sonic-buildimage/platform/mellanox/non-upstream-patches/patches/0132-mlxsw-reg-Add-Management-DownStream-Device-Query-Reg.patch

From e46f9bfa89b8b9caced49a74db695e86e963b35d Mon Sep 17 00:00:00 2001
From: Vadim Pasternak <vadimp@nvidia.com>
Date: Mon, 3 Jan 2022 10:20:49 +0000
Subject: [PATCH] mlxsw: reg: Add Management DownStream Device Query Register

The MDDQ register allows to query the DownStream device properties.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlxsw/reg.h | 234 ++++++++++++++++++++++
 1 file changed, 234 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h
index 42169957c..d5301bd6f 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/reg.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h
@@ -10297,6 +10297,239 @@ mlxsw_reg_mgpir_unpack(char *payload, u8 *num_of_devices,
 		*num_of_slots = mlxsw_reg_mgpir_num_of_slots_get(payload);
 }
 
+/* MDDQ - Management DownStream Device Query Register
+ * --------------------------------------------------
+ * This register allows to query the DownStream device properties. The desired
+ * information is chosen upon the query_type field and is delivered by 32B
+ * of data blocks.
+ */
+#define MLXSW_REG_MDDQ_ID 0x9161
+#define MLXSW_REG_MDDQ_LEN 0x30
+
+MLXSW_REG_DEFINE(mddq, MLXSW_REG_MDDQ_ID, MLXSW_REG_MDDQ_LEN);
+
+/* reg_mddq_sie
+ * Slot info event enable.
+ * When set to '1', each change in the slot_info.provisioned / sr_valid /
+ * active / ready will generate an event.
+ * Access: RW
+ */
+MLXSW_ITEM32(reg, mddq, sie, 0x00, 31, 1);
+
+enum mlxsw_reg_mddq_query_type {
+	MLXSW_REG_MDDQ_QUERY_TYPE_SLOT_INFO = 1,
+	MLXSW_REG_MDDQ_QUERY_TYPE_DEVICE_INFO, /* If there are no devices
+						* on the slot, data_valid
+						* will be '0'.
+						*/
+	MLXSW_REG_MDDQ_QUERY_TYPE_SLOT_NAME,
+};
+
+/* reg_mddq_query_type
+ * Access: Index
+ */
+MLXSW_ITEM32(reg, mddq, query_type, 0x00, 16, 8);
+
+/* reg_mddq_slot_index
+ * Slot index. 0 is reserved.
+ * Access: Index
+ */
+MLXSW_ITEM32(reg, mddq, slot_index, 0x00, 0, 4);
+
+/* reg_mddq_response_msg_seq
+ * Response message sequential number. For a specific request, the response
+ * message sequential number is the following one. In addition, the last
+ * message should be 0.
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, mddq, response_msg_seq, 0x04, 16, 8);
+
+/* reg_mddq_request_msg_seq
+ * Request message sequential number.
+ * The first message number should be 0.
+ * Access: Index
+ */
+MLXSW_ITEM32(reg, mddq, request_msg_seq, 0x04, 0, 8);
+
+/* reg_mddq_data_valid
+ * If set, the data in the data field is valid and contain the information
+ * for the queried index.
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, mddq, data_valid, 0x08, 31, 1);
+
+/* reg_mddq_provisioned
+ * If set, the INI file is applied and the card is provisioned.
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, mddq, provisioned, 0x10, 31, 1);
+
+/* reg_mddq_sr_valid
+ * If set, Shift Register is valid (after being provisioned).
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, mddq, sr_valid, 0x10, 30, 1);
+
+enum mlxsw_reg_mddq_ready {
+	MLXSW_REG_MDDQ_READY_NOT_READY,
+	MLXSW_REG_MDDQ_READY_READY,
+	MLXSW_REG_MDDQ_READY_ERROR,
+};
+
+/* reg_mddq_lc_ready
+ * If set, the LC is powered on, matching the INI version and a new FW
+ * version can be burnt (if necessary).
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, mddq, lc_ready, 0x10, 28, 2);
+
+/* reg_mddq_active
+ * If set, the FW has completed the MDDC.device_enable command.
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, mddq, active, 0x10, 27, 1);
+
+/* reg_mddq_hw_revision
+ * Major user-configured version number of the current INI file.
+ * Valid only when active or ready are '1'.
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, mddq, hw_revision, 0x14, 16, 16);
+
+/* reg_mddq_ini_file_version
+ * User-configured version number of the current INI file.
+ * Valid only when active or lc_ready are '1'.
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, mddq, ini_file_version, 0x14, 0, 16);
+
+enum mlxsw_reg_mddq_card_type {
+	MLXSW_REG_MDDQ_CARD_TYPE_BUFFALO_4X400G,
+	MLXSW_REG_MDDQ_CARD_TYPE_BUFFALO_8X200G,
+	MLXSW_REG_MDDQ_CARD_TYPE_BUFFALO_16X100G,
+};
+
+/* reg_mddq_card_type
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, mddq, card_type, 0x18, 0, 8);
+
+static inline void
+__mlxsw_reg_mddq_pack(char *payload, u8 slot_index,
+		      enum mlxsw_reg_mddq_query_type query_type)
+{
+	MLXSW_REG_ZERO(mddq, payload);
+	mlxsw_reg_mddq_slot_index_set(payload, slot_index);
+	mlxsw_reg_mddq_query_type_set(payload, query_type);
+}
+
+static inline void
+mlxsw_reg_mddq_slot_info_pack(char *payload, u8 slot_index, bool sie)
+{
+	__mlxsw_reg_mddq_pack(payload, slot_index,
+			      MLXSW_REG_MDDQ_QUERY_TYPE_SLOT_INFO);
+	mlxsw_reg_mddq_sie_set(payload, sie);
+}
+
+static inline void
+mlxsw_reg_mddq_slot_info_unpack(const char *payload, u8 *p_slot_index,
+				bool *p_provisioned, bool *p_sr_valid,
+				enum mlxsw_reg_mddq_ready *p_lc_ready,
+				bool *p_active, u16 *p_hw_revision,
+				u16 *p_ini_file_version,
+				enum mlxsw_reg_mddq_card_type *p_card_type)
+{
+	*p_slot_index = mlxsw_reg_mddq_slot_index_get(payload);
+	*p_provisioned = mlxsw_reg_mddq_provisioned_get(payload);
+	*p_sr_valid = mlxsw_reg_mddq_sr_valid_get(payload);
+	*p_lc_ready = mlxsw_reg_mddq_lc_ready_get(payload);
+	*p_active = mlxsw_reg_mddq_active_get(payload);
+	*p_hw_revision = mlxsw_reg_mddq_hw_revision_get(payload);
+	*p_ini_file_version = mlxsw_reg_mddq_ini_file_version_get(payload);
+	*p_card_type = mlxsw_reg_mddq_card_type_get(payload);
+}
+
+/* reg_mddq_flash_owner
+ * If set, the device is the flash owner. Otherwise, a shared flash
+ * is used by this device (another device is the flash owner).
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, mddq, flash_owner, 0x10, 30, 1);
+
+/* reg_mddq_device_index
+ * Device index. The first device should number 0.
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, mddq, device_index, 0x10, 0, 8);
+
+/* reg_mddq_fw_major
+ * Major FW version number.
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, mddq, fw_major, 0x14, 16, 16);
+
+/* reg_mddq_fw_minor
+ * Minor FW version number.
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, mddq, fw_minor, 0x18, 16, 16);
+
+/* reg_mddq_fw_sub_minor
+ * Sub-minor FW version number.
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, mddq, fw_sub_minor, 0x18, 0, 16);
+
+static inline void
+mlxsw_reg_mddq_device_info_pack(char *payload, u8 slot_index,
+				u8 request_msg_seq)
+{
+	__mlxsw_reg_mddq_pack(payload, slot_index,
+			      MLXSW_REG_MDDQ_QUERY_TYPE_DEVICE_INFO);
+	mlxsw_reg_mddq_request_msg_seq_set(payload, request_msg_seq);
+}
+
+static inline void
+mlxsw_reg_mddq_device_info_unpack(const char *payload, u8 *p_response_msg_seq,
+				  bool *p_data_valid, bool *p_flash_owner,
+				  u8 *p_device_index, u16 *p_fw_major,
+				  u16 *p_fw_minor, u16 *p_fw_sub_minor)
+{
+	*p_response_msg_seq = mlxsw_reg_mddq_response_msg_seq_get(payload);
+	*p_data_valid = mlxsw_reg_mddq_data_valid_get(payload);
+	if (p_flash_owner)
+		*p_flash_owner = mlxsw_reg_mddq_flash_owner_get(payload);
+	*p_device_index = mlxsw_reg_mddq_device_index_get(payload);
+	if (p_fw_major)
+		*p_fw_major = mlxsw_reg_mddq_fw_major_get(payload);
+	if (p_fw_minor)
+		*p_fw_minor = mlxsw_reg_mddq_fw_minor_get(payload);
+	if (p_fw_sub_minor)
+		*p_fw_sub_minor = mlxsw_reg_mddq_fw_sub_minor_get(payload);
+}
+
+#define MLXSW_REG_MDDQ_SLOT_ACII_NAME_LEN 20
+
+/* reg_mddq_slot_ascii_name
+ * Slot's ASCII name.
+ * Access: RO
+ */
+MLXSW_ITEM_BUF(reg, mddq, slot_ascii_name, 0x10,
+	       MLXSW_REG_MDDQ_SLOT_ACII_NAME_LEN);
+
+static inline void
+mlxsw_reg_mddq_slot_name_pack(char *payload, u8 slot_index)
+{
+	__mlxsw_reg_mddq_pack(payload, slot_index,
+			      MLXSW_REG_MDDQ_QUERY_TYPE_SLOT_NAME);
+}
+
+static inline void
+mlxsw_reg_mddq_slot_name_unpack(const char *payload, char *slot_ascii_name)
+{
+	mlxsw_reg_mddq_slot_ascii_name_memcpy_from(payload, slot_ascii_name);
+}
+
 /* MFDE - Monitoring FW Debug Register
  * -----------------------------------
  */
@@ -11496,6 +11729,7 @@ static const struct mlxsw_reg_info *mlxsw_reg_infos[] = {
 	MLXSW_REG(mtptpt),
 	MLXSW_REG(mfgd),
 	MLXSW_REG(mgpir),
+	MLXSW_REG(mddq),
 	MLXSW_REG(mfde),
 	MLXSW_REG(tngcr),
 	MLXSW_REG(tnumt),
-- 
2.30.2