if_alcvar.h

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    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  * $FreeBSD$
   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           35
   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 struct alc_rxdesc {
   85         struct mbuf             *rx_m;
   86         bus_dmamap_t            rx_dmamap;
   87         struct rx_desc          *rx_desc;
   88 };
   89 
   90 struct alc_txdesc {
   91         struct mbuf             *tx_m;
   92         bus_dmamap_t            tx_dmamap;
   93 };
   94 
   95 struct alc_ring_data {
   96         struct tx_desc          *alc_tx_ring;
   97         bus_addr_t              alc_tx_ring_paddr;
   98         struct rx_desc          *alc_rx_ring;
   99         bus_addr_t              alc_rx_ring_paddr;
  100         struct rx_rdesc         *alc_rr_ring;
  101         bus_addr_t              alc_rr_ring_paddr;
  102         struct cmb              *alc_cmb;
  103         bus_addr_t              alc_cmb_paddr;
  104         struct smb              *alc_smb;
  105         bus_addr_t              alc_smb_paddr;
  106 };
  107 
  108 struct alc_chain_data {
  109         bus_dma_tag_t           alc_parent_tag;
  110         bus_dma_tag_t           alc_buffer_tag;
  111         bus_dma_tag_t           alc_tx_tag;
  112         struct alc_txdesc       alc_txdesc[ALC_TX_RING_CNT];
  113         bus_dma_tag_t           alc_rx_tag;
  114         struct alc_rxdesc       alc_rxdesc[ALC_RX_RING_CNT];
  115         bus_dma_tag_t           alc_tx_ring_tag;
  116         bus_dmamap_t            alc_tx_ring_map;
  117         bus_dma_tag_t           alc_rx_ring_tag;
  118         bus_dmamap_t            alc_rx_ring_map;
  119         bus_dma_tag_t           alc_rr_ring_tag;
  120         bus_dmamap_t            alc_rr_ring_map;
  121         bus_dmamap_t            alc_rx_sparemap;
  122         bus_dma_tag_t           alc_cmb_tag;
  123         bus_dmamap_t            alc_cmb_map;
  124         bus_dma_tag_t           alc_smb_tag;
  125         bus_dmamap_t            alc_smb_map;
  126 
  127         int                     alc_tx_prod;
  128         int                     alc_tx_cons;
  129         int                     alc_tx_cnt;
  130         int                     alc_rx_cons;
  131         int                     alc_rr_cons;
  132         int                     alc_rxlen;
  133 
  134         struct mbuf             *alc_rxhead;
  135         struct mbuf             *alc_rxtail;
  136         struct mbuf             *alc_rxprev_tail;
  137 };
  138 
  139 struct alc_hw_stats {
  140         /* Rx stats. */
  141         uint32_t rx_frames;
  142         uint32_t rx_bcast_frames;
  143         uint32_t rx_mcast_frames;
  144         uint32_t rx_pause_frames;
  145         uint32_t rx_control_frames;
  146         uint32_t rx_crcerrs;
  147         uint32_t rx_lenerrs;
  148         uint64_t rx_bytes;
  149         uint32_t rx_runts;
  150         uint32_t rx_fragments;
  151         uint32_t rx_pkts_64;
  152         uint32_t rx_pkts_65_127;
  153         uint32_t rx_pkts_128_255;
  154         uint32_t rx_pkts_256_511;
  155         uint32_t rx_pkts_512_1023;
  156         uint32_t rx_pkts_1024_1518;
  157         uint32_t rx_pkts_1519_max;
  158         uint32_t rx_pkts_truncated;
  159         uint32_t rx_fifo_oflows;
  160         uint32_t rx_rrs_errs;
  161         uint32_t rx_alignerrs;
  162         uint64_t rx_bcast_bytes;
  163         uint64_t rx_mcast_bytes;
  164         uint32_t rx_pkts_filtered;
  165         /* Tx stats. */
  166         uint32_t tx_frames;
  167         uint32_t tx_bcast_frames;
  168         uint32_t tx_mcast_frames;
  169         uint32_t tx_pause_frames;
  170         uint32_t tx_excess_defer;
  171         uint32_t tx_control_frames;
  172         uint32_t tx_deferred;
  173         uint64_t tx_bytes;
  174         uint32_t tx_pkts_64;
  175         uint32_t tx_pkts_65_127;
  176         uint32_t tx_pkts_128_255;
  177         uint32_t tx_pkts_256_511;
  178         uint32_t tx_pkts_512_1023;
  179         uint32_t tx_pkts_1024_1518;
  180         uint32_t tx_pkts_1519_max;
  181         uint32_t tx_single_colls;
  182         uint32_t tx_multi_colls;
  183         uint32_t tx_late_colls;
  184         uint32_t tx_excess_colls;
  185         uint32_t tx_abort;
  186         uint32_t tx_underrun;
  187         uint32_t tx_desc_underrun;
  188         uint32_t tx_lenerrs;
  189         uint32_t tx_pkts_truncated;
  190         uint64_t tx_bcast_bytes;
  191         uint64_t tx_mcast_bytes;
  192 };
  193 
  194 struct alc_ident {
  195         uint16_t        vendorid;
  196         uint16_t        deviceid;
  197         uint32_t        max_framelen;
  198         const char      *name;
  199 };
  200 
  201 /*
  202  * Software state per device.
  203  */
  204 struct alc_softc {
  205         struct ifnet            *alc_ifp;
  206         device_t                alc_dev;
  207         device_t                alc_miibus;
  208         struct resource         *alc_res[1];
  209         struct resource_spec    *alc_res_spec;
  210         struct resource         *alc_irq[ALC_MSI_MESSAGES];
  211         struct resource_spec    *alc_irq_spec;
  212         void                    *alc_intrhand[ALC_MSI_MESSAGES];
  213         struct alc_ident        *alc_ident;
  214         int                     alc_rev;
  215         int                     alc_chip_rev;
  216         int                     alc_phyaddr;
  217         uint8_t                 alc_eaddr[ETHER_ADDR_LEN];
  218         uint32_t                alc_dma_rd_burst;
  219         uint32_t                alc_dma_wr_burst;
  220         uint32_t                alc_rcb;
  221         int                     alc_expcap;
  222         int                     alc_pmcap;
  223         int                     alc_flags;
  224 #define ALC_FLAG_PCIE           0x0001
  225 #define ALC_FLAG_PCIX           0x0002
  226 #define ALC_FLAG_MSI            0x0004
  227 #define ALC_FLAG_MSIX           0x0008
  228 #define ALC_FLAG_PM             0x0010
  229 #define ALC_FLAG_FASTETHER      0x0020
  230 #define ALC_FLAG_JUMBO          0x0040
  231 #define ALC_FLAG_CMB_BUG        0x0100
  232 #define ALC_FLAG_SMB_BUG        0x0200
  233 #define ALC_FLAG_L0S            0x0400
  234 #define ALC_FLAG_L1S            0x0800
  235 #define ALC_FLAG_APS            0x1000
  236 #define ALC_FLAG_AR816X_FAMILY  0x2000
  237 #define ALC_FLAG_LINK_WAR       0x4000
  238 #define ALC_FLAG_LINK           0x8000
  239 
  240         struct callout          alc_tick_ch;
  241         struct alc_hw_stats     alc_stats;
  242         struct alc_chain_data   alc_cdata;
  243         struct alc_ring_data    alc_rdata;
  244         int                     alc_if_flags;
  245         int                     alc_watchdog_timer;
  246         int                     alc_process_limit;
  247         volatile int            alc_morework;
  248         int                     alc_int_rx_mod;
  249         int                     alc_int_tx_mod;
  250         int                     alc_buf_size;
  251 
  252         struct task             alc_int_task;
  253         struct taskqueue        *alc_tq;
  254         struct mtx              alc_mtx;
  255 };
  256 
  257 /* Register access macros. */
  258 #define CSR_WRITE_4(_sc, reg, val)      \
  259         bus_write_4((_sc)->alc_res[0], (reg), (val))
  260 #define CSR_WRITE_2(_sc, reg, val)      \
  261         bus_write_2((_sc)->alc_res[0], (reg), (val))
  262 #define CSR_WRITE_1(_sc, reg, val)      \
  263         bus_write_1((_sc)->alc_res[0], (reg), (val))
  264 #define CSR_READ_2(_sc, reg)            \
  265         bus_read_2((_sc)->alc_res[0], (reg))
  266 #define CSR_READ_4(_sc, reg)            \
  267         bus_read_4((_sc)->alc_res[0], (reg))
  268 
  269 #define ALC_RXCHAIN_RESET(_sc)                                          \
  270 do {                                                                    \
  271         (_sc)->alc_cdata.alc_rxhead = NULL;                             \
  272         (_sc)->alc_cdata.alc_rxtail = NULL;                             \
  273         (_sc)->alc_cdata.alc_rxprev_tail = NULL;                        \
  274         (_sc)->alc_cdata.alc_rxlen = 0;                                 \
  275 } while (0)
  276 
  277 #define ALC_LOCK(_sc)           mtx_lock(&(_sc)->alc_mtx)
  278 #define ALC_UNLOCK(_sc)         mtx_unlock(&(_sc)->alc_mtx)
  279 #define ALC_LOCK_ASSERT(_sc)    mtx_assert(&(_sc)->alc_mtx, MA_OWNED)
  280 
  281 #define ALC_TX_TIMEOUT          5
  282 #define ALC_RESET_TIMEOUT       100
  283 #define ALC_TIMEOUT             1000
  284 #define ALC_PHY_TIMEOUT         1000
  285 
  286 #endif  /* _IF_ALCVAR_H */
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FreeBSD/Linux Kernel Cross Reference sys/dev/alc/if_alcvar.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/alc/if_alcvar.h
