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

   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 "skl.h"
  19 #include "skl-sst-dsp.h"
  20 #include "skl-sst-ipc.h"
  21 #include "skl-tplg-interface.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\tHomogenous Input %s\n\t"
 146                         "Homogenous 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->platform->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 }