iphase.c
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上传日期:2013-04-10
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文件大小:111k
- /******************************************************************************
- 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 1KVC 1M 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 followings 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 4K VC support to the board with 512K control memory.
- Add the support of all the variants of the Interphase ATM PCI
- (i)Chip adapter cards including x575 (155M OC3 and UTP155), x525
- (25M UTP25) and x531 (DS3 and E3).
- Add SMP support.
- Support and updates available at: ftp://ftp.iphase.com/pub/atm
- *******************************************************************************/
- #ifdef IA_MODULE
- #define MODULE
- #endif
- #include <linux/version.h>
- #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/sonet.h>
- #include <linux/skbuff.h>
- #include <linux/time.h>
- #include <linux/sched.h> /* for xtime */
- #include <linux/delay.h>
- #include <linux/uio.h>
- #include <linux/init.h>
- #include <asm/system.h>
- #include <asm/io.h>
- #include <asm/atomic.h>
- #include <asm/uaccess.h>
- #include <asm/string.h>
- #include <asm/byteorder.h>
- #include <linux/vmalloc.h>
- #include "iphase.h"
- #include "suni.h"
- #define swap(x) (((x & 0xff) << 8) | ((x & 0xff00) >> 8))
- struct suni_priv {
- struct k_sonet_stats sonet_stats; /* link diagnostics */
- unsigned char loop_mode; /* loopback mode */
- struct atm_dev *dev; /* device back-pointer */
- struct suni_priv *next; /* next SUNI */
- };
- #define PRIV(dev) ((struct suni_priv *) dev->phy_data)
- static unsigned char ia_phy_get(struct atm_dev *dev, unsigned long addr);
- static IADEV *ia_dev[8];
- static struct atm_dev *_ia_dev[8];
- static int iadev_count;
- static void ia_led_timer(unsigned long arg);
- static struct timer_list ia_timer = { function: ia_led_timer };
- struct atm_vcc *vcc_close_que[100];
- 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 u32 IADebugFlag = /* IF_IADBG_ERR | IF_IADBG_CBR| IF_IADBG_INIT_ADAPTER
- |IF_IADBG_ABR | IF_IADBG_EVENT*/ 0;
- #ifdef MODULE
- MODULE_PARM(IA_TX_BUF, "i");
- MODULE_PARM(IA_TX_BUF_SZ, "i");
- MODULE_PARM(IA_RX_BUF, "i");
- MODULE_PARM(IA_RX_BUF_SZ, "i");
- MODULE_PARM(IADebugFlag, "i");
- #endif
- MODULE_LICENSE("GPL");
- #if BITS_PER_LONG != 32
- # error FIXME: this driver only works on 32-bit platforms
- #endif
- /**************************** 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 -1;
- 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;
- extern void desc_dbg(IADEV *iadev);
- tcq_wr = readl(dev->seg_reg+TCQ_WR_PTR) & 0xffff;
- 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 %ldn", 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_descn");
- continue;
- }
- iavcc_r->vc_desc_cnt--;
- dev->desc_tbl[desc1 -1].timestamp = 0;
- IF_EVENT(printk("ia_hack: return_q skb = 0x%x desc = %dn",
- (u32)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 availablen");
- }
- 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 sk_buff *skb;
- struct ia_vcc *iavcc_r = NULL;
- unsigned long delta;
- static unsigned long timer = 0;
- int ltimeout;
- extern void desc_dbg(IADEV *iadev);
- ia_hack_tcq (dev);
- if(((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 = %ldn", 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 (!(skb = dev->desc_tbl[i].txskb) ||
- !(iavcc_r = dev->desc_tbl[i].iavcc))
- printk("Fatal err, desc table vcc or skb is NULLn");
- 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 0xFFFF;
-
- /* 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 0xFFFF;
- 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 == 0x05 ) {
- abr_vc += vcc->vci;
- eabr_vc += vcc->vci;
- if( eabr_vc->last_desc ) {
- if( (abr_vc->status & 0x07) == ABR_STATE /* 0x2 */ ) {
- /* Wait for 10 Micro sec */
- udelay(10);
- if ((eabr_vc->last_desc)&&((abr_vc->status & 0x07)==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 foundn");)
- writew(0xFFFD, dev->seg_reg+MODE_REG_0);
- /* Wait for 10 Micro sec */
- udelay(10);
- abr_vc->status &= 0xFFF8;
- abr_vc->status |= 0x0001; /* 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 %xn",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 = reserverd (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 0x4000
- #define M_BITS 9 /* Number of bits in mantissa */
- #define E_BITS 5 /* Number of bits in exponent */
- #define M_MASK 0x1ff
- #define E_MASK 0x1f
- u16 flot;
- u32 tmp = cr & 0x00ffffff;
- 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 = 0x055cb7;
- srv_p->tbe = 0xffffff;
- srv_p->frtt = 0x3a;
- srv_p->rif = 0xf;
- srv_p->rdf = 0xb;
- srv_p->nrm = 0x4;
- srv_p->trm = 0x7;
- srv_p->cdf = 0x3;
- 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) & 0x0f) << 12)|(MRM << 8) | trm;
- crm = srv_p->tbe / nrm;
- if (crm == 0) crm = 1;
- f_abr_vc->f_crm = crm & 0xff;
- 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) & 0xfff;
- 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 = 0x0042;
- 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) & 0x000f;
- 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 definedn");)
- 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%xn",
- entries, rate, dev->Granularity);)
- if (entries < 1)
- IF_CBR(printk("CBR: Bandwidth smaller than granularity of CBR tablen");)
- 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%xn",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%x, NumToAssign=%dn",
- testSlot, (u32)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%x,Testslot=%dn",
- (u32)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=%dn",
- testSlot, toBeAssigned);)
- }
- // set table index and read in value
- TstSchedTbl = (u16*)(SchedTbl + testSlot);
- IF_CBR(printk("Reading CBR Tbl from 0x%x, CbrVal=0x%x Iteration %dn",
- (u32)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 | (0x23 << 2)), dev->seg_reg+STPARMS);
- IF_CBR(printk("CBR is enabledn");)
- }
- 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 | (0x23 << 2)), iadev->seg_reg+STPARMS);
- IF_CBR (printk("CBR support disabledn");)
- }
- 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=%dn",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_que_tx (IADEV *iadev) {
- struct sk_buff *skb;
- int num_desc;
- struct atm_vcc *vcc;
- struct ia_vcc *iavcc;
- static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb);
- 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 vccn");
- 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;
- }
- iavcc = INPH_IA_VCC(vcc);
- if (ia_pkt_tx (vcc, skb)) {
- skb_queue_head(&iadev->tx_backlog, skb);
- }
- num_desc--;
- }
- return 0;
- }
- 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 nulln");
- goto out;
- }
- vcc = ATM_SKB(skb)->vcc;
- if (!vcc) {
- printk("ia_tx_poll: vcc is nulln");
- dev_kfree_skb_any(skb);
- goto out;
- }
- iavcc = INPH_IA_VCC(vcc);
- if (!iavcc) {
- printk("ia_tx_poll: iavcc is nulln");
- 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 matchn");)
- if ((vcc->pop) && (skb1->len != 0))
- {
- vcc->pop(vcc, skb1);
- IF_EVENT(printk("Tansmit Done - skb 0x%lx returnn",
- (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 requedn",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 returnn",(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 & 0x8000);
- 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
- * 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=%dn",
- 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%xn",
- 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 void IaFrontEndIntr(IADEV *iadev) {
- volatile IA_SUNI *suni;
- volatile ia_mb25_t *mb25;
- volatile suni_pm7345_t *suni_pm7345;
- u32 intr_status;
- u_int frmr_intr;
- if(iadev->phy_type & FE_25MBIT_PHY) {
- mb25 = (ia_mb25_t*)iadev->phy;
- iadev->carrier_detect = Boolean(mb25->mb25_intr_status & MB25_IS_GSB);
- } else if (iadev->phy_type & FE_DS3_PHY) {
- suni_pm7345 = (suni_pm7345_t *)iadev->phy;
- /* clear FRMR interrupts */
- frmr_intr = suni_pm7345->suni_ds3_frm_intr_stat;
- iadev->carrier_detect =
- Boolean(!(suni_pm7345->suni_ds3_frm_stat & SUNI_DS3_LOSV));
- } else if (iadev->phy_type & FE_E3_PHY ) {
- suni_pm7345 = (suni_pm7345_t *)iadev->phy;
- frmr_intr = suni_pm7345->suni_e3_frm_maint_intr_ind;
- iadev->carrier_detect =
- Boolean(!(suni_pm7345->suni_e3_frm_fram_intr_ind_stat&SUNI_E3_LOS));
- }
- else {
- suni = (IA_SUNI *)iadev->phy;
- intr_status = suni->suni_rsop_status & 0xff;
- iadev->carrier_detect = Boolean(!(suni->suni_rsop_status & SUNI_LOSV));
- }
- if (iadev->carrier_detect)
- printk("IA: SUNI carrier detectedn");
- else
- printk("IA: SUNI carrier lost signaln");
- return;
- }
- void ia_mb25_init (IADEV *iadev)
- {
- volatile ia_mb25_t *mb25 = (ia_mb25_t*)iadev->phy;
- #if 0
- mb25->mb25_master_ctrl = MB25_MC_DRIC | MB25_MC_DREC | MB25_MC_ENABLED;
- #endif
- mb25->mb25_master_ctrl = MB25_MC_DRIC | MB25_MC_DREC;
- mb25->mb25_diag_control = 0;
- /*
- * Initialize carrier detect state
- */
- iadev->carrier_detect = Boolean(mb25->mb25_intr_status & MB25_IS_GSB);
- return;
- }
- void ia_suni_pm7345_init (IADEV *iadev)
- {
- volatile suni_pm7345_t *suni_pm7345 = (suni_pm7345_t *)iadev->phy;
- if (iadev->phy_type & FE_DS3_PHY)
- {
- iadev->carrier_detect =
- Boolean(!(suni_pm7345->suni_ds3_frm_stat & SUNI_DS3_LOSV));
- suni_pm7345->suni_ds3_frm_intr_enbl = 0x17;
- suni_pm7345->suni_ds3_frm_cfg = 1;
- suni_pm7345->suni_ds3_tran_cfg = 1;
- suni_pm7345->suni_config = 0;
- suni_pm7345->suni_splr_cfg = 0;
- suni_pm7345->suni_splt_cfg = 0;
- }
- else
- {
- iadev->carrier_detect =
- Boolean(!(suni_pm7345->suni_e3_frm_fram_intr_ind_stat & SUNI_E3_LOS));
- suni_pm7345->suni_e3_frm_fram_options = 0x4;
- suni_pm7345->suni_e3_frm_maint_options = 0x20;
- suni_pm7345->suni_e3_frm_fram_intr_enbl = 0x1d;
- suni_pm7345->suni_e3_frm_maint_intr_enbl = 0x30;
- suni_pm7345->suni_e3_tran_stat_diag_options = 0x0;
- suni_pm7345->suni_e3_tran_fram_options = 0x1;
- suni_pm7345->suni_config = SUNI_PM7345_E3ENBL;
- suni_pm7345->suni_splr_cfg = 0x41;
- suni_pm7345->suni_splt_cfg = 0x41;
- }
- /*
- * Enable RSOP loss of signal interrupt.
- */
- suni_pm7345->suni_intr_enbl = 0x28;
-
- /*
- * Clear error counters
- */
- suni_pm7345->suni_id_reset = 0;
- /*
- * Clear "PMCTST" in master test register.
- */
- suni_pm7345->suni_master_test = 0;
- suni_pm7345->suni_rxcp_ctrl = 0x2c;
- suni_pm7345->suni_rxcp_fctrl = 0x81;
-
- suni_pm7345->suni_rxcp_idle_pat_h1 =
- suni_pm7345->suni_rxcp_idle_pat_h2 =
- suni_pm7345->suni_rxcp_idle_pat_h3 = 0;
- suni_pm7345->suni_rxcp_idle_pat_h4 = 1;
-
- suni_pm7345->suni_rxcp_idle_mask_h1 = 0xff;
- suni_pm7345->suni_rxcp_idle_mask_h2 = 0xff;
- suni_pm7345->suni_rxcp_idle_mask_h3 = 0xff;
- suni_pm7345->suni_rxcp_idle_mask_h4 = 0xfe;
-
- suni_pm7345->suni_rxcp_cell_pat_h1 =
- suni_pm7345->suni_rxcp_cell_pat_h2 =
- suni_pm7345->suni_rxcp_cell_pat_h3 = 0;
- suni_pm7345->suni_rxcp_cell_pat_h4 = 1;
-
- suni_pm7345->suni_rxcp_cell_mask_h1 =
- suni_pm7345->suni_rxcp_cell_mask_h2 =
- suni_pm7345->suni_rxcp_cell_mask_h3 =
- suni_pm7345->suni_rxcp_cell_mask_h4 = 0xff;
-
- suni_pm7345->suni_txcp_ctrl = 0xa4;
- suni_pm7345->suni_txcp_intr_en_sts = 0x10;
- suni_pm7345->suni_txcp_idle_pat_h5 = 0x55;
-
- suni_pm7345->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 *****************************/
-
- /* pwang_test debug utility */
- int tcnter = 0, rcnter = 0;
- 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++){
- if (isprint((int)cp[count + col]))
- pBuf += sprintf( pBuf, "%c", cp[count + col] );
- else
- pBuf += sprintf( pBuf, "." );
- }
- sprintf( pBuf, "n" );
- // SPrint(prntBuf);
- printk(prntBuf);
- count += col;
- pBuf = prntBuf;
- }
- } /* close xdump(... */
-
- 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 -------------*/
-
- void desc_dbg(IADEV *iadev) {
- u_short tcq_wr_ptr, tcq_st_ptr, tcq_ed_ptr;
- u32 tmp, i;
- // 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 = %dn",
- 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 = 0x%xn", 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);
- }
-
-
- /*----------------------------- Recieving 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) & 0xffff;
- while((state & EXCPQ_EMPTY) != EXCPQ_EMPTY)
- { printk("state = %x n", state);
- excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_RD_PTR) & 0xffff;
- 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) & 0x0007;
- // pwang_test
- excpq_rd_ptr += 4;
- if (excpq_rd_ptr > (readw(iadev->reass_reg + EXCP_Q_ED_ADR)& 0xffff))
- excpq_rd_ptr = readw(iadev->reass_reg + EXCP_Q_ST_ADR)& 0xffff;
- writew( excpq_rd_ptr, iadev->reass_reg + EXCP_Q_RD_PTR);
- state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
- }
- #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 *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)&0xffff))
- {
- printk(KERN_ERR DEV_LABEL "(itf %d) Receive queue emptyn", dev->number);
- return -EINVAL;
- }
- /* mask 1st 3 bits to get the actual descno. */
- desc = readw(iadev->reass_ram+iadev->rfL.pcq_rd) & 0x1fff;
- IF_RX(printk("reass_ram = 0x%x iadev->rfL.pcq_rd = 0x%x desc = %dn",
- iadev->reass_ram, iadev->rfL.pcq_rd, desc);
- printk(" pcq_wr_ptr = 0x%xn",
- readw(iadev->reass_reg+PCQ_WR_PTR)&0xffff);)
- /* 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 = (struct rx_buf_desc *)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 & 0xffff) > 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 & 0xffff];
- if (!vcc)
- {
- free_desc(dev, desc);
- printk("IA: null vcc, drop PDUn");
- 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 errorn");)
- }
- else if (status & RX_PTE) {
- IF_ERR(printk(" cause: packet time outn");)
- }
- else {
- IF_ERR(printk(" cause: buffer over flown");)
- }
- 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 LINUX_VERSION_CODE >= 0x20312
- if (!(skb = atm_alloc_charge(vcc, len, GFP_ATOMIC))) {
- #else
- if (atm_charge(vcc, atm_pdu2truesize(len))) {
- /* lets allocate an skb for now */
- skb = alloc_skb(len, GFP_ATOMIC);
- if (!skb)
- {
- IF_ERR(printk("can't allocate memory for recv, drop pkt!n");)
- atomic_inc(&vcc->stats->rx_drop);
- atm_return(vcc, atm_pdu2truesize(len));
- goto out_free_desc;
- }
- }
- else {
- IF_EVENT(printk("IA: Rx over the rx_quota %ldn", vcc->rx_quota);)
- #endif
- if (vcc->vci < 32)
- printk("Drop control packetsn");
- goto out_free_desc;
- }
- skb_put(skb,len);
- // pwang_test
- ATM_SKB(skb)->vcc = vcc;
- ATM_SKB(skb)->iovcnt = 0;
- 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 = virt_to_bus(skb->data);
- 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) & 0xffff;
- IF_EVENT(printk("rx_intr: status = 0x%xn", status);)
- if (status & RX_PKT_RCVD)
- {
- /* do something */
- /* Basically recvd an interrupt for receving 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) & 0xffff;
- IF_EVENT(printk("Rx intr status: RX_PKT_RCVD %08xn", status);)
- while(!(state & PCQ_EMPTY))
- {
- rx_pkt(dev);
- state = readl(iadev->reass_reg + STATE_REG) & 0xffff;
- }
- 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 (((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 %08xn", status);)
- }
- if (status & RX_EXCP_RCVD)
- {
- /* probably need to handle the exception queue also. */
- IF_EVENT(printk("Rx intr status: RX_EXCP_RCVD %08xn", 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 %08xn", 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 0n");
- dev_kfree_skb_any(skb);
- }
- else
- {
- struct cpcs_trailer *trailer;
- u_short length;
- struct ia_vcc *ia_vcc;
- /* no VCC related housekeeping done as yet. lets see */
- vcc = ATM_SKB(skb)->vcc;
- if (!vcc) {
- printk("IA: null vccn");
- dev_kfree_skb_any(skb);
- goto INCR_DLE;
- }
- ia_vcc = INPH_IA_VCC(vcc);
- if (ia_vcc == NULL)
- {
- atomic_inc(&vcc->stats->rx_err);
- dev_kfree_skb_any(skb);
- #if LINUX_VERSION_CODE >= 0x20312
- atm_return(vcc, atm_guess_pdu2truesize(len));
- #else
- atm_return(vcc, atm_pdu2truesize(len));
- #endif
- goto INCR_DLE;
- }
- // get real pkt length pwang_test
- trailer = (struct cpcs_trailer*)((u_char *)skb->data +
- skb->len - sizeof(*trailer));
- length = swap(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);)
- dev_kfree_skb_any(skb);
- #if LINUX_VERSION_CODE >= 0x20312
- atm_return(vcc, atm_guess_pdu2truesize(len));
- #else
- atm_return(vcc, atm_pdu2truesize(len));
- #endif
- 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) & 0xffff;
- if (!(state & FREEQ_EMPTY)) {
- state = readl(iadev->reass_reg + REASS_MASK_REG) & 0xffff;
- 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 *vc_table;
- u_short *reass_ptr;
- IF_EVENT(printk("iadev: open_rx %d.%dn", 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 supportn");
- return -EINVAL;
- }
- }
- /* Make only this VCI in the vc table valid and let all
- others be invalid entries */
- vc_table = (u_short *)(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 = (u_short *)
- (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 openn",
- 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 *buf_desc_ptr;
- unsigned long rx_pkt_start = 0;
- u32 *odle_addr, *dle_addr;
- struct abr_vc_table *abr_vc_table;
- u16 *vc_table;
- u16 *reass_table;
- u16 *ptr16;
- 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);
- /* I need to initialize the DLEs somewhere. Lets see what I
- need to do for this, hmmm...
- - allocate memory for 256 DLEs. make sure that it starts
- on a 4k byte address boundary. Program the start address
- in Receive List address register. ..... to do for TX also
- To make sure that it is a 4k byte boundary - allocate 8k and find
- 4k byte boundary within.
- ( (addr + (4k-1)) & ~(4k-1) )
- */
-
- /* allocate 8k bytes */
- odle_addr = kmalloc(2*sizeof(struct dle)*DLE_ENTRIES, GFP_KERNEL);
- if (!odle_addr)
- {
- printk(KERN_ERR DEV_LABEL "can't allocate DLEsn");
- return -ENOMEM;
- }
- /* find 4k byte boundary within the 8k allocated */
- dle_addr = (u32*)( ((u32)odle_addr+(4096-1)) & ~(4096-1) );
- 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*)((u32)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 */
- writel(virt_to_bus(dle_addr) & 0xfffff000, iadev->dma+IPHASE5575_RX_LIST_ADDR);
- IF_INIT(printk("Tx Dle list addr: 0x%08x value: 0x%0xn",
- (u32)(iadev->dma+IPHASE5575_TX_LIST_ADDR),
- *(u32*)(iadev->dma+IPHASE5575_TX_LIST_ADDR));
- printk("Rx Dle list addr: 0x%08x value: 0x%0xn",
- (u32)(iadev->dma+IPHASE5575_RX_LIST_ADDR),
- *(u32*)(iadev->dma+IPHASE5575_RX_LIST_ADDR));)
-
- writew(0xffff, 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 0x0000 (736 - 23K)
- VP Table 0x5c00 (256 - 512)
- Except q 0x5e00 (128 - 512)
- Free buffer q 0x6000 (1K - 2K)
- Packet comp q 0x6800 (1K - 2K)
- Reass Table 0x7000 (1K - 2K)
- VC Table 0x7800 (1K - 2K)
- ABR VC Table 0x8000 (1K - 32K)
- */
-
- /* 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 =(struct rx_buf_desc *)iadev->RX_DESC_BASE_ADDR;
- memset((caddr_t)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((caddr_t)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 & 0x0000ffff;
- buf_desc_ptr++;
- rx_pkt_start += iadev->rx_buf_sz;
- }
- IF_INIT(printk("Rx Buffer desc ptr: 0x%0xn", (u32)(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%0xn", (u32)freeq_start);)
- /* Packet Complete Queue */
- i = (PKT_COMP_Q * iadev->memSize) & 0xffff;
- 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) & 0xffff;
- 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) & 0xffff;
- iadev->rfL.fdq_ed = readw(iadev->reass_reg+FREEQ_ED_ADR) & 0xffff ;
- iadev->rfL.fdq_rd = readw(iadev->reass_reg+FREEQ_RD_PTR) & 0xffff;
- iadev->rfL.fdq_wr = readw(iadev->reass_reg+FREEQ_WR_PTR) & 0xffff;
- iadev->rfL.pcq_st = readw(iadev->reass_reg+PCQ_ST_ADR) & 0xffff;
- iadev->rfL.pcq_ed = readw(iadev->reass_reg+PCQ_ED_ADR) & 0xffff;
- iadev->rfL.pcq_rd = readw(iadev->reass_reg+PCQ_RD_PTR) & 0xffff;
- iadev->rfL.pcq_wr = readw(iadev->reass_reg+PCQ_WR_PTR) & 0xffff;
-
- 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 1s or 0x000f 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) & 0xfff8) | 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 1K 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 = 0x0003;
- abr_vc_table->air = 0x5eb1;
- abr_vc_table++;
- }
- /* Initialize other registers */
-
- /* VP Filter Register set for VC Reassembly only */
- writew(0xff00, iadev->reass_reg+VP_FILTER);
- writew(0, iadev->reass_reg+XTRA_RM_OFFSET);
- writew(0x1, 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(0xF6F8, iadev->reass_reg+PKT_TM_CNT );
- ptr16 = (u16*)j;
- i = ((u32)ptr16 >> 6) & 0xff;
- ptr16 += j - 1;
- i |=(((u32)ptr16 << 2) & 0xff00);
- 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 = kmalloc(4*iadev->num_vc,GFP_KERNEL);
- if (!iadev->rx_open)
- {
- printk(KERN_ERR DEV_LABEL "itf %d couldn't get free pagen",
- dev->number);
- kfree(odle_addr);
- return -ENOMEM;
- }
- memset(iadev->rx_open, 0, 4*iadev->num_vc);
- iadev->rxing = 1;
- iadev->rx_pkt_cnt = 0;
- /* Mode Register */
- writew(R_ONLINE, iadev->reass_reg+MODE_REG);
- return 0;
- }
-
- /*
- 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 0x0000 (128 - 4K)
- UBR sched 0x1000 (1K - 4K)
- UBR Wait q 0x2000 (1K - 4K)
- Commn queues 0x3000 Packet Ready, Trasmit comp(0x3100)
- (128 - 256) each
- extended VC 0x4000 (1K - 8K)
- ABR sched 0x6000 and ABR wait queue (1K - 2K) each
- CBR sched 0x7000 (as needed)
- VC table 0x8000 (1K - 32K)
- */
-
- 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("Tansmit Done Intr logic runn");)
- 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 receivedn");)
- }
- }
-
- 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;
- vcc = ATM_SKB(skb)->vcc;
- if (!vcc) {
- printk("tx_dle_intr: vcc is nulln");
- 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 nulln");
- 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%x n", (u32)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 = %dn", 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 supportn");
- return -EINVAL;
- }
- if (vcc->qos.txtp.traffic_class == ATM_CBR) {
- printk("IA: CBR not supportn");
- 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 %dn",
- vcc->qos.txtp.max_sdu,iadev->tx_buf_sz);
- INPH_IA_VCC(vcc) = 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) {
- if (vcc->qos.txtp.max_sdu != 0) {
- if (ia_vcc->pcr > 60000)
- vcc->sk->sndbuf = vcc->qos.txtp.max_sdu * 5;
- else if (ia_vcc->pcr > 2000)
- vcc->sk->sndbuf = vcc->qos.txtp.max_sdu * 4;
- else
- vcc->sk->sndbuf = 3*vcc->qos.txtp.max_sdu;
- }
- else
- vcc->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) & 0x000f;
- evc->atm_hdr2 = (vcc->vci & 0x0fff) << 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%xn",
- 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 VCCn");)
- 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 = %dn",
- 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 supportn");
- return -EINVAL;
- }
- if (vcc->qos.txtp.max_pcr > iadev->LineRate) {
- IF_CBR(printk("PCR is not availblen");)
- 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 supportedn");
-
- 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;
- u32 *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%0xn",
- readw(iadev->seg_reg+SEG_MASK_REG));)
- /*---------- Initializing Transmit DLEs ----------*/
- /* allocating 8k memory for transmit DLEs */
- dle_addr = kmalloc(2*sizeof(struct dle)*DLE_ENTRIES, GFP_KERNEL);
- if (!dle_addr)
- {
- printk(KERN_ERR DEV_LABEL "can't allocate TX DLEsn");
- return -ENOMEM;
- }
-
- /* find 4k byte boundary within the 8k allocated */
- dle_addr = (u32*)(((u32)dle_addr+(4096-1)) & ~(4096-1));
- 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*)((u32)dle_addr+sizeof(struct dle)*DLE_ENTRIES);
- /* write the upper 20 bits of the start address to tx list address register */
- writel(virt_to_bus(dle_addr) & 0xfffff000, iadev->dma+IPHASE5575_TX_LIST_ADDR);
- writew(0xffff, 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 0x0000 (128 - 4K)
- Commn queues 0x1000 Transmit comp, Packet ready(0x1400)
- (512 - 1K) each
- TCQ - 4K, PRQ - 5K
- CBR Table 0x1800 (as needed) - 6K
- UBR Table 0x3000 (1K - 4K) - 12K
- UBR Wait queue 0x4000 (1K - 4K) - 16K
- ABR sched 0x5000 and ABR wait queue (1K - 2K) each
- ABR Tbl - 20K, ABR Wq - 22K
- extended VC 0x6000 (1K - 8K) - 24K
- VC Table 0x8000 (1K - 32K) - 32K
-
- Between 0x2000 (8K) and 0x3000 (12K) there is 4K 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 & 0x0000ffff;
- buf_desc_ptr++;
- tx_pkt_start += iadev->tx_buf_sz;
- }
- iadev->tx_buf = kmalloc(iadev->num_tx_desc*sizeof(caddr_t), GFP_KERNEL);
- if (!iadev->tx_buf) {
- printk(KERN_ERR DEV_LABEL " couldn't get memn");
- return -EAGAIN;
- }
- for (i= 0; i< iadev->num_tx_desc; i++)
- {
-
- iadev->tx_buf[i] = kmalloc(sizeof(struct cpcs_trailer),
- GFP_KERNEL|GFP_DMA);
- if(!iadev->tx_buf[i]) {
- printk(KERN_ERR DEV_LABEL " couldn't get freepagen");
- return -EAGAIN;
- }
- }
- iadev->desc_tbl = kmalloc(iadev->num_tx_desc *
- sizeof(struct desc_tbl_t), GFP_KERNEL);
-
- /* 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) & 0xffff;
- iadev->ffL.prq_ed = readw(iadev->seg_reg+PRQ_ED_ADR) & 0xffff;
- iadev->ffL.prq_wr = readw(iadev->seg_reg+PRQ_WR_PTR) & 0xffff;
- iadev->ffL.tcq_st = readw(iadev->seg_reg+TCQ_ST_ADR) & 0xffff;
- iadev->ffL.tcq_ed = readw(iadev->seg_reg+TCQ_ED_ADR) & 0xffff;
- iadev->ffL.tcq_rd = readw(iadev->seg_reg+TCQ_RD_PTR) & 0xffff;
- /* 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 Initn");)
- #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%xn",
- 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%x CBR_PTR_BASE = 0x%xn",
- (u32)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%xn",
- readw(iadev->seg_reg+CBR_TAB_BEG), readw(iadev->seg_reg+CBR_TAB_END),
- readw(iadev->seg_reg+CBR_TAB_END+1));)
- tmp16 = (iadev->seg_ram+CBR_SCHED_TABLE*iadev->memSize);
- /* Initialize the CBR Schedualing Table */
- memset((caddr_t)(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 1K (# of entries).
- - UBR Table size is 4K
- - UBR wait queue is 4K
- since the table and wait queues are contiguous, all the bytes
- can be intialized 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) & 0xfff8),iadev->seg_reg+VCT_BASE);
- i = EXT_VC_TABLE * iadev->memSize;
- writew((i >> 8) & 0xfffe, iadev->seg_reg+VCTE_BASE);
- i = UBR_SCHED_TABLE * iadev->memSize;
- writew((i & 0xffff) >> 11, iadev->seg_reg+UBR_SBPTR_BASE);
- i = UBR_WAIT_Q * iadev->memSize;
- writew((i >> 7) & 0xffff, 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 1K (# of entries).
- - ABR Table size is 2K
- - ABR wait queue is 2K
- since the table and wait queues are contiguous, all the bytes
- can be intialized by one memeset.
- */
- i = ABR_SCHED_TABLE * iadev->memSize;
- writew((i >> 11) & 0xffff, iadev->seg_reg+ABR_SBPTR_BASE);
- i = ABR_WAIT_Q * iadev->memSize;
- writew((i >> 7) & 0xffff, 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(sizeof(long)*iadev->num_vc, GFP_KERNEL);
- if (!iadev->testTable) {
- printk("Get freepage failedn");
- return -EAGAIN;
- }
- 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])
- return -ENOMEM;
- 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 | (0x23 << 2)), iadev->seg_reg+STPARMS);
- }
- else {
- writew(cellrate_to_float(iadev->LineRate),iadev->seg_reg+MAXRATE);
- writew((UBR_EN | ABR_EN | (0x23 << 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(0xaa00, iadev->seg_reg+ABRUBR_ARB);
- iadev->close_pending = 0;
- #if LINUX_VERSION_CODE >= 0x20303
- init_waitqueue_head(&iadev->close_wait);
- init_waitqueue_head(&iadev->timeout_wait);
- #else
- iadev->close_wait = NULL;
- iadev->timeout_wait = NULL;
- #endif
- 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;
- }
-
- static void ia_int(int irq, void *dev_id, struct pt_regs *regs)
- {
- struct atm_dev *dev;
- IADEV *iadev;
- unsigned int status;
- dev = dev_id;
- iadev = INPH_IA_DEV(dev);
- while( (status = readl(iadev->reg+IPHASE5575_BUS_STATUS_REG) & 0x7f))
- {
- IF_EVENT(printk("ia_int: status = 0x%xn", status);)
- if (status & STAT_REASSINT)
- {
- /* do something */
- IF_EVENT(printk("REASSINT Bus status reg: %08xn", status);)
- rx_intr(dev);
- }
- if (status & STAT_DLERINT)
- {
- /* Clear this bit by writing a 1 to it. */
- *(u_int *)(iadev->reg+IPHASE5575_BUS_STATUS_REG) = STAT_DLERINT;
- rx_dle_intr(dev);
- }
- if (status & STAT_SEGINT)
- {
- /* do something */
- IF_EVENT(printk("IA: tx_intr n");)
- tx_intr(dev);
- }
- if (status & STAT_DLETINT)
- {
- *(u_int *)(iadev->reg+IPHASE5575_BUS_STATUS_REG) = STAT_DLETINT;
- tx_dle_intr(dev);
- }
- if (status & (STAT_FEINT | STAT_ERRINT | STAT_MARKINT))
- {
- if (status & STAT_FEINT)
- IaFrontEndIntr(iadev);
- }
- }
- }
-
-
-
- /*----------------------------- 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%04xn", 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 = 1;
- unsigned int pci[64];
-
- iadev = INPH_IA_DEV(dev);
- for(i=0; i<64; i++)
- if ((error = pci_read_config_dword(iadev->pci,
- i*4, &pci[i])) != PCIBIOS_SUCCESSFUL)
- return error;
- writel(0, iadev->reg+IPHASE5575_EXT_RESET);
- for(i=0; i<64; i++)
- if ((error = pci_write_config_dword(iadev->pci,
- i*4, pci[i])) != PCIBIOS_SUCCESSFUL)
- return error;
- udelay(5);
- return 0;
- }
-
-
- #if LINUX_VERSION_CODE >= 0x20312
- static int __init ia_init(struct atm_dev *dev)
- #else
- __initfunc(static int ia_init(struct atm_dev *dev))
- #endif
- {
- IADEV *iadev;
- unsigned long real_base, base;
- unsigned short command;
- unsigned char revision;
- 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_initn");)
- 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;
-
- if ((error = pci_read_config_word(iadev->pci, PCI_COMMAND,&command))
- || (error = pci_read_config_byte(iadev->pci,
- PCI_REVISION_ID,&revision)))
- {
- printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%xn",
- dev->number,error);
- return -EINVAL;
- }
- IF_INIT(printk(DEV_LABEL "(itf %d): rev.%d,realbase=0x%lx,irq=%dn",
- dev->number, 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 == 0x100000){
- iadev->num_vc = 4096;
- dev->ci_range.vci_bits = NR_VCI_4K_LD;
- iadev->memSize = 4;
- }
- else if (iadev->pci_map_size == 0x40000) {
- iadev->num_vc = 1024;
- iadev->memSize = 1;
- }
- else {
- printk("Unknown pci_map_size = 0x%xn", iadev->pci_map_size);
- return -EINVAL;
- }
- IF_INIT(printk (DEV_LABEL "map size: %in", iadev->pci_map_size);)
-
- /* enable bus mastering */
- pci_set_master(iadev->pci);
- /*
- * Delay at least 1us before doing any mem accesses (how 'bout 10?)
- */
- udelay(10);
-
- /* mapping the physical address to a virtual address in address space */
- base=(unsigned long)ioremap((unsigned long)real_base,iadev->pci_map_size); /* ioremap is not resolved ??? */
-
- if (!base)
- {
- printk(DEV_LABEL " (itf %d): can't set up page mappingn",
- dev->number);
- return error;
- }
- IF_INIT(printk(DEV_LABEL " (itf %d): rev.%d,base=0x%lx,irq=%dn",
- dev->number, revision, base, iadev->irq);)
-
- /* filling the iphase dev structure */
- iadev->mem = iadev->pci_map_size /2;
- iadev->base_diff = real_base - base;
- iadev->real_base = real_base;
- iadev->base = base;
-
- /* Bus Interface Control Registers */
- iadev->reg = (u32 *) (base + REG_BASE);
- /* Segmentation Control Registers */
- iadev->seg_reg = (u32 *) (base + SEG_BASE);
- /* Reassembly Control Registers */
- iadev->reass_reg = (u32 *) (base + REASS_BASE);
- /* Front end/ DMA control registers */
- iadev->phy = (u32 *) (base + PHY_BASE);
- iadev->dma = (u32 *) (base + PHY_BASE);
- /* RAM - Segmentation RAm and Reassembly RAM */
- iadev->ram = (u32 *) (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: %08x %08x %08x n %08x %08x %08x %08xn",
- (u32)iadev->reg,(u32)iadev->seg_reg,(u32)iadev->reass_reg,
- (u32)iadev->phy, (u32)iadev->ram, (u32)iadev->seg_ram,
- (u32)iadev->reass_ram);)
-
- /* lets try reading the MAC address */
- error = get_esi(dev);
- if (error) {
- iounmap((void *) 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((void *) iadev->base);
- printk("IA: reset SAR fail, please try againn");
- 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)&0xffff;
- iadev->rx_cell_cnt += (readw(iadev->reass_reg+CELL_CTR1) & 0xffff) << 16;
- iadev->drop_rxpkt += readw(iadev->reass_reg + DRP_PKT_CNTR ) & 0xffff;
- iadev->drop_rxcell += readw(iadev->reass_reg + ERR_CNTR) & 0xffff;
- iadev->tx_cell_cnt += readw(iadev->seg_reg + CELL_CTR_LO_AUTO)&0xffff;
- iadev->tx_cell_cnt += (readw(iadev->seg_reg+CELL_CTR_HIGH_AUTO)&0xffff)<<16;
- return;
- }
-
- static void ia_led_timer(unsigned long arg) {
- 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);
- }
- #if LINUX_VERSION_CODE >= 0x20312
- static int __init ia_start(struct atm_dev *dev)
- #else
- __initfunc(static int ia_start(struct atm_dev *dev))
- #endif
- {
- IADEV *iadev;
- int error = 1;
- unsigned char phy;
- u32 ctrl_reg;
- IF_EVENT(printk(">ia_startn");)
- iadev = INPH_IA_DEV(dev);
- if (request_irq(iadev->irq, &ia_int, SA_SHIRQ, DEV_LABEL, dev)) {
- printk(KERN_ERR DEV_LABEL "(itf %d): IRQ%d is already in usen",
- dev->number, iadev->irq);
- return -EAGAIN;
- }
- /* @@@ 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);
- free_irq(iadev->irq, dev);
- return -EIO;
- }
- udelay(10);
-
- /* Maybe we should reset the front end, initialize Bus Interface Control
- Registers and see. */
-
- IF_INIT(printk("Bus ctrl reg: %08xn",
- 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: %08xn",
- readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));
- printk("Bus status reg after init: %08xn",
- readl(iadev->reg+IPHASE5575_BUS_STATUS_REG));)
-
- ia_hw_type(iadev);
- error = tx_init(dev);
- if (error) {
- free_irq(iadev->irq, dev);
- return error;
- }
- error = rx_init(dev);
- if (error) {
- free_irq(iadev->irq, dev);
- return error;
- }
-
- 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: %08xn",
- readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
- phy = 0; /* resolve compiler complaint */
- IF_INIT (
- if ((phy=ia_phy_get(dev,0)) == 0x30)
- printk("IA: pm5346,rev.%dn",phy&0x0f);
- else
- printk("IA: utopia,rev.%0xn",phy);)
- if (iadev->phy_type & FE_25MBIT_PHY) {
- ia_mb25_init(iadev);
- return 0;
- }
- if (iadev->phy_type & (FE_DS3_PHY | FE_E3_PHY)) {
- ia_suni_pm7345_init(iadev);
- return 0;
- }
- error = suni_init(dev);
- if (error) {
- free_irq(iadev->irq, dev);
- return error;
- }
- /* Enable interrupt on loss of signal SUNI_RSOP_CIE 0x10
- SUNI_RSOP_CIE_LOSE - 0x04
- */
- ia_phy_put(dev, ia_phy_get(dev,0x10) | 0x04, 0x10);
- #ifndef MODULE
- error = dev->phy->start(dev);
- if (error) {
- free_irq(iadev->irq, dev);
- return error;
- }
- #endif
- /* Get iadev->carrier_detect status */
- IaFrontEndIntr(iadev);
- return 0;
- }
-
- static void ia_close(struct atm_vcc *vcc)
- {
- 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;
- int ctimeout;
- 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 = %dn",
- 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++;
- sleep_on_timeout(&iadev->timeout_wait, 50);
- 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 = %dn", ia_vcc->vc_desc_cnt);)
- closetime = jiffies;
- ctimeout = 300000 / ia_vcc->pcr;
- if (ctimeout == 0)
- ctimeout = 1;
- while (ia_vcc->vc_desc_cnt > 0){
- if ((jiffies - closetime) >= ctimeout)
- break;
- spin_unlock_irqrestore(&iadev->tx_lock, flags);
- sleep_on(&iadev->close_wait);
- 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 *abr_vc_table = (struct abr_vc_table *)
- (iadev->reass_ram+ABR_VC_TABLE*iadev->memSize);
- abr_vc_table += vcc->vci;
- abr_vc_table->rdf = 0x0003;
- abr_vc_table->air = 0x5eb1;
- }
- // Drain the packets
- rx_dle_intr(vcc->dev);
- iadev->rx_open[vcc->vci] = 0;
- }
- kfree(INPH_IA_VCC(vcc));
- ia_vcc = NULL;
- INPH_IA_VCC(vcc) = NULL;
- clear_bit(ATM_VF_ADDR,&vcc->flags);
- return;
- }
-
- static int ia_open(struct atm_vcc *vcc, short vpi, int vci)
- {
- IADEV *iadev;
- struct ia_vcc *ia_vcc;
- int error;
- if (!test_bit(ATM_VF_PARTIAL,&vcc->flags))
- {
- IF_EVENT(printk("ia: not partially allocated resourcesn");)
- INPH_IA_VCC(vcc) = NULL;
- }
- iadev = INPH_IA_DEV(vcc->dev);
- error = atm_find_ci(vcc, &vpi, &vci);
- if (error)
- {
- printk("iadev: atm_find_ci returned error %dn", error);
- return error;
- }
- vcc->vpi = vpi;
- vcc->vci = vci;
- if (vci != ATM_VPI_UNSPEC && vpi != ATM_VCI_UNSPEC)
- {
- IF_EVENT(printk("iphase open: unspec partn");)
- set_bit(ATM_VF_ADDR,&vcc->flags);
- }
- if (vcc->qos.aal != ATM_AAL5)
- return -EINVAL;
- IF_EVENT(printk(DEV_LABEL "(itf %d): open %d.%dn",
- vcc->dev->number, vcc->vpi, vcc->vci);)
-
- /* Device dependent initialization */
- ia_vcc = kmalloc(sizeof(*ia_vcc), GFP_KERNEL);
- if (!ia_vcc) return -ENOMEM;
- INPH_IA_VCC(vcc) = ia_vcc;
-
- if ((error = open_rx(vcc)))
- {
- IF_EVENT(printk("iadev: error in open_rx, closingn");)
- ia_close(vcc);
- return error;
- }
-
- if ((error = open_tx(vcc)))
- {
- IF_EVENT(printk("iadev: error in open_tx, closingn");)
- ia_close(vcc);
- return error;
- }
-
- set_bit(ATM_VF_READY,&vcc->flags);
- #ifndef MODULE
- {
- static u8 first = 1;
- if (first) {
- ia_timer.expires = jiffies + 3*HZ;
- add_timer(&ia_timer);
- first = 0;
- }
- }
- #endif
- IF_EVENT(printk("ia open returningn");)
- return 0;
- }
-
- static int ia_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flags)
- {
- IF_EVENT(printk(">ia_change_qosn");)
- return 0;
- }
-
- static int ia_ioctl(struct atm_dev *dev, unsigned int cmd, void *arg)
- {
- IA_CMDBUF ia_cmds;
- IADEV *iadev;
- int i, board;
- u16 *tmps;
- IF_EVENT(printk(">ia_ioctln");)
- 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;
- iadev = ia_dev[board];
- switch (ia_cmds.cmd) {
- case MEMDUMP:
- {
- switch (ia_cmds.sub_cmd) {
- case MEMDUMP_DEV:
- if (!capable(CAP_NET_ADMIN)) return -EPERM;
- if (copy_to_user(ia_cmds.buf, iadev, sizeof(IADEV)))
- return -EFAULT;
- ia_cmds.status = 0;
- break;
- case MEMDUMP_SEGREG:
- if (!capable(CAP_NET_ADMIN)) return -EPERM;
- tmps = (u16 *)ia_cmds.buf;
- for(i=0; i<0x80; i+=2, tmps++)
- if(put_user(*(u16*)(iadev->seg_reg+i), tmps)) return -EFAULT;
- ia_cmds.status = 0;
- ia_cmds.len = 0x80;
- break;
- case MEMDUMP_REASSREG:
- if (!capable(CAP_NET_ADMIN)) return -EPERM;
- tmps = (u16 *)ia_cmds.buf;
- for(i=0; i<0x80; i+=2, tmps++)
- if(put_user(*(u16*)(iadev->reass_reg+i), tmps)) return -EFAULT;
- ia_cmds.status = 0;
- ia_cmds.len = 0x80;
- break;
- case MEMDUMP_FFL:
- {
- ia_regs_t regs_local;
- ffredn_t *ffL = ®s_local.ffredn;
- rfredn_t *rfL = ®s_local.rfredn;
-
- if (!capable(CAP_NET_ADMIN)) return -EPERM;
- /* Copy real rfred registers into the local copy */
- for (i=0; i<(sizeof (rfredn_t))/4; i++)
- ((u_int *)rfL)[i] = ((u_int *)iadev->reass_reg)[i] & 0xffff;
- /* Copy real ffred registers into the local copy */
- for (i=0; i<(sizeof (ffredn_t))/4; i++)
- ((u_int *)ffL)[i] = ((u_int *)iadev->seg_reg)[i] & 0xffff;
- if (copy_to_user(ia_cmds.buf, ®s_local,sizeof(ia_regs_t)))
- return -EFAULT;
- printk("Board %d registers dumpedn", 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 0x6:
- {
- ia_cmds.status = 0;
- printk("skb = 0x%lxn", (long)skb_peek(&iadev->tx_backlog));
- printk("rtn_q: 0x%lxn",(long)ia_deque_rtn_q(&iadev->tx_return_q));
- }
- break;
- case 0x8:
- {
- struct k_sonet_stats *stats;
- stats = &PRIV(_ia_dev[board])->sonet_stats;
- printk("section_bip: %dn", atomic_read(&stats->section_bip));
- printk("line_bip : %dn", atomic_read(&stats->line_bip));
- printk("path_bip : %dn", atomic_read(&stats->path_bip));
- printk("line_febe : %dn", atomic_read(&stats->line_febe));
- printk("path_febe : %dn", atomic_read(&stats->path_febe));
- printk("corr_hcs : %dn", atomic_read(&stats->corr_hcs));
- printk("uncorr_hcs : %dn", atomic_read(&stats->uncorr_hcs));
- printk("tx_cells : %dn", atomic_read(&stats->tx_cells));
- printk("rx_cells : %dn", atomic_read(&stats->rx_cells));
- }
- ia_cmds.status = 0;
- break;
- case 0x9:
- 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 0xb:
- if (!capable(CAP_NET_ADMIN)) return -EPERM;
- IaFrontEndIntr(iadev);
- break;
- case 0xa:
- if (!capable(CAP_NET_ADMIN)) return -EPERM;
- {
- ia_cmds.status = 0;
- IADebugFlag = ia_cmds.maddr;
- printk("New debug option loadedn");
- }
- break;
- default:
- ia_cmds.status = 0;
- break;
- }
- }
- break;
- default:
- break;
- }
- return 0;
- }
-
- static int ia_getsockopt(struct atm_vcc *vcc, int level, int optname,
- void *optval, int optlen)
- {
- IF_EVENT(printk(">ia_getsockoptn");)
- return -EINVAL;
- }
-
- static int ia_setsockopt(struct atm_vcc *vcc, int level, int optname,
- void *optval, int optlen)
- {
- IF_EVENT(printk(">ia_setsockoptn");)
- return -EINVAL;
- }
-
- static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) {
- IADEV *iadev;
- struct dle *wr_ptr;
- struct tx_buf_desc *buf_desc_ptr;
- int desc;
- int comp_code;
- unsigned int addr;
- int total_len, pad, last;
- 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 VCn");
- 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 sizen");
- if (vcc->pop)
- vcc->pop(vcc, skb);
- else
- dev_kfree_skb_any(skb);
- return 0;
- }
- if ((u32)skb->data & 3) {
- printk("Misaligned SKBn");
- 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 == 0xffff)
- return 1;
- comp_code = desc >> 13;
- desc &= 0x1fff;
-
- if ((desc == 0) || (desc > iadev->num_tx_desc))
- {
- IF_ERR(printk(DEV_LABEL "invalid desc for send: %dn", 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 errorn",
- 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);
- last = total_len - (total_len/48)*48;
- pad = 48 - last;
- total_len = pad + total_len;
- IF_TX(printk("ia packet len:%d padding:%dn", total_len, pad);)
-
- /* Put the packet in a tx buffer */
- if (!iadev->tx_buf[desc-1])
- printk("couldn't get free pagen");
- IF_TX(printk("Sent: skb = 0x%x skb->data: 0x%x len: %d, desc: %dn",
- (u32)skb, (u32)skb->data, skb->len, desc);)
- addr = virt_to_bus(skb->data);
- trailer = (struct cpcs_trailer*)iadev->tx_buf[desc-1];
- trailer->control = 0;
- /*big endian*/
- trailer->length = ((skb->len & 0xff) << 8) | ((skb->len & 0xff00) >> 8);
- trailer->crc32 = 0; /* not needed - dummy bytes */
- /* Display the packet */
- IF_TXPKT(printk("Sent data: len = %d MsgNum = %dn",
- skb->len, tcnter++);
- xdump(skb->data, skb->len, "TX: ");
- printk("n");)
- /* Build the buffer descriptor */
- buf_desc_ptr = (struct tx_buf_desc *)(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;
- 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 = addr;
- wr_ptr->local_pkt_addr = (buf_desc_ptr->buf_start_hi << 16) |
- buf_desc_ptr->buf_start_lo;
- /* wr_ptr->bytes = swap(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) == 0xb)
- wr_ptr->bytes = 0x30;
- 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 = virt_to_bus(iadev->tx_buf[desc-1]);
- 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 donen");)
- return 0;
- }
- static int ia_send(struct atm_vcc *vcc, struct sk_buff *skb)
- {
- IADEV *iadev;
- struct ia_vcc *iavcc;
- unsigned long flags;
- iadev = INPH_IA_DEV(vcc->dev);
- iavcc = INPH_IA_VCC(vcc);
- if ((!skb)||(skb->len>(iadev->tx_buf_sz-sizeof(struct cpcs_trailer))))
- {
- if (!skb)
- printk(KERN_CRIT "null skb in ia_sendn");
- 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_sg_send(struct atm_vcc *vcc, unsigned long start,
- unsigned long size)
- {
- IF_EVENT(printk(">ia_sg_sendn");)
- 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-128Kn");
- 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 == 0x40000)
- 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, "512Kn");
- else
- n += sprintf(tmpPtr, "128Kn");
- return n;
- }
- if (!left) {
- return sprintf(page, " Number of Tx Buffer: %un"
- " Size of Tx Buffer : %un"
- " Number of Rx Buffer: %un"
- " Size of Rx Buffer : %un"
- " Packets Receiverd : %un"
- " Packets Transmitted: %un"
- " Cells Received : %un"
- " Cells Transmitted : %un"
- " Board Dropped Cells: %un"
- " Board Dropped Pkts : %un",
- 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,
- getsockopt: ia_getsockopt,
- setsockopt: ia_setsockopt,
- send: ia_send,
- sg_send: ia_sg_send,
- phy_put: ia_phy_put,
- phy_get: ia_phy_get,
- change_qos: ia_change_qos,
- proc_read: ia_proc_read,
- owner: THIS_MODULE,
- };
-
-
- #if LINUX_VERSION_CODE >= 0x20312
- int __init ia_detect(void)
- #else
- __initfunc(int ia_detect(void))
- #endif
- {
- struct atm_dev *dev;
- IADEV *iadev;
- unsigned long flags;
- int index = 0;
- struct pci_dev *prev_dev;
- if (!pci_present()) {
- printk(KERN_ERR DEV_LABEL " driver but no PCI BIOS ?n");
- return 0;
- }
- iadev = kmalloc(sizeof(*iadev), GFP_KERNEL);
- if (!iadev) return -ENOMEM;
- memset((char*)iadev, 0, sizeof(*iadev));
- prev_dev = NULL;
- while((iadev->pci = pci_find_device(PCI_VENDOR_ID_IPHASE,
- PCI_DEVICE_ID_IPHASE_5575, prev_dev))) {
- IF_INIT(printk("ia detected at bus:%d dev: %d function:%dn",
- iadev->pci->bus->number, PCI_SLOT(iadev->pci->devfn),
- PCI_FUNC(iadev->pci->devfn));)
- if (pci_enable_device(iadev->pci)) break;
- dev = atm_dev_register(DEV_LABEL, &ops, -1, NULL);
- if (!dev) break;
- IF_INIT(printk(DEV_LABEL "registered at (itf :%d)n",
- dev->number);)
- INPH_IA_DEV(dev) = iadev;
- // TODO: multi_board using ia_boards logic in cleanup_module
- ia_dev[index] = iadev;
- _ia_dev[index] = dev;
- IF_INIT(printk("dev_id = 0x%x iadev->LineRate = %d n",
- (u32)dev, iadev->LineRate);)
- iadev_count++;
- spin_lock_init(&iadev->misc_lock);
- spin_lock_irqsave(&iadev->misc_lock, flags);
- if (ia_init(dev) || ia_start(dev)) {
- atm_dev_deregister(dev);
- IF_INIT(printk("IA register failed!n");)
- ia_dev[index] = NULL;
- _ia_dev[index] = NULL;
- iadev_count--;
- spin_unlock_irqrestore(&iadev->misc_lock, flags);
- return -EINVAL;
- }
- spin_unlock_irqrestore(&iadev->misc_lock, flags);
- IF_EVENT(printk("iadev_count = %dn", iadev_count);)
- prev_dev = iadev->pci;
- iadev->next_board = ia_boards;
- ia_boards = dev;
- iadev = kmalloc(sizeof(*iadev), GFP_KERNEL);
- if (!iadev) break;
- memset((char*)iadev, 0, sizeof(*iadev));
- index++;
- dev = NULL;
- }
- return index;
- }
-
- #ifdef MODULE
-
- int init_module(void)
- {
- IF_EVENT(printk(">ia init_modulen");)
- if (!ia_detect()) {
- printk(KERN_ERR DEV_LABEL ": no adapter foundn");
- return -ENXIO;
- }
- ia_timer.expires = jiffies + 3*HZ;
- add_timer(&ia_timer);
-
- return 0;
- }
-
-
- void cleanup_module(void)
- {
- struct atm_dev *dev;
- IADEV *iadev;
- unsigned short command;
- int i, j= 0;
-
- IF_EVENT(printk(">ia cleanup_modulen");)
- if (MOD_IN_USE)
- printk("ia: module in usen");
- del_timer(&ia_timer);
- while(ia_dev[j])
- {
- dev = ia_boards;
- iadev = INPH_IA_DEV(dev);
- ia_boards = iadev->next_board;
-
- /* disable interrupt of lost signal */
- ia_phy_put(dev, ia_phy_get(dev,0x10) & ~(0x4), 0x10);
- udelay(1);
- /* De-register device */
- atm_dev_deregister(dev);
- IF_EVENT(printk("iav deregistered at (itf:%d)n", dev->number);)
- for (i= 0; i< iadev->num_tx_desc; i++)
- kfree(iadev->tx_buf[i]);
- kfree(iadev->tx_buf);
- /* Disable memory mapping and busmastering */
- if (pci_read_config_word(iadev->pci,
- PCI_COMMAND, &command) != 0)
- {
- printk("ia: can't read PCI_COMMAND.n");
- }
- command &= ~(PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
- if (pci_write_config_word(iadev->pci,
- PCI_COMMAND, command) != 0)
- {
- printk("ia: can't write PCI_COMMAND.n");
- }
- free_irq(iadev->irq, dev);
- iounmap((void *) iadev->base);
- kfree(iadev);
- j++;
- }
- /* and voila whatever we tried seems to work. I don't know if it will
- fix suni errors though. Really doubt that. */
- for (i = 0; i<8; i++) {
- ia_dev[i] = NULL;
- _ia_dev[i] = NULL;
- }
- }
- #endif