Subject: [PATCH net-next 3/4] net: dsa: sja1105: make the AVB table dynamically reconfigurable

From: Vladimir Oltean <[email-masked]>
Date: Tue, 24 Mar 2020 00:59:23 +0200

From: Vladimir Oltean <[email-masked]>

The AVB table contains the CAS_MASTER field (to be added in the next
patch) which decides the direction of the PTP_CLK pin.

Reconfiguring this field dynamically is highly preferable to having to
reset the switch and upload a new static configuration, so we add
support for exactly that.

Signed-off-by: Vladimir Oltean <[email-masked]>
---
 drivers/net/dsa/sja1105/sja1105.h             |  2 ++
 .../net/dsa/sja1105/sja1105_dynamic_config.c  | 24 ++++++++++++++++++-
 .../net/dsa/sja1105/sja1105_static_config.c   |  4 ++--
 3 files changed, 27 insertions(+), 3 deletions(-)

diff --git a/drivers/net/dsa/sja1105/sja1105.h b/drivers/net/dsa/sja1105/sja1105.h
index 4c40f2d51a54..5bc40175ee0d 100644
--- a/drivers/net/dsa/sja1105/sja1105.h
+++ b/drivers/net/dsa/sja1105/sja1105.h
@@ -214,5 +214,7 @@ size_t sja1105_vlan_lookup_entry_packing(void *buf, void *entry_ptr,
 					 enum packing_op op);
 size_t sja1105pqrs_mac_config_entry_packing(void *buf, void *entry_ptr,
 					    enum packing_op op);
+size_t sja1105pqrs_avb_params_entry_packing(void *buf, void *entry_ptr,
+					    enum packing_op op);
 
 #endif
diff --git a/drivers/net/dsa/sja1105/sja1105_dynamic_config.c b/drivers/net/dsa/sja1105/sja1105_dynamic_config.c
index 25381bd65ed7..bf9b36ff35bf 100644
--- a/drivers/net/dsa/sja1105/sja1105_dynamic_config.c
+++ b/drivers/net/dsa/sja1105/sja1105_dynamic_config.c
@@ -124,6 +124,9 @@
 #define SJA1105ET_SIZE_GENERAL_PARAMS_DYN_CMD			\
 	SJA1105_SIZE_DYN_CMD
 
+#define SJA1105PQRS_SIZE_AVB_PARAMS_DYN_CMD			\
+	(SJA1105_SIZE_DYN_CMD + SJA1105PQRS_SIZE_AVB_PARAMS_ENTRY)
+
 #define SJA1105_MAX_DYN_CMD_SIZE				\
 	SJA1105PQRS_SIZE_MAC_CONFIG_DYN_CMD
 
@@ -481,6 +484,18 @@ sja1105et_general_params_entry_packing(void *buf, void *entry_ptr,
 	return 0;
 }
 
+static void
+sja1105pqrs_avb_params_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
+				   enum packing_op op)
+{
+	u8 *p = buf + SJA1105PQRS_SIZE_AVB_PARAMS_ENTRY;
+	const int size = SJA1105_SIZE_DYN_CMD;
+
+	sja1105_packing(p, &cmd->valid,   31, 31, size, op);
+	sja1105_packing(p, &cmd->errors,  30, 30, size, op);
+	sja1105_packing(p, &cmd->rdwrset, 29, 29, size, op);
+}
+
 #define OP_READ		BIT(0)
 #define OP_WRITE	BIT(1)
 #define OP_DEL		BIT(2)
@@ -610,7 +625,14 @@ struct sja1105_dynamic_table_ops sja1105pqrs_dyn_ops[BLK_IDX_MAX_DYN] = {
 		.addr = 0x38,
 	},
 	[BLK_IDX_L2_FORWARDING_PARAMS] = {0},
-	[BLK_IDX_AVB_PARAMS] = {0},
+	[BLK_IDX_AVB_PARAMS] = {
+		.entry_packing = sja1105pqrs_avb_params_entry_packing,
+		.cmd_packing = sja1105pqrs_avb_params_cmd_packing,
+		.max_entry_count = SJA1105_MAX_AVB_PARAMS_COUNT,
+		.access = (OP_READ | OP_WRITE),
+		.packed_size = SJA1105PQRS_SIZE_AVB_PARAMS_DYN_CMD,
+		.addr = 0x8003,
+	},
 	[BLK_IDX_GENERAL_PARAMS] = {
 		.entry_packing = sja1105et_general_params_entry_packing,
 		.cmd_packing = sja1105et_general_params_cmd_packing,
diff --git a/drivers/net/dsa/sja1105/sja1105_static_config.c b/drivers/net/dsa/sja1105/sja1105_static_config.c
index 63d2311817c4..fccc9c4d6b35 100644
--- a/drivers/net/dsa/sja1105/sja1105_static_config.c
+++ b/drivers/net/dsa/sja1105/sja1105_static_config.c
@@ -102,8 +102,8 @@ static size_t sja1105et_avb_params_entry_packing(void *buf, void *entry_ptr,
 	return size;
 }
 
-static size_t sja1105pqrs_avb_params_entry_packing(void *buf, void *entry_ptr,
-						   enum packing_op op)
+size_t sja1105pqrs_avb_params_entry_packing(void *buf, void *entry_ptr,
+					    enum packing_op op)
 {
 	const size_t size = SJA1105PQRS_SIZE_AVB_PARAMS_ENTRY;
 	struct sja1105_avb_params_entry *entry = entry_ptr;
-- 
2.17.1