linux/sound/soc/intel/skylake/skl-debug.c
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   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
  22struct 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
  31static 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
  53static 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
  67static 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
 158static const struct file_operations mcfg_fops = {
 159        .open = simple_open,
 160        .read = module_read,
 161        .llseek = default_llseek,
 162};
 163
 164
 165void 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
 173static 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
 212static const struct file_operations soft_regs_ctrl_fops = {
 213        .open = simple_open,
 214        .read = fw_softreg_read,
 215        .llseek = default_llseek,
 216};
 217
 218struct 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
 241void 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}
 249
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