[qemu.git] / hw / s390-virtio-bus.c

/*
 * QEMU S390 virtio target
 *
 * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */

#include "hw.h"
#include "block.h"
#include "sysemu.h"
#include "net.h"
#include "boards.h"
#include "monitor.h"
#include "loader.h"
#include "elf.h"
#include "hw/virtio.h"
#include "hw/virtio-serial.h"
#include "hw/virtio-net.h"
#include "hw/sysbus.h"
#include "kvm.h"

#include "hw/s390-virtio-bus.h"

/* #define DEBUG_S390 */

#ifdef DEBUG_S390
#define dprintf(fmt, ...) \
    do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
#else
#define dprintf(fmt, ...) \
    do { } while (0)
#endif

#define VIRTIO_EXT_CODE   0x2603

static const TypeInfo s390_virtio_bus_info = {
    .name = TYPE_S390_VIRTIO_BUS,
    .parent = TYPE_BUS,
    .instance_size = sizeof(VirtIOS390Bus),
};

static const VirtIOBindings virtio_s390_bindings;

static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev);

/* length of VirtIO device pages */
const target_phys_addr_t virtio_size = S390_DEVICE_PAGES * TARGET_PAGE_SIZE;

static void s390_virtio_bus_reset(void *opaque)
{
    VirtIOS390Bus *bus = opaque;
    bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
}

void s390_virtio_reset_idx(VirtIOS390Device *dev)
{
    int i;
    target_phys_addr_t idx_addr;
    uint8_t num_vq;

    num_vq = s390_virtio_device_num_vq(dev);
    for (i = 0; i < num_vq; i++) {
        idx_addr = virtio_queue_get_avail_addr(dev->vdev, i) +
            VIRTIO_VRING_AVAIL_IDX_OFFS;
        stw_phys(idx_addr, 0);
        idx_addr = virtio_queue_get_used_addr(dev->vdev, i) +
            VIRTIO_VRING_USED_IDX_OFFS;
        stw_phys(idx_addr, 0);
    }
}

VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size)
{
    VirtIOS390Bus *bus;
    BusState *_bus;
    DeviceState *dev;

    /* Create bridge device */
    dev = qdev_create(NULL, "s390-virtio-bridge");
    qdev_init_nofail(dev);

    /* Create bus on bridge device */

    _bus = qbus_create(TYPE_S390_VIRTIO_BUS, dev, "s390-virtio");
    bus = DO_UPCAST(VirtIOS390Bus, bus, _bus);

    bus->dev_page = *ram_size;
    bus->dev_offs = bus->dev_page;
    bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;

    /* Enable hotplugging */
    _bus->allow_hotplug = 1;

    /* Allocate RAM for VirtIO device pages (descriptors, queues, rings) */
    *ram_size += S390_DEVICE_PAGES * TARGET_PAGE_SIZE;

    qemu_register_reset(s390_virtio_bus_reset, bus);
    return bus;
}

static void s390_virtio_irq(CPUS390XState *env, int config_change, uint64_t token)
{
    if (kvm_enabled()) {
        kvm_s390_virtio_irq(env, config_change, token);
    } else {
        cpu_inject_ext(env, VIRTIO_EXT_CODE, config_change, token);
    }
}

static int s390_virtio_device_init(VirtIOS390Device *dev, VirtIODevice *vdev)
{
    VirtIOS390Bus *bus;
    int dev_len;

    bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
    dev->vdev = vdev;
    dev->dev_offs = bus->dev_offs;
    dev->feat_len = sizeof(uint32_t); /* always keep 32 bits features */

    dev_len = VIRTIO_DEV_OFFS_CONFIG;
    dev_len += s390_virtio_device_num_vq(dev) * VIRTIO_VQCONFIG_LEN;
    dev_len += dev->feat_len * 2;
    dev_len += vdev->config_len;

    bus->dev_offs += dev_len;

    virtio_bind_device(vdev, &virtio_s390_bindings, dev);
    dev->host_features = vdev->get_features(vdev, dev->host_features);
    s390_virtio_device_sync(dev);
    s390_virtio_reset_idx(dev);
    if (dev->qdev.hotplugged) {
        S390CPU *cpu = s390_cpu_addr2state(0);
        CPUS390XState *env = &cpu->env;
        s390_virtio_irq(env, VIRTIO_PARAM_DEV_ADD, dev->dev_offs);
    }

    return 0;
}

static int s390_virtio_net_init(VirtIOS390Device *dev)
{
    VirtIODevice *vdev;

    vdev = virtio_net_init((DeviceState *)dev, &dev->nic, &dev->net);
    if (!vdev) {
        return -1;
    }

    return s390_virtio_device_init(dev, vdev);
}

static int s390_virtio_blk_init(VirtIOS390Device *dev)
{
    VirtIODevice *vdev;

    vdev = virtio_blk_init((DeviceState *)dev, &dev->blk);
    if (!vdev) {
        return -1;
    }

    return s390_virtio_device_init(dev, vdev);
}

static int s390_virtio_serial_init(VirtIOS390Device *dev)
{
    VirtIOS390Bus *bus;
    VirtIODevice *vdev;
    int r;

    bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);

    vdev = virtio_serial_init((DeviceState *)dev, &dev->serial);
    if (!vdev) {
        return -1;
    }

    r = s390_virtio_device_init(dev, vdev);
    if (!r) {
        bus->console = dev;
    }

    return r;
}

static int s390_virtio_scsi_init(VirtIOS390Device *dev)
{
    VirtIODevice *vdev;

    vdev = virtio_scsi_init((DeviceState *)dev, &dev->scsi);
    if (!vdev) {
        return -1;
    }

    return s390_virtio_device_init(dev, vdev);
}

static uint64_t s390_virtio_device_vq_token(VirtIOS390Device *dev, int vq)
{
    ram_addr_t token_off;

    token_off = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
                (vq * VIRTIO_VQCONFIG_LEN) +
                VIRTIO_VQCONFIG_OFFS_TOKEN;

    return ldq_be_phys(token_off);
}

static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev)
{
    VirtIODevice *vdev = dev->vdev;
    int num_vq;

    for (num_vq = 0; num_vq < VIRTIO_PCI_QUEUE_MAX; num_vq++) {
        if (!virtio_queue_get_num(vdev, num_vq)) {
            break;
        }
    }

    return num_vq;
}

static ram_addr_t s390_virtio_next_ring(VirtIOS390Bus *bus)
{
    ram_addr_t r = bus->next_ring;

    bus->next_ring += VIRTIO_RING_LEN;
    return r;
}

void s390_virtio_device_sync(VirtIOS390Device *dev)
{
    VirtIOS390Bus *bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
    ram_addr_t cur_offs;
    uint8_t num_vq;
    int i;

    virtio_reset(dev->vdev);

    /* Sync dev space */
    stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_TYPE, dev->vdev->device_id);

    stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, s390_virtio_device_num_vq(dev));
    stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_FEATURE_LEN, dev->feat_len);

    stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG_LEN, dev->vdev->config_len);

    num_vq = s390_virtio_device_num_vq(dev);
    stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, num_vq);

    /* Sync virtqueues */
    for (i = 0; i < num_vq; i++) {
        ram_addr_t vq = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
                        (i * VIRTIO_VQCONFIG_LEN);
        ram_addr_t vring;

        vring = s390_virtio_next_ring(bus);
        virtio_queue_set_addr(dev->vdev, i, vring);
        virtio_queue_set_vector(dev->vdev, i, i);
        stq_be_phys(vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring);
        stw_be_phys(vq + VIRTIO_VQCONFIG_OFFS_NUM, virtio_queue_get_num(dev->vdev, i));
    }

    cur_offs = dev->dev_offs;
    cur_offs += VIRTIO_DEV_OFFS_CONFIG;
    cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;

    /* Sync feature bitmap */
    stl_le_phys(cur_offs, dev->host_features);

    dev->feat_offs = cur_offs + dev->feat_len;
    cur_offs += dev->feat_len * 2;

    /* Sync config space */
    if (dev->vdev->get_config) {
        dev->vdev->get_config(dev->vdev, dev->vdev->config);
    }

    cpu_physical_memory_write(cur_offs,
                              dev->vdev->config, dev->vdev->config_len);
    cur_offs += dev->vdev->config_len;
}

void s390_virtio_device_update_status(VirtIOS390Device *dev)
{
    VirtIODevice *vdev = dev->vdev;
    uint32_t features;

    virtio_set_status(vdev, ldub_phys(dev->dev_offs + VIRTIO_DEV_OFFS_STATUS));

    /* Update guest supported feature bitmap */

    features = bswap32(ldl_be_phys(dev->feat_offs));
    virtio_set_features(vdev, features);
}

VirtIOS390Device *s390_virtio_bus_console(VirtIOS390Bus *bus)
{
    return bus->console;
}

/* Find a device by vring address */
VirtIOS390Device *s390_virtio_bus_find_vring(VirtIOS390Bus *bus,
                                             ram_addr_t mem,
                                             int *vq_num)
{
    VirtIOS390Device *_dev;
    DeviceState *dev;
    int i;

    QTAILQ_FOREACH(dev, &bus->bus.children, sibling) {
        _dev = (VirtIOS390Device *)dev;
        for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
            if (!virtio_queue_get_addr(_dev->vdev, i))
                break;
            if (virtio_queue_get_addr(_dev->vdev, i) == mem) {
                if (vq_num) {
                    *vq_num = i;
                }
                return _dev;
            }
        }
    }

    return NULL;
}

/* Find a device by device descriptor location */
VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem)
{
    VirtIOS390Device *_dev;
    DeviceState *dev;

    QTAILQ_FOREACH(dev, &bus->bus.children, sibling) {
        _dev = (VirtIOS390Device *)dev;
        if (_dev->dev_offs == mem) {
            return _dev;
        }
    }

    return NULL;
}

static void virtio_s390_notify(void *opaque, uint16_t vector)
{
    VirtIOS390Device *dev = (VirtIOS390Device*)opaque;
    uint64_t token = s390_virtio_device_vq_token(dev, vector);
    S390CPU *cpu = s390_cpu_addr2state(0);
    CPUS390XState *env = &cpu->env;

    s390_virtio_irq(env, 0, token);
}

static unsigned virtio_s390_get_features(void *opaque)
{
    VirtIOS390Device *dev = (VirtIOS390Device*)opaque;
    return dev->host_features;
}

/**************** S390 Virtio Bus Device Descriptions *******************/

static const VirtIOBindings virtio_s390_bindings = {
    .notify = virtio_s390_notify,
    .get_features = virtio_s390_get_features,
};

static Property s390_virtio_net_properties[] = {
    DEFINE_NIC_PROPERTIES(VirtIOS390Device, nic),
    DEFINE_PROP_UINT32("x-txtimer", VirtIOS390Device,
                       net.txtimer, TX_TIMER_INTERVAL),
    DEFINE_PROP_INT32("x-txburst", VirtIOS390Device,
                      net.txburst, TX_BURST),
    DEFINE_PROP_STRING("tx", VirtIOS390Device, net.tx),
    DEFINE_PROP_END_OF_LIST(),
};

static void s390_virtio_net_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);
    VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);

    k->init = s390_virtio_net_init;
    dc->props = s390_virtio_net_properties;
}

static TypeInfo s390_virtio_net = {
    .name          = "virtio-net-s390",
    .parent        = TYPE_VIRTIO_S390_DEVICE,
    .instance_size = sizeof(VirtIOS390Device),
    .class_init    = s390_virtio_net_class_init,
};

static Property s390_virtio_blk_properties[] = {
    DEFINE_BLOCK_PROPERTIES(VirtIOS390Device, blk.conf),
    DEFINE_PROP_STRING("serial", VirtIOS390Device, blk.serial),
#ifdef __linux__
    DEFINE_PROP_BIT("scsi", VirtIOS390Device, blk.scsi, 0, true),
#endif
    DEFINE_PROP_END_OF_LIST(),
};

static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);
    VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);

    k->init = s390_virtio_blk_init;
    dc->props = s390_virtio_blk_properties;
}

static TypeInfo s390_virtio_blk = {
    .name          = "virtio-blk-s390",
    .parent        = TYPE_VIRTIO_S390_DEVICE,
    .instance_size = sizeof(VirtIOS390Device),
    .class_init    = s390_virtio_blk_class_init,
};

static Property s390_virtio_serial_properties[] = {
    DEFINE_PROP_UINT32("max_ports", VirtIOS390Device,
                       serial.max_virtserial_ports, 31),
    DEFINE_PROP_END_OF_LIST(),
};

static void s390_virtio_serial_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);
    VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);

    k->init = s390_virtio_serial_init;
    dc->props = s390_virtio_serial_properties;
}

static TypeInfo s390_virtio_serial = {
    .name          = "virtio-serial-s390",
    .parent        = TYPE_VIRTIO_S390_DEVICE,
    .instance_size = sizeof(VirtIOS390Device),
    .class_init    = s390_virtio_serial_class_init,
};

static int s390_virtio_busdev_init(DeviceState *dev)
{
    VirtIOS390Device *_dev = (VirtIOS390Device *)dev;
    VirtIOS390DeviceClass *_info = VIRTIO_S390_DEVICE_GET_CLASS(dev);

    return _info->init(_dev);
}

static void virtio_s390_device_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);

    dc->init = s390_virtio_busdev_init;
    dc->bus_type = TYPE_S390_VIRTIO_BUS;
    dc->unplug = qdev_simple_unplug_cb;
}

static TypeInfo virtio_s390_device_info = {
    .name = TYPE_VIRTIO_S390_DEVICE,
    .parent = TYPE_DEVICE,
    .instance_size = sizeof(VirtIOS390Device),
    .class_init = virtio_s390_device_class_init,
    .class_size = sizeof(VirtIOS390DeviceClass),
    .abstract = true,
};

static Property s390_virtio_scsi_properties[] = {
    DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOS390Device, host_features, scsi),
    DEFINE_PROP_END_OF_LIST(),
};

static void s390_virtio_scsi_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);
    VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);

    k->init = s390_virtio_scsi_init;
    dc->props = s390_virtio_scsi_properties;
}

static TypeInfo s390_virtio_scsi = {
    .name          = "virtio-scsi-s390",
    .parent        = TYPE_VIRTIO_S390_DEVICE,
    .instance_size = sizeof(VirtIOS390Device),
    .class_init    = s390_virtio_scsi_class_init,
};

/***************** S390 Virtio Bus Bridge Device *******************/
/* Only required to have the virtio bus as child in the system bus */

static int s390_virtio_bridge_init(SysBusDevice *dev)
{
    /* nothing */
    return 0;
}

static void s390_virtio_bridge_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);
    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);

    k->init = s390_virtio_bridge_init;
    dc->no_user = 1;
}

static TypeInfo s390_virtio_bridge_info = {
    .name          = "s390-virtio-bridge",
    .parent        = TYPE_SYS_BUS_DEVICE,
    .instance_size = sizeof(SysBusDevice),
    .class_init    = s390_virtio_bridge_class_init,
};

static void s390_virtio_register_types(void)
{
    type_register_static(&s390_virtio_bus_info);
    type_register_static(&virtio_s390_device_info);
    type_register_static(&s390_virtio_serial);
    type_register_static(&s390_virtio_blk);
    type_register_static(&s390_virtio_net);
    type_register_static(&s390_virtio_scsi);
    type_register_static(&s390_virtio_bridge_info);
}

type_init(s390_virtio_register_types)
Commit	Line	Data
f3304eea AG	1	/*
	2	* QEMU S390 virtio target
	3	*
	4	* Copyright (c) 2009 Alexander Graf <agraf@suse.de>
	5	*
	6	* This library is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU Lesser General Public
	8	* License as published by the Free Software Foundation; either
	9	* version 2 of the License, or (at your option) any later version.
	10	*
	11	* This library is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* Lesser General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU Lesser General Public
	17	* License along with this library; if not, see <http://www.gnu.org/licenses/>.
	18	*/
	19
	20	#include "hw.h"
	21	#include "block.h"
	22	#include "sysemu.h"
	23	#include "net.h"
	24	#include "boards.h"
	25	#include "monitor.h"
	26	#include "loader.h"
	27	#include "elf.h"
	28	#include "hw/virtio.h"
98b19252	29	#include "hw/virtio-serial.h"
f0c07c7c	30	#include "hw/virtio-net.h"
f3304eea AG	31	#include "hw/sysbus.h"
	32	#include "kvm.h"
	33
	34	#include "hw/s390-virtio-bus.h"
	35
	36	/* #define DEBUG_S390 */
	37
	38	#ifdef DEBUG_S390
	39	#define dprintf(fmt, ...) \
	40	do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
	41	#else
	42	#define dprintf(fmt, ...) \
	43	do { } while (0)
	44	#endif
	45
8103b4d1 AG	46	#define VIRTIO_EXT_CODE 0x2603
8103b4d1 AG	47
0d936928 AL	48	static const TypeInfo s390_virtio_bus_info = {
	49	.name = TYPE_S390_VIRTIO_BUS,
	50	.parent = TYPE_BUS,
	51	.instance_size = sizeof(VirtIOS390Bus),
f3304eea AG	52	};
f3304eea AG	53
f3304eea AG	54	static const VirtIOBindings virtio_s390_bindings;
	55
	56	static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev);
f3304eea	57
d1ff903c AG	58	/* length of VirtIO device pages */
	59	const target_phys_addr_t virtio_size = S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
	60
eb3caa44 JF	61	static void s390_virtio_bus_reset(void *opaque)
	62	{
	63	VirtIOS390Bus *bus = opaque;
	64	bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
	65	}
	66
4170aea1 JF	67	void s390_virtio_reset_idx(VirtIOS390Device *dev)
	68	{
	69	int i;
	70	target_phys_addr_t idx_addr;
	71	uint8_t num_vq;
	72
	73	num_vq = s390_virtio_device_num_vq(dev);
	74	for (i = 0; i < num_vq; i++) {
	75	idx_addr = virtio_queue_get_avail_addr(dev->vdev, i) +
	76	VIRTIO_VRING_AVAIL_IDX_OFFS;
	77	stw_phys(idx_addr, 0);
	78	idx_addr = virtio_queue_get_used_addr(dev->vdev, i) +
	79	VIRTIO_VRING_USED_IDX_OFFS;
	80	stw_phys(idx_addr, 0);
	81	}
	82	}
	83
f3304eea AG	84	VirtIOS390Bus s390_virtio_bus_init(ram_addr_t ram_size)
	85	{
	86	VirtIOS390Bus *bus;
	87	BusState *_bus;
	88	DeviceState *dev;
	89
	90	/* Create bridge device */
	91	dev = qdev_create(NULL, "s390-virtio-bridge");
	92	qdev_init_nofail(dev);
	93
	94	/* Create bus on bridge device */
	95
0d936928	96	_bus = qbus_create(TYPE_S390_VIRTIO_BUS, dev, "s390-virtio");
f3304eea AG	97	bus = DO_UPCAST(VirtIOS390Bus, bus, _bus);
	98
	99	bus->dev_page = *ram_size;
	100	bus->dev_offs = bus->dev_page;
	101	bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
	102
7fa41e53 AG	103	/* Enable hotplugging */
	104	_bus->allow_hotplug = 1;
	105
f3304eea AG	106	/* Allocate RAM for VirtIO device pages (descriptors, queues, rings) */
	107	ram_size += S390_DEVICE_PAGES TARGET_PAGE_SIZE;
	108
eb3caa44	109	qemu_register_reset(s390_virtio_bus_reset, bus);
f3304eea AG	110	return bus;
	111	}
	112
0e4213a7	113	static void s390_virtio_irq(CPUS390XState *env, int config_change, uint64_t token)
7fa41e53 AG	114	{
	115	if (kvm_enabled()) {
	116	kvm_s390_virtio_irq(env, config_change, token);
	117	} else {
	118	cpu_inject_ext(env, VIRTIO_EXT_CODE, config_change, token);
	119	}
	120	}
	121
f3304eea AG	122	static int s390_virtio_device_init(VirtIOS390Device dev, VirtIODevice vdev)
	123	{
	124	VirtIOS390Bus *bus;
	125	int dev_len;
	126
	127	bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
	128	dev->vdev = vdev;
	129	dev->dev_offs = bus->dev_offs;
	130	dev->feat_len = sizeof(uint32_t); /* always keep 32 bits features */
	131
	132	dev_len = VIRTIO_DEV_OFFS_CONFIG;
	133	dev_len += s390_virtio_device_num_vq(dev) * VIRTIO_VQCONFIG_LEN;
	134	dev_len += dev->feat_len * 2;
	135	dev_len += vdev->config_len;
	136
	137	bus->dev_offs += dev_len;
	138
	139	virtio_bind_device(vdev, &virtio_s390_bindings, dev);
8172539d	140	dev->host_features = vdev->get_features(vdev, dev->host_features);
f3304eea	141	s390_virtio_device_sync(dev);
4170aea1	142	s390_virtio_reset_idx(dev);
7fa41e53	143	if (dev->qdev.hotplugged) {
45fa769b AF	144	S390CPU *cpu = s390_cpu_addr2state(0);
45fa769b AF	145	CPUS390XState *env = &cpu->env;
7fa41e53 AG	146	s390_virtio_irq(env, VIRTIO_PARAM_DEV_ADD, dev->dev_offs);
	147	}
	148
f3304eea AG	149	return 0;
	150	}
	151
	152	static int s390_virtio_net_init(VirtIOS390Device *dev)
	153	{
	154	VirtIODevice *vdev;
	155
f0c07c7c	156	vdev = virtio_net_init((DeviceState *)dev, &dev->nic, &dev->net);
f3304eea AG	157	if (!vdev) {
	158	return -1;
	159	}
	160
	161	return s390_virtio_device_init(dev, vdev);
	162	}
	163
	164	static int s390_virtio_blk_init(VirtIOS390Device *dev)
	165	{
	166	VirtIODevice *vdev;
	167
12c5674b	168	vdev = virtio_blk_init((DeviceState *)dev, &dev->blk);
f3304eea AG	169	if (!vdev) {
	170	return -1;
	171	}
	172
	173	return s390_virtio_device_init(dev, vdev);
	174	}
	175
98b19252	176	static int s390_virtio_serial_init(VirtIOS390Device *dev)
f3304eea AG	177	{
	178	VirtIOS390Bus *bus;
	179	VirtIODevice *vdev;
	180	int r;
	181
	182	bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
	183
6be9b414	184	vdev = virtio_serial_init((DeviceState *)dev, &dev->serial);
f3304eea AG	185	if (!vdev) {
	186	return -1;
	187	}
	188
	189	r = s390_virtio_device_init(dev, vdev);
	190	if (!r) {
	191	bus->console = dev;
	192	}
	193
	194	return r;
	195	}
	196
973abc7f SH	197	static int s390_virtio_scsi_init(VirtIOS390Device *dev)
	198	{
	199	VirtIODevice *vdev;
	200
	201	vdev = virtio_scsi_init((DeviceState *)dev, &dev->scsi);
	202	if (!vdev) {
	203	return -1;
	204	}
	205
	206	return s390_virtio_device_init(dev, vdev);
	207	}
	208
f3304eea AG	209	static uint64_t s390_virtio_device_vq_token(VirtIOS390Device *dev, int vq)
	210	{
	211	ram_addr_t token_off;
	212
	213	token_off = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
	214	(vq * VIRTIO_VQCONFIG_LEN) +
	215	VIRTIO_VQCONFIG_OFFS_TOKEN;
	216
04bc74ed	217	return ldq_be_phys(token_off);
f3304eea AG	218	}
	219
	220	static ram_addr_t s390_virtio_device_num_vq(VirtIOS390Device *dev)
	221	{
	222	VirtIODevice *vdev = dev->vdev;
	223	int num_vq;
	224
	225	for (num_vq = 0; num_vq < VIRTIO_PCI_QUEUE_MAX; num_vq++) {
	226	if (!virtio_queue_get_num(vdev, num_vq)) {
	227	break;
	228	}
	229	}
	230
	231	return num_vq;
	232	}
	233
	234	static ram_addr_t s390_virtio_next_ring(VirtIOS390Bus *bus)
	235	{
	236	ram_addr_t r = bus->next_ring;
	237
	238	bus->next_ring += VIRTIO_RING_LEN;
	239	return r;
	240	}
	241
baf0b55a	242	void s390_virtio_device_sync(VirtIOS390Device *dev)
f3304eea AG	243	{
	244	VirtIOS390Bus *bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
	245	ram_addr_t cur_offs;
	246	uint8_t num_vq;
	247	int i;
	248
	249	virtio_reset(dev->vdev);
	250
	251	/* Sync dev space */
	252	stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_TYPE, dev->vdev->device_id);
	253
	254	stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, s390_virtio_device_num_vq(dev));
	255	stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_FEATURE_LEN, dev->feat_len);
	256
	257	stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG_LEN, dev->vdev->config_len);
	258
	259	num_vq = s390_virtio_device_num_vq(dev);
	260	stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_NUM_VQ, num_vq);
	261
	262	/* Sync virtqueues */
	263	for (i = 0; i < num_vq; i++) {
	264	ram_addr_t vq = (dev->dev_offs + VIRTIO_DEV_OFFS_CONFIG) +
	265	(i * VIRTIO_VQCONFIG_LEN);
	266	ram_addr_t vring;
	267
	268	vring = s390_virtio_next_ring(bus);
	269	virtio_queue_set_addr(dev->vdev, i, vring);
	270	virtio_queue_set_vector(dev->vdev, i, i);
04bc74ed AG	271	stq_be_phys(vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring);
04bc74ed AG	272	stw_be_phys(vq + VIRTIO_VQCONFIG_OFFS_NUM, virtio_queue_get_num(dev->vdev, i));
f3304eea AG	273	}
	274
	275	cur_offs = dev->dev_offs;
	276	cur_offs += VIRTIO_DEV_OFFS_CONFIG;
	277	cur_offs += num_vq * VIRTIO_VQCONFIG_LEN;
	278
	279	/* Sync feature bitmap */
04bc74ed	280	stl_le_phys(cur_offs, dev->host_features);
f3304eea AG	281
	282	dev->feat_offs = cur_offs + dev->feat_len;
	283	cur_offs += dev->feat_len * 2;
	284
	285	/* Sync config space */
	286	if (dev->vdev->get_config) {
	287	dev->vdev->get_config(dev->vdev, dev->vdev->config);
	288	}
	289
54f7b4a3 SW	290	cpu_physical_memory_write(cur_offs,
54f7b4a3 SW	291	dev->vdev->config, dev->vdev->config_len);
f3304eea AG	292	cur_offs += dev->vdev->config_len;
	293	}
	294
	295	void s390_virtio_device_update_status(VirtIOS390Device *dev)
	296	{
	297	VirtIODevice *vdev = dev->vdev;
	298	uint32_t features;
	299
3e607cb5	300	virtio_set_status(vdev, ldub_phys(dev->dev_offs + VIRTIO_DEV_OFFS_STATUS));
f3304eea AG	301
	302	/* Update guest supported feature bitmap */
	303
04bc74ed	304	features = bswap32(ldl_be_phys(dev->feat_offs));
ad0c9332	305	virtio_set_features(vdev, features);
f3304eea AG	306	}
	307
	308	VirtIOS390Device s390_virtio_bus_console(VirtIOS390Bus bus)
	309	{
	310	return bus->console;
	311	}
	312
	313	/* Find a device by vring address */
	314	VirtIOS390Device s390_virtio_bus_find_vring(VirtIOS390Bus bus,
	315	ram_addr_t mem,
	316	int *vq_num)
	317	{
	318	VirtIOS390Device *_dev;
	319	DeviceState *dev;
	320	int i;
	321
d8bb00d6	322	QTAILQ_FOREACH(dev, &bus->bus.children, sibling) {
f3304eea AG	323	_dev = (VirtIOS390Device *)dev;
	324	for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) {
	325	if (!virtio_queue_get_addr(_dev->vdev, i))
	326	break;
	327	if (virtio_queue_get_addr(_dev->vdev, i) == mem) {
	328	if (vq_num) {
	329	*vq_num = i;
	330	}
	331	return _dev;
	332	}
	333	}
	334	}
	335
	336	return NULL;
	337	}
	338
	339	/* Find a device by device descriptor location */
	340	VirtIOS390Device s390_virtio_bus_find_mem(VirtIOS390Bus bus, ram_addr_t mem)
	341	{
	342	VirtIOS390Device *_dev;
	343	DeviceState *dev;
	344
d8bb00d6	345	QTAILQ_FOREACH(dev, &bus->bus.children, sibling) {
f3304eea AG	346	_dev = (VirtIOS390Device *)dev;
	347	if (_dev->dev_offs == mem) {
	348	return _dev;
	349	}
	350	}
	351
	352	return NULL;
	353	}
	354
	355	static void virtio_s390_notify(void *opaque, uint16_t vector)
	356	{
	357	VirtIOS390Device dev = (VirtIOS390Device)opaque;
	358	uint64_t token = s390_virtio_device_vq_token(dev, vector);
45fa769b AF	359	S390CPU *cpu = s390_cpu_addr2state(0);
45fa769b AF	360	CPUS390XState *env = &cpu->env;
f3304eea	361
7fa41e53	362	s390_virtio_irq(env, 0, token);
f3304eea AG	363	}
f3304eea AG	364
8172539d MT	365	static unsigned virtio_s390_get_features(void *opaque)
	366	{
	367	VirtIOS390Device dev = (VirtIOS390Device)opaque;
	368	return dev->host_features;
	369	}
	370
f3304eea AG	371	/************** S390 Virtio Bus Device Descriptions *****************/
	372
	373	static const VirtIOBindings virtio_s390_bindings = {
	374	.notify = virtio_s390_notify,
8172539d	375	.get_features = virtio_s390_get_features,
f3304eea AG	376	};
f3304eea AG	377
39bffca2 AL	378	static Property s390_virtio_net_properties[] = {
	379	DEFINE_NIC_PROPERTIES(VirtIOS390Device, nic),
	380	DEFINE_PROP_UINT32("x-txtimer", VirtIOS390Device,
	381	net.txtimer, TX_TIMER_INTERVAL),
	382	DEFINE_PROP_INT32("x-txburst", VirtIOS390Device,
	383	net.txburst, TX_BURST),
	384	DEFINE_PROP_STRING("tx", VirtIOS390Device, net.tx),
	385	DEFINE_PROP_END_OF_LIST(),
	386	};
	387
19b6914a AL	388	static void s390_virtio_net_class_init(ObjectClass klass, void data)
19b6914a AL	389	{
39bffca2 AL	390	DeviceClass *dc = DEVICE_CLASS(klass);
39bffca2 AL	391	VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
19b6914a	392
39bffca2 AL	393	k->init = s390_virtio_net_init;
39bffca2 AL	394	dc->props = s390_virtio_net_properties;
19b6914a AL	395	}
19b6914a AL	396
39bffca2 AL	397	static TypeInfo s390_virtio_net = {
	398	.name = "virtio-net-s390",
	399	.parent = TYPE_VIRTIO_S390_DEVICE,
	400	.instance_size = sizeof(VirtIOS390Device),
	401	.class_init = s390_virtio_net_class_init,
	402	};
	403
	404	static Property s390_virtio_blk_properties[] = {
12c5674b PB	405	DEFINE_BLOCK_PROPERTIES(VirtIOS390Device, blk.conf),
12c5674b PB	406	DEFINE_PROP_STRING("serial", VirtIOS390Device, blk.serial),
a6c5c84a PB	407	#ifdef __linux__
	408	DEFINE_PROP_BIT("scsi", VirtIOS390Device, blk.scsi, 0, true),
	409	#endif
39bffca2	410	DEFINE_PROP_END_OF_LIST(),
f3304eea AG	411	};
f3304eea AG	412
19b6914a AL	413	static void s390_virtio_blk_class_init(ObjectClass klass, void data)
19b6914a AL	414	{
39bffca2 AL	415	DeviceClass *dc = DEVICE_CLASS(klass);
39bffca2 AL	416	VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
19b6914a	417
39bffca2 AL	418	k->init = s390_virtio_blk_init;
39bffca2 AL	419	dc->props = s390_virtio_blk_properties;
19b6914a AL	420	}
19b6914a AL	421
39bffca2 AL	422	static TypeInfo s390_virtio_blk = {
	423	.name = "virtio-blk-s390",
	424	.parent = TYPE_VIRTIO_S390_DEVICE,
	425	.instance_size = sizeof(VirtIOS390Device),
	426	.class_init = s390_virtio_blk_class_init,
	427	};
	428
	429	static Property s390_virtio_serial_properties[] = {
	430	DEFINE_PROP_UINT32("max_ports", VirtIOS390Device,
	431	serial.max_virtserial_ports, 31),
	432	DEFINE_PROP_END_OF_LIST(),
f3304eea AG	433	};
f3304eea AG	434
19b6914a AL	435	static void s390_virtio_serial_class_init(ObjectClass klass, void data)
19b6914a AL	436	{
39bffca2 AL	437	DeviceClass *dc = DEVICE_CLASS(klass);
39bffca2 AL	438	VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
19b6914a	439
39bffca2 AL	440	k->init = s390_virtio_serial_init;
39bffca2 AL	441	dc->props = s390_virtio_serial_properties;
19b6914a AL	442	}
19b6914a AL	443
39bffca2 AL	444	static TypeInfo s390_virtio_serial = {
	445	.name = "virtio-serial-s390",
	446	.parent = TYPE_VIRTIO_S390_DEVICE,
	447	.instance_size = sizeof(VirtIOS390Device),
	448	.class_init = s390_virtio_serial_class_init,
f3304eea AG	449	};
f3304eea AG	450
d307af79	451	static int s390_virtio_busdev_init(DeviceState *dev)
f3304eea	452	{
f3304eea	453	VirtIOS390Device _dev = (VirtIOS390Device )dev;
19b6914a	454	VirtIOS390DeviceClass *_info = VIRTIO_S390_DEVICE_GET_CLASS(dev);
f3304eea AG	455
	456	return _info->init(_dev);
	457	}
	458
39bffca2	459	static void virtio_s390_device_class_init(ObjectClass klass, void data)
f3304eea	460	{
39bffca2	461	DeviceClass *dc = DEVICE_CLASS(klass);
f3304eea	462
39bffca2	463	dc->init = s390_virtio_busdev_init;
0d936928	464	dc->bus_type = TYPE_S390_VIRTIO_BUS;
39bffca2	465	dc->unplug = qdev_simple_unplug_cb;
f3304eea AG	466	}
f3304eea AG	467
19b6914a AL	468	static TypeInfo virtio_s390_device_info = {
	469	.name = TYPE_VIRTIO_S390_DEVICE,
	470	.parent = TYPE_DEVICE,
	471	.instance_size = sizeof(VirtIOS390Device),
39bffca2	472	.class_init = virtio_s390_device_class_init,
e87f7fc6	473	.class_size = sizeof(VirtIOS390DeviceClass),
19b6914a AL	474	.abstract = true,
	475	};
	476
973abc7f SH	477	static Property s390_virtio_scsi_properties[] = {
	478	DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOS390Device, host_features, scsi),
	479	DEFINE_PROP_END_OF_LIST(),
	480	};
	481
	482	static void s390_virtio_scsi_class_init(ObjectClass klass, void data)
	483	{
	484	DeviceClass *dc = DEVICE_CLASS(klass);
	485	VirtIOS390DeviceClass *k = VIRTIO_S390_DEVICE_CLASS(klass);
	486
	487	k->init = s390_virtio_scsi_init;
	488	dc->props = s390_virtio_scsi_properties;
	489	}
	490
	491	static TypeInfo s390_virtio_scsi = {
	492	.name = "virtio-scsi-s390",
	493	.parent = TYPE_VIRTIO_S390_DEVICE,
	494	.instance_size = sizeof(VirtIOS390Device),
	495	.class_init = s390_virtio_scsi_class_init,
	496	};
f3304eea AG	497
	498	/*************** S390 Virtio Bus Bridge Device *****************/
	499	/* Only required to have the virtio bus as child in the system bus */
	500
	501	static int s390_virtio_bridge_init(SysBusDevice *dev)
	502	{
	503	/* nothing */
	504	return 0;
	505	}
	506
999e12bb AL	507	static void s390_virtio_bridge_class_init(ObjectClass klass, void data)
999e12bb AL	508	{
39bffca2	509	DeviceClass *dc = DEVICE_CLASS(klass);
999e12bb AL	510	SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
	511
	512	k->init = s390_virtio_bridge_init;
39bffca2	513	dc->no_user = 1;
999e12bb AL	514	}
999e12bb AL	515
39bffca2 AL	516	static TypeInfo s390_virtio_bridge_info = {
	517	.name = "s390-virtio-bridge",
	518	.parent = TYPE_SYS_BUS_DEVICE,
	519	.instance_size = sizeof(SysBusDevice),
	520	.class_init = s390_virtio_bridge_class_init,
f3304eea AG	521	};
f3304eea AG	522
83f7d43a	523	static void s390_virtio_register_types(void)
f3304eea	524	{
0d936928	525	type_register_static(&s390_virtio_bus_info);
83f7d43a AF	526	type_register_static(&virtio_s390_device_info);
	527	type_register_static(&s390_virtio_serial);
	528	type_register_static(&s390_virtio_blk);
	529	type_register_static(&s390_virtio_net);
973abc7f	530	type_register_static(&s390_virtio_scsi);
39bffca2	531	type_register_static(&s390_virtio_bridge_info);
f3304eea AG	532	}
f3304eea AG	533
83f7d43a	534	type_init(s390_virtio_register_types)