Commit c95d6c6c authored by James Smart's avatar James Smart Committed by James Bottomley
Browse files

[SCSI] lpfc 8.2.4 : Enhance debugfs use 



Enhance debugfs to dump HBA SLIM as well as Host SLIM

Signed-off-by: default avatarJames Smart <James.Smart@emulex.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
parent 9c2face6

drivers/scsi/lpfc/lpfc.h

+2 −1
Original line number Diff line number Diff line
@@ -578,7 +578,8 @@ struct lpfc_hba { 
	struct dentry *hba_debugfs_root;

	atomic_t debugfs_vport_count;

	struct dentry *debug_hbqinfo;

	struct dentry *debug_dumpslim;

	struct dentry *debug_dumpHostSlim;

	struct dentry *debug_dumpHBASlim;

	struct dentry *debug_slow_ring_trc;

	struct lpfc_debugfs_trc *slow_ring_trc;

	atomic_t slow_ring_trc_cnt;

drivers/scsi/lpfc/lpfc_debugfs.c

+120 −24
Original line number Diff line number Diff line
@@ -43,6 +43,7 @@ 
#include "lpfc_crtn.h"

#include "lpfc_vport.h"

#include "lpfc_version.h"

#include "lpfc_compat.h"

#include "lpfc_debugfs.h"



#ifdef CONFIG_LPFC_DEBUG_FS
@@ -75,18 +76,18 @@ module_param(lpfc_debugfs_enable, int, 0); 
MODULE_PARM_DESC(lpfc_debugfs_enable, "Enable debugfs services");



/* This MUST be a power of 2 */

static int lpfc_debugfs_max_disc_trc = 0;

static int lpfc_debugfs_max_disc_trc;

module_param(lpfc_debugfs_max_disc_trc, int, 0);

MODULE_PARM_DESC(lpfc_debugfs_max_disc_trc,

	"Set debugfs discovery trace depth");



/* This MUST be a power of 2 */

static int lpfc_debugfs_max_slow_ring_trc = 0;

static int lpfc_debugfs_max_slow_ring_trc;

module_param(lpfc_debugfs_max_slow_ring_trc, int, 0);

MODULE_PARM_DESC(lpfc_debugfs_max_slow_ring_trc,

	"Set debugfs slow ring trace depth");



static int lpfc_debugfs_mask_disc_trc = 0;

int lpfc_debugfs_mask_disc_trc;

module_param(lpfc_debugfs_mask_disc_trc, int, 0);

MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc,

	"Set debugfs discovery trace mask");
@@ -100,8 +101,11 @@ MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc, 
#define LPFC_NODELIST_SIZE 8192

#define LPFC_NODELIST_ENTRY_SIZE 120



/* dumpslim output buffer size */

#define LPFC_DUMPSLIM_SIZE 4096

/* dumpHBASlim output buffer size */

#define LPFC_DUMPHBASLIM_SIZE 4096



/* dumpHostSlim output buffer size */

#define LPFC_DUMPHOSTSLIM_SIZE 4096



/* hbqinfo output buffer size */

#define LPFC_HBQINFO_SIZE 8192
@@ -298,18 +302,58 @@ lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size) 
	return len;

}



static int lpfc_debugfs_last_hba_slim_off;



static int

lpfc_debugfs_dumpHBASlim_data(struct lpfc_hba *phba, char *buf, int size)

{

	int len = 0;

	int i, off;

	uint32_t *ptr;

	char buffer[1024];



	off = 0;

	spin_lock_irq(&phba->hbalock);



	len +=  snprintf(buf+len, size-len, "HBA SLIM\n");

	lpfc_memcpy_from_slim(buffer,

		((uint8_t *)phba->MBslimaddr) + lpfc_debugfs_last_hba_slim_off,

		1024);



	ptr = (uint32_t *)&buffer[0];

	off = lpfc_debugfs_last_hba_slim_off;



	/* Set it up for the next time */

	lpfc_debugfs_last_hba_slim_off += 1024;

	if (lpfc_debugfs_last_hba_slim_off >= 4096)

		lpfc_debugfs_last_hba_slim_off = 0;



	i = 1024;

	while (i > 0) {

		len +=  snprintf(buf+len, size-len,

		"%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",

		off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),

		*(ptr+5), *(ptr+6), *(ptr+7));

		ptr += 8;

		i -= (8 * sizeof(uint32_t));

		off += (8 * sizeof(uint32_t));

	}



	spin_unlock_irq(&phba->hbalock);

	return len;

}



static int

lpfc_debugfs_dumpslim_data(struct lpfc_hba *phba, char *buf, int size)

lpfc_debugfs_dumpHostSlim_data(struct lpfc_hba *phba, char *buf, int size)

{

	int len = 0;

	int cnt, i, off;

	int i, off;

	uint32_t word0, word1, word2, word3;

	uint32_t *ptr;

	struct lpfc_pgp *pgpp;

	struct lpfc_sli *psli = &phba->sli;

	struct lpfc_sli_ring *pring;



	cnt = LPFC_DUMPSLIM_SIZE;

	off = 0;

	spin_lock_irq(&phba->hbalock);
@@ -621,7 +665,7 @@ lpfc_debugfs_hbqinfo_open(struct inode *inode, struct file *file) 
}



static int

lpfc_debugfs_dumpslim_open(struct inode *inode, struct file *file)

lpfc_debugfs_dumpHBASlim_open(struct inode *inode, struct file *file)

{

	struct lpfc_hba *phba = inode->i_private;

	struct lpfc_debug *debug;
@@ -632,14 +676,41 @@ lpfc_debugfs_dumpslim_open(struct inode *inode, struct file *file) 
		goto out;



	/* Round to page boundry */

	debug->buffer = kmalloc(LPFC_DUMPSLIM_SIZE, GFP_KERNEL);

	debug->buffer = kmalloc(LPFC_DUMPHBASLIM_SIZE, GFP_KERNEL);

	if (!debug->buffer) {

		kfree(debug);

		goto out;

	}



	debug->len = lpfc_debugfs_dumpslim_data(phba, debug->buffer,

		LPFC_DUMPSLIM_SIZE);

	debug->len = lpfc_debugfs_dumpHBASlim_data(phba, debug->buffer,

		LPFC_DUMPHBASLIM_SIZE);

	file->private_data = debug;



	rc = 0;

out:

	return rc;

}



static int

lpfc_debugfs_dumpHostSlim_open(struct inode *inode, struct file *file)

{

	struct lpfc_hba *phba = inode->i_private;

	struct lpfc_debug *debug;

	int rc = -ENOMEM;



	debug = kmalloc(sizeof(*debug), GFP_KERNEL);

	if (!debug)

		goto out;



	/* Round to page boundry */

	debug->buffer = kmalloc(LPFC_DUMPHOSTSLIM_SIZE, GFP_KERNEL);

	if (!debug->buffer) {

		kfree(debug);

		goto out;

	}



	debug->len = lpfc_debugfs_dumpHostSlim_data(phba, debug->buffer,

		LPFC_DUMPHOSTSLIM_SIZE);

	file->private_data = debug;



	rc = 0;
@@ -742,10 +813,19 @@ static struct file_operations lpfc_debugfs_op_hbqinfo = { 
	.release =      lpfc_debugfs_release,

};



#undef lpfc_debugfs_op_dumpslim

static struct file_operations lpfc_debugfs_op_dumpslim = {

#undef lpfc_debugfs_op_dumpHBASlim

static struct file_operations lpfc_debugfs_op_dumpHBASlim = {

	.owner =        THIS_MODULE,

	.open =         lpfc_debugfs_dumpHBASlim_open,

	.llseek =       lpfc_debugfs_lseek,

	.read =         lpfc_debugfs_read,

	.release =      lpfc_debugfs_release,

};



#undef lpfc_debugfs_op_dumpHostSlim

static struct file_operations lpfc_debugfs_op_dumpHostSlim = {

	.owner =        THIS_MODULE,

	.open =         lpfc_debugfs_dumpslim_open,

	.open =         lpfc_debugfs_dumpHostSlim_open,

	.llseek =       lpfc_debugfs_lseek,

	.read =         lpfc_debugfs_read,

	.release =      lpfc_debugfs_release,
@@ -813,15 +893,27 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport) 
			goto debug_failed;

		}



		/* Setup dumpslim */

		snprintf(name, sizeof(name), "dumpslim");

		phba->debug_dumpslim =

		/* Setup dumpHBASlim */

		snprintf(name, sizeof(name), "dumpHBASlim");

		phba->debug_dumpHBASlim =

			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,

				 phba->hba_debugfs_root,

				 phba, &lpfc_debugfs_op_dumpslim);

		if (!phba->debug_dumpslim) {

				 phba, &lpfc_debugfs_op_dumpHBASlim);

		if (!phba->debug_dumpHBASlim) {

			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,

				"0409 Cannot create debugfs dumpslim\n");

				"0409 Cannot create debugfs dumpHBASlim\n");

			goto debug_failed;

		}



		/* Setup dumpHostSlim */

		snprintf(name, sizeof(name), "dumpHostSlim");

		phba->debug_dumpHostSlim =

			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,

				 phba->hba_debugfs_root,

				 phba, &lpfc_debugfs_op_dumpHostSlim);

		if (!phba->debug_dumpHostSlim) {

			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,

				"0409 Cannot create debugfs dumpHostSlim\n");

			goto debug_failed;

		}
@@ -971,9 +1063,13 @@ lpfc_debugfs_terminate(struct lpfc_vport *vport) 
			debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */

			phba->debug_hbqinfo = NULL;

		}

		if (phba->debug_dumpslim) {

			debugfs_remove(phba->debug_dumpslim); /* dumpslim */

			phba->debug_dumpslim = NULL;

		if (phba->debug_dumpHBASlim) {

			debugfs_remove(phba->debug_dumpHBASlim); /* HBASlim */

			phba->debug_dumpHBASlim = NULL;

		}

		if (phba->debug_dumpHostSlim) {

			debugfs_remove(phba->debug_dumpHostSlim); /* HostSlim */

			phba->debug_dumpHostSlim = NULL;

		}

		if (phba->slow_ring_trc) {

			kfree(phba->slow_ring_trc);