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Date: Mon, 19 Feb 2018 12:28:41 +0100
From: Jiri Pirko <jiri@...nulli.us>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, idosch@...lanox.com, arkadis@...lanox.com,
mlxsw@...lanox.com
Subject: [patch net-next 3/5] mlxsw: spectrum_kvdl: Add support for linear division resources
From: Arkadi Sharshevsky <arkadis@...lanox.com>
The linear part of the KVD memory is sub-divided into multiple parts. This
patch exposes this internal partitions via the resource interface.
Signed-off-by: Arkadi Sharshevsky <arkadis@...lanox.com>
Signed-off-by: Jiri Pirko <jiri@...lanox.com>
---
drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 4 ++
drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 7 ++
.../net/ethernet/mellanox/mlxsw/spectrum_kvdl.c | 77 +++++++++++++++++++++-
3 files changed, 85 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 39196625ae8e..bfde93910f82 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -3885,6 +3885,10 @@ static int mlxsw_sp_resources_register(struct mlxsw_core *mlxsw_core)
if (err)
return err;
+ err = mlxsw_sp_kvdl_resources_register(devlink);
+ if (err)
+ return err;
+
double_size = kvd_size - linear_size;
double_size *= profile->kvd_hash_double_parts;
double_size /= profile->kvd_hash_double_parts +
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index 6718a1f0482c..675e03a892ed 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -70,12 +70,18 @@
#define MLXSW_SP_RESOURCE_NAME_KVD_LINEAR "linear"
#define MLXSW_SP_RESOURCE_NAME_KVD_HASH_SINGLE "hash_single"
#define MLXSW_SP_RESOURCE_NAME_KVD_HASH_DOUBLE "hash_double"
+#define MLXSW_SP_RESOURCE_NAME_KVD_LINEAR_SINGLES "singles"
+#define MLXSW_SP_RESOURCE_NAME_KVD_LINEAR_CHUNKS "chunks"
+#define MLXSW_SP_RESOURCE_NAME_KVD_LINEAR_LARGE_CHUNKS "large_chunks"
enum mlxsw_sp_resource_id {
MLXSW_SP_RESOURCE_KVD,
MLXSW_SP_RESOURCE_KVD_LINEAR,
MLXSW_SP_RESOURCE_KVD_HASH_SINGLE,
MLXSW_SP_RESOURCE_KVD_HASH_DOUBLE,
+ MLXSW_SP_RESOURCE_KVD_LINEAR_SINGLE,
+ MLXSW_SP_RESOURCE_KVD_LINEAR_CHUNKS,
+ MLXSW_SP_RESOURCE_KVD_LINEAR_LARGE_CHUNKS,
};
struct mlxsw_sp_port;
@@ -433,6 +439,7 @@ int mlxsw_sp_kvdl_alloc_size_query(struct mlxsw_sp *mlxsw_sp,
unsigned int entry_count,
unsigned int *p_alloc_size);
u64 mlxsw_sp_kvdl_occ_get(const struct mlxsw_sp *mlxsw_sp);
+int mlxsw_sp_kvdl_resources_register(struct devlink *devlink);
struct mlxsw_sp_acl_rule_info {
unsigned int priority;
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c
index 55f9d2d70f9e..d4335055ff85 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c
@@ -188,21 +188,27 @@ int mlxsw_sp_kvdl_alloc_size_query(struct mlxsw_sp *mlxsw_sp,
return 0;
}
+enum mlxsw_sp_kvdl_part_id {
+ MLXSW_SP_KVDL_PART_SINGLE,
+ MLXSW_SP_KVDL_PART_CHUNKS,
+ MLXSW_SP_KVDL_PART_LARGE_CHUNKS,
+};
+
static const struct mlxsw_sp_kvdl_part_info kvdl_parts_info[] = {
{
- .part_index = 0,
+ .part_index = MLXSW_SP_KVDL_PART_SINGLE,
.start_index = MLXSW_SP_KVDL_SINGLE_BASE,
.end_index = MLXSW_SP_KVDL_SINGLE_END,
.alloc_size = 1,
},
{
- .part_index = 1,
+ .part_index = MLXSW_SP_KVDL_PART_CHUNKS,
.start_index = MLXSW_SP_KVDL_CHUNKS_BASE,
.end_index = MLXSW_SP_KVDL_CHUNKS_END,
.alloc_size = MLXSW_SP_CHUNK_MAX,
},
{
- .part_index = 2,
+ .part_index = MLXSW_SP_KVDL_PART_LARGE_CHUNKS,
.start_index = MLXSW_SP_KVDL_LARGE_CHUNKS_BASE,
.end_index = MLXSW_SP_KVDL_LARGE_CHUNKS_END,
.alloc_size = MLXSW_SP_LARGE_CHUNK_MAX,
@@ -312,6 +318,71 @@ u64 mlxsw_sp_kvdl_occ_get(const struct mlxsw_sp *mlxsw_sp)
return occ;
}
+static struct devlink_resource_size_params mlxsw_sp_kvdl_single_size_params = {
+ .size_min = 0,
+ .size_granularity = 1,
+ .unit = DEVLINK_RESOURCE_UNIT_ENTRY,
+};
+
+static struct devlink_resource_size_params mlxsw_sp_kvdl_chunks_size_params = {
+ .size_min = 0,
+ .size_granularity = MLXSW_SP_CHUNK_MAX,
+ .unit = DEVLINK_RESOURCE_UNIT_ENTRY,
+};
+
+static struct devlink_resource_size_params mlxsw_sp_kvdl_large_chunks_size_params = {
+ .size_min = 0,
+ .size_granularity = MLXSW_SP_LARGE_CHUNK_MAX,
+ .unit = DEVLINK_RESOURCE_UNIT_ENTRY,
+};
+
+static void
+mlxsw_sp_kvdl_resource_size_params_prepare(struct devlink *devlink)
+{
+ struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
+ u32 kvdl_max_size;
+
+ kvdl_max_size = MLXSW_CORE_RES_GET(mlxsw_core, KVD_SIZE) -
+ MLXSW_CORE_RES_GET(mlxsw_core, KVD_SINGLE_MIN_SIZE) -
+ MLXSW_CORE_RES_GET(mlxsw_core, KVD_DOUBLE_MIN_SIZE);
+
+ mlxsw_sp_kvdl_single_size_params.size_max = kvdl_max_size;
+ mlxsw_sp_kvdl_chunks_size_params.size_max = kvdl_max_size;
+ mlxsw_sp_kvdl_large_chunks_size_params.size_max = kvdl_max_size;
+}
+
+int mlxsw_sp_kvdl_resources_register(struct devlink *devlink)
+{
+ int err;
+
+ mlxsw_sp_kvdl_resource_size_params_prepare(devlink);
+ err = devlink_resource_register(devlink, MLXSW_SP_RESOURCE_NAME_KVD_LINEAR_SINGLES,
+ false, MLXSW_SP_KVDL_SINGLE_SIZE,
+ MLXSW_SP_RESOURCE_KVD_LINEAR_SINGLE,
+ MLXSW_SP_RESOURCE_KVD_LINEAR,
+ &mlxsw_sp_kvdl_single_size_params,
+ NULL);
+ if (err)
+ return err;
+
+ err = devlink_resource_register(devlink, MLXSW_SP_RESOURCE_NAME_KVD_LINEAR_CHUNKS,
+ false, MLXSW_SP_KVDL_CHUNKS_SIZE,
+ MLXSW_SP_RESOURCE_KVD_LINEAR_CHUNKS,
+ MLXSW_SP_RESOURCE_KVD_LINEAR,
+ &mlxsw_sp_kvdl_chunks_size_params,
+ NULL);
+ if (err)
+ return err;
+
+ err = devlink_resource_register(devlink, MLXSW_SP_RESOURCE_NAME_KVD_LINEAR_LARGE_CHUNKS,
+ false, MLXSW_SP_KVDL_LARGE_CHUNKS_SIZE,
+ MLXSW_SP_RESOURCE_KVD_LINEAR_LARGE_CHUNKS,
+ MLXSW_SP_RESOURCE_KVD_LINEAR,
+ &mlxsw_sp_kvdl_large_chunks_size_params,
+ NULL);
+ return err;
+}
+
int mlxsw_sp_kvdl_init(struct mlxsw_sp *mlxsw_sp)
{
struct mlxsw_sp_kvdl *kvdl;
--
2.14.3
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