1 |
/* |
2 |
* Cisco 3725 simulation platform. |
3 |
* Copyright (c) 2006 Christophe Fillot (cf@utc.fr) |
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 "cpu.h" |
19 |
#include "vm.h" |
20 |
#include "dynamips.h" |
21 |
#include "memory.h" |
22 |
#include "device.h" |
23 |
#include "dev_vtty.h" |
24 |
#include "nmc93cX6.h" |
25 |
#include "dev_c3725.h" |
26 |
|
27 |
/* Debugging flags */ |
28 |
#define DEBUG_UNKNOWN 1 |
29 |
#define DEBUG_ACCESS 0 |
30 |
#define DEBUG_NET_IRQ 0 |
31 |
|
32 |
/* Definitions for Mainboard EEPROM */ |
33 |
#define EEPROM_MB_DOUT 3 |
34 |
#define EEPROM_MB_DIN 2 |
35 |
#define EEPROM_MB_CLK 1 |
36 |
#define EEPROM_MB_CS 0 |
37 |
|
38 |
/* Definitions for Network Modules EEPROM */ |
39 |
#define EEPROM_NM_DOUT 7 |
40 |
#define EEPROM_NM_DIN 6 |
41 |
#define EEPROM_NM_CLK 2 |
42 |
#define EEPROM_NM_CS 4 |
43 |
|
44 |
/* Network IRQ distribution */ |
45 |
struct net_irq_distrib { |
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u_int reg; |
47 |
u_int offset; |
48 |
}; |
49 |
|
50 |
static struct net_irq_distrib net_irq_dist[C3725_MAX_NM_BAYS] = { |
51 |
{ 0, 0 }, /* Slot 0: reg 0x26, 0x000000XX */ |
52 |
{ 1, 0 }, /* Slot 1: reg 0x28, 0x0000000X */ |
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{ 1, 4 }, /* Slot 2: reg 0x28, 0x000000X0 */ |
54 |
}; |
55 |
|
56 |
/* IO FPGA structure */ |
57 |
struct c3725_iofpga_data { |
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vm_obj_t vm_obj; |
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struct vdevice dev; |
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c3725_t *router; |
61 |
|
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/* Network IRQ status */ |
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m_uint16_t net_irq_status[2]; |
64 |
|
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/* Interrupt mask */ |
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m_uint16_t intr_mask; |
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|
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/* WIC select */ |
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u_int wic_select; |
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u_int wic_cmd_pos; |
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u_int wic_cmd_valid; |
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m_uint16_t wic_cmd[2]; |
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}; |
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|
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/* Mainboard EEPROM definition */ |
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static const struct nmc93cX6_eeprom_def eeprom_mb_def = { |
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EEPROM_MB_CLK, EEPROM_MB_CS, |
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EEPROM_MB_DIN, EEPROM_MB_DOUT, |
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}; |
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|
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/* Mainboard EEPROM */ |
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static const struct nmc93cX6_group eeprom_mb_group = { |
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EEPROM_TYPE_NMC93C46, 1, 0, |
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EEPROM_DORD_NORMAL, |
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EEPROM_DOUT_HIGH, |
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EEPROM_DEBUG_DISABLED, |
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"Mainboard EEPROM", |
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{ &eeprom_mb_def }, |
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}; |
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|
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/* NM EEPROM definition */ |
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static const struct nmc93cX6_eeprom_def eeprom_nm_def = { |
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EEPROM_NM_CLK, EEPROM_NM_CS, |
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EEPROM_NM_DIN, EEPROM_NM_DOUT, |
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}; |
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|
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/* NM EEPROM */ |
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static const struct nmc93cX6_group eeprom_nm_group = { |
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EEPROM_TYPE_NMC93C46, 1, 0, |
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EEPROM_DORD_NORMAL, |
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EEPROM_DOUT_HIGH, |
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EEPROM_DEBUG_DISABLED, |
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"NM EEPROM", |
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{ &eeprom_nm_def }, |
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}; |
106 |
|
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/* Update network interrupt status */ |
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static inline void dev_c3725_iofpga_net_update_irq(struct c3725_iofpga_data *d) |
109 |
{ |
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if ((d->net_irq_status[0] != 0xFFFF) || (d->net_irq_status[1] != 0xFFFF)) { |
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vm_set_irq(d->router->vm,C3725_NETIO_IRQ); |
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} else { |
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vm_clear_irq(d->router->vm,C3725_NETIO_IRQ); |
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} |
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} |
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|
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/* Trigger a Network IRQ for the specified slot/port */ |
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void dev_c3725_iofpga_net_set_irq(struct c3725_iofpga_data *d, |
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u_int slot,u_int port) |
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{ |
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struct net_irq_distrib *irq_dist; |
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|
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#if DEBUG_NET_IRQ |
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vm_log(d->router->vm,"IO_FPGA","setting NetIRQ for slot %u port %u\n", |
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slot,port); |
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#endif |
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irq_dist = &net_irq_dist[slot]; |
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d->net_irq_status[irq_dist->reg] &= ~(1 << (irq_dist->offset + port)); |
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dev_c3725_iofpga_net_update_irq(d); |
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} |
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|
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/* Clear a Network IRQ for the specified slot/port */ |
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void dev_c3725_iofpga_net_clear_irq(struct c3725_iofpga_data *d, |
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u_int slot,u_int port) |
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{ |
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struct net_irq_distrib *irq_dist; |
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|
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#if DEBUG_NET_IRQ |
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vm_log(d->router->vm,"IO_FPGA","clearing NetIRQ for slot %u port %u\n", |
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slot,port); |
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#endif |
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irq_dist = &net_irq_dist[slot]; |
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d->net_irq_status[irq_dist->reg] |= (1 << (irq_dist->offset + port)); |
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dev_c3725_iofpga_net_update_irq(d); |
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} |
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|
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/* Read a WIC EEPROM */ |
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static m_uint16_t dev_c3725_read_wic_eeprom(struct c3725_iofpga_data *d) |
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{ |
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struct cisco_eeprom *eeprom; |
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u_int wic_port; |
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u_int eeprom_offset; |
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m_uint8_t val[2]; |
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|
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switch(d->wic_select) { |
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case 0x1700: |
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wic_port = 0x10; |
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break; |
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case 0x1D00: |
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wic_port = 0x20; |
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break; |
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case 0x3500: |
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wic_port = 0x30; |
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break; |
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default: |
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wic_port = 0; |
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} |
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|
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/* No WIC in slot or no EEPROM: fake an empty EEPROM */ |
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if (!wic_port || !(eeprom = vm_slot_get_eeprom(d->router->vm,0,wic_port))) |
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return(0xFFFF); |
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|
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/* EEPROM offset is in the lowest 6 bits */ |
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eeprom_offset = d->wic_cmd[0] & 0x3F; |
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|
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cisco_eeprom_get_byte(eeprom,eeprom_offset,&val[0]); |
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cisco_eeprom_get_byte(eeprom,eeprom_offset+1,&val[1]); |
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|
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return(((m_uint16_t)val[0] << 8) | val[1]); |
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} |
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|
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/* |
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* dev_c3725_iofpga_access() |
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*/ |
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static void * |
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dev_c3725_iofpga_access(cpu_gen_t *cpu,struct vdevice *dev, |
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m_uint32_t offset,u_int op_size,u_int op_type, |
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m_uint64_t *data) |
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{ |
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struct c3725_iofpga_data *d = dev->priv_data; |
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|
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if (op_type == MTS_READ) |
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*data = 0x0; |
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|
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#if DEBUG_ACCESS |
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if (op_type == MTS_READ) { |
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cpu_log(cpu,"IO_FPGA","reading reg 0x%x at pc=0x%llx (size=%u)\n", |
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offset,cpu_get_pc(cpu),op_size); |
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} else { |
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cpu_log(cpu,"IO_FPGA", |
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"writing reg 0x%x at pc=0x%llx, data=0x%llx (size=%u)\n", |
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offset,cpu_get_pc(cpu),*data,op_size); |
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} |
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#endif |
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|
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switch(offset) { |
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/* |
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* Platform type ? |
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* 0x04 and 0x05 seem to work. |
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*/ |
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case 0x36: |
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if (op_type == MTS_READ) |
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*data = 0x04 << 5; |
214 |
break; |
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|
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/* Mainboard EEPROM */ |
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case 0x0e: |
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if (op_type == MTS_WRITE) |
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nmc93cX6_write(&d->router->mb_eeprom_group,(u_int)(*data)); |
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else |
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*data = nmc93cX6_read(&d->router->mb_eeprom_group); |
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break; |
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|
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case 0x12: |
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/* |
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* Bit 0: 1=No WIC in slot 0. |
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* Bit 1: 1=No WIC in slot 1. |
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* Bit 2: 1=No WIC in slot 2. |
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*/ |
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if (op_type == MTS_READ) { |
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*data = 0xFFFF; |
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|
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/* check WIC 0 */ |
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if (vm_slot_check_eeprom(d->router->vm,0,0x10)) |
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*data &= ~0x01; |
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|
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/* check WIC 1 */ |
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if (vm_slot_check_eeprom(d->router->vm,0,0x20)) |
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*data &= ~0x02; |
240 |
|
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/* check WIC 2 */ |
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if (vm_slot_check_eeprom(d->router->vm,0,0x30)) |
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*data &= ~0x04; |
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} else { |
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d->wic_select = *data; |
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} |
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break; |
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|
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case 0x14: |
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if (op_type == MTS_READ) |
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*data = 0xFFFF; |
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break; |
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|
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case 0x18: |
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if (op_type == MTS_READ) |
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*data = 0xFFFF; |
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break; |
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|
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/* wic/vwic related */ |
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case 0x40: |
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if (op_type == MTS_READ) |
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*data = 0x0004; |
263 |
break; |
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|
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/* WIC related: 16-bit data */ |
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case 0x42: |
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if (op_type == MTS_READ) { |
268 |
if (d->wic_cmd_valid) { |
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*data = dev_c3725_read_wic_eeprom(d); |
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d->wic_cmd_valid = FALSE; |
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} else { |
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*data = 0xFFFF; |
273 |
} |
274 |
} else { |
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/* |
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* Store the EEPROM command (in 2 words). |
277 |
* |
278 |
* For a read, we have: |
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* Word 0: 0x180 (nmc93c46 READ) + offset (6-bits). |
280 |
* Word 1: 0 (no data). |
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*/ |
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d->wic_cmd[d->wic_cmd_pos++] = *data; |
283 |
|
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if (d->wic_cmd_pos == 2) { |
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d->wic_cmd_pos = 0; |
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d->wic_cmd_valid = TRUE; |
287 |
} |
288 |
} |
289 |
break; |
290 |
|
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/* NM Slot 1 EEPROM */ |
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case 0x44: |
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if (op_type == MTS_WRITE) |
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nmc93cX6_write(&d->router->nm_eeprom_group[0],(u_int)(*data)); |
295 |
else |
296 |
*data = nmc93cX6_read(&d->router->nm_eeprom_group[0]); |
297 |
break; |
298 |
|
299 |
/* NM Slot 2 EEPROM */ |
300 |
case 0x46: |
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if (op_type == MTS_WRITE) |
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nmc93cX6_write(&d->router->nm_eeprom_group[1],(u_int)(*data)); |
303 |
else |
304 |
*data = nmc93cX6_read(&d->router->nm_eeprom_group[1]); |
305 |
break; |
306 |
|
307 |
/* AIM EEPROM #0 */ |
308 |
case 0x48: |
309 |
if (op_type == MTS_READ) |
310 |
*data = 0xFFFF; |
311 |
break; |
312 |
|
313 |
/* AIM EEPROM #1 */ |
314 |
case 0x4a: |
315 |
if (op_type == MTS_READ) |
316 |
*data = 0xFFFF; |
317 |
break; |
318 |
|
319 |
/* |
320 |
* NM Presence. |
321 |
* |
322 |
* Bit 7: 0=NM present in slot 1. |
323 |
* Bit 11: 0=NM present in slot 2. |
324 |
* Other bits unknown. |
325 |
*/ |
326 |
case 0x20: |
327 |
if (op_type == MTS_READ) { |
328 |
*data = 0xFFFF; |
329 |
|
330 |
if (vm_slot_get_card_ptr(d->router->vm,1)) |
331 |
*data &= ~0x0008; |
332 |
|
333 |
if (vm_slot_get_card_ptr(d->router->vm,2)) |
334 |
*data &= ~0x0800; |
335 |
} |
336 |
break; |
337 |
|
338 |
/* ??? */ |
339 |
case 0x24: |
340 |
break; |
341 |
|
342 |
/* Intr Mask (sh platform) */ |
343 |
case 0x30: |
344 |
if (op_type == MTS_READ) |
345 |
*data = d->intr_mask; |
346 |
else |
347 |
d->intr_mask = *data; |
348 |
break; |
349 |
|
350 |
/* |
351 |
* Network interrupt status. |
352 |
* |
353 |
* Bit 0: 0 = GT96100 Ethernet ports. |
354 |
* Other bits unknown. |
355 |
*/ |
356 |
case 0x26: |
357 |
if (op_type == MTS_READ) |
358 |
*data = d->net_irq_status[0]; |
359 |
break; |
360 |
|
361 |
/* |
362 |
* Network interrupt status. |
363 |
* |
364 |
* Bit 0: 0 = NM in Slot 1. |
365 |
* Bit 8: 0 = NM in Slot 2. |
366 |
* Other bits unknown. |
367 |
*/ |
368 |
case 0x28: |
369 |
if (op_type == MTS_READ) |
370 |
*data = d->net_irq_status[1]; |
371 |
break; |
372 |
|
373 |
case 0x2c: |
374 |
if (op_type == MTS_READ) |
375 |
*data = 0xFFFF; |
376 |
break; |
377 |
|
378 |
/* OIR interrupt but not supported (IRQ 6) */ |
379 |
case 0x2e: |
380 |
if (op_type == MTS_READ) |
381 |
*data = 0xFFFF; |
382 |
break; |
383 |
|
384 |
/* |
385 |
* Environmental monitor, determined with "sh env all". |
386 |
* |
387 |
* Bit 0: 1 = Fan Error |
388 |
* Bit 1: 1 = Fan Error |
389 |
* Bit 2: 1 = Over-temperature |
390 |
* Bit 3: ??? |
391 |
* Bit 4: 0 = RPS present. |
392 |
* Bit 5: 0 = Input Voltage status failure. |
393 |
* Bit 6: 1 = Thermal status failure. |
394 |
* Bit 7: 1 = DC Output Voltage status failure. |
395 |
*/ |
396 |
case 0x3a: |
397 |
if (op_type == MTS_READ) |
398 |
*data = 0x0020; |
399 |
break; |
400 |
|
401 |
/* |
402 |
* Bit 0: Slot0 Compact Flash presence. |
403 |
* Bit 1: System Compact Flash presence. |
404 |
*/ |
405 |
case 0x3c: |
406 |
if (op_type == MTS_READ) { |
407 |
*data = 0xFFFF; |
408 |
|
409 |
/* System Flash ? */ |
410 |
if (cpu->vm->pcmcia_disk_size[0]) |
411 |
*data &= ~0x02; |
412 |
|
413 |
/* Slot0 Flash ? */ |
414 |
if (cpu->vm->pcmcia_disk_size[1]) |
415 |
*data &= ~0x01; |
416 |
} |
417 |
break; |
418 |
|
419 |
#if DEBUG_UNKNOWN |
420 |
default: |
421 |
if (op_type == MTS_READ) { |
422 |
cpu_log(cpu,"IO_FPGA", |
423 |
"read from unknown addr 0x%x, pc=0x%llx (size=%u)\n", |
424 |
offset,cpu_get_pc(cpu),op_size); |
425 |
} else { |
426 |
cpu_log(cpu,"IO_FPGA", |
427 |
"write to unknown addr 0x%x, value=0x%llx, " |
428 |
"pc=0x%llx (size=%u)\n", |
429 |
offset,*data,cpu_get_pc(cpu),op_size); |
430 |
} |
431 |
#endif |
432 |
} |
433 |
|
434 |
return NULL; |
435 |
} |
436 |
|
437 |
/* Initialize EEPROM groups */ |
438 |
void c3725_init_eeprom_groups(c3725_t *router) |
439 |
{ |
440 |
/* Initialize Mainboard EEPROM */ |
441 |
router->mb_eeprom_group = eeprom_mb_group; |
442 |
router->mb_eeprom_group.eeprom[0] = &router->mb_eeprom; |
443 |
router->mb_eeprom.data = NULL; |
444 |
router->mb_eeprom.len = 0; |
445 |
|
446 |
/* EEPROM for NM slot 1 */ |
447 |
router->nm_eeprom_group[0] = eeprom_nm_group; |
448 |
router->nm_eeprom_group[0].eeprom[0] = NULL; |
449 |
|
450 |
/* EEPROM for NM slot 2 */ |
451 |
router->nm_eeprom_group[1] = eeprom_nm_group; |
452 |
router->nm_eeprom_group[1].eeprom[0] = NULL; |
453 |
} |
454 |
|
455 |
/* Shutdown the IO FPGA device */ |
456 |
static void |
457 |
dev_c3725_iofpga_shutdown(vm_instance_t *vm,struct c3725_iofpga_data *d) |
458 |
{ |
459 |
if (d != NULL) { |
460 |
/* Remove the device */ |
461 |
dev_remove(vm,&d->dev); |
462 |
|
463 |
/* Free the structure itself */ |
464 |
free(d); |
465 |
} |
466 |
} |
467 |
|
468 |
/* |
469 |
* dev_c3725_iofpga_init() |
470 |
*/ |
471 |
int dev_c3725_iofpga_init(c3725_t *router,m_uint64_t paddr,m_uint32_t len) |
472 |
{ |
473 |
vm_instance_t *vm = router->vm; |
474 |
struct c3725_iofpga_data *d; |
475 |
|
476 |
/* Allocate private data structure */ |
477 |
if (!(d = malloc(sizeof(*d)))) { |
478 |
fprintf(stderr,"IO_FPGA: out of memory\n"); |
479 |
return(-1); |
480 |
} |
481 |
|
482 |
memset(d,0,sizeof(*d)); |
483 |
d->router = router; |
484 |
d->net_irq_status[0] = 0xFFFF; |
485 |
d->net_irq_status[1] = 0xFFFF; |
486 |
|
487 |
vm_object_init(&d->vm_obj); |
488 |
d->vm_obj.name = "io_fpga"; |
489 |
d->vm_obj.data = d; |
490 |
d->vm_obj.shutdown = (vm_shutdown_t)dev_c3725_iofpga_shutdown; |
491 |
|
492 |
/* Set device properties */ |
493 |
dev_init(&d->dev); |
494 |
d->dev.name = "io_fpga"; |
495 |
d->dev.phys_addr = paddr; |
496 |
d->dev.phys_len = len; |
497 |
d->dev.priv_data = d; |
498 |
d->dev.handler = dev_c3725_iofpga_access; |
499 |
|
500 |
/* Map this device to the VM */ |
501 |
vm_bind_device(router->vm,&d->dev); |
502 |
vm_object_add(vm,&d->vm_obj); |
503 |
return(0); |
504 |
} |