|
|
|
@ -29,48 +29,14 @@
|
|
|
|
|
#include "zfcp_ext.h"
|
|
|
|
|
|
|
|
|
|
static char *device;
|
|
|
|
|
/*********************** FUNCTION PROTOTYPES *********************************/
|
|
|
|
|
|
|
|
|
|
/* written against the module interface */
|
|
|
|
|
static int __init zfcp_module_init(void);
|
|
|
|
|
|
|
|
|
|
/*********************** KERNEL/MODULE PARAMETERS ***************************/
|
|
|
|
|
|
|
|
|
|
/* declare driver module init/cleanup functions */
|
|
|
|
|
module_init(zfcp_module_init);
|
|
|
|
|
|
|
|
|
|
MODULE_AUTHOR("IBM Deutschland Entwicklung GmbH - linux390@de.ibm.com");
|
|
|
|
|
MODULE_DESCRIPTION
|
|
|
|
|
("FCP (SCSI over Fibre Channel) HBA driver for IBM System z9 and zSeries");
|
|
|
|
|
MODULE_DESCRIPTION("FCP HBA driver");
|
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
|
|
|
|
module_param(device, charp, 0400);
|
|
|
|
|
MODULE_PARM_DESC(device, "specify initial device");
|
|
|
|
|
|
|
|
|
|
/****************************************************************/
|
|
|
|
|
/************** Functions without logging ***********************/
|
|
|
|
|
/****************************************************************/
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
_zfcp_hex_dump(char *addr, int count)
|
|
|
|
|
{
|
|
|
|
|
int i;
|
|
|
|
|
for (i = 0; i < count; i++) {
|
|
|
|
|
printk("%02x", addr[i]);
|
|
|
|
|
if ((i % 4) == 3)
|
|
|
|
|
printk(" ");
|
|
|
|
|
if ((i % 32) == 31)
|
|
|
|
|
printk("\n");
|
|
|
|
|
}
|
|
|
|
|
if (((i-1) % 32) != 31)
|
|
|
|
|
printk("\n");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/****************************************************************/
|
|
|
|
|
/****** Functions to handle the request ID hash table ********/
|
|
|
|
|
/****************************************************************/
|
|
|
|
|
|
|
|
|
|
static int zfcp_reqlist_alloc(struct zfcp_adapter *adapter)
|
|
|
|
|
{
|
|
|
|
|
int idx;
|
|
|
|
@ -85,11 +51,12 @@ static int zfcp_reqlist_alloc(struct zfcp_adapter *adapter)
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void zfcp_reqlist_free(struct zfcp_adapter *adapter)
|
|
|
|
|
{
|
|
|
|
|
kfree(adapter->req_list);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* zfcp_reqlist_isempty - is the request list empty
|
|
|
|
|
* @adapter: pointer to struct zfcp_adapter
|
|
|
|
|
*
|
|
|
|
|
* Returns: true if list is empty, false otherwise
|
|
|
|
|
*/
|
|
|
|
|
int zfcp_reqlist_isempty(struct zfcp_adapter *adapter)
|
|
|
|
|
{
|
|
|
|
|
unsigned int idx;
|
|
|
|
@ -100,62 +67,58 @@ int zfcp_reqlist_isempty(struct zfcp_adapter *adapter)
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/****************************************************************/
|
|
|
|
|
/************** Uncategorised Functions *************************/
|
|
|
|
|
/****************************************************************/
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* zfcp_device_setup - setup function
|
|
|
|
|
* @str: pointer to parameter string
|
|
|
|
|
*
|
|
|
|
|
* Parse "device=..." parameter string.
|
|
|
|
|
*/
|
|
|
|
|
static int __init
|
|
|
|
|
zfcp_device_setup(char *devstr)
|
|
|
|
|
static int __init zfcp_device_setup(char *devstr)
|
|
|
|
|
{
|
|
|
|
|
char *tmp, *str;
|
|
|
|
|
size_t len;
|
|
|
|
|
char *token;
|
|
|
|
|
char *str;
|
|
|
|
|
|
|
|
|
|
if (!devstr)
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
len = strlen(devstr) + 1;
|
|
|
|
|
str = kmalloc(len, GFP_KERNEL);
|
|
|
|
|
if (!str) {
|
|
|
|
|
pr_err("zfcp: Could not allocate memory for "
|
|
|
|
|
"device parameter string, device not attached.\n");
|
|
|
|
|
/* duplicate devstr and keep the original for sysfs presentation*/
|
|
|
|
|
str = kmalloc(strlen(devstr) + 1, GFP_KERNEL);
|
|
|
|
|
if (!str)
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
memcpy(str, devstr, len);
|
|
|
|
|
|
|
|
|
|
tmp = strchr(str, ',');
|
|
|
|
|
if (!tmp)
|
|
|
|
|
goto err_out;
|
|
|
|
|
*tmp++ = '\0';
|
|
|
|
|
strncpy(zfcp_data.init_busid, str, BUS_ID_SIZE);
|
|
|
|
|
zfcp_data.init_busid[BUS_ID_SIZE-1] = '\0';
|
|
|
|
|
strcpy(str, devstr);
|
|
|
|
|
|
|
|
|
|
zfcp_data.init_wwpn = simple_strtoull(tmp, &tmp, 0);
|
|
|
|
|
if (*tmp++ != ',')
|
|
|
|
|
token = strsep(&str, ",");
|
|
|
|
|
if (!token || strlen(token) >= BUS_ID_SIZE)
|
|
|
|
|
goto err_out;
|
|
|
|
|
if (*tmp == '\0')
|
|
|
|
|
strncpy(zfcp_data.init_busid, token, BUS_ID_SIZE);
|
|
|
|
|
|
|
|
|
|
token = strsep(&str, ",");
|
|
|
|
|
if (!token || strict_strtoull(token, 0, &zfcp_data.init_wwpn))
|
|
|
|
|
goto err_out;
|
|
|
|
|
|
|
|
|
|
zfcp_data.init_fcp_lun = simple_strtoull(tmp, &tmp, 0);
|
|
|
|
|
if (*tmp != '\0')
|
|
|
|
|
token = strsep(&str, ",");
|
|
|
|
|
if (!token || strict_strtoull(token, 0, &zfcp_data.init_fcp_lun))
|
|
|
|
|
goto err_out;
|
|
|
|
|
|
|
|
|
|
kfree(str);
|
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
|
|
err_out:
|
|
|
|
|
pr_err("zfcp: Parse error for device parameter string %s, "
|
|
|
|
|
"device not attached.\n", str);
|
|
|
|
|
kfree(str);
|
|
|
|
|
pr_err("zfcp: Parse error for device parameter string %s, "
|
|
|
|
|
"device not attached.\n", devstr);
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void __init
|
|
|
|
|
zfcp_init_device_configure(void)
|
|
|
|
|
static struct zfcp_adapter *zfcp_get_adapter_by_busid(char *bus_id)
|
|
|
|
|
{
|
|
|
|
|
struct zfcp_adapter *adapter;
|
|
|
|
|
|
|
|
|
|
list_for_each_entry(adapter, &zfcp_data.adapter_list_head, list)
|
|
|
|
|
if ((strncmp(bus_id, adapter->ccw_device->dev.bus_id,
|
|
|
|
|
BUS_ID_SIZE) == 0) &&
|
|
|
|
|
!(atomic_read(&adapter->status) &
|
|
|
|
|
ZFCP_STATUS_COMMON_REMOVE))
|
|
|
|
|
return adapter;
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void __init zfcp_init_device_configure(void)
|
|
|
|
|
{
|
|
|
|
|
struct zfcp_adapter *adapter;
|
|
|
|
|
struct zfcp_port *port;
|
|
|
|
@ -168,92 +131,72 @@ zfcp_init_device_configure(void)
|
|
|
|
|
zfcp_adapter_get(adapter);
|
|
|
|
|
read_unlock_irq(&zfcp_data.config_lock);
|
|
|
|
|
|
|
|
|
|
if (adapter == NULL)
|
|
|
|
|
if (!adapter)
|
|
|
|
|
goto out_adapter;
|
|
|
|
|
port = zfcp_port_enqueue(adapter, zfcp_data.init_wwpn, 0, 0);
|
|
|
|
|
if (!port)
|
|
|
|
|
if (IS_ERR(port))
|
|
|
|
|
goto out_port;
|
|
|
|
|
unit = zfcp_unit_enqueue(port, zfcp_data.init_fcp_lun);
|
|
|
|
|
if (!unit)
|
|
|
|
|
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:
|
|
|
|
|
out_unit:
|
|
|
|
|
zfcp_port_put(port);
|
|
|
|
|
out_port:
|
|
|
|
|
out_port:
|
|
|
|
|
zfcp_adapter_put(adapter);
|
|
|
|
|
out_adapter:
|
|
|
|
|
out_adapter:
|
|
|
|
|
up(&zfcp_data.config_sema);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int calc_alignment(int size)
|
|
|
|
|
static struct kmem_cache *zfcp_cache_create(int size, char *name)
|
|
|
|
|
{
|
|
|
|
|
int align = 1;
|
|
|
|
|
|
|
|
|
|
if (!size)
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
while ((size - align) > 0)
|
|
|
|
|
align <<= 1;
|
|
|
|
|
|
|
|
|
|
return align;
|
|
|
|
|
return kmem_cache_create(name , size, align, 0, NULL);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int __init
|
|
|
|
|
zfcp_module_init(void)
|
|
|
|
|
static int __init zfcp_module_init(void)
|
|
|
|
|
{
|
|
|
|
|
int retval = -ENOMEM;
|
|
|
|
|
int size, align;
|
|
|
|
|
|
|
|
|
|
size = sizeof(struct zfcp_fsf_req_qtcb);
|
|
|
|
|
align = calc_alignment(size);
|
|
|
|
|
zfcp_data.fsf_req_qtcb_cache =
|
|
|
|
|
kmem_cache_create("zfcp_fsf", size, align, 0, NULL);
|
|
|
|
|
zfcp_data.fsf_req_qtcb_cache = zfcp_cache_create(
|
|
|
|
|
sizeof(struct zfcp_fsf_req_qtcb), "zfcp_fsf");
|
|
|
|
|
if (!zfcp_data.fsf_req_qtcb_cache)
|
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
|
|
size = sizeof(struct fsf_status_read_buffer);
|
|
|
|
|
align = calc_alignment(size);
|
|
|
|
|
zfcp_data.sr_buffer_cache =
|
|
|
|
|
kmem_cache_create("zfcp_sr", size, align, 0, NULL);
|
|
|
|
|
zfcp_data.sr_buffer_cache = zfcp_cache_create(
|
|
|
|
|
sizeof(struct fsf_status_read_buffer), "zfcp_sr");
|
|
|
|
|
if (!zfcp_data.sr_buffer_cache)
|
|
|
|
|
goto out_sr_cache;
|
|
|
|
|
|
|
|
|
|
size = sizeof(struct zfcp_gid_pn_data);
|
|
|
|
|
align = calc_alignment(size);
|
|
|
|
|
zfcp_data.gid_pn_cache =
|
|
|
|
|
kmem_cache_create("zfcp_gid", size, align, 0, NULL);
|
|
|
|
|
zfcp_data.gid_pn_cache = zfcp_cache_create(
|
|
|
|
|
sizeof(struct zfcp_gid_pn_data), "zfcp_gid");
|
|
|
|
|
if (!zfcp_data.gid_pn_cache)
|
|
|
|
|
goto out_gid_cache;
|
|
|
|
|
|
|
|
|
|
/* initialize adapter list */
|
|
|
|
|
INIT_LIST_HEAD(&zfcp_data.adapter_list_head);
|
|
|
|
|
|
|
|
|
|
/* initialize adapters to be removed list head */
|
|
|
|
|
INIT_LIST_HEAD(&zfcp_data.adapter_remove_lh);
|
|
|
|
|
|
|
|
|
|
sema_init(&zfcp_data.config_sema, 1);
|
|
|
|
|
rwlock_init(&zfcp_data.config_lock);
|
|
|
|
|
|
|
|
|
|
zfcp_data.scsi_transport_template =
|
|
|
|
|
fc_attach_transport(&zfcp_transport_functions);
|
|
|
|
|
if (!zfcp_data.scsi_transport_template)
|
|
|
|
|
goto out_transport;
|
|
|
|
|
|
|
|
|
|
retval = misc_register(&zfcp_cfdc_misc);
|
|
|
|
|
if (retval != 0) {
|
|
|
|
|
if (retval) {
|
|
|
|
|
pr_err("zfcp: registration of misc device zfcp_cfdc failed\n");
|
|
|
|
|
goto out_misc;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Initialise proc semaphores */
|
|
|
|
|
sema_init(&zfcp_data.config_sema, 1);
|
|
|
|
|
|
|
|
|
|
/* initialise configuration rw lock */
|
|
|
|
|
rwlock_init(&zfcp_data.config_lock);
|
|
|
|
|
|
|
|
|
|
/* setup dynamic I/O */
|
|
|
|
|
retval = zfcp_ccw_register();
|
|
|
|
|
if (retval) {
|
|
|
|
|
pr_err("zfcp: Registration with common I/O layer failed.\n");
|
|
|
|
@ -265,157 +208,83 @@ zfcp_module_init(void)
|
|
|
|
|
|
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
|
|
out_ccw_register:
|
|
|
|
|
out_ccw_register:
|
|
|
|
|
misc_deregister(&zfcp_cfdc_misc);
|
|
|
|
|
out_misc:
|
|
|
|
|
out_misc:
|
|
|
|
|
fc_release_transport(zfcp_data.scsi_transport_template);
|
|
|
|
|
out_transport:
|
|
|
|
|
out_transport:
|
|
|
|
|
kmem_cache_destroy(zfcp_data.gid_pn_cache);
|
|
|
|
|
out_gid_cache:
|
|
|
|
|
out_gid_cache:
|
|
|
|
|
kmem_cache_destroy(zfcp_data.sr_buffer_cache);
|
|
|
|
|
out_sr_cache:
|
|
|
|
|
out_sr_cache:
|
|
|
|
|
kmem_cache_destroy(zfcp_data.fsf_req_qtcb_cache);
|
|
|
|
|
out:
|
|
|
|
|
out:
|
|
|
|
|
return retval;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/****************************************************************/
|
|
|
|
|
/****** Functions for configuration/set-up of structures ********/
|
|
|
|
|
/****************************************************************/
|
|
|
|
|
module_init(zfcp_module_init);
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* zfcp_get_unit_by_lun - find unit in unit list of port by FCP LUN
|
|
|
|
|
* @port: pointer to port to search for unit
|
|
|
|
|
* @fcp_lun: FCP LUN to search for
|
|
|
|
|
* Traverse list of all units of a port and return pointer to a unit
|
|
|
|
|
* with the given FCP LUN.
|
|
|
|
|
*
|
|
|
|
|
* Returns: pointer to zfcp_unit or NULL
|
|
|
|
|
*/
|
|
|
|
|
struct zfcp_unit *
|
|
|
|
|
zfcp_get_unit_by_lun(struct zfcp_port *port, fcp_lun_t fcp_lun)
|
|
|
|
|
struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *port,
|
|
|
|
|
fcp_lun_t fcp_lun)
|
|
|
|
|
{
|
|
|
|
|
struct zfcp_unit *unit;
|
|
|
|
|
int found = 0;
|
|
|
|
|
|
|
|
|
|
list_for_each_entry(unit, &port->unit_list_head, list) {
|
|
|
|
|
list_for_each_entry(unit, &port->unit_list_head, list)
|
|
|
|
|
if ((unit->fcp_lun == fcp_lun) &&
|
|
|
|
|
!atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status))
|
|
|
|
|
{
|
|
|
|
|
found = 1;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
return found ? unit : NULL;
|
|
|
|
|
!(atomic_read(&unit->status) & ZFCP_STATUS_COMMON_REMOVE))
|
|
|
|
|
return unit;
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* zfcp_get_port_by_wwpn - find port in port list of adapter by wwpn
|
|
|
|
|
* @adapter: pointer to adapter to search for port
|
|
|
|
|
* @wwpn: wwpn to search for
|
|
|
|
|
* Traverse list of all ports of an adapter and return pointer to a port
|
|
|
|
|
* with the given wwpn.
|
|
|
|
|
*
|
|
|
|
|
* Returns: pointer to zfcp_port or NULL
|
|
|
|
|
*/
|
|
|
|
|
struct zfcp_port *
|
|
|
|
|
zfcp_get_port_by_wwpn(struct zfcp_adapter *adapter, wwn_t wwpn)
|
|
|
|
|
struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *adapter,
|
|
|
|
|
wwn_t wwpn)
|
|
|
|
|
{
|
|
|
|
|
struct zfcp_port *port;
|
|
|
|
|
int found = 0;
|
|
|
|
|
|
|
|
|
|
list_for_each_entry(port, &adapter->port_list_head, list) {
|
|
|
|
|
if ((port->wwpn == wwpn) &&
|
|
|
|
|
!(atomic_read(&port->status) &
|
|
|
|
|
(ZFCP_STATUS_PORT_NO_WWPN | ZFCP_STATUS_COMMON_REMOVE))) {
|
|
|
|
|
found = 1;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
return found ? port : NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* zfcp_get_port_by_did - find port in port list of adapter by d_id
|
|
|
|
|
* @adapter: pointer to adapter to search for port
|
|
|
|
|
* @d_id: d_id to search for
|
|
|
|
|
* Traverse list of all ports of an adapter and return pointer to a port
|
|
|
|
|
* with the given d_id.
|
|
|
|
|
*/
|
|
|
|
|
struct zfcp_port *
|
|
|
|
|
zfcp_get_port_by_did(struct zfcp_adapter *adapter, u32 d_id)
|
|
|
|
|
{
|
|
|
|
|
struct zfcp_port *port;
|
|
|
|
|
int found = 0;
|
|
|
|
|
|
|
|
|
|
list_for_each_entry(port, &adapter->port_list_head, list) {
|
|
|
|
|
if ((port->d_id == d_id) &&
|
|
|
|
|
!atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status))
|
|
|
|
|
{
|
|
|
|
|
found = 1;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
return found ? port : NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* zfcp_get_adapter_by_busid - find adpater in adapter list by bus_id
|
|
|
|
|
* @bus_id: bus_id to search for
|
|
|
|
|
* Traverse list of all adapters and return pointer to an adapter
|
|
|
|
|
* with the given bus_id.
|
|
|
|
|
*/
|
|
|
|
|
struct zfcp_adapter *
|
|
|
|
|
zfcp_get_adapter_by_busid(char *bus_id)
|
|
|
|
|
{
|
|
|
|
|
struct zfcp_adapter *adapter;
|
|
|
|
|
int found = 0;
|
|
|
|
|
|
|
|
|
|
list_for_each_entry(adapter, &zfcp_data.adapter_list_head, list) {
|
|
|
|
|
if ((strncmp(bus_id, zfcp_get_busid_by_adapter(adapter),
|
|
|
|
|
BUS_ID_SIZE) == 0) &&
|
|
|
|
|
!atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE,
|
|
|
|
|
&adapter->status)){
|
|
|
|
|
found = 1;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
return found ? adapter : NULL;
|
|
|
|
|
list_for_each_entry(port, &adapter->port_list_head, list)
|
|
|
|
|
if ((port->wwpn == wwpn) && !(atomic_read(&port->status) &
|
|
|
|
|
(ZFCP_STATUS_PORT_NO_WWPN | ZFCP_STATUS_COMMON_REMOVE)))
|
|
|
|
|
return port;
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 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
|
|
|
|
|
* Return: pointer to enqueued unit on success, NULL on error
|
|
|
|
|
* 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, fcp_lun_t fcp_lun)
|
|
|
|
|
struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, fcp_lun_t fcp_lun)
|
|
|
|
|
{
|
|
|
|
|
struct zfcp_unit *unit;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* check that there is no unit with this FCP_LUN already in list
|
|
|
|
|
* and enqueue it.
|
|
|
|
|
* Note: Unlike for the adapter and the port, this is an error
|
|
|
|
|
*/
|
|
|
|
|
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)
|
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
|
|
unit = kzalloc(sizeof (struct zfcp_unit), GFP_KERNEL);
|
|
|
|
|
unit = kzalloc(sizeof(struct zfcp_unit), GFP_KERNEL);
|
|
|
|
|
if (!unit)
|
|
|
|
|
return NULL;
|
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
|
|
|
|
|
|
/* initialise reference count stuff */
|
|
|
|
|
atomic_set(&unit->refcount, 0);
|
|
|
|
|
init_waitqueue_head(&unit->remove_wq);
|
|
|
|
|
|
|
|
|
|
unit->port = port;
|
|
|
|
|
unit->fcp_lun = fcp_lun;
|
|
|
|
|
|
|
|
|
|
/* setup for sysfs registration */
|
|
|
|
|
snprintf(unit->sysfs_device.bus_id, BUS_ID_SIZE, "0x%016llx", fcp_lun);
|
|
|
|
|
unit->sysfs_device.parent = &port->sysfs_device;
|
|
|
|
|
unit->sysfs_device.release = zfcp_sysfs_unit_release;
|
|
|
|
@ -432,14 +301,19 @@ zfcp_unit_enqueue(struct zfcp_port *port, fcp_lun_t fcp_lun)
|
|
|
|
|
unit->latencies.cmd.channel.min = 0xFFFFFFFF;
|
|
|
|
|
unit->latencies.cmd.fabric.min = 0xFFFFFFFF;
|
|
|
|
|
|
|
|
|
|
if (device_register(&unit->sysfs_device)) {
|
|
|
|
|
kfree(unit);
|
|
|
|
|
return NULL;
|
|
|
|
|
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 (zfcp_sysfs_unit_create_files(&unit->sysfs_device)) {
|
|
|
|
|
device_unregister(&unit->sysfs_device);
|
|
|
|
|
return NULL;
|
|
|
|
|
return ERR_PTR(-EIO);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
zfcp_unit_get(unit);
|
|
|
|
@ -449,16 +323,27 @@ zfcp_unit_enqueue(struct zfcp_port *port, fcp_lun_t fcp_lun)
|
|
|
|
|
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);
|
|
|
|
|
|
|
|
|
|
port->units++;
|
|
|
|
|
zfcp_port_get(port);
|
|
|
|
|
|
|
|
|
|
return unit;
|
|
|
|
|
|
|
|
|
|
err_out_free:
|
|
|
|
|
kfree(unit);
|
|
|
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
zfcp_unit_dequeue(struct zfcp_unit *unit)
|
|
|
|
|
/**
|
|
|
|
|
* zfcp_unit_dequeue - dequeue unit
|
|
|
|
|
* @unit: pointer to zfcp_unit
|
|
|
|
|
*
|
|
|
|
|
* waits until all work is done on unit and removes it then from the unit->list
|
|
|
|
|
* of the associated port.
|
|
|
|
|
*/
|
|
|
|
|
void zfcp_unit_dequeue(struct zfcp_unit *unit)
|
|
|
|
|
{
|
|
|
|
|
zfcp_unit_wait(unit);
|
|
|
|
|
write_lock_irq(&zfcp_data.config_lock);
|
|
|
|
@ -470,64 +355,47 @@ zfcp_unit_dequeue(struct zfcp_unit *unit)
|
|
|
|
|
device_unregister(&unit->sysfs_device);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Allocates a combined QTCB/fsf_req buffer for erp actions and fcp/SCSI
|
|
|
|
|
* commands.
|
|
|
|
|
* It also genrates fcp-nameserver request/response buffer and unsolicited
|
|
|
|
|
* status read fsf_req buffers.
|
|
|
|
|
*
|
|
|
|
|
* locks: must only be called with zfcp_data.config_sema taken
|
|
|
|
|
*/
|
|
|
|
|
static int
|
|
|
|
|
zfcp_allocate_low_mem_buffers(struct zfcp_adapter *adapter)
|
|
|
|
|
static int zfcp_allocate_low_mem_buffers(struct zfcp_adapter *adapter)
|
|
|
|
|
{
|
|
|
|
|
/* must only be called with zfcp_data.config_sema taken */
|
|
|
|
|
adapter->pool.fsf_req_erp =
|
|
|
|
|
mempool_create_slab_pool(ZFCP_POOL_FSF_REQ_ERP_NR,
|
|
|
|
|
zfcp_data.fsf_req_qtcb_cache);
|
|
|
|
|
mempool_create_slab_pool(1, zfcp_data.fsf_req_qtcb_cache);
|
|
|
|
|
if (!adapter->pool.fsf_req_erp)
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
|
|
adapter->pool.fsf_req_scsi =
|
|
|
|
|
mempool_create_slab_pool(ZFCP_POOL_FSF_REQ_SCSI_NR,
|
|
|
|
|
zfcp_data.fsf_req_qtcb_cache);
|
|
|
|
|
mempool_create_slab_pool(1, zfcp_data.fsf_req_qtcb_cache);
|
|
|
|
|
if (!adapter->pool.fsf_req_scsi)
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
|
|
adapter->pool.fsf_req_abort =
|
|
|
|
|
mempool_create_slab_pool(ZFCP_POOL_FSF_REQ_ABORT_NR,
|
|
|
|
|
zfcp_data.fsf_req_qtcb_cache);
|
|
|
|
|
mempool_create_slab_pool(1, zfcp_data.fsf_req_qtcb_cache);
|
|
|
|
|
if (!adapter->pool.fsf_req_abort)
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
|
|
adapter->pool.fsf_req_status_read =
|
|
|
|
|
mempool_create_kmalloc_pool(ZFCP_POOL_STATUS_READ_NR,
|
|
|
|
|
mempool_create_kmalloc_pool(FSF_STATUS_READS_RECOM,
|
|
|
|
|
sizeof(struct zfcp_fsf_req));
|
|
|
|
|
if (!adapter->pool.fsf_req_status_read)
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
|
|
adapter->pool.data_status_read =
|
|
|
|
|
mempool_create_slab_pool(ZFCP_POOL_STATUS_READ_NR,
|
|
|
|
|
mempool_create_slab_pool(FSF_STATUS_READS_RECOM,
|
|
|
|
|
zfcp_data.sr_buffer_cache);
|
|
|
|
|
if (!adapter->pool.data_status_read)
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
|
|
adapter->pool.data_gid_pn =
|
|
|
|
|
mempool_create_slab_pool(ZFCP_POOL_DATA_GID_PN_NR,
|
|
|
|
|
zfcp_data.gid_pn_cache);
|
|
|
|
|
mempool_create_slab_pool(1, zfcp_data.gid_pn_cache);
|
|
|
|
|
if (!adapter->pool.data_gid_pn)
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* zfcp_free_low_mem_buffers - free memory pools of an adapter
|
|
|
|
|
* @adapter: pointer to zfcp_adapter for which memory pools should be freed
|
|
|
|
|
* locking: zfcp_data.config_sema must be held
|
|
|
|
|
*/
|
|
|
|
|
static void
|
|
|
|
|
zfcp_free_low_mem_buffers(struct zfcp_adapter *adapter)
|
|
|
|
|
static void zfcp_free_low_mem_buffers(struct zfcp_adapter *adapter)
|
|
|
|
|
{
|
|
|
|
|
/* zfcp_data.config_sema must be held */
|
|
|
|
|
if (adapter->pool.fsf_req_erp)
|
|
|
|
|
mempool_destroy(adapter->pool.fsf_req_erp);
|
|
|
|
|
if (adapter->pool.fsf_req_scsi)
|
|
|
|
@ -547,6 +415,15 @@ static void zfcp_dummy_release(struct device *dev)
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* zfcp_status_read_refill - refill the long running status_read_requests
|
|
|
|
|
* @adapter: ptr to struct zfcp_adapter for which the buffers should be refilled
|
|
|
|
|
*
|
|
|
|
|
* Returns: 0 on success, 1 otherwise
|
|
|
|
|
*
|
|
|
|
|
* if there are 16 or more status_read requests missing an adapter_reopen
|
|
|
|
|
* is triggered
|
|
|
|
|
*/
|
|
|
|
|
int zfcp_status_read_refill(struct zfcp_adapter *adapter)
|
|
|
|
|
{
|
|
|
|
|
while (atomic_read(&adapter->stat_miss) > 0)
|
|
|
|
@ -573,27 +450,25 @@ static int zfcp_nameserver_enqueue(struct zfcp_adapter *adapter)
|
|
|
|
|
|
|
|
|
|
port = zfcp_port_enqueue(adapter, 0, ZFCP_STATUS_PORT_WKA,
|
|
|
|
|
ZFCP_DID_DIRECTORY_SERVICE);
|
|
|
|
|
if (!port)
|
|
|
|
|
return -ENXIO;
|
|
|
|
|
if (IS_ERR(port))
|
|
|
|
|
return PTR_ERR(port);
|
|
|
|
|
zfcp_port_put(port);
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
/**
|
|
|
|
|
* zfcp_adapter_enqueue - enqueue a new adapter to the list
|
|
|
|
|
* @ccw_device: pointer to the struct cc_device
|
|
|
|
|
*
|
|
|
|
|
* Returns: 0 if a new adapter was successfully enqueued
|
|
|
|
|
* -ENOMEM if alloc failed
|
|
|
|
|
* Enqueues an adapter at the end of the adapter list in the driver data.
|
|
|
|
|
* All adapter internal structures are set up.
|
|
|
|
|
* Proc-fs entries are also created.
|
|
|
|
|
*
|
|
|
|
|
* FIXME: Use -ENOMEM as return code for allocation failures
|
|
|
|
|
*
|
|
|
|
|
* returns: 0 if a new adapter was successfully enqueued
|
|
|
|
|
* ZFCP_KNOWN if an adapter with this devno was already present
|
|
|
|
|
* -ENOMEM if alloc failed
|
|
|
|
|
* locks: config_sema must be held to serialise changes to the adapter list
|
|
|
|
|
*/
|
|
|
|
|
struct zfcp_adapter *
|
|
|
|
|
zfcp_adapter_enqueue(struct ccw_device *ccw_device)
|
|
|
|
|
int zfcp_adapter_enqueue(struct ccw_device *ccw_device)
|
|
|
|
|
{
|
|
|
|
|
struct zfcp_adapter *adapter;
|
|
|
|
|
|
|
|
|
@ -602,15 +477,13 @@ zfcp_adapter_enqueue(struct ccw_device *ccw_device)
|
|
|
|
|
* are protected by the config_sema, which must be held to get here
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/* try to allocate new adapter data structure (zeroed) */
|
|
|
|
|
adapter = kzalloc(sizeof (struct zfcp_adapter), GFP_KERNEL);
|
|
|
|
|
adapter = kzalloc(sizeof(struct zfcp_adapter), GFP_KERNEL);
|
|
|
|
|
if (!adapter)
|
|
|
|
|
goto out;
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
|
|
ccw_device->handler = NULL;
|
|
|
|
|
|
|
|
|
|
/* save ccw_device pointer */
|
|
|
|
|
adapter->ccw_device = ccw_device;
|
|
|
|
|
atomic_set(&adapter->refcount, 0);
|
|
|
|
|
|
|
|
|
|
if (zfcp_qdio_allocate(adapter))
|
|
|
|
|
goto qdio_allocate_failed;
|
|
|
|
@ -618,47 +491,34 @@ zfcp_adapter_enqueue(struct ccw_device *ccw_device)
|
|
|
|
|
if (zfcp_allocate_low_mem_buffers(adapter))
|
|
|
|
|
goto failed_low_mem_buffers;
|
|
|
|
|
|
|
|
|
|
/* initialise reference count stuff */
|
|
|
|
|
atomic_set(&adapter->refcount, 0);
|
|
|
|
|
init_waitqueue_head(&adapter->remove_wq);
|
|
|
|
|
|
|
|
|
|
/* initialise list of ports */
|
|
|
|
|
INIT_LIST_HEAD(&adapter->port_list_head);
|
|
|
|
|
|
|
|
|
|
/* initialise list of ports to be removed */
|
|
|
|
|
INIT_LIST_HEAD(&adapter->port_remove_lh);
|
|
|
|
|
|
|
|
|
|
/* initialize list of fsf requests */
|
|
|
|
|
spin_lock_init(&adapter->req_list_lock);
|
|
|
|
|
if (zfcp_reqlist_alloc(adapter))
|
|
|
|
|
goto failed_low_mem_buffers;
|
|
|
|
|
|
|
|
|
|
/* initialize debug locks */
|
|
|
|
|
if (zfcp_adapter_debug_register(adapter))
|
|
|
|
|
goto debug_register_failed;
|
|
|
|
|
|
|
|
|
|
init_waitqueue_head(&adapter->remove_wq);
|
|
|
|
|
init_waitqueue_head(&adapter->erp_thread_wqh);
|
|
|
|
|
init_waitqueue_head(&adapter->erp_done_wqh);
|
|
|
|
|
|
|
|
|
|
INIT_LIST_HEAD(&adapter->port_list_head);
|
|
|
|
|
INIT_LIST_HEAD(&adapter->port_remove_lh);
|
|
|
|
|
INIT_LIST_HEAD(&adapter->erp_ready_head);
|
|
|
|
|
INIT_LIST_HEAD(&adapter->erp_running_head);
|
|
|
|
|
|
|
|
|
|
spin_lock_init(&adapter->req_list_lock);
|
|
|
|
|
|
|
|
|
|
spin_lock_init(&adapter->hba_dbf_lock);
|
|
|
|
|
spin_lock_init(&adapter->san_dbf_lock);
|
|
|
|
|
spin_lock_init(&adapter->scsi_dbf_lock);
|
|
|
|
|
spin_lock_init(&adapter->rec_dbf_lock);
|
|
|
|
|
|
|
|
|
|
if (zfcp_adapter_debug_register(adapter))
|
|
|
|
|
goto debug_register_failed;
|
|
|
|
|
|
|
|
|
|
/* initialize error recovery stuff */
|
|
|
|
|
|
|
|
|
|
rwlock_init(&adapter->erp_lock);
|
|
|
|
|
sema_init(&adapter->erp_ready_sem, 0);
|
|
|
|
|
INIT_LIST_HEAD(&adapter->erp_ready_head);
|
|
|
|
|
INIT_LIST_HEAD(&adapter->erp_running_head);
|
|
|
|
|
|
|
|
|
|
/* initialize abort lock */
|
|
|
|
|
rwlock_init(&adapter->abort_lock);
|
|
|
|
|
|
|
|
|
|
/* initialise some erp stuff */
|
|
|
|
|
init_waitqueue_head(&adapter->erp_thread_wqh);
|
|
|
|
|
init_waitqueue_head(&adapter->erp_done_wqh);
|
|
|
|
|
|
|
|
|
|
/* initialize lock of associated request queue */
|
|
|
|
|
rwlock_init(&adapter->req_q.lock);
|
|
|
|
|
|
|
|
|
|
sema_init(&adapter->erp_ready_sem, 0);
|
|
|
|
|
|
|
|
|
|
INIT_WORK(&adapter->stat_work, _zfcp_status_read_scheduler);
|
|
|
|
|
INIT_WORK(&adapter->scan_work, _zfcp_scan_ports_later);
|
|
|
|
|
|
|
|
|
@ -678,7 +538,6 @@ zfcp_adapter_enqueue(struct ccw_device *ccw_device)
|
|
|
|
|
if (device_register(&adapter->generic_services))
|
|
|
|
|
goto generic_services_failed;
|
|
|
|
|
|
|
|
|
|
/* put allocated adapter at list tail */
|
|
|
|
|
write_lock_irq(&zfcp_data.config_lock);
|
|
|
|
|
atomic_clear_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status);
|
|
|
|
|
list_add_tail(&adapter->list, &zfcp_data.adapter_list_head);
|
|
|
|
@ -688,33 +547,29 @@ zfcp_adapter_enqueue(struct ccw_device *ccw_device)
|
|
|
|
|
|
|
|
|
|
zfcp_nameserver_enqueue(adapter);
|
|
|
|
|
|
|
|
|
|
goto out;
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
generic_services_failed:
|
|
|
|
|
generic_services_failed:
|
|
|
|
|
zfcp_sysfs_adapter_remove_files(&adapter->ccw_device->dev);
|
|
|
|
|
sysfs_failed:
|
|
|
|
|
sysfs_failed:
|
|
|
|
|
zfcp_adapter_debug_unregister(adapter);
|
|
|
|
|
debug_register_failed:
|
|
|
|
|
debug_register_failed:
|
|
|
|
|
dev_set_drvdata(&ccw_device->dev, NULL);
|
|
|
|
|
zfcp_reqlist_free(adapter);
|
|
|
|
|
failed_low_mem_buffers:
|
|
|
|
|
kfree(adapter->req_list);
|
|
|
|
|
failed_low_mem_buffers:
|
|
|
|
|
zfcp_free_low_mem_buffers(adapter);
|
|
|
|
|
qdio_allocate_failed:
|
|
|
|
|
qdio_allocate_failed:
|
|
|
|
|
zfcp_qdio_free(adapter);
|
|
|
|
|
kfree(adapter);
|
|
|
|
|
adapter = NULL;
|
|
|
|
|
out:
|
|
|
|
|
return adapter;
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* returns: 0 - struct zfcp_adapter data structure successfully removed
|
|
|
|
|
* !0 - struct zfcp_adapter data structure could not be removed
|
|
|
|
|
* (e.g. still used)
|
|
|
|
|
/**
|
|
|
|
|
* zfcp_adapter_dequeue - remove the adapter from the resource list
|
|
|
|
|
* @adapter: pointer to struct zfcp_adapter which should be removed
|
|
|
|
|
* locks: adapter list write lock is assumed to be held by caller
|
|
|
|
|
*/
|
|
|
|
|
void
|
|
|
|
|
zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
|
|
|
|
|
void zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
|
|
|
|
|
{
|
|
|
|
|
int retval = 0;
|
|
|
|
|
unsigned long flags;
|
|
|
|
@ -729,10 +584,8 @@ zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
|
|
|
|
|
spin_lock_irqsave(&adapter->req_list_lock, flags);
|
|
|
|
|
retval = zfcp_reqlist_isempty(adapter);
|
|
|
|
|
spin_unlock_irqrestore(&adapter->req_list_lock, flags);
|
|
|
|
|
if (!retval) {
|
|
|
|
|
retval = -EBUSY;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
if (!retval)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
zfcp_adapter_debug_unregister(adapter);
|
|
|
|
|
|
|
|
|
@ -747,12 +600,10 @@ zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
|
|
|
|
|
zfcp_qdio_free(adapter);
|
|
|
|
|
|
|
|
|
|
zfcp_free_low_mem_buffers(adapter);
|
|
|
|
|
zfcp_reqlist_free(adapter);
|
|
|
|
|
kfree(adapter->req_list);
|
|
|
|
|
kfree(adapter->fc_stats);
|
|
|
|
|
kfree(adapter->stats_reset_data);
|
|
|
|
|
kfree(adapter);
|
|
|
|
|
out:
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
@ -761,77 +612,58 @@ zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
|
|
|
|
|
* @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
|
|
|
|
|
* Return: pointer to enqueued port on success, NULL on error
|
|
|
|
|
* 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 *zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn,
|
|
|
|
|
u32 status, u32 d_id)
|
|
|
|
|
{
|
|
|
|
|
struct zfcp_port *port;
|
|
|
|
|
int check_wwpn;
|
|
|
|
|
char *bus_id;
|
|
|
|
|
|
|
|
|
|
check_wwpn = !(status & ZFCP_STATUS_PORT_NO_WWPN);
|
|
|
|
|
/*
|
|
|
|
|
* check that there is no port with this WWPN already in list
|
|
|
|
|
*/
|
|
|
|
|
if (check_wwpn) {
|
|
|
|
|
read_lock_irq(&zfcp_data.config_lock);
|
|
|
|
|
port = zfcp_get_port_by_wwpn(adapter, wwpn);
|
|
|
|
|
read_unlock_irq(&zfcp_data.config_lock);
|
|
|
|
|
if (port)
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
port = kzalloc(sizeof (struct zfcp_port), GFP_KERNEL);
|
|
|
|
|
port = kzalloc(sizeof(struct zfcp_port), GFP_KERNEL);
|
|
|
|
|
if (!port)
|
|
|
|
|
return NULL;
|
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
|
|
|
|
|
|
/* initialise reference count stuff */
|
|
|
|
|
atomic_set(&port->refcount, 0);
|
|
|
|
|
init_waitqueue_head(&port->remove_wq);
|
|
|
|
|
|
|
|
|
|
INIT_LIST_HEAD(&port->unit_list_head);
|
|
|
|
|
INIT_LIST_HEAD(&port->unit_remove_lh);
|
|
|
|
|
|
|
|
|
|
port->adapter = adapter;
|
|
|
|
|
|
|
|
|
|
if (check_wwpn)
|
|
|
|
|
port->d_id = d_id;
|
|
|
|
|
port->wwpn = wwpn;
|
|
|
|
|
|
|
|
|
|
atomic_set_mask(status, &port->status);
|
|
|
|
|
/* 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);
|
|
|
|
|
|
|
|
|
|
/* setup for sysfs registration */
|
|
|
|
|
if (status & ZFCP_STATUS_PORT_WKA) {
|
|
|
|
|
switch (d_id) {
|
|
|
|
|
case ZFCP_DID_DIRECTORY_SERVICE:
|
|
|
|
|
snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE,
|
|
|
|
|
"directory");
|
|
|
|
|
bus_id = "directory";
|
|
|
|
|
break;
|
|
|
|
|
case ZFCP_DID_MANAGEMENT_SERVICE:
|
|
|
|
|
snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE,
|
|
|
|
|
"management");
|
|
|
|
|
bus_id = "management";
|
|
|
|
|
break;
|
|
|
|
|
case ZFCP_DID_KEY_DISTRIBUTION_SERVICE:
|
|
|
|
|
snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE,
|
|
|
|
|
"key_distribution");
|
|
|
|
|
bus_id = "key_distribution";
|
|
|
|
|
break;
|
|
|
|
|
case ZFCP_DID_ALIAS_SERVICE:
|
|
|
|
|
snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE,
|
|
|
|
|
"alias");
|
|
|
|
|
bus_id = "alias";
|
|
|
|
|
break;
|
|
|
|
|
case ZFCP_DID_TIME_SERVICE:
|
|
|
|
|
snprintf(port->sysfs_device.bus_id, BUS_ID_SIZE,
|
|
|
|
|
"time");
|
|
|
|
|
bus_id = "time";
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
kfree(port);
|
|
|
|
|
return NULL;
|
|
|
|
|
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,
|
|
|
|
@ -839,22 +671,23 @@ zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn, u32 status,
|
|
|
|
|
port->sysfs_device.parent = &adapter->ccw_device->dev;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
port->d_id = d_id;
|
|
|
|
|
|
|
|
|
|
port->sysfs_device.release = zfcp_sysfs_port_release;
|
|
|
|
|
dev_set_drvdata(&port->sysfs_device, port);
|
|
|
|
|
|
|
|
|
|
/* mark port unusable as long as sysfs registration is not complete */
|
|
|
|
|
atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status);
|
|
|
|
|
|
|
|
|
|
if (device_register(&port->sysfs_device)) {
|
|
|
|
|
kfree(port);
|
|
|
|
|
return NULL;
|
|
|
|
|
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 (zfcp_sysfs_port_create_files(&port->sysfs_device, status)) {
|
|
|
|
|
device_unregister(&port->sysfs_device);
|
|
|
|
|
return NULL;
|
|
|
|
|
goto err_out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
zfcp_port_get(port);
|
|
|
|
@ -867,15 +700,23 @@ zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn, u32 status,
|
|
|
|
|
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);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
zfcp_port_dequeue(struct zfcp_port *port)
|
|
|
|
|
/**
|
|
|
|
|
* zfcp_port_dequeue - dequeues a port from the port list of the adapter
|
|
|
|
|
* @port: pointer to struct zfcp_port which should be removed
|
|
|
|
|
*/
|
|
|
|
|
void zfcp_port_dequeue(struct zfcp_port *port)
|
|
|
|
|
{
|
|
|
|
|
zfcp_port_wait(port);
|
|
|
|
|
write_lock_irq(&zfcp_data.config_lock);
|
|
|
|
@ -891,6 +732,12 @@ zfcp_port_dequeue(struct zfcp_port *port)
|
|
|
|
|
device_unregister(&port->sysfs_device);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* zfcp_sg_free_table - free memory used by scatterlists
|
|
|
|
|
* @sg: pointer to scatterlist
|
|
|
|
|
* @count: number of scatterlist which are to be free'ed
|
|
|
|
|
* the scatterlist are expected to reference pages always
|
|
|
|
|
*/
|
|
|
|
|
void zfcp_sg_free_table(struct scatterlist *sg, int count)
|
|
|
|
|
{
|
|
|
|
|
int i;
|
|
|
|
@ -902,6 +749,14 @@ void zfcp_sg_free_table(struct scatterlist *sg, int count)
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* zfcp_sg_setup_table - init scatterlist and allocate, assign buffers
|
|
|
|
|
* @sg: pointer to struct scatterlist
|
|
|
|
|
* @count: number of scatterlists which should be assigned with buffers
|
|
|
|
|
* of size page
|
|
|
|
|
*
|
|
|
|
|
* Returns: 0 on success, -ENOMEM otherwise
|
|
|
|
|
*/
|
|
|
|
|
int zfcp_sg_setup_table(struct scatterlist *sg, int count)
|
|
|
|
|
{
|
|
|
|
|
void *addr;
|
|
|
|
|