diff options
Diffstat (limited to 'drivers/isdn/hisax/sportster.c')
| -rw-r--r-- | drivers/isdn/hisax/sportster.c | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/drivers/isdn/hisax/sportster.c b/drivers/isdn/hisax/sportster.c new file mode 100644 index 00000000..1267298e --- /dev/null +++ b/drivers/isdn/hisax/sportster.c @@ -0,0 +1,269 @@ +/* $Id: sportster.c,v 1.16.2.4 2004/01/13 23:48:39 keil Exp $ + * + * low level stuff for USR Sportster internal TA + * + * 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 Christian "naddy" Weisgerber (3Com, US Robotics) for documentation + * + * + */ +#include <linux/init.h> +#include "hisax.h" +#include "isac.h" +#include "hscx.h" +#include "isdnl1.h" + +static const char *sportster_revision = "$Revision: 1.16.2.4 $"; + +#define byteout(addr, val) outb(val, addr) +#define bytein(addr) inb(addr) + +#define SPORTSTER_ISAC 0xC000 +#define SPORTSTER_HSCXA 0x0000 +#define SPORTSTER_HSCXB 0x4000 +#define SPORTSTER_RES_IRQ 0x8000 +#define SPORTSTER_RESET 0x80 +#define SPORTSTER_INTE 0x40 + +static inline int +calc_off(unsigned int base, unsigned int off) +{ + return (base + ((off & 0xfc) << 8) + ((off & 3) << 1)); +} + +static inline void +read_fifo(unsigned int adr, u_char *data, int size) +{ + insb(adr, data, size); +} + +static void +write_fifo(unsigned int adr, u_char *data, int size) +{ + outsb(adr, data, size); +} + +/* Interface functions */ + +static u_char +ReadISAC(struct IsdnCardState *cs, u_char offset) +{ + return (bytein(calc_off(cs->hw.spt.isac, offset))); +} + +static void +WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value) +{ + byteout(calc_off(cs->hw.spt.isac, offset), value); +} + +static void +ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size) +{ + read_fifo(cs->hw.spt.isac, data, size); +} + +static void +WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size) +{ + write_fifo(cs->hw.spt.isac, data, size); +} + +static u_char +ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset) +{ + return (bytein(calc_off(cs->hw.spt.hscx[hscx], offset))); +} + +static void +WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value) +{ + byteout(calc_off(cs->hw.spt.hscx[hscx], offset), value); +} + +/* + * fast interrupt HSCX stuff goes here + */ + +#define READHSCX(cs, nr, reg) bytein(calc_off(cs->hw.spt.hscx[nr], reg)) +#define WRITEHSCX(cs, nr, reg, data) byteout(calc_off(cs->hw.spt.hscx[nr], reg), data) +#define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.spt.hscx[nr], ptr, cnt) +#define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.spt.hscx[nr], ptr, cnt) + +#include "hscx_irq.c" + +static irqreturn_t +sportster_interrupt(int intno, void *dev_id) +{ + struct IsdnCardState *cs = dev_id; + u_char val; + u_long flags; + + spin_lock_irqsave(&cs->lock, flags); + val = READHSCX(cs, 1, HSCX_ISTA); +Start_HSCX: + if (val) + hscx_int_main(cs, val); + val = ReadISAC(cs, ISAC_ISTA); +Start_ISAC: + if (val) + isac_interrupt(cs, val); + val = READHSCX(cs, 1, HSCX_ISTA); + if (val) { + if (cs->debug & L1_DEB_HSCX) + debugl1(cs, "HSCX IntStat after IntRoutine"); + goto Start_HSCX; + } + val = ReadISAC(cs, ISAC_ISTA); + if (val) { + if (cs->debug & L1_DEB_ISAC) + debugl1(cs, "ISAC IntStat after IntRoutine"); + goto Start_ISAC; + } + /* get a new irq impulse if there any pending */ + bytein(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ + 1); + spin_unlock_irqrestore(&cs->lock, flags); + return IRQ_HANDLED; +} + +static void +release_io_sportster(struct IsdnCardState *cs) +{ + int i, adr; + + byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, 0); + for (i = 0; i < 64; i++) { + adr = cs->hw.spt.cfg_reg + i * 1024; + release_region(adr, 8); + } +} + +static void +reset_sportster(struct IsdnCardState *cs) +{ + cs->hw.spt.res_irq |= SPORTSTER_RESET; /* Reset On */ + byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq); + mdelay(10); + cs->hw.spt.res_irq &= ~SPORTSTER_RESET; /* Reset Off */ + byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq); + mdelay(10); +} + +static int +Sportster_card_msg(struct IsdnCardState *cs, int mt, void *arg) +{ + u_long flags; + + switch (mt) { + case CARD_RESET: + spin_lock_irqsave(&cs->lock, flags); + reset_sportster(cs); + spin_unlock_irqrestore(&cs->lock, flags); + return (0); + case CARD_RELEASE: + release_io_sportster(cs); + return (0); + case CARD_INIT: + spin_lock_irqsave(&cs->lock, flags); + reset_sportster(cs); + inithscxisac(cs, 1); + cs->hw.spt.res_irq |= SPORTSTER_INTE; /* IRQ On */ + byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq); + inithscxisac(cs, 2); + spin_unlock_irqrestore(&cs->lock, flags); + return (0); + case CARD_TEST: + return (0); + } + return (0); +} + +static int __devinit +get_io_range(struct IsdnCardState *cs) +{ + int i, j, adr; + + for (i = 0; i < 64; i++) { + adr = cs->hw.spt.cfg_reg + i * 1024; + if (!request_region(adr, 8, "sportster")) { + printk(KERN_WARNING "HiSax: USR Sportster config port " + "%x-%x already in use\n", + adr, adr + 8); + break; + } + } + if (i == 64) + return (1); + else { + for (j = 0; j < i; j++) { + adr = cs->hw.spt.cfg_reg + j * 1024; + release_region(adr, 8); + } + return (0); + } +} + +int __devinit +setup_sportster(struct IsdnCard *card) +{ + struct IsdnCardState *cs = card->cs; + char tmp[64]; + + strcpy(tmp, sportster_revision); + printk(KERN_INFO "HiSax: USR Sportster driver Rev. %s\n", HiSax_getrev(tmp)); + if (cs->typ != ISDN_CTYPE_SPORTSTER) + return (0); + + cs->hw.spt.cfg_reg = card->para[1]; + cs->irq = card->para[0]; + if (!get_io_range(cs)) + return (0); + cs->hw.spt.isac = cs->hw.spt.cfg_reg + SPORTSTER_ISAC; + cs->hw.spt.hscx[0] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXA; + cs->hw.spt.hscx[1] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXB; + + switch (cs->irq) { + case 5: cs->hw.spt.res_irq = 1; + break; + case 7: cs->hw.spt.res_irq = 2; + break; + case 10:cs->hw.spt.res_irq = 3; + break; + case 11:cs->hw.spt.res_irq = 4; + break; + case 12:cs->hw.spt.res_irq = 5; + break; + case 14:cs->hw.spt.res_irq = 6; + break; + case 15:cs->hw.spt.res_irq = 7; + break; + default:release_io_sportster(cs); + printk(KERN_WARNING "Sportster: wrong IRQ\n"); + return (0); + } + printk(KERN_INFO "HiSax: USR Sportster config irq:%d cfg:0x%X\n", + cs->irq, cs->hw.spt.cfg_reg); + setup_isac(cs); + cs->readisac = &ReadISAC; + cs->writeisac = &WriteISAC; + cs->readisacfifo = &ReadISACfifo; + cs->writeisacfifo = &WriteISACfifo; + cs->BC_Read_Reg = &ReadHSCX; + cs->BC_Write_Reg = &WriteHSCX; + cs->BC_Send_Data = &hscx_fill_fifo; + cs->cardmsg = &Sportster_card_msg; + cs->irq_func = &sportster_interrupt; + ISACVersion(cs, "Sportster:"); + if (HscxVersion(cs, "Sportster:")) { + printk(KERN_WARNING + "Sportster: wrong HSCX versions check IO address\n"); + release_io_sportster(cs); + return (0); + } + return (1); +} |