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8#include <linux/debugfs.h>
9#include <linux/device.h>
10#include <linux/list.h>
11#include <linux/pm_runtime.h>
12
13#include "hidma.h"
14
15static void hidma_ll_chstats(struct seq_file *s, void *llhndl, u32 tre_ch)
16{
17 struct hidma_lldev *lldev = llhndl;
18 struct hidma_tre *tre;
19 u32 length;
20 dma_addr_t src_start;
21 dma_addr_t dest_start;
22 u32 *tre_local;
23
24 if (tre_ch >= lldev->nr_tres) {
25 dev_err(lldev->dev, "invalid TRE number in chstats:%d", tre_ch);
26 return;
27 }
28 tre = &lldev->trepool[tre_ch];
29 seq_printf(s, "------Channel %d -----\n", tre_ch);
30 seq_printf(s, "allocated=%d\n", atomic_read(&tre->allocated));
31 seq_printf(s, "queued = 0x%x\n", tre->queued);
32 seq_printf(s, "err_info = 0x%x\n", tre->err_info);
33 seq_printf(s, "err_code = 0x%x\n", tre->err_code);
34 seq_printf(s, "status = 0x%x\n", tre->status);
35 seq_printf(s, "idx = 0x%x\n", tre->idx);
36 seq_printf(s, "dma_sig = 0x%x\n", tre->dma_sig);
37 seq_printf(s, "dev_name=%s\n", tre->dev_name);
38 seq_printf(s, "callback=%p\n", tre->callback);
39 seq_printf(s, "data=%p\n", tre->data);
40 seq_printf(s, "tre_index = 0x%x\n", tre->tre_index);
41
42 tre_local = &tre->tre_local[0];
43 src_start = tre_local[HIDMA_TRE_SRC_LOW_IDX];
44 src_start = ((u64) (tre_local[HIDMA_TRE_SRC_HI_IDX]) << 32) + src_start;
45 dest_start = tre_local[HIDMA_TRE_DEST_LOW_IDX];
46 dest_start += ((u64) (tre_local[HIDMA_TRE_DEST_HI_IDX]) << 32);
47 length = tre_local[HIDMA_TRE_LEN_IDX];
48
49 seq_printf(s, "src=%pap\n", &src_start);
50 seq_printf(s, "dest=%pap\n", &dest_start);
51 seq_printf(s, "length = 0x%x\n", length);
52}
53
54static void hidma_ll_devstats(struct seq_file *s, void *llhndl)
55{
56 struct hidma_lldev *lldev = llhndl;
57
58 seq_puts(s, "------Device -----\n");
59 seq_printf(s, "lldev init = 0x%x\n", lldev->initialized);
60 seq_printf(s, "trch_state = 0x%x\n", lldev->trch_state);
61 seq_printf(s, "evch_state = 0x%x\n", lldev->evch_state);
62 seq_printf(s, "chidx = 0x%x\n", lldev->chidx);
63 seq_printf(s, "nr_tres = 0x%x\n", lldev->nr_tres);
64 seq_printf(s, "trca=%p\n", lldev->trca);
65 seq_printf(s, "tre_ring=%p\n", lldev->tre_ring);
66 seq_printf(s, "tre_ring_handle=%pap\n", &lldev->tre_dma);
67 seq_printf(s, "tre_ring_size = 0x%x\n", lldev->tre_ring_size);
68 seq_printf(s, "tre_processed_off = 0x%x\n", lldev->tre_processed_off);
69 seq_printf(s, "pending_tre_count=%d\n",
70 atomic_read(&lldev->pending_tre_count));
71 seq_printf(s, "evca=%p\n", lldev->evca);
72 seq_printf(s, "evre_ring=%p\n", lldev->evre_ring);
73 seq_printf(s, "evre_ring_handle=%pap\n", &lldev->evre_dma);
74 seq_printf(s, "evre_ring_size = 0x%x\n", lldev->evre_ring_size);
75 seq_printf(s, "evre_processed_off = 0x%x\n", lldev->evre_processed_off);
76 seq_printf(s, "tre_write_offset = 0x%x\n", lldev->tre_write_offset);
77}
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84static int hidma_chan_show(struct seq_file *s, void *unused)
85{
86 struct hidma_chan *mchan = s->private;
87 struct hidma_desc *mdesc;
88 struct hidma_dev *dmadev = mchan->dmadev;
89
90 pm_runtime_get_sync(dmadev->ddev.dev);
91 seq_printf(s, "paused=%u\n", mchan->paused);
92 seq_printf(s, "dma_sig=%u\n", mchan->dma_sig);
93 seq_puts(s, "prepared\n");
94 list_for_each_entry(mdesc, &mchan->prepared, node)
95 hidma_ll_chstats(s, mchan->dmadev->lldev, mdesc->tre_ch);
96
97 seq_puts(s, "active\n");
98 list_for_each_entry(mdesc, &mchan->active, node)
99 hidma_ll_chstats(s, mchan->dmadev->lldev, mdesc->tre_ch);
100
101 seq_puts(s, "completed\n");
102 list_for_each_entry(mdesc, &mchan->completed, node)
103 hidma_ll_chstats(s, mchan->dmadev->lldev, mdesc->tre_ch);
104
105 hidma_ll_devstats(s, mchan->dmadev->lldev);
106 pm_runtime_mark_last_busy(dmadev->ddev.dev);
107 pm_runtime_put_autosuspend(dmadev->ddev.dev);
108 return 0;
109}
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115
116static int hidma_dma_show(struct seq_file *s, void *unused)
117{
118 struct hidma_dev *dmadev = s->private;
119 resource_size_t sz;
120
121 seq_printf(s, "nr_descriptors=%d\n", dmadev->nr_descriptors);
122 seq_printf(s, "dev_trca=%p\n", &dmadev->dev_trca);
123 seq_printf(s, "dev_trca_phys=%pa\n", &dmadev->trca_resource->start);
124 sz = resource_size(dmadev->trca_resource);
125 seq_printf(s, "dev_trca_size=%pa\n", &sz);
126 seq_printf(s, "dev_evca=%p\n", &dmadev->dev_evca);
127 seq_printf(s, "dev_evca_phys=%pa\n", &dmadev->evca_resource->start);
128 sz = resource_size(dmadev->evca_resource);
129 seq_printf(s, "dev_evca_size=%pa\n", &sz);
130 return 0;
131}
132
133DEFINE_SHOW_ATTRIBUTE(hidma_chan);
134DEFINE_SHOW_ATTRIBUTE(hidma_dma);
135
136void hidma_debug_uninit(struct hidma_dev *dmadev)
137{
138 debugfs_remove_recursive(dmadev->debugfs);
139}
140
141void hidma_debug_init(struct hidma_dev *dmadev)
142{
143 int chidx = 0;
144 struct list_head *position = NULL;
145 struct dentry *dir;
146
147 dmadev->debugfs = debugfs_create_dir(dev_name(dmadev->ddev.dev), NULL);
148
149
150 list_for_each(position, &dmadev->ddev.channels) {
151 struct hidma_chan *chan;
152
153 chan = list_entry(position, struct hidma_chan,
154 chan.device_node);
155 sprintf(chan->dbg_name, "chan%d", chidx);
156 dir = debugfs_create_dir(chan->dbg_name,
157 dmadev->debugfs);
158 debugfs_create_file("stats", S_IRUGO, dir, chan,
159 &hidma_chan_fops);
160 chidx++;
161 }
162
163 debugfs_create_file("stats", S_IRUGO, dmadev->debugfs, dmadev,
164 &hidma_dma_fops);
165}
166
