1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 1999 - 2018 Intel Corporation. */
10  * ixgbe_dcb_config_rx_arbiter_82599 - Config Rx Data arbiter
14  * @bwg_id: bandwidth grouping indexed by traffic class
15  * @prio_type: priority type indexed by traffic class
16  * @prio_tc: priority to tc assignments indexed by priority
27 	u32    reg           = 0;  in ixgbe_dcb_config_rx_arbiter_82599()
28 	u32    credit_refill = 0;  in ixgbe_dcb_config_rx_arbiter_82599()
29 	u32    credit_max    = 0;  in ixgbe_dcb_config_rx_arbiter_82599()
30 	u8     i             = 0;  in ixgbe_dcb_config_rx_arbiter_82599()
40 	reg = 0;  in ixgbe_dcb_config_rx_arbiter_82599()
41 	for (i = 0; i < MAX_USER_PRIORITY; i++)  in ixgbe_dcb_config_rx_arbiter_82599()
46 	for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {  in ixgbe_dcb_config_rx_arbiter_82599()
66 	return 0;  in ixgbe_dcb_config_rx_arbiter_82599()
70  * ixgbe_dcb_config_tx_desc_arbiter_82599 - Config Tx Desc. arbiter
74  * @bwg_id: bandwidth grouping indexed by traffic class
75  * @prio_type: priority type indexed by traffic class
88 	/* Clear the per-Tx queue credits; we use per-TC instead */  in ixgbe_dcb_config_tx_desc_arbiter_82599()
89 	for (i = 0; i < 128; i++) {  in ixgbe_dcb_config_tx_desc_arbiter_82599()
91 		IXGBE_WRITE_REG(hw, IXGBE_RTTDT1C, 0);  in ixgbe_dcb_config_tx_desc_arbiter_82599()
95 	for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {  in ixgbe_dcb_config_tx_desc_arbiter_82599()
117 	return 0;  in ixgbe_dcb_config_tx_desc_arbiter_82599()
121  * ixgbe_dcb_config_tx_data_arbiter_82599 - Config Tx Data arbiter
125  * @bwg_id: bandwidth grouping indexed by traffic class
126  * @prio_type: priority type indexed by traffic class
127  * @prio_tc: priority to tc assignments indexed by priority
151 	reg = 0;  in ixgbe_dcb_config_tx_data_arbiter_82599()
152 	for (i = 0; i < MAX_USER_PRIORITY; i++)  in ixgbe_dcb_config_tx_data_arbiter_82599()
157 	for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {  in ixgbe_dcb_config_tx_data_arbiter_82599()
179 	return 0;  in ixgbe_dcb_config_tx_data_arbiter_82599()
183  * ixgbe_dcb_config_pfc_82599 - Configure priority flow control
186  * @prio_tc: priority to tc assignments indexed by priority
193 	u8 max_tc = 0;  in ixgbe_dcb_config_pfc_82599()
209 	if (hw->mac.type >= ixgbe_mac_X540)  in ixgbe_dcb_config_pfc_82599()
217 	for (i = 0; i < MAX_USER_PRIORITY; i++) {  in ixgbe_dcb_config_pfc_82599()
224 	for (i = 0; i <= max_tc; i++) {  in ixgbe_dcb_config_pfc_82599()
225 		int enabled = 0;  in ixgbe_dcb_config_pfc_82599()
227 		for (j = 0; j < MAX_USER_PRIORITY; j++) {  in ixgbe_dcb_config_pfc_82599()
235 			reg = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN;  in ixgbe_dcb_config_pfc_82599()
236 			fcrtl = (hw->fc.low_water[i] << 10) | IXGBE_FCRTL_XONE;  in ixgbe_dcb_config_pfc_82599()
241 			 * to the Rx packet buffer size - 24KB.  This allows  in ixgbe_dcb_config_pfc_82599()
245 			reg = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i)) - 24576;  in ixgbe_dcb_config_pfc_82599()
246 			IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), 0);  in ixgbe_dcb_config_pfc_82599()
253 		IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), 0);  in ixgbe_dcb_config_pfc_82599()
254 		IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(i), 0);  in ixgbe_dcb_config_pfc_82599()
258 	reg = hw->fc.pause_time * 0x00010001;  in ixgbe_dcb_config_pfc_82599()
259 	for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++)  in ixgbe_dcb_config_pfc_82599()
263 	IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2);  in ixgbe_dcb_config_pfc_82599()
265 	return 0;  in ixgbe_dcb_config_pfc_82599()
269  * ixgbe_dcb_config_tc_stats_82599 - Config traffic class statistics
277 	u32 reg = 0;  in ixgbe_dcb_config_tc_stats_82599()
278 	u8  i   = 0;  in ixgbe_dcb_config_tc_stats_82599()
286 	for (i = 0; i < 32; i++) {  in ixgbe_dcb_config_tc_stats_82599()
287 		reg = 0x01010101 * (i / 4);  in ixgbe_dcb_config_tc_stats_82599()
295 	 * Tx queues are allocated non-uniformly to TCs:  in ixgbe_dcb_config_tc_stats_82599()
298 	for (i = 0; i < 32; i++) {  in ixgbe_dcb_config_tc_stats_82599()
300 			reg = 0x00000000;  in ixgbe_dcb_config_tc_stats_82599()
302 			reg = 0x01010101;  in ixgbe_dcb_config_tc_stats_82599()
304 			reg = 0x02020202;  in ixgbe_dcb_config_tc_stats_82599()
306 			reg = 0x03030303;  in ixgbe_dcb_config_tc_stats_82599()
308 			reg = 0x04040404;  in ixgbe_dcb_config_tc_stats_82599()
310 			reg = 0x05050505;  in ixgbe_dcb_config_tc_stats_82599()
312 			reg = 0x06060606;  in ixgbe_dcb_config_tc_stats_82599()
314 			reg = 0x07070707;  in ixgbe_dcb_config_tc_stats_82599()
318 	return 0;  in ixgbe_dcb_config_tc_stats_82599()
322  * ixgbe_dcb_hw_config_82599 - Configure and enable DCB
327  * @bwg_id: bandwidth grouping indexed by traffic class
328  * @prio_type: priority type indexed by traffic class
329  * @prio_tc: priority to tc assignments indexed by priority
345 	return 0;  in ixgbe_dcb_hw_config_82599()