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Annotation of lucent/sys/src/9/pc/f002528, revision 1.1

1.1     ! root        1: #include "u.h"
        !             2: #include "../port/lib.h"
        !             3: #include "mem.h"
        !             4: #include "dat.h"
        !             5: #include "fns.h"
        !             6: #include "../port/error.h"
        !             7: #include "io.h"
        !             8: #include "devtab.h"
        !             9: 
        !            10: #include "ether.h"
        !            11: 
        !            12: /*
        !            13:  * Driver written for the 'national pcmcia ether adapter', NE 4100.
        !            14:  * The manual says NE2000 compatible.
        !            15:  * The interface appears to be pretty well described in the National
        !            16:  * Semiconductor Local Area Network Databook (1992) as one of the
        !            17:  * AT evaluation cards.
        !            18:  *
        !            19:  * The NE2000 is really just a DP8390[12] plus a data port
        !            20:  * and a reset port.
        !            21:  */
        !            22: enum {
        !            23:        Data            = 0x10,         /* offset from I/O base of data port */
        !            24:        Misc            = 0x18,         /* offset from I/O base of miscellaneous port */
        !            25:        Reset           = 0x1f,         /* offset from I/O base of reset port */
        !            26: };
        !            27: 
        !            28: 
        !            29: int
        !            30: ne4100reset(Ctlr *ctlr)
        !            31: {
        !            32:        int i, slot;
        !            33:        uchar x, *p;
        !            34:        PCMmap *m;
        !            35: 
        !            36:        /*
        !            37:         * Set up the software configuration.
        !            38:         * Use defaults for port, irq, mem and size
        !            39:         * if not specified.
        !            40:         */
        !            41:        if(ctlr->card.port == 0)
        !            42:                ctlr->card.port = 0x320;
        !            43:        if(ctlr->card.irq == 0)
        !            44:                ctlr->card.irq = 10;
        !            45:        if(ctlr->card.irq == 2)
        !            46:                ctlr->card.irq = 9;
        !            47:        if(ctlr->card.mem == 0)
        !            48:                ctlr->card.mem = 0x4000;
        !            49:        if(ctlr->card.size == 0)
        !            50:                ctlr->card.size = 16*1024;
        !            51: 
        !            52:        ctlr->card.reset = ne4100reset;
        !            53:        ctlr->card.attach = dp8390attach;
        !            54:        ctlr->card.mode = dp8390mode;
        !            55:        ctlr->card.read = dp8390read;
        !            56:        ctlr->card.write = dp8390write;
        !            57:        ctlr->card.receive = dp8390receive;
        !            58:        ctlr->card.transmit = dp8390transmit;
        !            59:        ctlr->card.intr = dp8390intr;
        !            60:        ctlr->card.watch = dp8390watch;
        !            61:        ctlr->card.overflow = dp8390overflow;
        !            62: 
        !            63:        ctlr->card.bit16 = 1;
        !            64:        ctlr->card.dp8390 = ctlr->card.port;
        !            65:        ctlr->card.data = ctlr->card.port+Data;
        !            66: 
        !            67:        ctlr->card.tstart = HOWMANY(ctlr->card.mem, Dp8390BufSz);
        !            68:        ctlr->card.pstart = ctlr->card.tstart + HOWMANY(sizeof(Etherpkt), Dp8390BufSz);
        !            69:        ctlr->card.pstop = ctlr->card.tstart + HOWMANY(ctlr->card.size, Dp8390BufSz);
        !            70: 
        !            71:        /* see if there's a pcmcia card that looks right */
        !            72:        slot = pcmspecial("PC-NIC", &ctlr->card);
        !            73:        if(slot < 0)
        !            74:                return -1;
        !            75: 
        !            76:        /* reset ST-NIC */
        !            77:        x = inb(ctlr->card.port+Reset);
        !            78:        delay(2);
        !            79:        outb(ctlr->card.port+Reset, x);
        !            80: 
        !            81:        /* enable interrupts */
        !            82:        outb(ctlr->card.port + Misc, 1<<6);
        !            83: 
        !            84:        /* Init the (possible) chip. */
        !            85:        dp8390reset(ctlr);
        !            86: 
        !            87:        /* set the ether address */
        !            88:        m = pcmmap(slot, 0, 0x1000, 1);
        !            89:        if(m == 0)
        !            90:                return -1;
        !            91:        p = (uchar*)(KZERO|m->isa);
        !            92:        for(i = 0; i < sizeof(ctlr->ea); i++)
        !            93:                ctlr->ea[i] = p[0xff0+2*i];
        !            94:        pcmunmap(slot, m);
        !            95:        dp8390setea(ctlr);
        !            96: 
        !            97:        return 0;
        !            98: }
        !            99: 
        !           100: void
        !           101: ether4100link(void)
        !           102: {
        !           103:        addethercard("NE4100", ne4100reset);
        !           104: }

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