[dpdk-dev] [PATCH 17/35] net/mlx5/windows: support open device

[Tal Shnaiderman <talshn@nvidia.com>]

From: Ophir Munk <ophirmu@nvidia.com>

This commit implements mlx5_os_open_device() API. It calls glue API
open_device() then glue API query_device() to fill in 'struct
mlx5_context' with data for later usage.

Signed-off-by: Ophir Munk <ophirmu@nvidia.com>
Signed-off-by: Tal Shnaiderman <talshn@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
---
 drivers/net/mlx5/windows/mlx5_os.c | 44 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/drivers/net/mlx5/windows/mlx5_os.c b/drivers/net/mlx5/windows/mlx5_os.c
index 01d66cc855..14bd5bf39a 100644
--- a/drivers/net/mlx5/windows/mlx5_os.c
+++ b/drivers/net/mlx5/windows/mlx5_os.c
@@ -103,6 +103,50 @@ mlx5_os_set_nonblock_channel_fd(int fd)
 	return -ENOTSUP;
 }
 
+/**
+ * Function API open device under Windows
+ *
+ * This function calls the Windows glue APIs to open a device.
+ *
+ * @param[in] spawn
+ *   Pointer to the device attributes (name, port, etc).
+ * @param[out] config
+ *   Pointer to device configuration structure.
+ * @param[out] sh
+ *   Pointer to shared context structure.
+ *
+ * @return
+ *   0 on success, a positive error value otherwise.
+ */
+int
+mlx5_os_open_device(const struct mlx5_dev_spawn_data *spawn,
+		 const struct mlx5_dev_config *config,
+		 struct mlx5_dev_ctx_shared *sh)
+{
+	RTE_SET_USED(config);
+	int err = 0;
+	struct mlx5_context *mlx5_ctx;
+
+	pthread_mutex_init(&sh->txpp.mutex, NULL);
+	/* Set numa node from pci probe */
+	sh->numa_node = spawn->pci_dev->device.numa_node;
+
+	/* Try to open device with DevX */
+	rte_errno = 0;
+	sh->ctx = mlx5_glue->open_device(spawn->phys_dev);
+	if (!sh->ctx) {
+		DRV_LOG(ERR, "open_device failed");
+		err = errno;
+		return err;
+	}
+	sh->devx = 1;
+	mlx5_ctx = (struct mlx5_context *)sh->ctx;
+	err = mlx5_glue->query_device(spawn->phys_dev, &mlx5_ctx->mlx5_dev);
+	if (err)
+		DRV_LOG(ERR, "Failed to query device context fields.");
+	return err;
+}
+
 /**
  * This function should share events between multiple ports of single IB
  * device.  Currently it has no support under Windows.
-- 
2.16.1.windows.4