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