1 files changed, 189 insertions, 0 deletions
diff --git a/hw/net/lasi_i82596.c b/hw/net/lasi_i82596.c
new file mode 100644
index 000000000..e37f7fabe
--- /dev/null
+++ b/hw/net/lasi_i82596.c
@@ -0,0 +1,189 @@
+/*
+ * QEMU LASI NIC i82596 emulation
+ *
+ * Copyright (c) 2019 Helge Deller <deller@gmx.de>
+ * This work is licensed under the GNU GPL license version 2 or later.
+ *
+ *
+ * On PA-RISC, this is the Network part of LASI chip.
+ * See:
+ * https://parisc.wiki.kernel.org/images-parisc/7/79/Lasi_ers.pdf
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qemu/timer.h"
+#include "hw/sysbus.h"
+#include "net/eth.h"
+#include "hw/net/lasi_82596.h"
+#include "hw/net/i82596.h"
+#include "trace.h"
+#include "hw/qdev-properties.h"
+#include "migration/vmstate.h"
+
+#define PA_I82596_RESET         0       /* Offsets relative to LASI-LAN-Addr.*/
+#define PA_CPU_PORT_L_ACCESS    4
+#define PA_CHANNEL_ATTENTION    8
+#define PA_GET_MACADDR          12
+
+#define SWAP32(x)   (((uint32_t)(x) << 16) | ((((uint32_t)(x))) >> 16))
+
+static void lasi_82596_mem_write(void *opaque, hwaddr addr,
+                            uint64_t val, unsigned size)
+{
+    SysBusI82596State *d = opaque;
+
+    trace_lasi_82596_mem_writew(addr, val);
+    switch (addr) {
+    case PA_I82596_RESET:
+        i82596_h_reset(&d->state);
+        break;
+    case PA_CPU_PORT_L_ACCESS:
+        d->val_index++;
+        if (d->val_index == 0) {
+            uint32_t v = d->last_val | (val << 16);
+            v = v & ~0xff;
+            i82596_ioport_writew(&d->state, d->last_val & 0xff, v);
+        }
+        d->last_val = val;
+        break;
+    case PA_CHANNEL_ATTENTION:
+        i82596_ioport_writew(&d->state, PORT_CA, val);
+        break;
+    case PA_GET_MACADDR:
+        /*
+         * Provided for SeaBIOS only. Write MAC of Network card to addr @val.
+         * Needed for the PDC_LAN_STATION_ID_READ PDC call.
+         */
+        address_space_write(&address_space_memory, val,
+                            MEMTXATTRS_UNSPECIFIED, d->state.conf.macaddr.a,
+                            ETH_ALEN);
+        break;
+    }
+}
+
+static uint64_t lasi_82596_mem_read(void *opaque, hwaddr addr,
+                               unsigned size)
+{
+    SysBusI82596State *d = opaque;
+    uint32_t val;
+
+    if (addr == PA_GET_MACADDR) {
+        val = 0xBEEFBABE;
+    } else {
+        val = i82596_ioport_readw(&d->state, addr);
+    }
+    trace_lasi_82596_mem_readw(addr, val);
+    return val;
+}
+
+static const MemoryRegionOps lasi_82596_mem_ops = {
+    .read = lasi_82596_mem_read,
+    .write = lasi_82596_mem_write,
+    .endianness = DEVICE_BIG_ENDIAN,
+    .valid = {
+        .min_access_size = 4,
+        .max_access_size = 4,
+    },
+};
+
+static NetClientInfo net_lasi_82596_info = {
+    .type = NET_CLIENT_DRIVER_NIC,
+    .size = sizeof(NICState),
+    .can_receive = i82596_can_receive,
+    .receive = i82596_receive,
+    .link_status_changed = i82596_set_link_status,
+};
+
+static const VMStateDescription vmstate_lasi_82596 = {
+    .name = "i82596",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_STRUCT(state, SysBusI82596State, 0, vmstate_i82596,
+                I82596State),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static void lasi_82596_realize(DeviceState *dev, Error **errp)
+{
+    SysBusI82596State *d = SYSBUS_I82596(dev);
+    I82596State *s = &d->state;
+
+    memory_region_init_io(&s->mmio, OBJECT(d), &lasi_82596_mem_ops, d,
+                "lasi_82596-mmio", PA_GET_MACADDR + 4);
+
+    i82596_common_init(dev, s, &net_lasi_82596_info);
+}
+
+SysBusI82596State *lasi_82596_init(MemoryRegion *addr_space,
+                  hwaddr hpa, qemu_irq lan_irq)
+{
+    DeviceState *dev;
+    SysBusI82596State *s;
+    static const MACAddr HP_MAC = {
+        .a = { 0x08, 0x00, 0x09, 0xef, 0x34, 0xf6 } };
+
+    qemu_check_nic_model(&nd_table[0], TYPE_LASI_82596);
+    dev = qdev_new(TYPE_LASI_82596);
+    s = SYSBUS_I82596(dev);
+    s->state.irq = lan_irq;
+    qdev_set_nic_properties(dev, &nd_table[0]);
+    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
+    s->state.conf.macaddr = HP_MAC; /* set HP MAC prefix */
+
+    /* LASI 82596 ports in main memory. */
+    memory_region_add_subregion(addr_space, hpa, &s->state.mmio);
+    return s;
+}
+
+static void lasi_82596_reset(DeviceState *dev)
+{
+    SysBusI82596State *d = SYSBUS_I82596(dev);
+
+    i82596_h_reset(&d->state);
+}
+
+static void lasi_82596_instance_init(Object *obj)
+{
+    SysBusI82596State *d = SYSBUS_I82596(obj);
+    I82596State *s = &d->state;
+
+    device_add_bootindex_property(obj, &s->conf.bootindex,
+                                  "bootindex", "/ethernet-phy@0",
+                                  DEVICE(obj));
+}
+
+static Property lasi_82596_properties[] = {
+    DEFINE_NIC_PROPERTIES(SysBusI82596State, state.conf),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void lasi_82596_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->realize = lasi_82596_realize;
+    set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
+    dc->fw_name = "ethernet";
+    dc->reset = lasi_82596_reset;
+    dc->vmsd = &vmstate_lasi_82596;
+    dc->user_creatable = false;
+    device_class_set_props(dc, lasi_82596_properties);
+}
+
+static const TypeInfo lasi_82596_info = {
+    .name          = TYPE_LASI_82596,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(SysBusI82596State),
+    .class_init    = lasi_82596_class_init,
+    .instance_init = lasi_82596_instance_init,
+};
+
+static void lasi_82596_register_types(void)
+{
+    type_register_static(&lasi_82596_info);
+}
+
+type_init(lasi_82596_register_types)