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
|
/*
* Copyright © 2016 Intel Corporation
*
* 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 (including the next
* paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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 "mock_engine.h"
#include "mock_request.h"
static struct mock_request *first_request(struct mock_engine *engine)
{
return list_first_entry_or_null(&engine->hw_queue,
struct mock_request,
link);
}
static void hw_delay_complete(struct timer_list *t)
{
struct mock_engine *engine = from_timer(engine, t, hw_delay);
struct mock_request *request;
spin_lock(&engine->hw_lock);
request = first_request(engine);
if (request) {
list_del_init(&request->link);
mock_seqno_advance(&engine->base, request->base.global_seqno);
}
request = first_request(engine);
if (request)
mod_timer(&engine->hw_delay, jiffies + request->delay);
spin_unlock(&engine->hw_lock);
}
static struct intel_ring *
mock_context_pin(struct intel_engine_cs *engine,
struct i915_gem_context *ctx)
{
i915_gem_context_get(ctx);
return engine->buffer;
}
static void mock_context_unpin(struct intel_engine_cs *engine,
struct i915_gem_context *ctx)
{
i915_gem_context_put(ctx);
}
static int mock_request_alloc(struct drm_i915_gem_request *request)
{
struct mock_request *mock = container_of(request, typeof(*mock), base);
INIT_LIST_HEAD(&mock->link);
mock->delay = 0;
return 0;
}
static int mock_emit_flush(struct drm_i915_gem_request *request,
unsigned int flags)
{
return 0;
}
static void mock_emit_breadcrumb(struct drm_i915_gem_request *request,
u32 *flags)
{
}
static void mock_submit_request(struct drm_i915_gem_request *request)
{
struct mock_request *mock = container_of(request, typeof(*mock), base);
struct mock_engine *engine =
container_of(request->engine, typeof(*engine), base);
i915_gem_request_submit(request);
GEM_BUG_ON(!request->global_seqno);
spin_lock_irq(&engine->hw_lock);
list_add_tail(&mock->link, &engine->hw_queue);
if (mock->link.prev == &engine->hw_queue)
mod_timer(&engine->hw_delay, jiffies + mock->delay);
spin_unlock_irq(&engine->hw_lock);
}
static struct intel_ring *mock_ring(struct intel_engine_cs *engine)
{
const unsigned long sz = roundup_pow_of_two(sizeof(struct intel_ring));
struct intel_ring *ring;
ring = kzalloc(sizeof(*ring) + sz, GFP_KERNEL);
if (!ring)
return NULL;
ring->size = sz;
ring->effective_size = sz;
ring->vaddr = (void *)(ring + 1);
INIT_LIST_HEAD(&ring->request_list);
intel_ring_update_space(ring);
return ring;
}
struct intel_engine_cs *mock_engine(struct drm_i915_private *i915,
const char *name,
int id)
{
struct mock_engine *engine;
GEM_BUG_ON(id >= I915_NUM_ENGINES);
engine = kzalloc(sizeof(*engine) + PAGE_SIZE, GFP_KERNEL);
if (!engine)
return NULL;
engine->base.buffer = mock_ring(&engine->base);
if (!engine->base.buffer) {
kfree(engine);
return NULL;
}
/* minimal engine setup for requests */
engine->base.i915 = i915;
snprintf(engine->base.name, sizeof(engine->base.name), "%s", name);
engine->base.id = id;
engine->base.status_page.page_addr = (void *)(engine + 1);
engine->base.context_pin = mock_context_pin;
engine->base.context_unpin = mock_context_unpin;
engine->base.request_alloc = mock_request_alloc;
engine->base.emit_flush = mock_emit_flush;
engine->base.emit_breadcrumb = mock_emit_breadcrumb;
engine->base.submit_request = mock_submit_request;
engine->base.timeline =
&i915->gt.global_timeline.engine[engine->base.id];
intel_engine_init_breadcrumbs(&engine->base);
engine->base.breadcrumbs.mock = true; /* prevent touching HW for irqs */
/* fake hw queue */
spin_lock_init(&engine->hw_lock);
timer_setup(&engine->hw_delay, hw_delay_complete, 0);
INIT_LIST_HEAD(&engine->hw_queue);
return &engine->base;
}
void mock_engine_flush(struct intel_engine_cs *engine)
{
struct mock_engine *mock =
container_of(engine, typeof(*mock), base);
struct mock_request *request, *rn;
del_timer_sync(&mock->hw_delay);
spin_lock_irq(&mock->hw_lock);
list_for_each_entry_safe(request, rn, &mock->hw_queue, link) {
list_del_init(&request->link);
mock_seqno_advance(&mock->base, request->base.global_seqno);
}
spin_unlock_irq(&mock->hw_lock);
}
void mock_engine_reset(struct intel_engine_cs *engine)
{
intel_write_status_page(engine, I915_GEM_HWS_INDEX, 0);
}
void mock_engine_free(struct intel_engine_cs *engine)
{
struct mock_engine *mock =
container_of(engine, typeof(*mock), base);
GEM_BUG_ON(timer_pending(&mock->hw_delay));
if (engine->last_retired_context)
engine->context_unpin(engine, engine->last_retired_context);
intel_engine_fini_breadcrumbs(engine);
kfree(engine->buffer);
kfree(engine);
}
|
