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|
/*
* Driver for ISAC-S and ISAC-SX
* ISDN Subscriber Access Controller for Terminals
*
* Author Kai Germaschewski
* Copyright 2001 by Kai Germaschewski <kai.germaschewski@gmx.de>
* 2001 by Karsten Keil <keil@isdn4linux.de>
*
* based upon Karsten Keil's original isac.c driver
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
* Thanks to Wizard Computersysteme GmbH, Bremervoerde and
* SoHaNet Technology GmbH, Berlin
* for supporting the development of this driver
*/
/* TODO:
* specifically handle level vs edge triggered?
*/
#include <linux/module.h>
#include <linux/gfp.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include "hisax_isac.h"
// debugging cruft
#define __debug_variable debug
#include "hisax_debug.h"
#ifdef CONFIG_HISAX_DEBUG
static int debug = 1;
module_param(debug, int, 0);
static char *ISACVer[] = {
"2086/2186 V1.1",
"2085 B1",
"2085 B2",
"2085 V2.3"
};
#endif
MODULE_AUTHOR("Kai Germaschewski <kai.germaschewski@gmx.de>/Karsten Keil <kkeil@suse.de>");
MODULE_DESCRIPTION("ISAC/ISAC-SX driver");
MODULE_LICENSE("GPL");
#define DBG_WARN 0x0001
#define DBG_IRQ 0x0002
#define DBG_L1M 0x0004
#define DBG_PR 0x0008
#define DBG_RFIFO 0x0100
#define DBG_RPACKET 0x0200
#define DBG_XFIFO 0x1000
#define DBG_XPACKET 0x2000
// we need to distinguish ISAC-S and ISAC-SX
#define TYPE_ISAC 0x00
#define TYPE_ISACSX 0x01
// registers etc.
#define ISAC_MASK 0x20
#define ISAC_ISTA 0x20
#define ISAC_ISTA_EXI 0x01
#define ISAC_ISTA_SIN 0x02
#define ISAC_ISTA_CISQ 0x04
#define ISAC_ISTA_XPR 0x10
#define ISAC_ISTA_RSC 0x20
#define ISAC_ISTA_RPF 0x40
#define ISAC_ISTA_RME 0x80
#define ISAC_STAR 0x21
#define ISAC_CMDR 0x21
#define ISAC_CMDR_XRES 0x01
#define ISAC_CMDR_XME 0x02
#define ISAC_CMDR_XTF 0x08
#define ISAC_CMDR_RRES 0x40
#define ISAC_CMDR_RMC 0x80
#define ISAC_EXIR 0x24
#define ISAC_EXIR_MOS 0x04
#define ISAC_EXIR_XDU 0x40
#define ISAC_EXIR_XMR 0x80
#define ISAC_ADF2 0x39
#define ISAC_SPCR 0x30
#define ISAC_ADF1 0x38
#define ISAC_CIR0 0x31
#define ISAC_CIX0 0x31
#define ISAC_CIR0_CIC0 0x02
#define ISAC_CIR0_CIC1 0x01
#define ISAC_CIR1 0x33
#define ISAC_CIX1 0x33
#define ISAC_STCR 0x37
#define ISAC_MODE 0x22
#define ISAC_RSTA 0x27
#define ISAC_RSTA_RDO 0x40
#define ISAC_RSTA_CRC 0x20
#define ISAC_RSTA_RAB 0x10
#define ISAC_RBCL 0x25
#define ISAC_RBCH 0x2A
#define ISAC_TIMR 0x23
#define ISAC_SQXR 0x3b
#define ISAC_MOSR 0x3a
#define ISAC_MOCR 0x3a
#define ISAC_MOR0 0x32
#define ISAC_MOX0 0x32
#define ISAC_MOR1 0x34
#define ISAC_MOX1 0x34
#define ISAC_RBCH_XAC 0x80
#define ISAC_CMD_TIM 0x0
#define ISAC_CMD_RES 0x1
#define ISAC_CMD_SSP 0x2
#define ISAC_CMD_SCP 0x3
#define ISAC_CMD_AR8 0x8
#define ISAC_CMD_AR10 0x9
#define ISAC_CMD_ARL 0xa
#define ISAC_CMD_DI 0xf
#define ISACSX_MASK 0x60
#define ISACSX_ISTA 0x60
#define ISACSX_ISTA_ICD 0x01
#define ISACSX_ISTA_CIC 0x10
#define ISACSX_MASKD 0x20
#define ISACSX_ISTAD 0x20
#define ISACSX_ISTAD_XDU 0x04
#define ISACSX_ISTAD_XMR 0x08
#define ISACSX_ISTAD_XPR 0x10
#define ISACSX_ISTAD_RFO 0x20
#define ISACSX_ISTAD_RPF 0x40
#define ISACSX_ISTAD_RME 0x80
#define ISACSX_CMDRD 0x21
#define ISACSX_CMDRD_XRES 0x01
#define ISACSX_CMDRD_XME 0x02
#define ISACSX_CMDRD_XTF 0x08
#define ISACSX_CMDRD_RRES 0x40
#define ISACSX_CMDRD_RMC 0x80
#define ISACSX_MODED 0x22
#define ISACSX_RBCLD 0x26
#define ISACSX_RSTAD 0x28
#define ISACSX_RSTAD_RAB 0x10
#define ISACSX_RSTAD_CRC 0x20
#define ISACSX_RSTAD_RDO 0x40
#define ISACSX_RSTAD_VFR 0x80
#define ISACSX_CIR0 0x2e
#define ISACSX_CIR0_CIC0 0x08
#define ISACSX_CIX0 0x2e
#define ISACSX_TR_CONF0 0x30
#define ISACSX_TR_CONF2 0x32
static struct Fsm l1fsm;
enum {
ST_L1_RESET,
ST_L1_F3_PDOWN,
ST_L1_F3_PUP,
ST_L1_F3_PEND_DEACT,
ST_L1_F4,
ST_L1_F5,
ST_L1_F6,
ST_L1_F7,
ST_L1_F8,
};
#define L1_STATE_COUNT (ST_L1_F8 + 1)
static char *strL1State[] =
{
"ST_L1_RESET",
"ST_L1_F3_PDOWN",
"ST_L1_F3_PUP",
"ST_L1_F3_PEND_DEACT",
"ST_L1_F4",
"ST_L1_F5",
"ST_L1_F6",
"ST_L1_F7",
"ST_L1_F8",
};
enum {
EV_PH_DR, // 0000
EV_PH_RES, // 0001
EV_PH_TMA, // 0010
EV_PH_SLD, // 0011
EV_PH_RSY, // 0100
EV_PH_DR6, // 0101
EV_PH_EI, // 0110
EV_PH_PU, // 0111
EV_PH_AR, // 1000
EV_PH_9, // 1001
EV_PH_ARL, // 1010
EV_PH_CVR, // 1011
EV_PH_AI8, // 1100
EV_PH_AI10, // 1101
EV_PH_AIL, // 1110
EV_PH_DC, // 1111
EV_PH_ACTIVATE_REQ,
EV_PH_DEACTIVATE_REQ,
EV_TIMER3,
};
#define L1_EVENT_COUNT (EV_TIMER3 + 1)
static char *strL1Event[] =
{
"EV_PH_DR", // 0000
"EV_PH_RES", // 0001
"EV_PH_TMA", // 0010
"EV_PH_SLD", // 0011
"EV_PH_RSY", // 0100
"EV_PH_DR6", // 0101
"EV_PH_EI", // 0110
"EV_PH_PU", // 0111
"EV_PH_AR", // 1000
"EV_PH_9", // 1001
"EV_PH_ARL", // 1010
"EV_PH_CVR", // 1011
"EV_PH_AI8", // 1100
"EV_PH_AI10", // 1101
"EV_PH_AIL", // 1110
"EV_PH_DC", // 1111
"EV_PH_ACTIVATE_REQ",
"EV_PH_DEACTIVATE_REQ",
"EV_TIMER3",
};
static inline void D_L1L2(struct isac *isac, int pr, void *arg)
{
struct hisax_if *ifc = (struct hisax_if *) &isac->hisax_d_if;
DBG(DBG_PR, "pr %#x", pr);
ifc->l1l2(ifc, pr, arg);
}
static void ph_command(struct isac *isac, unsigned int command)
{
DBG(DBG_L1M, "ph_command %#x", command);
switch (isac->type) {
case TYPE_ISAC:
isac->write_isac(isac, ISAC_CIX0, (command << 2) | 3);
break;
case TYPE_ISACSX:
isac->write_isac(isac, ISACSX_CIX0, (command << 4) | (7 << 1));
break;
}
}
// ----------------------------------------------------------------------
static void l1_di(struct FsmInst *fi, int event, void *arg)
{
struct isac *isac = fi->userdata;
FsmChangeState(fi, ST_L1_RESET);
ph_command(isac, ISAC_CMD_DI);
}
static void l1_di_deact_ind(struct FsmInst *fi, int event, void *arg)
{
struct isac *isac = fi->userdata;
FsmChangeState(fi, ST_L1_RESET);
D_L1L2(isac, PH_DEACTIVATE | INDICATION, NULL);
ph_command(isac, ISAC_CMD_DI);
}
static void l1_go_f3pdown(struct FsmInst *fi, int event, void *arg)
{
FsmChangeState(fi, ST_L1_F3_PDOWN);
}
static void l1_go_f3pend_deact_ind(struct FsmInst *fi,
|