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/* Copyright 2008 - 2016 Freescale Semiconductor Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __DPAA_H
#define __DPAA_H
#include <linux/netdevice.h>
#include <soc/fsl/qman.h>
#include <soc/fsl/bman.h>
#include "fman.h"
#include "mac.h"
#define DPAA_ETH_TXQ_NUM NR_CPUS
#define DPAA_BPS_NUM 3 /* number of bpools per interface */
/* More detailed FQ types - used for fine-grained WQ assignments */
enum dpaa_fq_type {
FQ_TYPE_RX_DEFAULT = 1, /* Rx Default FQs */
FQ_TYPE_RX_ERROR, /* Rx Error FQs */
FQ_TYPE_TX, /* "Real" Tx FQs */
FQ_TYPE_TX_CONFIRM, /* Tx default Conf FQ (actually an Rx FQ) */
FQ_TYPE_TX_CONF_MQ, /* Tx conf FQs (one for each Tx FQ) */
FQ_TYPE_TX_ERROR, /* Tx Error FQs (these are actually Rx FQs) */
};
struct dpaa_fq {
struct qman_fq fq_base;
struct list_head list;
struct net_device *net_dev;
bool init;
u32 fqid;
u32 flags;
u16 channel;
u8 wq;
enum dpaa_fq_type fq_type;
};
struct dpaa_fq_cbs {
struct qman_fq rx_defq;
struct qman_fq tx_defq;
struct qman_fq rx_errq;
struct qman_fq tx_errq;
struct qman_fq egress_ern;
};
struct dpaa_bp {
/* device used in the DMA mapping operations */
struct device *dev;
/* current number of buffers in the buffer pool alloted to each CPU */
int __percpu *percpu_count;
/* all buffers allocated for this pool have this raw size */
size_t raw_size;
/* all buffers in this pool have this same usable size */
size_t size;
/* the buffer pools are initialized with config_count buffers for each
* CPU; at runtime the number of buffers per CPU is constantly brought
* back to this level
*/
u16 config_count;
u8 bpid;
struct bman_pool *pool;
/* bpool can be seeded before use by this cb */
int (*seed_cb)(struct dpaa_bp *);
/* bpool can be emptied before freeing by this cb */
void (*free_buf_cb)(const struct dpaa_bp *, struct bm_buffer *);
atomic_t refs;
};
struct dpaa_rx_errors {
u64 dme; /* DMA Error */
u64 fpe; /* Frame Physical Error */
u64 fse; /* Frame Size Error */
u64 phe; /* Header Error */
};
/* Counters for QMan ERN frames - one counter per rejection code */
struct dpaa_ern_cnt {
u64 cg_tdrop; /* Congestion group taildrop */
u64 wred; /* WRED congestion */
u64 err_cond; /* Error condition */
u64 early_window; /* Order restoration, frame too early */
u64 late_window; /* Order restoration, frame too late */
u64 fq_tdrop; /* FQ taildrop */
u64 fq_retired; /* FQ is retired */
u64 orp_zero; /* ORP disabled */
};
struct dpaa_napi_portal {
struct napi_struct napi;
struct qman_portal *p;
bool down;
};
struct dpaa_percpu_priv {
struct net_device *net_dev;
struct dpaa_napi_portal np;
u64 in_interrupt;
u64 tx_confirm;
/* fragmented (non-linear) skbuffs received from the stack */
u64 tx_frag_skbuffs;
struct rtnl_link_stats64 stats;
struct dpaa_rx_errors rx_errors;
struct dpaa_ern_cnt ern_cnt;
};
struct dpaa_buffer_layout {
u16 priv_data_size;
};
struct dpaa_priv {
struct dpaa_percpu_priv __percpu *percpu_priv;
struct dpaa_bp *dpaa_bps[DPAA_BPS_NUM];
/* Store here the needed Tx headroom for convenience and speed
* (even though it can be computed based on the fields of buf_layout)
*/
u16 tx_headroom;
struct net_device *net_dev;
struct mac_device *mac_dev;
struct qman_fq *egress_fqs[DPAA_ETH_TXQ_NUM];
struct qman_fq *conf_fqs[DPAA_ETH_TXQ_NUM];
u16 channel;
struct list_head dpaa_fq_list;
u32 msg_enable; /* net_device message level */
struct {
/* All egress queues to a given net device belong to one
* (and the same) congestion group.
*/
struct qman_cgr cgr;
/* If congested, when it began. Used for performance stats. */
u32 congestion_start_jiffies;
/* Number of jiffies the Tx port was congested. */
u32 congested_jiffies;
/* Counter for the number of times the CGR
* entered congestion state
*/
u32 cgr_congested_count;
} cgr_data;
/* Use a per-port CGR for ingress traffic. */
bool use_ingress_cgr;
struct qman_cgr ingress_cgr;
struct dpaa_buffer_layout buf_layout[2];
u16 rx_headroom;
};
/* from dpaa_ethtool.c */
extern const struct ethtool_ops dpaa_ethtool_ops;
#endif /* __DPAA_H */
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