1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
/*************************************************************
IBM 21S850 IEEE-1394 400Mb/s 1-Port PHY
IBM 21S851 IEEE-1394 400Mb/s 3-Port PHY
Skeleton device
**************************************************************/
#include "emu.h"
#include "ibm21s850.h"
#define LOG_READS (1 << 1)
#define LOG_WRITES (1 << 2)
#define LOG_UNKNOWNS (1 << 3)
#define LOG_ALL (LOG_READS | LOG_WRITES | LOG_UNKNOWNS)
#define VERBOSE (LOG_ALL)
#include "logmacro.h"
DEFINE_DEVICE_TYPE(IBM21S850, ibm21s850_device, "ibm21s850", "IBM 21S850 IEEE-1394 1-Port PHY")
DEFINE_DEVICE_TYPE(IBM21S851, ibm21s851_device, "ibm21s851", "IBM 21S850 IEEE-1394 3-Port PHY")
ibm21s85x_base_device::ibm21s85x_base_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, type, tag, owner, clock)
, m_reset_cb(*this)
{
}
ibm21s850_device::ibm21s850_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: ibm21s85x_base_device(mconfig, IBM21S850, tag, owner, clock)
{
}
ibm21s851_device::ibm21s851_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: ibm21s85x_base_device(mconfig, IBM21S851, tag, owner, clock)
{
}
void ibm21s85x_base_device::device_start()
{
save_item(NAME(m_regs));
m_reset_timer = timer_alloc(FUNC(ibm21s85x_base_device::reset_tick), this);
m_reset_cb.resolve_safe();
}
void ibm21s85x_base_device::device_reset()
{
memset(m_regs, 0, 0x10);
m_regs[ROOT_OFFS] |= ROOT_MASK; // Root node
m_regs[GAP_COUNT_OFFS] |= 0x3f; // Initial reset value
m_regs[SPEED_OFFS] |= SPEED_400MBIT << SPEED_SHIFT; // 21S850 and 21S851 both indicate maximum 400Mb/s rate
m_regs[ENHANCED_REGS_OFFS] |= ENHANCED_REGS_MASK; // 21S850 and 21S851 both have an enhanced register map
m_regs[CABLE_PWR_OFFS] |= CABLE_PWR_MASK; // Cable is powered
m_regs[CONNECTION1_OFFS] |= CONNECTION1_MASK; // Port 1 connected
m_regs[ARB_PHASE_OFFS] |= PHASE_BUS_RESET << ARB_PHASE_OFFS; // Power up in Bus Reset phase
power_on_reset();
}
void ibm21s850_device::device_reset()
{
ibm21s85x_base_device::device_reset();
m_regs[NUM_PORTS_OFFS] |= 0x01; // 1 port available
m_regs[ENV_OFFS] |= 1 << ENV_SHIFT; // Cable PHY environment
m_regs[REG_COUNT_OFFS] |= 0x09; // 9 registers following the standard block on 21S850
}
void ibm21s851_device::device_reset()
{
ibm21s85x_base_device::device_reset();
m_regs[NUM_PORTS_OFFS] |= 0x03; // 3 port available
m_regs[ENV_OFFS] |= 1 << ENV_SHIFT; // Cable PHY environment
m_regs[REG_COUNT_OFFS] |= 0x0b; // 11 registers following the standard block on 21S851
}
TIMER_CALLBACK_MEMBER(ibm21s85x_base_device::reset_tick)
{
if (param)
{
m_reset_cb(0);
m_reset_timer->adjust(attotime::never);
}
else
{
m_reset_cb(1);
m_reset_timer->adjust(attotime::from_usec(26266), 1); // RC reset circuit, 3.3V in, 2.3V out, 10KOhm resistor, 2.2uF capacitor
}
}
uint8_t ibm21s85x_base_device::read(offs_t offset)
{
if (offset < 0x10)
{
LOGMASKED(LOG_READS, "%s: Register %02x read: %02x\n", machine().describe_context(), offset, m_regs[offset]);
return m_regs[offset];
}
LOGMASKED(LOG_READS | LOG_UNKNOWNS, "%s: Unknown Register (%02x) read\n", machine().describe_context(), offset);
return 0;
}
void ibm21s85x_base_device::power_on_reset()
{
m_reset_timer->adjust(attotime::zero, 0);
}
void ibm21s85x_base_device::write(offs_t offset, uint8_t data)
{
switch (offset)
{
default:
LOGMASKED(LOG_WRITES, "%s: Register %02x write (ignored): %02x\n", machine().describe_context(), offset, data);
break;
case 0x01:
LOGMASKED(LOG_WRITES, "%s: Register 01 write: %02x\n", machine().describe_context(), data);
LOGMASKED(LOG_WRITES, "%s: Root Hold-off: %d\n", machine().describe_context(), (data & ROOT_HOLD_MASK) ? 1 : 0);
LOGMASKED(LOG_WRITES, "%s: Initiate Bus Reset: %d\n", machine().describe_context(), (data & BUS_RESET_MASK) ? 1 : 0);
LOGMASKED(LOG_WRITES, "%s: Gap Offset: %02x\n", machine().describe_context(), data & GAP_COUNT_MASK);
if (data & BUS_RESET_MASK)
{
data &= ~BUS_RESET_MASK;
}
m_regs[offset] = data;
break;
case 0x0d:
LOGMASKED(LOG_WRITES, "%s: Register 0d write: %02x\n", machine().describe_context(), data);
LOGMASKED(LOG_WRITES, "%s: Enable L-P Selftest: %d\n", machine().describe_context(), (data & LP_TEST_EN_MASK) ? 1 : 0);
LOGMASKED(LOG_WRITES, "%s: Enable Ack Accel Arbitration: %d\n", machine().describe_context(), (data & ACK_ACCEL_EN_MASK) ? 1 : 0);
LOGMASKED(LOG_WRITES, "%s: Enable Multi-Speed Concat: %d\n", machine().describe_context(), (data & MULTISP_CONCAT_EN_MASK) ? 1 : 0);
LOGMASKED(LOG_WRITES, "%s: Mask LPS Bit: %d\n", machine().describe_context(), (data & MASK_LPS_MASK) ? 1 : 0);
m_regs[offset] = data;
break;
case 0x0e:
LOGMASKED(LOG_WRITES, "%s: Register 0e write: %02x\n", machine().describe_context(), data);
LOGMASKED(LOG_WRITES, "%s: Enable Tx/Rx Timeout: %d\n", machine().describe_context(), (data & EN_TIMEOUT_MASK) ? 1 : 0);
LOGMASKED(LOG_WRITES, "%s: Ignore Unplug: %d\n", machine().describe_context(), (data & IGNORE_UNPLUG_MASK) ? 1 : 0);
LOGMASKED(LOG_WRITES, "%s: Override CMC: %d\n", machine().describe_context(), (data & OVERRIDE_CMC_MASK) ? 1 : 0);
LOGMASKED(LOG_WRITES, "%s: Software CMC: %d\n", machine().describe_context(), (data & SOFT_CMC_MASK) ? 1 : 0);
LOGMASKED(LOG_WRITES, "%s: Disable Port 1: %d\n", machine().describe_context(), (data & DISABLE_P1_MASK) ? 1 : 0);
m_regs[offset] = data;
break;
case 0x0f:
LOGMASKED(LOG_WRITES, "%s: Register 0f write: %02x\n", machine().describe_context(), data);
LOGMASKED(LOG_WRITES, "%s: Soft POR: %d\n", machine().describe_context(), (data & SOFT_POR_MASK) ? 1 : 0);
LOGMASKED(LOG_WRITES, "%s: Send PHY-Link Diag (SID) Packet: %d\n", machine().describe_context(), (data & SEND_PL_DIAG_MASK) ? 1 : 0);
LOGMASKED(LOG_WRITES, "%s: Degate Ack_Acc_Arb: %d\n", machine().describe_context(), (data & ACK_ACCEL_SYNC_MASK) ? 1 : 0);
LOGMASKED(LOG_WRITES, "%s: Initiate Short Bus Reset: %d\n", machine().describe_context(), (data & ISBR_MASK) ? 1 : 0);
if (data & SOFT_POR_MASK)
{
data &= ~SOFT_POR_MASK;
power_on_reset();
}
m_regs[offset] = data;
break;
}
}
|