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
|
// SPDX-License-Identifier: MIT
/*
* Copyright 2023, Intel Corporation.
*/
#include "gem/i915_gem_internal.h"
#include "gem/i915_gem_lmem.h"
#include "i915_drv.h"
#include "i915_vma.h"
#include "intel_display_types.h"
#include "intel_dsb_buffer.h"
u32 intel_dsb_buffer_ggtt_offset(struct intel_dsb_buffer *dsb_buf)
{
return i915_ggtt_offset(dsb_buf->vma);
}
void intel_dsb_buffer_write(struct intel_dsb_buffer *dsb_buf, u32 idx, u32 val)
{
dsb_buf->cmd_buf[idx] = val;
}
u32 intel_dsb_buffer_read(struct intel_dsb_buffer *dsb_buf, u32 idx)
{
return dsb_buf->cmd_buf[idx];
}
void intel_dsb_buffer_memset(struct intel_dsb_buffer *dsb_buf, u32 idx, u32 val, size_t size)
{
WARN_ON(idx > (dsb_buf->buf_size - size) / sizeof(*dsb_buf->cmd_buf));
memset(&dsb_buf->cmd_buf[idx], val, size);
}
bool intel_dsb_buffer_create(struct intel_crtc *crtc, struct intel_dsb_buffer *dsb_buf, size_t size)
{
struct drm_i915_private *i915 = to_i915(crtc->base.dev);
struct drm_i915_gem_object *obj;
struct i915_vma *vma;
u32 *buf;
if (HAS_LMEM(i915)) {
obj = i915_gem_object_create_lmem(i915, PAGE_ALIGN(size),
I915_BO_ALLOC_CONTIGUOUS);
if (IS_ERR(obj))
return false;
} else {
obj = i915_gem_object_create_internal(i915, PAGE_ALIGN(size));
if (IS_ERR(obj))
return false;
i915_gem_object_set_cache_coherency(obj, I915_CACHE_NONE);
}
vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, 0);
if (IS_ERR(vma)) {
i915_gem_object_put(obj);
return false;
}
buf = i915_gem_object_pin_map_unlocked(vma->obj, I915_MAP_WC);
if (IS_ERR(buf)) {
i915_vma_unpin_and_release(&vma, I915_VMA_RELEASE_MAP);
return false;
}
dsb_buf->vma = vma;
dsb_buf->cmd_buf = buf;
dsb_buf->buf_size = size;
return true;
}
void intel_dsb_buffer_cleanup(struct intel_dsb_buffer *dsb_buf)
{
i915_vma_unpin_and_release(&dsb_buf->vma, I915_VMA_RELEASE_MAP);
}
void intel_dsb_buffer_flush_map(struct intel_dsb_buffer *dsb_buf)
{
i915_gem_object_flush_map(dsb_buf->vma->obj);
}
|