2005-09-13 21:50:38 +02:00
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/*
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2008-06-10 18:20:58 +02:00
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* zfcp device driver
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2005-09-13 21:50:38 +02:00
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*
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2008-06-10 18:20:58 +02:00
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* Debug traces for zfcp.
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2005-09-13 21:50:38 +02:00
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*
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2010-12-02 15:16:15 +01:00
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* Copyright IBM Corporation 2002, 2010
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2005-09-13 21:50:38 +02:00
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*/
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2008-12-25 13:39:53 +01:00
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#define KMSG_COMPONENT "zfcp"
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#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
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2011-07-30 09:25:15 +02:00
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#include <linux/module.h>
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2005-09-13 21:50:38 +02:00
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#include <linux/ctype.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 09:04:11 +01:00
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#include <linux/slab.h>
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2007-10-12 16:11:35 +02:00
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#include <asm/debug.h>
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2009-08-18 15:43:07 +02:00
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#include "zfcp_dbf.h"
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2005-09-13 21:50:38 +02:00
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#include "zfcp_ext.h"
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2009-11-24 16:54:11 +01:00
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#include "zfcp_fc.h"
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2005-09-13 21:50:38 +02:00
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static u32 dbfsize = 4;
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module_param(dbfsize, uint, 0400);
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MODULE_PARM_DESC(dbfsize,
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"number of pages for each debug feature area (default 4)");
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|
2010-12-02 15:16:14 +01:00
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static inline unsigned int zfcp_dbf_plen(unsigned int offset)
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2008-03-27 14:21:55 +01:00
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{
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2010-12-02 15:16:14 +01:00
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return sizeof(struct zfcp_dbf_pay) + offset - ZFCP_DBF_PAY_MAX_REC;
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}
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static inline
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void zfcp_dbf_pl_write(struct zfcp_dbf *dbf, void *data, u16 length, char *area,
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u64 req_id)
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{
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struct zfcp_dbf_pay *pl = &dbf->pay_buf;
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u16 offset = 0, rec_length;
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spin_lock(&dbf->pay_lock);
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memset(pl, 0, sizeof(*pl));
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pl->fsf_req_id = req_id;
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memcpy(pl->area, area, ZFCP_DBF_TAG_LEN);
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while (offset < length) {
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rec_length = min((u16) ZFCP_DBF_PAY_MAX_REC,
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(u16) (length - offset));
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memcpy(pl->data, data + offset, rec_length);
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debug_event(dbf->pay, 1, pl, zfcp_dbf_plen(rec_length));
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offset += rec_length;
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pl->counter++;
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2008-03-27 14:21:55 +01:00
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}
|
2010-12-02 15:16:14 +01:00
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spin_unlock(&dbf->pay_lock);
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2008-03-27 14:21:55 +01:00
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}
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2010-12-02 15:16:14 +01:00
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/**
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* zfcp_dbf_hba_fsf_res - trace event for fsf responses
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* @tag: tag indicating which kind of unsolicited status has been received
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* @req: request for which a response was received
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*/
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void zfcp_dbf_hba_fsf_res(char *tag, struct zfcp_fsf_req *req)
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2005-09-13 21:50:38 +02:00
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{
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2010-12-02 15:16:14 +01:00
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struct zfcp_dbf *dbf = req->adapter->dbf;
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struct fsf_qtcb_prefix *q_pref = &req->qtcb->prefix;
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struct fsf_qtcb_header *q_head = &req->qtcb->header;
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struct zfcp_dbf_hba *rec = &dbf->hba_buf;
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2005-09-13 21:50:38 +02:00
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unsigned long flags;
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2009-08-18 15:43:21 +02:00
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spin_lock_irqsave(&dbf->hba_lock, flags);
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2008-03-31 11:15:29 +02:00
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memset(rec, 0, sizeof(*rec));
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2005-09-13 21:50:38 +02:00
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2010-12-02 15:16:14 +01:00
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memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
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rec->id = ZFCP_DBF_HBA_RES;
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rec->fsf_req_id = req->req_id;
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rec->fsf_req_status = req->status;
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rec->fsf_cmd = req->fsf_command;
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rec->fsf_seq_no = req->seq_no;
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rec->u.res.req_issued = req->issued;
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rec->u.res.prot_status = q_pref->prot_status;
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rec->u.res.fsf_status = q_head->fsf_status;
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memcpy(rec->u.res.prot_status_qual, &q_pref->prot_status_qual,
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FSF_PROT_STATUS_QUAL_SIZE);
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memcpy(rec->u.res.fsf_status_qual, &q_head->fsf_status_qual,
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FSF_STATUS_QUALIFIER_SIZE);
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if (req->fsf_command != FSF_QTCB_FCP_CMND) {
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rec->pl_len = q_head->log_length;
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zfcp_dbf_pl_write(dbf, (char *)q_pref + q_head->log_start,
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rec->pl_len, "fsf_res", req->req_id);
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2005-09-13 21:50:38 +02:00
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}
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2010-12-02 15:16:14 +01:00
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debug_event(dbf->hba, 1, rec, sizeof(*rec));
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2009-08-18 15:43:21 +02:00
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spin_unlock_irqrestore(&dbf->hba_lock, flags);
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2005-09-13 21:50:38 +02:00
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}
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2008-03-31 11:15:31 +02:00
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/**
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2010-12-02 15:16:14 +01:00
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* zfcp_dbf_hba_fsf_uss - trace event for an unsolicited status buffer
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* @tag: tag indicating which kind of unsolicited status has been received
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* @req: request providing the unsolicited status
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2008-03-31 11:15:31 +02:00
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*/
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2010-12-02 15:16:14 +01:00
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void zfcp_dbf_hba_fsf_uss(char *tag, struct zfcp_fsf_req *req)
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2005-09-13 21:50:38 +02:00
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{
|
2010-12-02 15:16:14 +01:00
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struct zfcp_dbf *dbf = req->adapter->dbf;
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struct fsf_status_read_buffer *srb = req->data;
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struct zfcp_dbf_hba *rec = &dbf->hba_buf;
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2005-09-13 21:50:38 +02:00
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unsigned long flags;
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2009-08-18 15:43:21 +02:00
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spin_lock_irqsave(&dbf->hba_lock, flags);
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2010-12-02 15:16:14 +01:00
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memset(rec, 0, sizeof(*rec));
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memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
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rec->id = ZFCP_DBF_HBA_USS;
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rec->fsf_req_id = req->req_id;
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rec->fsf_req_status = req->status;
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rec->fsf_cmd = req->fsf_command;
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if (!srb)
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goto log;
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rec->u.uss.status_type = srb->status_type;
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rec->u.uss.status_subtype = srb->status_subtype;
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rec->u.uss.d_id = ntoh24(srb->d_id);
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rec->u.uss.lun = srb->fcp_lun;
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memcpy(&rec->u.uss.queue_designator, &srb->queue_designator,
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sizeof(rec->u.uss.queue_designator));
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/* status read buffer payload length */
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rec->pl_len = (!srb->length) ? 0 : srb->length -
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offsetof(struct fsf_status_read_buffer, payload);
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if (rec->pl_len)
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zfcp_dbf_pl_write(dbf, srb->payload.data, rec->pl_len,
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"fsf_uss", req->req_id);
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log:
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debug_event(dbf->hba, 2, rec, sizeof(*rec));
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2009-08-18 15:43:21 +02:00
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spin_unlock_irqrestore(&dbf->hba_lock, flags);
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2005-09-13 21:50:38 +02:00
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}
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2008-10-01 12:42:21 +02:00
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/**
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2010-12-02 15:16:14 +01:00
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* zfcp_dbf_hba_bit_err - trace event for bit error conditions
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* @tag: tag indicating which kind of unsolicited status has been received
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* @req: request which caused the bit_error condition
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2008-10-01 12:42:21 +02:00
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*/
|
2010-12-02 15:16:14 +01:00
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void zfcp_dbf_hba_bit_err(char *tag, struct zfcp_fsf_req *req)
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2008-10-01 12:42:21 +02:00
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{
|
2010-12-02 15:16:14 +01:00
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struct zfcp_dbf *dbf = req->adapter->dbf;
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struct zfcp_dbf_hba *rec = &dbf->hba_buf;
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2008-10-01 12:42:21 +02:00
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struct fsf_status_read_buffer *sr_buf = req->data;
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unsigned long flags;
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|
2009-08-18 15:43:21 +02:00
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spin_lock_irqsave(&dbf->hba_lock, flags);
|
2010-12-02 15:16:14 +01:00
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memset(rec, 0, sizeof(*rec));
|
2005-09-13 21:50:38 +02:00
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2010-12-02 15:16:14 +01:00
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memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
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rec->id = ZFCP_DBF_HBA_BIT;
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rec->fsf_req_id = req->req_id;
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rec->fsf_req_status = req->status;
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rec->fsf_cmd = req->fsf_command;
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memcpy(&rec->u.be, &sr_buf->payload.bit_error,
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sizeof(struct fsf_bit_error_payload));
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debug_event(dbf->hba, 1, rec, sizeof(*rec));
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spin_unlock_irqrestore(&dbf->hba_lock, flags);
|
2005-09-13 21:50:38 +02:00
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}
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|
2011-08-15 14:40:32 +02:00
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/**
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* zfcp_dbf_hba_def_err - trace event for deferred error messages
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* @adapter: pointer to struct zfcp_adapter
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* @req_id: request id which caused the deferred error message
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* @scount: number of sbals incl. the signaling sbal
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* @pl: array of all involved sbals
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*/
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void zfcp_dbf_hba_def_err(struct zfcp_adapter *adapter, u64 req_id, u16 scount,
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void **pl)
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{
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struct zfcp_dbf *dbf = adapter->dbf;
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struct zfcp_dbf_pay *payload = &dbf->pay_buf;
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unsigned long flags;
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u16 length;
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if (!pl)
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return;
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spin_lock_irqsave(&dbf->pay_lock, flags);
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|
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memset(payload, 0, sizeof(*payload));
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memcpy(payload->area, "def_err", 7);
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payload->fsf_req_id = req_id;
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payload->counter = 0;
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length = min((u16)sizeof(struct qdio_buffer),
|
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(u16)ZFCP_DBF_PAY_MAX_REC);
|
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|
|
|
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|
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while ((char *)pl[payload->counter] && payload->counter < scount) {
|
|
|
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memcpy(payload->data, (char *)pl[payload->counter], length);
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|
|
debug_event(dbf->pay, 1, payload, zfcp_dbf_plen(length));
|
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|
payload->counter++;
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|
|
}
|
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|
|
|
|
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spin_unlock_irqrestore(&dbf->pay_lock, flags);
|
|
|
|
}
|
|
|
|
|
2010-12-02 15:16:12 +01:00
|
|
|
static void zfcp_dbf_set_common(struct zfcp_dbf_rec *rec,
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|
|
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struct zfcp_adapter *adapter,
|
|
|
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struct zfcp_port *port,
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|
|
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struct scsi_device *sdev)
|
2008-03-27 14:22:00 +01:00
|
|
|
{
|
2010-12-02 15:16:12 +01:00
|
|
|
rec->adapter_status = atomic_read(&adapter->status);
|
|
|
|
if (port) {
|
|
|
|
rec->port_status = atomic_read(&port->status);
|
|
|
|
rec->wwpn = port->wwpn;
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|
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rec->d_id = port->d_id;
|
|
|
|
}
|
|
|
|
if (sdev) {
|
|
|
|
rec->lun_status = atomic_read(&sdev_to_zfcp(sdev)->status);
|
|
|
|
rec->lun = zfcp_scsi_dev_lun(sdev);
|
2008-03-27 14:22:00 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2008-03-27 14:22:01 +01:00
|
|
|
/**
|
2010-12-02 15:16:12 +01:00
|
|
|
* zfcp_dbf_rec_trig - trace event related to triggered recovery
|
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|
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* @tag: identifier for event
|
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|
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* @adapter: adapter on which the erp_action should run
|
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* @port: remote port involved in the erp_action
|
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|
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* @sdev: scsi device involved in the erp_action
|
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* @want: wanted erp_action
|
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* @need: required erp_action
|
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|
*
|
|
|
|
* The adapter->erp_lock has to be held.
|
2008-03-27 14:22:01 +01:00
|
|
|
*/
|
2010-12-02 15:16:12 +01:00
|
|
|
void zfcp_dbf_rec_trig(char *tag, struct zfcp_adapter *adapter,
|
|
|
|
struct zfcp_port *port, struct scsi_device *sdev,
|
|
|
|
u8 want, u8 need)
|
2008-03-27 14:22:01 +01:00
|
|
|
{
|
2010-12-02 15:16:12 +01:00
|
|
|
struct zfcp_dbf *dbf = adapter->dbf;
|
|
|
|
struct zfcp_dbf_rec *rec = &dbf->rec_buf;
|
2008-03-27 14:22:01 +01:00
|
|
|
struct list_head *entry;
|
2008-03-27 14:22:02 +01:00
|
|
|
unsigned long flags;
|
|
|
|
|
2009-08-18 15:43:21 +02:00
|
|
|
spin_lock_irqsave(&dbf->rec_lock, flags);
|
2010-12-02 15:16:12 +01:00
|
|
|
memset(rec, 0, sizeof(*rec));
|
2009-08-18 15:43:21 +02:00
|
|
|
|
2010-12-02 15:16:12 +01:00
|
|
|
rec->id = ZFCP_DBF_REC_TRIG;
|
|
|
|
memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
|
|
|
|
zfcp_dbf_set_common(rec, adapter, port, sdev);
|
2008-03-27 14:22:02 +01:00
|
|
|
|
2010-12-02 15:16:12 +01:00
|
|
|
list_for_each(entry, &adapter->erp_ready_head)
|
|
|
|
rec->u.trig.ready++;
|
2008-03-27 14:22:02 +01:00
|
|
|
|
2010-12-02 15:16:12 +01:00
|
|
|
list_for_each(entry, &adapter->erp_running_head)
|
|
|
|
rec->u.trig.running++;
|
2008-03-27 14:22:02 +01:00
|
|
|
|
2010-12-02 15:16:12 +01:00
|
|
|
rec->u.trig.want = want;
|
|
|
|
rec->u.trig.need = need;
|
2008-03-27 14:22:02 +01:00
|
|
|
|
2010-12-02 15:16:12 +01:00
|
|
|
debug_event(dbf->rec, 1, rec, sizeof(*rec));
|
|
|
|
spin_unlock_irqrestore(&dbf->rec_lock, flags);
|
2008-03-27 14:22:02 +01:00
|
|
|
}
|
|
|
|
|
2010-12-02 15:16:12 +01:00
|
|
|
|
2008-03-27 14:22:03 +01:00
|
|
|
/**
|
2010-12-02 15:16:12 +01:00
|
|
|
* zfcp_dbf_rec_run - trace event related to running recovery
|
|
|
|
* @tag: identifier for event
|
|
|
|
* @erp: erp_action running
|
2008-03-27 14:22:03 +01:00
|
|
|
*/
|
2010-12-02 15:16:12 +01:00
|
|
|
void zfcp_dbf_rec_run(char *tag, struct zfcp_erp_action *erp)
|
2008-03-27 14:22:03 +01:00
|
|
|
{
|
2010-12-02 15:16:12 +01:00
|
|
|
struct zfcp_dbf *dbf = erp->adapter->dbf;
|
|
|
|
struct zfcp_dbf_rec *rec = &dbf->rec_buf;
|
2008-03-27 14:22:03 +01:00
|
|
|
unsigned long flags;
|
|
|
|
|
2009-08-18 15:43:21 +02:00
|
|
|
spin_lock_irqsave(&dbf->rec_lock, flags);
|
2010-12-02 15:16:12 +01:00
|
|
|
memset(rec, 0, sizeof(*rec));
|
2008-03-27 14:22:03 +01:00
|
|
|
|
2010-12-02 15:16:12 +01:00
|
|
|
rec->id = ZFCP_DBF_REC_RUN;
|
|
|
|
memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
|
|
|
|
zfcp_dbf_set_common(rec, erp->adapter, erp->port, erp->sdev);
|
2008-03-27 14:22:04 +01:00
|
|
|
|
2010-12-02 15:16:12 +01:00
|
|
|
rec->u.run.fsf_req_id = erp->fsf_req_id;
|
|
|
|
rec->u.run.rec_status = erp->status;
|
|
|
|
rec->u.run.rec_step = erp->step;
|
|
|
|
rec->u.run.rec_action = erp->action;
|
|
|
|
|
|
|
|
if (erp->sdev)
|
|
|
|
rec->u.run.rec_count =
|
|
|
|
atomic_read(&sdev_to_zfcp(erp->sdev)->erp_counter);
|
|
|
|
else if (erp->port)
|
|
|
|
rec->u.run.rec_count = atomic_read(&erp->port->erp_counter);
|
|
|
|
else
|
|
|
|
rec->u.run.rec_count = atomic_read(&erp->adapter->erp_counter);
|
|
|
|
|
|
|
|
debug_event(dbf->rec, 1, rec, sizeof(*rec));
|
2009-08-18 15:43:21 +02:00
|
|
|
spin_unlock_irqrestore(&dbf->rec_lock, flags);
|
2008-03-27 14:22:04 +01:00
|
|
|
}
|
|
|
|
|
2010-12-02 15:16:13 +01:00
|
|
|
static inline
|
|
|
|
void zfcp_dbf_san(char *tag, struct zfcp_dbf *dbf, void *data, u8 id, u16 len,
|
|
|
|
u64 req_id, u32 d_id)
|
2005-09-13 21:50:38 +02:00
|
|
|
{
|
2010-12-02 15:16:13 +01:00
|
|
|
struct zfcp_dbf_san *rec = &dbf->san_buf;
|
|
|
|
u16 rec_len;
|
2008-03-31 11:15:29 +02:00
|
|
|
unsigned long flags;
|
2005-09-13 21:50:38 +02:00
|
|
|
|
2009-08-18 15:43:21 +02:00
|
|
|
spin_lock_irqsave(&dbf->san_lock, flags);
|
2010-12-02 15:16:13 +01:00
|
|
|
memset(rec, 0, sizeof(*rec));
|
2005-09-13 21:50:38 +02:00
|
|
|
|
2010-12-02 15:16:13 +01:00
|
|
|
rec->id = id;
|
|
|
|
rec->fsf_req_id = req_id;
|
|
|
|
rec->d_id = d_id;
|
|
|
|
rec_len = min(len, (u16)ZFCP_DBF_SAN_MAX_PAYLOAD);
|
|
|
|
memcpy(rec->payload, data, rec_len);
|
|
|
|
memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
|
2005-09-13 21:50:38 +02:00
|
|
|
|
2010-12-02 15:16:13 +01:00
|
|
|
debug_event(dbf->san, 1, rec, sizeof(*rec));
|
2009-08-18 15:43:21 +02:00
|
|
|
spin_unlock_irqrestore(&dbf->san_lock, flags);
|
2005-09-13 21:50:38 +02:00
|
|
|
}
|
|
|
|
|
2008-03-31 11:15:31 +02:00
|
|
|
/**
|
2010-12-02 15:16:13 +01:00
|
|
|
* zfcp_dbf_san_req - trace event for issued SAN request
|
|
|
|
* @tag: indentifier for event
|
|
|
|
* @fsf_req: request containing issued CT data
|
|
|
|
* d_id: destination ID
|
2008-03-31 11:15:31 +02:00
|
|
|
*/
|
2010-12-02 15:16:13 +01:00
|
|
|
void zfcp_dbf_san_req(char *tag, struct zfcp_fsf_req *fsf, u32 d_id)
|
2005-09-13 21:50:38 +02:00
|
|
|
{
|
2010-12-02 15:16:13 +01:00
|
|
|
struct zfcp_dbf *dbf = fsf->adapter->dbf;
|
|
|
|
struct zfcp_fsf_ct_els *ct_els = fsf->data;
|
|
|
|
u16 length;
|
2005-09-13 21:50:38 +02:00
|
|
|
|
2010-12-02 15:16:13 +01:00
|
|
|
length = (u16)(ct_els->req->length + FC_CT_HDR_LEN);
|
|
|
|
zfcp_dbf_san(tag, dbf, sg_virt(ct_els->req), ZFCP_DBF_SAN_REQ, length,
|
|
|
|
fsf->req_id, d_id);
|
2005-09-13 21:50:38 +02:00
|
|
|
}
|
|
|
|
|
2008-03-31 11:15:31 +02:00
|
|
|
/**
|
2010-12-02 15:16:13 +01:00
|
|
|
* zfcp_dbf_san_res - trace event for received SAN request
|
|
|
|
* @tag: indentifier for event
|
|
|
|
* @fsf_req: request containing issued CT data
|
2008-03-31 11:15:31 +02:00
|
|
|
*/
|
2010-12-02 15:16:13 +01:00
|
|
|
void zfcp_dbf_san_res(char *tag, struct zfcp_fsf_req *fsf)
|
2005-09-13 21:50:38 +02:00
|
|
|
{
|
2010-12-02 15:16:13 +01:00
|
|
|
struct zfcp_dbf *dbf = fsf->adapter->dbf;
|
|
|
|
struct zfcp_fsf_ct_els *ct_els = fsf->data;
|
|
|
|
u16 length;
|
2005-09-13 21:50:38 +02:00
|
|
|
|
2010-12-02 15:16:13 +01:00
|
|
|
length = (u16)(ct_els->resp->length + FC_CT_HDR_LEN);
|
|
|
|
zfcp_dbf_san(tag, dbf, sg_virt(ct_els->resp), ZFCP_DBF_SAN_RES, length,
|
|
|
|
fsf->req_id, 0);
|
2005-09-13 21:50:38 +02:00
|
|
|
}
|
|
|
|
|
2008-03-31 11:15:31 +02:00
|
|
|
/**
|
2010-12-02 15:16:13 +01:00
|
|
|
* zfcp_dbf_san_in_els - trace event for incoming ELS
|
|
|
|
* @tag: indentifier for event
|
|
|
|
* @fsf_req: request containing issued CT data
|
2008-03-31 11:15:31 +02:00
|
|
|
*/
|
2010-12-02 15:16:13 +01:00
|
|
|
void zfcp_dbf_san_in_els(char *tag, struct zfcp_fsf_req *fsf)
|
2005-09-13 21:50:38 +02:00
|
|
|
{
|
2010-12-02 15:16:13 +01:00
|
|
|
struct zfcp_dbf *dbf = fsf->adapter->dbf;
|
|
|
|
struct fsf_status_read_buffer *srb =
|
|
|
|
(struct fsf_status_read_buffer *) fsf->data;
|
|
|
|
u16 length;
|
|
|
|
|
|
|
|
length = (u16)(srb->length -
|
|
|
|
offsetof(struct fsf_status_read_buffer, payload));
|
|
|
|
zfcp_dbf_san(tag, dbf, srb->payload.data, ZFCP_DBF_SAN_ELS, length,
|
|
|
|
fsf->req_id, ntoh24(srb->d_id));
|
2005-09-13 21:50:38 +02:00
|
|
|
}
|
|
|
|
|
2010-12-02 15:16:15 +01:00
|
|
|
/**
|
|
|
|
* zfcp_dbf_scsi - trace event for scsi commands
|
|
|
|
* @tag: identifier for event
|
|
|
|
* @sc: pointer to struct scsi_cmnd
|
|
|
|
* @fsf: pointer to struct zfcp_fsf_req
|
|
|
|
*/
|
|
|
|
void zfcp_dbf_scsi(char *tag, struct scsi_cmnd *sc, struct zfcp_fsf_req *fsf)
|
2005-09-13 21:50:38 +02:00
|
|
|
{
|
2010-12-02 15:16:15 +01:00
|
|
|
struct zfcp_adapter *adapter =
|
|
|
|
(struct zfcp_adapter *) sc->device->host->hostdata[0];
|
|
|
|
struct zfcp_dbf *dbf = adapter->dbf;
|
|
|
|
struct zfcp_dbf_scsi *rec = &dbf->scsi_buf;
|
2009-11-24 16:54:08 +01:00
|
|
|
struct fcp_resp_with_ext *fcp_rsp;
|
2010-12-02 15:16:15 +01:00
|
|
|
struct fcp_resp_rsp_info *fcp_rsp_info;
|
|
|
|
unsigned long flags;
|
2005-09-13 21:50:38 +02:00
|
|
|
|
2009-08-18 15:43:21 +02:00
|
|
|
spin_lock_irqsave(&dbf->scsi_lock, flags);
|
2010-12-02 15:16:15 +01:00
|
|
|
memset(rec, 0, sizeof(*rec));
|
2005-09-13 21:50:38 +02:00
|
|
|
|
2010-12-02 15:16:15 +01:00
|
|
|
memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
|
|
|
|
rec->id = ZFCP_DBF_SCSI_CMND;
|
|
|
|
rec->scsi_result = sc->result;
|
|
|
|
rec->scsi_retries = sc->retries;
|
|
|
|
rec->scsi_allowed = sc->allowed;
|
|
|
|
rec->scsi_id = sc->device->id;
|
|
|
|
rec->scsi_lun = sc->device->lun;
|
|
|
|
rec->host_scribble = (unsigned long)sc->host_scribble;
|
|
|
|
|
|
|
|
memcpy(rec->scsi_opcode, sc->cmnd,
|
|
|
|
min((int)sc->cmd_len, ZFCP_DBF_SCSI_OPCODE));
|
|
|
|
|
|
|
|
if (fsf) {
|
|
|
|
rec->fsf_req_id = fsf->req_id;
|
|
|
|
fcp_rsp = (struct fcp_resp_with_ext *)
|
|
|
|
&(fsf->qtcb->bottom.io.fcp_rsp);
|
|
|
|
memcpy(&rec->fcp_rsp, fcp_rsp, FCP_RESP_WITH_EXT);
|
|
|
|
if (fcp_rsp->resp.fr_flags & FCP_RSP_LEN_VAL) {
|
|
|
|
fcp_rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
|
|
|
|
rec->fcp_rsp_info = fcp_rsp_info->rsp_code;
|
|
|
|
}
|
|
|
|
if (fcp_rsp->resp.fr_flags & FCP_SNS_LEN_VAL) {
|
|
|
|
rec->pl_len = min((u16)SCSI_SENSE_BUFFERSIZE,
|
|
|
|
(u16)ZFCP_DBF_PAY_MAX_REC);
|
|
|
|
zfcp_dbf_pl_write(dbf, sc->sense_buffer, rec->pl_len,
|
|
|
|
"fcp_sns", fsf->req_id);
|
|
|
|
}
|
2005-09-13 21:50:38 +02:00
|
|
|
}
|
|
|
|
|
2010-12-02 15:16:16 +01:00
|
|
|
debug_event(dbf->scsi, 1, rec, sizeof(*rec));
|
2010-12-02 15:16:15 +01:00
|
|
|
spin_unlock_irqrestore(&dbf->scsi_lock, flags);
|
|
|
|
}
|
2005-09-13 21:50:38 +02:00
|
|
|
|
2010-12-02 15:16:16 +01:00
|
|
|
static debug_info_t *zfcp_dbf_reg(const char *name, int size, int rec_size)
|
2009-08-18 15:43:07 +02:00
|
|
|
{
|
|
|
|
struct debug_info *d;
|
|
|
|
|
2010-12-02 15:16:16 +01:00
|
|
|
d = debug_register(name, size, 1, rec_size);
|
2009-08-18 15:43:07 +02:00
|
|
|
if (!d)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
debug_register_view(d, &debug_hex_ascii_view);
|
2010-12-02 15:16:16 +01:00
|
|
|
debug_set_level(d, 3);
|
2009-08-18 15:43:07 +02:00
|
|
|
|
|
|
|
return d;
|
|
|
|
}
|
|
|
|
|
2010-12-02 15:16:16 +01:00
|
|
|
static void zfcp_dbf_unregister(struct zfcp_dbf *dbf)
|
|
|
|
{
|
|
|
|
if (!dbf)
|
|
|
|
return;
|
|
|
|
|
|
|
|
debug_unregister(dbf->scsi);
|
|
|
|
debug_unregister(dbf->san);
|
|
|
|
debug_unregister(dbf->hba);
|
|
|
|
debug_unregister(dbf->pay);
|
|
|
|
debug_unregister(dbf->rec);
|
|
|
|
kfree(dbf);
|
|
|
|
}
|
|
|
|
|
2005-09-13 21:50:38 +02:00
|
|
|
/**
|
|
|
|
* 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
|
|
|
|
*/
|
2009-08-18 15:43:21 +02:00
|
|
|
int zfcp_dbf_adapter_register(struct zfcp_adapter *adapter)
|
2005-09-13 21:50:38 +02:00
|
|
|
{
|
2010-12-02 15:16:16 +01:00
|
|
|
char name[DEBUG_MAX_NAME_LEN];
|
2009-08-18 15:43:07 +02:00
|
|
|
struct zfcp_dbf *dbf;
|
|
|
|
|
2010-07-16 15:37:40 +02:00
|
|
|
dbf = kzalloc(sizeof(struct zfcp_dbf), GFP_KERNEL);
|
2009-08-18 15:43:07 +02:00
|
|
|
if (!dbf)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2010-12-02 15:16:14 +01:00
|
|
|
spin_lock_init(&dbf->pay_lock);
|
2009-08-18 15:43:21 +02:00
|
|
|
spin_lock_init(&dbf->hba_lock);
|
|
|
|
spin_lock_init(&dbf->san_lock);
|
|
|
|
spin_lock_init(&dbf->scsi_lock);
|
|
|
|
spin_lock_init(&dbf->rec_lock);
|
2005-09-13 21:50:38 +02:00
|
|
|
|
2008-03-27 14:22:00 +01:00
|
|
|
/* debug feature area which records recovery activity */
|
2010-12-02 15:16:16 +01:00
|
|
|
sprintf(name, "zfcp_%s_rec", dev_name(&adapter->ccw_device->dev));
|
|
|
|
dbf->rec = zfcp_dbf_reg(name, dbfsize, sizeof(struct zfcp_dbf_rec));
|
2009-08-18 15:43:21 +02:00
|
|
|
if (!dbf->rec)
|
|
|
|
goto err_out;
|
2008-03-27 14:22:00 +01:00
|
|
|
|
2005-09-13 21:50:38 +02:00
|
|
|
/* debug feature area which records HBA (FSF and QDIO) conditions */
|
2010-12-02 15:16:16 +01:00
|
|
|
sprintf(name, "zfcp_%s_hba", dev_name(&adapter->ccw_device->dev));
|
|
|
|
dbf->hba = zfcp_dbf_reg(name, dbfsize, sizeof(struct zfcp_dbf_hba));
|
2009-08-18 15:43:21 +02:00
|
|
|
if (!dbf->hba)
|
|
|
|
goto err_out;
|
2005-09-13 21:50:38 +02:00
|
|
|
|
2010-12-02 15:16:14 +01:00
|
|
|
/* debug feature area which records payload info */
|
2010-12-02 15:16:16 +01:00
|
|
|
sprintf(name, "zfcp_%s_pay", dev_name(&adapter->ccw_device->dev));
|
|
|
|
dbf->pay = zfcp_dbf_reg(name, dbfsize * 2, sizeof(struct zfcp_dbf_pay));
|
2010-12-02 15:16:14 +01:00
|
|
|
if (!dbf->pay)
|
|
|
|
goto err_out;
|
|
|
|
|
2005-09-13 21:50:38 +02:00
|
|
|
/* debug feature area which records SAN command failures and recovery */
|
2010-12-02 15:16:16 +01:00
|
|
|
sprintf(name, "zfcp_%s_san", dev_name(&adapter->ccw_device->dev));
|
|
|
|
dbf->san = zfcp_dbf_reg(name, dbfsize, sizeof(struct zfcp_dbf_san));
|
2009-08-18 15:43:21 +02:00
|
|
|
if (!dbf->san)
|
|
|
|
goto err_out;
|
2005-09-13 21:50:38 +02:00
|
|
|
|
|
|
|
/* debug feature area which records SCSI command failures and recovery */
|
2010-12-02 15:16:16 +01:00
|
|
|
sprintf(name, "zfcp_%s_scsi", dev_name(&adapter->ccw_device->dev));
|
|
|
|
dbf->scsi = zfcp_dbf_reg(name, dbfsize, sizeof(struct zfcp_dbf_scsi));
|
2009-08-18 15:43:21 +02:00
|
|
|
if (!dbf->scsi)
|
|
|
|
goto err_out;
|
2005-09-13 21:50:38 +02:00
|
|
|
|
2009-08-18 15:43:07 +02:00
|
|
|
adapter->dbf = dbf;
|
2005-09-13 21:50:38 +02:00
|
|
|
|
2010-12-02 15:16:16 +01:00
|
|
|
return 0;
|
2009-08-18 15:43:21 +02:00
|
|
|
err_out:
|
2010-12-02 15:16:16 +01:00
|
|
|
zfcp_dbf_unregister(dbf);
|
2005-09-13 21:50:38 +02:00
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* zfcp_adapter_debug_unregister - unregisters debug feature for an adapter
|
2010-12-02 15:16:16 +01:00
|
|
|
* @adapter: pointer to adapter for which debug features should be unregistered
|
2005-09-13 21:50:38 +02:00
|
|
|
*/
|
2010-12-02 15:16:16 +01:00
|
|
|
void zfcp_dbf_adapter_unregister(struct zfcp_adapter *adapter)
|
2005-09-13 21:50:38 +02:00
|
|
|
{
|
2010-12-02 15:16:16 +01:00
|
|
|
struct zfcp_dbf *dbf = adapter->dbf;
|
|
|
|
|
|
|
|
adapter->dbf = NULL;
|
|
|
|
zfcp_dbf_unregister(dbf);
|
2005-09-13 21:50:38 +02:00
|
|
|
}
|
2009-08-18 15:43:21 +02:00
|
|
|
|