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Linux/sound/soc/intel/skylake/skl-debug.c

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  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 
 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 += snprintf(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         return ret;
 57 }
 58 
 59 static ssize_t skl_print_fmt(struct skl_module_fmt *fmt, char *buf,
 60                                         ssize_t size, bool direction)
 61 {
 62         return snprintf(buf + size, MOD_BUF - size,
 63                         "%s\n\tCh %d\n\tFreq %d\n\tBit depth %d\n\t"
 64                         "Valid bit depth %d\n\tCh config %#x\n\tInterleaving %d\n\t"
 65                         "Sample Type %d\n\tCh Map %#x\n",
 66                         direction ? "Input Format:" : "Output Format:",
 67                         fmt->channels, fmt->s_freq, fmt->bit_depth,
 68                         fmt->valid_bit_depth, fmt->ch_cfg,
 69                         fmt->interleaving_style, fmt->sample_type,
 70                         fmt->ch_map);
 71 }
 72 
 73 static ssize_t module_read(struct file *file, char __user *user_buf,
 74                            size_t count, loff_t *ppos)
 75 {
 76         struct skl_module_cfg *mconfig = file->private_data;
 77         char *buf;
 78         ssize_t ret;
 79 
 80         buf = kzalloc(MOD_BUF, GFP_KERNEL);
 81         if (!buf)
 82                 return -ENOMEM;
 83 
 84         ret = snprintf(buf, MOD_BUF, "Module:\n\tUUID %pUL\n\tModule id %d\n"
 85                         "\tInstance id %d\n\tPvt_id %d\n", mconfig->guid,
 86                         mconfig->id.module_id, mconfig->id.instance_id,
 87                         mconfig->id.pvt_id);
 88 
 89         ret += snprintf(buf + ret, MOD_BUF - ret,
 90                         "Resources:\n\tMCPS %#x\n\tIBS %#x\n\tOBS %#x\t\n",
 91                         mconfig->mcps, mconfig->ibs, mconfig->obs);
 92 
 93         ret += snprintf(buf + ret, MOD_BUF - ret,
 94                         "Module data:\n\tCore %d\n\tIn queue %d\n\t"
 95                         "Out queue %d\n\tType %s\n",
 96                         mconfig->core_id, mconfig->max_in_queue,
 97                         mconfig->max_out_queue,
 98                         mconfig->is_loadable ? "loadable" : "inbuilt");
 99 
100         ret += skl_print_fmt(mconfig->in_fmt, buf, ret, true);
101         ret += skl_print_fmt(mconfig->out_fmt, buf, ret, false);
102 
103         ret += snprintf(buf + ret, MOD_BUF - ret,
104                         "Fixup:\n\tParams %#x\n\tConverter %#x\n",
105                         mconfig->params_fixup, mconfig->converter);
106 
107         ret += snprintf(buf + ret, MOD_BUF - ret,
108                         "Module Gateway:\n\tType %#x\n\tVbus %#x\n\tHW conn %#x\n\tSlot %#x\n",
109                         mconfig->dev_type, mconfig->vbus_id,
110                         mconfig->hw_conn_type, mconfig->time_slot);
111 
112         ret += snprintf(buf + ret, MOD_BUF - ret,
113                         "Pipeline:\n\tID %d\n\tPriority %d\n\tConn Type %d\n\t"
114                         "Pages %#x\n", mconfig->pipe->ppl_id,
115                         mconfig->pipe->pipe_priority, mconfig->pipe->conn_type,
116                         mconfig->pipe->memory_pages);
117 
118         ret += snprintf(buf + ret, MOD_BUF - ret,
119                         "\tParams:\n\t\tHost DMA %d\n\t\tLink DMA %d\n",
120                         mconfig->pipe->p_params->host_dma_id,
121                         mconfig->pipe->p_params->link_dma_id);
122 
123         ret += snprintf(buf + ret, MOD_BUF - ret,
124                         "\tPCM params:\n\t\tCh %d\n\t\tFreq %d\n\t\tFormat %d\n",
125                         mconfig->pipe->p_params->ch,
126                         mconfig->pipe->p_params->s_freq,
127                         mconfig->pipe->p_params->s_fmt);
128 
129         ret += snprintf(buf + ret, MOD_BUF - ret,
130                         "\tLink %#x\n\tStream %#x\n",
131                         mconfig->pipe->p_params->linktype,
132                         mconfig->pipe->p_params->stream);
133 
134         ret += snprintf(buf + ret, MOD_BUF - ret,
135                         "\tState %d\n\tPassthru %s\n",
136                         mconfig->pipe->state,
137                         mconfig->pipe->passthru ? "true" : "false");
138 
139         ret += skl_print_pins(mconfig->m_in_pin, buf,
140                         mconfig->max_in_queue, ret, true);
141         ret += skl_print_pins(mconfig->m_out_pin, buf,
142                         mconfig->max_out_queue, ret, false);
143 
144         ret += snprintf(buf + ret, MOD_BUF - ret,
145                         "Other:\n\tDomain %d\n\tHomogeneous Input %s\n\t"
146                         "Homogeneous Output %s\n\tIn Queue Mask %d\n\t"
147                         "Out Queue Mask %d\n\tDMA ID %d\n\tMem Pages %d\n\t"
148                         "Module Type %d\n\tModule State %d\n",
149                         mconfig->domain,
150                         mconfig->homogenous_inputs ? "true" : "false",
151                         mconfig->homogenous_outputs ? "true" : "false",
152                         mconfig->in_queue_mask, mconfig->out_queue_mask,
153                         mconfig->dma_id, mconfig->mem_pages, mconfig->m_state,
154                         mconfig->m_type);
155 
156         ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
157 
158         kfree(buf);
159         return ret;
160 }
161 
162 static const struct file_operations mcfg_fops = {
163         .open = simple_open,
164         .read = module_read,
165         .llseek = default_llseek,
166 };
167 
168 
169 void skl_debug_init_module(struct skl_debug *d,
170                         struct snd_soc_dapm_widget *w,
171                         struct skl_module_cfg *mconfig)
172 {
173         if (!debugfs_create_file(w->name, 0444,
174                                 d->modules, mconfig,
175                                 &mcfg_fops))
176                 dev_err(d->dev, "%s: module debugfs init failed\n", w->name);
177 }
178 
179 static ssize_t fw_softreg_read(struct file *file, char __user *user_buf,
180                                size_t count, loff_t *ppos)
181 {
182         struct skl_debug *d = file->private_data;
183         struct sst_dsp *sst = d->skl->skl_sst->dsp;
184         size_t w0_stat_sz = sst->addr.w0_stat_sz;
185         void __iomem *in_base = sst->mailbox.in_base;
186         void __iomem *fw_reg_addr;
187         unsigned int offset;
188         char *tmp;
189         ssize_t ret = 0;
190 
191         tmp = kzalloc(FW_REG_BUF, GFP_KERNEL);
192         if (!tmp)
193                 return -ENOMEM;
194 
195         fw_reg_addr = in_base - w0_stat_sz;
196         memset(d->fw_read_buff, 0, FW_REG_BUF);
197 
198         if (w0_stat_sz > 0)
199                 __iowrite32_copy(d->fw_read_buff, fw_reg_addr, w0_stat_sz >> 2);
200 
201         for (offset = 0; offset < FW_REG_SIZE; offset += 16) {
202                 ret += snprintf(tmp + ret, FW_REG_BUF - ret, "%#.4x: ", offset);
203                 hex_dump_to_buffer(d->fw_read_buff + offset, 16, 16, 4,
204                                    tmp + ret, FW_REG_BUF - ret, 0);
205                 ret += strlen(tmp + ret);
206 
207                 /* print newline for each offset */
208                 if (FW_REG_BUF - ret > 0)
209                         tmp[ret++] = '\n';
210         }
211 
212         ret = simple_read_from_buffer(user_buf, count, ppos, tmp, ret);
213         kfree(tmp);
214 
215         return ret;
216 }
217 
218 static const struct file_operations soft_regs_ctrl_fops = {
219         .open = simple_open,
220         .read = fw_softreg_read,
221         .llseek = default_llseek,
222 };
223 
224 struct skl_debug *skl_debugfs_init(struct skl *skl)
225 {
226         struct skl_debug *d;
227 
228         d = devm_kzalloc(&skl->pci->dev, sizeof(*d), GFP_KERNEL);
229         if (!d)
230                 return NULL;
231 
232         /* create the debugfs dir with platform component's debugfs as parent */
233         d->fs = debugfs_create_dir("dsp",
234                                    skl->component->debugfs_root);
235         if (IS_ERR(d->fs) || !d->fs) {
236                 dev_err(&skl->pci->dev, "debugfs root creation failed\n");
237                 return NULL;
238         }
239 
240         d->skl = skl;
241         d->dev = &skl->pci->dev;
242 
243         /* now create the module dir */
244         d->modules = debugfs_create_dir("modules", d->fs);
245         if (IS_ERR(d->modules) || !d->modules) {
246                 dev_err(&skl->pci->dev, "modules debugfs create failed\n");
247                 goto err;
248         }
249 
250         if (!debugfs_create_file("fw_soft_regs_rd", 0444, d->fs, d,
251                                  &soft_regs_ctrl_fops)) {
252                 dev_err(d->dev, "fw soft regs control debugfs init failed\n");
253                 goto err;
254         }
255 
256         return d;
257 
258 err:
259         debugfs_remove_recursive(d->fs);
260         return NULL;
261 }
262 

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