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Message-Id: <20201211170413.2269479-9-idosch@idosch.org>
Date: Fri, 11 Dec 2020 19:04:06 +0200
From: Ido Schimmel <idosch@...sch.org>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, kuba@...nel.org, jiri@...dia.com,
mlxsw@...dia.com, Ido Schimmel <idosch@...dia.com>
Subject: [PATCH net-next 08/15] mlxsw: spectrum_router: Introduce per-ASIC XM initialization
From: Jiri Pirko <jiri@...dia.com>
During the router init flow, call into XM code and initialize couple of
items needed for XM functionality:
1) Query the capabilities and sizes. Check the XM device id.
2) Initialize the M-value. Note that currently the M-value is set fixed
to 16 for IPv4. In future this may change to better cover the actual
inserted routes.
Signed-off-by: Jiri Pirko <jiri@...dia.com>
Signed-off-by: Ido Schimmel <idosch@...dia.com>
---
.../ethernet/mellanox/mlxsw/spectrum_router.c | 7 ++
.../ethernet/mellanox/mlxsw/spectrum_router.h | 4 +
.../mellanox/mlxsw/spectrum_router_xm.c | 77 +++++++++++++++++++
3 files changed, 88 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index f132fa6cf7b7..3b32d9648578 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -9208,6 +9208,10 @@ int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp,
mlxsw_sp->router = router;
router->mlxsw_sp = mlxsw_sp;
+ err = mlxsw_sp_router_xm_init(mlxsw_sp);
+ if (err)
+ goto err_xm_init;
+
router->proto_ll_ops[MLXSW_SP_L3_PROTO_IPV4] = &mlxsw_sp_router_ll_basic_ops;
router->proto_ll_ops[MLXSW_SP_L3_PROTO_IPV6] = &mlxsw_sp_router_ll_basic_ops;
@@ -9340,6 +9344,8 @@ int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp,
err_router_init:
mlxsw_sp_router_ll_op_ctx_fini(router);
err_ll_op_ctx_init:
+ mlxsw_sp_router_xm_fini(mlxsw_sp);
+err_xm_init:
mutex_destroy(&mlxsw_sp->router->lock);
kfree(mlxsw_sp->router);
return err;
@@ -9367,6 +9373,7 @@ void mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp)
mlxsw_sp_rifs_fini(mlxsw_sp);
__mlxsw_sp_router_fini(mlxsw_sp);
mlxsw_sp_router_ll_op_ctx_fini(mlxsw_sp->router);
+ mlxsw_sp_router_xm_fini(mlxsw_sp);
mutex_destroy(&mlxsw_sp->router->lock);
kfree(mlxsw_sp->router);
}
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h
index fe1b92110844..d6f7aba6eb9c 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h
@@ -76,6 +76,7 @@ struct mlxsw_sp_router {
const struct mlxsw_sp_router_ll_ops *proto_ll_ops[MLXSW_SP_L3_PROTO_MAX];
struct mlxsw_sp_fib_entry_op_ctx *ll_op_ctx;
u16 lb_rif_index;
+ struct mlxsw_sp_router_xm *xm;
};
struct mlxsw_sp_fib_entry_priv {
@@ -223,4 +224,7 @@ int mlxsw_sp_ipip_ecn_decap_init(struct mlxsw_sp *mlxsw_sp);
extern const struct mlxsw_sp_router_ll_ops mlxsw_sp_router_ll_xm_ops;
+int mlxsw_sp_router_xm_init(struct mlxsw_sp *mlxsw_sp);
+void mlxsw_sp_router_xm_fini(struct mlxsw_sp *mlxsw_sp);
+
#endif /* _MLXSW_ROUTER_H_*/
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router_xm.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router_xm.c
index f5b4c0edf99d..966a20f3bc0d 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router_xm.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router_xm.c
@@ -9,6 +9,19 @@
#include "reg.h"
#include "spectrum_router.h"
+#define MLXSW_SP_ROUTER_XM_M_VAL 16
+
+static const u8 mlxsw_sp_router_xm_m_val[] = {
+ [MLXSW_SP_L3_PROTO_IPV4] = MLXSW_SP_ROUTER_XM_M_VAL,
+ [MLXSW_SP_L3_PROTO_IPV6] = 0, /* Currently unused. */
+};
+
+struct mlxsw_sp_router_xm {
+ bool ipv4_supported;
+ bool ipv6_supported;
+ unsigned int entries_size;
+};
+
struct mlxsw_sp_router_xm_fib_entry {
bool committed;
};
@@ -232,3 +245,67 @@ const struct mlxsw_sp_router_ll_ops mlxsw_sp_router_ll_xm_ops = {
.fib_entry_commit = mlxsw_sp_router_ll_xm_fib_entry_commit,
.fib_entry_is_committed = mlxsw_sp_router_ll_xm_fib_entry_is_committed,
};
+
+#define MLXSW_SP_ROUTER_XM_MINDEX_SIZE (64 * 1024)
+
+int mlxsw_sp_router_xm_init(struct mlxsw_sp *mlxsw_sp)
+{
+ struct mlxsw_sp_router_xm *router_xm;
+ char rxltm_pl[MLXSW_REG_RXLTM_LEN];
+ char xltq_pl[MLXSW_REG_XLTQ_LEN];
+ u32 mindex_size;
+ u16 device_id;
+ int err;
+
+ if (!mlxsw_sp->bus_info->xm_exists)
+ return 0;
+
+ router_xm = kzalloc(sizeof(*router_xm), GFP_KERNEL);
+ if (!router_xm)
+ return -ENOMEM;
+
+ mlxsw_reg_xltq_pack(xltq_pl);
+ err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(xltq), xltq_pl);
+ if (err)
+ goto err_xltq_query;
+ mlxsw_reg_xltq_unpack(xltq_pl, &device_id, &router_xm->ipv4_supported,
+ &router_xm->ipv6_supported, &router_xm->entries_size, &mindex_size);
+
+ if (device_id != MLXSW_REG_XLTQ_XM_DEVICE_ID_XLT) {
+ dev_err(mlxsw_sp->bus_info->dev, "Invalid XM device id\n");
+ err = -EINVAL;
+ goto err_device_id_check;
+ }
+
+ if (mindex_size != MLXSW_SP_ROUTER_XM_MINDEX_SIZE) {
+ dev_err(mlxsw_sp->bus_info->dev, "Unexpected M-index size\n");
+ err = -EINVAL;
+ goto err_mindex_size_check;
+ }
+
+ mlxsw_reg_rxltm_pack(rxltm_pl, mlxsw_sp_router_xm_m_val[MLXSW_SP_L3_PROTO_IPV4],
+ mlxsw_sp_router_xm_m_val[MLXSW_SP_L3_PROTO_IPV6]);
+ err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rxltm), rxltm_pl);
+ if (err)
+ goto err_rxltm_write;
+
+ mlxsw_sp->router->xm = router_xm;
+ return 0;
+
+err_rxltm_write:
+err_mindex_size_check:
+err_device_id_check:
+err_xltq_query:
+ kfree(router_xm);
+ return err;
+}
+
+void mlxsw_sp_router_xm_fini(struct mlxsw_sp *mlxsw_sp)
+{
+ struct mlxsw_sp_router_xm *router_xm = mlxsw_sp->router->xm;
+
+ if (!mlxsw_sp->bus_info->xm_exists)
+ return;
+
+ kfree(router_xm);
+}
--
2.29.2
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