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tn7atm.c
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/****************************************************************************************
* tn7atm.c
* Linux atm module implementation.
* Zhicheng Tang 01/08/2003
* 2003 (c) Texas Instruments Inc.
*
* 01/17/05 AV Fixed the clock selection based on the DHAL
* version in tn7atm_autoDetectDspBoost().
* 02/16/05 CPH Added Ohio250 clock support.
* 03/19/05 CPH Added Inter-Op DSL phy Control.
* 04/22/05 AV Changed the default value of the SAR Interrupt pacing
* to 4 from 2 for Ohio250 to reflect the change in the
* IPACEP register in the BasePSP. (MR 2344).
* 05/10/05 AV Added support for the proc file for exporting the
* different training modes.(CQ9605).
* 05/23/05 AV Fixing the reported ability for the chip to be able to
* support ADSL2/ADSL2+ and Re-ADSL modes.
* 06/29/05 SAN Added a delay of 10 ms before resing the trimReg register.
* 07/26/05 AV Integrating the NSP changes for the packet detection. These
* changes can be disabled by defining the __NO__VOICE_PATCH__ macro.
* 08/10/05 CPH CQ9776 (partial) Added proc avsar_SNRpsds & avsar_QLNpsds.
* 08/15/05 AV Added two functions to set and get the capability of the chip,
* tn7atm_read_can_support_adsl2 and tn7atm_set_can_support_adsl2.
* 08/24/05 AV Removed disabling of the queue for upstream performance in Annex M.
* 09/01/05 AV Adding Instrumentation code for some of the key functions.(CQ 9907).
* 09/06/05 AV Adding support for VBR-rt and VBR-nrt modes.(CQ9808).
* 09/13/05 AV Relocating the turbodsl code here, as the source code has to be released.
* 09/21/05 AV Renamed the overloaded memcmp and memcpy functions to
* tn7atm_memcmp and tn7atm_memcpy respectively to allow support
* for being compiled directly into the kernel.
* 9/22/05 AV Adding support for the new LED driver in BasePSP 7.4. A new macro TN7DSL_LED_ACTION
* has been used to replace the direct calls to the old LED handler.
* 10/04/05 CPH Added new (1.61v) 7100 support
* 10/07/05 AV/CPH Changed compile time selection of dslhal_api_getQLNpsds() dslhal_api_getSNRpsds()
* and for code size reduction.
* 11/03/05 CPH Added ClearEoc ACK.
* 11/07/05 CPH/ZChang Change 'sbk' to 'skb' in tn7atm_send() TIATM_INST_SUPP. (was typo)
* 11/20/05 CT CQ10076 - Added code to report chipset ID to avsar_ver
* in the proc file system
*
* 12/07/05 AV Added a check in the tn7atm_init() to verify that the dslhal_api_boostDspFrequency()
* was able to boost the frequency of the DSP and SAR.
* 01/25/06 JZ CQ: 10273 Aztech/Singtel oam pvc management issue, new PDSP 0.54
* 01/25/06 JZ CQ: 10275 Add Remote Data Log code. Search ADV_DIAG_STATS in ATM
* driver code and manually turn on it for enabling the feature
* 02/04/06 CPH CQ10280: Add DSL_PHY_CNTL_0 and DSL_PHY_CNTL_1 support
* UR8_MERGE_START CQ10450 Jack Zhang
* 4/04/06 JZ CQ10450: Increase Interrupt pacing to 6 when downstream connection rate is higher than 20Mbps
* UR8_MERGE_END CQ10450*
* UR8_MERGE_START CQ10682 Jack Zhang
* 6/15/06 JZ CQ10682: Display ADSL training messages in ATM driver proc file system
* UR8_MERGE_END CQ10682*
* UR8_MERGE_START CQ10700 Manjula K
* 07/24/06 MK CQ10700: Added counters for reporting packets dropped by ATM Driver/SAR
* UR8_MERGE_END CQ10700
* UR8_MERGE_START CQ10979 Jack Zhang
* 10/4/06 JZ CQ10979: Request for TR-069 Support for RP7.1
* UR8_MERGE_END CQ10979*
* UR8_MERGE_START CQ11057 Jack Zhang
* 11/03/06 JZ CQ11057: Request US PMD test parameters from CO side
* UR8_MERGE_END CQ11057*
* UR8_MERGE_START CQ11813 Hao-Ting Lin
* 06/08/07 Hao-Ting CQ11813: CLI redirect support in Linux
* Add read and init funciton for Cli redirect
* UR8_MERGE_END CQ11813
* 09/18/07 CPH CQ11466 Added EFM Support
*********************************************************************************************/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/atmdev.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/smp_lock.h>
#include <asm/io.h>
#include <asm/mips-boards/prom.h>
#include <linux/proc_fs.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include "dsl_hal_api.h"
#ifdef AR7_EFM
#include "tn7efm.h"
#endif
#include "tn7atm.h"
#include "tn7api.h"
#include "version.h"
#define _SIZE_T_
#include "dsl_hal_register.h"
#ifdef MODULE
MODULE_DESCRIPTION ("Tnetd73xx ATM Device Driver");
MODULE_AUTHOR ("Zhicheng Tang");
#endif
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
#define STOP_EMPTY_BUFF 2
#define START_EMPTY_BUFF 3
/* externs */
/*end of externs */
#ifndef TI_STATIC_ALLOCATIONS
#define TI_STATIC_ALLOCATIONS
#endif
#define tn7atm_kfree_skb(x) dev_kfree_skb(x)
#ifdef AR7_EFM
extern void tn7dsl_disable_alarm(void);
extern int tn7efm_proc_channels (char *buf, char **start,
off_t offset, int count, int *eof, void *data);
extern int tn7efm_proc_ctrl_read (char *buf, char **start, off_t offset, int count, int *eof, void *data);
extern int tn7efm_proc_ctrl_write (struct file *fp, const char *buf, unsigned long count, void *data);
extern int tn7efm_proc_info (char *buf, char **start, off_t offset, int count, int *eof, void *data);
extern unsigned int g_efm_proc_ctl;
extern struct net_device *mydev_efm;
extern Tn7AtmPrivate *mypriv;
#endif
extern unsigned int SAR_FREQUNCY;
static int CanSuppADSL2 = TRUE;
static int EnableQoS = FALSE;
/* prototypes */
static int tn7atm_set_can_support_adsl2 (int can);
static int tn7atm_open (struct atm_vcc *vcc, short vpi, int vci);
void tn7atm_close (struct atm_vcc *vcc);
static int tn7atm_ioctl (struct atm_dev *dev, unsigned int cmd, void *arg);
static int tn7atm_send (struct atm_vcc *vcc, struct sk_buff *skb);
static int tn7atm_change_qos (struct atm_vcc *vcc, struct atm_qos *qos,
int flags);
static int tn7atm_detect (void);
static int tn7atm_init (struct atm_dev *dev);
#ifdef AR7_EFM
int tn7atm_irq_request (struct atm_dev *dev);
extern int tn7efm_register (Tn7AtmPrivate * priv);
#else
static int tn7atm_irq_request (struct atm_dev *dev);
#endif
static int tn7atm_proc_version (char *buf, char **start, off_t offset,
int count, int *eof, void *data);
static void tn7atm_exit (void);
static int tn7atm_proc_channels (char *buf, char **start, off_t offset,
int count, int *eof, void *data);
static int tn7atm_proc_private (char *buf, char **start, off_t offset,
int count, int *eof, void *data);
inline static int tn7atm_queue_packet_to_sar (void *vcc1, void *skb1,
int chan);
static int tn7atm_xlate_proc_name (const char *name,
struct proc_dir_entry **ret,
const char **residual);
static int tn7atm_proc_match (int len, const char *name,
struct proc_dir_entry *de);
static int tn7atm_proc_qos_read (char *buf, char **start, off_t offset,
int count, int *eof, void *data);
static int tn7atm_proc_qos_write (struct file *fp, const char *buf,
unsigned long count, void *data);
// [KT]
static int tn7atm_proc_turbodsl_read (char *buf, char **start, off_t offset,
int count, int *eof, void *data);
static int tn7atm_proc_turbodsl_write (struct file *fp, const char *buf,
unsigned long count, void *data);
//CT - Added function to return chipset Id
void tn7atm_get_chipsetId (char *pVerId);
/*
*
* Turbo DSL Implementaion
*
* Zhicheng Tang ztang@ti.com
*
* 2003 (c) Texas Instruments Inc.
*
*/
/* defines and variables */
#define RFC2684_BRIDGED_HDR_SIZE 10
unsigned char LLC_BRIDGED_HEADER_2684[RFC2684_BRIDGED_HDR_SIZE] =
{0xAA, 0xAA, 0x03, 0x00, 0x80, 0xC2, 0x00, 0x07, 0x00, 0x00};
#define RFC2684_ROUTED_HDR_SIZE 6
unsigned char LLC_ROUTED_HEADER_2684[6] ={0xAA, 0xAA, 0x03, 0x00, 0x00, 0x00};
unsigned long PPP_LLC_HEADER = 0xCF03FEFE;
/* struct definition */
enum
{
AAL5_ENCAP_PPP_LLC,
AAL5_ENCAP_PPP_VCMUX,
AAL5_ENCAP_RFC2684_LLC_BRIDGED,
AAL5_ENCAP_RFC2684_LLC_ROUTED
};
/* Etherent header */
typedef struct _turbodsl_ether_header
{
unsigned char dst_mac_addr[6];
unsigned char src_mac_addr[6];
unsigned short ether_type;
} turbodsl_ether_header_t;
/* Ip header define */
typedef struct _turbodsl_ip_header
{
unsigned short vit;
unsigned short total_length;
unsigned short ip_id;
unsigned char flag; /* bit 0 = 0, bit1 = don't fragment, bit2=more frag */
unsigned char fragment_offset; /* offset include remaining 5 bits above, which make it 13 bits */
unsigned char time_to_live;
unsigned char protocol;
unsigned short checksum;
unsigned int src_ip;
unsigned int dst_ip;
} turbodsl_ip_header_t;
/* Arp packet define */
typedef struct _turbodsl_arp_header
{
unsigned short hardware_type;
unsigned short protocol_type;
unsigned char h_len;
unsigned char p_len;
unsigned short operation ;
unsigned char snd_hw_address[6];
unsigned char snd_pt_address[4];
unsigned char dst_hw_address[6];
unsigned char dst_pt_address[4];
} turbodsl_arp_header_t;
#define FIN_FLAG 1
#define SYN_FLAG 1<<1
#define RST_FLAG 1<<2
#define PSH_FLAG 1<<3
#define ACK_FLAG 1<<4
#define URG_FLAG 1<<5
typedef struct _turbodsl_tcp_header
{
unsigned short src_port;
unsigned short dst_port;
unsigned int seq_num;
unsigned int ack_num;
unsigned char offset; /* only bits 4-7 are for offset */
unsigned char flags; /* bits: 0-FIN, 1-SYN, 2-RST, 3-PSH, 4-ACK, 5-URG */
unsigned short windows;
unsigned short checksum;
unsigned short urgent_ptr;
} turbodsl_tcp_header_t;
/* TurboDSL function declarations. */
__inline__ static int turbodsl_check_aal5_encap_type(unsigned char *pData);
static int turbodsl_check_priority_type(unsigned char *pData);
/* ATM device operations */
struct atm_dev *mydev;
#ifdef CPATM_TASKLET_MODE
void tn7atm_handle_tasklet (unsigned long data);
struct tasklet_struct tn7atm_tasklet;
#endif
#ifdef AR7_EFM
void tn7efm_handle_autoswitch_tasklet (unsigned long data);
extern unsigned int _dsl_PhyControl_0_defined;
extern unsigned int _dsl_PhyControl_0;
#endif
/* *INDENT-OFF* */
static const struct atmdev_ops tn7atm_ops = {
open: tn7atm_open,
close: tn7atm_close,
ioctl: tn7atm_ioctl,
getsockopt: NULL,
setsockopt: NULL,
send: tn7atm_send,
sg_send: NULL,
phy_put: NULL,
phy_get: NULL,
change_qos: tn7atm_change_qos,
};
const char drv_proc_root_folder[] = "avalanche/";
static struct proc_dir_entry *root_proc_dir_entry = NULL;
#define DRV_PROC_MODE 0644
static int proc_root_already_exists = TRUE;
static struct
{
const unsigned char name[32];
int (*read_func) (char* , char **, off_t , int ,int *, void *);
int (*write_func) (struct file *, const char * , unsigned long , void *);
} proc_if[] = {
#ifdef AR7_EFM
#ifdef EFM_DEBUG
{"avsar_efm_channel", tn7efm_proc_channels, NULL},
#endif
{"avsar_efm_info", tn7efm_proc_info, NULL},
{"avsar_efm_ctl", tn7efm_proc_ctrl_read, tn7efm_proc_ctrl_write},
#endif
{"avsar_ver", tn7atm_proc_version, NULL},
{"avsar_channels", tn7atm_proc_channels, NULL},
{"avsar_sarhal_stats", tn7sar_proc_sar_stat, NULL},
{"avsar_oam_ping", tn7sar_proc_oam_ping, NULL},
{"avsar_pvc_table", tn7sar_proc_pvc_table, NULL},
{"avsar_rxsnr0", tn7dsl_proc_snr0, NULL},
{"avsar_rxsnr1", tn7dsl_proc_snr1, NULL},
{"avsar_rxsnr2", tn7dsl_proc_snr2, NULL},
{"clear_eoc_stats", tn7dsl_proc_eoc, NULL},
{"avsar_bit_allocation_table", tn7dsl_proc_bit_allocation, NULL},
{"avsar_dsl_modulation_schemes",tn7dsl_proc_train_mode_export, NULL},
#ifndef NO_ADV_STATS
{"avsar_SNRpsds", tn7dsl_proc_SNRpsds, NULL},
{"avsar_QLNpsds", tn7dsl_proc_QLNpsds, NULL},
// * UR8_MERGE_START CQ10979 Jack Zhang
#ifdef TR69_HLIN_IN
// {"avsar_HLINpsds", tn7dsl_proc_HLINpsds, NULL},
{"avsar_HLINpsds1", tn7dsl_proc_HLINpsds1, NULL},
{"avsar_HLINpsds2", tn7dsl_proc_HLINpsds2, NULL},
{"avsar_HLINpsds3", tn7dsl_proc_HLINpsds3, NULL},
{"avsar_HLINpsds4", tn7dsl_proc_HLINpsds4, NULL},
#endif //TR69_HLIN_IN
// * UR8_MERGE_END CQ10979*
// * UR8_MERGE_START CQ11057 Jack Zhang
#define TR69_PMD_IN
#ifdef TR69_PMD_IN
{"avsar_PMDTestus", tn7dsl_proc_PMDus, NULL},
// {"avsar_PMDTestus1", tn7dsl_proc_PMDus1, NULL},
#endif //TR69_PMD_IN
// * UR8_MERGE_END CQ11057 *
#endif
{"avsar_private", tn7atm_proc_private, NULL},
{"avsar_modem_training", tn7dsl_proc_modem, NULL},
{"avsar_modem_stats", tn7dsl_proc_stats, tn7dsl_proc_write_stats},
#ifdef ADV_DIAG_STATS //CQ10275
//for 2.6 {"avsar_modem_adv_stats", tn7dsl_proc_adv_stats, NULL},
//For 2.4 kernel, due to proc file system size limitation
{"avsar_modem_adv_stats1", tn7dsl_proc_adv_stats1, NULL},
{"avsar_modem_adv_stats2", tn7dsl_proc_adv_stats2, NULL},
{"avsar_modem_adv_stats3", tn7dsl_proc_adv_stats3, NULL},
//UR8_MERGE_START CQ10682 Jack Zhang
{"avsar_modem_dbg_cmsgs", tn7dsl_proc_dbg_cmsgs, NULL},
{"avsar_modem_dbg_rmsgs1", tn7dsl_proc_dbg_rmsgs1, NULL},
{"avsar_modem_dbg_rmsgs2", tn7dsl_proc_dbg_rmsgs2, NULL},
{"avsar_modem_dbg_rmsgs3", tn7dsl_proc_dbg_rmsgs3, NULL},
{"avsar_modem_dbg_rmsgs4", tn7dsl_proc_dbg_rmsgs4, NULL},
// UR8_MERGE_END CQ10682*
#endif //ADV_DIAG_STATS
//UR8_MERGE_START CQ11813 Hao-Ting
#ifdef LINUX_CLI_SUPPORT
{"avsar_dbg_enable", tn7dsl_proc_dbgmsg_read, tn7dsl_proc_dbgmsg_write},
#endif
//UR8_MERGE_END CQ11813
{"avsar_qos_enable", tn7atm_proc_qos_read, tn7atm_proc_qos_write},
#if 1 /* [MS] */
{"avsar_turbodsl", tn7atm_proc_turbodsl_read, tn7atm_proc_turbodsl_write}
#endif
};
/* *INDENT-ON* */
static unsigned int ATM_DSL_INT;
unsigned int def_sar_inter_pace;
int __guDbgLevel = 0;
//[MS]
static int bTurboDsl = 1;
//static spinlock_t chan_init_lock;
#ifdef DEBUG_BUILD
void xadump (unsigned char *buff, int len, int debugLev)
{
int i, j;
if (__guDbgLevel < debugLev)
return;
j = 0;
for (i = 0; i < len; i++)
{
printk ("%02x ", buff[i]);
j++;
if (j == 8)
{
j = 0;
printk ("\n");
}
}
printk ("\n");
}
#endif
/* Optimized memcpy for 32-bit processors. */
void * tn7atm_memcpy(void * dst, void const * src, size_t len)
{
long * plDst = (long *) dst;
long const * plSrc = (long const *) src;
char * pcDst;
char const * pcSrc;
if (!((int)src & 0xFFFFFFFC) && !((int)dst & 0xFFFFFFFC))
{
while (len >= 4)
{
*plDst++ = *plSrc++;
len -= 4;
}
}
pcDst = (char *) plDst;
pcSrc = (char const *) plSrc;
while (len--)
{
*pcDst++ = *pcSrc++;
}
return (dst);
}
/* Optimized memcmp for 32-bit processors. */
int tn7atm_memcmp(void * dst, void const * src, size_t len)
{
long * plDst = (long *) dst;
long const * plSrc = (long const *) src;
char * pcDst;
char const * pcSrc;
if (!((int)src & 0xFFFFFFFC) && !((int)dst & 0xFFFFFFFC))
{
while (len >= 4)
{
if(*plDst++ != *plSrc++)
return -1; /* Not equal*/
len -= 4;
}
}
pcDst = (char *) plDst;
pcSrc = (char const *) plSrc;
while (len--)
{
if(*pcDst++ != *pcSrc++)
return -1; /* Not equal*/
}
/* They are equal */
return 0;
}
/* Moved these definitions here for all modules to use. */
__inline__ void tn7atm_data_invalidate(void *pmem, int size)
{
unsigned int i,Size=(((unsigned int)pmem)&0xf)+size;
if(!pmem)
return;
for (i=0;i<Size;i+=16,pmem+=16)
{
__asm__(" .set mips3 ");
__asm__("cache 17, (%0)" : : "r" (pmem));
__asm__(" .set mips0 ");
}
}
__inline__ void tn7atm_data_writeback(void *pmem, int size)
{
unsigned int i,Size=(((unsigned int)pmem)&0xf)+size;
if(!pmem)
return;
for (i=0;i<Size;i+=16,pmem+=16)
{
__asm__(" .set mips3 ");
__asm__(" cache 25, (%0)" : : "r" (pmem));
__asm__(" .set mips0 ");
}
}
/***************************************************************************
* Turbo DSL Implementaion
*
* Zhicheng Tang ztang@ti.com
*
* 2003 (c) Texas Instruments Inc.
*
* Function: turbodsl_check_aal5_encap_type
* Descripation: Determine AAL5 Encapsulation type
* Input:
* unsigned char *pData, AAL5 Packet buffer pointer
****************************************************************************/
__inline__ static int turbodsl_check_aal5_encap_type(unsigned char *pData)
{
if(!tn7atm_memcmp(pData, LLC_BRIDGED_HEADER_2684, 6))
return AAL5_ENCAP_RFC2684_LLC_BRIDGED;
if(!tn7atm_memcmp(pData, LLC_ROUTED_HEADER_2684, 6))
return AAL5_ENCAP_RFC2684_LLC_ROUTED;
if(!tn7atm_memcmp(pData, (unsigned char *)&PPP_LLC_HEADER, sizeof(PPP_LLC_HEADER)))
return AAL5_ENCAP_PPP_LLC;
return AAL5_ENCAP_PPP_VCMUX;
}
/***************************************************************************
* Turbo DSL Implementaion
*
* Zhicheng Tang ztang@ti.com
*
* 2003 (c) Texas Instruments Inc.
*
* Function: turbodsl_check_priority_type
* Descripation: Determine AAL5 Encapsulation type
* Input:
* unsigned char *pData, AAL5 Packet buffer pointer.
* short vpi, VPI.
* int vci, VCI
****************************************************************************/
static int turbodsl_check_priority_type(unsigned char *pData)
{
/* int encap;*/
unsigned char *pP;
unsigned short etherType;
turbodsl_ip_header_t *pIp;
turbodsl_tcp_header_t *pTcp;
/* unsigned short ip_length;*/
dgprintf(2, "turbodsl_check_priority_type ==>\n");
/*** Viren: Eliminated local VAriable */
/* encap = turbodsl_check_aal5_encap_type(pData); */
pP = pData;
switch(turbodsl_check_aal5_encap_type(pData))
{
case AAL5_ENCAP_RFC2684_LLC_BRIDGED:
pP += RFC2684_BRIDGED_HDR_SIZE; //skip off aal5 encap
pP += 12; //skip of mac address
etherType = *(unsigned short *)pP;
if((etherType != 0x6488) && (etherType != 0x0008))
{
//Not an IP packet
return 1;
}
pP +=2; //skip ether type
if(etherType == 0x6488)
{
#if 1 /* [MS] PPPoE header + PPP header = 8 bytes */
pP += 8;
#else
pP += 6;
#endif
}
break;
case AAL5_ENCAP_RFC2684_LLC_ROUTED:
pP += RFC2684_ROUTED_HDR_SIZE; //skip of encap
pP += 2; //skip ether type
break;
case AAL5_ENCAP_PPP_LLC:
pP += sizeof(PPP_LLC_HEADER);
if((*pP == 0xff) && (*(pP+1) == 0x03)) //ppp hdlc header
pP += 2;
break;
case AAL5_ENCAP_PPP_VCMUX:
if((*pP == 0xff) && (*(pP+1) == 0x03)) //ppp hdlc header
pP += 2;
break;
default:
return 1;
}
pIp = (turbodsl_ip_header_t *)pP;
if(pIp->vit != 0x0045)
{
//Not a IP packet
return 1;
}
if(pIp->protocol != 0x06)
{
//not tcp packet
return 1;
}
pTcp = (turbodsl_tcp_header_t *)(pP + sizeof(turbodsl_ip_header_t));
/*** Viren: not required ***/
/*ip_length = ((pIp->total_length>>8) + (pIp->total_length<<8));*/
#if 1 /* [MS] */
if((pTcp->flags & ACK_FLAG) && (((unsigned short)(pIp->total_length>>8) + (unsigned short)(pIp->total_length<<8)) <=40))
#else
if((pTcp->flags & ACK_FLAG) && (((pIp->total_length>>8) + (pIp->total_length<<8)) <=40))
#endif
return 0;
return 1;
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* Function: int tn7atm_walk_vccs(struct atm_dev *dev, short *vcc, int *vci)
*
* Description: retrieve VPI/VCI for connection
*
*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
static int tn7atm_walk_vccs (struct atm_vcc *vcc, short *vpi, int *vci)
{
struct atm_vcc *walk;
/*
* find a free VPI
*/
if (*vpi == ATM_VPI_ANY)
{
for (*vpi = 0, walk = vcc->dev->vccs; walk; walk = walk->next)
{
if ((walk->vci == *vci) && (walk->vpi == *vpi))
{
(*vpi)++;
walk = vcc->dev->vccs;
}
}
}
/*
* find a free VCI
*/
if (*vci == ATM_VCI_ANY)
{
for (*vci = ATM_NOT_RSV_VCI, walk = vcc->dev->vccs; walk;
walk = walk->next)
{
if ((walk->vpi = *vpi) && (walk->vci == *vci))
{
*vci = walk->vci + 1;
walk = vcc->dev->vccs;
}
}
}
return 0;
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* Function: int tn7atm_sar_irq(void)
*
* Description: tnetd73xx SAR interrupt.
*
*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
static void tn7atm_sar_irq (int irq, void *voiddev, struct pt_regs *regs)
{
struct atm_dev *atmdev;
Tn7AtmPrivate *priv;
int more;
int retval;
dgprintf (6, "tn7atm_sar_irq\n");
#ifdef TIATM_INST_SUPP
psp_trace (ATM_DRV_SAR_ISR_ENTER);
#endif
atmdev = (struct atm_dev *) voiddev;
priv = (Tn7AtmPrivate *) atmdev->dev_data;
#ifdef CPATM_TASKLET_MODE
tasklet_schedule (&tn7atm_tasklet);
#else
retval = tn7sar_handle_interrupt (atmdev, priv, &more);
#endif
dgprintf (6, "Leaving tn7atm_sar_irq\n");
#ifdef TIATM_INST_SUPP
psp_trace_par (ATM_DRV_SAR_ISR_EXIT, retval);
#endif
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* Function: int tn7atm_dsl_irq(void)
*
* Description: tnetd73xx DSL interrupt.
*
*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
static void tn7atm_dsl_irq (int irq, void *voiddev, struct pt_regs *regs)
{
struct atm_dev *atmdev;
Tn7AtmPrivate *priv;
int retval;
dgprintf (4, "tn7atm_dsl_irq\n");
#ifdef TIATM_INST_SUPP
psp_trace (ATM_DRV_DSL_ISR_ENTER);
#endif
atmdev = (struct atm_dev *) voiddev;
priv = (Tn7AtmPrivate *) atmdev->dev_data;
retval = tn7dsl_handle_interrupt ();
dgprintf (4, "Leaving tn7atm_dsl_irq\n");
#ifdef TIATM_INST_SUPP
psp_trace_par (ATM_DRV_DSL_ISR_EXIT, retval);
#endif
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* Function: int tn7atm_irq_request(struct atm_dev *dev)
*
* Description: Initialize Interrupt handler
*
*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
#ifdef AR7_EFM
int tn7atm_irq_request (struct atm_dev *dev)
#else
static int __init tn7atm_irq_request (struct atm_dev *dev)
#endif
{
Tn7AtmPrivate *priv;
char *ptr;
dgprintf (4, "tn7atm_irq_request()\n");
priv = (Tn7AtmPrivate *) dev->dev_data;
/*
* Register SAR interrupt
*/
priv->sar_irq = LNXINTNUM (ATM_SAR_INT); /* Interrupt line # */
if (request_irq (priv->sar_irq, tn7atm_sar_irq, SA_INTERRUPT, "SAR ", dev))
printk ("Could not register tn7atm_sar_irq\n");
/*
* interrupt pacing
*/
ptr = prom_getenv ("sar_ipacemax");
if (ptr)
{
def_sar_inter_pace = os_atoi (ptr);
}
avalanche_request_pacing (priv->sar_irq, ATM_SAR_INT_PACING_BLOCK_NUM,
def_sar_inter_pace);
#ifdef AR7_EFM
if (priv->mode_switching)
return 0; // skip following
#endif
/*
* Reigster Receive interrupt A
*/
priv->dsl_irq = LNXINTNUM (ATM_DSL_INT); /* Interrupt line # */
if (request_irq (priv->dsl_irq, tn7atm_dsl_irq, SA_INTERRUPT, "DSL ", dev))
printk ("Could not register tn7atm_dsl_irq\n");
/***** VRB Tasklet Mode ****/
#ifdef CPATM_TASKLET_MODE
tasklet_init (&tn7atm_tasklet, tn7atm_handle_tasklet, (unsigned long) dev);
#endif
/***************/
#ifdef AR7_EFM
tasklet_init (&priv->tn7efm_tasklet, tn7efm_handle_autoswitch_tasklet, (unsigned long) dev);
#endif
return 0;
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* Function: int tn7atm_lut_find(struct atm_vcc *vcc)
*
* Description: find an TX DMA channel
* that matches a vpi/vci pair
*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
int tn7atm_lut_find (short vpi, int vci)
{
int i;
Tn7AtmPrivate *priv;
priv = (Tn7AtmPrivate *) mydev->dev_data;
if (vci == 0) // find first vpi channel
{
for (i = 0; i < MAX_DMA_CHAN; i++)
{
if ((priv->lut[i].vpi == vpi))
return i;
}
}
dgprintf (4, "vpi=%d, vci=%d\n", vpi, vci);
for (i = 0; i < MAX_DMA_CHAN; i++)
{
if ((priv->lut[i].vpi == vpi) && (priv->lut[i].vci == vci))
return i;
}
return ATM_NO_DMA_CHAN;
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* Function: int tn7atm_lut_clear(struct atm_vcc *vcc,int chan)
*
* Description: find an TX DMA channel
* that matches a vpi/vci pair
*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
static int tn7atm_lut_clear (struct atm_vcc *vcc, int chan)
{
Tn7AtmPrivate *priv;
priv = (Tn7AtmPrivate *) vcc->dev->dev_data;
memset (&priv->lut[chan], 0, sizeof (priv->lut[chan]));
return 0;
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* Function: int tn7atm_walk_lut(void)
*
* Description: find an available TX DMA channel
* and initialize LUT
*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
static int tn7atm_walk_lut (Tn7AtmPrivate * priv)
{
int i;
for (i = 0; i < MAX_DMA_CHAN; i++)
{
if (!priv->lut[i].inuse)
{
return i; /* return available dma channel number */
}
}
return ATM_NO_DMA_CHAN; /* no tx dma channels available */
}
static int tn7atm_set_lut (Tn7AtmPrivate * priv, struct atm_vcc *vcc,
int chan)
{
int retval;
if (!priv->lut[chan].inuse)
{
priv->lut[chan].vpi = (int) vcc->vpi;
priv->lut[chan].vci = vcc->vci;
priv->lut[chan].chanid = chan;
priv->lut[chan].inuse = 1; /* claim the channel */
priv->lut[chan].vcc = (void *) vcc;
priv->lut[chan].bClosing = 0;
priv->lut[chan].ready = 0;
priv->lut[chan].tx_total_bufs = TX_BUFFER_NUM;
priv->lut[chan].tx_used_bufs[0] = 0;
priv->lut[chan].tx_used_bufs[1] = 0;
retval = 0;
}
else
retval = -1; /* no tx dma channels available */
return retval;
}
static void str2eaddr (char *pMac, char *pStr)
{
char tmp[3];
int i;
for (i = 0; i < 6; i++)
{
tmp[0] = pStr[i * 3];
tmp[1] = pStr[i * 3 + 1];
tmp[2] = 0;
pMac[i] = os_atoh (tmp);
}
}
static int __init tn7atm_get_ESI (struct atm_dev *dev)
{
int i;
char esi_addr[ESI_LEN] = { 0x00, 0x00, 0x11, 0x22, 0x33, 0x44 };
char *esiaddr_str = NULL;
esiaddr_str = prom_getenv ("macc");
if (!esiaddr_str)
{
// printk("Using default macc address = 00:01:02:03:04:05\n");
esiaddr_str = "00:00:02:03:04:05";
}
str2eaddr (esi_addr, esiaddr_str);
for (i = 0; i < ESI_LEN; i++)
dev->esi[i] = esi_addr[i];
return 0;
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* Function: int tn7atm_open(struct atm_vcc *vcc, short vpi, int vci)
*
* Description: Device operation: open
*
*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
/* AV: Temporary fix, till this is imported in the atm.h header file. */
/* Adding support for VBR-rt and VBR-nrt, default VBR is treated as VBR-nrt */
#ifndef ATM_VBR_NRT
#define ATM_VBR_NRT ATM_VBR
#endif
#ifndef ATM_VBR_RT
#define ATM_VBR_RT 5
#endif
int tn7atm_open (struct atm_vcc *vcc, short vpi, int vci)
{
tn7atm_activate_vc_parm_t tn7atm_activate_vc_parm;
int rc;
//int flags;
dgprintf(1, "tn7atm_open()\n");
tn7atm_activate_vc_parm.priv = (Tn7AtmPrivate *)vcc->dev->dev_data;
if(tn7atm_activate_vc_parm.priv==NULL)
{
printk("null priv\n");
return -1;
}
MOD_INC_USE_COUNT;
/* find a free VPI/VCI */
tn7atm_walk_vccs(vcc, &vpi, &vci);
vcc->vpi = vpi;
vcc->vci = vci;
if ((vci == ATM_VCI_UNSPEC) || (vpi == ATM_VCI_UNSPEC))
{
MOD_DEC_USE_COUNT;
return -EBUSY;
}
tn7atm_activate_vc_parm.vpi = vpi;
tn7atm_activate_vc_parm.vci = vci;
if ((vpi == CLEAR_EOC_VPI) && (vci == CLEAR_EOC_VCI))
{
/* always use (max_dma_chan+1) for clear eoc */
tn7atm_activate_vc_parm.chan = EOC_DMA_CHAN;
/* check to see whether clear eoc is opened or not */
if (tn7atm_activate_vc_parm.priv->lut[tn7atm_activate_vc_parm.chan].inuse)