+ /*< private >*/
+ PCIDevice dev;
+ /*< public >*/
+ MemoryRegion s5920_io;
+ MemoryRegion sja_io;
+ MemoryRegion xilinx_io;
+
+ CanSJA1000State sja_state;
+ qemu_irq irq;
+
+ uint32_t s5920_intcsr;
+ uint32_t s5920_irqstate;
+
+ char *model; /* The model that support, only SJA1000 now. */
+ char *canbus;
+ char *host;
+} KvaserPCIState;
+
+static void kvaser_pci_irq_raise(void *opaque)
+{
+ KvaserPCIState *d = (KvaserPCIState *)opaque;
+ d->s5920_irqstate = 1;
+
+ if (d->s5920_intcsr & S5920_INTCSR_ADDON_INTENABLE_M) {
+ qemu_irq_raise(d->irq);
+ }
+}
+
+static void kvaser_pci_irq_lower(void *opaque)
+{
+ KvaserPCIState *d = (KvaserPCIState *)opaque;
+ d->s5920_irqstate = 0;
+ qemu_irq_lower(d->irq);
+}
+
+static void
+kvaser_pci_reset(void *opaque)
+{
+ KvaserPCIState *d = (KvaserPCIState *)opaque;
+ CanSJA1000State *s = &d->sja_state;
+
+ can_sja_hardware_reset(s);
+}
+
+static uint64_t kvaser_pci_s5920_io_read(void *opaque, hwaddr addr,
+ unsigned size)
+{
+ KvaserPCIState *d = opaque;
+ uint64_t val;
+
+ switch (addr) {
+ case S5920_INTCSR:
+ val = d->s5920_intcsr;
+ val &= ~S5920_INTCSR_INTERRUPT_ASSERTED_M;
+ if (d->s5920_irqstate) {
+ val |= S5920_INTCSR_INTERRUPT_ASSERTED_M;
+ }
+ return val;
+ }
+ return 0;
+}
+
+static void kvaser_pci_s5920_io_write(void *opaque, hwaddr addr, uint64_t data,
+ unsigned size)
+{
+ KvaserPCIState *d = opaque;
+
+ switch (addr) {
+ case S5920_INTCSR:
+ if (~d->s5920_intcsr & data & S5920_INTCSR_ADDON_INTENABLE_M) {
+ if (d->s5920_irqstate) {
+ qemu_irq_raise(d->irq);
+ }
+ }
+ d->s5920_intcsr = data;
+ break;
+ }
+}
+
+static uint64_t kvaser_pci_sja_io_read(void *opaque, hwaddr addr, unsigned size)
+{
+ KvaserPCIState *d = opaque;
+ CanSJA1000State *s = &d->sja_state;
+
+ if (addr >= KVASER_PCI_BYTES_PER_SJA) {
+ return 0;
+ }
+
+ return can_sja_mem_read(s, addr, size);
+}
+
+static void kvaser_pci_sja_io_write(void *opaque, hwaddr addr, uint64_t data,
+ unsigned size)
+{
+ KvaserPCIState *d = opaque;
+ CanSJA1000State *s = &d->sja_state;
+
+ if (addr >= KVASER_PCI_BYTES_PER_SJA) {
+ return;
+ }
+
+ can_sja_mem_write(s, addr, data, size);
+}
+
+static uint64_t kvaser_pci_xilinx_io_read(void *opaque, hwaddr addr,
+ unsigned size)
+{
+ /*KvaserPCIState *d = opaque;*/
+
+ switch (addr) {
+ case KVASER_PCI_XILINX_VERINT:
+ return (13 << 4) | 0;
+ }
+
+ return 0;
+}
+
+static void kvaser_pci_xilinx_io_write(void *opaque, hwaddr addr, uint64_t data,
+ unsigned size)
+{
+ /*KvaserPCIState *d = opaque;*/
+}
+
+static const MemoryRegionOps kvaser_pci_s5920_io_ops = {
+ .read = kvaser_pci_s5920_io_read,
+ .write = kvaser_pci_s5920_io_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .impl = {
+ .min_access_size = 4,
+ .max_access_size = 4,
+ },
+};
+
+static const MemoryRegionOps kvaser_pci_sja_io_ops = {
+ .read = kvaser_pci_sja_io_read,
+ .write = kvaser_pci_sja_io_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .impl = {
+ .min_access_size = 1,
+ .max_access_size = 1,
+ },
+};
+
+static const MemoryRegionOps kvaser_pci_xilinx_io_ops = {
+ .read = kvaser_pci_xilinx_io_read,
+ .write = kvaser_pci_xilinx_io_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .impl = {
+ .min_access_size = 1,
+ .max_access_size = 1,
+ },
+};
+
+static int kvaser_pci_init(PCIDevice *pci_dev)
+{
+ KvaserPCIState *d = KVASER_PCI_DEV(pci_dev);
+ CanSJA1000State *s = &d->sja_state;
+ uint8_t *pci_conf;
+ CanBusState *can_bus;
+
+ if (d->model) {
+ if (strncmp(d->model, "pcican-s", 256)) { /* for security reason */
+ error_report("Can't create CAN device, "
+ "the model %s is not supported now.", d->model);
+ exit(1);
+ }
+ }
+
+ can_bus = can_bus_find_by_name(d->canbus, true);
+ if (can_bus == NULL) {
+ error_report("Cannot create can find/allocate CAN bus");
+ exit(1);
+
+ }
+
+ if (d->host != NULL) {
+ if (can_bus_connect_to_host_device(can_bus, d->host) < 0) {
+ error_report("Cannot connect CAN bus to host device \"%s\"",
+ d->host);
+ exit(1);
+ }
+ }
+
+ pci_conf = pci_dev->config;
+ pci_conf[PCI_INTERRUPT_PIN] = 0x01; /* interrupt pin A */
+
+ d->irq = pci_allocate_irq(&d->dev);
+
+ can_sja_init(s, kvaser_pci_irq_raise, kvaser_pci_irq_lower, d);
+
+ qemu_register_reset(kvaser_pci_reset, d);
+
+ if (can_sja_connect_to_bus(s, can_bus) < 0) {
+ error_report("can_sja_connect_to_bus failed");
+ exit(1);
+ }
+
+ memory_region_init_io(&d->s5920_io, OBJECT(d), &kvaser_pci_s5920_io_ops,
+ d, "kvaser_pci-s5920", KVASER_PCI_S5920_RANGE);
+ memory_region_init_io(&d->sja_io, OBJECT(d), &kvaser_pci_sja_io_ops,
+ d, "kvaser_pci-sja", KVASER_PCI_SJA_RANGE);
+ memory_region_init_io(&d->xilinx_io, OBJECT(d), &kvaser_pci_xilinx_io_ops,
+ d, "kvaser_pci-xilinx", KVASER_PCI_XILINX_RANGE);
+
+ pci_register_bar(&d->dev, /*BAR*/ 0, PCI_BASE_ADDRESS_SPACE_IO,
+ &d->s5920_io);
+ pci_register_bar(&d->dev, /*BAR*/ 1, PCI_BASE_ADDRESS_SPACE_IO,
+ &d->sja_io);
+ pci_register_bar(&d->dev, /*BAR*/ 2, PCI_BASE_ADDRESS_SPACE_IO,
+ &d->xilinx_io);
+
+ return 0;
+}
+
+static void kvaser_pci_exit(PCIDevice *pci_dev)
+{
+ KvaserPCIState *d = KVASER_PCI_DEV(pci_dev);
+ CanSJA1000State *s = &d->sja_state;
+
+ can_sja_disconnect(s);
+
+ qemu_unregister_reset(kvaser_pci_reset, d);
+
+ /*
+ * regions d->s5920_io, d->sja_io and d->xilinx_io
+ * are destroyed by QOM now
+ */
+ /* memory_region_destroy(&d->s5920_io); */
+ /* memory_region_destroy(&d->sja_io); */
+ /* memory_region_destroy(&d->xilinx_io); */
+
+ can_sja_exit(s);
+
+ qemu_free_irq(d->irq);
+}
+
+static const VMStateDescription vmstate_kvaser_pci = {
+ .name = "kvaser_pci",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_PCI_DEVICE(dev, KvaserPCIState),
+ VMSTATE_STRUCT(sja_state, KvaserPCIState, 0, vmstate_can_sja,
+ CanSJA1000State),
+ /*char *model,*/
+ VMSTATE_UINT32(s5920_intcsr, KvaserPCIState),
+ VMSTATE_UINT32(s5920_irqstate, KvaserPCIState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void qdev_kvaser_pci_reset(DeviceState *dev)
+{
+ KvaserPCIState *d = KVASER_PCI_DEV(dev);
+ kvaser_pci_reset(d);
+}
+
+static Property kvaser_pci_properties[] = {
+ DEFINE_PROP_STRING("canbus", KvaserPCIState, canbus),
+ DEFINE_PROP_STRING("host", KvaserPCIState, host),
+ DEFINE_PROP_STRING("model", KvaserPCIState, model),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void kvaser_pci_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+
+ k->init = kvaser_pci_init;
+ k->exit = kvaser_pci_exit;
+ k->vendor_id = KVASER_PCI_VENDOR_ID1;
+ k->device_id = KVASER_PCI_DEVICE_ID1;
+ k->revision = 0x00;
+ k->class_id = 0x00ff00;
+ dc->desc = "Kvaser PCICANx";
+ dc->props = kvaser_pci_properties;
+ dc->vmsd = &vmstate_kvaser_pci;
+ set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+ dc->reset = qdev_kvaser_pci_reset;
+}
+
+static const TypeInfo kvaser_pci_info = {
+ .name = TYPE_CAN_PCI_DEV,
+ .parent = TYPE_PCI_DEVICE,
+ .instance_size = sizeof(KvaserPCIState),
+ .class_init = kvaser_pci_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { INTERFACE_CONVENTIONAL_PCI_DEVICE },
+ { },
+ },
+};
+
+static void kvaser_pci_register_types(void)
+{
+ type_register_static(&kvaser_pci_info);
+}
+
+type_init(kvaser_pci_register_types)