dpni.h (6aa90fe2d96745b63d4ccc74c0c37b90d31b699e) dpni.h (f395b69f40f580491ef56f2395a98e3189baa53c)
1/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
2/* Copyright 2013-2016 Freescale Semiconductor Inc.
3 * Copyright 2016 NXP
4 */
5#ifndef __FSL_DPNI_H
6#define __FSL_DPNI_H
7
8#include "dpkg.h"

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509 */
510#define DPNI_LINK_OPT_PAUSE 0x0000000000000004ULL
511/**
512 * Enable a-symmetric pause frames
513 */
514#define DPNI_LINK_OPT_ASYM_PAUSE 0x0000000000000008ULL
515
516/**
1/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
2/* Copyright 2013-2016 Freescale Semiconductor Inc.
3 * Copyright 2016 NXP
4 */
5#ifndef __FSL_DPNI_H
6#define __FSL_DPNI_H
7
8#include "dpkg.h"

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509 */
510#define DPNI_LINK_OPT_PAUSE 0x0000000000000004ULL
511/**
512 * Enable a-symmetric pause frames
513 */
514#define DPNI_LINK_OPT_ASYM_PAUSE 0x0000000000000008ULL
515
516/**
517 * Enable priority flow control pause frames
518 */
519#define DPNI_LINK_OPT_PFC_PAUSE 0x0000000000000010ULL
520
521/**
517 * struct - Structure representing DPNI link configuration
518 * @rate: Rate
519 * @options: Mask of available options; use 'DPNI_LINK_OPT_<X>' values
520 */
521struct dpni_link_cfg {
522 u32 rate;
523 u64 options;
524};

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873 * QUEUE_INDEX is ignored if this type is used.
874 */
875enum dpni_congestion_point {
876 DPNI_CP_QUEUE,
877 DPNI_CP_GROUP,
878};
879
880/**
522 * struct - Structure representing DPNI link configuration
523 * @rate: Rate
524 * @options: Mask of available options; use 'DPNI_LINK_OPT_<X>' values
525 */
526struct dpni_link_cfg {
527 u32 rate;
528 u64 options;
529};

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878 * QUEUE_INDEX is ignored if this type is used.
879 */
880enum dpni_congestion_point {
881 DPNI_CP_QUEUE,
882 DPNI_CP_GROUP,
883};
884
885/**
886 * struct dpni_dest_cfg - Structure representing DPNI destination parameters
887 * @dest_type: Destination type
888 * @dest_id: Either DPIO ID or DPCON ID, depending on the destination type
889 * @priority: Priority selection within the DPIO or DPCON channel; valid
890 * values are 0-1 or 0-7, depending on the number of priorities
891 * in that channel; not relevant for 'DPNI_DEST_NONE' option
892 */
893struct dpni_dest_cfg {
894 enum dpni_dest dest_type;
895 int dest_id;
896 u8 priority;
897};
898
899/* DPNI congestion options */
900
901/**
902 * This congestion will trigger flow control or priority flow control.
903 * This will have effect only if flow control is enabled with
904 * dpni_set_link_cfg().
905 */
906#define DPNI_CONG_OPT_FLOW_CONTROL 0x00000040
907
908/**
909 * struct dpni_congestion_notification_cfg - congestion notification
910 * configuration
911 * @units: Units type
912 * @threshold_entry: Above this threshold we enter a congestion state.
913 * set it to '0' to disable it
914 * @threshold_exit: Below this threshold we exit the congestion state.
915 * @message_ctx: The context that will be part of the CSCN message
916 * @message_iova: I/O virtual address (must be in DMA-able memory),
917 * must be 16B aligned; valid only if 'DPNI_CONG_OPT_WRITE_MEM_<X>'
918 * is contained in 'options'
919 * @dest_cfg: CSCN can be send to either DPIO or DPCON WQ channel
920 * @notification_mode: Mask of available options; use 'DPNI_CONG_OPT_<X>' values
921 */
922
923struct dpni_congestion_notification_cfg {
924 enum dpni_congestion_unit units;
925 u32 threshold_entry;
926 u32 threshold_exit;
927 u64 message_ctx;
928 u64 message_iova;
929 struct dpni_dest_cfg dest_cfg;
930 u16 notification_mode;
931};
932
933int dpni_set_congestion_notification(
934 struct fsl_mc_io *mc_io,
935 u32 cmd_flags,
936 u16 token,
937 enum dpni_queue_type qtype,
938 u8 tc_id,
939 const struct dpni_congestion_notification_cfg *cfg);
940
941/**
881 * struct dpni_taildrop - Structure representing the taildrop
882 * @enable: Indicates whether the taildrop is active or not.
883 * @units: Indicates the unit of THRESHOLD. Queue taildrop only supports
884 * byte units, this field is ignored and assumed = 0 if
885 * CONGESTION_POINT is 0.
886 * @threshold: Threshold value, in units identified by UNITS field. Value 0
887 * cannot be used as a valid taildrop threshold, THRESHOLD must
888 * be > 0 if the taildrop is enabled.

--- 117 unchanged lines hidden --- 		942 * struct dpni_taildrop - Structure representing the taildrop
943 * @enable: Indicates whether the taildrop is active or not.
944 * @units: Indicates the unit of THRESHOLD. Queue taildrop only supports
945 * byte units, this field is ignored and assumed = 0 if
946 * CONGESTION_POINT is 0.
947 * @threshold: Threshold value, in units identified by UNITS field. Value 0
948 * cannot be used as a valid taildrop threshold, THRESHOLD must
949 * be > 0 if the taildrop is enabled.

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