421 lines
11 KiB
C
Executable file
421 lines
11 KiB
C
Executable file
/* enternow_pci.c,v 0.99 2001/10/02
|
|
*
|
|
* enternow_pci.c Card-specific routines for
|
|
* Formula-n enter:now ISDN PCI ab
|
|
* Gerdes AG Power ISDN PCI
|
|
* Woerltronic SA 16 PCI
|
|
* (based on HiSax driver by Karsten Keil)
|
|
*
|
|
* Author Christoph Ersfeld <info@formula-n.de>
|
|
* Formula-n Europe AG (www.formula-n.com)
|
|
* previously Gerdes AG
|
|
*
|
|
*
|
|
* This file is (c) under GNU PUBLIC LICENSE
|
|
*
|
|
* Notes:
|
|
* This driver interfaces to netjet.c which performs B-channel
|
|
* processing.
|
|
*
|
|
* Version 0.99 is the first release of this driver and there are
|
|
* certainly a few bugs.
|
|
* It isn't testet on linux 2.4 yet, so consider this code to be
|
|
* beta.
|
|
*
|
|
* Please don't report me any malfunction without sending
|
|
* (compressed) debug-logs.
|
|
* It would be nearly impossible to retrace it.
|
|
*
|
|
* Log D-channel-processing as follows:
|
|
*
|
|
* 1. Load hisax with card-specific parameters, this example ist for
|
|
* Formula-n enter:now ISDN PCI and compatible
|
|
* (f.e. Gerdes Power ISDN PCI)
|
|
*
|
|
* modprobe hisax type=41 protocol=2 id=gerdes
|
|
*
|
|
* if you chose an other value for id, you need to modify the
|
|
* code below, too.
|
|
*
|
|
* 2. set debug-level
|
|
*
|
|
* hisaxctrl gerdes 1 0x3ff
|
|
* hisaxctrl gerdes 11 0x4f
|
|
* cat /dev/isdnctrl >> ~/log &
|
|
*
|
|
* Please take also a look into /var/log/messages if there is
|
|
* anything importand concerning HISAX.
|
|
*
|
|
*
|
|
* Credits:
|
|
* Programming the driver for Formula-n enter:now ISDN PCI and
|
|
* necessary the driver for the used Amd 7930 D-channel-controller
|
|
* was spnsored by Formula-n Europe AG.
|
|
* Thanks to Karsten Keil and Petr Novak, who gave me support in
|
|
* Hisax-specific questions.
|
|
* I want so say special thanks to Carl-Friedrich Braun, who had to
|
|
* answer a lot of questions about generally ISDN and about handling
|
|
* of the Amd-Chip.
|
|
*
|
|
*/
|
|
|
|
|
|
#include "hisax.h"
|
|
#include "isac.h"
|
|
#include "isdnl1.h"
|
|
#include "amd7930_fn.h"
|
|
#include <linux/interrupt.h>
|
|
#include <linux/ppp_defs.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/init.h>
|
|
#include "netjet.h"
|
|
|
|
|
|
|
|
static const char *enternow_pci_rev = "$Revision: 1.1.4.5 $";
|
|
|
|
|
|
/* for PowerISDN PCI */
|
|
#define TJ_AMD_IRQ 0x20
|
|
#define TJ_LED1 0x40
|
|
#define TJ_LED2 0x80
|
|
|
|
|
|
/* The window to [the] AMD [chip]...
|
|
* From address hw.njet.base + TJ_AMD_PORT onwards, the AMD
|
|
* maps [consecutive/multiple] 8 bits into the TigerJet I/O space
|
|
* -> 0x01 of the AMD at hw.njet.base + 0C4 */
|
|
#define TJ_AMD_PORT 0xC0
|
|
|
|
|
|
|
|
/* *************************** I/O-Interface functions ************************************* */
|
|
|
|
|
|
/* cs->readisac, macro rByteAMD */
|
|
static unsigned char
|
|
ReadByteAmd7930(struct IsdnCardState *cs, unsigned char offset)
|
|
{
|
|
/* direct register */
|
|
if (offset < 8)
|
|
return (inb(cs->hw.njet.isac + 4 * offset));
|
|
|
|
/* indirect register */
|
|
else {
|
|
outb(offset, cs->hw.njet.isac + 4 * AMD_CR);
|
|
return (inb(cs->hw.njet.isac + 4 * AMD_DR));
|
|
}
|
|
}
|
|
|
|
/* cs->writeisac, macro wByteAMD */
|
|
static void
|
|
WriteByteAmd7930(struct IsdnCardState *cs, unsigned char offset, unsigned char value)
|
|
{
|
|
/* direct register */
|
|
if (offset < 8)
|
|
outb(value, cs->hw.njet.isac + 4 * offset);
|
|
|
|
/* indirect register */
|
|
else {
|
|
outb(offset, cs->hw.njet.isac + 4 * AMD_CR);
|
|
outb(value, cs->hw.njet.isac + 4 * AMD_DR);
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
enpci_setIrqMask(struct IsdnCardState *cs, unsigned char val) {
|
|
if (!val)
|
|
outb(0x00, cs->hw.njet.base + NETJET_IRQMASK1);
|
|
else
|
|
outb(TJ_AMD_IRQ, cs->hw.njet.base + NETJET_IRQMASK1);
|
|
}
|
|
|
|
|
|
static unsigned char dummyrr(struct IsdnCardState *cs, int chan, unsigned char off)
|
|
{
|
|
return (5);
|
|
}
|
|
|
|
static void dummywr(struct IsdnCardState *cs, int chan, unsigned char off, unsigned char value)
|
|
{
|
|
|
|
}
|
|
|
|
|
|
/* ******************************************************************************** */
|
|
|
|
|
|
static void
|
|
reset_enpci(struct IsdnCardState *cs)
|
|
{
|
|
if (cs->debug & L1_DEB_ISAC)
|
|
debugl1(cs, "enter:now PCI: reset");
|
|
|
|
/* Reset on, (also for AMD) */
|
|
cs->hw.njet.ctrl_reg = 0x07;
|
|
outb(cs->hw.njet.ctrl_reg, cs->hw.njet.base + NETJET_CTRL);
|
|
mdelay(20);
|
|
/* Reset off */
|
|
cs->hw.njet.ctrl_reg = 0x30;
|
|
outb(cs->hw.njet.ctrl_reg, cs->hw.njet.base + NETJET_CTRL);
|
|
/* 20ms delay */
|
|
mdelay(20);
|
|
cs->hw.njet.auxd = 0; // LED-status
|
|
cs->hw.njet.dmactrl = 0;
|
|
outb(~TJ_AMD_IRQ, cs->hw.njet.base + NETJET_AUXCTRL);
|
|
outb(TJ_AMD_IRQ, cs->hw.njet.base + NETJET_IRQMASK1);
|
|
outb(cs->hw.njet.auxd, cs->hw.njet.auxa); // LED off
|
|
}
|
|
|
|
|
|
static int
|
|
enpci_card_msg(struct IsdnCardState *cs, int mt, void *arg)
|
|
{
|
|
u_long flags;
|
|
unsigned char *chan;
|
|
|
|
if (cs->debug & L1_DEB_ISAC)
|
|
debugl1(cs, "enter:now PCI: card_msg: 0x%04X", mt);
|
|
|
|
switch (mt) {
|
|
case CARD_RESET:
|
|
spin_lock_irqsave(&cs->lock, flags);
|
|
reset_enpci(cs);
|
|
Amd7930_init(cs);
|
|
spin_unlock_irqrestore(&cs->lock, flags);
|
|
break;
|
|
case CARD_RELEASE:
|
|
release_io_netjet(cs);
|
|
break;
|
|
case CARD_INIT:
|
|
reset_enpci(cs);
|
|
inittiger(cs);
|
|
/* irq must be on here */
|
|
Amd7930_init(cs);
|
|
break;
|
|
case CARD_TEST:
|
|
break;
|
|
case MDL_ASSIGN:
|
|
/* TEI assigned, LED1 on */
|
|
cs->hw.njet.auxd = TJ_AMD_IRQ << 1;
|
|
outb(cs->hw.njet.auxd, cs->hw.njet.base + NETJET_AUXDATA);
|
|
break;
|
|
case MDL_REMOVE:
|
|
/* TEI removed, LEDs off */
|
|
cs->hw.njet.auxd = 0;
|
|
outb(0x00, cs->hw.njet.base + NETJET_AUXDATA);
|
|
break;
|
|
case MDL_BC_ASSIGN:
|
|
/* activate B-channel */
|
|
chan = (unsigned char *)arg;
|
|
|
|
if (cs->debug & L1_DEB_ISAC)
|
|
debugl1(cs, "enter:now PCI: assign phys. BC %d in AMD LMR1", *chan);
|
|
|
|
cs->dc.amd7930.ph_command(cs, (cs->dc.amd7930.lmr1 | (*chan + 1)), "MDL_BC_ASSIGN");
|
|
/* at least one b-channel in use, LED 2 on */
|
|
cs->hw.njet.auxd |= TJ_AMD_IRQ << 2;
|
|
outb(cs->hw.njet.auxd, cs->hw.njet.base + NETJET_AUXDATA);
|
|
break;
|
|
case MDL_BC_RELEASE:
|
|
/* deactivate B-channel */
|
|
chan = (unsigned char *)arg;
|
|
|
|
if (cs->debug & L1_DEB_ISAC)
|
|
debugl1(cs, "enter:now PCI: release phys. BC %d in Amd LMR1", *chan);
|
|
|
|
cs->dc.amd7930.ph_command(cs, (cs->dc.amd7930.lmr1 & ~(*chan + 1)), "MDL_BC_RELEASE");
|
|
/* no b-channel active -> LED2 off */
|
|
if (!(cs->dc.amd7930.lmr1 & 3)) {
|
|
cs->hw.njet.auxd &= ~(TJ_AMD_IRQ << 2);
|
|
outb(cs->hw.njet.auxd, cs->hw.njet.base + NETJET_AUXDATA);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static irqreturn_t
|
|
enpci_interrupt(int intno, void *dev_id)
|
|
{
|
|
struct IsdnCardState *cs = dev_id;
|
|
unsigned char s0val, s1val, ir;
|
|
u_long flags;
|
|
|
|
spin_lock_irqsave(&cs->lock, flags);
|
|
s1val = inb(cs->hw.njet.base + NETJET_IRQSTAT1);
|
|
|
|
/* AMD threw an interrupt */
|
|
if (!(s1val & TJ_AMD_IRQ)) {
|
|
/* read and clear interrupt-register */
|
|
ir = ReadByteAmd7930(cs, 0x00);
|
|
Amd7930_interrupt(cs, ir);
|
|
s1val = 1;
|
|
} else
|
|
s1val = 0;
|
|
s0val = inb(cs->hw.njet.base + NETJET_IRQSTAT0);
|
|
if ((s0val | s1val) == 0) { // shared IRQ
|
|
spin_unlock_irqrestore(&cs->lock, flags);
|
|
return IRQ_NONE;
|
|
}
|
|
if (s0val)
|
|
outb(s0val, cs->hw.njet.base + NETJET_IRQSTAT0);
|
|
|
|
/* DMA-Interrupt: B-channel-stuff */
|
|
/* set bits in sval to indicate which page is free */
|
|
if (inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR) <
|
|
inl(cs->hw.njet.base + NETJET_DMA_WRITE_IRQ))
|
|
/* the 2nd write page is free */
|
|
s0val = 0x08;
|
|
else /* the 1st write page is free */
|
|
s0val = 0x04;
|
|
if (inl(cs->hw.njet.base + NETJET_DMA_READ_ADR) <
|
|
inl(cs->hw.njet.base + NETJET_DMA_READ_IRQ))
|
|
/* the 2nd read page is free */
|
|
s0val = s0val | 0x02;
|
|
else /* the 1st read page is free */
|
|
s0val = s0val | 0x01;
|
|
if (s0val != cs->hw.njet.last_is0) /* we have a DMA interrupt */
|
|
{
|
|
if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
|
|
spin_unlock_irqrestore(&cs->lock, flags);
|
|
return IRQ_HANDLED;
|
|
}
|
|
cs->hw.njet.irqstat0 = s0val;
|
|
if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_READ) !=
|
|
(cs->hw.njet.last_is0 & NETJET_IRQM0_READ))
|
|
/* we have a read dma int */
|
|
read_tiger(cs);
|
|
if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE) !=
|
|
(cs->hw.njet.last_is0 & NETJET_IRQM0_WRITE))
|
|
/* we have a write dma int */
|
|
write_tiger(cs);
|
|
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
|
|
}
|
|
spin_unlock_irqrestore(&cs->lock, flags);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int en_pci_probe(struct pci_dev *dev_netjet, struct IsdnCardState *cs)
|
|
{
|
|
if (pci_enable_device(dev_netjet))
|
|
return (0);
|
|
cs->irq = dev_netjet->irq;
|
|
if (!cs->irq) {
|
|
printk(KERN_WARNING "enter:now PCI: No IRQ for PCI card found\n");
|
|
return (0);
|
|
}
|
|
cs->hw.njet.base = pci_resource_start(dev_netjet, 0);
|
|
if (!cs->hw.njet.base) {
|
|
printk(KERN_WARNING "enter:now PCI: No IO-Adr for PCI card found\n");
|
|
return (0);
|
|
}
|
|
/* checks Sub-Vendor ID because system crashes with Traverse-Card */
|
|
if ((dev_netjet->subsystem_vendor != 0x55) ||
|
|
(dev_netjet->subsystem_device != 0x02)) {
|
|
printk(KERN_WARNING "enter:now: You tried to load this driver with an incompatible TigerJet-card\n");
|
|
printk(KERN_WARNING "Use type=20 for Traverse NetJet PCI Card.\n");
|
|
return (0);
|
|
}
|
|
|
|
return (1);
|
|
}
|
|
|
|
static void en_cs_init(struct IsdnCard *card, struct IsdnCardState *cs)
|
|
{
|
|
cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA;
|
|
cs->hw.njet.isac = cs->hw.njet.base + 0xC0; // Fenster zum AMD
|
|
|
|
/* Reset an */
|
|
cs->hw.njet.ctrl_reg = 0x07; // geändert von 0xff
|
|
outb(cs->hw.njet.ctrl_reg, cs->hw.njet.base + NETJET_CTRL);
|
|
/* 20 ms Pause */
|
|
mdelay(20);
|
|
|
|
cs->hw.njet.ctrl_reg = 0x30; /* Reset Off and status read clear */
|
|
outb(cs->hw.njet.ctrl_reg, cs->hw.njet.base + NETJET_CTRL);
|
|
mdelay(10);
|
|
|
|
cs->hw.njet.auxd = 0x00; // war 0xc0
|
|
cs->hw.njet.dmactrl = 0;
|
|
|
|
outb(~TJ_AMD_IRQ, cs->hw.njet.base + NETJET_AUXCTRL);
|
|
outb(TJ_AMD_IRQ, cs->hw.njet.base + NETJET_IRQMASK1);
|
|
outb(cs->hw.njet.auxd, cs->hw.njet.auxa);
|
|
}
|
|
|
|
static int en_cs_init_rest(struct IsdnCard *card, struct IsdnCardState *cs)
|
|
{
|
|
const int bytecnt = 256;
|
|
|
|
printk(KERN_INFO
|
|
"enter:now PCI: PCI card configured at 0x%lx IRQ %d\n",
|
|
cs->hw.njet.base, cs->irq);
|
|
if (!request_region(cs->hw.njet.base, bytecnt, "Fn_ISDN")) {
|
|
printk(KERN_WARNING
|
|
"HiSax: enter:now config port %lx-%lx already in use\n",
|
|
cs->hw.njet.base,
|
|
cs->hw.njet.base + bytecnt);
|
|
return (0);
|
|
}
|
|
|
|
setup_Amd7930(cs);
|
|
cs->hw.njet.last_is0 = 0;
|
|
/* macro rByteAMD */
|
|
cs->readisac = &ReadByteAmd7930;
|
|
/* macro wByteAMD */
|
|
cs->writeisac = &WriteByteAmd7930;
|
|
cs->dc.amd7930.setIrqMask = &enpci_setIrqMask;
|
|
|
|
cs->BC_Read_Reg = &dummyrr;
|
|
cs->BC_Write_Reg = &dummywr;
|
|
cs->BC_Send_Data = &netjet_fill_dma;
|
|
cs->cardmsg = &enpci_card_msg;
|
|
cs->irq_func = &enpci_interrupt;
|
|
cs->irq_flags |= IRQF_SHARED;
|
|
|
|
return (1);
|
|
}
|
|
|
|
static struct pci_dev *dev_netjet = NULL;
|
|
|
|
/* called by config.c */
|
|
int setup_enternow_pci(struct IsdnCard *card)
|
|
{
|
|
int ret;
|
|
struct IsdnCardState *cs = card->cs;
|
|
char tmp[64];
|
|
|
|
#ifdef __BIG_ENDIAN
|
|
#error "not running on big endian machines now"
|
|
#endif
|
|
|
|
strcpy(tmp, enternow_pci_rev);
|
|
printk(KERN_INFO "HiSax: Formula-n Europe AG enter:now ISDN PCI driver Rev. %s\n", HiSax_getrev(tmp));
|
|
if (cs->typ != ISDN_CTYPE_ENTERNOW)
|
|
return (0);
|
|
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
|
|
|
|
for (;;)
|
|
{
|
|
if ((dev_netjet = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET,
|
|
PCI_DEVICE_ID_TIGERJET_300, dev_netjet))) {
|
|
ret = en_pci_probe(dev_netjet, cs);
|
|
if (!ret)
|
|
return (0);
|
|
} else {
|
|
printk(KERN_WARNING "enter:now PCI: No PCI card found\n");
|
|
return (0);
|
|
}
|
|
|
|
en_cs_init(card, cs);
|
|
break;
|
|
}
|
|
|
|
return en_cs_init_rest(card, cs);
|
|
}
|