diff options
Diffstat (limited to 'hw/net/lasi_i82596.c')
| -rw-r--r-- | hw/net/lasi_i82596.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/hw/net/lasi_i82596.c b/hw/net/lasi_i82596.c new file mode 100644 index 0000000000..427b3fbf70 --- /dev/null +++ b/hw/net/lasi_i82596.c @@ -0,0 +1,188 @@ +/* + * 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 "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 "sysemu/sysemu.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_rw(&address_space_memory, val, + MEMTXATTRS_UNSPECIFIED, d->state.conf.macaddr.a, ETH_ALEN, 1); + 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_create(NULL, TYPE_LASI_82596); + s = SYSBUS_I82596(dev); + s->state.irq = lan_irq; + qdev_set_nic_properties(dev, &nd_table[0]); + qdev_init_nofail(dev); + 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), NULL); +} + +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) |