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1.1 root 1: /*
2: * Cisco 3725 simulation platform.
3: * Copyright (c) 2006 Christophe Fillot ([email protected])
4: *
5: * This is very similar to c2691.
6: */
7:
8: #include <stdio.h>
9: #include <stdlib.h>
10: #include <string.h>
11: #include <unistd.h>
12: #include <sys/types.h>
13: #include <termios.h>
14: #include <fcntl.h>
15: #include <pthread.h>
16:
17: #include "ptask.h"
18: #include "mips64.h"
19: #include "dynamips.h"
20: #include "memory.h"
21: #include "device.h"
22: #include "dev_vtty.h"
23: #include "nmc93c46.h"
24: #include "dev_c3725.h"
25:
26: /* Debugging flags */
27: #define DEBUG_UNKNOWN 1
28: #define DEBUG_ACCESS 0
29:
30: /* Definitions for Mainboard EEPROM */
31: #define EEPROM_MB_DOUT 3
32: #define EEPROM_MB_DIN 2
33: #define EEPROM_MB_CLK 1
34: #define EEPROM_MB_CS 0
35:
36: /* Definitions for Network Modules EEPROM */
37: #define EEPROM_NM_DOUT 7
38: #define EEPROM_NM_DIN 6
39: #define EEPROM_NM_CLK 2
40: #define EEPROM_NM_CS 4
41:
42: #define C3725_NET_IRQ_CLEARING_DELAY 16
43:
44: /* IO FPGA structure */
45: struct iofpga_data {
46: vm_obj_t vm_obj;
47: struct vdevice dev;
48: c3725_t *router;
49:
50: /*
51: * Used to introduce a "delay" before clearing the network interrupt
52: * on 3620/3640 platforms. Added due to a packet loss when using an
53: * Ethernet NM on these platforms.
54: *
55: * Anyway, we should rely on the device information with appropriate IRQ
56: * routing.
57: */
58: int net_irq_clearing_count;
59:
60: /* Interrupt mask*/
61: m_uint16_t intr_mask;
62: };
63:
64: /* Mainboard EEPROM definition */
65: static const struct nmc93c46_eeprom_def eeprom_mb_def = {
66: EEPROM_MB_CLK, EEPROM_MB_CS,
67: EEPROM_MB_DIN, EEPROM_MB_DOUT,
68: };
69:
70: /* Mainboard EEPROM */
71: static const struct nmc93c46_group eeprom_mb_group = {
72: 1, 0, "Mainboard EEPROM", 0, { &eeprom_mb_def },
73: };
74:
75: /* NM EEPROM definition */
76: static const struct nmc93c46_eeprom_def eeprom_nm_def = {
77: EEPROM_NM_CLK, EEPROM_NM_CS,
78: EEPROM_NM_DIN, EEPROM_NM_DOUT,
79: };
80:
81: /* NM EEPROM */
82: static const struct nmc93c46_group eeprom_nm_group = {
83: 1, 0, "NM EEPROM", 0, { &eeprom_nm_def },
84: };
85:
86: /*
87: * dev_c3725_iofpga_access()
88: */
89: static void *
90: dev_c3725_iofpga_access(cpu_mips_t *cpu,struct vdevice *dev,
91: m_uint32_t offset,u_int op_size,u_int op_type,
92: m_uint64_t *data)
93: {
94: struct iofpga_data *d = dev->priv_data;
95:
96: if (op_type == MTS_READ)
97: *data = 0x0;
98:
99: #if DEBUG_ACCESS
100: if (op_type == MTS_READ) {
101: cpu_log(cpu,"IO_FPGA","reading reg 0x%x at pc=0x%llx (size=%u)\n",
102: offset,cpu->pc,op_size);
103: } else {
104: cpu_log(cpu,"IO_FPGA",
105: "writing reg 0x%x at pc=0x%llx, data=0x%llx (size=%u)\n",
106: offset,cpu->pc,*data,op_size);
107: }
108: #endif
109:
110: switch(offset) {
111: /*
112: * Platform type ?
113: * (other values than 0 cause crashes or lot of errors).
114: */
115: case 0x36:
116: if (op_type == MTS_READ)
117: *data = 0x0000;
118: break;
119:
120: /* Mainboard EEPROM */
121: case 0x0e:
122: if (op_type == MTS_WRITE)
123: nmc93c46_write(&d->router->mb_eeprom_group,(u_int)(*data));
124: else
125: *data = nmc93c46_read(&d->router->mb_eeprom_group);
126: break;
127:
128: case 0x12:
129: /*
130: * Bit 0: 1=No WIC in slot 0 ?
131: * Bit 1: 1=No WIC in slot 1 ?
132: * Bit 2: 1=No WIC in slot 2 ?
133: */
134: if (op_type == MTS_READ)
135: *data = 0x0007;
136: break;
137:
138: case 0x14:
139: if (op_type == MTS_READ)
140: *data = 0xFFFF;
141: break;
142:
143: case 0x18:
144: if (op_type == MTS_READ)
145: *data = 0xFFFF;
146: break;
147:
148: /* wic/vwic related */
149: case 0x40:
150: if (op_type == MTS_READ)
151: *data = 0x0004;
152: break;
153:
154: /* WIC related: 16-bit data */
155: case 0x42:
156: break;
157:
158: /* NM Slot 1 EEPROM */
159: case 0x44:
160: if (op_type == MTS_WRITE)
161: nmc93c46_write(&d->router->nm_eeprom_group[0],(u_int)(*data));
162: else
163: *data = nmc93c46_read(&d->router->nm_eeprom_group[0]);
164: break;
165:
166: /* NM Slot 2 EEPROM */
167: case 0x46:
168: if (op_type == MTS_WRITE)
169: nmc93c46_write(&d->router->nm_eeprom_group[1],(u_int)(*data));
170: else
171: *data = nmc93c46_read(&d->router->nm_eeprom_group[1]);
172: break;
173:
174: /* AIM EEPROM #0 */
175: case 0x48:
176: if (op_type == MTS_READ)
177: *data = 0xFFFF;
178: break;
179:
180: /* AIM EEPROM #1 */
181: case 0x4a:
182: if (op_type == MTS_READ)
183: *data = 0xFFFF;
184: break;
185:
186: /*
187: * NM Presence.
188: *
189: * Bit 7: 0=NM present in slot 1.
190: * Bit 11: 0=NM present in slot 2.
191: * Other bits unknown.
192: */
193: case 0x20:
194: if (op_type == MTS_READ) {
195: *data = 0xFFFF;
196:
197: if (c3725_nm_check_eeprom(d->router,1))
198: *data &= ~0x0008;
199:
200: if (c3725_nm_check_eeprom(d->router,2))
201: *data &= ~0x0800;
202: }
203: break;
204:
205: /* ??? */
206: case 0x24:
207: break;
208:
209: /* Intr Mask (sh platform) */
210: case 0x30:
211: if (op_type == MTS_READ)
212: *data = d->intr_mask;
213: else
214: d->intr_mask = *data;
215: break;
216:
217: /*
218: * Network interrupt status.
219: *
220: * Bit 0: 0 = GT96100 Ethernet ports.
221: * Other bits unknown.
222: */
223: case 0x26:
224: if (op_type == MTS_READ)
225: *data = 0xFFFE;
226: break;
227:
228: /*
229: * Network interrupt status.
230: *
231: * Bit 0: 0 = NM in Slot 1.
232: * Bit 8: 0 = NM in Slot 2.
233: * Other bits unknown.
234: */
235: case 0x28:
236: if (op_type == MTS_READ) {
237: *data = 0xFFEE;
238:
239: if (++d->net_irq_clearing_count == C3725_NET_IRQ_CLEARING_DELAY) {
240: vm_clear_irq(d->router->vm,C3725_NETIO_IRQ);
241: d->net_irq_clearing_count = 0;
242: }
243: }
244: break;
245:
246: case 0x2c:
247: if (op_type == MTS_READ)
248: *data = 0xFFFF;
249: break;
250:
251: /* OIR interrupt but not supported (IRQ 6) */
252: case 0x2e:
253: if (op_type == MTS_READ)
254: *data = 0xFFFF;
255: break;
256:
257: /*
258: * Environmental monitor, determined with "sh env all".
259: *
260: * Bit 0: 1 = Fan Error
261: * Bit 1: 1 = Fan Error
262: * Bit 2: 1 = Over-temperature
263: * Bit 3: ???
264: * Bit 4: 0 = RPS present.
265: * Bit 5: 0 = Input Voltage status failure.
266: * Bit 6: 1 = Thermal status failure.
267: * Bit 7: 1 = DC Output Voltage status failure.
268: */
269: case 0x3a:
270: if (op_type == MTS_READ)
271: *data = 0x0020;
272: break;
273:
274: /*
275: * Bit 0: Slot0 Compact Flash presence.
276: * Bit 1: System Compact Flash presence.
277: */
278: case 0x3c:
279: if (op_type == MTS_READ) {
280: *data = 0xFFFF;
281:
282: /* System Flash ? */
283: if (cpu->vm->pcmcia_disk_size[0])
284: *data &= ~0x02;
285:
286: /* Slot0 Flash ? */
287: if (cpu->vm->pcmcia_disk_size[1])
288: *data &= ~0x01;
289: }
290: break;
291:
292: #if DEBUG_UNKNOWN
293: default:
294: if (op_type == MTS_READ) {
295: cpu_log(cpu,"IO_FPGA",
296: "read from unknown addr 0x%x, pc=0x%llx (size=%u)\n",
297: offset,cpu->pc,op_size);
298: } else {
299: cpu_log(cpu,"IO_FPGA",
300: "write to unknown addr 0x%x, value=0x%llx, "
301: "pc=0x%llx (size=%u)\n",offset,*data,cpu->pc,op_size);
302: }
303: #endif
304: }
305:
306: return NULL;
307: }
308:
309: /* Initialize EEPROM groups */
310: void c3725_init_eeprom_groups(c3725_t *router)
311: {
312: /* Initialize Mainboard EEPROM */
313: router->mb_eeprom_group = eeprom_mb_group;
314: router->mb_eeprom_group.eeprom[0] = &router->mb_eeprom;
315: router->mb_eeprom.data = NULL;
316: router->mb_eeprom.len = 0;
317:
318: /* EEPROM for NM slot 1 */
319: router->nm_eeprom_group[0] = eeprom_nm_group;
320: router->nm_eeprom_group[0].eeprom[0] = &router->nm_bay[1].eeprom;
321:
322: /* EEPROM for NM slot 2 */
323: router->nm_eeprom_group[1] = eeprom_nm_group;
324: router->nm_eeprom_group[1].eeprom[0] = &router->nm_bay[2].eeprom;
325: }
326:
327: /* Shutdown the IO FPGA device */
328: void dev_c3725_iofpga_shutdown(vm_instance_t *vm,struct iofpga_data *d)
329: {
330: if (d != NULL) {
331: /* Remove the device */
332: dev_remove(vm,&d->dev);
333:
334: /* Free the structure itself */
335: free(d);
336: }
337: }
338:
339: /*
340: * dev_c3725_iofpga_init()
341: */
342: int dev_c3725_iofpga_init(c3725_t *router,m_uint64_t paddr,m_uint32_t len)
343: {
344: vm_instance_t *vm = router->vm;
345: struct iofpga_data *d;
346:
347: /* Allocate private data structure */
348: if (!(d = malloc(sizeof(*d)))) {
349: fprintf(stderr,"IO_FPGA: out of memory\n");
350: return(-1);
351: }
352:
353: memset(d,0,sizeof(*d));
354: d->router = router;
355:
356: vm_object_init(&d->vm_obj);
357: d->vm_obj.name = "io_fpga";
358: d->vm_obj.data = d;
359: d->vm_obj.shutdown = (vm_shutdown_t)dev_c3725_iofpga_shutdown;
360:
361: /* Set device properties */
362: dev_init(&d->dev);
363: d->dev.name = "io_fpga";
364: d->dev.phys_addr = paddr;
365: d->dev.phys_len = len;
366: d->dev.priv_data = d;
367: d->dev.handler = dev_c3725_iofpga_access;
368:
369: /* Map this device to the VM */
370: vm_bind_device(router->vm,&d->dev);
371: vm_object_add(vm,&d->vm_obj);
372: return(0);
373: }
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