From 6533e2408e4a20ec7ffe54960e1955f00eba3c68 Mon Sep 17 00:00:00 2001
From: hselasky <hselasky@FreeBSD.org>
Date: Wed, 8 May 2019 10:39:53 +0000
Subject: [PATCH] Query and cache PCAM, MCAM registers on initialization in
 mlx5core.

On load_one, we now cache our capabilities registers internally, similar
to QUERY_HCA_CAP. Capabilities can later be queried using macros
introduced in this patch.

Linux commit:
71862561f3a62015a11de16d1c306481e8415c08

Submitted by:	slavash@
MFC after:	3 days
Sponsored by:	Mellanox Technologies
---
 sys/dev/mlx5/device.h            |  6 ++++++
 sys/dev/mlx5/driver.h            |  2 ++
 sys/dev/mlx5/mlx5_core/mlx5_fw.c | 14 ++++++++++++++
 3 files changed, 22 insertions(+)

diff --git a/sys/dev/mlx5/device.h b/sys/dev/mlx5/device.h
index 0b26a1b7727a..f3d325139c91 100644
--- a/sys/dev/mlx5/device.h
+++ b/sys/dev/mlx5/device.h
@@ -1050,6 +1050,12 @@ enum mlx5_mcam_feature_groups {
 	MLX5_GET(qos_cap,\
 		 mdev->hca_caps_max[MLX5_CAP_QOS], cap)
 
+#define MLX5_CAP_PCAM_FEATURE(mdev, fld) \
+	MLX5_GET(pcam_reg, (mdev)->caps.pcam, feature_cap_mask.enhanced_features.fld)
+
+#define MLX5_CAP_MCAM_FEATURE(mdev, fld) \
+	MLX5_GET(mcam_reg, (mdev)->caps.mcam, mng_feature_cap_mask.enhanced_features.fld)
+
 #define	MLX5_CAP_QCAM_REG(mdev, fld) \
 	MLX5_GET(qcam_reg, (mdev)->caps.qcam, qos_access_reg_cap_mask.reg_cap.fld)
 
diff --git a/sys/dev/mlx5/driver.h b/sys/dev/mlx5/driver.h
index 917349bc7075..017b52a80a5b 100644
--- a/sys/dev/mlx5/driver.h
+++ b/sys/dev/mlx5/driver.h
@@ -699,6 +699,8 @@ struct mlx5_core_dev {
 	u32 hca_caps_cur[MLX5_CAP_NUM][MLX5_UN_SZ_DW(hca_cap_union)];
 	u32 hca_caps_max[MLX5_CAP_NUM][MLX5_UN_SZ_DW(hca_cap_union)];
 	struct {
+		u32 pcam[MLX5_ST_SZ_DW(pcam_reg)];
+		u32 mcam[MLX5_ST_SZ_DW(mcam_reg)];
 		u32 qcam[MLX5_ST_SZ_DW(qcam_reg)];
 		u32 fpga[MLX5_ST_SZ_DW(fpga_cap)];
 	} caps;
diff --git a/sys/dev/mlx5/mlx5_core/mlx5_fw.c b/sys/dev/mlx5/mlx5_core/mlx5_fw.c
index 31962cad8212..94597b6d421e 100644
--- a/sys/dev/mlx5/mlx5_core/mlx5_fw.c
+++ b/sys/dev/mlx5/mlx5_core/mlx5_fw.c
@@ -117,6 +117,20 @@ static int mlx5_get_qcam_reg(struct mlx5_core_dev *dev)
 				   MLX5_QCAM_REGS_FIRST_128);
 }
 
+static int mlx5_get_pcam_reg(struct mlx5_core_dev *dev)
+{
+	return mlx5_query_pcam_reg(dev, dev->caps.pcam,
+				   MLX5_PCAM_FEATURE_ENHANCED_FEATURES,
+				   MLX5_PCAM_REGS_5000_TO_507F);
+}
+
+static int mlx5_get_mcam_reg(struct mlx5_core_dev *dev)
+{
+	return mlx5_query_mcam_reg(dev, dev->caps.mcam,
+				   MLX5_MCAM_FEATURE_ENHANCED_FEATURES,
+				   MLX5_MCAM_REGS_FIRST_128);
+}
+
 int mlx5_query_hca_caps(struct mlx5_core_dev *dev)
 {
 	int err;