// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
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/* Copyright (c) 2015-2018 Mellanox Technologies. All rights reserved */
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/dcbnl.h>
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#include <linux/if_ether.h>
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#include <linux/list.h>
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#include <linux/netlink.h>
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#include "spectrum.h"
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#include "core.h"
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#include "port.h"
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#include "reg.h"
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struct mlxsw_sp_sb_pr {
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enum mlxsw_reg_sbpr_mode mode;
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u32 size;
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u8 freeze_mode:1,
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freeze_size:1;
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};
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struct mlxsw_cp_sb_occ {
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u32 cur;
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u32 max;
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};
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struct mlxsw_sp_sb_cm {
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u32 min_buff;
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u32 max_buff;
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u16 pool_index;
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struct mlxsw_cp_sb_occ occ;
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u8 freeze_pool:1,
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freeze_thresh:1;
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};
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#define MLXSW_SP_SB_INFI -1U
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#define MLXSW_SP_SB_REST -2U
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struct mlxsw_sp_sb_pm {
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u32 min_buff;
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u32 max_buff;
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struct mlxsw_cp_sb_occ occ;
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};
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struct mlxsw_sp_sb_mm {
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u32 min_buff;
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u32 max_buff;
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u16 pool_index;
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};
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struct mlxsw_sp_sb_pool_des {
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enum mlxsw_reg_sbxx_dir dir;
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u8 pool;
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};
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#define MLXSW_SP_SB_POOL_ING 0
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#define MLXSW_SP_SB_POOL_EGR 4
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#define MLXSW_SP_SB_POOL_EGR_MC 8
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#define MLXSW_SP_SB_POOL_ING_CPU 9
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#define MLXSW_SP_SB_POOL_EGR_CPU 10
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static const struct mlxsw_sp_sb_pool_des mlxsw_sp1_sb_pool_dess[] = {
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{MLXSW_REG_SBXX_DIR_INGRESS, 0},
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{MLXSW_REG_SBXX_DIR_INGRESS, 1},
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{MLXSW_REG_SBXX_DIR_INGRESS, 2},
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{MLXSW_REG_SBXX_DIR_INGRESS, 3},
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{MLXSW_REG_SBXX_DIR_EGRESS, 0},
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{MLXSW_REG_SBXX_DIR_EGRESS, 1},
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{MLXSW_REG_SBXX_DIR_EGRESS, 2},
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{MLXSW_REG_SBXX_DIR_EGRESS, 3},
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{MLXSW_REG_SBXX_DIR_EGRESS, 15},
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{MLXSW_REG_SBXX_DIR_INGRESS, 4},
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{MLXSW_REG_SBXX_DIR_EGRESS, 4},
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};
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static const struct mlxsw_sp_sb_pool_des mlxsw_sp2_sb_pool_dess[] = {
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{MLXSW_REG_SBXX_DIR_INGRESS, 0},
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{MLXSW_REG_SBXX_DIR_INGRESS, 1},
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{MLXSW_REG_SBXX_DIR_INGRESS, 2},
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{MLXSW_REG_SBXX_DIR_INGRESS, 3},
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{MLXSW_REG_SBXX_DIR_EGRESS, 0},
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{MLXSW_REG_SBXX_DIR_EGRESS, 1},
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{MLXSW_REG_SBXX_DIR_EGRESS, 2},
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{MLXSW_REG_SBXX_DIR_EGRESS, 3},
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{MLXSW_REG_SBXX_DIR_EGRESS, 15},
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{MLXSW_REG_SBXX_DIR_INGRESS, 4},
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{MLXSW_REG_SBXX_DIR_EGRESS, 4},
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};
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#define MLXSW_SP_SB_ING_TC_COUNT 8
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#define MLXSW_SP_SB_EG_TC_COUNT 16
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struct mlxsw_sp_sb_port {
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struct mlxsw_sp_sb_cm ing_cms[MLXSW_SP_SB_ING_TC_COUNT];
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struct mlxsw_sp_sb_cm eg_cms[MLXSW_SP_SB_EG_TC_COUNT];
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struct mlxsw_sp_sb_pm *pms;
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};
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struct mlxsw_sp_sb {
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struct mlxsw_sp_sb_pr *prs;
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struct mlxsw_sp_sb_port *ports;
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u32 cell_size;
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u32 max_headroom_cells;
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u64 sb_size;
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};
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struct mlxsw_sp_sb_vals {
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unsigned int pool_count;
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const struct mlxsw_sp_sb_pool_des *pool_dess;
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const struct mlxsw_sp_sb_pm *pms;
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const struct mlxsw_sp_sb_pm *pms_cpu;
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const struct mlxsw_sp_sb_pr *prs;
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const struct mlxsw_sp_sb_mm *mms;
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const struct mlxsw_sp_sb_cm *cms_ingress;
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const struct mlxsw_sp_sb_cm *cms_egress;
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const struct mlxsw_sp_sb_cm *cms_cpu;
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unsigned int mms_count;
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unsigned int cms_ingress_count;
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unsigned int cms_egress_count;
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unsigned int cms_cpu_count;
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};
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struct mlxsw_sp_sb_ops {
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u32 (*int_buf_size_get)(int mtu, u32 speed);
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};
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u32 mlxsw_sp_cells_bytes(const struct mlxsw_sp *mlxsw_sp, u32 cells)
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{
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return mlxsw_sp->sb->cell_size * cells;
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}
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u32 mlxsw_sp_bytes_cells(const struct mlxsw_sp *mlxsw_sp, u32 bytes)
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{
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return DIV_ROUND_UP(bytes, mlxsw_sp->sb->cell_size);
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}
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static u32 mlxsw_sp_port_headroom_8x_adjust(const struct mlxsw_sp_port *mlxsw_sp_port,
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u32 size_cells)
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{
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/* Ports with eight lanes use two headroom buffers between which the
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* configured headroom size is split. Therefore, multiply the calculated
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* headroom size by two.
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*/
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return mlxsw_sp_port->mapping.width == 8 ? 2 * size_cells : size_cells;
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}
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static struct mlxsw_sp_sb_pr *mlxsw_sp_sb_pr_get(struct mlxsw_sp *mlxsw_sp,
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u16 pool_index)
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{
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return &mlxsw_sp->sb->prs[pool_index];
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}
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static bool mlxsw_sp_sb_cm_exists(u8 pg_buff, enum mlxsw_reg_sbxx_dir dir)
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{
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if (dir == MLXSW_REG_SBXX_DIR_INGRESS)
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return pg_buff < MLXSW_SP_SB_ING_TC_COUNT;
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else
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return pg_buff < MLXSW_SP_SB_EG_TC_COUNT;
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}
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static struct mlxsw_sp_sb_cm *mlxsw_sp_sb_cm_get(struct mlxsw_sp *mlxsw_sp,
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u8 local_port, u8 pg_buff,
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enum mlxsw_reg_sbxx_dir dir)
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{
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struct mlxsw_sp_sb_port *sb_port = &mlxsw_sp->sb->ports[local_port];
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WARN_ON(!mlxsw_sp_sb_cm_exists(pg_buff, dir));
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if (dir == MLXSW_REG_SBXX_DIR_INGRESS)
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return &sb_port->ing_cms[pg_buff];
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else
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return &sb_port->eg_cms[pg_buff];
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}
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static struct mlxsw_sp_sb_pm *mlxsw_sp_sb_pm_get(struct mlxsw_sp *mlxsw_sp,
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u8 local_port, u16 pool_index)
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{
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return &mlxsw_sp->sb->ports[local_port].pms[pool_index];
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}
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static int mlxsw_sp_sb_pr_write(struct mlxsw_sp *mlxsw_sp, u16 pool_index,
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enum mlxsw_reg_sbpr_mode mode,
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u32 size, bool infi_size)
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{
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const struct mlxsw_sp_sb_pool_des *des =
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&mlxsw_sp->sb_vals->pool_dess[pool_index];
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char sbpr_pl[MLXSW_REG_SBPR_LEN];
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struct mlxsw_sp_sb_pr *pr;
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int err;
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mlxsw_reg_sbpr_pack(sbpr_pl, des->pool, des->dir, mode,
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size, infi_size);
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err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbpr), sbpr_pl);
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if (err)
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return err;
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if (infi_size)
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size = mlxsw_sp_bytes_cells(mlxsw_sp, mlxsw_sp->sb->sb_size);
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pr = mlxsw_sp_sb_pr_get(mlxsw_sp, pool_index);
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pr->mode = mode;
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pr->size = size;
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return 0;
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}
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static int mlxsw_sp_sb_cm_write(struct mlxsw_sp *mlxsw_sp, u8 local_port,
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u8 pg_buff, u32 min_buff, u32 max_buff,
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bool infi_max, u16 pool_index)
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{
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const struct mlxsw_sp_sb_pool_des *des =
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&mlxsw_sp->sb_vals->pool_dess[pool_index];
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char sbcm_pl[MLXSW_REG_SBCM_LEN];
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struct mlxsw_sp_sb_cm *cm;
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int err;
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mlxsw_reg_sbcm_pack(sbcm_pl, local_port, pg_buff, des->dir,
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min_buff, max_buff, infi_max, des->pool);
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err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbcm), sbcm_pl);
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if (err)
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return err;
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if (mlxsw_sp_sb_cm_exists(pg_buff, des->dir)) {
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if (infi_max)
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max_buff = mlxsw_sp_bytes_cells(mlxsw_sp,
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mlxsw_sp->sb->sb_size);
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cm = mlxsw_sp_sb_cm_get(mlxsw_sp, local_port, pg_buff,
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des->dir);
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cm->min_buff = min_buff;
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cm->max_buff = max_buff;
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cm->pool_index = pool_index;
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}
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return 0;
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}
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static int mlxsw_sp_sb_pm_write(struct mlxsw_sp *mlxsw_sp, u8 local_port,
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u16 pool_index, u32 min_buff, u32 max_buff)
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{
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const struct mlxsw_sp_sb_pool_des *des =
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&mlxsw_sp->sb_vals->pool_dess[pool_index];
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char sbpm_pl[MLXSW_REG_SBPM_LEN];
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struct mlxsw_sp_sb_pm *pm;
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int err;
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mlxsw_reg_sbpm_pack(sbpm_pl, local_port, des->pool, des->dir, false,
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min_buff, max_buff);
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err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbpm), sbpm_pl);
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if (err)
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return err;
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pm = mlxsw_sp_sb_pm_get(mlxsw_sp, local_port, pool_index);
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pm->min_buff = min_buff;
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pm->max_buff = max_buff;
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return 0;
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}
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static int mlxsw_sp_sb_pm_occ_clear(struct mlxsw_sp *mlxsw_sp, u8 local_port,
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u16 pool_index, struct list_head *bulk_list)
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{
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const struct mlxsw_sp_sb_pool_des *des =
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&mlxsw_sp->sb_vals->pool_dess[pool_index];
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char sbpm_pl[MLXSW_REG_SBPM_LEN];
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if (local_port == MLXSW_PORT_CPU_PORT &&
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des->dir == MLXSW_REG_SBXX_DIR_INGRESS)
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return 0;
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mlxsw_reg_sbpm_pack(sbpm_pl, local_port, des->pool, des->dir,
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true, 0, 0);
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return mlxsw_reg_trans_query(mlxsw_sp->core, MLXSW_REG(sbpm), sbpm_pl,
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bulk_list, NULL, 0);
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}
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static void mlxsw_sp_sb_pm_occ_query_cb(struct mlxsw_core *mlxsw_core,
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char *sbpm_pl, size_t sbpm_pl_len,
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unsigned long cb_priv)
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{
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struct mlxsw_sp_sb_pm *pm = (struct mlxsw_sp_sb_pm *) cb_priv;
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mlxsw_reg_sbpm_unpack(sbpm_pl, &pm->occ.cur, &pm->occ.max);
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}
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static int mlxsw_sp_sb_pm_occ_query(struct mlxsw_sp *mlxsw_sp, u8 local_port,
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u16 pool_index, struct list_head *bulk_list)
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{
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const struct mlxsw_sp_sb_pool_des *des =
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&mlxsw_sp->sb_vals->pool_dess[pool_index];
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char sbpm_pl[MLXSW_REG_SBPM_LEN];
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struct mlxsw_sp_sb_pm *pm;
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if (local_port == MLXSW_PORT_CPU_PORT &&
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des->dir == MLXSW_REG_SBXX_DIR_INGRESS)
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return 0;
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pm = mlxsw_sp_sb_pm_get(mlxsw_sp, local_port, pool_index);
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mlxsw_reg_sbpm_pack(sbpm_pl, local_port, des->pool, des->dir,
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false, 0, 0);
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return mlxsw_reg_trans_query(mlxsw_sp->core, MLXSW_REG(sbpm), sbpm_pl,
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bulk_list,
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mlxsw_sp_sb_pm_occ_query_cb,
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(unsigned long) pm);
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}
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void mlxsw_sp_hdroom_prios_reset_buf_idx(struct mlxsw_sp_hdroom *hdroom)
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{
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int prio;
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for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; prio++) {
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switch (hdroom->mode) {
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case MLXSW_SP_HDROOM_MODE_DCB:
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hdroom->prios.prio[prio].buf_idx = hdroom->prios.prio[prio].ets_buf_idx;
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break;
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case MLXSW_SP_HDROOM_MODE_TC:
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hdroom->prios.prio[prio].buf_idx = hdroom->prios.prio[prio].set_buf_idx;
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break;
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}
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}
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}
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void mlxsw_sp_hdroom_bufs_reset_lossiness(struct mlxsw_sp_hdroom *hdroom)
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{
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int prio;
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int i;
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for (i = 0; i < DCBX_MAX_BUFFERS; i++)
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hdroom->bufs.buf[i].lossy = true;
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for (prio = 0; prio < IEEE_8021Q_MAX_PRIORITIES; prio++) {
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if (!hdroom->prios.prio[prio].lossy)
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hdroom->bufs.buf[hdroom->prios.prio[prio].buf_idx].lossy = false;
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}
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}
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static u16 mlxsw_sp_hdroom_buf_threshold_get(const struct mlxsw_sp *mlxsw_sp, int mtu)
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{
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return 2 * mlxsw_sp_bytes_cells(mlxsw_sp, mtu);
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}
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static void mlxsw_sp_hdroom_buf_pack(char *pbmc_pl, int index, u16 size, u16 thres, bool lossy)
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{
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if (lossy)
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mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, index, size);
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else
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mlxsw_reg_pbmc_lossless_buffer_pack(pbmc_pl, index, size,
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thres);
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}
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static u16 mlxsw_sp_hdroom_buf_delay_get(const struct mlxsw_sp *mlxsw_sp,
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const struct mlxsw_sp_hdroom *hdroom)
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{
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u16 delay_cells;
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delay_cells = mlxsw_sp_bytes_cells(mlxsw_sp, hdroom->delay_bytes);
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/* In the worst case scenario the delay will be made up of packets that
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* are all of size CELL_SIZE + 1, which means each packet will require
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* almost twice its true size when buffered in the switch. We therefore
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* multiply this value by the "cell factor", which is close to 2.
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*
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* Another MTU is added in case the transmitting host already started
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* transmitting a maximum length frame when the PFC packet was received.
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*/
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return 2 * delay_cells + mlxsw_sp_bytes_cells(mlxsw_sp, hdroom->mtu);
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}
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static u32 mlxsw_sp_hdroom_int_buf_size_get(struct mlxsw_sp *mlxsw_sp, int mtu, u32 speed)
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{
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u32 buffsize = mlxsw_sp->sb_ops->int_buf_size_get(speed, mtu);
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return mlxsw_sp_bytes_cells(mlxsw_sp, buffsize) + 1;
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}
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static bool mlxsw_sp_hdroom_buf_is_used(const struct mlxsw_sp_hdroom *hdroom, int buf)
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{
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int prio;
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for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; prio++) {
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if (hdroom->prios.prio[prio].buf_idx == buf)
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return true;
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}
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return false;
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}
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void mlxsw_sp_hdroom_bufs_reset_sizes(struct mlxsw_sp_port *mlxsw_sp_port,
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struct mlxsw_sp_hdroom *hdroom)
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{
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struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
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u16 reserve_cells;
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int i;
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/* Internal buffer. */
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reserve_cells = mlxsw_sp_hdroom_int_buf_size_get(mlxsw_sp, mlxsw_sp_port->max_speed,
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mlxsw_sp_port->max_mtu);
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reserve_cells = mlxsw_sp_port_headroom_8x_adjust(mlxsw_sp_port, reserve_cells);
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hdroom->int_buf.reserve_cells = reserve_cells;
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if (hdroom->int_buf.enable)
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hdroom->int_buf.size_cells = reserve_cells;
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else
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hdroom->int_buf.size_cells = 0;
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/* PG buffers. */
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for (i = 0; i < DCBX_MAX_BUFFERS; i++) {
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struct mlxsw_sp_hdroom_buf *buf = &hdroom->bufs.buf[i];
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u16 thres_cells;
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u16 delay_cells;
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if (!mlxsw_sp_hdroom_buf_is_used(hdroom, i)) {
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thres_cells = 0;
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delay_cells = 0;
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} else if (buf->lossy) {
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thres_cells = mlxsw_sp_hdroom_buf_threshold_get(mlxsw_sp, hdroom->mtu);
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delay_cells = 0;
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} else {
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thres_cells = mlxsw_sp_hdroom_buf_threshold_get(mlxsw_sp, hdroom->mtu);
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delay_cells = mlxsw_sp_hdroom_buf_delay_get(mlxsw_sp, hdroom);
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}
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thres_cells = mlxsw_sp_port_headroom_8x_adjust(mlxsw_sp_port, thres_cells);
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delay_cells = mlxsw_sp_port_headroom_8x_adjust(mlxsw_sp_port, delay_cells);
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buf->thres_cells = thres_cells;
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if (hdroom->mode == MLXSW_SP_HDROOM_MODE_DCB) {
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buf->size_cells = thres_cells + delay_cells;
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} else {
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/* Do not allow going below the minimum size, even if
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* the user requested it.
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*/
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buf->size_cells = max(buf->set_size_cells, buf->thres_cells);
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}
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}
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}
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#define MLXSW_SP_PB_UNUSED 8
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static int mlxsw_sp_hdroom_configure_buffers(struct mlxsw_sp_port *mlxsw_sp_port,
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const struct mlxsw_sp_hdroom *hdroom, bool force)
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{
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struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
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char pbmc_pl[MLXSW_REG_PBMC_LEN];
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bool dirty;
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int err;
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int i;
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dirty = memcmp(&mlxsw_sp_port->hdroom->bufs, &hdroom->bufs, sizeof(hdroom->bufs));
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if (!dirty && !force)
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return 0;
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mlxsw_reg_pbmc_pack(pbmc_pl, mlxsw_sp_port->local_port, 0xffff, 0xffff / 2);
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for (i = 0; i < MLXSW_SP_PB_COUNT; i++) {
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const struct mlxsw_sp_hdroom_buf *buf = &hdroom->bufs.buf[i];
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if (i == MLXSW_SP_PB_UNUSED)
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continue;
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mlxsw_sp_hdroom_buf_pack(pbmc_pl, i, buf->size_cells, buf->thres_cells, buf->lossy);
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}
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mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, MLXSW_REG_PBMC_PORT_SHARED_BUF_IDX, 0);
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err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);
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if (err)
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return err;
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mlxsw_sp_port->hdroom->bufs = hdroom->bufs;
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return 0;
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}
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static int mlxsw_sp_hdroom_configure_priomap(struct mlxsw_sp_port *mlxsw_sp_port,
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const struct mlxsw_sp_hdroom *hdroom, bool force)
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{
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char pptb_pl[MLXSW_REG_PPTB_LEN];
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bool dirty;
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int prio;
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int err;
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dirty = memcmp(&mlxsw_sp_port->hdroom->prios, &hdroom->prios, sizeof(hdroom->prios));
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if (!dirty && !force)
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return 0;
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mlxsw_reg_pptb_pack(pptb_pl, mlxsw_sp_port->local_port);
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for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; prio++)
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mlxsw_reg_pptb_prio_to_buff_pack(pptb_pl, prio, hdroom->prios.prio[prio].buf_idx);
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err = mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(pptb), pptb_pl);
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if (err)
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return err;
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mlxsw_sp_port->hdroom->prios = hdroom->prios;
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return 0;
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}
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static int mlxsw_sp_hdroom_configure_int_buf(struct mlxsw_sp_port *mlxsw_sp_port,
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const struct mlxsw_sp_hdroom *hdroom, bool force)
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{
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char sbib_pl[MLXSW_REG_SBIB_LEN];
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bool dirty;
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int err;
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dirty = memcmp(&mlxsw_sp_port->hdroom->int_buf, &hdroom->int_buf, sizeof(hdroom->int_buf));
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if (!dirty && !force)
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return 0;
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mlxsw_reg_sbib_pack(sbib_pl, mlxsw_sp_port->local_port, hdroom->int_buf.size_cells);
|
err = mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(sbib), sbib_pl);
|
if (err)
|
return err;
|
|
mlxsw_sp_port->hdroom->int_buf = hdroom->int_buf;
|
return 0;
|
}
|
|
static bool mlxsw_sp_hdroom_bufs_fit(struct mlxsw_sp *mlxsw_sp,
|
const struct mlxsw_sp_hdroom *hdroom)
|
{
|
u32 taken_headroom_cells = 0;
|
int i;
|
|
for (i = 0; i < MLXSW_SP_PB_COUNT; i++)
|
taken_headroom_cells += hdroom->bufs.buf[i].size_cells;
|
|
taken_headroom_cells += hdroom->int_buf.reserve_cells;
|
return taken_headroom_cells <= mlxsw_sp->sb->max_headroom_cells;
|
}
|
|
static int __mlxsw_sp_hdroom_configure(struct mlxsw_sp_port *mlxsw_sp_port,
|
const struct mlxsw_sp_hdroom *hdroom, bool force)
|
{
|
struct mlxsw_sp_hdroom orig_hdroom;
|
struct mlxsw_sp_hdroom tmp_hdroom;
|
int err;
|
int i;
|
|
/* Port buffers need to be configured in three steps. First, all buffers
|
* with non-zero size are configured. Then, prio-to-buffer map is
|
* updated, allowing traffic to flow to the now non-zero buffers.
|
* Finally, zero-sized buffers are configured, because now no traffic
|
* should be directed to them anymore. This way, in a non-congested
|
* system, no packet drops are introduced by the reconfiguration.
|
*/
|
|
orig_hdroom = *mlxsw_sp_port->hdroom;
|
tmp_hdroom = orig_hdroom;
|
for (i = 0; i < MLXSW_SP_PB_COUNT; i++) {
|
if (hdroom->bufs.buf[i].size_cells)
|
tmp_hdroom.bufs.buf[i] = hdroom->bufs.buf[i];
|
}
|
|
if (!mlxsw_sp_hdroom_bufs_fit(mlxsw_sp_port->mlxsw_sp, &tmp_hdroom) ||
|
!mlxsw_sp_hdroom_bufs_fit(mlxsw_sp_port->mlxsw_sp, hdroom))
|
return -ENOBUFS;
|
|
err = mlxsw_sp_hdroom_configure_buffers(mlxsw_sp_port, &tmp_hdroom, force);
|
if (err)
|
return err;
|
|
err = mlxsw_sp_hdroom_configure_priomap(mlxsw_sp_port, hdroom, force);
|
if (err)
|
goto err_configure_priomap;
|
|
err = mlxsw_sp_hdroom_configure_buffers(mlxsw_sp_port, hdroom, false);
|
if (err)
|
goto err_configure_buffers;
|
|
err = mlxsw_sp_hdroom_configure_int_buf(mlxsw_sp_port, hdroom, false);
|
if (err)
|
goto err_configure_int_buf;
|
|
*mlxsw_sp_port->hdroom = *hdroom;
|
return 0;
|
|
err_configure_int_buf:
|
mlxsw_sp_hdroom_configure_buffers(mlxsw_sp_port, &tmp_hdroom, false);
|
err_configure_buffers:
|
mlxsw_sp_hdroom_configure_priomap(mlxsw_sp_port, &tmp_hdroom, false);
|
err_configure_priomap:
|
mlxsw_sp_hdroom_configure_buffers(mlxsw_sp_port, &orig_hdroom, false);
|
return err;
|
}
|
|
int mlxsw_sp_hdroom_configure(struct mlxsw_sp_port *mlxsw_sp_port,
|
const struct mlxsw_sp_hdroom *hdroom)
|
{
|
return __mlxsw_sp_hdroom_configure(mlxsw_sp_port, hdroom, false);
|
}
|
|
static int mlxsw_sp_port_headroom_init(struct mlxsw_sp_port *mlxsw_sp_port)
|
{
|
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
|
struct mlxsw_sp_hdroom hdroom = {};
|
u32 size9;
|
int prio;
|
|
hdroom.mtu = mlxsw_sp_port->dev->mtu;
|
hdroom.mode = MLXSW_SP_HDROOM_MODE_DCB;
|
for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; prio++)
|
hdroom.prios.prio[prio].lossy = true;
|
|
mlxsw_sp_hdroom_bufs_reset_lossiness(&hdroom);
|
mlxsw_sp_hdroom_bufs_reset_sizes(mlxsw_sp_port, &hdroom);
|
|
/* Buffer 9 is used for control traffic. */
|
size9 = mlxsw_sp_port_headroom_8x_adjust(mlxsw_sp_port, mlxsw_sp_port->max_mtu);
|
hdroom.bufs.buf[9].size_cells = mlxsw_sp_bytes_cells(mlxsw_sp, size9);
|
|
return __mlxsw_sp_hdroom_configure(mlxsw_sp_port, &hdroom, true);
|
}
|
|
static int mlxsw_sp_sb_port_init(struct mlxsw_sp *mlxsw_sp,
|
struct mlxsw_sp_sb_port *sb_port)
|
{
|
struct mlxsw_sp_sb_pm *pms;
|
|
pms = kcalloc(mlxsw_sp->sb_vals->pool_count, sizeof(*pms),
|
GFP_KERNEL);
|
if (!pms)
|
return -ENOMEM;
|
sb_port->pms = pms;
|
return 0;
|
}
|
|
static void mlxsw_sp_sb_port_fini(struct mlxsw_sp_sb_port *sb_port)
|
{
|
kfree(sb_port->pms);
|
}
|
|
static int mlxsw_sp_sb_ports_init(struct mlxsw_sp *mlxsw_sp)
|
{
|
unsigned int max_ports = mlxsw_core_max_ports(mlxsw_sp->core);
|
struct mlxsw_sp_sb_pr *prs;
|
int i;
|
int err;
|
|
mlxsw_sp->sb->ports = kcalloc(max_ports,
|
sizeof(struct mlxsw_sp_sb_port),
|
GFP_KERNEL);
|
if (!mlxsw_sp->sb->ports)
|
return -ENOMEM;
|
|
prs = kcalloc(mlxsw_sp->sb_vals->pool_count, sizeof(*prs),
|
GFP_KERNEL);
|
if (!prs) {
|
err = -ENOMEM;
|
goto err_alloc_prs;
|
}
|
mlxsw_sp->sb->prs = prs;
|
|
for (i = 0; i < max_ports; i++) {
|
err = mlxsw_sp_sb_port_init(mlxsw_sp, &mlxsw_sp->sb->ports[i]);
|
if (err)
|
goto err_sb_port_init;
|
}
|
|
return 0;
|
|
err_sb_port_init:
|
for (i--; i >= 0; i--)
|
mlxsw_sp_sb_port_fini(&mlxsw_sp->sb->ports[i]);
|
kfree(mlxsw_sp->sb->prs);
|
err_alloc_prs:
|
kfree(mlxsw_sp->sb->ports);
|
return err;
|
}
|
|
static void mlxsw_sp_sb_ports_fini(struct mlxsw_sp *mlxsw_sp)
|
{
|
int max_ports = mlxsw_core_max_ports(mlxsw_sp->core);
|
int i;
|
|
for (i = max_ports - 1; i >= 0; i--)
|
mlxsw_sp_sb_port_fini(&mlxsw_sp->sb->ports[i]);
|
kfree(mlxsw_sp->sb->prs);
|
kfree(mlxsw_sp->sb->ports);
|
}
|
|
#define MLXSW_SP_SB_PR(_mode, _size) \
|
{ \
|
.mode = _mode, \
|
.size = _size, \
|
}
|
|
#define MLXSW_SP_SB_PR_EXT(_mode, _size, _freeze_mode, _freeze_size) \
|
{ \
|
.mode = _mode, \
|
.size = _size, \
|
.freeze_mode = _freeze_mode, \
|
.freeze_size = _freeze_size, \
|
}
|
|
#define MLXSW_SP1_SB_PR_CPU_SIZE (256 * 1000)
|
|
/* Order according to mlxsw_sp1_sb_pool_dess */
|
static const struct mlxsw_sp_sb_pr mlxsw_sp1_sb_prs[] = {
|
MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC, MLXSW_SP_SB_REST),
|
MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC, 0),
|
MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC, 0),
|
MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC, 0),
|
MLXSW_SP_SB_PR_EXT(MLXSW_REG_SBPR_MODE_DYNAMIC, MLXSW_SP_SB_REST,
|
true, false),
|
MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC, 0),
|
MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC, 0),
|
MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC, 0),
|
MLXSW_SP_SB_PR_EXT(MLXSW_REG_SBPR_MODE_STATIC, MLXSW_SP_SB_INFI,
|
true, true),
|
MLXSW_SP_SB_PR_EXT(MLXSW_REG_SBPR_MODE_DYNAMIC,
|
MLXSW_SP1_SB_PR_CPU_SIZE, true, false),
|
MLXSW_SP_SB_PR_EXT(MLXSW_REG_SBPR_MODE_DYNAMIC,
|
MLXSW_SP1_SB_PR_CPU_SIZE, true, false),
|
};
|
|
#define MLXSW_SP2_SB_PR_CPU_SIZE (256 * 1000)
|
|
/* Order according to mlxsw_sp2_sb_pool_dess */
|
static const struct mlxsw_sp_sb_pr mlxsw_sp2_sb_prs[] = {
|
MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_DYNAMIC, MLXSW_SP_SB_REST),
|
MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_STATIC, 0),
|
MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_STATIC, 0),
|
MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_STATIC, 0),
|
MLXSW_SP_SB_PR_EXT(MLXSW_REG_SBPR_MODE_DYNAMIC, MLXSW_SP_SB_REST,
|
true, false),
|
MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_STATIC, 0),
|
MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_STATIC, 0),
|
MLXSW_SP_SB_PR(MLXSW_REG_SBPR_MODE_STATIC, 0),
|
MLXSW_SP_SB_PR_EXT(MLXSW_REG_SBPR_MODE_STATIC, MLXSW_SP_SB_INFI,
|
true, true),
|
MLXSW_SP_SB_PR_EXT(MLXSW_REG_SBPR_MODE_DYNAMIC,
|
MLXSW_SP2_SB_PR_CPU_SIZE, true, false),
|
MLXSW_SP_SB_PR_EXT(MLXSW_REG_SBPR_MODE_DYNAMIC,
|
MLXSW_SP2_SB_PR_CPU_SIZE, true, false),
|
};
|
|
static int mlxsw_sp_sb_prs_init(struct mlxsw_sp *mlxsw_sp,
|
const struct mlxsw_sp_sb_pr *prs,
|
const struct mlxsw_sp_sb_pool_des *pool_dess,
|
size_t prs_len)
|
{
|
/* Round down, unlike mlxsw_sp_bytes_cells(). */
|
u32 sb_cells = div_u64(mlxsw_sp->sb->sb_size, mlxsw_sp->sb->cell_size);
|
u32 rest_cells[2] = {sb_cells, sb_cells};
|
int i;
|
int err;
|
|
/* Calculate how much space to give to the "REST" pools in either
|
* direction.
|
*/
|
for (i = 0; i < prs_len; i++) {
|
enum mlxsw_reg_sbxx_dir dir = pool_dess[i].dir;
|
u32 size = prs[i].size;
|
u32 size_cells;
|
|
if (size == MLXSW_SP_SB_INFI || size == MLXSW_SP_SB_REST)
|
continue;
|
|
size_cells = mlxsw_sp_bytes_cells(mlxsw_sp, size);
|
if (WARN_ON_ONCE(size_cells > rest_cells[dir]))
|
continue;
|
|
rest_cells[dir] -= size_cells;
|
}
|
|
for (i = 0; i < prs_len; i++) {
|
u32 size = prs[i].size;
|
u32 size_cells;
|
|
if (size == MLXSW_SP_SB_INFI) {
|
err = mlxsw_sp_sb_pr_write(mlxsw_sp, i, prs[i].mode,
|
0, true);
|
} else if (size == MLXSW_SP_SB_REST) {
|
size_cells = rest_cells[pool_dess[i].dir];
|
err = mlxsw_sp_sb_pr_write(mlxsw_sp, i, prs[i].mode,
|
size_cells, false);
|
} else {
|
size_cells = mlxsw_sp_bytes_cells(mlxsw_sp, size);
|
err = mlxsw_sp_sb_pr_write(mlxsw_sp, i, prs[i].mode,
|
size_cells, false);
|
}
|
if (err)
|
return err;
|
}
|
return 0;
|
}
|
|
#define MLXSW_SP_SB_CM(_min_buff, _max_buff, _pool) \
|
{ \
|
.min_buff = _min_buff, \
|
.max_buff = _max_buff, \
|
.pool_index = _pool, \
|
}
|
|
#define MLXSW_SP_SB_CM_ING(_min_buff, _max_buff) \
|
{ \
|
.min_buff = _min_buff, \
|
.max_buff = _max_buff, \
|
.pool_index = MLXSW_SP_SB_POOL_ING, \
|
}
|
|
#define MLXSW_SP_SB_CM_EGR(_min_buff, _max_buff) \
|
{ \
|
.min_buff = _min_buff, \
|
.max_buff = _max_buff, \
|
.pool_index = MLXSW_SP_SB_POOL_EGR, \
|
}
|
|
#define MLXSW_SP_SB_CM_EGR_MC(_min_buff, _max_buff) \
|
{ \
|
.min_buff = _min_buff, \
|
.max_buff = _max_buff, \
|
.pool_index = MLXSW_SP_SB_POOL_EGR_MC, \
|
.freeze_pool = true, \
|
.freeze_thresh = true, \
|
}
|
|
static const struct mlxsw_sp_sb_cm mlxsw_sp1_sb_cms_ingress[] = {
|
MLXSW_SP_SB_CM_ING(10000, 8),
|
MLXSW_SP_SB_CM_ING(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_CM_ING(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_CM_ING(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_CM_ING(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_CM_ING(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_CM_ING(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_CM_ING(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_CM_ING(0, 0), /* dummy, this PG does not exist */
|
MLXSW_SP_SB_CM(10000, 8, MLXSW_SP_SB_POOL_ING_CPU),
|
};
|
|
static const struct mlxsw_sp_sb_cm mlxsw_sp2_sb_cms_ingress[] = {
|
MLXSW_SP_SB_CM_ING(0, 7),
|
MLXSW_SP_SB_CM_ING(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_CM_ING(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_CM_ING(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_CM_ING(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_CM_ING(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_CM_ING(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_CM_ING(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_CM_ING(0, 0), /* dummy, this PG does not exist */
|
MLXSW_SP_SB_CM(10000, 8, MLXSW_SP_SB_POOL_ING_CPU),
|
};
|
|
static const struct mlxsw_sp_sb_cm mlxsw_sp1_sb_cms_egress[] = {
|
MLXSW_SP_SB_CM_EGR(1500, 9),
|
MLXSW_SP_SB_CM_EGR(1500, 9),
|
MLXSW_SP_SB_CM_EGR(1500, 9),
|
MLXSW_SP_SB_CM_EGR(1500, 9),
|
MLXSW_SP_SB_CM_EGR(1500, 9),
|
MLXSW_SP_SB_CM_EGR(1500, 9),
|
MLXSW_SP_SB_CM_EGR(1500, 9),
|
MLXSW_SP_SB_CM_EGR(1500, 9),
|
MLXSW_SP_SB_CM_EGR_MC(0, MLXSW_SP_SB_INFI),
|
MLXSW_SP_SB_CM_EGR_MC(0, MLXSW_SP_SB_INFI),
|
MLXSW_SP_SB_CM_EGR_MC(0, MLXSW_SP_SB_INFI),
|
MLXSW_SP_SB_CM_EGR_MC(0, MLXSW_SP_SB_INFI),
|
MLXSW_SP_SB_CM_EGR_MC(0, MLXSW_SP_SB_INFI),
|
MLXSW_SP_SB_CM_EGR_MC(0, MLXSW_SP_SB_INFI),
|
MLXSW_SP_SB_CM_EGR_MC(0, MLXSW_SP_SB_INFI),
|
MLXSW_SP_SB_CM_EGR_MC(0, MLXSW_SP_SB_INFI),
|
MLXSW_SP_SB_CM_EGR(1, 0xff),
|
};
|
|
static const struct mlxsw_sp_sb_cm mlxsw_sp2_sb_cms_egress[] = {
|
MLXSW_SP_SB_CM_EGR(0, 7),
|
MLXSW_SP_SB_CM_EGR(0, 7),
|
MLXSW_SP_SB_CM_EGR(0, 7),
|
MLXSW_SP_SB_CM_EGR(0, 7),
|
MLXSW_SP_SB_CM_EGR(0, 7),
|
MLXSW_SP_SB_CM_EGR(0, 7),
|
MLXSW_SP_SB_CM_EGR(0, 7),
|
MLXSW_SP_SB_CM_EGR(0, 7),
|
MLXSW_SP_SB_CM_EGR_MC(0, MLXSW_SP_SB_INFI),
|
MLXSW_SP_SB_CM_EGR_MC(0, MLXSW_SP_SB_INFI),
|
MLXSW_SP_SB_CM_EGR_MC(0, MLXSW_SP_SB_INFI),
|
MLXSW_SP_SB_CM_EGR_MC(0, MLXSW_SP_SB_INFI),
|
MLXSW_SP_SB_CM_EGR_MC(0, MLXSW_SP_SB_INFI),
|
MLXSW_SP_SB_CM_EGR_MC(0, MLXSW_SP_SB_INFI),
|
MLXSW_SP_SB_CM_EGR_MC(0, MLXSW_SP_SB_INFI),
|
MLXSW_SP_SB_CM_EGR_MC(0, MLXSW_SP_SB_INFI),
|
MLXSW_SP_SB_CM_EGR(1, 0xff),
|
};
|
|
#define MLXSW_SP_CPU_PORT_SB_CM MLXSW_SP_SB_CM(0, 0, MLXSW_SP_SB_POOL_EGR_CPU)
|
|
static const struct mlxsw_sp_sb_cm mlxsw_sp_cpu_port_sb_cms[] = {
|
MLXSW_SP_SB_CM(1000, 8, MLXSW_SP_SB_POOL_EGR_CPU),
|
MLXSW_SP_SB_CM(1000, 8, MLXSW_SP_SB_POOL_EGR_CPU),
|
MLXSW_SP_SB_CM(1000, 8, MLXSW_SP_SB_POOL_EGR_CPU),
|
MLXSW_SP_SB_CM(1000, 8, MLXSW_SP_SB_POOL_EGR_CPU),
|
MLXSW_SP_SB_CM(1000, 8, MLXSW_SP_SB_POOL_EGR_CPU),
|
MLXSW_SP_SB_CM(1000, 8, MLXSW_SP_SB_POOL_EGR_CPU),
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_SB_CM(1000, 8, MLXSW_SP_SB_POOL_EGR_CPU),
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
MLXSW_SP_CPU_PORT_SB_CM,
|
};
|
|
static bool
|
mlxsw_sp_sb_pool_is_static(struct mlxsw_sp *mlxsw_sp, u16 pool_index)
|
{
|
struct mlxsw_sp_sb_pr *pr = mlxsw_sp_sb_pr_get(mlxsw_sp, pool_index);
|
|
return pr->mode == MLXSW_REG_SBPR_MODE_STATIC;
|
}
|
|
static int __mlxsw_sp_sb_cms_init(struct mlxsw_sp *mlxsw_sp, u8 local_port,
|
enum mlxsw_reg_sbxx_dir dir,
|
const struct mlxsw_sp_sb_cm *cms,
|
size_t cms_len)
|
{
|
const struct mlxsw_sp_sb_vals *sb_vals = mlxsw_sp->sb_vals;
|
int i;
|
int err;
|
|
for (i = 0; i < cms_len; i++) {
|
const struct mlxsw_sp_sb_cm *cm;
|
u32 min_buff;
|
u32 max_buff;
|
|
if (i == 8 && dir == MLXSW_REG_SBXX_DIR_INGRESS)
|
continue; /* PG number 8 does not exist, skip it */
|
cm = &cms[i];
|
if (WARN_ON(sb_vals->pool_dess[cm->pool_index].dir != dir))
|
continue;
|
|
min_buff = mlxsw_sp_bytes_cells(mlxsw_sp, cm->min_buff);
|
max_buff = cm->max_buff;
|
if (max_buff == MLXSW_SP_SB_INFI) {
|
err = mlxsw_sp_sb_cm_write(mlxsw_sp, local_port, i,
|
min_buff, 0,
|
true, cm->pool_index);
|
} else {
|
if (mlxsw_sp_sb_pool_is_static(mlxsw_sp,
|
cm->pool_index))
|
max_buff = mlxsw_sp_bytes_cells(mlxsw_sp,
|
max_buff);
|
err = mlxsw_sp_sb_cm_write(mlxsw_sp, local_port, i,
|
min_buff, max_buff,
|
false, cm->pool_index);
|
}
|
if (err)
|
return err;
|
}
|
return 0;
|
}
|
|
static int mlxsw_sp_port_sb_cms_init(struct mlxsw_sp_port *mlxsw_sp_port)
|
{
|
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
|
int err;
|
|
err = __mlxsw_sp_sb_cms_init(mlxsw_sp,
|
mlxsw_sp_port->local_port,
|
MLXSW_REG_SBXX_DIR_INGRESS,
|
mlxsw_sp->sb_vals->cms_ingress,
|
mlxsw_sp->sb_vals->cms_ingress_count);
|
if (err)
|
return err;
|
return __mlxsw_sp_sb_cms_init(mlxsw_sp_port->mlxsw_sp,
|
mlxsw_sp_port->local_port,
|
MLXSW_REG_SBXX_DIR_EGRESS,
|
mlxsw_sp->sb_vals->cms_egress,
|
mlxsw_sp->sb_vals->cms_egress_count);
|
}
|
|
static int mlxsw_sp_cpu_port_sb_cms_init(struct mlxsw_sp *mlxsw_sp)
|
{
|
return __mlxsw_sp_sb_cms_init(mlxsw_sp, 0, MLXSW_REG_SBXX_DIR_EGRESS,
|
mlxsw_sp->sb_vals->cms_cpu,
|
mlxsw_sp->sb_vals->cms_cpu_count);
|
}
|
|
#define MLXSW_SP_SB_PM(_min_buff, _max_buff) \
|
{ \
|
.min_buff = _min_buff, \
|
.max_buff = _max_buff, \
|
}
|
|
/* Order according to mlxsw_sp1_sb_pool_dess */
|
static const struct mlxsw_sp_sb_pm mlxsw_sp1_sb_pms[] = {
|
MLXSW_SP_SB_PM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MAX),
|
MLXSW_SP_SB_PM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_PM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_PM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_PM(0, 7),
|
MLXSW_SP_SB_PM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_PM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_PM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
MLXSW_SP_SB_PM(10000, 90000),
|
MLXSW_SP_SB_PM(0, 8), /* 50% occupancy */
|
MLXSW_SP_SB_PM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
};
|
|
/* Order according to mlxsw_sp2_sb_pool_dess */
|
static const struct mlxsw_sp_sb_pm mlxsw_sp2_sb_pms[] = {
|
MLXSW_SP_SB_PM(0, 7),
|
MLXSW_SP_SB_PM(0, 0),
|
MLXSW_SP_SB_PM(0, 0),
|
MLXSW_SP_SB_PM(0, 0),
|
MLXSW_SP_SB_PM(0, 7),
|
MLXSW_SP_SB_PM(0, 0),
|
MLXSW_SP_SB_PM(0, 0),
|
MLXSW_SP_SB_PM(0, 0),
|
MLXSW_SP_SB_PM(10000, 90000),
|
MLXSW_SP_SB_PM(0, 8), /* 50% occupancy */
|
MLXSW_SP_SB_PM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN),
|
};
|
|
/* Order according to mlxsw_sp*_sb_pool_dess */
|
static const struct mlxsw_sp_sb_pm mlxsw_sp_cpu_port_sb_pms[] = {
|
MLXSW_SP_SB_PM(0, 0),
|
MLXSW_SP_SB_PM(0, 0),
|
MLXSW_SP_SB_PM(0, 0),
|
MLXSW_SP_SB_PM(0, 0),
|
MLXSW_SP_SB_PM(0, 0),
|
MLXSW_SP_SB_PM(0, 0),
|
MLXSW_SP_SB_PM(0, 0),
|
MLXSW_SP_SB_PM(0, 0),
|
MLXSW_SP_SB_PM(0, 90000),
|
MLXSW_SP_SB_PM(0, 0),
|
MLXSW_SP_SB_PM(0, MLXSW_REG_SBXX_DYN_MAX_BUFF_MAX),
|
};
|
|
static int mlxsw_sp_sb_pms_init(struct mlxsw_sp *mlxsw_sp, u8 local_port,
|
const struct mlxsw_sp_sb_pm *pms,
|
bool skip_ingress)
|
{
|
int i, err;
|
|
for (i = 0; i < mlxsw_sp->sb_vals->pool_count; i++) {
|
const struct mlxsw_sp_sb_pm *pm = &pms[i];
|
const struct mlxsw_sp_sb_pool_des *des;
|
u32 max_buff;
|
u32 min_buff;
|
|
des = &mlxsw_sp->sb_vals->pool_dess[i];
|
if (skip_ingress && des->dir == MLXSW_REG_SBXX_DIR_INGRESS)
|
continue;
|
|
min_buff = mlxsw_sp_bytes_cells(mlxsw_sp, pm->min_buff);
|
max_buff = pm->max_buff;
|
if (mlxsw_sp_sb_pool_is_static(mlxsw_sp, i))
|
max_buff = mlxsw_sp_bytes_cells(mlxsw_sp, max_buff);
|
err = mlxsw_sp_sb_pm_write(mlxsw_sp, local_port, i, min_buff,
|
max_buff);
|
if (err)
|
return err;
|
}
|
return 0;
|
}
|
|
static int mlxsw_sp_port_sb_pms_init(struct mlxsw_sp_port *mlxsw_sp_port)
|
{
|
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
|
|
return mlxsw_sp_sb_pms_init(mlxsw_sp, mlxsw_sp_port->local_port,
|
mlxsw_sp->sb_vals->pms, false);
|
}
|
|
static int mlxsw_sp_cpu_port_sb_pms_init(struct mlxsw_sp *mlxsw_sp)
|
{
|
return mlxsw_sp_sb_pms_init(mlxsw_sp, 0, mlxsw_sp->sb_vals->pms_cpu,
|
true);
|
}
|
|
#define MLXSW_SP_SB_MM(_min_buff, _max_buff) \
|
{ \
|
.min_buff = _min_buff, \
|
.max_buff = _max_buff, \
|
.pool_index = MLXSW_SP_SB_POOL_EGR, \
|
}
|
|
static const struct mlxsw_sp_sb_mm mlxsw_sp_sb_mms[] = {
|
MLXSW_SP_SB_MM(0, 6),
|
MLXSW_SP_SB_MM(0, 6),
|
MLXSW_SP_SB_MM(0, 6),
|
MLXSW_SP_SB_MM(0, 6),
|
MLXSW_SP_SB_MM(0, 6),
|
MLXSW_SP_SB_MM(0, 6),
|
MLXSW_SP_SB_MM(0, 6),
|
MLXSW_SP_SB_MM(0, 6),
|
MLXSW_SP_SB_MM(0, 6),
|
MLXSW_SP_SB_MM(0, 6),
|
MLXSW_SP_SB_MM(0, 6),
|
MLXSW_SP_SB_MM(0, 6),
|
MLXSW_SP_SB_MM(0, 6),
|
MLXSW_SP_SB_MM(0, 6),
|
MLXSW_SP_SB_MM(0, 6),
|
};
|
|
static int mlxsw_sp_sb_mms_init(struct mlxsw_sp *mlxsw_sp)
|
{
|
char sbmm_pl[MLXSW_REG_SBMM_LEN];
|
int i;
|
int err;
|
|
for (i = 0; i < mlxsw_sp->sb_vals->mms_count; i++) {
|
const struct mlxsw_sp_sb_pool_des *des;
|
const struct mlxsw_sp_sb_mm *mc;
|
u32 min_buff;
|
|
mc = &mlxsw_sp->sb_vals->mms[i];
|
des = &mlxsw_sp->sb_vals->pool_dess[mc->pool_index];
|
/* All pools used by sb_mm's are initialized using dynamic
|
* thresholds, therefore 'max_buff' isn't specified in cells.
|
*/
|
min_buff = mlxsw_sp_bytes_cells(mlxsw_sp, mc->min_buff);
|
mlxsw_reg_sbmm_pack(sbmm_pl, i, min_buff, mc->max_buff,
|
des->pool);
|
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbmm), sbmm_pl);
|
if (err)
|
return err;
|
}
|
return 0;
|
}
|
|
static void mlxsw_sp_pool_count(struct mlxsw_sp *mlxsw_sp,
|
u16 *p_ingress_len, u16 *p_egress_len)
|
{
|
int i;
|
|
for (i = 0; i < mlxsw_sp->sb_vals->pool_count; ++i) {
|
if (mlxsw_sp->sb_vals->pool_dess[i].dir ==
|
MLXSW_REG_SBXX_DIR_INGRESS)
|
(*p_ingress_len)++;
|
else
|
(*p_egress_len)++;
|
}
|
|
WARN(*p_egress_len == 0, "No egress pools\n");
|
}
|
|
const struct mlxsw_sp_sb_vals mlxsw_sp1_sb_vals = {
|
.pool_count = ARRAY_SIZE(mlxsw_sp1_sb_pool_dess),
|
.pool_dess = mlxsw_sp1_sb_pool_dess,
|
.pms = mlxsw_sp1_sb_pms,
|
.pms_cpu = mlxsw_sp_cpu_port_sb_pms,
|
.prs = mlxsw_sp1_sb_prs,
|
.mms = mlxsw_sp_sb_mms,
|
.cms_ingress = mlxsw_sp1_sb_cms_ingress,
|
.cms_egress = mlxsw_sp1_sb_cms_egress,
|
.cms_cpu = mlxsw_sp_cpu_port_sb_cms,
|
.mms_count = ARRAY_SIZE(mlxsw_sp_sb_mms),
|
.cms_ingress_count = ARRAY_SIZE(mlxsw_sp1_sb_cms_ingress),
|
.cms_egress_count = ARRAY_SIZE(mlxsw_sp1_sb_cms_egress),
|
.cms_cpu_count = ARRAY_SIZE(mlxsw_sp_cpu_port_sb_cms),
|
};
|
|
const struct mlxsw_sp_sb_vals mlxsw_sp2_sb_vals = {
|
.pool_count = ARRAY_SIZE(mlxsw_sp2_sb_pool_dess),
|
.pool_dess = mlxsw_sp2_sb_pool_dess,
|
.pms = mlxsw_sp2_sb_pms,
|
.pms_cpu = mlxsw_sp_cpu_port_sb_pms,
|
.prs = mlxsw_sp2_sb_prs,
|
.mms = mlxsw_sp_sb_mms,
|
.cms_ingress = mlxsw_sp2_sb_cms_ingress,
|
.cms_egress = mlxsw_sp2_sb_cms_egress,
|
.cms_cpu = mlxsw_sp_cpu_port_sb_cms,
|
.mms_count = ARRAY_SIZE(mlxsw_sp_sb_mms),
|
.cms_ingress_count = ARRAY_SIZE(mlxsw_sp2_sb_cms_ingress),
|
.cms_egress_count = ARRAY_SIZE(mlxsw_sp2_sb_cms_egress),
|
.cms_cpu_count = ARRAY_SIZE(mlxsw_sp_cpu_port_sb_cms),
|
};
|
|
static u32 mlxsw_sp1_pb_int_buf_size_get(int mtu, u32 speed)
|
{
|
return mtu * 5 / 2;
|
}
|
|
static u32 __mlxsw_sp_pb_int_buf_size_get(int mtu, u32 speed, u32 buffer_factor)
|
{
|
return 3 * mtu + buffer_factor * speed / 1000;
|
}
|
|
#define MLXSW_SP2_SPAN_EG_MIRROR_BUFFER_FACTOR 38
|
|
static u32 mlxsw_sp2_pb_int_buf_size_get(int mtu, u32 speed)
|
{
|
int factor = MLXSW_SP2_SPAN_EG_MIRROR_BUFFER_FACTOR;
|
|
return __mlxsw_sp_pb_int_buf_size_get(mtu, speed, factor);
|
}
|
|
#define MLXSW_SP3_SPAN_EG_MIRROR_BUFFER_FACTOR 50
|
|
static u32 mlxsw_sp3_pb_int_buf_size_get(int mtu, u32 speed)
|
{
|
int factor = MLXSW_SP3_SPAN_EG_MIRROR_BUFFER_FACTOR;
|
|
return __mlxsw_sp_pb_int_buf_size_get(mtu, speed, factor);
|
}
|
|
const struct mlxsw_sp_sb_ops mlxsw_sp1_sb_ops = {
|
.int_buf_size_get = mlxsw_sp1_pb_int_buf_size_get,
|
};
|
|
const struct mlxsw_sp_sb_ops mlxsw_sp2_sb_ops = {
|
.int_buf_size_get = mlxsw_sp2_pb_int_buf_size_get,
|
};
|
|
const struct mlxsw_sp_sb_ops mlxsw_sp3_sb_ops = {
|
.int_buf_size_get = mlxsw_sp3_pb_int_buf_size_get,
|
};
|
|
int mlxsw_sp_buffers_init(struct mlxsw_sp *mlxsw_sp)
|
{
|
u32 max_headroom_size;
|
u16 ing_pool_count = 0;
|
u16 eg_pool_count = 0;
|
int err;
|
|
if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, CELL_SIZE))
|
return -EIO;
|
|
if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, GUARANTEED_SHARED_BUFFER))
|
return -EIO;
|
|
if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_HEADROOM_SIZE))
|
return -EIO;
|
|
mlxsw_sp->sb = kzalloc(sizeof(*mlxsw_sp->sb), GFP_KERNEL);
|
if (!mlxsw_sp->sb)
|
return -ENOMEM;
|
mlxsw_sp->sb->cell_size = MLXSW_CORE_RES_GET(mlxsw_sp->core, CELL_SIZE);
|
mlxsw_sp->sb->sb_size = MLXSW_CORE_RES_GET(mlxsw_sp->core,
|
GUARANTEED_SHARED_BUFFER);
|
max_headroom_size = MLXSW_CORE_RES_GET(mlxsw_sp->core,
|
MAX_HEADROOM_SIZE);
|
/* Round down, because this limit must not be overstepped. */
|
mlxsw_sp->sb->max_headroom_cells = max_headroom_size /
|
mlxsw_sp->sb->cell_size;
|
|
err = mlxsw_sp_sb_ports_init(mlxsw_sp);
|
if (err)
|
goto err_sb_ports_init;
|
err = mlxsw_sp_sb_prs_init(mlxsw_sp, mlxsw_sp->sb_vals->prs,
|
mlxsw_sp->sb_vals->pool_dess,
|
mlxsw_sp->sb_vals->pool_count);
|
if (err)
|
goto err_sb_prs_init;
|
err = mlxsw_sp_cpu_port_sb_cms_init(mlxsw_sp);
|
if (err)
|
goto err_sb_cpu_port_sb_cms_init;
|
err = mlxsw_sp_cpu_port_sb_pms_init(mlxsw_sp);
|
if (err)
|
goto err_sb_cpu_port_pms_init;
|
err = mlxsw_sp_sb_mms_init(mlxsw_sp);
|
if (err)
|
goto err_sb_mms_init;
|
mlxsw_sp_pool_count(mlxsw_sp, &ing_pool_count, &eg_pool_count);
|
err = devlink_sb_register(priv_to_devlink(mlxsw_sp->core), 0,
|
mlxsw_sp->sb->sb_size,
|
ing_pool_count,
|
eg_pool_count,
|
MLXSW_SP_SB_ING_TC_COUNT,
|
MLXSW_SP_SB_EG_TC_COUNT);
|
if (err)
|
goto err_devlink_sb_register;
|
|
return 0;
|
|
err_devlink_sb_register:
|
err_sb_mms_init:
|
err_sb_cpu_port_pms_init:
|
err_sb_cpu_port_sb_cms_init:
|
err_sb_prs_init:
|
mlxsw_sp_sb_ports_fini(mlxsw_sp);
|
err_sb_ports_init:
|
kfree(mlxsw_sp->sb);
|
return err;
|
}
|
|
void mlxsw_sp_buffers_fini(struct mlxsw_sp *mlxsw_sp)
|
{
|
devlink_sb_unregister(priv_to_devlink(mlxsw_sp->core), 0);
|
mlxsw_sp_sb_ports_fini(mlxsw_sp);
|
kfree(mlxsw_sp->sb);
|
}
|
|
int mlxsw_sp_port_buffers_init(struct mlxsw_sp_port *mlxsw_sp_port)
|
{
|
int err;
|
|
mlxsw_sp_port->hdroom = kzalloc(sizeof(*mlxsw_sp_port->hdroom), GFP_KERNEL);
|
if (!mlxsw_sp_port->hdroom)
|
return -ENOMEM;
|
mlxsw_sp_port->hdroom->mtu = mlxsw_sp_port->dev->mtu;
|
|
err = mlxsw_sp_port_headroom_init(mlxsw_sp_port);
|
if (err)
|
goto err_headroom_init;
|
err = mlxsw_sp_port_sb_cms_init(mlxsw_sp_port);
|
if (err)
|
goto err_port_sb_cms_init;
|
err = mlxsw_sp_port_sb_pms_init(mlxsw_sp_port);
|
if (err)
|
goto err_port_sb_pms_init;
|
return 0;
|
|
err_port_sb_pms_init:
|
err_port_sb_cms_init:
|
err_headroom_init:
|
kfree(mlxsw_sp_port->hdroom);
|
return err;
|
}
|
|
void mlxsw_sp_port_buffers_fini(struct mlxsw_sp_port *mlxsw_sp_port)
|
{
|
kfree(mlxsw_sp_port->hdroom);
|
}
|
|
int mlxsw_sp_sb_pool_get(struct mlxsw_core *mlxsw_core,
|
unsigned int sb_index, u16 pool_index,
|
struct devlink_sb_pool_info *pool_info)
|
{
|
struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
|
enum mlxsw_reg_sbxx_dir dir;
|
struct mlxsw_sp_sb_pr *pr;
|
|
dir = mlxsw_sp->sb_vals->pool_dess[pool_index].dir;
|
pr = mlxsw_sp_sb_pr_get(mlxsw_sp, pool_index);
|
pool_info->pool_type = (enum devlink_sb_pool_type) dir;
|
pool_info->size = mlxsw_sp_cells_bytes(mlxsw_sp, pr->size);
|
pool_info->threshold_type = (enum devlink_sb_threshold_type) pr->mode;
|
pool_info->cell_size = mlxsw_sp->sb->cell_size;
|
return 0;
|
}
|
|
int mlxsw_sp_sb_pool_set(struct mlxsw_core *mlxsw_core,
|
unsigned int sb_index, u16 pool_index, u32 size,
|
enum devlink_sb_threshold_type threshold_type,
|
struct netlink_ext_ack *extack)
|
{
|
struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
|
u32 pool_size = mlxsw_sp_bytes_cells(mlxsw_sp, size);
|
const struct mlxsw_sp_sb_pr *pr;
|
enum mlxsw_reg_sbpr_mode mode;
|
|
mode = (enum mlxsw_reg_sbpr_mode) threshold_type;
|
pr = &mlxsw_sp->sb_vals->prs[pool_index];
|
|
if (size > MLXSW_CORE_RES_GET(mlxsw_sp->core,
|
GUARANTEED_SHARED_BUFFER)) {
|
NL_SET_ERR_MSG_MOD(extack, "Exceeded shared buffer size");
|
return -EINVAL;
|
}
|
|
if (pr->freeze_mode && pr->mode != mode) {
|
NL_SET_ERR_MSG_MOD(extack, "Changing this pool's threshold type is forbidden");
|
return -EINVAL;
|
}
|
|
if (pr->freeze_size && pr->size != size) {
|
NL_SET_ERR_MSG_MOD(extack, "Changing this pool's size is forbidden");
|
return -EINVAL;
|
}
|
|
return mlxsw_sp_sb_pr_write(mlxsw_sp, pool_index, mode,
|
pool_size, false);
|
}
|
|
#define MLXSW_SP_SB_THRESHOLD_TO_ALPHA_OFFSET (-2) /* 3->1, 16->14 */
|
|
static u32 mlxsw_sp_sb_threshold_out(struct mlxsw_sp *mlxsw_sp, u16 pool_index,
|
u32 max_buff)
|
{
|
struct mlxsw_sp_sb_pr *pr = mlxsw_sp_sb_pr_get(mlxsw_sp, pool_index);
|
|
if (pr->mode == MLXSW_REG_SBPR_MODE_DYNAMIC)
|
return max_buff - MLXSW_SP_SB_THRESHOLD_TO_ALPHA_OFFSET;
|
return mlxsw_sp_cells_bytes(mlxsw_sp, max_buff);
|
}
|
|
static int mlxsw_sp_sb_threshold_in(struct mlxsw_sp *mlxsw_sp, u16 pool_index,
|
u32 threshold, u32 *p_max_buff,
|
struct netlink_ext_ack *extack)
|
{
|
struct mlxsw_sp_sb_pr *pr = mlxsw_sp_sb_pr_get(mlxsw_sp, pool_index);
|
|
if (pr->mode == MLXSW_REG_SBPR_MODE_DYNAMIC) {
|
int val;
|
|
val = threshold + MLXSW_SP_SB_THRESHOLD_TO_ALPHA_OFFSET;
|
if (val < MLXSW_REG_SBXX_DYN_MAX_BUFF_MIN ||
|
val > MLXSW_REG_SBXX_DYN_MAX_BUFF_MAX) {
|
NL_SET_ERR_MSG_MOD(extack, "Invalid dynamic threshold value");
|
return -EINVAL;
|
}
|
*p_max_buff = val;
|
} else {
|
*p_max_buff = mlxsw_sp_bytes_cells(mlxsw_sp, threshold);
|
}
|
return 0;
|
}
|
|
int mlxsw_sp_sb_port_pool_get(struct mlxsw_core_port *mlxsw_core_port,
|
unsigned int sb_index, u16 pool_index,
|
u32 *p_threshold)
|
{
|
struct mlxsw_sp_port *mlxsw_sp_port =
|
mlxsw_core_port_driver_priv(mlxsw_core_port);
|
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
|
u8 local_port = mlxsw_sp_port->local_port;
|
struct mlxsw_sp_sb_pm *pm = mlxsw_sp_sb_pm_get(mlxsw_sp, local_port,
|
pool_index);
|
|
*p_threshold = mlxsw_sp_sb_threshold_out(mlxsw_sp, pool_index,
|
pm->max_buff);
|
return 0;
|
}
|
|
int mlxsw_sp_sb_port_pool_set(struct mlxsw_core_port *mlxsw_core_port,
|
unsigned int sb_index, u16 pool_index,
|
u32 threshold, struct netlink_ext_ack *extack)
|
{
|
struct mlxsw_sp_port *mlxsw_sp_port =
|
mlxsw_core_port_driver_priv(mlxsw_core_port);
|
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
|
u8 local_port = mlxsw_sp_port->local_port;
|
u32 max_buff;
|
int err;
|
|
if (local_port == MLXSW_PORT_CPU_PORT) {
|
NL_SET_ERR_MSG_MOD(extack, "Changing CPU port's threshold is forbidden");
|
return -EINVAL;
|
}
|
|
err = mlxsw_sp_sb_threshold_in(mlxsw_sp, pool_index,
|
threshold, &max_buff, extack);
|
if (err)
|
return err;
|
|
return mlxsw_sp_sb_pm_write(mlxsw_sp, local_port, pool_index,
|
0, max_buff);
|
}
|
|
int mlxsw_sp_sb_tc_pool_bind_get(struct mlxsw_core_port *mlxsw_core_port,
|
unsigned int sb_index, u16 tc_index,
|
enum devlink_sb_pool_type pool_type,
|
u16 *p_pool_index, u32 *p_threshold)
|
{
|
struct mlxsw_sp_port *mlxsw_sp_port =
|
mlxsw_core_port_driver_priv(mlxsw_core_port);
|
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
|
u8 local_port = mlxsw_sp_port->local_port;
|
u8 pg_buff = tc_index;
|
enum mlxsw_reg_sbxx_dir dir = (enum mlxsw_reg_sbxx_dir) pool_type;
|
struct mlxsw_sp_sb_cm *cm = mlxsw_sp_sb_cm_get(mlxsw_sp, local_port,
|
pg_buff, dir);
|
|
*p_threshold = mlxsw_sp_sb_threshold_out(mlxsw_sp, cm->pool_index,
|
cm->max_buff);
|
*p_pool_index = cm->pool_index;
|
return 0;
|
}
|
|
int mlxsw_sp_sb_tc_pool_bind_set(struct mlxsw_core_port *mlxsw_core_port,
|
unsigned int sb_index, u16 tc_index,
|
enum devlink_sb_pool_type pool_type,
|
u16 pool_index, u32 threshold,
|
struct netlink_ext_ack *extack)
|
{
|
struct mlxsw_sp_port *mlxsw_sp_port =
|
mlxsw_core_port_driver_priv(mlxsw_core_port);
|
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
|
u8 local_port = mlxsw_sp_port->local_port;
|
const struct mlxsw_sp_sb_cm *cm;
|
u8 pg_buff = tc_index;
|
enum mlxsw_reg_sbxx_dir dir = (enum mlxsw_reg_sbxx_dir) pool_type;
|
u32 max_buff;
|
int err;
|
|
if (local_port == MLXSW_PORT_CPU_PORT) {
|
NL_SET_ERR_MSG_MOD(extack, "Changing CPU port's binding is forbidden");
|
return -EINVAL;
|
}
|
|
if (dir != mlxsw_sp->sb_vals->pool_dess[pool_index].dir) {
|
NL_SET_ERR_MSG_MOD(extack, "Binding egress TC to ingress pool and vice versa is forbidden");
|
return -EINVAL;
|
}
|
|
if (dir == MLXSW_REG_SBXX_DIR_INGRESS)
|
cm = &mlxsw_sp->sb_vals->cms_ingress[tc_index];
|
else
|
cm = &mlxsw_sp->sb_vals->cms_egress[tc_index];
|
|
if (cm->freeze_pool && cm->pool_index != pool_index) {
|
NL_SET_ERR_MSG_MOD(extack, "Binding this TC to a different pool is forbidden");
|
return -EINVAL;
|
}
|
|
if (cm->freeze_thresh && cm->max_buff != threshold) {
|
NL_SET_ERR_MSG_MOD(extack, "Changing this TC's threshold is forbidden");
|
return -EINVAL;
|
}
|
|
err = mlxsw_sp_sb_threshold_in(mlxsw_sp, pool_index,
|
threshold, &max_buff, extack);
|
if (err)
|
return err;
|
|
return mlxsw_sp_sb_cm_write(mlxsw_sp, local_port, pg_buff,
|
0, max_buff, false, pool_index);
|
}
|
|
#define MASKED_COUNT_MAX \
|
(MLXSW_REG_SBSR_REC_MAX_COUNT / \
|
(MLXSW_SP_SB_ING_TC_COUNT + MLXSW_SP_SB_EG_TC_COUNT))
|
|
struct mlxsw_sp_sb_sr_occ_query_cb_ctx {
|
u8 masked_count;
|
u8 local_port_1;
|
};
|
|
static void mlxsw_sp_sb_sr_occ_query_cb(struct mlxsw_core *mlxsw_core,
|
char *sbsr_pl, size_t sbsr_pl_len,
|
unsigned long cb_priv)
|
{
|
struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
|
struct mlxsw_sp_sb_sr_occ_query_cb_ctx cb_ctx;
|
u8 masked_count;
|
u8 local_port;
|
int rec_index = 0;
|
struct mlxsw_sp_sb_cm *cm;
|
int i;
|
|
memcpy(&cb_ctx, &cb_priv, sizeof(cb_ctx));
|
|
masked_count = 0;
|
for (local_port = cb_ctx.local_port_1;
|
local_port < mlxsw_core_max_ports(mlxsw_core); local_port++) {
|
if (!mlxsw_sp->ports[local_port])
|
continue;
|
if (local_port == MLXSW_PORT_CPU_PORT) {
|
/* Ingress quotas are not supported for the CPU port */
|
masked_count++;
|
continue;
|
}
|
for (i = 0; i < MLXSW_SP_SB_ING_TC_COUNT; i++) {
|
cm = mlxsw_sp_sb_cm_get(mlxsw_sp, local_port, i,
|
MLXSW_REG_SBXX_DIR_INGRESS);
|
mlxsw_reg_sbsr_rec_unpack(sbsr_pl, rec_index++,
|
&cm->occ.cur, &cm->occ.max);
|
}
|
if (++masked_count == cb_ctx.masked_count)
|
break;
|
}
|
masked_count = 0;
|
for (local_port = cb_ctx.local_port_1;
|
local_port < mlxsw_core_max_ports(mlxsw_core); local_port++) {
|
if (!mlxsw_sp->ports[local_port])
|
continue;
|
for (i = 0; i < MLXSW_SP_SB_EG_TC_COUNT; i++) {
|
cm = mlxsw_sp_sb_cm_get(mlxsw_sp, local_port, i,
|
MLXSW_REG_SBXX_DIR_EGRESS);
|
mlxsw_reg_sbsr_rec_unpack(sbsr_pl, rec_index++,
|
&cm->occ.cur, &cm->occ.max);
|
}
|
if (++masked_count == cb_ctx.masked_count)
|
break;
|
}
|
}
|
|
int mlxsw_sp_sb_occ_snapshot(struct mlxsw_core *mlxsw_core,
|
unsigned int sb_index)
|
{
|
struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
|
struct mlxsw_sp_sb_sr_occ_query_cb_ctx cb_ctx;
|
unsigned long cb_priv;
|
LIST_HEAD(bulk_list);
|
char *sbsr_pl;
|
u8 masked_count;
|
u8 local_port_1;
|
u8 local_port;
|
int i;
|
int err;
|
int err2;
|
|
sbsr_pl = kmalloc(MLXSW_REG_SBSR_LEN, GFP_KERNEL);
|
if (!sbsr_pl)
|
return -ENOMEM;
|
|
local_port = MLXSW_PORT_CPU_PORT;
|
next_batch:
|
local_port_1 = local_port;
|
masked_count = 0;
|
mlxsw_reg_sbsr_pack(sbsr_pl, false);
|
for (i = 0; i < MLXSW_SP_SB_ING_TC_COUNT; i++)
|
mlxsw_reg_sbsr_pg_buff_mask_set(sbsr_pl, i, 1);
|
for (i = 0; i < MLXSW_SP_SB_EG_TC_COUNT; i++)
|
mlxsw_reg_sbsr_tclass_mask_set(sbsr_pl, i, 1);
|
for (; local_port < mlxsw_core_max_ports(mlxsw_core); local_port++) {
|
if (!mlxsw_sp->ports[local_port])
|
continue;
|
if (local_port != MLXSW_PORT_CPU_PORT) {
|
/* Ingress quotas are not supported for the CPU port */
|
mlxsw_reg_sbsr_ingress_port_mask_set(sbsr_pl,
|
local_port, 1);
|
}
|
mlxsw_reg_sbsr_egress_port_mask_set(sbsr_pl, local_port, 1);
|
for (i = 0; i < mlxsw_sp->sb_vals->pool_count; i++) {
|
err = mlxsw_sp_sb_pm_occ_query(mlxsw_sp, local_port, i,
|
&bulk_list);
|
if (err)
|
goto out;
|
}
|
if (++masked_count == MASKED_COUNT_MAX)
|
goto do_query;
|
}
|
|
do_query:
|
cb_ctx.masked_count = masked_count;
|
cb_ctx.local_port_1 = local_port_1;
|
memcpy(&cb_priv, &cb_ctx, sizeof(cb_ctx));
|
err = mlxsw_reg_trans_query(mlxsw_core, MLXSW_REG(sbsr), sbsr_pl,
|
&bulk_list, mlxsw_sp_sb_sr_occ_query_cb,
|
cb_priv);
|
if (err)
|
goto out;
|
if (local_port < mlxsw_core_max_ports(mlxsw_core)) {
|
local_port++;
|
goto next_batch;
|
}
|
|
out:
|
err2 = mlxsw_reg_trans_bulk_wait(&bulk_list);
|
if (!err)
|
err = err2;
|
kfree(sbsr_pl);
|
return err;
|
}
|
|
int mlxsw_sp_sb_occ_max_clear(struct mlxsw_core *mlxsw_core,
|
unsigned int sb_index)
|
{
|
struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
|
LIST_HEAD(bulk_list);
|
char *sbsr_pl;
|
unsigned int masked_count;
|
u8 local_port;
|
int i;
|
int err;
|
int err2;
|
|
sbsr_pl = kmalloc(MLXSW_REG_SBSR_LEN, GFP_KERNEL);
|
if (!sbsr_pl)
|
return -ENOMEM;
|
|
local_port = MLXSW_PORT_CPU_PORT;
|
next_batch:
|
masked_count = 0;
|
mlxsw_reg_sbsr_pack(sbsr_pl, true);
|
for (i = 0; i < MLXSW_SP_SB_ING_TC_COUNT; i++)
|
mlxsw_reg_sbsr_pg_buff_mask_set(sbsr_pl, i, 1);
|
for (i = 0; i < MLXSW_SP_SB_EG_TC_COUNT; i++)
|
mlxsw_reg_sbsr_tclass_mask_set(sbsr_pl, i, 1);
|
for (; local_port < mlxsw_core_max_ports(mlxsw_core); local_port++) {
|
if (!mlxsw_sp->ports[local_port])
|
continue;
|
if (local_port != MLXSW_PORT_CPU_PORT) {
|
/* Ingress quotas are not supported for the CPU port */
|
mlxsw_reg_sbsr_ingress_port_mask_set(sbsr_pl,
|
local_port, 1);
|
}
|
mlxsw_reg_sbsr_egress_port_mask_set(sbsr_pl, local_port, 1);
|
for (i = 0; i < mlxsw_sp->sb_vals->pool_count; i++) {
|
err = mlxsw_sp_sb_pm_occ_clear(mlxsw_sp, local_port, i,
|
&bulk_list);
|
if (err)
|
goto out;
|
}
|
if (++masked_count == MASKED_COUNT_MAX)
|
goto do_query;
|
}
|
|
do_query:
|
err = mlxsw_reg_trans_query(mlxsw_core, MLXSW_REG(sbsr), sbsr_pl,
|
&bulk_list, NULL, 0);
|
if (err)
|
goto out;
|
if (local_port < mlxsw_core_max_ports(mlxsw_core)) {
|
local_port++;
|
goto next_batch;
|
}
|
|
out:
|
err2 = mlxsw_reg_trans_bulk_wait(&bulk_list);
|
if (!err)
|
err = err2;
|
kfree(sbsr_pl);
|
return err;
|
}
|
|
int mlxsw_sp_sb_occ_port_pool_get(struct mlxsw_core_port *mlxsw_core_port,
|
unsigned int sb_index, u16 pool_index,
|
u32 *p_cur, u32 *p_max)
|
{
|
struct mlxsw_sp_port *mlxsw_sp_port =
|
mlxsw_core_port_driver_priv(mlxsw_core_port);
|
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
|
u8 local_port = mlxsw_sp_port->local_port;
|
struct mlxsw_sp_sb_pm *pm = mlxsw_sp_sb_pm_get(mlxsw_sp, local_port,
|
pool_index);
|
|
*p_cur = mlxsw_sp_cells_bytes(mlxsw_sp, pm->occ.cur);
|
*p_max = mlxsw_sp_cells_bytes(mlxsw_sp, pm->occ.max);
|
return 0;
|
}
|
|
int mlxsw_sp_sb_occ_tc_port_bind_get(struct mlxsw_core_port *mlxsw_core_port,
|
unsigned int sb_index, u16 tc_index,
|
enum devlink_sb_pool_type pool_type,
|
u32 *p_cur, u32 *p_max)
|
{
|
struct mlxsw_sp_port *mlxsw_sp_port =
|
mlxsw_core_port_driver_priv(mlxsw_core_port);
|
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
|
u8 local_port = mlxsw_sp_port->local_port;
|
u8 pg_buff = tc_index;
|
enum mlxsw_reg_sbxx_dir dir = (enum mlxsw_reg_sbxx_dir) pool_type;
|
struct mlxsw_sp_sb_cm *cm = mlxsw_sp_sb_cm_get(mlxsw_sp, local_port,
|
pg_buff, dir);
|
|
*p_cur = mlxsw_sp_cells_bytes(mlxsw_sp, cm->occ.cur);
|
*p_max = mlxsw_sp_cells_bytes(mlxsw_sp, cm->occ.max);
|
return 0;
|
}
|
