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[SCSI] lpfc 8.2.4 : Enhance debugfs use
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Enhance debugfs to dump HBA SLIM as well as Host SLIM

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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James Smart authored and James Bottomley committed Jan 23, 2008
1 parent 9c2face commit c95d6c6
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Showing 2 changed files with 122 additions and 25 deletions.
3 changes: 2 additions & 1 deletion drivers/scsi/lpfc/lpfc.h
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Original file line number Diff line number Diff line change
Expand Up @@ -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;
Expand Down
144 changes: 120 additions & 24 deletions drivers/scsi/lpfc/lpfc_debugfs.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -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
Expand Down Expand Up @@ -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");
Expand All @@ -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
Expand Down Expand Up @@ -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);

Expand Down Expand Up @@ -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;
Expand All @@ -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;
Expand Down Expand Up @@ -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,
Expand Down Expand Up @@ -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;
}

Expand Down Expand Up @@ -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);
Expand Down

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