1/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-or-later */
  2/*
  3 * Copyright 2008 - 2016 Freescale Semiconductor Inc.
  4 */
  5
  6#ifndef __DPAA_H
  7#define __DPAA_H
  8
  9#include <linux/netdevice.h>
 10#include <linux/refcount.h>
 11#include <net/xdp.h>
 12#include <soc/fsl/qman.h>
 13#include <soc/fsl/bman.h>
 14
 15#include "fman.h"
 16#include "mac.h"
 17#include "dpaa_eth_trace.h"
 18
 19/* Number of prioritised traffic classes */
 20#define DPAA_TC_NUM		4
 21/* Number of Tx queues per traffic class */
 22#define DPAA_TC_TXQ_NUM		NR_CPUS
 23/* Total number of Tx queues */
 24#define DPAA_ETH_TXQ_NUM	(DPAA_TC_NUM * DPAA_TC_TXQ_NUM)
 25
 26/* More detailed FQ types - used for fine-grained WQ assignments */
 27enum dpaa_fq_type {
 28	FQ_TYPE_RX_DEFAULT = 1, /* Rx Default FQs */
 29	FQ_TYPE_RX_ERROR,	/* Rx Error FQs */
 30	FQ_TYPE_RX_PCD,		/* Rx Parse Classify Distribute FQs */
 31	FQ_TYPE_TX,		/* "Real" Tx FQs */
 32	FQ_TYPE_TX_CONFIRM,	/* Tx default Conf FQ (actually an Rx FQ) */
 33	FQ_TYPE_TX_CONF_MQ,	/* Tx conf FQs (one for each Tx FQ) */
 34	FQ_TYPE_TX_ERROR,	/* Tx Error FQs (these are actually Rx FQs) */
 35};
 36
 37struct dpaa_fq {
 38	struct qman_fq fq_base;
 39	struct list_head list;
 40	struct net_device *net_dev;
 41	bool init;
 42	u32 fqid;
 43	u32 flags;
 44	u16 channel;
 45	u8 wq;
 46	enum dpaa_fq_type fq_type;
 47	struct xdp_rxq_info xdp_rxq;
 48};
 49
 50struct dpaa_fq_cbs {
 51	struct qman_fq rx_defq;
 52	struct qman_fq tx_defq;
 53	struct qman_fq rx_errq;
 54	struct qman_fq tx_errq;
 55	struct qman_fq egress_ern;
 56};
 57
 58struct dpaa_priv;
 59
 60struct dpaa_bp {
 61	/* used in the DMA mapping operations */
 62	struct dpaa_priv *priv;
 63	/* current number of buffers in the buffer pool alloted to each CPU */
 64	int __percpu *percpu_count;
 65	/* all buffers allocated for this pool have this raw size */
 66	size_t raw_size;
 67	/* all buffers in this pool have this same usable size */
 68	size_t size;
 69	/* the buffer pools are initialized with config_count buffers for each
 70	 * CPU; at runtime the number of buffers per CPU is constantly brought
 71	 * back to this level
 72	 */
 73	u16 config_count;
 74	u8 bpid;
 75	struct bman_pool *pool;
 76	/* bpool can be seeded before use by this cb */
 77	int (*seed_cb)(struct dpaa_bp *);
 78	/* bpool can be emptied before freeing by this cb */
 79	void (*free_buf_cb)(const struct dpaa_bp *, struct bm_buffer *);
 80	refcount_t refs;
 81};
 82
 83struct dpaa_rx_errors {
 84	u64 dme;		/* DMA Error */
 85	u64 fpe;		/* Frame Physical Error */
 86	u64 fse;		/* Frame Size Error */
 87	u64 phe;		/* Header Error */
 88};
 89
 90/* Counters for QMan ERN frames - one counter per rejection code */
 91struct dpaa_ern_cnt {
 92	u64 cg_tdrop;		/* Congestion group taildrop */
 93	u64 wred;		/* WRED congestion */
 94	u64 err_cond;		/* Error condition */
 95	u64 early_window;	/* Order restoration, frame too early */
 96	u64 late_window;	/* Order restoration, frame too late */
 97	u64 fq_tdrop;		/* FQ taildrop */
 98	u64 fq_retired;		/* FQ is retired */
 99	u64 orp_zero;		/* ORP disabled */
100};
101
102struct dpaa_napi_portal {
103	struct napi_struct napi;
104	struct qman_portal *p;
105	bool down;
106	int xdp_act;
107};
108
109struct dpaa_percpu_priv {
110	struct net_device *net_dev;
111	struct dpaa_napi_portal np;
112	u64 in_interrupt;
113	u64 tx_confirm;
114	/* fragmented (non-linear) skbuffs received from the stack */
115	u64 tx_frag_skbuffs;
116	struct rtnl_link_stats64 stats;
117	struct dpaa_rx_errors rx_errors;
118	struct dpaa_ern_cnt ern_cnt;
119};
120
121struct dpaa_buffer_layout {
122	u16 priv_data_size;
123};
124
125/* Information to be used on the Tx confirmation path. Stored just
126 * before the start of the transmit buffer. Maximum size allowed
127 * is DPAA_TX_PRIV_DATA_SIZE bytes.
128 */
129struct dpaa_eth_swbp {
130	struct sk_buff *skb;
131	struct xdp_frame *xdpf;
132};
133
134struct dpaa_priv {
135	struct dpaa_percpu_priv __percpu *percpu_priv;
136	struct dpaa_bp *dpaa_bp;
137	/* Store here the needed Tx headroom for convenience and speed
138	 * (even though it can be computed based on the fields of buf_layout)
139	 */
140	u16 tx_headroom;
141	struct net_device *net_dev;
142	struct mac_device *mac_dev;
143	struct device *rx_dma_dev;
144	struct device *tx_dma_dev;
145	struct qman_fq *egress_fqs[DPAA_ETH_TXQ_NUM];
146	struct qman_fq *conf_fqs[DPAA_ETH_TXQ_NUM];
147
148	u16 channel;
149	struct list_head dpaa_fq_list;
150
151	u8 num_tc;
152	bool keygen_in_use;
153	u32 msg_enable;	/* net_device message level */
154
155	struct {
156		/* All egress queues to a given net device belong to one
157		 * (and the same) congestion group.
158		 */
159		struct qman_cgr cgr;
160		/* If congested, when it began. Used for performance stats. */
161		u32 congestion_start_jiffies;
162		/* Number of jiffies the Tx port was congested. */
163		u32 congested_jiffies;
164		/* Counter for the number of times the CGR
165		 * entered congestion state
166		 */
167		u32 cgr_congested_count;
168	} cgr_data;
169	/* Use a per-port CGR for ingress traffic. */
170	bool use_ingress_cgr;
171	struct qman_cgr ingress_cgr;
172
173	struct dpaa_buffer_layout buf_layout[2];
174	u16 rx_headroom;
175
176	bool tx_tstamp; /* Tx timestamping enabled */
177	bool rx_tstamp; /* Rx timestamping enabled */
178
179	struct bpf_prog *xdp_prog;
180};
181
182/* from dpaa_ethtool.c */
183extern const struct ethtool_ops dpaa_ethtool_ops;
184
185/* from dpaa_eth_sysfs.c */
186void dpaa_eth_sysfs_remove(struct device *dev);
187void dpaa_eth_sysfs_init(struct device *dev);
188#endif	/* __DPAA_H */