/* * drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c * Copyright (c) 2015 Mellanox Technologies. All rights reserved. * Copyright (c) 2015 Jiri Pirko * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the names of the copyright holders nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include "spectrum.h" #include "core.h" #include "port.h" #include "reg.h" struct mlxsw_sp_pb { u8 index; u16 size; }; #define MLXSW_SP_PB(_index, _size) \ { \ .index = _index, \ .size = _size, \ } static const struct mlxsw_sp_pb mlxsw_sp_pbs[] = { MLXSW_SP_PB(0, 208), MLXSW_SP_PB(1, 208), MLXSW_SP_PB(2, 208), MLXSW_SP_PB(3, 208), MLXSW_SP_PB(4, 208), MLXSW_SP_PB(5, 208), MLXSW_SP_PB(6, 208), MLXSW_SP_PB(7, 208), MLXSW_SP_PB(9, 208), }; #define MLXSW_SP_PBS_LEN ARRAY_SIZE(mlxsw_sp_pbs) static int mlxsw_sp_port_pb_init(struct mlxsw_sp_port *mlxsw_sp_port) { char pbmc_pl[MLXSW_REG_PBMC_LEN]; int i; mlxsw_reg_pbmc_pack(pbmc_pl, mlxsw_sp_port->local_port, 0xffff, 0xffff / 2); for (i = 0; i < MLXSW_SP_PBS_LEN; i++) { const struct mlxsw_sp_pb *pb; pb = &mlxsw_sp_pbs[i]; mlxsw_reg_pbmc_lossy_buffer_pack(pbmc_pl, pb->index, pb->size); } return mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl); } static int mlxsw_sp_port_pb_prio_init(struct mlxsw_sp_port *mlxsw_sp_port) { char pptb_pl[MLXSW_REG_PPTB_LEN]; int i; mlxsw_reg_pptb_pack(pptb_pl, mlxsw_sp_port->local_port); for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) mlxsw_reg_pptb_prio_to_buff_set(pptb_pl, i, 0); return mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(pptb), pptb_pl); } static int mlxsw_sp_port_headroom_init(struct mlxsw_sp_port *mlxsw_sp_port) { int err; err = mlxsw_sp_port_pb_init(mlxsw_sp_port); if (err) return err; return mlxsw_sp_port_pb_prio_init(mlxsw_sp_port); } struct mlxsw_sp_sb_pool { u8 pool; enum mlxsw_reg_sbpr_dir dir; enum mlxsw_reg_sbpr_mode mode; u32 size; }; #define MLXSW_SP_SB_POOL_INGRESS_SIZE \ (15000000 - (2 * 20000 * MLXSW_PORT_MAX_PORTS)) #define MLXSW_SP_SB_POOL_EGRESS_SIZE \ (14000000 - (8 * 1500 * MLXSW_PORT_MAX_PORTS)) #define MLXSW_SP_SB_POOL(_pool, _dir, _mode, _size) \ { \ .pool = _pool, \ .dir = _dir, \ .mode = _mode, \ .size = _size, \ } #define MLXSW_SP_SB_POOL_INGRESS(_pool, _size) \ MLXSW_SP_SB_POOL(_pool, MLXSW_REG_SBPR_DIR_INGRESS, \ MLXSW_REG_SBPR_MODE_DYNAMIC, _size) #define MLXSW_SP_SB_POOL_EGRESS(_pool, _size) \ MLXSW_SP_SB_POOL(_pool, MLXSW_REG_SBPR_DIR_EGRESS, \ MLXSW_REG_SBPR_MODE_DYNAMIC, _size) static const struct mlxsw_sp_sb_pool mlxsw_sp_sb_pools[] = { MLXSW_SP_SB_POOL_INGRESS(0, MLXSW_SP_BYTES_TO_CELLS(MLXSW_SP_SB_POOL_INGRESS_SIZE)), MLXSW_SP_SB_POOL_INGRESS(1, 0), MLXSW_SP_SB_POOL_INGRESS(2, 0), MLXSW_SP_SB_POOL_INGRESS(3, 0), MLXSW_SP_SB_POOL_EGRESS(0, MLXSW_SP_BYTES_TO_CELLS(MLXSW_SP_SB_POOL_EGRESS_SIZE)), MLXSW_SP_SB_POOL_EGRESS(1, 0), MLXSW_SP_SB_POOL_EGRESS(2, 0), MLXSW_SP_SB_POOL_EGRESS(2, MLXSW_SP_BYTES_TO_CELLS(MLXSW_SP_SB_POOL_EGRESS_SIZE)), }; #define MLXSW_SP_SB_POOLS_LEN ARRAY_SIZE(mlxsw_sp_sb_pools) static int mlxsw_sp_sb_pools_init(struct mlxsw_sp *mlxsw_sp) { char sbpr_pl[MLXSW_REG_SBPR_LEN]; int i; int err; for (i = 0; i < MLXSW_SP_SB_POOLS_LEN; i++) { const struct mlxsw_sp_sb_pool *pool; pool = &mlxsw_sp_sb_pools[i]; mlxsw_reg_sbpr_pack(sbpr_pl, pool->pool, pool->dir, pool->mode, pool->size); err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbpr), sbpr_pl); if (err) return err; } return 0; } struct mlxsw_sp_sb_cm { union { u8 pg; u8 tc; } u; enum mlxsw_reg_sbcm_dir dir; u32 min_buff; u32 max_buff; u8 pool; }; #define MLXSW_SP_SB_CM(_pg_tc, _dir, _min_buff, _max_buff, _pool) \ { \ .u.pg = _pg_tc, \ .dir = _dir, \ .min_buff = _min_buff, \ .max_buff = _max_buff, \ .pool = _pool, \ } #define MLXSW_SP_SB_CM_INGRESS(_pg, _min_buff, _max_buff) \ MLXSW_SP_SB_CM(_pg, MLXSW_REG_SBCM_DIR_INGRESS, \ _min_buff, _max_buff, 0) #define MLXSW_SP_SB_CM_EGRESS(_tc, _min_buff, _max_buff) \ MLXSW_SP_SB_CM(_tc, MLXSW_REG_SBCM_DIR_EGRESS, \ _min_buff, _max_buff, 0) #define MLXSW_SP_CPU_PORT_SB_CM_EGRESS(_tc) \ MLXSW_SP_SB_CM(_tc, MLXSW_REG_SBCM_DIR_EGRESS, 104, 2, 3) static const struct mlxsw_sp_sb_cm mlxsw_sp_sb_cms[] = { MLXSW_SP_SB_CM_INGRESS(0, MLXSW_SP_BYTES_TO_CELLS(10000), 8), MLXSW_SP_SB_CM_INGRESS(1, 0, 0), MLXSW_SP_SB_CM_INGRESS(2, 0, 0), MLXSW_SP_SB_CM_INGRESS(3, 0, 0), MLXSW_SP_SB_CM_INGRESS(4, 0, 0), MLXSW_SP_SB_CM_INGRESS(5, 0, 0), MLXSW_SP_SB_CM_INGRESS(6, 0, 0), MLXSW_SP_SB_CM_INGRESS(7, 0, 0), MLXSW_SP_SB_CM_INGRESS(9, MLXSW_SP_BYTES_TO_CELLS(20000), 0xff), MLXSW_SP_SB_CM_EGRESS(0, MLXSW_SP_BYTES_TO_CELLS(1500), 9), MLXSW_SP_SB_CM_EGRESS(1, MLXSW_SP_BYTES_TO_CELLS(1500), 9), MLXSW_SP_SB_CM_EGRESS(2, MLXSW_SP_BYTES_TO_CELLS(1500), 9), MLXSW_SP_SB_CM_EGRESS(3, MLXSW_SP_BYTES_TO_CELLS(1500), 9), MLXSW_SP_SB_CM_EGRESS(4, MLXSW_SP_BYTES_TO_CELLS(1500), 9), MLXSW_SP_SB_CM_EGRESS(5, MLXSW_SP_BYTES_TO_CELLS(1500), 9), MLXSW_SP_SB_CM_EGRESS(6, MLXSW_SP_BYTES_TO_CELLS(1500), 9), MLXSW_SP_SB_CM_EGRESS(7, MLXSW_SP_BYTES_TO_CELLS(1500), 9), MLXSW_SP_SB_CM_EGRESS(8, 0, 0), MLXSW_SP_SB_CM_EGRESS(9, 0, 0), MLXSW_SP_SB_CM_EGRESS(10, 0, 0), MLXSW_SP_SB_CM_EGRESS(11, 0, 0), MLXSW_SP_SB_CM_EGRESS(12, 0, 0), MLXSW_SP_SB_CM_EGRESS(13, 0, 0), MLXSW_SP_SB_CM_EGRESS(14, 0, 0), MLXSW_SP_SB_CM_EGRESS(15, 0, 0), MLXSW_SP_SB_CM_EGRESS(16, 1, 0xff), }; #define MLXSW_SP_SB_CMS_LEN ARRAY_SIZE(mlxsw_sp_sb_cms) static const struct mlxsw_sp_sb_cm mlxsw_sp_cpu_port_sb_cms[] = { MLXSW_SP_CPU_PORT_SB_CM_EGRESS(0), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(1), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(2), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(3), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(4), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(5), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(6), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(7), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(8), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(9), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(10), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(11), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(12), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(13), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(14), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(15), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(16), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(17), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(18), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(19), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(20), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(21), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(22), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(23), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(24), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(25), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(26), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(27), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(28), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(29), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(30), MLXSW_SP_CPU_PORT_SB_CM_EGRESS(31), }; #define MLXSW_SP_CPU_PORT_SB_MCS_LEN \ ARRAY_SIZE(mlxsw_sp_cpu_port_sb_cms) static int mlxsw_sp_sb_cms_init(struct mlxsw_sp *mlxsw_sp, u8 local_port, const struct mlxsw_sp_sb_cm *cms, size_t cms_len) { char sbcm_pl[MLXSW_REG_SBCM_LEN]; int i; int err; for (i = 0; i < cms_len; i++) { const struct mlxsw_sp_sb_cm *cm; cm = &cms[i]; mlxsw_reg_sbcm_pack(sbcm_pl, local_port, cm->u.pg, cm->dir, cm->min_buff, cm->max_buff, cm->pool); err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbcm), sbcm_pl); if (err) return err; } return 0; } static int mlxsw_sp_port_sb_cms_init(struct mlxsw_sp_port *mlxsw_sp_port) { return mlxsw_sp_sb_cms_init(mlxsw_sp_port->mlxsw_sp, mlxsw_sp_port->local_port, mlxsw_sp_sb_cms, MLXSW_SP_SB_CMS_LEN); } static int mlxsw_sp_cpu_port_sb_cms_init(struct mlxsw_sp *mlxsw_sp) { return mlxsw_sp_sb_cms_init(mlxsw_sp, 0, mlxsw_sp_cpu_port_sb_cms, MLXSW_SP_CPU_PORT_SB_MCS_LEN); } struct mlxsw_sp_sb_pm { u8 pool; enum mlxsw_reg_sbpm_dir dir; u32 min_buff; u32 max_buff; }; #define MLXSW_SP_SB_PM(_pool, _dir, _min_buff, _max_buff) \ { \ .pool = _pool, \ .dir = _dir, \ .min_buff = _min_buff, \ .max_buff = _max_buff, \ } #define MLXSW_SP_SB_PM_INGRESS(_pool, _min_buff, _max_buff) \ MLXSW_SP_SB_PM(_pool, MLXSW_REG_SBPM_DIR_INGRESS, \ _min_buff, _max_buff) #define MLXSW_SP_SB_PM_EGRESS(_pool, _min_buff, _max_buff) \ MLXSW_SP_SB_PM(_pool, MLXSW_REG_SBPM_DIR_EGRESS, \ _min_buff, _max_buff) static const struct mlxsw_sp_sb_pm mlxsw_sp_sb_pms[] = { MLXSW_SP_SB_PM_INGRESS(0, 0, 0xff), MLXSW_SP_SB_PM_INGRESS(1, 0, 0), MLXSW_SP_SB_PM_INGRESS(2, 0, 0), MLXSW_SP_SB_PM_INGRESS(3, 0, 0), MLXSW_SP_SB_PM_EGRESS(0, 0, 7), MLXSW_SP_SB_PM_EGRESS(1, 0, 0), MLXSW_SP_SB_PM_EGRESS(2, 0, 0), MLXSW_SP_SB_PM_EGRESS(3, 0, 0), }; #define MLXSW_SP_SB_PMS_LEN ARRAY_SIZE(mlxsw_sp_sb_pms) static int mlxsw_sp_port_sb_pms_init(struct mlxsw_sp_port *mlxsw_sp_port) { char sbpm_pl[MLXSW_REG_SBPM_LEN]; int i; int err; for (i = 0; i < MLXSW_SP_SB_PMS_LEN; i++) { const struct mlxsw_sp_sb_pm *pm; pm = &mlxsw_sp_sb_pms[i]; mlxsw_reg_sbpm_pack(sbpm_pl, mlxsw_sp_port->local_port, pm->pool, pm->dir, pm->min_buff, pm->max_buff); err = mlxsw_reg_write(mlxsw_sp_port->mlxsw_sp->core, MLXSW_REG(sbpm), sbpm_pl); if (err) return err; } return 0; } struct mlxsw_sp_sb_mm { u8 prio; u32 min_buff; u32 max_buff; u8 pool; }; #define MLXSW_SP_SB_MM(_prio, _min_buff, _max_buff, _pool) \ { \ .prio = _prio, \ .min_buff = _min_buff, \ .max_buff = _max_buff, \ .pool = _pool, \ } static const struct mlxsw_sp_sb_mm mlxsw_sp_sb_mms[] = { MLXSW_SP_SB_MM(0, MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0), MLXSW_SP_SB_MM(1, MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0), MLXSW_SP_SB_MM(2, MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0), MLXSW_SP_SB_MM(3, MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0), MLXSW_SP_SB_MM(4, MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0), MLXSW_SP_SB_MM(5, MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0), MLXSW_SP_SB_MM(6, MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0), MLXSW_SP_SB_MM(7, MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0), MLXSW_SP_SB_MM(8, MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0), MLXSW_SP_SB_MM(9, MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0), MLXSW_SP_SB_MM(10, MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0), MLXSW_SP_SB_MM(11, MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0), MLXSW_SP_SB_MM(12, MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0), MLXSW_SP_SB_MM(13, MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0), MLXSW_SP_SB_MM(14, MLXSW_SP_BYTES_TO_CELLS(20000), 0xff, 0), }; #define MLXSW_SP_SB_MMS_LEN ARRAY_SIZE(mlxsw_sp_sb_mms) 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_MMS_LEN; i++) { const struct mlxsw_sp_sb_mm *mc; mc = &mlxsw_sp_sb_mms[i]; mlxsw_reg_sbmm_pack(sbmm_pl, mc->prio, mc->min_buff, mc->max_buff, mc->pool); err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sbmm), sbmm_pl); if (err) return err; } return 0; } int mlxsw_sp_buffers_init(struct mlxsw_sp *mlxsw_sp) { int err; err = mlxsw_sp_sb_pools_init(mlxsw_sp); if (err) return err; err = mlxsw_sp_cpu_port_sb_cms_init(mlxsw_sp); if (err) return err; err = mlxsw_sp_sb_mms_init(mlxsw_sp); return err; } int mlxsw_sp_port_buffers_init(struct mlxsw_sp_port *mlxsw_sp_port) { int err; err = mlxsw_sp_port_headroom_init(mlxsw_sp_port); if (err) return err; err = mlxsw_sp_port_sb_cms_init(mlxsw_sp_port); if (err) return err; err = mlxsw_sp_port_sb_pms_init(mlxsw_sp_port); return err; }