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linux/drivers/s390/scsi/zfcp_dbf.c
Swen Schillig 5ffd51a5e4 [SCSI] zfcp: replace current ERP logging with a more convenient version 
The current number based id ERP logging is replaced by a string
based tag version. The benefit is an easier location of the code in
question and the removal of the lengthy array referencing the
individual messages.
The string (7 bytes) based version does not use more space since those
bytes were "used" anyway due to the alignment of the structure.
The encoding of the 7 byte string is as follows
        [0-1] = filename
        [2-5] = task/function
        [6]   = section
Due to the character of this string (fixed length) a string
termination is not required here.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-12 12:58:20 -05:00

1161 lines
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/*
* zfcp device driver
*
* Debug traces for zfcp.
*
* Copyright IBM Corporation 2002, 2008
*/
#define KMSG_COMPONENT "zfcp"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/ctype.h>
#include <asm/debug.h>
#include "zfcp_ext.h"
static u32 dbfsize = 4;
module_param(dbfsize, uint, 0400);
MODULE_PARM_DESC(dbfsize,
"number of pages for each debug feature area (default 4)");
static void zfcp_dbf_hexdump(debug_info_t *dbf, void *to, int to_len,
int level, char *from, int from_len)
{
int offset;
struct zfcp_dbf_dump *dump = to;
int room = to_len - sizeof(*dump);
for (offset = 0; offset < from_len; offset += dump->size) {
memset(to, 0, to_len);
strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
dump->total_size = from_len;
dump->offset = offset;
dump->size = min(from_len - offset, room);
memcpy(dump->data, from + offset, dump->size);
debug_event(dbf, level, dump, dump->size + sizeof(*dump));
}
}
/* FIXME: this duplicate this code in s390 debug feature */
static void zfcp_dbf_timestamp(unsigned long long stck, struct timespec *time)
{
unsigned long long sec;
stck -= 0x8126d60e46000000LL - (0x3c26700LL * 1000000 * 4096);
sec = stck >> 12;
do_div(sec, 1000000);
time->tv_sec = sec;
stck -= (sec * 1000000) << 12;
time->tv_nsec = ((stck * 1000) >> 12);
}
static void zfcp_dbf_tag(char **p, const char *label, const char *tag)
{
int i;
*p += sprintf(*p, "%-24s", label);
for (i = 0; i < ZFCP_DBF_TAG_SIZE; i++)
*p += sprintf(*p, "%c", tag[i]);
*p += sprintf(*p, "\n");
}
static void zfcp_dbf_outs(char **buf, const char *s1, const char *s2)
{
*buf += sprintf(*buf, "%-24s%s\n", s1, s2);
}
static void zfcp_dbf_out(char **buf, const char *s, const char *format, ...)
{
va_list arg;
*buf += sprintf(*buf, "%-24s", s);
va_start(arg, format);
*buf += vsprintf(*buf, format, arg);
va_end(arg);
*buf += sprintf(*buf, "\n");
}
static void zfcp_dbf_outd(char **p, const char *label, char *buffer,
int buflen, int offset, int total_size)
{
if (!offset)
*p += sprintf(*p, "%-24s ", label);
while (buflen--) {
if (offset > 0) {
if ((offset % 32) == 0)
*p += sprintf(*p, "\n%-24c ", ' ');
else if ((offset % 4) == 0)
*p += sprintf(*p, " ");
}
*p += sprintf(*p, "%02x", *buffer++);
if (++offset == total_size) {
*p += sprintf(*p, "\n");
break;
}
}
if (!total_size)
*p += sprintf(*p, "\n");
}
static int zfcp_dbf_view_header(debug_info_t *id, struct debug_view *view,
int area, debug_entry_t *entry, char *out_buf)
{
struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)DEBUG_DATA(entry);
struct timespec t;
char *p = out_buf;
if (strncmp(dump->tag, "dump", ZFCP_DBF_TAG_SIZE) != 0) {
zfcp_dbf_timestamp(entry->id.stck, &t);
zfcp_dbf_out(&p, "timestamp", "%011lu:%06lu",
t.tv_sec, t.tv_nsec);
zfcp_dbf_out(&p, "cpu", "%02i", entry->id.fields.cpuid);
} else {
zfcp_dbf_outd(&p, "", dump->data, dump->size, dump->offset,
dump->total_size);
if ((dump->offset + dump->size) == dump->total_size)
p += sprintf(p, "\n");
}
return p - out_buf;
}
/**
* zfcp_hba_dbf_event_fsf_response - trace event for request completion
* @fsf_req: request that has been completed
*/
void zfcp_hba_dbf_event_fsf_response(struct zfcp_fsf_req *fsf_req)
{
struct zfcp_adapter *adapter = fsf_req->adapter;
struct fsf_qtcb *qtcb = fsf_req->qtcb;
union fsf_prot_status_qual *prot_status_qual =
&qtcb->prefix.prot_status_qual;
union fsf_status_qual *fsf_status_qual = &qtcb->header.fsf_status_qual;
struct scsi_cmnd *scsi_cmnd;
struct zfcp_port *port;
struct zfcp_unit *unit;
struct zfcp_send_els *send_els;
struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
struct zfcp_hba_dbf_record_response *response = &rec->u.response;
int level;
unsigned long flags;
spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
memset(rec, 0, sizeof(*rec));
strncpy(rec->tag, "resp", ZFCP_DBF_TAG_SIZE);
if ((qtcb->prefix.prot_status != FSF_PROT_GOOD) &&
(qtcb->prefix.prot_status != FSF_PROT_FSF_STATUS_PRESENTED)) {
strncpy(rec->tag2, "perr", ZFCP_DBF_TAG_SIZE);
level = 1;
} else if (qtcb->header.fsf_status != FSF_GOOD) {
strncpy(rec->tag2, "ferr", ZFCP_DBF_TAG_SIZE);
level = 1;
} else if ((fsf_req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) ||
(fsf_req->fsf_command == FSF_QTCB_OPEN_LUN)) {
strncpy(rec->tag2, "open", ZFCP_DBF_TAG_SIZE);
level = 4;
} else if (qtcb->header.log_length) {
strncpy(rec->tag2, "qtcb", ZFCP_DBF_TAG_SIZE);
level = 5;
} else {
strncpy(rec->tag2, "norm", ZFCP_DBF_TAG_SIZE);
level = 6;
}
response->fsf_command = fsf_req->fsf_command;
response->fsf_reqid = (unsigned long)fsf_req;
response->fsf_seqno = fsf_req->seq_no;
response->fsf_issued = fsf_req->issued;
response->fsf_prot_status = qtcb->prefix.prot_status;
response->fsf_status = qtcb->header.fsf_status;
memcpy(response->fsf_prot_status_qual,
prot_status_qual, FSF_PROT_STATUS_QUAL_SIZE);
memcpy(response->fsf_status_qual,
fsf_status_qual, FSF_STATUS_QUALIFIER_SIZE);
response->fsf_req_status = fsf_req->status;
response->sbal_first = fsf_req->sbal_first;
response->sbal_last = fsf_req->sbal_last;
response->sbal_response = fsf_req->sbal_response;
response->pool = fsf_req->pool != NULL;
response->erp_action = (unsigned long)fsf_req->erp_action;
switch (fsf_req->fsf_command) {
case FSF_QTCB_FCP_CMND:
if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
break;
scsi_cmnd = (struct scsi_cmnd *)fsf_req->data;
if (scsi_cmnd) {
response->u.fcp.cmnd = (unsigned long)scsi_cmnd;
response->u.fcp.serial = scsi_cmnd->serial_number;
}
break;
case FSF_QTCB_OPEN_PORT_WITH_DID:
case FSF_QTCB_CLOSE_PORT:
case FSF_QTCB_CLOSE_PHYSICAL_PORT:
port = (struct zfcp_port *)fsf_req->data;
response->u.port.wwpn = port->wwpn;
response->u.port.d_id = port->d_id;
response->u.port.port_handle = qtcb->header.port_handle;
break;
case FSF_QTCB_OPEN_LUN:
case FSF_QTCB_CLOSE_LUN:
unit = (struct zfcp_unit *)fsf_req->data;
port = unit->port;
response->u.unit.wwpn = port->wwpn;
response->u.unit.fcp_lun = unit->fcp_lun;
response->u.unit.port_handle = qtcb->header.port_handle;
response->u.unit.lun_handle = qtcb->header.lun_handle;
break;
case FSF_QTCB_SEND_ELS:
send_els = (struct zfcp_send_els *)fsf_req->data;
response->u.els.d_id = qtcb->bottom.support.d_id;
response->u.els.ls_code = send_els->ls_code >> 24;
break;
case FSF_QTCB_ABORT_FCP_CMND:
case FSF_QTCB_SEND_GENERIC:
case FSF_QTCB_EXCHANGE_CONFIG_DATA:
case FSF_QTCB_EXCHANGE_PORT_DATA:
case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
case FSF_QTCB_UPLOAD_CONTROL_FILE:
break;
}
debug_event(adapter->hba_dbf, level, rec, sizeof(*rec));
/* have fcp channel microcode fixed to use as little as possible */
if (fsf_req->fsf_command != FSF_QTCB_FCP_CMND) {
/* adjust length skipping trailing zeros */
char *buf = (char *)qtcb + qtcb->header.log_start;
int len = qtcb->header.log_length;
for (; len && !buf[len - 1]; len--);
zfcp_dbf_hexdump(adapter->hba_dbf, rec, sizeof(*rec), level,
buf, len);
}
spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
}
/**
* zfcp_hba_dbf_event_fsf_unsol - trace event for an unsolicited status buffer
* @tag: tag indicating which kind of unsolicited status has been received
* @adapter: adapter that has issued the unsolicited status buffer
* @status_buffer: buffer containing payload of unsolicited status
*/
void zfcp_hba_dbf_event_fsf_unsol(const char *tag, struct zfcp_adapter *adapter,
struct fsf_status_read_buffer *status_buffer)
{
struct zfcp_hba_dbf_record *rec = &adapter->hba_dbf_buf;
unsigned long flags;
spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
memset(rec, 0, sizeof(*rec));
strncpy(rec->tag, "stat", ZFCP_DBF_TAG_SIZE);
strncpy(rec->tag2, tag, ZFCP_DBF_TAG_SIZE);
rec->u.status.failed = atomic_read(&adapter->stat_miss);
if (status_buffer != NULL) {
rec->u.status.status_type = status_buffer->status_type;
rec->u.status.status_subtype = status_buffer->status_subtype;
memcpy(&rec->u.status.queue_designator,
&status_buffer->queue_designator,
sizeof(struct fsf_queue_designator));
switch (status_buffer->status_type) {
case FSF_STATUS_READ_SENSE_DATA_AVAIL:
rec->u.status.payload_size =
ZFCP_DBF_UNSOL_PAYLOAD_SENSE_DATA_AVAIL;
break;
case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
rec->u.status.payload_size =
ZFCP_DBF_UNSOL_PAYLOAD_BIT_ERROR_THRESHOLD;
break;
case FSF_STATUS_READ_LINK_DOWN:
switch (status_buffer->status_subtype) {
case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
case FSF_STATUS_READ_SUB_FDISC_FAILED:
rec->u.status.payload_size =
sizeof(struct fsf_link_down_info);
}
break;
case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
rec->u.status.payload_size =
ZFCP_DBF_UNSOL_PAYLOAD_FEATURE_UPDATE_ALERT;
break;
}
memcpy(&rec->u.status.payload,
&status_buffer->payload, rec->u.status.payload_size);
}
debug_event(adapter->hba_dbf, 2, rec, sizeof(*rec));
spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
}
/**
* zfcp_hba_dbf_event_qdio - trace event for QDIO related failure
* @adapter: adapter affected by this QDIO related event
* @qdio_error: as passed by qdio module
* @sbal_index: first buffer with error condition, as passed by qdio module
* @sbal_count: number of buffers affected, as passed by qdio module
*/
void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter,
unsigned int qdio_error, int sbal_index,
int sbal_count)
{
struct zfcp_hba_dbf_record *r = &adapter->hba_dbf_buf;
unsigned long flags;
spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
memset(r, 0, sizeof(*r));
strncpy(r->tag, "qdio", ZFCP_DBF_TAG_SIZE);
r->u.qdio.qdio_error = qdio_error;
r->u.qdio.sbal_index = sbal_index;
r->u.qdio.sbal_count = sbal_count;
debug_event(adapter->hba_dbf, 0, r, sizeof(*r));
spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
}
/**
* zfcp_hba_dbf_event_berr - trace event for bit error threshold
* @adapter: adapter affected by this QDIO related event
* @req: fsf request
*/
void zfcp_hba_dbf_event_berr(struct zfcp_adapter *adapter,
struct zfcp_fsf_req *req)
{
struct zfcp_hba_dbf_record *r = &adapter->hba_dbf_buf;
struct fsf_status_read_buffer *sr_buf = req->data;
struct fsf_bit_error_payload *err = &sr_buf->payload.bit_error;
unsigned long flags;
spin_lock_irqsave(&adapter->hba_dbf_lock, flags);
memset(r, 0, sizeof(*r));
strncpy(r->tag, "berr", ZFCP_DBF_TAG_SIZE);
memcpy(&r->u.berr, err, sizeof(struct fsf_bit_error_payload));
debug_event(adapter->hba_dbf, 0, r, sizeof(*r));
spin_unlock_irqrestore(&adapter->hba_dbf_lock, flags);
}
static void zfcp_hba_dbf_view_response(char **p,
struct zfcp_hba_dbf_record_response *r)
{
struct timespec t;
zfcp_dbf_out(p, "fsf_command", "0x%08x", r->fsf_command);
zfcp_dbf_out(p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
zfcp_dbf_out(p, "fsf_seqno", "0x%08x", r->fsf_seqno);
zfcp_dbf_timestamp(r->fsf_issued, &t);
zfcp_dbf_out(p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec);
zfcp_dbf_out(p, "fsf_prot_status", "0x%08x", r->fsf_prot_status);
zfcp_dbf_out(p, "fsf_status", "0x%08x", r->fsf_status);
zfcp_dbf_outd(p, "fsf_prot_status_qual", r->fsf_prot_status_qual,
FSF_PROT_STATUS_QUAL_SIZE, 0, FSF_PROT_STATUS_QUAL_SIZE);
zfcp_dbf_outd(p, "fsf_status_qual", r->fsf_status_qual,
FSF_STATUS_QUALIFIER_SIZE, 0, FSF_STATUS_QUALIFIER_SIZE);
zfcp_dbf_out(p, "fsf_req_status", "0x%08x", r->fsf_req_status);
zfcp_dbf_out(p, "sbal_first", "0x%02x", r->sbal_first);
zfcp_dbf_out(p, "sbal_last", "0x%02x", r->sbal_last);
zfcp_dbf_out(p, "sbal_response", "0x%02x", r->sbal_response);
zfcp_dbf_out(p, "pool", "0x%02x", r->pool);
switch (r->fsf_command) {
case FSF_QTCB_FCP_CMND:
if (r->fsf_req_status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
break;
zfcp_dbf_out(p, "scsi_cmnd", "0x%0Lx", r->u.fcp.cmnd);
zfcp_dbf_out(p, "scsi_serial", "0x%016Lx", r->u.fcp.serial);
p += sprintf(*p, "\n");
break;
case FSF_QTCB_OPEN_PORT_WITH_DID:
case FSF_QTCB_CLOSE_PORT:
case FSF_QTCB_CLOSE_PHYSICAL_PORT:
zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->u.port.wwpn);
zfcp_dbf_out(p, "d_id", "0x%06x", r->u.port.d_id);
zfcp_dbf_out(p, "port_handle", "0x%08x", r->u.port.port_handle);
break;
case FSF_QTCB_OPEN_LUN:
case FSF_QTCB_CLOSE_LUN:
zfcp_dbf_out(p, "wwpn", "0x%016Lx", r->u.unit.wwpn);
zfcp_dbf_out(p, "fcp_lun", "0x%016Lx", r->u.unit.fcp_lun);
zfcp_dbf_out(p, "port_handle", "0x%08x", r->u.unit.port_handle);
zfcp_dbf_out(p, "lun_handle", "0x%08x", r->u.unit.lun_handle);
break;
case FSF_QTCB_SEND_ELS:
zfcp_dbf_out(p, "d_id", "0x%06x", r->u.els.d_id);
zfcp_dbf_out(p, "ls_code", "0x%02x", r->u.els.ls_code);
break;
case FSF_QTCB_ABORT_FCP_CMND:
case FSF_QTCB_SEND_GENERIC:
case FSF_QTCB_EXCHANGE_CONFIG_DATA:
case FSF_QTCB_EXCHANGE_PORT_DATA:
case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
case FSF_QTCB_UPLOAD_CONTROL_FILE:
break;
}
}
static void zfcp_hba_dbf_view_status(char **p,
struct zfcp_hba_dbf_record_status *r)
{
zfcp_dbf_out(p, "failed", "0x%02x", r->failed);
zfcp_dbf_out(p, "status_type", "0x%08x", r->status_type);
zfcp_dbf_out(p, "status_subtype", "0x%08x", r->status_subtype);
zfcp_dbf_outd(p, "queue_designator", (char *)&r->queue_designator,
sizeof(struct fsf_queue_designator), 0,
sizeof(struct fsf_queue_designator));
zfcp_dbf_outd(p, "payload", (char *)&r->payload, r->payload_size, 0,
r->payload_size);
}
static void zfcp_hba_dbf_view_qdio(char **p, struct zfcp_hba_dbf_record_qdio *r)
{
zfcp_dbf_out(p, "qdio_error", "0x%08x", r->qdio_error);
zfcp_dbf_out(p, "sbal_index", "0x%02x", r->sbal_index);
zfcp_dbf_out(p, "sbal_count", "0x%02x", r->sbal_count);
}
static void zfcp_hba_dbf_view_berr(char **p, struct fsf_bit_error_payload *r)
{
zfcp_dbf_out(p, "link_failures", "%d", r->link_failure_error_count);
zfcp_dbf_out(p, "loss_of_sync_err", "%d", r->loss_of_sync_error_count);
zfcp_dbf_out(p, "loss_of_sig_err", "%d", r->loss_of_signal_error_count);
zfcp_dbf_out(p, "prim_seq_err", "%d",
r->primitive_sequence_error_count);
zfcp_dbf_out(p, "inval_trans_word_err", "%d",
r->invalid_transmission_word_error_count);
zfcp_dbf_out(p, "CRC_errors", "%d", r->crc_error_count);
zfcp_dbf_out(p, "prim_seq_event_to", "%d",
r->primitive_sequence_event_timeout_count);
zfcp_dbf_out(p, "elast_buf_overrun_err", "%d",
r->elastic_buffer_overrun_error_count);
zfcp_dbf_out(p, "adv_rec_buf2buf_cred", "%d",
r->advertised_receive_b2b_credit);
zfcp_dbf_out(p, "curr_rec_buf2buf_cred", "%d",
r->current_receive_b2b_credit);
zfcp_dbf_out(p, "adv_trans_buf2buf_cred", "%d",
r->advertised_transmit_b2b_credit);
zfcp_dbf_out(p, "curr_trans_buf2buf_cred", "%d",
r->current_transmit_b2b_credit);
}
static int zfcp_hba_dbf_view_format(debug_info_t *id, struct debug_view *view,
char *out_buf, const char *in_buf)
{
struct zfcp_hba_dbf_record *r = (struct zfcp_hba_dbf_record *)in_buf;
char *p = out_buf;
if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
return 0;
zfcp_dbf_tag(&p, "tag", r->tag);
if (isalpha(r->tag2[0]))
zfcp_dbf_tag(&p, "tag2", r->tag2);
if (strncmp(r->tag, "resp", ZFCP_DBF_TAG_SIZE) == 0)
zfcp_hba_dbf_view_response(&p, &r->u.response);
else if (strncmp(r->tag, "stat", ZFCP_DBF_TAG_SIZE) == 0)
zfcp_hba_dbf_view_status(&p, &r->u.status);
else if (strncmp(r->tag, "qdio", ZFCP_DBF_TAG_SIZE) == 0)
zfcp_hba_dbf_view_qdio(&p, &r->u.qdio);
else if (strncmp(r->tag, "berr", ZFCP_DBF_TAG_SIZE) == 0)
zfcp_hba_dbf_view_berr(&p, &r->u.berr);
if (strncmp(r->tag, "resp", ZFCP_DBF_TAG_SIZE) != 0)
p += sprintf(p, "\n");
return p - out_buf;
}
static struct debug_view zfcp_hba_dbf_view = {
"structured",
NULL,
&zfcp_dbf_view_header,
&zfcp_hba_dbf_view_format,
NULL,
NULL
};
static const char *zfcp_rec_dbf_tags[] = {
[ZFCP_REC_DBF_ID_THREAD] = "thread",
[ZFCP_REC_DBF_ID_TARGET] = "target",
[ZFCP_REC_DBF_ID_TRIGGER] = "trigger",
[ZFCP_REC_DBF_ID_ACTION] = "action",
};
static int zfcp_rec_dbf_view_format(debug_info_t *id, struct debug_view *view,
char *buf, const char *_rec)
{
struct zfcp_rec_dbf_record *r = (struct zfcp_rec_dbf_record *)_rec;
char *p = buf;
char hint[ZFCP_DBF_ID_SIZE + 1];
memcpy(hint, r->id2, ZFCP_DBF_ID_SIZE);
hint[ZFCP_DBF_ID_SIZE] = 0;
zfcp_dbf_outs(&p, "tag", zfcp_rec_dbf_tags[r->id]);
zfcp_dbf_outs(&p, "hint", hint);
switch (r->id) {
case ZFCP_REC_DBF_ID_THREAD:
zfcp_dbf_out(&p, "total", "%d", r->u.thread.total);
zfcp_dbf_out(&p, "ready", "%d", r->u.thread.ready);
zfcp_dbf_out(&p, "running", "%d", r->u.thread.running);
break;
case ZFCP_REC_DBF_ID_TARGET:
zfcp_dbf_out(&p, "reference", "0x%016Lx", r->u.target.ref);
zfcp_dbf_out(&p, "status", "0x%08x", r->u.target.status);
zfcp_dbf_out(&p, "erp_count", "%d", r->u.target.erp_count);
zfcp_dbf_out(&p, "d_id", "0x%06x", r->u.target.d_id);
zfcp_dbf_out(&p, "wwpn", "0x%016Lx", r->u.target.wwpn);
zfcp_dbf_out(&p, "fcp_lun", "0x%016Lx", r->u.target.fcp_lun);
break;
case ZFCP_REC_DBF_ID_TRIGGER:
zfcp_dbf_out(&p, "reference", "0x%016Lx", r->u.trigger.ref);
zfcp_dbf_out(&p, "erp_action", "0x%016Lx", r->u.trigger.action);
zfcp_dbf_out(&p, "requested", "%d", r->u.trigger.want);
zfcp_dbf_out(&p, "executed", "%d", r->u.trigger.need);
zfcp_dbf_out(&p, "wwpn", "0x%016Lx", r->u.trigger.wwpn);
zfcp_dbf_out(&p, "fcp_lun", "0x%016Lx", r->u.trigger.fcp_lun);
zfcp_dbf_out(&p, "adapter_status", "0x%08x", r->u.trigger.as);
zfcp_dbf_out(&p, "port_status", "0x%08x", r->u.trigger.ps);
zfcp_dbf_out(&p, "unit_status", "0x%08x", r->u.trigger.us);
break;
case ZFCP_REC_DBF_ID_ACTION:
zfcp_dbf_out(&p, "erp_action", "0x%016Lx", r->u.action.action);
zfcp_dbf_out(&p, "fsf_req", "0x%016Lx", r->u.action.fsf_req);
zfcp_dbf_out(&p, "status", "0x%08Lx", r->u.action.status);
zfcp_dbf_out(&p, "step", "0x%08Lx", r->u.action.step);
break;
}
p += sprintf(p, "\n");
return p - buf;
}
static struct debug_view zfcp_rec_dbf_view = {
"structured",
NULL,
&zfcp_dbf_view_header,
&zfcp_rec_dbf_view_format,
NULL,
NULL
};
/**
* zfcp_rec_dbf_event_thread - trace event related to recovery thread operation
* @id2: identifier for event
* @adapter: adapter
* This function assumes that the caller is holding erp_lock.
*/
void zfcp_rec_dbf_event_thread(char *id2, struct zfcp_adapter *adapter)
{
struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
unsigned long flags = 0;
struct list_head *entry;
unsigned ready = 0, running = 0, total;
list_for_each(entry, &adapter->erp_ready_head)
ready++;
list_for_each(entry, &adapter->erp_running_head)
running++;
total = adapter->erp_total_count;
spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
memset(r, 0, sizeof(*r));
r->id = ZFCP_REC_DBF_ID_THREAD;
memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
r->u.thread.total = total;
r->u.thread.ready = ready;
r->u.thread.running = running;
debug_event(adapter->rec_dbf, 6, r, sizeof(*r));
spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
}
/**
* zfcp_rec_dbf_event_thread - trace event related to recovery thread operation
* @id2: identifier for event
* @adapter: adapter
* This function assumes that the caller does not hold erp_lock.
*/
void zfcp_rec_dbf_event_thread_lock(char *id2, struct zfcp_adapter *adapter)
{
unsigned long flags;
read_lock_irqsave(&adapter->erp_lock, flags);
zfcp_rec_dbf_event_thread(id2, adapter);
read_unlock_irqrestore(&adapter->erp_lock, flags);
}
static void zfcp_rec_dbf_event_target(char *id2, void *ref,
struct zfcp_adapter *adapter,
atomic_t *status, atomic_t *erp_count,
u64 wwpn, u32 d_id, u64 fcp_lun)
{
struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
unsigned long flags;
spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
memset(r, 0, sizeof(*r));
r->id = ZFCP_REC_DBF_ID_TARGET;
memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
r->u.target.ref = (unsigned long)ref;
r->u.target.status = atomic_read(status);
r->u.target.wwpn = wwpn;
r->u.target.d_id = d_id;
r->u.target.fcp_lun = fcp_lun;
r->u.target.erp_count = atomic_read(erp_count);
debug_event(adapter->rec_dbf, 3, r, sizeof(*r));
spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
}
/**
* zfcp_rec_dbf_event_adapter - trace event for adapter state change
* @id: identifier for trigger of state change
* @ref: additional reference (e.g. request)
* @adapter: adapter
*/
void zfcp_rec_dbf_event_adapter(char *id, void *ref,
struct zfcp_adapter *adapter)
{
zfcp_rec_dbf_event_target(id, ref, adapter, &adapter->status,
&adapter->erp_counter, 0, 0, 0);
}
/**
* zfcp_rec_dbf_event_port - trace event for port state change
* @id: identifier for trigger of state change
* @ref: additional reference (e.g. request)
* @port: port
*/
void zfcp_rec_dbf_event_port(char *id, void *ref, struct zfcp_port *port)
{
struct zfcp_adapter *adapter = port->adapter;
zfcp_rec_dbf_event_target(id, ref, adapter, &port->status,
&port->erp_counter, port->wwpn, port->d_id,
0);
}
/**
* zfcp_rec_dbf_event_unit - trace event for unit state change
* @id: identifier for trigger of state change
* @ref: additional reference (e.g. request)
* @unit: unit
*/
void zfcp_rec_dbf_event_unit(char *id, void *ref, struct zfcp_unit *unit)
{
struct zfcp_port *port = unit->port;
struct zfcp_adapter *adapter = port->adapter;
zfcp_rec_dbf_event_target(id, ref, adapter, &unit->status,
&unit->erp_counter, port->wwpn, port->d_id,
unit->fcp_lun);
}
/**
* zfcp_rec_dbf_event_trigger - trace event for triggered error recovery
* @id2: identifier for error recovery trigger
* @ref: additional reference (e.g. request)
* @want: originally requested error recovery action
* @need: error recovery action actually initiated
* @action: address of error recovery action struct
* @adapter: adapter
* @port: port
* @unit: unit
*/
void zfcp_rec_dbf_event_trigger(char *id2, void *ref, u8 want, u8 need,
void *action, struct zfcp_adapter *adapter,
struct zfcp_port *port, struct zfcp_unit *unit)
{
struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
unsigned long flags;
spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
memset(r, 0, sizeof(*r));
r->id = ZFCP_REC_DBF_ID_TRIGGER;
memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
r->u.trigger.ref = (unsigned long)ref;
r->u.trigger.want = want;
r->u.trigger.need = need;
r->u.trigger.action = (unsigned long)action;
r->u.trigger.as = atomic_read(&adapter->status);
if (port) {
r->u.trigger.ps = atomic_read(&port->status);
r->u.trigger.wwpn = port->wwpn;
}
if (unit) {
r->u.trigger.us = atomic_read(&unit->status);
r->u.trigger.fcp_lun = unit->fcp_lun;
}
debug_event(adapter->rec_dbf, action ? 1 : 4, r, sizeof(*r));
spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
}
/**
* zfcp_rec_dbf_event_action - trace event showing progress of recovery action
* @id2: identifier
* @erp_action: error recovery action struct pointer
*/
void zfcp_rec_dbf_event_action(char *id2, struct zfcp_erp_action *erp_action)
{
struct zfcp_adapter *adapter = erp_action->adapter;
struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
unsigned long flags;
spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
memset(r, 0, sizeof(*r));
r->id = ZFCP_REC_DBF_ID_ACTION;
memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
r->u.action.action = (unsigned long)erp_action;
r->u.action.status = erp_action->status;
r->u.action.step = erp_action->step;
r->u.action.fsf_req = (unsigned long)erp_action->fsf_req;
debug_event(adapter->rec_dbf, 5, r, sizeof(*r));
spin_unlock_irqrestore(&adapter->rec_dbf_lock, flags);
}
/**
* zfcp_san_dbf_event_ct_request - trace event for issued CT request
* @fsf_req: request containing issued CT data
*/
void zfcp_san_dbf_event_ct_request(struct zfcp_fsf_req *fsf_req)
{
struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
struct zfcp_wka_port *wka_port = ct->wka_port;
struct zfcp_adapter *adapter = wka_port->adapter;
struct ct_hdr *hdr = sg_virt(ct->req);
struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf;
struct zfcp_san_dbf_record_ct_request *oct = &r->u.ct_req;
int level = 3;
unsigned long flags;
spin_lock_irqsave(&adapter->san_dbf_lock, flags);
memset(r, 0, sizeof(*r));
strncpy(r->tag, "octc", ZFCP_DBF_TAG_SIZE);
r->fsf_reqid = (unsigned long)fsf_req;
r->fsf_seqno = fsf_req->seq_no;
r->s_id = fc_host_port_id(adapter->scsi_host);
r->d_id = wka_port->d_id;
oct->cmd_req_code = hdr->cmd_rsp_code;
oct->revision = hdr->revision;
oct->gs_type = hdr->gs_type;
oct->gs_subtype = hdr->gs_subtype;
oct->options = hdr->options;
oct->max_res_size = hdr->max_res_size;
oct->len = min((int)ct->req->length - (int)sizeof(struct ct_hdr),
ZFCP_DBF_SAN_MAX_PAYLOAD);
debug_event(adapter->san_dbf, level, r, sizeof(*r));
zfcp_dbf_hexdump(adapter->san_dbf, r, sizeof(*r), level,
(void *)hdr + sizeof(struct ct_hdr), oct->len);
spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
}
/**
* zfcp_san_dbf_event_ct_response - trace event for completion of CT request
* @fsf_req: request containing CT response
*/
void zfcp_san_dbf_event_ct_response(struct zfcp_fsf_req *fsf_req)
{
struct zfcp_send_ct *ct = (struct zfcp_send_ct *)fsf_req->data;
struct zfcp_wka_port *wka_port = ct->wka_port;
struct zfcp_adapter *adapter = wka_port->adapter;
struct ct_hdr *hdr = sg_virt(ct->resp);
struct zfcp_san_dbf_record *r = &adapter->san_dbf_buf;
struct zfcp_san_dbf_record_ct_response *rct = &r->u.ct_resp;
int level = 3;
unsigned long flags;
spin_lock_irqsave(&adapter->san_dbf_lock, flags);
memset(r, 0, sizeof(*r));
strncpy(r->tag, "rctc", ZFCP_DBF_TAG_SIZE);
r->fsf_reqid = (unsigned long)fsf_req;
r->fsf_seqno = fsf_req->seq_no;
r->s_id = wka_port->d_id;
r->d_id = fc_host_port_id(adapter->scsi_host);
rct->cmd_rsp_code = hdr->cmd_rsp_code;
rct->revision = hdr->revision;
rct->reason_code = hdr->reason_code;
rct->expl = hdr->reason_code_expl;
rct->vendor_unique = hdr->vendor_unique;
rct->max_res_size = hdr->max_res_size;
rct->len = min((int)ct->resp->length - (int)sizeof(struct ct_hdr),
ZFCP_DBF_SAN_MAX_PAYLOAD);
debug_event(adapter->san_dbf, level, r, sizeof(*r));
zfcp_dbf_hexdump(adapter->san_dbf, r, sizeof(*r), level,
(void *)hdr + sizeof(struct ct_hdr), rct->len);
spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
}
static void zfcp_san_dbf_event_els(const char *tag, int level,
struct zfcp_fsf_req *fsf_req, u32 s_id,
u32 d_id, u8 ls_code, void *buffer,
int buflen)
{
struct zfcp_adapter *adapter = fsf_req->adapter;
struct zfcp_san_dbf_record *rec = &adapter->san_dbf_buf;
unsigned long flags;
spin_lock_irqsave(&adapter->san_dbf_lock, flags);
memset(rec, 0, sizeof(*rec));
strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
rec->fsf_reqid = (unsigned long)fsf_req;
rec->fsf_seqno = fsf_req->seq_no;
rec->s_id = s_id;
rec->d_id = d_id;
rec->u.els.ls_code = ls_code;
debug_event(adapter->san_dbf, level, rec, sizeof(*rec));
zfcp_dbf_hexdump(adapter->san_dbf, rec, sizeof(*rec), level,
buffer, min(buflen, ZFCP_DBF_SAN_MAX_PAYLOAD));
spin_unlock_irqrestore(&adapter->san_dbf_lock, flags);
}
/**
* zfcp_san_dbf_event_els_request - trace event for issued ELS
* @fsf_req: request containing issued ELS
*/
void zfcp_san_dbf_event_els_request(struct zfcp_fsf_req *fsf_req)
{
struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
zfcp_san_dbf_event_els("oels", 2, fsf_req,
fc_host_port_id(els->adapter->scsi_host),
els->d_id, *(u8 *) sg_virt(els->req),
sg_virt(els->req), els->req->length);
}
/**
* zfcp_san_dbf_event_els_response - trace event for completed ELS
* @fsf_req: request containing ELS response
*/
void zfcp_san_dbf_event_els_response(struct zfcp_fsf_req *fsf_req)
{
struct zfcp_send_els *els = (struct zfcp_send_els *)fsf_req->data;
zfcp_san_dbf_event_els("rels", 2, fsf_req, els->d_id,
fc_host_port_id(els->adapter->scsi_host),
*(u8 *)sg_virt(els->req), sg_virt(els->resp),
els->resp->length);
}
/**
* zfcp_san_dbf_event_incoming_els - trace event for incomig ELS
* @fsf_req: request containing unsolicited status buffer with incoming ELS
*/
void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *fsf_req)
{
struct zfcp_adapter *adapter = fsf_req->adapter;
struct fsf_status_read_buffer *buf =
(struct fsf_status_read_buffer *)fsf_req->data;
int length = (int)buf->length -
(int)((void *)&buf->payload - (void *)buf);
zfcp_san_dbf_event_els("iels", 1, fsf_req, buf->d_id,
fc_host_port_id(adapter->scsi_host),
buf->payload.data[0], (void *)buf->payload.data,
length);
}
static int zfcp_san_dbf_view_format(debug_info_t *id, struct debug_view *view,
char *out_buf, const char *in_buf)
{
struct zfcp_san_dbf_record *r = (struct zfcp_san_dbf_record *)in_buf;
char *p = out_buf;
if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
return 0;
zfcp_dbf_tag(&p, "tag", r->tag);
zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno);
zfcp_dbf_out(&p, "s_id", "0x%06x", r->s_id);
zfcp_dbf_out(&p, "d_id", "0x%06x", r->d_id);
if (strncmp(r->tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) {
struct zfcp_san_dbf_record_ct_request *ct = &r->u.ct_req;
zfcp_dbf_out(&p, "cmd_req_code", "0x%04x", ct->cmd_req_code);
zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision);
zfcp_dbf_out(&p, "gs_type", "0x%02x", ct->gs_type);
zfcp_dbf_out(&p, "gs_subtype", "0x%02x", ct->gs_subtype);
zfcp_dbf_out(&p, "options", "0x%02x", ct->options);
zfcp_dbf_out(&p, "max_res_size", "0x%04x", ct->max_res_size);
} else if (strncmp(r->tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) {
struct zfcp_san_dbf_record_ct_response *ct = &r->u.ct_resp;
zfcp_dbf_out(&p, "cmd_rsp_code", "0x%04x", ct->cmd_rsp_code);
zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision);
zfcp_dbf_out(&p, "reason_code", "0x%02x", ct->reason_code);
zfcp_dbf_out(&p, "reason_code_expl", "0x%02x", ct->expl);
zfcp_dbf_out(&p, "vendor_unique", "0x%02x", ct->vendor_unique);
zfcp_dbf_out(&p, "max_res_size", "0x%04x", ct->max_res_size);
} else if (strncmp(r->tag, "oels", ZFCP_DBF_TAG_SIZE) == 0 ||
strncmp(r->tag, "rels", ZFCP_DBF_TAG_SIZE) == 0 ||
strncmp(r->tag, "iels", ZFCP_DBF_TAG_SIZE) == 0) {
struct zfcp_san_dbf_record_els *els = &r->u.els;
zfcp_dbf_out(&p, "ls_code", "0x%02x", els->ls_code);
}
return p - out_buf;
}
static struct debug_view zfcp_san_dbf_view = {
"structured",
NULL,
&zfcp_dbf_view_header,
&zfcp_san_dbf_view_format,
NULL,
NULL
};
static void zfcp_scsi_dbf_event(const char *tag, const char *tag2, int level,
struct zfcp_adapter *adapter,
struct scsi_cmnd *scsi_cmnd,
struct zfcp_fsf_req *fsf_req,
unsigned long old_req_id)
{
struct zfcp_scsi_dbf_record *rec = &adapter->scsi_dbf_buf;
struct zfcp_dbf_dump *dump = (struct zfcp_dbf_dump *)rec;
unsigned long flags;
struct fcp_rsp_iu *fcp_rsp;
char *fcp_rsp_info = NULL, *fcp_sns_info = NULL;
int offset = 0, buflen = 0;
spin_lock_irqsave(&adapter->scsi_dbf_lock, flags);
do {
memset(rec, 0, sizeof(*rec));
if (offset == 0) {
strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE);
strncpy(rec->tag2, tag2, ZFCP_DBF_TAG_SIZE);
if (scsi_cmnd != NULL) {
if (scsi_cmnd->device) {
rec->scsi_id = scsi_cmnd->device->id;
rec->scsi_lun = scsi_cmnd->device->lun;
}
rec->scsi_result = scsi_cmnd->result;
rec->scsi_cmnd = (unsigned long)scsi_cmnd;
rec->scsi_serial = scsi_cmnd->serial_number;
memcpy(rec->scsi_opcode, scsi_cmnd->cmnd,
min((int)scsi_cmnd->cmd_len,
ZFCP_DBF_SCSI_OPCODE));
rec->scsi_retries = scsi_cmnd->retries;
rec->scsi_allowed = scsi_cmnd->allowed;
}
if (fsf_req != NULL) {
fcp_rsp = (struct fcp_rsp_iu *)
&(fsf_req->qtcb->bottom.io.fcp_rsp);
fcp_rsp_info = (unsigned char *) &fcp_rsp[1];
fcp_sns_info =
zfcp_get_fcp_sns_info_ptr(fcp_rsp);
rec->rsp_validity = fcp_rsp->validity.value;
rec->rsp_scsi_status = fcp_rsp->scsi_status;
rec->rsp_resid = fcp_rsp->fcp_resid;
if (fcp_rsp->validity.bits.fcp_rsp_len_valid)
rec->rsp_code = *(fcp_rsp_info + 3);
if (fcp_rsp->validity.bits.fcp_sns_len_valid) {
buflen = min((int)fcp_rsp->fcp_sns_len,
ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO);
rec->sns_info_len = buflen;
memcpy(rec->sns_info, fcp_sns_info,
min(buflen,
ZFCP_DBF_SCSI_FCP_SNS_INFO));
offset += min(buflen,
ZFCP_DBF_SCSI_FCP_SNS_INFO);
}
rec->fsf_reqid = (unsigned long)fsf_req;
rec->fsf_seqno = fsf_req->seq_no;
rec->fsf_issued = fsf_req->issued;
}
rec->old_fsf_reqid = old_req_id;
} else {
strncpy(dump->tag, "dump", ZFCP_DBF_TAG_SIZE);
dump->total_size = buflen;
dump->offset = offset;
dump->size = min(buflen - offset,
(int)sizeof(struct
zfcp_scsi_dbf_record) -
(int)sizeof(struct zfcp_dbf_dump));
memcpy(dump->data, fcp_sns_info + offset, dump->size);
offset += dump->size;
}
debug_event(adapter->scsi_dbf, level, rec, sizeof(*rec));
} while (offset < buflen);
spin_unlock_irqrestore(&adapter->scsi_dbf_lock, flags);
}
/**
* zfcp_scsi_dbf_event_result - trace event for SCSI command completion
* @tag: tag indicating success or failure of SCSI command
* @level: trace level applicable for this event
* @adapter: adapter that has been used to issue the SCSI command
* @scsi_cmnd: SCSI command pointer
* @fsf_req: request used to issue SCSI command (might be NULL)
*/
void zfcp_scsi_dbf_event_result(const char *tag, int level,
struct zfcp_adapter *adapter,
struct scsi_cmnd *scsi_cmnd,
struct zfcp_fsf_req *fsf_req)
{
zfcp_scsi_dbf_event("rslt", tag, level, adapter, scsi_cmnd, fsf_req, 0);
}
/**
* zfcp_scsi_dbf_event_abort - trace event for SCSI command abort
* @tag: tag indicating success or failure of abort operation
* @adapter: adapter thas has been used to issue SCSI command to be aborted
* @scsi_cmnd: SCSI command to be aborted
* @new_fsf_req: request containing abort (might be NULL)
* @old_req_id: identifier of request containg SCSI command to be aborted
*/
void zfcp_scsi_dbf_event_abort(const char *tag, struct zfcp_adapter *adapter,
struct scsi_cmnd *scsi_cmnd,
struct zfcp_fsf_req *new_fsf_req,
unsigned long old_req_id)
{
zfcp_scsi_dbf_event("abrt", tag, 1, adapter, scsi_cmnd, new_fsf_req,
old_req_id);
}
/**
* zfcp_scsi_dbf_event_devreset - trace event for Logical Unit or Target Reset
* @tag: tag indicating success or failure of reset operation
* @flag: indicates type of reset (Target Reset, Logical Unit Reset)
* @unit: unit that needs reset
* @scsi_cmnd: SCSI command which caused this error recovery
*/
void zfcp_scsi_dbf_event_devreset(const char *tag, u8 flag,
struct zfcp_unit *unit,
struct scsi_cmnd *scsi_cmnd)
{
zfcp_scsi_dbf_event(flag == FCP_TARGET_RESET ? "trst" : "lrst", tag, 1,
unit->port->adapter, scsi_cmnd, NULL, 0);
}
static int zfcp_scsi_dbf_view_format(debug_info_t *id, struct debug_view *view,
char *out_buf, const char *in_buf)
{
struct zfcp_scsi_dbf_record *r = (struct zfcp_scsi_dbf_record *)in_buf;
struct timespec t;
char *p = out_buf;
if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0)
return 0;
zfcp_dbf_tag(&p, "tag", r->tag);
zfcp_dbf_tag(&p, "tag2", r->tag2);
zfcp_dbf_out(&p, "scsi_id", "0x%08x", r->scsi_id);
zfcp_dbf_out(&p, "scsi_lun", "0x%08x", r->scsi_lun);
zfcp_dbf_out(&p, "scsi_result", "0x%08x", r->scsi_result);
zfcp_dbf_out(&p, "scsi_cmnd", "0x%0Lx", r->scsi_cmnd);
zfcp_dbf_out(&p, "scsi_serial", "0x%016Lx", r->scsi_serial);
zfcp_dbf_outd(&p, "scsi_opcode", r->scsi_opcode, ZFCP_DBF_SCSI_OPCODE,
0, ZFCP_DBF_SCSI_OPCODE);
zfcp_dbf_out(&p, "scsi_retries", "0x%02x", r->scsi_retries);
zfcp_dbf_out(&p, "scsi_allowed", "0x%02x", r->scsi_allowed);
if (strncmp(r->tag, "abrt", ZFCP_DBF_TAG_SIZE) == 0)
zfcp_dbf_out(&p, "old_fsf_reqid", "0x%0Lx", r->old_fsf_reqid);
zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid);
zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno);
zfcp_dbf_timestamp(r->fsf_issued, &t);
zfcp_dbf_out(&p, "fsf_issued", "%011lu:%06lu", t.tv_sec, t.tv_nsec);
if (strncmp(r->tag, "rslt", ZFCP_DBF_TAG_SIZE) == 0) {
zfcp_dbf_out(&p, "fcp_rsp_validity", "0x%02x", r->rsp_validity);
zfcp_dbf_out(&p, "fcp_rsp_scsi_status", "0x%02x",
r->rsp_scsi_status);
zfcp_dbf_out(&p, "fcp_rsp_resid", "0x%08x", r->rsp_resid);
zfcp_dbf_out(&p, "fcp_rsp_code", "0x%08x", r->rsp_code);
zfcp_dbf_out(&p, "fcp_sns_info_len", "0x%08x", r->sns_info_len);
zfcp_dbf_outd(&p, "fcp_sns_info", r->sns_info,
min((int)r->sns_info_len,
ZFCP_DBF_SCSI_FCP_SNS_INFO), 0,
r->sns_info_len);
}
p += sprintf(p, "\n");
return p - out_buf;
}
static struct debug_view zfcp_scsi_dbf_view = {
"structured",
NULL,
&zfcp_dbf_view_header,
&zfcp_scsi_dbf_view_format,
NULL,
NULL
};
/**
* zfcp_adapter_debug_register - registers debug feature for an adapter
* @adapter: pointer to adapter for which debug features should be registered
* return: -ENOMEM on error, 0 otherwise
*/
int zfcp_adapter_debug_register(struct zfcp_adapter *adapter)
{
char dbf_name[DEBUG_MAX_NAME_LEN];
/* debug feature area which records recovery activity */
sprintf(dbf_name, "zfcp_%s_rec", dev_name(&adapter->ccw_device->dev));
adapter->rec_dbf = debug_register(dbf_name, dbfsize, 1,
sizeof(struct zfcp_rec_dbf_record));
if (!adapter->rec_dbf)
goto failed;
debug_register_view(adapter->rec_dbf, &debug_hex_ascii_view);
debug_register_view(adapter->rec_dbf, &zfcp_rec_dbf_view);
debug_set_level(adapter->rec_dbf, 3);
/* debug feature area which records HBA (FSF and QDIO) conditions */
sprintf(dbf_name, "zfcp_%s_hba", dev_name(&adapter->ccw_device->dev));
adapter->hba_dbf = debug_register(dbf_name, dbfsize, 1,
sizeof(struct zfcp_hba_dbf_record));
if (!adapter->hba_dbf)
goto failed;
debug_register_view(adapter->hba_dbf, &debug_hex_ascii_view);
debug_register_view(adapter->hba_dbf, &zfcp_hba_dbf_view);
debug_set_level(adapter->hba_dbf, 3);
/* debug feature area which records SAN command failures and recovery */
sprintf(dbf_name, "zfcp_%s_san", dev_name(&adapter->ccw_device->dev));
adapter->san_dbf = debug_register(dbf_name, dbfsize, 1,
sizeof(struct zfcp_san_dbf_record));
if (!adapter->san_dbf)
goto failed;
debug_register_view(adapter->san_dbf, &debug_hex_ascii_view);
debug_register_view(adapter->san_dbf, &zfcp_san_dbf_view);
debug_set_level(adapter->san_dbf, 6);
/* debug feature area which records SCSI command failures and recovery */
sprintf(dbf_name, "zfcp_%s_scsi", dev_name(&adapter->ccw_device->dev));
adapter->scsi_dbf = debug_register(dbf_name, dbfsize, 1,
sizeof(struct zfcp_scsi_dbf_record));
if (!adapter->scsi_dbf)
goto failed;
debug_register_view(adapter->scsi_dbf, &debug_hex_ascii_view);
debug_register_view(adapter->scsi_dbf, &zfcp_scsi_dbf_view);
debug_set_level(adapter->scsi_dbf, 3);
return 0;
failed:
zfcp_adapter_debug_unregister(adapter);
return -ENOMEM;
}
/**
* zfcp_adapter_debug_unregister - unregisters debug feature for an adapter
* @adapter: pointer to adapter for which debug features should be unregistered
*/
void zfcp_adapter_debug_unregister(struct zfcp_adapter *adapter)
{
debug_unregister(adapter->scsi_dbf);
debug_unregister(adapter->san_dbf);
debug_unregister(adapter->hba_dbf);
debug_unregister(adapter->rec_dbf);
adapter->scsi_dbf = NULL;
adapter->san_dbf = NULL;
adapter->hba_dbf = NULL;
adapter->rec_dbf = NULL;
}
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