drivers/net/ldpaa_eth/ldpaa_eth.h

   1 /*
   2  * Copyright (C) 2014-2016 Freescale Semiconductor
   3  * Copyright 2017 NXP
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #ifndef __LDPAA_ETH_H
   9 #define __LDPAA_ETH_H
  10
  11 #include <linux/netdevice.h>
  12 #include <fsl-mc/fsl_mc.h>
  13 #include <fsl-mc/fsl_dpaa_fd.h>
  14 #include <fsl-mc/fsl_dprc.h>
  15 #include <fsl-mc/fsl_dpni.h>
  16 #include <fsl-mc/fsl_dpbp.h>
  17 #include <fsl-mc/fsl_dpio.h>
  18 #include <fsl-mc/fsl_qbman_portal.h>
  19 #include <fsl-mc/fsl_mc_private.h>
  20
  21
  22 enum ldpaa_eth_type {
  23         LDPAA_ETH_1G_E,
  24         LDPAA_ETH_10G_E,
  25 };
  26
  27 /* Arbitrary values for now, but we'll need to tune */
  28 #define LDPAA_ETH_NUM_BUFS              (7 * 7)
  29 #define LDPAA_ETH_REFILL_THRESH         (LDPAA_ETH_NUM_BUFS/2)
  30 #define LDPAA_ETH_RX_BUFFER_SIZE        2048
  31
  32 /* Hardware requires alignment for buffer address and length: 256-byte
  33  * for ingress, 64-byte for egress. Using 256 for both.
  34  */
  35 #define LDPAA_ETH_BUF_ALIGN             256
  36
  37 /* So far we're only accomodating a skb backpointer in the frame's
  38  * software annotation, but the hardware options are either 0 or 64.
  39  */
  40 #define LDPAA_ETH_SWA_SIZE              64
  41
  42 /* Annotation valid bits in FD FRC */
  43 #define LDPAA_FD_FRC_FASV               0x8000
  44 #define LDPAA_FD_FRC_FAEADV             0x4000
  45 #define LDPAA_FD_FRC_FAPRV              0x2000
  46 #define LDPAA_FD_FRC_FAIADV             0x1000
  47 #define LDPAA_FD_FRC_FASWOV             0x0800
  48 #define LDPAA_FD_FRC_FAICFDV            0x0400
  49
  50 /* Annotation bits in FD CTRL */
  51 #define LDPAA_FD_CTRL_ASAL              0x00020000      /* ASAL = 128 */
  52 #define LDPAA_FD_CTRL_PTA               0x00800000
  53 #define LDPAA_FD_CTRL_PTV1              0x00400000
  54
  55 /* TODO: we may want to move this and other WRIOP related defines
  56  * to a separate header
  57  */
  58 /* Frame annotation status */
  59 struct ldpaa_fas {
  60         u8 reserved;
  61         u8 ppid;
  62         __le16 ifpid;
  63         __le32 status;
  64 } __packed;
  65
  66 /* Debug frame, otherwise supposed to be discarded */
  67 #define LDPAA_ETH_FAS_DISC              0x80000000
  68 /* MACSEC frame */
  69 #define LDPAA_ETH_FAS_MS                0x40000000
  70 #define LDPAA_ETH_FAS_PTP               0x08000000
  71 /* Ethernet multicast frame */
  72 #define LDPAA_ETH_FAS_MC                0x04000000
  73 /* Ethernet broadcast frame */
  74 #define LDPAA_ETH_FAS_BC                0x02000000
  75 #define LDPAA_ETH_FAS_KSE               0x00040000
  76 #define LDPAA_ETH_FAS_EOFHE             0x00020000
  77 #define LDPAA_ETH_FAS_MNLE              0x00010000
  78 #define LDPAA_ETH_FAS_TIDE              0x00008000
  79 #define LDPAA_ETH_FAS_PIEE              0x00004000
  80 /* Frame length error */
  81 #define LDPAA_ETH_FAS_FLE               0x00002000
  82 /* Frame physical error; our favourite pastime */
  83 #define LDPAA_ETH_FAS_FPE               0x00001000
  84 #define LDPAA_ETH_FAS_PTE               0x00000080
  85 #define LDPAA_ETH_FAS_ISP               0x00000040
  86 #define LDPAA_ETH_FAS_PHE               0x00000020
  87 #define LDPAA_ETH_FAS_BLE               0x00000010
  88 /* L3 csum validation performed */
  89 #define LDPAA_ETH_FAS_L3CV              0x00000008
  90 /* L3 csum error */
  91 #define LDPAA_ETH_FAS_L3CE              0x00000004
  92 /* L4 csum validation performed */
  93 #define LDPAA_ETH_FAS_L4CV              0x00000002
  94 /* L4 csum error */
  95 #define LDPAA_ETH_FAS_L4CE              0x00000001
  96 /* These bits always signal errors */
  97 #define LDPAA_ETH_RX_ERR_MASK           (LDPAA_ETH_FAS_DISC     | \
  98                                          LDPAA_ETH_FAS_KSE      | \
  99                                          LDPAA_ETH_FAS_EOFHE    | \
 100                                          LDPAA_ETH_FAS_MNLE     | \
 101                                          LDPAA_ETH_FAS_TIDE     | \
 102                                          LDPAA_ETH_FAS_PIEE     | \
 103                                          LDPAA_ETH_FAS_FLE      | \
 104                                          LDPAA_ETH_FAS_FPE      | \
 105                                          LDPAA_ETH_FAS_PTE      | \
 106                                          LDPAA_ETH_FAS_ISP      | \
 107                                          LDPAA_ETH_FAS_PHE      | \
 108                                          LDPAA_ETH_FAS_BLE      | \
 109                                          LDPAA_ETH_FAS_L3CE     | \
 110                                          LDPAA_ETH_FAS_L4CE)
 111 /* Unsupported features in the ingress */
 112 #define LDPAA_ETH_RX_UNSUPP_MASK        LDPAA_ETH_FAS_MS
 113 /* TODO trim down the bitmask; not all of them apply to Tx-confirm */
 114 #define LDPAA_ETH_TXCONF_ERR_MASK       (LDPAA_ETH_FAS_KSE      | \
 115                                          LDPAA_ETH_FAS_EOFHE    | \
 116                                          LDPAA_ETH_FAS_MNLE     | \
 117                                          LDPAA_ETH_FAS_TIDE)
 118
 119 struct ldpaa_eth_priv {
 120         struct eth_device *net_dev;
 121         uint32_t dpmac_id;
 122         uint16_t dpmac_handle;
 123
 124         uint16_t tx_data_offset;
 125
 126         uint32_t rx_dflt_fqid;
 127         uint16_t tx_qdid;
 128         uint16_t tx_flow_id;
 129
 130         enum ldpaa_eth_type type;       /* 1G or 10G ethernet */
 131         struct phy_device *phydev;
 132 };
 133
 134 struct dprc_endpoint dpmac_endpoint;
 135 struct dprc_endpoint dpni_endpoint;
 136
 137 extern struct fsl_mc_io *dflt_mc_io;
 138 extern struct fsl_dpbp_obj *dflt_dpbp;
 139 extern struct fsl_dpio_obj *dflt_dpio;
 140 extern struct fsl_dpni_obj *dflt_dpni;
 141 extern uint16_t dflt_dprc_handle;
 142
 143 static void ldpaa_dpbp_drain_cnt(int count);
 144 static void ldpaa_dpbp_drain(void);
 145 static int ldpaa_dpbp_seed(uint16_t bpid);
 146 static void ldpaa_dpbp_free(void);
 147 static int ldpaa_dpni_setup(struct ldpaa_eth_priv *priv);
 148 static int ldpaa_dpbp_setup(void);
 149 static int ldpaa_dpni_bind(struct ldpaa_eth_priv *priv);
 150 static int ldpaa_dpmac_setup(struct ldpaa_eth_priv *priv);
 151 static int ldpaa_dpmac_bind(struct ldpaa_eth_priv *priv);
 152 #endif  /* __LDPAA_H */