1 /*
2 * skl-debug.c - Debugfs for skl driver
3 *
4 * Copyright (C) 2016-17 Intel Corp
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 */
15
16 #include <linux/pci.h>
17 #include <linux/debugfs.h>
18 #include <uapi/sound/skl-tplg-interface.h>
19 #include "skl.h"
20 #include "skl-sst-dsp.h"
21 #include "skl-sst-ipc.h"
22 #include "skl-topology.h"
23 #include "../common/sst-dsp.h"
24 #include "../common/sst-dsp-priv.h"
25
26 #define MOD_BUF PAGE_SIZE
27 #define FW_REG_BUF PAGE_SIZE
28 #define FW_REG_SIZE 0x60
29
30 struct skl_debug {
31 struct skl *skl;
32 struct device *dev;
33
34 struct dentry *fs;
35 struct dentry *modules;
36 u8 fw_read_buff[FW_REG_BUF];
37 };
38
skl_print_pins(struct skl_module_pin * m_pin,char * buf,int max_pin,ssize_t size,bool direction)39 static ssize_t skl_print_pins(struct skl_module_pin *m_pin, char *buf,
40 int max_pin, ssize_t size, bool direction)
41 {
42 int i;
43 ssize_t ret = 0;
44
45 for (i = 0; i < max_pin; i++) {
46 ret += scnprintf(buf + size, MOD_BUF - size,
47 "%s %d\n\tModule %d\n\tInstance %d\n\t"
48 "In-used %s\n\tType %s\n"
49 "\tState %d\n\tIndex %d\n",
50 direction ? "Input Pin:" : "Output Pin:",
51 i, m_pin[i].id.module_id,
52 m_pin[i].id.instance_id,
53 m_pin[i].in_use ? "Used" : "Unused",
54 m_pin[i].is_dynamic ? "Dynamic" : "Static",
55 m_pin[i].pin_state, i);
56 size += ret;
57 }
58 return ret;
59 }
60
skl_print_fmt(struct skl_module_fmt * fmt,char * buf,ssize_t size,bool direction)61 static ssize_t skl_print_fmt(struct skl_module_fmt *fmt, char *buf,
62 ssize_t size, bool direction)
63 {
64 return scnprintf(buf + size, MOD_BUF - size,
65 "%s\n\tCh %d\n\tFreq %d\n\tBit depth %d\n\t"
66 "Valid bit depth %d\n\tCh config %#x\n\tInterleaving %d\n\t"
67 "Sample Type %d\n\tCh Map %#x\n",
68 direction ? "Input Format:" : "Output Format:",
69 fmt->channels, fmt->s_freq, fmt->bit_depth,
70 fmt->valid_bit_depth, fmt->ch_cfg,
71 fmt->interleaving_style, fmt->sample_type,
72 fmt->ch_map);
73 }
74
module_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)75 static ssize_t module_read(struct file *file, char __user *user_buf,
76 size_t count, loff_t *ppos)
77 {
78 struct skl_module_cfg *mconfig = file->private_data;
79 char *buf;
80 ssize_t ret;
81
82 buf = kzalloc(MOD_BUF, GFP_KERNEL);
83 if (!buf)
84 return -ENOMEM;
85
86 ret = scnprintf(buf, MOD_BUF, "Module:\n\tUUID %pUL\n\tModule id %d\n"
87 "\tInstance id %d\n\tPvt_id %d\n", mconfig->guid,
88 mconfig->id.module_id, mconfig->id.instance_id,
89 mconfig->id.pvt_id);
90
91 ret += scnprintf(buf + ret, MOD_BUF - ret,
92 "Resources:\n\tMCPS %#x\n\tIBS %#x\n\tOBS %#x\t\n",
93 mconfig->mcps, mconfig->ibs, mconfig->obs);
94
95 ret += scnprintf(buf + ret, MOD_BUF - ret,
96 "Module data:\n\tCore %d\n\tIn queue %d\n\t"
97 "Out queue %d\n\tType %s\n",
98 mconfig->core_id, mconfig->max_in_queue,
99 mconfig->max_out_queue,
100 mconfig->is_loadable ? "loadable" : "inbuilt");
101
102 ret += skl_print_fmt(mconfig->in_fmt, buf, ret, true);
103 ret += skl_print_fmt(mconfig->out_fmt, buf, ret, false);
104
105 ret += scnprintf(buf + ret, MOD_BUF - ret,
106 "Fixup:\n\tParams %#x\n\tConverter %#x\n",
107 mconfig->params_fixup, mconfig->converter);
108
109 ret += scnprintf(buf + ret, MOD_BUF - ret,
110 "Module Gateway:\n\tType %#x\n\tVbus %#x\n\tHW conn %#x\n\tSlot %#x\n",
111 mconfig->dev_type, mconfig->vbus_id,
112 mconfig->hw_conn_type, mconfig->time_slot);
113
114 ret += scnprintf(buf + ret, MOD_BUF - ret,
115 "Pipeline:\n\tID %d\n\tPriority %d\n\tConn Type %d\n\t"
116 "Pages %#x\n", mconfig->pipe->ppl_id,
117 mconfig->pipe->pipe_priority, mconfig->pipe->conn_type,
118 mconfig->pipe->memory_pages);
119
120 ret += scnprintf(buf + ret, MOD_BUF - ret,
121 "\tParams:\n\t\tHost DMA %d\n\t\tLink DMA %d\n",
122 mconfig->pipe->p_params->host_dma_id,
123 mconfig->pipe->p_params->link_dma_id);
124
125 ret += scnprintf(buf + ret, MOD_BUF - ret,
126 "\tPCM params:\n\t\tCh %d\n\t\tFreq %d\n\t\tFormat %d\n",
127 mconfig->pipe->p_params->ch,
128 mconfig->pipe->p_params->s_freq,
129 mconfig->pipe->p_params->s_fmt);
130
131 ret += scnprintf(buf + ret, MOD_BUF - ret,
132 "\tLink %#x\n\tStream %#x\n",
133 mconfig->pipe->p_params->linktype,
134 mconfig->pipe->p_params->stream);
135
136 ret += scnprintf(buf + ret, MOD_BUF - ret,
137 "\tState %d\n\tPassthru %s\n",
138 mconfig->pipe->state,
139 mconfig->pipe->passthru ? "true" : "false");
140
141 ret += skl_print_pins(mconfig->m_in_pin, buf,
142 mconfig->max_in_queue, ret, true);
143 ret += skl_print_pins(mconfig->m_out_pin, buf,
144 mconfig->max_out_queue, ret, false);
145
146 ret += scnprintf(buf + ret, MOD_BUF - ret,
147 "Other:\n\tDomain %d\n\tHomogeneous Input %s\n\t"
148 "Homogeneous Output %s\n\tIn Queue Mask %d\n\t"
149 "Out Queue Mask %d\n\tDMA ID %d\n\tMem Pages %d\n\t"
150 "Module Type %d\n\tModule State %d\n",
151 mconfig->domain,
152 mconfig->homogenous_inputs ? "true" : "false",
153 mconfig->homogenous_outputs ? "true" : "false",
154 mconfig->in_queue_mask, mconfig->out_queue_mask,
155 mconfig->dma_id, mconfig->mem_pages, mconfig->m_state,
156 mconfig->m_type);
157
158 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
159
160 kfree(buf);
161 return ret;
162 }
163
164 static const struct file_operations mcfg_fops = {
165 .open = simple_open,
166 .read = module_read,
167 .llseek = default_llseek,
168 };
169
170
skl_debug_init_module(struct skl_debug * d,struct snd_soc_dapm_widget * w,struct skl_module_cfg * mconfig)171 void skl_debug_init_module(struct skl_debug *d,
172 struct snd_soc_dapm_widget *w,
173 struct skl_module_cfg *mconfig)
174 {
175 if (!debugfs_create_file(w->name, 0444,
176 d->modules, mconfig,
177 &mcfg_fops))
178 dev_err(d->dev, "%s: module debugfs init failed\n", w->name);
179 }
180
fw_softreg_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)181 static ssize_t fw_softreg_read(struct file *file, char __user *user_buf,
182 size_t count, loff_t *ppos)
183 {
184 struct skl_debug *d = file->private_data;
185 struct sst_dsp *sst = d->skl->skl_sst->dsp;
186 size_t w0_stat_sz = sst->addr.w0_stat_sz;
187 void __iomem *in_base = sst->mailbox.in_base;
188 void __iomem *fw_reg_addr;
189 unsigned int offset;
190 char *tmp;
191 ssize_t ret = 0;
192
193 tmp = kzalloc(FW_REG_BUF, GFP_KERNEL);
194 if (!tmp)
195 return -ENOMEM;
196
197 fw_reg_addr = in_base - w0_stat_sz;
198 memset(d->fw_read_buff, 0, FW_REG_BUF);
199
200 if (w0_stat_sz > 0)
201 __ioread32_copy(d->fw_read_buff, fw_reg_addr, w0_stat_sz >> 2);
202
203 for (offset = 0; offset < FW_REG_SIZE; offset += 16) {
204 ret += scnprintf(tmp + ret, FW_REG_BUF - ret, "%#.4x: ", offset);
205 hex_dump_to_buffer(d->fw_read_buff + offset, 16, 16, 4,
206 tmp + ret, FW_REG_BUF - ret, 0);
207 ret += strlen(tmp + ret);
208
209 /* print newline for each offset */
210 if (FW_REG_BUF - ret > 0)
211 tmp[ret++] = '\n';
212 }
213
214 ret = simple_read_from_buffer(user_buf, count, ppos, tmp, ret);
215 kfree(tmp);
216
217 return ret;
218 }
219
220 static const struct file_operations soft_regs_ctrl_fops = {
221 .open = simple_open,
222 .read = fw_softreg_read,
223 .llseek = default_llseek,
224 };
225
skl_debugfs_init(struct skl * skl)226 struct skl_debug *skl_debugfs_init(struct skl *skl)
227 {
228 struct skl_debug *d;
229
230 d = devm_kzalloc(&skl->pci->dev, sizeof(*d), GFP_KERNEL);
231 if (!d)
232 return NULL;
233
234 /* create the debugfs dir with platform component's debugfs as parent */
235 d->fs = debugfs_create_dir("dsp",
236 skl->component->debugfs_root);
237 if (IS_ERR(d->fs) || !d->fs) {
238 dev_err(&skl->pci->dev, "debugfs root creation failed\n");
239 return NULL;
240 }
241
242 d->skl = skl;
243 d->dev = &skl->pci->dev;
244
245 /* now create the module dir */
246 d->modules = debugfs_create_dir("modules", d->fs);
247 if (IS_ERR(d->modules) || !d->modules) {
248 dev_err(&skl->pci->dev, "modules debugfs create failed\n");
249 goto err;
250 }
251
252 if (!debugfs_create_file("fw_soft_regs_rd", 0444, d->fs, d,
253 &soft_regs_ctrl_fops)) {
254 dev_err(d->dev, "fw soft regs control debugfs init failed\n");
255 goto err;
256 }
257
258 return d;
259
260 err:
261 debugfs_remove_recursive(d->fs);
262 return NULL;
263 }
264