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mlxsw: spectrum_buffers: Cache shared buffer configuration 

In order to achieve faster dumping of current setting and also in order
to provide possibility to get pool mode without a need to query hardware,
do cache the configuration in driver.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2016-04-14 18:19:19 +02:00 committed by David S. Miller
parent aa99bc70ba
commit 078f9c7132
2 changed files with 82 additions and 19 deletions
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28
drivers/net/ethernet/mellanox/mlxsw/spectrum.h
View File

@ -117,6 +117,33 @@ static inline bool mlxsw_sp_fid_is_vfid(u16 fid)
return fid >= MLXSW_SP_VFID_BASE;
}
struct mlxsw_sp_sb_pr {
enum mlxsw_reg_sbpr_mode mode;
u32 size;
};
struct mlxsw_sp_sb_cm {
u32 min_buff;
u32 max_buff;
u8 pool;
};
struct mlxsw_sp_sb_pm {
u32 min_buff;
u32 max_buff;
};
#define MLXSW_SP_SB_POOL_COUNT 4
#define MLXSW_SP_SB_TC_COUNT 8
struct mlxsw_sp_sb {
struct mlxsw_sp_sb_pr prs[2][MLXSW_SP_SB_POOL_COUNT];
struct {
struct mlxsw_sp_sb_cm cms[2][MLXSW_SP_SB_TC_COUNT];
struct mlxsw_sp_sb_pm pms[2][MLXSW_SP_SB_POOL_COUNT];
} ports[MLXSW_PORT_MAX_PORTS];
};
struct mlxsw_sp {
struct {
struct list_head list;
@ -147,6 +174,7 @@ struct mlxsw_sp {
struct mlxsw_sp_upper master_bridge;
struct mlxsw_sp_upper lags[MLXSW_SP_LAG_MAX];
u8 port_to_module[MLXSW_PORT_MAX_PORTS];
struct mlxsw_sp_sb sb;
};
static inline struct mlxsw_sp_upper *

73
drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
View File

@ -42,14 +42,44 @@
#include "port.h"
#include "reg.h"
static struct mlxsw_sp_sb_pr *mlxsw_sp_sb_pr_get(struct mlxsw_sp *mlxsw_sp,
u8 pool,
enum mlxsw_reg_sbxx_dir dir)
{
return &mlxsw_sp->sb.prs[dir][pool];
}
static struct mlxsw_sp_sb_cm *mlxsw_sp_sb_cm_get(struct mlxsw_sp *mlxsw_sp,
u8 local_port, u8 pg_buff,
enum mlxsw_reg_sbxx_dir dir)
{
return &mlxsw_sp->sb.ports[local_port].cms[dir][pg_buff];
}
static struct mlxsw_sp_sb_pm *mlxsw_sp_sb_pm_get(struct mlxsw_sp *mlxsw_sp,
u8 local_port, u8 pool,
enum mlxsw_reg_sbxx_dir dir)
{
return &mlxsw_sp->sb.ports[local_port].pms[dir][pool];
}
static int mlxsw_sp_sb_pr_write(struct mlxsw_sp *mlxsw_sp, u8 pool,
enum mlxsw_reg_sbxx_dir dir,
enum mlxsw_reg_sbpr_mode mode, u32 size)
{
char sbpr_pl[MLXSW_REG_SBPR_LEN];
struct mlxsw_sp_sb_pr *pr;
int err;
mlxsw_reg_sbpr_pack(sbpr_pl, pool, dir, mode, size);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbpr), sbpr_pl);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbpr), sbpr_pl);
if (err)
return err;
pr = mlxsw_sp_sb_pr_get(mlxsw_sp, pool, dir);
pr->mode = mode;
pr->size = size;
return 0;
}
static int mlxsw_sp_sb_cm_write(struct mlxsw_sp *mlxsw_sp, u8 local_port,
@ -57,10 +87,22 @@ static int mlxsw_sp_sb_cm_write(struct mlxsw_sp *mlxsw_sp, u8 local_port,
u32 min_buff, u32 max_buff, u8 pool)
{
char sbcm_pl[MLXSW_REG_SBCM_LEN];
int err;
mlxsw_reg_sbcm_pack(sbcm_pl, local_port, pg_buff, dir,
min_buff, max_buff, pool);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbcm), sbcm_pl);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbcm), sbcm_pl);
if (err)
return err;
if (pg_buff < MLXSW_SP_SB_TC_COUNT) {
struct mlxsw_sp_sb_cm *cm;
cm = mlxsw_sp_sb_cm_get(mlxsw_sp, local_port, pg_buff, dir);
cm->min_buff = min_buff;
cm->max_buff = max_buff;
cm->pool = pool;
}
return 0;
}
static int mlxsw_sp_sb_pm_write(struct mlxsw_sp *mlxsw_sp, u8 local_port,
@ -68,9 +110,18 @@ static int mlxsw_sp_sb_pm_write(struct mlxsw_sp *mlxsw_sp, u8 local_port,
u32 min_buff, u32 max_buff)
{
char sbpm_pl[MLXSW_REG_SBPM_LEN];
struct mlxsw_sp_sb_pm *pm;
int err;
mlxsw_reg_sbpm_pack(sbpm_pl, local_port, pool, dir, min_buff, max_buff);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbpm), sbpm_pl);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbpm), sbpm_pl);
if (err)
return err;
pm = mlxsw_sp_sb_pm_get(mlxsw_sp, local_port, pool, dir);
pm->min_buff = min_buff;
pm->max_buff = max_buff;
return 0;
}
static const u16 mlxsw_sp_pbs[] = {
@ -128,11 +179,6 @@ static int mlxsw_sp_port_headroom_init(struct mlxsw_sp_port *mlxsw_sp_port)
return mlxsw_sp_port_pb_prio_init(mlxsw_sp_port);
}
struct mlxsw_sp_sb_pr {
enum mlxsw_reg_sbpr_mode mode;
u32 size;
};
#define MLXSW_SP_SB_PR_INGRESS_SIZE \
(15000000 - (2 * 20000 * MLXSW_PORT_MAX_PORTS))
#define MLXSW_SP_SB_PR_EGRESS_SIZE \
@ -199,12 +245,6 @@ static int mlxsw_sp_sb_prs_init(struct mlxsw_sp *mlxsw_sp)
MLXSW_SP_SB_PRS_EGRESS_LEN);
}
struct mlxsw_sp_sb_cm {
u32 min_buff;
u32 max_buff;
u8 pool;
};
#define MLXSW_SP_SB_CM(_min_buff, _max_buff, _pool) \
{ \
.min_buff = _min_buff, \
@ -337,11 +377,6 @@ static int mlxsw_sp_cpu_port_sb_cms_init(struct mlxsw_sp *mlxsw_sp)
MLXSW_SP_CPU_PORT_SB_MCS_LEN);
}
struct mlxsw_sp_sb_pm {
u32 min_buff;
u32 max_buff;
};
#define MLXSW_SP_SB_PM(_min_buff, _max_buff) \
{ \
.min_buff = _min_buff, \