From: Vinod Koul vinod.koul@intel.com

For debug, the kernel debugfs mechanism is available. We can add various debug options for driver like module configuration read, firmware register read etc.

This patch adds debugfs as a child to asoc plaform component and caller is added for skylake driver to do init and cleanup of debugfs.

Signed-off-by: Vinod Koul vinod.koul@intel.com Signed-off-by: Vunny Sodhi vunnyx.sodhi@intel.com Signed-off-by: Guneshwor Singh guneshwor.o.singh@intel.com --- sound/soc/intel/skylake/Makefile | 4 +++ sound/soc/intel/skylake/skl-debug.c | 55 +++++++++++++++++++++++++++++++++++++ sound/soc/intel/skylake/skl-pcm.c | 6 +++- sound/soc/intel/skylake/skl.c | 2 ++ sound/soc/intel/skylake/skl.h | 16 +++++++++++ 5 files changed, 82 insertions(+), 1 deletion(-) create mode 100644 sound/soc/intel/skylake/skl-debug.c

diff --git a/sound/soc/intel/skylake/Makefile b/sound/soc/intel/skylake/Makefile index 60fbc9bbe473..e7d77722d560 100644 --- a/sound/soc/intel/skylake/Makefile +++ b/sound/soc/intel/skylake/Makefile @@ -1,6 +1,10 @@ snd-soc-skl-objs := skl.o skl-pcm.o skl-nhlt.o skl-messages.o \ skl-topology.o

+ifdef CONFIG_DEBUG_FS + snd-soc-skl-objs += skl-debug.o +endif + obj-$(CONFIG_SND_SOC_INTEL_SKYLAKE) += snd-soc-skl.o

# Skylake IPC Support diff --git a/sound/soc/intel/skylake/skl-debug.c b/sound/soc/intel/skylake/skl-debug.c new file mode 100644 index 000000000000..6bc4565773c5 --- /dev/null +++ b/sound/soc/intel/skylake/skl-debug.c @@ -0,0 +1,55 @@ +/* + * skl-debug.c - Debugfs for skl driver + * + * Copyright (C) 2016-17 Intel Corp + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + */ + +#include <linux/pci.h> +#include <linux/debugfs.h> +#include "skl.h" + +struct skl_debug { + struct skl *skl; + struct device *dev; + + struct dentry *fs; +}; + +struct skl_debug *skl_debugfs_init(struct skl *skl) +{ + struct skl_debug *d; + + d = devm_kzalloc(&skl->pci->dev, sizeof(*d), GFP_KERNEL); + if (!d) + return NULL; + + /* create the debugfs dir with platform component's debugfs as parent */ + d->fs = debugfs_create_dir("dsp", + skl->platform->component.debugfs_root); + if (IS_ERR(d->fs) || !d->fs) { + dev_err(&skl->pci->dev, "debugfs root creation failed\n"); + return NULL; + } + + d->skl = skl; + d->dev = &skl->pci->dev; + + return d; +} + +void skl_debugfs_exit(struct skl_debug *d) +{ + debugfs_remove_recursive(d->fs); + + kfree(d); + +} diff --git a/sound/soc/intel/skylake/skl-pcm.c b/sound/soc/intel/skylake/skl-pcm.c index e91bbcffc856..0ebea34a4988 100644 --- a/sound/soc/intel/skylake/skl-pcm.c +++ b/sound/soc/intel/skylake/skl-pcm.c @@ -1249,12 +1249,16 @@ static int skl_platform_soc_probe(struct snd_soc_platform *platform)

pm_runtime_get_sync(platform->dev); if ((ebus_to_hbus(ebus))->ppcap) { + skl->platform = platform; + + /* init debugfs */ + skl->debugfs = skl_debugfs_init(skl); + ret = skl_tplg_init(platform, ebus); if (ret < 0) { dev_err(platform->dev, "Failed to init topology!\n"); return ret; } - skl->platform = platform;

/* load the firmwares, since all is set */ ops = skl_get_dsp_ops(skl->pci->device); diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c index e761550c6dad..410ce83f4a49 100644 --- a/sound/soc/intel/skylake/skl.c +++ b/sound/soc/intel/skylake/skl.c @@ -866,6 +866,8 @@ static void skl_remove(struct pci_dev *pci) /* codec removal, invoke bus_device_remove */ snd_hdac_ext_bus_device_remove(ebus);

+ skl_debugfs_exit(skl->debugfs); + skl->debugfs = NULL; skl_platform_unregister(&pci->dev); skl_free_dsp(skl); skl_machine_device_unregister(skl); diff --git a/sound/soc/intel/skylake/skl.h b/sound/soc/intel/skylake/skl.h index 2a630fcb7f08..a47779c819d5 100644 --- a/sound/soc/intel/skylake/skl.h +++ b/sound/soc/intel/skylake/skl.h @@ -42,6 +42,8 @@ struct skl_dsp_resource { u32 mem; };

+struct skl_debug; + struct skl { struct hdac_ext_bus ebus; struct pci_dev *pci; @@ -66,6 +68,8 @@ struct skl { int supend_active;

struct work_struct probe_work; + + struct skl_debug *debugfs; };

#define skl_to_ebus(s) (&(s)->ebus) @@ -116,4 +120,16 @@ void skl_update_d0i3c(struct device *dev, bool enable); int skl_nhlt_create_sysfs(struct skl *skl); void skl_nhlt_remove_sysfs(struct skl *skl);

+#ifdef CONFIG_DEBUG_FS +struct skl_debug *skl_debugfs_init(struct skl *skl); +void skl_debugfs_exit(struct skl_debug *d); +#else +static inline struct skl_debug *skl_debugfs_init(struct skl *skl) +{ + return NULL; +} +static inline void skl_debugfs_exit(struct skl_debug *d) +{} +#endif + #endif /* __SOUND_SOC_SKL_H */

From: Vinod Koul vinod.koul@intel.com

Driver modules have lot of information represented in struct skl_module_cfg. Knowing this is useful for debug, so enable debugfs for this structure.

Signed-off-by: Vinod Koul vinod.koul@intel.com Signed-off-by: Vunny Sodhi vunnyx.sodhi@intel.com Signed-off-by: Guneshwor Singh guneshwor.o.singh@intel.com --- sound/soc/intel/skylake/skl-debug.c | 156 +++++++++++++++++++++++++++++++++ sound/soc/intel/skylake/skl-topology.c | 3 + sound/soc/intel/skylake/skl.h | 10 +++ 3 files changed, 169 insertions(+)

diff --git a/sound/soc/intel/skylake/skl-debug.c b/sound/soc/intel/skylake/skl-debug.c index 6bc4565773c5..be3238c63200 100644 --- a/sound/soc/intel/skylake/skl-debug.c +++ b/sound/soc/intel/skylake/skl-debug.c @@ -16,14 +16,159 @@ #include <linux/pci.h> #include <linux/debugfs.h> #include "skl.h" +#include "skl-tplg-interface.h" +#include "skl-topology.h" + +#define MOD_BUF PAGE_SIZE

struct skl_debug { struct skl *skl; struct device *dev;

struct dentry *fs; + struct dentry *modules; };

+static ssize_t skl_print_pins(struct skl_module_pin *m_pin, char *buf, + int max_pin, ssize_t size, bool direction) +{ + int i; + ssize_t ret = 0; + + for (i = 0; i < max_pin; i++) + ret += snprintf(buf + size, MOD_BUF - size, + "%s %d\n\tModule %d\n\tInstance %d\n\t" + "In-used %s\n\tType %s\n" + "\tState %d\n\tIndex %d\n", + direction ? "Input Pin:" : "Output Pin:", + i, m_pin[i].id.module_id, + m_pin[i].id.instance_id, + m_pin[i].in_use ? "Used" : "Unused", + m_pin[i].is_dynamic ? "Dynamic" : "Static", + m_pin[i].pin_state, i); + return ret; +} + +static ssize_t skl_print_fmt(struct skl_module_fmt *fmt, char *buf, + ssize_t size, bool direction) +{ + return snprintf(buf + size, MOD_BUF - size, + "%s\n\tCh %d\n\tFreq %d\n\tBit depth %d\n\t" + "Valid bit depth %d\n\tCh config %#x\n\tInterleaving %d\n\t" + "Sample Type %d\n\tCh Map %#x\n", + direction ? "Input Format:" : "Output Format:", + fmt->channels, fmt->s_freq, fmt->bit_depth, + fmt->valid_bit_depth, fmt->ch_cfg, + fmt->interleaving_style, fmt->sample_type, + fmt->ch_map); +} + +static ssize_t module_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct skl_module_cfg *mconfig = file->private_data; + char *buf; + ssize_t ret; + + buf = kzalloc(MOD_BUF, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + ret = snprintf(buf, MOD_BUF, "Module:\n\tUUID %pUL\n\tModule id %d\n" + "\tInstance id %d\n\tPvt_id %d\n", mconfig->guid, + mconfig->id.module_id, mconfig->id.instance_id, + mconfig->id.pvt_id); + + ret += snprintf(buf + ret, MOD_BUF - ret, + "Resources:\n\tMCPS %#x\n\tIBS %#x\n\tOBS %#x\t\n", + mconfig->mcps, mconfig->ibs, mconfig->obs); + + ret += snprintf(buf + ret, MOD_BUF - ret, + "Module data:\n\tCore %d\n\tIn queue %d\n\t" + "Out queue %d\n\tType %s\n", + mconfig->core_id, mconfig->max_in_queue, + mconfig->max_out_queue, + mconfig->is_loadable ? "loadable" : "inbuilt"); + + ret += skl_print_fmt(mconfig->in_fmt, buf, ret, true); + ret += skl_print_fmt(mconfig->out_fmt, buf, ret, false); + + ret += snprintf(buf + ret, MOD_BUF - ret, + "Fixup:\n\tParams %#x\n\tConverter %#x\n", + mconfig->params_fixup, mconfig->converter); + + ret += snprintf(buf + ret, MOD_BUF - ret, + "Module Gateway:\n\tType %#x\n\tVbus %#x\n\tHW conn %#x\n\tSlot %#x\n", + mconfig->dev_type, mconfig->vbus_id, + mconfig->hw_conn_type, mconfig->time_slot); + + ret += snprintf(buf + ret, MOD_BUF - ret, + "Pipeline:\n\tID %d\n\tPriority %d\n\tConn Type %d\n\t" + "Pages %#x\n", mconfig->pipe->ppl_id, + mconfig->pipe->pipe_priority, mconfig->pipe->conn_type, + mconfig->pipe->memory_pages); + + ret += snprintf(buf + ret, MOD_BUF - ret, + "\tParams:\n\t\tHost DMA %d\n\t\tLink DMA %d\n", + mconfig->pipe->p_params->host_dma_id, + mconfig->pipe->p_params->link_dma_id); + + ret += snprintf(buf + ret, MOD_BUF - ret, + "\tPCM params:\n\t\tCh %d\n\t\tFreq %d\n\t\tFormat %d\n", + mconfig->pipe->p_params->ch, + mconfig->pipe->p_params->s_freq, + mconfig->pipe->p_params->s_fmt); + + ret += snprintf(buf + ret, MOD_BUF - ret, + "\tLink %#x\n\tStream %#x\n", + mconfig->pipe->p_params->linktype, + mconfig->pipe->p_params->stream); + + ret += snprintf(buf + ret, MOD_BUF - ret, + "\tState %d\n\tPassthru %s\n", + mconfig->pipe->state, + mconfig->pipe->passthru ? "true" : "false"); + + ret += skl_print_pins(mconfig->m_in_pin, buf, + mconfig->max_in_queue, ret, true); + ret += skl_print_pins(mconfig->m_out_pin, buf, + mconfig->max_out_queue, ret, false); + + ret += snprintf(buf + ret, MOD_BUF - ret, + "Other:\n\tDomain %d\n\tHomogenous Input %s\n\t" + "Homogenous Output %s\n\tIn Queue Mask %d\n\t" + "Out Queue Mask %d\n\tDMA ID %d\n\tMem Pages %d\n\t" + "Module Type %d\n\tModule State %d\n", + mconfig->domain, + mconfig->homogenous_inputs ? "true" : "false", + mconfig->homogenous_outputs ? "true" : "false", + mconfig->in_queue_mask, mconfig->out_queue_mask, + mconfig->dma_id, mconfig->mem_pages, mconfig->m_state, + mconfig->m_type); + + ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); + + kfree(buf); + return ret; +} + +static const struct file_operations mcfg_fops = { + .open = simple_open, + .read = module_read, + .llseek = default_llseek, +}; + + +void skl_debug_init_module(struct skl_debug *d, + struct snd_soc_dapm_widget *w, + struct skl_module_cfg *mconfig) +{ + if (!debugfs_create_file(w->name, 0444, + d->modules, mconfig, + &mcfg_fops)) + dev_err(d->dev, "%s: module debugfs init failed\n", w->name); +} + struct skl_debug *skl_debugfs_init(struct skl *skl) { struct skl_debug *d; @@ -43,7 +188,18 @@ struct skl_debug *skl_debugfs_init(struct skl *skl) d->skl = skl; d->dev = &skl->pci->dev;

+ /* now create the module dir */ + d->modules = debugfs_create_dir("modules", d->fs); + if (IS_ERR(d->modules) || !d->modules) { + dev_err(&skl->pci->dev, "modules debugfs create failed\n"); + goto err; + } + return d; + +err: + debugfs_remove_recursive(d->fs); + return NULL; }

void skl_debugfs_exit(struct skl_debug *d) diff --git a/sound/soc/intel/skylake/skl-topology.c b/sound/soc/intel/skylake/skl-topology.c index 9569f118e97e..c02da16fdfd6 100644 --- a/sound/soc/intel/skylake/skl-topology.c +++ b/sound/soc/intel/skylake/skl-topology.c @@ -2472,6 +2472,9 @@ static int skl_tplg_widget_load(struct snd_soc_component *cmpnt, ret = skl_tplg_get_pvt_data(tplg_w, skl, bus->dev, mconfig); if (ret < 0) return ret; + + skl_debug_init_module(skl->debugfs, w, mconfig); + bind_event: if (tplg_w->event_type == 0) { dev_dbg(bus->dev, "ASoC: No event handler required\n"); diff --git a/sound/soc/intel/skylake/skl.h b/sound/soc/intel/skylake/skl.h index a47779c819d5..14e7778d7f80 100644 --- a/sound/soc/intel/skylake/skl.h +++ b/sound/soc/intel/skylake/skl.h @@ -23,6 +23,7 @@

#include <sound/hda_register.h> #include <sound/hdaudio_ext.h> +#include <sound/soc.h> #include "skl-nhlt.h"

#define SKL_SUSPEND_DELAY 2000 @@ -120,9 +121,14 @@ void skl_update_d0i3c(struct device *dev, bool enable); int skl_nhlt_create_sysfs(struct skl *skl); void skl_nhlt_remove_sysfs(struct skl *skl);

+struct skl_module_cfg; + #ifdef CONFIG_DEBUG_FS struct skl_debug *skl_debugfs_init(struct skl *skl); void skl_debugfs_exit(struct skl_debug *d); +void skl_debug_init_module(struct skl_debug *d, + struct snd_soc_dapm_widget *w, + struct skl_module_cfg *mconfig); #else static inline struct skl_debug *skl_debugfs_init(struct skl *skl) { @@ -130,6 +136,10 @@ static inline struct skl_debug *skl_debugfs_init(struct skl *skl) } static inline void skl_debugfs_exit(struct skl_debug *d) {} +static inline void skl_debug_init_module(struct skl_debug *d, + struct snd_soc_dapm_widget *w, + struct skl_module_cfg *mconfig) +{} #endif

#endif /* __SOUND_SOC_SKL_H */

From: Vunny Sodhi vunnyx.sodhi@intel.com

This patch adds debugfs support to read fw registers, mailbox offsets and sram address.

Signed-off-by: Mousumi Jana mousumix.jana@intel.com Signed-off-by: Ramesh Babu ramesh.babu@intel.com Signed-off-by: Jayachandran B jayachandran.b@intel.com Signed-off-by: Pardha Saradhi K pardha.saradhi.kesapragada@intel.com Signed-off-by: Vunny Sodhi vunnyx.sodhi@intel.com Signed-off-by: Guneshwor Singh guneshwor.o.singh@intel.com --- sound/soc/intel/skylake/skl-debug.c | 57 +++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+)

diff --git a/sound/soc/intel/skylake/skl-debug.c b/sound/soc/intel/skylake/skl-debug.c index be3238c63200..75497b1fda45 100644 --- a/sound/soc/intel/skylake/skl-debug.c +++ b/sound/soc/intel/skylake/skl-debug.c @@ -16,10 +16,15 @@ #include <linux/pci.h> #include <linux/debugfs.h> #include "skl.h" +#include "skl-sst-dsp.h" +#include "skl-sst-ipc.h" #include "skl-tplg-interface.h" #include "skl-topology.h" +#include "../common/sst-dsp-priv.h"

#define MOD_BUF PAGE_SIZE +#define FW_REG_BUF PAGE_SIZE +#define FW_REG_SIZE 0x60

struct skl_debug { struct skl *skl; @@ -27,6 +32,7 @@ struct skl_debug {

struct dentry *fs; struct dentry *modules; + u8 fw_read_buff[FW_REG_BUF]; };

static ssize_t skl_print_pins(struct skl_module_pin *m_pin, char *buf, @@ -169,6 +175,51 @@ void skl_debug_init_module(struct skl_debug *d, dev_err(d->dev, "%s: module debugfs init failed\n", w->name); }

+static ssize_t fw_softreg_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct skl_debug *d = file->private_data; + struct sst_dsp *sst = d->skl->skl_sst->dsp; + size_t w0_stat_sz = sst->addr.w0_stat_sz; + void __iomem *in_base = sst->mailbox.in_base; + void __iomem *fw_reg_addr; + unsigned int offset; + char *tmp; + ssize_t ret = 0; + + tmp = kzalloc(FW_REG_BUF, GFP_KERNEL); + if (!tmp) + return -ENOMEM; + + fw_reg_addr = in_base - w0_stat_sz; + memset(d->fw_read_buff, 0, FW_REG_BUF); + + if (w0_stat_sz > 0) + __iowrite32_copy(d->fw_read_buff, fw_reg_addr, w0_stat_sz >> 2); + + for (offset = 0; offset < FW_REG_SIZE; offset += 16) { + ret += snprintf(tmp + ret, FW_REG_BUF - ret, "%#.4x: ", offset); + hex_dump_to_buffer(d->fw_read_buff + offset, 16, 16, 4, + tmp + ret, FW_REG_BUF - ret, 0); + ret += strlen(tmp + ret); + + /* print newline for each offset */ + if (FW_REG_BUF - ret > 0) + tmp[ret++] = '\n'; + } + + ret = simple_read_from_buffer(user_buf, count, ppos, tmp, ret); + kfree(tmp); + + return ret; +} + +static const struct file_operations soft_regs_ctrl_fops = { + .open = simple_open, + .read = fw_softreg_read, + .llseek = default_llseek, +}; + struct skl_debug *skl_debugfs_init(struct skl *skl) { struct skl_debug *d; @@ -195,6 +246,12 @@ struct skl_debug *skl_debugfs_init(struct skl *skl) goto err; }

+ if (!debugfs_create_file("fw_soft_regs_rd", 0444, d->fs, d, + &soft_regs_ctrl_fops)) { + dev_err(d->dev, "fw soft regs control debugfs init failed\n"); + goto err; + } + return d;

err: