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
|
/*
* Hisilicon Hi6220 ION Driver
*
* Copyright (c) 2015 Hisilicon Limited.
*
* Author: Chen Feng <puck.chen@hisilicon.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#define pr_fmt(fmt) "Ion: " fmt
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/mm.h>
#include "../ion_priv.h"
#include "../ion.h"
struct hi6220_ion_type_table {
const char *name;
enum ion_heap_type type;
};
static struct hi6220_ion_type_table ion_type_table[] = {
{"ion_system", ION_HEAP_TYPE_SYSTEM},
{"ion_system_contig", ION_HEAP_TYPE_SYSTEM_CONTIG},
{"ion_carveout", ION_HEAP_TYPE_CARVEOUT},
{"ion_chunk", ION_HEAP_TYPE_CHUNK},
{"ion_dma", ION_HEAP_TYPE_DMA},
{"ion_custom", ION_HEAP_TYPE_CUSTOM},
};
static struct ion_device *idev;
static int num_heaps;
static struct ion_heap **heaps;
static struct ion_platform_heap **heaps_data;
static int get_type_by_name(const char *name, enum ion_heap_type *type)
{
int i;
for (i = 0; i < ARRAY_SIZE(ion_type_table); i++) {
if (strncmp(name, ion_type_table[i].name, strlen(name)))
continue;
*type = ion_type_table[i].type;
return 0;
}
return -EINVAL;
}
static int hi6220_set_platform_data(struct platform_device *pdev)
{
unsigned int base;
unsigned int size;
unsigned int id;
const char *heap_name;
const char *type_name;
enum ion_heap_type type;
int ret;
struct device_node *np;
struct ion_platform_heap *p_data;
const struct device_node *dt_node = pdev->dev.of_node;
int index = 0;
for_each_child_of_node(dt_node, np)
num_heaps++;
heaps_data = devm_kzalloc(&pdev->dev,
sizeof(struct ion_platform_heap *) *
num_heaps,
GFP_KERNEL);
if (!heaps_data)
return -ENOMEM;
for_each_child_of_node(dt_node, np) {
ret = of_property_read_string(np, "heap-name", &heap_name);
if (ret < 0) {
pr_err("check the name of node %s\n", np->name);
continue;
}
ret = of_property_read_u32(np, "heap-id", &id);
if (ret < 0) {
pr_err("check the id %s\n", np->name);
continue;
}
ret = of_property_read_u32(np, "heap-base", &base);
if (ret < 0) {
pr_err("check the base of node %s\n", np->name);
continue;
}
ret = of_property_read_u32(np, "heap-size", &size);
if (ret < 0) {
pr_err("check the size of node %s\n", np->name);
continue;
}
ret = of_property_read_string(np, "heap-type", &type_name);
if (ret < 0) {
pr_err("check the type of node %s\n", np->name);
continue;
}
ret = get_type_by_name(type_name, &type);
if (ret < 0) {
pr_err("type name error %s!\n", type_name);
continue;
}
pr_info("heap index %d : name %s base 0x%x size 0x%x id %d type %d\n",
index, heap_name, base, size, id, type);
p_data = devm_kzalloc(&pdev->dev,
sizeof(struct ion_platform_heap),
GFP_KERNEL);
if (!p_data)
return -ENOMEM;
p_data->name = heap_name;
p_data->base = base;
p_data->size = size;
p_data->id = id;
p_data->type = type;
heaps_data[index] = p_data;
index++;
}
return 0;
}
static int hi6220_ion_probe(struct platform_device *pdev)
{
int i;
int err;
static struct ion_platform_heap *p_heap;
idev = ion_device_create(NULL);
err = hi6220_set_platform_data(pdev);
if (err) {
pr_err("ion set platform data error!\n");
goto err_free_idev;
}
heaps = devm_kzalloc(&pdev->dev,
sizeof(struct ion_heap *) * num_heaps,
GFP_KERNEL);
if (!heaps) {
err = -ENOMEM;
goto err_free_idev;
}
/*
* create the heaps as specified in the dts file
*/
for (i = 0; i < num_heaps; i++) {
p_heap = heaps_data[i];
heaps[i] = ion_heap_create(p_heap);
if (IS_ERR_OR_NULL(heaps[i])) {
err = PTR_ERR(heaps[i]);
goto err_free_heaps;
}
ion_device_add_heap(idev, heaps[i]);
pr_info("%s: adding heap %s of type %d with %lx@%lx\n",
__func__, p_heap->name, p_heap->type,
p_heap->base, (unsigned long)p_heap->size);
}
return err;
err_free_heaps:
for (i = 0; i < num_heaps; ++i) {
ion_heap_destroy(heaps[i]);
heaps[i] = NULL;
}
err_free_idev:
ion_device_destroy(idev);
return err;
}
static int hi6220_ion_remove(struct platform_device *pdev)
{
int i;
for (i = 0; i < num_heaps; i++) {
ion_heap_destroy(heaps[i]);
heaps[i] = NULL;
}
ion_device_destroy(idev);
return 0;
}
static const struct of_device_id hi6220_ion_match_table[] = {
{.compatible = "hisilicon,hi6220-ion"},
{},
};
static struct platform_driver hi6220_ion_driver = {
.probe = hi6220_ion_probe,
.remove = hi6220_ion_remove,
.driver = {
.name = "ion-hi6220",
.of_match_table = hi6220_ion_match_table,
},
};
static int __init hi6220_ion_init(void)
{
return platform_driver_register(&hi6220_ion_driver);
}
subsys_initcall(hi6220_ion_init);
|
