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
|
/*
* Copyright 2019 Advanced Micro Devices, 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.
*/
#include "amdgpu_vm.h"
#include "amdgpu_object.h"
#include "amdgpu_trace.h"
/**
* amdgpu_vm_cpu_map_table - make sure new PDs/PTs are kmapped
*
* @table: newly allocated or validated PD/PT
*/
static int amdgpu_vm_cpu_map_table(struct amdgpu_bo *table)
{
return amdgpu_bo_kmap(table, NULL);
}
/**
* amdgpu_vm_cpu_prepare - prepare page table update with the CPU
*
* @p: see amdgpu_vm_update_params definition
* @resv: reservation object with embedded fence
* @sync_mode: synchronization mode
*
* Returns:
* Negativ errno, 0 for success.
*/
static int amdgpu_vm_cpu_prepare(struct amdgpu_vm_update_params *p,
struct dma_resv *resv,
enum amdgpu_sync_mode sync_mode)
{
if (!resv)
return 0;
return amdgpu_bo_sync_wait_resv(p->adev, resv, sync_mode, p->vm, true);
}
/**
* amdgpu_vm_cpu_update - helper to update page tables via CPU
*
* @p: see amdgpu_vm_update_params definition
* @bo: PD/PT to update
* @pe: byte offset of the PDE/PTE, relative to start of PDB/PTB
* @addr: dst addr to write into pe
* @count: number of page entries to update
* @incr: increase next addr by incr bytes
* @flags: hw access flags
*
* Write count number of PT/PD entries directly.
*/
static int amdgpu_vm_cpu_update(struct amdgpu_vm_update_params *p,
struct amdgpu_bo *bo, uint64_t pe,
uint64_t addr, unsigned count, uint32_t incr,
uint64_t flags)
{
unsigned int i;
uint64_t value;
int r;
if (bo->tbo.moving) {
r = dma_fence_wait(bo->tbo.moving, true);
if (r)
return r;
}
pe += (unsigned long)amdgpu_bo_kptr(bo);
trace_amdgpu_vm_set_ptes(pe, addr, count, incr, flags, p->immediate);
for (i = 0; i < count; i++) {
value = p->pages_addr ?
amdgpu_vm_map_gart(p->pages_addr, addr) :
addr;
amdgpu_gmc_set_pte_pde(p->adev, (void *)(uintptr_t)pe,
i, value, flags);
addr += incr;
}
return 0;
}
/**
* amdgpu_vm_cpu_commit - commit page table update to the HW
*
* @p: see amdgpu_vm_update_params definition
* @fence: unused
*
* Make sure that the hardware sees the page table updates.
*/
static int amdgpu_vm_cpu_commit(struct amdgpu_vm_update_params *p,
struct dma_fence **fence)
{
/* Flush HDP */
mb();
amdgpu_asic_flush_hdp(p->adev, NULL);
return 0;
}
const struct amdgpu_vm_update_funcs amdgpu_vm_cpu_funcs = {
.map_table = amdgpu_vm_cpu_map_table,
.prepare = amdgpu_vm_cpu_prepare,
.update = amdgpu_vm_cpu_update,
.commit = amdgpu_vm_cpu_commit
};
|
