As I said,
My target uses SMSC LAN91C111 chip,CPU is SH7709S.
As ethernet interrupt,uses IRQ3 line.
I build "net" template,eCos source is updated by CVS checkout.
As I inserted LAN91C111's mask routine in the ISR,
I succeeded to entered into DSR.
(This interrupt was caused not by eCos-proper code, but by my tampered
routine.I will later explain.)
But although RCV-INT is assserted,delivering-packet routine never
called,
so I entered repetedly ISR and DSR.
Then I discovered LAN91C111 driver's receive routine was never called.
Please forgive me long mail,but I try to
inform you as correctly as possible.
First I relate current problem,and later describe what I have tampered
with.
I register SMSC interrupt ruoitne
in \packages\devs\eth\smsc\lan91cxx\current\src\if_lan91cxx.c's
smsc_lan91cxx_init(struct cyg_netdevtab_entry *tab)
like this,
#ifndef CYGPKG_IO_ETH_DRIVERS_STAND_ALONE
// Initialize environment, setup interrupt handler
cyg_drv_interrupt_create(cpd->interrupt,
CYGNUM_DEVS_ETH_SMSC_LAN91CXX_INT_PRIO,
(cyg_addrword_t)sc, // Data item passed
to interrupt handler
(cyg_ISR_t *)lan91cxx_isr,
(cyg_DSR_t *)eth_drv_dsr, // The logical
driver DSR
&lan91cxx_interrupt_handle,
&lan91cxx_interrupt);
cyg_drv_interrupt_attach(lan91cxx_interrupt_handle);
#endif // !CYGPKG_IO_ETH_DRIVERS_STAND_ALONE
cyg_drv_interrupt_acknowledge(cpd->interrupt);
cyg_drv_interrupt_unmask(cpd->interrupt);
And register LAN91C111 driver in my target's
\packages\devs\eth\sh\inserter\current\include\devs_eth_inserter.inl.
I think this is important so I put on all content.
#include <pkgconf/system.h>
#include <pkgconf/devs_eth_sh_inserter.h>
#include <cyg/hal/hal_intr.h>
// MAC address is stored as a Redboot config option
#ifdef CYGPKG_REDBOOT
#include <pkgconf/redboot.h>
#ifdef CYGSEM_REDBOOT_FLASH_CONFIG
#include <redboot.h>
#include <flash_config.h>
#define LAN91CXX_IS_LAN91C111
RedBoot_config_option("Network hardware address [MAC]",
inserter_esa,
ALWAYS_ENABLED, true,
CONFIG_ESA, 0
);
#endif
#endif
// ESA address fetch function
static void inserter_get_ESA(struct lan91cxx_priv_data *cpd)
{
// Fetch hardware address from RedBoot config
#if defined(CYGSEM_DEVS_ETH_SH_INSERTER_REDBOOT_ESA)
#if defined(CYGPKG_REDBOOT) && \
defined(CYGSEM_REDBOOT_FLASH_CONFIG)
flash_get_config("inserter_esa", cpd->enaddr, CONFIG_ESA);
#else
#error "No RedBoot flash configuration to store ESA"
#endif
#else
unsigned char static_esa[] = CYGDAT_DEVS_ETH_SH_INSERTER_ESA;
memcpy(cpd->enaddr, static_esa, 6);
#endif
}
static lan91cxx_priv_data lan91cxx_eth0_priv_data = {
config_enaddr : inserter_get_ESA,
#ifndef CYGSEM_DEVS_ETH_SH_INSERTER_REDBOOT_ESA
enaddr: CYGDAT_DEVS_ETH_SH_INSERTER_ESA,
hardwired_esa : true,
#else
hardwired_esa : false,
#endif
#if 0
base : (unsigned short *) SA1110_FHH_ETH_IOBASE,
attbase : (unsigned char *) SA1110_FHH_ETH_MMBASE,
interrupt : SA1110_IRQ_GPIO_ETH
#else
base : (unsigned short *) 0xa8000000,
interrupt : 9,
#endif
};
ETH_DRV_SC(lan91cxx_sc,
&lan91cxx_eth0_priv_data, // Driver specific data
CYGDAT_DEVS_ETH_SH_INSERTER_NAME, // Name for device
lan91cxx_start,
lan91cxx_stop,
lan91cxx_control,
lan91cxx_can_send,
lan91cxx_send,
lan91cxx_recv,
lan91cxx_deliver,
lan91cxx_poll,
lan91cxx_int_vector
);
NETDEVTAB_ENTRY(lan91cxx_netdev,
"lan91cxx_" CYGDAT_DEVS_ETH_SH_INSERTER_NAME,
smsc_lan91cxx_init,
&lan91cxx_sc);
//EOF devs_eth_inserter.inl
I found ETH_DRV_SC definition as below.
\packages\io\eth\current\include\eth_drv.h
#define
ETH_DRV_SC(sc,priv,name,start,stop,control,can_send,send,recv,deliver,poll,int_vector)
\
static void start(struct eth_drv_sc *sc, unsigned char *enaddr, int
flags); \
static void stop(struct eth_drv_sc *sc); \
static int control(struct eth_drv_sc *sc, unsigned long key, void
*data, int data_length); \
static int can_send(struct eth_drv_sc *sc); \
static void send(struct eth_drv_sc *sc, struct eth_drv_sg *sg_list,
int sg_len, int total, unsigned long key); \
static void recv(struct eth_drv_sc *sc, struct eth_drv_sg *sg_list,
int sg_len); \
static void deliver(struct eth_drv_sc *sc); \
static void poll(struct eth_drv_sc *sc); \
static int int_vector(struct eth_drv_sc *sc); \
static struct eth_hwr_funs sc##_funs = { \
start, \
stop, \
control, \
can_send, \
send, \
recv, \
deliver, \
poll, \
int_vector, \
ð_drv_funs, \
(struct eth_drv_funs *)0 }; \
struct eth_drv_sc sc = {&sc##_funs, priv, name};
I assume this is developed like below,
#define
ETH_DRV_SC(lan91cxx_sc,&lan91cxx_eth0_priv_data,CYGDAT_DEVS_ETH_SH_INSERTER_NAME,lan91cxx_start,lan91cxx_stop,lan91cxx_control,lan91cxx_can_send,lan91cxx_send,lan91cxx_recv,lan91cxx_deliver,lan91cxx_poll,lan91cxx_int_vector)
\
static void lan91cxx_start(struct eth_drv_sc *lan91cxx_sc, unsigned
char *enaddr, int flags); \
static void lan91cxx_stop(struct eth_drv_sc *lan91cxx_sc); \
static int lan91cxx_control(struct eth_drv_sc *lan91cxx_sc, unsigned
long key, void *data, int data_length); \
static int lan91cxx_can_send(struct eth_drv_sc *lan91cxx_sc); \
static void lan91cxx_send(struct eth_drv_sc *lan91cxx_sc, struct
eth_drv_sg *sg_list, int sg_len, int total, unsigned long key); \
static void lan91cxx_recv(struct eth_drv_sc *lan91cxx_sc, struct
eth_drv_sg *sg_list, int sg_len); \
static void lan91cxx_deliver(struct eth_drv_sc *lan91cxx_sc); \
static void lan91cxx_pollpoll(struct eth_drv_sc *lan91cxx_sc); \
static int lan91cxx_int_vector(struct eth_drv_sc *lan91cxx_sc); \
static struct eth_hwr_funs lan91cxx_sc_funs = { \
lan91cxx_start, \
lan91cxx_stop, \
lan91cxx_control, \
lan91cxx_can_send, \
lan91cxx_send, \
lan91cxx_recv, \
lan91cxx_deliver, \
lan91cxx_poll, \
lan91cxx_int_vector, \
ð_drv_funs, \
(struct eth_drv_funs *)0 }; \
struct eth_drv_sc lan91cxx_sc = {&lan91cxx_sc_funs,
&lan91cxx_eth0_priv_data, CYGDAT_DEVS_ETH_SH_INSERTER_NAME};
I assume lan91cxx_recv must be called to operate on packets,
but it was never called.
I traced DSR routine
DSR is this
\packages\io\eth\current\src\net\eth_drv.c
void
eth_drv_dsr(cyg_vector_t vector,
cyg_ucount32 count,
cyg_addrword_t data)
{
struct eth_drv_sc *sc = (struct eth_drv_sc *)data;
#ifdef CYGDBG_USE_ASSERTS
// then check that this really is a "sc"
{
cyg_netdevtab_entry_t *t;
for (t = &__NETDEVTAB__[0]; t != &__NETDEVTAB_END__; t++)
if ( ((struct eth_drv_sc *)t->device_instance) == sc )
break; // found it
CYG_ASSERT( t != &__NETDEVTAB_END__, "eth_drv_dsr: Failed to
find sc in NETDEVTAB" );
}
#endif // Checking code
sc->state |= ETH_DRV_NEEDS_DELIVERY;
ecos_synch_eth_drv_dsr(); // [request] run delivery function for
this dev
}
And in \packages\net\bsd_tcpip\current\src\ecos\timeout.c
void ecos_synch_eth_drv_dsr(void)
{
cyg_flag_setbits( &alarm_flag, 2 );
}
And in \packages\kernel\current\src\common\kapi.cxx
void cyg_flag_setbits( cyg_flag_t *flag, cyg_flag_value_t value)
__THROW
{
((Cyg_Flag *)flag)->setbits( value );
}
And in \packages\kernel\current\src\sync\flag.cxx
void
Cyg_Flag::setbits( Cyg_FlagValue arg )
{
CYG_REPORT_FUNCTION();
CYG_ASSERTCLASS( this, "Bad this pointer");
// Prevent preemption
Cyg_Scheduler::lock();
// OR in the argument to get a new flag value.
value |= arg;
// anyone waiting?
if ( !(queue.empty()) ) {
FlagWaitInfo *p;
Cyg_Thread *thread;
Cyg_ThreadQueue holding;
do {
thread = queue.dequeue();
p = (FlagWaitInfo *)(thread->get_wait_info());
CYG_ASSERT( (p->allmask == 0) != (p->anymask == 0),
"Both masks set" );
CYG_ASSERT( 0 == p->value_out, "Thread already awoken?" );
if ( ((p->allmask != 0) && (p->allmask & value) ==
p->allmask) ||
((p->anymask & value) != 0 ) ) {
// success! awaken the thread
thread->set_wake_reason( Cyg_Thread::DONE );
thread->wake();
// return the successful value to it
p->value_out = value;
// do we clear the value; is this the end?
if ( p->do_clear ) {
// we can break here but need to preserve ordering
value = 0;
// so let it cycle the whole queue regardless
}
}
else {
// preserve the entry on the holding queue
holding.enqueue( thread );
}
} while ( !(queue.empty()) );
// Now re-queue the unaffected threads back into the flag queue
while ( !(holding.empty()) ) {
queue.enqueue( holding.dequeue() );
}
}
// Unlock scheduler and allow other threads to run
Cyg_Scheduler::unlock();
CYG_REPORT_RETURN();
}
Truely,I cannot fathom this coding and
I would appreciate if you kindly teach me how lan91cxx_recv is to be
called.
Now I describe what I have tampered with in detail,please forgive me
lengthy details.
The beginning of the matter is when I ran eCos as it is,I couldn't
make LAN91C111 into LINK State,
LINK LED didn't light.So I inserted my own routine in order to operate
LAN91C111 into LINK State in top of
\packages\io\eth\current\src\net\eth_drv.c's eth_drv_init function
like below.
eth_drv_init(struct eth_drv_sc *sc, unsigned char *enaddr)
{
// this is my tampered coding
cyg_netdevtab_entry_t *t;
struct ifnet *ifp = &sc->sc_arpcom.ac_if;
#ifdef CYGPKG_NET_FREEBSD_STACK
int unit;
char *np, *xp;
#endif
// this is my tampered coding
for (t = &__NETDEVTAB__[0]; t != &__NETDEVTAB_END__; t++) {
log(LOG_INIT, "Init device '%s'\n", t->name);
if (smsc_91c111_init(t)) { // this is my concocted
routine
t->status = CYG_NETDEVTAB_STATUS_AVAIL;
} else {
// What to do if device init fails?
t->status = 0; // Device not [currently] available
}
}
and in order making LAN91C111 into LINK State it was necessary to use
interrupt so I enabled LAN91C111 interrupt in my concocted routine.
Above-mentioned interrupt was caused by my tampered code.At
LINK-established time interrupt happened.
On second thought, I realized my tampering was wrong.
So I quitted my tampering routine, I returned to eCos original source
and checked why couldn't make LINK LED lighed.
I discovered it never called lan91cxx routines(i.e. ETH_DRV_SC
routines).
Below is RedBoot output messages log.
I breaked lan91cxx_start() but never entered it.
I made DEBUG_FUNCTION() available.
-- RedBoot output messages log
My Flash ID is 4:22f9:0:19
eth_drv_init:enaddr=0x8c0005c4
Ethernet eth0: MAC address 00:40:31:08:01:00
IP: 172.16.1.200/255.255.255.0, Gateway: 172.16.1.1
Default server: 172.16.1.1
RedBoot(tm) bootstrap and debug environment [ROM]
Non-certified release, version UNKNOWN - built 16:50:29, Sep 19 2007
Platform: inserter (SH 7709S)
Copyright (C) 2000, 2001, 2002, 2003, 2004 Red Hat, Inc.
Copyright (C) 2003, 2004, 2005, 2006 eCosCentric Limited
RAM: 0x8c000000-0x90000000, [0x8c00bed0-0x8ffed000] available
FLASH: 0xa0000000 - 0xa0400000, 64 blocks of 0x00010000 bytes each.
== Executing boot script in 3.000 seconds - enter ^C to abort
RedBoot> fis load -b 0x8c010000 nc_slave
RedBoot> channel 1
RedBoot> go 0x8c010000
Network stack using 69632 bytes for misc space
69632 bytes for mbufs
139264 bytes for mbuf clusters
[cyg_net_init] Init: mbinit(0x00000000)
[cyg_net_init] Init: cyg_net_init_devs(0x00000000)
Init device 'lan91cxx_eth0'
smsc_lan91cxx_init
LAN91CXX - supposed BankReg @ a800000e = 3302
LAN91CXX - type: 9, rev: 1
LAN91CXX - status: 0069
LAN91CXX - static ESA: 00:40:31:08:01:00
[cyg_net_init] Init: loopattach(0x00000000)
[cyg_net_init] Init: ifinit(0x00000000)
[cyg_net_init] Init: domaininit(0x00000000)
[cyg_net_init] Init: cyg_net_add_domain(0x8c05a7b4)
New domain internet at 0x00000000
[cyg_net_init] Init: cyg_net_add_domain(0x8c05a1f8)
New domain route at 0x00000000
[cyg_net_init] Init: call_route_init(0x00000000)
[cyg_net_init] Done
Start Network Characterization - SLAVE
No load = 58470
Set background load = 20%
Set background load = 0%
High Load[20] = 37131 => 37%
Set background load = 20%
Set background load = 0%
Load[10] = 47736 => 19%
Set background load = 20%
Set background load = 0%
Final load[10] = 47853 => 19%
Start test for eth0
-- end of RedBoot output messages log
All matters considered,I deduce that
ETH_DRV_SC-table-reference-functions are not working.
I cannot understand where and how they are called.
Please teach me how to correctly call these functions.