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qemu-e2k/hw/net/opencores_eth.c
Zhou Jie ea4d824168 hw/net/opencores_eth: Allocating Large sized arrays to heap 
open_eth_start_xmit has a huge stack usage of 65536 bytes approx.
Moving large arrays to heap to reduce stack usage.

Reduce size of a buffer allocated on stack to 0x600 bytes, which is the
maximal frame length when HUGEN bit is not set in MODER, only allocate
buffer on heap when that is too small. Thus heap is not used in typical
use case.

Signed-off-by: Zhou Jie <zhoujie2011@cn.fujitsu.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2016-05-23 22:10:16 +03:00

774 lines
20 KiB
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/*
* OpenCores Ethernet MAC 10/100 + subset of
* National Semiconductors DP83848C 10/100 PHY
*
* http://opencores.org/svnget,ethmac?file=%2Ftrunk%2F%2Fdoc%2Feth_speci.pdf
* http://cache.national.com/ds/DP/DP83848C.pdf
*
* Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Open Source and Linux Lab nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "qemu/osdep.h"
#include "hw/hw.h"
#include "hw/net/mii.h"
#include "hw/sysbus.h"
#include "net/net.h"
#include "sysemu/sysemu.h"
#include "trace.h"
/* RECSMALL is not used because it breaks tap networking in linux:
* incoming ARP responses are too short
*/
#undef USE_RECSMALL
#define GET_FIELD(v, field) (((v) & (field)) >> (field ## _LBN))
#define GET_REGBIT(s, reg, field) ((s)->regs[reg] & (reg ## _ ## field))
#define GET_REGFIELD(s, reg, field) \
GET_FIELD((s)->regs[reg], reg ## _ ## field)
#define SET_FIELD(v, field, data) \
((v) = (((v) & ~(field)) | (((data) << (field ## _LBN)) & (field))))
#define SET_REGFIELD(s, reg, field, data) \
SET_FIELD((s)->regs[reg], reg ## _ ## field, data)
/* PHY MII registers */
enum {
MII_REG_MAX = 16,
};
typedef struct Mii {
uint16_t regs[MII_REG_MAX];
bool link_ok;
} Mii;
static void mii_set_link(Mii *s, bool link_ok)
{
if (link_ok) {
s->regs[MII_BMSR] |= MII_BMSR_LINK_ST;
s->regs[MII_ANLPAR] |= MII_ANLPAR_TXFD | MII_ANLPAR_TX |
MII_ANLPAR_10FD | MII_ANLPAR_10 | MII_ANLPAR_CSMACD;
} else {
s->regs[MII_BMSR] &= ~MII_BMSR_LINK_ST;
s->regs[MII_ANLPAR] &= 0x01ff;
}
s->link_ok = link_ok;
}
static void mii_reset(Mii *s)
{
memset(s->regs, 0, sizeof(s->regs));
s->regs[MII_BMCR] = MII_BMCR_AUTOEN;
s->regs[MII_BMSR] = MII_BMSR_100TX_FD | MII_BMSR_100TX_HD |
MII_BMSR_10T_FD | MII_BMSR_10T_HD | MII_BMSR_MFPS |
MII_BMSR_AN_COMP | MII_BMSR_AUTONEG;
s->regs[MII_PHYID1] = 0x2000;
s->regs[MII_PHYID2] = 0x5c90;
s->regs[MII_ANAR] = MII_ANAR_TXFD | MII_ANAR_TX |
MII_ANAR_10FD | MII_ANAR_10 | MII_ANAR_CSMACD;
mii_set_link(s, s->link_ok);
}
static void mii_ro(Mii *s, uint16_t v)
{
}
static void mii_write_bmcr(Mii *s, uint16_t v)
{
if (v & MII_BMCR_RESET) {
mii_reset(s);
} else {
s->regs[MII_BMCR] = v;
}
}
static void mii_write_host(Mii *s, unsigned idx, uint16_t v)
{
static void (*reg_write[MII_REG_MAX])(Mii *s, uint16_t v) = {
[MII_BMCR] = mii_write_bmcr,
[MII_BMSR] = mii_ro,
[MII_PHYID1] = mii_ro,
[MII_PHYID2] = mii_ro,
};
if (idx < MII_REG_MAX) {
trace_open_eth_mii_write(idx, v);
if (reg_write[idx]) {
reg_write[idx](s, v);
} else {
s->regs[idx] = v;
}
}
}
static uint16_t mii_read_host(Mii *s, unsigned idx)
{
trace_open_eth_mii_read(idx, s->regs[idx]);
return s->regs[idx];
}
/* OpenCores Ethernet registers */
enum {
MODER,
INT_SOURCE,
INT_MASK,
IPGT,
IPGR1,
IPGR2,
PACKETLEN,
COLLCONF,
TX_BD_NUM,
CTRLMODER,
MIIMODER,
MIICOMMAND,
MIIADDRESS,
MIITX_DATA,
MIIRX_DATA,
MIISTATUS,
MAC_ADDR0,
MAC_ADDR1,
HASH0,
HASH1,
TXCTRL,
REG_MAX,
};
enum {
MODER_RECSMALL = 0x10000,
MODER_PAD = 0x8000,
MODER_HUGEN = 0x4000,
MODER_RST = 0x800,
MODER_LOOPBCK = 0x80,
MODER_PRO = 0x20,
MODER_IAM = 0x10,
MODER_BRO = 0x8,
MODER_TXEN = 0x2,
MODER_RXEN = 0x1,
};
enum {
INT_SOURCE_BUSY = 0x10,
INT_SOURCE_RXB = 0x4,
INT_SOURCE_TXB = 0x1,
};
enum {
PACKETLEN_MINFL = 0xffff0000,
PACKETLEN_MINFL_LBN = 16,
PACKETLEN_MAXFL = 0xffff,
PACKETLEN_MAXFL_LBN = 0,
};
enum {
MIICOMMAND_WCTRLDATA = 0x4,
MIICOMMAND_RSTAT = 0x2,
MIICOMMAND_SCANSTAT = 0x1,
};
enum {
MIIADDRESS_RGAD = 0x1f00,
MIIADDRESS_RGAD_LBN = 8,
MIIADDRESS_FIAD = 0x1f,
MIIADDRESS_FIAD_LBN = 0,
};
enum {
MIITX_DATA_CTRLDATA = 0xffff,
MIITX_DATA_CTRLDATA_LBN = 0,
};
enum {
MIIRX_DATA_PRSD = 0xffff,
MIIRX_DATA_PRSD_LBN = 0,
};
enum {
MIISTATUS_LINKFAIL = 0x1,
MIISTATUS_LINKFAIL_LBN = 0,
};
enum {
MAC_ADDR0_BYTE2 = 0xff000000,
MAC_ADDR0_BYTE2_LBN = 24,
MAC_ADDR0_BYTE3 = 0xff0000,
MAC_ADDR0_BYTE3_LBN = 16,
MAC_ADDR0_BYTE4 = 0xff00,
MAC_ADDR0_BYTE4_LBN = 8,
MAC_ADDR0_BYTE5 = 0xff,
MAC_ADDR0_BYTE5_LBN = 0,
};
enum {
MAC_ADDR1_BYTE0 = 0xff00,
MAC_ADDR1_BYTE0_LBN = 8,
MAC_ADDR1_BYTE1 = 0xff,
MAC_ADDR1_BYTE1_LBN = 0,
};
enum {
TXD_LEN = 0xffff0000,
TXD_LEN_LBN = 16,
TXD_RD = 0x8000,
TXD_IRQ = 0x4000,
TXD_WR = 0x2000,
TXD_PAD = 0x1000,
TXD_CRC = 0x800,
TXD_UR = 0x100,
TXD_RTRY = 0xf0,
TXD_RTRY_LBN = 4,
TXD_RL = 0x8,
TXD_LC = 0x4,
TXD_DF = 0x2,
TXD_CS = 0x1,
};
enum {
RXD_LEN = 0xffff0000,
RXD_LEN_LBN = 16,
RXD_E = 0x8000,
RXD_IRQ = 0x4000,
RXD_WRAP = 0x2000,
RXD_CF = 0x100,
RXD_M = 0x80,
RXD_OR = 0x40,
RXD_IS = 0x20,
RXD_DN = 0x10,
RXD_TL = 0x8,
RXD_SF = 0x4,
RXD_CRC = 0x2,
RXD_LC = 0x1,
};
typedef struct desc {
uint32_t len_flags;
uint32_t buf_ptr;
} desc;
#define DEFAULT_PHY 1
#define TYPE_OPEN_ETH "open_eth"
#define OPEN_ETH(obj) OBJECT_CHECK(OpenEthState, (obj), TYPE_OPEN_ETH)
typedef struct OpenEthState {
SysBusDevice parent_obj;
NICState *nic;
NICConf conf;
MemoryRegion reg_io;
MemoryRegion desc_io;
qemu_irq irq;
Mii mii;
uint32_t regs[REG_MAX];
unsigned tx_desc;
unsigned rx_desc;
desc desc[128];
} OpenEthState;
static desc *rx_desc(OpenEthState *s)
{
return s->desc + s->rx_desc;
}
static desc *tx_desc(OpenEthState *s)
{
return s->desc + s->tx_desc;
}
static void open_eth_update_irq(OpenEthState *s,
uint32_t old, uint32_t new)
{
if (!old != !new) {
trace_open_eth_update_irq(new);
qemu_set_irq(s->irq, new);
}
}
static void open_eth_int_source_write(OpenEthState *s,
uint32_t val)
{
uint32_t old_val = s->regs[INT_SOURCE];
s->regs[INT_SOURCE] = val;
open_eth_update_irq(s, old_val & s->regs[INT_MASK],
s->regs[INT_SOURCE] & s->regs[INT_MASK]);
}
static void open_eth_set_link_status(NetClientState *nc)
{
OpenEthState *s = qemu_get_nic_opaque(nc);
if (GET_REGBIT(s, MIICOMMAND, SCANSTAT)) {
SET_REGFIELD(s, MIISTATUS, LINKFAIL, nc->link_down);
}
mii_set_link(&s->mii, !nc->link_down);
}
static void open_eth_reset(void *opaque)
{
OpenEthState *s = opaque;
memset(s->regs, 0, sizeof(s->regs));
s->regs[MODER] = 0xa000;
s->regs[IPGT] = 0x12;
s->regs[IPGR1] = 0xc;
s->regs[IPGR2] = 0x12;
s->regs[PACKETLEN] = 0x400600;
s->regs[COLLCONF] = 0xf003f;
s->regs[TX_BD_NUM] = 0x40;
s->regs[MIIMODER] = 0x64;
s->tx_desc = 0;
s->rx_desc = 0x40;
mii_reset(&s->mii);
open_eth_set_link_status(qemu_get_queue(s->nic));
}
static int open_eth_can_receive(NetClientState *nc)
{
OpenEthState *s = qemu_get_nic_opaque(nc);
return GET_REGBIT(s, MODER, RXEN) &&
(s->regs[TX_BD_NUM] < 0x80);
}
static ssize_t open_eth_receive(NetClientState *nc,
const uint8_t *buf, size_t size)
{
OpenEthState *s = qemu_get_nic_opaque(nc);
size_t maxfl = GET_REGFIELD(s, PACKETLEN, MAXFL);
size_t minfl = GET_REGFIELD(s, PACKETLEN, MINFL);
size_t fcsl = 4;
bool miss = true;
trace_open_eth_receive((unsigned)size);
if (size >= 6) {
static const uint8_t bcast_addr[] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
if (memcmp(buf, bcast_addr, sizeof(bcast_addr)) == 0) {
miss = GET_REGBIT(s, MODER, BRO);
} else if ((buf[0] & 0x1) || GET_REGBIT(s, MODER, IAM)) {
unsigned mcast_idx = compute_mcast_idx(buf);
miss = !(s->regs[HASH0 + mcast_idx / 32] &
(1 << (mcast_idx % 32)));
trace_open_eth_receive_mcast(
mcast_idx, s->regs[HASH0], s->regs[HASH1]);
} else {
miss = GET_REGFIELD(s, MAC_ADDR1, BYTE0) != buf[0] ||
GET_REGFIELD(s, MAC_ADDR1, BYTE1) != buf[1] ||
GET_REGFIELD(s, MAC_ADDR0, BYTE2) != buf[2] ||
GET_REGFIELD(s, MAC_ADDR0, BYTE3) != buf[3] ||
GET_REGFIELD(s, MAC_ADDR0, BYTE4) != buf[4] ||
GET_REGFIELD(s, MAC_ADDR0, BYTE5) != buf[5];
}
}
if (miss && !GET_REGBIT(s, MODER, PRO)) {
trace_open_eth_receive_reject();
return size;
}
#ifdef USE_RECSMALL
if (GET_REGBIT(s, MODER, RECSMALL) || size >= minfl) {
#else
{
#endif
static const uint8_t zero[64] = {0};
desc *desc = rx_desc(s);
size_t copy_size = GET_REGBIT(s, MODER, HUGEN) ? 65536 : maxfl;
if (!(desc->len_flags & RXD_E)) {
open_eth_int_source_write(s,
s->regs[INT_SOURCE] | INT_SOURCE_BUSY);
return size;
}
desc->len_flags &= ~(RXD_CF | RXD_M | RXD_OR |
RXD_IS | RXD_DN | RXD_TL | RXD_SF | RXD_CRC | RXD_LC);
if (copy_size > size) {
copy_size = size;
} else {
fcsl = 0;
}
if (miss) {
desc->len_flags |= RXD_M;
}
if (GET_REGBIT(s, MODER, HUGEN) && size > maxfl) {
desc->len_flags |= RXD_TL;
}
#ifdef USE_RECSMALL
if (size < minfl) {
desc->len_flags |= RXD_SF;
}
#endif
cpu_physical_memory_write(desc->buf_ptr, buf, copy_size);
if (GET_REGBIT(s, MODER, PAD) && copy_size < minfl) {
if (minfl - copy_size > fcsl) {
fcsl = 0;
} else {
fcsl -= minfl - copy_size;
}
while (copy_size < minfl) {
size_t zero_sz = minfl - copy_size < sizeof(zero) ?
minfl - copy_size : sizeof(zero);
cpu_physical_memory_write(desc->buf_ptr + copy_size,
zero, zero_sz);
copy_size += zero_sz;
}
}
/* There's no FCS in the frames handed to us by the QEMU, zero fill it.
* Don't do it if the frame is cut at the MAXFL or padded with 4 or
* more bytes to the MINFL.
*/
cpu_physical_memory_write(desc->buf_ptr + copy_size, zero, fcsl);
copy_size += fcsl;
SET_FIELD(desc->len_flags, RXD_LEN, copy_size);
if ((desc->len_flags & RXD_WRAP) || s->rx_desc == 0x7f) {
s->rx_desc = s->regs[TX_BD_NUM];
} else {
++s->rx_desc;
}
desc->len_flags &= ~RXD_E;
trace_open_eth_receive_desc(desc->buf_ptr, desc->len_flags);
if (desc->len_flags & RXD_IRQ) {
open_eth_int_source_write(s,
s->regs[INT_SOURCE] | INT_SOURCE_RXB);
}
}
return size;
}
static NetClientInfo net_open_eth_info = {
.type = NET_CLIENT_OPTIONS_KIND_NIC,
.size = sizeof(NICState),
.can_receive = open_eth_can_receive,
.receive = open_eth_receive,
.link_status_changed = open_eth_set_link_status,
};
static void open_eth_start_xmit(OpenEthState *s, desc *tx)
{
uint8_t *buf = NULL;
uint8_t buffer[0x600];
unsigned len = GET_FIELD(tx->len_flags, TXD_LEN);
unsigned tx_len = len;
if ((tx->len_flags & TXD_PAD) &&
tx_len < GET_REGFIELD(s, PACKETLEN, MINFL)) {
tx_len = GET_REGFIELD(s, PACKETLEN, MINFL);
}
if (!GET_REGBIT(s, MODER, HUGEN) &&
tx_len > GET_REGFIELD(s, PACKETLEN, MAXFL)) {
tx_len = GET_REGFIELD(s, PACKETLEN, MAXFL);
}
trace_open_eth_start_xmit(tx->buf_ptr, len, tx_len);
if (tx_len > sizeof(buffer)) {
buf = g_new(uint8_t, tx_len);
} else {
buf = buffer;
}
if (len > tx_len) {
len = tx_len;
}
cpu_physical_memory_read(tx->buf_ptr, buf, len);
if (tx_len > len) {
memset(buf + len, 0, tx_len - len);
}
qemu_send_packet(qemu_get_queue(s->nic), buf, tx_len);
if (tx_len > sizeof(buffer)) {
g_free(buf);
}
if (tx->len_flags & TXD_WR) {
s->tx_desc = 0;
} else {
++s->tx_desc;
if (s->tx_desc >= s->regs[TX_BD_NUM]) {
s->tx_desc = 0;
}
}
tx->len_flags &= ~(TXD_RD | TXD_UR |
TXD_RTRY | TXD_RL | TXD_LC | TXD_DF | TXD_CS);
if (tx->len_flags & TXD_IRQ) {
open_eth_int_source_write(s, s->regs[INT_SOURCE] | INT_SOURCE_TXB);
}
}
static void open_eth_check_start_xmit(OpenEthState *s)
{
desc *tx = tx_desc(s);
if (GET_REGBIT(s, MODER, TXEN) && s->regs[TX_BD_NUM] > 0 &&
(tx->len_flags & TXD_RD) &&
GET_FIELD(tx->len_flags, TXD_LEN) > 4) {
open_eth_start_xmit(s, tx);
}
}
static uint64_t open_eth_reg_read(void *opaque,
hwaddr addr, unsigned int size)
{
static uint32_t (*reg_read[REG_MAX])(OpenEthState *s) = {
};
OpenEthState *s = opaque;
unsigned idx = addr / 4;
uint64_t v = 0;
if (idx < REG_MAX) {
if (reg_read[idx]) {
v = reg_read[idx](s);
} else {
v = s->regs[idx];
}
}
trace_open_eth_reg_read((uint32_t)addr, (uint32_t)v);
return v;
}
static void open_eth_notify_can_receive(OpenEthState *s)
{
NetClientState *nc = qemu_get_queue(s->nic);
if (open_eth_can_receive(nc)) {
qemu_flush_queued_packets(nc);
}
}
static void open_eth_ro(OpenEthState *s, uint32_t val)
{
}
static void open_eth_moder_host_write(OpenEthState *s, uint32_t val)
{
uint32_t set = val & ~s->regs[MODER];
if (set & MODER_RST) {
open_eth_reset(s);
}
s->regs[MODER] = val;
if (set & MODER_RXEN) {
s->rx_desc = s->regs[TX_BD_NUM];
open_eth_notify_can_receive(s);
}
if (set & MODER_TXEN) {
s->tx_desc = 0;
open_eth_check_start_xmit(s);
}
}
static void open_eth_int_source_host_write(OpenEthState *s, uint32_t val)
{
uint32_t old = s->regs[INT_SOURCE];
s->regs[INT_SOURCE] &= ~val;
open_eth_update_irq(s, old & s->regs[INT_MASK],
s->regs[INT_SOURCE] & s->regs[INT_MASK]);
}
static void open_eth_int_mask_host_write(OpenEthState *s, uint32_t val)
{
uint32_t old = s->regs[INT_MASK];
s->regs[INT_MASK] = val;
open_eth_update_irq(s, s->regs[INT_SOURCE] & old,
s->regs[INT_SOURCE] & s->regs[INT_MASK]);
}
static void open_eth_tx_bd_num_host_write(OpenEthState *s, uint32_t val)
{
if (val < 0x80) {
bool enable = s->regs[TX_BD_NUM] == 0x80;
s->regs[TX_BD_NUM] = val;
if (enable) {
open_eth_notify_can_receive(s);
}
}
}
static void open_eth_mii_command_host_write(OpenEthState *s, uint32_t val)
{
unsigned fiad = GET_REGFIELD(s, MIIADDRESS, FIAD);
unsigned rgad = GET_REGFIELD(s, MIIADDRESS, RGAD);
if (val & MIICOMMAND_WCTRLDATA) {
if (fiad == DEFAULT_PHY) {
mii_write_host(&s->mii, rgad,
GET_REGFIELD(s, MIITX_DATA, CTRLDATA));
}
}
if (val & MIICOMMAND_RSTAT) {
if (fiad == DEFAULT_PHY) {
SET_REGFIELD(s, MIIRX_DATA, PRSD,
mii_read_host(&s->mii, rgad));
} else {
s->regs[MIIRX_DATA] = 0xffff;
}
SET_REGFIELD(s, MIISTATUS, LINKFAIL, qemu_get_queue(s->nic)->link_down);
}
}
static void open_eth_mii_tx_host_write(OpenEthState *s, uint32_t val)
{
SET_REGFIELD(s, MIITX_DATA, CTRLDATA, val);
if (GET_REGFIELD(s, MIIADDRESS, FIAD) == DEFAULT_PHY) {
mii_write_host(&s->mii, GET_REGFIELD(s, MIIADDRESS, RGAD),
GET_REGFIELD(s, MIITX_DATA, CTRLDATA));
}
}
static void open_eth_reg_write(void *opaque,
hwaddr addr, uint64_t val, unsigned int size)
{
static void (*reg_write[REG_MAX])(OpenEthState *s, uint32_t val) = {
[MODER] = open_eth_moder_host_write,
[INT_SOURCE] = open_eth_int_source_host_write,
[INT_MASK] = open_eth_int_mask_host_write,
[TX_BD_NUM] = open_eth_tx_bd_num_host_write,
[MIICOMMAND] = open_eth_mii_command_host_write,
[MIITX_DATA] = open_eth_mii_tx_host_write,
[MIISTATUS] = open_eth_ro,
};
OpenEthState *s = opaque;
unsigned idx = addr / 4;
if (idx < REG_MAX) {
trace_open_eth_reg_write((uint32_t)addr, (uint32_t)val);
if (reg_write[idx]) {
reg_write[idx](s, val);
} else {
s->regs[idx] = val;
}
}
}
static uint64_t open_eth_desc_read(void *opaque,
hwaddr addr, unsigned int size)
{
OpenEthState *s = opaque;
uint64_t v = 0;
addr &= 0x3ff;
memcpy(&v, (uint8_t *)s->desc + addr, size);
trace_open_eth_desc_read((uint32_t)addr, (uint32_t)v);
return v;
}
static void open_eth_desc_write(void *opaque,
hwaddr addr, uint64_t val, unsigned int size)
{
OpenEthState *s = opaque;
addr &= 0x3ff;
trace_open_eth_desc_write((uint32_t)addr, (uint32_t)val);
memcpy((uint8_t *)s->desc + addr, &val, size);
open_eth_check_start_xmit(s);
}
static const MemoryRegionOps open_eth_reg_ops = {
.read = open_eth_reg_read,
.write = open_eth_reg_write,
};
static const MemoryRegionOps open_eth_desc_ops = {
.read = open_eth_desc_read,
.write = open_eth_desc_write,
};
static int sysbus_open_eth_init(SysBusDevice *sbd)
{
DeviceState *dev = DEVICE(sbd);
OpenEthState *s = OPEN_ETH(dev);
memory_region_init_io(&s->reg_io, OBJECT(dev), &open_eth_reg_ops, s,
"open_eth.regs", 0x54);
sysbus_init_mmio(sbd, &s->reg_io);
memory_region_init_io(&s->desc_io, OBJECT(dev), &open_eth_desc_ops, s,
"open_eth.desc", 0x400);
sysbus_init_mmio(sbd, &s->desc_io);
sysbus_init_irq(sbd, &s->irq);
s->nic = qemu_new_nic(&net_open_eth_info, &s->conf,
object_get_typename(OBJECT(s)), dev->id, s);
return 0;
}
static void qdev_open_eth_reset(DeviceState *dev)
{
OpenEthState *d = OPEN_ETH(dev);
open_eth_reset(d);
}
static Property open_eth_properties[] = {
DEFINE_NIC_PROPERTIES(OpenEthState, conf),
DEFINE_PROP_END_OF_LIST(),
};
static void open_eth_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
k->init = sysbus_open_eth_init;
set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
dc->desc = "Opencores 10/100 Mbit Ethernet";
dc->reset = qdev_open_eth_reset;
dc->props = open_eth_properties;
}
static const TypeInfo open_eth_info = {
.name = TYPE_OPEN_ETH,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(OpenEthState),
.class_init = open_eth_class_init,
};
static void open_eth_register_types(void)
{
type_register_static(&open_eth_info);
}
type_init(open_eth_register_types)
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