lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

mlx4: Add blue flame support for kernel consumers

Browse Source 
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 <eli@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eli Cohen
2011-03-22 22:38:41 +00:00
committed by David S. Miller
parent 1679200f91
commit c1b43dca13
5 changed files with 142 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
include/linux/mlx4/device.h
View File

@@ -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);