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Diffstat (limited to 'drivers/scsi/bnx2i/bnx2i_init.c')
-rw-r--r--drivers/scsi/bnx2i/bnx2i_init.c331
1 files changed, 222 insertions, 109 deletions
diff --git a/drivers/scsi/bnx2i/bnx2i_init.c b/drivers/scsi/bnx2i/bnx2i_init.c
index 50c2aa3b8eb..80c03b452d6 100644
--- a/drivers/scsi/bnx2i/bnx2i_init.c
+++ b/drivers/scsi/bnx2i/bnx2i_init.c
@@ -1,6 +1,6 @@
/* bnx2i.c: Broadcom NetXtreme II iSCSI driver.
*
- * Copyright (c) 2006 - 2009 Broadcom Corporation
+ * Copyright (c) 2006 - 2013 Broadcom Corporation
* Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved.
* Copyright (c) 2007, 2008 Mike Christie
*
@@ -9,6 +9,7 @@
* the Free Software Foundation.
*
* Written by: Anil Veerabhadrappa (anilgv@broadcom.com)
+ * Maintained by: Eddie Wai (eddie.wai@broadcom.com)
*/
#include "bnx2i.h"
@@ -17,10 +18,10 @@ static struct list_head adapter_list = LIST_HEAD_INIT(adapter_list);
static u32 adapter_count;
#define DRV_MODULE_NAME "bnx2i"
-#define DRV_MODULE_VERSION "2.1.3"
-#define DRV_MODULE_RELDATE "Aug 10, 2010"
+#define DRV_MODULE_VERSION "2.7.6.2"
+#define DRV_MODULE_RELDATE "Jun 06, 2013"
-static char version[] __devinitdata =
+static char version[] =
"Broadcom NetXtreme II iSCSI Driver " DRV_MODULE_NAME \
" v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
@@ -28,8 +29,8 @@ static char version[] __devinitdata =
MODULE_AUTHOR("Anil Veerabhadrappa <anilgv@broadcom.com> and "
"Eddie Wai <eddie.wai@broadcom.com>");
-MODULE_DESCRIPTION("Broadcom NetXtreme II BCM5706/5708/5709/57710/57711"
- " iSCSI Driver");
+MODULE_DESCRIPTION("Broadcom NetXtreme II BCM5706/5708/5709/57710/57711/57712"
+ "/57800/57810/57840 iSCSI Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_MODULE_VERSION);
@@ -39,7 +40,7 @@ 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 event_coal_div = 1;
+unsigned int event_coal_div = 2;
module_param(event_coal_div, int, 0664);
MODULE_PARM_DESC(event_coal_div, "Event Coalescing Divide Factor");
@@ -48,11 +49,11 @@ module_param(en_tcp_dack, int, 0664);
MODULE_PARM_DESC(en_tcp_dack, "Enable TCP Delayed ACK");
unsigned int error_mask1 = 0x00;
-module_param(error_mask1, int, 0664);
+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, int, 0664);
+module_param(error_mask2, uint, 0664);
MODULE_PARM_DESC(error_mask2, "Config FW iSCSI Error Mask #2");
unsigned int sq_size;
@@ -65,37 +66,46 @@ MODULE_PARM_DESC(rq_size, "Configure RQ size");
u64 iscsi_error_mask = 0x00;
-static void bnx2i_unreg_one_device(struct bnx2i_hba *hba) ;
+DEFINE_PER_CPU(struct bnx2i_percpu_s, bnx2i_percpu);
+
+static int bnx2i_cpu_callback(struct notifier_block *nfb,
+ unsigned long action, void *hcpu);
+/* notification function for CPU hotplug events */
+static struct notifier_block bnx2i_cpu_notifier = {
+ .notifier_call = bnx2i_cpu_callback,
+};
/**
* 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)
+void bnx2i_identify_device(struct bnx2i_hba *hba, struct cnic_dev *dev)
{
hba->cnic_dev_type = 0;
- 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 (hba->pci_did == PCI_DEVICE_ID_NX2_57710 ||
- hba->pci_did == PCI_DEVICE_ID_NX2_57711 ||
- hba->pci_did == PCI_DEVICE_ID_NX2_57711E)
+ 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
+ } else {
printk(KERN_ALERT "bnx2i: unknown device, 0x%x\n",
hba->pci_did);
+ }
}
@@ -162,8 +172,14 @@ void bnx2i_start(void *handle)
struct bnx2i_hba *hba = handle;
int i = HZ;
+ /* On some bnx2x devices, it is possible that iSCSI is no
+ * longer supported after firmware is downloaded. In that
+ * case, the iscsi_init_msg will return failure.
+ */
+
bnx2i_send_fw_iscsi_init_msg(hba);
- while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
+ while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) &&
+ !test_bit(ADAPTER_STATE_INIT_FAILED, &hba->adapter_state) && i--)
msleep(BNX2I_INIT_POLL_TIME);
}
@@ -211,13 +227,24 @@ void bnx2i_stop(void *handle)
{
struct bnx2i_hba *hba = handle;
int conns_active;
+ int wait_delay = 1 * HZ;
/* check if cleanup happened in GOING_DOWN context */
- if (!test_and_clear_bit(ADAPTER_STATE_GOING_DOWN,
- &hba->adapter_state))
+ if (!test_and_set_bit(ADAPTER_STATE_GOING_DOWN,
+ &hba->adapter_state)) {
iscsi_host_for_each_session(hba->shost,
bnx2i_drop_session);
-
+ wait_delay = hba->hba_shutdown_tmo;
+ }
+ /* Wait for inflight offload connection tasks to complete before
+ * proceeding. Forcefully terminate all connection recovery in
+ * progress at the earliest, either in bind(), send_pdu(LOGIN),
+ * or conn_start()
+ */
+ wait_event_interruptible_timeout(hba->eh_wait,
+ (list_empty(&hba->ep_ofld_list) &&
+ list_empty(&hba->ep_destroy_list)),
+ 2 * HZ);
/* Wait for all endpoints to be torn down, Chip will be reset once
* control returns to network driver. So it is required to cleanup and
* release all connection resources before returning from this routine.
@@ -226,7 +253,7 @@ void bnx2i_stop(void *handle)
conns_active = hba->ofld_conns_active;
wait_event_interruptible_timeout(hba->eh_wait,
(hba->ofld_conns_active != conns_active),
- hba->hba_shutdown_tmo);
+ wait_delay);
if (hba->ofld_conns_active == conns_active)
break;
}
@@ -235,88 +262,10 @@ void bnx2i_stop(void *handle)
/* This flag should be cleared last so that ep_disconnect() gracefully
* cleans up connection context
*/
+ clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
}
-/**
- * bnx2i_register_device - register bnx2i adapter instance with the cnic driver
- * @hba: Adapter instance to register
- *
- * registers bnx2i adapter instance with the cnic driver while holding the
- * adapter structure lock
- */
-void bnx2i_register_device(struct bnx2i_hba *hba)
-{
- int rc;
-
- if (test_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state) ||
- test_bit(BNX2I_CNIC_REGISTERED, &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_reg_dev_all - registers all 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, *temp;
-
- mutex_lock(&bnx2i_dev_lock);
- list_for_each_entry_safe(hba, temp, &adapter_list, link)
- bnx2i_register_device(hba);
- mutex_unlock(&bnx2i_dev_lock);
-}
-
-
-/**
- * bnx2i_unreg_one_device - unregister 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) ||
- test_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state))
- 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);
-}
-
-/**
- * bnx2i_unreg_dev_all - unregisters all bnx2i 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, *temp;
-
- mutex_lock(&bnx2i_dev_lock);
- list_for_each_entry_safe(hba, temp, &adapter_list, link)
- bnx2i_unreg_one_device(hba);
- mutex_unlock(&bnx2i_dev_lock);
-}
-
/**
* bnx2i_init_one - initialize an adapter instance and allocate memory resources
@@ -332,6 +281,13 @@ static int bnx2i_init_one(struct bnx2i_hba *hba, struct cnic_dev *cnic)
int rc;
mutex_lock(&bnx2i_dev_lock);
+ if (!cnic->max_iscsi_conn) {
+ printk(KERN_ALERT "bnx2i: dev %s does not support "
+ "iSCSI\n", hba->netdev->name);
+ rc = -EOPNOTSUPP;
+ goto out;
+ }
+
hba->cnic = cnic;
rc = cnic->register_device(cnic, CNIC_ULP_ISCSI, hba);
if (!rc) {
@@ -349,6 +305,7 @@ static int bnx2i_init_one(struct bnx2i_hba *hba, struct cnic_dev *cnic)
else
printk(KERN_ERR "bnx2i dev reg, unknown error, %d\n", rc);
+out:
mutex_unlock(&bnx2i_dev_lock);
return rc;
@@ -413,6 +370,132 @@ void bnx2i_ulp_exit(struct cnic_dev *dev)
/**
+ * 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;
+
+ strlcpy(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;
+
+ stats->txq_avg_depth = 0;
+ stats->rxq_avg_depth = 0;
+
+ 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);
+
+ return 0;
+}
+
+
+/**
+ * bnx2i_percpu_thread_create - Create a receive thread for an
+ * online CPU
+ *
+ * @cpu: cpu index for the online cpu
+ */
+static void bnx2i_percpu_thread_create(unsigned int cpu)
+{
+ struct bnx2i_percpu_s *p;
+ struct task_struct *thread;
+
+ p = &per_cpu(bnx2i_percpu, cpu);
+
+ thread = kthread_create_on_node(bnx2i_percpu_io_thread, (void *)p,
+ cpu_to_node(cpu),
+ "bnx2i_thread/%d", cpu);
+ /* bind thread to the cpu */
+ if (likely(!IS_ERR(thread))) {
+ kthread_bind(thread, cpu);
+ p->iothread = thread;
+ wake_up_process(thread);
+ }
+}
+
+
+static void bnx2i_percpu_thread_destroy(unsigned int cpu)
+{
+ struct bnx2i_percpu_s *p;
+ struct task_struct *thread;
+ struct bnx2i_work *work, *tmp;
+
+ /* Prevent any new work from being queued for this CPU */
+ p = &per_cpu(bnx2i_percpu, cpu);
+ spin_lock_bh(&p->p_work_lock);
+ thread = p->iothread;
+ p->iothread = NULL;
+
+ /* Free all work in the list */
+ list_for_each_entry_safe(work, tmp, &p->work_list, list) {
+ list_del_init(&work->list);
+ bnx2i_process_scsi_cmd_resp(work->session,
+ work->bnx2i_conn, &work->cqe);
+ kfree(work);
+ }
+
+ spin_unlock_bh(&p->p_work_lock);
+ if (thread)
+ kthread_stop(thread);
+}
+
+
+/**
+ * bnx2i_cpu_callback - Handler for CPU hotplug events
+ *
+ * @nfb: The callback data block
+ * @action: The event triggering the callback
+ * @hcpu: The index of the CPU that the event is for
+ *
+ * This creates or destroys per-CPU data for iSCSI
+ *
+ * Returns NOTIFY_OK always.
+ */
+static int bnx2i_cpu_callback(struct notifier_block *nfb,
+ unsigned long action, void *hcpu)
+{
+ unsigned cpu = (unsigned long)hcpu;
+
+ switch (action) {
+ case CPU_ONLINE:
+ case CPU_ONLINE_FROZEN:
+ printk(KERN_INFO "bnx2i: CPU %x online: Create Rx thread\n",
+ cpu);
+ bnx2i_percpu_thread_create(cpu);
+ break;
+ case CPU_DEAD:
+ case CPU_DEAD_FROZEN:
+ printk(KERN_INFO "CPU %x offline: Remove Rx thread\n", cpu);
+ bnx2i_percpu_thread_destroy(cpu);
+ break;
+ default:
+ break;
+ }
+ return NOTIFY_OK;
+}
+
+
+/**
* bnx2i_mod_init - module init entry point
*
* initialize any driver wide global data structures such as endpoint pool,
@@ -422,6 +505,8 @@ void bnx2i_ulp_exit(struct cnic_dev *dev)
static int __init bnx2i_mod_init(void)
{
int err;
+ unsigned cpu = 0;
+ struct bnx2i_percpu_s *p;
printk(KERN_INFO "%s", version);
@@ -444,6 +529,24 @@ static int __init bnx2i_mod_init(void)
goto unreg_xport;
}
+ /* Create percpu kernel threads to handle iSCSI I/O completions */
+ for_each_possible_cpu(cpu) {
+ p = &per_cpu(bnx2i_percpu, cpu);
+ INIT_LIST_HEAD(&p->work_list);
+ spin_lock_init(&p->p_work_lock);
+ p->iothread = NULL;
+ }
+
+ cpu_notifier_register_begin();
+
+ for_each_online_cpu(cpu)
+ bnx2i_percpu_thread_create(cpu);
+
+ /* Initialize per CPU interrupt thread */
+ __register_hotcpu_notifier(&bnx2i_cpu_notifier);
+
+ cpu_notifier_register_done();
+
return 0;
unreg_xport:
@@ -464,6 +567,7 @@ out:
static void __exit bnx2i_mod_exit(void)
{
struct bnx2i_hba *hba;
+ unsigned cpu = 0;
mutex_lock(&bnx2i_dev_lock);
while (!list_empty(&adapter_list)) {
@@ -481,6 +585,15 @@ static void __exit bnx2i_mod_exit(void)
}
mutex_unlock(&bnx2i_dev_lock);
+ cpu_notifier_register_begin();
+
+ for_each_online_cpu(cpu)
+ bnx2i_percpu_thread_destroy(cpu);
+
+ __unregister_hotcpu_notifier(&bnx2i_cpu_notifier);
+
+ cpu_notifier_register_done();
+
iscsi_unregister_transport(&bnx2i_iscsi_transport);
cnic_unregister_driver(CNIC_ULP_ISCSI);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-15 23:52:25 +0000