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376b8519 HD |
1 | /* |
2 | * QEMU LASI NIC i82596 emulation | |
3 | * | |
4 | * Copyright (c) 2019 Helge Deller <deller@gmx.de> | |
5 | * This work is licensed under the GNU GPL license version 2 or later. | |
6 | * | |
7 | * | |
8 | * On PA-RISC, this is the Network part of LASI chip. | |
9 | * See: | |
10 | * https://parisc.wiki.kernel.org/images-parisc/7/79/Lasi_ers.pdf | |
11 | */ | |
12 | ||
13 | #include "qemu/osdep.h" | |
14 | #include "qemu/timer.h" | |
15 | #include "hw/sysbus.h" | |
16 | #include "net/eth.h" | |
17 | #include "hw/net/lasi_82596.h" | |
18 | #include "hw/net/i82596.h" | |
19 | #include "trace.h" | |
20 | #include "sysemu/sysemu.h" | |
21 | #include "hw/qdev-properties.h" | |
22 | #include "migration/vmstate.h" | |
23 | ||
24 | #define PA_I82596_RESET 0 /* Offsets relative to LASI-LAN-Addr.*/ | |
25 | #define PA_CPU_PORT_L_ACCESS 4 | |
26 | #define PA_CHANNEL_ATTENTION 8 | |
27 | #define PA_GET_MACADDR 12 | |
28 | ||
29 | #define SWAP32(x) (((uint32_t)(x) << 16) | ((((uint32_t)(x))) >> 16)) | |
30 | ||
31 | static void lasi_82596_mem_write(void *opaque, hwaddr addr, | |
32 | uint64_t val, unsigned size) | |
33 | { | |
34 | SysBusI82596State *d = opaque; | |
35 | ||
36 | trace_lasi_82596_mem_writew(addr, val); | |
37 | switch (addr) { | |
38 | case PA_I82596_RESET: | |
39 | i82596_h_reset(&d->state); | |
40 | break; | |
41 | case PA_CPU_PORT_L_ACCESS: | |
42 | d->val_index++; | |
43 | if (d->val_index == 0) { | |
44 | uint32_t v = d->last_val | (val << 16); | |
45 | v = v & ~0xff; | |
46 | i82596_ioport_writew(&d->state, d->last_val & 0xff, v); | |
47 | } | |
48 | d->last_val = val; | |
49 | break; | |
50 | case PA_CHANNEL_ATTENTION: | |
51 | i82596_ioport_writew(&d->state, PORT_CA, val); | |
52 | break; | |
53 | case PA_GET_MACADDR: | |
54 | /* | |
55 | * Provided for SeaBIOS only. Write MAC of Network card to addr @val. | |
56 | * Needed for the PDC_LAN_STATION_ID_READ PDC call. | |
57 | */ | |
19f70347 PM |
58 | address_space_write(&address_space_memory, val, |
59 | MEMTXATTRS_UNSPECIFIED, d->state.conf.macaddr.a, | |
60 | ETH_ALEN); | |
376b8519 HD |
61 | break; |
62 | } | |
63 | } | |
64 | ||
65 | static uint64_t lasi_82596_mem_read(void *opaque, hwaddr addr, | |
66 | unsigned size) | |
67 | { | |
68 | SysBusI82596State *d = opaque; | |
69 | uint32_t val; | |
70 | ||
71 | if (addr == PA_GET_MACADDR) { | |
72 | val = 0xBEEFBABE; | |
73 | } else { | |
74 | val = i82596_ioport_readw(&d->state, addr); | |
75 | } | |
76 | trace_lasi_82596_mem_readw(addr, val); | |
77 | return val; | |
78 | } | |
79 | ||
80 | static const MemoryRegionOps lasi_82596_mem_ops = { | |
81 | .read = lasi_82596_mem_read, | |
82 | .write = lasi_82596_mem_write, | |
83 | .endianness = DEVICE_BIG_ENDIAN, | |
84 | .valid = { | |
85 | .min_access_size = 4, | |
86 | .max_access_size = 4, | |
87 | }, | |
88 | }; | |
89 | ||
90 | static NetClientInfo net_lasi_82596_info = { | |
91 | .type = NET_CLIENT_DRIVER_NIC, | |
92 | .size = sizeof(NICState), | |
93 | .can_receive = i82596_can_receive, | |
94 | .receive = i82596_receive, | |
95 | .link_status_changed = i82596_set_link_status, | |
96 | }; | |
97 | ||
98 | static const VMStateDescription vmstate_lasi_82596 = { | |
99 | .name = "i82596", | |
100 | .version_id = 1, | |
101 | .minimum_version_id = 1, | |
102 | .fields = (VMStateField[]) { | |
103 | VMSTATE_STRUCT(state, SysBusI82596State, 0, vmstate_i82596, | |
104 | I82596State), | |
105 | VMSTATE_END_OF_LIST() | |
106 | } | |
107 | }; | |
108 | ||
109 | static void lasi_82596_realize(DeviceState *dev, Error **errp) | |
110 | { | |
111 | SysBusI82596State *d = SYSBUS_I82596(dev); | |
112 | I82596State *s = &d->state; | |
113 | ||
114 | memory_region_init_io(&s->mmio, OBJECT(d), &lasi_82596_mem_ops, d, | |
115 | "lasi_82596-mmio", PA_GET_MACADDR + 4); | |
116 | ||
117 | i82596_common_init(dev, s, &net_lasi_82596_info); | |
118 | } | |
119 | ||
120 | SysBusI82596State *lasi_82596_init(MemoryRegion *addr_space, | |
121 | hwaddr hpa, qemu_irq lan_irq) | |
122 | { | |
123 | DeviceState *dev; | |
124 | SysBusI82596State *s; | |
125 | static const MACAddr HP_MAC = { | |
126 | .a = { 0x08, 0x00, 0x09, 0xef, 0x34, 0xf6 } }; | |
127 | ||
128 | qemu_check_nic_model(&nd_table[0], TYPE_LASI_82596); | |
129 | dev = qdev_create(NULL, TYPE_LASI_82596); | |
130 | s = SYSBUS_I82596(dev); | |
131 | s->state.irq = lan_irq; | |
132 | qdev_set_nic_properties(dev, &nd_table[0]); | |
133 | qdev_init_nofail(dev); | |
134 | s->state.conf.macaddr = HP_MAC; /* set HP MAC prefix */ | |
135 | ||
136 | /* LASI 82596 ports in main memory. */ | |
137 | memory_region_add_subregion(addr_space, hpa, &s->state.mmio); | |
138 | return s; | |
139 | } | |
140 | ||
141 | static void lasi_82596_reset(DeviceState *dev) | |
142 | { | |
143 | SysBusI82596State *d = SYSBUS_I82596(dev); | |
144 | ||
145 | i82596_h_reset(&d->state); | |
146 | } | |
147 | ||
148 | static void lasi_82596_instance_init(Object *obj) | |
149 | { | |
150 | SysBusI82596State *d = SYSBUS_I82596(obj); | |
151 | I82596State *s = &d->state; | |
152 | ||
153 | device_add_bootindex_property(obj, &s->conf.bootindex, | |
154 | "bootindex", "/ethernet-phy@0", | |
40c2281c | 155 | DEVICE(obj)); |
376b8519 HD |
156 | } |
157 | ||
158 | static Property lasi_82596_properties[] = { | |
159 | DEFINE_NIC_PROPERTIES(SysBusI82596State, state.conf), | |
160 | DEFINE_PROP_END_OF_LIST(), | |
161 | }; | |
162 | ||
163 | static void lasi_82596_class_init(ObjectClass *klass, void *data) | |
164 | { | |
165 | DeviceClass *dc = DEVICE_CLASS(klass); | |
166 | ||
167 | dc->realize = lasi_82596_realize; | |
168 | set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); | |
169 | dc->fw_name = "ethernet"; | |
170 | dc->reset = lasi_82596_reset; | |
171 | dc->vmsd = &vmstate_lasi_82596; | |
172 | dc->user_creatable = false; | |
173 | device_class_set_props(dc, lasi_82596_properties); | |
174 | } | |
175 | ||
176 | static const TypeInfo lasi_82596_info = { | |
177 | .name = TYPE_LASI_82596, | |
178 | .parent = TYPE_SYS_BUS_DEVICE, | |
179 | .instance_size = sizeof(SysBusI82596State), | |
180 | .class_init = lasi_82596_class_init, | |
181 | .instance_init = lasi_82596_instance_init, | |
182 | }; | |
183 | ||
184 | static void lasi_82596_register_types(void) | |
185 | { | |
186 | type_register_static(&lasi_82596_info); | |
187 | } | |
188 | ||
189 | type_init(lasi_82596_register_types) |