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