RDMA/bnxt_re: Add Async event handling support

Using the option provided by Ethernet driver, register for FW Async
event. During probe, while registeriung with Ethernet driver, provide
the ulp hook 'ulp_async_notifier' for receiving the firmware events.

Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Link: https://patch.msgid.link/20250107024553.2926983-3-kalesh-anakkur.purayil@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

diff --git a/drivers/infiniband/hw/bnxt_re/bnxt_re.h b/drivers/infiniband/hw/bnxt_re/bnxt_re.h
index 2975b11b79bf770d2a494f6064e333f539f135ca..018386295bcd59d63dda126427d688f8a0fb3de7 100644 (file)
--- a/drivers/infiniband/hw/bnxt_re/bnxt_re.h
+++ b/drivers/infiniband/hw/bnxt_re/bnxt_re.h
@@ -229,6 +229,7 @@ struct bnxt_re_dev {
        DECLARE_HASHTABLE(srq_hash, MAX_SRQ_HASH_BITS);
        struct dentry                   *dbg_root;
        struct dentry                   *qp_debugfs;
+       unsigned long                   event_bitmap;
 };
 
 #define to_bnxt_re_dev(ptr, member)    \

diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c
index 6d1800e285eff0051d3a82e985b3ee5091245b0d..54dee0f5dd3f564be139026082e687ff4dd3d252 100644 (file)
--- a/drivers/infiniband/hw/bnxt_re/main.c
+++ b/drivers/infiniband/hw/bnxt_re/main.c
@@ -295,6 +295,20 @@ static void bnxt_re_vf_res_config(struct bnxt_re_dev *rdev)
                                      &rdev->qplib_ctx);
 }
 
+static void bnxt_re_async_notifier(void *handle, struct hwrm_async_event_cmpl *cmpl)
+{
+       struct bnxt_re_dev *rdev = (struct bnxt_re_dev *)handle;
+       u32 data1, data2;
+       u16 event_id;
+
+       event_id = le16_to_cpu(cmpl->event_id);
+       data1 = le32_to_cpu(cmpl->event_data1);
+       data2 = le32_to_cpu(cmpl->event_data2);
+
+       ibdev_dbg(&rdev->ibdev, "Async event_id = %d data1 = %d data2 = %d",
+                 event_id, data1, data2);
+}
+
 static void bnxt_re_stop_irq(void *handle)
 {
        struct bnxt_re_en_dev_info *en_info = auxiliary_get_drvdata(handle);
@@ -361,6 +375,7 @@ static void bnxt_re_start_irq(void *handle, struct bnxt_msix_entry *ent)
 }
 
 static struct bnxt_ulp_ops bnxt_re_ulp_ops = {
+       .ulp_async_notifier = bnxt_re_async_notifier,
        .ulp_irq_stop = bnxt_re_stop_irq,
        .ulp_irq_restart = bnxt_re_start_irq
 };
@@ -1785,6 +1800,26 @@ static int bnxt_re_setup_qos(struct bnxt_re_dev *rdev)
        return 0;
 }
 
+static void bnxt_re_net_unregister_async_event(struct bnxt_re_dev *rdev)
+{
+       if (rdev->is_virtfn)
+               return;
+
+       memset(&rdev->event_bitmap, 0, sizeof(rdev->event_bitmap));
+       bnxt_register_async_events(rdev->en_dev, &rdev->event_bitmap,
+                                  ASYNC_EVENT_CMPL_EVENT_ID_DCB_CONFIG_CHANGE);
+}
+
+static void bnxt_re_net_register_async_event(struct bnxt_re_dev *rdev)
+{
+       if (rdev->is_virtfn)
+               return;
+
+       rdev->event_bitmap |= (1 << ASYNC_EVENT_CMPL_EVENT_ID_DCB_CONFIG_CHANGE);
+       bnxt_register_async_events(rdev->en_dev, &rdev->event_bitmap,
+                                  ASYNC_EVENT_CMPL_EVENT_ID_DCB_CONFIG_CHANGE);
+}
+
 static void bnxt_re_query_hwrm_intf_version(struct bnxt_re_dev *rdev)
 {
        struct bnxt_en_dev *en_dev = rdev->en_dev;
@@ -1864,6 +1899,8 @@ static void bnxt_re_dev_uninit(struct bnxt_re_dev *rdev, u8 op_type)
 
        bnxt_re_debugfs_rem_pdev(rdev);
 
+       bnxt_re_net_unregister_async_event(rdev);
+
        if (test_and_clear_bit(BNXT_RE_FLAG_QOS_WORK_REG, &rdev->flags))
                cancel_delayed_work_sync(&rdev->worker);
 
@@ -2077,6 +2114,8 @@ static int bnxt_re_dev_init(struct bnxt_re_dev *rdev, u8 op_type)
 
        bnxt_re_debugfs_add_pdev(rdev);
 
+       bnxt_re_net_register_async_event(rdev);
+
        return 0;
 free_sctx:
        bnxt_re_net_stats_ctx_free(rdev, rdev->qplib_ctx.stats.fw_id);

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
index 59c280634bc5f690385bf30e6be6ef3f6bd4acbf..3e17db0a453e0ebaba72a61b6e9dc6abe3222b74 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
@@ -373,9 +373,8 @@ exit_unlock_rcu:
        rcu_read_unlock();
 }
 
-int bnxt_register_async_events(struct bnxt_en_dev *edev,
-                              unsigned long *events_bmap,
-                              u16 max_id)
+void bnxt_register_async_events(struct bnxt_en_dev *edev,
+                               unsigned long *events_bmap, u16 max_id)
 {
        struct net_device *dev = edev->net;
        struct bnxt *bp = netdev_priv(dev);
@@ -387,7 +386,6 @@ int bnxt_register_async_events(struct bnxt_en_dev *edev,
        smp_wmb();
        ulp->max_async_event_id = max_id;
        bnxt_hwrm_func_drv_rgtr(bp, events_bmap, max_id + 1, true);
-       return 0;
 }
 EXPORT_SYMBOL(bnxt_register_async_events);
 

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h
index a21294cf197b840eaeb19c8be89f9963c2ecd5a3..ee6a5b8562c3e8e842843589e599279010bfbd41 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h
@@ -126,6 +126,6 @@ int bnxt_register_dev(struct bnxt_en_dev *edev, struct bnxt_ulp_ops *ulp_ops,
                      void *handle);
 void bnxt_unregister_dev(struct bnxt_en_dev *edev);
 int bnxt_send_msg(struct bnxt_en_dev *edev, struct bnxt_fw_msg *fw_msg);
-int bnxt_register_async_events(struct bnxt_en_dev *edev,
-                              unsigned long *events_bmap, u16 max_id);
+void bnxt_register_async_events(struct bnxt_en_dev *edev,
+                               unsigned long *events_bmap, u16 max_id);
 #endif