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From: Saeed Mahameed <saeedm@mellanox.com>
To: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org, Huy Nguyen <huyn@mellanox.com>,
	Saeed Mahameed <saeedm@mellanox.com>
Subject: [net-next 03/12] net/mlx5: Add MLX5_SET16 and MLX5_GET16
Date: Sat,  4 Nov 2017 01:50:21 -0700	[thread overview]
Message-ID: <20171104085030.25430-4-saeedm@mellanox.com> (raw)
In-Reply-To: <20171104085030.25430-1-saeedm@mellanox.com>

From: Huy Nguyen <huyn@mellanox.com>

Add MLX5_SET16 and MLX5_GET16 for 16bit structure field in firmware
command.

Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
---
 include/linux/mlx5/device.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h
index 6d79b3f79458..409ffb14298a 100644
--- a/include/linux/mlx5/device.h
+++ b/include/linux/mlx5/device.h
@@ -49,11 +49,15 @@
 #define __mlx5_nullp(typ) ((struct mlx5_ifc_##typ##_bits *)0)
 #define __mlx5_bit_sz(typ, fld) sizeof(__mlx5_nullp(typ)->fld)
 #define __mlx5_bit_off(typ, fld) (offsetof(struct mlx5_ifc_##typ##_bits, fld))
+#define __mlx5_16_off(typ, fld) (__mlx5_bit_off(typ, fld) / 16)
 #define __mlx5_dw_off(typ, fld) (__mlx5_bit_off(typ, fld) / 32)
 #define __mlx5_64_off(typ, fld) (__mlx5_bit_off(typ, fld) / 64)
+#define __mlx5_16_bit_off(typ, fld) (16 - __mlx5_bit_sz(typ, fld) - (__mlx5_bit_off(typ, fld) & 0xf))
 #define __mlx5_dw_bit_off(typ, fld) (32 - __mlx5_bit_sz(typ, fld) - (__mlx5_bit_off(typ, fld) & 0x1f))
 #define __mlx5_mask(typ, fld) ((u32)((1ull << __mlx5_bit_sz(typ, fld)) - 1))
 #define __mlx5_dw_mask(typ, fld) (__mlx5_mask(typ, fld) << __mlx5_dw_bit_off(typ, fld))
+#define __mlx5_mask16(typ, fld) ((u16)((1ull << __mlx5_bit_sz(typ, fld)) - 1))
+#define __mlx5_16_mask(typ, fld) (__mlx5_mask16(typ, fld) << __mlx5_16_bit_off(typ, fld))
 #define __mlx5_st_sz_bits(typ) sizeof(struct mlx5_ifc_##typ##_bits)
 
 #define MLX5_FLD_SZ_BYTES(typ, fld) (__mlx5_bit_sz(typ, fld) / 8)
@@ -116,6 +120,19 @@ __mlx5_mask(typ, fld))
 	___t; \
 })
 
+#define MLX5_GET16(typ, p, fld) ((be16_to_cpu(*((__be16 *)(p) +\
+__mlx5_16_off(typ, fld))) >> __mlx5_16_bit_off(typ, fld)) & \
+__mlx5_mask16(typ, fld))
+
+#define MLX5_SET16(typ, p, fld, v) do { \
+	u16 _v = v; \
+	BUILD_BUG_ON(__mlx5_st_sz_bits(typ) % 16);             \
+	*((__be16 *)(p) + __mlx5_16_off(typ, fld)) = \
+	cpu_to_be16((be16_to_cpu(*((__be16 *)(p) + __mlx5_16_off(typ, fld))) & \
+		     (~__mlx5_16_mask(typ, fld))) | (((_v) & __mlx5_mask16(typ, fld)) \
+		     << __mlx5_16_bit_off(typ, fld))); \
+} while (0)
+
 /* Big endian getters */
 #define MLX5_GET64_BE(typ, p, fld) (*((__be64 *)(p) +\
 	__mlx5_64_off(typ, fld)))
-- 
2.14.2

  parent reply	other threads:[~2017-11-04  8:52 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-04  8:50 [pull request][net-next 00/12] Mellanox, mlx5 updates 2017-11-04 Saeed Mahameed
2017-11-04  8:50 ` [net-next 01/12] net/dcb: Add dscp to priority selector type Saeed Mahameed
2017-11-04  8:50 ` [net-next 02/12] net/mlx5: QCAM register firmware command support Saeed Mahameed
2017-11-04  9:04   ` Or Gerlitz
2017-11-04  8:50 ` Saeed Mahameed [this message]
2017-11-04  9:05   ` [net-next 03/12] net/mlx5: Add MLX5_SET16 and MLX5_GET16 Or Gerlitz
2017-11-04  9:35     ` David Miller
2017-11-04 12:55       ` Or Gerlitz
2017-11-05  4:20         ` Saeed Mahameed
2017-11-04  8:50 ` [net-next 04/12] net/mlx5: QPTS and QPDPM register firmware command support Saeed Mahameed
2017-11-04  9:06   ` Or Gerlitz
2017-11-04  8:50 ` [net-next 05/12] net/mlx5e: Add dcbnl dscp to priority support Saeed Mahameed
2017-11-04  8:50 ` [net-next 06/12] net/mlx5e: Support DSCP trust state to Ethernet's IP packet on SQ Saeed Mahameed
2017-11-04  9:07   ` Or Gerlitz
2017-11-04  8:50 ` [net-next 07/12] net/mlx5e: Add support for ethtool msglvl support Saeed Mahameed
2017-11-04  8:50 ` [net-next 08/12] net/mlx5e: DCBNL, Add debug messages log Saeed Mahameed
2017-11-04  8:50 ` [net-next 09/12] net/mlx5: Enlarge the NIC TC offload table size Saeed Mahameed
2017-11-04  8:50 ` [net-next 10/12] net/mlx5: Initialize destination_flow struct to 0 Saeed Mahameed
2017-11-04  8:50 ` [net-next 11/12] net/mlx5e: IPoIB, Add inner TTC table to IPoIB flow steering Saeed Mahameed
2017-11-04  8:50 ` [net-next 12/12] net/mlx5e: Enable CQE based moderation on TX CQ Saeed Mahameed

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