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 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_instance_init(Object *obj)
{
VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(obj);
device_add_bootindex_property(obj, &dev->nicconf.bootindex,
"bootindex", "",
DEVICE(dev), NULL);
}
static int spapr_vlan_init(VIOsPAPRDevice *sdev)
{
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);
return 0;
}
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_add_logical_lan_buffer(PowerPCCPU *cpu,
sPAPRMachineState *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);
target_long ret;
trace_spapr_vlan_h_add_logical_lan_buffer(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) {
return H_RESOURCE;
}
if (dev->compat_flags & SPAPRVLAN_FLAG_RX_BUF_POOLS) {
ret = spapr_vlan_add_rxbuf_to_pool(dev, buf);
} else {
ret = spapr_vlan_add_rxbuf_to_page(dev, buf);
}
if (ret) {
return ret;
}
dev->rx_bufs++;
/*
* Give guest some more time to add additional RX buffers before we
* flush the receive queue, so that e.g. fragmented IP packets can
* be passed to the guest in one go later (instead of passing single
* fragments if there is only one receive buffer available).
*/
timer_mod(dev->rxp_timer, qemu_clock_get_us(QEMU_CLOCK_VIRTUAL) + 500);
return H_SUCCESS;
}
static void spapr_vlan_realize(VIOsPAPRDevice *sdev, Error **errp)
{
VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(sdev);
qemu_macaddr_default_if_unset(&dev->nicconf.macaddr);
memcpy(&dev->perm_mac.a, &dev->nicconf.macaddr.a, sizeof(dev->perm_mac.a));
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);
dev->rxp_timer = timer_new_us(QEMU_CLOCK_VIRTUAL, spapr_vlan_flush_rx_queue,
dev);
}
static void spapr_vlan_instance_init(Object *obj)
{
VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(obj);
int i;
device_add_bootindex_property(obj, &dev->nicconf.bootindex,
"bootindex", "",
DEVICE(dev), NULL);
if (dev->compat_flags & SPAPRVLAN_FLAG_RX_BUF_POOLS) {
for (i = 0; i < RX_MAX_POOLS; i++) {
dev->rx_pool[i] = g_new(RxBufPool, 1);
spapr_vlan_reset_rx_pool(dev->rx_pool[i]);
}
}
}
static void spapr_vlan_instance_finalize(Object *obj)
{
VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(obj);
int i;
if (dev->compat_flags & SPAPRVLAN_FLAG_RX_BUF_POOLS) {
for (i = 0; i < RX_MAX_POOLS; i++) {
g_free(dev->rx_pool[i]);
dev->rx_pool[i] = NULL;
}
}
if (dev->rxp_timer) {
timer_del(dev->rxp_timer);
timer_free(dev->rxp_timer);
}
}
static void spapr_vlan_reset(VIOsPAPRDevice *sdev)
{
VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(sdev);
int i;
dev->buf_list = 0;
dev->rx_bufs = 0;
dev->isopen = 0;
if (dev->compat_flags & SPAPRVLAN_FLAG_RX_BUF_POOLS) {
for (i = 0; i < RX_MAX_POOLS; i++) {
spapr_vlan_reset_rx_pool(dev->rx_pool[i]);
}
}
memcpy(&dev->nicconf.macaddr.a, &dev->perm_mac.a,
sizeof(dev->nicconf.macaddr.a));
qemu_format_nic_info_str(qemu_get_queue(dev->nic), dev->nicconf.macaddr.a);
}
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_change_logical_lan_mac(PowerPCCPU *cpu,
sPAPRMachineState *spapr,
target_ulong opcode,
target_ulong *args)
{
target_ulong reg = args[0];
target_ulong macaddr = args[1];
VIOsPAPRDevice *sdev = spapr_vio_find_by_reg(spapr->vio_bus, reg);
VIOsPAPRVLANDevice *dev = VIO_SPAPR_VLAN_DEVICE(sdev);
int i;
for (i = 0; i < ETH_ALEN; i++) {
dev->nicconf.macaddr.a[ETH_ALEN - i - 1] = macaddr & 0xff;
macaddr >>= 8;
}
qemu_format_nic_info_str(qemu_get_queue(dev->nic), dev->nicconf.macaddr.a);
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_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;
return H_SUCCESS;
}
static target_ulong h_send_logical_lan(PowerPCCPU *cpu,
sPAPRMachineState *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;
trace_spapr_vlan_h_send_logical_lan(reg, continue_token);
if (!sdev) {
return H_PARAMETER;
}
trace_spapr_vlan_h_send_logical_lan_rxbufs(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++) {
trace_spapr_vlan_h_send_logical_lan_buf_desc(bufs[i]);
if (!(bufs[i] & VLAN_BD_VALID)) {
break;
}
total_len += VLAN_BD_LEN(bufs[i]);
}
nbufs = i;
trace_spapr_vlan_h_send_logical_lan_total(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;
}
