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
|
/*
* Qualcomm Technologies HIDMA debug file
*
* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/debugfs.h>
#include <linux/device.h>
#include <linux/list.h>
#include <linux/pm_runtime.h>
#include "hidma.h"
static void hidma_ll_chstats(struct seq_file *s, void *llhndl, u32 tre_ch)
{
struct hidma_lldev *lldev = llhndl;
struct hidma_tre *tre;
u32 length;
dma_addr_t src_start;
dma_addr_t dest_start;
u32 *tre_local;
if (tre_ch >= lldev->nr_tres) {
dev_err(lldev->dev, "invalid TRE number in chstats:%d", tre_ch);
return;
}
tre = &lldev->trepool[tre_ch];
seq_printf(s, "------Channel %d -----\n", tre_ch);
seq_printf(s, "allocated=%d\n", atomic_read(&tre->allocated));
seq_printf(s, "queued = 0x%x\n", tre->queued);
seq_printf(s, "err_info = 0x%x\n", tre->err_info);
seq_printf(s, "err_code = 0x%x\n", tre->err_code);
seq_printf(s, "status = 0x%x\n", tre->status);
seq_printf(s, "idx = 0x%x\n", tre->idx);
seq_printf(s, "dma_sig = 0x%x\n", tre->dma_sig);
seq_printf(s, "dev_name=%s\n", tre->dev_name);
seq_printf(s, "callback=%p\n", tre->callback);
seq_printf(s, "data=%p\n", tre->data);
seq_printf(s, "tre_index = 0x%x\n", tre->tre_index);
tre_local = &tre->tre_local[0];
src_start = tre_local[HIDMA_TRE_SRC_LOW_IDX];
src_start = ((u64) (tre_local[HIDMA_TRE_SRC_HI_IDX]) << 32) + src_start;
dest_start = tre_local[HIDMA_TRE_DEST_LOW_IDX];
dest_start += ((u64) (tre_local[HIDMA_TRE_DEST_HI_IDX]) << 32);
length = tre_local[HIDMA_TRE_LEN_IDX];
seq_printf(s, "src=%pap\n", &src_start);
seq_printf(s, "dest=%pap\n", &dest_start);
seq_printf(s, "length = 0x%x\n", length);
}
static void hidma_ll_devstats(struct seq_file *s, void *llhndl)
{
struct hidma_lldev *lldev = llhndl;
seq_puts(s, "------Device -----\n");
seq_printf(s, "lldev init = 0x%x\n", lldev->initialized);
seq_printf(s, "trch_state = 0x%x\n", lldev->trch_state);
seq_printf(s, "evch_state = 0x%x\n", lldev->evch_state);
seq_printf(s, "chidx = 0x%x\n", lldev->chidx);
seq_printf(s, "nr_tres = 0x%x\n", lldev->nr_tres);
seq_printf(s, "trca=%p\n", lldev->trca);
seq_printf(s, "tre_ring=%p\n", lldev->tre_ring);
seq_printf(s, "tre_ring_handle=%pap\n", &lldev->tre_dma);
seq_printf(s, "tre_ring_size = 0x%x\n", lldev->tre_ring_size);
seq_printf(s, "tre_processed_off = 0x%x\n", lldev->tre_processed_off);
seq_printf(s, "pending_tre_count=%d\n",
atomic_read(&lldev->pending_tre_count));
seq_printf(s, "evca=%p\n", lldev->evca);
seq_printf(s, "evre_ring=%p\n", lldev->evre_ring);
seq_printf(s, "evre_ring_handle=%pap\n", &lldev->evre_dma);
seq_printf(s, "evre_ring_size = 0x%x\n", lldev->evre_ring_size);
seq_printf(s, "evre_processed_off = 0x%x\n", lldev->evre_processed_off);
seq_printf(s, "tre_write_offset = 0x%x\n", lldev->tre_write_offset);
}
/*
* hidma_chan_stats: display HIDMA channel statistics
*
* Display the statistics for the current HIDMA virtual channel device.
*/
static int hidma_chan_stats(struct seq_file *s, void *unused)
{
struct hidma_chan *mchan = s->private;
struct hidma_desc *mdesc;
struct hidma_dev *dmadev = mchan->dmadev;
pm_runtime_get_sync(dmadev->ddev.dev);
seq_printf(s, "paused=%u\n", mchan->paused);
seq_printf(s, "dma_sig=%u\n", mchan->dma_sig);
seq_puts(s, "prepared\n");
list_for_each_entry(mdesc, &mchan->prepared, node)
hidma_ll_chstats(s, mchan->dmadev->lldev, mdesc->tre_ch);
seq_puts(s, "active\n");
list_for_each_entry(mdesc, &mchan->active, node)
hidma_ll_chstats(s, mchan->dmadev->lldev, mdesc->tre_ch);
seq_puts(s, "completed\n");
list_for_each_entry(mdesc, &mchan->completed, node)
hidma_ll_chstats(s, mchan->dmadev->lldev, mdesc->tre_ch);
hidma_ll_devstats(s, mchan->dmadev->lldev);
pm_runtime_mark_last_busy(dmadev->ddev.dev);
pm_runtime_put_autosuspend(dmadev->ddev.dev);
return 0;
}
/*
* hidma_dma_info: display HIDMA device info
*
* Display the info for the current HIDMA device.
*/
static int hidma_dma_info(struct seq_file *s, void *unused)
{
struct hidma_dev *dmadev = s->private;
resource_size_t sz;
seq_printf(s, "nr_descriptors=%d\n", dmadev->nr_descriptors);
seq_printf(s, "dev_trca=%p\n", &dmadev->dev_trca);
seq_printf(s, "dev_trca_phys=%pa\n", &dmadev->trca_resource->start);
sz = resource_size(dmadev->trca_resource);
seq_printf(s, "dev_trca_size=%pa\n", &sz);
seq_printf(s, "dev_evca=%p\n", &dmadev->dev_evca);
seq_printf(s, "dev_evca_phys=%pa\n", &dmadev->evca_resource->start);
sz = resource_size(dmadev->evca_resource);
seq_printf(s, "dev_evca_size=%pa\n", &sz);
return 0;
}
static int hidma_chan_stats_open(struct inode *inode, struct file *file)
{
return single_open(file, hidma_chan_stats, inode->i_private);
}
static int hidma_dma_info_open(struct inode *inode, struct file *file)
{
return single_open(file, hidma_dma_info, inode->i_private);
}
static const struct file_operations hidma_chan_fops = {
.open = hidma_chan_stats_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static const struct file_operations hidma_dma_fops = {
.open = hidma_dma_info_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
void hidma_debug_uninit(struct hidma_dev *dmadev)
{
debugfs_remove_recursive(dmadev->debugfs);
}
int hidma_debug_init(struct hidma_dev *dmadev)
{
int rc = 0;
int chidx = 0;
struct list_head *position = NULL;
dmadev->debugfs = debugfs_create_dir(dev_name(dmadev->ddev.dev), NULL);
if (!dmadev->debugfs) {
rc = -ENODEV;
return rc;
}
/* walk through the virtual channel list */
list_for_each(position, &dmadev->ddev.channels) {
struct hidma_chan *chan;
chan = list_entry(position, struct hidma_chan,
chan.device_node);
sprintf(chan->dbg_name, "chan%d", chidx);
chan->debugfs = debugfs_create_dir(chan->dbg_name,
dmadev->debugfs);
if (!chan->debugfs) {
rc = -ENOMEM;
goto cleanup;
}
chan->stats = debugfs_create_file("stats", S_IRUGO,
chan->debugfs, chan,
&hidma_chan_fops);
if (!chan->stats) {
rc = -ENOMEM;
goto cleanup;
}
chidx++;
}
dmadev->stats = debugfs_create_file("stats", S_IRUGO,
dmadev->debugfs, dmadev,
&hidma_dma_fops);
if (!dmadev->stats) {
rc = -ENOMEM;
goto cleanup;
}
return 0;
cleanup:
hidma_debug_uninit(dmadev);
return rc;
}
|
