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
|
/*
* Copyright 2012 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Ben Skeggs
*/
#include "gf100.h"
#include <core/memory.h>
#include <core/option.h>
#include <subdev/fb.h>
#include <subdev/mmu.h>
struct nvkm_vmm *
gf100_bar_bar1_vmm(struct nvkm_bar *base)
{
return gf100_bar(base)->bar[1].vmm;
}
void
gf100_bar_bar1_wait(struct nvkm_bar *base)
{
/* NFI why it's twice. */
nvkm_bar_flush(base);
nvkm_bar_flush(base);
}
void
gf100_bar_bar1_fini(struct nvkm_bar *bar)
{
nvkm_mask(bar->subdev.device, 0x001704, 0x80000000, 0x00000000);
}
void
gf100_bar_bar1_init(struct nvkm_bar *base)
{
struct nvkm_device *device = base->subdev.device;
struct gf100_bar *bar = gf100_bar(base);
const u32 addr = nvkm_memory_addr(bar->bar[1].inst) >> 12;
nvkm_wr32(device, 0x001704, 0x80000000 | addr);
}
struct nvkm_vmm *
gf100_bar_bar2_vmm(struct nvkm_bar *base)
{
return gf100_bar(base)->bar[0].vmm;
}
void
gf100_bar_bar2_fini(struct nvkm_bar *bar)
{
nvkm_mask(bar->subdev.device, 0x001714, 0x80000000, 0x00000000);
}
void
gf100_bar_bar2_init(struct nvkm_bar *base)
{
struct nvkm_device *device = base->subdev.device;
struct gf100_bar *bar = gf100_bar(base);
u32 addr = nvkm_memory_addr(bar->bar[0].inst) >> 12;
if (bar->bar2_halve)
addr |= 0x40000000;
nvkm_wr32(device, 0x001714, 0x80000000 | addr);
}
static int
gf100_bar_oneinit_bar(struct gf100_bar *bar, struct gf100_barN *bar_vm,
struct lock_class_key *key, int bar_nr)
{
struct nvkm_device *device = bar->base.subdev.device;
resource_size_t bar_len;
int ret;
ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x1000, 0, false,
&bar_vm->inst);
if (ret)
return ret;
bar_len = device->func->resource_size(device, bar_nr);
if (bar_nr == 3 && bar->bar2_halve)
bar_len >>= 1;
ret = nvkm_vmm_new(device, 0, bar_len, NULL, 0, key,
(bar_nr == 3) ? "bar2" : "bar1", &bar_vm->vmm);
if (ret)
return ret;
atomic_inc(&bar_vm->vmm->engref[NVKM_SUBDEV_BAR]);
bar_vm->vmm->debug = bar->base.subdev.debug;
/*
* Bootstrap page table lookup.
*/
if (bar_nr == 3) {
ret = nvkm_vmm_boot(bar_vm->vmm);
if (ret)
return ret;
}
return nvkm_vmm_join(bar_vm->vmm, bar_vm->inst);
}
int
gf100_bar_oneinit(struct nvkm_bar *base)
{
static struct lock_class_key bar1_lock;
static struct lock_class_key bar2_lock;
struct gf100_bar *bar = gf100_bar(base);
int ret;
/* BAR2 */
if (bar->base.func->bar2.init) {
ret = gf100_bar_oneinit_bar(bar, &bar->bar[0], &bar2_lock, 3);
if (ret)
return ret;
bar->base.subdev.oneinit = true;
nvkm_bar_bar2_init(bar->base.subdev.device);
}
/* BAR1 */
ret = gf100_bar_oneinit_bar(bar, &bar->bar[1], &bar1_lock, 1);
if (ret)
return ret;
return 0;
}
void *
gf100_bar_dtor(struct nvkm_bar *base)
{
struct gf100_bar *bar = gf100_bar(base);
nvkm_vmm_part(bar->bar[1].vmm, bar->bar[1].inst);
nvkm_vmm_unref(&bar->bar[1].vmm);
nvkm_memory_unref(&bar->bar[1].inst);
nvkm_vmm_part(bar->bar[0].vmm, bar->bar[0].inst);
nvkm_vmm_unref(&bar->bar[0].vmm);
nvkm_memory_unref(&bar->bar[0].inst);
return bar;
}
int
gf100_bar_new_(const struct nvkm_bar_func *func, struct nvkm_device *device,
int index, struct nvkm_bar **pbar)
{
struct gf100_bar *bar;
if (!(bar = kzalloc(sizeof(*bar), GFP_KERNEL)))
return -ENOMEM;
nvkm_bar_ctor(func, device, index, &bar->base);
bar->bar2_halve = nvkm_boolopt(device->cfgopt, "NvBar2Halve", false);
*pbar = &bar->base;
return 0;
}
static const struct nvkm_bar_func
gf100_bar_func = {
.dtor = gf100_bar_dtor,
.oneinit = gf100_bar_oneinit,
.bar1.init = gf100_bar_bar1_init,
.bar1.fini = gf100_bar_bar1_fini,
.bar1.wait = gf100_bar_bar1_wait,
.bar1.vmm = gf100_bar_bar1_vmm,
.bar2.init = gf100_bar_bar2_init,
.bar2.fini = gf100_bar_bar2_fini,
.bar2.wait = gf100_bar_bar1_wait,
.bar2.vmm = gf100_bar_bar2_vmm,
.flush = g84_bar_flush,
};
int
gf100_bar_new(struct nvkm_device *device, int index, struct nvkm_bar **pbar)
{
return gf100_bar_new_(&gf100_bar_func, device, index, pbar);
}
|
