Quelle fplustm.c
Sprache: C
// SPDX-License-Identifier: GPL-2.0-or-later
/******************************************************************************
*
* ( C ) Copyright 1998 , 1999 SysKonnect ,
* a business unit of Schneider & Koch & Co . Datensysteme GmbH .
*
* See the file " skfddi . c " for further information .
*
* The information in this file is provided " AS IS " without warranty .
*
******************************************************************************/
/*
* FORMAC + Driver for tag mode
*/
#include "h/types.h"
#include "h/fddi.h"
#include "h/smc.h"
#include "h/supern_2.h"
#include <linux/bitrev.h>
#include <linux/etherdevice.h>
#ifndef UNUSED
#ifdef lint
#define UNUSED(x) (x) = (x)
#else
#define UNUSED(x)
#endif
#endif
#define FM_ADDRX (FM_ADDET|FM_EXGPA0|FM_EXGPA1)
#define MS2BCLK(x) ((x)*12500 L)
#define US2BCLK(x) ((x)*1250 L)
/*
* prototypes for static function
*/
static void build_claim_beacon(struct s_smc *smc, u_long t_request);
static int init_mac(struct s_smc *smc, int all);
static void rtm_init(struct s_smc *smc);
static void smt_split_up_fifo(struct s_smc *smc);
#if (!defined (NO_SMT_PANIC) || defined (DEBUG))
static char write_mdr_warning [] = "E350 write_mdr() FM_SNPPND is set\n" ;
static char cam_warning [] = "E_SMT_004: CAM still busy\n" ;
#endif
#define DUMMY_READ() smc->hw.mc_dummy = (u_short) inp(ADDR(B0_RAP))
#define CHECK_NPP() { unsigned int k = 10000 ;\
while ((inpw(FM_A(FM_STMCHN)) & FM_SNPPND) && k) k--;\
if (!k) { \
SMT_PANIC(smc,SMT_E0130, SMT_E0130_MSG) ; \
} \
}
#define CHECK_CAM() { unsigned int k = 10 ;\
while (!(inpw(FM_A(FM_AFSTAT)) & FM_DONE) && k) k--;\
if (!k) { \
SMT_PANIC(smc,SMT_E0131, SMT_E0131_MSG) ; \
} \
}
const struct fddi_addr fddi_broadcast = {{0 xff,0 xff,0 xff,0 xff,0 xff,0 xff}};
static const struct fddi_addr null_addr = {{0 ,0 ,0 ,0 ,0 ,0 }};
static const struct fddi_addr dbeacon_multi = {{0 x01,0 x80,0 xc2,0 x00,0 x01,0 x00}};
static const u_short my_said = 0 xffff ; /* short address (n.u.) */
static const u_short my_sagp = 0 xffff ; /* short group address (n.u.) */
/*
* define my address
*/
#ifdef USE_CAN_ADDR
#define MA smc->hw.fddi_canon_addr
#else
#define MA smc->hw.fddi_home_addr
#endif
/*
* useful interrupt bits
*/
static const int mac_imsk1u = FM_STXABRS | FM_STXABRA0 | FM_SXMTABT ;
static const int mac_imsk1l = FM_SQLCKS | FM_SQLCKA0 | FM_SPCEPDS | FM_SPCEPDA0|
FM_STBURS | FM_STBURA0 ;
/* delete FM_SRBFL after tests */
static const int mac_imsk2u = FM_SERRSF | FM_SNFSLD | FM_SRCVOVR | FM_SRBFL |
FM_SMYCLM ;
static const int mac_imsk2l = FM_STRTEXR | FM_SDUPCLM | FM_SFRMCTR |
FM_SERRCTR | FM_SLSTCTR |
FM_STRTEXP | FM_SMULTDA | FM_SRNGOP ;
static const int mac_imsk3u = FM_SRCVOVR2 | FM_SRBFL2 ;
static const int mac_imsk3l = FM_SRPERRQ2 | FM_SRPERRQ1 ;
static const int mac_beacon_imsk2u = FM_SOTRBEC | FM_SMYBEC | FM_SBEC |
FM_SLOCLM | FM_SHICLM | FM_SMYCLM | FM_SCLM ;
static u_long mac_get_tneg(struct s_smc *smc)
{
u_long tneg ;
tneg = (u_long)((long )inpw(FM_A(FM_TNEG))<<5 ) ;
return (u_long)((tneg + ((inpw(FM_A(FM_TMRS))>>10 )&0 x1f)) |
0 xffe00000L) ;
}
void mac_update_counter(struct s_smc *smc)
{
smc->mib.m[MAC0].fddiMACFrame_Ct =
(smc->mib.m[MAC0].fddiMACFrame_Ct & 0 xffff0000L)
+ (u_short) inpw(FM_A(FM_FCNTR)) ;
smc->mib.m[MAC0].fddiMACLost_Ct =
(smc->mib.m[MAC0].fddiMACLost_Ct & 0 xffff0000L)
+ (u_short) inpw(FM_A(FM_LCNTR)) ;
smc->mib.m[MAC0].fddiMACError_Ct =
(smc->mib.m[MAC0].fddiMACError_Ct & 0 xffff0000L)
+ (u_short) inpw(FM_A(FM_ECNTR)) ;
smc->mib.m[MAC0].fddiMACT_Neg = mac_get_tneg(smc) ;
#ifdef SMT_REAL_TOKEN_CT
/*
* If the token counter is emulated it is updated in smt_event .
*/
TBD
#else
smt_emulate_token_ct( smc, MAC0 );
#endif
}
/*
* write long value into buffer memory over memory data register ( MDR ) ,
*/
static void write_mdr(struct s_smc *smc, u_long val)
{
CHECK_NPP() ;
MDRW(val) ;
}
#if 0
/*
* read long value from buffer memory over memory data register ( MDR ) ,
*/
static u_long read_mdr(struct s_smc *smc, unsigned int addr)
{
long p ;
CHECK_NPP() ;
MARR(addr) ;
outpw(FM_A(FM_CMDREG1),FM_IRMEMWO) ;
CHECK_NPP() ; /* needed for PCI to prevent from timeing violations */
/* p = MDRR() ; */ /* bad read values if the workaround */
/* smc->hw.mc_dummy = *((short volatile far *)(addr)))*/
/* is used */
p = (u_long)inpw(FM_A(FM_MDRU))<<16 ;
p += (u_long)inpw(FM_A(FM_MDRL)) ;
return p;
}
#endif
/*
* clear buffer memory
*/
static void init_ram(struct s_smc *smc)
{
u_short i ;
smc->hw.fp.fifo.rbc_ram_start = 0 ;
smc->hw.fp.fifo.rbc_ram_end =
smc->hw.fp.fifo.rbc_ram_start + RBC_MEM_SIZE ;
CHECK_NPP() ;
MARW(smc->hw.fp.fifo.rbc_ram_start) ;
for (i = smc->hw.fp.fifo.rbc_ram_start;
i < (u_short) (smc->hw.fp.fifo.rbc_ram_end-1 ); i++)
write_mdr(smc,0 L) ;
/* Erase the last byte too */
write_mdr(smc,0 L) ;
}
/*
* set receive FIFO pointer
*/
static void set_recvptr(struct s_smc *smc)
{
/*
* initialize the pointer for receive queue 1
*/
outpw(FM_A(FM_RPR1),smc->hw.fp.fifo.rx1_fifo_start) ; /* RPR1 */
outpw(FM_A(FM_SWPR1),smc->hw.fp.fifo.rx1_fifo_start) ; /* SWPR1 */
outpw(FM_A(FM_WPR1),smc->hw.fp.fifo.rx1_fifo_start) ; /* WPR1 */
outpw(FM_A(FM_EARV1),smc->hw.fp.fifo.tx_s_start-1 ) ; /* EARV1 */
/*
* initialize the pointer for receive queue 2
*/
if (smc->hw.fp.fifo.rx2_fifo_size) {
outpw(FM_A(FM_RPR2),smc->hw.fp.fifo.rx2_fifo_start) ;
outpw(FM_A(FM_SWPR2),smc->hw.fp.fifo.rx2_fifo_start) ;
outpw(FM_A(FM_WPR2),smc->hw.fp.fifo.rx2_fifo_start) ;
outpw(FM_A(FM_EARV2),smc->hw.fp.fifo.rbc_ram_end-1 ) ;
}
else {
outpw(FM_A(FM_RPR2),smc->hw.fp.fifo.rbc_ram_end-1 ) ;
outpw(FM_A(FM_SWPR2),smc->hw.fp.fifo.rbc_ram_end-1 ) ;
outpw(FM_A(FM_WPR2),smc->hw.fp.fifo.rbc_ram_end-1 ) ;
outpw(FM_A(FM_EARV2),smc->hw.fp.fifo.rbc_ram_end-1 ) ;
}
}
/*
* set transmit FIFO pointer
*/
static void set_txptr(struct s_smc *smc)
{
outpw(FM_A(FM_CMDREG2),FM_IRSTQ) ; /* reset transmit queues */
/*
* initialize the pointer for asynchronous transmit queue
*/
outpw(FM_A(FM_RPXA0),smc->hw.fp.fifo.tx_a0_start) ; /* RPXA0 */
outpw(FM_A(FM_SWPXA0),smc->hw.fp.fifo.tx_a0_start) ; /* SWPXA0 */
outpw(FM_A(FM_WPXA0),smc->hw.fp.fifo.tx_a0_start) ; /* WPXA0 */
outpw(FM_A(FM_EAA0),smc->hw.fp.fifo.rx2_fifo_start-1 ) ; /* EAA0 */
/*
* initialize the pointer for synchronous transmit queue
*/
if (smc->hw.fp.fifo.tx_s_size) {
outpw(FM_A(FM_RPXS),smc->hw.fp.fifo.tx_s_start) ;
outpw(FM_A(FM_SWPXS),smc->hw.fp.fifo.tx_s_start) ;
outpw(FM_A(FM_WPXS),smc->hw.fp.fifo.tx_s_start) ;
outpw(FM_A(FM_EAS),smc->hw.fp.fifo.tx_a0_start-1 ) ;
}
else {
outpw(FM_A(FM_RPXS),smc->hw.fp.fifo.tx_a0_start-1 ) ;
outpw(FM_A(FM_SWPXS),smc->hw.fp.fifo.tx_a0_start-1 ) ;
outpw(FM_A(FM_WPXS),smc->hw.fp.fifo.tx_a0_start-1 ) ;
outpw(FM_A(FM_EAS),smc->hw.fp.fifo.tx_a0_start-1 ) ;
}
}
/*
* init memory buffer management registers
*/
static void init_rbc(struct s_smc *smc)
{
u_short rbc_ram_addr ;
/*
* set unused pointers or permanent pointers
*/
rbc_ram_addr = smc->hw.fp.fifo.rx2_fifo_start - 1 ;
outpw(FM_A(FM_RPXA1),rbc_ram_addr) ; /* a1-send pointer */
outpw(FM_A(FM_WPXA1),rbc_ram_addr) ;
outpw(FM_A(FM_SWPXA1),rbc_ram_addr) ;
outpw(FM_A(FM_EAA1),rbc_ram_addr) ;
set_recvptr(smc) ;
set_txptr(smc) ;
}
/*
* init rx pointer
*/
static void init_rx(struct s_smc *smc)
{
struct s_smt_rx_queue *queue ;
/*
* init all tx data structures for receive queue 1
*/
smc->hw.fp.rx[QUEUE_R1] = queue = &smc->hw.fp.rx_q[QUEUE_R1] ;
queue->rx_bmu_ctl = (HW_PTR) ADDR(B0_R1_CSR) ;
queue->rx_bmu_dsc = (HW_PTR) ADDR(B4_R1_DA) ;
/*
* init all tx data structures for receive queue 2
*/
smc->hw.fp.rx[QUEUE_R2] = queue = &smc->hw.fp.rx_q[QUEUE_R2] ;
queue->rx_bmu_ctl = (HW_PTR) ADDR(B0_R2_CSR) ;
queue->rx_bmu_dsc = (HW_PTR) ADDR(B4_R2_DA) ;
}
/*
* set the TSYNC register of the FORMAC to regulate synchronous transmission
*/
void set_formac_tsync(struct s_smc *smc, long sync_bw)
{
outpw(FM_A(FM_TSYNC),(unsigned int ) (((-sync_bw) >> 5 ) & 0 xffff) ) ;
}
/*
* init all tx data structures
*/
static void init_tx(struct s_smc *smc)
{
struct s_smt_tx_queue *queue ;
/*
* init all tx data structures for the synchronous queue
*/
smc->hw.fp.tx[QUEUE_S] = queue = &smc->hw.fp.tx_q[QUEUE_S] ;
queue->tx_bmu_ctl = (HW_PTR) ADDR(B0_XS_CSR) ;
queue->tx_bmu_dsc = (HW_PTR) ADDR(B5_XS_DA) ;
#ifdef ESS
set_formac_tsync(smc,smc->ess.sync_bw) ;
#endif
/*
* init all tx data structures for the asynchronous queue 0
*/
smc->hw.fp.tx[QUEUE_A0] = queue = &smc->hw.fp.tx_q[QUEUE_A0] ;
queue->tx_bmu_ctl = (HW_PTR) ADDR(B0_XA_CSR) ;
queue->tx_bmu_dsc = (HW_PTR) ADDR(B5_XA_DA) ;
llc_recover_tx(smc) ;
}
static void mac_counter_init(struct s_smc *smc)
{
int i ;
u_long *ec ;
/*
* clear FORMAC + frame - , lost - and error counter
*/
outpw(FM_A(FM_FCNTR),0 ) ;
outpw(FM_A(FM_LCNTR),0 ) ;
outpw(FM_A(FM_ECNTR),0 ) ;
/*
* clear internal error counter structure
*/
ec = (u_long *)&smc->hw.fp.err_stats ;
for (i = (sizeof (struct err_st)/sizeof (long )) ; i ; i--)
*ec++ = 0 L ;
smc->mib.m[MAC0].fddiMACRingOp_Ct = 0 ;
}
/*
* set FORMAC address , and t_request
*/
static void set_formac_addr(struct s_smc *smc)
{
long t_requ = smc->mib.m[MAC0].fddiMACT_Req ;
outpw(FM_A(FM_SAID),my_said) ; /* set short address */
outpw(FM_A(FM_LAIL),(unsigned short )((smc->hw.fddi_home_addr.a[4 ]<<8 ) +
smc->hw.fddi_home_addr.a[5 ])) ;
outpw(FM_A(FM_LAIC),(unsigned short )((smc->hw.fddi_home_addr.a[2 ]<<8 ) +
smc->hw.fddi_home_addr.a[3 ])) ;
outpw(FM_A(FM_LAIM),(unsigned short )((smc->hw.fddi_home_addr.a[0 ]<<8 ) +
smc->hw.fddi_home_addr.a[1 ])) ;
outpw(FM_A(FM_SAGP),my_sagp) ; /* set short group address */
outpw(FM_A(FM_LAGL),(unsigned short )((smc->hw.fp.group_addr.a[4 ]<<8 ) +
smc->hw.fp.group_addr.a[5 ])) ;
outpw(FM_A(FM_LAGC),(unsigned short )((smc->hw.fp.group_addr.a[2 ]<<8 ) +
smc->hw.fp.group_addr.a[3 ])) ;
outpw(FM_A(FM_LAGM),(unsigned short )((smc->hw.fp.group_addr.a[0 ]<<8 ) +
smc->hw.fp.group_addr.a[1 ])) ;
/* set r_request regs. (MSW & LSW of TRT ) */
outpw(FM_A(FM_TREQ1),(unsigned short )(t_requ>>16 )) ;
outpw(FM_A(FM_TREQ0),(unsigned short )t_requ) ;
}
static void set_int(char *p, int l)
{
p[0 ] = (char )(l >> 24 ) ;
p[1 ] = (char )(l >> 16 ) ;
p[2 ] = (char )(l >> 8 ) ;
p[3 ] = (char )(l >> 0 ) ;
}
/*
* copy TX descriptor to buffer mem
* append FC field and MAC frame
* if more bit is set in descr
* append pointer to descriptor ( endless loop )
* else
* append ' end of chain ' pointer
*/
static void copy_tx_mac(struct s_smc *smc, u_long td, struct fddi_mac *mac,
unsigned int off, int len)
/* u_long td; transmit descriptor */
/* struct fddi_mac *mac; mac frame pointer */
/* unsigned int off; start address within buffer memory */
/* int len ; length of the frame including the FC */
{
int i ;
__le32 *p ;
CHECK_NPP() ;
MARW(off) ; /* set memory address reg for writes */
p = (__le32 *) mac ;
for (i = (len + 3 )/4 ; i ; i--) {
if (i == 1 ) {
/* last word, set the tag bit */
outpw(FM_A(FM_CMDREG2),FM_ISTTB) ;
}
write_mdr(smc,le32_to_cpu(*p)) ;
p++ ;
}
outpw(FM_A(FM_CMDREG2),FM_ISTTB) ; /* set the tag bit */
write_mdr(smc,td) ; /* write over memory data reg to buffer */
}
/*
BEGIN_MANUAL_ENTRY ( module ; tests ; 3 )
How to test directed beacon frames
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
o Insert a break point in the function build_claim_beacon ( )
before calling copy_tx_mac ( ) for building the claim frame .
o Modify the RM3_DETECT case so that the RM6_DETECT state
will always entered from the RM3_DETECT state ( function rmt_fsm ( ) ,
rmt . c )
o Compile the driver .
o Set the parameter TREQ in the protocol . ini or net . cfg to a
small value to make sure your station will win the claim
process .
o Start the driver .
o When you reach the break point , modify the SA and DA address
of the claim frame ( e . g . SA = DA = 10005 affffff ) .
o When you see RM3_DETECT and RM6_DETECT , observe the direct
beacon frames on the UPPSLANA .
END_MANUAL_ENTRY
*/
static void directed_beacon(struct s_smc *smc)
{
SK_LOC_DECL(__le32,a[2 ]) ;
/*
* set UNA in frame
* enable FORMAC to send endless queue of directed beacon
* important : the UNA starts at byte 1 ( not at byte 0 )
*/
* (char *) a = (char ) ((long )DBEACON_INFO<<24 L) ;
a[1 ] = 0 ;
memcpy((char *)a+1 , (char *) &smc->mib.m[MAC0].fddiMACUpstreamNbr, ETH_ALEN);
CHECK_NPP() ;
/* set memory address reg for writes */
MARW(smc->hw.fp.fifo.rbc_ram_start+DBEACON_FRAME_OFF+4 ) ;
write_mdr(smc,le32_to_cpu(a[0 ])) ;
outpw(FM_A(FM_CMDREG2),FM_ISTTB) ; /* set the tag bit */
write_mdr(smc,le32_to_cpu(a[1 ])) ;
outpw(FM_A(FM_SABC),smc->hw.fp.fifo.rbc_ram_start + DBEACON_FRAME_OFF) ;
}
/*
setup claim & beacon pointer
NOTE :
special frame packets end with a pointer to their own
descriptor , and the MORE bit is set in the descriptor
*/
static void build_claim_beacon(struct s_smc *smc, u_long t_request)
{
u_int td ;
int len ;
struct fddi_mac_sf *mac ;
/*
* build claim packet
*/
len = 17 ;
td = TX_DESCRIPTOR | ((((u_int)len-1 )&3 )<<27 ) ;
mac = &smc->hw.fp.mac_sfb ;
mac->mac_fc = FC_CLAIM ;
/* DA == SA in claim frame */
mac->mac_source = mac->mac_dest = MA ;
/* 2's complement */
set_int((char *)mac->mac_info,(int )t_request) ;
copy_tx_mac(smc,td,(struct fddi_mac *)mac,
smc->hw.fp.fifo.rbc_ram_start + CLAIM_FRAME_OFF,len) ;
/* set CLAIM start pointer */
outpw(FM_A(FM_SACL),smc->hw.fp.fifo.rbc_ram_start + CLAIM_FRAME_OFF) ;
/*
* build beacon packet
*/
len = 17 ;
td = TX_DESCRIPTOR | ((((u_int)len-1 )&3 )<<27 ) ;
mac->mac_fc = FC_BEACON ;
mac->mac_source = MA ;
mac->mac_dest = null_addr ; /* DA == 0 in beacon frame */
set_int((char *) mac->mac_info,((int )BEACON_INFO<<24 ) + 0 ) ;
copy_tx_mac(smc,td,(struct fddi_mac *)mac,
smc->hw.fp.fifo.rbc_ram_start + BEACON_FRAME_OFF,len) ;
/* set beacon start pointer */
outpw(FM_A(FM_SABC),smc->hw.fp.fifo.rbc_ram_start + BEACON_FRAME_OFF) ;
/*
* build directed beacon packet
* contains optional UNA
*/
len = 23 ;
td = TX_DESCRIPTOR | ((((u_int)len-1 )&3 )<<27 ) ;
mac->mac_fc = FC_BEACON ;
mac->mac_source = MA ;
mac->mac_dest = dbeacon_multi ; /* multicast */
set_int((char *) mac->mac_info,((int )DBEACON_INFO<<24 ) + 0 ) ;
set_int((char *) mac->mac_info+4 ,0 ) ;
set_int((char *) mac->mac_info+8 ,0 ) ;
copy_tx_mac(smc,td,(struct fddi_mac *)mac,
smc->hw.fp.fifo.rbc_ram_start + DBEACON_FRAME_OFF,len) ;
/* end of claim/beacon queue */
outpw(FM_A(FM_EACB),smc->hw.fp.fifo.rx1_fifo_start-1 ) ;
outpw(FM_A(FM_WPXSF),0 ) ;
outpw(FM_A(FM_RPXSF),0 ) ;
}
static void formac_rcv_restart(struct s_smc *smc)
{
/* enable receive function */
SETMASK(FM_A(FM_MDREG1),smc->hw.fp.rx_mode,FM_ADDRX) ;
outpw(FM_A(FM_CMDREG1),FM_ICLLR) ; /* clear receive lock */
}
void formac_tx_restart(struct s_smc *smc)
{
outpw(FM_A(FM_CMDREG1),FM_ICLLS) ; /* clear s-frame lock */
outpw(FM_A(FM_CMDREG1),FM_ICLLA0) ; /* clear a-frame lock */
}
static void enable_formac(struct s_smc *smc)
{
/* set formac IMSK : 0 enables irq */
outpw(FM_A(FM_IMSK1U),(unsigned short )~mac_imsk1u);
outpw(FM_A(FM_IMSK1L),(unsigned short )~mac_imsk1l);
outpw(FM_A(FM_IMSK2U),(unsigned short )~mac_imsk2u);
outpw(FM_A(FM_IMSK2L),(unsigned short )~mac_imsk2l);
outpw(FM_A(FM_IMSK3U),(unsigned short )~mac_imsk3u);
outpw(FM_A(FM_IMSK3L),(unsigned short )~mac_imsk3l);
}
#if 0 /* Removed because the driver should use the ASICs TX complete IRQ. */
/* The FORMACs tx complete IRQ should be used any longer */
/*
BEGIN_MANUAL_ENTRY ( if , func ; others ; 4 )
void enable_tx_irq ( smc , queue )
struct s_smc * smc ;
u_short queue ;
Function DOWNCALL ( SMT , fplustm . c )
enable_tx_irq ( ) enables the FORMACs transmit complete
interrupt of the queue .
Para queue = QUEUE_S : synchronous queue
= QUEUE_A0 : asynchronous queue
Note After any ring operational change the transmit complete
interrupts are disabled .
The operating system dependent module must enable
the transmit complete interrupt of a queue ,
- when it queues the first frame ,
because of no transmit resources are beeing
available and
- when it escapes from the function llc_restart_tx
while some frames are still queued .
END_MANUAL_ENTRY
*/
void enable_tx_irq(struct s_smc *smc, u_short queue)
/* u_short queue; 0 = synchronous queue, 1 = asynchronous queue 0 */
{
u_short imask ;
imask = ~(inpw(FM_A(FM_IMSK1U))) ;
if (queue == 0 ) {
outpw(FM_A(FM_IMSK1U),~(imask|FM_STEFRMS)) ;
}
if (queue == 1 ) {
outpw(FM_A(FM_IMSK1U),~(imask|FM_STEFRMA0)) ;
}
}
/*
BEGIN_MANUAL_ENTRY ( if , func ; others ; 4 )
void disable_tx_irq ( smc , queue )
struct s_smc * smc ;
u_short queue ;
Function DOWNCALL ( SMT , fplustm . c )
disable_tx_irq disables the FORMACs transmit complete
interrupt of the queue
Para queue = QUEUE_S : synchronous queue
= QUEUE_A0 : asynchronous queue
Note The operating system dependent module should disable
the transmit complete interrupts if it escapes from the
function llc_restart_tx and no frames are queued .
END_MANUAL_ENTRY
*/
void disable_tx_irq(struct s_smc *smc, u_short queue)
/* u_short queue; 0 = synchronous queue, 1 = asynchronous queue 0 */
{
u_short imask ;
imask = ~(inpw(FM_A(FM_IMSK1U))) ;
if (queue == 0 ) {
outpw(FM_A(FM_IMSK1U),~(imask&~FM_STEFRMS)) ;
}
if (queue == 1 ) {
outpw(FM_A(FM_IMSK1U),~(imask&~FM_STEFRMA0)) ;
}
}
#endif
static void disable_formac(struct s_smc *smc)
{
/* clear formac IMSK : 1 disables irq */
outpw(FM_A(FM_IMSK1U),MW) ;
outpw(FM_A(FM_IMSK1L),MW) ;
outpw(FM_A(FM_IMSK2U),MW) ;
outpw(FM_A(FM_IMSK2L),MW) ;
outpw(FM_A(FM_IMSK3U),MW) ;
outpw(FM_A(FM_IMSK3L),MW) ;
}
static void mac_ring_up(struct s_smc *smc, int up)
{
if (up) {
formac_rcv_restart(smc) ; /* enable receive function */
smc->hw.mac_ring_is_up = TRUE ;
llc_restart_tx(smc) ; /* TX queue */
}
else {
/* disable receive function */
SETMASK(FM_A(FM_MDREG1),FM_MDISRCV,FM_ADDET) ;
/* abort current transmit activity */
outpw(FM_A(FM_CMDREG2),FM_IACTR) ;
smc->hw.mac_ring_is_up = FALSE ;
}
}
/*--------------------------- ISR handling ----------------------------------*/
/*
* mac1_irq is in drvfbi . c
*/
/*
* mac2_irq : status bits for the receive queue 1 , and ring status
* ring status indication bits
*/
void mac2_irq(struct s_smc *smc, u_short code_s2u, u_short code_s2l)
{
u_short change_s2l ;
u_short change_s2u ;
/* (jd) 22-Feb-1999
* Restart 2 _ DMax Timer after end of claiming or beaconing
*/
if (code_s2u & (FM_SCLM|FM_SHICLM|FM_SBEC|FM_SOTRBEC)) {
queue_event(smc,EVENT_RMT,RM_TX_STATE_CHANGE) ;
}
else if (code_s2l & (FM_STKISS)) {
queue_event(smc,EVENT_RMT,RM_TX_STATE_CHANGE) ;
}
/*
* XOR current st bits with the last to avoid useless RMT event queuing
*/
change_s2l = smc->hw.fp.s2l ^ code_s2l ;
change_s2u = smc->hw.fp.s2u ^ code_s2u ;
if ((change_s2l & FM_SRNGOP) ||
(!smc->hw.mac_ring_is_up && ((code_s2l & FM_SRNGOP)))) {
if (code_s2l & FM_SRNGOP) {
mac_ring_up(smc,1 ) ;
queue_event(smc,EVENT_RMT,RM_RING_OP) ;
smc->mib.m[MAC0].fddiMACRingOp_Ct++ ;
}
else {
mac_ring_up(smc,0 ) ;
queue_event(smc,EVENT_RMT,RM_RING_NON_OP) ;
}
goto mac2_end ;
}
if (code_s2l & FM_SMISFRM) { /* missed frame */
smc->mib.m[MAC0].fddiMACNotCopied_Ct++ ;
}
if (code_s2u & (FM_SRCVOVR | /* recv. FIFO overflow */
FM_SRBFL)) { /* recv. buffer full */
smc->hw.mac_ct.mac_r_restart_counter++ ;
/* formac_rcv_restart(smc) ; */
smt_stat_counter(smc,1 ) ;
/* goto mac2_end ; */
}
if (code_s2u & FM_SOTRBEC)
queue_event(smc,EVENT_RMT,RM_OTHER_BEACON) ;
if (code_s2u & FM_SMYBEC)
queue_event(smc,EVENT_RMT,RM_MY_BEACON) ;
if (change_s2u & code_s2u & FM_SLOCLM) {
DB_RMTN(2 , "RMT : lower claim received" );
}
if ((code_s2u & FM_SMYCLM) && !(code_s2l & FM_SDUPCLM)) {
/*
* This is my claim and that claim is not detected as a
* duplicate one .
*/
queue_event(smc,EVENT_RMT,RM_MY_CLAIM) ;
}
if (code_s2l & FM_SDUPCLM) {
/*
* If a duplicate claim frame ( same SA but T_Bid ! = T_Req )
* this flag will be set .
* In the RMT state machine we need a RM_VALID_CLAIM event
* to do the appropriate state change .
* RM ( 34 c )
*/
queue_event(smc,EVENT_RMT,RM_VALID_CLAIM) ;
}
if (change_s2u & code_s2u & FM_SHICLM) {
DB_RMTN(2 , "RMT : higher claim received" );
}
if ( (code_s2l & FM_STRTEXP) ||
(code_s2l & FM_STRTEXR) )
queue_event(smc,EVENT_RMT,RM_TRT_EXP) ;
if (code_s2l & FM_SMULTDA) {
/*
* The MAC has found a 2 . MAC with the same address .
* Signal dup_addr_test = failed to RMT state machine .
* RM ( 25 )
*/
smc->r.dup_addr_test = DA_FAILED ;
queue_event(smc,EVENT_RMT,RM_DUP_ADDR) ;
}
if (code_s2u & FM_SBEC)
smc->hw.fp.err_stats.err_bec_stat++ ;
if (code_s2u & FM_SCLM)
smc->hw.fp.err_stats.err_clm_stat++ ;
if (code_s2l & FM_STVXEXP)
smc->mib.m[MAC0].fddiMACTvxExpired_Ct++ ;
if ((code_s2u & (FM_SBEC|FM_SCLM))) {
if (!(change_s2l & FM_SRNGOP) && (smc->hw.fp.s2l & FM_SRNGOP)) {
mac_ring_up(smc,0 ) ;
queue_event(smc,EVENT_RMT,RM_RING_NON_OP) ;
mac_ring_up(smc,1 ) ;
queue_event(smc,EVENT_RMT,RM_RING_OP) ;
smc->mib.m[MAC0].fddiMACRingOp_Ct++ ;
}
}
if (code_s2l & FM_SPHINV)
smc->hw.fp.err_stats.err_phinv++ ;
if (code_s2l & FM_SSIFG)
smc->hw.fp.err_stats.err_sifg_det++ ;
if (code_s2l & FM_STKISS)
smc->hw.fp.err_stats.err_tkiss++ ;
if (code_s2l & FM_STKERR)
smc->hw.fp.err_stats.err_tkerr++ ;
if (code_s2l & FM_SFRMCTR)
smc->mib.m[MAC0].fddiMACFrame_Ct += 0 x10000L ;
if (code_s2l & FM_SERRCTR)
smc->mib.m[MAC0].fddiMACError_Ct += 0 x10000L ;
if (code_s2l & FM_SLSTCTR)
smc->mib.m[MAC0].fddiMACLost_Ct += 0 x10000L ;
if (code_s2u & FM_SERRSF) {
SMT_PANIC(smc,SMT_E0114, SMT_E0114_MSG) ;
}
mac2_end:
/* notice old status */
smc->hw.fp.s2l = code_s2l ;
smc->hw.fp.s2u = code_s2u ;
outpw(FM_A(FM_IMSK2U),~mac_imsk2u) ;
}
/*
* mac3_irq : receive queue 2 bits and address detection bits
*/
void mac3_irq(struct s_smc *smc, u_short code_s3u, u_short code_s3l)
{
UNUSED(code_s3l) ;
if (code_s3u & (FM_SRCVOVR2 | /* recv. FIFO overflow */
FM_SRBFL2)) { /* recv. buffer full */
smc->hw.mac_ct.mac_r_restart_counter++ ;
smt_stat_counter(smc,1 );
}
if (code_s3u & FM_SRPERRQ2) { /* parity error receive queue 2 */
SMT_PANIC(smc,SMT_E0115, SMT_E0115_MSG) ;
}
if (code_s3u & FM_SRPERRQ1) { /* parity error receive queue 2 */
SMT_PANIC(smc,SMT_E0116, SMT_E0116_MSG) ;
}
}
/*
* take formac offline
*/
static void formac_offline(struct s_smc *smc)
{
outpw(FM_A(FM_CMDREG2),FM_IACTR) ;/* abort current transmit activity */
/* disable receive function */
SETMASK(FM_A(FM_MDREG1),FM_MDISRCV,FM_ADDET) ;
/* FORMAC+ 'Initialize Mode' */
SETMASK(FM_A(FM_MDREG1),FM_MINIT,FM_MMODE) ;
disable_formac(smc) ;
smc->hw.mac_ring_is_up = FALSE ;
smc->hw.hw_state = STOPPED ;
}
/*
* bring formac online
*/
static void formac_online(struct s_smc *smc)
{
enable_formac(smc) ;
SETMASK(FM_A(FM_MDREG1),FM_MONLINE | FM_SELRA | MDR1INIT |
smc->hw.fp.rx_mode, FM_MMODE | FM_SELRA | FM_ADDRX) ;
}
/*
* FORMAC + full init . ( tx , rx , timer , counter , claim & beacon )
*/
int init_fplus(struct s_smc *smc)
{
smc->hw.fp.nsa_mode = FM_MRNNSAFNMA ;
smc->hw.fp.rx_mode = FM_MDAMA ;
smc->hw.fp.group_addr = fddi_broadcast ;
smc->hw.fp.func_addr = 0 ;
smc->hw.fp.frselreg_init = 0 ;
init_driver_fplus(smc) ;
if (smc->s.sas == SMT_DAS)
smc->hw.fp.mdr3init |= FM_MENDAS ;
smc->hw.mac_ct.mac_nobuf_counter = 0 ;
smc->hw.mac_ct.mac_r_restart_counter = 0 ;
smc->hw.fp.fm_st1u = (HW_PTR) ADDR(B0_ST1U) ;
smc->hw.fp.fm_st1l = (HW_PTR) ADDR(B0_ST1L) ;
smc->hw.fp.fm_st2u = (HW_PTR) ADDR(B0_ST2U) ;
smc->hw.fp.fm_st2l = (HW_PTR) ADDR(B0_ST2L) ;
smc->hw.fp.fm_st3u = (HW_PTR) ADDR(B0_ST3U) ;
smc->hw.fp.fm_st3l = (HW_PTR) ADDR(B0_ST3L) ;
smc->hw.fp.s2l = smc->hw.fp.s2u = 0 ;
smc->hw.mac_ring_is_up = 0 ;
mac_counter_init(smc) ;
/* convert BCKL units to symbol time */
smc->hw.mac_pa.t_neg = (u_long)0 ;
smc->hw.mac_pa.t_pri = (u_long)0 ;
/* make sure all PCI settings are correct */
mac_do_pci_fix(smc) ;
return init_mac(smc, 1 );
/* enable_formac(smc) ; */
}
static int init_mac(struct s_smc *smc, int all)
{
u_short t_max,x ;
u_long time=0 ;
/*
* clear memory
*/
outpw(FM_A(FM_MDREG1),FM_MINIT) ; /* FORMAC+ init mode */
set_formac_addr(smc) ;
outpw(FM_A(FM_MDREG1),FM_MMEMACT) ; /* FORMAC+ memory activ mode */
/* Note: Mode register 2 is set here, incase parity is enabled. */
outpw(FM_A(FM_MDREG2),smc->hw.fp.mdr2init) ;
if (all) {
init_ram(smc) ;
}
else {
/*
* reset the HPI , the Master and the BMUs
*/
outp(ADDR(B0_CTRL), CTRL_HPI_SET) ;
time = hwt_quick_read(smc) ;
}
/*
* set all pointers , frames etc
*/
smt_split_up_fifo(smc) ;
init_tx(smc) ;
init_rx(smc) ;
init_rbc(smc) ;
build_claim_beacon(smc,smc->mib.m[MAC0].fddiMACT_Req) ;
/* set RX threshold */
/* see Errata #SN2 Phantom receive overflow */
outpw(FM_A(FM_FRMTHR),14 <<12 ) ; /* switch on */
/* set formac work mode */
outpw(FM_A(FM_MDREG1),MDR1INIT | FM_SELRA | smc->hw.fp.rx_mode) ;
outpw(FM_A(FM_MDREG2),smc->hw.fp.mdr2init) ;
outpw(FM_A(FM_MDREG3),smc->hw.fp.mdr3init) ;
outpw(FM_A(FM_FRSELREG),smc->hw.fp.frselreg_init) ;
/* set timer */
/*
* errata # 22 fplus :
* T_MAX must not be FFFE
* or one of FFDF , FFB8 , FF91 ( - 0 x27 etc . . )
*/
t_max = (u_short)(smc->mib.m[MAC0].fddiMACT_Max/32 ) ;
x = t_max/0 x27 ;
x *= 0 x27 ;
if ((t_max == 0 xfffe) || (t_max - x == 0 x16))
t_max-- ;
outpw(FM_A(FM_TMAX),(u_short)t_max) ;
/* BugFix for report #10204 */
if (smc->mib.m[MAC0].fddiMACTvxValue < (u_long) (- US2BCLK(52 ))) {
outpw(FM_A(FM_TVX), (u_short) (- US2BCLK(52 ))/255 & MB) ;
} else {
outpw(FM_A(FM_TVX),
(u_short)((smc->mib.m[MAC0].fddiMACTvxValue/255 ) & MB)) ;
}
outpw(FM_A(FM_CMDREG1),FM_ICLLS) ; /* clear s-frame lock */
outpw(FM_A(FM_CMDREG1),FM_ICLLA0) ; /* clear a-frame lock */
outpw(FM_A(FM_CMDREG1),FM_ICLLR); /* clear receive lock */
/* Auto unlock receice threshold for receive queue 1 and 2 */
outpw(FM_A(FM_UNLCKDLY),(0 xff|(0 xff<<8 ))) ;
rtm_init(smc) ; /* RT-Monitor */
if (!all) {
/*
* after 10 ms , reset the BMUs and repair the rings
*/
hwt_wait_time(smc,time,MS2BCLK(10 )) ;
outpd(ADDR(B0_R1_CSR),CSR_SET_RESET) ;
outpd(ADDR(B0_XA_CSR),CSR_SET_RESET) ;
outpd(ADDR(B0_XS_CSR),CSR_SET_RESET) ;
outp(ADDR(B0_CTRL), CTRL_HPI_CLR) ;
outpd(ADDR(B0_R1_CSR),CSR_CLR_RESET) ;
outpd(ADDR(B0_XA_CSR),CSR_CLR_RESET) ;
outpd(ADDR(B0_XS_CSR),CSR_CLR_RESET) ;
if (!smc->hw.hw_is_64bit) {
outpd(ADDR(B4_R1_F), RX_WATERMARK) ;
outpd(ADDR(B5_XA_F), TX_WATERMARK) ;
outpd(ADDR(B5_XS_F), TX_WATERMARK) ;
}
smc->hw.hw_state = STOPPED ;
mac_drv_repair_descr(smc) ;
}
smc->hw.hw_state = STARTED ;
return 0 ;
}
/*
* called by CFM
*/
void config_mux(struct s_smc *smc, int mux)
{
plc_config_mux(smc,mux) ;
SETMASK(FM_A(FM_MDREG1),FM_SELRA,FM_SELRA) ;
}
/*
* called by RMT
* enable CLAIM / BEACON interrupts
* ( only called if these events are of interest , e . g . in DETECT state
* the interrupt must not be permanently enabled
* RMT calls this function periodically ( timer driven polling )
*/
void sm_mac_check_beacon_claim(struct s_smc *smc)
{
/* set formac IMSK : 0 enables irq */
outpw(FM_A(FM_IMSK2U),~(mac_imsk2u | mac_beacon_imsk2u)) ;
/* the driver must receive the directed beacons */
formac_rcv_restart(smc) ;
process_receive(smc) ;
}
/*-------------------------- interface functions ----------------------------*/
/*
* control MAC layer ( called by RMT )
*/
void sm_ma_control(struct s_smc *smc, int mode)
{
switch (mode) {
case MA_OFFLINE :
/* Add to make the MAC offline in RM0_ISOLATED state */
formac_offline(smc) ;
break ;
case MA_RESET :
(void )init_mac(smc,0 ) ;
break ;
case MA_BEACON :
formac_online(smc) ;
break ;
case MA_DIRECTED :
directed_beacon(smc) ;
break ;
case MA_TREQ :
/*
* no actions necessary , TREQ is already set
*/
break ;
}
}
int sm_mac_get_tx_state(struct s_smc *smc)
{
return (inpw(FM_A(FM_STMCHN))>>4 ) & 7 ;
}
/*
* multicast functions
*/
static struct s_fpmc* mac_get_mc_table(struct s_smc *smc,
struct fddi_addr *user,
struct fddi_addr *own,
int del, int can)
{
struct s_fpmc *tb ;
struct s_fpmc *slot ;
u_char *p ;
int i ;
/*
* set own = can ( user )
*/
*own = *user ;
if (can) {
p = own->a ;
for (i = 0 ; i < 6 ; i++, p++)
*p = bitrev8(*p);
}
slot = NULL;
for (i = 0 , tb = smc->hw.fp.mc.table ; i < FPMAX_MULTICAST ; i++, tb++){
if (!tb->n) { /* not used */
if (!del && !slot) /* if !del save first free */
slot = tb ;
continue ;
}
if (!ether_addr_equal((char *)&tb->a, (char *)own))
continue ;
return tb;
}
return slot; /* return first free or NULL */
}
/*
BEGIN_MANUAL_ENTRY ( if , func ; others ; 2 )
void mac_clear_multicast ( smc )
struct s_smc * smc ;
Function DOWNCALL ( SMT , fplustm . c )
Clear all multicast entries
END_MANUAL_ENTRY ( )
*/
void mac_clear_multicast(struct s_smc *smc)
{
struct s_fpmc *tb ;
int i ;
smc->hw.fp.os_slots_used = 0 ; /* note the SMT addresses */
/* will not be deleted */
for (i = 0 , tb = smc->hw.fp.mc.table ; i < FPMAX_MULTICAST ; i++, tb++){
if (!tb->perm) {
tb->n = 0 ;
}
}
}
/*
BEGIN_MANUAL_ENTRY ( if , func ; others ; 2 )
int mac_add_multicast ( smc , addr , can )
struct s_smc * smc ;
struct fddi_addr * addr ;
int can ;
Function DOWNCALL ( SMC , fplustm . c )
Add an entry to the multicast table
Para addr pointer to a multicast address
can = 0 : the multicast address has the physical format
= 1 : the multicast address has the canonical format
| 0 x80 permanent
Returns 0 : success
1 : address table full
Note After a ' driver reset ' or a ' station set address ' all
entries of the multicast table are cleared .
In this case the driver has to fill the multicast table again .
After the operating system dependent module filled
the multicast table it must call mac_update_multicast
to activate the new multicast addresses !
END_MANUAL_ENTRY ( )
*/
int mac_add_multicast(struct s_smc *smc, struct fddi_addr *addr, int can)
{
SK_LOC_DECL(struct fddi_addr,own) ;
struct s_fpmc *tb ;
/*
* check if there are free table entries
*/
if (can & 0 x80) {
if (smc->hw.fp.smt_slots_used >= SMT_MAX_MULTI) {
return 1 ;
}
}
else {
if (smc->hw.fp.os_slots_used >= FPMAX_MULTICAST-SMT_MAX_MULTI) {
return 1 ;
}
}
/*
* find empty slot
*/
if (!(tb = mac_get_mc_table(smc,addr,&own,0 ,can & ~0 x80)))
return 1 ;
tb->n++ ;
tb->a = own ;
tb->perm = (can & 0 x80) ? 1 : 0 ;
if (can & 0 x80)
smc->hw.fp.smt_slots_used++ ;
else
smc->hw.fp.os_slots_used++ ;
return 0 ;
}
/*
* mode
*/
#define RX_MODE_PROM 0 x1
#define RX_MODE_ALL_MULTI 0 x2
/*
BEGIN_MANUAL_ENTRY ( if , func ; others ; 2 )
void mac_update_multicast ( smc )
struct s_smc * smc ;
Function DOWNCALL ( SMT , fplustm . c )
Update FORMAC multicast registers
END_MANUAL_ENTRY ( )
*/
void mac_update_multicast(struct s_smc *smc)
{
struct s_fpmc *tb ;
u_char *fu ;
int i ;
/*
* invalidate the CAM
*/
outpw(FM_A(FM_AFCMD),FM_IINV_CAM) ;
/*
* set the functional address
*/
if (smc->hw.fp.func_addr) {
fu = (u_char *) &smc->hw.fp.func_addr ;
outpw(FM_A(FM_AFMASK2),0 xffff) ;
outpw(FM_A(FM_AFMASK1),(u_short) ~((fu[0 ] << 8 ) + fu[1 ])) ;
outpw(FM_A(FM_AFMASK0),(u_short) ~((fu[2 ] << 8 ) + fu[3 ])) ;
outpw(FM_A(FM_AFPERS),FM_VALID|FM_DA) ;
outpw(FM_A(FM_AFCOMP2), 0 xc000) ;
outpw(FM_A(FM_AFCOMP1), 0 x0000) ;
outpw(FM_A(FM_AFCOMP0), 0 x0000) ;
outpw(FM_A(FM_AFCMD),FM_IWRITE_CAM) ;
}
/*
* set the mask and the personality register ( s )
*/
outpw(FM_A(FM_AFMASK0),0 xffff) ;
outpw(FM_A(FM_AFMASK1),0 xffff) ;
outpw(FM_A(FM_AFMASK2),0 xffff) ;
outpw(FM_A(FM_AFPERS),FM_VALID|FM_DA) ;
for (i = 0 , tb = smc->hw.fp.mc.table; i < FPMAX_MULTICAST; i++, tb++) {
if (tb->n) {
CHECK_CAM() ;
/*
* write the multicast address into the CAM
*/
outpw(FM_A(FM_AFCOMP2),
(u_short)((tb->a.a[0 ]<<8 )+tb->a.a[1 ])) ;
outpw(FM_A(FM_AFCOMP1),
(u_short)((tb->a.a[2 ]<<8 )+tb->a.a[3 ])) ;
outpw(FM_A(FM_AFCOMP0),
(u_short)((tb->a.a[4 ]<<8 )+tb->a.a[5 ])) ;
outpw(FM_A(FM_AFCMD),FM_IWRITE_CAM) ;
}
}
}
/*
BEGIN_MANUAL_ENTRY ( if , func ; others ; 3 )
void mac_set_rx_mode ( smc , mode )
struct s_smc * smc ;
int mode ;
Function DOWNCALL / INTERN ( SMT , fplustm . c )
This function enables / disables the selected receive .
Don ' t call this function if the hardware module is
used - - use mac_drv_rx_mode ( ) instead of .
Para mode = 1 RX_ENABLE_ALLMULTI enable all multicasts
2 RX_DISABLE_ALLMULTI disable " enable all multicasts "
3 RX_ENABLE_PROMISC enable promiscuous
4 RX_DISABLE_PROMISC disable promiscuous
5 RX_ENABLE_NSA enable reception of NSA frames
6 RX_DISABLE_NSA disable reception of NSA frames
Note The selected receive modes will be lost after ' driver reset '
or ' set station address '
END_MANUAL_ENTRY
*/
void mac_set_rx_mode(struct s_smc *smc, int mode)
{
switch (mode) {
case RX_ENABLE_ALLMULTI :
smc->hw.fp.rx_prom |= RX_MODE_ALL_MULTI ;
break ;
case RX_DISABLE_ALLMULTI :
smc->hw.fp.rx_prom &= ~RX_MODE_ALL_MULTI ;
break ;
case RX_ENABLE_PROMISC :
smc->hw.fp.rx_prom |= RX_MODE_PROM ;
break ;
case RX_DISABLE_PROMISC :
smc->hw.fp.rx_prom &= ~RX_MODE_PROM ;
break ;
case RX_ENABLE_NSA :
smc->hw.fp.nsa_mode = FM_MDAMA ;
smc->hw.fp.rx_mode = (smc->hw.fp.rx_mode & ~FM_ADDET) |
smc->hw.fp.nsa_mode ;
break ;
case RX_DISABLE_NSA :
smc->hw.fp.nsa_mode = FM_MRNNSAFNMA ;
smc->hw.fp.rx_mode = (smc->hw.fp.rx_mode & ~FM_ADDET) |
smc->hw.fp.nsa_mode ;
break ;
}
if (smc->hw.fp.rx_prom & RX_MODE_PROM) {
smc->hw.fp.rx_mode = FM_MLIMPROM ;
}
else if (smc->hw.fp.rx_prom & RX_MODE_ALL_MULTI) {
smc->hw.fp.rx_mode = smc->hw.fp.nsa_mode | FM_EXGPA0 ;
}
else
smc->hw.fp.rx_mode = smc->hw.fp.nsa_mode ;
SETMASK(FM_A(FM_MDREG1),smc->hw.fp.rx_mode,FM_ADDRX) ;
mac_update_multicast(smc) ;
}
/*
BEGIN_MANUAL_ENTRY ( module ; tests ; 3 )
How to test the Restricted Token Monitor
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
o Insert a break point in the function rtm_irq ( )
o Remove all stations with a restricted token monitor from the
network .
o Connect a UPPS ISA or EISA station to the network .
o Give the FORMAC of UPPS station the command to send
restricted tokens until the ring becomes instable .
o Now connect your test client .
o The restricted token monitor should detect the restricted token ,
and your break point will be reached .
o You can ovserve how the station will clean the ring .
END_MANUAL_ENTRY
*/
void rtm_irq(struct s_smc *smc)
{
outpw(ADDR(B2_RTM_CRTL),TIM_CL_IRQ) ; /* clear IRQ */
if (inpw(ADDR(B2_RTM_CRTL)) & TIM_RES_TOK) {
outpw(FM_A(FM_CMDREG1),FM_ICL) ; /* force claim */
DB_RMT("RMT: fddiPATHT_Rmode expired" );
AIX_EVENT(smc, (u_long) FDDI_RING_STATUS,
(u_long) FDDI_SMT_EVENT,
(u_long) FDDI_RTT, smt_get_event_word(smc));
}
outpw(ADDR(B2_RTM_CRTL),TIM_START) ; /* enable RTM monitoring */
}
static void rtm_init(struct s_smc *smc)
{
outpd(ADDR(B2_RTM_INI),0 ) ; /* timer = 0 */
outpw(ADDR(B2_RTM_CRTL),TIM_START) ; /* enable IRQ */
}
void rtm_set_timer(struct s_smc *smc)
{
/*
* MIB timer and hardware timer have the same resolution of 80 nS
*/
DB_RMT("RMT: setting new fddiPATHT_Rmode, t = %d ns" ,
(int )smc->mib.a[PATH0].fddiPATHT_Rmode);
outpd(ADDR(B2_RTM_INI),smc->mib.a[PATH0].fddiPATHT_Rmode) ;
}
static void smt_split_up_fifo(struct s_smc *smc)
{
/*
BEGIN_MANUAL_ENTRY ( module ; mem ; 1 )
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
RECEIVE BUFFER MEMORY DIVERSION
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
R1_RxD = = SMT_R1_RXD_COUNT
R2_RxD = = SMT_R2_RXD_COUNT
SMT_R1_RXD_COUNT must be unequal zero
| R1_RxD R2_RxD | R1_RxD R2_RxD | R1_RxD R2_RxD
| x 0 | x 1 - 3 | x < 3
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 63 , 75 kB | 54 , 75 | R1_RxD
rx queue 1 | RX_FIFO_SPACE | RX_LARGE_FIFO | - - - - - - - - - - - - - * 63 , 75 kB
| | | R1_RxD + R2_RxD
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| | 9 kB | R2_RxD
rx queue 2 | 0 kB | RX_SMALL_FIFO | - - - - - - - - - - - - - * 63 , 75 kB
| ( not used ) | | R1_RxD + R2_RxD
END_MANUAL_ENTRY
*/
if (SMT_R1_RXD_COUNT == 0 ) {
SMT_PANIC(smc,SMT_E0117, SMT_E0117_MSG) ;
}
switch (SMT_R2_RXD_COUNT) {
case 0 :
smc->hw.fp.fifo.rx1_fifo_size = RX_FIFO_SPACE ;
smc->hw.fp.fifo.rx2_fifo_size = 0 ;
break ;
case 1 :
case 2 :
case 3 :
smc->hw.fp.fifo.rx1_fifo_size = RX_LARGE_FIFO ;
smc->hw.fp.fifo.rx2_fifo_size = RX_SMALL_FIFO ;
break ;
default : /* this is not the real defaule */
smc->hw.fp.fifo.rx1_fifo_size = RX_FIFO_SPACE *
SMT_R1_RXD_COUNT/(SMT_R1_RXD_COUNT+SMT_R2_RXD_COUNT) ;
smc->hw.fp.fifo.rx2_fifo_size = RX_FIFO_SPACE *
SMT_R2_RXD_COUNT/(SMT_R1_RXD_COUNT+SMT_R2_RXD_COUNT) ;
break ;
}
/*
BEGIN_MANUAL_ENTRY ( module ; mem ; 1 )
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
TRANSMIT BUFFER MEMORY DIVERSION
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| no sync bw | sync bw available and | sync bw available and
| available | SynchTxMode = SPLIT | SynchTxMode = ALL
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
sync tx | 0 kB | 32 kB | 55 kB
queue | | TX_MEDIUM_FIFO | TX_LARGE_FIFO
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
async tx | 64 kB | 32 kB | 9 k
queue | TX_FIFO_SPACE | TX_MEDIUM_FIFO | TX_SMALL_FIFO
END_MANUAL_ENTRY
*/
/*
* set the tx mode bits
*/
if (smc->mib.a[PATH0].fddiPATHSbaPayload) {
#ifdef ESS
smc->hw.fp.fifo.fifo_config_mode |=
smc->mib.fddiESSSynchTxMode | SYNC_TRAFFIC_ON ;
#endif
}
else {
smc->hw.fp.fifo.fifo_config_mode &=
~(SEND_ASYNC_AS_SYNC|SYNC_TRAFFIC_ON) ;
}
/*
* split up the FIFO
*/
if (smc->hw.fp.fifo.fifo_config_mode & SYNC_TRAFFIC_ON) {
if (smc->hw.fp.fifo.fifo_config_mode & SEND_ASYNC_AS_SYNC) {
smc->hw.fp.fifo.tx_s_size = TX_LARGE_FIFO ;
smc->hw.fp.fifo.tx_a0_size = TX_SMALL_FIFO ;
}
else {
smc->hw.fp.fifo.tx_s_size = TX_MEDIUM_FIFO ;
smc->hw.fp.fifo.tx_a0_size = TX_MEDIUM_FIFO ;
}
}
else {
smc->hw.fp.fifo.tx_s_size = 0 ;
smc->hw.fp.fifo.tx_a0_size = TX_FIFO_SPACE ;
}
smc->hw.fp.fifo.rx1_fifo_start = smc->hw.fp.fifo.rbc_ram_start +
RX_FIFO_OFF ;
smc->hw.fp.fifo.tx_s_start = smc->hw.fp.fifo.rx1_fifo_start +
smc->hw.fp.fifo.rx1_fifo_size ;
smc->hw.fp.fifo.tx_a0_start = smc->hw.fp.fifo.tx_s_start +
smc->hw.fp.fifo.tx_s_size ;
smc->hw.fp.fifo.rx2_fifo_start = smc->hw.fp.fifo.tx_a0_start +
smc->hw.fp.fifo.tx_a0_size ;
DB_SMT("FIFO split: mode = %x" , smc->hw.fp.fifo.fifo_config_mode);
DB_SMT("rbc_ram_start = %x rbc_ram_end = %x" ,
smc->hw.fp.fifo.rbc_ram_start, smc->hw.fp.fifo.rbc_ram_end);
DB_SMT("rx1_fifo_start = %x tx_s_start = %x" ,
smc->hw.fp.fifo.rx1_fifo_start, smc->hw.fp.fifo.tx_s_start);
DB_SMT("tx_a0_start = %x rx2_fifo_start = %x" ,
smc->hw.fp.fifo.tx_a0_start, smc->hw.fp.fifo.rx2_fifo_start);
}
void formac_reinit_tx(struct s_smc *smc)
{
/*
* Split up the FIFO and reinitialize the MAC if synchronous
* bandwidth becomes available but no synchronous queue is
* configured .
*/
if (!smc->hw.fp.fifo.tx_s_size && smc->mib.a[PATH0].fddiPATHSbaPayload){
(void )init_mac(smc,0 ) ;
}
}
Messung V0.5 in Prozent C=89 H=96 G=92
¤ Dauer der Verarbeitung: 0.22 Sekunden
(vorverarbeitet am 2026-09-29)
¤
*© Formatika GbR, Deutschland
2026-10-10
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