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Location: vmkdrivers/vmkdrivers/src_9/drivers/scsi/bnx2i/bnx2i_init.c - annotation
bd21c8aa7237
24.8 KiB
text/x-csrc
ESXi-6.0.0b
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763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e 763922b5834e | /*
* QLogic NetXtreme II iSCSI offload driver.
* Copyright (c) 2003-2014 QLogic Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation.
*
* Written by: Anil Veerabhadrappa (anilgv@broadcom.com)
*/
#include "bnx2i.h"
#ifdef __VMKLNX__
#if (VMWARE_ESX_DDK_VERSION == 41000)
#include <vmklinux26/vmklinux26_scsi.h>
#else
#include <vmklinux_9/vmklinux_scsi.h>
#endif
#include <scsi/scsi_transport.h>
#endif
static struct list_head adapter_list;
static u32 adapter_count;
#define DRV_MODULE_NAME "bnx2i"
#define DRV_MODULE_VERSION "2.78.76.v60.8"
#define DRV_MODULE_RELDATE "May 21, 2014"
static char version[] __devinitdata =
"QLogic NetXtreme II iSCSI Driver " DRV_MODULE_NAME \
" v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
MODULE_AUTHOR("QLogic Corporation");
MODULE_DESCRIPTION("QLogic NetXtreme II BCM5706/5708/5709/57710/57711/57712/57800/57810"
" iSCSI Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_MODULE_VERSION);
static DEFINE_MUTEX(bnx2i_dev_lock);
unsigned int event_coal_div = 1;
module_param(event_coal_div, int, 0664);
MODULE_PARM_DESC(event_coal_div, "Event Coalescing Divide Factor");
unsigned int bnx2i_nopout_when_cmds_active = 1;
module_param(bnx2i_nopout_when_cmds_active, int, 0664);
MODULE_PARM_DESC(bnx2i_nopout_when_cmds_active,
"iSCSI NOOP even when connection is not idle");
unsigned int en_tcp_dack = 1;
module_param(en_tcp_dack, int, 0664);
MODULE_PARM_DESC(en_tcp_dack, "Enable TCP Delayed ACK");
unsigned int time_stamps = 1;
module_param(time_stamps, int, 0664);
MODULE_PARM_DESC(time_stamps, "Enable TCP TimeStamps");
unsigned int error_mask1 = 0x00;
module_param(error_mask1, uint, 0664);
MODULE_PARM_DESC(error_mask1, "Config FW iSCSI Error Mask #1");
unsigned int error_mask2 = 0x00;
module_param(error_mask2, uint, 0664);
MODULE_PARM_DESC(error_mask2, "Config FW iSCSI Error Mask #2");
unsigned int sq_size = 0;
module_param(sq_size, int, 0664);
MODULE_PARM_DESC(sq_size, "Configure SQ size");
unsigned int rq_size = BNX2I_RQ_WQES_DEFAULT;
module_param(rq_size, int, 0664);
MODULE_PARM_DESC(rq_size, "Configure RQ size");
unsigned int tcp_buf_size = 65536;
module_param(tcp_buf_size, int, 0664);
MODULE_PARM_DESC(tcp_buf_size, "TCP send/receive buffer size");
unsigned int event_coal_min = 24;
module_param(event_coal_min, int, 0664);
MODULE_PARM_DESC(event_coal_min, "Event Coalescing Minimum Commands");
unsigned int cmd_cmpl_per_work = 24;
module_param(cmd_cmpl_per_work, int, 0664);
MODULE_PARM_DESC(cmd_cmpl_per_work, "Number of CQE's processed per work");
unsigned int max_bnx2x_sessions = 128;
module_param(max_bnx2x_sessions, int, 0664);
MODULE_PARM_DESC(max_bnx2x_sessions, "Maximum number of 10G sessions");
unsigned int max_bnx2_sessions = 64;
module_param(max_bnx2_sessions, int, 0664);
MODULE_PARM_DESC(max_bnx2_sessions, "Maximum number of 1G sessions");
#ifdef __VMKLNX__
#if (VMWARE_ESX_DDK_VERSION >= 50000)
unsigned int bnx2i_esx_mtu_max = 9000;
module_param(bnx2i_esx_mtu_max, int, 0664);
MODULE_PARM_DESC(bnx2i_esx_mtu_max, "Max MTU Supported for Offload Sessions");
#endif
unsigned int en_hba_poll = 0;
module_param(en_hba_poll, int, 0664);
MODULE_PARM_DESC(en_hba_poll, "Enable HBA poll timer");
unsigned int bnx2i_chip_cmd_max = 24;
module_param(bnx2i_chip_cmd_max, int, 0664);
MODULE_PARM_DESC(bnx2i_chip_cmd_max, "Max IOs queued to chip");
int bnx2i_max_sectors = -1;
module_param(bnx2i_max_sectors, int, 0664);
MODULE_PARM_DESC(bnx2i_max_sectors, "Maximum sectors supported by the driver\n"
"\tValid range: 64 - 256. -1 will set it to default value.\n"
"\tThe default value are 256 for 10G NIC, 127 for 1G NIC.\n");
unsigned int bnx2i_max_task_pgs = 2;
module_param(bnx2i_max_task_pgs, int, 0664);
MODULE_PARM_DESC(bnx2i_max_task_pgs, "Maximum pages allocated for iSCSi tasks per connection\n"
"\tValid range: 2 - 8");
#endif
unsigned int bnx2i_debug_level = 0;
module_param(bnx2i_debug_level, int, 0664);
MODULE_PARM_DESC(bnx2i_debug_level, "Bit mask to enable/disable debug logs\n"
"\tInitalization:\t0x01\n"
"\tConn Setup:\t0x02\n"
"\tTMF:\t\t0x04\n"
"\tiSCSI NOP:\t0x08\n"
"\tCNIC IF:\t0x10\n"
"\tITT CLEANUP:\t0x20\n"
"\tCONN EVT:\t0x40\n"
"\tSESS Recovery:\t0x80\n");
unsigned int ooo_enable = 1;
module_param(ooo_enable, int, 0664);
MODULE_PARM_DESC(ooo_enable, "Enable TCP out-of-order support");
u64 iscsi_error_mask = 0x00;
extern struct cnic_ulp_ops bnx2i_cnic_cb;
extern spinlock_t bnx2i_resc_lock; /* protects global data structures */
extern struct tcp_port_mngt bnx2i_tcp_port_tbl;
static void bnx2i_unreg_one_device(struct bnx2i_hba *hba) ;
#ifndef __VMKLNX__
static int bnx2i_bind_adapter_devices(struct bnx2i_hba *hba);
static void bnx2i_unbind_adapter_devices(struct bnx2i_hba *hba);
#else
void bnx2i_unbind_adapter_devices(struct bnx2i_hba *hba);
#endif
/* Validate module parameter's range and zero value
*/
static void bnx2i_param_check_range(void)
{
if (!event_coal_div)
event_coal_div = 1;
if (!cmd_cmpl_per_work) {
printk(KERN_INFO "bnx2i: cmd_cmpl_per_work %d out of range,"
" using %d\n", cmd_cmpl_per_work, BNX2I_CQ_WQES_MIN);
cmd_cmpl_per_work = BNX2I_CQ_WQES_MIN;
}
tcp_buf_size = roundup_pow_of_two(tcp_buf_size);
if (tcp_buf_size < BNX2I_TCP_WINDOW_MIN ||
tcp_buf_size > BNX2I_TCP_WINDOW_MAX) {
printk(KERN_INFO "bnx2i: TCP window %d out of range, using %d\n",
tcp_buf_size, BNX2I_TCP_WINDOW_DEFAULT);
tcp_buf_size = BNX2I_TCP_WINDOW_DEFAULT;
}
}
/**
* bnx2i_identify_device - identifies NetXtreme II device type
* @hba: Adapter structure pointer
* @cnic: Corresponding cnic device
*
* This function identifies the NX2 device type and sets appropriate
* queue mailbox register access method, 5709 requires driver to
* access MBOX regs using *bin* mode
*/
void bnx2i_identify_device(struct bnx2i_hba *hba, struct cnic_dev *dev)
{
hba->cnic_dev_type = 0;
if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
if ((hba->pci_did == PCI_DEVICE_ID_NX2_5706) ||
(hba->pci_did == PCI_DEVICE_ID_NX2_5706S))
set_bit(BNX2I_NX2_DEV_5706, &hba->cnic_dev_type);
else if ((hba->pci_did == PCI_DEVICE_ID_NX2_5708) ||
(hba->pci_did == PCI_DEVICE_ID_NX2_5708S))
set_bit(BNX2I_NX2_DEV_5708, &hba->cnic_dev_type);
else if ((hba->pci_did == PCI_DEVICE_ID_NX2_5709) ||
(hba->pci_did == PCI_DEVICE_ID_NX2_5709S)) {
set_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type);
hba->mail_queue_access = BNX2I_MQ_BIN_MODE;
}
} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags))
set_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type);
else
printk(KERN_ALERT "bnx2i: unknown device, 0x%x\n",
hba->pci_did);
}
/**
* get_adapter_list_head - returns head of adapter list
*
**/
struct bnx2i_hba *get_adapter_list_head(void)
{
struct bnx2i_hba *hba = NULL;
struct bnx2i_hba *tmp_hba;
if (!adapter_count)
goto hba_not_found;
mutex_lock(&bnx2i_dev_lock);
list_for_each_entry(tmp_hba, &adapter_list, link) {
if (tmp_hba->cnic && tmp_hba->cnic->cm_select_dev) {
hba = tmp_hba;
break;
}
}
mutex_unlock(&bnx2i_dev_lock);
hba_not_found:
return hba;
}
struct bnx2i_hba *bnx2i_map_pcidev_to_hba(struct pci_dev *pdev)
{
struct bnx2i_hba *hba;
mutex_lock(&bnx2i_dev_lock);
list_for_each_entry(hba, &adapter_list, link) {
if (hba->pcidev == pdev) {
mutex_unlock(&bnx2i_dev_lock);
return hba;
}
}
mutex_unlock(&bnx2i_dev_lock);
return NULL;
}
/**
* bnx2i_get_hba_from_template - maps scsi_transport_template to
* bnx2i adapter pointer
* @scsit: scsi transport template pointer
*
**/
struct bnx2i_hba *bnx2i_get_hba_from_template(
struct scsi_transport_template *scsit)
{
struct bnx2i_hba *tmp_hba;
struct bnx2i_hba *hba = NULL;
mutex_lock(&bnx2i_dev_lock);
list_for_each_entry(tmp_hba, &adapter_list, link) {
if (tmp_hba->shost_template == scsit) {
hba = tmp_hba;
break;
}
}
mutex_unlock(&bnx2i_dev_lock);
return hba;
}
/**
* bnx2i_find_hba_for_cnic - maps cnic device instance to bnx2i adapter instance
*
* @cnic: pointer to cnic device instance
*
**/
struct bnx2i_hba *bnx2i_find_hba_for_cnic(struct cnic_dev *cnic)
{
struct bnx2i_hba *hba;
mutex_lock(&bnx2i_dev_lock);
list_for_each_entry(hba, &adapter_list, link) {
if (hba->cnic == cnic) {
mutex_unlock(&bnx2i_dev_lock);
return hba;
}
}
mutex_unlock(&bnx2i_dev_lock);
return NULL;
}
void bnx2i_add_hba_to_adapter_list(struct bnx2i_hba *hba)
{
mutex_lock(&bnx2i_dev_lock);
list_add_tail(&hba->link, &adapter_list);
adapter_count++;
mutex_unlock(&bnx2i_dev_lock);
}
void bnx2i_remove_hba_from_adapter_list(struct bnx2i_hba *hba)
{
mutex_lock(&bnx2i_dev_lock);
if (!list_empty(&hba->link)) {
/* detach hba from active list */
adapter_count--;
list_del(&hba->link);
}
mutex_unlock(&bnx2i_dev_lock);
}
#ifdef __VMKLNX__
struct bnx2i_hba *bnx2i_map_netdev_to_hba(struct net_device *netdev)
{
struct bnx2i_hba *tmp_hba;
struct bnx2i_hba *hba = NULL;
mutex_lock(&bnx2i_dev_lock);
list_for_each_entry(tmp_hba, &adapter_list, link) {
if (tmp_hba->netdev == netdev) {
hba = tmp_hba;
break;
}
}
mutex_unlock(&bnx2i_dev_lock);
return hba;
}
static void bnx2i_check_iscsi_support(struct bnx2i_hba *hba)
{
if (!hba->shost_template) {
bnx2i_unreg_one_device(hba);
return;
}
/* unless you register the device cnic can't get information
* to determine iscsi is supported or not
*/
bnx2i_register_device(hba, BNX2I_REGISTER_HBA_FORCED);
bnx2i_register_xport(hba);
bnx2i_unreg_one_device(hba);
}
void bnx2i_lookup_iscsi_hba_vm(void)
{
struct bnx2i_hba *hba = NULL;
if (!adapter_count)
return;
list_for_each_entry(hba, &adapter_list, link)
bnx2i_check_iscsi_support(hba);
}
#endif /* __VMKLNX__ */
/**
* bnx2i_start - cnic callback to initialize & start adapter instance
*
* @handle: transparent handle pointing to adapter structure
*
* This function maps adapter structure to pcidev structure and initiates
* firmware handshake to enable/initialize on chip iscsi components
* This bnx2i - cnic interface api callback is issued after following
* 2 conditions are met -
* a) underlying network interface is up (marked by event 'NETDEV_UP'
* from netdev
* b) bnx2i adapter instance is registered
**/
void bnx2i_start(void *handle)
{
#define BNX2I_INIT_POLL_TIME (1000 / HZ)
struct bnx2i_hba *hba = handle;
int i = HZ;
#ifndef __VMKLNX__
bnx2i_bind_adapter_devices(hba);
#endif
bnx2i_send_fw_iscsi_init_msg(hba);
do {
if (test_bit(ADAPTER_STATE_UP, &hba->adapter_state) ||
test_bit(ADAPTER_STATE_INIT_FAILED, &hba->adapter_state))
break;
msleep(BNX2I_INIT_POLL_TIME);
} while (i--);
}
/**
* bnx2i_stop - cnic callback to shutdown adapter instance
*
* @handle: transparent handle pointing to adapter structure
*
* driver checks if adapter is already in shutdown mode, if not start
* the shutdown process
**/
void bnx2i_stop(void *handle)
{
struct bnx2i_hba *hba = handle;
/* bnx2i will have to wait this long because it depends
* many other modules to complete the assigned tasks,
* inflight connections to be established/logged in,
* or clean-up the active connections. It depends of
* outside agents such as vmkiscsid, cnic, firmware to
* to complete this process.
*/
int wait_num_secs = 0;
int timeout, ulp_tmo;
int repeat = 0;
/* cnic will guarantee 'ulp_stop' will be called only once */
set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
/* Initially wait 40-secs and later keep polling every second for
* both previously active and inflight connections to be torn down.
*/
#ifdef __VMKLNX__
if (atomic_read(&hba->ep_tmo_poll_enabled))
wake_up_interruptible(&hba->ep_tmo_wait);
if (vmk_SystemCheckState(VMK_SYSTEM_STATE_NORMAL) == VMK_TRUE) {
#endif
timeout = 40 * HZ;
ulp_tmo = 40;
while (hba->ofld_conns_active) {
bnx2i_start_iscsi_hba_shutdown(hba);
wait_event_interruptible_timeout(hba->eh_wait,
(hba->ofld_conns_active == 0),
timeout);
wait_num_secs += timeout;
if (ulp_tmo == 40) {
printk(KERN_INFO "%s: %s - hba %p, ulp_stop wait time %d seconds (%d)\n",
__FUNCTION__, hba->netdev->name, hba, wait_num_secs/HZ,
hba->ofld_conns_active);
ulp_tmo = 0;
} else
ulp_tmo++;
repeat++;
timeout = HZ;
}
#ifdef __VMKLNX__
} else {
/*
* If network stop event is received when not in normal system
* state we are in shutdown. At this point vmkiscsid is already
* dead so active connection cleanup processing won't complete.
* just skip full processing since we are in the shutdown path.
*/
bnx2i_iscsi_hba_cleanup(hba);
printk(KERN_ERR "%s: %s - hba %p, stop event during shutdown\n",
__FUNCTION__, hba->netdev->name, hba);
}
#endif
printk(KERN_INFO "%s: %s - hba %p, ulp_stop completed in %d seconds\n",
__FUNCTION__, hba->netdev->name, hba, wait_num_secs/HZ);
if (repeat)
hba->stop_event_repeat++;
if (hba->ofld_conns_active)
printk(KERN_ERR "%s: %s - hba %p, there are still some active "
"connections, %d at the end of stop call\n",
__FUNCTION__, hba->netdev->name, hba,
hba->ofld_conns_active);
clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
}
/**
* bnx2i_register_device - register bnx2i adapter instance with the cnic driver
*
* @hba: Adapter instance to register
* @reg_mode: 0 -> register only licensed hba, 1 -> all
*
* registers bnx2i adapter instance with the cnic driver while holding the
* adapter structure lock
**/
void bnx2i_register_device(struct bnx2i_hba *hba, int reg_mode)
{
int rc;
if (test_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic)) {
BNX2I_DBG(DBG_CNIC_IF, hba, "reg device, reg_state %lx\n",
hba->reg_with_cnic);
#ifdef __VMKLNX__
bnx2i_get_link_state(hba);
#endif
return;
}
if (test_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state) ||
((reg_mode == BNX2I_REGISTER_HBA_SUPPORTED) &&
(!hba->cnic->max_iscsi_conn))) {
BNX2I_DBG(DBG_CNIC_IF, hba, "reg device, reg_state %lx\n",
hba->reg_with_cnic);
return;
}
rc = hba->cnic->register_device(hba->cnic, CNIC_ULP_ISCSI, hba);
if (!rc) {
set_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic);
BNX2I_DBG(DBG_CNIC_IF, hba, "device registered\n");
}
}
/**
* bnx2i_reg_dev_all - registers all bnx2i adapter instances with the
* cnic driver
*
* registers all bnx2i adapter instances with the cnic driver while holding
* the global resource lock
**/
void bnx2i_reg_dev_all(void)
{
struct bnx2i_hba *hba;
mutex_lock(&bnx2i_dev_lock);
list_for_each_entry(hba, &adapter_list, link) {
#ifdef __VMKLNX__
bnx2i_register_device(hba, BNX2I_REGISTER_HBA_SUPPORTED);
#else
bnx2i_register_device(hba, BNX2I_REGISTER_HBA_FORCED);
#endif
}
mutex_unlock(&bnx2i_dev_lock);
}
/**
* bnx2i_unreg_one_device - unregister bnx2i adapter instance with
* the cnic driver
*
* @hba: Adapter instance to unregister
*
* registers bnx2i adapter instance with the cnic driver while holding
* the adapter structure lock
**/
static void bnx2i_unreg_one_device(struct bnx2i_hba *hba)
{
if (hba->ofld_conns_active ||
!test_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic)) {
return;
}
hba->cnic->unregister_device(hba->cnic, CNIC_ULP_ISCSI);
/* ep_disconnect could come before NETDEV_DOWN, driver won't
* see NETDEV_DOWN as it already unregistered itself.
*/
hba->adapter_state = 0;
clear_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic);
#ifndef __VMKLNX__
bnx2i_unbind_adapter_devices(hba);
#endif
}
/**
* bnx2i_unreg_dev_all - unregisters all bnx2i adapter instances with the
* cnic driver
*
* unregisters all bnx2i adapter instances with the cnic driver while holding
* the global resource lock
**/
void bnx2i_unreg_dev_all(void)
{
struct bnx2i_hba *hba;
mutex_lock(&bnx2i_dev_lock);
list_for_each_entry(hba, &adapter_list, link)
bnx2i_unreg_one_device(hba);
mutex_unlock(&bnx2i_dev_lock);
}
/**
* bnx2i_bind_adapter_devices - binds bnx2i adapter with the associated
* pcidev structure
*
* @hba: Adapter instance
*
* With newly introduced changes to bnx2i - cnic interface, cnic_dev's 'pcidev'
* field will be valid only after bnx2i registers the device instance.
* Earlier this field was valid right during device enumeration process
**/
#ifndef __VMKLNX__
static
#endif
int bnx2i_bind_adapter_devices(struct bnx2i_hba *hba)
{
struct cnic_dev *cnic;
int nx2_10g_dev = 0;
if (!hba->cnic)
return -ENODEV;
cnic = hba->cnic;
hba->pcidev = cnic->pcidev;
if (hba->pcidev) {
pci_dev_get(hba->pcidev);
hba->pci_did = hba->pcidev->device;
hba->pci_vid = hba->pcidev->vendor;
hba->pci_sdid = hba->pcidev->subsystem_device;
hba->pci_svid = hba->pcidev->subsystem_vendor;
hba->pci_func = PCI_FUNC(hba->pcidev->devfn);
hba->pci_devno = PCI_SLOT(hba->pcidev->devfn);
}
bnx2i_identify_device(hba, cnic);
if (test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) {
hba->regview = pci_iomap(hba->pcidev, 0, BNX2_MQ_CONFIG2);
if (!hba->regview)
goto mem_err;
} else if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) {
nx2_10g_dev = 1;
hba->regview = pci_iomap(hba->pcidev, 0, 4096);
if (!hba->regview)
goto mem_err;
}
if (nx2_10g_dev) {
hba->conn_teardown_tmo = 15 * HZ;
hba->conn_ctx_destroy_tmo = 6 * HZ;
hba->hba_shutdown_tmo = 240 * HZ;
} else {
hba->conn_teardown_tmo = 6 * HZ;
hba->conn_ctx_destroy_tmo = 2 * HZ;
hba->hba_shutdown_tmo = 30 * HZ;
}
if (bnx2i_setup_mp_bdt(hba))
goto mem_err;
return 0;
mem_err:
bnx2i_unbind_adapter_devices(hba);
return -ENOMEM;
}
/**
* bnx2i_unbind_adapter_devices - removes bnx2i adapter to pcidev mapping
*
* @hba: Adapter instance
*
**/
void bnx2i_unbind_adapter_devices(struct bnx2i_hba *hba)
{
if (hba->regview) {
pci_iounmap(hba->pcidev, hba->regview);
hba->regview = NULL;
}
bnx2i_free_mp_bdt(hba);
if (hba->pcidev)
pci_dev_put(hba->pcidev);
hba->pcidev = NULL;
#ifdef __VMKLNX__
if (hba->shost && hba->shost->shost_state == SHOST_RUNNING)
scsi_remove_host(hba->shost);
#endif
}
/**
* bnx2i_init_one - initialize an adapter instance and allocate necessary
* memory resources
*
* @hba: bnx2i adapter instance
* @cnic: cnic device handle
*
* Global resource lock and host adapter lock is held during critical sections
* below. This routine is called from cnic_register_driver() context and
* work horse thread which does majority of device specific initialization
**/
static int bnx2i_init_one(struct bnx2i_hba *hba, struct cnic_dev *cnic)
{
int rc;
mutex_lock(&bnx2i_dev_lock);
hba->netdev = cnic->netdev;
rc = cnic->register_device(cnic, CNIC_ULP_ISCSI, (void *) hba);
if (!rc) {
hba->age++;
set_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic);
} else if (rc == -EBUSY) /* duplicate registration */
PRINT_ALERT(hba, "duplicate registration"
"cnic=%p\n", cnic);
else if (rc == -EAGAIN)
PRINT_ERR(hba, "driver not registered\n");
else if (rc == -EINVAL)
PRINT_ERR(hba, "invalid type %d\n", CNIC_ULP_ISCSI);
else
PRINT_ERR(hba, "reg, unknown error, %d\n", rc);
if (rc)
goto ret_err;
if (cnic->netdev)
memcpy(hba->mac_addr, cnic->netdev->dev_addr, MAX_ADDR_LEN);
/* Allocate memory & initialize the SCSI/iSCSI host templates */
rc = bnx2i_register_xport(hba);
if (rc)
goto failed_xport_reg;
#ifndef __VMKLNX__
/* create 'sysfs' device objects */
rc = bnx2i_register_sysfs(hba);
if (rc)
goto failed_sysfs_reg;
bnx2i_tcp_port_tbl.num_required += hba->max_active_conns;
#endif
if (ooo_enable)
set_bit(CNIC_F_ISCSI_OOO_ENABLE, &cnic->flags);
else
clear_bit(CNIC_F_ISCSI_OOO_ENABLE, &cnic->flags);
mutex_unlock(&bnx2i_dev_lock);
return 0;
#ifndef __VMKLNX__
failed_sysfs_reg:
bnx2i_deregister_xport(hba);
bnx2i_free_iscsi_scsi_template(hba);
#endif
failed_xport_reg:
#ifndef __VMKLNX__
bnx2i_unbind_adapter_devices(hba);
#endif
cnic->unregister_device(cnic, CNIC_ULP_ISCSI);
clear_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic);
ret_err:
mutex_unlock(&bnx2i_dev_lock);
return rc;
}
/**
* bnx2i_ulp_init - initialize an adapter instance
*
* @dev: cnic device handle
*
* Called from cnic_register_driver() context to initialize all enumerated
* cnic devices. This routine allocate adapter structure and other
* device specific resources.
**/
void bnx2i_ulp_init(struct cnic_dev *dev)
{
struct bnx2i_hba *hba;
/* Allocate a HBA structure for this device */
hba = bnx2i_alloc_hba(dev);
if (!hba) {
PRINT_ERR(hba, "bnx2i_alloc_hba failed\n");
return;
}
/* Get PCI related information and update hba struct members */
clear_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic);
if (bnx2i_init_one(hba, dev)) {
PRINT_ERR(hba, "bnx2i_init_one failed\n");
bnx2i_free_hba(hba);
} else
hba->cnic = dev;
}
/**
* bnx2i_ulp_exit - shuts down adapter instance and frees all resources
*
* @dev: cnic device handle
*
**/
void bnx2i_ulp_exit(struct cnic_dev *dev)
{
struct bnx2i_hba *hba;
hba = bnx2i_find_hba_for_cnic(dev);
if (!hba) {
BNX2I_DBG(DBG_INIT, NULL, "bnx2i_ulp_exit: hba not "
"found, dev 0x%p\n", dev);
return;
}
mutex_lock(&bnx2i_dev_lock);
bnx2i_tcp_port_tbl.num_required -= hba->max_active_conns;
/* cleanup 'sysfs' devices and classes */
bnx2i_unregister_sysfs(hba);
if (test_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic)) {
hba->cnic->unregister_device(hba->cnic, CNIC_ULP_ISCSI);
clear_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic);
#ifndef __VMKLNX__
bnx2i_unbind_adapter_devices(hba);
#endif
}
mutex_unlock(&bnx2i_dev_lock);
if (hba->pcidev)
pci_dev_put(hba->pcidev);
bnx2i_deregister_xport(hba);
bnx2i_free_hba(hba);
}
/**
* bnx2i_get_stats - Retrieve various statistic from iSCSI offload
* @handle: bnx2i_hba
*
* function callback exported via bnx2i - cnic driver interface to
* retrieve various iSCSI offload related statistics.
*/
int bnx2i_get_stats(void *handle)
{
struct bnx2i_hba *hba = handle;
struct iscsi_stats_info *stats;
if (!hba)
return -EINVAL;
stats = (struct iscsi_stats_info *)hba->cnic->stats_addr;
if (!stats)
return -ENOMEM;
memcpy(stats->version, DRV_MODULE_VERSION, sizeof(stats->version));
memcpy(stats->mac_add1 + 2, hba->cnic->mac_addr, ETH_ALEN);
stats->max_frame_size = hba->netdev->mtu;
stats->txq_size = hba->max_sqes;
stats->rxq_size = hba->max_cqes;
/* Loop through all ep to get the cqe_left average */
stats->txq_avg_depth = 0;
stats->rxq_avg_depth = 0;
spin_lock_bh(&hba->stat_lock);
GET_STATS_64(hba, stats, rx_pdus);
GET_STATS_64(hba, stats, rx_bytes);
GET_STATS_64(hba, stats, tx_pdus);
GET_STATS_64(hba, stats, tx_bytes);
spin_unlock_bh(&hba->stat_lock);
return 0;
}
/**
* bnx2i_mod_init - module init entry point
*
* initialize any driver wide global data structures such as endpoint pool,
* tcp port manager/queue, sysfs. finally driver will register itself
* with the cnic module
**/
static int __init bnx2i_mod_init(void)
{
int rc;
printk(KERN_INFO "%s", version);
bnx2i_param_check_range();
INIT_LIST_HEAD(&adapter_list);
adapter_count = 0;
mutex_init(&bnx2i_dev_lock);
rc = bnx2i_alloc_ep_pool();
if (rc) {
printk(KERN_ERR "bnx2i: unable to alloc ep pool\n");
goto out;
}
#ifndef __VMKLNX__
rc = bnx2i_init_tcp_port_mngr();
if (rc) {
printk(KERN_ERR "bnx2i: unable init TCP port manager\n");
goto tcp_mgr_err;
}
/* create 'sysfs' class object */
rc = bnx2i_sysfs_setup();
if (rc)
goto sysfs_err;
#endif
rc = cnic_register_driver(CNIC_ULP_ISCSI, &bnx2i_cnic_cb);
if (rc) {
printk(KERN_ERR "bnx2i: unable to register driver with cnic module\n");
goto drv_reg_failed;
}
#ifdef __VMKLNX__
bnx2i_lookup_iscsi_hba_vm();
#else
bnx2i_ioctl_init();
#endif
return 0;
drv_reg_failed:
#ifndef __VMKLNX__
bnx2i_sysfs_cleanup();
sysfs_err:
bnx2i_cleanup_tcp_port_mngr();
tcp_mgr_err:
#endif
bnx2i_release_ep_pool();
out:
return rc;
}
/**
* bnx2i_mod_exit - module cleanup/exit entry point
*
* Global resource lock and host adapter lock is held during critical sections
* in this function. Driver will browse through the adapter list, cleans-up
* each instance, unregisters iscsi transport name and finally driver will
* unregister itself with the cnic module
**/
static void __exit bnx2i_mod_exit(void)
{
struct bnx2i_hba *hba;
mutex_lock(&bnx2i_dev_lock);
while (!list_empty(&adapter_list)) {
hba = list_entry(adapter_list.next, struct bnx2i_hba, link);
#ifndef __VMKLNX__
/* cleanup 'sysfs' devices and classes */
bnx2i_unregister_sysfs(hba);
#endif
if (test_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic)) {
hba->cnic->unregister_device(hba->cnic, CNIC_ULP_ISCSI);
clear_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic);
#ifndef __VMKLNX__
bnx2i_unbind_adapter_devices(hba);
#endif
}
if (hba->pcidev)
pci_dev_put(hba->pcidev);
bnx2i_deregister_xport(hba);
bnx2i_free_hba(hba);
}
mutex_unlock(&bnx2i_dev_lock);
#ifndef __VMKLNX__
bnx2i_ioctl_cleanup();
#endif
cnic_unregister_driver(CNIC_ULP_ISCSI);
#ifndef __VMKLNX__
bnx2i_sysfs_cleanup();
bnx2i_cleanup_tcp_port_mngr();
#endif
bnx2i_release_ep_pool();
}
module_init(bnx2i_mod_init);
module_exit(bnx2i_mod_exit);
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