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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
|
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2004 Silicon Graphics, Inc. All rights reserved.
*/
#include <linux/interrupt.h>
#include <linux/types.h>
#include <asm/sn/io.h>
#include <asm/sn/pcibr_provider.h>
#include <asm/sn/pcibus_provider_defs.h>
#include <asm/sn/pcidev.h>
#include <asm/sn/pic.h>
#include <asm/sn/tiocp.h>
union br_ptr {
struct tiocp tio;
struct pic pic;
};
/*
* Control Register Access -- Read/Write 0000_0020
*/
void pcireg_control_bit_clr(struct pcibus_info *pcibus_info, uint64_t bits)
{
union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
if (pcibus_info) {
switch (pcibus_info->pbi_bridge_type) {
case PCIBR_BRIDGETYPE_TIOCP:
__sn_clrq_relaxed(&ptr->tio.cp_control, bits);
break;
case PCIBR_BRIDGETYPE_PIC:
__sn_clrq_relaxed(&ptr->pic.p_wid_control, bits);
break;
default:
panic
("pcireg_control_bit_clr: unknown bridgetype bridge 0x%p",
(void *)ptr);
}
}
}
void pcireg_control_bit_set(struct pcibus_info *pcibus_info, uint64_t bits)
{
union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
if (pcibus_info) {
switch (pcibus_info->pbi_bridge_type) {
case PCIBR_BRIDGETYPE_TIOCP:
__sn_setq_relaxed(&ptr->tio.cp_control, bits);
break;
case PCIBR_BRIDGETYPE_PIC:
__sn_setq_relaxed(&ptr->pic.p_wid_control, bits);
break;
default:
panic
("pcireg_control_bit_set: unknown bridgetype bridge 0x%p",
(void *)ptr);
}
}
}
/*
* PCI/PCIX Target Flush Register Access -- Read Only 0000_0050
*/
uint64_t pcireg_tflush_get(struct pcibus_info *pcibus_info)
{
union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
uint64_t ret = 0;
if (pcibus_info) {
switch (pcibus_info->pbi_bridge_type) {
case PCIBR_BRIDGETYPE_TIOCP:
ret = __sn_readq_relaxed(&ptr->tio.cp_tflush);
break;
case PCIBR_BRIDGETYPE_PIC:
ret = __sn_readq_relaxed(&ptr->pic.p_wid_tflush);
break;
default:
panic
("pcireg_tflush_get: unknown bridgetype bridge 0x%p",
(void *)ptr);
}
}
/* Read of the Target Flush should always return zero */
if (ret != 0)
panic("pcireg_tflush_get:Target Flush failed\n");
return ret;
}
/*
* Interrupt Status Register Access -- Read Only 0000_0100
*/
uint64_t pcireg_intr_status_get(struct pcibus_info * pcibus_info)
{
union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
uint64_t ret = 0;
if (pcibus_info) {
switch (pcibus_info->pbi_bridge_type) {
case PCIBR_BRIDGETYPE_TIOCP:
ret = __sn_readq_relaxed(&ptr->tio.cp_int_status);
break;
case PCIBR_BRIDGETYPE_PIC:
ret = __sn_readq_relaxed(&ptr->pic.p_int_status);
break;
default:
panic
("pcireg_intr_status_get: unknown bridgetype bridge 0x%p",
(void *)ptr);
}
}
return ret;
}
/*
* Interrupt Enable Register Access -- Read/Write 0000_0108
*/
void pcireg_intr_enable_bit_clr(struct pcibus_info *pcibus_info, uint64_t bits)
{
union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
if (pcibus_info) {
switch (pcibus_info->pbi_bridge_type) {
case PCIBR_BRIDGETYPE_TIOCP:
__sn_clrq_relaxed(&ptr->tio.cp_int_enable, bits);
break;
case PCIBR_BRIDGETYPE_PIC:
__sn_clrq_relaxed(&ptr->pic.p_int_enable, bits);
break;
default:
panic
("pcireg_intr_enable_bit_clr: unknown bridgetype bridge 0x%p",
(void *)ptr);
}
}
}
void pcireg_intr_enable_bit_set(struct pcibus_info *pcibus_info, uint64_t bits)
{
union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
if (pcibus_info) {
switch (pcibus_info->pbi_bridge_type) {
case PCIBR_BRIDGETYPE_TIOCP:
__sn_setq_relaxed(&ptr->tio.cp_int_enable, bits);
break;
case PCIBR_BRIDGETYPE_PIC:
__sn_setq_relaxed(&ptr->pic.p_int_enable, bits);
break;
default:
panic
("pcireg_intr_enable_bit_set: unknown bridgetype bridge 0x%p",
(void *)ptr);
}
}
}
/*
* Intr Host Address Register (int_addr) -- Read/Write 0000_0130 - 0000_0168
*/
void pcireg_intr_addr_addr_set(struct pcibus_info *pcibus_info, int int_n,
uint64_t addr)
{
union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
if (pcibus_info) {
switch (pcibus_info->pbi_bridge_type) {
case PCIBR_BRIDGETYPE_TIOCP:
__sn_clrq_relaxed(&ptr->tio.cp_int_addr[int_n],
TIOCP_HOST_INTR_ADDR);
__sn_setq_relaxed(&ptr->tio.cp_int_addr[int_n],
(addr & TIOCP_HOST_INTR_ADDR));
break;
case PCIBR_BRIDGETYPE_PIC:
__sn_clrq_relaxed(&ptr->pic.p_int_addr[int_n],
PIC_HOST_INTR_ADDR);
__sn_setq_relaxed(&ptr->pic.p_int_addr[int_n],
(addr & PIC_HOST_INTR_ADDR));
break;
default:
panic
("pcireg_intr_addr_addr_get: unknown bridgetype bridge 0x%p",
(void *)ptr);
}
}
}
/*
* Force Interrupt Register Access -- Write Only 0000_01C0 - 0000_01F8
*/
void pcireg_force_intr_set(struct pcibus_info *pcibus_info, int int_n)
{
union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
if (pcibus_info) {
switch (pcibus_info->pbi_bridge_type) {
case PCIBR_BRIDGETYPE_TIOCP:
writeq(1, &ptr->tio.cp_force_pin[int_n]);
break;
case PCIBR_BRIDGETYPE_PIC:
writeq(1, &ptr->pic.p_force_pin[int_n]);
break;
default:
panic
("pcireg_force_intr_set: unknown bridgetype bridge 0x%p",
(void *)ptr);
}
}
}
/*
* Device(x) Write Buffer Flush Reg Access -- Read Only 0000_0240 - 0000_0258
*/
uint64_t pcireg_wrb_flush_get(struct pcibus_info *pcibus_info, int device)
{
union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
uint64_t ret = 0;
if (pcibus_info) {
switch (pcibus_info->pbi_bridge_type) {
case PCIBR_BRIDGETYPE_TIOCP:
ret =
__sn_readq_relaxed(&ptr->tio.cp_wr_req_buf[device]);
break;
case PCIBR_BRIDGETYPE_PIC:
ret =
__sn_readq_relaxed(&ptr->pic.p_wr_req_buf[device]);
break;
default:
panic("pcireg_wrb_flush_get: unknown bridgetype bridge 0x%p", (void *)ptr);
}
}
/* Read of the Write Buffer Flush should always return zero */
return ret;
}
void pcireg_int_ate_set(struct pcibus_info *pcibus_info, int ate_index,
uint64_t val)
{
union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
if (pcibus_info) {
switch (pcibus_info->pbi_bridge_type) {
case PCIBR_BRIDGETYPE_TIOCP:
writeq(val, &ptr->tio.cp_int_ate_ram[ate_index]);
break;
case PCIBR_BRIDGETYPE_PIC:
writeq(val, &ptr->pic.p_int_ate_ram[ate_index]);
break;
default:
panic
("pcireg_int_ate_set: unknown bridgetype bridge 0x%p",
(void *)ptr);
}
}
}
uint64_t *pcireg_int_ate_addr(struct pcibus_info *pcibus_info, int ate_index)
{
union br_ptr *ptr = (union br_ptr *)pcibus_info->pbi_buscommon.bs_base;
uint64_t *ret = (uint64_t *) 0;
if (pcibus_info) {
switch (pcibus_info->pbi_bridge_type) {
case PCIBR_BRIDGETYPE_TIOCP:
ret = &ptr->tio.cp_int_ate_ram[ate_index];
break;
case PCIBR_BRIDGETYPE_PIC:
ret = &ptr->pic.p_int_ate_ram[ate_index];
break;
default:
panic
("pcireg_int_ate_addr: unknown bridgetype bridge 0x%p",
(void *)ptr);
}
}
return ret;
}
|
