zfcp updates for 2.6.36 merge window

diff -urpN linux-2.6/drivers/s390/scsi/zfcp_aux.c linux-2.6-patched/drivers/s390/scsi/zfcp_aux.c
@@ -98,13 +98,11 @@ static void __init zfcp_init_device_setu
 	u64 wwpn, lun;
 
 	/* duplicate devstr and keep the original for sysfs presentation*/
-	str_saved = kmalloc(strlen(devstr) + 1, GFP_KERNEL);
+	str_saved = kstrdup(devstr, GFP_KERNEL);
 	str = str_saved;
 	if (!str)
 		return;
 
-	strcpy(str, devstr);
-
 	token = strsep(&str, ",");
 	if (!token || strlen(token) >= ZFCP_BUS_ID_SIZE)
 		goto err_out;

diff -urpN linux-2.6/drivers/s390/scsi/zfcp_cfdc.c linux-2.6-patched/drivers/s390/scsi/zfcp_cfdc.c
@@ -189,18 +189,12 @@ static long zfcp_cfdc_dev_ioctl(struct f
 	if (!fsf_cfdc)
 		return -ENOMEM;
 
-	data = kmalloc(sizeof(struct zfcp_cfdc_data), GFP_KERNEL);
-	if (!data) {
-		retval = -ENOMEM;
+	data = memdup_user(data_user, sizeof(*data_user));
+	if (IS_ERR(data)) {
+		retval = PTR_ERR(data);
 		goto no_mem_sense;
 	}
 
-	retval = copy_from_user(data, data_user, sizeof(*data));
-	if (retval) {
-		retval = -EFAULT;
-		goto free_buffer;
-	}
-
 	if (data->signature != 0xCFDCACDF) {
 		retval = -EINVAL;
 		goto free_buffer;

@@ -212,6 +212,7 @@ struct zfcp_port {
 	struct work_struct     test_link_work;
 	struct work_struct     rport_work;
 	enum { RPORT_NONE, RPORT_ADD, RPORT_DEL }  rport_task;
+	unsigned int		starget_id;
 };
 
 struct zfcp_unit {

@@ -564,6 +564,7 @@ static void zfcp_scsi_rport_register(str
 	rport->maxframe_size = port->maxframe_size;
 	rport->supported_classes = port->supported_classes;
 	port->rport = rport;
+	port->starget_id = rport->scsi_target_id;
 
 	zfcp_scsi_queue_unit_register(port);
 }

@@ -290,6 +290,7 @@ static ssize_t zfcp_sysfs_unit_remove_st
 	struct zfcp_unit *unit;
 	u64 fcp_lun;
 	int retval = -EINVAL;
+	struct scsi_device *sdev;
 
 	if (!(port && get_device(&port->dev)))
 		return -EBUSY;

@@ -303,8 +304,13 @@ static ssize_t zfcp_sysfs_unit_remove_st
 	else
 		retval = 0;
 
-	/* wait for possible timeout during SCSI probe */
-	flush_work(&unit->scsi_work);
+	sdev = scsi_device_lookup(port->adapter->scsi_host, 0,
+				  port->starget_id,
+				  scsilun_to_int((struct scsi_lun *)&fcp_lun));
+	if (sdev) {
+		scsi_remove_device(sdev);
+		scsi_device_put(sdev);
+	}
 
 	write_lock_irq(&port->unit_list_lock);
 	list_del(&unit->list);

@@ -495,7 +495,7 @@ static int zfcp_fsf_exchange_config_eval
 	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);
 

@@ -352,6 +352,8 @@ struct fsf_qtcb_bottom_support {
 	u8  els[256];
 } __attribute__ ((packed));
 
+#define ZFCP_FSF_TIMER_INT_MASK	0x3FFF
+
 struct fsf_qtcb_bottom_config {
 	u32 lic_version;
 	u32 feature_selection;

@@ -146,7 +146,7 @@ extern void zfcp_qdio_destroy(struct zfc
 extern int zfcp_qdio_sbal_get(struct zfcp_qdio *);
 extern int zfcp_qdio_send(struct zfcp_qdio *, struct zfcp_qdio_req *);
 extern int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *, struct zfcp_qdio_req *,
-				   struct scatterlist *, int);
+				   struct scatterlist *);
 extern int zfcp_qdio_open(struct zfcp_qdio *);
 extern void zfcp_qdio_close(struct zfcp_qdio *);
 

@@ -959,8 +959,7 @@ static void zfcp_fsf_setup_ct_els_unchai
 
 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;

@@ -983,15 +982,14 @@ static int zfcp_fsf_setup_ct_els_sbals(s
 		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;
 	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;

@@ -1002,11 +1000,11 @@ static int zfcp_fsf_setup_ct_els_sbals(s
 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 +1044,7 @@ int zfcp_fsf_send_ct(struct zfcp_fc_wka_
 	}
 
 	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 +1140,10 @@ int zfcp_fsf_send_els(struct zfcp_adapte
 	}
 
 	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;

@@ -2259,20 +2259,9 @@ int zfcp_fsf_send_fcp_command_task(struc
 	zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd);
 
 	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))
 		goto failed_scsi_cmnd;
-	}
 
 	retval = zfcp_fsf_req_send(req);
 	if (unlikely(retval))

@@ -2391,9 +2380,8 @@ struct zfcp_fsf_req *zfcp_fsf_control_fi
 	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;

@@ -151,14 +151,6 @@
 /* fc service class */
 #define FSF_CLASS_3				0x00000003
 
-/* SBAL chaining */
-#define ZFCP_FSF_MAX_SBALS_PER_REQ		36
-
-/* max. number of (data buffer) SBALEs in largest SBAL chain
- * request ID + QTCB in SBALE 0 + 1 of first SBAL in chain   */
-#define ZFCP_FSF_MAX_SBALES_PER_REQ	\
-	(ZFCP_FSF_MAX_SBALS_PER_REQ * ZFCP_QDIO_MAX_SBALES_PER_SBAL - 2)
-
 /* logging space behind QTCB */
 #define FSF_QTCB_LOG_SIZE			1024
 

@@ -141,15 +141,6 @@ static void zfcp_qdio_int_resp(struct cc
 	zfcp_qdio_resp_put_back(qdio, count);
 }
 
-static void zfcp_qdio_sbal_limit(struct zfcp_qdio *qdio,
-				 struct zfcp_qdio_req *q_req, int max_sbals)
-{
-	int count = atomic_read(&qdio->req_q.count);
-	count = min(count, max_sbals);
-	q_req->sbal_limit = (q_req->sbal_first + count - 1)
-					% QDIO_MAX_BUFFERS_PER_Q;
-}
-
 static struct qdio_buffer_element *
 zfcp_qdio_sbal_chain(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req)
 {

@@ -173,6 +164,7 @@ zfcp_qdio_sbal_chain(struct zfcp_qdio *q
 
 	/* keep this requests number of SBALs up-to-date */
 	q_req->sbal_number++;
+	BUG_ON(q_req->sbal_number > ZFCP_QDIO_MAX_SBALS_PER_REQ);
 
 	/* start at first SBALE of new SBAL */
 	q_req->sbale_curr = 0;

@@ -213,14 +205,11 @@ static void zfcp_qdio_undo_sbals(struct 
  * Returns: number of bytes, or error (negativ)
  */
 int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *qdio, struct zfcp_qdio_req *q_req,
-			    struct scatterlist *sg, int max_sbals)
+			    struct scatterlist *sg)
 {
 	struct qdio_buffer_element *sbale;
 	int bytes = 0;
 
-	/* figure out last allowed SBAL */
-	zfcp_qdio_sbal_limit(qdio, q_req, max_sbals);
-
 	/* set storage-block type for this request */
 	sbale = zfcp_qdio_sbale_req(qdio, q_req);
 	sbale->flags |= q_req->sbtype;

@@ -19,6 +19,14 @@
 /* index of last SBALE (with respect to DMQ bug workaround) */
 #define ZFCP_QDIO_LAST_SBALE_PER_SBAL	(ZFCP_QDIO_MAX_SBALES_PER_SBAL - 1)
 
+/* Max SBALS for chaining */
+#define ZFCP_QDIO_MAX_SBALS_PER_REQ	36
+
+/* max. number of (data buffer) SBALEs in largest SBAL chain
+ * request ID + QTCB in SBALE 0 + 1 of first SBAL in chain   */
+#define ZFCP_QDIO_MAX_SBALES_PER_REQ     \
+	(ZFCP_QDIO_MAX_SBALS_PER_REQ * ZFCP_QDIO_MAX_SBALES_PER_SBAL - 2)
+
 /**
  * struct zfcp_qdio_queue - qdio queue buffer, zfcp index and free count
  * @sbal: qdio buffers

@@ -134,10 +142,14 @@ void zfcp_qdio_req_init(struct zfcp_qdio
 			unsigned long req_id, u32 sbtype, void *data, u32 len)
 {
 	struct qdio_buffer_element *sbale;
+	int count = min(atomic_read(&qdio->req_q.count),
+			ZFCP_QDIO_MAX_SBALS_PER_REQ);
 
 	q_req->sbal_first = q_req->sbal_last = qdio->req_q.first;
 	q_req->sbal_number = 1;
 	q_req->sbtype = sbtype;
+	q_req->sbal_limit = (q_req->sbal_first + count - 1)
+					% QDIO_MAX_BUFFERS_PER_Q;
 
 	sbale = zfcp_qdio_sbale_req(qdio, q_req);
 	sbale->addr = (void *) req_id;

@@ -210,4 +222,20 @@ void zfcp_qdio_skip_to_last_sbale(struct
 	q_req->sbale_curr = ZFCP_QDIO_LAST_SBALE_PER_SBAL;
 }
 
+/**
+ * zfcp_qdio_sbal_limit - set the sbal limit for a request in q_req
+ * @qdio: pointer to struct zfcp_qdio
+ * @q_req: The current zfcp_qdio_req
+ * @max_sbals: maximum number of SBALs allowed
+ */
+static inline
+void zfcp_qdio_sbal_limit(struct zfcp_qdio *qdio,
+			  struct zfcp_qdio_req *q_req, int max_sbals)
+{
+	int count = min(atomic_read(&qdio->req_q.count), max_sbals);
+
+	q_req->sbal_limit = (q_req->sbal_first + count - 1) %
+				QDIO_MAX_BUFFERS_PER_Q;
+}
+
 #endif /* ZFCP_QDIO_H */

@@ -701,11 +701,11 @@ struct zfcp_data zfcp_data = {
 		.eh_host_reset_handler	 = zfcp_scsi_eh_host_reset_handler,
 		.can_queue		 = 4096,
 		.this_id		 = -1,
-		.sg_tablesize		 = ZFCP_FSF_MAX_SBALES_PER_REQ,
+		.sg_tablesize		 = ZFCP_QDIO_MAX_SBALES_PER_REQ,
 		.cmd_per_lun		 = 1,
 		.use_clustering		 = 1,
 		.sdev_attrs		 = zfcp_sysfs_sdev_attrs,
-		.max_sectors		 = (ZFCP_FSF_MAX_SBALES_PER_REQ * 8),
+		.max_sectors		 = (ZFCP_QDIO_MAX_SBALES_PER_REQ * 8),
 		.dma_boundary		 = ZFCP_QDIO_SBALE_LEN - 1,
 		.shost_attrs		 = zfcp_sysfs_shost_attrs,
 	},

@@ -732,7 +732,7 @@ static int zfcp_fsf_req_send(struct zfcp
 
 	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);

@@ -2025,7 +2025,7 @@ static void zfcp_fsf_req_trace(struct zf
 	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 &&

@@ -2207,7 +2207,7 @@ int zfcp_fsf_send_fcp_command_task(struc
 		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;
 	}

@@ -2407,7 +2407,7 @@ 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;

@@ -2428,8 +2428,6 @@ void zfcp_fsf_reqid_check(struct zfcp_qd
 			      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))

292 lines not on this page · raw message

122 lines not on this page · raw message

@@ -524,6 +524,10 @@ struct zfcp_adapter *zfcp_adapter_enqueu
 	rwlock_init(&adapter->port_list_lock);
 	INIT_LIST_HEAD(&adapter->port_list);
 
+	INIT_LIST_HEAD(&adapter->events.list);
+	INIT_WORK(&adapter->events.work, zfcp_fc_post_event);
+	spin_lock_init(&adapter->events.list_lock);
+
 	init_waitqueue_head(&adapter->erp_ready_wq);
 	init_waitqueue_head(&adapter->erp_done_wqh);
 

@@ -37,6 +37,7 @@
 #include <asm/ebcdic.h>
 #include <asm/sysinfo.h>
 #include "zfcp_fsf.h"
+#include "zfcp_fc.h"
 #include "zfcp_qdio.h"
 
 struct zfcp_reqlist;

@@ -190,6 +191,7 @@ struct zfcp_adapter {
 	struct service_level	service_level;
 	struct workqueue_struct	*work_queue;
 	struct device_dma_parameters dma_parms;
+	struct zfcp_fc_events events;
 };
 
 struct zfcp_port {

@@ -96,6 +96,9 @@ extern void zfcp_erp_adapter_access_chan
 extern void zfcp_erp_timeout_handler(unsigned long);
 
 /* zfcp_fc.c */
+extern void zfcp_fc_enqueue_event(struct zfcp_adapter *,
+				enum fc_host_event_code event_code, u32);
+extern void zfcp_fc_post_event(struct work_struct *);
 extern void zfcp_fc_scan_ports(struct work_struct *);
 extern void zfcp_fc_incoming_els(struct zfcp_fsf_req *);
 extern void zfcp_fc_port_did_lookup(struct work_struct *);

66 lines not on this page · raw message

@@ -30,6 +30,30 @@
 #define ZFCP_FC_CTELS_TMO	(2 * FC_DEF_R_A_TOV / 1000)
 
 /**
+ * struct zfcp_fc_event - FC HBAAPI event for internal queueing from irq context
+ * @code: Event code
+ * @data: Event data
+ * @list: list_head for zfcp_fc_events list
+ */
+struct zfcp_fc_event {
+	enum fc_host_event_code code;
+	u32 data;
+	struct list_head list;
+};
+
+/**
+ * struct zfcp_fc_events - Infrastructure for posting FC events from irq context
+ * @list: List for queueing of events from irq context to workqueue
+ * @list_lock: Lock for event list
+ * @work: work_struct for forwarding events in workqueue
+*/
+struct zfcp_fc_events {
+	struct list_head list;
+	spinlock_t list_lock;
+	struct work_struct work;
+};
+
+/**
  * struct zfcp_fc_gid_pn_req - container for ct header plus gid_pn request
  * @ct_hdr: FC GS common transport header
  * @gid_pn: GID_PN request

@@ -274,6 +274,7 @@ static void zfcp_fsf_status_read_handler
 		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 +287,8 @@ static void zfcp_fsf_status_read_handler
 					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)

diff -urpN linux-2.6/drivers/s390/scsi/zfcp_dbf.c linux-2.6-patched/drivers/s390/scsi/zfcp_dbf.c
@@ -1005,7 +1005,7 @@ int zfcp_dbf_adapter_register(struct zfc
 	char dbf_name[DEBUG_MAX_NAME_LEN];
 	struct zfcp_dbf *dbf;
 
-	dbf = kmalloc(sizeof(struct zfcp_dbf), GFP_KERNEL);
+	dbf = kzalloc(sizeof(struct zfcp_dbf), GFP_KERNEL);
 	if (!dbf)
 		return -ENOMEM;
 

@@ -84,6 +84,7 @@ struct qdr {
 
 #define QIB_AC_OUTBOUND_PCI_SUPPORTED	0x40
 #define QIB_RFLAGS_ENABLE_QEBSM		0x80
+#define QIB_RFLAGS_ENABLE_DATA_DIV	0x02
 
 /**
  * struct qib - queue information block (QIB)

@@ -284,6 +285,9 @@ struct slsb {
 	u8 val[QDIO_MAX_BUFFERS_PER_Q];
 } __attribute__ ((packed, aligned(256)));
 
+#define CHSC_AC2_DATA_DIV_AVAILABLE	0x0010
+#define CHSC_AC2_DATA_DIV_ENABLED	0x0002
+
 struct qdio_ssqd_desc {
 	u8 flags;
 	u8:8;

@@ -332,6 +336,7 @@ typedef void qdio_handler_t(struct ccw_d
  * @adapter_name: name for the adapter
  * @qib_param_field_format: format for qib_parm_field
  * @qib_param_field: pointer to 128 bytes or NULL, if no param field
+ * @qib_rflags: rflags to set
  * @input_slib_elements: pointer to no_input_qs * 128 words of data or NULL
  * @output_slib_elements: pointer to no_output_qs * 128 words of data or NULL
  * @no_input_qs: number of input queues

@@ -348,6 +353,7 @@ struct qdio_initialize {
 	unsigned char adapter_name[8];
 	unsigned int qib_param_field_format;
 	unsigned char *qib_param_field;
+	unsigned char qib_rflags;
 	unsigned long *input_slib_elements;
 	unsigned long *output_slib_elements;
 	unsigned int no_input_qs;

@@ -368,6 +368,8 @@ static void setup_qib(struct qdio_irq *i
 	if (qebsm_possible())
 		irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM;
 
+	irq_ptr->qib.rflags |= init_data->qib_rflags;
+
 	irq_ptr->qib.qfmt = init_data->q_format;
 	if (init_data->no_input_qs)
 		irq_ptr->qib.isliba =

@@ -77,6 +77,7 @@ struct zfcp_reqlist;
 #define ZFCP_STATUS_ADAPTER_HOST_CON_INIT	0x00000010
 #define ZFCP_STATUS_ADAPTER_ERP_PENDING		0x00000100
 #define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED	0x00000200
+#define ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED	0x00000400
 
 /* remote port status */
 #define ZFCP_STATUS_PORT_PHYS_OPEN		0x00000001

@@ -283,6 +283,7 @@ static void zfcp_qdio_setup_init_data(st
 	id->q_format = QDIO_ZFCP_QFMT;
 	memcpy(id->adapter_name, dev_name(&id->cdev->dev), 8);
 	ASCEBC(id->adapter_name, 8);
+	id->qib_rflags = QIB_RFLAGS_ENABLE_DATA_DIV;
 	id->qib_param_field_format = 0;
 	id->qib_param_field = NULL;
 	id->input_slib_elements = NULL;

@@ -294,8 +295,8 @@ static void zfcp_qdio_setup_init_data(st
 	id->int_parm = (unsigned long) qdio;
 	id->input_sbal_addr_array = (void **) (qdio->res_q);
 	id->output_sbal_addr_array = (void **) (qdio->req_q);
-
 }
+
 /**
  * zfcp_qdio_allocate - allocate queue memory and initialize QDIO data
  * @adapter: pointer to struct zfcp_adapter

@@ -358,6 +359,7 @@ int zfcp_qdio_open(struct zfcp_qdio *qdi
 	struct qdio_initialize init_data;
 	struct zfcp_adapter *adapter = qdio->adapter;
 	struct ccw_device *cdev = adapter->ccw_device;
+	struct qdio_ssqd_desc ssqd;
 	int cc;
 
 	if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)

@@ -368,6 +370,13 @@ int zfcp_qdio_open(struct zfcp_qdio *qdi
 	if (qdio_establish(&init_data))
 		goto failed_establish;
 
+	if (qdio_get_ssqd_desc(init_data.cdev, &ssqd))
+		goto failed_qdio;
+
+	if (ssqd.qdioac2 & CHSC_AC2_DATA_DIV_ENABLED)
+		atomic_set_mask(ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED,
+				&qdio->adapter->status);
+
 	if (qdio_activate(cdev))
 		goto failed_qdio;
 

@@ -155,6 +155,8 @@ void _zfcp_dbf_hba_fsf_response(const ch
 		if (scsi_cmnd) {
 			response->u.fcp.cmnd = (unsigned long)scsi_cmnd;
 			response->u.fcp.serial = scsi_cmnd->serial_number;
+			response->u.fcp.data_dir =
+				qtcb->bottom.io.data_direction;
 		}
 		break;
 

@@ -326,6 +328,7 @@ static void zfcp_dbf_hba_view_response(c
 	case FSF_QTCB_FCP_CMND:
 		if (r->fsf_req_status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
 			break;
+		zfcp_dbf_out(p, "data_direction", "0x%04x", r->u.fcp.data_dir);
 		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");

@@ -111,6 +111,7 @@ struct zfcp_dbf_hba_record_response {
 		struct {
 			u64 cmnd;
 			u64 serial;
+			u32 data_dir;
 		} fcp;
 		struct {
 			u64 wwpn;

@@ -164,6 +164,8 @@ extern void zfcp_scsi_schedule_rport_blo
 extern void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *);
 extern void zfcp_scsi_scan(struct zfcp_unit *);
 extern void zfcp_scsi_scan_work(struct work_struct *);
+extern void zfcp_scsi_set_prot(struct zfcp_adapter *);
+extern void zfcp_scsi_dif_sense_error(struct scsi_cmnd *, int);
 
 /* zfcp_sysfs.c */
 extern struct attribute_group zfcp_sysfs_unit_attrs;

@@ -220,6 +220,9 @@ void zfcp_fc_scsi_to_fcp(struct fcp_cmnd
 	memcpy(fcp->fc_cdb, scsi->cmnd, scsi->cmd_len);
 
 	fcp->fc_dl = scsi_bufflen(scsi);
+
+	if (scsi_get_prot_type(scsi) == SCSI_PROT_DIF_TYPE1)
+		fcp->fc_dl += fcp->fc_dl / scsi->device->sector_size * 8;
 }
 
 /**

186 lines not on this page · raw message

@@ -80,11 +80,15 @@
 #define FSF_REQUEST_SIZE_TOO_LARGE		0x00000061
 #define FSF_RESPONSE_SIZE_TOO_LARGE		0x00000062
 #define FSF_SBAL_MISMATCH			0x00000063
+#define FSF_INCONSISTENT_PROT_DATA		0x00000070
+#define FSF_INVALID_PROT_PARM			0x00000071
+#define FSF_BLOCK_GUARD_CHECK_FAILURE		0x00000081
+#define FSF_APP_TAG_CHECK_FAILURE		0x00000082
+#define FSF_REF_TAG_CHECK_FAILURE		0x00000083
 #define FSF_ADAPTER_STATUS_AVAILABLE		0x000000AD
 #define FSF_UNKNOWN_COMMAND			0x000000E2
 #define FSF_UNKNOWN_OP_SUBTYPE                  0x000000E3
 #define FSF_INVALID_COMMAND_OPTION              0x000000E5
-/* #define FSF_ERROR                             0x000000FF  */
 
 #define FSF_PROT_STATUS_QUAL_SIZE		16
 #define FSF_STATUS_QUALIFIER_SIZE		16

@@ -147,6 +151,13 @@
 #define FSF_DATADIR_WRITE			0x00000001
 #define FSF_DATADIR_READ			0x00000002
 #define FSF_DATADIR_CMND			0x00000004
+#define FSF_DATADIR_DIF_WRITE_INSERT		0x00000009
+#define FSF_DATADIR_DIF_READ_STRIP		0x0000000a
+#define FSF_DATADIR_DIF_WRITE_CONVERT		0x0000000b
+#define FSF_DATADIR_DIF_READ_CONVERT		0X0000000c
+
+/* data protection control flags */
+#define FSF_APP_TAG_CHECK_ENABLE		0x10
 
 /* fc service class */
 #define FSF_CLASS_3				0x00000003

@@ -162,6 +173,8 @@
 #define FSF_FEATURE_ELS_CT_CHAINED_SBALS	0x00000020
 #define FSF_FEATURE_UPDATE_ALERT		0x00000100
 #define FSF_FEATURE_MEASUREMENT_DATA		0x00000200
+#define FSF_FEATURE_DIF_PROT_TYPE1		0x00010000
+#define FSF_FEATURE_DIX_PROT_TCPIP		0x00020000
 
 /* host connection features */
 #define FSF_FEATURE_NPIV_MODE			0x00000001

@@ -316,9 +329,14 @@ struct fsf_qtcb_header {
 struct fsf_qtcb_bottom_io {
 	u32 data_direction;
 	u32 service_class;
-	u8  res1[8];
+	u8  res1;
+	u8  data_prot_flags;
+	u16 app_tag_value;
+	u32 ref_tag_value;
 	u32 fcp_cmnd_length;
-	u8  res2[12];
+	u32 data_block_length;
+	u32 prot_data_length;
+	u8  res2[4];
 	u8  fcp_cmnd[FSF_FCP_CMND_SIZE];
 	u8  fcp_rsp[FSF_FCP_RSP_SIZE];
 	u8  res3[64];

@@ -193,10 +193,6 @@ int zfcp_qdio_sbals_from_sg(struct zfcp_
 		bytes += sg->length;
 	}
 
-	/* assume that no other SBALEs are to follow in the same SBAL */
-	sbale = zfcp_qdio_sbale_curr(qdio, q_req);
-	sbale->flags |= SBAL_FLAGS_LAST_ENTRY;
-
 	return bytes;
 }
 

@@ -215,4 +215,20 @@ void zfcp_qdio_sbal_limit(struct zfcp_qd
 				QDIO_MAX_BUFFERS_PER_Q;
 }
 
+/**
+ * zfcp_qdio_set_data_div - set data division count
+ * @qdio: pointer to struct zfcp_qdio
+ * @q_req: The current zfcp_qdio_req
+ * @count: The data division count
+ */
+static inline
+void zfcp_qdio_set_data_div(struct zfcp_qdio *qdio,
+			    struct zfcp_qdio_req *q_req, u32 count)
+{
+	struct qdio_buffer_element *sbale;
+
+	sbale = &qdio->req_q[q_req->sbal_first]->element[0];
+	sbale->length = count;
+}
+
 #endif /* ZFCP_QDIO_H */

71 lines not on this page · raw message

@@ -73,6 +73,7 @@ struct zfcp_reqlist;
 
 /* adapter status */
 #define ZFCP_STATUS_ADAPTER_QDIOUP		0x00000002
+#define ZFCP_STATUS_ADAPTER_SIOSL_ISSUED	0x00000004
 #define ZFCP_STATUS_ADAPTER_XCONFIG_OK		0x00000008
 #define ZFCP_STATUS_ADAPTER_HOST_CON_INIT	0x00000010
 #define ZFCP_STATUS_ADAPTER_ERP_PENDING		0x00000100

@@ -152,6 +152,7 @@ extern int zfcp_qdio_sbals_from_sg(struc
 				   struct scatterlist *);
 extern int zfcp_qdio_open(struct zfcp_qdio *);
 extern void zfcp_qdio_close(struct zfcp_qdio *);
+extern void zfcp_qdio_siosl(struct zfcp_adapter *);
 
 /* zfcp_scsi.c */
 extern struct zfcp_data zfcp_data;

@@ -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);
 }

@@ -326,6 +327,7 @@ static void zfcp_fsf_fsfstatus_qual_eval
 		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;
 	}

@@ -416,6 +418,7 @@ static void zfcp_fsf_protstatus_eval(str
 		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;

@@ -2485,13 +2488,15 @@ void zfcp_fsf_reqid_check(struct zfcp_qd
 		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;
 		zfcp_fsf_req_complete(fsf_req);

@@ -30,12 +30,15 @@ static int zfcp_qdio_buffers_enqueue(str
 	return 0;
 }
 
-static void zfcp_qdio_handler_error(struct zfcp_qdio *qdio, char *id)
+static void zfcp_qdio_handler_error(struct zfcp_qdio *qdio, char *id,
+				    unsigned int qdio_err)
 {
 	struct zfcp_adapter *adapter = qdio->adapter;
 
 	dev_warn(&adapter->ccw_device->dev, "A QDIO problem occurred\n");
 
+	if (qdio_err & QDIO_ERROR_SLSB_STATE)
+		zfcp_qdio_siosl(adapter);
 	zfcp_erp_adapter_reopen(adapter,
 				ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
 				ZFCP_STATUS_COMMON_ERP_FAILED, id, NULL);

@@ -74,7 +77,7 @@ static void zfcp_qdio_int_req(struct ccw
 
 	if (unlikely(qdio_err)) {
 		zfcp_dbf_hba_qdio(qdio->adapter->dbf, qdio_err, idx, count);
-		zfcp_qdio_handler_error(qdio, "qdireq1");
+		zfcp_qdio_handler_error(qdio, "qdireq1", qdio_err);
 		return;
 	}
 

@@ -95,7 +98,7 @@ static void zfcp_qdio_int_resp(struct cc
 
 	if (unlikely(qdio_err)) {
 		zfcp_dbf_hba_qdio(qdio->adapter->dbf, qdio_err, idx, count);
-		zfcp_qdio_handler_error(qdio, "qdires1");
+		zfcp_qdio_handler_error(qdio, "qdires1", qdio_err);
 		return;
 	}
 

@@ -361,6 +364,9 @@ int zfcp_qdio_open(struct zfcp_qdio *qdi
 	if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)
 		return -EIO;
 
+	atomic_clear_mask(ZFCP_STATUS_ADAPTER_SIOSL_ISSUED,
+			  &qdio->adapter->status);
+
 	zfcp_qdio_setup_init_data(&init_data, qdio);
 
 	if (qdio_establish(&init_data))

@@ -440,3 +446,26 @@ int zfcp_qdio_setup(struct zfcp_adapter 
 	return 0;
 }
 
+/**
+ * zfcp_qdio_siosl - Trigger logging in FCP channel
+ * @adapter: The zfcp_adapter where to trigger logging
+ *
+ * Call the cio siosl function to trigger hardware logging.  This
+ * wrapper function sets a flag to ensure hardware logging is only
+ * triggered once before going through qdio shutdown.
+ *
+ * The triggers are always run from qdio tasklet context, so no
+ * additional synchronization is necessary.
+ */
+void zfcp_qdio_siosl(struct zfcp_adapter *adapter)
+{
+	int rc;
+
+	if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_SIOSL_ISSUED)
+		return;
+
+	rc = ccw_device_siosl(adapter->ccw_device);
+	if (!rc)
+		atomic_set_mask(ZFCP_STATUS_ADAPTER_SIOSL_ISSUED,
+				&adapter->status);
+}