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
|
/*
* Copyright 2008 Advanced Micro Devices, Inc.
* Copyright 2008 Red Hat Inc.
* Copyright 2009 Jerome Glisse.
*
* 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: Dave Airlie
* Alex Deucher
* Jerome Glisse
*/
#include "drmP.h"
#include "radeon_drm.h"
#include "radeon.h"
#include "radeon_reg.h"
/*
* Common GART table functions.
*/
int radeon_gart_table_ram_alloc(struct radeon_device *rdev)
{
void *ptr;
ptr = pci_alloc_consistent(rdev->pdev, rdev->gart.table_size,
&rdev->gart.table_addr);
if (ptr == NULL) {
return -ENOMEM;
}
#ifdef CONFIG_X86
if (rdev->family == CHIP_RS400 || rdev->family == CHIP_RS480 ||
rdev->family == CHIP_RS690 || rdev->family == CHIP_RS740) {
set_memory_uc((unsigned long)ptr,
rdev->gart.table_size >> PAGE_SHIFT);
}
#endif
rdev->gart.table.ram.ptr = ptr;
memset((void *)rdev->gart.table.ram.ptr, 0, rdev->gart.table_size);
return 0;
}
void radeon_gart_table_ram_free(struct radeon_device *rdev)
{
if (rdev->gart.table.ram.ptr == NULL) {
return;
}
#ifdef CONFIG_X86
if (rdev->family == CHIP_RS400 || rdev->family == CHIP_RS480 ||
rdev->family == CHIP_RS690 || rdev->family == CHIP_RS740) {
set_memory_wb((unsigned long)rdev->gart.table.ram.ptr,
rdev->gart.table_size >> PAGE_SHIFT);
}
#endif
pci_free_consistent(rdev->pdev, rdev->gart.table_size,
(void *)rdev->gart.table.ram.ptr,
rdev->gart.table_addr);
rdev->gart.table.ram.ptr = NULL;
rdev->gart.table_addr = 0;
}
int radeon_gart_table_vram_alloc(struct radeon_device *rdev)
{
int r;
if (rdev->gart.table.vram.robj == NULL) {
r = radeon_object_create(rdev, NULL,
rdev->gart.table_size,
true,
RADEON_GEM_DOMAIN_VRAM,
false, &rdev->gart.table.vram.robj);
if (r) {
return r;
}
}
return 0;
}
int radeon_gart_table_vram_pin(struct radeon_device *rdev)
{
uint64_t gpu_addr;
int r;
r = radeon_object_pin(rdev->gart.table.vram.robj,
RADEON_GEM_DOMAIN_VRAM, &gpu_addr);
if (r) {
radeon_object_unref(&rdev->gart.table.vram.robj);
return r;
}
r = radeon_object_kmap(rdev->gart.table.vram.robj,
(void **)&rdev->gart.table.vram.ptr);
if (r) {
radeon_object_unpin(rdev->gart.table.vram.robj);
radeon_object_unref(&rdev->gart.table.vram.robj);
DRM_ERROR("radeon: failed to map gart vram table.\n");
return r;
}
rdev->gart.table_addr = gpu_addr;
return 0;
}
void radeon_gart_table_vram_free(struct radeon_device *rdev)
{
if (rdev->gart.table.vram.robj == NULL) {
return;
}
radeon_object_kunmap(rdev->gart.table.vram.robj);
radeon_object_unpin(rdev->gart.table.vram.robj);
radeon_object_unref(&rdev->gart.table.vram.robj);
}
/*
* Common gart functions.
*/
void radeon_gart_unbind(struct radeon_device *rdev, unsigned offset,
int pages)
{
unsigned t;
unsigned p;
int i, j;
if (!rdev->gart.ready) {
WARN(1, "trying to unbind memory to unitialized GART !\n");
return;
}
t = offset / RADEON_GPU_PAGE_SIZE;
p = t / (PAGE_SIZE / RADEON_GPU_PAGE_SIZE);
for (i = 0; i < pages; i++, p++) {
if (rdev->gart.pages[p]) {
pci_unmap_page(rdev->pdev, rdev->gart.pages_addr[p],
PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
rdev->gart.pages[p] = NULL;
rdev->gart.pages_addr[p] = 0;
for (j = 0; j < (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); j++, t++) {
radeon_gart_set_page(rdev, t, 0);
}
}
}
mb();
radeon_gart_tlb_flush(rdev);
}
int radeon_gart_bind(struct radeon_device *rdev, unsigned offset,
int pages, struct page **pagelist)
{
unsigned t;
unsigned p;
uint64_t page_base;
int i, j;
if (!rdev->gart.ready) {
DRM_ERROR("trying to bind memory to unitialized GART !\n");
return -EINVAL;
}
t = offset / RADEON_GPU_PAGE_SIZE;
p = t / (PAGE_SIZE / RADEON_GPU_PAGE_SIZE);
for (i = 0; i < pages; i++, p++) {
/* we need to support large memory configurations */
/* assume that unbind have already been call on the range */
rdev->gart.pages_addr[p] = pci_map_page(rdev->pdev, pagelist[i],
0, PAGE_SIZE,
PCI_DMA_BIDIRECTIONAL);
if (pci_dma_mapping_error(rdev->pdev, rdev->gart.pages_addr[p])) {
/* FIXME: failed to map page (return -ENOMEM?) */
radeon_gart_unbind(rdev, offset, pages);
return -ENOMEM;
}
rdev->gart.pages[p] = pagelist[i];
page_base = rdev->gart.pages_addr[p];
for (j = 0; j < (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); j++, t++) {
radeon_gart_set_page(rdev, t, page_base);
page_base += RADEON_GPU_PAGE_SIZE;
}
}
mb();
radeon_gart_tlb_flush(rdev);
return 0;
}
int radeon_gart_init(struct radeon_device *rdev)
{
if (rdev->gart.pages) {
return 0;
}
/* We need PAGE_SIZE >= RADEON_GPU_PAGE_SIZE */
if (PAGE_SIZE < RADEON_GPU_PAGE_SIZE) {
DRM_ERROR("Page size is smaller than GPU page size!\n");
return -EINVAL;
}
/* Compute table size */
rdev->gart.num_cpu_pages = rdev->mc.gtt_size / PAGE_SIZE;
rdev->gart.num_gpu_pages = rdev->mc.gtt_size / RADEON_GPU_PAGE_SIZE;
DRM_INFO("GART: num cpu pages %u, num gpu pages %u\n",
rdev->gart.num_cpu_pages, rdev->gart.num_gpu_pages);
/* Allocate pages table */
rdev->gart.pages = kzalloc(sizeof(void *) * rdev->gart.num_cpu_pages,
GFP_KERNEL);
if (rdev->gart.pages == NULL) {
radeon_gart_fini(rdev);
return -ENOMEM;
}
rdev->gart.pages_addr = kzalloc(sizeof(dma_addr_t) *
rdev->gart.num_cpu_pages, GFP_KERNEL);
if (rdev->gart.pages_addr == NULL) {
radeon_gart_fini(rdev);
return -ENOMEM;
}
return 0;
}
void radeon_gart_fini(struct radeon_device *rdev)
{
if (rdev->gart.pages && rdev->gart.pages_addr && rdev->gart.ready) {
/* unbind pages */
radeon_gart_unbind(rdev, 0, rdev->gart.num_cpu_pages);
}
rdev->gart.ready = false;
kfree(rdev->gart.pages);
kfree(rdev->gart.pages_addr);
rdev->gart.pages = NULL;
rdev->gart.pages_addr = NULL;
}
|
