sys/dev/netif/alc/if_alcvar.h

   1 /*-
   2  * Copyright (c) 2009, Pyun YongHyeon <yongari@FreeBSD.org>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice unmodified, this list of conditions, and the following
  10  *    disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  *
  27  * $FreeBSD: src/sys/dev/alc/if_alcvar.h,v 1.1 2009/06/10 02:07:58 yongari Exp $
  28  */
  29
  30 #ifndef _IF_ALCVAR_H
  31 #define _IF_ALCVAR_H
  32
  33 #define ALC_TX_RING_CNT         256
  34 #define ALC_TX_RING_ALIGN       sizeof(struct tx_desc)
  35 #define ALC_RX_RING_CNT         256
  36 #define ALC_RX_RING_ALIGN       sizeof(struct rx_desc)
  37 #define ALC_RX_BUF_ALIGN        4
  38 #define ALC_RR_RING_CNT         ALC_RX_RING_CNT
  39 #define ALC_RR_RING_ALIGN       sizeof(struct rx_rdesc)
  40 #define ALC_CMB_ALIGN           8
  41 #define ALC_SMB_ALIGN           8
  42
  43 #define ALC_TSO_MAXSEGSIZE      4096
  44 #define ALC_TSO_MAXSIZE         (65535 + sizeof(struct ether_vlan_header))
  45 #define ALC_MAXTXSEGS           32
  46
  47 #define ALC_ADDR_LO(x)          ((uint64_t) (x) & 0xFFFFFFFF)
  48 #define ALC_ADDR_HI(x)          ((uint64_t) (x) >> 32)
  49
  50 #define ALC_DESC_INC(x, y)      ((x) = ((x) + 1) % (y))
  51
  52 /* Water mark to kick reclaiming Tx buffers. */
  53 #define ALC_TX_DESC_HIWAT       ((ALC_TX_RING_CNT * 6) / 10)
  54
  55 /*
  56  * AR816x controllers support up to 16 messages but this driver
  57  * uses single message.
  58  */
  59 #define ALC_MSI_MESSAGES        1
  60 #define ALC_MSIX_MESSAGES       1
  61
  62 #define ALC_TX_RING_SZ          \
  63         (sizeof(struct tx_desc) * ALC_TX_RING_CNT)
  64 #define ALC_RX_RING_SZ          \
  65         (sizeof(struct rx_desc) * ALC_RX_RING_CNT)
  66 #define ALC_RR_RING_SZ          \
  67         (sizeof(struct rx_rdesc) * ALC_RR_RING_CNT)
  68 #define ALC_CMB_SZ              (sizeof(struct cmb))
  69 #define ALC_SMB_SZ              (sizeof(struct smb))
  70
  71 #define ALC_PROC_MIN            16
  72 #define ALC_PROC_MAX            (ALC_RX_RING_CNT - 1)
  73 #define ALC_PROC_DEFAULT        (ALC_RX_RING_CNT / 4)
  74
  75 /*
  76  * The number of bits reserved for MSS in AR813x/AR815x controllers
  77  * are 13 bits. This limits the maximum interface MTU size in TSO
  78  * case(8191 + sizeof(struct ip) + sizeof(struct tcphdr)) as upper
  79  * stack should not generate TCP segments with MSS greater than the
  80  * limit. Also Atheros says that maximum MTU for TSO is 6KB.
  81  */
  82 #define ALC_TSO_MTU             (6 * 1024)
  83
  84
  85 struct alc_rxdesc {
  86         struct mbuf             *rx_m;
  87         bus_dmamap_t            rx_dmamap;
  88         struct rx_desc          *rx_desc;
  89 };
  90
  91 struct alc_txdesc {
  92         struct mbuf             *tx_m;
  93         bus_dmamap_t            tx_dmamap;
  94 };
  95
  96 struct alc_ring_data {
  97         struct tx_desc          *alc_tx_ring;
  98         bus_addr_t              alc_tx_ring_paddr;
  99         struct rx_desc          *alc_rx_ring;
 100         bus_addr_t              alc_rx_ring_paddr;
 101         struct rx_rdesc         *alc_rr_ring;
 102         bus_addr_t              alc_rr_ring_paddr;
 103         struct cmb              *alc_cmb;
 104         bus_addr_t              alc_cmb_paddr;
 105         struct smb              *alc_smb;
 106         bus_addr_t              alc_smb_paddr;
 107 };
 108
 109 struct alc_chain_data {
 110         bus_dma_tag_t           alc_parent_tag;
 111         bus_dma_tag_t           alc_buffer_tag;
 112         bus_dma_tag_t           alc_tx_tag;
 113         struct alc_txdesc       alc_txdesc[ALC_TX_RING_CNT];
 114         bus_dma_tag_t           alc_rx_tag;
 115         struct alc_rxdesc       alc_rxdesc[ALC_RX_RING_CNT];
 116         bus_dma_tag_t           alc_tx_ring_tag;
 117         bus_dmamap_t            alc_tx_ring_map;
 118         bus_dma_tag_t           alc_rx_ring_tag;
 119         bus_dmamap_t            alc_rx_ring_map;
 120         bus_dma_tag_t           alc_rr_ring_tag;
 121         bus_dmamap_t            alc_rr_ring_map;
 122         bus_dmamap_t            alc_rx_sparemap;
 123         bus_dma_tag_t           alc_cmb_tag;
 124         bus_dmamap_t            alc_cmb_map;
 125         bus_dma_tag_t           alc_smb_tag;
 126         bus_dmamap_t            alc_smb_map;
 127
 128         int                     alc_tx_prod;
 129         int                     alc_tx_cons;
 130         int                     alc_tx_cnt;
 131         int                     alc_rx_cons;
 132         int                     alc_rr_cons;
 133         int                     alc_rxlen;
 134
 135         struct mbuf             *alc_rxhead;
 136         struct mbuf             *alc_rxtail;
 137         struct mbuf             *alc_rxprev_tail;
 138 };
 139
 140 struct alc_hw_stats {
 141         /* Rx stats. */
 142         uint32_t rx_frames;
 143         uint32_t rx_bcast_frames;
 144         uint32_t rx_mcast_frames;
 145         uint32_t rx_pause_frames;
 146         uint32_t rx_control_frames;
 147         uint32_t rx_crcerrs;
 148         uint32_t rx_lenerrs;
 149         uint64_t rx_bytes;
 150         uint32_t rx_runts;
 151         uint32_t rx_fragments;
 152         uint32_t rx_pkts_64;
 153         uint32_t rx_pkts_65_127;
 154         uint32_t rx_pkts_128_255;
 155         uint32_t rx_pkts_256_511;
 156         uint32_t rx_pkts_512_1023;
 157         uint32_t rx_pkts_1024_1518;
 158         uint32_t rx_pkts_1519_max;
 159         uint32_t rx_pkts_truncated;
 160         uint32_t rx_fifo_oflows;
 161         uint32_t rx_rrs_errs;
 162         uint32_t rx_alignerrs;
 163         uint64_t rx_bcast_bytes;
 164         uint64_t rx_mcast_bytes;
 165         uint32_t rx_pkts_filtered;
 166         /* Tx stats. */
 167         uint32_t tx_frames;
 168         uint32_t tx_bcast_frames;
 169         uint32_t tx_mcast_frames;
 170         uint32_t tx_pause_frames;
 171         uint32_t tx_excess_defer;
 172         uint32_t tx_control_frames;
 173         uint32_t tx_deferred;
 174         uint64_t tx_bytes;
 175         uint32_t tx_pkts_64;
 176         uint32_t tx_pkts_65_127;
 177         uint32_t tx_pkts_128_255;
 178         uint32_t tx_pkts_256_511;
 179         uint32_t tx_pkts_512_1023;
 180         uint32_t tx_pkts_1024_1518;
 181         uint32_t tx_pkts_1519_max;
 182         uint32_t tx_single_colls;
 183         uint32_t tx_multi_colls;
 184         uint32_t tx_late_colls;
 185         uint32_t tx_excess_colls;
 186         uint32_t tx_abort;
 187         uint32_t tx_underrun;
 188         uint32_t tx_desc_underrun;
 189         uint32_t tx_lenerrs;
 190         uint32_t tx_pkts_truncated;
 191         uint64_t tx_bcast_bytes;
 192         uint64_t tx_mcast_bytes;
 193 };
 194
 195 struct alc_ident {
 196         uint16_t        vendorid;
 197         uint16_t        deviceid;
 198         uint32_t        max_framelen;
 199         const char      *name;
 200 };
 201
 202 /*
 203  * Software state per device.
 204  */
 205 struct alc_softc {
 206         struct arpcom           arpcom;
 207         struct ifnet            *alc_ifp;       /* points to arpcom.ac_if */
 208         device_t                alc_dev;
 209         device_t                alc_miibus;
 210         int                     alc_res_rid;
 211         struct resource         *alc_res;
 212         bus_space_handle_t      alc_res_bhand;
 213         bus_space_tag_t         alc_res_btag;
 214         int                     alc_irq_type;
 215         int                     alc_irq_rid;
 216         struct resource         *alc_irq;
 217         void                    *alc_intrhand;
 218         struct alc_ident        *alc_ident;
 219         int                     alc_rev;
 220         int                     alc_chip_rev;
 221         int                     alc_phyaddr;
 222         uint8_t                 alc_eaddr[ETHER_ADDR_LEN];
 223         uint32_t                alc_dma_rd_burst;
 224         uint32_t                alc_dma_wr_burst;
 225         uint32_t                alc_rcb;
 226         int                     alc_expcap;
 227         int                     alc_pmcap;
 228         int                     alc_flags;
 229 #define ALC_FLAG_PCIE           0x0001
 230 #define ALC_FLAG_PCIX           0x0002
 231 #define ALC_FLAG_PM             0x0010
 232 #define ALC_FLAG_FASTETHER      0x0020
 233 #define ALC_FLAG_JUMBO          0x0040
 234 #define ALC_FLAG_CMB_BUG        0x0100
 235 #define ALC_FLAG_SMB_BUG        0x0200
 236 #define ALC_FLAG_L0S            0x0400
 237 #define ALC_FLAG_L1S            0x0800
 238 #define ALC_FLAG_APS            0x1000
 239 #define ALC_FLAG_AR816X_FAMILY  0x2000
 240 #define ALC_FLAG_LINK_WAR       0x4000
 241 #define ALC_FLAG_LINK           0x8000
 242 #define ALC_FLAG_DETACH         0x10000
 243 #define ALC_FLAG_E2X00          0x20000
 244
 245         struct callout          alc_tick_ch;
 246         struct alc_hw_stats     alc_stats;
 247         struct alc_chain_data   alc_cdata;
 248         struct alc_ring_data    alc_rdata;
 249         int                     alc_if_flags;
 250         int                     alc_watchdog_timer;
 251         int                     alc_process_limit;
 252         int                     alc_int_rx_mod;
 253         int                     alc_int_tx_mod;
 254         int                     alc_buf_size;
 255 };
 256
 257 /* Register access macros. */
 258 #define CSR_WRITE_4(sc, reg, val)       \
 259         bus_space_write_4(sc->alc_res_btag, sc->alc_res_bhand, (reg), (val))
 260 #define CSR_READ_4(sc, reg)             \
 261         bus_space_read_4(sc->alc_res_btag, sc->alc_res_bhand, (reg))
 262 #define CSR_WRITE_2(sc, reg, val)       \
 263         bus_space_write_2(sc->alc_res_btag, sc->alc_res_bhand, (reg), (val))
 264 #define CSR_READ_2(sc, reg)             \
 265         bus_space_read_2(sc->alc_res_btag, sc->alc_res_bhand, (reg))
 266
 267 #define ALC_RXCHAIN_RESET(_sc)                                          \
 268 do {                                                                    \
 269         (_sc)->alc_cdata.alc_rxhead = NULL;                             \
 270         (_sc)->alc_cdata.alc_rxtail = NULL;                             \
 271         (_sc)->alc_cdata.alc_rxprev_tail = NULL;                        \
 272         (_sc)->alc_cdata.alc_rxlen = 0;                                 \
 273 } while (0)
 274
 275 #define ALC_TX_TIMEOUT          5
 276 #define ALC_RESET_TIMEOUT       100
 277 #define ALC_TIMEOUT             1000
 278 #define ALC_PHY_TIMEOUT         1000
 279
 280 #endif  /* _IF_ALCVAR_H */