diff options
Diffstat (limited to 'drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.h')
| -rw-r--r-- | drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.h | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.h b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.h new file mode 100644 index 0000000..63cc3475 --- /dev/null +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_ceetm.h @@ -0,0 +1,237 @@ +/* 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_ETH_CEETM_H +#define __DPAA_ETH_CEETM_H + +#include <net/pkt_sched.h> +#include <net/pkt_cls.h> +#include <net/netlink.h> +#include <lnxwrp_fm.h> + +#include "mac.h" +#include "dpaa_eth_common.h" + +/* Mask to determine the sub-portal id from a channel number */ +#define CHANNEL_SP_MASK 0x1f +/* The number of the last channel that services DCP0, connected to FMan 0. + * Value validated for B4 and T series platforms. + */ +#define DCP0_MAX_CHANNEL 0x80f +/* A2V=1 - field A2 is valid + * A0V=1 - field A0 is valid - enables frame confirmation + * OVOM=1 - override operation mode bits with values from A2 + * EBD=1 - external buffers are deallocated at the end of the FMan flow + * NL=0 - the BMI releases all the internal buffers + */ +#define CEETM_CONTEXT_A 0x1a00000080000000 +/* The ratio between the superior and inferior congestion state thresholds. The + * lower threshold is set to 7/8 of the superior one (as the default for WQ + * scheduling). + */ +#define CEETM_CCGR_RATIO 0.875 +/* For functional purposes, there are num_tx_queues pfifo qdiscs through which + * frames reach the driver. Their handles start from 1:21. Handles 1:1 to 1:20 + * are reserved for the maximum 32 CEETM channels (majors and minors are in + * hex). + */ +#define PFIFO_MIN_OFFSET 0x21 + +/* A maximum of 8 CQs can be linked to a CQ channel or to a WBFS scheduler. */ +#define CEETM_MAX_PRIO_QCOUNT 8 +#define CEETM_MAX_WBFS_QCOUNT 8 +#define CEETM_MIN_WBFS_QCOUNT 4 + +/* The id offsets of the CQs belonging to WBFS groups (ids 8-11/15 for group A + * and/or 12-15 for group B). + */ +#define WBFS_GRP_A_OFFSET 8 +#define WBFS_GRP_B_OFFSET 12 + +#define WBFS_GRP_A 1 +#define WBFS_GRP_B 2 +#define WBFS_GRP_LARGE 3 + +enum { + TCA_CEETM_UNSPEC, + TCA_CEETM_COPT, + TCA_CEETM_QOPS, + __TCA_CEETM_MAX, +}; + +/* CEETM configuration types */ +enum { + CEETM_ROOT = 1, + CEETM_PRIO, + CEETM_WBFS +}; + +#define TCA_CEETM_MAX (__TCA_CEETM_MAX - 1) +extern const struct nla_policy ceetm_policy[TCA_CEETM_MAX + 1]; + +struct ceetm_class; +struct ceetm_qdisc_stats; +struct ceetm_class_stats; + +struct ceetm_fq { + struct qman_fq fq; + struct net_device *net_dev; + struct ceetm_class *ceetm_cls; +}; + +struct root_q { + struct Qdisc **qdiscs; + __u16 overhead; + __u32 rate; + __u32 ceil; + struct qm_ceetm_sp *sp; + struct qm_ceetm_lni *lni; + struct ceetm_qdisc_stats __percpu *qstats; +}; + +struct prio_q { + __u16 qcount; + struct ceetm_class *parent; +}; + +struct wbfs_q { + __u16 qcount; + int group_type; + struct ceetm_class *parent; + __u16 cr; + __u16 er; +}; + +struct ceetm_qdisc { + int type; /* LNI/CHNL/WBFS */ + bool shaped; + union { + struct root_q root; + struct prio_q prio; + struct wbfs_q wbfs; + }; + struct Qdisc_class_hash clhash; + struct tcf_proto *filter_list; /* qdisc attached filters */ +}; + +/* CEETM Qdisc configuration parameters */ +struct tc_ceetm_qopt { + __u32 type; + __u16 shaped; + __u16 qcount; + __u16 overhead; + __u32 rate; + __u32 ceil; + __u16 cr; + __u16 er; + __u8 qweight[CEETM_MAX_WBFS_QCOUNT]; +}; + +struct root_c { + unsigned int rate; + unsigned int ceil; + unsigned int tbl; + bool wbfs_grp_a; + bool wbfs_grp_b; + bool wbfs_grp_large; + struct Qdisc *child; + struct qm_ceetm_channel *ch; +}; + +struct prio_c { + bool cr; + bool er; + struct ceetm_fq *fq; /* Hardware FQ instance Handle */ + struct qm_ceetm_lfq *lfq; + struct qm_ceetm_cq *cq; /* Hardware Class Queue instance Handle */ + struct qm_ceetm_ccg *ccg; + /* only one wbfs can be linked to one priority CQ */ + struct Qdisc *child; + struct ceetm_class_stats __percpu *cstats; +}; + +struct wbfs_c { + __u8 weight; /* The weight of the class between 1 and 248 */ + struct ceetm_fq *fq; /* Hardware FQ instance Handle */ + struct qm_ceetm_lfq *lfq; + struct qm_ceetm_cq *cq; /* Hardware Class Queue instance Handle */ + struct qm_ceetm_ccg *ccg; + struct ceetm_class_stats __percpu *cstats; +}; + +struct ceetm_class { + struct Qdisc_class_common common; + int refcnt; /* usage count of this class */ + struct tcf_proto *filter_list; /* class attached filters */ + struct Qdisc *parent; + bool shaped; + int type; /* ROOT/PRIO/WBFS */ + union { + struct root_c root; + struct prio_c prio; + struct wbfs_c wbfs; + }; +}; + +/* CEETM Class configuration parameters */ +struct tc_ceetm_copt { + __u32 type; + __u16 shaped; + __u32 rate; + __u32 ceil; + __u16 tbl; + __u16 cr; + __u16 er; + __u8 weight; +}; + +/* CEETM stats */ +struct ceetm_qdisc_stats { + __u32 drops; +}; + +struct ceetm_class_stats { + /* Software counters */ + struct gnet_stats_basic_packed bstats; + __u32 ern_drop_count; + __u32 congested_count; +}; + +struct tc_ceetm_xstats { + __u32 ern_drop_count; + __u32 congested_count; + /* Hardware counters */ + __u64 frame_count; + __u64 byte_count; +}; + +int __hot ceetm_tx(struct sk_buff *skb, struct net_device *net_dev); +#endif |