1 files changed, 263 insertions, 0 deletions
diff --git a/sound/soc/intel/skylake/skl-debug.c b/sound/soc/intel/skylake/skl-debug.c
new file mode 100644
index 000000000..a0714c0e6
--- /dev/null
+++ b/sound/soc/intel/skylake/skl-debug.c
@@ -0,0 +1,263 @@
+/*
+ *  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 <uapi/sound/skl-tplg-interface.h>
+#include "skl.h"
+#include "skl-sst-dsp.h"
+#include "skl-sst-ipc.h"
+#include "skl-topology.h"
+#include "../common/sst-dsp.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;
+	struct device *dev;
+
+	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,
+				int max_pin, ssize_t size, bool direction)
+{
+	int i;
+	ssize_t ret = 0;
+
+	for (i = 0; i < max_pin; i++) {
+		ret += scnprintf(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);
+		size += ret;
+	}
+	return ret;
+}
+
+static ssize_t skl_print_fmt(struct skl_module_fmt *fmt, char *buf,
+					ssize_t size, bool direction)
+{
+	return scnprintf(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 = scnprintf(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 += scnprintf(buf + ret, MOD_BUF - ret,
+			"Resources:\n\tMCPS %#x\n\tIBS %#x\n\tOBS %#x\t\n",
+			mconfig->mcps, mconfig->ibs, mconfig->obs);
+
+	ret += scnprintf(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 += scnprintf(buf + ret, MOD_BUF - ret,
+			"Fixup:\n\tParams %#x\n\tConverter %#x\n",
+			mconfig->params_fixup, mconfig->converter);
+
+	ret += scnprintf(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 += scnprintf(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 += scnprintf(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 += scnprintf(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 += scnprintf(buf + ret, MOD_BUF - ret,
+			"\tLink %#x\n\tStream %#x\n",
+			mconfig->pipe->p_params->linktype,
+			mconfig->pipe->p_params->stream);
+
+	ret += scnprintf(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 += scnprintf(buf + ret, MOD_BUF - ret,
+			"Other:\n\tDomain %d\n\tHomogeneous Input %s\n\t"
+			"Homogeneous 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);
+}
+
+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)
+		__ioread32_copy(d->fw_read_buff, fw_reg_addr, w0_stat_sz >> 2);
+
+	for (offset = 0; offset < FW_REG_SIZE; offset += 16) {
+		ret += scnprintf(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;
+
+	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->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;
+
+	/* 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;
+	}
+
+	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:
+	debugfs_remove_recursive(d->fs);
+	return NULL;
+}