[mirror_ubuntu-artful-kernel.git] / drivers / scsi / qedi / qedi_debugfs.c

/*
 * QLogic iSCSI Offload Driver
 * Copyright (c) 2016 Cavium Inc.
 *
 * This software is available under the terms of the GNU General Public License
 * (GPL) Version 2, available from the file COPYING in the main directory of
 * this source tree.
 */

#include "qedi.h"
#include "qedi_dbg.h"

#include <linux/uaccess.h>
#include <linux/debugfs.h>
#include <linux/module.h>

int qedi_do_not_recover;
static struct dentry *qedi_dbg_root;

void
qedi_dbg_host_init(struct qedi_dbg_ctx *qedi,
		   struct qedi_debugfs_ops *dops,
		   const struct file_operations *fops)
{
	char host_dirname[32];
	struct dentry *file_dentry = NULL;

	sprintf(host_dirname, "host%u", qedi->host_no);
	qedi->bdf_dentry = debugfs_create_dir(host_dirname, qedi_dbg_root);
	if (!qedi->bdf_dentry)
		return;

	while (dops) {
		if (!(dops->name))
			break;

		file_dentry = debugfs_create_file(dops->name, 0600,
						  qedi->bdf_dentry, qedi,
						  fops);
		if (!file_dentry) {
			QEDI_INFO(qedi, QEDI_LOG_DEBUGFS,
				  "Debugfs entry %s creation failed\n",
				  dops->name);
			debugfs_remove_recursive(qedi->bdf_dentry);
			return;
		}
		dops++;
		fops++;
	}
}

void
qedi_dbg_host_exit(struct qedi_dbg_ctx *qedi)
{
	debugfs_remove_recursive(qedi->bdf_dentry);
	qedi->bdf_dentry = NULL;
}

void
qedi_dbg_init(char *drv_name)
{
	qedi_dbg_root = debugfs_create_dir(drv_name, NULL);
	if (!qedi_dbg_root)
		QEDI_INFO(NULL, QEDI_LOG_DEBUGFS, "Init of debugfs failed\n");
}

void
qedi_dbg_exit(void)
{
	debugfs_remove_recursive(qedi_dbg_root);
	qedi_dbg_root = NULL;
}

static ssize_t
qedi_dbg_do_not_recover_enable(struct qedi_dbg_ctx *qedi_dbg)
{
	if (!qedi_do_not_recover)
		qedi_do_not_recover = 1;

	QEDI_INFO(qedi_dbg, QEDI_LOG_DEBUGFS, "do_not_recover=%d\n",
		  qedi_do_not_recover);
	return 0;
}

static ssize_t
qedi_dbg_do_not_recover_disable(struct qedi_dbg_ctx *qedi_dbg)
{
	if (qedi_do_not_recover)
		qedi_do_not_recover = 0;

	QEDI_INFO(qedi_dbg, QEDI_LOG_DEBUGFS, "do_not_recover=%d\n",
		  qedi_do_not_recover);
	return 0;
}

static struct qedi_list_of_funcs qedi_dbg_do_not_recover_ops[] = {
	{ "enable", qedi_dbg_do_not_recover_enable },
	{ "disable", qedi_dbg_do_not_recover_disable },
	{ NULL, NULL }
};

struct qedi_debugfs_ops qedi_debugfs_ops[] = {
	{ "gbl_ctx", NULL },
	{ "do_not_recover", qedi_dbg_do_not_recover_ops},
	{ "io_trace", NULL },
	{ NULL, NULL }
};

static ssize_t
qedi_dbg_do_not_recover_cmd_write(struct file *filp, const char __user *buffer,
				  size_t count, loff_t *ppos)
{
	size_t cnt = 0;
	struct qedi_dbg_ctx *qedi_dbg =
			(struct qedi_dbg_ctx *)filp->private_data;
	struct qedi_list_of_funcs *lof = qedi_dbg_do_not_recover_ops;

	if (*ppos)
		return 0;

	while (lof) {
		if (!(lof->oper_str))
			break;

		if (!strncmp(lof->oper_str, buffer, strlen(lof->oper_str))) {
			cnt = lof->oper_func(qedi_dbg);
			break;
		}

		lof++;
	}
	return (count - cnt);
}

static ssize_t
qedi_dbg_do_not_recover_cmd_read(struct file *filp, char __user *buffer,
				 size_t count, loff_t *ppos)
{
	size_t cnt = 0;

	if (*ppos)
		return 0;

	cnt = sprintf(buffer, "do_not_recover=%d\n", qedi_do_not_recover);
	cnt = min_t(int, count, cnt - *ppos);
	*ppos += cnt;
	return cnt;
}

static int
qedi_gbl_ctx_show(struct seq_file *s, void *unused)
{
	struct qedi_fastpath *fp = NULL;
	struct qed_sb_info *sb_info = NULL;
	struct status_block *sb = NULL;
	struct global_queue *que = NULL;
	int id;
	u16 prod_idx;
	struct qedi_ctx *qedi = s->private;
	unsigned long flags;

	seq_puts(s, " DUMP CQ CONTEXT:\n");

	for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
		spin_lock_irqsave(&qedi->hba_lock, flags);
		seq_printf(s, "=========FAST CQ PATH [%d] ==========\n", id);
		fp = &qedi->fp_array[id];
		sb_info = fp->sb_info;
		sb = sb_info->sb_virt;
		prod_idx = (sb->pi_array[QEDI_PROTO_CQ_PROD_IDX] &
			    STATUS_BLOCK_PROD_INDEX_MASK);
		seq_printf(s, "SB PROD IDX: %d\n", prod_idx);
		que = qedi->global_queues[fp->sb_id];
		seq_printf(s, "DRV CONS IDX: %d\n", que->cq_cons_idx);
		seq_printf(s, "CQ complete host memory: %d\n", fp->sb_id);
		seq_puts(s, "=========== END ==================\n\n\n");
		spin_unlock_irqrestore(&qedi->hba_lock, flags);
	}
	return 0;
}

static int
qedi_dbg_gbl_ctx_open(struct inode *inode, struct file *file)
{
	struct qedi_dbg_ctx *qedi_dbg = inode->i_private;
	struct qedi_ctx *qedi = container_of(qedi_dbg, struct qedi_ctx,
					     dbg_ctx);

	return single_open(file, qedi_gbl_ctx_show, qedi);
}

static int
qedi_io_trace_show(struct seq_file *s, void *unused)
{
	int id, idx = 0;
	struct qedi_ctx *qedi = s->private;
	struct qedi_io_log *io_log;
	unsigned long flags;

	seq_puts(s, " DUMP IO LOGS:\n");
	spin_lock_irqsave(&qedi->io_trace_lock, flags);
	idx = qedi->io_trace_idx;
	for (id = 0; id < QEDI_IO_TRACE_SIZE; id++) {
		io_log = &qedi->io_trace_buf[idx];
		seq_printf(s, "iodir-%d:", io_log->direction);
		seq_printf(s, "tid-0x%x:", io_log->task_id);
		seq_printf(s, "cid-0x%x:", io_log->cid);
		seq_printf(s, "lun-%d:", io_log->lun);
		seq_printf(s, "op-0x%02x:", io_log->op);
		seq_printf(s, "0x%02x%02x%02x%02x:", io_log->lba[0],
			   io_log->lba[1], io_log->lba[2], io_log->lba[3]);
		seq_printf(s, "buflen-%d:", io_log->bufflen);
		seq_printf(s, "sgcnt-%d:", io_log->sg_count);
		seq_printf(s, "res-0x%08x:", io_log->result);
		seq_printf(s, "jif-%lu:", io_log->jiffies);
		seq_printf(s, "blk_req_cpu-%d:", io_log->blk_req_cpu);
		seq_printf(s, "req_cpu-%d:", io_log->req_cpu);
		seq_printf(s, "intr_cpu-%d:", io_log->intr_cpu);
		seq_printf(s, "blk_rsp_cpu-%d\n", io_log->blk_rsp_cpu);

		idx++;
		if (idx == QEDI_IO_TRACE_SIZE)
			idx = 0;
	}
	spin_unlock_irqrestore(&qedi->io_trace_lock, flags);
	return 0;
}

static int
qedi_dbg_io_trace_open(struct inode *inode, struct file *file)
{
	struct qedi_dbg_ctx *qedi_dbg = inode->i_private;
	struct qedi_ctx *qedi = container_of(qedi_dbg, struct qedi_ctx,
					     dbg_ctx);

	return single_open(file, qedi_io_trace_show, qedi);
}

const struct file_operations qedi_dbg_fops[] = {
	qedi_dbg_fileops_seq(qedi, gbl_ctx),
	qedi_dbg_fileops(qedi, do_not_recover),
	qedi_dbg_fileops_seq(qedi, io_trace),
	{ },
};
Commit	Line	Data
ace7f46b MR	1	/*
	2	* QLogic iSCSI Offload Driver
	3	* Copyright (c) 2016 Cavium Inc.
	4	*
	5	* This software is available under the terms of the GNU General Public License
	6	* (GPL) Version 2, available from the file COPYING in the main directory of
	7	* this source tree.
	8	*/
	9
	10	#include "qedi.h"
	11	#include "qedi_dbg.h"
	12
	13	#include <linux/uaccess.h>
	14	#include <linux/debugfs.h>
	15	#include <linux/module.h>
	16
bd571195	17	int qedi_do_not_recover;
ace7f46b MR	18	static struct dentry *qedi_dbg_root;
	19
	20	void
	21	qedi_dbg_host_init(struct qedi_dbg_ctx *qedi,
	22	struct qedi_debugfs_ops *dops,
	23	const struct file_operations *fops)
	24	{
	25	char host_dirname[32];
	26	struct dentry *file_dentry = NULL;
	27
	28	sprintf(host_dirname, "host%u", qedi->host_no);
	29	qedi->bdf_dentry = debugfs_create_dir(host_dirname, qedi_dbg_root);
	30	if (!qedi->bdf_dentry)
	31	return;
	32
	33	while (dops) {
	34	if (!(dops->name))
	35	break;
	36
	37	file_dentry = debugfs_create_file(dops->name, 0600,
	38	qedi->bdf_dentry, qedi,
	39	fops);
	40	if (!file_dentry) {
	41	QEDI_INFO(qedi, QEDI_LOG_DEBUGFS,
	42	"Debugfs entry %s creation failed\n",
	43	dops->name);
	44	debugfs_remove_recursive(qedi->bdf_dentry);
	45	return;
	46	}
	47	dops++;
	48	fops++;
	49	}
	50	}
	51
	52	void
	53	qedi_dbg_host_exit(struct qedi_dbg_ctx *qedi)
	54	{
	55	debugfs_remove_recursive(qedi->bdf_dentry);
	56	qedi->bdf_dentry = NULL;
	57	}
	58
	59	void
	60	qedi_dbg_init(char *drv_name)
	61	{
	62	qedi_dbg_root = debugfs_create_dir(drv_name, NULL);
	63	if (!qedi_dbg_root)
	64	QEDI_INFO(NULL, QEDI_LOG_DEBUGFS, "Init of debugfs failed\n");
	65	}
	66
	67	void
	68	qedi_dbg_exit(void)
	69	{
	70	debugfs_remove_recursive(qedi_dbg_root);
	71	qedi_dbg_root = NULL;
	72	}
	73
	74	static ssize_t
	75	qedi_dbg_do_not_recover_enable(struct qedi_dbg_ctx *qedi_dbg)
	76	{
bd571195 AB	77	if (!qedi_do_not_recover)
bd571195 AB	78	qedi_do_not_recover = 1;
ace7f46b MR	79
ace7f46b MR	80	QEDI_INFO(qedi_dbg, QEDI_LOG_DEBUGFS, "do_not_recover=%d\n",
bd571195	81	qedi_do_not_recover);
ace7f46b MR	82	return 0;
	83	}
	84
	85	static ssize_t
	86	qedi_dbg_do_not_recover_disable(struct qedi_dbg_ctx *qedi_dbg)
	87	{
bd571195 AB	88	if (qedi_do_not_recover)
bd571195 AB	89	qedi_do_not_recover = 0;
ace7f46b MR	90
ace7f46b MR	91	QEDI_INFO(qedi_dbg, QEDI_LOG_DEBUGFS, "do_not_recover=%d\n",
bd571195	92	qedi_do_not_recover);
ace7f46b MR	93	return 0;
	94	}
	95
	96	static struct qedi_list_of_funcs qedi_dbg_do_not_recover_ops[] = {
	97	{ "enable", qedi_dbg_do_not_recover_enable },
	98	{ "disable", qedi_dbg_do_not_recover_disable },
	99	{ NULL, NULL }
	100	};
	101
	102	struct qedi_debugfs_ops qedi_debugfs_ops[] = {
	103	{ "gbl_ctx", NULL },
	104	{ "do_not_recover", qedi_dbg_do_not_recover_ops},
	105	{ "io_trace", NULL },
	106	{ NULL, NULL }
	107	};
	108
	109	static ssize_t
	110	qedi_dbg_do_not_recover_cmd_write(struct file filp, const char __user buffer,
	111	size_t count, loff_t *ppos)
	112	{
	113	size_t cnt = 0;
	114	struct qedi_dbg_ctx *qedi_dbg =
	115	(struct qedi_dbg_ctx *)filp->private_data;
	116	struct qedi_list_of_funcs *lof = qedi_dbg_do_not_recover_ops;
	117
	118	if (*ppos)
	119	return 0;
	120
	121	while (lof) {
	122	if (!(lof->oper_str))
	123	break;
	124
	125	if (!strncmp(lof->oper_str, buffer, strlen(lof->oper_str))) {
	126	cnt = lof->oper_func(qedi_dbg);
	127	break;
	128	}
	129
	130	lof++;
	131	}
	132	return (count - cnt);
	133	}
	134
	135	static ssize_t
	136	qedi_dbg_do_not_recover_cmd_read(struct file filp, char __user buffer,
	137	size_t count, loff_t *ppos)
	138	{
	139	size_t cnt = 0;
	140
	141	if (*ppos)
	142	return 0;
	143
bd571195	144	cnt = sprintf(buffer, "do_not_recover=%d\n", qedi_do_not_recover);
ace7f46b MR	145	cnt = min_t(int, count, cnt - *ppos);
	146	*ppos += cnt;
	147	return cnt;
	148	}
	149
	150	static int
	151	qedi_gbl_ctx_show(struct seq_file s, void unused)
	152	{
	153	struct qedi_fastpath *fp = NULL;
	154	struct qed_sb_info *sb_info = NULL;
	155	struct status_block *sb = NULL;
	156	struct global_queue *que = NULL;
	157	int id;
	158	u16 prod_idx;
	159	struct qedi_ctx *qedi = s->private;
	160	unsigned long flags;
	161
	162	seq_puts(s, " DUMP CQ CONTEXT:\n");
	163
	164	for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
	165	spin_lock_irqsave(&qedi->hba_lock, flags);
	166	seq_printf(s, "=========FAST CQ PATH [%d] ==========\n", id);
	167	fp = &qedi->fp_array[id];
	168	sb_info = fp->sb_info;
	169	sb = sb_info->sb_virt;
	170	prod_idx = (sb->pi_array[QEDI_PROTO_CQ_PROD_IDX] &
	171	STATUS_BLOCK_PROD_INDEX_MASK);
	172	seq_printf(s, "SB PROD IDX: %d\n", prod_idx);
	173	que = qedi->global_queues[fp->sb_id];
	174	seq_printf(s, "DRV CONS IDX: %d\n", que->cq_cons_idx);
	175	seq_printf(s, "CQ complete host memory: %d\n", fp->sb_id);
	176	seq_puts(s, "=========== END ==================\n\n\n");
	177	spin_unlock_irqrestore(&qedi->hba_lock, flags);
	178	}
	179	return 0;
	180	}
	181
	182	static int
	183	qedi_dbg_gbl_ctx_open(struct inode inode, struct file file)
	184	{
	185	struct qedi_dbg_ctx *qedi_dbg = inode->i_private;
	186	struct qedi_ctx *qedi = container_of(qedi_dbg, struct qedi_ctx,
	187	dbg_ctx);
	188
	189	return single_open(file, qedi_gbl_ctx_show, qedi);
	190	}
	191
	192	static int
	193	qedi_io_trace_show(struct seq_file s, void unused)
	194	{
	195	int id, idx = 0;
	196	struct qedi_ctx *qedi = s->private;
	197	struct qedi_io_log *io_log;
	198	unsigned long flags;
	199
	200	seq_puts(s, " DUMP IO LOGS:\n");
	201	spin_lock_irqsave(&qedi->io_trace_lock, flags);
	202	idx = qedi->io_trace_idx;
	203	for (id = 0; id < QEDI_IO_TRACE_SIZE; id++) {
	204	io_log = &qedi->io_trace_buf[idx];
	205	seq_printf(s, "iodir-%d:", io_log->direction);
	206	seq_printf(s, "tid-0x%x:", io_log->task_id);
	207	seq_printf(s, "cid-0x%x:", io_log->cid);
	208	seq_printf(s, "lun-%d:", io_log->lun);
209	seq_printf(s, "op-0x%02x:", io_log->op);
210	seq_printf(s, "0x%02x%02x%02x%02x:", io_log->lba[0],
211	io_log->lba[1], io_log->lba[2], io_log->lba[3]);
212	seq_printf(s, "buflen-%d:", io_log->bufflen);
213	seq_printf(s, "sgcnt-%d:", io_log->sg_count);
214	seq_printf(s, "res-0x%08x:", io_log->result);
215	seq_printf(s, "jif-%lu:", io_log->jiffies);
216	seq_printf(s, "blk_req_cpu-%d:", io_log->blk_req_cpu);
217	seq_printf(s, "req_cpu-%d:", io_log->req_cpu);
218	seq_printf(s, "intr_cpu-%d:", io_log->intr_cpu);
219	seq_printf(s, "blk_rsp_cpu-%d\n", io_log->blk_rsp_cpu);
220
221	idx++;
222	if (idx == QEDI_IO_TRACE_SIZE)
223	idx = 0;
224	}
225	spin_unlock_irqrestore(&qedi->io_trace_lock, flags);
226	return 0;
227	}
228
229	static int
230	qedi_dbg_io_trace_open(struct inode inode, struct file file)
231	{
232	struct qedi_dbg_ctx *qedi_dbg = inode->i_private;
233	struct qedi_ctx *qedi = container_of(qedi_dbg, struct qedi_ctx,
234	dbg_ctx);
235
236	return single_open(file, qedi_io_trace_show, qedi);
237	}
238
239	const struct file_operations qedi_dbg_fops[] = {
240	qedi_dbg_fileops_seq(qedi, gbl_ctx),
241	qedi_dbg_fileops(qedi, do_not_recover),
242	qedi_dbg_fileops_seq(qedi, io_trace),
efacae6d	243	{ },
ace7f46b	244	};