Add Enhanced Three-Speed Ethernet Controller (eTSEC)

This implementation doesn't include ring priority, TCP/IP Off-Load, QoS.
Signed-off-by: NFabien Chouteau <chouteau@adacore.com>
Signed-off-by: NAlexander Graf <agraf@suse.de>

default-configs/ppc-softmmu.mak

@@ -47,4 +47,5 @@ CONFIG_E500=y
 CONFIG_OPENPIC_KVM=$(and $(CONFIG_E500),$(CONFIG_KVM))
 # For PReP
 CONFIG_MC146818RTC=y
+CONFIG_ETSEC=y
 CONFIG_ISA_TESTDEV=y

hw/net/Makefile.objs

@@ -32,3 +32,6 @@ obj-$(CONFIG_XILINX_ETHLITE) += xilinx_ethlite.o
 
 obj-$(CONFIG_VIRTIO) += virtio-net.o
 obj-y += vhost_net.o
+
+obj-$(CONFIG_ETSEC) += fsl_etsec/etsec.o fsl_etsec/registers.o \
+			fsl_etsec/rings.o fsl_etsec/miim.o

hw/net/fsl_etsec/etsec.c

+/*
+ * QEMU Freescale eTSEC Emulator
+ *
+ * Copyright (c) 2011-2013 AdaCore
+ *
+ * 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.
+ */
+
+/*
+ * This implementation doesn't include ring priority, TCP/IP Off-Load, QoS.
+ */
+
+#include "sysemu/sysemu.h"
+#include "hw/sysbus.h"
+#include "trace.h"
+#include "hw/ptimer.h"
+#include "etsec.h"
+#include "registers.h"
+
+/* #define HEX_DUMP */
+/* #define DEBUG_REGISTER */
+
+#ifdef DEBUG_REGISTER
+static const int debug_etsec = 1;
+#else
+static const int debug_etsec;
+#endif
+
+#define DPRINTF(fmt, ...) do {                 \
+    if (debug_etsec) {                         \
+        qemu_log(fmt , ## __VA_ARGS__);        \
+    }                                          \
+    } while (0)
+
+static uint64_t etsec_read(void *opaque, hwaddr addr, unsigned size)
+{
+    eTSEC          *etsec     = opaque;
+    uint32_t        reg_index = addr / 4;
+    eTSEC_Register *reg       = NULL;
+    uint32_t        ret       = 0x0;
+
+    assert(reg_index < ETSEC_REG_NUMBER);
+
+    reg = &etsec->regs[reg_index];
+
+
+    switch (reg->access) {
+    case ACC_WO:
+        ret = 0x00000000;
+        break;
+
+    case ACC_RW:
+    case ACC_W1C:
+    case ACC_RO:
+    default:
+        ret = reg->value;
+        break;
+    }
+
+    DPRINTF("Read  0x%08x @ 0x" TARGET_FMT_plx
+            "                            : %s (%s)\n",
+            ret, addr, reg->name, reg->desc);
+
+    return ret;
+}
+
+static void write_tstat(eTSEC          *etsec,
+                        eTSEC_Register *reg,
+                        uint32_t        reg_index,
+                        uint32_t        value)
+{
+    int i = 0;
+
+    for (i = 0; i < 8; i++) {
+        /* Check THLTi flag in TSTAT */
+        if (value & (1 << (31 - i))) {
+            etsec_walk_tx_ring(etsec, i);
+        }
+    }
+
+    /* Write 1 to clear */
+    reg->value &= ~value;
+}
+
+static void write_rstat(eTSEC          *etsec,
+                        eTSEC_Register *reg,
+                        uint32_t        reg_index,
+                        uint32_t        value)
+{
+    int i = 0;
+
+    for (i = 0; i < 8; i++) {
+        /* Check QHLTi flag in RSTAT */
+        if (value & (1 << (23 - i)) && !(reg->value & (1 << (23 - i)))) {
+            etsec_walk_rx_ring(etsec, i);
+        }
+    }
+
+    /* Write 1 to clear */
+    reg->value &= ~value;
+}
+
+static void write_tbasex(eTSEC          *etsec,
+                         eTSEC_Register *reg,
+                         uint32_t        reg_index,
+                         uint32_t        value)
+{
+    reg->value = value & ~0x7;
+
+    /* Copy this value in the ring's TxBD pointer */
+    etsec->regs[TBPTR0 + (reg_index - TBASE0)].value = value & ~0x7;
+}
+
+static void write_rbasex(eTSEC          *etsec,
+                         eTSEC_Register *reg,
+                         uint32_t        reg_index,
+                         uint32_t        value)
+{
+    reg->value = value & ~0x7;
+
+    /* Copy this value in the ring's RxBD pointer */
+    etsec->regs[RBPTR0 + (reg_index - RBASE0)].value = value & ~0x7;
+}
+
+static void write_ievent(eTSEC          *etsec,
+                         eTSEC_Register *reg,
+                         uint32_t        reg_index,
+                         uint32_t        value)
+{
+    /* Write 1 to clear */
+    reg->value &= ~value;
+
+    if (!(reg->value & (IEVENT_TXF | IEVENT_TXF))) {
+        qemu_irq_lower(etsec->tx_irq);
+    }
+    if (!(reg->value & (IEVENT_RXF | IEVENT_RXF))) {
+        qemu_irq_lower(etsec->rx_irq);
+    }
+
+    if (!(reg->value & (IEVENT_MAG | IEVENT_GTSC | IEVENT_GRSC | IEVENT_TXC |
+                        IEVENT_RXC | IEVENT_BABR | IEVENT_BABT | IEVENT_LC |
+                        IEVENT_CRL | IEVENT_FGPI | IEVENT_FIR | IEVENT_FIQ |
+                        IEVENT_DPE | IEVENT_PERR | IEVENT_EBERR | IEVENT_TXE |
+                        IEVENT_XFUN | IEVENT_BSY | IEVENT_MSRO | IEVENT_MMRD |
+                        IEVENT_MMRW))) {
+        qemu_irq_lower(etsec->err_irq);
+    }
+}
+
+static void write_dmactrl(eTSEC          *etsec,
+                          eTSEC_Register *reg,
+                          uint32_t        reg_index,
+                          uint32_t        value)
+{
+    reg->value = value;
+
+    if (value & DMACTRL_GRS) {
+
+        if (etsec->rx_buffer_len != 0) {
+            /* Graceful receive stop delayed until end of frame */
+        } else {
+            /* Graceful receive stop now */
+            etsec->regs[IEVENT].value |= IEVENT_GRSC;
+            if (etsec->regs[IMASK].value & IMASK_GRSCEN) {
+                qemu_irq_raise(etsec->err_irq);
+            }
+        }
+    }
+
+    if (value & DMACTRL_GTS) {
+
+        if (etsec->tx_buffer_len != 0) {
+            /* Graceful transmit stop delayed until end of frame */
+        } else {
+            /* Graceful transmit stop now */
+            etsec->regs[IEVENT].value |= IEVENT_GTSC;
+            if (etsec->regs[IMASK].value & IMASK_GTSCEN) {
+                qemu_irq_raise(etsec->err_irq);
+            }
+        }
+    }
+
+    if (!(value & DMACTRL_WOP)) {
+        /* Start polling */
+        ptimer_stop(etsec->ptimer);
+        ptimer_set_count(etsec->ptimer, 1);
+        ptimer_run(etsec->ptimer, 1);
+    }
+}
+
+static void etsec_write(void     *opaque,
+                        hwaddr    addr,
+                        uint64_t  value,
+                        unsigned  size)
+{
+    eTSEC          *etsec     = opaque;
+    uint32_t        reg_index = addr / 4;
+    eTSEC_Register *reg       = NULL;
+    uint32_t        before    = 0x0;
+
+    assert(reg_index < ETSEC_REG_NUMBER);
+
+    reg = &etsec->regs[reg_index];
+    before = reg->value;
+
+    switch (reg_index) {
+    case IEVENT:
+        write_ievent(etsec, reg, reg_index, value);
+        break;
+
+    case DMACTRL:
+        write_dmactrl(etsec, reg, reg_index, value);
+        break;
+
+    case TSTAT:
+        write_tstat(etsec, reg, reg_index, value);
+        break;
+
+    case RSTAT:
+        write_rstat(etsec, reg, reg_index, value);
+        break;
+
+    case TBASE0 ... TBASE7:
+        write_tbasex(etsec, reg, reg_index, value);
+        break;
+
+    case RBASE0 ... RBASE7:
+        write_rbasex(etsec, reg, reg_index, value);
+        break;
+
+    case MIIMCFG ... MIIMIND:
+        etsec_write_miim(etsec, reg, reg_index, value);
+        break;
+
+    default:
+        /* Default handling */
+        switch (reg->access) {
+
+        case ACC_RW:
+        case ACC_WO:
+            reg->value = value;
+            break;
+
+        case ACC_W1C:
+            reg->value &= ~value;
+            break;
+
+        case ACC_RO:
+        default:
+            /* Read Only or Unknown register */
+            break;
+        }
+    }
+
+    DPRINTF("Write 0x%08x @ 0x" TARGET_FMT_plx
+            " val:0x%08x->0x%08x : %s (%s)\n",
+            (unsigned int)value, addr, before, reg->value,
+            reg->name, reg->desc);
+}
+
+static const MemoryRegionOps etsec_ops = {
+    .read = etsec_read,
+    .write = etsec_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+    .impl = {
+        .min_access_size = 4,
+        .max_access_size = 4,
+    },
+};
+
+static void etsec_timer_hit(void *opaque)
+{
+    eTSEC *etsec = opaque;
+
+    ptimer_stop(etsec->ptimer);
+
+    if (!(etsec->regs[DMACTRL].value & DMACTRL_WOP)) {
+
+        if (!(etsec->regs[DMACTRL].value & DMACTRL_GTS)) {
+            etsec_walk_tx_ring(etsec, 0);
+        }
+        ptimer_set_count(etsec->ptimer, 1);
+        ptimer_run(etsec->ptimer, 1);
+    }
+}
+
+static void etsec_reset(DeviceState *d)
+{
+    eTSEC *etsec = ETSEC_COMMON(d);
+    int i = 0;
+    int reg_index = 0;
+
+    /* Default value for all registers */
+    for (i = 0; i < ETSEC_REG_NUMBER; i++) {
+        etsec->regs[i].name   = "Reserved";
+        etsec->regs[i].desc   = "";
+        etsec->regs[i].access = ACC_UNKNOWN;
+        etsec->regs[i].value  = 0x00000000;
+    }
+
+    /* Set-up known registers */
+    for (i = 0; eTSEC_registers_def[i].name != NULL; i++) {
+
+        reg_index = eTSEC_registers_def[i].offset / 4;
+
+        etsec->regs[reg_index].name   = eTSEC_registers_def[i].name;
+        etsec->regs[reg_index].desc   = eTSEC_registers_def[i].desc;
+        etsec->regs[reg_index].access = eTSEC_registers_def[i].access;
+        etsec->regs[reg_index].value  = eTSEC_registers_def[i].reset;
+    }
+
+    etsec->tx_buffer     = NULL;
+    etsec->tx_buffer_len = 0;
+    etsec->rx_buffer     = NULL;
+    etsec->rx_buffer_len = 0;
+
+    etsec->phy_status =
+        MII_SR_EXTENDED_CAPS    | MII_SR_LINK_STATUS   | MII_SR_AUTONEG_CAPS  |
+        MII_SR_AUTONEG_COMPLETE | MII_SR_PREAMBLE_SUPPRESS |
+        MII_SR_EXTENDED_STATUS  | MII_SR_100T2_HD_CAPS | MII_SR_100T2_FD_CAPS |
+        MII_SR_10T_HD_CAPS      | MII_SR_10T_FD_CAPS   | MII_SR_100X_HD_CAPS  |
+        MII_SR_100X_FD_CAPS     | MII_SR_100T4_CAPS;
+}
+
+static void etsec_cleanup(NetClientState *nc)
+{
+    /* qemu_log("eTSEC cleanup\n"); */
+}
+
+static int etsec_can_receive(NetClientState *nc)
+{
+    eTSEC *etsec = qemu_get_nic_opaque(nc);
+
+    return etsec->rx_buffer_len == 0;
+}
+
+static ssize_t etsec_receive(NetClientState *nc,
+                             const uint8_t  *buf,
+                             size_t          size)
+{
+    eTSEC *etsec = qemu_get_nic_opaque(nc);
+
+#if defined(HEX_DUMP)
+    fprintf(stderr, "%s receive size:%d\n", etsec->nic->nc.name, size);
+    qemu_hexdump(buf, stderr, "", size);
+#endif
+    etsec_rx_ring_write(etsec, buf, size);
+    return size;
+}
+
+
+static void etsec_set_link_status(NetClientState *nc)
+{
+    eTSEC *etsec = qemu_get_nic_opaque(nc);
+
+    etsec_miim_link_status(etsec, nc);
+}
+
+static NetClientInfo net_etsec_info = {
+    .type = NET_CLIENT_OPTIONS_KIND_NIC,
+    .size = sizeof(NICState),
+    .can_receive = etsec_can_receive,
+    .receive = etsec_receive,
+    .cleanup = etsec_cleanup,
+    .link_status_changed = etsec_set_link_status,
+};
+
+static void etsec_realize(DeviceState *dev, Error **errp)
+{
+    eTSEC        *etsec = ETSEC_COMMON(dev);
+
+    etsec->nic = qemu_new_nic(&net_etsec_info, &etsec->conf,
+                              object_get_typename(OBJECT(dev)), dev->id, etsec);
+    qemu_format_nic_info_str(qemu_get_queue(etsec->nic), etsec->conf.macaddr.a);
+
+
+    etsec->bh     = qemu_bh_new(etsec_timer_hit, etsec);
+    etsec->ptimer = ptimer_init(etsec->bh);
+    ptimer_set_freq(etsec->ptimer, 100);
+}
+
+static void etsec_instance_init(Object *obj)
+{
+    eTSEC        *etsec = ETSEC_COMMON(obj);
+    SysBusDevice *sbd   = SYS_BUS_DEVICE(obj);
+
+    memory_region_init_io(&etsec->io_area, OBJECT(etsec), &etsec_ops, etsec,
+                          "eTSEC", 0x1000);
+    sysbus_init_mmio(sbd, &etsec->io_area);
+
+    sysbus_init_irq(sbd, &etsec->tx_irq);
+    sysbus_init_irq(sbd, &etsec->rx_irq);
+    sysbus_init_irq(sbd, &etsec->err_irq);
+}
+
+static Property etsec_properties[] = {
+    DEFINE_NIC_PROPERTIES(eTSEC, conf),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void etsec_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->realize = etsec_realize;
+    dc->reset = etsec_reset;
+    dc->props = etsec_properties;
+}
+
+static TypeInfo etsec_info = {
+    .name                  = "eTSEC",
+    .parent                = TYPE_SYS_BUS_DEVICE,
+    .instance_size         = sizeof(eTSEC),
+    .class_init            = etsec_class_init,
+    .instance_init         = etsec_instance_init,
+};
+
+static void etsec_register_types(void)
+{
+    type_register_static(&etsec_info);
+}
+
+type_init(etsec_register_types)
+
+DeviceState *etsec_create(hwaddr         base,
+                          MemoryRegion * mr,
+                          NICInfo      * nd,
+                          qemu_irq       tx_irq,
+                          qemu_irq       rx_irq,
+                          qemu_irq       err_irq)
+{
+    DeviceState *dev;
+
+    dev = qdev_create(NULL, "eTSEC");
+    qdev_set_nic_properties(dev, nd);
+
+    if (qdev_init(dev)) {
+        return NULL;
+    }
+
+    sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, tx_irq);
+    sysbus_connect_irq(SYS_BUS_DEVICE(dev), 1, rx_irq);
+    sysbus_connect_irq(SYS_BUS_DEVICE(dev), 2, err_irq);
+
+    memory_region_add_subregion(mr, base,
+                                SYS_BUS_DEVICE(dev)->mmio[0].memory);
+
+    return dev;
+}

hw/net/fsl_etsec/etsec.h

+/*
+ * QEMU Freescale eTSEC Emulator
+ *
+ * Copyright (c) 2011-2013 AdaCore
+ *
+ * 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.
+ */
+#ifndef _ETSEC_H_
+#define _ETSEC_H_
+
+#include "hw/qdev.h"
+#include "hw/sysbus.h"
+#include "net/net.h"
+#include "hw/ptimer.h"
+
+/* Buffer Descriptors */
+
+typedef struct eTSEC_rxtx_bd {
+    uint16_t flags;
+    uint16_t length;
+    uint32_t bufptr;
+} eTSEC_rxtx_bd;
+
+#define BD_WRAP       (1 << 13)
+#define BD_INTERRUPT  (1 << 12)
+#define BD_LAST       (1 << 11)
+
+#define BD_TX_READY     (1 << 15)
+#define BD_TX_PADCRC    (1 << 14)
+#define BD_TX_TC        (1 << 10)
+#define BD_TX_PREDEF    (1 << 9)
+#define BD_TX_HFELC     (1 << 7)
+#define BD_TX_CFRL      (1 << 6)
+#define BD_TX_RC_MASK   0xF
+#define BD_TX_RC_OFFSET 0x2
+#define BD_TX_TOEUN     (1 << 1)
+#define BD_TX_TR        (1 << 0)
+
+#define BD_RX_EMPTY     (1 << 15)
+#define BD_RX_RO1       (1 << 14)
+#define BD_RX_FIRST     (1 << 10)
+#define BD_RX_MISS      (1 << 8)
+#define BD_RX_BROADCAST (1 << 7)
+#define BD_RX_MULTICAST (1 << 6)
+#define BD_RX_LG        (1 << 5)
+#define BD_RX_NO        (1 << 4)
+#define BD_RX_SH        (1 << 3)
+#define BD_RX_CR        (1 << 2)
+#define BD_RX_OV        (1 << 1)
+#define BD_RX_TR        (1 << 0)
+
+/* Tx FCB flags */
+#define FCB_TX_VLN     (1 << 7)
+#define FCB_TX_IP      (1 << 6)
+#define FCB_TX_IP6     (1 << 5)
+#define FCB_TX_TUP     (1 << 4)
+#define FCB_TX_UDP     (1 << 3)
+#define FCB_TX_CIP     (1 << 2)
+#define FCB_TX_CTU     (1 << 1)
+#define FCB_TX_NPH     (1 << 0)
+
+/* PHY Status Register */
+#define MII_SR_EXTENDED_CAPS     0x0001    /* Extended register capabilities */
+#define MII_SR_JABBER_DETECT     0x0002    /* Jabber Detected */
+#define MII_SR_LINK_STATUS       0x0004    /* Link Status 1 = link */
+#define MII_SR_AUTONEG_CAPS      0x0008    /* Auto Neg Capable */
+#define MII_SR_REMOTE_FAULT      0x0010    /* Remote Fault Detect */
+#define MII_SR_AUTONEG_COMPLETE  0x0020    /* Auto Neg Complete */
+#define MII_SR_PREAMBLE_SUPPRESS 0x0040    /* Preamble may be suppressed */
+#define MII_SR_EXTENDED_STATUS   0x0100    /* Ext. status info in Reg 0x0F */
+#define MII_SR_100T2_HD_CAPS     0x0200    /* 100T2 Half Duplex Capable */
+#define MII_SR_100T2_FD_CAPS     0x0400    /* 100T2 Full Duplex Capable */
+#define MII_SR_10T_HD_CAPS       0x0800    /* 10T   Half Duplex Capable */
+#define MII_SR_10T_FD_CAPS       0x1000    /* 10T   Full Duplex Capable */
+#define MII_SR_100X_HD_CAPS      0x2000    /* 100X  Half Duplex Capable */
+#define MII_SR_100X_FD_CAPS      0x4000    /* 100X  Full Duplex Capable */
+#define MII_SR_100T4_CAPS        0x8000    /* 100T4 Capable */
+
+/* eTSEC */
+
+/* Number of register in the device */
+#define ETSEC_REG_NUMBER 1024
+
+typedef struct eTSEC_Register {
+    const char *name;
+    const char *desc;
+    uint32_t    access;
+    uint32_t    value;
+} eTSEC_Register;
+
+typedef struct eTSEC {
+    SysBusDevice  busdev;
+
+    MemoryRegion  io_area;
+
+    eTSEC_Register regs[ETSEC_REG_NUMBER];
+
+    NICState *nic;
+    NICConf   conf;
+
+    /* Tx */
+
+    uint8_t       *tx_buffer;
+    uint32_t       tx_buffer_len;
+    eTSEC_rxtx_bd  first_bd;
+
+    /* Rx */
+
+    uint8_t       *rx_buffer;
+    uint32_t       rx_buffer_len;
+    uint32_t       rx_remaining_data;
+    uint8_t        rx_first_in_frame;
+    uint8_t        rx_fcb_size;
+    eTSEC_rxtx_bd  rx_first_bd;
+    uint8_t        rx_fcb[10];
+    uint32_t       rx_padding;
+
+    /* IRQs */
+    qemu_irq     tx_irq;
+    qemu_irq     rx_irq;
+    qemu_irq     err_irq;
+
+
+    uint16_t phy_status;
+    uint16_t phy_control;
+
+    /* Polling */
+    QEMUBH *bh;
+    struct ptimer_state *ptimer;
+
+} eTSEC;
+
+#define TYPE_ETSEC_COMMON "eTSEC"
+#define ETSEC_COMMON(obj) \
+     OBJECT_CHECK(eTSEC, (obj), TYPE_ETSEC_COMMON)
+
+#define eTSEC_TRANSMIT 1
+#define eTSEC_RECEIVE  2
+
+DeviceState *etsec_create(hwaddr        base,
+                          MemoryRegion *mr,
+                          NICInfo      *nd,
+                          qemu_irq      tx_irq,
+                          qemu_irq      rx_irq,
+                          qemu_irq      err_irq);
+
+void etsec_walk_tx_ring(eTSEC *etsec, int ring_nbr);
+void etsec_walk_rx_ring(eTSEC *etsec, int ring_nbr);
+void etsec_rx_ring_write(eTSEC *etsec, const uint8_t *buf, size_t size);
+
+void etsec_write_miim(eTSEC          *etsec,
+                      eTSEC_Register *reg,
+                      uint32_t        reg_index,
+                      uint32_t        value);
+
+void etsec_miim_link_status(eTSEC *etsec, NetClientState *nc);
+
+#endif /* ! _ETSEC_H_ */

hw/net/fsl_etsec/miim.c

+/*
+ * QEMU Freescale eTSEC Emulator
+ *
+ * Copyright (c) 2011-2013 AdaCore
+ *
+ * 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 "etsec.h"
+#include "registers.h"
+
+/* #define DEBUG_MIIM */
+
+#define MIIM_CONTROL    0
+#define MIIM_STATUS     1
+#define MIIM_PHY_ID_1   2
+#define MIIM_PHY_ID_2   3
+#define MIIM_T2_STATUS  10
+#define MIIM_EXT_STATUS 15
+
+static void miim_read_cycle(eTSEC *etsec)
+{
+    uint8_t  phy;
+    uint8_t  addr;
+    uint16_t value;
+
+    phy  = (etsec->regs[MIIMADD].value >> 8) & 0x1F;
+    (void)phy; /* Unreferenced */
+    addr = etsec->regs[MIIMADD].value & 0x1F;
+
+    switch (addr) {
+    case MIIM_CONTROL:
+        value = etsec->phy_control;
+        break;
+    case MIIM_STATUS:
+        value = etsec->phy_status;
+        break;
+    case MIIM_T2_STATUS:
+        value = 0x1800;           /* Local and remote receivers OK */
+        break;
+    default:
+        value = 0x0;
+        break;
+    };
+
+#ifdef DEBUG_MIIM
+    qemu_log("%s phy:%d addr:0x%x value:0x%x\n", __func__, phy, addr, value);
+#endif
+
+    etsec->regs[MIIMSTAT].value = value;
+}
+
+static void miim_write_cycle(eTSEC *etsec)
+{
+    uint8_t  phy;
+    uint8_t  addr;
+    uint16_t value;
+
+    phy   = (etsec->regs[MIIMADD].value >> 8) & 0x1F;
+    (void)phy; /* Unreferenced */
+    addr  = etsec->regs[MIIMADD].value & 0x1F;
+    value = etsec->regs[MIIMCON].value & 0xffff;
+
+#ifdef DEBUG_MIIM
+    qemu_log("%s phy:%d addr:0x%x value:0x%x\n", __func__, phy, addr, value);
+#endif
+
+    switch (addr) {
+    case MIIM_CONTROL:
+        etsec->phy_control = value & ~(0x8100);
+        break;
+    default:
+        break;
+    };
+}
+
+void etsec_write_miim(eTSEC          *etsec,
+                      eTSEC_Register *reg,
+                      uint32_t        reg_index,
+                      uint32_t        value)
+{
+
+    switch (reg_index) {
+
+    case MIIMCOM:
+        /* Read and scan cycle */
+
+        if ((!(reg->value & MIIMCOM_READ)) && (value & MIIMCOM_READ)) {
+            /* Read */
+            miim_read_cycle(etsec);
+        }
+        reg->value = value;
+        break;
+
+    case MIIMCON:
+        reg->value = value & 0xffff;
+        miim_write_cycle(etsec);
+        break;
+
+    default:
+        /* Default handling */
+        switch (reg->access) {
+
+        case ACC_RW:
+        case ACC_WO:
+            reg->value = value;
+            break;
+
+        case ACC_W1C:
+            reg->value &= ~value;
+            break;
+
+        case ACC_RO:
+        default:
+            /* Read Only or Unknown register */
+            break;
+        }
+    }
+
+}
+
+void etsec_miim_link_status(eTSEC *etsec, NetClientState *nc)
+{
+    /* Set link status */
+    if (nc->link_down) {
+        etsec->phy_status &= ~MII_SR_LINK_STATUS;
+    } else {
+        etsec->phy_status |= MII_SR_LINK_STATUS;
+    }
+}

hw/net/fsl_etsec/registers.h

+/*
+ * QEMU Freescale eTSEC Emulator
+ *
+ * Copyright (c) 2011-2013 AdaCore
+ *
+ * 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.
+ */
+#ifndef _ETSEC_REGISTERS_H_
+#define _ETSEC_REGISTERS_H_
+
+#include <stdint.h>
+
+enum eTSEC_Register_Access_Type {
+    ACC_RW      = 1,            /* Read/Write */
+    ACC_RO      = 2,            /* Read Only */
+    ACC_WO      = 3,            /* Write Only */
+    ACC_W1C     = 4,            /* Write 1 to clear */
+    ACC_UNKNOWN = 5             /* Unknown register*/
+};
+
+typedef struct eTSEC_Register_Definition {
+    uint32_t                         offset;
+    const char                      *name;
+    const char                      *desc;
+    enum eTSEC_Register_Access_Type  access;
+    uint32_t                         reset;
+} eTSEC_Register_Definition;
+
+extern const eTSEC_Register_Definition eTSEC_registers_def[];
+
+#define DMACTRL_LE  (1 << 15)
+#define DMACTRL_GRS (1 <<  4)
+#define DMACTRL_GTS (1 <<  3)
+#define DMACTRL_WOP (1 <<  0)
+
+#define IEVENT_PERR  (1 <<  0)
+#define IEVENT_DPE   (1 <<  1)
+#define IEVENT_FIQ   (1 <<  2)
+#define IEVENT_FIR   (1 <<  3)
+#define IEVENT_FGPI  (1 <<  4)
+#define IEVENT_RXF   (1 <<  7)
+#define IEVENT_GRSC  (1 <<  8)
+#define IEVENT_MMRW  (1 <<  9)
+#define IEVENT_MMRD  (1 << 10)
+#define IEVENT_MAG   (1 << 11)
+#define IEVENT_RXB   (1 << 15)
+#define IEVENT_XFUN  (1 << 16)
+#define IEVENT_CRL   (1 << 17)
+#define IEVENT_LC    (1 << 18)
+#define IEVENT_TXF   (1 << 20)
+#define IEVENT_TXB   (1 << 21)
+#define IEVENT_TXE   (1 << 22)
+#define IEVENT_TXC   (1 << 23)
+#define IEVENT_BABT  (1 << 24)
+#define IEVENT_GTSC  (1 << 25)
+#define IEVENT_MSRO  (1 << 26)
+#define IEVENT_EBERR (1 << 28)
+#define IEVENT_BSY   (1 << 29)
+#define IEVENT_RXC   (1 << 30)
+#define IEVENT_BABR  (1 << 31)
+
+#define IMASK_RXFEN  (1 <<  7)
+#define IMASK_GRSCEN (1 <<  8)
+#define IMASK_RXBEN  (1 << 15)
+#define IMASK_TXFEN  (1 << 20)
+#define IMASK_TXBEN  (1 << 21)
+#define IMASK_GTSCEN (1 << 25)
+
+#define MACCFG1_TX_EN  (1 << 0)
+#define MACCFG1_RX_EN  (1 << 2)
+
+#define MACCFG2_CRC_EN  (1 << 1)
+#define MACCFG2_PADCRC  (1 << 2)
+
+#define MIIMCOM_READ (1 << 0)
+#define MIIMCOM_SCAN (1 << 1)
+
+#define RCTRL_PRSDEP_MASK   (0x3)
+#define RCTRL_PRSDEP_OFFSET (6)
+#define RCTRL_RSF           (1 << 2)
+
+/* Index of each register */
+
+#define TSEC_ID      (0x000 / 4)
+#define TSEC_ID2     (0x004 / 4)
+#define IEVENT       (0x010 / 4)
+#define IMASK        (0x014 / 4)
+#define EDIS         (0x018 / 4)
+#define ECNTRL       (0x020 / 4)
+#define PTV          (0x028 / 4)
+#define DMACTRL      (0x02C / 4)
+#define TBIPA        (0x030 / 4)
+#define TCTRL        (0x100 / 4)
+#define TSTAT        (0x104 / 4)
+#define DFVLAN       (0x108 / 4)
+#define TXIC         (0x110 / 4)
+#define TQUEUE       (0x114 / 4)
+#define TR03WT       (0x140 / 4)
+#define TR47WT       (0x144 / 4)
+#define TBDBPH       (0x180 / 4)
+#define TBPTR0       (0x184 / 4)
+#define TBPTR1       (0x18C / 4)
+#define TBPTR2       (0x194 / 4)
+#define TBPTR3       (0x19C / 4)
+#define TBPTR4       (0x1A4 / 4)
+#define TBPTR5       (0x1AC / 4)
+#define TBPTR6       (0x1B4 / 4)
+#define TBPTR7       (0x1BC / 4)
+#define TBASEH       (0x200 / 4)
+#define TBASE0       (0x204 / 4)
+#define TBASE1       (0x20C / 4)
+#define TBASE2       (0x214 / 4)
+#define TBASE3       (0x21C / 4)
+#define TBASE4       (0x224 / 4)
+#define TBASE5       (0x22C / 4)
+#define TBASE6       (0x234 / 4)
+#define TBASE7       (0x23C / 4)
+#define TMR_TXTS1_ID (0x280 / 4)
+#define TMR_TXTS2_ID (0x284 / 4)
+#define TMR_TXTS1_H  (0x2C0 / 4)
+#define TMR_TXTS1_L  (0x2C4 / 4)
+#define TMR_TXTS2_H  (0x2C8 / 4)
+#define TMR_TXTS2_L  (0x2CC / 4)
+#define RCTRL        (0x300 / 4)
+#define RSTAT        (0x304 / 4)
+#define RXIC         (0x310 / 4)
+#define RQUEUE       (0x314 / 4)
+#define RBIFX        (0x330 / 4)
+#define RQFAR        (0x334 / 4)
+#define RQFCR        (0x338 / 4)
+#define RQFPR        (0x33C / 4)
+#define MRBLR        (0x340 / 4)
+#define RBDBPH       (0x380 / 4)
+#define RBPTR0       (0x384 / 4)
+#define RBPTR1       (0x38C / 4)
+#define RBPTR2       (0x394 / 4)
+#define RBPTR3       (0x39C / 4)
+#define RBPTR4       (0x3A4 / 4)
+#define RBPTR5       (0x3AC / 4)
+#define RBPTR6       (0x3B4 / 4)
+#define RBPTR7       (0x3BC / 4)
+#define RBASEH       (0x400 / 4)
+#define RBASE0       (0x404 / 4)
+#define RBASE1       (0x40C / 4)
+#define RBASE2       (0x414 / 4)
+#define RBASE3       (0x41C / 4)
+#define RBASE4       (0x424 / 4)
+#define RBASE5       (0x42C / 4)
+#define RBASE6       (0x434 / 4)
+#define RBASE7       (0x43C / 4)
+#define TMR_RXTS_H   (0x4C0 / 4)
+#define TMR_RXTS_L   (0x4C4 / 4)
+#define MACCFG1      (0x500 / 4)
+#define MACCFG2      (0x504 / 4)
+#define IPGIFG       (0x508 / 4)
+#define HAFDUP       (0x50C / 4)
+#define MAXFRM       (0x510 / 4)
+#define MIIMCFG      (0x520 / 4)
+#define MIIMCOM      (0x524 / 4)
+#define MIIMADD      (0x528 / 4)
+#define MIIMCON      (0x52C / 4)
+#define MIIMSTAT     (0x530 / 4)
+#define MIIMIND      (0x534 / 4)
+#define IFSTAT       (0x53C / 4)
+#define MACSTNADDR1  (0x540 / 4)
+#define MACSTNADDR2  (0x544 / 4)
+#define MAC01ADDR1   (0x548 / 4)
+#define MAC01ADDR2   (0x54C / 4)
+#define MAC02ADDR1   (0x550 / 4)
+#define MAC02ADDR2   (0x554 / 4)
+#define MAC03ADDR1   (0x558 / 4)
+#define MAC03ADDR2   (0x55C / 4)
+#define MAC04ADDR1   (0x560 / 4)
+#define MAC04ADDR2   (0x564 / 4)
+#define MAC05ADDR1   (0x568 / 4)
+#define MAC05ADDR2   (0x56C / 4)
+#define MAC06ADDR1   (0x570 / 4)
+#define MAC06ADDR2   (0x574 / 4)
+#define MAC07ADDR1   (0x578 / 4)
+#define MAC07ADDR2   (0x57C / 4)
+#define MAC08ADDR1   (0x580 / 4)
+#define MAC08ADDR2   (0x584 / 4)
+#define MAC09ADDR1   (0x588 / 4)
+#define MAC09ADDR2   (0x58C / 4)
+#define MAC10ADDR1   (0x590 / 4)
+#define MAC10ADDR2   (0x594 / 4)
+#define MAC11ADDR1   (0x598 / 4)
+#define MAC11ADDR2   (0x59C / 4)
+#define MAC12ADDR1   (0x5A0 / 4)
+#define MAC12ADDR2   (0x5A4 / 4)
+#define MAC13ADDR1   (0x5A8 / 4)
+#define MAC13ADDR2   (0x5AC / 4)
+#define MAC14ADDR1   (0x5B0 / 4)
+#define MAC14ADDR2   (0x5B4 / 4)
+#define MAC15ADDR1   (0x5B8 / 4)
+#define MAC15ADDR2   (0x5BC / 4)
+#define TR64         (0x680 / 4)
+#define TR127        (0x684 / 4)
+#define TR255        (0x688 / 4)
+#define TR511        (0x68C / 4)
+#define TR1K         (0x690 / 4)
+#define TRMAX        (0x694 / 4)
+#define TRMGV        (0x698 / 4)
+#define RBYT         (0x69C / 4)
+#define RPKT         (0x6A0 / 4)
+#define RFCS         (0x6A4 / 4)
+#define RMCA         (0x6A8 / 4)
+#define RBCA         (0x6AC / 4)
+#define RXCF         (0x6B0 / 4)
+#define RXPF         (0x6B4 / 4)
+#define RXUO         (0x6B8 / 4)
+#define RALN         (0x6BC / 4)
+#define RFLR         (0x6C0 / 4)
+#define RCDE         (0x6C4 / 4)
+#define RCSE         (0x6C8 / 4)
+#define RUND         (0x6CC / 4)
+#define ROVR         (0x6D0 / 4)
+#define RFRG         (0x6D4 / 4)
+#define RJBR         (0x6D8 / 4)
+#define RDRP         (0x6DC / 4)
+#define TBYT         (0x6E0 / 4)
+#define TPKT         (0x6E4 / 4)
+#define TMCA         (0x6E8 / 4)
+#define TBCA         (0x6EC / 4)
+#define TXPF         (0x6F0 / 4)
+#define TDFR         (0x6F4 / 4)
+#define TEDF         (0x6F8 / 4)
+#define TSCL         (0x6FC / 4)
+#define TMCL         (0x700 / 4)
+#define TLCL         (0x704 / 4)
+#define TXCL         (0x708 / 4)
+#define TNCL         (0x70C / 4)
+#define TDRP         (0x714 / 4)
+#define TJBR         (0x718 / 4)
+#define TFCS         (0x71C / 4)
+#define TXCF         (0x720 / 4)
+#define TOVR         (0x724 / 4)
+#define TUND         (0x728 / 4)
+#define TFRG         (0x72C / 4)
+#define CAR1         (0x730 / 4)
+#define CAR2         (0x734 / 4)
+#define CAM1         (0x738 / 4)
+#define CAM2         (0x73C / 4)
+#define RREJ         (0x740 / 4)
+#define IGADDR0      (0x800 / 4)
+#define IGADDR1      (0x804 / 4)
+#define IGADDR2      (0x808 / 4)
+#define IGADDR3      (0x80C / 4)
+#define IGADDR4      (0x810 / 4)
+#define IGADDR5      (0x814 / 4)
+#define IGADDR6      (0x818 / 4)
+#define IGADDR7      (0x81C / 4)
+#define GADDR0       (0x880 / 4)
+#define GADDR1       (0x884 / 4)
+#define GADDR2       (0x888 / 4)
+#define GADDR3       (0x88C / 4)
+#define GADDR4       (0x890 / 4)
+#define GADDR5       (0x894 / 4)
+#define GADDR6       (0x898 / 4)
+#define GADDR7       (0x89C / 4)
+#define ATTR         (0xBF8 / 4)
+#define ATTRELI      (0xBFC / 4)
+#define RQPRM0       (0xC00 / 4)
+#define RQPRM1       (0xC04 / 4)
+#define RQPRM2       (0xC08 / 4)
+#define RQPRM3       (0xC0C / 4)
+#define RQPRM4       (0xC10 / 4)
+#define RQPRM5       (0xC14 / 4)
+#define RQPRM6       (0xC18 / 4)
+#define RQPRM7       (0xC1C / 4)
+#define RFBPTR0      (0xC44 / 4)
+#define RFBPTR1      (0xC4C / 4)
+#define RFBPTR2      (0xC54 / 4)
+#define RFBPTR3      (0xC5C / 4)
+#define RFBPTR4      (0xC64 / 4)
+#define RFBPTR5      (0xC6C / 4)
+#define RFBPTR6      (0xC74 / 4)
+#define RFBPTR7      (0xC7C / 4)
+#define TMR_CTRL     (0xE00 / 4)
+#define TMR_TEVENT   (0xE04 / 4)
+#define TMR_TEMASK   (0xE08 / 4)
+#define TMR_PEVENT   (0xE0C / 4)
+#define TMR_PEMASK   (0xE10 / 4)
+#define TMR_STAT     (0xE14 / 4)
+#define TMR_CNT_H    (0xE18 / 4)
+#define TMR_CNT_L    (0xE1C / 4)
+#define TMR_ADD      (0xE20 / 4)
+#define TMR_ACC      (0xE24 / 4)
+#define TMR_PRSC     (0xE28 / 4)
+#define TMROFF_H     (0xE30 / 4)
+#define TMROFF_L     (0xE34 / 4)
+#define TMR_ALARM1_H (0xE40 / 4)
+#define TMR_ALARM1_L (0xE44 / 4)
+#define TMR_ALARM2_H (0xE48 / 4)
+#define TMR_ALARM2_L (0xE4C / 4)
+#define TMR_FIPER1   (0xE80 / 4)
+#define TMR_FIPER2   (0xE84 / 4)
+#define TMR_FIPER3   (0xE88 / 4)
+#define TMR_ETTS1_H  (0xEA0 / 4)
+#define TMR_ETTS1_L  (0xEA4 / 4)
+#define TMR_ETTS2_H  (0xEA8 / 4)
+#define TMR_ETTS2_L  (0xEAC / 4)
+
+#endif /* ! _ETSEC_REGISTERS_H_ */