Author: hselasky
Date: Tue Feb 13 15:13:15 2018
New Revision: 329209
URL: https://svnweb.freebsd.org/changeset/base/329209
Log:
MFC r325651:
Set ATOMIC endian mode in mlx5 core.
The hardware is capable of 2 requestor endianness modes for standard 8
byte atomics: BE (0x0) and host endianness (0x1). Read the supported
modes from hca atomic capabilities and configure HW to host endianness
mode if supported.
Sponsored by: Mellanox Technologies
Modified:
stable/11/sys/dev/mlx5/mlx5_core/mlx5_main.c
stable/11/sys/dev/mlx5/mlx5_ifc.h
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/dev/mlx5/mlx5_core/mlx5_main.c
==============================================================================
--- stable/11/sys/dev/mlx5/mlx5_core/mlx5_main.c Tue Feb 13 15:11:00
2018 (r329208)
+++ stable/11/sys/dev/mlx5/mlx5_core/mlx5_main.c Tue Feb 13 15:13:15
2018 (r329209)
@@ -74,6 +74,11 @@ struct mlx5_device_context {
void *context;
};
+enum {
+ MLX5_ATOMIC_REQ_MODE_BE = 0x0,
+ MLX5_ATOMIC_REQ_MODE_HOST_ENDIANNESS = 0x1,
+};
+
static struct mlx5_profile profiles[] = {
[0] = {
.mask = 0,
@@ -393,6 +398,53 @@ query_ex:
return err;
}
+static int handle_hca_cap_atomic(struct mlx5_core_dev *dev)
+{
+ void *set_ctx;
+ void *set_hca_cap;
+ int set_sz = MLX5_ST_SZ_BYTES(set_hca_cap_in);
+ int req_endianness;
+ int err;
+
+ if (MLX5_CAP_GEN(dev, atomic)) {
+ err = mlx5_core_get_caps(dev, MLX5_CAP_ATOMIC,
+ HCA_CAP_OPMOD_GET_MAX);
+ if (err)
+ return err;
+
+ err = mlx5_core_get_caps(dev, MLX5_CAP_ATOMIC,
+ HCA_CAP_OPMOD_GET_CUR);
+ if (err)
+ return err;
+ } else {
+ return 0;
+ }
+
+ req_endianness =
+ MLX5_CAP_ATOMIC(dev,
+ supported_atomic_req_8B_endianess_mode_1);
+
+ if (req_endianness != MLX5_ATOMIC_REQ_MODE_HOST_ENDIANNESS)
+ return 0;
+
+ set_ctx = kzalloc(set_sz, GFP_KERNEL);
+ if (!set_ctx)
+ return -ENOMEM;
+
+ MLX5_SET(set_hca_cap_in, set_ctx, op_mod,
+ MLX5_SET_HCA_CAP_OP_MOD_ATOMIC << 1);
+ set_hca_cap = MLX5_ADDR_OF(set_hca_cap_in, set_ctx, capability);
+
+ /* Set requestor to host endianness */
+ MLX5_SET(atomic_caps, set_hca_cap, atomic_req_8B_endianess_mode,
+ MLX5_ATOMIC_REQ_MODE_HOST_ENDIANNESS);
+
+ err = set_caps(dev, set_ctx, set_sz);
+
+ kfree(set_ctx);
+ return err;
+}
+
static int set_hca_ctrl(struct mlx5_core_dev *dev)
{
struct mlx5_reg_host_endianess he_in;
@@ -717,15 +769,21 @@ static int mlx5_dev_init(struct mlx5_core_dev *dev, st
goto err_pagealloc_stop;
}
+ err = set_hca_ctrl(dev);
+ if (err) {
+ device_printf((&pdev->dev)->bsddev, "ERR: ""set_hca_ctrl
failed\n");
+ goto reclaim_boot_pages;
+ }
+
err = handle_hca_cap(dev);
if (err) {
device_printf((&pdev->dev)->bsddev, "ERR: ""handle_hca_cap
failed\n");
goto reclaim_boot_pages;
}
- err = set_hca_ctrl(dev);
+ err = handle_hca_cap_atomic(dev);
if (err) {
- device_printf((&pdev->dev)->bsddev, "ERR: ""set_hca_ctrl
failed\n");
+ device_printf((&pdev->dev)->bsddev, "ERR:
""handle_hca_cap_atomic failed\n");
goto reclaim_boot_pages;
}
Modified: stable/11/sys/dev/mlx5/mlx5_ifc.h
==============================================================================
--- stable/11/sys/dev/mlx5/mlx5_ifc.h Tue Feb 13 15:11:00 2018
(r329208)
+++ stable/11/sys/dev/mlx5/mlx5_ifc.h Tue Feb 13 15:13:15 2018
(r329209)
@@ -74,6 +74,11 @@ enum {
};
enum {
+ MLX5_SET_HCA_CAP_OP_MOD_GENERAL_DEVICE = 0x0,
+ MLX5_SET_HCA_CAP_OP_MOD_ATOMIC = 0x3,
+};
+
+enum {
MLX5_CMD_OP_QUERY_HCA_CAP = 0x100,
MLX5_CMD_OP_QUERY_ADAPTER = 0x101,
MLX5_CMD_OP_INIT_HCA = 0x102,
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