iw_cxgb3: handle chip reset notifications
Freeze activity when notified that the underlying chip
is getting reset on a EEH event or fatal error.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/infiniband/hw/cxgb3/cxio_hal.c b/drivers/infiniband/hw/cxgb3/cxio_hal.c
index 4dcf08b..11efd35 100644
--- a/drivers/infiniband/hw/cxgb3/cxio_hal.c
+++ b/drivers/infiniband/hw/cxgb3/cxio_hal.c
@@ -701,6 +701,9 @@
u32 stag_idx;
u32 wptr;
+ if (rdev_p->flags)
+ return -EIO;
+
stag_state = stag_state > 0;
stag_idx = (*stag) >> 8;
diff --git a/drivers/infiniband/hw/cxgb3/cxio_hal.h b/drivers/infiniband/hw/cxgb3/cxio_hal.h
index 656fe47..9ed65b0 100644
--- a/drivers/infiniband/hw/cxgb3/cxio_hal.h
+++ b/drivers/infiniband/hw/cxgb3/cxio_hal.h
@@ -108,6 +108,8 @@
struct gen_pool *pbl_pool;
struct gen_pool *rqt_pool;
struct list_head entry;
+ u32 flags;
+#define CXIO_ERROR_FATAL 1
};
static inline int cxio_num_stags(struct cxio_rdev *rdev_p)
diff --git a/drivers/infiniband/hw/cxgb3/iwch.c b/drivers/infiniband/hw/cxgb3/iwch.c
index 4489c89..37a4fc2 100644
--- a/drivers/infiniband/hw/cxgb3/iwch.c
+++ b/drivers/infiniband/hw/cxgb3/iwch.c
@@ -51,13 +51,15 @@
static void open_rnic_dev(struct t3cdev *);
static void close_rnic_dev(struct t3cdev *);
+static void iwch_err_handler(struct t3cdev *, u32, u32);
struct cxgb3_client t3c_client = {
.name = "iw_cxgb3",
.add = open_rnic_dev,
.remove = close_rnic_dev,
.handlers = t3c_handlers,
- .redirect = iwch_ep_redirect
+ .redirect = iwch_ep_redirect,
+ .err_handler = iwch_err_handler
};
static LIST_HEAD(dev_list);
@@ -160,6 +162,17 @@
mutex_unlock(&dev_mutex);
}
+static void iwch_err_handler(struct t3cdev *tdev, u32 status, u32 error)
+{
+ struct cxio_rdev *rdev = tdev->ulp;
+
+ if (status == OFFLOAD_STATUS_DOWN)
+ rdev->flags = CXIO_ERROR_FATAL;
+
+ return;
+
+}
+
static int __init iwch_init_module(void)
{
int err;