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minix/drivers/fxp/fxp.c
Cristiano Giuffrida cb176df60f New RS and new signal handling for system processes. 
UPDATING INFO:
20100317:
        /usr/src/etc/system.conf updated to ignore default kernel calls: copy
        it (or merge it) to /etc/system.conf.
        The hello driver (/dev/hello) added to the distribution:
        # cd /usr/src/commands/scripts && make clean install
        # cd /dev && MAKEDEV hello

KERNEL CHANGES:
- Generic signal handling support. The kernel no longer assumes PM as a signal
manager for every process. The signal manager of a given process can now be
specified in its privilege slot. When a signal has to be delivered, the kernel
performs the lookup and forwards the signal to the appropriate signal manager.
PM is the default signal manager for user processes, RS is the default signal
manager for system processes. To enable ptrace()ing for system processes, it
is sufficient to change the default signal manager to PM. This will temporarily
disable crash recovery, though.
- sys_exit() is now split into sys_exit() (i.e. exit() for system processes,
which generates a self-termination signal), and sys_clear() (i.e. used by PM
to ask the kernel to clear a process slot when a process exits).
- Added a new kernel call (i.e. sys_update()) to swap two process slots and
implement live update.

PM CHANGES:
- Posix signal handling is no longer allowed for system processes. System
signals are split into two fixed categories: termination and non-termination
signals. When a non-termination signaled is processed, PM transforms the signal
into an IPC message and delivers the message to the system process. When a
termination signal is processed, PM terminates the process.
- PM no longer assumes itself as the signal manager for system processes. It now
makes sure that every system signal goes through the kernel before being
actually processes. The kernel will then dispatch the signal to the appropriate
signal manager which may or may not be PM.

SYSLIB CHANGES:
- Simplified SEF init and LU callbacks.
- Added additional predefined SEF callbacks to debug crash recovery and
live update.
- Fixed a temporary ack in the SEF init protocol. SEF init reply is now
completely synchronous.
- Added SEF signal event type to provide a uniform interface for system
processes to deal with signals. A sef_cb_signal_handler() callback is
available for system processes to handle every received signal. A
sef_cb_signal_manager() callback is used by signal managers to process
system signals on behalf of the kernel.
- Fixed a few bugs with memory mapping and DS.

VM CHANGES:
- Page faults and memory requests coming from the kernel are now implemented
using signals.
- Added a new VM call to swap two process slots and implement live update.
- The call is used by RS at update time and in turn invokes the kernel call
sys_update().

RS CHANGES:
- RS has been reworked with a better functional decomposition.
- Better kernel call masks. com.h now defines the set of very basic kernel calls
every system service is allowed to use. This makes system.conf simpler and
easier to maintain. In addition, this guarantees a higher level of isolation
for system libraries that use one or more kernel calls internally (e.g. printf).
- RS is the default signal manager for system processes. By default, RS
intercepts every signal delivered to every system process. This makes crash
recovery possible before bringing PM and friends in the loop.
- RS now supports fast rollback when something goes wrong while initializing
the new version during a live update.
- Live update is now implemented by keeping the two versions side-by-side and
swapping the process slots when the old version is ready to update.
- Crash recovery is now implemented by keeping the two versions side-by-side
and cleaning up the old version only when the recovery process is complete.

DS CHANGES:
- Fixed a bug when the process doing ds_publish() or ds_delete() is not known
by DS.
- Fixed the completely broken support for strings. String publishing is now
implemented in the system library and simply wraps publishing of memory ranges.
Ideally, we should adopt a similar approach for other data types as well.
- Test suite fixed.

DRIVER CHANGES:
- The hello driver has been added to the Minix distribution to demonstrate basic
live update and crash recovery functionalities.
- Other drivers have been adapted to conform the new SEF interface.
2010-03-17 01:15:29 +00:00

2997 lines
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/*
* fxp.c
*
* This file contains an ethernet device driver for Intel 82557, 82558,
* 82559, 82550, and 82562 fast ethernet controllers.
*
* The valid messages and their parameters are:
*
* m_type DL_PORT DL_PROC DL_COUNT DL_MODE DL_ADDR DL_GRANT
* |------------+----------+---------+----------+---------+---------+---------|
* | HARDINT | | | | | | |
* |------------|----------|---------|----------|---------|---------|---------|
* | DL_WRITE | port nr | proc nr | count | mode | address | |
* |------------|----------|---------|----------|---------|---------|---------|
* | DL_WRITEV | port nr | proc nr | count | mode | address | |
* |------------|----------|---------|----------|---------|---------|---------|
* | DL_WRITEV_S| port nr | proc nr | count | mode | | grant |
* |------------|----------|---------|----------|---------|---------|---------|
* | DL_READ | port nr | proc nr | count | | address | |
* |------------|----------|---------|----------|---------|---------|---------|
* | DL_READV | port nr | proc nr | count | | address | |
* |------------|----------|---------|----------|---------|---------|---------|
* | DL_READV_S | port nr | proc nr | count | | | grant |
* |------------|----------|---------|----------|---------|---------|---------|
* | DL_CONF | port nr | proc nr | | mode | address | |
* |------------|----------|---------|----------|---------|---------|---------|
* | DL_GETSTAT | port nr | proc nr | | | address | |
* |------------|----------|---------|----------|---------|---------|---------|
* |DL_GETSTAT_S| port nr | proc nr | | | | grant |
* |------------|----------|---------|----------|---------|---------|---------|
* | DL_STOP | port_nr | | | | | |
* |------------+----------+---------+----------+---------+---------+---------|
*
* The messages sent are:
*
* m-type DL_PORT DL_PROC DL_COUNT DL_STAT DL_CLCK
* |-------------+----------+---------+----------+---------+---------|
* |DL_TASK_REPLY| port nr | proc nr | rd-count | err|stat| clock |
* |-------------+----------+---------+----------+---------+---------|
*
* m_type m3_i1 m3_i2 m3_ca1
* |-------------+---------+-----------+---------------|
* |DL_CONF_REPLY| port nr | last port | ethernet addr |
* |-------------+---------+-----------+---------------|
*
* m_type DL_PORT DL_STAT
* |------------|---------|-----------|
* |DL_STAT_REPL| port nr | err |
* |------------|---------|-----------|
*
*
* Created: Nov 2004 by Philip Homburg <philip@f-mnx.phicoh.com>
*/
#include "../drivers.h"
#include <stdlib.h>
#include <net/hton.h>
#include <net/gen/ether.h>
#include <net/gen/eth_io.h>
#include <machine/pci.h>
#include <minix/ds.h>
#include <minix/endpoint.h>
#include <timers.h>
#define tmra_ut timer_t
#define tmra_inittimer(tp) tmr_inittimer(tp)
#define debug 0
#define RAND_UPDATE /**/
#define printW() ((void)0)
#include "assert.h"
#include "fxp.h"
#include "mii.h"
/* Number of receive buffers */
#define N_RX_BUF 40
/* Number of transmit buffers */
#define N_TX_BUF 4
/* I/O vectors are handled IOVEC_NR entries at a time. */
#define IOVEC_NR 16
/* Configuration */
#define FXP_ENVVAR "FXPETH"
struct pcitab
{
u16_t vid;
u16_t did;
int checkclass;
};
PRIVATE struct pcitab pcitab_fxp[]=
{
{ 0x8086, 0x1229, 0 }, /* Intel 82557, etc. */
{ 0x8086, 0x2449, 0 }, /* Intel 82801BA/BAM/CA/CAM */
{ 0x8086, 0x103d, 0 }, /* Intel 82801DB */
{ 0x8086, 0x1064, 0 }, /* Intel 82562 */
{ 0x0000, 0x0000, 0 }
};
#define FXP_PORT_NR 1 /* Minix */
typedef int irq_hook_t;
static timer_t *fxp_timers= NULL;
static clock_t fxp_next_timeout= 0;
/* ignore interrupt for the moment */
#define interrupt(x) 0
PRIVATE union tmpbuf
{
char pad[4096];
struct cbl_conf cc;
struct ias ias;
} *tmpbufp;
typedef struct fxp
{
port_t fxp_base_port;
int fxp_mode;
int fxp_got_int;
int fxp_send_int;
int fxp_flags;
int fxp_client;
int fxp_features; /* Needed? */
int fxp_irq;
int fxp_type; /* What kind of hardware */
int fxp_ee_addrlen; /* #EEPROM address bits */
int fxp_tx_alive;
int fxp_need_reset;
/* Rx */
vir_bytes fxp_read_s;
int fxp_rx_nbuf;
int fxp_rx_bufsize;
struct rfd *fxp_rx_buf;
phys_bytes fxp_rx_busaddr;
int fxp_rx_head;
int fxp_rx_need_restart;
int fxp_need_conf; /* Re-configure after draining send
* queue
*/
/* Tx */
int fxp_tx_nbuf;
int fxp_tx_bufsize;
struct tx *fxp_tx_buf;
phys_bytes fxp_tx_busaddr;
int fxp_tx_idle;
int fxp_tx_head;
int fxp_tx_tail;
int fxp_tx_threshold;
/* Link status */
int fxp_report_link;
int fxp_link_up;
int fxp_mii_busy;
u16_t fxp_mii_scr;
/* PCI related */
int fxp_seen; /* TRUE iff device available */
u8_t fxp_pcibus;
u8_t fxp_pcidev;
u8_t fxp_pcifunc;
/* 'large' items */
irq_hook_t fxp_hook;
ether_addr_t fxp_address;
message fxp_rx_mess;
message fxp_tx_mess;
struct sc fxp_stat;
u8_t fxp_conf_bytes[CC_BYTES_NR];
char fxp_name[sizeof("fxp#n")];
iovec_t fxp_iovec[IOVEC_NR];
iovec_s_t fxp_iovec_s[IOVEC_NR];
}
fxp_t;
/* fxp_mode */
#define FM_DISABLED 0x0
#define FM_ENABLED 0x1
/* fxp_flags */
#define FF_EMPTY 0x000
#define FF_PACK_SENT 0x001
#define FF_PACK_RECV 0x002
#define FF_SEND_AVAIL 0x004
#define FF_READING 0x010
#define FF_PROMISC 0x040
#define FF_MULTI 0x080
#define FF_BROAD 0x100
#define FF_ENABLED 0x200
/* fxp_features */
#define FFE_NONE 0x0
/* fxp_type */
#define FT_UNKNOWN 0x0
#define FT_82557 0x1
#define FT_82558A 0x2
#define FT_82559 0x4
#define FT_82801 0x8
PRIVATE fxp_t *fxp_table;
PRIVATE phys_bytes fxp_table_phys;
PRIVATE u16_t eth_ign_proto;
PRIVATE tmra_ut fxp_watchdog;
PRIVATE const char *progname;
PRIVATE u32_t system_hz;
#define fxp_inb(port, offset) (do_inb((port) + (offset)))
#define fxp_inl(port, offset) (do_inl((port) + (offset)))
#define fxp_outb(port, offset, value) (do_outb((port) + (offset), (value)))
#define fxp_outl(port, offset, value) (do_outl((port) + (offset), (value)))
_PROTOTYPE( static void fxp_init, (message *mp) );
_PROTOTYPE( static void fxp_pci_conf, (void) );
_PROTOTYPE( static int fxp_probe, (fxp_t *fp) );
_PROTOTYPE( static void fxp_conf_hw, (fxp_t *fp) );
_PROTOTYPE( static void fxp_init_hw, (fxp_t *fp) );
_PROTOTYPE( static void fxp_init_buf, (fxp_t *fp) );
_PROTOTYPE( static void fxp_reset_hw, (fxp_t *fp) );
_PROTOTYPE( static void fxp_confaddr, (fxp_t *fp) );
_PROTOTYPE( static void fxp_rec_mode, (fxp_t *fp) );
_PROTOTYPE( static void fxp_writev, (message *mp, int from_int,
int vectored) );
_PROTOTYPE( static void fxp_writev_s, (message *mp, int from_int) );
_PROTOTYPE( static void fxp_readv, (message *mp, int from_int,
int vectored) );
_PROTOTYPE( static void fxp_readv_s, (message *mp, int from_int) );
_PROTOTYPE( static void fxp_do_conf, (fxp_t *fp) );
_PROTOTYPE( static void fxp_cu_ptr_cmd, (fxp_t *fp, int cmd,
phys_bytes bus_addr, int check_idle) );
_PROTOTYPE( static void fxp_ru_ptr_cmd, (fxp_t *fp, int cmd,
phys_bytes bus_addr, int check_idle) );
_PROTOTYPE( static void fxp_restart_ru, (fxp_t *fp) );
_PROTOTYPE( static void fxp_getstat, (message *mp) );
_PROTOTYPE( static void fxp_getstat_s, (message *mp) );
_PROTOTYPE( static void fxp_getname, (message *mp) );
_PROTOTYPE( static void fxp_handler, (fxp_t *fp) );
_PROTOTYPE( static void fxp_check_ints, (fxp_t *fp) );
_PROTOTYPE( static void fxp_watchdog_f, (timer_t *tp) );
_PROTOTYPE( static int fxp_link_changed, (fxp_t *fp) );
_PROTOTYPE( static void fxp_report_link, (fxp_t *fp) );
_PROTOTYPE( static void reply, (fxp_t *fp, int err, int may_block) );
_PROTOTYPE( static void mess_reply, (message *req, message *reply) );
_PROTOTYPE( static u16_t eeprom_read, (fxp_t *fp, int reg) );
_PROTOTYPE( static void eeprom_addrsize, (fxp_t *fp) );
_PROTOTYPE( static u16_t mii_read, (fxp_t *fp, int reg) );
_PROTOTYPE( static void fxp_set_timer,(timer_t *tp, clock_t delta,
tmr_func_t watchdog) );
_PROTOTYPE( static void fxp_expire_timers,(void) );
_PROTOTYPE( static u8_t do_inb, (port_t port) );
_PROTOTYPE( static u32_t do_inl, (port_t port) );
_PROTOTYPE( static void do_outb, (port_t port, u8_t v) );
_PROTOTYPE( static void do_outl, (port_t port, u32_t v) );
_PROTOTYPE( static void tell_dev, (vir_bytes start, size_t size,
int pci_bus, int pci_dev, int pci_func) );
PRIVATE void handle_hw_intr(void)
{
int i, r;
fxp_t *fp;
for (i= 0, fp= &fxp_table[0]; i<FXP_PORT_NR; i++, fp++) {
if (fp->fxp_mode != FM_ENABLED)
return;
fxp_handler(fp);
r= sys_irqenable(&fp->fxp_hook);
if (r != OK) {
panic("unable enable interrupts: %d", r);
}
if (!fp->fxp_got_int)
return;
fp->fxp_got_int= 0;
assert(fp->fxp_flags & FF_ENABLED);
fxp_check_ints(fp);
}
}
/* SEF functions and variables. */
FORWARD _PROTOTYPE( void sef_local_startup, (void) );
FORWARD _PROTOTYPE( int sef_cb_init_fresh, (int type, sef_init_info_t *info) );
FORWARD _PROTOTYPE( void sef_cb_signal_handler, (int signo) );
EXTERN int env_argc;
EXTERN char **env_argv;
/*===========================================================================*
* main *
*===========================================================================*/
int main(int argc, char *argv[])
{
message m;
int r;
/* SEF local startup. */
env_setargs(argc, argv);
sef_local_startup();
while (TRUE)
{
if ((r= sef_receive(ANY, &m)) != OK)
panic("sef_receive failed: %d", r);
if (is_notify(m.m_type)) {
switch (_ENDPOINT_P(m.m_source)) {
case HARDWARE:
handle_hw_intr();
break;
case CLOCK:
fxp_expire_timers();
break;
default:
panic(" illegal notify from: %d", m.m_source);
}
/* get new message */
continue;
}
switch (m.m_type)
{
case DL_WRITEV: fxp_writev(&m, FALSE, TRUE); break;
case DL_WRITE: fxp_writev(&m, FALSE, FALSE); break;
case DL_WRITEV_S: fxp_writev_s(&m, FALSE); break;
case DL_READ: fxp_readv(&m, FALSE, FALSE); break;
case DL_READV: fxp_readv(&m, FALSE, TRUE); break;
case DL_READV_S: fxp_readv_s(&m, FALSE); break;
case DL_CONF: fxp_init(&m); break;
case DL_GETSTAT: fxp_getstat(&m); break;
case DL_GETSTAT_S: fxp_getstat_s(&m); break;
case DL_GETNAME: fxp_getname(&m); break;
default:
panic(" illegal message: %d", m.m_type);
}
}
}
/*===========================================================================*
* sef_local_startup *
*===========================================================================*/
PRIVATE void sef_local_startup()
{
/* Register init callbacks. */
sef_setcb_init_fresh(sef_cb_init_fresh);
sef_setcb_init_restart(sef_cb_init_fresh);
/* No live update support for now. */
/* Register signal callbacks. */
sef_setcb_signal_handler(sef_cb_signal_handler);
/* Let SEF perform startup. */
sef_startup();
}
/*===========================================================================*
* sef_cb_init_fresh *
*===========================================================================*/
PRIVATE int sef_cb_init_fresh(int type, sef_init_info_t *info)
{
/* Initialize the fxp driver. */
int r;
u32_t tasknr;
long v;
vir_bytes ft;
ft = sizeof(*fxp_table)*FXP_PORT_NR;
system_hz = sys_hz();
if (env_argc < 1)
panic("A head which at this time has no name");
(progname=strrchr(env_argv[0],'/')) ? progname++
: (progname=env_argv[0]);
v= 0;
#if 0
(void) env_parse("ETH_IGN_PROTO", "x", 0, &v, 0x0000L, 0xFFFFL);
#endif
eth_ign_proto= htons((u16_t) v);
if(!(fxp_table = alloc_contig(ft, 0, &fxp_table_phys)))
panic("couldn't allocate table: %d", ENOMEM);
memset(fxp_table, 0, ft);
if((r=tsc_calibrate()) != OK)
panic("tsc_calibrate failed: %d", r);
/* Try to notify inet that we are present (again) */
r= ds_retrieve_label_num("inet", &tasknr);
if (r == OK)
notify(tasknr);
else if (r != ESRCH)
printf("fxp: ds_retrieve_label_num failed for 'inet': %d\n", r);
return(OK);
}
/*===========================================================================*
* sef_cb_signal_handler *
*===========================================================================*/
PRIVATE void sef_cb_signal_handler(int signo)
{
int i;
port_t port;
fxp_t *fp;
/* Only check for termination signal, ignore anything else. */
if (signo != SIGTERM) return;
for (i= 0, fp= &fxp_table[0]; i<FXP_PORT_NR; i++, fp++)
{
if (fp->fxp_mode != FM_ENABLED)
continue;
if (!(fp->fxp_flags & FF_ENABLED))
continue;
port= fp->fxp_base_port;
/* Reset device */
if (debug)
printf("%s: resetting device\n", fp->fxp_name);
fxp_outl(port, CSR_PORT, CP_CMD_SOFT_RESET);
}
exit(0);
}
/*===========================================================================*
* fxp_init *
*===========================================================================*/
static void fxp_init(mp)
message *mp;
{
static int first_time= 1;
int port;
fxp_t *fp;
message reply_mess;
if (first_time)
{
first_time= 0;
fxp_pci_conf(); /* Configure PCI devices. */
tmra_inittimer(&fxp_watchdog);
tmr_arg(&fxp_watchdog)->ta_int= 0;
fxp_set_timer(&fxp_watchdog, system_hz, fxp_watchdog_f);
}
port = mp->DL_PORT;
if (port < 0 || port >= FXP_PORT_NR)
{
reply_mess.m_type= DL_CONF_REPLY;
reply_mess.m3_i1= ENXIO;
mess_reply(mp, &reply_mess);
return;
}
fp= &fxp_table[port];
if (fp->fxp_mode == FM_DISABLED)
{
/* This is the default, try to (re)locate the device. */
fxp_conf_hw(fp);
if (fp->fxp_mode == FM_DISABLED)
{
/* Probe failed, or the device is configured off. */
reply_mess.m_type= DL_CONF_REPLY;
reply_mess.m3_i1= ENXIO;
mess_reply(mp, &reply_mess);
return;
}
if (fp->fxp_mode == FM_ENABLED)
fxp_init_hw(fp);
fxp_report_link(fp);
}
assert(fp->fxp_mode == FM_ENABLED);
assert(fp->fxp_flags & FF_ENABLED);
fp->fxp_flags &= ~(FF_PROMISC | FF_MULTI | FF_BROAD);
if (mp->DL_MODE & DL_PROMISC_REQ)
fp->fxp_flags |= FF_PROMISC;
if (mp->DL_MODE & DL_MULTI_REQ)
fp->fxp_flags |= FF_MULTI;
if (mp->DL_MODE & DL_BROAD_REQ)
fp->fxp_flags |= FF_BROAD;
fp->fxp_client = mp->m_source;
fxp_rec_mode(fp);
reply_mess.m_type = DL_CONF_REPLY;
reply_mess.m3_i1 = mp->DL_PORT;
reply_mess.m3_i2 = FXP_PORT_NR;
*(ether_addr_t *) reply_mess.m3_ca1 = fp->fxp_address;
mess_reply(mp, &reply_mess);
}
/*===========================================================================*
* fxp_pci_conf *
*===========================================================================*/
static void fxp_pci_conf()
{
static char envvar[] = FXP_ENVVAR "#";
static char envfmt[] = "*:d.d.d";
int i, h;
fxp_t *fp;
long v;
for (i= 0, fp= fxp_table; i<FXP_PORT_NR; i++, fp++)
{
strcpy(fp->fxp_name, "fxp#0");
fp->fxp_name[4] += i;
fp->fxp_seen= FALSE;
fp->fxp_features= FFE_NONE;
envvar[sizeof(FXP_ENVVAR)-1]= '0'+i;
#if 0
if (getenv(envvar) != NULL)
{
if (strcmp(getenv(envvar), "off") == 0)
{
fp->fxp_pcibus= 255;
continue;
}
if (!env_prefix(envvar, "pci"))
env_panic(envvar);
}
#endif
v= 0;
#if 0
(void) env_parse(envvar, envfmt, 1, &v, 0, 255);
#endif
fp->fxp_pcibus= v;
v= 0;
#if 0
(void) env_parse(envvar, envfmt, 2, &v, 0, 255);
#endif
fp->fxp_pcidev= v;
v= 0;
#if 0
(void) env_parse(envvar, envfmt, 3, &v, 0, 255);
#endif
fp->fxp_pcifunc= v;
}
pci_init();
for (h= 1; h >= 0; h--) {
for (i= 0, fp= fxp_table; i<FXP_PORT_NR; i++, fp++)
{
if (fp->fxp_pcibus == 255)
continue;
if (((fp->fxp_pcibus | fp->fxp_pcidev |
fp->fxp_pcifunc) != 0) != h)
{
continue;
}
if (fxp_probe(fp))
fp->fxp_seen= TRUE;
}
}
}
/*===========================================================================*
* fxp_probe *
*===========================================================================*/
static int fxp_probe(fxp_t *fp)
{
int i, r, devind, just_one;
u16_t vid, did;
u32_t bar;
u8_t ilr, rev;
char *dname, *str;
if ((fp->fxp_pcibus | fp->fxp_pcidev | fp->fxp_pcifunc) != 0)
{
/* Look for specific PCI device */
r= pci_find_dev(fp->fxp_pcibus, fp->fxp_pcidev,
fp->fxp_pcifunc, &devind);
if (r == 0)
{
printf("%s: no PCI device found at %d.%d.%d\n",
fp->fxp_name, fp->fxp_pcibus,
fp->fxp_pcidev, fp->fxp_pcifunc);
return FALSE;
}
pci_ids(devind, &vid, &did);
just_one= TRUE;
}
else
{
r= pci_first_dev(&devind, &vid, &did);
if (r == 0)
return FALSE;
just_one= FALSE;
}
for(;;)
{
for (i= 0; pcitab_fxp[i].vid != 0; i++)
{
if (pcitab_fxp[i].vid != vid)
continue;
if (pcitab_fxp[i].did != did)
continue;
if (pcitab_fxp[i].checkclass) {
panic("fxp_probe: class check not implemented");
}
break;
}
if (pcitab_fxp[i].vid != 0)
break;
if (just_one)
{
printf(
"%s: wrong PCI device (%04x/%04x) found at %d.%d.%d\n",
fp->fxp_name, vid, did,
fp->fxp_pcibus,
fp->fxp_pcidev, fp->fxp_pcifunc);
return FALSE;
}
r= pci_next_dev(&devind, &vid, &did);
if (!r)
return FALSE;
}
dname= pci_dev_name(vid, did);
#if VERBOSE
if (!dname)
dname= "unknown device";
printf("%s: %s (%04x/%04x) at %s\n",
fp->fxp_name, dname, vid, did, pci_slot_name(devind));
#endif
pci_reserve(devind);
bar= pci_attr_r32(devind, PCI_BAR_2) & 0xffffffe0;
if (bar < 0x400) {
panic("fxp_probe: base address is not properly configured");
}
fp->fxp_base_port= bar;
ilr= pci_attr_r8(devind, PCI_ILR);
fp->fxp_irq= ilr;
if (debug)
{
printf("%s: using I/O address 0x%lx, IRQ %d\n",
fp->fxp_name, (unsigned long)bar, ilr);
}
rev= pci_attr_r8(devind, PCI_REV);
str= NULL;
fp->fxp_type= FT_UNKNOWN;
switch(rev)
{
case FXP_REV_82557A: str= "82557A"; /* 0x01 */
fp->fxp_type= FT_82557;
break;
case FXP_REV_82557B: str= "82557B"; break; /* 0x02 */
case FXP_REV_82557C: str= "82557C"; break; /* 0x03 */
case FXP_REV_82558A: str= "82558A"; /* 0x04 */
fp->fxp_type= FT_82558A;
break;
case FXP_REV_82558B: str= "82558B"; break; /* 0x05 */
case FXP_REV_82559A: str= "82559A"; break; /* 0x06 */
case FXP_REV_82559B: str= "82559B"; break; /* 0x07 */
case FXP_REV_82559C: str= "82559C"; /* 0x08 */
fp->fxp_type= FT_82559;
break;
case FXP_REV_82559ERA: str= "82559ER-A"; /* 0x09 */
fp->fxp_type= FT_82559;
break;
case FXP_REV_82550_1: str= "82550(1)"; /* 0x0C */
fp->fxp_type= FT_82559;
break;
case FXP_REV_82550_2: str= "82550(2)"; /* 0x0D */
fp->fxp_type= FT_82559;
break;
case FXP_REV_82550_3: str= "82550(3)"; /* 0x0E */
fp->fxp_type= FT_82559;
break;
case FXP_REV_82551_1: str= "82551(1)"; /* 0x0F */
fp->fxp_type= FT_82559;
break;
case FXP_REV_82551_2: str= "82551(2)"; /* 0x10 */
fp->fxp_type= FT_82559;
break;
case FXP_REV_82801DB: str= "82801DB"; /* 0x81 */
fp->fxp_type= FT_82801;
break;
}
#if VERBOSE
if (str)
printf("%s: device revision: %s\n", fp->fxp_name, str);
else
printf("%s: unknown revision: 0x%x\n", fp->fxp_name, rev);
#endif
if (fp->fxp_type == FT_UNKNOWN)
{
printf("fxp_probe: device is not supported by this driver\n");
return FALSE;
}
return TRUE;
}
/*===========================================================================*
* fxp_conf_hw *
*===========================================================================*/
static void fxp_conf_hw(fp)
fxp_t *fp;
{
int i;
int mwi, ext_stat1, ext_stat2, lim_fifo, i82503, fc;
fp->fxp_mode= FM_DISABLED; /* Superfluous */
if (!fp->fxp_seen)
return;
/* PCI device is present */
fp->fxp_mode= FM_ENABLED;
fp->fxp_flags= FF_EMPTY;
fp->fxp_got_int= 0;
fp->fxp_send_int= 0;
fp->fxp_ee_addrlen= 0; /* Unknown */
fp->fxp_need_reset= 0;
fp->fxp_report_link= 0;
fp->fxp_link_up= -1; /* Unknown */
fp->fxp_mii_busy= 0;
fp->fxp_read_s= 0;
fp->fxp_rx_need_restart= 0;
fp->fxp_need_conf= 0;
fp->fxp_tx_head= 0;
fp->fxp_tx_tail= 0;
fp->fxp_tx_alive= 0;
fp->fxp_tx_threshold= TXTT_MIN;
/* Try to come up with a sensible configuration for the current
* device. Unfortunately every device is different, defaults are
* not always zero, and some fields are re-used with a completely
* different interpretation. We start out with a sensible default
* for all devices and then add device specific changes.
*/
fp->fxp_conf_bytes[0]= CC_BYTES_NR;
fp->fxp_conf_bytes[1]= CTL_DEFAULT | CRL_DEFAULT;
fp->fxp_conf_bytes[2]= CAI_DEFAULT;
fp->fxp_conf_bytes[3]= 0;
fp->fxp_conf_bytes[4]= 0;
fp->fxp_conf_bytes[5]= 0;
fp->fxp_conf_bytes[6]= CCB6_ESC | CCB6_ETCB | CCB6_RES;
fp->fxp_conf_bytes[7]= CUR_1;
fp->fxp_conf_bytes[8]= CCB8_503_MII;
fp->fxp_conf_bytes[9]= 0;
fp->fxp_conf_bytes[10]= CLB_NORMAL | CPAL_DEFAULT | CCB10_NSAI |
CCB10_RES1;
fp->fxp_conf_bytes[11]= 0;
fp->fxp_conf_bytes[12]= CIS_DEFAULT;
fp->fxp_conf_bytes[13]= CCB13_DEFAULT;
fp->fxp_conf_bytes[14]= CCB14_DEFAULT;
fp->fxp_conf_bytes[15]= CCB15_RES1 | CCB15_RES2;
fp->fxp_conf_bytes[16]= CCB16_DEFAULT;
fp->fxp_conf_bytes[17]= CCB17_DEFAULT;
fp->fxp_conf_bytes[18]= CCB18_RES1 | CCB18_PFCT | CCB18_PE;
fp->fxp_conf_bytes[19]= CCB19_FDPE;
fp->fxp_conf_bytes[20]= CCB20_PFCL | CCB20_RES1;
fp->fxp_conf_bytes[21]= CCB21_RES21;
#if VERBOSE
for (i= 0; i<CC_BYTES_NR; i++)
printf("%d: %0x, ", i, fp->fxp_conf_bytes[i]);
printf("\n");
#endif
mwi= 0; /* Do we want "Memory Write and Invalidate"? */
ext_stat1= 0; /* Do we want extended statistical counters? */
ext_stat2= 0; /* Do we want even more statistical counters? */
lim_fifo= 0; /* Limit number of frame in TX FIFO */
i82503= 0; /* Older 10 Mbps interface on the 82557 */
fc= 0; /* Flow control */
switch(fp->fxp_type)
{
case FT_82557:
if (i82503)
{
fp->fxp_conf_bytes[8] &= ~CCB8_503_MII;
fp->fxp_conf_bytes[15] |= CCB15_CRSCDT;
}
break;
case FT_82558A:
case FT_82559:
case FT_82801:
if (mwi)
fp->fxp_conf_bytes[3] |= CCB3_MWIE;
if (ext_stat1)
fp->fxp_conf_bytes[6] &= ~CCB6_ESC;
if (ext_stat2)
fp->fxp_conf_bytes[6] &= ~CCB6_TCOSC;
if (lim_fifo)
fp->fxp_conf_bytes[7] |= CCB7_2FFIFO;
if (fc)
{
/* From FreeBSD driver */
fp->fxp_conf_bytes[16]= 0x1f;
fp->fxp_conf_bytes[17]= 0x01;
fp->fxp_conf_bytes[19] |= CCB19_FDRSTAFC |
CCB19_FDRSTOFC;
}
fp->fxp_conf_bytes[18] |= CCB18_LROK;
if (fp->fxp_type == FT_82801)
{
fp->fxp_conf_bytes[6] = 0xba; /* ctrl 1 */
fp->fxp_conf_bytes[15] = 0x48; /* promiscuous */
fp->fxp_conf_bytes[21] = 0x05; /* mc_all */
}
break;
default:
panic("fxp_conf_hw: bad device type: %d", fp->fxp_type);
}
#if VERBOSE
for (i= 0; i<CC_BYTES_NR; i++)
printf("%d: %0x, ", i, fp->fxp_conf_bytes[i]);
printf("\n");
#endif
}
/*===========================================================================*
* fxp_init_hw *
*===========================================================================*/
static void fxp_init_hw(fp)
fxp_t *fp;
{
int i, r, isr;
port_t port;
u32_t bus_addr;
port= fp->fxp_base_port;
fxp_init_buf(fp);
fp->fxp_flags = FF_EMPTY;
fp->fxp_flags |= FF_ENABLED;
/* Set the interrupt handler and policy. Do not automatically
* reenable interrupts. Return the IRQ line number on interrupts.
*/
fp->fxp_hook = fp->fxp_irq;
r= sys_irqsetpolicy(fp->fxp_irq, 0, &fp->fxp_hook);
if (r != OK)
panic("sys_irqsetpolicy failed: %d", r);
fxp_reset_hw(fp);
r= sys_irqenable(&fp->fxp_hook);
if (r != OK)
panic("sys_irqenable failed: %d", r);
/* Reset PHY? */
fxp_do_conf(fp);
/* Set pointer to statistical counters */
r= sys_umap(SELF, VM_D, (vir_bytes)&fp->fxp_stat, sizeof(fp->fxp_stat),
&bus_addr);
if (r != OK)
panic("sys_umap failed: %d", r);
fxp_cu_ptr_cmd(fp, SC_CU_LOAD_DCA, bus_addr, TRUE /* check idle */);
/* Ack previous interrupts */
isr= fxp_inb(port, SCB_INT_STAT);
fxp_outb(port, SCB_INT_STAT, isr);
/* Enable interrupts */
fxp_outb(port, SCB_INT_MASK, 0);
fxp_ru_ptr_cmd(fp, SC_RU_START, fp->fxp_rx_busaddr,
TRUE /* check idle */);
fxp_confaddr(fp);
if (debug)
{
printf("%s: Ethernet address ", fp->fxp_name);
for (i= 0; i < 6; i++)
{
printf("%x%c", fp->fxp_address.ea_addr[i],
i < 5 ? ':' : '\n');
}
}
}
/*===========================================================================*
* fxp_init_buf *
*===========================================================================*/
static void fxp_init_buf(fp)
fxp_t *fp;
{
size_t rx_totbufsize, tx_totbufsize, tot_bufsize, alloc_bufsize;
char *alloc_buf;
phys_bytes buf;
int i, r;
struct rfd *rfdp;
struct tx *txp;
phys_bytes ph;
fp->fxp_rx_nbuf= N_RX_BUF;
rx_totbufsize= fp->fxp_rx_nbuf * sizeof(struct rfd);
fp->fxp_rx_bufsize= rx_totbufsize;
fp->fxp_tx_nbuf= N_TX_BUF;
tx_totbufsize= fp->fxp_tx_nbuf * sizeof(struct tx);
fp->fxp_tx_bufsize= tx_totbufsize;
tot_bufsize= sizeof(*tmpbufp) + tx_totbufsize + rx_totbufsize;
if (tot_bufsize % 4096)
tot_bufsize += 4096 - (tot_bufsize % 4096);
alloc_bufsize= tot_bufsize;
alloc_buf= alloc_contig(alloc_bufsize, AC_ALIGN4K, &ph);
if (alloc_buf == NULL) {
panic("fxp_init_buf: unable to alloc_contig size: %d", alloc_bufsize);
}
buf= (phys_bytes)alloc_buf;
tell_dev((vir_bytes)buf, tot_bufsize, 0, 0, 0);
tmpbufp= (union tmpbuf *)buf;
fp->fxp_rx_buf= (struct rfd *)&tmpbufp[1];
r= sys_umap(SELF, VM_D, (vir_bytes)fp->fxp_rx_buf, rx_totbufsize,
&fp->fxp_rx_busaddr);
if (r != OK)
panic("sys_umap failed: %d", r);
#if 0
printf("fxp_init_buf: got phys 0x%x for vir 0x%x\n",
fp->fxp_rx_busaddr, fp->fxp_rx_buf);
#endif
for (i= 0, rfdp= fp->fxp_rx_buf; i<fp->fxp_rx_nbuf; i++, rfdp++)
{
rfdp->rfd_status= 0;
rfdp->rfd_command= 0;
if (i != fp->fxp_rx_nbuf-1)
{
r= sys_umap(SELF, VM_D, (vir_bytes)&rfdp[1],
sizeof(rfdp[1]), &rfdp->rfd_linkaddr);
if (r != OK)
panic("sys_umap failed: %d", r);
}
else
{
rfdp->rfd_linkaddr= fp->fxp_rx_busaddr;
rfdp->rfd_command |= RFDC_EL;
}
rfdp->rfd_reserved= 0;
rfdp->rfd_res= 0;
rfdp->rfd_size= sizeof(rfdp->rfd_buf);
}
fp->fxp_rx_head= 0;
fp->fxp_tx_buf= (struct tx *)((char *)fp->fxp_rx_buf+rx_totbufsize);
r= sys_umap(SELF, VM_D, (vir_bytes)fp->fxp_tx_buf,
(phys_bytes)tx_totbufsize, &fp->fxp_tx_busaddr);
if (r != OK)
panic("sys_umap failed: %d", r);
for (i= 0, txp= fp->fxp_tx_buf; i<fp->fxp_tx_nbuf; i++, txp++)
{
txp->tx_status= 0;
txp->tx_command= TXC_EL | CBL_NOP; /* Just in case */
if (i != fp->fxp_tx_nbuf-1)
{
r= sys_umap(SELF, VM_D, (vir_bytes)&txp[1],
(phys_bytes)sizeof(txp[1]),
&txp->tx_linkaddr);
if (r != OK)
panic("sys_umap failed: %d", r);
}
else
{
txp->tx_linkaddr= fp->fxp_tx_busaddr;
}
txp->tx_tbda= TX_TBDA_NIL;
txp->tx_size= 0;
txp->tx_tthresh= fp->fxp_tx_threshold;
txp->tx_ntbd= 0;
}
fp->fxp_tx_idle= 1;
}
/*===========================================================================*
* fxp_reset_hw *
*===========================================================================*/
static void fxp_reset_hw(fp)
fxp_t *fp;
{
/* Inline the function in init? */
port_t port;
port= fp->fxp_base_port;
/* Reset device */
fxp_outl(port, CSR_PORT, CP_CMD_SOFT_RESET);
tickdelay(micros_to_ticks(CSR_PORT_RESET_DELAY));
/* Disable interrupts */
fxp_outb(port, SCB_INT_MASK, SIM_M);
/* Set CU base to zero */
fxp_cu_ptr_cmd(fp, SC_CU_LOAD_BASE, 0, TRUE /* check idle */);
/* Set RU base to zero */
fxp_ru_ptr_cmd(fp, SC_RU_LOAD_BASE, 0, TRUE /* check idle */);
}
/*===========================================================================*
* fxp_confaddr *
*===========================================================================*/
static void fxp_confaddr(fxp_t *fp)
{
static char eakey[]= FXP_ENVVAR "#_EA";
static char eafmt[]= "x:x:x:x:x:x";
clock_t t0,t1;
int i, r;
u32_t bus_addr;
long v;
/* User defined ethernet address? */
eakey[sizeof(FXP_ENVVAR)-1]= '0' + (fp-fxp_table);
for (i= 0; i < 6; i++)
{
if (env_parse(eakey, eafmt, i, &v, 0x00L, 0xFFL) != EP_SET)
break;
fp->fxp_address.ea_addr[i]= v;
}
if (i != 0 && i != 6) env_panic(eakey); /* It's all or nothing */
if (i == 0)
{
/* Get ethernet address from EEPROM */
for (i= 0; i<3; i++)
{
v= eeprom_read(fp, i);
fp->fxp_address.ea_addr[i*2]= (v & 0xff);
fp->fxp_address.ea_addr[i*2+1]= ((v >> 8) & 0xff);
}
}
/* Tell NIC about ethernet address */
tmpbufp->ias.ias_status= 0;
tmpbufp->ias.ias_command= CBL_C_EL | CBL_AIS;
tmpbufp->ias.ias_linkaddr= 0;
memcpy(tmpbufp->ias.ias_ethaddr, fp->fxp_address.ea_addr,
sizeof(tmpbufp->ias.ias_ethaddr));
r= sys_umap(SELF, VM_D, (vir_bytes)&tmpbufp->ias,
(phys_bytes)sizeof(tmpbufp->ias), &bus_addr);
if (r != OK)
panic("sys_umap failed: %d", r);
fxp_cu_ptr_cmd(fp, SC_CU_START, bus_addr, TRUE /* check idle */);
getuptime(&t0);
do {
/* Wait for CU command to complete */
if (tmpbufp->ias.ias_status & CBL_F_C)
break;
} while (getuptime(&t1)==OK && (t1-t0) < micros_to_ticks(1000));
if (!(tmpbufp->ias.ias_status & CBL_F_C))
panic("fxp_confaddr: CU command failed to complete");
if (!(tmpbufp->ias.ias_status & CBL_F_OK))
panic("fxp_confaddr: CU command failed");
#if VERBOSE
printf("%s: hardware ethernet address: ", fp->fxp_name);
for (i= 0; i<6; i++)
{
printf("%02x%s", fp->fxp_address.ea_addr[i],
i < 5 ? ":" : "");
}
printf("\n");
#endif
}
/*===========================================================================*
* fxp_rec_mode *
*===========================================================================*/
static void fxp_rec_mode(fp)
fxp_t *fp;
{
fp->fxp_conf_bytes[0]= CC_BYTES_NR; /* Just to be sure */
fp->fxp_conf_bytes[15] &= ~(CCB15_BD|CCB15_PM);
fp->fxp_conf_bytes[21] &= ~CCB21_MA;
if (fp->fxp_flags & FF_PROMISC)
fp->fxp_conf_bytes[15] |= CCB15_PM;
if (fp->fxp_flags & FF_MULTI)
fp->fxp_conf_bytes[21] |= CCB21_MA;
if (!(fp->fxp_flags & (FF_BROAD|FF_MULTI|FF_PROMISC)))
fp->fxp_conf_bytes[15] |= CCB15_BD;
/* Queue request if not idle */
if (fp->fxp_tx_idle)
{
fxp_do_conf(fp);
}
else
{
printf("fxp_rec_mode: setting fxp_need_conf\n");
fp->fxp_need_conf= TRUE;
}
}
/*===========================================================================*
* fxp_writev *
*===========================================================================*/
static void fxp_writev(mp, from_int, vectored)
message *mp;
int from_int;
int vectored;
{
vir_bytes iov_src;
int i, j, n, o, r, s, dl_port, count, size, prev_head;
int fxp_client, fxp_tx_nbuf, fxp_tx_head;
u16_t tx_command;
fxp_t *fp;
iovec_t *iovp;
struct tx *txp, *prev_txp;
dl_port = mp->DL_PORT;
count = mp->DL_COUNT;
if (dl_port < 0 || dl_port >= FXP_PORT_NR)
panic("fxp_writev: illegal port: %d", dl_port);
fp= &fxp_table[dl_port];
fxp_client= mp->DL_PROC;
fp->fxp_client= fxp_client;
assert(fp->fxp_mode == FM_ENABLED);
assert(fp->fxp_flags & FF_ENABLED);
if (from_int)
{
assert(fp->fxp_flags & FF_SEND_AVAIL);
fp->fxp_flags &= ~FF_SEND_AVAIL;
fp->fxp_tx_alive= TRUE;
}
if (fp->fxp_tx_idle)
{
txp= fp->fxp_tx_buf;
fxp_tx_head= 0; /* lint */
prev_txp= NULL; /* lint */
}
else
{
fxp_tx_nbuf= fp->fxp_tx_nbuf;
prev_head= fp->fxp_tx_head;
fxp_tx_head= prev_head+1;
if (fxp_tx_head == fxp_tx_nbuf)
fxp_tx_head= 0;
assert(fxp_tx_head < fxp_tx_nbuf);
if (fxp_tx_head == fp->fxp_tx_tail)
{
/* Send queue is full */
assert(!(fp->fxp_flags & FF_SEND_AVAIL));
fp->fxp_flags |= FF_SEND_AVAIL;
goto suspend;
}
prev_txp= &fp->fxp_tx_buf[prev_head];
txp= &fp->fxp_tx_buf[fxp_tx_head];
}
assert(!(fp->fxp_flags & FF_SEND_AVAIL));
assert(!(fp->fxp_flags & FF_PACK_SENT));
if (vectored)
{
iov_src = (vir_bytes)mp->DL_ADDR;
size= 0;
o= 0;
for (i= 0; i<count; i += IOVEC_NR,
iov_src += IOVEC_NR * sizeof(fp->fxp_iovec[0]))
{
n= IOVEC_NR;
if (i+n > count)
n= count-i;
r= sys_vircopy(fxp_client, D, iov_src,
SELF, D, (vir_bytes)fp->fxp_iovec,
n * sizeof(fp->fxp_iovec[0]));
if (r != OK)
panic("fxp_writev: sys_vircopy failed: %d", r);
for (j= 0, iovp= fp->fxp_iovec; j<n; j++, iovp++)
{
s= iovp->iov_size;
if (size + s > ETH_MAX_PACK_SIZE_TAGGED) {
panic("fxp_writev: invalid packet size");
}
r= sys_vircopy(fxp_client, D, iovp->iov_addr,
SELF, D, (vir_bytes)(txp->tx_buf+o),
s);
if (r != OK) {
panic("fxp_writev: sys_vircopy failed: %d", r);
}
size += s;
o += s;
}
}
if (size < ETH_MIN_PACK_SIZE)
panic("fxp_writev: invalid packet size: %d", size);
}
else
{
size= mp->DL_COUNT;
if (size < ETH_MIN_PACK_SIZE || size > ETH_MAX_PACK_SIZE_TAGGED)
panic("fxp_writev: invalid packet size: %d", size);
r= sys_vircopy(fxp_client, D, (vir_bytes)mp->DL_ADDR,
SELF, D, (vir_bytes)txp->tx_buf, size);
if (r != OK)
panic("fxp_writev: sys_vircopy failed: %d", r);
}
txp->tx_status= 0;
txp->tx_command= TXC_EL | CBL_XMIT;
txp->tx_tbda= TX_TBDA_NIL;
txp->tx_size= TXSZ_EOF | size;
txp->tx_tthresh= fp->fxp_tx_threshold;
txp->tx_ntbd= 0;
if (fp->fxp_tx_idle)
{
fp->fxp_tx_idle= 0;
fp->fxp_tx_head= fp->fxp_tx_tail= 0;
fxp_cu_ptr_cmd(fp, SC_CU_START, fp->fxp_tx_busaddr,
TRUE /* check idle */);
}
else
{
/* Link new request in transmit list */
tx_command= prev_txp->tx_command;
assert(tx_command == (TXC_EL | CBL_XMIT));
prev_txp->tx_command= CBL_XMIT;
fp->fxp_tx_head= fxp_tx_head;
}
fp->fxp_flags |= FF_PACK_SENT;
/* If the interrupt handler called, don't send a reply. The reply
* will be sent after all interrupts are handled.
*/
if (from_int)
return;
reply(fp, OK, FALSE);
return;
suspend:
if (from_int)
panic("fxp: should not be sending");
fp->fxp_tx_mess= *mp;
reply(fp, OK, FALSE);
}
/*===========================================================================*
* fxp_writev_s *
*===========================================================================*/
static void fxp_writev_s(message *mp, int from_int)
{
cp_grant_id_t iov_grant;
vir_bytes iov_offset;
int i, j, n, o, r, s, dl_port, count, size, prev_head;
int fxp_client, fxp_tx_nbuf, fxp_tx_head;
u16_t tx_command;
fxp_t *fp;
iovec_s_t *iovp;
struct tx *txp, *prev_txp;
dl_port = mp->DL_PORT;
count = mp->DL_COUNT;
if (dl_port < 0 || dl_port >= FXP_PORT_NR)
panic("fxp_writev: illegal port: %d", dl_port);
fp= &fxp_table[dl_port];
fxp_client= mp->DL_PROC;
fp->fxp_client= fxp_client;
assert(fp->fxp_mode == FM_ENABLED);
assert(fp->fxp_flags & FF_ENABLED);
if (from_int)
{
assert(fp->fxp_flags & FF_SEND_AVAIL);
fp->fxp_flags &= ~FF_SEND_AVAIL;
fp->fxp_tx_alive= TRUE;
}
if (fp->fxp_tx_idle)
{
txp= fp->fxp_tx_buf;
fxp_tx_head= 0; /* lint */
prev_txp= NULL; /* lint */
}
else
{
fxp_tx_nbuf= fp->fxp_tx_nbuf;
prev_head= fp->fxp_tx_head;
fxp_tx_head= prev_head+1;
if (fxp_tx_head == fxp_tx_nbuf)
fxp_tx_head= 0;
assert(fxp_tx_head < fxp_tx_nbuf);
if (fxp_tx_head == fp->fxp_tx_tail)
{
/* Send queue is full */
assert(!(fp->fxp_flags & FF_SEND_AVAIL));
fp->fxp_flags |= FF_SEND_AVAIL;
goto suspend;
}
prev_txp= &fp->fxp_tx_buf[prev_head];
txp= &fp->fxp_tx_buf[fxp_tx_head];
}
assert(!(fp->fxp_flags & FF_SEND_AVAIL));
assert(!(fp->fxp_flags & FF_PACK_SENT));
iov_grant= mp->DL_GRANT;
size= 0;
o= 0;
iov_offset= 0;
for (i= 0; i<count; i += IOVEC_NR,
iov_offset += IOVEC_NR * sizeof(fp->fxp_iovec_s[0]))
{
n= IOVEC_NR;
if (i+n > count)
n= count-i;
r= sys_safecopyfrom(fxp_client, iov_grant, iov_offset,
(vir_bytes)fp->fxp_iovec_s,
n * sizeof(fp->fxp_iovec_s[0]), D);
if (r != OK)
panic("fxp_writev: sys_safecopyfrom failed: %d", r);
for (j= 0, iovp= fp->fxp_iovec_s; j<n; j++, iovp++)
{
s= iovp->iov_size;
if (size + s > ETH_MAX_PACK_SIZE_TAGGED) {
panic("fxp_writev: invalid packet size: %d", size + s);
}
r= sys_safecopyfrom(fxp_client, iovp->iov_grant,
0, (vir_bytes)(txp->tx_buf+o), s, D);
if (r != OK) {
panic("fxp_writev_s: sys_safecopyfrom failed: %d", r);
}
size += s;
o += s;
}
}
if (size < ETH_MIN_PACK_SIZE)
panic("fxp_writev: invalid packet size: %d", size);
txp->tx_status= 0;
txp->tx_command= TXC_EL | CBL_XMIT;
txp->tx_tbda= TX_TBDA_NIL;
txp->tx_size= TXSZ_EOF | size;
txp->tx_tthresh= fp->fxp_tx_threshold;
txp->tx_ntbd= 0;
if (fp->fxp_tx_idle)
{
fp->fxp_tx_idle= 0;
fp->fxp_tx_head= fp->fxp_tx_tail= 0;
fxp_cu_ptr_cmd(fp, SC_CU_START, fp->fxp_tx_busaddr,
TRUE /* check idle */);
}
else
{
/* Link new request in transmit list */
tx_command= prev_txp->tx_command;
assert(tx_command == (TXC_EL | CBL_XMIT));
prev_txp->tx_command= CBL_XMIT;
fp->fxp_tx_head= fxp_tx_head;
}
fp->fxp_flags |= FF_PACK_SENT;
/* If the interrupt handler called, don't send a reply. The reply
* will be sent after all interrupts are handled.
*/
if (from_int)
return;
reply(fp, OK, FALSE);
return;
suspend:
if (from_int)
panic("fxp: should not be sending");
fp->fxp_tx_mess= *mp;
reply(fp, OK, FALSE);
}
/*===========================================================================*
* fxp_readv *
*===========================================================================*/
static void fxp_readv(mp, from_int, vectored)
message *mp;
int from_int;
int vectored;
{
int i, j, n, o, r, s, dl_port, fxp_client, count, size,
fxp_rx_head, fxp_rx_nbuf;
port_t port;
unsigned packlen;
vir_bytes iov_src;
u16_t rfd_status;
u16_t rfd_res;
u8_t scb_status;
fxp_t *fp;
iovec_t *iovp;
struct rfd *rfdp, *prev_rfdp;
dl_port = mp->DL_PORT;
count = mp->DL_COUNT;
if (dl_port < 0 || dl_port >= FXP_PORT_NR)
panic("fxp_readv: illegal port: %d", dl_port);
fp= &fxp_table[dl_port];
fxp_client= mp->DL_PROC;
fp->fxp_client= fxp_client;
assert(fp->fxp_mode == FM_ENABLED);
assert(fp->fxp_flags & FF_ENABLED);
port= fp->fxp_base_port;
fxp_rx_head= fp->fxp_rx_head;
rfdp= &fp->fxp_rx_buf[fxp_rx_head];
rfd_status= rfdp->rfd_status;
if (!(rfd_status & RFDS_C))
{
/* Receive buffer is empty, suspend */
goto suspend;
}
if (!(rfd_status & RFDS_OK))
{
/* Not OK? What happened? */
assert(0);
}
else
{
assert(!(rfd_status & (RFDS_CRCERR | RFDS_ALIGNERR |
RFDS_OUTOFBUF | RFDS_DMAOVR | RFDS_TOOSHORT |
RFDS_RXERR)));
}
rfd_res= rfdp->rfd_res;
assert(rfd_res & RFDR_EOF);
assert(rfd_res & RFDR_F);
packlen= rfd_res & RFDSZ_SIZE;
if (vectored)
{
iov_src = (vir_bytes)mp->DL_ADDR;
size= 0;
o= 0;
for (i= 0; i<count; i += IOVEC_NR,
iov_src += IOVEC_NR * sizeof(fp->fxp_iovec[0]))
{
n= IOVEC_NR;
if (i+n > count)
n= count-i;
r= sys_vircopy(fxp_client, D, iov_src,
SELF, D, (vir_bytes)fp->fxp_iovec,
n * sizeof(fp->fxp_iovec[0]));
if (r != OK)
panic("fxp_readv: sys_vircopy failed: %d", r);
for (j= 0, iovp= fp->fxp_iovec; j<n; j++, iovp++)
{
s= iovp->iov_size;
if (size + s > packlen)
{
assert(packlen > size);
s= packlen-size;
}
r= sys_vircopy(SELF, D,
(vir_bytes)(rfdp->rfd_buf+o),
fxp_client, D, iovp->iov_addr, s);
if (r != OK) {
panic("fxp_readv: sys_vircopy failed: %d", r);
}
size += s;
if (size == packlen)
break;
o += s;
}
if (size == packlen)
break;
}
if (size < packlen)
{
assert(0);
}
}
else
{
assert(0);
}
fp->fxp_read_s= packlen;
fp->fxp_flags= (fp->fxp_flags & ~FF_READING) | FF_PACK_RECV;
/* Re-init the current buffer */
rfdp->rfd_status= 0;
rfdp->rfd_command= RFDC_EL;
rfdp->rfd_reserved= 0;
rfdp->rfd_res= 0;
rfdp->rfd_size= sizeof(rfdp->rfd_buf);
fxp_rx_nbuf= fp->fxp_rx_nbuf;
if (fxp_rx_head == 0)
{
prev_rfdp= &fp->fxp_rx_buf[fxp_rx_nbuf-1];
}
else
prev_rfdp= &rfdp[-1];
assert(prev_rfdp->rfd_command & RFDC_EL);
prev_rfdp->rfd_command &= ~RFDC_EL;
fxp_rx_head++;
if (fxp_rx_head == fxp_rx_nbuf)
fxp_rx_head= 0;
assert(fxp_rx_head < fxp_rx_nbuf);
fp->fxp_rx_head= fxp_rx_head;
if (!from_int)
reply(fp, OK, FALSE);
return;
suspend:
if (fp->fxp_rx_need_restart)
{
fp->fxp_rx_need_restart= 0;
/* Check the status of the RU */
scb_status= fxp_inb(port, SCB_STATUS);
if ((scb_status & SS_RUS_MASK) != SS_RU_NORES)
{
/* Race condition? */
printf("fxp_readv: restart race: 0x%x\n",
scb_status);
assert((scb_status & SS_RUS_MASK) == SS_RU_READY);
}
else
{
fxp_restart_ru(fp);
}
}
if (from_int)
{
assert(fp->fxp_flags & FF_READING);
/* No need to store any state */
return;
}
fp->fxp_rx_mess= *mp;
assert(!(fp->fxp_flags & FF_READING));
fp->fxp_flags |= FF_READING;
reply(fp, OK, FALSE);
}
/*===========================================================================*
* fxp_readv_s *
*===========================================================================*/
static void fxp_readv_s(mp, from_int)
message *mp;
int from_int;
{
int i, j, n, o, r, s, dl_port, fxp_client, count, size,
fxp_rx_head, fxp_rx_nbuf;
cp_grant_id_t iov_grant;
port_t port;
unsigned packlen;
vir_bytes iov_offset;
u16_t rfd_status;
u16_t rfd_res;
u8_t scb_status;
fxp_t *fp;
iovec_s_t *iovp;
struct rfd *rfdp, *prev_rfdp;
dl_port = mp->DL_PORT;
count = mp->DL_COUNT;
if (dl_port < 0 || dl_port >= FXP_PORT_NR)
panic("fxp_readv: illegal port: %d", dl_port);
fp= &fxp_table[dl_port];
fxp_client= mp->DL_PROC;
fp->fxp_client= fxp_client;
assert(fp->fxp_mode == FM_ENABLED);
assert(fp->fxp_flags & FF_ENABLED);
port= fp->fxp_base_port;
fxp_rx_head= fp->fxp_rx_head;
rfdp= &fp->fxp_rx_buf[fxp_rx_head];
rfd_status= rfdp->rfd_status;
if (!(rfd_status & RFDS_C))
{
/* Receive buffer is empty, suspend */
goto suspend;
}
if (!(rfd_status & RFDS_OK))
{
/* Not OK? What happened? */
assert(0);
}
else
{
assert(!(rfd_status & (RFDS_CRCERR | RFDS_ALIGNERR |
RFDS_OUTOFBUF | RFDS_DMAOVR | RFDS_TOOSHORT |
RFDS_RXERR)));
}
rfd_res= rfdp->rfd_res;
assert(rfd_res & RFDR_EOF);
assert(rfd_res & RFDR_F);
packlen= rfd_res & RFDSZ_SIZE;
iov_grant = mp->DL_GRANT;
size= 0;
o= 0;
iov_offset= 0;
for (i= 0; i<count; i += IOVEC_NR,
iov_offset += IOVEC_NR * sizeof(fp->fxp_iovec_s[0]))
{
n= IOVEC_NR;
if (i+n > count)
n= count-i;
r= sys_safecopyfrom(fxp_client, iov_grant, iov_offset,
(vir_bytes)fp->fxp_iovec_s,
n * sizeof(fp->fxp_iovec_s[0]), D);
if (r != OK)
panic("fxp_readv_s: sys_safecopyfrom failed: %d", r);
for (j= 0, iovp= fp->fxp_iovec_s; j<n; j++, iovp++)
{
s= iovp->iov_size;
if (size + s > packlen)
{
assert(packlen > size);
s= packlen-size;
}
r= sys_safecopyto(fxp_client, iovp->iov_grant,
0, (vir_bytes)(rfdp->rfd_buf+o), s, D);
if (r != OK)
{
panic("fxp_readv: sys_safecopyto failed: %d", r);
}
size += s;
if (size == packlen)
break;
o += s;
}
if (size == packlen)
break;
}
if (size < packlen)
{
assert(0);
}
fp->fxp_read_s= packlen;
fp->fxp_flags= (fp->fxp_flags & ~FF_READING) | FF_PACK_RECV;
/* Re-init the current buffer */
rfdp->rfd_status= 0;
rfdp->rfd_command= RFDC_EL;
rfdp->rfd_reserved= 0;
rfdp->rfd_res= 0;
rfdp->rfd_size= sizeof(rfdp->rfd_buf);
fxp_rx_nbuf= fp->fxp_rx_nbuf;
if (fxp_rx_head == 0)
{
prev_rfdp= &fp->fxp_rx_buf[fxp_rx_nbuf-1];
}
else
prev_rfdp= &rfdp[-1];
assert(prev_rfdp->rfd_command & RFDC_EL);
prev_rfdp->rfd_command &= ~RFDC_EL;
fxp_rx_head++;
if (fxp_rx_head == fxp_rx_nbuf)
fxp_rx_head= 0;
assert(fxp_rx_head < fxp_rx_nbuf);
fp->fxp_rx_head= fxp_rx_head;
if (!from_int)
reply(fp, OK, FALSE);
return;
suspend:
if (fp->fxp_rx_need_restart)
{
fp->fxp_rx_need_restart= 0;
/* Check the status of the RU */
scb_status= fxp_inb(port, SCB_STATUS);
if ((scb_status & SS_RUS_MASK) != SS_RU_NORES)
{
/* Race condition? */
printf("fxp_readv: restart race: 0x%x\n",
scb_status);
assert((scb_status & SS_RUS_MASK) == SS_RU_READY);
}
else
{
fxp_restart_ru(fp);
}
}
if (from_int)
{
assert(fp->fxp_flags & FF_READING);
/* No need to store any state */
return;
}
fp->fxp_rx_mess= *mp;
assert(!(fp->fxp_flags & FF_READING));
fp->fxp_flags |= FF_READING;
reply(fp, OK, FALSE);
}
/*===========================================================================*
* fxp_do_conf *
*===========================================================================*/
static void fxp_do_conf(fp)
fxp_t *fp;
{
int r;
u32_t bus_addr;
clock_t t0,t1;
/* Configure device */
tmpbufp->cc.cc_status= 0;
tmpbufp->cc.cc_command= CBL_C_EL | CBL_CONF;
tmpbufp->cc.cc_linkaddr= 0;
memcpy(tmpbufp->cc.cc_bytes, fp->fxp_conf_bytes,
sizeof(tmpbufp->cc.cc_bytes));
r= sys_umap(SELF, VM_D, (vir_bytes)&tmpbufp->cc,
(phys_bytes)sizeof(tmpbufp->cc), &bus_addr);
if (r != OK)
panic("sys_umap failed: %d", r);
fxp_cu_ptr_cmd(fp, SC_CU_START, bus_addr, TRUE /* check idle */);
getuptime(&t0);
do {
/* Wait for CU command to complete */
if (tmpbufp->cc.cc_status & CBL_F_C)
break;
} while (getuptime(&t1)==OK && (t1-t0) < micros_to_ticks(100000));
if (!(tmpbufp->cc.cc_status & CBL_F_C))
panic("fxp_do_conf: CU command failed to complete");
if (!(tmpbufp->cc.cc_status & CBL_F_OK))
panic("fxp_do_conf: CU command failed");
}
/*===========================================================================*
* fxp_cu_ptr_cmd *
*===========================================================================*/
static void fxp_cu_ptr_cmd(fp, cmd, bus_addr, check_idle)
fxp_t *fp;
int cmd;
phys_bytes bus_addr;
int check_idle;
{
clock_t t0,t1;
port_t port;
u8_t scb_cmd;
port= fp->fxp_base_port;
if (check_idle)
{
/* Consistency check. Make sure that CU is idle */
if ((fxp_inb(port, SCB_STATUS) & SS_CUS_MASK) != SS_CU_IDLE)
panic("fxp_cu_ptr_cmd: CU is not idle");
}
fxp_outl(port, SCB_POINTER, bus_addr);
fxp_outb(port, SCB_CMD, cmd);
/* What is a reasonable time-out? There is nothing in the
* documentation. 1 ms should be enough.
*/
getuptime(&t0);
do {
/* Wait for CU command to be accepted */
scb_cmd= fxp_inb(port, SCB_CMD);
if ((scb_cmd & SC_CUC_MASK) == SC_CU_NOP)
break;
} while (getuptime(&t1)==OK && (t1-t0) < micros_to_ticks(100000));
if ((scb_cmd & SC_CUC_MASK) != SC_CU_NOP)
panic("fxp_cu_ptr_cmd: CU does not accept command");
}
/*===========================================================================*
* fxp_ru_ptr_cmd *
*===========================================================================*/
static void fxp_ru_ptr_cmd(fp, cmd, bus_addr, check_idle)
fxp_t *fp;
int cmd;
phys_bytes bus_addr;
int check_idle;
{
clock_t t0,t1;
port_t port;
u8_t scb_cmd;
port= fp->fxp_base_port;
if (check_idle)
{
/* Consistency check, make sure that RU is idle */
if ((fxp_inb(port, SCB_STATUS) & SS_RUS_MASK) != SS_RU_IDLE)
panic("fxp_ru_ptr_cmd: RU is not idle");
}
fxp_outl(port, SCB_POINTER, bus_addr);
fxp_outb(port, SCB_CMD, cmd);
getuptime(&t0);
do {
/* Wait for RU command to be accepted */
scb_cmd= fxp_inb(port, SCB_CMD);
if ((scb_cmd & SC_RUC_MASK) == SC_RU_NOP)
break;
} while (getuptime(&t1)==OK && (t1-t0) < micros_to_ticks(1000));
if ((scb_cmd & SC_RUC_MASK) != SC_RU_NOP)
panic("fxp_ru_ptr_cmd: RU does not accept command");
}
/*===========================================================================*
* fxp_restart_ru *
*===========================================================================*/
static void fxp_restart_ru(fp)
fxp_t *fp;
{
int i, fxp_rx_nbuf;
port_t port;
struct rfd *rfdp;
port= fp->fxp_base_port;
fxp_rx_nbuf= fp->fxp_rx_nbuf;
for (i= 0, rfdp= fp->fxp_rx_buf; i<fxp_rx_nbuf; i++, rfdp++)
{
rfdp->rfd_status= 0;
rfdp->rfd_command= 0;
if (i == fp->fxp_rx_nbuf-1)
rfdp->rfd_command= RFDC_EL;
rfdp->rfd_reserved= 0;
rfdp->rfd_res= 0;
rfdp->rfd_size= sizeof(rfdp->rfd_buf);
}
fp->fxp_rx_head= 0;
/* Make sure that RU is in the 'No resources' state */
if ((fxp_inb(port, SCB_STATUS) & SS_RUS_MASK) != SS_RU_NORES)
panic("fxp_restart_ru: RU is in an unexpected state");
fxp_ru_ptr_cmd(fp, SC_RU_START, fp->fxp_rx_busaddr,
FALSE /* do not check idle */);
}
/*===========================================================================*
* fxp_getstat *
*===========================================================================*/
static void fxp_getstat(mp)
message *mp;
{
clock_t t0,t1;
int r, dl_port;
fxp_t *fp;
u32_t *p;
eth_stat_t stats;
dl_port = mp->DL_PORT;
if (dl_port < 0 || dl_port >= FXP_PORT_NR)
panic("fxp_getstat: illegal port: %d", dl_port);
fp= &fxp_table[dl_port];
fp->fxp_client= mp->DL_PROC;
assert(fp->fxp_mode == FM_ENABLED);
assert(fp->fxp_flags & FF_ENABLED);
p= &fp->fxp_stat.sc_tx_fcp;
*p= 0;
/* The dump commmand doesn't take a pointer. Setting a pointer
* doesn't hard though.
*/
fxp_cu_ptr_cmd(fp, SC_CU_DUMP_SC, 0, FALSE /* do not check idle */);
getuptime(&t0);
do {
/* Wait for CU command to complete */
if (*p != 0)
break;
} while (getuptime(&t1)==OK && (t1-t0) < micros_to_ticks(1000));
if (*p == 0)
panic("fxp_getstat: CU command failed to complete");
if (*p != SCM_DSC)
panic("fxp_getstat: bad magic");
stats.ets_recvErr=
fp->fxp_stat.sc_rx_crc +
fp->fxp_stat.sc_rx_align +
fp->fxp_stat.sc_rx_resource +
fp->fxp_stat.sc_rx_overrun +
fp->fxp_stat.sc_rx_cd +
fp->fxp_stat.sc_rx_short;
stats.ets_sendErr=
fp->fxp_stat.sc_tx_maxcol +
fp->fxp_stat.sc_tx_latecol +
fp->fxp_stat.sc_tx_crs;
stats.ets_OVW= fp->fxp_stat.sc_rx_overrun;
stats.ets_CRCerr= fp->fxp_stat.sc_rx_crc;
stats.ets_frameAll= fp->fxp_stat.sc_rx_align;
stats.ets_missedP= fp->fxp_stat.sc_rx_resource;
stats.ets_packetR= fp->fxp_stat.sc_rx_good;
stats.ets_packetT= fp->fxp_stat.sc_tx_good;
stats.ets_transDef= fp->fxp_stat.sc_tx_defered;
stats.ets_collision= fp->fxp_stat.sc_tx_totcol;
stats.ets_transAb= fp->fxp_stat.sc_tx_maxcol;
stats.ets_carrSense= fp->fxp_stat.sc_tx_crs;
stats.ets_fifoUnder= fp->fxp_stat.sc_tx_underrun;
stats.ets_fifoOver= fp->fxp_stat.sc_rx_overrun;
stats.ets_CDheartbeat= 0;
stats.ets_OWC= fp->fxp_stat.sc_tx_latecol;
r= sys_vircopy(SELF, D, (vir_bytes)&stats,
mp->DL_PROC, D, (vir_bytes) mp->DL_ADDR, sizeof(stats));
if (r != OK)
panic("fxp_getstat: sys_vircopy failed: %d", r);
mp->m_type= DL_STAT_REPLY;
mp->DL_PORT= dl_port;
mp->DL_STAT= OK;
r= send(mp->m_source, mp);
if (r != OK)
panic("fxp_getstat: send failed: %d", r);
}
/*===========================================================================*
* fxp_getstat_s *
*===========================================================================*/
static void fxp_getstat_s(message *mp)
{
clock_t t0,t1;
int r, dl_port;
fxp_t *fp;
u32_t *p;
eth_stat_t stats;
dl_port = mp->DL_PORT;
if (dl_port < 0 || dl_port >= FXP_PORT_NR)
panic("fxp_getstat: illegal port: %d", dl_port);
fp= &fxp_table[dl_port];
fp->fxp_client= mp->DL_PROC;
assert(fp->fxp_mode == FM_ENABLED);
assert(fp->fxp_flags & FF_ENABLED);
p= &fp->fxp_stat.sc_tx_fcp;
*p= 0;
/* The dump commmand doesn't take a pointer. Setting a pointer
* doesn't hurt though.
*/
fxp_cu_ptr_cmd(fp, SC_CU_DUMP_SC, 0, FALSE /* do not check idle */);
getuptime(&t0);
do {
/* Wait for CU command to complete */
if (*p != 0)
break;
} while (getuptime(&t1)==OK && (t1-t0) < micros_to_ticks(1000));
if (*p == 0)
panic("fxp_getstat: CU command failed to complete");
if (*p != SCM_DSC)
panic("fxp_getstat: bad magic");
stats.ets_recvErr=
fp->fxp_stat.sc_rx_crc +
fp->fxp_stat.sc_rx_align +
fp->fxp_stat.sc_rx_resource +
fp->fxp_stat.sc_rx_overrun +
fp->fxp_stat.sc_rx_cd +
fp->fxp_stat.sc_rx_short;
stats.ets_sendErr=
fp->fxp_stat.sc_tx_maxcol +
fp->fxp_stat.sc_tx_latecol +
fp->fxp_stat.sc_tx_crs;
stats.ets_OVW= fp->fxp_stat.sc_rx_overrun;
stats.ets_CRCerr= fp->fxp_stat.sc_rx_crc;
stats.ets_frameAll= fp->fxp_stat.sc_rx_align;
stats.ets_missedP= fp->fxp_stat.sc_rx_resource;
stats.ets_packetR= fp->fxp_stat.sc_rx_good;
stats.ets_packetT= fp->fxp_stat.sc_tx_good;
stats.ets_transDef= fp->fxp_stat.sc_tx_defered;
stats.ets_collision= fp->fxp_stat.sc_tx_totcol;
stats.ets_transAb= fp->fxp_stat.sc_tx_maxcol;
stats.ets_carrSense= fp->fxp_stat.sc_tx_crs;
stats.ets_fifoUnder= fp->fxp_stat.sc_tx_underrun;
stats.ets_fifoOver= fp->fxp_stat.sc_rx_overrun;
stats.ets_CDheartbeat= 0;
stats.ets_OWC= fp->fxp_stat.sc_tx_latecol;
r= sys_safecopyto(mp->DL_PROC, mp->DL_GRANT, 0, (vir_bytes)&stats,
sizeof(stats), D);
if (r != OK)
panic("fxp_getstat_s: sys_safecopyto failed: %d", r);
mp->m_type= DL_STAT_REPLY;
mp->DL_PORT= dl_port;
mp->DL_STAT= OK;
r= send(mp->m_source, mp);
if (r != OK)
panic("fxp_getstat_s: send failed: %d", r);
}
/*===========================================================================*
* fxp_getname *
*===========================================================================*/
static void fxp_getname(message *mp)
{
int r;
strncpy(mp->DL_NAME, progname, sizeof(mp->DL_NAME));
mp->DL_NAME[sizeof(mp->DL_NAME)-1]= '\0';
mp->m_type= DL_NAME_REPLY;
r= send(mp->m_source, mp);
if (r != OK)
panic("fxp_getname: send failed: %d", r);
}
/*===========================================================================*
* fxp_handler *
*===========================================================================*/
static void fxp_handler(fxp_t *fp)
{
int port;
u16_t isr;
RAND_UPDATE
port= fp->fxp_base_port;
/* Ack interrupt */
isr= fxp_inb(port, SCB_INT_STAT);
fxp_outb(port, SCB_INT_STAT, isr);
if (isr & SIS_FR)
{
isr &= ~SIS_FR;
if (!fp->fxp_got_int && (fp->fxp_flags & FF_READING))
{
fp->fxp_got_int= TRUE;
interrupt(fxp_tasknr);
}
}
if (isr & SIS_CNA)
{
isr &= ~SIS_CNA;
if (!fp->fxp_tx_idle)
{
fp->fxp_send_int= TRUE;
if (!fp->fxp_got_int)
{
fp->fxp_got_int= TRUE;
interrupt(fxp_tasknr);
}
}
}
if (isr & SIS_RNR)
{
isr &= ~SIS_RNR;
/* Assume that receive buffer is full of packets. fxp_readv
* will restart the RU.
*/
fp->fxp_rx_need_restart= 1;
}
if (isr)
{
printf("fxp_handler: unhandled interrupt: isr = 0x%02x\n",
isr);
}
}
/*===========================================================================*
* fxp_check_ints *
*===========================================================================*/
static void fxp_check_ints(fxp_t *fp)
{
int n, fxp_flags, prev_tail;
int fxp_tx_tail, fxp_tx_nbuf, fxp_tx_threshold;
port_t port;
u32_t busaddr;
u16_t tx_status;
u8_t scb_status;
struct tx *txp;
fxp_flags= fp->fxp_flags;
if (fxp_flags & FF_READING)
{
if (!(fp->fxp_rx_buf[fp->fxp_rx_head].rfd_status & RFDS_C))
; /* Nothing */
else if (fp->fxp_rx_mess.m_type == DL_READV)
{
fxp_readv(&fp->fxp_rx_mess, TRUE /* from int */,
TRUE /* vectored */);
}
else if (fp->fxp_rx_mess.m_type == DL_READV_S)
{
fxp_readv_s(&fp->fxp_rx_mess, TRUE /* from int */);
}
else
{
assert(fp->fxp_rx_mess.m_type == DL_READ);
fxp_readv(&fp->fxp_rx_mess, TRUE /* from int */,
FALSE /* !vectored */);
}
}
if (fp->fxp_tx_idle)
; /* Nothing to do */
else if (fp->fxp_send_int)
{
fp->fxp_send_int= FALSE;
fxp_tx_tail= fp->fxp_tx_tail;
fxp_tx_nbuf= fp->fxp_tx_nbuf;
n= 0;
for (;;)
{
txp= &fp->fxp_tx_buf[fxp_tx_tail];
tx_status= txp->tx_status;
if (!(tx_status & TXS_C))
break;
n++;
assert(tx_status & TXS_OK);
if (tx_status & TXS_U)
{
fxp_tx_threshold= fp->fxp_tx_threshold;
if (fxp_tx_threshold < TXTT_MAX)
{
fxp_tx_threshold++;
fp->fxp_tx_threshold= fxp_tx_threshold;
}
printf(
"fxp_check_ints: fxp_tx_threshold = 0x%x\n",
fxp_tx_threshold);
}
if (txp->tx_command & TXC_EL)
{
fp->fxp_tx_idle= 1;
break;
}
fxp_tx_tail++;
if (fxp_tx_tail == fxp_tx_nbuf)
fxp_tx_tail= 0;
assert(fxp_tx_tail < fxp_tx_nbuf);
}
if (fp->fxp_need_conf)
{
/* Check the status of the CU */
port= fp->fxp_base_port;
scb_status= fxp_inb(port, SCB_STATUS);
if ((scb_status & SS_CUS_MASK) != SS_CU_IDLE)
{
/* Nothing to do */
printf("scb_status = 0x%x\n", scb_status);
}
else
{
printf("fxp_check_ints: fxp_need_conf\n");
fp->fxp_need_conf= FALSE;
fxp_do_conf(fp);
}
}
if (n)
{
if (!fp->fxp_tx_idle)
{
fp->fxp_tx_tail= fxp_tx_tail;
/* Check the status of the CU */
port= fp->fxp_base_port;
scb_status= fxp_inb(port, SCB_STATUS);
if ((scb_status & SS_CUS_MASK) != SS_CU_IDLE)
{
/* Nothing to do */
printf("scb_status = 0x%x\n",
scb_status);
}
else
{
if (fxp_tx_tail == 0)
prev_tail= fxp_tx_nbuf-1;
else
prev_tail= fxp_tx_tail-1;
busaddr= fp->fxp_tx_buf[prev_tail].
tx_linkaddr;
fxp_cu_ptr_cmd(fp, SC_CU_START,
busaddr, 1 /* check idle */);
}
}
if (fp->fxp_flags & FF_SEND_AVAIL)
{
if (fp->fxp_tx_mess.m_type == DL_WRITEV)
{
fxp_writev(&fp->fxp_tx_mess,
TRUE /* from int */,
TRUE /* vectored */);
}
else if (fp->fxp_tx_mess.m_type == DL_WRITEV_S)
{
fxp_writev_s(&fp->fxp_tx_mess,
TRUE /* from int */);
}
else
{
assert(fp->fxp_tx_mess.m_type ==
DL_WRITE);
fxp_writev(&fp->fxp_tx_mess,
TRUE /* from int */,
FALSE /* !vectored */);
}
}
}
}
if (fp->fxp_report_link)
fxp_report_link(fp);
if (fp->fxp_flags & (FF_PACK_SENT | FF_PACK_RECV))
reply(fp, OK, TRUE);
}
/*===========================================================================*
* fxp_watchdog_f *
*===========================================================================*/
static void fxp_watchdog_f(tp)
timer_t *tp;
{
int i;
fxp_t *fp;
tmr_arg(&fxp_watchdog)->ta_int= 0;
fxp_set_timer(&fxp_watchdog, system_hz, fxp_watchdog_f);
for (i= 0, fp = &fxp_table[0]; i<FXP_PORT_NR; i++, fp++)
{
if (fp->fxp_mode != FM_ENABLED)
continue;
/* Handle race condition, MII interface mgith be busy */
if(!fp->fxp_mii_busy)
{
/* Check the link status. */
if (fxp_link_changed(fp))
{
#if VERBOSE
printf("fxp_watchdog_f: link changed\n");
#endif
fp->fxp_report_link= TRUE;
fp->fxp_got_int= TRUE;
interrupt(fxp_tasknr);
}
}
if (!(fp->fxp_flags & FF_SEND_AVAIL))
{
/* Assume that an idle system is alive */
fp->fxp_tx_alive= TRUE;
continue;
}
if (fp->fxp_tx_alive)
{
fp->fxp_tx_alive= FALSE;
continue;
}
fp->fxp_need_reset= TRUE;
fp->fxp_got_int= TRUE;
interrupt(fxp_tasknr);
}
}
/*===========================================================================*
* fxp_link_changed *
*===========================================================================*/
static int fxp_link_changed(fp)
fxp_t *fp;
{
u16_t scr;
scr= mii_read(fp, MII_SCR);
scr &= ~(MII_SCR_RES|MII_SCR_RES_1);
return (fp->fxp_mii_scr != scr);
}
/*===========================================================================*
* fxp_report_link *
*===========================================================================*/
static void fxp_report_link(fxp_t *fp)
{
u16_t mii_ctrl, mii_status, mii_id1, mii_id2,
mii_ana, mii_anlpa, mii_ane, mii_extstat,
mii_ms_ctrl, mii_ms_status, scr;
u32_t oui;
int model, rev;
int f, link_up, ms_regs;
/* Assume an 82555 (compatible) PHY. The should be changed for
* 82557 NICs with different PHYs
*/
ms_regs= 0; /* No master/slave registers. */
fp->fxp_report_link= FALSE;
scr= mii_read(fp, MII_SCR);
scr &= ~(MII_SCR_RES|MII_SCR_RES_1);
fp->fxp_mii_scr= scr;
mii_ctrl= mii_read(fp, MII_CTRL);
mii_read(fp, MII_STATUS); /* Read the status register twice, why? */
mii_status= mii_read(fp, MII_STATUS);
mii_id1= mii_read(fp, MII_PHYID_H);
mii_id2= mii_read(fp, MII_PHYID_L);
mii_ana= mii_read(fp, MII_ANA);
mii_anlpa= mii_read(fp, MII_ANLPA);
mii_ane= mii_read(fp, MII_ANE);
if (mii_status & MII_STATUS_EXT_STAT)
mii_extstat= mii_read(fp, MII_EXT_STATUS);
else
mii_extstat= 0;
if (ms_regs)
{
mii_ms_ctrl= mii_read(fp, MII_MS_CTRL);
mii_ms_status= mii_read(fp, MII_MS_STATUS);
}
else
{
mii_ms_ctrl= 0;
mii_ms_status= 0;
}
/* How do we know about the link status? */
link_up= !!(mii_status & MII_STATUS_LS);
fp->fxp_link_up= link_up;
if (!link_up)
{
#if VERBOSE
printf("%s: link down\n", fp->fxp_name);
#endif
return;
}
oui= (mii_id1 << MII_PH_OUI_H_C_SHIFT) |
((mii_id2 & MII_PL_OUI_L_MASK) >> MII_PL_OUI_L_SHIFT);
model= ((mii_id2 & MII_PL_MODEL_MASK) >> MII_PL_MODEL_SHIFT);
rev= (mii_id2 & MII_PL_REV_MASK);
#if VERBOSE
printf("OUI 0x%06lx, Model 0x%02x, Revision 0x%x\n", oui, model, rev);
#endif
if (mii_ctrl & (MII_CTRL_LB|MII_CTRL_PD|MII_CTRL_ISO))
{
printf("%s: PHY: ", fp->fxp_name);
f= 1;
if (mii_ctrl & MII_CTRL_LB)
{
printf("loopback mode");
f= 0;
}
if (mii_ctrl & MII_CTRL_PD)
{
if (!f) printf(", ");
f= 0;
printf("powered down");
}
if (mii_ctrl & MII_CTRL_ISO)
{
if (!f) printf(", ");
f= 0;
printf("isolated");
}
printf("\n");
return;
}
if (!(mii_ctrl & MII_CTRL_ANE))
{
printf("%s: manual config: ", fp->fxp_name);
switch(mii_ctrl & (MII_CTRL_SP_LSB|MII_CTRL_SP_MSB))
{
case MII_CTRL_SP_10: printf("10 Mbps"); break;
case MII_CTRL_SP_100: printf("100 Mbps"); break;
case MII_CTRL_SP_1000: printf("1000 Mbps"); break;
case MII_CTRL_SP_RES: printf("reserved speed"); break;
}
if (mii_ctrl & MII_CTRL_DM)
printf(", full duplex");
else
printf(", half duplex");
printf("\n");
return;
}
if (!debug) goto resspeed;
printf("%s: ", fp->fxp_name);
mii_print_stat_speed(mii_status, mii_extstat);
printf("\n");
if (!(mii_status & MII_STATUS_ANC))
printf("%s: auto-negotiation not complete\n", fp->fxp_name);
if (mii_status & MII_STATUS_RF)
printf("%s: remote fault detected\n", fp->fxp_name);
if (!(mii_status & MII_STATUS_ANA))
{
printf("%s: local PHY has no auto-negotiation ability\n",
fp->fxp_name);
}
if (!(mii_status & MII_STATUS_LS))
printf("%s: link down\n", fp->fxp_name);
if (mii_status & MII_STATUS_JD)
printf("%s: jabber condition detected\n", fp->fxp_name);
if (!(mii_status & MII_STATUS_EC))
{
printf("%s: no extended register set\n", fp->fxp_name);
goto resspeed;
}
if (!(mii_status & MII_STATUS_ANC))
goto resspeed;
printf("%s: local cap.: ", fp->fxp_name);
if (mii_ms_ctrl & (MII_MSC_1000T_FD | MII_MSC_1000T_HD))
{
printf("1000 Mbps: T-");
switch(mii_ms_ctrl & (MII_MSC_1000T_FD | MII_MSC_1000T_HD))
{
case MII_MSC_1000T_FD: printf("FD"); break;
case MII_MSC_1000T_HD: printf("HD"); break;
default: printf("FD/HD"); break;
}
if (mii_ana)
printf(", ");
}
mii_print_techab(mii_ana);
printf("\n");
if (mii_ane & MII_ANE_PDF)
printf("%s: parallel detection fault\n", fp->fxp_name);
if (!(mii_ane & MII_ANE_LPANA))
{
printf("%s: link-partner does not support auto-negotiation\n",
fp->fxp_name);
goto resspeed;
}
printf("%s: remote cap.: ", fp->fxp_name);
if (mii_ms_ctrl & (MII_MSC_1000T_FD | MII_MSC_1000T_HD))
if (mii_ms_status & (MII_MSS_LP1000T_FD | MII_MSS_LP1000T_HD))
{
printf("1000 Mbps: T-");
switch(mii_ms_status &
(MII_MSS_LP1000T_FD | MII_MSS_LP1000T_HD))
{
case MII_MSS_LP1000T_FD: printf("FD"); break;
case MII_MSS_LP1000T_HD: printf("HD"); break;
default: printf("FD/HD"); break;
}
if (mii_anlpa)
printf(", ");
}
mii_print_techab(mii_anlpa);
printf("\n");
if (ms_regs)
{
printf("%s: ", fp->fxp_name);
if (mii_ms_ctrl & MII_MSC_MS_MANUAL)
{
printf("manual %s",
(mii_ms_ctrl & MII_MSC_MS_VAL) ?
"MASTER" : "SLAVE");
}
else
{
printf("%s device",
(mii_ms_ctrl & MII_MSC_MULTIPORT) ?
"multiport" : "single-port");
}
if (mii_ms_ctrl & MII_MSC_RES)
printf(" reserved<0x%x>", mii_ms_ctrl & MII_MSC_RES);
printf(": ");
if (mii_ms_status & MII_MSS_FAULT)
printf("M/S config fault");
else if (mii_ms_status & MII_MSS_MASTER)
printf("MASTER");
else
printf("SLAVE");
printf("\n");
}
if (mii_ms_status & (MII_MSS_LP1000T_FD|MII_MSS_LP1000T_HD))
{
if (!(mii_ms_status & MII_MSS_LOCREC))
{
printf("%s: local receiver not OK\n",
fp->fxp_name);
}
if (!(mii_ms_status & MII_MSS_REMREC))
{
printf("%s: remote receiver not OK\n",
fp->fxp_name);
}
}
if (mii_ms_status & (MII_MSS_RES|MII_MSS_IDLE_ERR))
{
printf("%s", fp->fxp_name);
if (mii_ms_status & MII_MSS_RES)
printf(" reserved<0x%x>", mii_ms_status & MII_MSS_RES);
if (mii_ms_status & MII_MSS_IDLE_ERR)
{
printf(" idle error %d",
mii_ms_status & MII_MSS_IDLE_ERR);
}
printf("\n");
}
resspeed:
#if VERBOSE
printf("%s: link up, %d Mbps, %s duplex\n",
fp->fxp_name, (scr & MII_SCR_100) ? 100 : 10,
(scr & MII_SCR_FD) ? "full" : "half");
#endif
;
}
/*===========================================================================*
* reply *
*===========================================================================*/
static void reply(fp, err, may_block)
fxp_t *fp;
int err;
int may_block;
{
message reply;
int status;
int r;
status = 0;
if (fp->fxp_flags & FF_PACK_SENT)
status |= DL_PACK_SEND;
if (fp->fxp_flags & FF_PACK_RECV)
status |= DL_PACK_RECV;
reply.m_type = DL_TASK_REPLY;
reply.DL_PORT = fp - fxp_table;
reply.DL_PROC = fp->fxp_client;
reply.DL_STAT = status | ((u32_t) err << 16);
reply.DL_COUNT = fp->fxp_read_s;
#if 0
reply.DL_CLCK = get_uptime();
#else
reply.DL_CLCK = 0;
#endif
r= send(fp->fxp_client, &reply);
if (r == ELOCKED && may_block)
{
#if 0
printW(); printf("send locked\n");
#endif
return;
}
if (r < 0)
panic("fxp: send failed: %d", r);
fp->fxp_read_s = 0;
fp->fxp_flags &= ~(FF_PACK_SENT | FF_PACK_RECV);
}
/*===========================================================================*
* mess_reply *
*===========================================================================*/
static void mess_reply(req, reply_mess)
message *req;
message *reply_mess;
{
if (send(req->m_source, reply_mess) != OK)
panic("fxp: unable to mess_reply");
}
/*===========================================================================*
* eeprom_read *
*===========================================================================*/
PRIVATE u16_t eeprom_read(fp, reg)
fxp_t *fp;
int reg;
{
port_t port;
u16_t v;
int b, i, alen;
alen= fp->fxp_ee_addrlen;
if (!alen)
{
eeprom_addrsize(fp);
alen= fp->fxp_ee_addrlen;
assert(alen == 6 || alen == 8);
}
port= fp->fxp_base_port;
fxp_outb(port, CSR_EEPROM, CE_EECS); /* Enable EEPROM */
v= EEPROM_READ_PREFIX;
for (i= EEPROM_PREFIX_LEN-1; i >= 0; i--)
{
b= ((v & (1 << i)) ? CE_EEDI : 0);
fxp_outb(port, CSR_EEPROM, CE_EECS | b); /* bit */
fxp_outb(port, CSR_EEPROM, CE_EECS | b | CE_EESK); /* Clock */
micro_delay(EESK_PERIOD/2+1);
fxp_outb(port, CSR_EEPROM, CE_EECS | b);
micro_delay(EESK_PERIOD/2+1);
}
v= reg;
for (i= alen-1; i >= 0; i--)
{
b= ((v & (1 << i)) ? CE_EEDI : 0);
fxp_outb(port, CSR_EEPROM, CE_EECS | b); /* bit */
fxp_outb(port, CSR_EEPROM, CE_EECS | b | CE_EESK); /* Clock */
micro_delay(EESK_PERIOD/2+1);
fxp_outb(port, CSR_EEPROM, CE_EECS | b);
micro_delay(EESK_PERIOD/2+1);
}
v= 0;
for (i= 0; i<16; i++)
{
fxp_outb(port, CSR_EEPROM, CE_EECS | CE_EESK); /* Clock */
micro_delay(EESK_PERIOD/2+1);
b= !!(fxp_inb(port, CSR_EEPROM) & CE_EEDO);
v= (v << 1) | b;
fxp_outb(port, CSR_EEPROM, CE_EECS );
micro_delay(EESK_PERIOD/2+1);
}
fxp_outb(port, CSR_EEPROM, 0); /* Disable EEPROM */
micro_delay(EECS_DELAY);
return v;
}
/*===========================================================================*
* eeprom_addrsize *
*===========================================================================*/
PRIVATE void eeprom_addrsize(fp)
fxp_t *fp;
{
port_t port;
u16_t v;
int b, i;
port= fp->fxp_base_port;
/* Try to find out the size of the EEPROM */
fxp_outb(port, CSR_EEPROM, CE_EECS); /* Enable EEPROM */
v= EEPROM_READ_PREFIX;
for (i= EEPROM_PREFIX_LEN-1; i >= 0; i--)
{
b= ((v & (1 << i)) ? CE_EEDI : 0);
fxp_outb(port, CSR_EEPROM, CE_EECS | b); /* bit */
fxp_outb(port, CSR_EEPROM, CE_EECS | b | CE_EESK); /* Clock */
micro_delay(EESK_PERIOD/2+1);
fxp_outb(port, CSR_EEPROM, CE_EECS | b);
micro_delay(EESK_PERIOD/2+1);
}
for (i= 0; i<32; i++)
{
b= 0;
fxp_outb(port, CSR_EEPROM, CE_EECS | b); /* bit */
fxp_outb(port, CSR_EEPROM, CE_EECS | b | CE_EESK); /* Clock */
micro_delay(EESK_PERIOD/2+1);
fxp_outb(port, CSR_EEPROM, CE_EECS | b);
micro_delay(EESK_PERIOD/2+1);
v= fxp_inb(port, CSR_EEPROM);
if (!(v & CE_EEDO))
break;
}
if (i >= 32)
panic("eeprom_addrsize: failed");
fp->fxp_ee_addrlen= i+1;
/* Discard 16 data bits */
for (i= 0; i<16; i++)
{
fxp_outb(port, CSR_EEPROM, CE_EECS | CE_EESK); /* Clock */
micro_delay(EESK_PERIOD/2+1);
fxp_outb(port, CSR_EEPROM, CE_EECS );
micro_delay(EESK_PERIOD/2+1);
}
fxp_outb(port, CSR_EEPROM, 0); /* Disable EEPROM */
micro_delay(EECS_DELAY);
#if VERBOSE
printf("%s EEPROM address length: %d\n",
fp->fxp_name, fp->fxp_ee_addrlen);
#endif
}
/*===========================================================================*
* mii_read *
*===========================================================================*/
PRIVATE u16_t mii_read(fp, reg)
fxp_t *fp;
int reg;
{
clock_t t0,t1;
port_t port;
u32_t v;
port= fp->fxp_base_port;
assert(!fp->fxp_mii_busy);
fp->fxp_mii_busy++;
if (!(fxp_inl(port, CSR_MDI_CTL) & CM_READY))
panic("mii_read: MDI not ready");
fxp_outl(port, CSR_MDI_CTL, CM_READ | (1 << CM_PHYADDR_SHIFT) |
(reg << CM_REG_SHIFT));
getuptime(&t0);
do {
v= fxp_inl(port, CSR_MDI_CTL);
if (v & CM_READY)
break;
} while (getuptime(&t1)==OK && (t1-t0) < micros_to_ticks(100000));
if (!(v & CM_READY))
panic("mii_read: MDI not ready after command");
fp->fxp_mii_busy--;
assert(!fp->fxp_mii_busy);
return v & CM_DATA_MASK;
}
/*===========================================================================*
* fxp_set_timer *
*===========================================================================*/
PRIVATE void fxp_set_timer(tp, delta, watchdog)
timer_t *tp; /* timer to be set */
clock_t delta; /* in how many ticks */
tmr_func_t watchdog; /* watchdog function to be called */
{
clock_t now; /* current time */
int r;
/* Get the current time. */
r= getuptime(&now);
if (r != OK)
panic("unable to get uptime from clock: %d", r);
/* Add the timer to the local timer queue. */
tmrs_settimer(&fxp_timers, tp, now + delta, watchdog, NULL);
/* Possibly reschedule an alarm call. This happens when a new timer
* is added in front.
*/
if (fxp_next_timeout == 0 ||
fxp_timers->tmr_exp_time < fxp_next_timeout)
{
fxp_next_timeout= fxp_timers->tmr_exp_time;
#if VERBOSE
printf("fxp_set_timer: calling sys_setalarm for %d (now+%d)\n",
fxp_next_timeout, fxp_next_timeout-now);
#endif
r= sys_setalarm(fxp_next_timeout, 1);
if (r != OK)
panic("unable to set synchronous alarm: %d", r);
}
}
/*===========================================================================*
* fxp_expire_tmrs *
*===========================================================================*/
PRIVATE void fxp_expire_timers()
{
/* A synchronous alarm message was received. Check if there are any expired
* timers. Possibly reschedule the next alarm.
*/
clock_t now; /* current time */
int r;
/* Get the current time to compare the timers against. */
r= getuptime(&now);
if (r != OK)
panic("Unable to get uptime from clock: %d", r);
/* Scan the timers queue for expired timers. Dispatch the watchdog function
* for each expired timers. Possibly a new alarm call must be scheduled.
*/
tmrs_exptimers(&fxp_timers, now, NULL);
if (fxp_timers == NULL)
fxp_next_timeout= TMR_NEVER;
else
{ /* set new alarm */
fxp_next_timeout = fxp_timers->tmr_exp_time;
r= sys_setalarm(fxp_next_timeout, 1);
if (r != OK)
panic("Unable to set synchronous alarm: %d", r);
}
}
static u8_t do_inb(port_t port)
{
int r;
u32_t value;
r= sys_inb(port, &value);
if (r != OK)
panic("sys_inb failed: %d", r);
return value;
}
static u32_t do_inl(port_t port)
{
int r;
u32_t value;
r= sys_inl(port, &value);
if (r != OK)
panic("sys_inl failed: %d", r);
return value;
}
static void do_outb(port_t port, u8_t value)
{
int r;
r= sys_outb(port, value);
if (r != OK)
panic("sys_outb failed: %d", r);
}
static void do_outl(port_t port, u32_t value)
{
int r;
r= sys_outl(port, value);
if (r != OK)
panic("sys_outl failed: %d", r);
}
PRIVATE void tell_dev(buf, size, pci_bus, pci_dev, pci_func)
vir_bytes buf;
size_t size;
int pci_bus;
int pci_dev;
int pci_func;
{
int r;
endpoint_t dev_e;
u32_t u32;
message m;
r= ds_retrieve_label_num("amddev", &u32);
if (r != OK)
{
#if 0
printf(
"fxp`tell_dev: ds_retrieve_label_num failed for 'amddev': %d\n",
r);
#endif
return;
}
dev_e= u32;
m.m_type= IOMMU_MAP;
m.m2_i1= pci_bus;
m.m2_i2= pci_dev;
m.m2_i3= pci_func;
m.m2_l1= buf;
m.m2_l2= size;
r= sendrec(dev_e, &m);
if (r != OK)
{
printf("fxp`tell_dev: sendrec to %d failed: %d\n",
dev_e, r);
return;
}
if (m.m_type != OK)
{
printf("fxp`tell_dev: dma map request failed: %d\n",
m.m_type);
return;
}
}
/*
* $PchId: fxp.c,v 1.4 2005/01/31 22:10:37 philip Exp $
*/
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