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path: root/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
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Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c')
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c422
1 files changed, 422 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
new file mode 100644
index 000000000000..d59195e3f7fb
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
@@ -0,0 +1,422 @@
+/*
+ * drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c
+ * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
+ * Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com>
+ *
+ * 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 <linux/kernel.h>
+#include <linux/types.h>
+
+#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);
+}
+
+#define MLXSW_SP_SB_BYTES_PER_CELL 96
+
+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)) / \
+ MLXSW_SP_SB_BYTES_PER_CELL)
+#define MLXSW_SP_SB_POOL_EGRESS_SIZE \
+ ((14000000 - (8 * 1500 * MLXSW_PORT_MAX_PORTS)) / \
+ MLXSW_SP_SB_BYTES_PER_CELL)
+
+#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_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_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_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, 10000 / MLXSW_SP_SB_BYTES_PER_CELL, 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, 20000 / MLXSW_SP_SB_BYTES_PER_CELL, 0xff),
+ MLXSW_SP_SB_CM_EGRESS(0, 1500 / MLXSW_SP_SB_BYTES_PER_CELL, 9),
+ MLXSW_SP_SB_CM_EGRESS(1, 1500 / MLXSW_SP_SB_BYTES_PER_CELL, 9),
+ MLXSW_SP_SB_CM_EGRESS(2, 1500 / MLXSW_SP_SB_BYTES_PER_CELL, 9),
+ MLXSW_SP_SB_CM_EGRESS(3, 1500 / MLXSW_SP_SB_BYTES_PER_CELL, 9),
+ MLXSW_SP_SB_CM_EGRESS(4, 1500 / MLXSW_SP_SB_BYTES_PER_CELL, 9),
+ MLXSW_SP_SB_CM_EGRESS(5, 1500 / MLXSW_SP_SB_BYTES_PER_CELL, 9),
+ MLXSW_SP_SB_CM_EGRESS(6, 1500 / MLXSW_SP_SB_BYTES_PER_CELL, 9),
+ MLXSW_SP_SB_CM_EGRESS(7, 1500 / MLXSW_SP_SB_BYTES_PER_CELL, 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, 20000 / MLXSW_SP_SB_BYTES_PER_CELL, 0xff, 0),
+ MLXSW_SP_SB_MM(1, 20000 / MLXSW_SP_SB_BYTES_PER_CELL, 0xff, 0),
+ MLXSW_SP_SB_MM(2, 20000 / MLXSW_SP_SB_BYTES_PER_CELL, 0xff, 0),
+ MLXSW_SP_SB_MM(3, 20000 / MLXSW_SP_SB_BYTES_PER_CELL, 0xff, 0),
+ MLXSW_SP_SB_MM(4, 20000 / MLXSW_SP_SB_BYTES_PER_CELL, 0xff, 0),
+ MLXSW_SP_SB_MM(5, 20000 / MLXSW_SP_SB_BYTES_PER_CELL, 0xff, 0),
+ MLXSW_SP_SB_MM(6, 20000 / MLXSW_SP_SB_BYTES_PER_CELL, 0xff, 0),
+ MLXSW_SP_SB_MM(7, 20000 / MLXSW_SP_SB_BYTES_PER_CELL, 0xff, 0),
+ MLXSW_SP_SB_MM(8, 20000 / MLXSW_SP_SB_BYTES_PER_CELL, 0xff, 0),
+ MLXSW_SP_SB_MM(9, 20000 / MLXSW_SP_SB_BYTES_PER_CELL, 0xff, 0),
+ MLXSW_SP_SB_MM(10, 20000 / MLXSW_SP_SB_BYTES_PER_CELL, 0xff, 0),
+ MLXSW_SP_SB_MM(11, 20000 / MLXSW_SP_SB_BYTES_PER_CELL, 0xff, 0),
+ MLXSW_SP_SB_MM(12, 20000 / MLXSW_SP_SB_BYTES_PER_CELL, 0xff, 0),
+ MLXSW_SP_SB_MM(13, 20000 / MLXSW_SP_SB_BYTES_PER_CELL, 0xff, 0),
+ MLXSW_SP_SB_MM(14, 20000 / MLXSW_SP_SB_BYTES_PER_CELL, 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_pb_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;
+}