| 1 |
/* |
| 2 |
* Cisco router simulation platform. |
| 3 |
* Copyright (c) 2006 Christophe Fillot (cf@utc.fr) |
| 4 |
*/ |
| 5 |
|
| 6 |
#include <stdio.h> |
| 7 |
#include <stdlib.h> |
| 8 |
#include <string.h> |
| 9 |
#include <unistd.h> |
| 10 |
#include <sys/types.h> |
| 11 |
#include <termios.h> |
| 12 |
#include <fcntl.h> |
| 13 |
#include <pthread.h> |
| 14 |
|
| 15 |
#include "ptask.h" |
| 16 |
#include "cpu.h" |
| 17 |
#include "vm.h" |
| 18 |
#include "dynamips.h" |
| 19 |
#include "memory.h" |
| 20 |
#include "device.h" |
| 21 |
#include "dev_vtty.h" |
| 22 |
#include "nmc93c46.h" |
| 23 |
#include "dev_c2600.h" |
| 24 |
|
| 25 |
/* Debugging flags */ |
| 26 |
#define DEBUG_UNKNOWN 1 |
| 27 |
#define DEBUG_ACCESS 0 |
| 28 |
|
| 29 |
/* Definitions for Mainboard EEPROM */ |
| 30 |
#define EEPROM_MB_DOUT 3 |
| 31 |
#define EEPROM_MB_DIN 2 |
| 32 |
#define EEPROM_MB_CLK 1 |
| 33 |
#define EEPROM_MB_CS 0 |
| 34 |
|
| 35 |
/* Definitions for Network Modules EEPROM */ |
| 36 |
#define EEPROM_NM_DOUT 7 |
| 37 |
#define EEPROM_NM_DIN 6 |
| 38 |
#define EEPROM_NM_CLK 2 |
| 39 |
#define EEPROM_NM_CS 4 |
| 40 |
|
| 41 |
#define C2691_NET_IRQ_CLEARING_DELAY 16 |
| 42 |
|
| 43 |
/* IO FPGA structure */ |
| 44 |
struct iofpga_data { |
| 45 |
vm_obj_t vm_obj; |
| 46 |
struct vdevice dev; |
| 47 |
c2600_t *router; |
| 48 |
|
| 49 |
/* |
| 50 |
* Used to introduce a "delay" before clearing the network interrupt |
| 51 |
* on 3620/3640 platforms. Added due to a packet loss when using an |
| 52 |
* Ethernet NM on these platforms. |
| 53 |
* |
| 54 |
* Anyway, we should rely on the device information with appropriate IRQ |
| 55 |
* routing. |
| 56 |
*/ |
| 57 |
int net_irq_clearing_count; |
| 58 |
|
| 59 |
/* Interrupt mask*/ |
| 60 |
m_uint16_t intr_mask; |
| 61 |
}; |
| 62 |
|
| 63 |
/* Mainboard EEPROM definition */ |
| 64 |
static const struct nmc93c46_eeprom_def eeprom_mb_def = { |
| 65 |
EEPROM_MB_CLK, EEPROM_MB_CS, |
| 66 |
EEPROM_MB_DIN, EEPROM_MB_DOUT, |
| 67 |
}; |
| 68 |
|
| 69 |
/* Mainboard EEPROM */ |
| 70 |
static const struct nmc93c46_group eeprom_mb_group = { |
| 71 |
1, 0, "Mainboard EEPROM", 0, { &eeprom_mb_def }, |
| 72 |
}; |
| 73 |
|
| 74 |
/* NM EEPROM definition */ |
| 75 |
static const struct nmc93c46_eeprom_def eeprom_nm_def = { |
| 76 |
EEPROM_NM_CLK, EEPROM_NM_CS, |
| 77 |
EEPROM_NM_DIN, EEPROM_NM_DOUT, |
| 78 |
}; |
| 79 |
|
| 80 |
/* NM EEPROM */ |
| 81 |
static const struct nmc93c46_group eeprom_nm_group = { |
| 82 |
1, 0, "NM EEPROM", 0, { &eeprom_nm_def }, |
| 83 |
}; |
| 84 |
|
| 85 |
/* |
| 86 |
* dev_c2600_iofpga_access() |
| 87 |
*/ |
| 88 |
static void * |
| 89 |
dev_c2600_iofpga_access(cpu_gen_t *cpu,struct vdevice *dev, |
| 90 |
m_uint32_t offset,u_int op_size,u_int op_type, |
| 91 |
m_uint64_t *data) |
| 92 |
{ |
| 93 |
struct iofpga_data *d = dev->priv_data; |
| 94 |
|
| 95 |
if (op_type == MTS_READ) |
| 96 |
*data = 0x0; |
| 97 |
|
| 98 |
#if DEBUG_ACCESS |
| 99 |
if (op_type == MTS_READ) { |
| 100 |
cpu_log(cpu,"IO_FPGA","reading reg 0x%x at pc=0x%llx (size=%u)\n", |
| 101 |
offset,cpu_get_pc(cpu),op_size); |
| 102 |
} else { |
| 103 |
cpu_log(cpu,"IO_FPGA", |
| 104 |
"writing reg 0x%x at pc=0x%llx, data=0x%llx (size=%u)\n", |
| 105 |
offset,cpu_get_pc(cpu),*data,op_size); |
| 106 |
} |
| 107 |
#endif |
| 108 |
|
| 109 |
switch(offset) { |
| 110 |
case 0x04: |
| 111 |
if (op_type == MTS_READ) |
| 112 |
*data = 0x00; |
| 113 |
//vm_clear_irq(cpu->vm,C2600_NETIO_IRQ); |
| 114 |
break; |
| 115 |
|
| 116 |
/* |
| 117 |
* Network Interrupt. |
| 118 |
* |
| 119 |
* Bit 0: slot 1. |
| 120 |
* Bit 4: slot 0 (MB), port 0 |
| 121 |
* Bit 5: slot 0 (MB), port 1 |
| 122 |
* Other: AIM ? (error messages displayed) |
| 123 |
*/ |
| 124 |
case 0x08: |
| 125 |
if (op_type == MTS_READ) |
| 126 |
*data = 0x31; |
| 127 |
vm_clear_irq(cpu->vm,C2600_NETIO_IRQ); |
| 128 |
break; |
| 129 |
|
| 130 |
case 0x10: |
| 131 |
case 0x14: |
| 132 |
if (op_type == MTS_READ) |
| 133 |
*data = 0xFFFFFFFF; |
| 134 |
break; |
| 135 |
|
| 136 |
/* Flash Related: 0x1y */ |
| 137 |
#if 1 |
| 138 |
case 0x0c: |
| 139 |
if (op_type == MTS_READ) |
| 140 |
*data = 0x10; |
| 141 |
break; |
| 142 |
#endif |
| 143 |
|
| 144 |
/* NM EEPROM */ |
| 145 |
case 0x1c: |
| 146 |
if (op_type == MTS_WRITE) |
| 147 |
nmc93c46_write(&d->router->nm_eeprom_group,(u_int)(*data)); |
| 148 |
else |
| 149 |
*data = nmc93c46_read(&d->router->nm_eeprom_group); |
| 150 |
break; |
| 151 |
|
| 152 |
#if DEBUG_UNKNOWN |
| 153 |
default: |
| 154 |
if (op_type == MTS_READ) { |
| 155 |
cpu_log(cpu,"IO_FPGA", |
| 156 |
"read from unknown addr 0x%x, pc=0x%llx (size=%u)\n", |
| 157 |
offset,cpu_get_pc(cpu),op_size); |
| 158 |
} else { |
| 159 |
cpu_log(cpu,"IO_FPGA", |
| 160 |
"write to unknown addr 0x%x, value=0x%llx, " |
| 161 |
"pc=0x%llx (size=%u)\n", |
| 162 |
offset,*data,cpu_get_pc(cpu),op_size); |
| 163 |
} |
| 164 |
#endif |
| 165 |
} |
| 166 |
|
| 167 |
return NULL; |
| 168 |
} |
| 169 |
|
| 170 |
/* Initialize EEPROM groups */ |
| 171 |
void c2600_init_eeprom_groups(c2600_t *router) |
| 172 |
{ |
| 173 |
/* Initialize Mainboard EEPROM */ |
| 174 |
router->mb_eeprom_group = eeprom_mb_group; |
| 175 |
router->mb_eeprom_group.eeprom[0] = &router->mb_eeprom; |
| 176 |
router->mb_eeprom.data = NULL; |
| 177 |
router->mb_eeprom.len = 0; |
| 178 |
|
| 179 |
/* EEPROM for NM slot 1 */ |
| 180 |
router->nm_eeprom_group = eeprom_nm_group; |
| 181 |
router->nm_eeprom_group.eeprom[0] = &router->nm_bay[1].eeprom; |
| 182 |
} |
| 183 |
|
| 184 |
/* Shutdown the IO FPGA device */ |
| 185 |
void dev_c2600_iofpga_shutdown(vm_instance_t *vm,struct iofpga_data *d) |
| 186 |
{ |
| 187 |
if (d != NULL) { |
| 188 |
/* Remove the device */ |
| 189 |
dev_remove(vm,&d->dev); |
| 190 |
|
| 191 |
/* Free the structure itself */ |
| 192 |
free(d); |
| 193 |
} |
| 194 |
} |
| 195 |
|
| 196 |
/* |
| 197 |
* dev_c2600_iofpga_init() |
| 198 |
*/ |
| 199 |
int dev_c2600_iofpga_init(c2600_t *router,m_uint64_t paddr,m_uint32_t len) |
| 200 |
{ |
| 201 |
vm_instance_t *vm = router->vm; |
| 202 |
struct iofpga_data *d; |
| 203 |
|
| 204 |
/* Allocate private data structure */ |
| 205 |
if (!(d = malloc(sizeof(*d)))) { |
| 206 |
fprintf(stderr,"IO_FPGA: out of memory\n"); |
| 207 |
return(-1); |
| 208 |
} |
| 209 |
|
| 210 |
memset(d,0,sizeof(*d)); |
| 211 |
d->router = router; |
| 212 |
|
| 213 |
vm_object_init(&d->vm_obj); |
| 214 |
d->vm_obj.name = "io_fpga"; |
| 215 |
d->vm_obj.data = d; |
| 216 |
d->vm_obj.shutdown = (vm_shutdown_t)dev_c2600_iofpga_shutdown; |
| 217 |
|
| 218 |
/* Set device properties */ |
| 219 |
dev_init(&d->dev); |
| 220 |
d->dev.name = "io_fpga"; |
| 221 |
d->dev.phys_addr = paddr; |
| 222 |
d->dev.phys_len = len; |
| 223 |
d->dev.priv_data = d; |
| 224 |
d->dev.handler = dev_c2600_iofpga_access; |
| 225 |
|
| 226 |
/* Map this device to the VM */ |
| 227 |
vm_bind_device(router->vm,&d->dev); |
| 228 |
vm_object_add(vm,&d->vm_obj); |
| 229 |
return(0); |
| 230 |
} |
Parent Directory
| 
Revision Log