[qemu.git] / hw / net / spapr_llan.c

/*
 * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator
 *
 * PAPR Inter-VM Logical Lan, aka ibmveth
 *
 * Copyright (c) 2010,2011 David Gibson, IBM Corporation.
 *
 * 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 "hw/hw.h"
#include "net/net.h"
#include "hw/qdev.h"
#include "hw/ppc/spapr.h"
#include "hw/ppc/spapr_vio.h"
#include "sysemu/sysemu.h"

#include <libfdt.h>

#define ETH_ALEN        6
#define MAX_PACKET_SIZE 65536

/*#define DEBUG*/

#ifdef DEBUG
#define DPRINTF(fmt...) do { fprintf(stderr, fmt); } while (0)
#else
#define DPRINTF(fmt...)
#endif

/*
 * Virtual LAN device
 */

typedef uint64_t vlan_bd_t;

#define VLAN_BD_VALID        0x8000000000000000ULL
#define VLAN_BD_TOGGLE       0x4000000000000000ULL
#define VLAN_BD_NO_CSUM      0x0200000000000000ULL
#define VLAN_BD_CSUM_GOOD    0x0100000000000000ULL
#define VLAN_BD_LEN_MASK     0x00ffffff00000000ULL
#define VLAN_BD_LEN(bd)      (((bd) & VLAN_BD_LEN_MASK) >> 32)
#define VLAN_BD_ADDR_MASK    0x00000000ffffffffULL
#define VLAN_BD_ADDR(bd)     ((bd) & VLAN_BD_ADDR_MASK)

#define VLAN_VALID_BD(addr, len) (VLAN_BD_VALID | \
                                  (((len) << 32) & VLAN_BD_LEN_MASK) |  \
                                  (addr & VLAN_BD_ADDR_MASK))

#define VLAN_RXQC_TOGGLE     0x80
#define VLAN_RXQC_VALID      0x40
#define VLAN_RXQC_NO_CSUM    0x02
#define VLAN_RXQC_CSUM_GOOD  0x01

#define VLAN_RQ_ALIGNMENT    16
#define VLAN_RXQ_BD_OFF      0
#define VLAN_FILTER_BD_OFF   8
#define VLAN_RX_BDS_OFF      16
/*
 * The final 8 bytes of the buffer list is a counter of frames dropped
 * because there was not a buffer in the buffer list capable of holding
 * the frame. We must avoid it, or the operating system will report garbage
 * for this statistic.
 */
#define VLAN_RX_BDS_LEN      (SPAPR_TCE_PAGE_SIZE - VLAN_RX_BDS_OFF - 8)
#define VLAN_MAX_BUFS        (VLAN_RX_BDS_LEN / 8)

#define TYPE_VIO_SPAPR_VLAN_DEVICE "spapr-vlan"
#define VIO_SPAPR_VLAN_DEVICE(obj) \
     OBJECT_CHECK(VIOsPAPRVLANDevice, (obj), TYPE_VIO_SPAPR_VLAN_DEVICE)

typedef struct VIOsPAPRVLANDevice {
    VIOsPAPRDevice sdev;
    NICConf nicconf;
    NICState *nic;
    bool isopen;
    target_ulong buf_list;
    uint32_t add_buf_ptr, use_buf_ptr, rx_bufs;
    target_ulong rxq_ptr;
} VIOsPAPRVLANDevice;

static int spapr_vlan_can_receive(NetClientState *nc)
{
    VIOsPAPRVLANDevice *dev = qemu_get_nic_opaque(nc);

    return (dev->isopen && dev->rx_bufs > 0);
}

static ssize_t spapr_vlan_receive(NetClientState *nc, const uint8_t *buf,
                                  size_t size)
{
    VIOsPAPRVLANDevice *dev = qemu_get_nic_opaque(nc);
    VIOsPAPRDevice *sdev = VIO_SPAPR_DEVICE(dev);
    vlan_bd_t rxq_bd = vio_ldq(sdev, dev->buf_list + VLAN_RXQ_BD_OFF);
    vlan_bd_t bd;
    int buf_ptr = dev->use_buf_ptr;
    uint64_t handle;
    uint8_t control;

    DPRINTF("spapr_vlan_receive() [%s] rx_bufs=%d\n", sdev->qdev.id,
            dev->rx_bufs);

    if (!dev->isopen) {
        return -1;
    }

    if (!dev->rx_bufs) {
        return -1;
    }

    do {
        buf_ptr += 8;
        if (buf_ptr >= (VLAN_RX_BDS_LEN + VLAN_RX_BDS_OFF)) {
            buf_ptr = VLAN_RX_BDS_OFF;
        }

        bd = vio_ldq(sdev, dev->buf_list + buf_ptr);
        DPRINTF("use_buf_ptr=%d bd=0x%016llx\n",
                buf_ptr, (unsigned long long)bd);
    } while ((!(bd & VLAN_BD_VALID) || (VLAN_BD_LEN(bd) < (size + 8)))
             && (buf_ptr != dev->use_buf_ptr));

    if (!(bd & VLAN_BD_VALID) || (VLAN_BD_LEN(bd) < (size + 8))) {
        /* Failed to find a suitable buffer */
        return -1;
    }

    /* Remove the buffer from the pool */
    dev->rx_bufs--;
    dev->use_buf_ptr = buf_ptr;
    vio_stq(sdev, dev->buf_list + dev->use_buf_ptr, 0);

    DPRINTF("Found buffer: ptr=%d num=%d\n", dev->use_buf_ptr, dev->rx_bufs);

    /* Transfer the packet data */
    if (spapr_vio_dma_write(sdev, VLAN_BD_ADDR(bd) + 8, buf, size) < 0) {
        return -1;
    }

    DPRINTF("spapr_vlan_receive: DMA write completed\n");

    /* Update the receive queue */
    control = VLAN_RXQC_TOGGLE | VLAN_RXQC_VALID;
    if (rxq_bd & VLAN_BD_TOGGLE) {
        control ^= VLAN_RXQC_TOGGLE;
    }

    handle = vio_ldq(sdev, VLAN_BD_ADDR(bd));
    vio_stq(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr + 8, handle);
    vio_stl(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr + 4, size);
    vio_sth(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr + 2, 8);
    vio_stb(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr, control);

    DPRINTF("wrote rxq entry (ptr=0x%llx): 0x%016llx 0x%016llx\n",
            (unsigned long long)dev->rxq_ptr,
            (unsigned long long)vio_ldq(sdev, VLAN_BD_ADDR(rxq_bd) +
                                        dev->rxq_ptr),
            (unsigned long long)vio_ldq(sdev, VLAN_BD_ADDR(rxq_bd) +
                                        dev->rxq_ptr + 8));

    dev->rxq_ptr += 16;
    if (dev->rxq_ptr >= VLAN_BD_LEN(rxq_bd)) {
        dev->rxq_ptr = 0;
        vio_stq(sdev, dev->buf_list + VLAN_RXQ_BD_OFF, rxq_bd ^ VLAN_BD_TOGGLE);
    }

    if (sdev->signal_state & 1) {
        qemu_irq_pulse(spapr_vio_qirq(sdev));
    }

    return size;
}

static NetClientInfo net_spapr_vlan_info = {
    .type = NET_CLIENT_OPTIONS_KIND_NIC,
    .size = sizeof(NICState),
    .can_receive = spapr_vlan_can_receive,
    .receive = spapr_vlan_receive,
};

static void spapr_vlan_reset(VIOsPAPRDevice *sdev)
{
    VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(sdev);

    dev->buf_list = 0;
    dev->rx_bufs = 0;
    dev->isopen = 0;
}

static void spapr_vlan_realize(VIOsPAPRDevice *sdev, Error **errp)
{
    VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(sdev);

    qemu_macaddr_default_if_unset(&dev->nicconf.macaddr);

    dev->nic = qemu_new_nic(&net_spapr_vlan_info, &dev->nicconf,
                            object_get_typename(OBJECT(sdev)), sdev->qdev.id, dev);
    qemu_format_nic_info_str(qemu_get_queue(dev->nic), dev->nicconf.macaddr.a);
}

static void spapr_vlan_instance_init(Object *obj)
{
    VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(obj);

    device_add_bootindex_property(obj, &dev->nicconf.bootindex,
                                  "bootindex", "",
                                  DEVICE(dev), NULL);
}

void spapr_vlan_create(VIOsPAPRBus *bus, NICInfo *nd)
{
    DeviceState *dev;

    dev = qdev_create(&bus->bus, "spapr-vlan");

    qdev_set_nic_properties(dev, nd);

    qdev_init_nofail(dev);
}

static int spapr_vlan_devnode(VIOsPAPRDevice *dev, void *fdt, int node_off)
{
    VIOsPAPRVLANDevice *vdev = VIO_SPAPR_VLAN_DEVICE(dev);
    uint8_t padded_mac[8] = {0, 0};
    int ret;

    /* Some old phyp versions give the mac address in an 8-byte
     * property.  The kernel driver has an insane workaround for this;
     * rather than doing the obvious thing and checking the property
     * length, it checks whether the first byte has 0b10 in the low
     * bits.  If a correct 6-byte property has a different first byte
     * the kernel will get the wrong mac address, overrunning its
     * buffer in the process (read only, thank goodness).
     *
     * Here we workaround the kernel workaround by always supplying an
     * 8-byte property, with the mac address in the last six bytes */
    memcpy(&padded_mac[2], &vdev->nicconf.macaddr, ETH_ALEN);
    ret = fdt_setprop(fdt, node_off, "local-mac-address",
                      padded_mac, sizeof(padded_mac));
    if (ret < 0) {
        return ret;
    }

    ret = fdt_setprop_cell(fdt, node_off, "ibm,mac-address-filters", 0);
    if (ret < 0) {
        return ret;
    }

    return 0;
}

static int check_bd(VIOsPAPRVLANDevice *dev, vlan_bd_t bd,
                    target_ulong alignment)
{
    if ((VLAN_BD_ADDR(bd) % alignment)
        || (VLAN_BD_LEN(bd) % alignment)) {
        return -1;
    }

    if (!spapr_vio_dma_valid(&dev->sdev, VLAN_BD_ADDR(bd),
                             VLAN_BD_LEN(bd), DMA_DIRECTION_FROM_DEVICE)
        || !spapr_vio_dma_valid(&dev->sdev, VLAN_BD_ADDR(bd),
                                VLAN_BD_LEN(bd), DMA_DIRECTION_TO_DEVICE)) {
        return -1;
    }

    return 0;
}

static target_ulong h_register_logical_lan(PowerPCCPU *cpu,
                                           sPAPREnvironment *spapr,
                                           target_ulong opcode,
                                           target_ulong *args)
{
    target_ulong reg = args[0];
    target_ulong buf_list = args[1];
    target_ulong rec_queue = args[2];
    target_ulong filter_list = args[3];
    VIOsPAPRDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg);
    VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(sdev);
    vlan_bd_t filter_list_bd;

    if (!dev) {
        return H_PARAMETER;
    }

    if (dev->isopen) {
        hcall_dprintf("H_REGISTER_LOGICAL_LAN called twice without "
                      "H_FREE_LOGICAL_LAN\n");
        return H_RESOURCE;
    }

    if (check_bd(dev, VLAN_VALID_BD(buf_list, SPAPR_TCE_PAGE_SIZE),
                 SPAPR_TCE_PAGE_SIZE) < 0) {
        hcall_dprintf("Bad buf_list 0x" TARGET_FMT_lx "\n", buf_list);
        return H_PARAMETER;
    }

    filter_list_bd = VLAN_VALID_BD(filter_list, SPAPR_TCE_PAGE_SIZE);
    if (check_bd(dev, filter_list_bd, SPAPR_TCE_PAGE_SIZE) < 0) {
        hcall_dprintf("Bad filter_list 0x" TARGET_FMT_lx "\n", filter_list);
        return H_PARAMETER;
    }

    if (!(rec_queue & VLAN_BD_VALID)
        || (check_bd(dev, rec_queue, VLAN_RQ_ALIGNMENT) < 0)) {
        hcall_dprintf("Bad receive queue\n");
        return H_PARAMETER;
    }

    dev->buf_list = buf_list;
    sdev->signal_state = 0;

    rec_queue &= ~VLAN_BD_TOGGLE;

    /* Initialize the buffer list */
    vio_stq(sdev, buf_list, rec_queue);
    vio_stq(sdev, buf_list + 8, filter_list_bd);
    spapr_vio_dma_set(sdev, buf_list + VLAN_RX_BDS_OFF, 0,
                      SPAPR_TCE_PAGE_SIZE - VLAN_RX_BDS_OFF);
    dev->add_buf_ptr = VLAN_RX_BDS_OFF - 8;
    dev->use_buf_ptr = VLAN_RX_BDS_OFF - 8;
    dev->rx_bufs = 0;
    dev->rxq_ptr = 0;

    /* Initialize the receive queue */
    spapr_vio_dma_set(sdev, VLAN_BD_ADDR(rec_queue), 0, VLAN_BD_LEN(rec_queue));

    dev->isopen = 1;
    qemu_flush_queued_packets(qemu_get_queue(dev->nic));

    return H_SUCCESS;
}


static target_ulong h_free_logical_lan(PowerPCCPU *cpu, sPAPREnvironment *spapr,
                                       target_ulong opcode, target_ulong *args)
{
    target_ulong reg = args[0];
    VIOsPAPRDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg);
    VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(sdev);

    if (!dev) {
        return H_PARAMETER;
    }

    if (!dev->isopen) {
        hcall_dprintf("H_FREE_LOGICAL_LAN called without "
                      "H_REGISTER_LOGICAL_LAN\n");
        return H_RESOURCE;
    }

    spapr_vlan_reset(sdev);
    return H_SUCCESS;
}

static target_ulong h_add_logical_lan_buffer(PowerPCCPU *cpu,
                                             sPAPREnvironment *spapr,
                                             target_ulong opcode,
                                             target_ulong *args)
{
    target_ulong reg = args[0];
    target_ulong buf = args[1];
    VIOsPAPRDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg);
    VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(sdev);
    vlan_bd_t bd;

    DPRINTF("H_ADD_LOGICAL_LAN_BUFFER(0x" TARGET_FMT_lx
            ", 0x" TARGET_FMT_lx ")\n", reg, buf);

    if (!sdev) {
        hcall_dprintf("Bad device\n");
        return H_PARAMETER;
    }

    if ((check_bd(dev, buf, 4) < 0)
        || (VLAN_BD_LEN(buf) < 16)) {
        hcall_dprintf("Bad buffer enqueued\n");
        return H_PARAMETER;
    }

    if (!dev->isopen || dev->rx_bufs >= VLAN_MAX_BUFS) {
        return H_RESOURCE;
    }

    do {
        dev->add_buf_ptr += 8;
        if (dev->add_buf_ptr >= (VLAN_RX_BDS_LEN + VLAN_RX_BDS_OFF)) {
            dev->add_buf_ptr = VLAN_RX_BDS_OFF;
        }

        bd = vio_ldq(sdev, dev->buf_list + dev->add_buf_ptr);
    } while (bd & VLAN_BD_VALID);

    vio_stq(sdev, dev->buf_list + dev->add_buf_ptr, buf);

    dev->rx_bufs++;

    qemu_flush_queued_packets(qemu_get_queue(dev->nic));

    DPRINTF("h_add_logical_lan_buffer():  Added buf  ptr=%d  rx_bufs=%d"
            " bd=0x%016llx\n", dev->add_buf_ptr, dev->rx_bufs,
            (unsigned long long)buf);

    return H_SUCCESS;
}

static target_ulong h_send_logical_lan(PowerPCCPU *cpu, sPAPREnvironment *spapr,
                                       target_ulong opcode, target_ulong *args)
{
    target_ulong reg = args[0];
    target_ulong *bufs = args + 1;
    target_ulong continue_token = args[7];
    VIOsPAPRDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg);
    VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(sdev);
    unsigned total_len;
    uint8_t *lbuf, *p;
    int i, nbufs;
    int ret;

    DPRINTF("H_SEND_LOGICAL_LAN(0x" TARGET_FMT_lx ", <bufs>, 0x"
            TARGET_FMT_lx ")\n", reg, continue_token);

    if (!sdev) {
        return H_PARAMETER;
    }

    DPRINTF("rxbufs = %d\n", dev->rx_bufs);

    if (!dev->isopen) {
        return H_DROPPED;
    }

    if (continue_token) {
        return H_HARDWARE; /* FIXME actually handle this */
    }

    total_len = 0;
    for (i = 0; i < 6; i++) {
        DPRINTF("   buf desc: 0x" TARGET_FMT_lx "\n", bufs[i]);
        if (!(bufs[i] & VLAN_BD_VALID)) {
            break;
        }
        total_len += VLAN_BD_LEN(bufs[i]);
    }

    nbufs = i;
    DPRINTF("h_send_logical_lan() %d buffers, total length 0x%x\n",
            nbufs, total_len);

    if (total_len == 0) {
        return H_SUCCESS;
    }

    if (total_len > MAX_PACKET_SIZE) {
        /* Don't let the guest force too large an allocation */
        return H_RESOURCE;
    }

    lbuf = alloca(total_len);
    p = lbuf;
    for (i = 0; i < nbufs; i++) {
        ret = spapr_vio_dma_read(sdev, VLAN_BD_ADDR(bufs[i]),
                                 p, VLAN_BD_LEN(bufs[i]));
        if (ret < 0) {
            return ret;
        }

        p += VLAN_BD_LEN(bufs[i]);
    }

    qemu_send_packet(qemu_get_queue(dev->nic), lbuf, total_len);

    return H_SUCCESS;
}

static target_ulong h_multicast_ctrl(PowerPCCPU *cpu, sPAPREnvironment *spapr,
                                     target_ulong opcode, target_ulong *args)
{
    target_ulong reg = args[0];
    VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg);

    if (!dev) {
        return H_PARAMETER;
    }

    return H_SUCCESS;
}

static Property spapr_vlan_properties[] = {
    DEFINE_SPAPR_PROPERTIES(VIOsPAPRVLANDevice, sdev),
    DEFINE_NIC_PROPERTIES(VIOsPAPRVLANDevice, nicconf),
    DEFINE_PROP_END_OF_LIST(),
};

static const VMStateDescription vmstate_spapr_llan = {
    .name = "spapr_llan",
    .version_id = 1,
    .minimum_version_id = 1,
    .fields = (VMStateField[]) {
        VMSTATE_SPAPR_VIO(sdev, VIOsPAPRVLANDevice),
        /* LLAN state */
        VMSTATE_BOOL(isopen, VIOsPAPRVLANDevice),
        VMSTATE_UINTTL(buf_list, VIOsPAPRVLANDevice),
        VMSTATE_UINT32(add_buf_ptr, VIOsPAPRVLANDevice),
        VMSTATE_UINT32(use_buf_ptr, VIOsPAPRVLANDevice),
        VMSTATE_UINT32(rx_bufs, VIOsPAPRVLANDevice),
        VMSTATE_UINTTL(rxq_ptr, VIOsPAPRVLANDevice),

        VMSTATE_END_OF_LIST()
    },
};

static void spapr_vlan_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);
    VIOsPAPRDeviceClass *k = VIO_SPAPR_DEVICE_CLASS(klass);

    k->realize = spapr_vlan_realize;
    k->reset = spapr_vlan_reset;
    k->devnode = spapr_vlan_devnode;
    k->dt_name = "l-lan";
    k->dt_type = "network";
    k->dt_compatible = "IBM,l-lan";
    k->signal_mask = 0x1;
    set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
    dc->props = spapr_vlan_properties;
    k->rtce_window_size = 0x10000000;
    dc->vmsd = &vmstate_spapr_llan;
}

static const TypeInfo spapr_vlan_info = {
    .name          = TYPE_VIO_SPAPR_VLAN_DEVICE,
    .parent        = TYPE_VIO_SPAPR_DEVICE,
    .instance_size = sizeof(VIOsPAPRVLANDevice),
    .class_init    = spapr_vlan_class_init,
    .instance_init = spapr_vlan_instance_init,
};

static void spapr_vlan_register_types(void)
{
    spapr_register_hypercall(H_REGISTER_LOGICAL_LAN, h_register_logical_lan);
    spapr_register_hypercall(H_FREE_LOGICAL_LAN, h_free_logical_lan);
    spapr_register_hypercall(H_SEND_LOGICAL_LAN, h_send_logical_lan);
    spapr_register_hypercall(H_ADD_LOGICAL_LAN_BUFFER,
                             h_add_logical_lan_buffer);
    spapr_register_hypercall(H_MULTICAST_CTRL, h_multicast_ctrl);
    type_register_static(&spapr_vlan_info);
}

type_init(spapr_vlan_register_types)
Commit	Line	Data
8d90ad90 DG	1	/*
	2	* QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator
	3	*
	4	* PAPR Inter-VM Logical Lan, aka ibmveth
	5	*
	6	* Copyright (c) 2010,2011 David Gibson, IBM Corporation.
	7	*
	8	* Permission is hereby granted, free of charge, to any person obtaining a copy
	9	* of this software and associated documentation files (the "Software"), to deal
	10	* in the Software without restriction, including without limitation the rights
	11	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	12	* copies of the Software, and to permit persons to whom the Software is
	13	* furnished to do so, subject to the following conditions:
	14	*
	15	* The above copyright notice and this permission notice shall be included in
	16	* all copies or substantial portions of the Software.
	17	*
	18	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	19	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	20	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	21	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	22	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	23	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	24	* THE SOFTWARE.
	25	*
	26	*/
83c9f4ca	27	#include "hw/hw.h"
1422e32d	28	#include "net/net.h"
8d90ad90	29	#include "hw/qdev.h"
0d09e41a PB	30	#include "hw/ppc/spapr.h"
0d09e41a PB	31	#include "hw/ppc/spapr_vio.h"
ad4f62d0	32	#include "sysemu/sysemu.h"
8d90ad90 DG	33
	34	#include <libfdt.h>
	35
	36	#define ETH_ALEN 6
	37	#define MAX_PACKET_SIZE 65536
	38
	39	/#define DEBUG/
	40
	41	#ifdef DEBUG
f6bda9cb	42	#define DPRINTF(fmt...) do { fprintf(stderr, fmt); } while (0)
8d90ad90	43	#else
f6bda9cb	44	#define DPRINTF(fmt...)
8d90ad90 DG	45	#endif
	46
	47	/*
	48	* Virtual LAN device
	49	*/
	50
	51	typedef uint64_t vlan_bd_t;
	52
	53	#define VLAN_BD_VALID 0x8000000000000000ULL
	54	#define VLAN_BD_TOGGLE 0x4000000000000000ULL
	55	#define VLAN_BD_NO_CSUM 0x0200000000000000ULL
	56	#define VLAN_BD_CSUM_GOOD 0x0100000000000000ULL
	57	#define VLAN_BD_LEN_MASK 0x00ffffff00000000ULL
	58	#define VLAN_BD_LEN(bd) (((bd) & VLAN_BD_LEN_MASK) >> 32)
	59	#define VLAN_BD_ADDR_MASK 0x00000000ffffffffULL
	60	#define VLAN_BD_ADDR(bd) ((bd) & VLAN_BD_ADDR_MASK)
	61
	62	#define VLAN_VALID_BD(addr, len) (VLAN_BD_VALID \| \
	63	(((len) << 32) & VLAN_BD_LEN_MASK) \| \
	64	(addr & VLAN_BD_ADDR_MASK))
	65
	66	#define VLAN_RXQC_TOGGLE 0x80
	67	#define VLAN_RXQC_VALID 0x40
	68	#define VLAN_RXQC_NO_CSUM 0x02
	69	#define VLAN_RXQC_CSUM_GOOD 0x01
	70
	71	#define VLAN_RQ_ALIGNMENT 16
	72	#define VLAN_RXQ_BD_OFF 0
	73	#define VLAN_FILTER_BD_OFF 8
	74	#define VLAN_RX_BDS_OFF 16
439ce140 AB	75	/*
	76	* The final 8 bytes of the buffer list is a counter of frames dropped
	77	* because there was not a buffer in the buffer list capable of holding
	78	* the frame. We must avoid it, or the operating system will report garbage
	79	* for this statistic.
	80	*/
	81	#define VLAN_RX_BDS_LEN (SPAPR_TCE_PAGE_SIZE - VLAN_RX_BDS_OFF - 8)
	82	#define VLAN_MAX_BUFS (VLAN_RX_BDS_LEN / 8)
8d90ad90	83
fd506b4f DG	84	#define TYPE_VIO_SPAPR_VLAN_DEVICE "spapr-vlan"
	85	#define VIO_SPAPR_VLAN_DEVICE(obj) \
	86	OBJECT_CHECK(VIOsPAPRVLANDevice, (obj), TYPE_VIO_SPAPR_VLAN_DEVICE)
	87
8d90ad90 DG	88	typedef struct VIOsPAPRVLANDevice {
	89	VIOsPAPRDevice sdev;
	90	NICConf nicconf;
	91	NICState *nic;
686fefe4	92	bool isopen;
8d90ad90	93	target_ulong buf_list;
686fefe4	94	uint32_t add_buf_ptr, use_buf_ptr, rx_bufs;
8d90ad90 DG	95	target_ulong rxq_ptr;
	96	} VIOsPAPRVLANDevice;
	97
4e68f7a0	98	static int spapr_vlan_can_receive(NetClientState *nc)
8d90ad90	99	{
cc1f0f45	100	VIOsPAPRVLANDevice *dev = qemu_get_nic_opaque(nc);
8d90ad90 DG	101
	102	return (dev->isopen && dev->rx_bufs > 0);
	103	}
	104
4e68f7a0	105	static ssize_t spapr_vlan_receive(NetClientState nc, const uint8_t buf,
8d90ad90 DG	106	size_t size)
8d90ad90 DG	107	{
fd506b4f DG	108	VIOsPAPRVLANDevice *dev = qemu_get_nic_opaque(nc);
fd506b4f DG	109	VIOsPAPRDevice *sdev = VIO_SPAPR_DEVICE(dev);
ad0ebb91	110	vlan_bd_t rxq_bd = vio_ldq(sdev, dev->buf_list + VLAN_RXQ_BD_OFF);
8d90ad90 DG	111	vlan_bd_t bd;
	112	int buf_ptr = dev->use_buf_ptr;
	113	uint64_t handle;
	114	uint8_t control;
	115
f6bda9cb	116	DPRINTF("spapr_vlan_receive() [%s] rx_bufs=%d\n", sdev->qdev.id,
8d90ad90 DG	117	dev->rx_bufs);
	118
	119	if (!dev->isopen) {
	120	return -1;
	121	}
	122
	123	if (!dev->rx_bufs) {
	124	return -1;
	125	}
	126
	127	do {
	128	buf_ptr += 8;
439ce140	129	if (buf_ptr >= (VLAN_RX_BDS_LEN + VLAN_RX_BDS_OFF)) {
8d90ad90 DG	130	buf_ptr = VLAN_RX_BDS_OFF;
	131	}
	132
ad0ebb91	133	bd = vio_ldq(sdev, dev->buf_list + buf_ptr);
f6bda9cb	134	DPRINTF("use_buf_ptr=%d bd=0x%016llx\n",
8d90ad90 DG	135	buf_ptr, (unsigned long long)bd);
	136	} while ((!(bd & VLAN_BD_VALID) \|\| (VLAN_BD_LEN(bd) < (size + 8)))
	137	&& (buf_ptr != dev->use_buf_ptr));
	138
	139	if (!(bd & VLAN_BD_VALID) \|\| (VLAN_BD_LEN(bd) < (size + 8))) {
	140	/* Failed to find a suitable buffer */
	141	return -1;
	142	}
	143
	144	/* Remove the buffer from the pool */
	145	dev->rx_bufs--;
	146	dev->use_buf_ptr = buf_ptr;
ad0ebb91	147	vio_stq(sdev, dev->buf_list + dev->use_buf_ptr, 0);
8d90ad90	148
f6bda9cb	149	DPRINTF("Found buffer: ptr=%d num=%d\n", dev->use_buf_ptr, dev->rx_bufs);
8d90ad90 DG	150
8d90ad90 DG	151	/* Transfer the packet data */
ad0ebb91	152	if (spapr_vio_dma_write(sdev, VLAN_BD_ADDR(bd) + 8, buf, size) < 0) {
8d90ad90 DG	153	return -1;
	154	}
	155
f6bda9cb	156	DPRINTF("spapr_vlan_receive: DMA write completed\n");
8d90ad90 DG	157
	158	/* Update the receive queue */
	159	control = VLAN_RXQC_TOGGLE \| VLAN_RXQC_VALID;
	160	if (rxq_bd & VLAN_BD_TOGGLE) {
	161	control ^= VLAN_RXQC_TOGGLE;
	162	}
	163
ad0ebb91 DG	164	handle = vio_ldq(sdev, VLAN_BD_ADDR(bd));
	165	vio_stq(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr + 8, handle);
	166	vio_stl(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr + 4, size);
	167	vio_sth(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr + 2, 8);
	168	vio_stb(sdev, VLAN_BD_ADDR(rxq_bd) + dev->rxq_ptr, control);
8d90ad90	169
f6bda9cb	170	DPRINTF("wrote rxq entry (ptr=0x%llx): 0x%016llx 0x%016llx\n",
8d90ad90	171	(unsigned long long)dev->rxq_ptr,
ad0ebb91	172	(unsigned long long)vio_ldq(sdev, VLAN_BD_ADDR(rxq_bd) +
8d90ad90	173	dev->rxq_ptr),
ad0ebb91	174	(unsigned long long)vio_ldq(sdev, VLAN_BD_ADDR(rxq_bd) +
8d90ad90 DG	175	dev->rxq_ptr + 8));
	176
	177	dev->rxq_ptr += 16;
	178	if (dev->rxq_ptr >= VLAN_BD_LEN(rxq_bd)) {
	179	dev->rxq_ptr = 0;
ad0ebb91	180	vio_stq(sdev, dev->buf_list + VLAN_RXQ_BD_OFF, rxq_bd ^ VLAN_BD_TOGGLE);
8d90ad90 DG	181	}
	182
	183	if (sdev->signal_state & 1) {
a307d594	184	qemu_irq_pulse(spapr_vio_qirq(sdev));
8d90ad90 DG	185	}
	186
	187	return size;
	188	}
	189
	190	static NetClientInfo net_spapr_vlan_info = {
2be64a68	191	.type = NET_CLIENT_OPTIONS_KIND_NIC,
8d90ad90 DG	192	.size = sizeof(NICState),
	193	.can_receive = spapr_vlan_can_receive,
	194	.receive = spapr_vlan_receive,
	195	};
	196
c17491b6 DG	197	static void spapr_vlan_reset(VIOsPAPRDevice *sdev)
c17491b6 DG	198	{
fd506b4f	199	VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(sdev);
c17491b6 DG	200
	201	dev->buf_list = 0;
	202	dev->rx_bufs = 0;
	203	dev->isopen = 0;
	204	}
	205
28b07e73	206	static void spapr_vlan_realize(VIOsPAPRDevice sdev, Error *errp)
8d90ad90	207	{
fd506b4f	208	VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(sdev);
8d90ad90 DG	209
	210	qemu_macaddr_default_if_unset(&dev->nicconf.macaddr);
	211
	212	dev->nic = qemu_new_nic(&net_spapr_vlan_info, &dev->nicconf,
f79f2bfc	213	object_get_typename(OBJECT(sdev)), sdev->qdev.id, dev);
b356f76d	214	qemu_format_nic_info_str(qemu_get_queue(dev->nic), dev->nicconf.macaddr.a);
8d90ad90 DG	215	}
8d90ad90 DG	216
dfe79cf2 GA	217	static void spapr_vlan_instance_init(Object *obj)
	218	{
	219	VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(obj);
	220
	221	device_add_bootindex_property(obj, &dev->nicconf.bootindex,
	222	"bootindex", "",
	223	DEVICE(dev), NULL);
	224	}
	225
d601fac4	226	void spapr_vlan_create(VIOsPAPRBus bus, NICInfo nd)
8d90ad90 DG	227	{
8d90ad90 DG	228	DeviceState *dev;
8d90ad90 DG	229
8d90ad90 DG	230	dev = qdev_create(&bus->bus, "spapr-vlan");
8d90ad90 DG	231
	232	qdev_set_nic_properties(dev, nd);
	233
	234	qdev_init_nofail(dev);
8d90ad90 DG	235	}
	236
	237	static int spapr_vlan_devnode(VIOsPAPRDevice dev, void fdt, int node_off)
	238	{
fd506b4f	239	VIOsPAPRVLANDevice *vdev = VIO_SPAPR_VLAN_DEVICE(dev);
8d90ad90 DG	240	uint8_t padded_mac[8] = {0, 0};
	241	int ret;
	242
	243	/* Some old phyp versions give the mac address in an 8-byte
	244	* property. The kernel driver has an insane workaround for this;
	245	* rather than doing the obvious thing and checking the property
	246	* length, it checks whether the first byte has 0b10 in the low
	247	* bits. If a correct 6-byte property has a different first byte
	248	* the kernel will get the wrong mac address, overrunning its
	249	* buffer in the process (read only, thank goodness).
	250	*
	251	* Here we workaround the kernel workaround by always supplying an
	252	* 8-byte property, with the mac address in the last six bytes */
	253	memcpy(&padded_mac[2], &vdev->nicconf.macaddr, ETH_ALEN);
	254	ret = fdt_setprop(fdt, node_off, "local-mac-address",
	255	padded_mac, sizeof(padded_mac));
	256	if (ret < 0) {
	257	return ret;
	258	}
	259
	260	ret = fdt_setprop_cell(fdt, node_off, "ibm,mac-address-filters", 0);
	261	if (ret < 0) {
	262	return ret;
	263	}
	264
	265	return 0;
	266	}
	267
	268	static int check_bd(VIOsPAPRVLANDevice *dev, vlan_bd_t bd,
	269	target_ulong alignment)
	270	{
	271	if ((VLAN_BD_ADDR(bd) % alignment)
	272	\|\| (VLAN_BD_LEN(bd) % alignment)) {
	273	return -1;
	274	}
	275
ad0ebb91 DG	276	if (!spapr_vio_dma_valid(&dev->sdev, VLAN_BD_ADDR(bd),
	277	VLAN_BD_LEN(bd), DMA_DIRECTION_FROM_DEVICE)
	278	\|\| !spapr_vio_dma_valid(&dev->sdev, VLAN_BD_ADDR(bd),
	279	VLAN_BD_LEN(bd), DMA_DIRECTION_TO_DEVICE)) {
8d90ad90 DG	280	return -1;
	281	}
	282
	283	return 0;
	284	}
	285
b13ce26d	286	static target_ulong h_register_logical_lan(PowerPCCPU *cpu,
8d90ad90 DG	287	sPAPREnvironment *spapr,
	288	target_ulong opcode,
	289	target_ulong *args)
	290	{
	291	target_ulong reg = args[0];
	292	target_ulong buf_list = args[1];
	293	target_ulong rec_queue = args[2];
	294	target_ulong filter_list = args[3];
	295	VIOsPAPRDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg);
fd506b4f	296	VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(sdev);
8d90ad90	297	vlan_bd_t filter_list_bd;
8d90ad90 DG	298
	299	if (!dev) {
	300	return H_PARAMETER;
	301	}
	302
	303	if (dev->isopen) {
	304	hcall_dprintf("H_REGISTER_LOGICAL_LAN called twice without "
	305	"H_FREE_LOGICAL_LAN\n");
	306	return H_RESOURCE;
	307	}
	308
ad0ebb91 DG	309	if (check_bd(dev, VLAN_VALID_BD(buf_list, SPAPR_TCE_PAGE_SIZE),
ad0ebb91 DG	310	SPAPR_TCE_PAGE_SIZE) < 0) {
d9599c92	311	hcall_dprintf("Bad buf_list 0x" TARGET_FMT_lx "\n", buf_list);
8d90ad90 DG	312	return H_PARAMETER;
	313	}
	314
ad0ebb91 DG	315	filter_list_bd = VLAN_VALID_BD(filter_list, SPAPR_TCE_PAGE_SIZE);
ad0ebb91 DG	316	if (check_bd(dev, filter_list_bd, SPAPR_TCE_PAGE_SIZE) < 0) {
d9599c92	317	hcall_dprintf("Bad filter_list 0x" TARGET_FMT_lx "\n", filter_list);
8d90ad90 DG	318	return H_PARAMETER;
	319	}
	320
	321	if (!(rec_queue & VLAN_BD_VALID)
	322	\|\| (check_bd(dev, rec_queue, VLAN_RQ_ALIGNMENT) < 0)) {
d9599c92	323	hcall_dprintf("Bad receive queue\n");
8d90ad90 DG	324	return H_PARAMETER;
	325	}
	326
	327	dev->buf_list = buf_list;
	328	sdev->signal_state = 0;
	329
	330	rec_queue &= ~VLAN_BD_TOGGLE;
	331
	332	/* Initialize the buffer list */
ad0ebb91 DG	333	vio_stq(sdev, buf_list, rec_queue);
	334	vio_stq(sdev, buf_list + 8, filter_list_bd);
	335	spapr_vio_dma_set(sdev, buf_list + VLAN_RX_BDS_OFF, 0,
	336	SPAPR_TCE_PAGE_SIZE - VLAN_RX_BDS_OFF);
8d90ad90 DG	337	dev->add_buf_ptr = VLAN_RX_BDS_OFF - 8;
	338	dev->use_buf_ptr = VLAN_RX_BDS_OFF - 8;
	339	dev->rx_bufs = 0;
	340	dev->rxq_ptr = 0;
	341
	342	/* Initialize the receive queue */
ad0ebb91	343	spapr_vio_dma_set(sdev, VLAN_BD_ADDR(rec_queue), 0, VLAN_BD_LEN(rec_queue));
8d90ad90 DG	344
8d90ad90 DG	345	dev->isopen = 1;
e0ff466c AK	346	qemu_flush_queued_packets(qemu_get_queue(dev->nic));
e0ff466c AK	347
8d90ad90 DG	348	return H_SUCCESS;
	349	}
	350
	351
b13ce26d	352	static target_ulong h_free_logical_lan(PowerPCCPU cpu, sPAPREnvironment spapr,
8d90ad90 DG	353	target_ulong opcode, target_ulong *args)
	354	{
	355	target_ulong reg = args[0];
	356	VIOsPAPRDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg);
fd506b4f	357	VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(sdev);
8d90ad90 DG	358
	359	if (!dev) {
	360	return H_PARAMETER;
	361	}
	362
	363	if (!dev->isopen) {
	364	hcall_dprintf("H_FREE_LOGICAL_LAN called without "
	365	"H_REGISTER_LOGICAL_LAN\n");
	366	return H_RESOURCE;
	367	}
	368
c17491b6	369	spapr_vlan_reset(sdev);
8d90ad90 DG	370	return H_SUCCESS;
	371	}
	372
b13ce26d	373	static target_ulong h_add_logical_lan_buffer(PowerPCCPU *cpu,
8d90ad90 DG	374	sPAPREnvironment *spapr,
	375	target_ulong opcode,
	376	target_ulong *args)
	377	{
	378	target_ulong reg = args[0];
	379	target_ulong buf = args[1];
	380	VIOsPAPRDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg);
fd506b4f	381	VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(sdev);
8d90ad90 DG	382	vlan_bd_t bd;
8d90ad90 DG	383
f6bda9cb	384	DPRINTF("H_ADD_LOGICAL_LAN_BUFFER(0x" TARGET_FMT_lx
8d90ad90 DG	385	", 0x" TARGET_FMT_lx ")\n", reg, buf);
	386
	387	if (!sdev) {
d9599c92	388	hcall_dprintf("Bad device\n");
8d90ad90 DG	389	return H_PARAMETER;
	390	}
	391
	392	if ((check_bd(dev, buf, 4) < 0)
	393	\|\| (VLAN_BD_LEN(buf) < 16)) {
d9599c92	394	hcall_dprintf("Bad buffer enqueued\n");
8d90ad90 DG	395	return H_PARAMETER;
	396	}
	397
	398	if (!dev->isopen \|\| dev->rx_bufs >= VLAN_MAX_BUFS) {
	399	return H_RESOURCE;
	400	}
	401
	402	do {
	403	dev->add_buf_ptr += 8;
439ce140	404	if (dev->add_buf_ptr >= (VLAN_RX_BDS_LEN + VLAN_RX_BDS_OFF)) {
8d90ad90 DG	405	dev->add_buf_ptr = VLAN_RX_BDS_OFF;
	406	}
	407
ad0ebb91	408	bd = vio_ldq(sdev, dev->buf_list + dev->add_buf_ptr);
8d90ad90 DG	409	} while (bd & VLAN_BD_VALID);
8d90ad90 DG	410
ad0ebb91	411	vio_stq(sdev, dev->buf_list + dev->add_buf_ptr, buf);
8d90ad90 DG	412
	413	dev->rx_bufs++;
	414
0a61f3b4 AK	415	qemu_flush_queued_packets(qemu_get_queue(dev->nic));
0a61f3b4 AK	416
f6bda9cb	417	DPRINTF("h_add_logical_lan_buffer(): Added buf ptr=%d rx_bufs=%d"
8d90ad90 DG	418	" bd=0x%016llx\n", dev->add_buf_ptr, dev->rx_bufs,
	419	(unsigned long long)buf);
	420
	421	return H_SUCCESS;
	422	}
	423
b13ce26d	424	static target_ulong h_send_logical_lan(PowerPCCPU cpu, sPAPREnvironment spapr,
8d90ad90 DG	425	target_ulong opcode, target_ulong *args)
	426	{
	427	target_ulong reg = args[0];
	428	target_ulong *bufs = args + 1;
	429	target_ulong continue_token = args[7];
	430	VIOsPAPRDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg);
fd506b4f	431	VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(sdev);
8d90ad90 DG	432	unsigned total_len;
	433	uint8_t lbuf, p;
	434	int i, nbufs;
	435	int ret;
	436
f6bda9cb	437	DPRINTF("H_SEND_LOGICAL_LAN(0x" TARGET_FMT_lx ", <bufs>, 0x"
8d90ad90 DG	438	TARGET_FMT_lx ")\n", reg, continue_token);
	439
	440	if (!sdev) {
	441	return H_PARAMETER;
	442	}
	443
f6bda9cb	444	DPRINTF("rxbufs = %d\n", dev->rx_bufs);
8d90ad90 DG	445
	446	if (!dev->isopen) {
	447	return H_DROPPED;
	448	}
	449
	450	if (continue_token) {
	451	return H_HARDWARE; /* FIXME actually handle this */
	452	}
	453
	454	total_len = 0;
	455	for (i = 0; i < 6; i++) {
f6bda9cb	456	DPRINTF(" buf desc: 0x" TARGET_FMT_lx "\n", bufs[i]);
8d90ad90 DG	457	if (!(bufs[i] & VLAN_BD_VALID)) {
	458	break;
	459	}
	460	total_len += VLAN_BD_LEN(bufs[i]);
	461	}
	462
	463	nbufs = i;
f6bda9cb	464	DPRINTF("h_send_logical_lan() %d buffers, total length 0x%x\n",
8d90ad90 DG	465	nbufs, total_len);
	466
	467	if (total_len == 0) {
	468	return H_SUCCESS;
	469	}
	470
	471	if (total_len > MAX_PACKET_SIZE) {
	472	/* Don't let the guest force too large an allocation */
	473	return H_RESOURCE;
	474	}
	475
	476	lbuf = alloca(total_len);
	477	p = lbuf;
	478	for (i = 0; i < nbufs; i++) {
ad0ebb91	479	ret = spapr_vio_dma_read(sdev, VLAN_BD_ADDR(bufs[i]),
8d90ad90 DG	480	p, VLAN_BD_LEN(bufs[i]));
	481	if (ret < 0) {
	482	return ret;
	483	}
	484
	485	p += VLAN_BD_LEN(bufs[i]);
	486	}
	487
b356f76d	488	qemu_send_packet(qemu_get_queue(dev->nic), lbuf, total_len);
8d90ad90 DG	489
	490	return H_SUCCESS;
	491	}
	492
b13ce26d	493	static target_ulong h_multicast_ctrl(PowerPCCPU cpu, sPAPREnvironment spapr,
8d90ad90 DG	494	target_ulong opcode, target_ulong *args)
	495	{
	496	target_ulong reg = args[0];
	497	VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg);
	498
	499	if (!dev) {
	500	return H_PARAMETER;
	501	}
	502
	503	return H_SUCCESS;
	504	}
	505
3954d33a	506	static Property spapr_vlan_properties[] = {
ad0ebb91	507	DEFINE_SPAPR_PROPERTIES(VIOsPAPRVLANDevice, sdev),
3954d33a AL	508	DEFINE_NIC_PROPERTIES(VIOsPAPRVLANDevice, nicconf),
	509	DEFINE_PROP_END_OF_LIST(),
	510	};
	511
686fefe4 DG	512	static const VMStateDescription vmstate_spapr_llan = {
	513	.name = "spapr_llan",
	514	.version_id = 1,
	515	.minimum_version_id = 1,
3aff6c2f	516	.fields = (VMStateField[]) {
686fefe4 DG	517	VMSTATE_SPAPR_VIO(sdev, VIOsPAPRVLANDevice),
	518	/* LLAN state */
	519	VMSTATE_BOOL(isopen, VIOsPAPRVLANDevice),
	520	VMSTATE_UINTTL(buf_list, VIOsPAPRVLANDevice),
	521	VMSTATE_UINT32(add_buf_ptr, VIOsPAPRVLANDevice),
	522	VMSTATE_UINT32(use_buf_ptr, VIOsPAPRVLANDevice),
	523	VMSTATE_UINT32(rx_bufs, VIOsPAPRVLANDevice),
	524	VMSTATE_UINTTL(rxq_ptr, VIOsPAPRVLANDevice),
	525
	526	VMSTATE_END_OF_LIST()
	527	},
	528	};
	529
3954d33a AL	530	static void spapr_vlan_class_init(ObjectClass klass, void data)
3954d33a AL	531	{
39bffca2	532	DeviceClass *dc = DEVICE_CLASS(klass);
3954d33a AL	533	VIOsPAPRDeviceClass *k = VIO_SPAPR_DEVICE_CLASS(klass);
3954d33a AL	534
28b07e73	535	k->realize = spapr_vlan_realize;
c17491b6	536	k->reset = spapr_vlan_reset;
3954d33a AL	537	k->devnode = spapr_vlan_devnode;
	538	k->dt_name = "l-lan";
	539	k->dt_type = "network";
	540	k->dt_compatible = "IBM,l-lan";
	541	k->signal_mask = 0x1;
29fdedfe	542	set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
39bffca2	543	dc->props = spapr_vlan_properties;
ad0ebb91	544	k->rtce_window_size = 0x10000000;
686fefe4	545	dc->vmsd = &vmstate_spapr_llan;
3954d33a AL	546	}
3954d33a AL	547
8c43a6f0	548	static const TypeInfo spapr_vlan_info = {
fd506b4f	549	.name = TYPE_VIO_SPAPR_VLAN_DEVICE,
39bffca2 AL	550	.parent = TYPE_VIO_SPAPR_DEVICE,
	551	.instance_size = sizeof(VIOsPAPRVLANDevice),
	552	.class_init = spapr_vlan_class_init,
dfe79cf2	553	.instance_init = spapr_vlan_instance_init,
8d90ad90 DG	554	};
8d90ad90 DG	555
83f7d43a	556	static void spapr_vlan_register_types(void)
8d90ad90	557	{
1fc02533 DG	558	spapr_register_hypercall(H_REGISTER_LOGICAL_LAN, h_register_logical_lan);
	559	spapr_register_hypercall(H_FREE_LOGICAL_LAN, h_free_logical_lan);
	560	spapr_register_hypercall(H_SEND_LOGICAL_LAN, h_send_logical_lan);
	561	spapr_register_hypercall(H_ADD_LOGICAL_LAN_BUFFER,
	562	h_add_logical_lan_buffer);
	563	spapr_register_hypercall(H_MULTICAST_CTRL, h_multicast_ctrl);
39bffca2	564	type_register_static(&spapr_vlan_info);
8d90ad90	565	}
83f7d43a AF	566
83f7d43a AF	567	type_init(spapr_vlan_register_types)