if_jmevar.h

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    1 /*-
    2  * Copyright (c) 2008, 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_JMEVAR_H
   31 #define _IF_JMEVAR_H
   32 
   33 #include <sys/queue.h>
   34 #include <sys/callout.h>
   35 #include <sys/taskqueue.h>
   36 
   37 /*
   38  * JMC250 supports upto 1024 descriptors and the number of
   39  * descriptors should be multiple of 16.
   40  */
   41 #define JME_TX_RING_CNT         384
   42 #define JME_RX_RING_CNT         256
   43 /*
   44  * Tx/Rx descriptor queue base should be 16bytes aligned and
   45  * should not cross 4G bytes boundary on the 64bits address
   46  * mode.
   47  */
   48 #define JME_TX_RING_ALIGN       16
   49 #define JME_RX_RING_ALIGN       16
   50 #define JME_TSO_MAXSEGSIZE      4096
   51 #define JME_TSO_MAXSIZE         (65535 + sizeof(struct ether_vlan_header))
   52 #define JME_MAXTXSEGS           32
   53 #define JME_RX_BUF_ALIGN        sizeof(uint64_t)
   54 #define JME_SSB_ALIGN           16
   55 
   56 #define JME_ADDR_LO(x)          ((uint64_t) (x) & 0xFFFFFFFF)
   57 #define JME_ADDR_HI(x)          ((uint64_t) (x) >> 32)
   58 
   59 #define JME_MSI_MESSAGES        8
   60 #define JME_MSIX_MESSAGES       8
   61 
   62 /* Water mark to kick reclaiming Tx buffers. */
   63 #define JME_TX_DESC_HIWAT       (JME_TX_RING_CNT - (((JME_TX_RING_CNT) * 3) / 10))
   64 
   65 /*
   66  * JMC250 can send 9K jumbo frame on Tx path and can receive
   67  * 65535 bytes.
   68  */
   69 #define JME_JUMBO_FRAMELEN      9216
   70 #define JME_JUMBO_MTU                                                   \
   71         (JME_JUMBO_FRAMELEN - sizeof(struct ether_vlan_header) -        \
   72          ETHER_HDR_LEN - ETHER_CRC_LEN)
   73 #define JME_MAX_MTU                                                     \
   74         (ETHER_MAX_LEN + sizeof(struct ether_vlan_header) -             \
   75          ETHER_HDR_LEN - ETHER_CRC_LEN)
   76 /*
   77  * JMC250 can't handle Tx checksum offload/TSO if frame length
   78  * is larger than its FIFO size(2K). It's also good idea to not
   79  * use jumbo frame if hardware is running at half-duplex media.
   80  * Because the jumbo frame may not fit into the Tx FIFO,
   81  * collisions make hardware fetch frame from host memory with
   82  * DMA again which in turn slows down Tx performance
   83  * significantly.
   84  */
   85 #define JME_TX_FIFO_SIZE        2000
   86 /*
   87  * JMC250 has just 4K Rx FIFO. To support jumbo frame that is
   88  * larger than 4K bytes in length, Rx FIFO threshold should be
   89  * adjusted to minimize Rx FIFO overrun.
   90  */
   91 #define JME_RX_FIFO_SIZE        4000
   92 
   93 #define JME_DESC_INC(x, y)      ((x) = ((x) + 1) % (y))
   94 
   95 #define JME_PROC_MIN            10
   96 #define JME_PROC_DEFAULT        (JME_RX_RING_CNT / 2)
   97 #define JME_PROC_MAX            (JME_RX_RING_CNT - 1)
   98 
   99 struct jme_txdesc {
  100         struct mbuf             *tx_m;
  101         bus_dmamap_t            tx_dmamap;
  102         int                     tx_ndesc;
  103         struct jme_desc         *tx_desc;
  104 };
  105 
  106 struct jme_rxdesc {
  107         struct mbuf             *rx_m;
  108         bus_dmamap_t            rx_dmamap;
  109         struct jme_desc         *rx_desc;
  110 };
  111 
  112 struct jme_chain_data{
  113         bus_dma_tag_t           jme_ring_tag;
  114         bus_dma_tag_t           jme_buffer_tag;
  115         bus_dma_tag_t           jme_ssb_tag;
  116         bus_dmamap_t            jme_ssb_map;
  117         bus_dma_tag_t           jme_tx_tag;
  118         struct jme_txdesc       jme_txdesc[JME_TX_RING_CNT];
  119         bus_dma_tag_t           jme_rx_tag;
  120         struct jme_rxdesc       jme_rxdesc[JME_RX_RING_CNT];
  121         bus_dma_tag_t           jme_tx_ring_tag;
  122         bus_dmamap_t            jme_tx_ring_map;
  123         bus_dma_tag_t           jme_rx_ring_tag;
  124         bus_dmamap_t            jme_rx_ring_map;
  125         bus_dmamap_t            jme_rx_sparemap;
  126 
  127         int                     jme_tx_prod;
  128         int                     jme_tx_cons;
  129         int                     jme_tx_cnt;
  130         int                     jme_rx_cons;
  131         int                     jme_rxlen;
  132 
  133         struct mbuf             *jme_rxhead;
  134         struct mbuf             *jme_rxtail;
  135 };
  136 
  137 struct jme_ring_data {
  138         struct jme_desc         *jme_tx_ring;
  139         bus_addr_t              jme_tx_ring_paddr;
  140         struct jme_desc         *jme_rx_ring;
  141         bus_addr_t              jme_rx_ring_paddr;
  142         struct jme_ssb          *jme_ssb_block;
  143         bus_addr_t              jme_ssb_block_paddr;
  144 };
  145 
  146 #define JME_TX_RING_ADDR(sc, i) \
  147     ((sc)->jme_rdata.jme_tx_ring_paddr + sizeof(struct jme_desc) * (i))
  148 #define JME_RX_RING_ADDR(sc, i) \
  149     ((sc)->jme_rdata.jme_rx_ring_paddr + sizeof(struct jme_desc) * (i))
  150 
  151 #define JME_TX_RING_SIZE        \
  152     (sizeof(struct jme_desc) * JME_TX_RING_CNT)
  153 #define JME_RX_RING_SIZE        \
  154     (sizeof(struct jme_desc) * JME_RX_RING_CNT)
  155 #define JME_SSB_SIZE            sizeof(struct jme_ssb)
  156 
  157 /*
  158  * Software state per device.
  159  */
  160 struct jme_softc {
  161         struct ifnet            *jme_ifp;
  162         device_t                jme_dev;
  163         device_t                jme_miibus;
  164         struct resource         *jme_res[1];
  165         struct resource_spec    *jme_res_spec;
  166         struct resource         *jme_irq[JME_MSI_MESSAGES];
  167         struct resource_spec    *jme_irq_spec;
  168         void                    *jme_intrhand[JME_MSI_MESSAGES];
  169         int                     jme_rev;
  170         int                     jme_chip_rev;
  171         int                     jme_phyaddr;
  172         uint8_t                 jme_eaddr[ETHER_ADDR_LEN];
  173         uint32_t                jme_tx_dma_size;
  174         uint32_t                jme_rx_dma_size;
  175         int                     jme_flags;
  176 #define JME_FLAG_FPGA           0x0001
  177 #define JME_FLAG_PCIE           0x0002
  178 #define JME_FLAG_PCIX           0x0003
  179 #define JME_FLAG_MSI            0x0004
  180 #define JME_FLAG_MSIX           0x0010
  181 #define JME_FLAG_PMCAP          0x0020
  182 #define JME_FLAG_FASTETH        0x0040
  183 #define JME_FLAG_NOJUMBO        0x0080
  184 #define JME_FLAG_DETACH         0x4000
  185 #define JME_FLAG_LINK           0x8000
  186 
  187         struct callout          jme_tick_ch;
  188         struct jme_chain_data   jme_cdata;
  189         struct jme_ring_data    jme_rdata;
  190         int                     jme_if_flags;
  191         int                     jme_watchdog_timer;
  192         uint32_t                jme_txcsr;
  193         uint32_t                jme_rxcsr;
  194         int                     jme_process_limit;
  195         int                     jme_tx_coal_to;
  196         int                     jme_tx_coal_pkt;
  197         int                     jme_rx_coal_to;
  198         int                     jme_rx_coal_pkt;
  199         volatile int            jme_morework;
  200 
  201         struct task             jme_int_task;
  202         struct task             jme_tx_task;
  203         struct task             jme_link_task;
  204         struct taskqueue        *jme_tq;
  205         struct mtx              jme_mtx;
  206 };
  207 
  208 /* Register access macros. */
  209 #define CSR_WRITE_4(_sc, reg, val)      \
  210         bus_write_4((_sc)->jme_res[0], (reg), (val))
  211 #define CSR_READ_4(_sc, reg)            \
  212         bus_read_4((_sc)->jme_res[0], (reg))
  213 
  214 #define JME_LOCK(_sc)           mtx_lock(&(_sc)->jme_mtx)
  215 #define JME_UNLOCK(_sc)         mtx_unlock(&(_sc)->jme_mtx)
  216 #define JME_LOCK_ASSERT(_sc)    mtx_assert(&(_sc)->jme_mtx, MA_OWNED)
  217 
  218 #define JME_MAXERR      5
  219 
  220 #define JME_RXCHAIN_RESET(_sc)                                          \
  221 do {                                                                    \
  222         (_sc)->jme_cdata.jme_rxhead = NULL;                             \
  223         (_sc)->jme_cdata.jme_rxtail = NULL;                             \
  224         (_sc)->jme_cdata.jme_rxlen = 0;                                 \
  225 } while (0)
  226 
  227 #define JME_TX_TIMEOUT          5
  228 #define JME_TIMEOUT             1000
  229 #define JME_PHY_TIMEOUT         1000
  230 #define JME_EEPROM_TIMEOUT      1000
  231 
  232 #endif

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FreeBSD/Linux Kernel Cross Reference sys/dev/jme/if_jmevar.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/jme/if_jmevar.h