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 *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 += 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
  51static 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
  65static 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        char *buf;
  70        ssize_t ret;
  71
  72        buf = kzalloc(MOD_BUF, GFP_KERNEL);
  73        if (!buf)
  74                return -ENOMEM;
  75
  76        ret = snprintf(buf, MOD_BUF, "Module:\n\tUUID %pUL\n\tModule id %d\n"
  77                        "\tInstance id %d\n\tPvt_id %d\n", mconfig->guid,
  78                        mconfig->id.module_id, mconfig->id.instance_id,
  79                        mconfig->id.pvt_id);
  80
  81        ret += snprintf(buf + ret, MOD_BUF - ret,
  82                        "Resources:\n\tMCPS %#x\n\tIBS %#x\n\tOBS %#x\t\n",
  83                        mconfig->mcps, mconfig->ibs, mconfig->obs);
  84
  85        ret += snprintf(buf + ret, MOD_BUF - ret,
  86                        "Module data:\n\tCore %d\n\tIn queue %d\n\t"
  87                        "Out queue %d\n\tType %s\n",
  88                        mconfig->core_id, mconfig->max_in_queue,
  89                        mconfig->max_out_queue,
  90                        mconfig->is_loadable ? "loadable" : "inbuilt");
  91
  92        ret += skl_print_fmt(mconfig->in_fmt, buf, ret, true);
  93        ret += skl_print_fmt(mconfig->out_fmt, buf, ret, false);
  94
  95        ret += snprintf(buf + ret, MOD_BUF - ret,
  96                        "Fixup:\n\tParams %#x\n\tConverter %#x\n",
  97                        mconfig->params_fixup, mconfig->converter);
  98
  99        ret += snprintf(buf + ret, MOD_BUF - ret,
 100                        "Module Gateway:\n\tType %#x\n\tVbus %#x\n\tHW conn %#x\n\tSlot %#x\n",
 101                        mconfig->dev_type, mconfig->vbus_id,
 102                        mconfig->hw_conn_type, mconfig->time_slot);
 103
 104        ret += snprintf(buf + ret, MOD_BUF - ret,
 105                        "Pipeline:\n\tID %d\n\tPriority %d\n\tConn Type %d\n\t"
 106                        "Pages %#x\n", mconfig->pipe->ppl_id,
 107                        mconfig->pipe->pipe_priority, mconfig->pipe->conn_type,
 108                        mconfig->pipe->memory_pages);
 109
 110        ret += snprintf(buf + ret, MOD_BUF - ret,
 111                        "\tParams:\n\t\tHost DMA %d\n\t\tLink DMA %d\n",
 112                        mconfig->pipe->p_params->host_dma_id,
 113                        mconfig->pipe->p_params->link_dma_id);
 114
 115        ret += snprintf(buf + ret, MOD_BUF - ret,
 116                        "\tPCM params:\n\t\tCh %d\n\t\tFreq %d\n\t\tFormat %d\n",
 117                        mconfig->pipe->p_params->ch,
 118                        mconfig->pipe->p_params->s_freq,
 119                        mconfig->pipe->p_params->s_fmt);
 120
 121        ret += snprintf(buf + ret, MOD_BUF - ret,
 122                        "\tLink %#x\n\tStream %#x\n",
 123                        mconfig->pipe->p_params->linktype,
 124                        mconfig->pipe->p_params->stream);
 125
 126        ret += snprintf(buf + ret, MOD_BUF - ret,
 127                        "\tState %d\n\tPassthru %s\n",
 128                        mconfig->pipe->state,
 129                        mconfig->pipe->passthru ? "true" : "false");
 130
 131        ret += skl_print_pins(mconfig->m_in_pin, buf,
 132                        mconfig->max_in_queue, ret, true);
 133        ret += skl_print_pins(mconfig->m_out_pin, buf,
 134                        mconfig->max_out_queue, ret, false);
 135
 136        ret += snprintf(buf + ret, MOD_BUF - ret,
 137                        "Other:\n\tDomain %d\n\tHomogeneous Input %s\n\t"
 138                        "Homogeneous Output %s\n\tIn Queue Mask %d\n\t"
 139                        "Out Queue Mask %d\n\tDMA ID %d\n\tMem Pages %d\n\t"
 140                        "Module Type %d\n\tModule State %d\n",
 141                        mconfig->domain,
 142                        mconfig->homogenous_inputs ? "true" : "false",
 143                        mconfig->homogenous_outputs ? "true" : "false",
 144                        mconfig->in_queue_mask, mconfig->out_queue_mask,
 145                        mconfig->dma_id, mconfig->mem_pages, mconfig->m_state,
 146                        mconfig->m_type);
 147
 148        ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
 149
 150        kfree(buf);
 151        return ret;
 152}
 153
 154static const struct file_operations mcfg_fops = {
 155        .open = simple_open,
 156        .read = module_read,
 157        .llseek = default_llseek,
 158};
 159
 160
 161void skl_debug_init_module(struct skl_debug *d,
 162                        struct snd_soc_dapm_widget *w,
 163                        struct skl_module_cfg *mconfig)
 164{
 165        if (!debugfs_create_file(w->name, 0444,
 166                                d->modules, mconfig,
 167                                &mcfg_fops))
 168                dev_err(d->dev, "%s: module debugfs init failed\n", w->name);
 169}
 170
 171static 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->skl_sst->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                __iowrite32_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
 210static const struct file_operations soft_regs_ctrl_fops = {
 211        .open = simple_open,
 212        .read = fw_softreg_read,
 213        .llseek = default_llseek,
 214};
 215
 216struct skl_debug *skl_debugfs_init(struct skl *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",
 226                                   skl->component->debugfs_root);
 227        if (IS_ERR(d->fs) || !d->fs) {
 228                dev_err(&skl->pci->dev, "debugfs root creation failed\n");
 229                return NULL;
 230        }
 231
 232        d->skl = skl;
 233        d->dev = &skl->pci->dev;
 234
 235        /* now create the module dir */
 236        d->modules = debugfs_create_dir("modules", d->fs);
 237        if (IS_ERR(d->modules) || !d->modules) {
 238                dev_err(&skl->pci->dev, "modules debugfs create failed\n");
 239                goto err;
 240        }
 241
 242        if (!debugfs_create_file("fw_soft_regs_rd", 0444, d->fs, d,
 243                                 &soft_regs_ctrl_fops)) {
 244                dev_err(d->dev, "fw soft regs control debugfs init failed\n");
 245                goto err;
 246        }
 247
 248        return d;
 249
 250err:
 251        debugfs_remove_recursive(d->fs);
 252        return NULL;
 253}
 254