struct zfcp_dbf_scsi_record *rec = &dbf->scsi_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;
+ struct fcp_resp_with_ext *fcp_rsp;
+ struct fcp_resp_rsp_info *fcp_rsp_info = NULL;
+ char *fcp_sns_info = NULL;
int offset = 0, buflen = 0;
spin_lock_irqsave(&dbf->scsi_lock, flags);
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);
+ fcp_rsp = (struct fcp_resp_with_ext *)
+ &(fsf_req->qtcb->bottom.io.fcp_rsp);
+ fcp_rsp_info = (struct fcp_resp_rsp_info *)
+ &fcp_rsp[1];
+ fcp_sns_info = (char *) &fcp_rsp[1];
+ if (fcp_rsp->resp.fr_flags & FCP_RSP_LEN_VAL)
+ fcp_sns_info += fcp_rsp->ext.fr_sns_len;
+
+ rec->rsp_validity = fcp_rsp->resp.fr_flags;
+ rec->rsp_scsi_status = fcp_rsp->resp.fr_status;
+ rec->rsp_resid = fcp_rsp->ext.fr_resid;
+ if (fcp_rsp->resp.fr_flags & FCP_RSP_LEN_VAL)
+ rec->rsp_code = fcp_rsp_info->rsp_code;
+ if (fcp_rsp->resp.fr_flags & FCP_SNS_LEN_VAL) {
+ buflen = min(fcp_rsp->ext.fr_sns_len,
+ (u32)ZFCP_DBF_SCSI_MAX_FCP_SNS_INFO);
rec->sns_info_len = buflen;
memcpy(rec->sns_info, fcp_sns_info,
min(buflen,
#ifndef ZFCP_DBF_H
#define ZFCP_DBF_H
+#include <scsi/fc/fc_fcp.h>
#include "zfcp_ext.h"
#include "zfcp_fsf.h"
#include "zfcp_def.h"
void zfcp_dbf_scsi_devreset(const char *tag, u8 flag, struct zfcp_unit *unit,
struct scsi_cmnd *scsi_cmnd)
{
- zfcp_dbf_scsi(flag == FCP_TARGET_RESET ? "trst" : "lrst", tag, 1,
+ zfcp_dbf_scsi(flag == FCP_TMF_TGT_RESET ? "trst" : "lrst", tag, 1,
unit->port->adapter->dbf, scsi_cmnd, NULL, 0);
}
/*************** FIBRE CHANNEL PROTOCOL SPECIFIC DEFINES ********************/
-/* task attribute values in FCP-2 FCP_CMND IU */
-#define SIMPLE_Q 0
-#define HEAD_OF_Q 1
-#define ORDERED_Q 2
-#define ACA_Q 4
-#define UNTAGGED 5
-
-/* task management flags in FCP-2 FCP_CMND IU */
-#define FCP_CLEAR_ACA 0x40
-#define FCP_TARGET_RESET 0x20
-#define FCP_LOGICAL_UNIT_RESET 0x10
-#define FCP_CLEAR_TASK_SET 0x04
-#define FCP_ABORT_TASK_SET 0x02
-
-#define FCP_CDB_LENGTH 16
-
#define ZFCP_DID_MASK 0x00FFFFFF
-/* FCP(-2) FCP_CMND IU */
-struct fcp_cmnd_iu {
- u64 fcp_lun; /* FCP logical unit number */
- u8 crn; /* command reference number */
- u8 reserved0:5; /* reserved */
- u8 task_attribute:3; /* task attribute */
- u8 task_management_flags; /* task management flags */
- u8 add_fcp_cdb_length:6; /* additional FCP_CDB length */
- u8 rddata:1; /* read data */
- u8 wddata:1; /* write data */
- u8 fcp_cdb[FCP_CDB_LENGTH];
-} __attribute__((packed));
-
-/* FCP(-2) FCP_RSP IU */
-struct fcp_rsp_iu {
- u8 reserved0[10];
- union {
- struct {
- u8 reserved1:3;
- u8 fcp_conf_req:1;
- u8 fcp_resid_under:1;
- u8 fcp_resid_over:1;
- u8 fcp_sns_len_valid:1;
- u8 fcp_rsp_len_valid:1;
- } bits;
- u8 value;
- } validity;
- u8 scsi_status;
- u32 fcp_resid;
- u32 fcp_sns_len;
- u32 fcp_rsp_len;
-} __attribute__((packed));
-
-
-#define RSP_CODE_GOOD 0
-#define RSP_CODE_LENGTH_MISMATCH 1
-#define RSP_CODE_FIELD_INVALID 2
-#define RSP_CODE_RO_MISMATCH 3
-#define RSP_CODE_TASKMAN_UNSUPP 4
-#define RSP_CODE_TASKMAN_FAILED 5
-
/* see fc-fs */
#define LS_RSCN 0x61
#define LS_LOGO 0x05
extern struct zfcp_data zfcp_data;
extern int zfcp_adapter_scsi_register(struct zfcp_adapter *);
extern void zfcp_adapter_scsi_unregister(struct zfcp_adapter *);
-extern char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *);
extern struct fc_function_template zfcp_transport_functions;
extern void zfcp_scsi_rport_work(struct work_struct *);
extern void zfcp_scsi_schedule_rport_register(struct zfcp_port *);
--- /dev/null
+/*
+ * zfcp device driver
+ *
+ * Fibre Channel related definitions and inline functions for the zfcp
+ * device driver
+ *
+ * Copyright IBM Corporation 2009
+ */
+
+#ifndef ZFCP_FC_H
+#define ZFCP_FC_H
+
+#include <scsi/fc/fc_fcp.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_tcq.h>
+
+/**
+ * zfcp_fc_scsi_to_fcp - setup FCP command with data from scsi_cmnd
+ * @fcp: fcp_cmnd to setup
+ * @scsi: scsi_cmnd where to get LUN, task attributes/flags and CDB
+ */
+static inline
+void zfcp_fc_scsi_to_fcp(struct fcp_cmnd *fcp, struct scsi_cmnd *scsi)
+{
+ char tag[2];
+
+ int_to_scsilun(scsi->device->lun, (struct scsi_lun *) &fcp->fc_lun);
+
+ if (scsi_populate_tag_msg(scsi, tag)) {
+ switch (tag[0]) {
+ case MSG_ORDERED_TAG:
+ fcp->fc_pri_ta |= FCP_PTA_ORDERED;
+ break;
+ case MSG_SIMPLE_TAG:
+ fcp->fc_pri_ta |= FCP_PTA_SIMPLE;
+ break;
+ };
+ } else
+ fcp->fc_pri_ta = FCP_PTA_SIMPLE;
+
+ if (scsi->sc_data_direction == DMA_FROM_DEVICE)
+ fcp->fc_flags |= FCP_CFL_RDDATA;
+ if (scsi->sc_data_direction == DMA_TO_DEVICE)
+ fcp->fc_flags |= FCP_CFL_WRDATA;
+
+ memcpy(fcp->fc_cdb, scsi->cmnd, scsi->cmd_len);
+
+ fcp->fc_dl = scsi_bufflen(scsi);
+}
+
+/**
+ * zfcp_fc_fcp_tm - setup FCP command as task management command
+ * @fcp: fcp_cmnd to setup
+ * @dev: scsi_device where to send the task management command
+ * @tm: task management flags to setup tm command
+ */
+static inline
+void zfcp_fc_fcp_tm(struct fcp_cmnd *fcp, struct scsi_device *dev, u8 tm_flags)
+{
+ int_to_scsilun(dev->lun, (struct scsi_lun *) &fcp->fc_lun);
+ fcp->fc_tm_flags |= tm_flags;
+}
+
+/**
+ * zfcp_fc_evap_fcp_rsp - evaluate FCP RSP IU and update scsi_cmnd accordingly
+ * @fcp_rsp: FCP RSP IU to evaluate
+ * @scsi: SCSI command where to update status and sense buffer
+ */
+static inline
+void zfcp_fc_eval_fcp_rsp(struct fcp_resp_with_ext *fcp_rsp,
+ struct scsi_cmnd *scsi)
+{
+ struct fcp_resp_rsp_info *rsp_info;
+ char *sense;
+ u32 sense_len, resid;
+ u8 rsp_flags;
+
+ set_msg_byte(scsi, COMMAND_COMPLETE);
+ scsi->result |= fcp_rsp->resp.fr_status;
+
+ rsp_flags = fcp_rsp->resp.fr_flags;
+
+ if (unlikely(rsp_flags & FCP_RSP_LEN_VAL)) {
+ rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
+ if (rsp_info->rsp_code == FCP_TMF_CMPL)
+ set_host_byte(scsi, DID_OK);
+ else {
+ set_host_byte(scsi, DID_ERROR);
+ return;
+ }
+ }
+
+ if (unlikely(rsp_flags & FCP_SNS_LEN_VAL)) {
+ sense = (char *) &fcp_rsp[1];
+ if (rsp_flags & FCP_RSP_LEN_VAL)
+ sense += fcp_rsp->ext.fr_sns_len;
+ sense_len = min(fcp_rsp->ext.fr_sns_len,
+ (u32) SCSI_SENSE_BUFFERSIZE);
+ memcpy(scsi->sense_buffer, sense, sense_len);
+ }
+
+ if (unlikely(rsp_flags & FCP_RESID_UNDER)) {
+ resid = fcp_rsp->ext.fr_resid;
+ scsi_set_resid(scsi, resid);
+ if (scsi_bufflen(scsi) - resid < scsi->underflow &&
+ !(rsp_flags & FCP_SNS_LEN_VAL) &&
+ fcp_rsp->resp.fr_status == SAM_STAT_GOOD)
+ set_host_byte(scsi, DID_ERROR);
+ }
+}
+
+#endif
#include <linux/blktrace_api.h>
#include "zfcp_ext.h"
+#include "zfcp_fc.h"
#include "zfcp_dbf.h"
static void zfcp_fsf_request_timeout_handler(unsigned long data)
static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req)
{
struct scsi_cmnd *scpnt;
- struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *)
- &(req->qtcb->bottom.io.fcp_rsp);
- u32 sns_len;
- char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1];
+ struct fcp_resp_with_ext *fcp_rsp;
unsigned long flags;
read_lock_irqsave(&req->adapter->abort_lock, flags);
goto skip_fsfstatus;
}
- set_msg_byte(scpnt, COMMAND_COMPLETE);
-
- scpnt->result |= fcp_rsp_iu->scsi_status;
+ fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
+ zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
zfcp_fsf_req_trace(req, scpnt);
- if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) {
- if (fcp_rsp_info[3] == RSP_CODE_GOOD)
- set_host_byte(scpnt, DID_OK);
- else {
- set_host_byte(scpnt, DID_ERROR);
- goto skip_fsfstatus;
- }
- }
-
- if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) {
- sns_len = FSF_FCP_RSP_SIZE - sizeof(struct fcp_rsp_iu) +
- fcp_rsp_iu->fcp_rsp_len;
- sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE);
- sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len);
-
- memcpy(scpnt->sense_buffer,
- zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len);
- }
-
- if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) {
- scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid);
- if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) <
- scpnt->underflow)
- set_host_byte(scpnt, DID_ERROR);
- }
skip_fsfstatus:
if (scpnt->result != 0)
zfcp_dbf_scsi_result("erro", 3, req->adapter->dbf, scpnt, req);
static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req)
{
- struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *)
- &(req->qtcb->bottom.io.fcp_rsp);
- char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1];
+ struct fcp_resp_with_ext *fcp_rsp;
+ struct fcp_resp_rsp_info *rsp_info;
- if ((fcp_rsp_info[3] != RSP_CODE_GOOD) ||
+ fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
+ rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
+
+ if ((rsp_info->rsp_code != FCP_TMF_CMPL) ||
(req->status & ZFCP_STATUS_FSFREQ_ERROR))
req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
}
}
}
-static void zfcp_set_fcp_dl(struct fcp_cmnd_iu *fcp_cmd, u32 fcp_dl)
-{
- u32 *fcp_dl_ptr;
-
- /*
- * fcp_dl_addr = start address of fcp_cmnd structure +
- * size of fixed part + size of dynamically sized add_dcp_cdb field
- * SEE FCP-2 documentation
- */
- fcp_dl_ptr = (u32 *) ((unsigned char *) &fcp_cmd[1] +
- (fcp_cmd->add_fcp_cdb_length << 2));
- *fcp_dl_ptr = fcp_dl;
-}
-
/**
* zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
* @unit: unit where command is sent to
struct scsi_cmnd *scsi_cmnd)
{
struct zfcp_fsf_req *req;
- struct fcp_cmnd_iu *fcp_cmnd_iu;
+ struct fcp_cmnd *fcp_cmnd;
unsigned int sbtype = SBAL_FLAGS0_TYPE_READ;
int real_bytes, retval = -EIO;
struct zfcp_adapter *adapter = unit->port->adapter;
req->qtcb->header.lun_handle = unit->handle;
req->qtcb->header.port_handle = unit->port->handle;
req->qtcb->bottom.io.service_class = FSF_CLASS_3;
+ req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
- fcp_cmnd_iu = (struct fcp_cmnd_iu *) &(req->qtcb->bottom.io.fcp_cmnd);
- fcp_cmnd_iu->fcp_lun = unit->fcp_lun;
/*
* set depending on data direction:
* data direction bits in SBALE (SB Type)
* data direction bits in QTCB
- * data direction bits in FCP_CMND IU
*/
switch (scsi_cmnd->sc_data_direction) {
case DMA_NONE:
break;
case DMA_FROM_DEVICE:
req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ;
- fcp_cmnd_iu->rddata = 1;
break;
case DMA_TO_DEVICE:
req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE;
sbtype = SBAL_FLAGS0_TYPE_WRITE;
- fcp_cmnd_iu->wddata = 1;
break;
case DMA_BIDIRECTIONAL:
goto failed_scsi_cmnd;
}
- if (likely((scsi_cmnd->device->simple_tags) ||
- ((atomic_read(&unit->status) & ZFCP_STATUS_UNIT_READONLY) &&
- (atomic_read(&unit->status) & ZFCP_STATUS_UNIT_SHARED))))
- fcp_cmnd_iu->task_attribute = SIMPLE_Q;
- else
- fcp_cmnd_iu->task_attribute = UNTAGGED;
-
- if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH))
- fcp_cmnd_iu->add_fcp_cdb_length =
- (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2;
-
- memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
-
- req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) +
- fcp_cmnd_iu->add_fcp_cdb_length + sizeof(u32);
+ fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
+ zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd);
real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->queue_req, sbtype,
scsi_sglist(scsi_cmnd),
goto failed_scsi_cmnd;
}
- zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes);
-
retval = zfcp_fsf_req_send(req);
if (unlikely(retval))
goto failed_scsi_cmnd;
{
struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *req = NULL;
- struct fcp_cmnd_iu *fcp_cmnd_iu;
+ struct fcp_cmnd *fcp_cmnd;
struct zfcp_qdio *qdio = unit->port->adapter->qdio;
if (unlikely(!(atomic_read(&unit->status) &
req->qtcb->header.port_handle = unit->port->handle;
req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
req->qtcb->bottom.io.service_class = FSF_CLASS_3;
- req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) +
- sizeof(u32);
+ req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
- fcp_cmnd_iu = (struct fcp_cmnd_iu *) &req->qtcb->bottom.io.fcp_cmnd;
- fcp_cmnd_iu->fcp_lun = unit->fcp_lun;
- fcp_cmnd_iu->task_management_flags = tm_flags;
+ fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
+ zfcp_fc_fcp_tm(fcp_cmnd, unit->device, tm_flags);
zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
if (!zfcp_fsf_req_send(req))
#define KMSG_COMPONENT "zfcp"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+#include <linux/types.h>
+#include <scsi/fc/fc_fcp.h>
#include <asm/atomic.h>
#include "zfcp_ext.h"
#include "zfcp_dbf.h"
module_param_named(queue_depth, default_depth, uint, 0600);
MODULE_PARM_DESC(queue_depth, "Default queue depth for new SCSI devices");
-/* Find start of Sense Information in FCP response unit*/
-char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *fcp_rsp_iu)
-{
- char *fcp_sns_info_ptr;
-
- fcp_sns_info_ptr = (unsigned char *) &fcp_rsp_iu[1];
- if (fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)
- fcp_sns_info_ptr += fcp_rsp_iu->fcp_rsp_len;
-
- return fcp_sns_info_ptr;
-}
-
static int zfcp_scsi_change_queue_depth(struct scsi_device *sdev, int depth,
int reason)
{
static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt)
{
- return zfcp_task_mgmt_function(scpnt, FCP_LOGICAL_UNIT_RESET);
+ return zfcp_task_mgmt_function(scpnt, FCP_TMF_LUN_RESET);
}
static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
{
- return zfcp_task_mgmt_function(scpnt, FCP_TARGET_RESET);
+ return zfcp_task_mgmt_function(scpnt, FCP_TMF_TGT_RESET);
}
static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
adapter->scsi_host->max_lun = 1;
adapter->scsi_host->max_channel = 0;
adapter->scsi_host->unique_id = dev_id.devno;
- adapter->scsi_host->max_cmd_len = 255;
+ adapter->scsi_host->max_cmd_len = 16; /* in struct fcp_cmnd */
adapter->scsi_host->transportt = zfcp_data.scsi_transport_template;
adapter->scsi_host->hostdata[0] = (unsigned long) adapter;
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