Quelle iphase.c
Sprache: C
/******************************************************************************
iphase . c : Device driver for Interphase ATM PCI adapter cards
Author : Peter Wang < pwang @ iphase . com >
Some fixes : Arnaldo Carvalho de Melo < acme @ conectiva . com . br >
Interphase Corporation < www . iphase . com >
Version : 1 . 0
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
This software may be used and distributed according to the terms
of the GNU General Public License ( GPL ) , incorporated herein by reference .
Drivers based on this skeleton fall under the GPL and must retain
the authorship ( implicit copyright ) notice .
This program is distributed in the hope that it will be useful , but
WITHOUT ANY WARRANTY ; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the GNU
General Public License for more details .
Modified from an incomplete driver for Interphase 5575 1 KVC 1 M card which
was originally written by Monalisa Agrawal at UNH . Now this driver
supports a variety of varients of Interphase ATM PCI ( i ) Chip adapter
card family ( See www . iphase . com / products / ClassSheet . cfm ? ClassID = ATM )
in terms of PHY type , the size of control memory and the size of
packet memory . The following are the change log and history :
Bugfix the Mona ' s UBR driver .
Modify the basic memory allocation and dma logic .
Port the driver to the latest kernel from 2 . 0 . 46 .
Complete the ABR logic of the driver , and added the ABR work -
around for the hardware anormalies .
Add the CBR support .
Add the flow control logic to the driver to allow rate - limit VC .
Add 4 K VC support to the board with 512 K control memory .
Add the support of all the variants of the Interphase ATM PCI
( i ) Chip adapter cards including x575 ( 155 M OC3 and UTP155 ) , x525
( 25 M UTP25 ) and x531 ( DS3 and E3 ) .
Add SMP support .
Support and updates available at : ftp : //ftp.iphase.com/pub/atm
*******************************************************************************/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/pci.h>
#include <linux/errno.h>
#include <linux/atm.h>
#include <linux/atmdev.h>
#include <linux/ctype.h>
#include <linux/sonet.h>
#include <linux/skbuff.h>
#include <linux/time.h>
#include <linux/delay.h>
#include <linux/uio.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/wait.h>
#include <linux/slab.h>
#include <asm /io.h>
#include <linux/atomic.h>
#include <linux/uaccess.h>
#include <asm /string.h>
#include <asm /byteorder.h>
#include <linux/vmalloc.h>
#include <linux/jiffies.h>
#include <linux/nospec.h>
#include "iphase.h"
#include "suni.h"
#define swap_byte_order(x) (((x & 0 xff) << 8 ) | ((x & 0 xff00) >> 8 ))
#define PRIV(dev) ((struct suni_priv *) dev->phy_data)
static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr);
static void desc_dbg(IADEV *iadev);
static IADEV *ia_dev[8 ];
static struct atm_dev *_ia_dev[8 ];
static int iadev_count;
static void ia_led_timer(struct timer_list *unused);
static DEFINE_TIMER(ia_timer, ia_led_timer);
static int IA_TX_BUF = DFL_TX_BUFFERS, IA_TX_BUF_SZ = DFL_TX_BUF_SZ;
static int IA_RX_BUF = DFL_RX_BUFFERS, IA_RX_BUF_SZ = DFL_RX_BUF_SZ;
static uint IADebugFlag = /* IF_IADBG_ERR | IF_IADBG_CBR| IF_IADBG_INIT_ADAPTER
|IF_IADBG_ABR | IF_IADBG_EVENT*/ 0 ;
module_param(IA_TX_BUF, int , 0 );
module_param(IA_TX_BUF_SZ, int , 0 );
module_param(IA_RX_BUF, int , 0 );
module_param(IA_RX_BUF_SZ, int , 0 );
module_param(IADebugFlag, uint, 0644 );
MODULE_DESCRIPTION("Driver for Interphase ATM PCI NICs" );
MODULE_LICENSE("GPL" );
/**************************** IA_LIB **********************************/
static void ia_init_rtn_q (IARTN_Q *que)
{
que->next = NULL;
que->tail = NULL;
}
static void ia_enque_head_rtn_q (IARTN_Q *que, IARTN_Q * data)
{
data->next = NULL;
if (que->next == NULL)
que->next = que->tail = data;
else {
data->next = que->next;
que->next = data;
}
return ;
}
static int ia_enque_rtn_q (IARTN_Q *que, struct desc_tbl_t data) {
IARTN_Q *entry = kmalloc(sizeof (*entry), GFP_ATOMIC);
if (!entry)
return -ENOMEM;
entry->data = data;
entry->next = NULL;
if (que->next == NULL)
que->next = que->tail = entry;
else {
que->tail->next = entry;
que->tail = que->tail->next;
}
return 1 ;
}
static IARTN_Q * ia_deque_rtn_q (IARTN_Q *que) {
IARTN_Q *tmpdata;
if (que->next == NULL)
return NULL;
tmpdata = que->next;
if ( que->next == que->tail)
que->next = que->tail = NULL;
else
que->next = que->next->next;
return tmpdata;
}
static void ia_hack_tcq(IADEV *dev) {
u_short desc1;
u_short tcq_wr;
struct ia_vcc *iavcc_r = NULL;
tcq_wr = readl(dev->seg_reg+TCQ_WR_PTR) & 0 xffff;
while (dev->host_tcq_wr != tcq_wr) {
desc1 = *(u_short *)(dev->seg_ram + dev->host_tcq_wr);
if (!desc1) ;
else if (!dev->desc_tbl[desc1 -1 ].timestamp) {
IF_ABR(printk(" Desc %d is reset at %ld\n" , desc1 -1 , jiffies);)
*(u_short *) (dev->seg_ram + dev->host_tcq_wr) = 0 ;
}
else if (dev->desc_tbl[desc1 -1 ].timestamp) {
if (!(iavcc_r = dev->desc_tbl[desc1 -1 ].iavcc)) {
printk("IA: Fatal err in get_desc\n" );
continue ;
}
iavcc_r->vc_desc_cnt--;
dev->desc_tbl[desc1 -1 ].timestamp = 0 ;
IF_EVENT(printk("ia_hack: return_q skb = 0x%p desc = %d\n" ,
dev->desc_tbl[desc1 -1 ].txskb, desc1);)
if (iavcc_r->pcr < dev->rate_limit) {
IA_SKB_STATE (dev->desc_tbl[desc1-1 ].txskb) |= IA_TX_DONE;
if (ia_enque_rtn_q(&dev->tx_return_q, dev->desc_tbl[desc1 -1 ]) < 0 )
printk("ia_hack_tcq: No memory available\n" );
}
dev->desc_tbl[desc1 -1 ].iavcc = NULL;
dev->desc_tbl[desc1 -1 ].txskb = NULL;
}
dev->host_tcq_wr += 2 ;
if (dev->host_tcq_wr > dev->ffL.tcq_ed)
dev->host_tcq_wr = dev->ffL.tcq_st;
}
} /* ia_hack_tcq */
static u16 get_desc (IADEV *dev, struct ia_vcc *iavcc) {
u_short desc_num, i;
struct ia_vcc *iavcc_r = NULL;
unsigned long delta;
static unsigned long timer = 0 ;
int ltimeout;
ia_hack_tcq (dev);
if ((time_after(jiffies,timer+50 )) || ((dev->ffL.tcq_rd==dev->host_tcq_wr))) {
timer = jiffies;
i=0 ;
while (i < dev->num_tx_desc) {
if (!dev->desc_tbl[i].timestamp) {
i++;
continue ;
}
ltimeout = dev->desc_tbl[i].iavcc->ltimeout;
delta = jiffies - dev->desc_tbl[i].timestamp;
if (delta >= ltimeout) {
IF_ABR(printk("RECOVER run!! desc_tbl %d = %d delta = %ld, time = %ld\n" , i,dev->desc_tbl[i].timestamp, delta, jiffies);)
if (dev->ffL.tcq_rd == dev->ffL.tcq_st)
dev->ffL.tcq_rd = dev->ffL.tcq_ed;
else
dev->ffL.tcq_rd -= 2 ;
*(u_short *)(dev->seg_ram + dev->ffL.tcq_rd) = i+1 ;
if (!dev->desc_tbl[i].txskb || !(iavcc_r = dev->desc_tbl[i].iavcc))
printk("Fatal err, desc table vcc or skb is NULL\n" );
else
iavcc_r->vc_desc_cnt--;
dev->desc_tbl[i].timestamp = 0 ;
dev->desc_tbl[i].iavcc = NULL;
dev->desc_tbl[i].txskb = NULL;
}
i++;
} /* while */
}
if (dev->ffL.tcq_rd == dev->host_tcq_wr)
return 0 xFFFF;
/* Get the next available descriptor number from TCQ */
desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
while (!desc_num || (dev->desc_tbl[desc_num -1 ]).timestamp) {
dev->ffL.tcq_rd += 2 ;
if (dev->ffL.tcq_rd > dev->ffL.tcq_ed)
dev->ffL.tcq_rd = dev->ffL.tcq_st;
if (dev->ffL.tcq_rd == dev->host_tcq_wr)
return 0 xFFFF;
desc_num = *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd);
}
/* get system time */
dev->desc_tbl[desc_num -1 ].timestamp = jiffies;
return desc_num;
}
static void clear_lockup (struct atm_vcc *vcc, IADEV *dev) {
u_char foundLockUp;
vcstatus_t *vcstatus;
u_short *shd_tbl;
u_short tempCellSlot, tempFract;
struct main_vc *abr_vc = (struct main_vc *)dev->MAIN_VC_TABLE_ADDR;
struct ext_vc *eabr_vc = (struct ext_vc *)dev->EXT_VC_TABLE_ADDR;
u_int i;
if (vcc->qos.txtp.traffic_class == ATM_ABR) {
vcstatus = (vcstatus_t *) &(dev->testTable[vcc->vci]->vc_status);
vcstatus->cnt++;
foundLockUp = 0 ;
if ( vcstatus->cnt == 0 x05 ) {
abr_vc += vcc->vci;
eabr_vc += vcc->vci;
if ( eabr_vc->last_desc ) {
if ( (abr_vc->status & 0 x07) == ABR_STATE /* 0x2 */ ) {
/* Wait for 10 Micro sec */
udelay(10 );
if ((eabr_vc->last_desc)&&((abr_vc->status & 0 x07)==ABR_STATE))
foundLockUp = 1 ;
}
else {
tempCellSlot = abr_vc->last_cell_slot;
tempFract = abr_vc->fraction;
if ((tempCellSlot == dev->testTable[vcc->vci]->lastTime)
&& (tempFract == dev->testTable[vcc->vci]->fract))
foundLockUp = 1 ;
dev->testTable[vcc->vci]->lastTime = tempCellSlot;
dev->testTable[vcc->vci]->fract = tempFract;
}
} /* last descriptor */
vcstatus->cnt = 0 ;
} /* vcstatus->cnt */
if (foundLockUp) {
IF_ABR(printk("LOCK UP found\n" );)
writew(0 xFFFD, dev->seg_reg+MODE_REG_0);
/* Wait for 10 Micro sec */
udelay(10 );
abr_vc->status &= 0 xFFF8;
abr_vc->status |= 0 x0001; /* state is idle */
shd_tbl = (u_short *)dev->ABR_SCHED_TABLE_ADDR;
for ( i = 0 ; ((i < dev->num_vc) && (shd_tbl[i])); i++ );
if (i < dev->num_vc)
shd_tbl[i] = vcc->vci;
else
IF_ERR(printk("ABR Seg. may not continue on VC %x\n" ,vcc->vci);)
writew(T_ONLINE, dev->seg_reg+MODE_REG_0);
writew(~(TRANSMIT_DONE|TCQ_NOT_EMPTY), dev->seg_reg+SEG_MASK_REG);
writew(TRANSMIT_DONE, dev->seg_reg+SEG_INTR_STATUS_REG);
vcstatus->cnt = 0 ;
} /* foundLockUp */
} /* if an ABR VC */
}
/*
* * Conversion of 24 - bit cellrate ( cells / sec ) to 16 - bit floating point format .
* *
* * + - - - - + - - - - + - - - - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
* * | R | NZ | 5 - bit exponent | 9 - bit mantissa |
* * + - - - - + - - - - + - - - - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
* *
* * R = reserved ( written as 0 )
* * NZ = 0 if 0 cells / sec ; 1 otherwise
* *
* * if NZ = 1 , rate = 1 . mmmmmmmmm x 2 ^ ( eeeee ) cells / sec
*/
static u16
cellrate_to_float(u32 cr)
{
#define NZ 0 x4000
#define M_BITS 9 /* Number of bits in mantissa */
#define E_BITS 5 /* Number of bits in exponent */
#define M_MASK 0 x1ff
#define E_MASK 0 x1f
u16 flot;
u32 tmp = cr & 0 x00ffffff;
int i = 0 ;
if (cr == 0 )
return 0 ;
while (tmp != 1 ) {
tmp >>= 1 ;
i++;
}
if (i == M_BITS)
flot = NZ | (i << M_BITS) | (cr & M_MASK);
else if (i < M_BITS)
flot = NZ | (i << M_BITS) | ((cr << (M_BITS - i)) & M_MASK);
else
flot = NZ | (i << M_BITS) | ((cr >> (i - M_BITS)) & M_MASK);
return flot;
}
#if 0
/*
* * Conversion of 16 - bit floating point format to 24 - bit cellrate ( cells / sec ) .
*/
static u32
float_to_cellrate(u16 rate)
{
u32 exp, mantissa, cps;
if ((rate & NZ) == 0 )
return 0 ;
exp = (rate >> M_BITS) & E_MASK;
mantissa = rate & M_MASK;
if (exp == 0 )
return 1 ;
cps = (1 << M_BITS) | mantissa;
if (exp == M_BITS)
cps = cps;
else if (exp > M_BITS)
cps <<= (exp - M_BITS);
else
cps >>= (M_BITS - exp);
return cps;
}
#endif
static void init_abr_vc (IADEV *dev, srv_cls_param_t *srv_p) {
srv_p->class_type = ATM_ABR;
srv_p->pcr = dev->LineRate;
srv_p->mcr = 0 ;
srv_p->icr = 0 x055cb7;
srv_p->tbe = 0 xffffff;
srv_p->frtt = 0 x3a;
srv_p->rif = 0 xf;
srv_p->rdf = 0 xb;
srv_p->nrm = 0 x4;
srv_p->trm = 0 x7;
srv_p->cdf = 0 x3;
srv_p->adtf = 50 ;
}
static int
ia_open_abr_vc(IADEV *dev, srv_cls_param_t *srv_p,
struct atm_vcc *vcc, u8 flag)
{
f_vc_abr_entry *f_abr_vc;
r_vc_abr_entry *r_abr_vc;
u32 icr;
u8 trm, nrm, crm;
u16 adtf, air, *ptr16;
f_abr_vc =(f_vc_abr_entry *)dev->MAIN_VC_TABLE_ADDR;
f_abr_vc += vcc->vci;
switch (flag) {
case 1 : /* FFRED initialization */
#if 0 /* sanity check */
if (srv_p->pcr == 0 )
return INVALID_PCR;
if (srv_p->pcr > dev->LineRate)
srv_p->pcr = dev->LineRate;
if ((srv_p->mcr + dev->sum_mcr) > dev->LineRate)
return MCR_UNAVAILABLE;
if (srv_p->mcr > srv_p->pcr)
return INVALID_MCR;
if (!(srv_p->icr))
srv_p->icr = srv_p->pcr;
if ((srv_p->icr < srv_p->mcr) || (srv_p->icr > srv_p->pcr))
return INVALID_ICR;
if ((srv_p->tbe < MIN_TBE) || (srv_p->tbe > MAX_TBE))
return INVALID_TBE;
if ((srv_p->frtt < MIN_FRTT) || (srv_p->frtt > MAX_FRTT))
return INVALID_FRTT;
if (srv_p->nrm > MAX_NRM)
return INVALID_NRM;
if (srv_p->trm > MAX_TRM)
return INVALID_TRM;
if (srv_p->adtf > MAX_ADTF)
return INVALID_ADTF;
else if (srv_p->adtf == 0 )
srv_p->adtf = 1 ;
if (srv_p->cdf > MAX_CDF)
return INVALID_CDF;
if (srv_p->rif > MAX_RIF)
return INVALID_RIF;
if (srv_p->rdf > MAX_RDF)
return INVALID_RDF;
#endif
memset ((caddr_t)f_abr_vc, 0 , sizeof (*f_abr_vc));
f_abr_vc->f_vc_type = ABR;
nrm = 2 << srv_p->nrm; /* (2 ** (srv_p->nrm +1)) */
/* i.e 2**n = 2 << (n-1) */
f_abr_vc->f_nrm = nrm << 8 | nrm;
trm = 100000 /(2 << (16 - srv_p->trm));
if ( trm == 0 ) trm = 1 ;
f_abr_vc->f_nrmexp =(((srv_p->nrm +1 ) & 0 x0f) << 12 )|(MRM << 8 ) | trm;
crm = srv_p->tbe / nrm;
if (crm == 0 ) crm = 1 ;
f_abr_vc->f_crm = crm & 0 xff;
f_abr_vc->f_pcr = cellrate_to_float(srv_p->pcr);
icr = min( srv_p->icr, (srv_p->tbe > srv_p->frtt) ?
((srv_p->tbe/srv_p->frtt)*1000000 ) :
(1000000 /(srv_p->frtt/srv_p->tbe)));
f_abr_vc->f_icr = cellrate_to_float(icr);
adtf = (10000 * srv_p->adtf)/8192 ;
if (adtf == 0 ) adtf = 1 ;
f_abr_vc->f_cdf = ((7 - srv_p->cdf) << 12 | adtf) & 0 xfff;
f_abr_vc->f_mcr = cellrate_to_float(srv_p->mcr);
f_abr_vc->f_acr = f_abr_vc->f_icr;
f_abr_vc->f_status = 0 x0042;
break ;
case 0 : /* RFRED initialization */
ptr16 = (u_short *)(dev->reass_ram + REASS_TABLE*dev->memSize);
*(ptr16 + vcc->vci) = NO_AAL5_PKT | REASS_ABR;
r_abr_vc = (r_vc_abr_entry*)(dev->reass_ram+ABR_VC_TABLE*dev->memSize);
r_abr_vc += vcc->vci;
r_abr_vc->r_status_rdf = (15 - srv_p->rdf) & 0 x000f;
air = srv_p->pcr << (15 - srv_p->rif);
if (air == 0 ) air = 1 ;
r_abr_vc->r_air = cellrate_to_float(air);
dev->testTable[vcc->vci]->vc_status = VC_ACTIVE | VC_ABR;
dev->sum_mcr += srv_p->mcr;
dev->n_abr++;
break ;
default :
break ;
}
return 0 ;
}
static int ia_cbr_setup (IADEV *dev, struct atm_vcc *vcc) {
u32 rateLow=0 , rateHigh, rate;
int entries;
struct ia_vcc *ia_vcc;
int idealSlot =0 , testSlot, toBeAssigned, inc;
u32 spacing;
u16 *SchedTbl, *TstSchedTbl;
u16 cbrVC, vcIndex;
u32 fracSlot = 0 ;
u32 sp_mod = 0 ;
u32 sp_mod2 = 0 ;
/* IpAdjustTrafficParams */
if (vcc->qos.txtp.max_pcr <= 0 ) {
IF_ERR(printk("PCR for CBR not defined\n" );)
return -1 ;
}
rate = vcc->qos.txtp.max_pcr;
entries = rate / dev->Granularity;
IF_CBR(printk("CBR: CBR entries=0x%x for rate=0x%x & Gran=0x%x\n" ,
entries, rate, dev->Granularity);)
if (entries < 1 )
IF_CBR(printk("CBR: Bandwidth smaller than granularity of CBR table\n" );)
rateLow = entries * dev->Granularity;
rateHigh = (entries + 1 ) * dev->Granularity;
if (3 *(rate - rateLow) > (rateHigh - rate))
entries++;
if (entries > dev->CbrRemEntries) {
IF_CBR(printk("CBR: Not enough bandwidth to support this PCR.\n" );)
IF_CBR(printk("Entries = 0x%x, CbrRemEntries = 0x%x.\n" ,
entries, dev->CbrRemEntries);)
return -EBUSY;
}
ia_vcc = INPH_IA_VCC(vcc);
ia_vcc->NumCbrEntry = entries;
dev->sum_mcr += entries * dev->Granularity;
/* IaFFrednInsertCbrSched */
// Starting at an arbitrary location, place the entries into the table
// as smoothly as possible
cbrVC = 0 ;
spacing = dev->CbrTotEntries / entries;
sp_mod = dev->CbrTotEntries % entries; // get modulo
toBeAssigned = entries;
fracSlot = 0 ;
vcIndex = vcc->vci;
IF_CBR(printk("Vci=0x%x,Spacing=0x%x,Sp_mod=0x%x\n" ,vcIndex,spacing,sp_mod);)
while (toBeAssigned)
{
// If this is the first time, start the table loading for this connection
// as close to entryPoint as possible.
if (toBeAssigned == entries)
{
idealSlot = dev->CbrEntryPt;
dev->CbrEntryPt += 2 ; // Adding 2 helps to prevent clumping
if (dev->CbrEntryPt >= dev->CbrTotEntries)
dev->CbrEntryPt -= dev->CbrTotEntries;// Wrap if necessary
} else {
idealSlot += (u32)(spacing + fracSlot); // Point to the next location
// in the table that would be smoothest
fracSlot = ((sp_mod + sp_mod2) / entries); // get new integer part
sp_mod2 = ((sp_mod + sp_mod2) % entries); // calc new fractional part
}
if (idealSlot >= (int )dev->CbrTotEntries)
idealSlot -= dev->CbrTotEntries;
// Continuously check around this ideal value until a null
// location is encountered.
SchedTbl = (u16*)(dev->seg_ram+CBR_SCHED_TABLE*dev->memSize);
inc = 0 ;
testSlot = idealSlot;
TstSchedTbl = (u16*)(SchedTbl+testSlot); //set index and read in value
IF_CBR(printk("CBR Testslot 0x%x AT Location 0x%p, NumToAssign=%d\n" ,
testSlot, TstSchedTbl,toBeAssigned);)
memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof (cbrVC));
while (cbrVC) // If another VC at this location, we have to keep looking
{
inc++;
testSlot = idealSlot - inc;
if (testSlot < 0 ) { // Wrap if necessary
testSlot += dev->CbrTotEntries;
IF_CBR(printk("Testslot Wrap. STable Start=0x%p,Testslot=%d\n" ,
SchedTbl,testSlot);)
}
TstSchedTbl = (u16 *)(SchedTbl + testSlot); // set table index
memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof (cbrVC));
if (!cbrVC)
break ;
testSlot = idealSlot + inc;
if (testSlot >= (int )dev->CbrTotEntries) { // Wrap if necessary
testSlot -= dev->CbrTotEntries;
IF_CBR(printk("TotCbrEntries=%d" ,dev->CbrTotEntries);)
IF_CBR(printk(" Testslot=0x%x ToBeAssgned=%d\n" ,
testSlot, toBeAssigned);)
}
// set table index and read in value
TstSchedTbl = (u16*)(SchedTbl + testSlot);
IF_CBR(printk("Reading CBR Tbl from 0x%p, CbrVal=0x%x Iteration %d\n" ,
TstSchedTbl,cbrVC,inc);)
memcpy((caddr_t)&cbrVC,(caddr_t)TstSchedTbl,sizeof (cbrVC));
} /* while */
// Move this VCI number into this location of the CBR Sched table.
memcpy((caddr_t)TstSchedTbl, (caddr_t)&vcIndex, sizeof (*TstSchedTbl));
dev->CbrRemEntries--;
toBeAssigned--;
} /* while */
/* IaFFrednCbrEnable */
dev->NumEnabledCBR++;
if (dev->NumEnabledCBR == 1 ) {
writew((CBR_EN | UBR_EN | ABR_EN | (0 x23 << 2 )), dev->seg_reg+STPARMS);
IF_CBR(printk("CBR is enabled\n" );)
}
return 0 ;
}
static void ia_cbrVc_close (struct atm_vcc *vcc) {
IADEV *iadev;
u16 *SchedTbl, NullVci = 0 ;
u32 i, NumFound;
iadev = INPH_IA_DEV(vcc->dev);
iadev->NumEnabledCBR--;
SchedTbl = (u16*)(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize);
if (iadev->NumEnabledCBR == 0 ) {
writew((UBR_EN | ABR_EN | (0 x23 << 2 )), iadev->seg_reg+STPARMS);
IF_CBR (printk("CBR support disabled\n" );)
}
NumFound = 0 ;
for (i=0 ; i < iadev->CbrTotEntries; i++)
{
if (*SchedTbl == vcc->vci) {
iadev->CbrRemEntries++;
*SchedTbl = NullVci;
IF_CBR(NumFound++;)
}
SchedTbl++;
}
IF_CBR(printk("Exit ia_cbrVc_close, NumRemoved=%d\n" ,NumFound);)
}
static int ia_avail_descs(IADEV *iadev) {
int tmp = 0 ;
ia_hack_tcq(iadev);
if (iadev->host_tcq_wr >= iadev->ffL.tcq_rd)
tmp = (iadev->host_tcq_wr - iadev->ffL.tcq_rd) / 2 ;
else
tmp = (iadev->ffL.tcq_ed - iadev->ffL.tcq_rd + 2 + iadev->host_tcq_wr -
iadev->ffL.tcq_st) / 2 ;
return tmp;
}
static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb);
static int ia_que_tx (IADEV *iadev) {
struct sk_buff *skb;
int num_desc;
struct atm_vcc *vcc;
num_desc = ia_avail_descs(iadev);
while (num_desc && (skb = skb_dequeue(&iadev->tx_backlog))) {
if (!(vcc = ATM_SKB(skb)->vcc)) {
dev_kfree_skb_any(skb);
printk("ia_que_tx: Null vcc\n" );
break ;
}
if (!test_bit(ATM_VF_READY,&vcc->flags)) {
dev_kfree_skb_any(skb);
printk("Free the SKB on closed vci %d \n" , vcc->vci);
break ;
}
if (ia_pkt_tx (vcc, skb)) {
skb_queue_head(&iadev->tx_backlog, skb);
}
num_desc--;
}
return 0 ;
}
static void ia_tx_poll (IADEV *iadev) {
struct atm_vcc *vcc = NULL;
struct sk_buff *skb = NULL, *skb1 = NULL;
struct ia_vcc *iavcc;
IARTN_Q * rtne;
ia_hack_tcq(iadev);
while ( (rtne = ia_deque_rtn_q(&iadev->tx_return_q))) {
skb = rtne->data.txskb;
if (!skb) {
printk("ia_tx_poll: skb is null\n" );
goto out;
}
vcc = ATM_SKB(skb)->vcc;
if (!vcc) {
printk("ia_tx_poll: vcc is null\n" );
dev_kfree_skb_any(skb);
goto out;
}
iavcc = INPH_IA_VCC(vcc);
if (!iavcc) {
printk("ia_tx_poll: iavcc is null\n" );
dev_kfree_skb_any(skb);
goto out;
}
skb1 = skb_dequeue(&iavcc->txing_skb);
while (skb1 && (skb1 != skb)) {
if (!(IA_SKB_STATE(skb1) & IA_TX_DONE)) {
printk("IA_tx_intr: Vci %d lost pkt!!!\n" , vcc->vci);
}
IF_ERR(printk("Release the SKB not match\n" );)
if ((vcc->pop) && (skb1->len != 0 ))
{
vcc->pop(vcc, skb1);
IF_EVENT(printk("Transmit Done - skb 0x%lx return\n" ,
(long )skb1);)
}
else
dev_kfree_skb_any(skb1);
skb1 = skb_dequeue(&iavcc->txing_skb);
}
if (!skb1) {
IF_EVENT(printk("IA: Vci %d - skb not found requeued\n" ,vcc->vci);)
ia_enque_head_rtn_q (&iadev->tx_return_q, rtne);
break ;
}
if ((vcc->pop) && (skb->len != 0 ))
{
vcc->pop(vcc, skb);
IF_EVENT(printk("Tx Done - skb 0x%lx return\n" ,(long )skb);)
}
else
dev_kfree_skb_any(skb);
kfree(rtne);
}
ia_que_tx(iadev);
out:
return ;
}
#if 0
static void ia_eeprom_put (IADEV *iadev, u32 addr, u_short val)
{
u32 t;
int i;
/*
* Issue a command to enable writes to the NOVRAM
*/
NVRAM_CMD (EXTEND + EWEN);
NVRAM_CLR_CE;
/*
* issue the write command
*/
NVRAM_CMD(IAWRITE + addr);
/*
* Send the data , starting with D15 , then D14 , and so on for 16 bits
*/
for (i=15 ; i>=0 ; i--) {
NVRAM_CLKOUT (val & 0 x8000);
val <<= 1 ;
}
NVRAM_CLR_CE;
CFG_OR(NVCE);
t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS);
while (!(t & NVDO))
t = readl(iadev->reg+IPHASE5575_EEPROM_ACCESS);
NVRAM_CLR_CE;
/*
* disable writes again
*/
NVRAM_CMD(EXTEND + EWDS)
NVRAM_CLR_CE;
CFG_AND(~NVDI);
}
#endif
static u16 ia_eeprom_get (IADEV *iadev, u32 addr)
{
u_short val;
u32 t;
int i;
/*
* Read the first bit that was clocked with the falling edge of
* the last command data clock
*/
NVRAM_CMD(IAREAD + addr);
/*
* Now read the rest of the bits , the next bit read is D14 , then D13 ,
* and so on .
*/
val = 0 ;
for (i=15 ; i>=0 ; i--) {
NVRAM_CLKIN(t);
val |= (t << i);
}
NVRAM_CLR_CE;
CFG_AND(~NVDI);
return val;
}
static void ia_hw_type(IADEV *iadev) {
u_short memType = ia_eeprom_get(iadev, 25 );
iadev->memType = memType;
if ((memType & MEM_SIZE_MASK) == MEM_SIZE_1M) {
iadev->num_tx_desc = IA_TX_BUF;
iadev->tx_buf_sz = IA_TX_BUF_SZ;
iadev->num_rx_desc = IA_RX_BUF;
iadev->rx_buf_sz = IA_RX_BUF_SZ;
} else if ((memType & MEM_SIZE_MASK) == MEM_SIZE_512K) {
if (IA_TX_BUF == DFL_TX_BUFFERS)
iadev->num_tx_desc = IA_TX_BUF / 2 ;
else
iadev->num_tx_desc = IA_TX_BUF;
iadev->tx_buf_sz = IA_TX_BUF_SZ;
if (IA_RX_BUF == DFL_RX_BUFFERS)
iadev->num_rx_desc = IA_RX_BUF / 2 ;
else
iadev->num_rx_desc = IA_RX_BUF;
iadev->rx_buf_sz = IA_RX_BUF_SZ;
}
else {
if (IA_TX_BUF == DFL_TX_BUFFERS)
iadev->num_tx_desc = IA_TX_BUF / 8 ;
else
iadev->num_tx_desc = IA_TX_BUF;
iadev->tx_buf_sz = IA_TX_BUF_SZ;
if (IA_RX_BUF == DFL_RX_BUFFERS)
iadev->num_rx_desc = IA_RX_BUF / 8 ;
else
iadev->num_rx_desc = IA_RX_BUF;
iadev->rx_buf_sz = IA_RX_BUF_SZ;
}
iadev->rx_pkt_ram = TX_PACKET_RAM + (iadev->num_tx_desc * iadev->tx_buf_sz);
IF_INIT(printk("BUF: tx=%d,sz=%d rx=%d sz= %d rx_pkt_ram=%d\n" ,
iadev->num_tx_desc, iadev->tx_buf_sz, iadev->num_rx_desc,
iadev->rx_buf_sz, iadev->rx_pkt_ram);)
#if 0
if ((memType & FE_MASK) == FE_SINGLE_MODE) {
iadev->phy_type = PHY_OC3C_S;
else if ((memType & FE_MASK) == FE_UTP_OPTION)
iadev->phy_type = PHY_UTP155;
else
iadev->phy_type = PHY_OC3C_M;
#endif
iadev->phy_type = memType & FE_MASK;
IF_INIT(printk("memType = 0x%x iadev->phy_type = 0x%x\n" ,
memType,iadev->phy_type);)
if (iadev->phy_type == FE_25MBIT_PHY)
iadev->LineRate = (u32)(((25600000 /8 )*26 )/(27 *53 ));
else if (iadev->phy_type == FE_DS3_PHY)
iadev->LineRate = (u32)(((44736000 /8 )*26 )/(27 *53 ));
else if (iadev->phy_type == FE_E3_PHY)
iadev->LineRate = (u32)(((34368000 /8 )*26 )/(27 *53 ));
else
iadev->LineRate = (u32)(ATM_OC3_PCR);
IF_INIT(printk("iadev->LineRate = %d \n" , iadev->LineRate);)
}
static u32 ia_phy_read32(struct iadev_priv *ia, unsigned int reg)
{
return readl(ia->phy + (reg >> 2 ));
}
static void ia_phy_write32(struct iadev_priv *ia, unsigned int reg, u32 val)
{
writel(val, ia->phy + (reg >> 2 ));
}
static void ia_frontend_intr(struct iadev_priv *iadev)
{
u32 status;
if (iadev->phy_type & FE_25MBIT_PHY) {
status = ia_phy_read32(iadev, MB25_INTR_STATUS);
iadev->carrier_detect = (status & MB25_IS_GSB) ? 1 : 0 ;
} else if (iadev->phy_type & FE_DS3_PHY) {
ia_phy_read32(iadev, SUNI_DS3_FRM_INTR_STAT);
status = ia_phy_read32(iadev, SUNI_DS3_FRM_STAT);
iadev->carrier_detect = (status & SUNI_DS3_LOSV) ? 0 : 1 ;
} else if (iadev->phy_type & FE_E3_PHY) {
ia_phy_read32(iadev, SUNI_E3_FRM_MAINT_INTR_IND);
status = ia_phy_read32(iadev, SUNI_E3_FRM_FRAM_INTR_IND_STAT);
iadev->carrier_detect = (status & SUNI_E3_LOS) ? 0 : 1 ;
} else {
status = ia_phy_read32(iadev, SUNI_RSOP_STATUS);
iadev->carrier_detect = (status & SUNI_LOSV) ? 0 : 1 ;
}
printk(KERN_INFO "IA: SUNI carrier %s\n" ,
iadev->carrier_detect ? "detected" : "lost signal" );
}
static void ia_mb25_init(struct iadev_priv *iadev)
{
#if 0
mb25->mb25_master_ctrl = MB25_MC_DRIC | MB25_MC_DREC | MB25_MC_ENABLED;
#endif
ia_phy_write32(iadev, MB25_MASTER_CTRL, MB25_MC_DRIC | MB25_MC_DREC);
ia_phy_write32(iadev, MB25_DIAG_CONTROL, 0 );
iadev->carrier_detect =
(ia_phy_read32(iadev, MB25_INTR_STATUS) & MB25_IS_GSB) ? 1 : 0 ;
}
struct ia_reg {
u16 reg;
u16 val;
};
static void ia_phy_write(struct iadev_priv *iadev,
const struct ia_reg *regs, int len)
{
while (len--) {
ia_phy_write32(iadev, regs->reg, regs->val);
regs++;
}
}
static void ia_suni_pm7345_init_ds3(struct iadev_priv *iadev)
{
static const struct ia_reg suni_ds3_init[] = {
{ SUNI_DS3_FRM_INTR_ENBL, 0 x17 },
{ SUNI_DS3_FRM_CFG, 0 x01 },
{ SUNI_DS3_TRAN_CFG, 0 x01 },
{ SUNI_CONFIG, 0 },
{ SUNI_SPLR_CFG, 0 },
{ SUNI_SPLT_CFG, 0 }
};
u32 status;
status = ia_phy_read32(iadev, SUNI_DS3_FRM_STAT);
iadev->carrier_detect = (status & SUNI_DS3_LOSV) ? 0 : 1 ;
ia_phy_write(iadev, suni_ds3_init, ARRAY_SIZE(suni_ds3_init));
}
static void ia_suni_pm7345_init_e3(struct iadev_priv *iadev)
{
static const struct ia_reg suni_e3_init[] = {
{ SUNI_E3_FRM_FRAM_OPTIONS, 0 x04 },
{ SUNI_E3_FRM_MAINT_OPTIONS, 0 x20 },
{ SUNI_E3_FRM_FRAM_INTR_ENBL, 0 x1d },
{ SUNI_E3_FRM_MAINT_INTR_ENBL, 0 x30 },
{ SUNI_E3_TRAN_STAT_DIAG_OPTIONS, 0 },
{ SUNI_E3_TRAN_FRAM_OPTIONS, 0 x01 },
{ SUNI_CONFIG, SUNI_PM7345_E3ENBL },
{ SUNI_SPLR_CFG, 0 x41 },
{ SUNI_SPLT_CFG, 0 x41 }
};
u32 status;
status = ia_phy_read32(iadev, SUNI_E3_FRM_FRAM_INTR_IND_STAT);
iadev->carrier_detect = (status & SUNI_E3_LOS) ? 0 : 1 ;
ia_phy_write(iadev, suni_e3_init, ARRAY_SIZE(suni_e3_init));
}
static void ia_suni_pm7345_init(struct iadev_priv *iadev)
{
static const struct ia_reg suni_init[] = {
/* Enable RSOP loss of signal interrupt. */
{ SUNI_INTR_ENBL, 0 x28 },
/* Clear error counters. */
{ SUNI_ID_RESET, 0 },
/* Clear "PMCTST" in master test register. */
{ SUNI_MASTER_TEST, 0 },
{ SUNI_RXCP_CTRL, 0 x2c },
{ SUNI_RXCP_FCTRL, 0 x81 },
{ SUNI_RXCP_IDLE_PAT_H1, 0 },
{ SUNI_RXCP_IDLE_PAT_H2, 0 },
{ SUNI_RXCP_IDLE_PAT_H3, 0 },
{ SUNI_RXCP_IDLE_PAT_H4, 0 x01 },
{ SUNI_RXCP_IDLE_MASK_H1, 0 xff },
{ SUNI_RXCP_IDLE_MASK_H2, 0 xff },
{ SUNI_RXCP_IDLE_MASK_H3, 0 xff },
{ SUNI_RXCP_IDLE_MASK_H4, 0 xfe },
{ SUNI_RXCP_CELL_PAT_H1, 0 },
{ SUNI_RXCP_CELL_PAT_H2, 0 },
{ SUNI_RXCP_CELL_PAT_H3, 0 },
{ SUNI_RXCP_CELL_PAT_H4, 0 x01 },
{ SUNI_RXCP_CELL_MASK_H1, 0 xff },
{ SUNI_RXCP_CELL_MASK_H2, 0 xff },
{ SUNI_RXCP_CELL_MASK_H3, 0 xff },
{ SUNI_RXCP_CELL_MASK_H4, 0 xff },
{ SUNI_TXCP_CTRL, 0 xa4 },
{ SUNI_TXCP_INTR_EN_STS, 0 x10 },
{ SUNI_TXCP_IDLE_PAT_H5, 0 x55 }
};
if (iadev->phy_type & FE_DS3_PHY)
ia_suni_pm7345_init_ds3(iadev);
else
ia_suni_pm7345_init_e3(iadev);
ia_phy_write(iadev, suni_init, ARRAY_SIZE(suni_init));
ia_phy_write32(iadev, SUNI_CONFIG, ia_phy_read32(iadev, SUNI_CONFIG) &
~(SUNI_PM7345_LLB | SUNI_PM7345_CLB |
SUNI_PM7345_DLB | SUNI_PM7345_PLB));
#ifdef __SNMP__
suni_pm7345->suni_rxcp_intr_en_sts |= SUNI_OOCDE;
#endif /* __SNMP__ */
return ;
}
/***************************** IA_LIB END *****************************/
#ifdef CONFIG_ATM_IA_DEBUG
static int tcnter = 0 ;
static void xdump( u_char* cp, int length, char * prefix )
{
int col, count;
u_char prntBuf[120 ];
u_char* pBuf = prntBuf;
count = 0 ;
while (count < length){
pBuf += sprintf( pBuf, "%s" , prefix );
for (col = 0 ;count + col < length && col < 16 ; col++){
if (col != 0 && (col % 4 ) == 0 )
pBuf += sprintf( pBuf, " " );
pBuf += sprintf( pBuf, "%02X " , cp[count + col] );
}
while (col++ < 16 ){ /* pad end of buffer with blanks */
if ((col % 4 ) == 0 )
sprintf( pBuf, " " );
pBuf += sprintf( pBuf, " " );
}
pBuf += sprintf( pBuf, " " );
for (col = 0 ;count + col < length && col < 16 ; col++){
u_char c = cp[count + col];
if (isascii(c) && isprint(c))
pBuf += sprintf(pBuf, "%c" , c);
else
pBuf += sprintf(pBuf, "." );
}
printk("%s\n" , prntBuf);
count += col;
pBuf = prntBuf;
}
} /* close xdump(... */
#endif /* CONFIG_ATM_IA_DEBUG */
static struct atm_dev *ia_boards = NULL;
#define ACTUAL_RAM_BASE \
RAM_BASE*((iadev->mem)/(128 * 1024 ))
#define ACTUAL_SEG_RAM_BASE \
IPHASE5575_FRAG_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024 ))
#define ACTUAL_REASS_RAM_BASE \
IPHASE5575_REASS_CONTROL_RAM_BASE*((iadev->mem)/(128 * 1024 ))
/*-- some utilities and memory allocation stuff will come here -------------*/
static void desc_dbg(IADEV *iadev) {
u_short tcq_wr_ptr, tcq_st_ptr, tcq_ed_ptr;
u32 i;
void __iomem *tmp;
// regval = readl((u32)ia_cmds->maddr);
tcq_wr_ptr = readw(iadev->seg_reg+TCQ_WR_PTR);
printk("B_tcq_wr = 0x%x desc = %d last desc = %d\n" ,
tcq_wr_ptr, readw(iadev->seg_ram+tcq_wr_ptr),
readw(iadev->seg_ram+tcq_wr_ptr-2 ));
printk(" host_tcq_wr = 0x%x host_tcq_rd = 0x%x \n" , iadev->host_tcq_wr,
iadev->ffL.tcq_rd);
tcq_st_ptr = readw(iadev->seg_reg+TCQ_ST_ADR);
tcq_ed_ptr = readw(iadev->seg_reg+TCQ_ED_ADR);
printk("tcq_st_ptr = 0x%x tcq_ed_ptr = 0x%x \n" , tcq_st_ptr, tcq_ed_ptr);
i = 0 ;
while (tcq_st_ptr != tcq_ed_ptr) {
tmp = iadev->seg_ram+tcq_st_ptr;
printk("TCQ slot %d desc = %d Addr = %p\n" , i++, readw(tmp), tmp);
tcq_st_ptr += 2 ;
}
for (i=0 ; i <iadev->num_tx_desc; i++)
printk("Desc_tbl[%d] = %d \n" , i, iadev->desc_tbl[i].timestamp);
}
/*----------------------------- Receiving side stuff --------------------------*/
static void rx_excp_rcvd(struct atm_dev *dev)
{
#if 0 /* closing the receiving size will cause too many excp int */
IADEV *iadev;
u_short state;
u_short excpq_rd_ptr;
//u_short *ptr;
int vci, error = 1 ;
iadev = INPH_IA_DEV(dev);
state = readl(iadev->reass_reg + STATE_REG) & 0 xffff;
while ((state & EXCPQ_EMPTY) != EXCPQ_EMPTY)
{ printk("state = %x \n" , state);
excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_RD_PTR) & 0 xffff;
printk("state = %x excpq_rd_ptr = %x \n" , state, excpq_rd_ptr);
if (excpq_rd_ptr == *(u16*)(iadev->reass_reg + EXCP_Q_WR_PTR))
IF_ERR(printk("excpq_rd_ptr is wrong!!!\n" );)
// TODO: update exception stat
vci = readw(iadev->reass_ram+excpq_rd_ptr);
error = readw(iadev->reass_ram+excpq_rd_ptr+2 ) & 0 x0007;
// pwang_test
excpq_rd_ptr += 4 ;
if (excpq_rd_ptr > (readw(iadev->reass_reg + EXCP_Q_ED_ADR)& 0 xffff))
excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_ST_ADR)& 0 xffff;
writew( excpq_rd_ptr, iadev->reass_reg + EXCP_Q_RD_PTR);
state = readl(iadev->reass_reg + STATE_REG) & 0 xffff;
}
#endif
}
static void free_desc(struct atm_dev *dev, int desc)
{
IADEV *iadev;
iadev = INPH_IA_DEV(dev);
writew(desc, iadev->reass_ram+iadev->rfL.fdq_wr);
iadev->rfL.fdq_wr +=2 ;
if (iadev->rfL.fdq_wr > iadev->rfL.fdq_ed)
iadev->rfL.fdq_wr = iadev->rfL.fdq_st;
writew(iadev->rfL.fdq_wr, iadev->reass_reg+FREEQ_WR_PTR);
}
static int rx_pkt(struct atm_dev *dev)
{
IADEV *iadev;
struct atm_vcc *vcc;
unsigned short status;
struct rx_buf_desc __iomem *buf_desc_ptr;
int desc;
struct dle* wr_ptr;
int len;
struct sk_buff *skb;
u_int buf_addr, dma_addr;
iadev = INPH_IA_DEV(dev);
if (iadev->rfL.pcq_rd == (readw(iadev->reass_reg+PCQ_WR_PTR)&>0 xffff))
{
printk(KERN_ERR DEV_LABEL "(itf %d) Receive queue empty\n" , dev->number);
return -EINVAL;
}
/* mask 1st 3 bits to get the actual descno. */
desc = readw(iadev->reass_ram+iadev->rfL.pcq_rd) & 0 x1fff;
IF_RX(printk("reass_ram = %p iadev->rfL.pcq_rd = 0x%x desc = %d\n" ,
iadev->reass_ram, iadev->rfL.pcq_rd, desc);
printk(" pcq_wr_ptr = 0x%x\n" ,
readw(iadev->reass_reg+PCQ_WR_PTR)&0 xffff);)
/* update the read pointer - maybe we shud do this in the end*/
if ( iadev->rfL.pcq_rd== iadev->rfL.pcq_ed)
iadev->rfL.pcq_rd = iadev->rfL.pcq_st;
else
iadev->rfL.pcq_rd += 2 ;
writew(iadev->rfL.pcq_rd, iadev->reass_reg+PCQ_RD_PTR);
/* get the buffer desc entry.
update stuff . - doesn ' t seem to be any update necessary
*/
buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
/* make the ptr point to the corresponding buffer desc entry */
buf_desc_ptr += desc;
if (!desc || (desc > iadev->num_rx_desc) ||
((buf_desc_ptr->vc_index & 0 xffff) >= iadev->num_vc)) {
free_desc(dev, desc);
IF_ERR(printk("IA: bad descriptor desc = %d \n" , desc);)
return -1 ;
}
vcc = iadev->rx_open[buf_desc_ptr->vc_index & 0 xffff];
if (!vcc)
{
free_desc(dev, desc);
printk("IA: null vcc, drop PDU\n" );
return -1 ;
}
/* might want to check the status bits for errors */
status = (u_short) (buf_desc_ptr->desc_mode);
if (status & (RX_CER | RX_PTE | RX_OFL))
{
atomic_inc(&vcc->stats->rx_err);
IF_ERR(printk("IA: bad packet, dropping it" );)
if (status & RX_CER) {
IF_ERR(printk(" cause: packet CRC error\n" );)
}
else if (status & RX_PTE) {
IF_ERR(printk(" cause: packet time out\n" );)
}
else {
IF_ERR(printk(" cause: buffer overflow\n" );)
}
goto out_free_desc;
}
/*
build DLE .
*/
buf_addr = (buf_desc_ptr->buf_start_hi << 16 ) | buf_desc_ptr->buf_start_lo;
dma_addr = (buf_desc_ptr->dma_start_hi << 16 ) | buf_desc_ptr->dma_start_lo;
len = dma_addr - buf_addr;
if (len > iadev->rx_buf_sz) {
printk("Over %d bytes sdu received, dropped!!!\n" , iadev->rx_buf_sz);
atomic_inc(&vcc->stats->rx_err);
goto out_free_desc;
}
if (!(skb = atm_alloc_charge(vcc, len, GFP_ATOMIC))) {
if (vcc->vci < 32 )
printk("Drop control packets\n" );
goto out_free_desc;
}
skb_put(skb,len);
// pwang_test
ATM_SKB(skb)->vcc = vcc;
ATM_DESC(skb) = desc;
skb_queue_tail(&iadev->rx_dma_q, skb);
/* Build the DLE structure */
wr_ptr = iadev->rx_dle_q.write;
wr_ptr->sys_pkt_addr = dma_map_single(&iadev->pci->dev, skb->data,
len, DMA_FROM_DEVICE);
wr_ptr->local_pkt_addr = buf_addr;
wr_ptr->bytes = len; /* We don't know this do we ?? */
wr_ptr->mode = DMA_INT_ENABLE;
/* shud take care of wrap around here too. */
if (++wr_ptr == iadev->rx_dle_q.end)
wr_ptr = iadev->rx_dle_q.start;
iadev->rx_dle_q.write = wr_ptr;
udelay(1 );
/* Increment transaction counter */
writel(1 , iadev->dma+IPHASE5575_RX_COUNTER);
out: return 0 ;
out_free_desc:
free_desc(dev, desc);
goto out;
}
static void rx_intr(struct atm_dev *dev)
{
IADEV *iadev;
u_short status;
u_short state, i;
iadev = INPH_IA_DEV(dev);
status = readl(iadev->reass_reg+REASS_INTR_STATUS_REG) & 0 xffff;
IF_EVENT(printk("rx_intr: status = 0x%x\n" , status);)
if (status & RX_PKT_RCVD)
{
/* do something */
/* Basically recvd an interrupt for receiving a packet.
A descriptor would have been written to the packet complete
queue . Get all the descriptors and set up dma to move the
packets till the packet complete queue is empty . .
*/
state = readl(iadev->reass_reg + STATE_REG) & 0 xffff;
IF_EVENT(printk("Rx intr status: RX_PKT_RCVD %08x\n" , status);)
while (!(state & PCQ_EMPTY))
{
rx_pkt(dev);
state = readl(iadev->reass_reg + STATE_REG) & 0 xffff;
}
iadev->rxing = 1 ;
}
if (status & RX_FREEQ_EMPT)
{
if (iadev->rxing) {
iadev->rx_tmp_cnt = iadev->rx_pkt_cnt;
iadev->rx_tmp_jif = jiffies;
iadev->rxing = 0 ;
}
else if ((time_after(jiffies, iadev->rx_tmp_jif + 50 )) &&
((iadev->rx_pkt_cnt - iadev->rx_tmp_cnt) == 0 )) {
for (i = 1 ; i <= iadev->num_rx_desc; i++)
free_desc(dev, i);
printk("Test logic RUN!!!!\n" );
writew( ~(RX_FREEQ_EMPT|RX_EXCP_RCVD),iadev->reass_reg+REASS_MASK_REG);
iadev->rxing = 1 ;
}
IF_EVENT(printk("Rx intr status: RX_FREEQ_EMPT %08x\n" , status);)
}
if (status & RX_EXCP_RCVD)
{
/* probably need to handle the exception queue also. */
IF_EVENT(printk("Rx intr status: RX_EXCP_RCVD %08x\n" , status);)
rx_excp_rcvd(dev);
}
if (status & RX_RAW_RCVD)
{
/* need to handle the raw incoming cells. This deepnds on
whether we have programmed to receive the raw cells or not .
Else ignore. */
IF_EVENT(printk("Rx intr status: RX_RAW_RCVD %08x\n" , status);)
}
}
static void rx_dle_intr(struct atm_dev *dev)
{
IADEV *iadev;
struct atm_vcc *vcc;
struct sk_buff *skb;
int desc;
u_short state;
struct dle *dle, *cur_dle;
u_int dle_lp;
int len;
iadev = INPH_IA_DEV(dev);
/* free all the dles done, that is just update our own dle read pointer
- do we really need to do this. Think not. */
/* DMA is done, just get all the recevie buffers from the rx dma queue
and push them up to the higher layer protocol . Also free the desc
associated with the buffer. */
dle = iadev->rx_dle_q.read;
dle_lp = readl(iadev->dma+IPHASE5575_RX_LIST_ADDR) & (sizeof (struct dle)*DLE_ENTRIES - 1 );
cur_dle = (struct dle*)(iadev->rx_dle_q.start + (dle_lp >> 4 ));
while (dle != cur_dle)
{
/* free the DMAed skb */
skb = skb_dequeue(&iadev->rx_dma_q);
if (!skb)
goto INCR_DLE;
desc = ATM_DESC(skb);
free_desc(dev, desc);
if (!(len = skb->len))
{
printk("rx_dle_intr: skb len 0\n" );
dev_kfree_skb_any(skb);
}
else
{
struct cpcs_trailer *trailer;
u_short length;
struct ia_vcc *ia_vcc;
dma_unmap_single(&iadev->pci->dev, iadev->rx_dle_q.write->sys_pkt_addr,
len, DMA_FROM_DEVICE);
/* no VCC related housekeeping done as yet. lets see */
vcc = ATM_SKB(skb)->vcc;
if (!vcc) {
printk("IA: null vcc\n" );
dev_kfree_skb_any(skb);
goto INCR_DLE;
}
ia_vcc = INPH_IA_VCC(vcc);
if (ia_vcc == NULL)
{
atomic_inc(&vcc->stats->rx_err);
atm_return(vcc, skb->truesize);
dev_kfree_skb_any(skb);
goto INCR_DLE;
}
// get real pkt length pwang_test
trailer = (struct cpcs_trailer*)((u_char *)skb->data +
skb->len - sizeof (*trailer));
length = swap_byte_order(trailer->length);
if ((length > iadev->rx_buf_sz) || (length >
(skb->len - sizeof (struct cpcs_trailer))))
{
atomic_inc(&vcc->stats->rx_err);
IF_ERR(printk("rx_dle_intr: Bad AAL5 trailer %d (skb len %d)" ,
length, skb->len);)
atm_return(vcc, skb->truesize);
dev_kfree_skb_any(skb);
goto INCR_DLE;
}
skb_trim(skb, length);
/* Display the packet */
IF_RXPKT(printk("\nDmad Recvd data: len = %d \n" , skb->len);
xdump(skb->data, skb->len, "RX: " );
printk("\n" );)
IF_RX(printk("rx_dle_intr: skb push" );)
vcc->push(vcc,skb);
atomic_inc(&vcc->stats->rx);
iadev->rx_pkt_cnt++;
}
INCR_DLE:
if (++dle == iadev->rx_dle_q.end)
dle = iadev->rx_dle_q.start;
}
iadev->rx_dle_q.read = dle;
/* if the interrupts are masked because there were no free desc available,
unmask them now. */
if (!iadev->rxing) {
state = readl(iadev->reass_reg + STATE_REG) & 0 xffff;
if (!(state & FREEQ_EMPTY)) {
state = readl(iadev->reass_reg + REASS_MASK_REG) & 0 xffff;
writel(state & ~(RX_FREEQ_EMPT |/* RX_EXCP_RCVD |*/ RX_PKT_RCVD),
iadev->reass_reg+REASS_MASK_REG);
iadev->rxing++;
}
}
}
static int open_rx(struct atm_vcc *vcc)
{
IADEV *iadev;
u_short __iomem *vc_table;
u_short __iomem *reass_ptr;
IF_EVENT(printk("iadev: open_rx %d.%d\n" , vcc->vpi, vcc->vci);)
if (vcc->qos.rxtp.traffic_class == ATM_NONE) return 0 ;
iadev = INPH_IA_DEV(vcc->dev);
if (vcc->qos.rxtp.traffic_class == ATM_ABR) {
if (iadev->phy_type & FE_25MBIT_PHY) {
printk("IA: ABR not support\n" );
return -EINVAL;
}
}
/* Make only this VCI in the vc table valid and let all
others be invalid entries */
vc_table = iadev->reass_ram+RX_VC_TABLE*iadev->memSize;
vc_table += vcc->vci;
/* mask the last 6 bits and OR it with 3 for 1K VCs */
*vc_table = vcc->vci << 6 ;
/* Also keep a list of open rx vcs so that we can attach them with
incoming PDUs later. */
if ((vcc->qos.rxtp.traffic_class == ATM_ABR) ||
(vcc->qos.txtp.traffic_class == ATM_ABR))
{
srv_cls_param_t srv_p;
init_abr_vc(iadev, &srv_p);
ia_open_abr_vc(iadev, &srv_p, vcc, 0 );
}
else { /* for UBR later may need to add CBR logic */
reass_ptr = iadev->reass_ram+REASS_TABLE*iadev->memSize;
reass_ptr += vcc->vci;
*reass_ptr = NO_AAL5_PKT;
}
if (iadev->rx_open[vcc->vci])
printk(KERN_CRIT DEV_LABEL "(itf %d): VCI %d already open\n" ,
vcc->dev->number, vcc->vci);
iadev->rx_open[vcc->vci] = vcc;
return 0 ;
}
static int rx_init(struct atm_dev *dev)
{
IADEV *iadev;
struct rx_buf_desc __iomem *buf_desc_ptr;
unsigned long rx_pkt_start = 0 ;
void *dle_addr;
struct abr_vc_table *abr_vc_table;
u16 *vc_table;
u16 *reass_table;
int i,j, vcsize_sel;
u_short freeq_st_adr;
u_short *freeq_start;
iadev = INPH_IA_DEV(dev);
// spin_lock_init(&iadev->rx_lock);
/* Allocate 4k bytes - more aligned than needed (4k boundary) */
dle_addr = dma_alloc_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE,
&iadev->rx_dle_dma, GFP_KERNEL);
if (!dle_addr) {
printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n" );
goto err_out;
}
iadev->rx_dle_q.start = (struct dle *)dle_addr;
iadev->rx_dle_q.read = iadev->rx_dle_q.start;
iadev->rx_dle_q.write = iadev->rx_dle_q.start;
iadev->rx_dle_q.end = (struct dle*)((unsigned long )dle_addr+sizeof (struct dle)*DLE_ENTRIES);
/* the end of the dle q points to the entry after the last
DLE that can be used. */
/* write the upper 20 bits of the start address to rx list address register */
/* We know this is 32bit bus addressed so the following is safe */
writel(iadev->rx_dle_dma & 0 xfffff000,
iadev->dma + IPHASE5575_RX_LIST_ADDR);
IF_INIT(printk("Tx Dle list addr: 0x%p value: 0x%0x\n" ,
iadev->dma+IPHASE5575_TX_LIST_ADDR,
readl(iadev->dma + IPHASE5575_TX_LIST_ADDR));
printk("Rx Dle list addr: 0x%p value: 0x%0x\n" ,
iadev->dma+IPHASE5575_RX_LIST_ADDR,
readl(iadev->dma + IPHASE5575_RX_LIST_ADDR));)
writew(0 xffff, iadev->reass_reg+REASS_MASK_REG);
writew(0 , iadev->reass_reg+MODE_REG);
writew(RESET_REASS, iadev->reass_reg+REASS_COMMAND_REG);
/* Receive side control memory map
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Buffer descr 0 x0000 ( 736 - 23 K )
VP Table 0 x5c00 ( 256 - 512 )
Except q 0 x5e00 ( 128 - 512 )
Free buffer q 0 x6000 ( 1 K - 2 K )
Packet comp q 0 x6800 ( 1 K - 2 K )
Reass Table 0 x7000 ( 1 K - 2 K )
VC Table 0 x7800 ( 1 K - 2 K )
ABR VC Table 0 x8000 ( 1 K - 32 K )
*/
/* Base address for Buffer Descriptor Table */
writew(RX_DESC_BASE >> 16 , iadev->reass_reg+REASS_DESC_BASE);
/* Set the buffer size register */
writew(iadev->rx_buf_sz, iadev->reass_reg+BUF_SIZE);
/* Initialize each entry in the Buffer Descriptor Table */
iadev->RX_DESC_BASE_ADDR = iadev->reass_ram+RX_DESC_BASE*iadev->memSize;
buf_desc_ptr = iadev->RX_DESC_BASE_ADDR;
memset_io(buf_desc_ptr, 0 , sizeof (*buf_desc_ptr));
buf_desc_ptr++;
rx_pkt_start = iadev->rx_pkt_ram;
for (i=1 ; i<=iadev->num_rx_desc; i++)
{
memset_io(buf_desc_ptr, 0 , sizeof (*buf_desc_ptr));
buf_desc_ptr->buf_start_hi = rx_pkt_start >> 16 ;
buf_desc_ptr->buf_start_lo = rx_pkt_start & 0 x0000ffff;
buf_desc_ptr++;
rx_pkt_start += iadev->rx_buf_sz;
}
IF_INIT(printk("Rx Buffer desc ptr: 0x%p\n" , buf_desc_ptr);)
i = FREE_BUF_DESC_Q*iadev->memSize;
writew(i >> 16 , iadev->reass_reg+REASS_QUEUE_BASE);
writew(i, iadev->reass_reg+FREEQ_ST_ADR);
writew(i+iadev->num_rx_desc*sizeof (u_short),
iadev->reass_reg+FREEQ_ED_ADR);
writew(i, iadev->reass_reg+FREEQ_RD_PTR);
writew(i+iadev->num_rx_desc*sizeof (u_short),
iadev->reass_reg+FREEQ_WR_PTR);
/* Fill the FREEQ with all the free descriptors. */
freeq_st_adr = readw(iadev->reass_reg+FREEQ_ST_ADR);
freeq_start = (u_short *)(iadev->reass_ram+freeq_st_adr);
for (i=1 ; i<=iadev->num_rx_desc; i++)
{
*freeq_start = (u_short)i;
freeq_start++;
}
IF_INIT(printk("freeq_start: 0x%p\n" , freeq_start);)
/* Packet Complete Queue */
i = (PKT_COMP_Q * iadev->memSize) & 0 xffff;
writew(i, iadev->reass_reg+PCQ_ST_ADR);
writew(i+iadev->num_vc*sizeof (u_short), iadev->reass_reg+PCQ_ED_ADR);
writew(i, iadev->reass_reg+PCQ_RD_PTR);
writew(i, iadev->reass_reg+PCQ_WR_PTR);
/* Exception Queue */
i = (EXCEPTION_Q * iadev->memSize) & 0 xffff;
writew(i, iadev->reass_reg+EXCP_Q_ST_ADR);
writew(i + NUM_RX_EXCP * sizeof (RX_ERROR_Q),
iadev->reass_reg+EXCP_Q_ED_ADR);
writew(i, iadev->reass_reg+EXCP_Q_RD_PTR);
writew(i, iadev->reass_reg+EXCP_Q_WR_PTR);
/* Load local copy of FREEQ and PCQ ptrs */
iadev->rfL.fdq_st = readw(iadev->reass_reg+FREEQ_ST_ADR) & 0 xffff;
iadev->rfL.fdq_ed = readw(iadev->reass_reg+FREEQ_ED_ADR) & 0 xffff ;
iadev->rfL.fdq_rd = readw(iadev->reass_reg+FREEQ_RD_PTR) & 0 xffff;
iadev->rfL.fdq_wr = readw(iadev->reass_reg+FREEQ_WR_PTR) & 0 xffff;
iadev->rfL.pcq_st = readw(iadev->reass_reg+PCQ_ST_ADR) & 0 xffff;
iadev->rfL.pcq_ed = readw(iadev->reass_reg+PCQ_ED_ADR) & 0 xffff;
iadev->rfL.pcq_rd = readw(iadev->reass_reg+PCQ_RD_PTR) & 0 xffff;
iadev->rfL.pcq_wr = readw(iadev->reass_reg+PCQ_WR_PTR) & 0 xffff;
IF_INIT(printk("INIT:pcq_st:0x%x pcq_ed:0x%x pcq_rd:0x%x pcq_wr:0x%x" ,
iadev->rfL.pcq_st, iadev->rfL.pcq_ed, iadev->rfL.pcq_rd,
iadev->rfL.pcq_wr);)
/* just for check - no VP TBL */
/* VP Table */
/* writew(0x0b80, iadev->reass_reg+VP_LKUP_BASE); */
/* initialize VP Table for invalid VPIs
- I guess we can write all 1 s or 0 x000f in the entire memory
space or something similar .
*/
/* This seems to work and looks right to me too !!! */
i = REASS_TABLE * iadev->memSize;
writew((i >> 3 ), iadev->reass_reg+REASS_TABLE_BASE);
/* initialize Reassembly table to I don't know what ???? */
reass_table = (u16 *)(iadev->reass_ram+i);
j = REASS_TABLE_SZ * iadev->memSize;
for (i=0 ; i < j; i++)
*reass_table++ = NO_AAL5_PKT;
i = 8 *1024 ;
vcsize_sel = 0 ;
while (i != iadev->num_vc) {
i /= 2 ;
vcsize_sel++;
}
i = RX_VC_TABLE * iadev->memSize;
writew(((i>>3 ) & 0 xfff8) | vcsize_sel, iadev->reass_reg+VC_LKUP_BASE);
vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);
j = RX_VC_TABLE_SZ * iadev->memSize;
for (i = 0 ; i < j; i++)
{
/* shift the reassembly pointer by 3 + lower 3 bits of
vc_lkup_base register ( = 3 for 1 K VCs ) and the last byte
is those low 3 bits .
Shall program this later .
*/
*vc_table = (i << 6 ) | 15 ; /* for invalid VCI */
vc_table++;
}
/* ABR VC table */
i = ABR_VC_TABLE * iadev->memSize;
writew(i >> 3 , iadev->reass_reg+ABR_LKUP_BASE);
i = ABR_VC_TABLE * iadev->memSize;
abr_vc_table = (struct abr_vc_table *)(iadev->reass_ram+i);
j = REASS_TABLE_SZ * iadev->memSize;
memset ((char *)abr_vc_table, 0 , j * sizeof (*abr_vc_table));
for (i = 0 ; i < j; i++) {
abr_vc_table->rdf = 0 x0003;
abr_vc_table->air = 0 x5eb1;
abr_vc_table++;
}
/* Initialize other registers */
/* VP Filter Register set for VC Reassembly only */
writew(0 xff00, iadev->reass_reg+VP_FILTER);
writew(0 , iadev->reass_reg+XTRA_RM_OFFSET);
writew(0 x1, iadev->reass_reg+PROTOCOL_ID);
/* Packet Timeout Count related Registers :
Set packet timeout to occur in about 3 seconds
Set Packet Aging Interval count register to overflow in about 4 us
*/
writew(0 xF6F8, iadev->reass_reg+PKT_TM_CNT );
i = (j >> 6 ) & 0 xFF;
j += 2 * (j - 1 );
i |= ((j << 2 ) & 0 xFF00);
writew(i, iadev->reass_reg+TMOUT_RANGE);
/* initiate the desc_tble */
for (i=0 ; i<iadev->num_tx_desc;i++)
iadev->desc_tbl[i].timestamp = 0 ;
/* to clear the interrupt status register - read it */
readw(iadev->reass_reg+REASS_INTR_STATUS_REG);
/* Mask Register - clear it */
writew(~(RX_FREEQ_EMPT|RX_PKT_RCVD), iadev->reass_reg+REASS_MASK_REG);
skb_queue_head_init(&iadev->rx_dma_q);
iadev->rx_free_desc_qhead = NULL;
iadev->rx_open = kcalloc(iadev->num_vc, sizeof (void *), GFP_KERNEL);
if (!iadev->rx_open) {
printk(KERN_ERR DEV_LABEL "itf %d couldn't get free page\n" ,
dev->number);
goto err_free_dle;
}
iadev->rxing = 1 ;
iadev->rx_pkt_cnt = 0 ;
/* Mode Register */
writew(R_ONLINE, iadev->reass_reg+MODE_REG);
return 0 ;
err_free_dle:
dma_free_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
iadev->rx_dle_dma);
err_out:
return -ENOMEM;
}
/*
The memory map suggested in appendix A and the coding for it .
Keeping it around just in case we change our mind later .
Buffer descr 0 x0000 ( 128 - 4 K )
UBR sched 0 x1000 ( 1 K - 4 K )
UBR Wait q 0 x2000 ( 1 K - 4 K )
Commn queues 0 x3000 Packet Ready , Trasmit comp ( 0 x3100 )
( 128 - 256 ) each
extended VC 0 x4000 ( 1 K - 8 K )
ABR sched 0 x6000 and ABR wait queue ( 1 K - 2 K ) each
CBR sched 0 x7000 ( as needed )
VC table 0 x8000 ( 1 K - 32 K )
*/
static void tx_intr(struct atm_dev *dev)
{
IADEV *iadev;
unsigned short status;
unsigned long flags;
iadev = INPH_IA_DEV(dev);
status = readl(iadev->seg_reg+SEG_INTR_STATUS_REG);
if (status & TRANSMIT_DONE){
IF_EVENT(printk("Transmit Done Intr logic run\n" );)
spin_lock_irqsave(&iadev->tx_lock, flags);
ia_tx_poll(iadev);
spin_unlock_irqrestore(&iadev->tx_lock, flags);
writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
if (iadev->close_pending)
wake_up(&iadev->close_wait);
}
if (status & TCQ_NOT_EMPTY)
{
IF_EVENT(printk("TCQ_NOT_EMPTY int received\n" );)
}
}
static void tx_dle_intr(struct atm_dev *dev)
{
IADEV *iadev;
struct dle *dle, *cur_dle;
struct sk_buff *skb;
struct atm_vcc *vcc;
struct ia_vcc *iavcc;
u_int dle_lp;
unsigned long flags;
iadev = INPH_IA_DEV(dev);
spin_lock_irqsave(&iadev->tx_lock, flags);
dle = iadev->tx_dle_q.read;
dle_lp = readl(iadev->dma+IPHASE5575_TX_LIST_ADDR) &
(sizeof (struct dle)*DLE_ENTRIES - 1 );
cur_dle = (struct dle*)(iadev->tx_dle_q.start + (dle_lp >> 4 ));
while (dle != cur_dle)
{
/* free the DMAed skb */
skb = skb_dequeue(&iadev->tx_dma_q);
if (!skb) break ;
/* Revenge of the 2 dle (skb + trailer) used in ia_pkt_tx() */
if (!((dle - iadev->tx_dle_q.start)%(2 *sizeof (struct dle)))) {
dma_unmap_single(&iadev->pci->dev, dle->sys_pkt_addr, skb->len,
DMA_TO_DEVICE);
}
vcc = ATM_SKB(skb)->vcc;
if (!vcc) {
printk("tx_dle_intr: vcc is null\n" );
spin_unlock_irqrestore(&iadev->tx_lock, flags);
dev_kfree_skb_any(skb);
return ;
}
iavcc = INPH_IA_VCC(vcc);
if (!iavcc) {
printk("tx_dle_intr: iavcc is null\n" );
spin_unlock_irqrestore(&iadev->tx_lock, flags);
dev_kfree_skb_any(skb);
return ;
}
if (vcc->qos.txtp.pcr >= iadev->rate_limit) {
if ((vcc->pop) && (skb->len != 0 ))
{
vcc->pop(vcc, skb);
}
else {
dev_kfree_skb_any(skb);
}
}
else { /* Hold the rate-limited skb for flow control */
IA_SKB_STATE(skb) |= IA_DLED;
skb_queue_tail(&iavcc->txing_skb, skb);
}
IF_EVENT(printk("tx_dle_intr: enque skb = 0x%p \n" , skb);)
if (++dle == iadev->tx_dle_q.end)
dle = iadev->tx_dle_q.start;
}
iadev->tx_dle_q.read = dle;
spin_unlock_irqrestore(&iadev->tx_lock, flags);
}
static int open_tx(struct atm_vcc *vcc)
{
struct ia_vcc *ia_vcc;
IADEV *iadev;
struct main_vc *vc;
struct ext_vc *evc;
int ret;
IF_EVENT(printk("iadev: open_tx entered vcc->vci = %d\n" , vcc->vci);)
if (vcc->qos.txtp.traffic_class == ATM_NONE) return 0 ;
iadev = INPH_IA_DEV(vcc->dev);
if (iadev->phy_type & FE_25MBIT_PHY) {
if (vcc->qos.txtp.traffic_class == ATM_ABR) {
printk("IA: ABR not support\n" );
return -EINVAL;
}
if (vcc->qos.txtp.traffic_class == ATM_CBR) {
printk("IA: CBR not support\n" );
return -EINVAL;
}
}
ia_vcc = INPH_IA_VCC(vcc);
memset((caddr_t)ia_vcc, 0 , sizeof (*ia_vcc));
if (vcc->qos.txtp.max_sdu >
(iadev->tx_buf_sz - sizeof (struct cpcs_trailer))){
printk("IA: SDU size over (%d) the configured SDU size %d\n" ,
vcc->qos.txtp.max_sdu,iadev->tx_buf_sz);
vcc->dev_data = NULL;
kfree(ia_vcc);
return -EINVAL;
}
ia_vcc->vc_desc_cnt = 0 ;
ia_vcc->txing = 1 ;
/* find pcr */
if (vcc->qos.txtp.max_pcr == ATM_MAX_PCR)
vcc->qos.txtp.pcr = iadev->LineRate;
else if ((vcc->qos.txtp.max_pcr == 0 )&&( vcc->qos.txtp.pcr <= 0 ))
vcc->qos.txtp.pcr = iadev->LineRate;
else if ((vcc->qos.txtp.max_pcr > vcc->qos.txtp.pcr) && (vcc->qos.txtp.max_pcr> 0 ))
vcc->qos.txtp.pcr = vcc->qos.txtp.max_pcr;
if (vcc->qos.txtp.pcr > iadev->LineRate)
vcc->qos.txtp.pcr = iadev->LineRate;
ia_vcc->pcr = vcc->qos.txtp.pcr;
if (ia_vcc->pcr > (iadev->LineRate / 6 ) ) ia_vcc->ltimeout = HZ / 10 ;
else if (ia_vcc->pcr > (iadev->LineRate / 130 )) ia_vcc->ltimeout = HZ;
else if (ia_vcc->pcr <= 170 ) ia_vcc->ltimeout = 16 * HZ;
else ia_vcc->ltimeout = 2700 * HZ / ia_vcc->pcr;
if (ia_vcc->pcr < iadev->rate_limit)
skb_queue_head_init (&ia_vcc->txing_skb);
if (ia_vcc->pcr < iadev->rate_limit) {
struct sock *sk = sk_atm(vcc);
if (vcc->qos.txtp.max_sdu != 0 ) {
if (ia_vcc->pcr > 60000 )
sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 5 ;
else if (ia_vcc->pcr > 2000 )
sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 4 ;
else
sk->sk_sndbuf = vcc->qos.txtp.max_sdu * 3 ;
}
else
sk->sk_sndbuf = 24576 ;
}
vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;
evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;
vc += vcc->vci;
evc += vcc->vci;
memset((caddr_t)vc, 0 , sizeof (*vc));
memset((caddr_t)evc, 0 , sizeof (*evc));
/* store the most significant 4 bits of vci as the last 4 bits
of first part of atm header .
store the last 12 bits of vci as first 12 bits of the second
part of the atm header .
*/
evc->atm_hdr1 = (vcc->vci >> 12 ) & 0 x000f;
evc->atm_hdr2 = (vcc->vci & 0 x0fff) << 4 ;
/* check the following for different traffic classes */
if (vcc->qos.txtp.traffic_class == ATM_UBR)
{
vc->type = UBR;
vc->status = CRC_APPEND;
vc->acr = cellrate_to_float(iadev->LineRate);
if (vcc->qos.txtp.pcr > 0 )
vc->acr = cellrate_to_float(vcc->qos.txtp.pcr);
IF_UBR(printk("UBR: txtp.pcr = 0x%x f_rate = 0x%x\n" ,
vcc->qos.txtp.max_pcr,vc->acr);)
}
else if (vcc->qos.txtp.traffic_class == ATM_ABR)
{ srv_cls_param_t srv_p;
IF_ABR(printk("Tx ABR VCC\n" );)
init_abr_vc(iadev, &srv_p);
if (vcc->qos.txtp.pcr > 0 )
srv_p.pcr = vcc->qos.txtp.pcr;
if (vcc->qos.txtp.min_pcr > 0 ) {
int tmpsum = iadev->sum_mcr+iadev->sum_cbr+vcc->qos.txtp.min_pcr;
if (tmpsum > iadev->LineRate)
return -EBUSY;
srv_p.mcr = vcc->qos.txtp.min_pcr;
iadev->sum_mcr += vcc->qos.txtp.min_pcr;
}
else srv_p.mcr = 0 ;
if (vcc->qos.txtp.icr)
srv_p.icr = vcc->qos.txtp.icr;
if (vcc->qos.txtp.tbe)
srv_p.tbe = vcc->qos.txtp.tbe;
if (vcc->qos.txtp.frtt)
srv_p.frtt = vcc->qos.txtp.frtt;
if (vcc->qos.txtp.rif)
srv_p.rif = vcc->qos.txtp.rif;
if (vcc->qos.txtp.rdf)
srv_p.rdf = vcc->qos.txtp.rdf;
if (vcc->qos.txtp.nrm_pres)
srv_p.nrm = vcc->qos.txtp.nrm;
if (vcc->qos.txtp.trm_pres)
srv_p.trm = vcc->qos.txtp.trm;
if (vcc->qos.txtp.adtf_pres)
srv_p.adtf = vcc->qos.txtp.adtf;
if (vcc->qos.txtp.cdf_pres)
srv_p.cdf = vcc->qos.txtp.cdf;
if (srv_p.icr > srv_p.pcr)
srv_p.icr = srv_p.pcr;
IF_ABR(printk("ABR:vcc->qos.txtp.max_pcr = %d mcr = %d\n" ,
srv_p.pcr, srv_p.mcr);)
ia_open_abr_vc(iadev, &srv_p, vcc, 1 );
} else if (vcc->qos.txtp.traffic_class == ATM_CBR) {
if (iadev->phy_type & FE_25MBIT_PHY) {
printk("IA: CBR not support\n" );
return -EINVAL;
}
if (vcc->qos.txtp.max_pcr > iadev->LineRate) {
IF_CBR(printk("PCR is not available\n" );)
return -1 ;
}
vc->type = CBR;
vc->status = CRC_APPEND;
if ((ret = ia_cbr_setup (iadev, vcc)) < 0 ) {
return ret;
}
} else {
printk("iadev: Non UBR, ABR and CBR traffic not supported\n" );
}
iadev->testTable[vcc->vci]->vc_status |= VC_ACTIVE;
IF_EVENT(printk("ia open_tx returning \n" );)
return 0 ;
}
static int tx_init(struct atm_dev *dev)
{
IADEV *iadev;
struct tx_buf_desc *buf_desc_ptr;
unsigned int tx_pkt_start;
void *dle_addr;
int i;
u_short tcq_st_adr;
u_short *tcq_start;
u_short prq_st_adr;
u_short *prq_start;
struct main_vc *vc;
struct ext_vc *evc;
u_short tmp16;
u32 vcsize_sel;
iadev = INPH_IA_DEV(dev);
spin_lock_init(&iadev->tx_lock);
IF_INIT(printk("Tx MASK REG: 0x%0x\n" ,
readw(iadev->seg_reg+SEG_MASK_REG));)
/* Allocate 4k (boundary aligned) bytes */
dle_addr = dma_alloc_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE,
&iadev->tx_dle_dma, GFP_KERNEL);
if (!dle_addr) {
printk(KERN_ERR DEV_LABEL "can't allocate DLEs\n" );
goto err_out;
}
iadev->tx_dle_q.start = (struct dle*)dle_addr;
iadev->tx_dle_q.read = iadev->tx_dle_q.start;
iadev->tx_dle_q.write = iadev->tx_dle_q.start;
iadev->tx_dle_q.end = (struct dle*)((unsigned long )dle_addr+sizeof (struct dle)*DLE_ENTRIES);
/* write the upper 20 bits of the start address to tx list address register */
writel(iadev->tx_dle_dma & 0 xfffff000,
iadev->dma + IPHASE5575_TX_LIST_ADDR);
writew(0 xffff, iadev->seg_reg+SEG_MASK_REG);
writew(0 , iadev->seg_reg+MODE_REG_0);
writew(RESET_SEG, iadev->seg_reg+SEG_COMMAND_REG);
iadev->MAIN_VC_TABLE_ADDR = iadev->seg_ram+MAIN_VC_TABLE*iadev->memSize;
iadev->EXT_VC_TABLE_ADDR = iadev->seg_ram+EXT_VC_TABLE*iadev->memSize;
iadev->ABR_SCHED_TABLE_ADDR=iadev->seg_ram+ABR_SCHED_TABLE*iadev->memSize;
/*
Transmit side control memory map
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Buffer descr 0 x0000 ( 128 - 4 K )
Commn queues 0 x1000 Transmit comp , Packet ready ( 0 x1400 )
( 512 - 1 K ) each
TCQ - 4 K , PRQ - 5 K
CBR Table 0 x1800 ( as needed ) - 6 K
UBR Table 0 x3000 ( 1 K - 4 K ) - 12 K
UBR Wait queue 0 x4000 ( 1 K - 4 K ) - 16 K
ABR sched 0 x5000 and ABR wait queue ( 1 K - 2 K ) each
ABR Tbl - 20 K , ABR Wq - 22 K
extended VC 0 x6000 ( 1 K - 8 K ) - 24 K
VC Table 0 x8000 ( 1 K - 32 K ) - 32 K
Between 0 x2000 ( 8 K ) and 0 x3000 ( 12 K ) there is 4 K space left for VBR Tbl
and Wait q , which can be allotted later .
*/
/* Buffer Descriptor Table Base address */
writew(TX_DESC_BASE, iadev->seg_reg+SEG_DESC_BASE);
/* initialize each entry in the buffer descriptor table */
buf_desc_ptr =(struct tx_buf_desc *)(iadev->seg_ram+TX_DESC_BASE);
memset((caddr_t)buf_desc_ptr, 0 , sizeof (*buf_desc_ptr));
buf_desc_ptr++;
tx_pkt_start = TX_PACKET_RAM;
for (i=1 ; i<=iadev->num_tx_desc; i++)
{
memset((caddr_t)buf_desc_ptr, 0 , sizeof (*buf_desc_ptr));
buf_desc_ptr->desc_mode = AAL5;
buf_desc_ptr->buf_start_hi = tx_pkt_start >> 16 ;
buf_desc_ptr->buf_start_lo = tx_pkt_start & 0 x0000ffff;
buf_desc_ptr++;
tx_pkt_start += iadev->tx_buf_sz;
}
iadev->tx_buf = kmalloc_array(iadev->num_tx_desc,
sizeof (*iadev->tx_buf),
GFP_KERNEL);
if (!iadev->tx_buf) {
printk(KERN_ERR DEV_LABEL " couldn't get mem\n" );
goto err_free_dle;
}
for (i= 0 ; i< iadev->num_tx_desc; i++)
{
struct cpcs_trailer *cpcs;
cpcs = kmalloc(sizeof (*cpcs), GFP_KERNEL|GFP_DMA);
if (!cpcs) {
printk(KERN_ERR DEV_LABEL " couldn't get freepage\n" );
goto err_free_tx_bufs;
}
iadev->tx_buf[i].cpcs = cpcs;
iadev->tx_buf[i].dma_addr = dma_map_single(&iadev->pci->dev,
cpcs,
sizeof (*cpcs),
DMA_TO_DEVICE);
}
iadev->desc_tbl = kmalloc_array(iadev->num_tx_desc,
sizeof (*iadev->desc_tbl),
GFP_KERNEL);
if (!iadev->desc_tbl) {
printk(KERN_ERR DEV_LABEL " couldn't get mem\n" );
goto err_free_all_tx_bufs;
}
/* Communication Queues base address */
i = TX_COMP_Q * iadev->memSize;
writew(i >> 16 , iadev->seg_reg+SEG_QUEUE_BASE);
/* Transmit Complete Queue */
writew(i, iadev->seg_reg+TCQ_ST_ADR);
writew(i, iadev->seg_reg+TCQ_RD_PTR);
writew(i+iadev->num_tx_desc*sizeof (u_short),iadev->seg_reg+TCQ_WR_PTR);
iadev->host_tcq_wr = i + iadev->num_tx_desc*sizeof (u_short);
writew(i+2 * iadev->num_tx_desc * sizeof (u_short),
iadev->seg_reg+TCQ_ED_ADR);
/* Fill the TCQ with all the free descriptors. */
tcq_st_adr = readw(iadev->seg_reg+TCQ_ST_ADR);
tcq_start = (u_short *)(iadev->seg_ram+tcq_st_adr);
for (i=1 ; i<=iadev->num_tx_desc; i++)
{
*tcq_start = (u_short)i;
tcq_start++;
}
/* Packet Ready Queue */
i = PKT_RDY_Q * iadev->memSize;
writew(i, iadev->seg_reg+PRQ_ST_ADR);
writew(i+2 * iadev->num_tx_desc * sizeof (u_short),
iadev->seg_reg+PRQ_ED_ADR);
writew(i, iadev->seg_reg+PRQ_RD_PTR);
writew(i, iadev->seg_reg+PRQ_WR_PTR);
/* Load local copy of PRQ and TCQ ptrs */
iadev->ffL.prq_st = readw(iadev->seg_reg+PRQ_ST_ADR) & 0 xffff;
iadev->ffL.prq_ed = readw(iadev->seg_reg+PRQ_ED_ADR) & 0 xffff;
iadev->ffL.prq_wr = readw(iadev->seg_reg+PRQ_WR_PTR) & 0 xffff;
iadev->ffL.tcq_st = readw(iadev->seg_reg+TCQ_ST_ADR) & 0 xffff;
iadev->ffL.tcq_ed = readw(iadev->seg_reg+TCQ_ED_ADR) & 0 xffff;
iadev->ffL.tcq_rd = readw(iadev->seg_reg+TCQ_RD_PTR) & 0 xffff;
/* Just for safety initializing the queue to have desc 1 always */
/* Fill the PRQ with all the free descriptors. */
prq_st_adr = readw(iadev->seg_reg+PRQ_ST_ADR);
prq_start = (u_short *)(iadev->seg_ram+prq_st_adr);
for (i=1 ; i<=iadev->num_tx_desc; i++)
{
*prq_start = (u_short)0 ; /* desc 1 in all entries */
prq_start++;
}
/* CBR Table */
IF_INIT(printk("Start CBR Init\n" );)
#if 1 /* for 1K VC board, CBR_PTR_BASE is 0 */
writew(0 ,iadev->seg_reg+CBR_PTR_BASE);
#else /* Charlie's logic is wrong ? */
tmp16 = (iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize)>>17 ;
IF_INIT(printk("cbr_ptr_base = 0x%x " , tmp16);)
writew(tmp16,iadev->seg_reg+CBR_PTR_BASE);
#endif
IF_INIT(printk("value in register = 0x%x\n" ,
readw(iadev->seg_reg+CBR_PTR_BASE));)
tmp16 = (CBR_SCHED_TABLE*iadev->memSize) >> 1 ;
writew(tmp16, iadev->seg_reg+CBR_TAB_BEG);
IF_INIT(printk("cbr_tab_beg = 0x%x in reg = 0x%x \n" , tmp16,
readw(iadev->seg_reg+CBR_TAB_BEG));)
writew(tmp16, iadev->seg_reg+CBR_TAB_END+1 ); // CBR_PTR;
tmp16 = (CBR_SCHED_TABLE*iadev->memSize + iadev->num_vc*6 - 2 ) >> 1 ;
writew(tmp16, iadev->seg_reg+CBR_TAB_END);
IF_INIT(printk("iadev->seg_reg = 0x%p CBR_PTR_BASE = 0x%x\n" ,
iadev->seg_reg, readw(iadev->seg_reg+CBR_PTR_BASE));)
IF_INIT(printk("CBR_TAB_BEG = 0x%x, CBR_TAB_END = 0x%x, CBR_PTR = 0x%x\n" ,
readw(iadev->seg_reg+CBR_TAB_BEG), readw(iadev->seg_reg+CBR_TAB_END),
readw(iadev->seg_reg+CBR_TAB_END+1 ));)
/* Initialize the CBR Schedualing Table */
memset_io(iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize,
0 , iadev->num_vc*6 );
iadev->CbrRemEntries = iadev->CbrTotEntries = iadev->num_vc*3 ;
iadev->CbrEntryPt = 0 ;
iadev->Granularity = MAX_ATM_155 / iadev->CbrTotEntries;
iadev->NumEnabledCBR = 0 ;
/* UBR scheduling Table and wait queue */
/* initialize all bytes of UBR scheduler table and wait queue to 0
- SCHEDSZ is 1 K ( # of entries ) .
- UBR Table size is 4 K
- UBR wait queue is 4 K
since the table and wait queues are contiguous , all the bytes
can be initialized by one memeset .
*/
vcsize_sel = 0 ;
i = 8 *1024 ;
while (i != iadev->num_vc) {
i /= 2 ;
vcsize_sel++;
}
i = MAIN_VC_TABLE * iadev->memSize;
writew(vcsize_sel | ((i >> 8 ) & 0 xfff8),iadev->seg_reg+VCT_BASE);
i = EXT_VC_TABLE * iadev->memSize;
writew((i >> 8 ) & 0 xfffe, iadev->seg_reg+VCTE_BASE);
i = UBR_SCHED_TABLE * iadev->memSize;
writew((i & 0 xffff) >> 11 , iadev->seg_reg+UBR_SBPTR_BASE);
i = UBR_WAIT_Q * iadev->memSize;
writew((i >> 7 ) & 0 xffff, iadev->seg_reg+UBRWQ_BASE);
memset((caddr_t)(iadev->seg_ram+UBR_SCHED_TABLE*iadev->memSize),
0 , iadev->num_vc*8 );
/* ABR scheduling Table(0x5000-0x57ff) and wait queue(0x5800-0x5fff)*/
/* initialize all bytes of ABR scheduler table and wait queue to 0
- SCHEDSZ is 1 K ( # of entries ) .
- ABR Table size is 2 K
- ABR wait queue is 2 K
since the table and wait queues are contiguous , all the bytes
can be initialized by one memeset .
*/
i = ABR_SCHED_TABLE * iadev->memSize;
writew((i >> 11 ) & 0 xffff, iadev->seg_reg+ABR_SBPTR_BASE);
i = ABR_WAIT_Q * iadev->memSize;
writew((i >> 7 ) & 0 xffff, iadev->seg_reg+ABRWQ_BASE);
i = ABR_SCHED_TABLE*iadev->memSize;
memset((caddr_t)(iadev->seg_ram+i), 0 , iadev->num_vc*4 );
vc = (struct main_vc *)iadev->MAIN_VC_TABLE_ADDR;
evc = (struct ext_vc *)iadev->EXT_VC_TABLE_ADDR;
iadev->testTable = kmalloc_array(iadev->num_vc,
sizeof (*iadev->testTable),
GFP_KERNEL);
if (!iadev->testTable) {
printk("Get freepage failed\n" );
goto err_free_desc_tbl;
}
for (i=0 ; i<iadev->num_vc; i++)
{
memset((caddr_t)vc, 0 , sizeof (*vc));
memset((caddr_t)evc, 0 , sizeof (*evc));
iadev->testTable[i] = kmalloc(sizeof (struct testTable_t),
GFP_KERNEL);
if (!iadev->testTable[i])
goto err_free_test_tables;
iadev->testTable[i]->lastTime = 0 ;
iadev->testTable[i]->fract = 0 ;
iadev->testTable[i]->vc_status = VC_UBR;
vc++;
evc++;
}
/* Other Initialization */
/* Max Rate Register */
if (iadev->phy_type & FE_25MBIT_PHY) {
writew(RATE25, iadev->seg_reg+MAXRATE);
writew((UBR_EN | (0 x23 << 2 )), iadev->seg_reg+STPARMS);
}
else {
writew(cellrate_to_float(iadev->LineRate),iadev->seg_reg+MAXRATE);
writew((UBR_EN | ABR_EN | (0 x23 << 2 )), iadev->seg_reg+STPARMS);
}
/* Set Idle Header Reigisters to be sure */
writew(0 , iadev->seg_reg+IDLEHEADHI);
writew(0 , iadev->seg_reg+IDLEHEADLO);
/* Program ABR UBR Priority Register as PRI_ABR_UBR_EQUAL */
writew(0 xaa00, iadev->seg_reg+ABRUBR_ARB);
iadev->close_pending = 0 ;
init_waitqueue_head(&iadev->close_wait);
init_waitqueue_head(&iadev->timeout_wait);
skb_queue_head_init(&iadev->tx_dma_q);
ia_init_rtn_q(&iadev->tx_return_q);
/* RM Cell Protocol ID and Message Type */
writew(RM_TYPE_4_0, iadev->seg_reg+RM_TYPE);
skb_queue_head_init (&iadev->tx_backlog);
/* Mode Register 1 */
writew(MODE_REG_1_VAL, iadev->seg_reg+MODE_REG_1);
/* Mode Register 0 */
writew(T_ONLINE, iadev->seg_reg+MODE_REG_0);
/* Interrupt Status Register - read to clear */
readw(iadev->seg_reg+SEG_INTR_STATUS_REG);
/* Interrupt Mask Reg- don't mask TCQ_NOT_EMPTY interrupt generation */
writew(~(TRANSMIT_DONE | TCQ_NOT_EMPTY), iadev->seg_reg+SEG_MASK_REG);
writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
iadev->tx_pkt_cnt = 0 ;
iadev->rate_limit = iadev->LineRate / 3 ;
return 0 ;
err_free_test_tables:
while (--i >= 0 )
kfree(iadev->testTable[i]);
kfree(iadev->testTable);
err_free_desc_tbl:
kfree(iadev->desc_tbl);
err_free_all_tx_bufs:
i = iadev->num_tx_desc;
err_free_tx_bufs:
while (--i >= 0 ) {
struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
dma_unmap_single(&iadev->pci->dev, desc->dma_addr,
sizeof (*desc->cpcs), DMA_TO_DEVICE);
kfree(desc->cpcs);
}
kfree(iadev->tx_buf);
err_free_dle:
dma_free_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
iadev->tx_dle_dma);
err_out:
return -ENOMEM;
}
static irqreturn_t ia_int(int irq, void *dev_id)
{
struct atm_dev *dev;
IADEV *iadev;
unsigned int status;
int handled = 0 ;
dev = dev_id;
iadev = INPH_IA_DEV(dev);
while ( (status = readl(iadev->reg+IPHASE5575_BUS_STATUS_REG) & 0 x7f))
{
handled = 1 ;
IF_EVENT(printk("ia_int: status = 0x%x\n" , status);)
if (status & STAT_REASSINT)
{
/* do something */
IF_EVENT(printk("REASSINT Bus status reg: %08x\n" , status);)
rx_intr(dev);
}
if (status & STAT_DLERINT)
{
/* Clear this bit by writing a 1 to it. */
writel(STAT_DLERINT, iadev->reg + IPHASE5575_BUS_STATUS_REG);
rx_dle_intr(dev);
}
if (status & STAT_SEGINT)
{
/* do something */
IF_EVENT(printk("IA: tx_intr \n" );)
tx_intr(dev);
}
if (status & STAT_DLETINT)
{
writel(STAT_DLETINT, iadev->reg + IPHASE5575_BUS_STATUS_REG);
tx_dle_intr(dev);
}
if (status & (STAT_FEINT | STAT_ERRINT | STAT_MARKINT))
{
if (status & STAT_FEINT)
ia_frontend_intr(iadev);
}
}
return IRQ_RETVAL(handled);
}
/*----------------------------- entries --------------------------------*/
static int get_esi(struct atm_dev *dev)
{
IADEV *iadev;
int i;
u32 mac1;
u16 mac2;
iadev = INPH_IA_DEV(dev);
mac1 = cpu_to_be32(le32_to_cpu(readl(
iadev->reg+IPHASE5575_MAC1)));
mac2 = cpu_to_be16(le16_to_cpu(readl(iadev->reg+IPHASE5575_MAC2)));
IF_INIT(printk("ESI: 0x%08x%04x\n" , mac1, mac2);)
for (i=0 ; i<MAC1_LEN; i++)
dev->esi[i] = mac1 >>(8 *(MAC1_LEN-1 -i));
for (i=0 ; i<MAC2_LEN; i++)
dev->esi[i+MAC1_LEN] = mac2 >>(8 *(MAC2_LEN - 1 -i));
return 0 ;
}
static int reset_sar(struct atm_dev *dev)
{
IADEV *iadev;
int i, error;
unsigned int pci[64 ];
iadev = INPH_IA_DEV(dev);
for (i = 0 ; i < 64 ; i++) {
error = pci_read_config_dword(iadev->pci, i * 4 , &pci[i]);
if (error != PCIBIOS_SUCCESSFUL)
return error;
}
writel(0 , iadev->reg+IPHASE5575_EXT_RESET);
for (i = 0 ; i < 64 ; i++) {
error = pci_write_config_dword(iadev->pci, i * 4 , pci[i]);
if (error != PCIBIOS_SUCCESSFUL)
return error;
}
udelay(5 );
return 0 ;
}
static int ia_init(struct atm_dev *dev)
{
IADEV *iadev;
unsigned long real_base;
void __iomem *base;
unsigned short command;
int error, i;
/* The device has been identified and registered. Now we read
necessary configuration info like memory base address ,
interrupt number etc */
IF_INIT(printk(">ia_init\n" );)
dev->ci_range.vpi_bits = 0 ;
dev->ci_range.vci_bits = NR_VCI_LD;
iadev = INPH_IA_DEV(dev);
real_base = pci_resource_start (iadev->pci, 0 );
iadev->irq = iadev->pci->irq;
error = pci_read_config_word(iadev->pci, PCI_COMMAND, &command);
if (error) {
printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%x\n" ,
dev->number,error);
return -EINVAL;
}
IF_INIT(printk(DEV_LABEL "(itf %d): rev.%d,realbase=0x%lx,irq=%d\n" ,
dev->number, iadev->pci->revision, real_base, iadev->irq);)
/* find mapping size of board */
iadev->pci_map_size = pci_resource_len(iadev->pci, 0 );
if (iadev->pci_map_size == 0 x100000){
iadev->num_vc = 4096 ;
dev->ci_range.vci_bits = NR_VCI_4K_LD;
iadev->memSize = 4 ;
}
else if (iadev->pci_map_size == 0 x40000) {
iadev->num_vc = 1024 ;
iadev->memSize = 1 ;
}
else {
printk("Unknown pci_map_size = 0x%x\n" , iadev->pci_map_size);
return -EINVAL;
}
IF_INIT(printk (DEV_LABEL "map size: %i\n" , iadev->pci_map_size);)
/* enable bus mastering */
pci_set_master(iadev->pci);
/*
* Delay at least 1 us before doing any mem accesses ( how ' bout 10 ? )
*/
udelay(10 );
/* mapping the physical address to a virtual address in address space */
base = ioremap(real_base,iadev->pci_map_size); /* ioremap is not resolved ??? */
if (!base)
{
printk(DEV_LABEL " (itf %d): can't set up page mapping\n" ,
dev->number);
return -ENOMEM;
}
IF_INIT(printk(DEV_LABEL " (itf %d): rev.%d,base=%p,irq=%d\n" ,
dev->number, iadev->pci->revision, base, iadev->irq);)
/* filling the iphase dev structure */
iadev->mem = iadev->pci_map_size /2 ;
iadev->real_base = real_base;
iadev->base = base;
/* Bus Interface Control Registers */
iadev->reg = base + REG_BASE;
/* Segmentation Control Registers */
iadev->seg_reg = base + SEG_BASE;
/* Reassembly Control Registers */
iadev->reass_reg = base + REASS_BASE;
/* Front end/ DMA control registers */
iadev->phy = base + PHY_BASE;
iadev->dma = base + PHY_BASE;
/* RAM - Segmentation RAm and Reassembly RAM */
iadev->ram = base + ACTUAL_RAM_BASE;
iadev->seg_ram = base + ACTUAL_SEG_RAM_BASE;
iadev->reass_ram = base + ACTUAL_REASS_RAM_BASE;
/* lets print out the above */
IF_INIT(printk("Base addrs: %p %p %p \n %p %p %p %p\n" ,
iadev->reg,iadev->seg_reg,iadev->reass_reg,
iadev->phy, iadev->ram, iadev->seg_ram,
iadev->reass_ram);)
/* lets try reading the MAC address */
error = get_esi(dev);
if (error) {
iounmap(iadev->base);
return error;
}
printk("IA: " );
for (i=0 ; i < ESI_LEN; i++)
printk("%s%02X" ,i ? "-" : "" ,dev->esi[i]);
printk("\n" );
/* reset SAR */
if (reset_sar(dev)) {
iounmap(iadev->base);
printk("IA: reset SAR fail, please try again\n" );
return 1 ;
}
return 0 ;
}
static void ia_update_stats(IADEV *iadev) {
if (!iadev->carrier_detect)
return ;
iadev->rx_cell_cnt += readw(iadev->reass_reg+CELL_CTR0)&0 xffff;
iadev->rx_cell_cnt += (readw(iadev->reass_reg+CELL_CTR1) & 0 xffff) << 16 ;
iadev->drop_rxpkt += readw(iadev->reass_reg + DRP_PKT_CNTR ) & 0 xffff;
iadev->drop_rxcell += readw(iadev->reass_reg + ERR_CNTR) & 0 xffff;
iadev->tx_cell_cnt += readw(iadev->seg_reg + CELL_CTR_LO_AUTO)&0 xffff;
iadev->tx_cell_cnt += (readw(iadev->seg_reg+CELL_CTR_HIGH_AUTO)&0 xffff)<<16 ;
return ;
}
static void ia_led_timer(struct timer_list *unused) {
unsigned long flags;
static u_char blinking[8 ] = {0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 };
u_char i;
static u32 ctrl_reg;
for (i = 0 ; i < iadev_count; i++) {
if (ia_dev[i]) {
ctrl_reg = readl(ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
if (blinking[i] == 0 ) {
blinking[i]++;
ctrl_reg &= (~CTRL_LED);
writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
ia_update_stats(ia_dev[i]);
}
else {
blinking[i] = 0 ;
ctrl_reg |= CTRL_LED;
writel(ctrl_reg, ia_dev[i]->reg+IPHASE5575_BUS_CONTROL_REG);
spin_lock_irqsave(&ia_dev[i]->tx_lock, flags);
if (ia_dev[i]->close_pending)
wake_up(&ia_dev[i]->close_wait);
ia_tx_poll(ia_dev[i]);
spin_unlock_irqrestore(&ia_dev[i]->tx_lock, flags);
}
}
}
mod_timer(&ia_timer, jiffies + HZ / 4 );
return ;
}
static void ia_phy_put(struct atm_dev *dev, unsigned char value,
unsigned long addr)
{
writel(value, INPH_IA_DEV(dev)->phy+addr);
}
static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr)
{
return readl(INPH_IA_DEV(dev)->phy+addr);
}
static void ia_free_tx(IADEV *iadev)
{
int i;
kfree(iadev->desc_tbl);
for (i = 0 ; i < iadev->num_vc; i++)
kfree(iadev->testTable[i]);
kfree(iadev->testTable);
for (i = 0 ; i < iadev->num_tx_desc; i++) {
struct cpcs_trailer_desc *desc = iadev->tx_buf + i;
dma_unmap_single(&iadev->pci->dev, desc->dma_addr,
sizeof (*desc->cpcs), DMA_TO_DEVICE);
kfree(desc->cpcs);
}
kfree(iadev->tx_buf);
dma_free_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE, iadev->tx_dle_q.start,
iadev->tx_dle_dma);
}
static void ia_free_rx(IADEV *iadev)
{
kfree(iadev->rx_open);
dma_free_coherent(&iadev->pci->dev, DLE_TOTAL_SIZE, iadev->rx_dle_q.start,
iadev->rx_dle_dma);
}
static int ia_start(struct atm_dev *dev)
{
IADEV *iadev;
int error;
unsigned char phy;
u32 ctrl_reg;
IF_EVENT(printk(">ia_start\n" );)
iadev = INPH_IA_DEV(dev);
if (request_irq(iadev->irq, &ia_int, IRQF_SHARED, DEV_LABEL, dev)) {
printk(KERN_ERR DEV_LABEL "(itf %d): IRQ%d is already in use\n" ,
dev->number, iadev->irq);
error = -EAGAIN;
goto err_out;
}
/* @@@ should release IRQ on error */
/* enabling memory + master */
if ((error = pci_write_config_word(iadev->pci,
PCI_COMMAND,
PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER )))
{
printk(KERN_ERR DEV_LABEL "(itf %d): can't enable memory+"
"master (0x%x)\n" ,dev->number, error);
error = -EIO;
goto err_free_irq;
}
udelay(10 );
/* Maybe we should reset the front end, initialize Bus Interface Control
Registers and see. */
IF_INIT(printk("Bus ctrl reg: %08x\n" ,
readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);
ctrl_reg = (ctrl_reg & (CTRL_LED | CTRL_FE_RST))
| CTRL_B8
| CTRL_B16
| CTRL_B32
| CTRL_B48
| CTRL_B64
| CTRL_B128
| CTRL_ERRMASK
| CTRL_DLETMASK /* shud be removed l8r */
| CTRL_DLERMASK
| CTRL_SEGMASK
| CTRL_REASSMASK
| CTRL_FEMASK
| CTRL_CSPREEMPT;
writel(ctrl_reg, iadev->reg+IPHASE5575_BUS_CONTROL_REG);
IF_INIT(printk("Bus ctrl reg after initializing: %08x\n" ,
readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));
printk("Bus status reg after init: %08x\n" ,
readl(iadev->reg+IPHASE5575_BUS_STATUS_REG));)
ia_hw_type(iadev);
error = tx_init(dev);
if (error)
goto err_free_irq;
error = rx_init(dev);
if (error)
goto err_free_tx;
ctrl_reg = readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG);
writel(ctrl_reg | CTRL_FE_RST, iadev->reg+IPHASE5575_BUS_CONTROL_REG);
IF_INIT(printk("Bus ctrl reg after initializing: %08x\n" ,
readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
phy = 0 ; /* resolve compiler complaint */
IF_INIT (
if ((phy=ia_phy_get(dev,0 )) == 0 x30)
printk("IA: pm5346,rev.%d\n" ,phy&0 x0f);
else
printk("IA: utopia,rev.%0x\n" ,phy);)
if (iadev->phy_type & FE_25MBIT_PHY)
ia_mb25_init(iadev);
else if (iadev->phy_type & (FE_DS3_PHY | FE_E3_PHY))
ia_suni_pm7345_init(iadev);
else {
error = suni_init(dev);
if (error)
goto err_free_rx;
if (dev->phy->start) {
error = dev->phy->start(dev);
if (error)
goto err_free_rx;
}
/* Get iadev->carrier_detect status */
ia_frontend_intr(iadev);
}
return 0 ;
err_free_rx:
ia_free_rx(iadev);
err_free_tx:
ia_free_tx(iadev);
err_free_irq:
free_irq(iadev->irq, dev);
err_out:
return error;
}
static void ia_close(struct atm_vcc *vcc)
{
DEFINE_WAIT(wait);
u16 *vc_table;
IADEV *iadev;
struct ia_vcc *ia_vcc;
struct sk_buff *skb = NULL;
struct sk_buff_head tmp_tx_backlog, tmp_vcc_backlog;
unsigned long closetime, flags;
iadev = INPH_IA_DEV(vcc->dev);
ia_vcc = INPH_IA_VCC(vcc);
if (!ia_vcc) return ;
IF_EVENT(printk("ia_close: ia_vcc->vc_desc_cnt = %d vci = %d\n" ,
ia_vcc->vc_desc_cnt,vcc->vci);)
clear_bit(ATM_VF_READY,&vcc->flags);
skb_queue_head_init (&tmp_tx_backlog);
skb_queue_head_init (&tmp_vcc_backlog);
if (vcc->qos.txtp.traffic_class != ATM_NONE) {
iadev->close_pending++;
prepare_to_wait(&iadev->timeout_wait, &wait, TASK_UNINTERRUPTIBLE);
schedule_timeout(msecs_to_jiffies(500 ));
finish_wait(&iadev->timeout_wait, &wait);
spin_lock_irqsave(&iadev->tx_lock, flags);
while ((skb = skb_dequeue(&iadev->tx_backlog))) {
if (ATM_SKB(skb)->vcc == vcc){
if (vcc->pop) vcc->pop(vcc, skb);
else dev_kfree_skb_any(skb);
}
else
skb_queue_tail(&tmp_tx_backlog, skb);
}
while ((skb = skb_dequeue(&tmp_tx_backlog)))
skb_queue_tail(&iadev->tx_backlog, skb);
IF_EVENT(printk("IA TX Done decs_cnt = %d\n" , ia_vcc->vc_desc_cnt);)
closetime = 300000 / ia_vcc->pcr;
if (closetime == 0 )
closetime = 1 ;
spin_unlock_irqrestore(&iadev->tx_lock, flags);
wait_event_timeout(iadev->close_wait, (ia_vcc->vc_desc_cnt <= 0 ), closetime);
spin_lock_irqsave(&iadev->tx_lock, flags);
iadev->close_pending--;
iadev->testTable[vcc->vci]->lastTime = 0 ;
iadev->testTable[vcc->vci]->fract = 0 ;
iadev->testTable[vcc->vci]->vc_status = VC_UBR;
if (vcc->qos.txtp.traffic_class == ATM_ABR) {
if (vcc->qos.txtp.min_pcr > 0 )
iadev->sum_mcr -= vcc->qos.txtp.min_pcr;
}
if (vcc->qos.txtp.traffic_class == ATM_CBR) {
ia_vcc = INPH_IA_VCC(vcc);
iadev->sum_mcr -= ia_vcc->NumCbrEntry*iadev->Granularity;
ia_cbrVc_close (vcc);
}
spin_unlock_irqrestore(&iadev->tx_lock, flags);
}
if (vcc->qos.rxtp.traffic_class != ATM_NONE) {
// reset reass table
vc_table = (u16 *)(iadev->reass_ram+REASS_TABLE*iadev->memSize);
vc_table += vcc->vci;
*vc_table = NO_AAL5_PKT;
// reset vc table
vc_table = (u16 *)(iadev->reass_ram+RX_VC_TABLE*iadev->memSize);
vc_table += vcc->vci;
*vc_table = (vcc->vci << 6 ) | 15 ;
if (vcc->qos.rxtp.traffic_class == ATM_ABR) {
struct abr_vc_table __iomem *abr_vc_table =
(iadev->reass_ram+ABR_VC_TABLE*iadev->memSize);
abr_vc_table += vcc->vci;
abr_vc_table->rdf = 0 x0003;
abr_vc_table->air = 0 x5eb1;
}
// Drain the packets
rx_dle_intr(vcc->dev);
iadev->rx_open[vcc->vci] = NULL;
}
kfree(INPH_IA_VCC(vcc));
ia_vcc = NULL;
vcc->dev_data = NULL;
clear_bit(ATM_VF_ADDR,&vcc->flags);
return ;
}
static int ia_open(struct atm_vcc *vcc)
{
struct ia_vcc *ia_vcc;
int error;
if (!test_bit(ATM_VF_PARTIAL,&vcc->flags))
{
IF_EVENT(printk("ia: not partially allocated resources\n" );)
vcc->dev_data = NULL;
}
if (vcc->vci != ATM_VPI_UNSPEC && vcc->vpi != ATM_VCI_UNSPEC)
{
IF_EVENT(printk("iphase open: unspec part\n" );)
set_bit(ATM_VF_ADDR,&vcc->flags);
}
if (vcc->qos.aal != ATM_AAL5)
return -EINVAL;
IF_EVENT(printk(DEV_LABEL "(itf %d): open %d.%d\n" ,
vcc->dev->number, vcc->vpi, vcc->vci);)
/* Device dependent initialization */
ia_vcc = kmalloc(sizeof (*ia_vcc), GFP_KERNEL);
if (!ia_vcc) return -ENOMEM;
vcc->dev_data = ia_vcc;
if ((error = open_rx(vcc)))
{
IF_EVENT(printk("iadev: error in open_rx, closing\n" );)
ia_close(vcc);
return error;
}
if ((error = open_tx(vcc)))
{
IF_EVENT(printk("iadev: error in open_tx, closing\n" );)
ia_close(vcc);
return error;
}
set_bit(ATM_VF_READY,&vcc->flags);
#if 0
{
static u8 first = 1 ;
if (first) {
ia_timer.expires = jiffies + 3 *HZ;
add_timer(&ia_timer);
first = 0 ;
}
}
#endif
IF_EVENT(printk("ia open returning\n" );)
return 0 ;
}
static int ia_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flags)
{
IF_EVENT(printk(">ia_change_qos\n" );)
return 0 ;
}
static int ia_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg)
{
IA_CMDBUF ia_cmds;
IADEV *iadev;
int i, board;
u16 __user *tmps;
IF_EVENT(printk(">ia_ioctl\n" );)
if (cmd != IA_CMD) {
if (!dev->phy->ioctl) return -EINVAL;
return dev->phy->ioctl(dev,cmd,arg);
}
if (copy_from_user(&ia_cmds, arg, sizeof ia_cmds)) return -EFAULT;
board = ia_cmds.status;
if ((board < 0 ) || (board > iadev_count))
board = 0 ;
board = array_index_nospec(board, iadev_count + 1 );
iadev = ia_dev[board];
switch (ia_cmds.cmd) {
case MEMDUMP:
{
switch (ia_cmds.sub_cmd) {
case MEMDUMP_SEGREG:
if (!capable(CAP_NET_ADMIN)) return -EPERM;
tmps = (u16 __user *)ia_cmds.buf;
for (i=0 ; i<0 x80; i+=2 , tmps++)
if (put_user((u16)(readl(iadev->seg_reg+i) & 0 xffff), tmps)) return -EFAULT;
ia_cmds.status = 0 ;
ia_cmds.len = 0 x80;
break ;
case MEMDUMP_REASSREG:
if (!capable(CAP_NET_ADMIN)) return -EPERM;
tmps = (u16 __user *)ia_cmds.buf;
for (i=0 ; i<0 x80; i+=2 , tmps++)
if (put_user((u16)(readl(iadev->reass_reg+i) & 0 xffff), tmps)) return -EFAULT;
ia_cmds.status = 0 ;
ia_cmds.len = 0 x80;
break ;
case MEMDUMP_FFL:
{
ia_regs_t *regs_local;
ffredn_t *ffL;
rfredn_t *rfL;
if (!capable(CAP_NET_ADMIN)) return -EPERM;
regs_local = kmalloc(sizeof (*regs_local), GFP_KERNEL);
if (!regs_local) return -ENOMEM;
ffL = ®s_local->ffredn;
rfL = ®s_local->rfredn;
/* Copy real rfred registers into the local copy */
for (i=0 ; i<(sizeof (rfredn_t))/4 ; i++)
((u_int *)rfL)[i] = readl(iadev->reass_reg + i) & 0 xffff;
/* Copy real ffred registers into the local copy */
for (i=0 ; i<(sizeof (ffredn_t))/4 ; i++)
((u_int *)ffL)[i] = readl(iadev->seg_reg + i) & 0 xffff;
if (copy_to_user(ia_cmds.buf, regs_local,sizeof (ia_regs_t))) {
kfree(regs_local);
return -EFAULT;
}
kfree(regs_local);
printk("Board %d registers dumped\n" , board);
ia_cmds.status = 0 ;
}
break ;
case READ_REG:
{
if (!capable(CAP_NET_ADMIN)) return -EPERM;
desc_dbg(iadev);
ia_cmds.status = 0 ;
}
break ;
case 0 x6:
{
ia_cmds.status = 0 ;
printk("skb = 0x%p\n" , skb_peek(&iadev->tx_backlog));
printk("rtn_q: 0x%p\n" ,ia_deque_rtn_q(&iadev->tx_return_q));
}
break ;
case 0 x8:
{
struct k_sonet_stats *stats;
stats = &PRIV(_ia_dev[board])->sonet_stats;
printk("section_bip: %d\n" , atomic_read(&stats->section_bip));
printk("line_bip : %d\n" , atomic_read(&stats->line_bip));
printk("path_bip : %d\n" , atomic_read(&stats->path_bip));
printk("line_febe : %d\n" , atomic_read(&stats->line_febe));
printk("path_febe : %d\n" , atomic_read(&stats->path_febe));
printk("corr_hcs : %d\n" , atomic_read(&stats->corr_hcs));
printk("uncorr_hcs : %d\n" , atomic_read(&stats->uncorr_hcs));
printk("tx_cells : %d\n" , atomic_read(&stats->tx_cells));
printk("rx_cells : %d\n" , atomic_read(&stats->rx_cells));
}
ia_cmds.status = 0 ;
break ;
case 0 x9:
if (!capable(CAP_NET_ADMIN)) return -EPERM;
for (i = 1 ; i <= iadev->num_rx_desc; i++)
free_desc(_ia_dev[board], i);
writew( ~(RX_FREEQ_EMPT | RX_EXCP_RCVD),
iadev->reass_reg+REASS_MASK_REG);
iadev->rxing = 1 ;
ia_cmds.status = 0 ;
break ;
case 0 xb:
if (!capable(CAP_NET_ADMIN)) return -EPERM;
ia_frontend_intr(iadev);
break ;
case 0 xa:
if (!capable(CAP_NET_ADMIN)) return -EPERM;
{
ia_cmds.status = 0 ;
IADebugFlag = ia_cmds.maddr;
printk("New debug option loaded\n" );
}
break ;
default :
ia_cmds.status = 0 ;
break ;
}
}
break ;
default :
break ;
}
return 0 ;
}
static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) {
IADEV *iadev;
struct dle *wr_ptr;
struct tx_buf_desc __iomem *buf_desc_ptr;
int desc;
int comp_code;
int total_len;
struct cpcs_trailer *trailer;
struct ia_vcc *iavcc;
iadev = INPH_IA_DEV(vcc->dev);
iavcc = INPH_IA_VCC(vcc);
if (!iavcc->txing) {
printk("discard packet on closed VC\n" );
if (vcc->pop)
vcc->pop(vcc, skb);
else
dev_kfree_skb_any(skb);
return 0 ;
}
if (skb->len > iadev->tx_buf_sz - 8 ) {
printk("Transmit size over tx buffer size\n" );
if (vcc->pop)
vcc->pop(vcc, skb);
else
dev_kfree_skb_any(skb);
return 0 ;
}
if ((unsigned long )skb->data & 3 ) {
printk("Misaligned SKB\n" );
if (vcc->pop)
vcc->pop(vcc, skb);
else
dev_kfree_skb_any(skb);
return 0 ;
}
/* Get a descriptor number from our free descriptor queue
We get the descr number from the TCQ now , since I am using
the TCQ as a free buffer queue . Initially TCQ will be
initialized with all the descriptors and is hence , full .
*/
desc = get_desc (iadev, iavcc);
if (desc == 0 xffff)
return 1 ;
comp_code = desc >> 13 ;
desc &= 0 x1fff;
if ((desc == 0 ) || (desc > iadev->num_tx_desc))
{
IF_ERR(printk(DEV_LABEL "invalid desc for send: %d\n" , desc);)
atomic_inc(&vcc->stats->tx);
if (vcc->pop)
vcc->pop(vcc, skb);
else
dev_kfree_skb_any(skb);
return 0 ; /* return SUCCESS */
}
if (comp_code)
{
IF_ERR(printk(DEV_LABEL "send desc:%d completion code %d error\n" ,
desc, comp_code);)
}
/* remember the desc and vcc mapping */
iavcc->vc_desc_cnt++;
iadev->desc_tbl[desc-1 ].iavcc = iavcc;
iadev->desc_tbl[desc-1 ].txskb = skb;
IA_SKB_STATE(skb) = 0 ;
iadev->ffL.tcq_rd += 2 ;
if (iadev->ffL.tcq_rd > iadev->ffL.tcq_ed)
iadev->ffL.tcq_rd = iadev->ffL.tcq_st;
writew(iadev->ffL.tcq_rd, iadev->seg_reg+TCQ_RD_PTR);
/* Put the descriptor number in the packet ready queue
and put the updated write pointer in the DLE field
*/
*(u16*)(iadev->seg_ram+iadev->ffL.prq_wr) = desc;
iadev->ffL.prq_wr += 2 ;
if (iadev->ffL.prq_wr > iadev->ffL.prq_ed)
iadev->ffL.prq_wr = iadev->ffL.prq_st;
/* Figure out the exact length of the packet and padding required to
make it aligned on a 48 byte boundary. */
total_len = skb->len + sizeof (struct cpcs_trailer);
total_len = ((total_len + 47 ) / 48 ) * 48 ;
IF_TX(printk("ia packet len:%d padding:%d\n" , total_len, total_len - skb->len);)
/* Put the packet in a tx buffer */
trailer = iadev->tx_buf[desc-1 ].cpcs;
IF_TX(printk("Sent: skb = 0x%p skb->data: 0x%p len: %d, desc: %d\n" ,
skb, skb->data, skb->len, desc);)
trailer->control = 0 ;
/*big endian*/
trailer->length = ((skb->len & 0 xff) << 8 ) | ((skb->len & 0 xff00) >> 8 );
trailer->crc32 = 0 ; /* not needed - dummy bytes */
/* Display the packet */
IF_TXPKT(printk("Sent data: len = %d MsgNum = %d\n" ,
skb->len, tcnter++);
xdump(skb->data, skb->len, "TX: " );
printk("\n" );)
/* Build the buffer descriptor */
buf_desc_ptr = iadev->seg_ram+TX_DESC_BASE;
buf_desc_ptr += desc; /* points to the corresponding entry */
buf_desc_ptr->desc_mode = AAL5 | EOM_EN | APP_CRC32 | CMPL_INT;
/* Huh ? p.115 of users guide describes this as a read-only register */
writew(TRANSMIT_DONE, iadev->seg_reg+SEG_INTR_STATUS_REG);
buf_desc_ptr->vc_index = vcc->vci;
buf_desc_ptr->bytes = total_len;
if (vcc->qos.txtp.traffic_class == ATM_ABR)
clear_lockup (vcc, iadev);
/* Build the DLE structure */
wr_ptr = iadev->tx_dle_q.write;
memset((caddr_t)wr_ptr, 0 , sizeof (*wr_ptr));
wr_ptr->sys_pkt_addr = dma_map_single(&iadev->pci->dev, skb->data,
skb->len, DMA_TO_DEVICE);
wr_ptr->local_pkt_addr = (buf_desc_ptr->buf_start_hi << 16 ) |
buf_desc_ptr->buf_start_lo;
/* wr_ptr->bytes = swap_byte_order(total_len); didn't seem to affect?? */
wr_ptr->bytes = skb->len;
/* hw bug - DLEs of 0x2d, 0x2e, 0x2f cause DMA lockup */
if ((wr_ptr->bytes >> 2 ) == 0 xb)
wr_ptr->bytes = 0 x30;
wr_ptr->mode = TX_DLE_PSI;
wr_ptr->prq_wr_ptr_data = 0 ;
/* end is not to be used for the DLE q */
if (++wr_ptr == iadev->tx_dle_q.end)
wr_ptr = iadev->tx_dle_q.start;
/* Build trailer dle */
wr_ptr->sys_pkt_addr = iadev->tx_buf[desc-1 ].dma_addr;
wr_ptr->local_pkt_addr = ((buf_desc_ptr->buf_start_hi << 16 ) |
buf_desc_ptr->buf_start_lo) + total_len - sizeof (struct cpcs_trailer);
wr_ptr->bytes = sizeof (struct cpcs_trailer);
wr_ptr->mode = DMA_INT_ENABLE;
wr_ptr->prq_wr_ptr_data = iadev->ffL.prq_wr;
/* end is not to be used for the DLE q */
if (++wr_ptr == iadev->tx_dle_q.end)
wr_ptr = iadev->tx_dle_q.start;
iadev->tx_dle_q.write = wr_ptr;
ATM_DESC(skb) = vcc->vci;
skb_queue_tail(&iadev->tx_dma_q, skb);
atomic_inc(&vcc->stats->tx);
iadev->tx_pkt_cnt++;
/* Increment transaction counter */
writel(2 , iadev->dma+IPHASE5575_TX_COUNTER);
#if 0
/* add flow control logic */
if (atomic_read(&vcc->stats->tx) % 20 == 0 ) {
if (iavcc->vc_desc_cnt > 10 ) {
vcc->tx_quota = vcc->tx_quota * 3 / 4 ;
printk("Tx1: vcc->tx_quota = %d \n" , (u32)vcc->tx_quota );
iavcc->flow_inc = -1 ;
iavcc->saved_tx_quota = vcc->tx_quota;
} else if ((iavcc->flow_inc < 0 ) && (iavcc->vc_desc_cnt < 3 )) {
// vcc->tx_quota = 3 * iavcc->saved_tx_quota / 4;
printk("Tx2: vcc->tx_quota = %d \n" , (u32)vcc->tx_quota );
iavcc->flow_inc = 0 ;
}
}
#endif
IF_TX(printk("ia send done\n" );)
return 0 ;
}
static int ia_send(struct atm_vcc *vcc, struct sk_buff *skb)
{
IADEV *iadev;
unsigned long flags;
iadev = INPH_IA_DEV(vcc->dev);
if ((!skb)||(skb->len>(iadev->tx_buf_sz-sizeof (struct cpcs_trailer))))
{
if (!skb)
printk(KERN_CRIT "null skb in ia_send\n" );
else dev_kfree_skb_any(skb);
return -EINVAL;
}
spin_lock_irqsave(&iadev->tx_lock, flags);
if (!test_bit(ATM_VF_READY,&vcc->flags)){
dev_kfree_skb_any(skb);
spin_unlock_irqrestore(&iadev->tx_lock, flags);
return -EINVAL;
}
ATM_SKB(skb)->vcc = vcc;
if (skb_peek(&iadev->tx_backlog)) {
skb_queue_tail(&iadev->tx_backlog, skb);
}
else {
if (ia_pkt_tx (vcc, skb)) {
skb_queue_tail(&iadev->tx_backlog, skb);
}
}
spin_unlock_irqrestore(&iadev->tx_lock, flags);
return 0 ;
}
static int ia_proc_read(struct atm_dev *dev,loff_t *pos,char *page)
{
int left = *pos, n;
char *tmpPtr;
IADEV *iadev = INPH_IA_DEV(dev);
if (!left--) {
if (iadev->phy_type == FE_25MBIT_PHY) {
n = sprintf(page, " Board Type : Iphase5525-1KVC-128K\n" );
return n;
}
if (iadev->phy_type == FE_DS3_PHY)
n = sprintf(page, " Board Type : Iphase-ATM-DS3" );
else if (iadev->phy_type == FE_E3_PHY)
n = sprintf(page, " Board Type : Iphase-ATM-E3" );
else if (iadev->phy_type == FE_UTP_OPTION)
n = sprintf(page, " Board Type : Iphase-ATM-UTP155" );
else
n = sprintf(page, " Board Type : Iphase-ATM-OC3" );
tmpPtr = page + n;
if (iadev->pci_map_size == 0 x40000)
n += sprintf(tmpPtr, "-1KVC-" );
else
n += sprintf(tmpPtr, "-4KVC-" );
tmpPtr = page + n;
if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_1M)
n += sprintf(tmpPtr, "1M \n" );
else if ((iadev->memType & MEM_SIZE_MASK) == MEM_SIZE_512K)
n += sprintf(tmpPtr, "512K\n" );
else
n += sprintf(tmpPtr, "128K\n" );
return n;
}
if (!left) {
return sprintf(page, " Number of Tx Buffer: %u\n"
" Size of Tx Buffer : %u\n"
" Number of Rx Buffer: %u\n"
" Size of Rx Buffer : %u\n"
" Packets Received : %u\n"
" Packets Transmitted: %u\n"
" Cells Received : %u\n"
" Cells Transmitted : %u\n"
" Board Dropped Cells: %u\n"
" Board Dropped Pkts : %u\n" ,
iadev->num_tx_desc, iadev->tx_buf_sz,
iadev->num_rx_desc, iadev->rx_buf_sz,
iadev->rx_pkt_cnt, iadev->tx_pkt_cnt,
iadev->rx_cell_cnt, iadev->tx_cell_cnt,
iadev->drop_rxcell, iadev->drop_rxpkt);
}
return 0 ;
}
static const struct atmdev_ops ops = {
.open = ia_open,
.close = ia_close,
.ioctl = ia_ioctl,
.send = ia_send,
.phy_put = ia_phy_put,
.phy_get = ia_phy_get,
.change_qos = ia_change_qos,
.proc_read = ia_proc_read,
.owner = THIS_MODULE,
};
static int ia_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct atm_dev *dev;
IADEV *iadev;
int ret;
iadev = kzalloc(sizeof (*iadev), GFP_KERNEL);
if (!iadev) {
ret = -ENOMEM;
goto err_out;
}
iadev->pci = pdev;
IF_INIT(printk("ia detected at bus:%d dev: %d function:%d\n" ,
pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));)
if (pci_enable_device(pdev)) {
ret = -ENODEV;
goto err_out_free_iadev;
}
dev = atm_dev_register(DEV_LABEL, &pdev->dev, &ops, -1 , NULL);
if (!dev) {
ret = -ENOMEM;
goto err_out_disable_dev;
}
dev->dev_data = iadev;
IF_INIT(printk(DEV_LABEL "registered at (itf :%d)\n" , dev->number);)
IF_INIT(printk("dev_id = 0x%p iadev->LineRate = %d \n" , dev,
iadev->LineRate);)
pci_set_drvdata(pdev, dev);
ia_dev[iadev_count] = iadev;
_ia_dev[iadev_count] = dev;
iadev_count++;
if (ia_init(dev) || ia_start(dev)) {
IF_INIT(printk("IA register failed!\n" );)
iadev_count--;
ia_dev[iadev_count] = NULL;
_ia_dev[iadev_count] = NULL;
ret = -EINVAL;
goto err_out_deregister_dev;
}
IF_EVENT(printk("iadev_count = %d\n" , iadev_count);)
iadev->next_board = ia_boards;
ia_boards = dev;
return 0 ;
err_out_deregister_dev:
atm_dev_deregister(dev);
err_out_disable_dev:
pci_disable_device(pdev);
err_out_free_iadev:
kfree(iadev);
err_out:
return ret;
}
static void ia_remove_one(struct pci_dev *pdev)
{
struct atm_dev *dev = pci_get_drvdata(pdev);
IADEV *iadev = INPH_IA_DEV(dev);
/* Disable phy interrupts */
ia_phy_put(dev, ia_phy_get(dev, SUNI_RSOP_CIE) & ~(SUNI_RSOP_CIE_LOSE),
SUNI_RSOP_CIE);
udelay(1 );
if (dev->phy && dev->phy->stop)
dev->phy->stop(dev);
/* De-register device */
free_irq(iadev->irq, dev);
iadev_count--;
ia_dev[iadev_count] = NULL;
_ia_dev[iadev_count] = NULL;
IF_EVENT(printk("deregistering iav at (itf:%d)\n" , dev->number);)
atm_dev_deregister(dev);
iounmap(iadev->base);
pci_disable_device(pdev);
ia_free_rx(iadev);
ia_free_tx(iadev);
kfree(iadev);
}
static const struct pci_device_id ia_pci_tbl[] = {
{ PCI_VENDOR_ID_IPHASE, 0 x0008, PCI_ANY_ID, PCI_ANY_ID, },
{ PCI_VENDOR_ID_IPHASE, 0 x0009, PCI_ANY_ID, PCI_ANY_ID, },
{ 0 ,}
};
MODULE_DEVICE_TABLE(pci, ia_pci_tbl);
static struct pci_driver ia_driver = {
.name = DEV_LABEL,
.id_table = ia_pci_tbl,
.probe = ia_init_one,
.remove = ia_remove_one,
};
static int __init ia_module_init(void )
{
int ret;
ret = pci_register_driver(&ia_driver);
if (ret >= 0 ) {
ia_timer.expires = jiffies + 3 *HZ;
add_timer(&ia_timer);
} else
printk(KERN_ERR DEV_LABEL ": no adapter found\n" );
return ret;
}
static void __exit ia_module_exit(void )
{
pci_unregister_driver(&ia_driver);
timer_delete_sync(&ia_timer);
}
module_init(ia_module_init);
module_exit(ia_module_exit);
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