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Date: Tue, 20 Nov 2018 14:12:23 -0800
From: Saeed Mahameed <saeedm@...lanox.com>
To: Leon Romanovsky <leonro@...lanox.com>, saeedm@...lanox.com
Cc: netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
Jason Gunthorpe <jgg@...lanox.com>
Subject: [PATCH mlx5-next 06/11] net/mlx5: FWPage, Use async events chain
Remove the explicit call to mlx5_core_req_pages_handler on
MLX5_EVENT_TYPE_PAGE_REQUEST and let FW page logic to register its own
handler when its ready.
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
drivers/net/ethernet/mellanox/mlx5/core/eq.c | 11 -----
.../net/ethernet/mellanox/mlx5/core/main.c | 27 ++++++------
.../ethernet/mellanox/mlx5/core/pagealloc.c | 44 +++++++++++++------
include/linux/mlx5/driver.h | 5 ++-
4 files changed, 47 insertions(+), 40 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
index 7c8b2d89645b..7f6a644700eb 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -398,17 +398,6 @@ static irqreturn_t mlx5_eq_async_int(int irq, void *eq_ptr)
mlx5_eq_cq_event(eq, cqn, eqe->type);
break;
- case MLX5_EVENT_TYPE_PAGE_REQUEST:
- {
- u16 func_id = be16_to_cpu(eqe->data.req_pages.func_id);
- s32 npages = be32_to_cpu(eqe->data.req_pages.num_pages);
-
- mlx5_core_dbg(dev, "page request for func 0x%x, npages %d\n",
- func_id, npages);
- mlx5_core_req_pages_handler(dev, func_id, npages);
- }
- break;
-
case MLX5_EVENT_TYPE_PORT_MODULE_EVENT:
mlx5_port_module_event(dev, eqe);
break;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index 91022f141855..9e4cd2757ea8 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -916,16 +916,10 @@ static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv,
goto reclaim_boot_pages;
}
- err = mlx5_pagealloc_start(dev);
- if (err) {
- dev_err(&pdev->dev, "mlx5_pagealloc_start failed\n");
- goto reclaim_boot_pages;
- }
-
err = mlx5_cmd_init_hca(dev, sw_owner_id);
if (err) {
dev_err(&pdev->dev, "init hca failed\n");
- goto err_pagealloc_stop;
+ goto reclaim_boot_pages;
}
mlx5_set_driver_version(dev);
@@ -953,6 +947,8 @@ static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv,
goto err_get_uars;
}
+ mlx5_pagealloc_start(dev);
+
err = mlx5_eq_table_create(dev);
if (err) {
dev_err(&pdev->dev, "Failed to create EQs\n");
@@ -1039,6 +1035,7 @@ static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv,
mlx5_eq_table_destroy(dev);
err_eq_table:
+ mlx5_pagealloc_stop(dev);
mlx5_put_uars_page(dev, priv->uar);
err_get_uars:
@@ -1052,9 +1049,6 @@ static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv,
goto out_err;
}
-err_pagealloc_stop:
- mlx5_pagealloc_stop(dev);
-
reclaim_boot_pages:
mlx5_reclaim_startup_pages(dev);
@@ -1100,16 +1094,18 @@ static int mlx5_unload_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv,
mlx5_fpga_device_stop(dev);
mlx5_fw_tracer_cleanup(dev->tracer);
mlx5_eq_table_destroy(dev);
+ mlx5_pagealloc_stop(dev);
mlx5_put_uars_page(dev, priv->uar);
+
if (cleanup)
mlx5_cleanup_once(dev);
mlx5_stop_health_poll(dev, cleanup);
+
err = mlx5_cmd_teardown_hca(dev);
if (err) {
dev_err(&dev->pdev->dev, "tear_down_hca failed, skip cleanup\n");
goto out;
}
- mlx5_pagealloc_stop(dev);
mlx5_reclaim_startup_pages(dev);
mlx5_core_disable_hca(dev, 0);
mlx5_cmd_cleanup(dev);
@@ -1186,12 +1182,14 @@ static int init_one(struct pci_dev *pdev,
goto close_pci;
}
- mlx5_pagealloc_init(dev);
+ err = mlx5_pagealloc_init(dev);
+ if (err)
+ goto err_pagealloc_init;
err = mlx5_load_one(dev, priv, true);
if (err) {
dev_err(&pdev->dev, "mlx5_load_one failed with error code %d\n", err);
- goto clean_health;
+ goto err_load_one;
}
request_module_nowait(MLX5_IB_MOD);
@@ -1205,8 +1203,9 @@ static int init_one(struct pci_dev *pdev,
clean_load:
mlx5_unload_one(dev, priv, true);
-clean_health:
+err_load_one:
mlx5_pagealloc_cleanup(dev);
+err_pagealloc_init:
mlx5_health_cleanup(dev);
close_pci:
mlx5_pci_close(dev, priv);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c b/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
index e36d3e3675f9..a83b517b0714 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
@@ -37,6 +37,7 @@
#include <linux/mlx5/driver.h>
#include <linux/mlx5/cmd.h>
#include "mlx5_core.h"
+#include "lib/eq.h"
enum {
MLX5_PAGES_CANT_GIVE = 0,
@@ -433,15 +434,28 @@ static void pages_work_handler(struct work_struct *work)
kfree(req);
}
-void mlx5_core_req_pages_handler(struct mlx5_core_dev *dev, u16 func_id,
- s32 npages)
+static int req_pages_handler(struct notifier_block *nb,
+ unsigned long type, void *data)
{
struct mlx5_pages_req *req;
-
+ struct mlx5_core_dev *dev;
+ struct mlx5_priv *priv;
+ struct mlx5_eqe *eqe;
+ u16 func_id;
+ s32 npages;
+
+ priv = mlx5_nb_cof(nb, struct mlx5_priv, pg_nb);
+ dev = container_of(priv, struct mlx5_core_dev, priv);
+ eqe = data;
+
+ func_id = be16_to_cpu(eqe->data.req_pages.func_id);
+ npages = be32_to_cpu(eqe->data.req_pages.num_pages);
+ mlx5_core_dbg(dev, "page request for func 0x%x, npages %d\n",
+ func_id, npages);
req = kzalloc(sizeof(*req), GFP_ATOMIC);
if (!req) {
mlx5_core_warn(dev, "failed to allocate pages request\n");
- return;
+ return NOTIFY_DONE;
}
req->dev = dev;
@@ -449,6 +463,7 @@ void mlx5_core_req_pages_handler(struct mlx5_core_dev *dev, u16 func_id,
req->npages = npages;
INIT_WORK(&req->work, pages_work_handler);
queue_work(dev->priv.pg_wq, &req->work);
+ return NOTIFY_OK;
}
int mlx5_satisfy_startup_pages(struct mlx5_core_dev *dev, int boot)
@@ -524,29 +539,32 @@ int mlx5_reclaim_startup_pages(struct mlx5_core_dev *dev)
return 0;
}
-void mlx5_pagealloc_init(struct mlx5_core_dev *dev)
+int mlx5_pagealloc_init(struct mlx5_core_dev *dev)
{
dev->priv.page_root = RB_ROOT;
INIT_LIST_HEAD(&dev->priv.free_list);
+ dev->priv.pg_wq = create_singlethread_workqueue("mlx5_page_allocator");
+ if (!dev->priv.pg_wq)
+ return -ENOMEM;
+
+ return 0;
}
void mlx5_pagealloc_cleanup(struct mlx5_core_dev *dev)
{
- /* nothing */
+ destroy_workqueue(dev->priv.pg_wq);
}
-int mlx5_pagealloc_start(struct mlx5_core_dev *dev)
+void mlx5_pagealloc_start(struct mlx5_core_dev *dev)
{
- dev->priv.pg_wq = create_singlethread_workqueue("mlx5_page_allocator");
- if (!dev->priv.pg_wq)
- return -ENOMEM;
-
- return 0;
+ MLX5_NB_INIT(&dev->priv.pg_nb, req_pages_handler, PAGE_REQUEST);
+ mlx5_eq_notifier_register(dev, &dev->priv.pg_nb);
}
void mlx5_pagealloc_stop(struct mlx5_core_dev *dev)
{
- destroy_workqueue(dev->priv.pg_wq);
+ mlx5_eq_notifier_unregister(dev, &dev->priv.pg_nb);
+ flush_workqueue(dev->priv.pg_wq);
}
int mlx5_wait_for_vf_pages(struct mlx5_core_dev *dev)
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index 99a23db9a929..61088ad33500 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -564,6 +564,7 @@ struct mlx5_priv {
struct mlx5_eq_table *eq_table;
/* pages stuff */
+ struct mlx5_nb pg_nb;
struct workqueue_struct *pg_wq;
struct rb_root page_root;
int fw_pages;
@@ -962,9 +963,9 @@ int mlx5_core_alloc_pd(struct mlx5_core_dev *dev, u32 *pdn);
int mlx5_core_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn);
int mlx5_core_mad_ifc(struct mlx5_core_dev *dev, const void *inb, void *outb,
u16 opmod, u8 port);
-void mlx5_pagealloc_init(struct mlx5_core_dev *dev);
+int mlx5_pagealloc_init(struct mlx5_core_dev *dev);
void mlx5_pagealloc_cleanup(struct mlx5_core_dev *dev);
-int mlx5_pagealloc_start(struct mlx5_core_dev *dev);
+void mlx5_pagealloc_start(struct mlx5_core_dev *dev);
void mlx5_pagealloc_stop(struct mlx5_core_dev *dev);
void mlx5_core_req_pages_handler(struct mlx5_core_dev *dev, u16 func_id,
s32 npages);
--
2.19.1
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