Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (276 commits)
  [SCSI] zfcp: Trigger logging in the FCP channel on qdio error conditions
  [SCSI] zfcp: Introduce experimental support for DIF/DIX
  [SCSI] zfcp: Enable data division support for FCP devices
  [SCSI] zfcp: Prevent access on uninitialized memory.
  [SCSI] zfcp: Post events through FC transport class
  [SCSI] zfcp: Cleanup QDIO attachment and improve processing.
  [SCSI] zfcp: Cleanup function parameters for sbal value.
  [SCSI] zfcp: Use correct width for timer_interval field
  [SCSI] zfcp: Remove SCSI device when removing unit
  [SCSI] zfcp: Use memdup_user and kstrdup
  [SCSI] zfcp: Fix retry after failed "open port" erp action
  [SCSI] zfcp: Fail erp after timeout
  [SCSI] zfcp: Use forced_reopen in terminate_rport_io callback
  [SCSI] zfcp: Register SCSI devices after successful fc_remote_port_add
  [SCSI] zfcp: Do not try "forced close" when port is already closed
  [SCSI] zfcp: Do not unblock rport from REOPEN_PORT_FORCED
  [SCSI] sd: add support for runtime PM
  [SCSI] implement runtime Power Management
  [SCSI] convert to the new PM framework
  [SCSI] Unify SAM_ and SAM_STAT_ macros
  ...

1 files changed, 113 insertions, 56 deletions

diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index 71663fb77310..9d1d7d1842ce 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -21,6 +21,7 @@
 static void zfcp_fsf_request_timeout_handler(unsigned long data)
 {
         struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
+        zfcp_qdio_siosl(adapter);
         zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
                                 "fsrth_1", NULL);
 }
@@ -274,6 +275,7 @@ static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
                 break;
         case FSF_STATUS_READ_LINK_DOWN:
                 zfcp_fsf_status_read_link_down(req);
+                zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKDOWN, 0);
                 break;
         case FSF_STATUS_READ_LINK_UP:
                 dev_info(&adapter->ccw_device->dev,
@@ -286,6 +288,8 @@ static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
                                         ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
                                         ZFCP_STATUS_COMMON_ERP_FAILED,
                                         "fssrh_2", req);
+                zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKUP, 0);
+
                 break;
         case FSF_STATUS_READ_NOTIFICATION_LOST:
                 if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED)
@@ -323,6 +327,7 @@ static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
                 dev_err(&req->adapter->ccw_device->dev,
                         "The FCP adapter reported a problem "
                         "that cannot be recovered\n");
+                zfcp_qdio_siosl(req->adapter);
                 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1", req);
                 break;
         }
@@ -413,6 +418,7 @@ static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
                 dev_err(&adapter->ccw_device->dev,
                         "0x%x is not a valid transfer protocol status\n",
                         qtcb->prefix.prot_status);
+                zfcp_qdio_siosl(adapter);
                 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9", req);
         }
         req->status |= ZFCP_STATUS_FSFREQ_ERROR;
@@ -495,7 +501,7 @@ static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
         fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
 
         adapter->hydra_version = bottom->adapter_type;
-        adapter->timer_ticks = bottom->timer_interval;
+        adapter->timer_ticks = bottom->timer_interval & ZFCP_FSF_TIMER_INT_MASK;
         adapter->stat_read_buf_num = max(bottom->status_read_buf_num,
                                          (u16)FSF_STATUS_READS_RECOM);
 
@@ -523,6 +529,8 @@ static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
                 return -EIO;
         }
 
+        zfcp_scsi_set_prot(adapter);
+
         return 0;
 }
 
@@ -732,7 +740,7 @@ static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
 
         zfcp_reqlist_add(adapter->req_list, req);
 
-        req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q.count);
+        req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q_free);
         req->issued = get_clock();
         if (zfcp_qdio_send(qdio, &req->qdio_req)) {
                 del_timer(&req->timer);
@@ -959,8 +967,7 @@ static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio,
 
 static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
                                        struct scatterlist *sg_req,
-                                       struct scatterlist *sg_resp,
-                                       int max_sbals)
+                                       struct scatterlist *sg_resp)
 {
         struct zfcp_adapter *adapter = req->adapter;
         u32 feat = adapter->adapter_features;
@@ -983,18 +990,19 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
                 return 0;
         }
 
-        bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req,
-                                        sg_req, max_sbals);
+        bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req, sg_req);
         if (bytes <= 0)
                 return -EIO;
+        zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
         req->qtcb->bottom.support.req_buf_length = bytes;
         zfcp_qdio_skip_to_last_sbale(&req->qdio_req);
 
         bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req,
-                                        sg_resp, max_sbals);
+                                        sg_resp);
         req->qtcb->bottom.support.resp_buf_length = bytes;
         if (bytes <= 0)
                 return -EIO;
+        zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
 
         return 0;
 }
@@ -1002,11 +1010,11 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
 static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
                                  struct scatterlist *sg_req,
                                  struct scatterlist *sg_resp,
-                                 int max_sbals, unsigned int timeout)
+                                 unsigned int timeout)
 {
         int ret;
 
-        ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp, max_sbals);
+        ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp);
         if (ret)
                 return ret;
 
@@ -1046,8 +1054,7 @@ int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
         }
 
         req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-        ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp,
-                                    ZFCP_FSF_MAX_SBALS_PER_REQ, timeout);
+        ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout);
         if (ret)
                 goto failed_send;
 
@@ -1143,7 +1150,10 @@ int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
         }
 
         req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-        ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, 2, timeout);
+
+        zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2);
+
+        ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout);
 
         if (ret)
                 goto failed_send;
@@ -2025,7 +2035,7 @@ static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
         blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
         if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
                 blktrc.flags |= ZFCP_BLK_REQ_ERROR;
-        blktrc.inb_usage = req->qdio_req.qdio_inb_usage;
+        blktrc.inb_usage = 0;
         blktrc.outb_usage = req->qdio_req.qdio_outb_usage;
 
         if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA &&
@@ -2035,9 +2045,13 @@ static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
                 blktrc.fabric_lat = lat_in->fabric_lat * ticks;
 
                 switch (req->qtcb->bottom.io.data_direction) {
+                case FSF_DATADIR_DIF_READ_STRIP:
+                case FSF_DATADIR_DIF_READ_CONVERT:
                 case FSF_DATADIR_READ:
                         lat = &unit->latencies.read;
                         break;
+                case FSF_DATADIR_DIF_WRITE_INSERT:
+                case FSF_DATADIR_DIF_WRITE_CONVERT:
                 case FSF_DATADIR_WRITE:
                         lat = &unit->latencies.write;
                         break;
@@ -2078,6 +2092,21 @@ static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req)
                 goto skip_fsfstatus;
         }
 
+        switch (req->qtcb->header.fsf_status) {
+        case FSF_INCONSISTENT_PROT_DATA:
+        case FSF_INVALID_PROT_PARM:
+                set_host_byte(scpnt, DID_ERROR);
+                goto skip_fsfstatus;
+        case FSF_BLOCK_GUARD_CHECK_FAILURE:
+                zfcp_scsi_dif_sense_error(scpnt, 0x1);
+                goto skip_fsfstatus;
+        case FSF_APP_TAG_CHECK_FAILURE:
+                zfcp_scsi_dif_sense_error(scpnt, 0x2);
+                goto skip_fsfstatus;
+        case FSF_REF_TAG_CHECK_FAILURE:
+                zfcp_scsi_dif_sense_error(scpnt, 0x3);
+                goto skip_fsfstatus;
+        }
         fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
         zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
 
@@ -2187,6 +2216,44 @@ skip_fsfstatus:
         }
 }
 
+static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir)
+{
+        switch (scsi_get_prot_op(scsi_cmnd)) {
+        case SCSI_PROT_NORMAL:
+                switch (scsi_cmnd->sc_data_direction) {
+                case DMA_NONE:
+                        *data_dir = FSF_DATADIR_CMND;
+                        break;
+                case DMA_FROM_DEVICE:
+                        *data_dir = FSF_DATADIR_READ;
+                        break;
+                case DMA_TO_DEVICE:
+                        *data_dir = FSF_DATADIR_WRITE;
+                        break;
+                case DMA_BIDIRECTIONAL:
+                        return -EINVAL;
+                }
+                break;
+
+        case SCSI_PROT_READ_STRIP:
+                *data_dir = FSF_DATADIR_DIF_READ_STRIP;
+                break;
+        case SCSI_PROT_WRITE_INSERT:
+                *data_dir = FSF_DATADIR_DIF_WRITE_INSERT;
+                break;
+        case SCSI_PROT_READ_PASS:
+                *data_dir = FSF_DATADIR_DIF_READ_CONVERT;
+                break;
+        case SCSI_PROT_WRITE_PASS:
+                *data_dir = FSF_DATADIR_DIF_WRITE_CONVERT;
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        return 0;
+}
+
 /**
  * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
  * @unit: unit where command is sent to
@@ -2198,16 +2265,17 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
         struct zfcp_fsf_req *req;
         struct fcp_cmnd *fcp_cmnd;
         unsigned int sbtype = SBAL_FLAGS0_TYPE_READ;
-        int real_bytes, retval = -EIO;
+        int real_bytes, retval = -EIO, dix_bytes = 0;
         struct zfcp_adapter *adapter = unit->port->adapter;
         struct zfcp_qdio *qdio = adapter->qdio;
+        struct fsf_qtcb_bottom_io *io;
 
         if (unlikely(!(atomic_read(&unit->status) &
                        ZFCP_STATUS_COMMON_UNBLOCKED)))
                 return -EBUSY;
 
         spin_lock(&qdio->req_q_lock);
-        if (atomic_read(&qdio->req_q.count) <= 0) {
+        if (atomic_read(&qdio->req_q_free) <= 0) {
                 atomic_inc(&qdio->req_q_full);
                 goto out;
         }
@@ -2223,56 +2291,45 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
                 goto out;
         }
 
+        scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
+
+        io = &req->qtcb->bottom.io;
         req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
         req->unit = unit;
         req->data = scsi_cmnd;
         req->handler = zfcp_fsf_send_fcp_command_handler;
         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;
+        io->service_class = FSF_CLASS_3;
+        io->fcp_cmnd_length = FCP_CMND_LEN;
 
-        scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
-
-        /*
-         * set depending on data direction:
-         *      data direction bits in SBALE (SB Type)
-         *      data direction bits in QTCB
-         */
-        switch (scsi_cmnd->sc_data_direction) {
-        case DMA_NONE:
-                req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
-                break;
-        case DMA_FROM_DEVICE:
-                req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ;
-                break;
-        case DMA_TO_DEVICE:
-                req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE;
-                break;
-        case DMA_BIDIRECTIONAL:
-                goto failed_scsi_cmnd;
+        if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) {
+                io->data_block_length = scsi_cmnd->device->sector_size;
+                io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF;
         }
 
+        zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction);
+
         get_device(&unit->dev);
 
         fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
         zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd);
 
+        if (scsi_prot_sg_count(scsi_cmnd)) {
+                zfcp_qdio_set_data_div(qdio, &req->qdio_req,
+                                       scsi_prot_sg_count(scsi_cmnd));
+                dix_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
+                                                scsi_prot_sglist(scsi_cmnd));
+                io->prot_data_length = dix_bytes;
+        }
+
         real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
-                                             scsi_sglist(scsi_cmnd),
-                                             ZFCP_FSF_MAX_SBALS_PER_REQ);
-        if (unlikely(real_bytes < 0)) {
-                if (req->qdio_req.sbal_number >= ZFCP_FSF_MAX_SBALS_PER_REQ) {
-                        dev_err(&adapter->ccw_device->dev,
-                                "Oversize data package, unit 0x%016Lx "
-                                "on port 0x%016Lx closed\n",
-                                (unsigned long long)unit->fcp_lun,
-                                (unsigned long long)unit->port->wwpn);
-                        zfcp_erp_unit_shutdown(unit, 0, "fssfct1", req);
-                        retval = -EINVAL;
-                }
+                                             scsi_sglist(scsi_cmnd));
+
+        if (unlikely(real_bytes < 0) || unlikely(dix_bytes < 0))
                 goto failed_scsi_cmnd;
-        }
+
+        zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
 
         retval = zfcp_fsf_req_send(req);
         if (unlikely(retval))
@@ -2391,13 +2448,13 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
         bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
         bottom->option = fsf_cfdc->option;
 
-        bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
-                                        fsf_cfdc->sg,
-                                        ZFCP_FSF_MAX_SBALS_PER_REQ);
+        bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, fsf_cfdc->sg);
+
         if (bytes != ZFCP_CFDC_MAX_SIZE) {
                 zfcp_fsf_req_free(req);
                 goto out;
         }
+        zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
 
         zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
         retval = zfcp_fsf_req_send(req);
@@ -2419,7 +2476,7 @@ out:
 void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
 {
         struct zfcp_adapter *adapter = qdio->adapter;
-        struct qdio_buffer *sbal = qdio->resp_q.sbal[sbal_idx];
+        struct qdio_buffer *sbal = qdio->res_q[sbal_idx];
         struct qdio_buffer_element *sbale;
         struct zfcp_fsf_req *fsf_req;
         unsigned long req_id;
@@ -2431,17 +2488,17 @@ void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
                 req_id = (unsigned long) sbale->addr;
                 fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id);
 
-                if (!fsf_req)
+                if (!fsf_req) {
                         /*
                          * Unknown request means that we have potentially memory
                          * corruption and must stop the machine immediately.
                          */
+                        zfcp_qdio_siosl(adapter);
                         panic("error: unknown req_id (%lx) on adapter %s.\n",
                               req_id, dev_name(&adapter->ccw_device->dev));
+                }
 
                 fsf_req->qdio_req.sbal_response = sbal_idx;
-                fsf_req->qdio_req.qdio_inb_usage =
-                        atomic_read(&qdio->resp_q.count);
                 zfcp_fsf_req_complete(fsf_req);
 
                 if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY))