* [Qemu-devel] [PATCH 1/2] hw: add OpenCores 10/100 Mbps Ethernet controller
2011-10-10 2:27 [Qemu-devel] [PATCH 0/2] target-xtensa: add Avnet lx60/lx110/lx200 board and OpenCores Ethernet MAC Max Filippov
@ 2011-10-10 2:27 ` Max Filippov
2011-10-10 2:27 ` [Qemu-devel] [PATCH 2/2] target-xtensa: add Avnet LX60/LX110/LX200 boards Max Filippov
2011-10-15 21:31 ` [Qemu-devel] [PATCH 0/2] target-xtensa: add Avnet lx60/lx110/lx200 board and OpenCores Ethernet MAC Blue Swirl
2 siblings, 0 replies; 6+ messages in thread
From: Max Filippov @ 2011-10-10 2:27 UTC (permalink / raw)
To: qemu-devel; +Cc: jcmvbkbc, linux-xtensa
This is OpenCores Ethernet MAC + subset of National Semiconductors
DP83838C PHY.
OpenCores Ethernet MAC project: http://opencores.org/project,ethmac
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---
Makefile.objs | 1 +
hw/opencores_eth.c | 728 ++++++++++++++++++++++++++++++++++++++++++++++++++++
trace-events | 14 +
3 files changed, 743 insertions(+), 0 deletions(-)
create mode 100644 hw/opencores_eth.c
diff --git a/Makefile.objs b/Makefile.objs
index c849e51..ba6ca84 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -258,6 +258,7 @@ hw-obj-$(CONFIG_RTL8139_PCI) += rtl8139.o
hw-obj-$(CONFIG_SMC91C111) += smc91c111.o
hw-obj-$(CONFIG_LAN9118) += lan9118.o
hw-obj-$(CONFIG_NE2000_ISA) += ne2000-isa.o
+hw-obj-$(CONFIG_OPENCORES_ETH) += opencores_eth.o
# IDE
hw-obj-$(CONFIG_IDE_CORE) += ide/core.o ide/atapi.o
diff --git a/hw/opencores_eth.c b/hw/opencores_eth.c
new file mode 100644
index 0000000..64b616e
--- /dev/null
+++ b/hw/opencores_eth.c
@@ -0,0 +1,728 @@
+/*
+ * 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.h"
+#include "sysbus.h"
+#include "net.h"
+#include "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(VLANClientState *nc)
+{
+ OpenEthState *s = DO_UPCAST(NICState, nc, nc)->opaque;
+
+ 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(&s->nic->nc);
+}
+
+static int open_eth_can_receive(VLANClientState *nc)
+{
+ OpenEthState *s = DO_UPCAST(NICState, nc, nc)->opaque;
+
+ return GET_REGBIT(s, MODER, RXEN) &&
+ (s->regs[TX_BD_NUM] < 0x80) &&
+ (rx_desc(s)->len_flags & RXD_E);
+}
+
+#define POLYNOMIAL 0x04c11db6
+
+/* From FreeBSD */
+/* XXX: optimize */
+static unsigned compute_mcast_idx(const uint8_t *ep)
+{
+ uint32_t crc;
+ int carry, i, j;
+ uint8_t b;
+
+ crc = 0xffffffff;
+ for (i = 0; i < 6; i++) {
+ b = *ep++;
+ for (j = 0; j < 8; j++) {
+ carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
+ crc <<= 1;
+ b >>= 1;
+ if (carry) {
+ crc = ((crc ^ POLYNOMIAL) | carry);
+ }
+ }
+ }
+ return crc >> 26;
+}
+
+static ssize_t open_eth_receive(VLANClientState *nc,
+ const uint8_t *buf, size_t size)
+{
+ OpenEthState *s = DO_UPCAST(NICState, nc, nc)->opaque;
+ size_t maxfl = GET_REGFIELD(s, PACKETLEN, MAXFL);
+ size_t minfl = GET_REGFIELD(s, PACKETLEN, MINFL);
+ 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
+ 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;
+ }
+ if (miss) {
+ desc->len_flags |= RXD_M;
+ }
+ if (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) {
+ static const uint8_t zero[65536] = {0};
+
+ cpu_physical_memory_write(desc->buf_ptr + copy_size,
+ zero, minfl - copy_size);
+ copy_size = minfl;
+ }
+
+ 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(VLANClientState *nc)
+{
+}
+
+static NetClientInfo net_open_eth_info = {
+ .type = NET_CLIENT_TYPE_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(&s->nic->nc, 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,
+ target_phys_addr_t 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, s->nic->nc.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,
+ target_phys_addr_t 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,
+ target_phys_addr_t 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,
+ target_phys_addr_t 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 MemoryRegionOps open_eth_reg_ops = {
+ .read = open_eth_reg_read,
+ .write = open_eth_reg_write,
+};
+
+static 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_region(dev, &s->reg_io);
+
+ memory_region_init_io(&s->desc_io, &open_eth_desc_ops, s,
+ "open_eth.desc", 0x400);
+ sysbus_init_mmio_region(dev, &s->desc_io);
+
+ sysbus_init_irq(dev, &s->irq);
+
+ s->nic = qemu_new_nic(&net_open_eth_info, &s->conf,
+ s->dev.qdev.info->name, 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 SysBusDeviceInfo open_eth_info = {
+ .qdev.name = "open_eth",
+ .qdev.desc = "Opencores 10/100 Mbit Ethernet",
+ .qdev.size = sizeof(OpenEthState),
+ .qdev.reset = qdev_open_eth_reset,
+ .init = sysbus_open_eth_init,
+ .qdev.props = (Property[]) {
+ DEFINE_NIC_PROPERTIES(OpenEthState, conf),
+ DEFINE_PROP_END_OF_LIST(),
+ }
+};
+
+static void open_eth_register_devices(void)
+{
+ sysbus_register_withprop(&open_eth_info);
+}
+
+device_init(open_eth_register_devices)
diff --git a/trace-events b/trace-events
index 63d8c8e..a06c6c5 100644
--- a/trace-events
+++ b/trace-events
@@ -538,3 +538,17 @@ esp_mem_writeb_cmd_ensel(uint32_t val) "Enable selection (%2.2x)"
# monitor.c
handle_qmp_command(void *mon, const char *cmd_name) "mon %p cmd_name \"%s\""
monitor_protocol_emitter(void *mon) "mon %p"
+
+# hw/opencores_eth.c
+open_eth_mii_write(unsigned idx, uint16_t v) "MII[%02x] <- %04x"
+open_eth_mii_read(unsigned idx, uint16_t v) "MII[%02x] -> %04x"
+open_eth_update_irq(uint32_t v) "IRQ <- %x"
+open_eth_receive(unsigned len) "RX: len: %u"
+open_eth_receive_mcast(unsigned idx, uint32_t h0, uint32_t h1) "MCAST: idx = %u, hash: %08x:%08x"
+open_eth_receive_reject(void) "RX: rejected"
+open_eth_receive_desc(uint32_t addr, uint32_t len_flags) "RX: %08x, len_flags: %08x"
+open_eth_start_xmit(uint32_t addr, unsigned len, unsigned tx_len) "TX: %08x, len: %u, tx_len: %u"
+open_eth_reg_read(uint32_t addr, uint32_t v) "MAC[%02x] -> %08x"
+open_eth_reg_write(uint32_t addr, uint32_t v) "MAC[%02x] <- %08x"
+open_eth_desc_read(uint32_t addr, uint32_t v) "DESC[%04x] -> %08x"
+open_eth_desc_write(uint32_t addr, uint32_t v) "DESC[%04x] <- %08x"
--
1.7.6.4
^ permalink raw reply related [flat|nested] 6+ messages in thread* [Qemu-devel] [PATCH 2/2] target-xtensa: add Avnet LX60/LX110/LX200 boards
2011-10-10 2:27 [Qemu-devel] [PATCH 0/2] target-xtensa: add Avnet lx60/lx110/lx200 board and OpenCores Ethernet MAC Max Filippov
2011-10-10 2:27 ` [Qemu-devel] [PATCH 1/2] hw: add OpenCores 10/100 Mbps Ethernet controller Max Filippov
@ 2011-10-10 2:27 ` Max Filippov
2011-10-15 21:31 ` [Qemu-devel] [PATCH 0/2] target-xtensa: add Avnet lx60/lx110/lx200 board and OpenCores Ethernet MAC Blue Swirl
2 siblings, 0 replies; 6+ messages in thread
From: Max Filippov @ 2011-10-10 2:27 UTC (permalink / raw)
To: qemu-devel; +Cc: jcmvbkbc, linux-xtensa
These boards carry similar hardware: SDRAM (48M for LX110, 64M for LX60,
96M for LX200), 16 Mbyte FLASH, FPGA, 10/100 Mbps Ethernet PHY and 16550
UART. FPGA may be loaded with almost any Tensilica processor. It is also
used to implement Ethernet MAC, e.g. OpenCores 10/100 Mbps Ethernet MAC
and LED/DIP switches access.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---
Makefile.target | 1 +
default-configs/xtensa-softmmu.mak | 3 +
default-configs/xtensaeb-softmmu.mak | 3 +
hw/xtensa_lx60.c | 232 ++++++++++++++++++++++++++++++++++
4 files changed, 239 insertions(+), 0 deletions(-)
create mode 100644 hw/xtensa_lx60.c
diff --git a/Makefile.target b/Makefile.target
index 38a0298..c4069c2 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -371,6 +371,7 @@ obj-alpha-y += alpha_pci.o alpha_dp264.o alpha_typhoon.o
obj-xtensa-y += xtensa_pic.o
obj-xtensa-y += xtensa_sim.o
+obj-xtensa-y += xtensa_lx60.o
obj-xtensa-y += xtensa-semi.o
obj-xtensa-y += core-dc232b.o
obj-xtensa-y += core-fsf.o
diff --git a/default-configs/xtensa-softmmu.mak b/default-configs/xtensa-softmmu.mak
index e5faa09..7f0df34 100644
--- a/default-configs/xtensa-softmmu.mak
+++ b/default-configs/xtensa-softmmu.mak
@@ -1 +1,4 @@
# Default configuration for Xtensa
+
+CONFIG_SERIAL=y
+CONFIG_OPENCORES_ETH=y
diff --git a/default-configs/xtensaeb-softmmu.mak b/default-configs/xtensaeb-softmmu.mak
index e5faa09..7f0df34 100644
--- a/default-configs/xtensaeb-softmmu.mak
+++ b/default-configs/xtensaeb-softmmu.mak
@@ -1 +1,4 @@
# Default configuration for Xtensa
+
+CONFIG_SERIAL=y
+CONFIG_OPENCORES_ETH=y
diff --git a/hw/xtensa_lx60.c b/hw/xtensa_lx60.c
new file mode 100644
index 0000000..1ab6f91
--- /dev/null
+++ b/hw/xtensa_lx60.c
@@ -0,0 +1,232 @@
+/*
+ * 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 "sysemu.h"
+#include "boards.h"
+#include "loader.h"
+#include "elf.h"
+#include "memory.h"
+#include "exec-memory.h"
+#include "pc.h"
+#include "sysbus.h"
+
+typedef struct Lx60FpgaState {
+ MemoryRegion iomem;
+ uint32_t leds;
+ uint32_t switches;
+} Lx60FpgaState;
+
+static void lx60_fpga_reset(void *opaque)
+{
+ Lx60FpgaState *s = opaque;
+
+ s->leds = 0;
+ s->switches = 0;
+}
+
+static uint64_t lx60_fpga_read(void *opaque, target_phys_addr_t addr,
+ unsigned size)
+{
+ Lx60FpgaState *s = opaque;
+
+ switch (addr) {
+ case 0x0: /*build date code*/
+ return 0x27092011;
+
+ case 0x4: /*processor clock frequency, Hz*/
+ return 10000000;
+
+ case 0x8: /*LEDs (off = 0, on = 1)*/
+ return s->leds;
+
+ case 0xc: /*DIP switches (off = 0, on = 1)*/
+ return s->switches;
+ }
+ return 0;
+}
+
+static void lx60_fpga_write(void *opaque, target_phys_addr_t addr,
+ uint64_t val, unsigned size)
+{
+ Lx60FpgaState *s = opaque;
+
+ switch (addr) {
+ case 0x8: /*LEDs (off = 0, on = 1)*/
+ s->leds = val;
+ break;
+
+ case 0x10: /*board reset*/
+ if (val == 0xdead) {
+ qemu_system_reset_request();
+ }
+ break;
+ }
+}
+
+static const MemoryRegionOps lx60_fpga_ops = {
+ .read = lx60_fpga_read,
+ .write = lx60_fpga_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static Lx60FpgaState *lx60_fpga_init(MemoryRegion *address_space,
+ target_phys_addr_t base)
+{
+ Lx60FpgaState *s = g_malloc(sizeof(Lx60FpgaState));
+
+ memory_region_init_io(&s->iomem, &lx60_fpga_ops, s,
+ "lx60-fpga", 0x10000);
+ memory_region_add_subregion(address_space, base, &s->iomem);
+ lx60_fpga_reset(s);
+ qemu_register_reset(lx60_fpga_reset, s);
+ return s;
+}
+
+static void lx60_net_init(MemoryRegion *address_space,
+ target_phys_addr_t base,
+ target_phys_addr_t descriptors,
+ target_phys_addr_t buffers,
+ qemu_irq irq, NICInfo *nd)
+{
+ DeviceState *dev;
+ SysBusDevice *s;
+ MemoryRegion *ram;
+
+ dev = qdev_create(NULL, "open_eth");
+ qdev_set_nic_properties(dev, nd);
+ qdev_init_nofail(dev);
+
+ s = sysbus_from_qdev(dev);
+ sysbus_connect_irq(s, 0, irq);
+ memory_region_add_subregion(address_space, base,
+ sysbus_mmio_get_region(s, 0));
+ memory_region_add_subregion(address_space, descriptors,
+ sysbus_mmio_get_region(s, 1));
+
+ ram = g_malloc(sizeof(*ram));
+ memory_region_init_ram(ram, NULL, "open_eth.ram", 16384);
+ memory_region_add_subregion(address_space, buffers, ram);
+}
+
+static uint64_t translate_phys_addr(void *env, uint64_t addr)
+{
+ return cpu_get_phys_page_debug(env, addr);
+}
+
+static void lx60_reset(void *env)
+{
+ cpu_reset(env);
+}
+
+static void lx60_init(ram_addr_t ram_size,
+ const char *boot_device,
+ const char *kernel_filename, const char *kernel_cmdline,
+ const char *initrd_filename, const char *cpu_model)
+{
+#ifdef TARGET_WORDS_BIGENDIAN
+ int be = 1;
+#else
+ int be = 0;
+#endif
+ MemoryRegion *system_memory = get_system_memory();
+ CPUState *env = NULL;
+ MemoryRegion *ram, *rom, *system_io;
+ int n;
+
+ for (n = 0; n < smp_cpus; n++) {
+ env = cpu_init(cpu_model);
+ if (!env) {
+ fprintf(stderr, "Unable to find CPU definition\n");
+ exit(1);
+ }
+ env->sregs[PRID] = n;
+ qemu_register_reset(lx60_reset, env);
+ /* Need MMU initialized prior to ELF loading,
+ * so that ELF gets loaded into virtual addresses
+ */
+ cpu_reset(env);
+ }
+
+ ram = g_malloc(sizeof(*ram));
+ memory_region_init_ram(ram, NULL, "xtensa.sram", ram_size);
+ memory_region_add_subregion(system_memory, 0, ram);
+
+ rom = g_malloc(sizeof(*rom));
+ memory_region_init_ram(rom, NULL, "xtensa.rom", 0x1000);
+ memory_region_add_subregion(system_memory, 0xfe000000, rom);
+
+ system_io = g_malloc(sizeof(*system_io));
+ memory_region_init(system_io, "system.io", 224 * 1024 * 1024);
+ memory_region_add_subregion(system_memory, 0xf0000000, system_io);
+ lx60_fpga_init(system_io, 0x0d020000);
+ if (nd_table[0].vlan) {
+ lx60_net_init(system_io, 0x0d030000, 0x0d030400, 0x0d800000,
+ xtensa_get_extint(env, 1), nd_table);
+ }
+
+ if (!serial_hds[0]) {
+ serial_hds[0] = qemu_chr_new("serial0", "null", NULL);
+ }
+ serial_mm_init(0xfd050020, 2, xtensa_get_extint(env, 0),
+ 115200, serial_hds[0], 1, be);
+
+ if (kernel_filename) {
+ uint64_t elf_entry;
+ uint64_t elf_lowaddr;
+ int success = load_elf(kernel_filename, translate_phys_addr, env,
+ &elf_entry, &elf_lowaddr, NULL, be, ELF_MACHINE, 0);
+ if (success > 0) {
+ env->pc = elf_entry;
+ }
+ }
+}
+
+static void xtensa_lx60_init(ram_addr_t ram_size,
+ const char *boot_device,
+ const char *kernel_filename, const char *kernel_cmdline,
+ const char *initrd_filename, const char *cpu_model)
+{
+ if (!cpu_model) {
+ cpu_model = "dc232b";
+ }
+ lx60_init(ram_size, boot_device, kernel_filename, kernel_cmdline,
+ initrd_filename, cpu_model);
+}
+
+static QEMUMachine xtensa_lx60_machine = {
+ .name = "lx60",
+ .desc = "lx60 EVB (dc232b)",
+ .init = xtensa_lx60_init,
+ .max_cpus = 4,
+};
+
+static void xtensa_lx60_machine_init(void)
+{
+ qemu_register_machine(&xtensa_lx60_machine);
+}
+
+machine_init(xtensa_lx60_machine_init);
--
1.7.6.4
^ permalink raw reply related [flat|nested] 6+ messages in thread