mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-11-05 20:35:44 +00:00
49ab747f66
This patch tackles all files that are compiled once, moving them to subdirectories of hw/. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
733 lines
19 KiB
C
733 lines
19 KiB
C
/*
|
|
* 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 "hw/hw.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_BMCR,
|
|
MII_BMSR,
|
|
MII_PHYIDR1,
|
|
MII_PHYIDR2,
|
|
MII_ANAR,
|
|
MII_ANLPAR,
|
|
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] |= 0x4;
|
|
s->regs[MII_ANLPAR] |= 0x01e1;
|
|
} else {
|
|
s->regs[MII_BMSR] &= ~0x4;
|
|
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] = 0x1000;
|
|
s->regs[MII_BMSR] = 0x7848; /* no ext regs */
|
|
s->regs[MII_PHYIDR1] = 0x2000;
|
|
s->regs[MII_PHYIDR2] = 0x5c90;
|
|
s->regs[MII_ANAR] = 0x01e1;
|
|
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 & 0x8000) {
|
|
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_PHYIDR1] = mii_ro,
|
|
[MII_PHYIDR2] = 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_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
|
|
|
|
typedef struct OpenEthState {
|
|
SysBusDevice dev;
|
|
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) &&
|
|
(rx_desc(s)->len_flags & RXD_E);
|
|
}
|
|
|
|
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;
|
|
|
|
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 void open_eth_cleanup(NetClientState *nc)
|
|
{
|
|
}
|
|
|
|
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,
|
|
.cleanup = open_eth_cleanup,
|
|
.link_status_changed = open_eth_set_link_status,
|
|
};
|
|
|
|
static void open_eth_start_xmit(OpenEthState *s, desc *tx)
|
|
{
|
|
uint8_t buf[65536];
|
|
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 (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_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_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];
|
|
}
|
|
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_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,
|
|
[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 *dev)
|
|
{
|
|
OpenEthState *s = DO_UPCAST(OpenEthState, dev, dev);
|
|
|
|
memory_region_init_io(&s->reg_io, &open_eth_reg_ops, s,
|
|
"open_eth.regs", 0x54);
|
|
sysbus_init_mmio(dev, &s->reg_io);
|
|
|
|
memory_region_init_io(&s->desc_io, &open_eth_desc_ops, s,
|
|
"open_eth.desc", 0x400);
|
|
sysbus_init_mmio(dev, &s->desc_io);
|
|
|
|
sysbus_init_irq(dev, &s->irq);
|
|
|
|
s->nic = qemu_new_nic(&net_open_eth_info, &s->conf,
|
|
object_get_typename(OBJECT(s)), s->dev.qdev.id, s);
|
|
return 0;
|
|
}
|
|
|
|
static void qdev_open_eth_reset(DeviceState *dev)
|
|
{
|
|
OpenEthState *d = DO_UPCAST(OpenEthState, dev.qdev, 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;
|
|
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 = "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)
|