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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  skl-debug.c - Debugfs for skl driver
   4  *
   5  *  Copyright (C) 2016-17 Intel Corp
   6  */
   7
   8 #include <linux/pci.h>
   9 #include <linux/debugfs.h>
  10 #include <uapi/sound/skl-tplg-interface.h>
  11 #include "skl.h"
  12 #include "skl-sst-dsp.h"
  13 #include "skl-sst-ipc.h"
  14 #include "skl-topology.h"
  15 #include "../common/sst-dsp.h"
  16 #include "../common/sst-dsp-priv.h"
  17
  18 #define MOD_BUF         PAGE_SIZE
  19 #define FW_REG_BUF      PAGE_SIZE
  20 #define FW_REG_SIZE     0x60
  21
  22 struct skl_debug {
  23         struct skl_dev *skl;
  24         struct device *dev;
  25
  26         struct dentry *fs;
  27         struct dentry *modules;
  28         u8 fw_read_buff[FW_REG_BUF];
  29 };
  30
  31 static ssize_t skl_print_pins(struct skl_module_pin *m_pin, char *buf,
  32                                 int max_pin, ssize_t size, bool direction)
  33 {
  34         int i;
  35         ssize_t ret = 0;
  36
  37         for (i = 0; i < max_pin; i++) {
  38                 ret += scnprintf(buf + size, MOD_BUF - size,
  39                                 "%s %d\n\tModule %d\n\tInstance %d\n\t"
  40                                 "In-used %s\n\tType %s\n"
  41                                 "\tState %d\n\tIndex %d\n",
  42                                 direction ? "Input Pin:" : "Output Pin:",
  43                                 i, m_pin[i].id.module_id,
  44                                 m_pin[i].id.instance_id,
  45                                 m_pin[i].in_use ? "Used" : "Unused",
  46                                 m_pin[i].is_dynamic ? "Dynamic" : "Static",
  47                                 m_pin[i].pin_state, i);
  48                 size += ret;
  49         }
  50         return ret;
  51 }
  52
  53 static ssize_t skl_print_fmt(struct skl_module_fmt *fmt, char *buf,
  54                                         ssize_t size, bool direction)
  55 {
  56         return scnprintf(buf + size, MOD_BUF - size,
  57                         "%s\n\tCh %d\n\tFreq %d\n\tBit depth %d\n\t"
  58                         "Valid bit depth %d\n\tCh config %#x\n\tInterleaving %d\n\t"
  59                         "Sample Type %d\n\tCh Map %#x\n",
  60                         direction ? "Input Format:" : "Output Format:",
  61                         fmt->channels, fmt->s_freq, fmt->bit_depth,
  62                         fmt->valid_bit_depth, fmt->ch_cfg,
  63                         fmt->interleaving_style, fmt->sample_type,
  64                         fmt->ch_map);
  65 }
  66
  67 static ssize_t module_read(struct file *file, char __user *user_buf,
  68                            size_t count, loff_t *ppos)
  69 {
  70         struct skl_module_cfg *mconfig = file->private_data;
  71         struct skl_module *module = mconfig->module;
  72         struct skl_module_res *res = &module->resources[mconfig->res_idx];
  73         char *buf;
  74         ssize_t ret;
  75
  76         buf = kzalloc(MOD_BUF, GFP_KERNEL);
  77         if (!buf)
  78                 return -ENOMEM;
  79
  80         ret = scnprintf(buf, MOD_BUF, "Module:\n\tUUID %pUL\n\tModule id %d\n"
  81                         "\tInstance id %d\n\tPvt_id %d\n", mconfig->guid,
  82                         mconfig->id.module_id, mconfig->id.instance_id,
  83                         mconfig->id.pvt_id);
  84
  85         ret += scnprintf(buf + ret, MOD_BUF - ret,
  86                         "Resources:\n\tCPC %#x\n\tIBS %#x\n\tOBS %#x\t\n",
  87                         res->cpc, res->ibs, res->obs);
  88
  89         ret += scnprintf(buf + ret, MOD_BUF - ret,
  90                         "Module data:\n\tCore %d\n\tIn queue %d\n\t"
  91                         "Out queue %d\n\tType %s\n",
  92                         mconfig->core_id, mconfig->max_in_queue,
  93                         mconfig->max_out_queue,
  94                         mconfig->is_loadable ? "loadable" : "inbuilt");
  95
  96         ret += skl_print_fmt(mconfig->in_fmt, buf, ret, true);
  97         ret += skl_print_fmt(mconfig->out_fmt, buf, ret, false);
  98
  99         ret += scnprintf(buf + ret, MOD_BUF - ret,
 100                         "Fixup:\n\tParams %#x\n\tConverter %#x\n",
 101                         mconfig->params_fixup, mconfig->converter);
 102
 103         ret += scnprintf(buf + ret, MOD_BUF - ret,
 104                         "Module Gateway:\n\tType %#x\n\tVbus %#x\n\tHW conn %#x\n\tSlot %#x\n",
 105                         mconfig->dev_type, mconfig->vbus_id,
 106                         mconfig->hw_conn_type, mconfig->time_slot);
 107
 108         ret += scnprintf(buf + ret, MOD_BUF - ret,
 109                         "Pipeline:\n\tID %d\n\tPriority %d\n\tConn Type %d\n\t"
 110                         "Pages %#x\n", mconfig->pipe->ppl_id,
 111                         mconfig->pipe->pipe_priority, mconfig->pipe->conn_type,
 112                         mconfig->pipe->memory_pages);
 113
 114         ret += scnprintf(buf + ret, MOD_BUF - ret,
 115                         "\tParams:\n\t\tHost DMA %d\n\t\tLink DMA %d\n",
 116                         mconfig->pipe->p_params->host_dma_id,
 117                         mconfig->pipe->p_params->link_dma_id);
 118
 119         ret += scnprintf(buf + ret, MOD_BUF - ret,
 120                         "\tPCM params:\n\t\tCh %d\n\t\tFreq %d\n\t\tFormat %d\n",
 121                         mconfig->pipe->p_params->ch,
 122                         mconfig->pipe->p_params->s_freq,
 123                         mconfig->pipe->p_params->s_fmt);
 124
 125         ret += scnprintf(buf + ret, MOD_BUF - ret,
 126                         "\tLink %#x\n\tStream %#x\n",
 127                         mconfig->pipe->p_params->linktype,
 128                         mconfig->pipe->p_params->stream);
 129
 130         ret += scnprintf(buf + ret, MOD_BUF - ret,
 131                         "\tState %d\n\tPassthru %s\n",
 132                         mconfig->pipe->state,
 133                         mconfig->pipe->passthru ? "true" : "false");
 134
 135         ret += skl_print_pins(mconfig->m_in_pin, buf,
 136                         mconfig->max_in_queue, ret, true);
 137         ret += skl_print_pins(mconfig->m_out_pin, buf,
 138                         mconfig->max_out_queue, ret, false);
 139
 140         ret += scnprintf(buf + ret, MOD_BUF - ret,
 141                         "Other:\n\tDomain %d\n\tHomogeneous Input %s\n\t"
 142                         "Homogeneous Output %s\n\tIn Queue Mask %d\n\t"
 143                         "Out Queue Mask %d\n\tDMA ID %d\n\tMem Pages %d\n\t"
 144                         "Module Type %d\n\tModule State %d\n",
 145                         mconfig->domain,
 146                         mconfig->homogenous_inputs ? "true" : "false",
 147                         mconfig->homogenous_outputs ? "true" : "false",
 148                         mconfig->in_queue_mask, mconfig->out_queue_mask,
 149                         mconfig->dma_id, mconfig->mem_pages, mconfig->m_state,
 150                         mconfig->m_type);
 151
 152         ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
 153
 154         kfree(buf);
 155         return ret;
 156 }
 157
 158 static const struct file_operations mcfg_fops = {
 159         .open = simple_open,
 160         .read = module_read,
 161         .llseek = default_llseek,
 162 };
 163
 164
 165 void skl_debug_init_module(struct skl_debug *d,
 166                         struct snd_soc_dapm_widget *w,
 167                         struct skl_module_cfg *mconfig)
 168 {
 169         debugfs_create_file(w->name, 0444, d->modules, mconfig,
 170                             &mcfg_fops);
 171 }
 172
 173 static ssize_t fw_softreg_read(struct file *file, char __user *user_buf,
 174                                size_t count, loff_t *ppos)
 175 {
 176         struct skl_debug *d = file->private_data;
 177         struct sst_dsp *sst = d->skl->dsp;
 178         size_t w0_stat_sz = sst->addr.w0_stat_sz;
 179         void __iomem *in_base = sst->mailbox.in_base;
 180         void __iomem *fw_reg_addr;
 181         unsigned int offset;
 182         char *tmp;
 183         ssize_t ret = 0;
 184
 185         tmp = kzalloc(FW_REG_BUF, GFP_KERNEL);
 186         if (!tmp)
 187                 return -ENOMEM;
 188
 189         fw_reg_addr = in_base - w0_stat_sz;
 190         memset(d->fw_read_buff, 0, FW_REG_BUF);
 191
 192         if (w0_stat_sz > 0)
 193                 __ioread32_copy(d->fw_read_buff, fw_reg_addr, w0_stat_sz >> 2);
 194
 195         for (offset = 0; offset < FW_REG_SIZE; offset += 16) {
 196                 ret += scnprintf(tmp + ret, FW_REG_BUF - ret, "%#.4x: ", offset);
 197                 hex_dump_to_buffer(d->fw_read_buff + offset, 16, 16, 4,
 198                                    tmp + ret, FW_REG_BUF - ret, 0);
 199                 ret += strlen(tmp + ret);
 200
 201                 /* print newline for each offset */
 202                 if (FW_REG_BUF - ret > 0)
 203                         tmp[ret++] = '\n';
 204         }
 205
 206         ret = simple_read_from_buffer(user_buf, count, ppos, tmp, ret);
 207         kfree(tmp);
 208
 209         return ret;
 210 }
 211
 212 static const struct file_operations soft_regs_ctrl_fops = {
 213         .open = simple_open,
 214         .read = fw_softreg_read,
 215         .llseek = default_llseek,
 216 };
 217
 218 struct skl_debug *skl_debugfs_init(struct skl_dev *skl)
 219 {
 220         struct skl_debug *d;
 221
 222         d = devm_kzalloc(&skl->pci->dev, sizeof(*d), GFP_KERNEL);
 223         if (!d)
 224                 return NULL;
 225
 226         /* create the debugfs dir with platform component's debugfs as parent */
 227         d->fs = debugfs_create_dir("dsp", skl->component->debugfs_root);
 228
 229         d->skl = skl;
 230         d->dev = &skl->pci->dev;
 231
 232         /* now create the module dir */
 233         d->modules = debugfs_create_dir("modules", d->fs);
 234
 235         debugfs_create_file("fw_soft_regs_rd", 0444, d->fs, d,
 236                             &soft_regs_ctrl_fops);
 237
 238         return d;
 239 }
 240
 241 void skl_debugfs_exit(struct skl_dev *skl)
 242 {
 243         struct skl_debug *d = skl->debugfs;
 244
 245         debugfs_remove_recursive(d->fs);
 246
 247         d = NULL;
 248 }