[mirror_qemu.git] / hw / ne2000.c

/*
 * QEMU NE2000 emulation
 * 
 * Copyright (c) 2003-2004 Fabrice Bellard
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#include "vl.h"

/* debug NE2000 card */
//#define DEBUG_NE2000

#define MAX_ETH_FRAME_SIZE 1514

#define E8390_CMD	0x00  /* The command register (for all pages) */
/* Page 0 register offsets. */
#define EN0_CLDALO	0x01	/* Low byte of current local dma addr  RD */
#define EN0_STARTPG	0x01	/* Starting page of ring bfr WR */
#define EN0_CLDAHI	0x02	/* High byte of current local dma addr  RD */
#define EN0_STOPPG	0x02	/* Ending page +1 of ring bfr WR */
#define EN0_BOUNDARY	0x03	/* Boundary page of ring bfr RD WR */
#define EN0_TSR		0x04	/* Transmit status reg RD */
#define EN0_TPSR	0x04	/* Transmit starting page WR */
#define EN0_NCR		0x05	/* Number of collision reg RD */
#define EN0_TCNTLO	0x05	/* Low  byte of tx byte count WR */
#define EN0_FIFO	0x06	/* FIFO RD */
#define EN0_TCNTHI	0x06	/* High byte of tx byte count WR */
#define EN0_ISR		0x07	/* Interrupt status reg RD WR */
#define EN0_CRDALO	0x08	/* low byte of current remote dma address RD */
#define EN0_RSARLO	0x08	/* Remote start address reg 0 */
#define EN0_CRDAHI	0x09	/* high byte, current remote dma address RD */
#define EN0_RSARHI	0x09	/* Remote start address reg 1 */
#define EN0_RCNTLO	0x0a	/* Remote byte count reg WR */
#define EN0_RCNTHI	0x0b	/* Remote byte count reg WR */
#define EN0_RSR		0x0c	/* rx status reg RD */
#define EN0_RXCR	0x0c	/* RX configuration reg WR */
#define EN0_TXCR	0x0d	/* TX configuration reg WR */
#define EN0_COUNTER0	0x0d	/* Rcv alignment error counter RD */
#define EN0_DCFG	0x0e	/* Data configuration reg WR */
#define EN0_COUNTER1	0x0e	/* Rcv CRC error counter RD */
#define EN0_IMR		0x0f	/* Interrupt mask reg WR */
#define EN0_COUNTER2	0x0f	/* Rcv missed frame error counter RD */

#define EN1_PHYS        0x11
#define EN1_CURPAG      0x17
#define EN1_MULT        0x18

/*  Register accessed at EN_CMD, the 8390 base addr.  */
#define E8390_STOP	0x01	/* Stop and reset the chip */
#define E8390_START	0x02	/* Start the chip, clear reset */
#define E8390_TRANS	0x04	/* Transmit a frame */
#define E8390_RREAD	0x08	/* Remote read */
#define E8390_RWRITE	0x10	/* Remote write  */
#define E8390_NODMA	0x20	/* Remote DMA */
#define E8390_PAGE0	0x00	/* Select page chip registers */
#define E8390_PAGE1	0x40	/* using the two high-order bits */
#define E8390_PAGE2	0x80	/* Page 3 is invalid. */

/* Bits in EN0_ISR - Interrupt status register */
#define ENISR_RX	0x01	/* Receiver, no error */
#define ENISR_TX	0x02	/* Transmitter, no error */
#define ENISR_RX_ERR	0x04	/* Receiver, with error */
#define ENISR_TX_ERR	0x08	/* Transmitter, with error */
#define ENISR_OVER	0x10	/* Receiver overwrote the ring */
#define ENISR_COUNTERS	0x20	/* Counters need emptying */
#define ENISR_RDC	0x40	/* remote dma complete */
#define ENISR_RESET	0x80	/* Reset completed */
#define ENISR_ALL	0x3f	/* Interrupts we will enable */

/* Bits in received packet status byte and EN0_RSR*/
#define ENRSR_RXOK	0x01	/* Received a good packet */
#define ENRSR_CRC	0x02	/* CRC error */
#define ENRSR_FAE	0x04	/* frame alignment error */
#define ENRSR_FO	0x08	/* FIFO overrun */
#define ENRSR_MPA	0x10	/* missed pkt */
#define ENRSR_PHY	0x20	/* physical/multicast address */
#define ENRSR_DIS	0x40	/* receiver disable. set in monitor mode */
#define ENRSR_DEF	0x80	/* deferring */

/* Transmitted packet status, EN0_TSR. */
#define ENTSR_PTX 0x01	/* Packet transmitted without error */
#define ENTSR_ND  0x02	/* The transmit wasn't deferred. */
#define ENTSR_COL 0x04	/* The transmit collided at least once. */
#define ENTSR_ABT 0x08  /* The transmit collided 16 times, and was deferred. */
#define ENTSR_CRS 0x10	/* The carrier sense was lost. */
#define ENTSR_FU  0x20  /* A "FIFO underrun" occurred during transmit. */
#define ENTSR_CDH 0x40	/* The collision detect "heartbeat" signal was lost. */
#define ENTSR_OWC 0x80  /* There was an out-of-window collision. */

#define NE2000_PMEM_SIZE    (32*1024)
#define NE2000_PMEM_START   (16*1024)
#define NE2000_PMEM_END     (NE2000_PMEM_SIZE+NE2000_PMEM_START)
#define NE2000_MEM_SIZE     NE2000_PMEM_END

typedef struct NE2000State {
    uint8_t cmd;
    uint32_t start;
    uint32_t stop;
    uint8_t boundary;
    uint8_t tsr;
    uint8_t tpsr;
    uint16_t tcnt;
    uint16_t rcnt;
    uint32_t rsar;
    uint8_t rsr;
    uint8_t isr;
    uint8_t dcfg;
    uint8_t imr;
    uint8_t phys[6]; /* mac address */
    uint8_t curpag;
    uint8_t mult[8]; /* multicast mask array */
    int irq;
    PCIDevice *pci_dev;
    NetDriverState *nd;
    uint8_t mem[NE2000_MEM_SIZE];
} NE2000State;

static void ne2000_reset(NE2000State *s)
{
    int i;

    s->isr = ENISR_RESET;
    memcpy(s->mem, s->nd->macaddr, 6);
    s->mem[14] = 0x57;
    s->mem[15] = 0x57;

    /* duplicate prom data */
    for(i = 15;i >= 0; i--) {
        s->mem[2 * i] = s->mem[i];
        s->mem[2 * i + 1] = s->mem[i];
    }
}

static void ne2000_update_irq(NE2000State *s)
{
    int isr;
    isr = s->isr & s->imr;
#if defined(DEBUG_NE2000)
    printf("NE2000: Set IRQ line %d to %d (%02x %02x)\n",
	   s->irq, isr ? 1 : 0, s->isr, s->imr);
#endif
    if (s->irq == 16) {
        /* PCI irq */
        pci_set_irq(s->pci_dev, 0, (isr != 0));
    } else {
        /* ISA irq */
        pic_set_irq(s->irq, (isr != 0));
    }
}

/* return the max buffer size if the NE2000 can receive more data */
static int ne2000_can_receive(void *opaque)
{
    NE2000State *s = opaque;
    int avail, index, boundary;
    
    if (s->cmd & E8390_STOP)
        return 0;
    index = s->curpag << 8;
    boundary = s->boundary << 8;
    if (index < boundary)
        avail = boundary - index;
    else
        avail = (s->stop - s->start) - (index - boundary);
    if (avail < (MAX_ETH_FRAME_SIZE + 4))
        return 0;
    return MAX_ETH_FRAME_SIZE;
}

#define MIN_BUF_SIZE 60

static void ne2000_receive(void *opaque, const uint8_t *buf, int size)
{
    NE2000State *s = opaque;
    uint8_t *p;
    int total_len, next, avail, len, index;
    uint8_t buf1[60];
    
#if defined(DEBUG_NE2000)
    printf("NE2000: received len=%d\n", size);
#endif

    /* if too small buffer, then expand it */
    if (size < MIN_BUF_SIZE) {
        memcpy(buf1, buf, size);
        memset(buf1 + size, 0, MIN_BUF_SIZE - size);
        buf = buf1;
        size = MIN_BUF_SIZE;
    }

    index = s->curpag << 8;
    /* 4 bytes for header */
    total_len = size + 4;
    /* address for next packet (4 bytes for CRC) */
    next = index + ((total_len + 4 + 255) & ~0xff);
    if (next >= s->stop)
        next -= (s->stop - s->start);
    /* prepare packet header */
    p = s->mem + index;
    s->rsr = ENRSR_RXOK; /* receive status */
    /* XXX: check this */
    if (buf[0] & 0x01)
        s->rsr |= ENRSR_PHY;
    p[0] = s->rsr;
    p[1] = next >> 8;
    p[2] = total_len;
    p[3] = total_len >> 8;
    index += 4;

    /* write packet data */
    while (size > 0) {
        avail = s->stop - index;
        len = size;
        if (len > avail)
            len = avail;
        memcpy(s->mem + index, buf, len);
        buf += len;
        index += len;
        if (index == s->stop)
            index = s->start;
        size -= len;
    }
    s->curpag = next >> 8;

    /* now we can signal we have receive something */
    s->isr |= ENISR_RX;
    ne2000_update_irq(s);
}

static void ne2000_ioport_write(void *opaque, uint32_t addr, uint32_t val)
{
    NE2000State *s = opaque;
    int offset, page;

    addr &= 0xf;
#ifdef DEBUG_NE2000
    printf("NE2000: write addr=0x%x val=0x%02x\n", addr, val);
#endif
    if (addr == E8390_CMD) {
        /* control register */
        s->cmd = val;
        if (val & E8390_START) {
            s->isr &= ~ENISR_RESET;
            /* test specific case: zero length transfert */
            if ((val & (E8390_RREAD | E8390_RWRITE)) &&
                s->rcnt == 0) {
                s->isr |= ENISR_RDC;
                ne2000_update_irq(s);
            }
            if (val & E8390_TRANS) {
                qemu_send_packet(s->nd, s->mem + (s->tpsr << 8), s->tcnt);
                /* signal end of transfert */
                s->tsr = ENTSR_PTX;
                s->isr |= ENISR_TX;
                ne2000_update_irq(s);
            }
        }
    } else {
        page = s->cmd >> 6;
        offset = addr | (page << 4);
        switch(offset) {
        case EN0_STARTPG:
            s->start = val << 8;
            break;
        case EN0_STOPPG:
            s->stop = val << 8;
            break;
        case EN0_BOUNDARY:
            s->boundary = val;
            break;
        case EN0_IMR:
            s->imr = val;
            ne2000_update_irq(s);
            break;
        case EN0_TPSR:
            s->tpsr = val;
            break;
        case EN0_TCNTLO:
            s->tcnt = (s->tcnt & 0xff00) | val;
            break;
        case EN0_TCNTHI:
            s->tcnt = (s->tcnt & 0x00ff) | (val << 8);
            break;
        case EN0_RSARLO:
            s->rsar = (s->rsar & 0xff00) | val;
            break;
        case EN0_RSARHI:
            s->rsar = (s->rsar & 0x00ff) | (val << 8);
            break;
        case EN0_RCNTLO:
            s->rcnt = (s->rcnt & 0xff00) | val;
            break;
        case EN0_RCNTHI:
            s->rcnt = (s->rcnt & 0x00ff) | (val << 8);
            break;
        case EN0_DCFG:
            s->dcfg = val;
            break;
        case EN0_ISR:
            s->isr &= ~(val & 0x7f);
            ne2000_update_irq(s);
            break;
        case EN1_PHYS ... EN1_PHYS + 5:
            s->phys[offset - EN1_PHYS] = val;
            break;
        case EN1_CURPAG:
            s->curpag = val;
            break;
        case EN1_MULT ... EN1_MULT + 7:
            s->mult[offset - EN1_MULT] = val;
            break;
        }
    }
}

static uint32_t ne2000_ioport_read(void *opaque, uint32_t addr)
{
    NE2000State *s = opaque;
    int offset, page, ret;

    addr &= 0xf;
    if (addr == E8390_CMD) {
        ret = s->cmd;
    } else {
        page = s->cmd >> 6;
        offset = addr | (page << 4);
        switch(offset) {
        case EN0_TSR:
            ret = s->tsr;
            break;
        case EN0_BOUNDARY:
            ret = s->boundary;
            break;
        case EN0_ISR:
            ret = s->isr;
            break;
	case EN0_RSARLO:
	    ret = s->rsar & 0x00ff;
	    break;
	case EN0_RSARHI:
	    ret = s->rsar >> 8;
	    break;
        case EN1_PHYS ... EN1_PHYS + 5:
            ret = s->phys[offset - EN1_PHYS];
            break;
        case EN1_CURPAG:
            ret = s->curpag;
            break;
        case EN1_MULT ... EN1_MULT + 7:
            ret = s->mult[offset - EN1_MULT];
            break;
        case EN0_RSR:
            ret = s->rsr;
            break;
        default:
            ret = 0x00;
            break;
        }
    }
#ifdef DEBUG_NE2000
    printf("NE2000: read addr=0x%x val=%02x\n", addr, ret);
#endif
    return ret;
}

static inline void ne2000_mem_writeb(NE2000State *s, uint32_t addr, 
                                     uint32_t val)
{
    if (addr < 32 || 
        (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
        s->mem[addr] = val;
    }
}

static inline void ne2000_mem_writew(NE2000State *s, uint32_t addr, 
                                     uint32_t val)
{
    addr &= ~1; /* XXX: check exact behaviour if not even */
    if (addr < 32 || 
        (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
        *(uint16_t *)(s->mem + addr) = cpu_to_le16(val);
    }
}

static inline void ne2000_mem_writel(NE2000State *s, uint32_t addr, 
                                     uint32_t val)
{
    addr &= ~3; /* XXX: check exact behaviour if not even */
    if (addr < 32 || 
        (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
        *(uint32_t *)(s->mem + addr) = cpu_to_le32(val);
    }
}

static inline uint32_t ne2000_mem_readb(NE2000State *s, uint32_t addr)
{
    if (addr < 32 || 
        (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
        return s->mem[addr];
    } else {
        return 0xff;
    }
}

static inline uint32_t ne2000_mem_readw(NE2000State *s, uint32_t addr)
{
    addr &= ~1; /* XXX: check exact behaviour if not even */
    if (addr < 32 || 
        (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
        return le16_to_cpu(*(uint16_t *)(s->mem + addr));
    } else {
        return 0xffff;
    }
}

static inline uint32_t ne2000_mem_readl(NE2000State *s, uint32_t addr)
{
    addr &= ~3; /* XXX: check exact behaviour if not even */
    if (addr < 32 || 
        (addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
        return le32_to_cpu(*(uint32_t *)(s->mem + addr));
    } else {
        return 0xffffffff;
    }
}

static void ne2000_asic_ioport_write(void *opaque, uint32_t addr, uint32_t val)
{
    NE2000State *s = opaque;

#ifdef DEBUG_NE2000
    printf("NE2000: asic write val=0x%04x\n", val);
#endif
    if (s->rcnt == 0)
	    return;
    if (s->dcfg & 0x01) {
        /* 16 bit access */
        ne2000_mem_writew(s, s->rsar, val);
        s->rsar += 2;
        s->rcnt -= 2;
    } else {
        /* 8 bit access */
        ne2000_mem_writeb(s, s->rsar, val);
        s->rsar++;
        s->rcnt--;
    }
    /* wrap */
    if (s->rsar == s->stop)
        s->rsar = s->start;
    if (s->rcnt == 0) {
        /* signal end of transfert */
        s->isr |= ENISR_RDC;
        ne2000_update_irq(s);
    }
}

static uint32_t ne2000_asic_ioport_read(void *opaque, uint32_t addr)
{
    NE2000State *s = opaque;
    int ret;

    if (s->dcfg & 0x01) {
        /* 16 bit access */
        ret = ne2000_mem_readw(s, s->rsar);
        s->rsar += 2;
        s->rcnt -= 2;
    } else {
        /* 8 bit access */
        ret = ne2000_mem_readb(s, s->rsar);
        s->rsar++;
        s->rcnt--;
    }
    /* wrap */
    if (s->rsar == s->stop)
        s->rsar = s->start;
    if (s->rcnt == 0) {
        /* signal end of transfert */
        s->isr |= ENISR_RDC;
        ne2000_update_irq(s);
    }
#ifdef DEBUG_NE2000
    printf("NE2000: asic read val=0x%04x\n", ret);
#endif
    return ret;
}

static void ne2000_asic_ioport_writel(void *opaque, uint32_t addr, uint32_t val)
{
    NE2000State *s = opaque;

#ifdef DEBUG_NE2000
    printf("NE2000: asic writel val=0x%04x\n", val);
#endif
    if (s->rcnt == 0)
	    return;
    /* 32 bit access */
    ne2000_mem_writel(s, s->rsar, val);
    s->rsar += 4;
    s->rcnt -= 4;
    /* wrap */
    if (s->rsar == s->stop)
        s->rsar = s->start;
    if (s->rcnt == 0) {
        /* signal end of transfert */
        s->isr |= ENISR_RDC;
        ne2000_update_irq(s);
    }
}

static uint32_t ne2000_asic_ioport_readl(void *opaque, uint32_t addr)
{
    NE2000State *s = opaque;
    int ret;

    /* 32 bit access */
    ret = ne2000_mem_readl(s, s->rsar);
    s->rsar += 4;
    s->rcnt -= 4;

    /* wrap */
    if (s->rsar == s->stop)
        s->rsar = s->start;
    if (s->rcnt == 0) {
        /* signal end of transfert */
        s->isr |= ENISR_RDC;
        ne2000_update_irq(s);
    }
#ifdef DEBUG_NE2000
    printf("NE2000: asic readl val=0x%04x\n", ret);
#endif
    return ret;
}

static void ne2000_reset_ioport_write(void *opaque, uint32_t addr, uint32_t val)
{
    /* nothing to do (end of reset pulse) */
}

static uint32_t ne2000_reset_ioport_read(void *opaque, uint32_t addr)
{
    NE2000State *s = opaque;
    ne2000_reset(s);
    return 0;
}

void isa_ne2000_init(int base, int irq, NetDriverState *nd)
{
    NE2000State *s;

    s = qemu_mallocz(sizeof(NE2000State));
    if (!s)
        return;
    
    register_ioport_write(base, 16, 1, ne2000_ioport_write, s);
    register_ioport_read(base, 16, 1, ne2000_ioport_read, s);

    register_ioport_write(base + 0x10, 1, 1, ne2000_asic_ioport_write, s);
    register_ioport_read(base + 0x10, 1, 1, ne2000_asic_ioport_read, s);
    register_ioport_write(base + 0x10, 2, 2, ne2000_asic_ioport_write, s);
    register_ioport_read(base + 0x10, 2, 2, ne2000_asic_ioport_read, s);

    register_ioport_write(base + 0x1f, 1, 1, ne2000_reset_ioport_write, s);
    register_ioport_read(base + 0x1f, 1, 1, ne2000_reset_ioport_read, s);
    s->irq = irq;
    s->nd = nd;

    ne2000_reset(s);

    qemu_add_read_packet(nd, ne2000_can_receive, ne2000_receive, s);
}

/***********************************************************/
/* PCI NE2000 definitions */

typedef struct PCINE2000State {
    PCIDevice dev;
    NE2000State ne2000;
} PCINE2000State;

static void ne2000_map(PCIDevice *pci_dev, int region_num, 
                       uint32_t addr, uint32_t size, int type)
{
    PCINE2000State *d = (PCINE2000State *)pci_dev;
    NE2000State *s = &d->ne2000;

    register_ioport_write(addr, 16, 1, ne2000_ioport_write, s);
    register_ioport_read(addr, 16, 1, ne2000_ioport_read, s);

    register_ioport_write(addr + 0x10, 1, 1, ne2000_asic_ioport_write, s);
    register_ioport_read(addr + 0x10, 1, 1, ne2000_asic_ioport_read, s);
    register_ioport_write(addr + 0x10, 2, 2, ne2000_asic_ioport_write, s);
    register_ioport_read(addr + 0x10, 2, 2, ne2000_asic_ioport_read, s);
    register_ioport_write(addr + 0x10, 4, 4, ne2000_asic_ioport_writel, s);
    register_ioport_read(addr + 0x10, 4, 4, ne2000_asic_ioport_readl, s);

    register_ioport_write(addr + 0x1f, 1, 1, ne2000_reset_ioport_write, s);
    register_ioport_read(addr + 0x1f, 1, 1, ne2000_reset_ioport_read, s);
}

void pci_ne2000_init(NetDriverState *nd)
{
    PCINE2000State *d;
    NE2000State *s;
    uint8_t *pci_conf;
    
    d = (PCINE2000State *)pci_register_device("NE2000", sizeof(PCINE2000State),
                                              0, -1, 
                                              NULL, NULL);
    pci_conf = d->dev.config;
    pci_conf[0x00] = 0xec; // Realtek 8029
    pci_conf[0x01] = 0x10;
    pci_conf[0x02] = 0x29;
    pci_conf[0x03] = 0x80;
    pci_conf[0x0a] = 0x00; // ethernet network controller 
    pci_conf[0x0b] = 0x02;
    pci_conf[0x0e] = 0x00; // header_type
    pci_conf[0x3d] = 1; // interrupt pin 0
    
    pci_register_io_region((PCIDevice *)d, 0, 0x100, 
                           PCI_ADDRESS_SPACE_IO, ne2000_map);
    s = &d->ne2000;
    s->irq = 16; // PCI interrupt
    s->pci_dev = (PCIDevice *)d;
    s->nd = nd;
    ne2000_reset(s);
    qemu_add_read_packet(nd, ne2000_can_receive, ne2000_receive, s);
}
Commit	Line	Data
80cabfad FB	1	/*
	2	* QEMU NE2000 emulation
	3	*
	4	* Copyright (c) 2003-2004 Fabrice Bellard
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	22	* THE SOFTWARE.
	23	*/
80cabfad FB	24	#include "vl.h"
	25
	26	/* debug NE2000 card */
	27	//#define DEBUG_NE2000
	28
b41a2cd1	29	#define MAX_ETH_FRAME_SIZE 1514
80cabfad FB	30
	31	#define E8390_CMD 0x00 /* The command register (for all pages) */
	32	/* Page 0 register offsets. */
	33	#define EN0_CLDALO 0x01 /* Low byte of current local dma addr RD */
	34	#define EN0_STARTPG 0x01 /* Starting page of ring bfr WR */
	35	#define EN0_CLDAHI 0x02 /* High byte of current local dma addr RD */
	36	#define EN0_STOPPG 0x02 /* Ending page +1 of ring bfr WR */
	37	#define EN0_BOUNDARY 0x03 /* Boundary page of ring bfr RD WR */
	38	#define EN0_TSR 0x04 /* Transmit status reg RD */
	39	#define EN0_TPSR 0x04 /* Transmit starting page WR */
	40	#define EN0_NCR 0x05 /* Number of collision reg RD */
	41	#define EN0_TCNTLO 0x05 /* Low byte of tx byte count WR */
	42	#define EN0_FIFO 0x06 /* FIFO RD */
	43	#define EN0_TCNTHI 0x06 /* High byte of tx byte count WR */
	44	#define EN0_ISR 0x07 /* Interrupt status reg RD WR */
	45	#define EN0_CRDALO 0x08 /* low byte of current remote dma address RD */
	46	#define EN0_RSARLO 0x08 /* Remote start address reg 0 */
	47	#define EN0_CRDAHI 0x09 /* high byte, current remote dma address RD */
	48	#define EN0_RSARHI 0x09 /* Remote start address reg 1 */
	49	#define EN0_RCNTLO 0x0a /* Remote byte count reg WR */
	50	#define EN0_RCNTHI 0x0b /* Remote byte count reg WR */
	51	#define EN0_RSR 0x0c /* rx status reg RD */
	52	#define EN0_RXCR 0x0c /* RX configuration reg WR */
	53	#define EN0_TXCR 0x0d /* TX configuration reg WR */
	54	#define EN0_COUNTER0 0x0d /* Rcv alignment error counter RD */
	55	#define EN0_DCFG 0x0e /* Data configuration reg WR */
	56	#define EN0_COUNTER1 0x0e /* Rcv CRC error counter RD */
	57	#define EN0_IMR 0x0f /* Interrupt mask reg WR */
	58	#define EN0_COUNTER2 0x0f /* Rcv missed frame error counter RD */
	59
	60	#define EN1_PHYS 0x11
	61	#define EN1_CURPAG 0x17
	62	#define EN1_MULT 0x18
	63
	64	/* Register accessed at EN_CMD, the 8390 base addr. */
	65	#define E8390_STOP 0x01 /* Stop and reset the chip */
	66	#define E8390_START 0x02 /* Start the chip, clear reset */
	67	#define E8390_TRANS 0x04 /* Transmit a frame */
	68	#define E8390_RREAD 0x08 /* Remote read */
	69	#define E8390_RWRITE 0x10 /* Remote write */
	70	#define E8390_NODMA 0x20 /* Remote DMA */
	71	#define E8390_PAGE0 0x00 /* Select page chip registers */
	72	#define E8390_PAGE1 0x40 /* using the two high-order bits */
	73	#define E8390_PAGE2 0x80 /* Page 3 is invalid. */
	74
	75	/* Bits in EN0_ISR - Interrupt status register */
	76	#define ENISR_RX 0x01 /* Receiver, no error */
	77	#define ENISR_TX 0x02 /* Transmitter, no error */
	78	#define ENISR_RX_ERR 0x04 /* Receiver, with error */
	79	#define ENISR_TX_ERR 0x08 /* Transmitter, with error */
	80	#define ENISR_OVER 0x10 /* Receiver overwrote the ring */
	81	#define ENISR_COUNTERS 0x20 /* Counters need emptying */
	82	#define ENISR_RDC 0x40 /* remote dma complete */
	83	#define ENISR_RESET 0x80 /* Reset completed */
	84	#define ENISR_ALL 0x3f /* Interrupts we will enable */
	85
	86	/* Bits in received packet status byte and EN0_RSR*/
	87	#define ENRSR_RXOK 0x01 /* Received a good packet */
	88	#define ENRSR_CRC 0x02 /* CRC error */
	89	#define ENRSR_FAE 0x04 /* frame alignment error */
	90	#define ENRSR_FO 0x08 /* FIFO overrun */
	91	#define ENRSR_MPA 0x10 /* missed pkt */
	92	#define ENRSR_PHY 0x20 /* physical/multicast address */
	93	#define ENRSR_DIS 0x40 /* receiver disable. set in monitor mode */
94	#define ENRSR_DEF 0x80 /* deferring */
95
96	/* Transmitted packet status, EN0_TSR. */
97	#define ENTSR_PTX 0x01 /* Packet transmitted without error */
98	#define ENTSR_ND 0x02 /* The transmit wasn't deferred. */
99	#define ENTSR_COL 0x04 /* The transmit collided at least once. */
100	#define ENTSR_ABT 0x08 /* The transmit collided 16 times, and was deferred. */
101	#define ENTSR_CRS 0x10 /* The carrier sense was lost. */
102	#define ENTSR_FU 0x20 /* A "FIFO underrun" occurred during transmit. */
103	#define ENTSR_CDH 0x40 /* The collision detect "heartbeat" signal was lost. */
104	#define ENTSR_OWC 0x80 /* There was an out-of-window collision. */
105
ee9dbb29 FB	106	#define NE2000_PMEM_SIZE (32*1024)
	107	#define NE2000_PMEM_START (16*1024)
	108	#define NE2000_PMEM_END (NE2000_PMEM_SIZE+NE2000_PMEM_START)
	109	#define NE2000_MEM_SIZE NE2000_PMEM_END
80cabfad FB	110
	111	typedef struct NE2000State {
	112	uint8_t cmd;
	113	uint32_t start;
	114	uint32_t stop;
	115	uint8_t boundary;
	116	uint8_t tsr;
	117	uint8_t tpsr;
	118	uint16_t tcnt;
	119	uint16_t rcnt;
	120	uint32_t rsar;
8d6c7eb8	121	uint8_t rsr;
80cabfad FB	122	uint8_t isr;
	123	uint8_t dcfg;
	124	uint8_t imr;
	125	uint8_t phys[6]; /* mac address */
	126	uint8_t curpag;
	127	uint8_t mult[8]; /* multicast mask array */
	128	int irq;
4a9c9687	129	PCIDevice *pci_dev;
b41a2cd1	130	NetDriverState *nd;
80cabfad FB	131	uint8_t mem[NE2000_MEM_SIZE];
	132	} NE2000State;
	133
80cabfad FB	134	static void ne2000_reset(NE2000State *s)
	135	{
	136	int i;
	137
	138	s->isr = ENISR_RESET;
b41a2cd1	139	memcpy(s->mem, s->nd->macaddr, 6);
80cabfad FB	140	s->mem[14] = 0x57;
	141	s->mem[15] = 0x57;
	142
	143	/* duplicate prom data */
	144	for(i = 15;i >= 0; i--) {
	145	s->mem[2 * i] = s->mem[i];
	146	s->mem[2 * i + 1] = s->mem[i];
	147	}
	148	}
	149
	150	static void ne2000_update_irq(NE2000State *s)
	151	{
	152	int isr;
	153	isr = s->isr & s->imr;
a541f297 FB	154	#if defined(DEBUG_NE2000)
	155	printf("NE2000: Set IRQ line %d to %d (%02x %02x)\n",
	156	s->irq, isr ? 1 : 0, s->isr, s->imr);
	157	#endif
4a9c9687 FB	158	if (s->irq == 16) {
	159	/* PCI irq */
	160	pci_set_irq(s->pci_dev, 0, (isr != 0));
	161	} else {
	162	/* ISA irq */
	163	pic_set_irq(s->irq, (isr != 0));
	164	}
80cabfad FB	165	}
80cabfad FB	166
b41a2cd1 FB	167	/* return the max buffer size if the NE2000 can receive more data */
b41a2cd1 FB	168	static int ne2000_can_receive(void *opaque)
80cabfad	169	{
b41a2cd1	170	NE2000State *s = opaque;
80cabfad FB	171	int avail, index, boundary;
	172
	173	if (s->cmd & E8390_STOP)
	174	return 0;
	175	index = s->curpag << 8;
	176	boundary = s->boundary << 8;
	177	if (index < boundary)
	178	avail = boundary - index;
	179	else
	180	avail = (s->stop - s->start) - (index - boundary);
	181	if (avail < (MAX_ETH_FRAME_SIZE + 4))
	182	return 0;
b41a2cd1	183	return MAX_ETH_FRAME_SIZE;
80cabfad FB	184	}
80cabfad FB	185
b41a2cd1 FB	186	#define MIN_BUF_SIZE 60
	187
	188	static void ne2000_receive(void opaque, const uint8_t buf, int size)
80cabfad	189	{
b41a2cd1	190	NE2000State *s = opaque;
80cabfad FB	191	uint8_t *p;
80cabfad FB	192	int total_len, next, avail, len, index;
b41a2cd1 FB	193	uint8_t buf1[60];
b41a2cd1 FB	194
80cabfad FB	195	#if defined(DEBUG_NE2000)
	196	printf("NE2000: received len=%d\n", size);
	197	#endif
	198
b41a2cd1 FB	199	/* if too small buffer, then expand it */
	200	if (size < MIN_BUF_SIZE) {
	201	memcpy(buf1, buf, size);
	202	memset(buf1 + size, 0, MIN_BUF_SIZE - size);
	203	buf = buf1;
	204	size = MIN_BUF_SIZE;
	205	}
	206
80cabfad FB	207	index = s->curpag << 8;
	208	/* 4 bytes for header */
	209	total_len = size + 4;
	210	/* address for next packet (4 bytes for CRC) */
	211	next = index + ((total_len + 4 + 255) & ~0xff);
	212	if (next >= s->stop)
	213	next -= (s->stop - s->start);
	214	/* prepare packet header */
	215	p = s->mem + index;
8d6c7eb8 FB	216	s->rsr = ENRSR_RXOK; /* receive status */
	217	/* XXX: check this */
	218	if (buf[0] & 0x01)
	219	s->rsr \|= ENRSR_PHY;
	220	p[0] = s->rsr;
80cabfad FB	221	p[1] = next >> 8;
	222	p[2] = total_len;
	223	p[3] = total_len >> 8;
	224	index += 4;
	225
	226	/* write packet data */
	227	while (size > 0) {
	228	avail = s->stop - index;
	229	len = size;
	230	if (len > avail)
	231	len = avail;
	232	memcpy(s->mem + index, buf, len);
	233	buf += len;
	234	index += len;
	235	if (index == s->stop)
	236	index = s->start;
	237	size -= len;
	238	}
	239	s->curpag = next >> 8;
8d6c7eb8	240
80cabfad FB	241	/* now we can signal we have receive something */
	242	s->isr \|= ENISR_RX;
	243	ne2000_update_irq(s);
	244	}
	245
b41a2cd1	246	static void ne2000_ioport_write(void *opaque, uint32_t addr, uint32_t val)
80cabfad	247	{
b41a2cd1	248	NE2000State *s = opaque;
80cabfad FB	249	int offset, page;
	250
	251	addr &= 0xf;
	252	#ifdef DEBUG_NE2000
	253	printf("NE2000: write addr=0x%x val=0x%02x\n", addr, val);
	254	#endif
	255	if (addr == E8390_CMD) {
	256	/* control register */
	257	s->cmd = val;
	258	if (val & E8390_START) {
ee9dbb29	259	s->isr &= ~ENISR_RESET;
80cabfad FB	260	/* test specific case: zero length transfert */
	261	if ((val & (E8390_RREAD \| E8390_RWRITE)) &&
	262	s->rcnt == 0) {
	263	s->isr \|= ENISR_RDC;
	264	ne2000_update_irq(s);
	265	}
	266	if (val & E8390_TRANS) {
ee9dbb29	267	qemu_send_packet(s->nd, s->mem + (s->tpsr << 8), s->tcnt);
80cabfad FB	268	/* signal end of transfert */
	269	s->tsr = ENTSR_PTX;
	270	s->isr \|= ENISR_TX;
	271	ne2000_update_irq(s);
	272	}
	273	}
	274	} else {
	275	page = s->cmd >> 6;
	276	offset = addr \| (page << 4);
	277	switch(offset) {
	278	case EN0_STARTPG:
	279	s->start = val << 8;
	280	break;
	281	case EN0_STOPPG:
	282	s->stop = val << 8;
	283	break;
	284	case EN0_BOUNDARY:
	285	s->boundary = val;
	286	break;
	287	case EN0_IMR:
	288	s->imr = val;
	289	ne2000_update_irq(s);
	290	break;
	291	case EN0_TPSR:
	292	s->tpsr = val;
	293	break;
	294	case EN0_TCNTLO:
	295	s->tcnt = (s->tcnt & 0xff00) \| val;
	296	break;
	297	case EN0_TCNTHI:
	298	s->tcnt = (s->tcnt & 0x00ff) \| (val << 8);
	299	break;
	300	case EN0_RSARLO:
	301	s->rsar = (s->rsar & 0xff00) \| val;
	302	break;
	303	case EN0_RSARHI:
	304	s->rsar = (s->rsar & 0x00ff) \| (val << 8);
	305	break;
	306	case EN0_RCNTLO:
	307	s->rcnt = (s->rcnt & 0xff00) \| val;
	308	break;
	309	case EN0_RCNTHI:
	310	s->rcnt = (s->rcnt & 0x00ff) \| (val << 8);
	311	break;
	312	case EN0_DCFG:
	313	s->dcfg = val;
	314	break;
	315	case EN0_ISR:
ee9dbb29	316	s->isr &= ~(val & 0x7f);
80cabfad FB	317	ne2000_update_irq(s);
	318	break;
	319	case EN1_PHYS ... EN1_PHYS + 5:
	320	s->phys[offset - EN1_PHYS] = val;
	321	break;
	322	case EN1_CURPAG:
	323	s->curpag = val;
	324	break;
	325	case EN1_MULT ... EN1_MULT + 7:
	326	s->mult[offset - EN1_MULT] = val;
	327	break;
	328	}
	329	}
	330	}
	331
b41a2cd1	332	static uint32_t ne2000_ioport_read(void *opaque, uint32_t addr)
80cabfad	333	{
b41a2cd1	334	NE2000State *s = opaque;
80cabfad FB	335	int offset, page, ret;
	336
	337	addr &= 0xf;
	338	if (addr == E8390_CMD) {
	339	ret = s->cmd;
	340	} else {
	341	page = s->cmd >> 6;
	342	offset = addr \| (page << 4);
	343	switch(offset) {
	344	case EN0_TSR:
	345	ret = s->tsr;
	346	break;
	347	case EN0_BOUNDARY:
	348	ret = s->boundary;
	349	break;
	350	case EN0_ISR:
	351	ret = s->isr;
	352	break;
ee9dbb29 FB	353	case EN0_RSARLO:
	354	ret = s->rsar & 0x00ff;
	355	break;
	356	case EN0_RSARHI:
	357	ret = s->rsar >> 8;
	358	break;
80cabfad FB	359	case EN1_PHYS ... EN1_PHYS + 5:
	360	ret = s->phys[offset - EN1_PHYS];
	361	break;
	362	case EN1_CURPAG:
	363	ret = s->curpag;
	364	break;
	365	case EN1_MULT ... EN1_MULT + 7:
	366	ret = s->mult[offset - EN1_MULT];
	367	break;
8d6c7eb8 FB	368	case EN0_RSR:
	369	ret = s->rsr;
	370	break;
80cabfad FB	371	default:
	372	ret = 0x00;
	373	break;
	374	}
	375	}
	376	#ifdef DEBUG_NE2000
	377	printf("NE2000: read addr=0x%x val=%02x\n", addr, ret);
	378	#endif
	379	return ret;
	380	}
	381
ee9dbb29	382	static inline void ne2000_mem_writeb(NE2000State *s, uint32_t addr,
69b91039	383	uint32_t val)
ee9dbb29 FB	384	{
	385	if (addr < 32 \|\|
	386	(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
	387	s->mem[addr] = val;
	388	}
	389	}
	390
	391	static inline void ne2000_mem_writew(NE2000State *s, uint32_t addr,
	392	uint32_t val)
	393	{
	394	addr &= ~1; /* XXX: check exact behaviour if not even */
	395	if (addr < 32 \|\|
	396	(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
69b91039 FB	397	(uint16_t )(s->mem + addr) = cpu_to_le16(val);
	398	}
	399	}
	400
	401	static inline void ne2000_mem_writel(NE2000State *s, uint32_t addr,
	402	uint32_t val)
	403	{
	404	addr &= ~3; /* XXX: check exact behaviour if not even */
	405	if (addr < 32 \|\|
	406	(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
	407	(uint32_t )(s->mem + addr) = cpu_to_le32(val);
ee9dbb29 FB	408	}
	409	}
	410
	411	static inline uint32_t ne2000_mem_readb(NE2000State *s, uint32_t addr)
	412	{
	413	if (addr < 32 \|\|
	414	(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
	415	return s->mem[addr];
	416	} else {
	417	return 0xff;
	418	}
	419	}
	420
	421	static inline uint32_t ne2000_mem_readw(NE2000State *s, uint32_t addr)
	422	{
	423	addr &= ~1; /* XXX: check exact behaviour if not even */
	424	if (addr < 32 \|\|
	425	(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
69b91039	426	return le16_to_cpu((uint16_t )(s->mem + addr));
ee9dbb29 FB	427	} else {
	428	return 0xffff;
	429	}
	430	}
	431
69b91039 FB	432	static inline uint32_t ne2000_mem_readl(NE2000State *s, uint32_t addr)
	433	{
	434	addr &= ~3; /* XXX: check exact behaviour if not even */
	435	if (addr < 32 \|\|
	436	(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) {
	437	return le32_to_cpu((uint32_t )(s->mem + addr));
	438	} else {
	439	return 0xffffffff;
	440	}
	441	}
	442
b41a2cd1	443	static void ne2000_asic_ioport_write(void *opaque, uint32_t addr, uint32_t val)
80cabfad	444	{
b41a2cd1	445	NE2000State *s = opaque;
80cabfad FB	446
	447	#ifdef DEBUG_NE2000
	448	printf("NE2000: asic write val=0x%04x\n", val);
	449	#endif
ee9dbb29 FB	450	if (s->rcnt == 0)
ee9dbb29 FB	451	return;
80cabfad FB	452	if (s->dcfg & 0x01) {
80cabfad FB	453	/* 16 bit access */
ee9dbb29	454	ne2000_mem_writew(s, s->rsar, val);
80cabfad FB	455	s->rsar += 2;
	456	s->rcnt -= 2;
	457	} else {
	458	/* 8 bit access */
ee9dbb29	459	ne2000_mem_writeb(s, s->rsar, val);
80cabfad FB	460	s->rsar++;
	461	s->rcnt--;
	462	}
	463	/* wrap */
	464	if (s->rsar == s->stop)
	465	s->rsar = s->start;
	466	if (s->rcnt == 0) {
	467	/* signal end of transfert */
	468	s->isr \|= ENISR_RDC;
	469	ne2000_update_irq(s);
	470	}
	471	}
	472
b41a2cd1	473	static uint32_t ne2000_asic_ioport_read(void *opaque, uint32_t addr)
80cabfad	474	{
b41a2cd1	475	NE2000State *s = opaque;
80cabfad FB	476	int ret;
80cabfad FB	477
80cabfad FB	478	if (s->dcfg & 0x01) {
80cabfad FB	479	/* 16 bit access */
ee9dbb29	480	ret = ne2000_mem_readw(s, s->rsar);
80cabfad FB	481	s->rsar += 2;
	482	s->rcnt -= 2;
	483	} else {
	484	/* 8 bit access */
ee9dbb29	485	ret = ne2000_mem_readb(s, s->rsar);
80cabfad FB	486	s->rsar++;
	487	s->rcnt--;
	488	}
	489	/* wrap */
	490	if (s->rsar == s->stop)
	491	s->rsar = s->start;
	492	if (s->rcnt == 0) {
	493	/* signal end of transfert */
	494	s->isr \|= ENISR_RDC;
	495	ne2000_update_irq(s);
	496	}
	497	#ifdef DEBUG_NE2000
	498	printf("NE2000: asic read val=0x%04x\n", ret);
	499	#endif
	500	return ret;
	501	}
	502
69b91039 FB	503	static void ne2000_asic_ioport_writel(void *opaque, uint32_t addr, uint32_t val)
	504	{
	505	NE2000State *s = opaque;
	506
	507	#ifdef DEBUG_NE2000
	508	printf("NE2000: asic writel val=0x%04x\n", val);
	509	#endif
	510	if (s->rcnt == 0)
	511	return;
	512	/* 32 bit access */
	513	ne2000_mem_writel(s, s->rsar, val);
	514	s->rsar += 4;
	515	s->rcnt -= 4;
	516	/* wrap */
	517	if (s->rsar == s->stop)
	518	s->rsar = s->start;
	519	if (s->rcnt == 0) {
	520	/* signal end of transfert */
	521	s->isr \|= ENISR_RDC;
	522	ne2000_update_irq(s);
	523	}
	524	}
	525
	526	static uint32_t ne2000_asic_ioport_readl(void *opaque, uint32_t addr)
	527	{
	528	NE2000State *s = opaque;
	529	int ret;
	530
	531	/* 32 bit access */
	532	ret = ne2000_mem_readl(s, s->rsar);
	533	s->rsar += 4;
	534	s->rcnt -= 4;
	535
	536	/* wrap */
	537	if (s->rsar == s->stop)
	538	s->rsar = s->start;
	539	if (s->rcnt == 0) {
	540	/* signal end of transfert */
	541	s->isr \|= ENISR_RDC;
	542	ne2000_update_irq(s);
	543	}
	544	#ifdef DEBUG_NE2000
	545	printf("NE2000: asic readl val=0x%04x\n", ret);
	546	#endif
	547	return ret;
	548	}
	549
b41a2cd1	550	static void ne2000_reset_ioport_write(void *opaque, uint32_t addr, uint32_t val)
80cabfad FB	551	{
	552	/* nothing to do (end of reset pulse) */
	553	}
	554
b41a2cd1	555	static uint32_t ne2000_reset_ioport_read(void *opaque, uint32_t addr)
80cabfad	556	{
b41a2cd1	557	NE2000State *s = opaque;
80cabfad FB	558	ne2000_reset(s);
	559	return 0;
	560	}
	561
69b91039	562	void isa_ne2000_init(int base, int irq, NetDriverState *nd)
80cabfad	563	{
b41a2cd1	564	NE2000State *s;
80cabfad	565
b41a2cd1 FB	566	s = qemu_mallocz(sizeof(NE2000State));
	567	if (!s)
	568	return;
	569
	570	register_ioport_write(base, 16, 1, ne2000_ioport_write, s);
	571	register_ioport_read(base, 16, 1, ne2000_ioport_read, s);
80cabfad	572
b41a2cd1 FB	573	register_ioport_write(base + 0x10, 1, 1, ne2000_asic_ioport_write, s);
	574	register_ioport_read(base + 0x10, 1, 1, ne2000_asic_ioport_read, s);
	575	register_ioport_write(base + 0x10, 2, 2, ne2000_asic_ioport_write, s);
	576	register_ioport_read(base + 0x10, 2, 2, ne2000_asic_ioport_read, s);
80cabfad	577
b41a2cd1 FB	578	register_ioport_write(base + 0x1f, 1, 1, ne2000_reset_ioport_write, s);
b41a2cd1 FB	579	register_ioport_read(base + 0x1f, 1, 1, ne2000_reset_ioport_read, s);
80cabfad	580	s->irq = irq;
b41a2cd1	581	s->nd = nd;
80cabfad FB	582
80cabfad FB	583	ne2000_reset(s);
b41a2cd1	584
ee9dbb29	585	qemu_add_read_packet(nd, ne2000_can_receive, ne2000_receive, s);
80cabfad	586	}
69b91039 FB	587
	588	/***********************************************************/
	589	/* PCI NE2000 definitions */
	590
	591	typedef struct PCINE2000State {
	592	PCIDevice dev;
	593	NE2000State ne2000;
	594	} PCINE2000State;
	595
69b91039 FB	596	static void ne2000_map(PCIDevice *pci_dev, int region_num,
	597	uint32_t addr, uint32_t size, int type)
	598	{
	599	PCINE2000State d = (PCINE2000State )pci_dev;
	600	NE2000State *s = &d->ne2000;
	601
	602	register_ioport_write(addr, 16, 1, ne2000_ioport_write, s);
	603	register_ioport_read(addr, 16, 1, ne2000_ioport_read, s);
	604
	605	register_ioport_write(addr + 0x10, 1, 1, ne2000_asic_ioport_write, s);
	606	register_ioport_read(addr + 0x10, 1, 1, ne2000_asic_ioport_read, s);
	607	register_ioport_write(addr + 0x10, 2, 2, ne2000_asic_ioport_write, s);
	608	register_ioport_read(addr + 0x10, 2, 2, ne2000_asic_ioport_read, s);
	609	register_ioport_write(addr + 0x10, 4, 4, ne2000_asic_ioport_writel, s);
	610	register_ioport_read(addr + 0x10, 4, 4, ne2000_asic_ioport_readl, s);
	611
	612	register_ioport_write(addr + 0x1f, 1, 1, ne2000_reset_ioport_write, s);
	613	register_ioport_read(addr + 0x1f, 1, 1, ne2000_reset_ioport_read, s);
	614	}
	615
	616	void pci_ne2000_init(NetDriverState *nd)
	617	{
	618	PCINE2000State *d;
	619	NE2000State *s;
	620	uint8_t *pci_conf;
	621
	622	d = (PCINE2000State *)pci_register_device("NE2000", sizeof(PCINE2000State),
	623	0, -1,
4a9c9687	624	NULL, NULL);
69b91039 FB	625	pci_conf = d->dev.config;
	626	pci_conf[0x00] = 0xec; // Realtek 8029
	627	pci_conf[0x01] = 0x10;
	628	pci_conf[0x02] = 0x29;
	629	pci_conf[0x03] = 0x80;
	630	pci_conf[0x0a] = 0x00; // ethernet network controller
	631	pci_conf[0x0b] = 0x02;
	632	pci_conf[0x0e] = 0x00; // header_type
4a9c9687	633	pci_conf[0x3d] = 1; // interrupt pin 0
69b91039 FB	634
	635	pci_register_io_region((PCIDevice *)d, 0, 0x100,
	636	PCI_ADDRESS_SPACE_IO, ne2000_map);
	637	s = &d->ne2000;
4a9c9687 FB	638	s->irq = 16; // PCI interrupt
4a9c9687 FB	639	s->pci_dev = (PCIDevice *)d;
69b91039 FB	640	s->nd = nd;
	641	ne2000_reset(s);
	642	qemu_add_read_packet(nd, ne2000_can_receive, ne2000_receive, s);
	643	}