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rocker.c
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rocker.c
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/*
* QEMU rocker switch emulation - PCI device
*
* Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
* Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*/
#include "qemu/osdep.h"
#include "hw/hw.h"
#include "hw/pci/pci.h"
#include "hw/pci/msix.h"
#include "net/net.h"
#include "net/eth.h"
#include "qapi/error.h"
#include "qapi/qapi-commands-rocker.h"
#include "qemu/iov.h"
#include "qemu/bitops.h"
#include "rocker.h"
#include "rocker_hw.h"
#include "rocker_fp.h"
#include "rocker_desc.h"
#include "rocker_tlv.h"
#include "rocker_world.h"
#include "rocker_of_dpa.h"
struct rocker {
/* private */
PCIDevice parent_obj;
/* public */
MemoryRegion mmio;
MemoryRegion msix_bar;
/* switch configuration */
char *name; /* switch name */
char *world_name; /* world name */
uint32_t fp_ports; /* front-panel port count */
NICPeers *fp_ports_peers;
MACAddr fp_start_macaddr; /* front-panel port 0 mac addr */
uint64_t switch_id; /* switch id */
/* front-panel ports */
FpPort *fp_port[ROCKER_FP_PORTS_MAX];
/* register backings */
uint32_t test_reg;
uint64_t test_reg64;
dma_addr_t test_dma_addr;
uint32_t test_dma_size;
uint64_t lower32; /* lower 32-bit val in 2-part 64-bit access */
/* desc rings */
DescRing **rings;
/* switch worlds */
World *worlds[ROCKER_WORLD_TYPE_MAX];
World *world_dflt;
QLIST_ENTRY(rocker) next;
};
#define TYPE_ROCKER "rocker"
#define ROCKER(obj) \
OBJECT_CHECK(Rocker, (obj), TYPE_ROCKER)
static QLIST_HEAD(, rocker) rockers;
Rocker *rocker_find(const char *name)
{
Rocker *r;
QLIST_FOREACH(r, &rockers, next)
if (strcmp(r->name, name) == 0) {
return r;
}
return NULL;
}
World *rocker_get_world(Rocker *r, enum rocker_world_type type)
{
if (type < ROCKER_WORLD_TYPE_MAX) {
return r->worlds[type];
}
return NULL;
}
RockerSwitch *qmp_query_rocker(const char *name, Error **errp)
{
RockerSwitch *rocker;
Rocker *r;
r = rocker_find(name);
if (!r) {
error_setg(errp, "rocker %s not found", name);
return NULL;
}
rocker = g_new0(RockerSwitch, 1);
rocker->name = g_strdup(r->name);
rocker->id = r->switch_id;
rocker->ports = r->fp_ports;
return rocker;
}
RockerPortList *qmp_query_rocker_ports(const char *name, Error **errp)
{
RockerPortList *list = NULL;
Rocker *r;
int i;
r = rocker_find(name);
if (!r) {
error_setg(errp, "rocker %s not found", name);
return NULL;
}
for (i = r->fp_ports - 1; i >= 0; i--) {
RockerPortList *info = g_malloc0(sizeof(*info));
info->value = g_malloc0(sizeof(*info->value));
struct fp_port *port = r->fp_port[i];
fp_port_get_info(port, info);
info->next = list;
list = info;
}
return list;
}
uint32_t rocker_fp_ports(Rocker *r)
{
return r->fp_ports;
}
static uint32_t rocker_get_pport_by_tx_ring(Rocker *r,
DescRing *ring)
{
return (desc_ring_index(ring) - 2) / 2 + 1;
}
static int tx_consume(Rocker *r, DescInfo *info)
{
PCIDevice *dev = PCI_DEVICE(r);
char *buf = desc_get_buf(info, true);
RockerTlv *tlv_frag;
RockerTlv *tlvs[ROCKER_TLV_TX_MAX + 1];
struct iovec iov[ROCKER_TX_FRAGS_MAX] = { { 0, }, };
uint32_t pport;
uint32_t port;
uint16_t tx_offload = ROCKER_TX_OFFLOAD_NONE;
uint16_t tx_l3_csum_off = 0;
uint16_t tx_tso_mss = 0;
uint16_t tx_tso_hdr_len = 0;
int iovcnt = 0;
int err = ROCKER_OK;
int rem;
int i;
if (!buf) {
return -ROCKER_ENXIO;
}
rocker_tlv_parse(tlvs, ROCKER_TLV_TX_MAX, buf, desc_tlv_size(info));
if (!tlvs[ROCKER_TLV_TX_FRAGS]) {
return -ROCKER_EINVAL;
}
pport = rocker_get_pport_by_tx_ring(r, desc_get_ring(info));
if (!fp_port_from_pport(pport, &port)) {
return -ROCKER_EINVAL;
}
if (tlvs[ROCKER_TLV_TX_OFFLOAD]) {
tx_offload = rocker_tlv_get_u8(tlvs[ROCKER_TLV_TX_OFFLOAD]);
}
switch (tx_offload) {
case ROCKER_TX_OFFLOAD_L3_CSUM:
if (!tlvs[ROCKER_TLV_TX_L3_CSUM_OFF]) {
return -ROCKER_EINVAL;
}
break;
case ROCKER_TX_OFFLOAD_TSO:
if (!tlvs[ROCKER_TLV_TX_TSO_MSS] ||
!tlvs[ROCKER_TLV_TX_TSO_HDR_LEN]) {
return -ROCKER_EINVAL;
}
break;
}
if (tlvs[ROCKER_TLV_TX_L3_CSUM_OFF]) {
tx_l3_csum_off = rocker_tlv_get_le16(tlvs[ROCKER_TLV_TX_L3_CSUM_OFF]);
}
if (tlvs[ROCKER_TLV_TX_TSO_MSS]) {
tx_tso_mss = rocker_tlv_get_le16(tlvs[ROCKER_TLV_TX_TSO_MSS]);
}
if (tlvs[ROCKER_TLV_TX_TSO_HDR_LEN]) {
tx_tso_hdr_len = rocker_tlv_get_le16(tlvs[ROCKER_TLV_TX_TSO_HDR_LEN]);
}
rocker_tlv_for_each_nested(tlv_frag, tlvs[ROCKER_TLV_TX_FRAGS], rem) {
hwaddr frag_addr;
uint16_t frag_len;
if (rocker_tlv_type(tlv_frag) != ROCKER_TLV_TX_FRAG) {
err = -ROCKER_EINVAL;
goto err_bad_attr;
}
rocker_tlv_parse_nested(tlvs, ROCKER_TLV_TX_FRAG_ATTR_MAX, tlv_frag);
if (!tlvs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
!tlvs[ROCKER_TLV_TX_FRAG_ATTR_LEN]) {
err = -ROCKER_EINVAL;
goto err_bad_attr;
}
frag_addr = rocker_tlv_get_le64(tlvs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
frag_len = rocker_tlv_get_le16(tlvs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
if (iovcnt >= ROCKER_TX_FRAGS_MAX) {
goto err_too_many_frags;
}
iov[iovcnt].iov_len = frag_len;
iov[iovcnt].iov_base = g_malloc(frag_len);
pci_dma_read(dev, frag_addr, iov[iovcnt].iov_base,
iov[iovcnt].iov_len);
iovcnt++;
}
if (iovcnt) {
/* XXX perform Tx offloads */
/* XXX silence compiler for now */
tx_l3_csum_off += tx_tso_mss = tx_tso_hdr_len = 0;
}
err = fp_port_eg(r->fp_port[port], iov, iovcnt);
err_too_many_frags:
err_bad_attr:
for (i = 0; i < ROCKER_TX_FRAGS_MAX; i++) {
g_free(iov[i].iov_base);
}
return err;
}
static int cmd_get_port_settings(Rocker *r,
DescInfo *info, char *buf,
RockerTlv *cmd_info_tlv)
{
RockerTlv *tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
RockerTlv *nest;
FpPort *fp_port;
uint32_t pport;
uint32_t port;
uint32_t speed;
uint8_t duplex;
uint8_t autoneg;
uint8_t learning;
char *phys_name;
MACAddr macaddr;
enum rocker_world_type mode;
size_t tlv_size;
int pos;
int err;
rocker_tlv_parse_nested(tlvs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
cmd_info_tlv);
if (!tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_PPORT]) {
return -ROCKER_EINVAL;
}
pport = rocker_tlv_get_le32(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_PPORT]);
if (!fp_port_from_pport(pport, &port)) {
return -ROCKER_EINVAL;
}
fp_port = r->fp_port[port];
err = fp_port_get_settings(fp_port, &speed, &duplex, &autoneg);
if (err) {
return err;
}
fp_port_get_macaddr(fp_port, &macaddr);
mode = world_type(fp_port_get_world(fp_port));
learning = fp_port_get_learning(fp_port);
phys_name = fp_port_get_name(fp_port);
tlv_size = rocker_tlv_total_size(0) + /* nest */
rocker_tlv_total_size(sizeof(uint32_t)) + /* pport */
rocker_tlv_total_size(sizeof(uint32_t)) + /* speed */
rocker_tlv_total_size(sizeof(uint8_t)) + /* duplex */
rocker_tlv_total_size(sizeof(uint8_t)) + /* autoneg */
rocker_tlv_total_size(sizeof(macaddr.a)) + /* macaddr */
rocker_tlv_total_size(sizeof(uint8_t)) + /* mode */
rocker_tlv_total_size(sizeof(uint8_t)) + /* learning */
rocker_tlv_total_size(strlen(phys_name));
if (tlv_size > desc_buf_size(info)) {
return -ROCKER_EMSGSIZE;
}
pos = 0;
nest = rocker_tlv_nest_start(buf, &pos, ROCKER_TLV_CMD_INFO);
rocker_tlv_put_le32(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_PPORT, pport);
rocker_tlv_put_le32(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED, speed);
rocker_tlv_put_u8(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX, duplex);
rocker_tlv_put_u8(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG, autoneg);
rocker_tlv_put(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
sizeof(macaddr.a), macaddr.a);
rocker_tlv_put_u8(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_MODE, mode);
rocker_tlv_put_u8(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
learning);
rocker_tlv_put(buf, &pos, ROCKER_TLV_CMD_PORT_SETTINGS_PHYS_NAME,
strlen(phys_name), phys_name);
rocker_tlv_nest_end(buf, &pos, nest);
return desc_set_buf(info, tlv_size);
}
static int cmd_set_port_settings(Rocker *r,
RockerTlv *cmd_info_tlv)
{
RockerTlv *tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
FpPort *fp_port;
uint32_t pport;
uint32_t port;
uint32_t speed;
uint8_t duplex;
uint8_t autoneg;
uint8_t learning;
MACAddr macaddr;
enum rocker_world_type mode;
int err;
rocker_tlv_parse_nested(tlvs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
cmd_info_tlv);
if (!tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_PPORT]) {
return -ROCKER_EINVAL;
}
pport = rocker_tlv_get_le32(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_PPORT]);
if (!fp_port_from_pport(pport, &port)) {
return -ROCKER_EINVAL;
}
fp_port = r->fp_port[port];
if (tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] &&
tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] &&
tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]) {
speed = rocker_tlv_get_le32(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
duplex = rocker_tlv_get_u8(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
autoneg = rocker_tlv_get_u8(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
err = fp_port_set_settings(fp_port, speed, duplex, autoneg);
if (err) {
return err;
}
}
if (tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR]) {
if (rocker_tlv_len(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR]) !=
sizeof(macaddr.a)) {
return -ROCKER_EINVAL;
}
memcpy(macaddr.a,
rocker_tlv_data(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR]),
sizeof(macaddr.a));
fp_port_set_macaddr(fp_port, &macaddr);
}
if (tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]) {
mode = rocker_tlv_get_u8(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]);
if (mode >= ROCKER_WORLD_TYPE_MAX) {
return -ROCKER_EINVAL;
}
/* We don't support world change. */
if (!fp_port_check_world(fp_port, r->worlds[mode])) {
return -ROCKER_EINVAL;
}
}
if (tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING]) {
learning =
rocker_tlv_get_u8(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING]);
fp_port_set_learning(fp_port, learning);
}
return ROCKER_OK;
}
static int cmd_consume(Rocker *r, DescInfo *info)
{
char *buf = desc_get_buf(info, false);
RockerTlv *tlvs[ROCKER_TLV_CMD_MAX + 1];
RockerTlv *info_tlv;
World *world;
uint16_t cmd;
int err;
if (!buf) {
return -ROCKER_ENXIO;
}
rocker_tlv_parse(tlvs, ROCKER_TLV_CMD_MAX, buf, desc_tlv_size(info));
if (!tlvs[ROCKER_TLV_CMD_TYPE] || !tlvs[ROCKER_TLV_CMD_INFO]) {
return -ROCKER_EINVAL;
}
cmd = rocker_tlv_get_le16(tlvs[ROCKER_TLV_CMD_TYPE]);
info_tlv = tlvs[ROCKER_TLV_CMD_INFO];
/* This might be reworked to something like this:
* Every world will have an array of command handlers from
* ROCKER_TLV_CMD_TYPE_UNSPEC to ROCKER_TLV_CMD_TYPE_MAX. There is
* up to each world to implement whatever command it want.
* It can reference "generic" commands as cmd_set_port_settings or
* cmd_get_port_settings
*/
switch (cmd) {
case ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD:
case ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD:
case ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL:
case ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_GET_STATS:
case ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD:
case ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD:
case ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL:
case ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_GET_STATS:
world = r->worlds[ROCKER_WORLD_TYPE_OF_DPA];
err = world_do_cmd(world, info, buf, cmd, info_tlv);
break;
case ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS:
err = cmd_get_port_settings(r, info, buf, info_tlv);
break;
case ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS:
err = cmd_set_port_settings(r, info_tlv);
break;
default:
err = -ROCKER_EINVAL;
break;
}
return err;
}
static void rocker_msix_irq(Rocker *r, unsigned vector)
{
PCIDevice *dev = PCI_DEVICE(r);
DPRINTF("MSI-X notify request for vector %d\n", vector);
if (vector >= ROCKER_MSIX_VEC_COUNT(r->fp_ports)) {
DPRINTF("incorrect vector %d\n", vector);
return;
}
msix_notify(dev, vector);
}
int rocker_event_link_changed(Rocker *r, uint32_t pport, bool link_up)
{
DescRing *ring = r->rings[ROCKER_RING_EVENT];
DescInfo *info = desc_ring_fetch_desc(ring);
RockerTlv *nest;
char *buf;
size_t tlv_size;
int pos;
int err;
if (!info) {
return -ROCKER_ENOBUFS;
}
tlv_size = rocker_tlv_total_size(sizeof(uint16_t)) + /* event type */
rocker_tlv_total_size(0) + /* nest */
rocker_tlv_total_size(sizeof(uint32_t)) + /* pport */
rocker_tlv_total_size(sizeof(uint8_t)); /* link up */
if (tlv_size > desc_buf_size(info)) {
err = -ROCKER_EMSGSIZE;
goto err_too_big;
}
buf = desc_get_buf(info, false);
if (!buf) {
err = -ROCKER_ENOMEM;
goto err_no_mem;
}
pos = 0;
rocker_tlv_put_le32(buf, &pos, ROCKER_TLV_EVENT_TYPE,
ROCKER_TLV_EVENT_TYPE_LINK_CHANGED);
nest = rocker_tlv_nest_start(buf, &pos, ROCKER_TLV_EVENT_INFO);
rocker_tlv_put_le32(buf, &pos, ROCKER_TLV_EVENT_LINK_CHANGED_PPORT, pport);
rocker_tlv_put_u8(buf, &pos, ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP,
link_up ? 1 : 0);
rocker_tlv_nest_end(buf, &pos, nest);
err = desc_set_buf(info, tlv_size);
err_too_big:
err_no_mem:
if (desc_ring_post_desc(ring, err)) {
rocker_msix_irq(r, ROCKER_MSIX_VEC_EVENT);
}
return err;
}
int rocker_event_mac_vlan_seen(Rocker *r, uint32_t pport, uint8_t *addr,
uint16_t vlan_id)
{
DescRing *ring = r->rings[ROCKER_RING_EVENT];
DescInfo *info;
FpPort *fp_port;
uint32_t port;
RockerTlv *nest;
char *buf;
size_t tlv_size;
int pos;
int err;
if (!fp_port_from_pport(pport, &port)) {
return -ROCKER_EINVAL;
}
fp_port = r->fp_port[port];
if (!fp_port_get_learning(fp_port)) {
return ROCKER_OK;
}
info = desc_ring_fetch_desc(ring);
if (!info) {
return -ROCKER_ENOBUFS;
}
tlv_size = rocker_tlv_total_size(sizeof(uint16_t)) + /* event type */
rocker_tlv_total_size(0) + /* nest */
rocker_tlv_total_size(sizeof(uint32_t)) + /* pport */
rocker_tlv_total_size(ETH_ALEN) + /* mac addr */
rocker_tlv_total_size(sizeof(uint16_t)); /* vlan_id */
if (tlv_size > desc_buf_size(info)) {
err = -ROCKER_EMSGSIZE;
goto err_too_big;
}
buf = desc_get_buf(info, false);
if (!buf) {
err = -ROCKER_ENOMEM;
goto err_no_mem;
}
pos = 0;
rocker_tlv_put_le32(buf, &pos, ROCKER_TLV_EVENT_TYPE,
ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN);
nest = rocker_tlv_nest_start(buf, &pos, ROCKER_TLV_EVENT_INFO);
rocker_tlv_put_le32(buf, &pos, ROCKER_TLV_EVENT_MAC_VLAN_PPORT, pport);
rocker_tlv_put(buf, &pos, ROCKER_TLV_EVENT_MAC_VLAN_MAC, ETH_ALEN, addr);
rocker_tlv_put_u16(buf, &pos, ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID, vlan_id);
rocker_tlv_nest_end(buf, &pos, nest);
err = desc_set_buf(info, tlv_size);
err_too_big:
err_no_mem:
if (desc_ring_post_desc(ring, err)) {
rocker_msix_irq(r, ROCKER_MSIX_VEC_EVENT);
}
return err;
}
static DescRing *rocker_get_rx_ring_by_pport(Rocker *r,
uint32_t pport)
{
return r->rings[(pport - 1) * 2 + 3];
}
int rx_produce(World *world, uint32_t pport,
const struct iovec *iov, int iovcnt, uint8_t copy_to_cpu)
{
Rocker *r = world_rocker(world);
PCIDevice *dev = (PCIDevice *)r;
DescRing *ring = rocker_get_rx_ring_by_pport(r, pport);
DescInfo *info = desc_ring_fetch_desc(ring);
char *data;
size_t data_size = iov_size(iov, iovcnt);
char *buf;
uint16_t rx_flags = 0;
uint16_t rx_csum = 0;
size_t tlv_size;
RockerTlv *tlvs[ROCKER_TLV_RX_MAX + 1];
hwaddr frag_addr;
uint16_t frag_max_len;
int pos;
int err;
if (!info) {
return -ROCKER_ENOBUFS;
}
buf = desc_get_buf(info, false);
if (!buf) {
err = -ROCKER_ENXIO;
goto out;
}
rocker_tlv_parse(tlvs, ROCKER_TLV_RX_MAX, buf, desc_tlv_size(info));
if (!tlvs[ROCKER_TLV_RX_FRAG_ADDR] ||
!tlvs[ROCKER_TLV_RX_FRAG_MAX_LEN]) {
err = -ROCKER_EINVAL;
goto out;
}
frag_addr = rocker_tlv_get_le64(tlvs[ROCKER_TLV_RX_FRAG_ADDR]);
frag_max_len = rocker_tlv_get_le16(tlvs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
if (data_size > frag_max_len) {
err = -ROCKER_EMSGSIZE;
goto out;
}
if (copy_to_cpu) {
rx_flags |= ROCKER_RX_FLAGS_FWD_OFFLOAD;
}
/* XXX calc rx flags/csum */
tlv_size = rocker_tlv_total_size(sizeof(uint16_t)) + /* flags */
rocker_tlv_total_size(sizeof(uint16_t)) + /* scum */
rocker_tlv_total_size(sizeof(uint64_t)) + /* frag addr */
rocker_tlv_total_size(sizeof(uint16_t)) + /* frag max len */
rocker_tlv_total_size(sizeof(uint16_t)); /* frag len */
if (tlv_size > desc_buf_size(info)) {
err = -ROCKER_EMSGSIZE;
goto out;
}
/* TODO:
* iov dma write can be optimized in similar way e1000 does it in
* e1000_receive_iov. But maybe if would make sense to introduce
* generic helper iov_dma_write.
*/
data = g_malloc(data_size);
iov_to_buf(iov, iovcnt, 0, data, data_size);
pci_dma_write(dev, frag_addr, data, data_size);
g_free(data);
pos = 0;
rocker_tlv_put_le16(buf, &pos, ROCKER_TLV_RX_FLAGS, rx_flags);
rocker_tlv_put_le16(buf, &pos, ROCKER_TLV_RX_CSUM, rx_csum);
rocker_tlv_put_le64(buf, &pos, ROCKER_TLV_RX_FRAG_ADDR, frag_addr);
rocker_tlv_put_le16(buf, &pos, ROCKER_TLV_RX_FRAG_MAX_LEN, frag_max_len);
rocker_tlv_put_le16(buf, &pos, ROCKER_TLV_RX_FRAG_LEN, data_size);
err = desc_set_buf(info, tlv_size);
out:
if (desc_ring_post_desc(ring, err)) {
rocker_msix_irq(r, ROCKER_MSIX_VEC_RX(pport - 1));
}
return err;
}
int rocker_port_eg(Rocker *r, uint32_t pport,
const struct iovec *iov, int iovcnt)
{
FpPort *fp_port;
uint32_t port;
if (!fp_port_from_pport(pport, &port)) {
return -ROCKER_EINVAL;
}
fp_port = r->fp_port[port];
return fp_port_eg(fp_port, iov, iovcnt);
}
static void rocker_test_dma_ctrl(Rocker *r, uint32_t val)
{
PCIDevice *dev = PCI_DEVICE(r);
char *buf;
int i;
buf = g_malloc(r->test_dma_size);
switch (val) {
case ROCKER_TEST_DMA_CTRL_CLEAR:
memset(buf, 0, r->test_dma_size);
break;
case ROCKER_TEST_DMA_CTRL_FILL:
memset(buf, 0x96, r->test_dma_size);
break;
case ROCKER_TEST_DMA_CTRL_INVERT:
pci_dma_read(dev, r->test_dma_addr, buf, r->test_dma_size);
for (i = 0; i < r->test_dma_size; i++) {
buf[i] = ~buf[i];
}
break;
default:
DPRINTF("not test dma control val=0x%08x\n", val);
goto err_out;
}
pci_dma_write(dev, r->test_dma_addr, buf, r->test_dma_size);
rocker_msix_irq(r, ROCKER_MSIX_VEC_TEST);
err_out:
g_free(buf);
}
static void rocker_reset(DeviceState *dev);
static void rocker_control(Rocker *r, uint32_t val)
{
if (val & ROCKER_CONTROL_RESET) {
rocker_reset(DEVICE(r));
}
}
static int rocker_pci_ring_count(Rocker *r)
{
/* There are:
* - command ring
* - event ring
* - tx and rx ring per each port
*/
return 2 + (2 * r->fp_ports);
}
static bool rocker_addr_is_desc_reg(Rocker *r, hwaddr addr)
{
hwaddr start = ROCKER_DMA_DESC_BASE;
hwaddr end = start + (ROCKER_DMA_DESC_SIZE * rocker_pci_ring_count(r));
return addr >= start && addr < end;
}
static void rocker_port_phys_enable_write(Rocker *r, uint64_t new)
{
int i;
bool old_enabled;
bool new_enabled;
FpPort *fp_port;
for (i = 0; i < r->fp_ports; i++) {
fp_port = r->fp_port[i];
old_enabled = fp_port_enabled(fp_port);
new_enabled = (new >> (i + 1)) & 0x1;
if (new_enabled == old_enabled) {
continue;
}
if (new_enabled) {
fp_port_enable(r->fp_port[i]);
} else {
fp_port_disable(r->fp_port[i]);
}
}
}
static void rocker_io_writel(void *opaque, hwaddr addr, uint32_t val)
{
Rocker *r = opaque;
if (rocker_addr_is_desc_reg(r, addr)) {
unsigned index = ROCKER_RING_INDEX(addr);
unsigned offset = addr & ROCKER_DMA_DESC_MASK;
switch (offset) {
case ROCKER_DMA_DESC_ADDR_OFFSET:
r->lower32 = (uint64_t)val;
break;
case ROCKER_DMA_DESC_ADDR_OFFSET + 4:
desc_ring_set_base_addr(r->rings[index],
((uint64_t)val) << 32 | r->lower32);
r->lower32 = 0;
break;
case ROCKER_DMA_DESC_SIZE_OFFSET:
desc_ring_set_size(r->rings[index], val);
break;
case ROCKER_DMA_DESC_HEAD_OFFSET:
if (desc_ring_set_head(r->rings[index], val)) {
rocker_msix_irq(r, desc_ring_get_msix_vector(r->rings[index]));
}
break;
case ROCKER_DMA_DESC_CTRL_OFFSET:
desc_ring_set_ctrl(r->rings[index], val);
break;
case ROCKER_DMA_DESC_CREDITS_OFFSET:
if (desc_ring_ret_credits(r->rings[index], val)) {
rocker_msix_irq(r, desc_ring_get_msix_vector(r->rings[index]));
}
break;
default:
DPRINTF("not implemented dma reg write(l) addr=0x" TARGET_FMT_plx
" val=0x%08x (ring %d, addr=0x%02x)\n",
addr, val, index, offset);
break;
}
return;
}
switch (addr) {
case ROCKER_TEST_REG:
r->test_reg = val;
break;
case ROCKER_TEST_REG64:
case ROCKER_TEST_DMA_ADDR:
case ROCKER_PORT_PHYS_ENABLE:
r->lower32 = (uint64_t)val;
break;
case ROCKER_TEST_REG64 + 4:
r->test_reg64 = ((uint64_t)val) << 32 | r->lower32;
r->lower32 = 0;
break;
case ROCKER_TEST_IRQ:
rocker_msix_irq(r, val);
break;
case ROCKER_TEST_DMA_SIZE:
r->test_dma_size = val & 0xFFFF;
break;
case ROCKER_TEST_DMA_ADDR + 4:
r->test_dma_addr = ((uint64_t)val) << 32 | r->lower32;
r->lower32 = 0;
break;
case ROCKER_TEST_DMA_CTRL:
rocker_test_dma_ctrl(r, val);
break;
case ROCKER_CONTROL:
rocker_control(r, val);
break;
case ROCKER_PORT_PHYS_ENABLE + 4:
rocker_port_phys_enable_write(r, ((uint64_t)val) << 32 | r->lower32);
r->lower32 = 0;
break;
default:
DPRINTF("not implemented write(l) addr=0x" TARGET_FMT_plx
" val=0x%08x\n", addr, val);
break;
}
}
static void rocker_io_writeq(void *opaque, hwaddr addr, uint64_t val)
{
Rocker *r = opaque;
if (rocker_addr_is_desc_reg(r, addr)) {
unsigned index = ROCKER_RING_INDEX(addr);
unsigned offset = addr & ROCKER_DMA_DESC_MASK;
switch (offset) {
case ROCKER_DMA_DESC_ADDR_OFFSET:
desc_ring_set_base_addr(r->rings[index], val);
break;
default:
DPRINTF("not implemented dma reg write(q) addr=0x" TARGET_FMT_plx
" val=0x" TARGET_FMT_plx " (ring %d, offset=0x%02x)\n",
addr, val, index, offset);
break;
}
return;
}
switch (addr) {
case ROCKER_TEST_REG64:
r->test_reg64 = val;
break;
case ROCKER_TEST_DMA_ADDR:
r->test_dma_addr = val;
break;
case ROCKER_PORT_PHYS_ENABLE:
rocker_port_phys_enable_write(r, val);
break;
default:
DPRINTF("not implemented write(q) addr=0x" TARGET_FMT_plx
" val=0x" TARGET_FMT_plx "\n", addr, val);
break;
}
}
#ifdef DEBUG_ROCKER
#define regname(reg) case (reg): return #reg
static const char *rocker_reg_name(void *opaque, hwaddr addr)
{
Rocker *r = opaque;
if (rocker_addr_is_desc_reg(r, addr)) {
unsigned index = ROCKER_RING_INDEX(addr);
unsigned offset = addr & ROCKER_DMA_DESC_MASK;
static char buf[100];
char ring_name[10];
switch (index) {
case 0:
sprintf(ring_name, "cmd");
break;
case 1:
sprintf(ring_name, "event");
break;
default:
sprintf(ring_name, "%s-%d", index % 2 ? "rx" : "tx",
(index - 2) / 2);
}
switch (offset) {
case ROCKER_DMA_DESC_ADDR_OFFSET:
sprintf(buf, "Ring[%s] ADDR", ring_name);
return buf;
case ROCKER_DMA_DESC_ADDR_OFFSET+4:
sprintf(buf, "Ring[%s] ADDR+4", ring_name);
return buf;
case ROCKER_DMA_DESC_SIZE_OFFSET:
sprintf(buf, "Ring[%s] SIZE", ring_name);
return buf;
case ROCKER_DMA_DESC_HEAD_OFFSET:
sprintf(buf, "Ring[%s] HEAD", ring_name);
return buf;
case ROCKER_DMA_DESC_TAIL_OFFSET:
sprintf(buf, "Ring[%s] TAIL", ring_name);
return buf;
case ROCKER_DMA_DESC_CTRL_OFFSET:
sprintf(buf, "Ring[%s] CTRL", ring_name);
return buf;
case ROCKER_DMA_DESC_CREDITS_OFFSET:
sprintf(buf, "Ring[%s] CREDITS", ring_name);
return buf;
default:
sprintf(buf, "Ring[%s] ???", ring_name);
return buf;
}
} else {
switch (addr) {
regname(ROCKER_BOGUS_REG0);
regname(ROCKER_BOGUS_REG1);
regname(ROCKER_BOGUS_REG2);
regname(ROCKER_BOGUS_REG3);
regname(ROCKER_TEST_REG);
regname(ROCKER_TEST_REG64);
regname(ROCKER_TEST_REG64+4);
regname(ROCKER_TEST_IRQ);
regname(ROCKER_TEST_DMA_ADDR);
regname(ROCKER_TEST_DMA_ADDR+4);
regname(ROCKER_TEST_DMA_SIZE);
regname(ROCKER_TEST_DMA_CTRL);
regname(ROCKER_CONTROL);
regname(ROCKER_PORT_PHYS_COUNT);
regname(ROCKER_PORT_PHYS_LINK_STATUS);
regname(ROCKER_PORT_PHYS_LINK_STATUS+4);
regname(ROCKER_PORT_PHYS_ENABLE);
regname(ROCKER_PORT_PHYS_ENABLE+4);
regname(ROCKER_SWITCH_ID);
regname(ROCKER_SWITCH_ID+4);
}
}
return "???";
}
#else
static const char *rocker_reg_name(void *opaque, hwaddr addr)
{
return NULL;
}
#endif
static void rocker_mmio_write(void *opaque, hwaddr addr, uint64_t val,
unsigned size)
{
DPRINTF("Write %s addr " TARGET_FMT_plx
", size %u, val " TARGET_FMT_plx "\n",
rocker_reg_name(opaque, addr), addr, size, val);
switch (size) {
case 4: