25 |
* SUCH DAMAGE. |
* SUCH DAMAGE. |
26 |
* |
* |
27 |
* |
* |
28 |
* $Id: dev_ether.c,v 1.11 2006/02/09 20:02:59 debug Exp $ |
* $Id: dev_ether.c,v 1.14 2006/06/15 17:29:38 debug Exp $ |
29 |
* |
* |
30 |
* Basic "ethernet" network device. This is a simple test device which can |
* Basic "ethernet" network device. This is a simple test device which can |
31 |
* be used to send and receive packets to/from a simulated ethernet network. |
* be used to send and receive packets to/from a simulated ethernet network. |
37 |
|
|
38 |
#include "cpu.h" |
#include "cpu.h" |
39 |
#include "device.h" |
#include "device.h" |
|
#include "devices.h" |
|
40 |
#include "emul.h" |
#include "emul.h" |
41 |
#include "machine.h" |
#include "machine.h" |
42 |
#include "memory.h" |
#include "memory.h" |
43 |
#include "misc.h" |
#include "misc.h" |
44 |
#include "net.h" |
#include "net.h" |
45 |
|
|
46 |
|
#include "testmachine/dev_ether.h" |
47 |
|
|
|
#define DEV_ETHER_MAXBUFLEN 16384 |
|
|
#define DEV_ETHER_TICK_SHIFT 14 |
|
48 |
|
|
49 |
#define STATUS_RECEIVED 0x01 |
#define DEV_ETHER_TICK_SHIFT 14 |
|
#define STATUS_MORE_AVAIL 0x02 |
|
50 |
|
|
51 |
struct ether_data { |
struct ether_data { |
52 |
unsigned char buf[DEV_ETHER_MAXBUFLEN]; |
unsigned char buf[DEV_ETHER_BUFFER_SIZE]; |
53 |
unsigned char mac[6]; |
unsigned char mac[6]; |
54 |
|
|
55 |
int status; |
int status; |
67 |
struct ether_data *d = (struct ether_data *) extra; |
struct ether_data *d = (struct ether_data *) extra; |
68 |
int r = 0; |
int r = 0; |
69 |
|
|
70 |
d->status &= ~STATUS_MORE_AVAIL; |
d->status &= ~DEV_ETHER_STATUS_MORE_PACKETS_AVAILABLE; |
71 |
if (cpu->machine->emul->net != NULL) |
if (cpu->machine->emul->net != NULL) |
72 |
r = net_ethernet_rx_avail(cpu->machine->emul->net, d); |
r = net_ethernet_rx_avail(cpu->machine->emul->net, d); |
73 |
if (r) |
if (r) |
74 |
d->status |= STATUS_MORE_AVAIL; |
d->status |= DEV_ETHER_STATUS_MORE_PACKETS_AVAILABLE; |
75 |
|
|
76 |
if (d->status) |
if (d->status) |
77 |
cpu_interrupt(cpu, d->irq_nr); |
cpu_interrupt(cpu, d->irq_nr); |
95 |
} |
} |
96 |
|
|
97 |
|
|
|
/* |
|
|
* dev_ether_access(): |
|
|
*/ |
|
98 |
DEVICE_ACCESS(ether) |
DEVICE_ACCESS(ether) |
99 |
{ |
{ |
100 |
struct ether_data *d = (struct ether_data *) extra; |
struct ether_data *d = (struct ether_data *) extra; |
105 |
if (writeflag == MEM_WRITE) |
if (writeflag == MEM_WRITE) |
106 |
idata = memory_readmax64(cpu, data, len); |
idata = memory_readmax64(cpu, data, len); |
107 |
|
|
108 |
switch (relative_addr) { |
/* Note: relative_addr + DEV_ETHER_BUFFER_SIZE to get the same |
109 |
case 0x0000: |
offsets as in the header file: */ |
110 |
|
|
111 |
|
switch (relative_addr + DEV_ETHER_BUFFER_SIZE) { |
112 |
|
|
113 |
|
case DEV_ETHER_STATUS: |
114 |
if (writeflag == MEM_READ) { |
if (writeflag == MEM_READ) { |
115 |
odata = d->status; |
odata = d->status; |
116 |
d->status = 0; |
d->status = 0; |
118 |
} else |
} else |
119 |
fatal("[ ether: WARNING: write to status ]\n"); |
fatal("[ ether: WARNING: write to status ]\n"); |
120 |
break; |
break; |
121 |
case 0x0010: |
|
122 |
|
case DEV_ETHER_PACKETLENGTH: |
123 |
if (writeflag == MEM_READ) |
if (writeflag == MEM_READ) |
124 |
odata = d->packet_len; |
odata = d->packet_len; |
125 |
else { |
else { |
128 |
" short (%i bytes) ]\n", (int)idata); |
" short (%i bytes) ]\n", (int)idata); |
129 |
idata = -1; |
idata = -1; |
130 |
} |
} |
131 |
if (idata > DEV_ETHER_MAXBUFLEN) { |
if (idata > DEV_ETHER_BUFFER_SIZE) { |
132 |
fatal("[ ether: ERROR: packet len too" |
fatal("[ ether: ERROR: packet len too" |
133 |
" large (%i bytes) ]\n", (int)idata); |
" large (%i bytes) ]\n", (int)idata); |
134 |
idata = DEV_ETHER_MAXBUFLEN; |
idata = DEV_ETHER_BUFFER_SIZE; |
135 |
} |
} |
136 |
d->packet_len = idata; |
d->packet_len = idata; |
137 |
} |
} |
138 |
break; |
break; |
139 |
case 0x0020: |
|
140 |
if (writeflag == MEM_READ) |
case DEV_ETHER_COMMAND: |
141 |
|
if (writeflag == MEM_READ) { |
142 |
fatal("[ ether: WARNING: read from command ]\n"); |
fatal("[ ether: WARNING: read from command ]\n"); |
143 |
else { |
break; |
144 |
switch (idata) { |
} |
145 |
case 0x00: /* Receive: */ |
|
146 |
if (cpu->machine->emul->net == NULL) |
/* Write: */ |
147 |
fatal("[ ether: RECEIVE but no " |
switch (idata) { |
148 |
"net? ]\n"); |
|
149 |
else { |
case DEV_ETHER_COMMAND_RX: /* Receive: */ |
150 |
d->status &= ~STATUS_RECEIVED; |
if (cpu->machine->emul->net == NULL) |
151 |
net_ethernet_rx(cpu->machine->emul->net, |
fatal("[ ether: RECEIVE but no net? ]\n"); |
152 |
d, &incoming_ptr, &incoming_len); |
else { |
153 |
if (incoming_ptr != NULL) { |
d->status &= ~DEV_ETHER_STATUS_PACKET_RECEIVED; |
154 |
d->status |= STATUS_RECEIVED; |
net_ethernet_rx(cpu->machine->emul->net, |
155 |
if (incoming_len > |
d, &incoming_ptr, &incoming_len); |
156 |
DEV_ETHER_MAXBUFLEN) |
if (incoming_ptr != NULL) { |
157 |
incoming_len = |
d->status |= |
158 |
DEV_ETHER_MAXBUFLEN; |
DEV_ETHER_STATUS_PACKET_RECEIVED; |
159 |
memcpy(d->buf, incoming_ptr, |
if (incoming_len>DEV_ETHER_BUFFER_SIZE) |
160 |
incoming_len); |
incoming_len = |
161 |
free(incoming_ptr); |
DEV_ETHER_BUFFER_SIZE; |
162 |
d->packet_len = incoming_len; |
memcpy(d->buf, incoming_ptr, |
163 |
} |
incoming_len); |
164 |
|
free(incoming_ptr); |
165 |
|
d->packet_len = incoming_len; |
166 |
} |
} |
|
dev_ether_tick(cpu, d); |
|
|
break; |
|
|
case 0x01: /* Send */ |
|
|
if (cpu->machine->emul->net == NULL) |
|
|
fatal("[ ether: SEND but no net? ]\n"); |
|
|
else |
|
|
net_ethernet_tx(cpu->machine->emul->net, |
|
|
d, d->buf, d->packet_len); |
|
|
d->status &= ~STATUS_RECEIVED; |
|
|
dev_ether_tick(cpu, d); |
|
|
break; |
|
|
default:fatal("[ ether: UNIMPLEMENTED command 0x" |
|
|
"%02x ]\n", idata); |
|
|
cpu->running = 0; |
|
167 |
} |
} |
168 |
|
dev_ether_tick(cpu, d); |
169 |
|
break; |
170 |
|
|
171 |
|
case DEV_ETHER_COMMAND_TX: /* Send */ |
172 |
|
if (cpu->machine->emul->net == NULL) |
173 |
|
fatal("[ ether: SEND but no net? ]\n"); |
174 |
|
else |
175 |
|
net_ethernet_tx(cpu->machine->emul->net, |
176 |
|
d, d->buf, d->packet_len); |
177 |
|
d->status &= ~DEV_ETHER_STATUS_PACKET_RECEIVED; |
178 |
|
dev_ether_tick(cpu, d); |
179 |
|
break; |
180 |
|
|
181 |
|
default:fatal("[ ether: UNIMPLEMENTED command 0x" |
182 |
|
"%02x ]\n", idata); |
183 |
|
cpu->running = 0; |
184 |
} |
} |
185 |
break; |
break; |
186 |
|
|
187 |
default:if (writeflag == MEM_WRITE) { |
default:if (writeflag == MEM_WRITE) { |
188 |
fatal("[ ether: unimplemented write to " |
fatal("[ ether: unimplemented write to " |
189 |
"offset 0x%x: data=0x%x ]\n", (int) |
"offset 0x%x: data=0x%x ]\n", (int) |
226 |
snprintf(n1, nlen, "%s [%s]", devinit->name, tmp); |
snprintf(n1, nlen, "%s [%s]", devinit->name, tmp); |
227 |
snprintf(n2, nlen, "%s [%s, control]", devinit->name, tmp); |
snprintf(n2, nlen, "%s [%s, control]", devinit->name, tmp); |
228 |
|
|
229 |
memory_device_register(devinit->machine->memory, n1, |
memory_device_register(devinit->machine->memory, n1, devinit->addr, |
230 |
devinit->addr, DEV_ETHER_MAXBUFLEN, dev_ether_buf_access, (void *)d, |
DEV_ETHER_BUFFER_SIZE, dev_ether_buf_access, (void *)d, |
231 |
DM_DYNTRANS_OK | DM_DYNTRANS_WRITE_OK | |
DM_DYNTRANS_OK | DM_DYNTRANS_WRITE_OK | |
232 |
DM_READS_HAVE_NO_SIDE_EFFECTS, d->buf); |
DM_READS_HAVE_NO_SIDE_EFFECTS, d->buf); |
233 |
memory_device_register(devinit->machine->memory, n2, |
memory_device_register(devinit->machine->memory, n2, |
234 |
devinit->addr + DEV_ETHER_MAXBUFLEN, |
devinit->addr + DEV_ETHER_BUFFER_SIZE, |
235 |
DEV_ETHER_LENGTH-DEV_ETHER_MAXBUFLEN, dev_ether_access, (void *)d, |
DEV_ETHER_LENGTH-DEV_ETHER_BUFFER_SIZE, dev_ether_access, (void *)d, |
236 |
DM_DEFAULT, NULL); |
DM_DEFAULT, NULL); |
237 |
|
|
238 |
net_add_nic(devinit->machine->emul->net, d, d->mac); |
net_add_nic(devinit->machine->emul->net, d, d->mac); |
239 |
|
|
240 |
machine_add_tickfunction(devinit->machine, |
machine_add_tickfunction(devinit->machine, |
241 |
dev_ether_tick, d, DEV_ETHER_TICK_SHIFT); |
dev_ether_tick, d, DEV_ETHER_TICK_SHIFT, 0.0); |
242 |
|
|
243 |
return 1; |
return 1; |
244 |
} |
} |