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
|
From 9c756526a8640af0cd646c69ea35841746a2d9b7 Mon Sep 17 00:00:00 2001
From: Eryk Brol <eryk.brol@amd.com>
Date: Mon, 21 Jan 2019 14:40:16 -0500
Subject: [PATCH 1221/2940] drm/amd/display: DC VM Fixes
[Why]
VM_helper needs to be intialized with the dc struct in order to fix
an unallocated memory issue. System aperture settings should be
initialized to 0 and guarded with a check to make sure vm_config
is valid.
[How]
Allocate and free memory for vm_helper with other dc members.
Check whether the vm_config valid bit is set before initializing
aperture settings.
Change-Id: I9083eb884492cb16ca767b03eeed41e46277133c
Signed-off-by: Eryk Brol <eryk.brol@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc.c | 1 -
.../gpu/drm/amd/display/dc/core/dc_vm_helper.c | 18 +++++++-----------
drivers/gpu/drm/amd/display/dc/dc.h | 1 -
drivers/gpu/drm/amd/display/dc/inc/vm_helper.h | 7 ++++---
4 files changed, 11 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 7d79b8ed5702..3a83f24998c4 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -621,7 +621,6 @@ static bool construct(struct dc *dc,
#endif
enum dce_version dc_version = DCE_VERSION_UNKNOWN;
-
dc_dceip = kzalloc(sizeof(*dc_dceip), GFP_KERNEL);
if (!dc_dceip) {
dm_error("%s: failed to create dceip\n", __func__);
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_vm_helper.c b/drivers/gpu/drm/amd/display/dc/core/dc_vm_helper.c
index e54b8ac339b2..6ce87b682a32 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_vm_helper.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_vm_helper.c
@@ -112,16 +112,12 @@ uint8_t get_vmid_for_ptb(struct vm_helper *vm_helper, int64_t ptb, uint8_t hubp_
return vmid;
}
-struct vm_helper init_vm_helper(unsigned int num_vmid, unsigned int num_hubp)
+void init_vm_helper(struct vm_helper *vm_helper, unsigned int num_vmid, unsigned int num_hubp)
{
- static uint64_t ptb_assigned_to_vmid[MAX_VMID];
- static struct vmid_usage hubp_vmid_usage[MAX_HUBP];
-
- return (struct vm_helper){
- .num_vmid = num_vmid,
- .num_hubp = num_hubp,
- .num_vmids_available = num_vmid - 1,
- .ptb_assigned_to_vmid = ptb_assigned_to_vmid,
- .hubp_vmid_usage = hubp_vmid_usage
- };
+ vm_helper->num_vmid = num_vmid;
+ vm_helper->num_hubp = num_hubp;
+ vm_helper->num_vmids_available = num_vmid - 1;
+
+ memset(vm_helper->hubp_vmid_usage, 0, sizeof(vm_helper->hubp_vmid_usage[0]) * MAX_HUBP);
+ memset(vm_helper->ptb_assigned_to_vmid, 0, sizeof(vm_helper->ptb_assigned_to_vmid[0]) * MAX_VMID);
}
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 8b9a901491a7..fa6c90bda67d 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -265,7 +265,6 @@ struct dc_debug_data {
uint32_t auxErrorCount;
};
-
struct dc_state;
struct resource_pool;
struct dce_hwseq;
diff --git a/drivers/gpu/drm/amd/display/dc/inc/vm_helper.h b/drivers/gpu/drm/amd/display/dc/inc/vm_helper.h
index a202206e22a3..193407f76a80 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/vm_helper.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/vm_helper.h
@@ -39,8 +39,8 @@ struct vm_helper {
unsigned int num_vmid;
unsigned int num_hubp;
unsigned int num_vmids_available;
- uint64_t *ptb_assigned_to_vmid;
- struct vmid_usage *hubp_vmid_usage;
+ uint64_t ptb_assigned_to_vmid[MAX_VMID];
+ struct vmid_usage hubp_vmid_usage[MAX_HUBP];
};
uint8_t get_vmid_for_ptb(
@@ -48,7 +48,8 @@ uint8_t get_vmid_for_ptb(
int64_t ptb,
uint8_t pipe_idx);
-struct vm_helper init_vm_helper(
+void init_vm_helper(
+ struct vm_helper *vm_helper,
unsigned int num_vmid,
unsigned int num_hubp);
--
2.17.1
|
