From c1b43dca137f2154845122417fba86d4bae67182 Mon Sep 17 00:00:00 2001 From: Eli Cohen Date: Tue, 22 Mar 2011 22:38:41 +0000 Subject: mlx4: Add blue flame support for kernel consumers Using blue flame can improve latency by allowing the HW to more efficiently access the WQE. This patch presents two functions that are used to allocate or release HW resources for using blue flame; the caller need to supply a struct mlx4_bf object when allocating resources. Consumers that make use of this API should post doorbells to the UAR object pointed by the initialized struct mlx4_bf; Signed-off-by: Eli Cohen Signed-off-by: David S. Miller --- include/linux/mlx4/device.h | 13 +++++++++++++ include/linux/mlx4/qp.h | 1 + 2 files changed, 14 insertions(+) (limited to 'include/linux/mlx4') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index 56fa5e1cd6d4..8985768e2c0d 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -351,6 +351,17 @@ struct mlx4_fmr { struct mlx4_uar { unsigned long pfn; int index; + struct list_head bf_list; + unsigned free_bf_bmap; + void __iomem *map; + void __iomem *bf_map; +}; + +struct mlx4_bf { + unsigned long offset; + int buf_size; + struct mlx4_uar *uar; + void __iomem *reg; }; struct mlx4_cq { @@ -478,6 +489,8 @@ void mlx4_pd_free(struct mlx4_dev *dev, u32 pdn); int mlx4_uar_alloc(struct mlx4_dev *dev, struct mlx4_uar *uar); void mlx4_uar_free(struct mlx4_dev *dev, struct mlx4_uar *uar); +int mlx4_bf_alloc(struct mlx4_dev *dev, struct mlx4_bf *bf); +void mlx4_bf_free(struct mlx4_dev *dev, struct mlx4_bf *bf); int mlx4_mtt_init(struct mlx4_dev *dev, int npages, int page_shift, struct mlx4_mtt *mtt); diff --git a/include/linux/mlx4/qp.h b/include/linux/mlx4/qp.h index 0eeb2a1a867c..9e9eb21056ca 100644 --- a/include/linux/mlx4/qp.h +++ b/include/linux/mlx4/qp.h @@ -303,6 +303,7 @@ struct mlx4_wqe_data_seg { enum { MLX4_INLINE_ALIGN = 64, + MLX4_INLINE_SEG = 1 << 31, }; struct mlx4_wqe_inline_seg { -- cgit v1.2.1