1/* Copyright 2008 - 2016 Freescale Semiconductor Inc.
2 *
3 * Redistribution and use in source and binary forms, with or without
4 * modification, are permitted provided that the following conditions are met:
5 *     * Redistributions of source code must retain the above copyright
6 *	 notice, this list of conditions and the following disclaimer.
7 *     * Redistributions in binary form must reproduce the above copyright
8 *	 notice, this list of conditions and the following disclaimer in the
9 *	 documentation and/or other materials provided with the distribution.
10 *     * Neither the name of Freescale Semiconductor nor the
11 *	 names of its contributors may be used to endorse or promote products
12 *	 derived from this software without specific prior written permission.
13 *
14 * ALTERNATIVELY, this software may be distributed under the terms of the
15 * GNU General Public License ("GPL") as published by the Free Software
16 * Foundation, either version 2 of that License or (at your option) any
17 * later version.
18 *
19 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
20 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
26 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef __DPAA_H
32#define __DPAA_H
33
34#include <linux/netdevice.h>
35#include <linux/refcount.h>
36#include <soc/fsl/qman.h>
37#include <soc/fsl/bman.h>
38
39#include "fman.h"
40#include "mac.h"
41#include "dpaa_eth_trace.h"
42
43/* Number of prioritised traffic classes */
44#define DPAA_TC_NUM		4
45/* Number of Tx queues per traffic class */
46#define DPAA_TC_TXQ_NUM		NR_CPUS
47/* Total number of Tx queues */
48#define DPAA_ETH_TXQ_NUM	(DPAA_TC_NUM * DPAA_TC_TXQ_NUM)
49
50/* More detailed FQ types - used for fine-grained WQ assignments */
51enum dpaa_fq_type {
52	FQ_TYPE_RX_DEFAULT = 1, /* Rx Default FQs */
53	FQ_TYPE_RX_ERROR,	/* Rx Error FQs */
54	FQ_TYPE_RX_PCD,		/* Rx Parse Classify Distribute FQs */
55	FQ_TYPE_TX,		/* "Real" Tx FQs */
56	FQ_TYPE_TX_CONFIRM,	/* Tx default Conf FQ (actually an Rx FQ) */
57	FQ_TYPE_TX_CONF_MQ,	/* Tx conf FQs (one for each Tx FQ) */
58	FQ_TYPE_TX_ERROR,	/* Tx Error FQs (these are actually Rx FQs) */
59};
60
61struct dpaa_fq {
62	struct qman_fq fq_base;
63	struct list_head list;
64	struct net_device *net_dev;
65	bool init;
66	u32 fqid;
67	u32 flags;
68	u16 channel;
69	u8 wq;
70	enum dpaa_fq_type fq_type;
71};
72
73struct dpaa_fq_cbs {
74	struct qman_fq rx_defq;
75	struct qman_fq tx_defq;
76	struct qman_fq rx_errq;
77	struct qman_fq tx_errq;
78	struct qman_fq egress_ern;
79};
80
81struct dpaa_priv;
82
83struct dpaa_bp {
84	/* used in the DMA mapping operations */
85	struct dpaa_priv *priv;
86	/* current number of buffers in the buffer pool alloted to each CPU */
87	int __percpu *percpu_count;
88	/* all buffers allocated for this pool have this raw size */
89	size_t raw_size;
90	/* all buffers in this pool have this same usable size */
91	size_t size;
92	/* the buffer pools are initialized with config_count buffers for each
93	 * CPU; at runtime the number of buffers per CPU is constantly brought
94	 * back to this level
95	 */
96	u16 config_count;
97	u8 bpid;
98	struct bman_pool *pool;
99	/* bpool can be seeded before use by this cb */
100	int (*seed_cb)(struct dpaa_bp *);
101	/* bpool can be emptied before freeing by this cb */
102	void (*free_buf_cb)(const struct dpaa_bp *, struct bm_buffer *);
103	refcount_t refs;
104};
105
106struct dpaa_rx_errors {
107	u64 dme;		/* DMA Error */
108	u64 fpe;		/* Frame Physical Error */
109	u64 fse;		/* Frame Size Error */
110	u64 phe;		/* Header Error */
111};
112
113/* Counters for QMan ERN frames - one counter per rejection code */
114struct dpaa_ern_cnt {
115	u64 cg_tdrop;		/* Congestion group taildrop */
116	u64 wred;		/* WRED congestion */
117	u64 err_cond;		/* Error condition */
118	u64 early_window;	/* Order restoration, frame too early */
119	u64 late_window;	/* Order restoration, frame too late */
120	u64 fq_tdrop;		/* FQ taildrop */
121	u64 fq_retired;		/* FQ is retired */
122	u64 orp_zero;		/* ORP disabled */
123};
124
125struct dpaa_napi_portal {
126	struct napi_struct napi;
127	struct qman_portal *p;
128	bool down;
129};
130
131struct dpaa_percpu_priv {
132	struct net_device *net_dev;
133	struct dpaa_napi_portal np;
134	u64 in_interrupt;
135	u64 tx_confirm;
136	/* fragmented (non-linear) skbuffs received from the stack */
137	u64 tx_frag_skbuffs;
138	struct rtnl_link_stats64 stats;
139	struct dpaa_rx_errors rx_errors;
140	struct dpaa_ern_cnt ern_cnt;
141};
142
143struct dpaa_buffer_layout {
144	u16 priv_data_size;
145};
146
147struct dpaa_priv {
148	struct dpaa_percpu_priv __percpu *percpu_priv;
149	struct dpaa_bp *dpaa_bp;
150	/* Store here the needed Tx headroom for convenience and speed
151	 * (even though it can be computed based on the fields of buf_layout)
152	 */
153	u16 tx_headroom;
154	struct net_device *net_dev;
155	struct mac_device *mac_dev;
156	struct device *rx_dma_dev;
157	struct device *tx_dma_dev;
158	struct qman_fq *egress_fqs[DPAA_ETH_TXQ_NUM];
159	struct qman_fq *conf_fqs[DPAA_ETH_TXQ_NUM];
160
161	u16 channel;
162	struct list_head dpaa_fq_list;
163
164	u8 num_tc;
165	bool keygen_in_use;
166	u32 msg_enable;	/* net_device message level */
167
168	struct {
169		/* All egress queues to a given net device belong to one
170		 * (and the same) congestion group.
171		 */
172		struct qman_cgr cgr;
173		/* If congested, when it began. Used for performance stats. */
174		u32 congestion_start_jiffies;
175		/* Number of jiffies the Tx port was congested. */
176		u32 congested_jiffies;
177		/* Counter for the number of times the CGR
178		 * entered congestion state
179		 */
180		u32 cgr_congested_count;
181	} cgr_data;
182	/* Use a per-port CGR for ingress traffic. */
183	bool use_ingress_cgr;
184	struct qman_cgr ingress_cgr;
185
186	struct dpaa_buffer_layout buf_layout[2];
187	u16 rx_headroom;
188
189	bool tx_tstamp; /* Tx timestamping enabled */
190	bool rx_tstamp; /* Rx timestamping enabled */
191};
192
193/* from dpaa_ethtool.c */
194extern const struct ethtool_ops dpaa_ethtool_ops;
195
196/* from dpaa_eth_sysfs.c */
197void dpaa_eth_sysfs_remove(struct device *dev);
198void dpaa_eth_sysfs_init(struct device *dev);
199#endif	/* __DPAA_H */
200