static void __init zfcp_init_device_configure(void)
{
struct zfcp_adapter *adapter;
struct zfcp_port *port;
struct zfcp_unit *unit;
down(&zfcp_data.config_sema);
read_lock_irq(&zfcp_data.config_lock);
adapter = zfcp_get_adapter_by_busid(zfcp_data.init_busid);
if (adapter)
zfcp_adapter_get(adapter);
read_unlock_irq(&zfcp_data.config_lock);
if (!adapter)
goto out_adapter;
port = zfcp_port_enqueue(adapter, zfcp_data.init_wwpn, 0, 0);
if (IS_ERR(port))
goto out_port;
unit = zfcp_unit_enqueue(port, zfcp_data.init_fcp_lun);
if (IS_ERR(unit))
goto out_unit;
up(&zfcp_data.config_sema);
ccw_device_set_online(adapter->ccw_device);
zfcp_erp_wait(adapter);
down(&zfcp_data.config_sema);
zfcp_unit_put(unit);
out_unit:
zfcp_port_put(port);
out_port:
zfcp_adapter_put(adapter);
out_adapter:
up(&zfcp_data.config_sema);
return;
}
static int ns2_led_get_mode(struct ns2_led_data *led_dat,
enum ns2_led_modes *mode)
{
int i;
int ret = -EINVAL;
int cmd_level;
int slow_level;
read_lock_irq(&led_dat->rw_lock);
cmd_level = gpio_get_value(led_dat->cmd);
slow_level = gpio_get_value(led_dat->slow);
for (i = 0; i < ARRAY_SIZE(ns2_led_modval); i++) {
if (cmd_level == ns2_led_modval[i].cmd_level &&
slow_level == ns2_led_modval[i].slow_level) {
*mode = ns2_led_modval[i].mode;
ret = 0;
break;
}
}
read_unlock_irq(&led_dat->rw_lock);
return ret;
}
/*
* Our MPS died. Tell our daemon to send NHRP data plane purge to each
* of the egress shortcuts we have.
*/
static void mps_death( struct k_message * msg, struct mpoa_client * mpc )
{
eg_cache_entry *entry;
dprintk("mpoa: (%s) mps_death:\n", mpc->dev->name);
if(memcmp(msg->MPS_ctrl, mpc->mps_ctrl_addr, ATM_ESA_LEN)){
printk("mpoa: (%s) mps_death: wrong MPS\n", mpc->dev->name);
return;
}
/* FIXME: This knows too much of the cache structure */
read_lock_irq(&mpc->egress_lock);
entry = mpc->eg_cache;
while (entry != NULL) {
purge_egress_shortcut(entry->shortcut, entry);
entry = entry->next;
}
read_unlock_irq(&mpc->egress_lock);
mpc->in_ops->destroy_cache(mpc);
mpc->eg_ops->destroy_cache(mpc);
return;
}
static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct zfcp_port *port = dev_get_drvdata(dev);
struct zfcp_unit *unit;
u64 fcp_lun;
LIST_HEAD(unit_remove_lh);
struct scsi_device *sdev;
mutex_lock(&zfcp_data.config_mutex);
if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) {
mutex_unlock(&zfcp_data.config_mutex);
return -EBUSY;
}
if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) {
mutex_unlock(&zfcp_data.config_mutex);
return -EINVAL;
}
read_lock_irq(&zfcp_data.config_lock);
unit = zfcp_get_unit_by_lun(port, fcp_lun);
read_unlock_irq(&zfcp_data.config_lock);
if (!unit) {
mutex_unlock(&zfcp_data.config_mutex);
return -ENXIO;
}
zfcp_unit_get(unit);
mutex_unlock(&zfcp_data.config_mutex);
sdev = scsi_device_lookup(port->adapter->scsi_host, 0,
port->starget_id,
scsilun_to_int((struct scsi_lun *)&fcp_lun));
if (sdev) {
scsi_remove_device(sdev);
scsi_device_put(sdev);
}
mutex_lock(&zfcp_data.config_mutex);
zfcp_unit_put(unit);
if (atomic_read(&unit->refcount)) {
mutex_unlock(&zfcp_data.config_mutex);
return -ENXIO;
}
write_lock_irq(&zfcp_data.config_lock);
atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status);
list_move(&unit->list, &unit_remove_lh);
write_unlock_irq(&zfcp_data.config_lock);
mutex_unlock(&zfcp_data.config_mutex);
zfcp_erp_unit_shutdown(unit, 0, "syurs_1", NULL);
zfcp_erp_wait(unit->port->adapter);
zfcp_unit_dequeue(unit);
return (ssize_t)count;
}
static eg_cache_entry *eg_cache_get_by_cache_id(__be32 cache_id, struct mpoa_client *mpc)
{
eg_cache_entry *entry;
read_lock_irq(&mpc->egress_lock);
entry = mpc->eg_cache;
while(entry != NULL) {
if(entry->ctrl_info.cache_id == cache_id) {
atomic_inc(&entry->use);
read_unlock_irq(&mpc->egress_lock);
return entry;
}
entry = entry->next;
}
read_unlock_irq(&mpc->egress_lock);
return NULL;
}
static eg_cache_entry *eg_cache_get_by_src_ip(__be32 ipaddr, struct mpoa_client *mpc)
{
eg_cache_entry *entry;
read_lock_irq(&mpc->egress_lock);
entry = mpc->eg_cache;
while(entry != NULL) {
if(entry->latest_ip_addr == ipaddr) {
atomic_inc(&entry->use);
read_unlock_irq(&mpc->egress_lock);
return entry;
}
entry = entry->next;
}
read_unlock_irq(&mpc->egress_lock);
return NULL;
}
static struct nkfs_btree_node * nkfs_btree_nodes_lookup(struct nkfs_btree *tree,
u64 block)
{
struct nkfs_btree_node *node;
read_lock_irq(&tree->nodes_lock);
node = __nkfs_btree_nodes_lookup(tree, block);
if (node)
NKFS_BTREE_NODE_REF(node);
read_unlock_irq(&tree->nodes_lock);
return node;
}
/**
* zfcp_scsi_adapter_unregister - Unregister SCSI and FC host from SCSI midlayer
* @adapter: The zfcp adapter to unregister.
*/
void zfcp_scsi_adapter_unregister(struct zfcp_adapter *adapter)
{
struct Scsi_Host *shost;
struct zfcp_port *port;
shost = adapter->scsi_host;
if (!shost)
return;
read_lock_irq(&adapter->port_list_lock);
list_for_each_entry(port, &adapter->port_list, list)
port->rport = NULL;
read_unlock_irq(&adapter->port_list_lock);
fc_remove_host(shost);
scsi_remove_host(shost);
scsi_host_put(shost);
adapter->scsi_host = NULL;
}
/*
* purge egress cache and tell daemon to 'action' (DIE, RELOAD)
*/
static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action)
{
eg_cache_entry *entry;
msg->type = SND_EGRESS_PURGE;
/* FIXME: This knows too much of the cache structure */
read_lock_irq(&mpc->egress_lock);
entry = mpc->eg_cache;
while (entry != NULL) {
msg->content.eg_info = entry->ctrl_info;
dprintk("cache_id %u\n", entry->ctrl_info.cache_id);
msg_to_mpoad(msg, mpc);
entry = entry->next;
}
read_unlock_irq(&mpc->egress_lock);
msg->type = action;
msg_to_mpoad(msg, mpc);
}
static void __init zfcp_init_device_configure(char *busid, u64 wwpn, u64 lun)
{
struct zfcp_adapter *adapter;
struct zfcp_port *port;
struct zfcp_unit *unit;
down(&zfcp_data.config_sema);
read_lock_irq(&zfcp_data.config_lock);
adapter = zfcp_get_adapter_by_busid(busid);
if (adapter)
zfcp_adapter_get(adapter);
read_unlock_irq(&zfcp_data.config_lock);
if (!adapter)
goto out_adapter;
port = zfcp_port_enqueue(adapter, wwpn, 0, 0);
if (IS_ERR(port))
goto out_port;
unit = zfcp_unit_enqueue(port, lun);
if (IS_ERR(unit))
goto out_unit;
up(&zfcp_data.config_sema);
ccw_device_set_online(adapter->ccw_device);
zfcp_erp_wait(adapter);
wait_event(adapter->erp_done_wqh,
!(atomic_read(&unit->status) &
ZFCP_STATUS_UNIT_SCSI_WORK_PENDING));
down(&zfcp_data.config_sema);
zfcp_unit_put(unit);
out_unit:
zfcp_port_put(port);
out_port:
zfcp_adapter_put(adapter);
out_adapter:
up(&zfcp_data.config_sema);
return;
}
static inline void check_for_tasks(int dead_cpu)
{
struct task_struct *g, *p;
read_lock_irq(&tasklist_lock);
do_each_thread(g, p) {
if (!p->on_rq)
continue;
/*
* We do the check with unlocked task_rq(p)->lock.
* Order the reading to do not warn about a task,
* which was running on this cpu in the past, and
* it's just been woken on another cpu.
*/
rmb();
if (task_cpu(p) != dead_cpu)
continue;
pr_warn("Task %s (pid=%d) is on cpu %d (state=%ld, flags=%x)\n",
p->comm, task_pid_nr(p), dead_cpu, p->state, p->flags);
} while_each_thread(g, p);
read_unlock_irq(&tasklist_lock);
}
static void __init zfcp_init_device_configure(char *busid, u64 wwpn, u64 lun)
{
struct zfcp_adapter *adapter;
struct zfcp_port *port;
struct zfcp_unit *unit;
mutex_lock(&zfcp_data.config_mutex);
read_lock_irq(&zfcp_data.config_lock);
adapter = zfcp_get_adapter_by_busid(busid);
if (adapter)
zfcp_adapter_get(adapter);
read_unlock_irq(&zfcp_data.config_lock);
if (!adapter)
goto out_adapter;
port = zfcp_port_enqueue(adapter, wwpn, 0, 0);
if (IS_ERR(port))
goto out_port;
unit = zfcp_unit_enqueue(port, lun);
if (IS_ERR(unit))
goto out_unit;
mutex_unlock(&zfcp_data.config_mutex);
ccw_device_set_online(adapter->ccw_device);
zfcp_erp_wait(adapter);
flush_work(&unit->scsi_work);
mutex_lock(&zfcp_data.config_mutex);
zfcp_unit_put(unit);
out_unit:
zfcp_port_put(port);
out_port:
zfcp_adapter_put(adapter);
out_adapter:
mutex_unlock(&zfcp_data.config_mutex);
return;
}
static void zfcp_scsi_forget_cmnds(struct zfcp_scsi_dev *zsdev, u8 tm_flags)
{
struct zfcp_adapter *adapter = zsdev->port->adapter;
struct zfcp_scsi_req_filter filter = {
.tmf_scope = FCP_TMF_TGT_RESET,
.port_handle = zsdev->port->handle,
};
unsigned long flags;
if (tm_flags == FCP_TMF_LUN_RESET) {
filter.tmf_scope = FCP_TMF_LUN_RESET;
filter.lun_handle = zsdev->lun_handle;
}
/*
* abort_lock secures against other processings - in the abort-function
* and normal cmnd-handler - of (struct zfcp_fsf_req *)->data
*/
write_lock_irqsave(&adapter->abort_lock, flags);
zfcp_reqlist_apply_for_all(adapter->req_list, zfcp_scsi_forget_cmnd,
&filter);
write_unlock_irqrestore(&adapter->abort_lock, flags);
}
/**
* zfcp_scsi_task_mgmt_function() - Send a task management function (sync).
* @sdev: Pointer to SCSI device to send the task management command to.
* @tm_flags: Task management flags,
* here we only handle %FCP_TMF_TGT_RESET or %FCP_TMF_LUN_RESET.
*/
static int zfcp_scsi_task_mgmt_function(struct scsi_device *sdev, u8 tm_flags)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
struct zfcp_fsf_req *fsf_req = NULL;
int retval = SUCCESS, ret;
int retry = 3;
while (retry--) {
fsf_req = zfcp_fsf_fcp_task_mgmt(sdev, tm_flags);
if (fsf_req)
break;
zfcp_dbf_scsi_devreset("wait", sdev, tm_flags, NULL);
zfcp_erp_wait(adapter);
ret = fc_block_rport(rport);
if (ret) {
zfcp_dbf_scsi_devreset("fiof", sdev, tm_flags, NULL);
return ret;
}
if (!(atomic_read(&adapter->status) &
ZFCP_STATUS_COMMON_RUNNING)) {
zfcp_dbf_scsi_devreset("nres", sdev, tm_flags, NULL);
return SUCCESS;
}
}
if (!fsf_req) {
zfcp_dbf_scsi_devreset("reqf", sdev, tm_flags, NULL);
return FAILED;
}
wait_for_completion(&fsf_req->completion);
if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
zfcp_dbf_scsi_devreset("fail", sdev, tm_flags, fsf_req);
retval = FAILED;
} else {
zfcp_dbf_scsi_devreset("okay", sdev, tm_flags, fsf_req);
zfcp_scsi_forget_cmnds(zfcp_sdev, tm_flags);
}
zfcp_fsf_req_free(fsf_req);
return retval;
}
static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt)
{
struct scsi_device *sdev = scpnt->device;
return zfcp_scsi_task_mgmt_function(sdev, FCP_TMF_LUN_RESET);
}
static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
{
struct scsi_target *starget = scsi_target(scpnt->device);
struct fc_rport *rport = starget_to_rport(starget);
struct Scsi_Host *shost = rport_to_shost(rport);
struct scsi_device *sdev = NULL, *tmp_sdev;
struct zfcp_adapter *adapter =
(struct zfcp_adapter *)shost->hostdata[0];
int ret;
shost_for_each_device(tmp_sdev, shost) {
if (tmp_sdev->id == starget->id) {
sdev = tmp_sdev;
break;
}
}
if (!sdev) {
ret = FAILED;
zfcp_dbf_scsi_eh("tr_nosd", adapter, starget->id, ret);
return ret;
}
ret = zfcp_scsi_task_mgmt_function(sdev, FCP_TMF_TGT_RESET);
/* release reference from above shost_for_each_device */
if (sdev)
scsi_device_put(tmp_sdev);
return ret;
}
static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
int ret = SUCCESS, fc_ret;
zfcp_erp_adapter_reopen(adapter, 0, "schrh_1");
zfcp_erp_wait(adapter);
fc_ret = fc_block_scsi_eh(scpnt);
if (fc_ret)
ret = fc_ret;
zfcp_dbf_scsi_eh("schrh_r", adapter, ~0, ret);
return ret;
}
/**
* zfcp_scsi_sysfs_host_reset() - Support scsi_host sysfs attribute host_reset.
* @shost: Pointer to Scsi_Host to perform action on.
* @reset_type: We support %SCSI_ADAPTER_RESET but not %SCSI_FIRMWARE_RESET.
*
* Return: 0 on %SCSI_ADAPTER_RESET, -%EOPNOTSUPP otherwise.
*
* This is similar to zfcp_sysfs_adapter_failed_store().
*/
static int zfcp_scsi_sysfs_host_reset(struct Scsi_Host *shost, int reset_type)
{
struct zfcp_adapter *adapter =
(struct zfcp_adapter *)shost->hostdata[0];
int ret = 0;
if (reset_type != SCSI_ADAPTER_RESET) {
ret = -EOPNOTSUPP;
zfcp_dbf_scsi_eh("scshr_n", adapter, ~0, ret);
return ret;
}
zfcp_erp_adapter_reset_sync(adapter, "scshr_y");
return ret;
}
struct scsi_transport_template *zfcp_scsi_transport_template;
static struct scsi_host_template zfcp_scsi_host_template = {
.module = THIS_MODULE,
.name = "zfcp",
.queuecommand = zfcp_scsi_queuecommand,
.eh_timed_out = fc_eh_timed_out,
.eh_abort_handler = zfcp_scsi_eh_abort_handler,
.eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler,
.eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler,
.eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler,
.slave_alloc = zfcp_scsi_slave_alloc,
.slave_configure = zfcp_scsi_slave_configure,
.slave_destroy = zfcp_scsi_slave_destroy,
.change_queue_depth = scsi_change_queue_depth,
.host_reset = zfcp_scsi_sysfs_host_reset,
.proc_name = "zfcp",
.can_queue = 4096,
.this_id = -1,
.sg_tablesize = (((QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
* ZFCP_QDIO_MAX_SBALS_PER_REQ) - 2),
/* GCD, adjusted later */
.max_sectors = (((QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
* ZFCP_QDIO_MAX_SBALS_PER_REQ) - 2) * 8,
/* GCD, adjusted later */
/* report size limit per scatter-gather segment */
.max_segment_size = ZFCP_QDIO_SBALE_LEN,
.dma_boundary = ZFCP_QDIO_SBALE_LEN - 1,
.shost_attrs = zfcp_sysfs_shost_attrs,
.sdev_attrs = zfcp_sysfs_sdev_attrs,
.track_queue_depth = 1,
.supported_mode = MODE_INITIATOR,
};
/**
* zfcp_scsi_adapter_register - Register SCSI and FC host with SCSI midlayer
* @adapter: The zfcp adapter to register with the SCSI midlayer
*/
int zfcp_scsi_adapter_register(struct zfcp_adapter *adapter)
{
struct ccw_dev_id dev_id;
if (adapter->scsi_host)
return 0;
ccw_device_get_id(adapter->ccw_device, &dev_id);
/* register adapter as SCSI host with mid layer of SCSI stack */
adapter->scsi_host = scsi_host_alloc(&zfcp_scsi_host_template,
sizeof (struct zfcp_adapter *));
if (!adapter->scsi_host) {
dev_err(&adapter->ccw_device->dev,
"Registering the FCP device with the "
"SCSI stack failed\n");
return -EIO;
}
/* tell the SCSI stack some characteristics of this adapter */
adapter->scsi_host->max_id = 511;
adapter->scsi_host->max_lun = 0xFFFFFFFF;
adapter->scsi_host->max_channel = 0;
adapter->scsi_host->unique_id = dev_id.devno;
adapter->scsi_host->max_cmd_len = 16; /* in struct fcp_cmnd */
adapter->scsi_host->transportt = zfcp_scsi_transport_template;
adapter->scsi_host->hostdata[0] = (unsigned long) adapter;
if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) {
scsi_host_put(adapter->scsi_host);
return -EIO;
}
return 0;
}
/**
* zfcp_scsi_adapter_unregister - Unregister SCSI and FC host from SCSI midlayer
* @adapter: The zfcp adapter to unregister.
*/
void zfcp_scsi_adapter_unregister(struct zfcp_adapter *adapter)
{
struct Scsi_Host *shost;
struct zfcp_port *port;
shost = adapter->scsi_host;
if (!shost)
return;
read_lock_irq(&adapter->port_list_lock);
list_for_each_entry(port, &adapter->port_list, list)
port->rport = NULL;
read_unlock_irq(&adapter->port_list_lock);
fc_remove_host(shost);
scsi_remove_host(shost);
scsi_host_put(shost);
adapter->scsi_host = NULL;
}
static struct fc_host_statistics*
zfcp_scsi_init_fc_host_stats(struct zfcp_adapter *adapter)
{
struct fc_host_statistics *fc_stats;
if (!adapter->fc_stats) {
fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL);
if (!fc_stats)
return NULL;
adapter->fc_stats = fc_stats; /* freed in adapter_release */
}
memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats));
return adapter->fc_stats;
}
static void zfcp_scsi_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
struct fsf_qtcb_bottom_port *data,
struct fsf_qtcb_bottom_port *old)
{
fc_stats->seconds_since_last_reset =
data->seconds_since_last_reset - old->seconds_since_last_reset;
fc_stats->tx_frames = data->tx_frames - old->tx_frames;
fc_stats->tx_words = data->tx_words - old->tx_words;
fc_stats->rx_frames = data->rx_frames - old->rx_frames;
fc_stats->rx_words = data->rx_words - old->rx_words;
fc_stats->lip_count = data->lip - old->lip;
fc_stats->nos_count = data->nos - old->nos;
fc_stats->error_frames = data->error_frames - old->error_frames;
fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames;
fc_stats->link_failure_count = data->link_failure - old->link_failure;
fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync;
fc_stats->loss_of_signal_count =
data->loss_of_signal - old->loss_of_signal;
fc_stats->prim_seq_protocol_err_count =
data->psp_error_counts - old->psp_error_counts;
fc_stats->invalid_tx_word_count =
data->invalid_tx_words - old->invalid_tx_words;
fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs;
fc_stats->fcp_input_requests =
data->input_requests - old->input_requests;
fc_stats->fcp_output_requests =
data->output_requests - old->output_requests;
fc_stats->fcp_control_requests =
data->control_requests - old->control_requests;
fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb;
fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb;
}
static void zfcp_scsi_set_fc_host_stats(struct fc_host_statistics *fc_stats,
struct fsf_qtcb_bottom_port *data)
{
fc_stats->seconds_since_last_reset = data->seconds_since_last_reset;
fc_stats->tx_frames = data->tx_frames;
fc_stats->tx_words = data->tx_words;
fc_stats->rx_frames = data->rx_frames;
fc_stats->rx_words = data->rx_words;
fc_stats->lip_count = data->lip;
fc_stats->nos_count = data->nos;
fc_stats->error_frames = data->error_frames;
fc_stats->dumped_frames = data->dumped_frames;
fc_stats->link_failure_count = data->link_failure;
fc_stats->loss_of_sync_count = data->loss_of_sync;
fc_stats->loss_of_signal_count = data->loss_of_signal;
fc_stats->prim_seq_protocol_err_count = data->psp_error_counts;
fc_stats->invalid_tx_word_count = data->invalid_tx_words;
fc_stats->invalid_crc_count = data->invalid_crcs;
fc_stats->fcp_input_requests = data->input_requests;
fc_stats->fcp_output_requests = data->output_requests;
fc_stats->fcp_control_requests = data->control_requests;
fc_stats->fcp_input_megabytes = data->input_mb;
fc_stats->fcp_output_megabytes = data->output_mb;
}
unsigned long hp_sdc_put(void)
{
hp_sdc_transaction *curr;
uint8_t act;
int idx, curridx;
int limit = 0;
write_lock(&hp_sdc.lock);
/* If i8042 buffers are full, we cannot do anything that
requires output, so we skip to the administrativa. */
if (hp_sdc.ibf) {
hp_sdc_status_in8();
if (hp_sdc.ibf)
goto finish;
}
anew:
/* See if we are in the middle of a sequence. */
if (hp_sdc.wcurr < 0)
hp_sdc.wcurr = 0;
read_lock_irq(&hp_sdc.rtq_lock);
if (hp_sdc.rcurr == hp_sdc.wcurr)
hp_sdc.wcurr++;
read_unlock_irq(&hp_sdc.rtq_lock);
if (hp_sdc.wcurr >= HP_SDC_QUEUE_LEN)
hp_sdc.wcurr = 0;
curridx = hp_sdc.wcurr;
if (hp_sdc.tq[curridx] != NULL)
goto start;
while (++curridx != hp_sdc.wcurr) {
if (curridx >= HP_SDC_QUEUE_LEN) {
curridx = -1; /* Wrap to top */
continue;
}
read_lock_irq(&hp_sdc.rtq_lock);
if (hp_sdc.rcurr == curridx) {
read_unlock_irq(&hp_sdc.rtq_lock);
continue;
}
read_unlock_irq(&hp_sdc.rtq_lock);
if (hp_sdc.tq[curridx] != NULL)
break; /* Found one. */
}
if (curridx == hp_sdc.wcurr) { /* There's nothing queued to do. */
curridx = -1;
}
hp_sdc.wcurr = curridx;
start:
/* Check to see if the interrupt mask needs to be set. */
if (hp_sdc.set_im) {
hp_sdc_status_out8(hp_sdc.im | HP_SDC_CMD_SET_IM);
hp_sdc.set_im = 0;
goto finish;
}
if (hp_sdc.wcurr == -1)
goto done;
curr = hp_sdc.tq[curridx];
idx = curr->actidx;
if (curr->actidx >= curr->endidx) {
hp_sdc.tq[curridx] = NULL;
/* Interleave outbound data between the transactions. */
hp_sdc.wcurr++;
if (hp_sdc.wcurr >= HP_SDC_QUEUE_LEN)
hp_sdc.wcurr = 0;
goto finish;
}
act = curr->seq[idx];
idx++;
if (curr->idx >= curr->endidx) {
if (act & HP_SDC_ACT_DEALLOC)
kfree(curr);
hp_sdc.tq[curridx] = NULL;
/* Interleave outbound data between the transactions. */
hp_sdc.wcurr++;
if (hp_sdc.wcurr >= HP_SDC_QUEUE_LEN)
hp_sdc.wcurr = 0;
goto finish;
}
while (act & HP_SDC_ACT_PRECMD) {
if (curr->idx != idx) {
idx++;
act &= ~HP_SDC_ACT_PRECMD;
break;
}
hp_sdc_status_out8(curr->seq[idx]);
curr->idx++;
/* act finished? */
if ((act & HP_SDC_ACT_DURING) == HP_SDC_ACT_PRECMD)
goto actdone;
/* skip quantity field if data-out sequence follows. */
if (act & HP_SDC_ACT_DATAOUT)
curr->idx++;
goto finish;
}
if (act & HP_SDC_ACT_DATAOUT) {
int qty;
qty = curr->seq[idx];
idx++;
if (curr->idx - idx < qty) {
hp_sdc_data_out8(curr->seq[curr->idx]);
curr->idx++;
/* act finished? */
if (curr->idx - idx >= qty &&
(act & HP_SDC_ACT_DURING) == HP_SDC_ACT_DATAOUT)
goto actdone;
goto finish;
}
idx += qty;
act &= ~HP_SDC_ACT_DATAOUT;
} else
while (act & HP_SDC_ACT_DATAREG) {
int mask;
uint8_t w7[4];
mask = curr->seq[idx];
if (idx != curr->idx) {
idx++;
idx += !!(mask & 1);
idx += !!(mask & 2);
idx += !!(mask & 4);
idx += !!(mask & 8);
act &= ~HP_SDC_ACT_DATAREG;
break;
}
w7[0] = (mask & 1) ? curr->seq[++idx] : hp_sdc.r7[0];
w7[1] = (mask & 2) ? curr->seq[++idx] : hp_sdc.r7[1];
w7[2] = (mask & 4) ? curr->seq[++idx] : hp_sdc.r7[2];
w7[3] = (mask & 8) ? curr->seq[++idx] : hp_sdc.r7[3];
if (hp_sdc.wi > 0x73 || hp_sdc.wi < 0x70 ||
w7[hp_sdc.wi - 0x70] == hp_sdc.r7[hp_sdc.wi - 0x70]) {
int i = 0;
/* Need to point the write index register */
while (i < 4 && w7[i] == hp_sdc.r7[i])
i++;
if (i < 4) {
hp_sdc_status_out8(HP_SDC_CMD_SET_D0 + i);
hp_sdc.wi = 0x70 + i;
goto finish;
}
idx++;
if ((act & HP_SDC_ACT_DURING) == HP_SDC_ACT_DATAREG)
goto actdone;
curr->idx = idx;
act &= ~HP_SDC_ACT_DATAREG;
break;
}
hp_sdc_data_out8(w7[hp_sdc.wi - 0x70]);
hp_sdc.r7[hp_sdc.wi - 0x70] = w7[hp_sdc.wi - 0x70];
hp_sdc.wi++; /* write index register autoincrements */
{
int i = 0;
while ((i < 4) && w7[i] == hp_sdc.r7[i])
i++;
if (i >= 4) {
curr->idx = idx + 1;
if ((act & HP_SDC_ACT_DURING) ==
HP_SDC_ACT_DATAREG)
goto actdone;
}
}
goto finish;
}
/* We don't go any further in the command if there is a pending read,
because we don't want interleaved results. */
read_lock_irq(&hp_sdc.rtq_lock);
if (hp_sdc.rcurr >= 0) {
read_unlock_irq(&hp_sdc.rtq_lock);
goto finish;
}
read_unlock_irq(&hp_sdc.rtq_lock);
if (act & HP_SDC_ACT_POSTCMD) {
uint8_t postcmd;
/* curr->idx should == idx at this point. */
postcmd = curr->seq[idx];
curr->idx++;
if (act & HP_SDC_ACT_DATAIN) {
/* Start a new read */
hp_sdc.rqty = curr->seq[curr->idx];
do_gettimeofday(&hp_sdc.rtv);
curr->idx++;
/* Still need to lock here in case of spurious irq. */
write_lock_irq(&hp_sdc.rtq_lock);
hp_sdc.rcurr = curridx;
write_unlock_irq(&hp_sdc.rtq_lock);
hp_sdc_status_out8(postcmd);
goto finish;
}
hp_sdc_status_out8(postcmd);
goto actdone;
}
actdone:
if (act & HP_SDC_ACT_SEMAPHORE)
up(curr->act.semaphore);
else if (act & HP_SDC_ACT_CALLBACK)
curr->act.irqhook(0,NULL,0,0);
if (curr->idx >= curr->endidx) { /* This transaction is over. */
if (act & HP_SDC_ACT_DEALLOC)
kfree(curr);
hp_sdc.tq[curridx] = NULL;
} else {
curr->actidx = idx + 1;
curr->idx = idx + 2;
}
/* Interleave outbound data between the transactions. */
hp_sdc.wcurr++;
if (hp_sdc.wcurr >= HP_SDC_QUEUE_LEN)
hp_sdc.wcurr = 0;
finish:
/* If by some quirk IBF has cleared and our ISR has run to
see that that has happened, do it all again. */
if (!hp_sdc.ibf && limit++ < 20)
goto anew;
done:
if (hp_sdc.wcurr >= 0)
tasklet_schedule(&hp_sdc.task);
write_unlock(&hp_sdc.lock);
return 0;
}
/**
* zfcp_port_enqueue - enqueue port to port list of adapter
* @adapter: adapter where remote port is added
* @wwpn: WWPN of the remote port to be enqueued
* @status: initial status for the port
* @d_id: destination id of the remote port to be enqueued
* Returns: pointer to enqueued port on success, ERR_PTR on error
* Locks: config_sema must be held to serialize changes to the port list
*
* All port internal structures are set up and the sysfs entry is generated.
* d_id is used to enqueue ports with a well known address like the Directory
* Service for nameserver lookup.
*/
struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn,
u32 status, u32 d_id)
{
struct zfcp_port *port;
int retval;
port = kzalloc(sizeof(struct zfcp_port), GFP_KERNEL);
if (!port)
return ERR_PTR(-ENOMEM);
init_waitqueue_head(&port->remove_wq);
INIT_LIST_HEAD(&port->unit_list_head);
INIT_WORK(&port->gid_pn_work, zfcp_erp_port_strategy_open_lookup);
port->adapter = adapter;
port->d_id = d_id;
port->wwpn = wwpn;
/* mark port unusable as long as sysfs registration is not complete */
atomic_set_mask(status | ZFCP_STATUS_COMMON_REMOVE, &port->status);
atomic_set(&port->refcount, 0);
dev_set_name(&port->sysfs_device, "0x%016llx",
(unsigned long long)wwpn);
port->sysfs_device.parent = &adapter->ccw_device->dev;
port->sysfs_device.release = zfcp_sysfs_port_release;
dev_set_drvdata(&port->sysfs_device, port);
read_lock_irq(&zfcp_data.config_lock);
if (!(status & ZFCP_STATUS_PORT_NO_WWPN))
if (zfcp_get_port_by_wwpn(adapter, wwpn)) {
read_unlock_irq(&zfcp_data.config_lock);
goto err_out_free;
}
read_unlock_irq(&zfcp_data.config_lock);
if (device_register(&port->sysfs_device))
goto err_out_free;
retval = sysfs_create_group(&port->sysfs_device.kobj,
&zfcp_sysfs_port_attrs);
if (retval) {
device_unregister(&port->sysfs_device);
goto err_out;
}
zfcp_port_get(port);
write_lock_irq(&zfcp_data.config_lock);
list_add_tail(&port->list, &adapter->port_list_head);
atomic_clear_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status);
atomic_set_mask(ZFCP_STATUS_COMMON_RUNNING, &port->status);
write_unlock_irq(&zfcp_data.config_lock);
zfcp_adapter_get(adapter);
return port;
err_out_free:
kfree(port);
err_out:
return ERR_PTR(-EINVAL);
}
/**
* zfcp_unit_enqueue - enqueue unit to unit list of a port.
* @port: pointer to port where unit is added
* @fcp_lun: FCP LUN of unit to be enqueued
* Returns: pointer to enqueued unit on success, ERR_PTR on error
* Locks: config_sema must be held to serialize changes to the unit list
*
* Sets up some unit internal structures and creates sysfs entry.
*/
struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, u64 fcp_lun)
{
struct zfcp_unit *unit;
unit = kzalloc(sizeof(struct zfcp_unit), GFP_KERNEL);
if (!unit)
return ERR_PTR(-ENOMEM);
atomic_set(&unit->refcount, 0);
init_waitqueue_head(&unit->remove_wq);
unit->port = port;
unit->fcp_lun = fcp_lun;
dev_set_name(&unit->sysfs_device, "0x%016llx",
(unsigned long long) fcp_lun);
unit->sysfs_device.parent = &port->sysfs_device;
unit->sysfs_device.release = zfcp_sysfs_unit_release;
dev_set_drvdata(&unit->sysfs_device, unit);
/* mark unit unusable as long as sysfs registration is not complete */
atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status);
spin_lock_init(&unit->latencies.lock);
unit->latencies.write.channel.min = 0xFFFFFFFF;
unit->latencies.write.fabric.min = 0xFFFFFFFF;
unit->latencies.read.channel.min = 0xFFFFFFFF;
unit->latencies.read.fabric.min = 0xFFFFFFFF;
unit->latencies.cmd.channel.min = 0xFFFFFFFF;
unit->latencies.cmd.fabric.min = 0xFFFFFFFF;
read_lock_irq(&zfcp_data.config_lock);
if (zfcp_get_unit_by_lun(port, fcp_lun)) {
read_unlock_irq(&zfcp_data.config_lock);
goto err_out_free;
}
read_unlock_irq(&zfcp_data.config_lock);
if (device_register(&unit->sysfs_device))
goto err_out_free;
if (sysfs_create_group(&unit->sysfs_device.kobj,
&zfcp_sysfs_unit_attrs)) {
device_unregister(&unit->sysfs_device);
return ERR_PTR(-EIO);
}
zfcp_unit_get(unit);
write_lock_irq(&zfcp_data.config_lock);
list_add_tail(&unit->list, &port->unit_list_head);
atomic_clear_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status);
atomic_set_mask(ZFCP_STATUS_COMMON_RUNNING, &unit->status);
write_unlock_irq(&zfcp_data.config_lock);
zfcp_port_get(port);
return unit;
err_out_free:
kfree(unit);
return ERR_PTR(-EINVAL);
}
static void zfcp_scsi_forget_cmnds(struct zfcp_scsi_dev *zsdev, u8 tm_flags)
{
struct zfcp_adapter *adapter = zsdev->port->adapter;
struct zfcp_scsi_req_filter filter = {
.tmf_scope = FCP_TMF_TGT_RESET,
.port_handle = zsdev->port->handle,
};
unsigned long flags;
if (tm_flags == FCP_TMF_LUN_RESET) {
filter.tmf_scope = FCP_TMF_LUN_RESET;
filter.lun_handle = zsdev->lun_handle;
}
/*
* abort_lock secures against other processings - in the abort-function
* and normal cmnd-handler - of (struct zfcp_fsf_req *)->data
*/
write_lock_irqsave(&adapter->abort_lock, flags);
zfcp_reqlist_apply_for_all(adapter->req_list, zfcp_scsi_forget_cmnd,
&filter);
write_unlock_irqrestore(&adapter->abort_lock, flags);
}
static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
struct zfcp_fsf_req *fsf_req = NULL;
int retval = SUCCESS, ret;
int retry = 3;
while (retry--) {
fsf_req = zfcp_fsf_fcp_task_mgmt(scpnt, tm_flags);
if (fsf_req)
break;
zfcp_erp_wait(adapter);
ret = fc_block_scsi_eh(scpnt);
if (ret)
return ret;
if (!(atomic_read(&adapter->status) &
ZFCP_STATUS_COMMON_RUNNING)) {
zfcp_dbf_scsi_devreset("nres", scpnt, tm_flags);
return SUCCESS;
}
}
if (!fsf_req)
return FAILED;
wait_for_completion(&fsf_req->completion);
if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
zfcp_dbf_scsi_devreset("fail", scpnt, tm_flags);
retval = FAILED;
} else {
zfcp_dbf_scsi_devreset("okay", scpnt, tm_flags);
zfcp_scsi_forget_cmnds(zfcp_sdev, tm_flags);
}
zfcp_fsf_req_free(fsf_req);
return retval;
}
static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt)
{
return zfcp_task_mgmt_function(scpnt, FCP_TMF_LUN_RESET);
}
static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
{
return zfcp_task_mgmt_function(scpnt, FCP_TMF_TGT_RESET);
}
static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
int ret;
zfcp_erp_adapter_reopen(adapter, 0, "schrh_1");
zfcp_erp_wait(adapter);
ret = fc_block_scsi_eh(scpnt);
if (ret)
return ret;
return SUCCESS;
}
struct scsi_transport_template *zfcp_scsi_transport_template;
static struct scsi_host_template zfcp_scsi_host_template = {
.module = THIS_MODULE,
.name = "zfcp",
.queuecommand = zfcp_scsi_queuecommand,
.eh_abort_handler = zfcp_scsi_eh_abort_handler,
.eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler,
.eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler,
.eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler,
.slave_alloc = zfcp_scsi_slave_alloc,
.slave_configure = zfcp_scsi_slave_configure,
.slave_destroy = zfcp_scsi_slave_destroy,
.change_queue_depth = scsi_change_queue_depth,
.proc_name = "zfcp",
.can_queue = 4096,
.this_id = -1,
.sg_tablesize = (((QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
* ZFCP_QDIO_MAX_SBALS_PER_REQ) - 2),
/* GCD, adjusted later */
.max_sectors = (((QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
* ZFCP_QDIO_MAX_SBALS_PER_REQ) - 2) * 8,
/* GCD, adjusted later */
.dma_boundary = ZFCP_QDIO_SBALE_LEN - 1,
.use_clustering = 1,
.shost_attrs = zfcp_sysfs_shost_attrs,
.sdev_attrs = zfcp_sysfs_sdev_attrs,
.track_queue_depth = 1,
};
/**
* zfcp_scsi_adapter_register - Register SCSI and FC host with SCSI midlayer
* @adapter: The zfcp adapter to register with the SCSI midlayer
*/
int zfcp_scsi_adapter_register(struct zfcp_adapter *adapter)
{
struct ccw_dev_id dev_id;
if (adapter->scsi_host)
return 0;
ccw_device_get_id(adapter->ccw_device, &dev_id);
/* register adapter as SCSI host with mid layer of SCSI stack */
adapter->scsi_host = scsi_host_alloc(&zfcp_scsi_host_template,
sizeof (struct zfcp_adapter *));
if (!adapter->scsi_host) {
dev_err(&adapter->ccw_device->dev,
"Registering the FCP device with the "
"SCSI stack failed\n");
return -EIO;
}
/* tell the SCSI stack some characteristics of this adapter */
adapter->scsi_host->max_id = 511;
adapter->scsi_host->max_lun = 0xFFFFFFFF;
adapter->scsi_host->max_channel = 0;
adapter->scsi_host->unique_id = dev_id.devno;
adapter->scsi_host->max_cmd_len = 16; /* in struct fcp_cmnd */
adapter->scsi_host->transportt = zfcp_scsi_transport_template;
adapter->scsi_host->hostdata[0] = (unsigned long) adapter;
if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) {
scsi_host_put(adapter->scsi_host);
return -EIO;
}
return 0;
}
/**
* zfcp_scsi_adapter_unregister - Unregister SCSI and FC host from SCSI midlayer
* @adapter: The zfcp adapter to unregister.
*/
void zfcp_scsi_adapter_unregister(struct zfcp_adapter *adapter)
{
struct Scsi_Host *shost;
struct zfcp_port *port;
shost = adapter->scsi_host;
if (!shost)
return;
read_lock_irq(&adapter->port_list_lock);
list_for_each_entry(port, &adapter->port_list, list)
port->rport = NULL;
read_unlock_irq(&adapter->port_list_lock);
fc_remove_host(shost);
scsi_remove_host(shost);
scsi_host_put(shost);
adapter->scsi_host = NULL;
}
static struct fc_host_statistics*
zfcp_init_fc_host_stats(struct zfcp_adapter *adapter)
{
struct fc_host_statistics *fc_stats;
if (!adapter->fc_stats) {
fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL);
if (!fc_stats)
return NULL;
adapter->fc_stats = fc_stats; /* freed in adapter_release */
}
memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats));
return adapter->fc_stats;
}
static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
struct fsf_qtcb_bottom_port *data,
struct fsf_qtcb_bottom_port *old)
{
fc_stats->seconds_since_last_reset =
data->seconds_since_last_reset - old->seconds_since_last_reset;
fc_stats->tx_frames = data->tx_frames - old->tx_frames;
fc_stats->tx_words = data->tx_words - old->tx_words;
fc_stats->rx_frames = data->rx_frames - old->rx_frames;
fc_stats->rx_words = data->rx_words - old->rx_words;
fc_stats->lip_count = data->lip - old->lip;
fc_stats->nos_count = data->nos - old->nos;
fc_stats->error_frames = data->error_frames - old->error_frames;
fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames;
fc_stats->link_failure_count = data->link_failure - old->link_failure;
fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync;
fc_stats->loss_of_signal_count =
data->loss_of_signal - old->loss_of_signal;
fc_stats->prim_seq_protocol_err_count =
data->psp_error_counts - old->psp_error_counts;
fc_stats->invalid_tx_word_count =
data->invalid_tx_words - old->invalid_tx_words;
fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs;
fc_stats->fcp_input_requests =
data->input_requests - old->input_requests;
fc_stats->fcp_output_requests =
data->output_requests - old->output_requests;
fc_stats->fcp_control_requests =
data->control_requests - old->control_requests;
fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb;
fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb;
}
static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats,
struct fsf_qtcb_bottom_port *data)
{
fc_stats->seconds_since_last_reset = data->seconds_since_last_reset;
fc_stats->tx_frames = data->tx_frames;
fc_stats->tx_words = data->tx_words;
fc_stats->rx_frames = data->rx_frames;
fc_stats->rx_words = data->rx_words;
fc_stats->lip_count = data->lip;
fc_stats->nos_count = data->nos;
fc_stats->error_frames = data->error_frames;
fc_stats->dumped_frames = data->dumped_frames;
fc_stats->link_failure_count = data->link_failure;
fc_stats->loss_of_sync_count = data->loss_of_sync;
fc_stats->loss_of_signal_count = data->loss_of_signal;
fc_stats->prim_seq_protocol_err_count = data->psp_error_counts;
fc_stats->invalid_tx_word_count = data->invalid_tx_words;
fc_stats->invalid_crc_count = data->invalid_crcs;
fc_stats->fcp_input_requests = data->input_requests;
fc_stats->fcp_output_requests = data->output_requests;
fc_stats->fcp_control_requests = data->control_requests;
fc_stats->fcp_input_megabytes = data->input_mb;
fc_stats->fcp_output_megabytes = data->output_mb;
}
/**
* zfcp_port_enqueue - enqueue port to port list of adapter
* @adapter: adapter where remote port is added
* @wwpn: WWPN of the remote port to be enqueued
* @status: initial status for the port
* @d_id: destination id of the remote port to be enqueued
* Returns: pointer to enqueued port on success, ERR_PTR on error
* Locks: config_sema must be held to serialize changes to the port list
*
* All port internal structures are set up and the sysfs entry is generated.
* d_id is used to enqueue ports with a well known address like the Directory
* Service for nameserver lookup.
*/
struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn,
u32 status, u32 d_id)
{
struct zfcp_port *port;
int retval;
char *bus_id;
port = kzalloc(sizeof(struct zfcp_port), GFP_KERNEL);
if (!port)
return ERR_PTR(-ENOMEM);
init_waitqueue_head(&port->remove_wq);
INIT_LIST_HEAD(&port->unit_list_head);
INIT_LIST_HEAD(&port->unit_remove_lh);
port->adapter = adapter;
port->d_id = d_id;
port->wwpn = wwpn;
/* mark port unusable as long as sysfs registration is not complete */
atomic_set_mask(status | ZFCP_STATUS_COMMON_REMOVE, &port->status);
atomic_set(&port->refcount, 0);
if (status & ZFCP_STATUS_PORT_WKA) {
switch (d_id) {
case ZFCP_DID_DIRECTORY_SERVICE:
bus_id = "directory";
break;
case ZFCP_DID_MANAGEMENT_SERVICE:
bus_id = "management";
break;
case ZFCP_DID_KEY_DISTRIBUTION_SERVICE:
bus_id = "key_distribution";
break;
case ZFCP_DID_ALIAS_SERVICE:
bus_id = "alias";
break;
case ZFCP_DID_TIME_SERVICE:
bus_id = "time";
break;
default:
kfree(port);
return ERR_PTR(-EINVAL);
}
snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE, "%s", bus_id);
port->sysfs_device.parent = &adapter->generic_services;
} else {
snprintf(port->sysfs_device.bus_id,
BUS_ID_SIZE, "0x%016llx", wwpn);
port->sysfs_device.parent = &adapter->ccw_device->dev;
}
port->sysfs_device.release = zfcp_sysfs_port_release;
dev_set_drvdata(&port->sysfs_device, port);
read_lock_irq(&zfcp_data.config_lock);
if (!(status & ZFCP_STATUS_PORT_NO_WWPN))
if (zfcp_get_port_by_wwpn(adapter, wwpn)) {
read_unlock_irq(&zfcp_data.config_lock);
goto err_out_free;
}
read_unlock_irq(&zfcp_data.config_lock);
if (device_register(&port->sysfs_device))
goto err_out_free;
if (status & ZFCP_STATUS_PORT_WKA)
retval = sysfs_create_group(&port->sysfs_device.kobj,
&zfcp_sysfs_ns_port_attrs);
else
retval = sysfs_create_group(&port->sysfs_device.kobj,
&zfcp_sysfs_port_attrs);
if (retval) {
device_unregister(&port->sysfs_device);
goto err_out;
}
zfcp_port_get(port);
write_lock_irq(&zfcp_data.config_lock);
list_add_tail(&port->list, &adapter->port_list_head);
atomic_clear_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status);
atomic_set_mask(ZFCP_STATUS_COMMON_RUNNING, &port->status);
if (d_id == ZFCP_DID_DIRECTORY_SERVICE)
if (!adapter->nameserver_port)
adapter->nameserver_port = port;
adapter->ports++;
write_unlock_irq(&zfcp_data.config_lock);
zfcp_adapter_get(adapter);
return port;
err_out_free:
kfree(port);
err_out:
return ERR_PTR(-EINVAL);
}
