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
|
/* Copyright 2015 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <skiboot.h>
#include <device.h>
#include <console.h>
#include <chip.h>
#include <pci-cfg.h>
#include <pci.h>
#include <pci-slot.h>
#include "astbmc.h"
static const struct slot_table_entry *slot_top_table;
void slot_table_init(const struct slot_table_entry *top_table)
{
slot_top_table = top_table;
}
static const struct slot_table_entry *match_slot_phb_entry(struct phb *phb)
{
uint32_t chip_id = dt_get_chip_id(phb->dt_node);
uint32_t phb_idx = dt_prop_get_u32_def(phb->dt_node,
"ibm,phb-index", 0);
const struct slot_table_entry *ent;
if (!slot_top_table)
return NULL;
for (ent = slot_top_table; ent->etype != st_end; ent++) {
if (ent->etype != st_phb) {
prerror("SLOT: Bad DEV entry type in table !\n");
continue;
}
if (ent->location == ST_LOC_PHB(chip_id, phb_idx))
return ent;
}
return NULL;
}
static const struct slot_table_entry *match_slot_dev_entry(struct phb *phb,
struct pci_device *pd)
{
const struct slot_table_entry *parent, *ent;
uint32_t bdfn;
/* Find a parent recursively */
if (pd->parent)
parent = match_slot_dev_entry(phb, pd->parent);
else {
/* No parent, this is a root complex, find the PHB */
parent = match_slot_phb_entry(phb);
}
/* No parent ? Oops ... */
if (!parent || !parent->children)
return NULL;
for (ent = parent->children; ent->etype != st_end; ent++) {
if (ent->etype == st_phb) {
prerror("SLOT: Bad PHB entry type in table !\n");
continue;
}
/* NPU slots match on device, not function */
if (ent->etype == st_npu_slot)
bdfn = pd->bdfn & 0xf8;
else
bdfn = pd->bdfn & 0xffff;
if (ent->location == bdfn)
return ent;
}
return NULL;
}
static void slot_table_add_properties(struct pci_slot *slot,
struct dt_node *np)
{
struct phb *phb = slot->phb;
struct pci_device *pd = slot->pd;
struct slot_table_entry *ent = slot->data;
size_t base_loc_code_len, slot_label_len;
char label[8], loc_code[LOC_CODE_SIZE];
if (!np)
return;
if (ent) {
dt_add_property_string(np, "ibm,slot-label", ent->name);
slot_label_len = strlen(ent->name);
} else {
snprintf(label, 8, "S%04x%02x", phb->opal_id, pd->secondary_bus);
dt_add_property_string(np, "ibm,slot-label", label);
slot_label_len = strlen(label);
}
base_loc_code_len = phb->base_loc_code ? strlen(phb->base_loc_code) : 0;
if ((base_loc_code_len + slot_label_len + 1) >= LOC_CODE_SIZE)
return;
/* Location code */
if (phb->base_loc_code) {
strcpy(loc_code, phb->base_loc_code);
strcat(loc_code, "-");
} else {
loc_code[0] = '\0';
}
if (ent)
strcat(loc_code, ent->name);
else
strcat(loc_code, label);
dt_add_property(np, "ibm,slot-location-code",
loc_code, strlen(loc_code) + 1);
}
void slot_table_get_slot_info(struct phb *phb, struct pci_device *pd)
{
const struct slot_table_entry *ent;
struct pci_slot *slot;
if (!pd || pd->slot)
return;
ent = match_slot_dev_entry(phb, pd);
if (!ent || !ent->name) {
slot = pcie_slot_create_dynamic(phb, pd);
if (slot) {
slot->ops.add_properties = slot_table_add_properties;
slot->pluggable = true;
}
return;
}
slot = pcie_slot_create(phb, pd);
assert(slot);
slot->pluggable = !!(ent->etype == st_pluggable_slot);
slot->ops.add_properties = slot_table_add_properties;
slot->data = (void *)ent;
}
static int __pci_find_dev_by_location(struct phb *phb,
struct pci_device *pd, void *userdata)
{
uint16_t location = *((uint16_t *)userdata);
if (!phb || !pd)
return 0;
if ((pd->bdfn & 0xff) == location)
return 1;
return 0;
}
static struct pci_device *pci_find_dev_by_location(struct phb *phb, uint16_t location)
{
return pci_walk_dev(phb, NULL, __pci_find_dev_by_location, &location);
}
static struct phb* get_phb_by_location(uint32_t location)
{
struct phb *phb = NULL;
uint32_t chip_id, phb_idx;
for_each_phb(phb) {
chip_id = dt_get_chip_id(phb->dt_node);
phb_idx = dt_prop_get_u32_def(phb->dt_node,
"ibm,phb-index", 0);
if (location == ST_LOC_PHB(chip_id, phb_idx))
break;
}
return phb;
}
static int check_slot_table(struct phb *phb,
const struct slot_table_entry *parent)
{
const struct slot_table_entry *ent;
struct pci_device *dev = NULL;
int r = 0;
if (parent == NULL)
return 0;
for (ent = parent; ent->etype != st_end; ent++) {
switch (ent->etype) {
case st_phb:
phb = get_phb_by_location(ent->location);
if (!phb) {
prlog(PR_ERR, "PCI: PHB %s (%x) not found\n",
ent->name, ent->location);
r++;
}
break;
case st_pluggable_slot:
case st_builtin_dev:
if (!phb)
break;
phb_lock(phb);
dev = pci_find_dev_by_location(phb, ent->location);
phb_unlock(phb);
if (!dev) {
prlog(PR_ERR, "PCI: built-in device not found: %s (loc: %x)\n",
ent->name, ent->location);
r++;
}
break;
case st_end:
case st_npu_slot:
break;
}
if (ent->children)
r+= check_slot_table(phb, ent->children);
}
return r;
}
void check_all_slot_table(void)
{
if (!slot_top_table)
return;
prlog(PR_DEBUG, "PCI: Checking slot table against detected devices\n");
check_slot_table(NULL, slot_top_table);
}
|