[mirror_ubuntu-jammy-kernel.git] / drivers / remoteproc / remoteproc_debugfs.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Remote Processor Framework
 *
 * Copyright (C) 2011 Texas Instruments, Inc.
 * Copyright (C) 2011 Google, Inc.
 *
 * Ohad Ben-Cohen <ohad@wizery.com>
 * Mark Grosen <mgrosen@ti.com>
 * Brian Swetland <swetland@google.com>
 * Fernando Guzman Lugo <fernando.lugo@ti.com>
 * Suman Anna <s-anna@ti.com>
 * Robert Tivy <rtivy@ti.com>
 * Armando Uribe De Leon <x0095078@ti.com>
 */

#define pr_fmt(fmt)    "%s: " fmt, __func__

#include <linux/kernel.h>
#include <linux/debugfs.h>
#include <linux/remoteproc.h>
#include <linux/device.h>
#include <linux/uaccess.h>

#include "remoteproc_internal.h"

/* remoteproc debugfs parent dir */
static struct dentry *rproc_dbg;

/*
 * Some remote processors may support dumping trace logs into a shared
 * memory buffer. We expose this trace buffer using debugfs, so users
 * can easily tell what's going on remotely.
 *
 * We will most probably improve the rproc tracing facilities later on,
 * but this kind of lightweight and simple mechanism is always good to have,
 * as it provides very early tracing with little to no dependencies at all.
 */
static ssize_t rproc_trace_read(struct file *filp, char __user *userbuf,
				size_t count, loff_t *ppos)
{
	struct rproc_debug_trace *data = filp->private_data;
	struct rproc_mem_entry *trace = &data->trace_mem;
	void *va;
	char buf[100];
	int len;

	va = rproc_da_to_va(data->rproc, trace->da, trace->len);

	if (!va) {
		len = scnprintf(buf, sizeof(buf), "Trace %s not available\n",
				trace->name);
		va = buf;
	} else {
		len = strnlen(va, trace->len);
	}

	return simple_read_from_buffer(userbuf, count, ppos, va, len);
}

static const struct file_operations trace_rproc_ops = {
	.read = rproc_trace_read,
	.open = simple_open,
	.llseek	= generic_file_llseek,
};

/* expose the name of the remote processor via debugfs */
static ssize_t rproc_name_read(struct file *filp, char __user *userbuf,
			       size_t count, loff_t *ppos)
{
	struct rproc *rproc = filp->private_data;
	/* need room for the name, a newline and a terminating null */
	char buf[100];
	int i;

	i = scnprintf(buf, sizeof(buf), "%.98s\n", rproc->name);

	return simple_read_from_buffer(userbuf, count, ppos, buf, i);
}

static const struct file_operations rproc_name_ops = {
	.read = rproc_name_read,
	.open = simple_open,
	.llseek	= generic_file_llseek,
};

/* expose recovery flag via debugfs */
static ssize_t rproc_recovery_read(struct file *filp, char __user *userbuf,
				   size_t count, loff_t *ppos)
{
	struct rproc *rproc = filp->private_data;
	char *buf = rproc->recovery_disabled ? "disabled\n" : "enabled\n";

	return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
}

/*
 * By writing to the 'recovery' debugfs entry, we control the behavior of the
 * recovery mechanism dynamically. The default value of this entry is "enabled".
 *
 * The 'recovery' debugfs entry supports these commands:
 *
 * enabled:	When enabled, the remote processor will be automatically
 *		recovered whenever it crashes. Moreover, if the remote
 *		processor crashes while recovery is disabled, it will
 *		be automatically recovered too as soon as recovery is enabled.
 *
 * disabled:	When disabled, a remote processor will remain in a crashed
 *		state if it crashes. This is useful for debugging purposes;
 *		without it, debugging a crash is substantially harder.
 *
 * recover:	This function will trigger an immediate recovery if the
 *		remote processor is in a crashed state, without changing
 *		or checking the recovery state (enabled/disabled).
 *		This is useful during debugging sessions, when one expects
 *		additional crashes to happen after enabling recovery. In this
 *		case, enabling recovery will make it hard to debug subsequent
 *		crashes, so it's recommended to keep recovery disabled, and
 *		instead use the "recover" command as needed.
 */
static ssize_t
rproc_recovery_write(struct file *filp, const char __user *user_buf,
		     size_t count, loff_t *ppos)
{
	struct rproc *rproc = filp->private_data;
	char buf[10];
	int ret;

	if (count < 1 || count > sizeof(buf))
		return -EINVAL;

	ret = copy_from_user(buf, user_buf, count);
	if (ret)
		return -EFAULT;

	/* remove end of line */
	if (buf[count - 1] == '\n')
		buf[count - 1] = '\0';

	if (!strncmp(buf, "enabled", count)) {
		/* change the flag and begin the recovery process if needed */
		rproc->recovery_disabled = false;
		rproc_trigger_recovery(rproc);
	} else if (!strncmp(buf, "disabled", count)) {
		rproc->recovery_disabled = true;
	} else if (!strncmp(buf, "recover", count)) {
		/* begin the recovery process without changing the flag */
		rproc_trigger_recovery(rproc);
	} else {
		return -EINVAL;
	}

	return count;
}

static const struct file_operations rproc_recovery_ops = {
	.read = rproc_recovery_read,
	.write = rproc_recovery_write,
	.open = simple_open,
	.llseek = generic_file_llseek,
};

/* expose the crash trigger via debugfs */
static ssize_t
rproc_crash_write(struct file *filp, const char __user *user_buf,
		  size_t count, loff_t *ppos)
{
	struct rproc *rproc = filp->private_data;
	unsigned int type;
	int ret;

	ret = kstrtouint_from_user(user_buf, count, 0, &type);
	if (ret < 0)
		return ret;

	rproc_report_crash(rproc, type);

	return count;
}

static const struct file_operations rproc_crash_ops = {
	.write = rproc_crash_write,
	.open = simple_open,
	.llseek = generic_file_llseek,
};

/* Expose resource table content via debugfs */
static int rproc_rsc_table_show(struct seq_file *seq, void *p)
{
	static const char * const types[] = {"carveout", "devmem", "trace", "vdev"};
	struct rproc *rproc = seq->private;
	struct resource_table *table = rproc->table_ptr;
	struct fw_rsc_carveout *c;
	struct fw_rsc_devmem *d;
	struct fw_rsc_trace *t;
	struct fw_rsc_vdev *v;
	int i, j;

	if (!table) {
		seq_puts(seq, "No resource table found\n");
		return 0;
	}

	for (i = 0; i < table->num; i++) {
		int offset = table->offset[i];
		struct fw_rsc_hdr *hdr = (void *)table + offset;
		void *rsc = (void *)hdr + sizeof(*hdr);

		switch (hdr->type) {
		case RSC_CARVEOUT:
			c = rsc;
			seq_printf(seq, "Entry %d is of type %s\n", i, types[hdr->type]);
			seq_printf(seq, "  Device Address 0x%x\n", c->da);
			seq_printf(seq, "  Physical Address 0x%x\n", c->pa);
			seq_printf(seq, "  Length 0x%x Bytes\n", c->len);
			seq_printf(seq, "  Flags 0x%x\n", c->flags);
			seq_printf(seq, "  Reserved (should be zero) [%d]\n", c->reserved);
			seq_printf(seq, "  Name %s\n\n", c->name);
			break;
		case RSC_DEVMEM:
			d = rsc;
			seq_printf(seq, "Entry %d is of type %s\n", i, types[hdr->type]);
			seq_printf(seq, "  Device Address 0x%x\n", d->da);
			seq_printf(seq, "  Physical Address 0x%x\n", d->pa);
			seq_printf(seq, "  Length 0x%x Bytes\n", d->len);
			seq_printf(seq, "  Flags 0x%x\n", d->flags);
			seq_printf(seq, "  Reserved (should be zero) [%d]\n", d->reserved);
			seq_printf(seq, "  Name %s\n\n", d->name);
			break;
		case RSC_TRACE:
			t = rsc;
			seq_printf(seq, "Entry %d is of type %s\n", i, types[hdr->type]);
			seq_printf(seq, "  Device Address 0x%x\n", t->da);
			seq_printf(seq, "  Length 0x%x Bytes\n", t->len);
			seq_printf(seq, "  Reserved (should be zero) [%d]\n", t->reserved);
			seq_printf(seq, "  Name %s\n\n", t->name);
			break;
		case RSC_VDEV:
			v = rsc;
			seq_printf(seq, "Entry %d is of type %s\n", i, types[hdr->type]);

			seq_printf(seq, "  ID %d\n", v->id);
			seq_printf(seq, "  Notify ID %d\n", v->notifyid);
			seq_printf(seq, "  Device features 0x%x\n", v->dfeatures);
			seq_printf(seq, "  Guest features 0x%x\n", v->gfeatures);
			seq_printf(seq, "  Config length 0x%x\n", v->config_len);
			seq_printf(seq, "  Status 0x%x\n", v->status);
			seq_printf(seq, "  Number of vrings %d\n", v->num_of_vrings);
			seq_printf(seq, "  Reserved (should be zero) [%d][%d]\n\n",
				   v->reserved[0], v->reserved[1]);

			for (j = 0; j < v->num_of_vrings; j++) {
				seq_printf(seq, "  Vring %d\n", j);
				seq_printf(seq, "    Device Address 0x%x\n", v->vring[j].da);
				seq_printf(seq, "    Alignment %d\n", v->vring[j].align);
				seq_printf(seq, "    Number of buffers %d\n", v->vring[j].num);
				seq_printf(seq, "    Notify ID %d\n", v->vring[j].notifyid);
				seq_printf(seq, "    Physical Address 0x%x\n\n",
					   v->vring[j].pa);
			}
			break;
		default:
			seq_printf(seq, "Unknown resource type found: %d [hdr: %pK]\n",
				   hdr->type, hdr);
			break;
		}
	}

	return 0;
}

DEFINE_SHOW_ATTRIBUTE(rproc_rsc_table);

/* Expose carveout content via debugfs */
static int rproc_carveouts_show(struct seq_file *seq, void *p)
{
	struct rproc *rproc = seq->private;
	struct rproc_mem_entry *carveout;

	list_for_each_entry(carveout, &rproc->carveouts, node) {
		seq_puts(seq, "Carveout memory entry:\n");
		seq_printf(seq, "\tName: %s\n", carveout->name);
		seq_printf(seq, "\tVirtual address: %pK\n", carveout->va);
		seq_printf(seq, "\tDMA address: %pad\n", &carveout->dma);
		seq_printf(seq, "\tDevice address: 0x%x\n", carveout->da);
		seq_printf(seq, "\tLength: 0x%zx Bytes\n\n", carveout->len);
	}

	return 0;
}

DEFINE_SHOW_ATTRIBUTE(rproc_carveouts);

void rproc_remove_trace_file(struct dentry *tfile)
{
	debugfs_remove(tfile);
}

struct dentry *rproc_create_trace_file(const char *name, struct rproc *rproc,
				       struct rproc_debug_trace *trace)
{
	struct dentry *tfile;

	tfile = debugfs_create_file(name, 0400, rproc->dbg_dir, trace,
				    &trace_rproc_ops);
	if (!tfile) {
		dev_err(&rproc->dev, "failed to create debugfs trace entry\n");
		return NULL;
	}

	return tfile;
}

void rproc_delete_debug_dir(struct rproc *rproc)
{
	debugfs_remove_recursive(rproc->dbg_dir);
}

void rproc_create_debug_dir(struct rproc *rproc)
{
	struct device *dev = &rproc->dev;

	if (!rproc_dbg)
		return;

	rproc->dbg_dir = debugfs_create_dir(dev_name(dev), rproc_dbg);
	if (!rproc->dbg_dir)
		return;

	debugfs_create_file("name", 0400, rproc->dbg_dir,
			    rproc, &rproc_name_ops);
	debugfs_create_file("recovery", 0600, rproc->dbg_dir,
			    rproc, &rproc_recovery_ops);
	debugfs_create_file("crash", 0200, rproc->dbg_dir,
			    rproc, &rproc_crash_ops);
	debugfs_create_file("resource_table", 0400, rproc->dbg_dir,
			    rproc, &rproc_rsc_table_fops);
	debugfs_create_file("carveout_memories", 0400, rproc->dbg_dir,
			    rproc, &rproc_carveouts_fops);
}

void __init rproc_init_debugfs(void)
{
	if (debugfs_initialized()) {
		rproc_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL);
		if (!rproc_dbg)
			pr_err("can't create debugfs dir\n");
	}
}

void __exit rproc_exit_debugfs(void)
{
	debugfs_remove(rproc_dbg);
}
Commit	Line	Data
1802d0be	1	// SPDX-License-Identifier: GPL-2.0-only
6391a706 OBC	2	/*
	3	* Remote Processor Framework
	4	*
	5	* Copyright (C) 2011 Texas Instruments, Inc.
	6	* Copyright (C) 2011 Google, Inc.
	7	*
	8	* Ohad Ben-Cohen <ohad@wizery.com>
	9	* Mark Grosen <mgrosen@ti.com>
	10	* Brian Swetland <swetland@google.com>
	11	* Fernando Guzman Lugo <fernando.lugo@ti.com>
	12	* Suman Anna <s-anna@ti.com>
	13	* Robert Tivy <rtivy@ti.com>
	14	* Armando Uribe De Leon <x0095078@ti.com>
6391a706 OBC	15	*/
	16
	17	#define pr_fmt(fmt) "%s: " fmt, __func__
	18
	19	#include <linux/kernel.h>
	20	#include <linux/debugfs.h>
	21	#include <linux/remoteproc.h>
	22	#include <linux/device.h>
2e37abb8 FGL	23	#include <linux/uaccess.h>
	24
	25	#include "remoteproc_internal.h"
6391a706 OBC	26
	27	/* remoteproc debugfs parent dir */
	28	static struct dentry *rproc_dbg;
	29
	30	/*
	31	* Some remote processors may support dumping trace logs into a shared
	32	* memory buffer. We expose this trace buffer using debugfs, so users
	33	* can easily tell what's going on remotely.
	34	*
	35	* We will most probably improve the rproc tracing facilities later on,
	36	* but this kind of lightweight and simple mechanism is always good to have,
	37	* as it provides very early tracing with little to no dependencies at all.
	38	*/
	39	static ssize_t rproc_trace_read(struct file filp, char __user userbuf,
730f84ce	40	size_t count, loff_t *ppos)
6391a706	41	{
a987e6b9 LP	42	struct rproc_debug_trace *data = filp->private_data;
	43	struct rproc_mem_entry *trace = &data->trace_mem;
	44	void *va;
	45	char buf[100];
	46	int len;
	47
	48	va = rproc_da_to_va(data->rproc, trace->da, trace->len);
	49
	50	if (!va) {
	51	len = scnprintf(buf, sizeof(buf), "Trace %s not available\n",
	52	trace->name);
	53	va = buf;
	54	} else {
	55	len = strnlen(va, trace->len);
	56	}
6391a706	57
a987e6b9	58	return simple_read_from_buffer(userbuf, count, ppos, va, len);
6391a706 OBC	59	}
6391a706 OBC	60
6391a706 OBC	61	static const struct file_operations trace_rproc_ops = {
6391a706 OBC	62	.read = rproc_trace_read,
234e3405	63	.open = simple_open,
6391a706 OBC	64	.llseek = generic_file_llseek,
	65	};
	66
6391a706 OBC	67	/* expose the name of the remote processor via debugfs */
6391a706 OBC	68	static ssize_t rproc_name_read(struct file filp, char __user userbuf,
730f84ce	69	size_t count, loff_t *ppos)
6391a706 OBC	70	{
	71	struct rproc *rproc = filp->private_data;
	72	/* need room for the name, a newline and a terminating null */
	73	char buf[100];
	74	int i;
	75
ae768d5f	76	i = scnprintf(buf, sizeof(buf), "%.98s\n", rproc->name);
6391a706 OBC	77
	78	return simple_read_from_buffer(userbuf, count, ppos, buf, i);
	79	}
	80
	81	static const struct file_operations rproc_name_ops = {
	82	.read = rproc_name_read,
234e3405	83	.open = simple_open,
6391a706 OBC	84	.llseek = generic_file_llseek,
	85	};
	86
2e37abb8 FGL	87	/* expose recovery flag via debugfs */
	88	static ssize_t rproc_recovery_read(struct file filp, char __user userbuf,
	89	size_t count, loff_t *ppos)
	90	{
	91	struct rproc *rproc = filp->private_data;
	92	char *buf = rproc->recovery_disabled ? "disabled\n" : "enabled\n";
	93
	94	return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
	95	}
	96
	97	/*
	98	* By writing to the 'recovery' debugfs entry, we control the behavior of the
	99	* recovery mechanism dynamically. The default value of this entry is "enabled".
	100	*
	101	* The 'recovery' debugfs entry supports these commands:
	102	*
	103	* enabled: When enabled, the remote processor will be automatically
	104	* recovered whenever it crashes. Moreover, if the remote
	105	* processor crashes while recovery is disabled, it will
	106	* be automatically recovered too as soon as recovery is enabled.
	107	*
	108	* disabled: When disabled, a remote processor will remain in a crashed
	109	* state if it crashes. This is useful for debugging purposes;
	110	* without it, debugging a crash is substantially harder.
	111	*
	112	* recover: This function will trigger an immediate recovery if the
	113	* remote processor is in a crashed state, without changing
	114	* or checking the recovery state (enabled/disabled).
	115	* This is useful during debugging sessions, when one expects
	116	* additional crashes to happen after enabling recovery. In this
	117	* case, enabling recovery will make it hard to debug subsequent
	118	* crashes, so it's recommended to keep recovery disabled, and
	119	* instead use the "recover" command as needed.
	120	*/
	121	static ssize_t
	122	rproc_recovery_write(struct file filp, const char __user user_buf,
	123	size_t count, loff_t *ppos)
	124	{
	125	struct rproc *rproc = filp->private_data;
	126	char buf[10];
	127	int ret;
	128
92792e48	129	if (count < 1 \|\| count > sizeof(buf))
47fff9fd	130	return -EINVAL;
2e37abb8 FGL	131
	132	ret = copy_from_user(buf, user_buf, count);
	133	if (ret)
bec109a4	134	return -EFAULT;
2e37abb8 FGL	135
	136	/* remove end of line */
	137	if (buf[count - 1] == '\n')
	138	buf[count - 1] = '\0';
	139
	140	if (!strncmp(buf, "enabled", count)) {
e138cce3	141	/* change the flag and begin the recovery process if needed */
2e37abb8	142	rproc->recovery_disabled = false;
e138cce3	143	rproc_trigger_recovery(rproc);
2e37abb8 FGL	144	} else if (!strncmp(buf, "disabled", count)) {
	145	rproc->recovery_disabled = true;
	146	} else if (!strncmp(buf, "recover", count)) {
e138cce3 AE	147	/* begin the recovery process without changing the flag */
e138cce3 AE	148	rproc_trigger_recovery(rproc);
1f2f65c4 AE	149	} else {
1f2f65c4 AE	150	return -EINVAL;
2e37abb8 FGL	151	}
	152
	153	return count;
	154	}
	155
	156	static const struct file_operations rproc_recovery_ops = {
	157	.read = rproc_recovery_read,
	158	.write = rproc_recovery_write,
	159	.open = simple_open,
	160	.llseek = generic_file_llseek,
	161	};
	162
60042a22 XX	163	/* expose the crash trigger via debugfs */
	164	static ssize_t
	165	rproc_crash_write(struct file filp, const char __user user_buf,
	166	size_t count, loff_t *ppos)
	167	{
	168	struct rproc *rproc = filp->private_data;
	169	unsigned int type;
	170	int ret;
	171
	172	ret = kstrtouint_from_user(user_buf, count, 0, &type);
	173	if (ret < 0)
	174	return ret;
	175
	176	rproc_report_crash(rproc, type);
	177
	178	return count;
	179	}
	180
	181	static const struct file_operations rproc_crash_ops = {
	182	.write = rproc_crash_write,
	183	.open = simple_open,
	184	.llseek = generic_file_llseek,
	185	};
	186
bdd8edb9 LP	187	/* Expose resource table content via debugfs */
	188	static int rproc_rsc_table_show(struct seq_file seq, void p)
	189	{
	190	static const char * const types[] = {"carveout", "devmem", "trace", "vdev"};
	191	struct rproc *rproc = seq->private;
	192	struct resource_table *table = rproc->table_ptr;
	193	struct fw_rsc_carveout *c;
	194	struct fw_rsc_devmem *d;
	195	struct fw_rsc_trace *t;
	196	struct fw_rsc_vdev *v;
	197	int i, j;
	198
	199	if (!table) {
	200	seq_puts(seq, "No resource table found\n");
	201	return 0;
	202	}
	203
	204	for (i = 0; i < table->num; i++) {
	205	int offset = table->offset[i];
	206	struct fw_rsc_hdr hdr = (void )table + offset;
	207	void rsc = (void )hdr + sizeof(*hdr);
	208
	209	switch (hdr->type) {
	210	case RSC_CARVEOUT:
	211	c = rsc;
	212	seq_printf(seq, "Entry %d is of type %s\n", i, types[hdr->type]);
	213	seq_printf(seq, " Device Address 0x%x\n", c->da);
	214	seq_printf(seq, " Physical Address 0x%x\n", c->pa);
	215	seq_printf(seq, " Length 0x%x Bytes\n", c->len);
	216	seq_printf(seq, " Flags 0x%x\n", c->flags);
	217	seq_printf(seq, " Reserved (should be zero) [%d]\n", c->reserved);
	218	seq_printf(seq, " Name %s\n\n", c->name);
	219	break;
	220	case RSC_DEVMEM:
	221	d = rsc;
	222	seq_printf(seq, "Entry %d is of type %s\n", i, types[hdr->type]);
	223	seq_printf(seq, " Device Address 0x%x\n", d->da);
	224	seq_printf(seq, " Physical Address 0x%x\n", d->pa);
	225	seq_printf(seq, " Length 0x%x Bytes\n", d->len);
	226	seq_printf(seq, " Flags 0x%x\n", d->flags);
	227	seq_printf(seq, " Reserved (should be zero) [%d]\n", d->reserved);
	228	seq_printf(seq, " Name %s\n\n", d->name);
	229	break;
	230	case RSC_TRACE:
	231	t = rsc;
	232	seq_printf(seq, "Entry %d is of type %s\n", i, types[hdr->type]);
	233	seq_printf(seq, " Device Address 0x%x\n", t->da);
	234	seq_printf(seq, " Length 0x%x Bytes\n", t->len);
	235	seq_printf(seq, " Reserved (should be zero) [%d]\n", t->reserved);
	236	seq_printf(seq, " Name %s\n\n", t->name);
	237	break;
	238	case RSC_VDEV:
	239	v = rsc;
	240	seq_printf(seq, "Entry %d is of type %s\n", i, types[hdr->type]);
	241
	242	seq_printf(seq, " ID %d\n", v->id);
	243	seq_printf(seq, " Notify ID %d\n", v->notifyid);
	244	seq_printf(seq, " Device features 0x%x\n", v->dfeatures);
	245	seq_printf(seq, " Guest features 0x%x\n", v->gfeatures);
	246	seq_printf(seq, " Config length 0x%x\n", v->config_len);
	247	seq_printf(seq, " Status 0x%x\n", v->status);
	248	seq_printf(seq, " Number of vrings %d\n", v->num_of_vrings);
	249	seq_printf(seq, " Reserved (should be zero) [%d][%d]\n\n",
	250	v->reserved[0], v->reserved[1]);
251
252	for (j = 0; j < v->num_of_vrings; j++) {
253	seq_printf(seq, " Vring %d\n", j);
254	seq_printf(seq, " Device Address 0x%x\n", v->vring[j].da);
255	seq_printf(seq, " Alignment %d\n", v->vring[j].align);
256	seq_printf(seq, " Number of buffers %d\n", v->vring[j].num);
257	seq_printf(seq, " Notify ID %d\n", v->vring[j].notifyid);
258	seq_printf(seq, " Physical Address 0x%x\n\n",
259	v->vring[j].pa);
260	}
261	break;
262	default:
276ec993	263	seq_printf(seq, "Unknown resource type found: %d [hdr: %pK]\n",
bdd8edb9 LP	264	hdr->type, hdr);
	265	break;
	266	}
	267	}
	268
	269	return 0;
	270	}
	271
c78bc072	272	DEFINE_SHOW_ATTRIBUTE(rproc_rsc_table);
bdd8edb9	273
b8918839 LP	274	/* Expose carveout content via debugfs */
	275	static int rproc_carveouts_show(struct seq_file seq, void p)
	276	{
	277	struct rproc *rproc = seq->private;
	278	struct rproc_mem_entry *carveout;
	279
	280	list_for_each_entry(carveout, &rproc->carveouts, node) {
	281	seq_puts(seq, "Carveout memory entry:\n");
3265230c	282	seq_printf(seq, "\tName: %s\n", carveout->name);
276ec993	283	seq_printf(seq, "\tVirtual address: %pK\n", carveout->va);
b8918839 LP	284	seq_printf(seq, "\tDMA address: %pad\n", &carveout->dma);
b8918839 LP	285	seq_printf(seq, "\tDevice address: 0x%x\n", carveout->da);
096ee786	286	seq_printf(seq, "\tLength: 0x%zx Bytes\n\n", carveout->len);
b8918839 LP	287	}
	288
	289	return 0;
	290	}
	291
c78bc072	292	DEFINE_SHOW_ATTRIBUTE(rproc_carveouts);
b8918839	293
6391a706 OBC	294	void rproc_remove_trace_file(struct dentry *tfile)
	295	{
	296	debugfs_remove(tfile);
	297	}
	298
	299	struct dentry rproc_create_trace_file(const char name, struct rproc *rproc,
a987e6b9	300	struct rproc_debug_trace *trace)
6391a706 OBC	301	{
	302	struct dentry *tfile;
	303
730f84ce AS	304	tfile = debugfs_create_file(name, 0400, rproc->dbg_dir, trace,
730f84ce AS	305	&trace_rproc_ops);
6391a706	306	if (!tfile) {
b5ab5e24	307	dev_err(&rproc->dev, "failed to create debugfs trace entry\n");
6391a706 OBC	308	return NULL;
	309	}
	310
	311	return tfile;
	312	}
	313
	314	void rproc_delete_debug_dir(struct rproc *rproc)
	315	{
6391a706 OBC	316	debugfs_remove_recursive(rproc->dbg_dir);
	317	}
	318
	319	void rproc_create_debug_dir(struct rproc *rproc)
	320	{
b5ab5e24	321	struct device *dev = &rproc->dev;
6391a706 OBC	322
	323	if (!rproc_dbg)
	324	return;
	325
	326	rproc->dbg_dir = debugfs_create_dir(dev_name(dev), rproc_dbg);
	327	if (!rproc->dbg_dir)
	328	return;
	329
	330	debugfs_create_file("name", 0400, rproc->dbg_dir,
730f84ce	331	rproc, &rproc_name_ops);
e138cce3	332	debugfs_create_file("recovery", 0600, rproc->dbg_dir,
730f84ce	333	rproc, &rproc_recovery_ops);
60042a22 XX	334	debugfs_create_file("crash", 0200, rproc->dbg_dir,
60042a22 XX	335	rproc, &rproc_crash_ops);
bdd8edb9	336	debugfs_create_file("resource_table", 0400, rproc->dbg_dir,
c78bc072	337	rproc, &rproc_rsc_table_fops);
b8918839	338	debugfs_create_file("carveout_memories", 0400, rproc->dbg_dir,
c78bc072	339	rproc, &rproc_carveouts_fops);
6391a706 OBC	340	}
	341
	342	void __init rproc_init_debugfs(void)
	343	{
	344	if (debugfs_initialized()) {
	345	rproc_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL);
	346	if (!rproc_dbg)
	347	pr_err("can't create debugfs dir\n");
	348	}
	349	}
	350
	351	void __exit rproc_exit_debugfs(void)
	352	{
57971159	353	debugfs_remove(rproc_dbg);
6391a706	354	}