iwlwifi: support new queue allocation command

Newer firmware versions will support a new queue allocation
command, in order to deal with MLD where multiple stations
are used for a single queue. Add support for the new command.

This requires some refactoring of the queue allocation API,
which now gets
 - the station mask instead of the station ID
 - the flags without the "enable" flag, since that's no longer
   used in the new API

Additionally, this new API now requires that we remove queues
before removing a station, the firmware will no longer do that
internally. Also add support for that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220210181930.acbf22ac2b66.I2bf38578c5ca1f7ffb2011a782f772db92fc4965@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

1 files changed, 56 insertions, 0 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/datapath.h b/drivers/net/wireless/intel/iwlwifi/fw/api/datapath.h
index 99235baab85d..d268a9cba5ce 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/api/datapath.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/api/datapath.h
@@ -65,6 +65,13 @@ enum iwl_data_path_subcmd_ids {
 	RX_BAID_ALLOCATION_CONFIG_CMD = 0x16,
 
 	/**
+	 * @SCD_QUEUE_CONFIG_CMD: new scheduler queue allocation/config/removal
+	 *	command, uses &struct iwl_scd_queue_cfg_cmd and the response
+	 *	is (same as before) &struct iwl_tx_queue_cfg_rsp.
+	 */
+	SCD_QUEUE_CONFIG_CMD = 0x17,
+
+	/**
 	 * @MONITOR_NOTIF: Datapath monitoring notification, using
 	 *	&struct iwl_datapath_monitor_notif
 	 */
@@ -334,4 +341,53 @@ struct iwl_rx_baid_cfg_resp {
 	__le32 baid;
 }; /* RX_BAID_ALLOCATION_RESPONSE_API_S_VER_1 */
 
+/**
+ * enum iwl_scd_queue_cfg_operation - scheduler queue operation
+ * @IWL_SCD_QUEUE_ADD: allocate a new queue
+ * @IWL_SCD_QUEUE_REMOVE: remove a queue
+ * @IWL_SCD_QUEUE_MODIFY: modify a queue
+ */
+enum iwl_scd_queue_cfg_operation {
+	IWL_SCD_QUEUE_ADD = 0,
+	IWL_SCD_QUEUE_REMOVE = 1,
+	IWL_SCD_QUEUE_MODIFY = 2,
+};
+
+/**
+ * struct iwl_scd_queue_cfg_cmd - scheduler queue allocation command
+ * @operation: the operation, see &enum iwl_scd_queue_cfg_operation
+ * @u.add.sta_mask: station mask
+ * @u.add.tid: TID
+ * @u.add.reserved: reserved
+ * @u.add.flags: flags from &enum iwl_tx_queue_cfg_actions, except
+ *	%TX_QUEUE_CFG_ENABLE_QUEUE is not valid
+ * @u.add.cb_size: size code
+ * @u.add.bc_dram_addr: byte-count table IOVA
+ * @u.add.tfdq_dram_addr: TFD queue IOVA
+ * @u.remove.queue: queue ID for removal
+ * @u.modify.sta_mask: new station mask for modify
+ * @u.modify.queue: queue ID to modify
+ */
+struct iwl_scd_queue_cfg_cmd {
+	__le32 operation;
+	union {
+		struct {
+			__le32 sta_mask;
+			u8 tid;
+			u8 reserved[3];
+			__le32 flags;
+			__le32 cb_size;
+			__le64 bc_dram_addr;
+			__le64 tfdq_dram_addr;
+		} __packed add; /* TX_QUEUE_CFG_CMD_ADD_API_S_VER_1 */
+		struct {
+			__le32 queue;
+		} __packed remove; /* TX_QUEUE_CFG_CMD_REMOVE_API_S_VER_1 */
+		struct {
+			__le32 sta_mask;
+			__le32 queue;
+		} __packed modify; /* TX_QUEUE_CFG_CMD_MODIFY_API_S_VER_1 */
+	} __packed u; /* TX_QUEUE_CFG_CMD_OPERATION_API_U_VER_1 */
+} __packed; /* TX_QUEUE_CFG_CMD_API_S_VER_3 */
+
 #endif /* __iwl_fw_api_datapath_h__ */