@@ -35,6 +35,7 @@
#define MSF2_TIMER_BASE 0x40004000
#define MSF2_SYSREG_BASE 0x40038000
+#define MSF2_EMAC_BASE 0x40041000
#define ENVM_BASE_ADDRESS 0x60000000
@@ -55,6 +56,7 @@ static const uint32_t uart_addr[MSF2_NUM_UARTS] = { 0x40000000 , 0x40010000 };
static const int spi_irq[MSF2_NUM_SPIS] = { 2, 3 };
static const int uart_irq[MSF2_NUM_UARTS] = { 10, 11 };
static const int timer_irq[MSF2_NUM_TIMERS] = { 14, 15 };
+static const int emac_irq[MSF2_NUM_EMACS] = { 12 };
static void do_sys_reset(void *opaque, int n, int level)
{
@@ -82,6 +84,13 @@ static void m2sxxx_soc_initfn(Object *obj)
TYPE_MSS_SPI);
qdev_set_parent_bus(DEVICE(&s->spi[i]), sysbus_get_default());
}
+
+ object_initialize(&s->emac, sizeof(s->emac), TYPE_MSS_EMAC);
+ qdev_set_parent_bus(DEVICE(&s->emac), sysbus_get_default());
+ if (nd_table[0].used) {
+ qemu_check_nic_model(&nd_table[0], TYPE_MSS_EMAC);
+ qdev_set_nic_properties(DEVICE(&s->emac), &nd_table[0]);
+ }
}
static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
@@ -192,6 +201,17 @@ static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
g_free(bus_name);
}
+ dev = DEVICE(&s->emac);
+ object_property_set_bool(OBJECT(&s->emac), true, "realized", &err);
+ if (err != NULL) {
+ error_propagate(errp, err);
+ return;
+ }
+ busdev = SYS_BUS_DEVICE(dev);
+ sysbus_mmio_map(busdev, 0, MSF2_EMAC_BASE);
+ sysbus_connect_irq(busdev, 0,
+ qdev_get_gpio_in(armv7m, emac_irq[0]));
+
/* Below devices are not modelled yet. */
create_unimplemented_device("i2c_0", 0x40002000, 0x1000);
create_unimplemented_device("dma", 0x40003000, 0x1000);
@@ -202,7 +222,6 @@ static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
create_unimplemented_device("can", 0x40015000, 0x1000);
create_unimplemented_device("rtc", 0x40017000, 0x1000);
create_unimplemented_device("apb_config", 0x40020000, 0x10000);
- create_unimplemented_device("emac", 0x40041000, 0x1000);
create_unimplemented_device("usb", 0x40043000, 0x1000);
}
@@ -48,3 +48,4 @@ common-obj-$(CONFIG_ROCKER) += rocker/rocker.o rocker/rocker_fp.o \
obj-$(call lnot,$(CONFIG_ROCKER)) += rocker/qmp-norocker.o
common-obj-$(CONFIG_CAN_BUS) += can/
+common-obj-$(CONFIG_MSF2) += mss-emac.o
new file mode 100644
@@ -0,0 +1,544 @@
+/*
+ * QEMU model of the Smartfusion2 Ethernet MAC.
+ *
+ * Copyright (c) 2018 Subbaraya Sundeep <sundeep.lkml@gmail.com>.
+ *
+ * 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 "qemu/osdep.h"
+#include "qemu-common.h"
+#include "qemu/log.h"
+#include "hw/net/mss-emac.h"
+#include "hw/net/mii.h"
+
+#define R_CFG1 (0x0 / 4)
+#define R_CFG2 (0x4 / 4)
+#define R_IFG (0x8 / 4)
+#define R_HALF_DUPLEX (0xc / 4)
+#define R_FRM_LEN (0x10 / 4)
+#define R_MII_CFG (0x20 / 4)
+#define R_MII_CMD (0x24 / 4)
+#define R_MII_ADDR (0x28 / 4)
+#define R_MII_CTL (0x2c / 4)
+#define R_MII_STS (0x30 / 4)
+#define R_MII_IND (0x34 / 4)
+#define R_STA1 (0x40 / 4)
+#define R_STA2 (0x44 / 4)
+#define R_FIFO_CFG0 (0x48 / 4)
+
+#define R_DMA_TX_CTL (0x180 / 4)
+#define R_DMA_TX_DESC (0x184 / 4)
+#define R_DMA_TX_STATUS (0x188 / 4)
+#define R_DMA_RX_CTL (0x18c / 4)
+#define R_DMA_RX_DESC (0x190 / 4)
+#define R_DMA_RX_STATUS (0x194 / 4)
+#define R_DMA_IRQ_MASK (0x198 / 4)
+#define R_DMA_IRQ (0x19c / 4)
+
+#define R_DMA_PKTCNT_MASK 0xFF0000
+#define R_DMA_PKTCNT_SHIFT 16
+#define R_DMA_PKT_TXRX (1 << 0)
+#define DMA_TX_UNDERRUN (1 << 1)
+#define DMA_RX_OVERFLOW (1 << 2)
+
+#define EMPTY_MASK (1 << 31)
+#define PKT_SIZE 0x7FF
+
+#define CFG1_RESET (1 << 31)
+
+#define FIFO_CFG0_FTFENRPLY (1 << 20)
+#define FIFO_CFG0_STFENRPLY (1 << 19)
+#define FIFO_CFG0_FRFENRPLY (1 << 18)
+#define FIFO_CFG0_SRFENRPLY (1 << 17)
+#define FIFO_CFG0_WTMENRPLY (1 << 16)
+#define FIFO_CFG0_FTFENREQ (1 << 12)
+#define FIFO_CFG0_STFENREQ (1 << 11)
+#define FIFO_CFG0_FRFENREQ (1 << 10)
+#define FIFO_CFG0_SRFENREQ (1 << 9)
+#define FIFO_CFG0_WTMENREQ (1 << 8)
+
+#define DMA_TX_CTL_EN (1 << 0)
+#define DMA_RX_CTL_EN (1 << 0)
+
+#define MII_CMD_READ (1 << 0)
+
+/* We emulate PHY at address 0x1 */
+#define PHYADDR 0x1
+#define MII_ADDR_MASK 0x1F
+#define PHY_ADDR_SHIFT 8
+
+typedef struct {
+ uint32_t PktAddr;
+ uint32_t PktSize;
+ uint32_t Next;
+} EmacDesc;
+
+static uint32_t emac_get_isr(MSSEmacState *s)
+{
+ uint32_t ier = s->regs[R_DMA_IRQ_MASK];
+ uint32_t tx = s->regs[R_DMA_TX_STATUS] & 0xF;
+ uint32_t rx = s->regs[R_DMA_RX_STATUS] & 0xF;
+ uint32_t isr = (rx << 4) | tx;
+
+ s->regs[R_DMA_IRQ] = ier & isr;
+ return s->regs[R_DMA_IRQ];
+}
+
+static void emac_update_irq(MSSEmacState *s)
+{
+ bool intr = !!emac_get_isr(s);
+
+ qemu_set_irq(s->irq, intr);
+}
+
+static void emac_load_desc(EmacDesc *d, hwaddr desc)
+{
+ cpu_physical_memory_read(desc, d, sizeof *d);
+ /* Convert from LE into host endianness. */
+ d->PktAddr = le32_to_cpu(d->PktAddr);
+ d->PktSize = le32_to_cpu(d->PktSize);
+ d->Next = le32_to_cpu(d->Next);
+}
+
+static void emac_store_desc(EmacDesc *d, hwaddr desc)
+{
+ /* Convert from host endianness into LE. */
+ d->PktAddr = cpu_to_le32(d->PktAddr);
+ d->PktSize = cpu_to_le32(d->PktSize);
+ d->Next = cpu_to_le32(d->Next);
+ cpu_physical_memory_write(desc, d, sizeof *d);
+}
+
+static void mss_dma_tx(MSSEmacState *s)
+{
+ EmacDesc d;
+ uint8_t buf[2 * 1024];
+ int size;
+ uint8_t pktcnt;
+ uint32_t status;
+
+ while (1) {
+ emac_load_desc(&d, s->tx_desc);
+ if (d.PktSize & EMPTY_MASK) {
+ break;
+ }
+ size = d.PktSize & PKT_SIZE;
+ cpu_physical_memory_read(d.PktAddr, buf, size);
+ qemu_send_packet(qemu_get_queue(s->nic), buf, size);
+ d.PktSize |= EMPTY_MASK;
+ emac_store_desc(&d, s->tx_desc);
+ /* update sent packets count */
+ status = s->regs[R_DMA_TX_STATUS];
+ pktcnt = extract32(status, R_DMA_PKTCNT_SHIFT, 8);
+ pktcnt++;
+ s->regs[R_DMA_TX_STATUS] = ((status & ~R_DMA_PKTCNT_MASK) |
+ (pktcnt << R_DMA_PKTCNT_SHIFT));
+ s->regs[R_DMA_TX_STATUS] |= R_DMA_PKT_TXRX;
+ s->tx_desc = d.Next;
+ }
+ s->regs[R_DMA_TX_STATUS] |= DMA_TX_UNDERRUN;
+ s->regs[R_DMA_TX_CTL] &= ~DMA_TX_CTL_EN;
+}
+
+static void mss_phy_update_link(MSSEmacState *s)
+{
+ /* Autonegotiation status mirrors link status. */
+ if (qemu_get_queue(s->nic)->link_down) {
+ s->phy_regs[MII_BMSR] &= ~(MII_BMSR_AN_COMP |
+ MII_BMSR_LINK_ST);
+ } else {
+ s->phy_regs[MII_BMSR] |= (MII_BMSR_AN_COMP |
+ MII_BMSR_LINK_ST);
+ }
+}
+
+static void mss_phy_reset(MSSEmacState *s)
+{
+ memset(&s->phy_regs[0], 0, sizeof(s->phy_regs));
+ s->phy_regs[MII_BMSR] = MII_BMSR_AUTONEG | MII_BMSR_MFPS |
+ MII_BMSR_10T_HD | MII_BMSR_10T_FD |
+ MII_BMSR_100TX_HD | MII_BMSR_100TX_FD;
+ /* Micrel KSZ8051 PHY */
+ s->phy_regs[MII_PHYID1] = 0x0022;
+ s->phy_regs[MII_PHYID2] = 0x1550;
+
+ s->phy_regs[MII_ANAR] = MII_ANAR_CSMACD | MII_ANLPAR_10 |
+ MII_ANLPAR_10FD | MII_ANLPAR_TX | MII_ANLPAR_TXFD;
+ mss_phy_update_link(s);
+}
+
+static void write_to_phy(MSSEmacState *s)
+{
+ uint8_t reg_addr = s->regs[R_MII_ADDR] & MII_ADDR_MASK;
+ uint8_t phy_addr = (s->regs[R_MII_ADDR] >> PHY_ADDR_SHIFT) & MII_ADDR_MASK;
+ uint16_t data = s->regs[R_MII_CTL] & 0xFFFF;
+
+ if (phy_addr != PHYADDR) {
+ return;
+ }
+
+ switch (reg_addr) {
+ case MII_BMCR:
+ if (data & MII_BMCR_RESET) {
+ /* Phy reset */
+ mss_phy_reset(s);
+ data &= ~MII_BMCR_RESET;
+ }
+ if (data & MII_BMCR_AUTOEN) {
+ /* Complete autonegotiation immediately */
+ data &= ~MII_BMCR_AUTOEN;
+ s->phy_regs[MII_BMSR] |= MII_BMSR_AN_COMP;
+ }
+ break;
+ }
+
+ s->phy_regs[reg_addr] = data;
+}
+
+static uint16_t read_from_phy(MSSEmacState *s)
+{
+ uint8_t reg_addr = s->regs[R_MII_ADDR] & MII_ADDR_MASK;
+ uint8_t phy_addr = (s->regs[R_MII_ADDR] >> PHY_ADDR_SHIFT) & MII_ADDR_MASK;
+
+ if (phy_addr == PHYADDR) {
+ return s->phy_regs[reg_addr];
+ } else {
+ return 0xFFFF;
+ }
+}
+
+static void mss_emac_do_reset(MSSEmacState *s)
+{
+ memset(&s->regs[0], 0, sizeof(s->regs));
+ s->regs[R_CFG1] = 0x80000000;
+ s->regs[R_CFG2] = 0x00007000;
+ s->regs[R_IFG] = 0x40605060;
+ s->regs[R_HALF_DUPLEX] = 0x00A1F037;
+ s->regs[R_FRM_LEN] = 0x00000600;
+ s->rx_enabled = false;
+
+ mss_phy_reset(s);
+}
+
+static uint64_t emac_read(void *opaque, hwaddr addr, unsigned int size)
+{
+ MSSEmacState *s = opaque;
+ uint32_t r = 0;
+
+ addr >>= 2;
+
+ switch (addr) {
+ case R_DMA_IRQ:
+ r = emac_get_isr(s);
+ break;
+ default:
+ if (addr < ARRAY_SIZE(s->regs)) {
+ r = s->regs[addr];
+ } else {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Bad offset 0x%" HWADDR_PRIx "\n", __func__,
+ addr * 4);
+ return r;
+ }
+ break;
+ }
+ return r;
+}
+
+static void emac_write(void *opaque, hwaddr addr, uint64_t val64,
+ unsigned int size)
+{
+ MSSEmacState *s = opaque;
+ uint32_t value = val64;
+ uint8_t pktcnt;
+
+ addr >>= 2;
+ switch (addr) {
+ case R_DMA_TX_CTL:
+ s->regs[addr] = value;
+ if (value & DMA_TX_CTL_EN) {
+ mss_dma_tx(s);
+ }
+ break;
+ case R_CFG1:
+ if (value & CFG1_RESET) {
+ mss_emac_do_reset(s);
+ }
+ case R_FIFO_CFG0:
+ if (value & FIFO_CFG0_FTFENREQ) {
+ value |= FIFO_CFG0_FTFENRPLY;
+ }
+ if (value & FIFO_CFG0_STFENREQ) {
+ value |= FIFO_CFG0_STFENRPLY;
+ }
+ if (value & FIFO_CFG0_FRFENREQ) {
+ value |= FIFO_CFG0_FRFENRPLY;
+ }
+ if (value & FIFO_CFG0_SRFENREQ) {
+ value |= FIFO_CFG0_SRFENRPLY;
+ }
+ if (value & FIFO_CFG0_WTMENREQ) {
+ value |= FIFO_CFG0_WTMENRPLY;
+ }
+ s->regs[addr] = value;
+ break;
+ case R_DMA_TX_DESC:
+ if (value & 0x3) {
+ qemu_log_mask(LOG_GUEST_ERROR, "Tx Descriptor address should be"
+ " 32 bit aligned\n");
+ }
+ /* Ignore [1:0] bits */
+ s->regs[addr] = value & 0xFFFFFFFC;
+ s->tx_desc = s->regs[addr];
+ break;
+ case R_DMA_RX_DESC:
+ if (value & 0x3) {
+ qemu_log_mask(LOG_GUEST_ERROR, "Rx Descriptor address should be"
+ " 32 bit aligned\n");
+ }
+ /* Ignore [1:0] bits */
+ s->regs[addr] = value & 0xFFFFFFFC;
+ s->rx_desc = s->regs[addr];
+ break;
+ case R_DMA_TX_STATUS:
+ if (value & DMA_TX_UNDERRUN) {
+ s->regs[addr] &= ~DMA_TX_UNDERRUN;
+ }
+ if (value & R_DMA_PKT_TXRX) {
+ pktcnt = extract32(s->regs[addr], R_DMA_PKTCNT_SHIFT, 8);
+ pktcnt--;
+ s->regs[addr] = ((s->regs[addr] & ~R_DMA_PKTCNT_MASK) |
+ (pktcnt << R_DMA_PKTCNT_SHIFT));
+ if (pktcnt == 0) {
+ s->regs[addr] &= ~R_DMA_PKT_TXRX;
+ }
+ }
+ break;
+ case R_DMA_RX_STATUS:
+ if (value & DMA_RX_OVERFLOW) {
+ s->regs[addr] &= ~DMA_RX_OVERFLOW;
+ }
+ if (value & R_DMA_PKT_TXRX) {
+ pktcnt = extract32(s->regs[addr], R_DMA_PKTCNT_SHIFT, 8);
+ pktcnt--;
+ s->regs[addr] = ((s->regs[addr] & ~R_DMA_PKTCNT_MASK) |
+ (pktcnt << R_DMA_PKTCNT_SHIFT));
+ if (pktcnt == 0) {
+ s->regs[addr] &= ~R_DMA_PKT_TXRX;
+ }
+ }
+ break;
+ case R_DMA_IRQ:
+ break;
+ case R_MII_CMD:
+ if (value & MII_CMD_READ) {
+ s->regs[R_MII_STS] = read_from_phy(s);
+ }
+ break;
+ case R_MII_CTL:
+ s->regs[addr] = value;
+ write_to_phy(s);
+ break;
+ default:
+ if (addr < ARRAY_SIZE(s->regs)) {
+ s->regs[addr] = value;
+ } else {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Bad offset 0x%" HWADDR_PRIx "\n", __func__,
+ addr * 4);
+ return;
+ }
+ break;
+ }
+ emac_update_irq(s);
+}
+
+static const MemoryRegionOps emac_ops = {
+ .read = emac_read,
+ .write = emac_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .valid = {
+ .min_access_size = 4,
+ .max_access_size = 4
+ }
+};
+
+static int emac_can_rx(NetClientState *nc)
+{
+ MSSEmacState *s = qemu_get_nic_opaque(nc);
+
+ return !!(s->regs[R_DMA_RX_CTL] & DMA_RX_CTL_EN);
+}
+
+static bool match_addr(MSSEmacState *s, const uint8_t *buf)
+{
+ /*
+ * R_STA1 [31:24] : octet 1 of mac address
+ * R_STA1 [23:16] : octet 2 of mac address
+ .
+ .
+ * R_STA2 [31:24] : octet 5 of mac address
+ * R_STA2 [23:16] : octet 6 of mac address
+ */
+ uint32_t addr1 = bswap32(s->regs[R_STA1]);
+ uint32_t addr2 = s->regs[R_STA2];
+ uint8_t *firstword = (uint8_t *)&addr1;
+ /* The broadcast MAC address: FF:FF:FF:FF:FF:FF */
+ static const uint8_t broadcast_addr[] = { 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF };
+
+ if (!memcmp(buf, broadcast_addr, 6)) {
+ return true;
+ }
+ if (memcmp(firstword, buf, 4)) {
+ return false;
+ }
+ if (buf[4] != ((addr2 >> 24) & 0xff) ||
+ buf[5] != ((addr2 >> 16) & 0xff)) {
+ return false;
+ }
+
+ return true;
+}
+
+static ssize_t emac_rx(NetClientState *nc, const uint8_t *buf, size_t size)
+{
+ MSSEmacState *s = qemu_get_nic_opaque(nc);
+ EmacDesc d;
+ uint8_t pktcnt;
+ uint32_t status;
+
+ if (!emac_can_rx(nc)) {
+ return -1;
+ }
+ if (size > (s->regs[R_FRM_LEN] & 0xFFFF)) {
+ return -1;
+ }
+ if (!match_addr(s, buf)) {
+ return -1;
+ }
+
+ emac_load_desc(&d, s->rx_desc);
+
+ if (d.PktSize & EMPTY_MASK) {
+ cpu_physical_memory_write(d.PktAddr, buf, size & PKT_SIZE);
+ d.PktSize = size & PKT_SIZE;
+ emac_store_desc(&d, s->rx_desc);
+ /* update recieved packets count */
+ status = s->regs[R_DMA_RX_STATUS];
+ pktcnt = extract32(status, R_DMA_PKTCNT_SHIFT, 8);
+ pktcnt++;
+ s->regs[R_DMA_RX_STATUS] = ((status & ~R_DMA_PKTCNT_MASK) |
+ (pktcnt << R_DMA_PKTCNT_SHIFT));
+ s->regs[R_DMA_RX_STATUS] |= R_DMA_PKT_TXRX;
+ s->rx_desc = d.Next;
+ } else {
+ s->regs[R_DMA_RX_CTL] &= ~DMA_RX_CTL_EN;
+ s->regs[R_DMA_RX_STATUS] |= DMA_RX_OVERFLOW;
+ }
+ emac_update_irq(s);
+ return size;
+}
+
+static void mss_emac_reset(DeviceState *dev)
+{
+ MSSEmacState *s = MSS_EMAC(dev);
+
+ mss_emac_do_reset(s);
+}
+
+static void emac_set_link(NetClientState *nc)
+{
+ MSSEmacState *s = qemu_get_nic_opaque(nc);
+
+ mss_phy_update_link(s);
+}
+
+static NetClientInfo net_mss_emac_info = {
+ .type = NET_CLIENT_DRIVER_NIC,
+ .size = sizeof(NICState),
+ .can_receive = emac_can_rx,
+ .receive = emac_rx,
+ .link_status_changed = emac_set_link,
+};
+
+static void mss_emac_realize(DeviceState *dev, Error **errp)
+{
+ MSSEmacState *s = MSS_EMAC(dev);
+
+ qemu_macaddr_default_if_unset(&s->conf.macaddr);
+ s->nic = qemu_new_nic(&net_mss_emac_info, &s->conf,
+ object_get_typename(OBJECT(dev)), dev->id, s);
+ qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a);
+}
+
+static void mss_emac_init(Object *obj)
+{
+ MSSEmacState *s = MSS_EMAC(obj);
+
+ sysbus_init_irq(SYS_BUS_DEVICE(obj), &s->irq);
+
+ memory_region_init_io(&s->mmio, obj, &emac_ops, s,
+ "mss-emac", R_MAX * 4);
+ sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio);
+}
+
+static Property mss_emac_properties[] = {
+ DEFINE_NIC_PROPERTIES(MSSEmacState, conf),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static const VMStateDescription vmstate_mss_emac = {
+ .name = TYPE_MSS_EMAC,
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_BOOL(rx_enabled, MSSEmacState),
+ VMSTATE_UINT32(rx_desc, MSSEmacState),
+ VMSTATE_UINT16_ARRAY(phy_regs, MSSEmacState, 32),
+ VMSTATE_UINT32_ARRAY(regs, MSSEmacState, R_MAX),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void mss_emac_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->realize = mss_emac_realize;
+ dc->reset = mss_emac_reset;
+ dc->props = mss_emac_properties;
+ dc->vmsd = &vmstate_mss_emac;
+}
+
+static const TypeInfo mss_emac_info = {
+ .name = TYPE_MSS_EMAC,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(MSSEmacState),
+ .instance_init = mss_emac_init,
+ .class_init = mss_emac_class_init,
+};
+
+static void mss_emac_register_types(void)
+{
+ type_register_static(&mss_emac_info);
+}
+
+type_init(mss_emac_register_types)
@@ -29,12 +29,14 @@
#include "hw/timer/mss-timer.h"
#include "hw/misc/msf2-sysreg.h"
#include "hw/ssi/mss-spi.h"
+#include "hw/net/mss-emac.h"
#define TYPE_MSF2_SOC "msf2-soc"
#define MSF2_SOC(obj) OBJECT_CHECK(MSF2State, (obj), TYPE_MSF2_SOC)
#define MSF2_NUM_SPIS 2
#define MSF2_NUM_UARTS 2
+#define MSF2_NUM_EMACS 1
/*
* System timer consists of two programmable 32-bit
@@ -62,6 +64,7 @@ typedef struct MSF2State {
MSF2SysregState sysreg;
MSSTimerState timer;
MSSSpiState spi[MSF2_NUM_SPIS];
+ MSSEmacState emac;
} MSF2State;
#endif
new file mode 100644
@@ -0,0 +1,23 @@
+#include "hw/sysbus.h"
+#include "net/net.h"
+
+#define TYPE_MSS_EMAC "mss-emac"
+#define MSS_EMAC(obj) \
+ OBJECT_CHECK(MSSEmacState, (obj), TYPE_MSS_EMAC)
+
+#define R_MAX (0x1a0 / 4)
+
+typedef struct MSSEmacState {
+ SysBusDevice parent;
+
+ MemoryRegion mmio;
+ qemu_irq irq;
+ NICState *nic;
+ NICConf conf;
+ uint32_t tx_desc;
+ uint32_t rx_desc;
+ bool rx_enabled;
+ uint16_t phy_regs[32];
+
+ uint32_t regs[R_MAX];
+} MSSEmacState;
Modelled Ethernet MAC of Smartfusion2 SoC. Micrel KSZ8051 PHY is present on Emcraft's SOM kit hence same PHY is emulated. Signed-off-by: Subbaraya Sundeep <sundeep.lkml@gmail.com> --- hw/arm/msf2-soc.c | 21 +- hw/net/Makefile.objs | 1 + hw/net/mss-emac.c | 544 ++++++++++++++++++++++++++++++++++++++++++++++ include/hw/arm/msf2-soc.h | 3 + include/hw/net/mss-emac.h | 23 ++ 5 files changed, 591 insertions(+), 1 deletion(-) create mode 100644 hw/net/mss-emac.c create mode 100644 include/hw/net/mss-emac.h