auto import from //depot/cupcake/@135843

1 files changed, 0 insertions, 715 deletions

diff --git a/hw/smc91c111.c b/hw/smc91c111.c
deleted file mode 100644
index 410051d..0000000
--- a/hw/smc91c111.c
+++ /dev/null
@@ -1,715 +0,0 @@
-/*
- * SMSC 91C111 Ethernet interface emulation
- *
- * Copyright (c) 2005 CodeSourcery, LLC.
- * Written by Paul Brook
- *
- * This code is licenced under the GPL
- */
-
-#include "hw.h"
-#include "net.h"
-#include "devices.h"
-/* For crc32 */
-#include <zlib.h>
-
-/* Number of 2k memory pages available.  */
-#define NUM_PACKETS 4
-
-typedef struct {
-    uint32_t base;
-    VLANClientState *vc;
-    uint16_t tcr;
-    uint16_t rcr;
-    uint16_t cr;
-    uint16_t ctr;
-    uint16_t gpr;
-    uint16_t ptr;
-    uint16_t ercv;
-    qemu_irq irq;
-    int bank;
-    int packet_num;
-    int tx_alloc;
-    /* Bitmask of allocated packets.  */
-    int allocated;
-    int tx_fifo_len;
-    int tx_fifo[NUM_PACKETS];
-    int rx_fifo_len;
-    int rx_fifo[NUM_PACKETS];
-    int tx_fifo_done_len;
-    int tx_fifo_done[NUM_PACKETS];
-    /* Packet buffer memory.  */
-    uint8_t data[NUM_PACKETS][2048];
-    uint8_t int_level;
-    uint8_t int_mask;
-    uint8_t macaddr[6];
-} smc91c111_state;
-
-#define RCR_SOFT_RST  0x8000
-#define RCR_STRIP_CRC 0x0200
-#define RCR_RXEN      0x0100
-
-#define TCR_EPH_LOOP  0x2000
-#define TCR_NOCRC     0x0100
-#define TCR_PAD_EN    0x0080
-#define TCR_FORCOL    0x0004
-#define TCR_LOOP      0x0002
-#define TCR_TXEN      0x0001
-
-#define INT_MD        0x80
-#define INT_ERCV      0x40
-#define INT_EPH       0x20
-#define INT_RX_OVRN   0x10
-#define INT_ALLOC     0x08
-#define INT_TX_EMPTY  0x04
-#define INT_TX        0x02
-#define INT_RCV       0x01
-
-#define CTR_AUTO_RELEASE  0x0800
-#define CTR_RELOAD        0x0002
-#define CTR_STORE         0x0001
-
-#define RS_ALGNERR      0x8000
-#define RS_BRODCAST     0x4000
-#define RS_BADCRC       0x2000
-#define RS_ODDFRAME     0x1000
-#define RS_TOOLONG      0x0800
-#define RS_TOOSHORT     0x0400
-#define RS_MULTICAST    0x0001
-
-/* Update interrupt status.  */
-static void smc91c111_update(smc91c111_state *s)
-{
-    int level;
-
-    if (s->tx_fifo_len == 0)
-        s->int_level |= INT_TX_EMPTY;
-    if (s->tx_fifo_done_len != 0)
-        s->int_level |= INT_TX;
-    level = (s->int_level & s->int_mask) != 0;
-    qemu_set_irq(s->irq, level);
-}
-
-/* Try to allocate a packet.  Returns 0x80 on failure.  */
-static int smc91c111_allocate_packet(smc91c111_state *s)
-{
-    int i;
-    if (s->allocated == (1 << NUM_PACKETS) - 1) {
-        return 0x80;
-    }
-
-    for (i = 0; i < NUM_PACKETS; i++) {
-        if ((s->allocated & (1 << i)) == 0)
-            break;
-    }
-    s->allocated |= 1 << i;
-    return i;
-}
-
-
-/* Process a pending TX allocate.  */
-static void smc91c111_tx_alloc(smc91c111_state *s)
-{
-    s->tx_alloc = smc91c111_allocate_packet(s);
-    if (s->tx_alloc == 0x80)
-        return;
-    s->int_level |= INT_ALLOC;
-    smc91c111_update(s);
-}
-
-/* Remove and item from the RX FIFO.  */
-static void smc91c111_pop_rx_fifo(smc91c111_state *s)
-{
-    int i;
-
-    s->rx_fifo_len--;
-    if (s->rx_fifo_len) {
-        for (i = 0; i < s->rx_fifo_len; i++)
-            s->rx_fifo[i] = s->rx_fifo[i + 1];
-        s->int_level |= INT_RCV;
-    } else {
-        s->int_level &= ~INT_RCV;
-    }
-    smc91c111_update(s);
-}
-
-/* Remove an item from the TX completion FIFO.  */
-static void smc91c111_pop_tx_fifo_done(smc91c111_state *s)
-{
-    int i;
-
-    if (s->tx_fifo_done_len == 0)
-        return;
-    s->tx_fifo_done_len--;
-    for (i = 0; i < s->tx_fifo_done_len; i++)
-        s->tx_fifo_done[i] = s->tx_fifo_done[i + 1];
-}
-
-/* Release the memory allocated to a packet.  */
-static void smc91c111_release_packet(smc91c111_state *s, int packet)
-{
-    s->allocated &= ~(1 << packet);
-    if (s->tx_alloc == 0x80)
-        smc91c111_tx_alloc(s);
-}
-
-/* Flush the TX FIFO.  */
-static void smc91c111_do_tx(smc91c111_state *s)
-{
-    int i;
-    int len;
-    int control;
-    int add_crc;
-    int packetnum;
-    uint8_t *p;
-
-    if ((s->tcr & TCR_TXEN) == 0)
-        return;
-    if (s->tx_fifo_len == 0)
-        return;
-    for (i = 0; i < s->tx_fifo_len; i++) {
-        packetnum = s->tx_fifo[i];
-        p = &s->data[packetnum][0];
-        /* Set status word.  */
-        *(p++) = 0x01;
-        *(p++) = 0x40;
-        len = *(p++);
-        len |= ((int)*(p++)) << 8;
-        len -= 6;
-        control = p[len + 1];
-        if (control & 0x20)
-            len++;
-        /* ??? This overwrites the data following the buffer.
-           Don't know what real hardware does.  */
-        if (len < 64 && (s->tcr & TCR_PAD_EN)) {
-            memset(p + len, 0, 64 - len);
-            len = 64;
-        }
-#if 0
-        /* The card is supposed to append the CRC to the frame.  However
-           none of the other network traffic has the CRC appended.
-           Suspect this is low level ethernet detail we don't need to worry
-           about.  */
-        add_crc = (control & 0x10) || (s->tcr & TCR_NOCRC) == 0;
-        if (add_crc) {
-            uint32_t crc;
-
-            crc = crc32(~0, p, len);
-            memcpy(p + len, &crc, 4);
-            len += 4;
-        }
-#else
-        add_crc = 0;
-#endif
-        if (s->ctr & CTR_AUTO_RELEASE)
-            /* Race?  */
-            smc91c111_release_packet(s, packetnum);
-        else if (s->tx_fifo_done_len < NUM_PACKETS)
-            s->tx_fifo_done[s->tx_fifo_done_len++] = packetnum;
-        qemu_send_packet(s->vc, p, len);
-    }
-    s->tx_fifo_len = 0;
-    smc91c111_update(s);
-}
-
-/* Add a packet to the TX FIFO.  */
-static void smc91c111_queue_tx(smc91c111_state *s, int packet)
-{
-    if (s->tx_fifo_len == NUM_PACKETS)
-        return;
-    s->tx_fifo[s->tx_fifo_len++] = packet;
-    smc91c111_do_tx(s);
-}
-
-static void smc91c111_reset(smc91c111_state *s)
-{
-    s->bank = 0;
-    s->tx_fifo_len = 0;
-    s->tx_fifo_done_len = 0;
-    s->rx_fifo_len = 0;
-    s->allocated = 0;
-    s->packet_num = 0;
-    s->tx_alloc = 0;
-    s->tcr = 0;
-    s->rcr = 0;
-    s->cr = 0xa0b1;
-    s->ctr = 0x1210;
-    s->ptr = 0;
-    s->ercv = 0x1f;
-    s->int_level = INT_TX_EMPTY;
-    s->int_mask = 0;
-    smc91c111_update(s);
-}
-
-#define SET_LOW(name, val) s->name = (s->name & 0xff00) | val
-#define SET_HIGH(name, val) s->name = (s->name & 0xff) | (val << 8)
-
-static void smc91c111_writeb(void *opaque, target_phys_addr_t offset,
-                             uint32_t value)
-{
-    smc91c111_state *s = (smc91c111_state *)opaque;
-
-    offset -= s->base;
-    if (offset == 14) {
-        s->bank = value;
-        return;
-    }
-    if (offset == 15)
-        return;
-    switch (s->bank) {
-    case 0:
-        switch (offset) {
-        case 0: /* TCR */
-            SET_LOW(tcr, value);
-            return;
-        case 1:
-            SET_HIGH(tcr, value);
-            return;
-        case 4: /* RCR */
-            SET_LOW(rcr, value);
-            return;
-        case 5:
-            SET_HIGH(rcr, value);
-            if (s->rcr & RCR_SOFT_RST)
-                smc91c111_reset(s);
-            return;
-        case 10: case 11: /* RPCR */
-            /* Ignored */
-            return;
-        }
-        break;
-
-    case 1:
-        switch (offset) {
-        case 0: /* CONFIG */
-            SET_LOW(cr, value);
-            return;
-        case 1:
-            SET_HIGH(cr,value);
-            return;
-        case 2: case 3: /* BASE */
-        case 4: case 5: case 6: case 7: case 8: case 9: /* IA */
-            /* Not implemented.  */
-            return;
-        case 10: /* Genral Purpose */
-            SET_LOW(gpr, value);
-            return;
-        case 11:
-            SET_HIGH(gpr, value);
-            return;
-        case 12: /* Control */
-            if (value & 1)
-                fprintf(stderr, "smc91c111:EEPROM store not implemented\n");
-            if (value & 2)
-                fprintf(stderr, "smc91c111:EEPROM reload not implemented\n");
-            value &= ~3;
-            SET_LOW(ctr, value);
-            return;
-        case 13:
-            SET_HIGH(ctr, value);
-            return;
-        }
-        break;
-
-    case 2:
-        switch (offset) {
-        case 0: /* MMU Command */
-            switch (value >> 5) {
-            case 0: /* no-op */
-                break;
-            case 1: /* Allocate for TX.  */
-                s->tx_alloc = 0x80;
-                s->int_level &= ~INT_ALLOC;
-                smc91c111_update(s);
-                smc91c111_tx_alloc(s);
-                break;
-            case 2: /* Reset MMU.  */
-                s->allocated = 0;
-                s->tx_fifo_len = 0;
-                s->tx_fifo_done_len = 0;
-                s->rx_fifo_len = 0;
-                s->tx_alloc = 0;
-                break;
-            case 3: /* Remove from RX FIFO.  */
-                smc91c111_pop_rx_fifo(s);
-                break;
-            case 4: /* Remove from RX FIFO and release.  */
-                if (s->rx_fifo_len > 0) {
-                    smc91c111_release_packet(s, s->rx_fifo[0]);
-                }
-                smc91c111_pop_rx_fifo(s);
-                break;
-            case 5: /* Release.  */
-                smc91c111_release_packet(s, s->packet_num);
-                break;
-            case 6: /* Add to TX FIFO.  */
-                smc91c111_queue_tx(s, s->packet_num);
-                break;
-            case 7: /* Reset TX FIFO.  */
-                s->tx_fifo_len = 0;
-                s->tx_fifo_done_len = 0;
-                break;
-            }
-            return;
-        case 1:
-            /* Ignore.  */
-            return;
-        case 2: /* Packet Number Register */
-            s->packet_num = value;
-            return;
-        case 3: case 4: case 5:
-            /* Should be readonly, but linux writes to them anyway. Ignore.  */
-            return;
-        case 6: /* Pointer */
-            SET_LOW(ptr, value);
-            return;
-        case 7:
-            SET_HIGH(ptr, value);
-            return;
-        case 8: case 9: case 10: case 11: /* Data */
-            {
-                int p;
-                int n;
-
-                if (s->ptr & 0x8000)
-                    n = s->rx_fifo[0];
-                else
-                    n = s->packet_num;
-                p = s->ptr & 0x07ff;
-                if (s->ptr & 0x4000) {
-                    s->ptr = (s->ptr & 0xf800) | ((s->ptr + 1) & 0x7ff);
-                } else {
-                    p += (offset & 3);
-                }
-                s->data[n][p] = value;
-            }
-            return;
-        case 12: /* Interrupt ACK.  */
-            s->int_level &= ~(value & 0xd6);
-            if (value & INT_TX)
-                smc91c111_pop_tx_fifo_done(s);
-            smc91c111_update(s);
-            return;
-        case 13: /* Interrupt mask.  */
-            s->int_mask = value;
-            smc91c111_update(s);
-            return;
-        }
-        break;;
-
-    case 3:
-        switch (offset) {
-        case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
-            /* Multicast table.  */
-            /* Not implemented.  */
-            return;
-        case 8: case 9: /* Management Interface.  */
-            /* Not implemented.  */
-            return;
-        case 12: /* Early receive.  */
-            s->ercv = value & 0x1f;
-        case 13:
-            /* Ignore.  */
-            return;
-        }
-        break;
-    }
-    cpu_abort (cpu_single_env, "smc91c111_write: Bad reg %d:%x\n",
-               s->bank, (int)offset);
-}
-
-static uint32_t smc91c111_readb(void *opaque, target_phys_addr_t offset)
-{
-    smc91c111_state *s = (smc91c111_state *)opaque;
-
-    offset -= s->base;
-    if (offset == 14) {
-        return s->bank;
-    }
-    if (offset == 15)
-        return 0x33;
-    switch (s->bank) {
-    case 0:
-        switch (offset) {
-        case 0: /* TCR */
-            return s->tcr & 0xff;
-        case 1:
-            return s->tcr >> 8;
-        case 2: /* EPH Status */
-            return 0;
-        case 3:
-            return 0x40;
-        case 4: /* RCR */
-            return s->rcr & 0xff;
-        case 5:
-            return s->rcr >> 8;
-        case 6: /* Counter */
-        case 7:
-            /* Not implemented.  */
-            return 0;
-        case 8: /* Memory size.  */
-            return NUM_PACKETS;
-        case 9: /* Free memory available.  */
-            {
-                int i;
-                int n;
-                n = 0;
-                for (i = 0; i < NUM_PACKETS; i++) {
-                    if (s->allocated & (1 << i))
-                        n++;
-                }
-                return n;
-            }
-        case 10: case 11: /* RPCR */
-            /* Not implemented.  */
-            return 0;
-        }
-        break;
-
-    case 1:
-        switch (offset) {
-        case 0: /* CONFIG */
-            return s->cr & 0xff;
-        case 1:
-            return s->cr >> 8;
-        case 2: case 3: /* BASE */
-            /* Not implemented.  */
-            return 0;
-        case 4: case 5: case 6: case 7: case 8: case 9: /* IA */
-            return s->macaddr[offset - 4];
-        case 10: /* General Purpose */
-            return s->gpr & 0xff;
-        case 11:
-            return s->gpr >> 8;
-        case 12: /* Control */
-            return s->ctr & 0xff;
-        case 13:
-            return s->ctr >> 8;
-        }
-        break;
-
-    case 2:
-        switch (offset) {
-        case 0: case 1: /* MMUCR Busy bit.  */
-            return 0;
-        case 2: /* Packet Number.  */
-            return s->packet_num;
-        case 3: /* Allocation Result.  */
-            return s->tx_alloc;
-        case 4: /* TX FIFO */
-            if (s->tx_fifo_done_len == 0)
-                return 0x80;
-            else
-                return s->tx_fifo_done[0];
-        case 5: /* RX FIFO */
-            if (s->rx_fifo_len == 0)
-                return 0x80;
-            else
-                return s->rx_fifo[0];
-        case 6: /* Pointer */
-            return s->ptr & 0xff;
-        case 7:
-            return (s->ptr >> 8) & 0xf7;
-        case 8: case 9: case 10: case 11: /* Data */
-            {
-                int p;
-                int n;
-
-                if (s->ptr & 0x8000)
-                    n = s->rx_fifo[0];
-                else
-                    n = s->packet_num;
-                p = s->ptr & 0x07ff;
-                if (s->ptr & 0x4000) {
-                    s->ptr = (s->ptr & 0xf800) | ((s->ptr + 1) & 0x07ff);
-                } else {
-                    p += (offset & 3);
-                }
-                return s->data[n][p];
-            }
-        case 12: /* Interrupt status.  */
-            return s->int_level;
-        case 13: /* Interrupt mask.  */
-            return s->int_mask;
-        }
-        break;
-
-    case 3:
-        switch (offset) {
-        case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
-            /* Multicast table.  */
-            /* Not implemented.  */
-            return 0;
-        case 8: /* Management Interface.  */
-            /* Not implemented.  */
-            return 0x30;
-        case 9:
-            return 0x33;
-        case 10: /* Revision.  */
-            return 0x91;
-        case 11:
-            return 0x33;
-        case 12:
-            return s->ercv;
-        case 13:
-            return 0;
-        }
-        break;
-    }
-    cpu_abort (cpu_single_env, "smc91c111_read: Bad reg %d:%x\n",
-               s->bank, (int)offset);
-    return 0;
-}
-
-static void smc91c111_writew(void *opaque, target_phys_addr_t offset,
-                             uint32_t value)
-{
-    smc91c111_writeb(opaque, offset, value & 0xff);
-    smc91c111_writeb(opaque, offset + 1, value >> 8);
-}
-
-static void smc91c111_writel(void *opaque, target_phys_addr_t offset,
-                             uint32_t value)
-{
-    smc91c111_state *s = (smc91c111_state *)opaque;
-    /* 32-bit writes to offset 0xc only actually write to the bank select
-       register (offset 0xe)  */
-    if (offset != s->base + 0xc)
-        smc91c111_writew(opaque, offset, value & 0xffff);
-    smc91c111_writew(opaque, offset + 2, value >> 16);
-}
-
-static uint32_t smc91c111_readw(void *opaque, target_phys_addr_t offset)
-{
-    uint32_t val;
-    val = smc91c111_readb(opaque, offset);
-    val |= smc91c111_readb(opaque, offset + 1) << 8;
-    return val;
-}
-
-static uint32_t smc91c111_readl(void *opaque, target_phys_addr_t offset)
-{
-    uint32_t val;
-    val = smc91c111_readw(opaque, offset);
-    val |= smc91c111_readw(opaque, offset + 2) << 16;
-    return val;
-}
-
-static int smc91c111_can_receive(void *opaque)
-{
-    smc91c111_state *s = (smc91c111_state *)opaque;
-
-    if ((s->rcr & RCR_RXEN) == 0 || (s->rcr & RCR_SOFT_RST))
-        return 1;
-    if (s->allocated == (1 << NUM_PACKETS) - 1)
-        return 0;
-    return 1;
-}
-
-static void smc91c111_receive(void *opaque, const uint8_t *buf, int size)
-{
-    smc91c111_state *s = (smc91c111_state *)opaque;
-    int status;
-    int packetsize;
-    uint32_t crc;
-    int packetnum;
-    uint8_t *p;
-
-    if ((s->rcr & RCR_RXEN) == 0 || (s->rcr & RCR_SOFT_RST))
-        return;
-    /* Short packets are padded with zeros.  Receiving a packet
-       < 64 bytes long is considered an error condition.  */
-    if (size < 64)
-        packetsize = 64;
-    else
-        packetsize = (size & ~1);
-    packetsize += 6;
-    crc = (s->rcr & RCR_STRIP_CRC) == 0;
-    if (crc)
-        packetsize += 4;
-    /* TODO: Flag overrun and receive errors.  */
-    if (packetsize > 2048)
-        return;
-    packetnum = smc91c111_allocate_packet(s);
-    if (packetnum == 0x80)
-        return;
-    s->rx_fifo[s->rx_fifo_len++] = packetnum;
-
-    p = &s->data[packetnum][0];
-    /* ??? Multicast packets?  */
-    status = 0;
-    if (size > 1518)
-        status |= RS_TOOLONG;
-    if (size & 1)
-        status |= RS_ODDFRAME;
-    *(p++) = status & 0xff;
-    *(p++) = status >> 8;
-    *(p++) = packetsize & 0xff;
-    *(p++) = packetsize >> 8;
-    memcpy(p, buf, size & ~1);
-    p += (size & ~1);
-    /* Pad short packets.  */
-    if (size < 64) {
-        int pad;
-
-        if (size & 1)
-            *(p++) = buf[size - 1];
-        pad = 64 - size;
-        memset(p, 0, pad);
-        p += pad;
-        size = 64;
-    }
-    /* It's not clear if the CRC should go before or after the last byte in
-       odd sized packets.  Linux disables the CRC, so that's no help.
-       The pictures in the documentation show the CRC aligned on a 16-bit
-       boundary before the last odd byte, so that's what we do.  */
-    if (crc) {
-        crc = crc32(~0, buf, size);
-        *(p++) = crc & 0xff; crc >>= 8;
-        *(p++) = crc & 0xff; crc >>= 8;
-        *(p++) = crc & 0xff; crc >>= 8;
-        *(p++) = crc & 0xff; crc >>= 8;
-    }
-    if (size & 1) {
-        *(p++) = buf[size - 1];
-        *(p++) = 0x60;
-    } else {
-        *(p++) = 0;
-        *(p++) = 0x40;
-    }
-    /* TODO: Raise early RX interrupt?  */
-    s->int_level |= INT_RCV;
-    smc91c111_update(s);
-}
-
-static CPUReadMemoryFunc *smc91c111_readfn[] = {
-    smc91c111_readb,
-    smc91c111_readw,
-    smc91c111_readl
-};
-
-static CPUWriteMemoryFunc *smc91c111_writefn[] = {
-    smc91c111_writeb,
-    smc91c111_writew,
-    smc91c111_writel
-};
-
-void smc91c111_init(NICInfo *nd, uint32_t base, qemu_irq irq)
-{
-    smc91c111_state *s;
-    int iomemtype;
-
-    s = (smc91c111_state *)qemu_mallocz(sizeof(smc91c111_state));
-    iomemtype = cpu_register_io_memory(0, smc91c111_readfn,
-                                       smc91c111_writefn, s);
-    cpu_register_physical_memory(base, 16, iomemtype);
-    s->base = base;
-    s->irq = irq;
-    memcpy(s->macaddr, nd->macaddr, 6);
-
-    smc91c111_reset(s);
-
-    s->vc = qemu_new_vlan_client(nd->vlan, smc91c111_receive,
-                                 smc91c111_can_receive, s);
-    /* ??? Save/restore.  */
-}