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-rw-r--r--hw/xilinx_axienet.c898
1 files changed, 898 insertions, 0 deletions
diff --git a/hw/xilinx_axienet.c b/hw/xilinx_axienet.c
new file mode 100644
index 0000000000..464d275ad7
--- /dev/null
+++ b/hw/xilinx_axienet.c
@@ -0,0 +1,898 @@
+/*
+ * QEMU model of Xilinx AXI-Ethernet.
+ *
+ * Copyright (c) 2011 Edgar E. Iglesias.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "sysbus.h"
+#include "qemu-char.h"
+#include "qemu-log.h"
+#include "net.h"
+#include "net/checksum.h"
+
+#include "xilinx_axidma.h"
+
+#define DPHY(x)
+
+/* Advertisement control register. */
+#define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */
+#define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */
+#define ADVERTISE_100HALF 0x0080 /* Try for 100mbps half-duplex */
+#define ADVERTISE_100FULL 0x0100 /* Try for 100mbps full-duplex */
+
+struct PHY {
+ uint32_t regs[32];
+
+ int link;
+
+ unsigned int (*read)(struct PHY *phy, unsigned int req);
+ void (*write)(struct PHY *phy, unsigned int req,
+ unsigned int data);
+};
+
+static unsigned int tdk_read(struct PHY *phy, unsigned int req)
+{
+ int regnum;
+ unsigned r = 0;
+
+ regnum = req & 0x1f;
+
+ switch (regnum) {
+ case 1:
+ if (!phy->link) {
+ break;
+ }
+ /* MR1. */
+ /* Speeds and modes. */
+ r |= (1 << 13) | (1 << 14);
+ r |= (1 << 11) | (1 << 12);
+ r |= (1 << 5); /* Autoneg complete. */
+ r |= (1 << 3); /* Autoneg able. */
+ r |= (1 << 2); /* link. */
+ r |= (1 << 1); /* link. */
+ break;
+ case 5:
+ /* Link partner ability.
+ We are kind; always agree with whatever best mode
+ the guest advertises. */
+ r = 1 << 14; /* Success. */
+ /* Copy advertised modes. */
+ r |= phy->regs[4] & (15 << 5);
+ /* Autoneg support. */
+ r |= 1;
+ break;
+ case 17:
+ /* Marvel PHY on many xilinx boards. */
+ r = 0x8000; /* 1000Mb */
+ break;
+ case 18:
+ {
+ /* Diagnostics reg. */
+ int duplex = 0;
+ int speed_100 = 0;
+
+ if (!phy->link) {
+ break;
+ }
+
+ /* Are we advertising 100 half or 100 duplex ? */
+ speed_100 = !!(phy->regs[4] & ADVERTISE_100HALF);
+ speed_100 |= !!(phy->regs[4] & ADVERTISE_100FULL);
+
+ /* Are we advertising 10 duplex or 100 duplex ? */
+ duplex = !!(phy->regs[4] & ADVERTISE_100FULL);
+ duplex |= !!(phy->regs[4] & ADVERTISE_10FULL);
+ r = (speed_100 << 10) | (duplex << 11);
+ }
+ break;
+
+ default:
+ r = phy->regs[regnum];
+ break;
+ }
+ DPHY(qemu_log("\n%s %x = reg[%d]\n", __func__, r, regnum));
+ return r;
+}
+
+static void
+tdk_write(struct PHY *phy, unsigned int req, unsigned int data)
+{
+ int regnum;
+
+ regnum = req & 0x1f;
+ DPHY(qemu_log("%s reg[%d] = %x\n", __func__, regnum, data));
+ switch (regnum) {
+ default:
+ phy->regs[regnum] = data;
+ break;
+ }
+}
+
+static void
+tdk_init(struct PHY *phy)
+{
+ phy->regs[0] = 0x3100;
+ /* PHY Id. */
+ phy->regs[2] = 0x0300;
+ phy->regs[3] = 0xe400;
+ /* Autonegotiation advertisement reg. */
+ phy->regs[4] = 0x01E1;
+ phy->link = 1;
+
+ phy->read = tdk_read;
+ phy->write = tdk_write;
+}
+
+struct MDIOBus {
+ /* bus. */
+ int mdc;
+ int mdio;
+
+ /* decoder. */
+ enum {
+ PREAMBLE,
+ SOF,
+ OPC,
+ ADDR,
+ REQ,
+ TURNAROUND,
+ DATA
+ } state;
+ unsigned int drive;
+
+ unsigned int cnt;
+ unsigned int addr;
+ unsigned int opc;
+ unsigned int req;
+ unsigned int data;
+
+ struct PHY *devs[32];
+};
+
+static void
+mdio_attach(struct MDIOBus *bus, struct PHY *phy, unsigned int addr)
+{
+ bus->devs[addr & 0x1f] = phy;
+}
+
+#ifdef USE_THIS_DEAD_CODE
+static void
+mdio_detach(struct MDIOBus *bus, struct PHY *phy, unsigned int addr)
+{
+ bus->devs[addr & 0x1f] = NULL;
+}
+#endif
+
+static uint16_t mdio_read_req(struct MDIOBus *bus, unsigned int addr,
+ unsigned int reg)
+{
+ struct PHY *phy;
+ uint16_t data;
+
+ phy = bus->devs[addr];
+ if (phy && phy->read) {
+ data = phy->read(phy, reg);
+ } else {
+ data = 0xffff;
+ }
+ DPHY(qemu_log("%s addr=%d reg=%d data=%x\n", __func__, addr, reg, data));
+ return data;
+}
+
+static void mdio_write_req(struct MDIOBus *bus, unsigned int addr,
+ unsigned int reg, uint16_t data)
+{
+ struct PHY *phy;
+
+ DPHY(qemu_log("%s addr=%d reg=%d data=%x\n", __func__, addr, reg, data));
+ phy = bus->devs[addr];
+ if (phy && phy->write) {
+ phy->write(phy, reg, data);
+ }
+}
+
+#define DENET(x)
+
+#define R_RAF (0x000 / 4)
+enum {
+ RAF_MCAST_REJ = (1 << 1),
+ RAF_BCAST_REJ = (1 << 2),
+ RAF_EMCF_EN = (1 << 12),
+ RAF_NEWFUNC_EN = (1 << 11)
+};
+
+#define R_IS (0x00C / 4)
+enum {
+ IS_HARD_ACCESS_COMPLETE = 1,
+ IS_AUTONEG = (1 << 1),
+ IS_RX_COMPLETE = (1 << 2),
+ IS_RX_REJECT = (1 << 3),
+ IS_TX_COMPLETE = (1 << 5),
+ IS_RX_DCM_LOCK = (1 << 6),
+ IS_MGM_RDY = (1 << 7),
+ IS_PHY_RST_DONE = (1 << 8),
+};
+
+#define R_IP (0x010 / 4)
+#define R_IE (0x014 / 4)
+#define R_UAWL (0x020 / 4)
+#define R_UAWU (0x024 / 4)
+#define R_PPST (0x030 / 4)
+enum {
+ PPST_LINKSTATUS = (1 << 0),
+ PPST_PHY_LINKSTATUS = (1 << 7),
+};
+
+#define R_STATS_RX_BYTESL (0x200 / 4)
+#define R_STATS_RX_BYTESH (0x204 / 4)
+#define R_STATS_TX_BYTESL (0x208 / 4)
+#define R_STATS_TX_BYTESH (0x20C / 4)
+#define R_STATS_RXL (0x290 / 4)
+#define R_STATS_RXH (0x294 / 4)
+#define R_STATS_RX_BCASTL (0x2a0 / 4)
+#define R_STATS_RX_BCASTH (0x2a4 / 4)
+#define R_STATS_RX_MCASTL (0x2a8 / 4)
+#define R_STATS_RX_MCASTH (0x2ac / 4)
+
+#define R_RCW0 (0x400 / 4)
+#define R_RCW1 (0x404 / 4)
+enum {
+ RCW1_VLAN = (1 << 27),
+ RCW1_RX = (1 << 28),
+ RCW1_FCS = (1 << 29),
+ RCW1_JUM = (1 << 30),
+ RCW1_RST = (1 << 31),
+};
+
+#define R_TC (0x408 / 4)
+enum {
+ TC_VLAN = (1 << 27),
+ TC_TX = (1 << 28),
+ TC_FCS = (1 << 29),
+ TC_JUM = (1 << 30),
+ TC_RST = (1 << 31),
+};
+
+#define R_EMMC (0x410 / 4)
+enum {
+ EMMC_LINKSPEED_10MB = (0 << 30),
+ EMMC_LINKSPEED_100MB = (1 << 30),
+ EMMC_LINKSPEED_1000MB = (2 << 30),
+};
+
+#define R_PHYC (0x414 / 4)
+
+#define R_MC (0x500 / 4)
+#define MC_EN (1 << 6)
+
+#define R_MCR (0x504 / 4)
+#define R_MWD (0x508 / 4)
+#define R_MRD (0x50c / 4)
+#define R_MIS (0x600 / 4)
+#define R_MIP (0x620 / 4)
+#define R_MIE (0x640 / 4)
+#define R_MIC (0x640 / 4)
+
+#define R_UAW0 (0x700 / 4)
+#define R_UAW1 (0x704 / 4)
+#define R_FMI (0x708 / 4)
+#define R_AF0 (0x710 / 4)
+#define R_AF1 (0x714 / 4)
+#define R_MAX (0x34 / 4)
+
+/* Indirect registers. */
+struct TEMAC {
+ struct MDIOBus mdio_bus;
+ struct PHY phy;
+
+ void *parent;
+};
+
+struct XilinxAXIEnet {
+ SysBusDevice busdev;
+ qemu_irq irq;
+ void *dmach;
+ NICState *nic;
+ NICConf conf;
+
+
+ uint32_t c_rxmem;
+ uint32_t c_txmem;
+ uint32_t c_phyaddr;
+
+ struct TEMAC TEMAC;
+
+ /* MII regs. */
+ union {
+ uint32_t regs[4];
+ struct {
+ uint32_t mc;
+ uint32_t mcr;
+ uint32_t mwd;
+ uint32_t mrd;
+ };
+ } mii;
+
+ struct {
+ uint64_t rx_bytes;
+ uint64_t tx_bytes;
+
+ uint64_t rx;
+ uint64_t rx_bcast;
+ uint64_t rx_mcast;
+ } stats;
+
+ /* Receive configuration words. */
+ uint32_t rcw[2];
+ /* Transmit config. */
+ uint32_t tc;
+ uint32_t emmc;
+ uint32_t phyc;
+
+ /* Unicast Address Word. */
+ uint32_t uaw[2];
+ /* Unicast address filter used with extended mcast. */
+ uint32_t ext_uaw[2];
+ uint32_t fmi;
+
+ uint32_t regs[R_MAX];
+
+ /* Multicast filter addrs. */
+ uint32_t maddr[4][2];
+ /* 32K x 1 lookup filter. */
+ uint32_t ext_mtable[1024];
+
+
+ uint8_t *rxmem;
+};
+
+static void axienet_rx_reset(struct XilinxAXIEnet *s)
+{
+ s->rcw[1] = RCW1_JUM | RCW1_FCS | RCW1_RX | RCW1_VLAN;
+}
+
+static void axienet_tx_reset(struct XilinxAXIEnet *s)
+{
+ s->tc = TC_JUM | TC_TX | TC_VLAN;
+}
+
+static inline int axienet_rx_resetting(struct XilinxAXIEnet *s)
+{
+ return s->rcw[1] & RCW1_RST;
+}
+
+static inline int axienet_rx_enabled(struct XilinxAXIEnet *s)
+{
+ return s->rcw[1] & RCW1_RX;
+}
+
+static inline int axienet_extmcf_enabled(struct XilinxAXIEnet *s)
+{
+ return !!(s->regs[R_RAF] & RAF_EMCF_EN);
+}
+
+static inline int axienet_newfunc_enabled(struct XilinxAXIEnet *s)
+{
+ return !!(s->regs[R_RAF] & RAF_NEWFUNC_EN);
+}
+
+static void axienet_reset(struct XilinxAXIEnet *s)
+{
+ axienet_rx_reset(s);
+ axienet_tx_reset(s);
+
+ s->regs[R_PPST] = PPST_LINKSTATUS | PPST_PHY_LINKSTATUS;
+ s->regs[R_IS] = IS_AUTONEG | IS_RX_DCM_LOCK | IS_MGM_RDY | IS_PHY_RST_DONE;
+
+ s->emmc = EMMC_LINKSPEED_100MB;
+}
+
+static void enet_update_irq(struct XilinxAXIEnet *s)
+{
+ s->regs[R_IP] = s->regs[R_IS] & s->regs[R_IE];
+ qemu_set_irq(s->irq, !!s->regs[R_IP]);
+}
+
+static uint32_t enet_readl(void *opaque, target_phys_addr_t addr)
+{
+ struct XilinxAXIEnet *s = opaque;
+ uint32_t r = 0;
+ addr >>= 2;
+
+ switch (addr) {
+ case R_RCW0:
+ case R_RCW1:
+ r = s->rcw[addr & 1];
+ break;
+
+ case R_TC:
+ r = s->tc;
+ break;
+
+ case R_EMMC:
+ r = s->emmc;
+ break;
+
+ case R_PHYC:
+ r = s->phyc;
+ break;
+
+ case R_MCR:
+ r = s->mii.regs[addr & 3] | (1 << 7); /* Always ready. */
+ break;
+
+ case R_STATS_RX_BYTESL:
+ case R_STATS_RX_BYTESH:
+ r = s->stats.rx_bytes >> (32 * (addr & 1));
+ break;
+
+ case R_STATS_TX_BYTESL:
+ case R_STATS_TX_BYTESH:
+ r = s->stats.tx_bytes >> (32 * (addr & 1));
+ break;
+
+ case R_STATS_RXL:
+ case R_STATS_RXH:
+ r = s->stats.rx >> (32 * (addr & 1));
+ break;
+ case R_STATS_RX_BCASTL:
+ case R_STATS_RX_BCASTH:
+ r = s->stats.rx_bcast >> (32 * (addr & 1));
+ break;
+ case R_STATS_RX_MCASTL:
+ case R_STATS_RX_MCASTH:
+ r = s->stats.rx_mcast >> (32 * (addr & 1));
+ break;
+
+ case R_MC:
+ case R_MWD:
+ case R_MRD:
+ r = s->mii.regs[addr & 3];
+ break;
+
+ case R_UAW0:
+ case R_UAW1:
+ r = s->uaw[addr & 1];
+ break;
+
+ case R_UAWU:
+ case R_UAWL:
+ r = s->ext_uaw[addr & 1];
+ break;
+
+ case R_FMI:
+ r = s->fmi;
+ break;
+
+ case R_AF0:
+ case R_AF1:
+ r = s->maddr[s->fmi & 3][addr & 1];
+ break;
+
+ case 0x8000 ... 0x83ff:
+ r = s->ext_mtable[addr - 0x8000];
+ break;
+
+ default:
+ if (addr < ARRAY_SIZE(s->regs)) {
+ r = s->regs[addr];
+ }
+ DENET(qemu_log("%s addr=" TARGET_FMT_plx " v=%x\n",
+ __func__, addr * 4, r));
+ break;
+ }
+ return r;
+}
+
+static void
+enet_writel(void *opaque, target_phys_addr_t addr, uint32_t value)
+{
+ struct XilinxAXIEnet *s = opaque;
+ struct TEMAC *t = &s->TEMAC;
+
+ addr >>= 2;
+ switch (addr) {
+ case R_RCW0:
+ case R_RCW1:
+ s->rcw[addr & 1] = value;
+ if ((addr & 1) && value & RCW1_RST) {
+ axienet_rx_reset(s);
+ }
+ break;
+
+ case R_TC:
+ s->tc = value;
+ if (value & TC_RST) {
+ axienet_tx_reset(s);
+ }
+ break;
+
+ case R_EMMC:
+ s->emmc = value;
+ break;
+
+ case R_PHYC:
+ s->phyc = value;
+ break;
+
+ case R_MC:
+ value &= ((1 < 7) - 1);
+
+ /* Enable the MII. */
+ if (value & MC_EN) {
+ unsigned int miiclkdiv = value & ((1 << 6) - 1);
+ if (!miiclkdiv) {
+ qemu_log("AXIENET: MDIO enabled but MDIOCLK is zero!\n");
+ }
+ }
+ s->mii.mc = value;
+ break;
+
+ case R_MCR: {
+ unsigned int phyaddr = (value >> 24) & 0x1f;
+ unsigned int regaddr = (value >> 16) & 0x1f;
+ unsigned int op = (value >> 14) & 3;
+ unsigned int initiate = (value >> 11) & 1;
+
+ if (initiate) {
+ if (op == 1) {
+ mdio_write_req(&t->mdio_bus, phyaddr, regaddr, s->mii.mwd);
+ } else if (op == 2) {
+ s->mii.mrd = mdio_read_req(&t->mdio_bus, phyaddr, regaddr);
+ } else {
+ qemu_log("AXIENET: invalid MDIOBus OP=%d\n", op);
+ }
+ }
+ s->mii.mcr = value;
+ break;
+ }
+
+ case R_MWD:
+ case R_MRD:
+ s->mii.regs[addr & 3] = value;
+ break;
+
+
+ case R_UAW0:
+ case R_UAW1:
+ s->uaw[addr & 1] = value;
+ break;
+
+ case R_UAWL:
+ case R_UAWU:
+ s->ext_uaw[addr & 1] = value;
+ break;
+
+ case R_FMI:
+ s->fmi = value;
+ break;
+
+ case R_AF0:
+ case R_AF1:
+ s->maddr[s->fmi & 3][addr & 1] = value;
+ break;
+
+ case 0x8000 ... 0x83ff:
+ s->ext_mtable[addr - 0x8000] = value;
+ break;
+
+ default:
+ DENET(qemu_log("%s addr=" TARGET_FMT_plx " v=%x\n",
+ __func__, addr * 4, value));
+ if (addr < ARRAY_SIZE(s->regs)) {
+ s->regs[addr] = value;
+ }
+ break;
+ }
+ enet_update_irq(s);
+}
+
+static CPUReadMemoryFunc * const enet_read[] = {
+ &enet_readl,
+ &enet_readl,
+ &enet_readl,
+};
+
+static CPUWriteMemoryFunc * const enet_write[] = {
+ &enet_writel,
+ &enet_writel,
+ &enet_writel,
+};
+
+static int eth_can_rx(VLANClientState *nc)
+{
+ struct XilinxAXIEnet *s = DO_UPCAST(NICState, nc, nc)->opaque;
+
+ /* RX enabled? */
+ return !axienet_rx_resetting(s) && axienet_rx_enabled(s);
+}
+
+static int enet_match_addr(const uint8_t *buf, uint32_t f0, uint32_t f1)
+{
+ int match = 1;
+
+ if (memcmp(buf, &f0, 4)) {
+ match = 0;
+ }
+
+ if (buf[4] != (f1 & 0xff) || buf[5] != ((f1 >> 8) & 0xff)) {
+ match = 0;
+ }
+
+ return match;
+}
+
+static ssize_t eth_rx(VLANClientState *nc, const uint8_t *buf, size_t size)
+{
+ struct XilinxAXIEnet *s = DO_UPCAST(NICState, nc, nc)->opaque;
+ static const unsigned char sa_bcast[6] = {0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff};
+ static const unsigned char sa_ipmcast[3] = {0x01, 0x00, 0x52};
+ uint32_t app[6] = {0};
+ int promisc = s->fmi & (1 << 31);
+ int unicast, broadcast, multicast, ip_multicast = 0;
+ uint32_t csum32;
+ uint16_t csum16;
+ int i;
+
+ s = s;
+ DENET(qemu_log("%s: %zd bytes\n", __func__, size));
+
+ unicast = ~buf[0] & 0x1;
+ broadcast = memcmp(buf, sa_bcast, 6) == 0;
+ multicast = !unicast && !broadcast;
+ if (multicast && (memcmp(sa_ipmcast, buf, sizeof sa_ipmcast) == 0)) {
+ ip_multicast = 1;
+ }
+
+ /* Jumbo or vlan sizes ? */
+ if (!(s->rcw[1] & RCW1_JUM)) {
+ if (size > 1518 && size <= 1522 && !(s->rcw[1] & RCW1_VLAN)) {
+ return size;
+ }
+ }
+
+ /* Basic Address filters. If you want to use the extended filters
+ you'll generally have to place the ethernet mac into promiscuous mode
+ to avoid the basic filtering from dropping most frames. */
+ if (!promisc) {
+ if (unicast) {
+ if (!enet_match_addr(buf, s->uaw[0], s->uaw[1])) {
+ return size;
+ }
+ } else {
+ if (broadcast) {
+ /* Broadcast. */
+ if (s->regs[R_RAF] & RAF_BCAST_REJ) {
+ return size;
+ }
+ } else {
+ int drop = 1;
+
+ /* Multicast. */
+ if (s->regs[R_RAF] & RAF_MCAST_REJ) {
+ return size;
+ }
+
+ for (i = 0; i < 4; i++) {
+ if (enet_match_addr(buf, s->maddr[i][0], s->maddr[i][1])) {
+ drop = 0;
+ break;
+ }
+ }
+
+ if (drop) {
+ return size;
+ }
+ }
+ }
+ }
+
+ /* Extended mcast filtering enabled? */
+ if (axienet_newfunc_enabled(s) && axienet_extmcf_enabled(s)) {
+ if (unicast) {
+ if (!enet_match_addr(buf, s->ext_uaw[0], s->ext_uaw[1])) {
+ return size;
+ }
+ } else {
+ if (broadcast) {
+ /* Broadcast. ??? */
+ if (s->regs[R_RAF] & RAF_BCAST_REJ) {
+ return size;
+ }
+ } else {
+ int idx, bit;
+
+ /* Multicast. */
+ if (!memcmp(buf, sa_ipmcast, 3)) {
+ return size;
+ }
+
+ idx = (buf[4] & 0x7f) << 8;
+ idx |= buf[5];
+
+ bit = 1 << (idx & 0x1f);
+ idx >>= 5;
+
+ if (!(s->ext_mtable[idx] & bit)) {
+ return size;
+ }
+ }
+ }
+ }
+
+ if (size < 12) {
+ s->regs[R_IS] |= IS_RX_REJECT;
+ enet_update_irq(s);
+ return -1;
+ }
+
+ if (size > (s->c_rxmem - 4)) {
+ size = s->c_rxmem - 4;
+ }
+
+ memcpy(s->rxmem, buf, size);
+ memset(s->rxmem + size, 0, 4); /* Clear the FCS. */
+
+ if (s->rcw[1] & RCW1_FCS) {
+ size += 4; /* fcs is inband. */
+ }
+
+ app[0] = 5 << 28;
+ csum32 = net_checksum_add(size - 14, (uint8_t *)s->rxmem + 14);
+ /* Fold it once. */
+ csum32 = (csum32 & 0xffff) + (csum32 >> 16);
+ /* And twice to get rid of possible carries. */
+ csum16 = (csum32 & 0xffff) + (csum32 >> 16);
+ app[3] = csum16;
+ app[4] = size & 0xffff;
+
+ s->stats.rx_bytes += size;
+ s->stats.rx++;
+ if (multicast) {
+ s->stats.rx_mcast++;
+ app[2] |= 1 | (ip_multicast << 1);
+ } else if (broadcast) {
+ s->stats.rx_bcast++;
+ app[2] |= 1 << 3;
+ }
+
+ /* Good frame. */
+ app[2] |= 1 << 6;
+
+ xlx_dma_push_to_dma(s->dmach, (void *)s->rxmem, size, app);
+
+ s->regs[R_IS] |= IS_RX_COMPLETE;
+ enet_update_irq(s);
+ return size;
+}
+
+static void eth_cleanup(VLANClientState *nc)
+{
+ /* FIXME. */
+ struct XilinxAXIEnet *s = DO_UPCAST(NICState, nc, nc)->opaque;
+ qemu_free(s->rxmem);
+ qemu_free(s);
+}
+
+static void
+axienet_stream_push(void *opaque, uint8_t *buf, size_t size, uint32_t *hdr)
+{
+ struct XilinxAXIEnet *s = opaque;
+
+ /* TX enable ? */
+ if (!(s->tc & TC_TX)) {
+ return;
+ }
+
+ /* Jumbo or vlan sizes ? */
+ if (!(s->tc & TC_JUM)) {
+ if (size > 1518 && size <= 1522 && !(s->tc & TC_VLAN)) {
+ return;
+ }
+ }
+
+ if (hdr[0] & 1) {
+ unsigned int start_off = hdr[1] >> 16;
+ unsigned int write_off = hdr[1] & 0xffff;
+ uint32_t tmp_csum;
+ uint16_t csum;
+
+ tmp_csum = net_checksum_add(size - start_off,
+ (uint8_t *)buf + start_off);
+ /* Accumulate the seed. */
+ tmp_csum += hdr[2] & 0xffff;
+
+ /* Fold the 32bit partial checksum. */
+ csum = net_checksum_finish(tmp_csum);
+
+ /* Writeback. */
+ buf[write_off] = csum >> 8;
+ buf[write_off + 1] = csum & 0xff;
+ }
+
+ qemu_send_packet(&s->nic->nc, buf, size);
+
+ s->stats.tx_bytes += size;
+ s->regs[R_IS] |= IS_TX_COMPLETE;
+ enet_update_irq(s);
+}
+
+static NetClientInfo net_xilinx_enet_info = {
+ .type = NET_CLIENT_TYPE_NIC,
+ .size = sizeof(NICState),
+ .can_receive = eth_can_rx,
+ .receive = eth_rx,
+ .cleanup = eth_cleanup,
+};
+
+static int xilinx_enet_init(SysBusDevice *dev)
+{
+ struct XilinxAXIEnet *s = FROM_SYSBUS(typeof(*s), dev);
+ int enet_regs;
+
+ sysbus_init_irq(dev, &s->irq);
+
+ if (!s->dmach) {
+ hw_error("Unconnected Xilinx Ethernet MAC.\n");
+ }
+
+ xlx_dma_connect_client(s->dmach, s, axienet_stream_push);
+
+ enet_regs = cpu_register_io_memory(enet_read, enet_write, s,
+ DEVICE_LITTLE_ENDIAN);
+ sysbus_init_mmio(dev, 0x40000, enet_regs);
+
+ qemu_macaddr_default_if_unset(&s->conf.macaddr);
+ s->nic = qemu_new_nic(&net_xilinx_enet_info, &s->conf,
+ dev->qdev.info->name, dev->qdev.id, s);
+ qemu_format_nic_info_str(&s->nic->nc, s->conf.macaddr.a);
+
+ tdk_init(&s->TEMAC.phy);
+ mdio_attach(&s->TEMAC.mdio_bus, &s->TEMAC.phy, s->c_phyaddr);
+
+ s->TEMAC.parent = s;
+
+ s->rxmem = qemu_malloc(s->c_rxmem);
+ axienet_reset(s);
+
+ return 0;
+}
+
+static SysBusDeviceInfo xilinx_enet_info = {
+ .init = xilinx_enet_init,
+ .qdev.name = "xilinx,axienet",
+ .qdev.size = sizeof(struct XilinxAXIEnet),
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_UINT32("phyaddr", struct XilinxAXIEnet, c_phyaddr, 7),
+ DEFINE_PROP_UINT32("c_rxmem", struct XilinxAXIEnet, c_rxmem, 0x1000),
+ DEFINE_PROP_UINT32("c_txmem", struct XilinxAXIEnet, c_txmem, 0x1000),
+ DEFINE_PROP_PTR("dmach", struct XilinxAXIEnet, dmach),
+ DEFINE_NIC_PROPERTIES(struct XilinxAXIEnet, conf),
+ DEFINE_PROP_END_OF_LIST(),
+ }
+};
+static void xilinx_enet_register(void)
+{
+ sysbus_register_withprop(&xilinx_enet_info);
+}
+
+device_init(xilinx_enet_register)