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linux_dsm_epyc7002/drivers/isdn/hisax/asuscom.c
Arvind Yadav 84dcc16c52 isdn: hisax: Fix pnp_irq's error checking for setup_asuscom 
The pnp_irq() function returns -1 if an error occurs.
pnp_irq() error checking for zero is not correct.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-16 22:31:15 +09:00

424 lines
11 KiB
C
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/* $Id: asuscom.c,v 1.14.2.4 2004/01/13 23:48:39 keil Exp $
*
* low level stuff for ASUSCOM NETWORK INC. ISDNLink cards
*
* Author Karsten Keil
* Copyright by Karsten Keil <keil@isdn4linux.de>
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
* Thanks to ASUSCOM NETWORK INC. Taiwan and Dynalink NL for information
*
*/
#include <linux/init.h>
#include <linux/isapnp.h>
#include "hisax.h"
#include "isac.h"
#include "ipac.h"
#include "hscx.h"
#include "isdnl1.h"
static const char *Asuscom_revision = "$Revision: 1.14.2.4 $";
#define byteout(addr, val) outb(val, addr)
#define bytein(addr) inb(addr)
#define ASUS_ISAC 0
#define ASUS_HSCX 1
#define ASUS_ADR 2
#define ASUS_CTRL_U7 3
#define ASUS_CTRL_POTS 5
#define ASUS_IPAC_ALE 0
#define ASUS_IPAC_DATA 1
#define ASUS_ISACHSCX 1
#define ASUS_IPAC 2
/* CARD_ADR (Write) */
#define ASUS_RESET 0x80 /* Bit 7 Reset-Leitung */
static inline u_char
readreg(unsigned int ale, unsigned int adr, u_char off)
{
register u_char ret;
byteout(ale, off);
ret = bytein(adr);
return (ret);
}
static inline void
readfifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
{
byteout(ale, off);
insb(adr, data, size);
}
static inline void
writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
{
byteout(ale, off);
byteout(adr, data);
}
static inline void
writefifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
{
byteout(ale, off);
outsb(adr, data, size);
}
/* Interface functions */
static u_char
ReadISAC(struct IsdnCardState *cs, u_char offset)
{
return (readreg(cs->hw.asus.adr, cs->hw.asus.isac, offset));
}
static void
WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
{
writereg(cs->hw.asus.adr, cs->hw.asus.isac, offset, value);
}
static void
ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
readfifo(cs->hw.asus.adr, cs->hw.asus.isac, 0, data, size);
}
static void
WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
writefifo(cs->hw.asus.adr, cs->hw.asus.isac, 0, data, size);
}
static u_char
ReadISAC_IPAC(struct IsdnCardState *cs, u_char offset)
{
return (readreg(cs->hw.asus.adr, cs->hw.asus.isac, offset | 0x80));
}
static void
WriteISAC_IPAC(struct IsdnCardState *cs, u_char offset, u_char value)
{
writereg(cs->hw.asus.adr, cs->hw.asus.isac, offset | 0x80, value);
}
static void
ReadISACfifo_IPAC(struct IsdnCardState *cs, u_char *data, int size)
{
readfifo(cs->hw.asus.adr, cs->hw.asus.isac, 0x80, data, size);
}
static void
WriteISACfifo_IPAC(struct IsdnCardState *cs, u_char *data, int size)
{
writefifo(cs->hw.asus.adr, cs->hw.asus.isac, 0x80, data, size);
}
static u_char
ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
{
return (readreg(cs->hw.asus.adr,
cs->hw.asus.hscx, offset + (hscx ? 0x40 : 0)));
}
static void
WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
{
writereg(cs->hw.asus.adr,
cs->hw.asus.hscx, offset + (hscx ? 0x40 : 0), value);
}
/*
* fast interrupt HSCX stuff goes here
*/
#define READHSCX(cs, nr, reg) readreg(cs->hw.asus.adr, \
cs->hw.asus.hscx, reg + (nr ? 0x40 : 0))
#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.asus.adr, \
cs->hw.asus.hscx, reg + (nr ? 0x40 : 0), data)
#define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.asus.adr, \
cs->hw.asus.hscx, (nr ? 0x40 : 0), ptr, cnt)
#define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.asus.adr, \
cs->hw.asus.hscx, (nr ? 0x40 : 0), ptr, cnt)
#include "hscx_irq.c"
static irqreturn_t
asuscom_interrupt(int intno, void *dev_id)
{
struct IsdnCardState *cs = dev_id;
u_char val;
u_long flags;
spin_lock_irqsave(&cs->lock, flags);
val = readreg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_ISTA + 0x40);
Start_HSCX:
if (val)
hscx_int_main(cs, val);
val = readreg(cs->hw.asus.adr, cs->hw.asus.isac, ISAC_ISTA);
Start_ISAC:
if (val)
isac_interrupt(cs, val);
val = readreg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_ISTA + 0x40);
if (val) {
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "HSCX IntStat after IntRoutine");
goto Start_HSCX;
}
val = readreg(cs->hw.asus.adr, cs->hw.asus.isac, ISAC_ISTA);
if (val) {
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "ISAC IntStat after IntRoutine");
goto Start_ISAC;
}
writereg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_MASK, 0xFF);
writereg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_MASK + 0x40, 0xFF);
writereg(cs->hw.asus.adr, cs->hw.asus.isac, ISAC_MASK, 0xFF);
writereg(cs->hw.asus.adr, cs->hw.asus.isac, ISAC_MASK, 0x0);
writereg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_MASK, 0x0);
writereg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_MASK + 0x40, 0x0);
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_HANDLED;
}
static irqreturn_t
asuscom_interrupt_ipac(int intno, void *dev_id)
{
struct IsdnCardState *cs = dev_id;
u_char ista, val, icnt = 5;
u_long flags;
spin_lock_irqsave(&cs->lock, flags);
ista = readreg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_ISTA);
Start_IPAC:
if (cs->debug & L1_DEB_IPAC)
debugl1(cs, "IPAC ISTA %02X", ista);
if (ista & 0x0f) {
val = readreg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_ISTA + 0x40);
if (ista & 0x01)
val |= 0x01;
if (ista & 0x04)
val |= 0x02;
if (ista & 0x08)
val |= 0x04;
if (val)
hscx_int_main(cs, val);
}
if (ista & 0x20) {
val = 0xfe & readreg(cs->hw.asus.adr, cs->hw.asus.isac, ISAC_ISTA | 0x80);
if (val) {
isac_interrupt(cs, val);
}
}
if (ista & 0x10) {
val = 0x01;
isac_interrupt(cs, val);
}
ista = readreg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_ISTA);
if ((ista & 0x3f) && icnt) {
icnt--;
goto Start_IPAC;
}
if (!icnt)
printk(KERN_WARNING "ASUS IRQ LOOP\n");
writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_MASK, 0xFF);
writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_MASK, 0xC0);
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_HANDLED;
}
static void
release_io_asuscom(struct IsdnCardState *cs)
{
int bytecnt = 8;
if (cs->hw.asus.cfg_reg)
release_region(cs->hw.asus.cfg_reg, bytecnt);
}
static void
reset_asuscom(struct IsdnCardState *cs)
{
if (cs->subtyp == ASUS_IPAC)
writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_POTA2, 0x20);
else
byteout(cs->hw.asus.adr, ASUS_RESET); /* Reset On */
mdelay(10);
if (cs->subtyp == ASUS_IPAC)
writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_POTA2, 0x0);
else
byteout(cs->hw.asus.adr, 0); /* Reset Off */
mdelay(10);
if (cs->subtyp == ASUS_IPAC) {
writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_CONF, 0x0);
writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_ACFG, 0xff);
writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_AOE, 0x0);
writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_MASK, 0xc0);
writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_PCFG, 0x12);
}
}
static int
Asus_card_msg(struct IsdnCardState *cs, int mt, void *arg)
{
u_long flags;
switch (mt) {
case CARD_RESET:
spin_lock_irqsave(&cs->lock, flags);
reset_asuscom(cs);
spin_unlock_irqrestore(&cs->lock, flags);
return (0);
case CARD_RELEASE:
release_io_asuscom(cs);
return (0);
case CARD_INIT:
spin_lock_irqsave(&cs->lock, flags);
cs->debug |= L1_DEB_IPAC;
inithscxisac(cs, 3);
spin_unlock_irqrestore(&cs->lock, flags);
return (0);
case CARD_TEST:
return (0);
}
return (0);
}
#ifdef __ISAPNP__
static struct isapnp_device_id asus_ids[] = {
{ ISAPNP_VENDOR('A', 'S', 'U'), ISAPNP_FUNCTION(0x1688),
ISAPNP_VENDOR('A', 'S', 'U'), ISAPNP_FUNCTION(0x1688),
(unsigned long) "Asus1688 PnP" },
{ ISAPNP_VENDOR('A', 'S', 'U'), ISAPNP_FUNCTION(0x1690),
ISAPNP_VENDOR('A', 'S', 'U'), ISAPNP_FUNCTION(0x1690),
(unsigned long) "Asus1690 PnP" },
{ ISAPNP_VENDOR('S', 'I', 'E'), ISAPNP_FUNCTION(0x0020),
ISAPNP_VENDOR('S', 'I', 'E'), ISAPNP_FUNCTION(0x0020),
(unsigned long) "Isurf2 PnP" },
{ ISAPNP_VENDOR('E', 'L', 'F'), ISAPNP_FUNCTION(0x0000),
ISAPNP_VENDOR('E', 'L', 'F'), ISAPNP_FUNCTION(0x0000),
(unsigned long) "Iscas TE320" },
{ 0, }
};
static struct isapnp_device_id *ipid = &asus_ids[0];
static struct pnp_card *pnp_c = NULL;
#endif
int setup_asuscom(struct IsdnCard *card)
{
int bytecnt;
struct IsdnCardState *cs = card->cs;
u_char val;
char tmp[64];
strcpy(tmp, Asuscom_revision);
printk(KERN_INFO "HiSax: Asuscom ISDNLink driver Rev. %s\n", HiSax_getrev(tmp));
if (cs->typ != ISDN_CTYPE_ASUSCOM)
return (0);
#ifdef __ISAPNP__
if (!card->para[1] && isapnp_present()) {
struct pnp_dev *pnp_d;
while (ipid->card_vendor) {
if ((pnp_c = pnp_find_card(ipid->card_vendor,
ipid->card_device, pnp_c))) {
pnp_d = NULL;
if ((pnp_d = pnp_find_dev(pnp_c,
ipid->vendor, ipid->function, pnp_d))) {
int err;
printk(KERN_INFO "HiSax: %s detected\n",
(char *)ipid->driver_data);
pnp_disable_dev(pnp_d);
err = pnp_activate_dev(pnp_d);
if (err < 0) {
printk(KERN_WARNING "%s: pnp_activate_dev ret(%d)\n",
__func__, err);
return (0);
}
card->para[1] = pnp_port_start(pnp_d, 0);
card->para[0] = pnp_irq(pnp_d, 0);
if (card->para[0] == -1 || !card->para[1]) {
printk(KERN_ERR "AsusPnP:some resources are missing %ld/%lx\n",
card->para[0], card->para[1]);
pnp_disable_dev(pnp_d);
return (0);
}
break;
} else {
printk(KERN_ERR "AsusPnP: PnP error card found, no device\n");
}
}
ipid++;
pnp_c = NULL;
}
if (!ipid->card_vendor) {
printk(KERN_INFO "AsusPnP: no ISAPnP card found\n");
return (0);
}
}
#endif
bytecnt = 8;
cs->hw.asus.cfg_reg = card->para[1];
cs->irq = card->para[0];
if (!request_region(cs->hw.asus.cfg_reg, bytecnt, "asuscom isdn")) {
printk(KERN_WARNING
"HiSax: ISDNLink config port %x-%x already in use\n",
cs->hw.asus.cfg_reg,
cs->hw.asus.cfg_reg + bytecnt);
return (0);
}
printk(KERN_INFO "ISDNLink: defined at 0x%x IRQ %d\n",
cs->hw.asus.cfg_reg, cs->irq);
setup_isac(cs);
cs->BC_Read_Reg = &ReadHSCX;
cs->BC_Write_Reg = &WriteHSCX;
cs->BC_Send_Data = &hscx_fill_fifo;
cs->cardmsg = &Asus_card_msg;
val = readreg(cs->hw.asus.cfg_reg + ASUS_IPAC_ALE,
cs->hw.asus.cfg_reg + ASUS_IPAC_DATA, IPAC_ID);
if ((val == 1) || (val == 2)) {
cs->subtyp = ASUS_IPAC;
cs->hw.asus.adr = cs->hw.asus.cfg_reg + ASUS_IPAC_ALE;
cs->hw.asus.isac = cs->hw.asus.cfg_reg + ASUS_IPAC_DATA;
cs->hw.asus.hscx = cs->hw.asus.cfg_reg + ASUS_IPAC_DATA;
test_and_set_bit(HW_IPAC, &cs->HW_Flags);
cs->readisac = &ReadISAC_IPAC;
cs->writeisac = &WriteISAC_IPAC;
cs->readisacfifo = &ReadISACfifo_IPAC;
cs->writeisacfifo = &WriteISACfifo_IPAC;
cs->irq_func = &asuscom_interrupt_ipac;
printk(KERN_INFO "Asus: IPAC version %x\n", val);
} else {
cs->subtyp = ASUS_ISACHSCX;
cs->hw.asus.adr = cs->hw.asus.cfg_reg + ASUS_ADR;
cs->hw.asus.isac = cs->hw.asus.cfg_reg + ASUS_ISAC;
cs->hw.asus.hscx = cs->hw.asus.cfg_reg + ASUS_HSCX;
cs->hw.asus.u7 = cs->hw.asus.cfg_reg + ASUS_CTRL_U7;
cs->hw.asus.pots = cs->hw.asus.cfg_reg + ASUS_CTRL_POTS;
cs->readisac = &ReadISAC;
cs->writeisac = &WriteISAC;
cs->readisacfifo = &ReadISACfifo;
cs->writeisacfifo = &WriteISACfifo;
cs->irq_func = &asuscom_interrupt;
ISACVersion(cs, "ISDNLink:");
if (HscxVersion(cs, "ISDNLink:")) {
printk(KERN_WARNING
"ISDNLink: wrong HSCX versions check IO address\n");
release_io_asuscom(cs);
return (0);
}
}
return (1);
}
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