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提交 c41f8cbd 编写于 作者: S Swen Schillig 提交者： James Bottomley
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[SCSI] zfcp: zfcp_fsf cleanup. 

Code cleanup for the zfcp_fsf.c file.
Signed-off-by: NSwen Schillig <swen@vnet.ibm.com>
Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
上级 60221920
隐藏空白更改
内联 并排
Showing with 1585 addition and 2652 deletion
drivers/s390/scsi/zfcp_aux.c
浏览文件 @ c41f8cbd
...@@ -433,7 +433,7 @@ static void zfcp_dummy_release(struct device *dev) ...@@ -433,7 +433,7 @@ static void zfcp_dummy_release(struct device *dev)
int zfcp_status_read_refill(struct zfcp_adapter *adapter) int zfcp_status_read_refill(struct zfcp_adapter *adapter)
{ {
while (atomic_read(&adapter->stat_miss) > 0) while (atomic_read(&adapter->stat_miss) > 0)
if (zfcp_fsf_status_read(adapter, ZFCP_WAIT_FOR_SBAL)) { if (zfcp_fsf_status_read(adapter)) {
if (atomic_read(&adapter->stat_miss) >= 16) { if (atomic_read(&adapter->stat_miss) >= 16) {
zfcp_erp_adapter_reopen(adapter, 0, 103, NULL); zfcp_erp_adapter_reopen(adapter, 0, 103, NULL);
return 1; return 1;
...@@ -518,10 +518,10 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device) ...@@ -518,10 +518,10 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device)
spin_lock_init(&adapter->san_dbf_lock); spin_lock_init(&adapter->san_dbf_lock);
spin_lock_init(&adapter->scsi_dbf_lock); spin_lock_init(&adapter->scsi_dbf_lock);
spin_lock_init(&adapter->rec_dbf_lock); spin_lock_init(&adapter->rec_dbf_lock);
spin_lock_init(&adapter->req_q.lock);
rwlock_init(&adapter->erp_lock); rwlock_init(&adapter->erp_lock);
rwlock_init(&adapter->abort_lock); rwlock_init(&adapter->abort_lock);
rwlock_init(&adapter->req_q.lock);
sema_init(&adapter->erp_ready_sem, 0); sema_init(&adapter->erp_ready_sem, 0);
......
drivers/s390/scsi/zfcp_dbf.c
浏览文件 @ c41f8cbd
...@@ -961,7 +961,7 @@ void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *fsf_req) ...@@ -961,7 +961,7 @@ void zfcp_san_dbf_event_incoming_els(struct zfcp_fsf_req *fsf_req)
zfcp_san_dbf_event_els("iels", 1, fsf_req, buf->d_id, zfcp_san_dbf_event_els("iels", 1, fsf_req, buf->d_id,
fc_host_port_id(adapter->scsi_host), fc_host_port_id(adapter->scsi_host),
*(u8 *)buf->payload, (void *)buf->payload, buf->payload.data[0], (void *)buf->payload.data,
length); length);
} }
......
drivers/s390/scsi/zfcp_def.h
浏览文件 @ c41f8cbd
...@@ -76,11 +76,6 @@ zfcp_address_to_sg(void *address, struct scatterlist *list, unsigned int size) ...@@ -76,11 +76,6 @@ zfcp_address_to_sg(void *address, struct scatterlist *list, unsigned int size)
#define ZFCP_DEVICE_MODEL 0x03 #define ZFCP_DEVICE_MODEL 0x03
#define ZFCP_DEVICE_MODEL_PRIV 0x04 #define ZFCP_DEVICE_MODEL_PRIV 0x04
/* allow as many chained SBALs as are supported by hardware */
#define ZFCP_MAX_SBALS_PER_REQ FSF_MAX_SBALS_PER_REQ
#define ZFCP_MAX_SBALS_PER_CT_REQ FSF_MAX_SBALS_PER_REQ
#define ZFCP_MAX_SBALS_PER_ELS_REQ FSF_MAX_SBALS_PER_ELS_REQ
/* DMQ bug workaround: don't use last SBALE */ /* DMQ bug workaround: don't use last SBALE */
#define ZFCP_MAX_SBALES_PER_SBAL (QDIO_MAX_ELEMENTS_PER_BUFFER - 1) #define ZFCP_MAX_SBALES_PER_SBAL (QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
...@@ -89,21 +84,17 @@ zfcp_address_to_sg(void *address, struct scatterlist *list, unsigned int size) ...@@ -89,21 +84,17 @@ zfcp_address_to_sg(void *address, struct scatterlist *list, unsigned int size)
/* max. number of (data buffer) SBALEs in largest SBAL chain */ /* max. number of (data buffer) SBALEs in largest SBAL chain */
#define ZFCP_MAX_SBALES_PER_REQ \ #define ZFCP_MAX_SBALES_PER_REQ \
(ZFCP_MAX_SBALS_PER_REQ * ZFCP_MAX_SBALES_PER_SBAL - 2) (FSF_MAX_SBALS_PER_REQ * ZFCP_MAX_SBALES_PER_SBAL - 2)
/* request ID + QTCB in SBALE 0 + 1 of first SBAL in chain */ /* request ID + QTCB in SBALE 0 + 1 of first SBAL in chain */
#define ZFCP_MAX_SECTORS (ZFCP_MAX_SBALES_PER_REQ * 8) #define ZFCP_MAX_SECTORS (ZFCP_MAX_SBALES_PER_REQ * 8)
/* max. number of (data buffer) SBALEs in largest SBAL chain /* max. number of (data buffer) SBALEs in largest SBAL chain
multiplied with number of sectors per 4k block */ multiplied with number of sectors per 4k block */
#define ZFCP_SBAL_TIMEOUT (5*HZ)
#define ZFCP_TYPE2_RECOVERY_TIME 8 /* seconds */ #define ZFCP_TYPE2_RECOVERY_TIME 8 /* seconds */
/********************* FSF SPECIFIC DEFINES *********************************/ /********************* FSF SPECIFIC DEFINES *********************************/
#define ZFCP_ULP_INFO_VERSION 26
#define ZFCP_QTCB_VERSION FSF_QTCB_CURRENT_VERSION
/* ATTENTION: value must not be used by hardware */ /* ATTENTION: value must not be used by hardware */
#define FSF_QTCB_UNSOLICITED_STATUS 0x6305 #define FSF_QTCB_UNSOLICITED_STATUS 0x6305
...@@ -121,8 +112,6 @@ typedef unsigned long long fcp_lun_t; ...@@ -121,8 +112,6 @@ typedef unsigned long long fcp_lun_t;
/* data length field may be at variable position in FCP-2 FCP_CMND IU */ /* data length field may be at variable position in FCP-2 FCP_CMND IU */
typedef unsigned int fcp_dl_t; typedef unsigned int fcp_dl_t;
#define ZFCP_FC_SERVICE_CLASS_DEFAULT FSF_CLASS_3
/* timeout for name-server lookup (in seconds) */ /* timeout for name-server lookup (in seconds) */
#define ZFCP_NS_GID_PN_TIMEOUT 10 #define ZFCP_NS_GID_PN_TIMEOUT 10
...@@ -228,7 +217,6 @@ struct fcp_logo { ...@@ -228,7 +217,6 @@ struct fcp_logo {
* FC-FS stuff * FC-FS stuff
*/ */
#define R_A_TOV 10 /* seconds */ #define R_A_TOV 10 /* seconds */
#define ZFCP_ELS_TIMEOUT (2 * R_A_TOV)
#define ZFCP_LS_RLS 0x0f #define ZFCP_LS_RLS 0x0f
#define ZFCP_LS_ADISC 0x52 #define ZFCP_LS_ADISC 0x52
...@@ -521,7 +509,7 @@ struct zfcp_qdio_queue { ...@@ -521,7 +509,7 @@ struct zfcp_qdio_queue {
in queue (free_count>0) */ in queue (free_count>0) */
atomic_t count; /* number of free buffers atomic_t count; /* number of free buffers
in queue */ in queue */
rwlock_t lock; /* lock for operations on queue */ spinlock_t lock; /* lock for operations on queue */
int pci_batch; /* SBALs since PCI indication int pci_batch; /* SBALs since PCI indication
was last set */ was last set */
}; };
...@@ -686,7 +674,7 @@ struct zfcp_fsf_req { ...@@ -686,7 +674,7 @@ struct zfcp_fsf_req {
u32 fsf_command; /* FSF Command copy */ u32 fsf_command; /* FSF Command copy */
struct fsf_qtcb *qtcb; /* address of associated QTCB */ struct fsf_qtcb *qtcb; /* address of associated QTCB */
u32 seq_no; /* Sequence number of request */ u32 seq_no; /* Sequence number of request */
unsigned long data; /* private data of request */ void *data; /* private data of request */
struct timer_list timer; /* used for erp or scsi er */ struct timer_list timer; /* used for erp or scsi er */
struct zfcp_erp_action *erp_action; /* used if this request is struct zfcp_erp_action *erp_action; /* used if this request is
issued on behalf of erp */ issued on behalf of erp */
...@@ -694,10 +682,9 @@ struct zfcp_fsf_req { ...@@ -694,10 +682,9 @@ struct zfcp_fsf_req {
from emergency pool */ from emergency pool */
unsigned long long issued; /* request sent time (STCK) */ unsigned long long issued; /* request sent time (STCK) */
struct zfcp_unit *unit; struct zfcp_unit *unit;
void (*handler)(struct zfcp_fsf_req *);
}; };
typedef void zfcp_fsf_req_handler_t(struct zfcp_fsf_req*);
/* driver data */ /* driver data */
struct zfcp_data { struct zfcp_data {
struct scsi_host_template scsi_host_template; struct scsi_host_template scsi_host_template;
...@@ -730,7 +717,6 @@ struct zfcp_fsf_req_qtcb { ...@@ -730,7 +717,6 @@ struct zfcp_fsf_req_qtcb {
/********************** ZFCP SPECIFIC DEFINES ********************************/ /********************** ZFCP SPECIFIC DEFINES ********************************/
#define ZFCP_REQ_AUTO_CLEANUP 0x00000002 #define ZFCP_REQ_AUTO_CLEANUP 0x00000002
#define ZFCP_WAIT_FOR_SBAL 0x00000004
#define ZFCP_REQ_NO_QTCB 0x00000008 #define ZFCP_REQ_NO_QTCB 0x00000008
#define ZFCP_SET 0x00000100 #define ZFCP_SET 0x00000100
...@@ -753,15 +739,6 @@ static inline int zfcp_reqlist_hash(unsigned long req_id) ...@@ -753,15 +739,6 @@ static inline int zfcp_reqlist_hash(unsigned long req_id)
return req_id % REQUEST_LIST_SIZE; return req_id % REQUEST_LIST_SIZE;
} }
static inline void zfcp_reqlist_add(struct zfcp_adapter *adapter,
struct zfcp_fsf_req *fsf_req)
{
unsigned int idx;
idx = zfcp_reqlist_hash(fsf_req->req_id);
list_add_tail(&fsf_req->list, &adapter->req_list[idx]);
}
static inline void zfcp_reqlist_remove(struct zfcp_adapter *adapter, static inline void zfcp_reqlist_remove(struct zfcp_adapter *adapter,
struct zfcp_fsf_req *fsf_req) struct zfcp_fsf_req *fsf_req)
{ {
......
drivers/s390/scsi/zfcp_ext.h
浏览文件 @ c41f8cbd
...@@ -70,21 +70,19 @@ extern struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, ...@@ -70,21 +70,19 @@ extern struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
extern void zfcp_fsf_start_timer(struct zfcp_fsf_req *, unsigned long); extern void zfcp_fsf_start_timer(struct zfcp_fsf_req *, unsigned long);
extern void zfcp_erp_start_timer(struct zfcp_fsf_req *); extern void zfcp_erp_start_timer(struct zfcp_fsf_req *);
extern void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *); extern void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *);
extern int zfcp_fsf_status_read(struct zfcp_adapter *, int); extern int zfcp_fsf_status_read(struct zfcp_adapter *);
extern int zfcp_status_read_refill(struct zfcp_adapter *adapter); extern int zfcp_status_read_refill(struct zfcp_adapter *adapter);
extern int zfcp_fsf_req_create(struct zfcp_adapter *, u32, int, mempool_t *,
unsigned long *, struct zfcp_fsf_req **)
__acquires(adapter->req_q.lock);
extern int zfcp_fsf_send_ct(struct zfcp_send_ct *, mempool_t *, extern int zfcp_fsf_send_ct(struct zfcp_send_ct *, mempool_t *,
struct zfcp_erp_action *); struct zfcp_erp_action *);
extern int zfcp_fsf_send_els(struct zfcp_send_els *); extern int zfcp_fsf_send_els(struct zfcp_send_els *);
extern int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *, extern int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *,
struct zfcp_unit *, struct zfcp_unit *,
struct scsi_cmnd *, int, int); struct scsi_cmnd *, int, int);
extern int zfcp_fsf_req_complete(struct zfcp_fsf_req *); extern void zfcp_fsf_req_complete(struct zfcp_fsf_req *);
extern void zfcp_fsf_req_free(struct zfcp_fsf_req *); extern void zfcp_fsf_req_free(struct zfcp_fsf_req *);
extern struct zfcp_fsf_req *zfcp_fsf_send_fcp_command_task_management( extern struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *,
struct zfcp_adapter *, struct zfcp_unit *, u8, int); struct zfcp_unit *, u8,
int);
extern struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command( extern struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(
unsigned long, struct zfcp_adapter *, struct zfcp_unit *, int); unsigned long, struct zfcp_adapter *, struct zfcp_unit *, int);
......
drivers/s390/scsi/zfcp_fc.c
浏览文件 @ c41f8cbd
...@@ -83,8 +83,8 @@ static void zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req) ...@@ -83,8 +83,8 @@ static void zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req)
u16 no_entries; u16 no_entries;
u32 range_mask; u32 range_mask;
fcp_rscn_head = (struct fcp_rscn_head *) status_buffer->payload; fcp_rscn_head = (struct fcp_rscn_head *) status_buffer->payload.data;
fcp_rscn_element = (struct fcp_rscn_element *) status_buffer->payload; fcp_rscn_element = (struct fcp_rscn_element *) fcp_rscn_head;
/* see FC-FS */ /* see FC-FS */
no_entries = fcp_rscn_head->payload_len / no_entries = fcp_rscn_head->payload_len /
...@@ -135,7 +135,7 @@ static void zfcp_fc_incoming_plogi(struct zfcp_fsf_req *req) ...@@ -135,7 +135,7 @@ static void zfcp_fc_incoming_plogi(struct zfcp_fsf_req *req)
struct fsf_status_read_buffer *status_buffer = struct fsf_status_read_buffer *status_buffer =
(struct fsf_status_read_buffer *)req->data; (struct fsf_status_read_buffer *)req->data;
struct fsf_plogi *els_plogi = struct fsf_plogi *els_plogi =
(struct fsf_plogi *) status_buffer->payload; (struct fsf_plogi *) status_buffer->payload.data;
zfcp_fc_incoming_wwpn(req, els_plogi->serv_param.wwpn); zfcp_fc_incoming_wwpn(req, els_plogi->serv_param.wwpn);
} }
...@@ -144,7 +144,8 @@ static void zfcp_fc_incoming_logo(struct zfcp_fsf_req *req) ...@@ -144,7 +144,8 @@ static void zfcp_fc_incoming_logo(struct zfcp_fsf_req *req)
{ {
struct fsf_status_read_buffer *status_buffer = struct fsf_status_read_buffer *status_buffer =
(struct fsf_status_read_buffer *)req->data; (struct fsf_status_read_buffer *)req->data;
struct fcp_logo *els_logo = (struct fcp_logo *) status_buffer->payload; struct fcp_logo *els_logo =
(struct fcp_logo *) status_buffer->payload.data;
zfcp_fc_incoming_wwpn(req, els_logo->nport_wwpn); zfcp_fc_incoming_wwpn(req, els_logo->nport_wwpn);
} }
...@@ -157,7 +158,7 @@ void zfcp_fc_incoming_els(struct zfcp_fsf_req *fsf_req) ...@@ -157,7 +158,7 @@ void zfcp_fc_incoming_els(struct zfcp_fsf_req *fsf_req)
{ {
struct fsf_status_read_buffer *status_buffer = struct fsf_status_read_buffer *status_buffer =
(struct fsf_status_read_buffer *) fsf_req->data; (struct fsf_status_read_buffer *) fsf_req->data;
unsigned int els_type = status_buffer->payload[0]; unsigned int els_type = status_buffer->payload.data[0];
zfcp_san_dbf_event_incoming_els(fsf_req); zfcp_san_dbf_event_incoming_els(fsf_req);
if (els_type == LS_PLOGI) if (els_type == LS_PLOGI)
......
drivers/s390/scsi/zfcp_fsf.c
浏览文件 @ c41f8cbd
...@@ -8,35 +8,6 @@ ...@@ -8,35 +8,6 @@
#include "zfcp_ext.h" #include "zfcp_ext.h"
static int zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *);
static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *);
static int zfcp_fsf_open_port_handler(struct zfcp_fsf_req *);
static int zfcp_fsf_close_port_handler(struct zfcp_fsf_req *);
static int zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *);
static int zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *);
static int zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *);
static int zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *);
static int zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *);
static int zfcp_fsf_send_fcp_command_task_management_handler(
struct zfcp_fsf_req *);
static int zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *);
static int zfcp_fsf_status_read_handler(struct zfcp_fsf_req *);
static int zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *);
static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *);
static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *);
static inline int zfcp_fsf_req_sbal_check(
unsigned long *, struct zfcp_qdio_queue *, int);
static inline int zfcp_use_one_sbal(
struct scatterlist *, int, struct scatterlist *, int);
static struct zfcp_fsf_req *zfcp_fsf_req_alloc(mempool_t *, int);
static int zfcp_fsf_req_send(struct zfcp_fsf_req *);
static int zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *);
static int zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *);
static int zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *);
static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *, u8,
struct fsf_link_down_info *);
static int zfcp_fsf_req_dispatch(struct zfcp_fsf_req *);
/* association between FSF command and FSF QTCB type */ /* association between FSF command and FSF QTCB type */
static u32 fsf_qtcb_type[] = { static u32 fsf_qtcb_type[] = {
[FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND, [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND,
...@@ -54,21 +25,19 @@ static u32 fsf_qtcb_type[] = { ...@@ -54,21 +25,19 @@ static u32 fsf_qtcb_type[] = {
[FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND
}; };
static const char zfcp_act_subtable_type[5][8] = { static const char *zfcp_act_subtable_type[] = {
"unknown", "OS", "WWPN", "DID", "LUN" "unknown", "OS", "WWPN", "DID", "LUN"
}; };
static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table) static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table)
{ {
u16 subtable = (table & 0xffff0000) >> 16; u16 subtable = table >> 16;
u16 rule = table & 0xffff; u16 rule = table & 0xffff;
if (subtable > 0 && if (subtable && subtable < ARRAY_SIZE(zfcp_act_subtable_type))
subtable < ARRAY_SIZE(zfcp_act_subtable_type)) {
dev_warn(&adapter->ccw_device->dev, dev_warn(&adapter->ccw_device->dev,
"Access denied in subtable %s, rule %d.\n", "Access denied in subtable %s, rule %d.\n",
zfcp_act_subtable_type[subtable], rule); zfcp_act_subtable_type[subtable], rule);
}
} }
static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req, static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req,
...@@ -106,90 +75,27 @@ static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req) ...@@ -106,90 +75,27 @@ static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req)
req->status |= ZFCP_STATUS_FSFREQ_ERROR; req->status |= ZFCP_STATUS_FSFREQ_ERROR;
} }
/****************************************************************/ /**
/*************** FSF related Functions *************************/ * zfcp_fsf_req_free - free memory used by fsf request
/****************************************************************/ * @fsf_req: pointer to struct zfcp_fsf_req
/*
* function: zfcp_fsf_req_alloc
*
* purpose: Obtains an fsf_req and potentially a qtcb (for all but
* unsolicited requests) via helper functions
* Does some initial fsf request set-up.
*
* returns: pointer to allocated fsf_req if successfull
* NULL otherwise
*
* locks: none
*
*/
static struct zfcp_fsf_req *
zfcp_fsf_req_alloc(mempool_t *pool, int req_flags)
{
size_t size;
void *ptr;
struct zfcp_fsf_req *fsf_req = NULL;
if (req_flags & ZFCP_REQ_NO_QTCB)
size = sizeof(struct zfcp_fsf_req);
else
size = sizeof(struct zfcp_fsf_req_qtcb);
if (likely(pool))
ptr = mempool_alloc(pool, GFP_ATOMIC);
else {
if (req_flags & ZFCP_REQ_NO_QTCB)
ptr = kmalloc(size, GFP_ATOMIC);
else
ptr = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache,
GFP_ATOMIC);
}
if (unlikely(!ptr))
goto out;
memset(ptr, 0, size);
if (req_flags & ZFCP_REQ_NO_QTCB) {
fsf_req = (struct zfcp_fsf_req *) ptr;
} else {
fsf_req = &((struct zfcp_fsf_req_qtcb *) ptr)->fsf_req;
fsf_req->qtcb = &((struct zfcp_fsf_req_qtcb *) ptr)->qtcb;
}
fsf_req->pool = pool;
out:
return fsf_req;
}
/*
* function: zfcp_fsf_req_free
*
* purpose: Frees the memory of an fsf_req (and potentially a qtcb) or
* returns it into the pool via helper functions.
*
* returns: sod all
*
* locks: none
*/ */
void void zfcp_fsf_req_free(struct zfcp_fsf_req *req)
zfcp_fsf_req_free(struct zfcp_fsf_req *fsf_req)
{ {
if (likely(fsf_req->pool)) { if (likely(req->pool)) {
mempool_free(fsf_req, fsf_req->pool); mempool_free(req, req->pool);
return; return;
} }
if (fsf_req->qtcb) { if (req->qtcb) {
kmem_cache_free(zfcp_data.fsf_req_qtcb_cache, fsf_req); kmem_cache_free(zfcp_data.fsf_req_qtcb_cache, req);
return; return;
} }
kfree(fsf_req);
} }
/* /**
* zfcp_fsf_req_dismiss_all - dismiss all fsf requests
* @adapter: pointer to struct zfcp_adapter
*
* Never ever call this without shutting down the adapter first. * Never ever call this without shutting down the adapter first.
* Otherwise the adapter would continue using and corrupting s390 storage. * Otherwise the adapter would continue using and corrupting s390 storage.
* Included BUG_ON() call to ensure this is done. * Included BUG_ON() call to ensure this is done.
...@@ -197,1815 +103,1359 @@ zfcp_fsf_req_free(struct zfcp_fsf_req *fsf_req) ...@@ -197,1815 +103,1359 @@ zfcp_fsf_req_free(struct zfcp_fsf_req *fsf_req)
*/ */
void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
{ {
struct zfcp_fsf_req *fsf_req, *tmp; struct zfcp_fsf_req *req, *tmp;
unsigned long flags; unsigned long flags;
LIST_HEAD(remove_queue); LIST_HEAD(remove_queue);
unsigned int i; unsigned int i;
BUG_ON(atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)); BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
spin_lock_irqsave(&adapter->req_list_lock, flags); spin_lock_irqsave(&adapter->req_list_lock, flags);
for (i = 0; i < REQUEST_LIST_SIZE; i++) for (i = 0; i < REQUEST_LIST_SIZE; i++)
list_splice_init(&adapter->req_list[i], &remove_queue); list_splice_init(&adapter->req_list[i], &remove_queue);
spin_unlock_irqrestore(&adapter->req_list_lock, flags); spin_unlock_irqrestore(&adapter->req_list_lock, flags);
list_for_each_entry_safe(fsf_req, tmp, &remove_queue, list) { list_for_each_entry_safe(req, tmp, &remove_queue, list) {
list_del(&fsf_req->list); list_del(&req->list);
fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
zfcp_fsf_req_complete(fsf_req); zfcp_fsf_req_complete(req);
}
}
/*
* function: zfcp_fsf_req_complete
*
* purpose: Updates active counts and timers for openfcp-reqs
* May cleanup request after req_eval returns
*
* returns: 0 - success
* !0 - failure
*
* context:
*/
int
zfcp_fsf_req_complete(struct zfcp_fsf_req *fsf_req)
{
int retval = 0;
int cleanup;
if (unlikely(fsf_req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
/*
* Note: all cleanup handling is done in the callchain of
* the function call-chain below.
*/
zfcp_fsf_status_read_handler(fsf_req);
goto out;
} else {
del_timer(&fsf_req->timer);
zfcp_fsf_protstatus_eval(fsf_req);
}
/*
* fsf_req may be deleted due to waking up functions, so
* cleanup is saved here and used later
*/
if (likely(fsf_req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
cleanup = 1;
else
cleanup = 0;
fsf_req->status |= ZFCP_STATUS_FSFREQ_COMPLETED;
/* cleanup request if requested by initiator */
if (likely(cleanup)) {
/*
* lock must not be held here since it will be
* grabed by the called routine, too
*/
zfcp_fsf_req_free(fsf_req);
} else {
/* notify initiator waiting for the requests completion */
/*
* FIXME: Race! We must not access fsf_req here as it might have been
* cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED
* flag. It's an improbable case. But, we have the same paranoia for
* the cleanup flag already.
* Might better be handled using complete()?
* (setting the flag and doing wakeup ought to be atomic
* with regard to checking the flag as long as waitqueue is
* part of the to be released structure)
*/
wake_up(&fsf_req->completion_wq);
}
out:
return retval;
}
/*
* function: zfcp_fsf_protstatus_eval
*
* purpose: evaluates the QTCB of the finished FSF request
* and initiates appropriate actions
* (usually calling FSF command specific handlers)
*
* returns:
*
* context:
*
* locks:
*/
static int
zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *fsf_req)
{
int retval = 0;
struct zfcp_adapter *adapter = fsf_req->adapter;
struct fsf_qtcb *qtcb = fsf_req->qtcb;
union fsf_prot_status_qual *prot_status_qual =
&qtcb->prefix.prot_status_qual;
zfcp_hba_dbf_event_fsf_response(fsf_req);
if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */
goto skip_protstatus;
}
/* evaluate FSF Protocol Status */
switch (qtcb->prefix.prot_status) {
case FSF_PROT_GOOD:
case FSF_PROT_FSF_STATUS_PRESENTED:
break;
case FSF_PROT_QTCB_VERSION_ERROR:
dev_err(&adapter->ccw_device->dev,
"The QTCB version requested by zfcp (0x%x) is not "
"supported by the FCP adapter (lowest supported 0x%x, "
"highest supported 0x%x).\n",
ZFCP_QTCB_VERSION, prot_status_qual->word[0],
prot_status_qual->word[1]);
zfcp_erp_adapter_shutdown(adapter, 0, 117, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_PROT_SEQ_NUMB_ERROR:
zfcp_erp_adapter_reopen(adapter, 0, 98, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY;
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_PROT_UNSUPP_QTCB_TYPE:
dev_err(&adapter->ccw_device->dev,
"Packet header type used by the device driver is "
"incompatible with that used on the adapter.\n");
zfcp_erp_adapter_shutdown(adapter, 0, 118, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_PROT_HOST_CONNECTION_INITIALIZING:
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
&(adapter->status));
break;
case FSF_PROT_DUPLICATE_REQUEST_ID:
dev_err(&adapter->ccw_device->dev,
"The request identifier 0x%Lx is ambiguous.\n",
(unsigned long long)qtcb->bottom.support.req_handle);
zfcp_erp_adapter_shutdown(adapter, 0, 78, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_PROT_LINK_DOWN:
zfcp_fsf_link_down_info_eval(fsf_req, 37,
&prot_status_qual->link_down_info);
/* FIXME: reopening adapter now? better wait for link up */
zfcp_erp_adapter_reopen(adapter, 0, 79, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_PROT_REEST_QUEUE:
/* All ports should be marked as ready to run again */
zfcp_erp_modify_adapter_status(adapter, 28, NULL,
ZFCP_STATUS_COMMON_RUNNING,
ZFCP_SET);
zfcp_erp_adapter_reopen(adapter,
ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
| ZFCP_STATUS_COMMON_ERP_FAILED,
99, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_PROT_ERROR_STATE:
zfcp_erp_adapter_reopen(adapter, 0, 100, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY;
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
default:
dev_err(&adapter->ccw_device->dev,
"Transfer protocol status information"
"provided by the adapter (0x%x) "
"is not compatible with the device driver.\n",
qtcb->prefix.prot_status);
zfcp_erp_adapter_shutdown(adapter, 0, 119, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
} }
skip_protstatus:
/*
* always call specific handlers to give them a chance to do
* something meaningful even in error cases
*/
zfcp_fsf_fsfstatus_eval(fsf_req);
return retval;
} }
/* static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req)
* function: zfcp_fsf_fsfstatus_eval
*
* purpose: evaluates FSF status of completed FSF request
* and acts accordingly
*
* returns:
*/
static int
zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *fsf_req)
{ {
int retval = 0; struct fsf_status_read_buffer *sr_buf = req->data;
struct zfcp_adapter *adapter = req->adapter;
if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) { struct zfcp_port *port;
goto skip_fsfstatus; int d_id = sr_buf->d_id & ZFCP_DID_MASK;
} unsigned long flags;
/* evaluate FSF Status */
switch (fsf_req->qtcb->header.fsf_status) {
case FSF_UNKNOWN_COMMAND:
dev_err(&fsf_req->adapter->ccw_device->dev,
"Command issued by the device driver (0x%x) is "
"not known by the adapter.\n",
fsf_req->qtcb->header.fsf_command);
zfcp_erp_adapter_shutdown(fsf_req->adapter, 0, 120, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_ADAPTER_STATUS_AVAILABLE:
zfcp_fsf_fsfstatus_qual_eval(fsf_req);
break;
}
skip_fsfstatus:
/*
* always call specific handlers to give them a chance to do
* something meaningful even in error cases
*/
zfcp_fsf_req_dispatch(fsf_req);
return retval; read_lock_irqsave(&zfcp_data.config_lock, flags);
list_for_each_entry(port, &adapter->port_list_head, list)
if (port->d_id == d_id) {
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
switch (sr_buf->status_subtype) {
case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT:
zfcp_erp_port_reopen(port, 0, 101, req);
break;
case FSF_STATUS_READ_SUB_ERROR_PORT:
zfcp_erp_port_shutdown(port, 0, 122, req);
break;
}
return;
}
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
} }
/* static void zfcp_fsf_bit_error_threshold(struct zfcp_fsf_req *req)
* function: zfcp_fsf_fsfstatus_qual_eval
*
* purpose: evaluates FSF status-qualifier of completed FSF request
* and acts accordingly
*
* returns:
*/
static int
zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *fsf_req)
{ {
int retval = 0; struct zfcp_adapter *adapter = req->adapter;
struct fsf_status_read_buffer *sr_buf = req->data;
switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) { struct fsf_bit_error_payload *err = &sr_buf->payload.bit_error;
case FSF_SQ_FCP_RSP_AVAILABLE:
break;
case FSF_SQ_RETRY_IF_POSSIBLE:
/* The SCSI-stack may now issue retries or escalate */
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_SQ_COMMAND_ABORTED:
/* Carry the aborted state on to upper layer */
fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTED;
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_SQ_NO_RECOM:
dev_err(&fsf_req->adapter->ccw_device->dev,
"No recommendation could be given for a "
"problem on the adapter.\n");
zfcp_erp_adapter_shutdown(fsf_req->adapter, 0, 121, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_SQ_ULP_PROGRAMMING_ERROR:
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
case FSF_SQ_NO_RETRY_POSSIBLE:
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
/* dealt with in the respective functions */
break;
default:
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
}
return retval; dev_warn(&adapter->ccw_device->dev,
"Warning: bit error threshold data "
"received for the adapter: "
"link failures = %i, loss of sync errors = %i, "
"loss of signal errors = %i, "
"primitive sequence errors = %i, "
"invalid transmission word errors = %i, "
"CRC errors = %i).\n",
err->link_failure_error_count,
err->loss_of_sync_error_count,
err->loss_of_signal_error_count,
err->primitive_sequence_error_count,
err->invalid_transmission_word_error_count,
err->crc_error_count);
dev_warn(&adapter->ccw_device->dev,
"Additional bit error threshold data of the adapter: "
"primitive sequence event time-outs = %i, "
"elastic buffer overrun errors = %i, "
"advertised receive buffer-to-buffer credit = %i, "
"current receice buffer-to-buffer credit = %i, "
"advertised transmit buffer-to-buffer credit = %i, "
"current transmit buffer-to-buffer credit = %i).\n",
err->primitive_sequence_event_timeout_count,
err->elastic_buffer_overrun_error_count,
err->advertised_receive_b2b_credit,
err->current_receive_b2b_credit,
err->advertised_transmit_b2b_credit,
err->current_transmit_b2b_credit);
} }
/** static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, u8 id,
* zfcp_fsf_link_down_info_eval - evaluate link down information block struct fsf_link_down_info *link_down)
*/
static void
zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *fsf_req, u8 id,
struct fsf_link_down_info *link_down)
{ {
struct zfcp_adapter *adapter = fsf_req->adapter; struct zfcp_adapter *adapter = req->adapter;
if (atomic_test_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
&adapter->status))
return; return;
atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
if (link_down == NULL) if (!link_down)
goto out; goto out;
switch (link_down->error_code) { switch (link_down->error_code) {
case FSF_PSQ_LINK_NO_LIGHT: case FSF_PSQ_LINK_NO_LIGHT:
dev_warn(&fsf_req->adapter->ccw_device->dev, dev_warn(&req->adapter->ccw_device->dev,
"The local link is down: " "The local link is down: no light detected.\n");
"no light detected.\n");
break; break;
case FSF_PSQ_LINK_WRAP_PLUG: case FSF_PSQ_LINK_WRAP_PLUG:
dev_warn(&fsf_req->adapter->ccw_device->dev, dev_warn(&req->adapter->ccw_device->dev,
"The local link is down: " "The local link is down: wrap plug detected.\n");
"wrap plug detected.\n");
break; break;
case FSF_PSQ_LINK_NO_FCP: case FSF_PSQ_LINK_NO_FCP:
dev_warn(&fsf_req->adapter->ccw_device->dev, dev_warn(&req->adapter->ccw_device->dev,
"The local link is down: " "The local link is down: "
"adjacent node on link does not support FCP.\n"); "adjacent node on link does not support FCP.\n");
break; break;
case FSF_PSQ_LINK_FIRMWARE_UPDATE: case FSF_PSQ_LINK_FIRMWARE_UPDATE:
dev_warn(&fsf_req->adapter->ccw_device->dev, dev_warn(&req->adapter->ccw_device->dev,
"The local link is down: " "The local link is down: "
"firmware update in progress.\n"); "firmware update in progress.\n");
break; break;
case FSF_PSQ_LINK_INVALID_WWPN: case FSF_PSQ_LINK_INVALID_WWPN:
dev_warn(&fsf_req->adapter->ccw_device->dev, dev_warn(&req->adapter->ccw_device->dev,
"The local link is down: " "The local link is down: "
"duplicate or invalid WWPN detected.\n"); "duplicate or invalid WWPN detected.\n");
break; break;
case FSF_PSQ_LINK_NO_NPIV_SUPPORT: case FSF_PSQ_LINK_NO_NPIV_SUPPORT:
dev_warn(&fsf_req->adapter->ccw_device->dev, dev_warn(&req->adapter->ccw_device->dev,
"The local link is down: " "The local link is down: "
"no support for NPIV by Fabric.\n"); "no support for NPIV by Fabric.\n");
break; break;
case FSF_PSQ_LINK_NO_FCP_RESOURCES: case FSF_PSQ_LINK_NO_FCP_RESOURCES:
dev_warn(&fsf_req->adapter->ccw_device->dev, dev_warn(&req->adapter->ccw_device->dev,
"The local link is down: " "The local link is down: "
"out of resource in FCP daughtercard.\n"); "out of resource in FCP daughtercard.\n");
break; break;
case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: case FSF_PSQ_LINK_NO_FABRIC_RESOURCES:
dev_warn(&fsf_req->adapter->ccw_device->dev, dev_warn(&req->adapter->ccw_device->dev,
"The local link is down: " "The local link is down: "
"out of resource in Fabric.\n"); "out of resource in Fabric.\n");
break; break;
case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE:
dev_warn(&fsf_req->adapter->ccw_device->dev, dev_warn(&req->adapter->ccw_device->dev,
"The local link is down: " "The local link is down: "
"unable to login to Fabric.\n"); "unable to login to Fabric.\n");
break; break;
case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED:
dev_warn(&fsf_req->adapter->ccw_device->dev, dev_warn(&req->adapter->ccw_device->dev,
"WWPN assignment file corrupted on adapter.\n"); "WWPN assignment file corrupted on adapter.\n");
break; break;
case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
dev_warn(&fsf_req->adapter->ccw_device->dev, dev_warn(&req->adapter->ccw_device->dev,
"Mode table corrupted on adapter.\n"); "Mode table corrupted on adapter.\n");
break; break;
case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT:
dev_warn(&fsf_req->adapter->ccw_device->dev, dev_warn(&req->adapter->ccw_device->dev,
"No WWPN for assignment table on adapter.\n"); "No WWPN for assignment table on adapter.\n");
break; break;
default: default:
dev_warn(&fsf_req->adapter->ccw_device->dev, dev_warn(&req->adapter->ccw_device->dev,
"The local link to adapter is down.\n"); "The local link to adapter is down.\n");
} }
out:
out: zfcp_erp_adapter_failed(adapter, id, req);
zfcp_erp_adapter_failed(adapter, id, fsf_req);
} }
/* static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req)
* function: zfcp_fsf_req_dispatch
*
* purpose: calls the appropriate command specific handler
*
* returns:
*/
static int
zfcp_fsf_req_dispatch(struct zfcp_fsf_req *fsf_req)
{ {
struct zfcp_erp_action *erp_action = fsf_req->erp_action; struct zfcp_adapter *adapter = req->adapter;
int retval = 0; struct fsf_status_read_buffer *sr_buf = req->data;
struct fsf_link_down_info *ldi =
(struct fsf_link_down_info *) &sr_buf->payload;
switch (fsf_req->fsf_command) {
case FSF_QTCB_FCP_CMND:
zfcp_fsf_send_fcp_command_handler(fsf_req);
break;
case FSF_QTCB_ABORT_FCP_CMND:
zfcp_fsf_abort_fcp_command_handler(fsf_req);
break;
case FSF_QTCB_SEND_GENERIC:
zfcp_fsf_send_ct_handler(fsf_req);
break;
case FSF_QTCB_OPEN_PORT_WITH_DID: switch (sr_buf->status_subtype) {
zfcp_fsf_open_port_handler(fsf_req); case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
dev_warn(&adapter->ccw_device->dev,
"Physical link is down.\n");
zfcp_fsf_link_down_info_eval(req, 38, ldi);
break; break;
case FSF_STATUS_READ_SUB_FDISC_FAILED:
case FSF_QTCB_OPEN_LUN: dev_warn(&adapter->ccw_device->dev,
zfcp_fsf_open_unit_handler(fsf_req); "Local link is down "
"due to failed FDISC login.\n");
zfcp_fsf_link_down_info_eval(req, 39, ldi);
break; break;
case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
dev_warn(&adapter->ccw_device->dev,
"Local link is down "
"due to firmware update on adapter.\n");
zfcp_fsf_link_down_info_eval(req, 40, NULL);
};
}
case FSF_QTCB_CLOSE_LUN: static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
zfcp_fsf_close_unit_handler(fsf_req); {
break; struct zfcp_adapter *adapter = req->adapter;
struct fsf_status_read_buffer *sr_buf = req->data;
case FSF_QTCB_CLOSE_PORT: if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
zfcp_fsf_close_port_handler(fsf_req); zfcp_hba_dbf_event_fsf_unsol("dism", adapter, sr_buf);
break; mempool_free(sr_buf, adapter->pool.data_status_read);
zfcp_fsf_req_free(req);
return;
}
case FSF_QTCB_CLOSE_PHYSICAL_PORT: zfcp_hba_dbf_event_fsf_unsol("read", adapter, sr_buf);
zfcp_fsf_close_physical_port_handler(fsf_req);
break;
case FSF_QTCB_EXCHANGE_CONFIG_DATA: switch (sr_buf->status_type) {
zfcp_fsf_exchange_config_data_handler(fsf_req); case FSF_STATUS_READ_PORT_CLOSED:
zfcp_fsf_status_read_port_closed(req);
break; break;
case FSF_STATUS_READ_INCOMING_ELS:
case FSF_QTCB_EXCHANGE_PORT_DATA: zfcp_fc_incoming_els(req);
zfcp_fsf_exchange_port_data_handler(fsf_req);
break; break;
case FSF_STATUS_READ_SENSE_DATA_AVAIL:
case FSF_QTCB_SEND_ELS:
zfcp_fsf_send_els_handler(fsf_req);
break; break;
case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
case FSF_QTCB_DOWNLOAD_CONTROL_FILE: zfcp_fsf_bit_error_threshold(req);
zfcp_fsf_control_file_handler(fsf_req);
break; break;
case FSF_STATUS_READ_LINK_DOWN:
case FSF_QTCB_UPLOAD_CONTROL_FILE: zfcp_fsf_status_read_link_down(req);
zfcp_fsf_control_file_handler(fsf_req); break;
case FSF_STATUS_READ_LINK_UP:
dev_info(&adapter->ccw_device->dev,
"Local link was replugged.\n");
/* All ports should be marked as ready to run again */
zfcp_erp_modify_adapter_status(adapter, 30, NULL,
ZFCP_STATUS_COMMON_RUNNING,
ZFCP_SET);
zfcp_erp_adapter_reopen(adapter,
ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
ZFCP_STATUS_COMMON_ERP_FAILED,
102, req);
break;
case FSF_STATUS_READ_NOTIFICATION_LOST:
if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED)
zfcp_erp_adapter_access_changed(adapter, 135, req);
if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
schedule_work(&adapter->scan_work);
break;
case FSF_STATUS_READ_CFDC_UPDATED:
zfcp_erp_adapter_access_changed(adapter, 136, req);
break;
case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
adapter->adapter_features = sr_buf->payload.word[0];
break; break;
} }
if (!erp_action) mempool_free(sr_buf, adapter->pool.data_status_read);
return retval; zfcp_fsf_req_free(req);
zfcp_erp_async_handler(erp_action, 0); atomic_inc(&adapter->stat_miss);
schedule_work(&adapter->stat_work);
}
return retval; static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
{
switch (req->qtcb->header.fsf_status_qual.word[0]) {
case FSF_SQ_FCP_RSP_AVAILABLE:
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
case FSF_SQ_NO_RETRY_POSSIBLE:
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
return;
case FSF_SQ_COMMAND_ABORTED:
req->status |= ZFCP_STATUS_FSFREQ_ABORTED;
break;
case FSF_SQ_NO_RECOM:
dev_err(&req->adapter->ccw_device->dev,
"No recommendation could be given for a "
"problem on the adapter.\n");
zfcp_erp_adapter_shutdown(req->adapter, 0, 121, req);
break;
}
/* all non-return stats set FSFREQ_ERROR*/
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
} }
/* static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req)
* function: zfcp_fsf_status_read
*
* purpose: initiates a Status Read command at the specified adapter
*
* returns:
*/
int
zfcp_fsf_status_read(struct zfcp_adapter *adapter, int req_flags)
{ {
struct zfcp_fsf_req *fsf_req; if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
struct fsf_status_read_buffer *status_buffer; return;
unsigned long lock_flags;
volatile struct qdio_buffer_element *sbale;
int retval;
/* setup new FSF request */
retval = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS,
req_flags | ZFCP_REQ_NO_QTCB,
adapter->pool.fsf_req_status_read,
&lock_flags, &fsf_req);
if (retval < 0)
goto failed_req_create;
sbale = zfcp_qdio_sbale_req(fsf_req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS;
sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY;
fsf_req->sbale_curr = 2;
retval = -ENOMEM;
status_buffer =
mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC);
if (!status_buffer)
goto failed_buf;
memset(status_buffer, 0, sizeof (struct fsf_status_read_buffer));
fsf_req->data = (unsigned long) status_buffer;
/* insert pointer to respective buffer */ switch (req->qtcb->header.fsf_status) {
sbale = zfcp_qdio_sbale_curr(fsf_req); case FSF_UNKNOWN_COMMAND:
sbale->addr = (void *) status_buffer; dev_err(&req->adapter->ccw_device->dev,
sbale->length = sizeof(struct fsf_status_read_buffer); "Command issued by the device driver (0x%x) is "
"not known by the adapter.\n",
req->qtcb->header.fsf_command);
zfcp_erp_adapter_shutdown(req->adapter, 0, 120, req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_ADAPTER_STATUS_AVAILABLE:
zfcp_fsf_fsfstatus_qual_eval(req);
break;
}
}
retval = zfcp_fsf_req_send(fsf_req); static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
if (retval) {
goto failed_req_send; struct zfcp_adapter *adapter = req->adapter;
struct fsf_qtcb *qtcb = req->qtcb;
union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual;
goto out; zfcp_hba_dbf_event_fsf_response(req);
failed_req_send: if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
mempool_free(status_buffer, adapter->pool.data_status_read); req->status |= ZFCP_STATUS_FSFREQ_ERROR |
ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */
return;
}
failed_buf: switch (qtcb->prefix.prot_status) {
zfcp_fsf_req_free(fsf_req); case FSF_PROT_GOOD:
failed_req_create: case FSF_PROT_FSF_STATUS_PRESENTED:
zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); return;
out: case FSF_PROT_QTCB_VERSION_ERROR:
write_unlock_irqrestore(&adapter->req_q.lock, lock_flags); dev_err(&adapter->ccw_device->dev,
return retval; "The QTCB version requested by zfcp (0x%x) is not "
"supported by the FCP adapter (lowest supported "
"0x%x, highest supported 0x%x).\n",
FSF_QTCB_CURRENT_VERSION, psq->word[0],
psq->word[1]);
zfcp_erp_adapter_shutdown(adapter, 0, 117, req);
break;
case FSF_PROT_ERROR_STATE:
case FSF_PROT_SEQ_NUMB_ERROR:
zfcp_erp_adapter_reopen(adapter, 0, 98, req);
req->status |= ZFCP_STATUS_FSFREQ_RETRY;
break;
case FSF_PROT_UNSUPP_QTCB_TYPE:
dev_err(&adapter->ccw_device->dev,
"Packet header type used by the device driver is "
"incompatible with that used on the adapter.\n");
zfcp_erp_adapter_shutdown(adapter, 0, 118, req);
break;
case FSF_PROT_HOST_CONNECTION_INITIALIZING:
atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
&adapter->status);
break;
case FSF_PROT_DUPLICATE_REQUEST_ID:
dev_err(&adapter->ccw_device->dev,
"The request identifier 0x%Lx is ambiguous.\n",
(unsigned long long)qtcb->bottom.support.req_handle);
zfcp_erp_adapter_shutdown(adapter, 0, 78, req);
break;
case FSF_PROT_LINK_DOWN:
zfcp_fsf_link_down_info_eval(req, 37, &psq->link_down_info);
/* FIXME: reopening adapter now? better wait for link up */
zfcp_erp_adapter_reopen(adapter, 0, 79, req);
break;
case FSF_PROT_REEST_QUEUE:
/* All ports should be marked as ready to run again */
zfcp_erp_modify_adapter_status(adapter, 28, NULL,
ZFCP_STATUS_COMMON_RUNNING,
ZFCP_SET);
zfcp_erp_adapter_reopen(adapter,
ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
ZFCP_STATUS_COMMON_ERP_FAILED, 99, req);
break;
default:
dev_err(&adapter->ccw_device->dev,
"Transfer protocol status information"
"provided by the adapter (0x%x) "
"is not compatible with the device driver.\n",
qtcb->prefix.prot_status);
zfcp_erp_adapter_shutdown(adapter, 0, 119, req);
}
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
} }
static int /**
zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *fsf_req) * zfcp_fsf_req_complete - process completion of a FSF request
* @fsf_req: The FSF request that has been completed.
*
* When a request has been completed either from the FCP adapter,
* or it has been dismissed due to a queue shutdown, this function
* is called to process the completion status and trigger further
* events related to the FSF request.
*/
void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
{ {
struct fsf_status_read_buffer *status_buffer; if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
struct zfcp_adapter *adapter; zfcp_fsf_status_read_handler(req);
struct zfcp_port *port; return;
unsigned long flags; }
status_buffer = (struct fsf_status_read_buffer *) fsf_req->data; del_timer(&req->timer);
adapter = fsf_req->adapter; zfcp_fsf_protstatus_eval(req);
zfcp_fsf_fsfstatus_eval(req);
req->handler(req);
read_lock_irqsave(&zfcp_data.config_lock, flags); if (req->erp_action)
list_for_each_entry(port, &adapter->port_list_head, list) zfcp_erp_async_handler(req->erp_action, 0);
if (port->d_id == (status_buffer->d_id & ZFCP_DID_MASK)) req->status |= ZFCP_STATUS_FSFREQ_COMPLETED;
break;
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
if (!port || (port->d_id != (status_buffer->d_id & ZFCP_DID_MASK))) if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
goto out; zfcp_fsf_req_free(req);
else
/* notify initiator waiting for the requests completion */
/*
* FIXME: Race! We must not access fsf_req here as it might have been
* cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED
* flag. It's an improbable case. But, we have the same paranoia for
* the cleanup flag already.
* Might better be handled using complete()?
* (setting the flag and doing wakeup ought to be atomic
* with regard to checking the flag as long as waitqueue is
* part of the to be released structure)
*/
wake_up(&req->completion_wq);
}
switch (status_buffer->status_subtype) { static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
{
struct fsf_qtcb_bottom_config *bottom;
struct zfcp_adapter *adapter = req->adapter;
struct Scsi_Host *shost = adapter->scsi_host;
case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT: bottom = &req->qtcb->bottom.config;
zfcp_erp_port_reopen(port, 0, 101, fsf_req);
break;
case FSF_STATUS_READ_SUB_ERROR_PORT: if (req->data)
zfcp_erp_port_shutdown(port, 0, 122, fsf_req); memcpy(req->data, bottom, sizeof(*bottom));
break;
fc_host_node_name(shost) = bottom->nport_serv_param.wwnn;
fc_host_port_name(shost) = bottom->nport_serv_param.wwpn;
fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK;
fc_host_speed(shost) = bottom->fc_link_speed;
fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
adapter->hydra_version = bottom->adapter_type;
adapter->timer_ticks = bottom->timer_interval;
if (fc_host_permanent_port_name(shost) == -1)
fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
switch (bottom->fc_topology) {
case FSF_TOPO_P2P:
adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK;
adapter->peer_wwpn = bottom->plogi_payload.wwpn;
adapter->peer_wwnn = bottom->plogi_payload.wwnn;
fc_host_port_type(shost) = FC_PORTTYPE_PTP;
if (req->erp_action)
dev_info(&adapter->ccw_device->dev,
"Point-to-Point fibrechannel "
"configuration detected.\n");
break;
case FSF_TOPO_FABRIC:
fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
if (req->erp_action)
dev_info(&adapter->ccw_device->dev,
"Switched fabric fibrechannel "
"network detected.\n");
break;
case FSF_TOPO_AL:
fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
dev_err(&adapter->ccw_device->dev,
"Unsupported arbitrated loop fibrechannel "
"topology detected, shutting down "
"adapter.\n");
zfcp_erp_adapter_shutdown(adapter, 0, 127, req);
return -EIO;
default:
fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
dev_err(&adapter->ccw_device->dev,
"The fibrechannel topology reported by the"
" adapter is not known by the zfcp driver,"
" shutting down adapter.\n");
zfcp_erp_adapter_shutdown(adapter, 0, 128, req);
return -EIO;
} }
out:
return 0; return 0;
} }
static void zfcp_fsf_bit_error_threshold(struct zfcp_fsf_req *req) static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
{ {
struct zfcp_adapter *adapter = req->adapter; struct zfcp_adapter *adapter = req->adapter;
struct fsf_status_read_buffer *buf = struct fsf_qtcb *qtcb = req->qtcb;
(struct fsf_status_read_buffer *) req->data; struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config;
struct fsf_bit_error_payload *err = struct Scsi_Host *shost = adapter->scsi_host;
(struct fsf_bit_error_payload *) buf->payload;
dev_warn(&adapter->ccw_device->dev,
"Warning: bit error threshold data "
"received for the adapter: "
"link failures = %i, loss of sync errors = %i, "
"loss of signal errors = %i, "
"primitive sequence errors = %i, "
"invalid transmission word errors = %i, "
"CRC errors = %i).\n",
err->link_failure_error_count,
err->loss_of_sync_error_count,
err->loss_of_signal_error_count,
err->primitive_sequence_error_count,
err->invalid_transmission_word_error_count,
err->crc_error_count);
dev_warn(&adapter->ccw_device->dev,
"Additional bit error threshold data of the adapter: "
"primitive sequence event time-outs = %i, "
"elastic buffer overrun errors = %i, "
"advertised receive buffer-to-buffer credit = %i, "
"current receice buffer-to-buffer credit = %i, "
"advertised transmit buffer-to-buffer credit = %i, "
"current transmit buffer-to-buffer credit = %i).\n",
err->primitive_sequence_event_timeout_count,
err->elastic_buffer_overrun_error_count,
err->advertised_receive_b2b_credit,
err->current_receive_b2b_credit,
err->advertised_transmit_b2b_credit,
err->current_transmit_b2b_credit);
}
/* if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
* function: zfcp_fsf_status_read_handler return;
*
* purpose: is called for finished Open Port command
*
* returns:
*/
static int
zfcp_fsf_status_read_handler(struct zfcp_fsf_req *fsf_req)
{
int retval = 0;
struct zfcp_adapter *adapter = fsf_req->adapter;
struct fsf_status_read_buffer *status_buffer =
(struct fsf_status_read_buffer *) fsf_req->data;
if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
zfcp_hba_dbf_event_fsf_unsol("dism", adapter, status_buffer);
mempool_free(status_buffer, adapter->pool.data_status_read);
zfcp_fsf_req_free(fsf_req);
goto out;
}
zfcp_hba_dbf_event_fsf_unsol("read", adapter, status_buffer); adapter->fsf_lic_version = bottom->lic_version;
adapter->adapter_features = bottom->adapter_features;
adapter->connection_features = bottom->connection_features;
adapter->peer_wwpn = 0;
adapter->peer_wwnn = 0;
adapter->peer_d_id = 0;
switch (status_buffer->status_type) { switch (qtcb->header.fsf_status) {
case FSF_GOOD:
if (zfcp_fsf_exchange_config_evaluate(req))
return;
case FSF_STATUS_READ_PORT_CLOSED: if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
zfcp_fsf_status_read_port_closed(fsf_req); dev_err(&adapter->ccw_device->dev,
"Maximum QTCB size (%d bytes) allowed by "
"the adapter is lower than the minimum "
"required by the driver (%ld bytes).\n",
bottom->max_qtcb_size,
sizeof(struct fsf_qtcb));
zfcp_erp_adapter_shutdown(adapter, 0, 129, req);
return;
}
atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
&adapter->status);
break; break;
case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
fc_host_node_name(shost) = 0;
fc_host_port_name(shost) = 0;
fc_host_port_id(shost) = 0;
fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
adapter->hydra_version = 0;
case FSF_STATUS_READ_INCOMING_ELS: atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
zfcp_fc_incoming_els(fsf_req); &adapter->status);
break;
case FSF_STATUS_READ_SENSE_DATA_AVAIL: zfcp_fsf_link_down_info_eval(req, 42,
&qtcb->header.fsf_status_qual.link_down_info);
break; break;
default:
zfcp_erp_adapter_shutdown(adapter, 0, 130, req);
return;
}
case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
zfcp_fsf_bit_error_threshold(fsf_req); adapter->hardware_version = bottom->hardware_version;
break; memcpy(fc_host_serial_number(shost), bottom->serial_number,
min(FC_SERIAL_NUMBER_SIZE, 17));
EBCASC(fc_host_serial_number(shost),
min(FC_SERIAL_NUMBER_SIZE, 17));
}
case FSF_STATUS_READ_LINK_DOWN: if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) {
switch (status_buffer->status_subtype) { dev_err(&adapter->ccw_device->dev,
case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: "The adapter only supports newer control block "
dev_warn(&adapter->ccw_device->dev, "versions, try updated device driver.\n");
"Physical link is down.\n"); zfcp_erp_adapter_shutdown(adapter, 0, 125, req);
zfcp_fsf_link_down_info_eval(fsf_req, 38, return;
(struct fsf_link_down_info *) }
&status_buffer->payload); if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) {
break; dev_err(&adapter->ccw_device->dev,
case FSF_STATUS_READ_SUB_FDISC_FAILED: "The adapter only supports older control block "
dev_warn(&adapter->ccw_device->dev, "versions, consider a microcode upgrade.\n");
"Local link is down " zfcp_erp_adapter_shutdown(adapter, 0, 126, req);
"due to failed FDISC login.\n"); }
zfcp_fsf_link_down_info_eval(fsf_req, 39, }
(struct fsf_link_down_info *)
&status_buffer->payload);
break;
case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
dev_warn(&adapter->ccw_device->dev,
"Local link is down "
"due to firmware update on adapter.\n");
zfcp_fsf_link_down_info_eval(fsf_req, 40, NULL);
break;
default:
dev_warn(&adapter->ccw_device->dev,
"Local link is down.\n");
zfcp_fsf_link_down_info_eval(fsf_req, 41, NULL);
};
break;
case FSF_STATUS_READ_LINK_UP: static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
dev_info(&adapter->ccw_device->dev, {
"Local link was replugged.\n"); struct zfcp_adapter *adapter = req->adapter;
/* All ports should be marked as ready to run again */ struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port;
zfcp_erp_modify_adapter_status(adapter, 30, NULL, struct Scsi_Host *shost = adapter->scsi_host;
ZFCP_STATUS_COMMON_RUNNING,
ZFCP_SET);
zfcp_erp_adapter_reopen(adapter,
ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
| ZFCP_STATUS_COMMON_ERP_FAILED,
102, fsf_req);
break;
case FSF_STATUS_READ_NOTIFICATION_LOST: if (req->data)
if (status_buffer->status_subtype & memcpy(req->data, bottom, sizeof(*bottom));
FSF_STATUS_READ_SUB_ACT_UPDATED)
zfcp_erp_adapter_access_changed(adapter, 135, fsf_req);
if (status_buffer->status_subtype &
FSF_STATUS_READ_SUB_INCOMING_ELS)
schedule_work(&adapter->scan_work);
break;
case FSF_STATUS_READ_CFDC_UPDATED: if (adapter->connection_features & FSF_FEATURE_NPIV_MODE)
zfcp_erp_adapter_access_changed(adapter, 136, fsf_req); fc_host_permanent_port_name(shost) = bottom->wwpn;
break; else
fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
fc_host_supported_speeds(shost) = bottom->supported_speed;
}
case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
adapter->adapter_features = *(u32*) status_buffer->payload; {
struct zfcp_adapter *adapter = req->adapter;
struct fsf_qtcb *qtcb = req->qtcb;
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
return;
switch (qtcb->header.fsf_status) {
case FSF_GOOD:
zfcp_fsf_exchange_port_evaluate(req);
atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status);
break;
case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
zfcp_fsf_exchange_port_evaluate(req);
atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status);
zfcp_fsf_link_down_info_eval(req, 43,
&qtcb->header.fsf_status_qual.link_down_info);
break; break;
} }
mempool_free(status_buffer, adapter->pool.data_status_read); }
zfcp_fsf_req_free(fsf_req);
/*
* recycle buffer and start new request repeat until outbound
* queue is empty or adapter shutdown is requested
*/
/*
* FIXME(qdio):
* we may wait in the req_create for 5s during shutdown, so
* qdio_cleanup will have to wait at least that long before returning
* with failure to allow us a proper cleanup under all circumstances
*/
/*
* FIXME:
* allocation failure possible? (Is this code needed?)
*/
atomic_inc(&adapter->stat_miss); static int zfcp_fsf_sbal_check(struct zfcp_qdio_queue *queue)
schedule_work(&adapter->stat_work); {
out: spin_lock(&queue->lock);
return retval; if (atomic_read(&queue->count))
return 1;
spin_unlock(&queue->lock);
return 0;
} }
/* static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter)
* function: zfcp_fsf_abort_fcp_command {
* long ret;
* purpose: tells FSF to abort a running SCSI command struct zfcp_qdio_queue *req_q = &adapter->req_q;
*
* returns: address of initiated FSF request spin_unlock(&req_q->lock);
* NULL - request could not be initiated ret = wait_event_interruptible_timeout(adapter->request_wq,
* zfcp_fsf_sbal_check(req_q), 5 * HZ);
* FIXME(design): should be watched by a timeout !!! if (ret > 0)
* FIXME(design) shouldn't this be modified to return an int return 0;
* also...don't know how though
*/ spin_lock(&req_q->lock);
struct zfcp_fsf_req * return -EIO;
zfcp_fsf_abort_fcp_command(unsigned long old_req_id, }
struct zfcp_adapter *adapter,
struct zfcp_unit *unit, int req_flags) static struct zfcp_fsf_req *zfcp_fsf_alloc_noqtcb(mempool_t *pool)
{
struct zfcp_fsf_req *req;
req = mempool_alloc(pool, GFP_ATOMIC);
if (!req)
return NULL;
memset(req, 0, sizeof(*req));
return req;
}
static struct zfcp_fsf_req *zfcp_fsf_alloc_qtcb(mempool_t *pool)
{
struct zfcp_fsf_req_qtcb *qtcb;
if (likely(pool))
qtcb = mempool_alloc(pool, GFP_ATOMIC);
else
qtcb = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache,
GFP_ATOMIC);
if (unlikely(!qtcb))
return NULL;
memset(qtcb, 0, sizeof(*qtcb));
qtcb->fsf_req.qtcb = &qtcb->qtcb;
qtcb->fsf_req.pool = pool;
return &qtcb->fsf_req;
}
static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter,
u32 fsf_cmd, int req_flags,
mempool_t *pool)
{ {
volatile struct qdio_buffer_element *sbale; volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req = NULL;
unsigned long lock_flags;
int retval = 0;
/* setup new FSF request */
retval = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND,
req_flags, adapter->pool.fsf_req_abort,
&lock_flags, &fsf_req);
if (retval < 0)
goto out;
if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED, struct zfcp_fsf_req *req;
&unit->status))) struct zfcp_qdio_queue *req_q = &adapter->req_q;
goto unit_blocked;
sbale = zfcp_qdio_sbale_req(fsf_req); if (req_flags & ZFCP_REQ_NO_QTCB)
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; req = zfcp_fsf_alloc_noqtcb(pool);
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; else
req = zfcp_fsf_alloc_qtcb(pool);
fsf_req->data = (unsigned long) unit; if (unlikely(!req))
return ERR_PTR(-EIO);
/* set handles of unit and its parent port in QTCB */ if (adapter->req_no == 0)
fsf_req->qtcb->header.lun_handle = unit->handle; adapter->req_no++;
fsf_req->qtcb->header.port_handle = unit->port->handle;
/* set handle of request which should be aborted */ INIT_LIST_HEAD(&req->list);
fsf_req->qtcb->bottom.support.req_handle = (u64) old_req_id; init_timer(&req->timer);
init_waitqueue_head(&req->completion_wq);
zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT); req->adapter = adapter;
retval = zfcp_fsf_req_send(fsf_req); req->fsf_command = fsf_cmd;
if (!retval) req->req_id = adapter->req_no++;
goto out; req->sbal_number = 1;
req->sbal_first = req_q->first;
req->sbal_last = req_q->first;
req->sbale_curr = 1;
sbale = zfcp_qdio_sbale_req(req);
sbale[0].addr = (void *) req->req_id;
sbale[0].flags |= SBAL_FLAGS0_COMMAND;
if (likely(req->qtcb)) {
req->qtcb->prefix.req_seq_no = req->adapter->fsf_req_seq_no;
req->qtcb->prefix.req_id = req->req_id;
req->qtcb->prefix.ulp_info = 26;
req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command];
req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
req->qtcb->header.req_handle = req->req_id;
req->qtcb->header.fsf_command = req->fsf_command;
req->seq_no = adapter->fsf_req_seq_no;
req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
sbale[1].addr = (void *) req->qtcb;
sbale[1].length = sizeof(struct fsf_qtcb);
}
if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) {
zfcp_fsf_req_free(req);
return ERR_PTR(-EIO);
}
unit_blocked: if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP))
zfcp_fsf_req_free(fsf_req); req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
fsf_req = NULL;
out: return req;
write_unlock_irqrestore(&adapter->req_q.lock, lock_flags);
return fsf_req;
} }
/* static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
* function: zfcp_fsf_abort_fcp_command_handler {
* struct zfcp_adapter *adapter = req->adapter;
* purpose: is called for finished Abort FCP Command request struct zfcp_qdio_queue *req_q = &adapter->req_q;
* int idx;
* returns:
/* put allocated FSF request into hash table */
spin_lock(&adapter->req_list_lock);
idx = zfcp_reqlist_hash(req->req_id);
list_add_tail(&req->list, &adapter->req_list[idx]);
spin_unlock(&adapter->req_list_lock);
req->issued = get_clock();
if (zfcp_qdio_send(req)) {
/* Queues are down..... */
del_timer(&req->timer);
spin_lock(&adapter->req_list_lock);
zfcp_reqlist_remove(adapter, req);
spin_unlock(&adapter->req_list_lock);
/* undo changes in request queue made for this request */
atomic_add(req->sbal_number, &req_q->count);
req_q->first -= req->sbal_number;
req_q->first += QDIO_MAX_BUFFERS_PER_Q;
req_q->first %= QDIO_MAX_BUFFERS_PER_Q; /* wrap */
zfcp_erp_adapter_reopen(adapter, 0, 116, req);
return -EIO;
}
/* Don't increase for unsolicited status */
if (req->qtcb)
adapter->fsf_req_seq_no++;
return 0;
}
/**
* zfcp_fsf_status_read - send status read request
* @adapter: pointer to struct zfcp_adapter
* @req_flags: request flags
* Returns: 0 on success, ERROR otherwise
*/ */
static int int zfcp_fsf_status_read(struct zfcp_adapter *adapter)
zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *new_fsf_req)
{ {
int retval = -EINVAL; struct zfcp_fsf_req *req;
struct zfcp_unit *unit; struct fsf_status_read_buffer *sr_buf;
union fsf_status_qual *fsf_stat_qual = volatile struct qdio_buffer_element *sbale;
&new_fsf_req->qtcb->header.fsf_status_qual; int retval = -EIO;
if (new_fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { spin_lock(&adapter->req_q.lock);
/* do not set ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED */ if (zfcp_fsf_req_sbal_get(adapter))
goto skip_fsfstatus; goto out;
req = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS,
ZFCP_REQ_NO_QTCB,
adapter->pool.fsf_req_status_read);
if (unlikely(IS_ERR(req))) {
retval = PTR_ERR(req);
goto out;
} }
unit = (struct zfcp_unit *) new_fsf_req->data; sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS;
sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY;
req->sbale_curr = 2;
sr_buf = mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC);
if (!sr_buf) {
retval = -ENOMEM;
goto failed_buf;
}
memset(sr_buf, 0, sizeof(*sr_buf));
req->data = sr_buf;
sbale = zfcp_qdio_sbale_curr(req);
sbale->addr = (void *) sr_buf;
sbale->length = sizeof(*sr_buf);
/* evaluate FSF status in QTCB */ retval = zfcp_fsf_req_send(req);
switch (new_fsf_req->qtcb->header.fsf_status) { if (retval)
goto failed_req_send;
goto out;
failed_req_send:
mempool_free(sr_buf, adapter->pool.data_status_read);
failed_buf:
zfcp_fsf_req_free(req);
zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL);
out:
spin_unlock(&adapter->req_q.lock);
return retval;
}
static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
{
struct zfcp_unit *unit = req->data;
union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
return;
switch (req->qtcb->header.fsf_status) {
case FSF_PORT_HANDLE_NOT_VALID: case FSF_PORT_HANDLE_NOT_VALID:
if (fsf_stat_qual->word[0] != fsf_stat_qual->word[1]) { if (fsq->word[0] == fsq->word[1]) {
/*
* In this case a command that was sent prior to a port
* reopen was aborted (handles are different). This is
* fine.
*/
} else {
/* Let's hope this sorts out the mess */
zfcp_erp_adapter_reopen(unit->port->adapter, 0, 104, zfcp_erp_adapter_reopen(unit->port->adapter, 0, 104,
new_fsf_req); req);
new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; req->status |= ZFCP_STATUS_FSFREQ_ERROR;
} }
break; break;
case FSF_LUN_HANDLE_NOT_VALID: case FSF_LUN_HANDLE_NOT_VALID:
if (fsf_stat_qual->word[0] != fsf_stat_qual->word[1]) { if (fsq->word[0] == fsq->word[1]) {
/* zfcp_erp_port_reopen(unit->port, 0, 105, req);
* In this case a command that was sent prior to a unit req->status |= ZFCP_STATUS_FSFREQ_ERROR;
* reopen was aborted (handles are different).
* This is fine.
*/
} else {
/* Let's hope this sorts out the mess */
zfcp_erp_port_reopen(unit->port, 0, 105, new_fsf_req);
new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
} }
break; break;
case FSF_FCP_COMMAND_DOES_NOT_EXIST: case FSF_FCP_COMMAND_DOES_NOT_EXIST:
retval = 0; req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
break; break;
case FSF_PORT_BOXED: case FSF_PORT_BOXED:
zfcp_erp_port_boxed(unit->port, 47, new_fsf_req); zfcp_erp_port_boxed(unit->port, 47, req);
new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR req->status |= ZFCP_STATUS_FSFREQ_ERROR |
| ZFCP_STATUS_FSFREQ_RETRY; ZFCP_STATUS_FSFREQ_RETRY;
break; break;
case FSF_LUN_BOXED: case FSF_LUN_BOXED:
zfcp_erp_unit_boxed(unit, 48, new_fsf_req); zfcp_erp_unit_boxed(unit, 48, req);
new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR req->status |= ZFCP_STATUS_FSFREQ_ERROR |
| ZFCP_STATUS_FSFREQ_RETRY; ZFCP_STATUS_FSFREQ_RETRY;
break; break;
case FSF_ADAPTER_STATUS_AVAILABLE: case FSF_ADAPTER_STATUS_AVAILABLE:
switch (new_fsf_req->qtcb->header.fsf_status_qual.word[0]) { switch (fsq->word[0]) {
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
zfcp_test_link(unit->port); zfcp_test_link(unit->port);
new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
/* SCSI stack will escalate */ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
} }
break; break;
case FSF_GOOD: case FSF_GOOD:
retval = 0; req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
break; break;
} }
skip_fsfstatus:
return retval;
} }
/** /**
* zfcp_use_one_sbal - checks whether req buffer and resp bother each fit into * zfcp_fsf_abort_fcp_command - abort running SCSI command
* one SBALE * @old_req_id: unsigned long
* Two scatter-gather lists are passed, one for the reqeust and one for the * @adapter: pointer to struct zfcp_adapter
* response. * @unit: pointer to struct zfcp_unit
* @req_flags: integer specifying the request flags
* Returns: pointer to struct zfcp_fsf_req
*
* FIXME(design): should be watched by a timeout !!!
*/ */
static inline int
zfcp_use_one_sbal(struct scatterlist *req, int req_count,
struct scatterlist *resp, int resp_count)
{
return ((req_count == 1) &&
(resp_count == 1) &&
(((unsigned long) zfcp_sg_to_address(&req[0]) &
PAGE_MASK) ==
((unsigned long) (zfcp_sg_to_address(&req[0]) +
req[0].length - 1) & PAGE_MASK)) &&
(((unsigned long) zfcp_sg_to_address(&resp[0]) &
PAGE_MASK) ==
((unsigned long) (zfcp_sg_to_address(&resp[0]) +
resp[0].length - 1) & PAGE_MASK)));
}
/** struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id,
* zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) struct zfcp_adapter *adapter,
* @ct: pointer to struct zfcp_send_ct which conatins all needed data for struct zfcp_unit *unit,
* the request int req_flags)
* @pool: pointer to memory pool, if non-null this pool is used to allocate
* a struct zfcp_fsf_req
* @erp_action: pointer to erp_action, if non-null the Generic Service request
* is sent within error recovery
*/
int
zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool,
struct zfcp_erp_action *erp_action)
{ {
volatile struct qdio_buffer_element *sbale; volatile struct qdio_buffer_element *sbale;
struct zfcp_port *port; struct zfcp_fsf_req *req = NULL;
struct zfcp_adapter *adapter;
struct zfcp_fsf_req *fsf_req;
unsigned long lock_flags;
int bytes;
int ret = 0;
port = ct->port;
adapter = port->adapter;
ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC,
ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
pool, &lock_flags, &fsf_req);
if (ret < 0)
goto failed_req;
sbale = zfcp_qdio_sbale_req(fsf_req);
if (zfcp_use_one_sbal(ct->req, ct->req_count,
ct->resp, ct->resp_count)){
/* both request buffer and response buffer
fit into one sbale each */
sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ;
sbale[2].addr = zfcp_sg_to_address(&ct->req[0]);
sbale[2].length = ct->req[0].length;
sbale[3].addr = zfcp_sg_to_address(&ct->resp[0]);
sbale[3].length = ct->resp[0].length;
sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY;
} else if (adapter->adapter_features &
FSF_FEATURE_ELS_CT_CHAINED_SBALS) {
/* try to use chained SBALs */
bytes = zfcp_qdio_sbals_from_sg(fsf_req,
SBAL_FLAGS0_TYPE_WRITE_READ,
ct->req,
ZFCP_MAX_SBALS_PER_CT_REQ);
if (bytes <= 0) {
if (bytes == 0)
ret = -ENOMEM;
else
ret = bytes;
goto failed_send;
}
fsf_req->qtcb->bottom.support.req_buf_length = bytes;
fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
bytes = zfcp_qdio_sbals_from_sg(fsf_req,
SBAL_FLAGS0_TYPE_WRITE_READ,
ct->resp,
ZFCP_MAX_SBALS_PER_CT_REQ);
if (bytes <= 0) {
if (bytes == 0)
ret = -ENOMEM;
else
ret = bytes;
goto failed_send;
}
fsf_req->qtcb->bottom.support.resp_buf_length = bytes;
} else {
/* reject send generic request */
ret = -EOPNOTSUPP;
goto failed_send;
}
/* settings in QTCB */
fsf_req->qtcb->header.port_handle = port->handle;
fsf_req->qtcb->bottom.support.service_class =
ZFCP_FC_SERVICE_CLASS_DEFAULT;
fsf_req->qtcb->bottom.support.timeout = ct->timeout;
fsf_req->data = (unsigned long) ct;
zfcp_san_dbf_event_ct_request(fsf_req);
if (erp_action) { spin_lock(&adapter->req_q.lock);
erp_action->fsf_req = fsf_req; if (!atomic_read(&adapter->req_q.count))
fsf_req->erp_action = erp_action; goto out;
zfcp_erp_start_timer(fsf_req); req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND,
} else req_flags, adapter->pool.fsf_req_abort);
zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); if (unlikely(IS_ERR(req)))
goto out;
ret = zfcp_fsf_req_send(fsf_req); if (unlikely(!(atomic_read(&unit->status) &
if (ret) ZFCP_STATUS_COMMON_UNBLOCKED)))
goto failed_send; goto out_error_free;
goto out; sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
failed_send: req->data = unit;
zfcp_fsf_req_free(fsf_req); req->handler = zfcp_fsf_abort_fcp_command_handler;
if (erp_action != NULL) { req->qtcb->header.lun_handle = unit->handle;
erp_action->fsf_req = NULL; req->qtcb->header.port_handle = unit->port->handle;
} req->qtcb->bottom.support.req_handle = (u64) old_req_id;
failed_req:
out: zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
write_unlock_irqrestore(&adapter->req_q.lock, lock_flags); if (!zfcp_fsf_req_send(req))
return ret; goto out;
out_error_free:
zfcp_fsf_req_free(req);
req = NULL;
out:
spin_unlock(&adapter->req_q.lock);
return req;
} }
/** static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
* zfcp_fsf_send_ct_handler - handler for Generic Service requests
* @fsf_req: pointer to struct zfcp_fsf_req
*
* Data specific for the Generic Service request is passed using
* fsf_req->data. There we find the pointer to struct zfcp_send_ct.
* Usually a specific handler for the CT request is called which is
* found in this structure.
*/
static int
zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *fsf_req)
{ {
struct zfcp_port *port; struct zfcp_adapter *adapter = req->adapter;
struct zfcp_adapter *adapter; struct zfcp_send_ct *send_ct = req->data;
struct zfcp_send_ct *send_ct; struct zfcp_port *port = send_ct->port;
struct fsf_qtcb_header *header; struct fsf_qtcb_header *header = &req->qtcb->header;
struct fsf_qtcb_bottom_support *bottom;
int retval = -EINVAL;
adapter = fsf_req->adapter; send_ct->status = -EINVAL;
send_ct = (struct zfcp_send_ct *) fsf_req->data;
port = send_ct->port;
header = &fsf_req->qtcb->header;
bottom = &fsf_req->qtcb->bottom.support;
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
goto skip_fsfstatus; goto skip_fsfstatus;
/* evaluate FSF status in QTCB */
switch (header->fsf_status) { switch (header->fsf_status) {
case FSF_GOOD: case FSF_GOOD:
zfcp_san_dbf_event_ct_response(fsf_req); zfcp_san_dbf_event_ct_response(req);
retval = 0; send_ct->status = 0;
break; break;
case FSF_SERVICE_CLASS_NOT_SUPPORTED: case FSF_SERVICE_CLASS_NOT_SUPPORTED:
zfcp_fsf_class_not_supp(fsf_req); zfcp_fsf_class_not_supp(req);
break; break;
case FSF_ADAPTER_STATUS_AVAILABLE: case FSF_ADAPTER_STATUS_AVAILABLE:
switch (header->fsf_status_qual.word[0]){ switch (header->fsf_status_qual.word[0]){
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
/* reopening link to port */
zfcp_test_link(port); zfcp_test_link(port);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
/* ERP strategy will escalate */ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
} }
break; break;
case FSF_ACCESS_DENIED: case FSF_ACCESS_DENIED:
zfcp_fsf_access_denied_port(fsf_req, port); zfcp_fsf_access_denied_port(req, port);
break;
case FSF_GENERIC_COMMAND_REJECTED:
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
case FSF_PORT_HANDLE_NOT_VALID:
zfcp_erp_adapter_reopen(adapter, 0, 106, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_PORT_BOXED: case FSF_PORT_BOXED:
zfcp_erp_port_boxed(port, 49, fsf_req); zfcp_erp_port_boxed(port, 49, req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR req->status |= ZFCP_STATUS_FSFREQ_ERROR |
| ZFCP_STATUS_FSFREQ_RETRY; ZFCP_STATUS_FSFREQ_RETRY;
break; break;
case FSF_PORT_HANDLE_NOT_VALID:
/* following states should never occure, all cases avoided zfcp_erp_adapter_reopen(adapter, 0, 106, req);
in zfcp_fsf_send_ct - but who knows ... */ case FSF_GENERIC_COMMAND_REJECTED:
case FSF_PAYLOAD_SIZE_MISMATCH: case FSF_PAYLOAD_SIZE_MISMATCH:
case FSF_REQUEST_SIZE_TOO_LARGE: case FSF_REQUEST_SIZE_TOO_LARGE:
case FSF_RESPONSE_SIZE_TOO_LARGE: case FSF_RESPONSE_SIZE_TOO_LARGE:
case FSF_SBAL_MISMATCH: case FSF_SBAL_MISMATCH:
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
default:
break; break;
} }
skip_fsfstatus: skip_fsfstatus:
send_ct->status = retval; if (send_ct->handler)
if (send_ct->handler != NULL)
send_ct->handler(send_ct->handler_data); send_ct->handler(send_ct->handler_data);
}
return retval; static int zfcp_fsf_setup_sbals(struct zfcp_fsf_req *req,
struct scatterlist *sg_req,
struct scatterlist *sg_resp, int max_sbals)
{
int bytes;
bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ,
sg_req, max_sbals);
if (bytes <= 0)
return -ENOMEM;
req->qtcb->bottom.support.req_buf_length = bytes;
req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ,
sg_resp, max_sbals);
if (bytes <= 0)
return -ENOMEM;
req->qtcb->bottom.support.resp_buf_length = bytes;
return 0;
} }
/** /**
* zfcp_fsf_send_els - initiate an ELS command (FC-FS) * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
* @els: pointer to struct zfcp_send_els which contains all needed data for * @ct: pointer to struct zfcp_send_ct with data for request
* the command. * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
* @erp_action: if non-null the Generic Service request sent within ERP
*/ */
int int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool,
zfcp_fsf_send_els(struct zfcp_send_els *els) struct zfcp_erp_action *erp_action)
{ {
volatile struct qdio_buffer_element *sbale; struct zfcp_port *port = ct->port;
struct zfcp_fsf_req *fsf_req; struct zfcp_adapter *adapter = port->adapter;
u32 d_id; struct zfcp_fsf_req *req;
struct zfcp_adapter *adapter; int ret = -EIO;
unsigned long lock_flags;
int bytes;
int ret = 0;
d_id = els->d_id; spin_lock(&adapter->req_q.lock);
adapter = els->adapter; if (zfcp_fsf_req_sbal_get(adapter))
goto out;
ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC,
ZFCP_REQ_AUTO_CLEANUP, ZFCP_REQ_AUTO_CLEANUP, pool);
NULL, &lock_flags, &fsf_req); if (unlikely(IS_ERR(req))) {
if (ret < 0) ret = PTR_ERR(req);
goto failed_req; goto out;
if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
&els->port->status))) {
ret = -EBUSY;
goto port_blocked;
} }
sbale = zfcp_qdio_sbale_req(fsf_req); ret = zfcp_fsf_setup_sbals(req, ct->req, ct->resp,
if (zfcp_use_one_sbal(els->req, els->req_count, FSF_MAX_SBALS_PER_REQ);
els->resp, els->resp_count)){
/* both request buffer and response buffer
fit into one sbale each */
sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ;
sbale[2].addr = zfcp_sg_to_address(&els->req[0]);
sbale[2].length = els->req[0].length;
sbale[3].addr = zfcp_sg_to_address(&els->resp[0]);
sbale[3].length = els->resp[0].length;
sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY;
} else if (adapter->adapter_features &
FSF_FEATURE_ELS_CT_CHAINED_SBALS) {
/* try to use chained SBALs */
bytes = zfcp_qdio_sbals_from_sg(fsf_req,
SBAL_FLAGS0_TYPE_WRITE_READ,
els->req,
ZFCP_MAX_SBALS_PER_ELS_REQ);
if (bytes <= 0) {
if (bytes == 0) {
ret = -ENOMEM;
} else {
ret = bytes;
}
goto failed_send;
}
fsf_req->qtcb->bottom.support.req_buf_length = bytes;
fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
bytes = zfcp_qdio_sbals_from_sg(fsf_req,
SBAL_FLAGS0_TYPE_WRITE_READ,
els->resp,
ZFCP_MAX_SBALS_PER_ELS_REQ);
if (bytes <= 0) {
if (bytes == 0) {
ret = -ENOMEM;
} else {
ret = bytes;
}
goto failed_send;
}
fsf_req->qtcb->bottom.support.resp_buf_length = bytes;
} else {
/* reject request */
ret = -EOPNOTSUPP;
goto failed_send;
}
/* settings in QTCB */
fsf_req->qtcb->bottom.support.d_id = d_id;
fsf_req->qtcb->bottom.support.service_class =
ZFCP_FC_SERVICE_CLASS_DEFAULT;
fsf_req->qtcb->bottom.support.timeout = ZFCP_ELS_TIMEOUT;
fsf_req->data = (unsigned long) els;
sbale = zfcp_qdio_sbale_req(fsf_req);
zfcp_san_dbf_event_els_request(fsf_req);
zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
ret = zfcp_fsf_req_send(fsf_req);
if (ret) if (ret)
goto failed_send; goto failed_send;
goto out; req->handler = zfcp_fsf_send_ct_handler;
req->qtcb->header.port_handle = port->handle;
req->qtcb->bottom.support.service_class = FSF_CLASS_3;
req->qtcb->bottom.support.timeout = ct->timeout;
req->data = ct;
zfcp_san_dbf_event_ct_request(req);
if (erp_action) {
erp_action->fsf_req = req;
req->erp_action = erp_action;
zfcp_erp_start_timer(req);
} else
zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
port_blocked: ret = zfcp_fsf_req_send(req);
failed_send: if (ret)
zfcp_fsf_req_free(fsf_req); goto failed_send;
failed_req: goto out;
out:
write_unlock_irqrestore(&adapter->req_q.lock, lock_flags);
return ret; failed_send:
zfcp_fsf_req_free(req);
if (erp_action)
erp_action->fsf_req = NULL;
out:
spin_unlock(&adapter->req_q.lock);
return ret;
} }
/** static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
* zfcp_fsf_send_els_handler - handler for ELS commands
* @fsf_req: pointer to struct zfcp_fsf_req
*
* Data specific for the ELS command is passed using
* fsf_req->data. There we find the pointer to struct zfcp_send_els.
* Usually a specific handler for the ELS command is called which is
* found in this structure.
*/
static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *fsf_req)
{ {
struct zfcp_adapter *adapter; struct zfcp_send_els *send_els = req->data;
struct zfcp_port *port; struct zfcp_port *port = send_els->port;
u32 d_id; struct fsf_qtcb_header *header = &req->qtcb->header;
struct fsf_qtcb_header *header;
struct fsf_qtcb_bottom_support *bottom;
struct zfcp_send_els *send_els;
int retval = -EINVAL;
send_els = (struct zfcp_send_els *) fsf_req->data; send_els->status = -EINVAL;
adapter = send_els->adapter;
port = send_els->port;
d_id = send_els->d_id;
header = &fsf_req->qtcb->header;
bottom = &fsf_req->qtcb->bottom.support;
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
goto skip_fsfstatus; goto skip_fsfstatus;
switch (header->fsf_status) { switch (header->fsf_status) {
case FSF_GOOD: case FSF_GOOD:
zfcp_san_dbf_event_els_response(fsf_req); zfcp_san_dbf_event_els_response(req);
retval = 0; send_els->status = 0;
break; break;
case FSF_SERVICE_CLASS_NOT_SUPPORTED: case FSF_SERVICE_CLASS_NOT_SUPPORTED:
zfcp_fsf_class_not_supp(fsf_req); zfcp_fsf_class_not_supp(req);
break; break;
case FSF_ADAPTER_STATUS_AVAILABLE: case FSF_ADAPTER_STATUS_AVAILABLE:
switch (header->fsf_status_qual.word[0]){ switch (header->fsf_status_qual.word[0]){
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
if (port && (send_els->ls_code != ZFCP_LS_ADISC)) if (port && (send_els->ls_code != ZFCP_LS_ADISC))
zfcp_test_link(port); zfcp_test_link(port);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; /*fall through */
break;
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_SQ_RETRY_IF_POSSIBLE: case FSF_SQ_RETRY_IF_POSSIBLE:
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
} }
break; break;
case FSF_ELS_COMMAND_REJECTED: case FSF_ELS_COMMAND_REJECTED:
case FSF_PAYLOAD_SIZE_MISMATCH: case FSF_PAYLOAD_SIZE_MISMATCH:
case FSF_REQUEST_SIZE_TOO_LARGE: case FSF_REQUEST_SIZE_TOO_LARGE:
case FSF_RESPONSE_SIZE_TOO_LARGE: case FSF_RESPONSE_SIZE_TOO_LARGE:
break; break;
case FSF_SBAL_MISMATCH:
/* should never occure, avoided in zfcp_fsf_send_els */
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_ACCESS_DENIED: case FSF_ACCESS_DENIED:
zfcp_fsf_access_denied_port(fsf_req, port); zfcp_fsf_access_denied_port(req, port);
break; break;
case FSF_SBAL_MISMATCH:
/* should never occure, avoided in zfcp_fsf_send_els */
/* fall through */
default: default:
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
} }
skip_fsfstatus: skip_fsfstatus:
send_els->status = retval;
if (send_els->handler) if (send_els->handler)
send_els->handler(send_els->handler_data); send_els->handler(send_els->handler_data);
}
return retval; /**
* zfcp_fsf_send_els - initiate an ELS command (FC-FS)
* @els: pointer to struct zfcp_send_els with data for the command
*/
int zfcp_fsf_send_els(struct zfcp_send_els *els)
{
struct zfcp_fsf_req *req;
struct zfcp_adapter *adapter = els->adapter;
struct fsf_qtcb_bottom_support *bottom;
int ret = -EIO;
if (unlikely(!(atomic_read(&els->port->status) &
ZFCP_STATUS_COMMON_UNBLOCKED)))
return -EBUSY;
spin_lock(&adapter->req_q.lock);
if (!atomic_read(&adapter->req_q.count))
goto out;
req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS,
ZFCP_REQ_AUTO_CLEANUP, NULL);
if (unlikely(IS_ERR(req))) {
ret = PTR_ERR(req);
goto out;
}
ret = zfcp_fsf_setup_sbals(req, els->req, els->resp,
FSF_MAX_SBALS_PER_ELS_REQ);
if (ret)
goto failed_send;
bottom = &req->qtcb->bottom.support;
req->handler = zfcp_fsf_send_els_handler;
bottom->d_id = els->d_id;
bottom->service_class = FSF_CLASS_3;
bottom->timeout = 2 * R_A_TOV;
req->data = els;
zfcp_san_dbf_event_els_request(req);
zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
ret = zfcp_fsf_req_send(req);
if (ret)
goto failed_send;
goto out;
failed_send:
zfcp_fsf_req_free(req);
out:
spin_unlock(&adapter->req_q.lock);
return ret;
} }
int int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
{ {
volatile struct qdio_buffer_element *sbale; volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req; struct zfcp_fsf_req *req;
struct zfcp_adapter *adapter = erp_action->adapter; struct zfcp_adapter *adapter = erp_action->adapter;
unsigned long lock_flags; int retval = -EIO;
int retval;
spin_lock(&adapter->req_q.lock);
/* setup new FSF request */ if (!atomic_read(&adapter->req_q.count))
retval = zfcp_fsf_req_create(adapter, goto out;
FSF_QTCB_EXCHANGE_CONFIG_DATA, req = zfcp_fsf_req_create(adapter,
ZFCP_REQ_AUTO_CLEANUP, FSF_QTCB_EXCHANGE_CONFIG_DATA,
adapter->pool.fsf_req_erp, ZFCP_REQ_AUTO_CLEANUP,
&lock_flags, &fsf_req); adapter->pool.fsf_req_erp);
if (retval) { if (unlikely(IS_ERR(req))) {
write_unlock_irqrestore(&adapter->req_q.lock, lock_flags); retval = PTR_ERR(req);
return retval; goto out;
} }
sbale = zfcp_qdio_sbale_req(fsf_req); sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
fsf_req->qtcb->bottom.config.feature_selection = req->qtcb->bottom.config.feature_selection =
FSF_FEATURE_CFDC | FSF_FEATURE_CFDC |
FSF_FEATURE_LUN_SHARING | FSF_FEATURE_LUN_SHARING |
FSF_FEATURE_NOTIFICATION_LOST | FSF_FEATURE_NOTIFICATION_LOST |
FSF_FEATURE_UPDATE_ALERT; FSF_FEATURE_UPDATE_ALERT;
fsf_req->erp_action = erp_action; req->erp_action = erp_action;
erp_action->fsf_req = fsf_req; req->handler = zfcp_fsf_exchange_config_data_handler;
erp_action->fsf_req = req;
zfcp_erp_start_timer(fsf_req); zfcp_erp_start_timer(req);
retval = zfcp_fsf_req_send(fsf_req); retval = zfcp_fsf_req_send(req);
write_unlock_irqrestore(&adapter->req_q.lock, lock_flags);
if (retval) { if (retval) {
zfcp_fsf_req_free(fsf_req); zfcp_fsf_req_free(req);
erp_action->fsf_req = NULL; erp_action->fsf_req = NULL;
} }
out:
spin_unlock(&adapter->req_q.lock);
return retval; return retval;
} }
int int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter,
zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, struct fsf_qtcb_bottom_config *data)
struct fsf_qtcb_bottom_config *data)
{ {
volatile struct qdio_buffer_element *sbale; volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req; struct zfcp_fsf_req *req = NULL;
unsigned long lock_flags; int retval = -EIO;
int retval;
spin_lock(&adapter->req_q.lock);
/* setup new FSF request */ if (zfcp_fsf_req_sbal_get(adapter))
retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA, goto out;
ZFCP_WAIT_FOR_SBAL, NULL, &lock_flags,
&fsf_req); req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA,
if (retval) { 0, NULL);
write_unlock_irqrestore(&adapter->req_q.lock, lock_flags); if (unlikely(IS_ERR(req))) {
return retval; retval = PTR_ERR(req);
goto out;
} }
sbale = zfcp_qdio_sbale_req(fsf_req); sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
req->handler = zfcp_fsf_exchange_config_data_handler;
fsf_req->qtcb->bottom.config.feature_selection = req->qtcb->bottom.config.feature_selection =
FSF_FEATURE_CFDC | FSF_FEATURE_CFDC |
FSF_FEATURE_LUN_SHARING | FSF_FEATURE_LUN_SHARING |
FSF_FEATURE_NOTIFICATION_LOST | FSF_FEATURE_NOTIFICATION_LOST |
FSF_FEATURE_UPDATE_ALERT; FSF_FEATURE_UPDATE_ALERT;
if (data) if (data)
fsf_req->data = (unsigned long) data; req->data = data;
zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
retval = zfcp_fsf_req_send(fsf_req); retval = zfcp_fsf_req_send(req);
write_unlock_irqrestore(&adapter->req_q.lock, lock_flags); out:
spin_unlock(&adapter->req_q.lock);
if (!retval) if (!retval)
wait_event(fsf_req->completion_wq, wait_event(req->completion_wq,
fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
zfcp_fsf_req_free(fsf_req); zfcp_fsf_req_free(req);
return retval; return retval;
} }
/**
* zfcp_fsf_exchange_config_evaluate
* @fsf_req: fsf_req which belongs to xchg config data request
* @xchg_ok: specifies if xchg config data was incomplete or complete (0/1)
*
* returns: -EIO on error, 0 otherwise
*/
static int
zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok)
{
struct fsf_qtcb_bottom_config *bottom;
struct zfcp_adapter *adapter = fsf_req->adapter;
struct Scsi_Host *shost = adapter->scsi_host;
bottom = &fsf_req->qtcb->bottom.config;
adapter->fsf_lic_version = bottom->lic_version;
adapter->adapter_features = bottom->adapter_features;
adapter->connection_features = bottom->connection_features;
adapter->peer_wwpn = 0;
adapter->peer_wwnn = 0;
adapter->peer_d_id = 0;
if (xchg_ok) {
if (fsf_req->data)
memcpy((struct fsf_qtcb_bottom_config *) fsf_req->data,
bottom, sizeof (struct fsf_qtcb_bottom_config));
fc_host_node_name(shost) = bottom->nport_serv_param.wwnn;
fc_host_port_name(shost) = bottom->nport_serv_param.wwpn;
fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK;
fc_host_speed(shost) = bottom->fc_link_speed;
fc_host_supported_classes(shost) =
FC_COS_CLASS2 | FC_COS_CLASS3;
adapter->hydra_version = bottom->adapter_type;
adapter->timer_ticks = bottom->timer_interval;
if (fc_host_permanent_port_name(shost) == -1)
fc_host_permanent_port_name(shost) =
fc_host_port_name(shost);
if (bottom->fc_topology == FSF_TOPO_P2P) {
adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK;
adapter->peer_wwpn = bottom->plogi_payload.wwpn;
adapter->peer_wwnn = bottom->plogi_payload.wwnn;
fc_host_port_type(shost) = FC_PORTTYPE_PTP;
} else if (bottom->fc_topology == FSF_TOPO_FABRIC)
fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
else if (bottom->fc_topology == FSF_TOPO_AL)
fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
else
fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
} else {
fc_host_node_name(shost) = 0;
fc_host_port_name(shost) = 0;
fc_host_port_id(shost) = 0;
fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
adapter->hydra_version = 0;
}
if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
adapter->hardware_version = bottom->hardware_version;
memcpy(fc_host_serial_number(shost), bottom->serial_number,
min(FC_SERIAL_NUMBER_SIZE, 17));
EBCASC(fc_host_serial_number(shost),
min(FC_SERIAL_NUMBER_SIZE, 17));
}
if (ZFCP_QTCB_VERSION < bottom->low_qtcb_version) {
dev_err(&adapter->ccw_device->dev,
"The adapter only supports newer control block "
"versions, try updated device driver.\n");
zfcp_erp_adapter_shutdown(adapter, 0, 125, fsf_req);
return -EIO;
}
if (ZFCP_QTCB_VERSION > bottom->high_qtcb_version) {
dev_err(&adapter->ccw_device->dev,
"The adapter only supports older control block "
"versions, consider a microcode upgrade.\n");
zfcp_erp_adapter_shutdown(adapter, 0, 126, fsf_req);
return -EIO;
}
return 0;
}
/**
* function: zfcp_fsf_exchange_config_data_handler
*
* purpose: is called for finished Exchange Configuration Data command
*
* returns:
*/
static int
zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *fsf_req)
{
struct fsf_qtcb_bottom_config *bottom;
struct zfcp_adapter *adapter = fsf_req->adapter;
struct fsf_qtcb *qtcb = fsf_req->qtcb;
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
return -EIO;
switch (qtcb->header.fsf_status) {
case FSF_GOOD:
if (zfcp_fsf_exchange_config_evaluate(fsf_req, 1))
return -EIO;
switch (fc_host_port_type(adapter->scsi_host)) {
case FC_PORTTYPE_PTP:
if (fsf_req->erp_action)
dev_info(&adapter->ccw_device->dev,
"Point-to-Point fibrechannel "
"configuration detected.\n");
break;
case FC_PORTTYPE_NLPORT:
dev_err(&adapter->ccw_device->dev,
"Unsupported arbitrated loop fibrechannel "
"topology detected, shutting down adapter\n");
zfcp_erp_adapter_shutdown(adapter, 0, 127, fsf_req);
return -EIO;
case FC_PORTTYPE_NPORT:
if (fsf_req->erp_action)
dev_info(&adapter->ccw_device->dev,
"Switched fabric fibrechannel "
"network detected.\n");
break;
default:
dev_err(&adapter->ccw_device->dev,
"The fibrechannel topology reported by the "
"adapter is not known by the zfcp driver, "
"shutting down adapter.\n");
zfcp_erp_adapter_shutdown(adapter, 0, 128, fsf_req);
return -EIO;
}
bottom = &qtcb->bottom.config;
if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
dev_err(&adapter->ccw_device->dev,
"Maximum QTCB size (%d bytes) allowed by "
"the adapter is lower than the minimum "
"required by the driver (%ld bytes).\n",
bottom->max_qtcb_size, sizeof(struct fsf_qtcb));
zfcp_erp_adapter_shutdown(adapter, 0, 129, fsf_req);
return -EIO;
}
atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
&adapter->status);
break;
case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
if (zfcp_fsf_exchange_config_evaluate(fsf_req, 0))
return -EIO;
atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
&adapter->status);
zfcp_fsf_link_down_info_eval(fsf_req, 42,
&qtcb->header.fsf_status_qual.link_down_info);
break;
default:
zfcp_erp_adapter_shutdown(adapter, 0, 130, fsf_req);
return -EIO;
}
return 0;
}
/** /**
* zfcp_fsf_exchange_port_data - request information about local port * zfcp_fsf_exchange_port_data - request information about local port
* @erp_action: ERP action for the adapter for which port data is requested * @erp_action: ERP action for the adapter for which port data is requested
* Returns: 0 on success, error otherwise
*/ */
int int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
{ {
volatile struct qdio_buffer_element *sbale; volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req; struct zfcp_fsf_req *req;
struct zfcp_adapter *adapter = erp_action->adapter; struct zfcp_adapter *adapter = erp_action->adapter;
unsigned long lock_flags; int retval = -EIO;
int retval;
if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
return -EOPNOTSUPP; return -EOPNOTSUPP;
/* setup new FSF request */ spin_lock(&adapter->req_q.lock);
retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, if (!atomic_read(&adapter->req_q.count))
ZFCP_REQ_AUTO_CLEANUP, goto out;
adapter->pool.fsf_req_erp, req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA,
&lock_flags, &fsf_req); ZFCP_REQ_AUTO_CLEANUP,
if (retval) { adapter->pool.fsf_req_erp);
write_unlock_irqrestore(&adapter->req_q.lock, lock_flags); if (unlikely(IS_ERR(req))) {
return retval; retval = PTR_ERR(req);
goto out;
} }
sbale = zfcp_qdio_sbale_req(fsf_req); sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
erp_action->fsf_req = fsf_req; req->handler = zfcp_fsf_exchange_port_data_handler;
fsf_req->erp_action = erp_action; req->erp_action = erp_action;
zfcp_erp_start_timer(fsf_req); erp_action->fsf_req = req;
retval = zfcp_fsf_req_send(fsf_req);
write_unlock_irqrestore(&adapter->req_q.lock, lock_flags);
zfcp_erp_start_timer(req);
retval = zfcp_fsf_req_send(req);
if (retval) { if (retval) {
zfcp_fsf_req_free(fsf_req); zfcp_fsf_req_free(req);
erp_action->fsf_req = NULL; erp_action->fsf_req = NULL;
} }
out:
spin_unlock(&adapter->req_q.lock);
return retval; return retval;
} }
/** /**
* zfcp_fsf_exchange_port_data_sync - request information about local port * zfcp_fsf_exchange_port_data_sync - request information about local port
* and wait until information is ready * @adapter: pointer to struct zfcp_adapter
* @data: pointer to struct fsf_qtcb_bottom_port
* Returns: 0 on success, error otherwise
*/ */
int int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter,
zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, struct fsf_qtcb_bottom_port *data)
struct fsf_qtcb_bottom_port *data)
{ {
volatile struct qdio_buffer_element *sbale; volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req; struct zfcp_fsf_req *req = NULL;
unsigned long lock_flags; int retval = -EIO;
int retval;
if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
return -EOPNOTSUPP; return -EOPNOTSUPP;
/* setup new FSF request */ spin_lock(&adapter->req_q.lock);
retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, if (!atomic_read(&adapter->req_q.count))
0, NULL, &lock_flags, &fsf_req); goto out;
if (retval) {
write_unlock_irqrestore(&adapter->req_q.lock, lock_flags); req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0,
return retval; NULL);
if (unlikely(IS_ERR(req))) {
retval = PTR_ERR(req);
goto out;
} }
if (data) if (data)
fsf_req->data = (unsigned long) data; req->data = data;
sbale = zfcp_qdio_sbale_req(fsf_req); sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); req->handler = zfcp_fsf_exchange_port_data_handler;
retval = zfcp_fsf_req_send(fsf_req); zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
write_unlock_irqrestore(&adapter->req_q.lock, lock_flags); retval = zfcp_fsf_req_send(req);
out:
spin_unlock(&adapter->req_q.lock);
if (!retval) if (!retval)
wait_event(fsf_req->completion_wq, wait_event(req->completion_wq,
fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
zfcp_fsf_req_free(req);
zfcp_fsf_req_free(fsf_req);
return retval;
}
/**
* zfcp_fsf_exchange_port_evaluate
* @fsf_req: fsf_req which belongs to xchg port data request
* @xchg_ok: specifies if xchg port data was incomplete or complete (0/1)
*/
static void
zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok)
{
struct zfcp_adapter *adapter;
struct fsf_qtcb_bottom_port *bottom;
struct Scsi_Host *shost;
adapter = fsf_req->adapter;
bottom = &fsf_req->qtcb->bottom.port;
shost = adapter->scsi_host;
if (fsf_req->data)
memcpy((struct fsf_qtcb_bottom_port*) fsf_req->data, bottom,
sizeof(struct fsf_qtcb_bottom_port));
if (adapter->connection_features & FSF_FEATURE_NPIV_MODE)
fc_host_permanent_port_name(shost) = bottom->wwpn;
else
fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
fc_host_supported_speeds(shost) = bottom->supported_speed;
}
/**
* zfcp_fsf_exchange_port_data_handler - handler for exchange_port_data request
* @fsf_req: pointer to struct zfcp_fsf_req
*/
static void
zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *fsf_req)
{
struct zfcp_adapter *adapter;
struct fsf_qtcb *qtcb;
adapter = fsf_req->adapter;
qtcb = fsf_req->qtcb;
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
return;
switch (qtcb->header.fsf_status) {
case FSF_GOOD:
zfcp_fsf_exchange_port_evaluate(fsf_req, 1);
atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status);
break;
case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
zfcp_fsf_exchange_port_evaluate(fsf_req, 0);
atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status);
zfcp_fsf_link_down_info_eval(fsf_req, 43,
&qtcb->header.fsf_status_qual.link_down_info);
break;
}
}
/*
* function: zfcp_fsf_open_port
*
* purpose:
*
* returns: address of initiated FSF request
* NULL - request could not be initiated
*/
int
zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
{
volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req;
unsigned long lock_flags;
int retval = 0;
/* setup new FSF request */
retval = zfcp_fsf_req_create(erp_action->adapter,
FSF_QTCB_OPEN_PORT_WITH_DID,
ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
erp_action->adapter->pool.fsf_req_erp,
&lock_flags, &fsf_req);
if (retval < 0)
goto out;
sbale = zfcp_qdio_sbale_req(fsf_req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
fsf_req->qtcb->bottom.support.d_id = erp_action->port->d_id;
atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->port->status);
fsf_req->data = (unsigned long) erp_action->port;
fsf_req->erp_action = erp_action;
erp_action->fsf_req = fsf_req;
zfcp_erp_start_timer(fsf_req);
retval = zfcp_fsf_req_send(fsf_req);
if (retval) {
zfcp_fsf_req_free(fsf_req);
erp_action->fsf_req = NULL;
goto out;
}
out:
write_unlock_irqrestore(&erp_action->adapter->req_q.lock, lock_flags);
return retval; return retval;
} }
/* static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
* function: zfcp_fsf_open_port_handler
*
* purpose: is called for finished Open Port command
*
* returns:
*/
static int
zfcp_fsf_open_port_handler(struct zfcp_fsf_req *fsf_req)
{ {
int retval = -EINVAL; struct zfcp_port *port = req->data;
struct zfcp_port *port; struct fsf_qtcb_header *header = &req->qtcb->header;
struct fsf_plogi *plogi; struct fsf_plogi *plogi;
struct fsf_qtcb_header *header;
port = (struct zfcp_port *) fsf_req->data; if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
header = &fsf_req->qtcb->header;
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
/* don't change port status in our bookkeeping */
goto skip_fsfstatus; goto skip_fsfstatus;
}
/* evaluate FSF status in QTCB */
switch (header->fsf_status) { switch (header->fsf_status) {
case FSF_PORT_ALREADY_OPEN: case FSF_PORT_ALREADY_OPEN:
/*
* This is a bug, however operation should continue normally
* if it is simply ignored
*/
break; break;
case FSF_ACCESS_DENIED: case FSF_ACCESS_DENIED:
zfcp_fsf_access_denied_port(fsf_req, port); zfcp_fsf_access_denied_port(req, port);
break; break;
case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
dev_warn(&fsf_req->adapter->ccw_device->dev, dev_warn(&req->adapter->ccw_device->dev,
"The adapter is out of resources. The remote port " "The adapter is out of resources. The remote port "
"0x%016Lx could not be opened, disabling it.\n", "0x%016Lx could not be opened, disabling it.\n",
port->wwpn); port->wwpn);
zfcp_erp_port_failed(port, 31, fsf_req); zfcp_erp_port_failed(port, 31, req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
case FSF_ADAPTER_STATUS_AVAILABLE: case FSF_ADAPTER_STATUS_AVAILABLE:
switch (header->fsf_status_qual.word[0]) { switch (header->fsf_status_qual.word[0]) {
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
/* ERP strategy will escalate */
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
/* ERP strategy will escalate */ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
case FSF_SQ_NO_RETRY_POSSIBLE: case FSF_SQ_NO_RETRY_POSSIBLE:
dev_warn(&fsf_req->adapter->ccw_device->dev, dev_warn(&req->adapter->ccw_device->dev,
"The remote port 0x%016Lx could not be " "The remote port 0x%016Lx could not be "
"opened. Disabling it.\n", port->wwpn); "opened. Disabling it.\n", port->wwpn);
zfcp_erp_port_failed(port, 32, fsf_req); zfcp_erp_port_failed(port, 32, req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
default:
break; break;
} }
break; break;
case FSF_GOOD: case FSF_GOOD:
/* save port handle assigned by FSF */
port->handle = header->port_handle; port->handle = header->port_handle;
/* mark port as open */
atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
ZFCP_STATUS_COMMON_ACCESS_BOXED, ZFCP_STATUS_COMMON_ACCESS_BOXED,
&port->status); &port->status);
retval = 0;
/* check whether D_ID has changed during open */ /* check whether D_ID has changed during open */
/* /*
* FIXME: This check is not airtight, as the FCP channel does * FIXME: This check is not airtight, as the FCP channel does
...@@ -2021,227 +1471,168 @@ zfcp_fsf_open_port_handler(struct zfcp_fsf_req *fsf_req) ...@@ -2021,227 +1471,168 @@ zfcp_fsf_open_port_handler(struct zfcp_fsf_req *fsf_req)
* another GID_PN straight after a port has been opened. * another GID_PN straight after a port has been opened.
* Alternately, an ADISC/PDISC ELS should suffice, as well. * Alternately, an ADISC/PDISC ELS should suffice, as well.
*/ */
plogi = (struct fsf_plogi *) fsf_req->qtcb->bottom.support.els; if (atomic_read(&port->status) & ZFCP_STATUS_PORT_NO_WWPN)
if (!atomic_test_mask(ZFCP_STATUS_PORT_NO_WWPN, &port->status)) break;
{
if (fsf_req->qtcb->bottom.support.els1_length < plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els;
sizeof (struct fsf_plogi)) { if (req->qtcb->bottom.support.els1_length >= sizeof(*plogi)) {
/* skip sanity check and assume wwpn is ok */ if (plogi->serv_param.wwpn != port->wwpn)
} else { atomic_clear_mask(ZFCP_STATUS_PORT_DID_DID,
if (plogi->serv_param.wwpn != port->wwpn) { &port->status);
atomic_clear_mask( else {
ZFCP_STATUS_PORT_DID_DID, port->wwnn = plogi->serv_param.wwnn;
&port->status); zfcp_fc_plogi_evaluate(port, plogi);
} else {
port->wwnn = plogi->serv_param.wwnn;
zfcp_fc_plogi_evaluate(port, plogi);
}
} }
} }
break; break;
case FSF_UNKNOWN_OP_SUBTYPE: case FSF_UNKNOWN_OP_SUBTYPE:
/* should never occure, subtype not set in zfcp_fsf_open_port */ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
default:
break; break;
} }
skip_fsfstatus: skip_fsfstatus:
atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &port->status); atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &port->status);
return retval;
} }
/* /**
* function: zfcp_fsf_close_port * zfcp_fsf_open_port - create and send open port request
* * @erp_action: pointer to struct zfcp_erp_action
* purpose: submit FSF command "close port" * Returns: 0 on success, error otherwise
*
* returns: address of initiated FSF request
* NULL - request could not be initiated
*/ */
int int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
{ {
volatile struct qdio_buffer_element *sbale; volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req; struct zfcp_adapter *adapter = erp_action->adapter;
unsigned long lock_flags; struct zfcp_fsf_req *req;
int retval = 0; int retval = -EIO;
/* setup new FSF request */ spin_lock(&adapter->req_q.lock);
retval = zfcp_fsf_req_create(erp_action->adapter, if (zfcp_fsf_req_sbal_get(adapter))
FSF_QTCB_CLOSE_PORT, goto out;
ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
erp_action->adapter->pool.fsf_req_erp, req = zfcp_fsf_req_create(adapter,
&lock_flags, &fsf_req); FSF_QTCB_OPEN_PORT_WITH_DID,
if (retval < 0) ZFCP_REQ_AUTO_CLEANUP,
adapter->pool.fsf_req_erp);
if (unlikely(IS_ERR(req))) {
retval = PTR_ERR(req);
goto out; goto out;
}
sbale = zfcp_qdio_sbale_req(fsf_req); sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->port->status); req->handler = zfcp_fsf_open_port_handler;
fsf_req->data = (unsigned long) erp_action->port; req->qtcb->bottom.support.d_id = erp_action->port->d_id;
fsf_req->erp_action = erp_action; req->data = erp_action->port;
fsf_req->qtcb->header.port_handle = erp_action->port->handle; req->erp_action = erp_action;
fsf_req->erp_action = erp_action; erp_action->fsf_req = req;
erp_action->fsf_req = fsf_req; atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->port->status);
zfcp_erp_start_timer(fsf_req); zfcp_erp_start_timer(req);
retval = zfcp_fsf_req_send(fsf_req); retval = zfcp_fsf_req_send(req);
if (retval) { if (retval) {
zfcp_fsf_req_free(fsf_req); zfcp_fsf_req_free(req);
erp_action->fsf_req = NULL; erp_action->fsf_req = NULL;
goto out;
} }
out:
out: spin_unlock(&adapter->req_q.lock);
write_unlock_irqrestore(&erp_action->adapter->req_q.lock, lock_flags);
return retval; return retval;
} }
/* static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
* function: zfcp_fsf_close_port_handler
*
* purpose: is called for finished Close Port FSF command
*
* returns:
*/
static int
zfcp_fsf_close_port_handler(struct zfcp_fsf_req *fsf_req)
{ {
int retval = -EINVAL; struct zfcp_port *port = req->data;
struct zfcp_port *port;
port = (struct zfcp_port *) fsf_req->data;
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
/* don't change port status in our bookkeeping */
goto skip_fsfstatus; goto skip_fsfstatus;
}
/* evaluate FSF status in QTCB */
switch (fsf_req->qtcb->header.fsf_status) {
switch (req->qtcb->header.fsf_status) {
case FSF_PORT_HANDLE_NOT_VALID: case FSF_PORT_HANDLE_NOT_VALID:
zfcp_erp_adapter_reopen(port->adapter, 0, 107, fsf_req); zfcp_erp_adapter_reopen(port->adapter, 0, 107, req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
case FSF_ADAPTER_STATUS_AVAILABLE: case FSF_ADAPTER_STATUS_AVAILABLE:
/* Note: FSF has actually closed the port in this case.
* The status code is just daft. Fingers crossed for a change
*/
retval = 0;
break; break;
case FSF_GOOD: case FSF_GOOD:
zfcp_erp_modify_port_status(port, 33, fsf_req, zfcp_erp_modify_port_status(port, 33, req,
ZFCP_STATUS_COMMON_OPEN, ZFCP_STATUS_COMMON_OPEN,
ZFCP_CLEAR); ZFCP_CLEAR);
retval = 0;
break; break;
} }
skip_fsfstatus: skip_fsfstatus:
atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &port->status); atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &port->status);
return retval;
} }
/* /**
* function: zfcp_fsf_close_physical_port * zfcp_fsf_close_port - create and send close port request
* * @erp_action: pointer to struct zfcp_erp_action
* purpose: submit FSF command "close physical port" * Returns: 0 on success, error otherwise
*
* returns: address of initiated FSF request
* NULL - request could not be initiated
*/ */
int int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
{ {
volatile struct qdio_buffer_element *sbale; volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req; struct zfcp_adapter *adapter = erp_action->adapter;
unsigned long lock_flags; struct zfcp_fsf_req *req;
int retval = 0; int retval = -EIO;
/* setup new FSF request */ spin_lock(&adapter->req_q.lock);
retval = zfcp_fsf_req_create(erp_action->adapter, if (zfcp_fsf_req_sbal_get(adapter))
FSF_QTCB_CLOSE_PHYSICAL_PORT, goto out;
ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
erp_action->adapter->pool.fsf_req_erp, req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT,
&lock_flags, &fsf_req); ZFCP_REQ_AUTO_CLEANUP,
if (retval < 0) adapter->pool.fsf_req_erp);
if (unlikely(IS_ERR(req))) {
retval = PTR_ERR(req);
goto out; goto out;
}
sbale = zfcp_qdio_sbale_req(fsf_req); sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
/* mark port as being closed */ req->handler = zfcp_fsf_close_port_handler;
atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, req->data = erp_action->port;
&erp_action->port->status); req->erp_action = erp_action;
/* save a pointer to this port */ req->qtcb->header.port_handle = erp_action->port->handle;
fsf_req->data = (unsigned long) erp_action->port; erp_action->fsf_req = req;
fsf_req->qtcb->header.port_handle = erp_action->port->handle; atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->port->status);
fsf_req->erp_action = erp_action;
erp_action->fsf_req = fsf_req; zfcp_erp_start_timer(req);
retval = zfcp_fsf_req_send(req);
zfcp_erp_start_timer(fsf_req);
retval = zfcp_fsf_req_send(fsf_req);
if (retval) { if (retval) {
zfcp_fsf_req_free(fsf_req); zfcp_fsf_req_free(req);
erp_action->fsf_req = NULL; erp_action->fsf_req = NULL;
goto out;
} }
out:
out: spin_unlock(&adapter->req_q.lock);
write_unlock_irqrestore(&erp_action->adapter->req_q.lock, lock_flags);
return retval; return retval;
} }
/* static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
* function: zfcp_fsf_close_physical_port_handler
*
* purpose: is called for finished Close Physical Port FSF command
*
* returns:
*/
static int
zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *fsf_req)
{ {
int retval = -EINVAL; struct zfcp_port *port = req->data;
struct zfcp_port *port; struct fsf_qtcb_header *header = &req->qtcb->header;
struct zfcp_unit *unit; struct zfcp_unit *unit;
struct fsf_qtcb_header *header;
port = (struct zfcp_port *) fsf_req->data;
header = &fsf_req->qtcb->header;
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
/* don't change port status in our bookkeeping */
goto skip_fsfstatus; goto skip_fsfstatus;
}
/* evaluate FSF status in QTCB */
switch (header->fsf_status) { switch (header->fsf_status) {
case FSF_PORT_HANDLE_NOT_VALID: case FSF_PORT_HANDLE_NOT_VALID:
zfcp_erp_adapter_reopen(port->adapter, 0, 108, fsf_req); zfcp_erp_adapter_reopen(port->adapter, 0, 108, req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
case FSF_ACCESS_DENIED: case FSF_ACCESS_DENIED:
zfcp_fsf_access_denied_port(fsf_req, port); zfcp_fsf_access_denied_port(req, port);
break; break;
case FSF_PORT_BOXED: case FSF_PORT_BOXED:
zfcp_erp_port_boxed(port, 50, fsf_req); zfcp_erp_port_boxed(port, 50, req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | req->status |= ZFCP_STATUS_FSFREQ_ERROR |
ZFCP_STATUS_FSFREQ_RETRY; ZFCP_STATUS_FSFREQ_RETRY;
/* can't use generic zfcp_erp_modify_port_status because /* can't use generic zfcp_erp_modify_port_status because
* ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
...@@ -2249,120 +1640,88 @@ zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *fsf_req) ...@@ -2249,120 +1640,88 @@ zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *fsf_req)
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
&unit->status); &unit->status);
break; break;
case FSF_ADAPTER_STATUS_AVAILABLE: case FSF_ADAPTER_STATUS_AVAILABLE:
switch (header->fsf_status_qual.word[0]) { switch (header->fsf_status_qual.word[0]) {
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
/* This will now be escalated by ERP */ /* fall through */
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
/* ERP strategy will escalate */ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
} }
break; break;
case FSF_GOOD: case FSF_GOOD:
/* can't use generic zfcp_erp_modify_port_status because /* can't use generic zfcp_erp_modify_port_status because
* ZFCP_STATUS_COMMON_OPEN must not be reset for the port * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
*/ */
atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
list_for_each_entry(unit, &port->unit_list_head, list) list_for_each_entry(unit, &port->unit_list_head, list)
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
retval = 0; &unit->status);
break; break;
} }
skip_fsfstatus:
skip_fsfstatus:
atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, &port->status); atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, &port->status);
return retval;
} }
/* /**
* function: zfcp_fsf_open_unit * zfcp_fsf_close_physical_port - close physical port
* * @erp_action: pointer to struct zfcp_erp_action
* purpose: * Returns: 0 on success
*
* returns:
*
* assumptions: This routine does not check whether the associated
* remote port has already been opened. This should be
* done by calling routines. Otherwise some status
* may be presented by FSF
*/ */
int int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
{ {
volatile struct qdio_buffer_element *sbale; volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req; struct zfcp_adapter *adapter = erp_action->adapter;
unsigned long lock_flags; struct zfcp_fsf_req *req;
int retval = 0; int retval = -EIO;
/* setup new FSF request */ spin_lock(&adapter->req_q.lock);
retval = zfcp_fsf_req_create(erp_action->adapter, if (zfcp_fsf_req_sbal_get(adapter))
FSF_QTCB_OPEN_LUN,
ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
erp_action->adapter->pool.fsf_req_erp,
&lock_flags, &fsf_req);
if (retval < 0)
goto out; goto out;
sbale = zfcp_qdio_sbale_req(fsf_req); req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PHYSICAL_PORT,
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; ZFCP_REQ_AUTO_CLEANUP,
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; adapter->pool.fsf_req_erp);
if (unlikely(IS_ERR(req))) {
retval = PTR_ERR(req);
goto out;
}
fsf_req->qtcb->header.port_handle = erp_action->port->handle; sbale = zfcp_qdio_sbale_req(req);
fsf_req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun; sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
if (!(erp_action->adapter->connection_features & FSF_FEATURE_NPIV_MODE)) sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
fsf_req->qtcb->bottom.support.option =
FSF_OPEN_LUN_SUPPRESS_BOXING;
atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->unit->status);
fsf_req->data = (unsigned long) erp_action->unit;
fsf_req->erp_action = erp_action;
erp_action->fsf_req = fsf_req;
zfcp_erp_start_timer(fsf_req); req->data = erp_action->port;
retval = zfcp_fsf_req_send(erp_action->fsf_req); req->qtcb->header.port_handle = erp_action->port->handle;
req->erp_action = erp_action;
req->handler = zfcp_fsf_close_physical_port_handler;
erp_action->fsf_req = req;
atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING,
&erp_action->port->status);
zfcp_erp_start_timer(req);
retval = zfcp_fsf_req_send(req);
if (retval) { if (retval) {
zfcp_fsf_req_free(fsf_req); zfcp_fsf_req_free(req);
erp_action->fsf_req = NULL; erp_action->fsf_req = NULL;
goto out;
} }
out: out:
write_unlock_irqrestore(&erp_action->adapter->req_q.lock, lock_flags); spin_unlock(&adapter->req_q.lock);
return retval; return retval;
} }
/* static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req)
* function: zfcp_fsf_open_unit_handler
*
* purpose: is called for finished Open LUN command
*
* returns:
*/
static int
zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *fsf_req)
{ {
int retval = -EINVAL; struct zfcp_adapter *adapter = req->adapter;
struct zfcp_adapter *adapter; struct zfcp_unit *unit = req->data;
struct zfcp_unit *unit; struct fsf_qtcb_header *header = &req->qtcb->header;
struct fsf_qtcb_header *header; struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
struct fsf_qtcb_bottom_support *bottom; struct fsf_queue_designator *queue_designator =
struct fsf_queue_designator *queue_designator; &header->fsf_status_qual.fsf_queue_designator;
int exclusive, readwrite; int exclusive, readwrite;
unit = (struct zfcp_unit *) fsf_req->data; if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
/* don't change unit status in our bookkeeping */
goto skip_fsfstatus; goto skip_fsfstatus;
}
adapter = fsf_req->adapter;
header = &fsf_req->qtcb->header;
bottom = &fsf_req->qtcb->bottom.support;
queue_designator = &header->fsf_status_qual.fsf_queue_designator;
atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
ZFCP_STATUS_COMMON_ACCESS_BOXED | ZFCP_STATUS_COMMON_ACCESS_BOXED |
...@@ -2370,32 +1729,25 @@ zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *fsf_req) ...@@ -2370,32 +1729,25 @@ zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *fsf_req)
ZFCP_STATUS_UNIT_READONLY, ZFCP_STATUS_UNIT_READONLY,
&unit->status); &unit->status);
/* evaluate FSF status in QTCB */
switch (header->fsf_status) { switch (header->fsf_status) {
case FSF_PORT_HANDLE_NOT_VALID: case FSF_PORT_HANDLE_NOT_VALID:
zfcp_erp_adapter_reopen(unit->port->adapter, 0, 109, fsf_req); zfcp_erp_adapter_reopen(unit->port->adapter, 0, 109, req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; /* fall through */
break;
case FSF_LUN_ALREADY_OPEN: case FSF_LUN_ALREADY_OPEN:
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
case FSF_ACCESS_DENIED: case FSF_ACCESS_DENIED:
zfcp_fsf_access_denied_unit(fsf_req, unit); zfcp_fsf_access_denied_unit(req, unit);
atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
break; break;
case FSF_PORT_BOXED: case FSF_PORT_BOXED:
zfcp_erp_port_boxed(unit->port, 51, fsf_req); zfcp_erp_port_boxed(unit->port, 51, req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | req->status |= ZFCP_STATUS_FSFREQ_ERROR |
ZFCP_STATUS_FSFREQ_RETRY; ZFCP_STATUS_FSFREQ_RETRY;
break; break;
case FSF_LUN_SHARING_VIOLATION: case FSF_LUN_SHARING_VIOLATION:
if (header->fsf_status_qual.word[0] != 0) { if (header->fsf_status_qual.word[0])
dev_warn(&adapter->ccw_device->dev, dev_warn(&adapter->ccw_device->dev,
"FCP-LUN 0x%Lx at the remote port " "FCP-LUN 0x%Lx at the remote port "
"with WWPN 0x%Lx " "with WWPN 0x%Lx "
...@@ -2405,47 +1757,37 @@ zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *fsf_req) ...@@ -2405,47 +1757,37 @@ zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *fsf_req)
unit->port->wwpn, unit->port->wwpn,
queue_designator->hla, queue_designator->hla,
queue_designator->cssid); queue_designator->cssid);
} else else
zfcp_act_eval_err(adapter, zfcp_act_eval_err(adapter,
header->fsf_status_qual.word[2]); header->fsf_status_qual.word[2]);
zfcp_erp_unit_access_denied(unit, 60, fsf_req); zfcp_erp_unit_access_denied(unit, 60, req);
atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
dev_warn(&fsf_req->adapter->ccw_device->dev, dev_warn(&adapter->ccw_device->dev,
"The adapter ran out of resources. There is no " "The adapter ran out of resources. There is no "
"handle available for unit 0x%016Lx on port 0x%016Lx.", "handle available for unit 0x%016Lx on port 0x%016Lx.",
unit->fcp_lun, unit->port->wwpn); unit->fcp_lun, unit->port->wwpn);
zfcp_erp_unit_failed(unit, 34, fsf_req); zfcp_erp_unit_failed(unit, 34, req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; /* fall through */
case FSF_INVALID_COMMAND_OPTION:
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
case FSF_ADAPTER_STATUS_AVAILABLE: case FSF_ADAPTER_STATUS_AVAILABLE:
switch (header->fsf_status_qual.word[0]) { switch (header->fsf_status_qual.word[0]) {
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
/* Re-establish link to port */
zfcp_test_link(unit->port); zfcp_test_link(unit->port);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; /* fall through */
break;
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
/* ERP strategy will escalate */ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
} }
break; break;
case FSF_INVALID_COMMAND_OPTION:
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
retval = -EINVAL;
break;
case FSF_GOOD: case FSF_GOOD:
/* save LUN handle assigned by FSF */
unit->handle = header->lun_handle; unit->handle = header->lun_handle;
/* mark unit as open */
atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) &&
...@@ -2463,412 +1805,192 @@ zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *fsf_req) ...@@ -2463,412 +1805,192 @@ zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *fsf_req)
if (!readwrite) { if (!readwrite) {
atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, atomic_set_mask(ZFCP_STATUS_UNIT_READONLY,
&unit->status); &unit->status);
dev_info(&fsf_req->adapter->ccw_device->dev, dev_info(&adapter->ccw_device->dev,
"Read-only access for unit 0x%016Lx " "Read-only access for unit 0x%016Lx "
"on port 0x%016Lx.\n", "on port 0x%016Lx.\n",
unit->fcp_lun, unit->port->wwpn); unit->fcp_lun, unit->port->wwpn);
} }
if (exclusive && !readwrite) { if (exclusive && !readwrite) {
dev_err(&fsf_req->adapter->ccw_device->dev, dev_err(&adapter->ccw_device->dev,
"Exclusive access of read-only unit " "Exclusive access of read-only unit "
"0x%016Lx on port 0x%016Lx not " "0x%016Lx on port 0x%016Lx not "
"supported, disabling unit.\n", "supported, disabling unit.\n",
unit->fcp_lun, unit->port->wwpn); unit->fcp_lun, unit->port->wwpn);
zfcp_erp_unit_failed(unit, 35, fsf_req); zfcp_erp_unit_failed(unit, 35, req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; req->status |= ZFCP_STATUS_FSFREQ_ERROR;
zfcp_erp_unit_shutdown(unit, 0, 80, fsf_req); zfcp_erp_unit_shutdown(unit, 0, 80, req);
} else if (!exclusive && readwrite) { } else if (!exclusive && readwrite) {
dev_err(&fsf_req->adapter->ccw_device->dev, dev_err(&adapter->ccw_device->dev,
"Shared access of read-write unit " "Shared access of read-write unit "
"0x%016Lx on port 0x%016Lx not " "0x%016Lx on port 0x%016Lx not "
"supported, disabling unit.\n", "supported, disabling unit.\n",
unit->fcp_lun, unit->port->wwpn); unit->fcp_lun, unit->port->wwpn);
zfcp_erp_unit_failed(unit, 36, fsf_req); zfcp_erp_unit_failed(unit, 36, req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; req->status |= ZFCP_STATUS_FSFREQ_ERROR;
zfcp_erp_unit_shutdown(unit, 0, 81, fsf_req); zfcp_erp_unit_shutdown(unit, 0, 81, req);
} }
} }
retval = 0;
break; break;
} }
skip_fsfstatus: skip_fsfstatus:
atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &unit->status); atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &unit->status);
return retval;
} }
/* /**
* function: zfcp_fsf_close_unit * zfcp_fsf_open_unit - open unit
* * @erp_action: pointer to struct zfcp_erp_action
* purpose: * Returns: 0 on success, error otherwise
*
* returns: address of fsf_req - request successfully initiated
* NULL -
*
* assumptions: This routine does not check whether the associated
* remote port/lun has already been opened. This should be
* done by calling routines. Otherwise some status
* may be presented by FSF
*/ */
int int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
{ {
volatile struct qdio_buffer_element *sbale; volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req; struct zfcp_adapter *adapter = erp_action->adapter;
unsigned long lock_flags; struct zfcp_fsf_req *req;
int retval = 0; int retval = -EIO;
/* setup new FSF request */ spin_lock(&adapter->req_q.lock);
retval = zfcp_fsf_req_create(erp_action->adapter, if (zfcp_fsf_req_sbal_get(adapter))
FSF_QTCB_CLOSE_LUN,
ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
erp_action->adapter->pool.fsf_req_erp,
&lock_flags, &fsf_req);
if (retval < 0)
goto out; goto out;
sbale = zfcp_qdio_sbale_req(fsf_req); req = zfcp_fsf_req_create(adapter, FSF_QTCB_OPEN_LUN,
ZFCP_REQ_AUTO_CLEANUP,
adapter->pool.fsf_req_erp);
if (unlikely(IS_ERR(req))) {
retval = PTR_ERR(req);
goto out;
}
sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
fsf_req->qtcb->header.port_handle = erp_action->port->handle; req->qtcb->header.port_handle = erp_action->port->handle;
fsf_req->qtcb->header.lun_handle = erp_action->unit->handle; req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun;
atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->unit->status); req->handler = zfcp_fsf_open_unit_handler;
fsf_req->data = (unsigned long) erp_action->unit; req->data = erp_action->unit;
fsf_req->erp_action = erp_action; req->erp_action = erp_action;
erp_action->fsf_req = fsf_req; erp_action->fsf_req = req;
if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->unit->status);
zfcp_erp_start_timer(fsf_req); zfcp_erp_start_timer(req);
retval = zfcp_fsf_req_send(erp_action->fsf_req); retval = zfcp_fsf_req_send(req);
if (retval) { if (retval) {
zfcp_fsf_req_free(fsf_req); zfcp_fsf_req_free(req);
erp_action->fsf_req = NULL; erp_action->fsf_req = NULL;
goto out;
} }
out:
out: spin_unlock(&adapter->req_q.lock);
write_unlock_irqrestore(&erp_action->adapter->req_q.lock, lock_flags);
return retval; return retval;
} }
/* static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req)
* function: zfcp_fsf_close_unit_handler
*
* purpose: is called for finished Close LUN FSF command
*
* returns:
*/
static int
zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *fsf_req)
{ {
int retval = -EINVAL; struct zfcp_unit *unit = req->data;
struct zfcp_unit *unit;
unit = (struct zfcp_unit *) fsf_req->data;
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
/* don't change unit status in our bookkeeping */
goto skip_fsfstatus; goto skip_fsfstatus;
}
/* evaluate FSF status in QTCB */
switch (fsf_req->qtcb->header.fsf_status) {
switch (req->qtcb->header.fsf_status) {
case FSF_PORT_HANDLE_NOT_VALID: case FSF_PORT_HANDLE_NOT_VALID:
zfcp_erp_adapter_reopen(unit->port->adapter, 0, 110, fsf_req); zfcp_erp_adapter_reopen(unit->port->adapter, 0, 110, req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
case FSF_LUN_HANDLE_NOT_VALID: case FSF_LUN_HANDLE_NOT_VALID:
zfcp_erp_port_reopen(unit->port, 0, 111, fsf_req); zfcp_erp_port_reopen(unit->port, 0, 111, req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
case FSF_PORT_BOXED: case FSF_PORT_BOXED:
zfcp_erp_port_boxed(unit->port, 52, fsf_req); zfcp_erp_port_boxed(unit->port, 52, req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | req->status |= ZFCP_STATUS_FSFREQ_ERROR |
ZFCP_STATUS_FSFREQ_RETRY; ZFCP_STATUS_FSFREQ_RETRY;
break; break;
case FSF_ADAPTER_STATUS_AVAILABLE: case FSF_ADAPTER_STATUS_AVAILABLE:
switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) { switch (req->qtcb->header.fsf_status_qual.word[0]) {
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
/* re-establish link to port */
zfcp_test_link(unit->port); zfcp_test_link(unit->port);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; /* fall through */
break;
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
/* ERP strategy will escalate */ req->status |= ZFCP_STATUS_FSFREQ_ERROR;
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
default:
break; break;
} }
break; break;
case FSF_GOOD: case FSF_GOOD:
/* mark unit as closed */
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
retval = 0;
break; break;
} }
skip_fsfstatus:
skip_fsfstatus:
atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &unit->status); atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &unit->status);
return retval;
} }
/** /**
* zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) * zfcp_fsf_close_unit - close zfcp unit
* @adapter: adapter where scsi command is issued * @erp_action: pointer to struct zfcp_unit
* @unit: unit where command is sent to * Returns: 0 on success, error otherwise
* @scsi_cmnd: scsi command to be sent
* @timer: timer to be started when request is initiated
* @req_flags: flags for fsf_request
*/ */
int int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter,
struct zfcp_unit *unit,
struct scsi_cmnd * scsi_cmnd,
int use_timer, int req_flags)
{
struct zfcp_fsf_req *fsf_req = NULL;
struct fcp_cmnd_iu *fcp_cmnd_iu;
unsigned int sbtype;
unsigned long lock_flags;
int real_bytes = 0;
int retval = 0;
int mask;
/* setup new FSF request */
retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags,
adapter->pool.fsf_req_scsi,
&lock_flags, &fsf_req);
if (unlikely(retval < 0))
goto failed_req_create;
if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
&unit->status))) {
retval = -EBUSY;
goto unit_blocked;
}
zfcp_unit_get(unit);
fsf_req->unit = unit;
/* associate FSF request with SCSI request (for look up on abort) */
scsi_cmnd->host_scribble = (unsigned char *) fsf_req->req_id;
/* associate SCSI command with FSF request */
fsf_req->data = (unsigned long) scsi_cmnd;
/* set handles of unit and its parent port in QTCB */
fsf_req->qtcb->header.lun_handle = unit->handle;
fsf_req->qtcb->header.port_handle = unit->port->handle;
/* FSF does not define the structure of the FCP_CMND IU */
fcp_cmnd_iu = (struct fcp_cmnd_iu *)
&(fsf_req->qtcb->bottom.io.fcp_cmnd);
/*
* 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:
fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
/*
* FIXME(qdio):
* what is the correct type for commands
* without 'real' data buffers?
*/
sbtype = SBAL_FLAGS0_TYPE_READ;
break;
case DMA_FROM_DEVICE:
fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ;
sbtype = SBAL_FLAGS0_TYPE_READ;
fcp_cmnd_iu->rddata = 1;
break;
case DMA_TO_DEVICE:
fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE;
sbtype = SBAL_FLAGS0_TYPE_WRITE;
fcp_cmnd_iu->wddata = 1;
break;
case DMA_BIDIRECTIONAL:
default:
/*
* dummy, catch this condition earlier
* in zfcp_scsi_queuecommand
*/
goto failed_scsi_cmnd;
}
/* set FC service class in QTCB (3 per default) */
fsf_req->qtcb->bottom.io.service_class = ZFCP_FC_SERVICE_CLASS_DEFAULT;
/* set FCP_LUN in FCP_CMND IU in QTCB */
fcp_cmnd_iu->fcp_lun = unit->fcp_lun;
mask = ZFCP_STATUS_UNIT_READONLY | ZFCP_STATUS_UNIT_SHARED;
/* set task attributes in FCP_CMND IU in QTCB */
if (likely((scsi_cmnd->device->simple_tags) ||
(atomic_test_mask(mask, &unit->status))))
fcp_cmnd_iu->task_attribute = SIMPLE_Q;
else
fcp_cmnd_iu->task_attribute = UNTAGGED;
/* set additional length of FCP_CDB in FCP_CMND IU in QTCB, if needed */
if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH))
fcp_cmnd_iu->add_fcp_cdb_length
= (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2;
/*
* copy SCSI CDB (including additional length, if any) to
* FCP_CDB in FCP_CMND IU in QTCB
*/
memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
/* FCP CMND IU length in QTCB */
fsf_req->qtcb->bottom.io.fcp_cmnd_length =
sizeof (struct fcp_cmnd_iu) +
fcp_cmnd_iu->add_fcp_cdb_length + sizeof (fcp_dl_t);
/* generate SBALEs from data buffer */
real_bytes = zfcp_qdio_sbals_from_sg(fsf_req, sbtype,
scsi_sglist(scsi_cmnd),
ZFCP_MAX_SBALS_PER_REQ);
if (unlikely(real_bytes < 0)) {
if (fsf_req->sbal_number < ZFCP_MAX_SBALS_PER_REQ)
retval = -EIO;
else {
dev_err(&adapter->ccw_device->dev,
"SCSI request too large. "
"Shutting down unit 0x%016Lx on port "
"0x%016Lx.\n", unit->fcp_lun,
unit->port->wwpn);
zfcp_erp_unit_shutdown(unit, 0, 131, fsf_req);
retval = -EINVAL;
}
goto no_fit;
}
/* set length of FCP data length in FCP_CMND IU in QTCB */
zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes);
if (use_timer)
zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
retval = zfcp_fsf_req_send(fsf_req);
if (unlikely(retval < 0))
goto send_failed;
goto success;
send_failed:
no_fit:
failed_scsi_cmnd:
zfcp_unit_put(unit);
unit_blocked:
zfcp_fsf_req_free(fsf_req);
fsf_req = NULL;
scsi_cmnd->host_scribble = NULL;
success:
failed_req_create:
write_unlock_irqrestore(&adapter->req_q.lock, lock_flags);
return retval;
}
struct zfcp_fsf_req *
zfcp_fsf_send_fcp_command_task_management(struct zfcp_adapter *adapter,
struct zfcp_unit *unit,
u8 tm_flags, int req_flags)
{ {
struct zfcp_fsf_req *fsf_req = NULL;
int retval = 0;
struct fcp_cmnd_iu *fcp_cmnd_iu;
unsigned long lock_flags;
volatile struct qdio_buffer_element *sbale; volatile struct qdio_buffer_element *sbale;
struct zfcp_adapter *adapter = erp_action->adapter;
struct zfcp_fsf_req *req;
int retval = -EIO;
/* setup new FSF request */ spin_lock(&adapter->req_q.lock);
retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, if (zfcp_fsf_req_sbal_get(adapter))
adapter->pool.fsf_req_scsi,
&lock_flags, &fsf_req);
if (retval < 0)
goto out; goto out;
req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN,
ZFCP_REQ_AUTO_CLEANUP,
adapter->pool.fsf_req_erp);
if (unlikely(IS_ERR(req))) {
retval = PTR_ERR(req);
goto out;
}
if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED, sbale = zfcp_qdio_sbale_req(req);
&unit->status))) sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
goto unit_blocked;
/*
* Used to decide on proper handler in the return path,
* could be either zfcp_fsf_send_fcp_command_task_handler or
* zfcp_fsf_send_fcp_command_task_management_handler */
fsf_req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT;
/*
* hold a pointer to the unit being target of this
* task management request
*/
fsf_req->data = (unsigned long) unit;
/* set FSF related fields in QTCB */
fsf_req->qtcb->header.lun_handle = unit->handle;
fsf_req->qtcb->header.port_handle = unit->port->handle;
fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
fsf_req->qtcb->bottom.io.service_class = ZFCP_FC_SERVICE_CLASS_DEFAULT;
fsf_req->qtcb->bottom.io.fcp_cmnd_length =
sizeof (struct fcp_cmnd_iu) + sizeof (fcp_dl_t);
sbale = zfcp_qdio_sbale_req(fsf_req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
/* set FCP related fields in FCP_CMND IU in QTCB */ req->qtcb->header.port_handle = erp_action->port->handle;
fcp_cmnd_iu = (struct fcp_cmnd_iu *) req->qtcb->header.lun_handle = erp_action->unit->handle;
&(fsf_req->qtcb->bottom.io.fcp_cmnd); req->handler = zfcp_fsf_close_unit_handler;
fcp_cmnd_iu->fcp_lun = unit->fcp_lun; req->data = erp_action->unit;
fcp_cmnd_iu->task_management_flags = tm_flags; req->erp_action = erp_action;
erp_action->fsf_req = req;
zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT); atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->unit->status);
retval = zfcp_fsf_req_send(fsf_req);
if (!retval)
goto out;
unit_blocked:
zfcp_fsf_req_free(fsf_req);
fsf_req = NULL;
out: zfcp_erp_start_timer(req);
write_unlock_irqrestore(&adapter->req_q.lock, lock_flags); retval = zfcp_fsf_req_send(req);
return fsf_req; if (retval) {
zfcp_fsf_req_free(req);
erp_action->fsf_req = NULL;
}
out:
spin_unlock(&adapter->req_q.lock);
return retval;
} }
static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
{ {
lat_rec->sum += lat; lat_rec->sum += lat;
if (lat_rec->min > lat) lat_rec->min = min(lat_rec->min, lat);
lat_rec->min = lat; lat_rec->max = max(lat_rec->max, lat);
if (lat_rec->max < lat)
lat_rec->max = lat;
} }
static void zfcp_fsf_req_latency(struct zfcp_fsf_req *fsf_req) static void zfcp_fsf_req_latency(struct zfcp_fsf_req *req)
{ {
struct fsf_qual_latency_info *lat_inf; struct fsf_qual_latency_info *lat_inf;
struct latency_cont *lat; struct latency_cont *lat;
struct zfcp_unit *unit; struct zfcp_unit *unit = req->unit;
unsigned long flags; unsigned long flags;
lat_inf = &fsf_req->qtcb->prefix.prot_status_qual.latency_info; lat_inf = &req->qtcb->prefix.prot_status_qual.latency_info;
unit = fsf_req->unit;
switch (fsf_req->qtcb->bottom.io.data_direction) { switch (req->qtcb->bottom.io.data_direction) {
case FSF_DATADIR_READ: case FSF_DATADIR_READ:
lat = &unit->latencies.read; lat = &unit->latencies.read;
break; break;
...@@ -2886,212 +2008,53 @@ static void zfcp_fsf_req_latency(struct zfcp_fsf_req *fsf_req) ...@@ -2886,212 +2008,53 @@ static void zfcp_fsf_req_latency(struct zfcp_fsf_req *fsf_req)
zfcp_fsf_update_lat(&lat->channel, lat_inf->channel_lat); zfcp_fsf_update_lat(&lat->channel, lat_inf->channel_lat);
zfcp_fsf_update_lat(&lat->fabric, lat_inf->fabric_lat); zfcp_fsf_update_lat(&lat->fabric, lat_inf->fabric_lat);
lat->counter++; lat->counter++;
spin_unlock_irqrestore(&unit->latencies.lock, flags); spin_unlock_irqrestore(&unit->latencies.lock, flags);
}
/*
* function: zfcp_fsf_send_fcp_command_handler
*
* purpose: is called for finished Send FCP Command
*
* returns:
*/
static int
zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *fsf_req)
{
int retval = -EINVAL;
struct zfcp_unit *unit;
struct fsf_qtcb_header *header;
header = &fsf_req->qtcb->header;
if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT))
unit = (struct zfcp_unit *) fsf_req->data;
else
unit = fsf_req->unit;
if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
/* go directly to calls of special handlers */
goto skip_fsfstatus;
}
/* evaluate FSF status in QTCB */
switch (header->fsf_status) {
case FSF_PORT_HANDLE_NOT_VALID:
zfcp_erp_adapter_reopen(unit->port->adapter, 0, 112, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_LUN_HANDLE_NOT_VALID:
zfcp_erp_port_reopen(unit->port, 0, 113, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_HANDLE_MISMATCH:
zfcp_erp_adapter_reopen(unit->port->adapter, 0, 114, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_SERVICE_CLASS_NOT_SUPPORTED:
zfcp_fsf_class_not_supp(fsf_req);
break;
case FSF_FCPLUN_NOT_VALID:
zfcp_erp_port_reopen(unit->port, 0, 115, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_ACCESS_DENIED:
zfcp_fsf_access_denied_unit(fsf_req, unit);
break;
case FSF_DIRECTION_INDICATOR_NOT_VALID:
dev_err(&fsf_req->adapter->ccw_device->dev,
"Invalid data direction (%d) given for unit 0x%016Lx "
"on port 0x%016Lx, shutting down adapter.\n",
fsf_req->qtcb->bottom.io.data_direction,
unit->fcp_lun, unit->port->wwpn);
zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 133, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_CMND_LENGTH_NOT_VALID:
dev_err(&fsf_req->adapter->ccw_device->dev,
"An invalid control-data-block length field (%d) "
"was found in a command for unit 0x%016Lx on port "
"0x%016Lx. Shutting down adapter.\n",
fsf_req->qtcb->bottom.io.fcp_cmnd_length,
unit->fcp_lun, unit->port->wwpn);
zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 134, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_PORT_BOXED:
zfcp_erp_port_boxed(unit->port, 53, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
ZFCP_STATUS_FSFREQ_RETRY;
break;
case FSF_LUN_BOXED:
zfcp_erp_unit_boxed(unit, 54, fsf_req);
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR
| ZFCP_STATUS_FSFREQ_RETRY;
break;
case FSF_ADAPTER_STATUS_AVAILABLE:
switch (header->fsf_status_qual.word[0]) {
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
/* re-establish link to port */
zfcp_test_link(unit->port);
break;
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
/* FIXME(hw) need proper specs for proper action */
/* let scsi stack deal with retries and escalation */
break;
}
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_GOOD:
break;
case FSF_FCP_RSP_AVAILABLE:
break;
}
skip_fsfstatus:
if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) {
retval =
zfcp_fsf_send_fcp_command_task_management_handler(fsf_req);
} else {
retval = zfcp_fsf_send_fcp_command_task_handler(fsf_req);
fsf_req->unit = NULL;
zfcp_unit_put(unit);
}
return retval;
} }
/* static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req)
* function: zfcp_fsf_send_fcp_command_task_handler
*
* purpose: evaluates FCP_RSP IU
*
* returns:
*/
static int
zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *fsf_req)
{ {
int retval = 0; struct scsi_cmnd *scpnt = req->data;
struct scsi_cmnd *scpnt;
struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *)
&(fsf_req->qtcb->bottom.io.fcp_rsp); &(req->qtcb->bottom.io.fcp_rsp);
u32 sns_len; u32 sns_len;
char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1];
unsigned long flags; unsigned long flags;
read_lock_irqsave(&fsf_req->adapter->abort_lock, flags);
scpnt = (struct scsi_cmnd *) fsf_req->data;
if (unlikely(!scpnt)) if (unlikely(!scpnt))
goto out; return;
if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTED)) { read_lock_irqsave(&req->adapter->abort_lock, flags);
/* FIXME: (design) mid-layer should handle DID_ABORT like
* DID_SOFT_ERROR by retrying the request for devices if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ABORTED)) {
* that allow retries.
*/
set_host_byte(scpnt, DID_SOFT_ERROR); set_host_byte(scpnt, DID_SOFT_ERROR);
set_driver_byte(scpnt, SUGGEST_RETRY); set_driver_byte(scpnt, SUGGEST_RETRY);
goto skip_fsfstatus; goto skip_fsfstatus;
} }
if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) { if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
set_host_byte(scpnt, DID_ERROR); set_host_byte(scpnt, DID_ERROR);
goto skip_fsfstatus; goto skip_fsfstatus;
} }
/* set message byte of result in SCSI command */
set_msg_byte(scpnt, COMMAND_COMPLETE); set_msg_byte(scpnt, COMMAND_COMPLETE);
/*
* copy SCSI status code of FCP_STATUS of FCP_RSP IU to status byte
* of result in SCSI command
*/
scpnt->result |= fcp_rsp_iu->scsi_status; scpnt->result |= fcp_rsp_iu->scsi_status;
if (fsf_req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)
zfcp_fsf_req_latency(fsf_req); zfcp_fsf_req_latency(req);
/* check FCP_RSP_INFO */
if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) { if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) {
switch (fcp_rsp_info[3]) { if (fcp_rsp_info[3] == RSP_CODE_GOOD)
case RSP_CODE_GOOD:
/* ok, continue */
set_host_byte(scpnt, DID_OK); set_host_byte(scpnt, DID_OK);
break; else {
case RSP_CODE_LENGTH_MISMATCH:
/* hardware bug */
set_host_byte(scpnt, DID_ERROR);
goto skip_fsfstatus;
case RSP_CODE_FIELD_INVALID:
/* driver or hardware bug */
set_host_byte(scpnt, DID_ERROR);
goto skip_fsfstatus;
case RSP_CODE_RO_MISMATCH:
/* hardware bug */
set_host_byte(scpnt, DID_ERROR);
goto skip_fsfstatus;
default:
/* invalid FCP response code */
set_host_byte(scpnt, DID_ERROR); set_host_byte(scpnt, DID_ERROR);
goto skip_fsfstatus; goto skip_fsfstatus;
} }
} }
/* check for sense data */
if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) { if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) {
sns_len = FSF_FCP_RSP_SIZE - sns_len = FSF_FCP_RSP_SIZE - sizeof(struct fcp_rsp_iu) +
sizeof (struct fcp_rsp_iu) + fcp_rsp_iu->fcp_rsp_len; fcp_rsp_iu->fcp_rsp_len;
sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE); sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE);
sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len); sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len);
...@@ -3099,382 +2062,372 @@ zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *fsf_req) ...@@ -3099,382 +2062,372 @@ zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *fsf_req)
zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len); zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len);
} }
/* check for underrun */
if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) { if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) {
scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid); scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid);
if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) < if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) <
scpnt->underflow) scpnt->underflow)
set_host_byte(scpnt, DID_ERROR); set_host_byte(scpnt, DID_ERROR);
} }
skip_fsfstatus:
skip_fsfstatus:
if (scpnt->result != 0) if (scpnt->result != 0)
zfcp_scsi_dbf_event_result("erro", 3, fsf_req->adapter, scpnt, fsf_req); zfcp_scsi_dbf_event_result("erro", 3, req->adapter, scpnt, req);
else if (scpnt->retries > 0) else if (scpnt->retries > 0)
zfcp_scsi_dbf_event_result("retr", 4, fsf_req->adapter, scpnt, fsf_req); zfcp_scsi_dbf_event_result("retr", 4, req->adapter, scpnt, req);
else else
zfcp_scsi_dbf_event_result("norm", 6, fsf_req->adapter, scpnt, fsf_req); zfcp_scsi_dbf_event_result("norm", 6, req->adapter, scpnt, req);
/* cleanup pointer (need this especially for abort) */
scpnt->host_scribble = NULL; scpnt->host_scribble = NULL;
/* always call back */
(scpnt->scsi_done) (scpnt); (scpnt->scsi_done) (scpnt);
/* /*
* We must hold this lock until scsi_done has been called. * We must hold this lock until scsi_done has been called.
* Otherwise we may call scsi_done after abort regarding this * Otherwise we may call scsi_done after abort regarding this
* command has completed. * command has completed.
* Note: scsi_done must not block! * Note: scsi_done must not block!
*/ */
out: read_unlock_irqrestore(&req->adapter->abort_lock, flags);
read_unlock_irqrestore(&fsf_req->adapter->abort_lock, flags);
return retval;
} }
/* static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req)
* function: zfcp_fsf_send_fcp_command_task_management_handler
*
* purpose: evaluates FCP_RSP IU
*
* returns:
*/
static int
zfcp_fsf_send_fcp_command_task_management_handler(struct zfcp_fsf_req *fsf_req)
{ {
int retval = 0;
struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *)
&(fsf_req->qtcb->bottom.io.fcp_rsp); &(req->qtcb->bottom.io.fcp_rsp);
char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1];
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { if ((fcp_rsp_info[3] != RSP_CODE_GOOD) ||
fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; (req->status & ZFCP_STATUS_FSFREQ_ERROR))
req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
}
static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req)
{
struct zfcp_unit *unit;
struct fsf_qtcb_header *header = &req->qtcb->header;
if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT))
unit = req->data;
else
unit = req->unit;
if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
goto skip_fsfstatus; goto skip_fsfstatus;
}
/* check FCP_RSP_INFO */ switch (header->fsf_status) {
switch (fcp_rsp_info[3]) { case FSF_HANDLE_MISMATCH:
case RSP_CODE_GOOD: case FSF_PORT_HANDLE_NOT_VALID:
/* ok, continue */ zfcp_erp_adapter_reopen(unit->port->adapter, 0, 112, req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_FCPLUN_NOT_VALID:
case FSF_LUN_HANDLE_NOT_VALID:
zfcp_erp_port_reopen(unit->port, 0, 113, req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
case RSP_CODE_TASKMAN_UNSUPP: case FSF_SERVICE_CLASS_NOT_SUPPORTED:
fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP; zfcp_fsf_class_not_supp(req);
break; break;
case RSP_CODE_TASKMAN_FAILED: case FSF_ACCESS_DENIED:
fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; zfcp_fsf_access_denied_unit(req, unit);
break;
case FSF_DIRECTION_INDICATOR_NOT_VALID:
dev_err(&req->adapter->ccw_device->dev,
"Invalid data direction (%d) given for unit "
"0x%016Lx on port 0x%016Lx, shutting down "
"adapter.\n",
req->qtcb->bottom.io.data_direction,
unit->fcp_lun, unit->port->wwpn);
zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 133, req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_CMND_LENGTH_NOT_VALID:
dev_err(&req->adapter->ccw_device->dev,
"An invalid control-data-block length field (%d) "
"was found in a command for unit 0x%016Lx on port "
"0x%016Lx. Shutting down adapter.\n",
req->qtcb->bottom.io.fcp_cmnd_length,
unit->fcp_lun, unit->port->wwpn);
zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 134, req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_PORT_BOXED:
zfcp_erp_port_boxed(unit->port, 53, req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR |
ZFCP_STATUS_FSFREQ_RETRY;
break;
case FSF_LUN_BOXED:
zfcp_erp_unit_boxed(unit, 54, req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR |
ZFCP_STATUS_FSFREQ_RETRY;
break;
case FSF_ADAPTER_STATUS_AVAILABLE:
if (header->fsf_status_qual.word[0] ==
FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
zfcp_test_link(unit->port);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break; break;
default:
/* invalid FCP response code */
fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
} }
skip_fsfstatus:
skip_fsfstatus: if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
return retval; zfcp_fsf_send_fcp_ctm_handler(req);
else {
zfcp_fsf_send_fcp_command_task_handler(req);
req->unit = NULL;
zfcp_unit_put(unit);
}
} }
/**
/* * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
* function: zfcp_fsf_control_file * @adapter: adapter where scsi command is issued
* * @unit: unit where command is sent to
* purpose: Initiator of the control file upload/download FSF requests * @scsi_cmnd: scsi command to be sent
* * @timer: timer to be started when request is initiated
* returns: 0 - FSF request is successfuly created and queued * @req_flags: flags for fsf_request
* -EOPNOTSUPP - The FCP adapter does not have Control File support
* -EINVAL - Invalid direction specified
* -ENOMEM - Insufficient memory
* -EPERM - Cannot create FSF request or place it in QDIO queue
*/ */
struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter,
struct zfcp_fsf_cfdc *fsf_cfdc) struct zfcp_unit *unit,
struct scsi_cmnd *scsi_cmnd,
int use_timer, int req_flags)
{ {
struct zfcp_fsf_req *fsf_req; struct zfcp_fsf_req *req;
struct fsf_qtcb_bottom_support *bottom; struct fcp_cmnd_iu *fcp_cmnd_iu;
volatile struct qdio_buffer_element *sbale; unsigned int sbtype;
unsigned long lock_flags; int real_bytes, retval = -EIO;
int direction;
int retval;
int bytes;
if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) if (unlikely(!(atomic_read(&unit->status) &
return ERR_PTR(-EOPNOTSUPP); ZFCP_STATUS_COMMON_UNBLOCKED)))
return -EBUSY;
switch (fsf_cfdc->command) { spin_lock(&adapter->req_q.lock);
case FSF_QTCB_DOWNLOAD_CONTROL_FILE: if (!atomic_read(&adapter->req_q.count))
direction = SBAL_FLAGS0_TYPE_WRITE; goto out;
req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags,
adapter->pool.fsf_req_scsi);
if (unlikely(IS_ERR(req))) {
retval = PTR_ERR(req);
goto out;
}
zfcp_unit_get(unit);
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;
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:
req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
sbtype = SBAL_FLAGS0_TYPE_READ;
break; break;
case FSF_QTCB_UPLOAD_CONTROL_FILE: case DMA_FROM_DEVICE:
direction = SBAL_FLAGS0_TYPE_READ; req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ;
sbtype = SBAL_FLAGS0_TYPE_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; break;
case DMA_BIDIRECTIONAL:
default: default:
return ERR_PTR(-EINVAL); retval = -EIO;
goto failed_scsi_cmnd;
} }
retval = zfcp_fsf_req_create(adapter, fsf_cfdc->command, if (likely((scsi_cmnd->device->simple_tags) ||
ZFCP_WAIT_FOR_SBAL, ((atomic_read(&unit->status) & ZFCP_STATUS_UNIT_READONLY) &&
NULL, &lock_flags, &fsf_req); (atomic_read(&unit->status) & ZFCP_STATUS_UNIT_SHARED))))
if (retval < 0) { fcp_cmnd_iu->task_attribute = SIMPLE_Q;
retval = -EPERM; else
goto unlock_queue_lock; fcp_cmnd_iu->task_attribute = UNTAGGED;
}
sbale = zfcp_qdio_sbale_req(fsf_req); if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH))
sbale[0].flags |= direction; fcp_cmnd_iu->add_fcp_cdb_length =
(scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2;
bottom = &fsf_req->qtcb->bottom.support; memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
bottom->option = fsf_cfdc->option;
bytes = zfcp_qdio_sbals_from_sg(fsf_req, direction, req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) +
fsf_cfdc->sg, fcp_cmnd_iu->add_fcp_cdb_length + sizeof(fcp_dl_t);
ZFCP_MAX_SBALS_PER_REQ);
if (bytes != ZFCP_CFDC_MAX_SIZE) {
retval = -ENOMEM;
goto free_fsf_req;
}
zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); real_bytes = zfcp_qdio_sbals_from_sg(req, sbtype,
retval = zfcp_fsf_req_send(fsf_req); scsi_sglist(scsi_cmnd),
if (retval < 0) { FSF_MAX_SBALS_PER_REQ);
retval = -EPERM; if (unlikely(real_bytes < 0)) {
goto free_fsf_req; if (req->sbal_number < FSF_MAX_SBALS_PER_REQ)
retval = -EIO;
else {
dev_err(&adapter->ccw_device->dev,
"SCSI request too large. "
"Shutting down unit 0x%016Lx on port "
"0x%016Lx.\n", unit->fcp_lun,
unit->port->wwpn);
zfcp_erp_unit_shutdown(unit, 0, 131, req);
retval = -EINVAL;
}
goto failed_scsi_cmnd;
} }
write_unlock_irqrestore(&adapter->req_q.lock, lock_flags);
wait_event(fsf_req->completion_wq,
fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
return fsf_req; zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes);
free_fsf_req: if (use_timer)
zfcp_fsf_req_free(fsf_req); zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
unlock_queue_lock:
write_unlock_irqrestore(&adapter->req_q.lock, lock_flags);
return ERR_PTR(retval);
}
static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *fsf_req) retval = zfcp_fsf_req_send(req);
{ if (unlikely(retval))
if (fsf_req->qtcb->header.fsf_status != FSF_GOOD) goto failed_scsi_cmnd;
fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}
static inline int goto out;
zfcp_fsf_req_sbal_check(unsigned long *flags,
struct zfcp_qdio_queue *queue, int needed)
{
write_lock_irqsave(&queue->lock, *flags);
if (likely(atomic_read(&queue->count) >= needed))
return 1;
write_unlock_irqrestore(&queue->lock, *flags);
return 0;
}
/* failed_scsi_cmnd:
* set qtcb pointer in fsf_req and initialize QTCB zfcp_unit_put(unit);
*/ zfcp_fsf_req_free(req);
static void scsi_cmnd->host_scribble = NULL;
zfcp_fsf_req_qtcb_init(struct zfcp_fsf_req *fsf_req) out:
{ spin_unlock(&adapter->req_q.lock);
if (likely(fsf_req->qtcb != NULL)) { return retval;
fsf_req->qtcb->prefix.req_seq_no =
fsf_req->adapter->fsf_req_seq_no;
fsf_req->qtcb->prefix.req_id = fsf_req->req_id;
fsf_req->qtcb->prefix.ulp_info = ZFCP_ULP_INFO_VERSION;
fsf_req->qtcb->prefix.qtcb_type =
fsf_qtcb_type[fsf_req->fsf_command];
fsf_req->qtcb->prefix.qtcb_version = ZFCP_QTCB_VERSION;
fsf_req->qtcb->header.req_handle = fsf_req->req_id;
fsf_req->qtcb->header.fsf_command = fsf_req->fsf_command;
}
} }
/** /**
* zfcp_fsf_req_sbal_get - try to get one SBAL in the request queue * zfcp_fsf_send_fcp_ctm - send SCSI task management command
* @adapter: adapter for which request queue is examined * @adapter: pointer to struct zfcp-adapter
* @req_flags: flags indicating whether to wait for needed SBAL or not * @unit: pointer to struct zfcp_unit
* @lock_flags: lock_flags if queue_lock is taken * @tm_flags: unsigned byte for task management flags
* Return: 0 on success, otherwise -EIO, or -ERESTARTSYS * @req_flags: int request flags
* Locks: lock adapter->req_q->lock on success * Returns: on success pointer to struct fsf_req, NULL otherwise
*/
static int
zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter, int req_flags,
unsigned long *lock_flags)
{
long ret;
struct zfcp_qdio_queue *req_q = &adapter->req_q;
if (unlikely(req_flags & ZFCP_WAIT_FOR_SBAL)) {
ret = wait_event_interruptible_timeout(adapter->request_wq,
zfcp_fsf_req_sbal_check(lock_flags, req_q, 1),
ZFCP_SBAL_TIMEOUT);
if (ret < 0)
return ret;
if (!ret)
return -EIO;
} else if (!zfcp_fsf_req_sbal_check(lock_flags, req_q, 1))
return -EIO;
return 0;
}
/*
* function: zfcp_fsf_req_create
*
* purpose: create an FSF request at the specified adapter and
* setup common fields
*
* returns: -ENOMEM if there was insufficient memory for a request
* -EIO if no qdio buffers could be allocate to the request
* -EINVAL/-EPERM on bug conditions in req_dequeue
* 0 in success
*
* note: The created request is returned by reference.
*
* locks: lock of concerned request queue must not be held,
* but is held on completion (write, irqsave)
*/ */
int struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *adapter,
zfcp_fsf_req_create(struct zfcp_adapter *adapter, u32 fsf_cmd, int req_flags, struct zfcp_unit *unit,
mempool_t *pool, unsigned long *lock_flags, u8 tm_flags, int req_flags)
struct zfcp_fsf_req **fsf_req_p)
{ {
volatile struct qdio_buffer_element *sbale; volatile struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req = NULL; struct zfcp_fsf_req *req = NULL;
int ret = 0; struct fcp_cmnd_iu *fcp_cmnd_iu;
struct zfcp_qdio_queue *req_q = &adapter->req_q;
/* allocate new FSF request */
fsf_req = zfcp_fsf_req_alloc(pool, req_flags);
if (unlikely(!fsf_req)) {
ret = -ENOMEM;
goto failed_fsf_req;
}
fsf_req->adapter = adapter;
fsf_req->fsf_command = fsf_cmd;
INIT_LIST_HEAD(&fsf_req->list);
init_timer(&fsf_req->timer);
/* initialize waitqueue which may be used to wait on
this request completion */
init_waitqueue_head(&fsf_req->completion_wq);
ret = zfcp_fsf_req_sbal_get(adapter, req_flags, lock_flags);
if (ret < 0)
goto failed_sbals;
/* this is serialized (we are holding req_queue-lock of adapter) */
if (adapter->req_no == 0)
adapter->req_no++;
fsf_req->req_id = adapter->req_no++;
zfcp_fsf_req_qtcb_init(fsf_req);
/*
* We hold queue_lock here. Check if QDIOUP is set and let request fail
* if it is not set (see also *_open_qdio and *_close_qdio).
*/
if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) {
write_unlock_irqrestore(&req_q->lock, *lock_flags);
ret = -EIO;
goto failed_sbals;
}
if (fsf_req->qtcb) { if (unlikely(!(atomic_read(&unit->status) &
fsf_req->seq_no = adapter->fsf_req_seq_no; ZFCP_STATUS_COMMON_UNBLOCKED)))
fsf_req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; return NULL;
}
fsf_req->sbal_number = 1;
fsf_req->sbal_first = req_q->first;
fsf_req->sbal_last = req_q->first;
fsf_req->sbale_curr = 1;
if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) { spin_lock(&adapter->req_q.lock);
fsf_req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; if (!atomic_read(&adapter->req_q.count))
} goto out;
req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags,
adapter->pool.fsf_req_scsi);
if (unlikely(IS_ERR(req)))
goto out;
sbale = zfcp_qdio_sbale_req(fsf_req); req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT;
req->data = unit;
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.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(fcp_dl_t);
sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE;
sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
/* setup common SBALE fields */ fcp_cmnd_iu = (struct fcp_cmnd_iu *) &req->qtcb->bottom.io.fcp_cmnd;
sbale[0].addr = (void *) fsf_req->req_id; fcp_cmnd_iu->fcp_lun = unit->fcp_lun;
sbale[0].flags |= SBAL_FLAGS0_COMMAND; fcp_cmnd_iu->task_management_flags = tm_flags;
if (likely(fsf_req->qtcb != NULL)) {
sbale[1].addr = (void *) fsf_req->qtcb;
sbale[1].length = sizeof(struct fsf_qtcb);
}
goto success; zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
if (!zfcp_fsf_req_send(req))
goto out;
failed_sbals: zfcp_fsf_req_free(req);
/* dequeue new FSF request previously enqueued */ req = NULL;
zfcp_fsf_req_free(fsf_req); out:
fsf_req = NULL; spin_unlock(&adapter->req_q.lock);
return req;
}
failed_fsf_req: static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req)
write_lock_irqsave(&req_q->lock, *lock_flags); {
success: if (req->qtcb->header.fsf_status != FSF_GOOD)
*fsf_req_p = fsf_req; req->status |= ZFCP_STATUS_FSFREQ_ERROR;
return ret;
} }
/* /**
* function: zfcp_fsf_req_send * zfcp_fsf_control_file - control file upload/download
* * @adapter: pointer to struct zfcp_adapter
* purpose: start transfer of FSF request via QDIO * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
* * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
* returns: 0 - request transfer succesfully started
* !0 - start of request transfer failed
*/ */
static int zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req) struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
struct zfcp_fsf_cfdc *fsf_cfdc)
{ {
struct zfcp_adapter *adapter;
struct zfcp_qdio_queue *req_q;
volatile struct qdio_buffer_element *sbale; volatile struct qdio_buffer_element *sbale;
int inc_seq_no; struct zfcp_fsf_req *req = NULL;
int retval = 0; struct fsf_qtcb_bottom_support *bottom;
int direction, retval = -EIO, bytes;
if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
return ERR_PTR(-EOPNOTSUPP);
switch (fsf_cfdc->command) {
case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
direction = SBAL_FLAGS0_TYPE_WRITE;
break;
case FSF_QTCB_UPLOAD_CONTROL_FILE:
direction = SBAL_FLAGS0_TYPE_READ;
break;
default:
return ERR_PTR(-EINVAL);
}
adapter = fsf_req->adapter; spin_lock(&adapter->req_q.lock);
req_q = &adapter->req_q; if (zfcp_fsf_req_sbal_get(adapter))
goto out;
sbale = zfcp_qdio_sbale_req(fsf_req); req = zfcp_fsf_req_create(adapter, fsf_cfdc->command, 0, NULL);
if (unlikely(IS_ERR(req))) {
retval = -EPERM;
goto out;
}
/* put allocated FSF request into hash table */ req->handler = zfcp_fsf_control_file_handler;
spin_lock(&adapter->req_list_lock);
zfcp_reqlist_add(adapter, fsf_req);
spin_unlock(&adapter->req_list_lock);
inc_seq_no = (fsf_req->qtcb != NULL); sbale = zfcp_qdio_sbale_req(req);
sbale[0].flags |= direction;
fsf_req->issued = get_clock(); bottom = &req->qtcb->bottom.support;
bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
bottom->option = fsf_cfdc->option;
retval = zfcp_qdio_send(fsf_req); bytes = zfcp_qdio_sbals_from_sg(req, direction, fsf_cfdc->sg,
FSF_MAX_SBALS_PER_REQ);
if (bytes != ZFCP_CFDC_MAX_SIZE) {
retval = -ENOMEM;
zfcp_fsf_req_free(req);
goto out;
}
if (unlikely(retval)) { zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
/* Queues are down..... */ retval = zfcp_fsf_req_send(req);
del_timer(&fsf_req->timer); out:
spin_lock(&adapter->req_list_lock); spin_unlock(&adapter->req_q.lock);
zfcp_reqlist_remove(adapter, fsf_req);
spin_unlock(&adapter->req_list_lock);
/* undo changes in request queue made for this request */
atomic_add(fsf_req->sbal_number, &req_q->count);
req_q->first -= fsf_req->sbal_number;
req_q->first += QDIO_MAX_BUFFERS_PER_Q;
req_q->first %= QDIO_MAX_BUFFERS_PER_Q;
zfcp_erp_adapter_reopen(adapter, 0, 116, fsf_req);
retval = -EIO;
} else {
/*
* increase FSF sequence counter -
* this must only be done for request successfully enqueued to
* QDIO this rejected requests may be cleaned up by calling
* routines resulting in missing sequence counter values
* otherwise,
*/
/* Don't increase for unsolicited status */ if (!retval) {
if (inc_seq_no) wait_event(req->completion_wq,
adapter->fsf_req_seq_no++; req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
return req;
} }
return retval; return ERR_PTR(retval);
} }
drivers/s390/scsi/zfcp_fsf.h
浏览文件 @ c41f8cbd
...@@ -287,6 +287,18 @@ struct fsf_bit_error_payload { ...@@ -287,6 +287,18 @@ struct fsf_bit_error_payload {
u32 current_transmit_b2b_credit; u32 current_transmit_b2b_credit;
} __attribute__ ((packed)); } __attribute__ ((packed));
struct fsf_link_down_info {
u32 error_code;
u32 res1;
u8 res2[2];
u8 primary_status;
u8 ioerr_code;
u8 action_code;
u8 reason_code;
u8 explanation_code;
u8 vendor_specific_code;
} __attribute__ ((packed));
struct fsf_status_read_buffer { struct fsf_status_read_buffer {
u32 status_type; u32 status_type;
u32 status_subtype; u32 status_subtype;
...@@ -297,7 +309,12 @@ struct fsf_status_read_buffer { ...@@ -297,7 +309,12 @@ struct fsf_status_read_buffer {
u32 class; u32 class;
u64 fcp_lun; u64 fcp_lun;
u8 res3[24]; u8 res3[24];
u8 payload[FSF_STATUS_READ_PAYLOAD_SIZE]; union {
u8 data[FSF_STATUS_READ_PAYLOAD_SIZE];
u32 word[FSF_STATUS_READ_PAYLOAD_SIZE/sizeof(u32)];
struct fsf_link_down_info link_down_info;
struct fsf_bit_error_payload bit_error;
} payload;
} __attribute__ ((packed)); } __attribute__ ((packed));
struct fsf_qual_version_error { struct fsf_qual_version_error {
...@@ -310,18 +327,6 @@ struct fsf_qual_sequence_error { ...@@ -310,18 +327,6 @@ struct fsf_qual_sequence_error {
u32 res1[3]; u32 res1[3];
} __attribute__ ((packed)); } __attribute__ ((packed));
struct fsf_link_down_info {
u32 error_code;
u32 res1;
u8 res2[2];
u8 primary_status;
u8 ioerr_code;
u8 action_code;
u8 reason_code;
u8 explanation_code;
u8 vendor_specific_code;
} __attribute__ ((packed));
struct fsf_qual_latency_info { struct fsf_qual_latency_info {
u32 channel_lat; u32 channel_lat;
u32 fabric_lat; u32 fabric_lat;
......
drivers/s390/scsi/zfcp_qdio.c
浏览文件 @ c41f8cbd
...@@ -10,7 +10,7 @@ ...@@ -10,7 +10,7 @@
/* FIXME(tune): free space should be one max. SBAL chain plus what? */ /* FIXME(tune): free space should be one max. SBAL chain plus what? */
#define ZFCP_QDIO_PCI_INTERVAL (QDIO_MAX_BUFFERS_PER_Q \ #define ZFCP_QDIO_PCI_INTERVAL (QDIO_MAX_BUFFERS_PER_Q \
- (ZFCP_MAX_SBALS_PER_REQ + 4)) - (FSF_MAX_SBALS_PER_REQ + 4))
#define QBUFF_PER_PAGE (PAGE_SIZE / sizeof(struct qdio_buffer)) #define QBUFF_PER_PAGE (PAGE_SIZE / sizeof(struct qdio_buffer))
static int zfcp_qdio_buffers_enqueue(struct qdio_buffer **sbal) static int zfcp_qdio_buffers_enqueue(struct qdio_buffer **sbal)
...@@ -432,9 +432,9 @@ void zfcp_qdio_close(struct zfcp_adapter *adapter) ...@@ -432,9 +432,9 @@ void zfcp_qdio_close(struct zfcp_adapter *adapter)
/* clear QDIOUP flag, thus do_QDIO is not called during qdio_shutdown */ /* clear QDIOUP flag, thus do_QDIO is not called during qdio_shutdown */
req_q = &adapter->req_q; req_q = &adapter->req_q;
write_lock_irq(&req_q->lock); spin_lock(&req_q->lock);
atomic_clear_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status); atomic_clear_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status);
write_unlock_irq(&req_q->lock); spin_unlock(&req_q->lock);
while (qdio_shutdown(adapter->ccw_device, QDIO_FLAG_CLEANUP_USING_CLEAR) while (qdio_shutdown(adapter->ccw_device, QDIO_FLAG_CLEANUP_USING_CLEAR)
== -EINPROGRESS) == -EINPROGRESS)
......
drivers/s390/scsi/zfcp_scsi.c
浏览文件 @ c41f8cbd
...@@ -182,7 +182,7 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt) ...@@ -182,7 +182,7 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
zfcp_scsi_dbf_event_abort("lte1", adapter, scpnt, NULL, 0); zfcp_scsi_dbf_event_abort("lte1", adapter, scpnt, NULL, 0);
return retval; return retval;
} }
fsf_req->data = 0; fsf_req->data = NULL;
fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTING; fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTING;
/* don't access old fsf_req after releasing the abort_lock */ /* don't access old fsf_req after releasing the abort_lock */
...@@ -220,8 +220,7 @@ static int zfcp_task_mgmt_function(struct zfcp_unit *unit, u8 tm_flags, ...@@ -220,8 +220,7 @@ static int zfcp_task_mgmt_function(struct zfcp_unit *unit, u8 tm_flags,
int retval = SUCCESS; int retval = SUCCESS;
/* issue task management function */ /* issue task management function */
fsf_req = zfcp_fsf_send_fcp_command_task_management fsf_req = zfcp_fsf_send_fcp_ctm(adapter, unit, tm_flags, 0);
(adapter, unit, tm_flags, 0);
if (!fsf_req) { if (!fsf_req) {
zfcp_scsi_dbf_event_devreset("nres", tm_flags, unit, scpnt); zfcp_scsi_dbf_event_devreset("nres", tm_flags, unit, scpnt);
return FAILED; return FAILED;
......
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