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sana2.cpp
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sana2.cpp
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/*
* UAE - The Un*x Amiga Emulator
*
* SanaII emulation
*
* partially based on code from 3c589 PCMCIA driver by Neil Cafferke
*
* Copyright 2007 Toni Wilen
*
*/
#include "sysconfig.h"
#include "sysdeps.h"
#include "threaddep/thread.h"
#include "options.h"
#include "memory.h"
#include "custom.h"
#include "events.h"
#include "newcpu.h"
#include "autoconf.h"
#include "traps.h"
#include "execlib.h"
#include "native2amiga.h"
#include "blkdev.h"
#include "uae.h"
#include "sana2.h"
#include "win32_uaenet.h"
#include "execio.h"
#define SANA2NAME L"uaenet.device"
#define MAX_ASYNC_REQUESTS 200
#define MAX_OPEN_DEVICES 20
#define S2_START (CMD_NONSTD) // 9
#define S2_DEVICEQUERY (S2_START+ 0) // 9
#define S2_GETSTATIONADDRESS (S2_START+ 1) // 10
#define S2_CONFIGINTERFACE (S2_START+ 2) // 11
#define S2_ADDMULTICASTADDRESS (S2_START+ 5) // 14
#define S2_DELMULTICASTADDRESS (S2_START+ 6) // 15
#define S2_MULTICAST (S2_START+ 7) // 16
#define S2_BROADCAST (S2_START+ 8) // 17
#define S2_TRACKTYPE (S2_START+ 9) // 18
#define S2_UNTRACKTYPE (S2_START+10) // 19
#define S2_GETTYPESTATS (S2_START+11) // 20
#define S2_GETSPECIALSTATS (S2_START+12) // 21
#define S2_GETGLOBALSTATS (S2_START+13) // 22
#define S2_ONEVENT (S2_START+14) // 23
#define S2_READORPHAN (S2_START+15) // 24
#define S2_ONLINE (S2_START+16) // 25
#define S2_OFFLINE (S2_START+17) // 26
#define S2_ADDMULTICASTADDRESSES 0xC000
#define S2_DELMULTICASTADDRESSES 0xC001
#define S2_GETPEERADDRESS 0xC002
#define S2_GETDNSADDRESS 0xC003
#define S2_GETEXTENDEDGLOBALSTATS 0xC004
#define S2_CONNECT 0xC005
#define S2_DISCONNECT 0xC006
#define S2_SAMPLE_THROUGHPUT 0xC007
#define S2WireType_Ethernet 1
#define S2WireType_IEEE802 6
#define SANA2_MAX_ADDR_BITS (128)
#define SANA2_MAX_ADDR_BYTES ((SANA2_MAX_ADDR_BITS+7)/8)
#define ADDR_SIZE 6
#define ETH_HEADER_SIZE (ADDR_SIZE + ADDR_SIZE + 2)
#define S2ERR_NO_ERROR 0 /* peachy-keen */
#define S2ERR_NO_RESOURCES 1 /* resource allocation failure */
#define S2ERR_BAD_ARGUMENT 3 /* garbage somewhere */
#define S2ERR_BAD_STATE 4 /* inappropriate state */
#define S2ERR_BAD_ADDRESS 5 /* who? */
#define S2ERR_MTU_EXCEEDED 6 /* too much to chew */
#define S2ERR_NOT_SUPPORTED 8 /* hardware can't support cmd */
#define S2ERR_SOFTWARE 9 /* software error detected */
#define S2ERR_OUTOFSERVICE 10 /* driver is OFFLINE */
#define S2ERR_TX_FAILURE 11 /* Transmission attempt failed */
#define S2WERR_GENERIC_ERROR 0 /* no specific info available */
#define S2WERR_NOT_CONFIGURED 1 /* unit not configured */
#define S2WERR_UNIT_ONLINE 2 /* unit is currently online */
#define S2WERR_UNIT_OFFLINE 3 /* unit is currently offline */
#define S2WERR_ALREADY_TRACKED 4 /* protocol already tracked */
#define S2WERR_NOT_TRACKED 5 /* protocol not tracked */
#define S2WERR_BUFF_ERROR 6 /* buff mgt func returned error */
#define S2WERR_SRC_ADDRESS 7 /* source address problem */
#define S2WERR_DST_ADDRESS 8 /* destination address problem */
#define S2WERR_BAD_BROADCAST 9 /* broadcast address problem */
#define S2WERR_BAD_MULTICAST 10 /* multicast address problem */
#define S2WERR_MULTICAST_FULL 11 /* multicast address list full */
#define S2WERR_BAD_EVENT 12 /* unsupported event class */
#define S2WERR_BAD_STATDATA 13 /* statdata failed sanity check */
#define S2WERR_IS_CONFIGURED 15 /* attempt to config twice */
#define S2WERR_NULL_POINTER 16 /* null pointer detected */
#define S2WERR_TOO_MANY_RETIRES 17 /* tx failed - too many retries */
#define S2WERR_RCVREL_HDW_ERR 18 /* Driver fixable HW error */
#define S2EVENT_ERROR (1L<<0) /* error catch all */
#define S2EVENT_TX (1L<<1) /* transmitter error catch all */
#define S2EVENT_RX (1L<<2) /* receiver error catch all */
#define S2EVENT_ONLINE (1L<<3) /* unit is in service */
#define S2EVENT_OFFLINE (1L<<4) /* unit is not in service */
#define S2EVENT_BUFF (1L<<5) /* buff mgt function error */
#define S2EVENT_HARDWARE (1L<<6) /* hardware error catch all */
#define S2EVENT_SOFTWARE (1L<<7) /* software error catch all */
#define KNOWN_EVENTS (S2EVENT_ERROR|S2EVENT_TX|S2EVENT_RX|S2EVENT_ONLINE|\
S2EVENT_OFFLINE|S2EVENT_BUFF|S2EVENT_HARDWARE|S2EVENT_SOFTWARE)
#define SANA2OPB_MINE 0
#define SANA2OPF_MINE (1<<SANA2OPB_MINE)
#define SANA2OPB_PROM 1
#define SANA2OPF_PROM (1<<SANA2OPB_PROM)
#define SANA2IOB_RAW 7
#define SANA2IOF_RAW (1<<SANA2IOB_RAW)
#define SANA2IOB_BCAST 6
#define SANA2IOF_BCAST (1<<SANA2IOB_BCAST)
#define SANA2IOB_MCAST 5
#define SANA2IOF_MCAST (1<<SANA2IOB_MCAST)
#define S2_Dummy (TAG_USER + 0xB0000)
#define S2_CopyToBuff (S2_Dummy + 1)
#define S2_CopyFromBuff (S2_Dummy + 2)
#define S2_PacketFilter (S2_Dummy + 3)
#define S2_CopyToBuff16 (S2_Dummy + 4)
#define S2_CopyFromBuff16 (S2_Dummy + 5)
#define S2_CopyToBuff32 (S2_Dummy + 6)
#define S2_CopyFromBuff32 (S2_Dummy + 7)
#define S2_DMACopyToBuff32 (S2_Dummy + 8)
#define S2_DMACopyFromBuff32 (S2_Dummy + 9)
#define SANA2_IOREQSIZE (32 + 4 + 4 + SANA2_MAX_ADDR_BYTES * 2 + 4 + 4 + 4 + 4)
struct s2packet {
struct s2packet *next;
uae_u8 *data;
int len;
};
volatile int uaenet_int_requested;
volatile int uaenet_vsync_requested;
static int uaenet_int_late;
static uaecptr timerdevname;
static uaecptr ROM_netdev_resname = 0,
ROM_netdev_resid = 0,
ROM_netdev_init = 0;
static TCHAR *getdevname (void)
{
return L"uaenet.device";
}
struct asyncreq {
struct asyncreq *next;
uaecptr request;
struct s2packet *s2p;
int ready;
};
struct mcast {
struct mcast *next;
uae_u64 start;
uae_u64 end;
int cnt;
};
struct s2devstruct {
int unit, opencnt, exclusive, promiscuous;
struct asyncreq *ar;
struct asyncreq *s2p;
struct mcast *mc;
smp_comm_pipe requests;
int thread_running;
uae_sem_t sync_sem;
void *sysdata;
uae_u32 packetsreceived;
uae_u32 packetssent;
uae_u32 baddata;
uae_u32 overruns;
uae_u32 unknowntypesreceived;
uae_u32 reconfigurations;
uae_u32 online_micro;
uae_u32 online_secs;
int configured;
int adapter;
int online;
struct netdriverdata *td;
struct s2packet *readqueue;
uae_u8 mac[ADDR_SIZE];
int flush_timeout;
int flush_timeout_cnt;
};
#define FLUSH_TIMEOUT 20
struct priv_s2devstruct {
int inuse;
int unit;
int flags; /* OpenDevice() */
int promiscuous;
uae_u8 tracks[65536];
int trackcnt;
uae_u32 packetsreceived;
uae_u32 packetssent;
uae_u32 bytessent;
uae_u32 bytesreceived;
uae_u32 packetsdropped;
uaecptr copytobuff;
uaecptr copyfrombuff;
uaecptr packetfilter;
uaecptr tempbuf;
uaecptr timerbase;
struct netdriverdata *td;
int tmp;
};
static struct netdriverdata *td;
static struct s2devstruct devst[MAX_TOTAL_NET_DEVICES];
static struct priv_s2devstruct pdevst[MAX_OPEN_DEVICES];
static uae_u32 nscmd_cmd;
static uae_sem_t change_sem, async_sem;
static struct s2devstruct *gets2devstruct (int unit)
{
if (unit >= MAX_TOTAL_NET_DEVICES || unit < 0)
return 0;
return &devst[unit];
}
static struct priv_s2devstruct *getps2devstruct (uaecptr request)
{
int i = get_long (request + 24);
if (i < 0 || i >= MAX_OPEN_DEVICES || pdevst[i].inuse == 0) {
write_log (L"%s: corrupt iorequest %08X %d\n", SANA2NAME, request, i);
return 0;
}
return &pdevst[i];
}
static void *dev_thread (void *devs);
static int start_thread (struct s2devstruct *dev)
{
if (dev->thread_running)
return 1;
init_comm_pipe (&dev->requests, 100, 1);
uae_sem_init (&dev->sync_sem, 0, 0);
uae_start_thread (SANA2NAME, dev_thread, dev, NULL);
uae_sem_wait (&dev->sync_sem);
return dev->thread_running;
}
static uae_u32 REGPARAM2 dev_close_2 (TrapContext *context)
{
uae_u32 request = m68k_areg (regs, 1);
struct priv_s2devstruct *pdev = getps2devstruct (request);
struct s2devstruct *dev;
if (!pdev) {
write_log (L"%s close with unknown request %08X!?\n", SANA2NAME, request);
return 0;
}
dev = gets2devstruct (pdev->unit);
if (!dev) {
write_log (L"%s:%d close with unknown request %08X!?\n", SANA2NAME, pdev->unit, request);
return 0;
}
if (log_net)
write_log (L"%s:%d close, open=%d req=%08X\n", SANA2NAME, pdev->unit, dev->opencnt, request);
put_long (request + 24, 0);
dev->opencnt--;
pdev->inuse = 0;
if (!dev->opencnt) {
dev->exclusive = 0;
if (pdev->tempbuf) {
m68k_areg (regs, 1) = pdev->tempbuf;
m68k_dreg (regs, 0) = pdev->td->mtu + ETH_HEADER_SIZE + 2;
CallLib (context, get_long (4), -0xD2); /* FreeMem */
pdev->tempbuf = 0;
}
uaenet_close (dev->sysdata);
xfree (dev->sysdata);
dev->sysdata = NULL;
write_comm_pipe_u32 (&dev->requests, 0, 1);
write_log (L"%s: opencnt == 0, all instances closed\n", SANA2NAME);
}
put_word (m68k_areg (regs, 6) + 32, get_word (m68k_areg (regs, 6) + 32) - 1);
return 0;
}
static uae_u32 REGPARAM2 dev_close (TrapContext *context)
{
return dev_close_2 (context);
}
static uae_u32 REGPARAM2 diskdev_close (TrapContext *context)
{
return dev_close_2 (context);
}
static int openfail (uaecptr ioreq, int error)
{
put_long (ioreq + 20, -1);
put_byte (ioreq + 31, error);
put_long (ioreq + 32, 0); /* io_device */
if (log_net)
write_log (L"-> failed with error %d\n", error);
return (uae_u32)-1;
}
static uae_u32 REGPARAM2 uaenet_int_handler (TrapContext *ctx);
static int irq_init;
static int initint (TrapContext *ctx)
{
uae_u32 tmp1;
uaecptr p;
if (irq_init)
return 1;
m68k_dreg (regs, 0) = 26;
m68k_dreg (regs, 1) = 65536 + 1;
p = CallLib (ctx, get_long (4), -0xC6); /* AllocMem */
if (!p)
return 0;
tmp1 = here ();
calltrap (deftrap2 (uaenet_int_handler, TRAPFLAG_EXTRA_STACK, L"uaenet_int_handler"));
put_word (p + 8, 0x020a);
put_long (p + 10, ROM_netdev_resid);
put_long (p + 18, tmp1);
m68k_areg (regs, 1) = p;
m68k_dreg (regs, 0) = 13; /* EXTER */
dw (0x4a80); /* TST.L D0 */
dw (0x4e75); /* RTS */
CallLib (ctx, get_long (4), -168); /* AddIntServer */
irq_init = 1;
return 1;
}
static uae_u32 REGPARAM2 dev_open_2 (TrapContext *context)
{
uaecptr ioreq = m68k_areg (regs, 1);
uae_u32 unit = m68k_dreg (regs, 0);
uae_u32 flags = m68k_dreg (regs, 1);
uaecptr buffermgmt;
struct s2devstruct *dev = gets2devstruct (unit);
struct priv_s2devstruct *pdev = 0;
int i;
uaecptr tagp, tagpnext;
if (!dev)
return openfail (ioreq, IOERR_OPENFAIL);
if (!initint(context))
return openfail (ioreq, IOERR_SELFTEST);
if (log_net)
write_log (L"opening %s:%d opencnt=%d ioreq=%08X\n", SANA2NAME, unit, dev->opencnt, ioreq);
if (get_word (ioreq + 0x12) < IOSTDREQ_SIZE)
return openfail (ioreq, IOERR_BADLENGTH);
if ((flags & SANA2OPF_PROM) && dev->opencnt > 0)
return openfail (ioreq, IOERR_UNITBUSY);
for (i = 0; i < MAX_OPEN_DEVICES; i++) {
pdev = &pdevst[i];
if (pdev->inuse == 0)
break;
}
if (i == MAX_OPEN_DEVICES)
return openfail (ioreq, IOERR_UNITBUSY);
put_long (ioreq + 24, pdev - pdevst);
pdev->unit = unit;
pdev->flags = flags;
pdev->inuse = 1;
pdev->td = &td[unit];
pdev->promiscuous = (flags & SANA2OPF_PROM) ? 1 : 0;
if (pdev->td->active == 0)
return openfail (ioreq, IOERR_OPENFAIL);
if (dev->opencnt == 0) {
dev->unit = unit;
dev->sysdata = xcalloc (uae_u8, uaenet_getdatalenght ());
if (!uaenet_open (dev->sysdata, pdev->td, dev, uaenet_gotdata, uaenet_getdata, pdev->promiscuous)) {
xfree (dev->sysdata);
dev->sysdata = NULL;
return openfail (ioreq, IOERR_OPENFAIL);
}
write_log (L"%s: initializing unit %d\n", getdevname (), unit);
dev->td = pdev->td;
dev->adapter = pdev->td->active;
if (dev->adapter) {
dev->online = 1;
dev->configured = 1;
}
start_thread (dev);
}
if (kickstart_version >= 36) {
m68k_areg (regs, 0) = get_long (4) + 350;
m68k_areg (regs, 1) = timerdevname;
CallLib (context, get_long (4), -0x114); /* FindName('timer.device') */
pdev->timerbase = m68k_dreg (regs, 0);
}
pdev->copyfrombuff = pdev->copytobuff = pdev->packetfilter = 0;
pdev->tempbuf = 0;
if (get_word (ioreq + 0x12) >= SANA2_IOREQSIZE) {
buffermgmt = get_long (ioreq + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES * 2 + 4 + 4 + 4);
tagpnext = buffermgmt;
while (tagpnext) {
uae_u32 tag = get_long (tagpnext);
uae_u32 val = get_long (tagpnext + 4);
tagp = tagpnext;
tagpnext += 8;
switch (tag)
{
case TAG_DONE:
tagpnext = 0;
break;
case TAG_IGNORE:
break;
case TAG_MORE:
tagpnext = val;
break;
case TAG_SKIP:
tagpnext = tagp + val * 8;
break;
case S2_CopyToBuff:
pdev->copytobuff = val;
break;
case S2_CopyFromBuff:
pdev->copyfrombuff = val;
break;
case S2_PacketFilter:
pdev->packetfilter = val;
break;
}
}
if (log_net)
write_log (L"%s:%d CTB=%08x CFB=%08x PF=%08x\n",
getdevname(), unit, pdev->copytobuff, pdev->copyfrombuff, pdev->packetfilter);
m68k_dreg (regs, 0) = dev->td->mtu + ETH_HEADER_SIZE + 2;
m68k_dreg (regs, 1) = 1;
pdev->tempbuf = CallLib (context, get_long (4), -0xC6); /* AllocMem */
if (!pdev->tempbuf) {
if (dev->opencnt == 0) {
uaenet_close (dev->sysdata);
xfree (dev->sysdata);
dev->sysdata = NULL;
}
return openfail (ioreq, S2ERR_BAD_ARGUMENT);
}
/* buffermanagement */
put_long (ioreq + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES * 2 + 4 + 4 + 4, pdev->tempbuf);
}
dev->exclusive = flags & SANA2OPF_MINE;
dev->opencnt++;
put_word (m68k_areg (regs, 6) + 32, get_word (m68k_areg (regs, 6) + 32) + 1);
put_byte (ioreq + 31, 0);
put_byte (ioreq + 8, 7);
return 0;
}
static uae_u32 REGPARAM2 dev_open (TrapContext *context)
{
return dev_open_2 (context);
}
static uae_u32 REGPARAM2 dev_expunge (TrapContext *context)
{
return 0;
}
static uae_u32 REGPARAM2 diskdev_expunge (TrapContext *context)
{
return 0;
}
static void freepacket (struct s2packet *s2p)
{
xfree (s2p->data);
xfree (s2p);
}
static void add_async_packet (struct s2devstruct *dev, struct s2packet *s2p, uaecptr request)
{
struct asyncreq *ar, *ar2;
ar = xcalloc (struct asyncreq, 1);
ar->s2p = s2p;
if (!dev->s2p) {
dev->s2p = ar;
} else {
ar2 = dev->s2p;
while (ar2->next)
ar2 = ar2->next;
ar2->next = ar;
}
ar->request = request;
}
static void rem_async_packet (struct s2devstruct *dev, uaecptr request)
{
struct asyncreq *ar, *prevar;
uae_sem_wait (&async_sem);
ar = dev->s2p;
prevar = NULL;
while (ar) {
if (ar->request == request) {
if (prevar == NULL)
dev->s2p = ar->next;
else
prevar->next = ar->next;
uae_sem_post (&async_sem);
freepacket (ar->s2p);
xfree (ar);
return;
}
prevar = ar;
ar = ar->next;
}
uae_sem_post (&async_sem);
}
static struct asyncreq *get_async_request (struct s2devstruct *dev, uaecptr request, int ready)
{
struct asyncreq *ar;
int ret = 0;
uae_sem_wait (&async_sem);
ar = dev->ar;
while (ar) {
if (ar->request == request) {
if (ready)
ar->ready = 1;
break;
}
ar = ar->next;
}
uae_sem_post (&async_sem);
return ar;
}
static int add_async_request (struct s2devstruct *dev, uaecptr request)
{
struct asyncreq *ar, *ar2;
if (log_net)
write_log (L"%s:%d async request %x added\n", getdevname(), dev->unit, request);
uae_sem_wait (&async_sem);
ar = xcalloc (struct asyncreq, 1);
ar->request = request;
if (!dev->ar) {
dev->ar = ar;
} else {
ar2 = dev->ar;
while (ar2->next)
ar2 = ar2->next;
ar2->next = ar;
}
uae_sem_post (&async_sem);
return 1;
}
static int release_async_request (struct s2devstruct *dev, uaecptr request)
{
struct asyncreq *ar, *prevar;
uae_sem_wait (&async_sem);
ar = dev->ar;
prevar = NULL;
while (ar) {
if (ar->request == request) {
if (prevar == NULL)
dev->ar = ar->next;
else
prevar->next = ar->next;
uae_sem_post (&async_sem);
xfree (ar);
if (log_net)
write_log (L"%s:%d async request %x removed\n", getdevname(), dev->unit, request);
return 1;
}
prevar = ar;
ar = ar->next;
}
uae_sem_post (&async_sem);
write_log (L"%s:%d async request %x not found for removal!\n", getdevname(), dev->unit, request);
return 0;
}
static void do_abort_async (struct s2devstruct *dev, uaecptr request)
{
put_byte (request + 30, get_byte (request + 30) | 0x20);
put_byte (request + 31, IOERR_ABORTED);
put_long (request + 32, S2WERR_GENERIC_ERROR);
write_comm_pipe_u32 (&dev->requests, request, 1);
}
static void abort_async (struct s2devstruct *dev, uaecptr request)
{
struct asyncreq *ar = get_async_request (dev, request, 1);
if (!ar) {
write_log (L"%s:%d: abort async but no request %x found!\n", getdevname(), dev->unit, request);
return;
}
if (log_net)
write_log (L"%s:%d asyncronous request=%08X aborted\n", getdevname(), dev->unit, request);
do_abort_async (dev, request);
}
static void signalasync (struct s2devstruct *dev, struct asyncreq *ar, int actual, int err)
{
uaecptr request = ar->request;
int command = get_word (request + 28);
if (log_net)
write_log (L"%s:%d CMD=%d async request %x completed\n", getdevname(), dev->unit, command, request);
put_long (request + 32, actual);
put_byte (request + 31, err);
ar->ready = 1;
write_comm_pipe_u32 (&dev->requests, request, 1);
}
static uae_u32 copytobuff (TrapContext *ctx, uaecptr from, uaecptr to, uae_u32 len, uaecptr func)
{
m68k_areg (regs, 0) = to;
m68k_areg (regs, 1) = from;
m68k_dreg (regs, 0) = len;
return CallFunc (ctx, func);
}
static uae_u32 copyfrombuff (TrapContext *ctx, uaecptr from, uaecptr to, uae_u32 len, uaecptr func)
{
m68k_areg (regs, 0) = to;
m68k_areg (regs, 1) = from;
m68k_dreg (regs, 0) = len;
return CallFunc (ctx, func);
}
static uae_u32 packetfilter (TrapContext *ctx, uaecptr hook, uaecptr ios2, uaecptr data)
{
uae_u32 a2, v;
a2 = m68k_areg (regs, 2);
m68k_areg (regs, 0) = hook;
m68k_areg (regs, 2) = ios2;
m68k_areg (regs, 1) = data;
v = CallFunc (ctx, get_long (hook + 8));
m68k_areg (regs, 2) = a2;
return v;
}
static int isbroadcast (const uae_u8 *d)
{
if (d[0] == 0xff && d[1] == 0xff && d[2] == 0xff &&
d[3] == 0xff && d[4] == 0xff && d[5] == 0xff)
return 1;
return 0;
}
static int ismulticast (const uae_u8 *d)
{
if (isbroadcast (d))
return 0;
if (d[0] & 1)
return 1;
return 0;
}
static uae_u64 addrto64 (const uae_u8 *d)
{
int i;
uae_u64 addr = 0;
for (i = 0; i < ADDR_SIZE; i++) {
addr <<= 8;
addr |= d[i];
}
return addr;
}
static uae_u64 amigaaddrto64 (uaecptr d)
{
int i;
uae_u64 addr = 0;
for (i = 0; i < ADDR_SIZE; i++) {
addr <<= 8;
addr |= get_byte (d + i);
}
return addr;
}
static void addmulticastaddresses (struct s2devstruct *dev, uae_u64 start, uae_u64 end)
{
struct mcast *mc, *mc2;
if (!end)
end = start;
mc = dev->mc;
while (mc) {
if (start == mc->start && end == mc->end) {
mc->cnt++;
return;
}
mc = mc->next;
}
mc = xcalloc (struct mcast, 1);
mc->start = start;
mc->end = end;
mc->cnt = 1;
if (!dev->mc) {
dev->mc = mc;
} else {
mc2 = dev->mc;
while (mc2->next)
mc2 = mc2->next;
mc2->next = mc;
}
}
static int delmulticastaddresses (struct s2devstruct *dev, uae_u64 start, uae_u64 end)
{
struct mcast *mc, *prevmc;
if (!end)
end = start;
mc = dev->mc;
prevmc = NULL;
while (mc) {
if (start == mc->start && end == mc->end) {
mc->cnt--;
if (mc->cnt > 0)
return 1;
if (prevmc == NULL)
dev->mc = mc->next;
else
prevmc->next = mc->next;
xfree (mc);
return 1;
}
prevmc = mc;
mc = mc->next;
}
return 0;
}
static struct s2packet *createreadpacket (struct s2devstruct *dev, const uae_u8 *d, int len)
{
struct s2packet *s2p = xcalloc (struct s2packet, 1);
s2p->data = xmalloc (uae_u8, dev->td->mtu + ETH_HEADER_SIZE + 2);
memcpy (s2p->data, d, len);
s2p->len = len;
return s2p;
}
static int handleread (TrapContext *ctx, struct priv_s2devstruct *pdev, uaecptr request, uae_u8 *d, int len, int cmd)
{
uae_u8 flags = get_byte (request + 30);
uaecptr data = get_long (request + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES * 2 + 4);
uaecptr srcaddr = request + 32 + 4 + 4;
uaecptr dstaddr = request + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES;
uae_u16 type = (d[2 * ADDR_SIZE] << 8) | d[2 * ADDR_SIZE + 1];
uae_u32 v = 0;
uaecptr data2;
memcpyha_safe (pdev->tempbuf, d, len);
memcpyha_safe (dstaddr, d, ADDR_SIZE);
memcpyha_safe (srcaddr, d + ADDR_SIZE, ADDR_SIZE);
put_long (request + 32 + 4, type);
if (pdev->tracks[type]) {
pdev->bytesreceived += len;
pdev->packetsreceived++;
}
flags &= ~(SANA2IOF_BCAST | SANA2IOF_MCAST);
if (isbroadcast (d))
flags |= SANA2IOF_BCAST;
else if (ismulticast (d))
flags |= SANA2IOF_MCAST;
put_byte (request + 30, flags);
data2 = pdev->tempbuf;
if (!(flags & SANA2IOF_RAW)) {
len -= ETH_HEADER_SIZE;
data2 += ETH_HEADER_SIZE;
}
put_long (request + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES * 2, len);
if (pdev->packetfilter && cmd == CMD_READ && packetfilter (ctx, pdev->packetfilter, request, data2) == 0)
return 0;
if (!copytobuff (ctx, data2, data, len, pdev->copytobuff)) {
put_long (request + 32, S2WERR_BUFF_ERROR);
put_byte (request + 31, S2ERR_NO_RESOURCES);
}
return 1;
}
void uaenet_gotdata (struct s2devstruct *dev, const uae_u8 *d, int len)
{
uae_u16 type;
struct mcast *mc;
struct s2packet *s2p;
if (!dev->online)
return;
/* drop if bogus size */
if (len < ETH_HEADER_SIZE || len >= dev->td->mtu + ETH_HEADER_SIZE + 2)
return;
/* drop if dst == broadcast and src == me */
if (isbroadcast (d) && !memcmp (d + 6, dev->td->mac, ADDR_SIZE))
return;
/* drop if not promiscuous and dst != broadcast and dst != me */
if (!dev->promiscuous && !isbroadcast (d) && memcmp (d, dev->td->mac, ADDR_SIZE))
return;
/* drop if multicast with unknown address */
if (ismulticast (d)) {
uae_u64 mac64 = addrto64 (d);
/* multicast */
mc = dev->mc;
while (mc) {
if (mac64 >= mc->start && mac64 <= mc->end)
break;
mc = mc->next;
}
if (!mc)
return;
}
type = (d[12] << 8) | d[13];
s2p = createreadpacket (dev, d, len);
if (log_net)
write_log (L"<-DST:%02X.%02X.%02X.%02X.%02X.%02X SRC:%02X.%02X.%02X.%02X.%02X.%02X E=%04X L=%d P=%p\n",
d[0], d[1], d[2], d[3], d[4], d[5],
d[6], d[7], d[8], d[9], d[10], d[11],
type, len, s2p);
uae_sem_wait (&async_sem);
if (!dev->readqueue) {
dev->readqueue = s2p;
} else {
struct s2packet *s2p2 = dev->readqueue;
while (s2p2->next)
s2p2 = s2p2->next;
s2p2->next = s2p;
}
uaenet_int_requested = 1;
uae_sem_post (&async_sem);
}
static struct s2packet *createwritepacket (TrapContext *ctx, uaecptr request)
{
uae_u8 flags = get_byte (request + 30);
uae_u32 datalength = get_long (request + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES * 2);
uaecptr data = get_long (request + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES * 2 + 4);
uaecptr srcaddr = request + 32 + 4 + 4;
uaecptr dstaddr = request + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES;
uae_u16 packettype = get_long (request + 32 + 4);
struct priv_s2devstruct *pdev = getps2devstruct (request);
struct s2packet *s2p;
if (!pdev)
return NULL;
if (!copyfrombuff (ctx, data, pdev->tempbuf, datalength, pdev->copyfrombuff))
return NULL;
s2p = xcalloc (struct s2packet, 1);
s2p->data = xmalloc (uae_u8, pdev->td->mtu + ETH_HEADER_SIZE + 2);
if (flags & SANA2IOF_RAW) {
memcpyah_safe (s2p->data, pdev->tempbuf, datalength);
packettype = (s2p->data[2 * ADDR_SIZE + 0] << 8) | (s2p->data[2 * ADDR_SIZE + 1]);
s2p->len = datalength;
} else {
memcpyah_safe (s2p->data + ETH_HEADER_SIZE, pdev->tempbuf, datalength);
memcpy (s2p->data + ADDR_SIZE, pdev->td->mac, ADDR_SIZE);
memcpyah_safe (s2p->data, dstaddr, ADDR_SIZE);
s2p->data[2 * ADDR_SIZE + 0] = packettype >> 8;
s2p->data[2 * ADDR_SIZE + 1] = packettype;
s2p->len = datalength + ETH_HEADER_SIZE;
}
if (pdev->tracks[packettype]) {
pdev->packetssent++;
pdev->bytessent += datalength;
}
return s2p;
}
static int uaenet_getdata (struct s2devstruct *dev, uae_u8 *d, int *len)
{
int gotit;
struct asyncreq *ar;
uae_sem_wait (&async_sem);
ar = dev->ar;
gotit = 0;
while (ar && !gotit) {
if (!ar->ready) {
uaecptr request = ar->request;
int command = get_word (request + 28);
uae_u32 packettype = get_long (request + 32 + 4);
if (command == CMD_WRITE || command == S2_BROADCAST || command == S2_MULTICAST) {
struct priv_s2devstruct *pdev = getps2devstruct (request);
struct asyncreq *ars2p = dev->s2p;
while (ars2p) {
if (ars2p->request == request) {
*len = ars2p->s2p->len;
memcpy (d, ars2p->s2p->data, *len);
if (log_net)
write_log (L"->DST:%02X.%02X.%02X.%02X.%02X.%02X SRC:%02X.%02X.%02X.%02X.%02X.%02X E=%04X S=%d\n",
d[0], d[1], d[2], d[3], d[4], d[5],
d[6], d[7], d[8], d[9], d[10], d[11],
packettype, *len);
gotit = 1;
dev->packetssent++;
signalasync (dev, ar, *len, 0);
break;
}
ars2p = ars2p->next;
}
}
}
ar = ar->next;
}
uae_sem_post (&async_sem);
return gotit;
}
void checkevents (struct s2devstruct *dev, int mask, int sem)
{
struct asyncreq *ar;
if (sem)
uae_sem_wait (&async_sem);
ar = dev->ar;
while (ar) {
if (!ar->ready) {
uaecptr request = ar->request;
int command = get_word (request + 28);
uae_u32 cmask = get_long (request + 32);
if (command == S2_ONEVENT && (mask & cmask))
signalasync (dev, ar, 0, 0);
}
ar = ar->next;
}
if (sem)
uae_sem_post (&async_sem);
}
static int checksize (uaecptr request, struct s2devstruct *dev)
{
uae_u32 datalength = get_long (request + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES * 2);
if (datalength > dev->td->mtu)
return 0;
return 1;
}
static void flush (struct priv_s2devstruct *pdev)
{
struct asyncreq *ar;
struct s2devstruct *dev;
dev = gets2devstruct (pdev->unit);
ar = dev->ar;
while (ar) {
if (!ar->ready && getps2devstruct (ar->request) == pdev) {
ar->ready = 1;
do_abort_async (dev, ar->request);
}
ar = ar->next;
}
}
static int dev_do_io_2 (struct s2devstruct *dev, uaecptr request, int quick)
{
uae_u8 flags = get_byte (request + 30);
uae_u32 command = get_word (request + 28);
uae_u32 packettype = get_long (request + 32 + 4);
uaecptr data = get_long (request + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES * 2 + 4);
uae_u32 datalength = get_long (request + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES * 2);
uaecptr srcaddr = request + 32 + 4 + 4;
uaecptr dstaddr = request + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES;
uaecptr statdata = get_long (request + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES * 2 + 4 + 4);
uaecptr buffermgmt = get_long (request + 32 + 4 + 4 + SANA2_MAX_ADDR_BYTES * 2 + 4 + 4 + 4);
uae_u32 io_error = 0;
uae_u32 wire_error = 0;
int i;
int async = 0;
struct priv_s2devstruct *pdev = getps2devstruct (request);
if (log_net)
write_log (L"S2: C=%02d T=%04X S=%02X%02X%02X%02X%02X%02X D=%02X%02X%02X%02X%02X%02X L=%d D=%08X SD=%08X BM=%08X\n",
command, packettype,
get_byte (srcaddr + 0), get_byte (srcaddr + 1), get_byte (srcaddr + 2), get_byte (srcaddr + 3), get_byte (srcaddr + 4), get_byte (srcaddr + 5),
get_byte (dstaddr + 0), get_byte (dstaddr + 1), get_byte (dstaddr + 2), get_byte (dstaddr + 3), get_byte (dstaddr + 4), get_byte (dstaddr + 5),
datalength, data, statdata, buffermgmt);
if (command == CMD_READ || command == S2_READORPHAN || command == CMD_WRITE || command == S2_BROADCAST || command == S2_MULTICAST) {
if (!pdev->copyfrombuff || !pdev->copytobuff) {
io_error = S2ERR_BAD_ARGUMENT;
wire_error = S2WERR_BUFF_ERROR;
goto end;
}
}